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Acrylic Resins:

Acrylic Resin Molding Based Head Fixation Technique in Rodents

1Department of Anatomy, School of Medicine and Brain Science and Engineering Institute, Kyungpook National University, 2Department of Pharmacology, School of Dentistry and Brain Science and Engineering Institute, Kyungpook National University, 3Department of Pharmacology, School of Medicine and Brain Science and Engineering Institute, Kyungpook National University

JoVE 53064


 Neuroscience

Palladium-Catalyzed Cross Coupling

JoVE 10353

Source: Vy M. Dong and Faben Cruz, Department of Chemistry, University of California, Irvine, CA

This experiment will demonstrate the concept of a palladium-catalyzed cross coupling. The set-up of a typical Pd-catalyzed cross coupling reaction will be illustrated. Pd-catalyzed cross coupling reactions have had a profound effect on how synthetic chemists create molecules. These reactions have enabled chemists to construct bonds in new and more efficient ways. Such reactions have found widespread applications in the fine chemical and pharmaceutical industries. Pd-catalyzed cross coupling reactions add another tool to the chemist's toolbox for constructing carbon-carbon bonds, which are central to organic chemistry. The combination of the importance of making carbon-carbon bonds and the impact of Pd-catalyzed cross coupling have resulted in these reactions being the subject of the 2010 Nobel Prize in Chemistry. Ei-ichi Negishi, one of the recipients of the 2010 Nobel Prize in chemistry, explained in his Nobel lecture that one of his motivations for developing this chemistry was to develop "widely applicable straightforward Lego-like methods for hooking up two different organic groups".


 Organic Chemistry II

Polymerization

JoVE 10357

Source: Vy M. Dong and Jan Riedel, Department of Chemistry, University of California, Irvine, CA

Polymers are made from macromolecules, which are composed of repeating units (the so called monomeric units). In our modern world, polymers play an important role. One of the first important polymers was nylon, which is a polyamide. It found widespread application in tooth brushes and stockings.


 Organic Chemistry II

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Electrotaxis Studies of Lung Cancer Cells using a Multichannel Dual-electric-field Microfluidic Chip

1Research Center for Applied Sciences, Academia Sinica, 2Institute of Biophotonics, National Yang-Ming University, 3Biophotonics & Molecular Imaging Research Center (BMIRC), National Yang-Ming University, 4Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, 5Ph.D. Program in Microbial Genomics, National Chung Hsing University

JoVE 53340


 Bioengineering

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Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests

1Department of Civil, Construction, and Environmental Engineering, North Carolina State University, 2Department of Plant and Microbial Biology, North Carolina State University

JoVE 55545


 Bioengineering

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Ion-Exchange Chromatography

JoVE 10269

Source: Laboratory of Dr. B. Jill Venton - University of Virginia

Ion-exchange chromatography is a type of chromatography that separates analytes based on charge. A column is used that is filled with a charged stationary phase on a solid support, called an ion-exchange resin. Strong cation-exchange chromatography preferentially separates out cations by using a negatively-charged resin while strong anion-exchange chromatography preferentially selects out anions by using a positively-charged resin. This type of chromatography is popular for sample preparation, for example in the cleanup of proteins or nucleic acid samples. Ion-exchange chromatography is a two-step process. In the first step, the sample is loaded onto the column in a loading buffer. The binding of the charged sample to the column resin is based on ionic interactions of the resin to attract the sample of the opposite charge. Thus, charged samples of opposite polarity to the resin are strongly bound. Other molecules that are not charged or are of the opposite charge are not bound and are washed through the column. The second step is to elute the analyte that is bound to the resin. This is accomplished with a salt gradient, where the amount of salt in the buffer is slowly increased. Fractions are collected at the end of the column as


 Analytical Chemistry

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Contextual and Cued Fear Conditioning Test Using a Video Analyzing System in Mice

1Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, 2Japan Science and Technology Agency, Core Research for Evolutionary Science and Technology (CREST), 3Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, National Institutes of Natural Sciences

JoVE 50871


 Behavior

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Environmentally-controlled Microtensile Testing of Mechanically-adaptive Polymer Nanocomposites for ex vivo Characterization

1Advanced Platform Technology Center, Rehabilitation Research and Development, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, 2Department of Biomedical Engineering, Case Western Reserve University, 3Department of Electrical Engineering and Computer Science, Case Western Reserve University

JoVE 50078


 Bioengineering

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A Wireless, Bidirectional Interface for In Vivo Recording and Stimulation of Neural Activity in Freely Behaving Rats

1Behavioral Neuroscience, Experimental and Biological Psychology, Philipps-Universität Marburg, 2Behavioral Neurosciences Institute (INeC), 3Thomas RECORDING GmbH, 4Department of Neurophysics, Philipps-Universität Marburg

JoVE 56299


 Behavior

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