Results 21 to 30 of about 603,487 (169)

Pesadas sorprendentes, cálculos ingeniosos y muchas tablas [PDF]

open access: yes, 2010
Soluciones a los ejercicios propuestos en el anterior NÚMEROS, con especial incidencia en la metodología de su resolución. Comentarios sobre problemas anteriores. Comentarios de nuestros lectores. Los Torneos de Problemas. Nueva propuesta de problemas de
García, Manuel, Rupérez, José Antonio
core   +1 more source

PARAMETRIC STUDY OF THE INFLUENCE OF WIND ON THE DESIGN OF STEEL TUBULAR TOWERS WITH DIFFERENT GEOMETRIES ACCORDING TO THE EUROCODES

open access: yesce/papers, Volume 9, Issue 1, Page 374-383, April 2026.
Abstract The geometries of metallic tubular towers directly influence the interaction between wind action and the structural response of the tower itself. Analyzing these configurations and understanding how this interaction occurs is fundamental for proper structural design.
Márcio Carvalho   +4 more
wiley   +1 more source

HidroEsta, software para cálculos hidrológicos y estadísticos aplicados a la Hidrología [PDF]

open access: yes, 2013
Este trabajo de investigación desarrollado en el 2004 en el TEC, se orientó a la elaboración de una herramienta computacional bajo el título HidroEsta, software para cálculos hidrológicos, utilizando Visual Basic.
Villón, Maximo
core  

Multi‐Occupancy in CO2 Clathrate Hydrates: A Quantum Chemistry Study From Finite‐Size Cages to Crystals

open access: yesSmall Structures, Volume 7, Issue 4, April 2026.
How many CO2 molecules can a single clathrate‐like cage truly confine? This quantum‐chemistry study reveals multi‐occupancy and lattice‐driven stabilization effects. From isolated cages to full crystals, it uncovers how dispersion forces govern storage capacity, exposing sII hydrates as standout candidates for high‐density CO2 capture.
Miguel Morales‐Quijano   +2 more
wiley   +1 more source

Nuestra experiencia en nefrolitotomía anatrófica por litiasis coraliforme

open access: yesCirugía del Uruguay, 1981
Se comenta la ind,icación quirúrgica de· la Litíasis Coraliorme y la táctica y la técnica a seguir.
Luis Bonavita Páez   +4 more
doaj  

Evaluación del efecto antiurolítico del fruto de Parmentiera aculeata en rata Wistar

open access: yesBotan‪ical Sciences, 2015
En un modelo murino de litiasis vesical, se evaluó la actividad antiurolítica de los extractos hexánico, clorofórmico, metanólico y acuoso de Parmentiera aculeata (Kunth) Seem. (Bignoniaceae).
Viridiana Morales-Sánchez   +4 more
doaj   +1 more source

Alguns cálculos de Ends de Grupos

open access: yesCQD Revista Eletrônica Paulista de Matemática, 2023
A Teoria de Ends de Grupos é bastante relevante em Álgebra Homológica. Nesta área, o conceito de ends de grupos, definido algebricamente por Specker em 1950, está relacionado com a dimensão de um espaço quociente sobre Z_2.
Mateus Fernando Araújo Silva   +1 more
doaj   +1 more source

estar: An R package to measure ecological stability

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 4, Page 1090-1100, April 2026.
Abstract Assessing ecological stability is a key task in biodiversity monitoring and conservation. Quantifying stability is not trivial because its different aspects can be measured with various properties. However, to date, no software enables measuring different stability properties on ecological time‐series data.
Ludmilla Figueiredo   +6 more
wiley   +1 more source

Ungulate prey availability to inform Mexican wolf recovery within its historical range

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 2, February 2026.
We estimated the potential ecological carrying capacity for the Mexican wolf based exclusively on ungulate prey biomass estimated from camera trap surveys. In the United States, the potential density estimate is high (21.4–52.7 wolves/1,000 km2) owing to the presence and relatively high densities of elk, mule deer, and white‐tailed deer.
Alejandro González‐Bernal   +6 more
wiley   +1 more source

Litiasis vesicular

open access: yesCirugía del Uruguay, 1984
Estudio retrospectivo de 81 enfermos coleclstecto• mlzados y en los cuales se efectuó C.1.0. que reunieron los siguientes requisitos: litiasis vesicular única o múltiple con cálculos mayores de 3 cm de diámetro, cístico fino, no palpación de cálculos en ...
Jorge González   +4 more
doaj  

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