Results 61 to 70 of about 1,544 (211)

Structural Optimization of 3D Braided Tungsten–Copper Composites via Active Learning and Finite Element Simulation

Materials Genome Engineering Advances, EarlyView.
An uncertainty‐aware FEM–GPR active learning framework efficiently explores the design space of 3D braided W–Cu composites, identifying architectures with higher yield strength and preserved electrical conductivity, whereas SHAP interpretation highlights yarn spacing in the braid plane as the key structural factor controlling composite performance ...
Lai Zhang, Tianwen Chen, Yongjing Wu, Fuzhu Liu, Yaping Wang, Zhimao Yang, Shengchun Yang   +6 more
wiley   +1 more source

First Observations of Mars Atmosphere and Ionosphere with Tianwen-1 Radio-Occultation Technique on 5 August 2021

Remote Sensing, 2022
The radio-occultation technique can provide vertical profiles of planetary ionospheric and atmospheric parameters, which merit the planetary-climate and space-weather scientific research so far.
Xiong Hu, Xiaocheng Wu, Shuli Song, Maoli Ma, Weili Zhou, Qingchen Xu, Lei Li, Cunying Xiao, Xie Li, Chi Wang, Qinghui Liu, Lue Chen, Guangming Chen, Jianfeng Cao, Mei Wang, Peijia Li, Zhanghu Chu, Bo Xia, Junfeng Yang, Cui Tu, Dan Liu, Simin Zhang, Quan Zhang, Zheng Li   +23 more
doaj   +1 more source

Sampling, Mobility, and Anchoring in Small‐Body Sampling Robots: A Comprehensive Review

SmartBot, EarlyView.
Small‐body sampling robots are exploration systems that perform contact, sampling, and stable operations on microgravity bodies such as asteroids and comets. The authors review representative robot architectures and key technologies, focusing on the mechanisms, evolution, and coupling of sampling, mobility, and anchoring.
Yurui Shen, Yixin Zhu, Mingxia Bao, Ting Zhang, Jun Wu, Jingbin Hao, Dezheng Hua, Xinhua Liu   +7 more
wiley   +1 more source

Evaluating the Contributions of Tianwen-1 Orbiter Tracking Data to the Mars Gravity Field Modeling

The Astrophysical Journal
Mars gravity field models are critical data sets for studying the planet’s internal structure. Currently, Mars gravity field determination is primarily based on modeling of tracking data from spacecraft such as Mars Reconnaissance Orbiter, Mars Odyssey ...
Chongyang Wang, Jianguo Yan, Shanhong Liu, Shangbiao Sun, Wanling Yang, Jianfeng Cao, Denggao Qiu, Xie Li, Jean-Pierre Barriot   +8 more
doaj   +1 more source

Geological Characteristics and Targets of High Scientific Interest in the Zhurong Landing Region on Mars

Geophysical Research Letters, 2021
We used imaging, laser altimeter and thermal infrared data to map a 0.5 by 0.5° area containing the landing site of the Zhurong rover of the Tianwen‐1 mission.
Jiannan Zhao, Zijun Xiao, Jun Huang, James W. Head, Jiang Wang, Yutong Shi, Bo Wu, Le Wang   +7 more
doaj   +1 more source

Nanosatellite Launch Forecasts - Track Record and Latest Prediction [PDF]

, 2022
After almost 300 CubeSats were sent to space in 2017, the following 3 years saw a continued decline. While 2021 set a new record of about 326 nanosatellites launched, most published forecasts and expectations from the last 10 years about the growth about
Kulu, Erik
core   +1 more source

An overview of sedimentary volcanism on Mars [PDF]

, 2023
Extensive fields of sub-kilometre-to kilometre-scale mounds, cones, domes, shields, and flow-like edifices cover large parts of the martian lowlands. These features have been compared to structures on Earth produced by sedimentary volcanism – a ...
Brož, Petr, Cuřín, Vojtěch, Etiope, Giuseppe, Hauber, Ernst, Komatsu, Goro, Mazzini, Adriano, Oehler, Dorothy   +6 more
core   +2 more sources

Risk Factors and Comparative Safety of Anti‐PD‐1 Combination Therapies in Advanced Melanoma: A Nationwide Real‐World Cohort Study From China

Cancer Medicine, Volume 15, Issue 4, April 2026.
ABSTRACT Backgroud Different anti‐PD‐1 combination therapies are used to improve response rate and combat drug resistance for melanoma in the real world of China. While the reported safety data has remained scarce, especially for the controversial use of interferon.
Yuan Qiao, Xiao Fu, Sundus Shukar, Weihong Ge, Wei Yang, Ren bin Jiang, Xiaoyan Dai, Haisheng Chen, Jinyi Zhao, Meng Tang, Fei Mu, Hao Wang, Qiuhui Wu, Xing Xia, Yunan Zhang, Suzhi Ji, Ying Xu, Ruixin Cao, Jiexin Wang, Yu Yao, Jingwen Wang, Yu Fang   +21 more
wiley   +1 more source

A High-Accuracy, High Anti-Noise, Unbiased Frequency Estimator Based on Three CZT Coefficients for Deep Space Exploration Mission

Sensors, 2022
Deep space exploration navigation requires high accuracy of the Doppler measurement, which is equivalent to a frequency estimation problem. Because of the fence effect and spectrum leakage, the frequency estimation performances, which is based on the FFT
Weitao Lu, Lue Chen, Zhen Wang, Jianfeng Cao, Tianpeng Ren   +4 more
doaj   +1 more source

NATO and the Changing Space Security Environment: Strategic Challenges from China and Russia [PDF]

Space has become a strategically critical domain for both state and non-state actors, including NATO and the European Union, due to its impact on sectors such as communication, navigation, intelligence, agriculture, transport, science, and banking.
Baykal, Seray, Erler Bayir, Ozgun
core   +2 more sources