BACKGROUND AND OBJECTIVES Standard or investigative immunosuppressive therapies for cutaneous chronic graft-versus-host disease (GVHD) may prove not only ineffective but also cause serious adverse effects. Repeated exposure of the skin to ultraviolet radiation in the wavelength range 340-400 nm (so-called ultraviolet A1) was recently reported to have a strong local (intracutaneous) immunomodula...

Several perfluoro effects are observed on the excited states of pBQ, as probed by high-resolution vacuum ultraviolet photoabsorption spectroscopy and TDDFT calculations for TFBQ.

The addition of the enzyme catalase to cells of certain strains of E8cherichia coli strain K 12, after exposure to ultraviolet light (2537A), has been found to increase the survival ratio (Monod et al., 1949; Latarjet et al., 1954; Miletic, 1954; Teti, 1954). Catalase has also been found to counteract the biological effects produced in Micrococcus pyogenes var. aureus, either by ultraviolet irr...

background: light is an important and adjustable physical factor in the job environment.this study aimed to determine the intensity of natural and mixed light and also the level of ultraviolet radiation in libraries and computer sites of ilam universities in spring 2011.   methods: in this cross-sectional study, 10 libraries, 16 study saloons, and 7 computer sites were selected. luminosity asse...

Azelaic acid (AzA), a nine-carbon dicarboxylic acid, is an agent for the topical treatment of acne. It has also been shown to be effective in rosacea; however, the mechanism of action has not been clarified. Because inflammation is a common feature of both conditions, we investigated the effects of azelaic acid on the inflammatory response of normal human keratinocytes to ultraviolet B light, w...

Introduction: Solar radiation has a major role in design, utilization, development, and planning of solar energy. The most important source of natural ultraviolet radiation is the sun, which has an important role in many biologic processes. Some of these processes are useful, like the production of vitamin D in the body, or curing rickets, and some of them are not, such as ski...

We determined the effects of noninfective reovirus components on cellular deoxyribonucleic acid (DNA) synthesis. Reovirus inactivated by ultraviolet light inhibited cellular DNA synthesis, whereas reovirus cores and empty capsids did not. Both cores and empty capsids were adsorbed to cells. Adenine-rich ribonucleic acid (RNA) from reovirus, adsorbed to cells in the presence of diethyl-aminoethy...

The AdS/CFT correspondence of elementary string theory has been recently suggested as a “microscopic” approach to QCD string theory in various dimensions. We use the microscopic theory to show that the ultraviolet regime on the string world-sheet is mapped to the ultraviolet effects in QCD. In the case of QCD2, a world-sheet path integral representation of QCD strings is known, in terms of a to...

Rapidly-frozen hydrated (cryopreserved) specimens combined with cryo-scanning x-ray fluorescence microscopy provide an ideal approach for investigating elemental distributions in biological cells and tissues. However, because cryopreservation does not deactivate potentially infectious agents associated with Risk Group 2 biological materials, one must be concerned with contamination of expensive...

Phototherapy is the use of non-ionizing radiation, primarily in the ultraviolet spectrum, to treat disease. In dermatology, ultraviolet (UV) phototherapy remains an established, lower cost, and often preferred option for many common skin conditions, despite the introduction of newer potent biologics. This article introduces a principal therapeutic modality in the treatment of psoriasis, atopic ...