.... commercially synthesized form of a naturally occurring compound whose uses can be traced back 2,000 years. The compound, called salicin, is found in the white willow tree. Around 200 B.C., Hippocrates, the Greek physician, discovered that chewing on willow bark could relieve pain and fever. Although ASA was a proven pain reliever, no one really knew how it worked until more than 70 years after Hoffmann's discovery. In 1971, British pharmacologist John Vane discovered that the anti-inflammatory properties of ASA result from its ability to inhibit the body's production of certain chemical mediators (prostaglandins) that promote i .....

.... sun orbits the sun ever 365.25 days. The average surface temperature is 15 degrees. The distance from the sun is 150million km (93 million miles). The sun is 150million km (93 million miles) away from earth. It is 1.4million km (864,000 miles) in diameter. Its surface temperature is 5,800 degrees Celsius (10,472 degrees Fahrenheit). As the earth rotates on its axis the sun can only shine at one side at a time. When the earth spins around one side receives the light of day and the other is darkness of night. The earth turns in a counter-clockwise direction. As the earth rotates the sun rises in the east. The suns motion is ea .....

.... "Ciba-Geiby". That which was debated dealt with the Advisory Committee on Novel Foods and Processes (ACNFP) stating that "A gene resistant to the antibiotic ampicillin used in an early stage of the developmental process, could theoretically be passed to man via bacteria lodged in the gut of animals which eat the maize unprocessed (559)". In response to this attack, the company said that there would need to be a great amount of events that would have to take place. The transferring of DNA to the bacteria is just one of which was addressed. Therefore, the issue isn't settled. One then can only assume that until a hault is p .....

.... example, GAG or TCA. The four bases can be assembled into 64 possible codons. Because proteins are built from only 20 amino acids, most amino acids are specified by more than one codon. occur when one base is substituted for another or when one or more bases are inserted or deleted from a gene. Substitution affect only one codon, and in most cases the effect is minimal. One reason is the redundancy of the genetic code mentioned above. Because many codons mean the same thing, the altered codon might still specify the same amino acid. Furthermore, even if a mutation causes a wrong amino acid to be inserted into a protein, the chan .....

.... been much discussion as to whether or not the benefits of cloning outweigh the dangers. WHAT ARE THE BENEFITS IN CLONING RESEARCH? There is no doubt that Dr. Wilmut's new discoveries have brought an uproar of excitement between not only the scientific community, but the general public as well. Groups such as farmers, surgeons and even environmentalists have shown various interests in cloning research. The farming community has expressed much intrigue in cloning for the purpose of being able to reproduce copies of their best animals. For example, a dairy farmer would much rather be able to take his best dairy cow and recr .....

.... that one will go hungry, therefore killing them off too. Contaminated food has already happened to the food humans eat. For example, the Mad Cow Disease. This disease slowed the beef market down and it is easily happening in the other ocean creatures market. Humans have no right to kill what is not theirs, unless it is for food purpose only. Most humans do not realize that polluting the ocean kills animals, but the truth is, it does. Not only are animals at a risk, humans are too because of the unstable cliffs along the coastline. These cliffs are very unsturdy and have already claimed the life of one woman who was sitting below. .....

.... as an interground addition. Materials used in the manufacture of portland cement must contain appropriate proportions of calcium oxide, silica, alumina, and iron oxide components. During manufacture, analyses of all materials are made frequently to ensure a uniformly high quality cement. Selected raw materials are crushed, milled, and proportioned in such a way that the resulting mixture has the desired chemical composition. The raw materials are generally a mixture of calcareous (calcium oxide) material, such as limestone, chalk or shells, and an argillaceous (silica and alumina) material such as clay, shale, or blas .....

.... CANDU reactors. Nuclear power was cheap, if you did not have to worry about the waste. This was the answer to Ontario’s power problems, so they invested in the newest source of power at the time. Most people believed that nuclear power was a good change in Ontario’s power structure, and there would be no real problems in the future. Ontario needed a new source of power in the 1950s; they found it in nuclear power and it solved the problem. In the 1950s the average person did not have a lot of knowledge about nuclear energy, and nuclear studies were being held. All people really knew was the positive side of things .....

.... pressure, and the gas shoots outward; this is referred to by astronomers as a jet. Dust that had been mixed in with the gas is also pushed out, and as more jets appear, a small gas and dust shell forms around the nucleus, and this is called the coma. The coma, also called the head, is a dense cloud of water, carbon dioxide and other gases and comes off of the nucleus. They can be several thousand kilometers in diameter, depending on the comet’s distance from the sun and the size of the nucleus. The size of the nucleus is important because since large nuclei have a greater surface area facing the sun, which is the side that is .....

.... zoos involved in panda breeding, as well as to an exchange of information and technology between Chinese and western scientists. Some problems are, however, still experienced with animal husbandry, particularly the care and welfare of infants. Disease and rejection by the mother have been the main cause of death among cubs. Investigation of these, and other aspects of panda reproduction, now form an active part of the ongoing research programme. THREATS The main threats to the Giant Panda are habitat destruction and poaching. Young animals are caught for zoos, and adults are killed for their pelts which are used to mak .....