.... would be a solution to organ limitation. One of the greatest problems in medicine today is that there has not been enough organs to go around to all of the patients that are in need of them. This in turn creates a lot of unnecessary deaths, and problems for patients. Currently in the U.S. only 2,300 of 40,000 Americans who needed a new heart received one. That means close to 94% of the patients did not receive one and this is only one organ in one country that were talking about. Statistics show that nearly one third of the patients on the waiting list for organs will die and even if they do receive an organ the human body has the tendency to reject organs which can caus ....

.... an unstoppable killer. The looming threat of incurable S. aureus is just the latest twist in an international public health nightmare: increasing bacterial resistance to many antibiotics that once cured bacterial diseases readily. Ever since antibiotics became widely available in the 1940s, they have been hailed as miracle drugs -- magic bullets able to eliminate bacteria without doing much harm to the cells of treated individuals. Yet with each passing decade, bacteria that defy not only single but multiple antibiotics -- and therefore are extremely difficult to control -- have become increasingly common. What is more, strains of at least three bacterial species capable o ....

.... concrete and cement interchangeably, but they're not. Concrete is to cement as a cake is to flour. Concrete is a mixture of ingredients that includes cement but contains other ingredients also (Day 6- 7). Portland cement is produced by pulverizing clinker consisting essentially of hydraulic calcium silicates along with some calcium aluminates and calcium aluminoferrites and usually containing one or more forms of calcium sulfate (gypsum) 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 ar ....

.... reactions occur when a proton is accelerated and collides with another proton and then the two protons fuse, forming a deuterium nucleus which has a proton, neutrino and lots of energy. I have no idea what a deuterium nucleus is, but is must be 10 times cooler than just a regular nucleus. Such a reaction is not self sustaining because the released energy is not readily imparted to other nuclei. thermonuclear fusion of deuterium and tritium will produce a helium nucleus and an energetic neutron that can help sustain further fusion. This is the basic principal of the hydrogen bomb which employs a brief, controlled thermonuclear fusion reaction. This was also how ....

.... of four movements in four given directions over 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 re ....

.... which allowed its body to pivot at its hip (Wilford 142). With its body balanced right, the Tyrannosaurus walked on two legs, and it had two very short arms. The Tyrannosaurus was one of the most feared dinosaurs. The word Tyrannosaurus means “tyrant reptile”. Since the Tyrannosaurus Rex was a meat-eater, its teeth were shaped in zig-zag form which allowed it to cut through meat like a steak knife (Benton 161). It mainly relied on its strength when catching prey. Because it could not swim, many of its prey would run for shelter into water. Also, the Tyrannosaurus Rex was able to take big breaths due to lots of lung capacity, but it tired easily and could ....

.... with high levels of fluorine in their drinking water suffered less dental cavities. Further testing concluded that at least 1.0 parts per million of fluorine could help to prevent cavities, but more than 1.5 PPM would cause mottled tooth, so basically a little fluorine would be okay but a lot of fluorine would be bad (Behrman 182). In 1938, with this information, Dr. Gerald Cox of the Mellon Institute began to promote the addition of fluoride to public water systems, claiming that it would reduce tooth decay, however there were two major obstacles in his path, The American Medical Association, and The American Dental Association. Both associations wrote articles ....

.... it has a very distinct look to it as well as a specific habitat. It has many related species and it’s geographic distribution is extremely wide and varied. The Aedes aegypti, with regard to both sexes, are generally similar in coloration (Womack 1993). The female adult is noticed by it’s small dark figure that is colored by white markings and banded legs. Its proboscis or snout is mostly black with regard to the white palp tips (Russel 1996). The dorsal pattern of white scales on the scutum is in the shape of a ‘lyre’ with two central based stripes that contrast with the dark scales present on the insect (Womack 1993, Russel 1996). Its wings are dar ....