That portion of the electromagnetic spectrum immediately below the visible range and extending into the x-ray frequencies. The longer wavelengths (near-UV or biotic or vital rays) are necessary for the endogenous synthesis of vitamin D and are also called antirachitic rays; the shorter, ionizing wavelengths (far-UV or abiotic or extravital rays) are viricidal, bactericidal, mutagenic, and carcinogenic and are used as disinfectants.
The use of ultraviolet electromagnetic radiation in the treatment of disease, usually of the skin. This is the part of the sun's spectrum that causes sunburn and tanning. Ultraviolet A, used in PUVA, is closer to visible light and less damaging than Ultraviolet B, which is ionizing.
Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Penetrating, high-energy electromagnetic radiation emitted from atomic nuclei during NUCLEAR DECAY. The range of wavelengths of emitted radiation is between 0.1 - 100 pm which overlaps the shorter, more energetic hard X-RAYS wavelengths. The distinction between gamma rays and X-rays is based on their radiation source.
The effects of ionizing and nonionizing radiation upon living organisms, organs and tissues, and their constituents, and upon physiologic processes. It includes the effect of irradiation on food, drugs, and chemicals.
Photochemotherapy using PSORALENS as the photosensitizing agent and ultraviolet light type A (UVA).
Pads made of various materials used for personal hygiene usually for absorbing URINE or FECES. They can be worn as underpants or pants liners by various age groups, from NEWBORNS to the ELDERLY. Absorbent pads can be made of fluff wood pulp and HYDROGEL absorbent covered with viscose rayon, polyester, polypropylene, or POLYETHYLENE coverstock.
A metallic element with atomic symbol Fe, atomic number 26, and atomic weight 55.85. It is an essential constituent of HEMOGLOBINS; CYTOCHROMES; and IRON-BINDING PROTEINS. It plays a role in cellular redox reactions and in the transport of OXYGEN.
Hard, amorphous, brittle, inorganic, usually transparent, polymerous silicate of basic oxides, usually potassium or sodium. It is used in the form of hard sheets, vessels, tubing, fibers, ceramics, beads, etc.
Exclusive legal rights or privileges applied to inventions, plants, etc.
A metallic element with the atomic symbol V, atomic number 23, and atomic weight 50.94. It is used in the manufacture of vanadium steel. Prolonged exposure can lead to chronic intoxication caused by absorption usually via the lungs.
Isoforms encoded by the WT1 Wilms tumor suppressor gene (GENES, WILMS TUMOR) and produced by alternative splicings. They are zinc finger-containing transcription factors involved in both transactivation and repression, and are critical for normal development and function of the urogenital tract.
Membranous appendage of fish and other aquatic organisms used for locomotion or balance.
Fields representing the joint interplay of electric and magnetic forces.
Characteristics of ELECTRICITY and magnetism such as charged particles and the properties and behavior of charged particles, and other phenomena related to or associated with electromagnetism.
A noninvasive technique that enables direct microscopic examination of the surface and architecture of the SKIN.
Literary and oral genre expressing meaning via symbolism and following formal or informal patterns.
A plant genus of the family Passifloraceae, order Violales, subclass Dilleniidae, class Magnoliopsida. They are vines with ornamental flowers and edible fruit.
The motion of air currents.
Activities performed by humans.
Normal, appropriate sorrowful response to an immediate cause. It is self-limiting and gradually subsides within a reasonable time.
The storing of visual and usually sound signals on discs for later reproduction on a television screen or monitor.
A form of ocular misalignment characterized by an excessive convergence of the visual axes, resulting in a "cross-eye" appearance. An example of this condition occurs when paralysis of the lateral rectus muscle causes an abnormal inward deviation of one eye on attempted gaze.
The transmission and reproduction of transient images of fixed or moving objects. An electronic system of transmitting such images together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound. (From Webster, 3rd ed)
Misalignment of the visual axes of the eyes. In comitant strabismus the degree of ocular misalignment does not vary with the direction of gaze. In noncomitant strabismus the degree of misalignment varies depending on direction of gaze or which eye is fixating on the target. (Miller, Walsh & Hoyt's Clinical Neuro-Ophthalmology, 4th ed, p641)
The interchange of goods or commodities, especially on a large scale, between different countries or between populations within the same country. It includes trade (the buying, selling, or exchanging of commodities, whether wholesale or retail) and business (the purchase and sale of goods to make a profit). (From Random House Unabridged Dictionary, 2d ed, p411, p2005 & p283)
Voluntary or reflex-controlled movements of the eye.
A group of islands in the southwest Pacific. Its capital is Wellington. It was discovered by the Dutch explorer Abel Tasman in 1642 and circumnavigated by Cook in 1769. Colonized in 1840 by the New Zealand Company, it became a British crown colony in 1840 until 1907 when colonial status was terminated. New Zealand is a partly anglicized form of the original Dutch name Nieuw Zeeland, new sea land, possibly with reference to the Dutch province of Zeeland. (From Webster's New Geographical Dictionary, 1988, p842 & Room, Brewer's Dictionary of Names, 1992, p378)
Any of the 23 plates of fibrocartilage found between the bodies of adjacent VERTEBRAE.
The means of moving persons, animals, goods, or materials from one place to another.
A rare metal element with a blue-gray appearance and atomic symbol Ge, atomic number 32, and atomic weight 72.63.
An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.
Areas of attractive or repulsive force surrounding MAGNETS.
The study of MAGNETIC PHENOMENA.
The physical effects involving the presence of electric charges at rest and in motion.
Fields of science encompassing studies and research from the disciplines of PHYSICS; CHEMISTRY; BIOLOGICAL SCIENCES; and MATHEMATICS; that are related to the planet EARTH. Subfields include atmospheric chemistry; CLIMATOLOGY; ENVIRONMENTAL SCIENCES; GEOGRAPHY; GEOLOGY; geophysics; METEOROLOGY; OCEANOGRAPHY; PALEONTOLOGY; mineralogy; and seismology.
The study of natural phenomena by observation, measurement, and experimentation.
The study of those aspects of energy and matter in terms of elementary principles and laws. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.
A short thick vein formed by union of the superior mesenteric vein and the splenic vein.
The study of the characteristics, behavior, and internal structures of the atomic nucleus and its interactions with other nuclei. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The art, technique, or business of producing motion pictures for entertainment, propaganda, or instruction.
The mimicking of the behavior of one individual by another.
Differential and non-random reproduction of different genotypes, operating to alter the gene frequencies within a population.
Stretches of genomic DNA that exist in different multiples between individuals. Many copy number variations have been associated with susceptibility or resistance to disease.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
Activities in which participants learn self-defense mainly through the use of hand-to-hand combat. Judo involves throwing an opponent to the ground while karate (which includes kung fu and tae kwon do) involves kicking and punching an opponent.
A family of winged insects of the suborder HETEROPTERA, called assassin bugs, because most prey on other insects. However one subfamily, TRIATOMINAE, attacks humans and other vertebrates and transmits Chagas disease.
The science of language, including phonetics, phonology, morphology, syntax, semantics, pragmatics, and historical linguistics. (Random House Unabridged Dictionary, 2d ed)
A plant genus of the family OLEACEAE. Members contain suspensaside.
Disruption of structural continuity of the body as a result of the discharge of firearms.
Polyploidy with three sets of chromosomes. Triploidy in humans are 69XXX, 69XXY, and 69XYY. It is associated with HOLOPROSENCEPHALY; ABNORMALITIES, MULTIPLE; PARTIAL HYDATIDIFORM MOLE; and MISCARRAGES.

JNK2 is required for efficient T-cell activation and apoptosis but not for normal lymphocyte development. (1/12422)

BACKGROUND: The Jun N-terminal kinase (JNK) signaling pathway has been implicated in cell proliferation and apoptosis, but its function seems to depend on the cell type and inducing signal. In T cells, JNK has been implicated in both antigen-induced activation and apoptosis. RESULTS: We generated mice lacking the JNK2 isozymes. The mutant mice were healthy and fertile but defective in peripheral T-cell activation induced by antibody to the CD3 component of the T-cell receptor (TCR) complex - proliferation and production of interleukin-2 (IL-2), IL-4 and interferon-gamma (IFN-gamma) were reduced. The proliferation defect was restored by exogenous IL-2. B-cell activation was normal in the absence of JNK2. Activation-induced peripheral T-cell apoptosis was comparable between mutant and wild-type mice, but immature (CD4(+) CD8(+)) thymocytes lacking JNK2 were resistant to apoptosis induced by administration of anti-CD3 antibody in vivo. The lack of JNK2 also resulted in partial resistance of thymocytes to anti-CD3 antibody in vitro, but had little or no effect on apoptosis induced by anti-Fas antibody, dexamethasone or ultraviolet-C (UVC) radiation. CONCLUSIONS: JNK2 is essential for efficient activation of peripheral T cells but not B cells. Peripheral T-cell activation is probably required indirectly for induction of thymocyte apoptosis resulting from administration of anti-CD3 antibody in vivo. JNK2 functions in a cell-type-specific and stimulus-dependent manner, being required for apoptosis of immature thymocytes induced by anti-CD3 antibody but not for apoptosis induced by anti-Fas antibody, UVC or dexamethasone. JNK2 is not required for activation-induced cell death of mature T cells.  (+info)

Activation of telomerase and its association with G1-phase of the cell cycle during UVB-induced skin tumorigenesis in SKH-1 hairless mouse. (2/12422)

Telomerase is a ribonucleoprotein enzyme that adds hexanucleotide repeats TTAGGG to the ends of chromosomes. Telomerase activation is known to play a crucial role in cell-immortalization and carcinogenesis. Telomerase is shown to have a correlation with cell cycle progression, which is controlled by the regulation of cyclins, cyclin dependent kinases (cdks) and cyclin dependent kinase inhibitors (cdkis). Abnormal expression of these regulatory molecules may cause alterations in cell cycle with uncontrolled cell growth, a universal feature of neoplasia. Skin cancer is the most prevalent form of cancer in humans and the solar UV radiation is its major cause. Here, we investigated modulation in telomerase activity and protein expression of cell cycle regulatory molecules during the development of UVB-induced tumors in SKH-1 hairless mice. The mice were exposed to 180 mjoules/cm2 UVB radiation, thrice weekly for 24 weeks. The animals were sacrificed at 4 week intervals and the studies were performed in epidermis. Telomerase activity was barely detectable in the epidermis of non-irradiated mouse. UVB exposure resulted in a progressive increase in telomerase activity starting from the 4th week of exposure. The increased telomerase activity either persisted or further increased with the increased exposure. In papillomas and carcinomas the enzyme activity was comparable and was 45-fold higher than in the epidermis of control mice. Western blot analysis showed an upregulation in the protein expression of cyclin D1 and cyclin E and their regulatory subunits cdk4 and cdk2 during the course of UVB exposure and in papillomas and carcinomas. The protein expression of cdk6 and ckis viz. p16/Ink4A, p21/Waf1 and p27/Kip1 did not show any significant change in UVB exposed skin, but significant upregulation was observed both in papillomas and carcinomas. The results suggest that telomerase activation may be involved in UVB-induced tumorigenesis in mouse skin and that increased telomerase activity may be associated with G1 phase of the cell cycle.  (+info)

Activation of c-Jun N-terminal kinase 1 by UV irradiation is inhibited by wortmannin without affecting c-iun expression. (3/12422)

Activation of c-Jun N-terminal kinases (JNKs)/stress-activated protein kinases is an early response of cells upon exposure to DNA-damaging agents. JNK-mediated phosphorylation of c-Jun is currently understood to stimulate the transactivating potency of AP-1 (e.g., c-Jun/c-Fos; c-Jun/ATF-2), thereby increasing the expression of AP-1 target genes. Here we show that stimulation of JNK1 activity is not a general early response of cells exposed to genotoxic agents. Treatment of NIH 3T3 cells with UV light (UV-C) as well as with methyl methanesulfonate (MMS) caused activation of JNK1 and an increase in c-Jun protein and AP-1 binding activity, whereas antineoplastic drugs such as mafosfamide, mitomycin C, N-hydroxyethyl-N-chloroethylnitrosourea, and treosulfan did not elicit this response. The phosphatidylinositol 3-kinase inhibitor wortmannin specifically blocked the UV-stimulated activation of JNK1 but did not affect UV-driven activation of extracellular regulated kinase 2 (ERK2). To investigate the significance of JNK1 for transactivation of c-jun, we analyzed the effect of UV irradiation on c-jun expression under conditions of wortmannin-mediated inhibition of UV-induced stimulation of JNK1. Neither the UV-induced increase in c-jun mRNA, c-Jun protein, and AP-1 binding nor the activation of the collagenase and c-jun promoters was affected by wortmannin. In contrast, the mitogen-activated protein kinase/ERK kinase inhibitor PD98056, which blocked ERK2 but not JNK1 activation by UV irradiation, impaired UV-driven c-Jun protein induction and AP-1 binding. Based on the data, we suggest that JNK1 stimulation is not essential for transactivation of c-jun after UV exposure, whereas activation of ERK2 is required for UV-induced signaling leading to elevated c-jun expression.  (+info)

The Jun kinase 2 isoform is preferentially required for epidermal growth factor-induced transformation of human A549 lung carcinoma cells. (4/12422)

We have previously found that epidermal growth factor (EGF) mediates growth through the Jun N-terminal kinase/stress-activated kinase (JNK/SAPK) pathway in A549 human lung carcinoma cells. As observed here, EGF treatment also greatly enhances the tumorigenicity of A549 cells, suggesting an important role for JNK in cancer cell growth (F. Bost, R. McKay, N. Dean, and D. Mercola, J. Biol. Chem. 272:33422-33429, 1997). Several isoforms families of JNK, JNK1, JNK2, and JNK3, have been isolated; they arise from alternative splicing of three different genes and have distinct substrate binding properties. Here we have used specific phosphorothioate oligonucleotides targeted against the two major isoforms, JNK1 and JNK2, to discriminate their roles in EGF-induced transformation. Multiple antisense sequences have been screened, and two high-affinity and specific candidates have been identified. Antisense JNK1 eliminated steady-state mRNA and JNK1 protein expression with a 50% effective concentration (EC50) of <0.1 microM but did not alter JNK2 mRNA or protein levels. Conversely, antisense JNK2 specifically eliminated JNK2 steady-state mRNA and protein expression with an EC50 of 0.1 microM. Antisense JNK1 and antisense JNK2 inhibited by 40 and 70%, respectively, EGF-induced total JNK activity, whereas sense and scrambled-sequence control oligonucleotides had no effect. The elimination of mRNA, protein, and JNK activities lasted 48 and 72 h following a single Lipofectin treatment with antisense JNK1 and JNK2, respectively, indicating sufficient duration for examining the impact of specific elimination on the phenotype. Direct proliferation assays demonstrated that antisense JNK2 inhibited EGF-induced doubling of growth as well as the combination of active antisense oligonucleotides did. EGF treatment also induced colony formation in soft agar. This effect was completely inhibited by antisense JNK2 and combined-antisense treatment but not altered by antisense JNK1 alone. These results show that EGF doubles the proliferation (growth in soft agar as well as tumorigenicity in athymic mice) of A549 lung carcinoma cells and that the JNK2 isoform but not JNK1 is utilized for mediating the effects of EGF. This study represents the first demonstration of a cellular phenotype regulated by a JNK isoform family, JNK2.  (+info)

Postnatal growth failure, short life span, and early onset of cellular senescence and subsequent immortalization in mice lacking the xeroderma pigmentosum group G gene. (5/12422)

The xeroderma pigmentosum group G (XP-G) gene (XPG) encodes a structure-specific DNA endonuclease that functions in nucleotide excision repair (NER). XP-G patients show various symptoms, ranging from mild cutaneous abnormalities to severe dermatological impairments. In some cases, patients exhibit growth failure and life-shortening and neurological dysfunctions, which are characteristics of Cockayne syndrome (CS). The known XPG protein function as the 3' nuclease in NER, however, cannot explain the development of CS in certain XP-G patients. To gain an insight into the functions of the XPG protein, we have generated and examined mice lacking xpg (the mouse counterpart of the human XPG gene) alleles. The xpg-deficient mice exhibited postnatal growth failure and underwent premature death. Since XPA-deficient mice, which are totally defective in NER, do not show such symptoms, our data indicate that XPG performs an additional function(s) besides its role in NER. Our in vitro studies showed that primary embryonic fibroblasts isolated from the xpg-deficient mice underwent premature senescence and exhibited the early onset of immortalization and accumulation of p53.  (+info)

The C-terminal region of hPrp8 interacts with the conserved GU dinucleotide at the 5' splice site. (6/12422)

A U5 snRNP protein, hPrp8, forms a UV-induced crosslink with the 5' splice site (5'SS) RNA within splicing complex B assembled in trans- as well as in cis-splicing reactions. Both yeast and human Prp8 interact with the 5'SS, branch site, polypyrimidine tract, and 3'SS during splicing. To begin to define functional domains in Prp8 we have mapped the site of the 5'SS crosslink within the hPrp8 protein. Immunoprecipitation analysis limited the site of crosslink to the C-terminal 5060-kDa segment of hPrp8. In addition, size comparison of the crosslink-containing peptides generated with different proteolytic reagents with the pattern of fragments predicted from the hPrp8 sequence allowed for mapping of the crosslink to a stretch of five amino acids in the C-terminal portion of hPrp8 (positions 1894-1898). The site of the 5'SS:hPrp8 crosslink falls within a segment spanning the previously defined polypyrimidine tract recognition domain in yPrp8, suggesting that an overlapping region of Prp8 may be involved both in the 5'SS and polypyrimidine tract recognition events. In the context of other known interactions of Prp8, these results suggest that this protein may participate in formation of the catalytic center of the spliceosome.  (+info)

Photocrosslinking of 4-thio uracil-containing RNAs supports a side-by-side arrangement of domains 5 and 6 of a group II intron. (7/12422)

Previous studies suggested that domains 5 and 6 (D5 and D6) of group II introns act together in splicing and that the two helical structures probably do not interact by helix stacking. Here, we characterized the major Mg2+ ion- and salt-dependent, long-wave UV light-induced, intramolecular crosslinks formed in 4-thiouridine-containing D56 RNA from intron 5gamma (aI5gamma) of the COXI gene of yeast mtDNA. Four major crosslinks were mapped and found to result from covalent bonds between nucleotides separating D5 from D6 [called J(56)] and residues of D6 near and including the branch nucleotide. These findings are extended by results of similar experiments using 4-thioU containing D56 RNAs from a mutant allele of aI5gamma and from the group IIA intron, aI1. Trans-splicing experiments show that the crosslinked wild-type aI5gamma D56 RNAs are active for both splicing reactions, including some first-step branching. An RNA containing the 3-nt J(56) sequence and D6 of aI5gamma yields one main crosslink that is identical to the most minor of the crosslinks obtained with D56 RNA, but in this case in a cation-independent fashion. We conclude that the interaction between J(56) and D6 is influenced by charge repulsion between the D5 and D6 helix backbones and that high concentrations of cations allow the helices to approach closely under self-splicing conditions. The interaction between J(56) and D6 appears to be a significant factor establishing a side-by-side (i.e., not stacked) orientation of the helices of the two domains.  (+info)

UV irradiation of polycyclic aromatic hydrocarbons in ices: production of alcohols, quinones, and ethers. (8/12422)

Polycyclic aromatic hydrocarbons (PAHs) in water ice were exposed to ultraviolet (UV) radiation under astrophysical conditions, and the products were analyzed by infrared spectroscopy and mass spectrometry. Peripheral carbon atoms were oxidized, producing aromatic alcohols, ketones, and ethers, and reduced, producing partially hydrogenated aromatic hydrocarbons, molecules that account for the interstellar 3.4-micrometer emission feature. These classes of compounds are all present in carbonaceous meteorites. Hydrogen and deuterium atoms exchange readily between the PAHs and the ice, which may explain the deuterium enrichments found in certain meteoritic molecules. This work has important implications for extraterrestrial organics in biogenesis.  (+info)

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The effect of daily ingestion of collagen peptide on the skin damage induced by repeated UV-B irradiation was examined. Ingestion of collagen peptide (0.2 g/kg/d) suppressed UV-B-induced decreases in skin hydration, hyperplasia of the epidermis, and decreases in soluble type I collagen. These results suggest that collagen peptide is beneficial as a dietary supplement to suppress UV-B-induced skin damage and photoaging.
DNA damage can cause cell death unless it is either repaired or tolerated. The precise contributions of repair and tolerance mechanisms to cell survival have not been previously evaluated. Here we have analyzed the cell killing effect of the two major UV light-induced DNA lesions, cyclobutane pyrimidine dimers (CPDs) and 6-4 pyrimidine-pyrimidone photoproducts (6-4PPs), in nucleotide excision repair-deficient human cells by expressing pliotolyase(s) for light-dependent photorepair of either or both lesions. Immediate repair of the less abundant 6-4PPs enhances the survival rate to a similar extent as the immediate repair of CPDs, indicating that a single 6-4PP lesion is severalfold more toxic than a CPD in the cells. Because UV light-induced DNA damage is not repaired at all in nucleotide excision repair-deficient cells, proliferation of these cells after UV light irradiation must be achieved by tolerance of the damage at replication. We found that RNA interference designed to suppress ...
Ultraviolet rays are electromagnetic rays that are invisible to the naked eye. Though long-term exposure to ultraviolet rays can...
I could not find anything related to using ultraviolet rays for energy in the ? areas I looked at. Ultraviolet rays are present 24hrs a day, rain snow or shine, has anyone come up with a way to use this abundent energy ...
BACKGROUND: Pathogen contamination, causing transfusion-transmitted diseases, is an ongoing concern in transfusion of cellular blood products. In this explorative study, the pathogen-inactivating capacity of UVC irradiation in platelet (PLT) concentrates was investigated. The dose dependencies of inactivation of several viruses and bacteria were compared with the effect on PLT quality.. STUDY DESIGN AND METHODS: The potential of UVC irradiation was studied with a range of lipid-enveloped (LE) and non-lipid-enveloped viruses (NLE) and bacteria. LE viruses were bovine viral diarrhea virus (BVDV), human immunodeficiency virus (HIV), pseudorabies virus (PRV), transmissible gastroenteritis virus (TGEV), and vesicular stomatitis virus (VSV). NLE viruses were canine parvovirus (CPV) and simian virus 40 (SV40). Bacteria were Staphylococcus epidermidis, Staphylococcus aureus, Escherichia coli, and Bacillus cereus. After spiking and irradiation, samples were tested for residual infectivity and reduction ...
Author: Arts, Michael T. et al.; Genre: Journal Article; Published in Print: 1997-12; Title: Effects of enhanced ultraviolet-B radiation on the production of lipid, polysaccharide and protein in three freshwater algal species.
As an attractive dielectric material, polyimide has been widely used in the field of electronics, aerospace, and automobiles due to its useful mechanical properties and good chemical resistance. UV irradiation was considered to be the main factor related to the damage and failure of polyimide. Here the effects of UV irradiation on the surface morphology and microscale mechanical properties of polyimide films are characterized by atomic force microscopy (AFM). The surface roughness of the UV-irradiated samples developed and the mechanical properties degraded with the radiation dose increased. For comparison, uniaxial tensile test was performed to obtain the macroscale Youngs modulus of polyimide film. The UV-irradiated damaging depth was simulated with finite element method (FEM).
Detail záznamu - Hyaluronan minimizes effects of UV irradiation on human keratinocytes - Detail záznamu - Knihovna Akademie věd České republiky
Behind the shades. For personal and professional reasons, Ive been spending a lot of time in Florida lately. And its an interesting place.. The fashions you see can leave you speechless. And the unfashions are even worse. The plaid pants…bright gold jogging suits…and those huge wraparound sunglasses!. Where are these people shopping?!. Turns out the people donning those curious sunglasses may not be fashionistas but they are pretty smart about protecting their eyes.. Those mega-wraparound sunglasses block nearly 100 percent of ultraviolet rays. Anything less than that increases risk of photokeratitis, which is sunburn of the cornea.. Ouch! And not only is it painful, but it can also damage and kill superficial corneal cells. And that sets up the potential for serious, long-term damage.. Of course, you dont HAVE to wear those oversized sunglasses to protect your eyes. But when you understand the consequences of UV damage, you may actually want to!. Ray of hope. Photokeratitis is an ...
There are many things we consider invasive for our skin: chemical products, pollution, stress and even aging are on our list when it comes to things which will badly affect the texture and color of the skin. However, what many people tend to ignore when it comes to their skin is the harmful effect of the sun.. Sun is one of the worst enemies the human skin could have. First of all because there are very few ways in which we can stay out of its way. Everywhere we go we have to meet the dangerous sun rays, especially during the hot days of summer. Because we got so used with it, sun no longer is seen as a threat. Moreover, there are people who benevolently expose their skin to the powerful sun rays without any protection, thus damaging their skin willingly.. But why is sun a threat to human skin after all? Well, the ultraviolet rays which come from the sun are the ones which affect the skin. People with lighter color of skin feel the solar attacks more acutely than people with darker types of ...
the 3, photo sources does not have the mercury, in the light beam not to contain the ultraviolet ray. The LED illumination is the solid illumination photo source,LED lamps the green bosom, is suitable specially for the perfume shop, the slum joint, the museum, the art museum and so on specialized place, may satisfy its demonstration commodity to the illumination special request; the 4, state system illuminations, the earthquake resistance performance is good, reliable reliable; the 5, energy conservation, the economy, exempts the maintenance; 6, dynamic color controls, light and shade adjustable, three primary colors LED illumination combinations may use PWM to realize the color change; 7, Shenzhen LED the display monitor LED illumination has the very strong illumination directivity, the luminous flux use factor is high, and the volume is small, easy lamps and lanterns outward appearance design and light intensity distributed control; 8th, the LED illumination may use the direct-current low ...
Semantic Scholar extracted view of [Additive effect of ultraviolet rays and triethylene glycol in air disinfection]. by L B Grun
Because Ultraviolet Rays have higher wavelengths than the visual light spectrum. Does that mean that Einsteins wrong, or did I miss something and am ...
The incidence of BCCs increases with age and with no sex predilection.10 However, in our study there were more women than men in all age categories except for those younger than 30 years (one young man affected and no women). The higher presence of women in our study is only partly explained by the demographics in our area.. The spectral sensitivity of the polysulphone film is restricted to wavelengths below 330 nm and consequently measures mainly erythema-producing UVB. The action spectrum for development of BCC is not known. However, the values at the different sites indicate the UVR exposure at that location and there is no reason to believe that different UV wavelengths should be differently distributed.. Sliney11 discussed the difficulties in estimating ocular exposure to UVR. Clearness of the sky, time of the day, time of the year, latitude, altitude, ground reflectance are some of the variables that influence ambient UVR. The fraction of ambient UVR that affects the skin of the eyelids ...
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Browse all auto repair and maintenance topics related to Ultraviolet Rays. Ask a question online now and get answers from expert, top-rated car mechanics.
Ultraviolet ray absorbent colored glass for buildings and vehicles, which consists essentially of from 65 to 75 wt % of SiO2, from 0.1 to 5.0 wt % of Al2 O3 , from 10 to 18 wt % of Na2 O, from 0 to 5 wt % of K2 O, from 5 to 15 wt % of CaO, from 1 to 6 wt % of MgO, from 0.05 to 1.0 wt % of SO3, from 0.08 to 0.20 wt % of vanadium as calculated as V2 O5, from 0.36 to 0.65 wt % of MnO2, from 0 to 0.0020 wt % of CoO and from 0.06 to 0.18 wt % of iron as calculated as Fe2 O3, wherein from 0 to 10 wt % of the total iron content is FeO.
TY - JOUR. T1 - The proteasome regulates the UV-induced activation of the AP-1-like transcription factor Gcn4. AU - Stitzel, M. L.. AU - Durso, R.. AU - Reese, J. C.. PY - 2001/1/15. Y1 - 2001/1/15. N2 - The proteasome is well known for its regulation of the cell cycle and degradation of mis-folded proteins, yet many of its functions are still unknown. We show that RPN11, a gene encoding a subunit of the regulatory cap of the proteasome, is required for UV-stimulated activation of Gcn4p target genes, but is dispensable for their activation by the general control pathway. We provide evidence that RPN11 functions downstream of RAS2, and show that mutation of two additional proteasome subunits results in identical phenotypes. Our analysis defines a novel function of the proteasome: regulation of the RAS- and AP-1 transcription factor-dependent UV resistance pathway.. AB - The proteasome is well known for its regulation of the cell cycle and degradation of mis-folded proteins, yet many of its ...
UV radiation causes several forms of DNA damage; the most prominent of these are cyclobutane pyrimidine dimers (CPDs) and 6-4 pyrimidine-photoproducts (6-4 PPs). Nucleotide excision repair (NER) is a repair process that repairs these DNA lesions. Defects in the NER pathway lead to cancer-related diseases such as xeroderma pigmentosum (XP) that is caused by a defect in the XPA to XPG genes that are involved in the NER pathway. To investigate protein recruitment to chromatin after DNA damage, SV40 minichromosomes containing pyrimidine-rich DNA were established to create a tool with high sensitivity to UV for in vivo studies. Using this tool these findings suggest that p54nrb, which exhibits multi-functional characteristics in a variety of cellular processes, including DNA and RNA binding, nuclear RNA processing and regulation of transcription, is a novel protein putatively involved in UV DNA damage response. The objective of this study was to gain a better insight into the mechanism(s) by which ...
Age spots and blemishes are a group of skin-aging pigmented skin diseases that usually appear in faces chronically exposed to ultraviolet rays. Blemishes appear as marks after sudden exposure to the sun, or as dermatitis, folliculitis and external injuries. Age spots, which appear as a phenomenon of skin-aging problems, look uneven mantises or appear as brown, flat, and round specks. They are caused by excessively thickly growing epidermis and deposits of pigment. The ultraviolet rays begin in spring, become strongest in summer and weaken in winter. As a result, freckles and blemishes also seriously appear in spring and summer and may be eased in winter. In addition to getting treatment, it is important to prevent the skin from becoming dark by blocking ultraviolet rays. ...
(1) x 62mm UV Protection Filter- UV-protection filter for Canon and Nikon lenses will provide basic reduction of ultraviolet light, eliminating the hazy, foggy,
Understanding what a UVB Light does and knowing the value of Having the Best UVB Light for Turtles, is the most essential part of being a Turtle Keeper.
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Kripke, M L. and Fidler, I J., Enhanced experimental metastasis of ultraviolet light-induced fibrosarcomas in ultraviolet light-irradiated syngeneic mice. (1980). Subject Strain Bibliography 1980. 2588 ...
Few studies in China have examined personal ultraviolet radiation (UVR) exposure using polysulfone dosimetry. In this study, 93 mother and adolescent child pairs (N = 186) from two locations in China, one rural (higher latitude) and one urban (lower latitude), completed 3 days of personal UVR dosimetry and a sun/clothing diary, as part of a larger pilot study. The average daily ambient UVR in each location as measured by dosimetry was 20.24 Minimal Erythemal Doses (MED) in the rural location and 20.53 MED in the urban location. Rural mothers had more average daily time outdoors than urban mothers (5.5 h, compared with 1.5 h, in urban mothers) and a much higher daily average personal UVR exposure (4.50 MED, compared with 0.78 MED in urban mothers). Amongst adolescents, rural males had the highest average daily personal UVR exposure, followed by rural females, urban females and urban males (average 2.16, 1.05, 0.81, and 0.48 MED, respectively). Although based on small numbers, our findings show the
Proficiency in the Kemetic language isnt needed to comprehend the message being displayed in the above illustration, it is quite obvious. Clearly, these ancient Africans are telling us here that they understood that the same relationship that the plants have with our Sun is equally shared with us. We cannot separate ourselves from nature, for nature is not just our environment, we are nature itself. If this divine agreement, understanding, and obligation are violated the consequences will be severe, like what we are facing today due to our anti-Sun ways of life. Some people are adversely affected by ultraviolet (UV) rays, while others need them to obtain optimal health. Being affected by something doesnt automatically make it bad for everyone else; neither does it make it bad in general. The human biology is a microcosmic Sun; Melanin (eumelanin) is a physical embodiment of natural light and all of its components, including the ultraviolet range. Contrary to common beliefs, ultraviolet ...
The influence of enhanced UV-B radiation (280-320 nm) on wheat ( Triticum aestivumcv. Florida 301) yield, and disease incidence and severity was investigated for two growing seasons under field...
Precis of the Global Panel Solar Simulator Market 2017 Research Report Explore Professional Survey, Market Professional, and more!. The market research report provides a detailed analysis and data about the Panel Solar Simulator market statistical study, the key players, growth dynamics, and geographical analysis. The report provides the information concerning the factors that impel the growth of the Panel Solar Simulator global industry. The Panel Solar Simulator market constitute of the leading groups which play a vital role in the product sales, manufacturing, production, distribution of the products in order to meet the supply and demand chain. A detailed study of the global market share of the past and the future along with the predictable forecast trends is also mentioned in the present report.. ...
Elevated levels of UV-B radiation will have many direct and indirect effects on plants (Fig. 3). Even present-day levels of UV-B radiation affect the growth and development of plants. The direct effects of UV-B radiation on plant cells are mostly damaging, because UV-B photons have enough energy to create lesions in important UV-B-absorbing biomolecules such as nucleic acids and proteins. It is known that the photoproducts of DNA formed by UV-B radiation, cyclobutane pyrimidine dimers and pyrimidine (6-4) pyrimidone and (6-4) photoproducts, are all toxic and mutagenic. In addition, the altered DNA and RNA structures may interfere with transcription and replication; and therefore protein synthesis may be slowed down during UV-B stress. In order to avoid the effects of DNA damage, plants have efficient systems for DNA repair, including photoreactivation and excision repair, which are involved in restoring the structure of genetic material during exposure to UV-B radiation. However, the indirect ...
The aim of the present work was to evaluate the antioxidant and photoprotective effect of blanch water (BW), a byproduct of the almond processing industry. The polyphenolic content of a BW extract, the level of proanthocyanidins and the vanillin index determination were determined. The antioxidant activity and the radical scavenging activity of the BW were evaluated by a range of in vitro tests. The in vivo photoprotective effect was investigated using a formulation containing 2% of the BW extract on skin erythema induced by acute UV-B exposure in twelve volunteers. Results confirmed the presence of added-value antioxidant compounds in the industrial BW extract, and the most representative compounds were naringenin-7-O-glucoside and kaempferol-7-O-rutinoside. The proanthocyanidin content was 71.84 ± 5.21 cyanidin equivalents/g of BW extract. The good antiradical activity of the BW extract was demonstrated in both the DPPH• test and in the Reducing Power test. The percentage inhibition of erythema
Ultraviolet (UV) irradiation kills microorganisms mainly by damaging the microorganisms nucleic acids, but also by affecting their enzymes, amino acids, and the membrane phospholipids. UV wavelength in the range of 200 to 295 nm is the most effective in breaking cellular DNA, thereby destroying the organism. Indeed most UV room disinfection devices use UV-C irradiation which has a characteristic wavelength of 200-270 nm. The efficacy of UV irradiation devices depends on many parameters, such as the organic load present, dose, exposure time, distance of the microorganisms from the device, the device intensity, lamp placement and direct line between the device and the location of the microorganisms. It has been found that double stranded viruses were more resistant than single DNA viruses, and that bacterial and fungal spores are highly resistant to UV inactivation, and photoreactivation has been demonstrated (3). In general, microbes are better inactivated by the UV irradiation when in the air ...
Required for DNA repair. Binds to DDB1 to form the UV-damaged DNA-binding protein complex (the UV-DDB complex). The UV-DDB complex may recognize UV-induced DNA damage and recruit proteins of the nucleotide excision repair pathway (the NER pathway) to initiate DNA repair. The UV-DDB complex preferentially binds to cyclobutane pyrimidine dimers (CPD), 6-4 photoproducts (6-4 PP), apurinic sites and short mismatches. Also appears to function as the substrate recognition module for the DCX (DDB1-CUL4-X-box) E3 ubiquitin-protein ligase complex DDB1-CUL4-ROC1 (also known as CUL4-DDB-ROC1 and CUL4-DDB-RBX1). The DDB1-CUL4-ROC1 complex may ubiquitinate histone H2A, histone H3 and histone H4 at sites of UV-induced DNA damage. The ubiquitination of histones may facilitate their removal from the nucleosome and promote subsequent DNA repair. The DDB1-CUL4-ROC1 complex also ubiquitinates XPC, which may enhance DNA-binding by XPC and promote NER. Isoform D1 and isoform D2 inhibit UV-damaged DNA repair ...
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In the stratosphere, ozone is created primarily by ultraviolet radiation. When high-energy ultraviolet rays strike ordinary oxygen molecules (O2), they split the molecule into two single oxygen atoms, known as atomic oxygen. A freed oxygen atom then combines with another oxygen molecule to form a molecule of ozone. There is so much oxygen in our atmosphere, that these high-energy ultraviolet rays are completely absorbed in the stratosphere.
TY - JOUR. T1 - Deoxyribonucleic Acid Excision Repair in Chromatin after Ultraviolet Irradiation of Human Fibroblasts in Culture. AU - Friedberg, E. C.. PY - 1979/1/1. Y1 - 1979/1/1. N2 - We have exposed confluent normal human fibroblasts to ultraviolet (UV) fluences of 5, 14, or 40 J/m2 and monitored the specific activity of post-UV repair synthesis in chromatin with [3H]thymidine pulses. We have shown that under conditions where no semiconservative deoxyribonucleic acid (DNA) synthesis is detectable, the specific activity of repair label in micrococcal nuclease resistant (core particle) DNA is about one-fifth that in bulk DNA at all three UV fluences. On the other hand, the distribution of thymine-containing pyrimidine dimers in bulk and nuclease-resistant regions measured either immediately after irradiation or at later times showed no significant differences; preferential labeling of linker (nuclease-sensitive) DNA during repair synthesis is thus apparently not due to a predominance of ...
Collagen is the main protein of connective tissue. It has great tensile strength, and is the main component of ligaments and tendons. It is responsible for
The insulin-like growth factor-1 (IGF-1) and its downstream effector Akt have been documented as survival factors in response to a variety of stress signals. In this study, we show that IGF-1 activates p21 protein expression in a p53-dependent manner. Inhibition of PI-3 kinase or ectopic expression of a dominant-negative Akt blocks the effect of IGF-1 on the upregulation of p21 expression. In addition, IGF-1 prevents the UV irradiation-mediated suppression of p21 and MDM2 expression. Furthermore, p21 is important for IGF-1-mediated cell survival upon UV irradiation. Taken together, these data indicate that IGF-1 may activate p21 in executing its survival function upon genotoxic insults.. ...
Lysates of HeLa cells treated with UV or untreated cells for use as controls in western blotting to analyze UV-induced DNA damage and/or apoptosis.
Involvement of MIF in Basement Membrane Damage in Chronically UVB-Exposed Skin in Mice. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
4. Portability. Going duck hunting with heavy gear might be a turn off for most. If you use a heavy net, it might prove difficult to use-- but you probably already know this. Youd want to use netting thats easy to handle.. Camo netting is light and portable. You can fold and pack it in your backpack, for easy carriage. Any support could easily hold camo netting, for whatever purpose you desire. Quality camo netting is resistant to different conditions such as water, so you dont have to worry about water absorption, which could make it heavy and hard to carry.. 5. Durability. If you choose good quality camo material, it could serve you for several seasons. Some are, in fact, reinforced with anti-tear material that prevents them from ripping. If your camo net is ultraviolet- or UV-treated, you can be sure it wont fade out easily.. UV-treated nets also have the advantage of preventing the suns glare. Remember, if you create a glare, your prey will be out paddling away in no time. Camo netting ...
4. Portability. Going duck hunting with heavy gear might be a turn off for most. If you use a heavy net, it might prove difficult to use-- but you probably already know this. Youd want to use netting thats easy to handle.. Camo netting is light and portable. You can fold and pack it in your backpack, for easy carriage. Any support could easily hold camo netting, for whatever purpose you desire. Quality camo netting is resistant to different conditions such as water, so you dont have to worry about water absorption, which could make it heavy and hard to carry.. 5. Durability. If you choose good quality camo material, it could serve you for several seasons. Some are, in fact, reinforced with anti-tear material that prevents them from ripping. If your camo net is ultraviolet- or UV-treated, you can be sure it wont fade out easily.. UV-treated nets also have the advantage of preventing the suns glare. Remember, if you create a glare, your prey will be out paddling away in no time. Camo netting ...
UV system : The Ultraviolet rays are a strong disinfectant. Ultraviolet rays damage the cells of microorganisms by destroying them instantly.. Chloroxym : Sodium hypochlorite generator. The only requirements for our generator to work are a supply of salt, water and electricity. [see the website ] ...
TY - JOUR. T1 - Cyclobutane pyrimidine dimer (CPD) photolyase repairs ultraviolet-B-induced CPDs in rice chloroplast and mitochondrial DNA. AU - Takahashi, Masaaki. AU - Teranishi, Mika. AU - Ishida, Hiroyuki. AU - Kawasaki, Junji. AU - Takeuchi, Atsuko. AU - Yamaya, Tomoyuki. AU - Watanabe, Masao. AU - Makino, Amane. AU - Hidema, Jun. N1 - Copyright: Copyright 2011 Elsevier B.V., All rights reserved.. PY - 2011/5. Y1 - 2011/5. N2 - Plants use sunlight as energy for photosynthesis; however, plant DNA is exposed to the harmful effects of ultraviolet-B (UV-B) radiation (280-320 nm) in the process. UV-B radiation damages nuclear, chloroplast and mitochondrial DNA by the formation of cyclobutane pyrimidine dimers (CPDs), which are the primary UV-B-induced DNA lesions, and are a principal cause of UV-B-induced growth inhibition in plants. Repair of CPDs is therefore essential for plant survival while exposed to UV-B-containing sunlight. Nuclear repair of the UV-B-induced CPDs involves the ...
epub Stratospheric Ozone Reduction, Solar Ultraviolet Radiation and Plant Life only to be the connection and get parents of Astro Fibonacci planets. technology not to delight how to start grains regression for past payment. astrological Motion proves a small astro for rates and topics.
Dr. Elizabeth Cahoon presents an overview on solar ultraviolet radiation (UVR) dosimetry and epidemiology and its public health importance. (Radiation Epidemiology and Dosimetry Course 2019)
Sensitivity of human skin to ultraviolet radiation (UVR) varies dramatically depending on its colour and also varies within each colour band. Yet, public health policies regarding UVR exposure of human skin are mostly based on our knowledge of the UVR effects in only one skin type class: fair-skinned White Caucasians. This report gives a review of the different approaches to predicting and measuring UVR sensitivity using the Minimal Erythema Dose (MED). The MED is defined as the smallest amount of radiation that causes a noticeable reddening of the skin in an individual after a single exposure (evaluated 1 day post-exposure). Ultraviolet radiation is used to diagnose and treat skin conditions in patients with a broad range of complexions (skin colour) from very fair to very dark. Occupational UVR exposures also concern workers representing all types of skin. A sizable proportion of the population in Western countries uses UVR-emitting indoor tanning equipment. Environmental UVR can induce damage ...
Menetrez, M. Y., Foarde, K., Dean, T. R., & Betancourt, D. A. (2010). The effectiveness of UV irradiation on vegetative bacteria and fungi surface contamination. Chemical Engineering Journal, 157(2-3), 443-450 ...
0035]Although the coating agent for the water pressure transfer film according to the invention comprises the ultraviolet ray hardening resin composite, the photo-polymerization monomer of the ultraviolet ray hardening resin composite has a solvent power to an ink of the print pattern as well as that to the photo-polymerization pre-polymer, a higher hardenability, a good adhesion to ABS resins, PC materials, etc., which are base materials onto which the print pattern is to be transferred under water pressure, a lower contractility when hardened and a good smoothness and also has a good transparency maintained. Thus, the dried and cured print pattern of the water pressure transfer film can be positively recovered by the proper viscosity and ink solubility of the ultraviolet ray hardening resin composite and since the ultraviolet ray hardening resin composite permeates and penetrates the whole thickness of the print pattern from the surface on the side of application of the coating agent to the ...
Read Cellular analysis of UV-B-induced barley root subapical swelling, Russian Journal of Plant Physiology on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
10. Kim ST, Koh JW. Mechanisms of apoptosis on human lens epithelium after ultraviolet light exposure. Korean journal of ophthalmology : KJO 2011; 25:196-201 ...
Exposure to solar ultraviolet B radiation during the summer months is the main source of vitamin D (VD) for people living in northern latitudes. The aim of this study was to determine whether artificial narrowband ultraviolet B (NB-UVB) whole-body exposures could maintain VD levels in winter. The intervention group received 2 standard erythema doses (SEDs) of NB-UVB exposures every second week from October 2013 to April 2014. In October 2013 serum 25-hydroxyvitamin D concentrations were 78.3 nmol/l in the intervention group (n = 16) and 76.8 nmol/l in the control group (n = 18). By April 2014 the concentrations had increased by 11.7 nmol/l (p = 0.029) in the intervention group and decreased by 11.1 nmol/l (p = 0.022) in the control group. The baseline VD concentration showed a negative correlation (p = 0.012) with body mass index (BMI). In conclusion, a suberythemal NB-UVB dose of 2 SED every second week maintains and even increases serum VD concentrations during the winter. A high BMI seems to ...
UV radiation has been shown to play a role in the initiation of human cutaneous melanoma, but its role in the development of malignant melanoma to the metastatic state is not very well defined. Although previous studies have concentrated on the effect of UV-B on the host immune response, the effect of UV-B on the tumor cells was not elucidated. Here we show that UV-B can induce interleukin 8 (IL-8) mRNA and protein secretion in human cutaneous melanoma with negligible expression of IL-8. UV-B-induced IL-8 was constitutively expressed 60 days after irradiation in tumors implanted in mice. Induction of IL-8 was UV-B dose dependent and blocked by cyclohexamide, indicating that de novo protein synthesis is required for its expression. The UV-irradiated cells demonstrated enhanced tumorigenicity and metastatic potential in nude mice. The increase in tumorigenicity and metastatic ability could be explained by the increase in Mr 72,000 type IV collagenase activity and angiogenesis attributed to the ...
TY - JOUR. T1 - Both near ultraviolet radiation and the oxidizing agent hydrogen peroxide induce a 32-kDa stress protein in normal human skin fibroblasts. AU - Keyse, Stephen M.. AU - Tyrrell, Rex M.. PY - 1987/10/25. Y1 - 1987/10/25. N2 - We have analyzed the pattern of protein synthesis in solar near ultraviolet (334 nm, 365 nm) and near visible (405 nm) irradiated normal human skin fibroblasts. Two hours after irradiation we find that one major stress protein of approximately 32 kDa is induced in irradiated cells. This protein is not induced by ultraviolet radiation at wavelengths shorter than 334 nm and is not inducible by heat shock treatment of these cells. Although sodium arsenite, diamide, and menadione all induced a 32-kDa protein, they also induced the major heat shock proteins. In contrast, the oxidizing agent, hydrogen peroxide, induced the low molecular weight stress protein without causing induction of the major heat shock proteins. A comparison of the 32-kDa proteins induced by ...
The ultraviolet (UV) radiative transfer problem in the martian atmosphere is dominated by multiple scattering of photons with the micron-sized aerosols that are suspended in the thin atmosphere. By implementing a multiple stream, vertical fine layering description of the radiative transfer equation that is able to cope with the strong vertical variations of the atmospheric properties, we estimate the resulting upwelling and downwelling UV irradiances under different martian scenarios in equatorial and close to equatorial latitudes. We include the latest SPICAM measurements on the aerosol vertical profile (distribution of Angstrom exponent and aerosol loading), scattering properties (asymmetry parameter and single scattering albedo), ground albedo, and O3 content as well as MER long-term monitorization of ground-based aerosol optical depth. We show that due to the fact that the distributions of absorbing (ozone) and scattering (aerosols) agents are vertically coincident, the probability to absorb ...
This gene encodes a single-strand specific DNA endonuclease that makes the 3 incision in DNA excision repair following UV-induced damage. The protein may also function in other cellular processes, including RNA polymerase II transcription, and transcription-coupled DNA repair. Mutations in this gene cause xeroderma pigmentosum complementation group G (XP-G), which is also referred to as xeroderma pigmentosum VII (XP7), a skin disorder characterized by hypersensitivity to UV light and increased susceptibility for skin cancer development following UV exposure. Some patients also develop Cockayne syndrome, which is characterized by severe growth defects, mental retardation, and cachexia. Read-through transcription exists between this gene and the neighboring upstream BIVM (basic, immunoglobulin-like variable motif containing) gene. [provided by RefSeq, Feb 2011 ...
Overexposure to UVB radiation not only can cause sunburn but also some forms of skin cancer. However, the degree of redness and eye irritation (which are largely not caused by UVA) do not predict the long-term effects of UV, although they do mirror the direct damage of DNA by ultraviolet.[51] All bands of UV radiation damage collagen fibers and accelerate aging of the skin. Both UVA and UVB destroy vitamin A in skin, which may cause further damage.[52] UVB radiation can cause direct DNA damage.[53] This cancer connection is one reason for concern about ozone depletion and the ozone hole. The most deadly form of skin cancer, malignant melanoma, is mostly caused by DNA damage independent from UVA radiation. This can be seen from the absence of a direct UV signature mutation in 92% of all melanoma.[54] Occasional overexposure and sunburn are probably greater risk factors for melanoma than long-term moderate exposure.[55] UVC is the highest-energy, most-dangerous type of ultraviolet radiation, and ...
TY - JOUR. T1 - Inhibition of erbB receptor family members protects HaCaT keratinocytes from ultraviolet-B-induced apoptosis. AU - Lewis, Davina A.. AU - Zweig, Bryan. AU - Hurwitz, Steven A.. AU - Spandau, Dan F.. N1 - Funding Information: The HaCaT cell line was kindly provided by Dr. Petra Boukamp. We would like to thank Drs Jeffrey Travers and Michael Southall for their helpful discussions and insightful suggestions on this project. This work was supported in part by a grant from the National Institutes of Health (R01ES11155 to DFS).. PY - 2003/3/1. Y1 - 2003/3/1. N2 - In the human epidermis, the cells most at risk for the development of cancer due to sunlight exposure are the keratinocytes. In animal models, ultraviolet-B is a complete carcinogen, capable of inducing and promoting the development of malignant cells. A key element of ultraviolet-B-induced carcinogenesis is the ability of ultraviolet-B to induce the expression of a number of cellular proteins and activate growth factor ...
FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a single-strand specific DNA endonuclease that makes the 3' incision in DNA excision repair following UV-induced damage. The protein may also function in other cellular processes, including RNA polymerase II transcription, and transcription-coupled DNA repair. Mutations in this gene cause xeroderma pigmentosum complementation group G (XP-G), which is also referred to as xeroderma pigmentosum VII (XP7), a skin disorder characterized by hypersensitivity to UV light and increased susceptibility for skin cancer development following UV exposure. Some patients also develop Cockayne syndrome, which is characterized by severe growth defects, mental retardation, and cachexia. Read-through transcription exists between this gene and the neighboring upstream BIVM (basic, immunoglobulin-like variable motif containing) gene. [provided by RefSeq, Feb 2011 ...
UV-B radiation has been widely documented as a stressor for plants that can cause decreased biomass, reduction in photosynthesis, and oxidative stress. Trigonelline is a secondary metabolite that is biosynthesized in some plants in response to abiotic stress such as UV-B irradiation. The objectives of this study were to examine biochemical stress responses for peanut plants (Arachis hypogaea L.) of four different genotypes (Spanish, Valencia, Virginia, and Runner) after exposure at various lengths to UV-B radiation and to examine the alteration of trigonelline biosynthesis due to the age of the plants. Peanut plants from the genotypes were exposed to UV-B radiation at three exposure times (60, 120, and 180 min); plants from two growth stages, the flowering (R1) and early maturity (R7), were used. Significant positive correlations (rs 0.29-0.74, P≤0.05) were found for trigonelline concentrations and UV-B exposure times. With longer exposure times of 180 min for plants at R7, trigonelline biosynthesis
Objectives Preventable risk factors for prostate cancer are poorly understood; sun exposure is a possible protective factor. The goal of this study was to investigate prostate cancer risk in outdoor workers, a population with high sun exposure. Methods Prostate cancer cases and controls from a large study (conducted between 1994 and 1997) were used for this analysis. A job exposure matrix ( JEM) was used to assign solar ultraviolet radiation (UVR) at work as moderate (2 to ,6 hours outside/day) or high (≥6 hours). Average daily satellite UV-B measures were linked to the latitude/longitude of the residences of each participant. Several other exposure metrics were also examined, including ever/never exposed and standard erythemal dose by years (SED×years). Logistic regression was used to evaluate the association between solar UVR exposure and the odds of prostate cancer. Results A total of 1638 cases and 1697 controls were included. Men of Indian and Asian descent had reduced odds of prostate ...
Allen, D., S Nogues and N Baker (1998). Review article. Ozone depletion and increased UV-B radiation: is there a real threat to photosynthesis? Journal of Experimental Botany 49(328): 1775- 1788.. This critical review of recent literature questions earlier predictions that photosynthetic productivity of higher plants is vulnerable to increased ultraviolet-B (UV-B) radiation as a result of stratospheric ozone (O3) depletion. Direct UV-B-induced inhibition of photosynthetic competence is observed only at high UV-B irradiances and primarily involves the loss of soluble Calvin cycle enzymes and adaxial stomatal closure in amphistomatous plants. However, even under these extreme UV-B exposures, acclimation (e.g. induction of UV-B absorbing flavonoids) can protect the photosynthetic processes. In plants irradiated with UV-B throughout development a reduction in productivity is usually associated with a reduced ability to intercept light (i.e. smaller leaf area) and not an inhibition of ...
Ultraviolet rays cause wood to turn gray and become susceptible to water penetration and decay. DEFY Extreme Wood Stain effectively protects the wood from the harmful effects of the sun and from graying by using state-of-the-art nano-technology.. Extreme Wood Stain contains zinc oxide particles that reflect the damaging ultraviolet rays from the sun. When you reduce the size of these zinc particles down to the nano level, they become invisible to the naked eye. These nano-particles are distributed at a rate of over 30 trillion per square inch of surface area to provide protection from the sun, much like sun blockers and sunscreen lotions.. This will not only help to prolong the graying, but, as the nano-particles are highly resistant to mold and mildew, will also enable you to retain the natural color.. This VOC-compliant, semi-transparent stain provides the maximum UV protection available, adding a semi-transparent tint to your wood. Extreme Wood Stain is available in six semi-transparent ...
Sunburns hurt, and the damage they inflict on your skin is long lasting and dangerous. The redness of a sunburn is caused by clogged and swollen capillaries that supply blood to the skin. Severe burns, caused by the ultraviolet rays in sunlight, damage blood vessels and destroy elastic fibers in the skin, causing it to sag and wrinkle. Excessive sun exposure can also lead to skin cancer, the most common of all cancers.. Prevention is best. Perform outdoor activities before 10:00 A.M. or after 2:00 P.M., when the ultraviolet rays are less intense. Remember to wear a sunscreen with an SPF (sun protection factor) of 15 or higher.. The sun is bad for your skin - or is it? With all the warnings were given about sun exposure, skin cancer, and aging, youd think that God was playing a cruel trick on us by placing that large, warm, inviting ball in the sky. Actually, sunlight - in moderate, regular doses - is good and even mandatory for good health and healthy skin.. We need sunlight for several ...
Purpose: UVB radiation is linked to various ocular pathologies including photokeratitis and pterygium. However the response mechanisms of the limbal epithelial stem cell (LESC) compartment are unclear. Here, the effect of UVB irradiation on the LESC phenotype and the subsequent role of the LESC niche in cornea (lymph)angiogenesis were investigated.. Methods: Primary human limbal epithelial cells (HLE) and fibroblasts (HLF) have been irradiated with 0.02 J/cm2 of UVB. Cell proliferation was tested by using the Alamar Blue assay. The putative LESC phenotype was assessed using the markers P63a, ABCG2, integrin b1 and CK3 (immunophenotyping and QPCR) as well as a colony forming efficiency (CFE) assay. An HLE-HLF co-culture model mimicking the LESC niche was used to compare the ability of irradiated and non-irradiated HLF to support HLE putative LESC phenotype. The levels of angiogenesis-related cytokine and growth factors in conditioned media of irradiated and non-irradiated cells were assessed in a ...
TY - JOUR. T1 - p51/p63 inhibits ultraviolet B-induced apoptosis via Akt activation. AU - Ogawa, E.. AU - Okuyama, R.. AU - Ikawa, S.. AU - Nagoshi, H.. AU - Egawa, T.. AU - Kurihara, A.. AU - Yabuki, M.. AU - Tagami, H.. AU - Obinata, M.. AU - Aiba, S.. N1 - Funding Information: This study was partly supported by a Grant in Aid from the Ministry of Education, Culture, Sports, Science, and Technology of the Japanese government.. PY - 2008/1/31. Y1 - 2008/1/31. N2 - The epidermis must be protected against excess apoptotic cell death in response to ultraviolet-B (UV-B) irradiation. p53 is known to be critical for this protection. Although the p53 family member ΔNp51B/ΔNp63α (an N terminal-deleted form of p51/p63) is abundantly expressed in keratinocytes, its contribution to UV-B-dependent apoptosis is largely unknown. We found that, after a transient increase, ΔNp51B is downregulated in UV-B-irradiated keratinocytes undergoing apoptosis, whereas p53 is upregulated with delayed kinetics. ...
Responses of beech seedlings to supplemental UV-B radiation were investigated during three consecutive seasons, in three repeated experiments. Our attention was paid on the alteration of the photosynthetic pigment composition - especially on the xanthophyll cycle pigments - chlorophyll fluorescence parameters, furthermore the accumulation of UV-B absorbing compounds in leaves, the specific leaf mass and leaf water content. The enhanced UV-B radiation generally affected significantly neither photochemical efficiency of PSII, nor photosynthetic pigment composition. UV-B radiation induced some protective mechanisms, thus VAZ-pool increased in beech leaves in every experiment, parallel with the enhancement of non-photochemical quenching. Amount of UV-B absorbing compounds in leaves increased under enhanced UV-B, but no significant changes were observed in the specific leaf mass. Sensitivity of plants to UV-B is largely influenced by other environmental factors and experimental conditions.. ...
If theres one thing every skincare expert can agree on, its the importance of slapping on some SPF before you head outside (or even walk by a window). Now, its easier than ever to protect your skin from harmful ultraviolet rays thanks to a relatively new product: oral sunscreen. Oral sunscreens, which typically come in pill form, arent meant to be a complete substitute for the topical version, but they do make a nice addition to your routine. We repeat: DO NOT USE THESE INSTEAD OF TOPICAL SUNSCREEN.. Oral sunscreen agents are typically antioxidants called polypodium leucotomos, said board-certified dermatologist and ethnic skin expert Dr. William Kwan. They may be helpful by increasing the time it takes for a person to burn when exposed to ultraviolet rays.. Dr. Carolyn Jacob, of Chicago Dermatology, is in complete agreement with Dr. Kwan, telling us, Studies have shown that they can reduce sunburn cells (or the capacity for the sun to damage the skin cells).. Curious? Weve rounded up ...
Ultraviolet (UV) light is a type of electromagnetic radiation. UV light has a shorter wavelength than visible light. Purple and violet light have shorter wavelengths than other colors of light, and ultraviolet has even shorter waves than violet does; so ultraviolet is sort of purpler-than-purple light or beyond violet light. Ultraviolet radiation lies between visible light and X-rays on the electromagnetic spectrum. UV light has wavelengths between about 380 and 10 nanometers. The wavelength of violet light is around 400 nanometers (or 4,000 ). Ultraviolet radiation oscillates at rates between about 800 terahertz (THz or 1012 hertz) and 30,000 THz.. The ultraviolet spectrum is sometimes subdivided into the near UV (380 to 200 nanometer wavelengths) and extreme UV (200 to 10 nm wavelengths). Normal air is largely opaque to UV with wavelengths shorter than 200 nm (the extreme UV range); oxygen absorbs light in that part of the UV spectrum.. In terms of impact on the environment and human ...
Water purification through the use of ultraviolet rays is effectively and rapidly accomplished without the use of heat or chemicals. Special germicidal ultraviolet lamps are utilized to produce short wave radiation lethal to bacteria, viruses, and other microorganism present in common water. Ultraviolet energy at 2,537 angstroms (a measure of wavelength) is required for complete destruction of some microorganisms. The rays created by these lamps are shorter in wavelength than the shortest ultraviolet rays that penetrate the earths atmosphere from the sun. This unique and rapid method of water purification is often used in hospitals, laboratories and veterinaries. Pharmaceutical manufacturers, food processors and bottlers use germicidal lamps to prevent product contamination and, in some instances, for the cold sterilization of the finished product. For commercial sprouting, ultraviolet water purifiers are best utilized in treating incoming water or for water.. ...
Sunscreen is essential to prevent sunburns and skin cancer, but do consumers know how well the solution is really protecting them? Consumer Reports put several sunscreens to the test.
Background The causative link between UV exposure and melanoma development is well known however the mechanistic relationship remains incompletely DCHS2 characterised. genome scanning (Global Genome Restoration; GGR). Current literature suggests NER is definitely deficient in melanoma however the cause of this remains unfamiliar; and whether reduced NER activity in response to UVA may be involved in melanoma development remains uncharacterised. In this study we targeted to determine if melanoma cells show reduced levels of NER activity in response to UVA. Methods Melanocyte and melanoma cell lines were UVA-irradiated and DNA damage levels assessed by immunodetection of Cyclobutane Pyrimidine Dimer (CPD) and (6-4) Photoproduct [(6-4)PP] lesions. Manifestation of NER pathway parts and p53 following UVA treatment was quantified by qPCR and western blot. Results UVA did not induce detectable induction of (6-4)PP lesions consistent with earlier studies. Restoration of CPDs induced by UVA was ...
Unlike traditional disinfection methods (i.e. Chlorination), ultraviolet disinfection sterilizers impart no residual chemicals into your drinking water. The most effective bacteria removal process available today is to use ultraviolet light (UV) disinfection to clean your water. In addition to bacteria removal - E.coli, coliform, virus, algae,mold and others - the Excalibur Water Systems ultraviolet sterilizers are effective against protozoan such as Cryptosporidiumand Giardia Lamblia. Ultraviolet effectively destroys these harmful elements. It is a proven fact that ultraviolet rays destroy the carcinogenic micro-organisms in seconds,which prevents these harmful elements from further multiplying. The result is the most simple, cost effective way of treating your water!. ...
Chlorpropamide, an oral hypoglycemic agent, was tested for effects on excision repair and postreplication repair of ultraviolet (UV) damage of DNA in CHO-K1 cells. The technique used to measure excision repair involved isopycnic centrifugation of density- and isotopically-labeled DNA. Alkaline sucro …
Eyes can also be damaged by UV radiation. Damage includes degenerative changes, cataracts and pterygia.. Cataracts cloud the lens of the eye and are one of the most common types of eye damage in Australia, mostly due to sun exposure. Untreated cataracts can lead to blindness.. Choose sunglasses that wrap around the eyes and dont let light in around the frames, especially at the sides, and make sure the frames fit close to the face.. Sunglasses are given an Eye Protection Factor (EPF), which is a guide to how much UV protection they provide. The EFP is rated on a scale from one to 10. Sunglasses labelled EPF 10 provide almost 100 per cent UV protection. Sunglasses sold in Australia must meet the Australian Standard AS/NZS 1067:2003.. All sunglasses must have a protection category label. Look for category two, three or four and/or a lens description that states good UV protection. Category zero and one are fashion glasses and provide only some UV protection. Polarised lenses reduce ...
Ultraviolet (UV) light is a type of electromagnetic radiation. UV light has a shorter wavelength than visible light. Purple and violet light have shorter wavelengths than other colors of light, and ultraviolet has even shorter waves than violet does; so ultraviolet is sort of purpler-than-purple light or beyond violet light. Ultraviolet radiation lies between visible light and X-rays on the electromagnetic spectrum. UV light has wavelengths between about 380 and 10 nanometers. The wavelength of violet light is around 400 nanometers (or 4,000 ). Ultraviolet radiation oscillates at rates between about 800 terahertz (THz or 1012 hertz) and 30,000 THz.. The ultraviolet spectrum is sometimes subdivided into the near UV (380 to 200 nanometer wavelengths) and extreme UV (200 to 10 nm wavelengths). Normal air is largely opaque to UV with wavelengths shorter than 200 nm (the extreme UV range); oxygen absorbs light in that part of the UV spectrum.. In terms of impact on the environment and human ...
TY - JOUR. T1 - Inhibition of mTORC2 enhances UVB-induced apoptosis in keratinocytes through a mechanism dependent on the FOXO3a transcriptional target NOXA but independent of TRAIL. AU - Feehan, Robert P.. AU - Nelson, Amanda M.. AU - Shantz, Lisa M.. PY - 2018/12. Y1 - 2018/12. N2 - The primary cause of non-melanoma skin cancer (NMSC) is ultraviolet B (UVB) radiation. We have shown previously that mTORC2 inhibition sensitizes keratinocytes to UVB-induced apoptosis mediated by the transcription factor FOXO3a. FOXO3a is a key regulator of apoptosis and a tumor suppressor in several cancer types. Activation of FOXO3a promotes apoptosis through the coordinated expression of a variety of target genes, including TRAIL and NOXA. We hypothesized that in the setting of mTORC2 inhibition, the UVB-induced expression of these factors would lead to apoptosis in a FOXO3a-dependent manner. Using spontaneously immortalized human keratinocytes (HaCaT cells), we observed that both TRAIL and NOXA expression ...
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TY - JOUR. T1 - Ratio images and ultraviolet C excitation in autofluorescence imaging of neoplasms of the human colon. AU - Renkoski, Timothy E.. AU - Banerjee, Bhaskar. AU - Graves, Logan R.. AU - Rial, Nathaniel S.. AU - Reid, Sirandon A.H.. AU - Tsikitis, Vassiliki Liana. AU - Nfonsam, Valentine N.. AU - Tiwari, Piyush. AU - Gavini, Hemanth. AU - Utzinger, Urs. N1 - Funding Information: We would like to thank Dr. Judith Pugh for useful discussions of observed tissue histology, Dr. Ronguang Liang for his input in device development, and Brenda Baggett for assistance with the image analysis. Financial support for this research was provided by the ARCS Foundation, the Marshall Foundation, the Department of Medicine at the University of Arizona, and the Technology and Research Initiative Fund. Hardware for this instrument was supported in part by NIH, R01CA098341.. PY - 2013. Y1 - 2013. N2 - The accepted screening technique for colon cancer is white light endoscopy. While most abnormal growths ...
The physiological mechanisms controlling plant responses to dynamic changes in ambient solar ultraviolet (UV) radiation are not fully understood: this information is important to further comprehend plant adaptation to their natural habitats. We used the fluorimeter Dualex to estimate in vivo the epidermal flavonoid contents by measuring epidermal UV absorbance (A375) in Betula pendula Roth (silver birch) leaves of different ages under altered UV. Seedlings were grown in a greenhouse for 15 days without UV and transferred outdoors under three UV treatments (UV‐0, UV‐A and UV‐A+B) created by three types of plastic film. After 7 and 13 days, Dualex measurements were taken at adaxial and abaxial epidermis of the first three leaves (L1, L2 and L3) of the seedlings. After 14 days, some of the seedlings were reciprocally swapped amongst the treatments to study the accumulation of epidermal flavonoids in the youngest unfolded leaves (L3) during leaf expansion under changing solar UV environments. ...
Dear Customer, We are sorry to hear that. The photochromic lens color density changes depending on the amount of ultraviolet rays as well as the temperature. If your lenses are struck by ultraviolet rays contained in sunlight, their color will become darker. For more info about this type of lens color, you may check it here. No worries, we offer a 30-day return&exchange in which unsatisfied glasses can be exchanged or refunded within 30 days of receiving. Only shipping fees will apply. Allow us to further check on this and our CSR will reach out to you via email (within 24 hours during weekdays and 48 hours when weekends). Please check your inbox or spam mail. Thank you so much, and stay safe ...
In addition to giving your eyes full UV protection, sunglasses can be customised according to your vision prescription, the activities you do or the sports you play. Read more about specialised tints, mirror coatings, polarisation filters, and all the options available to individualise your sunglasses for optimum vision.
Phys.org internet news portal provides the latest news on science including: Physics, Space Science, Earth Science, Health and Medicine
CHRISTUS St. Vincent is one step closer to winning the war against hospital-acquired infection thanks in part to two new state-of-the-art UV-C disinfection devices UV-C light (short wavelength ultraviolet light) disinfection is the latest technology to be used to combat the most challenging microbes in hospitals nationwide. After...
Every spring for the past two decades, depletion of stratospheric ozone has caused increases in ultraviolet B radiation (UVB, 280-320 nm) reaching Antarctic terrestrial and aquatic habitats. Research efforts to evaluate the impact of this phenomenon have focused on phytoplankton under the assumption that ecosystem effects will most likely originate through reductions in primary productivity; however, phytoplankton do not represent the only significant component in ecosystem response to elevated UVB. Antarctic bacterioplankton are adversely affected by UVB exposure; and invertebrates and fish, particularly early developmental stages that reside in the plankton, are sensitive to UVB. There is little information available on UV responses of larger Antarctic marine animals (e.g., birds, seals and whales). Understanding the balance between direct biological damage and species-specific potentials for UV tolerance (protection and recovery) relative to trophic dynamics and biogeochemical cycling is a ...
MCC is a potential tumor suppressor gene, which is silenced by promoter hypermethylation in a subset of colorectal cancers. However, its functions have remained poorly understood. In the present study, we describe a novel function of MCC in the DNA damage response. Several novel phosphorylation sites were identified by mass spectrometry, including 2 highly conserved ATM/ATR consensus sites at serine 118 and serine 120. In addition, exposure to ultraviolet radiation (UV), but not phleomycin, caused PI3K-dependent phosphorylation of MCC and its nuclear localization. Re-expression of MCC in HCT15 colorectal cancer cells led to a G2/M arrest, and MCC knockdown impaired the induction of a G2/M arrest following UV radiation. Finally, mutation of S118/120 to alanine did not affect MCC nuclear shuttling following UV but did impair MCC G2/M checkpoint activity. Thus, these results suggest that MCC is a novel target of the DNA damage checkpoint and that MCC is required for the complete cell cycle arrest in the G2
The biochemical processes of DNA repair, replication and recombination compete for the same substrate, the DNA molecule. This competition is natural, as each process requires the same template. In order to resolve possible conflicts between these processes, when they take place on a particular stretch of DNA, certain crosstalk is expected. The complexity is additionally increased by the existence of another DNA dependent process, which occurs in all phases of the cell cycle: transcription.. This thesis aims to investigate the link between transcription inhibition and homologous recombination, especially in the context of UV-induced DNA damage. The results show that the transcription inhibitor 5,6-dichloro-1-beta-D-ribofuranosylbenzimidazole (DRB) induces homologous recombination. The DNA damage caused by UVC irradiation is repaired mainly via nucleotide excision repair, however, it is also known to trigger recombinational repair. In the presence of UV-induced damage, transcription inhibition by ...
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This makes it possible to focus X-rays. Attwood, D (1999). Soft X-Rays and Extreme Ultraviolet Radiation. Cambridge University ... Total external reflection is a phenomenon traditionally involving X-rays, but in principle any type of electromagnetic or other ... See, for example, NASA X-ray Telescopes at the Wayback Machine (archived 2016-12-13) v t e. ... in X-rays, the refractive index is frequently slightly less than 1, and therefore total external reflection can happen at a ...
Attwood, David (1999). Soft X-Rays and Extreme Ultraviolet Radiation. Cambridge University Press Press. ISBN 9781139164429. ... He is the author of a reference book on soft X-rays and extreme ultraviolet radiation. David Attwood received his Ph.D. in ... Chao, Weilun; Harteneck, Bruce D.; Liddle, J. Alexander; Anderson, Erik H.; Attwood, David T. (2005). "Soft X-ray microscopy at ... Attwood, D.; Halbach, K.; Kim, K.-J. (1985). "Tunable Coherent X-rays". Science. 228 (4705): 1265-1272. doi:10.1126/science. ...
Attwood, David (1999). Soft X-rays and extreme ultraviolet radiation: principles and applications. p. 60. ISBN 978-0-521-02997- ... For X-ray and extreme ultraviolet radiation the complex refractive index deviates only slightly from unity and usually has a ... "X-Ray Interactions With Matter". The Center for X-Ray Optics. Archived from the original on 2011-08-27. Retrieved 2011-08-30.. ... is the X-ray wavelength, and n. e. {\displaystyle n_{e}}. is the electron density. One may assume the electron density is ...
"Ultraviolet Light, UV Rays, What is Ultraviolet, UV Light Bulbs, Fly Trap". Pestproducts.com. Archived from the original on 8 ... "tithonic rays"[7][8]). The terms chemical and heat rays were eventually dropped in favour of ultraviolet and infrared radiation ... Ultraviolet rays are invisible to most humans: the lens in a human eye ordinarily filters out UVB frequencies or higher, and ... Solar ultraviolet[edit]. Very hot objects emit UV radiation (see black-body radiation). The Sun emits ultraviolet radiation at ...
This aromatic chemical absorbs ultraviolet rays thereby preventing sunburn. However, its chemical structure and behaviour is ...
... it is inert under shortwave ultraviolet and X-rays. Turquoise is insoluble in all but heated hydrochloric acid. Its streak is a ... X-ray diffraction testing shows its crystal system to be triclinic. With lower hardness comes lower specific gravity (2.60-2.90 ... Under longwave ultraviolet light, turquoise may occasionally fluoresce green, yellow or bright blue; ...
Furthermore, inadequate clothing could increase exposure to ultraviolet rays; aggravate allergies and skin conditions; and ...
Loeb, J. (1914-11-06). "Activation of the Unfertilized Egg by Ultra-Violet Rays". Science. 40 (1036): 680-681. Bibcode:1914Sci ... Newport: Ray Westlake Military Books. pp. 19, 49. ISBN 1-871167-23-X. "Klubbfakta" (in Norwegian). Rakkestad IF. Archived from ... Newport: Ray Westlake Military Books. p. 165. ISBN 1-871167-23-X. "Manitoba's Municipal History: Municipal Amalgamations (2015 ... Born: Rogelio Julio Frigerio, Argentine economist, noted proponent of developmentalism, in Buenos Aires (d. 2006); Ray Walston ...
She is the co-author of a book on soft X-rays and extreme ultraviolet radiation. Sakdinawat worked as a research scientist in ... Attwood, David; Sakdinawat, Anne (16 February 2017). X-Rays and Extreme Ultraviolet Radiation: Principles and Applications. ... She joined SLAC National Accelerator Laboratory in 2012 and formed the NanoX group for x-ray optics. The research focuses on ... SLAC Researcher Receives DOE 'Early Career' Grant to Support X-ray Optics and Imaging David Attwood - UC Berkeley Attwood, ...
"Activation of the Unfertilized Egg by Ultra-Violet Rays". Science. 40 (1036): 680-681. Bibcode:1914Sci....40..680L. doi:10.1126 ...
X-Ray and Extreme Ultraviolet Optics. 2515: 182. doi:10.1117/12.212587. Boerner, P.; Martinez-Galarce, D. S.; Bay, T. J.; ... Ray H. O'Neal, Dr. Craig E. DeForest, Dr. Charles C. Kankelborg, Dr. Hakeem M. Oluseyi, Dr. Dennis S. Martinez-Galarce, and Dr ... Bibcode:2002AAS...201.8305B. Walker, A.B.C.; Lindblom, J. F.; Barbee, T. W.; Hoover, R. B. (1988). "Soft X-ray Images of the ... Multilayer and Grazing Incidence X-Ray/EUV Optics. 1546: 175. Bibcode:1992SPIE.1546..175H. doi:10.1117/12.51232. Walker, A.B.C ...
Acting as a sunscreen, it provides protection against ultraviolet rays. The American Academy of Dermatology recommends keeping ...
This allows harmful ultraviolet rays to reach the earth's surface. This can lead to skin cancer, eye disease and can even cause ... Ultraviolet light will release free electrons from material, thereby creating free radicals, which break up VOCs and NOx gases ... does not usually come from coal but from vehicular and industrial emissions that are acted on in the atmosphere by ultraviolet ...
They are particularly useful in protecting against ultraviolet rays (UV). The style of a sun hat can range from small to large ...
For X-ray and extreme ultraviolet radiation the complex refractive index deviates only slightly from unity and usually has a ... ISBN 978-0-321-18878-6. Attwood, David (1999). Soft X-rays and extreme ultraviolet radiation: principles and applications. p. ... and for X-rays. In the X-ray regime the refractive indices are lower than but very close to 1 (exceptions close to some ... "X-Ray Interactions With Matter". The Center for X-Ray Optics. Archived from the original on 2011-08-27. Retrieved 2011-08-30. ...
... moreover these glasses become dichroic and fluorescent under ultraviolet rays. Uranyl hydroxide is teratogenic and radioactive ...
Young's eyes were permanently damaged by the ultraviolet rays used in the experiments conducted at Howard for Just. In the fall ... L. V. Heilbrunn & R. A. Young (1930). "The action of ultra-violet rays on Arbacia egg protoplasm". Physiological Zoology. 3 (3 ... Young, Roger Arliner (1940). The indirect effects of roentgen rays on certain marine eggs. Thesis (Ph.D.)--Graduate School of ... CS1 maint: discouraged parameter (link) "About the Fellowship". RAY Conservation Fellows. Retrieved February 17, 2018. CS1 ...
Mudpods have sensitive backs that can sense the ultraviolet rays. The Hysteria's protection is the water. However, the flare ... Such intense ultraviolet radiation is deadly to all carbon-based life forms as it breaks down the atomic bonds formed by ... The Gulphogs have adapted by having an ultraviolet light sensitive eye on top of their heads. Stinger Fans fold up to protect ...
In some cases, an Ultraviolet copy will be included in place of a DVD. Digital copy Blu-ray Disc DVD Ultraviolet. ... The formats are Blu-ray Disc, DVD, and a digital copy. ...
"We Are Your Friends (Blu-ray+Ultraviolet)". Blockbuster. Archived from the original on March 16, 2016. Retrieved January 27, ... The Blu-ray was only released in region B (UK, Europe, Oceania, Middle East, Africa) on December 17, 2015. We Are Your Friends ... himself Dillon Francis as himself Alesso as himself DallasK as himself Them Jeans as himself Zach Firtel as DJ Sweet Baby Ray's ...
Loeb, J (1914), "ACTIVATION OF THE UNFERTILIZED EGG BY ULTRA-VIOLET RAYS.", Science (published Nov 6, 1914), 40 (1036), pp. 680 ...
Reprinted in Stoletow, M.A. (1888). "On a kind of electric current produced by ultra-violet rays". Philosophical Magazine. ... Stoletow, A. (1888). "Sur une sorte de courants electriques provoques par les rayons ultraviolets". Comptes Rendus. CVI: 1149 ...
During the 1920s, he published his research on the effect of ultraviolet rays on viruses in medical journals. He was a head ... "The Resistance of Different Concentrations of a Bacteriophage of Ultraviolet Rays". Journal of Infectious Diseases 40 (1927). ... The Walls of Jericho (1928) The Conjure Man Dies: A Mystery Tale of Dark Harlem (1932) "Action of Ultraviolet Light upon ... with an X-ray laboratory of his own, in New York. Fisher started his professional writing career by contributing to his ...
The "chemical rays" found by him were afterwards called ultraviolet radiation. Some of Ritter's researches were acknowledged as ... "Ultraviolet Waves". Archived from the original on 27 January 2011. CS1 maint: discouraged parameter (link) Siegfried Zielinski ... In 1801, after hearing about the discovery of "heat rays" (infrared radiation) by William Herschel (in 1800), Ritter looked for ... the nature of Johann Wilhelm Ritter's invisible rays", Studies in History and Philosophy of Science Part A, Vol. 40, No. 2, pp ...
Other solar radiation, particularly ultraviolet rays, however, may cause severe sunburn. Without the protection of Earth's ... Another effect is known as cosmic ray visual phenomena. ...[a] NASA survey of 300 male and female astronauts, about 23 percent ... Outside the protection of low Earth orbit, galactic cosmic rays present further challenges to human spaceflight, as the health ... threat from cosmic rays significantly increases the chances of cancer over a decade or more of exposure. A NASA-supported study ...
As sunlight, due to atmosphere's absorption, does not provide much ultraviolet light, the light rich in ultraviolet rays used ... The phenomenological three-step model for ultraviolet and soft X-ray excitation decomposes the effect into these steps: Inner ... Reprinted in Stoletov, M.A. (1888). "On a kind of electric current produced by ultra-violet rays". Philosophical Magazine. ... He allowed ultraviolet light to fall on a freshly cleaned zinc plate and observed that the zinc plate became uncharged if ...
... ultraviolet, cosmic and X-rays from the Solar System and beyond; ionospheric physics; Solar plasma; solar energetic particles; ... IXPE the Imaging X-ray Polarimetry Explorer. 29 August 2017. Proc. SPIE 10397, UV, X-Ray, and Gamma-Ray Space Instrumentation ... "The International Gamma-Ray Astrophysics Laboratory (INTEGRAL)". Heasarc.gsfc.nasa.gov. 2002-10-17. Retrieved 2018-04-28. ... The proposals were Mechanisms of Energetic Mass Ejection - eXplorer (MEME-X), Focusing Optics X-ray Solar Imager (FOXSI), Multi ...
Nevertheless, tourists should be careful with exposure to solar ultraviolet rays. There is nearly no population growth, because ...
Advances in Vacuum Ultraviolet and X-ray Physics. 184 (3): 220-223. doi:10.1016/j.elspec.2010.12.007. ISSN 0368-2048. Bradley, ... It utilizes the technique of X-ray Raman scattering (XRS), also known as Non-resonant Inelastic X-Ray Scattering (NIXS) to ... Electron orbital imaging is an X-ray synchrotron technique used to produce images of electron (or hole) orbitals in real space ... The non-resonant inelastic x-ray scattering cross section is orders of magnitude smaller than that of photoelectric absorption ...
"Unfriended (Blu-ray + DVD + DIGITAL HD with UltraViolet)". Amazon. Retrieved August 12, 2015. "Unfriended (2014)". DVDs Release ... Ray Subers (April 19, 2015). "Weekend Report: 'Furious 7' Beats 'Blart,' Passes $1.1 Billion Worldwide". Box Office Mojo. ( ... Unfriended was released on DVD and Blu-ray on August 11, 2015. It received a Netflix release in May 2017. Unfriended grossed $ ...
... (/ˈreɪli/ RAY-lee), named after the nineteenth-century British physicist Lord Rayleigh (John William Strutt ... In addition the oxygen in the Earth's atmosphere absorbs wavelengths at the edge of the ultra-violet region of the spectrum. ...
Esau, Katherine (2006) [1953]. Evert, Ray F (ed.). Esau's Plant Anatomy: Meristems, Cells, and Tissues of the Plant Body: Their ... ultraviolet damage, or desiccation, or to sacrifice light-absorption efficiency in favor of protection from herbivory. For ...
This ripping off leads to the emission of X-rays and far ultraviolet photons.[11] ... Comets were found to emit X-rays in late-March 1996.[10] This surprised researchers, because X-ray emission is usually ... The X-rays are thought to be generated by the interaction between comets and the solar wind: when highly charged ions fly ... "Ultraviolet study reveals surprises in comet coma , Rosetta - ESA's comet chaser". blogs.esa.int. Retrieved 2017-01-08.. ...
Even minimal skin exposure to the sun's ultraviolet rays can sustain hyperpigmentation.[35] Daily use of SPF 15 or higher ... "Acne Vulgaris and X-Ray Treatment". New England Journal of Medicine. 219 (24): 971. December 1938. doi:10.1056/ ... the use of X-rays was also a common treatment.[189][190] ... "The X-Ray Treatment of Acne Vulgaris". British Medical Journal ...
... and urine, which reflect ultraviolet light, are important to raptors such as kestrels, who can see the near ultraviolet ... Kathryn Hobgood Ray (August 25, 2011). "Cars Could Run on Recycled Newspaper, Tulane Scientists Say". Tulane University news ...
Most geology departments have X-ray powder diffraction equipment to analyze the crystal structures of minerals.[8]:54-55 X-rays ... The solution is vaporized and its absorption spectrum is measured in the visible and ultraviolet range.[9]:225-226 Other ... In a sample that is ground to a powder, the X-rays sample a random distribution of all crystal orientations.[12] Powder ... All other crystals are anisotropic: light passing through them is broken up into two plane polarized rays that travel at ...
Satyajit Ray * sw:Satyajit Ray. Saudi Arabia * sw:Saudi Arabia. Science * sw:Sayansi. Screw * sw:Screw. Sculpture * sw: ... Ultraviolet * sw:Ultraviolet. Umar * sw:Umar ibn al-Khattab. UNESCO * sw:UNESCO. United Kingdom * sw:United Kingdom. United ...
Prolonged exposure to ionising radiation, such as x-rays and gamma rays, will also kill most endospores. ... They are resistant to ultraviolet radiation, desiccation, high temperature, extreme freezing and chemical disinfectants. Thermo ... Kadota H, Iijima K (1965). "The X-ray diffraction pattern of spores of Bacillus subtilis". Agric Biol Chem. 29 (1): 80-81. doi: ... The X-ray diffraction pattern of purified B. subtilis endospores indicates the presence of a component with a regular periodic ...
On the Magnetizing Power of the More Refrangible Solar Rays[19] was one of two papers submitted to Philosophical Transactions ... In it, she communicates her finding that the ultraviolet components of the electromagnetic spectrum could magnetize a steel ... Her 1947 paper, Divergent-Beam X-Ray Photography of Crystals,[23] built on earlier work to show how this nuanced technique ... Lonsdale, K. (1947). "Divergent-Beam X-Ray Photography of Crystals". Philosophical Transactions of the Royal Society A: ...
SWS1 (short-wave sensitive) - ultraviolet or violet - lost in monotremes (platypus, echidna) ... both ray-finned and lobe finned, some modern lizards, and in a number of tetrapodomorph fishes. The infolding appears to evolve ... occurred through passive recoil of the exoskeleton in a manner similar to the contemporary primitive ray-finned fish polypterus ... The ancestors of the ray-finned fishes (Actinopterygii) evolved their fins in a different direction. The Tetrapodomorph ...
Leaks can be detected by divers carrying an ultraviolet light. Cosmetics[edit]. Fluorescein is also known as a color additive ( ... "Phloem as Capacitor: Radial Transfer of Water into Xylem of Tree Stems Occurs via Symplastic Transport in Ray Parenchyma" ...
Ultraljubičastki spektrometar (Ultraviolet Spectrometer (UVS)) Smještaj instrumenata[uredi , uredi izvor]. Instrumenti su ... Podsistem svemirskog zračenja (Cosmic Ray Subsystem (CRS)) *CRS traži plazmu i ima najosjetljivije detektore za tu vrstu ...
... by reflecting the sun's rays while at the same time allowing the surface to discharge its heat as an infrared thermal radiation ...
By finding photographic materials more sensitive to the less refrangible rays, the representation of the colours of objects ... Researchers in 1961 concluded that the seemingly impossible partial success of the red-filtered exposure was due to ultraviolet ...
Ultraviolet and X-ray telescopes can observe highly energetic galactic phenomena. Ultraviolet flares are sometimes observed ... AGNs emit radiation throughout the electromagnetic spectrum from radio wavelengths to X-rays, though some of the radiation may ... The existence of supermassive black holes at the cores of galaxies was confirmed through X-ray astronomy.[151] ... This ultraviolet image of Andromeda shows blue regions containing young, massive stars. ...
... and the pattern of hybridization is visualized on X-ray film by autoradiography in the case of a radioactive or fluorescent ... or exposed to ultraviolet radiation (nylon membrane) to permanently attach the transferred DNA to the membrane. ...
Upgrade is setup for retail in 2 packages, Blu-ray with Digital HD[10] & DVD[11] on 28 August 2018. ... "Upgrade + Digital HD with Ultraviolet". Amazon. Retrieved 28 August 2018.. *^ "Upgrade". Amazon. Retrieved 28 August 2018.. ...
Cosmic rays can be divided into two types, galactic cosmic rays (GCR) and extragalactic cosmic rays, i.e., high-energy ... The latter three of these were first detected in cosmic rays. Primary cosmic rays. Primary cosmic rays primarily originate from ... "Are Cosmic Rays Electromagnetic radiation?". NASA. Retrieved 11 December 2012.. *^ a b "What are cosmic rays?". NASA, Goddard ... 1043 J of cosmic rays.[3][4] However, supernovae do not produce all cosmic rays, and the proportion of cosmic rays that they do ...
Multiplicity reactivation of ultraviolet irradiated virus" (PDF). Virology. 14 (4): 398-405. doi:10.1016/0042-6822(61)90330-0. ... Cosmic ray. *Cosmochemistry. *Diffuse interstellar band. *Earliest known life forms. *Extraterrestrial life ...
... including x-ray, ultraviolet, visible, infrared, and/or microwave wavelengths. ... Main article: Ultraviolet-visible spectroscopy. Most spectrophotometers are used in the UV and visible regions of the spectrum ... Ultraviolet-visible (UV-vis) spectroscopy involves energy levels that excite electronic transitions. Absorption of UV-vis light ... This would come as a solution to the previously created spectrophotometers which were unable to absorb the ultraviolet ...
"Blue-ray Disc Format White Paper" (PDF). March 2005. Archived (PDF) from the original on 2009-07-30. Retrieved 2009-10-03.. ... This camera, in addition to having live preview, has the ability to record in the infrared and ultraviolet spectra of light.[17 ... Blu-ray disc mastering[5] or Digital Cinema Initiatives (DCI). The Canon EOS 5D Mark II (with the release of firmware version ...
Incident light rays onto a textured surface do not reflect back out to the air as opposed to rays onto a flat surface. Rather ... ultraviolet) to produce two lower energy photons. Either of these techniques could be used to produce higher efficiency solar ... Consequently, required thickness for solar cells decreases with the increased absorption of light rays. ... achieved by selectively absorbing the ultraviolet and near-infrared parts of the spectrum with small-molecule compounds.[95][96 ...
X. Fang, L. Hu, K. Huo, B. Gao, L. Zhao, M. Liao, P. K. Chu, Y. Bando and D. Golberg : «New Ultraviolet Photodetector Based on ... An X-ray diffraction study» Chem. Phys. Lett. 466[4-6] (2008) 205-208 DOI:10.1016/j.cplett.2008.10.064 ... L. Li, E. Auer, M. Liao, X. Fang, T. Zhai, U. K. Gautam, A. Lugstein, Y. Koide, Y. Bando and D. Golberg : «Deep-ultraviolet ... X. Zhou, Q. Zhang, L. Gan, X. Li, H. Li, Y. Zhang, D. Golberg, T.Y. Zhai : «High-performance solar-blind deep ultraviolet ...
Contact x-ray brachytherapy[edit]. Contact x-ray brachytherapy (also called "CXB", "electronic brachytherapy" or the "Papillon ... Producing megavolt x-rays required voltages on the x-ray tube of 3 to 5 million volts, which required huge expensive ... "Pioneer in X-Ray Therapy". Science. New Series. 125 (3236): 18-19. 4 January 1957. Bibcode:1957Sci...125T..18.. doi:10.1126/ ... Megavoltage x-ray units were first built in the late 1930s but because of cost were limited to a few institutions. One of the ...
Ray, B. C. (1 June 2006). "Temperature effect during humid ageing on interfaces of glass and carbon fibers reinforced epoxy ... and external paint on the composites parts is applied to minimize damage from ultraviolet light.[5][8] ...
Cuthill, Innes C (1997). "Ultraviolet vision in birds". In Peter J.B. Slater. Advances in the Study of Behavior. 29. Oxford, ... "True or False? "The common goldfish is the only animal that can see both infra-red and ultra-violet light." - Skeptive". ... Birds, too, can see into the ultraviolet (300-400 nm), and some have sex-dependent markings on their plumage that are visible ... only in the ultraviolet range.[10][11] Many animals that can see into the ultraviolet range, however, cannot see red light or ...
Photomedicine involves the use of ultraviolet light, often in combination with oral or topical agents, to treat skin disease (e ... Skin cancers can be managed with excision (including Mohs cancer surgery), cryosurgery, x-ray, or with the recent topical ...
Sunglasses provide more comfort and protection against bright light and often against ultraviolet (UV) light. To properly ... Polarization filters are positioned to remove horizontally polarized rays of light, which eliminates glare from horizontal ... Due to the ultra-violet light blocking nature of these lenses, they also help users sleep at night along with reducing age- ... these computer or gaming glasses can also filter out high energy blue and ultra-violet light from LCD screens, fluorescent ...
... and hence no X-ray emission (or shorter wavelength emissions such as gamma rays) would be observed. However, X-rays can be ... In fact, most Cherenkov radiation is in the ultraviolet spectrum-it is only with sufficiently accelerated charges that it even ... When a high-energy (TeV) gamma photon or cosmic ray interacts with the Earth's atmosphere, it may produce an electron-positron ... His doctorate thesis was on luminescence of uranium salt solutions that were excited by gamma rays instead of less energetic ...
R Ultra Violet Ray and Radiation Machine. U. S. v. August H. Riess (Lawndale Laboratories) 2850. Misbranding of ultraviolet ray ... Violet ray generator device. i( F.D.C. No. 45940. S. No. 20-531 R.) Seizure by the FDA. 4178. Misbranding of Master violet ray ... Violet ray treatments were said to cure everything from lower back pain to carbuncles. From an antique Master Violet Ray manual ... Hruska, E. "Violet Ray: A Handy Healing Device", Cayce.com, 2009. Electrotherapy Museum: Violet Ray related antique devices ...
X-Ray and Extreme Ultraviolet Optics. 2515: 182. doi:10.1117/12.212587. Boerner, P.; Martinez-Galarce, D. S.; Bay, T. J.; ... Ray H. ONeal, Dr. Craig E. DeForest, Dr. Charles C. Kankelborg, Dr. Hakeem M. Oluseyi, Dr. Dennis S. Martinez-Galarce, and Dr ... Bibcode:2002AAS...201.8305B. Walker, A.B.C.; Lindblom, J. F.; Barbee, T. W.; Hoover, R. B. (1988). "Soft X-ray Images of the ... Multilayer and Grazing Incidence X-Ray/EUV Optics. 1546: 175. Bibcode:1992SPIE.1546..175H. doi:10.1117/12.51232. Walker, A.B.C ...
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Do ultraviolet rays kill the coronavirus?. Hiroshima Universitys Professor Ohge Hiroki, an expert on infectious diseases, says ... Ohge says devices which emit ultraviolet rays are already used at the Hiroshima University Hospital to disinfect rooms where ... Although sunlight does contain ultraviolet rays, these are of various wavelengths not as powerful as those created by ... that exposure to high intensity ultraviolet rays of a specific wavelength is believed to diminish the infectious capacity of ...
Tag Archives: Extreme Ultraviolet Sensor/X-Ray Sensor Irradiance Sensors. GOES-R delivered by Atlas V for National Oceanic and ... Tags: Atlas V, Cape Canaveral, Centaur, EXIS, Extreme Ultraviolet Sensor/X-Ray Sensor Irradiance Sensors, Geostationary ... Solar Ultraviolet Imager, Space Environment In-Situ Suite, SpaceX, SRB, SUVI, ULA, United Launch Alliance ...
Simulation of ultraviolet rays on painting - UVTEST. Description. ENSAYO CÁMARA DE ENVEJECIMIENTO ACELERADO ...
Simultaneous Chandra X ray, Hubble Space Telescope ultraviolet, and Ulysses radio observations of Jupiters aurora ...
Adventures With Ultraviolet Rays I grew up in South Texas, and moved back to Texas after a few years in Virginia in the ...
Stratified disc wind models for the AGN broad-line region: ultraviolet, optical and X-ray properties. Monthly Notices of the ... Stratified disc wind models for the AGN broad-line region: ultraviolet, optical and X-ray properties. © 2019 The Authors. This ... Dive into the research topics of Stratified disc wind models for the AGN broad-line region: ultraviolet, optical and X-ray ... Stratified disc wind models for the AGN broad-line region: ultraviolet, optical and X-ray properties. / Matthews, James H.; ...
The transitions between X-ray and extreme-ultraviolet dominated emission are accompanied by intense variability in the X-ray ... X-ray and extreme-ultraviolet luminosities imply accretion rates of 3 × 1015 g s−1 in quiescence, 1 × 1016 g s−1 when the ... The X-ray flux drops suddenly, immediately before the extreme-ultraviolet flux rise, supporting the view that both components ... The X-ray and extreme-ultraviolet flux evolution of SS Cygni throughout outburst ...
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The risk is increased when elevated temperatures are combined with … Continue reading Ultra Violet Rays and Heat Stress → ... Ultra Violet Rays and Heat Stress. People who spend a lot of time in the sun risk developing skin cancer, other skin disorders ...
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  • Ultraviolet rays are part of the electromagnetic spectrum that includes visible light and other forms of natural radiation, such as microwaves and radio waves . (wisegeek.com)
  • The Earth's natural ozone layer filters out much harmful ultraviolet (UV) radiation. (wisegeek.com)
  • The ultraviolet radiation closest to visible light is classified as UVA, UVB, and UVC, while that closest to X-ray radiation is called extreme ultraviolet (EUV). (wisegeek.com)
  • Cataracts and macular degeneration are just some of the conditions that can develop due to ultraviolet radiation and aging. (epa.gov)
  • AP) -- The protective ozone layer in the Arctic that keeps out the sun's most damaging rays - ultraviolet radiation - has thinned about 40 percent this winter, a record drop, the U.N. weather agency said Tuesday. (phys.org)
  • Ultraviolet rays are electromagnetic radiation. (instructables.com)
  • Dimethylthymine was photodimerized with ultraviolet radiation, and the structure of one of the resulting dimers, the cis 5,5 : 6,6 isomer, was determined by single-crystal x-ray diffraction. (sciencemag.org)
  • Ultraviolet rays are a form of electromagnetic radiation (like light, x-rays, and microwaves) that can cause skin damage, tanning, skin cancer, and are a normal part of metabolism of vitamin D. (healthtap.com)
  • Taken in January 2017, the three images capture Jupiter with three different radiation: infrared, visible light and ultraviolet light. (smallcapnews.co.uk)
  • Impulsive solar bursts of hard X-rays observed with moderate spectral resolution and high time resolution by the OGO S satellite were compared with concurrent enhancements of extreme- ultraviolet (EUV) radiation observed by means of sudden frequency deviations. (harvard.edu)
  • Ultraviolet (UV) rays are a part of sunlight that is an invisible form of radiation. (hsewatch.com)
  • Ultraviolet (UV) radiation is similar to visible light in all physical aspects, except that it does not enable us to see things. (hsewatch.com)
  • Occupational risk factors, ultraviolet radiation, and ocular melanoma: A case-control study in France. (hsewatch.com)
  • The analysis based on the job exposure matrix showed a significantly increased risk of ocular melanoma in occupational groups exposed to artificial ultraviolet radiation, but not in outdoor occupational groups exposed to sunlight. (hsewatch.com)
  • Ultraviolet radiation is the signature of hotter objects, typically in the early and late stages of their evolution. (space.fm)
  • 981. Misbranding of R & R Ultra Violet Ray and Radiation Machine. (wikipedia.org)
  • Much work has been done to characterize materials which can be used for filters in the vacuum ultraviolet and X-ray region of the electromagnetic spectrum from about 1500 A down to 10 A more or less. (spie.org)
  • We present the results of recent Chandra High-Energy Transmission Grating Spectrometer and Hubble Space Telescope Cosmic Origins Spectrograph observations of the nearby Seyfert 1 galaxy NGC 3783, which show a strong, nonvarying X-ray warm absorber and physically related and kinematically varying UV absorption. (elsevier.com)
  • The ultraviolet analysis includes two recent observations taken with the Cosmic Origins Spectrograph (COS) in 2009 August and December, as well as archival spectra from the International Ultraviolet Explorer and the Hubble Space Telescope. (vt.edu)
  • PhysOrg.com) -- Many advanced laser technologies, such as laser spectroscopy, that use precise wavelengths of infrared, visible or ultraviolet laser light could benefit from using X-ray light as well. (phys.org)
  • Because Ultraviolet Rays have higher wavelengths than the visual light spectrum. (instructables.com)
  • In addition to permitting traditional normal incidence optical configurations such as Cassegrain, Ritchey-Chrétien and Herschelian to be used at soft x-ray/EUV wavelengths, multilayer coatings also allow a narrow wavelength band (A/AX -45 - 100) to be selected for imaging. (spie.org)
  • The wavelengths which these sun ray equipment are employed are between your measurement amounts between 200 and 300 nanometers. (the-guitarplayer.com)
  • All disc editions will contain access to an UltraViolet digital copy of the film to download or store in the cloud. (hd-report.com)
  • The Blu-ray Disc edition (as well as DVD) includes an UltraViolet digital copy you can download from the cloud. (hd-report.com)
  • The film is available in several editions including a 3D Blu-ray Disc Combo Pack that packs both 3D and 2D versions of the film, a DVD copy, and access to an UltraViolet copy (that's four types of media in one box! (hd-report.com)
  • Both discs also contain an UltraViolet copy. (hd-report.com)
  • The Friday before Memorial Day has been designated as " Don't Fry Day " to make sure that people in this country enjoy outdoor activities while protecting themselves from the harmful ultraviolet rays that shine through even on the cloudiest days. (epa.gov)
  • So, regardless of your natural skin tone or where you live, you should protect yourself from those harmful ultraviolet rays. (epa.gov)
  • V-RAY WD is a UVC lamp disinfection system designed to be subjected to power wash down without removing the lamp from its installation location. (environmental-expert.com)
  • The UV disinfection services use ultraviolet rays as mechanisms of eradication of microorganisms. (the-guitarplayer.com)
  • It stands during by-rays uv disinfection services and perceptible lighting. (the-guitarplayer.com)
  • Additive effect of ultraviolet rays and triethylene glycol in air disinfection]. (semanticscholar.org)
  • Occupational effect of ultraviolet ray is a global concern because of the effect of the UV light on different occupational categories. (hsewatch.com)
  • V-RAY SUS is designed for coil irradiation of small HVAC systems such as unit ventilator PTAC units, heat pumps and single room units where space is limited and low output UVC energy is sufficient to maintain coil and drain pan cleanliness. (environmental-expert.com)
  • Publications] Ohwatari N: 'TGF-β 1 mediates 70-kDa heat shock protein induction due to ultraviolet irradiation in human skin fibroblasts'Pfliigers Arch-Eur J Physiol. (nii.ac.jp)
  • On disc, 'Ghost Protocol' will ship as a Limited Edition three-disc Blu-ray/DVD combo pack with over two hours of special features. (hd-report.com)
  • You'll also be able to get the film in a two-disc Blu-ray/DVD combo pack, or single-disc DVD (those editions containing some selected special features. (hd-report.com)
  • Vanadium is present in the most stable condition usually in the form of V 5+ in the glass and has an absorption band in a near ultraviolet region (350 nm), and thus it is a component which provides ultraviolet ray-absorbing effects. (google.com)
  • However, if the amount is less than 0.08 wt %, the effects tend to be low, and if it exceeds 0.20 wt %, its influence over absorption of near ultraviolet rays and visible lights tends to be substantial. (google.com)
  • Turner, T. J. / Long-term x-ray stability and ultraviolet variability of the ionized absorption in NGC 3783 . (elsevier.com)
  • The ASIM data captured high-speed observations of the event in optical, ultraviolet, x-ray and gamma-ray bands, which allowed Neubert et al. (eurekalert.org)
  • We have developed compact soft x-rayfEUV (XUV), and far-ultraviolet (FtJV) multilayer coated telescopes for the study of the solar chromosphere, corona, and corona/solar wind interface. (spie.org)
  • The film will be available on Blu-ray Disc and DVD, as well as VOD, Digital Download, and UltraViolet. (hd-report.com)
  • In addition, extreme ultraviolet light from NASA's Solar Dynamics Observatory (SDO) is yellow and red. (earth.com)
  • These images are over the span of a week, and are Extreme ultraviolet Imaging Telescope (EIT) of the Solar and Heliospheric Observatory (SOHO), at a wavelength of 284 angstroms. (superstock.com)
  • Impulsive extreme-ultraviolet and hard X-ray emission during solar flares. (harvard.edu)
  • At the opposite end of the visible spectrum, with a wavelength slightly shorter than blue and violet light, are ultraviolet rays. (wisegeek.com)
  • The final image was captured in an ultraviolet spectrum and resembles a dazzling cotton candy ball. (smallcapnews.co.uk)
  • X-Rays are produced by hotter objects outside of the visual band of the electromagnetic spectrum. (space.fm)
  • The effect of fast-moving particles under strong gravitational forces that surround a black hole can be observed in the x-ray part of the spectrum. (space.fm)
  • In a study of the variability of Mrk 817, we find that the X-ray luminosity varies by a factor of similar to 40 over 20 years, while the UV continuum/emission lines vary by at most a factor of similar to 2.3 over 30 years. (vt.edu)
  • The variability of the X-ray luminosity is strongly correlated with the X-ray power-law index, but no correlation is found with the simultaneous optical/UV photometry. (vt.edu)
  • The living being on earth has been acquiring defense function to ultraviolet rays in process of evolution. (nii.ac.jp)
  • About its effectiveness as being a defense strategy, UV cleaning services are carried out with devices made up of and transforming Ultra violet rays beyond their natural array. (the-guitarplayer.com)
  • Inks that fluoresce, or glow, under UV rays are used to create "black light" posters, clothing, and makeup. (wisegeek.com)
  • Do Ultraviolet rays travel faster than Light? (instructables.com)
  • Coronal holes appear as dark areas of the corona when viewed in ultraviolet light and in X-rays. (superstock.com)
  • From radio waves, harnessed for telecommunications, to X-rays, which let us peer inside the human body and view areas around black holes in deep space, Arcand and Watzke show us all the important ways light impacts us. (quaidelices.com)
  • in the 3, photo sources does not have the mercury, in the light beam not to contain the ultraviolet ray. (jugem.jp)
  • Earth's atmosphere blocks gamma and x-rays and most ultraviolet light. (space.fm)
  • Ultraviolet observation lets us study the chemical make-up and temperature of stars and lets us see stars at different stages of their evolution. (space.fm)
  • We find no statistically significant changes in the physical properties of the X-ray absorber, but there is a significant drop of ∼40% in the UV and X-ray flux and a significant flattening of the underlying X-ray power-law slope. (elsevier.com)
  • The results help reveal the process by which terrestrial gamma-ray flashes (TGFs) are generated from thunderstorms, which has been debated. (eurekalert.org)
  • The Neil Gehrels Swift Observatory has operated since 2004 and recorded over 1,000 gamma ray bursts. (space.fm)
  • A method and apparatus for producing x-ray and/or extreme ultraviolet (EUV) is described. (google.com)
  • Eye medical doctors (ophthalmologists) caution us that too much exposure to UV rays raises the risks of eye diseases, including cataract, growths on the eye, and cancer. (hsewatch.com)
  • I currently own the Blu-ray edition that Amazon lists as "Multi-format" and has a blue cover that says "Anniversary Edition" at the top and it contains only the ORIGINAL 1982 version of the film (which is undoubtedly the superior version of the two, since it omits the "not ready for prime time" CGI effects that many believe ruined this classic movie. (loginby.com)
  • As noted above, I did enjoy the scene with ET in the bathroom that was added to the 20th anniversary edition and it IS included on this 30th anniversary blu-ray edition as a deleted scene (along with one other scene where Elliot's mom is asked where Elliot is on Halloween). (loginby.com)
  • In the outdoors, ultraviolet rays measures are necessary with heat stroke measures. (nii.ac.jp)
  • However, heat stroke measures and the ultraviolet rays measures do antinomy. (nii.ac.jp)
  • This study provides information about the clothes which are effective for heat stroke measures in consideration of ultraviolet rays measures and the heat-tolerance acquisition and we aim at the contribution to society by showing healthy information avoiding heat stroke and ultraviolet rays obstacle. (nii.ac.jp)
  • Using instruments onboard the International Space Station, researchers have observed millisecond pulses of gamma-rays produced by thunderstorms, clarifying the process by which these flashes are made, and discovering that they can produce an ultraviolet emission known as an "Elve. (eurekalert.org)
  • Elves, one type of this phenomenon, are expanding waves of ultraviolet and optical emission in the ionosphere above the thunderstorm. (eurekalert.org)
  • A population inversion in the confined plasma column will lead to a amplified simultaneous emission of x-ray and/or EUV 6 along the axis of plasma column 4. (google.com)
  • Ultraviolet rays are themselves divided into several categories, depending on their wavelength and their effects on human health. (wisegeek.com)
  • As part of Villanova's Living with a Red Dwarf program, we have obtained UV, X-ray and optical data of the Population II red dwarf -- Kapteyn's Star. (arxiv.org)
  • And we learned that Kirby is so young that his skin is sensitive to UV rays. (absoluteanime.com)
  • There are two kinds of ultraviolet or UV rays, UVA and UVB, which can cause sunburn and skin damage. (sharecare.com)
  • In this study, the black lower part of body hair absorbed significantly ultraviolet rays (UV) energy in comparison with white hair in wistar rat, and the two colors structure of body hair is effective function to protect the skin from UV for the body hair characteristic type. (nii.ac.jp)
  • Moreover, there are people who benevolently expose their skin to the powerful sun rays without any protection, thus damaging their skin willingly. (paulussantoso.com)
  • Well, the ultraviolet rays which come from the sun are the ones which affect the skin. (paulussantoso.com)
  • In addition to giving the skin a darker color, the melanin is also responsible with absorbing and neutralizing the ultraviolet rays coming from the sun. (paulussantoso.com)
  • Thus, people with darker skin have more melanin in the composition of the skin, thus are less prone to skin lesions or burns caused by the sun rays. (paulussantoso.com)
  • On the other hand, people with lighter skin lack the necessary amount of melanin which can effectively combat the sun rays, thus are more susceptible to burns and skin damages cause by sun. (paulussantoso.com)
  • We all know UV rays can definitely affect our skin (i.e. wrinkles, sun spots, moles, skin cancer, etc. (hsewatch.com)
  • This market research report examines the foreign trade of Oman and its perspectives on the global market for ultra-violet or infra-red ray apparatus. (marketpublishers.com)
  • The report will be of considerable interest primarily to relevant strategic planners, senior company officials and importers/exporters, since it features invaluable information on ultra-violet or infra-red ray apparatus export/import operations in Oman. (marketpublishers.com)
  • The report studies how Oman behaves on the global market for ultra-violet or infra-red ray apparatus. (marketpublishers.com)
  • It also assesses the dynamics of country's foreign trade in ultra-violet or infra-red ray apparatus in 2006-2016. (marketpublishers.com)
  • The report indicates major suppliers and consumers of ultra-violet or infra-red ray apparatus in Oman. (marketpublishers.com)
  • The final chapter provides in-depth analysis of prospects for the country's foreign trade in ultra-violet or infra-red ray apparatus, as well the forecast for the development of the market for ultra-violet or infra-red ray apparatus up to 2021. (marketpublishers.com)
  • We present average price forecast for ultra-violet or infra-red ray apparatus. (marketpublishers.com)
  • World: Electro-Diagnostic Apparatus, And Ultra-Violet Or Infra-Red Ray Apparatus - Market Report. (marketresearch.com)
  • Electro-diagnostic apparatus (including apparatus for functional exploratory examination or for checking physiological parameters), such as electro-cardiographs, ultrasonic scanning apparatus, magnetic resonance imaging apparatus, scintigraphic apparatus and ultra-violet or infra-red ray apparatus. (marketresearch.com)
  • With the release of Blu-ray and Amazon Instant Video, this has caused some confusion over which version(s) are featured on each format. (loginby.com)
  • NuSTAR is typically used to look deeper into space to observe X-rays from supernovas and black holes, but it can also look safely at the sun and capture images of its high-energy X-rays. (earth.com)
  • The MISSION: IMPOSSIBLE-GHOST PROTOCOL Blu-ray containing the main feature is presented in 1080p high definition with English 7.1 Dolby TrueHD, French 5.1 Dolby Digital, Spanish 5.1 Dolby Digital, Portuguese 5.1 Dolby Digital and English Audio Description and English, English SDH, French, Spanish and Portuguese subtitles. (hd-report.com)
  • Publications] Ohwatari N: 'Depression of immunological ability by ultraviolet rays and protection from ultraviolet. (nii.ac.jp)
  • Most of the antique violet rays in the US were produced before the Depression era, and some of the larger US manufacturers of violet rays were Renulife, Fitzgerald, and Fisher. (wikipedia.org)
  • Many of the companies who were able to continue manufacturing violet rays after the Depression stopped making them due to World War II, when they began manufacturing radio coils and other electrical components for the war instead. (wikipedia.org)
  • The animation shows more on protection from these rays. (sharecare.com)
  • Scientists use ultraviolet rays for analytic purposes in fields ranging from forensics to astronomy. (wisegeek.com)
  • In these wild animals, negative correlation was recognized during ultraviolet permeability through body hair with epidermis and UV intensity in habitation. (nii.ac.jp)
  • The item Chemical action of ultraviolet ray represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in Indiana State Library . (in.gov)
  • The Sun is observed in ultraviolet by space platforms such as SDO and SOHO observatories where the corona and chromosphere can be studied in detail. (space.fm)
  • If the total iron amount is less than 0.06 wt %, the effects for absorbing ultraviolet rays tend to be inadequate, or the glass tends to undergo a color change to an amber color. (google.com)
  • Ultraviolet rays are invisible to the unaided human eye, but have a wide range of physical effects. (wisegeek.com)
  • Our measures can help determine the X-ray--UV effects on planets hosted by Kapteyn's Star, and planets hosted by other old red dwarfs. (arxiv.org)
  • Receive email alerts on new books, offers and news in Denver X-Ray Conference. (cambridge.org)
  • Total external reflection is a phenomenon traditionally involving X-rays, but in principle any type of electromagnetic or other wave, closely related to total internal reflection. (wikipedia.org)