Results 71 to 80 of about 18,093 (183)

Precipitation of niobic acid from potassium niobate in sulphuric acid solution: A route to niobium oxide

The Canadian Journal of Chemical Engineering, EarlyView.
Graphical abstract illustrating the niobic acid precipitation process applied and the product obtained. Abstract This study investigates the precipitation of niobic acid (Nb2O5.nH2O) from potassium niobate solution with addition of sulphuric acid, and its subsequent thermal conversion into niobium oxide (Nb2O5). Thermodynamic modelling with PHREEQC and
Cássia R. Souza, Gabriela C. Silva, Isabel P. Silva, Frederico M. Penha, Sônia D. F. Rocha   +4 more
wiley   +1 more source

Synergetic effects of collisions, turbulence and sawtooth crashes on impurity transport [PDF]

, 2016
This paper investigates the interplay of neoclassical, turbulent and MHD processes, which are simultaneously at play when contributing to impurity transport. It is shown that these contributions are not additive, as assumed sometimes.
Ahn, Jae-H, Bourdelle, C, Breton, S, Dif-Pradalier, Guilhem, Donnel, P, Esteve, D, Février, O, Garbet, Xavier, Ghendrih, Philippe, Grandgirard, Virginie, Guirlet, R, Latu, Guillaume, Luciani, J.F., Lütjens, H, Maget, P, Marx, A, Nicolas, T, Sarazin, Yanick, Smolyakov, A   +18 more
core   +1 more source

Ultra‐Fast and Economical Pre‐Breakdown Electrochemical Synthesis of Intrinsically Conductive Polymer Suspension for Production of Safe Lithium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This paper presents a breakthrough pre‐breakdown electrochemical method for synthesizing polyNiMeOSalen suspensions, achieving an 83% yield and nanoscale dispersion ($1500/kg) and environmental impact (1.42 kg CO2eq/kg). We report a novel pre‐breakdown electrochemical synthesis method for producing polyNiMeOSalen suspensions with exceptional ...
Evgenii Beletskii, Valentin Romanovski, Mikhail Pinchuk, Vadim Snetov, Alexey Volkov, Peixia Yang, Yurii K. Gun'ko   +6 more
wiley   +1 more source

Full orbit simulations of collisional impurity transport in spherical tokamak plasmas with strongly-sheared electric fields

, 2011
The collisional dynamics of test impurity ions in spherical tokamak plasmas with strongly-sheared radial electric fields is investigated by means of a test particle full orbit simulation code.
McClements, K. G., Verwichte, E., Wrench, C. G.   +2 more
core  

Bio‐Inspired Ordered WO3 Nano‐Helixes Enable Multi‐Band Electrochromic Smart Windows with Ultrafast Switching and Robust Cyclability

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Biomimetic ordered nano‐helix WO3 films enable multi‐band electrochromic photothermal management across the visible, near‐infrared, mid‐ and long‐wave infrared spectra, with ultrafast switching (<3 s) and robust durability (>10 000 cycles). These findings establish new paradigms for next‐generation photothermal management systems and energy‐efficient ...
Pan Li, Ying Lv, Xin You, Hangyu Ma, Tienan Wang, Yue Shen, Xiaotian Li, Xiaoyang Guo, Guofa Cai, Xingyuan Liu   +9 more
wiley   +1 more source

Stabilization of Tungsten-Uranium Dioxide Composites Under Thermal Cycling Conditions [PDF]

Uranium losses during thermal cycling of tungsten - uranium dioxide composites to 2500 C in flowing purified hydrogen for specimens initially containing 35 volume percent uranium dioxide were reduced by the use of thorium dioxide, calcium oxide, or ...
Gedwill, Michael A., Gluyas, Richard E.
core   +1 more source

Micropatterned Scintillator Films With Engineered Cs3Cu2I5/CsCu2I3 Nanocrystals for Low‐Crosstalk X‐Ray Imaging at Clinically Relevant Tube Voltage

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Polyethylene glycol‐coated, lead‐free CsCu2I3 nanocrystal scintillator films achieve superior X‐ray imaging resolution over unpatterned films at 80 kVp by reducing crosstalk through lithographic micropatterning and optimized thickness control. The spatial resolution of X‐ray imaging is often limited by radioluminescence scattering, which is exacerbated
Atanu Jana, Sunjung Park, Deblina Das, Sourav Mal, Seoyoung Kwak, Sungwoo Kim, Sangeun Cho   +6 more
wiley   +1 more source

Synthesis of Sulfur Enriched Cyclohexenes via the Tungsten‐Promoted Dearomatization of a Phenyl Sulfone

European Journal of Organic Chemistry, EarlyView.
A method for synthesizing sulfur‐substituted cyclohexenes is reportedthat leverages the η2‐coordination of a phenyl sulfone to [WTp(NO)(PMe3)] (Tp = trispyrazolylborate). Three sequential protonation and nucleophilic additions to the bound arene, followed by oxidative decomplexation, affords functionalized cyclohexenes bearing sp3‐ and sulfur‐enriched ...
Daniel J. Siela, Matthew C. McGraw, Diane A. Dickie, W. Dean Harman   +3 more
wiley   +1 more source

Unlocking the Potential of Carbon Nitride (CxNy) Electrocatalysts in Hydrogen Evolution, Oxygen Evolution and Overall Water Splitting

Exploration, EarlyView.
Electrocatalytic water splitting with carbon nitride (CxNy) materials has gained attention due to their synthesis, structure, and robust application. Among various CxNy types, g‐C3N4 is the most stable allotrope and extensively researched. This review explores recent advances in HER, OER, and OWS, focusing on defect engineering, structural engineering,
Zi Wei Tan, Neil Felicio Agesta, Ryan Yow Zhong Yeo, Joel Jie Foo, Wee‐Jun Ong   +4 more
wiley   +1 more source

Mid‐Infrared Integrated Photonics: Material Platforms and Emerging Applications

Laser &Photonics Reviews, EarlyView.
Mid‐infrared (MIR) integrated photonics enables advanced chemical and biological sensing through the unique absorption features of molecules in the 2–20 µm range. This review highlights recent material advances such as chalcogenide glasses, silicon, and graphene and explores MIR applications in environmental monitoring, medical diagnostics ...
Muhammad Ali Butt, Daniel Pastor Abellán, Ryszard Piramidowicz   +2 more
wiley   +1 more source