Medicinal Plants and Anti-oxidant Properties. An antioxidant can be defined as “any substance that‚ when present in low concentrations compared to that of an oxidisable substrate‚ significantly delays or inhibits the oxidation of that substrate” (Young and Woodside‚ 2001). It is well known that oxidant by-products of normal metabolism such as free radicals and reactive oxygen species (ROS) in excess can cause extensive damage to DNA‚ proteins‚ and lipids. Under stress‚ the body produces more ROS
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Physical Chemistry CHM2330 Experiment F- Raoult ’s Law Experiment By: Sanah Assaad Student Number: 5267864 Partner: Jihad Arafa T.A: Didier University of Ottawa March 25‚ 2010 Objective: The purpose of this experiment is to study the total vapour pressure of ideal or non-ideal mixtures of two volatile liquids as a function of chemical composition. Introduction: For ideal mixtures of volatile liquids the vapour pressure of any given mixture may be obtained by applying Raoult
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Property Law‚ The Inside Look Azrielle D. Washington July 20‚ 2014 LSTD506 “Property law has long played a central role in political and moral philosophy. Philosophers dealing with property have tended to follow the unanimity that property has no special content‚ but is a protean construct; a mere placeholder for theories aimed at questions of distributive justice and efficiency” (Joel Feinberg & Hyman Gross‚ Philosophy of Law (1975). Until recently there has been a relative absence of serious
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Monica Perez Experiment 8: Acetylsalicylic Acid Experiment 01/25/2013 CHM Lab- 2211 Sec 0016 Instructor: Jennifer Reed Introduction: Commonly used as Aspirin‚ acetylsalicylic acid is an analgesic (pain reliever)‚ which is one of the products of the esterification reaction between salicylic acid and acetic anhydride. This esterification occurs since the hydroxyl group from the salicylic acid reacts with acetic anhydride to form an ester. In this experiment‚ we will be able to recreate
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alcohols). Esters usually have pleasant‚ fruit-like odors and are the chemicals responsible for the odors and flavors of many fruits (oranges‚ bananas‚ pineapples) and flowers. In most cases‚ such natural products get their properties from a mixture of organic compounds. In this experiment you will prepare two esters of o-hydroxybenzoic acid‚ more commonly known as salicylic acid. One of the esters‚ acetylsalicylic acid‚ is aspirin‚ the common analgesic. We will synthesize aspirin by mixing salicylic acid
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MECHANICAL PROPERTIES OF FLUIDS 1 Torricelli’s barometer used mercury. Pascal duplicated it using French wine of density 984 kg m-3. Determine the height of the wine column for normal atmospheric pressure. 2 A vertical off-shore structure is built to withstand a maximum stress of 109 Pa. Is the structure suitable for putting up on top of an oil well in the ocean? Take the depth of the ocean to be roughly 3 km‚ and ignore ocean currents. 3 A hydraulic automobile lift is designed to lift cars with
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Biotechnology‚ Mapua Institute of Technology ABSTRACT In this experiment‚ solubility class of various organic compounds are to be determined. The main objective of the experiment is to identify an unknown compound through the use of preliminary tests such as examination of physical state‚ color‚ odor‚ and ignition properties. Also‚ solubility tests were used to further examine an unknown compound’s solubility class. In this experiment‚ the apparatus used are micro test tubes and droppers for mixing
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EXPERIMENT NO-1 AIM- To determine the frequency of A. C. mains by using an electric vibrator. APPARATUS- Electric vibrator‚ table lamp‚ pulley‚ weight box‚ fishing cord‚ a. c. source. THEORY- when a cord of mass per unit length m is connected to the vibrating rod of the vibrator and stretched with a tension T‚ the cord vibrators in segments. If the length of the cord is then adjusted until the nodes are clearly marked‚ the frequency of the stretched string is the same as of the vibrating rod which
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Is PVC an acceptable vent material for flue gases? Installing a new water heater or furnace can be tricky for the novice HVAC technician. There are many checks that need to be done and codes that need to be followed. While not being complete with the internals can lead to a harmful situation‚ one of the most important decisions that you will have to make is what material you should make the flue out of. Most furnace flues are made out of a metal material which is a proper decision do the high
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Name: Lawrence D. Mandras Date: August 17‚ 2013 Rating:_____ Yr. & Course: BSED-IV Laboratory Experiment no. 2 The Living Plant Cell Objectives: * To study the different types of plant cells. * To observe plant cells as to their shapes‚ structures and function. Materials: Microscope cover slip glass slide water onion Iodine soln. hydrilla salt tomato razor blade Medicinal dropper epidermal tissue of rhoeo-discolor
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