Results 61 to 70 of about 333,648 (309)
Ciência Florestal, 2008 The objective of this work was to compare the performance of two analytical techniques, flame atomic absorption spectroscopy (FAAS) and ultraviolet-visible spectroscopy (UV-VIS), in the determination of the silica content in lignocellulosic materials ...
Laécio Carneiro Rodrigues +1 more
doaj
Ti+4 determination in Ziegler–Natta polymerization catalysts via UV‒vis spectroscopy method [PDF]
Polyolefins JournalThe determination of Ti+4 in Ziegler–Natta catalysts is highly relevant for industrial plants that use Ziegler–Natta (ZN) catalysts based on TiCl4 as a source of titanium.
Jonas Biagini, Joao Henrique dos Santos
doaj +1 more source
Advanced Engineering Materials, EarlyView.ZnS‐MXene‐TiO2 nanocomposite heterojunction for photocatalytic decomposition of this methylene blue dye (MB) greatly improves light absorption, charge separation, and active site area. Two‐dimensional MXene forms nanocomposites by easily combining them with 0D (quantum dots), 1D (tube and wire), 2D (plane and sheet), and 3D (particle and lamellar ...
Latiful Kabir +7 more
wiley +1 more source
REFLECTANCE UV-VIS AND UV RESONANCE RAMAN SPECTROSCOPY IN CHARACTERIZATION OF KRAFT PULPS
BioResources, 2009 Reflectance UV-Vis spectroscopy and UV resonance Raman (UVRR) spectroscopy are both nondestructive techniques that are applicable to study trace concentrations of lignin in-situ.
Anni Lähdetie +3 more
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Chemosensors, 2022 In recent years, methodologies based on spectral analysis, using ultraviolet–visible (UV-Vis) radiation, have experienced an amazing development and have been widely applied in various fields such as agricultural, food, pharmaceutical, and environmental ...
Rocío Ríos-Reina, Silvana M. Azcarate
doaj +1 more source
Synthesis and Characterization of Coated Gold Nanoparticles with Embedded SERS Tags [PDF]
, 2017 Gold nanoparticles were prepared with the potential to operate as drug delivery vehicles. Surface-enhanced Raman spectroscopy (SERS) is of particular importance as an optical bioimaging technique due to its ability to allow deep and high-resolution ...
Gilbert, Brian, Smith, Allison B.
core +1 more source
Spectroscopic and Computational Studies of Matrix-Isolated iso-CXBr3 (X=F,Cl,Br): Structure, Properties, and Photochemistry of Substituted Iso-Tribromomethanes [PDF]
, 2012 Iso-polyhalomethanes are important reactive intermediates in the condensed and gas-phase chemistry of halomethanes. Building upon our recent study of iso-bromoform, in this work the substituted iso-tribromomethanes (iso-CXBr3; X = F, Cl, Br) were ...
Esselman, Brian J. +4 more
core +2 more sources
UV–VIS spectroscopy of 2,4,6-trinitrotoluene-hydroxide reaction [PDF]
Chemosphere, 2002 Contamination of groundwater, surface water and soil by explosives has occurred at military sites throughout the world as a result of manufacture of explosive compounds, assembly of munitions, and deployment of explosives containing devices.
Deborah R, Felt +2 more
openaire +2 more sources
Advanced Engineering Materials, EarlyView.This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff +9 more
wiley +1 more source
AIP Advances, 2018 We have investigated the chemical forms of palladium (Pd) ion in nitric acid solution, using XAFS/UV-vis spectroscopic and first-principles methods in order to develop the disposal of high-level radioactive nuclear liquid wastes (HLLW: radioactive metal ...
Shinta Watanabe +8 more
doaj +1 more source