Examination of Water and Wastewater 5210 BIOCHEMICAL OXYGEN DEMAND (BOD)*#(1) 5220 CHEMICAL OXYGEN DEMAND (COD)*#(2) 5220 A. Introduction Chemical oxygen demand (COD) is defined as the amount of a specified oxidant that reacts with the sample under controlled conditions. The quantity of oxidant consumed is expressed in terms of its oxygen equivalence. Because of its unique chemical properties‚ the dichromate ion (Cr2O72–) is the specified oxidant in Methods Section 5220B‚ Section
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Aqueous Solutions Reactions‚ Metathesis (Double Replacement) Reactions and Net Ionic Equations Terrance Shelton Introduction India’s cultural treasure and biggest tourist attraction is slowly losing its magnificent appeal due to decades of acid rain. The walls of the Taj Muhal are composed of a marble-like substance ( CaCO3) that corrodes and eventually crumbles when reacted with acid rain(H2SO4). Not only is the Taj Muhal suffering‚ but also other historic landmarks across the world. This is
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1. Identify suitable business data‚ data elements‚ data types‚ and resources‚ based on the following interview between a database analyst and a lecturer from Sutherland University: Business Data Data Elements Data Types Resources Course Course code Course name Course start date Course end date Integer Character Date Date Admin Classes Class name Start date End date Time Location Class capacity Integer Date Date Date time Integer Variable Admin Students Student ID
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batch reactor under constant temperature conditions. Experimental Procedure The first step was to ensure the electrical supply to the rig was turned off and that the Armfield batch reactor was empty and clean. 500mL of 0.1M sodium hydroxide solution was then added manually. The pump and stirrer were then set to 7.0 and turned on. The batch reactor was started to ensure the conductivity probe was functional and the reading was displayed on the PC. 500mL of ethyl acetate was then added to the
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situations‚ across domains and industries‚ using quantitative and/or qualitative analysis techniques. B. Instruction Methodology: Case Discussions. The students are advised to go through the specified cases along with the study material required for that case. C. Suggested Titles (Text and Reference): 1. Research Methodology (concepts & cases); Deepak Chawla & Neena Sondhi‚ Vikas Publishing (prescribed) 2. Business Research Methods: William G. Zikmund‚ Thomson South
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(3) adoption of an incentive compensation plan for the marketing manager. The student’s task is to evaluate the past and prospective financial performance of the company and to critique its liberal credit and inventory policies. The objectives of the case are to: • Introduce and exercise tools and concepts of financial-statement analysis (including financial ratios‚ break-even analysis‚ and cash-flow statements). • Explore possible definitions of the “financial health” of a company.
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Proposing a Solution I live outside of a small town of 3‚000 people. The water system of our small town supplies drinking water to a population of 3‚000 to 5‚000. Our water system has been in place for 20 plus years and neglect has been rampant for almost the same period of time. Public water systems are governed by regulations and monitored by the State of Louisiana. The Town of Ferriday has been under state mandated “boil orders” more times that you could count. One of the more recent events
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Abstact 1) Introduction An adulterant is a chemical substance which should not be contained within other substances‚ such as food‚ beverages‚ fuels‚ for legal or other reasons. The addition of adulterants is called adulteration. The word is appropriate only when the additions are unwanted by the recipient. Otherwise the expression would be food additive. Adulterants when used in illicit drugs are called cutting agents‚ while deliberate addition of toxic adulterants to food or other products
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trade influenced all the aspects of the white Americans and African Americans’ life in the 18th century because it became the significant social and economic phenomenon in the history of the country (Dramaturgy Packet 2015‚ 17-18). In her play The Liquid Plain‚ Naomi Wallace discussed the idea of the transatlantic slave trade from the personal perspective of several characters in a vivid metaphorical language (Wallace 2013‚ 54). Thus‚ the concept of “vastness” of the transatlantic slave trade is
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CRU Computer Rental Case Solutions Solution 1 TABLE 1: CRU FLOWS | Customer | Receiving | Status 24 | Status 40 | Stored Orders | Orders at Suppliers | Status 41 | Status 42 | Status 20 | | | | | | | | | | | Throughput(Units/Week) | 1000 | 1000 | 1000*.70=700 | 1000*.30+ .15*700= 405 | 405 | 405 | 405 | 405 | 1000 | | | | | | | | | | | Inventory(Units) | 8000= 8*1000 | 500 | 1500 | 1000 | 500 | 405= 405*1 | 500+405 = 905 | 500 | 2000=2*1000 | | | | | |
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