Laboratory Oxygen Control
Laboratory Oxygen Control - Related Videos
11:49
Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level
0 Views •
Cited by 10 •
2013
Microfluidic oxygen control confers more than just convenience and speed over hypoxic chambers for biological experiments. Especially when implemented via diffusion through a membrane, microfluidic oxygen can provide simultaneous liquid and gas phase modulations at the microscale-level. This technique enables dynamic multi-parametric experiments critical for studying islet pathophysiology.
08:58
Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
0 Views •
Cited by 28 •
2011
We present an experimental procedure for measuring the partial pressure of oxygen (pO2) in cerebral vasculature based on oxygen-dependent quenching of phosphorescence. Animal preparation and imaging procedures were outlined for both large field of view CCD-based imaging of pO2 in rats and 2-photon excitation based imaging of pO2 in mice.
04:15
Online Virtual Reality Networked Control Laboratory Applied in Control Engineering Education
0 Views •
Cited by 3 •
2024
This study describes a WebVR-based online virtual reality (VR) laboratory system that provides users with immersive and interactive experimentation capabilities supported by VR devices. The proposed system not only helps to enhance the realism of user participation in online experiments but is also applicable to a wide range of online laboratory frameworks.
06:54
Methods for Presenting Real-world Objects Under Controlled Laboratory Conditions
0 Views •
Cited by 11 •
2019
We describe methods for presenting real-world objects and matched images of the same objects under tightly-controlled experimental conditions. The methods are described in the context of a decision-making task, but the same real-world approach can be extended to other cognitive domains such as perception, attention, and memory.
06:44
Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
0 Views •
Cited by 1 •
2023
Oxide materials show many exotic properties that can be controlled by tuning the oxygen content. Here, we demonstrate the tuning of oxygen content in oxides by varying the pulsed laser deposition parameters and by performing postannealing. As an example, electronic properties of SrTiO3-based heterostructures are tuned by growth modifications and annealing.
FAQs
A feedback system compares oxygen measurements from a sensor with a defined set point, then adjusts controlled gas delivery to reduce the difference. Mixing distributes the supplied gas through the experimental environment, while repeated measurement allows the system to regulate oxygen toward the intended condition. This coordinated process supports stable exposure rather than relying on a single initial adjustment.
Each component performs a different function. Oxygen sensors provide measurements, gas delivery changes the available oxygen, and mixing helps distribute that change through the experimental environment. If these elements do not work together, oxygen conditions may differ from the intended set point or vary within the system. Their coordination is therefore central to maintaining reproducible experimental conditions.
Atmospheric and reduced-oxygen settings allow investigators to reproduce different oxygen availabilities rather than treating air exposure as the only condition. This comparison can reveal how respiration, decomposition, redox reactions, or organismal responses change as oxygen availability shifts. Selecting a defined set point makes those responses easier to relate to the environmental condition imposed during the experiment.
A typical workflow begins by selecting the required oxygen set point, placing an oxygen sensor in the experimental environment, and connecting controlled gas delivery with mixing. The system then measures oxygen, compares the result with the target, and adjusts gas input as needed. Continued monitoring and feedback help maintain the chosen condition throughout the study rather than only at its beginning.
The approach is useful when researchers need to reproduce oxygen conditions found in soils, sediments, aquatic habitats, or enclosed ecosystems. It can support experiments examining respiration, decomposition, redox reactions, and organismal responses under controlled oxygen availability. By isolating oxygen as an experimental condition, investigators can investigate how environmental oxygen levels relate to biological and chemical processes.
Controlled oxygen experiments can show how changes in oxygen availability influence processes linked to ecosystem function. Measurements and observations made under defined conditions can be compared across atmospheric or reduced-oxygen treatments, helping researchers interpret responses to environmental change. Maintaining consistent oxygen conditions also improves reproducibility, so similar experiments can more reliably evaluate biological, chemical, or physical effects.