Search results for "LABOR"

An experimentalist point of view on quantitative elaboration of theoretical models

1980

Abstract In a number of problems of solute–solute–solvent interaction, information on the geometrical structure of solvent in the near neighborhood of solute is now available. This was obtained from a variety of experiments as well as from numerical calculations. The present trend in computer simulation as well as an experimental techniques seems to appropriately be towards an extension of this information to include thermal disorder. Despite these efforts, other aspects of solute–solute–solvent interaction do not seem likely to find exhaustive answers through a study of the geometrical configurations of solvent molecules around the solute. More detailed calculations of inter- and intra-mol…

Neonicotinoids from coated seeds toxic for honeydew-feeding biological control agents

2021

Seed coating (‘seed treatment’) is the leading delivery method of neonicotinoid insecticides in major crops such as soybean, wheat, cotton and maize. However, this prophylactic use of neonicotinoids is widely discussed from the standpoint of environmental costs. Growing soybean plants from neonicotinoid-coated seeds in field, we demonstrate that soybean aphids (Aphis glycines) survived the treatment, and excreted honeydew containing neonicotinoids. Biochemical analyses demonstrated that honeydew excreted by the soybean aphid contained substantial concentrations of neonicotinoids even one month after sowing of the crop. Consuming this honeydew reduced the longevity of two biological control …

Didattica e sviluppo delle competenze del Maestro. Docenti e studenti protagonisti in un percorso di ricerca

2010

Il volume affronta il tema dell’integrazione delle lezioni, dei laboratori e del tirocinio nella formazione dei futuri maestri, presentando concrete modalità di interazione tra le esperienze maturate dagli studenti del Corso di Laurea in Scienze della Formazione Primaria durante il percorso universitario. Nel libro sono descritte le modalità con cui durante le ore di lezione, di laboratorio e di tirocinio si è cercato di stimolare la riflessione degli studenti e di aumentare la loro consapevolezza circa i processi attivati nell’apprendimento, le motivazioni sottostanti, le situazioni contingenti e gli aspetti più favorevoli allo sviluppo della competenza professionale del maestro. La ricerc…

Transiciones al mundo del trabajo: La inserción profesional a través del cine

2010

Estudio de las transiciones laborales de los/as jóvenes españoles/as a través de un recorrido por la filmografía reciente.

Debate: Europa y Estados Unidos en el siglo XXI

2003

Succeeding with Building Information Modeling: A Case Study of BIM Diffusion in a Healthcare Construction Project

2014

Technological innovations such as Building Information Modeling (BIM) offer opportunities to improve collaborative work and integration in the architecture, engineering and construction industry. However, research to date has documented how many organizations struggle with how to work based on this new technology, and many implementations fail. In this paper we present a case study of a major healthcare construction project in which the use of BIM was paramount, and where designers claim to have succeeded in integrated design. The designers organized their digital collaboration by establishing 1) change agents; 2) a cloud computing infrastructure; 3) new roles and responsibilities; 4) BIM c…

IPM-recommended insecticides harm beneficial insects through contaminated honeydew

2020

The use of some systemic insecticides has been banned in Europe because they are toxic to beneficial insects when these feed on nectar. A recent study shows that systemic insecticides can also kill beneficial insects when they feed on honeydew. Honeydew is the sugar-rich excretion of hemipterans and is the most abundant carbohydrate source for beneficial insects such as pollinators and biological control agents in agroecosystems. Here, we investigated whether the toxicity of contaminated honeydew depends on i) the hemipteran species that excretes the honeydew; ii) the active ingredient, and iii) the beneficial insect that feeds on it. HPLC-MS/MS analyses demonstrated that the systemic insec…

Endothelial cell-matrix interactions.

2002

Dynamic interactions between endothelial cells and components of their surrounding extracellular matrix are necessary for the invasion, migration, and survival of endothelial cells during angiogenesis. These interactions are mediated by matrix receptors that initiate intracellular signaling cascades in response to binding to specific extracellular matrix molecules. The interactions between endothelial cells and their environment are also modulated by enzymes that degrade different matrix components and thus enable endothelial invasion. Recent reports on gene targeting in mice have confirmed the role of two classes of matrix receptors, integrins and cell surface heparan sulfate proteoglycans…

Preclinical immunomodulation by the probiotic Bifidobacterium breve M-16V in early life

2016

This study aimed to investigate the effect of supplementation with the probiotic Bifidobacterium breve M-16V on the maturation of the intestinal and circulating immune system during suckling. In order to achieve this purpose, neonatal Lewis rats were supplemented with the probiotic strain from the 6th to the 18th day of life. The animals were weighed during the study, and faecal samples were obtained and evaluated daily. On day 19, rats were euthanized and intestinal wash samples, mesenteric lymph node (MLN) cells, splenocytes and intraepithelial lymphocytes (IEL) were obtained. The probiotic supplementation in early life did not modify the growth curve and did not enhance the systemic immu…

Una experiencia de formación para analizar, planificar y dirigir actuaciones de merchandising en el punto de venta

2015

El trabajar en equipo y tener un proyecto común de análisis, reflexión, diagnóstico y recomendaciones de mejora para los puntos de venta posibilita el que el alumnado pueda dialogar, argumentar, eliminar prejuicios, establecer relaciones de igualdad y valorar más la interdependencia entre todos los miembros del grupo. Asumimos que el sujeto aprende a hacer, es decir, a transferir y poner en práctica lo aprendido si tiene las oportunidades adecuadas. Desde la realización de esta actividad en Formación profesional el alumnado tiene la oportunidad de testar y conocer el Mercado Central de Valencia (ámbito comercial muy importante en el entorno local de su ciudad) para comprender la realidad em…