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Showing 1 to 20 of 112 for “"ultraviolet radiation"”.
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Characterising the biological response to ultraviolet radiation
… at the DNA damage response following UVA irradiation, and the data presented here shows distinct differences in the mechanism underpinning the DNA damage response in directly irradiated cells and in the UVA bystander cells. The response following UVA has also been shown to be distinct to …
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Photochemistry of ethylene with infrared and ultraviolet radiation
Abstract not available.
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Ultraviolet Radiation and Carotenoid Pigmentation in Symbiotic Anthozoans
… pigmentation and the role of carotenoids as ultraviolet radiation (UVR) photoprotectants and 2) the repopulation and photoadaptive response of symbiotic algae (i.e., zooxanthellae) after bleaching. An experiment was conducted to partition the effects of UVA (320 - 400nm), photosynthetically …
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Regulation of BubR1 by Ultraviolet Radiation: Implications in Skin Cancer
… risk factor of NMSC is prolonged exposure to ultraviolet (UV) radiation. UV radiation acts as both the tumor initiator and tumor promoter by causing molecular and cellular stress and DNA damage in cells within the skin, leading to mutations that promote the development of skin cancer. BubR1 is …
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The Degradation and Stabilisation of Epoxide Resins to Ultraviolet Radiation
… one amine and the other anhydride cured, to ultraviolet light. The method of study was by investigation of the changes in both cured resins and the monomers from which they were synthesised. Also, because of the intractable nature of the cured structures, the degradation of a number of model …
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X and Ultraviolet Radiation From Accreting Non-Magnetic Degenerate Dwarfs
Made available in DSpace on 2015-05-13T15:22:13Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7820984.PDF: 5219161 bytes, checksum: 06e98661cbf36ae706c03af2d786212a (MD5) Previous issue date: 1978
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Pilot Awareness and Preventative Measures of Ultraviolet Radiation Effects at Altitude
Ultraviolet radiation exposure to pilots while flying at altitude is an issue that has not been widely distributed to the aviation community. Ultraviolet radiation can have long term effects on pilots, and yet there remains a gap in the practical understanding and the preventative measures that can …
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Reduction of Microbial Load on Boneless, Skinless Chicken Breast Using Ultraviolet Radiation
This study examined the effectiveness of UV radiation in reducing numbers of naturally occurring aerobic psychotrophic bacteria, lactic acid bacteria, Campylobacter and surface inoculated E. coli on split, boneless, skinless chicken breasts and the effects the UV treatments had on the taste of the …
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Efficacy of Ultraviolet Radiation to Control Lactic Acid Bacteria in Wine Must
The use of shortwave ultraviolet (UV<sub>c</sub>) radiation to control lactic acid bacteria (LAB) in wine production was studied. A simulated wine sterilizer was built using a commercially sourced ultraviolet (UV) sterilizer commonly used in aquariums and ponds. After growing cultures in test …
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The role of eicosanoids in the human skin's response to ultraviolet radiation.
Erythema is a hallmark skin response to excessive ultraviolet radiation (UVR) and is associated with cutaneous inflammation. Both are mediated by inflammatory mediators including nitric oxide (NO), prostaglandin E2 (PGE2) and chemoattractants such as 12-hydroxyeicosatetraenoic acid (12-HETE) …
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PIKK-dependent activation of the DNA damage response by long wavelength ultraviolet radiation
Ultraviolet radiation (UV) is one of the main risk factors that increase a person’s chance of developing skin cancer. UV is divided into three subtypes, called UVA, UVB and UVC. UVA and UVB both have the ability to cause different types of DNA damage. Our understanding of UVA and its mechanism of …
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Characteristics of Multilayer Mirrors in the X-ray and Extreme Ultraviolet Radiation Ranges
… reflective elements for the X-ray and extreme ultraviolet radiation ranges. -- The first central theme was to present various designs for the requirements of soft X-ray microprobes, EUVL lithography systems and high harmonic generation sources, i.e. monochromator, broad-angle supermirror, …
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Development of a Ground Based Atomic Oxygen and Vacuum Ultraviolet Radiation Simulation Apparatus
… space environment include Atomic Oxygen, AO, and Ultraviolet, UV, radiation. UV radiation becomes more severe in space as there is no atmosphere to attenuate incoming photons, thereby exposing spacecraft to radiation that never reaches the surface of the Earth. Overall, space vehicles are exposed …
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Ultraviolet Radiation as a Regulator of Grapevine Leaf Physiology and Berry and Wine Quality
… estudios acerca de los efectos de la radiación ultravioleta (UV) sobre la vid, pero esta Tesis Doctoral presenta, por primera vez, una perspectiva global e integradora sobre dichos efectos, incluyendo enfoques básicos y aplicados desde la planta hasta el vino en condiciones de campo típicamente …
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The Role of Mucus in the Ultraviolet Radiation Protection of <em>Porites astreoides</em>
<p>High intensities of ultraviolet radiation (UVR) have been shown to detrimentally effect the growth, reproduction, and photosynthetic physiology of corals inhabiting tropical marine waters. One protective mechanism utilized by marine organisms, including corals, is the production of …
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Ultraviolet radiation and aquatic bryophytes: physiological damage and protection mechanisms under laboratory and field conditions
… estratosférico provoca un aumento de radiación ultravioleta-B (UV-B) en la Biosfera, lo que puede afectar a los organismos fotosintéticos. Dado que los briófitos de arroyos de montaña se han estudiado poco en este sentido, el objetivo de esta Tesis era profundizar en el conocimiento de las …
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Experimental investigation of the emission of high-brightness extreme ultraviolet radiation from laser-plasma interactions
… sources of both high energy particles and radiation beams.To date, theoretical and experimental work on radiation production from the laser wakefield accelerator has focussed on the emission of few keV to 1 MeV photons from electrons undergoing betatron oscillations inside the plasma …
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Effects of Ultraviolet Radiation on the Electrical and Permeative Properties of the Toad Urinary Bladder
Made available in DSpace on 2014-12-09T18:53:06Z (GMT). No. of bitstreams: 1 6901418.pdf: 4166382 bytes, checksum: 6bbd218d977302a9d6a34c222dad7bd8 (MD5) Previous issue date: 1968
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