Ultraviolet Rays: 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.Ultraviolet Therapy: 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.Spectrophotometry, Ultraviolet: 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)Gamma Rays: 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.Radiation Effects: 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.PUVA Therapy: Photochemotherapy using PSORALENS as the photosensitizing agent and ultraviolet light type A (UVA).Animal Fins: Membranous appendage of fish and other aquatic organisms used for locomotion or balance.Electromagnetic Fields: Fields representing the joint interplay of electric and magnetic forces.Electromagnetic Phenomena: 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.Dermoscopy: A noninvasive technique that enables direct microscopic examination of the surface and architecture of the SKIN.Absorbent Pads: 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.Iron: 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.Glass: 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.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Vanadium: 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.WT1 Proteins: 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.Poetry as Topic: Literary and oral genre expressing meaning via symbolism and following formal or informal patterns.PoetryPassiflora: A plant genus of the family Passifloraceae, order Violales, subclass Dilleniidae, class Magnoliopsida. They are vines with ornamental flowers and edible fruit.Air Movements: The motion of air currents.Human Activities: Activities performed by humans.Grief: Normal, appropriate sorrowful response to an immediate cause. It is self-limiting and gradually subsides within a reasonable time.New JerseyEarth Sciences: 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.Science: The study of natural phenomena by observation, measurement, and experimentation.Physics: 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)Internet: 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.Portal Vein: A short thick vein formed by union of the superior mesenteric vein and the splenic vein.Nuclear Physics: 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)Videodisc Recording: The storing of visual and usually sound signals on discs for later reproduction on a television screen or monitor.Esotropia: 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.Television: 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)Strabismus: 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)Commerce: 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)Eye Movements: Voluntary or reflex-controlled movements of the eye.New Zealand: 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)Intervertebral Disc: Any of the 23 plates of fibrocartilage found between the bodies of adjacent VERTEBRAE.Transportation: The means of moving persons, animals, goods, or materials from one place to another.Famous PersonsLight: That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.Travel: Aspects of health and disease related to travel.Color: The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.Filtration: A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Germanium: A rare metal element with a blue-gray appearance and atomic symbol Ge, atomic number 32, and atomic weight 72.63.Lasers: 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.Magnetic Fields: Areas of attractive or repulsive force surrounding MAGNETS.Magnetics: The study of MAGNETIC PHENOMENA.Electricity: The physical effects involving the presence of electric charges at rest and in motion.Motion Pictures as Topic: The art, technique, or business of producing motion pictures for entertainment, propaganda, or instruction.Imitative Behavior: The mimicking of the behavior of one individual by another.Selection, Genetic: Differential and non-random reproduction of different genotypes, operating to alter the gene frequencies within a population.DNA Copy Number Variations: Stretches of genomic DNA that exist in different multiples between individuals. Many copy number variations have been associated with susceptibility or resistance to disease.Molecular Sequence Data: 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.

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)

The report firstly introduced Ultraviolet Ray Phototherapy Apparatus basic information included Ultraviolet Ray Phototherapy Apparatus definition classification application industry chain structure industry overview; international market analysis, China domestic market analysis, Macroeconomic environment and economic situation analysis and influence, Ultraviolet Ray Phototherapy Apparatus industry policy and plan, Ultraviolet Ray Phototherapy Apparatus product specification, manufacturing process, product cost structure etc.. Browse Full Report with TOC @ http://www.qyresearchreports.com/report/global-and-china-ultraviolet-ray-phototherapy-apparatus-industry-2013-market-research-report.htm. Then statistics Global and China key manufacturers Ultraviolet Ray Phototherapy Apparatus capacity production cost price profit production value gross margin etc details information, at the same time, statistics these manufacturers Ultraviolet Ray Phototherapy Apparatus products customers application capacity ...
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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 ...
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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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.
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,
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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 ...
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
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.
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.
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 ] ...
... the monitoring of uv sources is an important precautionary measure to avoid health hazards when handling short-wave radiation. in the case of water treatment thorough monitoring is even prescribed
We propose that nanophase iron-oxide-bearing materials provided important niches for ancient photosynthetic microbes on the Earth that ultimately led to the oxygenation of the Earths atmosphere and the formation of iron-oxide deposits. Atmospheric oxygen and ozone attenuate ultraviolet radiation on the Earth today providing substantial protection for photosynthetic organisms. With ultraviolet radiation fluxes likely to have been even higher on the early Earth than today, accessing solar radiation was particularly risky for early organisms. Yet, we know that photosynthesis arose early and played a critical role in subsequent evolution. Of primary importance was protection below 290 nm, where peak nucleic acid (~260 nm) and protein (~280 nm) absorptions occur. Nanophase ferric oxide/oxyhydroxide minerals absorb, and thus block, the lethal ultraviolet radiation, while transmitting light through much of the visible and near-infrared regions of interest to photosynthesis (400 to 1100 nm). ...
Ultraviolet Blood Irradiation is often referred to as UVBI or photoluminescence. UVBI involves drawing a small amount of blood from a person, adding an anticoagulant to keep it from clotting, exposing the blood to ultraviolet light at a specific frequency as it passes through a sterile crystal tube (cuvette) in a closed, airtight circuit, and immediately administering the blood that has been irradiated or illuminated by the ultraviolet light back into the same person by intravenous infusion at the same place in the vein from which it had been drawn. Ultraviolet Blood Irradiation is a tested and proven therapy that is safe and effective for a wide range of health problems with virtually no side effects when performed correctly. It is common knowledge that, for many years, ultraviolet light has been used for disinfection. Exposing blood to ultraviolet light also kills bacteria, viruses and fungi in the blood that is exposed to UV light and when that UV irradiated blood is reintroduced into the ...
Skin79 Super Plus Beblesh Balm Triple Functions Whitening UV Protection SPF25 PA++ (Hot Pink): rated 4.0 out of 5 on MakeupAlley. See 241 member reviews, ingredients and photos. filter: reviewer skin type Combination
New York, NY (UPDATED September 1, 2015) - Ultraviolet radiation-emitting nail lamps have become a regular part of most trips to the nail salon, causing many patrons to question manicure safety. These lamps are typically used to speed-dry regular manicures, and they are actually necessary to set gel manicures. Some nail lamps are called "UV" lamps, and some are called LED lamps, but both emit UV radiation. They predominantly produce UVA rays, which have been linked to both premature skin aging and skin cancer. However, even the most intense of these devices presents only a moderate UV risk - a far lower risk than that presented by UV tanning devices. To play it safe with gel manicures, The Skin Cancer Foundation recommends applying a broad spectrum (UVA/UVB) sunscreen to hands 20 minutes prior to UV light exposure. If getting a regular manicure, the safest bet is to allow nails to air-dry naturally, avoiding the drying lamps altogether. Remember, all nail lamps produce UV radiation. --Skin ...
Dr. Kira responded: Maybe. Some studies have shown a link between cataracts and sunlight exposure but the cornea absorbs most of the uv. Regardless, uv protection is a good thing to have and is incorporated into most |a href="/topics/glasses" track_data="{
Suzuki, M.; Nakabayashi, R.; Ogata, Y.; Sakurai, N.; Tokimatsu, T.; Goto, S.; Suzuki, M.; Jasinski, M.; Martinoia, E.; Otagaki, S.; Matsumoto, S.; Saito, K.; Shiratake, K., Multi omics in grape berry skin revealed specific induction of stilbene synthetic pathway by UV-C irradiation Plant Physiol. 168, 47-59 (2015) [pubmed ...
Knowing your familys history when it comes to eye disease can really be beneficial to you. The sooner you catch something, the sooner treatment can start to help maintain your eye health longer.. Omega-3 fatty acids are great for excellent eye care. It would be a great idea to make use of foods that contain this nutrient into your diet. Foods such as tuna, salmon, salmon and dark, leafy green vegetables. Get one serving eaten every day you can.. Wearing good sunglasses help keep your eyes protected from UV rays. Too much UV exposure can cause damage to the eyes. Find ones that address UVB rays and UVA rays. You also have the choice of wraparound glasses that protect all possible angles.. Help your eyes healthy by wearing a pair of good quality sunglasses. They can keep your eyes protected from damaging ultraviolet rays. The sunglasses you choose should block all UVA and UVB rays. They also help you reduce any glare. Even with contacts that have UV protection, wearing sunglasses is still ...
Skin79 Super Plus Beblesh Balm Triple Functions Whitening UV Protection SPF25 PA++ (Hot Pink): rated 4.0 out of 5 on MakeupAlley. See 56 member reviews, ingredients and photos. filter: reviewer eye Color Hazel
PubMed comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
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 ...
In CsA-treated transplant recipients, immunosuppression has been widely accepted as the major cause of increased skin carcinogenesis. However, consistent with epidemiologic data supporting the critical role of UV radiation, we have used controlled laboratory in vitro and in vivo models to show that CsA impairs the DNA repair and DDR in the response of keratinocytes to UVB. As a consequence, in immunocompromised nude mice, CsA increased skin tumorigenesis in which UVB damage and PI3K/AKT activation are required. At the molecular level, CsA downregulates the DNA repair protein XPC and upregulates the CsA-binding partner CypA through activating the PI3K/AKT pathway. Blocking UVB damage or inhibiting the PI3K/AKT pathway prevents CsA-sensitized skin tumorigenesis. Our findings further support a cell-autonomous action of CsA on skin tumorigenesis.. Following UVB damage, CsA inhibited UVB-induced DNA damage repair through suppressing XPC transcription. Consistent with recent studies using human ...
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"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 ...
Loeb, J (1914), "ACTIVATION OF THE UNFERTILIZED EGG BY ULTRA-VIOLET RAYS.", Science (published Nov 6, 1914), 40 (1036), pp. 680 ...
... "tithonic rays"[10][11]). The terms "chemical rays" and "heat rays" were eventually dropped in favor of ultraviolet and infrared ... "Ultraviolet Light, UV Rays, What is Ultraviolet, UV Light Bulbs, Fly Trap". Pestproducts.com. Archived from the original on 8 ... Ultraviolet rays are invisible to most humans. The lens of the human eye blocks most radiation in the wavelength range of 300- ... Small birds have a fourth color receptor for ultraviolet rays; this gives birds "true" UV vision.[8][9] ...
... including ultraviolet rays and ozone were sometimes blamed for the damage.[29] Many physicians claimed that there were no ... It also absorbs gamma rays, which produces X-ray fluorescence. Each subsequent layer absorbs the X-ray fluorescence of the ... In x-ray facilities, walls surrounding the room with the x-ray generator may contain lead sheets, or the plaster may contain ... Geoff Meggitt (2008), Taming the Rays - A history of Radiation and Protection., Lulu.com, ISBN 978-1-4092-4667-1. ...
Ozone (O3) and molecular oxygen (O2) absorb light with wavelengths under 300 nm, meaning that X-ray and ultraviolet ... "Discovery of X-ray and Extreme Ultraviolet Emission from Comet C/Hyakutake 1996 B2". Science. 274 (5285): 205-209. Bibcode: ... Nearby comets can even be seen in X-ray as solar wind ions flying to the coma are neutralized. The cometary X-ray spectra ... Astronomical spectroscopy is used to measure three major bands of radiation: visible spectrum, radio, and X-ray. While all ...
However, the virus is destroyed rapidly by dehydration and by the ultraviolet rays in sunlight. Smuggled pet birds, especially ...
... "tithonic rays"[10][11]). The terms "chemical rays" and "heat rays" were eventually dropped in favor of ultraviolet and infrared ... "Ultraviolet Light, UV Rays, What is Ultraviolet, UV Light Bulbs, Fly Trap". Pestproducts.com. Archived from the original on 8 ... Ultraviolet rays are invisible to most humans. The lens of the human eye blocks most radiation in the wavelength range of 300- ... Gas lasers, laser diodes and solid-state lasers can be manufactured to emit ultraviolet rays, and lasers are available which ...
Their skins were exposed to harmful ultraviolet rays that had previously been absorbed by the water. The skin changed to become ... ultraviolet radiation has shown to be especially damaging to the skin, eyes, and eggs of amphibians), and diseases like ... the pigment melanin which raises their temperature through the absorption of light and also protects them against ultraviolet ...
X-rays have so much energy that they can go deep into the human body and kill cells. Humans cannot see or feel ultraviolet ... Areas where it is important to kill germs often use ultraviolet lamps to destroy bacteria, fungi, etc. X-rays are sometimes ... Ultraviolet light is higher in frequency than violet light, such that it is not even in the visible light range. Each photon in ... Putting in different numbers for m and n, it is easy to predict frequencies for many types of light (ultraviolet, visible, and ...
Weakened by the sun's ultraviolet rays, Lerigot meets a pack of chimpanzees and wanders off with them. Meanwhile, Divatox sets ... A Power Rangers Movie would be released for the first time on Blu-ray. It was released on July 30, 2019.[15] ...
"Discovery of X-ray and Extreme Ultraviolet Emission from Comet C/Hyakutake 1996 B2". Science. 274 (5285): 205. Bibcode:1996Sci ... In 1996, comets were found to emit X-rays.[57] This greatly surprised astronomers because X-ray emission is usually associated ... solar wind ion is followed by its de-excitation into the ground state of the ion by the emission of X-rays and far ultraviolet ... The X-rays are generated by the interaction between comets and the solar wind: when highly charged solar wind ions fly through ...
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 ...
Soft X-Rays and Extreme Ultraviolet Radiation. Cambridge University Press. ... For X-rays, however, all materials have indices of refraction slightly below 1. This entails that total reflection of X-rays ... This makes it possible to focus X-rays (see, for example, NASA https://imagine.gsfc.nasa.gov/science/toolbox/xray_telescopes1. ...
... thermoset polymer is known for long-term weathering ability and can withstand fluctuations in temperature and ultraviolet rays ... UV-rays oxidize the surface of the asphalt and produce a chalk-like residue. As plasticizers leach out of the asphalt, asphalt ... A roof made of thermoplastic white vinyl, for example, can reflect 80% or more of the sun's rays and emit at least 70% of the ... Roofing systems that can deliver high solar reflectance (the ability to reflect the visible, infrared and ultraviolet ...
... ultraviolet laser, X-ray laser, gamma-ray laser, and so on. Because the microwave predecessor of the laser, the maser, was ... thus x-rays: xaser, ultraviolet: uvaser, et cetera; none established itself as a discrete term, although "raser" was briefly ... Space-based X-ray lasers pumped by a nuclear explosion have also been proposed as antimissile weapons. Such devices would be ... While many scientists remain optimistic that a breakthrough is near, an operational gamma-ray laser is yet to be realized. Some ...
permits 40% of the sun's ultraviolet rays CS1 maint: Unfit url (link) "Tan-tastic bikini that lets rays shine through". Daily ... but excessive exposure to ultraviolet rays has negative health effects, including sunburn and increased risk of skin cancer, as ... The ultraviolet frequencies responsible for tanning are often divided into the UVA and UVB ranges. Ultraviolet A (UVA) ... Ultraviolet B (UVB) radiation is in the wavelength range 280 to 320 nm. Much of this band is blocked by the Earth's ozone layer ...
permits 40% of the sun's ultraviolet rays CS1 maint: Unfit url (link) "Tan-tastic bikini that lets rays shine through". Daily ... Tan-through swimwear typically allows more than one-third of UV rays to pass through (equivalent to SPF 3 or less), and an ... 80 per cent of UV rays... a stretchy yarn described as 'a chicken wire mesh material' ... between an area of pronounced comparative paleness relative to other areas that have been suntanned by exposure to ultraviolet ...
Darker-skinned people need to be exposed longer to the ultraviolet rays. The replacement of vitamin D has been proven to ... An X-ray or radiograph of an advanced sufferer from rickets tends to present in a classic way: the bowed legs (outward curve of ... Northern latitudes have selection for lighter skin that allows UV rays to produce vitamin D from 7-dehydrocholesterol. ... Treatment involves increasing dietary intake of calcium, phosphates and vitamin D. Exposure to ultraviolet B light (most easily ...
Darker-skinned people need to be exposed longer to the ultraviolet rays. The replacement of vitamin D has been proven to ... An X-ray or radiograph of an advanced sufferer from rickets tends to present in a classic way: the bowed legs (outward curve of ... X-ray of a two-year-old with rickets, with a marked bowing of the femurs and decreased bone density. ... Sunlight, especially ultraviolet light, lets human skin cells convert vitamin D from an inactive to active state. In the ...
This aromatic chemical absorbs ultraviolet rays thereby preventing sunburn. However, its chemical structure and behaviour is ...
Ultraviolet rays may also damage crops and aquatic ecosystems. The first SBUV/2 instrument was launched on NOAA-9 in December ... Atmospheric ozone absorbs the sun's ultraviolet rays, which are believed to cause gene mutations, skin cancer, and cataracts in ... The Solar Backscatter Ultraviolet Radiometer, or SBUV/2, is a series of operational remote sensors on NOAA weather satellites ... "Backscatter Ultraviolet (BUV) Spectrometer". National Space Science Data Center. NASA. 26 August 2014. Retrieved 5 June 2015. ...
He mainly worked on ultraviolet rays on viruses research. He was a head researcher at Manhattan's International Hospital. Also ... "The Resistance of Different Concentrations of a Bacteriophage of Ultraviolet Rays". Journal of Infectious Diseases 40 (1927). " ... Fisher died in 1934 at the age of 37 from abdominal cancer likely caused by his own x-ray experimentation. He was buried in ... The Wall of Jericho (1928) The Conjure Man Dies: A Mystery Tale of Dark Harlem (1932) "Action of Ultraviolet Light upon ...
Furthermore, inadequate clothing could increase exposure to ultraviolet rays; aggravate allergies and skin conditions; and ...
Nagano Y, Kojima Y (October 1954). "[Immunizing property of vaccinia virus inactivated by ultraviolets rays]". Comptes Rendus ...
Ultraviolet B rays from sunlight is a large source of vitamin D. Salmon, herring, and mackerel, are also sources of Vitamin D. ... in particular sunlight with adequate ultraviolet B rays). Vitamin D deficiency can also be caused by inadequate nutritional ... Melanin absorbs ultraviolet B radiation from the sun and reduces vitamin D production. Sunscreen can also reduce vitamin D ...
... (/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. ...
Wear sunglasses that block ultraviolet B (UVB) rays when youre outdoors.. *Reduce alcohol use. Excessive alcohol use can ... Wear sunglasses. Ultraviolet light from the sun may contribute to the development of cataracts. ...
Though long-term exposure to ultraviolet rays can... ... Ultraviolet rays are electromagnetic rays that are invisible to ... The ultraviolet radiation closest to visible light is classified as UVA, UVB, and UVC, while that closest to X-ray radiation is ... Ultraviolet rays are invisible to the unaided human eye, but have a wide range of physical effects. These include chemical ... Ultraviolet rays are part of the electromagnetic spectrum that includes visible light and other forms of natural radiation, ...
Ultraviolet ray absorbent colored glass for buildings and vehicles, which consists essentially of from 65 to 75 wt % of SiO2, ... and the discoloration due to the ultraviolet rays was measured. The dose of the ultraviolet rays corresponded to the amount of ... The one present in the form of Fe3+ is an ultraviolet ray absorbing component having an absorption band in a near ultraviolet ... brown-colored glass which is excellent in the ultraviolet ray absorbing ability and which is not discolored by ultraviolet rays ...
Health and environmental effects of ultraviolet radiation : a summary of Environmental health criteria 160, ultraviolet ... Immunosuppression induced by ultraviolet radiation : relevance to public health : public health classics / Mary Norval  ... Protection against exposure to ultraviolet radiation  World Health Organization. Office of Global and Integrated Environmental ...
... www.fye.com/paterson-includes-digital-copy-ultraviolet-blu-ray-aec.mhv61186638br.html aec.mhv61186638br $16.99 ... Paterson [Includes Digital Copy] [UltraViolet] [Blu-ray]. Details. https:// ...
Sari Kovats, R; Menne, Bettina; McMichael, Andrew J; Bertollini, Roberto; Soskolne, Colin; World Health Organization. Regional Office for Europe (‎Copenhagen : WHO Regional Office for Europe, 2000)‎ ...
It has been said that the 60s were the era of free love, hope and promise, while the 70s were the decade of excess. (Say what you will about
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... theyd give off colossal blasts of lethal gamma-rays, X-rays and cosmic rays and its perfectly reasonable to expect ... ... Astrophysicists use X-ray fingerprints to study eating habits of giant black holes. By studying the X-rays emitted when ... AP) -- The protective ozone layer in the Arctic that keeps out the suns most damaging rays - ultraviolet radiation - has ... However, light sources which produce short, extreme ultraviolet or x-ray wavelengths often have ... ...
Get your own copy of this Blue-Ray Movie at SwapaDVD.com. If youre not yet a member, your first DVD and membership are free! ... Format: Blu-ray. Number of Discs: 1. SwapaDVD Credits: 2. Total Copies: 0. Members Wishing: 3. See Also:*Risen (DVD + ...
The authors have examined optical constants and predicted reflectivities of candidate surface coatings for whisper gallery mirrors (WGMs) in the extreme ul
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Because Ultraviolet Rays have higher wavelengths than the visual light spectrum. Does that mean that Einsteins wrong, or did I ... My answer is YES to the question, Do Ultraviolet rays travel faster than Light? Please refer: X-rays and gamma rays travel ... Do Ultraviolet rays travel faster than Light?. Because Ultraviolet Rays have higher wavelengths than the visual light spectrum ... Ultraviolet rays are electromagnetic radiation. They travel at the speed of light. Wavelength has absolutely nothing to do with ...
... and discovering that they can produce an ultraviolet emission known as an Elve. ... researchers have observed millisecond pulses of gamma-rays produced by thunderstorms, clarifying the process by which these ... The ASIM data captured high-speed observations of the event in optical, ultraviolet, x-ray and gamma-ray bands, which allowed ... High above the storm clouds, lightning powers gamma-ray flashes and ultraviolet elves. American Association for the ...
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. Moreover, a large power x-ray and/or EUV laser can be built by using multi-liquid edge-shape ... A method and apparatus for producing x-ray and/or extreme ultraviolet (EUV) is described. A liquid edge 2 is electrically ... x-ray microscope and x-ray holography for biomedical sample, x-ray radiography and x-ray holography in nondestructive ...
The action of ultra-violet rays on complement. John Gordon, Arthur Wormall. Biochemical Journal Jan 01, 1928, 22 (4) 909-919; ...
High-energy X-rays from NASAs Nuclear Spectroscopic Telescope Array (NuSTAR) are shown in blue, while low-energy X-rays from ... NuSTAR is typically used to look deeper into space to observe X-rays from supernovas and black holes, but it can also look ... In addition, extreme ultraviolet light from NASAs Solar Dynamics Observatory (SDO) is yellow and red. ... safely at the sun and capture images of its high-energy X-rays. ... Extreme ultraviolet light combined with solar X-rays. By ...
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Get your own copy of this Blue-Ray Movie at SwapaDVD.com. If youre not yet a member, your first DVD and membership are free! ... Blu-ray + Digital Copy + UltraViolet. Director: P. J. Hogan. UR 2013 1hr 56min ... Format: Blu-ray - Widescreen. DVD Release Date: 06/04/2013. Release Year: 2013. Run Time: 1hr 56min. Screens: Widescreen. ...
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  • 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)
  • WHO HQ Library catalog › Results of search for 'su:{Ultraviolet rays. (who.int)
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  • UltraViolet's mission to assist users turning their physical libraries of replicated DVD-ROM and Blu-ray discs into digital ones play a huge role in this equation, but the digital move has never been easy when it comes to the movie industry. (cd-info.com)
  • Causes and effects of stratospheric ozone reduction : an update , a report / prepared by the Committee on Chemistry and Physics of Ozone Depletion and the Committee on Biological Effects of Increased Solar Ultraviolet Radiation, Environmental Studies Board, Commission on Natural Resources, National Research Council. (who.int)
  • This book explores one of the principal means of understanding the solar atmosphere, itsultraviolet and soft X-ray emission. (ucl.ac.uk)
  • 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)
  • A device for the degermination of a fluid by means of UV rays is arranged such that simultaneously produces ozone for the improvement of the degermination effectiveness. (google.com)
  • Ultraviolet radiation : an authoritative scientific review of environmental and health effects of UV, with reference to global ozone layer depletion / published under the joint sponsorship of the United Nations Environment Programme, the International Commission on Non-Ionizing Radiation Protection and the World Health Organization. (who.int)
  • The results help reveal the process by which terrestrial gamma-ray flashes (TGFs) are generated from thunderstorms, which has been debated. (eurekalert.org)
  • 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)
  • The Neil Gehrels Swift Observatory has operated since 2004 and recorded over 1,000 gamma ray bursts. (space.fm)
  • Ultraviolet rays are invisible to the unaided human eye, but have a wide range of physical effects. (wisegeek.com)
  • 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)
  • 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)
  • Ocular ultraviolet effects from 295 nm to 400 nm in the rabbit eye. (epa.gov)
  • Some naturally occurring and synthetic food components, furocoumarins and ultraviolet radiation / this publication represents the views and expert opinions of an IARC Working Group on the Evaluation of the Carcinogenic Risk of Chemicals to Humans which met in Lyon, 15-22 October 1985. (who.int)
  • There is a scale from 1 to 11+ where a higher number means higher UV rays strength and a higher risk of sunburn and skin damage. (ecolifemaster.com)
  • Individuals who are at the odds of getting Sunburn say that it is the ultraviolet rays from our Sun are the cause. (blackseeddiet.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)
  • Scientists use ultraviolet rays for analytic purposes in fields ranging from forensics to astronomy. (wisegeek.com)
  • 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)
  • Consumers will be able to access their content from a list of UltraViolet-compatible devices that will be coming to market this year. (cd-info.com)
  • Both rays can damage the DNA in skin cells directly, so protecting against them with a broad spectrum sunscreen is a vital step toward protecting the health of your skin. (sanovadermatology.com)
  • Broad spectrum refers to the range of ultraviolet radiation the sunscreen's protection is effective against," explains Dr. Adam Mamelak , a board certified Dermatologist and skin cancer specialist at Sanova Dermatology in Austin. (sanovadermatology.com)
  • It's best to look for something that specifies 'Broad Spectrum Protection' if you want to be sure that you're getting protection from both UVA and UVB rays. (sanovadermatology.com)
  • 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)
  • 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)
  • While UVB rays are usually associated with sun burns and thought to have a higher chance of causing skin cancer , UVA rays have also been found to increase the risk of cancer and are the main rays associated with wrinkles and pre-mature aging. (sanovadermatology.com)
  • UVA rays (315-400 nm) age skin cells causing wrinkles and damage their DNA provoking skin cancer incidences. (ecolifemaster.com)
  • 1080p Streaming Awake [Blu-ray] Sexy and suspenseful, Awake turns the disturbingly real phenomenon of 'anesthetic awarene. (blogspot.com)
  • 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)
  • In partnership with Warner Bros. and to announce the arrival of Jack the Giant Slayer released on DVD & Blu-ray on June 18, we are giving one lucky visitor an exclusive Jack the Giant Slayer Combo Pack (Blu-ray + DVD + Ultraviolet) for FREE . (gradly.net)