نتایج جستجو برای: visible spectrophotometer source
تعداد نتایج: 494382 فیلتر نتایج به سال:
-Forensic science laboratories in Maharashtra state regularly receiving number of duplicate foreign liquor samples under section 420 of IPC Act. The study was under taken to confirm these samples as per specifications of the manufacturer. It was found that illegal syndicates adjusted the percentage of alcohol up to standard specific value and used substandard coloring, flavoring and essential o...
BACKGROUND Due to rapid advances in modern technologies such as telecommunication technology, the world has witnessed an exponential growth in the use of digital handheld devices (e.g. smartphones and tablets). This drastic growth has resulted in increased global concerns about the safety of these devices. Smartphones, tablets, laptops, and other digital screens emit high levels of short-wavele...
A novel artificial peroxidase (AP) with highly catalytic efficiency was designed using hexadecyl trimethyl ammonium bromide (CTAB, 3 mM) nano-micelles and bovine heart cytochrome c (Cyt c, 0.5 µM) in 100 mM, pH 8.0 phosphate buffer at 25°C. The catalytic rate (kcat) and Michaelis-Menten (Km) of the AP were determined to be 0.311 ± 0.013 s(-1) and 8.64 ± 0.6 µM. The catalytic efficiency was 0.03...
Present study reports the biogenesis of silver nanoparticles from the leaves of Cardiospermum halicacabum L. and their characterization. C. halicacabum has been used in traditional medicines but so far it has not been tested for synthesis of silver nanoparticles (AgNPs). The aqueous silver ions exposed to the herbal extract, which were reduced and the nanoparticles were synthesized. The presenc...
Sorption characteristics of Co which is rather troublesome nuclide from the aspect of low level radioactive waste disposal was studied. By use of ultraviolet-visible spectrophotometer, coexistence of ionic and colloidal cobalts was verified in aqueous solution with pH>7. Column test was carried out with pH=8.75 and it showed that breakthrough curve obtained consists of two types of curves due t...
A semiorganic crystal of zinc thiosemicarbazide sulfate (ZTSCS) has been grown aqueous solution by slow evaporation technique at room temperature. The material was subjected to various characterization techniques such as UV-Visible, non linear optical test, photoluminescence study, elemental analysis and Fourier transform infrared (FTIR) techniques. Cut off wavelength and band gap of the grown ...
Vanadium supported on highly ordered nanoporous silica (VOxLUS-1) was synthesized and characterized by XRD, Nitrogen adsorption desorption isotherms and UV-visible spectrophotometer. Direct oxidation of benzene to phenol in liquid phase by H2O2 peroxide was examined by using various solvents (methanol, acetone, acetic acid, acetonitryl). The maximum yield (25%) and selectivity (73%) of the phen...
The potential of visible and near infrared (Vis/NIR) spectroscopy was investigated for discriminating the varieties of Nanfeng mandarin fruit nondestructively. The spectra were collected by a spectrophotometer in the wavelength range of 600–1040 nm. Relationship between the spectra and Nafeng mandarin varieties was established using principal component analysis (PCA), supervised independent mod...
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