Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Reaction Quotient

Reaction Quotient

The status of a reversible reaction is conveniently assessed by evaluating its reaction quotient (Q). For a reversible reaction described by m A + n B ⇌ x C + y D, the reaction quotient is derived directly from the stoichiometry of the balanced equation as

Reaction Rate

Reaction Rate

The rate of reaction is the change in the amount of a reactant or product per unit time. Reaction rates are therefore determined by measuring the time dependence of some property that can be related to reactant or product amounts. Rates of reactions that consume or produce gaseous substances, for example, are conveniently determined by measuring changes in volume or pressure.
The mathematical representation of the change in the concentration of reactants and products, over time, is the rate...

Reaction Mechanisms

Reaction Mechanisms

Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
For instance, the decomposition of ozone appears to follow a mechanism with two steps:

Support Reactions

Support Reactions

A coplanar force system refers to a set of forces that all lie in the same plane and are subject to different reactions between the point of contact and the supports. Understanding how different types of supports affect coplanar forces is crucial for designing safe and reliable structures that can withstand external loads.
The purpose of the supports is to prevent the translational motion of the system by applying an equal and opposite force and to prevent the system's rotation by applying...

Responses to Salt Stress

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.

Reaction Yield

Reaction Yield

The theoretical yield of a reaction is the amount of product estimated to form based on the stoichiometry of the balanced chemical equation. The theoretical yield assumes the complete conversion of the limiting reactant into the desired product. The amount of product that is obtained by performing the reaction is called the actual yield, and it may be less than or (very rarely) equal to the theoretical yield.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Outcomes of Passable and Non-passable Strictures in Clinical Trials of Crohn's Disease: A Post-hoc Analysis.

Journal of Crohn's & colitis·2021

Same author

Intestinal Host Response to SARS-CoV-2 Infection and COVID-19 Outcomes in Patients With Gastrointestinal Symptoms.

Gastroenterology·2021

Same author

Five-Year Efficacy and Safety of Ustekinumab Treatment in Crohn's Disease: The IM-UNITI Trial.

Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association·2021

Same author

Bariatric Surgery and Risk of New-onset Inflammatory Bowel Disease: A Nationwide Cohort Study.

Journal of Crohn's & colitis·2021

Same author

Prevalence and Progression of Incidental Terminal Ileitis on Non-diagnostic Colonoscopy: A Systematic Review and Meta-analysis.

Journal of Crohn's & colitis·2021

Same author

Colectomy Incidence Rates in Five-Year Data From the Observational Postmarketing Ulcerative Colitis Study of Originator Infliximab.

Inflammatory bowel diseases·2021

Same journal

How important is fiber in the Crohn's disease story?

Gastroenterology·2026

Same journal

Reply to "Critical Appraisal of the Integrin αV-YAP-CTGF Axis in Congestive Hepatopathy".

Gastroenterology·2026

Same journal

Critical Appraisal of the Integrin αV-YAP-CTGF Axis in Congestive Hepatopathy.

Gastroenterology·2026

Same journal

A High-Risk Impaction: To Scope or to Stent First?

Gastroenterology·2026

Same journal

Epithelial FOXP3 orchestrates O-glycosylated IL-6 secretion to drive pancreatic fibrocarcinogenesis.

Gastroenterology·2026

Same journal

Reply to "Methodological Considerations on Neonatal Metabolomics and Future Inflammatory Bowel Disease".

Gastroenterology·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jul 10, 2025

Proboscis Extension Response PER Assay in Drosophila

Proboscis Extension Response PER Assay in Drosophila

Published on: April 29, 2007

Reply

Manasi Agrawal¹, Jean-Frederic Colombel², Kristine H Allin³

¹Center for Molecular Prediction of Inflammatory Bowel Disease (PREDICT), Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark; The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York.

Gastroenterology

|November 26, 2023

Summary

No abstract available in PubMed .

More Related Videos

A Proboscis Extension Response Protocol for Investigating Behavioral Plasticity in Insects: Application to Basic, Biomedical, and Agricultural Research

A Proboscis Extension Response Protocol for Investigating Behavioral Plasticity in Insects: Application to Basic, Biomedical, and Agricultural Research

Published on: September 8, 2014

Recording Behavioral Responses to Reflection in Crayfish

Recording Behavioral Responses to Reflection in Crayfish

Published on: May 14, 2010

Related Experiment Videos

Last Updated: Jul 10, 2025

Proboscis Extension Response PER Assay in Drosophila

Proboscis Extension Response PER Assay in Drosophila

Published on: April 29, 2007

A Proboscis Extension Response Protocol for Investigating Behavioral Plasticity in Insects: Application to Basic, Biomedical, and Agricultural Research

A Proboscis Extension Response Protocol for Investigating Behavioral Plasticity in Insects: Application to Basic, Biomedical, and Agricultural Research

Published on: September 8, 2014

Recording Behavioral Responses to Reflection in Crayfish

Recording Behavioral Responses to Reflection in Crayfish

Published on: May 14, 2010