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 Experiment Videos

A digital system for generating dynamic sinusoidal gas concentration signals.

S A Barton1, L Sutton, C E Hahn

  • 1Nuffield Department of Anaesthetics, University of Oxford, United Kingdom.

Journal of Applied Physiology (Bethesda, Md. : 1985)
|August 1, 1988
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

How do staff work in NHS hospital operations management meetings to support resilience in everyday service delivery? A qualitative study.

BMC health services research·2025
Same author

Impact of different hand-drying methods on surrounding environment: aerosolization of virus and bacteria, and transfer to surfaces.

The Journal of hospital infection·2024
Same author

Pre-hospital prediction of adverse outcomes in patients with suspected COVID-19: Development, application and comparison of machine learning and deep learning methods.

Computers in biology and medicine·2022
Same author

Potassium titanyl phosphate laser surface tympanoplasty as a novel treatment for chronic granular myringitis in a series of 14 patients.

The Journal of laryngology and otology·2021
Same author

The patient experience of pain in hidradenitis suppurativa.

The British journal of dermatology·2020
Same author

Dental RECUR Randomized Trial to Prevent Caries Recurrence in Children.

Journal of dental research·2020
Same journal

Thoroughbred horses susceptible to Recurrent Exertional Rhabdomyolysis have elevated skeletal muscle mitochondrial capacities.

Journal of applied physiology (Bethesda, Md. : 1985)·2026
Same journal

Change in Neutrophil-to-Lymphocyte Ratio after acute and chronic exercise: A Systematic Review and Meta-Analysis.

Journal of applied physiology (Bethesda, Md. : 1985)·2026
Same journal

Ankylosing spondylitis and muscle sympathetic nerve activity: a case study.

Journal of applied physiology (Bethesda, Md. : 1985)·2026
Same journal

Intracranial vasomotor and blood flow responses to light intensity aerobic exercise in young adults: a 4D flow MRI study.

Journal of applied physiology (Bethesda, Md. : 1985)·2026
Same journal

Comparative assessments of the COSMED adaptive mixing chamber vs. breath-by-breath methods for oxygen uptake measurements in recreationally active adults.

Journal of applied physiology (Bethesda, Md. : 1985)·2026
Same journal

Can we assess exercise metabolism from skin? Metabolomic profiles in skin dialysate collected during exercise.

Journal of applied physiology (Bethesda, Md. : 1985)·2026
See all related articles

A novel computer-controlled gas-mixing system precisely controls respiratory gas concentrations. This system enables dynamic sinusoidal variations in Argon (Ar) and Nitrous Oxide (N2O) levels for advanced respiratory monitoring research.

Area of Science:

  • Engineering
  • Physiology
  • Computer Science

Background:

  • Accurate control of respiratory gas mixtures is crucial for physiological research.
  • Existing methods may lack the precision and dynamic range required for complex respiratory monitoring.
  • The need for a versatile system to generate controlled gas forcing functions is evident.

Purpose of the Study:

  • To present a computer-controlled gas-mixing system for precise respiratory gas delivery.
  • To enable dynamic, user-defined concentration profiles for multiple gases.
  • To facilitate research in respiratory monitoring through controlled gas forcing functions.

Main Methods:

  • A computer-controlled system mixing four gases: Oxygen (O2), Argon (Ar), Nitrous Oxide (N2O), and Nitrogen (N2).

Related Experiment Videos

  • Independent sinusoidal variation of Ar and N2O concentrations with periods from 0.25 to 30 minutes.
  • Utilizes solenoid valves, sonic chokes, a mixing chamber, and pulse frequency modulation.
  • A dedicated microcomputer manages calculations and valve switching for precise control.

    • Main Results:

    • The system successfully mixes four gases with user-defined concentration paths.
    • Constant output O2 fraction is maintained while Ar and N2O levels vary dynamically.
    • The system provides accurate respiratory gas forcing functions for research applications.

    Conclusions:

    • The developed computer-controlled gas-mixing system offers precise and flexible control over respiratory gas mixtures.
    • It is suitable for generating complex gas forcing functions essential for respiratory monitoring research.
    • This technology advances the capabilities for investigating respiratory system responses to controlled gas environments.