.... of bodies that are acted on by mechanical disturbances. Since such behavior is involved in virtually all the situations that confront an engineer, mechanics lie at the core of much engineering analysis. In fact, no physical science plays a greater role in engineering than does mechanics, and it is the oldest of all physical sciences. The writings of Archimedes covering bouyancy and the lever were recorded before 200 B.C. Our modern knowledge of gravity and motion was established by Isaac Newton (1642-1727). Mechanics can be divided into two parts: (1) Statics, which relate to bodies at rest, and (2) dynamics, which deal with bodies in .....

.... landfill Similar categories are used in many other parts of the world. In practice, these categories are not clear-cut. The Draft Directive recognises variants, such as mono-disposal - where only a single waste type (which may or may not be hazardous) is deposited - and joint-disposal - where municipal and hazardous wastes may be co-deposited in order to gain benefit from municipal waste decomposition processes. The landfilling of hazardous wastes is a contentious issue and one on which there is not international consensus. Further complications arise from the difficulty of classifying wastes accurately, particularly the distinction b .....

.... to heroin or cocaine. When a person smokes a cigarette the body reacts immediately to the chemical nicotine. Nicotine begins to effect a smoker’s blood pressure, the flow of blood from their heart, the heart beat and breathing rate. Cigarette smoke also contains carbon monoxide, the same poisonous gases released from a car exhaust pipe. Carbon monoxide is a colorless and odorless, highly toxic gas that reduces the amount of oxygen that the blood can carry. Combined with the effects produced by the nicotine, it creates an imbalance in the demand for oxygen by the cells and the amount of oxygen the blood is able to supply. .....

.... and volume and temperature has Celsius, which is much easier to read than Fahrenheit. Fahrenheit is hard for many people to understand and translate because it is not read in increments of one. Instead it is read having thirty-two degrees Fahrenheit being zero and two hundred and twelve degrees being the boiling point, While the Celsius (metric unit of measure for temperature) is read with one degrees Celsius being the freezing point of water, and one hundred degrees Celsius being the boiling point. I think that should be used everywhere in the world because it would make all measurements universal and understandable. I think that th .....

.... and eventually placed in mental hospital facilities because of their apparent vegetative state. Doctors who worked on the earlier cases believed the patients mental faculties to have been destroyed by the illness. Dr. Sayer (Dr. Oliver Sacks in real life) discovers that certain vegetative patients reacted to outside stimuli, such as a pattern on a floor, a tossed ball, or a television with a maladjusted vertical hold. Finally, Dr. Sayer comes across Leonard as a middle-aged man, some thirty years after he was originally afflicted with the disease. After doing some tests, the doctor comes to realize that there is brain activity an .....

.... defects, including cardiac anomalies, hemangiomas, and eye and ear anomalies. [2,4,15,16] Even in the absence of growth retardation or congenital abnormalities, children born to women who drank alcohol excessively during pregnancy appear to be at increased risk for attention deficit disorders with hyperactivity, fine-motor impairment, and clumsiness as well as more subtle delays in motor performance and speech disorders. [4] These findings have been referred to as fetal alcohol effects (FAE). As recently described, FAS and FAE produce profound cognitive, behavioral, and psychosocial problems that persist to date of follow-up of those affec .....

.... who wants to be anyone “must have” whatever is cool at the time. This usually means the biggest, meanest, least efficient car or the fanciest toys, generally leading to wasteful packaging and harmful chemicals or other bad stuff. “In short, Impact = Population * Affluence * Technology.” (Ehrlich, 1990) The problem is that everyone cares too much about societies image of them that they don’t think about the results of their actions. We also have a problem with the consumption of our resources. Many of the resources that we rely like fossil fuels, forests, and water are non-renewable. We are rapidly depleti .....

.... with the flow of lymphatic fluid away from these tissues. The most frequently affected part is the leg. The most common cause of lymphatic obstruction is filaries. Filaries is caused chiefly by the species Wuchereria. When you have wherever it is located your skin will become rough and thickened like the skin of an elephant. Over 1 billion people in 73 countries are at risk of getting elephantiasis, and there are over 120 million people who already have it. New research has determined that albendazole, which has already become a standard treatment to fight intestinal parasites, is 99 percent effective against the para .....

.... is between-species evolution of genes and microevolution is within-species evolution of genes. There are various kinds of dynamics of macroevolution. Punctuated equilibrium theory proposes that once species have originated, and adapted to the new ecological niches in which they find themselves, they tend to stay pretty much as they are for the rest of their existence. Phyletic gradualism suggests that species continue to adapt to new challenges over the course of their history. Species selection and species sorting theories claim that there are macroevolutionary processes going on that make it more or less likely that certain spe .....

.... when he wanted to talk to another friend of his he needed to use another line to connect his phone and the phone of his friend . So imagine that he has X friends , he would need X(X-1)/2 lines and X-1 phones , that was impossible so the need of networks come up . The network first developed for the need of the voice communication but after the appearance of data communications need the same network was used . From the time that electricity and electronics had developed there was rapidly changes at the section of the communications . After the decade of the 1950 the computers started developing , and the communications started playing .....