Results 171 to 180 of about 1,061,624 (280)

Proyecto de tecnificación tercera etapa, control y normalización de insumos y productos agropecuarios. Resumen del Proyecto

open access: yes, 1986
Capitulo 1Este Proyecto consta de los siguientes seis subproyectos: investigación agropecuaria; extensión agropecuaria; sanidad agropecuaria; control y normalización de insumos y productos agropecuarios; semillas, y reproductores e inseminación ...
Centro de Proyectos de Inversión (CPI). Instituto Interamericano de Cooperación para la Agricultura (IICA)   +2 more
core  

Cortical gray–white matter contrast alterations precede amyloid‐β positivity and macrostructural changes in older adults without dementia

open access: yesAlzheimer's &Dementia, Volume 22, Issue 6, June 2026.
Abstract INTRODUCTION Early Alzheimer's disease (AD) involves subtle cortical changes that may precede atrophy. Magnetic resonance imaging (MRI) microstructural markers may detect earlier pathology than classical morphometry. METHODS We analyzed cross‐sectional MRI and amyloid‐β (Aβ) positron emission tomography (PET) data from 1323 non‐demented AMYPAD
Leonard Pieperhoff   +34 more
wiley   +1 more source

Proyecto de innovación tecnológica: Difusión de sistemas riego por goteo de baja presión para frijol en rotación

open access: yes, 2012
Posee anexos y cuadros.Este documento posee información del Proyecto de innovación tecnológica: Difusión de sistemas riego por goteo de baja presión para frijol en rotación, en el cual se realiza una descripción del proyecto donde se abordan datos de ...
Instituto Interamericano de Cooperación para la Agricultura (IICA)   +3 more
core  

Wild Seasons, Urban Stasis: Anthropogenic Food Subsidies Buffer Seasonal Dietary Shifts for Coyotes (Canis latrans) in a Wildland‐Urban Landscape South of Mexico City

open access: yesEcology and Evolution, Volume 16, Issue 6, June 2026.
Coyote populations are expanding into urban areas, and this study examines how their diet adapts along a gradient from conserved to human‐modified habitats. Mammals dominated the diet at both sites, and there was no significant difference in annual dietary diversity between the conserved and modified areas.
Andrés Arias‐Alzate   +4 more
wiley   +1 more source

Proyecto de desarrollo rural Saraguro-Yacuambi-Loja: Ecuador: Documento principal

open access: yes, 1991
124 páginas: pdfEl documento presenta los antecedentes y contexto económico y sectorial del proyecto, así como también las actividades del FIDA en el Ecuador.
Fondo Internacional de Desarrollo Agrícola (FIDA)   +3 more
core  

Epistemic opacity in Antarctic science: Unknowing the last frontier

open access: yesPeople and Nature, Volume 8, Issue 6, Page 1641-1647, June 2026.
Abstract Antarctica is facing intensifying pressures from climate change, industrial fishing, tourism and renewed geopolitical competition, even as scientific activity on the continent reaches unprecedented levels. We argue that this proliferation of research often fails to deliver the integrated, policy‐relevant knowledge needed for precautionary ...
Virginia Morandini, Álvaro Soutullo
wiley   +1 more source

Sensorimotor integration, nutrition and gut microbiota in Ecuadorian autistic children - "Proyecto Wiñay": a research protocol for a comparative cross-sectional study. [PDF]

open access: yesFront Psychiatry
Yago X   +14 more
europepmc   +1 more source

Snapshots of Motion: A Novel Structural Intermediate Reveals Conserved Dynamics in Archaeal DNA Ligases

open access: yesProteins: Structure, Function, and Bioinformatics, Volume 94, Issue 6, Page 1245-1258, June 2026.
ABSTRACT We present the first x‐ray crystallographic structural evidence of an archaeal DNA ligase showing the AMP covalent adduct together with further cofactor hydrolysis, capturing a transient intermediary in the first step of the ligation reaction, triggered by the pyrophosphate hydrolysis.
A. X. Quintana‐Armas   +3 more
wiley   +1 more source

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