Results 81 to 90 of about 12,853 (286)

Large amplitude free vibration analysis of functionally graded beams using an homogenisation procedure

MATEC Web of Conferences, 2012
The purpose of the present paper is to show that the problem of geometrically non linear free vibrations of functionally graded (FG) beams with immovable ends can be reduced to that of isotropic homogeneous beams with effective bending stiffness and ...
Benamar R., EL Bikri K., Zerkane A.
doaj   +1 more source

High‐Performance Zero‐Gap Glycerol‐Fed Electrolyzer for C3 Chemicals and Hydrogen Production

Advanced Materials, EarlyView.
This work presents a dynamic, self‐regulating operation strategy that enables selective glycerol electrooxidation in the OER‐free regime, co‐producing C3 chemicals and hydrogen at cell voltages below 1.25 V. Voltage‐ and temperature‐resolved analyses define optimal operating conditions, achieving a sustained current density of 500 mA cm−2 at ∼1.21 V ...
Shayan Angizi, Inder Sangha, Mahsa Khoshnam, Mahdis Nankali, Ashkan Irannezhad, Amirhossein Rakhsha, Zahra Teimouri, Amir Foroozan, Mengnan Zhu, Navid Noor, Reza Eslami, Drew Higgins   +11 more
wiley   +1 more source

Correlated Dual‐Gradient Electrodes Enabling Spatially Synchronized Sulfur Redox in High‐Mass‐Loading Li–S Batteries Under High Current Densities

Advanced Materials, EarlyView.
Coupling a dual‐gradient carbonized framework with Fe2O3/Fe‐N‐C catalytic sites enables spatially synchronized sulfur redox across the entire electrode thickness in high‐mass‐loading Li–S batteries. This synergistic structural–catalytic design effectively mitigates concentration, ohmic, and electrochemical polarization, thereby achieving high‐capacity ...
Yuxuan Zhang, Yeongjun Oh, Jinwook Baek, Minyoung Kim, Zachary Didat, Han Wook Song, Sunghwan Lee   +6 more
wiley   +1 more source

Analytical solution for vibration characteristics of rotating graphene nanoplatelet-reinforced plates under rub-impact and thermal shock

Advanced Composites Letters, 2020
This article presents an analytical investigation on vibration characteristics of rotating graphene nanoplatelet (GPL)-reinforced plates subjected to rub-impact and thermal shock.
Tian Yu Zhao, Yu Xuan Wang, Hong Gang Pan, Xiang Sheng Gao, Yi Cai   +4 more
doaj   +1 more source

Generalized Finite Difference Method for Plate Bending Analysis of Functionally Graded Materials

Mathematics, 2020
In this paper, an easy-to-implement domain-type meshless method—the generalized finite difference method (GFDM)—is applied to simulate the bending behavior of functionally graded (FG) plates.
Yu-Dong Li, Zhuo-Chao Tang, Zhuo-Jia Fu
doaj   +1 more source

The Tell-Tale “Heart”: Determining “Fair” Use of Unpublished Texts [PDF]

, 1992
Copyright laws require that courts consider at least four factors in determining whether a quotation or close paraphrase of another\u27s unpublished work without permission falls under fair use.
LeFevre, Karen Burke
core   +1 more source

Bio‐Inspired Hierarchical Nanoreactor With Hetero‐Coordinated Fe–P–Co Bridges for Whole‐Pathway‐Regulated Electrocatalytic Oxygen Reduction

Advanced Materials, EarlyView.
A bioinspired Co‐doped Fe2P on N‐doped carbon with a hierarchical eucalyptus‐like nanoarchitecture is engineered to regulate oxygen across the entire electrochemical pathway, achieving a half‐wave potential of 0.938 V vs. RHE, sustaining 373 h of discharge in Al‐air batteries, and delivering an energy density of 3487 Wh/kg.
Qiaoling Xu, Lei Zhang, Xiayu Li, Weihang Xu, Linyi Ren, Mai Xu, Yingtang Zhou, Hermenegildo Garcia   +7 more
wiley   +1 more source

Why isn’t sex optional? Stem-cell competition, loss of regenerative capacity, and cancer in metazoan evolution

Communicative & Integrative Biology, 2020
Animals that can reproduce vegetatively by fission or budding and also sexually via specialized gametes are found in all five primary animal lineages (Bilateria, Cnidaria, Ctenophora, Placozoa, Porifera).
Chris Fields, Michael Levin
doaj   +1 more source

Inclusive Fitness

, 2016
This paper reviews and addresses a variety of issues relating to inclusive fitness. The main question is: are there limits to the generality of inclusive fitness, and if so, what are the perimeters of the domain within which inclusive fitness works? This
Allen, Benjamin, Hoffman, Moshe, Simon, Burton, van Veelen, Matthijs, Veller, Carl   +4 more
core  

Weyl's symbols of Heisenberg operators of canonical coordinates and momenta as quantum characteristics

, 2006
The knowledge of quantum phase flow induced under the Weyl's association rule by the evolution of Heisenberg operators of canonical coordinates and momenta allows to find the evolution of symbols of generic Heisenberg operators.
Amand Faessler, Bagrov V. G., Dirac P. A. M., Dirac P. A. M., Fedosov B., Karasev M. V., Krivoruchenko M. I., M. I. Krivoruchenko, Nakamura M., Stratonovich R. L., Voros A., Voros A., Weyl H.   +12 more
core   +1 more source