cupric oxide nanostructures were synthesized via a simple reaction between copper nitrate and sodium hydroxide using a sonochemical-assisted method. the synthesized cuo was then characterized using x-ray diffraction, scanning electron microscopy, transmission electron microscopy, fourier transform infrared, ultraviolet-visible and photoluminescence spectroscopy. our studies show that the cuo na...

In this research project, the nitrito nitro isomerization of [Co (NH3)5No2]F2 complex has been studied. Isomerization of this complex in the solid state follows a first order kinetics. The rate of isomerization at different temperatures was determined using a Fourier Transform Lnfrared Spectrophotometer. ? and ? are calculated at 298 K. The infrared, visible and ultraviolet spectra of th...

In this study, the photocatalytic degradation of azo-dye acid orange 10 was investigated using titanium dioxide catalyst suspension, irradiation with ultraviolet-C lamp and bismuth vanadate under visible light of light-emitting diode lamp. Response surface methodology was successfully employed to optimize the treatment of acid orange 10 dye and assess the interactive terms of four factors. The ...

In this research, N-doped TiO2 (N/TiO2) nanoparticles have been synthesized by a sol-gel method. N/TiO2 nanoparticle has been coated with Ag metal by photochemical method. Triethylamine, N(CH3CH2)3, have been used as precursors of Nitrogen, titanium tetraiso-propoxide (TTIP), Ti[OCH(CH3)2]4, used as precursors of titanium and Ag(NO3)2 used as precursors of Silver in synthesis of these nanoparti...

background: corneal collagen cross-linking with riboflavin, also known as collagen cross-linking (cxl), involves the application of riboflavin solution to the eye that is activated by illumination with ultraviolet a (uva) light. we survey here the topographic corneal changes one year after cxl in patients with corneal keratoconus. materials and methods: this prospective randomized clinical tria...

Chem. Abstr. Serv. Reg. No.: 298-81-7 Chem. Abstr. Name: 9-Methoxy-7Hfuro[3,2-g][1]benzopyran-7-one IUPAC Systematic Name: 9-Methoxyfuro[3,2-g]chromen-7-one Synonyms: 5-Benzofuranacrylic acid, 6-hydroxy-7-methoxy-, δ-lactone; Meladinine; 8-methoxy-6,7-furanocoumarin; 8-methoxypsoralen; 8-methoxy[furano3′,2′:6,7-coumarin]; 8-MOP; 8-MP; Oxsoralen; Puvasoralen; Uvadex Description: Silky needles or...

Chem. Abstr. Serv. Reg. No.: 298-81-7 Chem. Abstr. Name: 9-Methoxy-7Hfuro[3,2-g][1]benzopyran-7-one IUPAC Systematic Name: 9-Methoxyfuro[3,2-g]chromen-7-one Synonyms: 5-Benzofuranacrylic acid, 6-hydroxy-7-methoxy-, δ-lactone; Meladinine; 8-methoxy-6,7-furanocoumarin; 8-methoxypsoralen; 8-methoxy[furano3′,2′:6,7-coumarin]; 8-MOP; 8-MP; Oxsoralen; Puvasoralen; Uvadex Description: Silky needles or...

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Based on an analysis of all low resolution spectra of HD 89353 (HR 4049) obtained with the International Ultraviolet Explorer (IUE) over several years and uniformly reprocessed, we report on large ultraviolet variations for this star whose amplitude increases towards long wavelengths. Ultraviolet maximum and minimum occur respectively at phase 0.52 and 0.92 of Waelkens et al. (1991) ephemeris w...

Psoriasis is characterized by alterations in both the epidermis and dermis of the skin. Epidermal keratinocytes display marked proliferative activation and differentiate along an "alternate" or "regenerative" pathway, while the dermis becomes infiltrated with leukocytes, particularly interleukin 2 (IL-2) receptor-bearing "activated" T cells. Psoralens, administered by the oral route, have thera...