Search results for "AGRICULTURE"
showing 10 items of 3315 documents
Optical Optimization of the TiO
2018
In this work, SiO2 nanoparticles (NPs) were integrated into the mesoporous TiO2 layer of a perovskite solar cell to investigate their effect on cell performance. Different concentrations of SiO2/ethanol have been combined in TiO2/ethanol to prepare pastes for the fabrication of the mesoporous layer with which perovskite solar cells have been fabricated. Addition of SiO2 NPs of 50 and 100 nm sizes produces an enhancement of cell performance mainly because of an improvement of the photocurrent. This increment is in good agreement with the theoretical predictions based on light scattering induced by dielectric SiO2 NPs. The samples using modified scaffolds with NPs also present a significant l…
Contributions to risk injury evaluation of human skin contact caused by welding technology in mechanical engineering a company
2017
Assembly by welding is a very important pollutant technological process, mainly of the atmosphere and soil. The formation of gas in welding process is the result of electrodes, fluxes burning, formation of fused bath and welded seam. A large number of human operators feels different adverse effects on health. Most problems appears in respiratory system and include bronchitis, respiratory irritation, fever caused by smoke, changes in lung function, decreased immunity to infection and a possible increase of lung cancer risk. Very little information are available about effects on the organism and skin after exposure to fumes from welding, therefore. In this order, this paper do a risk assessme…
Direct visualization of pyrrole reactivity by confined oxidation in a Cyclodextrin Metal‐Organic Framework
2019
Metal-organic frameworks can be used as porous templates to exert control over polymerization reactions. Shown here are the possibilities offered by these crystalline, porous nanoreactors to capture highly‐reactive intermediates for a better understanding of the mechanism of polymerization reactions. By using a cyclodextrin framework the polymerization of pyrrole is restricted, capturing the formation of terpyrrole cationic intermediates. Single‐crystal X‐ray diffraction is used to provide definite information on the supramolecular interactions that induce the formation and stabilization of a conductive array of cationic complexes.
La SCIC : une structure originale pour une agriculture innovante
2018
International audience; Largement ignorée du milieu agricole, la SCIC est en plein développement pour structurer des projets collectifs à l'échelle territoriale. Cette société, à la forme commerciale, redéfinit les termes du pacte coopératif sur la base d'un sociétariat ouvert et pluriel pouvant correspondre aux nouvelles formes d'agriculture.
Modéliser l'ancrage territorial de l'agriculture : application à l'étude de la durabilité d'une agriculture côtière sous pression touristique
2011
The territorial base of agriculture is a key to understand the sustainability of this activity, in hybrid territories like peri-urban areas or rural touristic ones. To this aim, the French method of the "agrarian systems" is improved by the concept of "territorial agrarian system": the territory is then a meta-system of the agrarian system that leads to understand the linkage between the individual trajectories of farmers and the global and collective expectations of the territorial stakeholders. This conceptual, methodological and practical approach is applied to the rural touristic area of Balagne, a seaside territory located at the Northwest Corsica. There, as a subject torn between land…
Développement territorial et développement agricole durable
2012
L'objectif de la communication est de montrer comment au travers d'une approche pluri-disciplinaire, l'ancrage territorial de l'agriculture est une clé de compréhension de la durabilité de l'agriculture de territoires mixtes, périurbains ou ruraux-touristiques. La dimension socio-spatiale qu'introduit cet angle d'analyse conduit à rapprocher géographie et agroéconomie au sein d'une démarche qui vise à modéliser la complexité et la multi-dimensionnalité du développement agricole. Cette approche est appliquée à un territoire dominé à la fois par l'agriculture et le développement touristique, situé en Corse (Balagne). L'agriculture, entre pression foncière et valorisation touristique du patrim…
L'espace de liberté comme mesure synthétique du développement territorial durable
2011
By discussing the concept of development itself, authors propose two synthetic indexes relying on estimation of potential: Development Space Value and Development Space Creation Under the weak hypothesis that any successful development improves future possibilities, changes in potential are a good development measure. In their path, authors show how development space is tied with freedom: a shrink in it results mechanically in indexes fall. So, "sustainable" and "economic" become two sides of same piece rather than enemies. Reliable in simulations, the approach is to be tested in real conditions, to verify full data availability and to secure calculating methods.
Honey Bee Pollen in Meagre (Argyrosomus regius) Juvenile Diets: Effects on Growth, Diet Digestibility, Intestinal Traits, and Biochemical Markers Rel…
2020
This research aimed to evaluate the effects of the inclusion of honey bee pollen (HBP) in meagre (Argyrosoumus regius) juveniles&rsquo
From agricultural to tourist production
2010
This contribution starts off from taking account of the crisis in the agricultural sector. This sector has been “trivialised” by erroneous policies and market rules. However, at present the trend is changing: “demand for environment” is increasing, as well as the attempt of taking actions and policies favouring sustainable development. At the same time, notwithstanding the different meanings attached to the concept of sustainability, a wave of revaluation of rural areas is rising: the countryside is now considered as a source of local cultural values. Its exploitation as a tourist attraction, which is progressively taking off, is to be considered in this context. Natural and cultural assets…
From agricultural to tourist production
2009
The article explores the tourism supply possibilities related to agricultural production.