BACKGROUND Studies suggest that low levels of vitamin D may be associated with prostate cancer, and darker skin reduces the body's ability to generate vitamin D from sunshine. The impact of sunshine on racial disparities in prostate cancer incidence and mortality is unknown. METHODS Using the Surveillance, Epidemiology, and End Results program database, the authors calculated age-adjusted pro...

Time shaping of ultrashort UV pulses has been performed using a specially designed acoustooptic programmable dispersive filter in KDP material. A time window shaping up to 4 ps has been obtained on the 250–410 nm range. Characterization by difference frequency mixing as well as two-photon absorption in diamond has been used.

We investigate the properties of the extinction curve in the rest-frame UV for a sample of 34 UV-luminous galaxies at 2 < z < 2.5, selected from the FORS Deep Field (FDF) spectroscopic survey. A new parametric description of the restframe UV spectral energy distribution is adopted; its sensitivity to properties of the stellar populations or of dust attenuation is established with the use of mod...

the method has been developed and validated for the determination of hydroquinone in liposomal formulation. the samples were dissolved in methanol and evaluated in 293 nm. the validation parameters such as linearity, accuracy, precision, specificity, limit of detection (lod) and limit of quantitation (loq) were determined. the calibration curve was linear in 1-50 µg /ml range of hydroquinone an...

in this paper the photocatalytic degradation of the anionic surfactant, linear alkylbenzene sulfonicacid (labsa) was investigated using uv radiation in the presence of tio2. our findingsdemonstrate that various parameters exert their individual influence on the photocatalytic degradationof surfactant in wastewaters. the mentioned parameters have been categorized as follow: the initialph of the ...

A simple, rapid, sensitive and cost effective difference spectrophotometric method have been developed for the determination of Febuxostat in its tablet dosage form. The method is based on the induced spectral changes upon changing the pH of the medium that differ in their UV spectra. Difference spectrum, obtained by keeping Febuxostat in 0.1N NaOH in reference cell and same in 0.1N HCl in samp...

We compile optical and UV spectra of a sample of ‘typical’ short period black hole X-ray transients in outburst. We also survey determinations of interstellar extinction and distance in order to deredden spectra and compare absolute fluxes. Hence we perform a comparative study of the broad-band spectral energy distributions (SED). We find that given such a homogeneous sample of typical sources,...