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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.

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


 Chemistry

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


 Engineering

Soil Nutrient Analysis: Nitrogen, Phosphorus, and Potassium

JoVE 10077

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.


 Essentials of Environmental Science

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


 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


 Bioengineering

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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


 Chemistry

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Production of Chemicals by Klebsiella pneumoniae Using Bamboo Hydrolysate as Feedstock

1Lab of Biorefinery, Shanghai Advanced Research Institute, Chinese Academy of Sciences, 2University of Chinese Academy of Sciences, 3Biorefinery Research Center, Jeonbuk Branch Institute, Korea Research Institute of Bioscience & Biotechnology (KRIBB), 4School of Life Science and Technology, ShanghaiTech University

JoVE 55828


 Bioengineering

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