Showing 161 - 180 results of 3,244 for search '"Earth"', query time: 0.06s Refine Results
  1. 161

    Generating Solar Sail Trajectories in the Earth-Moon System Using Augmented Finite-Difference Methods by Geoffrey G. Wawrzyniak, Kathleen C. Howell

    Published 2011-01-01
    “…Although trajectory design within the context of the Earth-Moon restricted problem is advantageous for this problem, it is difficult to envision the design space for offset orbits. …”
    Get full text
    Article
  2. 162

    Effect of Particle Size and Solution Leaching on Water Retention Behavior of Ion-Absorbed Rare Earth by Zhong-qun Guo, Yuan-ming Lai, Jie-fang Jin, Jian-rong Zhou, Zheng Sun, Kui Zhao

    Published 2020-01-01
    “…Effects of particle size and solution leaching on water retention behavior of ion-absorbed rare earth as well as action mechanism were investigated. …”
    Get full text
    Article
  3. 163
  4. 164
  5. 165

    The Earth-Mars Transfer Trajectory Optimization of Solar Sail Based on hp-Adaptive Pseudospectral Method by Yufei Guo, Dongzhu Feng, Xin Wang, Cong Li, Yunzhao Liu

    Published 2018-01-01
    “…In this paper, the pressure of solar light acting on the solar sail is analyzed, and the kinematic equation of the solar sail is established in polar coordinate system first; then the basic principle of the hp-adaptive pseudospectral method is introduced, and the steps of solving the transfer trajectory optimization problem by hp-adaptive pseudospectral method are proposed; finally, the trajectory optimization of the solar sail from Earth orbit to Sun-centered Mars orbit is simulated as an example to demonstrate the effectiveness of hp-adaptive pseudospectral method in the orbit transfer optimization problem of solar sail. …”
    Get full text
    Article
  6. 166

    Pathogenic potential of ornithogenic <i>Escherichia coli</i> strains detected in the Earth's polar regions by Batyrbek I. Aslanov, Daniil V. Azarov, Maria A. Makarova, Elizaveta G. Marysheva, Lyudmila A. Kraeva, Aleksey S. Mokhov, Ekaterina A. Lebedeva, Nikita E. Goncharov, Natalya V. Lebedeva, Dmitry A. Starikov, Victoria V. Kolodzhieva, Dmitry E. Polev, Artemy E. Goncharov

    Published 2024-12-01
    “…The aim of this study was to assess the pathogenic potential of E. coli strains from the polar regions of the Earth, based on the analysis of the genomes of these bacteria from typical ornithogenic ecosystems of the Arctic and Antarctic. …”
    Get full text
    Article
  7. 167
  8. 168

    Effects of Aging Treatment on Laser-Welded Mg-Rare Earth Alloy NZ30K by Jun Dai, Li Yang, Lili Li, Guolin Guo, Lanzhong Guo

    Published 2013-01-01
    “…Magnesium-rare earth alloys have received extensive attention due to their attractive mechanical properties resulting from high density of precipitation. …”
    Get full text
    Article
  9. 169
  10. 170

    Kinetics of Transesterification of Croton megalocarpus Oil Using Alkaline Earth Catalysts with Conventional and Microwave Heating by Anil Kumar, Henry K. Kiriamiti

    Published 2020-01-01
    “…Transesterification kinetics of Croton megalocarpus oil to produce fatty acid methyl esters (FAME) was studied using homogeneous NaOH and heterogeneous alkaline earth Nano MgO, MgO, Nano CaO, CaO, Reoxidized CaO, SrO, and BaO catalysts. …”
    Get full text
    Article
  11. 171
  12. 172
  13. 173
  14. 174

    Ultrasonic, Molecular and Mechanical Testing Diagnostics in Natural Fibre Reinforced, Polymer-Stabilized Earth Blocks by C. Galán-Marín, C. Rivera-Gómez, F. Bradley

    Published 2013-01-01
    “…Ultrasonic pulse velocity (UPV) and mechanical strength testing techniques were then used to measure the porous properties of the manufactured natural polymer-soil composites, which were formed into earth blocks. Mechanical tests were carried out for three different clays which showed that the polymer increased the mechanical resistance of the samples to varying degrees, depending on the plasticity index of each soil. …”
    Get full text
    Article
  15. 175

    Fractionation of rare earth elements in tropical soils from marine mudstone along a toposequence by Marvin D. Cascante, Cho-Yin Wu, Zeng-Yei Hseu

    Published 2025-01-01
    “…Marine mudstones are major reservoirs for rare earth elements (REEs), and their topographical positions influence the distribution of soil REEs. …”
    Get full text
    Article
  16. 176
  17. 177
  18. 178

    Estimating Target Heights Based on the Earth Curvature Model and Micromultipath Effect in Skywave OTH Radar by Hou Chengyu, Wang Yuxin, Chen Jiawei

    Published 2014-01-01
    “…In order to avoid the error caused by the flat earth model, in this paper, an earth curvature model is introduced into OTH radar altimetry methods. …”
    Get full text
    Article
  19. 179

    An Autonomous Navigation Algorithm for High Orbit Satellite Using Star Sensor and Ultraviolet Earth Sensor by Li Baohua, Lai Wenjie, Chen Yun, Liu Zongming

    Published 2013-01-01
    “…An autonomous navigation algorithm using the sensor that integrated the star sensor (FOV1) and ultraviolet earth sensor (FOV2) is presented. The star images are sampled by FOV1, and the ultraviolet earth images are sampled by the FOV2. …”
    Get full text
    Article
  20. 180

    Génocide, révisionnisme, négationnisme : la réception contrastée de la série Black Earth Rising by Sylvie Allouche

    Published 2024-12-01
    “…Black Earth Rising (Rwanda, la couleur du sang in French) is a 2018 miniseries by Hugo Blick co-produced by the BBC and Netflix whose main character, Kate Ashby, is initially presented as a survivor of the Tutsi genocide which happened in Rwanda in 1994. …”
    Get full text
    Article