Results 61 to 70 of about 3,794 (199)

Cryptic diversity and recent diversification in the Pyrrhulina australis species complex (Characiformes, Lebiasinidae) revealed by mitochondrial DNA

open access: yesJournal of Fish Biology, EarlyView.
Abstract Pyrrhulina australis Eigenmann & Kennedy, 1903, is widely distributed across the main hydrographic basins of South America. The taxonomic integrity of this species is nevertheless challenged by the lack of clear diagnostic characters, its marked geographic variation and the morphological overlap with its congeners. In this context, the present
Taina Barbosa De Souza   +6 more
wiley   +1 more source

Elevation shapes alpine snow algal blooms and their influence on albedo reduction

open access: yesNew Phytologist, EarlyView.
Graphical summary of elevational trends in Sanguina‐dominated snow algal blooms. Increasing elevation was associated with larger cells, lower Chla content per cell, higher astaxanthin ratios, lower snow water content, and reduced cell‐normalized albedo, whereas algal cell density showed no consistent elevational trend.
Pablo Almela   +5 more
wiley   +1 more source

Diseños de observación longitudinales: cambio intra-individual y diferencias inter-individuales observados durante la infancia [PDF]

open access: yes, 2015
The study of change in repeated measures studies or longitudinal studies (cross-sectional and/or cross-sequential) is of considerable interest in the field of developmental psychology.
Escolano-Pérez, Elena   +1 more
core   +2 more sources

Estudio longitudinal y transversal de metas de logro 3×2 y autodeterminación en el contexto de la educación física

open access: yesApunts: Educación Física y Deportes, 2021
Los objetivos principales de los siete estudios empíricos que conforman esta tesis pretenden 1) analizar la evolución del modelo de metas de logro 3x2 y estudiar los patrones de relación con variables resultado, como las regulaciones motivacionales ...
Cristina García Romero
doaj  

The Bumps in the Road Toward Social Equity Budgeting: The Administrative Pitfalls When Implementing Participatory Budgeting

open access: yesPublic Administration, EarlyView.
ABSTRACT Participatory budgeting can encourage meaningful community engagement in all phases of the budgeting cycle to promote social equity. However, participatory budgeting administrators often experience administrative and political challenges in establishing participatory processes that effectively promote social equity.
Michelle L. Lofton   +1 more
wiley   +1 more source

Efecto protector del apoyo social en la mortalidad en población anciana: un estudio longitudinal

open access: yesRevista Española de Salud Pública, 2002
Fundamentos: El objetivo principal del estudio es analizar la relación entre el apoyo social y la mortalidad en una cohorte de población de 60 años o más, residente en Barcelona y no institucionalizada, observada durante el período de seguimiento de 1996
Nebot Manel   +4 more
doaj  

Asociación entre la discapacidad física y la incidencia de síntomas depresivos en adultos mayores mexicanos

open access: yesBiomédica: revista del Instituto Nacional de Salud, 2020
Introducción. Las limitaciones funcionales asociadas con el proceso de envejecimiento pueden conducir al desarrollo de síntomas depresivos e incrementar la vulnerabilidad de los adultos mayores. Objetivo.
Karen Luna-Orozco   +2 more
doaj   +1 more source

Facets of Crises: How Problem Indicators and Public Perceptions Affect Policy Change

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT Crises are widely acknowledged as catalysts for policy change. Yet, our understanding of the policy effects of crises remains limited. Why do only some crises lead to major changes, while significant policy changes also occur during seemingly non‐crisis periods?
Constantin Kaplaner   +6 more
wiley   +1 more source

50% body weight loading reduces stature increases and lumbar disc expansion from 4 h hyper‐buoyancy floatation versus 15 min sitting upright

open access: yesExperimental Physiology, EarlyView.
Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo   +6 more
wiley   +1 more source

ANTECEDENTES HISTÓRICOS DEL ESTUDIO DEL CRECIMIENTO GENERAL Y CRANEOFACIAL HUMANO EN LA PRIMERA INFANCIA

open access: yesActa Odontológica Colombiana, 2012
En la primera infancia de 0 a 3 años, el crecimiento general y craneofacial muestra grandes cambios en cuanto a velocidad, tamaño, forma y función, atribuidos a factores genéticos y ambientales.
Laila Yaned González Bejarano
doaj  

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