Results 241 to 250 of about 418,341 (294)

THE ULTRAVIOLET RAYS OF THE SUN

JAMA - 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.
Alfred F Hess
exaly   +2 more sources

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
M A, Everett, E, Yeargers, R M, Sayre, R L, Olson   +3 more
openaire   +2 more sources

Comments on Ultraviolet Rays

New England Journal of Medicine, 1933
exaly   +2 more sources

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 ...
G, Bhaumik, S B, Bhattacharjee
openaire   +2 more sources

THE EFFECT OF ULTRAVIOLET RAYS

Journal of the American Medical Association, 1925
The action of substances affecting growth, both hormones and vitamins, has developed unique biologic contacts. The work of Hess 1 and others has shown the power of ultraviolet rays in imparting antirachitic properties to vegetable oils. It has further been demonstrated recently that ultraviolet rays have a destructive action on insulin.
EDGAR ALLEN, M. M. ELLIS
openaire   +1 more source

FILTERED ULTRAVIOLET RAYS

Archives of Dermatology and Syphilology, 1936
The phenomenon of fluorescence noted in many substances when they are observed under filtered ultraviolet rays is of great value to the dermatologist. Margarot and Deveze 1 first drew attention to the value of the rays as a diagnostic measure in infections of the scalp with Microsporon. Other observers 2 have confirmed their observations.
openaire   +1 more source

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 ...
openaire   +1 more source

"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.
openaire   +1 more source

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 ...
openaire   +1 more source

The Ultraviolet Rays

The American Journal of the Medical Sciences, 1928
openaire   +1 more source