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Help With Science Papers
Turner Syndrome
... became clear the syndrome was due to lack of sex chromosome
material. Turner's Syndrome is a rare chromosomal disorder that affects
one in approximately 2,500 females. Females normally have two X-
chromosomes. However, in those with Turner's Syndrome, one X chromosome is
absent or is damaged.
OTHER NAMES Depending on the doctor, Turner's Syndrome may be diagnosed
with one of the following alternative names: 45 - X Syndrome, Bonnevie-
Ulrich Syndrome, Chromosome X, Monosomy X, Morgagni-Turner-Albright
Syndrome, Ovarian Dwarfism, Turner Type, among others.
SYNDROME CHARACTERISTICS A reduced growth in height is the c ...
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History And Development Of The Internet
... Baran, working for the U.S. Air Force, developed a network that could reroute itself around damage caused by the impact of an Intercontinental Ballistic Missile by using "redundancy of connectivity". This meant that in the event of a break in the network the server would re-route the information in an alternate path through a new technique called "packet switching". Packet Switching is a means of breaking up the message being sent into small packets which carry enough information to seek out its destination and sending them out separately towards the destination server. The message after being broken up would t ...
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Condor
... Typically, an adult pair lays one egg every other year, with the fledgling being dependent upon its parents through the next breeding season.
Like all vultures, s are carrion-eaters. They prefer large dead animals like deer, cattle, and sheep, but will also eat rodents and more rarely, fish. If a meal has been particularly big, they may have to spend hours on the ground or a low branch before they can take off again. s are fastidious birds -- after eating, they clean their heads and necks by rubbing them on grass, rocks, or tree branches. s also bathe frequently and spend hours preening and drying their feathe ...
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Mein Ghetto: Black Racism And Louis Farrakhan
... to blacks when hiring). However, more radical attitudes towards Whites by Black North Americans have developed, primarily during this century, in response to, and as an off-shoot of, the civil rights movement and the emergence of groups such as the Black Panthers and the Nation of Islam.
Louis Farrakhan is a leader of a group of extremist. An African-American "preacher", he has founded his own movement of black radicalism, based on Islamic fundamentalism, and incorporating his own brand of hatred against whites and other racial or religious or special interest groups.
This essay will examine some of the events that ...
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Darwinism
... out how things work. He was especially interested in the outdoors. He was a very smart child, but his father, Robert Waring Darwin II, didn't think so. "Darwin had a youth unmarked by the slightest trace of genius." (Rachels,7). This didn't stop Darwin, though. He never lost this curiosity throughout the years. At the age of 18, he made a very important discovery about flustra, which is "1. That the ova of the Flustra possess organs of motion and 2. That the small black globular body hithero mistaken for the young Fucus lorious is in reality the ovum of the Pontobdella Muricata." (Rachels,7).
In the early 1800's ...
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Deforestation Of The Pacific Northwest
... serious condition of being endangered. Also, the bill forbids
federal agencies to fund or carry out any activity that would threaten the
species or its' habitat. It is the latter part of the bill that causes the
controversy. Under the ESA, loggers should not be allowed to cut down the old-
growth of the forest. The old growth of a forest includes the largest and
oldest trees, living or dead. In the case of the North Coast forests, this
includes some thousand-year-old stands with heights above three-hundred feet and
diameters of more than ten feet.
In 1990, the number of spotted owls dropped to 2000 breeding p ...
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Kevlar
... in after spinning. This required chain disentanglement and orientation in the solid phase of it. Therefore the strength and modulus levels were far lower than theoretically possible values.
In 1965, scientists at Du Pont discovered a new method of producing an almost perfect polymer chain extension. The polymer poly-p-benzamide was found to form liquid crystalline solutions due to the repetitiveness of its molecular backbone. The key for the structural requirement for the backbone is para orientation on the benzene ring, which allowed for rod-like molecular structures. This technology was used when Du Pont r ...
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Fusion 2
... atoms beyond the temperature at which electrons are knocked out of the atoms. The result is an ionized gas consisting of free negative electrons and positive nuclei. This gas constitutes a plasma.
Plasma, in physics, is an electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. It is sometimes referred to as the fourth state of matter, distinct from the solid, liquid, and gaseous states. When energy is continuously applied to a solid, it first melts, then it vaporizes, and finally electrons are r ...
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History Of The Cell Theory
... of
microscopes. Leeuwenhoek born in Delft, Holland and had little or no scientific
education. Leeuwenhoek also confirmed the discovery of capillary systems.
Theodor Schwann a German physiologist born in Neuss and educated at the
universities of Bonn, Wurzburg, and Berlin, Schwann was involved in the study of
the structure of plant and animal tissues. Along with Matthias Jakob Schleiden
a German botanist, Schwann proposed the cell theory.
The cell theory has three parts:
1. All organisms are composed of cells.
2. Cells are the basic units of structure and function in organisms
3. All cells come from p ...
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Black Holes
... 83 mi) times the
mass of the body in solar units (the mass of the body divided by the mass
of the sun). If a body is electrically charged or rotating,
Schwarzschild's results are modified. An "ergosphere" forms outside the
horizon, within which matter is forced to rotate with the black hole; in
principle, energy can be emitted from the ergosphere.
According to general relativity, gravitation severely modifies
space and time near a black hole. As the horizon is approached from
outside, time slows down relative to that of distant observers, stopping
completely on the horizon. Once a body has contracted with ...
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