Death of the Holocaust Essay Example

Demise of the Holocaust Essay The Holocaust was one of if not the most exceedingly awful case of decimation and mass homicide. The Nazis did one of the most frightful things believable by murdering such a significant number of individuals. Some the concentration camps could be viewed as the most noticeably terrible places on earth, much more dreadful then Hell. As one survivor put it, No one can comprehend what occurred here. The Nazi killing and death camps at Auschwitz, Bergen-Belsen, Treblinka, Berkinow, Chelmo, Sobibor, Belzec, and several others caused detainees to remain alert and in a consistent dread (The Nizkar Project). In these camps, more than 6,000,000 Jews were immediately slaughtered essentially in light of the fact that Hitler considered them to be mediocre compared to his Aryan race of Germans. Polands Jewish populace dropped from an energetic 3,350,000 to a minor 50,000 before the finish of the war, just to feature the most noticeably terrible model (twentieth Century History). Close by Gypsies, gay people, and a few Slavs, Jews were particularly focused as completely mediocre and were liable to gassing, executions, clinical investigations, and torment (The Nizkar Project). The passings of these detainees were completely awful. Some were shot from point clear one behind the close to spare slugs. The Germans later utilized cyanide gas to execute the detainees. This permitted the Germans to kill more individuals quicker to spare time and money.There was nothing blameless about the concentration camps. As should be obvious in the montage the collections of the detainees looked like skeletons with a slender layer of skin over their bones. The destinations nearly consume into your brain about how brutal and horrendous this demonstration was. The words Work Makes You Free embellished the doors to Auschwitz, the camp where the best number of Jews kicked the bucket (twentieth Century History). Tricked that in the event that they worked they could go free, Jews were constrained int o the work camps and into an existence of consistent dread, the steady danger of death, hard work, starvation, affliction, and brutality. Auschwitz was the most noticeably awful annihilation camp of the Holocaust murdering 1.1 million

Enron Corporation Assignment Example | Topics and Well Written Essays - 750 words

Enron Corporation - Assignment Example Its CEO Ken Lay was one of President George W. Bush’s close companions. Both Ken Lay and CFO Jeff Skilling and later Andrew Fastow were viewed as pioneers to copy. Shrewd, smooth and yearning, they were viewed as the encapsulation of corporate achievement. Be that as it may, a progression of occasions immediately reversed the situation on the fortunes of this billion dollar organization and its administration. Truth be told, even its examiners Arthur Andersen were viewed as at fault and expelled as uncouth, yet the aftermath of the whole fiasco made them close down their organizations all over the world. Looking back and because of examinations, it was resolved that there were various purposes for the ignominious fall and death of this once extraordinary undertaking. Despite the conspicuous reasons why the CEO, CFO and some different heads of business offices worked as one to give a profoundly bogus and deceiving picture to corporate America and people in general everywhere, i t appears that they definitely thought they were the sharpest folks in the room and could keep on tricking the majority with bogus ideas of progress. Was It a Question of Structure? The confusing certainty is that for what reason did it take such a long time for the realities to disentangle and reality to uncover itself. With an organization the size of Enron, and its business advantages spread everywhere throughout the world, it appears to be astonishing that the genuine situation was kept out of the eyes of representatives, what to state of the overall population. Did the detailing structure have something to do with it? Inspectors sifting through the records of the bombed company have seen that the size of the bookkeeping extortion was across the board and reverberated all through the vast majority of the enterprise. This included bogus and innovative detailing, misclassification of benefits and liabilities and other such controls. Truth be told directly from 1997 till its end, E nron top officials were worried about over-announcing benefits and incomes and downplaying liabilities and costs to introduce an erroneous image of progress to the world (Maclean and Elkind, 2003). So the entire structure was disintegrating and it was an instance of widespread and tricky defilement and distorting at practically all levels. The grid revealing structure, where one reports to an immediate boss just as a local head somewhere else is recommended as a decent double detailing instrument to forestall inconsistencies. Was it a Question of Exceeding One’s Scope of Authority? Another explanation that has been brought up as the reason for the destruction of Enron was that officials would in general surpass their cutoff points or limits of power. Indeed, Ken Lay has guaranteed that he here and there didn't know precisely what Skilling and Fastow were doing regarding coking up the books and introducing a bogus picture to financial specialists and the overall population. Ho wever, the reality remains that power and duty can't be isolated. Ken Lay as CEO must be held criminally at risk for the doings of his CFOs as it was he who guided them to get the outcomes that were appeared on the books. Along these lines, even this contention doesn't hold weight. Officials are answerable for their own activities and orders, regardless of what the levels of leadership. Was it a Question of Corporate Culture? Another reason or reason pointed for the breakdown of Enron was that it was because of the corporate culture of accomplishment that the officials had made throughout the years. Enron had earned a name for itself under Lay, and he needed to remain

Book Riots Deals of the Day for October 29th, 2019

Book Riot’s Deals of the Day for October 29th, 2019 Sponsored by Waterhouse Press These deals were active as of this writing, but may expire soon, so get them while they’re hot! Todays  Featured Deals The Troop  by Nick Cutter for $1.99. Get it here, or just click on the cover image below. The Walls Around Us  by Nova Ren Suma for $1.99. Get it here, or just click on the cover image below. A Head Full of Ghosts  by Paul Tremblay for $1.99. Get it here, or just click on the cover image below. The Secrets Between Us by Thrity Umrigar for $1.99. Get it here, or just click on the cover image below. In Case You Missed Yesterdays Most Popular Deals The Monsters: Mary Shelley and the Curse of Frankenstein  by Dorothy and Thomas Hoobler for $2.99. Get it here, or just click on the cover image below. See What I Have Done  by Sarah Schmidt for $1.99. Get it here, or just click on the cover image below. 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Facts About Saskatchewan, the Land of Living Skies

The prairie province of Saskatchewan produces more than half of the wheat grown in Canada. Saskatchewan is the birthplace of Canadian medicare and home of the RCMP training academy. Location of Saskatchewan Saskatchewan extends from the U.S. border along the 49th parallel to the Northwest Territories border along the 60th parallel. The province lies between Alberta on the west and Manitoba to the east, and between the Northwest Territories on the north and the states of Montana and North Dakota on the south See map of Saskatchewan Area of Saskatchewan 588,239.21 sq. km (227,120.43 sq. miles) (Statistics Canada, 2011 Census) Population of Saskatchewan 1,033,381 (Statistics Canada, 2011 Census) Capital of Saskatchewan Regina, Saskatchewan Date Saskatchewan Entered Confederation September 1, 1905 Government of Saskatchewan Saskatchewan Party Last Saskatchewan Provincial Election November 7, 2011 Premier of Saskatchewan Saskatchewan Premier Brad Wall Main Saskatchewan Industries Agriculture, services, mining

To Kill a Mockingbird Comparing the Book to the Movie

To Kill a Mocking Bird It is believed, that there are many pieces to the story of To Kill a Mocking Bird left out of the film version of the novel. I agree with this statement, and I am here today to show you four select scenes and/or characters that (in my opinion) were significant to the story. To Kill a Mocking Bird is a coming of age story for two young children, as well as a story that shows that people are not always what they seem to be. The scenes that I have chosen are very important role in supporting to these themes. The first scene that I believe should have not been left out of the movie is the scene where Miss Maudie’s house burns down. In this scene, Atticus wakes Scout and helps her put on her bathrobe and coat and goes outside with her and Jem. Miss Maudie’s house is on fire. The neighbors help her save her furniture, and the fire truck arrives in time to stop the fire from spreading to other houses, but Miss Maudie’s house burns to the ground. In the confusion, someo ne drapes a blanket over Scout. When Atticus later asks her about it, she has no idea who put it over her. Jem realizes that Boo Radley put it on her, and he reveals the whole story of the knothole, the presents, and the mended pants to Atticus. Atticus tells them to keep it to themselves, and Scout, realizing that Boo was just behind her, nearly throws up. I believe that this scene should have been put in the movie, because I feel as if the scene does a great job supporting the theme ofShow MoreRelatedComparing The Kill Of Mockingbird Book And Movie1829 Words   |  8 PagesComparison of The Kill of Mockingbird Book and Movie Many people assume that conversion of a novel into a film is an easy task, as they would argue that it is a matter of the lines in the books into dialogue in the movies (Baines 615). However, those who do the work to make it happen understand the challenge well. Some of the fans of movies at times have problems with an adaptation of the film depending on how they have read the book, and some of the elements that people are keen on including theRead MoreTo Kill a Mockingbird: Movie and Book Comparison Essay809 Words   |  4 PagesTo Kill a Mockingbird by Harper Lee is a beloved novel published in 1960. After reading the novel there were some moments and people that I found particularly enjoyable. My favorite part of the novel was when the children went to Boo Radleys house to try to get a look at him. In addition, Atticus Finch was my favorite character in the novel. In my opinion the book was very good. I felt that it really showed the thoughts and actions, both good and bad, of t he people in the South during the timeRead MoreThe Help Directed By Tate Taylor1740 Words   |  7 Pagesadapted. This movie is set during the civil rights movement of the 1960s in Jackson, Mississippi. This movie stars Skeeter Phelan (Emma Stone), a white women fresh out of college who is an aspiring writer. She teams up with Aibileen Clark (Viola Davis) and Minny Jackson (Octavia Spencer) to collect stories from the point of view of African-American maids, in an attempt to expose the hardships of being black and inflict change on their little town. Those who have read the book may judge the movie too quickly

Strategic Supply Chain Management - 2572 Words

1.0 Introduction Supply Chain Management (SCM) is the management and administration of a network of interconnected enterprises involved in the fundamental provision of product and service packages required by end customers. This complex discipline is the systematic and strategic coordination of traditional business functions and the tactics across those business functions within a particular company and across businesses within that company’s supply chain. The end effect is improving long term performance of the company, the companies within the supply chain, and the supply chain as a whole for competitive advantage. Keith Oliver, an analyst working for the consulting firm Booz Allen Hamilton, coined the term â€Å"Supply Chain Management† in†¦show more content†¦It plays a key role in the total SCM functions. At strategic level, purchasing plays a decisive role in decisions on and implementation of business boundaries. It acts as a link between the vendors and the company to g et involvement and help of vendors in matters like purchased material specification, matching of lot sizes and transportation packing. E. Selling is the closest link with the demand side of the supply chain. It is directly responsible to help customer know, select, buy, pay for, and take away company’s product. These products may be sold to the customers directly or through a distribution network. A sale plays an important part in decision on design of the distribution and is directly involved in its day to day operations. F. Manufacturing represents the core of internal operations of a company. No SCM policies can operate in isolation from the manufacturing activities. Manufacturing supports SCM in many ways like, reducing manufacturing lead times and supplying material closely matched to customer lot size and time requirements. G. Product design has significant impact on efficiency and effectiveness of both supply and demand side of supply chain. In addition the basic quality of the finished product sold to the end user can be improved substantially by better collaboration among channel partners. Supply Chain Management has matured from a compelling method of deriving competitive advantage, toShow MoreRelatedThe Strategic Management Of The Supply Chain2162 Words   |  9 Pages The strategic management of the supply chain does not consist of introducing innovations in order just to innovate. It is about creating a configuration that will make the strategic objectives progress. According to Slack et al. (2004, p.67) an  « operations strategy concerns the pattern of strategic choices and actions that set the purpose, objectives and activities of operations  ». According to Hayes (2005), efficient operations strategies need to be consistent and contribute to competitive advantageRead MoreSupply Chain Management : Strategic Management833 Words   |  4 PagesAll flows of information, products or funds generate costs within the supply chain. Efficient management of these flows is the key to success in the supply chain. Effective and efficient supply chain management involv es the management of supply chain assets and product, information, and fund flows to maximize total supply chain profitability. â€Å"Supply chain efficiency is related to whether a company’s processes are harnessing resources in the best way possible, whether those resources are financialRead MoreStrategic Sourcing Of A Supply Chain Management1271 Words   |  6 PagesResponsible Sourcing Before a supply chain manager can truly understand strategic sourcing, they must have a good working knowledge of the purchasing and procurement processes, which I will explain in detail later in my research. Strategic sourcing is an aspect of supply chain management that is becoming more prevalent in the business world. Without strategic sourcing a firm will not and cannot maximize the potential of its supply chain and altogether meet the company’s overall business goalsRead MoreStrategic Supply Chain Management And Logistics2199 Words   |  9 Pages International Academy Of New Zealand Strategic Supply Chain Management and Logistics Assignment 2 Author: Gurdev Singh E-mail: singhgurdev89@ymail.com Research Paper for Element 1 DB704 Strategic Supply Chain Management and Logistics Abstract Supply chain is an important part of all businesses that provide in the various sectors of a finishedRead MoreSupply Chain Management : Strategic Objectives2699 Words   |  11 Pagescollaborative supply networks [1] [10], in order to sustain competitive advantage [5] and responsiveness. Thus, Supply Chain Management is a critical concept for every organization in terms of adopted supply chain tactics and their impact on the organizational strategic objectives [5], an identified, by the existing literature fact. Wiengarten, Pagell and Fynes mention that nowadays ‘’ the competition is not between companies but between supply chains’’ [10]. One of the major and most popular supply chainRead MoreSupply Chain Management : Strategic And Operational Levels Essay2083 Words   |  9 PagesIntroduction: Supply chain management is composed of different elements that play a crucial role in the survival and success of a business. Supply chain management is a chain of elements that consists of customers, planning, purchasing, inventory, production and transportation which are managed through tactical, strategic and operational levels. Technology covers a major functional role in supply chain without which the activities and responsibilities of supply chain may not be achieved. The globalRead MorePrinciples And Strategic Elements Of Supply Chain Management1323 Words   |  6 PagesObjectives, principles and strategic elements of Supply Chain Management Supply Chain Management already exists for more than hundred years. It wasn’t defined as terminology for some period of time and it took years to develop it. It began with Fredrick Taylor’s â€Å"The Principles of Scientific Management† that was concentrated on improvement of manual loading processes all the way to Supply Chain Management we have now (Lamprecht, James; Page 180). Because Supply Chain Management spreading beyond locationRead MoreAn Analysis of Toyotas Strategic Procurement and Supply Chain Management4932 Words   |  20 PagesPurchasing Materials Management | | Strategic Procurement Supply Chain Management | Introduction The topic selected is (Strategic Procurement Supply Chain Management). For this study, we have selected Toyota Motor Corporations as our company of choice. Toyota is without doubt the best in the world, with its many philosophies and principles on how to make the best out of the least; JIT, lean production and elimination of waste and the desire for continuous improvement are just a fewRead MoreExamine the Strategic Importance of Supply Chain Management to a Manufacturing Firm. What Are the Major Types of Supply Chain Strategies Open to Such a Firm?1030 Words   |  5 PagesSCM is the management of a network of interconnected businesses (such as distributors, wholesalers and retailers) involved in the ultimate provision of product and service packages required by end customers. It spans all movement and storage of raw materials, work-in-process inventory, and finished goods from point of origin to point of consumption (supply chain). Principles of SCM are: - Internal integration of purchasing and supply, manufacturing and physical distribution management - ExternalRead MoreAn Analysis of Toyotas Strategic Procurement and Supply Chain Management4917 Words   |  20 PagesPurchasing Materials Management | | Strategic Procurement Supply Chain Management | Introduction The topic selected is (Strategic Procurement Supply Chain Management). For this study, we have selected Toyota Motor Corporations as our company of choice. Toyota is without doubt the best in the world, with its many philosophies and principles on how to make the best out of the least; JIT, lean production and elimination of waste and the desire for continuous improvement are just a few ways

A Birthday and Remember by Christina Rossetti, and My last Duchess by Robert Browning Essay Example For Students

A Birthday and Remember by Christina Rossetti, and My last Duchess by Robert Browning Essay I am studying three poems from the Romantic Movement anthology Love and Loss. They are A Birthday and Remember by Christina Rossetti, and My last Duchess by Robert Browning. The Romantic Movement was the start of a creative revolution. Romanticism is the term used to describe a movement in European literature, art and music. In England the movement was led poets such as Keats, Byron and Wordsworth. The principal theme of the movement was that reason and logic could not explain every thing. The Romantics listened to the individual conscience rather than the demands of society. They reacted against the intellectuals of the Classic period and against the rigidity of the social structures. Common themes found in the Romantic include Nature. You can find reference to nature in almost all Romantic poems. Some writers use it as a refuge; as a way to escape modern life and the social demands that are associated with it. Others involve nature in their poetry because they believed nature had healing powers, whilst some believed that nature was just a divine work of art from God. Another common theme of the Romantic Movement is the growing importance and interest in imagination. Romantics considered imagination as the ultimate tool for creating art. It was also another way of escaping reality. One poet who uses both themes in her work is Christina Rossetti. There are many references to nature, especially in her poem A birthday For example, there is a lexical field of fruit surrounding this poem apple-tree, pomegranates and grapes. Fruit is a very natural product, being wholesome and lifegiving. It suggests you can be reborn through the recycling of a life and Rossetti uses this because it is almost as if she will be reborn when her lover returns. Apples, pomegranates and grapes are all circular fruits, implying that their love is never ending and she will always love him. One of the poetic techniques used by Rossetti is her use figurative and literal images. Figurative images can be found in the mentioning the apple. Apples are often red (implying lust) and have a rough heart shape to them. This implies that she wants you to think of the heart. However, she also includes a literal image of the heart on every other, line in the first octet, My heart is like a singing bird. Another poetic technique used in this poem is word painting. The use of many vivid nouns which depict colour put a clear image into your head. Lexis like rainbow , purple dyes, gold and silver illustrate the poem. She uses phrases such as work it in gold and silver grapes, in leaves and silver fleur-de-lys. Not only do these words and phrases paint a clear and imaginative picture in your minds eye, but they also appeal to our senses. The Romantics were very sensuous and enjoyed using descriptive expressions. A birthday has many adjectives that describe sight, smell, touch, taste and the sound of her imagination. To appeal to our touch she uses words such as silk and down. These two materials have very different textures. The Romantics liked to touch and feel things because the Romantic Movement was based on sensing and experiencing. Words like singing bird gives us a sense of what kind of noise she is hearing. You generally sing when you are happy so it gives the poem a euphoric feel. The theme of fruit appeals to our taste buds, grapes, and apples. She mentions birds elsewhere in the poem, doves and peacocks. These repeated references to birds could imply tht she wants to be free and fly away from the inner turmoil that has been her mind since her lover went away. Doves and Peacocks juxtapose each other in relation to their symbolic meanings. Doves are generally thought of as a symbol for peace and love but Peacocks are showoffs and are thought to be a lot more exotic. This poem implies she is throwing a party and the fact she mentions the peacocks hundred eyes could mean that this relationship is very public and she will be in the spotlight with all eyes on her. Yet Messina EssayIn the two Rossetti poems we can see some similarities in the structure of the poem. Both are sonnets, however, Remember is fourteen lines and a birthday is sixteen lines. The structure of A Birthday is a lot more complicated than that of Remember A Birthdays structure being ABCB, which is almost like a song. B is the chorus, my love is come to me and A and C, the verses. They are very contrasting, A Birthday is full of similes telling us how happy she is by comparing herself to nature, my heart is like a singing bird. She structures it so we dont know why her heart is gladder than the most beautiful parts of nature, until the chorus (B). This intensifies the readers curiosity. The second verse (C), is full of imperatives and verbs, like raise me, hang it, carve it and work it, rather than similes. This makes it seem as though she is talking directly to the audience. It also gives the work an immediacy. Remember has a structure of ABC. The B section is four lines long. This is when the speaker starts to change their mind and contradict them selves. We know this by the use of the verb forget which is a total juxtaposition to the verb she has used previously three times, remember. Its as if she is having an argument in her head. By the last two lines of the poem she has come to the conclusion that its better to forget and smile than remember and be sad. The poem is called remember not Remember me. I think this is because at the beginning she wanted them to just remember her. We can tell this through her use of personal pronouns. Remember me when I am gone away, but by the end of the poem she telling him to remember the love they shared together. (Note: Amy, is this them or him? Perhaps its better to use the same each time Ive underlined either him or them, but not both of them?) In the poem Remember, Remember me is repeated three times being imperatives, she is telling her lover to remember her because she doestnt want to be forgotten. This has an impact on the reader because it is something we can all relate to. By the end, Rossetti has come to the conclusion that it is better by far that you should forget and smile than that you should remember and be sad. I think she included this because it gives the reader a sense of respect for her. The Romantics wanted you to gain something from reading their poems. Another poem with a surprising ending is La Belle Dame Sans Merci by John Keats. One of Keats techniques is to create a bubble in his poems. He often tries to portray a dreamlike quality with his use of fictional words and characters such as faery and elfin grot. He then bursts the bubble often (move to He then often bursts the bubble .) by telling the audience it was a vision or hallucination, I awoke and found myself here. This results in the audience not obtaining the sense of satisfaction and therefore not enjoying the ending. The beginning is so idealistic full beautiful that Keats maybe thought anything so unspoiled would never be able to last. He wants to take the reader out of reality to a happy place and then the shock of reality will be even more forceful. In this poem, as before in Christina Walshs poem, the woman is dominant over the man. At that time, women were tied down with chores but here the girl is liberated. At the time it was written, this would have caused a sense of unease in the reader, especially as the woman wasnt human, but a faery.

Star Wars Essays - Fictional Cyborgs, Galactic Empires,

Star Wars One of the most memorable moments for many students will occur when they see "Star Wars: The Phantom Menace," the first part of a prequel trilogy to the beloved Star Wars trilogy. The original three films Star Wars: A New Hope, The Empire Strikes Back, and Return of the Jedi have embedded themselves in our current culture. The Force, composer John William's famous soundtrack, and lines such as "Luke, I am your father"(which is never said in any of the movies) have become common in present day culture. But, the Star Wars trilogy also contains a deeper theme that is not unique to the current time period. In George Lucas's Star Wars Trilogy as well in Joseph Conrad's Heart of Darkness, the contrast between good and evil is conveyed through the optical, symbolic differences of black and white. The planet Hoth from The Empire Strikes Back and the Congo in Heart of Darkness are very symbolically similar. The Rebel Alliance has a base on the ice planet of Hoth. The Rebel Alliance stands for good as do the snow and ice that cover Hoth; hence, a society of good stationed on a good planet. But, the Galactic Empire, or pure evil, soon attacks and overtakes Hoth. This situation on Hoth is similar to the white assimilationist techniques used in the dark, African Congo. The white man, "evil", attempts to assimilate the Congo, or goodness. Thus, both Hoth and the Congo and their assimilations, however successful, typify the conquests of evil over good. The clothing of Luke Skywalker across the whole Star Wars Trilogy and of Marlow across his trek into the jungle symbolize man's journey of self-realization. In the very beginning of Star Wars, Luke wears a robe of white. For practical purposes the robe should be white because then it will reflect the most sunlight away on the planet of Tatooine; but the white color of the robe also stands for Luke's pure goodness at that point in time. But as time progresses, namely in the latter portion of The Empire Strikes Back and The Return of the Jedi, Luke begins to wear the garb of a Jedi-a black tunic and matching pants. These dark outfits symbolize the fact that Luke contains an element of evil within him that he can never destroy, namely that he is the son of Anakin Skywalker-the man who would become Darth Vader. In Heart of Darkness, once Marlow realizes that he was produced by an evil white society he throws away his dark, blood stained shoe. Casting off this dark article of clothing symbolizes Marlow's rejection of evil society. A change in the personalities of these two characters can be seen through the change in their clothing The characters of Darth Vader and Kurtz both symbolically represent the hidden good or evil in a person that is primarily evil or good. Darth Vader is evil. No doubt can be had that this is true; not only does he wear an black, mechanical suit which looks menacing, but he also has no qualms about killing other people, even his own family. However, a shred of decency does remain within Darth Vader as is seen in The Return of the Jedi. As Emperor Palpatine is destroying Luke Skywalker, Darth Vader attacks the emperor in order to save his son. Once the emperor, Darth Vader tells Luke to take off his black mask to reveal a pure, white face although this means his certain death. At this point, Darth Vader has reverted back into Anakin Skywalker and has revealed to his son that he really had good inside of him before he died. In Heart of Darkness, Kurtz is similar to Darth Vader. Kurtz's life has turned to evil. He exploits a group of people, similar to what the Empire does to its inhabitants. Not until the very end, when Marlow and the audience meet Kurtz and his ghostly white face doe Kurtz repent crying out, "The horror! The horror!"(p.123) These two men who had lived similar lives of naivet?, correspondingly end their lives with attempts to redeem themselves by realizing the folly of their former ways and make final, feeble tries at repenting. The people around them also realize that both have purity, however minute, within their souls. Two works of art separated not only by the passage of time, but also by the changing of society, use the contrast of black, no color, and white, all colors. These colors which can symbolize good and evil within the same work of

Bullying

Bullying Many victims of relational aggression have been reluctant to self-report. Educators have experienced a difficult time to recognize this aggression. Bullying has been known for a long time to be a situation in which one boy threatens to beat another. Research has considered it to be a relational aggression. President Obama has been a victim of bullying as he mentioned in a White House Conference. Girls have also been reported to be using a hurtful language and social exclusion.Advertising We will write a custom essay sample on Bullying specifically for you for only $16.05 $11/page Learn More Bullying takes various forms like gossip, manipulation and abuse. These forms may be observed in the day to day activities. Gossip, manipulation and social isolation may be overlooked by most adults who have not realized that it is the common form of bullying. Research has found out that most children at their middle of social hierarchy at school are most likely to become bullies. A report by a sociology professor shows that those on the top of the pecking order are too secure to be involved in bullying. These bullies use aggression as a means for maintaining their social status in the social hierarchy. After reaching at the top of the hierarchy, they no longer need to be aggressive. Teachers may not be aware of students who have the potential of becoming bullies. It only surprises them to learn that some students who appear to be innocent are bullies. Cyber bullying is the latest wave of relational aggression. One person may send messages about another person to many people, who can then send rumors about the victim within the shortest time possible. Educators have been put in a tough spot on finding that, it is unclear on what they can do about off-campus speech other than banning the students from practicing the bullying. The school administrators should be involved in stopping this type of bullying within the school. One of the complications is that parents do not support the school’s efforts in controlling the bullying in the schools. The bullies have been supported by their parents who claim that their children are not bullies, but bright and innocent. They don’t believe that they have the potential of becoming bullies. This resistance has been one of the obstacles to eliminating the cyber bullying in the schools. The federal and the state governments have tried as much as possible to partner with other districts to support the schools in stopping this bullying. This came into force during the conference at the Washington held by President Obama. Challenge Day has focused on building schools where every child feels safe, loved and celebrated. Clubs have been used to build and strengthen relationships aimed to stop bullying and social isolation. Such activities include, playing games and having discussions where different people get opportunities to share experiences in a very peaceful way.Advertising Looking for essay on education? Let's see if we can help you! Get your first paper with 15% OFF Learn More They therefore get a chance to have fun and do other activities. Oprah Winfrey Show has always been involved in many programs that provide a forum where children discuss various issues affecting them in the society. They are then guided on how to handle the issues. Schools and districts have been involved in the Challenge Day activities where children are advised on how to handle negative behaviors that may be faced in the society. If all the students, parents and teachers collaborate with other stakeholders in these efforts, bullying can be stopped in schools.

Crimes such as employee theft of merchandise or customer or customer Term Paper

Crimes such as employee theft of merchandise or customer or customer theft (shoplifting) - Term Paper Example Theft of merchandize by employees accounts for approximately $50 billion losses on yearly basis, with small retail shops being the most affected (Hollinger, 2013). However, large business enterprises also suffer great losses but compared to small enterprises, they have a higher capacity to absorb the losses hence can stay longer in business to unearth such theft. Small retailers have no such capacity and hence, regular theft ends up ruining the business completely. It is estimated that more than 75% of employees in the US engage in this atrocity, in one form or the other, hence indicating that there is strong need to reevaluate strategies being used by businesses to curb this type of crime (Walsh, 2000). This paper is a critical evaluation on employee theft as a major dilemma in business. Employees are an important resource for a business, whether in production, marketing, supply or even in retail business. This is due to the fact that they provide services that cannot be performed by any other mechanism in exchange for remuneration among other financial and nonmonetary gains. As an employer, the most important goal is to maximize profits and in businesses that entail buying and selling, profits can only be obtained by ensuring that every item leaving the stores is fully paid for and if not, it has to be accounted for. However, statistics indicate that this is not usually the case. Numerous products are being stolen by employees, who are entrusted with the responsibility of maintaining and managing businesses. 75% of employees in the US are stealing from their employers, not just once but repeatedly). No wonder cumulative losses can reach up to more than USD 50 billion on yearly basis (Walsh, 2000). With this trend, it is most likely that more and more businesses wil l continue to collapse and this can only be hurting, not only for business owners but also the global economy as a result of

Rene Descartes and the scientific revolution Research Paper

Rene Descartes and the scientific revolution - Research Paper Example The Bible taught that the Earth was a special planet because God has deliberately set it at the center of the others; a clear sign of its importance to God. However, past the 16th Century, some scientists began challenging the existing way of thinking by replacing the past assumptions with new theories. This change in the European thought about the natural world is what is commonly referred to as the Scientific Revolution. The Scientific Revolution was a foundation stone upon which Rene Descartes developed the scientific method approach. The breakthroughs in the scientific revolution were championed by Copernicus who observed that the stars and all the planets revolved around the sun. The thoughts were sparked off by an ancient Greek idea that the sun was at the center of the universe. Copernicus indeed found this to be true after 25 years of studying planetary movements. Though revolutionary, the theory had a limitation in that it never explained why the planets behaved the way they did. Another problem was that it contradicted ancient studies and religious views. For fear of persecution and possible ridicule, the scholar did not publish his findings until 1543; the year of his death. Despite his death, Copernicus’ ideals withstood the test of death and were a good foundation for other like-minded scientists. Brahe, an astronomer from Denmark, made careful and accurate records of the planets’ movements over many years. The scientist produced volumes of accurate data recorded from his personal observations. With his death imminent, it was left to his followers to make the mathematical inferences from the data. Johannes Kepler, his assistant, studied the data and inferred that some mathematical laws governed the movements in the universe. According to Hellyer, (2003) Descartes’ findings disapproved the belief that the planets orbited in circular motions. In contrast,

The drug metabolism

The drug metabolism Introduction: If an exogenous microorganism enters the human body, this invokes the immune system to produce antibodies to come into contact with the foreign potentially pathogenic species and lead to its destruction. Although when drug molecules enter the human body this does not result in the synthesis of antibodies, due to their relatively small molecular weight. This is why the endogenous metabolism of drugs is vital in ensuring no or the minimum toxicity from a very broad spectrum of xenobiotics i.e. molecules/compounds which are found in a given organism, but are not synthesized naturally by it and or normally found within it. We can define drug metabolism as the enzymatically catalysed conversion of exogenous drug molecules into generally less active metabolites, which have a faster rate of clearance from the body. (While this is true for the majority of metabolites it is important to acknowledge that some metabolites actually are of higher toxicity than their precursors.) This occurs throu ghout nearly every organ (excluding ectodermal tissue) in the human body, but specifically the gastro-intestinal tract, lungs, kidneys and most importantly (and abundantly) the liver. While drug metabolism is essential in preventing a specific toxicity being produced from the accumulation of a drug(s), there are drawbacks that need to be addressed; a given drug may be a xenobiotic, but it is taken (or administered) in order to produce some degree of a therapeutic effect for its specifically targeted disease/pathology. Thus drug metabolism can inhibit the therapeutic benefit of a given molecule that ideally needs to be retained in a particular tissue of the body for a set period of time, to bring about a therapeutic effect. This is mainly due to the fact that a large number of drug molecules do mimic the structure of endogenous molecules close enough for the corresponding specific enzymes to target them as well as nonspecific enzymes which only identify certain molecular groups as opposed to the entire pharmacophore of a given drug. This unexpected drug metabolism could result in an undesired decrease in the bioavailability of a drug which would lead to increased d oses or dosage frequencies; this would cause a decrease in patient compliance which in the current medicinal environment is vital. Absorption and clearance: In the case of drug absorption into the desired tissues of the body generally a lipophilic character is required. This is because regardless of the site of drug uptake, it must pass through the cell membranes of targeted cells. These cell membranes are lipophilic in nature as they consist of a phospholipid bilayer. The inside of this bilayer is made up of hydrocarbon tails which are straight chain hydrocarbons which interact with each other via Van der Waal interactions and London forces. Thus drug molecules are designed to have sufficient lipophilic character that they can form these interactions with the lipid bilayers and pass into cells. Unfortunately this means that they are of limited hydrophilicity and either do not go into dissolution in an aqueous environment at all or do so at a very slow rate. As previously mentioned as this is unacceptable due to the accumulation of a given drug that would occur and produce toxicity, the drug must undergo a series of transformations that serve to increase the hydrophilic nature of the drug molecules. This predominately occurs in liver cells (hepatocytes) in processes known as phase I and phase II metabolism. Phase I and Phase II: Phase I metabolism is constituted of oxidative, reductive and hydrolytic reactions. These serve to produce primary metabolites that are susceptible to other reactions, which consist of the following conjugations; glucuronic acid, sulphate, amino acid, glutathione, water, acetyl, fatty acid and methyl. These occur via the corresponding conjugating agents and are known as phase II reactions. They aim to produce secondary metabolites that are far more hydrophilic nature than their precursor drug counterparts. This is with the addition of e.g. amine, carboxylic acid, hydroxyl groups as well as others, simply to increase the number of very electronegative atoms (with lone pairs of electrons) in a given species. Thus these metabolites can from a greater number of hydrogen bonds with the aqueous medium of the nephronal filtrate of the kidneys and be excreted at a faster rate via the passing of urine. The main constituent of phase I transformations are oxidative reactions, as they activate the selected species in generally one of two ways; hydroxylation and epoxidation. We can define oxidation as the gain of oxygen in a molecule or more precisely the loss of at least one electron from a species reacting with molecular oxygen. This is true for the two general mechanisms mentioned above as adding either a hydroxyl group or an epoxide ring to a molecule increases the number of oxygen atoms that the molecule contains. Firstly this increases the ability of the newly formed metabolite to act as a nucleophile due to the lone pair of electrons available for covalent bond formation (from the oxygen atom added to the molecule). Secondly it increases the chances of attack by an electrophilic species, because of the high electron density of the lone pair of electrons on the oxygen atom. Oxidation Properties and mechanisms of the Cytochrome P450 isoenzyme superfamily: The majority of these oxidative metabolic reactions are carried out by a superfamily of enzymes known as cytochrome P450, this can be displayed as: RH + O2 +NAD(P)H + H+ ? ROH + H2O + NAD(P)+ [1] The P450 enzymes catalyse the biodegradation of other exogenous species that are not drugs such as; organic solvents, ethanol (or consumed alcohol), anaesthetics, pesticides and carcinogens [1]; While endogenous molecules such as organic acids, steroids and prostaglandins are also biodegraded [1]. These enzymes are intracellular hemoproteins that function as external monooxygenases (mixed function oxidases) enzymes that serve to incorporate a single atom of molecular oxygen into a lipophilic xenobiotic substrate (i.e. a drug molecule), with the concomitant reduction of the other atom to water [1]. While internal monooxygenases take two reductive equivalents from the substrate in order to reduce one atom of molecular oxygen to water, this is normally done with an external reductant for external monooxygenases [1]. In eukaryotic cells the P450 enzymes consist of around half a thousand amino acid that compose their quaternary structure, these hemoproteins are membrane bound and have a heme prosthetic group at their centres. It is thought that the reason the enzymes can be bound to the cell membranes is the N-terminus of the enzymes tertiary structure has numerous hydrophobic amino acids (i.e. ones which contain aromatic/cyclic groups and have few very electronegative atoms such as oxygen and sulphur) that can interact with the lipid bilayer of the cells. Most hemoproteins in mammalian cells have nitrogen atom from the histidine residues imidazole group to form a ligand with the iron-heme prosthetic group. While for P450 enzymes this ligand is formed between the prosthetic group and the thiol group of a cysteine residue which is located near the C-terminus of the protein. This ligand activates the porphyrin ring (four conjugated pyrrole rings) to nucleophilic substitution by an oxygen atom. This is because the thiol group has an electron inductive effect due to its high electronegativity and so makes the carbon atom it is directly bonded to very electropositive and thus of greater electrophilicity/susceptibility of nucleophilic attack by the lone pair of electrons from the oxygen atom, so allowing oxidation to take place. The general process of the catalytic oxidative cycle of the cytochrome P450 enzyme superfamily: The substrate binds to a specific P450 enzyme and is followed by the first electron of the coenzyme NADPH via the electron transport chain. This is then followed by the binding of an oxygen atom that accepts the second electron from the coenzyme to produce a ferric peroxy anion [1]. The anion forms a ferric hydroperoxy complex via protonation, which in turn is heterolytically cleaved to form a Fe(V)=O species [1]. The newly formed highly electrophilic iron-oxo intermediate then attacks the substrate to form a hydroxylated metabolite. This product disassociates to allow another substrate to bind and the oxidation cycle to continue [1]. Schematic organisation of different cytochrome P450 systems. Upper row, left: bacterial system, right: mitochondrial system. Lower row, left: microsomal system, right: self-sufficient CYP102 (P450-BM3).[1] Aromatic hydroxylation: This leads on to the first major constituent of oxidative reactions; aromatic hydroxylation. This is simply the addition of at least one hydroxyl group to a given substrate although depending on the chemical environment that the product is formed in (e.g. pH) the hydrogen atom may be lost from the hydroxyl group. Aromatic compounds are first metabolized to the corresponding arene oxides; this is by electrophilic addition of the aromatic ring (of the previously mentioned iron-oxo intermediate) to produce either a carbocation species. This carbocation would be formed via the movement of an electron to the Fe(IV) species, giving a Fe(III) species bound to a the mentioned carbocation; or by formation of a radical which serves as a tetrahedral intermediate. The produced arene oxides then take on further transformations, which involve removal of the epoxide group that was added and introduction of a hydroxyl group and potentially another nucleophilic substitute. The simplest transformation is simply intramolecular rearrangement to for a para-arenol. Also hydration can take place in the presence of water and using the enzyme epoxide hydrolase. This causes opening of the epoxide ring and formation of a trans-3,4 arenediol. These primary metabolites can also undergo attack by large macromolecules which serve as nucleophiles. This is because the oxygen in the epoxide ring serves to make both the meta and para carbon positions electropositive and electrophilic in nature. Although any nucleophilic substitution that does go on to occur is at the para position, due to greater resonance stability of the formed secondary metabolite. Another example of aromatic hydroxylation would be the metabolism of isoliquiritigenin. It is a chalcone found in licorice roots and other plants [3] which has shown potent antitumor, phytoestrogenic activity and antioxidant properties. [3] Schematics for its metabolism can be shown below. [3] The metabolism of aromatic compounds that get hydroxylated can be slowed by using para-substituted aromatic compounds with either chlorine or a fluorine atom in the para position. While electron withdrawing groups deactivate the ring towards electrophilic substitution and activate it towards nucleophilic substitution; electron donating groups activate the ring towards electrophilic substitution and deactivate it towards nucleophilic substitution. While most ring deactivators go in the meta position, halogens direct ortho-para, i.e. the same as ring activators. This is because the halogens, especially fluorine and chlorine are very electronegative and thus have an electron inductive effect and decrease the electron density of the ring. This inductivity is far greater than the resonance stability that the halogen can give the ring thus deactivating it. Thus the addition of these halogen atoms decreases the nucleophilic nature of the ring and decreases the rate of metabolism. This can b e shown with the metabolism of the drug Diclofenac (shown below [4]) which is an anti-inflammatory drug as it is has a half-life of around one hour. While its derivative fenclofenac which has a para-substituted chlorine atom has a half-life twenty times longer. Alkene epoxidation: Epoxidation of alkenes occurs readily, because they are more volatile than the ? bonds of aromatic compounds, this simply involves the addition of an epoxide ring to a molecule in order for it to then undergo further transformations. For example the drug Coumarin has been used clinically at high dosages in humans in the treatment of high-protein lymphedemas (Jamal and Casley-Smith, 1989) and as an antineoplastic agent in the treatment of renal cell carcinoma (Marshall et al., 1994) and malignant melanoma (Marshall et al., 1989). [5] It and its 3/7-hydroxy isomers undergo epoxidation and then either glutathione conjugation or non-enzymatic intramolecular rearrangement [5] to secondary metabolites. This is shown schematically below. [5] It is also vitally important that environmental carcinogens are broken down via drug metabolism, in particular by the P450 enzymes. For example acrylonitrile (AN2) is widely used in the production of acrylic and modacrylic fibres, plastics, rubbers, resins, and as a chemical intermediate in the synthesis of many other industrial products (IARC,1999). Early epidemiological studies have suggested that AN may increase the incidence of lung, colon, and stomach cancers among exposed workers (Thiess and Fleig, 1978; Blair et al., 1998).[6] As a result P450 epoxidation is vital for preventing carcinogenic action of AN. While the metabolic basis of the acute toxicity of AN has not been fully elucidated, it is generally attributed to its metabolism to CEO (cyanoethylene oxide) and cyanide, and glutathione depletion. The primary target of acute toxicity of AN is the central nervous system due, at least partially, to the liberation of cyanide (Ahmed and Patel, 1981; Benz et al., 1997). [6] The below diagram illustrates how AN is metabolised by the P450 enzymes, specifically the CYP2E1 isoform.[6] Alcohol and aldehyde metabolism: Alcohols and aldehydes can be metabolized by cytochrome P450 enzymes to aldehydes and carboxylic acids respectively, but the majority of these transformations are catalysed by alcohol dehydrogenase and aldehyde dehydrogenase. These enzymes are predominantly in the liver and require the coenzyme NAD+ or NADP+. General equations for these reactions are shown below. [Alcohol Dehydrogenase]Ez + RCH2OH + NAD + RCHO + NADH + H+ [Aldehyde Dehydrogenase]Ez + RCHO + NAD+ + H2O RCOOH + NADH + H+ Reduction: Cytochrome P450 enzymes are used along with reductases to metabolise drugs that have a carbon atom that is able to be reduced such as a carbonyl or an unsaturated carbon, a nitro group or a compound with an azo group. In addition upon reaction usually a specific stereoisomer is formed. The structure of the rest of the compounds often attribute to which stereoisomer is formed. Some stereoisomers can prove to be toxic. Carbonyl compounds: Carbonyl compounds are reduced by cytochrome P450 into alcohols and are NADP or NADPH dependent. The enzymes involved in the reduction of carbonyls are classified based upon their gene sequence, 3-D structure and cofactor dependence into superfamilies of; medium-chain dehydrogenases/reductases, aldo-keto reductases, short-chain dehydrogenases/reductases which include carbonyl reductases. The majority of these enzymes are present in the cytosol however there are some that are found in the microsomes and mitochondria. Short-chain dehydrogenases/reductases (SDRs) and aldo-keto reductases (AKR) are the most common enzymes used in drug metabolism. These enzymes also exhibit high specificity for the drugs that they reduce. Saturated ketones reduced to alcohols whilst in an unsaturated ketone both the ketone group and the double bonds are both reduced. Steroidal drugs undergo oxidoreduction of the hydroxy/keto group at C17[7]. This makes the compound more water soluble and hence easier to be excreted. Some metabolising enzymes behave differently and undergo different types of reactions when in different cells. An example is carbonyl reductases within tumour cells and normal cells. These have become a target of new drugs such as oracin in the treatment of breast cancer [9]. The enzymes within the cancer cells metabolise oracin and doxorubin more effectively than in normal cells hence reducing the efficacy of the cytostatic effect of the drugs. Some carbonyl compounds however do not undergo reduction via the cytochrome P450 pathway but are rather reduced by other pathways including the aldo-keto reductases (AKR). An example is a drug containing a 1,3-diketone derivative S-1360 which upon reduction produces a key metabolite HP1 which constitutes a major clearance pathway[9]. Nitrogen compounds: The reduction of nitrogen containing compounds are reduced to amines in order to aid excretion as amines are more water soluble than their nitro groups. Azo compounds on the other hand may be metabolised within the body to produce the active drug as opposed to the precursor which may be formulated to get pass the first pass effect or the hydrophilic barrier in order to enter their target cells. The azo group provides 2 compounds with amine groups which can be further metabolised like any other amine. Both of these functional groups are both reduced by cytochrome P450 enzymes and are NADPH dependent. Hydrolysis: This is part of the Phase I metabolism pathway. The metabolites produced are all susceptible to Phase II conjugation and thus being excreted after the conjugation. The functional groups of the drugs that are metabolised by hydrolysis include esters and amides, which produce carboxylic acids, alcohols and amines. Esters are hydrolysed quicker than amides in vivo. Unlike oxidation and reduction the reactions are typically not carried out by the cytochrome P450 system. The most significant enzymes involved in the hydrolysis of the esters and amides are carboxylesterases and arylesterases, cholinesterases and serine endopeptidases. The active site of the enzymes involved may be stereospecific as to which enantiomer of the drug is metabolised and in addition which enantiomer of the drug is generated. Some of these products are toxic and dangerous to the body. Amino acid reactions Several phase I reactions produce a carboxylic acid metabolite. Xenobiotic carboxylic acids can be metabolised before elimination by amino acid conjugation. Glycine; the most common conjugating amino acid forms ionic conjugates that are water soluble with aromatic, arylaliphatic and heterocyclic carboxylic acids. In these reactions, first the xenobiotic carboxylic acid is activated by ATP to form the AMP ester by the enzyme acyl synthetase. Then the AMP ester is converted to a Coenzyme-A thioester. Next, an amide or peptide bond is formed between the thioester and the amino group of glycine. The latter reaction is mediated by the enzyme acyl transferase. These reactions are shown in figure 1. The amino acid conjugate produced is ionic and therefore water soluble, hence it is easily eliminated in the urine and bile. (1) Glutathione conjugation Glutathione is a protective compound in the body that removes potentially toxic electrophilic compounds and xenobiotics. Drugs are metabolised by phase I reactions to form strong elecrophiles that can react with glutathione to form conjugates that are not toxic. This phase II reaction differs from others since electrophiles are subject to conjugations rather than nucleophiles. The nucleophilic thiol group on the glutathione compound (figure 2) attacks elecrophiles (electrophilic carbons with leaving groups). Compounds that can be conjugated to give thioether conjugates of glutathione: Epoxides Haloalkanes Nitroalkanes Alkenes Aromatic halo- and nitro- compounds Glutathione-S-transferases (GST) are enzymes which catalyse the reactions above. There are thirteen different human GST subunits which have been identified and they belong to five different classes. They are located in the cytosol of the liver, kidney and gut. The enzyme GST is thought to increase the ionisation of the thiol group of glutathione, leading to an increase in its nucleophilicity towards electrophiles. (1)(2) Once formed, GSH conjugates may be excreted directly or more often they are further metabolised to N-acetylcysteine conjugates which can then be excreted via phase III metabolism. Phase III Metabolism further modification and excretion Before being excreted in the urine, most xenobiotics are made less toxic and more water soluble as polarity increases by metabolising enzymes in phase II reactions. In phase III metabolism water soluble compounds are excreted in the urine. However, some drug compounds are not metabolised and therefore are not excreted. These non-metabolised compounds are readily reabsorbed from the urine through the renal tubular membranes and into the plasma to be recirculated. (3) Some xenobiotic conjugates from phase II reactions are further metabolised during phase III metabolism reactions. Glutathione-S conjugates may be metabolised further by hydrolysis of the glutathione conjugate (GSR) at the y-glutamyl bond of the glutamate residues by y -glutamyl transferase (y -GT) followed by hydrolysis of glycine residues resulting in a cysteine conjugate containing a free amino group of the cysteine residue. This then undergoes N-acetylation to form mercapturic acid. The final products; mercapturic acids are S-derivatives of N-acetylcysteine synthesised from glutathione (figure 4). (1)(2) First-pass Metabolism The metabolism of many drugs is dependent on the route of administation therefore orally administered drugs are subject to first pass metabolism and consequently their bioavailablity is reduced. This occurs as a result of the orally administered drugs entering the systemic circulation via the hepatic portal vein, so the drug is exposed to the intestinal wall and the liver, which is thought to be the main site of first-pass metabolism of orally administered drugs. Other possible sites are the gastrointestinal tract, blood, vascular endothelium and lungs. First-pass Metabolism in the Liver During first-pass metabolism, the cytochrome P450 enzymes family represent the most significant of the hepatic enzymes. It has been estimated that the endoplasmic reticulum of the liver contains approximately 25 000 nmol of cytochrome P450. Although there are several human P450 subfamilies and multiple individual isozymes within subfamilies, only five P450 enzymes are shown to be significant for the process of first-pass metabolism: CYP1A2 CYP2C9 CYP2C19 CYP2D6 CYP3A4 Cytochrome P450 drug substrates are commonly highly extracted during first-pass metabolism. Examples of these drugs are; morphine, verapamil, propranolol, midazolam, lidocaine. Drugs that are highly extracted such as lidocaine have a low bioavailability when taken orally therefore they are not administered orally. CYP3A4 is the most commonly active isozyme against P450 drug substrates. This is possibly due to the enzymes abundance and broad substrate specificity. Highly extracted substrates for conjugative, reductive or non-P450 oxidative enzymes are less common. These include labetalol, morphine, terbutaline, isoproterenol and pentoxifylline. The gut is also an important organ involved in pre-systemic metabolism. Metabolism here for drugs with high first-pass metabolism leads to a reduced bioavailability. Some metabolizing enzymes such as CYP3A4 is found at a higher level in enterocytes than in the liver. Recent findings state that gut wall metabolism is the major cause of low bioavailability of certain drugs. Intestinal First-pass Metabolism Various drug metabolizing enzymes found in the liver are also found within the epithelium of the gastrointestinal tract. These include cytochromes P450, glucuronosyl transferases, sulfotransferases, N-acetyl transferase, glutathione S-transferases, esterases, epoxide hydrolase and alcohol dehydrogenase. The small intestine contains high amounts of three cytochrome P450 enzymes; CYP3A, CYP2D6 and CYP2C. Unlike the liver which has a relatively uniform distribution of P450enzymes, the distribution of P450 enzymes is not uniform along the small intestine and villi. Proximal mucosal P450 content is normally higher than distal mucosa P450 content. Therefore it has been established that protein level and catalytic activity of drug-metabolizing enzymes in the small intestine are generally lower than those in the liver. This has been demonstrated by comparison of cytochrome P450 enzymes in the liver and the small intestine. The extent of first-pass metabolism can result from interindividual variability: Genetic variation Induction or inhibition of metabolic enzymes Food increases liver blood flow. This can increase the bioavailablity of some drugs by increasing the amount of drug presented to the liver to an amount that is above the threshold for complete hepatic extraction Drugs that increase liver blood flow (similar effects to food) and drugs that reduce liver blood flow Non- linear first pass kinetics, i.e. dose Liver disease increases the bioavailability of some drugs with extensive first-pass metabolism (4) To avoid first pass metabolism a drug can be administered sublingual and buccal routes. These routes lead to drugs being absorbed by the oral mucosa. During sublingual administration the drug is put under the tongue where it dissolves in salivary secretions. An example of a sublingual drug is nitroglycerine. During buccal administration the drug is positioned between the teeth and the mucous membrane of the cheek. Both of these routes avoid destruction by the GI fluids and first pass effect of the liver. Drugs may also be administered via other routes to avoid first-pass metabolism, for example; rectal, inhalation, transdermal, intravenous. (5) Prodrugs Many drugs require metabolic activation in order to exert their pharmacological action; these are described as pro-drugs. There are two types; type I and type II which has subtypes A and B dependent on the site of activation. Type I prodrugs are converted intracellularly at the target cells (A) or at tissues that usually metabolise compounds (B). An example of a type IA prodrug is Zidovudine and type IB prodrug is captopril. Metabolic activation of type I prodrugs is usually linked to phase I metabolic enzymes. Type II prodrugs are converted extracellularly in GI fluids (A) or in the systemic circulation (B). An example of a type IIA prodrug is sulfasalazine and type IIB prodrug is fosphenytoin. Type II prodrugs are very popular as they are involved in overcoming bioavailability problems, which are commonly experienced with many drugs, by improving permeability and reducing the first pass effect. (6) Type I Prodrugs are used to target a drug to its specific site of action; an example of this is the drug used in Parkinsons disease levodopa; the inactive form of the drug which is metabolised in the neurone by the enzyme dopa decarboxylase to the active form; dopamine. Dopamine does not cross the blood-brain barrier so it is given as the levodopa precursor which is lipophilic so it can cross the barrier and then metabolized in vivo to dopamine. (7) Another example of the use of prodrugs is the pharmacological activation of a type II prodrug Azathioprine to mercaptopurine which is a chemotherapeutic agent used in the treatment of leukaemia. When mercaptopurine is administered, its clinical usefulness is restricted because of its rapid biotransformation by xanthine oxidase to an inactive metabolite 6-thiouric acid. Therefore larger doses have to be given as it has a low bioavailability, this leads to toxicity. By administering mercaptopurine as its cysteine conjugate, the limitations can be overcome. This ionic form of the pro-drug conjugate is selectively taken up by the renal organic anion transport system. The kidney B-lyase enzyme system then cleaves the prodrug conjugate to give the active mercaptopurine in the kidney (figure 5). (8)(9) To conclude, prodrugs can be metabolised in different ways to form the active drug. They can be used to target specific sites, improve absorption and improve oral delivery of poorly water-soluble drugs. They can also be used to avoid first pass metabolism in drugs with high first pass extraction and reduce toxicity. (6) Factors affecting metabolism There are several factors that can affect drug metabolism. Age, sex, inducers and inhibitors are some of which can effect drug metabolism which are mentioned below. How does age affect drug metabolism: There are many physiological changes that occur with ageing. The changes have the potential to affect both drug disposition and metabolism. Drug metabolism is mainly functioned by the liver, its size, blood perfusion and synthetic capacity for proteins which all determine the rate of hepatic drug elimination[5]. Paediatric population Phase one and phase two metabolic pathways may not be active at birth due to maturational changes. The paediatric population and elderly population have differences in their capacity to metabolise a drug which can therefore produce a lower or higher plasma concentration of active substances compared with adults depending on the enzyme system used. There are examples of metabolites produced by therapeutic agents in children that are not usually seen in adults. The metabolites produced maybe the reason for some of the efficacy and or toxicity visible with drug administration in children. An example is: caffeine production in a neonate receiving Theophylline. Other therapeutic agents which show changes in metabolite production in children are; Valproic acid, paracetamol, Chloramphenicol, Cimetidine Salicylamide. In most cases the differences that occur between children and adults are in the ratios of the metabolites relative to the parent drug rather than in new metabolites individual to the paediatric population with some exceptions. The paediatric population shows the same set of enzymes as the adult population. (1) In general age related changes in drug metabolism have been shown to occur due to a consequence of diminished enzyme activities within the elderly human liver due to the size of the liver decreasing and hepatic blood flow decreasing. With age the liver blood flow is generally reduced by about 20-30% and there is a decrease in liver size by about (17-36%). Currently there is no clear pattern; however there are two general trends that influence the rate of metabolism. One trend is that drugs that are undergoing hepatic microsomal oxidation are more likely to be metabolised slowly in the elderly and those which are conjugated are not likely to be influence by the age factor. Secondly, drugs that have high hepatic clearance, extraction ratios example-Chlormethiazole, and Labetalol and undergo extensive first pass metabolism whilst oral absorption may show a large increase in bioavailability in the elderly. Elderly population In general in the elderly population hepatic blood flow decreases up to 40% and there can be a considerable reduction in the amount of drug reaching the liver per unit. Studies have shown that the effect of ageing on liver enzymes with particular drug

Anne Bradstreet as First American Feminist Essay -- Anne Bradstreet Fe

Anne Bradstreet as First American Feminist Feminism today remains prominent because even while women’s rights are very strong, women are still fighting for equality every day. In the time of Anne Bradstreet, women had few rights and they were seen as inferior to men. Anne lived among the puritans whom ruled her everyday life. Although it was against the puritan code for women to receive an education, Bradstreet’s father, Thomas Dudley, loved his daughter dearly and made sure that she was well educated which shows in her works. Anne Bradstreet’s literature became well known only because her family published her works under a male name. This was done because writing poetry was a serious offense to the puritans since poetry was considered creative and the only creating that was done was by God. In the works of Anne Bradstreet, she conveys a feminist attitude, and could very well be one of the first American Feminists. Bradstreet was very religious, and the religion she faithfully followed was very male dominant. Perhaps this is why Bradstreet never had a strong voice. Surely if she were to have voiced her opinions loudly and strongly she would have suffered dire consequences. Anne Hutchinson was banished because she publicly voiced her objections to the code of puritan lifestyle and beliefs. Living in a harsh puritan society most likely intimidated Bradstreet, so instead, she carefully weaved her early feminist thought into her poems and stories so that they weren’t too apparent. For example, in †The Prologue,† Bradstreet conveys knowledge of recognizing the kind of patriarchy she lives in, in the fifth and sixth stanza. I am obnoxious to each carping tongue/ Who says my hand a needle better fits,/ A p... ...sband, mothered eight children, risking death from each pregnancy, and managed to live sixty years. She was the first woman in American Literature to have her work published and also one of the first American women to begin thinking as a femenist. Even though Bradstreet was not a prominent, public femenist, she realized that she had to start somewhere and due to her living in the strict patriarchal puritan society, she did what she could. Although Bradstreet was very religious and held her spirituality very close to her, she still put together early femenist thought and can be considered one of the first American femnists. Works Cited History of Women in the United States. 9 November 2005. Wikipedia, the Free Encyclopedia Online. 15 November 2005 . Woodlief, Ann. Biography of Anne Bradstreet. Virginia Commonwealth University. 14 November 2005 . Anne Bradstreet as First American Feminist Essay -- Anne Bradstreet Fe Anne Bradstreet as First American Feminist Feminism today remains prominent because even while women’s rights are very strong, women are still fighting for equality every day. In the time of Anne Bradstreet, women had few rights and they were seen as inferior to men. Anne lived among the puritans whom ruled her everyday life. Although it was against the puritan code for women to receive an education, Bradstreet’s father, Thomas Dudley, loved his daughter dearly and made sure that she was well educated which shows in her works. Anne Bradstreet’s literature became well known only because her family published her works under a male name. This was done because writing poetry was a serious offense to the puritans since poetry was considered creative and the only creating that was done was by God. In the works of Anne Bradstreet, she conveys a feminist attitude, and could very well be one of the first American Feminists. Bradstreet was very religious, and the religion she faithfully followed was very male dominant. Perhaps this is why Bradstreet never had a strong voice. Surely if she were to have voiced her opinions loudly and strongly she would have suffered dire consequences. Anne Hutchinson was banished because she publicly voiced her objections to the code of puritan lifestyle and beliefs. Living in a harsh puritan society most likely intimidated Bradstreet, so instead, she carefully weaved her early feminist thought into her poems and stories so that they weren’t too apparent. For example, in †The Prologue,† Bradstreet conveys knowledge of recognizing the kind of patriarchy she lives in, in the fifth and sixth stanza. I am obnoxious to each carping tongue/ Who says my hand a needle better fits,/ A p... ...sband, mothered eight children, risking death from each pregnancy, and managed to live sixty years. She was the first woman in American Literature to have her work published and also one of the first American women to begin thinking as a femenist. Even though Bradstreet was not a prominent, public femenist, she realized that she had to start somewhere and due to her living in the strict patriarchal puritan society, she did what she could. Although Bradstreet was very religious and held her spirituality very close to her, she still put together early femenist thought and can be considered one of the first American femnists. Works Cited History of Women in the United States. 9 November 2005. Wikipedia, the Free Encyclopedia Online. 15 November 2005 . Woodlief, Ann. Biography of Anne Bradstreet. Virginia Commonwealth University. 14 November 2005 .

A Misconception Punishment of Oedipus King of Thebes

In many plays a character could have a misconception of his or her world. In return this could destroy a major turning point in the story. â€Å"Oedipus Rex† by Sophocles is one of such story. At the end of the story Oedipus King of Thebes ends up banished forever from his kingdom. Additionally, Oedipus physically puts out his own eyes, for several reasons which will be discussed later. The question is: Did Oedipus deserve his punishments? There are many factors that must be considered in answering this, including how Oedipus himself felt about this situation. His blinding was as much symbolic as it was physical pain. After all factors have been considered, I think that only Oedipus’ banishment was the necessary punishment. It is important to keep in mind the whole basic reasoning for Oedipus' search for Laios' killers: he wished to put an end to a deadly plague, and that plague would only be stopped when said murderer is killed, or driven from the land (Sophocles 723). Consequently, when it is revealed that Oedipus himself murdered Laios, then banishment seems to be the only option. Death, in my mind, is not valid simply because of what it might do to the kingdom's people. Even though it seems that Oedipus has not been a particularly good monarch, in fact his only major accomplishment seems to be killing the Sphinx all those years ago; having a king put to death could have serious repercussions on the rest of the kingdom. So in the end, the only way to cure the affliction and keep the kingdom stable seems to be the banishment of Oedipus. In this case, the question of whether or not he deserved to be punished seems irrelevant; Oedipus' only goal was to stop the problem and by leaving, he has accomplished that goal. Banishment was the only choice. But what exactly was Oedipus being punished for? Even after re- reading the play, this still seems to be a gray area. Incest? Immoral to be sure, but Oedipus was obviously ignorant to his actions, and to my knowledge in Sophoclean times, there was no written law against it and therefore no punishment for it (â€Å"The Three Goddesses†4). Oedipus' punishment may have been for killing Laios, but how could you punish someone for being a victim of fate? Greeks believed at the time of the play's writing that a man's life was â€Å"woven† by the 3 fates (Clotho, Lachesis, and Atropos) and that he was irrevocably bound to that destiny (â€Å"The Three Goddesses† 2) . Knowing this and knowing that Oedipus became king of Thebes only because it was his destiny to murder Laios and kill the Sphinx, how could he rightfully be punished? Even Oedipus himself knows that his actions are not by choice, but by acts of the gods, he mentions this twice in the play: â€Å"Some savage power has brought this down upon my head† (745). As well as â€Å"My god, my god — what have you planned to do to me? † (755) Such quotes clearly show that Oedipus knew that he had no choice in his actions. With this approach alone, Oedipus is undeserving of any set punishments. Oedipus may not have been a particularly good man, but in the end he knew what was best for his kingdom: â€Å"Out of this kingdom cast me with all speed† (757) †¦ or only that would save his problems. Was that Oedipus' only punishment the play might have been quite a bit simpler, but Oedipus vigorously stabs his own eyes with Jocasta's dress pins. This was Oedipus' way of trying to punish himself, as well as an escape for him. Oedipus would no longer stare upon the faces of his issues, his brother (uncle? ) Kreon or even those of his children. He is plunged into a world of darkness. It must be noted that this was more than a simply punishment, though I'm sure that it was one of the ways Oedipus intended it. The physical pain alone seems to prove that. There are much easier ways of becoming blind to the world than stabbing one's eyes out. As I have stated before, Oedipus was blinded by his foolish pride long before the beginning of the story. He only realized the truth behind Laios' murder when it was right in front of his nose. He was by no means stupid, in fact he came off as quite a clever man, but his was a world of blindness because of pride and power. After concentrating on the two most obvious of Oedipus' punishments, but there is another one that may not seem so clear. Keeping in mind that Sophocles made it very clear that Oedipus was a man of so much pride that he may have thought of himself to be related to a god. However Oedipus basically stripped of that pride at the end of the play, then the true punishment was revealed. Oedipus' life was based on pride. It was what led him to the murder of Laios, which in turn led to the killing of the Sphinx, then led to his becoming king. As he continues on his particular way of life, Oedipus becomes more and more powerful, and as such, his pride also increases proportionately. He threatens both Teiresias and Kreon, and tries to untangle the mystery of Laios' death. What must go on inside his min d when he finds out that not only did he murder his father, the king, but he also slept with his mother? Knowing full well that his kingdom would eventually find out his acts, how could he hold his head up when walking through the city streets? How could his people respect and look up to a king who was a murderer and an incest committer? Oedipus is therefore stripped of his pride, the driving force behind his whole personality. He has been crushed, and that which he had so much of before has been denied him. Where he was once at one extreme, he is now at the other. To take away the very thing that drives a man is worse than any physical pain or even death itself. That is truly, as Sophocles intended it, Oedipus' ultimate punishment. When the curtain falls and the lights go out on Oedipus Rex, the king's punishments total three. Though in my mind at least, one far outweighs the other two, they are all important and they all contribute to the total experience of the Greek tragedy. In the end, I do not feel that Oedipus truly deserves the punishments he is handed, but that is only because of the fact that I place myself in the time period that this was written in, using the beliefs of that time for my own. If this story took place in modern times, Oedipus certainly would have deserved his punishment, but this idea is irrelevant because, quite simply, this did not take place in our â€Å"advanced† civilization. Oedipus was a victim of fate, incapable of free will, and as such he should have not been punished, save banishment only to cure the affliction.

Public Health Is The Wellbeing Of The General Public

Public health is the wellbeing of the general public. Public health is everything from health promotion to injury and disease prevention for the betterment of the entire population not just the select few. The government at federal, state, and local levels generally monitors public health and set rules and regulations. They have to regulate research to ensure that it is ethical and legal because over the last hundred years many unethical experiments and trails have been done on at risk populations such as the Tuskegee Syphilis study. In The Immortal Life of Henrietta Lacks, Henrietta is a poor African American woman raised on a tobacco farm in the south. She died of malignant cervical cancer that gave rise to one of the most famous cell†¦show more content†¦Henrietta had a biopsy done of her cervical cancer when she went to the Johns Hopkins Hospital, one of the few facilities that would treat African Americans at that time. The doctor, Dr. TeLinde, took two samples, one can cerous and one normal to compare the two. His colleague Dr. Gey was a recognized tissue culture researcher who asked for samples of cervical cancer to study, one of the samples randomly given was Henrietta’s. She was treated for her cancer but it wasn’t enough, and the cancer eventually spread through her body and she died. Her cells, that Dr. Gey was given, showed the amazing ability to regenerate her telomeres, sequences of repeating DNA that are shortened each time a cell divides acting as a biological clock. Her cells appeared to be immortal and were easily grown again and again in laboratory conditions in vitro. He gave some of these cells to many other researchers because he saw their usefulness in their respective fields. Anything from how viruses replicate to what a drug does to them would benefit from HeLa cells. Biotech companies made a HeLa (the given name of the cells, Henrietta Lacks) factory to mass produce these cells for profit. They began shipping the cells to anyone that wanted to purchase them: other researchers, drug companies and even cosmetic companies that could test them on human cells versus animals. This was a major advancement for the community and