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» Science Essays and Papers
Male Pattern Baldness
<view this essay>.... at the temples. Never the less, the condition is more of a psychological problem than a medical.
The condition androgenic alopecia is the result of the androgen on the hair follicles that have genetic receptor sites, in other words is resulted by the presence of endocrine hormones (like testosterone) on the hair follicle (which is where the hair is produced) that have genetic receptor sites.
usually is a symmetrical disease, so if there is a non-symmetrical area of baldness, it is not the cause of androgenic alopecia. The typical pattern begins of occur at the hairline, then over time forms an “M”. The crown also begins to become thinner, as .....
Number of words: 324 | Number of pages: 2 |
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Nuclear Waste Disposal At Yucca Mountain: Right Or Wrong?
<view this essay>.... high-level waste management program
at $25-35 billion. Completing the scientific investigation and licensing of the
Yucca Mountain site is expected to cost $6-7 billion alone. At the end of 1993,
total nuclear waste fund expenditures through the end of the year were nearly
3.7 billion. Very little of this money comes from individual investors. If a
retrievable facility (one where the casks of spent fuel can be retrieved later)
is built, this will be a good deal more. Other disposal types, such as sub-
seabed and space disposal may prove to be cheaper at a later time.
This is a cause for concern, but there are a greater amount of reasons
to further and ev .....
Number of words: 976 | Number of pages: 4 |
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Mosquitoes
<view this essay>.... eggs hatch within 48 hours. The larvae swim in the water and use siphon tubes to breath while floating near the water surface. After feeding on micro-organisms and growing larger, they shed their skin four times and evolve into the pupa stage.
The pupa stage of development is a time when the young mosquito does not feed. After about two days the pupa evolves into an adult mosquito. The new adult mosquito escapes from the pupae skin be splitting the skin open and resting at the water surface to allow its' body parts to harden. can complete the entire egg to adult cycle in 10 to 14 days, depending on the temperature, with shorter times during warmer periods. .....
Number of words: 316 | Number of pages: 2 |
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Human Evolution
<view this essay>.... together in the
family Hominidae because of genetic similarities, although classification
systems more commonly still place great apes in a separate family, Pongidae. If
the single grouping, Hominidae, is used, the separate human line in the hominid
family is distinguished by being placed in a subfamily, Homininae, whose members
are then called hominines—the practice that is followed in this article. An
examination of the fossil record of the hominines reveals several biological and
behavioral trends characteristic of the hominine subfamily.
Bipedalism Two-legged walking, or bipedalism, seems to be one of the earliest of
the major hominine characteristics t .....
Number of words: 2656 | Number of pages: 10 |
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Atom And Qi
<view this essay>.... ¡¥spirituality¡¦. The historical progression towards a belief in atoms promoted the deduction of atoms throughout centuries. Nowadays, the atom is universally believed by people to exist as the result of scientific evidence. In contrast, ¡¥qi¡¦ is not believed to be a scientific phenomena and is considered a religious or superstitious belief. As a result, in order to demonstrate the existence of ¡¥qi¡¦ and make it conceivable by modern physicists, the use of the scientific method becomes the qi researchers¡¦ best tool. In addition, while qi and the atom were both conceived by ancient philosophers, the notion of the atom was better developed by scientists .....
Number of words: 2055 | Number of pages: 8 |
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Bridging Technology And Academ
<view this essay>.... for us. The primary objectives of this paper are to present the potential of technology to faculty just beginning to consider it, as well as open a dialogue with colleagues regarding its utility as a research tool and a heuristic device in the sociology classroom. Three specific questions guide the discussion: 1) Why should sociologists concern themselves with the Internet?; 2) What are the various Internet technologies available to sociologists?, and; 3) How can faculty begin to integrate these technologies into their classrooms and research.
Key words: teaching sociology, information technology, on-line teaching
Introduction
Information technology i .....
Number of words: 4303 | Number of pages: 16 |
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Internet Security
<view this essay>.... of the hackers? In my opinion, the responsibility belongs to them all. Security on the Internet is a very important issue in the world today. Billions of people have an on-ramp to the Information Superhighway, and more are finding one every day. The Internet transcends geographical locations, and is the first example of a true global village. Unfortunately for regular users of the Internet, much like the real world, criminals exist on the 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 a .....
Number of words: 4156 | Number of pages: 16 |
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Lasers And Their Applications
<view this essay>.... is what amplifies light. Since light is a wave it has a frequency calculated by the equation:
= c/f
where f is the frequency c is the speed of light which is equal to 3.00 x 108 m/s and is the wave length of light. Also waves have crests, the high points of waves, and troughs, the low points. Constructive interference occurs when two waves of the same frequency meet at a crest or trough therefore combining to form a wave that has an amplitude equal to the sum of the individual amplitudes of the original waves. Stimulated emission is the process that the laser works on, which was first proposed by Albert Einstein in 1917. When a sufficient number .....
Number of words: 1998 | Number of pages: 8 |
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