Several-fold enhancement of biologically effective ultraviolet radiation levels at McMurdo Station Antarctica during the 1990 ozone “hole”

1992 ◽  
Vol 19 (10) ◽  
pp. 1013-1016 ◽  
Author(s):  
Knut Stamnes ◽  
Zhonghai Jin ◽  
James Slusser ◽  
Charles Booth ◽  
Timothy Lucas
Keyword(s):  
Ultraviolet Radiation ◽  
Ozone Hole ◽  
Mcmurdo Station

scholarly journals The Antarctic ozone hole during 2015 and 2016

2019 ◽  
Vol 69 (1) ◽  
pp. 16
Author(s):  
Matthew B. Tully ◽  
Andrew R. Klekociuk ◽  
Paul B. Krummel ◽  
H. Peter Gies ◽  
Simon P. Alexander ◽  
...  
Keyword(s):  
Ultraviolet Radiation ◽  
Ozone Depletion ◽  
Volcanic Eruption ◽  
Stratospheric Aerosol ◽  
Satellite Observations ◽  
Ozone Hole ◽  
Maximum Area ◽  
Antarctic Ozone ◽  
The Antarctic ◽  
Antarctic Ozone Hole

We reviewed the 2015 and 2016 Antarctic ozone holes, making use of a variety of ground-based and spacebased measurements of ozone and ultraviolet radiation, supplemented by meteorological reanalyses. The ozone hole of 2015 was one of the most severe on record with respect to maximum area and integrated deficit and was notably longlasting, with many values above previous extremes in October, November and December. In contrast, all assessed metrics for the 2016 ozone hole were at or below their median values for the 37 ozone holes since 1979 for which adequate satellite observations exist. The 2015 ozone hole was influenced both by very cold conditions and enhanced ozone depletion caused by stratospheric aerosol resulting from the April 2015 volcanic eruption of Calbuco (Chile).

scholarly journals Ocular and dermatologic health effects of ultraviolet radiation exposure from the ozone hole in southern Chile.

1995 ◽  
Vol 85 (4) ◽  
pp. 546-550 ◽  
Author(s):  
O D Schein ◽  
C Vicencio ◽  
B Muñoz ◽  
K N Gelatt ◽  
D D Duncan ◽  
...  
Keyword(s):  
Ultraviolet Radiation ◽  
Radiation Exposure ◽  
Health Effects ◽  
Ozone Hole ◽  
Southern Chile ◽  
Ultraviolet Radiation Exposure

scholarly journals Stratospheric ozone fluctuation and ultraviolet radiation over Serbia

2011 ◽  
Vol 26 (2) ◽  
pp. 119-125 ◽  
Author(s):  
Jugoslav Nikolic ◽  
Vladan Ducic ◽  
Natasa Martic-Bursac
Keyword(s):  
Ultraviolet Radiation ◽  
Interannual Variability ◽  
Direct Effect ◽  
Stratospheric Ozone ◽  
Ozone Layer ◽  
Ozone Hole ◽  
Health Implications ◽  
The Earth ◽  
Volcanic Activities

Increased ultraviolet radiation potentially detrimental to health is a direct effect of the reduced ozone layer of the Earth?s atmosphere. Stratospheric ozone over the territory of Serbia and immediate surrounding depleted in the considered period of 1979-2008; its amount reduced by 7.6%. Solar and volcanic activities have significant effect on the interannual variability of the stratospheric ozone. Ozone layer over Serbia is 13.8% thicker than the planetary layer, with the ozone hole forming once in five years on average without serious health implications.

Applications of Photoelectron Microscopy

1976 ◽  
Vol 34 ◽  
pp. 506-507
Author(s):  
William J. Baxter
Keyword(s):  
Electron Microscopy ◽  
Thermal Decomposition ◽  
Chemical Composition ◽  
Ultraviolet Radiation ◽  
Thin Layer ◽  
Edge Effects ◽  
Electron Optics ◽  
Surface Layers ◽  
Crystalline Orientation ◽  
Fluorescent Screen

In this form of electron microscopy, photoelectrons emitted from a metal by ultraviolet radiation are accelerated and imaged onto a fluorescent screen by conventional electron optics. image contrast is determined by spatial variations in the intensity of the photoemission. The dominant source of contrast is due to changes in the photoelectric work function, between surfaces of different crystalline orientation, or different chemical composition. Topographical variations produce a relatively weak contrast due to shadowing and edge effects.Since the photoelectrons originate from the surface layers (e.g. ∼5-10 nm for metals), photoelectron microscopy is surface sensitive. Thus to see the microstructure of a metal the thin layer (∼3 nm) of surface oxide must be removed, either by ion bombardment or by thermal decomposition in the vacuum of the microscope.

803: Interactions Between Ultraviolet Radiation and Polymorphisms in the Vitamin D Receptor Gene Mediate Prostate Cancer Susceptibility

2006 ◽  
Vol 175 (4S) ◽  
pp. 260-260
Author(s):  
Nicholas J. Rukin ◽  
Samuel J. Moon ◽  
Dhaval Bodiwala ◽  
Christopher J. Luscombe ◽  
Mark F. Saxby ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Vitamin D ◽  
Ultraviolet Radiation ◽  
Vitamin D Receptor ◽  
Cancer Susceptibility ◽  
Receptor Gene ◽  
Vitamin D Receptor Gene ◽  
Prostate Cancer Susceptibility
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