.... Tin had been used for many things but tins use is dropping rapidly although tin is still used a lot for plating. Plating such things as electical contacts. Tin is also used as a protective coating. This protective coating can be as small as 15/1,000,000 of an inch. This protective coating protects against rust on steel and other metals. A coating of tin also gives a great look to plain old steel. Tin cans for food prevents weak acids from damaging the inside of the can. Not many cans are made of tin since aluminum started to be used for cans tins use dropped sharply. Tin is .....

.... their host populations while others exhibit low virulence? The two prime factors most frequently cited (Esch and Fernandez 1993, Toft et al. 1991) are evolutionary history and mode of transmission. Incongruently evolved parasite-host associations are characterized by high virulence, while congruent evolution may result in reduced virulence (Toft et al. 1991). Parasites transmitted vertically (from parent to offspring) tend to be less virulent than parasites transmitted horizontally (between unrelated individuals of the same or different species). Studies in which virulence i .....

.... Internet as well. "Hackers," the computer wizards who use their knowledge for evil, are rampant on the Internet. Sometimes they do seemingly harmless acts, such as just going into a computer system and observing, but at other times, they steal, destroy or alter data. On some occasions, these cyber-felons perform even more malicious acts, such as infecting systems with "viruses," computer programs that "infect" the systems by latching onto other programs and eventually destroying them. Another favorite activity of the hacker is to gain access to the computer system and then manually either de .....

.... per hour, another dead species every 6 minutes. We're trashing the planet, washing away the topsoil, paving over our farmlands, systematically deforesting our wildernesses, decimating the biota, and ultimately killing ourselves. The world is getting progressively poorer, and it's all because of populating, or more precisely, over-population. There's a finite store of resources on our pale blue dot, spaceship Earth, our small and fragile tiny planet, and we're fast apporaching it's ultimate carrying capacity. The limits to growth are finally upon us, and we're living on borrowed time. The law .....

.... the West. By 1345 it had made it’s way to the lower Volga River. By early 1347 it was in Constantinople. It hit Alexandria in the autumn of that year, and by spring 1348, a thousand people a day were dying there. In Cairo, Egypt, the count was seven times that. The disease traveled by ship as readily as by land and it was no sooner in the eastern Mediterranean than it was in the western end as well. Already in 1347, the plague had hit Sicily. By winter the plague had reached mainland Italy. By January of 1348, the plague was in Marseilles, and it reached Paris in the spring of 1 .....

.... two miles per hour. Now we would all assume that the car would come to a stop sometime. We assume this because it is true. It is true because there is friction between the tires and the road. The car now has inertia in uniform motion. Since there is friction, the car cannot keep moving forever because friction is an unbalanced force acting upon the tires. What if there was not any friction? The car would keep going forever. That is if there was not any wind or a hill or any unbalanced force acting upon the car. This is rather weird just to think about. Because this usually would not .....

.... media, after calculations, produced fewer cells than that of the control, these were: Chloramphenicol producing 89,3 01 cells/ml; glucose producing 411,951 cells/mL; lactose producing 477,441 cells/mL and finally pH 6.0 producing 579,557cells/mL. The remaining four media, after calculations, produced cell counts greater than the control: 2X with 1,087,009 cells/mL; 0.5X with 2,205,026 cells/mL; pH 8 with 3,583,750 cells/mL and finally pH 7.0 with 8,090,325 cells/mL. From these results the conclusion can be made that the environment is a controlling factor in the growth dynamics of E. co .....

.... on the planet earth. Dioxins are also produced whenever chlorine containing substances, such as PVC, are burned. Life as we know it will change, if a Greenpeace campaign is successful. The powerful environmental group has mounted a well-organized campaign that has as its objective nothing less than a total, worldwide ban on chlorine. With the public health and billions of dollars at stake, the debate over chlorine has become one of the world's most contentious and controversial issues. "Is a chlorine-free future possible?" asked Bonnie Rice, a spokesperson for Greenpeace's Chlorine Fr .....

.... Epididymitis. Long term complications in women include Pelvic Inflammatory Disease, ectopic pregnancy, perihepatitis, sterility can be transmitted to newborns. Approximately 2% of persons with untreated may develop Disseminated Gonococcal Infection (DGI). This develops into a fever, skin lesions and arthritis type pain. is treated with antibiotic drugs taken orally or by an injection. All partners must be treated. Treatment during the early stages is usually 100 percent effective. It is important that all of the antibiotics are taken as prescribed, and that the infected people refrain .....

.... change is inevitable. The question is not whether climate will change in response to human activities, but rather where (regional pattern), when (the rate of change) and by how much (magnitude). (17,18). Alarming information and trends are leading the scientific community in this same belief. The concept of is predicting detrimental events for the future. The most prevalent issue of is the increase in overall world temperature. In the thirty year time period of 1951-1980, a 0.4C temperature increase has been documented (Hansen 36). Michael D. Lemonick predicts that unless the .....