Radical Scavenging capacity Abstract: In-vitro antioxidant activity of methanolic extract of Rhinacanthus nasutus leaves was determined by DPPH free radical scavenging assay and Reducing Power assays. Ascorbic acid was used as standard and positive control for both the analysis. All the analysis was made with the use of UV-Visible Spectrophotometer. The methanolic extract of Rhinacanthus nasutu...

A systematic study of the attenuation electromagnetic radiation in Nuclear Track Detectors (NTDs) is carried out. The gamma-ray, X-ray, UV, visible, and infrared NTDs are investigated using NaI(Tl) detector, Gas Electron Multiplier (GEM) UV-Vis spectrophotometer, FTIR spectrophotometer respectively. values some important parameters (e.g., optical depth, coefficient, etc.) three commercially ava...

Education 4.0 encourages the development of learning that integrates technology in it. Thereby, it is important to guide students be more creative and innovative. Electronic devices are quite expensive for SMA / SMK level, so teach concepts practice Lambert-Beer law very difficult. Therefore, an alternative needed teaching concept spectroscopy by making a simple spectrophotometer. The spectroph...

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...

New Zn2P2O7, K2ZnP2O7 and KZn1.5P2O7 compounds were synthesized with conventional solid reaction method. The optical properties have been studied by using UV–Visible spectrophotometer. band gaps (Eg) found to be 3.76 eV, 3.39 eV 3.59 respectively. Optical parameters such as refractive index, Cauchy’s conductivity deduced. index fitting in the visible range dispersion (E0 Ed) of these estimated ...

Silver nanoparticles were prepared by microwave irradiation of silver nitrate solution with carboxymethyl chitosan as reducing agent and a stabilizer. The optical properties, morphology and structure were characterized using UV–Visible spectrophotometer, transmission electron microscope (TEM) and X-ray diffraction (XRD). Appearance of surface plasmon band at 413 nm indicated the formation of si...