Results 101 to 110 of about 1,181,220 (330)

Holographic entanglement entropy and thermodynamic instability of planar R-charged black holes

, 2014
The holographic entanglement entropy of an infinite strip subsystem on the asymptotic AdS boundary is used as a probe to study the thermodynamic instabilities of planar R-charged black holes (or their dual field theories).
Wu, Xing
core   +1 more source

Using In Situ TEM to Understand the Surfaces of Electrocatalysts at Reaction Conditions: Single‐Atoms to Nanoparticles

Advanced Functional Materials, EarlyView.
This review summarizes recent advances in closed‐cell in situ TEM strategies for accurate determination of the activity and stability of single‐atom catalyst systems during operation. Operando conditions causing dynamic changes of SAC systems are highlighted and we explain why ensemble average‐based optical techniques may benefit from the technological
Martin Ek, Soshan Cheong, Julie Cairney, Richard D. Tilley, Ingemar Persson   +4 more
wiley   +1 more source

A continuous population of variable stars up to about 1.5 mag above the horizontal branch?

, 2003
Increasing samples of pulsating variable stars populating the classical instability strip from the horizontal branch to a few magnitudes brighter are being found in several Local Group galaxies, irrespective of the galaxy morphological type.
Baldacci, L., Clementini, G., Held, E. V., Marconi, M., Rizzi, L.   +4 more
core   +1 more source

Defining the instability strip of pulsating post-AGB binary stars from ASAS and NSVS photometry [PDF]

, 2006
We analyse public domain time-series photometric observations of 30 known and candidate binary post-AGB stars for measuring pulsation and orbital periods. We derive periodicities for 17 stars for the first time in the literature.
László L. Kiss, A. Derekas, G. Szabó, T. Bedding, L. Szabados   +4 more
semanticscholar   +1 more source

Deciphering the Interplay Between Wetting and Chemo‐Mechanical Fracture in Lithium‐Ion Battery Cathode Materials

Advanced Functional Materials, EarlyView.
The fundamental intricate couplings between electrolyte wetting and fracture evolution are investigated in large single‐crystal V2O5 samples using both experimental techniques and simulations. Both approaches reveal consistent fracture patterns and lithium distribution concentration maps influenced by the wetting mechanism.
Wan‐Xin Chen, Luis J. Carrillo, Arnab Maji, Xiang‐Long Peng, Joseph Handy, Sarbajit Banerjee, Bai‐Xiang Xu   +6 more
wiley   +1 more source

Post-asymptotic giant branch nonradial instability strips

The Astrophysical Journal, 1991
Stability analyses are performed for nonradial g(+)-mode pulsations of postasymptotic AGB stellar models to determine the location of their pulsational instability strips in the Hertzsprung-Russell diagram. Stellar models are analyzed that are assumed to have undergone a major mass loss event either near the tip of the AGB or shortly thereafter and ...
Letizia Stanghellini, Arthur N. Cox, Sumner Starrfield   +2 more
openaire   +1 more source

Pulsation frequency distribution in Delta Scuti stars

, 2015
We study the frequency distributions of Delta Scuti stars observed by the Kepler satellite in short-cadence mode. To minimize errors in the estimated stellar parameters, we divided the instability strip into ten regions and determined the mean frequency ...
Balona, L. A., Daszynska-Daszkiewicz, J., Pamyatnykh, A. A.   +2 more
core   +1 more source

Charge‐Induced Morphing Gels for Bioinspired Actuation

Advanced Functional Materials, EarlyView.
This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu, Saba Firouznia, Charl F. J. Faul, Majid Taghavi, Jonathan Rossiter   +4 more
wiley   +1 more source

On the Structure of the Cepheid Instability Strip [PDF]

Symposium - International Astronomical Union, 1975
Using rich photometric material on the Cepheids in the Galaxy and the Large and Small Magellanic Clouds, the structure of the instability strip in the HR diagram is investigated. The method of the δ-δ diagrams is used, δ being the difference of certain Cepheid characteristics from the means for a given period.
N. N. Yakimova, N. S. Nikolov, G. R. Ivanov   +2 more
openaire   +1 more source

Numerical Simulation of Heat Transfer Problem in Hot and Cold Rolling Process

Journal of Engineering, 2006
An efficient numerical model had been developed to model the thermal behaviour of the rolling process. An Eulerian formulation was employed to minimize the number of grid points required. The model is capable to calculate the temperature distribution,
Ihsan Y. Hussain
doaj   +1 more source