1,721,589 research outputs found
Jones (Villiam). Kickapoo ethnological notes (Notes ethnologiques sur les Kickapoo).
No full textPoutrin . Jones (Villiam). Kickapoo ethnological notes (Notes ethnologiques sur les Kickapoo).. In: Journal de la Société des Américanistes. Tome 10 n°2, 1913. p. 612
Caratterizzazione delle risorse geotermiche del bacino geotermico dell’area vulcanica orvietana
No full textIl contributo alla ricerca erogato dalla Regione Umbria al dipartimento DICAM dell’Università di Bologna è finalizzato ad una ricerca di interesse comune intitolata: “Bacino geotermico dell’area vulcanica orvietana. Caratterizzazione della risorsa per lo sviluppo idrotermale del bacino geotermico”. L’attività di ricerca prevede di caratterizzare il flusso dei fluidi di strato del bacino geotermico dell’area Orvietana. Lo studio prevede la ricostruzione del modello geologico (modello concettuale) attraverso dati reperibili in letteratura e / o forniti dalla Regione Umbria. Il modello concettuale del bacino geotermico è implementato poi in un modello numerico per la successiva simulazione dei processi di flusso di massa e calore, eseguita con il codice numerico TOUGH2 (Pruess, 1999) utilizzando l’equazione di stato EWASG, che tiene conto di gas non condensabili (CO2) e soluzioni saline ad alta temperatura e pressione (coerentemente con le caratteristiche dei reservoir geotermici oggetto di studio).
La ricerca è suddivisa nelle seguenti tre attività:
1. Nella prima si procede alla costruzione del modello concettuale, attraverso la raccolta ed elaborazione dei dati presenti in letteratura e di dati di pozzo, ove disponibili. In questa fase la regione Umbria collaborerà fornendo i dati in suo possesso;
2. Nella seconda si realizza il modello numerico. In assenza di curve di produzione e log dinamici, la calibrazione è stata necessariamente eseguita mediante le simulazioni dello stato stazionario (steady state). Il modello dovrà, per quanto possibile, essere in grado di riprodurre i gradienti geotermici ottenuti dai dati di letteratura.
3. La terza prevede la realizzazione di alcuni scenari di sfruttamento per la valutazione della capacità produttiva del bacino geotermico e della sua risposta, in termini di depauperamento termico e idrico. In questa fase DICAM ha concordato con la Regione Umbria le caratteristiche delle possibili modalità di prelievo da simulare
13th International Bologna Conference on Magnetic Resonance in Porous Media - Bologna 2016: Conference Handbook and Book of Abstract
Get PDFWelcome to Bologna MRPM13, the 13th International Bologna Conference on Magnetic Resonance in Porous Media, an AMPERE Event organized under the auspices of Alma Mater Studiorum, University of Bologna. The Conference will be held at the University’s prestigious School of Engineering and Architecture, which has made available its excellent facilities.
The conference series was founded by the University of Bologna, where the first meeting was held in 1990. MRPM2, held in 1993, was hosted by the University of Kent, Canterbury, UK, MRPM3 in 1995 at the Université Catholique of Louvain-la-Neuve, Belgium, and MRPM4, in 1997, in Trondheim, Norway. The conference returned to Bologna for its fifth edition in
2000. MRPM6 was organized in 2002 at the University of Ulm, Germany, and MRPM7 in 2004 in Palaiseau, France. After MRPM7, the community joined the Groupement Ampere as the MRPM Division, and the Conferences, now called the “Bologna MRPM Conferences,” became Ampere Events. MRPM8 returned to Bologna in 2006; MRPM9 in 2008 was hosted
by the Schlumberger Research Center (Cambridge, MA, USA); MRPM10 in 2010 at the University of Leipzig, Germany; MRPM11 in 2012 at the University of Surrey (Guildford, UK); and MPM12 in 2014 at the University of Wellington, NZ. MRPM Conference Proceedings were initially published as special issues of Magnetic Resonance Imaging (MRPM1 to
MRPM8) while MRPM9 and MRPM10 came out as part of the AIP Conference Proceedings Series. Since MRPM11, proceedings have been published as special issues of Microporous and Mesoporous Materials. In addition, since MRPM8 (2006), poster presenters may submit papers based on their posters for inclusion in special issues of the open-access on-line
journal Diffusion Fundamentals. As was the practice at previous conferences, all authors of the Invited and Oral communications are invited to prepare a manuscript for inclusion in the MRPM13 Proceedings. After review, contributions will be published in a special issue of Microporous and Mesoporous Materials. The manuscripts should be no more than four printed pages and comply precisely with the Journal’s editorial indications. MRPM conferences look at progress achieved by magnetic resonance in furthering understanding porous media and fluids inside the pore-space. The meetings are also intended to encourage contact among people from different academic and industrial backgrounds. Researchers in Physics, Chemistry, Engineering, Life Sciences, Mathematics, Computer Sciences, and Industrial Applications will benefit from the exchange of ideas, experiences and new approaches. Topics of MRPM13 will include innovative techniques to study structures, the behavior of fluids and their interactions in a wide range of natural and artificial materials, including rocks, cements, biological tissues, foodstuffs, wood, particle packs, sediments, pharmaceuticals, zeolites, and bioconstructs. Advances in hardware, methodology, data acquisition and processing are also on the agenda for
discussion.
The Giulio Cesare Borgia Prize for Young Researchers will be awarded at the end of the Conference. The Prize (three thousand Euro offered by our DICAM and DIFA Departments, University Bologna) was established in “memory of the contribution made by Giulio Cesare Borgia to the development of Magnetic Resonance in Porous Media and for the particular attention he always paid to the enthusiasm, passion, and courage of young people who undertook the difficult and adventurous path of scientific investigation in this fascinating area of research”. The award will be resented to an emerging (usually under 35 year old) scientist whose presentation at the Conference shows greatest promise for future scientific leadership. Contributions to the Conference are as follows: Invited speeches (20 minutes + 5 minute discussion), Oral presentations (12 minutes + 3 minute discussion), and Poster presentations during the Poster Session. Posters will be
numbered; the numbered poster list is printed in the Scientific Programme.
The Organizing Committee would like to thank all sponsors and donors for their support. These include: Università di Bologna (IT); Dipartimento di Fisica e Astronomia (DIFA, U. Bologna, IT); Dipartimento DICAM (U. Bologna, IT); Scuola di Ingegneria e Architettura (U. Bologna, IT); Stelar s.r.l. (IT); Bruker Biospin GmbH (DE, IT); Niumag (China); Oxford Instruments (UK); MR Solutions (UK); Pure Devices GmbH (DE); Jeol S.p.A. (IT); Lab-Tools Ltd (UK). The Organizing Committee is also very grateful to Prof. Ezio Mesini, President of the School of Engineering and Architecture, for making available the conference venue at the School, and to Professors Ezio Mesini and Ferruccio Trifirò, President of the Accademia dell’Istituto delle Scienze di Bologna, for hosting the NMR School in the Academy's Ulisse Hall.
On behalf of the Organizing Committee, I wish you an enjoyable and fruitful time in Bologna.
August 21st 2016 Villiam Bortolotti Chair, Bologna MRPM13
DICAM, University of Bologn
Data for: Pathline creation using TOUGH simulation results and fully unstructured 3D Voronoi grids
No full textThe data contains all the example files for the results visualization of TOUGH2Path pathline computation for 2D and 3D case studies
Laboratory Evaluation of Alkali and Alkali-Surfactant-Polymer Flooding Combined with Intermittent Flow in Carbonatic Rocks
No full textConventional alkali flooding in numerous carbonatic reservoirs is often not effective due to insufficient contact time to reverse rock wettability from oil-wet into a more favorable condition to get the highest ultimate oil recovery, i.e., water-wet or partially water-wet conditions. Therefore, conventional flooding might be not completely efficient and/or adequate. Applying intermittent flow helps rock surface to complete its wettability reversal and to improve the final oil recovery. In the present study, laboratory evaluations of alkali and Alkali-Surfactant-Polymer (ASP) flooding combined with intermittent flow are presented and comparatively discussed. An alkaline solution is injected into oil-wet homogeneous carbonatic core samples and aged for a week. This aging period represents an “intermittent flow” which allows rock surface to reach a more favorable condition for oil recovery; oil is repulsed from the rock surface and the core is then flooded by displacing brine. Core flood test is performed vertically in order to avoid the early breakthrough of injected water phase. In the solely alkali flooding, the results demonstrates that the concentration of alkali strongly affects the flooding efficiency. Alkali concentration is intentionally kept low.In fact, high alkali concentration (of about 0.5 molar) is not recommended because the insolubility of in-situ soap (soap produced by the reaction of the alkaline substance with the acid present in the oil phase) causes pore space plugging and therefore permeability reduction. The application of intermittent flow is therefore less significant in the case where high initial water saturation is present. The second part of this study emphasizes on alkali-surfactant-polymer flooding. In particular, laboratory tests highlighted that the highest final oil recovery with the lowest Water-to-Oli Ratio (WOR) is obtained by aging the alkaline solution after the injection of a surfactant, and then flooding the whole system by a polymer solution.
Fractured oil-wet carbonatic reservoirs seem the best candidates for the application of this technique since aging time would allow alkali to diffuse and reverse rock wettability also in otherwise unaccessible zones. The proposed technique seems very effective to increase the ultimate oil recovery of these reservoirs. Traditionally, alkali flooding in oil-wet carbonatic reservoir is believed to require the consumption of a large mass of alkaline substances. However, the mass of this substance is responsible for the wettability reversal into a more favorable condition for oil recovery, and can be acceptably managed by a proper design of the flooding parameters
Editorial: the Tenth International Bologna Conference on Magnetic Resonance in Porous Media (MRPM10)
No full textWilliam Michelsen: Den sælsomme forvandling i N. F. S. Grundtvigs liv
No full textWilliam Michelsen: The strange Metarphosis in N. F. S. Grundtvigs life, 1956, 288 pages. By Villiam Grønbæk. The title of Dr. Michelsen’s work, which forms a supplement to his thesis, “Tilblivelsen af Grundtvigs historiesyn” (“The Origin of Grundtvig’s View of History”), is taken from the retrospective survey of his activety as a historian made by Grundtvig in 1833. In this Grundtvig states that his literary production is a reflection of his life. While Dr. Michelsen in his thesis showe the significance of Grundtvig’s reading as a child in influencing the development of his view of history in a Biblical direction, he here investigates the question as to whether the interpretation of Grundtvig’s view of history at which he arived in his thesis is in accordance with the facts which come to light in Grundtvig’s literary works and papers dating from the years 1808 to 1812 — that is, the years in which his first “Verdenskrønike” (“World Chronicle”) came out. Through the explanations of the author, which are based on the extensive use of printed and unprinted material and have nothing to do with speculation, we follow Grundtvig on his way to the Biblical view of history. The origin of Grundtvig’s view of history is set in its context in relation to his own human and religious development. Dr. Michelsen has given us the picture of Grundtvig’s personal and religious development in the years before the crisis on 1810—11 which we have long lacked. The author’s exceptionally fine qualities as a research worker have set their stamp upon the work
Deliverable D 7.1 GEOTeCH Project. Market Assessment
No full textThe present deliverable reports the activities related to the Task 7.2 - Market Assessment – aiming to carry out a preliminary assessment of the European market for the developed GEOTeCH solutions.
A detailed and complete analysis has been performed investigating first the most used conventional solutions for heating and cooling of buildings in Europe. It has been found out that the conventional heating and cooling market is very heterogeneous, composed by many different technologies, and characterized by a low level of efficiency for the installed stock: hence there is a relevant need for modernisation of existing conventional heating and cooling systems.
In this context, geothermal represents a renewable energy source with a very important potential of energy savings (up to 70%), addressing the main EU targets and goals for carbon emissions reduction. An overview of the geothermal solutions currently used for heating/cooling of buildings has been provided: shallow geothermal is the largest type (63%) of geothermal energy used in Europe, but many differences between Member States still exist about actual state of deployment of such renewable energy, mainly due to the availability of incentives and financial support schemes.
The more mature markets of geothermal installations are Sweden, Germany, France, Switzerland and Norway, which account for around 70% of all installed capacity of the continent.
In order to identify the most profitable countries for application of GEOTeCH solutions, the market potential for geothermal heat production has been investigated through ground parameters (geotechnical/geomechanical and thermal properties of the shallow underground), climate and geothermal heat flow data: for each EU country the ‘neutral zone’, as optimal depth to reach when installing BHEs thus to exploit the maximum amount of energy, has been calculated. Profitable markets have been identified with The Netherlands, Denmark, Poland, Belgium, the UK and Germany for their large percentages of territory suitable for application of GEOTeCH drilling technology.
The competitor analysis outlines that some companies present in the EU market are starting to offer innovative products for geothermal applications, but the innovation brought from the dry drilling technology developed within the project is actually beyond the state of the art.
In every Member State it is envisaged that GSHPs can play an important role for heating/cooling of residential and commercial buildings, reducing requirements for primary energy and carbon emissions. However strong competition exists with ASHPs, more commercialized in the market due to their easiness of installation, lower price and less space occupancy, although GSHPs provide higher efficiencies.
Market requirements, opportunities and barriers, plus financial models have been deeply analyzed for application of geothermal systems: the main barriers, as lack of available space in built urban environment for installation, different regulations and permits, lack of appropriate financing schemes, high cost of GSHPs and needed certifications respect to alternatives, lack of awareness and knowledge about geothermal systems, can be overcome exploiting opportunities in the market and leveraging on the key success factors of GEOTeCH solutions, identifiable in the main following points:
- less capital-intensive compact equipment; reduction of environmental risks, complexity and costs; better integration between heat exchange elements during installation; maximum use of the foundation structures; optimized hybrid solutions integrating the different geothermal systems; cost-effective geothermal systems; safety enhancement
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