Artificial UV radiation as a result of welding and uveal melanoma

2015 ◽  
Vol 2015 (12) ◽  
Author(s):  
J. Hiller ◽  
H. Drexler ◽  
W. Weistenhöfer
Keyword(s):  
Uv Radiation ◽  
Uveal Melanoma ◽  
Artificial Uv

scholarly journals Youth Access to Artificial UV Radiation Exposure

2009 ◽  
Vol 145 (9) ◽  
Author(s):  
Latrice C. Pichon ◽  
Joni A. Mayer ◽  
Katherine D. Hoerster ◽  
Susan I. Woodruff ◽  
Donald J. Slymen ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Uv Radiation ◽  
Artificial Uv

scholarly journals Seasonal photoreactivity of dissolved organic matter from lakes with contrasting humic content

2000 ◽  
Vol 57 (5) ◽  
pp. 875-885 ◽  
Author(s):  
Måns J Lindell ◽  
H Wilhelm Granéli ◽  
Stefan Bertilsson
Keyword(s):  
Organic Acids ◽  
Uv Radiation ◽  
Dissolved Inorganic Carbon ◽  
Sampling Period ◽  
Low Molecular Weight ◽  
Ultraviolet A ◽  
Surface Layers ◽  
Hydraulic Residence Time ◽  
Doc Concentration ◽  
Artificial Uv

We studied seasonal variability in photodegradation of dissolved organic carbon (DOC) resulting from artificial ultraviolet-A (UV-A) and UV-B irradiation. Water samples were taken approximately monthly from the surface layers of two oligotrophic lakes with contrasting humic content, situated in southern Sweden. Lake water was filter-sterilized (0.2 μm) and exposed to artificial UV radiation in quartz tubes. Potential DOC photodegradation, measured as a photoproduction of dissolved inorganic carbon (DIC) and oxalic, malonic, formic, and acetic acid in irradiated samples, was observed throughout the sampling period. In addition, exposure to UV radiation resulted in a decrease in DOC, absorbance, and humic substance fluorescence. The photoproduction of DIC and the low molecular weight (LMW) organic acids varied seasonally, being generally higher in winter and spring (December-May), while DOC appeared to become less photoreactive after the extensive exposure to solar radiation during summer. Production rates of both DIC and LMW organic acids were approximately eight times higher in the humic lake despite that the DOC concentration was only two times higher than in the clearwater lake. This is most probably due to the high input of allochthonous DOC and the resulting higher absorbance to DOC ratio in the humic system. Furthermore, the longer hydraulic residence time in the clearwater system could have resulted in an accumulation of residual DOC, recalcitrant to further photodegradation.

scholarly journals A Study of Corona Discharge in Polymer Insulators by Artificial UV Radiation

2013 ◽  
Vol 62 (5) ◽  
pp. 643-648
Author(s):  
Y.S. Kim ◽  
M.I. Choi ◽  
C.M. Kim ◽  
S.B. Bang ◽  
K.M. Shong ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Uv Radiation ◽  
Polymer Insulators ◽  
Artificial Uv

scholarly journals Sunbed Use Among Belgrade High School Students

2017 ◽  
Vol 9 (1) ◽  
pp. 3-7 ◽  
Author(s):  
Dušan Škiljević ◽  
Lucija Srećković
Keyword(s):  
High School ◽  
High School Students ◽  
Uv Radiation ◽  
Uv Exposure ◽  
Childhood And Adolescence ◽  
School Students ◽  
Skin Cancers ◽  
Highly Sensitive ◽  
Artificial Uv ◽  
Sunbed Use

Abstract Introduction: The incidence of melanoma has been increasing worldwide. Ultraviolet (UV) radiation from the sun and sunbeds are the major risk factors for the development of melanoma and non-melanoma skin cancers. Excessive UV exposure during childhood and adolescence increases the probablity of skin cancer in adulthood. The objective of this study was to analyze the exposure to artificial UV radiation using sunbeds among Belgrade high school students. Material and Methods: The study was conducted using a questionnaire among 549 3rd and 4th grade students in 4 Belgrade high schools. The questionnaire included 10 questions on the sunbed use, attitudes, and general knowledge about effects of UV radiation from sunbeds. Statistical analysis assessed the frequency rate and relative frequency as methods of descriptive statistics. Results: A total of 39% of participants had used a sunbed at least once, and 38% plan on using it in the future. When asked at what age they first used a sunbed, 45.66% of high school students stated that it was at the age of 13 or 14. Most adolescents have used a sunbed less than 5 times (38%), whereas 8% of them used it over 30 times. Conclusion: The awareness of the risks associated with UV exposure in sunbeds is not at a satisfying level among Belgrade high school students. Educational and legislative measures are necessary to protect this highly sensitive population and prevent malignant consequences.

scholarly journals OXIDATIVE STRESS CAUSED BY UV RADIATION AND THE USE OF FTIR METHOD TO STUDY ITS EFFECT ON THE BIOLOGICAL TISSUES

2021 ◽  
pp. 079
Author(s):  
Sofija Andjelic
Keyword(s):  
Oxidative Stress ◽  
Uv Radiation ◽  
Cell Damage ◽  
In Vitro Study ◽  
Biological Tissues ◽  
Ros Generation ◽  
Ros Scavenging ◽  
Artificial Uv ◽  
Uv C

Oxidative stress is caused by an imbalance between reactive oxygen species (ROS) generation and the capacity of antioxidant ROS scavenging systems and plays an essential role in the pathogenesis of many diseases. It is connected with cell damage, such as lipid peroxidation of membranes. One important source of oxidative stress is UV radiation, which can come from the natural environment or artificial sources like welding. While sources of artificial UV radiation emit specific wavelengths depending on the application, occupational exposure to natural UV radiation has a continuous spectrum from 290 nm to 400 nm. Oxidative stress can be measured by synchrotron radiation-based Fourier Transform Infrared (SR-FTIR) microspectroscopy. Oxidative effect of UV can be studied on human postoperative tissue. Here we show an in vitro study of the effect of UV C on the oxidative stress in human eye postoperative tissue.

Sign in / Sign up

Export Citation Format

Share Document