... a distance of at least 6 inches. Power and weight restrictions were applied to ensure the safety of the students and, more importantly, the teacher. As the goals of the project were made clearer, our group began discussing possible ideas for the design. There were some disagreements about whether we should take the electromechanical route or the purely electrical one. And after some deep thought, we all agreed that the mechanical way would be the simplest to build and the most merciful on our pocketbooks. Even though we were coming up with some good ideas, each design seemed to contain some major problems. One of the reoccurring problems dealt with the synchr ...

... about what should be done, they simply mock the existing methods. Some people think that by fixing one problem we are undoubtedly creating another one. One writer uses the analogy of a “mixing bowl” to describe the earth. This “mixing bowl” that is our earth is constantly being manipulated to create the perfectly balanced “mixture” (Huber). Since there will never be a perfect balance or “mixture”, what is the point of even trying? Maybe they are right in saying that we will never find the perfect mixture, but this negative attitude is part of the problem. Nothing will be accomplished unless we reject apathy and negativity. One writer, T.H. Watkins, has crit ...

... memory of the patient. They are loated outside and around neurons as dense de- posits of an amyloid protein. According to researchers, amloid is a cause of Alzheimer. Even thougt there is no cure for AD, it exist a number of treat- Ment. If you suspect a patient of AD, ask him an attention question, like, “why people who lives in glasses houses shouldnt throw rocks.” If he fails to answer, he might have Alzheimer disease and should be refered to a treatment.. There is 3 stages in AD. Mild: the patient might have trouble finding his words r forget familiar names. Moderate: he will be desoriented, paranoid and/or desoriented. He will also become urine-incontinen ...

... Dmitrii Ivanovich Mendelev had predicted a few years earlier for eka-aluminium, the then undiscovered element lying between aluminum and indium in his periodic table. Though widely distributed at the Earth's surface, gallium does not occor free or concentrated in independant minerals, except for gallite. It is extracted as a by-product from zinc blende, iron pyrites, bauxite, and germanite. Silvery white and soft enough to be cut with a knife, gallium takes on a bluish tinge because of superficial oxidation. Unusual for its low melting point ( about 30 degrees C, 86 degrees F ), gallium also expands upon solidification and supercools readily, remaining a liqu ...

... Dr. K.Mullis recently received the Nobel prize for inventing the technique. This is how they go about doing this: They first get their small DNA sample. Then they mix all the chemicals (this includes the primer, etc). Then they have to run it through the PCR machine. Here is a (rather detailed) description of the process: "The cycling protocol consisted of 25-30 cycles of three- temperatures: strand denaturation at 95degC, primer annealing at 55degC, and primer extension at 72deg C, typically 30 seconds, 30 seconds, and 60 seconds for the DNA Thermal Cycler and 4 seconds, 10 seconds, and 60 seconds for the Thermal Cycler 9600, respectiv ...

... short tons, Utah with 187,000 short tons, New Mexico with 161,000 short tons. Some other leading countries are Chile with 1,422,000 short tons, United States with 1,203,000 short tons, Soviet Union with 650,000 short tons, and Zambia with 596,000 short tons. When copper is being mined, both Native copper and copper ore are usually found. The highest grade of copper ore is pale silvery gray. Miners used to be always in danger in copper mines. Today, we have reduced a fair amount of these hazards. Miners wear hats made of iron or very hard plastic. This is to protect them from falling rocks. Lamps are also attached to these helmets in case some of the lighting in t ...

... fungi and parasites. The most dangerous of these forms is the virus. Some viruses, such as the common flu, are considered to have a fairly detrimental capacity. The flu can incapacitate a human for several weeks with various symptoms such as bodily soreness, fever, bronchial complications, and even pneumonia. But while these conditions can be painful and frightening, we are usually confident that proper medication and rest will take care of the matter. However there is a much more severe and indiscriminate tyrant, with enormous corrupting influence, capable of infiltrating all of civilization. Scientifically, it is a submicroscopic pathogen consisting of a pa ...

... writer. Decades ago Konrad Lorenz, a famed Austrian naturalist, made detailed studies of Greylags and afterwards showed no hesitation in using words like love, grief and even embarrassment to describe the behavior of these large, social birds. At the same time he did not forget that all romance - animal and human - is tied intimately to natural selection. Natural selection brought on the evolution of males and females during prehistoric epochs when environmental change was making life difficult for single-sex species such as bacteria and algae. Generally, these reproduced by splitting into identical copies of themselves. New generations were thus no better ...

... women, most of them over the age of sixty, carry implanted that take over the duties of the natural conduction system. Tens of thousands of these devices are implanted each year in this country alone. Over the past thirty years have evolved from simple devices only capable of fixed-rate stimulation of a single chamber of the heart to more sophisticated "implanted computers" that medical personnel can interrogate and reprogram from outside the patient's body. These refinements have allowed for more physiologic pacing with maintenance of atrioventricular synchrony and cardiac output. There are various types of available today that can be surgically implanted t ...

... Between us on earth and outer space the atmosphere interposes innumerable obstacles in the form of molecules of air, tiny droplets of water, and small particles of dust. These are represented by the columns of the pier. The waves of the sea represent the sunlight. We know that the sunlight is a blend of lights of many colors - as we can prove for ourselves by passing it through a prism, or even through a jug of water, or as Nature demonstrates to us when she passes it through the raindrops of a summer shower and produces a rainbow. We also know that light consists of waves, and that the different colors of light are produced by waves of different lengths, red ...