Results 11 to 20 of about 191,217 (315)

Flower production prospects and sustainability challenges in Ethiopia: A systematic review

open access: yesFrontiers in Environmental Science, 2022
The people, planet, and profit sustainability concerns emerged as a novel concept in the ethical business governance system in the floriculture industry. In Ethiopia, however, the sectoral sustainability concern is in its infant stage.
Shiferaw Mebrat   +3 more
doaj   +1 more source

PLANET-PLANET SCATTERING IN PLANETESIMAL DISKS [PDF]

open access: yesThe Astrophysical Journal, 2009
We study the final architecture of planetary systems that evolve under the combined effects of planet-planet and planetesimal scattering. Using N-body simulations we investigate the dynamics of marginally unstable systems of gas and ice giants both in isolation and when the planets form interior to a planetesimal belt.
Raymond, Sean N.   +2 more
openaire   +2 more sources

Tilting Planets during Planet Scattering [PDF]

open access: yesThe Astrophysical Journal Letters, 2021
Abstract Observational constraints on planetary spin axis have recently become possible, and they have revealed a system that favors large spin-axis misalignment, low stellar spin–orbit misalignment, and high eccentricity. To explain the origin of such systems, we propose a mechanism that could tilt the planetary spin axis during planet ...
openaire   +2 more sources

Dynamical Outcomes of Planet‐Planet Scattering [PDF]

open access: yesThe Astrophysical Journal, 2008
Observations in the past decade have revealed extrasolar planets with a wide range of orbital semimajor axes and eccentricities. Based on the present understanding of planet formation via core accretion and oligarchic growth, we expect that giant planets often form in closely packed configurations.
Chatterjee, Sourav   +3 more
openaire   +3 more sources

Ontosonographic Maps: Toward a Theoretization of Soundscape Forms in the Anthropocene Epoch

open access: yesEtnoantropološki Problemi, 2021
This paper deals with the ways in which it is possible to conceptualize and map forms of soundscape in the epoch of the Anthropocene. After humans became a geological force, which is a role that used to be reserved for the planet itself, one can pose the
Andrija Filipović
doaj   +1 more source

A new family of planets? “Ocean-Planets” [PDF]

open access: yesIcarus, 2004
A new family of planets is considered which is between rochy terrestrial planets and gaseous giant ones: "Ocean-Planets". We present the possible formation, composition and internal models of these putative planets, including that of their ocean, as well as their possible Exobiology interest.
Leger, A.   +11 more
openaire   +4 more sources

Validação da Aplicação de Imagens Planet à Regularização Ambiental de Imóveis Rurais no Mato Grosso do Sul [PDF]

open access: yesAnuário do Instituto de Geociências, 2019
As legislações e normas ambientais direcionadas à preservação e monitoramento da utilização dos recursos naturais tem sido combustível para uma gama de pesquisas nas áreas das ciências ambientais.
Évelyn Camila Casadias Pinheiro   +2 more
doaj   +1 more source

Specific Analysis of Web Camera and High Resolution Planetary Imaging [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2006
Web camera is usually used for video communication between PC, it has small sensing area, cannot using long exposure application, so that is insufficient for astronomical application.
Youngsik Park   +3 more
doaj   +1 more source

Validation of Visually Interpreted Corine Land Cover Classes with Spectral Values of Satellite Images and Machine Learning

open access: yesRemote Sensing, 2021
We analyzed the Corine Land Cover 2018 (CLC2018) dataset to reveal the correspondence between land cover categories of the CLC and the spectral information of Landsat-8, Sentinel-2 and PlanetScope images.
Orsolya Gyöngyi Varga   +7 more
doaj   +1 more source

THE FIRST PLANETS: THE CRITICAL METALLICITY FOR PLANET FORMATION [PDF]

open access: yesThe Astrophysical Journal, 2012
12 pages, 5 figures; accepted for publication in ...
Johnson, J., Li, H.
openaire   +3 more sources

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