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ADHD On Child Intelligence

... with academic underachievement becoming a common correlate. Since these children do not meet the expectations of society and their learning environment they are usually met with anger, punishment, and rejection. In turn these children develop a low-self esteem and low levels of motivation (Morgan, 1997). The etiology of ADHD is still a mystery to researchers. Within the field there are many correlates to biological (genetic) and social causes. The present paper seeks to explore current research through investigating the social ...

Number of words: 2216 | Number of pages: 9

Stars

... used by the Chinese, starting hundreds of years earlier, about 1000 BC. Polaris, the North Star, has a Greek name; Betelgeuse, a bright red star, has an Arabic name. Modern astronomers designate the bright stars according to the CONSTELLATIONS they are in. Thus, the brightest star in the Big Dipper (part of the constellation Ursa Major) is called alpha Ursa Majoris. Polaris, in the Little Dipper (Ursa Minor), is gamma (designated by the Greek lower-case letter gamma) Ursa Minoris, and Betelgeuse, in Orion, is gamma Orionis. VARIABLE STARS (t ...

Number of words: 3925 | Number of pages: 15

Microbiology

... Stain C. Structure 1. DNA 2. Plasmids 3. Pili/Flagellum 4. Ribosomes 5. Endospores D. Physiology 1. Photosynthesis 2. Pigments 3. Sulfur 4. Chemolithotrophy E. Other Microscopic Organisms 1. Archaebacteria 2. Rickettsiae Microbiology What is Microbiology? Microbiology is the study of microorganisms. This includes protozoans, algae, fungi, bacteria, viruses, and rickettsiae. A microbiologist is a scientist who studies life forms that can only be observed by means of a microscope. Microbiologists use many criter ...

Number of words: 2025 | Number of pages: 8

Mercury

... rotation is 58.7 days, or two-thirds of its period of revolution. That means that Mercury has one and one-half days in it’s year. Mercury doesn’t have an atmosphere, but it does have a thin layer of helium. The helium is actually solar wind that is trapped by Mercury’s weak gravity. Scientists think that collisions with protoplanets early in the history of the solar system may have stripped away lighter materials, making Mercury a very dense planet with an iron core extending outwards 4/5 of the way to the surface. Mercury bares a ...

Number of words: 447 | Number of pages: 2

Mountain Gorillas

... has large canines and he may weigh 400 pounds. He is the one who decides when to proceed, and when to stop, and which direction to go. When he sleeps, everyone else is supposed to be sleeping to, and then he gives a signal to wake up. When the old silverback gets too old, then his eldest son usually is the one to take over. The females are usually responsible for the nursing portion in the unit. Gorillas are peaceful and tolerant by nature. Whenever two groups meet, they either ignore each other, or they give each other a grumpy grunt ...

Number of words: 554 | Number of pages: 3

Mechanics: Statics And Dynamics

... VII. Torsional Loading: Shafts, Couplings, and Keys........19 VIII. Conclusion............................................20 BIBLIOGRAPHY.........................................................21 INTRODUCTION Mechanics is the physical science concerned with the dynamic behavior 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 greate ...

Number of words: 1552 | Number of pages: 6

Hydroelectricity

... though the cost of fuel for a steam-powered generating plant is higher than the cost of running a hydroelectric plant. However, increasing environmental concerns are focusing attention on renewable energy sources. Hydroelectric power generation was made more efficient by the establishment of the Federal Power Commission in 1920. Although additional hydroelectric plants were being built, the simultaneous development of larger and more cost-efficient steam-power plants made it obvious that only very large and costly hydroelectric installatio ...

Number of words: 506 | Number of pages: 2

Define A Concept : Astrology

... to modern belief, the Three Wise Men in the Bible were Astrologers. In ancient times, the Greeks and Romans based their system of gods on what they believed was up in the sky. Zeus and the other gods and goddesses were based on the planets that were visible to the people of that time. Astrology was also popular in Babylon, Egypt, the Middle East, and China. Modern Astrology has changed as new planets have been discovered. Astrology is about the interaction between the planets, including the Sun and the Moon, and the Star Signs. It studies th ...

Number of words: 552 | Number of pages: 3

Ensuring Our Future Through Conservation

... similar to the rainforests of the past. The rainforests of today still contain all of the same vegetation, animal life, and animal species as they did in the past. However, the size of theses majestic rainforests has diminished immensely over a course of about 100 years. Recent studies and estimates conclude that around two percent of the world's rainforests is lost each year. Unless we change this amount of deforestation, there will be little of our rainforests left in 50 years. Our rainforests are an integral part in our world's ...

Number of words: 1001 | Number of pages: 4

Ebola Virus 4

... in Southeast Asia indicated that Ebola virus is a prevalent cause of infection among macaques (Manson 1989). These threadlike polymorphic viruses are highly variable in length apparently owing to concatemerization. However, the average length of an infectious virion appears to be 920 nm. The virions are 80 nm in diameter with a helical nucleocapsid, a membrane made of 10 nm projections, and host cell membrane. They contain a unique single-stranded molecule of noninfectious (negative sense ) RNA. The virus is composed of 7 polypeptides, a nuc ...

Number of words: 2184 | Number of pages: 8

Mononucleosis

... the body for life after infection, usually kept under control by a healthy immune system. Almost anyone at any age can get . Seventy to 80 percent of all documented cases, however, involve persons between the ages of 15 and 30. Both men and women are affected, but studies suggest that the disease occurs slightly more often in men than in women. Doctors estimate that each year 50 out of every 100,000 Americans have symptoms. Among college students, the rate is several times higher. does not occur in any particular "season," although authori ...

Number of words: 1880 | Number of pages: 7

Aerosol Spray Cans

... for an ever increasing range of products including paints, insecticides, and shaving cream to name a few. The can is filled with the product to be sprayed and the propellant, a compressed gas such as butane or Freon. The gas is partly liquefied by the pressure in the can, but there is a layer of free gas above the liquid. As the can empties liquefied gas vaporizes to fill the space. The valve is normal held shut by the pressure in the can, and by the coil spring directly below the valve stem. When the push button is pressed, it forces the val ...

Number of words: 583 | Number of pages: 3

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