Results 91 to 100 of about 819,497 (252)

Regulating Interfacial Water Structure on CoNi/MoN Heterostructures Boosts Electrocatalytic Nitrate Reduction to Ammonia

open access: yesCarbon 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

Gallstone analysis by infrared spectrophotometry

open access: yes, 1982
의학과/석사[한글] 담석 분석은 1863년 Thudichum이 최초로 담석의 외형적상태에 따라 분류한 이레 여러번의 수정을 거쳐왔다. 담석의 분석은 그 성분이 담즙색소와 무기질을 함유하고 있기 때문에 어려운 점이 많다. 분석방법으로는 Stepwise solvent extraction method, X-ray diffr action method, thin layer chromatography, 그리고 Infrared spectrophotometry ...
이성공
core  

Analysis of natural cis- and trans-polyisoprene mixtures by near-infrared spectrophotometry

open access: yes, 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

Green and sustainable synthesis of magnetite from copper slag via citrate complexation for methylene blue dye removal from water

open access: yesThe 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

Infrared observations of asteroids from earth and space [PDF]

open access: yes, 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  

Tuning Colloidal Stability and Photothermal Conversion Efficiency of Graphite Nanofluids via Anionic‐Nonionic Surfactant Engineering

open access: yesENERGY &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

open access: yes, 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

Improving the Sensitivity in Chiral Analysis by Capillary Electrophoresis

open access: yesELECTROPHORESIS, 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

Near-infrared laser-mediated drug release and antibacterial activity of gold nanorod–sputtered titania nanotubes

open access: yesJournal of Tissue Engineering, 2018
The infection control of implants is one of the hot issues in the field of medicine and dentistry. In this study, we prepared gold nanorod–sputtered titania nanotubes on titanium surface, which is the main component of implant material, and aimed to ...
Kyoung-Suk Moon   +3 more
doaj   +1 more source

Sol–gel synthesis of ZnO@SiC heterojunctions from photovoltaic waste for enhanced paracetamol photodegradation

open access: yesEnvironmental Progress &Sustainable Energy, EarlyView.
Abstract Exponential growth in photovoltaic energy production has created a critical environmental challenge: managing silicon carbide (SiC) waste from wafer cutting processes. This study addresses this challenge by transforming photovoltaic waste into high‐value photocatalytic materials.
Hajer Aloulou   +3 more
wiley   +1 more source

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