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U of V is an abbreviation that can mean A university in Canada University of Victoria Any of several universities in the United States University of Vermont University of Virginia See also UV disambiguation UV disambiguation page for things that can be abbreviated UV disambig Category abbreviations ... more details
light from the ultraviolet UV spectrum only. Overview Image PIA07908.jpg thumb Ultraviolet astronomy ... about 1 nm to 400 nm is known as ultraviolet radiation . UV spectrographers divide this range into three bands near UV 380 200 nm wavelength abbrev. NUV far UV or vacuum UV 200 10 nm abbrev. FUV or VUV extreme UV 1 31 nm abbrev. EUV or XUV . Only near UV is of interest for UV ..., and lens glass is opaque below about 180 nm. UV photographers subdivide the near UV into Long wave UV that extends from 320 to 400 nm, also called UV A, Medium wave UV that extends from 280 to 320 nm, also called UV B, Short wave UV that extends from 200 to 280 nm, also called UV ... ways to use UV radiation to take photograph s reflected ultraviolet and ultraviolet fluorescence ... , criminology and theatre theatrical applications. Sunlight is the most available free UV radiation .... A bright and dry day is much richer in UV radiation and is preferable to a cloudy or rainy day. Another ... reflector. Some flash units have a special UV absorbing glass over the flash tube , which must be removed ... which otherwise suppresses UV. Special UV lamps known as black light fluorescence tubes are used for long wave ultraviolet photography. Most modern UV sources are based on a mercury element mercury ... long wave UV source. Equipment and techniques Reflected UV photography Image UV Portrait.jpg thumb 300px A portrait taken using only UV light between the wavelengths of 335 and 365 nanometers. In reflected UV photography the subject is illuminated directly by UV emitting lamps radiation sources . A UV transmitting, visible light blocking filter photography filter is placed on the lens, that allows ... colored glass. Most types of glass will allow long wave UV to pass, but absorb all the other UV wavelength ... 180..200 nm. Lenses based purely on quartz show a distinct focus shift between visible and UV ... shift. Examples of the latter type are the Nikon UV Nikkor 105 mm, the Hasselblad Zeiss UV Sonnar ... more details
VUV may stand for The Vanuatu vatu vatu , the official currency of Vanuatu Vacuum UV , ultraviolet radiation that is absorbed by air disambig de VUV fr VUV it VUV ... more details
Refimprove date July 2011 The ultraviolet index or UV Index is an international standard measurement of the strength of the ultraviolet UV radiation from the sun at a particular place on a particular day ... people to effectively protect themselves from UV light, of which excessive exposure causes sunburn ... Human health related effects of UV radiation health effects of ultraviolet light . Public health ... and wearing a hat when the UV index is 3 or higher see the table below for complete recommendations. Description The UV index is a linear scale, with higher values representing the risk level of skin damage due to UV exposure. An index of 0 corresponds to zero UV irradiation, as is essentially the case ... . The numbers are related to the amount of UV radiation reaching the surface of the earth ... because UV power is spread unevenly over a spectrum of wavelengths the shorter wavelengths are much ... in physical units, but is a good indication of likely skin damage. While the UV index can be calculated from a direct measurement of the UV spectral power at a given place, the value given in weather ... predictions, it is essentially the same index as that which would be measured. The UV index announced in Weather forecasting weather forecasts is a prediction of how strong the actual UV intensity ..., the amount of UV radiation that will reach the surface. The calculations are weighted in favor of the UV wavelength s to which Skin human skin is most sensitive according to the McKinlay Diffey Erythema action spectrum. Providing the public with an easy to understand daily forecast of UV intensity is the main purpose of the UV index. Some inexpensive portable devices also measure actual UV index. Definition The UV index is a number linearly related to the intensity physics intensity of UV ... measured in Watt W Square metre m sup 2 sup because the UV of concern occupies a spectrum ... wavelengths being much more significant. The UV power spectrum strictly expressed in watts per square ... more details
Parsol is the trade name of a number of UV absorbers Avobenzone Parsol 1789 4 Methylbenzylidene camphor Parsol 5000 Polysilicone 15 Parsol SLX disambig ... more details
Mexoryl is the trade name of a number of UV absorbers. The most commonly used are Drometrizole trisiloxane Mexoryl XL Ecamsule Mexoryl SX, terephthalylidene dicamphor sulfonic acid disambig ... more details
Eusolex is the trade name of a number of UV absorbers Avobenzone Eusolex 9020 4 Methylbenzylidene camphor Eusolex 6300 Octyl methoxycinnamate Eusolex 2292 Oxybenzone Eusolex 4360 disambig ... more details
Escalol is the trade name of a number of UV absorbers Avobenzone Escalol 517 Oxybenzone Escalol 567 Padimate A Escalol 506 Padimate O Escalol 507 disambig ... more details
Phototendering is the process by which organic fibres and textiles lose strength and flexibility as a result of exposure to sunlight. It is the ultraviolet component of the sun s spectrum which affects fibres, causing chain Chemical decomposition degradation and hence loss of strength. The rate of deterioration is also affected by pigments and dyes present in the textiles. Pigments themselves can also be affected, generally fading after exposure. Great care is needed to preserve museum artefacts from the harmful effects of UV light, which can also be present in fluorescent lamps . Many synthetic polymers are also degraded by UV light, and UV stabilisers are usually added to many thermoplastics . See also polymer degradation textiles Ultraviolet UV degradation UV Stabilizers in plastics External links http www.chemsoc.org chembytes ezine 2001 butler apr01.htm Survival of Old Textiles http www.freepatentsonline.com 4668235.html Patent for Protection of Fibres from Phototendering Category Mechanical failure ... more details
Union UV 1993 1998 X Legislature Dino Vi rin align center Valdotanian Union UV 1998 2002 XI Legislature Roberto Louvin align center Valdotanian Union UV 2002 2003 XI Legislature Carlo Perrin align center Valdotanian Union UV 2003 2004 XII Legislature Luciano Caveri align center Valdotanian Union UV 2004 2008 XII Legislature Augusto Rollandin align center Valdotanian Union UV 2008 ... XIII Legislature ... more details
Repetition date August 2011 Image UV ontsmetting laminaire vloeikast.JPG thumb right A low pressure mercury vapor discharge tube floods the inside of a Fume hood hood with shortwave UV light when not in use ... UVGI is a disinfectant disinfection method that uses ultraviolet UV light at sufficiently short .... UV has been a known mutagen at the cellular level for more than one hundred years. The 1903 Nobel Prize for Medicine was awarded to Niels Finsen for his use of UV against tuberculosis . ref cite web ... of UV irradiation to purify water was a technique invented by Ashok Gadgil . ref http www.lbl.gov Education ELSI sustain main.html ref UVGI utilises short wavelength ultraviolet radiation UV C that is harmful ... that their DNA is disrupted by the UV radiation. This removes their reproductive capabilities and kills them. The wavelength of UV that causes this effect is rare on Earth as Earth s atmosphere its atmosphere blocks it. ref cite web url http news.softpedia.com news UV Radiation What UVA UVB and UVC Rays Are and How They Affect Us 30345.shtml title UV Radiation What UVA, UVB and UVC Rays Are and How ... , as the holding facilities were enclosed and could be circulated to ensure a higher exposure to the UV ... light is electromagnetic radiation with wavelengths shorter than visible light . UV can be separated into various ranges, with short range UV Ultraviolet UVC considered germicidal UV. At certain wavelengths UV is mutagenic to bacteria, viruses and other micro organisms. At a wavelength of 2,537 ... issue 3 ref UV will break the molecular bonds within micro organismal DNA, producing thymine .... It is a process similar to the UV effect of longer wavelengths UVB on humans, such as sunburn or sun glare . Micro organisms have less protection from UV and cannot survive prolonged exposure ... forced air system s to germicidal UV. Exposure comes from germicidal lamp s that emit germicidal UV electromagnetic radiation at the correct wavelength, thus irradiating the environment. The forced ... more details
Unreferenced date December 2009 The colorless carotenoids , phytoene and phytofluene , are natural carotenoid s that lack visible color due to their lower number of conjugated double bond s on the C40 carbon backbone of the molecule . This structure allows them to absorb light in the UVA and UVB range and quench free radical s also formed by Ultraviolet light UV light . Phytoene and phytofluene were initially discovered as a potent and stable substitutes to pigmented carotenoids to protect the skin via mostly topical application . The colorless carotenoids may be beneficial for health protection and nutrition al and beauty applications such as protection against UV and oxidative damage . Several articles summarized their protective activities against Ultraviolet irradiation UV irradiation and free radicals derived from UV, damage to DNA and collagen , anti inflammatory and the ability to reduce pigmentation . All of which lead to reduction in pre mature aging and damaged skin resulting in brighter, younger looking and protected skin. Category Carotenoids ... more details
mediator of a plant s repsonse to UV B in Arabidopsis thaliana containing a mutant this protein. This plant was found to have a hypersensitivity to UV B ref cite pmid 12226503 ref which damages DNA ... of the plant to UV B light whereupon it interacts with chromatin. ref cite pmid 20031919 ref The protein has a beta propeller fold ref name wu ref name pmid22323738 and is dimeric in the absence of UV B light. It contains several tryptophan residues at the dimer interface which absorb light at UV ... ligase . ref cite pmid 21454788 ref In turn, this triggers transcription of proteins responsible for UV protection and repair of UV induced damage ref cite doi 10.1016 j.tplants.2012.01.007 ref References ... 20120209getzoff hires.html title Detailed picture of a UV sensing protein publisher Scripps Research ... more details
File WSO UV Telescope.jpg thumb 400px Model of WSO UV telescope during Space Week in Madrid, May 2011 The World Space Observatory , also known as World Space Observatory Ultraviolet WSO UV , is a proposed space telescope intended for work in the 110 nm to 320 nm wavelength range. The launch is planned for 2015. The observatory The main instrument of the observatory is 1.7 metre Ritchey Chretien telescope. The telescope will be equipped by the following instruments HIRDES High Resolution Double Echelle Spectrograph R 55000 spectroscopy of point sources in the 102 320 nm range Germany LSS Long slit low resolution R 2500 spectroscopy in the 102 320 nm range ISSIS Imaging and Slitless Spectroscopy Instrument for Surveys being developed to carry out UV and optical diffraction limited imaging of astronomical objects. The ISSIS incorporates three channels High Sensitivity Far UV Channel 120 200 nm Channel for Surveys FUV 120 600 nm, optimized for 120 270 nm Channel for Surveys UVO 120 600 nm, optimized for 270 600 nm. Spain Participating nations This international project is led by Russia Roskosmos . At present the international cooperation includes three basic participants Russia will provide the telescope, spacecraft, launch facilities, ground segment Spain ISSIS, ground segment Germany spectrographs . Ukraine and Kazakhstan also participate the project. References The WSO UV web site http www.wso uv.org See also Category Space telescopes Space observatories RosKosmos space observatories es Observatorio Espacial Mundial ru uk ... more details
Optical radiation is part of the electromagnetic spectrum . It is subdivided into ultraviolet radiation UV , the spectrum of light visible for man VIS and infrared radiation IR . It ranges between wavelengths of 100 nm to 1 mm. Effects Optical radiation may produce positive as well as negative effects. It is therefore necessary to arrange for reasonable exposure to optical radiation. Primarily UV radiation, but also IR radiation, may be both beneficial and detrimental for man. The natural source of both types of radiation is sun. Artificial sources of UV radiation are among others UV lamps or emitters as for example in solaria. Artificial IR radiation is generated by devices such as light bulbs or radiant heaters. Excessive exposure to natural or artificial UV radiation means immediate acute and long term chronic damage to the eye and skin. Excess of IR radiation may also cause health detriment. Recent studies have shown that chronic exposure to IR radiation alone or combined with UV radiation may induce skin damage. It is therefore necessary to arrange for reasonable exposure to optical radiation. Specifications The European Union EU has laid down minimum harmonized requirements for the protection of workers against the risks arising from exposure to Artificial Optical Radiation e.g. UVA, laser, etc. in the Directive http eur lex.europa.eu smartapi cgi sga doc?smartapi celexplus prod DocNumber&lg en&type doc Directive&an doc 2006&nu doc 25 2006 25 EC . A Non binding guide to good practice for implementing Directive 2006 25 EC Artificial Optical Radiation is available on this http ec.europa.eu social main.jsp?catId 148&langId en&pubId 5926&type 2&furtherPubs yes page . Category Electromagnetic spectrum Category Electromagnetic radiation ... more details
. Adachi, Kyoko. Sano, Hiroshi. 1992. Isolation and structure of a UV absorbing substance from the marine ... W. Castenholz. 1993. Occurrence of UV Absorbing, Mycosporine Like Compounds among Cyanobacterial ... rez Rezanka T, Temina M, Tolstikov AG, Dembitsky VM, 2004. Natural Microbial UV Radiation Filters ... was done in cyanobacteria living in a high UV radiation environment. ref Garcia Pichel F, Wingard CE, Castenholz RW. 1993. Evidence Regarding the UV Sunscreen Role of a Mycosporine Like Compound in the Cyanobacterium ... among all MAAs is light absorption. All MAAs absorb UV light that can be destructive to biological ... structure. In addition to protecting cells from mutation via UV radiation and free radicals, MAAs are able ... s sunscreens? Natural Product Reports. 159 171. ref The ring structure is thought to absorb UV light .... ref name rez It is this light absorbing property that allows MAAs to protect cells from harmful UV .... Functions Ultraviolet light responses Protection from UV radiation Ultraviolet UV A Subtypes UV A and UV A Subtypes UV B radiation is harmful to living systems. An important tool used to deal with UV ... been implicated in UV radiation protection. The genetic basis for this implication comes from the observed induction of MAA synthesis when organisms are exposed to UV radiation between 280 400nm . Among ... and UV inducible synthesis of photoprotective compounds carotenoids and mycosporines by freshwater ... like amino acids UV protectants or multipurpose secondary metabolites? FEMS Microbiol. Lett 269 1 10. ref When MAAs absorb UV light the energy is dissipated as heat. ref http esraa chemist.blogspot.com 2011 02 01 archive.html ref UV B photoreceptors have been identified in cyanobacteria as the molecules responsible for the UV light induced responses, including synthesis of MAAs. ref Portwich A & Garcia ... supporting the idea that MAAs provide protection from UV light. Mycosporine glycine is a MAA that provides ... Accessory pigments in photosynthesis MAAs are able to absorb UV light . A study published in 1976 ... more details
Unreferenced stub auto yes date December 2009 Excision endonuclease , also known as excinuclease or UV Specific Endonuclease , is a nuclease enzyme which excises a fragment of nucleotides during DNA repair . The excinuclease cuts out a fragment by hydrolyzing two phosphodiester bonds, one on either side of the lesion in the DNA. This process is part of nucleotide excision repair , a mechanism that can fix specific damages to the DNA in the G1 phase of the eukaryotic cell cycle . Such damages can include the thymine dimers created by UV rays. A deficiency of excinuclease occurs in a rare autosomal recessive disease called xeroderma pigmentosum . Diagnosis of this disease is done by measuring the enzyme s level in white blood cells in a blood sample. Symptoms in children include extreme ultraviolet UV sensitivity, excessive freckle freckling , multiple skin cancer s and corneal ulcer ations. Typically, these symptoms are seen during a child s first sun exposure. Citation needed date November 2009 Category DNA repair Enzyme stub ca escinucleasa es escinucleasa ... more details
Valdotanian Union UV 4th Legislature of the Italian Republic 4th Legislature br 1963 1968 Renato Chabod ... 7th Legislature br 1976 1979 Pierre Fosson br Valdotanian Union UV Cesare Dujany br Popular Democrats ... br Valdotanian Union UV Cesare Dujany br Popular Democrats DP 9th Legislature of the Italian Republic 9th Legislature br 1983 1987 Pierre Fosson br Valdotanian Union UV Luciano Caveri br Valdotanian Union UV 10th Legislature of the Italian Republic 10th Legislature br 1987 1992 Cesare Dujany br Autonomists Democrats Progressives ADP Luciano Caveri br Valdotanian Union UV 11th Legislature of the Italian ... Union UV 12th Legislature of the Italian Republic 12th Legislature br 1994 1996 Cesare Dujany br For Aosta Valley PVdA Luciano Caveri br Valdotanian Union UV 13th Legislature of the Italian Republic 13th Legislature br 1996 2001 Guido Dondeynaz br Valdotanian Union UV Ivo Coll br Edelweiss Aosta ... br Valdotanian Union UV Roberto Nicco br Indep. Democrats of the Left DS 15th Legislature of the Italian ... Antonio Fosson br Valdotanian Union UV small Source http www.consiglio.regione.vda.it storia ... more details
quality. UV Inkjet Piezoelectric Ink Jet Piezo inkjet printers whose inks are UV curable Dry when cured with UV light . The resulting prints are waterproof, embossed & vibrant. Any media ... technologies such as Solvent, Aqueous, and UV. External links http www.qualitybanner.com blog ?p 25 ... more details
DUV may refer to one of the following Deep ultraviolet . DUV, Druck und Verlagshaus Frankfurt am Main , the publisher Frankfurter Rundschau . Diffey weighted UV irradiance D V , Dampfkessel berwachungsverein , Steam Boiler Inspectorate Organization in English DUV, Deutsche Ultramarathon Vereinigung e. V. disambig it DUV ... more details
UVM may mean The University of Vermont UV mapping , a 3D modelling process of making a 2D map representing a 3D model In meteorology , upward vertical motion Universidad del Valle de M xico , a private university in Mexico The Universal Verification Methodology , an EDA standard disambig de UVM es UVM fr UVM ... more details
orphan date July 2010 citation style date September 2011 Dicing tape is a backing tape used during wafer dicing , the cutting apart of pieces of semiconductor material following wafer electronics wafer microfabrication . The tape holds the pieces of semiconductor, known as dies, together during the cutting process, mounting them to a thin metal frame. The dies are later removed from the dicing tape further on in the electronics manufacturing process. Dicing tape can be made of PVC , polyolefin , or polyethylene backing material with an adhesive to hold the dies in place. It is available in a variety of thicknesses, from 75 ref http www.semicorp.com products standardDicingTape.html Standard Dicing Tape. Semiconductor Equipment Corp. Accessed 23 July 2010 ref to 150 micrometers, with a variety of adhesive strengths, designed for various chip sizes and materials. UV tapes are dicing tapes in which the adhesive bond is broken by exposure to UV light after dicing, allowing the adhesive to be stronger during cutting while still allowing clean and easy removal. ref http www.semiconductortapes.com products difference2.html UV Tape vs Non UV Tape. Semiconductor Tapes and Materials. Accessed 23 July 2010 ref References reflist Category Semiconductor device fabrication electronics stub ... more details
Multiple issues orphan May 2012 lead too short December 2011 unreferenced December 2011 merge to Polyester date December 2011 Textilene is a synthetic material composed of a mixture of polyester fibre covered with a sheath of PVC, able to withstand compression efforts, rips, atmospheric agents and UV rays. Category Polyesters fr Textilene it Textilene ... more details
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