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Data Collection: Systematic gathering of data for a particular purpose from various sources, including questionnaires, interviews, observation, existing records, and electronic devices. The process is usually preliminary to statistical analysis of the data.
 JoVE Behavior

Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation

1Neuropsychiatric Institute, University of California, Los Angeles, 2Laboratory of Neuroimaging Technology, University of California, Los Angeles, 3Yale School of Medicine, 4Korean Basic Science Institute


JoVE 3298

 JoVE Behavior

Simultaneous Scalp Electroencephalography (EEG), Electromyography (EMG), and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding

1Functional and Applied Biomechanics Group, National Institutes of Health, 2Laboratory for Non-invasive Brain-Machine Interface Systems, Department of Electrical and Computer Engineering, University of Houston, 3Department of Health and Human Performance, University of Houston, 4Center for Neuromotor & Biomechanics Research, University of Houston, 5Department of Biomedical Engineering, University of Houston


JoVE 50602

 JoVE Medicine

Quantification of the Immunosuppressant Tacrolimus on Dried Blood Spots Using LC-MS/MS

1iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus, 2Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, 3Food and Drug Administration (FDA), Center of Drug Evaluation Research - Office of Generic Drugs, 4Transplant Clinical Research, University of Cincinnati


JoVE 52424

 JoVE Medicine

Rapid Fractionation and Isolation of Whole Blood Components in Samples Obtained from a Community-based Setting

1Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 2Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, 3Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, 4Department of Psychology, University of Illinois at Urbana-Champaign, 5Department of Epidemiology, Mailman School of Public Health, Columbia University, 6Department of Epidemiology, University of Michigan School of Public Health, 7Center for Molecular Medicine and Genetics, Wayne State University School of Medicine


JoVE 52227

 JoVE Biology

Preparation of Formalin-fixed Paraffin-embedded Tissue Cores for both RNA and DNA Extraction

1Department of Pathology & Molecular Medicine, Queen's University, 2Division of Cancer Biology & Genetics, Queen's Cancer Research Institute, Queen's University, 3Department of Surgery, Division of Urology, McGill University, 4Transformative Pathology Program, Ontario Institute for Cancer Research (OICR)


JoVE 54299

 JoVE Medicine

An Affordable HIV-1 Drug Resistance Monitoring Method for Resource Limited Settings

1Africa Centre for Health and Population Studies, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa, 2Unit D11, Jembi Health Systems, 3Academic Medical Center, Department of Global Health, Amsterdam Institute for Global Health and Development (AIGHD), University of Amsterdam, 4Division of Infectious Diseases and Geographic Medicine, Centre for AIDS Research, Stanford Medical School


JoVE 51242

 JoVE 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

 JoVE Bioengineering

From Voxels to Knowledge: A Practical Guide to the Segmentation of Complex Electron Microscopy 3D-Data

1Life Sciences Division, Lawrence Berkeley National Laboratory, 2Joint Bioenergy Institute, Physical Biosciences Division, Lawrence Berkeley National Laboratory, 3National Energy Research Scientific Computing Center, Lawrence Berkeley National Laboratory


JoVE 51673

 JoVE Behavior

Assessing the Multiple Dimensions of Engagement to Characterize Learning: A Neurophysiological Perspective

1Department of Didactics, Université du Québec à Montréal, 2Department of IT and Tech3Lab, HEC Montreal, 3Department of Marketing and Tech3Lab, HEC Montreal, 4Department of Specialized Education, Université du Québec à Montréal


JoVE 52627

 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

 JoVE Chemistry

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector

1Chemical Sensing & Fuel Technology, Chemistry Division, U.S. Naval Research Laboratory, 2NOVA Research, Inc., 3Bio/Analytical Chemistry, Chemistry Division, U.S. Naval Research Laboratory, 4Navy Technology Center for Safety and Survivability, Chemistry Division, U.S. Naval Research Laboratory


JoVE 51938

 JoVE Immunology and Infection

Human Placental and Decidual Organ Cultures to Study Infections at the Maternal-fetal Interface

1Benioff Children’s Hospital, 2Department of Pathology, University of California, San Francisco, 3Center for Reproductive Sciences and Department of Obstetrics, University of California, San Francisco, 4Program in Microbial Pathogenesis and Host Defense, University of California, San Francisco, 5Biomedical Sciences Program, University of California, San Francisco


JoVE 54237

 Science Education: Essentials of General Chemistry

Freezing-Point Depression to Determine an Unknown Compound

JoVE Science Education

Source: Laboratory of Lynne O' Connell — Boston College

When a solid compound is dissolved in a solvent, the freezing point of the resulting solution is lower than that of the pure solvent. This phenomenon is known as freezing-point depression, and the change in temperature is directly related to the molecular weight of the solute. This experiment is designed to find the identity of an unknown compound by using the phenomenon of freezing-point depression to determine its molecular weight. The compound will be dissolved in cyclohexane, and the freezing point of this solution, as well as that of pure cyclohexane, will be measured. The difference between these two temperatures allows for the calculation of the molecular weight of the unknown substance.

 JoVE Behavior

A Novel Experimental and Analytical Approach to the Multimodal Neural Decoding of Intent During Social Interaction in Freely-behaving Human Infants

1Laboratory for Noninvasive Brain-Machine Interface Systems, Department of Electrical and Computer Engineering, University of Houston, 2Department of Biomedical Engineering, University of Houston, 3Department of Biology and Biochemistry, University of Houston


JoVE 53406

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