Results 61 to 70 of about 91,151 (216)

Infragravity Frequency Wave‐Driven Bottom Boundary Layer Turbulence in Shallow Estuaries

open access: yesJournal of Geophysical Research: Oceans, Volume 130, Issue 3, March 2025.
Abstract We use turbulent dissipation measurements from a small estuary to determine how and when infragravity (IG) waves (periods ∼ ${\sim} $25–250 s) increase turbulence due to bottom friction. The frequency of IG waves leads to a larger wave boundary layer than for sea and swell waves.
Duncan C. Wheeler   +3 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

Mirax: A Brazilian X-Ray Astronomy Satellite Mission [PDF]

open access: yes, 2003
We describe the ``Monitor e Imageador de Raios-X'' (MIRAX), an X-ray astronomy satellite mission proposed by the high energy astrophysics group at the National Institute for Space Research (INPE) in Brazil to the Brazilian Space Agency.
Boella   +28 more
core   +2 more sources

Climate Models Struggle to Simulate Observed North Pacific Jet Trends, Even Accounting for Tropical Pacific Sea Surface Temperature Trends

open access: yesGeophysical Research Letters, Volume 52, Issue 4, 28 February 2025.
Abstract We show that the wintertime (December‐January‐February) North Pacific jet in ERA5 has shifted northwards over the satellite‐era (1979–2023) at a faster rate than any of the state‐of‐the‐art coupled climate models used in this study. Differences in tropical sea surface temperature (SST) trends can only partially explain the discrepancy in jet ...
Matthew Patterson   +1 more
wiley   +1 more source

Yield prediction models for some wheat varieties with satellite‐based drought indices and machine learning algorithms

open access: yesIrrigation and Drainage, Volume 74, Issue 1, Page 237-250, February 2025.
Abstract In recent years, frequent drought events in Konya, one of Türkiye's most important cereal production centres, have led to increased pressure on water and soil resources, resulting in yield losses, particularly in wheat production. Alternative yield prediction models, especially those that play a crucial role in agricultural import–export ...
Muhammed Cem Akcapınar, Belgin Çakmak
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  

Valencia testea el funcionamiento de los satélites del sistema Galileo

open access: yes, 2011
Lugar: CPI Protagonistas: Vicente Boria, David Raboso Tipo de evento: investigaciónDesde el Laboratorio Europeo de Alta Potencia en Radiofrecuencia del VSC y la ESA se están evaluando las prestaciones de un componente que forma parte del NAVANT, el ...
Zurano Conches, Luis
core  

Sistemas orbitais e geoprocessamento: informação para uma integração sinergética. [PDF]

open access: yes, 2014
Apesar da expansão do mercado de geoprocessamento no Brasil, ainda são marcantes as carências de informação sobre temas específicos, tais como os sistemas orbitais mais utilizados em aplicações para a agricultura e o meio ambiente.
BATISTELLA, M.   +3 more
core  

Alternative method for information georeferencing coordinate system magna-sirgas [PDF]

open access: yes, 2015
El posicionamiento preciso de puntos por sus siglas en ingles PPP, representa un método alternativo y de bajo costo que permite la georreferenciación de mojones o vértices de apoyo, que posteriormente, a partir de ellos, permitirán la captura de ...
Méndez Ramírez, Javier Jovani
core  

Satélites y algo más

open access: yesChasqui, 2015
Para alcanzar la integración, la comunicación vía satélite es imprescindible para intentar modificar las actitudes de los segmentos sociales.Todo depende del interés que manifieste el Estado y los medios de comunicación públicos y privados.
Fausto Jaramillo
doaj   +1 more source

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