Monday, February 25, 2008


Mercury (pronounced /'m?kj??ri/) is the deepest and smallest planet in the solar system, orbiting the Sun once every 88 days. Mercury is bright when viewed from Earth, range from -2.0 to 5.5 in apparent magnitude, but is not easily seen as its greatest angular separation from the Sun (greatest elongation) is only 28.3°: It can only be seen in morning and evening twilight. Comparatively little is known about it; the first of two spacecraft to move toward Mercury was Mariner 10 from 1974 to 1975, which mapped only about 45% of the planet’s surface. The second was the MESSENGER spacecraft, which mapped another 30% of the planet throughout its flyby of January 14, 2008. MESSENGER will make two more passes by Mercury, follow by orbital insertion in 2011, and will survey and map the whole planet.

Tuesday, February 19, 2008


The grapefruit is a subtropical citrus tree grown for its fruit which was initially named the "forbidden fruit" of Barbados.
These evergreen trees are frequently found at around 5-6 m tall, even though they can reach 13-15 m. The leaves are shady green, long up to 150 mm and thin. It produces 5 cm fair four-petalled flowers. The fruit is yellow-skinned, mainly oblate and ranges in diameter from 10-15 cm. The flesh is segmented and acidic, unreliable in color depending on the cultivars, which include white, pink and red pulps of varying sweetness. The 1929 US Ruby Red (of the Red blush variety) has the first grapefruit patent.
The fruit has only become popular from the late 19th century; before that it was only grown as a decorative plant. The US quickly became a major creation of fruit, with orchards in Florida, Texas, Arizona, and California. In Spanish, the crop is known as toronja or pomelo.

Monday, February 11, 2008

What is Spamdexing?

Spamdexing has frequent methods, such as repeating unrelated phrases, to control the relevancy or prominence of resources indexed by a search engine, in a manner inconsistent with the idea of the indexing system. Some consider it to be a part of search engine optimization; though there are numerous search engine optimization methods that get better the quality and exterior of the content of web sites and serve content useful to many users. Search engines use a variety of algorithms to end relevancy ranking. Some of these contain determining whether the search term appears in the META keywords tag, others whether the search term appear in the body text or URL of a web page. Many search engines test out for instances of spamdexing and will remove believe pages from their indexes. In addition people working for a search-engine organization can quickly block the results-listing from entire websites that use spamdexing, perhaps alert by user objects of false matches. The rise of spamdexing in the mid-1990s made the majority important search engines of the time less useful.

Monday, February 04, 2008


Soil, comprising the pedosphere, is located at the border of the lithosphere with the biosphere, atmosphere, and hydrosphere. It consists of mineral, organic matter, as well as living organisms. Soil formation, or pedogenesis, is the combined effect of physical, chemical, biological, and anthropogenic process on soil parent material ensuing in the configuration of soil horizons.
Soil is our most important natural resources because of its position in the landscape and its dynamic, physical, chemical, and biologic functions. While the general concept of soil is well recognized, the definition of soil varies, according to the viewpoint of the discipline or occupation by means of soil as a resource.