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Hydrofluoric Acid: Hydrofluoric acid. A solution of hydrogen fluoride in water. It is a colorless fuming liquid which can cause painful burns.
 JoVE Chemistry

Preparation of Mica and Silicon Substrates for DNA Origami Analysis and Experimentation

1Department of Chemistry and Biochemistry, University of Notre Dame, 2Department of Chemical and Biomolecular Engineering, University of Notre Dame, 3Department of Chemistry, Physics, and Engineering Studies, Chicago State University, 4Department of Technology, Ivy Tech Community College, South Bend, Indiana


JoVE 52972

 JoVE Engineering

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

1Department of Electrical and Computer Engineering, University of California, Davis, 2Digital Light Projection (DLP) Technology Development, Texas Instruments, 3Birck Nanotechnology Center and the Department of Electrical and Computer Engineering, Purdue University


JoVE 51251

 Science Education: Essentials of Environmental Science

Soil Nutrient Analysis: Nitrogen, Phosphorus, and Potassium

JoVE Science Education

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

In this experiment, three soil macronutrients are chemically extracted, combined with color-based reagents, then analyzed using color to determine the nutrient concentration present in the soil sample.

Nitrogen, phosphorus, and potassium are the main components of soil fertilizer. These methods isolate each nutrient from the soil into a solution that can be analyzed using turbidity and color to determine the concentration of nutrients present in the soil sample. Knowing present concentration informs environmental scientists of a nutrient deficiency or surplus in soils used to support plant production, and also provides general insight into basic biogeochemical cycles of an ecosystem.

 JoVE Bioengineering

Polymeric Microneedle Array Fabrication by Photolithography

1Department of Pharmacy, National University of Singapore, 2Singapore University of Technology and Design, 3Institute of Bioengineering and Nanotechnology, Agency for Science, Technology and Research (A*STAR), 4Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 5Mechanobiology Institute, National University of Singapore


JoVE 52914

 JoVE Bioengineering

Endothelialized Microfluidics for Studying Microvascular Interactions in Hematologic Diseases

1Department of Pediatrics, Emory University School of Medicine, 2Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 3Aflac Cancer Center and Blood Disorders Service of Children's Healthcare of Atlanta, 4Winship Cancer Institute of Emory University


JoVE 3958

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 JoVE Chemistry

Construction of Models for Nondestructive Prediction of Ingredient Contents in Blueberries by Near-infrared Spectroscopy Based on HPLC Measurements

1United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 2Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3Institute of Agriculture, Tokyo University of Agriculture and Technology


JoVE 53981

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 JoVE Immunology and Infection

Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins

1Department of Biology, San Diego State University, 2Computational Science Research Center, San Diego State University, 3Bioinformatics and Medical Informatics Research Center, San Diego State University, 4Department of Mathematics and Statistics, San Diego State University, 5Department of Computer Science, San Diego State University, 6Mathematics and Computer Science Division, Argonne National Laboratory, 7SPARC Committee, Broad Institute


JoVE 52854

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 JoVE Biology

Protocols for Implementing an Escherichia coli Based TX-TL Cell-Free Expression System for Synthetic Biology

1Department of Biology, California Institute of Technology, 2Department of Bioengineering, California Institute of Technology, 3Synthetic Biology Center, Department of Bioengineering, Massachusetts Institute of Technology, 4School of Physics and Astronomy, University of Minnesota


JoVE 50762

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 JoVE Medicine

Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport

1Department of Surgery, University of Maryland School of Medicine, 2Department of Medicine, University of Maryland School of Medicine, 3Department of Radiology, University of Maryland School of Medicine, 4Food and Drug Administration, 5Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 6VA Maryland Health Care System


JoVE 54597

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