Results 151 to 160 of about 30,136 (183)

Cyanobacterial Responses to UV Radiation

2006
The influence of ultraviolet radiation (UVR) on populations of microorganisms has been the subject of serious investigation for at least the past 20–25 years. UVR that is applicable to the Earth’s surface (past or present) is arbitrarily divided into UVA (400–320 or 315 nm), UVB (280–320 or 315 nm), UVC (∼180–280 nm). Although essentially all organisms
Richard W. Castenholz, Ferran Garcia-Pichel   +1 more
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Quantifying UV radiation [PDF]

, 2012
In this handbook we discuss methods relevant to research on the responses of plants to ultraviolet (UV) radiation. We also summarize the knowledge needed to make informed decisions about manipulation and quantification of UV radiation, and the design of UV experiments. We give guidelines and practical recommendations for obtaining reliable and relevant
Lars Olof Björn, Andy McLeod, Pedro J Aphalo, Andreas Albert, Anders V Lindfors, Anu Heikkilä, Predrag Kolar, Lasse Ylianttila, Gaetano Zipoli, Daniele Grifoni, Pirjo Huovinen, Iván Gómez, Félix López Figueroa   +12 more
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UV radiation ocular exposure dosimetry

Documenta Ophthalmologica, 1995
Cataractogenesis by ultraviolet radiation (UVR) has been shown convincingly by a host of different laboratory studies. However, crucial epidemiological evidence linking chronic UVR exposure of age-related cataract appears to be lacking, since different environmental studies have led to apparently conflicting results.
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Trends in UV radiation

International Journal of Environmental Studies, 1996
Reductions in atmoshperic ozone levels are expected to result in increases of ultraviolet‐B (UV‐B) radiation reaching the earth's surface. The relationship between UV‐B and ozone is now well established from laboratory measurements, field measurements, and theoretical calculations.
Sasha Madronich, Elisabeth Weatherhead, Siri J. Flocke   +2 more
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UV Radiation and Pelagic Bacteria

2002
The role of ultraviolet radiation (UVR) on (sub)polar aquatic food webs received considerable attention over the past two decades since the polar regions are the areas most affected by ozone depletion. These areas are also important fish grounds and the fish yield is determined by the efficiency in the transfer of carbon and energy through the lower ...
Herndl, G.J., Obernosterer, I
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UV RADIATION

Ophthalmic Surgery, Lasers and Imaging Retina, 1982
R H, Keates, D E, Genstler
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UV Radiation Damage

American Intra-Ocular Implant Society Journal, 1984
G A, Peyman, R, Zak, H, Sloane
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Disinfection with UV-Radiation

1988
There are many well-advanced techniques for the disinfection of surface water producing the hygienic quality required for drinking water. Most of these techniques (e.g. gassing with chlorine, chlorine dioxide, or ozone) make use of oxidation of the organic matter in water. This does not exclusively degrade the object of interest, i.e.
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UV Radiation in Photomorphogenesis

1983
The ultraviolet range of the electromagnetic spectrum has been classified as vacuum UV from 100 nm to 200 nm, far UV from 200 nm to 300 nm, and near UV from 300 nm to 400 nm. The vacuum UV, which is absorbed by gaseous compounds in the air, such as oxygen or water vapour, can only be transmitted if generated in a vacuum.
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UV Radiation and Cytokines

1997
There is solid evidence for the existence of a complex network of interacting soluble mediators which influence immunologic and inflammatory reactions (Luger and Schwarz, 1990). These mediators include cytokines, growth factors, eicosanoids and neuropeptides.
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