Results 321 to 330 of about 181,983 (371)

PENETRATION OF EPIDERMIS BY ULTRAVIOLET RAYS

Photochemistry and Photobiology, 1966
Abstract— The u.v. transmission characteristics of various epidermal specimens prepared by various methods were measured by a recording spectrophotometer and integrating spheres. Although suction or stretch and heat produced the most satisfactory specimens, transmission data obtained from all specimens were similar and generally resembled that reported
Robert L. Olson, Mark Allen Everett, Edward Yeargers, Robert M. Sayre   +3 more
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"THE ULTRAVIOLET RAY AS A PROPHYLACTIC AGAINST RADIODERMATITIS"

JAMA: The Journal of the American Medical Association, 1925
To the Editor: —In an article entitled "The Ultraviolet Ray as a Prophylactic Against Radiodermatitis" by George C. Andrews and the writer, published inThe Journal, Nov. 28, 1925, several errors were made when quoting from an article by R. H. Rulison entitled "The Prophylaxis of Roentgen-Ray Overdosage," published in The Journal, Nov.
George M. MacKEE, George C. Andrews
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STANDARDIZATION OF ULTRAVIOLET RAYS

Journal of the American Medical Association, 1926
Heliotherapy has gained more and more advocates among the medical profession in the last few years. There is no denying the fact that ultraviolet radiation intelligently used in favorable cases has shown encouraging results. The amount of radiation administered in a single treatment or the total energy applied in a series of treatments varies widely ...
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THE ULTRAVIOLET RAYS OF THE SUN

JAMA: The Journal of the American Medical Association, 1925
The essential importance of ultraviolet rays in medicine has just begun to be appreciated. The action of these rays, as distinct from the visible radiations of the sun, has been known for many years, but physiologists have only recently become fully alive to their significance in relation to the normal and pathologic conditions of man.
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Ultraviolet and X-Ray Spectroscopy [PDF]

, 1998
The higher the energy of the electromagnetic radiation the deeper we can look into the atoms and into the band structure of solids. Thus, for ultraviolet radiation and x rays a new area opens up for spectroscopic investigations. It becomes possible to analyze the structure of the valence band and of lower bands down to the core levels.
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Interaction of X-ray and Ultraviolet Ray in Killing Cells

Nature, 1968
THE importance of DNA as a macromolecular target for cellular inactivation by X-rays and ultraviolet light has been stressed by various authors1. The two mechanisms of inactivation, however, have been suggested to be different2,3. Studies of the killing of various bacteria by X-rays and ultraviolet light have suggested that preliminary exposures to ...
Sukhendu B. Bhattacharjee, Gayaram Bhaumik   +1 more
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ULTRAVIOLET RAYS FOR FINGER PRINTING

JAMA: The Journal of the American Medical Association, 1927
To the Editor: —Having observed the rapidity with which the soluble silver salts become decolorized in the presence of organic fatty acids under the action of the middle chain of ultraviolet rays, I wondered whether or not it could be used as a rapid method of finger-printing.
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The action of ultraviolet rays on amoeba protoplasm [PDF]

Protoplasma, 1933
1. By making centrifuge tests on two species of amoeba,Amoeba proteus andAmoeba dubia, it is possible to determine the effects of ultraviolet rays both on the cortical protoplasm or plasmagel and the internal fluid protoplasm or plasmasol. 2. Ultraviolet radiation causes a pronounced liquefaction of the cortex or plasmagel. 3.
Kathryn Daugherty, L. V. Heilbrunn
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ULTRAVIOLET RAY THERAPY IN DERMATOLOGY

Archives of Dermatology, 1924
Twenty-seven years have elapsed since Finsen introduced ultraviolet ray therapy in the treatment of lupus vulgaris and other cutaneous affections. It would seem reasonable to believe that in view of the many experiments since that time in the application of these rays by numerous apparently qualified observers, there would be a reasonable unanimity of ...
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An embedded system for ultraviolet ray monitoring

2013 Annual International Conference on Emerging Research Areas and 2013 International Conference on Microelectronics, Communications and Renewable Energy, 2013
This paper describes read-out electronics for Quartz Tuning Fork (QTF) sensor for monitoring UV rays using Programmable System on Chip and Virtual Instrument programming in Lab VIEW, a graphical language. The QTF sensor has wider range of applications like low temperature measurement, electromagnetic radiation measurement like visible, UV, IR and ...
S. Muruganand, Azha Periasamy, K. G. Padmasine   +2 more
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