Results 11 to 20 of about 688 (193)

Estudio de la ondulación del geoide

Uniciencia, 2004
Se describe una metodología alternativa para determinar la ondulación del geoide en un área de 4x4 minutos de arco en los alrededores de la Escuela de Topografía, Catastro y Geodesia de la Universidad Nacional en Costa Rica.
Jorge Moya Zamora, Esteban Dörries B
doaj   +4 more sources

Gravimetría aérea para la determinación del geoide local

Uniciencia, 2004
En el presente artículo se describe la estimación del geoide local usando la componente vertical del vector de perturbación de gravedad obtenida a partir de un vuelo gravimétrico.
Juan Gilberto Serpas
doaj   +4 more sources

A SEPARAÇÃO ENTRE O GEOIDE E O QUASE GEOIDE: UMA ANÁLISE NO CONTEXTO BRASILEIRO [PDF]

Revista Brasileira de Cartografia, 2011
Trata da separação entre o geoide e o quase geoide avaliando as metodologias tradicionalmente empregadas para a quantificação desta separação. O conhecimento da separação entre o geoide e o quase geoide com precisão na ordem do centímetro, é essencial ...
Vagner Gonçalves Ferreira, Silvio Rogério Correia de Freitas, Bernhard Heck   +2 more
doaj   +2 more sources

Determinación de la exactitud vertical del modelo geométrico del geoide MGH44 mediante la aplicación del estándar de la NSSDA

Uniciencia, 2010
El modelo geométrico del geoide MGH44 es el resultado de una comparación directa entre mediciones GPS y de nivelación convencional sobre puntos de una red geodésica ubicada en la zona urbana de 50 km2 de la ciudad de Heredia, Costa Rica.
Jorge Moya Zamora
doaj   +5 more sources

Modelación del geoide en presas de colas de la región minera de Moa

Minería y Geología, 2014
El presente trabajo tuvo el propósito de determinar el modelo del geoide en las presas de colas de la región minera de Moa, con el fin de obtener las alturas de puntos sobre la superficie del terreno con la exactitud que requiere el movimiento de tierras,
Yordanis Esteban Batista-Legrá, Santiago Bernal-Hernández, Orlando Belete-Fuentes   +2 more
doaj   +1 more source

Crustal Structure Beneath Mexico City From Joint Inversion of Receiver Functions and Dispersion Curves

Journal of Geophysical Research: Solid Earth, Volume 128, Issue 8, August 2023., 2023
Abstract Over the years, it has been clear to seismologists that the crustal structure beneath Mexico City is highly complex. This fact may influence the seismic waves' behavior when traveling through it. Consequently, many studies have been done to understand this crustal structure.
Manuel J. Aguilar‐Velázquez, Xyoli Pérez‐Campos, Olivia Pita‐Sllim   +2 more
wiley   +1 more source

Canadian contributions to environmetrics

Canadian Journal of Statistics, Volume 50, Issue 4, Page 1355-1386, December 2022., 2022
Abstract This article focuses on the importance of collaboration in statistics by Canadian researchers and highlights the contributions that Canadian statisticians have made to many research areas in environmetrics. We provide a discussion about different vehicles that have been developed for collaboration by Canadians in the environmetrics context as ...
Charmaine B. Dean, Abdel H. El‐Shaarawi, Sylvia R. Esterby, Joanna Mills Flemming, Richard D. Routledge, Stephen W. Taylor, Douglas G. Woolford, James V. Zidek, Francis W. Zwiers   +8 more
wiley   +1 more source

Analysis of plant secondary metabolism using stable isotope‐labelled precursors

Phytochemical Analysis, Volume 32, Issue 1, Page 62-68, January/February 2021., 2021
Abstract Introduction Analysis of biochemical pathways typically involves feeding a labelled precursor to an organism, and then monitoring the metabolic fate of the label. Initial studies used radioisotopes as a label and then monitored radioactivity in the metabolic products.
Randolph R.J. Arroo, Avninder S. Bhambra, Christophe Hano, Gülin Renda, Ketan C. Ruparelia, Meng F. Wang   +5 more
wiley   +1 more source

A Chilean Berry Concentrate Protects against Postprandial Oxidative Stress and Increases Plasma Antioxidant Activity in Healthy Humans

Oxidative Medicine and Cellular Longevity, Volume 2017, Issue 1, 2017., 2017
This study formulated and characterized an antioxidant‐rich concentrate of berries (BPC‐350) produced in Chile, which was used to perform a crossover study aimed at determining the effect of the berries on the modulation of plasma postprandial oxidative stress and antioxidant status.
Ines Urquiaga, Felipe Ávila, Guadalupe Echeverria, Druso Perez, Sebastian Trejo, Federico Leighton, Maura Palmery   +6 more
wiley   +1 more source

Medicinal Plants from North and Central America and the Caribbean Considered Toxic for Humans: The Other Side of the Coin

Evidence-Based Complementary and Alternative Medicine, Volume 2017, Issue 1, 2017., 2017
The consumption of medicinal plants has notably increased over the past two decades. People consider herbal products as safe because of their natural origin, without taking into consideration whether these plants contain a toxic principle. This represents a serious health problem.
Angel Josabad Alonso-Castro, Fabiola Domínguez, Alan Joel Ruiz-Padilla, Nimsi Campos-Xolalpa, Juan Ramón Zapata-Morales, Candy Carranza-Alvarez, Juan Jose Maldonado-Miranda, Karin Kraft   +7 more
wiley   +1 more source