Search results for "CEM"
showing 10 items of 3487 documents
La Géorgie, un bon élève du Processus de Bologne ?
2013
International audience; Après des réformes radicales des systèmes de recherche et d'enseignement supérieur en Géorgie depuis 2004, l'adhésion en 2005 de ce pays au Processus de Bologne consacre l'ambivalence de la politique suivie d'un rapprochement avec l'Union européenne conjugué avec une alliance avec les USA, dans le contexte d'une économie (toujours) largement dominée par les intérêts russes. Il s'agit dans cet article de mettre en perspective la déclinaison du Processus de Bologne en Géorgie.
Mechanical desorption of a single chain: unusual aspects of phase coexistence at a first-order transition.
2012
The phase transition occurring when a single polymer chain adsorbed at a planar solid surface is mechanically desorbed is analyzed in two statistical ensembles. In the force ensemble, a constant force applied to the nongrafted end of the chain (that is grafted at its other end) is used as a given external control variable. In the $z$-ensemble, the displacement $z$ of this nongrafted end from the surface is taken as the externally controlled variable. Basic thermodynamic parameters, such as the adsorption energy, exhibit a very different behavior as a function of these control parameters. In the thermodynamic limit of infinite chain length the desorption transition with the force as a contro…
Boolean operations with implicit and parametric representation of primitives using R-functions
2005
We present a new and efficient algorithm to accurately polygonize an implicit surface generated by multiple Boolean operations with globally deformed primitives. Our algorithm is special in the sense that it can be applied to objects with both an implicit and a parametric representation, such as superquadrics, supershapes, and Dupin cyclides. The input is a constructive solid geometry tree (CSG tree) that contains the Boolean operations, the parameters of the primitives, and the global deformations. At each node of the CSG tree, the implicit formulations of the subtrees are used to quickly determine the parts to be transmitted to the parent node, while the primitives' parametric definition …
AES and CEMS analysis of the formation of layers on Si steel under thermal treatment in a flux of H2/water vapour
1991
The near surface diffusion and reaction processes in iron-silicon steel (3.1 wt.%Si) during 10 min decarburization in water vapour/hydrogen have been studied. The decarburization temperature has been varied between 506 and 714°C for the fixed partial pressure ratio pH2O/pH2=0.017. An outer layer of SiO2 forms on the surface with its thickness increasing with temperature. From 600°C upwards, the decarburization process is hindered and a cementite layer is formed below the SiO2 layer. The formation of fayalite at the surface has been studied at a fixed decarburization temperature with pH2O/pH2 ranging from 0.017 to 0.49. The scale thickness reduces abruptly just before the ratio pH2O/pH2 nece…
How sustainability factors influence maintenance of water distribution systems feeding manufacturing industries
2022
This work aims to analyse the role played by relevant sustainability factors towards the implementation of maintenance interventions in the manufacturing industrial sector. In this context, we focus on industrial water distribution systems, on whose effective work depends the functioning of core plants as well as general industrial facilities. In detail, we propose aMulti-Criteria Decision-Making (MCDM) application based on the use of the Analytic Network Process (ANP) as amethodological way to prioritise maintenance interventions while considering the influence of some of themost relevant sustainability factors identified in literature. The main advantage of such an approach consists in th…
THE DURABILITY OF INNOVATIVE CEMENTITIOUS COATINGS: PHOTOCATALYTIC ACTIVITY AND COLOUR
2012
Today, in a world context characterized by high pollution levels and increasingly limited natural resources, even in the building sector, focusing on environmental issues, through energy saving and a more rational use of these resources, both during construction and management, is fundamental. An important contribution in this direction is given by the knowledge of the durability of products and building components, especially when innovative products are applied and no information are available on the reliability and service life. The research concerns the evaluation of the durability of cement-based photocatalytic coatings (“rasanti” in the Italian diction), containing different types of …
Does the environmental management standard ISO 14001 stimulate sustainable development?
2008
PurposeThe purpose of this paper is to discuss the relation between the ISO 14001 standard and sustainable development, and to present a case study of the energy sector in Poland in order to provide an example of the influence of the environmental management system according to ISO 14001 on environmental quality and sustainable development.Design/methodology/approachThe relation between sustainable development and the environmental management system related to the ISO 14000 series is discussed by comparing these series with the ICC Business Charter for Sustainable Development. The case study is based on the analysis of the fulfilment of environmental goals and tasks, which are part of the e…
On sustainable management in the local governance of water: a prospective localised study
2006
In the face of the changes in the planet's natural resources and of their unequal distribution, it is becoming more urgent that contemporary societies oversee environmental assets in a global manner. Although international directives, when they are transposed into national laws, may set specific objectives, meeting them at the local level is as yet an uneven enterprise. Nevertheless we hope to demonstrate, using a case-study involving local tensions over water resources, that public management of the crisis may be developed that effectively involves the civic society, by using the incentives and enforcement tools of central government and of local institutions.
THE HUMAN RIGHT TO HEALTH: A RETROSPECTIVE ANALYSIS AFTER 70 YEARS OF INTERNATIONAL RECOGNITION
2018
In 1948, the General Assembly of the United Nations adopted the first international text recognising universal human rights for all; the Universal Declaration of Human Rights. Article 25 recognises the right to an adequate standard of living, which includes the right to health and medical care. On the occasion of the 70th anniversary of the Declaration, this article presents an overview of the main developments that have been made towards understanding the content and implications of the right to health, as well as an analysis of some specific advancements that aim to facilitate the enforcement thereof. These include: a) the implication of private entities as responsible for right to health…
About Objective 3-D Analysis of Airway Geometry in Computerized Tomography
2008
The technology of multislice X-ray computed tomography (MSCT) provides volume data sets with approximately isotropic resolution, which permits a noninvasive 3-D measurement and quantification of airway geometry. In different diseases, like emphysema, chronic obstructive pulmonary disease (COPD), or cystic fribrosis, changes in lung parenchyma are associated with an increase in airway wall thickness. In this paper, we describe an objective measuring method of the airway geometry in the 3-D space. The limited spatial resolution of clinical CT scanners in comparison to thin structures like airway walls causes difficulties in the measurement of the density and the thickness of these structures.…