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3601
City-level emergy metabolism accounts for China’s 281 cities from 2000 to 2020
Published 2025-01-01Get full text
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3602
Enhancing in search of Milankovitch cycles from stratigraphic record using convex optimization algorithm
Published 2025-01-01Get full text
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3603
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3604
Using ICON Satellite Data to Forecast Equatorial Ionospheric Instability Throughout 2022
Published 2024-03-01Get full text
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3605
Reduction behavior of iron in the red mud
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
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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3608
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3609
Reduced Order Probabilistic Emulation for Physics‐Based Thermosphere Models
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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3610
Capacity Density Assessment of Satellite Constellation Network
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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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
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
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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3616
Satellite Constellation Orbit Design Optimization with Combined Genetic Algorithm and Semianalytical Approach
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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Deghosting, Demultiple, and Deblurring in Controlled-Source Seismic Interferometry
Published 2011-01-01Get full text
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3619
A Configuration Model for Hospital Design Support Systems
Published 2025-01-01Get full text
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3620
The Influence of the Syrup Type on Rheology, Color Differences, Water Activity, and Nutritional and Sensory Aspects of High-Protein Bars for Sportsmen
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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