Results 61 to 70 of about 94,822 (286)

Large amplitude solitary waves in and near the Earth’s magnetosphere, magnetopause and bow shock: Polar and Cluster observations [PDF]

Nonlinear Processes in Geophysics, 2003
Solitary waves with large electric fields (up to 100's of mV/m) have been observed throughout the magnetosphere and in the bow shock. We discuss observations by Polar at high altitudes ( ~ 4-8 RE ), during crossings of the plasma sheet boundary and ...
C. Cattell, C. Neiman, J. Dombeck, J. Crumley, J. Wygant, C. A. Kletzing, W. K. Peterson, F. S. Mozer, M. André   +8 more
doaj  

Activating a Metallization Switch for Record Hydrogen Evolution in Single‐Atom Modified Polar MOF Piezocatalysts

Advanced Materials, EarlyView.
ABSTRACT Piezocatalytic hydrogen evolution enables the conversion of mechanical energy into chemical fuels, but its efficiency is constrained by a trade‐off between piezoelectric polarization and electronic conductivity. Strong piezoelectric polarization is essential for sufficient driving force, yet highly polar materials typically suffer from poor ...
Chongyan Hao, Xinwei Guan, Yang Wu, Lingfeng Zhu, Yiwen Mai, Thomas Frauenheim, Zhenping Fu, Yalin Lu, Shidong Wang, Hanxing Liu, Hua Hao, Shujun Zhang, Zhenxiang Cheng, Xiaoning Li   +13 more
wiley   +1 more source

Description of the inelastic collision of two solitary waves for the BBM equation

, 2008
We prove that the collision of two solitary waves of the BBM equation is inelastic but almost elastic in the case where one solitary wave is small in the energy space. We show precise estimates of the nonzero residue due to the collision.
A. Cohen, A.C. Bryan, C.E. Kenig, D.H. Peregine, Frank Merle, H. Kalisch, J. Miller, J.C. Eilbeck, J.L. Bona, K. El Dika, K. El Dika, K.O. Abdulloev, Lax, M. Grillakis, M. Wadati, M. Weinstein, N.J. Zabusky, P.J. Morrison, R. Hirota, R.M. Miura, T. Mizumachi, T. Mizumachi, T. Tao, T.B. Benjamin, Tetsu Mizumachi, W. Craig, W. Eckhaus, Y. Martel, Y. Martel, Y. Martel, Y. Martel, Y. Martel, Y. Martel, Y. Martel, Y. Martel, Y. Martel, Yvan Martel   +36 more
core   +4 more sources

Chemically Doped Conductive Polymers for Wearable Health Monitoring

Advanced Materials Technologies, EarlyView.
Among conductive polymers, poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), polyaniline (PANI), and polypyrrole (PPy) are the most studied and applied. Chemical doping significantly boosts intrinsic conductivity and mechanical robustness.
Mengdi Zuo, Jian Song, Hong Hu, Le Zheng, Lei Zhang, Charles H. Lawrie   +5 more
wiley   +1 more source

The Intricate Sabatier Optimality of Anion Electroreduction and Its Consequences for Nitrate Reduction

Angewandte Chemie, EarlyView.
The Sabatier principle and volcano plots declare that optimal electrocatalysis is found in the middle between strong and weak binding of key intermediates. However, it is shown here that during anion electroreduction, strong and weak binding are potential‐dependent concepts and volcanoes are mobile.
Mattia Salomone, Ioannis Katsounaros, Federico Calle‐Vallejo   +2 more
wiley   +2 more sources

On solutions of a Boussinesq-type equation with amplitude-dependent nonlinearities: the case of biomembranes

, 2016
Boussinesq-type wave equations involve nonlinearities and dispersion. In this paper a Boussinesq-type equation with amplitude-dependent nonlinearities is presented.
Engelbrecht, Jüri, Peets, Tanel, Tamm, Kert   +2 more
core   +1 more source

The solitary wave of asexual evolution [PDF]

Proceedings of the National Academy of Sciences, 2003
Using a previously undescribed approach, we develop an analytic model that predicts whether an asexual population accumulates advantageous or deleterious mutations over time and the rate at which either process occurs. The model considers a large number of linked identical loci, or nucleotide sites; assumes that the selection coefficient per site is ...
Igor M, Rouzine, John, Wakeley, John M, Coffin   +2 more
openaire   +2 more sources

Stabilization of Single Metal Atoms on Graphitic Carbon Nitride: Synthetic Strategies and Emerging Applications

Advanced Science, EarlyView.
This review highlights recent advancements in stabilizing single metal atoms on graphitic carbon nitride emphasizing innovative synthesis strategies and emerging applications in electrocatalysis, photocatalysis and organic transformations, along with key challenges and future perspective. Abstract Emerging as a new frontier in catalysis science, single‐
Wenyao Zhang, Junjie Cui, Zhenjie Yao, Boyuan Zhu, Nithinraj Panangattu Dharmarajan, Ajayan Vinu, Junwu Zhu   +6 more
wiley   +1 more source

A Negatively Curved Pyrene‐Fused Azaacene

Angewandte Chemie, EarlyView.
A pyrene‐fused azaacene derivative is reported in which steric overcrowding caused by eight phenyl substituents induces bending of the aromatic framework rather than twisting. ABSTRACT Non‐planar aromatic hydrocarbons display distorted π‐frameworks that give rise to unique optoelectronic properties.
Marco Carini, Miguel Martín‐Arroyo, Manuel Melle‐Franco, Aurelio Mateo‐Alonso   +3 more
wiley   +2 more sources

Electrostatic Solitary Waves in Earth's Magnetosheath: Properties, Nature, and Origin

Geophysical Research Letters
We present the analysis of 2,152 electrostatic solitary waves observed aboard the Magnetospheric Multiscale in the Earth's magnetosheath. The electric field of the solitary waves is predominantly bipolar and parallel to the local magnetic field.
Zubair I. Shaikh, Ivan Y. Vasko
doaj   +1 more source