scholarly journals Chemo preventive effect of methanol extract of Anacardium occidentale nut shell on ultra-violet radiation induced skin damage

2020 ◽  
Vol 14 (9) ◽  
pp. 488-495
Author(s):  
N. M. Pepple ◽  
W. U. Ekoriko ◽  
F. M. Idih ◽  
V. O. Chidozie
Keyword(s):  
Methanol Extract ◽  
Ultra Violet ◽  
Anacardium Occidentale ◽  
Skin Damage ◽  
Preventive Effect ◽  
Ultra Violet Radiation ◽  
Radiation Induced ◽  
Violet Radiation

scholarly journals Polyimide: From Radiation-Induced Degradation Stability to Flat, Flexible Devices

2021 ◽  
Author(s):  
Prashant S. Alegaonkar ◽  
Vasant N. Bhoraskar ◽  
Sudha V. Bhoraskar
Keyword(s):  
Performance Analysis ◽  
Chemical Properties ◽  
Ultra Violet ◽  
Heavy Ion ◽  
Harsh Environment ◽  
Space Technology ◽  
Flexible Devices ◽  
Ultra Violet Radiation ◽  
Radiation Induced ◽  
Violet Radiation

Polyimide (PI, PMDA-ODA, C22H11N2O5, Kapton-H), is a class of polymer, extensively used in microelectronics and space technology, due to its exceptional mechanical, dielectric, and chemical properties. In space, PI heat shield experiences a harsh environment of energetic electrons, ultra-violet radiation, and atomic oxygen, causing degradation and erosion. Radiation-assisted physicochemical surface modulations in PI, in view of understanding and reducing the degradation in laboratory-based systems, are discussed in the chapter. Strategies for the design and development of 2D, flat, and flexible electromechanical devices by swift heavy ion induced bulk modifications in PI are also described. Fabrication of a couple of such devices, including their performance analysis, is presented.

scholarly journals Evaluation of the Antioxidant Properties of Vitellaria paradoxa Seed Extract and Its Effect of Ultra Violet Radiation Induced Skin Damage

2020 ◽  
pp. 1-7
Author(s):  
Favour Moses Idih ◽  
Uyo Ruth Jeremiah ◽  
Hafsat Enesi ◽  
Oluseyi Valerie Alagbe
Keyword(s):  
Antioxidant Properties ◽  
Ultra Violet ◽  
Negative Control ◽  
Seed Extract ◽  
Control Group ◽  
Skin Damage ◽  
Vitellaria Paradoxa ◽  
Ultra Violet Radiation ◽  
Group 2 ◽  
Violet Radiation

Ultra violet radiation (UVR) is relevant in nature, but despite its importance it has been labeled as a causative agent in skin damage. This study was done to evaluate the antioxidant properties of shea butter and its role in the prevention of skin damage. Six groups of albino rats with three rats per group were used, group 2-5 were exposed to UVR at the dose of 180 mJ/cm2 with group 1 serving as the normal control, group 2 (negative control), group 2-5 (treated groups) and group 6 (normal + treated). The treatment was done by topical application of Vitellaria parodoxa seed extract 5 minutes after exposure to UVR. The in-vitro antioxidant properties determined using DPPH radical scavenging activity revealed that the aqueous extract of Vitellaria paradoxa possesses high antioxidant activity. There was an increase in the concentration of GSH of the treated animals when compared to the negative control (p<0.05). The histopathology result shows the extract had a protective effect on the skin tissue of the experimental animals. This study suggests the extract has the potential to serve as a chemopreventive agent against UV-induced skin damage by neutralizing the effects of free radicals generated by ultraviolet radiation and as such can be recommended for use as UVR screen which could in turn reduce the risk of UVR skin damage.

Label free assessment of ultra-violet radiation induced damages in skin cells (Conference Presentation)

2018 ◽  
Author(s):  
Surya P. Singh ◽  
Sungsam Kang ◽  
Jeon Woong Kang ◽  
Peter T. C. So ◽  
Ramachandra R. Dasari ◽  
...  
Keyword(s):  
Ultra Violet ◽  
Label Free ◽  
Skin Cells ◽  
Ultra Violet Radiation ◽  
Radiation Induced ◽  
Violet Radiation

Ultra-Violet Radiation and Varicose Ulcers

BMJ ◽  
1927 ◽  
Vol 2 (3479) ◽  
pp. 472-472
Author(s):  
M. Weinbren
Keyword(s):  
Ultra Violet ◽  
Ultra Violet Radiation ◽  
Violet Radiation

Ultra-Violet Radiation and the Production of Twins and Double Monsters

1931 ◽  
Vol 4 (3) ◽  
pp. 461-485 ◽  
Author(s):  
Marie A. Hinrichs ◽  
Ida T. Genther
Keyword(s):  
Ultra Violet ◽  
Ultra Violet Radiation ◽  
Violet Radiation
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