ORIGINS OF OPERATIONS MANAGEMENT AND OPERATIONS RESEARCH comparison of the origins of operations management and operations research reveals that both are an innovation of the 20th century. The origin of operations research was in England‚ circa 1937‚ and has its roots in scientific management‚ with its first significant applications to military operations in both World War I and World War II. Operations management had its origins in the early factory system‚ and was more associated with physical
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components (soinc). The mobile phase can be liquid‚ gas‚ or supercritical fluid. How Does Chromatography Work? Chromatography is a surface effect. It works by first starting off with an unidentified liquid being injected into a column. As the chemicals in the liquid move down the column‚ they separate depending on their physical and chemical attributes‚ such as speed and weight. To easily picture the process‚ the example will pertain to a paper chromatography process in which the liquid is moving over the
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Mobile liquid phase is always passed stationary phase during chromatography. Developed TLC plate is then observed under short wave ultraviolet light‚ where most TLC plates contain fluorescent mixed with silica gel that allow to glow green color. Compounds will absorb the UV light and appear as dark spot against the green color TLC plate. In a column chromatography‚ cotton and sand is placed in purpose of holding silica gel and prevent leakage of adsorbent particles
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Oil and gas conservation means their better and more efficient use with regard to economic‚ social or environment costs and benefits resulting minimization of wastage and protection of environment. A very high priority is attached by the government to conservation of petroleum products in view of the need to reduce increasing gap between demand for and supply of oil and petroleum products. Government has initiated various steps to promote conservation of petroleum products in the different sectors
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the functioning of the Circular Flow of Income. The Circular Flow of Income is a model that indicates how money moves throughout an economy. This model was mainly in use up to the Second World War and is a model developed by classical (monetarist) economists. Many models have been developed based on The Circular Flow of Income. The Circular Flow of Income consists of two parts‚ the inner circular flow and injections and withdrawals. In the inner circular flow there are two basic economic institutions
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Encyclopædia Britannica Paper chromatography is used to separate "dissolved chemical substances". An example of dissolved chemical substances could be the pigments that make up a specific color‚ for example in a marker. When a chromatography paper experiment is done on a black marker‚ the experiment tends to separate all the different pigments that make up the color. In this experiment‚ the substance investigated was a black water soluble Giotto marker pen. Paper chromatography has two phases‚ the
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Modeling‚ decision making‚ and optimization In practical life‚ we have to continually make decisions. Making decisions are required for solving problems so that we can increase our opportunities and make life much easier and beneficial. There are many alternatives for making decisions‚ but making a rightful decision is a harder task. Evaluating these alternatives and choosing the best course of action represents the main essence of decision analysis. For analyzing various decision
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Energy Flow Robert Green 1/9/15 SCI/275 Christina Kamnikar Energy Flow After reviewing figure 4-10 presented in chapter 4 of Environmental Science‚ it is easy to recognize the different trophic levels. Each trophic level shows how energy and biomass flow through a food chain however it is eventually lost as heat. These levels consist of: biomass of producers‚ those consumed‚ and those not consumed. The first trophic level has the producers which graze the food chain‚ grazers consist of the
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EXPERIMENT (4) FLOW MEASUREMENT By: Eng. Motasem M. Abushaban. Eng. Fedaa M. Fayyad. PURPOSE: To study some of the famous instruments used in flow measurements. The measurement of water flow rate is an important topic in the study of fluid dynamics. There are many instruments used in flow measurements such as : o Venturi o Orifice plate o Variable area meter DESCRIPTION OF APPARATUS Water Flow Measuring Apparatus is designed as a free-standing apparatus for use on the
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Gas Laws Name Institution The 3 Gas Laws Introduction The three gas laws include: Gay-Lussac’s law‚ Boyle’s law and Charles’ law. When combined with Avogadro’s law the three laws can be generalized by the ideal gas law. Gases possess observable properties which include‚ mass‚ pressure (P)‚ thermodynamic temperature (T) and volume (V). These properties are related to each other and the state of a gas is determined by their values. The three laws are derived from these properties. Discussion
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