Results 61 to 70 of about 4,810 (227)

Integrative Approach for the Identification and Delimitation of Orthops Species (Heteroptera, Miridae, and Mirinae) in the Palearctic

open access: yesJournal of Zoological Systematics and Evolutionary Research, Volume 2024, Issue 1, 2024.
Orthops is a widely distributed plant bug genus comprising 35 species. Its nominotypical subgenus includes seven species mostly known from the Palearctic, and four of them are widely distributed. Most of them live in sympatry having only little morphological differences. The species limits have never been tested using the molecular data.
Polina A. Dzhelali   +2 more
wiley   +1 more source

Bienestar subjetivo y crecimiento económico: analizando la paradoja del crecimiento infeliz en la Encuesta Mundial Gallup

open access: yesEconómica, 2013
La “paradoja del crecimiento infeliz” que encuentran tanto Lora y Chaparro (2008) como Deaton (2008) en la Encuesta Mundial Gallup (EMG) de 2006 es inconsistente con la literatura en términos del impacto del ingreso sobre el bienestar en el corto plazo.
Pablo Alfredo Gluzmann
doaj  

Distribution of intimin subtypes among Escherichia coli isolates from ruminant and human sources [PDF]

open access: yes, 2003
The intimin gene eae, located within the locus of enterocyte effacement pathogenicity island, distinguishes enteropathogenic Escherichia coli (EPEC) and some Shiga toxin-producing E. coli (STEC) strains from all other pathotypes of diarrheagenic E. coli.
Ramachandran, V.   +6 more
core   +1 more source

An analytical approach for predicting pilot induced oscillations [PDF]

open access: yes, 1981
The optimal control model (OCM) of the human pilot is applied to the study of aircraft handling qualities. Attention is focused primarily on longitudinal tasks.
Hess, R. A.
core   +1 more source

Análisis jerárquico de la dinámica económica de las comunidades españolas en el periodo 1955-2009

open access: yesInvestigaciones Regionales - Journal of Regional Research, 2015
El objetivo de este trabajo es estudiar la dinámica económica de las regiones de España durante el periodo 1955-2009. Para ello, introducimos dos métricas que nos permiten comparar su desempeño económico; una basada en la noción de correlación y otra en ...
Juan Gabriel Brida   +2 more
doaj  

Efectos de derrame y de alimentación industrial en América del Norte: un enfoque nacional e internacional

open access: yesEnsayos Revista de Economía, 2012
Una estrategia económica empleada por las naciones ha sido la formación de bloques comerciales bajo la teoría de las ventajas comparativas. Sin embargo, la evidencia empírica muestra que los multiplicadores del comercio sobre la estructura económica no ...
Marco Antonio Márquez Mendoza
doaj  

Comparing Three Water Quality Sampling Techniques for Measuring Non-Point Source Pollution in Forest Streams [PDF]

open access: yes, 1981
Coshocton wheel samplers, ISCO pumping samplers, and single stage samplers were compared on each of three small (5-6 ha), forested watersheds in the Ouachita Mountains of central Arkansas.
Beasley, R. Scott
core   +2 more sources

Microstructure-property relationships in Al-Cu-Li-Ag-Mg Weldalite (tm) alloys, part 2 [PDF]

open access: yes
The microstructure and mechanical properties of the ultrahigh strength Al-Cu-Li-Ag-Mg alloy, Weldalite (tm) 049, were studied. Specifically, the microstructural features along with tensile strength, weldability, Young's modulus and fracture toughness ...
Langan, T. J., Pickens, J. R.
core   +1 more source

Effect of Li level, artificial aging, and TiB2 reinforcement on the fracture toughness of Weldalite (tm) 049-type alloys [PDF]

open access: yes
Plane strain fracture toughness (K sub IC) was evaluated for Weldalite (tm) 049 with and without TiB2 reinforcement. For the nonreinforced variant, changes in toughness were measured for various aging conditions and lithium levels.

core   +1 more source

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