Air Transport Essay Example

Air Transport Essay Air transport is increasingly used to export types of fruits and vegetables to countries where they cannot be grown or are out of season. Some people say it is a good thing, but other people think it cant be justified. Discuss both views and give your own opinion. The speed of this world is changing rapidly. In the past, people do not have capability to eat the exotic fruits and vegetables and greenhouse food. But now, the flights solve this problem. This phenomenon leads to some controversies between the supports and opponents. I will analysis both and give my arguments.Obviously, with the development of air transport, it helps people have more opportunities to taste a variety of fruits and vegetables from all parts of world. This action brings convenience which diversified people’s dinner tables. In addition, import and export can stimulate the local and foreigner commodities’ circulation and development, and bring some tax revenue to both countries. However, some peo ple believe that this practice has some disadvantages. First of all, transport those food need the preservation technology which can keep the food fresh.But some preservatives contain some negative chemical stuff that have a detrimental influence upon humans’ physical health. Furthermore, some animals and plants are not harmful but when they penetrated in the export food and traveled by air transport, and then arrived their destinations, those creatures would invade new environments which do not have natural enemies to control their population. As a result, the domestic environments would be damaged. That is biological invasion. I personally think that exporting the exotic fruits or greenhouse vegetables to another countries is reasonable.But we need to consider another element, the domestic quarantine service should regulate all food bring from abroad(overseas) strictly, it is not only measuring the chemical preservatives in the food, but also eliminating the invade creature s to protect the local environments. In conclusion, I think we need to reinforce the regulate on the imported goods rather the reject them. In fact, that can benefit the people’s need and protect the environment and promote the circulation of commodities.

Free Essays on How Would You Contribute In Your Counrty As An Engineer

The rain drops on the windshield wake me up. I sit up and look out the window. Water currents taking along garbage and gasoline rainbows, the cars looking for another way to get by, and the small zinc houses along the road vanish as the current passes by. Everything in its path disappears as it gains speed down hill until the current makes it’s last stop, the lake. And as if the currents were not strong enough to tear down, mudslides accompany. The day keeps on getting worst to sort out as just another ordinary rainy day in Nicaragua. We all watch as this calamity gets out of hands, but we all think to ourselves, whose hands has it gotten out of, Where are our so-called artists of the practical, our engineers to manage these kind of catastrophic situations. We suffer from a dire economy which is an excuse to this situation but not to this cataclysm that could be manageable. I’m looking out the window and daydream about that moment when I will make a step towards the good of my country. The moment when I as an engineer will be able to contribute to avoid such situations. I vision a Nicaragua that could be and not the one that I live in. A vision of a Nicaragua that is much developed and made use of it’s resources, a well-built sewage canal and a uncontaminated Lake that is very well enhanced, a Nicaragua in where I will make a difference.... Free Essays on How Would You Contribute In Your Counrty As An Engineer Free Essays on How Would You Contribute In Your Counrty As An Engineer The rain drops on the windshield wake me up. I sit up and look out the window. Water currents taking along garbage and gasoline rainbows, the cars looking for another way to get by, and the small zinc houses along the road vanish as the current passes by. Everything in its path disappears as it gains speed down hill until the current makes it’s last stop, the lake. And as if the currents were not strong enough to tear down, mudslides accompany. The day keeps on getting worst to sort out as just another ordinary rainy day in Nicaragua. We all watch as this calamity gets out of hands, but we all think to ourselves, whose hands has it gotten out of, Where are our so-called artists of the practical, our engineers to manage these kind of catastrophic situations. We suffer from a dire economy which is an excuse to this situation but not to this cataclysm that could be manageable. I’m looking out the window and daydream about that moment when I will make a step towards the good of my country. The moment when I as an engineer will be able to contribute to avoid such situations. I vision a Nicaragua that could be and not the one that I live in. A vision of a Nicaragua that is much developed and made use of it’s resources, a well-built sewage canal and a uncontaminated Lake that is very well enhanced, a Nicaragua in where I will make a difference....

Looking at the world from today's perspective, what do you consider to Essay

Looking at the world from today's perspective, what do you consider to be the TWO biggest problems (political, economic, socia - Essay Example These changes mostly influence individual lives and relation with each other. The two primary problems in the world today are religious conflicts and globalization. The survival of the world remains at stake if Christians and Muslims cannot make peace (Sisk 21). Difference in religious values surely threatens survival of people in the world today. Moreover, where religious values clash with political ideologies, bloodshed can arise. This makes religious conflict a global problem today. Globalization, on the other hand, involves interconnection of countries’ political, religious, economic and social policies in a global setting. It requires that no country operates on its own, and ensures sharing of ideologies in an international framework. This is detrimental to political and individual’s survival since it erodes political and social cultures plus providing no security on territories. This paper analyzes these two problems; globalization and religious conflicts, explain ing why they are global problems. Moreover, the paper describes historical roots of these problems, and how they impact the world people live in today. The discussion appears below. To begin with, religious conflict is a significant problem in the world today. ... In a recent letter by Islamic scholars to the Pope, they state that the world cannot be at peace if Muslims and Christian are not at peace. For this reason, these scholars state similarities in the two religions by quoting the Bible and Quran, identifying instances which require love of one’s neighbor and the need to worship one God in both cases. This transcends the need for conflict between these two religions, describing peace as a primary requirement for coexistence. The historical roots of this problem dates back to many years back. The idea of conflicting religious values happens to be a significant problem in the world today. Biblical history identifies differences in these issues from a long time. The Islam and Christians religious differences have their roots in early times. The conflict between Judaism and Islam involves religious groups and dates back to more than 3000 years. This conflict exists in the Christian and Jewish Old testament and other records. History s ays that the conflict between these two groups has its roots from the religious differences between Judaism and Islam. The Arab-Israel war also dates back to such times. The idea behind this war is differences in ideologies between Israel and Arab countries on religious issues. The weaponry nature of these countries facilitates the war, and leads to loss of much lives. Though appearing to be a political war, this war has its causes on differences in religious values between the two countries. However, the idea of worship is synonymous in both cases, which makes the situation complex (Chirico 61). Arab countries advocate for justice, and believe that death sentences for atonement of sins

Father Teilhard de Chardin, a Jesuit priest Research Paper

Father Teilhard de Chardin, a Jesuit priest - Research Paper Example Religion too opposes science, for example, by offering opposing explanations for occurrence. Despite this widely held view that science and religion oppose each other, there are scholars who believe that overall, science and religion have had a positive relationship between them(Sweet and Feist 2). According to this school of thought, the two complement each other. Promoters of this viewpoint claim that religion has made several contributions to science. They also point to the fact that, throughout history, several religious people have been involved in scientific research. One such person is Father Pierre Teilhard de Chardin, a Jesuit priest. Many scholars regard Teilhard as a pioneer of integrating science and faith within the Catholic Church. This paper examines Teilhard’s thoughts and contribution toward getting the Catholic Church to embrace science. Pierre Teilhard de Chardin was a French Jesuit priest who also doubled up as a scientist(Delio 155). As a paleontologist, T eilhard took part in the discovery of the â€Å"Peking Man†. They also had the concept of the â€Å"Omega Point†, the highest degree of complexity and awareness they believed the universes was evolving toward. The Catholic Church censored many of Teilhard’s writing primarily because of their views on the original sin. Today, Teilhard’s paleontological work is widely accepted among scientists. However, their theorizing on evolution is disparaged. Fr. Teilhard died in 1955 at the age of seventy-four years. Teilhard was among the very few leaders of thought to successfully marry pure scientific research with a religious calling. Teilhard believed that there was a need to reconstruct the doctrines of the Catholic Church from the viewpoints of science while at the same time, rebuilding science from the perspectives of science(Delio 157). In other words, they believed that the two spheres complemented each other.

Power and Jurisdictional Authority Essay Example | Topics and Well Written Essays - 500 words

Power and Jurisdictional Authority - Essay Example A ‘motion to reconsider’ may be filed with the existing court of record (in Nevada†¦there does not exist an Appellate or Intermediate Court) but, assuming the complaint that a litigant offers to the court post-trial (judicial finding) is new, as in â€Å"overlooked†, and part of the original ‘court record’, a ‘motion to reconsider is allowed in post-trial brief or ‘compelling new evidence’ with respect to a motion. If the company that I am litigating against conducts any business across state lines the potential to file the case in the 9th Federal District Court may be in order. This filing with the 9th District is allowable if the business in question conducts its particular business affairs beyond state boundaries. This ‘Interstate Business’ may be deemed as ‘Federal’ using the Commerce Act (Commerce Clause/Sherman Act) (U.S. vs Lopez) or any other associated â€Å"Interstate† activity. Federa l Magistrate Court (the first level of federal appeal) would not be an allowable Court for appeal because the sum of the amount being litigated-$1,000,000- is more than the ceiling price amount allowable by law for a Magistrate Court ($10,000.00). The 9th Federal District Court would be the proper venue of choice (if the case is considered federal) for this complaint. The â€Å"nature† of diversity jurisdiction is much more complicated than the cross-border civil matter implies (two people from different states in a car wreck). Diversity jurisdiction, according to Federal Rules of Civil Procedure, insists that a Federal Court may be the venue of choice legally of this case; but not because two people from different states are involved. the Federal venue is limited with respect to State Laws of the competing states. A federal court might ‘house’ the proceedings but the federal rulings cannot extend beyond the parameters of the two state’s laws according to diversity

Transplant Rejection: Causes, Types and Prevention

Transplant Rejection: Causes, Types and Prevention Through this project I have researched transplants of organs, cells and tissues, Transplant rejection, the Human Immune System and the role of antibodies. Transplatation is the process where healthy cells, tissue or organs are moved from one site to another. There are different types of transplants and many problems that can occur with transplantation. The largest threat to a successful organ transplant is the Human Immune System, because it rejects the transplant. The role of the human immunity system is to protect the body from harmful, infecting agents. It destroys the transplant recognizing it as foreign and a potential treat to the body. This is known as Transplant Rejection. There are many different types of Transplant Rejection, each with there own diagnosis methods and symptoms. There are different ways of prevention and treatment, including tissue typing to determine the most appropriate donor-recipient match and using Immunosuppressant drugs that suppress the immune system of the recipient. There are two kinds of immunity in a human. The bodys first line of defence is the Innate Immunity and the specific response to the invaders is the Adaptive Immunity. Many white blood cells form the main components of the immune system and they identify and destroy invading agents. There are also different types of immune responses including the Humoral immune response. Antibodies, Y-shaped proteins, form part of the Humoral response. The structure of all antibodies are very similar, except for a small unique region at the ends of the two arms of the Y used for recognising agents. Antibodies can destroy the foreign material or help destroy them by tagging it for attack by other parts of the immune system. Antibodies are very important in transplant rejection, because they form part of the mechanism that rejects the organ or tissue and are one of the most important cells of the Human Immunity System. They help lead to Transplant Rejection and the destruction of the transplanted organ or tissue. INDEX (Jump to): Introduction Hypothesis Transplants Types of Transplants Problems With Transplantation Transplant Rejection Types of Transplant Rejection Diagnosis and Symptoms Prevention and Treatment Potential Further Studies The Human Immune System and Antibodies Types of Immune Responses Conclusion Bibliography Referencing INTRODUCTION: The role of the Human Immunity System is to protect the body from harmful, infecting agents. This protection is very important to keep our bodies healthy and functioning at the best it can, but this protection is also the largest problem in organ and tissue transplants. Transplantation has replaced many people damaged organs with healthy organs and is used to cure many tissue and cell diseases. The Human Immunity System is the largest threat to successful organ and tissue transplants, but why does the Human Immunity reject the transplanted organ or tissue? And is it possible that transplant rejection can be prevented? The body is constantly under attack from harmful substances that can cause damage and destruction to the human body, but we are protected. The human immunity system is bodys natural defence mechanism. What causes an immune response? And how does the immune system respond to foreign materials? Antibodies are an important part in the human immunity system. They can recognize, neutralize and destroy harmful materials, but what exact role does an antibody play in human immunity? Where and why are antibodies produced? Through this project I will explore transplants, transplant rejection, human immunity and the role of antibodies and finally prove or contradict my hypothesis. HYPOTHESIS: Antibodies do not play a role in the rejection of a transplanted organ or tissue. Transplants Transplatation is the action of healthy cells, tissue or organs that are transplanted (grafted) from one site to another. A transplanted organ can replace a recipients damaged, malfunctioning or absent organ and grafting of cells and tissue can also cure many diseases. A kidney (most common), heart, lungs, pancreas, liver, skin, cornea, blood, blood vessels, bone marrow, stem cells, cord blood, intestine, stomach, testis, thymus, bones, tendons, heart valves and veins, hand, Islets of Langerhans and ovaries can now be transplanted. The transplanted organ or tissue is commonly known as a graft. While the lack of organs for transplantation remains an obstacle, the biggest challenge for transplantation is the immune system. It destroys a transplanted graft recognizing it as foreign and a potential treat to the body. [2][7][9][11][12][13][14][15][16][17][18][19][20][21][22] Types of Transplants Autografts: Grafts of tissue from one area of the body to another part e.g. Skin transplants, vein extractions, etc. Autografts are not foreign tissue and therefore there is no immune reaction. Allografts: Grafts between members of the same species. Most organ transplants are allografts. Because of genetic differences between the organ and the recipient, the recipients immune system will identify the organ as foreign and attempts to destroy it, causing transplant rejection. Isografts: Forms part of allografts and are grafts between genetically identical individuals. Isografts do not trigger an immune response. Xenografts/ Xenotransplantation: Grafts between members of different species. E.g. the use of organs from other animals, like chimpanzees, baboon and pigs. In Xenografts there is a large risk of rejection and diseases carried in the tissue. [2][7][9][19][20][22] Problems with Transplantation Graft/transplant rejection: The immune system, recognizing the transplanted graft as foreign, will cause a rejection of the graft. Graft-versus-host disease (GVHD): T-cells, in the graft from the donor, identify the tissues of the recipient as a foreign antigen and mounts an immune attack against them. This is prevented by removing all T-cells in the graft before transplantation. In rare cases the donated organ may be infected and transmit an agent to the recipient. E.g. TB, rabies, syphilis, hepatitis B, HIV and many other diseases. To prevent this, potential donors are tested for these infections before the transplantation. [2][12][19] Transplant Rejection Transplant rejection is also know as Graft Rejection and organ or tissue rejection. Transplant Rejection occurs when a transplanted organ or tissue is not accepted by the body of the recipient, because the immune system of the recipient attacks and tries to destroy the transplanted organ or tissue. The body identifies the graft as foreign material and therefore triggers a rejection. This is expected because the Human Immunity Systems purpose is to protect the body by identifying and destroying foreign material that are potentially harmful. These harmful substances have proteins called antigens on their surfaces, when the immune system identifies these antigens as foreign, it will start to attack them. The degree and type of response varies according to the type of transplant and the organ or tissue being transplanted. Certain sites in the body are immune privileged, which means they are protected from attack, because immune cells and antibodies do not reach them. The anterior chamber of the eye, the testes and the brain are all immune privileged. Using the patients own tissue for autografts or tissue from an identical twin, isografts, when available prevents transplant rejection as the recipient sees the transplant as self, not as foreign and therefore does not mount an attack. Using a relative (sibling) as a donor is also recommended, because they may have inherited some of the same histocompatibility antigens and therefore the immune response may not be as strong. [2][3][4][7][8][11][12][23] Types of Transplant Rejection: Hyperacute Rejection Hyperacute Rejection is a rare humoral complement-mediated response in recipients with pre-existing antibodies to the donor. This reaction occurs immediately after the transplantation. No treatment is available for it and the graft must be removed quickly to prevent a severe systemic inflammatory response or death. Acute Rejection Acute rejection usually begins one week after the transplant, but it can occur months to years after transplantation. The new organ will be incapable of working at full efficiency. A single episode of acute rejection is not dangerous, if it recognized and treated it rarely leads to organ failure. Acute rejection occurs to some degree in all transplants and is caused by mismatched HLA. The Immune system will recognize the graft as foreign and will mount an attack against it. Acute rejection is a form of Cell-mediated response. Humeroral Rejection Humeroral Rejection is mediated by antibody and complement Immunity. It can occur immediately or during the first week after the transplantation. The antibodies are preformed antibodies or anti-donor antibodies that have developed after transplant. Chronic Rejection Chronic Rejection is the rejection against a graft due to chronic inflammatory and immune response. This rejection occurs over time (sometimes years after the transplant) and may occur from repeated episodes of acute rejection or for other causes not understood. Chronic Rejection is rare and is both antibody cell-mediated immune responses. Chronic rejection is irreversible and there is no successful treatment. Eventually the donor organ is lost, leading to re-transplant or death. [3][7][8][23] Diagnosis and Symptoms Diagnosis of transplant rejection relies on clinical data, including signs and symptoms, lab testing and a tissue biopsy to confirm that the graft has been rejected. The biopsy is interpreted by a pathologist who notes changes in the tissue that suggest rejection. E.g. presence of T-cells and other cell types that may be helpful in diagnosing the type of rejection and any evidence of structural injury or injury to blood vessels in the transplanted tissue. The symptoms of transplant rejection vary depending on the organ or tissue transplanted, but general symptoms include the organ not functioning properly, general discomfort, uneasiness or ill feeling, pain or swelling in the location of organ (rare) and fever (rare). [1][23] Prevention Treatment Tissue Typing Transplant rejection can be reduced through serotyping (tissue typing or crossmatching) before the transplantation to identify the antigens it contains and to determine the most appropriate donor-recipient match. ABO blood typing or HLA (Tissue antigen) typing is performed to ensure that the organ or tissue is as similar as possible to the tissues of the recipient. The antigens responsible for rejection of tissues are called histocompatibility antigens. These antigens are encoded by genes on chromosome 6, called the Major Histocompatibility Complex (MHC). The MHC is called the Human Leukocyte Antigen (HLA) system in humans. HLA are present on all cells of the body. Each individual has a unique combination of HLA and matching as many histocompatibility antigens will minimize the size and speed of rejection. MHC molecules present antigens to the T-cells of the immune system. When a foreign material enters a body cell, the MHC molecules inside the body cell bind to the antigen and transport it to the body cells surface. The antigen can now be recognized by a T-cell. Immunosuppressant Drugs Immunosuppressant drugs can treat and prevent transplant rejection. The drugs suppress the immune system of the recipient and are usually necessary for all transplants to prevent the graft from being rejected. The drugs should be used for the rest of the transplant recipients life. Most immunosuppressive drugs have the disadvantage of being non-specific and they result in suppression of the entire immune responses and therefore placing the recipient at a higher risk of infections. It is needed to develop more specific immunosuppressive drugs that will suppress only the responses that attack the graft, without dangerous side effects. Drugs like azathioprine (Imuran), methotrexate, cyclophosphamide, prednisone, belatacept, corticosteroids, cyclosporine A, tacrolimus, prednisolone, mycophennolate mofetil, antithymocyte globulin (ATG) and rapamycin are routinely used in different combinations for a safe level of immunosuppression. Side effects of immunosuppression drugs include infections, as the immune system is vital to protect us from infectious agents (bacteria, viruses, fungi, etc). Usually the infections can be controlled by the appropriate antibiotic, antiviral drug, etc. The chance of Cancer is also increased with the use of immunosuppression drugs. [1][2][5][6][7][8][12][16][19][23] Potential Further Studies Demi-Lee Brennan, an Australian whose body changed blood type and adopted the immune system of her donor after a liver transplant. Her body no longer rejects the transplanted liver. Her case is unique and scientists are interested in finding out how this occurred. Duplication of this would be a potential solution to transplant rejection. Some grafts survive despite the presence of anti-donor antibodies. This acquired resistance to antibody-mediated damage is known as Accommodation and is poorly understood. [6][8] The Human Immune System and Antibodies The immune system recognizes as foreign and attacks anything different from your normal body tissues. Even substances that are only slightly different, for example a transplanted organ or tissue, are considered foreign invaders. The immune system uses histocompatibility antigens to recognize material as self or foreign. Antigens occur on the surface of every cell and the immune system will attack anything that does not display the antigen of that individual. The immune system cannot tell if the foreign material is harmful or not, just that it is different. The transplanted organ or tissue is different and therefore the immune system will try to destroy it. There are two kinds of immunity in a human, Innate Immunity and Adaptive Immunity. The bodys first line of defence against invaders is the Innate Immunity. It is provided by barriers like tears, mucus, skin, saliva and the rapid inflammation of tissue. If an invader gets past the Innate Immunity, the immune system will make a customized defence, the Adaptive Immunity. It is a specific response depending on the specific invader and it has a memory, which allows it to respond better to the specific invader if it attacks again. The Adaptive Immunity does not attack normal body components, only substances it recognizes as non-self. White blood cells (leukocytes) are the main component of the immune system. Macrophages, a type of white blood cells, surround and eat invading materials. Macrophages can also attach to themselves to invading agents and transport them to another part of the immune system to be destroyed. Lymphocytes are specialized white blood cells that identify and destroy invading antigens. Each lymphocyte has a unique antigen receptor on its surface that can bind to a matching antigen on the surface of the foreign invader. They constantly travel throughout the body looking for invaders. All lymphocytes begin as stem cells in bone marrow, but they mature in two different places. Several lymphocytes mature in the bone marrow and they are called B-lymphocytes (B-cells). B-cells form Plasma cells that make antibodies. Each B-cell has a unique receptor on its membrane, called B-cell receptor (BCR) that is designed to fit a specific antigen. When the BCR binds to an antigen molecule, the B-cell surrounds it and breaks it up. The result is the histcompatibilty molecules and then the body B-cell can identify the antigen. Other lymphocytes called T-lymphocytes (T-cells) mature in the thymus. Some T-cells called cytotoic or Killer T-cells directly destroy cells that are displaying a certain antigen on their surface. Other T-cells, Helper T-cells, regulate the immune system by controlling the strength of immune responses. [1][3][5][6][7][8][10][11][23] Types of Immune Responses Humoral Immune Response The Humoral response attack invaders that act outside of cells, like bacteria and poisons. When an invader antigen enters the body, Macrophages take the antigen and attach it to MHC molecules. The MHC molecules display the antigen to the T-helper cells and they attach to the presented antigen. This stimulates the T-helper cells to divide and produce interleukins. The Interleukins activate a B-cell that has bound the antigen. The activated B-cells then divide and secrete antibodies. Antibodies, also called immunoglobulins (lg), are Y-shaped proteins and they are found in blood and other bodily fluids of vertebrates. Antibodies are produced by a kind of white blood cell, called a plasma cell. Surface immunoglobulin are attached to the membrane of the effector B-cells, while antibodies are the secreted into the bloodstream and body cavities. The membrane-bound form of an antibodies is forms part of the BCR on B-cells. The general structure of all antibodies are very similar, except for a small region at the ends of the two arms of the Y used for binding antigens. This allows many different antigen binding sites to exist between the antibodies, allowing the immune system to recognize a wide diversity of antigens. The base of the Y determines how the antibody will destroy an antigen or foreign material. Antibodies into are classified into 5 classes/isotypes: lgM, lgG, lgA, lgD and lgE. They perform different roles and form part of the immune response against foreign objects. The secreted antibodies bind can the antigen and destroy it. Antibodies may also stop the harmful effects of an antigen by attaching to it and neutralizing it. Antibodies also help destroy antigens by tagging it for attack by other parts of the immune system. Cell-mediated Immune Response The Cell-mediated Response attacks invaders, like viruses, that reproduce inside cells. It also destroys cells that cause the growth of improper structures, like cancers. After an invader antigen enters the human body, Macrophages attach the antigen to MHC molecules. The MHC molecules present the antigen to the T-helper cells and they bind the antigen, which motivates the T-helper cells to divide and secrete interleukins. The Interleukins activate killer T-cells. Killer T-cells directly destroy the cell/s that are infected with or that are producing a certain antigen. [3][7][8][10][11] CONCLUSION: My Hypothesis that antibodies do not play a role in the rejection of a transplanted organ or tissue is incorrect. Antibodies are very important in transplant rejection, because they form part of the mechanism that rejects the organ or tissue and they are one of the main components of the Human Immunity System. When the healthy organ or tissue is transplanted into the body of the recipient, it does not have the same tissue antigens of the recipients body. Each human has unique tissue antigens, therefore a perfect match is seldom found. Antibodies form part of humoral rejection response to the transplanted organ or tissue. They are the main element in recognizing a foreign agent, because they have unique antigen binding sites. Antibodies especially play a role in Hyperacute, Humeroral and Chronic Transplant Rejection, as they are all humoral-mediated rejections. Anti-Donor antibodies are secreted by plasma cells after the T-helper cells have collected the transplants antigen and identified it as foreign and non-self. Pre-existing antibodies circulate through the bodily fluids of the human body looking for foreign material to recognize. Some antibodies also form part of the membrane receptor of the B-cells used to identify and recognize antigens of the transplanted organ or tissue. After the antibodies have bond to the foreign antigen of the transplanted organ or tissue, therefore recognizing it, it will decide how to destroy the organ or tissue or if it will tag it for attack from other parts of the immune system. Leading to Transplant Rejection and the destruction of the transplanted organ or tissue. BIBLIOGRAPHY REFERENCING: Websites: http://www.nlm.nih.gov/medlineplus/ency/article/000815.htm, Transplant Rejection, Medline Plus, 23 February 2010, David A. Kaufman, MD, Section Chief, Pulmonary, Critical Care Sleep Medicine, Bridgeport Hospital-Yale New Haven Health System, and Assistant Clinical Professor, Yale University School of Medicine, New Haven, CT. http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/T/Transplants.html, Organ Transplants, 1 November 2009 http://www.chfpatients.com/tx/txrejection.htm, Transplant Rejection, CHF Patients, 3 June 2002 http://www.uihealthcare.com/topics/medicaldepartments/surgery/rejection/index.html, Rejection: Organ Transplantation, UI Healthcare, 7 August 2006, University of Iowa Hospitals and Clinics http://immunology.suite101.com/article.cfm/why_organ_transplants_fail, Why Organ Transplants Fail, Immunology, 5 June 2009, Jitendra Rathod http://discoverysedge.mayo.edu/abo_posxmatch/index.cfm, Overcoming Antibody Barriers to Kidney Transplant, Discoverys Edge, 2010, Mayo Foundation for Medical Education and Research http://emedicine.medscape.com/article/432209-overview, Immunology of Transplant Rejection, eMedicine, 28 July 2009, Prashant Malhotra, MBBS, Fellow, Division of Infectious Diseases, North Shore University Hospital http://en.wikipedia.org/wiki/Transplant_rejection, Transplant Rejection, Wikipedia, 27 March 2010 http://en.wikipedia.org/wiki/Organ_transplant, Organ Transplant, Wikipedia, 21 March 2010 http://en.wikipedia.org/wiki/Antibody, Antibody, Wikipedia, 23 March 2010 Books: Westen, Trevor. 1976. The Hamlyn Family Medical Dictionary. Hong Kong: Toppan Printing Co. p16,187-188,367-368. Danovith, Gabriel. 2001. Handbook of Kidney Transplantation Third Edition. Philadelphia: Lippincott Williams Wilkins. p17-61,146-162. Malan, Marais.1968. Heart Transplant. Johannesburg: Voortrekkerpers. p21-36. Magazines: Meyer, Rilette. Die grootste geskenk. Vroukeur. August 2009, p22 Unknown. n Geskenk van lewe. Vroukeur. August 2009, p31 Salzwedel, Ilse. Bloed Bande. Huisgenoot. Winter 2008, p22-28 Ramsamy, Prevashni. The Ultimate Donation. February 2006, p30-32 Newspapers: Unknown. Orgaanskenkings gee die geskenk van lewe. Die Burger. 29 September 1998 Hudsen, Mari. So verloop die proses van orgaanskenking. Die Burger. 14 August 2000, p5 Gerber, Jan. Tekort aan skenkers van organe. Die Burger. 14 April 2007 Wessels, Elsa. Nalaat van organe vir oorplanting is grootste geskenk denkbaar. Die Burger. 5 August 1998, p13 Kees, Revona. Orgaanskenkers kan talle lewens red. Die Burger. 31 August 2005, p10 Medical Journals: Chan, Laurence. 2000. Transplant Rejection and its Treatment. Chapter 9 (pg. 9.1 9.13). Cover Picture and Background: Source: http://upload.wikimedia.org/wikipedia/en/a/ab/Outline-body-aura.png

The Character Horatio in Shakespeares Hamlet Essay -- Shakespeare Ham

The Character Horatio in Shakespeare's Hamlet In the play Hamlet, by William Shakespeare, the confidant Horatio is created to serve a number of different purposes. Horatio is a flat character. He is a loyal, obedient, and trustworthy companion to Hamlet. His character does not undergo any significant transformation throughout the play, except that he serves as a witness of the death of Hamlet, Claudius, and Gertrude. Horatio's role in the play seems to be as a utilitarian character that Shakespeare created in order to heighten the suspense of the play. Also for Horatio to be Hamlet's ear so as to appease the audience's ear, and to communicate the moral of the play. Horatio serves often as the voice of reason, for instance; he is skeptical of the watchman's testimony that a ghost appeared during their watch in the previous night. Marcellus says of the watchman's testimony, "Horatio says 'tis but our fantasy, / And will not let belief take hold of him" (1.1.23-4). Horatio believes the watchmen only when he witnesses the ghost and even then is still skeptical. He is also the voice of reason when he asks Hamlet to restrain himself from meeting the ghost. He is afraid that Hamlet will hurt himself or go mad (1.4.63-91), finally telling Hamlet, "Be ruled, you shall not go" (1.4.81). Hamlet often seeks verification of events from Horatio as well. Horatio agrees with Hamlet, in 1.4, that the night is cold (1.4.2), and verifies Hamlet's belief that the ghost is "wondrous strange" (1.4.164). Horatio does not exaggerate about the length of the stay of the ghost. In 1.2, Horatio tells Hamlet that the ghost stayed in his presence for possibly "a hundreth" ( 1.2.137), followed by Marcellus and Barnardo's utterance, "Longer, longer" (1.2... ...he allegiances for power that lead to death. Horatio is the only victor, for he did not plot, and remains alive to tell this tragedy to others. Horatio is Shakespeare's utilitarian character. Horatio serves as a foil to Rosencrantz and Guildenstern, prompts Hamlet to disclose his feelings, gives vital information in the form of exposition (verbal or in a letter) or verification of Hamlet's reality, and helps to build the suspense of the play. The only emotional aspect of his character is that he remains alive, and serves as a vehicle for Shakespeare's moral of Hamlet. Works Cited and Consulted Berman, Allison. "We Only Find Ourselves." Hamlet reaction papers. Wynnewood: FCS, 2000. Lugo, Michael. "The Character Horatio." Hamlet reaction papers. Wynnewood: FCS, 2000. Shakespeare, William. Hamlet. 1600? Ed. Sylvan Barnet. New York: Signet Classic, 1998