Results 91 to 100 of about 70,608 (298)

Investigation of a Liquefaction Methodology to Enable the Utilization of In-Situ Produced Propellant on the Lunar and Martian Surfaces [PDF]

To enable NASAs plans to return astronauts to the lunar surface and eventually to Mars, the agency is putting emphasis on reusable cryogenic systems. Such systems will require replenishing of cryogens on-orbit via a cryogenic tanker or refueling depot ...
Stephens, Jonathan R.
core   +1 more source

Fabric‐Based Wearable Robotic Exoskeleton Gloves: Advancements and Challenges

Advanced Materials Technologies, EarlyView.
This review highlights interdisciplinary technological advances in fabric‐based robotic gloves, focusing on progress in design, fabrication, actuation, sensing, control, and power and energy requirements. It also addresses performance testing and validation, including biomechanical, strength, functional, user experience, and durability assessments, to ...
Ayse Feyza Yilmaz, Gökhan Ince, Ozgur Atalay   +2 more
wiley   +1 more source

Boil-Off Gas Generation in Vacuum-Jacketed Valve Used in Liquid Hydrogen Storage Tank

Energies
The boiling point of liquid hydrogen is very low, at −253 °C under atmospheric pressure, which causes boil-off gas (BOG) to occur during storage and transport due to heat penetration.
Hae-Seong Hwang, Seong-Un Woo, Seung-Ho Han   +2 more
doaj   +1 more source

Experimental analysis of diffusion absorption refrigerator driven by electrical heater and engine exhaust gas

Case Studies in Thermal Engineering, 2017
This work presents an experimental study of H20-NH3-H2 diffusion absorption refrigeration under two types of energy sources, i.e. the conventional electric energy from grid (electric) and exhaust gas from internal combustion engine.
Mohamed Izzedine Serge ADJIBADE, Ababacar THIAM, Christophe AWANTO, Dorothé AZILINON   +3 more
doaj   +1 more source

Degradation Mechanisms in PEM Water Electrolysis: Diagnosis and Impact

Advanced Materials Technologies, EarlyView.
This review provides an analysis of degradation mechanisms in proton electrolyte membrane water electrolyzers (PEMWE), focusing on all key components. It discusses diagnostic and measurement techniques for evaluating degradation, less‐studied mechanisms, and an expert survey.
Annik Bernhardt, Katja Lange, Robert Göckeritz, Erik Grunwald, Angelika Hähnel, Alexander Müller, Volker Naumann, Sistan Rasuli, Wolfram Münchgesang, Bruno G. Pollet, Kerstin Witte‐Bodnar, Klemens Ilse   +11 more
wiley   +1 more source

Young planets under extreme UV irradiation. I. Upper atmosphere modelling of the young exoplanet K2-33b

, 2017
The K2-33 planetary system hosts one transiting ~5 R_E planet orbiting the young M-type host star. The planet's mass is still unknown, with an estimated upper limit of 5.4 M_J. The extreme youth of the system (
Cubillos, P. E., Erkaev, N. V., Fossati, L., Johnstone, C. P., Kubyshkina, D., Lammer, H., Lendl, M.   +6 more
core   +1 more source

Functional Fibers in Soft Robotics: Advances in Material, Structural, and Systemic Tactics

Advanced Robotics Research, EarlyView.
Fiber‐form robotic systems offer a scalable pathway toward embodied intelligence in soft robotics. This review surveys functional fibers as material, structural, and systemic elements, highlighting advances in responsive materials, architectural programing, and fabrication strategies.
Joonhee Won, Jaehyun Jang, Hyeonseo Kim, Inyoung Choi, Steve Park, Seongjun Park   +5 more
wiley   +1 more source

ELABELA Targets Mitochondria to Modulate Heart Development

Advanced Science, EarlyView.
The role of peptide ELABELA (ELA) in cardiomyocyte apoptosis and congenital heart disease (CHD) is unclear. ELA deficiency caused cardiomyocyte apoptosis and CHD. A novel ELA‐APJ‐AKT‐BCL2/BAX axis in regulating mitochondrial function and contributing to CHD pathogenesis was established.
Jian Wang, Qingjie Wang, Zhikang Xu, Shuang Zhou, Yue Zhou, Junjie Yang, Lingfeng Tong, Zhuo Meng, Mei Yang, Wen Zhao, Tie Yang, Hualin Wang, Jun Zhang, Rubin Tan, Lei Wang, Yuqiang Huang, Bin Zhou, Sun Chen, Bing Zhang, Jinxiang Yuan, Jianyuan Zhao, Alex F. Chen, Kun Sun   +22 more
wiley   +1 more source

Coupled CFD modeling and thermal analysis of multi-layered insulation structures in liquid hydrogen storage tanks for various vapor-cooled shields

Case Studies in Thermal Engineering
The present study aims to propose a coupled numerical model for analyzing the influence of the configuration of the vapor-cooled shield tubes on insulation performance.
Xian You Zhu, Jung Hee Lee, Kyong-Hwan Kim, Chang-Hyuck Lim, Seong Hyuk Lee   +4 more
doaj   +1 more source

Bifidobacterium Pseudolongum‐Derived Acetate Attenuates Acute Pancreatitis Through GPR43‐Mediated Suppression of M1 Macrophage Polarization

Advanced Science, EarlyView.
The severity of acute pancreatitis (AP) is linked to reduced abundance of Bifidobacterium pseudolongum (B. pseudolongum). Administration of B. pseudolongum or its key metabolite acetate alleviates pancreatic and systemic inflammation by suppressing M1 macrophage polarization.
Langyi Guan, Xueyang Li, Cong He, Pan Zheng, Yaoyu Zou, Qi Zhu, Xin Li, Jie Liang, Junmin Yang, Li Zhang, Yuman Ye, Jianhua Wan, Huajing Ke, Jianping Liu, Nonghua Lu, Nianshuang Li, Yin Zhu   +16 more
wiley   +1 more source