The Heart and Christian Bernard Essay Example for Free

The Heart and Christian Bernard Essay The Heart and Christian Barnard Christian Barnard, the man who performed the first human heart transplant. Christian Barnard was born in Beaufort West, South Africa on November 8, 1922. He was the fourth of five sons. His father was Adam Hedrick Barnard who was a reverend in the Dutch reformed church, he preached to a non-white congregation. His mother was Maria Elisabeth Deswart Barnard who had been a school teacher before marriage. Both parents were also Afrikaner missionaries. Christian Barnard grew up in a poor environment in Beaufort West, a town on South Africa’s semi-arid Great Karroo plateau. Christian Barnard attended a local high school he went on and received an M. D. degree from the University of Cape Town in 1953. He received a Ph. D degree from the University of Minnesota in 1958. He returned to the University of Cape Town in 1958 to teach surgery. He specialized in open-heart surgery and in designing artificial heart valves. The first human heart transplant was performed on December 3, 1967, transferring the heart of a 25 year old woman into the body of Louis Waskansky , a 55 year old grocer. He died 18 days later due to double pneumonia as a result of his suppressed immune system. The second transplant was on January 2, 1968 which was for Philip Blaiberg, who lived for 563 days after the operation. Christian Barnard spent the beginning of his adult life in the United States where he gained recognition for research in gastrointestinal pathology and later went back to South Africa and introduced open-heart surgery to that country and designed artificial valves for the human heart. Christian Barnard made a huge impact and contribution to healthcare when he attempted and accomplished the worlds first human heart transplant which was a huge success in the medical field. His accomplishment led to further investigation in heart transplants and which now is a normal surgery that is performed all around the world today. Christian Barnard had been bothered by rheumatoid arthritis since he was young, and advancing stiffness in his hands forced his retirement from surgery in 1983. He took up writing, however, and wrote a cardiology text, an autobiography, and several novels, including a thriller about organ transplants. He passed away on September 2, 2001. Christian Barnard has made a huge impact on healthcare and the study of medicine. Christian Barnard is a hero to me because he was brave enough to take a chance and put his reputation on the line to make a difference. Christian Barnard’s contribution to health care has changed the years to come in medicine and his contribution will always be remembered.

Fall of Constantinople :: World History

Fall of Constantinople By 350 A.D., Constantinople was one of the world's greatest capitals. The city was located between Asia and Europe, making it a very diverse and strategic place. The many bodies of water surrounding the peninsula gave Constantinople many trade routes as well as protection. The famous walls were also built to further strengthen security. Constantinople eventually rose to a beautiful city of strength and wealth. Its Greek heritage separated itself from the West with their religion of Eastern Orthodoxy. Despite the power of Constantinople, unending attacks and problems would eventually weaken the city. The first major catastrophe took place in 542, when a plague struck and killed massive amounts of people. The recovery was very slow, and it allowed for countless attacks. For Constantinople, however, it was just the beginning. Justinian ruled the Byzantine Empire during its height. His military faced strength from the East that greatly endangered his people. The Sassanian Empire of Persia was one threat that Byzantines needed to conquer. The Persians endangered eastern lands, so Justinian's military prevented any conquest. The Sassanians were defeated and security was briefly gained. After his success, Justinian wanted to regain lands the Roman Empire once lost to invaders. Byzantine armies began a reconquest of Spain, Italy, and North Africa. Battles against various Germanic groups took place, and western lands were conquered by the Byzantines. The wars were expensive, and resources were low. Defense became weak and territories were lost increasingly after Justinian's death. During the early 700s, the Byzantine Empire was in turmoil and chaos. As Leo III took power, Constantinople was being attacked by Avars, Bulgarians, and Arabs. The Arabs from the Middle East were a main concern for Leo III because of their large conquests in the Asia Minor. The Arabs advanced to spread their faith of Islam and control resources. The Arabs slowly acquired land until their siege on Constantinople itself. Leo III made brilliant defense moves to stop the invaders. His military forces attacked the Arabs from the rear successfully while naval forces were repelled with Greek Fire. Greek Fire was the empire's secret weapon that may have saved them from the Arab siege. Arab ships would burst into flames from contact with the "liquid fire." Fighting continued for a year until the Arabs retreated. Constantinople was defended successfully, but the empire suffered heavy losses and continued to loose land. The era from about 1025 to 1453 witnessed the Byzantine Empire in its ultimate destruction.

Paraphrase Sample

Unit II Assessment Question 2 Ramesh Punna Columbia Southern University Original Passage Large-Scale Complex IT Systems (Ian Sommerville, Dave Cliff, Radu Calinescu,Justin Keen, Tim Kelly , Marta Kwiatkowska,John McDermid, and Richard Paige): Complexity stems from the number and type of relationships between the system’s components and between the system and its environment. If a relatively small number of relationships exist between system components and they change relatively slowly over time, then engineers can develop deterministic models of the system and make predictions concerning its properties.However, when the elements in a system involve many dynamic relationships, complexity is inevitable. Complex systems are nondeterministic, and system characteristics cannot be predicted by analyzing the systems constituents. Such characteristics emerge when the whole system is put to use and changes over time, depending how it is used and on the state of its external environment . Dynamic relationships include those between system elements and the system’s environment that change.For example, a trust relationship is a dynamic relationship; initially, component A might not trust component B, so, following some interchange, A checks that B has performed as expected. Over time, these checks may be reduced in scope as A’s trust in B increases. However, some failure in B may profoundly influence that trust, and, after the failure, even more stringent checks might be introduced. Complexity stemming from the dynamic relationships between elements in a system depends on the existence and nature of these relationships.Engineers cannot analyze this inherent complexity during system development, as it depends on the systems dynamic operating environment. Coalitions of systems in which elements are large software systems are always inherently complex. The relationships between the elements of the coalition change because they are not independent of how th e systems are used or of the nature of their operating environments. Consequently, the nonfunctional (often even the functional) behavior of coalitions of systems is emergent and impossible to predict completely.Paraphrase for above passage: Minimizing the relationships among the entities in large scale system reduces the complexity. Complex systems are not very scalable and would be huge effort when we need to do any changes over time. Relationships should be changing depending on their performances over the life cycle of application to be more robust and granular. Dependency between the software systems must be identified in design phase to make a large scale system and failure to do this process would result in unstable and fragile software system.

Childhood Obesity Is The 21st Century Epidemic Essay

In the United States childhood obesity is the 21st century epidemic and will be for a long time. In the past 3 decades childhood obesity has been on the rise, and currently one and three children is obese. Only 2 percent of the children in the U.S have a healthy diet. Moreover, obesity rates are much higher in children than in adults, and it is the production and promotion of unhealthy foods as well as lack of physical activity that account for this disparity. It is one of the top health concerns facing children and parents in the U.S. Children that are obese face possible health concerns in the future. â€Å"The United States, Brazil, China, Russia and other countries have seen the rise of obesity in children more than adults.†20 The United Nations has 48 least developing countries that are still fighting childhood hunger; however, with globalization it has made the world more productive, wealthier, and with that body fat, weight, health and wealth are linked together. Until the early 1960’s childhood obesity had never been a problem. Between 1963-1970 the rate of obesity for children of both genders through the ages of 6-11 years old was 4.2 percent and for those between the ages of 12-19 the rate was 4.6 percent. From their the rates of children and adolescents who were obese would only increase. In the year of 1971-1974 the rate of 6-11 years old was 4.0 percent, and adolescents between the ages of 12-19 were 6.1 percent. Between the year 1976-1980 the rate of obesity inShow MoreRelatedChildhood Obesity800 Words   |  4 Pagesï » ¿ I. Introduction a. Childhood obesity is a rising epidemic in the United States. b. We can teach children healthy eating habits, incorporate physical activity and lead by example. II. Teaching healthy eating habits a. Educate children about healthy foods and their benefits b. Provide healthy alternatives to unhealthy snacks c. Limit fast food for meals III. Incorporating physical activity a. 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Medical doctors, scholars, researchers are all in agreement that there is a complete link between what we eat and drink,Read Moreforce have contributed to a dramatic shift in family eating habits. The traditional family dinner900 Words   |  4 Pagessafe neighborhoods also contribute to increases in childhood obesity. Our local community lacks organized opportunities for safe, recreational activities; therefore, in the absence of adult caregivers, many latch-key ch ildren are instructed to remain inside the home, watch television, play video games or surf the Internet. These sedentary lifestyle choices do not encourage active engagement which results in increases in incidents of childhood obesity. Our local school district’s socioeconomic statusRead MoreChildhood Obesity Epidemic1421 Words   |  6 Pagesdown prices and their addictive nature. For that matter, the commencement of the 21st century brought our attention to the childhood obesity epidemic. Although a widespread issue, it is also a discriminative one in the sense that specific groups--African Americans, Hispanics, and American Indians -- are disproportionately affected. The commencement of the 21st century brought our attention to the childhood obesity epidemic. Although a widespread issue, it is also a discriminative one in the sense thatRead MoreSchools Should Implement Programs Tailored to Prevent Childhood Obesity796 Words   |  4 Pages This essay exposes the adverse consequences of childhood obesity on the overall prosperity of the country, elucidating the urgent requirement of prevention programs in schools. Childhood obesity is one of the most alarming public health challenges of the 21st century(World health organisation.(2012). Obesity according to Bruce-Keller et al.(2009) is ‘a physiological condition in which excess body fat has accumulated to an extent that it can negatively affect health’. Over 90% of children in Australia