Results 71 to 80 of about 16,789 (154)

SISTEMA GPS: UMA ÓRBITA EM EVOLUÇÃO - NÚMERO DE SATÉLITES E PERIODICIDADE

open access: yes, 2014
O projeto teve como objetivo monitorar os satelites do O presente artigo teve como objetivo monitorar os satelites do Sistema de Posicionamento Global (GPS) a partir de um ponto fixo na Terra e verificar a periodicidade desses quanto a sua rotacao e ...
Ramon Juliano Rodrigues   +3 more
semanticscholar   +1 more source

Microclimate refugia shape microclimatic niches and predict individual variability in post‐breeding migration in a partially migratory species

open access: yesJournal of Animal Ecology, Volume 94, Issue 12, Page 2527-2541, December 2025.
The niche is characterized along a gradient of temperature and microclimate refugia. Individuals in breeding areas with low microclimate refugia availability are more likely to cover larger distances to post‐breeding areas, increasing exposure to risks.
Rita F. Ramos   +4 more
wiley   +1 more source

¡Que nadie se mueva! Sin televisión no hay nación

open access: yesUmática
En este ensayo mostraremos el ensamblaje social y político que posibilitó el primer satélite mexicano llamado Morelos I y que marca, de manera simbólica, la entrada de México a la era neoliberal y el empoderamiento de Televisa como productora de la ...
Ilana Boltvinik, Rodrigo Viñas Miranda
doaj   +1 more source

Acceso a la órbita de los satélites geoestacionarios: Propuesta para un régimen jurídico especial

open access: yes, 2014
El texto tiene como objetivo estudiar las posibilidades de regulacion juridica de la orbita de los satelites geoestacionarios. El articulo estudia la problematica alrededor del acceso y uso de esta regulacion con el fin de analizar los esfuerzos por ...
Sylvana Peña Saffon
semanticscholar   +1 more source

Impact of Filtering Methods in the Assessment of COSMIC Electron Density Profiles Over the Brazilian Region: Excluding Profiles With Negative Values Is the Best Strategy?

open access: yesRadio Science, Volume 60, Issue 11, November 2025.
Abstract Global Navigation Satellite Systems radio occultation (RO) is a valuable and relevant source of information from the atmosphere. Many efforts have been made to provide methods of validation of RO profiles, however, no clear methodology for filtering the profiles from RO can be easily found.
Gabriel O. Jerez   +3 more
wiley   +1 more source

Influência do anabolizante decanoato de nandrolona sobre a viabilidade de células satélites musculares em processo de diferenciação

open access: yes, 2014
Os anabolizantes sao utilizados, especialmente por atletas, com o intuito de aumento da massa muscular e melhora do desempenho. Este estudo objetivou avaliar o efeito do anabolizante Deca-Durabolin(r) sobre a viabilidade (proliferacao) de celulas ...
Beatriz Guimarães Ribeiro   +5 more
semanticscholar   +1 more source

The Role of Protected Areas in Combating Tropical Dry Forest Loss: Insights From Kirindy Mitea National Park, Madagascar

open access: yesBiotropica, Volume 57, Issue 6, November 2025.
Tropical dry forests face severe threats from deforestation, endangering both people and wildlife. This study examines the effectiveness of Kirindy Mitea National Park (KMNP) in Madagascar in preventing forest loss from 1993 to 2023 using satellite imagery.
Domenic Romanello   +4 more
wiley   +1 more source

Los cariotipos de Cologania grandiflora y Erythrina americana (Leguminosae- Papilionoideae-Phaseoleae) de la Reserva Ecológica del Pedregal de San Ángel, México Karyotypes of Cologania grandiflora and Erythrina americana (Leguminosae-Papilionoideae- Phaseoleae) of Reserva Ecológica del Pedregal de San Ángel, Mexico

open access: yesRevista Mexicana de Biodiversidad, 2011
Se analizaron citogenéticamente células provenientes de meristemos radiculares de 2 leguminosas, Cologania grandiflora y Erythrina americana, que en la actualidad están incluidas en la flora de la Reserva Ecológica del Pedregal de San Ángel, México, D. F.
Fernando Tapia-Pastrana   +1 more
doaj  

Reconstructing historical catch trends of threatened sharks and rays based on fisher ecological knowledge

open access: yesConservation Biology, Volume 39, Issue 5, October 2025.
Abstract Small‐scale fisheries often lack historical shark and ray catch information, hampering their management. We reconstructed historical catch trends and current fishing pressure by combining local ecological knowledge, satellite‐based vessel counts, and a short‐term landing‐site survey.
Guido Leurs   +15 more
wiley   +1 more source

DISTRIBUIÇÃO ESPACIAL DA PRECIPITAÇÃO SOBRE O RIO GRANDE DO NORTE: ESTIMATIVAS VIA SATÉLITES E MEDIDAS POR PLUVIÔMETROS

open access: yes, 2012
RAINFALL SPATIAL DISTRIBUTION OVER THE RIO GRANDE DO NORTE BRAZILIAN STATE: SATELLITES ESTIMATES AND RAIN GAUGES MEASUREMENTS The aim of this study was to evaluate the monthly rainfall estimates obtained by two data sources (3B43_V6 algorithm and ...
C. Silva   +2 more
semanticscholar   +1 more source

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