Showing 3,601 - 3,620 results of 4,914 for search '"Earth"', query time: 0.08s Refine Results
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    Reduction behavior of iron in the red mud by Eray S., Keskinkilic E., Topkaya Y.A., Geveci A.

    Published 2021-01-01
    “…Red mud or bauxite residue contains significant quantities of industrial metals such as Fe, Al, and Ti, as well as rare earth elements such as Sc, Ce, and La. The authors performed a laboratory-scale project dealing with stepwise recovery of valuable elements from two bauxite residues, namely Iranian red mud (IRM) and Turkish red mud (TRM). …”
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    Ecological footprint assessment of central java province: An input-output approach by Irawan Evi

    Published 2025-01-01
    “…The ecological footprint provides a vital measure of how human activities impact natural resources and the environment, highlighting the balance—or imbalance—between consumption and the Earth's capacity to regenerate resources. Understanding these dynamics is crucial for sustainable development, especially in regions facing resource constraints. …”
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    Reduced Order Probabilistic Emulation for Physics‐Based Thermosphere Models by Richard J. Licata, Piyush M. Mehta

    Published 2023-05-01
    “…Space weather has effects on Earth's magnetosphere that cause a dynamic and enigmatic response in the thermosphere, particularly on the evolution of neutral mass density. …”
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  10. 3610

    Capacity Density Assessment of Satellite Constellation Network by Xian MENG, Dali QIN, Yu WANG, Chuili KONG, Hejia LUO, Jun WANG

    Published 2023-09-01
    “…The traditional analytical method greatly underestimates the throughput capability of the system in low beam density scenario, and cannot reveal the capacity saturation phenomenon in high beam density scenario.To overcome the preceding problems, a new system simulation method was proposed to accurately evaluated the capacity density indicator of satellite constellation network and integrated satellite and terrestrial network, Based on this method, first, the capacity density of different longitude and latitude regions of the earth was evaluated.It could be observed that the capacity density of the same region varies greatly with the movement of the satellite, and the maximum capacity density was twice the minimum.Then, areas with higher visibility usually had higher capacity density.In high-frequency scenarios, the impact of atmospheric attenuation on capacity density could not be ignored.Finally, for the integrated satellite and terrestrial network, the evaluation results showed that the capacity density of cellular coverage and satellite coverage could differ by four orders of magnitude.In order to improved the capacity density of satellite constellation network, two technical paths were attempted: increasing the maximum number of illuminated beams and increasing the satellite scale.The results showed that the performance was better when the constellation scale was increased when the total beams of the constellation were the same.However, the two ways to increase the total number of beams in a constellation had an upper bound on capacity, and the marginal effect decreased significantly.Finally, a scheme to increase the gain of satellite antenna was proposed.The simulation results showed that the proposed scheme could significantly increase the capacity density of constellation.…”
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  11. 3611

    A valorização das “taipas de pedras” como estratégia para a conservação da paisagem dos Campos de Altitude em São Francisco de Paula/ RS, Brasil by Ismael Jesus Klein, Márcia dos Santos Ramos Berreta

    Published 2023-06-01
    “…In the second, the taipas were mapped through visualization in Google Earth images, manually vectorized and the map elaborated in Software Qgis. …”
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    CHROMATOGRAPHIC ANALYSIS OF CARBOXYLIC ACIDS IN THE FLOWERING SHOOTS OF SOME Vitex L. SPECIES by Mariia Shanaida, Alina Holenko

    Published 2022-06-01
    “…The genus Vitex L. counts more than 200 species of shrubs and trees common to subtropical areas of the Earth. Only fruits of Vitex agnus-castus L. are used in official medicine. …”
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    Satellite Constellation Orbit Design Optimization with Combined Genetic Algorithm and Semianalytical Approach by Tania Savitri, Youngjoo Kim, Sujang Jo, Hyochoong Bang

    Published 2017-01-01
    “…The constellation consists of nonsymmetric and circular Low Earth Orbit (LEO) satellites. A global optimization method, Genetic Algorithm (GA), is chosen due to its ability to locate a global optimum solution for nonlinear multiobjective problems. …”
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    The Influence of the Syrup Type on Rheology, Color Differences, Water Activity, and Nutritional and Sensory Aspects of High-Protein Bars for Sportsmen by Jan Małecki, Igor Tomasevic, Bartosz G. Sołowiej

    Published 2022-01-01
    “…The color of the tested bars was from light cream to Earth yellow. Bars obtained with tapioca liquid fiber had the lowest nutritional value. …”
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