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.

Sunday, May 13, 2007

Cigarette boat

The cigarette boat or go-fast boat is a high performance boat of a feature design. Originally designed for his offshore racing team by Donald Aronow, the fast, powerful boats became infamous as the drug smuggling boat of choice in many parts of the world in the 1990s and first years of the 21st century.
In harmony with their pure racing heritage, the accommodations on these boats are minimal, and they are built to hold 5 or more passengers. While most do have some cabin under the foredeck, it is low and much smaller than a characteristic motor yacht of similar size. Apart from the racing market, most buyers of these boats purchase them for the mystique; the mixture of the racing and smuggling connections, plus the immense power and high top speeds make these boats popular as ostentatious displays of wealth.
These boats are hard to detect by radar except on flat calm seas or at close range. The United States Coast Guard and the DEA establish them to be stealthy, fast, seaworthy, and very complicated to intercept using conventional craft. Because of this, Coast Guards contain developed their own high-speed craft and also use helicopters. The helicopters are prepared with Anti-materiel rifles which can be used to disable the motors of the go-fast boat. The Coast Guard go-fast boat is a rigid hulled inflatable boat RHIB ready with radar and powerful engines. The RHIB is armed with quite a few types of non-lethal weapons and M240 GPMG.

Sunday, April 15, 2007

Center Console

Center Console is a type of single decorated open hull boat where the console of the boat is in the center of the boat, there is no cabin and the boat deck environs the console so that a person on the boat can walk all approximately the boat from stern to bow with ease. The comfort of a boat is where all the controls are including routing, explosion, trim control, radio and other electronic devices, switches etc. the console may have a small storage space which can contain a head. In universal there is no weather protection or berths so is not good for cruising. The console may have a Top cover to provide limited relief from the sun and rain but some fishermen do not like it because it interferes with casting. Most center consoles are motorized by outboard motors.
A Center Console boat is popular with spare time fishermen as they can fight fish with ease and walk around the boat while doing so. Because of the large deck space, it is a good efficacy boat and also established as small boat on a large ship.
Center console boats may variety in length from 15 feet to about 45 feet.

Monday, April 02, 2007

Bareboat

A bareboat charter is an agreement for the hiring of a boat, whereby no crew or provisions are incorporated as party of the agreement; instead, the people who rent the boat from the owner are in charge for taking care of such things.
There are legal difference between a bareboat agreement and other types of charter arrangement, such as crewed or luxury yacht charter, commonly called time or voyage charters. In a voyage or time charter the charters the ship (or part of it) for an exacting voyage or for a set period of time. In these charters the chartered can direct where the ship will go but the owner of the ship retains ownership of the ship through its employment of the master and crew. In a bare-boat or termination charter, on the other hand, the owner gives possession of the ship to the charterer and the charterer hires its own master and crew. The bare-boat charterer is sometimes called a "discontent owner". The giving up of possession of the ship by the owner is the important characteristic of a bare-boat or demise charter.

Wednesday, March 28, 2007

A Business Plan
The following production plan has been formulated to obtain $200,000 in capital to launch a coffeehouse on the college grounds of Doane College named The Orange Cup. This arrangement will also serve as a formal sketch for the first five year's of operation. The financial forecasts show that this asset has significant pledge for the future.
The Orange Cup will provide for the Doane College Community a comfortable atmosphere while serve quality coffee at a reasonably priced with extraordinary service. An ample variety of coffee products including, gourmet coffees, latte, cappuccino, espresso, and iced coffee, will be offered at The Orange Cup. In addition, The Orange Cup will recommend juice, pop, and bottled water, hot cocoa, hot cider, and tea.

The marking plan for The Orange Cup is to attract students and staff to the coffeehouse to continue in a relaxed atmosphere, or for those customers with excited schedules, the expediency of our products.

Tuesday, March 20, 2007

Urban-suburban
Urban-suburban bus line is usually categorized as public transit, particularly for large metropolitan transit networks. Usually these routes cover a moderately long distance compared to most transit bus routes, but still short — frequently 40 miles in one direction. An urban-suburban bus line normally connects a suburban area to the downtown core.
The bus can be amazing as easy as a mere refitted school bus (which sometimes already have overhead storage racks), or a standard transit bus customized to have some of the functionality of an interstate coach. The example shown here has the same extent as a standard transit bus, but with one door and air conditioning. It provides accommodations for the disabled (through a lift at the front), and thus have a few high-back seats, usually in the front, that can be folded up for wheelchairs. The rest of the seats are recline upholstered seats and have person lights and overhead storage bins. Because it is a traveler bus, it has some (but not much) standing rooms, stop-request devices, and a farebox. This model also has a bike rack at the front to house two bicycles. Some lines use a full-size throughway coach with on board toilet, such as the "TrainBus" service of West Coast Express.

Wednesday, February 21, 2007

Electron
The electron is a basic subatomic particle that carries a negative electric charge. It is a spin-½ lepton that participates in electromagnetic connections, and its mass is less than one thousandth of that of the smallest atom. Its electric charge is clear by convention to be negative, with a charge of -1 in atomic unit. Together with atomic nuclei, electrons make up atoms; their interaction with adjoining nuclei is the main cause of chemical bonding.
The electron is in the class of subatomic particles called leptons, which are supposed to be basic particles (that is, they cannot be broken down into smaller constituent parts).
As with all particles, electrons are able to act as waves. This is called the wave-particle duality; also known by the term complementarily coined by Niles Bohr and can be established using the double-slit experiment.

Sunday, January 21, 2007

Colossus of Rhodes

The Colossus of Rhodes was a giant statue of the god Helios, erected on the Greek island of Rhodes by Chares of Lindos, a pupil of Lysippos, between 292 BC and 280 BC. It was roughly the same size as the Statue of Liberty in New York, although it stood on a lower platform. It was one of the Seven Wonders of the World.

Alexander the Great died at an early age in 323 BC without having had time to put into place any plans for his succession. Fighting broke out among his generals, the Diadochi, with three of them eventually divides up much of his empire in the Mediterranean area. During the fighting Rhodes had sided with Ptolemy, and when Ptolemy eventually took control of Egypt, Rhodes and Ptolemaic Egypt formed an alliance which controlled much of the trade in the eastern Mediterranean. Another of Alexander's generals, Antigonus I Monophthalmus, was upset by this turn of events. In 305 BC he had his son Demetrius invade Rhodes with an army of 40,000. However, the city was well defended, and Demetrius had to start construction of a number of massive siege towers in order to gain access to the walls.

Monday, January 08, 2007

Identical twins

Identical twins occur when a single egg is fertilized to form one zygote which then divides into two separate embryos. This is not considered to be a hereditary trait, but rather an anomaly that occurs in birthing at a rate of about 1:150 births worldwide, regardless of ethnic background. The two embryos develop into fetuses sharing the same womb. When one egg is fertilized by one sperm cell, and then divides and separates, two identical cells will result. Depending on the stage at which the zygote divides, identical twins may share the same amnion, which can cause complications in pregnancy.

For example, the umbilical cords of monoamniotic twins can become entangled, reducing or interrupting the blood supply to the developing fetus. About 50% of mono-mono twins die from umbilical cord entanglement. Monochorionic twins, sharing one placenta, usually also share the placental blood supply. These twins may develop such that blood passes disproportionately from one twin to the other through connecting blood vessels within their shared placenta, leading to twin-to-twin transfusion syndrome.

Monday, January 01, 2007

Metamorphosis

Metamorphosis is a biological course by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's form or structure through cell growth and differentiation. Some insects, amphibians, molluscs, crustaceans, echinoderms and tunicates undertake metamorphosis, which is usually accompanied by a change of habitat or behavior. Scientific usage of the term is exclusive, and is not applied to common aspects of growth, including rapid growth spurts. References to “metamorphosis” in mammals are imprecise and only colloquial.

Metamorphosis usually proceeds in distinct stages, usually starting with larva or nymph, optionally passing through pupa, and ending as adult. The immature stages of a species that metamorphoses are regularly called larva. But in the complex metamorphosis of many insect species, only the first stage is called a larva and sometimes even that bears a different name; the distinction depends on the nature of the metamorphosis.

Tuesday, December 26, 2006

History of India

Stone Age rock shelters with paintings at Bhimbetka in the state of Madhya Pradesh are the earliest known traces of human life in India. The first known permanent settlements appeared over 9,000 years ago and gradually developed into the Indus Valley Civilization, dating back to 3300 BCE in western India. It was followed by the Vedic Civilization which laid the foundations of Hinduism and other cultural aspects of early Indian society. From around 550 BCE, many independent kingdoms and republics known as the Mahajanapadas were established across the country laying the foundations of ancient India.

The empire built by the Maurya dynasty under Emperor Ashoka the Great united most of modern Southern Asia except the Dravidian kingdoms in the south. From 180 BCE, a series of invasions from Central Asia followed including the Indo-Greeks, Indo-Scythians, Indo-Parthians and Kushans in the north-western Indian Subcontinent. From the third century CE, the Gupta dynasty oversaw the period referred to as ancient India's "Golden Age." While the north had larger, fewer kingdoms, in the south there were several dynasties such as the Chalukyas, Rashtrakutas, Hoysalas, Cheras, Cholas, Pallavas and Pandyas in different times and regions.

Sunday, December 17, 2006

Hail formation

Hail forms on condensation nuclei such as dust, bugs, or ice crystals, when super cooled water freezes on make contact with. In clouds contains large numbers of super cooled water droplets, these ice nuclei grow quickly at the expense of the liquid droplets because the saturation vapor pressure over ice is slightly less than the saturation vapor pressure over water. If the hail stones grow large enough, latent heat released by further freezing may melt the external shell of the hail stone. The development that follows, usually called wet growth, is more efficient because the liquid outer shell allows the stone to accrete other smaller hail stones in addition to super cooled droplets.

Once a hailstone become too heavy to be supported by the storm's updraft it falls out of the cloud. The reason rain can't fall, is typically because of the tough winds inside a thunderstorm cloud. These winds hold the rain and freeze it. As the process repeats, the hail grows gradually larger. When a hail stone is cut in half, a series of concentric rings, like that of an onion, are revealed. From these rings we can determine the total number of times the hail stone had traveled to the top of the storm before falling to the ground.

Tuesday, December 12, 2006

Mean sea level pressure

Mean sea level pressure is the pressure at sea level or the station pressure condensed to sea level assuming an isothermal layer at the station temperature. This is the pressure usually given in weather reports on radio, television, and newspapers. When barometers in the home are set to match the local weather reports, they measure pressure condensed to sea level, not the actual local atmospheric pressure. The reduction to sea level means that the usual range of fluctuations in pressure is the same for everyone. The pressures which are measured high pressure or low pressure do not depend on geographical location. This makes isobars on a weather map meaningful and useful tool. The altimeter setting in aviation, set either QNH or QFE, is another atmospheric pressure reduced to sea level, but the method of making this reduction differs slightly.

QNH barometric altimeter setting which will cause the altimeter to read airfield elevation when on the airfield. In ISA temperature conditions the altimeter will read altitude above mean sea level in the vicinity of the airfield.

QFE barometric altimeter setting which will cause an altimeter to read zero when at the reference datum of a particular airfield. In ISA temperature conditions the altimeter will read height above the datum in the vicinity of the airfield.