Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Oral Cavity01:11

Oral Cavity

3.0K
The oral cavity, or the mouth, is a complex structure in humans that plays a vital role in our day-to-day lives. Its role is not only in chewing and swallowing food; it also plays a role in speech and facial expressions.
Teeth: The teeth are the hardest structures in our bodies. Humans have two sets of teeth throughout their lifetime: deciduous (baby) teeth and permanent teeth. Each tooth consists of several parts: the crown (visible part), the root (embedded in the jaw), enamel (hard outer...
3.0K
Nose and Nasal Cavity01:24

Nose and Nasal Cavity

11.3K
The nose is composed of an observable exterior segment (external nose) and an internal segment within the skull known as the nasal cavity (internal nose). The external nose, visible on the face, consists of a framework of bone and hyaline cartilage enveloped in skin and muscle and lined with a mucous membrane. This structure is supported by the frontal bone, nasal bones, and maxillary bone and is supplemented by a cartilaginous framework comprising the septal nasal cartilage, lateral nasal...
11.3K
Gas Exchange and Transport01:20

Gas Exchange and Transport

76.6K
Gas exchange, the intake of molecular oxygen (O2) from the environment and the outflow of carbon dioxide (CO2) into the environment, is necessary for cellular function. Gas exchange during respiration occurs largely via the movement of gas molecules along pressure gradients. Gas travels from areas of higher partial pressure to areas of lower partial pressure. In mammals, gas exchange occurs in the alveoli of the lungs, which are adjacent to capillaries and share a membrane with them.
76.6K
Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules02:34

Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules

37.3K
The test of the kinetic molecular theory (KMT) and its postulates is its ability to explain and describe the behavior of a gas. The various gas laws (Boyle’s, Charles’s, Gay-Lussac’s, Avogadro’s, and Dalton’s laws) can be derived from the assumptions of the KMT, which have led chemists to believe that the assumptions of the theory accurately represent the properties of gas molecules.
37.3K
Gas Laws: Boyle's, Gay-Lussac, Charles', Avogadro's, and Ideal Gas Law03:19

Gas Laws: Boyle's, Gay-Lussac, Charles', Avogadro's, and Ideal Gas Law

76.7K
Through experiments, scientists established the mathematical relationships between pairs of variables, such as pressure and temperature, pressure and volume, volume and temperature, and volume and moles, that hold for an ideal gas.
76.7K
Group Design02:01

Group Design

10.3K
The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between...
10.3K

You might also read

Related Articles

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

Sort by
Same author

Uncovering Electron-Transfer Mechanisms of Sulfur Anion Photosensitizers with Intramolecular Charge Transfer.

Journal of the American Chemical Society·2026
Same author

FRE-GAN : Full-resolution efficient convolutional generative adversarial network for retinal vessel segmentation.

Neural networks : the official journal of the International Neural Network Society·2026
Same author

Global Research Trends in Gastric Cancer Epigenetics From 2005 to 2025.

Cureus·2026
Same author

Study on an Extended Surfactant Heavy Oil Viscosity Reduction Emulsification System.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Alternating Current-Promoted Copper Catalysis for the Construction of Alkynyl Thioethers.

The Journal of organic chemistry·2026
Same author

Prognostic value of lncRNA HCG4 in thyroid cancer and its regulatory effect on tumor progression.

Endokrynologia Polska·2026

Related Experiment Video

Updated: Jan 25, 2026

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
08:02

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Published on: February 11, 2020

9.4K

Multicomponent gas detection based on concise CW-cavity ring-down spectroscopy with a bow-tie design.

Jinduo Wang, Jin Yu, Zeqiang Mo

    Applied Optics
    |May 3, 2019
    PubMed
    Summary

    This study demonstrates a compact open-path continuous-wave cavity ring-down spectroscopy (CW-CRDS) system for detecting multiple greenhouse gases. The novel bow-tie cavity design achieves high sensitivity and accuracy in ambient air monitoring.

    More Related Videos

    Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer
    05:00

    Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer

    Published on: July 26, 2024

    952
    Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5
    09:46

    Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5

    Published on: August 25, 2016

    12.1K

    Related Experiment Videos

    Last Updated: Jan 25, 2026

    Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
    08:02

    Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

    Published on: February 11, 2020

    9.4K
    Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer
    05:00

    Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer

    Published on: July 26, 2024

    952
    Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5
    09:46

    Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5

    Published on: August 25, 2016

    12.1K

    Area of Science:

    • Spectroscopy
    • Environmental Science
    • Laser Physics

    Background:

    • Cavity Ring-Down Spectroscopy (CRDS) is a powerful technique for trace gas detection.
    • Existing CRDS systems can be bulky and complex, limiting their application in field monitoring.
    • Accurate measurement of greenhouse gases is crucial for climate change research.

    Purpose of the Study:

    • To develop a compact and highly sensitive open-path CW-CRDS system for multicomponent gas detection.
    • To evaluate the performance of a novel bow-tie cavity structure for enhanced optical feedback and dual-path capabilities.
    • To assess the system's accuracy in measuring greenhouse gas concentrations in ambient air.

    Main Methods:

    • Utilized a bow-tie cavity structure in single- and dual-optical-path configurations for CW-CRDS.
    • Employed Allan deviation analysis to determine system sensitivity and noise equivalent absorption coefficient.
    • Implemented a wavelength-correction method to improve measurement accuracy.
    • Measured concentrations of methane (CH4), water vapor (H2O), and carbon dioxide (CO2) in ambient air.

    Main Results:

    • Achieved a minimum Allan deviation of 1.6×10-10 cm-1 at 100 s integration time.
    • Determined a methane detection sensitivity of 0.9 ppbv.
    • Reduced measurement uncertainty by approximately 30% using the wavelength-correction method.
    • Measured ambient air concentrations with uncertainties of 0.02 ppmv for CH4, 100 ppmv for H2O, and 10 ppmv for CO2.

    Conclusions:

    • The demonstrated open-path CW-CRDS system with a bow-tie cavity is effective for compact and sensitive multicomponent gas detection.
    • The system offers high performance for real-time monitoring of greenhouse gases in ambient air.
    • The proposed wavelength-correction method significantly enhances measurement reliability.