Constant reduction of stratospheric ozone layer and the increase of ultraviolet radiation intensity were observed in last twenty years of the 20th century. Four tree species; Acacia amplicepsis, Acacia gerradii, Casuarina glauca and Eucalyptus intertexta grown in Experimental station of Food and Agriculture Sciences Collage, King Saud University were used to study the impact of UV-C on potentia...

The increased exposure to ultraviolet (UV) radiation due to ozone depletion is one of the most serious global health problems. The UV exposure is known to cause skin carcinoma, cataract and deteriorated immune function, but for countries like Japan, the magnitude of health effects of UV radiation is yet to be elucidated. The International Workshop on the Health Effects of Ultraviolet Radiation ...

conclusions: the hereditary stability analysis of the uv mentioning 45 minutes revealed the uv exposure time for mutants and 3 represented the colony taken from the plate irradiated for 45 minutes mutant showed that the production of avermectin b1b remained constant and no reverse mutation occurred after 15 generations. results: avermectin b1b-hyper-producing mutant, produced using these three ...

Recent global radiation fears reflect the urgent need for a new modality that can simply determine if people are in a radiation risk of developing cancer and other illnesses. Ultraviolet (UV) radiation has been thought to be the major risk factor for most skin cancers. Although various biomarkers derived from the responses of human cells have been revealed, detection of these biomarkers is cumb...

The objective of this investigation was to study the effect artificial ultraviolet (UV) radiation varying wavelengths on degradation whole human blood DNA and semen over time lengths exposure. degrades rapidly when exposed environmental factors like high temperature UV-radiation. extent damage done in relation exposure UV above 100°C that make samples unsuitable for forensic analysis has not ye...

BACKGROUND Exposure to solar ultraviolet radiation is a well-known cause of skin cancer. This is problematic for outdoor workers. In Denmark alone, occupational skin cancer poses a significant health and safety risk for around 400,000 outdoor workers. Objective measures of solar ultraviolet radiation exposure are needed to help resolve this problem. This can be done using personal ultraviolet r...

High-energy wavelengths in the ultraviolet-B (UVB, 280-315 nm) and the UVA (315-400-nm) portion of the spectrum are harmful to terrestrial and aquatic organisms. Interestingly, UVA is also involved in the repair of UV induced damage. Organisms living in shallow coral reef environments possess UV absorbing compounds, such as mycosporine-like amino acids, to protect them from UV radiation. While ...

We used a natural experiment to test whether wildfire smoke induced changes in the vertical distribution of zooplankton in Lake Tahoe by decreasing incident ultraviolet radiation (UV). Fires have a variety of effects on aquatic ecosystems, but these impacts are poorly understood and have rarely been observed directly. UV is an important driver of zooplankton vertical migration, and wildfires ma...

Introduction The evolution of most forms of life has occurred in an environment exposed to the ultraviolet (UV) and visible radiation emanating from the sun. When molecules in living cells absorb photons in this region of the electromagnetic spectrum they are promoted to excited electronic states and this process can have profound biological consequences. In general, visible wavelengths (400-78...