Sains Malaysiana 41(4)(2012): 445-452 Effects of Spin Contamination on the Stability and Spin Density of Wavefunction of Graphene: Comparison between First Principle and Density Functional Methods (Kesan Pemumusan Spin Terhadap Kestabilan dan Ketumpatan Spin bagi Fungsi Gelombang Grafen pelumusan: Perbandingan antara Kaedah Prinsip Pertama dan Kaedah Kefungsian Ketumpatan) LEE SIN ANG*‚ SHUKRI SULAIMAN & MOHAMED ISMAIL MOHAMED-IBRAHIM ABSTRACT The effects of spin contamination on the
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WHAT IS METAL? A metal is a chemical element that is a good conductor of both electricity and heat. Metals are malleable and ductile and have lustrous appearance. They have moderate to high physical constants and high tensile strength. Metals are further divided into two main groups - ferrous and non ferrous metals. TYPES OF METAL • FERROUS METAL These are metals which contain iron. They may have small amounts of other metals or other elements added‚ to give the required properties
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1) Estimate the WACC that is appropriate for discounting the Collinsville plant’s incremental cash flows. You should estimate and present each component of the WACC separately‚ explaining briefly but clearly what assumptions you are making for each of them. In the same spirit‚ estimate the appropriate all-equity cost of capital for the APV-based valuation. WACC calculation. WACC = RD*(1-t)*D/(D+E)+RE* E/(D+E) Cost of equity We assume that risk free rate (Rf) equals rate of long-term Treasury
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The Evolution of Jet Engines The jet engine is a complex propulsion device which draws in air by means of an intake‚ compresses it‚ heats it by means of an internal combustion engine‚ which when expelled it turns a turbine to produce thrust‚ resulting in a force sufficient enough to propell the aircraft in the opposite direction (Morgan 67). When the jet engine was thought of back in the 1920’s the world never thought it would become a reality‚ but by 1941 the first successful jet flight was
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Golf is a game played on a large open-air course‚ in which a small hard ball is struck with a club into a series of small holes in the ground. The object being to use the fewest possible strokes to complete the course. Golf began around 1457 when King James ll of Scotland banned Golf and football because he wanted people to focus on archery. The first major item you need to play golf is a golf ball. Some of the first golf balls were made entirely of hardwood‚ such as beech and box trees. These balls
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Core Module 1: The Chemical Earth Contextual Outline The Earth includes a clearly identifiable biosphere‚ lithosphere‚ hydrosphere and atmosphere. All of these are mixtures of thousands of substances and the use of this pool of resources requires the separation of useful substances. The processes of separation will be determined by the physical and chemical properties of the substances. In order to use the Earth’s resources effectively and efficiently‚ it is necessary to understand the properties
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Some types of carbon that contain compounds such as carbides‚ carbonates‚ and oxides of carbon and cyanides are sometimes classified as inorganic. AllotropesHYPERLINK "http://en.wikipedia.org/wiki/Allotropes_of_carbon" of carbon such as diamond and graphite may also be classified as inorganic. The difference between "organic" and "inorganic" carbon compounds‚ even though they are useful in organizing the area of chemistry it somewhat doesn’t make sense. Organic chemistry is the science that deals with
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connects the head to the shaft. It may be a separate triangular piece at the base of the head‚ or may actually be integrated into the head itself. Shaft The shaft is the long rod between the throat and handle. Often made of a composite material such as graphite‚ the shaft can be stiffer or more flexible based on the needs of the player. Handle The handle connects to the shaft and is used to hold the racket. The handle is covered with a material called the grip. There are two types of grips: towel grips
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with high force. It also caused the explosion of outside control barrier in both accidents. The major difference is the difference of both reactor types. In Chernobyl disaster‚ the atomic pile caught fire. These atomic piles were created using graphite blocks for moderators. In this case‚ explosion was a disaster that resulted from the burned core of massive clouds of highly reactive fission by-products. This disaster caused to evacuate the nearby areas as a ghost town. There were many fatalities
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Magnetic Storm This video is about the Earth’s magnetic force and its wavering. The molten iron in the earth creates the magnetic force around the earth. The magnetic force protects the earth‚ making it possible for life to exist on the planet‚ unlike other planets with weaker magnetic forces. Recently‚ though‚ scientists have discovered that the magnetic field seems to be faltering. The magnetic force starts near the South Pole and extends around the earth close to the North Pole and shields
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