Results 31 to 40 of about 15,357 (267)

Kaempferol Attenuates Spaceflight‐Associated Knee Cartilage Degradation by Targeting NOX4‐Mediated Mitochondrial Dysfunction

Advanced Science, EarlyView.
We have shown that both simulated and actual spaceflight contribute to cartilage degradation in the knees of mice. Using RNA sequencing and bioenergetic profiling, we identified NADPH oxidase 4 (NOX4) as a key factor driving these changes. Additionally, we found that kaempferol, a naturally occurring flavonoid that binds directly to NOX4, reduces ...
Yuesong Yin, Ruiling Xu, Meagan J. Makarczyk, Jia‐Jun Liu, Silvia Liu, Matthew Z. Shi, Roberta Di Carlo, Michael F. Almeida, Alex Garris, Sarah Day, Rebekah Sanchez‐Hodge, Jonathan C. Schisler, Aleeza H. Zilberman, Noah G. Allen, Angela J. Kubik, Elizabeth A. Blaber, Arnold Z. Olali, Wanqing Xie, Douglas C. Wallace, Christopher E. Mason, Peter G. Alexander, Giuseppe Intini, Afshin Beheshti, Hang Lin   +23 more
wiley   +1 more source

Research on Torque Loading Technology Based on L Lever in Spacecraft Bolt

MATEC Web of Conferences, 2015
As the main form of structure assembly, the stability of bolt joint is directly related to the performance of spacecraft. This essay is used to analyze the cause of standard torque spanner which is not suitable to the tightening torque and summarized ...
Song Xiaohui, Liu Zhibin, Liu Zhe
doaj   +1 more source

Bio‐Inspired Bidirectional Winding Origami With Programmable Modular Reconfigurability and Scalability

Advanced Science, EarlyView.
A bio‐inspired bidirectional‐winding origami platform enables scalable and programmable deployable structures. Double axial folding inspired by earwig hindwings and Flasher‐based hybridization create modular multilayer architectures with diverse attainable winding angles under fixed boundary conditions.
Wenyao Zhang, Chunlong Wang, Mingli Liu, Chuang Shi, Hongwei Guo, Rongqiang Liu   +5 more
wiley   +1 more source

Engineering Dirac Cones in Graphene for Efficient Iodide Catalysis: Insights by Nanoscale Electrochemistry

Advanced Science, EarlyView.
Graphene iodide oxidation is regulated by Dirac cone engineering. Electrostatic gating tunes the Fermi level to control local iodide oxidation reaction activity, while magic‐angle twisted bilayer graphene creates flat‐band‐derived interfacial states that promote charge transfer and iodine‐species interaction, revealing a nanoscale route to electronic ...
Yang‐Sheng Lu, Kuo‐En Chang, Ta‐Lei Chou, Aitor Garcia‐Ruiz, Ting‐Han Lin, Yen‐Ting Liu, Akichika Kumatani, Ming‐Hao Liu, Kenji Watanabe, Takashi Taniguchi, Ming‐Wen Chu, Tse‐Ming Chen, Chun‐Wei Chen, Shao‐Sian Li   +13 more
wiley   +1 more source

Study on thermal analysis simulation and test of propellant refueling process for optical module

Xibei Gongye Daxue Xuebao
Propellant refueling is important for long-term operation of the optical module in orbit. However, its thermal environment is harsher than on previous missions. Therefore, thermal control of the entire process is required.
LU Wei, ZHANG Ningli, WANG Shuai, FENG Maolong, FAN Hanlin   +4 more
doaj   +1 more source

Predicting Performance of Hall Effect Ion Source Using Machine Learning

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This study introduces HallNN, a machine learning tool for predicting Hall effect ion source performance using a neural network ensemble trained on data generated from numerical simulations. HallNN provides faster and more accurate predictions than numerical methods and traditional scaling laws, making it valuable for designing and optimizing Hall ...
Jaehong Park, Guentae Doh, Dongho Lee, Youngho Kim, Changmin Shin, Su‐Jin Shin, Young‐Chul Ghim, Sanghoo Park, Wonho Choe   +8 more
wiley   +1 more source

Spacecraft Informatics [PDF]

Enterprise Information Systems, 2021
Kai-Leung Yung, Lida Xu, Chris W. J. Zhang   +2 more
openaire   +2 more sources

Operations for Autonomous Spacecraft

2022 IEEE Aerospace Conference (AERO), 2022
Onboard autonomy technologies such as planning and scheduling, identification of scientific targets, and content-based data summarization, will lead to exciting new space science missions. However, the challenge of operating missions with such onboard autonomous capabilities has not been studied to a level of detail sufficient for consideration in ...
Rebecca Castaño, Tiago Vaquero, Federico Rossi 0001, Vandi Verma, Ellen Van Wyk, Dan Allard, Bennett Huffmann, Erin M. Murphy, Nihal Dhamani, Robert A. Hewitt, Scott Davidoff, Rashied B. Amini, Anthony Barrett, Julie C. Castillo-Rogez, Steve A. Chien, Mathieu Choukroun, Alain Dadaian, Raymond Francis, Benjamin Gorr 0001, Mark Hofstadter, Mitch Ingham, Cristina Sorice, Iain Tierney   +22 more
openaire   +2 more sources

Synthetic Aperture Interferometric Passive Radiometer Imaging to Locate Electromagnetic Leakage From Spacecraft Surface

IET Circuits, Devices and Systems
The localization of electromagnetic radiation leakage through cabin gaps is a critical and challenging aspect of electromagnetic compatibility (EMC) design for spacecraft with complex electromagnetic environments.
Yuting Zhang, Jie Zhang, Yuhan Huang, Nan Dong   +3 more
doaj   +1 more source

Air dehumidification by membrane with cold water for manned spacecraft environmental control

MATEC Web of Conferences, 2017
The traditional condensation dehumidification method requires additional gas-liquid separation and water recovery process in the manned spacecraft humidity control system, which would increase weight and complexity of systems.
Shang Yonghong, Wang Jing, Bi Yanqiang, Jian Yabin, Pei yifei, Yuan Weixing, Yang Bo   +6 more
doaj   +1 more source