operation : The complete block diagram of the security alarming system fig. below. The regulated low voltage power supply produces 5 V for IR transmitter and receiver‚ amplifier circuit‚ trigger circuit ‚ driver circuit and buzzer. The anode of the transmitter and receiver are connected to the 5 V power supply and cathodes are connected to the ground. When the bias voltage applied to the security alarm circuit‚ the transmitter emits the Infra-red ray. Then this connected to amplifier
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The statue of Liberty first arrived in America in 1886 and took up permanent residency on Bedloe’s island in New York Harbor. The statue weighs in at 280 tons and is visible for more than 42 miles on a clear day. The statue of Liberty is without a doubt‚ among the most monumental figures in American history. The Statue of Liberty is made of an aluminum scaffolding‚ an iron framework and metal skin made from copper. Originally‚ she was to be made of bronze‚ but weight problems required a switch to
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conductivity and is electronically insulating Composite electrodes – Incorporate solid electrolyte into composite for fast ion transport – Incorporate conductive additive into composite for fast electron transport Solid Electrolyte Lithium Metal Anode Cathode Li anode SSE Cathode Conductive Additive Active Material 4 History 1839 (Michael Faraday) The first solid state electrolyte‚ PbF2 at high temperature 1884 (Warburg) Demonstrated Na+ conduction in glass 1888 (Warburg & Tegetmeier) The first
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The Identification and Production of Materials 1. Fossil fuels provide both energy and raw materials such as ethylene‚ for the production of other substances. Students Learn To: .2 Identify the industrial source of ethylene from the cracking of some of the fractions from the refining of petroleum. • Ethylene is produced either from natural gas or crude oil‚ which are mixtures of hydrocarbons. One method involves… Cracking: a process by which hydrocarbons with higher molecular
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Lactate dehydrogenase (LDH) is an enzyme involved in producing energy after the body has lost access to oxygen. LDH produces energy by helping to catalyze the reaction of NADH to NAD+ and does so by oxidation using pyruvate (1). LDH is found in highest concentrations in the heart‚ kidneys‚ lungs‚ blood cells and muscle tissues. Increases in LDH levels in the body have shown to be a marker of pain severity. This is because of tissue damage is the primary source of increasing LDH in the body. Thus
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objective of part one of this experiment was to discover how the properties of an electrochemical cell works. An electrochemical cell is based on an oxidation-reduction reaction and is composed of two half reactions: an anode and a cathode half reaction. Oxidation typically occur at the anode and reduction at the cathode. The electrochemical cell produces an electrical current which is driven by the potential differences in the two half reactions. The
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Technology Essay Ali Battery Only once in a lifetime will a new invention come about to touch every aspect of our lives. An important technology integrated into our society and around theworld is the invention of the Battery. Among many inventions of our modernworld‚ the battery stands out as an amazing on going development with its effect on almost every portable electric powered device. An electrical battery is acombination of one or more electrochemical cells‚ used to convert storedchemical
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Accumulator - A rechargeable battery or cell 1.1.2 Ampere-Hour Capacity - The number of ampere-hours which can be delivered by a battery on a single discharge. 1.1.3 Anode - During discharge‚ the negative electrode of the cell is the anode. During charge‚ that reverses and the positive electrode of the cell is the anode. The anode gives up electrons to the load circuit and dissolves into the electrolyte. 1.1.4 Battery Capacity - The electric output of a cell or battery on a service test delivered
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Identification and Production of Materials ================================ Ethene‚ Polymers and Ethanol ================================ Catalytic Cracking Oil refineries need to balance their outputs of various products (petrol‚ diesel‚ fuel oil‚ etc.) to match the demands of the marketplace. Catalytic cracking is the process in which high molecular weight (high boiling point) fractions from crude oil are broken into lower molecular weight (lower boiling point) substances in order to increase
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Production of materials 1B – identify the industrial source of ethylene from the cracking of some of the fractions from the refining of petroleum Industrial source of ethylene (ethene) * Obtained from Crude oil – fractional distillation * Heated to high temps * Components vaporise and rise up tower where condense and collect * Lower the boiling point‚ higher up tower compound rises * Separates crude oil into fraction each with different boiling range - Catalytic Cracking
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