24/05/2013 Commerce CHM 1046 General Chemistry II Dr. Michael Blaber Electrochemistry Commercial Voltaic Cells Voltaic cells provide a convenient‚ safe and portable supply of electrical energy. The Industrial Revolution marked the development of heat engines‚ and other devices‚ that utilized the energy released from combustion reactions in the form of heat The Digital Age (Electronic Revolution?) revolves around devices that require energy in the form of electrical energy. Such devices
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STK 1084 Inorganic Chemistry I‚ LU 3 Oxidation – Reduction Reactions‚ Prepared By: Dr. Tay Meng Guan‚ Faculty of Resource Science and Technology‚ Universiti Malaysia Sarawak. LU 3 Oxidation and Reduction Reactions 3.1 Ideas of Oxidation and Reduction Oxidation of an atom can be occurred in the following conditions: 1. Losing an electron from the orbitals. e.g.: A A+ + e- 2. Adding an electronegative element (e.g.: F‚ Cl‚ Br‚ O) to a molecule. e.g.: A + F AF 3. Losing hydrogen
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radio. Using the carrier waves in the commercially 40-400 MHz range and both frequency and modulated techniques it demonstrated successfully. The white paper reveals about the working of a nano radio with carbon nano tube and electrodes. The carbon nano tube plays a very crucial role in the operation of a nano radio. The multi usage of the single walled carbon nano tube as an antenna ‚ tuner‚ amplifier and demodulator. The differences between the working of a normal radio
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flexible gelatin-like slab. During electrophoresis‚ the gel is submersed in a chamber containing a buffer solution and a positive and negative electrode. The DNA to be analyzed is forced through the pores of the gel by the electrical current. Under an electrical field‚ DNA will move to the positive electrode (red) and away from the negative electrode (black). Several factors influence how fast the DNA moves‚ including; the strength of the electrical field‚ the concentration of agarose in the
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ACKNOWLEDGEMENT I would like to take this opportunity to express my profound sense of gratitude and sincere thanks of my guide Mrs. ANJALI GUPTA Assistant Professor‚ Department of Electrical and electronics Engineering‚ NIET‚ Greater Noida for being helpful and great source of inspiration. His keen interest and constant encouragement gave me confidence to complete my work. I wish to extend my sincere thanks for his excellent guidance suggestion for the successful completion of my seminar work.
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HVDC TRANSMISSION H-HIGH V-VOLTAGE D-DIRECT C-CURRENT 1 WHY HVDC ? BULK POWER TRANSMISSION WITHLOWER LINE LOSSES AS NO REACTIVE POWER TRANSFER TAKES PLACE CONNECT TWO ASYNCHRONOUS SYSTEM. PROVIDES SYSTEM STABILITY. CONTROLABILITY OF POWER FLOW AT HIGH SPEED. LESS RIGHT OF WAY FOR TRANSMISSION LINES. NO CONTRIBUTION TO SHORT CIRCUIT LEVEL OF THE AC BUS CONNECTED. NO CHARGING CURRENT TO DIMINISH THE USEFUL CAPACITY OF THE LINE. DISTANCE IS NOT LIMITED BY STABILITY POINT OF VIEW. 2 BREAKEVEN
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EEG signal due to mental task [11]. ii) Signal Acquisition and Processing The EEG signals from the scalp are collected using silver/silver chloride (Ag/AgCl) electrodes are the very cost effective method. If gel is required between the electrode and scalp then this kind of electrode is called “wet” electrode. Use of this electrode needs very long time and it is uncomfortable to
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the category entitled Electrochemical cells GALVANIC CELLS Parts of the voltaic or galvanic cell: o Anode--the electrode where oxidation occurs. After a period of time‚ the anode may appear to become smaller as it falls into solution. o Cathode-- the anode where reduction occurs. After a period of time it may appear larger‚ due to ions from solution plating onto it. o inert electrodes—used when a gas is involved OR ion to ion involved such as Fe3+ being reduced to Fe2+ rather than Fe0. Made of Pt
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ionizable groups that cause the amino acids‚ in solution‚ to act as charged polyelectrolytes that can migrate in an electric field. The amino acids with a net positive charge will migrate toward the negative electrode. Those with a negative net charge will move toward the positive electrode. An inert substance such as paper or gel is used as a supporting medium for the conducting liquid in most electrophoretic methods. In this experiment of separating amino acids‚ a phosphate buffer (pH 6) will
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the shaft hole and hammer shank is not damaged‚ but will inevitably cause the entire hammer scrap waste. Therefore‚ the hammer is in use‚ can not let too much wear and tear on both sides ‚ we should replace him with a high manganese steel alloy or electrode surfacing to improve wear resistance. Secondly You have to understand the crusher frame repair ‚ cast steel racks are generally not in direct contact with the material ‚ but the chassis side machine side cover plate and is subject to the material
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