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Vapor Pressure: The contribution to barometric Pressure of gaseous substance in equilibrium with its solid or liquid phase.

Vapor-liquid Equilibrium

JoVE 10425

Source: Michael G. Benton and Kerry M. Dooley, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA


Vapor-liquid equilibrium is paramount in engineering applications such as distillation, environmental modeling, and general process design. Understanding the interactions of components in a mixture is very…

 Chemical Engineering

Fractional Distillation

JoVE 5700

Source: Laboratory of Dr. Nicholas Leadbeater — University of Connecticut 


Distillation is perhaps the most common laboratory technique employed by chemists for the purification of organic liquids. Compounds in a mixture with different boiling points separate into individual components when the mixture is carefully distilled.…

 Organic Chemistry

Schlenk Lines Transfer of Solvents

JoVE 5679

Source: Hsin-Chun Chiu and Tyler J. Morin, laboratory of Dr. Ian Tonks—University of Minnesota Twin Cities


Schlenk lines and high vacuum lines are both used to exclude moisture and oxygen from reactions by running reactions under a slight overpressure of inert gas (usually N2 or Ar) or under vacuum. Vacuum transfer has been developed …

 Organic Chemistry

Determining Rate Laws and the Order of Reaction

JoVE 10193

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


All chemical reactions have a specific rate defining the progress of reactants going to products. This rate can be influenced by temperature, concentration, and the physical properties of the reactants. The rate also includes the intermediates…

 General Chemistry

Porosimetry of a Silica Alumina Powder

JoVE 10383

Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA


Surface area and pore size distribution are attributes used by adsorbent and catalyst manufacturers and users to ensure quality control and to determine when products are at the end of their useful lives. The…

 Chemical Engineering

Chemical Storage: Categories, Hazards And Compatibilities

JoVE 10380

Source: Robert M. Rioux & Taslima A. Zaman, Pennsylvania State University, University Park, PA


While the use of various chemicals in experimental research is essential, it is also important to safely store and maintain them as a part of the Environmental, Health and Safety (EHS) program. The properties of chemicals and …

 Lab Safety

Freezing-Point Depression to Determine an Unknown Compound

JoVE 10137

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…

 General Chemistry

Solutions and Concentrations

JoVE 10078

Source: Laboratory of Dr. Michael Evans — Georgia Institute of Technology


A solution is a homogeneous mixture containing some components in small amounts, called solutes, and one component in a large amount, called the solvent. Solid-liquid solutions contain one or more solid solutes dissolved in a liquid solvent. Solutions are…

 General Chemistry

Performing 1D Thin Layer Chromatography

JoVE 5499

Source: Laboratory of Dr. Yuri Bolshan — University of Ontario Institute of Technology


Thin layer chromatography (TLC) is a chromatographic method used to separate mixtures of non-volatile compounds. A TLC plate consists of a thin layer of adsorbent material (the stationary phase) fixed to an appropriate solid support such as…

 Organic Chemistry

Technical Aspect of the Automated Synthesis and Real-Time Kinetic Evaluation of [11C]SNAP-7941

1Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, 2Department for Pharmaceutical Technology and Biopharmaceutics, Faculty of Life Sciences, University of Vienna, 3Ludwig Boltzmann Institute Applied Diagnostics, 4CBmed GmbH - Center for Biomarker Research in Medicine

JoVE 59557

 Chemistry

The Neuromuscular Junction: Measuring Synapse Size, Fragmentation and Changes in Synaptic Protein Density Using Confocal Fluorescence Microscopy

1Physiology and Bosch Institute, University of Sydney, 2Motor Neuron Disease Research Group, Australian School of Advanced Medicine, Macquarie University, 3Advanced Microscopy Facility, Bosch Institute, University of Sydney

JoVE 52220

 Neuroscience

Real-time In Vitro Monitoring of Odorant Receptor Activation by an Odorant in the Vapor Phase

1Department of Molecular Genetics and Microbiology, Duke University Medical Center, 2Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 3Department of Neurobiology, Duke University Medical Center, 4Department of Mechanical Systems, Engineering, Tokyo University of Agriculture and Technology, 5Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, 6Duke Institute for Brain Sciences, Duke University

JoVE 59446

 Neuroscience

Meso-Scale Particle Image Velocimetry Studies of Neurovascular Flows In Vitro

1Department of Mechanical Engineering, University of California, Riverside, 2Division of Interventional Neuroradiology, University of California, Los Angeles, 3Materials Science and Engineering Program, University of California, Riverside, 4Department of Bioengineering, University of California, Riverside

JoVE 58902

 Bioengineering

A Novel Method for the Pentosan Analysis Present in Jute Biomass and Its Conversion into Sugar Monomers Using Acidic Ionic Liquid

1Department of Chemical Engineering, National Taiwan University, 2International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 3Australian Institute for Innovative Materials (AIIM), University of Wollongong, 4Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, 5School of Chemical Engineering & Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, 6Department of Plant and Environmental New Resources, Kyung Hee University

JoVE 57613

 Environment

Utilization of Capsules for Negative Staining of Viral Samples within Biocontainment

1Pathology Division, United States Army Medical Research Institute of Infectious Diseases (USAMRIID), 2Diagnostic Systems Division, United States Army Medical Research Institute of Infectious Diseases (USAMRIID), 3Microscopy Innovations LLC

JoVE 56122

 Immunology and Infection

Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise

1Division of Pulmonary Medicine, University of Alberta, 2Faculty of Physical Education and Recreation, University of Alberta, 3Divisions of Critical Care and Cardiology, University of Alberta, 4Faculty of Rehabilitation Medicine, University of Alberta, 5G.F. MacDonald Centre for Lung Health

JoVE 54949

 Medicine

A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device

1Wellness Promotion Science Center, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 2Advanced Research Center for Human Sciences, Waseda University, 3Department of Clinical Laboratory Science, Graduate School of Medical Science, Kanazawa University, 4Asanogawa General Hospital

JoVE 54837

 Medicine
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