Sunday, October 28, 2007

Subspecies of Tiger

There are nine recent subspecies of tiger, three of which are extinct, one of which is nearly certain to become extinct in the near future, and five of which still occur. Their chronological range ran through Russia, Siberia, Iran, Afghanistan, India, China and south-east Asia, including the Indonesian islands. These are the ongoing subspecies, in descending order of wild population:

Bengal tiger:

The Bengal tiger or the Royal Bengal tiger (Panthera tigris tigris) is originate in parts of India, Bangladesh, Nepal, Bhutan and Myanmar. It lives in different habitats: grasslands, subtropical and tropical rainforests, scrub forests, wet and dry deciduous forests and mangroves. The Indian government's estimated populace figure for these tigers is between 3,100 and 4,500, some 3,000 of which are found in India alone. However, many Indian tiger conservationists uncertainty this number, seeing it as overly optimistic. The number of Bengal tigers in India may be less than 2,000, as most of the collected statistics are based on pugmark identification, which often gives a biased result.

Sunday, October 21, 2007


Tiger's eye

Tiger's eye (also Tigers eye, Tiger eye) is a chatoyant gemstone that is generally yellow- to red-brown, with a silky luster. It is a rubbery silicified crocidolite (blue asbestos), a classic model of pseudomorphous replacement. An incompletely silicified blue option is called Hawk's eye. A member of the quartz group, its physical and optical properties are the same or very near to those of single-crystal quartz.

The gems are generally cut en cabochon in order to best display their chatoyancy. Red stones are brought about through calm heat treatment. Honey-coloured stones have been used to try to be like the much higher valued cat's eye chrysoberyl (cymophane), but the overall effect is unconvincing. Artificial fibreoptic glass is a general imitation of tiger's eye, and is produced in a wide range of colours.

Monday, October 15, 2007

Naming and etymology of Tiger

The word "tiger" is taken from the Greek word "tigris", which itself is consequential "possibly from an Iranian source." In American English, "Tigress" was first record in 1611. "Tiger's-eye" is a name for a golden-brown with stripes, chatoyant, fibrous assortment of quartz used as a semi-precious gemstone. It was one of the lots of species formerly described, as Felis tigris, by Linnaeus in his 18th century work, Systema Naturae. The generic factor of its scientific designation, Panthera tigris, is often presumed to derive from Greek pan- ("all") and ther ("beast"), but this may be a folk etymology. Although it came into English from side to side the classical languages, panthera is probably of East Asian origin, meaning "the yellowish animal," or "whitish-yellow".

Monday, October 08, 2007

Tiger

The tiger (Panthera tigris) is a animal of the Felidae family, the largest of four "huge cats" in the Panthera genus. Native to the mainland of Asia, the tiger is an top predator and the largest graceful species in the world, comparable in size to the biggest fossil felids. The Bengal Tiger is the most common subspecies of tiger, constituting something like 80% of the entire tiger population, and is found in India, Bangladesh, Bhutan, Myanmar and Nepal. It has disappeared from much of its previous circulation including the Caucasus, Java and Bali.

The tiger is an endangered variety, with the majority of the world's tigers now living in captivity.Several subspecies are extinct and others critically in danger of extinction. Tigers have featured in ancient mythologies and tradition, and continue to be depicted in modern films and literature, as well as appearing on flags, coats of arms and as mascots for sporting teams. It is the national animal of India, among other countries.

Monday, September 24, 2007

Water abstraction

Water abstraction, or water extraction, is the procedure of taking water from any source, either temporarily or permanently. Most water is used for irrigation or treatment to produce drinking water. Depending on the environmental legislation in the relevant country, controls may be located on abstraction to limit the amount of water that can be removed. Over abstraction can lead to rivers drying up or the level of groundwater aquifers reducing inappropriately. The science of hydrogeology is used to assess safe abstraction levels.

Monday, September 17, 2007

Biotic pollination

It occurs when pollination is mediated by an organism, termed a pollinator. Entomophily, pollination by insects, often occur on plants that have urbanized blue petals and a strong scent to attract insects such as, bees, wasps and rarely ants (Hymenoptera), beetles (Coleoptera), moths and butterflies (Lepidoptera), and flies (Dipteral). In Zoophily, pollination is done by vertebrates such as birds and bats, mainly, hummingbirds, sunbirds, spider hunters, honeyeaters, and fruit Bats. Plants modified to this strategy tend to develop red petals to attract birds and rarely develop a scent because few birds have a sense of smell.

Monday, September 10, 2007

Troposphere

From the Greek word "τρέπω" importance to turn or mix. The troposphere is the lowest layer of the atmosphere; it starts at the surface and extends to between 7 km (23,000 ft) at the poles and 17 km (60,000 ft) at the equator, with some distinction due to weather factors. The troposphere has a enormous deal of vertical mixing due to solar heating at the surface. This heating warms air masses, which makes them less intense so they rise. When an air mass raises the force upon it decreases so it expands, doing work against the contrasting pressure of the surrounding air. To do work is to use energy, so the temperature of the air mass decreases. As the temperature decreases, water vapor in the air mass may concentrate or solidify, releasing latent heat that further uplifts the air mass. This process determines the maximum rate of refuse of temperature with height, called the adiabatic lapse rate.

Tuesday, September 04, 2007

Hardware and software design

Supercomputers using custom CPUs traditionally gained their speed over conventional computers through the use of innovative designs that allow them to carry out many tasks in parallel, as well as complex feature engineering. They tend to be expert for certain types of computation, usually numerical calculations, and perform poorly at more general computing tasks. Their memory hierarchy is very cautiously designed to ensure the processor is kept fed with data and commands at all times—in fact, much of the performance difference between slower computers and supercomputers is due to the memory hierarchy. Their I/O systems tend to be planned to support high bandwidth, with latency less of an issue, because supercomputers are not used for transaction processing.

As with all highly parallel systems, Amdahl's law applies, and supercomputer designs devote great effort to eliminate software serialization, and using hardware to speed up the remaining bottlenecks.

Monday, August 27, 2007

Leaf vegetable

Leaf vegetables, also called potherbs, greens, or leafy greens, are plant leaves eat as a vegetable; sometimes attend by tender petioles and shoots. Although they come from a very broad diversity of plants, most share a great deal with other leaf vegetables in nutrition and cooking methods.

Nearly one thousand types of plants with edible leaves are known Leaf vegetables most often come from short-lived herbaceous plants such as lettuce and spinach. Woody plants whose leaves can be eaten as leaf vegetables include Adenosine, Aralia, and Moringa, Morus, and Toona species.

The leaves of many fodder crops are also edible by humans, but frequently only eaten under famine conditions. Examples include alfalfa, clover, and most grasses, as well as wheat and barley. These plants are often much more prolific than more traditional leaf vegetables, but utilization of their rich nutrition is difficult, primarily because of their high fiber content. This obstacle can be overcome by further giving out such as drying and grinding into powder or pulping and pressing for juice.

During the first half of the 20th century many grocery stores with vegetable sections sold small bunch of herbs tied with a thread to small green and red peppers known as "potherbs."

Sunday, August 19, 2007

Jerkin

A jerkin is a man's short close-fitting jacket, prepared typically of light-colored leather, and without sleeves, worn over the doublet in the sixteenth and seventeenth centuries.
Leather jerkins of the sixteenth century were repeatedly slashed and punched, both for adornment and to improve the fit.Jerkins were worn bunged at the neck and hanging open over the pea’s cod-bellied fashion of doublet (as worn by Martin Frobisher).

During the Normandy disgusting, American troops had little reasons to feel under provisioned compared to the Brits and Canadians, but the lack of leather jerkins was one major deficit.
During the post war period, a much less idiosyncratic PVC version was introduced to the armed forces. WD excess leather jerkins swamped the UK during the 1950s and 1960s and were a common sight on manual workmen across the country.

Sunday, August 12, 2007

Diesel

Diesel engine cars have long been admired in Europe with the first models being introduced in the 1930s by Mercedes Benz and Citroen. The major benefit of Diesels is a 50% fuel burn competence compared with 27% in the best gasoline engines. A down side of the diesel is the presence in the wear out gases of fine soot particulates and manufacturers are now preliminary to fit filters to remove these. Many diesel motorized cars can also run with little or no modifications on 100% biodiesel.

Monday, August 06, 2007

Essentials of healthy life-cleanliness a brief review


Health is wealth so preserve it. Life is short so use it in the right way. Cleanliness merely fits with the apt meaning of being free from dirt, dust, germs and bad smells. A recent shift has now taken place to recognize that 'germs' may play a major role in our immune systems. So experts say washing hands frequently, especially when in an environment of many people with infections and diseases. Washing is one of the best ways to achieve cleanliness. Have a brief overlook on the following issue to be aware of how to keep one self clean.

A step way process regarding cleanliness of hands is given below:

• Use warm water
• But avoid scorching your hands.
• Use anti-bacterial soap or hand wash.
• Wash between fingers and use paper towels to wipe off.

Washing of hands has to be followed

• Before eating
• After eating
• After using the toilet
• After playing outdoor games
• After attending to a sick person
• After blowing nose, coughing, or sneezing; and after handling pets.

The proverb "Cleanliness is next to Godliness," a common phrase that describes humanity's high opinion of being clean. Purposes of cleanliness include health, beauty and to avoid the spreading of germs .If your hands have any kind of skin cut or infection, wash hands with an anti bacterial soap.

Sunday, July 29, 2007

DVD

DVD ("Digital Versatile Disc" or "Digital Video Disc") is an admired optical disc storage space media format that can be used for data storage, like movies with high video and sound quality. DVDs be similar to Compact Discs in that they have the precise appearance (i.e. diameter: 120 mm or 4.72 in, occasionally 80 mm or 3.15 in.) and both are optical storage media so similar that a DVD reader or writer can usually read CDs, but DVDs are encoded in a dissimilar format of much greater density, allowing a data storage capability 8 times greater (single-layer, single-sided).

All read-only DVD discs, regardless of type, are DVD-ROM discs. This includes replicated (factory pressed), recorded (burned), video, audio, and data DVDs. A DVD with properly formatted and structured video content is a DVD-Video disc. Everything else, (including other types of DVD discs with video content) is known as a DVD-Data disc. Consumers use the term "DVD-ROM" to refer to pressed data discs only, but that is wrong usage; moreover, the term DVD is also applied basically in describing newer video disc formats, Blu-ray Disc and HD DVD.

Sunday, July 22, 2007

Humans

The term "conception" commonly refers to fertilization, but is sometimes defined as implantation or even "the point at which human life begins," and is thus a subject of semantic arguments about the beginning of pregnancy, within the abortion deliberate. Gastrulating is the point in development when the implanted blast cyst develops three germ layers, the endoderm, the exoderm and the mesoderm. It is at this point that the inherited code of the father becomes fully occupied in the development of the embryo. Until this point in development, twinning is probable. Additionally, interspecies hybrids which have no chance of growth survive until gastrulation. However this stance is not entirely necessary since human developmental biology literature refers to the "concepts" and the medical literature refers to the "products of conception" as the post-implantation embryo and its surrounding membranes. The term "conception" is not generally used in scientific literature because of its variable definition and suggestion.

Sunday, July 15, 2007

Seedless fruits

Seedlessness is a significant feature of some fruits of commerce. Marketable cultivars of bananas and pineapples are examples of seedless fruits. Some cultivars of citrus fruits especially navel oranges and mandarin oranges, table grapes, grapefruit, and watermelons are appreciated for their seedlessness. In some type, seedlessness is the result of parthenocarpy, where fruits set without fertilization. Parthenocarpic fruit set may or may not need pollination. Most seedless citrus fruits need a pollination stimulus; bananas and pineapples do not. Seedlessness in table grapes consequences from the abortion of the embryonic plant that is fashioned by fertilization, an occurrence known as stenospermocarpy which requires normal pollination and fertilization.

Tuesday, July 10, 2007

Wakeboard

Wakeboard Boats have a device that creates a huge wake for a skier to jump the wakes from face to face doing aerial tricks. Wakeboard complete boats are Drive boats. This means they are an inboard boat among the engine place backwards in the nurture of the boat. Some wakeboard detailed boat models are direct drive boats where the engine is in the center of the boat. Most wakeboard boats will have some features that help to make large wakes. Ballast, lodge, and hull technology. Most new wakeboarding boats come usual with some sort of regular ballast. Generally, these ballast tanks are placed inside of the hull of the boat and can be crowded and empties by switches situated in the drivers area. The ballast weights the boat down, creating a larger wake when in proposition. The Wedge is a machine that helps shape the wake. It is a metal structure situated behind the propeller that helps the driver fine melody the wake for the athlete. Hull technology is the innovation and R&D that the manufacturers put into their boats to make sure the best stock wake possible. Many boarders use after market ballast and guide to further weight down their boats for very huge wakes or for sports such as wake surfing.

Sunday, June 17, 2007

Runabout


A runabout is one small motorboat holding among four and eight people, well suited to moving about on the water. Runabouts can be used for racing, for enjoyment activities like fishing and water skiing, or as a ship's fond for larger vessels. Some common runabout boats are bow rider, center console, cuddy and walkaround.

The use of aluminium in small boat creation came soon after World War II because of availability of aircraft materials as war surplus. Fibreglass was then introduced as an additional way to lessen the maintenance cost and weight of watercraft.

By 1960, wooden powerboats had become unusual since most new vessels used fiberglass or other lightweight resources. Fiber unbreakable plastic materials are now used widely in manufacturing small runabout boats to reduce weight and maximise speed when racing powerboats.

Sunday, June 10, 2007

Pontoon

A pontoon is a flat-bottomed boat or the floats used to support an arrangement on water. It may be simply constructed from closed cylinders such as pipes or barrels or made-up of boxes from metal or concrete. These may be worn to support a simple platform, creating a raft. A raft supporting a house-like structure is single form of houseboat.
Pontoon boats usually run slower and are less likely to cause harm to themselves or other vessels, and are thus less luxurious to insure. As such, they are the most admired vessel style for rental operations. They also present the largest value in terms of capacity to price.

Tuesday, June 05, 2007

Longboat

His longboat should not be confused with a Long ship; or with a narrow boat. In the days of sailing ships, a vessel would take a number of boats for various uses. One would be a longboat, an open, mainly rowing boat with eight or ten oarsmen, two per spoil. In other words the longboat was double banked: its rowing benches were planned to accommodate two men. Unlike the vessel or the cutter, the longboat would have quite fine lines aft to permit its use in steep waves such as surf or wind against tide where need be.
It had the double-banked understanding in common with the cutter. This was possible as it had a beam alike to a cutter's but broader than that of a gig, which was solitary banked. The longboat was frequently more seaworthy than the cutter which had a fuller stern for such load-carrying work as laying out an anchor and cable. In a seaway or surf therefore, the cutter was more flat to broaching to.

Sunday, May 20, 2007

Houseboat

A houseboat is a boat that has been planned or modified to be used primarily as a human dwelling. Some houseboats are not powered, because they are frequently moored, kept stationary at a fixed point.
Houseboats are common as everlasting dwellings in Southeast Asia; in some other areas, they may serve more regularly as secondary or vacation homes or for tourism.
Australia
In Australia, especially on the Murray River and the sunny coastline of Queensland, there are many motorized, pontoon-based houseboats with two or more bedrooms; some of these houseboats have levels or storey. Some are privately own as either a primary house or a holiday shack. Many are also available for hire (rent) as self-driven holiday purpose with accommodation for four to perhaps a dozen persons. Many males enjoy meeting together to fish and drink alcohol in the safe passages of the Coomera River and The Great Sandy Straits near the World's largest sand island - Fraser Island. A famous cruise destination for Queensland house boaters is the Isle of Barry - a unique, peaceful location sought by many, but only found by a dedicated few.
Europe
In Europe, some of the supreme and costliest examples of houseboats can be seen along the canals of Amsterdam (in the Netherlands), which even has houseboat hotels. Houseboats are very luxurious nowadays in Amsterdam because of the limited number of moorings; this expense has reduced the likelihood that the about 2,400 families that live on the inner waters of Amsterdam will find themselves confronted by new neighbor boats.
India
In India, houseboats are frequent on the backwaters of Kerala; see below, and on the Dal Lake near Srinagar in Jammu and Kashmir.