Tuesday, October 30, 2007

Misconceptions&Compensations

Color blindness is not the swapping of colors in the observer's eyes, just the resolution. It is analogous to myopia: is that fuzzy blob one long bus or two short ones parked end to end? Grass is never red, and stop signs are never green. The color impaired do not learn to call red "green" and vice versa. However, dichromats often confuse red and green items. For example, they may find it difficult to distinguish a Braeburn from a Granny Smith and in some cases, the red and green of a traffic light without other clues (e.g., shape or location). This is demonstrated in this simulation of the two types of apple as viewed by a trichromat or by a dichroma.Anomalous Trichromats are often able to readily spot camouflage clothing, netting, and paint that has been designed for individuals with color-normal vision. For the same reasons a color-blind painter might use too much blue to paint a green foliage landscape, a similarly color-blind artillery spotter would perceive too little blue dye used in camouflage created to match the same landscape.Traffic light colors are confusing to some dichromats: there is insufficient apparent difference between the red and amber and sodium street lamps and the green can be confused with a grubby white lamp. This is a risk factor on a high-speed undulating road where angular cues can't be used. British Rail color lamp signals use more easily identifiable colors: the red is really blood red, the amber is quite yellow and the green is a bluish color.However dichromats tend to learn to see texture and shape. This lets them see through some camouflage patterns.[1] In the apple example, above, they will see the clear difference because the surface pattern is different.Color blindness almost never means complete monochromatism. In almost all cases, color blind people retain blue-yellow discrimination, and most color blind individuals are anomalous trichromats rather than complete dichromats. In practice this means that they often retain a limited discrimination along the red-green axis of color space although their ability to separate colors in this dimension is severely reduced.It should also be noted that even though some people are unable to see some or maybe even any of the numbers in (e.g. red-green) color blindness test, the person might still be able to tell the difference between the colors in his or her everyday life.

Wednesday, October 17, 2007

NoNi FrUiT


Description:
The noni plant is a small evergreen shrub or tree that grows from three to six metres. The noni plant has a straight trunk, large elliptical leaves, white tubular flowers and ovoid yellow fruits of up to 12 cm in diameter. The ripe noni fruit has a not so pleasant taste and odour.
Parts used:
All parts of the noni plant can be used: roots, stems, bark, leaves, and flowers and of course the fruits.
Phytochemicals:
Octoanoic acid, Terpenoids, Anthraquinones, Caproic acid, Urso
Medicinal properties:
Noni has been reported to have a range of health benefits for colds, cancer, diabetes, asthma, hypertension, pain, skin infection, high blood pressure, mental depression, atherosclerosis and arthritis. The noni contain the antibacterial compounds in the fruits (acubin, L-asperuloside and alizarin) and roots (anthrauinones). Noni conatins scopoletin which inhibits the growth of Escherichia coli, which is responsible for intestinal infections, and Heliobacter pylori, which causes ulcers.Damnacanthal, which is found in the noni roots, inhibits the tyrosine kinase and gives noni antitumor activity.
Other facts:
The medicinal properties of Noni were discovered, more than 2000 years ago, by the Polynesians, who imported the fruit from Southeast Asia. Today the noni fruits is eaten in many parts of the world, mainly in the Pacific Islands, Southeast Asia and Australia. Those who recovered from illness after eating the noni fruit called it ?the fruit of God?.In 2003, noni juice was approved by the European Commission as a novel food and was allowed to be commercialized in the EU. A novel food is food or a food ingredient that was not used to a significant degree in the EU before May 15, 1997. Before any new food product can be introduced on the European market it must be rigorously assessed for safety.

Monday, October 8, 2007

Friday, September 28, 2007

MRSA deadly virus like HIV

Researchers have found a new deadly virus Methicillin-Resistant Staphylococcus Aureus(MRSA) is beginning to appear outside hospitals in San Francisco, Boston, New York and Los Angeles, they say that this disease is being transmitted among the gay men during sex. Sexually active gay men in San Francisco are 13 times more likely to be infected than their heterosexual neighbors. Researchers at the University of California said that, once this disease reaches the general population, it will be truly unstoppable. This disease has already killed about 19,000 Americans in 2005. The bacteria can cause deep tissue infections if they enter the body through a wound in the skin.

Thursday, September 27, 2007

ABOUT THE NOVEL TREASURE ISLAND


Treasure Island is an adventure novel by author Robert Louis Stevenson, narrating a tale of "buccaneers and buried gold". First published as a book in 1883, it was originally serialised in the children's magazine Young Folks between 1881-82 under the title The Sea Cook, or Treasure Island.

Traditionally considered a coming of age story, it is an adventure tale known for its superb atmosphere, character and action, and also a wry commentary on the ambiguity of morality—as seen in Long John Silver—unusual for children's literature then and now. It is one of the most frequently dramatised of all novels. The influence of Treasure Island on popular perception of pirates is vast, including treasure maps with an 'X', schooners, the Black Spot, tropical islands, and one-legged seamen with parrots on their shoulders.

Thursday, September 20, 2007

PLUTO

Pluto is the baby out of the planets! It is the smallest and furthest away from the sun, and if an aircraft was travelling at a speed of 1,810 Km/h (1,125 mph) it would take about 370 years to travel from Earth to Pluto.

It was discovered in 1930. Its mass is much larger than Earth! which is surprising, considering that Earth is three times bigger. Even the moon is larger!!!!!

Pluto only has one moon - Charon. It was named after the character in Greek mythology who was a ferryman in the realm of Pluto. It was a happy coincidence for Jim Christy, its discoverer, that the name was so like that of his wife Charlene. Charon has a diameter of 1,186 Km (736 miles), more than half of Pluto.

Pluto is known to have a density just over twice that of water, indicating that it contains a rocky core. Its mantle is made, probably, of water and Methane. Its atmosphere probably consists of methane in a gaseous form, together with heavy gases such as nitrogen, argon, carbon monoxide and oxygen.

Its surface temperature is around -216°C (-355°F).