نتایج جستجو برای: visible spectrophotometry
تعداد نتایج: 84741 فیلتر نتایج به سال:
In this paper, we present our preliminary studies into naphthoquinones as novel reagents for the detection of latent fingermarks on paper. Latent fingermarks deposited on paper substrates were treated with solutions of selected naphthoquinones in ethyl acetate/HFE-7100, with subsequent heating. The selected compounds were 1,4-dihydroxy-2-naphthoic acid, 1,2-naphthoquinone-4-sulfonate, 2-methoxy...
High-precision spectrophotometry is highly desirable in detecting and characterizing close-in extrasolar planets to learn about their makeup and temperature. For such a goal, a modest-size telescope with a simple low-resolution spectroscopic instrument is potentially as good or better than a complex general purpose spec-trograph since calibration and removal of systematic errors is expected to ...
The nanostructured nickel oxide thin films were prepared by dip coating sol – gel method. Three methods (drying with oven, IR and microwave) have used for drying the films. The effect of drying method on the optical, molecular, electrical, structural, and morphology properties of the films were studied by Uv-Visible spectrophotometry, Fourier Transform Infrared spectroscopy, Hall effect, X-ray ...
This study aimed to analyze the chemical profile and evaluate biological activities of aqueous extract H. Scoparia, an endemic plant found in Southeastern Algeria. The was subjected phytochemical screening, RP-HPLC, FT-IR analysis. anti-inflammatory activity examined using protein denaturation method, photoprotective evaluated UV-Visible spectrophotometry. antioxidant assessed ABTS, DPPH, FRAP ...
Background and Objectives: Actinobacteria efficiently can produce different nanoparticles with different biological properties due to their ability to produce secondary metabolites. The aim of present study, isolation and screening of gold nanoparticles via producing actinobacteria from the soil were studied and their antibacterial activities was evaluate. Methods: In this study, after iso...
Objectives Pyocyanin is a blue-greenish redox-active pigment, produced by Pseudomonas aeruginosa, with a wide range of biological and biotechnological applications. Pyocyanin biosynthesis is regulated by the quorum-sensing (QS) system in which the expression of QS genes and QS-controlled virulence genes may be affected by serum as a complex medium. In the current study, effects of adult bovine ...
A simple indirect spectrophotometric method for determination of mebendazol in pure and pharmaceutical formulation was presented this study. UV-Visible spectrophotometry using the optimal conditions developed mebendazole drug different preparation samples. The is based on oxidation by n-bromosuccinimide with hydrochloric acid left amount oxidizing agent determined reaction tartarazine absorbanc...
Introduction: Applying of a new indicator in food packaging can be effective to inform consumers about the freshness and quality of the products. Materials and Methods: In the current study, a new milk freshness label was investigated containing beetroot color and multi layers of polystyrene. The label characteristics were investigated by estimating color number, release test, and scanning ele...
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