source of energy and provide essential lipid nutrients. This experiment determined the components of each eluents. Lipids were based upon their polarity using column chromatography. The eluents used were 9:1 mixture of petroleum ether:ethyl ether‚ 5% methanol in dichloromethane and dichloromethane:methanol:water (1:3:1). The results obtained were analyzed and it showed that the the lipids are eluted by increasing polar solvents. The lipids present in the crude extract were triacylglycerol‚ cholesterol
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Introduction • The problem we are studying was to determine the cellular damage of various concentrations of propanol‚ ethanol‚ methanol‚ NaCL‚ and sodium dodecyl sulfate henceforth known as SDS on Beta vulgaris to ultimately distinguish the ability of each solution to permeate the membrane of the Beta vulgaris. • Beta vulgaris contains a beta cyanin which is a water-soluble red-pigment‚ which remains in a healthy vacuole surrounded by the tonoplast membrane. When we damage the tonoplast membrane
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PROTEINS Abstract The experiment aimed to use the concept of viscosity to study the effects of different denaturants on 1% albumin extract. An Ostwald viscometer was used to measure the flow time of 5 mL of the blank and native protein. These were then denatured by adding 1 mL of denaturant and had their flow time measured. The flow time from the blank to denatured protein is increasing. The specific viscosity and reduced viscosity‚ ηred‚ were calculated from the data obtained. The best denaturant
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Abrasive flow machining 1. Introduction Abrasive flow machining (AFM) was firstly developed fifty years ago by Extrude Hone Corporation‚ USA. By using the liquid viscoelastic material with easy flowability made of polymer and abrasive grains‚ AFM can be used to polish‚ deburr and radius for the workpiece. There are three kinds of AFM: one-way AFM‚ two-way AFM and orbital AFM [1]. In this case to manufacture the cylinder heads‚ consider of two-way AFM is much more widely used and its technology
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ABSTRACT This experiment was conducted to synthesize methyl benzoate form benzoic acid and methanol by using the Fischer esterification method. The Fischer exterification technique is utilized in the academic and industrial settings due to the simplified synthesis and safety parameters of the overall reaction. Both benzoic acid and methanol are relatively cheap to obtain from a commercial source as well as being easy to store with a relatively long shelf life. The Fischer esterification method is
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Fluid 5) Ideal plastic fluid 1. Ideal Fluid: An Ideal Fluid is a fluid that has no viscosity. It is incompressible in nature. Practically‚ no ideal fluid exists. 2. Real Fluid: Real fluids are compressible in nature. They have some viscosity. Examples: Kerosene‚ Petrol‚ Castor oil 3. Newtonian Fluid: Fluids that obey Newton’s law of viscosity are known as Newtonian Fluids. For a Newtonian fluid‚ viscosity is entirely dependent upon the temperature and pressure of the fluid. Examples: water
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VOJNOTEHNIČKI GLASNIK/MILITARY TECHNICAL COURIER‚ 2012.‚ Vol. LX‚ No. 2 IMPORTANCE OF LUBRICANT ANALYSIS Perić R. Sreten‚ University of Defence in Belgrade‚ Military Academy‚ Department of Military Mechanical Engineering‚ Belgrade DOI: 10.2298/vojtehg1202156P FIELD: Mechanical Engineering‚ Engines and Motor Vehicles ARTICLE TYPE: Original Scientific Paper Summary: Monitoring the performance of lubricants in practical application has multiple significance for both the consumer and the lubricant
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the retest used the most efficient and exact method. In the “Volatile Organics” experiment‚ methanol is interpreted as the “unknown waste.” This is displayed through Figure 2‚ where the retention rate is 1.275 minutes and its peak signal is 1.4 mV. The range for methanol due to its similar voltage and retention time‚ when comparing Figure 2a and 2b. Because these chemical mixtures contain acetone‚ methanol‚ and 2-butanone‚ the simplest way to determine the volatility of these chemicals is through
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cooling; after which the mixture is poured onto ice. The solid product will then be isolated by filtration and recrystallized from methanol‚ in which it is very soluable. A.) Materials: 1) .6mL of concentrated sulfuric acid 2) .30g of methyl benzoate 3) Mixture of .2mL of concentrated sulfuric acid and .2 mL of concentrated nitric acid 4) Ice 5) .2 mL ice cold methanol B.) Procedure in Brief: 1) In a 10 x 100 mm reaction tube add .30g of methyl benzoate and .6 mL of concentrated sulfuric
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INTRODUCTION Shaving gel is a viscous‚ clear gel preparation which is applied before shaving in order to soften the beard‚ lubricate the passage of razor over the face and moisturize the skin. Gels have cross-linked system which exhibits no flow in steady state. Desired characteristics of a Shaving Gel: * It should be clear and transparent. * It should have thick consistency but flowable. * It should lather easily when applied with brush. * It should give clean‚ fresh and moisturized
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