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Regression Analysis: Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see Linear models) the relationship is constrained to be a straight line and Least-squares analysis is used to determine the best fit. In logistic regression (see Logistic models) the dependent variable is qualitative rather than continuously variable and Likelihood functions are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.

Calibration Curves

JoVE 10188

Source: Laboratory of Dr. B. Jill Venton - University of Virginia


Calibration curves are used to understand the instrumental response to an analyte and predict the concentration in an unknown sample. Generally, a set of standard samples are made at various concentrations with a range than includes the unknown of interest and the…

 Analytical Chemistry

Ideal Gas Law

JoVE 5537

Source: Laboratory of Dr. Andreas Züttel - Swiss Federal Laboratories for Materials Science and Technology


The ideal gas law describes the behavior of most common gases at near-ambient conditions and the tendency of all chemical matter in the dilute limit. It is a fundamental relationship between three measurable macroscopic system…

 General Chemistry

Using Confocal Analysis of Xenopus laevis to Investigate Modulators of Wnt and Shh Morphogen Gradients

1Department of Biomedical Science, The Bateson Centre, University of Sheffield, 2Institute of Genetic Medicine, Newcastle University, 3Department of Cardiovascular Science, The Bateson Centre, University of Sheffield, 4School of Biochemistry, University of Bristol, 5Biology Department, University of York

JoVE 53162

 Developmental Biology

Detecting Estrogenic Ligands in Personal Care Products using a Yeast Estrogen Screen Optimized for the Undergraduate Teaching Laboratory

1Department of Biology, University of the South, 2School of Biological Sciences, Louisiana Tech University, 3School of Medicine, Louisiana State University Health Sciences Center, 4Department of Biology, Furman University, 5Department of Computer Science, Louisiana Tech University, 6Clemson University

JoVE 55754

 Biology

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

1Molecular Genetics of Chronic Inflammation and Allergic Disease, Max-Delbrück Center for Molecular Medicine, 2Murdoch Childrens Research Institute, 3Department of Paediatrics, University of Melbourne, 4Centre for Social and Early Emotional Development, Faculty of Health, Deakin University, 5Department of Paediatrics, University of Western Australia

JoVE 57601

 Genetics

Normothermic Ex Situ Heart Perfusion in Working Mode: Assessment of Cardiac Function and Metabolism

1Department of Surgery, Faculty of Medicine, University of Alberta, 2Department of Pediatrics, Faculty of Medicine, University of Alberta, 3Department of Biomedical Engineering, Faculty of Medicine, University of Alberta, 4Department of Mechanical Engineering, Faculty of Engineering, University of Alberta, 5Department of Chemical and Materials Engineering, Faculty of Engineering, University of Alberta, 6Canadian National Transplant Research Program, 7Department of Physiology, Faculty of Medicine, University of Alberta

JoVE 58430

 Medicine

Conscious and Non-conscious Representations of Emotional Faces in Asperger's Syndrome

1Institute of Statistical Science, Academia Sinica, 2Max Planck Institute for Human Cognitive and Brain Sciences, 3Department of Psychology, Fo Guang University, 4Department of Electrical Engineering, Fu Jen Catholic University, 5State Research Institute of Physiology and Basic Medicine, 6Novosibirsk State University, 7Imaging Research Center, Taipei Medical University

JoVE 53962

 Behavior

Identifying DNA Mutations in Purified Hematopoietic Stem/Progenitor Cells

1Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, 2Department of Cellular and Structural Biology, UT Health Science Center at San Antonio, 3Department of Pathology, UT Health Science Center at San Antonio, 4Department of Microbiology, UT Health Science Center at San Antonio, 5Cancer Therapy and Research Center, UT Health Science Center at San Antonio

JoVE 50752

 Immunology and Infection

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion

1Center for Human Movement Sciences, University Medical Center Groningen, 2Amsterdam Rehabilitation Research Center Reade, Amsterdam, 3Research Institute MOVE, Faculty of Behavioral and Human Movement Sciences, VU University, 43M, Delft University of Technology, Delft, 5Center for Rehabilitation, University Medical Center Groningen

JoVE 60492

 Medicine

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients

1Department of Biology, Long Island University-Post, 2Department of Animal Biology, School of Integrative Biology, University of Illinois, 3Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 4Department of Zoology and Laboratory of Ornithology, Palacký University, 5Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic

JoVE 57512

 Behavior

Performing Permanent Distal Middle Cerebral with Common Carotid Artery Occlusion in Aged Rats to Study Cortical Ischemia with Sustained Disability

1Wolfson Centre for Age-Related Diseases, King's College London, University of London, 2Department of Neuroimaging, James Black Centre, Institute of Psychiatry, King's College London, University of London, 3Institute of Neuroscience and Psychology, Wellcome Surgical Institute, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, 4Research Service, Edward Hines Jr. VA Hospital, 5Neurology Service, Edward Hines Jr. VA Hospital, 6Department of Molecular Pharmacology and Therapeutics, Neuroscience Research Institute, Loyola University Chicago, 7Department of Oncology, The Gray Institute for Radiation, Oncology and Biology, University of Oxford

JoVE 53106

 Medicine

Detection and Genogrouping of Noroviruses from Children's Stools By Taqman One-step RT-PCR

1Laboratorio de Investigación y Desarrollo (LID), Universidad Peruana Cayetano Heredia, 2Bloomberg School of Public Health, Johns Hopkins University, 3Laboratorio de Diagnostico Molecular, Facultad de Medicina, University of Concepcion,Chile, 4University of California San Diego School of Medicine

JoVE 3232

 Medicine

Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors

1Southwest Biological Science Center, U.S. Geological Survey, 2Centre for Energy Technology Brandenburg, 3Institute of Environmental Sciences, Brandenburg University of Technology Cottbus-Senftenberg, 4Umweltanalytische Produkte GmbH, 5Institute of Plant Sciences, University of Graz, 6Multiphase Chemistry Department, Max Planck Institute for Chemistry

JoVE 60308

 Environment

Agarose-based Tissue Mimicking Optical Phantoms for Diffuse Reflectance Spectroscopy

1Graduate School of Bio-application & Systems Engineering, Tokyo University of Agriculture & Technology, 2Department of Mechanical Engineering, Kushiro National College of Technology, 3Division of Bioinformation and Therapeutic Systems, National Defense Medical College Research Institute, 4Graduate School of Science and Engineering, Yamagata University, 5College of Design and Manufacturing Technology, Muroran Institute of Technology, 6Department of Livestock Services, Ministry of Fisheries and Livestock, Government of Bangladesh

JoVE 57578

 Bioengineering

Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests

1Department of Civil, Construction, and Environmental Engineering, North Carolina State University, 2Department of Plant and Microbial Biology, North Carolina State University

JoVE 55545

 Bioengineering

Establishing a Competing Risk Regression Nomogram Model for Survival Data

1Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, 2Institute of Gastroenterology, Zhejiang University, 3Department of Colorectal Surgery, Jinhua Hospital, Zhejiang University School of Medicine, 4Department of Medical Oncology, Jinhua Hospital, Zhejiang University School of Medicine, 5Department of Hepatobiliary Pancreatic Surgery, Jinhua Hospital, Zhejiang University School of Medicine, 6Division of Oncology, Johns Hopkins University School of Medicine

Video Coming Soon

JoVE 60684

 JoVE In-Press

Measuring Erythrocyte Complement Receptor 1 Using Flow Cytometry

1Oncogeriatric Coordination Unit, Reims University Hospitals, Maison Blanche Hospital, 2Faculty of Medicine, University of Reims Champagne-Ardenne, 3URCACyt, Flow cytometry technical platform, University of Reims Champagne-Ardenne, 4Department of Immunology, Reims University Hospitals, Robert Debre Hospital, 5Department of Internal Medicine and Geriatrics, Reims University Hospitals, Maison Blanche Hospital, 6Faculty of Medicine, University of Reims Champagne-Ardenne

Video Coming Soon

JoVE 60810

 JoVE In-Press

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers

1Department of Physical Education, São Paulo State University (UNESP) at Bauru, 2Institute of Bioscience, Graduate Program in Human Development and Technology, São Paulo State University (UNESP) at Rio Claro, 3Ciper, Faculdade de Motricidade Humana, Universidade de Lisboa, 4Department of Science and Technology, School of Education, Polytechnic Institute of Setúbal, 5Quality of Life Research Center, Polytechnic Institute of Santarem, 6Universidade Europeia at Lisbon, 7Division of Endocrinology, Diabetes and Bone Disease, Icahn School of Medicine at Mount Sinai, 8Department of Biobehavioral Sciences, Teachers College, Columbia University

JoVE 60630

 Biochemistry

Laser-Induced Fluorescence Emission (L.I.F.E.) as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

1Institute of Ecology, University of Innsbruck, 2Austrian Polar Research Institute, University of Vienna, 3BrainLinks-BrainTools, Bernstein Center Freiburg, 4Atom Science, Kasevich Lab, Stanford University, 5Institute of Experimental Physics, University of Innsbruck, 6Department of Physics, Extraterrestrial Vehicle Instruments Laboratory, Harvey Mudd College

JoVE 60447

 Environment

Assessing Pupil-linked Changes in Locus Coeruleus-mediated Arousal Elicited by Trigeminal Stimulation

1Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, 2The BioRobotics Institute, Scuola Superiore Sant'Anna, 3Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, 4Institut des Maladie Neurodegeneratives, University of Bordeaux, 5Department of Physics, University of Pisa, 6Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, University of Pisa, 7Department of Developmental Neuroscience, IRCCS Foundation Stella Maris

JoVE 59970

 Neuroscience
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