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Sample records for bernd radig stefan

  1. Stefan Banach

    Indian Academy of Sciences (India)

    Stefan Banach was judged to have poor eyesight and hence unfit to serve in the military; there- ... Although often attributed to Banach, this problem is not due to him. ... to Lwów in 1944 and assisted in the attempts to rebuild the university.

  2. El mercadeo experiencial, entrevista con su creador, Bernd Schmitt

    OpenAIRE

    Villa-Gómez, C. F. (Carlos Fernando)

    2010-01-01

    El mercadeo experiencial es un profundo y novedoso concepto del mercadeo moderno que propende por crear en los clientes experiencias emocionales que generen fidelización buscando que el cliente en forma sost nida perciba, piense, sienta, actúe y se relacione con la empresa y las marcas; este enfoque del mercadeo ha sido impulsado por el profesor de la Universidad de Columbia (Nueva York), Ph.D. Bernd Schmitt, quien ha difundido la propuesta desde la publica...

  3. Despot Stefan and Byzantium

    Directory of Open Access Journals (Sweden)

    Kalić Jovanka

    2006-01-01

    Full Text Available The topic of this paper is one aspect of the relationship between Serbia and Byzantium at the beginning of the 15th Century, during the so-called "despot period" of the reign of Stefan Lazarević (1402-1427, namely the fate of the Byzantine title of Despots' in Serbia against the background of the political situation in the Balkans at the time of Turkish domination. Knez Stefan (1377-1427, Knez Lazar's son, received the title of Despotes according to the procedure long ago established at the Byzantine Court. In Byzantium, this title, which was second in rank only to the title of the Emperor, used to be endowed to the relatives of the imperial dynasty, it was not hereditary and did not depend on the territory ruled by the bearer of the title. It was a personal court title of the highest rank in Byzantium. This honor was bestowed upon the young Knez Stefan in summer of 1402 after his return from the battlefield of Angora (Ankara, where Sultan Beyazid I suffered a disastrous defeat from the hands of the Tatars. The Serbian Knez was solemnly received in Constantinople, a marriage between himself and a sister of the Byzantine Empress was arranged and John VII Palaeologus, the co-regent of the then-absent Emperor Manuel II Palaeologus, endowed him with the title of Despotes. Knez Stefan carried this title till the end of his life. It was held in great honors in Serbia and was broadened in meaning to designate a ruler's title in general, remaining alive among the Serbs even after the fall of the Byzantine Empire. Stefan Lazarević received the dignity of a Despotes once more, in 1410 in Constantinople. All this notwithstanding, the political situation in the South-East of Europe at the beginning of the 15th Century was all but favorable. Some Christian states were conquered by the Turks (Bulgaria, some were vassals of the Sultan (Byzantium, Serbia. Everything depended on the Ottomans. At the time of dynastic conflicts in the Turkish Empire (1403

  4. Colonel Stefan Ilieff [In Bulgarian

    Directory of Open Access Journals (Sweden)

    V. Dimov

    2013-06-01

    Full Text Available On 26 March 1917 colonel Stefan Ilieff, a commander of the 15th Infantry Lom regiment (Belogradchik, was killed on the battlefield at Pelister, near Bitolja (Macedonia. The text of V. Dimov, a war correspondent at the 6th Infantry Bdin division, was published in the magazine “Otechestvo” (Homeland, Volume 4, Number 45, 11 November 1917.

  5. Educating as travelling. A travel in and around the classroom with Bernd Stiegler

    Directory of Open Access Journals (Sweden)

    Facundo Giuliano

    2015-07-01

    Full Text Available Cómo referenciar este artículoGiuliano, F., & Pozzo, V. L. (2015. Educating as travelling. A travel in and around the classroom with Bernd Stiegler. Foro de Educación, 13(19, 427-454. doi: http://dx.doi.org/10.14516/fde.2015.013.019.019

  6. Generalized Stefan-Boltzmann Law

    Science.gov (United States)

    Montambaux, Gilles

    2018-03-01

    We reconsider the thermodynamic derivation by L. Boltzmann of the Stefan law and we generalize it for various different physical systems whose chemical potential vanishes. Being only based on classical arguments, therefore independent of the quantum statistics, this derivation applies as well to the saturated Bose gas in various geometries as to "compensated" Fermi gas near a neutrality point, such as a gas of Weyl Fermions. It unifies in the same framework the thermodynamics of many different bosonic or fermionic non-interacting gases which were until now described in completely different contexts.

  7. A numerical approach to Stefan problem

    International Nuclear Information System (INIS)

    Kotalik, P.

    1993-07-01

    The one-dimensional Stefan problem for a thin plate heated by laser pulses is solved by approximating the enthalpy formulation of the problem by C 0 piecewise linear finite elements in space combined with a semi-implicit scheme in time. (author) 6 figs., 5 refs

  8. The 'Byzantinisms' of king Stefan Radoslav

    Directory of Open Access Journals (Sweden)

    Maksimović Ljubomir

    2009-01-01

    Full Text Available The life-style and politics of Stefan Radoslav bear the mark of activities that indicated his special attachment to the Byzantine world. These activities were prompted by a combination of ideological ambitions and political reality, but they were not in keeping with the modest achievements of Radoslav's reign. Moreover, most of these activities belong to the time when Radoslav was heir to the throne. There is no doubt that Stefan Nemanjić the Grand Zhupan and subsequently the first crowned king, had exclusive connections with the Byzantine dynasty of the Angeloi, especially with the emperor Alexios III (1195-1203. In that context, the donor's inscription in the basic ring of the dome in the Church of the Mother of God in Studenica (1208, in which his father Stefan Nemanja, is mentioned as (former 'veleslavni gospodin vse srbske zemlje veli(ki župan i svat cara grčkog kir Alesija', is quite indicative. This ideological construction would acquire a contour in reality by means of a political marriage with one of the female offspring of Angeloi lineage, which would represent an alternative solution to Stefan's failed marriage with Eudocia, daughter of the emperor Alexios. Instead, several years elapsed in waging war with the Latins, the Bulgarians and the State of Epiros. However, efforts to create firmer, more tangible ties with the Angeloi dynasty from Epiros were not forgotten. Therefore, the Serbian monarch brought his eldest son Radoslav into play, intending to have him act as a link with the Angeloi bloodline. As a result of all this, the final attempt to have Radoslav become the husband of a princess from the Angelos dynasty is not surprising. At the end of 1219 or the beginning of 1220, he married Anna Doukaina, the daughter of the epirotic ruler Theodore I Angelos Doukas Komnenos, which at that point represented a marriage connection of the highest possible level between two ruling houses. Stefan's insistence on Serbia acquiring a stake

  9. The classical Stefan problem basic concepts, modelling and analysis

    CERN Document Server

    Gupta, SC

    2003-01-01

    This volume emphasises studies related toclassical Stefan problems. The term "Stefan problem" isgenerally used for heat transfer problems with phase-changes suchas from the liquid to the solid. Stefan problems have somecharacteristics that are typical of them, but certain problemsarising in fields such as mathematical physics and engineeringalso exhibit characteristics similar to them. The term``classical" distinguishes the formulation of these problems fromtheir weak formulation, in which the solution need not possessclassical derivatives. Under suitable assumptions, a weak solutioncould be as good as a classical solution. In hyperbolic Stefanproblems, the characteristic features of Stefan problems arepresent but unlike in Stefan problems, discontinuous solutions areallowed because of the hyperbolic nature of the heat equation. Thenumerical solutions of inverse Stefan problems, and the analysis ofdirect Stefan problems are so integrated that it is difficult todiscuss one without referring to the other. So no...

  10. Jozef Stefan Institute annual report for 1986

    International Nuclear Information System (INIS)

    Gams, M.

    1987-06-01

    This report presents the main features of the Josef Stefan Institute work in the course of the year 1986. The research projects and activities of the Institute are described in detail in the following fields: physics (theoretical, nuclear, solid state and reactor physics), chemistry (nuclear, physical, analytical, high temperature, fluorine chemistry, ceramics and biochemistry), electronics (automation, biocybernetics, robotics, computer science and information science, energy and process control and professional electronics), reactor engineering and safety, and applied mathematics and many interdisciplinary projects resulting from these fields. Special attention is paid to those fields and programmes which are important to the growth and development of the national economy. In addition, the operational structure of the Institute and its budget are also mentioned. The document contains a list of the project titles which the Institute coordinates. There is another list of printed material (journal articles, thesis, conference papers, etc.) written by researchers of the Institute. (Z.Z.). 1143 refs

  11. Das Stefan-Problem bei der Kristallzucht nach Czochralski

    OpenAIRE

    Kopetsch, H.

    1987-01-01

    The shape of the crystal-melt interface in Czochralski crystal growth may strongly influence the quality of the grown crystal. Thus a numerical algorithm has been developed which allows us to study the dynamics of this interface subject to various growth conditions. Especially the hydrodynamics in the melt is taken into account. Mathematically, a moving boundary problem (Stefan problem) has to be solved along with the flow and temperature field in melt and crystal which is treated by the meth...

  12. Numerical solution of Stefan's problem to heterogeneous materials

    International Nuclear Information System (INIS)

    Basombrio, F.G.

    1996-01-01

    We present an extension of the methodology developed by R.H. Nochetto et al. to solve the Stefan problem, to situations for which the physical properties are dependent on the spatial point (thermic non-homogeneous materials). In this report, the theoretical and computational aspects are described. With the purpose of showing the performance of programme FASES2, two illustrative examples are included. (author). 6 refs., 2 figs

  13. Transient Stefan flow and thermophoresis around an evaporating droplet

    International Nuclear Information System (INIS)

    Vittori, O.

    1984-01-01

    The particle scavening efficiency of vapour-grown ice crystals falling from mixed clouds proves to be very high. Stefan flow, an aerodynamic flow originating in the fluid surrounding evaporating or condensing bodies, pushes airborne particles away from the surface of the supercooled droplets evaporating in the vicinity of an ice crystal. The particle Brownian flux towards the surface of the ice crystal (terminal velocity of about 1 m s -1 ) is, therefore, enhanced. However, the efficiency of this process of airborne-particle removal is strongly reduced as a consequence of the cooling of the evaporating droplet which produces a ''thermal force'', thermophoresis, which counteracts the particle Stefan flow. At the surface of an evaporating droplet in a quasi-equilibrium state, the two airborne-particle velocity fields practically balance each other. This counteracting effect on particle motion needs to be evaluated in the transient case. An approach is presented which consists of reformulating the transient heat and mass transfer problem in such a way as to convert it into a purely heat transfer problem having a known analytical solution. The approach is discussed and found to be correct. The results of the computations show that the counteracting role of thermophoresis on Stefan-flow particle motion during the residence time of supercooled droplets in the vicinity of an ice crystal (from 10 -5 to 10 -4 s), which is also the time in which evaporation takes place, is considerably weak. It turns out to be practically negligible for large droplets (radius >= 8x10 -4 cm)

  14. El concepto del tiempo en el pesamiento de Josep Soler y Bernd Alois Zimmermann. Estudio comparativo de las óperas Edipo y Yocasta y Diesoldaten

    OpenAIRE

    Sánchez de Andrés, Leticia; Candidata al Doctorado en Historia y Ciencias de la Música, Facultad de Geografía e Historia, Universidad Complutense de Madrid, España

    2005-01-01

    En el presente estudio escrutaremos el concepto del tiempo en el pensamiento musical de Josep Soler y de Bernd Alois Zimmermann, dos compositores que comparten influencias y elementos comunes dentro de su filosofía y para los que dicho aspecto constituye una parte fundamental de su estética. Desarrollaremos además un análisis musicológico comparativo de sus dos obras señeras, las óperas Edipo y Yocasta (1971) de Soler y su contemporánea Die Soldaten (1965) de Zimmermann. Este trabajo integra ...

  15. Annual report of the Jozef Stefan Institute for 1987

    International Nuclear Information System (INIS)

    Gams, M.

    1988-06-01

    This report presents the main features of the Josef Stefan Institute work in the course of the year 1987. The research projects and activities of the Institute are described in detail in the following fields: physics (theoretical, nuclear, solid state and reactor physics), chemistry (nuclear, physical, analytical, high temperature, fluorine chemistry, ceramics and biochemistry), electronics (automation, biocybernetics, robotics, computer science and information science, energy and process control and professional electronics), reactor engineering and safety, and applied mathematics and many interdisciplinary projects resulting from these fields. Special attention is paid to those fields and programmes which are important to the growth and development of the national economy. In addition, the operational structure of the Institute and its budget are also mentioned. The document contains a list of the project titles which the Institute coordinates. There is another list of printed material (journal articles, thesis, conference papers, etc.) written by researchers of the Institute. (Z.Z.). 1260 refs

  16. [Stefan Hartmann. Revaler Handwerker im Spiegel fer Ratsprotokolle von 1722 bis 1755] / Paul Kaegbein

    Index Scriptorium Estoniae

    Kaegbein, Paul

    2007-01-01

    Arvustus: Stefan Hartmann. Revaler Handwerker im Spiegel fer Ratsprotokolle von 1722 bis 1755. In : Ostseeprovinzen, baltische Staaten und das Nationale. Münster : LIT, 2005. lk. 89-112. Kanuti gildi koondunud ametite organisatsioonist ja struktuurist

  17. Localization of the solution of a one-dimensional one-phase Stefan problem

    OpenAIRE

    Cortazar, C.; Elgueta, M.; Primicerio, M.

    1996-01-01

    Studiamo la localizzazione, l'insieme dei punti di blow up ed alcuni aspetti della velocità di propagazione della frontiera libera di soluzioni di un problema di Stefan unidimensionale ad una fase. We study localization, the set of blow up points and some aspects of the speed of the free boundary of solutions of a one-dimensional, one-phase Stefan problem.

  18. Annual Report of the Jozef Stefan Institute for 1989

    International Nuclear Information System (INIS)

    Gams, M.

    1990-05-01

    This report presents the main features of the Josef Stefan Institute work in the course of the year 1989. The research projects and activities of the Institute are described in detail in the following fields: physics (theoretical, nuclear, condensed matter, thin films and surfaces, solid states and reactor physics), chemistry (nuclear, physical, analytical, high temperature, fluorine chemistry, ceramics and biochemistry), electronics (automation, biocybernetics, robotics, computer science and information science, energy process control and professional electronics), reactor enineering and safety, and applied mathematics, and many interdisciplinary projects resulting from these fields. Special attention is paid to those fields and programmes which are important to the growth and development of the national economy. In addition, the operational structure of the Institute and its budget are also mentioned. The document contains a list of the project titles which the Institute coordinates. There is another list of printed material (journal articles, thesis, conference papers, etc.) written by researchers of the Institute. (Z.Z.) 151 refs.; 69 figs., 8 tabs

  19. Annual report of the Jozef Stefan Institute for 1988

    International Nuclear Information System (INIS)

    Gams, M.

    1989-07-01

    This report presents the main features of the Jozef Stefan Institute work in the course of the year 1988. The research projects and activities of the Institute are described in detail in the following fields: physics (theoretical, unclear, condensed matter, thin films and surfaces, solid states and reactor physics), chemistry (nuclear, physical, analytical, high temperature, fluorine chemistry, ceramics and biochemistry), electronics (automation, biocybernetics, robotics, computer science and information science, energy and process control and professional electronics), reactor engineering and safety, and applied mathematics and many interdisciplinary projects resulting from these fields. Special attention is paid to those fields and programmes which are important to the growth and development of the national economy. In addition, the operational structure of the Institute and its budget are also mentioned. The document contains a list of the project titles which the Institute coordinates. There is another list of printed material (journal articles, thesis, conference papers, etc.) written by researchers of the Institute. (Z.Z.). 1380 refs.; 43 figs.; 8 tabs.; 14 diags

  20. Berroia in Stefan Dušan's politics

    Directory of Open Access Journals (Sweden)

    Maksimović Ljubomir M.

    2004-01-01

    Full Text Available Being one of the most important cities in Macedonia, Berroia automatically entered the horizon of Serbian politics once Stefan Dušan got involved into the Byzantine Civil War during the forties of the fourteenth century. The King's previous invasion of Macedonia, in the thirties, had been aimed directly towards Thessalonica and was a failure. Thus, in the second phase of his politics, in which Macedonia was used as a backing in the striving for the Empire, Thessalonica was temporarily left aside, although not before first Serres and then Berroia had been captured, so as to leave it completely isolated. Initially, it was Serres rather than Berroia that Dušan was focused on, its conquest in September 1345 leading immediately to the proclamation of the Empire. Afterwards — in the first half of 1346 — Berroia was also conquered and turned into an important Serbian stronghold, Thessalonica being thus cut off, which enabled the Serbs to await a more favorable time to capture it. At the same time, the conquest of Berroia paved the way for the Serbian invasion of Epirus and Thessalia. Emperor John VI Cantacuzenus was certainly aware of the consequences of such a strategic constellation. Thus, when he finally managed to neutralize the Zelots in Thessalonica, his first move towards the change of the situation was to recuperate Berroia and surrounding towns. This was such a severe blow for the Serbs, that it immediately became clear that even Dušan's imperial power might be endangered if his position in Macedonia further weakened. He reacted promptly and recaptured Berroia and other strongholds he had lost. The conquest of Berroia was lead by the nobleman Radoslav Hlapen, who first acted as a governor on behalf of Dušan, and after the death of the Emperor practically as an independent ruler of that part of Macedonia.

  1. Podolsky electromagnetism and a modification in Stefan-Boltzmann law

    Energy Technology Data Exchange (ETDEWEB)

    Bonin, Carlos Alberto; Bufalo, Rodrigo Santos; Escobar, Bruto Max Pimentel; Zambrano, German Enrique Ramos [Instituto de Fisica Teorica (IFT/UNESP), Sao Paulo, SP (Brazil)

    2009-07-01

    Full text. As it is well-known, gauge fields that emerge from the gauge principle are massless vector fields. Considering the photon as a Proca particle, experience sets an upper limit on its mass. This limit is m{sub Proca} < 6X10{sup -17}eV (PDG 2006). However, a mass term, regardless how small, breaks the gauge symmetry. Nevertheless, there exists a theory in which is possible to introduce a mass term preserving all symmetries of Maxwell electromagnetism, including the gauge one: such theory is known as Podolsky Electromagnetism. Podolsky theory is a second- order-derivative theory and has some remarkable properties, despite those already mentioned: the theory has two sectors, a massive one and massless one, it depends on a free parameter (which happens to be the mass of the massive sector) that, like all other elementary particles's masses of the Standard Model, must be fixed through experiences, and the fact that the electrostatic potential is finite everywhere, including over a punctual charge. Just like Maxwell electromagnetism, Podolsky's is a constrained theory and, since it is of second order in the derivatives, it consists in a much richer theoretical structure. Therefore, from both, theoretical and experimental points of view, Podolsky electromagnetism is a very attractive theory. In this work we study a gas of Podolsky photons at finite temperature through path integration. We show that the massless sector leads to the famous Planck's law for black-body radiation and, therefore, to the Stefan-Boltzmann law. We also show that the massive sector of the Podolsky theory induces a modification in both these laws. It is possible to set limits on the Podolsky parameter through comparison of our results with data from cosmic microwave background radiation. (author)

  2. Electrical Discharge Platinum Machining Optimization Using Stefan Problem Solutions

    Directory of Open Access Journals (Sweden)

    I. B. Stavitskiy

    2015-01-01

    Full Text Available The article presents the theoretical study results of platinum workability by electrical discharge machining (EDM, based on the solution of the thermal problem of moving the boundary of material change phase, i.e. Stefan problem. The problem solution enables defining the surface melt penetration of the material under the heat flow proceeding from the time of its action and the physical properties of the processed material. To determine the rational EDM operating conditions of platinum the article suggests relating its workability with machinability of materials, for which the rational EDM operating conditions are, currently, defined. It is shown that at low densities of the heat flow corresponding to the finishing EDM operating conditions, the processing conditions used for steel 45 are appropriate for platinum machining; with EDM at higher heat flow densities (e.g. 50 GW / m2 for this purpose copper processing conditions are used; at the high heat flow densities corresponding to heavy roughing EDM it is reasonable to use tungsten processing conditions. The article also represents how the minimum width of the current pulses, at which platinum starts melting and, accordingly, the EDM process becomes possible, depends on the heat flow density. It is shown that the processing of platinum is expedient at a pulse width corresponding to the values, called the effective pulse width. Exceeding these values does not lead to a substantial increase in removal of material per pulse, but considerably reduces the maximum repetition rate and therefore, the EDM capacity. The paper shows the effective pulse width versus the heat flow density. It also presents the dependences of the maximum platinum surface melt penetration and the corresponding pulse width on the heat flow density. Results obtained using solutions of the Stephen heat problem can be used to optimize EDM operating conditions of platinum machining.

  3. Approximate Analytic Solutions for the Two-Phase Stefan Problem Using the Adomian Decomposition Method

    Directory of Open Access Journals (Sweden)

    Xiao-Ying Qin

    2014-01-01

    Full Text Available An Adomian decomposition method (ADM is applied to solve a two-phase Stefan problem that describes the pure metal solidification process. In contrast to traditional analytical methods, ADM avoids complex mathematical derivations and does not require coordinate transformation for elimination of the unknown moving boundary. Based on polynomial approximations for some known and unknown boundary functions, approximate analytic solutions for the model with undetermined coefficients are obtained using ADM. Substitution of these expressions into other equations and boundary conditions of the model generates some function identities with the undetermined coefficients. By determining these coefficients, approximate analytic solutions for the model are obtained. A concrete example of the solution shows that this method can easily be implemented in MATLAB and has a fast convergence rate. This is an efficient method for finding approximate analytic solutions for the Stefan and the inverse Stefan problems.

  4. Podolsky electromagnetism at finite temperature: Implications on the Stefan-Boltzmann law

    International Nuclear Information System (INIS)

    Bonin, C. A.; Bufalo, R.; Pimentel, B. M.; Zambrano, G. E. R.

    2010-01-01

    In this work we study Podolsky electromagnetism in thermodynamic equilibrium. We show that a Podolsky mass-dependent modification to the Stefan-Boltzmann law is induced and we use experimental data to limit the possible values for this free parameter.

  5. The Maxwell-Stefan description of mixture diffusion in nanoporous crystalline materials

    NARCIS (Netherlands)

    Krishna, R.

    2014-01-01

    The efficacy of nanoporous crystalline materials in separation applications is often influenced to a significant extent by diffusion of guest molecules within the pores of the structural frameworks. The Maxwell-Stefan (M-S) equations provide a fundamental and convenient description of mixture

  6. Das ritual der unterwerfung Stefan Nemanjas unter Maunel I. Komnenos (1172

    Directory of Open Access Journals (Sweden)

    Vučetić Martin Marko

    2013-01-01

    Full Text Available This article investigates the ceremonial of the subjection of the Serbian župan Stefan Nemanja to the Byzantine emperor Manuel I Komnenos (1172 and compares it with similar events of the period in question. It argues for a strong influence of western forms of conflict resolution (“deditio” in the ceremonial.

  7. Dr. Stefan Ambs: Increasing Diversity in Cancer Research: One Lab at a Time

    Science.gov (United States)

    As part of the series “Increasing Diversity in Cancer Research,” CRCHD interviewed Dr. Stefan Ambs, an investigator at NCI’s Center for Cancer Research, who is using novel approaches to discover gene differences in the tumors of African American patients.

  8. Kõigepealt tuleb moraal / Bernd Ulrich

    Index Scriptorium Estoniae

    Ulrich, Bernd

    2007-01-01

    Autor selgitab, et kliimamuutused asetavad inimkonna enneolematusse olukorda, mis tingib meie eluviisi ja majanduse radikaalse muutuse. Keskkonnapoliitikas osutuvad idealistid realistideks, kes on juba ammu teinud ettepanekuid kliimamuutuste vältimiseks

  9. Entering of Stefan Dušan into the Empire

    Directory of Open Access Journals (Sweden)

    Pirivatrić Srđan

    2007-01-01

    Full Text Available At the moment when, in October 1341, a new Civil War broke out in the Byzantium after the death of Andronicus III, the traditional views of the imperial power and the Empire underwent considerable changes. The powers of the co-rulers had been on the rise since 1272, and during the Civil War of 1321-1328 the Byzantine Empire was in effect divided, that is, two Basileis were ruling 'imperially' (autokratorikōs over their respective territories within the formally unified Empire, under the scope of relations of Superior basileus - co-basileus. Therefore, the Empire (autokratoria, imperium could multiply in the sense of rulers’ authorities, and be divided in the sense of territoriality. The imperial power and the Empire became subject to family relations and family law. In view of the family connections between the Byzantine Emperors (basileis autokratores and the monarchs of the neighboring countries and nations, the right to succession was being used as an argument in some disputes between the rulers. The Byzantine law, that is the Byzantine political views, allowed for the possibility of the so-called 'joint rule' (e oikeia arch by a Byzantine basileus autokrator and some other, foreign member of the dynasty ruling over certain region of the Byzantine Empire - a foreign ruler would be allowed to rule on condition that the Byzantine basileus be recognized as the supreme master. This scenario is known from one recorded dispute between the Byzantine basileus Andronicus III and the Bulgarian tsar Michael Assen III dating from 1328, when the Bulgarian Emperor did not accept the Byzantine rule, however. All these circumstances are of special importance since they directly precede the King Stefan Dušan’s involvement in the Civil War, that is, his later entering into the Empire. The first phase of Dušan’s involvement in the Civil War is typically conquering and opportunistic in nature, with the aim of immediate territorial enlargement. The

  10. Two-Phase Immiscible Flows in Porous Media: The Mesocopic Maxwell–Stefan Approach

    DEFF Research Database (Denmark)

    Shapiro, Alexander

    2015-01-01

    We develop an approach to coupling between viscous flows of the two phases in porous media, based on the Maxwell–Stefan formalism. Two versions of the formalism are presented: the general form, and the form based on the interaction of the flowing phases with the interface between them. The last...... of mixing” between the flowing phases. Comparison to the available experimental data on the steady-state two-phase relative permeabilities is presented....... approach is supported by the description of the flow on the mesoscopic level, as coupled boundary problems for the Brinkmann or Stokes equations. It becomes possible, in some simplifying geometric assumptions, to derive exact expressions for the phenomenological coefficients in the Maxwell–Stefan transport...

  11. The Solution of Two-Phase Inverse Stefan Problem Based on a Hybrid Method with Optimization

    Directory of Open Access Journals (Sweden)

    Yang Yu

    2015-01-01

    Full Text Available The two-phase Stefan problem is widely used in industrial field. This paper focuses on solving the two-phase inverse Stefan problem when the interface moving is unknown, which is more realistic from the practical point of view. With the help of optimization method, the paper presents a hybrid method which combines the homotopy perturbation method with the improved Adomian decomposition method to solve this problem. Simulation experiment demonstrates the validity of this method. Optimization method plays a very important role in this paper, so we propose a modified spectral DY conjugate gradient method. And the convergence of this method is given. Simulation experiment illustrates the effectiveness of this modified spectral DY conjugate gradient method.

  12. Memorias de un judío: el mundo visto por Stefan Zweig

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    Kênia Maria de Almeida Pereira

    2011-03-01

    Full Text Available El artículo traza el periplo vital e ideológico del escritor Stefan Zweig a partir de su libro El mundo que yo vi: mis memorias, de 1942. Se esboza la visión del fascismo que tuvo el intelectual, el drama del Holocausto y los terrores de la política antisemita de Adolfo Hitler a partir de la Segunda Guerra Mundial, a la vez que se formulan interrogantes sobre la política brasileña de la era de Getúlio Vargas respecto al fascismo. El texto desvela los misterios de la pasión, la vida y la muerte de Stefan Zweig durante las décadas de 1930 y 1940 en Brasil.

  13. A mathematical and numerical analysis of the Maxwell-Stefan diffusion equations

    OpenAIRE

    Boudin , Laurent; Grec , Bérénice; Salvarani , Francesco

    2012-01-01

    International audience; We consider the Maxwell-Stefan model of diffusion in a multicomponent gaseous mixture. After focusing on the main differences with the Fickian diffusion model, we study the equations governing a three-component gas mixture. We provide a qualitative and quantitative mathematical analysis of the model. The main properties of the standard explicit numerical scheme are also analyzed. We eventually include some numerical simulations pointing out the uphill diffusion phenome...

  14. A comparison of Fick and Maxwell-Stefan diffusion formulations in PEMFC gas diffusion layers

    Science.gov (United States)

    Lindstrom, Michael; Wetton, Brian

    2017-01-01

    This paper explores the mathematical formulations of Fick and Maxwell-Stefan diffusion in the context of polymer electrolyte membrane fuel cell cathode gas diffusion layers. The simple Fick law with a diagonal diffusion matrix is an approximation of Maxwell-Stefan. Formulations of diffusion combined with mass-averaged Darcy flow are considered for three component gases. For this application, the formulations can be compared computationally in a simple, one dimensional setting. Despite the models' seemingly different structure, it is observed that the predictions of the formulations are very similar on the cathode when air is used as oxidant. The two formulations give quite different results when the Nitrogen in the air oxidant is replaced by helium (this is often done as a diagnostic for fuel cells designs). The two formulations also give quite different results for the anode with a dilute Hydrogen stream. These results give direction to when Maxwell-Stefan diffusion, which is more complicated to implement computationally in many codes, should be used in fuel cell simulations.

  15. Were king Stefan the First-Crowned and his son Radoslav co-rulers?

    Directory of Open Access Journals (Sweden)

    Bubalo Đorđe

    2009-01-01

    Full Text Available The Serbian historiography considers the issue of the co-ruling of King Stefan the First-Crowned and his son Radoslav as the one finally resolved. The suggested solution on the co-rule of Stefan and Radoslav may be most succinctly expressed as following: as early as in the year of 1220, due to the frail health of Stefan the First-Crowned and Radoslav's marriage to Anne the Epirus princess, Radoslav was crowned to be the king and positioned to co-rule with his father after the Byzantine model of governing. Nevertheless this point of view has some loose ends. The notion of co-ruling and the very term of 'co-ruler' are quite freely used in the scholarly works. A general consensus on the precise meaning has not been reached yet. At the point where one author perceives a co-rule, the other categorically denies it. Basically the approach equalizing the heir to the throne and the co-ruler is wrong. Although the co-rulers in most cases were the throne heirs, they cannot be called the co-rulers because of the right to inherit the throne, but for the ruling attributes that formally established that right. The conviction of the co-rule of King Stefan and his son Radoslav is founded on the interpretation of the facts coming from the following sources: entitling charters for the monastery of Žiča, produced by Stefan and Radoslav around 1220; some segments from St. Sava's biographies by Domentian and Theodosius describing the circumstances of Stefan's death-bed leaving the throne to Radoslav; the three acts of the town of Kotor from 1221 and 1227 dated by the rule of king Radoslav, the portraits of Stefan and Radoslav next to the entrance to the Church of the Ascension in the monastery of Žiča and in the nartex of the Mileševa monastery church. In the first Žiča charter, Stefan calls Radoslav his heir, while in the second Žiča charter Stefan points out Radoslav as his first-born son blessed by him to be the king of the whole state. (jegože i

  16. Mass transfer simulation of nanofiltration membranes for electrolyte solutions through generalized Maxwell-Stefan approach

    International Nuclear Information System (INIS)

    Hoshyargar, Vahid; Fadaei, Farzad; Ashrafizadeh, Seyed Nezameddin

    2015-01-01

    A comprehensive mathematical model is developed for simulation of ion transport through nanofiltration membranes. The model is based on the Maxwell-Stefan approach and takes into account steric, Donnan, and dielectric effects in the transport of mono and divalent ions. Theoretical ion rejection for multi-electrolyte mixtures was obtained by numerically solving the 'hindered transport' based on the generalized Maxwell-Stefan equation for the flux of ions. A computer simulation has been developed to predict the transport in the range of nanofiltration, a numerical procedure developed linearization and discretization form of the governing equations, and the finite volume method was employed for the numerical solution of equations. The developed numerical method is capable of solving equations for multicomponent systems of n species no matter to what extent the system shows stiffness. The model findings were compared and verified with the experimental data from literature for two systems of Na 2 SO 4 +NaCl and MgCl 2 +NaCl. Comparison showed great agreement for different concentrations. As such, the model is capable of predicting the rejection of different ions at various concentrations. The advantage of such a model is saving costs as a result of minimizing the number of required experiments, while it is closer to a realistic situation since the adsorption of ions has been taken into account. Using this model, the flux of permeates and rejections of multi-component liquid feeds can be calculated as a function of membrane properties. This simulation tool attempts to fill in the gap in methods used for predicting nanofiltration and optimization of the performance of charged nanofilters through generalized Maxwell-Stefan (GMS) approach. The application of the current model may weaken the latter gap, which has arisen due to the complexity of the fundamentals of ion transport processes via this approach, and may further facilitate the industrial development of

  17. Bernd Herzogenrath. An Art of Desire : Reading Paul Auster. François Gavillon. Paul Auster : gravité et légèreté de l’écriture.

    Directory of Open Access Journals (Sweden)

    Claire Maniez

    2006-04-01

    Full Text Available Ces deux ouvrages ont en commun d’être des réécritures de thèses, mais les ressemblances s’arrêtent là : le premier, en effet, aborde quatre romans de Paul Auster à travers une grille de lecture lacanienne et derridéenne (entre autres ; le deuxième, plus essai que thèse, parcourt l’intégralité de l’œuvre en prose, de The Invention of Solitude à Leviathan, et convie son lecteur à une exploration de la « galaxie des signes » austériens.Dans An Art of Desire, Bernd Herzogenrath poursuit en fait...

  18. The Boundary Element Method Applied to the Two Dimensional Stefan Moving Boundary Problem

    Science.gov (United States)

    1991-03-15

    Unc), - ( UGt )t - (UG,,),,] - (UG), If we integrate this equation with respect to r from 0 to t - c and with respect to and ij on the region 11(r...and others. "Moving Boundary Problems in Phase Change Mod- els," SIGNUM Newsletter, 20: 8-12 (1985). 21. Stefan, J. "Ober einige Probleme der Theorie ...ier Wirmelcitung," S.-B. \\Vein. Akad. Mat. Natur., 98: 173-484 (1889). 22.-. "flber (lie Theorie der Eisbildung insbesondere fiber die lisbildung im

  19. Memorias de un judío: el mundo visto por Stefan Zweig

    OpenAIRE

    Kênia Maria de Almeida Pereira

    2011-01-01

    El artículo traza el periplo vital e ideológico del escritor Stefan Zweig a partir de su libro El mundo que yo vi: mis memorias, de 1942. Se esboza la visión del fascismo que tuvo el intelectual, el drama del Holocausto y los terrores de la política antisemita de Adolfo Hitler a partir de la Segunda Guerra Mundial, a la vez que se formulan interrogantes sobre la política brasileña de la era de Getúlio Vargas respecto al fascismo. El texto desvela los misterios de la pasión, la vida y la muert...

  20. Stefan Banach

    Indian Academy of Sciences (India)

    proportions; the rule of three and use of simple proportions; inference; ... inally contained a certain number N of matches, what is the probability that there are exactly k ... Ulam discovered the Monte-Carlo method for statistical sampling.

  1. A Stefan model for mass transfer in a rotating disk reaction vessel

    KAUST Repository

    BOHUN, C. S.

    2015-05-04

    Copyright © Cambridge University Press 2015. In this paper, we focus on the process of mass transfer in the rotating disk apparatus formulated as a Stefan problem with consideration given to both the hydrodynamics of the process and the specific chemical reactions occurring in the bulk. The wide range in the reaction rates of the underlying chemistry allows for a natural decoupling of the problem into a simplified set of weakly coupled convective-reaction-diffusion equations for the slowly reacting chemical species and a set of algebraic relations for the species that react rapidly. An analysis of the chemical equilibrium conditions identifies an expansion parameter and a reduced model that remains valid for arbitrarily large times. Numerical solutions of the model are compared to an asymptotic analysis revealing three distinct time scales and chemical diffusion boundary layer that lies completely inside the hydrodynamic layer. Formulated as a Stefan problem, the model generalizes the work of Levich (Levich and Spalding (1962) Physicochemical hydrodynamics, vol. 689, Prentice-Hall Englewood Cliffs, NJ) and will help better understand the natural limitations of the rotating disk reaction vessel when consideration is made for the reacting chemical species.

  2. Stefan blowing effect on bioconvective flow of nanofluid over a solid rotating stretchable disk

    Directory of Open Access Journals (Sweden)

    N.A. Latiff

    2016-12-01

    Full Text Available A mathematical model for the unsteady forced convection over rotating stretchable disk in nanofluid containing micro-organisms and taking into account Stefan blowing effect is presented theoretically and numerically. Appropriate transformations are used to transform the governing boundary layer equations into non-linear ordinary differential equations, before being solved numerically using the Runge-Kutta-Fehlberg method. The effect of the governing parameters on the dimensionless velocities, temperature, nanoparticle volume fraction (concentration, density of motile microorganisms as well as on the local skin friction, local Nusselt, Sherwood number and motile microorganisms numbers are thoroughly examined via graphs. It is observed that the Stefan blowing increases the local skin friction and reduces the heat transfer, mass transfer and microorganism transfer rates. The numerical results are in good agreement with those obtained from previous literature. Physical quantities results from this investigation show that the effects of higher disk stretching strength and suction case provides a good medium to enhance the heat, mass and microorganisms transfer compared to blowing case.

  3. Anthroponyms of Non-Biblical Origin in Stefan Yavorsky’s Sermons

    Directory of Open Access Journals (Sweden)

    Olga V. Salomatova

    2014-06-01

    Full Text Available The article focuses on archbishop Stefan Yavorsky’s works which reflect the transitional character of late 17th — early 18th centuries Russian sermons. Before that time the genre had been loyal to the canonical principles of scholasticism, and beginning with Stefan Yavorsky the sermon was enriched with new ways of material presentation and new content. The use of numerous biblical personal names, names of saints, Fathers of the Church and theologians represents a trait inherent in the sermon as a genre, a wide use of non-biblical names being chiefly a distinctive feature of scholastic works. Among those names the author points out: 1 names of saints, Fathers of the Church, church hierarchs; 2 names of gods and heroes of Antiquity; 3 names of ancient philosophers, historians and rulers; 4 names of foreign rulers, historians and public figures of the modern period; 5 names of Russian rulers. Thereby, the anthroponyms of non-biblical origin could be attributes of both “informational” (names of ancient gods and historical figures and “spiritual” (names of saints, Fathers of the Church, church hierarchs parts of a sermon. The author distinguishes the following functions of the analyzed names: 1 indication of sources of information (most frequent; 2 naming of the characters of a story or parable cited for illustrative purposes; 3 naming of a described person.

  4. Conceptual design of a clinical BNCT beam in an adjacent dry cell of the Jozef Stefan Institute TRIGA reactor

    NARCIS (Netherlands)

    Maucec, M

    The MCNP4B Monte Carlo transport code is used in a feasibility study of the epithermal neutron boron neutron capture therapy facility in the thermalizing column of the 250-kW TRIGA Mark II reactor at the Jozef Stefan Institute (JSI). To boost the epithermal neutron flux at the reference irradiation

  5. Conceptual design of a clinical BNCT beam in an adjacent dry cell of the Jozef Stefan Institute TRIGA reactor

    NARCIS (Netherlands)

    Maucec, M

    2000-01-01

    The MCNP4B Monte Carlo transport code is used in a feasibility study of the epithermal neutron boron neutron capture therapy facility in the thermalizing column of the 250-kW TRIGA Mark II reactor at the Jozef Stefan Institute (JSI). To boost the epithermal neutron flux at the reference irradiation

  6. Romain Rolland, Stefan Zweig et l’Europe (1919-1933)

    OpenAIRE

    Brancy , Jean-Yves

    2005-01-01

    International audience; Romain Rolland (1866-1944), l’homme qui a tenté de fédérer les esprits européens contre la Barbarie de la guerre en 1914, fut un précurseur de l’idée européenne moderne. Dans chaque pays, des hommes ont agi dans une même communauté d’esprit pour tendre vers ce même objectif. Parmi ceux-ci, Stefan Zweig (1881-1942), entretint avec Romain Rolland une correspondance abondante où le thème européen figure en bonne place. Les deux écrivains évoquent l’idée d’une Europe cultu...

  7. [Intellectual exchange between Germany and Latin America: an interview with Stefan Rinke].

    Science.gov (United States)

    Rinke, Stefan; da Silva, André Felipe Cândido; Junghans, Miriam; Cavalcanti, Juliana Manzoni; de Muñoz, Pedro Felipe Neves

    2014-01-01

    Current and former students of the Casa de Oswaldo Cruz/Fiocruz interviewed German historian Stefan Rinke, of the Freie Universität Berlin, who specializes in examining the historical development of Latin America as it fits into the international context. Rinke's work uses dimensions such as economic and diplomatic relations, migratory flows, and ethnic conflict as tools in his analyses of the networks of interdependence that have tied Latin America to Europe and the USA. His lens goes beyond the Latin American continent to approach globalization as a historical process, with national and regional contexts placed within a general framework. In this interview, Rinke talks about his academic career, global and transnational history, and joint projects between Germany and Latin America.

  8. Science Information Centre and Nuclear Library of 'Jozef Stefan' Institute, Ljubljana, Slovenia

    International Nuclear Information System (INIS)

    Stante, A.; Smuc, S.

    2006-01-01

    The 'Jozef Stefan' Institute Science Information Centre is the central Slovene physics library and one of the largest special libraries in Slovenia. Our collection covers the fields of physics, chemistry, biochemistry, electronics, information science, artificial intelligence, energy management, environmental science, material science, robotics etc. The Nuclear Library at the Reactor Centre Podgorica is a part of the Science Information Centre. It collects and keeps literature from the field of reactor and nuclear energy and provides information to scientists employed at the Reactor Centre and users from the Nuclear Power Plant Krsko as well as other experts dealing with nuclear science and similar fields. The orders subscribed are sent by the Science Information Centre to other libraries included in inter-library lending in Slovenia and abroad. (author)

  9. Imagining Afrikaners musically: Reflections on the ‘African music’ of Stefans Grové

    Directory of Open Access Journals (Sweden)

    S. J. Muller

    2000-04-01

    Full Text Available For nearly two decades Stefans Grové has been composing music that absorbs the cultural “Other" of Africa in a manner that defies an easy classification of ‘‘indigenous’’ principles and “exotic” appropriation. His own conception of himself as an African who composes African music challenges the inhibition of “white” Afrikaner culture and revivifies Afrikaner culture as African culture. In so doing, Grové is consciously subverting the myth of a united Africa over against a monolithic "West” - and with it the legitimacy of an autochthonous echt African culture previously excluded by “whites" and Afrikaners. This article takes a closer look at the strategies and techniques involved in this fin de siècle musical imaginings of Afrikaner identity.

  10. Maxwell-Stefan diffusion coefficient estimation for ternary systems: an ideal ternary alcohol system.

    Science.gov (United States)

    Allie-Ebrahim, Tariq; Zhu, Qingyu; Bräuer, Pierre; Moggridge, Geoff D; D'Agostino, Carmine

    2017-06-21

    The Maxwell-Stefan model is a popular diffusion model originally developed to model diffusion of gases, which can be considered thermodynamically ideal mixtures, although its application has been extended to model diffusion in non-ideal liquid mixtures as well. A drawback of the model is that it requires the Maxwell-Stefan diffusion coefficients, which are not based on measurable quantities but they have to be estimated. As a result, numerous estimation methods, such as the Darken model, have been proposed to estimate these diffusion coefficients. However, the Darken model was derived, and is only well defined, for binary systems. This model has been extended to ternary systems according to two proposed forms, one by R. Krishna and J. M. van Baten, Ind. Eng. Chem. Res., 2005, 44, 6939-6947 and the other by X. Liu, T. J. H. Vlugt and A. Bardow, Ind. Eng. Chem. Res., 2011, 50, 10350-10358. In this paper, the two forms have been analysed against the ideal ternary system of methanol/butan-1-ol/propan-1-ol and using experimental values of self-diffusion coefficients. In particular, using pulsed gradient stimulated echo nuclear magnetic resonance (PGSTE-NMR) we have measured the self-diffusion coefficients in various methanol/butan-1-ol/propan-1-ol mixtures. The experimental values of self-diffusion coefficients were then used as the input data required for the Darken model. The predictions of the two proposed multicomponent forms of this model were then compared to experimental values of mutual diffusion coefficients for the ideal alcohol ternary system. This experimental-based approach showed that the Liu's model gives better predictions compared to that of Krishna and van Baten, although it was only accurate to within 26%. Nonetheless, the multicomponent Darken model in conjunction with self-diffusion measurements from PGSTE-NMR represents an attractive method for a rapid estimation of mutual diffusion in multicomponent systems, especially when compared to exhaustive

  11. Historical basis of the Miracula of Saint Symeon in Stefan the First-Crowned’s life of Symeon

    Directory of Open Access Journals (Sweden)

    Komatina Ivana

    2014-01-01

    Full Text Available The paper is devoted to the research of the so-called Catalog of Miracles in the Life of Saint Symeon by Stefan the First-Crowned. Because the miracles are divided in the Life into those in which Symeon-Nemanja is revealed as a Saint, and those in which his heir Stefan the First-Crowned conquers the enemies of the Serbian State with his help, the attention is paid on research of their historical basis and chronological frame, as well as their religious essence. [Projekat Ministarstva nauke Republike Srbije, br. 177029: Srednjovekovne srpske zemlje (13-15. vek: politički, privredni, društveni i pravni procesi

  12. Enhanced Recovery in Tight Gas Reservoirs using Maxwell-Stefan Equations

    Science.gov (United States)

    Santiago, C. J. S.; Kantzas, A.

    2017-12-01

    Due to the steep production decline in unconventional gas reservoirs, enhanced recovery (ER) methods are receiving great attention from the industry. Wet gas or liquid rich reservoirs are the preferred ER candidates due to higher added value from natural gas liquids (NGL) production. ER in these reservoirs has the potential to add reserves by improving desorption and displacement of hydrocarbons through the medium. Nevertheless, analysis of gas transport at length scales of tight reservoirs is complicated because concomitant mechanisms are in place as pressure declines. In addition to viscous and Knudsen diffusion, multicomponent gas modeling includes competitive adsorption and molecular diffusion effects. Most models developed to address these mechanisms involve single component or binary mixtures. In this study, ER by gas injection is investigated in multicomponent (C1, C2, C3 and C4+, CO2 and N2) wet gas reservoirs. The competing effects of Knudsen and molecular diffusion are incorporated by using Maxwell-Stefan equations and the Dusty-Gas approach. This model was selected due to its superior properties on representing the physics of multicomponent gas flow, as demonstrated during the presented model validation. Sensitivity studies to evaluate adsorption, reservoir permeability and gas type effects are performed. The importance of competitive adsorption on production and displacement times is demonstrated. In the absence of adsorption, chromatographic separation is negligible. Production is merely dictated by competing effects between molecular and Knudsen diffusion. Displacement fronts travel rapidly across the medium. When adsorption effects are included, molecules with lower affinity to the adsorption sites will be produced faster. If the injected gas is inert (N2), an increase in heavier fraction composition occurs in the medium. During injection of adsorbing gases (CH4 and CO2), competitive adsorption effects will contribute to improved recovery of heavier

  13. Interview about nuclear regulatory supervision with Stefan Mappus, Baden-Wuerttemberg State Minister for the Environment and for Transport; Interview zur Kernenergieaufsicht mit Stefan Mappus, Minister fuer Umwelt und Verkehr des Landes Baden-Wuerttemberg

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2005-02-01

    Stefan Mappus, member of the Baden-Wuerttemberg State Parliament, has been State Minister for the Environment since July 14, 2004. He has criticized deficiencies in nuclear power plants, but also has expressed himself in favor of continuing to use nuclear power. This interview covers the safety of nuclear power plants in Baden-Wuerttemberg; the fines to be imposed within the framework of nuclear regulatory supervision; and ''new accents'' in supervision, among others. Mr. Mappus also comments on the activities of his Ministry in connection with events at the Philippsburg nuclear power station and the consequences drawn by the regulatory authority. (orig.)

  14. Maxwell-Stefan diffusion: a framework for predicting condensed phase diffusion and phase separation in atmospheric aerosol

    Science.gov (United States)

    Fowler, Kathryn; Connolly, Paul J.; Topping, David O.; O'Meara, Simon

    2018-02-01

    The composition of atmospheric aerosol particles has been found to influence their micro-physical properties and their interaction with water vapour in the atmosphere. Core-shell models have been used to investigate the relationship between composition, viscosity and equilibration timescales. These models have traditionally relied on the Fickian laws of diffusion with no explicit account of non-ideal interactions. We introduce the Maxwell-Stefan diffusion framework as an alternative method, which explicitly accounts for non-ideal interactions through activity coefficients. e-folding time is the time it takes for the difference in surface and bulk concentration to change by an exponential factor and was used to investigate the interplay between viscosity and solubility and the effect this has on equilibration timescales within individual aerosol particles. The e-folding time was estimated after instantaneous increases in relative humidity to binary systems of water and an organic component. At low water mole fractions, viscous effects were found to dominate mixing. However, at high water mole fractions, equilibration times were more sensitive to a range in solubility, shown through the greater variation in e-folding times. This is the first time the Maxwell-Stefan framework has been applied to an atmospheric aerosol core-shell model and shows that there is a complex interplay between the viscous and solubility effects on aerosol composition that requires further investigation.

  15. Symmetry analysis and exact solutions of one class of (1+3)-dimensional boundary-value problems of the Stefan type

    OpenAIRE

    Kovalenko, S. S.

    2014-01-01

    We present the group classification of one class of (1+3)-dimensional nonlinear boundary-value problems of the Stefan type that simulate the processes of melting and evaporation of metals. The results obtained are used for the construction of the exact solution of one boundary-value problem from the class under study.

  16. Modelling of simultaneous mass and heat transfer with chemical reaction using the Maxwell-Stefan theory II. Non-isothermal study

    NARCIS (Netherlands)

    Frank, M.J.W.; Kuipers, J.A.M.; Krishna, R.; van Swaaij, W.P.M.

    1995-01-01

    In Part I a general applicable model has been developed which calculates mass and heat transfer fluxes through a vapour/gas-liquid interface in case a reversible chemical reaction with associated heat effect takes place in the liquid phase. In this model the Maxwell-Stefan theory has been used to

  17. Experimental validation of the Maxwell-Stefan theory for the description of liquid-side mass transfer-absorption of NH3 in water using a stirred cell.

    NARCIS (Netherlands)

    Frank, M.J.W.; Frank, M.J.W.; Kuipers, J.A.M.; van Swaaij, Willibrordus Petrus Maria

    1996-01-01

    The main goal of this paper is to demonstrate the validity of the Maxwell-Stefan theory for the description of liquid phase mass transport processes in a binary mixture. To critically test this theory absorption experiments of ammonia in water were conducted in a stirred cell. The flux model

  18. Lattice Boltzmann scheme for mixture modeling: analysis of the continuum diffusion regimes recovering Maxwell-Stefan model and incompressible Navier-Stokes equations.

    Science.gov (United States)

    Asinari, Pietro

    2009-11-01

    A finite difference lattice Boltzmann scheme for homogeneous mixture modeling, which recovers Maxwell-Stefan diffusion model in the continuum limit, without the restriction of the mixture-averaged diffusion approximation, was recently proposed [P. Asinari, Phys. Rev. E 77, 056706 (2008)]. The theoretical basis is the Bhatnagar-Gross-Krook-type kinetic model for gas mixtures [P. Andries, K. Aoki, and B. Perthame, J. Stat. Phys. 106, 993 (2002)]. In the present paper, the recovered macroscopic equations in the continuum limit are systematically investigated by varying the ratio between the characteristic diffusion speed and the characteristic barycentric speed. It comes out that the diffusion speed must be at least one order of magnitude (in terms of Knudsen number) smaller than the barycentric speed, in order to recover the Navier-Stokes equations for mixtures in the incompressible limit. Some further numerical tests are also reported. In particular, (1) the solvent and dilute test cases are considered, because they are limiting cases in which the Maxwell-Stefan model reduces automatically to Fickian cases. Moreover, (2) some tests based on the Stefan diffusion tube are reported for proving the complete capabilities of the proposed scheme in solving Maxwell-Stefan diffusion problems. The proposed scheme agrees well with the expected theoretical results.

  19. Multicomponent diffusion in molten salt NaF-ZrF{sub 4}: Dynamical correlations and Maxwell–Stefan diffusivities

    Energy Technology Data Exchange (ETDEWEB)

    Baig, Mohammad Saad, E-mail: saad110baig@gmail.com; Chakraborty, Brahmananda; Ramaniah, Lavanya M. [High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-85 (India)

    2016-05-23

    NaF-ZrF{sub 4} is used as a waste incinerator and as a coolant in Generation IV reactors.Structural and dynamical properties of molten NaF-ZrF{sub 4} system were studied along with Onsagercoefficients and Maxwell–Stefan (MS) Diffusivities applying Green–Kubo formalism and molecular dynamics (MD) simulations. The zirconium ions are found to be 8 fold coordinated with fluoride ions for all temperatures and concentrations. All the diffusive flux correlations show back-scattering. Even though the MS diffusivities are expected to depend very lightly on the composition because of decoupling of thermodynamic factor, the diffusivity Đ{sub Na-F} shows interesting behavior with the increase in concentration of ZrF{sub 4}. This is because of network formation in NaF-ZrF{sub 4}. Positive entropy constraints have been plotted to authenticate negative diffusivities observed.

  20. Exact solution for a two-phase Stefan problem with variable latent heat and a convective boundary condition at the fixed face

    Science.gov (United States)

    Bollati, Julieta; Tarzia, Domingo A.

    2018-04-01

    Recently, in Tarzia (Thermal Sci 21A:1-11, 2017) for the classical two-phase Lamé-Clapeyron-Stefan problem an equivalence between the temperature and convective boundary conditions at the fixed face under a certain restriction was obtained. Motivated by this article we study the two-phase Stefan problem for a semi-infinite material with a latent heat defined as a power function of the position and a convective boundary condition at the fixed face. An exact solution is constructed using Kummer functions in case that an inequality for the convective transfer coefficient is satisfied generalizing recent works for the corresponding one-phase free boundary problem. We also consider the limit to our problem when that coefficient goes to infinity obtaining a new free boundary problem, which has been recently studied in Zhou et al. (J Eng Math 2017. https://doi.org/10.1007/s10665-017-9921-y).

  1. Stefan-Maxwell Relations and Heat Flux with Anisotropic Transport Coefficients for Ionized Gases in a Magnetic Field with Application to the Problem of Ambipolar Diffusion

    Science.gov (United States)

    Kolesnichenko, A. V.; Marov, M. Ya.

    2018-01-01

    The defining relations for the thermodynamic diffusion and heat fluxes in a multicomponent, partially ionized gas mixture in an external electromagnetic field have been obtained by the methods of the kinetic theory. Generalized Stefan-Maxwell relations and algebraic equations for anisotropic transport coefficients (the multicomponent diffusion, thermal diffusion, electric and thermoelectric conductivity coefficients as well as the thermal diffusion ratios) associated with diffusion-thermal processes have been derived. The defining second-order equations are derived by the Chapman-Enskog procedure using Sonine polynomial expansions. The modified Stefan-Maxwell relations are used for the description of ambipolar diffusion in the Earth's ionospheric plasma (in the F region) composed of electrons, ions of many species, and neutral particles in a strong electromagnetic field.

  2. Multicomponent diffusion in molten salt LiF-BeF{sub 2}: Dynamical correlations and Maxwell–Stefan diffusivities

    Energy Technology Data Exchange (ETDEWEB)

    Chakraborty, Brahmananda, E-mail: brahma@barc.gov.in; Ramaniah, Lavanya M. [High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 (India)

    2015-06-24

    Applying Green–Kubo formalism and equilibrium molecular dynamics (MD) simulations, we have studied the dynamic correlation, Onsager coeeficients and Maxwell–Stefan (MS) Diffusivities of molten salt LiF-BeF{sub 2}, which is used as coolant in high temperature reactor. All the diffusive flux correlations show back-scattering or cage dynamics which becomes pronouced at higher temperature. Although the MS diffusivities are expected to depend very lightly on the composition due to decoupling of thermodynamic factor, the diffusivity Đ{sub Li-F} and Đ{sub Be-F} decreases sharply for higher concentration of LiF and BeF{sub 2} respectively. Interestingly, all three MS diffusivities have highest magnitude for eutectic mixture at 1000K (except Đ{sub Be-F} at lower LiF mole fraction) which is desirable from coolant point of view. Although the diffusivity for positive-positive ion pair is negative it is not in violation of the second law of thermodynamics as it satisfies the non-negative entropic constraints.

  3. The Generalized Maxwell-Stefan Model Coupled with Vacancy Solution Theory of Adsorption for Diffusion in Zeolites

    Directory of Open Access Journals (Sweden)

    Seyyed Milad Salehi

    2014-01-01

    Full Text Available It seems using the Maxwell-Stefan (M-S diffusion model in combination with the vacancy solution theory (VST and the single-component adsorption data provides a superior, qualitative, and quantitative prediction of diffusion in zeolites. In the M-S formulation, thermodynamic factor (Г is an essential parameter which must be estimated by an adsorption isotherm. Researchers usually utilize the simplest form of adsorption isotherms such as Langmuir or improved dual-site Langmuir, which eventually cannot predict the real behavior of mixture diffusion particularly at high concentrations of adsorbates because of ignoring nonideality in the adsorbed phase. An isotherm model with regard to the real behavior of the adsorbed phase, which is based on the vacancy solution theory (VST and considers adsorbate-adsorbent interactions, is employed. The objective of this study is applying vacancy solution theory to pure component data, calculating thermodynamic factor (Г, and finally evaluating the simulation results by comparison with literature. Vacancy solution theory obviously predicts thermodynamic factor better than simple models such as dual-site Langmuir.

  4. Belgrade as new Jerusalem: Reflections on the reception of a topos in the age of despot Stefan Lazarević

    Directory of Open Access Journals (Sweden)

    Erdeljan Jelena

    2006-01-01

    Full Text Available In the Vita of despot Stefan Lazarević, Belgrade is compared to Jerusalem The use of this topos is aimed at a social construction of meaning within the framework of historically determined cultural discourse, based on the premise that culture itself can be observed as a complex system of signs constantly open to redefinition. This implies that the approach to its more profound understanding must rely on a method based on reconceptualization of the problem of text and context. Therefore, the true object of investigation becomes the relation between text and society whose activities are themselves perceived as a sort of behavioral text, in which that relation functions as two homologous systems of signs. As a result, our attention is focused on activities which produce social and cultural phenomena and objects — actually on the means by the use of which a world filled with meaning is created. Apart from texts, those means, as real as the text itself, belong to the instruments of creating sacred space or hierotopy, a phenomenon historically recognized as translatio Hierosolymi. Beyond any doubt, in the eyes of homo medievalis, the absolute paradigm of hierotopic activity is Constantinople the capital of the Empire and universal model through the emulation of which or through the appropriation of whose elements of identity (ranging from cults of saints to visual identity throughout history, and in particular in the later middle ages (especially following the events of 1204, a growing number of other points in the Christian oikoumene gains the status of center as a God-chosen and God-protected place — Arta, Trebizond and Nicea, Paris and Venice, Novgorod and Moscow, to name just the most prominent examples In investigating the case of Belgrade, attention is focused on the modes and vehicles of hierotopy which in the days of despot Stefan Lazarević (1402-1427 were laid as the foundation of likening Belgrade and Jerusalem as the utmost example of

  5. Continuum Model for Decontamination of Chemical Warfare Agent from a Rubbery Polymer using the Maxwell-Stefan Formulation

    Science.gov (United States)

    Varady, Mark; Bringuier, Stefan; Pearl, Thomas; Stevenson, Shawn; Mantooth, Brent

    Decontamination of polymers exposed to chemical warfare agents (CWA) often proceeds by application of a liquid solution. Absorption of some decontaminant components proceed concurrently with extraction of the CWA, resulting in multicomponent diffusion in the polymer. In this work, the Maxwell-Stefan equations were used with the Flory-Huggins model of species activity to mathematically describe the transport of two species within a polymer. This model was used to predict the extraction of the nerve agent O-ethyl S-[2(diisopropylamino)ethyl] methylphosphonothioate (VX) from a silicone elastomer into both water and methanol. Comparisons with experimental results show good agreement with minimal fitting of model parameters from pure component uptake data. Reaction of the extracted VX with sodium hydroxide in the liquid-phase was also modeled and used to predict the overall rate of destruction of VX. Although the reaction proceeds more slowly in the methanol-based solution compared to the aqueous solution, the extraction rate is faster due to increasing VX mobility as methanol absorbs into the silicone, resulting in an overall faster rate of VX destruction.

  6. Maxwell–Stefan diffusion and dynamical correlation in molten LiF-KF: A molecular dynamics study

    Energy Technology Data Exchange (ETDEWEB)

    Jain, Richa Naja, E-mail: ltprichanaja@gmail.com; Chakraborty, Brahmananda; Ramaniah, Lavanya M. [High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-85 (India)

    2016-05-23

    In this work our main objective is to compute Dynamical correlations, Onsager coefficients and Maxwell-Stefan (MS) diffusivities for molten salt LiF-KF mixture at various thermodynamic states through Green–Kubo formalism for the first time. The equilibrium molecular dynamics (MD) simulations were performed using BHM potential for LiF–KF mixture. The velocity autocorrelations functions involving Li ions reflect the endurance of cage dynamics or backscattering with temperature. The magnitude of Onsager coefficients for all pairs increases with increase in temperature. Interestingly most of the Onsager coefficients has almost maximum magnitude at the eutectic composition indicating the most dynamic character of the eutectic mixture. MS diffusivity hence diffusion for all ion pairs increases in the system with increasing temperature. Smooth variation of the diffusivity values denies any network formation in the mixture. Also, the striking feature is the noticeable concentration dependence of MS diffusivity between cation-cation pair, Đ{sub Li-K} which remains negative for most of the concentration range but changes sign to become positive for higher LiF concentration. The negative MS diffusivity is acceptable as it satisfies the non-negative entropy constraint governed by 2{sup nd} law of thermodynamics. This high diffusivity also vouches the candidature of molten salt as a coolant.

  7. History of the Botanic Garden of the Stefan Batory University in Vilna (Vilnius (1919–1939 (in Polish

    Directory of Open Access Journals (Sweden)

    Alicja Zemanek

    2016-11-01

    Full Text Available The university in Vilna (Lithuanian: Vilnius, now Vilniaus universitetas, founded in 1579 by Stefan Batory (Stephen Báthory, King of Poland and Grand Duke of Lithuania, was a centre of Polish botany in 1780-1832 and 1919-1939. The Botanic Garden established by Jean-Emmanuel Gilibert (1741–1814 in 1781 (or, actually, from 1782 survived the loss of independence by Poland (1795, and a later closure of the University (1832, and it continued to function until 1842, when it was shut down by Russian authorities. After Poland had regained independence and the University was reopened as the Stefan Batory University (SBU, its Botanic Garden was established on a new location (1919, active since 1920. It survived as a Polish institution until 1939. After the Second World War, as a result of changed borders, it found itself in the Soviet Union, and from 1990 – in the Republic of Lithuania. A multidisciplinary research project has been recently launched with the aim to create a publication on the history of science at the Stefan Batory University. The botanical part of the project includes, among others, drafting the history of the Botanic Garden. Obtaining electronic copies of archival documents, e.g. annual reports written by the directors, enabled a more thorough analysis of the Garden’s history. Piotr Wiśniewski (1884–1971, a plant physiologist, nominated as Professor in the Department of General Botany on 1 June 1920, was the organiser and the first director of the Garden. He resigned from his post in October 1923, due to financial problems of the Garden. From October 1923 to April 1924, the management was run by the acting director, Edward Bekier (1883–1945, Professor in the Department of Physical Chemistry, Dean of the Faculty of Mathematics and Natural Sciences. For 13 subsequent years, i.e. from 1 May 1924 to 30 April 1937, the directorship of the Garden was held by Józef Trzebiński (1867–1941, a mycologist and one of the pioneers of

  8. Conceptual Design of a Clinical BNCT Beam in an Adjacent Dry Cell of the Jozef Stefan Institute TRIGA Reactor

    International Nuclear Information System (INIS)

    Maucec, Marko

    2000-01-01

    The MCNP4B Monte Carlo transport code is used in a feasibility study of the epithermal neutron boron neutron capture therapy facility in the thermalizing column of the 250-kW TRIGA Mark II reactor at the Jozef Stefan Institute (JSI). To boost the epithermal neutron flux at the reference irradiation point, the efficiency of a fission plate with almost 1.5 kg of 20% enriched uranium and 2.3 kW of thermal power is investigated. With the same purpose in mind, the TRIGA reactor core setup is optimized, and standard fresh fuel elements are concentrated partly in the outermost ring of the core. Further, a detailed parametric study of the materials and dimensions for all the relevant parts of the irradiation facility is carried out. Some of the standard epithermal neutron filter/moderator materials, as well as 'pressed-only' low-density Al 2 O 3 and AlF 3 , are considered. The proposed version of the BNCT facility, with PbF 2 as the epithermal neutron filter/moderator, provides an epithermal neutron flux of ∼1.1 x 10 9 n/cm 2 .s, thus enabling patient irradiation times of nfast /φ epi -13 Gy.cm 2 /n and [overdot]D γ /φ epi -13 Gy.cm 2 /n), the in-air performances of the proposed beam are comparable to all existing epithermal BNCT facilities. The design presents an equally efficient alternative to the BNCT beams in TRIGA reactor thermal columns that are more commonly applied. The cavity of the dry cell, a former JSI TRIGA reactor spent-fuel storage facility, adjacent to the thermalizing column, could rather easily be rearranged into a suitable patient treatment room, which would substantially decrease the overall developmental costs

  9. Brasil, um país do futuro: projeções religiosas e leituras sobre um mote de Stefan Zweig

    Directory of Open Access Journals (Sweden)

    Vinicius Mariano de Carvalho

    2009-05-01

    Full Text Available Este artigo propõe-se a fazer uma leitura da obra Brasil, um país do futuro, do escritor vienense Stefan Zweig, ressaltando o quanto o discurso empregado pelo autor está revestido de certo aspecto profético quando fala do Brasil. Seu desejo de querer ver no Brasil da década de 1940 uma terra livre das intolerâncias e violências que assolavam a Europa de então, fustigada pela 2ª Guerra Mundial, fez com que Zweig revivesse a imagem mitológica de que o Brasil era uma terra paradisíaca, um éden reencontrado. A descrição que faz do Brasil, mais que otimista, adquire um aspecto profético quando o autor reforça que a harmonia e paz reinantes no país faziam deste o locus para o acontecimento de um futuro utópico, messiânico. Curiosamente o escritor/profeta, muitas vezes, trai suas profecias, projetando no Brasil valores de sua Europa e às vezes chega mesmo a se contradizer no que tange à questão da tolerância e harmonia que via no Brasil.Palavras-chave: Stefan Zweig; Literatura de viagem; Profetismo; Intolerância; Messianismo.ABSTRACTThis article makes a reading of Viennese writer Stefan Zweig’s book Brasil, um país do futuro (Brazil, a country of the future, pointing out how far the author’s discourse is endowed with certain prophetical aspects when it refers to Brazil. His desire to see Brazil, in the 40’s, as a land free from the intolerance and violence that devastated Europe during World War II made Zweig revive the mythological image of the country as a paradisiacal land, a rediscovered Eden. His description of Brazil, rather than optimistic, acquires a prophetical aspect when he emphasizes the fact that the prevailing harmony and peace of the country made it a locus for the advent of a messianic and utopian future. Curiously, the writer/prophet often betrayed his prophecies, projecting in Brazil old European values, and sometimes contradicting himself as to the issue of tolerance and harmony that he witnessed in

  10. The idea of the perfect city in the state of prince Lazar and despotes Stefan Lazarević

    Directory of Open Access Journals (Sweden)

    Radojčić Svetozar

    2008-01-01

    foundations. The new wave of piety originated from the circles of educated refugee monks, who found refuge in the small palaces, where a rather complex, monastic-feudal mentality gradually formed. The palace culture of those centers had their own pious literature, where various visions of the invisible Paradise were particularly widely read. The old idea that all the righteous would attain Heaven gained a new importance and a new interpretation at the end of the XIV century. This faith in the habitation of Heaven began to be linked to buildings on earth - to cities and monasteries. The depiction of Heaven, or the Upper Jerusalem, as it was called, had already begun in Serbian painting in the mid-fourteenth century. Around 1400, however, there was an insistence on presenting how the organization of the palace was similar to the heavenly hierarchy, how the courtiers with their appearance looked like the inhabitants of Paradise, and how the building the royal court erected resembled the heavenly houses of the 'New Jerusalem'. Such descriptions about the resemblance to the dwellings of Heaven were very frequent in Serbian literature of the late fourteenth and early fifteenth centuries. Prince Lazar resorted with increasing frequency to creating buildings according to the image of the 'Upper Jerusalem', especially the monastery of Ravanica. Andonije Epaktit gave the most exhaustive account of Ravanica-Jerusalem: Ravanica was the 'dwelling of God' and the 'door to Heaven', it had seven pinnacles or pyrgoi, and accordingly, it was similar to Jerusalem, Rome and Constantinople, and it was inhabited by monk-angels. Constantme the Philosopher wrote in a similar vein. His magnificent description of Belgrade as Jerusalem in the Life of Despotes Stefan Lazarević falls among the most important eulogies of the cities in Byzantine culture. And Belgrade - like Jerusalem, Rome and Constantinople - has 'seven pinnacles'. It resembles both the 'lower' and the 'higher' Jerusalem; so as to

  11. Maxwell-Stefan based modelling of ion exchange systems containing common species (Cd"2"+, Na"+) and distinct sorbents (ETS-4, ETS-10)

    International Nuclear Information System (INIS)

    Lito, P. F.; Aniceto, J. P. S.; Silva, C. M.

    2015-01-01

    Cadmium(II) is a toxic hazardous cation, whose presence in the environment causes great concern because of its bioaccumulation in organisms and bio amplification along food chain. Hence, the removal of cadmium compounds from industrial waters and wastewaters is particularly essential, which requires intensive experimental and modelling studies to deal with the problem. In this work, the ion exchange of Cd"2"+ ions from aqueous solution using microporous titanosilicates (ETS-4 and ETS-10) has been modelled using adapted Maxwell-Stefan equations for the ions transport inside the sorbent particles. The fundamentals of the Maxwell-Stefan equations along with correlations for the convective mass transfer coefficients have been used with advantage to reduce the number of model parameters. In the whole, the model was able to represent successfully the kinetic behaviour of 11 independent and very distinct curves of both studied systems (Cd2"+"/Na"+/ETS-4 and Cd"2"+/Na"+/ ETS-10). The predictive capability of the model has been also shown, since several uptake curves were accurately predicted with parameters fitted previously to different sets of experimental data.

  12. Weber Stefan, Damascus. Ottoman Modernity and Urban Transformation, 1808-1918, Aarhus, Aarhus University Press, 2009, 2 volumes, 464 + 664 p., 7 planches.

    Directory of Open Access Journals (Sweden)

    Brigitte Marino

    2013-01-01

    Full Text Available Cet ouvrage monumental en deux volumes est issu d’une thèse de doctorat que Stefan Weber a élaborée alors qu’il était membre du Deutsche Archäologische Institut (DAI, à Damas, et soutenue à l’Université de Berlin en 2001. Comme ses prédécesseurs allemands –d’abord K. Wulzinger et C. Watzinger (1924, puis D. Sack (1989 –, l’auteur apporte une importante contribution à notre connaissance de la ville de Damas. Il s’interroge sur la modernité ottomane qui a transformé la ville au cours du xixe...

  13. ”När det tar slut och börjar om igen”: Ekokritiska perspektiv på Stefan Castas ungdomsdystopier

    Directory of Open Access Journals (Sweden)

    Åsa Nilsson-Skåve

    2015-06-01

    Full Text Available The Swedish author Stefan Casta has written several books for children and adults, thematically addressing nature and environment. This paper highlights and discusses ideological and aesthetical aspects in his recent novel, Den gröna cirkeln (2011 and its sequel, Under tiden (2012, from an ecocritical perspective. The novels combine environmental commitment with a dystopian story about four young people who survive a climate catastrophe but get lost in a world they no longer recognize and where ordinary logic does not seem to exist. The paper elucidates this process by a comparison with Buell’s (2001 concept of toxic discourse as there are several parallells, such as elements like a lost paradise, inescapable toxic, and the oppression of powerful societal interests, throughout the story. Simultaneously, ambivalence towards culture and civilization is expressed. Nature and culture become intertwined in a way that differs from the conventional dichotomy and this complexity is the supporting structure of the texts. The four teenagers, and even more so the following generation, become symbols of a new future, a pattern recognized from much dystopian as well as children’s fiction, where the weak and oppressed turn out to be the heroes. The optimistic and didactic ambition in this kind of dystopian stories is often aimed at creating an engagement for environmental issues and a sustainable future among young people. By placing the story in an imagined future as well as adding fantastic elements, Stefan Casta creates a kind of ”Verfremdungseffekt” on phenomena we often do not question in our lifestyle. This could be a liberating relativization to the young readers; the social and cultural drives that rule many of our life choices are not essential and can therefore always be reconsidered.

  14. Dorothea Mantzel and Bernd Schulz. Francolin Illustrated School Dic

    African Journals Online (AJOL)

    rbr

    and wonder whether the Francolin Illustrated School Dictionary for Southern. Africa makes this distinction. I wonder ... The dictionary, the editors claim, is aimed at senior primary school learners who do not speak English as ... illustration of someone shooting with a bow and arrow at a target. When one turns to the headword ...

  15. DESCRIPCIÓN Y ANÁLISIS DE LOS HALLAZGOS DE LAS INVESTIGACIONES HECHAS POR STEFAN TENGBLAD SOBRE LA PRÁCTICA DIRECTIVA HASTA EL AÑO 2014

    OpenAIRE

    Dulce Romero, Claudia Patricia; Sierra Cagüeñas, Sebastián

    2015-01-01

    Se realizó el análisis de ocho artículos y un libro escrito por el profesor Stefan Tengblad desde el 2000 hasta el 2012. Durante 12 años, el autor sueco se ha dado la tarea de analizar no solo los resultados obtenidos por los escritores más importantes sobre la práctica directiva, sino que también se puso en la tarea de comparar sus estudios y resultados. En las reseñas reconstructivas se pueden identificar las variables más importantes y las conclusiones que Tengblad obtuvo después de muc...

  16. Eros e Thanatos em “Tempos Sombrios”: aspectos da teoria pulsional em diálogo com Stefan Zweig e Hannah Arendt

    Directory of Open Access Journals (Sweden)

    Érica Schlude Wels

    2017-06-01

    Full Text Available O presente artigo reflete sobre aspectos ligados à propensão do homem pela destruição e domínio do outro por meio da violência.  Nesse sentido, elencamos reflexões sobre os conceitos psicanalíticos de Eros e Thanatos, além de contribuições do pensamento de Hannah Arendt  (1987; 1995; 1997, sobretudo o conceito de “Banalidade do Mal”;  O mal concretizado pelo nazismo é monstruosamente banal e burocrático, ao mesmo tempo que eficiente e sistemático, levado a cabo por agentes superficiais (LECHTE, 2002.  Buscar-se-á estabelecer um diálogo entre esse arcabouço teórico e três novelas do escritor austríaco Stefan Zweig, ele próprio uma vítima declaradamente pacifista do exílio imposto aos escritores judeus no período da Segunda Guerra:  “A coleção invisível” (2015, [1924], “O Livreiro Mendel” (1999, [1929]  e “Xadrez, uma novela” (2015, [1944] têm a guerra como pano-de-fundo; O presente trabalho objetiva explorar aspectos da chamada “mitologia psicanalítica”, campo definido por Freud como obscuro.  Além do caráter destruidor intrínseco à natureza humana, como postulado nos textos freudianos que abordam a guerra (1916; 1933, [1932], destacamos o protótipo da pulsão de morte: compulsão à repetição e ao retorno do inorgânico, movimento regressivo de retorno a um estado anterior (ROUDINESCO; PLON, 1998.  Ao explorar a teoria das pulsões em seu dualismo Eros/Thanatos, lançamos luzes sobre o que Arendt define como “Tempos sombrios”.

  17. Eberhard Widmann (Stefan Meyer Institute, Vienna) and Silke Federmann (Ph.D. Student from Vienna in the CERN-Austrian Ph.D. program) together with a microwave cavity developed by Silke at CERN. The cavity will be used for the first time to look for spin-flip transitions of antihydrogen atoms later this year.

    CERN Multimedia

    Maximilien Brice

    2011-01-01

    Eberhard Widmann (Stefan Meyer Institute, Vienna) and Silke Federmann (Ph.D. Student from Vienna in the CERN-Austrian Ph.D. program) together with a microwave cavity developed by Silke at CERN. The cavity will be used for the first time to look for spin-flip transitions of antihydrogen atoms later this year.

  18. Stefanův problém vedení tepla s fázovou přeměnou a jeho analytické řešení

    OpenAIRE

    Kesler, René

    2017-01-01

    Tato bakalářská práce se zabývá analytickým řešením úloh vedení tepla s fázovou přeměnou, které jsou nazvány jako klasický Stefanův problém. Nejprve je odvozena diferenciální rovnice vedení tepla a také je vytvořen matematický model Stefanova problému. Největší pozornost je následně věnována odvozování analytických řešení pro úlohy, u nichž lze tato řešení nalézt. K implementaci získaných řešení ve vhodném programovacím prostředí bylo zvoleno prostředí MATLAB. Práce také obsahuje popis vytvoř...

  19. Ärge eelistage kodumaist! / Stefan Andersson

    Index Scriptorium Estoniae

    Andersson, Stefan

    2010-01-01

    Autor arvab, et tarbija ülesanne on vaadata ka toote hinda ja kvaliteeti, mitte lihtsalt tootja geograafilist asukohta. Nii saame tarbijatena selliseid tootjaid, keda väärime, hind ja kvaliteet paraneb, majanduse efektiivsus kasvab. Riigi ülesanne on tagada õiglane konkurents ja reguleerida turgu

  20. Eesti vajab kavalust / Imbi Paju, Stefan Brunow

    Index Scriptorium Estoniae

    Paju, Imbi, 1959-

    2008-01-01

    Ajakirjanikud leiavad, et Eesti propaganda peaks seoses Venemaaga olema rafineeritum ning toetama eestivenelaste identiteeti nende venekeelsete kaudu, kes kannavad endas euroopalikke väärtusi ja on Eestile lojaalsed

  1. Hawking radiation, the Stefan-Boltzmann law, and unitarization

    OpenAIRE

    Giddings, Steven B.

    2015-01-01

    Where does Hawking radiation originate? A common picture is that it arises from excitations very near or at the horizon, and this viewpoint has supported the “firewall” argument and arguments for a key role for the UV-dependent entanglement entropy in describing the quantum mechanics of black holes. However, closer investigation of both the total emission rate and the stress tensor of Hawking radiation supports the statement that its source is a near-horizon quantum region, or “atmosphere,” w...

  2. BNCT Project at the J. Stefan TRIGA Reactor

    International Nuclear Information System (INIS)

    Glumac, B.; Maucec, M.; Jeraj, R.; Kodeli, I.

    1994-01-01

    Contribution presents condensed description of the BNCT method, as one of the most promising methods of cancer radio therapy in the future. Certain planned research activities considering realization of BNCT project in Slovenia are also shown. Modelling of irradiation facility as well as mathematical simulation of neutron and photon transport are completely performed by Monte Carlo computer simulation, and for that reason some basic characteristics and capabilities of MCNP4A computer code are also presented. Finally, some results obtained up to this time are presented. (author)

  3. Some improvements to the solution of Stefan-like problems

    International Nuclear Information System (INIS)

    El-Genk, M.S.; Cronenberg, W.

    1979-01-01

    Two approximate analytical methods are developed for solving one-dimensional transient heat-conduction problems with phase transformation, where the growth rate of a frozen crust (layer) on a cold wall is sought. Both provide an accurate prediction of the instantaneous position of the moving boundary as applied to one dimensional melting and freezing problems. (author)

  4. Kuva-yi Milliye Müzesindeki Sırp Kralı II. Stefan Uroš Milutin (1282-1321 Dönemine Ait Gümüş Sikke A Silver Coin of Serbian King Stephan Uros II Milutin (1282-1321 from Kuva-yi Milliye Museum

    Directory of Open Access Journals (Sweden)

    Ceren ÜNAL

    2012-12-01

    bulunmaktadır. Kuva-yi Milliye Müzesi’nde, 2011 ve 2012 yılı Ağustos ayları arasında yapılan çalışmalar sonucu Ortaçağ Sırbistan dönemine tarihlenen bir adet nadir buluntu gümüş sikke tespit edilmiştir.Kuva-yi Milliye Müzesi’ndeki1 Sırp hükümdar II. Stefan Uroš Milutin (1282-1321 iktidarına tarihlenen bir adet gümüş sikke/dinar2, Anadolu’ya ticaret yoluyla girmi�� olmalıdır. Bir grup gümüş Venedik sikkesi ile beraber bulunan Sırp dinarı, dönemin etkin kültürlerinden Bizans İmparatorluğuna ait sanılarak sınıflanmıştır. Yapılan araştırmalar sonucu 13. yüzyıl sonu Sırp Krallığı dönemine tarihlenen gümüş sikkenin Anadolu’ya girişi ise muhtemelen Venedik ile yapılan ticaretle gerçekleşmiştir. Müzede korunan sikke Doğu ile Batı arasında, özellikle deniz aşırı ticaretin merkezi konumunda olan Anadolu’nun zengin kültürünün yansımasıdır.12. yüzyılda Bizans İmparatorluğunun gücünün zayıflamasıyla, Balkanlarda yaşayan toplumlar arasında bağımsızlık düşüncesi gelişmiştir. 12. yüzyılda kurulan Sırp Krallığı giderek güçlenerek Balkanlarda sınırlarını genişletmiş ve Bizans İmparatorluğu ile Batıdaki devletler arasında denge unsuru olarak önemli bir konuma ulaşmıştır. Sırp Krallığının, Batı’nın Doğu’ya karadan açılan yolu üzerinde olması Batı ile çeşitli ittifak ilişkileri kurmalarında etkindir. Stratejik konumu Bizans İmparatorluğunun da her zaman dostane ilişkiler kurma eğiliminde olmasına neden olmuştur.Dönemin deniz aşırı ticaretteki hakim gücü olan Venedikli tüccarlar kanalıyla Anadolu’ya girmiş olduğu düşünülen gümüş sikke nadir bir buluntudur. Bu nadir gümüş sikke Balkanlar ve Sırbistan’ın tarihi arka planı eşliğinde tanıtılacaktır.

  5. Vom auf der Planeten im Spiegel des Chorgesangs. Knabenchor Tallinn und Orchester aus Estland geben ein Konzert in der Karlsruher Stephanskirche / Bernd Willimek

    Index Scriptorium Estoniae

    Willimek, Bernd

    1992-01-01

    Planeetide liikumise peegeldus koorilaulus. Tallinna poistekoor ja orkester Eestist andsid kontserdi Karlsruhe Stephanskirhes. Eesti kultuuripäevadest Karlsruhes. Eesti muusikast esitati Urmas Sisaski, Mihkel Lüdigi, Veljo Tormise ja Rudolf Tobiase loomingut

  6. Zur Beteiligung des Bundestages an gemischten völkerrechtlichen Abkommen. Internationale Freihandelsabkommen als Herausforderung des deutschen Europa- und Außenverfassungsrechts / Bernd Grzeszick, Juliane Hettche

    Index Scriptorium Estoniae

    Grzeszick, Bernd

    2016-01-01

    Jagatud pädevusest ELi kaubanduspoliitikas ja liikmesriigi parlamentide osalusest rahvusvaheliste vabakaubanduslepingute sõlmimisel Saksamaa näitel (põhiseaduse artiklite 23 lg 2 ja 59 lg 2 tõlgendamine ning konstitutsioonikohtu hinnang). Kokkuvõte inglise keeles. Samal teemal artikkel ka lk. 268-282.

  7. Experience and perspectives of nuclear power plant reliability evaluation at Institute J. Stefan; Izkusnje in perspektive vrednotenja zanesljivosti jedrskih elekrarn na Institutu Jozef Stefan

    Energy Technology Data Exchange (ETDEWEB)

    Susnik, J [Institut Jozef Stefan, Ljubljana (Yugoslavia)

    1979-07-01

    First a short report on development of computer programs for the reliability evaluation and the findings regarding the adequate reliability of Nuclear Power Plant safety systems are given. Then evaluation of the general NPP availability situation is discussed and suggestions for planning and achieving an adequate high availability are presented. (author)

  8. Autobiographische Krankheitserzählungen in der Gegenwartsliteratur: Siri Hustvedt, Paul Kalanithi, Verena Stefan

    Directory of Open Access Journals (Sweden)

    Nina Schmidt

    2017-12-01

    Full Text Available Illness requires narration: it fulfills a crucial role in the cooperation between patient and doctor, is demanded by one’s social environment, and emerges in the identity work triggered by a medical diagnosis (which in itself constitutes a first narrative model for the ill person to accept, rework or reject. This article examines how contemporary illness narratives recount such communication and how they reflect on the possibilities and limits of narration. It triangulates three life writing texts: Verena Stefan’s Fremdschläfer (2007 about the Swiss-German author’s own experience of breast cancer, Siri Hustvedt’s The Shaking Woman or a History of my Nerves (2010, describing the novelist’s quest for knowledge about the ambiguous shaking she displays, and Paul Kalanithi’s When Breath Becomes Air (2016, which focuses on the author’s role reversal (from doctor to patient and the approach of his death from lung cancer. Narrative patterns and role models are being traced here; questions about voice and agency appear central in each text. What knowledge does such contemporary life writing hold, and what does it have to say about the dominant conceptualisations of states of health and illness?

  9. Stefan Batory’s military and political plans concerning Moscow state in 1584-1587

    Directory of Open Access Journals (Sweden)

    V. H. Boyko

    2015-07-01

    In the article, the methods of the Polish king, his interaction with the Pope in matters of policy regarding Muscovy are also studied. The positions of various groups of the nobility of the Polish­Lithuanian Commonwealth which they defended in Sejmiks and Sejms are analyzed. The publication considers Embassies of that time and their results. The basic controversial issues in the policy of both countries are investigated.

  10. Al-Dulimi and Montana Management Inc. v. Switzerland / Stefan Kadelbach

    Index Scriptorium Estoniae

    Kadelbach, Stefan

    2016-01-01

    Euroopa Inimõiguste Kohtu lahendist asjas Al-Dulimi ja Montana Management Inc vs. Šveits, mis puudutas ÜRO julgeolekunõukogu resolutsiooni, millega pandi riikidele kohustus külmutada viivitamatult ka Iraagi vanemametnikele või nende äriühingutele kuuluv vara

  11. A Stefan model for mass transfer in a rotating disk reaction vessel

    KAUST Repository

    BOHUN, C. S.

    2015-01-01

    chemical reactions occurring in the bulk. The wide range in the reaction rates of the underlying chemistry allows for a natural decoupling of the problem into a simplified set of weakly coupled convective-reaction-diffusion equations for the slowly reacting

  12. Historical and Condition Survey of the St. Stefan Bulgarian Metal Church in Istanbul

    Czech Academy of Sciences Publication Activity Database

    Ivanova, B.; Ganev, R.; Drdácký, Miloš

    2013-01-01

    Roč. 7, č. 6 (2013), s. 693-714 ISSN 1558-3058 EU Projects: European Commission(XE) 244123 - NIKER Institutional support: RVO:68378297 Keywords : prefabricated metal structure * cast iron * steel church * atmospheric corrosion Subject RIV: AL - Art, Architecture, Cultural Heritage Impact factor: 0.714, year: 2013 http://www.tandfonline.com/doi/abs/10.1080/15583058.2012.662263#.UkPxqJFItaR

  13. New Fundamental Light Particle and Breakdown of Stefan-Boltzmann's Law

    Directory of Open Access Journals (Sweden)

    Minasyan V.

    2011-04-01

    Full Text Available Recently, we predicted the existence of fundamental particles in Nature, neutral Light Particles with spin 1 and rest mass m = 1 : 8 10E-4 me, in addition to electrons, neutrons and protons. We call these particles Light Bosons because they create electromagnetic field which represents Planck’s gas of massless photons together with a gas of Light Par- ticles in the condensate. Such reasoning leads to a breakdown of Stefan–Boltzmann’s law at low temperature. On the other hand, the existence of new fundamental neutral Light Particles leads to correction of such physical concepts as Bose-Einstein conden- sation of photons, polaritons and exciton polaritons.

  14. [Pärtel Lippus. The acoustic features and perception of the Estonian quantity system] / Stefan Werner

    Index Scriptorium Estoniae

    Werner, Stefan

    2012-01-01

    Arvustus: Pärtel Lippus. The acoustic features and perception of the Estonian quantity system. Tartu : Tartu University Press, 2011. (Dissertationes philologiae estonicae Universitatis Tartuensis ; 29)

  15. Basic research using the 250 kW research reactor of the Jozef Stefan Institute

    International Nuclear Information System (INIS)

    Dimic, V.

    1984-01-01

    The 250 kW TRIGA Mark II reactor is a light water reactor with solid fuel elements in which the zirconium hydride moderator is homogeneously distributed between enriched uranium. The reactor therefore has a large prompt negative temperature coefficient of reactivity; the fuel also has a very high retention of radioactive fission products. The experimental facilities include a rotary specimen rack, a central in-core radiation thimble, a pneumatic transfer system and pulsing capability. Other experimental facilities include two radial and two tangential beam tubes, a graphite thermal column and a graphite thermalizing column. At the steady state power of 250 kW the peak flux is 1x10 13 n/cm 2 in the central test position. In addition, pulsing to about 2000 MW is usually provided giving peak fluxes of about 2x10 16 n/cm 2 sec. All TRIGA reactors produce a core-average thermal neutron flux of about 10 7 n.v. per watt. Only with very large accelerators can such high fluxes be achieved. The types of research could be summarized as follows: thermal neutron scattering, neutron radiography, neutron and nuclear physics, activation analysis, radiochemistry, biology and medicine, and teaching and training. Typical applied research with a 250 kW reactor has been conducted in medicine, in biology, archaeology, metallurgy and materials science, engineering and criminology. It is well known that research reactors have been used routinely to produce isotopes for industry and medicine. We can conclude that the 250 kW TRIGA reactor is a useful and wide ranging source of radiation for basic and applied research. The operation cost for this instrument is relatively low. (author)

  16. Teistsugune vaade juhtide tasustamisele / Jack Welch, Suzy Welch ; intervjueerinud Stefan Eiselin

    Index Scriptorium Estoniae

    Welch, Jack

    2010-01-01

    USA juhtimisspetsialistide Jack ja Suzy Welchi hinnangul võib tippjuhtidele makstava palga ümber kerkinud poleemika üks võimalikke põhjuseid lisaks halvale kommunikatsioonile olla ka ideoloogiate kokkusobimatus

  17. Identification of the Heat Transfer Coefficient in the Inverse Stefan Problem by Using the ABC Algorithm

    Directory of Open Access Journals (Sweden)

    E. Hetmaniok

    2012-12-01

    Full Text Available A procedure based on the Artificial Bee Colony algorithm for solving the two-phase axisymmetric one-dimensional inverse Stefanproblem with the third kind boundary condition is presented in this paper. Solving of the considered problem consists in reconstruction of the function describing the heat transfer coefficient appearing in boundary condition of the third kind in such a way that the reconstructed values of temperature would be as closed as possible to the measurements of temperature given in selected points of the solid. A crucial part of the solution method consists in minimizing some functional which will be executed with the aid of one of the swarm intelligence algorithms - the ABC algorithm.

  18. Das Projekt Wissensgesellschaft : Nordeuropäische Traditionen und die Transformation der Ostseeregion = Teadmisühiskonna projekt : Põhja-Euroopa traditsioonid ja Läänemere regiooni transformatsioon / Bernd Henningsen

    Index Scriptorium Estoniae

    Henningsen, Bernd

    2005-01-01

    Teadmistepõhise ühiskonna mõiste tuleneb sellest, et ühiskonna produktiivsus ja heaolu ei sõltu niivõrd kapitalist, tööst ning riigist, vaid aina suuremas ulatuses teadmistest. Põhja-Euroopa teadusasutuste/kõrgkoolide koostöö võimalustest ja käivitunud projektidest. Vt. ka kommentaare lk. 217-222,467-472

  19. Bernd Herzogenrath (ed. From Virgin Land to Disney World : Nature and Its Discontents in the U.S.A. of Yesterday and Today. Critical Studies, Vol. 15.

    Directory of Open Access Journals (Sweden)

    Thomas Carmichael

    2006-04-01

    Full Text Available The essays in this volume present diverse readings of the place of nature in American culture from the European arrival to the postmodern period. Theoretically informed and richly considered, these essays can loosely be divided into those which take a specific historical moment or representation as their object—Thomas Cole’s Hudson river paintings, Poe’s Julius Rodman, antinomianism in the 1960s, Sam Peckinpah,’s The Wild Bunch, or the cultural logic of the Las Vegas strip, to cite just a few...

  20. A Fourth Order Accurate Discretization for the Laplace and Heat Equations on Arbitrary Domains, with Applications to the Stefan Problem

    National Research Council Canada - National Science Library

    Gibou, Frederic; Fedkiw, Ronald

    2004-01-01

    In this paper, the authors first describe a fourth order accurate finite difference discretization for both the Laplace equation and the heat equation with Dirichlet boundary conditions on irregular domains...

  1. [Pietro U. Dini. Prelude to Baltic linguistics : earliest theories about Baltic languages (16th century)] / Stefan Donecker

    Index Scriptorium Estoniae

    Donecker, Stefan, 1977-

    2015-01-01

    Arvustus: Dini, Pietro U. Prelude to Baltic linguistics : earliest theories about Baltic languages (16th century). (On the boundary of two worlds : identity, freedom, and moral imagination in the Baltics, 36). Verlag Rodopi, Amsterdam und New York 2014

  2. Operation and maintenance of the 250 kW TRIGA Mark II reactor at the J. Stefan Institute

    International Nuclear Information System (INIS)

    Dimic, V.

    1980-01-01

    Since the last TRIGA Conference, the reactor has completed approximately 4800 operating hours without major problems. The problem with the lack of fresh fuel elements is going to be solved after the signing of a new agreement for the supply of fuel between the IAEA, the Yugoslav and US Governments. In order to increase the reactivity the fuel elements from the outer zone we shuffled to the inner zone, and old fuel elements from the fuel container were added to the F ring. Due to the large demand for irradiation, a new pneumatic facility for loading and unloading the samples in the rotary specimen rack or central thimble has been constructed and installed. A configuration based on two microcomputers in a master slave hierarchical organisation for automatic data logging and direct has been finished and the system was installed after extensive testing. The reactor operation is now more reliable and simpler for the operators. Some of the original instrumentation of the reactor has been gradually substituted because of ageing: a start-up channel with digital display, a power integrator, a digital electronic rod position indicator, a digital power range switch without resistors and a new 2-pen recorder have been installed. The following instrumentation was ordered by the IAEA from the Hartmann and Brawn company: a start-up channel, a log channel, a safety channel, an automatic power control and water temperature, conductivity, level and activity measuring units. During the last year, with the help of our nuclear chemistry department, the production of high concentration and high purity technetium-99 m for medical use was developed by a solvent extraction method

  3. Research work with TRIGA Mark II at the Nuclear Chemistry Section of the 'J. Stefan' Institute in Ljubljana

    International Nuclear Information System (INIS)

    Byrne, A.R.; Dermelj, M.; Kosta, L.; Ravkin, V.; Stegnar, P.

    1978-01-01

    The general features of our research programme using TRIGA MK II, as outlined at the last TRIGA Reactor Users Conference in Vienna, September 28-30,1976, remain the same; namely, neutron activation analysis for trace and some minor elements. The four main areas presently investigated are a) environmental studies, b) life sciences research, c) standardization and d) methodology for specific problems arising in the first three topics

  4. Operation and maintenance of the 250 kW TRIGA Mark II reactor at the J. Stefan Institute

    International Nuclear Information System (INIS)

    Dimic, V.

    1982-01-01

    Over the last two years the TRIGA Mark II reactor in Ljubljana has been operated at an energy release of about 2250 MWh or about 4200 hours per year. In this period, about 2000 samples were irradiated. Since the last TRIGA Owners' Conference there has been an increase in all operational data because of a very extensive programme of irradiation of molybdenum for the everyday production of technetium-99 m by a solvent extraction method. Because of its age and absolencence replacement of the console electronics was considered some time ago. Therefore, partly new instrumentation was installed this year. A new console is under construction. Furthermore, a new core configuration was established after 7 fresh FLIP fuel elements were delivered by GA. At this time it was noticed that 2 dummy elements are stuck in the upper grid plate. They will be exchanged during the regular maintenance work in August this year. During the last two years the reactor has been operated without any longer shut-down due to technical difficulties. (author)

  5. Miks Ida-Euroopa reformidest väsis / Stefan Wagstyl, Christopher Condon ; tõlk. Erik Aru

    Index Scriptorium Estoniae

    Wagstyl, Stefan

    2006-01-01

    Ungari, Tšehhi, Poola, Slovakkia sisepoliitilisest olukorrast. Autorite sõnul on kõikjal piirkonnas langenud eurotsooniga liitumise kavad poliitika ohvriks; majandusteadlaste väitel jätab Kesk-Euroopa kasutamata võimaluse läbi viia uuendusi, mida peab hiljem niikuinii tegema

  6. The Coming Revolution of Peer Production and Revolutionary Cooperatives. A Response to Michel Bauwens, Vasilis Kostakis and Stefan Meretz

    Directory of Open Access Journals (Sweden)

    Jakob Rigi

    2014-04-01

    Full Text Available This article agrees with Meretz (2014 that the peer producing cooperatives which are proposed by Bauwens & Kostakis (2014 will become parts and parcels of the capitalist economy. Further, it argues that the so called Peer Production Licenses (PPL, originally designed by Dmitry Kleiner (2010, which is the basis of their proposal is a rent seeking instrument. Contra Bauwens & Kostakis, it argues that, from the perspectives of both reform and revolution, GPL is profoundly anti-capitalist. The article critiques Meretz`s understanding of exchange and reciprocity, on the one hand, and his underestimation of GPL`s communist aspect, on the other. On the positive side, the article, explicating the communist nature of GPL-oriented peer production, speculates about the general contours of a society where peer production is the dominant mode of production. The technological basis of this society, the article suggests, will be digital copying and automation. Spatially, it will be based on localities that transcend the current division between the city and country, synthesising agriculture with industrial, affective and symbolic production. The rise of a globally unified revolutionary social struggle which adopts peer production as its platform is indispensible for the transformation of capitalism into such a society.  A global network of revolutionary peer producing cooperatives which break with market and reduce their relations to it to an absolutely unavoidable necessary minimum can be a significant component of this social struggle. The building of these revolutionary cooperatives requires a massive exodus from the city to the country.

  7. Operation and maintenance of the 250 kW TRIGA Mark II reactor at the J. Stefan Institute

    International Nuclear Information System (INIS)

    Dimic, V.; Mrcun, I.

    1978-01-01

    During the last two years the reactor was in operation without any longer shut-down. Only a small bending of the regulating control rod was noticed. This failure was repaired. One of the major problem, but not connected to the operation of the reactor, is the delivery of the new FLIP fuel elements. Since the beginning of operation, the reactor has been at full power about 24-00 hours per year, or 220 hours per month, which means that the utilization of the reactor in Ljubljana is relatively very high. One of the reasons for this high utilization is the quite extensive production of radioactive isotopes, especially short lived, for various consumers and the irradiation of samples for our nuclear chemistry division. Problems with rotary specimen rack occurred and a new rotary specimen rack was installed. During the last years some of the original instrumentation of the reactor was substituted because of ageing of the electronics or to improve the operational capabilities of the reactor

  8. Characterization of a Cytokinin Response Factor in Arabidopsis thaliana

    OpenAIRE

    Ketelsen, Bernd

    2012-01-01

    The papers of this thesis are not available in Munin: 1. Bernd Ketelsen, Rainer Schwacke, Kirsten Krause and Karsten Fischer: 'Transcriptional activation by Cytokinin Response Factor 5 is governed by an acidic Cterminus containing two conserved domains' (manuscript) 2. Bernd Ketelsen, Stian Olsen, Kirsten Krause and Karsten Fischer: 'Cytokinin responsive factor 5 (CRF5) is involved in root development, hormonal crosstalk and sugar metabolism in Arabidopsis thaliana' (manuscript) 3. Bernd K...

  9. [Rets. rmt. : Stefan Halper, Jonathan Clarke. America Alone : The Neo-Conservatives and the Global Order. Cambridge 2004] / Maria Mälksoo

    Index Scriptorium Estoniae

    Mälksoo, Maria, 1979-

    2005-01-01

    Traditsiooniliste konservatiivide S. Halperi ja J. Clarki raamat harutab lahti neokonservatiivse ilmavaate, selle liikumise kujunemise ja mõjuvõimu laienemise ning näitavad, kuidas uuskonservatiivid võtsid võimu USA Riigidepartemangus ja Pentagonis

  10. Oceanographic profile temperature and salinity measurements collected using bottle from the STEFAN MALYGIN and SAMOED in the Arctic in 1931 (NODC Accession 0001090)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature, salinity, and meteorology data received at NODC on 05/02/03 by Igor Smolyar from the personal library of Dr. Aleksey Zuyev, Murmansk Branch of the...

  11. [The Reception of Medieval Europa in the Baltic Sea Region. Papers of the XIIth Visby Symposium held at Gotland University, Visby] / Stefan Donecker

    Index Scriptorium Estoniae

    Donecker, Stefan, 1977-

    2011-01-01

    Arvustus : The Reception of Medieval Europa in the Baltic Sea Region. Papers of the XIIth Visby Symposium held at Gotland University, Visby. Viby : Gotland University Press, 2009. (Acta Visbyensia. 12)

  12. Euroopa püüab toime tulla idatööliste marsiga läände / Sarah Laitner, Stefan Wagstyl

    Index Scriptorium Estoniae

    Laitner, Sarah

    2006-01-01

    Mitmed EL-i nn. vanad riigid kõhklevad, kas kaotada piirangud Ida-Euroopa tööjõule. Briti valitsuse väitel on riigi majandus tööturu piirangu kaotamisest kasu saanud, samas on suurenenud noorte pikaajaline töötus. Ida-Euroopas on aga mõnes valdkonnas tekkinud tööjõupuudus. Lisa: Iiri pelgab olukorda tööjõuturul. Tabel: Riikide suhtumine tööjõu vaba liikumise piirangutesse

  13. ¿THE WASTE LAND? (Notas sobre la cultura europea de los años 20 y el caso de Stefan Zweig

    Directory of Open Access Journals (Sweden)

    Juan Carlos Rodríguez

    2013-12-01

    Full Text Available La reciente publicación en España del libro 1914. De la paz a la guerra (Turner, Madrid, 2013 de la profesora de Oxford Margaret MacMillan ha vuelto a hacernos recor- dar una pregunta incómoda que aún suele levantar ampollas: ¿qué ocurrió para que en 1914 todo saltara por los aires en una Europa que se autoconsideraba idílica y consolidada al menos desde la mitad del siglo anterior? ¿Cómo la gran cultura europea –que sin duda existió- no previno aquella catástrofe, y menos aún la debacle total desencadenada con la II guerra mundial apenas veinte años después, entre 1939 y 1945?

  14. A Sinner or a Saint: the image of Mary, Queen of Scots in the works of Friedrich Schiller, Juliusz Słowacki and Stefan Zweig

    Directory of Open Access Journals (Sweden)

    Melkov Andrey Sergeevich

    2017-04-01

    Full Text Available The artistic image of Mary, Queen of Scots in the works of F. Schiller, J. Słowacki and S. Zweig are researched in the article. The Queen’s life, character, inner world and psychological portrait appear on the pages of the classicists’ works in the context of the era she lived. The turbulent historical processes that took place in England and Scotland at the end of the Middle Ages and the beginning of the Early Modern Period led to the phenomenon of Mary Stuart’s personality. Obviously the creativity of the authors whose works were dedicated to Mary I of Scotland was influenced by the experience learned from the lessons of their time. It was reflected in the classicists’ analyses and description of the past. Romanticistsof the 19th century, F. Schiller and J. Słowacki, interpreted the personality of Mary Stuart in the sinner/saint dichotomy, but S. Zweig at the historic break in the 30s of the 20th century departed from the unilateralism of such an approach. In his romanced biography of Mary, Queen of Scots he tells about the rises and falls of his heroine. S. Zweig presents Mary I of Scotland as a wonderful, passionate and suffering woman, who even 400 years after her death inspires and excites peoples’ minds and hearts.

  15. [Peter von Brackel. Christlich Gesprech von der grawsamen Zerstörung in Lifland durch den Muscowiter vom 58. Jar her geschehenn...] / Stefan Donecker

    Index Scriptorium Estoniae

    Donecker, Stefan, 1977-

    2015-01-01

    Arvustus: Christlich Gesprech von der grawsamen Zerstörung in Lifland durch den Muscowiter vom 58. Jar her geschehenn: auch ihren Ursachen mit einer kurtzen Predig und Vermanung, wie beid, Gotlosenn unnd Frommen, diese schreckliche Mutation fruchtbarlich behertzigen und ihnen zu Nutz machen sollen: durch Timannum Brakel Livoniensem, der Gemeine Christi vonn der Augsburgischen Confession Prediger zu Anttorf einfeltig gestellet unnd inn Druck verfertiget = Darstellung der Geschichte Livlands vor und während des "Livländischen Krieges" bis 1578 in gereimter Dialogform und Prosa von dem Prediger und Geschichtsschreiber Timann Brakel : Originaltext und Übersetzung ins Hochdeutsche mit Kommentaren, Ergänzungen, Bildern und dem Lebenslauf des Timann Brakel. (Beiträge zur baltischen Geschichte, 19). Verlag Harro von Hirschheydt. Wedemark 2012

  16. Oranzh häire : Kremli niiditõmbajad kardavad revolutsiooni tulekut / Neil Buckley, Stefan Wagstyl ; tõlk. Erik Aru

    Index Scriptorium Estoniae

    Buckley, Neil

    2005-01-01

    Autorite sõnul püüab Kreml tõkestada mehhanisme ja organisatsioone, mis võiksid toetada opositsiooni presidendikandidaadi esiletõusu. Kreml on andnud ka märku, et tihendatakse valvet kolmanda sektori asutuste üle. Endine asepeaminister Boriss Nemtsov peab oranzhi revolutsiooni toimumist Venemaal võimatuks, tulla võib punane või pruun revolutsioon. Lisa: Putin kinnitab, et kolmandat korda ei kandideeri

  17. Evaluation of Manual Wheelchair Performance in Everyday Life Lucas van der Woude, Sonja de Groot, Stefan van Drongelen, Thomas Janssen, Janneke Haisma, Linda Valent and Dirkjan Veeger

    NARCIS (Netherlands)

    van der Woude, Lucas; de Groot, Sonja; van Drongelen, Stefan; Janssen, Thomas W.; Haisma, Janneke A.; Valent, Linda J M; Veeger, DirkJan (H. E. J.)

    2009-01-01

    Evaluation of wheelchair performance (capacity and skills) is crucial in the investigation of wheeled mobility in people with a spinal cord injury (SCI). Manual wheelchair use is a complex combination of skills, which together determine overall functioning, daily activities, participation, and

  18. Evaluation of Manual Wheelchair Performance in Everyday Life Lucas van der Woude, Sonja de Groot, Stefan van Drongelen, Thomas Janssen, Janneke Haisma, Linda Valent and Dirkjan Veeger

    OpenAIRE

    van der Woude, Lucas; de Groot, Sonja; van Drongelen, Stefan; Janssen, Thomas W.; Haisma, Janneke A.; Valent, Linda J M; Veeger, DirkJan (H. E. J.)

    2009-01-01

    Evaluation of wheelchair performance (capacity and skills) is crucial in the investigation of wheeled mobility in people with a spinal cord injury (SCI). Manual wheelchair use is a complex combination of skills, which together determine overall functioning, daily activities, participation, and quality of life. The evaluation of wheelchair performance requires a systematic biophysical approach that appreciates the importance of the individual elements of the wheelchair-user combination: the wh...

  19. Journal of Genetics | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Genetics. Bernd Rosenbusch. Articles written in Journal of Genetics. Volume 86 Issue 2 August 2007 pp 173-175 View Point. Human oocyte chromosome analyses need a standardized presentation of the results · Bernd Rosenbusch · More Details Fulltext PDF. Volume 87 Issue 2 August 2008 pp ...

  20. Developing Treatment, Treatment Validation, and Treatment Scope in the Setting of an Autism Clinical Trial

    Science.gov (United States)

    2012-10-01

    Author: Ana R Rodriguez Order of Authors: Ana R Rodriguez; Bernd W. Spur * Graphical Abstract (for review) Prof...Sincerely yours, Bernd W. Spur Ph.D. *Response to Reviewers Graphical Abstract To create your abstract, type over the instructions in the template box

  1. Nemtsõ razbivajut tabu i võvodjat na ekran Gitlera

    Index Scriptorium Estoniae

    2004-01-01

    2004.a. lõpul ja 2005.a. algul jõuavad saksa publikuni kaks linateost, kus peategelaseks on Adolf Hitler : Bernd Eichingeri "Allakäik" ("Der Untergang") ja Heinrich Breloeri "Speer ja tema" ("Speer und er")

  2. An Interview to the High Rank Managers of VW Asia

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    <正> Person’s introduction John Boley, (Editorial Consultant of CHINA AUTO) Dr. Bernd Leissner (President, VW Asia-Pacific) Mr. Walter Hanek, (Managing director, VW Group China Import)About the cost of production

  3. "Allakäigu" Adolf Hitler paistab päris inimese moodi / Andres Laasik

    Index Scriptorium Estoniae

    Laasik, Andres, 1960-2016

    2004-01-01

    Mängufilm, kus peategelaseks on Adolf Hitler - "Allakäik" ("Der Untergang") : stsenarist ja produtsent Bernd Eichinger : režissöör Oliver Hirschbiegel : Saksamaa 2004. Lisa "Pimedad Ööd tahavad Hitlerit"

  4. Matriarhaalne edasikestmine / Jüri Laulik

    Index Scriptorium Estoniae

    Laulik, Jüri, 1959-

    2008-01-01

    12. PÖFFi filmidest: Bernd Böclichi "Kuu ja teised armukesed" ("Der Mond und andere Leibhaber", Saksamaa), Mike Leigh' "Happy-Go-Lucky" (Suurbritannia), Kirill Serebrennikovi "Jüripäev" ("Jurjev den", Venemaa)

  5. 3. forum bioenergy. Politics, market, finances, marketing and distribution, export. Proceedings 2007; 3. Forum Bioenergie. Politik, Markt, Finanzierung, Marketing and Vertrieb, Export. Tagungsband 2007

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    ); Financing possibility of the KfW within the range bio energy (Cornelia Winter); Formation of the public opinion by the press (Heiko Schwarzburger); Chances and possibilities with the press work (Stefan Gurda); Expectations of a journalist to a good press conference (Alexander Morhart); Crisis communication (Helma Ohlendorf); Export market biogas - chances and risks for the entrance into European markets (Frank Hofmann); Non-technical measures for the promotion of fermentation gas in Eastern Europe: BIG>East Project (Dominik Rutz); Processing and feeding of biogas (Markus Meyr); Feeding of biogas into regional networks (Claus Bonsen); Influence of the marketability of sources of bioenergy by holistic view of the energy efficiency (Horst Ludley); Aspects of sustainability during the supply of biomass (Bernd Wollwerth); Biomass strategy NRW (Klaus Doeerr); Biogas and NawaRos: entrance for the genetic engineering or nature-compatible and environmentally compatible production (Steffi Ober).

  6. Sluglett Peter with Weber Stefan (éd., Syria and Bilad al-Sham under Ottoman Rule. Essays in honour of Abdul-Karim Rafeq, Leyde, Brill, 2010, 633 p.

    Directory of Open Access Journals (Sweden)

    Catherine Mayeur-Jaouen

    2013-10-01

    Full Text Available Un an avant le printemps arabe de 2011 qui coïncida avec son quatre-vingtième annniversaire, le grand historien syrien Abdulkarim Rafeq s’était vu offrir en 2010 ce beau volume de Mélanges, fruit d’un colloque tenu en 2004 à Damas et à Beyrouth. La cohérence de l’œuvre de Rafeq (l’histoire du Bilād al-Shām ottoman à travers les archives dont il est un connaisseur hors pair comme le caractère bilingue de sa formation (Collège américain à Alep, Université syrienne à Damas, un doctorat à la SOA...

  7. Review: Manuela Boatca, Claudia Neudecker & Stefan Rinke (Eds. (2006. Des Fremden Freund, des Fremden Feind: Fremdverstehen in interdisziplinärer Perspektive [The Stranger's Friend, the Stranger's Enemy: Conceiving Foreignness in an Interdisciplinary Perspective

    Directory of Open Access Journals (Sweden)

    Claudia Brunner

    2007-09-01

    Full Text Available This book comprises the papers of a multidisciplinary workshop on the topic of foreignness/strangeness held at the Catholic University of Eichstätt, Germany, in July 2004. Seven authors try to critically question ways of conceiving foreignness instead of understanding or explaining it in the first place, doing so as a means of changing perspectives. The papers deal with the self-evidence of presumed Otherness and with aspects of constructing Otherness that appear to be strange indeed. A lengthy essay written by two of the editors rounds up the collection. The book is theoretically profound and politically ambitious, since both the workshop and the publication of its proceedings have an important aim: to develop an international and transcultural horizon of values for a common political and social agency based on multi- or interdisciplinary debates. The latter are conceived of as not only dealing with the objects of research, but with its subjects and with the multiple proceedings that lie behind the ways of getting to know the Other by constructing it. URN: urn:nbn:de:0114-fqs0703238

  8. Stellar aberration correction and thermoelastic compensation of Swarm μASC attitude observations: A comment to the Express Letter “Mysterious misalignments between geomagnetic and stellar reference frames seen in CHAMP and Swarm satellite measurements”, by Stefan Maus

    DEFF Research Database (Denmark)

    Herceg, M.; Jørgensen, P. S.; Jørgensen, J. L.

    2017-01-01

    . However, comparison of the Inter Boresight Angle shows a relative attitude variation between the μASC Camera Head Units. These misalignments between Camera Head Units and a geomagnetic reference frame cannot be explained by incorrect aberration correction (as theorized by Maus). Herceg et al. found them...... and clean from any variation caused by thermoelastic effects....

  9. [Dennis Hormuth. Livonia est omnis divisa in partes tres : Studien zu mental mapping der livländischen Chronistik in der Frühen Neuzeit (1558-1710) ] / Stefan Donecker

    Index Scriptorium Estoniae

    Donecker, Stefan, 1977-

    2014-01-01

    Arvustus: Hormuth, Dennis. Livonia est omnis divisa in partes tre : Studien zu mental mapping der livländischen Chronistik in der Frühen Neuzeit (1558-1710). (Quellen und Studien zur Geschichte des östlichen Europa, 79). Stuttgard, 2012

  10. The Concept of Islamic Art: Inherited Discourses and New Approaches’, in Benoît Junod, Georges Khalil, Stefan Weber and Gerhard Wolf, eds, Islamic Art and the Museum, London: Saqi, 2012. Reproduced by permission of the author and publishers

    Directory of Open Access Journals (Sweden)

    Gülru Necipoğlu

    2012-06-01

    Full Text Available The article examines the shift in the field, since the 1970s, from a predominant focus on the early period of Islamic art and architecture in the ‘central zone’ of the Fertile Crescent to a broader chronological and geographical scope. This shift has contributed, among other things, to a change of emphasis from artistic unity to variety, accompanied by an increasing diversification of concepts and approaches including dynastic, regional, media-based, textual, theoretical, critical, and historiographical inquiries. The article seeks to address the unresolved methodological tensions arising from the expanded scope of the field, along with concomitant anxieties over the fragmentation of its traditional ‘universalism’. It begins by outlining the premises of still prevalent approaches inherited from the construction of the field during the late nineteenth and early twentieth centuries, a field rooted in the entangled legacies of Orientalism, nationalism, and dilletantism. The article then reviews the statements of some scholars on the state and future of the field before turning to personal reflections on challenges posed by its expanding horizons and its relationship to the Museum.

  11. Monetary and Fiscal Policy Interactions in the Euro Area

    Science.gov (United States)

    2004-03-01

    Balassa - Samuelson -Effekt, Nr. 3/2002, erschienen in: Stefan Reitz (Hg.): Theoretische und wirtschaftspolitische Aspekte der internatio- nalen Integration...156, 2000, S. 646-660. Friihere Diskussionsbeitriige zur Finanzwissenschaft Josten, Stefan, Crime, Inequality, and Economic Growth. A Classical Argument

  12. A Family Finds Its Way

    Science.gov (United States)

    ... conditions as a family. Photo courtesy of Stefan Radtke, www.stefanradtke.com The Woodruffs deal with Bob's ... be as she matures. Photo courtesy of Stefan Radtke, www.stefanradtke.com Do you talk with her ...

  13. Romantiline filosoofia / Aivar Kull

    Index Scriptorium Estoniae

    Kull, Aivar, 1955-

    2004-01-01

    Arvustus: Zweig, Stefan. Inimkonna tähetunnid : neliteist ajaloolist miniatuuri / tõlkinud Vilma Jürisalu. Tallinn : Eesti Raamat, 2003. Vaata ka: Kull, Aivar. Kulli pilk. - Tartu : Ilmamaa, 2005, lk. 76-77, pealkirjaga "Stefan Zweigi romantiline ajaloofilosoofia"

  14. Einführung

    Directory of Open Access Journals (Sweden)

    Gerhard Dilcher

    2010-01-01

    Full Text Available Das Zustandekommen der hier vorgelegten Beiträge zum Thema »Rechtsgewohnheiten« bedarf einer kurzen Erläuterung. Von dem Buch(1 Martin Pilchs, dessen – nun hier ausgearbeitet vorliegender – Vortrag(2 die ebenfalls in überarbeiteter Form wiedergegebene Diskussion einleitete, ging ein unerwarteter und ungewöhnlicher Anstoß für die Zunft der Rechtshistoriker und Historiker aus. Ein österreichischer Ministerialbeamter mit rechtstheoretischer Schulung, der aber auch Physiker und Mathematiker ist, wendet sich einer normtheoretischen Studie zu. In ihr spielt die mittelalterliche ungelehrte, weitgehend orale Rechtstradition als Forschungsfeld eine wichtige Rolle als Gegenbild zu einem einseitigen modernen Normverständnis. Innerhalb dieser Diskussion setzt sich Pilch intensiv, und von der Seite der Theorie kommend kritisch, mit einer rechtshistorischen Diskussion der letzten Jahrzehnte um den Begriff der Rechtsgewohnheit auseinander; er bezieht aber auch neue Erklärungsmodelle der Mittelalterhistoriker zu den Formen ritueller Konfliktbeilegung in der politischen Führungsschicht von Adel und Königtum (Gerd Althoff, sowie Erklärungsversuche vom Konzept der Ordnungskonfigurationen her (Stefan Weinfurter, Bernd Schneidmüller in seine Überlegungen mit ein. Dem provozierenden Stichwort »Rechtsgewohnheiten« im Titel des Buches von Martin Pilch ist es wohl zu verdanken, dass alle drei angesprochenen Forschungsrichtungen sehr bald den Kontakt mit dem Autor aufnahmen. Von Seiten der Rechtshistoriker führte dies im Januar 2010 zu einer Tagung in Frankfurt im Rahmen der International Max Planck Research School of Comparative Legal History / Internationales Forschungskolleg für vergleichende Rechtsgeschichte. Das Leitungsgremium, die Professoren der Rechtsgeschichte der Universität und des Max-Planck-Instituts, hatte meinen Vorschlag sogleich aufgenommen, die Kollegiaten haben die Tagung sorgfältig vorbereitet. Vor allem gelang es, alle von

  15. Kuidas tõlkida loojaid riigiametnikele ja vastupidi? / Andreas Sepp

    Index Scriptorium Estoniae

    Sepp, Andreas

    2010-01-01

    Oktoobris 2010 toimus Tallinna Ülikooli Balti Filmi- ja Meediakooli korraldatud loengusari "Creative and Cultural Industries Policy in Europe", kus keskenduti Euroopa Liidu loomemajanduse regulatiivpoliitikale. Kursuse viisid läbi õppejõud Bernd Hartmann ja Jan Runge Saksamaalt

  16. Diurnal patterns at an autumn migration ringing site near the Sudan ...

    African Journals Online (AJOL)

    ringing site near the Sudan Red Sea coast. Gerhard Nikolaus, David Pearson and Bernd ... within this small site varied throughout the day according to a regular pattern, and it was noted that different species .... looking for a landing area at first light, and the small green oasis of Khor Arba'at was especially attractive to birds ...

  17. Film "Zakat" o poslednih dnjah Gitlera polutshil "bavarskogo Oskara"

    Index Scriptorium Estoniae

    2005-01-01

    Mängufilm "Allakäik" ("Der Untergang") : produtsent ja stsenarist Bernd Eichinger, võitis kolm Baierimaa filmiauhinda "Baieri Oscar". Auhinnati ka peaosatäitja Bruno Ganzi loodud rollisooritust ja parima režissööritöö eest sai auhinnatud Oliver Hirschbiegel

  18. The use of forests in times of crisis: ecological literacy as a safety net

    Science.gov (United States)

    Alan R. Pierce; Marla R. Emery

    2005-01-01

    In his chapter entitled "Flight into the Forest," zoologist Bernd Heinrich (1984) recounts how he and his family, Polish refugees who fled to Germany at the close of World War II, lived off of fish, game (including mice), nuts, berries and mushrooms in the forests of Hahnheide for five years. For Europeans of Heinrich's generation, memories of reliance...

  19. Lisandusi Eesti homoajaloole

    Index Scriptorium Estoniae

    1999-01-01

    1998. a. lõpul Hamburgis ilmunud Bernd-Ulrich Hergemölleri koostatud saksa homoleksikon "Biographisches Lexikon zur Geschichte von Freundesliebe und mann-männlicher Sexualität im deutschen Sprachraum" toob ära ka artikli Otto Magnus von Stackelbergist (1786-1837)

  20. Best practices guidelines for managing water in bioenergy feedstock production

    Science.gov (United States)

    Daniel G. Neary

    2015-01-01

    In the quest to develop renewable energy sources, woody and agricultural crops are being viewed as an important source of low environmental impact feedstocks for electrical generation and biofuels production (Hall and Scrase 1998, Eriksson et al. 2002, Somerville et al. 2010, Berndes and Smith 2013). In countries like the USA, the bioenergy feedstock potential is...

  1. Mäss põhjusega : kortermaja Silodamil Amsterdamis / Klaske Havik

    Index Scriptorium Estoniae

    Havik, Klaske, 1975-

    2002-01-01

    Büroo MVRDV suurim elamuprojekt. Arhitektid Winy Maas, Jacob van Rijs, Nathalie de Vries, kaasa töötasid Frans de Witte, Willem Timmer, Eline Strijkers, Bernd Felsinger, Duzan Koepel. Viis võistlustöö kaasautorit. Hoone paikneb kai tipus, on ehitatud vette postide peale. Ill.: 7 plaani, 11 vaadet

  2. Kas Tallinn vajab uut brändi? / Andreas Sepp

    Index Scriptorium Estoniae

    Sepp, Andreas

    2010-01-01

    Tallinnas viibinud saksa loomemajanduse õppejõudude Bernd Hartmanni ja Jan Runge sõnul on kultuuripealinna aasta hea võimalus linnakuvandi parandamiseks. Nende arvates võiks Tallinn kultuuripealinna raames anda noortele disaineritele ja filmitegijatele loomingu eksponeerimiseks piisavalt võimalusi ning keskenduda kohaliku kultuurielu parandamisele

  3. The role of glial adenosine receptors in neural resilience and the neurobiology of mood disorders

    NARCIS (Netherlands)

    Calker, D; Biber, K

    2005-01-01

    Adenosine receptors were classified into A(1)- and A(2)-receptors in the laboratory of Bernd Hamprecht more than 25 years ago. Adenosine receptors are instrumental to the neurotrophic effects of glia cells. Both microglia and astrocytes release after stimulation via adenosine receptors factors that

  4. Report on ONR Conference on ’Dolphin Behavior and Cognition: Comparative and Ecological Aspects’, Hubbs-Sea World Research Institute, San Diego, California, 92109, July 6-9, 1983.

    Science.gov (United States)

    1983-11-01

    Brookfield Zoo Brookfield, IL 60513 Robert Buhr Animal communication and cognition; Department of Linguistics neurolinguistics and neuropsychology Brown...Rockefeller University 1230 York Avenue New York, NY 10021 Henry Halff (observer) Personnel and Training Research Program .,,; Code 442 PT Arlington, VA 22212...observer) Physiology and Neurobiology Research Program Code 441 NP e., Office of Naval Research Arlington, VA 22217 Bernd Wursig Cetacean behavior

  5. Oles Have

    DEFF Research Database (Denmark)

    Boris, Stefan Darlan

    2015-01-01

    Landskabsarkitekts Ole Mouritsens Have Tjørnegaard er fotograferet gennem et år af Stefan Darlan Boris. Fotografierne er ledsaget af teksten Vejrhaven.......Landskabsarkitekts Ole Mouritsens Have Tjørnegaard er fotograferet gennem et år af Stefan Darlan Boris. Fotografierne er ledsaget af teksten Vejrhaven....

  6. Informal Institutions and the Weaknesses of Human Behavior

    Science.gov (United States)

    2005-01-01

    Volkswirtschaftslehre "* Braiuninger, Michael, Social Capital and Regional Mobility, Nr. 4/2002. "* Schdfer, Wolf, EU-Erweiterung: Anmerkungen zum Balassa ... Samuelson -Effekt, Nr. 3/2002, erschienen in: Stefan Reitz (Hg.): Theoretische und wirtschaftspolitische Aspekte der internatio- nalen Integration, Duncker...646-660. Friuhere Diskussionsbeitraige zur Finanzwissenschaft "* Josten, Stefan, Crime, Inequality, and Economic Growth. A Classical Argument for

  7. Masserepræsentation

    DEFF Research Database (Denmark)

    Borch, Christian

    2014-01-01

    Anmeldelse af: Stefan Jonsson, Crowds and Democracy: The Idea and Image of the Masses from Revolution to Fascism. New York & London: Columbia University Press, 2013, 321 sider.......Anmeldelse af: Stefan Jonsson, Crowds and Democracy: The Idea and Image of the Masses from Revolution to Fascism. New York & London: Columbia University Press, 2013, 321 sider....

  8. Book Review: Organizations: A Systems Approach

    DEFF Research Database (Denmark)

    Schoeneborn, Dennis

    2016-01-01

    Review of: Stefan Kühl: Organizations. A Systems Approach (trans. P. Schmitz). Farnham: Gower Publishing, 2013. 195 pp. £14.99. ISBN 9781472413413.......Review of: Stefan Kühl: Organizations. A Systems Approach (trans. P. Schmitz). Farnham: Gower Publishing, 2013. 195 pp. £14.99. ISBN 9781472413413....

  9. Multidisciplinary pain management programs.

    OpenAIRE

    Kaiser, Ulrike; Arnold, Bernhard; Pfingsten, Michael; Nagel, Bernd; Lutz, Johannes; Sabatowski, Rainer

    2013-01-01

    Ulrike Kaiser,1 Bernhard Arnold,2 Michael Pfingsten,3 Bernd Nagel,4 Johannes Lutz,5 Rainer Sabatowski1,61Comprehensive Pain Center, University Hospital “Carl Gustav Carus”, Dresden, 2Department of Pain Management, Klinikum Dachau, Dachau, 3Pain Clinic, University Medicine, University of Göttingen, 4Day Care Unit, DRK Pain Center, Mainz, 5Interdisciplinary Pain Center, Zentralklinik Bad Berka, Bad Berka, 6Department of Anesthesiology and Intensive Care, University ...

  10. JPRS Report, Science and Technology, Europe.

    Science.gov (United States)

    1989-06-16

    ESA X-Ray Observatory Described [Stephen L. Harrison, Bernd Schuerenberg; Friedrichshafen DORNIER POST, 1989] 1 SNECMA Automates Turbine Blade...environmental control system. The total value of these orders is over $500 million. The Friedrichshafen Gearwheel Factory, in cooperation with Dowty...electronic installa- tion, and the Friedrichshafen Gearwheel Factory, which has a subcontract for the complete gear box. The total value of this order is

  11. Proceedings of the IDA (Institute for Defense Analyses) Workshop on Formal Specification and Verification of Ada (Trade Name) (2nd) Held in Alexandria, Virginia on July 23-25, 1985.

    Science.gov (United States)

    1985-11-01

    2% -N X Mailing Directory U Bernard Abrams ABRAMS@USC-ECLB Grumman Aerospace Corporation Mail Station 001-31T Bethpage, NY 11714 (516) 575-9487 Omar...Aerospace & Comm. Corp. 10440 State Highway 83 Colorado Springs, Colorado 80908 Mark R. Cornwell CORNWELL @NRL-CSS Code 7590 Naval Research Lab Washington...5) Role of the Formal Definition of Ada Bernard Lang, INRIA, no date, 10 pages [6) The Users of a Formal Definition for Ada Bernd Krieg-Brdckner 2

  12. Saalid, käigud, tunnelid, Berliin / Erkki Luuk

    Index Scriptorium Estoniae

    Luuk, Erkki, 1971-

    2005-01-01

    Berliini moodsa kunsti muuseumist Hamburger Bahnhofist. Joseph Beuysi ja Anselm Kieferi töödest, kuni 23. IV 2006 avatud minimalismiteemalisest näitusest "Fast Nichts" (On Kawara (sünd. 1933) ja Joseph Kosuthi tööd, F. C. Flicki kogu). Kuni 8. I 2006 avatud Bernd (sünd. 1931) ja Hilla (sünd. 1934) Becheri must-valgete fotode näitusest "Industriaalehitiste tüpoloogiad" jm.

  13. Calcium Imaging of Neuronal Circuits In Vivo Using a Circuit-Tracing Pseudorabies Virus

    OpenAIRE

    sprotocols

    2014-01-01

    Authors: Andrea E. Granstedt, Bernd Kuhn, Samuel S.-H. Wang and Lynn W. Enquist Corresponding author ([]()). ### INTRODUCTION Pseudorabies virus (PRV) is a neuroinvasive virus of the herpes family that has a broad host range but does not infect higher-order primates. PRV characteristically travels along chains of synaptically connected neurons and has been used extensively for elucidating neural circuits in the peripheral and central ner...

  14. PREFACE: International Conference on Computing in High Energy and Nuclear Physics (CHEP 2010)

    Science.gov (United States)

    Lin, Simon C.; Shen, Stella; Neufeld, Niko; Gutsche, Oliver; Cattaneo, Marco; Fisk, Ian; Panzer-Steindel, Bernd; Di Meglio, Alberto; Lokajicek, Milos

    2011-12-01

    , as well as two banquets held at the Grand Hotel and Grand Formosa Regent in Taipei. The next CHEP conference will be held in New York, the United States on 21-25 May 2012. We would like to thank the National Science Council of Taiwan, the EU ACEOLE project, commercial sponsors, and the International Advisory Committee and the Programme Committee members for all their support and help. Special thanks to the Programme Committee members for their careful choice of conference contributions and enormous effort in reviewing and editing about 340 post conference proceedings papers. Simon C Lin CHEP 2010 Conference Chair and Proceedings Editor Taipei, Taiwan November 2011 Track Editors/ Programme Committee Chair Simon C Lin, Academia Sinica, Taiwan Online Computing Track Y H Chang, National Central University, Taiwan Harry Cheung, Fermilab, USA Niko Neufeld, CERN, Switzerland Event Processing Track Fabio Cossutti, INFN Trieste, Italy Oliver Gutsche, Fermilab, USA Ryosuke Itoh, KEK, Japan Software Engineering, Data Stores, and Databases Track Marco Cattaneo, CERN, Switzerland Gang Chen, Chinese Academy of Sciences, China Stefan Roiser, CERN, Switzerland Distributed Processing and Analysis Track Kai-Feng Chen, National Taiwan University, Taiwan Ulrik Egede, Imperial College London, UK Ian Fisk, Fermilab, USA Fons Rademakers, CERN, Switzerland Torre Wenaus, BNL, USA Computing Fabrics and Networking Technologies Track Harvey Newman, Caltech, USA Bernd Panzer-Steindel, CERN, Switzerland Antonio Wong, BNL, USA Ian Fisk, Fermilab, USA Niko Neufeld, CERN, Switzerland Grid and Cloud Middleware Track Alberto Di Meglio, CERN, Switzerland Markus Schulz, CERN, Switzerland Collaborative Tools Track Joao Correia Fernandes, CERN, Switzerland Philippe Galvez, Caltech, USA Milos Lokajicek, FZU Prague, Czech Republic International Advisory Committee Chair: Simon C. Lin , Academia Sinica, Taiwan Members: Mohammad Al-Turany , FAIR, Germany Sunanda Banerjee, Fermilab, USA Dario Barberis, CERN

  15. Roostes Ruhrpoti tööstusmaastikel võrsub kultuur / Mari Peegel

    Index Scriptorium Estoniae

    Peegel, Mari, 1978-

    2007-01-01

    Arhitektide Fritz Schuppi ja Martin Kremeri projekteeritud endise söekaevanduse ruumides asuvast etenduskunstide ja koreograafia keskusest PACT Zollvereinist Essenis. Ka jutuajamisest keskuse kunstilise juhi, tantsija ja koreograafi Stefan Hilterhausiga

  16. Inimesed meie ümber / Anne-Ly Sova

    Index Scriptorium Estoniae

    Sova, Anne-Ly, 1976-

    2007-01-01

    Münchenis toimunud teatrifestivali "Spielart" mõnest etendusest: Stefan Kaegi ja Lola Ariase dokumentaallavastus "SOKO Sao Paulo", Tim Etchellsi ja Belgia trupi Victoria "That Night Follows Day", Alvis Hermanise "Väter"

  17. Racism, empire and sociology

    OpenAIRE

    Smith, Andrew

    2017-01-01

    Reviews of Gurminder K Bhambra, Connected Sociologies; Peo Hansen and Stefan Jonsson, Eurafrica: The Untold History of European Integration and Colonialism; Wulf D. Hund, Alana Lentin (eds) Racism and Sociology

  18. Börs nutab taga Eesti Energia loobumist / Jaana Pikalev ; kommenteerinud Jürgen Ligi, Sandor Liive

    Index Scriptorium Estoniae

    Pikalev, Jaana

    2010-01-01

    SEB privaatpanganduse osakonna strateeg Peeter Koppel, LHV Panga analüütik Sten Pisang, investor Stefan Andresson avaldavad arvamust seoses otsusega Eesti Energia veel mitte börsile viia. Majandus- ja kommunikatsiooniminister Juhan Partsi arvamus

  19. HIV/AIDS: A Nontraditional Security Threat for AFRICOM

    National Research Council Canada - National Science Library

    Letcher, Kenneth W

    2008-01-01

    .... Africa Command must navigate. The study will draw on research of the HIV/AIDS epidemic and its effect on the effectiveness of the militaries of southern Africa, leaning heavily on the research of Stefan Elbe and a small cadre...

  20. Samaja bolshaja stroiploshtshadka v Estonii / Konstantin Morenko

    Index Scriptorium Estoniae

    Morenko, Konstantin

    2004-01-01

    Tallinna linnavalitsus korraldas ümarlaua linna rannaalade hetkeseisu ja arenguvõimaluste hindamiseks, mille töös osalesid ka Euroopa tuntud linnaplaneerimise konsultandid. Arvamust avaldavad Peep Aaviksoo, Lutz Schleich, Giorgio Risicaris ja Stefan Boltz

  1. Zwischenberichterstattung nach Börsenrecht, DRS, IAS und US-GAAP

    OpenAIRE

    Alvarez von Zerboni di Sposetti, Manuel

    2003-01-01

    Zwischenberichterstattung nach Börsenrecht, DRS, IAS und US-GAAP / von Manuel Alvarez und Stefan Wotschofsky. - 2., neubearb. und erw. Aufl. - Berlin : Erich Schmidt, 2003. - XX, 219 S. [1. Aufl. 2000

  2. Raamat ainsana maailmas Tallinnas säilinud 16. sajandi käsikirjast / Vello Lumiste

    Index Scriptorium Estoniae

    Lumiste, Vello

    2008-01-01

    Rets. rmt.: Die Arithmetik-Vorlesung des Georg Joachim Rheticus Wittenberg 1536 : eine kommentierte Edition der Handschrift X-278 (8) der Estnischen Akademischen Bibliothek / herausgegeben von Stefan Deschauer. Augsburg, 2003. Lisa: Valitud osi käsikirjast

  3. Surveillance of irradiation embrittlement of nuclear reactor pressure vessels

    International Nuclear Information System (INIS)

    Najzer, M.

    1982-01-01

    Surveillance of irradiation embrittlement of nuclear reactor pressure vessels is briefly discussed. The experimental techniques and computer programs available for this work at the J. Stefan Institute are described. (author)

  4. Naiste maailm / Katrin Rajasaare

    Index Scriptorium Estoniae

    Rajasaare, Katrin

    2001-01-01

    Pimedate Ööde V filmifestivalil näidatavast kolmest mängufilmist : Stefan Jägeri "Sünnipäev", Saksamaa 2001; Catherine Corsini "Proov", Prantsusmaa 2001; Rakhsan Bani Etemad "Linna kesta all", Iraan 2001

  5. 57. Baltisches Historikertreffen : vom 5. bis 6. Juni 2004 in Göttingen

    Index Scriptorium Estoniae

    2004-01-01

    57. balti ajaloolaste kohtumisel 5.-6. juunini 2004 esinesid ettekannetega Erki Tammiksaar, Tiit Rosenberg, Olaf Mertelsmann, Klaus Neitmann, Matthias Thumsen, Ilgvars Misans, Henrik Bolte, Thomas Brück, Juhan Kreem, Dieter Heckmann, Stefan Hartmann. Ettekannete kokkuvõtted

  6. Bulgaaria maanteenomaadid Tallinna tänavatel. Teater / Andres Keil

    Index Scriptorium Estoniae

    Keil, Andres, 1974-

    2008-01-01

    Märtsis kaubaveoautol toimuvatest etendustest "Cargo Sofia-Tallinn". Esitavad bulgaaria treilerijuhid Ventzislav Borissov ja Nedjalko Nedjalkov. Teose autorid on Stefan Kaegi ja Jörg Karrenbauer. Lavastus on sissejuhatuseks suvisele teatrifestivalile Baltoscandal

  7. Tallinna jõuab teater kaubaveoautos

    Index Scriptorium Estoniae

    2008-01-01

    Märtsis kaubaveoautol toimuvatest etendustest "Cargo Sofia-Tallinn". Esitavad bulgaaria treilerijuhid Ventzislav Borissov ja Nedjalko Nedjalkov. Teose autorid on Stefan Kaegi ja Jörg Karrenbauer. Lavastus on sissejuhatuseks suvisele teatrifestivalile Baltoscandal

  8. Festivali budushtshego leta / Eteri Kekelidze

    Index Scriptorium Estoniae

    Kekelidze, Eteri, 1944-

    2008-01-01

    27. märtsil algavast 10. Baltoscandali teatrifestivalist Rakveres ja festivali raames toimuud esimesest etendusest "Cargo Sofia-Tallinn" (teose idee ja lavastuse autorid Stefan Kaegi ja Jörg Karrenbauer

  9. Pramana – Journal of Physics | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Author Affiliations. Andrew Das Arulsamy1 2. School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia; Jožef Stefan Institute, Jamova Cesta 39, SI-1000 Ljubljana, Slovenia ...

  10. "Vana hea aeg" baltisaksa mälestusteraamatus / Ahti Saares

    Index Scriptorium Estoniae

    Saares, Ahti

    2000-01-01

    Baltisakslastest memuariste iseloomustab romantilis-patriootiline suhtumine kodumaasse ja sellest lähtuv kultuuritoojalik, kõrgemat missiooni täitev hoiak. Võrdlus Stefan Zweigi, Sven Danelli ja Kaljo Villako mälestusteraamatutega

  11. Monitoring White-backed Vultures Gyps africanus in the North West ...

    African Journals Online (AJOL)

    Campbell Murn

    Stellaland), South Africa. Dirk, Karen and Stefan van Stuyvenberg. Stellaland Raptor Project. e-mail: stuyvies@telkomsa.net. Introduction. We became involved with the ringing of birds in 2002 and started to ring raptors actively since 2003.

  12. The happy Bulgarian family

    CERN Multimedia

    2000-01-01

    From left to right, last row to first row: Ilka Antcheva, Georgi Antchev, Dimitri Borilkov, Ivana Hristova, Petiu Petev, Peicho Petkov, Borislav Pavlov, Peter Hristov, Mihail Tchijov, Stefan Piperov, Ekaterina Ivanova, Dimitar Kolev, Roumen Tzenov.

  13. Hollandi paviljon Hannoveri maailmanäitusel EXPO 2000 : Uus Loodus = Dutch Pavilion at EXPO 2000 in Hannover : New Nature / Winy Maas, Jacob van Rijs, Nathalie de Vries

    Index Scriptorium Estoniae

    Maas, Winy

    2000-01-01

    Hollandi paviljon - näide looduse ja tehnoloogia segunemisest. Projekteerija: MVRDV. Arhitektid Winy Maas, Jacob van Rijs, Nathalie de Vries; kaasa töötasid Stefan Witteman, Jaap van Dijk, Chrisoph Schindler, Kristina Adsersen, Rüdiger Kreiselmayer

  14. Symbolic dynamics and description of complexity

    International Nuclear Information System (INIS)

    Hao Bailin.

    1992-10-01

    Symbolic dynamics provides a general framework to describe complexity of dynamical behaviour. After a discussion of the state of the filed special emphasis will be made on the role of transfer matrix (the Stefan matrix) both in deriving the grammar from known symbolic dynamics and in extracting the rules from experimental data. The block structure of the Stefan matrix may serve as another indicator of complexity of the associated dynamics. (author). 33 refs, 6 figs

  15. Conditioning of uranium-containing technological radioactive waste

    International Nuclear Information System (INIS)

    Smodis, B.; Tavcar, G.; Stepisnik, M.; Pucelj, B.

    2006-01-01

    Conditioning of mostly liquid uranium containing technological radioactive waste emerging from the past research activities at the Jozef Stefan Institute is described. The waste was first thoroughly characterised, then the radionuclides present solidified by appropriate chemical treatment, and the final product separated and prepared for storage in compliance with the legislation. The activities were carried out within the recently renewed Hot Cells Facility of the Jozef Stefan Institute and the overall process resulted in substantial volume reduction of the waste initially present. (author)

  16. The Ukrainian Crisis and European Security: Implications for the United States and U.S. Army

    Science.gov (United States)

    2015-01-01

    14 Chris Giles and Stefan Wagstyl, “IMF Warns of Third Eurozone Recession Since Finan- cial Crisis,” Financial Times, October 8, 2014. 15 Ulrich...Jones, and Kathrin Hille, “Russian Air Incursions Rattle Baltic States,” Financial Times, September 25, 2014. 25 Andrew Higgins , “Tensions Surge in...Opening of the Munich Security Conference, January 31, 2014. Giles, Chris , and Stefan Wagstyl, “IMF Warns of Third Eurozone Recession Since Financial

  17. [Eesti Kunstiakadeemia uue hoone rahvusvaheline arhitektuurivõistlus] : EKA maja

    Index Scriptorium Estoniae

    2008-01-01

    Žürii hääletustulemused ja hinnangud. I preemia - "Art Plaza", taani arhitektid Uffe Leth Laursen, Tue Hesselberg Foged, Karsten Gori, Sinus Lynge, Greta Tedje, Simon Sorensen, Lawrence Aeberhard, Lyndal Brown, Morgan Jacobsen (AB Sea + Effekt). II - "TLN 247", Hollandi AB NAT Architecten bv, M. van Zijl, V. van der Klei, F. A. van Manen, B. de Graaf, T. M. van Dijkhuizen, S. van der Meer, D. Awe, N. Limburg, J. Kuilman. III - "Arts Factory", Portugali AB Neralp-Arquitectura Engenharia e Construcoes Lda, Paulo Sergio Goncalves Teixeira de Sousa. Ergutuspreemia - "Publicsection", Hollandi AB BOARD, Bernd Upmeyer, kaastöö: Claudia Hess ja "Sashimi", jaapani arhitekt Francois Blanciak

  18. Multidisciplinary pain management programs

    Directory of Open Access Journals (Sweden)

    Kaiser U

    2013-05-01

    Full Text Available Ulrike Kaiser,1 Bernhard Arnold,2 Michael Pfingsten,3 Bernd Nagel,4 Johannes Lutz,5 Rainer Sabatowski1,61Comprehensive Pain Center, University Hospital “Carl Gustav Carus”, Dresden, 2Department of Pain Management, Klinikum Dachau, Dachau, 3Pain Clinic, University Medicine, University of Göttingen, 4Day Care Unit, DRK Pain Center, Mainz, 5Interdisciplinary Pain Center, Zentralklinik Bad Berka, Bad Berka, 6Department of Anesthesiology and Intensive Care, University Hospital “Carl Gustav Carus”, Dresden, Germany

  19. Eesti Kunstiakadeemia hoonest, pärast tormi / Urmas Oja

    Index Scriptorium Estoniae

    Oja, Urmas, 1981-2012

    2008-01-01

    Eesti Kunstiakadeemia uue õppehoone arhitektuurikonkursist, võidutööst, mille lihtsus, elegantsus ja lai arusaadavus peaksid autori arvates tagama maja valmimise. Žürii koosseis. Premeeritud tööd: I koht - "Art Plaza", autorid Tue Hesselberg Foged, Uffe Leth Laursen, Karsten Gori, Sinus Lynge, SEA + Effekt (Taani), II - "TLN 247", NAT Architecten bv (Holland), III - "Arts Factory", autor Paulo Sergio Goncalves Teixeira de Sousa, NERALP (Portugal), ergutuspreemiad - "Publicsection", autor Bernd Upmeyer, Board (Holland) ja "Sashimi", autor Francois Blanciak (Jaapan)

  20. Heating Parameter Estimation Using Coaxial Thermocouple Gages in Wind Tunnel Test Articles.

    Science.gov (United States)

    1984-12-01

    Attack a Emissivity G Parameter Vector Pn Measurement Vector at nth Time Point p Density 0 Stefan-Boltzmann Constant 6 Transition Matrix APc Scaling...for. The radiation is modeled using the Stefan-Boltzmann Law, q = 60(U 4 - U, 4 ) (A-9) where 8 radiative emissivity a Stefan-Bol tzmann constant U...w00 I- 000 0 0111c :0 i zZ Z-4lwr I- E . - t J K - IL HHO "W 6i 0WZWZWO&000OW *0 . 0 - .- - -4 4 1"- 1 Lii w LiiU Li LI Li Lij Liw w ~ o 0 0wm ~wW6~w d

  1. Lattice Boltzmann model for melting with natural convection

    International Nuclear Information System (INIS)

    Huber, Christian; Parmigiani, Andrea; Chopard, Bastien; Manga, Michael; Bachmann, Olivier

    2008-01-01

    We develop a lattice Boltzmann method to couple thermal convection and pure-substance melting. The transition from conduction-dominated heat transfer to fully-developed convection is analyzed and scaling laws and previous numerical results are reproduced by our numerical method. We also investigate the limit in which thermal inertia (high Stefan number) cannot be neglected. We use our results to extend the scaling relations obtained at low Stefan number and establish the correlation between the melting front propagation and the Stefan number for fully-developed convection. We conclude by showing that the model presented here is particularly well-suited to study convection melting in geometrically complex media with many applications in geosciences

  2. How neutrons and neutrinos translate into crotchets and quavers

    CERN Multimedia

    Joannah Caborn Wengler

    2012-01-01

    What unites The Strokes, Gilbert and Sullivan, Brian Eno and Alpine Kat? All of them have in some way been musically connected with CERN. German composer of electronic music, Bernd Kistenmacher, is the latest in the long list of musicians to have been inspired by CERN.   There seems to be a natural affinity between music and science. How else can it be that CERN has inspired so many different musicians to be creative? From amateurs composing in their bedrooms to professional musicians, from rock stars like Incubus to classical composers like Philip Glass, CERN’s huge-scale science and technology researching the tiniest of particles have again and again stirred artists into creative action. Electromusician Bernd Kistenmacher from Berlin, Germany is no exception. In his case, his interest in CERN goes back to a wider philosophical question: “Where do we come from?” Having composed two albums looking at the origins of the Universe in astronomy and in the depths of ...

  3. One-dimensional diffusion model in an Inhomogeneous region

    CSIR Research Space (South Africa)

    Fedotov, I

    2006-01-01

    Full Text Available ) of these atoms. The enthalpy of formation of free atoms, ∆H, can vary between 50 and 300 kJ.mol-1. The ballast is heated by radiation from the walls of the atomizer, and its temperature, Tb(t), is given by the Stefan-Boltzmann equation [4...]: ( )ddt T t E c S V T t T tb b b b b b w b( ) ( ) ( )= −σ ρ 4 4 (6) where σ is the Stefan-Boltzmann constant, Eb is the emissivity of the ballast material, cb is the heat capacity of ballast material, ρb...

  4. Annäherung Approaching

    Directory of Open Access Journals (Sweden)

    Carola Hilmes

    2007-03-01

    Full Text Available Das von Stefan Moses zusammengestellte „Bilderbuch“ zeigt Fotos von Ilse Aichinger. Sie selbst kommt durch eine Reihe von Geschichten und Gedichten zu Wort. In diesen intimen Dialog werden auch die Leser/-innen einbezogen. Das ermöglicht Annäherung.This “Picture Book”, compiled by Stefan Moses, displays photographs of Ilse Aichinger. She is also given voice through a series of stories and poems. The reader is also drawn into this intimate dialogue, thus making it possible for image, text, and reader to converge.

  5. On portraits in Ravanica

    Directory of Open Access Journals (Sweden)

    Starodubcev Tatjana

    2012-01-01

    Full Text Available This research examines a badly washed-out portrait composition of Prince Lazar, Princess Milica and their sons, Stefan and Vuk, in the Ravanica church. The opinion is that it was not painted later, over the original layer of the frescoes, but that it was made simultaneously with the other wall paintings of the lowest zones of the church. Considering the age of Stefan represented in the portrait composition, it is assumed that the decoration of the church was completed around 1385. [Projekat Ministarstva nauke Republike Srbije, br. 177036: Srpska srednjovekovna umetnosti njen evropski kontekst

  6. [Jesuits Chemists of Hapsburg Monarchy].

    Science.gov (United States)

    Južnič, Stanislav

    2016-01-01

    The achievements of the Jesuits from the Austrian and Bohemian provinces, who have published books on chemistry are focused. Their links with the area of today's Slovenia are particularly exposed. The guidelines which have enabled prompt victories of the ideas about the structure of matter of Jesuit Ru|er Bokovi are indicated. Inconceivable fast spread of Bošković's adherents in the Hapsburg monarchy is compared with a similar rapid introduction of the kinetic theories of atoms of Slovene Jožef Stefan and Ludwig Boltzmann in the same geographical area. Boltzmann was not only Stefan's best student, but he also married a half Slovenian maid.

  7. Public opinion about nuclear energy. Year 2005 poll

    International Nuclear Information System (INIS)

    Istenic, R.; Jencic, I.

    2005-01-01

    Public information is one of the important permanent activities of the Nuclear Training Centre Milan Copic at Jozef Stefan Institute in Ljubljana. It is focused on youngsters and about one half of every generation of schoolchildren in Slovenia is informed on nuclear energy. Every year since 1993 we poll youngsters using the same basic set of questions. For comparison we also polled professionals (our colleagues at the Jozef Stefan Institute) using the same questionnaire. Opinion of youngsters about nuclear energy in Slovenia can be considered favourable now (71 %), but the trend is negative. The support is dropping from initial 83% for two consecutive years. Opposition to NPP Krsko operation remains low. (author)

  8. Program 6 Technical Interchange Meeting Proceedings

    Science.gov (United States)

    1992-10-01

    Buteau PRC (703)556-1355 Gary R. Dolson PRC (703) 5561859 David J. Gray Sterling (315)336-0500 Noreen S. Heyda Harris (407)984-6384 Jay Jesse GTE (719)570...Reed Sterling John Sautter Sterling (315)336-0500 Kevin Sculley PRC (402)291-5533 Stefan Shrier MRJ (703)934-9249 Peter Soliz Orion (505)262-2260...4730 Howard A. Melching GTE (719)570-8898 Noreen S. Heyda Harris (407)984-6384 Jonathan H. Reed Harris (407)984-6008 Stefan Shrier MRJ (703) 934-9249

  9. Support for the Annual Meeting (30th) of the Cognitive Science Society

    Science.gov (United States)

    2008-10-01

    2006) Contents Zygmunt Pizlo (2006) Editor’s Introduction Nicholas R. Burns. Michael I). Lee. and Douglas Viekers (2006) Are Individual Differences...Zheng Li, VII I laxhimiisa. and \\\\ alter G. Kropatsch (2006) Traveling Salesman Problem: A Foveating Pyramid Model Volume 1 Issue 2 (2007) Contents ...Backward Counterfactuals Morteza Dehghani, Rumen Iliev, Stefan Kaufmann 1169 Concepts and Categories Thursday, July 24,2008

  10. Interview: Sued-Chemie innovates to maintain its leadership; Interview Sued-Chemie: innover pour conserver son leadership

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2000-01-01

    The Sued-Chemie group, the head office of which is based in Munich, is one of the world's leading producers of catalysts for the 'syngas' gas chemistry, the refining and the petrochemical industry. Questioned by Info Chimie Magazine, Stefan Brejc, the Product Manager for 'syngas' catalysts, reviews the products in the range. (authors)

  11. Neli korda restoranis / Pekka Toivanen

    Index Scriptorium Estoniae

    Toivanen, Pekka

    2004-01-01

    Kultuurirestoran "Hima ja Sali" (Talberginkatu 1 C 10), mille sisustuse ja kinnise mööbli on kujundanud Kari Lappalainen. Telekokk Jyrki Sukula restoran "Via" (Ludviginkatu 8-10), mille sisustuse on kujundanud Jani Koivula ja Mikael Mantila. Restoran "Mother" (Eerikinkatul) Stefan Lindforsi kujunduses ning Antti Rouhunkoski ja Sami Sorvali kaasajastatud kujunduses. Büroo Valvomo kujundatud "Wrong Nuudle Bar". 13 ill

  12. Bagatellid : maailm / Nele-Eva Steinfeld, Harry Liivrand, Ivo Heinloo

    Index Scriptorium Estoniae

    Steinfeld, Nele-Eva

    2010-01-01

    Uudiseid maailmast: Helilooja Jennifer Higdon pälvis Pulitzeri preemia. Fabio Luisist sai Metropolitan Opera esimene külalisdirigent. "Operalia" võitjad Sonya Yoncheva ja Stefan Pop. Lahkus metsosopran Giulietta Simionato. Kaija Saariaho uus ooper "Emilie" Amsterdamis. Hollandi maineka jazziauhinna noppis Anton Goudsmit. Herbie Hancock tähisats juubelit. Jagati reggae- ja maailmamuusika auhindu. Ilmus Stevie Wonderi biograafia

  13. Characterization of thin films and surfaces by ion-beam analytical techniques

    International Nuclear Information System (INIS)

    Pelicon, P.; Budnar, M.; Zorko, B.; Razpet, A.

    1999-01-01

    The optimization of Rutherford Backscattering Spectroscopy (RBS) and Elastic Recoil Detection Analysis (ERDA) at the tandetron facility of J. Stefan Inst.e is reported. The most recent applications of these techniques for the analysis of thin films and surfaces are presented. The construction of the isotope - resolved Time-Of-Flight ERDA telescope for depth profiling of light elements is reviewed.(author)

  14. Hämmastavad esikteosed / Aita Kivi

    Index Scriptorium Estoniae

    Kivi, Aita, 1954-

    2002-01-01

    Sisu : Andrew Miller. Salakaval valu; Helen Dewitt. Viimane samurai; Michel Faber. Naha all; Ana̐s Nin. Venuse delta; Eeva Park. Vaba langemine; Henri Troyat. Kohutavad keisrinnad; 11. september : terrorirünnaku tagamaad : / [koost. Stefan Aust, Cordt Schnibben... jt.]; Deepak Chopra. Täiuslik tervis; Charlie Jones. Elu on võrratu; Matt Ridley, Matt. Vooruse lätted

  15. Finding Truth in "Lies": Nietzsche's Perspectivism and Its Relation to Education

    Science.gov (United States)

    Jonas, Mark E.; Nakazawa, Yoshiaki M.

    2008-01-01

    In his 2001 article "Teaching to Lie and Obey: Nietzsche on Education", Stefan Ramaekers defends Nietzsche's concept of perspectivism against the charge that it is relativistic. He argues that perspectivism is not relativistic because it denies the dichotomy between the "true" world and the "seeming" world, a dichotomy central to claims to…

  16. Democracy and Education in the Twenty-First Century: Deweyan Pragmatism and the Question of Racism

    Science.gov (United States)

    Neubert, Stefan

    2010-01-01

    Why is John Dewey still such an important philosopher today? Writing from the perspective of the Cologne Program of Interactive Constructivism, Stefan Neubert tries in what follows to give one possible answer to this question. Neubert notes that Cologne constructivism considers Dewey in many respects as one of the most important predecessors of…

  17. Bulletin of Materials Science | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Home; Journals; Bulletin of Materials Science; Volume 39; Issue 3. Structural investigation of V 2 O 5 –P 2 O 5 –K 2 O glass system with antibacterial potential. N S VEDEANU I B COZAR R STANESCU R STEFAN D VODNAR O COZAR. Volume 39 Issue 3 June 2016 pp 697-702 ...

  18. Tartu ülikool nimetas viis uut audoktorit

    Index Scriptorium Estoniae

    2016-01-01

    Rahvusülikooli 97. aastapäeval pälvisid audoktori nimetuse prof-d Stefan Schreiner (usuteadus), Eberhard Klaus Wolfgang Winkler (keeleteadus), Christian Tomuschat (õigusteadus), Kauko K. Mäkinen (hambaarstiteadus), Markku Leskelä (loodus- ja täppisteadused)

  19. South African Journal of Chemistry - Vol 55 (2002)

    African Journals Online (AJOL)

    On-line Determination of Hydrochloric Acid in Process Effluent Streams by Potentiometric Sequential Injection Acid-Base Titration · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. JF Van Staden, MG Mashamba, RI Stefan ...

  20. Assessment: Monitoring & Evaluation in a Stabilisation Context

    Science.gov (United States)

    2010-09-15

    http://www.oecd.org/dataoecd/23/27/35281194.pdf b. SIDA (2004), The Logical Framework Approach. A summary of the theory behind the LFA method...en_21571361_34047972_39774574 _1_1_1_1,00.pdf 3. SIDA (2004), Stefan Molund and Göran Schill, Looking Back, Moving Forward, Sida Evaluation Manual. Available at

  1. Teisel pool fotot : üleval 70 tööd / Ragne Nukk

    Index Scriptorium Estoniae

    Nukk, Ragne, 1984-

    2011-01-01

    Rahvusvaheline fotonäitus "Teisele poole" Kumu Kunstimuuseumis 8. jaanuarini 2012, kuraator Adam Budak. Eksponeeritakse kollaaže, fotodest valmistatud skulptuure, videosid, fotosid, installatsioone. Lühidalt portugali kunstniku Helena Almeida, sakslase Stefan Burgeri, korea kunstniku Sunah Choi, ameeriklase Marlo Pascuali töödest. Näitus toimub Tallinna fotokuu raames

  2. Adolfo Bartoli and the problem of radiant heat

    DEFF Research Database (Denmark)

    Kragh, Helge; Carazza, Bruno

    1989-01-01

    development of black-body theory and light pressure research. This influence was mainly due to Boltzmann, who came to the Stefan-Boltzmann radiation law via a reworking of Bartoli's thought experiment. However, contrary to what is usually assumed, Bartoli was himself reluctant to admit the existence of light...

  3. Losing Traction and the Art of Slip-Sliding Away: Or, Getting over Education for Sustainable Development

    Science.gov (United States)

    Jickling, Bob

    2016-01-01

    This response problematizes Stefan Bengtsson's (2016) defense of education for sustainable development. He argues that sustainable development and education for sustainable development are not globalizing and hegemonic discourses, as some have claimed, and uses case-study analysis of Vietnamese policy documents to support his claims. He observes…

  4. Ruling Relationships in Sustainable Development and Education for Sustainable Development

    Science.gov (United States)

    Berryman, Tom; Sauvé, Lucie

    2016-01-01

    It is from historical perspectives on more than 40 years of environment related education theories, practices, and policies that we revisit what might otherwise become a tired conversation about environmental education and sustainable development. Our contemporary critical analysis of Stefan Bengtsson's research about policy making leads us to…

  5. Karikakramäng eesriide taga : Tšehhi uue laine eriprogramm PÖFFil / Tristan Priimägi

    Index Scriptorium Estoniae

    Priimägi, Tristan, 1976-

    2010-01-01

    14. Pimedate Ööde filmifestivali üks märksõnu on "uus laine". Näha saab Tšehhoslovakkias 1960ndatel valminud mängufilme (rež.-d Milos Forman, Stefan Uher, Jan Nemec, Vojtech Jasny, Eduard Grecner, Dusan Hanak, Juraj Jakubisko, Elo Havetta, Vera Chytilova ja Ivan Passer)

  6. Kalamaja jalakäijate silla eskiislahendus = A draft project for a pedestrian bridge in Kalamaja / Irina Raud

    Index Scriptorium Estoniae

    Raud, Irina, 1945-

    2008-01-01

    Tallinna Tehnikakõrgkooli Arhitektuuri õppetooli õpitoa "Intelligentsed konstruktsioonid" raames toimunud professor Irina Raua ja professor Stefan Polonyi (Saksamaa) näidisloengu ajal arhitekti ja inseneri koostööna valminud Tallinna Kalamajja kavandatava jalakäijate silla eskiislahendusest

  7. Multicomponent diffusivities from the free volume theory

    NARCIS (Netherlands)

    Wesselingh, J.A; Bollen, A.M

    In this paper the free volume theory of diffusion is extended to multicomponent mixtures. The free volume is taken to be accessible for any component according to its surface. fraction. The resulting equations predict multicomponent (Maxwell-Stefan) diffusivities in simple liquid mixtures from pure

  8. [Herzog...] / Jacek Wijaczka

    Index Scriptorium Estoniae

    Wijaczka, Jacek

    2003-01-01

    Rets. rmt.: Herzog Albrecht von Preussen und Livland (1540-1551). Regesten aus dem Herzoglichen Briefarchiv und den Ostpreussischen Folianteen. Köln-Weimar-Wien : Stefan Hartmann Böhlau-Verlag, 2002 (Veröffentlichungen aus dem Archiven Preussischer Kulturbesitz, Bd. 54)

  9. Directory of Czechoslovak Officials; a Reference Aid

    Science.gov (United States)

    1988-07-14

    Jaroslav; KSS Barilla , Jan KSS Horvath, Stefan: A’SS Bartak, Stel’an KSS Horvathova, Marta: KSC Barton, Jaroslav Hricko, Peter: KSS Benyo, Matus: KSS...61 Bilek. Jin 78 Banarova. Eva is Bilek, /denck 4’) Barak, Ladislav 71 Biro~s, Branislav 10.40.41, Barilla , Jan .11 Bisko. fir,, Harlot’s, Paulina 6

  10. Köök / Eve Arpo, Bibi Steinberg

    Index Scriptorium Estoniae

    Arpo, Eve

    2009-01-01

    Kaasaegsed köögid, köögitehnika. Nõuandeid köögi planeerimiseks. Peter Distoli disainitud suhkrust köök. Rahvusvahelisel disainivõistlusel Electro Design Lab 2008 eksponeeritud kodumasinad. Esikoha võitis Stefan Buchbergeri disainitud moodulitest koosnev külmik

  11. Tulevik Electroluxi disainivõistluselt / Enn Heinsoo

    Index Scriptorium Estoniae

    Heinsoo, Enn

    2009-01-01

    Võistluse "Design Lab" tööde näitus tuleviku kodumasinatest Arhitektuuri- ja Disainigaleriis 21. märtsini. 2007. aastal võitis konkursi ungarlase Levente Szabo ökopesumasin E-wash, 2008. aastal austerlase Stefan Buchbergeri moodulkülmik Flatshare

  12. Detection of fuel element failures at the gas cooled reactors; Zaznavanje razpok na gorilnih elementih plinsko hlajenega reaktorja

    Energy Technology Data Exchange (ETDEWEB)

    Bremsak, P; Ranzel, S; Ogrin, R; Pisanski, C [Institut Jozef Stefan, Ljubljana (Yugoslavia)

    1964-07-01

    This paper describes the system for measuring the concentration of released Kr and Xe in the cooling gas. The system developed in the Jozef Stefan Institute is efficient and suitable for application The method is based on electrostatic collection of daughter elements from radioactive decay of Xe and Kr.

  13. Tallinna börsi uus lemmik / Armin Karu ; interv. Jaanika Merilo

    Index Scriptorium Estoniae

    Karu, Armin, 1965-

    2006-01-01

    Olympic Entertainment Group'i juht tutvustab ettevõtte börsile viimist, laienemisplaane Kesk- ja Ida-Euroopasse, olukorda kasiinoturul. Graafik: Olympic Entertainment Groupi aktsia kurss 23.-25. okt. 2006. Kommenteerivad Stefan Andersson, Kristjan Lepik, Kristjan Hänni, Tõnno Vähk, Peeter Koppel

  14. Cohesion and coordination effects on transition metal surface energies

    Science.gov (United States)

    Ruvireta, Judit; Vega, Lorena; Viñes, Francesc

    2017-10-01

    Here we explore the accuracy of Stefan equation and broken-bond model semiempirical approaches to obtain surface energies on transition metals. Cohesive factors are accounted for either via the vaporization enthalpies, as proposed in Stefan equation, or via cohesive energies, as employed in the broken-bond model. Coordination effects are considered including the saturation degree, as suggested in Stefan equation, employing Coordination Numbers (CN), or as the ratio of broken bonds, according to the bond-cutting model, considering as well the square root dependency of the bond strength on CN. Further, generalized coordination numbers CN bar are contemplated as well, exploring a total number of 12 semiempirical formulations on the three most densely packed surfaces of 3d, 4d, and 5d Transition Metals (TMs) displaying face-centered cubic (fcc), body-centered cubic (bcc), or hexagonal close-packed (hcp) crystallographic structures. Estimates are compared to available experimental surface energies obtained extrapolated to zero temperature. Results reveal that Stefan formula cohesive and coordination dependencies are only qualitative suited, but unadvised for quantitative discussion, as surface energies are highly overestimated, favoring in addition the stability of under-coordinated surfaces. Broken-bond cohesion and coordination dependencies are a suited basis for quantitative comparison, where square-root dependencies on CN to account for bond weakening are sensibly worse. An analysis using Wulff shaped averaged surface energies suggests the employment of broken-bond model using CN to gain surface energies for TMs, likely applicable to other metals.

  15. Das Minderheitenrecht europäischer Staaten. Teil 2 / Carmen Schmidt

    Index Scriptorium Estoniae

    Schmidt, Carmen, 1956-

    1996-01-01

    Raamatuarvustus: Das Minderheitenrecht europäischer Staaten. Teil 2 / herausgegeben von Jochen Abr. Frowein, Rainer Hofmann, Stefan Oeter ; Max-Planck-Institut für ausländisches öffentliches Recht und Völkerrecht. Berlin [etc.] : Springer-Verlag, 1994

  16. Sur?Surva - the Forgotten God [In Bulgarian

    Directory of Open Access Journals (Sweden)

    G. Simeonova

    2014-12-01

    Full Text Available Тhis paper deals with the neglected god – Sur/Surva. The author considers in full detail this problem, finding an evidence for the statements proposed by a new perusal of Stefan Verkovich’s Veda Slovena.

  17. Ice-­Ocean Thermodynamic Interface and Small-­Scale Issues

    Energy Technology Data Exchange (ETDEWEB)

    Turner, Adrian K. [Los Alamos National Laboratory

    2012-07-02

    This presentation discusses: (1) Stefan condition, (2) lower boundary condition of mushy layers, (3) salt flux to ocean from gravity drainage, (4) distribution of salt flux in the ocean, (5) under ice melt ponds and false bottoms, and (6) basal ablation.

  18. The Olympic Games: Showcases of Internationalism and Modernity in Asia

    Directory of Open Access Journals (Sweden)

    Robin Kietlinski

    2017-09-01

    Full Text Available Stefan Huebner. Pan-Asian Sports and the Emergence of Modern Asia, 1913-1974. Singapore: National University of Singapore Press, 2016. 416 pp. $42 (paper. Jessamyn Abel. The International Minimum: Creativity and Contradiction in Japan's Global Engagement, 1933-1964. Honolulu: University of Hawai‘i Press, 2015. 344 pp. $54 (cloth.

  19. MIQE précis: Practical implementation of minimum standard guidelines for fluorescence-based quantitative real-time PCR experiments

    NARCIS (Netherlands)

    Bustin, S.A.; Beaulieu, J.F.; Huggett, J.; Jaggi, R.; Kibenge, F.S.; Olsvik, P.A.; Penning, L.C.; Toegel, S.

    2010-01-01

    MIQE précis: Practical implementation of minimum standard guidelines for fluorescence-based quantitative real-time PCR experiments Stephen A Bustin1 , Jean-François Beaulieu2 , Jim Huggett3 , Rolf Jaggi4 , Frederick SB Kibenge5 , Pål A Olsvik6 , Louis C Penning7 and Stefan Toegel8 1 Centre for

  20. Greger Anderson & Ursula Geisler: Fruktan, fascination, frändskap [... etc.

    DEFF Research Database (Denmark)

    Fjeldsøe, Michael

    2007-01-01

    review essay: Greger Andersson & Ursula Geisler (eds.), Fruktan, fascination och frändskap. Det svenska musiklivet och nazismen, Malmö, 2006; Henrik Karlsson, Det fruktade märket. Wilhelm Peterson-Berger, antisemitismen och antinazismen, Malmö, 2005; Horst Weber and Stefan Drees (eds.), Quellen z...

  1. Proposals for the heating mechanism of an electron-bombarded body

    International Nuclear Information System (INIS)

    Geller, R.; Yerouchalmi, F.

    1967-01-01

    When a thermally isolated target in vacuum is bombarded by an electron beam the target becomes red. In this paper we try a heuristic explanation indicating how the kinetic power of the beam may be transformed into radiation power controlled by Stefan law. (authors) [fr

  2. A World Where All Worlds Cohabit

    Science.gov (United States)

    Teamey, Kelly; Mandel, Udi

    2016-01-01

    In response to Stefan Bengtsson's search for alternatives to Education for Sustainable Development practices outside the mainstream of the state and its policy formulations, this response outlines how our journey, experiences, and approaches reflect a de-professionalizing encounter with autonomous places of learning emerging from indigenous…

  3. Darshana Jolts

    Indian Academy of Sciences (India)

    Only by the second half of 19th century did it become clear that the difference between ... Boltzmann law, discovered in 1879 by Josef Stefan and in 1884 by Ludwig Boltzmann. ... occur without input from or output to the outside is known as the principle of ... rich chapter of physics, known as the kinetic theory of heat 11.

  4. Arhitektuuriuudised / Karen Jagodin

    Index Scriptorium Estoniae

    Jagodin, Karen, 1982-

    2007-01-01

    Trossidega majale kinnitatud rippuv tuba (autor Stefan Eberstadt); disainikooli hoone Saksamaa tööstuspiirkonnas (arhitektid Kazuyo Sejima ja Ryue Nishizawa); hiidlille kujuline elamu Hollandis (arhitektid Ben Huygen ja Jasper Jägers); Fuji mäe kujuline eramu Jaapanis (arhitekt Yuko Nagayama); AR Arhitektuuriauhinnad noorele arhitektile; laeva ja püramiidi hübriidi vormiga elamu (arhitekt Katsuhiro Miyamoto)

  5. Arhitektuuriuudised / Karen Jagodin

    Index Scriptorium Estoniae

    Jagodin, Karen, 1982-

    2006-01-01

    Richard Rogersi Madridi lennujaam, prantsuse arhitektide odavad mudelmajad, jaapani arhitektide lükandseintega eramu nn. räästamaja, Saksamaal korraldatud multifunktsionaalsete ühiselamu/hostelitubade arhitektuurikonkursi tulemustest, arhitekt Carme Pinose kontorihoone Torre Cube Mehhikos, Sean Godselli projekteeritud eramu Austraalias, arhitektuuribüroo Alphaville projekteeritud eramu Jaapanis, Stefan Hauseri (kunstnikunimega Placed To Ride) projekteeritud Malmö rulapark

  6. IPDO-2007: Inverse Problems, Design and Optimization Symposium

    Science.gov (United States)

    2007-08-01

    Grebenniko v J. Luna Tomas Perez Manuel Enriquez 025 Alexande r Grebenniko v 026 Tsung- Chien Chen Shou- Jen Hsu Pan-Chio Tuan 028...Dulikravich 086 Helmut Sobieczky Monika Hannemann 087 Anssi Lehikoinen Arto Voutilainen Jari Kaipio Stefan Finsterle Mike Kowalsky 088

  7. Production of uranium hexafluoride by fluorination tetra-fluoride with elemental fluorine under pressure; Proizvodnja uraovega heksafluorida s tlacnim fluoriranjem uranovega tetrafluorida z elementarnim fluorom

    Energy Technology Data Exchange (ETDEWEB)

    Lutar, K; Smalc, A; Zemljic, A [Institut Jozef Stefan, Ljubljana (Yugoslavia)

    1984-07-01

    In the introduction a brief description of some activities of fluorine chemistry department at the J. Stefan Institute is given - from production of elemental fluorine to the investigations in the field of uranium technology. Furthermore, a new method for the production of uranium hexafluoride is described more in detail. The method is based on the fluorination of uranium tetrafluoride with elemental fluorine. (author)

  8. Southern Caucasus in Perspective. The scholarly debate through the pages of Seminarium Kondakovianum and Skythika (1927-1938)

    Czech Academy of Sciences Publication Activity Database

    Lovino, Francesco

    -, Supplementum (2016), s. 36-51 ISSN 2336-3452 Institutional support: RVO:68378033 Keywords : art and archaeology historiography * Seminarium Kondakovianum * Michail Rostovtzeff * Stefan Przeworski * Georgij Čubinašvili * Caucasus * church of Saint George in Samtsevrisi * animal style * bronze statuettes Subject RIV: AL - Art, Architecture, Cultural Heritage

  9. Colon cancer and the consumption of red and processed meat: an ...

    African Journals Online (AJOL)

    effect. Although this association was mainly observed for colorectal cancer, associations were also found for pancreatic and prostate ... vegetarian diet in order to prevent colon cancer. ... cancers than males at 5.2% versus 4.8%.3 Stefan4 explains that .... Smoking. X-radiation, gamma radiation. Processed meat consumption.

  10. TNO en Aedes over voordelen regisserend opdrachtgeverschap bij planmatig onderhoud

    NARCIS (Netherlands)

    Arts, S.

    2016-01-01

    Regisserend opdrachtgeverschap is voor corporaties een goede manier om met planmatig onderhoud om te gaan. Dat stellen Stefan Arts van TNO en Maarten Georgius van Aedes, die onderzoek deden naar dat nieuwe opdrachtgeverschap. Hoe het moet, staat helder op papier. Maar de praktijk is weerbarstig, zo

  11. Determination of reactor fuel burnup using passive neutron assay

    International Nuclear Information System (INIS)

    Kodeli, I.; Trkov, A.; Najzer, M.; Ertek, C.

    1988-01-01

    Passive neutron assay (PNA) method was developed to verify the fissile inventory of the irradiated reactor fuels. The characteristics of the method were studied at 'Jozef Stefan' Institute. The dependence of neutron source in the fuel on burnup, cooling time, initial enrichment and specific power were investigated and the accuracy of the method, using available computer codes was estimated. (author)

  12. Destroy The Bank! (case)

    NARCIS (Netherlands)

    G.J. Van der Star; dr. A. Maas

    2016-01-01

    DZ Bank faces some significant challenges for the near future. One of them is the way payments are being made. This case is about Stefan, the Strategic Management Consultant of DZ Bank. He struggles with innovations and new technologies, such as Bitcoins. What does this mean for the future of the

  13. Danish sponsors, English lead, Vikings, and a new roof for the church of Sainte-Geneviève in Paris

    DEFF Research Database (Denmark)

    Roesdahl, Else

    2010-01-01

    Dansk-franske forbindelse i 2. halvdel af 1100-årene, eksemplificeres ved forsøg fra abbed Stefan fra St. Geneviève i Paris på sponsorat til blytag til hans kirke fra det danske toparistokrati....

  14. Some nonlinear dynamic inequalities on time scales

    Indian Academy of Sciences (India)

    In 1988, Stefan Hilger [10] introduced the calculus on time scales which unifies continuous and discrete analysis. Since then many authors have expounded on various aspects of the theory of dynamic equations on time scales. Recently, there has been much research activity concerning the new theory. For example, we ...

  15. Beam heating of target foils

    International Nuclear Information System (INIS)

    Corwin, W.C.

    1975-01-01

    A target rotator, built to reduce the effects of beam spot heating, is fully adjustable, holds three targets, is chamber independent, and takes up limited space. The expected temperature rise in the target is calculated from the Stefan--Boltzmann law

  16. Pulsed electric field processing for fruit and vegetables

    Science.gov (United States)

    This month’s column reviews the theory and current applications of pulsed electric field (PEF) processing for fruits and vegetables to improve their safety and quality. This month’s column coauthor, Stefan Toepfl, is advanced research manager at the German Institute of Food Technologies and professo...

  17. Writing History in Exile

    NARCIS (Netherlands)

    de Baets, Antoon; Berger, Stefan

    2016-01-01

    WRITING HISTORY IN EXILE * Stefan Berger and Antoon De Baets, Reflections on Exile Historiography 11 * Antoon De Baets, Plutarch’s Thesis : the Contribution of Refugee Historians to Historical Writing (1945-2015) 27 * Peter Burke, Silver Lining : on Some Intellectual Benefits of Exile 39 * Ragnar

  18. Vanilla Ninja hitt telesaate tunnuslaul

    Index Scriptorium Estoniae

    2004-01-01

    Popansambli Vanilla Ninja laul "Blue Tattoo" valiti Saksamaal Pro 7 telesaate "Aupäev - otsus poksiringis" (Der Tag der Ehre - Entscheidung im Boxring) tunnusmeloodiaks. Eesti popansambel kutsuti külla ka Stefan Raabi show'sse TV Total Pro 7 kanalil ja muusikakanali Viva jõulushow'sse "Your Stars for Christmas"

  19. Pramana – Journal of Physics | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    We review some recent studies about the parameter determination of top quarks, bosons, Higgs bosons, supersymmetric particles and in the ADD model of extra dimensions at a linear collider. Author Affiliations. Alfred Bartl1 Stefan Hesselbach1. Institut für Theoretische Physik, Universität Wien, Boltzmanngasse 5, ...

  20. Authorship Correction: Sampling Key Populations for HIV Surveillance: Results From Eight Cross-Sectional Studies Using Respondent-Driven Sampling and Venue-Based Snowball Sampling.

    Science.gov (United States)

    Rao, Amrita; Stahlman, Shauna; Hargreaves, James; Weir, Sharon; Edwards, Jessie; Rice, Brian; Kochelani, Duncan; Mavimbela, Mpumelelo; Baral, Stefan

    2018-01-15

    [This corrects the article DOI: 10.2196/publichealth.8116.]. ©Amrita Rao, Shauna Stahlman, James Hargreaves, Sharon Weir, Jessie Edwards, Brian Rice, Duncan Kochelani, Mpumelelo Mavimbela, Stefan Baral. Originally published in JMIR Public Health and Surveillance (http://publichealth.jmir.org), 15.01.2018.

  1. Mountain Risks: From Prediction to Management and Governance

    Directory of Open Access Journals (Sweden)

    David Petley

    2015-05-01

    Full Text Available Reviewed: Mountain Risks: From Prediction to Management and Governance. Edited by Theo Van Asch, Jordi Corominas, Stefan Greiving, Jean-Philippe Malet, and Sterlacchini Simone. Dordrecht, The Netherlands: Springer, 2014. xi + 413 pp. US$ 129.00, € 90.00, € 104.00. Also available as an e-book. ISBN 978-94-007-6768-3.

  2. Tallinna uue linnamööbli kujunduse teevad itaallased / Askur Alas

    Index Scriptorium Estoniae

    Alas, Askur, 1973-

    2005-01-01

    Tallinna linnamööbli konkursi teise vooru võitjaks tunnistati Itaalia disainerite Irina Maria Suteu ja Stefan Davidovici töö "Bow". Ühtse kujunduse saavad pingid, prügikastid, ootepaviljonid ja kioskid. Eestlased finaalis ei osalenud

  3. Keemia- ja füüsikapreemiate märksõna on valgus / Arko Olesk

    Index Scriptorium Estoniae

    Olesk, Arko, 1981-

    2014-01-01

    Nobeli keemiapreemia pälvisid sakslane Stefan Hell ning ameeriklased Eric Betzig ja William Moerner, kes leidsid viisi, kuidas uurida valgusmikroskoobiga eluslooduse pisimaid komponente. Füüsikapreemia pälvisid Jaapani teadlased Isamu Akasaki, Hiroshi Amano ja Shuji Nakamura sinise valgusdioodi leiutamise eest

  4. Ventzislavi ja Nedjalko urbanistlik muinasjutt / Ott Karulin

    Index Scriptorium Estoniae

    Karulin, Ott, 1980-

    2008-01-01

    Teatritrupi Rimini Protokoll etendusest "Cargo Sofia - Tallinn", mille vormiks on linnas ringi sõitev veoauto, mille üks külg on klaasist ning laadungiks vaatajad. Lavastaja Stefan Kaegi Šveitsist, Tallinna lavastaja Jörg Karrenbauer Saksamaalt, autojuhid Ventzislavi Borisov ja Nedjalko Nedjalkov Bulgaariast. Etendused Tallinnas 4. - 12. III

  5. Indian Academy of Sciences Conference Series | Indian Academy of ...

    Indian Academy of Sciences (India)

    Author Affiliations. BOSILJKA TADIĆ1 MIROSLAV ANDJELKOVIĆ2 NEELIMA GUPTE3. Department of Theoretical Physics, Jožef Stefan Institute, Ljubljana, Slovenia; Institute for Nuclear Sciences, Vinča, Belgrade, Serbia; Indian Institute of Technology Madras, Chennai, India ...

  6. Paavst Johannes Paulus II läkitus kunstirahvale / Hendrik Lindepuu

    Index Scriptorium Estoniae

    Lindepuu, Hendrik

    1999-01-01

    Johannes Paulus II 1999. a. 4. aprilli kirjast 'Nendele, kes kirglikult ja pühendunult otsivad ilu uusi 'ilmutusi', et kinkida need maailmale kunstilise loomena'. Kunstnik kui sõnumi kuulutaja. Kas kirik vajab kunsti ja kunst kirikut.Czeslaw Milosz, Wojciech Kilar, Stefan Chwin paavsti kirjast

  7. Les dimensions d’une ombre: résonances intermédiales et collaborations artistiques entre femmes

    Directory of Open Access Journals (Sweden)

    Maryse Larivière

    2014-04-01

    Full Text Available Au sujet de l’ouvrage d’Andrea Oberhuber, Corps de papier : résonances[avec des accompagnements de Catherine Mavrikakis, Nicole Brossard et Verena Stefan] (Québec, QC, Nota Bene, 2012, 237 p. ISBN: 978-2-89518-442-3.

  8. Berliini filmifestivali finishis ei kohtu kõik / Lauri Kärk

    Index Scriptorium Estoniae

    Kärk, Lauri, 1954-

    2007-01-01

    57. Berlinale filmiturul läheb hästi Ernitsa-Põldma joonisfilmil "Leiutajateküla Lotte"; samas nähtud Vene mängufilmist "Vaba ujumine" ("Svobodnoje plavanije"; režii Boriss Hlebnikovilt). Võistlusfilme - hiinlase Wang Quan'ani "Tuya abielu", austerlase Stefan Ruzowitzky "Võltsijad" ("Die Fälscher")

  9. Detection of fuel element failures at the gas cooled reactors

    International Nuclear Information System (INIS)

    Bremsak, P.; Ranzel, S.; Ogrin, R.; Pisanski, C.

    1964-01-01

    This paper describes the system for measuring the concentration of released Kr and Xe in the cooling gas. The system developed in the Jozef Stefan Institute is efficient and suitable for application The method is based on electrostatic collection of daughter elements from radioactive decay of Xe and Kr

  10. Diffusion models for mixtures using a stiff dissipative hyperbolic formalism

    OpenAIRE

    Boudin , Laurent; Grec , Bérénice; Pavan , Vincent

    2018-01-01

    In this article, we are interested in a system of uid equations for mixtures with a sti relaxation term of Maxwell-Stefan diusion type. We use the formalism developed by Chen, Levermore, Liu in [4] to obtain a limit system of Fick type where the species velocities tend to align to a bulk velocity when the relaxation parameter remains small.

  11. Eine Welt jenseits von Facebook: alternative soziale Medien: die Forschungsagenda des Netzwerks Unlike Us

    NARCIS (Netherlands)

    Lovink, G.

    2012-01-01

    The current issue of the Zeitschrift für Medien- und Kulturforschung presents a discussion of social media's future. Geert Lovink and Stefan Heidenreich debate the sense and non-sense of network-critique in light of the internet's modified usage and perception, which is commonly labeled Web 2.0.

  12. Figures of Disengagement: Charles Taylor, Scientific Parenting, and the Paradox of Late Modernity

    Science.gov (United States)

    Van den Berge, Luc; Ramaekers, Stefan

    2014-01-01

    In this essay Luc Van den Berge and Stefan Ramaekers take the idea(l) of "scientific parenting" as an example of ambiguities that are typical of our late-modern condition. On the one hand, parenting seems like a natural thing to do, which makes "scientific parenting" sound like an oxymoron; on the other hand, a disengaged…

  13. AUTHOR INDEX

    Indian Academy of Sciences (India)

    Maji Kaushik. A time-dependent. Fourier grid. Hamiltonian-based formulation of time- dependent multi-configuration Hartree method. L983. Majumdar A S ... N = 1 super quantum chromodynamics and fractional branes. 721. Philip J see Alex A V. 87. Pokorski Stefan. Electroweak breaking and supersymme- try breaking. 369.

  14. Tõkestatud "Magnus" võitis kaks auhinda / Annika Koppel

    Index Scriptorium Estoniae

    Koppel, Annika

    2008-01-01

    Kadri Kõusaare film "Magnus" (produtsent Donal Fernandes) võitis Saksamaal "GoEasti" Ida- ja Kesk-Euroopa filmikunsti festivalil peapreemia Kuldse Liilia ja rahvusvahelise filmiajakirjanike ühingu preemia. Ka teistest filmidest : serblase Stefan Arsenijevici "Armastus ja teised kuriteod", ukrainlanna EVa Nejmani "Jõe ääres", venelase Aleksei Popogrebski "Lihtsad asjad"

  15. Race and Repression in a Dance Routine: A Response to Ramaekers and Vlieghe

    Science.gov (United States)

    Standish, Paul

    2015-01-01

    Stefan Ramaekers and Joris Vlieghe's "Infants, childhood and language in Agamben and Cavell: education as transformation" is an insightful discussion of an important facet of educational experience. In the article, they consider a Fred Astaire dance sequence from the 1953 Vincente Minnelli film, "The Band Wagon," in combination…

  16. Pimedate ööde festival ulatub teatrikinno / Jaanus Kaasik

    Index Scriptorium Estoniae

    Kaasik, Jaanus

    2004-01-01

    Rakvere Teatrikinos näidatavatest filmidest : noortefilmid "Terkel jamas", režissöör Stefan Fjeldmark, "Cool", režissöör Theo van Gogh; filmid "Sisemeri", režissöör Alejandro Amenabar ja "Nikotiin", režissöör Hugo Rodriguez

  17. Variable Deflection Response of Sensitive CNT-on-Fiber Artificial Hair Sensors from CNT Synthesis in High Aspect Ratio Microcavities (Postprint)

    Science.gov (United States)

    2015-04-01

    are successful in deflecting the hair even though no resistance change is observed, but the deflection is not electrically transduced by the nanotubes...Letters, 387(4–6), 307-311 (2004). [31] J. Stefan, “ Uber Einige Probleme der Theorie der Warmeleitung,” S.-B. Wien-Akad. Mat. Natur., 98, 173-184 (1889

  18. Changes in steel can be heard : The knock-on effect of flipping crystal lattices

    NARCIS (Netherlands)

    Van Bohemen, S.; Den Ouden, G.; Van de Graaf, A.

    2002-01-01

    Cracks in welds are a major problem in the steel processing industry. One of the causes is a change in the microstructure that occurs if steel cools too rapidly during the welding process. Researcher Stefan van Bohemen of the Applied Sciences faculty at TU Delft demonstrates how this change is

  19. Oogstjaar voor CWI-onderzoekers ‘We investeren bewust in technologie’

    NARCIS (Netherlands)

    P.A. Boncz (Peter); M.L. Kersten (Martin); S. Manegold (Stefan); D. Riksen

    2010-01-01

    textabstractIn augustus 2009 ontvingen Peter Boncz, Stefan Manegold en Martin Kersten van het Centrum Wiskunde & Informatica de prestigieuze VLDB 10-year Best Paper Award. Hun winnende artikel beschreef tien jaar geleden de eerste ideeën over ‘hardware-aware’ ontwerpen van databasesystemen.

  20. Mutual Diffusion in the Ternary Mixture of Water Plus Methanol Plus Ethanol and Its Binary Subsystems

    Czech Academy of Sciences Publication Activity Database

    Pařez, Stanislav; Guevara-Carrion, G.; Hasse, H.; Vrabec, J.

    2013-01-01

    Roč. 15, č. 11 (2013), s. 3985-4001 ISSN 1463-9076. [EMLG/JMLG Annual Meeting. Eger, 05.09.2012-09.09.2012] Institutional support: RVO:67985858 Keywords : molekular- dynamics simulations * maxwell-stefan diffusitives * activity-coefficient models Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 4.198, year: 2013

  1. Söö, joo, vaata filme / Jaak Lõhmus

    Index Scriptorium Estoniae

    Lõhmus, Jaak

    2007-01-01

    57. "Berlinale" esimese poole filmidest: Olivier Dahani "Elu on roos" ("La Mome") Edith Piafist, Robert De Niro "Hea karjane" ("The Good Shepherd"), Clint Eastwoodi "Kirjad Iwo Jimalt" ("Letters from Iwo Jima"), Wang Quanani "Tuya abielu", Stefan Ruzowitsky "Võltsijad" ("Die Fälscher")

  2. WIS Implementation Study Report. Volume 3. Background Information.

    Science.gov (United States)

    1983-10-01

    Stanely A. 47 Kramer, Dr. John F. 49 Larsen, Dr. Robert E. 55 Luenberger, Prof. David G. 58 Magliato, Mr. Frank J. 61 McQuillan, Dr. John M. 62 Miller...Sapp, Mr. John W. 88 Shelley, Mr. Stephen H. 89 Shrier , Dr. Stefan 94 Slusarczuk, Dr. Marko M.G. 96 Smeaton, Mr. Roger 99 Sykes, Mr. Wendell G. 100

  3. Zum Stand und den Perspektiven der allgemeinsprachlichen ...

    African Journals Online (AJOL)

    Mev. R.B. Ruthven

    so dass man nicht weiß, wie die Aktualität der gegenwärtigen slowenischen ...... zu wa23 in Abb. 1 gehören; Abkürzungen: A. = ABSTRAKTE; H = HIERAR-. CHISCHE ...... Ulrich, Stefan Evert, Egbert Lehmann und Christian Rohrer (Hrsg.).

  4. Browse Author Index

    African Journals Online (AJOL)

    Items 1 - 35 of 35 ... Emmelin, Maria · Endale, A · Endeshaw, T · Endeshaw, T · Endeshaw, Tekola · Engers, H · Engida, Endale · Engidawork, Ephrem · Enqueselassie, F · Enqueselassie, F · Enquoselassie, Fikre · Enquselassie, F · Enquselassie, Fikre · Ergete, W · Ergete, Wondwossen · Ergete, Wondwossen · Erisksson, Stefan

  5. Un miniatore nella bottega degli Astrapas? Alcune osservazioni attorno alle immagini del Tolomeo Marciano gr. Z. 516 (904)

    Czech Academy of Sciences Publication Activity Database

    Lovino, Francesco

    -, č. 22 (2016), s. 384-398 ISSN 1330-7274 Institutional support: RVO:68378033 Keywords : Astrapas * Marc. gr. Z. 516 (904) * Thessaloniki * Claudius Ptolemy * Gračanica * Paleologan Illumination * Stefan Uroš II Milutin * Aristotelianism Subject RIV: AL - Art, Architecture, Cultural Heritage

  6. Journal of Biosciences | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Biosciences. Will D Penny. Articles written in Journal of Biosciences. Volume 32 Issue 1 January 2007 pp 129-144 Articles. Dynamic causal models of neural system dynamics: current state and future extensions · Klaas E Stephan Lee M Harrison Stefan J Kiebel Olivier David Will D Penny Karl J ...

  7. ALICE TPC gas system is the first of the LHC experiments to be put on line

    CERN Document Server

    Maximilien Brice

    2006-01-01

    Picture 01 : the Physics Department's DT1 gas systems team in their laboratory. Picture 02 : Chilo Garabatos (ALICE) and Stefan Haider (PH-DT1-GS) in front of the gas system for the ALICE TPC which has just been put on line.

  8. Reactor core design calculations and fuel management in PWR; Izracun projekta sredice in upravljanja z forivom tlacnovodnega reaktorja

    Energy Technology Data Exchange (ETDEWEB)

    Ravnik, M [Institut Jozef Stefan, Ljubljana (Yugoslavia)

    1987-07-01

    Computer programs and methods developed at J. Stefan Institute for nuclear core design of Krsko NPP are treated. development, scope, verification and organisation of core design procedure are presented. The core design procedure is applicable to any NPP of PWR type. (author)

  9. Slovenia joins IPPOG as member

    CERN Multimedia

    'marcelloni, claudia

    2018-01-01

    Slovenia became an official member of IPPOG on 19 April 2018. The MOU was signed by the head of Particle Physics Department at Jozef Stefan Institute representing Slovenia participation at IPPOG. Andrej Gorišek, country representative for Slovenia in IPPOG, brought the document to the meeting in Italy where IPPOG chairs signed it, confirming Slovenia membership to the collaboration.

  10. On the treatment of plane fusion front in lumped parameter thermal models with convection

    International Nuclear Information System (INIS)

    Le Tellier, R.; Skrzypek, E.; Saas, L.

    2017-01-01

    Highlights: • Solid phase approximations for a two-phase Stefan fusion problem with convection are analyzed. • A reference solution combines integral conservation eqs and a FE solution of the 1D heat equation. • Numerical results are presented for a transient in light water reactor severe accident analysis. • The models performances are highlighted on fusion transients in terms of Biot and Stefan numbers. - Abstract: Within the framework of lumped parameter models for integral codes, this paper focuses on the modeling of a two-phase Stefan fusion problem with natural convection in the liquid phase. In particular, this specific Stefan problem is of interest when studying corium pool behavior in the framework of light water reactor severe accident analysis. The objective of this research is to analyze the applicability of different approximations related to the modeling of the solid phase in terms of boundary heat flux closure relations. Three different approximations are considered: a quadratic profile based model, a model where a parameter controls the power partitioning at the interface and the steady state conduction assumption. These models are compared with an accurate front-tracking solution of this plane fusion front problem. This “reference” is obtained by combining the same integral conservation equations as the approximate models with a mesh-based solution of the 1D heat equation. Numerical results are discussed for a typical configuration of interest for corium pool analysis. Different fusion transients (constructed from nondimensionalization considerations in terms of Biot and Stefan numbers) are used in order to highlight the potential and limitations of the different approximations.

  11. Prestigious US awards for CERN computing

    CERN Multimedia

    2001-01-01

    On 4 June in the distinguished surroundings of Washington's National Building Museum, IT Deputy Division Leader Les Robertson accepted a 21st Century Achievement Award from the Computerworld Honors Program on behalf of CERN. This prestigious award was made to CERN for its innovative application of information technology to the benefit of society. Members of the team that initiated the SHIFT project with the Computerworld trophy. The team was a collaboration between the Information Technology Division, the OPAL experiment and Indiana University. From left to right, Ben Segal, Matthias Schroeder, Gail Hanson, Bernd Panzer, Jean-Philippe Baud, Les Robertson and Frédéric Hemmer. CERN's award followed the Laboratory's nomination by Lawrence Ellison, Chairman and CEO of the Oracle Corporation. Ellison nominated CERN in recognition of 'pioneering work in developing a large scale data warehouse' - an innovative computing architecture that responds precisely to the global particle physics commun...

  12. The VW Tuareg; Der VW Touareg

    Energy Technology Data Exchange (ETDEWEB)

    Basshuysen, Richard van; Siebenpfeiffer, Wolfgang (eds.)

    2010-03-15

    The brochure under consideration reports on the new VW Tuareg constructed by Volkswagen AG (Wolfsburg, Federal Republic of Germany) and consists of the following contributions: (a) The new Touareg (Jochen Boehle); (b) Package and ergonomics (Martin Wiel); (c) 'La Semplicitr' - The design of the new Touareg (Klaus Bischoff); (d) The new Touareg - A SUV of the modern times (Ralph Nieraese, Volker Rathje); (e) The drive (Henning Nissel); (f) The new Tuareg hybrid (Jochen Boehle, Bernd Stiebels); (g) The chassis (Sven Albrecht); (h) Car body electronics and infotainment (Thomas Kiesewetter); (i) Driver assistance systems (Reiner Katzwinkel, Stephan Kopischke); (j) Safety of the car - Integral safety (Peter Hennig); (k) The car body (Susann Mussehl); (l) the interieur (Babette Stange).

  13. Elevatated CO2 alleviates heat stress tolerance in wheat

    DEFF Research Database (Denmark)

    Kjær, Katrine Heinsvig; Rosenqvist, Eva S. K.; Ottosen, Carl-Otto

    2014-01-01

    Title: The alleviating effect of elevated CO2 on heat stress susceptibility of two wheat (Triticum aestivum L.) cultivars Session: Plant response and adaptation to abiotic stress Sindhuja Shanmugam1, Katrine Heinsvig Kjaer2*, Carl-Otto Ottosen2, Eva Rosenqvist3, Dew Kumari Sharma3 and Bernd...... Wollenweber4 1Department of Bioenergy, Tamilnadu Agricultural University, Coimbatore, India. 2Department of Food Science, Aarhus University, Kirstinebjergvej 10, 5792 Årslev, Denmark 3Institute of Agricultural Sciences and Ecology, University of Copenhagen, Hojbakkegaard Allé 9, 2630 Taastrup, Denmark 4......Institute for Agroecology, Aarhus University, Forsøgsvej 1, 4200 Slagelse, Denmark *Presenting author This study analysed the alleviating effect of elevated CO2 on stress-induced decreases in photosynthesis and changes in carbohydrate metabolism in two wheat cultivars (Triticum aestivum L.) of different...

  14. Nina Otto, Enargeia. Untersuchung zur Charakteristik alexandrinischer Dichtung

    Directory of Open Access Journals (Sweden)

    Christophe Cusset

    2011-07-01

    Full Text Available L’étude part dans l’introduction d’une présentation circonstanciée et précise des thèses différentes de Bernd Effe et de Graham Zanker sur le traitement du réalisme, qui permet néanmoins de mettre en évidence le même phénomène caractéristique de la poésie hellénistique, à savoir que celle-ci est parcourue par la représentation jusque-là inégalée de la réalité quotidienne et triviale et par la volonté de mettre la poésie le plus étroitement possible en rapport avec une expérience intellectuell...

  15. Fuel cells science and engineering. Materials, processes, systems and technology. Vol. 2

    Energy Technology Data Exchange (ETDEWEB)

    Stolten, Detlef; Emonts, Bernd (eds.) [Forschungszentrum Juelich GmbH (DE). Inst. fuer Energieforschung (IEF), Brennstoffzellen (IEF-3)

    2012-07-01

    The second volume is divided in four parts and 19 chapters. It is structured as follows: PART V: Modeling and Simulation. Chapter 23: Messages from Analytical Modeling of Fuel Cells (Andrei Kulikovsky); 24: Stochastic Modeling of Fuel-Cell Components (Ralf Thiedmann, Gerd Gaiselmann, Werner Lehnert and Volker Schmidt); 25: Computational Fluid Dynamic Simulation Using Supercomputer Calculation Capacity (Ralf Peters and Florian Scharf); 26 Modeling Solid Oxide Fuel Cells from the Macroscale to the Nanoscale (Emily M. Ryan and Mohammad A. Khaleel); 27: Numerical Modeling of the Thermomechanically Induced Stress in Solid Oxide Fuel Cells (Murat Peksen); 28: Modeling of Molten Carbonate Fuel Cells (Peter Heidebrecht, Silvia Piewek and Kai Sundmacher); Chapter 29: High-Temperature Polymer Electrolyte Fuel-Cell Modeling (Uwe Reimer); Chapter 30: Modeling of Polymer Electrolyte Membrane Fuel-Cell Components (Yun Wang and Ken S. Chen); 31: Modeling of Polymer Electrolyte Membrane Fuel Cells and Stacks (Yun Wang and Ken S. Chen). PART VI: Balance of Plant Design and Components. Chapter 32: Principles of Systems Engineering (Ludger Blum, Ralf Peters and Remzi Can Samsun); 33: System Technology for Solid Oxide Fuel Cells (Nguyen Q. Minh); 34: Desulfurization for Fuel-Cell Systems (Joachim Pasel and Ralf Peters); 35: Design Criteria and Components for Fuel Cell Powertrains (Lutz Eckstein and Bruno Gnoerich); 36: Hybridization for Fuel Cells (Joerg Wilhelm). PART VII: Systems Verification and Market Introduction. Chapter 37: Off-Grid Power Supply and Premium Power Generation (Kerry-Ann Adamson); 38: Demonstration Projects and Market Introduction (Kristin Deason). PART VIII: Knowledge Distribution and Public Awareness. Chapter 39: A Sustainable Framework for International Collaboration: the IEA HIA and Its Strategic Plan for 2009-2015 (Mary-Rose de Valladares); 40: Overview of Fuel Cell and Hydrogen Organizations and Initiatives Worldwide (Bernd Emonts) 41: Contributions for

  16. Fabrication of MWCNT/NiO nanocomposite thin films for optically selective solar absorbers

    CSIR Research Space (South Africa)

    Roro, Kittessa T

    2011-07-01

    Full Text Available = ?T4, ? = 5.67 ? 10-8 W/m2K4 (1) (Stefan-Boltzmann law) 0.1 1 10 0.0 0.2 0.4 0.6 0.8 1.0 S pe ctral rad iatio n (arb . u nits ) Wave length (?m) 0.0 0.2 0.4 0.6 0.8 1.0 Id ea l s el ec tiv e ab so rb er Blackbody... T = 373 K Solar (AM 1.5) Reflectance Fundamentals: Optical Selectivity The power density ,P, of thermal radiation emitted by a black body of temperature T is P = ?T4, ? = 5.67 ? 10-8 W/m2K4 (1) (Stefan-Boltzmann law) At T = 80 ?C, from eq. (1...

  17. Multiwall carbon nanotube/nickel oxide nanocompositecoatings: Sol-gel deposition and characterization

    CSIR Research Space (South Africa)

    Roro, Kittessa T

    2011-09-01

    Full Text Available The power density ,P, of thermal radiation emitted by a black body of temperature T is P = ?T4, ? = 5.67 ? 10-8 W/m2K4 (1) (Stefan-Boltzmann law) 0.1 1 10 0.0 0.2 0.4 0.6 0.8 1.0 S p ec tr al r ad ia ti o n ( ar b . u n it s... black body of temperature T is P = ?T4, ? = 5.67 ? 10-8 W/m2K4 (1) (Stefan-Boltzmann law) At T = 80 ?C, from eq. (1), P ~ 900 W/m2 ~ incident solar energy at the ground ? An optically selective surface is required Samples were fabricated in a simple...

  18. Implementing Environmental Management Accounting: Status and Challenges

    DEFF Research Database (Denmark)

    Cost Accounting - and its Interaction with Eco-Efficiency Performance Measurement and Indicators; Stefan Schaltegger and Marcus Wagner. 4. Environmental Accounting Dimensions: Pros and Cons of Trajectory Convergence and Increased Efficiency; Pontus Cerin and Staffan Laestadius. 5. Process and Content......Table of contents Preface. 1. Environmental Management Accounting: Innovation or Managerial Fad?; Pall Rikhardsson, Martin Bennett, Jan Jaap Bouma and Stefan Schaltegger. Section 1 Progress. 2. Challenges for Environmental Management Accounting; Roger L. Burritt 3. Current Trends in Environmental......: Visualizing the Policy Challenges of Environmental Management Accounting; Dick Osborn. Section 2 Exploring EMA implementation issues. 6. Environmental Performance and the Quality of Corporate Environmental Reports: The Role of Environmental Management Accounting; Marcus Wagner. 7. Environmental Risk...

  19. Election Verifiability: Cryptographic Definitions and an Analysis of Helios and JCJ

    Science.gov (United States)

    2015-08-06

    Computer Society, 2014. To appear. [26] David Chaum . Untraceable electronic mail, return addresses, and digital pseudonyms. Communications of the ACM...24(2):84–88, 1981. [27] David Chaum . Secret-ballot receipts: True voter-verifiable elections. IEEE Security and Privacy, 2(1):38–47, 2004. [28... David Chaum , Richard Carback, Jeremy Clark, Aleksander Essex, Stefan Popoveniuc, Ronald L. Rivest, Peter Y. A. Ryan, Emily Shen, and Alan T. Sherman

  20. Improving public information with an interactive lecture approach

    International Nuclear Information System (INIS)

    Tkavc, M.

    2003-01-01

    Providing public information is one of the main activities of The Nuclear Training Centre (ICJT) at the Jozef Stefan Institute. Our primary target is students of primary and secondary schools. The lecture they listen to during their visit to our centre was old fashioned since we used classic overhead projector. We have modernized it with an LCD projector and computer-based interactive presentation in order to improve students' comprehension. (author)

  1. Water Operations Technical Support Program. Water Quality Management for Reservoirs and Tailwaters. Report 1. In-Reservoir Water Quality Management Techniques

    Science.gov (United States)

    1989-01-01

    Harrison was Chief, EL. Drs. J. Barko, J. Mahloch, H. Westerdahl , K. Getsinger, R. Engler, T. Wright, and H. Smith, EL; Messrs. E. Theriot and L. Decell...Brown (1978); Janik, Taylor, and Barko (1980); Hanson and Stefan (1984); Westerdahl and Getsinger (1988). Theory and Design Herbicides and algicides...the plant is unclear except that it behaves like an auxin (Loos 1975, Westerdahl and Hall 1983). The herbicide 2,4-D is particularly effective against

  2. Heating of leads casks. An analytical solution to the heat equation made up of a series of Laguerre functions; Echauffement des chateaux de plomb. Une solution analytique a l'equation de la chaleur constituee par une serie de fonctions de Laguerre

    Energy Technology Data Exchange (ETDEWEB)

    Formery, Ph; Gilles, A [Commissariat a l' Energie Atomique, Dir. des Productions, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1968-07-01

    The packing used for the transport of highly radioactive materials such as in-pile irradiated rods; have to comply to fairly strict safety standards. They should in particular resist to fire without the radioactive protection being seriously affected. The heating of a transport cask placed in a fire has been calculated by normal automatic computation methods assuming that only thermal radiation is responsible for the heating and that this obeys STEFAN'S law. Simultaneously, a purely analytical treatment has been attempted as follows. The existence of a simple solution, of the Laguerre function type, to the heat equation has been demonstrated. By superposing an infinite number of simple solutions, it is possible to produce a fairly general solution, depending on parameters, which satisfies the initial state and the limiting conditions. The parameters can be adjusted so that the temperature and the flux produced on the shell by this solution satisfy approximately STEFAN'S relationship. (authors) [French] Les emballages qui servent au transport de produits fortement radioactifs, tels que des barreaux irradies dans les piles, doivent satisfaire a des normes de securite assez strictes. Ils doivent, en particulier, resister au feu sans que la protection contre le rayonnement soit sensiblement entamee. L'echauffement, par seul rayonnement thermique suppose obeir a la loi de STEFAN, d'un chateau de transport plonge dans un feu a ete calcule par les methodes habituelles du calcul automatique. Parallelement a ete tentee l'approche purement analytique que voici: Une solution simple, du type fonction de LAGUERRE, a l'equation de la chaleur est mise en evidence. La superposition, en nombre infini, de solutions simples, permet de fabriquer une solution assez generale dependant de parametres, satisfaisant a l'etat initial et aux conditions aux limites. Les parametres peuvent etre ajustes de facon que la temperature et le flux engendres sur la coque par cette solution

  3. Demonstrativeness of using energy rather than mass as the unit of measure for a number of problems in physics, mechanics, and geophysics

    International Nuclear Information System (INIS)

    Golitsyn, G S

    2008-01-01

    Changing from the mass - length - time to the energy - length - time system of units is suggested as a means by which a number of problems in physics, mechanics, and geophysics can be more easily and conveniently solved using similarity analysis and dimensional methods. Eight examples are presented, with the derivations of the Stefan - Boltzmann radiation law, total kinetic energy of a hurricane, cosmic ray energy spectrum, etc. (methodological notes)

  4. Learning to Identify Local Flora with Human Feedback (Author’s Manuscript)

    Science.gov (United States)

    2014-06-23

    cally tag images with species names of flora or fauna to sup- port content-based retrieval [10]. Detecting and identifying species could help to infer...Learning to Identify Local Flora with Human Feedback Stefan Lee and David Crandall School of Informatics and Computing Indiana University {steflee...applications that use consumer pho- tos to track the distribution of natural phenomena [8]. But flora identification is a very difficult problem, both

  5. Symbolic Dynamics and Grammatical Complexity

    Science.gov (United States)

    Hao, Bai-Lin; Zheng, Wei-Mou

    The following sections are included: * Formal Languages and Their Complexity * Formal Language * Chomsky Hierarchy of Grammatical Complexity * The L-System * Regular Language and Finite Automaton * Finite Automaton * Regular Language * Stefan Matrix as Transfer Function for Automaton * Beyond Regular Languages * Feigenbaum and Generalized Feigenbaum Limiting Sets * Even and Odd Fibonacci Sequences * Odd Maximal Primitive Prefixes and Kneading Map * Even Maximal Primitive Prefixes and Distinct Excluded Blocks * Summary of Results

  6. Improvement of Evaluated Nuclear Data Files with Emphasis on Activation and Dosimetry Reactions

    International Nuclear Information System (INIS)

    Trkov, A.

    2013-01-01

    Researchers from the Jozef Stefan Institute are actively involved in the development of the fusion technology through the Slovenian Fusion Association. Neutronics calculations are one of the key areas of expertise and FENDL library is the reference library for the ITER device. The quality of the nuclear data library is therefore of great concern, which drives the motivation for participation in the CRP. Specific contributions to the CRP are briefly described

  7. Optical probes in biology

    CERN Document Server

    Zhang, Jin; Schultz, Carsten

    2015-01-01

    Introduction and BasicsEngineering of Optimized Fluorescent Proteins: An Overview from a Cyan and FRET Perspective Lindsay Haarbosch, Joachim Goedhart, Mark A. Hink, Laura van Weeren, Daphne S. Bindels, and Theodorus W.J. GadellaFluorescent Imaging Techniques: FRET and Complementary Methods Stefan Terjung and Yury BelyaevTracking: Sensors for Tracking BiomoleculesProtein-Based Calcium Sensors Thomas Thestrup and Oliver GriesbeckMonitoring Membrane Lipids with Protein Domains Expressed in Living Cells Peter Varnai

  8. Investigation of Non-Conventional Bio-Derived Fuels for Hybrid Rocket Motors

    Science.gov (United States)

    2007-08-01

    substances (26- 28). The exact chemical composition is dependent on what type of bee produces the beeswax and the type of pollen consumed by the bees ...2007. 27. Bogdanov, Stefan, “Quality and Standards of Pollen and Beeswax,” Swiss Bee Research Centre, Bern Switzerland, 2004. 28. Krell, R. “Value...Digital Ae Nozzle exit cross-sectional area Ap Combustion port cross-sectional area At Nozzle throat cross-sectional area c

  9. A molecular dynamics investigation of the unusual concentration dependencies of Fick diffusivities in silica mesopores

    NARCIS (Netherlands)

    Krishna, R.; van Baten, J.M.

    2011-01-01

    Molecular Dynamics (MD) simulations were carried out to determine the self-diffusivitiy, Di,self, the Maxwell-Stefan diffusivity, Ði, and the Fick diffusivity, Di, for methane (C1), ethane (C2), propane (C3), n-butane (nC4), n-pentane (nC5), n-hexane (nC6), n-heptane (nC7), and cyclohexane (cC6) in

  10. Area Handbook Series: Czechoslovakia: A Country Study

    Science.gov (United States)

    1989-01-01

    It would play an im- portant role in the development of the Czech nation. The Bohemian Kingdom was a major medieval and early modern political, eco...implications for Czech history, it is im- portant to remember that the Bohemian Kingdom was a medieval state in which ethnic or national questions were...London], 5, No. 3, Autumn 1976, 57-60. " Literatura ." Encyklopidia Slovenska, III. Bratislava: VEDA, 1979. Mandel, Stefan. "Filling the Vacuum," Index on

  11. Take part in the Poster Forum

    CERN Multimedia

    2008-01-01

    The CERN Control Week will run from 17 to 23 May 2008. For the first time, the IT-CO group will be organising a "poster forum" on the theme of process control, which will be held in the main hall of Building 500 in Meyrin, near Restaurant No. 1 (see Bulletin No. 16/2008). If you wish to take part, there is still time to send your posters to Mathias Dutour or Stefan Lueders.

  12. With Silent Lips

    DEFF Research Database (Denmark)

    Isar, Nicoletta

    2010-01-01

    gennem stilhed af disse paradoksale hellige tekster, som jeg håber at gøre hørbare min komplimenter og de bedste ønsker til min ven, prof. Stefan Smjadovsky Cet article est dédié à une amitié académique durable, inspirante et inspirée, en même temps, par un amour commun pour cette entité vivante...

  13. Determination of pore diameter from rejection measurements with a mixture of oligosaccharides

    Energy Technology Data Exchange (ETDEWEB)

    Espinoza-Gomez, Heriberto; Rogel-Hernandez, Eduardo [Universidad Autonoma de Baja California-Tijuana, Facultad de Ciencias Quimicas e Ingenieria, Tijuana, BC (Mexico); Lin, Shui Wai [Centro de Graduados e Investigacion del Instituto Tecnologico de Tijuana, Apdo. Postal 1166, Tijuana, BC (Mexico)

    2005-04-01

    This paper present a method to determine pore diameters and effective transport through membranes using a mixture of oligosaccharides. The results are compared with the Maxwell-Stefan equations. The partition coefficients of the solutes are a function of the pore diameter according to the Ferry equation. Thus, with the pore diameter as the only unknown parameter, rejection is described and the pore diameter is obtained by a Marquardt-Levenberg optimization procedure. (orig.)

  14. Ukraine is nuclear Great Power

    International Nuclear Information System (INIS)

    Svolik, S.

    2005-01-01

    In this paper the interview with Mr. Jaroslav Holubec - the Director of the Mochovce NPP is published. MR. Jaroslav Holubec with Mr. Stefan Niznan - the Director of the 3 r d and 4 th blocks of the Mochovce NPP - took part in opening commissioning of blocks on the Rovno NPP and Khmelnitskaya NPP, both with installed reactors 1,000 MW. Development of nuclear energetics in the Ukraine is discussed. The share of nuclear energy on the production of the Ukraine constitutes 42 %

  15. Piezosurgery in implant dentistry

    OpenAIRE

    St?binger, Stefan; Stricker, Andres; Berg, Britt-Isabelle

    2015-01-01

    Stefan Stübinger,1 Andres Stricker,2 Britt-Isabelle Berg3,4 1Hightech Research Center of Cranio-maxillofacial Surgery, University of Basel, Allschwil, Switzerland; 2Private Practice, Konstanz, Germany; 3Department of Cranio-maxillofacial Surgery, University Hospital Basel, Basel, Switzerland; 4Division of Oral and Maxillofacial Radiology, Columbia University Medical Center, New York, NY, USA Abstract: Piezosurgery, or the use of piezoelectric devices, is being applied increasingly i...

  16. Cooling methods for power plants

    International Nuclear Information System (INIS)

    Gaspersic, B.; Fabjan, L.; Petelin, S.

    1977-01-01

    There are some results of measurements carried out on the wet cooling tower 275 MWe at TE Sostanj and on the experimental cooling tower at Jozef Stefan Institute, as well. They are including: the measurements of the output air conditions, the measurements of the cross current of water film and vapour-air flowing through two plates, and the distribution of velocity in boundary layer measured by anemometer

  17. Application of temporal LNC logic in artificial intelligence

    Science.gov (United States)

    Adamek, Marek; Mulawka, Jan

    2016-09-01

    This paper presents the temporal logic inference engine developed in our university. It is an attempt to demonstrate implementation and practical application of temporal logic LNC developed in Cardinal Stefan Wyszynski University in Warsaw.1 The paper describes the fundamentals of LNC logic, architecture and implementation of inference engine. The practical application is shown by providing the solution for popular in Artificial Intelligence problem of Missionaries and Cannibals in terms of LNC logic. Both problem formulation and inference engine are described in details.

  18. Challenging the Application of PMESII-PT in a Complex Environment

    Science.gov (United States)

    2010-05-21

    presentation of the counterintuitive nature of sports teams in regard to cooperation and competition. Every sports team has within it a mixture of...Second, the holistic approach will employ the art of iterative metaquestioning rather than linear answering. Abstract Dimensions: Facets for...article responding to Flavell’s thoughts on metacognition, Werner Feibel, a colleague of Flavell, 216Colonel Stefan J. Banach. “The Art of Design

  19. The lichens, tritium and carbon 14 integrators; Les lichens, integrateurs de tritium et de carbone 14

    Energy Technology Data Exchange (ETDEWEB)

    Daillant, O

    2007-07-01

    The present report concerns a research for the tritium and for the carbon 14 in lichens in a spirit of bio-indication: the first results appear in Daillant and al (2004 ) and additional results were presented to the congress B.I.O.M.A.P. in Slovenia, organized collectively by the institute Josef Stefan from Ljubljana and the international atomic energy agency from Vienna (Daillant and al 2003). (N.C.)

  20. Osteogenic capacity of nanocrystalline bone cement in a weight-bearing defect at the ovine tibial metaphysis

    OpenAIRE

    Harms, Christoph; Helms,; Taschner,; Stratos,; Ignatius,; Gerber,Thomas; Lenz,; Rammelt,; Vollmar,Brigitte; Mittlmeier,Thomas

    2012-01-01

    Christoph Harms,1 Kai Helms,1 Tibor Taschner,1 Ioannis Stratos,1 Anita Ignatius,5 Thomas Gerber,2 Solvig Lenz,3 Stefan Rammelt,6 Brigitte Vollmar,4 Thomas Mittlmeier11Department of Trauma and Reconstructive Surgery, 2Department for Materials Research and Nanostructures, Institute for Physics, 3Department of Oral and Maxillofacial Plastic Surgery, 4Institute for Experimental Surgery, University of Rostock, Rostock, 5Institute of Orthopaedic Research and Biomechanics, University of Ulm, Ulm, 6C...

  1. Energy Barriers and Hysteresis in Martensitic Phase Transformations

    Science.gov (United States)

    2008-08-01

    glacial acetic acid (CH3COOH) and 10-15% perchloric acid (HCLO4) by volume, the cathode was stainless steel , the anode was stainless steel or Ti, the...Submitted to Acta Materialia Energy barriers and hysteresis in martensitic phase transformations Zhiyong Zhang, Richard D. James and Stefan Müller...hysteresis based on the growth from a small scale of fully developed austenite martensite needles. In this theory the energy of the transition layer plays a

  2. Technology Evaluation for Paintable Computing and Paintable Displays RF Nixel Seedling

    Science.gov (United States)

    2006-04-15

    Rate Emissivity of Sphere (Value for black anodized aluminum; typical value for non- reflective engineering materials) Stefan-Boltzmann Constant...K Materials HHO =4186 2 Jjkg-K HAl =900 Jjkg-K C1h =pVH Thermal Capacitance rth = Rthcth Thermal Time Constant 26 4.1.3 Pulsed Power Safe...ZnO Mass Transport Ion Transport / Self-Assembled Light Emission Hole Membrane Catalyzed Carbon Electrode ~ Zinc powder I KOH Electrolyte

  3. A numerical scheme for a kinetic model for mixtures in the diffusive limit using the moment method

    OpenAIRE

    Bondesan , Andrea; Boudin , Laurent; Grec , Bérénice

    2018-01-01

    In this article, we consider a multi-species kinetic model which leads to the Maxwell-Stefan equations under a standard diffusive scaling (small Knudsen and Mach numbers). We propose a suitable numerical scheme which approximates both the solution of the kinetic model in rarefied regime and the one in the diffusion limit. We prove some a priori estimates (mass conservation and nonnegativity) and well-posedness of the discrete problem. We also present numerical examples where we observe the as...

  4. Biomechanics of Head, Neck, and Chest Injury Prevention for Soldiers

    Science.gov (United States)

    2011-03-01

    30 am – 5:00 pm Overview of Blast Physics and Applications Doubletree Hotel Crystal City Arlington VA, Between the Pentagon and National Airport at...provided) 8:30 Introduction and Overview Dr. Stefan Duma, Virginia Tech Head Injury Biomechanics 8:45 “Instrumented Helmet Data Collection and Analysis...of NASA Suit Interface and Landing Conditions” Ms. Kerry Danelson, Wake Forest University 4:05 “Modeling Human Variation: Orbit Anthropometry and

  5. Microoptics

    CERN Document Server

    Sinzinger, Stefan

    2003-01-01

    Microoptics is an important enabling technology for many areas of application. In this updated second edition of their modern text and reference book, Stefan Sinzinger and J?rgen Jahns expertly and comprehensively present the basics and applications in microoptics, while incorporating the most important developments in recent years.An absolute must for physicists and electrical engineers, from advanced students right up to designers working in the field.

  6. Mathematical modeling of the heat frozen earth in OpenFOAM

    International Nuclear Information System (INIS)

    Kudryashov, N.A.; Chmykhov, M.A.; Kartashev, A.P.

    2015-01-01

    A mathematical model of heating permafrost has been presented with allowance for the Stefan condition at the boundary melting. A numerical algorithm has been proposed for analyzing this process. A computation module has been developed on an open architecture with the use of object-oriented programming language OpenFOAM. The computation module has been verified on the known exact solutions of simplified problems [ru

  7. WIS Implementation Study Report. Volume 1. Main Report.

    Science.gov (United States)

    1983-10-01

    Luenberger, Prof. David G. * Stanford University Ries, Dr. Daniel R. * Computer Corporation of America Schill, John Naval Ocean Systems Center Shrier , Dr...Robert E. 43 Kaczmarek, Dr. Thomas S. 45 Klein, Dr. Stanely A. 47 Kramer, Dr. John F. 49 Larsen, Dr. Robert E. 55 Luenberger, Prof. David G. 58...Riddle, Dr. William E. 76 Ries, Dr. Daniel R. 82 Sapp, Mr. John W. 88 Shelley, Mr. Stephen H. 89 Shrier , Dr. Stefan 94 Slusarczuk, Dr. Marko M.G. 96

  8. Utilization of Slovenian TRIGA Mark II reactor

    International Nuclear Information System (INIS)

    Snoj, L.; Smodis, B.

    2010-01-01

    TRIGA Mark II research reactor at the Jozef Stefan Institute [JSI] is extensively used for various applications, such as: irradiation of various samples, training and education, verification and validation of nuclear data and computer codes, testing and development of experimental equipment used for core physics tests at a nuclear power plant. The paper briefly describes the aforementioned activities and shows that even such small reactors are still indispensable in nuclear science and technology. (author)

  9. A Nodal Domain Integration Model of Two-Dimensional Heat and Soil-Water Flow Coupled by Soil-Water Phase Change.

    Science.gov (United States)

    1987-06-01

    34€ -’. ’. . - . . . . .. . . . .-. . . . .. . . . . -. .-- - -.. . - . . ". . ’ 29. Stefan, J., " Uber die Theorie der Eisbildung, Insbesandere Uber die Eisbil- dung im Polarmeere," Sitzungsberichte de Mathematisch...DIMENSIONL 2/2 Mt EAT AID SOIL-MATER F.. (U) MILLIANSON AND SCHMID IRVINE WN fjFI E CA T NROMADKAR JUN. 87 CRREL-SR-87-9 /91 M LsonI MENOMINEE

  10. Jozef Schreier (1909-1943). Biografia

    OpenAIRE

    Maligranda, Lech

    2013-01-01

    Jozef (Josef) Schreier was a Polish mathematician, working in functionalanalysis, group theory and combinatorics. In 1934 he defended Ph.D. thesis On finite basis in topological groups at the University of Jan Kazimierz in Lwow under supervision of Stefan Banach, and was active member of the so-called Lwow School of Mathematics. He published 16 scientific papers and his name is known in mathematics for Schreier spaces, Schreier sets, and Schreier-Ulam theorems. In April 1943, committed suicid...

  11. Neues aus dem Forschungsfeld Deutsch als Zweitsprache. Sammelrezension

    Directory of Open Access Journals (Sweden)

    Claus Altmayer

    2015-03-01

    Full Text Available Neues aus dem Forschungsfeld Deutsch als Zweitsprache. Sammelrezension (Teil 2 von Bernt Ahrenholz (Hrsg. (2009, Empirische Befunde zu DaZ-Erwerb und Sprachförderung. Beiträge aus dem 3. ‚Workshop Kinder mit Migrationshintergrund‘; Karen Schramm & Christoph Schröder (Hrsg. (2009, Empirische Zugänge zu Spracherwerb und Sprachförderung in Deutsch als Zweitsprache; Stefan Jeuk (2010, Deutsch als Zweitsprache in der Schule. Grundlagen - Diagnose – Förderung

  12. Laser Stimulated Genomic Exchange in Stem Cells. Laser Non-cloning Techniques

    Science.gov (United States)

    Stefan, V. Alexander

    2012-02-01

    I propose a novel technique for a pluripotent stem cell generation. Genomic exchange is stimulated by the beat-wave free electron laser, (B-W FEL), frequency matching with the frequencies of the DNAootnotetextJ.D. Watson and F. H. C. Crick, Nature, 171, 737-738 (1953). eigen-oscillations. B-W FEL-1ootnotetextV. Stefan, B.I.Cohen, C. Joshi Science, 243,4890, (Jan 27,1989); Stefan, et al., Bull. APS. 32, No. 9, 1713 (1987); Stefan, APS March-2011, #S1.143; APS- March-2009, #K1.276. scans entire stem cell; B-W FEL-2 probes the chromosomes. The scanning and probing lasers: 300-500nm and 100-300nm, respectively; irradiances: the order-of-10s mW/cm^2 (above the threshold value for a particular gene structure); repetition rate of few-100s Hz. A variety of genetic-matching conditions can be arranged. Genomic glitches, (the cell nucleus transferootnotetextScott Noggle et al. Nature, 478, 70-75 (06 October 2011).), can be hedged by the use of lasers.

  13. Laser-Neuron Interaction with Femtosecond Beat-Modulated 800-1200 nm Photon Beams, as the Treatment of Brain Cancer Tissue. Laser Neurophysics

    Science.gov (United States)

    Stefan, V. Alexander

    2011-03-01

    I propose a novel mechanism for the brain cancer tissue treatment: nonlinear interaction of ultrashort pulses of beat-photon, (ω1 -- ω2) , or double-photon, (ω1 +ω2) , beams with the cancer tissue. The multiphoton scattering is described via photon diffusion equation. The open-scull cerebral tissue can be irradiated with the beat-modulated photon pulses with the laser irradiances in the range of a few mW/cm2 , and repetition rate of a few 100s Hz generated in the beat-wave driven free electron laser. V. Stefan, B. I. Cohen, and C. Joshi, Nonlinear Mixing of Electromagnetic Waves in PlasmasScience 27 January 1989: V. Alexander Stefan, Genomic Medical Physics: A New Physics in the Making, (S-U-Press, 2008).} This highly accurate cancer tissue ablation removal may prove to be an efficient method for the treatment of brain cancer. Work supported in part by Nikola Tesla Laboratories (Stefan University), La Jolla, CA.

  14. Solving one-dimensional phase change problems with moving grid method and mesh free radial basis functions

    International Nuclear Information System (INIS)

    Vrankar, L.; Turk, G.; Runovc, F.; Kansa, E.J.

    2006-01-01

    Many heat-transfer problems involve a change of phase of material due to solidification or melting. Applications include: the safety studies of nuclear reactors (molten core concrete interaction), the drilling of high ice-content soil, the storage of thermal energy, etc. These problems are often called Stefan's or moving boundary value problems. Mathematically, the interface motion is expressed implicitly in an equation for the conservation of thermal energy at the interface (Stefan's conditions). This introduces a non-linear character to the system which treats each problem somewhat uniquely. The exact solution of phase change problems is limited exclusively to the cases in which e.g. the heat transfer regions are infinite or semi-infinite one dimensional-space. Therefore, solution is obtained either by approximate analytical solution or by numerical methods. Finite-difference methods and finite-element techniques have been used extensively for numerical solution of moving boundary problems. Recently, the numerical methods have focused on the idea of using a mesh-free methodology for the numerical solution of partial differential equations based on radial basis functions. In our case we will study solid-solid transformation. The numerical solutions will be compared with analytical solutions. Actually, in our work we will examine usefulness of radial basis functions (especially multiquadric-MQ) for one-dimensional Stefan's problems. The position of the moving boundary will be simulated by moving grid method. The resultant system of RBF-PDE will be solved by affine space decomposition. (author)

  15. Ombud’s Corner: Bystanders, you can have a role too

    CERN Multimedia

    Sudeshna Datta-Cockerill

    2015-01-01

    If you find yourself repeatedly witnessing a situation of inter personal conflict or tension between other colleagues, you have a choice: you can either turn a blind eye to it or you can try to help. In the latter case, you may wish to get another perspective or some guidance before taking steps.   Stefan, Paul and Lucas work together on a challenging project. Over time, Lucas has started to notice Paul’s verbally aggressive behaviour towards Stefan: he frequently criticises him in public, cuts him short at meetings when he is trying to make his point and is known to make derogatory remarks about him behind his back. Stefan does not seem to react but the tension between them is evident and Lucas feels increasingly uncomfortable in their company. It is never easy to know whether or not to intervene in these delicate situations, and the ‘bystander effect’ - where people do nothing - tends to prevail in most workplace cultures. Bystanders hesitate to act because th...

  16. Enhancing radiative energy transfer through thermal extraction

    Directory of Open Access Journals (Sweden)

    Tan Yixuan

    2016-06-01

    Full Text Available Thermal radiation plays an increasingly important role in many emerging energy technologies, such as thermophotovoltaics, passive radiative cooling and wearable cooling clothes [1]. One of the fundamental constraints in thermal radiation is the Stefan-Boltzmann law, which limits the maximum power of far-field radiation to P0 = σT4S, where σ is the Boltzmann constant, S and T are the area and the temperature of the emitter, respectively (Fig. 1a. In order to overcome this limit, it has been shown that near-field radiations could have an energy density that is orders of magnitude greater than the Stefan-Boltzmann law [2-7]. Unfortunately, such near-field radiation transfer is spatially confined and cannot carry radiative heat to the far field. Recently, a new concept of thermal extraction was proposed [8] to enhance far-field thermal emission, which, conceptually, operates on a principle similar to oil immersion lenses and light extraction in light-emitting diodes using solid immersion lens to increase light output [62].Thermal extraction allows a blackbody to radiate more energy to the far field than the apparent limit of the Stefan-Boltzmann law without breaking the second law of thermodynamics.

  17. Thermal phenomenae in nuclear fuel rods

    International Nuclear Information System (INIS)

    Baigorria, Carlos.

    1983-12-01

    Thermal phenomenae occurring in a nuclear fuel rod under irradiation are studied. The most important parameters of either steady or transient thermal states are determined. The validity of applying the Fourier's approximation equations to these problems is also studied. A computer program TRANS is developed in order to study the transient cases. This program solves a system of coupled, non-linear partial differential equations, of parabolic type, in cylindrical coordinates with various boundary conditions. The benchmarking of the TRANS program is done by comparing its predictions with the analytical solution of some simplified transient cases. Complex transient cases such as those corresponding to characteristic reactor accidents are studied, in particular for typical pressurized heavy water reactor (PHWR) fuel rods, such as those of Atucha I. The Stefan problem emerging in the case of melting of the fuel element is solved. Qualitative differences between the classical Stefan problem, without inner sources, and that one, which includes sources are discussed. The MSA program, for solving the Stefan problem with inner sources is presented; and furthermore, it serves to predict thermal evolution, when the fuel element melts. Finally a model for fuel phase change under irradiation is developed. The model is based on the dimensional invariants of the percolation theory when applied to the connectivity of liquid spires nucleated around each fission fragment track. Suggestions for future research into the subject are also presented. (autor) [es

  18. 29th Workshop on Recent Developments in Computer Simulation Studies in Condensed Matter Physics

    International Nuclear Information System (INIS)

    2016-01-01

    Thirty years ago, because of the dramatic increase in the power and utility of computer simulations, The University of Georgia formed the first institutional unit devoted to the application of simulations in research and teaching: The Center for Simulational Physics. Then, as the international simulations community expanded further, we sensed the need for a meeting place for both experienced simulators and newcomers to discuss inventive algorithms and recent results in an environment that promoted lively discussion. As a consequence, the Center for Simulational Physics established an annual workshop series on Recent Developments in Computer Simulation Studies in Condensed Matter Physics. This year's highly interactive workshop was the 29th in the series marking our efforts to promote high quality research in simulational physics. The continued interest shown by the scientific community amply demonstrates the useful purpose that these meetings have served. The latest workshop was held at The University of Georgia from February 22-26, 2016. It served to mark the 30 th Anniversary of the founding of the Center for Simulational Physics. In addition, during this Workshop we celebrated the 60 th birthday of our esteemed colleague Prof. H.-Bernd Schuttler. Bernd has not only contributed to the understanding of strongly correlated electron system, but has made seminal contributions to systems biology through the introduction of modern methods of computational physics. These Proceedings provide a “status report” on a number of important topics. This on-line “volume” is published with the goal of timely dissemination of the material to a wider audience. This program was supported in part by the President's Venture Fund through the generous gifts of the University of Georgia Partners and other donors. We also wish to offer thanks to the Office of the Vice-President for Research, the Franklin College of Arts and Sciences, and the IBM Corporation for partial

  19. Stability and perturbations of countable Markov maps

    Science.gov (United States)

    Jordan, Thomas; Munday, Sara; Sahlsten, Tuomas

    2018-04-01

    Let T and , , be countable Markov maps such that the branches of converge pointwise to the branches of T, as . We study the stability of various quantities measuring the singularity (dimension, Hölder exponent etc) of the topological conjugacy between and T when . This is a well-understood problem for maps with finitely-many branches, and the quantities are stable for small ɛ, that is, they converge to their expected values if . For the infinite branch case their stability might be expected to fail, but we prove that even in the infinite branch case the quantity is stable under some natural regularity assumptions on and T (under which, for instance, the Hölder exponent of fails to be stable). Our assumptions apply for example in the case of Gauss map, various Lüroth maps and accelerated Manneville-Pomeau maps when varying the parameter α. For the proof we introduce a mass transportation method from the cusp that allows us to exploit thermodynamical ideas from the finite branch case. Dedicated to the memory of Bernd O Stratmann

  20. European coatings conference - Marine coatings. Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    This volume contains 13 lectures (manuscripts or powerpoint foils) with the following topics: 1. Impact of containerization on polyurethane and polyurea in marine and protective coatings (Malte Homann); 2. The application of combinatorial/high-throughput methods to the development of marine coatings (Bret Chisholm); 3. Progress and perspectives in the AMBIO (advanced nanostructured surfaces for the control of biofouling) Project (James Callow); 4. Release behaviour due to shear and pull-off of silicone coatings with a thickness gradient (James G. Kohl); 5. New liquid rheology additives for high build marine coatings (Andreas Freytag); 6. Effective corrosion protection with polyaniline, polpyrrole and polythiophene as anticorrosice additives for marine paints (Carlos Aleman); 7. Potential applications of sol gel technology for marine applications (Robert Akid); 8: Performance of biocide-free Antifouling Coatings for leisure boats (Bernd Daehne); 9. Novel biocidefree nanostructured antifouling coatings - can nano do the job? (Corne Rentrop); 10. One component high solids, VOC compliant high durability finish technology (Adrian Andrews); 11. High solid coatings - the hybrid solution (Luca Prezzi); 12. Unique organofunctional silicone resins for environmentally friendly high-performance coatings (Dieter Heldmann); 13. Silicone-alkyd paints for marine applications: from battleship-grey to green (Thomas Easton).

  1. Identification of targets and new developments in the treatment of multiple sclerosis – focus on cladribine

    Directory of Open Access Journals (Sweden)

    Clemens Warnke

    2010-06-01

    Full Text Available Clemens Warnke1, Heinz Wiendl2, Hans-Peter Hartung1, Olaf Stüve3, Bernd C Kieseier11Department of Neurology, Heinrich-Heine University Düsseldorf, Germany; 2Department of Neurology – Inflammatory Disorders of the Nervous System and Neurooncology, University of Münster, Germany; 3Department of Neurology, Dallas VA Medical Center and UT Southwestern Medical Center, Dallas, Texas, USAAbstract: Orally available disease-modifying drugs for relapsing-remitting multiple sclerosis (MS represent an unmet need for this chronic and debilitating disease. Among 5 currently investigated drugs at phase 3 clinical stage, promising efficacy data for fingolimod and oral cladribine have recently been published. However, benefits need to be weighed against the risks to define the role of these compounds within current treatment regimens. In this review, data on the efficacy of a promising compound, oral cladribine, are discussed and balanced with known and anticipated risks in a postmarketing era, and finally gives an outlook on the potential place of this drug in treatment algorithms for MS in the future.Keywords: immunosuppressant, oral drugs, risk–benefit, safety

  2. Surgical and nonsurgical treatment of total rupture of the pectoralis major muscle in athletes: update and critical appraisal

    Directory of Open Access Journals (Sweden)

    Jörn Kircher

    2010-10-01

    Full Text Available Jörn Kircher, Christoph Ziskoven, Thilo Patzer, Daniela Zaps, Bernd Bittersohl, Rüdiger KrauspeUniversity Hospital, Orthopaedic Department, Heinrich-Heine University Düsseldorf, Düsseldorf, GermanyAbstract: The complete rupture of the pectoralis major tendon is an uncommon injury but has become increasingly common among athletes in recent years. This may be due to a higher number of individuals taking part in high-impact sports and weightlifting as well as the use of anabolic substances, which can make muscles and tendons vulnerable to injury. In recent literature, there are only few recommendations to rely on conservative treatment alone, but there are a number of reports and case series recommending early surgical intervention. Comparing the results of the two treatment regimens, there is clear evidence for a superior outcome after surgical repair with better cosmesis, better functional results, regaining of muscle power, and return to sports compared with the conservative treatment. In summary, anatomic surgical repair is the treatment of choice for complete acute ruptures of the pectoralis major tendon or muscle in athletes.Keywords: pectoralis major, rupture, athlete, conservative treatment, surgical treatment, steroid, tendon, sports injury

  3. Conference 'Renewable energies, between job market growth and lack of qualified manpower - The wind energy example in France and Germany

    International Nuclear Information System (INIS)

    Lettry, Marion; Hirschl, Bernd; Kopp, Clement; Tchernia, Marianne; Nirup, Christina; Kaern, Moses; Andretto, Jean-Pierre

    2009-01-01

    The French-German office for Renewable energies (OFAEnR) organised a conference on recruitment and training requirements in the wind power industry. In the framework of this French-German exchange of experience, participants exchanged views on the actual development of the wind energy industry in both countries and provided a comprehensive overview of manpower needs and training offers. This document brings together the available presentations (slides) made during this event: 1 - Wind energy in France: a chance for the industry and the job market (Marion Lettry); 2 - economical issue and potentialities of products and services in the renewable energies sector (Bernd Hirschl); 3 - Challenge of the wind energy market: recruitment and knowledge transfer in an international market (Clement Kopp, Marianne Tchernia); 4 - Continuing training of professionals - Towards a diversification of the offer? (Christina Nirup); 5 - Who ensures the training of the future wind energy managers today? Qualification and curriculum in Germany (Moses Kaern); 6 - Technical maintenance of wind farms - Further training. How to ensure continuity? (Jean-Pierre Andretto)

  4. Gröbner bases statistics and software systems

    CERN Document Server

    2013-01-01

    The idea of the Gröbner basis first appeared in a 1927 paper by F. S. Macaulay, who succeeded in creating a combinatorial characterization of the Hilbert functions of homogeneous ideals of the polynomial ring. Later, the modern definition of the Gröbner basis was independently introduced by Heisuke Hironaka in 1964 and Bruno Buchberger in 1965. However, after the discovery of the notion of the Gröbner basis by Hironaka and Buchberger, it was not actively pursued for 20 years. A breakthrough was made in the mid-1980s by David Bayer and Michael Stillman, who created the Macaulay computer algebra system with the help of the Gröbner basis. Since then, rapid development on the Gröbner basis has been achieved by many researchers, including Bernd Sturmfels. This book serves as a standard bible of the Gröbner basis, for which the harmony of theory, application, and computation are indispensable. It provides all the fundamentals for graduate students to learn the ABC’s of the Gröbner basis, requiring no speci...

  5. Photovoltaic conference on system services

    International Nuclear Information System (INIS)

    Burges, Karsten; Freier, Karin; Vincent, Jeremy; Montigny, Marie; Engel, Bernd; Konstanciak, Wilhelm; Makdessi, Georges; Acres, Adrien; Schlaaff, Torsten; Defaix, Christophe

    2015-01-01

    The French-German office for Renewable energies (OFAEnR) organised a photovoltaic conference on system services and photovoltaic facilities. In the framework of this French-German exchange of experience, about 100 participants have analysed and discussed the regulatory, technical and economical context of system services, their evolution and implementation in the framework of an accelerated development of photovoltaic conversion in both countries. This document brings together the available presentations (slides) made during this event: 1 - Technical Introduction to system services: principles, actors and perspectives (Karsten Burges); 2 - Legal guidelines of EEG (Renewable energy Sources Act) and the System Stability Ordinance as well as future measures for PV grid integration (Karin Freier); 3 - evolution of ancillary services regulation; opening the possibility for new market players to participate in maintaining the system stability (Jeremy Vincent, Marie Montigny); 4 - Paradigm shift for ancillary services: PV as a new stakeholder (Bernd Engel); 5 - Challenges of RES integration (Wilhelm Konstanciak 6 - System services supplied by PV inverters, solutions for frequency and active/reactive power control at the injection point (Georges Makdessi); 7 - Grid disturbance abatement and voltage stability control by monitoring local scale PV production (Adrien Acres); 8 - Flexibly Adaptable Power Plant Controller - The Answer to Various Grid Requirements (Torsten Schlaaff); 9 - ENR-pool project: What kind of business model for ancillary services by PV power plants? (Christophe Defaix)

  6. Closing remarks at the symposium in honour of Daniel Bellus. Pharmacenter, University of Basel, February 6, 2009.

    Science.gov (United States)

    Ganter, Camille

    2010-01-01

    In the Closing Remarks at the Symposium on 'Frontiers in Bioorganic Chemistry' (Friday, February 6, 2009, Pharmacenter, University of Basel) in honour of Daniel Bellus, his arrival in Zürich in fall 1967 and especially his postdoctoral work at the Laboratorium für Organische Chemie at the Eidgenössische Technische Hochschule (ETH) in Zürich throughout the year 1967/68 were mentioned. In his most remarkable paper (published in 1969 in Helv. Chim. Acta), the photochemistry of the alpha,beta-unsaturated cyclohexenones O-acetyl-testosterone and 10-methy-delta1,9-octalon-(2) is described in detail. Change of solvent leads to lowering or increasing of the n,pi*- and (pi,pi*)-triplet energies, resulting in a crossing of the two energy levels. Personal remarks on Daniel Bellus and warmest thanks to him, to Profs. Beat Ernst and Bernd Giese (the organizers of the symposium) and to all the speakers concluded this most special event.

  7. Strange Particles and Heavy Ion Physics

    Energy Technology Data Exchange (ETDEWEB)

    Bassalleck, Bernd [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Physics and Astronomy; Fields, Douglas [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Physics and Astronomy

    2016-04-28

    This very long-running grant has supported many experiments in nuclear and particle physics by a group from the University of New Mexico. The gamut of these experiments runs from many aspects of Strangeness Nuclear Physics, to rare Kaon decays, to searches for exotic Hadrons such as Pentaquark or H-Dibaryon, and finally to Spin Physics within the PHENIX collaboration at RHIC. These experiments were performed at a number of laboratories worldwide: first and foremost at Brookhaven National Lab (BNL), but also at CERN, KEK, and most recently at J-PARC. In this Final Technical Report we summarize progress and achievements for this award since our last Progress Report, i.e. for the period of fall 2013 until the award’s termination on November 30, 2015. The report consists of two parts, representing our two most recent experimental efforts, participation in the Nucleon Spin Physics program of the PHENIX experiment at RHIC, the Relativistic Heavy Ion Collider at BNL – Task 1, led by Douglas Fields; and participation in several Strangeness Nuclear Physics experiments at J-PARC, the Japan Proton Accelerator Research Center in Tokai-mura, Japan – Task 2, led by Bernd Bassalleck.

  8. Smart Energy 2012. How smart is the way towards the turnaround in the energy policy; Smart Energy 2012. Wie smart ist der Weg zur Energiewende?

    Energy Technology Data Exchange (ETDEWEB)

    Grossmann, Uwe; Kunold, Ingo (eds.)

    2012-07-01

    The contribution under consideration contains fifteen contributions of well-known authors from commercial enterprises, public institutions and universities on smart energy: (1) Smart grids, but surely (Claudia Eckert); (2) Requirements concerning the further development of data protection and data security as part of the technological change (Reinhold Harnisch); (3) Standardization in the smart grid (Harald Orlamuender); (4) IEC 61850 - The standard for energy automation (Georg Harnischmacher); (5) Smart City, the intelligent grid in the city (Michael Laskowski); (6) IKT is a basis for a real smart power distribution system (Justus Bross); (7) Power transparency and optimized building optimization by means of a holistic automation concepts (Joerg Wollert); (8) Distributed architecture for a balancing aggregation of consumption and generation of power in private households (Kilian Hemmeboehle); (9) Development of an e-energy market place and first experiences from the field test in the E-DeMa project (Bernd Werner); (10) Smart metering rollout pilot ''30,000er'' (Axel Lauterkorn); (11) Experiences with the connexion and communication to smart meters in the project eTelligence (Guenter Pistoor); (12) Smart Phoenix - Intelligent energy networks in Dortmund (Roland Brueggemann); (13) Smart planning (C. Engels); Intelligent house control by means of smart metering (Sabine Wieland); (14) Dynamic billing of energy and value-added service in the networked home (Frank C. Bormann).

  9. The XWHO directory retires

    CERN Multimedia

    CERN Bulletin

    2011-01-01

    On 11 May a new web-based phonebook will take over from the 16-year old XWHO directory. It will provide access to basic contact information for people and services at CERN. A user-friendly interface will allow you to look for people and services using criteria such as first or last name, organisational unit and phone number. All requests submitted to the retired XWHO directory will be redirected to the new phonebook.   The new CERN Phonebook's user interface. CERN’s first electronic phonebook was created in 1995. The XWHO directory was first presented in July that year in a CERN Computer Newsletter (CNL) article entitled “Migrating the access to central directory services” by Miguel Marquina and Bernd Pollermann. Since then, it has been used by thousands of people at CERN and around the world looking for contact details of other members of the Organization. The XWHO directory is now retiring and is to be replaced by the new web-based CERN Phonebook. For several month...

  10. Literaturübersicht zur aktiven Medienarbeit in der pädagogischen Praxis

    Directory of Open Access Journals (Sweden)

    Katharina Sontag

    2014-09-01

    Full Text Available Katharina Sontags Beitrag setzt mit Bernd Schorbs Erkenntnis ein, dass es angesichts der mediatisierten Wissens- und Informationsgesellschaft nicht mehr nur um die Rezeption von medialen Inhalten geht, sondern auch um deren aktive Nutzung, weshalb schon aus diesem Grund die Option für eine handlungsorientierte bzw. praxeologische Medienpädagogik nahe liegt. Dabei geht es neben der partizipatorischen Einbeziehung der SchülerInnen auch und vor allem um ihr selbständiges und verantwortliches Handeln. Im Sinne Dieter Baackes werden dabei die Lebenswelten der Lernenden nachdrücklich als Medienwelten begriffen. Die aktive und produktive Nutzung der Medien stellt insofern einen ganzheitlichen Prozess der Weltaneignung dar, die auch im Blick auf eine demokratische Mediengesellschaft von großer Bedeutung ist. Dabei stellt Sontag im allgemeinen Rahmen der handlungsorientierten Medienpädagogik zehn exemplarische Werke bzw. Beiträge vor, die für die diesbezüglichen Diskussionen grundlegend sind.

  11. Illusionists

    Directory of Open Access Journals (Sweden)

    N.J Wade

    2014-08-01

    Full Text Available Illusions have been displayed in art for millennia but they were not addressed seriously by visual science until the mid-nineteenth century when Johann Joseph Oppel referred to the small spatial distortions as ‘geometrical optical illusions’. Many of the illusion figures described thereafter bear the names of those who illustrated them. Original forms of the illusions were shown together with illusory portrayals of those who described them. These included (in chronological sequence: Jan Evangelista Purkyně, Louis Albert Necker, Michel Eugène Chevreul, Adolf Fick, Johann Karl Friedrich Zöllner, Johann Christian Poggendorff, Karl Ewald Konstantin Hering, August Kundt, Joseph-Rémi-Léopold Delbæuf, Ernst Mach, Hermann Ludwig Ferdinand Helmholtz, Ludimar Hermann, Wilhelm von Bezold, Henri Beaunis, Franz Carl Müller-Lyer, Theodor Lipps, Armand Thiéry, Wilhelm Maximilian Wundt, Hugo Münsterberg, Friedrich Schumann, Hermann Ebbinghaus, Edward Bradford Titchener, Joseph Jastrow, James Fraser, Mario Ponzo, Edgar Rubin, Matthew Luckiesh, Friedrich Sander, Walter Ehrenstein, Adelbert Ames, Richard Gregory, Gaetano Kanizsa, Michael White, Roger Shepard, and Bernd Lingelbach.

  12. Basal melting driven by turbulent thermal convection

    Science.gov (United States)

    Rabbanipour Esfahani, Babak; Hirata, Silvia C.; Berti, Stefano; Calzavarini, Enrico

    2018-05-01

    Melting and, conversely, solidification processes in the presence of convection are key to many geophysical problems. An essential question related to these phenomena concerns the estimation of the (time-evolving) melting rate, which is tightly connected to the turbulent convective dynamics in the bulk of the melt fluid and the heat transfer at the liquid-solid interface. In this work, we consider a convective-melting model, constructed as a generalization of the Rayleigh-Bénard system, accounting for the basal melting of a solid. As the change of phase proceeds, a fluid layer grows at the heated bottom of the system and eventually reaches a turbulent convection state. By means of extensive lattice-Boltzmann numerical simulations employing an enthalpy formulation of the governing equations, we explore the model dynamics in two- and three-dimensional configurations. The focus of the analysis is on the scaling of global quantities like the heat flux and the kinetic energy with the Rayleigh number, as well as on the interface morphology and the effects of space dimensionality. Independently of dimensionality, we find that the convective-melting system behavior shares strong resemblances with that of the Rayleigh-Bénard one, and that the heat flux is only weakly enhanced with respect to that case. Such similarities are understood, at least to some extent, considering the resulting slow motion of the melting front (with respect to the turbulent fluid velocity fluctuations) and its generally little roughness (compared to the height of the fluid layer). Varying the Stefan number, accounting for the thermodynamical properties of the material, also seems to have only a mild effect, which implies the possibility of extrapolating results in numerically delicate low-Stefan setups from more convenient high-Stefan ones. Finally, we discuss the implications of our findings for the geophysically relevant problem of modeling Arctic ice melt ponds.

  13. Sorption characteristics of honeycomb type sorption element composed of organic sorbent; Yukikei shuchakuzai wo tofushita honeycomb jo shuchaku element nio shuchaku tokuse

    Energy Technology Data Exchange (ETDEWEB)

    Inaba, H.; Horibe, A. [Okayama University, Okayama (Japan); Kida, T.; Kaneda, M. [Japan Exlan Co. Ltd., Osaka (Japan)

    2000-12-25

    This paper has dealt with the sorption characteristics of honeycomb shape type sorbent element composed of new organic sorbent which was composed of the bridged complex of sodium polyacrylate. The transient experiments in which the moist air was passed into the honeycomb type sorbent element were conducted under various conditions of air velocity, temperature, relative-humidity and honeycomb length. As a result, the effective mass transfer coefficient of the organic sorbent sorbing the water-vapor was non-dimensionalized as a function of Reynolds number, modified Stefan number and non-dimensional honeycomb length. (author)

  14. WIMS Library updating

    International Nuclear Information System (INIS)

    Ravnik, M.; Trkov, A.; Holubar, A.

    1992-01-01

    At the end of 1990 the WIMS Library Update Project (WLUP) has been initiated at the International Atomic Energy Agency. The project was organized as an international research project, coordinated at the J. Stefan Institute. Up to now, 22 laboratories from 19 countries joined the project. Phase 1 of the project, which included WIMS input optimization for five experimental benchmark lattices, has been completed. The work presented in this paper describes also the results of Phase 2 of the Project, in which the cross sections based on ENDF/B-IV evaluated nuclear data library have been processed. (author) [sl

  15. Adsorption analysis equilibria and kinetics

    CERN Document Server

    Do, Duong D

    1998-01-01

    This book covers topics of equilibria and kinetics of adsorption in porous media. Fundamental equilibria and kinetics are dealt with for homogeneous as well as heterogeneous particles. Five chapters of the book deal with equilibria and eight chapters deal with kinetics. Single component as well as multicomponent systems are discussed. In kinetics analysis, we deal with the various mass transport processes and their interactions inside a porous particle. Conventional approaches as well as the new approach using Maxwell-Stefan equations are presented. Various methods to measure diffusivity, such

  16. A numerical approach to the study of the perpetual case of Ameripean options

    Science.gov (United States)

    Kandilarov, J.

    2013-12-01

    A new numerical method for solving the perpetual case of Ameripean options is proposed. The Ameripean delayed exercise model analyzes a new class of option model with American and ParAsian features. The model is mathematically described by ultraparabolic and parabolic PDE's which are valid over different regions. The perpetual case leads to the parabolic-elliptic two-phase Stefan problem with free internal boundary. To deal with the obtained nonlinear problem an iterative numerical method is proposed. Numerical analysis are presented and discussed.

  17. Experimental Study and a Mathematical Model of the Processes in Frozen Soil Under a Reservoir with a Hot Heat-Transfer Agent

    Science.gov (United States)

    Kislitsyn, A. A.; Shastunova, U. Yu.; Yanbikova, Yu. F.

    2018-05-01

    On an experimental setup, the authors have measured temperature fields in frozen soil during the filling of a reservoir with hot heat-transfer agent (oil), and also the change in the shape and position of the front of ice melting (isotherms T = 0°C) with time. The approximate solution of a two-dimensional Stefan problem on thawing of frozen soil has been given; it has been shown that satisfactory agreement with experimental results can only be obtained with account taken of the convective transfer of heat due to the water motion in the region of thawed soil.

  18. Hysteresis and Phase Transitions in a Lattice Regularization of an Ill-Posed Forward-Backward Diffusion Equation

    Science.gov (United States)

    Helmers, Michael; Herrmann, Michael

    2018-03-01

    We consider a lattice regularization for an ill-posed diffusion equation with a trilinear constitutive law and study the dynamics of phase interfaces in the parabolic scaling limit. Our main result guarantees for a certain class of single-interface initial data that the lattice solutions satisfy asymptotically a free boundary problem with a hysteretic Stefan condition. The key challenge in the proof is to control the microscopic fluctuations that are inevitably produced by the backward diffusion when a particle passes the spinodal region.

  19. Browse Author Index

    African Journals Online (AJOL)

    Items 1 - 50 of 66 ... A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All. J. J. Al-Rehaily, A. J. Anderegg, Robert · J. Budenberg, William · J. Coville, Neil · J. Coville*, Neil · J. Edet, Ekanem · J. Hodgson, Derek · J. Hodgson, Derek · J. Hu, Y. J. Janusz, Stefan · J. Jones, Christopher · J. Kiplimo, Joyce · J. López-Muñoz, M.

  20. Reviews of recent publications

    Directory of Open Access Journals (Sweden)

    2005-01-01

    Full Text Available Chanan, Michael. Cuban Cinema David William Foster Izenberg, Gerald N. Modernism and Masculinity: Mann, Wedekind, Kandisnky through World War I. Aaron J. Cohen Jonsson, Stefan. Subject Without Nation: Robert Musil and the History of Modern Identity. Post-Contemporary Interventions. Albrecht Classen Kaiser, David Aram. Romanticism, Aesthetics and Nationalism. Cambridge Studies in Romanticism 34. Catherine Grimm Lopez de Martinez, Adelaida and Harriet Turner. The Cambridge Companion to the Spanish Novel: From 1600 to the Present. Toni Dorca McCulloh, Mark R. Understanding W.G. Sebald. Peter C. Pfeiffer Peterson, Dale E. Up From Bondage: The Literatures of Russian and African American Soul. Kathleen M. Ahren

  1. H. Beale et al., Cases, Materials and Texts on Contract Law, 2nd ed. (Oxford: Hart Publishing, 2010; and T. K. Graziano, Comparative Contract Law: Cases, Materials and Exercises (Basingstoke: Palgrave MacMillan, 2009

    Directory of Open Access Journals (Sweden)

    Rachael L. Johnstone

    2011-03-01

    Full Text Available view essay of the following books on comparative law: Hugh Beale, Bénédicte Fauvarque-Cosson, Jacobien Rutgers, Denis Tallon and Stefan Vogenauer, Cases, Materials and Text on Contract Law, 2nd ed. (Ius Commune Casebooks for the Common Law of Europe No. 6 (Oxford, United Kingdom: Hart Publishing, 2010 lxxxiv + 1358 pp. paper. 38.95 GBP; and Thomas Kadner Graziano, Comparative Contract Law: Cases, Materials and Exercises (Basingstoke, United Kingdom: Palgrage MacMillan, 2009 xi + 510 pp. paper. 34.99 GBP

  2. Wasale, trybutariusze, sojusznicy. ­Charakter relacji państw bałkańskich z Turcją osmańską w XIV wieku

    Directory of Open Access Journals (Sweden)

    Ilona Czamańska

    2015-08-01

    4. Entry into close, family relations with the ruling sultan meant usually a close political and military cooperation. Greek, Bulgarian and Serbian wives of the sultans had the right to remain in the Christian faith and often exerted a strong political influence. The support and protection of the closest relatives of the wife was fulfilled by the Turkish rulers. Thanks to it, for example Serbia of Stefan Lazarević was essentially strengthened, becoming at the same time the most serious support of Bajezid I in the Balkans.

  3. Geophysical characterizations of fluid flow and gas-hydrate systems of the NW-Svalbard and SW-Barents Sea margins

    OpenAIRE

    Rajan, Anupama

    2013-01-01

    Papers 2, and 4 of this thesis are not available in Munin: 2. Rajan, A., J. Mienert, and S. Bünz: 'Acoustic evidence for a gas migration and release system in Arctic glaciated continental margins offshore NW-Svalbard', Marine and Petroleum Geology (2012), vol.32(1):36-49. Available at http://dx.doi.org/10.1016/j.marpetgeo.2011.12.008 3. Anupama Rajan, Stefan Bünz, Jürgen Mienert and. Andrew J. Smith: 'Tilted bottomsimulating reflectors (TBSRs) provide evidence for active fluid flow from deep ...

  4. Fast Ignition Thermonuclear Fusion: Enhancement of the Pellet Gain by the Colossal-Magnetic-Field Shells

    Science.gov (United States)

    Stefan, V. Alexander

    2013-10-01

    The fast ignition fusion pellet gain can be enhanced by a laser generated B-field shell. The B-field shell, (similar to Earth's B-field, but with the alternating B-poles), follows the pellet compression in a frozen-in B-field regime. A properly designed laser-pellet coupling can lead to the generation of a B-field shell, (up to 100 MG), which inhibits electron thermal transport and confines the alpha-particles. In principle, a pellet gain of few-100s can be achieved in this manner. Supported in part by Nikola Tesla Labs, Stefan University, 1010 Pearl, La Jolla, CA 92038-1007.

  5. Stem Cell Physics. Multiple-Laser-Beam Treatment of Parkinson's Disease

    Science.gov (United States)

    Stefan, V.

    2013-03-01

    A novel method for the treatment of Parkinson's disease is proposed. Pluripotent stem cells are laser cultured, using ultrashort wavelength, (around 0.1 micron-ultraviolet radiation-with intensities of a few mW/cm2) , multiple laser beams.[2] The multiple-energy laser photons[3] interact with the neuron DNA molecules to be cloned. The laser created dopaminergic substantia nigra neurons can be, (theoretically), laser transplanted, (a higher focusing precision as compared to a syringe method), into the striatum or substantia nigra regions of the brain, or both. Supported by Nikola Tesla Labs, Stefan University.

  6. The Brain Physics: Multi Laser Beam Interaction with the Brain Topions (the Brain Neurocenters)

    Science.gov (United States)

    Stefan, V. Alexander

    2015-03-01

    A novel method for the treatment of the neurological diseases is proposed. The multiple-energy laser photons (the blue scanning photons and ultraviolet focusing photons) interact with the specific DNA molecules within the topion (such as Parkinson's and Alzheimer's brain topion) via the matching of laser frequency with the oscillation eigen-frequency of a particular molecule within the DNA. In this way, the corrupt molecules (the structure of molecules) can be manipulated so as to treat (eliminate) the neurological disease. Supported by Nikola Tesla Labs, Stefan University.

  7. Proton Beam Fast Ignition Fusion: Synergy of Weibel and Rayleigh-Taylor Instabilities

    Science.gov (United States)

    Stefan, V. Alexander

    2011-04-01

    The proton beam generation and focusing in fast ignition inertial confinement fusion is studied. The spatial and energy spread of the proton beam generated in a laser-solid interaction is increased due to the synergy of Weibel and Rayleigh-Taylor instabilities. The focal spot radius can reach 100 μm, which is nearly an order of magnitude larger than the optimal value. The energy spread decreases the beam deposition energy in the focal spot. Under these conditions, ignition of a precompressed DT fuel is achieved with the beam powers much higher than the values presently in consideration. Work supported in part by NIKOLA TESLA Laboratories (Stefan University), La Jolla, CA.

  8. Public opinion about nuclear energy. Year 2007 poll

    International Nuclear Information System (INIS)

    Istenic, R.; Jencic, I.

    2007-01-01

    Nuclear Training Centre Milan Copic (Izobrazevalni center za jedrsko tehnologijo - ICJT) at Jozef Stefan Institute in Ljubljana incorporates the Information Centre for general public. Most of the visitors are youngsters and almost one half of every generation of schoolchildren in Slovenia is informed on nuclear energy by live lectures, exhibition, publications and laboratory demonstrations. About 1000 visitors are polled every year since 1993 to measure the opinion about nuclear power and get a feed-back for our activities. Continued operation of NPP Krsko is supported by 69% of youngsters (negative trend from the last year's 76%), while opposition remains low. (author)

  9. Comparison of Transport Characteristics and Textural Properties of Porous Material; the Role of Pore Sizes and Their Distributions

    Czech Academy of Sciences Publication Activity Database

    Hejtmánek, Vladimír; Schneider, Petr; Soukup, Karel; Šolcová, Olga

    2006-01-01

    Roč. 160, - (2006), s. 1-8 ISSN 0167-2991. [International Symposium on the Characterisation of Porous Solids COPS VII /7./. Aix en Provance, 26.05.2005-28.05.2005] R&D Projects: GA ČR(CZ) GA104/04/0963; GA ČR GD203/03/H140; GA AV ČR IAA4072404 Institutional research plan: CEZ:AV0Z40720504 Keywords : counter-current gas diffusion * transport parameters * Maxwell-Stefan equation Subject RIV: CA - Inorganic Chemistry Impact factor: 0.307, year: 2005

  10. Influencia de la transferencia de masa y calor en la destilación de mezclas multicomponentes

    OpenAIRE

    Gutiérrez Hernández, Juan Pablo; Guapacha Martínez, Jorge Ariel

    2005-01-01

    En el presente trabajo se plantean los modelos de Fick generalizado y de Maxwell Stefan para la transferencia de masa multicomponente y se realiza un análisis comparativo entre ambos. Se estudia la transferencia simultánea de masa y energía en varios sistemas multicomponentes reactivos y se aplica el modelo de película en la interfase líquido-vapor asumiendo que la reacción solo ocurre en la fase líquida. Se presentan los modelos de equilibrio y de no-equilibrio aplicados a una columna de des...

  11. Time in powers of ten natural phenomena and their timescales

    CERN Document Server

    't Hooft, Gerard

    2014-01-01

    In this richly illustrated book, Nobel Laureate Gerard 't Hooft and Theoretical Physicist Stefan Vandoren describe the enormous diversity of natural phenomena that take place at different time scales. In the tradition of the bestseller Powers of Ten , the authors zoom in and out in time, each step with a factor of ten. Starting from one second, time scales are enlarged until processes are reached that take much longer than the age of the universe. After the largest possible eternities, the reader is treated to the shortest and fastest phenomena known. Then the authors increase with powers of t

  12. Monoclonal antibodies and Fc fragments for treating solid tumors

    Directory of Open Access Journals (Sweden)

    Eisenbeis AM

    2012-01-01

    Full Text Available Andrea M Eisenbeis, Stefan J GrauDepartment of Neurosurgery, University Hospital of Cologne, Cologne, GermanyAbstract: Advances in biotechnology, better understanding of pathophysiological processes, as well as the identification of an increasing number of molecular markers have facilitated the use of monoclonal antibodies and Fc fragments in various fields in medicine. In this context, a rapidly growing number of these substances have also emerged in the field of oncology. This review will summarize the currently approved monoclonal antibodies used for the treatment of solid tumors with a focus on their clinical application, biological background, and currently ongoing trials.Keywords: targeted therapy, monoclonal antibodies, cancer, biological therapy

  13. Introductory speeches

    International Nuclear Information System (INIS)

    2001-01-01

    This CD is multimedia presentation of programme safety upgrading of Bohunice V1 NPP. This chapter consist of introductory commentary and 4 introductory speeches (video records): (1) Introductory speech of Vincent Pillar, Board chairman and director general of Slovak electric, Plc. (SE); (2) Introductory speech of Stefan Schmidt, director of SE - Bohunice Nuclear power plants; (3) Introductory speech of Jan Korec, Board chairman and director general of VUJE Trnava, Inc. - Engineering, Design and Research Organisation, Trnava; Introductory speech of Dietrich Kuschel, Senior vice-president of FRAMATOME ANP Project and Engineering

  14. Dimensional analysis and group theory in astrophysics

    CERN Document Server

    Kurth, Rudolf

    2013-01-01

    Dimensional Analysis and Group Theory in Astrophysics describes how dimensional analysis, refined by mathematical regularity hypotheses, can be applied to purely qualitative physical assumptions. The book focuses on the continuous spectral of the stars and the mass-luminosity relationship. The text discusses the technique of dimensional analysis, covering both relativistic phenomena and the stellar systems. The book also explains the fundamental conclusion of dimensional analysis, wherein the unknown functions shall be given certain specified forms. The Wien and Stefan-Boltzmann Laws can be si

  15. 2013 CIME Course Vector-valued Partial Differential Equations and Applications

    CERN Document Server

    Marcellini, Paolo

    2017-01-01

    Collating different aspects of Vector-valued Partial Differential Equations and Applications, this volume is based on the 2013 CIME Course with the same name which took place at Cetraro, Italy, under the scientific direction of John Ball and Paolo Marcellini. It contains the following contributions: The pullback equation (Bernard Dacorogna), The stability of the isoperimetric inequality (Nicola Fusco), Mathematical problems in thin elastic sheets: scaling limits, packing, crumpling and singularities (Stefan Müller), and Aspects of PDEs related to fluid flows (Vladimir Sverák). These lectures are addressed to graduate students and researchers in the field.

  16. Applied geology in the research of Karol Bohdanowicz and his Polish graduates in Siberia at the turn of the 20th century (in Polish

    Directory of Open Access Journals (Sweden)

    Andrzej J. Wójcik

    2016-11-01

    Full Text Available Research in the field of applied geology (geology of deposits, engineering geology, hydrogeology at the turn of the 20th century in Siberia, was conducted by the graduates of the Institute of Mining led by Karol Bohdanowicz. The team included, among others, Stefan Czarnocki and Stanisław Doktorowicz-Hrebnicki. Their activity in Siberia became a proof that the so-called “Bohdanowicz’s school” existed and the results of their research have earned their place in the science and have become the basis for developing the mining of mineral resources.

  17. Asymptotic solution of the non-isothermal Cahn-Hilliard system

    International Nuclear Information System (INIS)

    Omel'yanov, G.A.

    1995-05-01

    The non-isothermal Cahn-Hillard questions with a small parameter in the n-dimensional case (n = 2.3) are considered. The small parameter is proportional both to the relaxation time and to the linear scale of transition zone, so the large time process is examined. The asymptotic solution describing the free interface dynamics is constructed. As the small parameter tends to zero, the limiting solution satisfies the modified Stefan problem with corrected Gibbs-Thomson law. The justification of the asymptotic solution is proved. (author). 26 refs

  18. Recent improvements in program packages SHUFFLE and FAR

    International Nuclear Information System (INIS)

    Slavic, S.; Kromar, M.; Zefran, B.

    1996-01-01

    Program packages SHUFFLE and FAR were developed at 'Jozef Stefan' Institute to monitor all changes of fuel assemblies during a nuclear power plant operation. Both packages were written in the Clipper language which is suitable for data base applications and allows straightforward communications with other available data bases. Packages currently run on PC machines under DOS operating system. Both packages are in routine use at a nuclear power plant Krsko, but they can be applied to any PWR power plant without significant modification. Experiences obtained from the utility in past few years triggered several improvements and new features. (author)

  19. Part Twelve. The Voyages of John Matthias

    OpenAIRE

    Printz-Påhlson, Göran

    2013-01-01

    In August 1974, when the Watergate scandal was moving into its last phase, the American poet John Matthias returned to his home, in South Bend, Indiana, after a year’s stay in England, traveling on the Polish ocean-liner Stefan Bathory. In June of 1976 he set out to sea again, this time on a Russian ship, the Mikhail Lermontov, in order to spend another year in England, as a Visiting Fellow in Poetry in Clare Hall, Cambridge. The voyages took approximately nine days each, and on both ships he...

  20. Academic Training Lecture - Regular Programme

    CERN Multimedia

    PH Department

    2011-01-01

    Regular Lecture Programme 9 May 2011 ACT Lectures on Detectors - Inner Tracking Detectors by Pippa Wells (CERN) 10 May 2011 ACT Lectures on Detectors - Calorimeters (2/5) by Philippe Bloch (CERN) 11 May 2011 ACT Lectures on Detectors - Muon systems (3/5) by Kerstin Hoepfner (RWTH Aachen) 12 May 2011 ACT Lectures on Detectors - Particle Identification and Forward Detectors by Peter Krizan (University of Ljubljana and J. Stefan Institute, Ljubljana, Slovenia) 13 May 2011 ACT Lectures on Detectors - Trigger and Data Acquisition (5/5) by Dr. Brian Petersen (CERN) from 11:00 to 12:00 at CERN ( Bldg. 222-R-001 - Filtration Plant )

  1. Symposium KK: Structure-Property Relationships in Biomineralized and Bio-mimetic Composites

    Science.gov (United States)

    2010-04-06

    Preventive and Restorative Dental Sciences, UCSF, San Francisco, California. 4:45 PM KK2.8 Damage and Crack Evolution in Mammalian Enamel James Jin...Technology, Graz, Austria. 9:45AMKK6.S AFM and PFM measurements of Enamel in order to Determine the Crack Tip Toughness and Cohesive Zone of Enamel Gerold...11:00 AM KK9.7 Enamel Matrix Guided Growth of Apatite Vuk Uskokovic1. Li Zhu2, Wu Li2 and Stefan Habelitz1; ’Department of Preventive and

  2. Partnership between the school of nursing and the hospital: supervisors' perspectives

    OpenAIRE

    Martins, Cristina Araújo; Macedo, Ana Paula; Araújo, Odete; Oliveira, Cláudia; Braga, Maria de Fátima Dias; Gomes, Lisa Alves; Silva, Maria Augusta; Rosário, Rafaela

    2016-01-01

    Table of contents S1 Health literacy and health education in adolescence Catarina Cardoso Tom?s S2 The effect of a walking program on the quality of life and well-being of people with schizophrenia Emanuel Oliveira, D. Sousa, M. Uba-Chupel, G. Furtado, C. Rocha, A. Teixeira, P. Ferreira S3 Diagnosis and innovative treatments - the way to a better medical practice Celeste Alves S4 Simulation-based learning and how it is a high contribution Stefan Gisin S5 Formative research about acceptability...

  3. On the radiological consequences near and far away from the catastrophically damaged Chernobyl Nuclear Power Plant

    International Nuclear Information System (INIS)

    Susnik, J.

    1992-01-01

    The influence of the radioactive cloud rise at the site on the potential expected post accidental doses, using the WASH-1400 PWR-1A scenario and the CRAC 2 model, was studied. The UNSCEAR 1988 was used to estimate the activity of the cloud that contaminated Slovenia and neighbouring areas. The contamination levels at the J.Stefan Institute were used for comparison (the match was surprisingly good). Some of the expected doses due to early irradiation from the cloud, ground, inhalation and ingestion are also shown. Dose reduction possibilities were estimated. (author) [sl

  4. Contribution of Nuclear Training Centre in Ljubljana to Training and Information in the Area of Nuclear Technology

    International Nuclear Information System (INIS)

    Stritar, A.

    1998-01-01

    Nuclear Training Centre in Ljubljana ia a part of the Jozef Stefan Institute. The paper presents its main activities, which consist of training for NPP Krsko staff, training in the area of radiation protection, organization of international training courses and public information. NPP Krsko personnel obtains initial technical training at our training centre. We are also offering training courses and licensing for people working with radioactive substances in medicine, industry and science. We are internationally recognized training centre for organization of regional and interregional courses and meeting. Our fourth activity is public information. We are visited by around 7000 students per year and answer to every question about nuclear energy. (author)

  5. Lectures given at the 3rd Session of the Centro Internazionale Matematico Estivo (C.I.M.E.)

    CERN Document Server

    1994-01-01

    1) Phase Transitions, represented by generalizations of the classical Stefan problem. This is studied by Kenmochi and Rodrigues by means of variational techniques. 2) Hysteresis Phenomena. Some alloys exhibit shape memory effects, corresponding to a stress-strain relation which strongly depends on temperature; mathematical physical aspects are treated in Müller's paper. In a general framework, hysteresis can be described by means of hysteresis operators in Banach spaces of time dependent functions; their properties are studied by Brokate. 3) Numerical analysis. Several models of the phenomena above can be formulated in terms of nonlinear parabolic equations. Here Verdi deals with the most updated approximation techniques.

  6. Involutive co-distributions preserved by transitive families of vector fields

    International Nuclear Information System (INIS)

    Ayala Bravo, V.

    1994-06-01

    This paper leads with integrability conditions of involutive co-distributions defined on co-tangent bundle of a differentiable manifold M. Via Frobenius's integrability theorem, the analysis is aimed at the search for conditions so that this type of co-distributions preserved by transitive families of vector fields in M. We rely on the work of Lobry, Sussmann, Matsuda and Stefan. The type of situation studies comes up naturally in weak-observability problems and weakly-minimal realizations of arbitrary control systems. (author). 10 refs

  7. Physics of the Brain: Interaction of the Optical-Fiber-Guided Multi-Ultraviolet-Photon Beams with the Epilepsy Topion, (the Seizure Onset Area)

    Science.gov (United States)

    Stefan, V. Alexander

    A novel method for the possible prevention of epileptic seizures is proposed, based on the multi-ultraviolet-photon beam interaction with the epilepsy topion, (nonlinear coupling of an ultra high frequency mode to the brain beta phonons). It is hypothesized that epilepsy is a chaotic-dynamics phenomenon: small electrical changes in the epilepsy-topion lead, (within the 10s of milliseconds), to the onset of chaos, (seizure--excessive electrical discharge), and subsequent cascading into adjacent areas. The ultraviolet photons may control the imbalance of sodium and potassium ions and, consequently, may prove to be efficient in the prevention of epileptic seizures. Supported by Nikola Tesla Labs, Stefan University.

  8. International validation of safety analyses for nuclear power plants; Mednarodno preverjanje varnostnih analiz za jedrske elektrane

    Energy Technology Data Exchange (ETDEWEB)

    Gregoric, N; Mavko, B [Institut ' Jozef Stefan' Ljubljana (Yugoslavia)

    1988-07-01

    Paper describes the participation of 'J.Stefan' Institute in international standard problems for validation of modeling and programs for safety analysis. Listed are main international experimental facilities for collecting data basic for understanding of physical phenomena, code development and validation of modelling and programs. Since the results of international standard problem analyses are published in a joint final report, it is simple to asses the conformance of the results of a particular group with the experiment. Good results from three international exercises done so far, have encouraged the group to currently participate in OECD-ISP-22 which is a model of the Italian three loop PWR. (author)

  9. WIS Implementation Study Report. Volume 2. Resumes.

    Science.gov (United States)

    1983-10-01

    Dr. Robert E. 55 Luenberger, Prof. David G. 58 Magliato, Mr. Frank J. 61 McQuillan, Dr. John M. 62 Miller, Mr. Richard H. 63 Power, Dr. Daniel J. 64... Shrier , Dr. Stefan 94 Slusarczuk, Dr. Marko M.G. 96 Smeaton, Mr. Roger 99 Sykes, Mr. Wendell G. 100 Trocki, Mr. Martin C. 102 Tse, Prof. Edison T.S...Mark and David Wilczynski to be presented at SOFTFAIR 󈨗, Washington DC, July 26.28. "The CUE/Consul Interface: An Integrated Interaction Environment

  10. Public opinion about nuclear energy. Year 2006 poll

    International Nuclear Information System (INIS)

    Istenic, R.; Jencic, I.; Tkavc, M.

    2006-01-01

    Public information, one of the important activities of the Nuclear Training Centre Milan Copic at the Jozef Stefan Institute in Ljubljana, is focused on youngsters. Almost one half of every generation of schoolchildren in Slovenia is informed on nuclear energy by live lectures, exhibition, publications and laboratory demonstrations. To measure the opinion of youngsters about nuclear power and get a feed-back for our activities about 1000 youngsters are polled every year since 1993 using the same basic set of questions. Continued operation of the NPP Krsko is supported by 76% of youngsters in Slovenia (slightly positive trend from the last year's 71%). Opposition to NPP Krsko operation remains low. (author)

  11. Mechanics of the Separating Surface for a Two-Phase Co-current Flow in a Porous Medium

    DEFF Research Database (Denmark)

    Shapiro, Alexander A.

    2016-01-01

    of the extended Maxwell-Stefan formalism, as in our previous paper (Shapiro 2015). Force balances are formulated in the directions parallel and orthogonal to the flow. A complete system of the flow equations, generalizing the traditional Buckley–Leverett and Rappoport–Leas system, is derived. Sample computations...... show that one of the main effects produced by the new system is sharpening of the displacement front, which otherwise would be washed out by the capillary forces, as in the solution of the Rappoport–Leas equation....

  12. The numerical solution of thawing process in phase change slab using variable space grid technique

    Directory of Open Access Journals (Sweden)

    Serttikul, C.

    2007-09-01

    Full Text Available This paper focuses on the numerical analysis of melting process in phase change material which considers the moving boundary as the main parameter. In this study, pure ice slab and saturated porous packed bed are considered as the phase change material. The formulation of partial differential equations is performed consisting heat conduction equations in each phase and moving boundary equation (Stefan equation. The variable space grid method is then applied to these equations. The transient heat conduction equations and the Stefan condition are solved by using the finite difference method. A one-dimensional melting model is then validated against the available analytical solution. The effect of constant temperature heat source on melting rate and location of melting front at various times is studied in detail.It is found that the nonlinearity of melting rate occurs for a short time. The successful comparison with numerical solution and analytical solution should give confidence in the proposed mathematical treatment, and encourage the acceptance of this method as useful tool for exploring practical problems such as forming materials process, ice melting process, food preservation process and tissue preservation process.

  13. Crystallization of glass-forming liquids: Specific surface energy

    International Nuclear Information System (INIS)

    Schmelzer, Jürn W. P.; Abyzov, Alexander S.

    2016-01-01

    A generalization of the Stefan-Skapski-Turnbull relation for the melt-crystal specific interfacial energy is developed in terms of the generalized Gibbs approach extending its standard formulation to thermodynamic non-equilibrium states. With respect to crystal nucleation, this relation is required in order to determine the parameters of the critical crystal clusters being a prerequisite for the computation of the work of critical cluster formation. As one of its consequences, a relation for the dependence of the specific surface energy of critical clusters on temperature and pressure is derived applicable for small and moderate deviations from liquid-crystal macroscopic equilibrium states. Employing the Stefan-Skapski-Turnbull relation, general expressions for the size and the work of formation of critical crystal clusters are formulated. The resulting expressions are much more complex as compared to the respective relations obtained via the classical Gibbs theory. Latter relations are retained as limiting cases of these more general expressions for moderate undercoolings. By this reason, the formulated, here, general relations for the specification of the critical cluster size and the work of critical cluster formation give a key for an appropriate interpretation of a variety of crystallization phenomena occurring at large undercoolings which cannot be understood in terms of the Gibbs’ classical treatment.

  14. Optimal Control of Thermo--Fluid Phenomena in Variable Domains

    Science.gov (United States)

    Volkov, Oleg; Protas, Bartosz

    2008-11-01

    This presentation concerns our continued research on adjoint--based optimization of viscous incompressible flows (the Navier--Stokes problem) coupled with heat conduction involving change of phase (the Stefan problem), and occurring in domains with variable boundaries. This problem is motivated by optimization of advanced welding techniques used in automotive manufacturing, where the goal is to determine an optimal heat input, so as to obtain a desired shape of the weld pool surface upon solidification. We argue that computation of sensitivities (gradients) in such free--boundary problems requires the use of the shape--differential calculus as a key ingredient. We also show that, with such tools available, the computational solution of the direct and inverse (optimization) problems can in fact be achieved in a similar manner and in a comparable computational time. Our presentation will address certain mathematical and computational aspects of the method. As an illustration we will consider the two--phase Stefan problem with contact point singularities where our approach allows us to obtain a thermodynamically consistent solution.

  15. Evidence of high-elevation amplification versus Arctic amplification.

    Science.gov (United States)

    Wang, Qixiang; Fan, Xiaohui; Wang, Mengben

    2016-01-12

    Elevation-dependent warming in high-elevation regions and Arctic amplification are of tremendous interest to many scientists who are engaged in studies in climate change. Here, using annual mean temperatures from 2781 global stations for the 1961-2010 period, we find that the warming for the world's high-elevation stations (>500 m above sea level) is clearly stronger than their low-elevation counterparts; and the high-elevation amplification consists of not only an altitudinal amplification but also a latitudinal amplification. The warming for the high-elevation stations is linearly proportional to the temperature lapse rates along altitudinal and latitudinal gradients, as a result of the functional shape of Stefan-Boltzmann law in both vertical and latitudinal directions. In contrast, neither altitudinal amplification nor latitudinal amplification is found within the Arctic region despite its greater warming than lower latitudes. Further analysis shows that the Arctic amplification is an integrated part of the latitudinal amplification trend for the low-elevation stations (≤500 m above sea level) across the entire low- to high-latitude Northern Hemisphere, also a result of the mathematical shape of Stefan-Boltzmann law but only in latitudinal direction.

  16. Numerical Simulation of the Heat Transfer Behavior of a Zigzag Plate Containing a Phase Change Material for Combustion Heat Recovery and Power Generation

    Directory of Open Access Journals (Sweden)

    Peilun Wang

    2016-01-01

    Full Text Available This study presents a numerical analysis of the melting process of phase change materials (PCMs within a latent heat thermal energy storage (LHTES system employing zigzag plate. The numerical model used NaCl-MgCl2 mixture as PCMs and hot air as heat transfer fluid (HTF. An experimental system was built to validate the model, and the experimental data agrees reasonably well with the simulation results. The simulation results revealed the effects of the Reynolds and Stefan numbers and the surface topography of the zigzag plate on the charging process. Besides, the effect of the relationship between Reynolds and Stefan numbers on the charging process under a new boundary condition employing a fixed input power was studied. It is found that by modifying the shape of the zigzag plate surface it is feasible to enhance the heat transfer of the LHTES unit remarkably. The melting rate of PCMs increases with the value of Ste or Re numbers with only one of them changing; however, the melting rate of PCMs decreases with the increasing Ste (or decreasing Re in a fixed input power condition.

  17. Nonlinear diffusion equations as asymptotic limits of Cahn-Hilliard systems on unbounded domains via Cauchy's criterion

    Science.gov (United States)

    Fukao, Takeshi; Kurima, Shunsuke; Yokota, Tomomi

    2018-05-01

    This paper develops an abstract theory for subdifferential operators to give existence and uniqueness of solutions to the initial-boundary problem (P) for the nonlinear diffusion equation in an unbounded domain $\\Omega\\subset\\mathbb{R}^N$ ($N\\in{\\mathbb N}$), written as \\[ \\frac{\\partial u}{\\partial t} + (-\\Delta+1)\\beta(u) = g \\quad \\mbox{in}\\ \\Omega\\times(0, T), \\] which represents the porous media, the fast diffusion equations, etc., where $\\beta$ is a single-valued maximal monotone function on $\\mathbb{R}$, and $T>0$. Existence and uniqueness for (P) were directly proved under a growth condition for $\\beta$ even though the Stefan problem was excluded from examples of (P). This paper completely removes the growth condition for $\\beta$ by confirming Cauchy's criterion for solutions of the following approximate problem (P)$_{\\varepsilon}$ with approximate parameter $\\varepsilon>0$: \\[ \\frac{\\partial u_{\\varepsilon}}{\\partial t} + (-\\Delta+1)(\\varepsilon(-\\Delta+1)u_{\\varepsilon} + \\beta(u_{\\varepsilon}) + \\pi_{\\varepsilon}(u_{\\varepsilon})) = g \\quad \\mbox{in}\\ \\Omega\\times(0, T), \\] which is called the Cahn--Hilliard system, even if $\\Omega \\subset \\mathbb{R}^N$ ($N \\in \\mathbb{N}$) is an unbounded domain. Moreover, it can be seen that the Stefan problem is covered in the framework of this paper.

  18. Four steps to eliminate or reduce pain in children caused by needles (part 1).

    Science.gov (United States)

    Friedrichsdorf, Stefan J

    2017-03-01

    Dr Stefan Friedrichsdorf speaks to Jade Parker, Commissioning Editor: Stefan J Friedrichsdorf, MD, is medical director of the Department of Pain Medicine, Palliative Care and Integrative Medicine at Children's Hospitals and Clinics of Minnesota, Minneapolis/St Paul, MN, USA, home to one of the largest and most comprehensive programs of its kind in the country. The interdisciplinary pain team is devoted to prevent and treat acute, procedural, neuropathic, psycho-social-spiritual, visceral, and chronic/complex pain for all inpatients and outpatients in close collaboration with all pediatric subspecialties at Children's Minnesota. The palliative care team also provides holistic care for pediatric patients with life-threatening diseases and adds an extra layer of support to the care of children with serious illness and their families. Integrative medicine provides and teaches integrative ('non-pharmacological') therapies, such as massage, acupuncture/acupressure, biofeedback, aromatherapy and self-hypnosis, to provide care that promotes optimal health and supports the highest level of functioning in all individual children's activities. Children's Minnesota became the first children's hospital to system-wide implement a "Children's Comfort Promise: We promise to do everything to prevent and treat pain," resulting in decrease or elimination of needle pain caused by vaccinations, blood draws, intravenous access, and injections in more than 200,000 children annually.

  19. Entropy density of an adiabatic relativistic Bose-Einstein condensate star

    Energy Technology Data Exchange (ETDEWEB)

    Khaidir, Ahmad Firdaus; Kassim, Hasan Abu; Yusof, Norhasliza [Theoretical Physics Lab., Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur (Malaysia)

    2015-04-24

    Inspired by recent works, we investigate how the thermodynamics parameters (entropy, temperature, number density, energy density, etc) of Bose-Einstein Condensate star scale with the structure of the star. Below the critical temperature in which the condensation starts to occur, we study how the entropy behaves with varying temperature till it reaches its own stability against gravitational collapse and singularity. Compared to photon gases (pressure is described by radiation) where the chemical potential, μ is zero, entropy of photon gases obeys the Stefan-Boltzmann Law for a small values of T while forming a spiral structure for a large values of T due to general relativity. The entropy density of Bose-Einstein Condensate is obtained following the similar sequence but limited under critical temperature condition. We adopt the scalar field equation of state in Thomas-Fermi limit to study the characteristics of relativistic Bose-Einstein condensate under varying temperature and entropy. Finally, we obtain the entropy density proportional to (σT{sup 3}-3T) which obeys the Stefan-Boltzmann Law in ultra-relativistic condition.

  20. On the radiological consequences near and far away from the catastrophically damaged Chernobyl Nuclear Power Plant

    Energy Technology Data Exchange (ETDEWEB)

    Susnik, J [Reactor Engineering Div., Inst. Jozef Stefan, Ljubljana (Slovenia)

    1992-07-01

    The influence of the radioactive cloud rise at the site on the potential expected post accidental doses, using the WASH-1400 PWR-1A scenario and the CRAC 2 model, was studied. The UNSCEAR 1988 was used to estimate the activity of the cloud that contaminated Slovenia and neighbouring areas. The contamination levels at the J.Stefan Institute were used for comparison (the match was surprisingly good). Some of the expected doses due to early irradiation from the cloud, ground, inhalation and ingestion are also shown. Dose reduction possibilities were estimated. (author) [Slovenian] Preucili smo vpliv dviga radioaktivnega oblaka na lokaciji JE na potencialne ponezgodne doze, pri cemer smo izhajali iz WASH-1400 PWR-1A scenarija in uporabili program CRAC2. UNSCEAR 1988 smo uporabili za oceno aktivnosti oblaka, ki je onesnazil Slovenijo in sosednja podrocja. Nivoje kontaminacije izmerjene na lokaciji Instituta J. Stefan smo uporabili za primerjavo (ujemanje je bilo presenetljivo dobro). Podajamo tudi nekatere pricakovane doze zgodnjega obsevanja iz oblaka, s tal, vdihovanja in vnosa hrane. Ocenili smo mozna znizanja doz. [author].

  1. O lirismo em György Lukács

    Directory of Open Access Journals (Sweden)

    Arlenice Almeida da Silva

    2009-06-01

    Full Text Available O artigo visa a examinar o tratamento dado ao lírico na obra estética do jovem Lukács. Em A alma e as formas o autor examina a poesia de Stefan George, encontrando nela elementos formais que apontam para o surgimento de um novo lirismo. Tal "forma significativa" possibilita ao autor introduzir uma abordagem do conceito de modernidade, em viés crítico e fenomenológico. Empreendimento que será completado em A teoria do romance, quando a tendência lírica se apresentará exacerbada, contaminando e alterando as configurações dos demais gêneros.The paper aims to examine the treatment of lyrical in the aesthetics work of the young Lukács. In The Soul and the Forms the author examines the poetry of Stefan George, finding on it formal elements that point out to the emergence of a new lyricism. This "significant form" allows the author to introduce an approach of the concept of modernity, in critical and phenomenological bias. Work that will be completed in The theory of Love, when the lyric trend will be exacerbated, contaminating and altering the settings of the other genera.

  2. PEG 400-Based Phase Change Materials Nano-Enhanced with Functionalized Graphene Nanoplatelets.

    Science.gov (United States)

    Marcos, Marco A; Cabaleiro, David; Guimarey, María J G; Comuñas, María J P; Fedele, Laura; Fernández, Josefa; Lugo, Luis

    2017-12-29

    This study presents new Nano-enhanced Phase Change Materials, NePCMs, formulated as dispersions of functionalized graphene nanoplatelets in a poly(ethylene glycol) with a mass-average molecular mass of 400 g·mol -1 for possible use in Thermal Energy Storage. Morphology, functionalization, purity, molecular mass and thermal stability of the graphene nanomaterial and/or the poly(ethylene glycol) were characterized. Design parameters of NePCMs were defined on the basis of a temporal stability study of nanoplatelet dispersions using dynamic light scattering. Influence of graphene loading on solid-liquid phase change transition temperature, latent heat of fusion, isobaric heat capacity, thermal conductivity, density, isobaric thermal expansivity, thermal diffusivity and dynamic viscosity were also investigated for designed dispersions. Graphene nanoplatelet loading leads to thermal conductivity enhancements up to 23% while the crystallization temperature reduces up to in 4 K. Finally, the heat storage capacities of base fluid and new designed NePCMs were examined by means of the thermophysical properties through Stefan and Rayleigh numbers. Functionalized graphene nanoplatelets leads to a slight increase in the Stefan number.

  3. PEG 400-Based Phase Change Materials Nano-Enhanced with Functionalized Graphene Nanoplatelets

    Directory of Open Access Journals (Sweden)

    Marco A. Marcos

    2017-12-01

    Full Text Available This study presents new Nano-enhanced Phase Change Materials, NePCMs, formulated as dispersions of functionalized graphene nanoplatelets in a poly(ethylene glycol with a mass-average molecular mass of 400 g·mol−1 for possible use in Thermal Energy Storage. Morphology, functionalization, purity, molecular mass and thermal stability of the graphene nanomaterial and/or the poly(ethylene glycol were characterized. Design parameters of NePCMs were defined on the basis of a temporal stability study of nanoplatelet dispersions using dynamic light scattering. Influence of graphene loading on solid-liquid phase change transition temperature, latent heat of fusion, isobaric heat capacity, thermal conductivity, density, isobaric thermal expansivity, thermal diffusivity and dynamic viscosity were also investigated for designed dispersions. Graphene nanoplatelet loading leads to thermal conductivity enhancements up to 23% while the crystallization temperature reduces up to in 4 K. Finally, the heat storage capacities of base fluid and new designed NePCMs were examined by means of the thermophysical properties through Stefan and Rayleigh numbers. Functionalized graphene nanoplatelets leads to a slight increase in the Stefan number.

  4. The iconostasis in Dečani: the original painted programme and subsequent changes

    Directory of Open Access Journals (Sweden)

    Todić Branislav

    2012-01-01

    Full Text Available The history of the iconostasis in the central nave of the church in Dečani can be divided into two periods. The icons of Christ, the Mother of God, John the Baptist and St. Nicholas on the original altar screen, painted around 1343, were related to the relics of King Stefan Dečanski and with the wall painting in the church space in front of the altar. The removal of those icons at the end of the sixteenth century and their replacement with new ones explains the strengthening cult of St. Stefan Dečanski. In 1577 an icon of St. Stephen was placed over the king’s portrait depicted in the fourteenth century fresco painting, and by 1593/1594, the new despotic icons of Christ and the Virgin were painted for the iconostasis, then an expanded Deesis that was placed above them, with a large cross fixed on the top. The central icons were painted by the painter Longin, and the cross is attributed to Andreja, a painter known for his frescoes from the seventh and eighth decade of the seventeenth century.

  5. Droplet size effects on film drainage between droplet and substrate.

    Science.gov (United States)

    Steinhaus, Benjamin; Spicer, Patrick T; Shen, Amy Q

    2006-06-06

    When a droplet approaches a solid surface, the thin liquid film between the droplet and the surface drains until an instability forms and then ruptures. In this study, we utilize microfluidics to investigate the effects of film thickness on the time to film rupture for water droplets in a flowing continuous phase of silicone oil deposited on solid poly(dimethylsiloxane) (PDMS) surfaces. The water droplets ranged in size from millimeters to micrometers, resulting in estimated values of the film thickness at rupture ranging from 600 nm down to 6 nm. The Stefan-Reynolds equation is used to model film drainage beneath both millimeter- and micrometer-scale droplets. For millimeter-scale droplets, the experimental and analytical film rupture times agree well, whereas large differences are observed for micrometer-scale droplets. We speculate that the differences in the micrometer-scale data result from the increases in the local thin film viscosity due to confinement-induced molecular structure changes in the silicone oil. A modified Stefan-Reynolds equation is used to account for the increased thin film viscosity of the micrometer-scale droplet drainage case.

  6. Tratteggio retouch and its derivatives as an image reintegration solution in the process of restoration

    Directory of Open Access Journals (Sweden)

    Magdalena Grenda

    2010-11-01

    Full Text Available L’article traite du problème de retouche dans la conservation- restauration du papier, concernant en particulier la retouche tratteggio et ses derivatifs que peuvent être la solution de la réintegration de l’image, non si populaire parmi les restaurateurs du papier. C’était la partie du projet de Maîtrise de l’auteur d’examiner la possibilité de l’usage de retouches comme tratteggio dans la restauration de l’affiche de cinéma polonaise de Stefan Norblin, imprimée en lithographie en couleurs.The article describes issues concerning retouch in paper conservation- restoration with particular consideration of tratteggio retouch and its derivatives as an image reintegration solution, not very popular among paper conservators. It was a part of author’s MA project to examine the possibility of using tratteggio- like retouches during the restoration of 20th century Polish film poster by Stefan Norblin, printed in colour litograph.

  7. The effects of radiative heat transfer during the melting process of a high temperature phase change material confined in a spherical shell

    International Nuclear Information System (INIS)

    Archibold, Antonio Ramos; Rahman, Muhammad M.; Yogi Goswami, D.; Stefanakos, Elias K.

    2015-01-01

    Highlights: • Analyzed effects of radiation heat transfer during melting in spherical shell. • Performed analyses to ascertain the effects of optical thickness and the Planck, Grashof and Stefan numbers. • Present correlations for melt fraction and modified Nusselt number. - Abstract: The influence of radiation heat transfer during the phase change process of a storage material has been numerically analyzed in this study. Emphasis has been placed on the thermal characterization of a single constituent storage module rather than an entire storage system, in order to precisely capture the energy exchange contributions of all the fundamental heat transfer mechanisms during the melting of a phase change material (PCM) with tailored optical properties. The equations describing the conservation of mass, momentum and energy have been solved by using the control volume discretization approach, while the radiative transfer equation (RTE) was solved by the discrete ordinate method (DOM). The enthalpy–porosity method was used to track the PCM liquid/solid interface during the process. A parametric analysis has been performed in order to ascertain the effects of the optical thickness and the Planck, Grashof and Stefan numbers on the melting rate, as well as the total and radiative heat transfer rates at the inner surface of the shell. The results show that the presence of thermal radiation enhances the melting process. Correlations for the melt fraction and modified Nusselt number are developed for application in the design process of packed bed heat exchangers for latent heat thermal energy storage

  8. Dynamic Confinement of ITER Plasma by O-Mode Driver at Electron Cyclotron Frequency Range

    Science.gov (United States)

    Stefan, V. Alexander

    2009-05-01

    A low B-field side launched electron cyclotron O-Mode driver leads to the dynamic rf confinement, in addition to rf turbulent heating, of ITER plasma. The scaling law for the local energy confinement time τE is evaluated (τE ˜ 3neTe/2Q, where (3/2) neTe is the local plasma thermal energy density and Q is the local rf turbulent heating rate). The dynamics of unstable dissipative trapped particle modes (DTPM) strongly coupled to Trivelpiece-Gould (T-G) modes is studied for gyrotron frequency 170GHz; power˜24 MW CW; and on-axis B-field ˜ 10T. In the case of dynamic stabilization of DTPM turbulence and for the heavily damped T-G modes, the energy confinement time scales as τE˜(I0)-2, whereby I0(W/m^2) is the O-Mode driver irradiance. R. Prater et. al., Nucl. Fusion 48, No 3 (March 2008). E. P. Velikhov, History of the Russian Tokamak and the Tokamak Thermonuclear Fusion Research Worldwide That Led to ITER (Documentary movie; Stefan Studios Int'l, La Jolla, CA, 2008; E. P. Velikhov, V. Stefan.) M N Rosenbluth, Phys. Scr. T2A 104-109 1982 B. B. Kadomtsev and O. P. Pogutse, Nucl. Fusion 11, 67 (1971).

  9. WIMS Library updating

    Energy Technology Data Exchange (ETDEWEB)

    Ravnik, M; Trkov, A [Inst. Jozef Stefan, Ljubljana (Slovenia); Holubar, A [Ustav Jaderneho Vyzkumu CSKAE, Rez (Serbia and Montenegro)

    1992-07-01

    At the end of 1990 the WIMS Library Update Project (WLUP) has been initiated at the International Atomic Energy Agency. The project was organized as an international research project, coordinated at the J. Stefan Institute. Up to now, 22 laboratories from 19 countries joined the project. Phase 1 of the project, which included WIMS input optimization for five experimental benchmark lattices, has been completed. The work presented in this paper describes also the results of Phase 2 of the Project, in which the cross sections based on ENDF/B-IV evaluated nuclear data library have been processed. (author) [Slovenian] Konec 1990 se je na Mednarodni agenciji za atomsko energijo zacel projekt obnove knjiznice presekov programa WIMS (WIMS Library Updating Project, WLUP). V projektu sodeluje 22 laboratorijev iz 19 drzav, koordiniramo pa ga na Institutu Jozef Stefan. Doslej je koncana faza 1 tega projekta, ki obsega optimizacijo vhodnega modela programa WIMS za pet eksperimentalnih testnih problemov. Podani so tudi rezultati faze 2, v kateri so se procesirali preseki na osnovi ENDF/B-IV datoteke. (author)

  10. Book Reviews

    Directory of Open Access Journals (Sweden)

    Malcom W. Mintz

    1997-01-01

    Full Text Available - Peter Boomgaard, Simone Prodolliet, Händlerinnen, Goldgr��ber und Staatsbeamte; Sozialgeschichte einer Kleinstadt im Hochland Südwestsumatras. Berlin: Reimer, 1996, 372 pp. [Berner Sumatra-Forschungen.] - Richard Chauvel, Antje van der Hoek, Religie in Ballingschap; Institutionalisering en Leiderschap onder Christelijke en Islamitische Molukkers in Nederland. Amsterdam: VU Uitgeverij, 1994, 297 pp. - J.E. Lelijveld, Kees Groeneboer, Weg tot het Westen; Het Nederlands voor Indië 1600-1950. Leiden: KITLV Uitgeverij, 1993, xii + 580 pp. - Bernd Nothofer, P.W. Martin, Language Use & Language Change in Brunei Darussalam, Athens, OH: Ohio University Center for International Studies, 1996, xvi + 373 pp. [Monographs in International Studies 100.], C. Ozog, G. Poedjosoedarmo (eds. - Anton Ploeg, Pamela Swadling, Plumes from Paradise; Trade cycles in outer Southeast Asia and their impact on New Guinea and nearby islands until 1920. With contributions by Roy Wagner and Billai Laba. Boroko/Coorparoo (Qld: Papua New Guinea National Museum in association with R. Brown & Ass. (Qld, 1996, 352 pp. Plates, maps, index. - Bernard Sellato, Traude Gavin, The women’s warpath; Iban ritual fabrics from Borneo, Los Angeles: UCLA Fowler Museum of Cultural History, 1996, 99 pp. - Jyh Wee Sew, Malcom W. Mintz, A course in conversational Indonesian (with equivalent Malay vocabulary. Singapore: EPB Publishers, 1994, 558 pp. - Kees Snoek, Liesbeth Dolk, Twee Zielen, Twee Gedachten; Tijdschriften en Intellectuelen op Java (1900-1957, Leiden: KITLV Uitgeverij, 1993, 220 pp. - Nicholas Tarling, Paul H. Kratoska, Malaya and Singapore during the Japanese Occupation. Singapore: National University of Singapore, 1995, xii + 175 pp. [Journal of Southeast Asian Studies Special Publications Series 3.

  11. Emerging role of dipeptidyl peptidase-4 inhibitors in the management of type 2 diabetes

    Directory of Open Access Journals (Sweden)

    Bernd Richter

    2008-08-01

    Full Text Available Bernd Richter, Elizabeth Bandeira-Echtler, Karla Bergerhoff, Christian LerchCochrane Metabolic and Endocrine Disorders Group, Department of General Practice, Heinrich-Heine University Duesseldorf, Duesseldorf, GermanyBackground: In type 2 diabetes mellitus (T2DM there is a progressive loss of β-cell function. One new approach yielding promising results is the use of the orally active dipeptidyl peptidase-4 (DPP-4 inhibitors. However, every new compound for T2DM has to prove long-term safety especially on cardiovascular outcomes.Objectives: Systematic review and meta-analysis of the effects of sitagliptin and vildagliptin therapy on main efficacy parameters and safety.Selection criteria, data collection, and analysis: Randomized controlled clinical studies of at least 12 weeks’ duration in T2DM.Results: DPP-4 inhibitors versus placebo showed glycosylated hemoglobin A1c (A1c improvements of 0.7% versus placebo but not compared to monotherapy with other hypoglycemic agents (0.3% in favor of controls. The overall risk profile of DPP-4 inhibitors was low, however a 34% relative risk increase (95% confidence interval 10% to 64%, P = 0.004 was noted for all-cause infection associated with sitagliptin use. No data on immune function, health-related quality of life and diabetic complications could be extracted.Conclusions: DPP-4 inhibitors have some theoretical advantages over existing therapies with oral antidiabetic compounds but should currently be restricted to individual patients. Long-term data on cardiovascular outcomes and safety are needed before widespread use of these new agents.Keywords: DPP-4 inhibitors, sitagliptin, vildagliptin, systematic review, meta-analysis

  12. Critical appraisal of the role of fingolimod in the treatment of multiple sclerosis

    Directory of Open Access Journals (Sweden)

    Warnke C

    2011-09-01

    Full Text Available Clemens Warnke1,2, Olaf Stüve3,4, Hans-Peter Hartung1, Anna Fogdell-Hahn2, Bernd C Kieseier11Department of Neurology, Heinrich-Heine-University, Düsseldorf, Germany; 2Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden; 3Department of Neurology, Dallas Veterans Affairs Medical Center, TX, USA; 4Department of Neurology, University of Texas Southwestern Medical Center at Dallas, TX, USAAbstract: This review summarizes Phase III clinical trial data available for fingolimod. The main purpose is to evaluate the benefit-risk profile of fingolimod, the first oral compound available for treatment of multiple sclerosis (MS and just recently approved by the European authorities. The authors place this evaluation in the context of the known safety and efficacy profile of established compounds for therapy of MS to outline the current and future potential of fingolimod. The authors conclude that only long-term safety data from post-marketing surveillance plans, together with additional head-to-head studies, would allow evidence-based treatment decisions. Furthermore, risk-profile analyses including patient history, exposure data to certain pathogens, and genetic analyses may potentially help to choose the right drug for individual patients in the future. Until these approaches toward an individualized medicine have been validated, treatment decisions for one or the other compound will have to be based partly on class IV evidence. Therefore, a close dialog with the well-informed patient, secured by effective risk mitigation plans, is required to choose the compound.Keywords: FTY720, oral drug, spingosine 1-phosphate receptor

  13. Special considerations for adolescent athletic and asthmatic patients

    Directory of Open Access Journals (Sweden)

    Wuestenfeld JC

    2013-01-01

    Full Text Available Jan C Wuestenfeld,1,2 Bernd Wolfarth1,21Department of Preventive and Rehabilitative Sports Medicine, Technical University Munich (TUM, Munich, Germany; 2Institute for Applied Training Science (IAT, Leipzig, GermanyAbstract: Asthma is defined as a chronic inflammatory disorder of the airways with bronchial hyperresponsiveness and variable bronchoconstriction, and is one of the most common diseases in childhood and adolescence. Exercise-induced asthma-like symptoms and asthma are also frequently seen in highly trained athletes. Exercise-induced asthma (EIA and exercise-induced bronchoconstriction (EIB are found in 8%–10% of healthy school-aged children and in 35% of children with asthma. Highly increased ventilation, inhalation of cold, dry air and air pollutants (eg, chlorine are thought to be important triggers for EIA and EIB. EIA is often experienced concurrently with vocal cord dysfunction, which needs to be considered during the differential diagnosis. The pharmacological treatment of EIA is similar to the treatment of asthma in nonexercising adolescents. The therapy is based on anti-inflammatory drugs (eg, inhaled glucocorticosteroids and bronchodilators (eg, β2-agonists. The treatment of EIB is comparable to the treatment of EIA and leukotriene modifiers offer a new and promising treatment option, particularly in EIB. Generally, athletes may not use β2-agonists according to the prohibited list of the World Anti-Doping Agency (WADA. However, the WADA list contains specific β2-agonistic substances that are permitted to be used by inhalation.Keywords: exercise-induced asthma, exercise-induced bronchospasm, adolescents, asthma, athletes

  14. Preparing for a Career in Industrial Physics

    Science.gov (United States)

    Meisner, Gregory

    My career in physics has been extremely rewarding. My career path, however, was not what I imagined it would be when I started college. I thought I would be a math major and eventually a university math professor. A big challenge of my college and graduate school experience, aside from actually learning physics, was to find out what I was most passionate about and then to pursue that endeavor wherever it led. The graduate school part of my career path wound its way into experimental condensed matter physics, but I still expected that I would remain in academia. Along the way, I learned a lot from many people, worked hard to accomplish good results, and availed myself of unexpected opportunities for professional development and career advancement. One piece of advice that resonated with me was to always try to be learning something new, and I did manage to do that throughout my career: in graduate school and as a post doc I studied low temperature experimental physics and superconductivity, whereas my areas of research as an industrial physicist at GM R&D were permanent magnets, then hydrogen storage materials for fuel cell vehicle applications, and finally thermoelectric materials and devices for waste exhaust gas heat recovery. The best piece of advice, which has served me well along my career path and my life path in general, was in the remarks astronaut Katherine Sullivan gave at my PhD graduation ceremony at UCSD in 1982. Her advice was captured in the word ``quality''. Specifically, always strive for the highest quality in everything you do. Another impactful word, which was a favorite of my thesis advisor, Bernd Matthias, is ``serendipity''. Specifically, you need to know how to recognize and capitalize on unexpected or unusual occurrences - they may be the best stepping stones you will have along your career path. My presentation will discuss a few specifics of how I prepared myself for a career in industrial physics.

  15. Biogas upgrading to biomethane. Proceedings; Biogasaufbereitung zu Biomethan. Tagungsband

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-12-05

    Within the 6th Hanauer Dialogue 'Biogas upgrading to biomethane' at 21st February, 2008, the following lectures were held: (a) Processing of biogas - an introduction (Michael Beil); (b) The climate protecting targets of the Federal Republic of Germany: Which role will play the upgrading of biogas, and which legal boundary conditions are created by the Federal Government? (Uwe Holzhammer); (c) Future strategy: CH{sub 4} grids (Juergen Schmid); (d) Biogas upgrading and biomethane utilization in Sweden (Anneli Petersson); (e) Biogas upgrading and utilization of bio methane in Switzerland (Arthur Wellinger); (f) Biogas upgrading by means of pressure swing adsorption (Alfons Schulte-Schulze Berndt); (g) Biogas upgrading by means of pressurized water washing (Ulf Richter); (h) Biogas upgrading for feeding in public grids. The case of biogas plant Bruck a.d. Leitha (Michael Harasek); (i) Biogas upgrading by means of chemical absorption according to the LP Cooab process (Jerome van Beek); (j) Practical experiences in unpressurized amine washing MT bio methane (Karsten Wuensche); (k) Biogas upgrading by means of organic physical washing with HAASE biogas amplifiers (Roland Kahn); (l) Upgrading using cryogenic technology; the GPP registered -system (Jeroen de Pater); (m) Micro Gas Distribution Systems: Alternatives to biogas upgrading and grid injection (Michael Beil, Bernd Krautkremer); (n) Feeding of exchange gas. The case of project Straelen and Kerpen (Frank Schaefer); (o) Feeding of biogas from the view of grid operators (Norbert Nordmeyer); BIOGASMAX: Biogas as Vehicle Fuel - Market Expansion to 2020 Air Quality (Michael Beil, Uwe Hoffstede); (p) Study: Feeding of biogas into the natural gas distribution system (Fachagentur Nachwachsende Rohstoffe).

  16. Intraoperative optical coherence tomography and ab interno trabecular meshwork surgery with the Trabectome

    Directory of Open Access Journals (Sweden)

    Junker B

    2017-09-01

    Full Text Available Bernd Junker,1 Jens F Jordan,2 Carsten Framme,1 Amelie Pielen1 1University Eye Hospital, Medical School Hannover, Hannover, 2Eye Center, Medical Center, University of Freiburg, Freiburg, Germany Importance: This study is the first description of the use of the intraoperative optical coherence tomography (iOCT for trabecular meshwork surgery with the Trabectome in a regular clinical setting.Background: The aim of this study is to evaluate intraoperatively the immediate success of ab interno trabeculotomy with the Trabectome defined as a removal of the trabecular meshwork.Design: This is a retrospective clinical study performed in the University Eye Hospital, Medical School Hannover.Participants: A total of nine consecutive Caucasian patients suffering from primary open angle glaucoma, pigment dispersion glaucoma, or pseudoexfoliation glaucoma took part in the study.Methods: All patients underwent ab interno trabeculotomy surgery with the Trabectome using a commercially available iOCT to visualize the anterior chamber angle (ACA before and after the procedure. The visualization was done using a modified Swan-Jacobs lens (all nine patients or without lens (view from above, five patients.Main outcome measures: The main outcome of this study is the success of visualization of the ACA on iOCT, especially the postprocedural visualization of the wound gap after removal of the trabecular meshwork.Results: Using the view from above, the ACA could be visualized before and after the procedure in only two of the five cases. Using the modified Swan-Jacobs lens, the ACA could be visualized before the procedure and the trabecular meshwork opening after the procedure in all nine patients.Conclusion: The iOCT can be used to objectify the immediate success of the surgical procedure, ie, the removal of the trabecular meshwork, of ab interno trabeculotomy with the Trabectome. The procedure itself cannot be captured sufficiently via iOCT. Keywords: glaucoma, imaging

  17. PREFACE: 6th International Workshop on Multi-Rate Processes and Hysteresis (MURPHYS2012)

    Science.gov (United States)

    Dimian, Mihai; Rachinskii, Dmitrii

    2015-02-01

    The International Workshop on Multi-Rate Processes and Hysteresis (MURPHYS) conference series focuses on multiple scale systems, singular perturbation problems, phase transitions and hysteresis phenomena occurring in physical, biological, chemical, economical, engineering and information systems. The 6th edition was hosted by Stefan cel Mare University in the city of Suceava located in the beautiful multicultural land of Bukovina, Romania, from May 21 to 24, 2012. This continued the series of biennial multidisciplinary conferences organized in Cork, Ireland from 2002 to 2008 and in Pécs, Hungary in 2010. The MURPHYS 2012 Workshop brought together more than 50 researchers in hysteresis and multi-scale phenomena from the United State of America, the United Kingdom, France, Germany, Italy, Ireland, Czech Republic, Hungary, Greece, Ukraine, and Romania. Participants shared and discussed new developments of analytical techniques and numerical methods along with a variety of their applications in various areas, including material sciences, electrical and electronics engineering, mechanical engineering and civil structures, biological and eco-systems, economics and finance. The Workshop was sponsored by the European Social Fund through Sectoral Operational Program Human Resources 2007-2013 (PRO-DOCT) and Stefan cel Mare University, Suceava. The Organizing Committee was co-chaired by Mihai Dimian from Stefan cel Mare University, Suceava (Romania), Amalia Ivanyi from the University of Pecs (Hungary), and Dmitrii Rachinskii from the University College Cork (Ireland). All papers published in this volume of Journal of Physics: Conference Series have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing. The Guest Editors wish to place on record their sincere gratitude to Miss Sarah Toms for the assistance she provided

  18. Enhancing radiative energy transfer through thermal extraction

    Science.gov (United States)

    Tan, Yixuan; Liu, Baoan; Shen, Sheng; Yu, Zongfu

    2016-06-01

    Thermal radiation plays an increasingly important role in many emerging energy technologies, such as thermophotovoltaics, passive radiative cooling and wearable cooling clothes [1]. One of the fundamental constraints in thermal radiation is the Stefan-Boltzmann law, which limits the maximum power of far-field radiation to P0 = σT4S, where σ is the Boltzmann constant, S and T are the area and the temperature of the emitter, respectively (Fig. 1a). In order to overcome this limit, it has been shown that near-field radiations could have an energy density that is orders of magnitude greater than the Stefan-Boltzmann law [2-7]. Unfortunately, such near-field radiation transfer is spatially confined and cannot carry radiative heat to the far field. Recently, a new concept of thermal extraction was proposed [8] to enhance far-field thermal emission, which, conceptually, operates on a principle similar to oil immersion lenses and light extraction in light-emitting diodes using solid immersion lens to increase light output [62].Thermal extraction allows a blackbody to radiate more energy to the far field than the apparent limit of the Stefan-Boltzmann law without breaking the second law of thermodynamics. Thermal extraction works by using a specially designed thermal extractor to convert and guide the near-field energy to the far field, as shown in Fig. 1b. The same blackbody as shown in Fig. 1a is placed closely below the thermal extractor with a spacing smaller than the thermal wavelength. The near-field coupling transfers radiative energy with a density greater than σT4. The thermal extractor, made from transparent and high-index or structured materials, does not emit or absorb any radiation. It transforms the near-field energy and sends it toward the far field. As a result, the total amount of far-field radiative heat dissipated by the same blackbody is greatly enhanced above SσT4, where S is the area of the emitter. This paper will review the progress in thermal

  19. [Between the European past and the American future: two papers about Brazil in the 1930s].

    Science.gov (United States)

    Lisboa, Karen Macknow

    2014-01-01

    The article examines the idea of Europe conceived by Stefan Zweig and Hermann Ullmann in the similarly titled books about Brazil written in the late 1930s and early 1940s. In the political context between the great wars marked by the rise of Nazism, the question is posed regarding to what extent Europe continues to serve as a model of civilization and what the critical dimension is that is expressed in concepts reversing the roles of Europe and Brazil. One detects a partial rupture with dichotomous and hierarchical viewpoints about the relationship between the Old World and the New World, and new forms of relationship between these regions within the worldwide context are suggested.

  20. Fractional dynamic calculus and fractional dynamic equations on time scales

    CERN Document Server

    Georgiev, Svetlin G

    2018-01-01

    Pedagogically organized, this monograph introduces fractional calculus and fractional dynamic equations on time scales in relation to mathematical physics applications and problems. Beginning with the definitions of forward and backward jump operators, the book builds from Stefan Hilger’s basic theories on time scales and examines recent developments within the field of fractional calculus and fractional equations. Useful tools are provided for solving differential and integral equations as well as various problems involving special functions of mathematical physics and their extensions and generalizations in one and more variables. Much discussion is devoted to Riemann-Liouville fractional dynamic equations and Caputo fractional dynamic equations.  Intended for use in the field and designed for students without an extensive mathematical background, this book is suitable for graduate courses and researchers looking for an introduction to fractional dynamic calculus and equations on time scales. .

  1. TRIGA fuel element burnup determination by measurement and calculation

    International Nuclear Information System (INIS)

    Zagar, T.; Ravnik, M.; Persic, A.; Jeraj, R.

    2000-01-01

    To estimate the accuracy of the fuel element burnup calculation different factors influencing the calculation were studied. To cover different aspects of burnup calculations, two in-house developed computer codes were used in calculations. The first (TRIGAP) is based on a one-dimensional two-group diffusion approximation, and the second (TRIGLAV) is based on a two-dimensional four-group diffusion equation. Both codes use WIMSD program with different libraries forunit-cell cross section data calculation. The burnup accumulated during the operating history of the TRIGA reactor at Josef Stefan Institute was calculated for all fuel elements. Elements used in the core during this period were standard SS 8.5% fuel elements, standard SS 12% fuel elements and highly enriched FLIP fuel elements. During the considerable period of operational history, FLIP and standard fuel elements were used simultaneously in mixed cores. (authors)

  2. Combined conduction and radiation with phase change in teflon slabs

    International Nuclear Information System (INIS)

    Shih, T.M.; Hsu, I.C.; Cunnington, G.R. Jr.

    1986-01-01

    A new approach to investigate, numerically, an one-dimensional Stefan problem with combined radiation and conduction has been developed. This numerical scheme is a modified version of the heat flux method and the scheme tracks the moving phase changing interface by coordinate transformation. The physical problem involves the radiative heating on one side of a Teflon slab; causing the material to melt and sublime as the melt-solid interface recedes. The other side of the Teflon slab is insulated. The results of this numerical scheme has been compared with results reported in the literature; before attempting to use this scheme to predict the experimental data. Satisfactory agreement between numerical results and the results in the literature as well as the experimental data has been obtained in both comparisons

  3. Sound & The Society

    DEFF Research Database (Denmark)

    Schulze, Holger

    2014-01-01

    How are those sounds you hear right now socially constructed and evaluated, how are they architecturally conceptualized and how dependant on urban planning, industrial developments and political decisions are they really? How is your ability to hear intertwined with social interactions and their ...... and their professional design? And how is listening and sounding a deeply social activity – constructing our way of living together in cities as well as in apartment houses? A radio feature with Nina Backmann, Jochen Bonz, Stefan Krebs, Esther Schelander & Holger Schulze......How are those sounds you hear right now socially constructed and evaluated, how are they architecturally conceptualized and how dependant on urban planning, industrial developments and political decisions are they really? How is your ability to hear intertwined with social interactions...

  4. Figurations of the infra-ordinary. Play and urban imaginaries in Rimini Protokoll’s documentary theatre practice

    Directory of Open Access Journals (Sweden)

    Roberto Cavallini

    2013-03-01

    Full Text Available Early June 2008. It’s a sunny and gorgeously warm day in Berlin. With a friend, I reach the Hebbel Am Uffer Theatre twenty minutes before the beginning of Call Cutta in a box, a piece by Rimini Protokoll, a label for the documentary theatre of Helgard Haug, Stefan Kaegi and Daniel Wetzel. In the brochure, we read that there are time slots for two spectators at once. We buy our tickets and move towards the theatre’s entrance. But apparently, there is no entrance. Instead, a huge guy looks at me kindly indicating the map in my hand and explaining that the show is not in the theatre but few metres away in a glass corporate building by the river.

  5. Cine-Club

    CERN Multimedia

    Cine-Club

    2011-01-01

    Thursday 10 November 2011 at 20:30 CERN Council Chamber The Counterfeiters / Die Fälscher By: Stefan Ruzowitzky (Germany/Austria, 2007) 98 min With: Karl Markovics, August Diel, Devid Striesow The Counterfeiters is the true story of the largest counterfeiting operation in history, set up by the Nazis in 1936. Master counterfeiter Salomon ‘Sally’ Sorowitsch, a Jew without morals, is arrested and sent to Mauthausen concentration camp, where he weasels through by offering his ‘artistic’ services. After transfer to Sachsenhausen he’s given an official alternative: taking ‘artistic’ charge of a cons teams assigned to produce perfect forgeries of allied banknotes for the Third Reich. Survivor Sally accepts, but conscience matters among the team prove no less dangerous then a sadistic jailer, which only the CO may keep in check. Original version German; English subtitles Entrance: 2 CHF Projection from DVD http://cine...

  6. Characterization of gamma field in the JSI TRIGA reactor

    Science.gov (United States)

    Ambrožič, Klemen; Radulović, Vladimir; Snoj, Luka; Gruel, Adrien; Guillou, Mael Le; Blaise, Patrick; Destouches, Christophe; Barbot, Loïc

    2018-01-01

    Research reactors such as the "Jožzef Stefan" Institute TRIGA reactor have primarily been designed for experimentation and sample irradiation with neutrons. However recent developments in incorporating additional instrumentation for nuclear power plant support and with novel high flux material testing reactor designs, γ field characterization has become of great interest for the characterization of the changes in operational parameters of electronic devices and for the evaluation of γ heating of MTR's structural materials in a representative reactor Γ spectrum. In this paper, we present ongoing work on γ field characterization both experimentally, by performing γ field measurements, and by simulations, using Monte Carlo particle transport codes in conjunction with R2S methodology for delayed γ field characterization.

  7. Identity's identities

    DEFF Research Database (Denmark)

    Jensen, Kim Ebensgaard

    -specialized language in which it also serves a number of functions – some of which are quite fundamental to society as such. In other words, the lexeme identity is a polysemic word and has multiple, well, identities. Given that it appears to have a number of functions in a variety of registers, including terminologies...... in Academic English and more everyday-based English, identity as a lexeme is definitely worth having a look at. This paper presents a lexicological study of identity in which some of its senses are identified and their behaviors in actual discourse are observed. Drawing on data from the 2011 section...... of the Corpus of Contemporary American English, a behavioral profile of the distributional characteristics of identity is set up. Behavioral profiling is a lexicographical method developed by the corpus linguist Stefan Th. Gries which, by applying semantic ID tagging and statistical analysis, provides a fine...

  8. Post-Communist Welfare Pathways

    DEFF Research Database (Denmark)

    Cerami, Alfio; Vanhuysse, Pieter

    . The authors' impressive analysis of causal factors, including political elites' strategic use of social policy, makes the book an original and important contribution to the comparative welfare state literature.'- Professor Linda J. Cook, Brown University“ 'This edited volume is extraordinarily good...... factors such as micro-causal mechanisms, ideas, discourses, path departures, power politics, and elite strategies. This book includes contributions from leading international Experts such as Claus Offe, Robert Kaufman, Stefan Haggard, Tomasz Inglot, and Mitchell Orenstein, to examine welfare in specific...... countries and across social policy domains. By providing a broad overview based on a theoretical foundation and drawing on recent empirical evidence, Post-Communist Welfare Pathways offers a comprehensive, state-of-the-art account of the progress that has been made since 1989, and the main challenges...

  9. XLAB

    DEFF Research Database (Denmark)

    Brandt, Eva; Redström, Johan; Eriksen, Mette Agger

    2011-01-01

    different from research of for example art history, media studies or anthropology. Nevertheless we see new research topics and new research methodologies emerge as designers begin to employ their professional gaze within the world of research. Research-through-design, practice-based research or design...... dialogue with Mads Quistgaard and Stefan Thorsteinsson from the Graphic Design Studio, Pleks, who have put their excellent skills in graphic design and visual communication to the task of making a book that discloses and evokes rather than argues and concludes. This should surely not be the only way......Over the last decade Danish schools of design and architecture have been embracing design research as a new venue for researchers, design educators and designers. The schools have moved slowly from the landscape of artisan professional educations towards a position within the larger landscape...

  10. The black hole quantum atmosphere

    Science.gov (United States)

    Dey, Ramit; Liberati, Stefano; Pranzetti, Daniele

    2017-11-01

    Ever since the discovery of black hole evaporation, the region of origin of the radiated quanta has been a topic of debate. Recently it was argued by Giddings that the Hawking quanta originate from a region well outside the black hole horizon by calculating the effective radius of a radiating body via the Stefan-Boltzmann law. In this paper we try to further explore this issue and end up corroborating this claim, using both a heuristic argument and a detailed study of the stress energy tensor. We show that the Hawking quanta originate from what might be called a quantum atmosphere around the black hole with energy density and fluxes of particles peaked at about 4 MG, running contrary to the popular belief that these originate from the ultra high energy excitations very close to the horizon. This long distance origin of Hawking radiation could have a profound impact on our understanding of the information and transplanckian problems.

  11. Signs, Systems and Complexity of Transmedia Storytelling

    Directory of Open Access Journals (Sweden)

    Renira Rampazzo Gambarato

    2012-12-01

    Full Text Available This article addresses key concepts such as sign, system and complexity in order to approach transmedia storytelling and better understand its intricate nature. The theoretical framework chosen to investigate transmedia storytelling meanders is Semiotics by Charles Sanders Peirce (1839-1914 and General Systems Theory by Mario Bunge (1919-. The complexity of transmedia storytelling is not simply the one of the signs of the works included in a transmedia franchise. It also includes the complexity of the dispositions of users/consumers/players as interpreters of semiotic elements (e.g. characters, themes, environments, events and outcomes presented by transmedia products. It extends further to the complexity of social, cultural, economical and political constructs. The German transmedia narrative The Ultimate SuperHero-Blog by Stefan Gieren and Sofia’s Diary, a Portuguese multiplatform production by BeActive, are presented as examples of closed and open system transmedia storytelling respectively.

  12. Graduate nuclear engineering programmes motivate educational and research activities

    International Nuclear Information System (INIS)

    Mavko, B.

    2000-01-01

    Some fifteen years ago the University of Ljubljana, Faculty for Mathematics and Physics together with the national research organisation the J. Stefan jointly established a Graduate programme of Nuclear Engineering. From the onset, the programme focused on nuclear technology, nuclear safety, and reactor physics and environment protection. Over the years this graduate programme has became the focal point of nuclear related, research and educational activities in Slovenia. It has grown into a meeting ground for recognised national and distinguished foreign educators and experienced professionals from the industry. In conjunction with an important national project, supported by the Slovenian government, entitled 'Jung Researcher' it also enhances the knowledge transfer to the next generation. Since the programme was introduced, the interest for this programme has been steadily growing. Accordingly, a number of PhD and MS degrees in NE have been awarded. The graduates of this programme have encountered very good job opportunities in nuclear as well as in non-nuclear sector. (author)

  13. Basic research using the 250 KW research reactor triga in Ljubljana, Yugoslavia

    International Nuclear Information System (INIS)

    Dimic, V.

    1983-01-01

    The 25 KW Triga Mark II reactor of J. 'Stefan Institute' was commissioned on May 1966. During the last two years, it has been operated for about 4200 hr/year. According to experience gained with the reactor, most of the cost of reactor operation will be earned through isotope production for local hospitals and industries, performing low cost applied experiments and organizing training courses. The rest was provided through the Research Communities of the Republic of Slovenia. The reactor has been operated for 15 years without major problems and many basic research programmes have been performed. The research is being conducted in the following mainfields: solid state physics, neutron dosimetry, neutron radiography and autoradiography, reactor physics, examination of nuclear fuel using gamma scanning, irradiation of semiconducting materials and neutron activation analysis. (A.J)

  14. Tritium Measurements in Slovenia - Chronology Till 2004

    International Nuclear Information System (INIS)

    Logar, Jasmina Kozar; Vaupotic, Janja; Kobal, Ivan

    2005-01-01

    Almost all the analyses of tritium in Slovenia have been performed by the tritium laboratory at the Jozef Stefan Institute. Nearly 90 % of its measurements have been covered by two national programs, both approved by the Slovenian Nuclear Safety Administration: the radioactive monitoring program in the environs of Krsko Nuclear Power Plant (KNPP) and the program of global radioactive contamination monitoring in the environment. These programs include samples of groundwaters, surface waters, precipitation and drinking waters, as well as liquid and gaseous effluents from KNPP. Tritium was determined in some research projects and in hydrological studies of thermal waters, groundwater and coalmine waters. Tritium in the Karst region was mapped as well as the springs of entire territory of Slovenia. Around 5500 samples have been analyzed up to 2004

  15. Proceedings of the International Conference Nuclear Energy for New Europe 2006

    International Nuclear Information System (INIS)

    Glumac, B.; Lengar, I.

    2006-01-01

    International Conference Nuclear Energy for New Europe is an annual meeting of the Nuclear Society of Slovenia. The conference is meant to address the prospects and the future of the nuclear energy in the world faced with the, now already very expressed, threat of the global warming. The conference evolved from annual conferences of Nuclear Society of Slovenia, which was first held in the alpine resort Bovec in 1992. The jubilee 15th conference was held and it was attended by 138 participants from 20 countries. Topics are: next generation reactor and fuels, reactor physics, reactor operation, nuclear materials, nuclear fusion and plasma technology, thermal hydraulics, probabilistic safety assessment, severe accidents, radiology and environment, radioactive waste and education, public relations and regulatory issues.The technical part of the program was complemented with a visit to Institute Jozef Stefan TRIGA reactor which in 2006 celebrated forty years of operation

  16. Comparison of Methods for Dependency Determination between Human Failure Events within Human Reliability Analysis

    International Nuclear Information System (INIS)

    Cepin, M.

    2008-01-01

    The human reliability analysis (HRA) is a highly subjective evaluation of human performance, which is an input for probabilistic safety assessment, which deals with many parameters of high uncertainty. The objective of this paper is to show that subjectivism can have a large impact on human reliability results and consequently on probabilistic safety assessment results and applications. The objective is to identify the key features, which may decrease subjectivity of human reliability analysis. Human reliability methods are compared with focus on dependency comparison between Institute Jozef Stefan human reliability analysis (IJS-HRA) and standardized plant analysis risk human reliability analysis (SPAR-H). Results show large differences in the calculated human error probabilities for the same events within the same probabilistic safety assessment, which are the consequence of subjectivity. The subjectivity can be reduced by development of more detailed guidelines for human reliability analysis with many practical examples for all steps of the process of evaluation of human performance

  17. ITER Plasma at Ion Cyclotron Frequency Domain: The Fusion Alpha Particles Diagnostics Based on the Stimulated Raman Scattering of Fast Magnetosonic Wave off High Harmonic Ion Bernstein Modes

    Science.gov (United States)

    Stefan, V. Alexander

    2014-10-01

    A novel method for alpha particle diagnostics is proposed. The theory of stimulated Raman scattering, SRS, of the fast wave and ion Bernstein mode, IBM, turbulence in multi-ion species plasmas, (Stefan University Press, La Jolla, CA, 2008). is utilized for the diagnostics of fast ions, (4)He (+2), in ITER plasmas. Nonlinear Landau damping of the IBM on fast ions near the plasma edge leads to the space-time changes in the turbulence level, (inverse alpha particle channeling). The space-time monitoring of the IBM turbulence via the SRS techniques may prove efficient for the real time study of the fast ion velocity distribution function, spatial distribution, and transport. Supported by Nikola Tesla Labs., La Jolla, CA 92037.

  18. Laser-Bioplasma Interaction: The Blood Type Transmutation Induced by Multiple Ultrashort Wavelength Laser Beams

    Science.gov (United States)

    Stefan, V. Alexander

    2015-11-01

    The interaction of ultrashort wavelength multi laser beams with the flowing blood thin films leads to the transmutation of the blood types A, B, and AB into O type. This is a novel mechanism of importance for the transfusion medicine. Laser radiation is in resonance with the eigen-frequency modes of the antigen proteins and forces the proteins to parametrically oscillate until they get kicked out from the surface. The stripping away of antigens is done by the scanning-multiple-lasers of a high repetition rate in the blue-purple frequency domain. The guiding-lasers are in the red-green frequency domain. The laser force, (parametric interaction with the antigen eigen-oscillation), upon the antigen protein molecule must exceed its weight. The scanning laser beam is partially reflected as long as the antigen(s) is not eliminated. The process of the protein detachment can last a few minutes. Supported by Nikola Tesla Labs., Stefan University.

  19. Laser-Bioplasma Interaction: Excitation and Suppression of the Brain Waves by the Multi-photon Pulsed-operated Fiber Lasers in the Ultraviolet Range of Frequencies

    Science.gov (United States)

    Stefan, V. Alexander; IAPS-team Team

    2017-10-01

    The novel study of the laser excitation-suppression of the brain waves is proposed. It is based on the pulsed-operated multi-photon fiber-laser interaction with the brain parvalbumin (PV) neurons. The repetition frequency matches the low frequency brain waves (5-100 Hz); enabling the resonance-scanning of the wide range of the PV neurons (the generators of the brain wave activity). The tunable fiber laser frequencies are in the ultraviolet frequency range, thus enabling the monitoring of the PV neuron-DNA, within the 10s of milliseconds. In medicine, the method can be used as an ``instantaneous-on-off anesthetic.'' Supported by Nikola Tesla Labs, Stefan University.

  20. Physics of the Brain. Prevention of the Epileptic Seizures by the Multi-photon Pulsed-operated Fiber Lasers in the Ultraviolet Range of Frequencies.

    Science.gov (United States)

    Stefan, V. Alexander; IAPS Team

    The novel study of the epileptogenesis mechanisms is proposed. It is based on the pulsed-operated (amplitude modulation) multi-photon (frequency modulation) fiber-laser interaction with the brain epilepsy-topion (the epilepsy onset area), so as to prevent the excessive electrical discharge (epileptic seizure) in the brain. The repetition frequency, Ω, matches the low frequency (epileptic) phonon waves in the brain. The laser repetition frequency (5-100 pulses per second) enables the resonance-scanning of the wide range of the phonon (possible epileptic-to-be) activity in the brain. The tunable fiber laser frequencies, Δω (multi photon operation), are in the ultraviolet frequency range, thus enabling monitoring of the electrical charge imbalance (within the 10s of milliseconds), and the DNA-corruption in the epilepsy-topion, as the possible cause of the disease. Supported by Nikola Tesla Labs., Stefan University.

  1. Conference Report: 18th Conference on Computer-Assisted Qualitative Data Analysis (CAQD 2016: MAXQDA User Conference

    Directory of Open Access Journals (Sweden)

    Carlos Galan-Diaz

    2017-01-01

    Full Text Available During the first week of March 2016, 120 researchers from 12 different countries, including Syria, Japan, the USA and Turkey, met in Berlin (Germany to learn more about their computer-assisted qualitative data analysis skills. The 18th Conference on Computer-Assisted Qualitative Data Analysis (CAQD offered several workshops, a research methods poster session, and the opportunity to share and discuss best practice between attendees, trainers and speakers (informally and through the user forum. The conference also hosted three seminal keynote speakers in two presentations: John CRESWELL, and Udo KUCKARTZ and Stefan RÄDIKER, who shared, respectively, the state of the art of mixed methods and the ways that software can support these approaches. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs170146

  2. Suurest paugust helge tulevikuni / Andri Ksenofontov

    Index Scriptorium Estoniae

    Ksenofontov, Andri, 1962-

    2009-01-01

    Kunstinäitustest Tallinnas: Kaia Kiige maalinäitus "Strata" galeriis Vaal 21. aprillini, Kaia Kiige ja Pascal Foucart'i (Pariis) maalinäitus Galeriis 008 22. aprillini, saksa skulptori Stefan Riebeli isikunäitus Raja Galeriis 30. märtsist 3. aprillini, soome kunstniku Aurora Reinhardi isikunäitus "Teaser" Tallinna Linnagaleriis 28. märtsist 12. aprillini, Andres Tali fotonäitus "Das Kapital. Kritik der politischen Ökonomie" Hobusepea Galeriis 1.-13. aprillini, Anna Škodenko isikunäitus "Idealistlik" Draakoni Galeriis 23. märtsist 4. aprillini, vene erakkunstniku Aleksandr Lobanovi tööde näitus Tallinna Kunstihoone Galeriis 19. aprillini

  3. Lecture 13: Control System Cyber Security

    CERN Multimedia

    CERN. Geneva

    2013-01-01

    Today, the industralized world lives in symbiosis with control systems: it depends on power distribution, oil production, public transport, automatic production lines. While the convenience is at hand, still too many control systems are designed without any security in mind, lack basic security protections, and are not even robust enough to withstand basic attacks. The Stuxnet worm attacking Siemens PLCs in 2010 was another close call. Attackers currently enjoy hacking control systems, and aim to switch lights off. This presentation shall recap the current situation and outline why the presenter is still waiting for a change in paradigm. Stefan Lüders, PhD, graduated from the Swiss Federal Institute of Technology in Zurich and joined CERN in 2002. Being initially developer of a common safety system used in all four experiments at the Large Hadron Collider, he gathered expertise in cyber-security issues of control systems. Consequently in 2004, he took over responsibilities in securing CERN's accelerator and...

  4. Transient heat characteristics of water-saturated porous media with freezing; Toketsu wo tomonau gansui takoshitsu sonai no hiteijo netsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Sasaki, A [Akita National College of Technology, Akita (Japan)

    1998-02-25

    Analytical and experimental investigations were performed to examine the transient heat characteristics of water-saturated porous media with freezing. As a physical model, a two-dimensional vertical cavity was considered. One vertical wall was abruptly cooled below the fusion temperature. Other three walls were thermally insulated. Three different sizes of glass, and iron, alumina and copper beads were used as the porous media in this study. The cold energy stored up in the porous media and the average thickness of frozen layer were measured in the experiments. Comparisons of the analytical results with the experimental ones were made, and the effects of Darcy number, Stefan number and modified Prandtl number on the transient heat characteristics were discussed. The dimensionless equations for predicting the averaged frozen layer thickness and the stored cold energy were obtained as a function of various dimensionless parameters. 8 refs., 16 figs., 1 tab.

  5. Aerodynamic features of flames in premixed gases

    Science.gov (United States)

    Oppenheim, A. K.

    1984-01-01

    A variety of experimentally established flame phenomena in premixed gases are interpreted by relating them to basic aerodynamic properties of the flow field. On this basis the essential mechanism of some well known characteristic features of flames stabilized in the wake of a bluff-body or propagating in ducts are revealed. Elementary components of the flame propagation process are shown to be: rotary motion, self-advancement, and expansion. Their consequences are analyzed under a most strict set of idealizations that permit the flow field to be treated as potential in character, while the flame is modelled as a Stefan-like interface capable of exerting a feed-back effect upon the flow field. The results provide an insight into the fundamental fluid-mechanical reasons for the experimentally observed distortions of the flame front, rationalizing in particular its ability to sustain relatively high flow velocities at amazingly low normal burning speeds.

  6. Epiphytic lichens as quantitative biomonitors for atmospheric element deposition

    International Nuclear Information System (INIS)

    Jeran, Z.; Jacimovic, J.; Smodis, B.; Batic, F.

    2000-01-01

    Epiphytic lichens are being used as passive and active biomonitors of trace elements in Slovenia. The lichen Hypogymnia physodes (L.) Nyl. was exposed at three locations (two in the vicinity of a coal fired-power plant, and one at a reference location) for 8 months. At the same locations air particulate matter and total deposition were collected on a monthly basis. The k 0 -method of neutron activation analysis, using the TRIGA Mark II reactor at the 'Jozef Stefan' Institute, was employed for multielemental nondestructive analysis of all samples. The influence of the power plant on the concentration levels of some elements in the transplanted lichens, air particulates and total deposition is discussed and their correlation presented. (author)

  7. Energy policy turnaround and agriculture. Proceedings; Energiewende und Landwirtschaft. Tagungsband

    Energy Technology Data Exchange (ETDEWEB)

    Wendl, Georg (ed.)

    2012-11-15

    Within the land-technical annual meeting at 22nd November, 2012 in the training centre of the Banz monastery (Bad Staffelstein, Federal Republic of Germany), the following lectures were held: (1) Opportunities and potentials of renewable energies in Bavaria (Rupert Schaefer); (2) Consumption of electricity and energy efficiency in agricultural operation (Stefan Neser); (3) Short-rotation plantations - Processes, efficiency and ecologic balance (Frank Burger); (4) Bavarian pilot plants for the production of biogas - Results from five years of monitoring (Mathias Effenberger); (5) Farm biomass conversion plants up to 75 kW - Opportunities and limits (Andreas Weber); (6) Photovoltaic power plants and wind power plants in the Bavarian agriculture - Where is it all going? (Johannes Graf); (7) Wind energy - Regional value creation by an area model and citizen's participation using an example in Creussen (district Bayreuth) (Harald Mild); (8) Regional power connecting using Hollfeld as an example (Markus Pirkelmann).

  8. Analytical solutions for benchmarking cold regions subsurface water flow and energy transport models: one-dimensional soil thaw with conduction and advection

    Science.gov (United States)

    Kurylyk, Barret L.; McKenzie, Jeffrey M; MacQuarrie, Kerry T. B.; Voss, Clifford I.

    2014-01-01

    Numerous cold regions water flow and energy transport models have emerged in recent years. Dissimilarities often exist in their mathematical formulations and/or numerical solution techniques, but few analytical solutions exist for benchmarking flow and energy transport models that include pore water phase change. This paper presents a detailed derivation of the Lunardini solution, an approximate analytical solution for predicting soil thawing subject to conduction, advection, and phase change. Fifteen thawing scenarios are examined by considering differences in porosity, surface temperature, Darcy velocity, and initial temperature. The accuracy of the Lunardini solution is shown to be proportional to the Stefan number. The analytical solution results obtained for soil thawing scenarios with water flow and advection are compared to those obtained from the finite element model SUTRA. Three problems, two involving the Lunardini solution and one involving the classic Neumann solution, are recommended as standard benchmarks for future model development and testing.

  9. Equation of state of quasi-free gluon gas

    International Nuclear Information System (INIS)

    Chakrabarty, Somenath; Syam, Debapriyo

    1993-01-01

    The object of this work is to derive an equation of state for a system of gluons beyond the deconfining temperature (∼200 MeV) with phenomenological applications in mind. Our starting point is the relativistic virial theorem. We assume that the non-Abelian nature of QCD (especially the confirming gluon-gluon interaction), as far as the gluon gas is concerned, can be accounted for by postulating a bag pressure (B), while the residual interaction among the gluons can be treated as if the problem is Abelian. Near the 'critical' temperature the residual interactions are seen to play an important role. Also the Stefan-Boltzmann constant is required to be replaced by an effective constant having a somewhat smaller value. (Author)

  10. Contemporary Research in Sports Economics

    DEFF Research Database (Denmark)

    This volume comprises scientific contributions in the context of the 5th annual conference of the European Association of Sports Economics (ESEA), which took place in September 2013 in Esbjerg, Denmark. It contains five articles on UEFA’s financial fair play regulation in European football, written...... by internationally renowned sports economists like Stefan Szymanski, Joel Maxcy and Sean Hamil. Moreover, a further three chapters deal with football topics like the dismissal of coaches or competitive balance. Furthermore, the economics of sports events – the Olympics as well as local events – are analyzed by well......-known scholars like Wladimir Andreff and Plácido Rodríguez. Next to team sports, new developments of the economics of individual sports like cycling, ski-jumping and motor-racing are explored....

  11. Dante deutsch: Riflessioni sulle traduzioni tedesche della ‘Divina Commedia’ nel Novecento (George e Borchardt

    Directory of Open Access Journals (Sweden)

    Thomas Klinkert

    2016-06-01

    Full Text Available Malgrado il pregiudizio secondo il quale la poesia in generale e la Divina Commedia in particolare sarebbero intraducibili, quest'ultima dal Settecento in poi è stata tradotta in tedesco – sia parzialmente che completamente – più di centosettanta volte. Non solo i romantici ma anche i filologi dell'Ottocento hanno contribuito in maniera decisiva a questa intensa ricezione. Nel Novecento la pratica della traduzione è stata portata avanti da due grandi poeti: Stefan George e Rudolf Borchardt. Un'analisi selettiva del primo canto dell’Inferno e delle traduzioni di George e Borchardt mostrerà alcune trasformazioni specifiche del testo dantesco a seconda delle scelte linguistiche dei due poeti.

  12. Multiparty Computations

    DEFF Research Database (Denmark)

    Dziembowski, Stefan

    here and discuss other problems caused by the adaptiveness. All protocols in the thesis are formally specified and the proofs of their security are given. [1]Ronald Cramer, Ivan Damgård, Stefan Dziembowski, Martin Hirt, and Tal Rabin. Efficient multiparty computations with dishonest minority......In this thesis we study a problem of doing Verifiable Secret Sharing (VSS) and Multiparty Computations in a model where private channels between the players and a broadcast channel is available. The adversary is active, adaptive and has an unbounded computing power. The thesis is based on two...... to a polynomial time black-box reduction, the complexity of adaptively secure VSS is the same as that of ordinary secret sharing (SS), where security is only required against a passive, static adversary. Previously, such a connection was only known for linear secret sharing and VSS schemes. We then show...

  13. A theoretical study on the accuracy of the T-history method for enthalpy–temperature curve measurement: analysis of the influence of thermal gradients inside T-history samples

    International Nuclear Information System (INIS)

    Mazo, Javier; Delgado, Mónica; Lázaro, Ana; Dolado, Pablo; Peñalosa, Conchita; Marín, José María; Zalba, Belén

    2015-01-01

    The present work analyses the effect of radial thermal gradients inside T-history samples on the enthalpy temperature curve measurement. A conduction heat transfer model has been utilized for this purpose. Some expressions have been obtained that relate the main dimensionless numbers of the experiments with the deviations in specific heat capacity, phase change enthalpy and phase change temperature estimations. Although these relations can only be strictly applied to solid materials (e.g. measurements of shape stabilized phase change materials), they can provide some useful and conservative bounds for the deviations of the T-history method. Biot numbers emerge as the most relevant dimensionless parameters in the accuracy of the specific heat capacity and phase change enthalpy estimation whereas this model predicts a negligible influence of the temperature levels used for the experiments or the Stefan number. (paper)

  14. Moving interfaces and quasilinear parabolic evolution equations

    CERN Document Server

    Prüss, Jan

    2016-01-01

    In this monograph, the authors develop a comprehensive approach for the mathematical analysis of a wide array of problems involving moving interfaces. It includes an in-depth study of abstract quasilinear parabolic evolution equations, elliptic and parabolic boundary value problems, transmission problems, one- and two-phase Stokes problems, and the equations of incompressible viscous one- and two-phase fluid flows. The theory of maximal regularity, an essential element, is also fully developed. The authors present a modern approach based on powerful tools in classical analysis, functional analysis, and vector-valued harmonic analysis. The theory is applied to problems in two-phase fluid dynamics and phase transitions, one-phase generalized Newtonian fluids, nematic liquid crystal flows, Maxwell-Stefan diffusion, and a variety of geometric evolution equations. The book also includes a discussion of the underlying physical and thermodynamic principles governing the equations of fluid flows and phase transitions...

  15. International design competition. Formula student Germany; Internationaler Konstruktionswettbewerb. Formula Student Germany

    Energy Technology Data Exchange (ETDEWEB)

    Liebl, Johannes; Siebenpfeiffer, Wolfgang (eds.)

    2011-11-15

    Within the International Design Competition 2011 at the Hockenheimring (Federal Republic of Germany) the following contributions were presented: (1) Formula Student Germany - Experience the Future (Tim Hannig); (2) Live at the Hockenheimring 2011; (3) Cutaway Model of the FSC Winning Car - The GFR11c by the Global Formula Racing Team of the DHBW Ravensburg; (4) Formula Student Racecar with Selective Cylinder Deactivation (Alexander Titz); (5) Construction of a crankshaft for the RS11 (Stefan Buhl); (6) The Wheel Design of the ARG 11 (Megan Rotondo); (7) Cutaway Model of the FSE Winning Car - The DUT11 by the DUT Racing Team of the Delft University of Technology; (8) Formula Student Electric - E-Scrutineering (Ann-Christin Bartoelke); (9) Development of an E-motor for Formular Student Electric (Urs Leuthold); (10) The Battery Management System of the FHWT04e (Andreas Hagemeyer); (11) Overall Results 2011 at a Glance; (12) Show your Colours; (13) Formula Student Germany visiting China (Alia Pierce).

  16. The first coronation churches of medieval Serbia

    Directory of Open Access Journals (Sweden)

    Kalić Jovanka

    2017-01-01

    Full Text Available The medieval ceremony of coronation as a rule took place in the most important church of a realm. The sites of the coronation of Serbian rulers before the establishment of the Žiča monastery church as the coronation church of Serbian kings in the first half of the thirteenth century have not been reliably identified so far. Based on the surviving medieval sources and the archaeological record, this paper provides background information about the titles of Serbian rulers prior to the creation of the Nemanjić state, and proposes that Stefan, son of the founder of the Nemanjić dynasty, was crowned king (1217 in the church of St Peter in Ras.

  17. Optimized construction of biogas plants; Optimierte Bauweise fuer Biogasanlagen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-09-19

    Within the conference of the International Trade Fair for Biogas Plant Technology at 21st February, 2012 in Berlin, the following lectures were held: (1) Optimized dimensions of containers for small systems of liquid manure (Manfred Thalmann); (2) Microferm mini biogas plants (Bart Brouwer); (3) Fermentation of stackable biomass in rural biogas plant - The DeNaBa system (Christian Deterding); (4) The Sauter Biogas System for the fermentation of liquid manure, solid dung, and other residual materials (Stefan Sauter); (5) Bio-electricity: Controllable power generation by means of biogas plants (Matthias Sonnleitner); (6) Reduction of the effort and increase of the yield using UDR fixed bed technology (Alfred van den Berg); (7) Prestressed concrete container for biogas plants: Area of application - quality - options (Harald Feldmann); (8) Corrosion protection of agricultural and communal biogas plants (Michael Normann); (9) Fundamentals of efficient and effective flow generation in biogas plants (Kay Rotalski); (10) Rotary piston screw pistons and eccentric screw pumps (Thorsten Gilles).

  18. Medical beam monitor—Pre-clinical evaluation and future applications

    Science.gov (United States)

    Frais-Kölbl, Helmut; Griesmayer, Erich; Schreiner, Thomas; Georg, Dietmar; Pernegger, Heinz

    2007-10-01

    Future medical ion beam applications for cancer therapy which are based on scanning technology will require advanced beam diagnostics equipment. For a precise analysis of beam parameters we want to resolve time structures in the range of microseconds to nanoseconds. A prototype of an advanced beam monitor was developed by the University of Applied Sciences Wiener Neustadt and its research subsidiary Fotec in co-operation with CERN RD42, Ohio State University and the Jožef Stefan Institute in Ljubljana. The detector is based on polycrystalline Chemical Vapor Deposition (pCVD) diamond substrates and is equipped with readout electronics up to 2 GHz analog bandwidth. In this paper we present the design of the pCVD-detector system and results of tests performed in various particle accelerator based facilities. Measurements performed in clinical high energy photon beams agreed within 1.2% with results obtained by standard ionization chambers.

  19. Medical beam monitor—Pre-clinical evaluation and future applications

    CERN Document Server

    Frais-Kölbl, H; Schreiner, T; Georg, D; Pernegger, H

    2007-01-01

    Future medical ion beam applications for cancer therapy which are based on scanning technology will require advanced beam diagnostics equipment. For a precise analysis of beam parameters we want to resolve time structures in the range of microseconds to nanoseconds. A prototype of an advanced beam monitor was developed by the University of Applied Sciences Wiener Neustadt and its research subsidiary Fotec in co-operation with CERN RD42, Ohio State University and the Jožef Stefan Institute in Ljubljana. The detector is based on polycrystalline Chemical Vapor Deposition (pCVD) diamond substrates and is equipped with readout electronics up to 2 GHz analog bandwidth. In this paper we present the design of the pCVD-detector system and results of tests performed in various particle accelerator based facilities. Measurements performed in clinical high energy photon beams agreed within 1.2% with results obtained by standard ionization chambers.

  20. Diffusion of Charged Species in Liquids

    Science.gov (United States)

    Del Río, J. A.; Whitaker, S.

    2016-11-01

    In this study the laws of mechanics for multi-component systems are used to develop a theory for the diffusion of ions in the presence of an electrostatic field. The analysis begins with the governing equation for the species velocity and it leads to the governing equation for the species diffusion velocity. Simplification of this latter result provides a momentum equation containing three dominant forces: (a) the gradient of the partial pressure, (b) the electrostatic force, and (c) the diffusive drag force that is a central feature of the Maxwell-Stefan equations. For ideal gas mixtures we derive the classic Nernst-Planck equation. For liquid-phase diffusion we encounter a situation in which the Nernst-Planck contribution to diffusion differs by several orders of magnitude from that obtained for ideal gases.

  1. ms 2: A molecular simulation tool for thermodynamic properties, release 3.0

    Science.gov (United States)

    Rutkai, Gábor; Köster, Andreas; Guevara-Carrion, Gabriela; Janzen, Tatjana; Schappals, Michael; Glass, Colin W.; Bernreuther, Martin; Wafai, Amer; Stephan, Simon; Kohns, Maximilian; Reiser, Steffen; Deublein, Stephan; Horsch, Martin; Hasse, Hans; Vrabec, Jadran

    2017-12-01

    A new version release (3.0) of the molecular simulation tool ms 2 (Deublein et al., 2011; Glass et al. 2014) is presented. Version 3.0 of ms 2 features two additional ensembles, i.e. microcanonical (NVE) and isobaric-isoenthalpic (NpH), various Helmholtz energy derivatives in the NVE ensemble, thermodynamic integration as a method for calculating the chemical potential, the osmotic pressure for calculating the activity of solvents, the six Maxwell-Stefan diffusion coefficients of quaternary mixtures, statistics for sampling hydrogen bonds, smooth-particle mesh Ewald summation as well as the ability to carry out molecular dynamics runs for an arbitrary number of state points in a single program execution.

  2. Use of boron nitride for neutron spectrum characterization and cross-section validation in the epithermal range through integral activation measurements

    Science.gov (United States)

    Radulović, Vladimir; Trkov, Andrej; Jaćimović, Radojko; Gregoire, Gilles; Destouches, Christophe

    2016-12-01

    A recent experimental irradiation and measurement campaign using containers made from boron nitride (BN) at the Jožef Stefan Institute (JSI) TRIGA Mark II reactor in Ljubljana, Slovenia, has shown the applicability of BN for neutron spectrum characterization and cross-section validation in the epithermal range through integral activation measurements. The first part of the paper focuses on the determination of the transmission function of a BN container through Monte Carlo calculations and experimental measurements. The second part presents the process of tayloring the sensitivity of integral activation measurements to specific needs and a selection of suitable radiative capture reactions for neutron spectrum characterization in the epithermal range. A BN container used in our experiments and its qualitative effect on the neutron spectrum in the irradiation position employed is displayed in the Graphical abstract.

  3. Public opinion about nuclear energy - year 2004 poll

    International Nuclear Information System (INIS)

    Istenic, R.; Jencic, I.

    2004-01-01

    Public information is one of the permanent activities of the Nuclear Training Centre Milan Copic at Jozef Stefan Institute in Ljubljana. It is focused on youngsters from elementary and high schools in Slovenia that visit the Centre as organized groups. Every year in the spring since 1993 some 800 youngsters are polled with basically the same set of questions inquiring about their knowledge and opinions on nuclear energy. Polling is performed at the beginning of the visit to obtain results based on information from everyday life. In the paper the results of this year's poll are presented and compared with the previous years. The attitude towards NPP Krsko is still favourable but the support has unexpectedly dropped from 83% to 73%. Misconceptions about dangers of nuclear energy and radioactive waste still remain high. (author)

  4. Comparison of methods for dependency determination between human failure events within human reliability analysis

    International Nuclear Information System (INIS)

    Cepis, M.

    2007-01-01

    The Human Reliability Analysis (HRA) is a highly subjective evaluation of human performance, which is an input for probabilistic safety assessment, which deals with many parameters of high uncertainty. The objective of this paper is to show that subjectivism can have a large impact on human reliability results and consequently on probabilistic safety assessment results and applications. The objective is to identify the key features, which may decrease of subjectivity of human reliability analysis. Human reliability methods are compared with focus on dependency comparison between Institute Jozef Stefan - Human Reliability Analysis (IJS-HRA) and Standardized Plant Analysis Risk Human Reliability Analysis (SPAR-H). Results show large differences in the calculated human error probabilities for the same events within the same probabilistic safety assessment, which are the consequence of subjectivity. The subjectivity can be reduced by development of more detailed guidelines for human reliability analysis with many practical examples for all steps of the process of evaluation of human performance. (author)

  5. An overview of results obtained in intercomparison exercises for determination of actinides

    International Nuclear Information System (INIS)

    Benedik, L.

    2013-01-01

    In recent years the Jožef Stefan Institute participated in numerous intercomparison exercises for determination of natural and man-made radionuclides. The reported values were mostly in good agreement with the resulting reference values. This paper describes an analysis of the measurement results obtained in intercomparison exercises for determination of actinides in the period from 2009 to 2011, organised by the National Physical Laboratory and the Bundesamt für Strahlenschutz. The review covers neptunium, plutonium and americium radioisotopes over this period. - Highlights: • The goal of this study is an overview of results obtained in intercomparison exercises for determination of actinides. • The disagreement of results for Np-237 was evaluated. • Improvements in separation procedures were done

  6. Theory of linear operations

    CERN Document Server

    Banach, S

    1987-01-01

    This classic work by the late Stefan Banach has been translated into English so as to reach a yet wider audience. It contains the basics of the algebra of operators, concentrating on the study of linear operators, which corresponds to that of the linear forms a1x1 + a2x2 + ... + anxn of algebra.The book gathers results concerning linear operators defined in general spaces of a certain kind, principally in Banach spaces, examples of which are: the space of continuous functions, that of the pth-power-summable functions, Hilbert space, etc. The general theorems are interpreted in various mathematical areas, such as group theory, differential equations, integral equations, equations with infinitely many unknowns, functions of a real variable, summation methods and orthogonal series.A new fifty-page section (``Some Aspects of the Present Theory of Banach Spaces'''') complements this important monograph.

  7. Computer Security: Security operations at CERN (4/4)

    CERN Document Server

    CERN. Geneva

    2012-01-01

    Stefan Lueders, PhD, graduated from the Swiss Federal Institute of Technology in Zurich and joined CERN in 2002. Being initially developer of a common safety system used in all four experiments at the Large Hadron Collider, he gathered expertise in cyber-security issues of control systems. Consequently in 2004, he took over responsibilities in securing CERN's accelerator and infrastructure control systems against cyber-threats. Subsequently, he joined the CERN Computer Security Incident Response Team and is today heading this team as CERN's Computer Security Officer with the mandate to coordinate all aspects of CERN's computer security --- office computing security, computer centre security, GRID computing security and control system security --- whilst taking into account CERN's operational needs. Dr. Lueders has presented on these topics at many different occasions to international bodies, governments, and companies, and published several articles. With the prevalence of modern information technologies and...

  8. Improved ZIF-8 membrane: Effect of activation procedure and determination of diffusivities of light hydrocarbons

    KAUST Repository

    Pan, Yichang; Liu, Wei; Zhao, Yingjie; Wang, Chongqing; Lai, Zhiping

    2015-01-01

    Zeolitic imidazolate framework ZIF-8 has shown great potential for effective separation of hydrocarbon mixtures based on its intrinsic ultramicroporous feature. In order to explore the permeation and diffusion properties of hydrocarbons through ZIF-8 membrane, high-quality ZIF-8 membranes with a separation factor of ~90 for propylene/propane are successfully prepared via optimizing the activation processes. Single-component permeation data for hydrocarbons (C1–C4) through the improved ZIF-8 membrane are measured and analyzed by Maxwell-Stefan (MS) model to get the transport diffusivities of these hydrocarbons. The diffusivity values of hydrocarbon compare well with those obtained by other experimental techniques. Binary mixture permeation also can be well predicted through single-component adsorption parameters.

  9. THE EFFECT OF ACCLIMATIZATION ON THE HEART RATE TO INCREASED ALTITUDE

    Directory of Open Access Journals (Sweden)

    Blaž Jereb

    2010-09-01

    Full Text Available The aim of the present study is to monitor heart rate (HR at real and at simulated altitude before and immediately after acclimatization, and one month after acclimatization. Six students of Faculty of Sport in Ljubljana (two women and four men participated in the study. They undergone 18-day long acclimatization process on 2100 - 5642 m. HR was measured during the step test at 300 m, 2100 m, and 3800 m (in a laboratory »Josef Stefan« Ljubljana, at simulated altitude. The results show that the HR decreased significant immediately after acclimatization comparing to the values before acclimatization. HR values returned to the values before acclimatization one month after acclimatization.

  10. Nye ledelsesudfordringer i forebyggelse af stress i videnarbejdet

    DEFF Research Database (Denmark)

    Andersen, Vibeke; Ipsen, Christine; Mogensen, Mette

    arbejdssituation og muligheder for forebyggelse af arbejdsrelateret stress i vidensarbejdet. – Et kvalitaivt studie af arbejdsrelateret stress i vidensarbejdet. Lyngby, The Technical University of Denmark. Kärreman, Dan, Stefan Svenningson and Mats Alvesson (2003): The Return of the Machine Bureaucracy? Management......Afsættet for projektet ”Forebyggelse af stress i videnarbejdet – mellem begejstring og belastning” er, at der er behov for en ny forståelse af stress i det moderne arbejdsliv, for at kunne arbejde med stressforebyggelse blandt videnarbejdere. I dette paper tager vi udgangspunkt i begrebet...... mangetydighed/ambiguity som en karakteristik af videnarbejdet, da det stiller nogle helt nye udfordringer til hvordan ledelse af videnarbejdet skal foregå, når målet er at forebygge arbejdsrelateret stress. Vi karakteriserer videnarbejdet som mangetydigt og som Alvesson (2004) påpeger, udgør dilemmaerne i...

  11. Physical model of reactor pulse

    International Nuclear Information System (INIS)

    Petrovic, A.; Ravnik, M.

    2004-01-01

    Pulse experiments have been performed at J. Stefan Institute TRIGA reactor since 1991. In total, more than 130 pulses have been performed. Extensive experimental information on the pulse physical characteristics has been accumulated. Fuchs-Hansen adiabatic model has been used for predicting and analysing the pulse parameters. The model is based on point kinetics equation, neglecting the delayed neutrons and assuming constant inserted reactivity in form of step function. Deficiencies of the Fuchs-Hansen model and systematic experimental errors have been observed and analysed. Recently, the pulse model was improved by including the delayed neutrons and time dependence of inserted reactivity. The results explain the observed non-linearity of the pulse energy for high pulses due to finite time of pulse rod withdrawal and the contribution of the delayed neutrons after the prompt part of the pulse. The results of the improved model are in good agreement with experimental results. (author)

  12. Isothermal temperature reactivity coefficient measurement in TRIGA reactor

    International Nuclear Information System (INIS)

    Zagar, T.; Ravnik, M.; Trkov, A.

    2002-01-01

    Direct measurement of an isothermal temperature reactivity coefficient at room temperatures in TRIGA Mark II research reactor at Jozef Stefan Institute in Ljubljana is presented. Temperature reactivity coefficient was measured in the temperature range between 15 o C and 25 o C. All reactivity measurements were performed at almost zero reactor power to reduce or completely eliminate nuclear heating. Slow and steady temperature decrease was controlled using the reactor tank cooling system. In this way the temperatures of fuel, of moderator and of coolant were kept in equilibrium throughout the measurements. It was found out that TRIGA reactor core loaded with standard fuel elements with stainless steel cladding has small positive isothermal temperature reactivity coefficient in this temperature range.(author)

  13. Determination of source term for Krsko NPP extended fuel cycle

    International Nuclear Information System (INIS)

    Nemec, T.; Persic, A.; Zagar, T.; Zefran, B.

    2004-01-01

    The activity and composition of the potential radioactive releases (source term) is important in the decision making about off-site emergency measures in case of a release into environment. Power uprate of Krsko NPP during modernization in 2000 as well as changing of the fuel type and the core design have influenced the source term value. In 2003 a project of 'Jozef Stefan' Institute and Slovenian nuclear safety administration determined a plantspecific source term for new conditions of fuel type and burnup for extended fuel cycle. Calculations of activity and isotopic composition of the core have been performed with ORIGEN-ARP program. Results showed that the core activity for extended 15 months fuel cycle is slightly lower than for the 12 months cycles, mainly due to larger share of fresh fuel. (author)

  14. Improved ZIF-8 membrane: Effect of activation procedure and determination of diffusivities of light hydrocarbons

    KAUST Repository

    Pan, Yichang

    2015-06-23

    Zeolitic imidazolate framework ZIF-8 has shown great potential for effective separation of hydrocarbon mixtures based on its intrinsic ultramicroporous feature. In order to explore the permeation and diffusion properties of hydrocarbons through ZIF-8 membrane, high-quality ZIF-8 membranes with a separation factor of ~90 for propylene/propane are successfully prepared via optimizing the activation processes. Single-component permeation data for hydrocarbons (C1–C4) through the improved ZIF-8 membrane are measured and analyzed by Maxwell-Stefan (MS) model to get the transport diffusivities of these hydrocarbons. The diffusivity values of hydrocarbon compare well with those obtained by other experimental techniques. Binary mixture permeation also can be well predicted through single-component adsorption parameters.

  15. Numerical analysis of melting/solidification phenomena using a moving boundary problem analysis method X-FEM

    International Nuclear Information System (INIS)

    Uchibori, Akihiro; Ohshima, Hiroyuki

    2008-01-01

    A numerical analysis method for melting/solidification phenomena has been developed to evaluate a feasibility of several candidate techniques in the nuclear fuel cycle. Our method is based on the eXtended Finite Element Method (X-FEM) which has been used for moving boundary problems. Key technique of the X-FEM is to incorporate signed distance function into finite element interpolation to represent a discontinuous gradient of the temperature at a moving solid-liquid interface. Construction of the finite element equation, the technique of quadrature and the method to solve the equation are reported here. The numerical solutions of the one-dimensional Stefan problem, solidification in a two-dimensional square corner and melting of pure gallium are compared to the exact solutions or to the experimental data. Through these analyses, validity of the newly developed numerical analysis method has been demonstrated. (author)

  16. The hunting season’s over

    CERN Document Server

    2014-01-01

    Hundreds of Internet users from across the globe have been scouring the Computer Centre for LEGO figurines in recent weeks (see here). The time has come to announce the results…   We’ve received nearly 5,000 screen-shots, the precious trophies gleaned from hours of virtual scavenging through the CERN Computing Centre, and we’re pleased to see our hunt raised so much interest. Unfortunately, rules being rules, we have to choose the two winners by drawing lots, so prizes will be winging their way to… Sarah Charley (CERN) Stefan Hayes We kindly thank everyone who took part in the hunt with so much gusto and hope you all had as much fun as we did! You can discover all the figurines here: http://lego-scavenger-hunt.web.cern.ch/ The CERN Bulletin team

  17. CORDSPW - Windows computer program package for graphical interpretation of CORD-2 data

    International Nuclear Information System (INIS)

    Slavic, S.; Kromar, M.

    2007-01-01

    The CORD-2 package, developed at Jozef Stefan Institute, enables determination of the core power distribution and reactivity. Core distributions data generated during the calculation process are stored in CORlib files. CORDSP code, which is a part of the CORD-2 package, displays and compares data contained in CORlib files. Since it runs in the DOS environment, there are several limitations in the presentation of desired data. A CORDSPW package runs in the Windows environment and offers better graphical interpretation of the CORlib data. Core distributions can be displayed, compared, rewritten in the new files and sent to the printer. The user can select the appropriate display of the presented data such as core symmetry, colour and fonts. Core radial and axial distributions can be presented and compared. There are several options to store and print data. The user can choose between standard ASCII and graphical JPG format. (author)

  18. [PREHISTORY IN THE WORK AND WRITINGS OF KAROL LIBELT].

    Science.gov (United States)

    Linetty, Jakub

    2015-01-01

    Prehistoric archaeology constituted an important topic in the writings of Karol Libelt during the final stage of his work. As a result of several years' research and bringing up this subject in his texts, Libelt made notable achievements in the field of prehistoric archaeology. The most important of them are: description of archaeological discoveries in Czeszewo, participation in a dispute over prehistoric chronology with Stefan Pawlicki in 1871, and also one of the first descriptions of the Stone Age in the Polish literature. Thus Libelt should be considered as a pioneer in prehistoric research, particularly the Stone Age, in Poland. Apart from that, among his undoubted achievements was propagation of the theory of evolution, although with reservations, during the earliest stage of Darwinism's reception in Poland.

  19. THE ROLE OF UNIVERSITIES IN THE DEVELOPMENT OF BUSINESS TOURISM

    Directory of Open Access Journals (Sweden)

    Gabriela Arionesei

    2015-02-01

    Full Text Available In this paper, we investigated the relationship between business tourism and universities, as important factors in the development of a country’s economy. Even though in Romania, business tourism takes place at a slower pace than in other European states, being at an incipient level, it represents a good opportunity for development, since it is the one of the growing and efficient component in the tourism industry, based on the income of urban hotels. Our case-study presents Suceava County having “Stefan cel Mare” University as a research pole that attracts tourists from different countries. The S.W.O.T. analysis we realized gave us the possibility to match strengths and weaknesses against the real threats and recommend some directions for the organization of impact events in the tourism sector.

  20. Model for melt blockage (slug) relocation and physico-chemical interactions during core degradation under severe accident conditions

    International Nuclear Information System (INIS)

    Veshchunov, M.S.; Shestak, V.E.

    2008-01-01

    The model describing massive melt blockage (slug) relocation and physico-chemical interactions with steam and surrounding fuel rods of a bundle is developed on the base of the observations in the CORA tests. Mass exchange owing to slug oxidation and fuel rods dissolution is described by the previously developed 2D model for the molten pool oxidation. Heat fluxes in oxidising melt along with the oxidation heat effect at the melt relocation front are counterbalanced by the heat losses in the surrounding media and the fusion heat effect of the Zr claddings attacked by the melt. As a result, the slug relocation velocity is calculated from the heat flux matches at the melt propagation front (Stefan problem). A numerical module simulating the slug behaviour is developed by tight coupling of the heat and mass exchange modules. The new model demonstrates a reasonable capability to simulate the main features of the massive slug behaviour observed in the CORA-W1 test

  1. Public opinion about nuclear energy - year 2003 poll

    International Nuclear Information System (INIS)

    Istenic, R.; Jencic, I.

    2003-01-01

    Nuclear Training Centre Milan Copic at Jozef Stefan Institute in Ljubljana is performing extensive public information activities, focused mainly on elementary and high schools in Slovenia. There are over 7000 visitors yearly. Every year in the spring we ask several hundred of visitors the same set of questions about their knowledge and opinion about nuclear energy. They are polled before they listen to the lecture or visit the exhibition. In that way we are trying to obtain their opinion based on the knowledge they obtain in everyday life. In the paper the results of this year's poll are presented and compared with the previous years. No significant changes in public opinion were observed this year. Favourable attitude towards NPP Krsko, which could be observed in the last years, is maintained. On the other hand, misconceptions about radioactive waste repositories and danger of radioactive waste remain very high. (author)

  2. I have to have a mask, a mad mask”. Polemicising with Maria Anna Potocka

    Directory of Open Access Journals (Sweden)

    Stefan Okołowicz

    2010-01-01

    Full Text Available Polemicising with Maria A. Potocka’s view, the author reflects on the problem of mask and facial expression in the life and work of S.I. Witkiewicz. They appear here as an expression of philosophy of man, a specific feature of the personality of the author of Szewcy [The Shoemakers] whose whole life, artistic and philosophical activity was marked by “facial expression”. The article also reminds the unusually important texts of Stefan Szuman, Witkacy’s friend, who points to the essence of Witkacy’s portraits. The last question discussed in this article is the problem of ascribing to Witkacy of the authorship of most of the photographs in which he is presented (since they are a documentation of his artistic creations while actually the authors of these photographs are a dozen or so photographer friends of Witkacy.

  3. A boundary integral approach to unstable solidification

    International Nuclear Information System (INIS)

    Strain, J.

    1989-01-01

    We consider the supercooled Stefan problem with a general anisotropic curvature- and velocity-dependent boundary condition on the moving interface. We present numerical methods, based on an integral equation formulation and including a new algorithm for moving curves with curvature-dependent velocity. These methods compute a periodic interface with O(Δt) accuracy, where Δt is the time step. Previous work has been limited to short time spans and achieved slightly less than O(Δt 1/2 ) accuracy. Accurate numerical results are seen to agree with the predictions of linear stability theory. This agreement has eluded previous authors, because their numerical methods suffered from grid effects and their linear stability theory was incorrect. We study the long-time evolution of an unstable interface. Our computations exhibit the beginnings of a sidebranching instability when the boundary condition includes anisotropy and tip-splitting in the isotropic case. copyright 1989 Academic Press, Inc

  4. CERN tests reveal security flaws with industrial network devices

    CERN Document Server

    Lüders, Stefan

    2006-01-01

    The CERN high energy particle physics facility at Geneva, Switzerland will incorporate a wide range of COTS industrial control systems within its next generation particle collider, the LHC. In particular, the Internet will be used to facilitate the remote access for accelerator and particle physicists and system experts based at several hundred locations around the globe. The integration of Industrial Ethernet and COTS PLCs within the LHC program focuses extreme attention on the industrial network cyber-security requirement. CERN's response has been to conduct operational research on the security resilience of networked industrial devices. As test team lead Stefan Lüders reports here, industrial networked devices put through the organisation's test procedures have generally shown up unexpected vulnerabilities.

  5. Algunos métodos para la solución de problemas de la física-matemática

    Directory of Open Access Journals (Sweden)

    R Quintero

    2016-03-01

    Full Text Available En este trabajo, se exponen algunos métodos para la solución de problemas de frontera, en regiones donde esta frontera es desconocida y se encuentra en movimiento (problema tipo Stefan. Como ejemplo se resuelve analíticamente el problema de congelamiento de un suelo húmedo. Brevemente se exponen algunos conceptos y resultados de la teoría de funciones generalizadas pertinentes a esta investigación, procediendo luego, al planteo del citado problema del congelamiento de un suelo húmedo como un problema generalizado de Cauchy y a su correspondiente solución. Se expone también un método  numérico de solución.

  6. The Pressure in 2, 2+1 and 3 Flavour QCD

    CERN Document Server

    Karsch, Frithjof; Peikert, A

    2000-01-01

    We calculate the pressure in QCD with two and three light quarks on a latticeof size 16^3x4 using tree level improved gauge and fermion actions. We arguethat for temperatures T > 2T_c systematic effects due to the finite latticecut-off and non-vanishing quark masses are below 15 0n this calculation andgive an estimate for the continuum extrapolated pressure in QCD with masslessquarks. We find that the flavour dependence of the pressure is dominated bythat of the Stefan-Boltzmann constant. Furthermore we perform a calculation ofthe pressure using 2 light (m_u,d/T=0.4) and one heavier quark (m_s/T = 1). Inthis case the pressure is reduced relative to that of three flavour QCD. Thiseffect is stronger than expected from the mass dependence of an ideal Fermigas.

  7. Introduction to geometric nonlinear control; Controllability and lie bracket

    Energy Technology Data Exchange (ETDEWEB)

    Jakubczyk, B [Institute of Mathematics, Polish Academy of Sciences, Warsaw (Poland)

    2002-07-15

    We present an introduction to the qualitative theory of nonlinear control systems, with the main emphasis on controllability properties of such systems. We introduce the differential geometric language of vector fields, Lie bracket, distributions, foliations etc. One of the basic tools is the orbit theorem of Stefan and Sussmann. We analyse the basic controllability problems and give criteria for complete controllability, accessibility and related properties, using certain Lie algebras of ve fields defined by the system. A problem of path approximation is considered as an application of the developed theory. We illustrate our considerations with examples of simple systems or systems appearing in applications. The notes start from an elementary level and are self-contained. (author)

  8. End of Interactive Emailing from the Technical Network

    CERN Multimedia

    2006-01-01

    According to the CNIC Security Policy for Control Systems (EDMS #584092), interactive emailing on PCs (and other devices) connected to the Technical Network is prohibited. Please note that from November 6th, neither reading emails nor sending emails interactively using e.g. Outlook or Pine mail clients on PCs connected to the Technical Network will be possible anymore. However, automatically generated emails will not be blocked and can still be sent off using CERNMX.CERN.CH as mail server. These restrictions DO NOT apply to PCs connected to any other network, like the General Purpose (or office) network. If you have questions, please do not hesitate to contact Uwe Epting, Pierre Charrue or Stefan Lueders (Technical-Network.Administrator@cern.ch). Your CNIC Working Group

  9. Present Services at the TRIGA Mark II Reactor of the JSI

    International Nuclear Information System (INIS)

    Smodiš, B.; Snoj, L.

    2013-01-01

    The TRIGA Mark II research reactor of the Jožef Stefan Institute has been continuously operating since the year 1966. The currently offered services include: (1) Neutron activation analysis in both instrumental and radiochemical modes; (2) neutron irradiation of various kinds of materials intended to be used for research and applicative purposes; (3) training and education of university students as well as on-job training of staff working in public and private institutions, (4) verification of computer codes and nuclear data, comprising primarily criticality calculations and neutron flux distribution studies and (5) testing and development of a digital reactivity meter. The paper briefly describes the aforementioned activities and shows that even such small reactors are still indispensable in nuclear science and technology. (author)

  10. Verification of Monte Carlo calculations of the neutron flux in the carousel channels of the TRIGA Mark II reactor, Ljubljana

    International Nuclear Information System (INIS)

    Jacimovic, R.; Maucec, M.; Trkov, A.

    2002-01-01

    In this work experimental verification of Monte Carlo neutron flux calculations in the carousel facility (CF) of the 250 kW TRIGA Mark II reactor at the Jozef Stefan Institute is presented. Simulations were carried out using the Monte Carlo radiation-transport code, MCNP4B. The objective of the work was to model and verify experimentally the azimuthal variation of neutron flux in the CF for core No. 176, set up in April 2002. '1'9'8Au activities of Al-Au(0.1%) disks irradiated in 11 channels of the CF covering 180'0 around the perimeter of the core were measured. The comparison between MCNP calculation and measurement shows relatively good agreement and demonstrates the overall accuracy with which the detailed spectral characteristics can be predicted by calculations.(author)

  11. Medizinbibliotheken: inter:disziplinär – inter:national –inter:aktiv

    Directory of Open Access Journals (Sweden)

    Bauer, Bruno

    2017-12-01

    Full Text Available The focus of the current issue 3/2017 of GMS Medizin – Bibliothek – Information is the annual conference 2017 of the German Medical Libraries Association in Vienna. The motto of the conference was “Medical Libraries: inter:disciplinary – inter:national – inter:active”. The authors in this issue are Bruno Bauer (Austrian Transition to Open Access 2017–2020, Beata Górczynska (Development and structure of Polish veterinary school system and its libraries, Katharina Heldt, Henriette Senst & Jessica Riedel (Salon on the institute’s history: outstanding artifacts. 28.01.2016 to 15.12.2016, Jutta Matrisciano, Martina Semmler-Schmetz & Saskia Rohmer (Advice – From info snack to special menu: Solutions of the MedMA-Bib, Stefan Nortmann (The ‘Ersti-Café’ of the Medical Branch Library Münster, Sandra Rümmele (Toolbox: The new teaching library project of the Central Medical Library of the University Medical Center Hamburg-Eppendorf, Eva Seidlmayer & Christoph Poley (One Health – Transdisciplinarity at ZB MED and Heike Andermann (“Medical Libraries: inter:disciplinary – inter:national – inter:active”. Annual Meeting of the German Medical Library Association (AGMB, September 25 to 27, 2017 in Vienna. Furthermore this focus issue features articles from Stefan Grün & Christoph Poley (Statistical evaluation of semantic entities from metadata and full text on German Medical Science corpora and Iris Reimann (German MLA News; Competition of the German MLA Pioneer projects in medical libraries 2017: Introduction of the winners; Competition of the German MLA (AGMB Pioneer projects in medical libraries 2018 – Announcement.

  12. Steady-State Diffusion of Water through Soft-Contact LensMaterials

    Energy Technology Data Exchange (ETDEWEB)

    Fornasiero, Francesco; Krull, Florian; Radke, Clayton J.; Prausnitz, JohnM.

    2005-01-31

    Water transport through soft contact lenses (SCL) is important for acceptable performance on the human eye. Chemical-potential gradient-driven diffusion rates of water through soft-contact-lens materials are measured with an evaporation-cell technique. Water is evaporated from the bottom surface of a lens membrane by impinging air at controlled flow rate and humidity. The resulting weight loss of a water reservoir covering the top surface of the contact-lens material is recorded as a function of time. New results are reported for a conventional hydrogel material (SofLens{trademark} One Day, hilafilcon A, water content at saturation W{sub 10} = 70 weight %) and a silicone hydrogel material (PureVision{trademark}, balafilcon A, W{sub 10} = 36 %), with and without surface oxygen plasma treatment. Also, previously reported data for a conventional HEMA-SCL (W{sub 10} = 38 %) hydrogel are reexamined and compared with those for SofLens{trademark} One Day and PureVision{trademark} hydrogels. Measured steady-state water fluxes are largest for SofLens{trademark} One Day, followed by PureVision{trademark} and HEMA. In some cases, the measured steady-state water fluxes increase with rising relative air humidity. This increase, due to an apparent mass-transfer resistance at the surface (trapping skinning), is associated with formation of a glassy skin at the air/membrane interface when the relative humidity is below 55-75%. Steady-state water-fluxes are interpreted through an extended Maxwell-Stefan diffusion model for a mixture of species starkly different in size. Thermodynamic nonideality is considered through Flory-Rehner polymer-solution theory. Shrinking/swelling is self-consistently modeled by conservation of the total polymer mass. Fitted Maxwell-Stefan diffusivities increase significantly with water concentration in the contact lens.

  13. Rigorous Multicomponent Reactive Separations Modelling: Complete Consideration of Reaction-Diffusion Phenomena

    International Nuclear Information System (INIS)

    Ahmadi, A.; Meyer, M.; Rouzineau, D.; Prevost, M.; Alix, P.; Laloue, N.

    2010-01-01

    This paper gives the first step of the development of a rigorous multicomponent reactive separation model. Such a model is highly essential to further the optimization of acid gases removal plants (CO 2 capture, gas treating, etc.) in terms of size and energy consumption, since chemical solvents are conventionally used. Firstly, two main modelling approaches are presented: the equilibrium-based and the rate-based approaches. Secondly, an extended rate-based model with rigorous modelling methodology for diffusion-reaction phenomena is proposed. The film theory and the generalized Maxwell-Stefan equations are used in order to characterize multicomponent interactions. The complete chain of chemical reactions is taken into account. The reactions can be kinetically controlled or at chemical equilibrium, and they are considered for both liquid film and liquid bulk. Thirdly, the method of numerical resolution is described. Coupling the generalized Maxwell-Stefan equations with chemical equilibrium equations leads to a highly non-linear Differential-Algebraic Equations system known as DAE index 3. The set of equations is discretized with finite-differences as its integration by Gear method is complex. The resulting algebraic system is resolved by the Newton- Raphson method. Finally, the present model and the associated methods of numerical resolution are validated for the example of esterification of methanol. This archetype non-electrolytic system permits an interesting analysis of reaction impact on mass transfer, especially near the phase interface. The numerical resolution of the model by Newton-Raphson method gives good results in terms of calculation time and convergence. The simulations show that the impact of reactions at chemical equilibrium and that of kinetically controlled reactions with high kinetics on mass transfer is relatively similar. Moreover, the Fick's law is less adapted for multicomponent mixtures where some abnormalities such as counter

  14. Biodegradable congress 2012; Bioschmierstoff-Kongress 2012

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-11-01

    Within the Guelzower expert discussions at 5th and 6th June, 2012 in Oberhausen (Federal Republic of Germany) the following lectures were held: (1) Promotion of biodegradable lubricants by means of research and development as well as public relations (Steffen Daebeler); (2) Biodegradable lubricants - An overview of the advantages and disadvantages of the engaged product groups (Hubertus Murrenhoff); (3) Standardization of biodegradable lubricants - CEN/DIN standard committees - state of the art (Rolf Luther); (4) Market research for the utilization of biodegradable lubricants and means of proof of sustainability (Norbert Schmitz); (5) Fields of application for high performance lubricants and requirements upon the products (Gunther Kraft); (6) Investigations of biodegradable lubricants in rolling bearings and gears (Christoph Hentschke); (7) Biodegradable lubricants in central lubrication systems Development of gears and bearings of offshore wind power installations (Reiner Wagner); (8) Investigations towards environmental compatibility of biodegradable lubricants used in offshore wind power installations (Tolf Schneider); (9) Development of glycerine based lubricants for the industrial metalworking (Harald Draeger); (10) Investigations and utilization of biodegradable oils as electroinsulation oils in transformers (Stefan Tenbohlen); (11) Operational behaviour of lubricant oils in vegetable oil operation and Biodiesel operation (Horst Hamdorf); (12) Lubrication effect of lubricating oil of the third generation (Stefan Heitzig); (13) Actual market development from the view of a producer of biodegradable lubricants (Frank Lewen); (14) Utilization of biodegradable lubricants in forestry harvesters (Guenther Weise); (15) New biodegradable lubricants based on high oleic sunflower oil (Otto Botz); (16) Integrated fluid concept - optimized technology and service package for users of biodegradable lubricants (Juergen Baer); (17) Utilization of a bio oil sensor to control

  15. On the radiative and thermodynamic properties of the cosmic radiations using COBE FIRAS instrument data: I. Cosmic microwave background radiation

    Science.gov (United States)

    Fisenko, Anatoliy I.; Lemberg, Vladimir

    2014-07-01

    Using the explicit form of the functions to describe the monopole and dipole spectra of the Cosmic Microwave Background (CMB) radiation, the exact expressions for the temperature dependences of the radiative and thermodynamic functions, such as the total radiation power per unit area, total energy density, number density of photons, Helmholtz free energy density, entropy density, heat capacity at constant volume, and pressure in the finite range of frequencies v 1≤ v≤ v 2 are obtained. Since the dependence of temperature upon the redshift z is known, the obtained expressions can be simply presented in z representation. Utilizing experimental data for the monopole and dipole spectra measured by the COBE FIRAS instrument in the 60-600 GHz frequency interval at the temperature T=2.72548 K, the values of the radiative and thermodynamic functions, as well as the radiation density constant a and the Stefan-Boltzmann constant σ are calculated. In the case of the dipole spectrum, the constants a and σ, and the radiative and thermodynamic properties of the CMB radiation are obtained using the mean amplitude T amp=3.358 mK. It is shown that the Doppler shift leads to a renormalization of the radiation density constant a, the Stefan-Boltzmann constant σ, and the corresponding constants for the thermodynamic functions. The expressions for new astrophysical parameters, such as the entropy density/Boltzmann constant, and number density of CMB photons are obtained. The radiative and thermodynamic properties of the Cosmic Microwave Background radiation for the monopole and dipole spectra at redshift z≈1089 are calculated.

  16. Moses as a role model in the Serbia charters after 1371 changing patterns

    Directory of Open Access Journals (Sweden)

    Vujošević Žarko

    2008-01-01

    Full Text Available The aspects of the Old Testament figure of Moses highlighted in the charters of post-Nemanjić Serbia, or under the Lazarević and Branković dynasties (1371-1459, testify to a changed attitude towards Old Testament role models. While members of the Nemanjić house such as the archbishop Sava I and the rulers Stefan of Dečani and Dušan look up to Moses as a "religious leader", a prayerful intercessor before God and a victorious warrior, all of that for the sake of the "chosen" people, the role he is assigned in the arengae of the charters issued by prince Lazar and despots Stefan Lazarević and Đurađ Branković is completely different. In the universal Christian context of the post-1371 arengae Moses figures as a "prophet" and the builder of the Tabernacle - a prefiguration of the Church, thereby epitomizing a major stage in the salvation history of humankind. The role of Moses, as well as that of David, the only other Old Testament figure still referred to in the charters of the period, has a universal ecclesiologically interpreted, significance. This new pattern of interpreting Moses implies that the ruler’s main virtue now becomes his concern for the "true faith" and the houses of God. The practice of the Nemanjićs as regards selection and interpretation of Old Testament themes is reestablished by the titular despots of the Branković dynasty. In their charters, the first part of the Bible with Moses as a popular leader reassumes a "national" character and becomes part of the ideological apparatus intended to posit the Serbs as a "New Israel".

  17. Barriers and Facilitators to eHealth Use in Daily Practice: Perspectives of Patients and Professionals in Dermatology.

    Science.gov (United States)

    Ariens, Lieneke Fm; Schussler-Raymakers, Florine Ml; Frima, Cynthia; Flinterman, Annebeth; Hamminga, Eefje; Arents, Bernd Wm; Bruijnzeel-Koomen, Carla Afm; de Bruin-Weller, Marjolein S; van Os-Medendorp, Harmieke

    2017-09-05

    The number of eHealth interventions in the management of chronic diseases such as atopic dermatitis (AD) is growing. Despite promising results, the implementation and use of these interventions is limited. This study aimed to assess opinions of the most important stakeholders influencing the implementation and use of eHealth services in daily dermatology practice. The perspectives of health care professionals and patients towards the implementation and use of eHealth services in daily practice were assessed by using a mixed method design. A cross-sectional survey based on the eHealth implementation toolkit (eHit) was conducted to explore factors influencing the adoption of eHealth interventions offering the possibility of e-consultations, Web-based monitoring, and Web-based self-management training among dermatologists and dermatology nurses. The perspectives of patients with atopic dermatitis (AD) regarding the use of eHealth services were discussed in an online focus group. Health care professionals (n=99) and patients (n=9) acknowledged the value of eHealth services and were willing to use these digital tools in daily dermatology practice. Key identified barriers (statements with eHealth interventions included concerns about the availability (12/99, 12%) and allocation (14/99, 14%) of resources, financial aspects (26/99, 26%), reliability, security, and confidentially of the intervention itself (29/99, 29%), and the lack of education and training (6/99, 6%). Health care professionals and patients acknowledge the benefits arising from the implementation and use of eHealth services in daily dermatology practice. However, some important barriers were identified that might be useful in addressing the implementation strategy in order to enhance the implementation success of eHealth interventions in dermatology. ©Lieneke FM Ariens, Florine ML Schussler-Raymakers, Cynthia Frima, Annebeth Flinterman, Eefje Hamminga, Bernd WM Arents, Carla AFM Bruijnzeel

  18. PREFACE: 10th International Conference on Materials and Mechanisms of Superconductivity (M2S-X)

    Science.gov (United States)

    Greene, L. H.; Zhu, J.-X.; Wang, H.; Meen, J.; Lorenz, B.; Dong, X. L.; dela Cruz, C. R.; Carlson, E.; Bud'ko, S. L.; Bauer, E.; Paglione, J.

    2013-07-01

    The 2012 Materials and Mechanisms of Superconductivity Conference (M2S 2012), which occurs every three years, brought together world experts and young scientists to discuss open questions in the fundamental physics and applications of superconductors, and to disseminate the latest theoretical and experimental research results in superconductors and related novel materials. This conference of 600 participants acted as a valuable training ground in this technologically important area. We focused on key unanswered questions in high-temperature cuprate superconductors, high-temperature iron-based superconductors, topological superconductors, organic superconductors, and heavy-electron superconductors. The discovery of new materials and novel technological applications for electronic devices and for energy transmission and storage was emphasized. There were special sessions on superconductivity and energy, and outreach sessions, and an evening public lecture. There were also junior researcher symposia interspersed within the conference, thus providing an ideal environment for advanced graduate students and postdoctoral researchers to explore the latest theoretical and experimental methods used to investigate challenging questions in the physics of materials as it relates to both fundamental science and technological applications. These proceedings are an archival testament to the excitement in the field and provide a valuable snapshot of the cutting-edge research of 2012. We hope this will be a valuable resource to active researchers in the field as well as an encouraging volume to excite new researchers to the ever-growing, multifaceted field of superconductivity. We thank Bernd Lorenz and his Publications Committee for their tremendously creative and diligent work in putting this volume together. This Conference would not have been possible without the tireless work of our Program Committee, Chaired by Rick Greene and Co-Chaired by Mike Norman. Becky McDuffee, our

  19. Daily home-based spirometry during withdrawal of inhaled corticosteroid in severe to very severe chronic obstructive pulmonary disease

    Directory of Open Access Journals (Sweden)

    Rodriguez-Roisin R

    2016-08-01

    Full Text Available Roberto Rodriguez-Roisin,1 Kay Tetzlaff,2,3 Henrik Watz,4 Emiel FM Wouters,5 Bernd Disse,2 Helen Finnigan,6 Helgo Magnussen,4 Peter MA Calverley7 1Respiratory Institute, Servei de Pneumologia, Hospital Clínic IDIBAPS-CIBERES, Universitat de Barcelona, Barcelona, Spain; 2Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim, Germany; 3Department of Sports Medicine, University of Tübingen, Tübingen, Germany; 4Pulmonary Research Institute at Lung Clinic Grosshansdorf, Airway Research Center North, German Center for Lung Research, Grosshansdorf, Germany; 5Department of Respiratory Medicine, University Hospital Maastricht, Maastricht University, Maastricht, the Netherlands; 6Department of Biostatistics and Data Sciences, Boehringer Ingelheim, Bracknell, UK; 7Institute of Ageing and Chronic Disease, Aintree University Hospital, Liverpool, UK Abstract: The WISDOM study (NCT00975195 reported a change in lung function following withdrawal of fluticasone propionate in patients with severe to very severe COPD treated with tiotropium and salmeterol. However, little is known about the validity of home-based spirometry measurements of lung function in COPD. Therefore, as part of this study, following suitable training, patients recorded daily home-based spirometry measurements in addition to undergoing periodic in-clinic spirometric testing throughout the study duration. We subsequently determined the validity of home-based spirometry for detecting changes in lung function by comparing in-clinic and home-based forced expiratory volume in 1 second in patients who underwent stepwise fluticasone propionate withdrawal over 12 weeks versus patients remaining on fluticasone propionate for 52 weeks. Bland–Altman analysis of these data confirmed good agreement between in-clinic and home-based measurements, both across all visits and at the individual visits at study weeks 6, 12, 18, and 52. There was a measurable difference between the forced expiratory volume

  20. Once-daily long-acting beta-agonists for chronic obstructive pulmonary disease: an indirect comparison of olodaterol and indacaterol

    Directory of Open Access Journals (Sweden)

    Roskell NS

    2014-07-01

    Full Text Available Neil S Roskell,1 Antonio Anzueto,2 Alan Hamilton,3 Bernd Disse,4 Karin Becker5 1Statistics, Bresmed Health Solutions Ltd, Sheffield, UK; 2School of Medicine, University of Texas Health Science Center, San Antonio, TX, USA; 3Medical Department, Boehringer Ingelheim (Canada Ltd, Burlington, ON, Canada; 4Medical Department, Boehringer Ingelheim GmbH, Ingelheim am Rhein, Germany; 5Global Health Economics and Outcomes Research, Boehringer Ingelheim GmbH, Ingelheim am Rhein, Germany Purpose: In the absence of head-to-head clinical trials comparing the once-daily, long-acting beta2-agonists olodaterol and indacaterol for the treatment of chronic obstructive pulmonary disease (COPD, an indirect treatment comparison by systematic review and synthesis of the available clinical evidence was conducted. Methods: A systematic literature review of randomized, controlled clinical trials in patients with COPD was performed to evaluate the efficacy and safety of olodaterol and indacaterol. Network meta-analysis and adjusted indirect comparison methods were employed to evaluate treatment efficacy, using outcomes based on trough forced expiratory volume in 1 second (FEV1, Transition Dyspnea Index, St George’s Respiratory Questionnaire total score and response, rescue medication use, and proportion of patients with exacerbations. Results: Eighteen trials were identified for meta-analysis (eight, olodaterol; ten, indacaterol. Olodaterol trials included patients of all severities, whilst indacaterol trials excluded patients with very severe COPD. Concomitant maintenance bronchodilator use was allowed in most olodaterol trials, but not in indacaterol trials. When similarly designed trials/data were analyzed for change from baseline in trough FEV1 (liters, the following mean differences (95% confidence interval were observed: trials excluding concomitant bronchodilator: indacaterol 75 mcg versus olodaterol 5 mcg, –0.005 (–0.077 to 0.067, and indacaterol 150 mcg

  1. Lutropin alpha, recombinant human luteinizing hormone, for the stimulation of follicular development in profoundly LH-deficient hypogonadotropic hypogonadal women: a review

    Directory of Open Access Journals (Sweden)

    Bernd Th Krause

    2009-06-01

    Full Text Available Bernd Th Krause1, Ralf Ohlinger2, Annette Haase31Center for Endocrinology and Reproductive Medicine, MVZ Uhlandstr, Berlin, Germany; 2Ernst-Moritz-Arndt-University, Department of Gynecology and Obstetrics, Greifswald, Germany; 3Uhlandstr. 162, 10719 BerlinAbstract: Hypogonadotropic hypogonadism is defined as a medical condition with low or undetectable gonadotropin secretion, associated with a complete arrest of follicular growth and very low estradiol. The main cause can be traced back to an irregular or absent hypothalamic GnRH secretion, whereas only a minority suffers from a pituitary disorder. The choice of treatment to reverse this situation is a pulsatile GnRH application or a direct ovarian stimulation using gonadotropin injections. The goal is to achieve a proper ovarian function in these cases for a short time to allow ovulation and chance of pregnancy. Since the pulsatile GnRH treatment lost its former importance, several gonadotropins are in use to stimulate follicular growth, such as urine-derived human menopausal gonadotropin, highly purified follicle stimulating hormone (FSH or recombinant FSH, all with different success. The introduction of recombinant luteinizing hormone (LH and FSH provided an opportunity to investigate the distinct influences of LH and FSH alone and in combination on follicular growth in monofollicular ovulation induction cycles, and additionally on oocyte maturation, fertilization competence of the oocyte and embryo quality in downregulated IVF patients. Whereas FSH was known to be indispensable for normal follicular growth, the role of LH remained questionable. Downregulated IVF patients with this short-term gonadotropin depletion displayed no advance in stimulation success with the use of recombinant LH. Patients with hypogonadotropic hypogonadism undergoing monofollicular stimulation for ovulation induction showed clearly a specific role and need for both hormones in normal follicular growth. Therefore, a

  2. German-austrian recommendations for HIV1-therapy in pregnancy and in HIV1-exposed newborn - update 2008

    Directory of Open Access Journals (Sweden)

    Buchholz Bernd

    2009-11-01

    Full Text Available Abstract German-Austrian recommendations for HIV1-therapy in pregnancy - Update 2008 Bernd Buchholz (University Medical Centre Mannheim, Pediatric Clinic, Matthias Beichert (Mannheim, Gynecology and Obstetrics Practice, Ulrich Marcus (Robert Koch Institute, Berlin, Thomas Grubert, Andrea Gingelmaier (Gynecology Clinic of the Ludwig Maximilians University of Munich, Dr. med. Annette Haberl (HIV-Department, J. W. Goethe-University Hospital, Frankfurt, Dr. med. Brigitte Schmied (Otto-Wagner Spital, Wien. In Germany during the last years about 200-250 HIV1-infected pregnant women delivered a baby each year, a number that is currently increasing. To determine the HIV-status early in pregnancy voluntary HIV-testing of all pregnant women is recommended in Germany and Austria as part of prenatal care. In those cases, where HIV1-infection was known during pregnancy, since 1995 the rate of vertical transmission of HIV1 was reduced to 1-2%. This low transmission rate has been achieved by the combination of anti-retroviral therapy of pregnant women, caesarean section scheduled before onset of labour, anti-retroviral post exposition prophylaxis in the newborn and refraining from breast-feeding by the HIV1-infected mother. To keep pace with new results in research, approval of new anti-retroviral drugs and changes in the general treatment recommendations for HIV1-infected adults, in 1998, 2001, 2003 and 2005 an interdisciplinary consensus meeting was held. Gynaecologists, infectious disease specialists, paediatricians, pharmacologists, virologists and members of the German AIDS Hilfe (NGO were participating in this conference to update the prevention strategies. A fifth update became necessary in 2008. The updating process was started in January 2008 and was terminated in September 2008. The guidelines provide new recommendations on the indication and the starting point for HIV-therapy in pregnancies without complications, drugs and drug combinations to be

  3. Assessing the costs and benefits of perioperative iron deficiency anemia management with ferric carboxymaltose in Germany

    Directory of Open Access Journals (Sweden)

    Froessler B

    2018-04-01

    Full Text Available Bernd Froessler,1,2 Alexandra M Rueger,3,4 Mark P Connolly5,6 1Department of Anesthesia, Lyell McEwin Hospital, Elizabeth Vale, SA, Australia; 2Discipline of Acute Care Medicine, University of Adelaide, Adelaide, SA, Australia; 3Vifor Pharma, Munich, Germany; 4Charité Universitätsmedizin Berlin, Medizinische Klinik mit Schwerpunkt Kardiologie Campus Virchow-Klinikum, Berlin, Germany; 5Unit of PharmacoEpidemiology and PharmacoEconomics, Department of Pharmacy, University of Groningen, Groningen, the Netherlands; 6Global Market Access Solutions Sàrl, St-Prex, Switzerland Background: Perioperative administration of ferric carboxymaltose (FCM was previously shown to reduce both the need for transfusions and the hospital length of stay in patients with preoperative iron deficiency anemia (IDA. In this study, we estimated the economic consequences of perioperative administration using FCM vs usual care in patients with IDA from the perspective of a German hospital using decision-analytic modeling.Materials and methods: The model was populated with clinical inputs (transfusion rates, blood units transfused, hospital length of stay from a previously reported randomized trial comparing FCM vs usual care for managing IDA patients undergoing elective abdominal surgery. We applied a hospital perspective to all costs, excluding surgery-related costs in both treatment arms. One-way sensitivity analyses were undertaken to evaluate key drivers of cost analysis.Results: The average costs per case treated using FCM compared to usual care were €2,461 and €3,246, respectively, for resource expenses paid by hospital per case. This would suggest potential savings achieved with preoperative intravenous iron treatment per patient of €786 per case. A sensitivity analysis varying the key input parameters indicated the cost analysis is most sensitive to changes in the length of stay and the cost of hospitalization per day.Conclusion: Perioperative administration

  4. HbA1c for diagnosis of type 2 diabetes. Is there an optimal cut point to assess high risk of diabetes complications, and how well does the 6.5% cutoff perform?

    Directory of Open Access Journals (Sweden)

    Kowall B

    2013-11-01

    Full Text Available Bernd Kowall, Wolfgang Rathmann Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany Abstract: Glycated hemoglobin (HbA1c has recently been recommended for the diagnosis of type 2 diabetes mellitus (T2DM by leading diabetes organizations and by the World Health Organization. The most important reason to define T2DM is to identify subjects with high risk of diabetes complications who may benefit from treatment. This review addresses two questions: 1 to assess from existing studies whether there is an optimal HbA1c threshold to predict diabetes complications and 2 to assess how well the recommended 6.5% cutoff of HbA1c predicts diabetes complications. HbA1c cutoffs derived from predominantly cross-sectional studies on retinopathy differ widely from 5.2%–7.8%, and among other reasons, this is due to the heterogeneity of statistical methods and differences in the definition of retinopathy. From the few studies on other microvascular complications, HbA1c thresholds could not be identified. HbA1c cutoffs make less sense for the prediction of cardiovascular events (CVEs because CVE risks depend on various strong risk factors (eg, hypertension, smoking; subjects with low HbA1c levels but high values of CVE risk factors were shown to be at higher CVE risk than subjects with high HbA1c levels and low values of CVE risk factors. However, the recommended 6.5% threshold distinguishes well between subjects with and subjects without retinopathy, and this distinction is particularly strong in severe retinopathy. Thus, in existing studies, the prevalence of any retinopathy was 2.5 to 4.5 times as high in persons with HbA1c-defined T2DM as in subjects with HbA1c <6.5%. To conclude, from existing studies, a consistent optimal HbA1c threshold for diabetes complications cannot be derived, and the recommended 6.5% threshold has mainly been brought about

  5. Feasibility and safety of rehabilitation after venous thromboembolism

    Directory of Open Access Journals (Sweden)

    Noack F

    2015-07-01

    Full Text Available Frank Noack,1,2 Bernd Schmidt,1 Mroawan Amoury,2 Dietrich Stoevesandt,3 Stephan Gielen,4 Birgit Pflaumbaum,5 Christiane Girschick,5 Heinz Völler,6 Axel Schlitt5,7 1Department of Medicine I, 2Department of Emergency Medicine, 3Department of Diagnostic Radiology, 4Department of Medicine III, University Clinic Halle (Saale, Halle, Germany; 5Department of Cardiology and Pulmology, Paracelsus-Harz-Clinic Bad Suderode, Quedlinburg, Germany; 6Klinik am See, Rüdersdorf, Germany; 7Medical Faculty, Martin Luther University Halle, Wittenberg, Germany Background: Venous thromboembolism is a life-threatening disease. In survivors, different degrees of functional complaints need to be restored or prevented (eg, post-thrombotic syndrome, pulmonary hypertension. Therefore, rehabilitation after venous thromboembolism is recommended in Germany. However, a structured rehabilitation program has not been defined for this indication. Here, we present the experience of a single rehabilitation center. Methods: Data from consecutive pulmonary embolism (PE patients who were referred for a 3-week inpatient rehabilitation program from 2006 to 2014 were retrospectively evaluated. Results: In all, 422 patients were identified. The mean age was 63.9±13.5 years, the mean body mass index (BMI was 30.6±6.2 kg/m2, and 51.9% were female. Deep vein thrombosis according to PE was known for 55.5% of all patients. We applied a wide range of therapeutic interventions such as bicycle training with monitored heart rate in 86.7%, respiratory training in 82.5%, aquatic therapy/swimming in 40.1%, and medical training therapy in 14.9% of all patients. Adverse events (AEs occurred in 57 patients during the 3-week rehabilitation period. The most common AEs were cold (n=6, diarrhea (n=5, and infection of the upper or lower respiratory tract that was treated with antibiotics (n=5. However, three patients under anticoagulation therapy suffered from bleeding, which was clinically relevant in

  6. Vigilância e cultura algorítmica no novo regime global de mediação da informação

    Directory of Open Access Journals (Sweden)

    Arthur Coelho Bezerra

    Full Text Available RESUMO Propõe-se o termo “novo regime global de mediação da informação” para abordar as mudanças nas práticas de mediação da informação que ocorrem nas redes digitais. Para tanto, vale-se do contraste entre as formas de mediação da informação estabelecidas no século XX (e vigentes até o início do século XXI e as novas formas de produção, circulação, mediação e acesso a informação. O principal ponto a ser destacado é a mudança de um perfil de mediação centrado na figura de editores e produtores para uma mediação a princípio lida como “tecnológica” - posto que encarnada por fórmulas matemáticas de algoritmos - mas que é concebida por engenheiros de grandes empresas como Google e Facebook, alimentada pelas informações dos próprios usuários das plataformas e utilizada tanto por empresas para finalidades econômicas quanto por governos em suas agendas políticas. Conclui-se que as mudanças na estrutura sociotécnica do “regime de informação” vigente (conforme autores como Bernd Frohmann e González de Gómez, embora permitam avanços nas mais diversas áreas (educação, saúde, segurança pública, consumo, mobilidade urbana e outros, podem trazer efeitos deletérios para a cultura e para a criatividade humana, principalmente no que se refere à privacidade e ao acesso a um conjunto diversificado de artefatos culturais, científicos e informativos.

  7. Fuel cells science and engineering. Materials, processes, systems and technology. Vol. 1

    Energy Technology Data Exchange (ETDEWEB)

    Stolten, Detlef; Emonts, Bernd (eds.) [Forschungszentrum Juelich GmbH (DE). Inst. fuer Energieforschung (IEF), Brennstoffzellen (IEF-3)

    2012-07-01

    The first volume is divided in four parts and 22 chapters. It is structured as follows: PART I: Technology. Chapter 1: Technical Advancement of Fuel-Cell Research and Development (Dr. Bernd Emonts, Ludger Blum, Thomas Grube, Werner Lehnert, Juergen Mergel, Martin Mueller and Ralf Peters); 2: Single-Chamber Fuel Cells (Teko W. Napporn and Melanie Kuhn); 3: Technology and Applications of Molten Carbonate Fuel Cells (Barbara Bosio, Elisabetta Arato and Paolo Greppi); 4: Alkaline Fuel Cells (Erich Guelzow); 5: Micro Fuel Cells (Ulf Groos and Dietmar Gerteisen); 6: Principles and Technology of Microbial Fuel Cells (Jan B. A. Arends, Joachim Desloover, Sebastia Puig and Willy Verstraete); 7: Micro-Reactors for Fuel Processing (Gunther Kolb); 8: Regenerative Fuel Cells (Martin Mueller). PART II: Materials and Production Processes. Chapter 9: Advances in Solid Oxide Fuel Cell Development between 1995 and 2010 at Forschungszentrum Juelich GmbH, Germany (Vincent Haanappel); 10: Solid Oxide Fuel Cell Electrode Fabrication by Infiltration (Evren Gunen); 11: Sealing Technology for Solid Oxide Fuel Cells (K. Scott Weil); 12: Phosphoric Acid, an Electrolyte for Fuel Cells - Temperature and Composition Dependence of Vapor Pressure and Proton Conductivity (Carsten Korte); 13: Materials and Coatings for Metallic Bipolar Plates in Polymer Electrolyte Membrane Fuel Cells (Heli Wang and John A. Turner); 14: Nanostructured Materials for Fuel Cells (John F. Elter); 15: Catalysis in Low-Temperature Fuel Cells - An Overview (Sabine Schimpf and Michael Bron). PART III: Analytics and Diagnostics. Chapter 16: Impedance Spectroscopy for High-Temperature Fuel Cells (Ellen Ivers-Tiffee, Andre Leonide, Helge Schichlein, Volker Sonn and Andre Weber); 17: Post-Test Characterization of Solid Oxide Fuel-Cell Stacks (Norbert H. Menzler and Peter Batfalsky); 18: In Situ Imaging at Large-Scale Facilities (Christian Toetzke, Ingo Manke and Werner Lehnert); 19: Analytics of Physical Properties of Low

  8. Patient preferences in the treatment of hemophilia A: impact of storage conditions on product choice

    Directory of Open Access Journals (Sweden)

    Tischer B

    2018-03-01

    Full Text Available Bernd Tischer,1 Renato Marino,2 Mariasanta Napolitano3 1Kantar Health, Munich, Germany; 2Haemophilia and Thrombosis Centre, University Hospital of Bari, Apulia, Italy; 3University of Palermo, Reference Regional Center for Thrombosis and Hemostasis Hematology Unit, Palermo, Italy Objectives: To gain insights into the usage of factor VIII (FVIII products by patients diagnosed with moderate/severe hemophilia A, and to assess the impact and perceived importance of product storage.Methods: In this study, 200 patients diagnosed with moderate or severe hemophilia A across seven countries participated. Data were collected via a 30-minute, face-to-face interview in six countries and via a web-based survey in the seventh country. The questionnaire evaluated the effect of six features associated with FVIII products on the choice of the product; the structure and flow of data collection was designed to eliminate potential bias.Results: Two-thirds of the respondents were using recombinant FVIII products. Only 17% were generally dissatisfied with current FVIII products, whereas >40% of the respondents were dissatisfied with frequency of administration and storage issues when traveling. The majority noted restrictions in their daily activities, particularly travel and sports. Most of them (85%, stored their product in the refrigerator and of these, 88% believed that it should always be stored there. These patients were also less satisfied with the product overall, more concerned about storage temperature, more restricted in daily activities, and spent more time on preparation and injection compared with patients who stored their product at room temperature. Conjoint analysis revealed that origin of FVIII (plasma-derived vs recombinant was the strongest driver of product choice among all respondents, followed by storage flexibility (temperature, reconstitution device, and administration frequency. In this study, we did not investigate the efficacy and safety of

  9. Development of Respimat® Soft Mist™ Inhaler and its clinical utility in respiratory disorders

    Directory of Open Access Journals (Sweden)

    Dalby RN

    2011-09-01

    Full Text Available Richard N Dalby1, Joachim Eicher2, Bernd Zierenberg21Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD, USA; 2Boehringer Ingelheim, Ingelheim, GermanyAbstract: The Respimat® Soft Mist™ Inhaler (SMI (Boehringer Ingelheim International GmbH, Ingelheim, Germany was developed in response to the need for a pocket-sized device that can generate a single-breath, inhalable aerosol from a drug solution using a patient-independent, reproducible, and environmentally friendly energy supply. This paper describes the design and evolution of this innovative device from a laboratory concept model and the challenges that were overcome during its development and scaleup to mass production. A key technical breakthrough was the uniblock, a component combining filters and nozzles and made of silicon and glass, through which drug solution is forced using mechanical power. This allows two converging jets of solution to collide at a controlled angle, generating a fine aerosol of inhalable droplets. The mechanical energy comes from a spring which is tensioned by twisting the base of the device before use. Additional features of the Respimat® SMI include a dose indicator and a lockout mechanism to avoid the problems of tailing-off of dose size seen with pressurized metered dose inhalers. The Respimat® SMI aerosol cloud has a unique range of technical properties. The high fine particle fraction allied with the low velocity and long generation time of the aerosol translate into a higher fraction of the emitted dose being deposited in the lungs compared with aerosols from pressurized metered dose inhalers and dry powder inhalers. These advantages are realized in clinical trials in adults and children with obstructive lung diseases, which have shown that the efficacy and safety of a pressurized metered dose inhaler formulation of a combination bronchodilator can be matched by a Respimat® SMI formulation containing only one half or one quarter

  10. Preservative-free bimatoprost 0.03% in patients with primary open-angle glaucoma or ocular hypertension in clinical practice

    Directory of Open Access Journals (Sweden)

    Pillunat LE

    2016-09-01

    Full Text Available Lutz E Pillunat,1 Peter Eschstruth,2 Stefan Häsemeyer,3 Ulrich Thelen,4 Christian Foja,5 Richard Leaback,6 Stefan Pfennigsdorf7 1Department of Ophthalmology, University Hospital Carl Gustav Carus, Dresden, 2Ophthalmology Practice, Kiel, 3Eye Center Kraichgau, Wiesloch, 4Department of Ophthalmology, University of Münster, Münster, 5Ophthalmology Practice, Leipzig, Germany; 6Allergan Holdings Ltd., Marlow, UK; 7Ophthalmology Practice, Polch, Germany Background: Intraocular pressure (IOP-lowering medications for primary open-angle glaucoma and ocular hypertension commonly contain preservatives that can cause ocular surface damage in many patients. The purpose of this study was to evaluate the efficacy and tolerability of, and compliance to, preservative-free (PF bimatoprost 0.03% in patients with primary open-angle glaucoma or ocular hypertension (IOP ≥18 mmHg in a clinical practice setting. Methods: This open-label study observed patients who were switched to PF bimatoprost 0.03% for medical reasons. IOP was measured at baseline and ~12 weeks later at the final visit, and the change in IOP was calculated. Tolerability and continuation of therapy were assessed at two follow-up visits. Results: A total of 1,830 patients were included in the study, and complete IOP data were available for 1,543 patients. Mean IOP was reduced by 23% from 21.64 mmHg to 16.59 mmHg (P<0.0001. In subgroup analyses, the mean IOP was significantly reduced compared with baseline, regardless of prior therapy, including those previously treated with PF monotherapy. A total of 85.7% of physicians reported the IOP-lowering efficacy of PF bimatoprost 0.03% to be as expected or better than expected. Adverse events (AEs were experienced by 5.7% of patients, and there were no serious AEs reported. The most common AEs were eye irritation (1.7% and hyperemia (1.4%. Physician-reported treatment compliance was reported as better than (48.7% or equal to (43.6% prior treatment in

  11. A Generic Model for Prediction of Separation Performance of Olefin/Paraffin Mixture by Glassy Polymer Membranes

    Directory of Open Access Journals (Sweden)

    A.A. Ghoreyshi

    2008-02-01

    Full Text Available The separation of olefin/paraffin mixtures is an important process in petrochemical industries, which is traditionally performed by low temperature distillation with a high-energy consumption, or complex extractive distillationand adsorption techniques. Membrane separation process is emerging as an alternative for traditional separation processes with respect to low energy and simple operation. Investigations made by various researchers on polymeric membranes it is found that special glassy polymers render them as suitable materials for olefin/paraffin mixture separation. In this regard, having some knowledge on the possible transport mechanism of these processes would play a significant role in their design and applications. In this study, separation behavior of olefin/paraffin mixtures through glassy polymers was modeled by three different approaches: the so-called dual transport model, the basic adsorption-diffusion theory and the general Maxwell-Stefan formulation. The systems chosen to validate the developed transport models are separation of ethane-ethylene mixture by 6FDA-6FpDA polyimide membrane and propane-propylene mixture by 6FDA-TrMPD polyimide membrane for which the individual sorption and permeation data are available in the literature. Acritical examination of dual transport model shows that this model fails clearly to predict even the proper trend for selectivities. The adjustment of pemeabilities by accounting for the contribution of non-selective bulk flow in the transport model introduced no improvement in the predictability of the model. The modeling results based on the basic adsorption-diffusion theory revealed that in this approach only using mixed permeability data, an acceptable result is attainable which fades out the advantages of predictibility of multicomponent separation performance from pure component data. Finally, the results obtained from the model developed based on Maxwell-Stefan formulation approach show a

  12. Inception of supraglacial channelization under turbulent flow conditions

    Science.gov (United States)

    Mantelli, E.; Camporeale, C.; Ridolfi, L.

    2013-12-01

    Glacier surfaces exhibit an amazing variety of meltwater-induced morphologies, ranging from small scale ripples and dunes on the bed of supraglacial channels to meandering patterns, till to large scale drainage networks. Even though the structure and geometry of these morphologies play a key role in the glacier melting processes, the physical-based modeling of such spatial patterns have attracted less attention than englacial and subglacial channels. In order to partially fill this gap, our work concerns the large scale channelization occurring on the ice slopes and focuses on the role of turbulence on the wavelength selection processes during the channelization inception. In a recent study[1], two of us showed that the morphological instability induced by a laminar film flowing over an ice bed is characterized by transversal length scales of order of centimeters. Being these scales much smaller than the spacing observed in the channelization of supraglacial drainage networks (that are of order of meters) and considering that the water films flowing on glaciers can exhibit Reynolds numbers larger than 104, we investigated the role of turbulence in the inception of channelization. The flow-field is modeled by means of two-dimensional shallow water equations, where Reynolds stresses are also considered. In the depth-averaged heat balance equation an incoming heat flux from air is assumed and forced convection heat exchange with the wall is taken into account, in addition to convection and diffusion in the liquid. The temperature profile in the ice is finally coupled to the liquid through Stefan equation. We then perform a linear stability analysis and, under the assumption of small Stefan number, we solve the differential eigenvalue problem analytically. As main outcome of such an analysis, the morphological instability of the ice-water interface is detected and investigated in a wide range of the independent parameters: longitudinal and transversal wavenumbers

  13. Modelling of landfill gas adsorption with bottom ash for utilization of renewable energy

    Energy Technology Data Exchange (ETDEWEB)

    Miao, Chen

    2011-10-06

    . In this thesis, both of them are discussed respectively. Additionally, the diffusion phenomena of landfill gas mixtures can be expressed by Maxwell-Stefan equations and Fick's law. According to the relation between Maxwell-Stefan equations and Fick's law, the diffusion coefficients of landfill gas mixtures can be estimated in theory. The major part of this model is based on the theory of mass transfer through porous media. In which, mass balance, momentum balance and constitutive relations among multi-phase are employed for modeling. Landfill gas adsorption processes in two-dimension porous media can be thus simulated with application of this model. (orig.)

  14. Travel report on a preparatory mission to the Agencija RAO, Ljubljana for a radium conditioning operation

    International Nuclear Information System (INIS)

    Neubauer, J.

    2001-07-01

    The purpose of the trip was to establish the current status of radioactive waste management in Slovenia, to discuss their plans for the future management of their radioactive wastes and to prepare for a radium source conditioning operation to make safe and secure their known inventory of radium withdrawn from service. The IAEA are considering placing a contract on the Oesterreichisches Forschungszentrum Seibersdorf (OeFZS) to carry out the radium conditioning operation on the agency's behalf in a manner used successfully on a number of previous occasions. In Slovenia responsibility for the management of radioactive wastes arising from nuclear applications in medicine research and industry is delegated to 'Agencija Rao'. First a visit was made to the storage building in which such wastes are stored, the building being within the grounds of the Josef Stefan Institute in Ljubljana. The possibility of carrying out the radium conditioning operation in the building and the improvements and modifications necessary was discussed. The inventory of stored waste was reviewed, the packages containing radium were identified and located in the store. Some of these contained radium-beryllium sources. It was agreed that such sources would not be conditioned during the forthcoming operation. Next a visit was made to the chemistry laboratories of the Josef Stefan Institute, these being a possible alternative location for the operation. On returning to the 'Agencija Rao' office in Ljubljana detail discussion of the merits of the alternative locations were discussed. It was realized that the operation could proceed quicker and at less cost if the existing laboratory was chosen, the unknown factor is the time taken to obtain regulatory approval. Next detailed discussion took place of the availability of necessary equipment and consumable items and agreement reached on what should be supplied locally and what should be brought to Slovenia, by the conditioning team. Plans were made to

  15. Self-Organized Biological Dynamics and Nonlinear Control

    Science.gov (United States)

    Walleczek, Jan

    2006-04-01

    The frontiers and challenges of biodynamics research Jan Walleczek; Part I. Nonlinear Dynamics in Biology and Response to Stimuli: 1. External signals and internal oscillation dynamics - principal aspects and response of stimulated rhythmic processes Friedemann Kaiser; 2. Nonlinear dynamics in biochemical and biophysical systems: from enzyme kinetics to epilepsy Raima Larter, Robert Worth and Brent Speelman; 3. Fractal mechanisms in neural control: human heartbeat and gait dynamics in health and disease Chung-Kang Peng, Jeffrey M. Hausdorff and Ary L. Goldberger; 4. Self-organising dynamics in human coordination and perception Mingzhou Ding, Yanqing Chen, J. A. Scott Kelso and Betty Tuller; 5. Signal processing in biochemical reaction networks Adam P. Arkin; Part II. Nonlinear Sensitivity of Biological Systems to Electromagnetic Stimuli: 6. Electrical signal detection and noise in systems with long-range coherence Paul C. Gailey; 7. Oscillatory signals in migrating neutrophils: effects of time-varying chemical and electrical fields Howard R. Petty; 8. Enzyme kinetics and nonlinear biochemical amplification in response to static and oscillating magnetic fields Jan Walleczek and Clemens F. Eichwald; 9. Magnetic field sensitivity in the hippocampus Stefan Engström, Suzanne Bawin and W. Ross Adey; Part III. Stochastic Noise-Induced Dynamics and Transport in Biological Systems: 10. Stochastic resonance: looking forward Frank Moss; 11. Stochastic resonance and small-amplitude signal transduction in voltage-gated ion channels Sergey M. Bezrukov and Igor Vodyanoy; 12. Ratchets, rectifiers and demons: the constructive role of noise in free energy and signal transduction R. Dean Astumian; 13. Cellular transduction of periodic and stochastic energy signals by electroconformational coupling Tian Y. Tsong; Part IV. Nonlinear Control of Biological and Other Excitable Systems: 14. Controlling chaos in dynamical systems Kenneth Showalter; 15. Electromagnetic fields and biological

  16. Development of a lauric acid/albumin hybrid iron oxide nanoparticle system with improved biocompatibility

    Directory of Open Access Journals (Sweden)

    Zaloga J

    2014-10-01

    Full Text Available Jan Zaloga,1 Christina Janko,1 Johannes Nowak,2 Jasmin Matuszak,1 Sabine Knaup,1 Dietmar Eberbeck,3 Rainer Tietze,1 Harald Unterweger,1 Ralf P Friedrich,1 Stephan Duerr,1 Ralph Heimke-Brinck,4 Eva Baum,4 Iwona Cicha,1 Frank Dörje,4 Stefan Odenbach,2 Stefan Lyer,1 Geoffrey Lee,5 Christoph Alexiou1 1Department of Otorhinolaryngology, Head and Neck Surgery, Section for Experimental Oncology and Nanomedicine (SEON, Else Kröner-Fresenius-Stiftung-Professorship, University Hospital Erlangen, Erlangen, Germany; 2Measuring and Automation Technology, Technical University Dresden, Dresden, Germany; 3Physikalisch-Technische-Bundesanstalt, Berlin, Germany; 4Pharmacy Department, University Hospital Erlangen, Erlangen, Germany; 5Division of Pharmaceutics, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany Abstract: The promising potential of superparamagnetic iron oxide nanoparticles (SPIONs in various nanomedical applications has been frequently reported. However, although many different synthesis methods, coatings, and functionalization techniques have been described, not many core-shell SPION drug delivery systems are available for clinicians at the moment. Here, bovine serum albumin was adsorbed onto lauric acid-stabilized SPIONs. The agglomeration behavior, zeta potential, and their dependence on the synthesis conditions were characterized with dynamic light scattering. The existence and composition of the core-shell-matrix structure was investigated by transmission electron microscopy, Fourier transform infrared spectroscopy, and zeta potential measurements. We showed that the iron oxide cores form agglomerates in the range of 80 nm. Moreover, despite their remarkably low tendency to aggregate even in a complex media like whole blood, the SPIONs still maintained their magnetic properties and were well attractable with a magnet. The magnetic properties were quantified by vibrating sample magnetometry and a superconducting quantum

  17. Calculation of the emergency condenser of the indirect cycle reactor CAREM

    International Nuclear Information System (INIS)

    Walter, D.; Schaffrath, A.

    2002-08-01

    , Fritz, Gormenflo, Stefan and Abdelsalam) shows a strong underestimation of heat transfer coefficients in low pressure conditions. Therefore the model of Forster and Zuber replaced against the model of Stefan and Abdelsalam. The calculations with ATHELT/KONWAR were repeated and show now a better agreement (deviations less equal than 3%) with the RELAP results. (orig.) [de

  18. Controlling Particle Morphologies at Fluid Interfaces: Macro- and Micro- approaches

    Science.gov (United States)

    Beesabathuni, Shilpa Naidu

    shapes such as ellipsoids, mushrooms, spherulites and discs. The final morphology of the wax particles is governed by the interfacial, inertial, viscous and thermal effects, which can be studied over a range of Weber, Capillary, Reynolds and Stefan numbers. A simplified Stefan problem for a spherical drop was solved. The time required to initiate a phase transition at the interface of the molten wax and water after impact was estimated and correlated with the drop deformation history and final wax particle shape to develop a capability to predict the shape. While the microfluidic synthesis approach offers precise control over morphology and functionality, large particle throughput is a limitation. The drop impact in a liquid medium emulsion approach is limited to crosslinking or heat sensitive materials but can be extended to large scale production for industrial applications. Both approaches are simple, robust and cost effective making them viable and attractive solutions for complex particle synthesis. The choice of the approach is dependent on considerations such as particle material, size, shape, throughput and end application.

  19. Contributions to the 14. Geoengineering congress in Munich. Geoengineering with the parameters time and quality; Beitraege zum 14. Geotechnik-Tag in Muenchen. Geotechnik mit den Parametern Zeit und Qualitaet

    Energy Technology Data Exchange (ETDEWEB)

    Vogt, Norbert (ed.)

    2016-05-01

    This proceedings contains the following twelve papers: Why time and quality play a role? (Gebhard Dausch); Models for settlement prediction of structures in opencast dumps (Emanuel Birle, Stefan Vogt); Quality improvement and risk reduction through alternative proposals? Example: Intake structure of a coal-fired plant Wilhelmshaven (Thomas Brand, Friderike Hamm); History and methodology of the development of the combined pile and raft foundation (Rolf Katzenbach); Hazardous waste dump at Malsch - long-term monitoring of the safety measures (Walter Laechler, Fred Dietzel); Murphy's Law on the example of Protzenweiher Bridge (Markus Herten, Andreas Beier); ''Permanent anchor'' - state of the art and long-term experience with the durability of ground anchors (Karsten Beck House, Henning Lesemann); Optimized quality management of the implementation of DSM-works (W. Sondermann, W. Wehr); Subway construction in Doha on the example of the Green Line (Guenther Heilmayer); Marmaray Project - Bosphorus Crossing tunnels and stations - Geotechnical Aspects (Nurettin Demir); Crossrail C310 Thames Tunnel, geotechnical and tunnel construction challenges in urban tunnelling with variable ground conditions (Andreas Raedle, Stephan Assenmacher, Esters Sophia Karl); Proof concept of establishing the underground central station Stuttgart 21 - Numerical modeling and calibration (Roberto Cudmani). [German] Dieser Tagungsband enthaelt folgende zwoelf Beitraege: Warum Zeit und Qualitaet eine Rolle spielen (Gebhard Dausch); Modelle zur Setzungsprognose von Bauwerken auf Tagebaukippen (Emanuel Birle, Stefan Vogt); Qualitaetsverbesserung und Risikominimierung durch Sondervorschlaege? Beispiel: Entnahmebauwerk Kohlekraftwerk Wilhelmshaven (Thomas Brand, Friderike Hamm); Historie und Methodik der Entwicklung der Kombinierten Pfahl-Plattengruendung (KPP) (Rolf Katzenbach); Langzeitkontrolle der Sicherungsmassnahmen der Sonderabfalldeponie Malsch (Walter Laechler, Fred

  20. Flow cytometry for intracellular SPION quantification: specificity and sensitivity in comparison with spectroscopic methods

    Directory of Open Access Journals (Sweden)

    Friedrich RP

    2015-06-01

    Full Text Available Ralf P Friedrich,1 Christina Janko,1 Marina Poettler,1 Philipp Tripal,1 Jan Zaloga,1 Iwona Cicha,1 Stephan Dürr,1,2 Johannes Nowak,3 Stefan Odenbach,3 Ioana Slabu,4 Maik Liebl,4 Lutz Trahms,4 Marcus Stapf,5 Ingrid Hilger,5 Stefan Lyer,1 Christoph Alexiou1 1Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine, University hospital Erlangen, 2Department of Otorhinolaryngology, Head and Neck Surgery, Section of Phoniatrics and Pediatric Audiology, University hospital Erlangen, Erlangen, 3Technische Universität Dresden, Chair of Magnetofluiddynamics, Measuring and Automation Technology, Dresden, 4Physikalisch-Technische Bundesanstalt Berlin, Berlin, 5Department of Radiology, Division of Diagnostic and Interventional Radiology, Experimental Radiology, University hospital Jena, Jena, Germany Abstract: Due to their special physicochemical properties, iron nanoparticles offer new promising possibilities for biomedical applications. For bench to bedside translation of superparamagnetic iron oxide nanoparticles (SPIONs, safety issues have to be comprehensively clarified. To understand concentration-dependent nanoparticle-mediated toxicity, the exact quantification of intracellular SPIONs by reliable methods is of great importance. In the present study, we compared three different SPION quantification methods (ultraviolet spectrophotometry, magnetic particle spectroscopy, atomic adsorption spectroscopy and discussed the shortcomings and advantages of each method. Moreover, we used those results to evaluate the possibility to use flow cytometric technique to determine the cellular SPION content. For this purpose, we correlated the side scatter data received from flow cytometry with the actual cellular SPION amount. We showed that flow cytometry provides a rapid and reliable method to assess the cellular SPION content. Our data also demonstrate that internalization of iron oxide nanoparticles in human