نتایج جستجو برای: absorptivity
تعداد نتایج: 1023 فیلتر نتایج به سال:
A simple, sensitive, rapid, accurate and precise spectrophotometric method has been developed for the estimation of bicalutamide in bulk and pharmaceutical dosage forms. Bicalutamide shows maximum absorbance at 272 nm with molar absorptivity of 2.3399×10(4) l/mol/cm. Beer's law was obeyed in the concentration range of 1.5-18 μg/ml. The limit of detection and limit of quantification were found t...
Email: [email protected] ABSTRACT: Background: A new, simple and sensitive spectrphotometric method in Ultraviolet region has been developed for the determination of Celecoxib in bulk and in pharmaceutical formulations. Method: Celecoxib, exhibits absorption maxima at 255 nm with apparent molar absorptivity 1.7848 X 10 L/mol.cm in chloroform. Beer’s law was found to be obeyed in the concentratio...
This paper presents a method for the determination of phenylephrine hydrochloride in pharmaceuticals by spectrophotometric flow injection analysis exploiting the reaction with potassium ferricyanide and 4-aminoantipyrine, which leads to the formation of a condensation product with strong absorptivity at 500 nm. The linear dynamic range was between 0.95 and 9 mg/L, with a limit of detection of 0...
Laser processing of pure Cu is often challenging because Cu's very low absorptivity to most laser beams, and this difficulty applicable the recently developed powder bed fusion (LPBF) additive manufacturing (AM). How realize high-quality LPBF forming urgently pursued maximize its advanced potential in directly making various parts. Herein, two approaches have been applied, individually or simul...
Abstract The aim of this study is to estimate the impact EAC-1A lunar regolith simulant contamination on thermal absorption properties a metallic surface. Masses ranging from 1.0 mg 1016 European Astronaut Centre 1 (EAC-1A) were placed chemically polished aluminium disc and total hemispherical absorptivity (α TH ) was measured at temperatures T A itself between 5 K 100 K. Temperature R radiatio...
Abstract The shape of the laser beam used for fusion cutting significantly influences geometry both front and kerf. angle in turn impacts local absorptivity, while width kerf defines amount material, which has to be molten. kerf’s therefore determines maximum possible speed at a successful cut is feasible with given available power. kerf, can estimated from simple model considering conservation...
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