Results 1 to 10 of about 9,445 (103)

Elementos geomorfológico-cuantitativos del piedemonte nororiental del volcán Nevado de Toluca [PDF]

open access: yesCiencia Ergo Sum, 2003
A partir de un análisis cuantitativo y morfométrico, se determina la geodinámica del piedemonte nororiental del volcán Nevado de Toluca. Se destaca la relación entre el material, las formas heredadas y la energía que dinamiza el noreste del volcán.
Luis Miguel Espinosa Rodríguez
doaj   +1 more source

Propiedades morfométricas, fisicoquímicas y actividad antiproliferativa de maíces pigmentados de Guerrero

open access: yesNova Scientia, 2021
Introducción: Guerrero se caracteriza por su amplia variedad de maíces pigmentados, sin embargo, no existen alternativas de aprovechamiento para generar un valor agregado y un impacto positivo en la economía de los productores.
Yanik I. Maldonado-Astudillo   +8 more
doaj   +1 more source

Reativação Tectônica Quaternária no Domínio Sul da Província Borborema, NE do Brasil: Integração de Dados Morfométricos, Geológicos e Geofísicos da Bacia do Rio Una [PDF]

open access: yesAnuário do Instituto de Geociências, 2020
Integração de dados em diferentes escalas foi realizada com o objetivo de identificar possíveis efeitos de reativações tectônicas cenozoicas (pós-rifte), relacionadas ao embasamento adjacente à Bacia Pernambuco, sobre o qual está localizada a bacia ...
Osvaldo José Correia Filho   +8 more
doaj   +1 more source

3D pollination biology using micro‐computed tomography and geometric morphometrics in Theobroma cacao

open access: yesApplications in Plant Sciences, Volume 11, Issue 5, September-October 2023., 2023
Abstract Premise Imaging technologies that capture three‐dimensional (3D) variation in floral morphology at micro‐ and nano‐resolutions are increasingly accessible. In herkogamous flowers, such as those of Theobroma cacao, structural barriers between anthers and stigmas represent bottlenecks that restrict pollinator size and access to reproductive ...
Katherine A. Wolcott   +4 more
wiley   +1 more source

Proximity to metal mining is related to aspects of feather coloration but not fluctuating asymmetry in the Russet‐crowned Motmot (Momotus mexicanus) in south‐central Mexico

open access: yesIbis, Volume 165, Issue 2, Page 587-601, April 2023., 2023
Mining is present in all major biomes worldwide and overlaps strongly with areas of importance for bird conservation. Mining causes multiple types of environmental disturbance, including habitat alteration, increased human presence and persistent heavy metal pollution. Feather coloration and fluctuating asymmetry (random deviation from perfect symmetry
Lynna Marie Kiere   +5 more
wiley   +1 more source

Web databases of feather photographs are useful tools for avian morphometry studies

open access: yesEcology and Evolution, Volume 11, Issue 12, Page 7677-7684, June 2021., 2021
Wing area and aspect ratio are key variables for studies of avian comparative ecology, despite the complexity of measuring them both in living and in museum specimens. The systematic databases of feather photographs available on the Internet may offer an alternative way of obtaining such morphometric data.
Juan E. Malo, Cristina Mata
wiley   +1 more source

Dos cambios de rango taxonómico en Pseudognaphalium (Gnaphalieae, Asteraceae) de México

open access: yesActa Botanica Mexicana, 2020
Antecedentes y Objetivos: Pseudognaphalium es un género de la tribu Gnaphalieae (Asteraceae) segregado de Gnaphalium. Desde su separación en 1950, ha habido una serie de transferencias que cubren todos los taxones mexicanos.
José Ángel Villarreal Quintanilla   +2 more
doaj   +1 more source

Comparación de la eficacia de tres métodos dentales para estimar la edad de personas de 13 a 23 años

open access: yesOdontología Sanmarquina, 2021
Objetivo. Comparar la eficacia de tres métodos dentales (Demirjian, Gleiser-Hunt modificado y análisis morfométrico) para estimar la edad de personas de 13 a 23 años a partir del desarrollo radicular de los terceros molares inferiores. Métodos.
Carlos Suárez-Canlla   +5 more
doaj   +1 more source

Drainage basin morphometry of the Encadenadas del Oeste lakes, Argentina [PDF]

open access: yes, 2016
The Las Encadenadas basin can be defined as an endorheic fluviolacustrine system. The aim of this study is to identify hydrographic sectors and subbasins within the Encadenada’s drainage basin and analyze the former’s morphometric properties including ...
Geraldi, Alejandra Mabel   +2 more
core   +1 more source

El método morfométrico en el diagnóstico predictivo de la vía respiratoria anatómicamente difícil

open access: yesRevista Cubana de Anestesiología y Reanimación, 2016
Introducción: el objetivo principal en la evaluación clínica de la vía respiratoria es identificar factores predictores que conducen a intubaciones fallidas o traumáticas, a cancelación de procedimientos quirúrgicos y a exposición del paciente a hipoxia,
Jesús Deylis Picrin Dimot   +2 more
doaj   +4 more sources

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