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The process of removing the bark from the logs to facilitate further processing.

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An oil refining process in which the gas-oil is cracked by a catalyst bed fluidized by using oil vapors.


The process of bevelling the stem, chine, sheers, keel, and frames so that the planking will have flat surfaces to glue and fasten to. A fair hull is one with no dips or bumps in the longitudinal lines of the hull. Fairness is checked by sighting down the longitudinal lines.


  1. An instrument used to measure continuously or at intervals a condition that must be kept within prescribed limits, such as radioactivity at some point in a nuclear reactor, a variable quantity in an automatic process control system, the transmissions in a communication channel or bank, or the position of an aircraft in flight. 2. To use meters or special techniques to measure such a condition. 3. A person who watches a monitor.


  1. Application of voltage to an electrolytic capacitor, electrolytic rectifier, or semiconductor device to produce a desired permanent change in electrical characteristics as a part of the manufacturing process. 2. A process for shaping or molding sheets, rods, or other pieces of hot glass, ceramic ware, plastic, or metal by the application of pressure.


  1. The method of applying a signal to an electronic circuit or device. 2. The process of introducing electrons or holes into a semiconductor so that their total number exceeds the number present at thermal equilibrium. 3. The introduction of fuel, fuel and air, fuel and oxidizer, water, or other substance into an engine induction system or combustion chamber.


In plant or process operations, the actual time that a unit is operating and producing product.


Any gas that contains a significant amount of constituents that may form acids when mixed with water. An example is the acid gas, consisting largely of hydrogen sulphide and carbon dioxide, created in the process of sweetening natural gas.


A fixed-bed, vapor-phase petroleum-refinery process using a precious-metal catalyst and external hydrogen; feedstocks include natural gas, pentane, and hexane cuts; the product is highoctane blending stock.


A semicontinuous thermal process for converting heavy petroleum stock to lighter material.


A petroleum-refinery process in which naphthas are passed over a catalyst at elevated temperatures and moderate pressures in the presence of added hydrogen or hydrogen-containing gases, to form high-octane BTX aromatics for motor fuels or chemical manufacture.

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