... prompt action to isolate the virus before it has dispersed. The virus is a member of a family of RNA viruses know as filoviruses. Marburg virus and four viruses: Zaire, Sudan, Reston and Tai are the five different viruses that have been known to cause disease in humans, while Reston only causes disease within monkeys. Filoviruses, arenaviruses, flaviruses, and bunyaviruses are the viruses responsible for causing viral hemorrhagic fevers. All forms of virus of viral hemorrhagic fever begin with fever and muscle aches. These diseases usually progress until the patient becomes very ill with respiratory problems, severe bleeding, kidney malfunctions, and shock. The ...

... on our society will be discussed herein, concentrating on selective breeding, genetic engineering, the identity of ‘clones’, enhanced cell growth products and production of spare body parts. Firstly, selective breeding throughout the ages has served humanity in many ways. The origins of cloning lie in the agricultural history of humanity. Therefore the perceived gap between cloning and our nature are not so distant, as cloning has been the means by which humankind has cultivated flora for a millennia. In addition, selective breeding has been the means by which humankind has manipulated fauna for its own ends. In both cases genetic manipulation does serve humani ...

... in the plant. On the night of December 2nd, 1984, the unnamed suspect pumped large amounts of water into a chemical storage tank with a hose (Saxon, 1). The tank was filled with the gas Methyl Isocyanate (MIC), a chemical used in pesticides and very lethal to humans (Leonard, 3). Around 11:00 p.m., a worker noted that heat and pressure were building in a tank and called for assistance, but by then it was too late. At 12:56 a.m., the morning of December 3rd, a faulty valve ruptured, allowing the deadly gas to escape into the atmosphere and cause a huge vapor puff to fall onto silent, sleeping Bhopal (Cush, 30). Before the release of 40 tons of MIC, Bho ...

... con moléculas de carbono e Hidrógeno (comúnmente presentes en el aire). Por mucho tiempo se les usó como pesticida, pero ya dejaron de ser efectivas pues algunas clases de insectos, lograron transformarse para que las dioxinas no surgieran un efecto mortífero en ellos y por tanto dejaron de ser efectivas. Esto llevó a que por algún tiempo (y en la actualidad en pocos lugares en donde todavía se usa este tipo de pesticida), las dioxinas llegaron hasta nosotros no solo por el aire sino que directamente por los alimentos. Son lipofílicos, es decir solubles en las grasas y sus moléculas están unidas por enlaces fuertes que les dan una vida media entre los 7 y l ...

... and development to sales on changes in the skill composition of industries (for examples, Berman, Bound and Griliches, 1994). The results of these studies are consistent with those of the case studies and the hypotheses that the recent technological change has shifted the relative demand for skilled labor to the right. Changes in production techniques have widened across the country quickly, especially the multinational firms. Thus, if technological change is an important determinant of relative demand shifts, one would expect to observe patterns in other industrialized countries similar to those in the United States. Some of the recent studies report results ...

... however, obtain oxygen from a different aquatic respiratory medium---water. The dissolved oxygen concentrations in an aquatic environment is much lower than the 21% oxygen concentration available in the atmosphere (Barstow et al. 1999), hence special problems pertaining to the acquisition of sufficient amounts of oxygen arise for aquatic organisms---namely fish. Fishes have had to develop adaptations that enabled them to adapt to this problem. Since water contains an insufficient concentration of oxygen, fishes use gills to obtain the required amount of oxygen---via the counter-current exchange process. As water enters the mouth of a fish, it passes through slit ...

... that can damage an ecosystem. The petroleum industry is working closely with government agencies, universities and research centers to reduce the frequency and impact of oil spills. As a result of new operating procedures and research into advanced technologies, the industry has made tremendous progress in preventing spills over the past decade. In 1997, the latest year that Coast Guard statistics are complete, the volume of oil spilled in U.S. waters declined by two-thirds compared to the year before, representing the lowest amount recorded since the Coast Guard began publishing data in 1973. And more than three-fourths of those spills were under 10 gallons -- ...

... of the disease is most commonly in late adolescence or early adulthood. In the U.S.A., schizophrenia fills more beds than almost any other illness and the financial cost of schizophrenia due to direct medical costs, lost productivity and Social Security pensions is between $30 billion and $48 billion according to Federal figures (American Pychological Association (APA), 1996). There are many theories about the aetiology of schizophrenia, but research has failed to pinpoint the origins. There is evidence that environmental pathogens (for example, viruses) are involved in the causation of schizophrenia. There is also evidence for a role of hereditary influenc ...

... 1997). The abnormal gene, which causes an increased presence of chlorine within the exocrine cells, was identified in 1989 and is known as transmembrane conductance regulator (CFTR) (Hopkin, 1998). is the most common genetic disorder in the white population (Hopkin, 1998). Almost every article or book about begins with a statement similar to the one above. People who have genetic disorders are born with them. The inherited genetic defect causes a chemical error in all the cells in their body (Silverstein, 1994; Wagner, Reynolds, Moran, Moss, Wine, Flotte, Gardner, 998; Shapiro, 1991; Drake, 1995). In children and adults with CF, a mistake in a single gene disabl ...

... it turns into lepromatous. This formattacks nerves, the skin, the mucous membranes, and the eyes.In most cases it is easy to detect the disease. At first many people will loose a sense of feeling in a patch of skin. Then after the loss of feeling in certain area the muscles may become paralyzed due to the damage of the nervous system. Many times since people loose feeling in certain areas of their body, injuries occur to them that are unnoticed and become infected. After the disease has settled into ones body it starts to eat away at thebones causing people to loose parts of their body. All of these signs can be prevented with early detection.In the past chaulm ...