نتایج جستجو برای: contact uv system
تعداد نتایج: 2425611 فیلتر نتایج به سال:
CdSe nanostructures were synthesized by using green chemical route as starch was used as capping agent. XRD, HR-TEM, SEAD, UV and PL studies were made for structural and optical properties of the prepared sample. Film morphology and the thickness measurement of n-CdSe were carried out with AFM analysis. I-V characteristics curve of this junction confirmed the formation of Schottky contact betwe...
Abstract We investigate the X-ray and UV emission from contact binary star KIC 9832227, which was observed with XMM-Newton for one orbital cycle. The is detected an average luminosity of 3.4 × 10 30 erg s −1 . restricted to energies below 3 keV originates a multitemperature plasma temperatures up 1 keV. spectrum has at least two distinct components, cooler, mostly steady component, hotter compo...
The human eye is constantly exposed to sunlight and artificial lighting. Light transmission through the eye is fundamental to its unique biological functions of directing vision and circadian rhythm, and therefore, light absorbed by the eye must be benign. However, exposure to the intense ambient radiation can pose a hazard particularly if the recipient is over 40 years of age. This radiation e...
Trifluralin is one of the most widely used herbicides, being accounted as cause cancer in human. In present research, UV/S2O82? and ZnO/UV processes’ efficiency removal trifluralin was investigated. A lab scale equipped with a UV lamp applied. The parameters were studied, including initial concentration (0.4–1.2 mg/L), contact time (20–60 min), S2O82? ?M), ZnO (50–150 mg/L). remained measured b...
UV irradiation of mice causes a systemic immune alteration that can be detected either by suppression of the immunologic rejection of UV-induced tumors, or by suppression of contact hypersensitivity (CHS). Suppression of these two immunologic responses has similar photobiologic characteristics and in both cases is associated with the generation of antigen-specific suppressor T cells. To identif...
The main objective of this study was to investigate the effectiveness ultraviolet light (UV-C) emitting diodes for decontamination stainless steel food contact surfaces. Listeria monocytogenes (ATCC 19115), Escherichia coli 25922), and Salmonella enterica serovar Typhimurium 700720) were chosen as challenge microorganisms. Target microorganisms subjected UV-C dosages 0, 2, 4, 6, 8 mJ cm −2 at a...
In this paper, the effect of photocatalytic reduction on hydrophilicity of graphene oxide nanosheets is presented. The graphene oxide nanosheets were prepared by oxidation and exfoliation of natural graphite. The prepared samples were exposed to UV irradiation in presence of TiO2 nanoparticles. Raman spectroscopy and atomic force microscopy show that roughness of the surface is increased due to...
The aim of this study was to degrade furfural by a new nanotube system. To degrade some organic pollutants as well as to reduce the amount of furfural which is a well-known pollutant in oil industry, the photocatalytic process along with ultraviolet (UV) irradiation may be employed. In this study, the UV/TiO2/Pd system in which the nanoparticles of palladium doped into the titanium dioxide was ...
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