1,041 research outputs found
The open method of coordination – effectively preventing welfare state retrenchment?
No full textThis article re-examines the division between "optimists" and "pessimists" within the literature on the Open Method of Coordination’s (OMC) effectiveness. Each of those "camps" tends to focus on a different question. "Optimists" are more concerned with the question of whether the OMC exerts an influence on the national level and through which mechanisms, whilst "pessimists" concentrate on the question of whether the OMC can "strengthen" EU social policy and therefore European welfare states. This article combines these two perspectives and argues that the OMC is indeed capable of influencing national policies through the dissemination of ideas and "learning" as the "optimists" stress. However, policy "learning" at the member state level is shaped and constrained by a variety of internal and external pressures. Against the hopes of most of the OMC "optimists", this makes the OMC largely ineffective in preventing welfare state retrenchme
Characterization of ash from biomass combustion for its use as filler in asphalt mixtures
No full textFly and bottom ashes are the main by-products derived from the combustion of solid biomass. Since the production of energy from this source is increasing, processing and disposal of its ash has become an environmental and economic issue. This research investigates the potential use of ash from biomass as filler in asphalt mixtures. Morphological, physical and chemical characteristics of twenty-seven different ashes and two traditional fillers were evaluated according to European standard EN 13043. Leaching tests were also performed in order to quantify possible release of pollutants. Experimental results show a wide range of values of almost all the investigated properties and low correlation with biomass type. As most of the ashes do not respect acceptance limits for grading and release of pollutants, it can be concluded that processing the raw material before its reuse is necessary. However, the low content of organic matter and harmful fines and the high stiffening power of the ashes suggest that ash from biomass combustion may be considered for the replacement of filler in asphalt mixture
A preliminary investigation into the physical and chemical properties of biomass ashes used as aggregate fillers for bituminous mixtures
No full textFly and bottom ashes are the main by-products arising from the combustion of solid biomass. Since the production of energy from this source is increasing, the processing and disposal of the resulting ashes has become an environmental and economic issue. Such ashes are of interest as a construction material because they are composed of very fine particles similar to fillers normally employed in bituminous and cementitious mixtures. This research investigates the potential use of ash from biomass as filler in bituminous mixtures. The morphological, physical and chemical characteristics of 21 different ashes and two traditional fillers (calcium carbonate and ‘‘recovered'' plant filler) were evaluated and discussed. Leaching tests, performed in order to quantify the release of pollutants, revealed that five ashes do not comply with the Italian environmental re-use limits. Experimental results show a wide range of values for almost all the investigated properties and a low correlation with biomass type in terms of origin and chemical composition. Furthermore, sieving and milling processes were found to improve the properties of the raw material in terms of grading and sample porosity. The effectiveness of these treatments and the low content of organic matter and harmful fines suggest that most of the biomass ashes investigated may be regarded as potential replacements for natural filler in bituminous mixture
How legitimate is the open method of coordination?
No full textThis article argues that the OMC's legitimacy can be improved only by strengthening parliamentary channels of input-legitimacy since output-legitimacy alone is inappropriate and cannot be achieved without input-legitimacy. In addition, concepts and practices of direct 'stakeholder' participation currently applied within the OMC are insufficient in strengthening input-legitimacy
Diario veneziano e altri racconti: la rubrica di Milena Milani sul quotidiano La Stampa. Con un affondo sul Premio Strega
No full textThis essay offers a thematic reading of some short stories appeared in the
column that Milena Milani held in the daily newspaper La Stampa (Stampa Sera) from
1950 to 1964. In her texts, Venice is one of the cities of her youth, where to discover the
everyday but also herself as a writer, a profession that will identify her spirit in life. My
research also aims to highlight a brief catalogue of Milani’s short stories between the
forties and the sixties that could be read in her books and in newspapers and magazines
of that period. In the end, I also offer a list of her books in Italian Archives and author
Funds connected to the Premio Strega: she wanted to participate to the prize in 1947
and then succeeded in 1954 and in 1964.This essay offers a thematic reading of some short stories appeared in the
column that Milena Milani held in the daily newspaper La Stampa (Stampa Sera) from 1950 to 1964. In her texts, Venice is one of the cities of her youth, where to discover the everyday but also herself as a writer, a profession that will identify her spirit in life. My research also aims to highlight a brief catalogue of Milani’s short stories between the 40s and the 60s that could be read in her books and in newspapers and magazines of that period. In the end, I also offer a list of her books in Italian Archives and author Funds connected to the Premio Strega: she wanted to participate to the prize in 1947 and then succeeded in 1954 and in 1964
Re-use of ashes from the combustion of municipal solid waste and biomass in bituminous mixtures
No full textThe paper presents an extended research work on the re-use of bottom and fly ashes of different origins in substitution of fine aggregates in bituminous mixtures. Bottom ash from a north Italian municipal solid waste incinerator (MSWI), and biomass bottom and fly ashes from twelve different power plants were considered. The MSWI ashes were vitrified at 1450°C. Vitrified MSWI ash and biomass ashes were ground and sieved to different dimensions and used as filler or sand in bituminous mixtures. Physical-mechanical tests included in road materials specifications were carried out on aggregates, mastics and on the whole mixtures. In this last case, ashes were used in partial or total substitution of natural aggregates. The test results demonstrate that vitrified MSWI ash and biomass bottom and fly ashes can be effectively re-used as pavement materials in order to avoid their landfill disposal. Moreover, the vitrification process reduces the ashes absorption potential of binder and the biomass ashes can be re-used in their original state if they are first subjected to sieving selectio
Use of vitrified bottom ashes of municipal solid waste incinerators in bituminous mixtures in substitution of natural sands
No full textBottom ashes derived from an Italian Municipal Solid Waste Incinerator (MSWI) were vitrified at 1450 °C and subsequently employed in the laboratory, after adequate size reduction, as sand fractions in partial or total substitution of natural aggregates in bituminous mixtures for road pavements.
The experimental plan focused on the effects associated to variations both of the binder content (4.5-5.5%) and of the percentage of sand substitution with vitrified MSWI ashes (comprised between 0 and 100%). Investigations were carried out by considering performance-related compaction, volumetric and mechanical properties which were assessed in the laboratory by employing a number of different characterization techniques.
It was observed that the key factor which allows a detailed interpretation of test results is the minimum absorption which takes place within the mixtures at the vitrified ash-bitumen interface. As a consequence, mixtures with this type of secondary (recycled) aggregate may lead to substantial savings associated to the reduction of binder dosage and to consequent economical and environmental advantages.
Even though mixtures containing vitrified MSWI ashes still need to be thoroughly investigated with a special attention devoted to mix-design and moisture susceptibility issues, the results obtained in this study appear to be promising. The presence of vitrified ashes does not negatively affect the stiffness and fatigue failure properties of the mixtures, while benefits deriving from their high angle of internal friction may be beneficial with respect to resistance to accumulation of permanent deformation
Observatorio de bibliometría y cienciometría USTA. Ficha bibliométrica. Autor: Janneth Milena Pacheco Baquero
No full textInforme de las métricas de autor de la Dra. Janneth Milena Pacheco Baquero de las
publicaciones indexadas en Google Académico cuyo objetivo es entregar un insumo
para el fortalecimiento de las capacidades y potencialidades de los autores de la
Universidad Santo Tomás en el posicionamiento y visibilidad de sus publicaciones.Report of the author metrics of Janneth Milena Pacheco Baquero of the publications
indexed in Google Scholar whose objective is to provide an input for the
strengthening of the capacities and potentialities of the authors of the Santo Tomás
University in the positioning and visibility of their publications.http://unidadinvestigacion.usta.edu.c
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