Computational analysis of single rising bubbles influenced by soluble surfactant

This paper presents novel insights about the influence of soluble surfactants on bubble flows obtained by Direct Numerical Simulation (DNS). Surfactants are amphiphilic compounds which accumulate at fluid interfaces and significantly modify the respective interfacial properties, influencing also the overall dynamics of the flow. With the aid of DNS local quantities like the surfactant distribution on the bubble surface can be accessed for a better understanding of the physical phenomena occurring close to the interface. The core part of the physical model consists in the description of the surfactant transport in the bulk and on the deformable interface. The solution procedure is based on an Arbitrary Lagrangian-Eulerian (ALE) Interface-Tracking method. The existing methodology was enhanced to describe a wider range of physical phenomena. A subgrid-scale (SGS) model is employed in the cases where a fully resolved DNS for the species transport is not feasible due to high mesh resolution requirements and, therefore, high computational costs. After an exhaustive validation of the latest numerical developments, the DNS of single rising bubbles in contaminated solutions is compared to experimental results. The full velocity transients of the rising bubbles, especially the contaminated ones, are correctly reproduced by the DNS. The simulation results are then studied to gain a better understanding of the local bubble dynamics under the effect of soluble surfactant. One of the main insights is that the quasi-steady state of the rise velocity is reached without ad- and desorption being necessarily in local equilibrium

Atlas of Ocean Wealth

The Atlas of Ocean Wealth is the largest collection to date of information about the economic, social and cultural values of coastal and marine habitats from all over the world. It is a synthesis of innovative science, led by The Nature Conservancy (TNC), with many partners around the world. Through these efforts, they've gathered vast new datasets from both traditional and less likely sources.The work includes more than 35 novel and critically important maps that show how nature's value to people varies widely from place to place. They also illustrate nature's potential. These maps show that one can accurately quantify the value of marine resources. Further, by enumerating such values, one can encourage their protection or enhancement for the benefit of people all around the world. In summary, it clearly articulates not just that we need nature, but how much we need it, and where

Extended notation. The depiction of the unconventional

Most extended instrumental playing techniques are still deprived of a conventional method of notation. In order to facilitate the utilisation of these unconventional musical elements, a coherent and consistent notation system is developed in this thesis. It comprises chapters on string instruments, wind instruments, percussion instruments, plucked instruments and keyboard instruments. A systematic notation of unconventional instrumental playing techniques has not yet been attempted, nor have all tech-niques subject to this work yet been explained in detail. In order to coherently depict unconventional playing techniques, a set of criteria is defined. These criteria postulate that all developments are supposed to be 1. As exact as possible and 2. As simple as possible while the system may 3. Not be contradictory to traditional notation, but should instead extend and be closely related to it. Further, in order to guarantee that the additions are consistent, they need to be compatible with, and distinct from, all other signs of the system. Each unconventional playing technique is classified and explained in detail. Subsequently, previous methods of its notation are presented and discussed with regard to the previously defined criteria. Finally, a suggestion for the notation that agrees with the postulations is provided. In the next step the application of the developments is then described by presenting examples from compositions that were either produced during the writing of the thesis or revised by replacing old methods of notation with the developments from this thesis. Altogether examples from eight instrumental works that employ the new methods are displayed.HuMPA studentshi

Migration, Mobility and Human Rights at the Eastern Border of the European Union - Space of Freedom and Security

This edited collection of migration papers would like to emphasise the acute need for migration related study and research in Romania. At this time, migration and mobility are studied as minor subjects in Economics, Sociology, Political Sciences and European Studies only (mostly at post-graduate level). We consider that Romanian universities need more ‘migration studies’, while research should cover migration as a whole, migration and mobility being analysed from different points of view – social, economical, legal etc. Romania is part of the European Migration Space not only as a source of labourers for the European labour market, but also as source of quality research for the European scientific arena. Even a country located at the eastern border of the European Union, we consider Romania as part of the European area of freedom, security and justice, and therefore interested in solving correctly all challenges incurred by the complex phenomena of migration and workers’ mobility at the European level. The waves of illegal immigrants arriving continuously on the Spanish, Italian and Maltese shores, and the workers’ flows from the new Member States from Central and Eastern Europe following the 2004 accession, forced the EU officials and the whole Europe to open the debate on the economical and mostly social consequences of labour mobility. This study volume is our contribution to this important scientific debate. Starting with the spring of 2005, the Jean Monnet European Centre of Excellence and the School of High Comparative European Studies (SISEC), both within the West University of Timisoara, have proposed a series of events in order to raise the awareness of the Romanian scientific environment on this very sensitive issues: migration and mobility in the widen European Space. An annual international event to celebrate 9 May - The Europe Day was already a tradition for SISEC (an academic formula launched back in 1995 in order to prepare national experts in European affairs, offering academic post-graduate degrees in High European Studies). With the financial support from the Jean Monnet Programme (DG Education and Culture, European Commission), a first migration panel was organised in the framework of the international colloquium ‘Romania and the European Union in 2007’ held in Timisoara between 6 and 7 of May 2005 (panel Migration, Asylum and Human Rights at the Eastern Border of the European Union). Having in mind the positive welcoming of the migration related subjects during the 2005 colloquium, a second event was organised on 5 May 2006 in the framework of the European Year of Workers’ Mobility: the international colloquium Migration and Mobility: Assets and Challenges for the Enlargement of the European Union. In the same period, the Jean Monnet European Centre of Excellence, SISEC and The British Council in Bucharest have jointly edited two special issues of The Romanian Journal of European Studies, no.4/2005 and 5-6/2006, both dedicated to migration and mobility. Preliminary versions of many of the chapters of this volume were presented at the above mentioned international events. The papers were chosen according to their scientific quality, after an anonymously peer-review selection. The authors debate both theoretical issues and practical results of their research. They are renowned experts at international level, members of the academia, PhD students or experienced practitioners involved in the management of the migration flows at the governmental level. This volume was financed by the Jean Monnet Programme of the Directorate General Education and Culture, European Commission, throughout the Jean Monnet European Centre of Excellence (C03/0110) within the West University of Timisoara, Romania, and is dedicated to the European Year of Workers’ Mobility 2006. Timisoara, December 200

Teacher Education Futures: Developing learning and teaching in ITE across the UK

A selection of papers from the Teacher Education Futures conference 2006

Ground Water Quality Effects on Domestic Water Utilization

The work upon which this report is based was supported in part by funds (Project A-040-ALAS) provided by the United States Department of the Interior, Office of Water Resources Research, as authorized under the Water Resources Act of 1964, as amended

INSTITUTIONAL CHANGE IN INDIAN AGRICULTURE

Globalization, privatization and scientific advancements pose new challenges and opportunities for the development of Indian agriculture. The emerging paradigm shifts focus to creation and application of new knowledge for agricultural development and global competitiveness. To facilitate this shift and realize greater economic efficiency, a new set of responsive institutions should emerge. This volume discusses the direction of institutional change in Indian agriculture. The roles of the state, markets and collective actions are examined for evolving the knowledge-intensive agriculture. The contributed papers from a number of leading researchers cover the institutions for R&D, land and water resources, credit, marketing, trade and agro-processing.Industrial Organization, International Development,