Results 121 to 130 of about 880,643 (376)

Confinement effects and acid strength in zeolites

Nature Communications, 2020
Chemical reactivity and sorption in zeolites are coupled to confinement and—to a lesser extent—to the acid strength of Brønsted acid sites (BAS). In presence of water the zeolite Brønsted acid sites eventually convert into hydronium ions.
E. Grifoni, G. Piccini, J. Lercher, V. Glezakou, R. Rousseau, M. Parrinello   +5 more
semanticscholar   +1 more source

Bifurcation from L-mode to internal transport barrier triggered by a magnetic island in tokamak plasmas

Nuclear Fusion
Magnetic islands are believed to be responsible for triggering the internal transport barrier (ITB) around the rational surface and hence improves confinement in magnetic confinement fusion plasma, for more than two decades.
Feiyue Mao, Nengchao Wang, Katsumi Ida, Chuanxu Zhao, Qinlin Tao, Yangbo Li, Zhengkang Ren, Zijian Xuan, Ruomu Wang, Jiangang Fang, Xixuan Chen, Haonan Fang, Hanhui Li, Song Zhou, Wei Yan, Zhoujun Yang, Donghui Xia, Zhongyong Chen, Lu Wang, Yonghua Ding, the J-TEXT Team   +20 more
doaj   +1 more source

Infrared Neural Stimulation Elicits Distinct Molecular Pathways in Astrocytes Based on Laser Pulse Parameters

Advanced Biology, EarlyView.
Infrared (IR) light evokes distinct calcium and water transport responses in astrocytes, depending on stimulation duration and protocol. This study uses widefield imaging and pharmacology to reveal differential engagement of astroglial signaling pathways.
Wilson R. Adams, Ana I Borrachero‐Conejo, Pratheepa Kumari Rasiah, Emanuela Saracino, Roberto Zamboni, Eric Duco Jansen, Valentina Benfenati, Anita Mahadevan‐Jansen   +7 more
wiley   +1 more source

Immediate Impact of the COVID-19 Confinement on Physical Activity Levels in Spanish Adults

Sustainability, 2020
Enacted measures to control the spread of COVID-19 disease such as compulsory confinement may influence health behaviors. The present study investigated changes in physical activity (PA) levels during the first days of confinement. Using an online survey,
R. López‐Bueno, J. Calatayud, L. Andersen, C. Balsalobre-Fernández, J. Casaña, J. Casajús, Lee Smith, G. López-Sánchez   +7 more
semanticscholar   +1 more source

Confinement contains condensates

, 2012
Dynamical chiral symmetry breaking and its connection with the generation of hadron masses has historically been viewed as a vacuum phenomenon. We argue that confinement makes such a position untenable.
Brodsky, Stanley J., Roberts, Craig D., Shrock, Robert, Tandy, Peter C.   +3 more
core   +2 more sources

Hydrogel‐Based Capacitive Sensor Model for Ammonium Monitoring in Aquaculture

Advanced Engineering Materials, EarlyView.
Traditional techniques for monitoring aquaculture water quality, particularly ammonium levels, harm fish. This work presents a novel capacitive sensor with an ionic hydrogel transducer to monitor ammonium concentration in real time based on the ammonium‐induced hydrogel dissociation and osmotic pressure. Monitoring aquaculture water quality, especially
Mohammad Mirzaee, Mahdi Askari‐sedeh, Ali Zolfagharian, Mostafa Baghani   +3 more
wiley   +1 more source

High-beta disruption prediction study on HL-2A with instance-based transfer learning

Nuclear Fusion
Unmitigated disruptions pose a much more serious threat when large-scale tokamaks are operating in the high performance regime. Machine learning based disruption predictors can exhibit impressive performance.
Y. Zhong, W. Zheng, Z.Y. Chen, W. Yan, F. Xia, L.M. Yu, F.M. Xue, C.S. Shen, X.K. Ai, Z.Y. Yang, Y.L. Yu, Z.S. Nie, Y.H. Ding, Y.F. Liang, Z.P. Chen, J-TEXT Team   +15 more
doaj   +1 more source

Conformal or Confining

, 2015
5 pages, 5 figures. New results added, conclusions strengthened.
Silva, T. Nunes da, Pallante, E., Robroek, Lasse   +2 more
openaire   +3 more sources

First‐Principles Modeling of Solid Solution Softening and Hardening Effects in Al–Mg–Zr–Si Aluminum Alloys

Advanced Engineering Materials, EarlyView.
The role of various alloying elements in face‐centered cubic aluminum on the barrier of a Shockley partial dislocation during its motion is presented. The study aims to understand how alloying atoms such as Mg, Si, and Zr affect the energy landscape for dislocation motion, thus influencing the solid solution hardening and softening in aluminum, which ...
Inna Plyushchay, Zhengqing Wei, Nebahat Bulut, Sibylle Gemming   +3 more
wiley   +1 more source

Confinement of matter fields in compact (2+1)-dimensional QED theory of high-$T_{c}$ superconductors

, 2005
We study confinement of matter fields in the effective compact (2+1)-dimensional QED theory of high-$T_{c}$ superconductors. It is shown that the monopole configurations do not affect the propagator of gauge potential $a_{\mu}$.
Guo-Zhu Liu, J. B. Marston
core   +1 more source