By Herman P. Schwan (auth.), Solomon M. Michaelson, Morton W. Miller, Richard Magin, Edwin L. Carstensen (eds.)
During the final 30 years, there was a outstanding devel opment and raise within the variety of procedures and units that make the most of or emit non-ionizing radiant energies reminiscent of micro waves, a sort of electromagnetic wave strength and ultrasound consultant of mechanical vibration. those energies are utilized in all sectors of our society for army, business, telecommunications, clinical, and shopper purposes. extra lately, using ultrasound in biology and drugs has been significantly multiplied. those raises in resources of non ionizing radiant power have led to transforming into curiosity at the a part of govt regulatory organizations, commercial and mili tary physicians, learn staff, clinicians, or even environ mentalists. even supposing there's details on biologic results and strength dangers to guy from publicity to microwaves or ultrasound, significant confusion and incorrect information has permeated not just the general public press but additionally a few medical and technical guides. curiosity within the biologic results of excessive frequency currents built at the start of the current century. This used to be by way of the advent of "u1trashortwave" treatment. through the latter a part of global battle II, the U. S. army providers took an interest within the attainable risks to group of workers operating round microwave resources, and the place of work of Naval examine of the U. S. military started to sponsor learn at the biologic results of microwaves in 1948. In 1956, the U. S.
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Additional info for Fundamental and Applied Aspects of Nonionizing Radiation
Direct measurements of energy reflected, diffracted and transmitted by an object, can provide information concerning the absorption properties of that obj ect.
Serine and threonine (36), glycine (1,18), glutamic acid, aspartic acid and alanine (1) and arginine and lysine (19). Absorption maxima have been observed within the pH ranges 2 to 4 and 11 to 13, with such peaking being described quantitatively by assuming that the proton transfer reaction dominates the absorption process. When the pH of the aqueous biopolymer solutions is varied alteration of the molecular charge distribution occurs thus affecting the conformation of the biopolymer. Here, buried amino acid side chains of globular proteins become exposed to the environment of the solvent and thereby affect the acoustical properties of the solution.
BABIJ I am not even sure about causimetry, because that seems to imply that the radiation you're measuring causes something or other. In ultrasound. we're not even sure whether it causes something. I am interested in hearing Dr. Suess talk about ideas for establishing something analogous to ICRU. I don't know whether this is the right moment, but sometime I would be interested to hear him perhaps say a bit more about this. I don't know how familiar people here are with this situation, but in the ionizing radiation field, there are these rather remarkable organizations, the International Commission on Radiological Units and Measurements and the International Commission on Radiological Protection, which have succeeded in setting themselves up as organizations of the scientific community, rather than as agencies of government.
Fundamental and Applied Aspects of Nonionizing Radiation by Herman P. Schwan (auth.), Solomon M. Michaelson, Morton W. Miller, Richard Magin, Edwin L. Carstensen (eds.)