.... (III) chloride (Jacobsen's Catalyst). (R,R) Jacobsen's Catalyst Jacobsen's catalyst opens up short pathways to enantiomerically pure pharmacological and industrial products via the synthetically versatile epoxy function . In this paper, a synthesis of Jacobsen's catalyst is performed (Scheme 1). The synthesized catalyst is then reacted with an unfunctional alkene (dihydronaphthalene) to form an epoxide that is highly enantiomerically enriched, as well as an oxidized byproduct. Jacobsen's work is importa .....

.... A major use of mercury is in electrical equipment such as fluorescent lamps, and mercury batteries. Mercury is used in thermometers because the change in volume for each degree of rise or fall in temperature is the same. The use of mercury in the thermometer instead of alcohol was done by Gabriel Daniel Fahrenheit in 1714. It was also used in vacuum pumps, barometers, and electric rectifiers and switches. Mercury is used in a mercury-vapor lamps which are used as a source of ultraviolet rays in homes and for sterilizing water. Mercury-vapor is also used instead of .....

.... there is more to eat. The sexual characteristics of the bass remain the same nort and south. The spawn in the spring, when water temperatures begin to move past sixty degrees fahrenheit. The spring spawning urge in a bass is set off by both water temperature and photoperiod. Photoperiod is the proportion of the day in which the bass are exposed to sunlight. As the day light hours grow longer through the spring and early summer, so does the photoperiod. This process affects the temperature of different bodies of water in different ways. Small shallow ponds heat up much e .....

.... ideas about what causes an aurora were left to old legends and unsubstantiated theories. The inuit believed that the northern lights were the spirits of dead relatives, dancing around in the sky, while the Vikings believed that they were caused by a fire on the edge of the world. In the fourteenth century, Aristotle described the auroras as jumping goats caused by the earth=s vapours being set on fire by meteors. Later on, in 1707, a Norwegian physicist claimed that they were caused by steam and smoke that escaped from a heat source beneath Greenland. It was not until the .....

.... planet or natural satellite in our solar system. The surface temperature on the side of Mercury closest to the Sun reaches 427 degrees Celsius, a temperature hot enough to melt tin. On the side facing away from the Sun, or the night side, the temperature drops to -183 degrees Celsius. Scientists have detected a magnetic field surrounding Mercury, though it is not as strong as the field around the Earth. Scientists theorize that Mercury's field is due to an iron-bearing core or possibly to the solar winds. Mercury's atmosphere is very thin and is composed of helium and sodium .....

.... The tadpoles, however, never matured into frogs. The Scottish researchers have failed many times with sheep cells before their success, but the task was perfected and accomplished. Now this accomplishment has made it possible for the cloning of almost any mammal, including humans. To the average person, exactly how the technique works is unclear. Scientist predicted that by making cells dormant and bringing them close to death, something happens to break the chemical locks (barriers) that keep most of the genes inactive. The mammary cell is inserted into an unfertilized she .....

.... future. Our Economy is not the only thing we should worry about, and it is also not the only thing that can be improved by the use of bicycles. There are several major problems that could be drastically reduced by the increased use of bicycles. Traffic would be a lot lighter due to the extremely small size of bicycles. It would also greatly reduce the wear and tear on our roads and highways, and therefore reduce government expenditure. But one of the most serious problems it would reduce is that of pollution and smog in out larger cities. There are more benefits to bikin .....

.... period of 15 months with an interbirth interval of a single calf every 2.5 to 4 years, making it a slow process for rhinos to be introduced back into the world by birth” (International Rhino Foundation 3). “The Black Rhino is illegally hunted for its ivory horn that ranges between one foot to one foot eight inches long” (Speart 26). The animal is slaughtered for its horn while its carcass is left for the vultures. Since the Black Rhino was put on the list in the 1980s, conservation agencies have aided to help the Black Rhino to rebound. “Now under strict control, th .....