background: given the increasing importance of suspended particles and reporting weather conditions in the amount of ultraviolet radiation in many countries, in this study, the data of the maximum amounts of pollution by suspended particles with the size of 10, 2.5 and1 microns (pm10, pm2.5, pm1) which were reported in 1-hour time-series and global ultraviolet index (uvi) were used to predict t...

cerium oxide (ceria) nano particle, as photodegradation prevention agent was studied in water-based polyurethane clear coat  systems. polyurethane coatings show superior weathering resistance compared with acrylic melamine systems. however, any chemical change has detrimental effects on the property profile of pu coatings. coatings containing various amounts of cerium oxide nanoparticles were p...

2) Stern, Robert, S., et al. (1998) “Oral Psoralen and Ultraviolet-A Light (PUVA) Treatment of Psoriasis and Persistent Risk of Nonmelanoma Skin Cancer”: This cohort study of 1,380 psoriasis patients provides follow-up to previously published data by the same authors. With the additional years of follow-up, the study demonstrates that coal tar in combination with ultraviolet-B (UVB) treatments ...

Following recent results from the Super-Kamiokande experiment which indicate that neutrinos may have finite masses and provide at least part of the dark matter in the Universe, we reexamine the decaying neutrino hypothesis of Sciama, including for the first time the effects of absorption by intergalactic dust. We consider several dust models, including one designed to optimize ultraviolet extin...

as chelesterol lowering effects, antioxidant effeets, anti-tumor effects, cardioprotective effects, and protection against ultraviolet rays. However, reports of the effects of GSPE on bone are rare. We performed a mechanical analysis ef the effect of GSPE on the interior structure of rat mandibular bone in the growth period, using three-dimensional peripheral quantitative computed tomography (p...

Raman spectroscopy has long been used for the chemical analysis of organic matter, including natural products, using excitation wavelengths in the visible, infrared, or ultraviolet portions of the spectrum. The use of ultraviolet resonance Raman spectroscopy (UVRR) to study bulk samples of plant tissue has typically been carried out by rotating homogeneous macro-samples beneath the laser beam i...

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Vitiligo is a common and chronic disease with a great impact on patients' quality of life. Phototherapy with narrowband ultraviolet B radiation and excimer laser are two treatment modalities that are used increasingly for the management of the disease with variable results. In this article, we review the efficacy, adverse effects, and possible mechanisms of action of narrowband ultraviolet B an...

Double mutations to azide resistance and to bacteriophage T5 resistance of genes separated by more than 50 kilobases were induced in Escherichia coli WP2s in chemostat cultures by exposure to a single low dose of ultraviolet light. Frequencies of induced double mutations were three orders of magnitude greater than would be predicted by chance. Reversions from azide resistance and phage resistan...

Liposomes containing the immunomodulator muramyltripeptide phosphatidylethanolamine (MTP-PE) or free saline were injected i.v. into BALB/c mice with autochthonous skin cancers induced by chronic exposure to ultraviolet irradiation. Treatment with liposomes containing MTP-PE produced significant retardation in the growth of the primary autochthonous skin cancers and significantly prolonged survi...