Essays on Science

... they were conversant with their transmutation, employing quicksilver in the process of separating gold and silver from the native matrix. The resulting oxide was supposed to possess marvelous powers, and it was thought that there resided within in the individualities of the various metals, that in it their various substances were incorporated. This black powder was mystically identified with the underworld form of the god Osiris, and consequently was credited with magical properties. Thus there grew up in Egypt the belief that magical powers existed in fluxes and alloys. Probably such a belief existed throughout Europe in connection with the bronze-working castes o ...

... tackle general biomedical issues and convey the information to an audience that, for the most part, lack a high level of scientific knowledge. To make the information more understandable for the target audience, authors substitute in less complex vocabulary words, summarize difficult concepts, and often utilize attractive visual aids. Authors strive to communicate issues to audiences of varying levels of education. In order to accomplish this effectively, authors adapt their work in a format that expresses their concepts to audiences in pragmatic fashion. However, a disadvantage is that these adaptations can lead to misinterpretations of information. Attached is a ...

... down the pockets of the clean technology indu-stry. Moreover the deadlines for plants to meet EU-directives are getting close, and everything se-ems to show that the laws will be enforced. Yet far from all companies have to meet with the raised finger of the law to start investing in their environmental responsibilities. Investments on a volunta-ry basis are often due to the fact that it makes good ecnomic sense or because it gives the corporate image a face- lifting. Seen from a geoprahical point of view Germany and primarily eastern Europe form tremendously good breeding ground for the sale of clean-up equipment. As a result of opencast mi-ning of ligni ...

... needs to be banned because of the social, religious, ethical, and legal implications. The first step to understanding genetic engineering is to know the start of its creation. Genetics achieved its first foothold on the secrets of nature's evolutionary process, when an Austrian Monk named Gregor Mendel developed the basics of how genetics work. Using this, scientist studied the characteristics of organisms for the next one hundred years following Mendel's discoveries. These early studies concluded that each organism has two sets of character determinants, genes (Stableford 16). For instance, in regards to eye color, a child could receive one set of genes fr ...

... ozone and form harmful chemical bonds with ozone molecules. One example would be chlorofluorocarbons or CFC's. CFC's were commonly found in spray cans during the early 1970's but were invented in the 1920's. They contain chlorine, fluorine, and carbon atoms which all form bonds with the rare ozone molecules. A few more products with CFC's are coolants for refrigerators and air conditioners, foam products, such as cups, and insulation for houses. Considering that ozone molecules are so rare, it is extremely important to keep them intact. Without them, radiation would leak into the earth at tremendous amounts. The radiation comes in the form of UV ray ...

... percent almost twice water. Plutos environment is one of a cold desolate place.The tempeture ranges from a frigid negative two hundred twenty three to negative two hundred thirty three degrees Celsius which converts to negative three hundred sixty nine and negative three hundred eighty nine degrees farenhiet.Its extremely frigid tempetures are due to its obvious distance from the sun.Its atmosphere consists of nothing more than methane.Plutos thin atmosphere also contributes greatly to its extremely low atmospheric pressure only one hundred times weaker than that of Earth's. Its surface is made of very rocky material which is believed to be caused by the low tempet ...

... plastic, which is made from fossil fuels. Someone will either come up with a synthetic plastic or come up with something to substitute for plastic. The person who comes up with the solution will become and instant millionaire and everyone will be happy. There is one draw back of this way of solving problems, I mean sure it's great to wait until the demand but we should still learn from our mistakes. We should learn to plan ahead and see what the consequences could possibly be. We still have other demands to meet, there are three major demands of fossil fuels and they are heating, transportation, and industry. Although transportation is taken care of, we may not ...

... and Degenerative Diseases are diseases that go on for a long time or return from time to time over a long period. Usually they can not be cured but many can be helped by medical treatment. Chronic diseases are also degenerative. Such diseases gradually lead to the breakdown of tissues and organs of the body. is a Chronic Degenerative Disease. is the irreversible change in the normal liver tissue that results in the degeneration of functioning liver cells and their replacement with fibrous connective tissue. Cirrhosis can have a number of causes; the term is applied whenever the end result is scarring of the liver. The most common type of cirrhosis ...

... anywhere in Africa. It breeds on some twenty islands, from Hollams Bird Island off the coast of Namibia to Bird Island in Algoa Bay. At one time the population of the African Penguin was quite large but some man caused factors has drastically reduced their species. A long time ago the early European settlers at the Cape of Good Hope realized that penguin eggs were good for eating and over the years millions of penguin eggs have been collected greatly reducing the population of the African penguin species, and even to make things worse they started the practice of destroying any incubated eggs so that there would be fresh ones when these collectors paid ...

... fibers have a few myoblasts, which remain as satellite cells. These myoblasts retain the capacity to join with one another or with damaged muscle fibers in order to regenerate these muscle fibers. John Centore2 Dr. Jain Anatomy & Physiology The many nuclei of skeletal muscle fiber are located underneath the sarcolemma, which is the fiber’s plasma membrane. Thousands of invaginations of the sarcolemma, which are called T Tubules, Tunnel from the surface to the center of the muscle fiber. These T Tubules are open to the outside of the fiber and are filled with extra-cellular fluid. Muscle action potentials propagate along the sarcolemma and through the T ...