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Epoxy Resins: Organic compounds containing an epoxide group and characterized by strength and thermosetting properties. Epoxy resins are often used as dental materials.
 JoVE Bioengineering

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples

1Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 2Center for Measurement Standards, Industrial Technology Research Institute, 3National Synchrotron Radiation Research Center, 4Department of Chemistry, National Changhua University of Education


JoVE 53500

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 Science Education: Essentials of Analytical Chemistry

Ion-Exchange Chromatography

JoVE Science Education

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

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 JoVE Medicine

Techniques for Processing Eyes Implanted with a Retinal Prosthesis for Localized Histopathological Analysis: Part 2 Epiretinal Implants with Retinal Tacks

1Bionics Institute, 2Department of Pathology, The University of Melbourne, 3Cochlear Limited, 4Department of Anatomical Pathology, St Vincent's Hospital Melbourne, 5Medical Bionics Department, The University of Melbourne


JoVE 52348

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 JoVE Bioengineering

Characterization Of Multi-layered Fish Scales (Atractosteus spatula) Using Nanoindentation, X-ray CT, FTIR, and SEM

1Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, 2Department of Mechanical Engineering, University of Alabama, 3Environmental Laboratory, U.S. Army Engineer Research and Development Center


JoVE 51535

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 JoVE Neuroscience

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

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 JoVE Bioengineering

A Protocol for Bioinspired Design: A Ground Sampler Based on Sea Urchin Jaws

1Materials Science and Engineering Program, University of California, San Diego, 2Department of Mechanical and Aerospace Engineering, University of California, San Diego, 3Integrative Oceanography Division, Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, 4Marine Biology Research Division, Scripps Institution of Oceanography


JoVE 53554

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 JoVE Bioengineering

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles

1South Western Sydney Clinical School, Faculty of Medicine, University of New South Wales Australia, 2School of Medicine, Western Sydney University, 3Correlative Microscopy Group, Ingham Institute for Applied Medical Research, 4Electron Microscopy Laboratory, Department of Anatomical Pathology, Sydney South West Pathology Service, New South Wales Health Pathology, 5School of Medical Sciences, Faculty of Medicine, University of New South Wales Australia


JoVE 54307

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