Results 51 to 60 of about 121,065 (223)

Validation of daily growth increments and estimation of growth rates of larval and early juvenile black skipjack, Euthynnus lineatus, using otoliths [PDF]

open access: yes, 1993
ENGLISH: Increments in otoliths (sagittae) were examined, using light and scanning electron microscopy, to determine ages and estimate growth rates of larval and early-juvenile black skipjack, Euthynnus lineatus.
Wexler, Jeanne B.
core  

Role of forest edges and other seminatural linear landscape features in structuring wild bee habitat connectivity in intensively managed landscapes

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract Pollinator conservation schemes typically focus on conserving existing, restoring degraded, or creating new wild bee habitats. Their effectiveness depends on dispersal corridors enabling habitat colonization by bees. However, the role of seminatural linear landscape structures (LLS) in connecting pollinator communities across intensively ...
Markus A. K. Sydenham   +6 more
wiley   +1 more source

Direct piezoelectric effect d33 non-linearity in PZT ceramics [PDF]

open access: yes, 2006
Se ha implementado una nueva técnica de medida aplicando un esfuerzo uniaxial sobre la muestra y midiendo la carga generada. Se aplica un esfuerzo suficientemente intenso para producir efectos no lineales, y se analiza la respuesta no sólo en función de
Albareda Tiana, Alfonso   +5 more
core  

Impact of endometrial thickness on reproductive outcome in fresh and frozen–thawed embryo transfer: systematic review and meta‐analysis

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 3, Page 271-281, September 2025.
ABSTRACT Objective To evaluate the impact of endometrial thickness on the reproductive outcomes of embryo transfer (ET) treatments using both cut‐off‐based meta‐analysis and meta‐analysis of proportions. Methods This was a systematic review and meta‐analysis of comparative studies (randomized controlled trials, cohort studies, case–control studies) and
F. Pérez‐Milán   +10 more
wiley   +1 more source

El uso de perceptrones multicapa para la modelización estadística de series de tiempo no lineales de SO_2, en Salta Capital, Argentina

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2013
En este trabajo se realizó un estudio estadístico de variablesfísico químicas asociadas al fenómeno de contaminación ambiental,en particular concentración media mensual de SO2, medidas en la ciudad Salta Capital, Argentina, simultáneamente a ...
Haydeé Elena Musso   +1 more
doaj   +1 more source

Polideportivo junto al Parque Lineal Machángara linealidad como principio organizador de elementos programáticos diversos [PDF]

open access: yes, 2014
The major’s culmination project will be developed in San Bartolo parish given that it’s a high-density sector with lack of quality recreational and sports areas.
Amores Arellano, Diego Andrés
core  

Climatic disequilibrium modulates canopy service across abiotic stress gradients

open access: yesJournal of Ecology, Volume 113, Issue 8, Page 2160-2172, August 2025.
The results presented indicate that abiotic stressors, combined with climatic disequilibrium, modulate the canopy service. Consequently, under future climate change scenarios that may increase stress and climatic disequilibrium, canopy service will become crucial for the maintenance of the recruiting community.
Jordi Margalef‐Marrase   +5 more
wiley   +1 more source

ESTUDIO CEFALOMÉTRICO EN NIÑOS DE 3 A 6 AÑOS CON OCLUSIÓN DENTAL CLASE I PROCEDENTES DE MEDELLÍN

open access: yesRevista Facultad de Odontología Universidad de Antioquia, 2015
INTRODUCCIÓN:los pocos estudios hechos con radiografía cefálica lateral digital en niños menores de 6 años, hace necesario investigar en dicho grupo etario.
Julia Andrea Gómez Gómez   +4 more
doaj  

Amplificador de potencia Clase F en banda L basado en tecnología GaN [PDF]

open access: yes, 2012
This paper reports a high efficiency class-F power amplifier based on a gallium nitride high electron mobility transistor (GaN-HEMT), which is designed at the L band of 1640 MHz. The design is based on source and load pull measurements. During the design
Benavente Peces, César   +4 more
core  

CARACTERIZACION MORFOMETRICA DE LA CUENCA DEL RIO SEGURA: ESTUDIO CUANTITATIVO DE LAS FORMAS DE LAS SUBCUENCAS

open access: yesPapeles de Geografí­a, 1987
Se han analizado 19 parámetros morfométricos (11 correspondientes a sistemas lineales y 7 a sistemas superficiales) y dos parárnetros del medio físico (precipitación media anual y erosionabilidad del sustrato) en 61 subcuencas delimitadas en la Cuenca ...
M. R. Vidal-Abarca   +3 more
doaj  

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