Search results for "porat"

Multiphase chemistry in a microphysical radiation fog model—A numerical study

1993

A microphysical radiation fog model is coupled with a detailed chemistry module to simulate chemical reactions in the gas phase and in fog water during a radiation fog event. In the chemical part of the model the microphysical particle spectrum is subdivided into three size classes corresponding to non-activated aerosol particles, small and large fog droplets. Chemical reactions in the liquid phase are separately calculated in the small and in the large droplet size class. The impact of the chemical constitution of activated aerosols on fogwater chemistry is considered in the model simulations. The mass transfer of chemical species between the gas phase and the two liquid phases is treated …

DSC study on hyaluronan drying and hydration

2011

Abstract The processes of hyaluronan (HYA) drying and hydration were studied using differential scanning calorimetry. In the first approach the isoconversional Kissinger–Akahita–Sunose (KAS) method was applied in order to determine actual activation energies of evaporation of pure water and water from concentrated HYA solutions. Since the evaporation is a single-step process, the activation energies for pure water provided results consistent with tabulated values of evaporation enthalpies. In the course of water evaporation from hyaluronan solution a break in increasing enthalpy followed by a decrease below 0.34 g of water per 1 g of HYA was observed. This result confirmed earlier observati…

Physicochemical Investigation of Lightfast AgCl and AgBr Nanoparticles Synthesized by a Novel Solid−Solid Reaction

2003

Small size AgX (X = Br, Cl) nanoparticles have been synthesized by a novel solid−solid reaction performed by mixing two dry dispersions of AgNO3 and KX nanoparticles in AOT/n-heptane solutions. UV−vis investigation ascertained that formation of nanosized particles taking place after the mixing process is fast and complete. Microcalorimetric measurements of the thermal effect coupled with the mixing process suggest the occurrence of confinement effects and adsorption of the surfactant molecules at the nanoparticle surface, hinting at formation of charged nonstoichiometric surfactant-coated nanoparticles. The analysis of SAXS spectra shows that salt-containing AOT reversed micelles are slight…

Challenges in Information Systems Procurement in the Norwegian Public Sector

2011

Published version of a chapter in the book Lecture Notes in Computer Science, 6846, 404-417. Also available from the publisher at: http://dx.doi.org/10.1007/978-3-642-22878-0_34 Public procurement of information systems (IS) and IS services provides several challenges to the stakeholders involved in the procurement processes. This paper reports initial results from a Delphi study, which involved 46 experienced procurement managers, chief information officers, and vendor representatives in the Norwegian public sector. The participants identified altogether 98 challenges related to IS procurement, divided further into 13 categories: requirements specification, change management, cooperation a…

Energy performance evaluation of a demo solar desiccant cooling system with heat recovery for the regeneration of the adsorption material

2012

Abstract Since July 2008, a Solar Desiccant Evaporative Cooling (DEC) system has been operating as a test plant at the solar laboratory of the Dipartimento di Energia (ex DREAM) of the University of Palermo. The system is composed of an air handling unit (AHU) designed for ventilation of the laboratory coupled with a radiant ceiling that provides most of the required sensible cooling/heating energy. Flat plate collectors deliver part of the regeneration heat of the desiccant wheel during the summertime and are used for space heating during the wintertime. The system was designed for high humidity loads because of the typical climate conditions at the site and the need to support a radiant c…

Free Cash Flow and the Governance of French Firms (Free Cash Flow Et Gouvernance Des Entreprises Françaises)

2008

The limitation of the problem of free cash flow depends on the efficiency of governance mechanisms. In our study, we chose four main governance mechanisms, namely debt, the distribution of dividends, boards of directors and ownership structure. On the basis of a sample of 94 French firms in 2004, the results show that sustained distribution of dividends, a small-sized board of directors and some level of share-ownership by board members and managers are necessary conditions to the resolution of free cash flow. External directors and controlling interests act on free cash flow risk rather indirectly by favouring a massive distribution of dividends. The CEO/chairman duality produces the oppos…

EXTRACTION OF AROMA COMPOUNDS BY PERVAPORATION

1996

Local State-Society Relations in Romania

2020

The chapter on Romania illustrates the working of networks of local state-society relations in a top-down context where the central government mandates the creation of networks and local governments are supposed to initiate and operationalize them. The chapter discusses two collaborative networks—local action groups and community consultative structures for child protection—and two self-reflective networks—local working groups on Roma issues and consultative committees on youth issues. The networks analyzed vary in terms of policy field coverage (broader vs. narrower field of activity), territorial coverage (single vs. multiple municipalities), and perceived stability in time. The analysis …

Changing Policy Environments in Europe and the Resilience of the Third Sector

2020

Contains fulltext : 202754.pdf (Publisher’s version ) (Closed access) In the article, we analyse the impact of changing policy environments on the development of the third sector in Europe. Based on the results of systematic comparative research in eight European countries (Austria, Croatia, France, Germany, the Netherlands, Poland, Spain and the UK), we identify commonalities and differences. In a three-step analysis, we examine policy changes, effects on the third sector and responses by third sector organizations (TSOs) in the social domain. Overall, the third sector in Europe has proven resilient. However, not only have public and private funding decreased, the process for acquiring suc…

Is there a Nordic Approach to Questions of Democracy in Studies of Network Governance?

2009

Abstract The notion of democratic network governance has attracted growing interest among students of local and regional governance in all the Nordic countries since the 1990s. This article examines whether research in this area reflects a particular Nordic account of democracy. The Nordic countries have strong traditions of local autonomy, local networks and the inclusion of civil society associations. The authors find reason to expect that the Nordic traditions of local and regional governance may have stimulated a common approach to democracy questions with the features of an integrative perspective. At the same time, the differences in the history of democratisation are likely to have u…