Results 81 to 90 of about 86,518 (167)

Dose‐Dependent Effect of Plant Volatiles on the Oviposition Preference of the Corn Leafhopper Dalbulus maidis

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT Maize (Zea mays L.) is a major annual crop cultivated worldwide. In the Americas, the corn leafhopper Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae) is a key pest of this crop, causing direct damage to plants through phloem feeding and indirect damage by transmitting phytopathogens.
Tatiane Cristina Barbosa Cândido   +3 more
wiley   +1 more source

Comparative advantage, economic growth and free trade Vantagem comparativa, crescimento econômico e livre comércio

open access: yesRevista de Economia Contemporânea, 2005
The paper has two objectives. The first is to discuss whether developing countries can benefit by specializing according to their comparative advantage.
Julio López Gallardo
doaj   +1 more source

Comercio exterior en Colombia: política, instituciones, costos y resultados

open access: yes, 2019
El libro examina el desempeno del sector externo colombiano desde 1950 con enfasis en las politicas de comercio exterior, las instituciones que disenan y ejecutan la politica, y los efectos de la proteccion sobre los costos de participar en el comercio ...
J. García-García   +8 more
semanticscholar   +1 more source

Unión Europea y Japón: ¿El tratado de libre comercio más grande del mundo?

open access: yesRevista de ciencias sociales, 2019
espanolDurante mas de un lustro la Union Europea y Japon han venido llevando a cabo una compleja negociacion para alcanzar la firma de un Tratado de Libre Comercio que reduzca en general las barreras arancelarias e igualmente las no arancelarias a razon ...
J. J. B. Rojas, Giovanny Montoya
semanticscholar   +1 more source

Beyond species means – the intraspecific contribution to global wood density variation

open access: yesNew Phytologist, EarlyView.
Summary Wood density is central for estimating vegetation carbon storage and a plant functional trait of great ecological and evolutionary importance. However, the global extent of wood density variation is unclear, especially at the intraspecific level. We assembled the most comprehensive wood density collection to date, including 109 626 records from
Fabian Jörg Fischer   +105 more
wiley   +1 more source

Cooperativismo 2.0: presencia en Internet y desarrollo del comercio electrónico en las cooperativas oleícolas de Cataluña

open access: yes, 2017
El papel de las TIC en la gestion empresarial constituye actualmente un tema de creciente interes tanto para academicos como para profesionales. La Web 2.0 se ha revelado como una importante fuente de innovacion que contribuye al desempeno organizacional
E. C. Fransi   +2 more
semanticscholar   +1 more source

Comercio electrónico como herramienta complementaria en las pymes en México

open access: yesEtic@net. Revista científica electrónica de Educación y Comunicación en la Sociedad del Conocimiento, 2018
Este trabajo de investigación muestra de forma significativa las principales causas y motivos por los cuales las pequeñas y medianas empresas (PYMES) mexicanas deben de adentrarse en el uso del comercio electrónico y sus apps, debido a las tendencias ...
Sandra Luz Hernández Mendoza   +2 more
semanticscholar   +1 more source

From Hierarchical Capitalism to Developmental Governance: The Emergence of Concerted Skills Formation in Middle‐Income Countries

open access: yesRegulation &Governance, EarlyView.
ABSTRACT Skills formation is a pressing issue for middle‐income countries given the pace of technological change. In Latin America, scholars point to the hierarchical type of capitalism and its segmentalist skills formation system as the main roadblocks to exiting the middle‐income trap.
Aldo Madariaga, Mariana Rangel‐Padilla
wiley   +1 more source

O Código Filipino, as Normas Camarárias e o comércio: mecanismo de vigilância e regulamentação comercial na Capitania do Rio Grande do Norte

open access: yesRevista Brasileira de História, 2014
O artigo propõe apresentar algumas considerações acerca das normas metropolitanas encetadas pelo Código Filipino e sua relação com a atuação do poder local municipal representado pelas Câmaras, notadamente, nos aspectos relacionados à vigilância e à ...
Tiago Alves Dias
doaj   +1 more source

Production of Elastomeric Composites With Different Methods of Incorporating of Graphene Nanoplatelets Into SBR Latex

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 11, March 15, 2026.
This study explores scalable methods of incorporating graphene nanoplatelets into SBR latex with or without a surfactant, using either powder or a masterbatch. Results show that combining a masterbatch with the surfactant DTAB improves vulcanization speed, mechanical strength, hardness, thermal conductivity, and resistance to aging.
Micaela D. Ferrari   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy