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synchrotron infrared spectroscopy in biology and biochemistry
synchrotron infrared spectroscopy in biology and biochemistry

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Introduction to X-Ray Absorption Spectroscopy
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ELECTROPHORESIS
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Chromatography (Principles and Classifications)
Chromatography (Principles and Classifications)

... mixture of as many 10,000 proteins, each of which are made up of the same constituent amino acids.  Proteins differ in size (how many amino acids), charge (how many positively and negatively charged amino acids), and in sequence and presence of specific binding sites on the proteins.  Any techniqu ...
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... ~ Protomer – Identical units of 1 or more chains Understand the general principles for determining amino acid sequences of proteins - 1953, James Watson and Francis Crick deduced the double helix structure of DNA. - 1953, Frederick Sanger worked out the sequence of amino acid residues in the polype ...
Magnetic Fields
Magnetic Fields

... parallel currents attract each other and that opposite currents repel. 1820 - Jean-Baptiste Biot and Felix Savart show that the magnetic force exerted on a magnetic pole by a wire falls off like 1/r and is oriented perpendicular to the wire. 1825 - Ampere publishes his collected results on magnetism ...
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Electric Potential - Nutley Public Schools
Electric Potential - Nutley Public Schools

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2012. 10. 23. (화) 7:00 - 9:30 p.m. ** 1

... (a) Use Coulomb's law to find the field inside and outside the sphere. (b) Use Gauss's law to find the field inside and outside the sphere.. (c) Use the electric field obtained in (a) or (b) to find the potential inside and outside the sphere. (Use infinity as your reference point). (d) Use the solu ...
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Circular dichroism



Circular dichroism (CD) is dichroism involving circularly polarized light, i.e., the differential absorption of left- and right-handed light. Left-hand circular (LHC) and right-hand circular (RHC) polarized light represent two possible spin angular momentum states for a photon, and so circular dichroism is also referred to as dichroism for spin angular momentum. This phenomenon was discovered by Jean-Baptiste Biot, Augustin Fresnel, and Aimé Cotton in the first half of the 19th century. It is exhibited in the absorption bands of optically active chiral molecules. CD spectroscopy has a wide range of applications in many different fields. Most notably, UV CD is used to investigate the secondary structure of proteins. UV/Vis CD is used to investigate charge-transfer transitions. Near-infrared CD is used to investigate geometric and electronic structure by probing metal d→d transitions. Vibrational circular dichroism, which uses light from the infrared energy region, is used for structural studies of small organic molecules, and most recently proteins and DNA.
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