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Leprosy 2

... treatment of the disease, there are many questions that still remain. The following paper attempts to provide some background information on what is known about leprosy and then attempts to investigate certain aspects of the disease that are unknown. A description of the classification, mechanism of infection, transmission, distribution, and treatment of the disease will be provided. After reviewing the background material, a great deal of questions may arise as to how exactly this disease is spread from person to person and what condition ...

Number of words: 3112 | Number of pages: 12

Laziness

... greatest prevalence among Scandinavians and Northern Europeans, where it affects three percent of the population, and the least prevalence among North American Indians, with just half a percent being affected. Psoriasis seems to affect both males and females equally. There are two types of the disease. Type I generally occurs during adolescence, with an average age of onset of sixteen years for females and twenty-two years for males. Type II affects people over sixty years of age. There are several immunological abnormalities a ...

Number of words: 1951 | Number of pages: 8

The Physics Of A Crystal

... length and are all at right angles to each other. Cubic crystals are described as being isometric, but not all isometric crystals are plain cubes. If the corners of a cube are cut off, the result is a polyhedron with six octagonal faced and eight triangular ones. Aside from the isometric system, there is also; a tetragonal, orthorhombic, monoclinic, triclinic and hexagonal system. Crystals may form when a solution of a substance evaporates. Crystals may also form when a vapor or molten substance solidifies. Allotropes are different for ...

Number of words: 331 | Number of pages: 2

Depression

... disorder that affects both the young and old, rich and poor, or even successful and unsuccessful people. Although occurs most often in individual who have little education, the truth is, we all are targets. One form of that plaques our society is called major . Major is a mood disorder characterized by extreme and persistent feelings of despondency, worthlessness, and hopelessness causing impaired emotional, cognitive, behavioral, and physical functioning (Hockenbury & Hockenbury, 1998). Major affects about 12 million American a year ...

Number of words: 827 | Number of pages: 4

Chromatography

... or molecules that are dissolved in a liquid phase. If the sample solution is in contact with a second solid or liquid phase, the different solutes will interact with the other phase to differing degrees due to differences in adsorption, ionic strength, polarity or size. These differences allow the mixture components to be separated from each other by using these differences to determine the transit time of the solutes through a column. Simple liquid consists of a column with a fritted bottom that holds a stationary phase in equilibrium with ...

Number of words: 666 | Number of pages: 3

The Element: Chlorine

... times as dense as air and moderately soluble in water, forming a pale yellowish green solution. Chlorine is so reactive that it never occurs free in nature. Chemical Properties Chlorine is in the halogen family, and like all the other halogen elements chlorine has a strong tendency to gain one electron and become a chloride ion. Chlorine readily reacts with metals to form chlorides, most of which are soluble in water. Chlorine also reacts directly with many nonmetals such as sulfur, phosphorus, and other halogens. Chlorine can support ...

Number of words: 1163 | Number of pages: 5

Evaluating An Enthalpy Change That Cannot Be Measured Directly.

... out the experiment, which are given later. List of Apparatus Used. 1 x 500ml Beaker. 1 x Thermometer(-10 to 50oC). 1 x Polystyrene Cup. 1 x Weighing Balance. 1 x Weighing Bottle. 10 grams of Sodium Hydrogencarbonate. 10 grams of Sodium Carbonate. A bottle of 2 molar HCL. Diagram. Method. Three grams of sodium hydrogen carbonate was weighted out accurately using a weighting bottle and a balance. Then thirty centimetres cubed of 2 molar HCL was measured using a measuring cylinder. The acid was then placed into the polystyrene cup and its ...

Number of words: 627 | Number of pages: 3

Mimicry In Nature

... Not only that, baby widow birds are dead ringers for Estrildid finch chicks, both having the same colouration and markings. They even act and sound the same, thus ensuring that the widow bird nestlings can grow up among their alien nestmates with no risk of being rejected by their foster parents. MASTERS OF DISGUISE Things aren't always as they seem, and nowhere is this more true than in nature, where dozens of animals (and plants) spend their time masquerading as others. So clever are their disguises that you've probably never known y ...

Number of words: 1457 | Number of pages: 6

Coral Reefs 3

... and to their skeletons, particularly the skeletons of stone-like corals. Many different organisms, including molluscs, sponges, and worms, help shape reefs, but hard corals and various algae are the major architects. In effect, the corals build limestone, because their skeletons are made of Calcium Carbonate. The skeletons deposited by these corals and other organisms accumulate, along with sand and other debris, to form the backbone of the reef. Over tens of thousands of years, chemical and mechanical changes turn the reef into true rock. ...

Number of words: 3393 | Number of pages: 13

The Serious Problem Of Acid Rain

... Canada- United States border, cars and trucks are the main sources for nitric acid (about 40% of the total), while power generating plants, industrial, commercial, and residential fuel combustion together contribute most of the rest. In the air, the sulfur dioxide and nitrogen oxides can be transformed into sulfuric acid and nitric acid, and the air current can send them thousands of miles from the source. When the acids fall to the earth in any form it will have large impact on the growth or the preservation of certain wildlife. NO DEFENS ...

Number of words: 1892 | Number of pages: 7

Bacteria And Their Effects

... plants can use in a process called nitrogen fixation.Bacteria are good for recycling because they feed on dying material and convert it back into basic substances.Without decomposition the food chain would cease.Bacteria also helps in the breakdown on rocks which influences the movement of key elements,such as,sulfur,iron,phosphorus,and carbon,around the world.Bacteria are the main digesters of cellulose within cows and other animals.Bacteria are used in the making of dairy products.Without bacteria the dairy industry would not exist.Bacteri ...

Number of words: 291 | Number of pages: 2

Compatisome Of Upper And Lower Rock Shores Pools

... pool of the upper shore was exposed for longer and therefore suffered greater from variation of abiotic factors, as a result, the organisms of the upper pool had to possess special adaptations to colonise the area. The lower rock pool generally contained different species which could out compete the organisms of the upper pool when in a more benign environment. The rock pools studied should both contain organisms specially adapted to live in the intertidal environment of the rock pools. The organisms need to be adapted to the microenvironm ...

Number of words: 3210 | Number of pages: 12

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