Results 71 to 80 of about 2,401,333 (312)

Magnetic processes in a collapsing dense core. I Accretion and Ejection

, 2007
Abridged. It is important for the star formation process to understand the collapse of a prestellar dense core. We investigate the effect of the magnetic field during the first collapse up to the formation of the firstcore, focusing particularly on the ...
Allen, André, Banerjee, Basu, Basu, Belloche, Blandford, Casse, Ciolek, Contopoulos, Crutcher, Crutcher, Crutcher, Curry, Ferreira, Fiedler, Fromang, Galli, Galli, Hennebelle, Hennebelle, Hennebelle, Hennebelle, Hosking, Jorgensen, Krasnopolsky, Ledoux, Lesaffre, Looney, Lynden-Bell, Lynden-Bell, Machida, Machida, Mouschovias, Mouschovias, P. Hennebelle, Pelletier, Phillips, Price, S. Fromang, Shu, Shu, Shu, Shu, Shu, Teyssier, Tilley, Tomisaka, Uchida, Ulrich, Ziegler   +50 more
core   +1 more source

Adaptive Twisting Metamaterials

Advanced Materials, EarlyView.
This work introduces torque‐controlled twisting metamaterials as a transformative platform for adaptive crashworthiness. By combining multiscale predictive modeling with experimental validation on additively manufactured gyroids, it demonstrates tunable stiffness, collapse stress, and energy absorption.
Mattia Utzeri, Maria L. Gatto, Edoardo Mancini, Donato Orlandi, Daniele Cortis, Marco Sasso, Shanmugam Kumar   +6 more
wiley   +1 more source

Matrix Stiffness Governs Fibroblasts’ Regulation of Gingival Immune Homeostasis

Advanced Materials, EarlyView.
This study identifies a “mechano‐epigenetic” checkpoint in which matrix stiffness governs the immune responses of gingival fibroblasts. Using biomimetic hydrogels and human gingival explants, the studies revealed that restoring extracellular matrix stiffness actively suppresses inflammation via non‐canonical NF‐κB signaling and DNA methylation ...
Hardik Makkar, Nghi Tran, Yu‐Chang Chen, Kang I. Ko, Rebecca G. Wells, Kyle H. Vining   +5 more
wiley   +1 more source

Deep inside low-mass stars [PDF]

, 2008
Low-mass stars exhibit, at all stages of their evolution, the signatures of complex physical processes that require challenging modeling beyond standard stellar theory.
Ando, Brun, Burkhart, Burkhart, Charbonnel, Charbonnel, Charbonnel, Charbonnel, Corinne Charbonnel, Dintrans, Eggenberger, Gaigé, Kiraga, Kiraga, Maeder, Montalban, Montalban, Montalban, Nordlund, Palacios, Pantillon, Pasquini, Ringot, Schatzman, Siess, Suijs, Suzanne Talon, Talon, Talon, Talon, Talon, Talon, Talon, Varenne, Zahn, Zahn   +35 more
core   +2 more sources

Development of Heat Engines Powered by Twisted and Coiled Polymer Fiber Actuators

Advanced Materials Technologies, EarlyView.
Continuously rotating engines driven by thermally responsive actuating materials can turn waste heat into useful energy. For the first time heat engines operated by twisted and coiled polymer fiber actuators are demonstrated with engine design guided by two simple analytical models.
Geoffrey M. Spinks, Burhan Bin Asghar Abbasi, Zhen Jiang   +2 more
wiley   +1 more source

Unilateral Ankle‐Foot Exoneuromusculoskeleton with Balance‐Sensing Feedback for Self‐Help Telerehabilitation after Stroke

Advanced Robotics Research, EarlyView.
This study introduces a hybrid robot that integrates mechanical assistance by musculoskeletons (i.e., soft pneumatic muscle with rigid exoskeletal extensions), neuromuscular electrical stimulation, and vibrotactile feedback in a lightweight wearable mechatronic complex applicable to the paretic ankle–foot poststroke for gait restoration. The system can
Fuqiang Ye, Wei Rong, Waiming Li, Kwok‐Ting Wong, Man‐Kit Pang, Hon‐Wah Wai, Lilly Li, Zicong Hong, Song Guo, Zong‐Hao Ma, Yongping Zheng, Ming Zhang, Nicholas Chow, Jianing Zhang, Xiaoling Hu, Fei Chen, Waisang Poon   +16 more
wiley   +1 more source

Kinetic derivation of a Hamilton-Jacobi traffic flow model

, 2012
Kinetic models for vehicular traffic are reviewed and considered from the point of view of deriving macroscopic equations. A derivation of the associated macroscopic traffic flow equations leads to different types of equations: in certain situations ...
Borsche, Raul, Kimathi, Mark, Klar, Axel
core   +1 more source

A Vision of Collaborative Verification-Driven Engineering of Hybrid Systems [PDF]

, 2013
. Hybrid systems with both discrete and continuous dynamics are an important model for real-world physical systems. The key challenge is how to ensure their correct functioning w.r.t. safety requirements.
Mitsch, Stefan, Passmore, Grant Olney, Platzer, André   +2 more
core   +4 more sources

Strong‐Magnetic Flexible Composites for Magnetically Responsive Soft Robots

Advanced Robotics Research, EarlyView.
This perspective provides an overview of the performance mechanisms, preparation methods, and applications of strong magnetic flexible composite materials in soft actuators (such as gripping, movement, and sensing), and further explores current opportunities and challenges.
Wenwen Li, Shuai Liu, Xinyi Wang, Xinglong Gong, Shouhu Xuan   +4 more
wiley   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source