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

Global consensus on the evidence-based functional classification of simultaneous vision IOLs.

Journal of cataract and refractive surgery·2026

Same author

Advances in IOL calculations in patients with keratoconus.

Therapeutic advances in ophthalmology·2025

Same author

Accuracy of intra ocular lens calculation formulae in patients with pseudoexfoliation syndrome.

International ophthalmology·2024

Same author

BCLA CLEAR Presbyopia: Management with corneal techniques.

Contact lens & anterior eye : the journal of the British Contact Lens Association·2024

Same author

Accuracy of Toric Intraocular Lens Calculations Using Estimated Versus Measured Posterior Corneal Astigmatism.

American journal of ophthalmology·2023

Same author

Patient satisfaction and attitudes towards immediate sequential bilateral cataract surgery.

European journal of ophthalmology·2023

Same journal

Diverse Conjunctival Adverse Events Associated with Tisotumab Vedotin.

Ophthalmology·2026

Same journal

The Answer Is Blowing in the Wind: Uncovering Hidden Glaucoma Risk Factors.

Ophthalmology·2026

Same journal

Nonsteroidal Anti-inflammatory Drug Use Reduces the Risk of Age-Related Macular Degeneration in Electronic Health Record Analysis: Signal or Solution?

Ophthalmology·2026

Same journal

Metastasis of Nasopharyngeal Squamous Cell Carcinoma to the Angle.

Ophthalmology·2026

Same journal

Endocrine Mucin-Producing Sweat Gland Carcinoma of Eyelid.

Ophthalmology·2026

Same journal

Multimodal Imaging of Optic Nerve Invasion in Unilateral Retinoblastoma.

Ophthalmology·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Dec 13, 2025

Proboscis Extension Response PER Assay in Drosophila

Proboscis Extension Response PER Assay in Drosophila

Published on: April 29, 2007

Reply

Andrew M J Turnbull¹, Graham D Barrett²

¹Sir Charles Gairdner Hospital, Perth, WA, Australia; Lions Eye Institute, Perth, WA, Australia; Royal Bournemouth Hospital, Bournemouth, United Kingdom; Optegra Eye Hospital, Hampshire, United Kingdom.

|August 3, 2020

Summary

No abstract available in PubMed .

More Related Videos

In Vitro Scratch Assay to Demonstrate Effects of Arsenic on Skin Cell Migration

In Vitro Scratch Assay to Demonstrate Effects of Arsenic on Skin Cell Migration

Published on: February 23, 2019

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

Related Experiment Videos

Last Updated: Dec 13, 2025

Proboscis Extension Response PER Assay in Drosophila

Proboscis Extension Response PER Assay in Drosophila

Published on: April 29, 2007

In Vitro Scratch Assay to Demonstrate Effects of Arsenic on Skin Cell Migration

In Vitro Scratch Assay to Demonstrate Effects of Arsenic on Skin Cell Migration

Published on: February 23, 2019

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