Results 41 to 50 of about 133,514 (345)

Combination ranging system and mapping radar [PDF]

, 1969
Transmitter, radiating at a right angle to the spacecraft trajectory and intersecting the surface at a shallow angle, yields accurate radar maps of lunar or planetary surfaces. Earth based station receives the signal reflected from the planetary surface.
Goldstein, R. M., Horttor, R. L.
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Optimized Landing Site Selection at the Lunar South Pole: A Convolutional Neural Network Approach

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The identification of optimal landing sites is a critical first step for successful missions to the Moon and other extraterrestrial bodies, necessitating the integration of various environmental factors over large spatial scales. At the lunar south pole,
Yongjiu Feng, Haoteng Li, Xiaohua Tong, Pengshuo Li, Rong Wang, Shurui Chen, Mengrong Xi, Jingbo Sun, Yuhao Wang, Huaiyu He, Chao Wang, Xiong Xu, Huan Xie, Yanmin Jin, Sicong Liu   +14 more
doaj   +1 more source

Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics

FEBS Open Bio, EarlyView.
Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini, Nicolò Antonelli, Gianluca Molla   +2 more
wiley   +1 more source

Mid-low latitude LOLA terrain maps of the Chang’e-6 sampling area through batch self-constrained adjustment and fusion with the SLDEM

Geo-spatial Information Science
The Lunar Orbiter Laser Altimeter (LOLA) is currently the most precise spaceborne laser altimeter in lunar exploration. The digital elevation model (DEM) generated from the laser points obtained by LOLA is also the highest-precision global lunar terrain ...
Huan Xie, Ruilin Yang, Binru Yang, Xiaoshuai Liu, Yuanting Xi, Zhen Ye, Rong Huang, Yusheng Xu, Shijie Liu, Xiongfeng Yan, Xiaohua Tong   +10 more
doaj   +1 more source

Quality assessment of ICESat-2 ATL03 denoising data based on spatial distribution and photon weight [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The Ice, Cloud, and land Elevation satellite-2 (ICESat-2) adopts an advanced single photon detection system, which is susceptible to the influence of solar background noise. There are currently multiple methods for denoising ICESat-2 photon data, but due
Y. Sun, Y. Sun, Y. Sun, H. Xie, X. Tong, Q. Xu, B. Li, C. Liu, M. Ji, H. Tang, H. Tang   +10 more
doaj   +1 more source

Addressing Economic Insecurities Can Improve Patient‐Reported Outcomes in Lupus

Arthritis Care &Research, Accepted Article.
Background Economic insecurities, such as food, housing, transportation, and financial challenges, are modifiable risk factors and influence patient‐reported outcomes (PROs) in systemic lupus erythematosus (SLE). We examined: 1) associations between economic insecurities and PROs; 2) the impact of screening and addressing economic insecurities during ...
Jay Patel, Tripti Singh, Meredith Ingersoll, Shelby Gomez, Amanda Weber, Sarah E. Panzer, Sancia Ferguson, Christie M. Bartels, Shivani Garg   +8 more
wiley   +1 more source

Shape reconstruction and rotation axis estimation of small bodies using a voxel-divided shape-from-silhouette method

Geo-spatial Information Science
In the space between long-distance photometric observations and close-range visual feature observations, images that present only silhouette information of small bodies are valuable for estimating the physical characteristics and establishing a body ...
Yifan Wang, Xiongfeng Yan, Huan Xie, Ming Yang, Zhen Ye, Yaqiong Wang, Hao Chen, Jie Chen, Taoze Ying, Xiaohua Tong   +9 more
doaj   +1 more source

Global Mapping of Earth-like Exoplanets from Scattered Light Curves

, 2010
Scattered lights from terrestrial exoplanets provide valuable information about the planetary surface. Applying the surface reconstruction method proposed by Fujii et al.
Charbonneau, Colina, Cowan, Cowan, Fujii, Hajime Kawahara, Kasdin, Kokubo, Lawson, Lawson, Menke, Montañés-Rodríguez, Oakley, Pallé, Press, Seager, Sudarsky, Swain, Vidal-Madjar, Williams, Woolf, Yuka Fujii   +21 more
core   +1 more source

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source