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Potassium Chloride: A white crystal or crystalline powder used in Buffers; Fertilizers; and Explosives. It can be used to replenish Electrolytes and restore Water-electrolyte balance in treating Hypokalemia.

Measurement of Extracellular Ion Fluxes Using the Ion-selective Self-referencing Microelectrode Technique

1Department of Dermatology, Institute for Regenerative Cures, University of California, Davis, 2Departamento de Biologia, Centro de Biologia Molecular e Ambiental, Universidade do Minho, 3Department of Neurology and Center for Neuroscience, University of California, Davis Imaging of Dementia and Aging Laboratory, 4Department of Ophthalmology, Institute for Regenerative Cures, University of California, Davis

JoVE 52782


 Biology

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

1Biogeochemical Sciences Branch, Cold Regions Research and Engineering Laboratory, US Army Engineer Research & Development Center, Hanover, NH, 2Environmental Processes Branch, Environmental Laboratory, US Army Engineer Research & Development Center, Vicksburg, MS, 3Terrestrial and Cryospheric Scienes Branch, Cold Regions Research and Engineering Laboratory, US Army Engineer Research & Development Center, Hanover, NH, 4Biogeochemical Sciences Branch, Cold Regions Research and Engineering Laboratory, US Army Engineer Research & Development Center, Fairbanks, AK

JoVE 54091


 Biology

Engineering 'Golden' Fluorescence by Selective Pressure Incorporation of Non-Canonical Amino Acids and Protein Analysis by Mass Spectrometry and Fluorescence

1Institute of Chemistry L 1, Department of Biocatalysis, Technical University of Berlin, 2Institute of Chemistry PC 14, Department of Bioenergetics, Technical University of Berlin, 3Institute of Chemistry TC 7, Department of Physical Chemistry/Molecular Material Sciences, Technical University of Berlin

Video Coming Soon

JoVE 57017


 JoVE In-Press

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.


 Environmental Science

Real-time Iontophoresis with Tetramethylammonium to Quantify Volume Fraction and Tortuosity of Brain Extracellular Space

1Department of Medicine, University of Virginia, 2Department of Cell Biology, SUNY Downstate Medical Center, 3Neural and Behavioral Science Graduate Program, SUNY Downstate Medical Center, 4Division of Neonatology, University of Virginia, 5Department of Neuroscience and Physiology, New York University School of Medicine,

JoVE 55755


 Neuroscience

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


 Immunology and Infection

Determining the Solubility Rules of Ionic Compounds

JoVE 10197

Source: Laboratory of Dr. Neal Abrams — SUNY College of Environmental Science and Forestry

An ionic compound's solubility can be determined via qualitative analysis. Qualitative analysis is a branch of analytical chemistry that uses chemical properties and reactions to identify the cation or anion present in a chemical compound. While the chemical reactions rely on known solubility rules, those same rules can be determined by identifying the products that form. Qualitative analysis is not typically done in modern industrial chemistry labs, but it can be used easily in the field without the need of sophisticated instrumentation. Qualitative analysis also focuses on understanding ionic and net ionic reactions as well as organizing data into a flow chart to explain observations and make definitive conclusions. Many cations have similar chemical properties, as do the anion counterparts. Correct identification requires careful separation and analysis to systematically identify the ions present in a solution. It is important to understand acid/base properties, ionic equilibria, redox reactions, and pH properties to identify ions successfully. While there is a qualitative test for virtually every elemental and polyatomic ion, the identification process typically begi


 General Chemistry

Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research

1Department of Agricultural and Biological Engineering, Birck-Bindley Physiological Sensing Facility, Purdue University, 2NASA Ames Research Center, 3Department of Chemistry, Pennsylvania State University Hazleton, 4Cooley LLP, 5NASA Life and Physical Sciences, Human Exploration and Operations Mission Directorate, NASA Headquarters

JoVE 50020


 Bioengineering

Creating a Structurally Realistic Finite Element Geometric Model of a Cardiomyocyte to Study the Role of Cellular Architecture in Cardiomyocyte Systems Biology

1Cell Structure and Mechanobiology Group, Department of Biomedical Engineering, University of Melbourne, 2Systems Biology Laboratory, Melbourne School of Engineering, University of Melbourne, 3Department of Biomedical Engineering, University of Melbourne, 4Department of Engineering Science, University of Auckland, 5Advanced Microscopy Facility, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 6School of Medicine, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, 7School of Mathematics and Statistics, Faculty of Science, University of Melbourne, 8ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of Melbourne, 9Living Systems Institute, University of Exeter

Video Coming Soon

JoVE 56817


 JoVE In-Press

Biofunctionalized Prussian Blue Nanoparticles for Multimodal Molecular Imaging Applications

1The Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Medical Center, 2Fischell Department of Bioengineering, University of Maryland, 3Department of Radiology, George Washington University, 4Department of Pediatrics, George Washington University

JoVE 52621


 Bioengineering

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