Oxygen Volume Percent
Oxygen Volume Percent - Related Videos
07:30
Determining the Mass Percent Composition in an Aqueous Solution
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2023
Source: Laboratory of Dr. Neal Abrams — SUNY College of Environmental Science and Forestry Determining the composition of a solution is an important analytical and forensic technique. When solutions are made with water, they are referred to as being aqueous, or containing water. The primary component of a solution is referred to as the solvent, and the dissolved minor component is called the solute. The solute is dissolved in the solvent to make a solution. Water is the most common solvent in...
09:38
Dissolved Oxygen in Surface Water
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Dissolved oxygen (DO) measurements calculate the amount of gaseous oxygen dissolved in surface water, which is important to all oxygen-breathing life in river ecosystems, including fish species preferred for human consumption (e.g. bluegill and bass), as well as decomposer species critical to the recycling of biogeochemical materials in the system. The oxygen dissolved in lakes, rivers, and oceans is crucial for the...
08:51
Understanding Concentration and Measuring Volumes
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2023
Solutions are utilized to some degree in almost all biological research applications. Therefore understanding how to measure and manipulate them is imperative to any experiment. In this video, concepts in preparing solutions are introduced. Solutions consist of a solute dissolved in solvent to yield a homogeneous mixture of molecular substances. Solutions are generally identified by their components and corresponding concentrations. Concentrated solutions are diluted through various...
08:58
Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
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Cited by 26 •
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.
02:48
Bond Polarity, Dipole Moment, and Percent Ionic Character
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2020
Bond Polarity The absolute value of the difference in electronegativity (ΔEN) of two bonded atoms provides a rough measure of the polarity to be expected in the bond and, thus, the bond type. When the difference is very small or zero, the bond is covalent and nonpolar. When it is large, the bond is polar covalent or ionic. The absolute values of the electronegativity differences between the atoms in the bonds H–H, H–Cl, and Na–Cl are 0 (nonpolar), 0.9 (polar covalent), and 2.1 (ionic),...
FAQs
Oxygen volume percent contributes to oxygen partial pressure together with the total gas pressure and temperature. Changing the oxygen fraction therefore changes the driving conditions for oxygen movement from the gas phase into liquids, tissues, or engineered constructs. Interpreting oxygen availability requires considering these variables together rather than treating volume percent as an isolated condition.
The same oxygen volume percent can correspond to different oxygen partial pressures when total pressure or temperature changes. Because partial pressure helps determine oxygen transfer into biological materials, maintaining or recording these conditions is important when comparing experiments. This relationship supports more consistent control of cellular environments in incubators, bioreactors, and tissue-engineering systems.
Oxygen volume percent helps establish the gas-phase conditions that drive diffusion into liquids, tissues, and engineered constructs. If those conditions change, the oxygen available for movement through the system can also change, affecting cells located within the construct. Controlling the gas composition therefore supports investigations of oxygen transfer and the design of oxygen-delivery strategies.
Changes in oxygen availability can influence cellular respiration, metabolism, growth, and differentiation. In bioengineering experiments, adjusting the surrounding gas conditions provides a way to study how cells respond to oxygen-rich or oxygen-limited environments. These responses are particularly relevant when researchers examine hypoxia or seek to reproduce oxygen conditions associated with engineered biological systems.
A typical experimental approach is to set the gas composition in a cell culture incubator or bioreactor, maintain the intended oxygen volume percent, and interpret it alongside pressure and temperature. The resulting conditions can then be used to regulate the environment experienced by cultured cells or engineered constructs. This workflow supports controlled studies of respiration, metabolism, and oxygen transfer.
Bioengineers use these measurements when they need to establish or compare oxygen conditions in cell cultures, bioreactors, and tissue-engineering systems. The information supports studies of hypoxia, cellular differentiation, and oxygen transfer, while also informing oxygen-delivery strategies for regenerative medicine. It is especially useful when the goal is to connect gas conditions with biological outcomes.