ISOLATION OF INDIVIDUAL BACTERIAL COLONIES ON SOLID MEDIA Robert Koch developed a method for isolating pure cultures on solid media in 1883. To this end he added agar (a solidifying agent) to liquid nutrient broth; the nutrient broth supports the growth of a wide variety of microorganisms while the agar provides a solid substrate on which bacteria can be mechanically diluted and therefore isolated as independent colonies representing different bacterial species. The isolation of independent bacterial
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our observation of hexane through its boiling ranges‚ which we observed to be around 87 to 89 degrees Celsius. It ranged from about 77 degrees in fraction 1 to about 89 degrees in the fraction 10. Next‚ the toluene stayed relatively the same temperature throughout the first 6 fractions at around 69 degrees and then drastically shot up to 100 degrees by the end of fraction 10. This is due to hexane having a lower boiling point and being able to steadily increase through each fraction evenly as temperature
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UFC 3-540-02N 16 January 2004 UNIFIED FACILITIES CRITERIA (UFC) STEAM POWER PLANTS APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED UFC 3-540-02N 16 January 2004 UNIFIED FACILITIES CRITERIA (UFC) STEAM POWER PLANTS Any copyrighted material included in this UFC is identified at its point of use. Use of the copyrighted material apart from this UFC must have the permission of the copyright holder. U.S. ARMY CORPS OF ENGINEERS NAVAL FACILITIES ENGINEERING COMMAND (Preparing Activity)
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INTRODUCTION Distillation is a technique widely used in organic chemistry for separating compounds based on differences in their boiling points. The experiment is divided into two parts: simple distillation‚ an easy set-up where a solution or a mixture of substances with different volatility is separated through exposure heat; and fractional distillation‚ which under goes a series of evaporation and condensation process to purify more complex mixtures. Raoult and Dalton Law are the two principles
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NAME: AMOO KEHINDE O. MATRIC NO: 08CF07632 PROGRAM: CHEMICAL ENGINEERING COURSE CODE: TMC 411 10(Ten) Theses on political change in Nigeria • Nigerians should be able to go to the polling booths with the assurance that they are safe and no sort of chaos or pandemonium will occur during the time they cast their votes. • Nigerians should know that political violence is not the way to respond to their insatisfaction with political results‚ instead the use of dialogue is a better approach
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Overview of Steam Boilers A steam boiler is a vessel that contains water and a heat source powered by oil‚ coal or gas. The boiler transfers heat from the heat source to the water vessel‚ thereby turning the water into steam. This steam exits the vessel through a pipe and is transported to another location where it can be used for cleaning‚ to power equipment‚ to provide heat or for a number of other functions. A closed boiler system is one in which 100 percent of the steam is returned to the vessel
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Distillation of Alcohol Beverages Abstract Distillation is a process wherein a liquid is heated until its boiling point while the resultant hot vapors are subsequently captured and cooled‚ and the condensed vapors are collected. Among the many types of distillations‚ the fractional method or technique of distillation was used in this experiment. A step by step procedure was followed and an amount of 3.33 % of ethanol was obtained from the sample wine‚ Mateus Rose‚ which was used. Further
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In the experiment of distillation we separated two miscible liquids. The purpose of distillation is to identify and purify compounds. We began our experiment by setting up an apparatus for macroscale simple distillation. We used 60 ml of Cyclohexane/ Toluene. We began with the temperature at 50 degrees Celsius. Unfortunately‚ we reached an error when the compounds evaporated too rapidly. The compounds evaporated so quickly that we lost data from 2 ml to 13 ml. The heat was lowered and as a result
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undoubtedly proven crucial to our modern lives‚ without the monumental discoveries of the 18th and 19th century‚ we may not have had the opportunities to generate those advancements. In particular‚ the progress and development of iron and eventually steel‚ steam power and it’s multitude of uses‚ and the railway systems has truly defined the technological advancements of recent centuries. Body: Prior to the 18th century‚ the methods in place for producing iron were relatively rudimentary and ultimately inefficient
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Isolation Have you ever felt isolated from your surroundings‚ either because of language or culture wise‚ being new in town‚ feeling friendless‚ or simply because you have to study while everyone else is out having fun while you study? Well I have had many experiences like those. There was a time in which I had moved from New Jersey to Tennessee and I was the new kid on the block. Also there was another addition in my life
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