J Polym Res (2012) 19:16 DOI 10.1007/s10965-012-0016-1 ORIGINAL PAPER Influence of matrices chemical nature on the dynamic mechanical and dielectric properties of rubber composites comprising conductive carbon black Omar A. Al-Hartomy & Ahmed A. Al-Ghamdi & Falleh Al-Solamy & Nikolay Dishovsky & Mihail Mihaylov & Milcho Ivanov & Farid El-Tantawy Received: 14 February 2012 / Accepted: 22 October 2012 # Springer Science+Business Media Dordrecht 2012 Abstract The study presents the effect
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Gel electrophoresis Gel electrophoresis is a method for separation and analysis of macromolecules (DNA, RNA and proteins) and their fragments, based on their size and charge. It is used in clinical chemistry to separate proteins by charge and/or size (IEF agarose, essentially size independent) and in biochemistry and molecular biology to separate a mixed population of DNA and RNA fragments by length, to estimate the size of DNA and RNA fragments or to separate proteins by charge.[1] Nucleic acid
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AST 309 part 2: Extraterrestrial Life The Origin and Evolution of Life on Earth Overview • The formation of Earth • Pre-biotic chemistry (Miller-Urey exp.) • First evidence for early life • The evolution of life • Extreme life on Earth: lessons for astrobiology A timeline for the very early history of the Earth The formation of Earth: The Earth formed over ~50 Myr via planetesimal accretion Earth differentiation: The iron "drops" follow gravity and accumulate towards the core. Lighter materials
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Lab: 3—Chemical Composition of Cells: Sugars Purpose of this lab: To learn about sugars and the test used to identify them. Introduction The organic macromolecules known as sugars are a type of carbohydrate. Carbohydrates are composed of monosaccharides, which are single, sugar unit monomers. Two sugar units linked together are known as a disaccharide. In this lab, we conducted tests on various substances with Bendict’s solution to determine which sample contained sugars.
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lacks carbon and C-H bond -Carbohydrate- organic molecule made up of sugars -Protein- organic molecule made up of amino acid -Lipids- organic molecule that repels water -Nucleic Acids- organic molecule made of nucleotides DNA/RNA -Macromolecules- organic molecules made up of living organisms (carbohydrates,protiens,nucleic acids) -Monomer- one chemical subunit -Polymer- molecule made up of individual subunits -Monosaccharide- monomer of a carbohydrate -Amino Acid- monomer
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contained in the lysosomes are formed by ribosomes and are then packaged by the Golgi apparatus. Lysosomes (which are common in animal cells but are rare in plant cells) contain a range of hydrolytic enzymes which take part in the digestion of macromolecules such as nucleic acids, proteins and polysaccharides. These hydrolytic enzymes are only active within the acidic interior of the lysosome. This acid-dependency of the enzymes prevents the self-deterioration of the cell in case of lysosomal leakage
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total protein present. The portion containing the greatest concentration of the desired enzyme would be kept for further fractionation and testing. Use of substances such as ammonium sulfate or polyethylene glycol that compete for water with the macromolecules could then be employed. This process, known as "salting out" the organic material from water by varying the solvent ratio or through doing another assay measuring the specific activity. Again, the portion containing the lesser amount would be
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General Introduction Nucleic acids are large biological molecules essential for all known forms of life. They include DNA (deoxyribonucleic acid) and RNA(ribonucleic acid). Together with proteins, nucleic acids are the most important biological macromolecules; each is found in abundance in all living things, where they function in encoding, transmitting and expressing
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deformation of an elastic solid and the phenomenon of viscoelasticity. This is a topic of special interest in the study of structural biomolecules such as bone and blood vessels. We conclude the chapter with a discussion of the structure and dynamics of macromolecules, specifically illustrating how to apply Newton’s second law to the difficult problem of determining the molecular motions (here in one dimension) of the constituent atoms of a protein. 1. THE CONSTANT FORCE Very frequently in dealing with
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Shier, Butler, and Lewis: Human Anatomy and Physiology, 12th ed. Chapter 1: Introduction to Human Anatomy and Physiology Chapter 1: Introduction to Human Anatomy and Physiology I. Introduction A. The interests of our earliest ancestors most likely concerned injuries and illness because healthy bodies demand little attention from their owners. B. Primitive people certainly suffered from occasional aches and pains, injuries, bleeding, broken bones, and diseases. C. Before agriculture
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