Results 101 to 110 of about 819,497 (256)
Analysis of natural cis- and trans-polyisoprene mixtures by near-infrared spectrophotometry
, 2000 Natural trans- and cis-polyisoprenes and mixtures of these polymers were analysed by near-infrared spectrophotometry. The relative absorptivity data versus the amount of isomers in synthetic mixtures showed a non-linear behaviour.
Monteiro, EEC +3 more
core +1 more source
Carbon Energy, EarlyView.The CoNi/MoN interface effect induces electron transfer from CoNi species to MoN nanosheets, in which electron‐enriched CoNi/MoN interface captures K+ to form K+‐H2O, facilitating H2O dissociation to provide *H for accelerating hydrogenation steps, while electron‐deficient CoNi nanoparticles enhances the NO3− adsorption and reduces the free energy ...
Xue Chen +8 more
wiley +1 more source
Infrared observations of asteroids from earth and space [PDF]
, 1978 Infrared reflectances at wavelength between 1 and 4 micrometers are used for determining asteroid surface mineralogy, surface composition, diameters, and albedos.
Matson, D. L. +2 more
core
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study proposes a novel, green, and sustainable method for synthesizing magnetic iron oxides from metallurgical copper slag (CS), leveraging its iron content as a valuable resource. Iron was extracted via acid leaching using edible citric acid (ECA), forming a citrate–iron complex (CSL), which was subsequently thermally decomposed at 300°C
Melisa Portilla‐Sangabriel +4 more
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Graphite nanofluids were stabilized using a mixed SDS/Tween 80 surfactant system. The optimized formulation exhibited enhanced colloidal stability, red‐shifted UV–Vis absorption, and improved photothermal conversion under solar irradiation. Achieving stable dispersion of graphite flakes (GFs) in aqueous media remains a critical challenge in developing ...
Ahmad Chehade +3 more
wiley +1 more source
Polarized IR spectrophotometry of acenaphthene
, 2000 Polarized infrared spectrophotometry of acenaphthene and acenaphthene-d10 in stretched polyethylene sheets was used to assign symmetry to vibrational normal modes. B3LYP/6-31G(d) DFT calculations were employed to assist in assignments.
Kennerly, William W.
core +2 more sources
SYNTHESIS OF ETHYL FATTY ALKYL ETHERS FROM COCONUT (Cocos nucifera L.) FATTY ALCOHOLS
Annals of Tropical Research, 1987 Ethyl fatty alkyl ethers were synthesized using coconut fatty alcohols as the starting raw materials. The fatty alcohols were converted into their corresponding bromides which were then made to react with ethanolic potassium hydroxide.
Alice R.M. Acabal, William G. Padolina
doaj
SYNTHESIS AND INVESTIGATION OF THIN TiO2 FILMS, DOPED WITH COPPER NANOPARTICLES
Вестник Северо-Кавказского федерального университета, 2022 Thin films of titanium dioxide, doped with copper nanoparticles, were synthesized by the method of deposition on the rotating substrate. The obtained films were dried at room temperature and at temperature of TiO2 calcination and studied by ellipsometry,
Aleksander Kravtsov +3 more
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Molecules, 2016 The present work describes the synthesis of a series of four novel biologically active 2-amino-5-arylazothiazole disperse dyes containing the sulfa drug nucleus.
Hatem E. Gaffer +2 more
doaj +1 more source
Improving the Sensitivity in Chiral Analysis by Capillary Electrophoresis
ELECTROPHORESIS, EarlyView.Most recent advances for the enhancement of sensitivity in capillary electrophoresis, including off‐line and in‐capillary preconcentration techniques and their combinations, and the use of alternative detection systems to UV–Vis spectrophotometric absorption.
María Castro‐Puyana +2 more
wiley +1 more source