from the fabric. Many such bags are hanged in a bag house. The filter bags are cleaned occasionally by a mechanical shaker for efficient filtration. It has high efficiency and can filter 0.5 µm size particles. ELECTROSTATIC PRECIPITATOR – It works on the principle of electrostatic precipitation i.e. electrically charged particles are separated from the air by electrical field. It consists of – 1 Electrically charged (positive) collecting surface. 2 High voltage discharge electrodes. 3
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Ink ingredients and functions Colorants – color‚ transparent/ opaque Pigments – insoluble in water and organic solvents Dyes – soluble‚ brilliant color‚ low fade resistance Vehicles – fluid portion of ink‚ carrier of pigments Oil – used in offset inks Nondrying oils – news ink Drying oils – quickset ink Semidrying oil – environmentally friendly Resins/ binders Bonds pigments to one another Two types – natural (pine tree)‚ synthetic Solvent – dissolves resin and provides a mean of dryin
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INTRODUCTION Protons and neutrons make up a nucleus‚ which is the foundation of nuclear science. Fission and fusion involves the dispersal and combination of elemental nucleus and isotopes‚ and part of nuclear science is to understand the process behind this phenomenon. Adding up the individual masses of each of these subatomic particles of any given element will always give you a greater mass than the mass of the nucleus as a whole. The missing idea in this observation is the concept called nuclear
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The beam of electrons is created from an electron gun. This beam then travels through the length of the microscope cylinder‚ which contains the lenses‚ the specimen chamber‚ and the image-recording system. Two types of electron lenses are used‚ electrostatic and electromagnetic. They create electric and electromagnetic fields to both concentrate and move the beam. The electron microscope requires that the electron beam be in a vacuum‚ because electrons cannot travel far in air at atmospheric
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Kr (36) 2‚ 8‚ 18‚ 8 Xe (54) 2‚ 8‚ 18‚ 18‚ 8 Rn (86) 2‚ 8‚ 18‚ 32‚ 18‚ 8 The tendency for atoms to have eight electrons in the outer shell is known as Octet rule. IONIC BOND Definition: The electrostatic attraction between the cation (+ve ions) and anions (-ve ions) produced by electron transfer constitutes an ionic or electrovalent bond. Conditions for formation of ionic bond: 1) Bond formations occur between the metal and nonmetal. Metal
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1. Atomic and Molecular Structure a. Students know how to relate the position of an element in the periodic table to its atomic number and atomic mass. The Periodic Table organizes elements by their atomic number - from hydrogen (1) to whatever is the highest one currently known (>105). It is arranged so that similiar members fall in a list such as Chlorine Bromine etc.. The average atomic weight is usually shown with each element‚ but due to isotopes (caused buy nuclear varations)
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Proteins are arguably the most important things that people know the least about. As OpenStax CNX puts it‚ “Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules”. Proteins are “Macromolecules that contain nitrogen as well as carbon‚ hydrogen‚ and oxygen”(Miller‚ Kenneth R.‚ and Joseph S. Levine 48). Macromolecules are exceedingly large molecules that can be made up of several lesser molecules called proteins.
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the periodic table‚ the halogens‚ all react with the alkali metals to form ionic compounds in which the halide ions have a single negative charge. f) An ionic compound is a giant structure of ions. Ionic compounds are held together by strong electrostatic forces of attraction between oppositely charged ions. These forces act in all directions in the lattice and this is called ionic bonding. g) When atoms share pairs of electrons‚ they form covalent bonds. These bonds between atoms are strong
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Early History of Electric Power Date Event Pictures 1800-1819 Early electric experiments were performed with DC. In 1800‚ Alessandro Volta published a description of a silver/zinc battery‚ acknowledging that he did not know how it worked. In 1807‚ Humphry Davy constructed a practical battery (the picture will be immediately familiar to anyone who works with UPS systems)‚ and demonstrated both incandescent and arc light. • Volta’s famous bi-metalic frog twitch (I did this one myself as a boy..
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disaster occurred on May 6‚ 1937. A German passenger airship LZ 129 Hindenburg caught fire and was engulfed while its attempt to dock at the Naval Air Station Lakehurst in Manchester Township‚ New Jersey‚ United States. The fire was ignited by an electrostatic discharge which sparked leaking hydrogen from the zeppelin. In order to make up for extra than 12 hours in its transatlantic flight‚ the Hindenburg passed via a weather front of excessive humidity and high electric charge. Even though the mooring
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