SYNTHESIS AND CHARACTERIZATION OF HIGHLY CROSSLINKED HYALURONAN HYDROGELS Newell R. Washburn1‚ Sidi A. Bencherif1‚ Abiraman Srinivasan2‚ Jeffrey O. Hollinger2‚ Ferenc Horkay3‚ Krzysztof Matyjaszewski1 Departments of 1Chemistry and 2Biomedical Engineering Carnegie Mellon University‚ Pittsburgh‚ PA 15213 3 Laboratory of Integrative and Medical Biophysics National Institutes of Health‚ NICHD 13 South Drive‚ Bethesda‚ MD 20892 Introduction Methacrylation of hyaluronic acid (HA) with glycidyl methacrylate
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Post-Lab Report for Experiment 2: Cooperative Identification of an organic Solid October 6‚ 2013 Introduction: This experiment was focused on the cooperative identification of organic compound by its chemical properties such as: slow melting point‚ mixed melting point‚ Rf values in TLC experiment‚ IR spectrum analysis‚ and H NMR spectra. Such data can provide the the identity of functional groups and the identity of the compound itself. In this experiment
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Study Guide: Exam 1 1. How many different kinds of protons are present in each of the following compounds? A. a: 4; b: 4; c: 4 B. a: 4; b: 4; c: 5 C. a: 3; b: 3; c: 5 D. a: 3; b: 4; c: 5 E. a: 4; b: 3; c: 5 2. Which of the labeled hydrogens absorbs furthest upfield in the NMR? A. Ha B. Hb C. Hc D. Hd E. He 3. Which of the following compounds does not give a singlet in its NMR spectrum? A. A B. B C. C 4. Which of the circled protons in the molecules below would absorb furthest
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Brandon Physics‚ Period 1 23 May‚ 2014 Resonance Lab Purpose: To determine the speed of sound using the resonance method‚ temperature method and percent error. Hypothesis: If the temperature of the room’s 20 degrees C‚ then using the temperature method‚ the speed of sound is 344m/s. Vs – Vo + 0.6m/s T / C = 332 m/s + .6 m/s (20 C) / C = 344 m/s Conclusion: Using the resonance method the speed was 330 m/s. using the average temperature
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typically associated with dinoflagellates as a form of a chemical reaction that happens within those organisms and the product is light. Bioluminescence Imaging is similar in that it is a byproduct of light emission‚ however it has a greater importance than just giving off light or being a relatively interesting chemical reaction. Bioluminescence Imaging is a technology that has been developed recently in the last few years and allows for real-time analysis of diseases at the molecular level‚ using an
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(+120°C) Excellent Excellent *EMI–Electro Magnetic Interference Traditional velocity sensors are of a mechanical design that uses an electromagnetic (coil and magnet) system to generate the velocity signal. Recently‚ hardier piezoelectric velocity sensors (internally integrated accelerometers) have gained in popularity due to their improved capabilities and more rugged and smaller size design. A comparison between the traditional coil and magnetic velocity sensor and the modern piezoelectric
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Note: This copy is for your personal‚ non-commercial use only. To order presentation-ready copies for distribution to your colleagues or clients‚ use the RadioGraphics Reprints form at the end of this article. EDUCATION EXHIBIT 1891 Imaging of Ambiguous Genitalia: Classification and Diagnostic Approach1 CME FEATURE See accompanying test at http:// www.rsna.org /education /rg_cme.html Govind B. Chavhan‚ MD‚ DNB • Dimitri A. Parra‚ MD • Kamaldine Oudjhane‚ MD • Stephen F. Miller‚ MD •
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Magnetic Fields PHY 114 Lab Report 10/23/2013 Abstract: The purpose of this experiment was to surrounding a magnet there is a magnetic field. The magnetic field is analogous to the electric field that exists in the space around electric charges. Like the electric field‚ the magnetic field has both a magnitude and a direction. The direction of the magnetic field at any point in space is the direction indicated by the north pole of a small compass needle placed at that point. Since electric
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generation the physical means such as gravity‚ vacuum or magnetic field is used for stabilization of the free flowing dry moulding materials. The development of unbounded casting process improves flexibility and enhances mould ability. The concept of unbounded casting is to change the kind of binder or to avoid substantial binder. Magnetic moulding is a type of unbounded moulding process in which a dry and free flowing magnetic steel shots or granules are used as mould materials
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TYPES OF MAGNETIC MATERIALS Paramagnetic materials have a small‚ positive susceptibility to magnetic fields. These materials are slightly attracted by a magnetic field and the material does not retain the magnetic properties when the external field is removed. Paramagnetic properties are due to the presence of some unpaired electrons‚ and from the realignment of the electron paths caused by the external magnetic field. Paramagnetic materials include magnesium‚ molybdenum‚ lithium‚ and tantalum
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