.... of 61 days, is useful for tracer work, as it produces energetic gamma rays. Technetium metal has been produced in kilogram quantities. The metal was first prepared by passing hydrogen gas at 1100C over Tc2S7. It is now conveniently prepared by the reduction of ammonium pertechnetate with hydrogen. Techne tium is a silvery-gray metal that tarnishes slowly in moist air. Until 1960, techne tium was available only in small amounts and the price was as high as $2800/g. It is now commercially available to holders of O.R.N.L. permits at a price of $60/g. The chemistry of technetium is said to be similar to that of rhenium. Techneti .....

.... During a time when Rod was down he wrote a letter to his wife and son: I want to die; I don’t want to move. I have no feeling for movement. To be left alone, to disappear. Not to be bothered with washing, shaving, talking, walking, going to the bathroom. If only to get out of this tunnel and heavy darkness, cold and oily, constantly pressing against my brain and being (Carter, 39) What would cause highly successful people like Rod Steiger, Kathy Cronkite, Patty Duke, even television reporter Mike Wallace and British Prime Minister Sir Winston Churchill to develop depression? Eric Hoffer described depression best when .....

.... Frankenstein is trying to make a human being from other, deceased human beings, this could be compared to cloning today, making one creature from another. The possibility, or theory of genetic engineering can guarantee that humans would be without deformity, affliction or frailty. Victor Frankenstein may not have chosen parts for his monster, or human that were necessarily beautiful, but Victor Frankenstein tried to make his product as earthborn as possible. Victor Frankenstein was simply doing the same thing that scientists have always been trying to do. Victor Frankenstein is trying to be like Charles Darwin and ex .....

.... the very early stages of heating, you may see some small bubbles even though the water is only warm. This is some air that is dissolved in the cold water and is being expelled by the heating. This is not boiling. As the water nears the boiling point, some areas of the container close to the heat source may be hot enough to cause some boiling in that area which produces some local bubbles. To be sure that all of the water is "at the boiling point," you should wait until there is a large amount of bubbles rising to the surface. The bubbles in are made of, air and/or water vapor, depending on how much air has been dissolved in .....

.... dose (100-200mg) can give the user feelings of giddiness or anxiety, and a moderate dose of Mescaline (200-300mg) begins to impair the senses. Strong doses (300-500mg) will induce hallucinations and effect the user's perceptions of color, time, and space. Heavy does of Mescaline (500-700mg) and frequent use of mescaline will cause symptoms of schizophrenia, psychotic episodes, and may be fatal. At any point the user may also feel the effects of nausea, dizziness, depressed or increased breathing, as well as increased heart rate and blood pressure. Long term effects also include chromosomal damage and possible birth defects. .....

.... 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 the polar regions, The surface waters become colder and saltier. Being colder and saltier makes these waters heavier, and they gradually flow .....

.... suffer from this condition is that bed-wetting should not be thought of as a behavioral problem. There is no medical proof to show that children wet the bed to spite their parents. Also, most children will outgrow bed-wetting eventually. As parents, the best way to help your child is to be understanding and remember that punishing or making fun of a child who wets the bed can only make the situation worse. Though as of yet a cause is unknown, some doctors believe that children who wet 22 the bed might have small bladders or be such deep sleepers that the urge to urinate does not wake them up. O .....

.... electrified thereby causing the two cells to fuse together combining their genetic structures. Cloning / 3 Now that we have established the scientific basis of cloning, let me tell you how cloning can directly benefit humanity. There are many health issues that can be avoided, reversed and cured by the cloning of human cells and body parts. With the aid of cloning technology, couples that have suffered infertility would be able to have their own biological children. Cloning technology may potentially be used to completely reverse the effects of heart attacks. It is a distinct possibility that scien .....

.... drugs to control the timing of the egg release and the chance of collecting more than one egg. This process is called "super ovulation". The egg follicles are then monitored through an ultrasound for four to five days. After at least three follicles have reached a diameter of seventeen millimeters on ultrasound, another hormone called Human Chorionic Gonadotropin is administered to initiate the final maturation of eggs. The donor is now ready for the egg retrieval process. She is asked to come in one hour prior to the scheduled egg retrieval. The woman puts on a hospital gown while tranquilizers and antibiotics are given .....

.... swirls in over the sea surface, it soaks up more and more water vapour. At the storm center, this new supply of water vapor gets pulled into the thunderhead updrafts, releasing still more energy as the water vapor condenses. This makes the updrafts rise faster, pulling in even larger amounts of air and water vapor from the storm's edges. And as the updrafts speed up, air swirls faster and faster around the storm center. The storm clouds, moving with the swirling air, form a coil. In a few days the hurricane will have grown greatly in size and power. The swirling shape of the winds of the hurricane is shaped like a dough-nut. At the .....