17th Century Treatment of Woman in Literature Essay

By the Middle Ages, it was commonly accepted that Eve was principally to blame for the disobedience that led to the fall of humanity. Greek ideas had replaced Jewish in Christian thinking, including the notion that the soul was good but the body evil. Heretical though this might have been, it didn’t stop sexuality being regarded as somehow evil. One of the few recorded medieval women writers, the mystic Margery Kempe, aspired to celibacy even within marriage. As it becomes apparent in a few select works representing women in medieval literature, includingThe Book of Margery Kempe, Beowulf, Sir Gawain and the Green Knight, and Le Morte Darthur, in the middle ages or medieval period, restrictions placed on women underwent a significant change. At the beginning of this period, women’s roles were very narrowly prescribed and women did not have much to do with life outside of the home. As this age went on, however, women gradually began to express more opinions and have a greater and more equal role in society. Two earlier medieval texts, Beowulf and Sir Gawain and the Green Knight offer readers two simple categories of women, those who are or are not confined. Later, with the writings of Margery Kempe, the strict duality begins to disappear and the reader is confronted with a woman who is blend of each of these ideas of women. While she is confined by her society, she is unconfined by its conventions such as marriage and traditional gender roles. In general, however, each text presents an example of a â€Å"proper† and confined woman as well as the complete opposite; almost so that the reader can see what evils can occur if a woman is not confined. The women in Beowulf, at least on first glance, might appear to be glorified waitresses and sexual objects, but their role is far more complicated than this. When it is stated in one of the important quotes from â€Å"Beowulf† that, â€Å"A queen should weave peace† As confined in a marriage, women in Beowulf are assigned the role of peace weaver, â€Å"queen and bedmateAll of the human women in Beowulf are queens and adhere to their duties as such with grace and obedience. The only exception to this model of medieval femininity is Grendel’s mother who is technically a woman but is so hideously described that the idea of gender becomes grossly distorted. Sir Gawain and the Green Knight even though it was written some years after Beowulf. In this text, the reader is first confronted with the ideal woman, Guenevere, who is confined and is serving her role as peace weaver and object for the male gaze. â€Å"the goodly queen gay in the midst/ on a dais well-decked and duly arrayed / with costly silk curtains†¦all broidered and bordered with the best gems† Chaucer’s womenAlthough women feature strongly in Chaucer’s earlier works, such as The Boke of the Duchess and Troilus and Criseyde, we only find three women on the pilgrimage described in The Canterbury Tales: * The Wife of Bath * The Prioress * ‘Another nun’ who accompanies her but is hardly mentioned again. The two principal women reflect the only ways that women at the time could achieve independence and status: in the Church or in a trade. The Wife of Bath represents those whose skills, such as weaving, gave them financial independence, though Chaucer’s character seems to have grown wealthy mainly by marrying a series of rich old men. is tempting to see the Wife as a champion of female rights, and her Tale brings out the idea that women should have maistrieover men, but the Wife is of course a character in a story written by a man. She has had five husbands, like the woman of Samariawho is challenged by Jesus (in John 4:17-18), ’withouten oother compaignye in youthe’. Her fifth husband, whom she married for love rather than riches, proved to be less compliant – and very well read. She claims to have put him in his place eventually, but Chaucer enjoys making the Wife recount (and try to refute) all the misogynistic tales with which he has assaulted her.  Women in Renaissance and after: Throughout the sixteenth and seventeenth centuries, the social standing and the legal and economic rights of women continued to be restrictive, limiting them to the domestic sphereDuring the Protestant Reformation of the sixteenth century and the resulting Catholic Counter-Reformation, the depiction of women in domestic roles became increasingly important. The social system of patriarchy matured during the early modern period, particularly during the Reformation. The concept of patriarchy involved male control over nearly all facets of society. The assigned works from the English Renaissance primarily portray women unrealistically. Despite a few exceptions, these works depict women as being idealistically beautiful, as having perfect virtue, or, conversely, as exercising hyperbolically negative traits. The few exceptions to this rule do depict women in a more realistic light. For instance, in its first six stanzas, the female speaker of John Donne’s â€Å"The Bait† praises Marlowe’s â€Å"Passionate Shepherd,† but in the final quatrain, she acknowledges how foolish she is for biting at his bait, saying, â€Å"That fish that is not catched thereby, / Alas, is wiser far than I† (1247). William Shakespeare also paints a realistic picture of a woman in Sonnet 130, debunking the florid Petrarchan conventions that elevate women’s beauty almost beyond comprehension but asserting that his mistress is â€Å"as rare† (1041) as any Petrarchan subject nonetheless. Among the male authors, Shakespeare also presents the most substantive and realistic female character of these works with Cordelia in King Lear. Although her honesty at first brings disownment and exile, she emerges as one of the few characters in the play who remain true to their convictions throughout the course of the narrative. Cordelia’s realistic portrayal is rivaled only by the highly personal poetry of the only female author assigned, Katherine Philips. In â€Å"A Married State,† Philips also debunks the popular perspective favoring of marriage, especially with its benefits for women, noting to her audience of young women that the single life yields â€Å"No blustering husbands to create your fears; / No pangs of childbirth to extort your tears; / No children’s cries for to offend your ears† (1679). Another of her poems, â€Å"On the Death of My First and Dearest Child, Hector Philips,† provides an equally realistic yet exponentially more emotional account of the uniquely maternal experience of losing a child. Despite the success of these works in presenting realistic depictions of women, they are the exceptions to the rule, as the majority of the assigned works portray women quite unrealistically. Perhaps the most common of the exaggerated portrayals addresses women’s physical beauty. Sonnet 64 of Edmund Spenser’s Amorettidescribes his subject with the inflated Petrarchan conventions satirized by Shakespeare, likening each detail of her physical appearance to a different flower, and claiming that â€Å"her sweet odour did them all excel† (866)—an obviously impossible feat. The bride of Spenser’s Epithalamion is sung as having similarly cosmic beauty, with â€Å"eyes like stars† (870) or â€Å"Saphyres shining bright† (872). In fact, Spenser describes â€Å"all her body† as â€Å"like a pallace fayre† (872) in a highly exaggerated comparison, the meaning of which almost defies interpretation. Even in a poem addressing the neo-Platonic ideal of finding virtue in beauty, Sir Philip Sidney’s Astrophil still relapses to using the common Petrarchan convention comparing Stella’s eyes to the sun in Sonnet 71 before concluding with the confession that he fails in his attempt to elevate his attention from her physical beauty to her underlying virtue. These last two works also invoke the fallacy of women as having unadulterated virtue. Again, Astrophil lauds the inherent goodness that Stella’s beauty reflects. Not only does she possess this virtue, but she also seeks to improve all with whom she comes in contact: â€Å"And not content to be Perfection’s heir / Thyself, dost strive all minds that way to move, / Who mark in thee what is in thee most fair† (926). Spenser describes one example of the flawless disposition of the bride ofEpithalamion by recounting her humility, even shyness, in the face of the adoring stares of all the guests at her wedding and the unsullied virginity she brings to her marriage bed. In another work, the virtuous Celia of Ben Jonson’s Volpone finds her faith and integrity unrewarded with an attempted affair forced upon her by her husband and a false conviction for allegedly seducing yet another man. Finally, in a highly complex simile, Donne draws a parallel between his love and â€Å"the fixed foot† (1249) of a compass in â€Å"A Valediction: Forbidding Mourning. † The woman he addresses is so constant, so faithful, so flawlessly virtuous, that she is as the tool that produces the circle, the shape of perfection. Just as common as excessively positive characterizations of women are the excessively negative. Two of the assigned plays include women whose primary activity is political scheming: Goneril and Regan in King Lear and Lady Politic Would-Be in Volpone. Goneril and Regan present flattering platitudes to their father, Lear, that do not reflect their true feelings for him. In fact, after receiving their inheritances of half the kingdom each, they want nothing more to do with him and turn him out into the stormy night. Lady Politic also schemes in an effort to increase her social status, leveling false accusations of adulterous seduction against Celia in order to advance her and her husband’s own chances of inheriting Volpone’s fortune. The speaker of Donne’s â€Å"Song† might have been hurt by such women as these, for he denies the existence of any faithful and virtuous woman. If his addressee were to find a seemingly true woman, Donne laments that â€Å"Though she were true when you met her, / . . . / Yet she / Will be / False, ere I come, to two, or three† (1238). Another of Donne’s poems, â€Å"The Flea,† contains another common criticism of women: that they too often deny their suitors. The listener of this dramatic monologue, in killing the flea, casually rejects the speaker’s elaborate analogical argument for a relationship between them, and in response, the speaker insults her honor, which amounts to as much â€Å"as this flea’s death took life from thee† (1236). â€Å"The Nymph’s Reply to the Shepherd† also counters an elaborate argument, this one an appeal more emotional than rational. Sir Walter Ralegh’s nymph responds to each point from Marlowe’s shepherd with the argument that all his promised goods and pleasures will fade with time, including his own youth and love. This reply to a heartfelt attempt to win her love establishes the nymph as cold and self-centered, as opposed to the devoted and emotionally expressive shepherd. The speaker of Andrew Marvell’s â€Å"To His Coy Mistress† experiences a similar rejection from his intended lover. Rather than praise her beauty and virtue, he mocks them as fleeting and meaningless, respectively, saying, â€Å"Thy beauty shall no more be found, / . . . in thy marble vault . . . † (1691) and â€Å". . . then worms shall try / That long-preserved virginity, / And your quaint honor turn to dust† (1691-92). Perhaps the strongest indictments of women in these works charge them with an opposite sin: the base corruption of formerly virtuous men. Arcasia, in Spenser’s The Faerie Queene, attracts and seduces good men only to turn them into wild beasts doomed to her service. Shakespeare’s Sonnet 144 describes a similar woman, close contact with whom carries damning effects: â€Å"To win me soon to hell, my female evil / Tempteth my better angel from my side, / And would corrupt my saint to be a devil† (1042). The most â€Å"accomplished† female corrupter of these works affects not only the man in her life but all of humankind. John Milton’s Eve, after ignoring the counsel of her wiser husband, inflicts sin upon all her descendents as a result of her inferior reason, virtue, and faith—according to Adam and Milton. The sinful history of humanity to follow owes itself to the weakness of a woman. The enormity of this last example typifies how the unrealistically exaggerated portrayals of women in English Renaissance literature far outweigh the few examples of more realistic and moderate depictions. This subject culminates in the image of Milton’s Eve in the epic poem Paradise Lost. Although Milton’s Eve comes, in the mid-seventeenth century, at the end of the Renaissance in England, her image builds upon, and perpetuates, Renaissance antifeminist commonplaces, while it also questions and undermines them. Milton emphasizes Eve’s subordinate position in his description of Adam and Eve in Book 4: â€Å"For contemplation he and valor formed, /For softness she and sweet attractive grace; /He for God only, she for God in him† (11. 296-299). Eve herself articulates and generalizes that subservience: â€Å"God is thy Law, thou mine; to know no more/Is woman’s happiest knowledge and her praise† (11. 638-639). When she rebels against her secondary position, she separates herself from Adam in their Edenic tasks and thus is vulnerable to Satan’s temptations. When the Renaissance in England was at its height, in Edmund Spenser’s Elizabethan world, the great epic poet of the 1590s presents images of women that contrast with the shadowy or negative women of Milton’s epic poem. While antifeminist views of female nature are embodied in the allegorical Error in Book 1 of Spenser’s The Faerie Queene, other females throughout the epic serve to celebrate women. In part because Spenser’s poem was written in praise of his own Queen Elizabeth, the positive images of women range widely. They include the gentle, yet forceful, Una, whose cry, â€Å"Fie, fie, faint harted knight† (1. x. 465) shocks the feeble Redcrosse Knight into action against the temptations of Despair. In the third book of The Faerie Queene, the virtue of Chastity is exemplified through the woman warrior Britomart. In this portrait, Spenser tells Queen Elizabeth that he is disguising praise of her, his own queen, since explicit celebration would be inadequate: â€Å"But O dred Soveraine/ Thus farre forth pardon, sith that choicest wit/ Cannot your glorious pourtraict figure plaine/ That I in colourd showes may shadow it,/ And antique praises unto present persons fit† (3. . 23-27). Throughout her reign, Queen Elizabeth provided a strong, positive image of a woman, through which poets from Peele’s play, The Arraignment of Paris, through William Shakespeare’s Henry VI, Part 3 found opportunities to create dominant roles for woman. Yet Queen Elizabeth herself perpetuated some of the misogynist stereotypes that haunted her at her accession in 1558, in such tracts as John Knox’s Blast of the Trumpet against the Monstrous Regiment of Women. Queen Elizabeth ruled through her own alienation from her womanliness. She ruled as the Virgin Queen, continuing the idea of chastity as the norm and replacing in her still newly Protestant country the lost ideal of the Virgin Mary. The artifice of her costuming and the artfulness of her speeches both contributed to her power. During Elizabeth’s reign from 1558 to 1603, positive images of women include the female characters of Shakespeare’s comedies, like Rosalind of As You Like It and Beatrice of Much Ado about Nothing. After James I’s accession, however, the Jacobean theater explored female characters who achieved tragic, heroic stature, like John Webster’s The Duchess of Malfi. In her closet drama, The Tragedy of Mariam, Elizabeth Cary explored the dilemmas facing strong women. In addition, in this later period of the Renaissance, such women writers as Elizabeth Grymeston, the author of the Miscelanea; Lady Mary Wroth, the author of the poetry and prose epic romance Urania; and Amelia Lanier, the author of a poetic defense of Eve, became creators of rich images of women, which we are only now beginning to recover.

Embedded Assessment Essay

This Embedded Assessment is very mentally challenging. The assignment keeps you thinking. After I heard our assignment for today, I just sat there wondering, which aspect of my life do I choose? Out of all my symbols which one is going to be the easiest to write about? I realized, it isn’t about getting it done quickly. It was about getting the most out of it. So without further ado I present to you†¦ two symbols of my home culture! I grew up very quickly and didn’t have much of a childhood. My culture is completely revolving around my family life. In a short period of time I changed a lot and matured more. My family and friends are extremely important to me. When I was younger my family broke apart for various reasons and since then I have not seen my father. It was hard trying to act like nothing had changed for us. I had to be a big sister and forget about my issues. Isabell is the largest aspect of my life and that can be an issue sometimes. Relationships between friends and boyfriends have been forgotten about because of our strong bond. That is why I chose a photo of my younger sister and I. It is a photo taken of Izzy and I, the day that she was born. Another artifact of my life I chose is one of my Cappie medals. The Cappies of Greater Cincinnati program is a way for teens in drama club can feel more rewarded in all aspects of the theater. Scott Drama is a program that is very welcome and inviting. Being in Drama is like having a second family that you can go to for all of your problems. We fight and bicker, but together we make some awesome shows. Last year we were nominated for several categories, which is a huge deal for a public school in Northern Kentucky. We are going up against schools like St. Xavier, Cincinnati Christian Schools, Cincinnati Hills Christian Academy,Colerain High School, Sycamore High School,Taylor High School,Turpin High School and even School of Creative and Performing Arts. It’s very prestigious to even get nominated and even more so if you do win. It’s very close to my heart (literally).

Awesome Ball Girl and Perception Essay Example for Free

Awesome Ball Girl and Perception Essay In the short video of â€Å"Awesome Ball Girl†, there is a young ball girl working in the field that makes such a great catch, most professionals would not have been able to make. At the start of the video you would think that you are about to see a home run after a great hit, but my eyes were drawn elsewhere; just like the crowd and two teams. This shows the first stage in the perception process: selection. Selection occurs when one or more of your senses are stimulated, where your mind and body help you choose what stimuli to attend to (Floyd 109). Of my five senses, this video affected my vision and my hearing since I was watching a screen; more senses would have been affected if I would have been in the crowd. We do not necessarily make conscious decisions about which stimuli to notice and which to ignore. Research indicates that there are three characteristics that make a particular stimulus more likely to be selected for attention. (Floyd 109) The first characteristic is that something unusual or unexpected will make a stimulus stand out. Second, that repetition or how frequently you have been exposed to something will make it stand out. Third, the intensity of a stimulus will affect how much you take notice to it. From the video â€Å"Awesome Ball Girl†, two of the characteristics that stood out the most for me were repetition and intensity. I do not watch baseball often so since I am not exposed to that sport often, it stood out to me. In addition to not watching that sport often, the intensity of the crowd made me more interested because I knew something big was happening due to hearing the cheering and gasping. By the end of the video, all of my attention was focused on the young ball girl who just made an amazing catch. Once you have noticed a particular stimulus the next step of the perception process is to classify it by organization, the second stage of the perception process. Organization is the process of categorizing information that has been selected for attention – the mind will apply a perceptual schema to it for a mental framework for organizing information (Floyd 109). Perceptual schemas help us organize sensory information in some meaningful way so that we can move forward with the process of perception. There are four types of schema that help to classify the information we notice about people: physical constructs, role constructs, interaction constructs and psychological constructs. (Floyd 110) Physical constructs emphasize appearances and objective characteristics (height, age, ethnicity, body shape) as well as subjective characteristics (attractiveness). Role constructs emphasize social or professional position (teacher, accountant, father, community leader). Interaction constructs emphasize behavior (outgoing, shy, aggressive, sarcastic, considerate). Psychological constructs emphasize thoughts and feelings (angry, insecure, jealous, worried). (Floyd 110) Looking back on watching this video, I feel like I could apply all of these constructs to the young ball girl. She was a younger white female; her appearance was average height for a woman, not tall and not short with an athletic build – which is known to be attractive. The announcer for the game calls her the ball girl as well as the title of the video which gave the role construct. The interaction I could see was that she was a â€Å"go-getter† and that she was not shy about going after the ball that the professional player missed. After the catch, she was walking back to her seat; she seemed insecure and or worried like she was thinking maybe it was a bad idea to catch the ball now that all attention is on her. Stage one, selection, helped me with stage two, organization because I knew what caught my attention. Seeing a girl running down the side of the field, hearing the crowd cheering and the announcer going crazy made me realize that something spectacular was happening even though I don’t watch baseball often. Once my attention was focused on the ball girl, I was able to use the types of schemas to classify the information that my mind noticed. The third and final stage of the perception process is interpretation. Interpretation in the perception process is assigning all of the information from selection and organization and forming a personal meaning. Three factors: experience, knowledge and closeness can all affect how you interpret something that you perceive (Floyd 111). Every person’s interpretations will most likely differ. For me, experience plays the biggest role since I used to play softball. I know how hard it can be to catch a ball at the rear of the outfield, let alone trying to scale a wall before catching the ball; which proves to me that this young ball girl has a lot of talent. To some people that may be avid baseball fans that attend a lot of games, this could be an event they will never forget, but for me, it is just a very impressive video that I will probably potentially forget about due to my lack of interest in baseball. I do not have doubts that this video is not real or accurate. Crazier things happen every day! After going step by step through the perception process, I see a very talented young girl that has the potential to be a great player on a ball team. Awesome Ball Girl and Perception. (2016, Sep 29).

Governments Position Towards Legalization of Marijuana Research Paper

Governments Position Towards Legalization of Marijuana - Research Paper Example These positive attributes include medical value and recreational use. Most of the Americans who use marijuana do so because they have made deliberate and conscious decisions to use it. Facts show that most of these American prefer using marijuana as a way of relaxing (Morgan 27). They say that it serves them better than when they use alcohol. There are many others who use it as a way of relieving pain and spasticity. These are individuals who have tried the conventional medicines, but the modern medicines have not served them. Most of the users of marijuana say that they have made an observation that it has a low dependence liability and that it has got minimal side effects which are easy to manage (Kenworthy 29); therefore, it makes sense to make that drug legal (Varney 4). Those who use marijuana for a significant amount of time develop a tolerance for its side effects. In case some of these people fail to develop this tolerance, they opt to stop using the drug. Most of the America ns who use marijuana have a truly informed consent before making a decision to use the drug. This is because they consider that using marijuana has more benefits compared to the risks of using the same drug. Marijuana can support many vital government programs if it is taxed (Kenworthy 29). This is because the drug is extremely expensive, at the moment, for the American justice system. When the law enforcing agents arrest about 800,000 Americans per year because of either using or possessing the drug, they forego there are beneficial programs in order to do this (Turnlund 19). All these individuals are then taken to court, and it takes a lot of time before all these cases can be disposed. This is what it means to say that the use of marijuana is too expensive to the American justice system (Morgan 27). All these people cause the American jail to be clogged, and jail space is wasted.

Easy Jet Airlines Essay Example | Topics and Well Written Essays - 1500 words

Easy Jet Airlines - Essay Example The CEO - Stelios is known for exceptional decision-making and problem-solving skills (including correct analysis, comparison of alternatives, and selecting best alternative), Value driven; possesses qualities of honesty and integrity, Takes initiative and plans accordingly (includes planning, organizational, and time and conflict management skills), Holds accountability for actions, Knowledge in given field, Observant and reacts to employee/customer needs, Effectively assumes responsibility and rewards/punishes accordingly, Promotes team-building and relationship building. Stelios, founder and CEO of easyJet Airlines, want to offer low cost airlines to its customer & to become leader in airline industries. He believed that in order to be successful, it was important to be first to market and to saturate the geographic market. The main issue with the easyJet is that due to monopoly of European Airline Industry, it is very difficult to become the global leader in Airline Industry. Due to monopoly of European airlines, easyJet airlines are not able to enter in to the European countries. For that Stelios had done a lot of efforts to attract passengers towards easyJet. He offered low cost tickets, easy ticketing procedure through internet or phone call, and also he purchase some front seat tickets of an European airlines and send his employee in a uniform that is advertising for Easy Jet. It means some passengers traveling in an European airlines are advertising for Easyjet Airlines. To succeed successfully in the airline industry, a company must be led by a visionary leader with good decision making skills. The leader must be in-line with the organizational culture, promoting a favorable internal environment. In order to become the global leader, Stelios, founder & CEO of jet Airlines tries his hand in other business in 1999. Among his pet projects was the creation of a cyber cafà © business called easyEverything cafà ©. easyEverything will provide internet at lower cost (Less than a phone

Philosophy Essay Example | Topics and Well Written Essays - 2000 words - 3

Philosophy - Essay Example hetical discussions that are meant towards moments of epiphany, or the awakening of their seeming ignorant selves into the glorious knowledge about the creator. Hume on the other hand projects his thoughts on the subject of God through the minds of the three characters, Cleanthes, Philo, and Demea in his work Dialogue Concerning Natural Religion. Rousseau looks at the problematic existence of man as a symptom that shows he cannot govern himself or protect his kind as well as he should. Implicitly he suggests that only divine order can protect man from self destruction. He traces the development of man from the age primordial barbarity until the modern times and sees through a continuum of strife that needs divine remedy. Rousseau would therefore suggest that the natural order as reflected at the early forms of society is enough proof for the existence of an intelligent designer of the universe. This is because this creative and almighty designer could only make the universe in form of his own image of perfection, peace, tranquility, and perhaps most of all, conflict free. Most probably the philosopher would have imagined the answer of the intelligent designer through his trade mark irony that seems to mock at the Hegelian dialectical progress of society. The progress of mankind as concerns society has moved through history from the epoch when he adjusted himself to his natural setting to a point in time when he wanted to benefit from the same environment. It might be deduced in line with this thinking that this movement preceded alongside the transformation of man’s society from good to evil. The disorders that accompanied man after the societies he created degenerated into skirmishes that resulted from primitive competition and accumulation of nature’s resources would therefore align with the departure of Godliness. The structures of the universe as created by the all-knowing and perfect designer no longer held. Instead in its place was man’s own

Green criminology Essay Example | Topics and Well Written Essays - 1750 words

Green criminology - Essay Example These new categories are crimes of air pollution, crimes of deforestation, crimes of species decline and against animal rights, and crimes of water pollution. Crimes of deforestation Our area of consideration will focus on deforestation a category of green crime and we subject it to green criminology test. Deforestation as a crime against environment can be defined as the removal of a forest or stand of trees where the land is thereafter converted to a non forest use for example conversion of forestland to agriculture or urban use. Deforestation is often misused to include any activity where all trees in an area are removed but in temperate climates, the removal of all trees in an area in conformance with sustainable forestry practices is correctly described as regeneration harvest (Butler, 2009). People engage in deforestation for many reasons but the removal of trees without sufficient reforestation has resulted in damage to habitat, biodiversity loss and aridity it also causes ext inction, changes to climatic conditions, desertification, and displacement of populations. Disregard or ignorance of the value, weak forest management and lack of environmental laws are some of the factors that contribute to deforestation. deforestation has a number of causes, including corruption of government institutions, the inequitable distribution of wealth and power, population growth and overpopulation, and urbanization. Globalization is viewed as another root cause of deforestation. In 2000 the United Nations Food and Agriculture Organization (FAO) found that deforestation can result from "a combination of population pressure and stagnating economic, social and technological conditions. According to the United Nations Framework Convention on Climate Change (UNFCCC) secretariat, the direct cause of deforestation is agriculture. The degradation of forest ecosystems has also been traced to economic incentives that make forest conversion appear more profitable than forest conse rvation. Many important forest functions have no markets, and hence, no economic value that is readily apparent to the forests' owners or the communities that rely on forests for their well-being. From the perspective of the developing world, the benefits of forest as carbon sinks or biodiversity reserves go primarily to richer developed nations and there is insufficient compensation for these services. Developing countries feel that some countries in the developed world, such as the United States of America, cut down their forests centuries ago and benefited greatly from this deforestation, and that it is hypocritical to deny developing countries the same opportunities that the poor shouldn't have to bear the cost of preservation when the rich created the problem. This is one of the major problems with green crimes where the developed nations are reluctant in implementing them (Patel-Weynand, 2002). Logging operations, which provide the world’s wood and paper products, also cut countless trees each year. Loggers, some of them acting illegally, also build roads to access more and more remote forests which lead to further deforestation. New crimes and criminals here would include those who deal in the destruction of rainforests and valuable lands; those who exploit natural resources for their own ends; and ‘black markets’ that develop around the sale of many of these valuable commodities. An example of a new kind of environmental crime may be

Modern manufacturing processes or equipment - Laser Cutting Research Paper

Modern manufacturing processes or equipment - Laser Cutting - Research Paper Example The molten material is removed from the cutting front through a pressurized gas jet (Dahotre and Harimkar, 2008). The pressurized assist gas also facilitates material removal through chemical reaction such as by oxidizing the material. The process of material cutting proceeds through the cutting front movement across the plane of the material. The motion of either the work piece and/or focused beam relative to each other executes the process. It is important to note that laser cutting is a repeatable, reliable, and high-speed technique that can be applied to materials of various thicknesses and types to generate very clean-cuts with narrow widths. The process is specifically suited as a semi or fully automated cutting process for high production volumes. Initially, the industrial application of laser cutting involved the cutting of slots in die boards using a 200W laser. Today, laser machines are able to cut a wide variety of metallic materials including superalloys, brass, aluminum, steels, and copper, and nonmetallic materials such as quartz, rubber, cloth, wood, plastic, and ceramic (Dahotre and Harimkar, 2008). Borade (2012) states that the laser cutting process entails laser beam emission when stimulated by a lasing material (radio frequency or a gas). The stimulation is effected when the lasing material is exposed to electrical charges an enclosure. Once the stimulation of laser material occurs, the beam is reflected and bounced off from a partial mirror. The beam is permitted to gather sufficient energy and strength before being released as a jet of monochromatic consistent light. The light further goes through the lens, and is focused to form an intense beam that is less than 0.0125 of an inch in diameter. The width of the beam can be adjusted based on the material to be cut. The width can be as small as 0.004 inches. The surface material’s point of

Jewish Cosmopolitanism in the Modern Era Essay Example | Topics and Well Written Essays - 1000 words - 1

Jewish Cosmopolitanism in the Modern Era - Essay Example The changes of the Jews shall be attributed to the main Anti-Semitic hatred forms that attributed the Jews as unique, thus deserving the hatred they received, and still to some reasonable measure, still receive. These are cultural, economic, religious, political, apocalyptic, and racial perceptions. Major cities in the world are cosmopolitan; meaning that they host diverse cultures, races, religions and tribes. Based on the Anti-Semitic belief by the Jews that predominantly having the desire to exercise the Jewish Culture would lead to the easy identification of Jews, much care is taken. There is also a belief that since the Jews were considered as the Chosen Lot, there was a tendency of them wanting to overturn any other culture and make people assimilate their culture. The result of this fear made the modern-day Jew take up the cultures of various cosmopolitan groups in the city, gifting them with diverse survival tactics that aped all the communities. This gave the modern Jews an upper hand as they were able to interact with all the groups. According to them, this was a survival skill they had to learn in order not to be distinct and conspicuous for any attack from the Anti-Semites. This was good, but eventually, Jews lose their touch with their culture.Judaism, the main Jewish religion, has had a long misunderstanding with Christianity ever since the emergence of Christianity. This misunderstanding arose from various factors that included the differences in beliefs about God.

Behavioural-Based Safety in the Construction Companies Essay

Behavioural-Based Safety in the Construction Companies - Essay Example While there are many other explanations, the research paper will seek to determine the explanations that are applicable to the current case study, which is employee perception of BBS at the workplace, BBS training, safety awareness, safety participation, and group safety culture. A quantitative method study will be used for this research study with a survey-based research design. The research study will utilize probability sampling, which will seek to get at least fifteen labor workers at Tarmac Zawawi LLC. It is expected that high scores in BBS training, perception, awareness, participation, and group safety culture will result in high levels of safety and, therefore, fewer incidents and accidents. Because of the equipment, machinery, working height, and external activities involved in the construction sector, it is one of the most dangerous occupations in the industry. There are a number of factors, which lead to accidents in this setting. One of them is unsafe conditions and behavior, in which the individual’s behavior accounts for approximately 75% of all events (Roughton & Mercurio, 2012: p82). In addition, most studies suggest that unsafe behavior among workers is more to blame than the safety of conditions in the occurrence of accidents. If unsafe conditions do exist and individuals accept the risk associated with the construction and continue normally with their activities, accidents cannot be blamed on the conditions alone. Therefore, failure to identify conditions that are unsafe prior to and during construction, to continue with construction even after the unsafe conditions are identified, and unsafe performance without regard to the conditions at the site are three major reasons for construction site accidents (Roughton & Mercurio, 2012: p86). In  addition, unsafe conditions are brought about by unsafe actions from individual workers and their colleagues, management practices, and inhuman events.  

Framing Decisions Essay Example for Free

Framing Decisions Essay Millhouse on his situation came up with his conclusion upon relying on the structure contained by how the selling was presented to him. No matter how, it is possible that Millhouse had been into a great deal of confusion when he was deciding. It was present in his mind that the company is in need of that supplementary part and is in search of materials that are of good quality. And that this seller has been instinctively conscious of the probable framing Millhouse could have in mind. At the same time, this seller has this skill to do sales talk and persuading a customer was indeed an easy thing on his part. He was capable to handle the situation. A good offer from the salesman was initiated and the selling price was specified: less than 40 cents a day just like the price of a soda. It was presented positively that at the end, the company would be satisfied by a high service utility by just spending likely of only a soda a day. The soda became the entity of assessment and it helped Millhouse comprehend the gains more gamely than the losses. He was also glad that he was not alone to see the benefits of purchasing these goods. He ended up deciding with this framework to buy them because he was swept away by the promises of the benefits presented by the salesman. In looking on the alternative sense, what if Millhouse thought of looking out for better material possible? What if he conducted first price comparison of same material? What if he made calculations in the aggregate expenditure upon purchasing them and rather compares it with the benefits it can give and or with some? The alternative frame could have come up with other results depending on how an individual reacts on a certain presentation of a problem. Factors affecting the alternative framework greatly molds our way of decision making. Also, group decisions may be at variance thoroughly from a one person decision in provisions of endings and/or procedures. So, it states clearly that one can strongly influence the other and by that, moral considerations are being deserted for one’s own good. References Framing. February 05, 2008 retrieved from http://framing. behaviouralfinance. net/

Overture to “William Tell” by Gioachino Rossini Essay Example for Free

Overture to â€Å"William Tell† by Gioachino Rossini Essay 1. Date: 2-3-13 2. Place: Pope Joy Hall 3. Name of ensemble(s) performing: Albuquerque Youth Symphony included string ensembles of the Violin, Viola, Cello, String Bass, and. The Woodwinds Ensemble included the Flute-Piccolo, Oboe, Clarinet, Bassoon; Brass Ensemble included the French horn, Trumpet, Trombone, and the Tuba. As well as the Percussion ensemble. As well as a Keyboard ensemble the Harp 3. Describe the concert venue and where you sat (i.e.: balcony): I took my twelve-year-old stepdaughter with me and we stood out side for about five minutes waiting in line to purchase tickets. Upon entering Pope Joy Hall, we were greeted by an information booth that was filled with flyers and pamphlets and programs to all different venues of art, from orchestras to plays. Lindsey asked me wide eyed; do all these things mean that this is what is showing or playing here? I looked at her and smiled and replied, yes this is Pope Joy Hall, UNM Center for the Arts and they have a variety of things going on all the time. We grabbed some information on what we would like to come and see and headed to the first theater on the left. We walked up to the entrance doors to the theater and were greeted by two very friendly greeters, who handed us our programs. Then, we entered the double doors and were greeted by an eager usher who politely guided us through hand and arm gestures to go down the left isle. Therefore, Lindsey and I sat together in the lower level on the left side middle end row seats. Once seated, I realized that this theater is set up like a small sized concert hall that would typically be set up for an indoor classical music venue. It was very nice and cozy every one was dressed casual to semi-formal and Lindsey was in awe, she had never experienced anything like this before. 4. Were there any spoken remarks about the concert? Yes? No?: Yes If yes, describe generally, what was said: They started with announcements by that first welcomed everyone to the Albuquerque Youth Symphony, and to state that they are audio and video recording the event and we can if we haven’t already signed up for a copy, we can still do so out side the double doors during intermission or after the concert. Then they went over the program pointing out the fundraiser and the new solar panels that are going to be installed in the near future. Thirdly, they made an announcement about a very special Concertos’ Cellist Kayla Mathes, and announced that she was chosen to be a part of the National Youth Orchestra, in New York this summer and touring to Moscow and London with the group. Lastly, they went over the sponsors and then introduced the symphony. 5. Which genres of music were performed? i.e.: symphony, concerto etc.: The Albuquerque Youth Symphony performed an Overture to â€Å"William Tell† by Gioachino Rossini (1792-1868), Triumphal March from â€Å"Aida† by Guiseppe Verdi (1813-1901), Prelude and Liebestod from â€Å"Tristan and Isolde† by Richard Wagner (1813-1883) as well as the Concerto for Violoncello and orchestra in E minor by Edward Elgar (1857-1934). 6. Were any of the works programmatic (music with literary or pictorial? Associations)? Yes No: Yes. If yes, which compositions were programmatic? : Overture to â€Å"William Tell† by Gioachino Rossini a beautifully written piece of music especially of considerable size and complexity. As well as, the Concerto for Violoncello and orchestra in E minor by Edward Elgar, which was filled with raw emotion. 7. Choose two complete works from the program and fill in the blanks: Composition #1: Name of Composer: Gioachino Rossini (1792-1868) Composition Title: Overture to â€Å"William Tell† Movements/ Tempo markings, if through-written, just leave blank: I. III. II. IV. Historical Era of Work: Rossinis’ Overture to â€Å"William Tell† is a mixture of baroque from (1600-1750) classical from (1750-1820) and romantic from (1820-1900). Choose from: Medieval pre-1450, Renaissance – 1450-1600, Baroque 1600-1750, Classical 1750 – 1820, Romantic 1820 – 1900, 20th Century 1901 – 2000, 21st Century 2001 Present Name any solo voice or featured instruments: None Composition #2: Name of Composer: Edward Elgar (1857-1934). Composition Title: Concerto for Violoncello and orchestra in E minor. Movements/ Tempo markings, if through-written, just leave blank: I. III. II. IV. Allegro Historical Era of Work (see description above): Romantic from 1820-1900 and 20th Century from 1901-2000. Name any featured (solo) instruments or vocalists: Kala Mathes solo Cellist. In the space below legibly write a brief narrative summarizing the two pieces listed above. If you prefer, you may attach a typed summary to this page. Choose among these items to discuss: Describe mode, meter, tempo, dynamics, texture. Was the music more consonant or dissonant? Did it have frequent accents, syncopation or modulation? Did the melodies move more in conjunct or disjunct motion? Was there a voice or instrument timbre that affected you emotionally? Rossini’s overture starts with a dawdling introduction and spry melodies invariably leads to an immense crescendo passage, in which Rossini replicates a motif several times, adding instruments and volume with each repetition. Then out of the stillness, a single cello rises sorrowfully from a low E along an arpeggiated cord through an E-minor chord to a high B, 2 ½ octaves higher, while the other cellos lend their harmony in E-minor. Slowly the first cello leads us toward a brighter atmosphere of E-major. Then adds a few pizzicato beats to lend influence and a fragile yet graceful rhythmic emphasis. While adding an overlap of a new, whirling motif by the violas and second violins, as they ask the question and it is answered with three detached chords from the piccolo, flute and oboes. As the tempo hastens the storm begins. I can hear and see the fickleness of falling rain in my mind and through syncopating the raindrops, it drops off the driving beat of the pizzicato double basses. I can feel the harmony as it darkens, mystifying, drawing me back to the ever so moody E-minor. With a monumental arrival of gestures from the violins and woodwinds, the storm unleashes its wrath over rolling the timpani’s, pounding bass drum and a fortissimo piece from the brass chords. Then the descending motif asks in a desolate torrent, that is answered by an equally and majestically ascending motif of the double basses, bassoons and trombones. The climax of cymbals cascading among the whirlwind motif of the flute, piccolo and violins leads into a beautiful breath taking G-major. This then overlaps with the trumpets blaring in E-major with the joining of horns and drums that hold on to a resonant B-major chord that resounded into a galloping anapestic rhythm. This unleashes the contrasting middle section in C-sharp minor that is dominated by a presto line for the strings and woodwinds. Then we find ourselves back to a galloping anapestic measure in E-major that again builds the excitement into the release of the finale. When the hair on my arms were raised, eyes were tear filled, knowing the story behind the music, the life of two brothers who never knew each other, met only once. As one bows down to the other in realization that the other is worthy of praise, honor and recognition, then honors him with an inspiring piece that succeeds to top the ending in triumph. Edward Elgars’ Concerto for Violoncello and orchestra in E minor was alive as it unfolded as an enthusiastically structured, requiem-like a constant outpouring of deep undiluted emotions. The opening of this piece begins with a characteristic of decently and nobly designing the score, is a flourish for the soloist Kala Mathes, and recurs throughout the concerto. The unmistakable main melody-at once was reflective, inspirational, beautiful, and transcendent emerged almost immediately with the violas, before Kala began to play the Cello. Throughout the piece of the movement the theme winds its way through various keys, A, C, G and E minor, while the secondary thematic notes emerge from the clarinets. Then Kalas’ opening flourished as it transformed into a pizzicato passage that appeared in staccato semiquavers. Then in the key of b flat, the Adagio seemed to make time stand still as the beautiful melodious musical lines sang its music of undeniable heartbreak. The symphony at this point was reduced to strings, clarinets, bassoons, and horns as Kala weaved in and out of the symphony fabric in an ever so eloquent song without words, this is where I had goose bumps all over, tears rolling down my face, the power and emotions were overwhelming, for even Lindsey was even crying. The finale nestled back into E minor and had a rondo-like feel to its main theme that echoed the opening. However, nothing could hide the fact that the core of the concerto as a whole is a disposition of acceptance, forbearance and finality. The Albuquerque Youth Symphony played with such passion; it was as if each person and their instrument were one moving in perfect harmony, rhyme, rhythm, body, mind, and spirit. One fluid entity or deity that entranced anyone within ear shot. It was beauty and serenity that was tremendously unbelievable.

Two Step Extraction Of Pyrethrins From Pyrethrum

Two Step Extraction Of Pyrethrins From Pyrethrum The experimental determination of the concentration and yield of pyrethrins from chrysanthemum pyrethrum flower is usually carried out with chromatographic techniques; and accordingly, a lot of methods have been developed over the years [Wang et.al, (1997)]. These include high performance liquid chromatography (HPLC) [Todd et.al, (2003); Essig and Zhao, (2001b)], gas chromatography (GC) [Essig and Zhao, (2001a)] and supercritical fluid chromatography (SFC) [Wenclawiak and Otterbach, (1999)]. GC was chosen for convenience in this study. The first-step involves using n-hexane as solvent to extract the pyrethrins from the solid sample (grounded and unsieved with particles size of about 30 meshes), and then the second-step, a purification step involves the use of supercritical carbon dioxide as solvent to obtain the pyrethrins from the crude hexane extract (CHE). The hexane extractions (100g sample size), in a water bath at controlled temperatures and vigorous stirring, generated pyrethr ins concentrations varying from 69.85 95.50mg/ml and yields of 0.85 3.76% of the dry weight. Extraction efficiencies under several conditions were investigated and the optimum extraction condition was 400C in 4hrs. Compared with the product from the factory, several undesirable components exist in the CHE. The SFE was carried out with a self built unit (extraction vessel of 120ml) with a sample size of 40ml of CHE. Concentrations of 57.25 93.79mg/ml and yields (after the second extraction) of 0.99 2.15% were obtained; with the optimum condition being 350C at a pressure of 20MPa in 2hrs. Compared with the product from the factory, this sample contains two extra components (Tricosane and Tetracosane) also used in insect control. Key words: Solvent extraction; supercritical carbon dioxide; pyrethrins; two-step extraction; crude pyrethrins extract Introduction Pyrethrum flowers are from the Chrysanthemum genus and are known commercially as painted daisies, painted ladies, buhach, chrysanthemum cinerariaefolium, ofirmotox, insect powder, Dalmatian insect flowers, or parexan. It is believed to be recorded first in Dalmatia [Visiani, (1842-1852)]. However, others contend that its insecticidal activity was first proven by Antun Drobac (1810-1882) [Bakaric, (2005)]. Yet there are claims that it was first identified as having insecticidal properties around 1800 in Asia [Jeanne, (2009)]; and that the Crushed and powdered plants were used as insecticides by the Chinese as early as 1000 BC [Amrith, (2004)]. The flower contains about 1-2% pyrethrins by dry weight, but approximately 94% of the total yield is concentrated in the seeds [Casida and Quistad, (1995)]. The chemical structure of the active ingredients, pyrethrins I and pyrethrins II was identified in 1924 [Chandler, (1948); Coomber, (1948)]. Kenya is the worlds main producer today with more than 70% of the global supply [Jones, (1973)]. The natural active ingredients are referred to as Pyrethrins; consisting of cinerin I, jasmolin I, pyrethrin I, cinerin II, jasmolin II and pyrethrin II. The first three (chrysanthemic acid esters) are referred to as pyrethrins I (PYI), and the rest (pyrethric acid esters) as pyrethrins II (PYII) [Essig and Zhao, (2001a)]. Pyrethrins, though insoluble in water, are soluble in many organic solvents [WHO, (1975)]. They are non-volatile at ambient temperatures; non-toxic to mammals and other worm-blooded animals; highly unstable in light (photodegradable); biodegradable; but toxic to aquatic animals [Todd et.al, (2003); Chen and Casida, (1969); WHO, (1975)]. Their usage is mainly in biological crop protection; domestic insecticides [Gnadinger, (1936)]; and the formulations of synthetic pyrethroids [Todd et.al, (2003)]. Although pyrethrins are soluble in a number of organic solvents (benzene, hexane, petroleum ether, alcohol, acetone, meth anol, chlorinated hydrocarbons, etc) other considerations (practical, economic and environmental concerns) limit the usage. These considerations reduce the choices to just few. One of the qualities of Hexane in extracting pyrethrins is its ability to effectively dissolve the active ingredients minus contaminants. Another is that its removal from the concrete is achieved at lower temperatures; limiting degradation due to prolonged heating. Again, its low boiling point is a needed quality and it can be recycled, reducing the weight of the concrete. Above all, it is inexpensive, considered environmentally friendly, less toxic, non-corrosive, and non-reactive; traits which make it the dominant solvent adopted, especially for processing plant (biological) materials (products) which are often thermally labile, lipophilic, and non-volatile and are required to be kept and processed at around room temperatures. Carbon dioxide (CO2) has a critical temperature of 31oC which makes it particular ly an attractive medium for these kinds of tasks. Though other supercritical fluids (SCFs) show critical temperatures in this critical state and can be adapted as solvents, they are often difficult to handle and obtain in pure state, may be toxic, explosive or ecologically unsafe. Supercritical carbon dioxide (Sc-CO2) is by far, the most extensively used due to its non-toxic, inert and non-flammable nature. It is also natural, inexpensive, plentiful, non-toxic and inflammable and generally environmentally accepted [Schneider et.al, (1980)]. Its most important properties are enhanced density, viscosity, diffusivity, heat capacity and thermal conductivity. Higher densities contribute to greater dissolution of compounds while low viscosities enable easy penetration into samples and facilitation of flow of extracted (targeted) molecules from the source materials with fewer hindrances [Dunford et.al, (2003)]. Diffusivity offers easy and faster transport through samples; hence offers bett er extraction strengths; and dissolved ingredients are also easily separated from the supercritical solvent by drop in pressure [Fattori et.al, (1988)]. Sc-CO2, for the above and many reasons used as solvent in extraction saves both time and money while retaining overall extraction precision and accuracy with high purity and healthy products that are of excellent quality [Raventos et.al, (2002); Mohamed and Mansoori, (2002)]. Expectedly, a lot of research is now focused on the extractions of plant materials with supercritical carbon dioxide due primarily to the global growing solvent (organic) regulations and more importantly, the economic benefits (in terms of low operating temperatures; faster extractions and easier purifications, and of course better product quality). Stahl and Schutz [Stahl and Schutz, (1980)] extracted pyrethrins with CO2 and proposed that in the 20 °C to 40  Ã‚ °C temperature range decomposition (usually associated with pyrethrins extraction) does not occu r. Sims patented in the US, an extraction of pyrethrins using liquid carbon dioxide [Sims, (1981)] and Wynn and others patented using Sc-CO2 [Wynn et al. (1995)]. Wenclawiak and coworkers compared extracts obtained with ultrasonic (USE) and Soxhlet extractions (SEX); with hexane and Sc-CO2 extractions (SCE) and reported that direct extraction with SCE gave better pyrethrins content [Wenclawiak et.al, (1995)]. 2. 0. Experimental 2.1. Materials and Chemicals Grounded chrysanthemum (light green with a characteristic smell) sample and two pyrethrum concretes (yellow) were obtained from Yunnan Juxiang Natural Plant Products Company in China. The pyrethrins content of the concretes was claimed to be 50.0% (29.50% PYI and 20.50% PYII) and 85.15% (46.33% PYI and 38.82% PYII). Six individual standard solutions (using standard addition method) were prepared (from the 85.15% PY concrete-higher content, less impurities) for standardization of the analytical method. Analytical grade hexane (97.0%) and Ethanol (99.7%) were purchased from Sinopharm Chemical Reagent Co. Ltd in China, and used directly without any pre-treatment. CO2 (99.0 %) gas was supplied by Xin Hongli Gas Company also in China. 2.2. Experiments Three different experiments were performed: To establish the standard/calibration curves for determining the components, To implement hexane extraction and determine the yield of total PY in the grounded sample, and To implement SFE and determine the yield of total PY in the CHE. 2.3. Establishing Standard Curves The GC (Agilent) conditions used for establishing the standard curves are as follows: split injector with 20:1 split ratio at 2500C; Nitrogen as carrier gas at 1.6mL/min  ¬Ã¢â‚¬Å¡ow rate; injection volume of 0.1  µL; temperature program started at 1800C, kept for 11 minutes, heated at 100C/ min to 2000C, kept for 8 minutes, heated to 210 0C at 100C/min, kept for 18 minutes, then heated to 2450C at 30 0C/min, maintained for 4 minutes; FID detector; HP-5 Column, 30 mm 0.32 mm id., 0.25  µm  ¬Ã‚ lm thickness. This column was chosen because it gives the best resolution, identi ¬Ã‚ cation and quanti ¬Ã‚ cation for products containing OH and C=O [Rosana, (2003)]. 2g (85.15% concrete obtained from the company) of the extract was transferred into a 100mL flask containing 10mL ethanol, and then made up to the final volume of with ethanol and mixed well. Six aliquots (1mL, 2mL, 4mL, 8mL, 16mL and 32mL) of this solution were transferred into a 50mL flask each and diluted with et hanol again to the mark. We then calculated the concentrations of the PY in each aliquot, considering the percentage of each group (PYI and PYII) in the sample provided (Table A1 in the Appendix), injected (with a micro syringe) 0.1 µL of each solution into the GC after filtering (0.45-ÃŽ ¼m membrane filter) and recorded the elution times and corresponding peak areas (Table A2); subsequently, established the standard curves to express the relationship between the areas produced by the GC and the concentrations (Figure 2). 2.4. Hexane Extraction We extracted pyrethrins (from 100g of grounded sample of particle size of about 30mesh) with hexane in a water bath (YUHUA, DF-101S) in batches at different temperatures (35oC, 40 oC, 45 oC, 50 oC, 60 oC and 70 oC) and times (3hrs, 4hrs, 5hrs, 6hrs and 7hrs) in a 1000mL round-bottom flask, installed with a condenser. Agitation was achieved by stirring vigorously with three big size magnetic stirrers at a speed of 20rpm. The hexane was then removed from the pyrethrin concrete with a rotary evapourator (YUHUA, RE-2000B) at a temperature of 35 oC at a speed of 185rpm to obtain concentrated Crude Hexane Extract (CHE). Each concentrated sample was thereafter, filtered (0.45 µm) and 0.1 µL analyzed (Tables A3). This method has the advantage that the solvent is repeatedly recycled and temperature can be controlled. It offers a light coloured product with high recovery rate of pyrethrins; however, not only the desired components are extracted (Figure 3). Other soluble and hydrophobic sub stances (waxes and pigments) are also extracted [Kiriamiti et al, (2003)]. The solvent is removed by vacuum at lower temperature and the waxy thick mass left is the concrete; composed of essential oils and other oil soluble (lipophilic) materials. 3.0. Results and Discussion 3.1. Extract The extracts (CHE) contain pigments, fixed oils and waxes whose colour is deep yellow with characteristic smell. It also contains several undesired components (Figure 3) compared with the pure sample from the factory (Figure 1). 3.2. Effect of Extraction Temperature Temperature has long been reported to be a crucial factor in the extraction of natural pyrethrins [Atkinson et.al, (2004)]. Pyrethrins are sensitive to temperature (thermo labile) and are therefore, unanimously reported to degrade above 40oC [Stahl and Schuzt, (1980); Gourdon and Romdhane, (2002); Wynn et al, (1994)]. We investigated the effect of different extraction temperatures (40oC, 50oC, 60oC and 70oC) in fixed extraction times (5 hr gave better results than 6hr and 7hr). Our results conform to the reports (refer to Figure 4 and Table A3); the best yield (1.42) and PYI: PYII ratio (4.75) is at 40oC (but the best PYII yield-0.33 is at 70oC). This suggests that targeted components are extracted effectively at this temperature (40oC), above which two problems occur (separately or simultaneously): one is the extraction of more undesirable components at the expense of pyrethrins and the other is the decomposition of pyrethrins to form iso-pyrethrins [Stahl and Schuzt, (1980); Stahl, (1998); Gourdon and Romdhane, (2002); Wynn et.al, (1994)] thereby reducing the yield as seen. 3.3. Effect of Stirring We compared the effect of two stirring methods on extraction yield: the first with one magnetic stirrer and the second with three magnetic stirrers. The results are shown in Table A4, confirming that stirring improves extraction yield by facilitating the dissolution of the active ingredients and the effective distribution of heat. The extractions (at 40oC in 5hr) were repeated severally to ensure reproducibility and accuracy. 3.4. Effect of Extraction Time We further investigated the effect of extraction time by fixing the extraction temperature at 40oC with three magnetic stirrers; to establish the optimum extraction time (our initial time parameters were 5hr, 6hr and 7hr in which 5hr was the best). From Figure 5, the extraction yield increases steadily from 3hr to a peak at 4hr (see data in Table A5). Within this range, more desired components are extracted but after 4hr the yield decreases indicating that with prolonged time, even at the safest extraction temperature (40oC), less and less desired components are extracted and/or they decompose resulting in the decrease in yield. The drop in yield is consistent from 4hr (3.76%) to 6hr (2.15%). This implies that the optimum time (within the times investigated) is not 5hr as initially expected but rather 4hr. However, the ratio of PYI: PYII is best in 6hr (5.14). From 3hr to 4hr, the yield for both PYI and PYII appreciated but the increment in PYI (0.74) is greater than that of PYII (0. 38) hence the drop in the ratio. Between 4hr and 5hr, there is decrease in both PYI and PYII yields. Again, the decrease in PYI (0.98) is greater than that of PYII (0.49) accounting for the drop in ratio. The same reason accounts for the drop in ratio from 5hr to 6hr. 3.5. Effect of Concentrating CHE The effect of concentrating the CHE, on both PYI and PYII yield was analyzed (Table A6). Even though the concentrating temperature (35oC) was below the temperature above which PY degrades (40oC), there was loss in PY yield indicating degradation. This in our view may be due to the exposure of the pyrethrins directly to heat. As more hexane is evapourated, pyrethrins which hitherto, were locked in the solid sample matrix; surrounded by hexane and as such shielded from direct heat, is now in direct contact with the heat; and since they are sensitive to heat, decomposition is inevitable. However, the decomposition is small and negligible (about 2.25mg/ml which is about 0.41% of the total yield) due to perhaps the short concentrating time (about 30 min). 4.0. Supercritical Fluid Extraction (SFE) The CHE is too thick (viscous) to be used directly, coupled with the presents of undesirable components (waxes and pigments). A further treatment, usually with another solvent that only dissolve the desired compounds from the concrete is necessary. Different from other works, this study carried out SFE on the CHE as a purification step. We looked at the effect of time (hr), temperature (0C) and pressure (MPa) on extraction quality and yield. We have not studied the effect of particle size and pre-treatment; for information on this area, see the works of Kiriamiti and others [Kiriamiti et al, (2002)]. 4.1. Sample We concentrated the CHE in a rotary evapourator (from 500ml to 40ml at 185rpm in 30 minutes) for the SFE. 4.2. Extraction Process At the beginning of the extraction (Figure 6), all the check valves are closed except valve #2. This allows the CO2 gas into the compressor #4 (OLSB by Zheng Zhou Co. LTD, China) to be compressed, and the pressure gauges are allowed to attain equilibrium at a set pressure (10, 15 and 20 MPa). Valve #5 is then opened and the compressed fluid (Sc-CO2) is fed into the bottom of the extraction vessel #7 (120ml capacity) for up flow extraction configuration, containing the CHE (40ml) and metal fillings to facilitate effective contacting (increase internal mass transfer); which had earlier been heated to a set temperature (350C, 370C and 390C) and allowed to attain constant temperature with the help of the water bath #6. An appreciable time is allowed (5-10mins) for the total and complete dissolution of the crude extract and then valve #8 is opened and maintained until the pressure is in equilibrium again. The pressure reducing valve #9 is opened finally to collect the pyrethrins in the fl ask #10. A mass flow meter helps to determine the flow rate (1.5L/min). The extraction process is run and stopped at set times (1hr, 2hr and 3hr) and the extracts analyzed with the results tabulated (Table A8). The Metal fillings after each run were washed (10ml or 5ml of Hexane) and collected as residues to check for complete extraction. 5.0. Results and Discussion 5.1. Extracts The extracts did not contain visible pigments as was seen in the CHE. The colour was also different; light yellow to orange but the smell was similar. It also contained two extra components (Figure 10) which was found (by GC mass spectrometry) to be Tricosane (Peak 6) and Tetracosane (Peak 7). This was as a result of comparison with the pure sample from the factory (Figure 1). We compared the yield of the extracts after solvent extraction, concentrating the CHE and the SFE and noted that there was difference. The yield from the SFE was less due possibly, to the relatively high pressures used. Separation of the Sc-CO2 and the product is achieved by a drop in pressure. These high pressures have the tendency of causing the products to remain in the BPR or along the pipe (between the BPR and the flask in Figure 6) due to clotting as a result of the pressure drop; in spite of our use of heating tapes to minimize this effect. This is confirmed by the value of the yield in the residue (0.05%) which is far less compared to the difference between the concentrated sample yield (3.30%) and that of the SFE (2.15%, see Table A10). 5.2. Effect of Pressure According to Kiriamiti and others, the quantity of pyrethrins extracted decreases with decreasing pressure due to (i) the effect of density on the solubility of pyrethrins, (ii) the slightly high density of CO2, (iii) the moderate variation in density with pressure, and (iv) the very low undesirable extracted products [Kiriamiti et al, (2002)]. Our results conclusively conform to this (Table A7). The best extraction pressure was at 20MPa (at 350C and 2hrs). The concentration of PY also increases within this pressure range (from 81.34mg/ml 93.79mg/ml). Similar phenomenon was observed for both 1hr and 3hrs, indicating that more pyrethrins were extracted than the undesirable components within this pressure range (Figure 7). 5.3. Effect of Extraction Time The quantity of pyrethrins extracted decreases with extraction time at higher temperatures (above 400C), explaining that either pyrethrins decompose at these elevated temperatures or more undesirables are extracted instead. From Table A8, the yield and concentration of PY increase from 1hr to a maximum in 2hr (1.35% 2.15% and 90.42mg/ml 93.79mg/ml at 350C and 20MPa). Both however decrease in 3hr (1.24% and 82.30mg/ml, Figure 8). This implies that pyrethrins were extracted faster than the undesirables from 1 to 2hr but as the extraction proceeds, more undesirables were then extracted at the expense of the pyrethrins or which decompose. Therefore, prolonged extraction time rather favours the extraction of undesirables or promotes decomposition of pyrethrins. 5.4. Effect of Temperature Pyrethrins are thermo labile and therefore require being processed at low temperatures. Therefore, high extraction temperature does not only degrade the pyrethrins but also favours the extraction of undesirables (Figure 9). Within the temperature range we investigated, the best yield was at 350C (Table A9). 6. 0. Conclusions Pyrethrins are usually purified with organic solvents (ethanol, methanol, acetone, acetonitrile, petroleum ether etc) or their mixtures [Kasaj et.al, (1999); Henry et.al, (1999); Duan et.al, (2006)] which are generally expensive, flammable and explosive and above all, face strict legislative controls [Patrick, (2003)]. Alternatively, carbon dioxide is used to refining and purification. Sims proposed the use of liquid carbon dioxide [Sims, (1981)]. Similar to our method, Kiriamiti and others reported the extraction of pyrethrins from crude hexane extract (CHE) from batch extraction experiment using carbon dioxide [Kiriamiti et.al, (2003)] but with different extracting conditions and analysis method (HPLC). It is worth noting that our set up is very simple and less expensive coupled with the fact that our sample, after the SFE, contains two extra components (Tricosane and Tetracosane) not reported so far as part of the purification step. These components are not hazardous [Directive 67 /548/EEC] and have similar characteristics (may cause respiratory and digestive irritations), uses (as insecticides and biopesticides) and effects (they may not be detrimental to the insects but they certainly disrupt their behaviuor patterns and flushes them out for the more deadly pyrethrins I) as pyrethrins II [Chemcas.org; Chemnet.com; PPDB, (2011); Wylie, (1972); Lewis et.al, (1975)]. We developed a simple but efficient two-step procedure for the extraction of pyrethrins from chrysanthemum (pyrethrum flowers) and investigated the effect of various operating parameters on concentration and extraction yield. Based on the experimental results, we conclude that the two-step extraction of pyrethrins (first with hexane in a water bath and second with SC-CO2 as a purification step) is feasible and effective; the optimum extraction condition for high pyrethrins yield (3.76%) for the n-hexane extraction was 400C in 4hr; that vigorous stirring facilitated this; and that it is possible to achieve extraction yield of 3% or even more envisaged by Casida and Quistad. To our knowledge, this is the first time such a high recovery of pyrethrins is reported. A number of reasons may be attributed to this high recovery: i) extraction procedure, ii) choice of solvent, iii) vigorous stirring and above all, vi) the type of sample used. We further conclude that for the SFE (2.15% and 93.79mg/ml) the optimum conditions were 350C, at pressure of 20MPa in 2hr. 7.0. References Amrith S. Gunasekara, (2004): Environmental Fate of Pyrethrins, Environmental Monitoring Branch, Department of Pesticide Regulation, 1001 I Street, Sacramento, CA 95812 Atkinson B. L, Blackman A. J, and Faber H, (2004): The degradation of the natural pyrethrins in crop storage, J. Agric. Food Chem. 52, 280-28 Bakaric P, (2005): BuhaÄ  prirodni insekticid, Gospodarski list 17: 41-45 Casida J. E and Quistad G. B, (1995): Pyrethrum Flowers: Production, Chemistry, Toxicology, and Uses, Oxford University Press, New York Chandler S. E, (1948): The Origin and Early History of the Production of Pyrethrum in Kenya, Pyrethrum Post 1 (1): 10-13 Chen Y-L, and Casida J. E, (1969): Photodecomposition of Pyrethrin I, Allethrin, Phthalthrin, and Dimethrin, J. Agr. Food Chem. 17: 208-215 Coomber H. E, (1948): The Chemical Evaluation of Pyrethrum Flowers, Pyrethrum Post 1 (1): 16-19 Directive 67/548/EEC: The Dangerous Substances Directive (as amended) is one of the main European Union laws concerning chemical safety. Duan Wei, Zhengguo Li, Guomin Wang, Yingwu Yang, Yingguo Li and Yuxian Xia, (2006): Separation and purification of Natural pyrethrins by reversed phase high performance liquid chromatography, Chin. J. of Anal. Chem., vol.34, is.12, pp 1776-1779 Dunford N. T, Teel J. A and King J. W, (2003): A Continuous Counter Current Supercritical Fluid Deacidification Process for Phytosterol Ester Fortification in Rice Bran Oil, Food Research International 36, 175-181 Essig K and Zhao Z, (2001b): Method Development and Validation of a High-Performance Liquid Chromatographic Method for Pyrethrum Extract, J Chromatogr Sci 39 (4): 473-480 (8) Essig K and Zhao Z. J, (2001a): Preparation and characterization of a Pyrethrum extract standard. LC/GC 19(7): 722-730 Fattori M, Bulley N. R, and Meisen A, (1988): Carbon Dioxide Extraction of Canola See: Oil Solubility and Effect of Seed Treatment. J. A. O. C. S. 65, 968-974 Gnadinger C. B, (1936): Pyrethrum Flowers. 2nd Ed. McLaughlin, Gormley, King, Minneapolis, Minnesota Gourdon C and Romdhane M, (2002): Investigation in Solid-Liquid Extraction: Influence of Ultrasound, Chemical Engineering Journal 87, 11-19 Jeanne Roberts, (2009)  : Insecticide Treated Mosquito Nets and Malaria Prevention: Weighing the Benefits, Naming the Benefactors at www.celsia.com Jones G. D. G, (1973): Pyrethrum Production, In Pyrethrum; The Natural Insecticide, J. E. Casida (Eds.), Academic Press. New York, NY, 17-21 Kasaj D, A. Rieder, L. Krenn and B. Kopp, (1999): Separation and Quantitative Analysis of Natural Pyrethrins by High-Performance Liquid Chromatography, Chromatographia Vol. 50, No. 9/10 Kiriamiti H. K, Camy S, Gourdon C and Condoret J.S, (2003): Pyrethrin Extraction from Pyrethrum Flower using Carbon Dioxide, J. Supercrit. Fluids, 26, 193-200 Lewis W. J, Richard L. Jones, Donald A. Nordlund and Gross H.R JR, (1975): Kairomones and their use for the management of entomophagous insects: II Mechanisms causing increase in rate of parasitisation by Trichogramma spp, J. Chem. Ecol., vol. 1, No. 3, pp 349-360 Mohamed R. S and Mansoori G. A, (2002): The Use of Supercritical Fluid Extraction Technology in Food Processing, Featured Article, Food Technology Magazine, June, The World Markets Research Centre, London, UK Patrick Pelerin, (2003): Comparing Extraction by Traditional Solvents with Supercritical Extraction from Economic and Environmental Standpoint, Proceedings of the 6th International Symposium on Supercritical Fluids, TOME 1 Raventos M, Duarte S, and Alarcà ³n R, (2002): Application and Possibilities of Supercritical CO2 Extraction in Food Processing Industry: An Overview, Food Sci. Technology International, 8 (5), 269-284 Rosana V, (2004). Optimization of Gas Chromatographic-mass Spectrometric Analysis for Fatty Acids in Hydrogenated Castor Oil obtained by Catalytic Transfer Hydrogenation. Analytica Chimica Acta 505, 223-226 Schneider G. M. V, Stahl E and Wilke G, (1980): Extraction with Supercritical Gases, Verlag Chemie, Deerfield Beach, Basel Sims M, (1981): Liquid carbon dioxide extraction of pyrethrins, US Patent no. 4281171 Stahl E and Schà ¼tz E, (1980): Extraction of Natural Compounds with Supercritical Gases, J. Med. Plant Res. 40, 12-21 Todd G. D, Wohlers D, and Citra M, (2003). Toxicology Profile for Pyrethrins and Pyrethroids, Department of Health and Human Services, Agency for Toxic Substances and Disease Registry, Atlanta, GA Visiani R, (1842-1852): Flora Dalmatica, Lipsiae; In Flora Europaea; vol 3, Cambridge University press Wang I. H, Subramanian V, Moorman R, Burleson J and Ko J. R, (1997). Direct Determination of Pyrethrins in Pyrethrum Extracts by Reversed-Phase High Performance Liquid Chromatography with Diode-Array Detection. J. of Chrom. 766, 277-281 Wenclawiak B. W and Otterbach A, (1999). Supercritical Fluid Extraction Kinetics of Pyrethrins from Flowers and Allethrin from Paper Strips. J. Anal. Chem. 365 8, 472-474 Wenclawiak B. W, Krappe M and Otterbach A, (1995): In Situ Transesterification of the Natural Pyrethrins, J. of chrom. A, 785, 263-267 World Health Organization, (1975): Data Sheet on Pesticides No. 11, Pyrethrins (www.inchem.org/documents/pds/pds/pest11_e.htm) Wynn H. T. P, Cheng-Chin C, Tien-Tsu S, Fong L, and Ming-Ren S. F, (1995): Preparative Supercritical Fluid Extraction of Pyrethrins I and II from Pyrethrum Flower; Talanta 42, 1745-1749

Mozart :: essays research papers

Wolfgang Amadeus Mozart 1756-1791 Probably the greatest genius in Western musical history, Wolfgang Amadeus Mozart was born in Salzburg, Austria, Jan. 27, 1756, the son of Leopold Mozart and his wife, Anna Maria Pertl. Leopold was a successful composer and violinist and assistant concertmaster at the Salzburg court, whose archbishop, Sigismund von Schrattenbach, encouraged the activities of Leopold and his remarkable children. Wolfgang began composing minuets at the age of 5 and symphonies at 9. When he was 6, he and his older sister, Maria Anna, embarked on a series of concert tours to Europe's courts and major cities. Both children played the keyboard, but Wolfgang became a violin virtuoso as well. In 1762 the Mozart children played at court in Vienna; the Empress Maria Theresa and her husband, Emperor Francis I, received them cordially. Later the Mozart children displayed (1763-66) their talents to audiences in Germany, in Paris, at court in Versailles, and in London (where Wolfgang wrote his first symphonies and was befriended by Johann Christian Bach, whose musical influence on Wolfgang was profound). In Paris the young Mozart published his first works, four sonatas for clavier with accompanying violin (1764). In 1768 he composed his first opera, La Finta Semplice, for Vienna, but intrigues prevented its performance, and it was first presented a year later at Salzburg. In 1769-70, Leopold and Wolfgang undertook a tour through Italy. This first Italian trip culminated in a new opera, Mitridate, re di Ponto, composed for Milan. In two further Italian journeys he wrote two more operas for Milan, Ascanio in Alba (1771) and Lucio Silla (1772). In 1772, Archbishop von Schrattenbach died, to be succeeded by Hieronymus von Colloredo. The latter, at first sympathetic to the Mozarts, later became irritated by Wolfgang's prolonged absences and stubborn ways. In 1772, von Colloredo retained Wolfgang as concertmaster at a token salary. In this capacity Mozart composed a large number of sacred and secular works. Wishing to secure a better position outside Salzburg, he obtained permission to undertake another journey in 1777. With his mother he traveled to France, where he composed the Paris Symphony (1778); he could find no permanent position, however. His mother died in Paris. When he returned to Salzburg he was given the position of court organist (1779) and produced a splendid series of church works, including the famous Coronation Mass. He was commissioned to compose a new opera for Munich, Idomeneo (1781), which proved that he was a consummate master of opera seria.

Vouchers and School Choice - The Use of School Vouchers :: Argumentative Persuasive Essays

Use of School Vouchers There has been a lot of debate recently over the use of school vouchers. Voucher programs offer students attending both public and private schools tuition vouchers. It gives taxpayers the freedom to pick where their tax dollars go. In theory, good schools will thrive with money and bad schools will lose students and close its doors. Most people feel that taking taxpayer money from public schools and using this money as vouchers for private schools is a violation of the constitution. Most private schools in America right now are run by religious organizations. There has been a lot of controversy over this issue mainly because of the importance of an education in a modern society. School choice initiatives are based on the premise that allowing parents to choose what schools their children attend is not only the right thing to do, but is also an important way for improving education. Instead of a one-size-fits-all model, School choice programs offer parents various options from which to pick the educational settings they believe will work best for their child. However, there is Supporters of school vouchers claim that it levels the educational playing field for lower income families who would have the option to send their kids away from an "ineffective" poorly funded public schools. Some lower class families feel that their kids would have a better chance with a tuition voucher to go to a private school where more money is spent on education. Many feel that vouchers would undermine public schools, by taking away public money for smaller class sizes, teacher training and innovative curriculum. Also, many feel that vouchers would erode the support for public education. In Milwaukee, voucher schools say they do not give special services to students with disabilities. Most of the voucher schools refused to sign a letter that they will honor constitutional rights such as free speech and due process. The letter stated that the schools would not discriminate on the basis of sexual orientation, pregnancy, or marital status. Despite the controversy surrounding vouchers, the private school choice movement may be gaining support. In June of 1999, The Florida legislature approved a plan to give children in the state's worst schools taxpayer-funded tuition payments to attend qualified public, private, or religious schools.

Brazil El Alto :: essays research papers

Part B: Dramatic Discussion Biu Thank goodness is carnival time again, and the best part is that this year I’m going to wear a really nice red dress. My belly is not bothering me and my kids are big enough to take care off themselves, they probably will be playing all night on the street along with the other kids of the â€Å"el barrio†. My oldest daughter probably will stay with her boyfriend. Felix I got to work this week, so I’m gona have a wonderful time this carnival weekend, I’ll get drunk and party with my friends, this will be my best carnival ever. Dona Felipa I don’t understand you people. You barely can sustain yourself and when ever you got work at the sugar cane you always spend all your money available. Why don’t you take care of your wife and the son to be born soon. You Biu, I understand that carnival time is very important for us, but I don’t want you to be sick and unable to work for me later on. Felix I respect your point of view Dona Felipa, but even though we are poor, we still have the right to have fun. Carnival week is for everybody here in Brazil, if we can’t have fun on only this sacred week, where else and what else can we do to entertain ourselves. Biu Felix should take care of his family I have a son in my belly from us, from Felix, but I agree that carnival time is for party and is for everybody to enjoy. We are so poor and miserable that carnival is the only thing no body can take away from us. We live in misery, we don’t have nor running water nor clean water, we even don’t eat regularly, but carnival time is a brief moment for us to escape our reality, our miserable reality, if we cant have that little thing, we might kill ourselves as well. Felix Some day, I’ll be rich enough to be able to enjoy carnival where the rich people go. I’ll mingle with the government and high society people of the Alto. Someday my woman will never have to work again. Someday my woman will never have to wash clothes for others never again. Dona Felipa I think Felix, that you are a good man, and you want the best for yourself and for your family. But I think you are a fool by thinking in that way.

Is Human Population Growth A Threat Environmental Sciences Essay

Even though population is frequently considered a sensitive subject, it is going progressively hard to disregard the construct that population growing threatens the environment. The rapid addition in population growing over the past few centuries has led to an increasing involvement in, and a turning concern for population growing as one of the cardinal menaces to the environment. A menace to the environment can be in many different signifiers, such as dirt eroding, clime alteration, deforestation, wastes, and pollution. The purpose of the undermentioned essay is to research how population growing is considered to lend to these issues and degrade the environment. In order to accomplish this purpose the essay will be split into two chief parts. The first subdivision will sketch theories that argue population growing is a menace to the environment. This will be supported by Malthus and Meadows et Al. In order to derive a compendious analysis this essay will concentrate on the natural e nvironment, in peculiar researching how deforestation is threatened by population growing. However, the 2nd portion of the essay will dispute this and intent that population growing does non jeopardize the environment. It will reason that an increasing population could better environmental quality. It besides will claim if resources are managed sustainable so population growing will non negatively affect the environment. This is supported by Tiffen and Mortimore and Fox. Local instance surveies are used as micro surveies show the relationship between population and deforestation more clearly, as macro surveies are affected by many other influences. Finally the decisions reached are population growing is non the root cause of environmental harm. If resources are managed sustainably and new engineerings are used, so population growing itself would non endanger the environment. A positive correlativity between population growing and environmental harm â€Å" Overpopulation [ is ] our figure one environmental job † ( Rodnguez-Tnias 1994:1379 ) . Since 1650 the rate of population growing has increased. This has resulted in a rapid addition of the universe population which â€Å" rose from 3.3 billion in 1965 to over 6 billion by the twelvemonth 2000 † . Thus universe population about doubled in merely 35 old ages and the rate of growing itself was besides lifting. Furthermore a billion people were added to the universe population from 1987 to 1999, an addition equivalent to the entire universe population in 1804 ( Panayotou 2000 ) . This comparatively recent addition in universe population has led to a climb concern for how population growing affects the natural environment and natural resources ( Meadows et al 2005:28 ) . There are many grounds as to why population growing is seen as a menace to the environment. For illustration, human populations use up natural resources, omit nursery gases lending to climate alteration, destroy home grounds ensuing in loss of biodiversity, and increase air and H2O pollution degrees. Hence, about all environmental issues are either straight or indirectly related to population. Furthermore, it is frequently reported in the media that a turning population is an environmental menace, farther increasing the concern. For illustration Andrew Woodcock studies in The Independent that a â€Å" flourishing population is a menace to climate alteration † ( 2006 online ) . There has been a coincident tendency of a growing in population and a steep lessening in environmental quality and an addition in resource depletion ( Panayotou 2000 ) .Consequently, population growing is frequently considered the greatest and cardinal menace to the environment. The argument on the correlativity between population and the environment began over 150 old ages ago when classical political economic experts such as Malthus ( 1798 ) identified a relationship between population and nutrient supply. He argued that population grew exponentially, whereas nutrient supply would merely turn arithmetically, ensuing in major nutrient deficits. He claimed that the force per unit area on agricultural land would ensue in a diminution in environmental quality, coercing cultivation of poorer quality land. He criticised the thought that agricultural betterments could be made and spread out with bounds and claimed that the power of population growing was greater than the Earth ‘s ability to back up adult male. Malthus concluded that population growing must limited to stay within environmental limitations, as the Earth ‘s resources are finite. Malthus ‘ theory that the size of population is dependent on nutrient supply and agricultural methods, This thought was resurrected in the twentieth century, by cardinal publications, most notably The Limits to Growth by Meadows et Al ( 1972 ) and The Population Bomb by Ehrlich ( 1968 ) . This new organic structure of work by modern-day writers is referred to as neo-Malthusianism. The argument nevertheless has shifted from agricultural land to concerns about the function of population growing in the depletion of other natural and renewable resources, and the consequence of population growing on clime alteration and on biodiversity loss. Meadows et Al ( 1972 ) argued that population growing can make jobs because of environmental bounds. They argued that population growing can non go on indefinitely and used by informations to foretell future tendencies in universe population, resource depletion, pollution and nutrient production. They claimed that the bounds of the planet will be reached within the following century and that population could therefore non transport on turning. In their 30 twelvemonth update in 2005 they argued their decisions were even more of import today. They claimed that there is now land scarceness and the bounds have been approached, which is particularly serious as population keeps lifting and resources are being depleted. Growth in the Earth ‘s population could take to the possibility for a possible ruinous wave-off ( Meadows et al 2005 ) . Livi-Bacci ( 2001 ) points out that in Bangladesh the bounds have already been reached, hence population can non transport on turning. This is similar to Ehrlich ( 1968 ) who argued that there should be action to cut down population growing otherwise there would be aggregate famishment. The growing of universe population increases the demands on natural resources, doing it hard to protect these resources, therefore worsening environmental quality ( Sitarz 1993 ) . Hence there are grounds to worry about the consequence population growing will hold on the environment in the long term ( Sen 1994 ) . Consequently the consensus is that there is a â€Å" population job † ( Neumann 2004:817 ) . Population growing causes jobs in the local environment. There is no individual usher to analyzing the province of the environment ; therefore the relationship between population and environment is normally evaluated in footings of single resources or measurings of environmental quality ( Panayotou 2000 ) . Environmental quality can be measured by the stock of woods or by the absence of air and H2O pollution. The affect population growing has on deforestation has received considerable attending as woods play a cardinal function in wildlife home grounds, the C rhythm, and a beginning of natural stuff. At the planetary graduated table deforestation contributes to planetary heating, and at a local graduated table leads to dirty debasement ( Fairhead and Leach 1995, Nyerges and Green 2000 ) . There is grounds which supports Malthusian statements that an increasing population has a negative consequence on environmental stocks. The function of population growing is peculiarly clear in delicate environments such as woods ( Livi-Bacci 2001 ) . The cause of deforestation is often seen as a consequence of population force per unit areas as population growing increases the demand for cultivable land, ensuing in a transition of forest land to other utilizations ( Cropper and Griffith 1994 ) . Malthus argued population growing would ensue in a higher demand for agricultural land and this consequences in a diminution of forest land peculiarly in Africa and Latin America ( Livi-Bacci 2001 ) . 60 % of the universe ‘s deforestation is a consequence of the demand for more agricultural land ( Pimentel and Pimentel 1999 ) . Each twelvemonth, â€Å" 70 million people are added to universe population, largely in developing states and 15 million square kilometers of woods disappear à ¢â‚¬  ( Panayotou 2000:25 ) . This research led to many people speculating that more people must ensue in fewer woods, as the higher the population growing, the faster this procedure will take topographic point ( Ehrlich and Ehrlich 1990, Rudel 1991 ) . This will do a steep lessening in forest size from twelvemonth to twelvemonth. Forests often owe their beginnings to depopulation, hence ensuing in the decision that population growing causes deforestation, particularly in hapless and developing states ( Fairhead and Leach 1994 ) . This affect is more ascertained at the local degree, for illustration Cropper and Griffith ( 1994 ) used panel informations for Asia, Africa and Latin America between 1961 and 1988 and found a positive relationship between deforestation and population growing. Additionally, Fairhead and Leach ( 1995 ) identified that there was an ascertained diminution in woods in The Ziama Forest Reserve in Guinea as a consequence of turning populations, which have moved off from â€Å" traditional † methods. IUCN study on Ziama states that â€Å" forest screen in this portion of Guinea is now merely 20 % of what it was ‘at beginning ‘ † and the study emphasizes that the wood is regressing quickly ( cited in Fairhead and Leach 1995:1029 ) . Therefore the diminution of woods reflects the populations who cleared it ( Fairhead and Leach 1994 ) . Furthermore Sambrook et Al ( 2004 ) did a survey of 450 traditional hillslope farms in the Dominican Republic, and found there was positive relationship between population force per unit area and deforestation. They found that for the full 1987 farm sample, â€Å" 52 % of the fluctuation in deforestation is explained by population force per unit areas † ( p36 ) . This consequence can besides been seen at the state degree, for illustration in Thailand deforestation was caused by demographic force per unit area from migration ( Livi-Bacci 2001 ) . Consequently, â€Å" population growing causes a disproportional negative impact on the environment † ( Ehrlich and Holdren 1971:1212 ) . There is a conventional wisdom that population growing is responsible for deforestation. This supports the neo-Malthusian position that population growing is the root cause of environmental debasement, and turning demands for finite resources. Therefore the solution is direct population control ( Panayotou 1996 ) . If population growing is a major menace to the environment so steps must be taken to cut down the rates of growing. Livi-Bacci ( 2001 ) argues that a diminution population addition will spread the issue of the environment. Therefore â€Å" there is an immediate demand to develop schemes aimed at commanding universe population growing † ( Sitarz 1993:44 ) . This means that there needs to be support for household planning throughout the universe particularly in developing states which have the highest rates of population growing, and less entree to household planning ( Barlett 1994 ) . Therefore, decelerating the addition in population, particularly in the face of lif ting demand for natural resources, can assist protect the environment. As population size ranges even higher degrees the environment is at hazard and the result is impossible to foretell, therefore policies to cut down population are needed ( Upadhyay and Robey 1999 ) . However, the following subdivision will counter this and argue population growing is non a menace and hence there is no demand for population controls. Population growing is non the cardinal issue for menaces to the environment There is agnosticism about whether population growing is the cardinal menace to the environment, as Monbiot ( 2008 online ) writes â€Å" is population truly our figure one environmental job? † Even though there is grounds of a correlativity between population growing and a lessening in environmental quality, a about perfect correlativity does non needfully connote causing. Otherwise, it would be expected that states with the highest population such as China and India would hold the highest usage of natural resources ( Panayotou 2000 ) . The world-wide mean per capita usage of forest resources is 0.75 hour angle, whereas in China, a state which about 20 % of the universe population uses less that mean forest resources with merely 0.11ha/capita ( Pimentel and Pimental1999 ) . Some jobs have been raised over the Malthusian position of population growing endangering the environment. The universe has coped with fast additions in population, even though Malthus predicted awful catastrophes. At the clip he wrote there were fewer than a billion people in universe but he felt the Earth ‘s bounds had past. The universe population has grown six times larger since 1798, but contrary to what Malthus predicted, nutrient production grew even higher ( Sen 1994 ) . Clearly, Malthus ( 1798, 1803 ) did non anticipate the technological progresss of the last two centuries as a consequence of the industrial and agricultural revolutions. Like other classical authors he assumed that land productiveness was fixed ( Panayotou 2000 ) . Boserup opposes Malthus ‘ theory reasoning that agricultural methods depend on population size ( Darity 1989 ) . Boserup ( 1965 ) theorised that population determined agricultural methods, hence the power of enterprise and new invention s would get the better of the power of demand. This means population growing would non go on to degrade the environment as communities would exchange to new and more intensive methods of the land. Thus population growing does non ensue in a debasement of the environment because populations will alter to another system with a higher carrying capacity. Therefore, â€Å" the issue is non the Numberss of people, but how those Numberss relate to available resources † ( Barlett 1994:9 ) . Technological alterations and better direction of resources would guarantee that a population can spread out the Earth ‘s capacity. It can be argued that population growing is in fact the drive force for efficiency and technological invention guaranting growing without damaging the environment ( Panayotou 1996 ) . For illustration an addition in agricultural outputs can countervail the consequence of population growing on deforestation as a 10 % addition in agricultural outputs from technolo gical alteration would ensue in a 1.1 % decrease in deforestation ( Panayotou 2000 ) . Therefore the effects of population growing can be reduced by modern engineering and increased efficiency ( Cropper and Griffiths 1994 ) . Consequently, an environmental crisis can be avoided if stairss are taken to conserve and pull off resources and demand sustainably ( Upadhyay and Robey 1999 ) . Therefore the natural environment and resources has ne'er been fixed but has expanded due to invention. The bounds to growing are non defined as they are connected to the effects of technological growing and cultural picks ( Livi-Bacci 2001 ) . This rejects Malthus ‘s statement as he assumed land productiveness was fixed, whereas Boserup ( 1965, 1976 ) argues that dearth is non possible as technological alterations would let nutrient production to maintain up with population growing. In add-on, more efficient and environmentally sound agricultural engineerings must be developed and put into patte rn to back up the continued productiveness of agribusiness ( Pimentel and Pimentel, 1996 ) . Meadows et Al ( 1972 ) and Ehrlich were incorrect to propose population growing would take to environmental debasement as it may ensue in preservation or an betterment of the natural environment. This position does non curtail the degrees of population but suggests it can actively better the environment. Tiffen and Mortimore ( 1994 ) argued against Malthusian positions and pointed out that population growing does non needfully endanger the environment as better direction and investing would guarantee the natural environment is protected. Agricultural labour demands increased non because of a larger sum of cropped land but because of larger labor demands, as Boserup suggests. They pointed out that an increasing population would increase entree to beginnings of cognition and utilizing engineerings. This enables outputs to lift faster than population growing. Like Tiffen and Mortimore, Murton ( 1999 ) besides argued against Malthusian statements. He used illustration in the Machakos ter ritory in Kenya which showed that environmental preservation occurred during periods of population addition. Therefore, population growing is an of import agencies of bettering environmental quality. Therefore, if resources are direction sustainably so population growing can protect the environment. He found population growing has a positive influence on woods as husbandmans became more dependent on non-agricultural beginnings of income. Therefore, Malthus is incorrect to propose there would be a calamity as population addition can hold a positive influence on woods. This is supported by Fox ( 1993 ) who did research on forest resources in a Nepali small town Bhogteni in 1980 and 1990 and found â€Å" despite an one-year population growing rate of 2.5 % , woods were found to be in much better status in 1990 than they were in 1980 † ( p89 ) . Thus population growing had a positive influence on forest resources. He found that Nepali husbandmans began to develop their ain method s for conserving the woods through community direction. This consequence in an addition of forest resources as in 1980 private woodlots had 179 trees/ha compared to 489 trees/ha in 1990. Therefore population growing does non needfully take to downward spiral of land debasement. Fairhead and Leach ( 1994 ) besides identified a counter-narrative for their grounds, as local occupants argued they had created the spots of forest around their small towns, non destroyed it. Oral history suggests that the small towns encouraged and managed the growing of forest islands around their small towns. Therefore, it is non needfully the instance that the country was originally forest prior to increase of the population. It is imaginable that direction of the local resources was partly responsible for the spread of forest countries, from earlier savanna-like conditions. They point out that more small towns really resulted in more forest islands. The Ziama part was originally au naturel stone non for est land. Therefore there is a broader narrative ( Fairhead and Leach 1995 ) . Therefore the incorrect readings were made based on stereotypes ( Fairhead and Leach 1994 ) . Conversely, unwritten history is non fact, or based on empirical grounds and ca n't use these local/village findings everyplace. Hence the cogency of these statements is questionable. While this rejects Malthusian statements, as population growing did non take to farther environmental debasement, it does non corroborate Boserup ‘s hypothesis that population growing would take to new inventions. Furthermore, population growing creates the inducement to protect the environment, as costs of bing resources addition and benefits from replacements are realised ( Panayotou 2000 ) . Therefore the rapid population growing in Bhogteni may hold resulted in an increased willingness of the small towns to seek better direction for forest lands. Thus woods would non hold been perceived as threatened if there was non a high population growing rate. Fox ( 1993 ) besides argues that other variables contributed to the direction of the forest in Bhogteni, such as an debut of a new route and alterations in forest term of office. Nevertheless, while population growing can trip land usage alterations it is non the root cause of environmental harm. The root cause consequences from market failures, particularly in developing states where belongings rights are neither defined nor implemented. Thus the private cost of deforestation is zero. Therefore, because they have no right of ownership to the la nd they have no inducement to protect it and do efficient land-use determinations ( Panayotou 2000 ) . We should acknowledge, nevertheless, that the immediate menace to these lands is non population growing but bad forest direction policies. Before population can be cited as the cause of forest debasement, forest policies must be implemented that provide inducements for local people to pull off forest resources ( Fox 1993 ) . It is frequently the decision that population thrusts deforestation, nevertheless, the context must be kept in head, such as unfastened entree forest resources, low degrees of instruction, insecurely held agricultural land. These all combined prevent response to population growing. Therefore a more complete analysis should look at all these factors. Furthermore, other issues besides affect the rate of deforestation. Holdren ( 1991 ) used a mathematical expression I = P x A x T to demo how population, richness and engineering have an impact on the environment. H e claimed that environmental policies should concentrate on ingestion instead than population growing. Population growing is a factor among other issues. While the Brundtland Report ( 1987 ) states that population growing is non the cardinal job. Furthermore, if a state has a higher income so the rate of deforestation is likely to be slower. As income rises, people use other energy beginnings and modern agricultural techniques which reduces the demand for agricultural land. Therefore cut downing the rates is population growing is non needfully the best method for diminishing the rate of deforestation ( Cropper and Griffiths 1994 ) . Therefore all of these factors are responsible for a impairment of the environment and all demand to be tackled. Therefore population is merely one factor among many, and the interactions of these factors are important for driving the deforestation procedure. Policies are needed to undertake poorness in developing states and high ingestion degrees in dev eloped states foremost ( Saxena and Nautiyal 1997 ) . However, it depends what degree is being surveies as micro surveies may happen important negative effects on resources from population force per unit areas on the local environment, while macro surveies identify no resource restraints at the national or planetary degree. This differentiation between ‘macro ‘ or aggregate, analysis and micro, or more disaggregated analysis is one that you could develop farther. One of the points that this leads to is inquiries of control of resources and the utilizations to which they are put. Macro-level and micro-level analysis may take to different penetrations and decisions in this respect. Micro studies-even though better analyse the consequence of population growing besides mask the wider socio-economic factors which may ensue in environmental debasement ( Murton 1997 ) . Therefore there are complications for following the consequence of universe population on the planetary environment ( Panayotou 2000 ) The engagement crises in population, resources, and environment ( Ehrlich and Holdren 1971 ) . â€Å" The Malthusian theory of population growing and resource debasement is clearly a myth that needs to be slain.p97 † ( Fox1993 ) . Decision From analyzing the grounds above it is clear that there is small understanding on the relationship between population and environment, there is a enormous fluctuation in findings and their reading. The selective usage of grounds gives rise to results that range from the most pessimistic to the most optimistic. The aim of this essay was to reexamine analytically and critically the statements on the population-environment interface. This essay has outlined Malthusian statements of population growing doing environmental debasement. This essay has besides explored counter-evidence to this, reasoning that invention and a better direction of resources can countervail the effects of population growing. This essay has besides argued that other factors affect are the cause of impairment in environmental quality. A more complete analysis should integrate these factors and their interaction with population growing. It is by and large agreed that population growing is an indirect menace to the environment. Therefore direct menaces need to be addressed. Issues such as poorness demand to be solved to better environmental quality, non cut downing population Numberss. However, whether grounds is used from macro or micro graduated tables can skew the consequences. To reason that much more empirical research, with more sophisticated theoretical accounts, is necessary before we can to the full understand the function of population kineticss ( denseness, growing, distribution and composing ) on deforestation. Java ‘s population quadrupled in the last 100years. However, environmental harm was due to economic grounds non population growing. Failure to better agricultural productiveness and to make non-agriculutral employment has intensified population force per unit areas. Panayotou ( 1996 ) .