Results 31 to 40 of about 24,784,454 (399)

The great isotopic dichotomy of the early Solar System

open access: yesNature Astronomy, 2019
The isotopic composition of meteorites and terrestrial planets holds important clues about the earliest history of the Solar System and the processes of planet formation.
T. Kruijer, T. Kleine, L. Borg
semanticscholar   +1 more source

Planetary Mass Spectrometry for Agnostic Life Detection in the Solar System

open access: yesFrontiers in Astronomy and Space Sciences, 2021
For the past fifty years of space exploration, mass spectrometry has provided unique chemical and physical insights on the characteristics of other planetary bodies in the Solar System.
Luoth Chou   +16 more
doaj   +1 more source

Novel Solar driven Cooling System Integrated with Solar Still System [PDF]

open access: yesUniversity of the Future: Re-Imagining Research and Higher Education, 2020
Novel integrated solar cooling and solar distillation system is introduced to meet the high cooling and fresh water demands in hot and arid regions such as Qatar. The system is composed of a solardriven ejector cooling system coupled with a single-slope solar still.
Sleiti, Ahmad K.   +2 more
openaire   +2 more sources

Research on Multi-Scenario Variable Parameter Energy Management Strategy of Rural Community Microgrid

open access: yesApplied Sciences, 2020
Many rural communities in western China use renewable energy-based clean energy supply methods, and the community microgrid system of “photovoltaic + energy storage + electric heating” has been widely used. However, the energy management effect of such a
Lidong Guo   +3 more
doaj   +1 more source

Influence of gravity waves on the climatology of high-altitude Martian carbon dioxide ice clouds [PDF]

open access: yesAnnales Geophysicae, 2018
Carbon dioxide (CO2) ice clouds have been routinely observed in the middle atmosphere of Mars. However, there are still uncertainties concerning physical mechanisms that control their altitude, geographical, and seasonal distributions.
E. Yiğit, A. S. Medvedev, P. Hartogh
doaj   +1 more source

Extra-solar planetary systems [PDF]

open access: yesProceedings of the National Academy of Sciences, 1999
The discovery of extra-solar planets has captured the imagination and interest of the public and scientific communities alike, and for the same reasons: we are all want to know the answers to questions such as “Where do we come from?” and “Are we alone?” Throughout this century, popular culture has presumed the existence of other worlds and extra ...
J, Najita, W, Benz, A, Hatzes
openaire   +2 more sources

Astrometric solar-system anomalies [PDF]

open access: yesProceedings of the International Astronomical Union, 2009
AbstractThere are at least four unexplained anomalies connected with astrometric data. Perhaps the most disturbing is the fact that when a spacecraft on a flyby trajectory approaches the Earth within 2000 km or less, it often experiences a change in total orbital energy per unit mass.
Anderson, John D., Nieto, Michael Martin
openaire   +2 more sources

Mapping Solar System chaos with the Geological Orrery

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Significance The Solar System is chaotic, and precise solutions for the motions of the planets are limited to about 60 million years. Using a network of coring experiments that we call the Geological Orrery (after 18th century planetaria), we recover ...
P. Olsen   +6 more
semanticscholar   +1 more source

Establishment, Validation, and Application of a Comprehensive Thermal Hydraulic Model for a Parabolic Trough Solar Field

open access: yesEnergies, 2019
To better understand the thermal hydraulic characteristics of the parabolic trough solar field (PTSF), a comprehensive thermal hydraulic model (CTHM) based on a pilot plant is developed in this paper.
Linrui Ma   +3 more
doaj   +1 more source

Performance study of a novel solar solid dehumidification/regeneration bed for use in buildings air conditioning systems [PDF]

open access: yes, 2017
In this paper, a novel solar solid dehumidification/regeneration bed has been proposed, and its three regeneration methods, i.e., simulated solar radiation regeneration, microwave regeneration, and combined regeneration of the microwave and simulated ...
Ding, Zezhi   +5 more
core   +2 more sources

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