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Pressure swing adsorption (PSA) is a technique used to separate some gas species from a mixture of gases (typically air) under pressure according to the species' molecular characteristics and affinity for an adsorbent material.
Prostate-specific antigen (PSA), also known as gamma-seminoprotein or kallikrein-3 (KLK3), P-30 antigen, is a glycoprotein enzyme encoded in humans by the KLK3 gene.PSA is a member of the kallikrein-related peptidase family and is secreted by the epithelial cells of the prostate gland in men and the paraurethral glands in women.
Vickers is known for his research into prostate cancer screening. [6] In 2011, he published a study which found that PSA velocity—the change in the blood level of prostate-specific antigen (PSA)--was not a more accurate predictor of prostate cancer than comparing PSA levels to a specific threshold. [7]
In fluid dynamics, dynamic pressure (denoted by q or Q and sometimes called velocity pressure) is the quantity defined by: [1] = where (in SI units): q is the dynamic pressure in pascals (i.e., N/m 2, ρ (Greek letter rho) is the fluid mass density (e.g. in kg/m 3), and; u is the flow speed in m/s.
What Your PSA Test Results Mean. THE PSA IS a good initial “check engine light” for the prostate, says Garrett Pohlman, M.D., a urologist and host of The Prostate Health Podcast. But it can ...
Particle size analysis, particle size measurement, or simply particle sizing, is the collective name of the technical procedures, or laboratory techniques which determines the size range, and/or the average, or mean size of the particles in a powder or liquid sample.
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Also, recoil can alternatively be measured by recoil velocity or recoil energy instead of by recoil impulse. An alternative formula for simplified recoil measurement which also takes into account firearm weight, gun powder weight and the velocity of the gun powder gases has been suggested: [ 6 ]