Results 51 to 60 of about 204,662 (249)

One-dimensional Ising ferromagnet frustrated by long-range interactions at finite temperatures [PDF]

, 2009
We consider a one-dimensional lattice of Ising-type variables where the ferromagnetic exchange interaction J between neighboring sites is frustrated by a long-ranged anti-ferromagnetic interaction of strength g between the sites i and j, decaying as |i-j|
A. V. Finkelstein, A. Vindigni, D. P. Landau, D. Pescia, F. Cinti, K. A. Dill, K. H. Fischer, K. Huang, L. D. Landau, O. Portmann, P. M. Chaikin, Q. Annealing, R. Peierls   +12 more
core   +3 more sources

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

A new method of parameter estimation for sinusoidal frequency modulated continuous wave signal

Dianxin kexue, 2018
A new method of modulation parameter estimation was proposed to process the sinusoidal frequency modulated continuous wave signal intercepted by electronic reconnaissance.Firstly,based on the periodicity of signal modulation function,the modulated ...
Xiaopeng NIE, Zucheng SHEN, Xiaofeng WANG, Chunyu WANG   +3 more
doaj   +2 more sources

Research on application of power Internet of Things technology in leakage fault diagnosis of rural power grid

Energy Reports, 2023
The accuracy and efficiency of current leakage fault diagnosis methods in rural areas are low. In view of this defect, a rural power leakage diagnosis system based on narrowband Internet of Things is studied and designed.
Chengzhi Jiang, Hao Xu, Weijian Jin, Xiangyu Bi   +3 more
doaj   +1 more source

Observations and a model of gravity-wave variability in the middle atmosphere [PDF]

, 1986
A major goal was to determine what portion of the gravity-wave frequency spectrum accounted for the majority of the momentum flux and divergence, as this has important implications for the middle atmosphere response. It was found that approx.
Fritts, D. C., Vincent, R. A.
core   +1 more source

Characterization of the Torsional Piezoelectric-like Response of Tantalum Trisulfide Associated with Charge-Density-Wave Depinning

, 2009
We have studied the frequency and voltage dependence of voltage-induced torsional strains in orthorhombic TaS3 [V. Ya. Pokrovskii, et al, Phys. Rev. Lett. 98, 206404 (2007)] by measuring the modulation of the resonant frequency of an RF cavity containing
D. Dominko, J. Nichols, J. W. Brill, J. W. Brill, J. Zhou, L. Ladino, P. Monceau   +6 more
core   +1 more source

Cardiac‐Derived ECM Microspheres for Enhanced hiPSC‐CMs Maturation

Advanced Functional Materials, EarlyView.
Cardiac extracellular matrix microspheres derived from decellularized porcine heart provide a biomimetic 3D microenvironment for human induced pluripotent stem cell–derived cardiomyocytes (hiPSC‐CMs). This platform supports short‐ and long‐term culture, enhances structural organization, and promotes electrophysiological and functional maturation of ...
Jiazhu Xu, Joel Aboagye, Marcella Edwards, Nick Rogozinski, Yufeng Wen, Angello Huerta Gomez, Zui Pan, Ge Zhang, Huaxiao Yang, Yi Hong   +9 more
wiley   +1 more source

Discussion of Square Wave Control Technology for Permanent Magnet Synchronous Motor

机车电传动, 2018
Permanent magnet synchronous motor (PMSM) has the outstanding advantage of full voltage output in square wave mode, which can greatly improve the output power of the system, especially for high speed and high power applications.
WEN Yuliang, ZHENG Hanfeng, HUANG Jiade, HE Yaping, FENG Jianghua   +4 more
doaj  

Improved Quasi-Square-Wave Modulation Suitable for Isolated Modular Multilevel DC-DC Converter

CSEE Journal of Power and Energy Systems
The most commonly used modulation for an isolated modular multilevel DC-DC converter (IMMDCC) is quasi-square-wave modulation (QSWM). However, in order to realize soft-switching, QSWM-IMMDCC usually needs to increase the phase-shifting angle or reduce ...
Junliang Pan, Mingyu Wang
doaj   +1 more source

Chaotic Secure Communication Based on Single Feedback Phase Modulation and Channel Transmission

IEEE Photonics Journal, 2019
In this paper, a chaotic secure communication system based on single feedback phase modulation is designed, in which phase modulation of feedback light is carried out by using random square wave as communication key, and chaotic light with wide spectrum ...
Shuangyi Cui, Jianzhong Zhang
doaj   +1 more source