Showing 241 - 260 results of 4,914 for search '"Earth"', query time: 0.05s Refine Results
  1. 241

    GPS Based Reduced-Dynamic Orbit Determination for Low Earth Orbiters with Ambiguity Fixing by Yang Yang, Xiaokui Yue, Jianping Yuan

    Published 2015-01-01
    “…With the ever-increasing number of satellites in Low Earth Orbit (LEO) for scientific missions, the precise determination of the position and velocity of the satellite is a necessity. …”
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  2. 242

    Three-Dimensional Wave-Field Characteristics of Earth-Rock Dams with Different Hidden Hazards by Kui Wang, Jie Liu, Ying Zou, Mingjie Zhao, Yue Qiang

    Published 2018-01-01
    “…The three-dimensional wave-field characteristics of dangerous earth-rock dams are the premise and foundation to identify the hidden hazards of the earth-rock dams via wave test method. …”
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    Fractionation of Rare Earth Elements in Greisen and Hydrothermal Veins Related to A-Type Magmatism by Mikael Tillberg, Olga M. Maskenskaya, Henrik Drake, Johan K. Hogmalm, Curt Broman, Anthony E. Fallick, Mats E. Åström

    Published 2019-01-01
    “…This study focuses on concentrations and fractionation of rare earth elements (REE) in a variety of minerals and bulk materials of hydrothermal greisen and vein mineralization in Paleoproterozoic monzodiorite to granodiorite related to the intrusion of Mesoproterozoic alkali- and fluorine-rich granite. …”
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    La Terre, notre bien commun by Arnaud Berthoud

    Published 2008-03-01
    Subjects:
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  11. 251

    Energetic Electron Flux Predictions in the Near‐Earth Plasma Sheet From Solar Wind Driving by B. M. Swiger, M. W. Liemohn, N. Y. Ganushkina, S. V. Dubyagin

    Published 2022-11-01
    “…Abstract Suprathermal electrons in the near‐Earth plasma sheet are important for inner magnetosphere considerations. …”
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    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. …”
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  15. 255

    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. …”
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    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. …”
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