نتایج جستجو برای: uv vis spectrophotometer

تعداد نتایج: 83388  

Journal: :Formatif: Jurnal Ilmiah Pendidikan MIPA 2023

<p><span data-preserver-spaces="true">The demands of 21st Century learning are now in the Industrial Revolution Era 4.0 with 4C characters. Educators must develop their creativity to improve quality so that students can be more creative learning. </span><em>Instrumental Analytical Chemistry</em><span data-preserver-spaces="true"> is a course studies modern in...

2011
Ming-Liang Chen Won-Chun Oh

Carbon nanotube-cadmium selenide (CNT-CdSe) composite was synthesized by a facile hydrothermal method derived from multi-walled carbon nanotubes as a stating material. The as-prepared products were characterized by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis, transmission electron microscopy (TEM), and UV-vis diffuse reflectance spectrophotometer. The a...

Journal: :European Journal of Natural Sciences and Medicine 2021

Abstract The most medically representative plant in the Apocynaceae family is Vinca minor . a perennial, herbaceous plant, commonly known as Saschiu. In present research we aimed to isolate indole compounds from L. and carry out some physico-chemical studies on these compounds: UV-VIS spectroscopy determination of polyphenols content using Folin-Ciocâlteu method. spectrophotometric study alcoho...

2016
Vahid Noroozi Karbasdehi Sina Dobaradaran Abdolhamid Esmaili Roghayeh Mirahmadi Fatemeh Faraji Ghasemi Mozhgan Keshtkar

In this data article, we evaluated the daily fluoride contents in 20 household desalinators working by reverse osmosis (RO) process in Bushehr, Iran. The concentration levels of fluoride in inlet and outlet waters were determined by the standard SPADNS method using a spectrophotometer (M501 Single Beam Scanning UV/VIS, UK). The fluoride content in outlet waters were compared with EPA and WHO gu...

2016
Nitin Kumar Sharma Rakesh Kumar Ameta Man Singh

The Pd (II) complexes with a series of halosubstituted benzylamine ligands (BLs) have been synthesized and characterized with different spectroscopic technique such as FTIR, UV/Vis, LCMS, (1)H, and (13)C NMR. Their molecular sustainability in different solvents such as DMSO, DMSO : H2O, and DMSO : PBS at physiological condition (pH 7.2) was determined by UV/Vis spectrophotometer. The in vitro a...

2001
Robert J. Hondal Bradley L. Nilsson Ronald T. Raines

Instruments. NMR spectra were obtained with Bruker AC-300 and Varian UNITY-500 spectrometers. Mass spectra were obtained with Perkin Elmer Sciex API 365 electrospray ionization (ESI) and Bruker Biflex III matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) instruments at the University of Wisconsin Biotechnology Center. Ultraviolet and visible absorbance was recorded with a C...

Hossein Salavati, Marzieh Mousavi-Dashti Mousavi-Dashti

In this work, H3PW12O40 (PPT) and nano-sized titania supported on urea formaldehyde (UF) resinwas prepared via an impregnation method. The prepared sample was characterized by X-raydiffraction (XRD), UV-Vis spectrophotometer, Fourier transform infrared spectroscopy (FT-IR),scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). The photocatalyt...

2014
Birendra Kumar Bindhani Ashok Kumar Panigrahi

In this study, a novel technique for biosynthesizing of gold nanoparticles (GNPs) using Withania somnifera as reductants and stabilizers is reported. Biosynthesis of anisotropic gold nanoparticles using ethanolic extract of Withania somnifera leaf and their potential as IR blockers has been demonstrated. The phenolic groups (–OH) residue was identified as the active functional group for gold io...

2013
Guillaume Pompidor Florian S. N. Dworkowski Vincent Thominet Clemens Schulze-Briese Martin R. Fuchs

The combination of X-ray diffraction experiments with optical methods such as Raman, UV/Vis absorption and fluorescence spectroscopy greatly enhances and complements the specificity of the obtained information. The upgraded version of the in situ on-axis micro-spectrophotometer, MS2, at the macromolecular crystallography beamline X10SA of the Swiss Light Source is presented. The instrument newl...

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