Results 131 to 140 of about 3,979,277 (268)

Light‑Driven Propulsion of Graphene Aerogels in Microgravity

Advanced Science, EarlyView.
Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab, Rami Elkaffas, Basel Altawil, Omar Alsuwaidi, Afnan Almubashir, Claire Perfetti, Shanavas Shajahan, Marco Braibanti, Sean Swei, Carlo Saverio Iorio, Yarjan Abdul Samad   +10 more
wiley   +1 more source

Flexible IMU Sensor Array For 3D Colonoscope Shape Reconstruction and AI‐Based Loop Detection

Advanced Science, EarlyView.
We propose a sensing platform for 3D visualization of the colonoscope combined with artificial intelligence (AI)‐based loop detection. The system consists of an array of 15 inertial measurement units (IMUs) mounted on a flexible printed circuit board that can be retrofitted into the instrument channel of conventional colonoscopes.
Tuukka Panula, Anni Halkilahti, Andrei Ivanov, Matti Kaisti   +3 more
wiley   +1 more source

Design of an Extendable High Boost Multi-Port Z-Network Converter for Small Power Grid-Connected PV Applications

IEEE Open Journal of Power Electronics
Using the Z-network idea and conventional isolated power converters as its foundation, this article introduces a multi-port converter. This article proposes a topology that is called Multi-Port Z-Network Converter (MPZNC).
Kanagaraj N, Ramasamy M, Vijayakumar M, Obaid Aldosari   +3 more
doaj   +1 more source

Hyperlipidemia Aggravates Alveolar Bone Loss via Periodontal Ligament Stem Cell Ferroptosis Through GSK3β Dependent Ubiquitin‐Mediated NRF2 Degradation

Advanced Science, EarlyView.
Lipid metabolic stress triggers ferroptosis in PDLSCs through the GSK3β/NRF2 pathway, thereby aggravating periodontal bone loss. Upregulated GSK3β promotes NRF2 ubiquitination and proteasomal degradation via β‐TrCP, suppressing NRF2 nuclear translocation and antioxidant target expression.
Yuxiao Zhang, Xiangyao Wang, Yaxin Wu, Liping Liu, Gaoshaer Nuerlan, Ahsawle Ozathaley, Xiaorui Zhang, Jinping Wang, Bowen Yang, Jing Mao, Yan Liu, Shiqiang Gong   +11 more
wiley   +1 more source

Recent Advances in Zirconium‐Based Metal–Organic Framework Membranes for Desalination

Advanced Science, EarlyView.
Zirconium‐based metal–organic framework membranes with tunable pore architectures, defect chemistry, and surface functionalities for Desalination are systematically reviewed. Their fabrication strategies, desalination performance across pressure‐driven, forward osmosis, and pervaporation processes, and structure–property–performance relationships are ...
Mao Fu, Hai‐Tian Xia, You Wu, Sen Li, Ying Liu, Ya‐Li Liu, Shi‐Qiang Wang, Yingchao Dong   +7 more
wiley   +1 more source

Estudo de motores acionados por conversores de frequência e influências no sistema isolante [PDF]

, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.O presente trabalho apresenta os diversos fatores aos quais o sistema de isolação dos motores de indução são submetidos ...
Karavasilis, Renato Gualda
core  

Ultrafast, High‐Capacity Uranium Harvesting From Seawater via a Hierarchically Porous Polymer Electrode

Advanced Science, EarlyView.
A hierarchically porous AOPIM‐CNT electrode enables uranium harvesting from seawater via adsorption‐promoted electrodeposition. Rapid diffusion and selective adsorption are coupled with electrochemical crystallization and spontaneous detachment, creating a self‐refreshing process that sustains high‐capacity, continuous extraction from ultradilute ...
Zejun Song, Zhenggong Wang, Lele Guo, Zhining Wang, Keming Wan, Ting Zhang, Wangxi Fang, Jian Jin   +7 more
wiley   +1 more source

Flexible Unusual Ternary‐Component Graded‐Modulus Dielectric Films with High‐Density Capacitive Energy Storage

Advanced Science, EarlyView.
Hierarchical PP–LSR107–BaTiO3 nanocomposite films are fabricated by one‐step extrusion and stretching for roll‐to‐roll manufacture, combining high energy storage and processing flexibility. LSR107 surrounds BaTiO3‐rich regions, locating amorphous PP, decreasing defects, and introducing deep traps that homogenize the electric field and suppress charge ...
Yi Gao, Xin‐Jie Wang, Lei Huang, Kun Xing, Baoquan Wan, Yan‐Hui Song, Jian‐Tao Wang, Li‐Juan Yin, Tong Liang, Yan Meng, Zunpeng Feng, Kai Huang, Ke Bi, Shao‐Long Zhong, Zhi‐Min Dang   +14 more
wiley   +1 more source

Napelemes inverter építése

, 2015
Napelemes inverter építése. A Dc/Dc konverterek és MPPT működése.
Nagy, Antal
core  

CO2‐to‐CO Electrolysis in Pure Water at Ampere‐Level Current Density and 1000 h Stability via a Rapid‐Transport Fixed‐Charge Interface

Advanced Science, EarlyView.
CO2 reduction in pure water is enabled by a rapid‐transport fixed‐charge interface that couples nanochannels with a cationic microenvironment. This design eliminates the mass transport plateau, stabilizes key reaction intermediates, and suppresses the hydrogen evolution reaction, ultimately achieving ampere‐level current densities and stable operation ...
Qiqi Wan, Gang Zhu, Wenxing Jiang, Yingying Liu, Jie Gui, Chi Xu, Ji Chen, Xiaodong Zhuang, Changchun Ke   +8 more
wiley   +1 more source