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Static Electricity: The accumulation of an electric charge on a object
 JoVE Bioengineering

Adapting the Electrospinning Process to Provide Three Unique Environments for a Tri-layered In Vitro Model of the Airway Wall

1Division of Drug Delivery and Tissue Engineering, University of Nottingham, 2Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, 3Division of Immunology and Allergy, School of Molecular Medical Sciences, University of Nottingham, 4Division of Respiratory Medicine, School of Clinical Sciences, University of Nottingham, 5NIHR Respiratory Biomedical Research Unit, University of Leicester, 6School of Sport, Exercise, and Health Sciences, Loughborough University


JoVE 52986

 JoVE Immunology and Infection

Cortical Actin Flow in T Cells Quantified by Spatio-temporal Image Correlation Spectroscopy of Structured Illumination Microscopy Data

1Department of Physics and Randall Division of Cell and Molecular Biophysics, King's College London, 2Academic Department of Rheumatology, Centre for Molecular and Cellular Biology of Inflammation, Division of Immunology, Infection and Inflammatory Disease, King's College London, 3ARC Centre for Advanced Molecular Imaging, Australian Centre for NanoMedicine, University of New South Wales Australia, 4Departments of Chemistry and Physic, McGill University


JoVE 53749

 JoVE Bioengineering

Cell Patterning on Photolithographically Defined Parylene-C: SiO2 Substrates

1Centre for Integrative Physiology, School of Biomedical Sciences, The University of Edinburgh, 2Edinburgh Cancer Research Centre, Institute of Genetics and Molecular Medicine, Western General Hospital, 3School of Engineering, Institute for Integrated Micro and Nano Systems, The University of Edinburgh


JoVE 50929

 JoVE Biology

Bioelectric Analyses of an Osseointegrated Intelligent Implant Design System for Amputees

1Department of Veteran Affairs, 2Department of Bioengineering, University of Utah, 3Scientific Computing and Imaging Institute , University of Utah, 4Department of Physical Medicine and Rehabilitation, University of Utah, 5Department of Orthopaedics, University of Utah


JoVE 1237

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 Science Education: Essentials of Environmental Science

Proton Exchange Membrane Fuel Cells

JoVE Science Education

Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University

The United States consumes a large amount of energy – the current rate is around 97.5 quadrillion BTUs annually. The vast majority (90%) of this energy comes from non-renewable fuel sources. This energy is used for electricity (39%), transportation (28%), industry (22%), and residential/commercial use (11%). As the world has a limited supply of these non-renewable sources, the United States (among others) is expanding the use of renewable energy sources to meet future energy needs. One of these sources is hydrogen. Hydrogen is considered a potential renewable fuel source, because it meets many important criteria: it’s available domestically, it has few harmful pollutants, it’s energy efficient, and it’s easy to harness. While hydrogen is the most abundant element in the universe, it is only found in compound form on Earth. For example, it is combined with oxygen in water as H2O. To be useful as a fuel, it needs to be in the form of H2 gas. Therefore, if hydrogen is to be used as a fuel for cars or other electronics, H2 needs to be made first. Thusly, hydrogen is often called an “energy carrier” rather than a “fuel.”

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 JoVE Bioengineering

Engineering 3D Cellularized Collagen Gels for Vascular Tissue Regeneration

1Laboratory for Biomaterials and Bioengineering, Department Min-Met-Materials Eng & CHU de Québec Research Center, Canada Research Chair I for the Innovation in Surgery, Laval University, 2NSERC CREATE Program for Regenerative Medicine (NCPRM), Laval University, 3Department Electronics, Information and Bioengineering, Politecnico di Milano, 4Department of Chemical and Materials Engineering, University of Alberta, 5National Institute for Nanotechnology, National Research Council (Canada), 6Department of Chemical and Biochemical Engineering, University of Western Ontario


JoVE 52812

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 JoVE Developmental Biology

Large-Scale Production of Cardiomyocytes from Human Pluripotent Stem Cells Using a Highly Reproducible Small Molecule-Based Differentiation Protocol

1Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, 2Developmental and Stem Cell Biology Division, Victor Chang Cardiac Research Institute, 3St. Vincent´s Clinical School, Faculty of Medicine, University of New South Wales, 4School of Biotechnology and Biomolecular Sciences, University of New South Wales, 5Department of Developmental Biology, University of Science and Culture, 6Heart Centre for Children, The Children´s Hospital at Westmead, 7Sydney Medical School, University of Sydney, 8Department of Developmental Biology, University of Science and Culture, Tehran, Iran


JoVE 54276

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 JoVE Environment

Measurement of Greenhouse Gas Flux from Agricultural Soils Using Static Chambers

1Office of Sustainability, University of Wisconsin-Madison, 2Department of Soil Science, University of Wisconsin-Madison, 3Department of Agronomy, University of Wisconsin-Madison, 4Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, 5USDA-ARS Dairy Forage Research Center, 6USDA-ARS Pasture Systems Watershed Management Research Unit


JoVE 52110

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 JoVE Bioengineering

A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds

1Department of Tissue Engineering and Regenerative Medicine (TERM), University Hospital Wuerzburg, 2Department of Cardiothoracic Surgery, University Hospital Wuerzburg, 3Department of Bioinformatics, University Wuerzburg, 4Translational Center Wuerzburg, Fraunhofer Institute Interfacial Engineering and Biotechnology IGB


JoVE 53885

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 JoVE Bioengineering

In Situ Mapping of the Mechanical Properties of Biofilms by Particle-tracking Microrheology

1Interdisciplinary Graduate School, Nanyang Technological University, 2Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, 3School of Biological Sciences, Nanyang Technological University, 4Centre for Marine Bio-Innovation, University of New South Wales, 5School of Biological, Earth and Environmental Sciences, University of New South Wales, 6School of Biotechnology and Biomolecular Sciences Sciences, University of New South Wales


JoVE 53093

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 Science Education: Essentials of Experimental Psychology

Pilot Testing

JoVE Science Education

Source: Laboratories of Gary Lewandowski, Dave Strohmetz, and Natalie Ciarocco—Monmouth University

In any experiment researchers have the challenge of creating experiences for participants that are consistent (i.e., reliable) and authentic (i.e., valid). Yet there are many ways to manipulate any one variable. For example, if you want participants to feel sad, you can have them think of their own sad memory, watch a sad video, or read a sad story. Researchers must find the best way to operationalize a psychological construct in order to produce the most effective manipulation possible. Often, before running the main study, researchers will pilot test (i.e., try out) their manipulations to check their effectiveness. This video demonstrates how to operationalize the same independent variable (acute stress) in three different ways. Specifically, this study seeks to identify the best sound (static, ticking clock, or crying baby) to play during a difficult task (solving complex math problems) to optimally manipulate stress. Psychological studies often use higher sample sizes than studies in other sciences. A large number of participants helps to ensure that the population under study is

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