Search results for "Secondary"
showing 10 items of 1765 documents
Momentum transport and bed shear stress distribution in a meandering bend: Experimental analysis in a laboratory flume
2015
The paper concerns the mechanisms underlying the distribution of the bed shear stress in meandering bends. Literature indicates that cross-stream circulation strongly affects the redistribution of the downstream velocity, but the feedback between them is still poorly understood. The aim of this paper is to gain some insight into how the momentum transport by cross-stream circulation contributes to the bed shear stress redistribution. Experimental analysis, based on a detailed dataset collected in a large-amplitude meandering laboratory flume, is presented. From these data an evaluation is made of the terms in the depth-averaged momentum equations and the analysis is especially devoted to te…
Velocity Distribution and Dip Phenomenon in a Large Amplitude Meandering Channel
2020
The prediction of the velocity-dip, whereby the location of the maximum velocity occurs below the water surface, could be important for defining the flow pattern and the momentum transport processes. This study explores the dip-phenomenon in a high-curvature meandering bend. With the aid of data collected in a laboratory flume, the influence of the distance to the outer bank, the channel's curvature and the aspect ratio on the formation and position of the velocity-dip is investigated. Results show that, for the aspect ratios examined, a dip forms in the velocity profiles and its position varies along the bend as a function of the channel's curvature and the aspect ratio. Based on the measu…
Probing ensemble polymorphism and single aggregate structural heterogeneity in insulin amyloid self-assembly.
2020
Ensembles of protein aggregates are characterized by a nano- and micro-scale heterogeneity of the species. This diversity translates into a variety of effects that protein aggregates may have in biological systems, both in connection to neurodegenerative diseases and immunogenic risk of protein drug products. Moreover, this naturally occurring variety offers unique opportunities in the field of protein-based biomaterials. In the above-mentioned fields, the isolation and structural analysis of the different amyloid types within the same ensemble remain a priority, still representing a significant experimental challenge. Here we address such complexity in the case of insulin for its relevance…
Cognition of Korean-English secondary school teachers about intercultural dimension in EFL teaching
2016
The importance of intercultural competence in education has been recognized in order to promote students’ tolerance and empathy towards others in the globalized world. Being the first and foremost foreign language subject in Korea, English classroom is considered to be the right place to address different cultures and the intercultural competence. Then, how English teachers understand intercultural competence would be important since it would greatly affect their teaching. The aim of this study is to investigate how Korean-English secondary school teachers understand intercultural dimension in EFL teaching in relation to their teaching context; and how their reported practices look like. 37…
Plant-frugivore networks are less specialized and more robust at forest-farmland edges than in the interior of a tropical forest
2012
Forest fragmentation and local disturbance are prevailing threats to tropical forest ecosystems and affect frugivore communities and animal seed dispersal in different ways. However, very little is known about the effects of anthropogenic forest edges and of local disturbance on the structure and robustness of plant–frugivore networks. We carried out focal tree observations to record the frugivore species feeding on eight canopy tree species in the forest interior and at forest–farmland edges in a little and a highly disturbed part of a Kenyan rain forest. For each frugivore species, we recorded its body mass and its forest dependence. We examined how forest edge and local disturbance affec…
Past and Contemporary Changes in Forest Cover and Forest Continuity in Relation to Soils (Southern Latvia)
2014
A set of medium-scale historical maps was used to reconstruct changes in spatial patterns of forest area during the last 220 years in an agricultural matrix of northeastern Europe (Zemgale region, Latvia). Changes in total forest area by soils were determined, as well as the time period of continuous forest cover. Proportion of protected area for each soil trophic group was also calculated. Patterns of recent forest development differed between soil trophic groups. Afforestation occurred mainly on wet and poor soils in the 19th and 20th centuries, while the proportion of woodland area on fertile soils typical for nemoral forests was fairly stable. Only 1% of the fertile soil area has been c…
Implementing the 5-S quality system at a State Vocational Training School
2013
El Método de las 5S Trata de lograr v Lugares de Trabajo mejor Organizados, Más ordenados y Más limpios de forma permanente CONSEGUIR Para Una alcaldesa productivity y entorno laboral Seguro. Este Trabajo describen las Fases de la Implantación del Método en el laboratorio de Hematología, En un centro educativo de Formación Profesional de la provincia de Valencia. Los Resultados obtenidos a posteriori de la Implantación del Método 5S, demuestran Una gran difference en Cuanto al orden, La ubicación de los Materiales y el mejor clima en el aula, en comparacion con los Resultados de la prueba piloto los antes de su Implantación. The 5S method try to make workplaces better organized, more orderl…
Il professore Franco Salvo. Un maestro dei diritti di libertà a Palermo nella seconda metà del Novecento
2018
This paper focuses on the figure of Franco Salvo, a teacher of history and philosophy at the classical high school Umberto I in Palermo from 1945 to 1981. He was a master of freedom rights who taught democratically and critically the civic education in a historical perspective. Salvo was a representative figure of the Sicilian school after the Second World War, a master of life. As his students recall, in the 1968 he supported the student movement, forming their consciences for a critical reflection, a responsible freedom, a social and political commitment.
Free radical-mediated systemic immunity in plants.
2014
SPE IPM; Systemic acquired resistance (SAR) is a form of defense that protects plants against a broad-spectrum of secondary infections by related or unrelated pathogens. SAR related research has witnessed considerable progress in recent years and a number of chemical signals and proteins contributing to SAR have been identified. All of these diverse constituents share their requirement for the phytohormone salicylic acid, an essential downstream component of the SAR pathway. However, recent work demonstrating the essential parallel functioning of nitric oxide (NO)-derived and reactive oxygen species (ROS)-derived signaling together with SA provides important new insights in the overlapping …
Effects of forest regeneration on the structure of bird communities in northern Finland
1985
Breeding bird communities in five stages of secondary forest succession were studied in northeastern Finland in 1980–82. Three groups of communities were distinguished: open land, brush phase and forest communities, dominated by Motacilla alba and Oenanthe oenanthe, Phylloscopus trochilus and Anthus trivialis, Phylloscopus trochilus and Fringilla montifringilla, respectively. Pair density, number of species, biomass of adult birds and species diversity increased in the course of succession, none of these, however, monotonously. Average bird weight showed a decreasing trend although the variation was considerable. The degree of specialization in communities (measured by ratios derived from n…