.... regular production of ADA in cells throughout the body. Without at least one properly functioning gene, children have no way of converting deoxyadenosine (a waste product) into inosine. This leads to the rapid build-up of deoxyadenosine in the system, which becomes phosphorlyzed into a toxic triphosphate, which kills T-cells. The result is an almost complete failure of the immune system and early death. Previous treatment options included bone marrow transplants, which worked well with matched donors. A major breakthrough occurred with the development of polyethylene glycol coated A .....

.... fifth rule is to be extremely careful with equipment. Not only for money purposes but also for your own personal safety. The sixth rule is to not touch anything that the teacher or the lab specifically instructs you to. Because you don't need to. The seventh rule states that activities should only be done if they are specifically discussed in your lab. This is for safety purposes and for the liability of the school. The eighth rule is that you are not to contaminate chemicals by using equipment in more than one substance without washing it thoroughly. Doing this can cause explo .....

.... also take part on lakes. Coastal flooding can be a great danger because coast lines are very densely populated areas. In the United States in the early 1990's 50% of the population was on a coastal county.1 Although they shrink before reaching shore, wind generated waves have been spotted to be as high as 30 m (100 ft) in the middle of the ocean.2 In 1970 a major storm in the Bay of Bengal produced heavy seas that flooded regions of East Pakistan, killing about 200,000 people.3 River flooding can happen a number of ways. The causes are rain, snowmelt, and ice jams. Soil can not .....

.... the wind sets the surface waters into motion as currents. The currents generally flow horizontally-that is parallel to the earth¡¦s surface. The wind mainly affects only the upper 100 to 200 meters of water. However, the flow of wind-driven currents may extend to depths of 1,000 meters or more. Thermohaline circulation produces great vertical currents' hat flow from the surface to the ocean bottom and back. The currents largely result from differences in water temperature and salinity. The currents move sluggishly from the polar regions, along the sea floor, and back to the surface. In t .....

.... lives. Levinson's concept of life structure (the men's socio-cultural world, their participation in their world and various aspects of themselves) is the major component in Levinson's theory. The life structure for each person evolves through the developmental stages as people's age. Two key concepts in Levinson's model are the stable period and the transitional period in a person's development. The stable period is the time when a person makes crucial choices in life, builds a life structure around the choices and seeks goals within the structure. The transitional period i .....

.... antibiotics developed that doctors and scientists focused their attention on other problems plaguing the nation. Doctors prescribed antibiotics frequently, often when they were not even needed. According to a 1998 report by the Institute of Medicine, up to fifty percent of antibiotics are prescribed unnecessarily. This blatant overuse of antibiotics had a profound effect on the efficiency of the drugs in the future. The wonder drugs that had been so effective in treating an array of diseases had started to lose the battle against increasingly resistant bacteria, often referred to as s .....

.... exact, it is possible to project the positions of the sun, moon, and planets for any given time. Astrologers use this information to draw-up a horoscope and forecast the "influences" that will affect the soul at that time. Astrologers usually do not predict actual events in the future. They can only say what might happen, or could happen, but not what will happen--much like a weather forecast; although many psychics do make predictions, and astrology is the tool they use to focus their abilities. Another common feature of astrology is the comparison of birth charts to ascertain the compati .....

.... report on the cloning of the human's morphine receptor is advantageous to us because this helps scientists to develop new analgesics. The third section of the paper contains a brief discussion about the advantages and the disadvantages of genetic cloning. It speculates how our future will improve due to the technologies we are developing, and also the biggest drawbacks which might come from it. The last part of the paper, is the explanation of complicated terms used in this paper. The terms which will be explained are printed in bold terms throughout the paper. This section, the gloss .....

.... other planets. The United States has sent automated spacecraft, then human-crewed expeditions, to explore the Moon. Our automated machines have orbited and landed on Venus and Mars; explored the Sun's environment; observed comets, and made close-range surveys while flying past Mercury, Jupiter, Saturn, Uranus and Neptune. These travelers brought a quantum leap in our knowledge and understanding of the solar system. Through the electronic sight and other "senses" of our automated spacecraft, color and complexion have been given to worlds that for centuries appeared to Earth-bound .....

.... measurement of the wavelength and intensity of the absorption of infrared light by a sample. The wavelength of IR absorption bands are characteristic of specific types of chemical bonds. An IR spectrophotometer is an instrument which is designed to obtain an infrared spectra of a molecule. An IR spectra is obtained by first irradiating a sample with an IR source of light. The light passes through the sample, which can be in solution or contained within a salt plate, and then onto an IR light detector. The spectrum is analyzed by examining at which freq .....