Results 11 to 20 of about 64,364 (331)

Evaluating the effect of four unknown parameters included in a latitudinal energy balance model on the habitability of exoplanets

Open Astronomy, 2020
Among different models for determining the habitable zone (HZ) around a star, a Latitudinal Energy Balance Model (LEBM) is very beneficial due to its parametricity which keeps a good balance between complexity and simulation time.
Bahraminasr Majid, Jafarzadeh S. Javad, Montazeri Fatemeh, Poro Atila, Sarabi Soroush   +4 more
doaj   +1 more source

Manuels scolaires d’éducation à la citoyenneté au collège et problématique du développement durable, pour une analyse du curriculum prescrit d’instruction civique au Gabon [PDF]

Akofena, 2022
Résumé : La présente contribution se donne pour objectif d’interroger l’éducation à la citoyenneté au collège dans les établissements d’enseignement secondaire public.
Orphée Martial SOUMAHO MAVIOGA & Dany Daniel BEKALE
doaj  

First Galileo Single-Frequency Occultation Process and Precision Analysis of FengYun3E

Remote Sensing, 2023
This article proposes a single-frequency occultation method whose core is the reconstruction of a second frequency measurement. We process the actual received Galileo E1 single-frequency occultation observation data of FengYun3E to meet the urgent need ...
Ming Yang, Xiangguang Meng, Haoran Tian, Yueqiang Sun, Qifei Du, Weihua Bai, Bowen Wang, Xianyi Wang, Peng Hu, Guangyuan Tan   +9 more
doaj   +1 more source

Impacts of Orbital and Constellation Parameters on the Number and Spatiotemporal Coverage of LEO-LEO Occultation Events

Remote Sensing, 2021
The development of small-satellite technologies allows the low Earth orbit intersatellite link (LEO-LEO) occultation method to observe the Earth’s atmosphere with global coverage and acceptable costs using electromagnetic signals, in which the L/X/K/M ...
Congliang Liu, Gottfried Kirchengast, Yueqiang Sun, Veronika Proschek, Xin Wang, Longfei Tian, Qifei Du, Weihua Bai, Chunjun Wu, Peng Hu, Guangyuan Tan   +10 more
doaj   +1 more source

A photometric study of the hot exoplanet WASP-19b [PDF]

, 2013
Context: When the planet transits its host star, it is possible to measure the planetary radius and (with radial velocity data) the planet mass. For the study of planetary atmospheres, it is essential to obtain transit and occultation measurements at ...
Alonso, R., Fumel, A., Gillon, M., Jehin, E., Lendl, M., Naef, D., Queloz, D.   +6 more
core   +4 more sources

Atmospheric Characterization of the Hot Jupiter Kepler-13Ab [PDF]

, 2014
Kepler-13Ab (= KOI-13.01) is a unique transiting hot Jupiter. It is one of very few known short-period planets orbiting a hot A-type star, making it one of the hottest planets currently known.
Agol, Eric, Burrows, Adam, Cowan, Nicolas B., Desert, Jean-Michel, Fortney, Jonathan, Howard, Andrew W., Isaacson, Howard, Knutson, Heather A., Lewis, Nikole A., O'Rourke, Joseph G., Showman, Adam P., Shporer, Avi, Szabo, Gyula M., Todorov, Kamen O., Zhao, Ming   +14 more
core   +4 more sources

Design and Simulation of Stellar Occultation Infrared Band Constellation

Remote Sensing, 2022
This study provides an in-depth analysis of the characteristics of stellar occultation events. Using 10 target star sources, the influence of orbital elements on the number, duration, and distribution of stellar occultation events was simulated and ...
Qinglin Zhu, Mingchen Sun, Xiang Dong, Pengfei Zhu   +3 more
doaj   +1 more source

Scintillation Caustics in Planetary Occultation Light Curves [PDF]

, 2003
We revisit the GSC5249-01240 light curve obtained during its occultation by Saturn's North polar region. In addition to refractive scintillations, the power spectrum of intensity fluctuations shows an enhancement of power between refractive and ...
Asantha R. Cooray, Goodman J., Goodman J. J., J. L. Elliot, Roques F. B.   +4 more
core   +3 more sources

Research on Stellar Occultation Detection with Bandpass Filtering for Oxygen Density Retrieval

Remote Sensing, 2023
Stellar occultation instruments detect the transmission of stellar spectra through the planetary atmosphere to retrieve densities of various atmospheric components.
Zheng Li, Xiaocheng Wu, Cui Tu, Xiong Hu, Zhaoai Yan, Junfeng Yang, Yanan Zhang   +6 more
doaj   +1 more source

Occult metastasis

Biomedicine & Pharmacotherapy, 2001
The most important factor affecting the outcome of patients with invasive cancers is whether the tumor has spread, either regionally (to regional lymph nodes) or systemically. However, a proportion of patients with no evidence of systemic dissemination will develop recurrent disease after primary 'curative' therapy.
D, Hawes, A M, Neville, R J, Cote
openaire   +2 more sources