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Mostrando ítems 2821-2830 de 7480
Mejoramiento en el proceso de diseño en proyectos
(2001)
In Latin America. metallic ores are abundant and diverse. However, few metal-tolerant and metal hyperaccumulator plants have been reported in the region in comparison with other areas of the world. This may be largely ...
Analysis of natural cis- and trans-polyisoprene mixtures by near-infrared spectrophotometry
(Elsevier B.V., 2000-01-01)
Natural trans- and cis-polyisoprenes and mixtures of these polymers were analysed by near-infrared spectrophotometry. The relative absorptivity data versus the amount of isomers in synthetic mixtures showed a non-linear ...
Biological notes on the parasitism of apoica flavissima Van der Vecht (Hymenoptera: Vespidae) by Seminota marginata (Westwood) (Hymenoptera: Trigonalidae): Are social paper wasps primary or secundary hosts of trigonalidae?
(2013-07-08)
Hosts of Trigonalidae include larvae of social paper wasps, which have been considered secondary hosts, supposedly following predation of the primary host (usually caterpillars) by adult wasps. This study provides observations ...
Flutuação populacional de Meloidogyne enterolobii em pomar de goiabeira (Psidium guajava)
(2010-09-01)
The objective of this work was to study the population fluctuation of Meloidogyne enterolobii in a commercial orchard of 'Paluma' guava with five years of age, under micro sprinkler irrigation system and usual practices ...
Control of lipase production by Rhizopus oligosporus under various growth conditions
(1988-01-01)
Some factors influencing the growth and production of extracellular lipase by Rhizopus oligosporus were studied. Highest yields of enzyme were obtained when Tweens were the carbon source. Soybean meal extract supported ...
Evaluación de un sustrato orgánico para el enraizamiento de las estacas de joyapa Macleania rupestris
(2016)
Macleania rupestris joyapa is a flowering plant from the Andes which is characterized by their multiple potential use. Mostly used by its fruits, it is commonly harvested from wild populations, and lacking rapid and efficient ...
Analysis of natural cis- and trans-polyisoprene mixtures by near-infrared spectrophotometry
(Elsevier B.V., 2000-01-01)
Natural trans- and cis-polyisoprenes and mixtures of these polymers were analysed by near-infrared spectrophotometry. The relative absorptivity data versus the amount of isomers in synthetic mixtures showed a non-linear ...
Control of lipase production by Rhizopus oligosporus under various growth conditions
(1988-01-01)
Some factors influencing the growth and production of extracellular lipase by Rhizopus oligosporus were studied. Highest yields of enzyme were obtained when Tweens were the carbon source. Soybean meal extract supported ...
Flutuação populacional de Meloidogyne enterolobii em pomar de goiabeira (Psidium guajava)
(2010-09-01)
The objective of this work was to study the population fluctuation of Meloidogyne enterolobii in a commercial orchard of 'Paluma' guava with five years of age, under micro sprinkler irrigation system and usual practices ...
Produção de cebola em solo salinizado
(2008-05-01)
The use of water or soil with a high salt concentration has been the main cause of failure in the yield of many crops. Consequently, this work aimed at evaluating the effects of different salinity levels and soil moisture ...