Results 71 to 80 of about 194,161 (166)

Dark ages reionization & galaxy formation simulation XII: Bubbles at dawn

, 2017
Direct detection of regions of ionized hydrogen (HII) has been suggested as a promising probe of cosmic reionization. Observing the redshifted 21-cm signal of hydrogen from the epoch of reionization (EoR) is a key scientific driver behind new-generation,
Duffy, Alan R., Geil, Paul M., Mesinger, Andrei, Mutch, Simon J., Poole, Gregory B., Wyithe, J. Stuart B.   +5 more
core   +1 more source

Functional differential equations of the neutral type: Oscillatory features of solutions

AIMS Mathematics
This article delves into the behavior of solutions to a general class of functional differential equations that contain a neutral delay argument. This category encompasses the half-linear case and the multiple-delay case of neutral equations.
O. Moaaz, Asma Al-Jaser
semanticscholar   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Oscillation of solutions to third-order half-linear neutral differential equations

Electronic Journal of Differential Equations, 2012
Summary: We study the oscillation of solutions to the third order neutral differential equations \[ \left(a(t)([x(t)\pm p(t)x(\delta(t))]'')^\alpha\right)' + q(t)x^\alpha(\tau(t))=0. \] Sufficient conditions are established so that every solution is either oscillatory or converges to zero.
Jozef Dzurina, Ethiraju Thandapani, Sivaraj Tamilvanan   +2 more
openaire   +2 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Oscillation of solutions to second-order half-linear differential equations with neutral terms

Electronic Journal of Differential Equations, 2013
Summary: We are concerned with the oscillation of the second-order neutral differential equation \[ (r(t)|z'(t)|^{\alpha-1} z'(t))'+ q(t)|x(\sigma(t))|^{\alpha-1} x(\sigma(t))= 0, \] where \(z(t):= x(t)+ \sum^m_{i=1} p_i(t) x(\tau_i(t))\), and (H1) \(m> 1\) is an integer, \(q\in C[t_0,\infty)\), \(r,p_i,\tau_i,\sigma\in C^1[t_0, \infty)\); (H2 ...
ZHANG, Chenghui, LI, Tongxing, ŞENEL, Mehmet Tamer   +2 more
openaire   +3 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Bio‐Orthogonally Crosslinked Supramolecular Polymer Bottlebrush Hydrogels for Long‐Term 3D Cell Culture

Advanced Functional Materials, EarlyView.
Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi, David Pretzel, Peer Nölte, Kourosh Rezaei, Ulrich S. Schubert, Johannes C. Brendel   +5 more
wiley   +1 more source

Bilayer Membrane in Confined Geometry: Interlayer Slide and Steric Repulsion

, 2004
We derived free energy functional of a bilayer lipid membrane from the first principles of elasticity theory. The model explicitly includes position-dependent mutual slide of monolayers and bending deformation.
A. Ben-Shaul, A. Yeung, E. Evans, E. I. Kats, E. I. Kats, F. Brochard, F. C. MacKintosh, H. Kleinert, L. D. Landau, M. Kraus, S. A. Safran, U. Seifert, U. Seifert, U. Seifert, W. Helfrich, W. Helfrich   +15 more
core   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source