Results 11 to 20 of about 3,605,857 (342)

On the Ultraviolet Rays.

open access: yesJOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN, 1928
此の講演は自分の研究の結果を發表したのではなく, 今日まで多くの人々によつて研究された事柄を目次に示すやうに分類し, 紫外線の呈する多くの作用を述べ, それが實際上如何なる方面に應用されて居るかを解説したものである。日光は保健上有効であると云ふことは二千年の昔から知られて居たが, それは學術的に根据はなかつた。日光の中に紫外線のあることは十九世紀の始めに發見された。それから漸次日光の中の紫外線が人體に有効であると云ふことが知られ, 紫外線の分量の多い高山に療養所が出來るやうになつた。而して今日では尚張い紫外線を出す人工的の光源を病症治癒のために用ひるやうになつた。既は紫外線の有する殺菌作用及生理的亢進作用に依るのである。又紫外線の有する螢光作用及燐光作用は寳石, 手形 ...
Kôgorô Yamada
openaire   +3 more sources

Emerging Strategies to Protect the Skin from Ultraviolet Rays Using Plant-Derived Materials. [PDF]

open access: yesAntioxidants (Basel), 2020
Sunlight contains a significant amount of ultraviolet (UV) ray, which leads to various effects on homeostasis in the body. Defense strategies to protect from UV rays have been extensively studied, as sunburn, photoaging, and photocarcinogenesis are ...
Boo YC.
europepmc   +2 more sources

Nickel-Doped Cerium Oxide Nanoparticles: Green Synthesis Using Stevia and Protective Effect against Harmful Ultraviolet Rays. [PDF]

open access: yesMolecules, 2019
Nanoparticles of cerium oxide CeO2 are important nanomaterials with remarkable properties for use in both industrial and non-industrial fields. In a general way, doping of oxide nanometric with transition metals improves the properties of nanoparticles ...
Khatami M   +7 more
europepmc   +2 more sources

Effects of Long Ultraviolet Rays on Human Skin: Photoprotective or Photoaugmentative?

open access: bronzeJournal of Investigative Dermatology, 1972
The effects of long ultraviolet (LUV) rays on human skin are generally believed to be either harmless or protective against sunburn damage. Responses to LUV alone, LUV plus sunburn radiation, and sunburn radiation alone were evaluated both clinically and
Isaac Willis   +2 more
openalex   +2 more sources

A Versatile Photochromic Dosimeter Enabling Detection of X‐Ray, Ultraviolet, and Visible Photons

open access: yesLaser & Photonics Reviews, 2023
An accurate measurement of radiation doses is required to ensure efficient use of electromagnetic radiation in medical diagnostics, agriculture, or general lighting applications. Yet, existing dosimeters usually face the issues of cumbersome manipulation,
Zetian Yang   +7 more
semanticscholar   +1 more source

Inactivation rate of Bacillus subtilis spores irradiated by ultraviolet rays.

open access: bronze, 1981
The UV inactivation of Bacillus subtilis spores, widely used for examining sterility, was kinetically studied to obtain fundamental information on the design and performance evaluation of practical sterilizers irradiated by ultraviolet rays.
Takuo Sugawara   +3 more
openalex   +3 more sources

Report on some Biological Responses to High Electric Fields and Indirect Action of Ultraviolot Rays [PDF]

open access: yesActa Medica Iranica, 1960
The similarities of effects produced hy radiation, electric field, ultraviolet rays and ozone on the platelet and blood corpuscles suggest the presence of a common factor. It is assumed that the effects of radiation is due the hydroperoxyl radical and we
Kamal Djanab
doaj   +2 more sources

Ultraviolet radiation emitted by lamps, TVs, tablets and computers: are there risks for the population? [PDF]

open access: yesAnais Brasileiros de Dermatologia, 2015
The frequent human exposure to various types of indoor lamps, as well as other light sources (television monitors, tablets and computers), raises a question: are there risks for the population?
Ida Alzira Gomes Duarte   +2 more
doaj   +2 more sources

Possible values of UV index in Serbia [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2008
INTRODUCTION UV Index is an indicator of human exposure to solar ultraviolet (UV) rays. The numerical values of the UV Index range from 1-11 and above. There are three levels of protection against UV radiation; low values of the UV Index - protection is ...
Letić Milorad
doaj   +1 more source

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