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Water Supply: Source, means, or process of supplying water (as for a community) usually including reservoirs, tunnels, and pipelines and often the watershed from which the water is ultimately drawn. (Webster, 3d ed)
 JoVE Bioengineering

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

1Department of Bioengineering & Therapeutic Sciences, University of California, San Francisco, 2Department of Obstetrics, Gynecology & Reproductive Sciences, University of California, San Francisco, 3Keck School of Medicine, University of Southern California


JoVE 51745

 Science Education: Essentials of Physics II

Ohm's Law

JoVE Science Education

Source: Andrew Duffy, PhD, Department of Physics, Boston University, Boston, MA

This experiment investigates Ohm's law, which relates current, voltage, and resistance.

One goal of the experiment is to become familiar with circuit diagrams and the terminology involved in basic circuits, such as resistor, resistance, current, voltage, and power supply. By the end of the experiment, familiarity is gained with how to wire up a circuit and how to measure both the current passing through a circuit component and the potential difference, or voltage, across it. In a circuit, a battery or power supply provides a voltage measured in volts (V) that makes the charge flow. Other elements in the circuit, such as light bulbs or resistors (which are often just long narrow wires wound into coils) limit the rate at which the charge flows. The rate of flow of the charge is known as current measured in amperes (A), or amps for short, and the degree to which resistors and light bulb filaments limit the flow is known as their resistance measured in ohms (Ω). This experiment involves an exploration of Ohm's law, which relates voltage, current, and resistance. This experiment also explores the difference between a basic circuit component called a resistor, a

 JoVE Bioengineering

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

 JoVE In-Press

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

Video Coming Soon

JoVE 56299

 JoVE Chemistry

CN-GELFrEE - Clear Native Gel-eluted Liquid Fraction Entrapment Electrophoresis

1Departments of Chemistry and Molecular Biosciences, Chemistry of Life Processes Institute, Proteomics Center of Excellence, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, 2Institute of Chemistry, Proteomics Unit, Federal University of Rio de Janeiro, 3Department of Cell Biology, Brazilian Center for Protein Research, Laboratory of Biochemistry and Protein Chemistry, University of Brasilia


JoVE 53597

 JoVE In-Press

Analysis of Spinal Cord Blood Supply Combining Vascular Corrosion Casting and Fluorescence Microsphere Technique: A Feasibility Study in an Aortic Surgical Large Animal Model

1Cardiovascular Surgery, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, 2Anesthesiology and Intensive Care, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg

Video Coming Soon

JoVE 56222

 JoVE Medicine

Ultrasound Assessment of Flow-Mediated Dilation of the Brachial and Superficial Femoral Arteries in Rats

1Department of Internal Medicine, University of Utah, 2Department of Kinesiology and Health Education, University of Texas at Austin, 3Division of Nephrology and Hypertension, University of Utah, 4Department of Biochemistry, University of Utah, 5Department of Exercise and Sport Science, University of Utah, 6Geriatric Research Education and Clinical Center, Department of Veterans Affairs


JoVE 54762

 JoVE Environment

Functionalization and Dispersion of Carbon Nanomaterials Using an Environmentally Friendly Ultrasonicated Ozonolysis Process

1Aerospace Division, Defence Science and Technology Group, 2Maritime Division, Defence Science and Technology Group, 3Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, 4Department of Mechanical Engineering, University of Delaware, 5Department of Materials Science and Engineering, University of Delaware, 6Center for Composite Materials, University of Delaware


JoVE 55614

 JoVE Developmental Biology

Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development

1Department of Biochemistry, University of Illinois at Urbana-Champaign, 2Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, 3Neuroscience Program, University of Illinois at Urbana-Champaign, 4Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign


JoVE 55823

 JoVE Bioengineering

Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol

1Bioenergy Research Unit, National Center for Agricultural Utilization Research, 2Mycotoxin Prevention and Applied Microbiology Research Unit, National Center for Agricultural Utilization Research, 3Chemical Engineering and Material Science, Great Lakes Bioenergy Center, Michigan State University


JoVE 54227

 JoVE Bioengineering

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

 JoVE In-Press

Metabolic Support of Excised, Living Brain Tissues During Magnetic Resonance Microscopy Acquisition

1Department of Neuroscience, University of Florida, 2McKnight Brain Institute, University of Florida, 3Department of Biomedical Engineering, University of Florida, 4Center for Functionally Integrative Neuroscience, Aarhus University, 5Department of Radiology, University of Florida, 6National High Magnetic Field Laboratory, Florida State University

Video Coming Soon

JoVE 56282

 JoVE Bioengineering

The Arteriovenous (AV) Loop in a Small Animal Model to Study Angiogenesis and Vascularized Tissue Engineering

1Department of Plastic and Hand Surgery and Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), 2Genetic Engineering and Biotechnology Institute for Postgraduate Studies, Baghdad University, 3Department of Plastic, Hand and Microsurgery, Sana Klinikum Hof GmbH


JoVE 54676

 JoVE Neuroscience

Subpial Adeno-associated Virus 9 (AAV9) Vector Delivery in Adult Mice

1Neuroregeneration Laboratory, Department of Anesthesiology, University of California, San Diego, 2Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 3Department of Neurosurgery, University of California, San Diego, 4Institute of Neurobiology, Slovak Academy of Sciences


JoVE 55770

 JoVE Bioengineering

Porous Silicon Microparticles for Delivery of siRNA Therapeutics

1Department of Nanomedicine, Houston Methodist Research Institute, 2MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, 3Pediatrics Department of Union Hospital, Huazhong University of Science and Technology, 4CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience & Technology of China, 5Department of Medicine, Weill Cornell Medical College, 6Department of Cell and Developmental Biology, Weill Cornell Medical College


JoVE 52075

 JoVE In-Press

Ileectomy-induced Bile Overaccumulation in Mouse Intestine

1Department of Medicine, Case Cardiovascular Research Institute, Case Western Reserve University, 2Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, 3Institute for Transformative Molecular Medicine, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center

Video Coming Soon

JoVE 55728

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