Results 91 to 100 of about 49,471 (336)

Optimized Cooling Power of a Vuilleumier Refrigerator with Limited Regeneration [PDF]

, 2021
Abdellah Khodja, Raphael Paul, Andreas Fischer, Karl Heinz Hoffmann   +3 more
openalex   +1 more source

Adaptive 4D‐Printed Vascular Stents With Low‐Temperature‐Activated and Intelligent Deployment

Advanced Functional Materials, EarlyView.
Microarchitected coronary artery stents were fabricated using a polycaprolactone (PCL)‐based shape memory polymer (SMP) composite via projection micro‐stereolithography (PµSL) 4D printing. By incorporating diethyl phthalate (DEP) as a plasticizer, the thermal transition temperature (Ttran) was modulated to about 37°C, enabling rapid and autonomous ...
Yannan Li, Yifan Pan, Chikahiro Imashiro, Chaolun Xu, Jianxian He, Jingao Xu, Kewei Song, Ze Zhang, Chen Gao, Junbo Jiang, Runhuai Yang, Kayo Hirose, Shinjiro Umezu   +12 more
wiley   +1 more source

Development and research testing of a low thrust on gaseous-propellant rocket engine chamber

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение
The article presents preliminary results of the development and research testing of a rocket engine chamber with a thrust of 100 N operating on fuel components: gaseous oxygen-gaseous hydrogen, designed to be used as the main engine of a small upper ...
A. I. Musteikis, A. A. Levikhin, S. V. Kolosenok   +2 more
doaj   +1 more source

FEATURES OF THE ADAPTATION OF 3D PRINTED REGENERATIVE COOLING CHANNELS OF THE LPRE THROAT INSERTS

, 2021
С. Ш. Векілов, Volodymyr Ivanovich Lipovskyi, Roman Marchan   +2 more
openalex   +2 more sources

Astrocyte‐Guided Maturation of Neural Constructs in a Modular Biosynthetic Hydrogel for Biohybrid Neurotechnologies

Advanced Functional Materials, EarlyView.
A modular biosynthetic PVA–gelatin hydrogel crosslinked via visible‐light thiol‐ene chemistry is engineered as a coating for neural electrodes. Optimizing matrix composition and mechanical properties enables the hydrogel to support astrocytic populations that guide neural differentiation and functional maturation.
Martina Genta, Sofia Peressotti, Roberto Portillo‐Lara, Josef Goding, Rylie Green   +4 more
wiley   +1 more source

A rocket engine design expert system [PDF]

The overall structure and capabilities of an expert system designed to evaluate rocket engine performance are described. The expert system incorporates a JANNAF standard reference computer code to determine rocket engine performance and a state-of-the ...
Davidian, Kenneth J.
core   +1 more source

Photothermal Macroporous Lignin Cryogels for Off‐Grid, Continuous Atmospheric Water Collection via Interlayer Heat Recovery

Advanced Functional Materials, EarlyView.
Photothermal, macroporous lignin‐based cryogels are engineered to convert sunlight into low‐grade heat. Integrated as stacked beds in a drum‐type device, a thin copper interlayer transfers waste heat between beds, enabling interlayer heat recovery and continuous solar cycling.
Jie Yan, Jiqing Lu, Tian Bai, Lin Li, Zhaoxuan Niu, Yiying Yue, Wanli Cheng, Guangping Han, Orlando J. Rojas   +8 more
wiley   +1 more source

Cavity optoelectromechanical regenerative amplification [PDF]

, 2012
Cavity optoelectromechanical regenerative amplification is demonstrated. An optical cavity enhances mechanical transduction, allowing sensitive measurement even for heavy oscillators.
Bowen, Warwick P., Knittel, Joachim, Lee, Kwan H., McRae, Terry G., Szorkovszky, Alex, Taylor, Michael A.   +5 more
core   +2 more sources

Dual‐Ligand Metal‐Organic Frameworks via In Situ Amidoxime Engineering for Selective Ion Separation

Advanced Functional Materials, EarlyView.
Inspired by microbial ion‐trapping mechanisms, a mild and universal strategy is developed to construct highly porous amidoxime‐functionalized MOFs. DFT calculations and molecular force measurements reveal that the dual‐ligand amidoxime configuration significantly strengthens Ga(III) affinity.
Zhifang Lv, Guixia Fan, Yun Bai, Guosheng Li, Peng Li, Wenjihao Hu, Yijun Cao, Wenshuai Yang, Daoguang Teng, Hongbo Zeng   +9 more
wiley   +1 more source

Требования к метану как к топливу для жидкостных ракетных двигателей

Химическая безопасность
В статье рассмотрены требования к метану как топливу для жидкостных ракетных двигателей, сформированные по результатам анализа нормативной базы, оценки влияния примесей на криогенные и теплофизические характеристики топлива, а также исследования свойств ...
Шаповалова, О.В., Петрова, А.А., Степанов, А.В., Ахременков, Б.В., Головань, С.Е.   +4 more
doaj   +1 more source