Results 151 to 160 of about 2,942,312 (345)

Desenvolvimento regional: a diversidade regional como potencialidade

open access: yes, 2013
Ao longo da segunda metade do século XX o debate sobre desenvolvimento regional no Brasil recebeu atenção especial, principalmente, entre economistas e geógrafos.
Degrandi, José Odim   +1 more
core   +1 more source

Multi‐Scale Characterization of PLA Composites With Natural‐Based Reinforcements: From Filament to 3D‐Printed Parts

open access: yesPolymer Composites, EarlyView.
Thermal, microstructural, and mechanical characterization of 3D‐printed PLA composite parts. ABSTRACT To address plastic waste and agricultural residue underutilization, this study evaluates the thermal (DSC and FTIR), microstructural (SEM), and mechanical behavior of polylactic acid (PLA) reinforced with flax fibers and olive pit particles, processed ...
P. N. B. Reis   +6 more
wiley   +1 more source

Aggregation‐induced enhanced emission for quantification of recycled content in automotive plastics

open access: yesPolymer International, EarlyView.
Quantifying recycled content in four automotive plastics using aggregation‐induced enhanced emission showed that performance was highly dependent on both polymer and additive chemistries. Abstract The use of plastics in the automotive industry is increasing due to their versatility, light weight and affordability.
Saleh S Soomro   +2 more
wiley   +1 more source

Approaching Standardization of Bovine Ovarian Cortex Cryopreservation: Impact of Cryopreservation Protocols and Tissue Size on Preantral Follicle Population

open access: yesAnimals
Cryopreservation of bovine ovarian cortical tissue offers a promising strategy for preserving female fertility and genetic resources, yet outcomes remain variable and influenced by both protocol and tissue size.
Paula Romero   +6 more
doaj   +1 more source

Crisis del Café y el Desarrollo Regional

open access: yesCuadernos de Economía, 2003
<p>Aguilar, Luis Ignacio. "Crisis del Café y el Desarrollo Regional", cuadernos de Economía, V. XXII, n. 38, Bogotá, 2003, páginas 239-272.</p><p>Este articulo describe y analiza la situación de precios internacionales del café y su impacto en el sector cafetero colombiano.
openaire   +3 more sources

Extruder‐based 3D printing of eco‐friendly polymers

open access: yesPolymer International, EarlyView.
Eco‐friendly polymers, such as biodegradable and recycled materials, offer significant potential for the production of high‐quality 3D‐printed components, provided that their properties and characteristics meet the requirements of extruder‐based 3D printing.
Rui Zhang   +7 more
wiley   +1 more source

Plan regional de desarrollo del sector agropecuario de la IV region: Anexos

open access: yes, 1977
Este documento, contiene los anexos del Plan regional de desarrollo del sector agropecuario de la IV region, los cuales abarca la situación actual y perspectiva de la región en relación a los problemas originados por la escasez de agua; los aportes del ...
Momberg, Alfonso   +3 more
core  

Permafrost Distribution in the Canadian Rockies: Key Variables Influencing Patch‐Scale Variability

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT The spatial distribution of permafrost in mountainous regions is influenced by various factors such as topography, climate, vegetation, and substrate. Despite the existence of comprehensive permafrost maps at national and global levels, they fail to accurately represent the patch‐scale (e.g., < 25 m) permafrost distribution in characteristic ...
Gerardo Zegers   +2 more
wiley   +1 more source

Corporación Autónoma Regional de Cundinamarca - CAR : Informe de gestión 2002

open access: yes, 2002
Con la aprobación del Plan de Gestión Ambiental Regional, la Corporación cuenta con un instrumento que le permite cambiar el modelo de gestión basado en la figura de autoridad ambiental, por uno en el cual. si bien se mantiene esta figura.
Corporación Autónoma Regional de Cundinamarca - CAR
core  

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