Results 231 to 240 of about 5,294,508 (322)

Fallschirmspringen, Paragliding und Wingsuit‐Fliegen: Im freien Fall

Physik in unserer Zeit, EarlyView.
Mit nichts als Schwerkraftantrieb vom Himmel zu fallen, führt zu den schnellsten Sportarten, aber auch zu den gefährlichsten. Zusammenfassung Fallschirmspringen wird erst seit 1951 als offizielle Sportart betrieben. Moderne Fallschirme sind sehr gut steuerbar, weshalb zum Beispiel das Zielspringen immer anspruchsvoller wird.
Leopold Mathelitsch, Sigrid Thaller
wiley   +1 more source

Carbon Material Films for Flexible and Efficient Electromagnetic Interference Shielding: A Review

Rare Metals, EarlyView.
ABSTRACT With the rapid development of technology such as the Internet and electronic devices, electromagnetic radiation pollution has become an increasingly prominent issue, which negatively impacts both human health and the normal operation of equipment.
Yu‐Xin Chen, Ding Zhang, Shi‐Ting Wu, Yun‐Fan Yang, Wei‐Xue Meng, Zhao‐Yun Lin, Yan Zhang, Feng‐Mei Guo, Ying‐Jiu Zhang, Yuan‐Yuan Shang, An‐Yuan Cao   +10 more
wiley   +1 more source

Nanofiltration Membranes for High‐Selectivity Separation of Li+ and Mg2+ From Salt Lake Brines: Strategies, Challenges, and Perspectives

Rare Metals, EarlyView.
ABSTRACT Against the backdrop of global clean energy transition and surging demand for lithium resources, lithium extraction from salt lakes presents unprecedented development opportunities. Nanofiltration (NF) membrane technology, recognized for its efficiency, energy savings, and environmental benefits, demonstrates significant application potential ...
Wen‐Feng Li, Jie Tian, Yu‐Yang Zhao, Jing‐Lan He, Liang Pei, Hu Liu   +5 more
wiley   +1 more source

Progress of MXenes‐based responsive materials for soft sensors and actuators

Responsive Materials, EarlyView.
MXene, a promising 2D material, excels at mimicking human sensing and feedback system, making it ideal for intelligent robots. This review first covers its structure, properties, and synthesis. It then summarizes recent MXene‐based sensors and actuator.
Peidi Zhou, Wenjie Yang, Yihan Qiu, Meiping Xu, Leiting Liao, Xinlei Gong, Chan Zheng, Minghua You, Cheng Zhang, Huamin Chen, Mingcen Weng   +10 more
wiley   +1 more source

Triboelectric Capacitance Supplementation in Energy Storage Composites with Functionalized Carbon Fiber Electrodes

Small, EarlyView.
Triboelectric contact electrification evaluation between structural supercapacitor layers using surface‐functionalized carbon fiber electrodes. Electrospun nanofiber separators can aid in capacitance augmentation by leveraging the contact electrification effect of dissimilar materials.
Žan Simon, Bhagya Dharmasiri, Ronald T. Leon, Ben Newman, Fatemeh Mokhtari, Piers Coia, Elmer S. Austria Jr., Behnam Akhavan, Peter C. Sherrell, Amanda V. Ellis, Russell J. Varley, Luke C. Henderson   +11 more
wiley   +1 more source

Electrospun PAN Membrane Loaded with AgInP2Se6 Nanosheets for Triboelectric Energy Harvesting

Small, EarlyView.
Exfoliated AgInP2Se6 nanosheets are incorporated into a polyacrylonitrile (PAN) polymer matrix by electrospinning and applied for the first time in a triboelectric nanogenerator (TENG). The hybrid membrane delivers strong electrical output and exhibits reversible humidity sensitivity, responding rapidly to changes in relative humidity.
Filipa M. Oliveira, Jiri Sturala, Bing Wu, Latifah Alrabie, Vojtěch Kundrát, Jakub Zalesak, Ana I. S. Neves, Monica F. Craciun, Rui Gusmão, Zdeněk Sofer, Evgeniya Kovalska   +10 more
wiley   +1 more source

Conductive Hydrogel‐Enabled Electrode for Scalp Electroencephalography Monitoring

Small Methods, EarlyView.
Conductive hydrogels are emerging as effective EEG electrode‐scalp interfaces to overcome hair barriers. This review presents the demanding parameters for hair‐compatible hydrogel electrodes and summarizes their applications in healthcare and brain‐computer interfaces.
Zichong Ji, Leqi Li, Meiqiong Zheng, Xinyuan Ye, Wenqing Yan, Zonglei Wang, Yi Liu, Yuli Wang, Yujie Zhang, Pengcheng Zhou, Jiawei Yang, Mingzhe Wang, Shihong Lin, Hossam Haick, Yan Wang   +14 more
wiley   +1 more source

Influence of Viscous Dissipation on Wear Behavior and Hardness Evolution of Tool Steels in Glass‐Fiber‐Reinforced Polymer Processing

steel research international, EarlyView.
Tool steels tested under injection molding conditions with glass‐fiber‐reinforced polymers, revealing how viscous dissipation drives hardness loss, even in PM grades. A sharp rise in wear with increasing injection volume rate and thermomechanical load uncovers striking material differences.
David Zidar, Roman Staudigl, Walter Friesenbichler, Clemens Holzer   +3 more
wiley   +1 more source

Recent advances of non‐invasive sensors for smart wearable respiratory monitoring

VIEW, EarlyView.
Respiration contains rich physiological and pathological information, making it one of the most fundamental and continuous vital signs. Respiration monitoring is a non‐invasive and simple, but incredibly powerful, tool for assessing health, managing disease, and tracking fitness.
Jianhui Chen, Baoxiang Yang, Chang Peng, Bao Yang, Licheng Zhou, Zhenyu Jiang, Zejia Liu, Yiping Liu, Liqun Tang   +8 more
wiley   +1 more source