stem cells :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  After a typical delivery the umbilical cord and the blood within it is discarded. Now researchers have discovered that this blood contains valuable stem cells which can be used in the treatment of several blood disorders. Stem cells are simply undeveloped cells that develop into platelets or red and white blood cells. Stem cells will continue to produce blood cells for an indefinite period of time after transplantation. Until the discovery of stem cells in umbilical cord blood and placentas, bone marrow stem cells were the primary means available to those in need of a transplant. The harvesting process for bone marrow stem cells involves anesthesia, and major surgery with a collection time of up to four hours. Cord blood stem cells can be harvested directly from the already detached umbilical cord and placenta in about five minutes, with no pain, anesthesia, or patient risk. There are two types of cells used in stem cell transplantation. Haemopoietic stem cells co me from umbilical cord blood. Bone marrow stem cells are known as autologous. Stem cell transplants are necessary after a patient has undergone a radical treatment such as chemotherapy. While these treatments destroy unhealthy cancerous cells, they also destroy otherwise healthy cells that are needed to maintain a strong immune system. Stem cells from cord blood transplants typically fail for one of two reasons. The first occurs if chemotherapy fails to kill the pre-existing tumor, and the second if the newly introduced graft becomes infiltrated with tumor cells. Stem cells from umbilical cord blood do have a few downsides. First, the available collectable volume is not typically enough to reestablish an adult immune system. Most adults and older children are not suitable for cord blood transplantation. Also, there is not enough blood to create a reserve in case of unsuccessful engraftment. Only small amounts of blood can be obtained from umbilical cords, so recipients are tradition ally children who require fewer stem cells than adults. One advantage of cord blood is that it does contain significant numbers of stem cells that can be stored indefinitely. It also poses no medical risks to the donor, and has a low graft-versus-host-disease (GVHD) threat even when combined with a non-matched donor. Minority children stand to gain the most benefits from umbilical cord blood (UCB) because there is such a small reserve of donated minority blood and exact matches aren’t always necessary with cord blood.

Google vs bing

Google and Bing are competing to be the most used and talked about search engine on the Internet. To hold this title means a great deal of wealth generated from a successful search engine. The more traffic a search engine generates, the more money It can produce In the forms of endorsements and advertisements. In reality, competition Is good for both companies as it forces both to continually make improvements and strive to develop the best possible product for the public.This competition is one of the driving forces of our free market economy oday. The company's history of Google has been around since the early 90's. It was created and started as a search engine by two grad students at Stanford who major in computer science and the company has grown extremely large since its first days in Susan WoJcicki's garage in Menlo Park. Today, Google controls the search engine landscape. A shared market survey carried out by Search Engine Land in March of 2012 found that Google controlled abo ut 66. 4 percent of the market.Never the less, this Is a enormous percentage and Google has used its success to take hance Into many different fields away from purely Just Its search engine. Some of these may Include: videos, social media, mapping, and even creating Its own operating system. As one of the biggest technology companies on the planet, Microsoft is no foreigner to adjusting to new trends in technology. Raiseing the majority of its success and resources with the uses Windows operation system, Microsoft decided to make its own search engines that have unfolded over the years.Its current version of a search engine website is Bing. This site is a revised version f Live Search which itself came from Windows Live Search and trails all the way back to MSN search, Bing was launched in 2009, and at first it focuses on having an interactive interface with focus on searches, maps, videos, and other interactive media. Considering that this search engine Is new to the search engine world, It Is gaining prompt momentum. According to the same market share survey from Search Engine Land from March 201 2, Bing currently controls 15. percent of the search engine market. Now and days both companies now find themselves In a battle for ho can make the latest development in the battle to control the online market. Though Google owns a much higher percent of the market, Bing is gaining momentum and is now Google's greatest competition. For the two companies that own these search engines, there are billions of dollars of resources at both the company's fingertips for improvement, research, and development of their products.The two companies have both attempted to make use of the social media in their continuing struggle for power, and their results are on a different path. Google has tried to start its own social media site. Google plus has linked up to Google and the company has embraced a multitude of features so the two sites can run and mesh together effectively. Mic rosoft went on to Join with an outside social media site. Bing has an exclusive relationship with the social media giant Facebook. The reality of this different strategy favors Bing because the popularity of Facebook Is far bigger than Google plus.As a result of this, Bing will likely continue to grow in popularity Decause 0T I users. Another area of competition that has affected the operation of the companies is the actual power of the search engines they are promoting. Google's search algorithm gave revolution to the search engine world. It has been the driving force to the company's success. By Bing adopting the same search algorithm has to face an opponent with, most likely the best programming in the business. To compete the search engine, Bing launched an advertisement campaign that used the classic â€Å"taste test† strategy.The idea of this campaign was for users to blindly use the two websites ( like in the commercials) for a search and then choose which engine produ ced a better result. Unfortunately for Bing, this strategy backfired. Though they xpected to see more users prefer their search engine, the power of the Google algorithm won the battle. According to the International Business Times, Google â€Å"came out ahead in both cases, winning 3:2 in the first test and 4:1 in the second,† A final area that the two search engines compete is their marketing gimmick.Google is an oddity among companies. It has not put much of resources into its marketing. The news got around mostly by word of mouth. Bing, on the other hand, faces a different situation. As a new, emerging search engine, it will not likely gain the popularity Google has by simply word of mouth. One strategy Bing can use is to market the differences between the two companies. They can market their social media band instead of Just claiming to be a better search engine. Competition is one of the best parts about businesses in todays free market economy.It makes companies consta ntly improve their products. The battle is currently wrenching between Google and Bing is another example of this fact. Both these companies are trying to make their websites constantly better than the others. The use of creative improvements to the companies has provided for continuous beneficial growth of both companies. By breaking into social media, user interfacing, videos, maps, and more, the companies are providing the public with two easy and convenient options for their search engine needs.I believe in the future we will see a shift in the strategies from the current for both companies. Google will probably back off the social media push it has made and focus more on being a knowledge based search engine that is quick, easy, and reliable. Bing will take the route of expanding its social media connections and try to show that it is a more than a user-friendly system that is great for searching within these specific domains.

‘the Crucible’ and ‘the Island’ - Belonging Essays

To belong is to be, or have the feeling of being accepted or included by a certain group, person, place or community. While initially an individual may belong to a community or group, speaking their opinion can seclude them, and cause them to become an outsider. Belonging to a community or group can be very beneficial, and not belonging can cause an individual to face consequences. Hysteria and fear can be caused throughout a community by outsiders who don’t belong. We are able to view these experiences of belonging and not belonging through the use of characters and events throughout a variety of texts. Arthur Miller’s play â€Å"The Crucible† and Armin Geder’s picture book â€Å"The Island† display how an individual can belong and not belong at†¦show more content†¦As the community continued to fear the outsider, while few still agreed with The Fisherman, the majority turn against him and his ways, â€Å"Some people agreed with the fishe rman, but the other people were louder.† This symbolises that majority or the larger group overrides all other opinions, and shows the consequences of not belonging. They eventually end up setting fire to The Fisherman’s boat which shows that the fisherman is now also an outsider and no longer belongs within the community. However this differentiates with ‘The Crucible’, as Hale chose to turn his back on the community whereas The Fisherman was forced out of the community. Belonging to a community or group can be beneficial for an individual. In ‘The Crucible’, when Abigail is at trial and Mary Warren is accusing her of witchcraft and lying, Abigail uses the power of being the leader of the group of girls to deny the accusations and turn the conviction on to Mary Warren. Abigail does this by having the girls pretend that Mary Warren is bewitching them causing them all into a hypnotic state. This shows the power of being in a group with the stage direction ‘Mary Warren becoming overwhelmed by Abigails’ – and the girls’ conviction – start to whimper’. The group of girls’ combined accusations on Mary Warren convince Judge Danforth that that they’re telling the truth and are now seen as the innocent victims as he states with furious intense line deliveryShow MoreRelatedArmin Greder841 Words   |  4 Pagesstudents. My name is Armin Greder the illustrator of ‘The Island’ One of the ideas that I have always been fascinated in, is the interaction between individuals and society and how this influence’s our sense of belonging. 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The dominant classes used the law to assimilate whiteness with American citizenship, as Jacobson shows with the European immigration from the late eighteenth centuryRead MoreRastafarian79520 Words   |  319 PagesBabylon. â€Å"Beating Down Babylon†: Ideological Delegitimation Rastafari is ï ¬ rst and foremost a response to the Babylonian conditions of the Jamaican society and, by extension, of the whole Western world. The Rastafarian phenomenon was forged in the crucible of oppression that started in plantation slavery and that has persisted in post-emancipation and postcolonial Jamaica. The manner in which some experienced and perceived the realities of the colonial society called forth the response and shapedRead MoreManagement Course: Mba−10 General Management215330 Words   |  862 Pagesusually was judged and measured by the depth and capability and hard-asset credentials of the company’s management. That, of course, remains critically important. However, American companies whose performance most readily slipped in the economic crucible at the beginning of the twenty-first century (and whose recovery was among the slowest) seemed to rate highest in hard-asset terms compared with the many companies with a higher mix of soft-asset management strength, whose results were far betterRead MoreStephen P. Robbins Timothy A. Judge (2011) Organizational Behaviour 15th Edition New Jersey: Prentice Hall393164 Words   |  1573 PagesCarolina University John Guarino, Averett University Rebecca Guidice, University of Nevada at Las Vegas Andra Gumbus, Sacred Heart University Linda Hackleman, Concor dia University Austin Deniz Hackner, Tidewater Community College Michael Hadani, Long Island University Jonathon Halbesleben, University of Missouri-Columbia Dan Hallock, University of North Alabama Tracey Rockett Hanft, University of Texas at Dallas Edward Hampton, University of Central Florida Vernard Harrington, Radford University Nell