Results 41 to 50 of about 14,845,610 (249)

Ultra-high stability cryocooled sapphire microwave oscillators

, 2014
Technical PaperTwo nominally identical microwave cryocooled sapphire oscillators (CSO) have been implemented at the University of Adelaide. The sapphire resonators have a turning point in their frequency-temperature dependence at approximately 6 K, which
Luiten, A., A. N. Luiten, J. G. Hartnett, Ivanov, E., E. N. Ivanov, Hilton, A., Hartnett, J., A. P. Hilton   +7 more
core   +1 more source

High Proton Conductivity in xCuO/(1‐x)CeO2 Electrolytes Induced by CuO Self‐Nucleation and Electron‐Ion Coupling

Advanced Science
Operating within the 300–500 °C range, low‐temperature solid oxide fuel cells (LT‐SOFCs) enable efficient and sustainable energy conversion, addressing the limitations of conventional high‐temperature SOFCs.
Muhammad Shahid Sharif, Sajid Rauf, Zuhra Tayyab, Muhammad Ahsan Masood, Yibin Tian, Muhammad Ali Kamran Yousaf Shah, Abdullah N. Alodhayb, Rizwan Raza, Bin Zhu   +8 more
doaj   +1 more source

All-dielectric coding metasurface designs for spin-selective beam shaping and multichannel optical vortex beam manipulation

Results in Physics
Enhancing the information-carrying capacity of incident light using multifunctional metasurfaces have attracted considerable interests due to its promising applications in high-secure information encryption and communication. Incorporating spin-dependent
Naeem Ullah, Ata Ur Rahman Khalid, Shahid Iqbal, Muhammad Imran, Muhammad Ismail Khan, Vijay Laxmi, Yibin Tian, Xiaoqing Tian   +7 more
doaj   +1 more source

High-Performance Robust Controller Design of Plug-In Hybrid Electric Vehicle for Frequency Regulation of Smart Grid Using Linear Matrix Inequality Approach

IEEE Access, 2019
This paper proposes a high-performance and robust linear quadratic regulator-proportional integral derivative (LQR-PID) controller for frequency regulation in a two-area interconnected smart grid with a population of plug-in hybrid electric vehicles ...
Sajal Kumar Das, Mizanur Rahman, Sanjoy Kumar Paul, Maniza Armin, Priyo Nath Roy, Norottom Paul   +5 more
doaj   +1 more source

Distributed secondary optimal control for self‐maintaining microgrids on pelagic islands

IET Renewable Power Generation, 2023
Considering the geographic distance, self‐maintaining microgrids are widely built to supply power on pelagic islands, where developing distributed autonomous control strategies while guaranteeing microgrids’ resilience and energy security have gained ...
Sicheng Deng, Laijun Chen, Baosen Zhang, Wenkai Yuan, Shengwei Mei   +4 more
doaj   +1 more source

Referral Patterns and Diagnostic Timeliness in Pediatric Cancer: A Hospital‐Based Study in Indonesia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Timely diagnosis and treatment are critical for improving survival among children with cancer. In low‐ and middle‐income countries (LMICs), delays are common and may be influenced by fragmented referral pathways and diagnostic limitations.
Nur Melani Sari, Regina Hadi Putri, Fatimah Assyifa, Judith Spijkerman, Gertjan Johannes Kaspers, Susi Susanah   +5 more
wiley   +1 more source

Control of electric drives with high switching frequency operation capabilities: envisionning future prospects [PDF]

Industrial drives are currently of great relevance considering the technological challenges associated with climate change mitigation. Current technologies use silicon devices with switching frequencies around 10 kHz.
Repecho del Corral, Víctor, Arias Pujol, Antoni, Biel Solé, Domingo   +2 more
core   +1 more source

Plasticity enhancement in metallic glasses via aging-assisted ultrasonic vibrations

Materials Futures
The aging of glassy materials is an inevitable process leading to progressive property degradation. In metallic glasses (MGs), aging-induced property degradation poses a persistent challenge to their applications.
Jianyu Chen, Shuai Ren, Zhe Chen, Jie Dong, Zhichao Lu, Jiahua Zhu, Lixing Zhu, Yangguang Zhan, Xingran Zhao, Wenxue Wang, Shenghao Zeng, Jing Xiao, Sajad Sohrabi, Xiong Liang, Ke Yang, Dong Ma, Jiang Ma   +16 more
doaj   +1 more source

Improved Coordinated Control Strategy of Multi-terminal DC Grids Considering Frequency Adaptation and Fast Stabilization Characteristics

Zhongguo dianli
Multi-terminal flexible DC transmission (VSC-MTDC) technology has a wide range of application prospects in large-scale and wide-range multiple types of renewable energy grid-connection and outward transmission.
Yunrui WU, Jianpo ZHANG, Xincheng TIAN, Kaifeng YING, Zhong CHEN   +4 more
doaj   +1 more source

Design consideration for frequency containment reserve provisions by a multi‐terminal HVDC system

IET Generation, Transmission & Distribution, 2023
Frequency control is considered to be an important function of multi‐terminal HVDC (MTDC) systems. Sharing frequency containment reserves (FCRs) among interconnected AC systems using HVDC technology is particularly attractive in the European context ...
Kosei Shinoda, Jing Dai, Gianni Bakhos, Juan Carlos Gonzalez‐Torres, Abdelkrim Benchaib, Seddik Bacha   +5 more
doaj   +1 more source