basic compounds that serve as the building blocks of carbohydrates. Monosaccharides are polyhydroxy aldehydes or ketones; that is‚ they are molecules with more than one hydroxyl group (-OH)‚ and a carbonyl group (C=O) either at the terminal carbon atom (aldose) or at the second carbon atom (ketose). The carbonyl group combines in aqueous solution with one hydroxyl group to form a cyclic compound (hemi-acetal or hemi-ketal). Monosaccharides are classified by the number of carbon atoms in the molecule;
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LEDs… Release only ONE color of light Produce very little heat What is an LED? They are semiconductor devices that can convert electrical energy directly into light due to the nature of the bonding that occurs in the semiconductor solid. Type of bonding is directly related to conductivity of solid. Bonding in Elemental Solids Electronegativity – the ability of an atom to attract electrons to itself. Atoms with low e.n. (metals) don’t hold valence electrons tightly valence
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AMREEN RAHMAN Apt#47‚ 11255-31 Avenue‚ Edmonton‚ AB‚ T6J 3V6 | 514-638-6841 | amreen.rahman@mail.mcgill.ca SUMMARY OF QUALIFICATIONS • Recent Mechanical Engineering graduate with over a year of combined oil & gas and mining experience. • Sharpened analytical and problem solving capabilities through work in academic and industry projects requiring extensive analysis of data to find solutions to problems. • Demonstrated ability to work effectively both in teams and autonomously. • Enthusiastic learner
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SYLLABUS BCHM 100A: INTRODUCTION TO BIOCHEMISTRY FALL 2012 Instructor: Emily Westover‚ westover@brandeis.edu Kosow 108‚ ext. 6-2304 Office Hours: M 11-1‚ W 1-2‚ or by appointment Assistants: Vy Nguyen‚ vnguyen@brandeis.edu Rick Roy‚ rroy@brandeis.edu Chris Wilson‚ cwilson@brandeis.edu Meetings: Lecture 10:00 – 10:50 am‚ MWH‚ location TBA Recitation 7:30 – 9:20 pm‚ H‚ location TBA Textbook: Lehninger Principles of Biochemistry by Nelson and Cox‚ 4th or 5th Ed. Learning
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Bull. Mater. Sci.‚ Vol. 25‚ No. 6‚ November 2002‚ pp. 527–531. © Indian Academy of Sciences. Studies of properties of rubber wood with impregnation of polymer RASHMI R DEVI and T K MAJI* Department of Chemical Sciences‚ Tezpur University‚ Tezpur 784 028‚ India Abstract. Impregnation of rubber wood has been carried out under different conditions by using styrene as grafting monomer and glycidyl methacrylate (GMA) as crosslinker. Properties such as dimensional stability‚ water absorption‚ hardness
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Experiment 9 Thin Layer Chromatography Experiment: 9 Title: Thin Layer Chromatography Introduction: Chemical analysis is conducted on specific analytes (specific substance of interest in a mixture)‚ however it is often found that these analytes must be separated for the chemical analysis to conduct their analysis. Chromatography is a set up of laboratory a technique that is used to separate a chemical mixture. This technique is very useful as it allows us to follow the course of
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Synthesis of Banana Flavor CHEMISTRY 200L EXPT 02 PAGE 01 - 11 Gerome B. Vallejos*‚ Ellis Mika C. Trino‚ Jahn Camille B. Valdez‚ Ariza Yamashita Department of Biological Sciences‚ College of Science Group 11 Corresponding author: gerome_911@yahoo.com Abstract The purpose of this experiment was to synthesize isopentyl acetate via Fischer esterification reaction between acetic anhydride and isoamyl alcohol‚ using concentrated sulfuric acid as a catalyst. This reaction is characterized by the combining
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by lower Rf values. 4. If a molecule has high affinity for the mobile phase‚ how is the Rf value affected? The Rf value will be higher 5. Imagine you are doing a chromatography experiment with a polar solvent and a molecule containing a carbonyl group. Would the Rf value be high or low? Explain. The Rf value would be predicted as being low because it would tend to stick to the paper more. 6. Why must a pencil be used‚ instead of a pen or marker when marking chromatography plates?
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In biology‚ there are four major biological macromolecules that are found in the cell‚ carbohydrates‚ lipids‚ nucleic acid‚ and proteins. Biological macromolecules are also known as organic molecules. Biological macromolecules are very large molecules that are of a key importance to living organisms. Most biological macromolecules are built by joining smaller molecule subunits. Carbohydrates are large groups of organic compounds found in foods such as sugars‚ starches‚ glucose‚ fructose‚ galactose
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Preparation of methyl m-nitrobenzoate by nitration using methyl benzoate‚ nitric acid‚ and sulfuric acid Aileen Quintana TA: Sijie Tues/Thurs 11:50 42067 Introduction: The purpose of this lab was to explore the concepts of electrophilic aromatic substitution‚ specifically nitration by synthesizing methyl m-nitrobenzoate using methyl benzoate‚ nitric acid and sulfuric acid. This nitration is a type of electrophilic aromatic substitution. A
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