Trabajos

Artículo De Biología.
Wednesday, October 8, 2008
Class 04/09/08 "Physical principles"

Each bone is a firm structure despite its light weight. The general Constitution of the bone is the bone tissue. While not all bones are equal in size and consistency, on average, its chemical composition is 25% of water, 45% of minerals like phosphate and calcium carbonate and 30% of organic matter, mainlycollagen and other proteins. Thus, inorganic components reach approximately 2/3 of the bone weight (and only 35% is organic).

Minerals of the bones are not inert components or remain fixed but that they are constantly exchanged and replaced together with the organic components in a process called bone remodeling.
His training and maintenance is regulated by hormones and food eaten, troopvitamins vital for proper operation.
However, not all parts of the body have this type of fabric, like the penis, ears, sinuses and nose.

It is a tissue very consistent, resistant to shock and pressures, but also elastic, protects vital organs such as the heart, lungs, brain, etc., also allows movement in parts of the body to carry out work or activities by establishing the displacement of theperson. Form the locomotor apparatus causing bone structure or skeleton. It is also a repository of storage of calcium and phosphorus in the body.

Artículo De Biología.
Class 09/18/08

"The cell: unity and biodiversity"
The cell is the smallest functional and structural unit of the living organism. It is a biological unit capable of performing basic vital functions grows and divides. It alsopresents all the characteristics of a living system.
At the same time have principles that only the normal cells can fulfill them unlike cancer cells. The differences between these cells are as follows:

NORMAL CELL
• Independent and interdependent.
• It has a controlled age to reproduce
• Respond to an order in an organized way

CELL CANCERIGENA
• Is dependent and is single.
• Reproduceout of control.
• Does not take orders, but reproduces following their own commands.

The documentary videos seen on the breast, I can say the following:
That the structure of the breast is made up of glands, areolas, of 20 to 25 lobes, within these, the lobules and within these lobules, small packages of milk, which in turn are two structures, blood vessels and lymphatic vessels.
When thesestructures are damaged and are expressed by lumps (lumps) within it is advisable to take a mammogram will be discard a breast cancer, through the biopsy.
Artículo De Cálculo.
The invention of the calculus.
In the year 1684, German diplomat and Professor Gottfried Wilhelm Leibniz published a mathematical work in the journal Acta Eruditorum the announcing "a new method for the Maxima, minima, andtangents, which is not hampered by quantities fractional and irrational, as well as a notable type of calculation for this", i.e., a work on what is today known under the name of differential calculus. In that same magazine two years later published the foundations of what we know today as Integral Calculus.

Although Leibniz was the first to publish a work on calculus, who first developedthese themes was Isaac Newton during the years 1664 to 1666. By then, Newton was a student of Trinity College, Cambridge and invented what he called fluxions, which were nothing more than a set of rules with which also could calculate maximum, minimum and tangents without that irrational or fractional quantities amounted no obstacle.

In 1669, when Newton was 27 years old, he already occupied aChair of mathematics at Cambridge, but when she really rose to the Summit of Fame was in 1687, year in which he published his book Principia Mathematica, work that, according to some, is the largest scientific book ever written. It explained the laws that govern the universe, and mathematically deduced from tidal flows up to the orbits of the planets. With this work, Newton became the living symbol...