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Sample records for im ti-47al-2cr-2nb alloys

  1. Development of an oxidation resistant glass-ceramic composite coating on Ti-47Al-2Cr-2Nb alloy

    Science.gov (United States)

    Li, Wenbo; Zhu, Shenglong; Chen, Minghui; Wang, Cheng; Wang, Fuhui

    2014-02-01

    Three glass-ceramic composite coatings were prepared on Ti-47Al-2Cr-2Nb alloy by air spraying technique and subsequent firing. The aim of this work is to study the reactions between glass matrix and inclusions and their effects on the oxidation resistance of the glass-ceramic composite coating. The powders of alumina, quartz, or both were added into the aqueous solution of potassium silicate (ASPS) to form slurries used as the starting materials for the composite coatings. The coating formed from an ASPS-alumina slurry was porous, because the reaction between alumina and potassium silicate glass resulted in the formation of leucite (KAlSi2O6), consuming substantive glass phase and hindering the densification of the composite coating. Cracks were observed in the coating prepared from an ASPS-quartz slurry due to the larger volume shrinkage of the coating than that of the alloy. In contrast, an intact and dense SiO2-Al2O3-glass coating was successfully prepared from an ASPS-alumina-silica slurry. The oxidation behavior of the SiO2-Al2O3-glass composite coating on Ti-47Al-2Cr-2Nb alloy was studied at 900 °C. The SiO2-Al2O3-glass composite coating acted as an oxygen diffusion barrier, and prevented the inward diffusion of the oxygen from the air to the coating/alloy interface, therefore, decreasing the oxidation rate of the Ti-47Al-2Cr-2Nb alloy significantly.

  2. Microstructure and mechanical properties of cast Ti-47Al-2Cr-2Nb alloy melted in various crucibles

    Directory of Open Access Journals (Sweden)

    Wang Ligang

    2012-02-01

    Full Text Available The main factors limiting the mass production of TiAl-based components are the high reactivity of TiAl-based alloys with the crucible or mould at high temperature. In this work, various crucibles (e.g. CaO, Y2O3 ceramic crucibles and water-cooled copper crucible were used to fabricate the Ti-47Al-2Cr-2Nb alloy in a vacuum induction furnace. The effects of crucible materials and melting parameters on the microstructure and mechanical properties of the alloy were analyzed by means of microstructure observation, chemical analysis, tensile test and fracture surface observation. The possibilities of melting TiAl alloys in crucibles made of CaO and Y2O3 refractory materials were also discussed.

  3. The dependence of tensile ductility on investment casting parameters in gamma titanium aluminides

    International Nuclear Information System (INIS)

    Raban, R.; Rishel, L.L.; Pollock, T.M.

    1999-01-01

    Plates of three gamma titanium aluminide alloys have been investment cast with a wide variety of casting conditions designed to influence cooling rates. These alloys include Ti-48Al-2Cr-2Nv, Ti-47Al-2Cr-2Nb+0.5at%B and Ti-45Al-2Cr-2Nb+0.9at%B. Cooling rates have been estimated with the use of thermal data from casting experiments, along with the UES ProCAST simulation package. Variations in cooling rate significantly influenced the microstructure and tensile properties of all three alloys

  4. Superplastic deformation of P/M and I/M Al-Li based alloys

    International Nuclear Information System (INIS)

    Lederich, R.J.; Sastry, S.M.L.

    1984-01-01

    Incremental strain-rate and constant strain-rate cone-forming tests have been carried out at 450-550 C to investigate the superplastic forming characteristics of Al-Li-Cu-Mn, Al-Li-Cu-Mg-Zr, and Al-Li-Zn-Mg alloys processed by powder-metallurgy (P/M) and ingot-metallurgy (I/M) techniques. It is found that P/M Al-Li alloys containing 0.2 pct Zr are inherently superplastically formable without the need for extensive thermomechanical processing. I/M Al-Li alloys containing Zr are also superplastically formable. The mechanical properties of the superplastically formed and solution-treated-and-aged alloys are comparable to those of solution-treated-and-aged alloys before superplastic forming. 6 references

  5. Correlation of microstructures, aging treatments, and properties of Al-Li-Cu-Mg-Zr I/M and P/M alloys

    International Nuclear Information System (INIS)

    Kar, R.J.; Bohlen, J.W.; Chanani, G.R.

    1984-01-01

    In a Northrop research program on Al-Li based alloys, the microstructures and heat treatment characteristics of two Al-Li-Cu-Mg-Zr alloys, one I/M (ingot metallurgy) and one P/M (powder metallurgy), were examined and correlated with properties obtained. Prior work had shown that this alloy system has a high payoff potential for aircraft applications. Following solution-heat-treatments, the artificial aging response of these alloys was determined, using hardness measurements. Microstructural characterization of these alloys was carried out using optical metallography and transmission electron microscopy (TEM) and phases were identified using X-ray methods, electron diffraction and Auger electron spectroscopy. The tensile and fracture toughness properties of the alloys were determined for selected tempers. Scanning electron microscopic (SEM) fracture examination was carried out on fractured tensile and fracture toughness coupons. The mechanical properties obtained and fracture behavior observed were correlated with significant microstructural features. 16 references

  6. Dual-Material Electron Beam Selective Melting: Hardware Development and Validation Studies

    Directory of Open Access Journals (Sweden)

    Chao Guo

    2015-03-01

    Full Text Available Electron beam selective melting (EBSM is an additive manufacturing technique that directly fabricates three-dimensional parts in a layerwise fashion by using an electron beam to scan and melt metal powder. In recent years, EBSM has been successfully used in the additive manufacturing of a variety of materials. Previous research focused on the EBSM process of a single material. In this study, a novel EBSM process capable of building a gradient structure with dual metal materials was developed, and a powder-supplying method based on vibration was put forward. Two different powders can be supplied individually and then mixed. Two materials were used in this study: Ti6Al4V powder and Ti47Al2Cr2Nb powder. Ti6Al4V has excellent strength and plasticity at room temperature, while Ti47Al2Cr2Nb has excellent performance at high temperature, but is very brittle. A Ti6Al4V/Ti47Al2Cr2Nb gradient material was successfully fabricated by the developed system. The microstructures and chemical compositions were characterized by optical microscopy, scanning microscopy, and electron microprobe analysis. Results showed that the interface thickness was about 300 μm. The interface was free of cracks, and the chemical compositions exhibited a staircase-like change within the interface.

  7. Muriithi, IM

    African Journals Online (AJOL)

    Muriithi, IM. Vol 8, No 2 (2014) - Articles Correlation of magnetic resonance imaging findings with arthroscopy in the evaluation of rotator cuff pathology. Abstract PDF · Vol 8, No 2 (2014) - Articles Patterns of knee, hip and hand osteoarthritis in Kenyatta National Hospital Abstract PDF. ISSN: 1994-1072. AJOL African ...

  8. Quick scan IMS vendors

    NARCIS (Netherlands)

    Norp, A.H.J.; Pals, H.; Walraven, F.A.

    2007-01-01

    IMS is gaining momentum in the market. First operators are deploying IMS, while other operators are considering buying IMS. Operators have two approaches for introducing IMS and building an IMS eco-system: • Buying IMS from a large vendor or system integrator. Vendors like Alcatel-Lucent, Ericsson

  9. Use of scrap in recycling alloys for structural applications in automotive engineering; Einsatz von Schrotten in Recyclinglegierungen fuer Strukturanwendungen im Automobilbau

    Energy Technology Data Exchange (ETDEWEB)

    Fragner, Werner [AMAG casting GmbH, Ranshofen (Austria). Prozessoptimierung; Hummel, Marc [AUDI AG, N/EK-111, Neckarsulm (Germany). Technologie-/Eigenschaftsentwicklung Metalle; Boesch, Dominik [Erlangen-Nuernberg Univ., Erlangen (Germany). Lehrstuhl fuer Allgemeine Werkstoffeigenschaften

    2013-01-15

    While the CO{sub 2} emissions of vehicles are further reduced by automotive companies, additionally the reduction of CO{sub 2} emissions during manufacturing of a car following a holistic approach is pursued by OEMs. As one of the first of them, Audi AG examines together with AMAG Casting GmbH the production of structural parts, which are made so far out of primary alloys. Components of this momentarily strong growing segment demand high mechanical properties, especially high elongation values in order to absorb as much energy as possible in a crash situation. In addition to iron, recycling alloys usually have further tramp elements, which occur inevitably by processing scrap. Besides of Cu and Zn, elements such as Cr, Pb, Bi, Sn etc. have to be considered, since they can negatively influence the alloy properties. The results of this article show that skilled scrap input and handling during alloy manufacturing can greatly reduce these negative effects in order to be negligible. It can be shown that a standardized, time saving gravity casting test can give a good measure to the behavior of an alloy in pressure die casting conditions and therefore account for an efficient alloy development. (orig.)

  10. Inductive Monitoring System (IMS)

    Data.gov (United States)

    National Aeronautics and Space Administration — IMS: Inductive Monitoring System The Inductive Monitoring System (IMS) is a tool that uses a data mining technique called clustering to extract models of normal...

  11. Bremssysteme im Personenkraftwagen

    Science.gov (United States)

    Reif, Konrad

    Für die ersten drei Punkte ist die Betriebsbremsanlage ("Fußbremse“) zuständig. Der Fahrer aktiviert sie durch Betätigen des Bremspedals. Die Feststellbremsanlage ("Handbremse“) hält das Fahrzeug im Stillstand.

  12. Geschlechterstereotype im Einsatz

    Directory of Open Access Journals (Sweden)

    Erika Kegyes

    2007-11-01

    Full Text Available Die umfangreiche Monographie gehört zum Forschungsbereich der kritischen angewandten Linguistik (Critical Applied Linguistics und liegt sowohl theoretisch als auch praktisch im Schnittpunkt der gender- und werbesprachlichen Untersuchungen.

  13. Resilience in IMS

    DEFF Research Database (Denmark)

    Kamyod, Chayapol; Nielsen, Rasmus Hjorth; Prasad, Neeli R.

    2012-01-01

    ) and supporting always on services. Therefore, not only Quality of Service (QoS) but also resilience is required. In this paper, we attempt to evaluate and analyze end-to-end reliability of the IMS system using a model proposed as a combination of Reliability Block Diagram (RBD) and Markov Reward Models (MRMs......Reliability evaluation of systems has been widely researched for improving system resilience especially in designing processes of a complex system. The convergence of different access networks is possible via IP Multimedia Subsystem (IMS) for development toward Next Generation Networks (NGNs......). The resilience of the IMS architecture is studied by applying 1:1 redundancy at different communication scenarios between end users within and across communication domains. The model analysis provides useful reliability characteristics of the system and can be further applied for system design processes....

  14. Delegation und Kooperation im Gesundheitswesen

    OpenAIRE

    Rosenau, Henning

    2010-01-01

    Delegation und Kooperation im Gesundheitswesen. - In: Tıpta işbirliği ve hukuksal sorunlar = Delegation und Kooperation im Gesundheitswesen / ed.: Hakan Hakeri ... - Samsun : Adalet, 2010. - S. 7-18

  15. Organisationsprobleme im Ökomarketing

    OpenAIRE

    Dienel, Wolfram

    2000-01-01

    Organisationsprobleme im Ökomarketing - eine transaktionskostentheoretische Analyse im Absatzkanal konventioneller Lebensmittelhandel Die im Vergleich zum großen Nachfragepotential zögerliche Entwicklung des Ökomarkts in Deutschland ist auf Organisationsprobleme zurückzuführen. Die Organisationsprobleme behindern insbesondere die großskalige Ökomarkterschließung über die konventionellen Supermarktketten, erschweren aber auch die Effizienzsteigerung im kleiner strukturierten alternativen N...

  16. IMS Application Developer's Handbook Creating and Deploying Innovative IMS Applications

    CERN Document Server

    Noldus, Rogier; Mulligan, Catherine; Fikouras, Ioannis; Ryde, Anders; Stille, Mats

    2011-01-01

    IMS Application Developer Handbook will give a hands-on view of exactly what needs to be done by IMS application developers to write an application and take it "live" on an operator's network. It will offer practical guidance on building innovative applications using the features and capabilities of the IMS network, show how the rapidly changing development environment is impacting on the business models employed in the industry and how existing network solutions can be moved towards IMS. The book will also elaborate on how IMS applies basic VoIP principles and techniques to realise a true mul

  17. Sexting im Schulumfeld

    Directory of Open Access Journals (Sweden)

    Barbara Buchegger

    2015-03-01

    Full Text Available Wir wollten es einfach wissen. Wie steht es nun mit diesem "Sexting" – also der Übermittlung von Nacktaufnahmen, die Jugendliche untereinander teilen? Stimmt unser Eindruck aus den Workshops in Schulen, dass es bereits ein "übliches Verhalten" der Jugendlichen geworden ist? Saferinternet.at hat im November/Dezember 2014 eine Studie durch das Institut für Jugendkulturforschung rund um das Thema "Sexting" in Auftrag gegeben.

  18. IMS applications analysis

    Energy Technology Data Exchange (ETDEWEB)

    RODACY,PHILIP J.; REBER,STEPHEN D.; SIMONSON,ROBERT J.; HANCE,BRADLEY G.

    2000-03-01

    This report examines the market potential of a miniature, hand-held Ion Mobility Spectrometer. Military and civilian markets are discussed, as well as applications in a variety of diverse fields. The strengths and weaknesses of competing technologies are discussed. An extensive Ion Mobility Spectrometry (IMS) bibliography is included. The conclusions drawn from this study are: (1) There are a number of competing technologies that are capable of detecting explosives, drugs, biological, or chemical agents. The IMS system currently represents the best available compromise regarding sensitivity, specificity, and portability. (2) The military market is not as large as the commercial market, but the military services are more likely to invest R and D funds in the system. (3) Military applications should be addressed before commercial applications are addressed. (4) There is potentially a large commercial market for rugged, hand-held Ion Mobility Spectrometer systems. Commercial users typically do not invest R and D funds in this type of equipment rather, they wait for off-the-shelf availability.

  19. Synthesis and mechanical properties of silicon-doped TiAl-alloys with grain sizes in the submicron range; Herstellung und mechanische Eigenschaften silizidhaltiger TiAl-Werkstoffe mit Korngroessen im Submikronbereich

    Energy Technology Data Exchange (ETDEWEB)

    Bohn, R. [GKSS-Forschungszentrum Geesthacht GmbH (Germany). Inst. fuer Werkstofforschung

    1999-07-01

    The objective of this study is to provide a comprehensive insight into the mechanical properties of nano- and submicron-grained intermetallics, containing ceramic particles as a second phase. The investigations are focussed on {gamma}-TiAl-based alloys with a fine dispersion of titanium silicides. The samples are prepared by high energy milling and subsequent hot isostatic pressing. The mechanical properties are mainly dominated by the grain size as the most important structural feature. At room temperature, the grain size dependence of hardness and yield strength can be described by the well-known Hall-Petch relationship. Contrary to the behavior of conventional alloys, the ductility of submicron-grained alloys drops if the grain size is further reduced. This may be attributed to the insignificance of diffusional creep at room temperature and to arising difficulties evolving for dislocation-based deformation mechanisms. In the high temperature range, the flow stress is strongly reduced. Superplastic deformation becomes feasible already at 800 C. The silicide particles impede grain growth, but they also promote cavitation during tensile straining. The mechanisms of deformation are similar to those established for coarse-grained materials at higher temperatures ({>=}1000 C). (orig.)

  20. Morphologies and growth mechanisms of the eutectic particles in as-cast Al-Mg-Sc alloy; Morphologien und Wachstumsmechanismen eutektischer Partikel in Al-Mg-Sc-Legierung im Gusszustand

    Energy Technology Data Exchange (ETDEWEB)

    Pan, Dejiang; Zhou, Shi' ang; Li, Heng [Hefei Univ. of Technology (China); Zhang, Zhen; Wu, Yucheng [Laboratories of Nonferrous Metal Material and Processing Engineering of Anhui Province, Hefei (China); Li, Ming [Anhui Jianghuai Automobile Co., Ltd, Hefei (China)

    2017-04-15

    Primary particles with faceted cubic morphology were produced in as-cast Al-Mg alloy due to the addition of Sc. The cross-section of the particles revealed some eutectic structure composed of multilayer of 'Al{sub 3}Sc + α-Al + Al{sub 3}Sc..'. At the cooling rate of 200 - 300 K/s, Al{sub 3}Sc primary phase nucleated initially on oxides within the melt and developed to a cubic structure with a 'cellular-dendritic' mode of growth. The formation of α-Al structural shells was attributed as a reason for the segregation of Mg-rich lamellar dendrites at later stages. A growth mechanism for multilayer structure was proposed using the results presented.

  1. Jung und Alt im Dialog

    Directory of Open Access Journals (Sweden)

    Caroline Baetge

    2012-04-01

    Full Text Available Rezension zu: Kupser, Thomas, und Ida Pöttinger, Hrsg. 2011. Mediale Brücken: Generationen im Dialog durch aktive Medienarbeit. Gesellschaft - Altern - Medien 3. München: kopaed.

  2. Gesundheit und Pflege im Alter

    OpenAIRE

    Pfaff, Martin

    1989-01-01

    Gesundheit und Pflege im Alter : d. Gesundheitsreformgesetz (GRG) ; Möglichkeiten, Grenzen u. weitere Vorschläge / Martin Pfaff ; Klaus Deimer. - In: Expertengespräch "Pflege in der Familie". - Augsburg, 1989. - Getr. Zählung

  3. Resilience of the IMS system

    DEFF Research Database (Denmark)

    Kamyod, Chayapol; Nielsen, Rasmus Hjorth; Prasad, Neeli R.

    2014-01-01

    The paper focuses on end-to-end resilience analysis of the IMS based network through the principal resilience parameters by using OPNET. The resilience behaviours of communication across multiple IMS domains are investigated at different communication scenarios and compared with previous state......-of-the-art. Moreover, the resilience effects when adding a redundancy of the S-CSCF unit are examined. The results disclose interesting resilience behaviours for long distance communications....

  4. Individualisierte Produkte im Fokus der intergrierten Produktentwicklung

    OpenAIRE

    Baumberger, C.;Gahr, A.

    2017-01-01

    Individualisierte Produkte stellen neue Herausforderungen an die Produktentwicklung – vornehmlich im Bereich der Produktstrukturplanung, der kundenindividuellen Produktadaption und dem Zielkostenmanagement. Diese Themen werden am Lehrstuhl für Produktentwicklung im Rahmen des Sonderforschungsbereiches 582 behandelt.

  5. Application of Hadamard transform in IMS

    International Nuclear Information System (INIS)

    Sha Miaomiao; Liu Weihao; Chen Yong; Jiang Dazhen

    2008-01-01

    Hadamard transform can improve the SNR by increasing the ion duty cycle in IMS. In this paper, the ion spectral signals were processed by Hadamard transform based on the IMS detector hardware platform. The results showed that Hadamard transform can greatly improve the SNR of the IMS detector in contrast with traditional method. (authors)

  6. Advanced Interval Management (IM) Concepts of Operations

    Science.gov (United States)

    Barmore, Bryan E.; Ahmad, Nash'at N.; Underwood, Matthew C.

    2014-01-01

    This document provides a high-level description of several advanced IM operations that NASA is considering for future research and development. It covers two versions of IM-CSPO and IM with Wake Mitigation. These are preliminary descriptions to support an initial benefits analysis

  7. Effect of processing variables on microstructure and properties of two Al-Li-Cu-Mg-Zr alloys

    International Nuclear Information System (INIS)

    Palmer, I.G.; Lewis, R.E.; Crooks, D.D.

    1984-01-01

    Two Al-Li-Cu-Mg-Zr alloys have been prepared in the form of both powder metallurgy (PM) and ingot metallurgy (IM) alloys. The compositions were selected to meet certain program goals based on the results of an alloy development phase, the details of which have been previously published. The target compositions were Al-3Li-1.5Cu-1Mg-0.2Zr and Al-3Cu-2Li-1Mg-0.2Zr. The PM alloys were prepared from chill cast remelt stock by centrifugal atomization in helium, followed by screening, degassing, and extrusion. The IM alloys were prepared by direct chill (DC) casting, homogenization and extrusion. Full details of the production of the alloys are given. The effects of various processing conditions on microstructure and properties were evaluated, including different heat treatments and stretching conditions. These effects are described in detail with particular emphasis on a comparison of the PM and IM alloys. 10 references

  8. Argumentellipse in der "weichen" Nachricht im Deutschen und im Slowenischen

    Directory of Open Access Journals (Sweden)

    Uršula Krevs

    1998-12-01

    Full Text Available Argumentellipsen werden in der sprachlichen Kommunikation ohne weiteres akzeptiert, obwohl sie allenfalls in gewissem Sinne wegen ihrer Elliptizität abweichend wirken. Im folgenden interessiert uns, wie die Argumentellipse als syntaktische Entität in den Text eingebettet wird und welche Funktionen sie ausübt. Unsere Aufmerksamkeit gilt bier der Textsorte "weiche" Nachricht, die als Abweichung des Grundmusters gilt. Um im Sprachenpaar Deutsch-Slowenisch die in dieser Textsorte realisierten Argumentellipsen vergleichen zu können, wurde die Homogenität in der Thematik angestrebt und die Texte aus dem gleichen Kommunikationsbereich gewählt. So wurden die Korpora zwei Zeitschriften, die sich mit der gleichen Sportart beschäftigen, entnommen: der deutschen Zeitschrift "Rotpunkt" und der slowenischen Zeitschrift  "Grif '.

  9. Using IMS VDEX in Agrega

    Directory of Open Access Journals (Sweden)

    Jose Manuel Canabal

    2009-03-01

    Full Text Available An essential element in a learning object repository is the meta-information associated with the resources housed by the repository, as this is what enables the objects to be retrieved. In many cases, the meta-information which is described consists of the classification of a resource in relation to a taxonomy or thesaurus. Agrega is a network of learning object repositories in which an LOM profile, called LOM-ES, has been used to label the objects. Part of the meta-information described corresponds to the classification of the object with respect to a group of taxonomies and a thesaurus, which have had to be described using the ims vdex standard to enable them to be managed from the federation nodes. This article describes the way in which ims vdex has been used in order to create this description and how these metadata instances are managed.

  10. Professionalisierung und Doping im Sport

    OpenAIRE

    Wüterich, Christoph

    2004-01-01

    Der Beitrag untersucht Zusammenhänge zwischen der zunehmenden Professionalisierung des Sports und dem Anstieg von Dopingvergehen. Er zeigt, dass im historischen Vergleich beide Phänomene nicht neu sind, dass sich die Probleme aufgrund der steigenden Bedeutung des Leistungssports aber zugespitzt haben. Ausgehend von einer juristischen und sozioökonomischen Analyse der Anreize zu Doping werden Lösungsvorschläge entwickelt. The author analyzes the interdependencies between a growing commercia...

  11. The IMS Software Integration Platform

    Science.gov (United States)

    1993-04-12

    products to incorporate all data shared by the IMS applications. Some entities (time-series, images, a algorithm -specific parameters) must be managed...dbwhoanii, dbcancel Transaction Management: dbcommit, dbrollback Key Counter Assignment: dbgetcounter String Handling: cstr ~to~pad, pad-to- cstr Error...increment *value; String Maniputation: int cstr topad (array, string, arraylength) char *array, *string; int arrayjlength; int pad tocstr (string

  12. Alloy materials

    Energy Technology Data Exchange (ETDEWEB)

    Hans Thieme, Cornelis Leo (Westborough, MA); Thompson, Elliott D. (Coventry, RI); Fritzemeier, Leslie G. (Acton, MA); Cameron, Robert D. (Franklin, MA); Siegal, Edward J. (Malden, MA)

    2002-01-01

    An alloy that contains at least two metals and can be used as a substrate for a superconductor is disclosed. The alloy can contain an oxide former. The alloy can have a biaxial or cube texture. The substrate can be used in a multilayer superconductor, which can further include one or more buffer layers disposed between the substrate and the superconductor material. The alloys can be made a by process that involves first rolling the alloy then annealing the alloy. A relatively large volume percentage of the alloy can be formed of grains having a biaxial or cube texture.

  13. Suchverhalten im Web: Empirische Ergebnisse

    OpenAIRE

    Schmidt-Mänz, Nadine

    2005-01-01

    Nadine Schmidt-Mänz vom Institut für Entscheidungstheorie u. Unternehmensforschung, Universität Karlsruhe, berichtete über „Suchverhalten im Web: Empirische Ergebnisse“. Rund 6000 Benutzer von Suchmaschinen füllten den von ihr hergestellten Online-Fragebogen aus. Einige ihrer Erkenntnisse: Als Suchmaschine wurde mit 91,3 % Google benutzt. Die Monopolstellung von Google war den Suchenden nicht bewußt. Einer der Schlüsse der Referentin: Es mangelt nicht an Suchmaschinen, sondern an der „Weitere...

  14. Digital Medien im Naturwissenschaftlichen Unterricht

    CERN Document Server

    Meßinger-Koppelt, Jenny

    2014-01-01

    „Morgens, 8 Uhr: Kurz vor der Schultür werden noch die neuesten Posts auf Facebook geliked, ein Selfie in die Whats-App-Gruppe hochgeladen oder auf YouTube noch ein #LOL-Video gestreamed. Dann klingelt es und die Digital Natives greifen wieder zu Stift, Papier und werden frontal mit Fakten gefüttert“ (A. Spang). Für Schüler sind Internet, Smartphone und Tablet-PC heute selbstverständlicher Teil ihrer Lernwelt. Und auch die Alltags- und Berufswelt ist ohne Informationstechnologien nicht mehr vorstellbar. Doch was bedeutet das für den Schulunterricht, insbesondere für die techniknahen Naturwissenschaften? Wie gelingt im Schulalltag die Balance zwischen Kreidezeit und interaktivem Whiteboard nach mittlerweile 30 Jahren Erfahrung mit Schulcomputern? Der vorliegende Sammelband präsentiert zahlreiche Praxisbeispiele aus dem Schulalltag zum sinnvollen Einsatz digitaler Medien im Biologie-, Chemie- und Physik-Unterricht sowie den aktuellen Stand der fachdidaktischen Forschung. Zu Wort kommen Hochschullehr...

  15. IMS Learning Design Frequently Asked Questions

    NARCIS (Netherlands)

    Tattersall, Colin; Manderveld, Jocelyn; Hummel, Hans; Sloep, Peter; Koper, Rob; De Vries, Fred

    2004-01-01

    This list of frequently asked questions was composed on the basis of questions asked of the Educational Technology Expertise Centrum. The questions addessed are: Where can I find the IMS Learning Design Specification? What is meant by the phrase “Learning Design”? What is the IMS LD Specification

  16. E2eUberIM

    DEFF Research Database (Denmark)

    Wac, Katarzyna; Cummings, Mark; Dey, Jayanta

    2016-01-01

    , high-quality services, we propose an innovative end-to-end service management framework called e2eUberIM. This framework contains a scalable, flexible, and volatile information model (UberIM) and a real-time, "organic" communication and storage process (e2eUber). It leverages the proprietary interfaces...... of different vendors, enabling the resulting enhanced operations system environment to automatically and in real-time optimize operational overhead while maximizing the user experience, and quickly field new innovative, composed "any-services" (XaaS). We document the e2eUberIM requirements and its design...

  17. Imágenes e identidades

    OpenAIRE

    Guerrini, Sebastión

    2013-01-01

    Las identidades se estructuran en un proceso de identificación continua con imágenes. Esto afecta no solo a las identidades de las personas, sino también a las de las instituciones, organizaciones y empresas. En este sentido, el rol de ser del Diseño en Comunicación Visual es intentar afectar a las identidades de los espectadores de sus imágenes. Por esta razón, primero es importante definir qué son las imágenes. Facultad de Bellas Artes

  18. I'm a Map, I'm a Green Tree

    Science.gov (United States)

    Anderson, Daniel

    2010-01-01

    I'm talking about the ways we represent ourselves and our world. I've put some thoughts on the topic together here--a gathering that enacts new media creating and takes up conceptual layers like metaphors, models, and composing. The primary sources are videos from the Get a Mac campaign, aka I'm a Mac; I'm a PC ads. Posthuman concepts blending…

  19. Innovationsmanagement im Marketing: Anleitung zur Innovations-Sensibilisierung und deren Umsetzung im Rahmen der Neuen Lernkultur

    OpenAIRE

    Mangisch, Christian; Blatter, Martin

    2009-01-01

    Der Kurs “Innovationsmanagement im Marketing“ vermittelt den Teilnehmenden Wissen zum Innovationsmanagement, zum innovativen Team und zu innovativen Marketing Trends. Diese Kurse sind online auf dem folgenden Link www.ritzycampus.ch zu finden. Die Teilnehmer müssen für den Online-Kurs keine speziellen Kenntnisse oder Voraussetzungen mitbringen. Diese Online-Kurse im Fach Marketing sind an ein breites Publikum gerichtet. Sie ermöglichen den Studierenden im Eigenstudium die Grundlagen der Theme...

  20. IMS Mitigation Target Areas - 2010 [ds673

    Data.gov (United States)

    California Natural Resource Agency — Mitigation Target Areas (MTA) were developed by the California Department of Fish and Game for the Interim Mitigation Strategy (IMS). The MTAs are an identification...

  1. [Variation im heutigen Deutsch...] / Laura Tidrike

    Index Scriptorium Estoniae

    Tidrike, Laura

    2008-01-01

    Arvustus: Variation im heutigen Deutsch : Perspektiven für den Sprachunterricht / hrsg. v. Eva Neuland. Frankfurt am Main : Lang, 2006. (Sprache - Kommunikation - Kultur. Soziolinguistische Beiträge ; Vol. 4)

  2. VANADIUM ALLOYS

    Science.gov (United States)

    Smith, K.F.; Van Thyne, R.J.

    1959-05-12

    This patent deals with vanadium based ternary alloys useful as fuel element jackets. According to the invention the ternary vanadium alloys, prepared in an arc furnace, contain from 2.5 to 15% by weight titanium and from 0.5 to 10% by weight niobium. Characteristics of these alloys are good thermal conductivity, low neutron capture cross section, good corrosion resistance, good welding and fabricating properties, low expansion coefficient, and high strength.

  3. Literatur zu Gast im Globe

    CERN Multimedia

    2006-01-01

    Der deutsche Schriftsteller Thomas LEHR liest am 23. März 2006 aus seinem Roman '42', einem philosophischen Abenteuerroman über die Suche nach der Zeit, erzählt in einer funkelnden und souveränen Sprache. Eine Welt von vernichtender Schönheit und bizarren Schrecken wartet auf eine Besuchergruppe, die in der Nähe von Genf die unterirdischen Anlagen des Forschungszentrums für Teilchenphysik CERN besichtigt. Als sie um 12:47:42 wieder ans Tageslicht tritt, scheint ganz Europa in einen Dornröschenschlaf gefallen. Allein die 70 Besucher können sich noch bewegen. Monate und Jahre verharrt die Welt wie in einer riesigen dreidimensionalen Fotografie, bis ein wiederum schockierendes Ereignis die 'Chronifizierten' aus ihren physikalischen Spekulationen und seltsamen Lebensformen reisst. Zu dieser literarischen Veranstaltung im 'Globe of Science and Innovation' laden gemeinsam das Generalkonsulat der Bundesrepublik Deutschland in Genf und CERN ein. Vor Beginn der Lesung wird eine Führung in deutscher Sprac...

  4. Gruppenbezogene Menschenfeindlichkeit im Sport in Brandenburg

    OpenAIRE

    Delto, Hannes; Tzschoppe, Petra

    2016-01-01

    Mit der Querschnittsstudie "Wir und die Anderen – Gruppenbezogene Menschenfeindlichkeit im organisierten Sport in Brandenburg" wurde das Syndrom Gruppenbezogener Menschenfeindlichkeit im organisierten Sport untersucht. Das Konzept der Gruppenbezogenen Menschenfeindlichkeit – ausgehend von einer Ideologie der Ungleichwertigkeit – wurde von Prof. Wilhelm Heitmeyer (Universität Bielefeld) entwickelt. Die Ergebnisse ermöglichen explizite Aussagen über Ausmaß und Ursachen Gruppenbezogener Menschen...

  5. Gruppenbezogene Menschenfeindlichkeit im Sport in Sachsen

    OpenAIRE

    Delto, Hannes; Tzschoppe, Petra

    2015-01-01

    Mit der Querschnittsstudie „Wir und die Anderen – Gruppenbezogene Menschenfeindlichkeit im organisierten Sport in Sachsen“ wurde erstmals das Syndrom Gruppenbezogener Menschenfeindlichkeit im organisierten Sport untersucht. Das Konzept der Gruppenbezogenen Menschenfeindlichkeit – ausgehend von einer Ideologie der Ungleichwertigkeit – wurde von Prof. Wilhelm Heitmeyer (Universität Bielefeld) entwickelt. Die Ergebnisse ermöglichen explizite Aussagen über Ausmaß und Ursachen Gruppenbezogener Men...

  6. Verletzungen und Fehlbeanspruchungen im leistungsorientierten Rudersport

    OpenAIRE

    Bussian, Marc Robert

    2004-01-01

    Die Stellung der Breitensportart Rudern als gesundheitsfördernde Sportform ist in der Literatur gleichlautend positiv beschrieben. Im leistungsorientierten Rudersport müssen neben den Verletzungen und Fehlbeanspruchungen der eigentlichen Sportart die unabdingbaren Nebentrainingsformen berücksichtigt werden. In den neunziger Jahren vollzog sich ein trainingsmethodischer Wandel, die Einführung eines erschwinglichen Rudersimulators und eine technische Weiterentwicklung im Boots- und Ruderbau. Ei...

  7. Phase transformations im smart materials

    International Nuclear Information System (INIS)

    Newnham, R.E.

    1998-01-01

    One of the qualities that distinguishes living systems from inanimate matter is the ability to adapt to changes in the environment. Smart materials have the ability to perform both sensing and actuating functions and are, therefore, capable of imitating this rudimentary aspect of life. Four of the most widely used smart materials are piezoelectric Pb(Zr, Ti)O 3 , electrostrictive Pb(Mg, Nb)O 3 , magnetostrictive (Tb, Dy)Fe 2 and the shape-memory alloy NiTi. All four are ferroic with active domain walls and two phase transformations, which help to tune the properties of these actuator materials. Pb(Zr, Ti)O 3 is a ferroelectric ceramic which is cubic at high temperature and becomes ferroelectric on cooling through the Curie temperature. At room temperature, it is poised on a rhombohedral-tetragonal phase boundary which enhances the piezoelectric coefficients. Terfenol, (Tb, Dy)Fe 2 , is also cubic at high temperature and then becomes magnetic on cooling through its Curie temperature. At room temperature, it too is poised on a rhombohedral-tetragonal transition which enhances its magnetostriction coefficients. Pb(Mg, Nb)O 3 and nitinol (NiTi) are also cubic at high temperatures and on annealing transform to a partially ordered state. On further cooling, Pb(Mg, Nb)O 3 passes through a diffuse phase transformation at room temperature where it exhibits very large dielectric and electrostrictive coefficients. Just below room temperature, it transforms to a ferroelectric rhombohedral phase. The partially ordered shape-memory alloy NiTi undergoes an austenitic (cubic) to martensitic (mono-clinic) phase change just above room temperature. It is easily deformed in the martensitic state but recovers its original shape when reheated to austenite

  8. The stress-corrosion cracking behavior of high-strength aluminum powder metallurgy alloys

    Science.gov (United States)

    Pickens, J. R.; Christodoulou, L.

    1987-01-01

    The susceptibility to stress-corrosion cracking (SCC) of rapidly solidified (RS) aluminum powder metallurgy (P/M) alloys 7090 and 7091, mechanically alloyed aluminum P/M alloy IN* 9052, and ingot metallurgy (I/M) alloys of similar compositions was compared using bolt-loaded double cantilever beam specimens. In addition, the effects of aging, grain size, grain boundary segregation, pre-exposure embrittlement, and loading mode on the SCC of 7091 were independently assessed. Finally, the data generated were used to elucidate the mechanisms of SCC in the three P/M alloys. The IN 9052 had the lowest SCC susceptibility of all alloys tested in the peak-strength condition, although no SCC was observed in the two RS alloys in the overaged condition. The susceptibility of the RS alloys was greater in the underaged than the peak-aged temper. We detected no significant differences in susceptibility of 7091 with grain sizes varying from 2 to 300 μm. Most of the crack advance during SCC of 7091 was by hydrogen embrittlement (HE). Furthermore, both RS alloys were found to be susceptible to preexposure embrittlement—also indicative of HE. The P/M alloys were less susceptible to SCC than the I/M alloys in all but one test.

  9. Nonswelling alloy

    Science.gov (United States)

    Harkness, S.D.

    1975-12-23

    An aluminum alloy containing one weight percent copper has been found to be resistant to void formation and thus is useful in all nuclear applications which currently use aluminum or other aluminum alloys in reactor positions which are subjected to high neutron doses.

  10. Nonswelling alloy

    International Nuclear Information System (INIS)

    Harkness, S.D.

    1975-01-01

    An aluminum alloy containing one weight percent copper has been found to be resistant to void formation and thus is useful in all nuclear applications which currently use aluminum or other aluminum alloys in reactor positions which are subjected to high neutron doses

  11. Integrating IMS LD and IMS QTIv2 using CopperCore Service Integration

    NARCIS (Netherlands)

    Vogten, Hubert

    2006-01-01

    Vogten, H. (2006). Integrating IMS LD and IMS QTIv2 using CopperCore Service Integration. Presentation at International Workshop in Learning Networks for Lifelong Competence Development. March, 30-31, 2006. Sofia, Bulgaria: TENCompetence Conference. Retrieved June 30th, 2006, from

  12. CopperCore Service Integration, Integrating IMS Learning Design and IMS Question and Test Interoperability

    NARCIS (Netherlands)

    Vogten, Hubert; Martens, Harrie; Nadolski, Rob; Tattersall, Colin; Van Rosmalen, Peter; Koper, Rob

    2006-01-01

    Vogten, H., Martens, H., Nadolski, R., Tattersall, C., Rosmalen, van, P., Koper, R., (2006). CopperCore Service Integration, Integrating IMS Learning Design and IMS Question and Test Interoperability. Proceedings of the 6th IEEE International Conference on Advanced Learning Technologies (pp.

  13. Integrating IMS Learning Design and IMS Question and Test Interoperability using CopperCore Service Integration

    NARCIS (Netherlands)

    Vogten, Hubert; Martens, Harrie; Nadolski, Rob; Tattersall, Colin; Van Rosmalen, Peter; Koper, Rob

    2006-01-01

    Please, cite this publication as: Vogten, H., Martens, H., Nadolski, R., Tattersall, C., van Rosmalen, P., & Koper, R. (2006). Integrating IMS Learning Design and IMS Question and Test Interoperability using CopperCore Service Integration. Proceedings of International Workshop in Learning Networks

  14. Δim-lacunary statistical convergence of order α

    Science.gov (United States)

    Altınok, Hıfsı; Et, Mikail; Işık, Mahmut

    2018-01-01

    The purpose of this work is to introduce the concepts of Δim-lacunary statistical convergence of order α and lacunary strongly (Δim,p )-convergence of order α. We establish some connections between lacunary strongly (Δim,p )-convergence of order α and Δim-lacunary statistical convergence of order α. It is shown that if a sequence is lacunary strongly (Δim,p )-summable of order α then it is Δim-lacunary statistically convergent of order α.

  15. Electrical Resistance Alloys and Low-Expansion Alloys

    DEFF Research Database (Denmark)

    Kjer, Torben

    1996-01-01

    The article gives an overview of electrical resistance alloys and alloys with low thermal expansion. The electrical resistance alloys comprise resistance alloys, heating alloys and thermostat alloys. The low expansion alloys comprise alloys with very low expansion coefficients, alloys with very low...... thermoelastic coefficients and age hardenable low expansion alloys....

  16. Radiological information management system (RadIMS)

    International Nuclear Information System (INIS)

    Oesterling, R.G.; Marko, S.A.; Tschaeche, A.N.

    1991-01-01

    Westinghouse Idaho Nuclear Company, Inc. (WINCO) is developing and implementing an information management system, known as RadIMS, to track and record personnel exposure to ionizing radiation. RadIMS has been designed to fulfill all the requirements of US Department of Energy (USDOE) Order 5480.11, ''Radiation Protection for Occupational Workers.'' This Order requires the contractor to maintain detailed radiation exposure records on all individuals who work at the facility. These records must be retrievable for the entire working life of the individual and be available to other USDOE contractors on request. To meet these general needs, RadIMS provides for retrieval of detailed, comprehensive individual exposure histories as well as the usual online interactions to accomplish day-today radiation protection operations. These two extremes of functionality require different approaches in the WINCO computing environment. The exposure histories include database text, paper, microfilm, and electronic bitmaps

  17. Radiological information management system (RadIMS)

    Energy Technology Data Exchange (ETDEWEB)

    Oesterling, R.G.; Marko, S.A.; Tschaeche, A.N.

    1991-08-19

    Westinghouse Idaho Nuclear Company, Inc. (WINCO) is developing and implementing an information management system, known as RadIMS, to track and record personnel exposure to ionizing radiation. RadIMS has been designed to fulfill all the requirements of US Department of Energy (USDOE) Order 5480.11, Radiation Protection for Occupational Workers.'' This Order requires the contractor to maintain detailed radiation exposure records on all individuals who work at the facility. These records must be retrievable for the entire working life of the individual and be available to other USDOE contractors on request. To meet these general needs, RadIMS provides for retrieval of detailed, comprehensive individual exposure histories as well as the usual online interactions to accomplish day-today radiation protection operations. These two extremes of functionality require different approaches in the WINCO computing environment. The exposure histories include database text, paper, microfilm, and electronic bitmaps.

  18. Radiological information management system (RadIMS)

    Energy Technology Data Exchange (ETDEWEB)

    Oesterling, R.G.; Marko, S.A.; Tschaeche, A.N.

    1991-08-19

    Westinghouse Idaho Nuclear Company, Inc. (WINCO) is developing and implementing an information management system, known as RadIMS, to track and record personnel exposure to ionizing radiation. RadIMS has been designed to fulfill all the requirements of US Department of Energy (USDOE) Order 5480.11, ``Radiation Protection for Occupational Workers.`` This Order requires the contractor to maintain detailed radiation exposure records on all individuals who work at the facility. These records must be retrievable for the entire working life of the individual and be available to other USDOE contractors on request. To meet these general needs, RadIMS provides for retrieval of detailed, comprehensive individual exposure histories as well as the usual online interactions to accomplish day-today radiation protection operations. These two extremes of functionality require different approaches in the WINCO computing environment. The exposure histories include database text, paper, microfilm, and electronic bitmaps.

  19. Midlatitude magnetometer chains during the IMS

    International Nuclear Information System (INIS)

    Mcpherron, R.L.

    1982-01-01

    The International Magnetospheric Study (IMS) is an international program to study global problems of magnetospheric dynamics. A key element of the U.S. participation in this program was the establishment of a ground magnetometer network. This network included a number of arrays at high and low latitudes. This report describes three chains established at midlatitudes, including the IMS Midlatitude Chain, the AFGL Magnetometer Network, and the Bell Lab Conjugate Array. Descriptions of the type of equipment, station locations, types of data display, and availability of data for each chain are presented in this report. A major problem of the data analysis phase of the IMS will be reducing selected subsets of these data to a common format. Currently, there are no plans to do this in a systematic manner

  20. Examination of the anisotropy of the wetting behaviour of liquid Al-Cu alloys on single crystalline oriented Al{sub 2}O{sub 3}-substrates; Untersuchung der Anisotropie im Benetzungsverhalten fluessiger Al-Cu Legierungen auf einkristallinen orientierten Al{sub 2}O{sub 3}-Substraten

    Energy Technology Data Exchange (ETDEWEB)

    Schmitz, Julianna

    2011-02-04

    The wetting behaviour of liquid Al-Cu alloys and pure metals on oriented single crystalline Al{sub 2}O{sub 3}-substrates was examined, utilising the sessile drop technique. Measurements were performed at moderate temperatures of 1100 C, where the alloys are liquid. Different Al{sub 2}O{sub 3}-surfaces were studied, which are terminated by the crystallographic planes (0001), (11 anti 20), and (1 anti 102), also called C-, A-, and R-surfaces. After deposition, pure Cu-droplets show an exponential increase of the wetting angle to a value of about 115 for all investigated Al{sub 2}O{sub 3}-surfaces. The timescale of this increase is of the order of 100 s. The effect of surface- and interfacial energies on the wetting angle is discussed considering Young's equation. The most probable reason for its time-dependence seems to be an increase of the interfacial energy due to deoxidation of the droplet. Therefore it is reasonable to regard the isotropic contact angle value as the intrinsic one of the Cu/Al{sub 2}O{sub 3} system. In contrast, the wetting angle of pure Al metal with the different Al{sub 2}O{sub 3}-substrates shows a qualitatively different behaviour. In this system, it rises from about 90 to 115 roughly for C-substrates, twice as fast as in the Cu case but to a comparable value. On the other substrates a wetting angle of about 90 establishes immediately, and no pronounced time dependence is obvious. In order to study changes in the wetting behaviour of Al-Cu-alloys, which is isotropic for Cu and anisotropic for Al-rich alloys, contact angles of Al{sub 50}Cu{sub 50}, Al{sub 30}Cu{sub 70} und Al{sub 17}Cu{sub 83} on Al{sub 2}O{sub 3} were determined. For each alloy composition the wetting angle is about 120 after 300 s. The initial values on distinct surfaces hardly differ and become non-wetting with increasing Cu-content. Hence, anisotropy decreases. To determine the work of adhesion of the solid-liquid interface, the temperature- and composition

  1. Developing an effective IM/IT strategy.

    Science.gov (United States)

    Kramer, Sarah; Walker, Joanne; Falk, Will

    2009-01-01

    Healthcare organizations and systems around the world lag far behind banking, manufacturing, travel and other industries in their use of information management/information technology (IM/IT) to deliver high-quality products and services. Across Canada, healthcare organizations, as well as governments, understand that information and information technology are needed to deliver quality care and to sustain our publicly funded health system. However, insufficient funding, few experienced resources, lack of strong leadership and absence of clear business/clinical rationale have restricted innovation and advancement in the use of IM/IT to improve healthcare delivery and patient outcomes.

  2. Order/disorder in electrodeposited aluminum-titanium alloys

    Directory of Open Access Journals (Sweden)

    Stafford G.R.

    2003-01-01

    Full Text Available The composition, morphology, and crystallographic microstructure of Al-Ti alloys electrodeposited from two different chloroaluminate molten salt electrolytes were examined. Alloys containing up to 28 % atomic fraction Ti were electrodeposited at 150 °C from 2:1 AlCl3-NaCl with controlled additions of Ti2+. The apparent limit on alloy composition is proposed to be due to a mechanism by which Al3Ti forms through the reductive decomposition of [Ti(AlCl43]-. The composition of Al-Ti alloys electrodeposited from the AlCl3-EtMeImCl melt at 80 °C is limited by the diffusion of Ti2+ to the electrode surface. Alloys containing up to 18.4 % atomic fraction Ti are only obtainable at high Ti2+ concentrations in the melt and low current densities. Alloys electrodeposited from the higher temperature melt have an ordered L12 crystal structure while alloys of similar composition but deposited at lower temperature are disordered fcc. The appearance of antiphase boundaries in the ordered alloys suggests that the deposit may be disordered initially and then orders in the solid state, subsequent to the charge transfer step and adatom incorporation into the lattice. This is very similar to the disorder-trapping observed in rapidly solidified alloys. The measured domain size is consistent with a mechanism of diffusion-controlled doman growth at the examined deposition temperatures and times.

  3. Systeme im Einsatz. Lernmanagement, Kompetenzmanagement und PLE

    NARCIS (Netherlands)

    Kalz, Marco; Schön, Sandra; Lindner, Martin; Roth, Detlev; Baumgartner, Peter

    2011-01-01

    Kalz, M., Schön, S., Lindner, M., Roth, D., & Baumgartner, P. (2011). Systeme im Einsatz. Lernmanagement, Kompetenzmanagement und PLE. In M. Ebner, & S. Schön (Eds.), L3T - Lerhbuch für Lernen und Lehren mit Technologie (pp. 111-118). Graz, Austria: Uni Graz. Available at

  4. IMS Learning Design: De stand van zaken

    NARCIS (Netherlands)

    Tattersall, Colin; Manderveld, Jocelyn

    2005-01-01

    Tattersall, C. & Manderveld, J. (2004) IMS Learning Design: De stand van zaken In: Gorissen, P., Manderveld, J., Benneker, F. & Cordewener, B. Leertechnologie in de Lage Landen (pp. 31-33). Utrecht, Stichting Surf. Ook beschikbaar in dspace: http://hdl.handle.net/1820/270

  5. An IMS testbed for SIP applications

    DEFF Research Database (Denmark)

    Caba, Cosmin Marius; Soler, José

    2013-01-01

    The paper presents the design and implementation of an emulation platform for the IP Multimedia Subsystem. The SIP Servlet API v1.1 has been used to implement the final system. The purpose of the emulation is to offer to IMS service developers an environment where they can integrate development...

  6. Managing P2P services via the IMS

    NARCIS (Netherlands)

    Liotta, A.; Lin, L.

    2007-01-01

    The key aim of our work was to illustrate the benefits and means to deploy P2P services via the IMS. Having demonstrated the technical viability of P2P-IMS we have also found a way to add a new management dimension to existing P2P systems. P2P-IMS comes with a natural "data management" mechanism,

  7. [Kriegsland im Osten Eroberung, Kolonisierung und Militärherrschaft im Ersten Weltkrieg] / Markus Pöhlmann

    Index Scriptorium Estoniae

    Pöhlmann, Markus

    2003-01-01

    Rets.: Vejas Gabriel Liulevicius. Kriegsland im Osten Eroberung, Kolonisierung und Militärherrschaft im Ersten Weltkrieg. Aus dem Amerikanischen von Jürgen Bauer, Edith Nerke und Fee Engemann. Hamburg : 2002

  8. Superconducting alloys

    International Nuclear Information System (INIS)

    Bowers, J.E.

    1976-01-01

    Reference is made to superconductors having high critical currents. The superconductor described comprises an alloy consisting of a matrix of a Type II superconductor which is a homogeneous mixture of 50 to 95 at.% Pb and 5 to 40 at.%Bi and/or 10 to 50 at.%In. Dispersed in the matrix is a material to provide pinning centres comprising from 0.01% to 20% by volume of the alloy; this material is a stable discontinuous phase of discrete crystalline particles of Cu, Mn, Te, Se, Ni, Ca, Cr, Ce, Ge or La, either in the form of the element or a compound with a component of the matrix. These particles should have an average diameter of not more than 2μ. A method for making this alloy is described. (U.K.)

  9. The Application of Internal Marketing (IM in a Service Organization

    Directory of Open Access Journals (Sweden)

    R. Sharma

    2013-07-01

    Findings and Strategic Implications. To complement earlier theoretical proposition on IM, the findings indicate that there are several empirical aspects such as “costs, people and concept” which hinder successful implementation of IM. This study proposes several strategic HR recommendations to reduce the “implementation gap” in IM such as to conduct continuous staff training on IM knowledge on regular time intervals, to reduce excessive work load and pressure and engaging staff members in continuous personal development sessions. In addition, the findings reveal that IM training should be given priority to solve “people-oriented” issues.

  10. λ (Δim) -statistical convergence of order α

    Science.gov (United States)

    Colak, Rifat; Et, Mikail; Altin, Yavuz

    2017-09-01

    In this study, using the generalized difference operator Δim and a sequence λ = (λn) which is a non-decreasing sequence of positive numbers tending to ∞ such that λn+1 ≤ λn+1, λ1 = 1, we introduce the concepts of λ (Δim) -statistical convergence of order α (α ∈ (0, 1]) and strong λ (Δim) -Cesàro summablility of order α (α > 0). We establish some connections between λ (Δim) -statistical convergence of order α and strong λ (Δim) -Cesàro summablility of order α. It is shown that if a sequence is strongly λ (Δim) -Cesàro summable of order α, then it is λ (Δim) -statistically convergent of order β in case 0 < α ≤ β ≤ 1.

  11. Silicon Alloying On Aluminium Based Alloy Surface

    International Nuclear Information System (INIS)

    Suryanto

    2002-01-01

    Silicon alloying on surface of aluminium based alloy was carried out using electron beam. This is performed in order to enhance tribological properties of the alloy. Silicon is considered most important alloying element in aluminium alloy, particularly for tribological components. Prior to silicon alloying. aluminium substrate were painted with binder and silicon powder and dried in a furnace. Silicon alloying were carried out in a vacuum chamber. The Silicon alloyed materials were assessed using some techniques. The results show that silicon alloying formed a composite metal-non metal system in which silicon particles are dispersed in the alloyed layer. Silicon content in the alloyed layer is about 40% while in other place is only 10.5 %. The hardness of layer changes significantly. The wear properties of the alloying alloys increase. Silicon surface alloying also reduced the coefficient of friction for sliding against a hardened steel counter face, which could otherwise be higher because of the strong adhesion of aluminium to steel. The hardness of the silicon surface alloyed material dropped when it underwent a heating cycle similar to the ion coating process. Hence, silicon alloying is not a suitable choice for use as an intermediate layer for duplex treatment

  12. Emotionsregulationsstrategien und aggressives Verhalten im Kindergartenalter

    OpenAIRE

    Helmsen, Johanna; Petermann, Franz

    2010-01-01

    In der vorliegenden Studie (N = 193) wurde untersucht, ob sich körperlich und relational aggressive Kinder im Kindergartenalter (mittleres Alter: 55 Monate) in ihren Emotionsregulationsstrategien von ihren unauffälligen Altersgenossen unterscheiden. Zur Erhebung der Emotionsregulation wurde eine strukturierte, videografierte Verhaltensbeobachtung durchgeführt, in der gezielt Frustration ausgelöst wurde. Anschließend wurden Regulationsstrategien in sieben verschiedenen Kategorien ausgewertet. ...

  13. THOR Ion Mass Spectrometer instrument - IMS

    Science.gov (United States)

    Retinò, Alessandro; Kucharek, Harald; Saito, Yoshifumi; Fraenz, Markus; Verdeil, Christophe; Leblanc, Frederic; Techer, Jean-Denis; Jeandet, Alexis; Macri, John; Gaidos, John; Granoff, Mark; Yokota, Shoichiro; Fontaine, Dominique; Berthomier, Matthieu; Delcourt, Dominique; Kistler, Lynn; Galvin, Antoniette; Kasahara, Satoshi; Kronberg, Elena

    2016-04-01

    Turbulence Heating ObserveR (THOR) is the first mission ever flown in space dedicated to plasma turbulence. Specifically, THOR will study how turbulent fluctuations at kinetic scales heat and accelerate particles in different turbulent environments within the near-Earth space. To achieve this goal, THOR payload is being designed to measure electromagnetic fields and particle distribution functions with unprecedented resolution and accuracy. Here we present the Ion Mass Spectrometer (IMS) instrument that will measure the full three-dimensional distribution functions of near-Earth main ion species (H+, He+, He++ and O+) at high time resolution (~ 150 ms for H+ , ~ 300 ms for He++) with energy resolution down to ~ 10% in the range 10 eV/q to 30 keV/q and angular resolution ~ 10°. Such high time resolution is achieved by mounting multiple sensors around the spacecraft body, in similar fashion to the MMS/FPI instrument. Each sensor combines a top-hat electrostatic analyzer with deflectors at the entrance together with a time-of-flight section to perform mass selection. IMS electronics includes a fast sweeping high voltage board that is required to make measurements at high cadence. Ion detection includes Micro Channel Plates (MCP) combined with Application-Specific Integrated Circuits (ASICs) for charge amplification, discrimination and time-to-digital conversion (TDC). IMS is being designed to address many of THOR science requirements, in particular ion heating and acceleration by turbulent fluctuations in foreshock, shock and magnetosheath regions. The IMS instrument is being designed and will be built by an international consortium of scientific institutes with main hardware contributions from France, USA, Japan and Germany.

  14. Experimentelle Untersuchungen zur sonographischen Frakturdiagnostik im Kinderalter

    OpenAIRE

    Meuser, Stefan Heinrich Peter

    2010-01-01

    Falsch diagnostiziert und nicht korrekt therapiert können Frakturen im Kindesalter zu Wachstumsstörungen und damit verbundenen lebenslangen Problemen führen. Nach einem Trauma ist die klinische Untersuchung und Bestimmung des Schmerzmaximums gerade bei Kindern oft sehr schwierig. So müssen häufig mehrere Röntgenaufnahmen getätigt werden, ehe eine Fraktur sicher diagnostiziert oder ausgeschlossen werden kann. Die hierbei auftretende ionisierende Strahlung geht jedoch besonder...

  15. Professionelle Literaturrecherche und -verwaltung im Web [Praxisbericht

    OpenAIRE

    Schaffert, Sandra

    2007-01-01

    In diesem Beitrag werden Hinweise für eine professionelle Literaturrecherche und -verwaltung im World Wide Web gegeben. Dazu werden für die pädagogische Ausbildung und Forschung einschlägige Literaturdatenbanken genannt, insbesondere solche, die kostenlos zu nutzen sind. Außerdem werden Tipps für clevere Recherchen sowie eine kurze Übersicht über Web-Werkzeuge zur Verwaltung von bibliografischen Angaben gegeben. (DIPF/Orig.)

  16. Dynamik des Kaufverhaltens im Bio-Sortiment

    OpenAIRE

    Buder, Fabian; Hamm, Ulrich; Bickel, Malte; Bien, Barbara; Michels, Paul

    2010-01-01

    Das Gesamtziel des vorliegenden Forschungsprojekts war es, eine detaillierte Informationsgrundlage zum tatsächlichen Kaufverhalten von deutschen Haushalten bei ökologischen Lebensmitteln auf der Basis von Haushaltspaneldaten zu erstellen. Dazu sollten zum einen relevante Aspekte des Kaufverhaltens von Haushalten bei Öko-Lebensmitteln im Zeitverlauf von 2004 bis 2008 analysiert und zum anderen die Einflussfaktoren des Kaufverhaltens bei Öko-Lebensmitteln für das Jahr 2008 identifiziert werden....

  17. Gewerbsmässigkeit im schweizerischen Luftrecht

    OpenAIRE

    Müller, Roland

    2005-01-01

    Der Begriff der Gewerbsmässigkeit hat im schweizerischen Luftrecht eine grosse Bedeutung. Werden gewerbsmässige Flüge ohne die entsprechenden Bewilligungen und Voraussetzungen durchgeführt, so resultieren gravierende zivilrechtliche, strafrechtliche und administrative Konsequenzen. In den massgebenden internationalen Luftfahrtabkommen findet sich keine Definition der Gewerbsmässigkeit, dies wird den einzelnen Staaten überlassen. Nur in den Joint Aviation Requirements und in der EU-Zollver...

  18. Toward an Intelligent Ion Mobility Spectrometer (IMS)

    International Nuclear Information System (INIS)

    McJunkin, Timothy R.; Scott, Jill R.; Miller, Carla J.

    2003-01-01

    The ultimate goal is to design and build a very smart ion mobility spectrometer (IMS) that can operate autonomously. To accomplish this, software capable of interpreting spectra so that it can be used in control loops for data interpretation as well as adjusting instrument parameters is being developed. Fuzzy logic and fuzzy numbers are used in this IMS spectra classification scheme. Fuzzy logic provides a straight forward method for developing a classification/detection system, whenever rules for classifying the spectra can be described linguistically. Instead of using 'max' and 'min' values, the product of the truth values is used to determine class membership. Using the product allows rule-bases that utilize the AND function to allow each condition to discount truth value in determining membership, while rule-bases with an OR function are allowed to accumulate membership. Fuzzy numbers allow encapsulation of the uncertainties due to ion mobility peak widths as well as measured instrumental parameters, such as pressure and temperature. Associating a peak with a value of uncertainty, in addition to making adjustments to the mobility calculation based on variations in measured parameters, enables unexpected shifts to be more reliably detected and accounted for; thereby, reducing the opportunity for 'false negative' results. The measure of uncertainty is anticipated to serve the additional purpose of diagnosing the operational conditions of the IMS instrument.

  19. Grand Prix Eurovision: Eine Fankultur im Medienzeitalter

    Directory of Open Access Journals (Sweden)

    Heinz Moser

    2017-06-01

    Full Text Available Der Grand Prix Eurovision ist seit Jahrzehnten eine der bekanntesten Unterhaltungssendungen im europäischen Raum. Dennoch erregte es Verwunderung, wenn der Schreibende Bekannten darüber berichtete, daß dies ein Forschungsgegenstand sei. Wurde von Interviews mit Grand Prix-Fans erzählt, so fielen schnell Aussagen wie: „Wie kann man sich nur für so etwas Abseitiges und Triviales wie den Grand Prix interessieren“. Dennoch bin ich der Meinung, daß Fankulturen für die entstehende Mediengesellschaft ein nicht unwichtiges Forschungsthema darstellen. Zwar geht es nicht um eine medienpädagogische Fragestellung im engeren Sinne; die Fans des Grand Prix Eurovision sind dem Jugendalter längst entwachsen. Dennoch handelt es sich bei Fangemeinschaften um Phänomene, die im Rahmen von Jugend- und Kinderkulturen von besonderer Relevanz sind. So meint Winter (1997, daß jugendliche Fanwelten eine bedeutende Rolle als Kristallisationspunkte kultureller Differenzierung spielen: ,Die Zugehörigkeit zu einer Fan weit ist Teil der jugendlichen Lebensbewältigung in der Postmoderne, denn in der Gemeinschaft der Fans können Jugendliche emotionale Allianzen eingehen, außeralltäglichen Beschäftigungen nachgehen, expressive Identitätsmuster gemeinschaftlich realisieren und sich mit ihrer Lebenssituation als Heranwachsende auseinandersetzen“ (Winter 1997, S. 51f..

  20. Cyberbullying und Empathie : affektive, kognitive und medienbasierte Empathie im Kontext von Cyberbullying im Kindes- und Jugendalter

    OpenAIRE

    Pfetsch, Jan; Müller, Christin R.; Ittel, Angela

    2014-01-01

    "Bei medial vermittelter Kommunikation sinkt sowohl die Hemmschwelle für aggressive Verhaltensweisen wie Cyberbullying als auch die Wahrscheinlichkeit empathischer Reaktionen. Im Fokus der vorliegenden Studie mit 979 Schülerinnen und Schülern der 4.-8. Klassen (M=12.01, SD=1.68 Jahre, 55% weiblich) stand die Frage, ob Cyberbullies geringere Ausprägungen für affektive, kognitive und medienbasierte Empathie aufweisen als Unbeteiligte. Empathie wurde im Selbst- und Peerbericht erhoben. Hypothese...

  1. NASA-UVA Light Aerospace Alloy and Structure Technology Program Supplement: Aluminum-Based Materials for High Speed Aircraft

    Science.gov (United States)

    Starke, E. A., Jr.

    1997-01-01

    This is the final report of the study "Aluminum-Based Materials for High Speed Aircraft" which had the objectives (1) to identify the most promising aluminum-based materials with respect to major structural use on the HSCT and to further develop those materials and (2) to assess the materials through detailed trade and evaluation studies with respect to their structural efficiency on the HSCT. The research team consisted of ALCOA, Allied-Signal, Boeing, McDonnell Douglas, Reynolds Metals and the University of Virginia. Four classes of aluminum alloys were investigated: (1) I/M 2XXX containing Li and I/M 2XXX without Li, (2) I/M 6XXX, (3) two P/M 2XXX alloys, and (4) two different aluminum-based metal matrix composites (MMC). The I/M alloys were targeted for a Mach 2.0 aircraft and the P/M and MMC alloys were targeted for a Mach 2.4 aircraft. Design studies were conducted using several different concepts including skin/stiffener (baseline), honeycomb sandwich, integrally stiffened and hybrid adaptations (conventionally stiffened thin-sandwich skins). Alloy development included fundamental studies of coarsening behavior, the effect of stress on nucleation and growth of precipitates, and fracture toughness as a function of temperature were an integral part of this program. The details of all phases of the research are described in this final report.

  2. Security in the internet; Sicherheitsaspekte im Internet

    Energy Technology Data Exchange (ETDEWEB)

    Seibel, R.M.M.; Kocher, K.; Landsberg, P. [Witten-Herdecke Univ., Witten (Germany). Inst. fuer Diagnostische und Interventionelle Radiologie

    2000-04-01

    Aim of the study: Is it possible to use the Internet as a secure media for transport of telemedicine? Which risks exist for routine use? In this article state of the art methods of security were analysed. Telemedicine in the Internet has severe risks, because patient data and hospital data of a secure Intranet can be manipulated by connecting it to the Web. Conclusions: Establishing of a firewall and the introduction of HPC (Health Professional Card) are minimizing the risk of un-authorized access to the hospital server. HPC allows good safety with digital signature and authentication of host and client of medical data. For secure e-mail PGP (Pretty Good Privacy) is easy to use as a standard protocol. Planning all activities exactly as well as following legal regulations are important requisites for reduction of safety risks in Internet. (orig.) [German] Ziele der Studie und Analyse: Es sollten die Fragen beantwortet werden, ob es moeglich ist, das Internet als sicheres Uebermittlungsmedium fuer Telemedizin zu nutzen und welche Sicherheitsrisiken bestehen. Dazu wurden die gaengigen Sicherheitsmethoden analysiert. Telemedizin im Internet ist mit Sicherheitsrisiken behaftet, die durch die Oeffnung eines Intranets mit der Moeglichkeit zur unberechtigten Manipulation von aussen bedingt sind. Schlussfolgerung: Diese Sicherheitsrisiken koennen durch eine Firewall weitgehend unterbunden werden. Chipkarten wie die Health professional card ermoeglichen eine hohe Sicherheit bei digitaler Signatur und sicherer Authentifikation der Sender und Empfaenger von Daten im Internet. Auch Standards wie Pretty good privacy sind inzwischen fuer sichere e-mails einfach einzusetzen. Wichtige Voraussetzung fuer die Reduktion von Sicherheitsrisiken ist unter Beruecksichtigung der gesetzlichen Vorgaben die exakte Planung aller Aktivitaeten im Internet, bei denen medizinische Patientendaten versandt werden sollen, in einem Team aus Aerzten und Informatikern. (orig.)

  3. Ion Mobility Spectrometer / Mass Spectrometer (IMS-MS)

    Energy Technology Data Exchange (ETDEWEB)

    Hunka, Deborah E. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Austin, Daniel [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2005-10-01

    The use of Ion Mobility Spectrometry (IMS)in the Detection of Contraband Sandia researchers use ion mobility spectrometers for trace chemical detection and analysis in a variety of projects and applications. Products developed in recent years based on IMS-technology include explosives detection personnel portals, the Material Area Access (MAA) checkpoint of the future, an explosives detection vehicle portal, hand-held detection systems such as the Hound and Hound II (all 6400), micro-IMS sensors (1700), ordnance detection (2500), and Fourier Transform IMS technology (8700). The emphasis to date has been on explosives detection, but the detection of chemical agents has also been pursued (8100 and 6400).

  4. [Bernt Ahrenholz : Verweise mit Demonstrativa im Gesprochenen Deutsch...] / Klaus Geyer

    Index Scriptorium Estoniae

    Geyer, Klaus

    2008-01-01

    Arvustus: Ahrenholz, Bernt. Verweise mit Demonstrativa im gesprochenen Deutsch : Grammatik, Zweitspracherwerb und Deutsch als Fremdsprache. Berlin ; New York : de Gruyter, 2007. (Linguistik - Impulse & Tendenzen ; 17)

  5. Kriminologie und Kriminalistik im Zugriff der Geschichtswissenschaft

    Directory of Open Access Journals (Sweden)

    Peter-Alexis Albrecht

    2007-01-01

    Full Text Available Rezensierte Werke:Silviana Galassi, Kriminologie im Deutschen Kaiserreich. Geschichte einer gebrochenen Verwissen­schaftlichung, Stuttgart: Franz Steiner Verlag 2004, 452 S., ISBN 3-515-08352-9; Peter Becker, Dem Täter auf der Spur. Eine Geschichte der Kriminalistik, Darmstadt: Primus Verlag 2005, 287 S., ISBN 3-89678-275-4; Peter Becker, Richard F. Wetzell (Hg., Criminals and their Scientists. The History of Criminology in International Perspective, Cambridge: Cambridge University Press 2006, 492 S., ISBN 0-521-81012-4

  6. Im Bild sprechen: Cixous Visual Instruction: Cixous

    OpenAIRE

    Jens E. Sennewald

    2006-01-01

    Gemeinsam von Künstlern und Wissenschaftlern/Philosophen erstellte Bücher sind selten und nicht immer erfolgreich. Eines der Fährnisse ist das Verhältnis zwischen bildlichen und schriftlichen Anteilen: Nicht selten wird der künstlerische Anteil zur Illustration der dominierenden Schrift. Eine Neupositionierung des Bildes im Buch ist nun der amerikanischen Künstlerin Roni Horn gelungen. Mehr als „sujet“ ihres Buches, ist die französische Philosophin Hélène Cixous gleichsam instruierende „Stimm...

  7. Corporate Venture Capital im Bankensektor: Eine Fallstudie

    OpenAIRE

    Maxin, Hannes

    2015-01-01

    Die Digitalisierung der Gesellschaft beeinflusst zunehmend das klassische Bankgeschäft, was durch die Erfolge vieler junger FinTech-Unternehmen verdeutlicht wird. Der damit verbundene Innovationsdruck führte dazu, dass die Commerzbank AG im Oktober 2013 die Main Incubator GmbH gründete. Mithilfe dieser Corporate Venture Capital-Gesellschaft (CVC-Gesellschaft) versucht die Frankfurter Großbank, eine Kooperation mit den neuen Wettbewerbern einzugehen, um mögliche Synergiepotenziale für das eige...

  8. Politische Inhalte im Internet: Angebot und Nachfrage politischer Inhalte im World Wide Web am Beispiel von Volksabstimmungen in der Schweiz

    OpenAIRE

    Rademacher, Patrick Horst Josef

    2010-01-01

    Welche Bedeutung kommt dem Internet in der Politikvermittlung zu? Dieser Frage geht Patrick Rademacher nach, indem er untersucht, welche Anbieter politische Inhalte im Internet zur Verfügung stellen, wie sie dabei vorgehen und wie die Struktur der Inhalte beschaffen ist. Darüber hinaus analysiert er, inwiefern die online angebotenen Inhalte auf eine Nachfrage durch die Bürger treffen. Im Untersuchungskontext von Volksabstimmungen in der Schweiz hat der Autor hierfür im Jahr 2008 umfangreiche ...

  9. Thermo-mechanical processing (TMP) of Ti-48Al-2Nb-2Cr based alloys

    International Nuclear Information System (INIS)

    Fuchs, G.E.

    1995-02-01

    The effects of heat treatment and deformation processing on the microstructures and properties of γ-TiAl based alloys produced by ingot metallurgy (I/M) and powder metallurgy (P/M) techniques were examined. The alloy selected for this work is the second generation γ-TiAl based alloy -- Ti-48Al-2Nb-2Cr (at %). Homogenization of I/M samples was performed at a variety of temperatures, followed by hot working by isothermal forging. P/M samples were prepared from gas atomized powders, consolidated by both HIP and extrusion and some of the HIPed material was then hot worked by isothermal forging. The effects of processing, heat treatment and hot working on the microstructures and properties will be discussed

  10. bildbild – visuelle Kompetenz im Unterricht

    Directory of Open Access Journals (Sweden)

    Norbert Grube

    2013-05-01

    Full Text Available Der vorliegende Artikel stellt das Webseiten-Projekt bildbild vor. Der Webseite liegt die Motivation zugrunde, Schülerinnen und Schüler für ein Nachdenken über globale Themen zu sensibilisieren. Ein solches Nachdenken ist immer auch eines über bildlich vermittelte Wirklichkeit. Es ist mit bildbild ein Anliegen, angesichts einer allseits konstatierten «Bilderflut» ein didaktisches Medium zu entwickeln, das einen Fundus an historischen und aktuellen Fotografien zur Verfügung stellt und diese so aufbereitet, dass sie gerade nicht hinter ihrer illustrativen Funktion verschwinden. Dadurch sollen die Bilder für ein selbständiges Lernen auf dem Weg hin zu einer visuellen Kompetenz einsetzbar gemacht werden. Der Beitrag beleuchtet die Entwicklung der Webseite vor dem Hintergrund kulturkritischer Haltungen zum Bild seit der Moderne sowie im Rahmen dessen, was seit den 1970er Jahren im pädagogischen Kontext als Visual Literacy diskutiert und gefördert wird. Dabei wird auch auf die medialen Potenziale einer Webseite für die Bildlesekompetenz von Jugendlichen eingegangen.

  11. Translating VDM to Alloy

    DEFF Research Database (Denmark)

    Lausdahl, Kenneth

    2013-01-01

    specifications. However, to take advantage of the automated analysis of Alloy, the model-oriented VDM specifications must be translated into a constraint-based Alloy specifications. We describe how a sub- set of VDM can be translated into Alloy and how assertions can be expressed in VDM and checked by the Alloy...

  12. Thermal Degradation Study of IM7/DMBZ-15 High Temperature Composite by TGA/FTIR

    National Research Council Canada - National Science Library

    Nadler, Melvin

    2003-01-01

    (U) High temperature graphite composites such as IM7/8552 epoxy, IM7/5250 BMI, and IM7/DMBZ-15 polyimide show blistering and/or "catastrophic" delamination when rapidly heated to temperatures above...

  13. The future of the IMS Learning Design specification: a critical look

    NARCIS (Netherlands)

    Sloep, Peter

    2009-01-01

    P. B. Sloep (2009). The future of the IMS Learning Design specification: a critical look. Presentation at the IMS Learning Design seminar 'The future of IMS Learning Design'. December, 10, 2009, Wollongong, Australia: University of Wollongong.

  14. Digitalisierung im Verteilnetz: Evolution oder Revolution anhand konkreter Beispiele

    Science.gov (United States)

    Krone, Oliver; Bachmann, Maurus

    Durch die Integration der neuen erneuerbaren Energien steht das Stromnetz vor großen Herausforderungen. Das Energiesystem als Gesamtes und die Verteilnetze im Speziellen werden smart. Anhand konkreter Beispiele wird aufgezeigt, wie die Digitalisierung im Elektrizitätsnetz voranschreitet. Diese Entwicklung ist eine Evolution, nicht aber eine Revolution.

  15. [Einheit und Vielfalt in der Rechtsgeschichte im Ostseeraum] / Marelle Leppik

    Index Scriptorium Estoniae

    Leppik, Marelle

    2013-01-01

    Arvustus: Einheit und Vielfalt in der Rechtsgeschichte im Ostseeraum. Unity and plurality in the legal history of the Baltic Sea area Sechster Rechtshistorikertag im Ostseeraum, 3.-5. Juni 2010 Tartu (Estland) / Riga (Lettland9. Hrsg. von Marju Luts-Sootak, Sanita Osipova und Frank L. Schäfer. (Rechtshistorische Reihe, Bd. 428.) Land. Frankfurt am Main u. a. 2012

  16. Information Management System (Ims) For Gender Mainstreaming In ...

    African Journals Online (AJOL)

    Information Management System (IMS) is an essential tool in supporting the provision of information needed for planning and decision making in any organization. Proper IMS facilitates the smooth flow of information both vertical and horizontal. This paper presents the findings of a survey on information needs of the Gender ...

  17. NASA-UVA Light Aerospace Alloy and Structures Technology Program (LA2ST)

    Science.gov (United States)

    Gangloff, Richard P.; Scully, John R.; Stoner, Glenn E.; Thornton, Earl A.; Wawner, Franklin E., Jr.; Wert, John A.

    1993-01-01

    The NASA-UVA Light Aerospace Alloy and Structures Technology (LA2ST) Program continues a high level of activity. Progress achieved between 1 Jan. and 30 Jun. 1993 is reported. The objective of the LA2ST Program is to conduct interdisciplinary graduate student research on the performance of next generation, light weight aerospace alloys, composites, and thermal gradient structures in collaboration with NASA-Langley researchers. The following projects are addressed: environmental fatigue of Al-Li-Cu alloys; mechanisms of localized corrosion and environmental fracture in Al-Cu-Li-Mg-Ag alloy X2095 and compositional variations; the effect of zinc additions on the precipitation and stress corrosion cracking behavior of alloy 8090; hydrogen interactions with Al-Li-Cu alloy 2090 and model alloys; metastable pitting of aluminum alloys; cryogenic fracture toughness of Al-Cu-Li + In alloys; the fracture toughness of Weldalite (TM); elevated temperature cracking of advanced I/M aluminum alloys; response of Ti-1100/SCS-6 composites to thermal exposure; superplastic forming of Weldalite (TM); research to incorporate environmental effects into fracture mechanics fatigue life prediction codes such as NASA FLAGRO; and thermoviscoplastic behavior.

  18. Analysis of zirconium and nickel based alloys and zirconium oxides by relative and internal monostandard neutron activation analysis methods

    International Nuclear Information System (INIS)

    Shinde, Amol D.; Acharya, Raghunath; Reddy, Annareddy V. R.

    2017-01-01

    The chemical characterization of metallic alloys and oxides is conventionally carried out by wet chemical analytical methods and/or instrumental methods. Instrumental neutron activation analysis (INAA) is capable of analyzing samples nondestructively. As a part of a chemical quality control exercise, Zircaloys 2 and 4, nimonic alloy, and zirconium oxide samples were analyzed by two INAA methods. The samples of alloys and oxides were also analyzed by inductively coupled plasma optical emission spectroscopy (ICP-OES) and direct current Arc OES methods, respectively, for quality assurance purposes. The samples are important in various fields including nuclear technology. Samples were neutron irradiated using nuclear reactors, and the radioactive assay was carried out using high-resolution gamma-ray spectrometry. Major to trace mass fractions were determined using both relative and internal monostandard (IM) NAA methods as well as OES methods. In the case of alloys, compositional analyses as well as concentrations of some trace elements were determined, whereas in the case of zirconium oxides, six trace elements were determined. For method validation, British Chemical Standard (BCS)-certified reference material 310/1 (a nimonic alloy) was analyzed using both relative INAA and IM-NAA methods. The results showed that IM-NAA and relative INAA methods can be used for nondestructive chemical quality control of alloys and oxide samples

  19. Analysis of zirconium and nickel based alloys and zirconium oxides by relative and internal monostandard neutron activation analysis methods

    Energy Technology Data Exchange (ETDEWEB)

    Shinde, Amol D.; Acharya, Raghunath; Reddy, Annareddy V. R. [Bhabha Atomic Research Centre, Mumbai (India)

    2017-04-15

    The chemical characterization of metallic alloys and oxides is conventionally carried out by wet chemical analytical methods and/or instrumental methods. Instrumental neutron activation analysis (INAA) is capable of analyzing samples nondestructively. As a part of a chemical quality control exercise, Zircaloys 2 and 4, nimonic alloy, and zirconium oxide samples were analyzed by two INAA methods. The samples of alloys and oxides were also analyzed by inductively coupled plasma optical emission spectroscopy (ICP-OES) and direct current Arc OES methods, respectively, for quality assurance purposes. The samples are important in various fields including nuclear technology. Samples were neutron irradiated using nuclear reactors, and the radioactive assay was carried out using high-resolution gamma-ray spectrometry. Major to trace mass fractions were determined using both relative and internal monostandard (IM) NAA methods as well as OES methods. In the case of alloys, compositional analyses as well as concentrations of some trace elements were determined, whereas in the case of zirconium oxides, six trace elements were determined. For method validation, British Chemical Standard (BCS)-certified reference material 310/1 (a nimonic alloy) was analyzed using both relative INAA and IM-NAA methods. The results showed that IM-NAA and relative INAA methods can be used for nondestructive chemical quality control of alloys and oxide samples.

  20. Support interoperability and reusability of emerging forms of assessment: Some issues on integrating IMS LD with IMS QTI

    NARCIS (Netherlands)

    Miao, Yongwu; Boon, Jo; Van der Klink, Marcel; Sloep, Peter; Koper, Rob

    2009-01-01

    Miao, Y., Boon, J., Van der Klink, M., Sloep, P. B., & Koper, R. (2011). Support interoperability and reusability of emerging forms of assessment: Some issues on integrating IMS LD with IMS QTI. In F. Lazarinis, S. Green, & E. Pearson (Eds.), E-Learning Standards and Interoperability: Frameworks

  1. Die Rule of Law im Völker- und im Europarecht – aktuelle Probleme

    Directory of Open Access Journals (Sweden)

    Helmut Tichy

    2015-04-01

    Full Text Available Diese am 5. März 2015 in Graz gehaltene Antrittsvorlesung eines Praxisprofessors, der im Hauptberuf Leiter des Völkerrechtsbüros im österreichischen Außenministerium ist, beschäftigt sich mit dem Begriff der Herrschaft des Rechts in den internationalen Beziehungen (Rule of Law und mit den Möglichkeiten Österreichs, zur Stärkung der Rule of Law und zur Lösung aktueller Probleme beizutragen. Dabei werden insbesondere die Mitwirkung an Kodifikationsbemühungen und an der Verbesserung der Einhaltung des humanitären Völkerrechts, die Umsetzung der Menschenrechte (auch in Österreich und Fragen der internationalen Gerichtsbarkeit angesprochen.

  2. Antarctic observations available for IMS correlative analyses

    International Nuclear Information System (INIS)

    Rycroft, M.J.

    1982-01-01

    A review is provided of the wide-ranging observational programs of 25 stations operating on and around the continent of Antarctica during the International Magnetospheric Study (IMS). Attention is given to observations of geomagnetism, short period fluctuations of the earth's electromagnetic field, observations of the ionosphere and of whistler mode signals, observational programs in ionospheric and magnetospheric physics, upper atmosphere physics observations, details of magnetospheric programs conducted at Kerguelen, H-component magnetograms, magnetic field line oscillations, dynamic spectra of whistlers, and the variation of plasmapause position derived from recorded whistlers. The considered studies suggest that, in principle, if the level of magnetic activity is known, predictions can be made concerning the time at which the trough occurs, and the shape and the movement of the main trough

  3. FUNKTIONSLOGIK TERRORISTISCHER PROPAGANDA IM BEWEGTEN BILD

    Directory of Open Access Journals (Sweden)

    Stefan Christoph

    2015-09-01

    Full Text Available Die Medienfront ist heute ein wichtiger Kriegsschauplatz, den viele neben Land, Wasser und Luft für gleich wichtig halten. Terroristen fühlen sich in sozialen Medien wohler als man denken könnte. Im Netz können sie die asymmetrische Kräfteverteilung überwinden, die sie in der offenen Feldschlacht unterlegen sein ließe. Terroristen machen sich das Bild zur Waffe und produzieren erst durch die Positionierung an der Medienfront Sinn in ihren Taten. Ohne ein Bekennerschreiben, ein Abschiedsvideo des Attentäters oder ein letztes Posting im sozialen Netzwerk wäre ein Bombenanschlag nichts als ein Kapitalverbrechen. Durch die terroristische Kommunikationsstrategie wird das Verbrechen erst zum terroristischen Akt. Das ist die theoretische Grundannahme dieses Aufsatzes. Ohne Medienberichterstattung könnten terroristische Organisationen nicht existieren. Durch die Entwicklung des Web 2.0 und insbesondere sozialer Medien kommen terroristische Organisationen heutzutage aber ganz ohne das Verschicken von Videotapes an Fernsehsender aus. Durch YouTube und andere Kanäle, können sie die Adressaten ihrer Botschaften direkt und ohne zwischengeschaltete Journalistinnen und Journalisten erreichen. So ist es nicht erstaunlich, dass terroristische Organisationen sich eine gewisse Expertise im Umgang mit sozialen Medien zugelegt haben. Al-Qaida hat seine eigene Medienabteilung, auch die kolumbianischen FARC arbeiten sehr professionell und welchen Einfluss der Islamische Staat im Internet ausübt ist inzwischen bereits Gegenstand einiger Reportagen und Untersuchungen geworden. Die diesem Aufsatz zugrundeliegende Arbeit hat sich mit neun verschiedenen Videos aus dem Umfeld von al-Qaida, der IRA und der FARC beschäftigt und versucht, aus dem analytischen Vergleich dieser Videos Rückschlüsse über terroristische Medienmacher und die terroristischen Organisationen selbst zu ziehen. Wie schnell und suggestiv die Videos arbeiten, ist etwa davon abh

  4. Die Pluralbildung im Deutschen - ein Versuch im Rahmen der Optimalitätstheorie

    Directory of Open Access Journals (Sweden)

    Wegener, Heide

    1999-01-01

    Full Text Available Die Pluralbildung im Deutschen ist nicht chaotisch, aber komplex. Unabhängig davon, ob man für die Pluralbildung Regeln, Schemata oder die Wortstruktur als Erklärungsmodell benutzt, bleibt die Tatsache einer beachtlichen Zahl miteinander konkurrierender Formen zu erklären. Dies gilt schon deshalb, weil die Variation unter den Pluralformen wohl mit dazu beiträgt, dass trotz der Arbeiten von Mugdan 1977 und Köpcke 1987, 1993, der klaren Darstellung des Pluralsystems in vielen Grammatiken, z.B. Eisenberg 1986, 1989, 1998 noch immer bisweilen die Meinung besteht, die Pluralbildung im Deutschen sei arbiträr.Es soll gezeigt werden, dass das Pluralsystem des Deutschen nach Beschränkungen aufgebaut ist, die morphologischer und silbenphonologischer Natur sind und sich im Rahmen der Optimalitätstheorie (OT beschreiben lassen. Die OT nimmt an, dass Wortformen universalen Beschränkungen (Constraints unterliegen, und dass diese prinzipiell verletzbar sind. Ich werde zunächst die für die Pluralbildung relevanten Beschränkungen definieren, dann an heimischen Pluralformen und -varianten ihr Zusammenwirken zeigen und schließlich den Assimilationsprozess von Fremdwörtern mit Hilfe dieser Beschränkungen und der Beschränkungshierarchien zu erklären versuchen. Daran werden schließlich Überlegungen zu Verarbeitung und Lernbarkeit der Pluralformen geknüpft.

  5. Steel alloys

    International Nuclear Information System (INIS)

    Bloom, E.E.; Stiegler, J.O.; Rowcliffe, A.F.; Leitnaker, J.M.

    1977-01-01

    The invention deals with a fuel element for fast breeder reactors. It consits essentially of a uranium oxide, nitride, or carbide or a mixture of these fuels with a plutonium or thorium oxide, nitride, or carbide. The fuel elements are coated with an austenitic stainless steel alloy. Inside the fuel elements, vacancies or small cavities are produced by neutron effects which causes the steel coating to swell. According to the invention, swelling is prevented by a modification of type 304, 316, 321, or 12 K 72HV commercial steels. They consist mainly of Fe, Cr, and Ni in a ratio determined by a temary diagram. They may also contain 1.8 to 2.3% by weight of Mo and a fraction of Si (0.7 to 2% by weight) and Ti(0.10 to 0.5% by weight) to prevent cavity formation. They are structurally modified by cold working. (IHOE) [de

  6. Implantate im Mittelohrbereich - Teil 2 (Ergänzungen 2007)

    Science.gov (United States)

    Stieve, M.; Lenarz, Thomas

    In Deutschland leben ca. 12 Millionen Menschen, die an einer ein- oder beidseitigen Schwerhörigkeit leiden. Diese kann angeboren oder im Laufe des Lebens erworben sein. Klinisch und therapeutisch wichtig ist die Unterscheidung hinsichtlich des Schädigungsortes im Bereich des Mittelohres, d. h. eine Schalleitungsschwerhörigkeit, oder im Bereich des Innenohres, d. h. eine Schallempfindungsschwerhörigkeit, wobei hier der Schädigungsort auch am Hörnerven oder in den zentralen Hörabschnitten liegen kann. Therapeutisch lassen sich sowohl Schwerhörigkeiten im Bereich des Mittelohres als auch im Innenohr und sogar im Hirnstammbereich (Hirnstammimplantat) behandeln. 1,9 Millionen Schwerhörige haben eine Erkrankung im Mittelohrbereich, d. h. der Schall kann nur ungenügend auf das Innenohr übertragen werden. Die Ursache besteht meist in einer chronischen Mittelohrentzündung, die zu einer Zerstörung des Trommelfells und der Gehörknöchelchenkette geführt haben. Therapeutisch und damit als Prinzip der operativen Hörverbesserung steht primär der Verschluß des Trommelfells oder eine Rekonstruktion der Gehörknöchelchen. Mittelohroperationen werden mikrochirurgisch unter dem Operationsmikroskop durchgeführt, wobei zunächst durch eine sanierende Operation der Entzündungsprozeß entfernt wird und nach einer Ausheilungszeit die Gehörknöchelchenkette durch künstliche Prothesen rekonstruiert werden kann.

  7. Medienerziehung im Vorschulbereich - Zum Projekt Mediengarten der Wiener Medienpädagogik

    Directory of Open Access Journals (Sweden)

    Gudrun Kern

    2010-09-01

    Full Text Available Im Zuge des Projekts Mediengarten der Wiener Medienpädagogik wurde in Kooperation mit angehenden KindergartenpädagogInnen eine Medienerziehung im Sinne einer Auseinandersetzung über Medien im Vorschulbereich anhand konkreter Angebote in Kindergärten konzipiert. Im folgenden Artikel werden die Schwerpunktsetzungen dieses Konzepts vorgestellt und durch praktische Beispiele verdeutlicht.

  8. Alloy Fabrication Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — At NETL’s Alloy Fabrication Facility in Albany, OR, researchers conduct DOE research projects to produce new alloys suited to a variety of applications, from gas...

  9. Controlled Thermal Expansion Alloys

    Data.gov (United States)

    National Aeronautics and Space Administration — There has always been a need for controlled thermal expansion alloys suitable for mounting optics and detectors in spacecraft applications.  These alloys help...

  10. A Management Tool for Improvement (Improving) IMS Stations Performance

    International Nuclear Information System (INIS)

    Mohammad, D.; Pantin, A.; Quintana, E.

    2011-01-01

    IMS-Maintenance is a software under development by the personnel of ARN-CTBT office, intended for the technical management of IMS stations under ARN's responsibility. This software integrates the whole control of the equipment in an IMS station, including the management of consumables used in daily or periodic operation. It permits an easy retrieval (access) of the technical features, suppliers, etc. of each item of the equipment, as well as its maintenance history and scheduled task. Although this project is still in a starting phase, a preliminary version of this software is being used in radionuclide station RN01 (Buenos Aires), having already demonstrated its usefulness and potential for the improvement of IMS station management. (authors)

  11. Implementing Adaptive Educational Methods with IMS Learning Design

    NARCIS (Netherlands)

    Specht, Marcus; Burgos, Daniel

    2006-01-01

    Please, cite this publication as: Specht, M. & Burgos, D. (2006). Implementing Adaptive Educational Methods with IMS Learning Design. Proceedings of Adaptive Hypermedia. June, Dublin, Ireland. Retrieved June 30th, 2006, from http://dspace.learningnetworks.org

  12. CopperCore, an Open Source IMS Learning Design Engine

    NARCIS (Netherlands)

    Vogten, Hubert

    2004-01-01

    The presentation gives an overview of the approach of the development programme of the OTEC department towards the development of Open Source. The CopperCore IMS Learning Design engine is described as an example of this approach.

  13. [Preussen und Livland im Zeichen der Reformation] / Anti Selart

    Index Scriptorium Estoniae

    Selart, Anti, 1973-

    2015-01-01

    Arvustus: Preussen und Livland im Zeichen der Reformation. Hrsg. von Arno Mentzel-Reuters und Klaus Neitmann. (Tagungsberichte der Historischen Kommission für ost- und westpreussische Landesforschung, 28). Fibre Verlag. Osnabrück 2014

  14. Quantensprung Digitalisierung - Energiewirtschaft im 21. Jahrhundert

    Science.gov (United States)

    Thyen, Elmar

    Die Energiewende wird ohne eine umfassende Digitalisierung der Energiewirtschaft Stückwerk bleiben. Die historisch gewachsene, aus hunderten fossilen Großkraftwerken getriebene Energieversorgung hat sich durch den Zubau von mehr als einer Millionen dezentraler Erzeugungseinheiten innerhalb der vergangenen 15 Jahren radikal verändert. Zum Ausgleich von Last und Erzeugung, aber auch zum Aufbau neuer Geschäftsfelder ist die digitale Technik unverzichtbar. Ihre Möglichkeiten scheinen nahezu unbegrenzt, ihre Rolle wird in einer zukünftig nahezu vollständig elektrifizierten Gesellschaft zunehmend wichtiger werden. Neue Anbieter drängen auf den Markt und setzen die traditionelle Energiewirtschaft unter Druck. Energieversorger, die sich dem Wandel nicht stellen, drohen den Anschluss zu verpassen. Noch werden Verbundunternehmen und Stadtwerke von weitreichenden regulatorischen Vorgaben geschützt. Beispiele aus anderen Branchen zeigen aber, dass die Digitalisierung im Stande ist, regulatorische Mechanismen außer Kraft zu setzen. Zugleich verhindert die enge Regulierung und ein falsch verstandener Datenschutzbegriff in Deutschland die Entwicklung neuer Geschäftsmodelle, die energie- und volkswirtschaftlich sinnvoll wären.

  15. Travestie im alten Ägypten

    Directory of Open Access Journals (Sweden)

    prof.Magda Abdalla

    2011-01-01

    Full Text Available Der Artikel möchte versuchen zu beweisen, dass den alten Ägyptern Travestie bekannt war. In verschiedenen Texten wie Märchen, Fabeln und Liebesgedichten auf Papyri und Ostraka, finden sich Belege von Travestie. Zuerst muss jedoch betont werden, dass es einen Unterschied zwischen dem Begriff der Travestie, mit anderen Worten der Verkleidung,[1] und dem der Metamorphose, dem Verwandeln der Gestalt,[2] gibt. [1] Tra.ve´stie: f. satirisch, Verspottung eines Literaturwerkes, bei der (im Unterschied zur Parodie der Inhalt beibehalten und die Form verändert wird (frz. travestie „Verkleidung“; zu lat. trans „hinüber“+vestire, „kleiden“. G. Wahrig,. Deutsches Wörterbuch, mit einem „Lexikon der deutschen Sprachlehre“( München, 1987, 1292. Es gibt auch eine moderne Definition des Begriffes Travestie aus dem 17. Jahrhundert. Hier beinhaltet diese ein Verfahren oder eine kritische Zielsetzung.w.Karrer.,Parodie Travestie, Pastiche (München, 1977, 19, 46. [2] Me.ta.mor´pho.se Umwandlung eines Gesteins in ein anderes; Wandlung des jungen Tieres durch verschiedene äußere Stadien; Verwandlung von Menschen in Tiere, Pflanzen, Quellen usw. (Deutsches Wörterbuch, 883. الإحصائيات

  16. Das Problem der Ethnogenese im antiken Griechenland

    Directory of Open Access Journals (Sweden)

    Welwei Karl-Wilhelm

    2011-01-01

    Full Text Available Sprachwissenschaftliche Untersuchungen lassen darauf schließen, dass die historischen Dialekte der alten Hellenen erst auf griechischem Boden um und nach 1000 v. Chr. entstanden sind. Bei den frühen Zuwanderern kann es sich nur um kleinere Verbände gehandelt haben, so daß zweifelllos keine großen „Stämme“ nach Griechenland vorgedrungen sind, wie man in der älteren Forschung angenommen hat. In Griechenland haben die Zuwanderer die Suffixe -ss und -nth oder -nd nicht erst kennengelernt, sondern zumindest zum Teil schon mitgebracht und vermutlich im 3. Jahrtausend v. Chr. die allmähliche Entwicklung des späteren Griechischen eingeleitet. Impulse für die Entwicklung der materiellen Kultur gingen um 1700 v. Chr. von Kreta aus und beeinflussten in starkem Maße die mykenische Zeit mit ihren Palastsystemen, deren Zusammenbruch um 1200 v. Chr. aber nicht schon zum Ende der mykenischen Kultur führte, wenn auch die Linear B-Schrift nicht mehr benutzt wurde und die Infrastrukturen der Machtzentren zusammenbrachen. Dies war zugleich die Voraussetzung für die Bildung kleinerer Siedlungen mit neuen Führungssystemen und Sozialstrukturen sowie mit einem jeweils eigenen Identitätsbewußtsein.

  17. Electronic structure of alloys

    International Nuclear Information System (INIS)

    Ehrenreich, H.; Schwartz, L.M.

    1976-01-01

    The description of electronic properties of binary substitutional alloys within the single particle approximation is reviewed. Emphasis is placed on a didactic exposition of the equilibrium properties of the transport and magnetic properties of such alloys. Topics covered include: multiple scattering theory; the single band alloy; formal extensions of the theory; the alloy potential; realistic model state densities; the s-d model; and the muffin tin model. 43 figures, 3 tables, 151 references

  18. CORPORATIVE MOTIVES ON IMPLEMENTATION OF INTEGRATED MANAGEMENT SYSTEM (IMS

    Directory of Open Access Journals (Sweden)

    Dragan Rajkovic

    2009-09-01

    Full Text Available Integration of management systems for quality, environment, health and risk management as well as corporative social responsibilities is workable corporative approach to reduce costs, effective use of resources, higher motivation of employees and better fulfillment of requirements of social engagements and stakeholders. This paper presents contents of literature and review of a company motives on integrated management system (IMS implementation, namely factors affecting the IMS implementation.

  19. Gruppenbezogene Menschenfeindlichkeit im Sport in Sachsen-Anhalt

    OpenAIRE

    Delto, Hannes; Tzschoppe, Petra

    2016-01-01

    Mit der Querschnittsstudie „Wir und die Anderen – Gruppenbezogene Menschenfeindlichkeit im organisierten Sport in Sachsen-Anhalt“ wurde das Syndrom Gruppenbezogener Menschenfeindlichkeit im organisierten Sport untersucht. Das Konzept der Gruppenbezogenen Menschenfeindlichkeit – ausgehend von einer Ideologie der Ungleichwertigkeit – wurde von Prof. Wilhelm Heitmeyer (Universität Bielefeld) entwickelt. Die Ergebnisse ermöglichen explizite Aussagen über Ausmaß und Ursachen Gruppenbezogener Mensc...

  20. Ein Ausblick auf Supply-Chain-Management im Jahr 2016

    DEFF Research Database (Denmark)

    Wieland, Andreas

    2016-01-01

    Wie sieht Supply-Chain-Management im Jahr 2016 aus? Was erwartet uns? Vieles deutet darauf hin, dass SCM in Zukunft sogar noch mehr auf den Kunden gerichtet sein könnte als bisher.......Wie sieht Supply-Chain-Management im Jahr 2016 aus? Was erwartet uns? Vieles deutet darauf hin, dass SCM in Zukunft sogar noch mehr auf den Kunden gerichtet sein könnte als bisher....

  1. Wir und die Anderen: Gruppenbezogene Menschenfeindlichkeit im Sport in Sachsen

    OpenAIRE

    Delto, Hannes; Tzschoppe, Petra

    2015-01-01

    Mit der Querschnittsstudie "Wir und die Anderen – Gruppenbezogene Menschenfeindlichkeit im organisierten Sport in Sachsen" wurde erstmals das Syndrom Gruppenbezogener Menschenfeindlichkeit im organisierten Sport untersucht. Das Konzept der Gruppenbezogenen Menschenfeindlichkeit – ausgehend von einer Ideologie der Ungleichwertigkeit – wurde von Prof. Wilhelm Heitmeyer (Universität Bielefeld) entwickelt. Die Ergebnisse ermöglichen explizite Aussagen über Ausmaß und Ursachen Gruppenbezogener Men...

  2. Eisengehalt von Fleisch - Ermittlung des Eisengehalts im Fleisch verschiedener Tierarten

    OpenAIRE

    Westphal, Karsten; Klose, Ralf; Golze, Manfred

    2009-01-01

    Der Bericht beinhaltet Ergebnisse von Fleischuntersuchungen auf den Eisengehalt. Untersucht wurden 308 Schweinefleischproben und etwa 300 Fleischproben der Tierarten Rind, Bison, Auerochse, Büffel, Schaf, Ziege, Kaninchen, Wildschwein, Rehwild, Rotwild und Fasan. Die sächsischen Ergebnisse bestätigen Untersuchungen anderer Bundesländer und belegen den starken Rückgang des Eisengehaltes im Schweinefleisch. Er lag im Mittel bei 4,1 mg/kg Frischmasse (FM). Vor 30 Jahren lag der Eisengehalt...

  3. Die Raumdarstellung im erzählenden Werk um 1900

    OpenAIRE

    Lu, Xiaoli

    2011-01-01

    In der Literatur existiert eine eigene Welt, die mit Raum und Zeit verbunden ist. Im 19. Jahrhundert gewinnen beide, Raum und Zeit, an Bedeutung als bewusst eingesetzte Gestaltungselemente. Es bilden sich zwei Grundrichtungen heraus, eine mit dem Erzählgeschehen verknüpfte Semantisierung in der Klassik und in der Romantik und eine betonte Fixierung des Geschehens in der realen Welt durch genaue Zeit- und Ortsangaben im Realismus. Die Semantisierung von Raum und Zeit führt zu einer Bedeutungss...

  4. ifo Konjunkturprognose 2015/2016: Deutsche Wirtschaft im Aufschwung

    OpenAIRE

    Wollmershäuser, Timo; Nierhaus, Wolfgang; Berg, Tim Oliver; Breuer, Christian; Garnitz, Johanna; Grimme, Christian; Henzel, Steffen; Hristov, Atanas; Hristov, Nikolay; Meister, Wolfgang; Schröter, Felix; Steiner, Andreas; Wieland, Elisabeth; Wohlrabe, Klaus; Wolf, Anna

    2015-01-01

    Die deutsche Wirtschaft befindet sich derzeit in einem kräftigen Aufschwung. Das reale Bruttoinlandsprodukt wird in diesem Jahr voraussichtlich um 1,9% expandieren und im kommenden Jahr um 1,8%. Der private Konsum bleibt die Stütze des Aufschwungs, da die Einkommensperspektiven der privaten Haushalte aufgrund der sich weiter verbessernden Arbeitsmarktlage gut sind. Allerdings entfallen allmählich die Kaufkraftgewinne durch den Ölpreisrückgang, so dass sich die Konsumdynamik im Prognosezeitrau...

  5. Coherent ambient infrasound recorded by the global IMS network

    Science.gov (United States)

    Matoza, R. S.; Landes, M.; Le Pichon, A.; Ceranna, L.; Brown, D.

    2011-12-01

    The International Monitoring System (IMS) includes a global network of infrasound arrays, which is designed to detect atmospheric nuclear explosions anywhere on the planet. The infrasound network also has potential application in detection of natural hazards such as large volcanic explosions and severe weather. Ambient noise recorded by the network includes incoherent wind noise and coherent infrasound. We present a statistical analysis of coherent infrasound recorded by the IMS network. We have applied broadband (0.01 to 5 Hz) array processing systematically to the multi-year IMS historical dataset (2005-present) using an implementation of the Progressive Multi-Channel Correlation (PMCC) algorithm in log-frequency space. We show that IMS arrays consistently record coherent ambient infrasound across the broad frequency range from 0.01 to 5 Hz when wind-noise levels permit. Multi-year averaging of PMCC detection bulletins emphasizes continuous signals such as oceanic microbaroms, as well as persistent transient signals such as repetitive volcanic, surf, or anthropogenic activity (e.g., mining or industrial activity). While many of these continuous or repetitive signals are of interest in their own right, they may dominate IMS array detection bulletins and obscure or complicate detection of specific signals of interest. The new PMCC detection bulletins have numerous further applications, including in volcano and microbarom studies, and in IMS data quality assessment.

  6. High strength alloys

    Science.gov (United States)

    Maziasz, Phillip James [Oak Ridge, TN; Shingledecker, John Paul [Knoxville, TN; Santella, Michael Leonard [Knoxville, TN; Schneibel, Joachim Hugo [Knoxville, TN; Sikka, Vinod Kumar [Oak Ridge, TN; Vinegar, Harold J [Bellaire, TX; John, Randy Carl [Houston, TX; Kim, Dong Sub [Sugar Land, TX

    2010-08-31

    High strength metal alloys are described herein. At least one composition of a metal alloy includes chromium, nickel, copper, manganese, silicon, niobium, tungsten and iron. System, methods, and heaters that include the high strength metal alloys are described herein. At least one heater system may include a canister at least partially made from material containing at least one of the metal alloys. At least one system for heating a subterranean formation may include a tubular that is at least partially made from a material containing at least one of the metal alloys.

  7. Grundlegende Steuerungsverfahren im heterogenen Logistiknetz mit Kanban

    Science.gov (United States)

    Dickmann, Eva; Dickmann, Philipp; Lödding, Hermann; Möller, Niklas; Rücker, Thomas; Schneider, Herfried M.; Zäh, Michael F.

    In vielen Unternehmen werden heterogene (verschiedene) Steuerungen in einem abgestimmten Konzept kombiniert. Je nach Anwendungsfall und Rahmenbedingungen werden Kombinationen allgemein bekannter Steuerungen oder Steuerungsvarianten gemischt eingesetzt, um eine optimale Steuerung für unterschiedliche Fälle zu erreichen. Hierbei stehen neben den bekannten und weit verbreiteten Methoden, wie Material Requirements Planning (MRP) oder Kanban, auch weniger bekannte oder neue Methoden zur Auswahl, wie die Produktionssteuerung mit dezentraler, bestandsorientierter Fertigungsregelung (DBF). Kanban ist ein simples und effizientes Steuerungskonzept, das in der klassischen Form für spezifische einfache Anwendungsfälle umsetzbar ist. Hochentwickelte Steuerungsalgorithmen können helfen, komplexe Abläufe optimal abzubilden. Mit einer grundlegenden Vereinfachung der Abläufe kann allerdings in vielen Fällen ein wesentlich stärkerer und umfassender Verbesserungseffekt erzielt werden. Die wesentliche Fragestellung sollte folglich lauten: Warum ist der Ablauf nicht mit einer einfachen Steuerung wie Kanban abzubilden? Um die Vorteile des Konzepts auch in untypischen Bereichen anwenden zu können, sind jedoch verschiedene Varianten oder Kanban-ähnliche Steuerungsmethoden entstanden. Darüber hinaus sind in der Praxis hybride Steuerungen im Einsatz, welche so kombiniert werden, dass die Zusammensetzung anspruchsvolle Eigenschaftsbilder noch exakt abbildet. In der Praxis basieren die Steuerungsentscheidungen nur zu einem kleinen Teil auf den eigentlichen Steuerungsalgorithmen, wie sie uns das MRP-System zur Verfügung stellt. Moderne Steuerungswelten" schließen alle relevanten Informationsquellen in eine heterogene Entscheidungsmatrix mit ein. Letztlich zählt nicht, ob die Entscheidung auf den Informationen aus dem MRP-System oder auf Softfacts basierend getroffen wurde, sondern nur, ob die Entscheidung erfolgreich war.

  8. Biocompatibility of dental alloys

    Energy Technology Data Exchange (ETDEWEB)

    Braemer, W. [Heraeus Kulzer GmbH and Co. KG, Hanau (Germany)

    2001-10-01

    Modern dental alloys have been used for 50 years to produce prosthetic dental restorations. Generally, the crowns and frames of a prosthesis are prepared in dental alloys, and then veneered by feldspar ceramics or composites. In use, the alloys are exposed to the corrosive influence of saliva and bacteria. Metallic dental materials can be classified as precious and non-precious alloys. Precious alloys consist of gold, platinum, and small amounts of non-precious components such as copper, tin, or zinc. The non-precious alloys are based on either nickel or cobalt, alloyed with chrome, molybdenum, manganese, etc. Titanium is used as Grade 2 quality for dental purposes. As well as the dental casting alloys, high purity electroplated gold (99.8 wt.-%) is used in dental technology. This review discusses the corrosion behavior of metallic dental materials with saliva in ''in vitro'' tests and the influence of alloy components on bacteria (Lactobacillus casei and Streptococcus mutans). The test results show that alloys with high gold content, cobalt-based alloys, titanium, and electroplated gold are suitable for use as dental materials. (orig.)

  9. A New IMS Based Inter-working Solution

    Science.gov (United States)

    Zhu, Zhongwen; Brunner, Richard

    With the evolution of third generation network, more and more multimedia services are developed and deployed. Any new service to be deployed in IMS network is required to inter-work with existing Internet communities or legacy terminal users in order to appreciate the end users, who are the main drivers for the service to succeed. The challenge for Inter-working between IMS (IP Multimedia Subsystem) and non-IMS network is “how to handle recipient’s address”. This is because each network has its own routable address schema. For instance, the address for Google Talk user is xmpp:xyz@google.com, which is un-routable in IMS network. Hereafter a new Inter-working (IW) solution between IMS and non-IMS network is proposed for multimedia services that include Instant Messaging, Chat, and File transfer, etc. It is an end-to-end solution built on IMS infrastructure. The Public Service Identity (PSI) defined in 3GPP standard (3rd Generation Partnership Project) is used to allow terminal clients to allocate this IW service. When sending the SIP (Session Initial Protocol) request out for multimedia services, the terminal includes the recipient’s address in the payload instead of the “Request-URI” header. In the network, the proposed solution provides the mapping rules between different networks in MM-IW (Multimedia IW). The detailed technical description and the corresponding use cases are present. The comparison with other alternatives is made. The benefits of the proposed solution are highlighted.

  10. Ion mobility spectrometer / mass spectrometer (IMS-MS).

    Energy Technology Data Exchange (ETDEWEB)

    Hunka Deborah Elaine; Austin, Daniel E.

    2005-07-01

    The use of Ion Mobility Spectrometry (IMS) in the Detection of Contraband Sandia researchers use ion mobility spectrometers for trace chemical detection and analysis in a variety of projects and applications. Products developed in recent years based on IMS-technology include explosives detection personnel portals, the Material Area Access (MAA) checkpoint of the future, an explosives detection vehicle portal, hand-held detection systems such as the Hound and Hound II (all 6400), micro-IMS sensors (1700), ordnance detection (2500), and Fourier Transform IMS technology (8700). The emphasis to date has been on explosives detection, but the detection of chemical agents has also been pursued (8100 and 6400). Combining Ion Mobility Spectrometry (IMS) with Mass Spectrometry (MS) is described. The IMS-MS combination overcomes several limitations present in simple IMS systems. Ion mobility alone is insufficient to identify an unknown chemical agent. Collision cross section, upon which mobility is based, is not sufficiently unique or predictable a priori to be able to make a confident peak assignment unless the compounds present are already identified. Molecular mass, on the other hand, is much more readily interpreted and related to compounds. For a given compound, the molecular mass can be determined using a pocket calculator (or in one's head) while a reasonable value of the cross-section might require hours of computation time. Thus a mass spectrum provides chemical specificity and identity not accessible in the mobility spectrum alone. In addition, several advanced mass spectrometric methods, such as tandem MS, have been extensively developed for the purpose of molecular identification. With an appropriate mass spectrometer connected to an ion mobility spectrometer, these advanced identification methods become available, providing greater characterization capability.

  11. Instrumentale Spielformeln und Vokale Verzierungen im 16.Jahrhundert

    Directory of Open Access Journals (Sweden)

    Göllner, Theodor

    2001-12-01

    Full Text Available In the music of the 16th century, stereotype four-note formulas are found in the instrumental as well as in the vocal idiom. Although frequently identical in appearance, their functions are very different. While indispensable in the instrumental idiom, particularly in keyboard music, where they represent the very essence of instruction in 15th-century organ treatises and fundamenta, they appear in vocal music only as additions to finished compositions or existing practices. What amounts to an absolute necessity in one case is merely an ornamental supplement in the other. In vocal music it is treated as a matter of performance carried out by a qualified soloist and limited to the musical centers of Italy. The present article raises the question as to how the genuinely instrumental and widely spread keyboard practice made its impact on the vocal ornaments of the singer, whose primary concern is the musical communication of language.

    [de] Die in der Musik des 16. Jahrhunderts im Instrumentalen wie im Vokalen vorkommenden, meist viertönigen, stereotypen Formeln sind zwar in beiden Bereichen weitgehend identisch, doch von höchst unterschiedlicher Funktion. Während sie im Instrumentalen, besonders in der Tastenmusik, unverzichtbar sind und schon im 15. Jahrhundert den Kern der Orgeltraktate und Fundamenta bilden, treten sie im Vokalen zu einer fertigen Komposition oder bestehenden Praxis hinzu. Was im einen Fall eine unbedingte Notwendigkeit ist, wird im anderen zu einem nachträglichen Ornament, das sich oft erst bei der Aufftührung einstellt, den qualifizierten Solosänger voraussetzt und auf die musikalischen Zentren Italiens konzentriert war. Der Artikel versucht zu klären, wie sich das genuin instrumentale, allgemein verbreitete Tastenspiel auf die spezielle Verzierungskunst des Sängers auswirkt, dessen primäre Aufgabe es ist, Sprache musikalisch zu vermitteln.

  12. Handover Based IMS Registration Scheme for Next Generation Mobile Networks

    Directory of Open Access Journals (Sweden)

    Shireen Tahira

    2017-01-01

    Full Text Available Next generation mobile networks aim to provide faster speed and more capacity along with energy efficiency to support video streaming and massive data sharing in social and communication networks. In these networks, user equipment has to register with IP Multimedia Subsystem (IMS which promises quality of service to the mobile users that frequently move across different access networks. After each handover caused due to mobility, IMS provides IPSec Security Association establishment and authentication phases. The main issue is that unnecessary reregistration after every handover results in latency and communication overhead. To tackle these issues, this paper presents a lightweight Fast IMS Mobility (FIM registration scheme that avoids unnecessary conventional registration phases such as security associations, authentication, and authorization. FIM maintains a flag to avoid deregistration and sends a subsequent message to provide necessary parameters to IMS servers after mobility. It also handles the change of IP address for user equipment and transferring the security associations from old to new servers. We have validated the performance of FIM by developing a testbed consisting of IMS servers and user equipment. The experimental results demonstrate the performance supremacy of FIM. It reduces media disruption time, number of messages, and packet loss up to 67%, 100%, and 61%, respectively, as compared to preliminaries.

  13. A SURVEY ON INDIAN EXPERIENCE ON INTEGRATED MANAGEMENT STANDARDS (IMS

    Directory of Open Access Journals (Sweden)

    H. Khanna

    2009-09-01

    Full Text Available Adoption of management systems standards is a key issue in manufacturing industry in India. Following the global trend quality and environmental issues are gaining importance. However the number of ISO 14001 certified companies are much less in India as compared to ISO 9001. The integration of ISO 14001 with ISO 9001 may help companies to sustain competitive advantage and overcome disappointments with quality standards and in turn encourage companies to adopt good environmental practices. The aim of this research is to study the implementation of integrated management standards (IMS by the manufacturing organizations in India. The different aspects of integration and benefits of IMS implementation are analyzed. This r esearch is based on empirical study carried out in Indian manufacturing firms, involving the application of a questionnaire. This questionnaire was tested on 50 manufacturing companies in India. The study reveals that focus on stakeholders; top management commitment and training are critical success factors for implementation of IMS. The main benefits of integration are discussed. The small sample size is one of the major limitations of this study. The paper informs the managers in manufacturing organizations and practitioners of management system standards especially in developing countries about IMS and will enable them to adopt IMS in future so that those organizations may not implement multiple and overlapping MSS(Management System Standards.

  14. Transplantate und Implantate im Mittelohrbereich - Teil 1 (Stand 2002)

    Science.gov (United States)

    Kempf, Hans-Georg; Lenarz, Thomas; Eckert, Karl-Ludwig

    In Deutschland leben ungefähr 12 Millionen Menschen, die an einer ein- oder beidseitigen Schwerhörigkeit leiden. Diese kann angeboren oder im Laufe des Lebens erworben sein. Klinisch und therapeutisch wichtig ist die Unterscheidung, ob die Ursache der Schwerhörigkeit im Bereich des Mittelohres, d. h. der Schallübertragung, oder im Bereich des Innenohres, der Hörnerven und der zentralen Hörbahnabschnitte, d. h. der Schallempfindung, liegt. 2,5 Millionen Schwerhörige haben dabei das Problem der Schallübertragung, d.h. die Störung liegt im Mittelohrbereich, und hier kann man in der Regel mit operativen, mikrochirurgisch durchgeführten Massnahmen helfen [1, 2]. Im Vordergrund steht als Ursache hier die chronische Mittelohrentzündung, die sich als Perforation des Trommelfells, als Defekt oder Unterbrechung der Gehörknöchelchen oder auch als Cholesteatom, einer sogenannte Knocheneiterung äussern kann [3]. Therapeutisch und damit als Prinzip der operativen Hörverbesserung steht primär der Verschluss des Trommelfells oder eine Rekonstruktion der Gehörknöchelchen an.

  15. Aggregation und Management von Metadaten im Kontext von Europeana

    Directory of Open Access Journals (Sweden)

    Gerda Koch

    2017-09-01

    Full Text Available Mit dem In-Beziehung-Setzen und Verlinken von Daten im Internet wird der Weg zur Umsetzung des semantischen Webs geebnet. Erst die semantische Verbindung von heterogenen Datenbeständen ermöglicht übergreifende Suchvorgänge und späteres „Machine Learning“. Im Artikel werden die Aktivitäten der Europäischen Digitalen Bibliothek im Bereich des Metadatenmanagements und der semantischen Verlinkung von Daten skizziert. Dabei wird einerseits ein kurzer Überblick zu aktuellen Forschungsschwerpunkten und Umsetzungsstrategien gegeben, und darüber hinaus werden einzelne Projekte und maßgeschneiderte Serviceangebote für naturhistorische Daten, regionale Kultureinrichtungen und Audiosammlungen beschrieben.

  16. Information management system study results. Volume 1: IMS study results

    Science.gov (United States)

    1971-01-01

    The information management system (IMS) special emphasis task was performed as an adjunct to the modular space station study, with the objective of providing extended depth of analysis and design in selected key areas of the information management system. Specific objectives included: (1) in-depth studies of IMS requirements and design approaches; (2) design and fabricate breadboard hardware for demonstration and verification of design concepts; (3) provide a technological base to identify potential design problems and influence long range planning (4) develop hardware and techniques to permit long duration, low cost, manned space operations; (5) support SR&T areas where techniques or equipment are considered inadequate; and (6) permit an overall understanding of the IMS as an integrated component of the space station.

  17. Environmental trace analysis by means of supersensitive GC-IMS

    International Nuclear Information System (INIS)

    Leonhardt, J.W.

    1997-01-01

    The effective control of pollutants in ambient air requires their fast in situ identification and concentration determination of chemical compounds in the range of micrograms per m 3 . There are attempts to use conventional analytical techniques as portable GC and GC-MS. These systems are relatively expensive. A new supersensitive ion Mobility Sensor (IMS) was developed and checked by IUT Ltd, which meets the new demands. The use of tritium sources is an advantage in comparison with other IMS being equipped by nickel-63, the application of which is rather critical in respect of the radiation protection. On the other hand an integrated separation column allows to reduce interferences by matrix effects. The technical parameters of the IUT GC- IMS and some of its most important applications are briefly presented

  18. Wozu und wie kooperative Arbeitsformen im studienbegleitenden Deutschunterricht?

    Directory of Open Access Journals (Sweden)

    Karmelka Barić

    2016-04-01

    Full Text Available Ausgehend von einer Reflexion über die im Beruf und im Leben notwendigen Kompetenzen in der Kommunikation sowie von der Überzeugung, dass es notwendig ist, diese Kompetenzen schon im Studium durch geeignete Arbeitsverfahren und Themen zu entwickeln, werden Kooperation und Autonomie fördernde Arbeitsformen für den studienbegleitenden Deutsch- und Fremdsprachenunterricht (SDU/SFU vorgestellt. Diese Arbeitsformen sind auf andere Sprachen übertragbar und aus dem Lehrwerk Mit Deutsch studieren arbeiten leben A2/B1 (Lévy-Hillerich, Serena, Barić & Cickovska 2010 und der dazu gehörenden Lernplattform entnommen. Das Lehrwerk selbst ist eine Umsetzung der SDU-Rahmencurricula, die im Laufe von über zwanzig Jahren in zehn Ländern im Rahmen eines 1994 am Goethe-Institut Warschau begonnenen Hochschulprojekts und der daraus entstandenen Forschungstätigkeit entstanden sind. Grundlage des Projekts ist ein ganzheitlicher soziopädagogischer Ansatz, der LernerInnen als Menschen betrachtet, die im Präsenz- oder im virtuellen Unterricht in der Sprache und durch die Sprache fach- und sprachübergreifende Kooperationsfähigkeiten entwickeln, die sich später im Leben in der Gesellschaft auswirken. Nach der Vorstellung des Projekts und seiner wissenschaftlichen Hintergründe im ersten Teil des Beitrags werden im zweiten Teil die sich aus dem Ansatz ergebenden Arbeitsformen untersucht: Dabei werden die sich dazu eignenden Themen, die Lernhilfen für StudentInnen, die den LehrerInnen zufallenden Rollen sowie die Ansprüche an Lehrbücher/Unterrichtsmaterialien und Online-/Blended-Learning-Lernszenarien besprochen. Der abschließende Überblick im dritten Teil über die Schwierigkeiten, die beim kooperativen Lernen im SDU/SFU auftreten können, ist gleichzeitig eine offenbleibende Frage danach, wie LehrerInnen aus- und fortgebildet werden sollten, um sich den Anforderungen einer sich dauernd verändernden Lernlandschaft stellen zu können.   The paper

  19. Environmental trace analysis by means of supersensitive GC-IMS

    Energy Technology Data Exchange (ETDEWEB)

    Leonhardt, J.W. [IUTLimited, Berlin, (Germany)

    1997-10-01

    The effective control of pollutants in ambient air requires their fast in situ identification and concentration determination of chemical compounds in the range of micrograms per m{sup 3}. There are attempts to use conventional analytical techniques as portable GC and GC-MS. These systems are relatively expensive. A new supersensitive ion Mobility Sensor (IMS) was developed and checked by IUT Ltd, which meets the new demands. The use of tritium sources is an advantage in comparison with other IMS being equipped by nickel-63, the application of which is rather critical in respect of the radiation protection. On the other hand an integrated separation column allows to reduce interferences by matrix effects. The technical parameters of the IUT GC- IMS and some of its most important applications are briefly presented 6 refs., 1 tab., 5 figs.

  20. Minería de imágenes

    OpenAIRE

    Fernández, Jacqueline; Miranda, Natalia Carolina; Guerrero, Roberto A.; Piccoli, María Fabiana

    2006-01-01

    Durante los últimos años, la proliferación de los medios digitales ha creado la necesidad del desarrollo de herramientas para la eficiente representación, acceso y recuperación de información visual. La minería de imágenes se ha convertido en una importante rama de investigación a causa del potencial que posee en descubrir patrones característicos a partir de un importante conjunto de imágenes. No obstante, la minería de imágenes es más que una simple extensión de la minería de datos al domin...

  1. Low activation ferritic alloys

    Science.gov (United States)

    Gelles, David S.; Ghoniem, Nasr M.; Powell, Roger W.

    1986-01-01

    Low activation ferritic alloys, specifically bainitic and martensitic stainless steels, are described for use in the production of structural components for nuclear fusion reactors. They are designed specifically to achieve low activation characteristics suitable for efficient waste disposal. The alloys essentially exclude molybdenum, nickel, nitrogen and niobium. Strength is achieved by substituting vanadium, tungsten, and/or tantalum in place of the usual molybdenum content in such alloys.

  2. PLUTONIUM-ZIRCONIUM ALLOYS

    Science.gov (United States)

    Schonfeld, F.W.; Waber, J.T.

    1960-08-30

    A series of nuclear reactor fuel alloys consisting of from about 5 to about 50 at.% zirconium (or higher zirconium alloys such as Zircaloy), balance plutonium, and having the structural composition of a plutonium are described. Zirconium is a satisfactory diluent because it alloys readily with plutonium and has desirable nuclear properties. Additional advantages are corrosion resistance, excellent fabrication propenties, an isotropie structure, and initial softness.

  3. Facebook Ethnography: The Poststructural Ontology of Transnational (Im Migration Research

    Directory of Open Access Journals (Sweden)

    David Joseph Piacenti PhD

    2014-02-01

    Full Text Available This theoretical article discusses the creative utility of Facebook as a new ethnographic tool in which to study transnational (im migration. Facebook ethnography allows the (im migration researcher to transcend the four structural dualities that constrain transnational ethnographic research: (a geographic constraints, (b travel funding constraints, (c travel time constraints, and (d the logistical constraints of entrée into new ethnographic contexts. Facebook ethnography also allows the qualitative researcher to temporarily transcend the ontological structuralist dualities of traditional research methods, producing a new poststructural epistemological and ontological methodology.

  4. IMS IN SMES - REASONS, ADVANTAGES AND BARRIERS ON IMPLEMENTATION

    Directory of Open Access Journals (Sweden)

    Dragan Rajković

    2008-09-01

    Full Text Available Appearance of a number of management systems with various and sometimes divergent demands, demands for revise of optimal strategy on implementation of these standards in small and medium-sized enterprises (SMEs and the attempt on their integration into integrated management system are suggested even more. Firstly question on choice and reasons for implementation of standards is raised. Management and employees expect benefits on the implementation and they pass and minimize the implementation barriers. Basic concept on integrated management system (IMS into SMEs and analyse on reasons, advantages and barriers at IMS implementation are presented in this paper.

  5. Reconocimiento de imágenes utilizando redes neuronales artificiales

    OpenAIRE

    García García, Pedro Pablo

    2013-01-01

    Este trabajo describe el proceso de extracción de patrones característicos de imágenes,mediante la ayuda de Redes Neuronales Artificiales. La información de la Red Neuronal junto con datos adicionales de las imágenes, serán almacenados en una base de datos y consumidos por un servicio web. Un teléfono móvil con sistema operativo Android consumirá la información almacenada en el servicio web. Posteriormente al realizar una captura de imagen con la cámara del teléfono, este procesará la imag...

  6. Frauen im Netz weltweit – ausgegrenzt und mittendrin

    Directory of Open Access Journals (Sweden)

    Sigrid Peuker

    2003-03-01

    Full Text Available Mit dem Global Center for Women’s Studies and Politics (GLOW ist das Feministische Institut der Heinrich-Böll-Stiftung 1998 online gegangen. Mit diesem Schritt wurden Fragen nach den Möglichkeiten und Grenzen sowie nach den Gestaltungsräumen virtueller Kommunikation für Frauen zentral. Mit feminist_spaces. Frauen im Netz. Diskurse – Communities – Visionen, legt die Heinrich-Böll-Stiftung zusammen mit dem Feministischen Institut Antworten aus internationaler Perspektive vor. Das Buch geht auf die gleichnamige zweitätige Konferenz in Berlin im November 2001 zurück.

  7. Hinderniserkennung und -verfolgung mit einer PMD-kamera im automobil

    Science.gov (United States)

    Schamm, Thomas; Vacek, Stefan; Natroshvilli, Koba; Marius Zöllner, J.; Dillmann, Rüdiger

    Die Detektion von Hindernissen vor dem Automobil ist eine Hauptanforderung an moderne Fahrerassistenzsysteme (FAS). In dieser Arbeit wird ein System vorgestellt, das mit Hilfe einer PMDKamera (Photomischdetektor) Hindernisse auf der Fahrspur erkennt und deren relevante Parameter bestimmt. Durch die PMD-Kamera werden zunächst 3D-Tiefenbilder der Fahrzeugumwelt generiert. Nach einem initialen Filterprozess werden im Tiefenbild mit Hilfe eines Bereichswachstumsverfahrens Hindernisse gesucht. Zur Stabilisierung des Verfahrens und zur Parameterberechnung wird ein Kaiman Filter eingesetzt. Das Ergebnis ist eine Liste aller Hindernisse im Fahrbereich des Automobils.

  8. Advances in titanium alloys

    International Nuclear Information System (INIS)

    Seagle, S.R.; Wood, J.R.

    1993-01-01

    As described above, new developments in the aerospace market are focusing on higher temperature alloys for jet engine components and higher strength/toughness alloys for airframe applications. Conventional alloys for engines have reached their maximum useful temperature of about 1000 F (540 C) because of oxidation resistance requirements. IMI 834 and Ti-1100 advanced alloys show some improvement, however, the major improvement appears to be in gamma titanium aluminides which could extend the maximum usage temperature to about 1500 F (815 C). This puts titanium alloys in a competitive position to replace nickel-base superalloys. Advanced airframe alloys such as Ti-6-22-22S, Beta C TM , Ti-15-333 and Ti-10-2-3 with higher strength than conventional Ti-6-4 are being utilized in significantly greater quantities, both in military and commercial applications. These alloys offer improved strength with little or no sacrifice in toughness and improved formability, in some cases. Advanced industrial alloys are being developed for improved corrosion resistance in more reducing and higher temperature environments such as those encountered in sour gas wells. Efforts are focused on small precious metal additions to optimize corrosion performance for specific applications at a modest increase in cost. As these applications develop, the usage of titanium alloys for industrial markets should steadily increase to approach that for aerospace applications. (orig.)

  9. Laser surface alloying of aluminium-transition metal alloys

    International Nuclear Information System (INIS)

    Almeida, A.; Vilar, R.

    1998-01-01

    Laser surface alloying has been used as a tool to produce hard and corrosion resistant Al-transition metal (TM) alloys. Cr and Mo are particularly interesting alloying elements to produce stable high-strength alloys because they present low diffusion coefficients and solid solubility in Al. To produce Al-TM surface alloys a two-step laser process was developed: firstly, the material is alloyed using low scanning speed and secondly, the microstructure is modified by a refinement step. This process was used in the production of Al-Cr, Al-Mo and Al-Mo and Al-Nb surface alloys by alloying Cr, Mo or Nb powder into an Al and 7175 Al alloy substrate using a CO 2 laser . This paper presents a review of the work that has been developed at Instituto Superior Tecnico on laser alloying of Al-TM alloy, over the last years. (Author) 16 refs

  10. Quality assurance when surface welding nickel-based alloys; Qualitaetssicherung bei der Auftragsschweissung von Nickelbasislackierungen

    Energy Technology Data Exchange (ETDEWEB)

    Metschke, J. [Muellkraftwerk Schwandorf Betriebsgesellschaft mbH (Germany)

    2003-07-01

    The cladding of evaporator heat exchanger surfaces in refuse incineration boilers with alloy 625 can effectively protect against the corrosive wear of the basic tube if the described rules concerning the pre-treatment, processing, quality control and after-care are observed. This statement is supported by the positive experience with this alloy at the Schwandorf refuse-fired power plant over a period of eight years now. Since the maximum service temperature is limited to 420 C, alloy 625 is only suitable for protecting superheater pipes subject to certain conditions. Long-term experience with alternative nickel-based alloys (alloy 622, alloy 686 and others) are not yet available. (orig.) [German] Die Schweissplattierung von Verdampferwaermetauscherflaechen in Muellverbrennungskesseln mit Alloy 625 kann einen wirksamen Schutz gegen den korrosiven Verschleiss des Grundrohres darstellen, wenn die vorstehenden Regeln ueber Vorbehandlung, Verarbeitung, Qualitaetskontrolle und laufende Nachsorgearbeiten beachtet werden. Diese Aussage wird durch die positiven Erfahrungen mit dieser Legierung im Muellkraftwerk Schwandorf ueber einen Zeitraum von nunmehr acht Jahren gestuetzt. (orig.)

  11. Im Wind / Mari Vallisoo ; tõlk. Gisbert Jänicke

    Index Scriptorium Estoniae

    Vallisoo, Mari, 1950-2013

    2003-01-01

    Sisu: Im Wind = Tuulega ; Zwei Frauen = Kaks naist ; In Gedanken an Aleksander Levin = aleksander Levinile mõteldes ; Jetzt im Dunkel = Nüüd pimedas ; Fragen = Küsimused ; Der Zwillingsbruder = Kaksikvend

  12. Regelungen im Verkehr mit Lebensmitteln und Bedarfsgegenständen in Deutschland

    Science.gov (United States)

    Thomas, Gundula; Freund, Astrid; Gründig, Friedrich

    Im Zuge der Globalisierung von Produktion und Handel ändert sich auch der Charakter der Vorschriften im Lebensmittelrecht. Zunehmend treten internationale Rechtsbestimmungen, Abkommen, Standards und andere Normen an die Stelle nationaler Regelungen.

  13. International Monitoring system (IMS) build-up in Africa: Current status and the way forward

    International Nuclear Information System (INIS)

    Basham, P.

    2002-01-01

    The complete IMS verification system for primary and auxiliary seismic together with that of radionuclide, hydroacoustic and infrasound is plotted on a global map and Africa in particular showing its status. IMS situation in East and Southern Africa is included

  14. Volatility study of [C1C1im][NTf2] and [C2C3im][NTf2] ionic liquids

    International Nuclear Information System (INIS)

    Rocha, Marisa A.A.; Ribeiro, Filipe M.S.; Schröder, Bernd; Coutinho, João A.P.; Santos, Luís M.N.B.F.

    2014-01-01

    Highlights: • Vapor pressures of [C 1 C 1 im][NTf 2 ] and [C 2 C 3 im][NTf 2 ] ionic liquids are reported. • [C 1 C 1 im][NTf 2 ] presents higher enthalpy and entropy of vaporization than expected. • The high volatility of [C 2 C 3 im][NTf 2 ] is a result from its asymmetric character. -- Abstract: Vapor pressures of 1,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide, ([C 1 C 1 im][NTf 2 ]) and 1-ethyl-3-propylimidazolium bis(trifluoromethylsulfonyl)imide, ([C 2 C 3 im][NTf 2 ]) ionic liquids were measured as a function of temperature using a Knudsen effusion apparatus combined with a quartz crystal microbalance. Enthalpies and entropies of vaporization were derived from the fitting of vapor pressure and temperature results to the Clarke and Glew equation. [C 1 C 1 im][NTf 2 ] presents a higher enthalpy and entropy of vaporization than the neighboring members of the series. The enthalpy of vaporization of [C 2 C 3 im][NTf 2 ] lies in between the asymmetric and symmetric ionic liquid series, reflecting a decrease in the electrostatic interactions due to a decrease of the charge accessibility between the ionic pairs when the methyl group is replaced by an ethyl group. The obtained higher volatility of [C 2 C 3 im][NTf 2 ] arises from its asymmetric character, leading to an higher entropic contribution that compensates the enthalpic penalty. The border conditions ([C 1 C 1 im][NTf 2 ], [C 2 C 1 im][NTf 2 ] and [C 2 C 2 im][NTf 2 ]), topology ([C 2 C 3 im][NTf 2 ]) and symmetry/asymmetry of the ILs effect were evaluated and rationalized based on a comparative analysis of the thermodynamic properties, enthalpies and entropies of vaporization

  15. Mapping IMS Learning Design and Moodle. A first understanding

    NARCIS (Netherlands)

    Burgos, Daniel; Tattersall, Colin; Dougiamas, Martin; Vogten, Hubert; Koper, Rob

    2006-01-01

    Please, cite this publication as follows: Burgos, D., Tattersall, C., Dougiamas, M., Vogten, H., & Koper, E. J. R. (2006). Mapping IMS Learning Design and Moodle. A first understanding. Proceedings of Simposo Internacional de Informática Educativa (SIIE06), León, Spain: IEEE Technical Committee on

  16. Collaborative Research: Calibration for IMS Stations in Eastern Asia

    Science.gov (United States)

    2007-07-01

    Atomnaya Energia , Vol.87, Issue 3, 1989 (in Russian). 142 BondAr, I. Combining 1-D models for regional calibration, in Proceedings of a Workshop on IMS...Zelentsov and V.N. Mikhailov, Characteristics of 96 underground nuclear explosions at the Semipalatinsk Test Site, Atomaya Energia , (in Russian), Vol. 67

  17. EFEKTIVITAS MEDIA PEMBELAJARAN IM3 DITINJAU DARI MOTIVASI BELAJAR

    Directory of Open Access Journals (Sweden)

    J. Handhika

    2012-10-01

    Full Text Available Penelitian ini bertujuan untuk mengetahui perbedaan penggunaan media pembelajaran IM3 berbasis flash dan media MS. Power Point terhadap prestasi belajar IPA-Fisika. Hasil penelitian  menunjukkan bahwa siswa yang diajar menggunakan media IM3 berbasis flash memberikan rata-rata prestasi lebih baik dibandingkan dengan siswa yang diajar menggunakan power point. Siswa dengan motivasi belajar tinggi menghasilkan rata-rata prestasi lebih baik daripada siswa dengan motivasi belajar rendah, serta terdapat interaksi motivasi belajar dengan media pembelajaran terhadap prestasi belajar IPA-Fisika.   This study aims to determine differences in the use of flash-based IM3 learning media and MS media. Power Point to IPA-Physics learning achievement. Results showed that students who were taught using flash-based media IM3 gives an average performance better than students who were taught using the power point. Students with high motivation to learn the average yield better performance than students with low learning motivation, and there is interaction with the medium of learning motivation toward science learning achievement-Physics.

  18. Address Translation Problems in IMS Based Next Generation Networks

    Directory of Open Access Journals (Sweden)

    Balazs Godor

    2006-01-01

    Full Text Available The development of packed based multimedia networks reached a turning point when the ITU-T and the ETSIhave incorporated the IMS to the NGN. With the fast development of mobile communication more and more services andcontent are available. In contrast with fix network telephony both the services and the devices are personalized in the “mobileworld”. Services, known from the Internet - like e-mail, chat, browsing, presence, etc. – are already available via mobiledevices as well. The IMS originally wanted to exploit both the benefits of mobile networks and the fancy services of theInternet. But today it is already more than that. IMS is the core of the next generation telecommunication networks and abasis for fix-mobile convergent services. The fact however that IMS was originally a “mobile” standard, where IPv6 was notoddity generated some problems for the fix networks, where IPv4 is used. In this article I give an overview of these problemsand mention some solutions as well.

  19. I'm Positive: Growing Up with Self-Esteem.

    Science.gov (United States)

    Kansas State Univ., Manhattan. Cooperative Extension Service.

    This document presents "I'm Positive: Growing Up With Self-Esteem," an informal, personal study course designed to strengthen the reader's ability to nurture self-esteem in children from birth through adolescence. Special emphasis is given to four parenting skills: acceptance, encouragement, empowerment, and love. Weekly activities are provided…

  20. Sixteenth Meeting of the IMS Study Group "Cantus Planus"

    Czech Academy of Sciences Publication Activity Database

    Vozková, Jana

    2011-01-01

    Roč. 48, 2-3 (2011), s. 310-311 ISSN 0018-7003. [Sixteenth Meeting of the IMS Study Group “Cantus Planus”. Vídeň, 21.08.2011–27.08.2011] Institutional research plan: CEZ:AV0Z90580513 Keywords : plainchant * annual conference * International Musicological Society Subject RIV: AL - Art, Architecture, Cultural Heritage

  1. Ausländische Direktinvestitionen und Technologietransfer im angolanischen Energiesektor

    Directory of Open Access Journals (Sweden)

    2016-04-01

    Full Text Available Dem Zusammenhang von ausländischen Direktinvestionen (Foreign Direct Investment, FDI und Technologietransfer wird sowohl in der Forschung als auch in der politischen Analyse große Bedeutung zugeschrieben. Zahlreiche Veröffentlichungen belegen, dass FDI den Transfer von und/oder den Zugang zu Technologien erleichtert. Allerdings gibt es zu wenige empirische Studien, die diesen Zusammenhang in Bezug auf die Wirtschaft afrikanischer Staaten untersuchen. Der Autor will diese Lücke zu einem kleinen Teil schließen, indem er die Bedeutung des Technologietransfers durch den Zufluss von FDI im Energiesektor Angolas ermittelt. Seine Analyse basiert auf qualitativer Forschung in Angola im Jahr 2014. Er zeigt auf, dass sich die Erzeugung von Energie(trägern und die Verteilungsinfrastruktur - maschinelle Ausrüstung und Qualifizierung - durch den Zufluss von FDI erheblich entwickeln konnte. Allerdings gebe es keinen Beleg dafür, dass dieser Zufluss die endogenen wissenschaftlichen und technologischen Forschungspotenziale im angolanischen Energiesektor gefördert hat. Der Autor empfiehlt politische Maßnahmen zur Förderung dieser Fähigkeiten, insbesondere im Bereich der Produktion.

  2. First inter metatarsal (IM) angles in Nigerians and their relationship ...

    African Journals Online (AJOL)

    Background: No age is immune to the deformity known as Hallux valgus as it has been proven that 50% of adults developed it during adolescence, while 40% of juveniles developed it before the age of 10.5 years. Aim: To determine from radiographs the normal value of the first inter metatarsal (IM) angle and to establish if ...

  3. Using IMS Learning Design to model collaborative learning activities

    NARCIS (Netherlands)

    Tattersall, Colin

    2006-01-01

    IMS Learning Design provides a counter to the trend towards designing for lone-learners reading from screens. It guides staff and educational developers to start not with content, but with learning activities and the achievement of learning objectives. It recognises that learning can happen without

  4. MATTHEW'S SITZ IM LEBEN AND THE EMPHASIS ON THE TORAH

    African Journals Online (AJOL)

    Acta Theologica ... such as would be expected from letters (Bauckham 1998:48). Yet the ... it in other words; the Sitz im Leben der alten Kirche can indirectly be .... 4 Along with most scholars I assume that Matthew was written some time after.

  5. Distance tracking scheme for seamless handover in IMS-based ...

    African Journals Online (AJOL)

    This paper proposes a fast and seamless handover scheme for systems based on IP Multimedia Subsystem (IMS) architectural framework with Universal Mobile Telecommunications System (UMTS) access network. In the scheme the location, direction and movement pattern of a Mobile Node (MN) in a network cell are ...

  6. High temperature niobium alloys

    International Nuclear Information System (INIS)

    Wojcik, C.C.

    1991-01-01

    Niobium alloys are currently being used in various high temperature applications such as rocket propulsion, turbine engines and lighting systems. This paper presents an overview of the various commercial niobium alloys, including basic manufacturing processes, properties and applications. Current activities for new applications include powder metallurgy, coating development and fabrication of advanced porous structures for lithium cooled heat pipes

  7. Shape memory alloys

    International Nuclear Information System (INIS)

    Kaszuwara, W.

    2004-01-01

    Shape memory alloys (SMA), when deformed, have the ability of returning, in certain circumstances, to their initial shape. Deformations related to this phenomenon are for polycrystals 1-8% and up to 15% for monocrystals. The deformation energy is in the range of 10 6 - 10 7 J/m 3 . The deformation is caused by martensitic transformation in the material. Shape memory alloys exhibit one directional or two directional shape memory effect as well as pseudoelastic effect. Shape change is activated by temperature change, which limits working frequency of SMA to 10 2 Hz. Other group of alloys exhibit magnetic shape memory effect. In these alloys martensitic transformation is triggered by magnetic field, thus their working frequency can be higher. Composites containing shape memory alloys can also be used as shape memory materials (applied in vibration damping devices). Another group of composite materials is called heterostructures, in which SMA alloys are incorporated in a form of thin layers The heterostructures can be used as microactuators in microelectromechanical systems (MEMS). Basic SMA comprise: Ni-Ti, Cu (Cu-Zn,Cu-Al, Cu-Sn) and Fe (Fe-Mn, Fe-Cr-Ni) alloys. Shape memory alloys find applications in such areas: automatics, safety and medical devices and many domestic appliances. Currently the most important appears to be research on magnetic shape memory materials and high temperature SMA. Vital from application point of view are composite materials especially those containing several intelligent materials. (author)

  8. Thermofluency in zirconium alloys

    International Nuclear Information System (INIS)

    Orozco M, E.A.

    1976-01-01

    A summary is presented about the theoretical and experimental results obtained at present in thermofluency under radiation in zirconium alloys. The phenomenon of thermofluency is presented in a general form, underlining the thermofluency at high temperature because this phenomenon is similar to the thermofluency under radiation, which ocurrs in zirconium alloys into the operating reactor. (author)

  9. Ductile transplutonium metal alloys

    Science.gov (United States)

    Conner, William V.

    1983-01-01

    Alloys of Ce with transplutonium metals such as Am, Cm, Bk and Cf have properties making them highly suitable as sources of the transplutonium element, e.g., for use in radiation detector technology or as radiation sources. The alloys are ductile, homogeneous, easy to prepare and have a fairly high density.

  10. Choosing the Right Free IM Providers and Clients for Your Library

    Science.gov (United States)

    Izenstark, Amanda K.

    2009-01-01

    With virtual library services increasing, public services librarians may find themselves with questions such as: What instant messaging services (IM) are available? Which IM service would best suit my patrons' needs? Which IM service best suits my library's technology profile? This column describes the features and functionality of major instant…

  11. Ultrahigh temperature intermetallic alloys

    Energy Technology Data Exchange (ETDEWEB)

    Brady, M.P.; Zhu, J.H.; Liu, C.T.; Tortorelli, P.F.; Wright, J.L.; Carmichael, C.A.; Walker, L.R. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

    1997-12-01

    A new family of Cr-Cr{sub 2}X based alloys with fabricability, mechanical properties, and oxidation resistance superior to previously developed Cr-Cr{sub 2}Nb and Cr-Cr{sub 2}Zr based alloys has been identified. The new alloys can be arc-melted/cast without cracking, and exhibit excellent room temperature and high-temperature tensile strengths. Preliminary evaluation of oxidation behavior at 1100 C in air indicates that the new Cr-Cr{sub 2}X based alloys form an adherent chromia-based scale. Under similar conditions, Cr-Cr{sub 2}Nb and Cr-Cr{sub 2}Zr based alloys suffer from extensive scale spallation.

  12. Neutron-absorbing alloys

    International Nuclear Information System (INIS)

    Portnoi, K.I.; Arabei, L.B.; Gryaznov, G.M.; Levi, L.I.; Lunin, G.L.; Kozhukhov, V.M.; Markov, J.M.; Fedotov, M.E.

    1975-01-01

    A process is described for the production of an alloy consiting of 1 to 20% In, 0.5 to 15% Sm, and from 3 to 18% Hf, the balance being Ni. Such alloys show a good absorption capacity for thermal and intermediate neutrons, good neutron capture efficiency, and good corrosion resistance, and find application in nuclear reactor automatic control and safety systems. The Hf provides for the maintenance of a reasonably high order of neutron capture efficiency throughout the lifetime of a reactor. The alloys are formed in a vacuum furnace operating with an inert gas atmosphere at 280 to 300 mm.Hg. They have a corrosion resistance from 3 to 3.5 times that of the Ag-based alloys commonly employed, and a neutron capture efficiency about twice that of the Ag alloys. Castability and structural strength are good. (U.K.)

  13. The use of titanium alloys for dynamic risers: a literature review

    Energy Technology Data Exchange (ETDEWEB)

    Torster, F.; Kocak, M.; Santos, J.F. dos [GKSS-Forschungszentrum Geesthacht GmbH (Germany). Inst. fuer Werkstofforschung; Hutt, G. [Stolt Comex Seaway Ltd., Aberdeen, (Scotland)

    1997-12-31

    The main topic of this short literature review is to describe the material related aspects concerning the production and purpose of flexible titanium risers for offshore oil and gas production. Metallurgy and alloying of titanium are briefly introduced. The review concentrates on the materials properties that are relevant for the intended use in marine environment. The focus is put on {alpha}+{beta} Ti-alloys, because earlier investigations have shown that this alloy family is the most suitable one for this purpose. Further topics which are taken into account are welding processes for titanium, weld properties and aspects of the associated weld defects as well. This literature review has been carried out at GKSS-Forschungszentrum Geesthacht GmbH within the framework of the project `Titanium Risers for Deepwater Developments (contract nr. OG/175/95), supported by the THERMIE-JOULE Programme of the European Commission. The project consortium is formed by Stolt Comex Seaway Ltd. (UK), Seaflex AS (Norway) and GKSS (Germany). (orig.) [Deutsch] Die vorliegende kurze Literaturrecherche befasst sich vorrangig mit den materialbezogenen Aspekten der Produktion und des Einsatzes von flexiblen `Risern` aus Titanlegierungen fuer die Oel- und Gasfoerderung auf See. Die Metallurgie und das Legieren von Titan werden kurz vorgestellt. Die Recherche konzentriert sich im weiteren auf die Materialeigenschaften, die fuer den vorgesehenen Einsatz in mariner Umgebung von besonderer Bedeutung sind. In erster Linie wird dabei auf {alpha}+{beta}-Titanlegierungen eingegangen, da vorausgegangene Untersuchungen gezeigt haben, dass diese Legierungsfamilie die guenstigsten Eigenschaften fuer das vorgesehene Einsatzgebiet aufweist. Im weiteren werden die Schweissprozesse, die bei Titanlegierungen eingesetzt werden, vorgestellt und die Eigenschaften und moeglichen Schweissfehler der hergestellten Schweissverbindungen gegenuebergestellt. Diese Literaturrecherche wurde im GKSS-Forschungszentrum im

  14. Alloying principles for magnesium base heat resisting alloys

    International Nuclear Information System (INIS)

    Drits, M.E.; Rokhlin, L.L.; Oreshkina, A.A.; Nikitina, N.I.

    1982-01-01

    Some binary systems of magnesium-base alloys in which solid solutions are formed, are considered for prospecting heat resistant alloys. It is shown that elements having essential solubility in solid magnesium strongly decreasing with temperature should be used for alloying maqnesium base alloys with high strength properties at increased temperatures. The strengthening phases in these alloys should comprise essential quantity of magnesium and be rather refractory

  15. Physical metallurgy of titanium alloys

    International Nuclear Information System (INIS)

    Collings, E.W.

    1988-01-01

    Researches in electric, magnetic, thermophysical properties of titanium alloys in the wide range of temperatures (from helium upto elevated one), as well as stability of phases in alloys of different types are generalized. Fundamental description of physical properties of binary model alloys is given. Acoustic emission, shape memory and Bauschinger effects, pseudoelasticity, aging and other aspects of physical metallurgy of titanium alloys are considered

  16. Pengaruh Intensitas Mengakses Twitter Duta Im3 terhadap Kepuasan Pengalaman Adopsi dan Kepuasan Pengalaman Adopsi terhadap Keputusan Penggunaan Program Im3

    OpenAIRE

    Ayu Kinasih, Diyan Hafdinovianti; Pradekso, Tandiyo; Setiabudi, Djoko

    2014-01-01

    Nama : Diyan H Ayu KinasihNIM : D2C009029Judul : Pengaruh Intensitas Mengakses Twitter Duta IM3 terhadapKepuasan Pengalaman Adopsi dan Kepuasan PengalamanAdopsi terhadap Keputusan Penggunaan Program IM3ABSTRAKTwitter sebagai salah satu promotion tools yang digunakan oleh PTIndosat Tbk, diharapkan dapat memperkenalkan program-program serta eventyang dilakukan oleh Indosat. Melalui duta IM3 sebagai brand ambassador, Indosatmencoba meraih pasar anak muda dengan melakukan kegiatan promosi.Tipe pe...

  17. Influence of S, P, C on grain boundary diffusion and creep properties of Alloy 800; Einfluss von S, P, C auf die Korngrenzendiffusion und Kriecheigenschaften von Alloy 800

    Energy Technology Data Exchange (ETDEWEB)

    Lindemann, J.; Hannesen, K.; Mast, R.; Viefhaus, H. [Max-Planck-Institut fuer Eisenforschung GmbH, Duesseldorf (Germany); Grabke, H.J.

    1998-12-31

    The paper reports examinations of Alloy 800 and specific commercially available variants known under the names of 800H, 800HT, and 800LC, differing in their concentrations of C, Al, and Ti. In addition, melts also containing phosphorus (0.09 wt-%) or sulfur (0.04 wt-%) as additional alloying materials have been prepared for the experiments. The volume diffusion and the grain boundary diffusion of {sup 59}Fe in those alloys was measured at temperatures between 800 and 1000 C by means of a radioactive tracer method combined with residual activity measurements. It was found that accompanying elements like phosphorus and sulfur increase the activation energy of the grain boundary diffusion of the iron and thus delay the grain boundary self-diffusion in Alloy 800. Creep curves were measured of the same materials after age-hardening treatment for 100 hours at 800 C, measurements performed at constant temperature but at three different, constant creep stress loads. The results showed that addition of phosphorus markedly increases the lifetime of Alloy 800, and reduces the creep rupture strain. The minimum strain rate in Alloy 800 containing 0.09 wt-% of phosphorus was found to be lower by a factor of 100, as compared to the other Alloy 800 materials used. (orig./CB) [Deutsch] Alloy 800 ist ein austenitischer Fe-Ni-Cr Stahl, der relativ geringe, aber wichtige Konzentrationen von Kohlenstoff, Aluminium und Titan enthaelt. Besondere Varianten von Alloy 800, bekannt als 800H, 800HT und 800LC, unterscheiden sich in den Konzentrationen dieser Elemente. Diese kommerziellen Legierungen wurden untersucht, und zusaetzlich wurden Schmelzen mit zulegiertem Phosphor (0,09 Gew-%) bzw. Schwefel (0,04 Gew-%) hergestellt. Mittels einer radioaktiven Tracermethode in Verbindung mit Restaktivitaetsmessungen wurde die Volumen- und Korngrenzendiffusion von {sup 59}Fe in diesen Legierungen im Temperaturbereich 800-1000 C gemessen. Es wurde gefunden, dass Begleitelemente wie Phosphor und

  18. Multi-step wrought processing of TiAl-based alloys

    International Nuclear Information System (INIS)

    Fuchs, G.E.

    1997-04-01

    Wrought processing will likely be needed for fabrication of a variety of TiAl-based alloy structural components. Laboratory and development work has usually relied on one-step forging to produce test material. Attempts to scale-up TiAl-based alloy processing has indicated that multi-step wrought processing is necessary. The purpose of this study was to examine potential multi-step processing routes, such as two-step isothermal forging and extrusion + isothermal forging. The effects of processing (I/M versus P/M), intermediate recrystallization heat treatments and processing route on the tensile and creep properties of Ti-48Al-2Nb-2Cr alloys were examined. The results of the testing were then compared to samples from the same heats of materials processed by one-step routes. Finally, by evaluating the effect of processing on microstructure and properties, optimized and potentially lower cost processing routes could be identified

  19. Usability test of the ImPRO, computer-based procedure system

    International Nuclear Information System (INIS)

    Jung, Y.; Lee, J.

    2006-01-01

    ImPRO is a computer based procedure in both flowchart and success logic tree. It is evaluated on the basis of computer based procedure guidelines. It satisfies most requirements such as presentations and functionalities. Besides, SGTR has been performed with ImPRO to evaluate reading comprehension and situation awareness. ImPRO is a software engine which can interpret procedure script language, so that ImPRO is reliable by nature and verified with formal method. One bug, however, had hidden one year after release, but it was fixed. Finally backup paper procedures can be prepared on the same format as VDU in case of ImPRO failure. (authors)

  20. Technetium and technetium alloys

    International Nuclear Information System (INIS)

    Ijdo, W.L.

    1993-10-01

    This report presents the results of a literature survey on technetium and technetium alloys. The literature has been searched through 1993. The survey was focused on technetium and (binary cubic) technetium alloys, but other important information on technetium has not been omitted from this survey. This report has been written with the aim to collect more information about phase systems which could be of importance in the transmutation process by neutrons of technetium. With the information presented in this report, it should be possible to select a suitable technetium alloy for further investigation regarding to the transmutation process. (orig.)

  1. Estudios por imágenes en reumatismo

    Directory of Open Access Journals (Sweden)

    Muñoz Ch. Sara, Dra.

    2012-07-01

    Los grandes avances tecnológicos de la última década han mejorado la calidad y cantidad de información que las distintas técnicas aportan, especialmente la RM; esto hace vislumbrar un cambio significativo en el diagnóstico por imágenes, ya que en el futuro no solo estará basado en los cambios morfológicos en órganos y tejidos; las imágenes obtenidas aportarán información bioquímica, molecular y fisiológica de los procesos patológicos facilitando su diagnóstico aun más precoz.

  2. Geschichtsbezogene und rechtspolitische Polonica im Bücherbestand Gottfried Lengnichs

    Directory of Open Access Journals (Sweden)

    Iwona Imańska

    2017-11-01

    Full Text Available Gottfried Lengnich, der Historiker und Syndikus der Stadt Danzig aus dem 18. Jahrhundert, hinterließ eine Büchersammlung mit über viertausend Büchern, die nach seinem Tode in zwei Auktionen im Juli und November 1774 versteigert werden sollten. Die Auktionskataloge befinden sich in der Staatsbibliothek zu Berlin – Stiftung Preußischer Kulturbesitz und sind auch online zugänglich. Wegen wissenschaftlicher Interessen Lengnichs befanden sich in seiner Bibliothek ca. 600 Polonica-Drucke, die meisten davon waren Abhandlungen im Themenfeld Geschichte, Recht und Politik. Die Analyse dieses Fragments des Bücherbestands Lengnichs bewies, dass der Syndikus eine perfekte Arbeitswerkstatt für sich schuf, indem er die Werke der meisten wichtigsten polnischen und fremden Autoren, die über die Geschichte und die Gesetzgebung Polens und Preußens schrieben, sammelte.

  3. Positrons in amorphous alloys

    International Nuclear Information System (INIS)

    Moser, Pierre.

    1981-07-01

    Positron annihilation techniques give interesting informations about ''empty spaces'' in amorphous alloys. The results of an extensive research work on the properties of either pre-existing or irradiation induced ''empty spaces'' in four amorphous alloys are presented. The pre-existing empty spaces appear to be small vacancy-like defects. The irradiation induced defects are ''close pairs'' with widely distributed configurations. There is a strong interaction between vacancy like and interstitial like components. A model is proposed, which explains the radiation resistance mechanism of the amorphous alloys. An extensive joint research work to study four amorphous alloys, Fe 80 B 20 ,Fe 40 Ni 40 P 14 B 6 , Cu 50 Ti 50 , Pd 80 Si 20 , is summarized

  4. Electroplating on titanium alloy

    Science.gov (United States)

    Lowery, J. R.

    1971-01-01

    Activation process forms adherent electrodeposits of copper, nickel, and chromium on titanium alloy. Good adhesion of electroplated deposits is obtained by using acetic-hydrofluoric acid anodic activation process.

  5. The treatment effect of porous titanium alloy rod on the early stage talar osteonecrosis of sheep.

    Directory of Open Access Journals (Sweden)

    Xiao-Kang Li

    Full Text Available Osteonecrosis of the talus (ONT may severely affect the function of the ankle joint. Most orthopedists believe that ONT should be treated at an early stage, but a concise and effective surgical treatment is lacking. In this study, porous titanium alloy rods were prepared and implanted into the tali of sheep with early-stage ONT (IM group. The curative effect of the rods was compared to treatment by core decompression (DC group. No significant differences in bone reconstruction were observed between the two groups at 1 month after intervention. After 3 months, the macroscopic view of gross specimens of the IM group showed ordinary contours, but the specimens of the DC group showed obvious partial bone defects and cartilage degeneration. Quantitative analysis of the reconstructed trabeculae by micro-CT and histological study suggested that the curative effect of the IM group was superior to that of the DC group at 3 months after intervention. These favorable short-term results of the implantation of porous titanium alloy rods into the tali of sheep with early-stage ONT may provide insight into an innovative surgical treatment for ONT.

  6. Synthesis of Cyclic Py-Im Polyamide Libraries

    OpenAIRE

    Li, Benjamin C.; Montgomery, David C.; Puckett, James W.; Dervan, Peter B.

    2013-01-01

    Cyclic Py-Im polyamides containing two GABA turn units exhibit enhanced DNA binding affinity, but extensive studies of their biological properties have been hindered due to synthetic inaccessibility. A facile modular approach toward cyclic polyamides has been developed via microwave-assisted solid-phase synthesis of hairpin amino acid oligomer intermediates followed by macrocyclization. A focused library of cyclic polyamides 1–7 targeted to the androgen response element (ARE) and the estrogen...

  7. Agrupador de imágenes multimodal no supervisado

    OpenAIRE

    Pérez Hernando, Jesús

    2013-01-01

    Trabajo Fin de Máster donde se implementa un método multimodal para la clasificación de imágenes sin etiquetar y sin intervención humana. Treball Fi de Màster on s'implementa un mètode multimodal per a la classificació d'imatges sense etiquetar i sense intervenció humana. Master thesis for the Computer Science Engineering program.

  8. Topologieoptimierung im Creo-Umfeld mit ProTopCI

    OpenAIRE

    Simmler, Urs

    2016-01-01

    Wikipedia umschreibt die Topologieoptimierung als ein computerbasiertes Berechnungsverfahren, durch welches eine günstige Grundgestalt (Topologie) für Bauteile unter mechanischer Belastung ermittelt werden kann. Durch die Verwendung von 3D-Druck-Verfahren wird die Gestaltung der Komponenten revolutioniert, weil diese nicht mehr abhängig vom Fertigungsverfahren sind. Dabei werden auch optimale Gitterstrukturen innerhalb der Komponenten immer wichtiger. Diese neuen Herausforderungen können im C...

  9. Simulation von Heißrubbeln im Gesamtbremssystem

    OpenAIRE

    Könning, Maximilian

    2017-01-01

    Bremsenrubbeln ist eine fremderregte Schwingung des Bremssystems, die es in der Ent-wicklung zu vermeiden gilt. Eine Wirkungskette des Heißrubbelns wurde in einem Vorgängerprojekt erarbeitet und bildet die Grundlage für diese Arbeit. Die Entstehung des Heißrubbelns besteht aus verschiedenen Phasen und beginnt mit einer initialen Verwellung. Daraus resultieren im Bremssystem Bremsmomentschwankungen und die schwankende Reibleistung führt wiederum zu einem Wachstum der Bremsscheibenverformung. ...

  10. Frauen mit Eßstörungen im Ausdauersport

    OpenAIRE

    Bös, Annette

    2003-01-01

    Die vorliegende Arbeit untersucht das Phänomen Eßstörungen bei Ausdauersportlerinnen. Auf dem Hintergrund des identitätstheoretischen Ansatzes von Stahr et al. (1995) geht es um die Frage nach den Hauptverursachungsmomenten der Eßstörungen von sieben jungen Sportlerinnen. Im Rahmen einer qualitativen Sozialforschungsarbeit wurden sieben Athletinnen in einem problemzentrierten Interview zur Phase ihrer Eßstörungserkrankung befragt. Die Arbeit setzt sich zum Ziel, einen Beitrag zur systematisch...

  11. Aufgabenbezogene Differenzierung und Entwicklung des verbalen Selbstkonzepts im Anfangsunterricht

    OpenAIRE

    Lipowsky, Frank; Kastens, Claudia; Lotz, Miriam; Faust, Gabriele

    2011-01-01

    Die vorliegende Studie untersucht, wie sich aufgabenbezogene Differenzierung im Deutschunterricht auf die Entwicklung des verbalen Selbstkonzepts von Erst- und Zweitklässlern (Lesen und Schreiben) auswirkt. Die untersuchte Stichprobe setzt sich aus 735 Schülern des ersten Schuljahres zusammen, die 38 Klassen an staatlichen und privaten Grundschulen besuchen und die bis zum Ende des zweiten Schuljahres in ihrer Entwicklung untersucht wurden. Die Ergebnisse zeigen sowohl einen indirekten als au...

  12. Mediengestaltung im interkulturellen Vergleich. Eine Studie zu Mikroaspekten der Globalisierung

    OpenAIRE

    Vera-Stahl, Gilda

    2017-01-01

    Die vorliegende Arbeit befasst sich mit dem interkulturellen Vergleich von lokalen Werbespots aus Deutschland und Ecuador. Im Zentrum des Interesses steht die implizite Dimension der technisch gebundenen audiovisuellen Kommunikation, d.h. die Art und Weise, wie die Kommunikationsmedien – das Bild, die Sprache und die Musik – bei der Gestaltung der Spots verwendet werden. Ausgangspunkt der Untersuchung bildet der Ansatz von Nothnagel/Vera (2004, 2005), dass Habitusformen der Face-to-Face-...

  13. Collecting Virtual Reference Statistics with an IM Chat-Bot

    Directory of Open Access Journals (Sweden)

    Mason R.K. Hall

    2008-06-01

    Full Text Available A perennial problem in libraries is capturing accurate statistics. This article addresses this problem with the creative use of Web 2.0 tools: Meebo and AOL Instant Messenger. It describes the development and implementation of an instant messaging "stat-bot" that prompts staff to record virtual reference statistics via IM. Step-by-step guidelines and the perl script are provided.

  14. Business-Intelligence-Systeme im Spannungsfeld zwischen Usability und Sicherheit

    OpenAIRE

    Hinck, Thorsten

    2010-01-01

    Business-Intelligence-Systeme stehen im Spannungsfeld zwischen Usability und Sicherheit. Die Gefahren und Sicherheitsmaßnahmen für Informationssysteme werden ermittelt und ökonomisch in Bezug zur Gebrauchstauglichkeit gesetzt. Es entsteht ein Sicherheitsprofil für Business-Intelligence-Systeme. Business-Intelligence-Systems are in tension between Usability and IT-Security. Risks and safety measures of informationsystems are defined and set in (economic) regard to Usability. A security prof...

  15. QUARTERLY TECHNICAL REPORT FOR IN-MINE (IM) SYSTEM

    International Nuclear Information System (INIS)

    Zvi H. Meiksin

    2001-01-01

    A circuit that had been earlier lab-tested to eliminate multi-antenna interference in the In-mine (IM) system was fabricated, implemented and tested successfully in a system setting. An adaptive, tracking comb-filter for the through-the-earth (TTE) communications system was designed and implemented. This resulted in noticeable noise reduction. Studies for multi-channel transmission have begun

  16. Characteristics of mechanical alloying of Zn-Al-based alloys

    International Nuclear Information System (INIS)

    Zhu, Y.H.; Hong Kong Polytechnic; Perez Hernandez, A.; Lee, W.B.

    2001-01-01

    Three pure elemental powder mixtures of Zn-22%Al-18%Cu, Zn-5%Al-11%Cu, and Zn-27%Al-3%Cu (in wt.%) were mechanically alloyed by steel-ball milling processing. The mechanical alloying characteristics were investigated using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy techniques. It was explored that mechanical alloying started with the formation of phases from pure elemental powders, and this was followed by mechanical milling-induced phase transformation. During mechanical alloying, phases stable at the higher temperatures formed at the near room temperature of milling. Nano-structure Zn-Al-based alloys were produced by mechanical alloying. (orig.)

  17. Refractory alloy component fabrication

    International Nuclear Information System (INIS)

    Young, W.R.

    1984-01-01

    Purpose of this report is to describe joining procedures, primarily welding techniques, which were developed to construct reliable refractory alloy components and systems for advanced space power systems. Two systems, the Nb-1Zr Brayton Cycle Heat Receiver and the T-111 Alloy Potassium Boiler Development Program, are used to illustrate typical systems and components. Particular emphasis is given to specific problems which were eliminated during the development efforts. Finally, some thoughts on application of more recent joining technology are presented. 78 figures

  18. Machining of titanium alloys

    CERN Document Server

    2014-01-01

    This book presents a collection of examples illustrating the resent research advances in the machining of titanium alloys. These materials have excellent strength and fracture toughness as well as low density and good corrosion resistance; however, machinability is still poor due to their low thermal conductivity and high chemical reactivity with cutting tool materials. This book presents solutions to enhance machinability in titanium-based alloys and serves as a useful reference to professionals and researchers in aerospace, automotive and biomedical fields.

  19. ImSET: Impact of Sector Energy Technologies

    Energy Technology Data Exchange (ETDEWEB)

    Roop, Joseph M.; Scott, Michael J.; Schultz, Robert W.

    2005-07-19

    This version of the Impact of Sector Energy Technologies (ImSET) model represents the ''next generation'' of the previously developed Visual Basic model (ImBUILD 2.0) that was developed in 2003 to estimate the macroeconomic impacts of energy-efficient technology in buildings. More specifically, a special-purpose version of the 1997 benchmark national Input-Output (I-O) model was designed specifically to estimate the national employment and income effects of the deployment of Office of Energy Efficiency and Renewable Energy (EERE) -developed energy-saving technologies. In comparison with the previous versions of the model, this version allows for more complete and automated analysis of the essential features of energy efficiency investments in buildings, industry, transportation, and the electric power sectors. This version also incorporates improvements in the treatment of operations and maintenance costs, and improves the treatment of financing of investment options. ImSET is also easier to use than extant macroeconomic simulation models and incorporates information developed by each of the EERE offices as part of the requirements of the Government Performance and Results Act.

  20. Zur mediopassiven 2. Und 3. Person dualis im indogermanischen

    Directory of Open Access Journals (Sweden)

    Bojan Čop

    1972-12-01

    Full Text Available Bekanntlich gibt es in einigen seltenen idg. Sprachen (im Arischen, Griechischen, Tocharischen auch Personal - suffixe für die 2. u n d 3. P. Du. des Mediopassivs. Von diesen sind die griechischen Ausgänge – 2. und 3. Du primär, 2. Du. sekundär, Du. sekundär sicher junge Neubildungen, s. z. B. Brugmann, Grdr.2 II 3 II, 657, § 602; Schwyzer, Gr. Gr. I 670, 672. Ein voll ausgebildetes System solcher Endungen besitzt das Arische; im Tocharischen kommt nur eine einzige Form mit solcher Endung vor, die die 2. P. Du. Med. lmperativi darstellt. Unter solchen Umständen scheint es schwierig, aus diesem Material wahrscheinliche Schlüsse für da_s Urindogermanische zu machen. Und doch ist gerade die tocharische Form, die uns eine ausserordentlich grosse Hilfe leistet, wenn man sie richtig zu beurteilen vermag. Die tocharische Endung, verbunden mit den arischen, wird unter Einschluss der allgemeinen Tendenzen und Regelungen im System der indogermanischen Personalsuffixe ohne Schwierigkeit die urindogermanische Urform erscheinen lassen.

  1. Report on converging insert moulding with µ-IM

    DEFF Research Database (Denmark)

    Islam, Aminul

    moulding with µ-IM  Task 5.2.1 and COTECH demonstrator: guide line for 5PRC production based on the concept of Task 5.2.1 Information and results provided by this deliverable will be directly used for one of the COTECH demonstrators production which will call for convergent insert moulding with µ......Task 5.2.1 deals with the technical feasibility of converging the state-of-the-art µ IM process with insert moulding to offer a wide range of multi-material µ components. The main objective of this deliverable is to summarize state-of-the-art information and to make the guideline needed...... for the convergence. In particular the following aspects are summed up in the deliverable:  Need for converging insert moulding with µ-IM  Objectives and expected outcome from task 5.2.1  State-of-the-art micro insert moulding and different scenario of micro insert moulding  Challenges ahead of converging insert...

  2. Electroplating technologies of alloys

    International Nuclear Information System (INIS)

    Kim, Joung Soo; Kim, Seung Ho; Jeong, Hyun Kyu; Hwnag, Sung Sik; Seo, Yong Chil; Kim, Dong Jin; Seo, Moo Hong

    2001-12-01

    In localization of electrosleeving technique, there are some problems like the following articles. Firstly, Patents published by OHT have claimed Ni-P, Ni-B alloy plating and Mo, Mn Cr, W, Co as a pinning agent. Secondly, alloy platings have many restrictions. There are some method to get alloy plating in spite of the various restrictions. If current density increase above limiting current density in one of the metals, both of the metals discharge at the same time. The addition of surface active agent(sufactant) in the plating solution is one of the methods to get alloy plating. Alloy plating using pulse current easily controls chemical composition and structure of deposit. Ni-Fe alloy plating is known to exhibit anomalous type of plating behavior in which deposition of the less noble metal is favoured. Presence of hypophohphite ion can control the iron codeposition by changing the deposition mechanism. Hypophohphite suppresses the deposition of Fe and also promotes Ni. Composite plating will be considered to improve the strength at the high temperature. Addition of particle size of 10δ400μm makes residual stress compressive in plate layer and suppress the grain growth rate at the high temperature. Addition of particle makes suface roughness high and fracture stress low at high temperature. But, selection of the kinds of particle and control of additives amount overcome the problems above

  3. [Das Bild und die Wahrnehmung der Stadt und der städtischen Gesellschaft im Hanseraum im Mittelalter und in der frühen Neuzeit] / Juhan Kreem

    Index Scriptorium Estoniae

    Kreem, Juhan

    2009-01-01

    Arvustus: Das Bild und die Wahrnehmung der Stadt und der städtischen Gesellschaft im Hanseraum im Mittelalter und in der frühen Neuzeit. hrsg. v. Roman Czaja. Torun, 2004. Torunis 2002. aastal toimunud konverentsi materjalid. Projekti "Pilt ja linn" raames ilmunud publikatsioonide loendit saab näha aadressil http://www.historiaurbium.org/english/attivita_images_en.html.

  4. Development of powder metallurgy 2XXX series Al alloy plate and sheet materials for high temperature aircraft structural applications, FY 1983/1984

    Science.gov (United States)

    Chellman, D. J.

    1985-01-01

    The objective of this investigation is to fabricate and evaluate PM 2124 Al alloy plate and sheet materials according to NASA program goals for damage tolerance and fatigue resistance. Previous research has indicated the outstanding strength-toughness relationship available with PM 2124 Al-Zr modified alloy compositions in extruded product forms. The range of processing conditions was explored in the fabrication of plate and sheet gage materials, as well as the resultant mechanical and metallurgical properties. The PM composition based on Al-3.70 Cu-1.85 Mg-0.20 Mn with 0.60 wt. pct. Zr was selected. Flat rolled material consisting of 0.250 in. thick plate was fabricated using selected thermal mechanical treatments (TMT). The schedule of TMT operations was designed to yield the extreme conditions of grain structure normally encountered in the fabrication of flat rolled products, specifically recrystallized and unrecrystallized. The PM Al alloy plate and sheet materials exhibited improved strength properties at thin gages compared to IM Al alloys, as a consequence of their enhanced ability to inhibit recrystallization and grain growth. In addition, the PM 2124 Al alloys offer much better combinations of strength and toughnessover equivalent IM Al. The alloy microstructures were examined by optical metallographic texture techniques in order to establish the metallurgical basis for these significant property improvements.

  5. Medienpädagogische Aufgabenfelder hinsichtlich der Visualität im digitalen Zeitalter. Desiderate im Umgang mit visuellen Medienkulturen

    Directory of Open Access Journals (Sweden)

    Petra Missomelius

    2017-04-01

    Full Text Available Die bildungskulturell leitende Funktion des Buches diffundiert im digitalen Zeitalter mobiler und transversaler Systeme von Netzwerkmedien. Zudem sind soziokulturelle Lebenswelten wie Bildungsinstitutionen, Familie und Peers durch Heterogenität gekennzeichnet. Indem auch diese Teil des Geflechts medienkultureller Architekturen werden, geraten ehemals gültige Unterscheidungsparameter wie explizites und implizites, formelles und informelles Wissen ins Wanken. Grenzziehungen und konkurrierende Auffassungen gegenüber diesen, vormals als der Bildung entgegengesetzt wahrgenommenen, Bereichen erweisen sich nunmehr als problematisch. So spielt Visualität im Kontext multimodal zusammengesetzter Bildungsmaterialien eine zunehmende Rolle und wird als Möglichkeit des Umgangs mit Komplexität eingesetzt. Wenngleich somit die Zurückhaltung gegenüber (Bewegt-Bildmedien in der pädagogischen Praxis schwindet, so haben sich mit der Digitalisierung medienkulturell bedeutsame Felder eröffnet, welche erziehungswissenschaftlicher Beachtung bedürfen. Eine sich der Komplexität digitaler Medienkulturen stellende Medienpädagogik bringt mit sich, dass auch Funktion und Gebrauch visueller Medien im Kontext von Bildungsprozessen reflektiert stattfinden. Medienpädagogisch informiertes Agieren in visuellen Medienkulturen ist darüber hinaus heute gerade deshalb essentiell, da es sich bei digital generierter Visualität um eine neue Qualität im Unterschied zu traditionellen Bildmedien handelt, welche der Logik der Repräsentation entsprachen. Der Beitrag thematisiert Desiderate, die sich hinsichtlich des Visuellen datenbasierter Medien für die Medienpädagogik ergeben, und geht dabei auf kommunikative Bildlichkeit, auf paradigmatische mediale Formen und auf datengestützte Wissensgenerierung ein.

  6. Texture in low-alloyed uranium alloys

    International Nuclear Information System (INIS)

    Sariel, J.

    1982-08-01

    The dependence of the preferred orientation of cast and heat-treated polycrystalline adjusted uranium and uranium -0.1 w/o chromium alloys on the production process was studied. The importance of obtaining material free of preferred orientation is explained, and a survey of the regular methods to determine preferred orientation is given. Dilatometry, tensile testing and x-ray diffraction were used to determine the extent of the directionality of these alloys. Data processing showed that these methods are insufficient in a case of a material without any plastic forming, because of unreproducibility of results. Two parameters are defined from the results of Schlz's method diffraction test. These parameters are shown theoretically and experimentally (by extreme-case samples) to give the deviation from isotropy. Application of these parameters to the examined samples showes that cast material has preferred orientation, though it is not systematic. This preferred orientation was reduced by adequate heat treatments

  7. WC-3015 alloy (high-temperature alloy)

    International Nuclear Information System (INIS)

    Anon.

    1974-01-01

    WC-3015 Nb alloy containing 28 to 30 Hf, 1 to 2 Zr, 13 to 16 W, 0 to 4 Ta, 0 to 5 Ti, 0.07 to 0.33 C, less than or equal to 0.02 N, less than or equal to 0.03 O, less than or equal to 0.001 H was developed for use at high temperature in oxidizing environments. Its composition can be tailored to meet specific requirements. When WC-3015 is exposed to O at elevated temperature, Hf and Nb oxidized preferentially and HfO 2 dissolves in Nb 2 O 5 to form 6HfO-Nb 2 O 5 . This complex oxide has a tight cubic lattice which resists the diffusion of O into the substrate. During 24-h exposure to air at 2400 0 F, the alloy oxidizes to a depth of approximately 0.035 in. with a surface recession of 0 to 0.004 in. Oxidation resistance of WC-3015 welds and base material can be further enhanced greatly by applying silicide coatings. WC-3015 alloy can be machined by conventional and electrical-discharge methods. It can be hot worked readily by extrusion, forging or rolling. Cold working can be used at room or elevated temperature. It can be welded by the electron-beam or Tig processes. Physical constants, typical mechanical properties at 75 to 2400 0 F, and effects of composition and heat treatment on tensile and stress-rupture properties of the alloy are tabulated

  8. Aluminum fin-stock alloys

    International Nuclear Information System (INIS)

    Gul, R.M.; Mutasher, F.

    2007-01-01

    Aluminum alloys have long been used in the production of heat exchanger fins. The comparative properties of the different alloys used for this purpose has not been an issue in the past, because of the significant thickness of the finstock material. However, in order to make fins lighter in weight, there is a growing demand for thinner finstock materials, which has emphasized the need for improved mechanical properties, thermal conductivity and corrosion resistance. The objective of this project is to determine the effect of iron, silicon and manganese percentage increment on the required mechanical properties for this application by analyzing four different aluminum alloys. The four selected aluminum alloys are 1100, 8011, 8079 and 8150, which are wrought non-heat treatable alloys with different amount of the above elements. Aluminum alloy 1100 serve as a control specimen, as it is commercially pure aluminum. The study also reports the effect of different annealing cycles on the mechanical properties of the selected alloys. Metallographic examination was also preformed to study the effect of annealing on the precipitate phases and the distribution of these phases for each alloy. The microstructure analysis of the aluminum alloys studied indicates that the precipitated phase in the case of aluminum alloys 1100 and 8079 is beta-FeAI3, while in 8011 it is a-alfa AIFeSi, and the aluminum alloy 8150 contains AI6(Mn,Fe) phase. The comparison of aluminum alloys 8011 and 8079 with aluminum alloy 1100 show that the addition of iron and silicon improves the percent elongation and reduces strength. The manganese addition increases the stability of mechanical properties along the annealing range as shown by the comparison of aluminum alloy 8150 with aluminum alloy 1100. Alloy 8150 show superior properties over the other alloys due to the reaction of iron and manganese, resulting in a preferable response to thermal treatment and improved mechanical properties. (author)

  9. Correlation between diffusion barriers and alloying energy in binary alloys

    DEFF Research Database (Denmark)

    Vej-Hansen, Ulrik Grønbjerg; Rossmeisl, Jan; Stephens, Ifan

    2016-01-01

    In this paper, we explore the notion that a negative alloying energy may act as a descriptor for long term stability of Pt-alloys as cathode catalysts in low temperature fuel cells.......In this paper, we explore the notion that a negative alloying energy may act as a descriptor for long term stability of Pt-alloys as cathode catalysts in low temperature fuel cells....

  10. INVESTIGATION OF MAGNESIUM ALLOYS MACHINABILITY

    Directory of Open Access Journals (Sweden)

    Berat Barıs BULDUM

    2013-01-01

    Full Text Available Magnesium is the lightest structural metal. Magnesium alloys have a hexagonal lattice structure, which affects the fundamental properties of these alloys. Plastic deformation of the hexagonal lattice is more complicated than in cubic latticed metals like aluminum, copper and steel. Magnesium alloy developments have traditionally been driven by industry requirements for lightweight materials to operate under increasingly demanding conditions. Magnesium alloys have always been attractive to designers due to their low density, only two thirds that of aluminium and its alloys [1]. The element and its alloys take a big part of modern industry needs. Especially nowadays magnesium alloys are used in automotive and mechanical (trains and wagons manufacture, because of its lightness and other features. Magnesium and magnesium alloys are the easiest of all metals to machine, allowing machining operations at extremely high speed. All standard machining operations such as turning, drilling, milling, are commonly performed on magnesium parts.

  11. Hydrogen embrittlement and hydrogen induced stress corrosion cracking of high alloyed austenitic materials; Wasserstoffversproedung und wasserstoffinduzierte Spannungsrisskorrosion hochlegierter austenitischer Werkstoffe

    Energy Technology Data Exchange (ETDEWEB)

    Mummert, K; Uhlemann, M; Engelmann, H J [Institut fuer Festkoerper- und Werkstofforschung Dresden e.V. (Germany)

    1998-11-01

    The susceptiblity of high alloyed austenitic steels and nickel base alloys to hydrogen-induced cracking is particularly determined by 1. the distribution of hydrogen in the material, and 2. the microstructural deformation behaviour, which last process is determined by the effects of hydrogen with respect to the formation of dislocations and the stacking fault energy. The hydrogen has an influence on the process of slip localization in slip bands, which in turn affects the microstructural deformation behaviour. Slip localization increases with growing Ni contents of the alloys and clearly reduces the ductility of the Ni-base alloy. Although there is a local hydrogen source involved in stress corrosion cracking, emanating from the corrosion process at the cathode, crack growth is observed only in those cases when the hydrogen concentration in a small zone ahead of the crack tip reaches a critical value with respect to the stress conditions. Probability of onset of this process gets lower with growing Ni content of the alloy, due to increasing diffusion velocity of the hydrogen in the austenitic lattice. This is why particularly austenitic steels with low Ni contents are susceptible to transcrystalline stress corrosion cracking. In this case, the microstructural deformation process at the crack tip is also influenced by analogous processes, as could be observed in hydrogen-loaded specimens. (orig./CB) [Deutsch] Die Empfindlichkeit von hochlegierten austentischen Staehlen und Nickelbasislegierungen gegen wasserstoffinduziertes Risswachstum wird im wesentlichen bestimmt durch 1. die Verteilung von Wasserstoff im Werkstoff und 2. das mikrostrukturelle Verformungsverhalten. Das mikrostrukturelle Deformationsverhalten ist wiederum durch den Einfluss von Wasserstoff auf die Versetzungsbildung und die Stapelfehlerenergie charakterisiert. Das mikrostrukturelle Verformungsverhalten wird durch wasserstoffbeeinflusste Gleitlokalisierung in Gleitbaendern bestimmt. Diese nimmt mit

  12. Structural thermodynamics of alloys

    CERN Document Server

    Manenc, Jack

    1973-01-01

    Technical progress has for a very long time been directly dependent on progress in metallurgy, which is itself connected with improvements in the technology of alloys. Metals are most frequently used in the form of alloys for several reasons: the quantity of pure metal in its native state in the earth's crust is very limited; pure metals must be extracted from ores which are themselves impure. Finally, the methods of treatment used lead more easily to alloys than to pure metals. The most typical case is that of iron, where a pure ore may be found, but which is the starting point for cast iron or steel, alloys of iron and carbon. In addition, the properties of alloys are in general superior to those of pure metals and modem metallurgy consists of controlling these properties so as to make them conform to the requirements of the design office. Whilst the engineer was formerly compelled to adapt his designs and constructions to the materials available, such as wood, stone, bronze, iron, cast iron and ordinary st...

  13. Finanzmärkte – Unternehmungen – Informationen: Ergebnisse des Projektes im Wintersemester 2016/2017

    OpenAIRE

    Geyer, Helmut; Grau, Svenja; Giersch, Peter; Eckardt, Maximilian; Eder, Josephin; Catholy, Victoria; Pisak, Anastasia; Löser, Matthias; Jehring, Maximilian; Zhang, Haoyang; Grabengießer, Anja; Gruschwitz, Karoline; Heinrich, Katharina; Patzer, Vivien; Päsler, Florian

    2018-01-01

    Der vorliegende Beitrag der Wirtschaftswissenschaftlichen Schriften ist ein Sammelband, der die Beiträge der Studierenden des 2. Fachsemesters im Masterstudiengang General Management aus dem Wintersemester 2016/2017 umfasst. Die Einzelbeiträge wurden in einer zwei Monate dauernden Projektarbeit im Herbst 2016 erarbeitet und im Januar 2017 präsentiert. Der Themenschwerpunkt für dieses Jahr lag auf dem Bereich "Immobilien/Wohnungspolitik". Innerhalb dieser Vorgabe wurde ein breites Spektrum bea...

  14. [Photoionization ion mobility spectrometry (UV-IMS) for the isomeric volatile organic compounds].

    Science.gov (United States)

    Li, Hu; Niu, Wen-qi; Wang, Hong-mei; Huang, Chao-qun; Jiang, Hai-he; Chu, Yan-nan

    2012-01-01

    The construction and performance study is reported for a newly developed ultraviolet photoionization ion mobility spectrometry (UV-IMS). In the present paper, an UV-IMS technique was firstly developed to detect eleven isomeric volatile organic compounds including the differences in the structure of carbon chain, the style of function group and the position of function group. Their reduced mobility values were determined and increased in this order: linears alcohols homemade UV-IMS was around ppb-ppm.

  15. De-alloyed platinum nanoparticles

    Science.gov (United States)

    Strasser, Peter [Houston, TX; Koh, Shirlaine [Houston, TX; Mani, Prasanna [Houston, TX; Ratndeep, Srivastava [Houston, TX

    2011-08-09

    A method of producing de-alloyed nanoparticles. In an embodiment, the method comprises admixing metal precursors, freeze-drying, annealing, and de-alloying the nanoparticles in situ. Further, in an embodiment de-alloyed nanoparticle formed by the method, wherein the nanoparticle further comprises a core-shell arrangement. The nanoparticle is suitable for electrocatalytic processes and devices.

  16. Incidental findings in chest X-rays; Zufallsbefunde im Roentgenthorax

    Energy Technology Data Exchange (ETDEWEB)

    Wielpuetz, M.O.; Kauczor, H.U. [Universitaetsklinikum Heidelberg, Klinik fuer Diagnostische und Interventionelle Radiologie, Heidelberg (Germany); Universitaet Heidelberg, Translational Lung Research Center (TLRC), Deutsches Zentrum fuer Lungenforschung (DZL), Heidelberg (Germany); Universitaetsklinikum Heidelberg, Klinik fuer Diagnostische und Interventionelle Radiologie mit Nuklearmedizin, Thoraxklinik, Heidelberg (Germany); Weckbach, S. [Universitaetsklinikum Heidelberg, Klinik fuer Diagnostische und Interventionelle Radiologie, Heidelberg (Germany); Universitaet Heidelberg, Translational Lung Research Center (TLRC), Deutsches Zentrum fuer Lungenforschung (DZL), Heidelberg (Germany)

    2017-04-15

    Conventional projection radiography (chest x-ray) is one of the most frequently requested procedures in radiology. Even though chest x-ray imaging is frequently performed in asymptomatic patients for preoperative assessment, clinically relevant incidental findings are relatively scarce. This is due to the relatively low sensitivity of chest x-rays where few clinically relevant incidental findings are to be expected, as any detectable pathologies will as a rule already be clinically symptomatic. Recommendations from relevant societies for the management of incidental findings, apart from the clarification of incidental nodules, do not exist. This review article therefore describes the most frequent and typical incidental findings of lung parenchyma (apart from pulmonary nodules), mediastinal structures including the hilum of the lungs, pleura, chest wall and major vessels. Also described are those findings which can be diagnosed with sufficient certainty from chest x-rays so that further clarification is not necessary and those which must be further clarified by multislice imaging procedures or other techniques. (orig.) [German] Eine der haeufigsten Untersuchungen in der Radiologie ist die konventionelle Projektionsradiographie des Thorax (Roentgenthorax). Auch wenn projektionsradiographische Aufnahmen im Rahmen einer praeoperativen Abklaerung haeufig als orientierende Untersuchung angefertigt werden, sind - bedingt durch die relativ geringe Sensitivitaet des Roentgenthorax - wenig klinisch relevante Zufallsbefunde zu erwarten, da nachweisbare Pathologien in der Regel bereits auch klinisch apparent sind. Empfehlungen entsprechender Fachgesellschaften zu Zufallsbefunden im Roentgenthorax jenseits der Abklaerung von Rundherden liegen nicht vor. Die vorliegende Arbeit beleuchtet daher haeufige und typische Zufallsbefunde des Lungenparenchyms (ausser den Lungenrundherden), der mediastinalen Strukturen einschliesslich der Hili, der Pleura, der Thoraxwand sowie der

  17. Die Freunde im und die Freude am Fernsehen

    Directory of Open Access Journals (Sweden)

    Amina Ovcina Cajacob

    2012-09-01

    Full Text Available Das Ziel der vorliegenden Arbeit besteht darin, die Wirkungen von Popstars und Popbands auf Jugendliche (13- bis 17-Jährige zu erforschen. Im Mittelpunkt der Interessen steht die Frage, welche Wirkungen aus der Rezeption von Musiksendungen (bzw. Videoclips von Musiksendern entstehen und welche Charakteristika innerhalb der aufgebauten Beziehungen zu den Stars bemerkbar sind. Andererseits wurden die Unterschiede und Parallelen zwischen parasozialen Beziehungen zu den Stars und orthosozialen Beziehungen aufgezeigt. Im Zusammenhang mit der empirischen Untersuchung bezieht sich die Autorin auf den Uses-and-Gratifications-Approach, wobei die bedürfnissbefriedigenden Wirkungen von Musikkanälen und den dazu gehörigen Popstars im Mittelpunkt stehen. Mit Hilfe des Uses-and-Gratifications-Approach wird angenommen, dass das Konsumieren der Musiksendungen und der Musikstars von den Jugendlichen gezielt zur Befriedigung bestimmter Bedürfnisse eingesetzt wird.The objective of this study is to explore the effects of pop stars on adolescents (aged between 13 and 17. The focus of interest is the question what effect music channels (i.e. video clips from music channels produce and what characteristics are noticeable from the formed relationship between adolescents and pop stars. On the other side, parallels and differences have been drawn between the para-social relationships to pop stars and ortho-social relationships. In connection with empirical study, the author also refers to Uses-and Gratification-Approach where the need satisfying effects of music channels and pop stars are in focus. With the help of Uses-and Gratification-Approach it will be assumed, that aim of watching music channels and therefore pop stars will be pointed toward the gratification of specific needs.

  18. ImBuild: Impact of building energy efficiency programs

    Energy Technology Data Exchange (ETDEWEB)

    Scott, M.J.; Hostick, D.J.; Belzer, D.B.

    1998-04-01

    As part of measuring the impact of government programs on improving the energy efficiency of the Nation`s building stock, the Department of Energy Office of Building Technology, State and Community Programs (BTS) is interested in assessing the economic impacts of its portfolio of programs, specifically the potential impact on national employment and income. The special-purpose version of the IMPLAN model used in this study is called ImBuild. In comparison with simple economic multiplier approaches, such as Department of Commerce RIMS 2 system, ImBuild allows for more complete and automated analysis of the economic impacts of energy efficiency investments in buildings. ImBuild is also easier to use than existing macroeconomic simulation models. The authors conducted an analysis of three sample BTS energy programs: the residential generator-absorber heat exchange gas heat pump (GAX heat pump), the low power sulfur lamp (LPSL) in residential and commercial applications, and the Building America program. The GAX heat pump would address the market for the high-efficiency residential combined heating and cooling systems. The LPSL would replace some highly efficient fluorescent commercial lighting. Building America seeks to improve the energy efficiency of new factory-built, modular, manufactured, and small-volume, site-built homes through use of systems engineering concepts and early incorporation of new products and processes, and by increasing the demand for more energy-efficient homes. The authors analyze a scenario for market penetration of each of these technologies devised for BTS programs reported in the BTS GPRA Metrics Estimates, FY99 Budget Request, December 19, 1997. 46 figs., 4 tabs.

  19. Welding of refractory alloys

    International Nuclear Information System (INIS)

    Lessmann, G.G.

    1984-01-01

    This review primarily summarizes welding evaluations supported by NASA-Lewis Research Center in the 1960s. A literature search run in preparation for this review indicates that more recent work is modest by comparison. Hence, this review restates these accomplishments briefly and addresses opportunities which have evolved in welding technology (such as lasers) in the intervening decade. Emphasis in this review is given to tantalum- and niobium-base alloys. Considerable work was also done to assure that a consistent comparison was made with tungsten. A wide variety of candidate alloys derived primarily from developments directed at aircraft propulsion applications were available. Early efforts by NASA were directed at screening studies to select promising structural alloys for the space power application. This objective required fine tuning of welding procedures, e.g., the demonstration of stringent standards for control of welding atmosphere to assure good corrosion resistance in liquid alkali metals. 16 figures, 6 tables

  20. Alloys under irradiation

    International Nuclear Information System (INIS)

    Martin, G.; Bellon, P.; Soisson, F.

    1997-01-01

    During the last two decades, some effort has been devoted to establishing a phenomenology for alloys under irradiation. Theoretically, the effects of the defect supersaturation, sustained defect fluxes and ballistic mixing on solid solubility under irradiation can now be formulated in a unified manner, at least for the most simple cases: coherent phase transformations and nearest-neighbor ballistic jumps. Even under such restrictive conditions, several intriguing features documented experimentally can be rationalized, sometimes in a quantitative manner and simple qualitative rules for alloy stability as a function of irradiation conditions can be formulated. A quasi-thermodynamic formalism can be proposed for alloys under irradiation. However, this point of view has limits illustrated by recent computer simulations. (orig.)

  1. Nickel base alloys

    International Nuclear Information System (INIS)

    Gibson, R.C.; Korenko, M.K.

    1980-01-01

    Nickel based alloy, the characteristic of which is that it mainly includes in percentages by weight: 57-63 Ni, 7-18 Cr, 10-20 Fe, 4-6 Mo, 1-2 Nb, 0.2-0.8 Si, 0.01-0.05 Zr, 1.0-2.5 Ti, 1.0-2.5 Al, 0.02-0.06 C and 0.002-0.015 B. The aim is to create new nickel-chromium alloys, hardened in a solid solution and by precipitation, that are stable, exhibit reduced swelling and resistant to plastic deformation inside the reactor. These alloys of the gamma prime type have improved mechanical strengthm swelling resistance, structural stability and welding properties compared with Inconel 625 [fr

  2. Hydrogen in titanium alloys

    International Nuclear Information System (INIS)

    Wille, G.W.; Davis, J.W.

    1981-04-01

    The titanium alloys that offer properties worthy of consideration for fusion reactors are Ti-6Al-4V, Ti-6Al-2Sn-4Zr-2Mo-Si (Ti-6242S) and Ti-5Al-6Sn-2Zr-1Mo-Si (Ti-5621S). The Ti-6242S and Ti-5621S are being considered because of their high creep resistance at elevated temperatures of 500 0 C. Also, irradiation tests on these alloys have shown irradiation creep properties comparable to 20% cold worked 316 stainless steel. These alloys would be susceptible to slow strain rate embrittlement if sufficient hydrogen concentrations are obtained. Concentrations greater than 250 to 500 wppm hydrogen and temperatures lower than 100 to 150 0 C are approximate threshold conditions for detrimental effects on tensile properties. Indications are that at the elevated temperature - low hydrogen pressure conditions of the reactors, there would be negligible hydrogen embrittlement

  3. Thermische Verletzungen im Kindesalter: Eine retrospektive Kohortenstudie von 212 Fällen

    OpenAIRE

    Sperling, Patrik Leonhart

    2012-01-01

    Anhand einer retrospektiven Datenanalyse sollen Verteilungsmuster von Verbrennungen und Verbrühungen bezogen auf Alter und Geschlecht untersucht werden. Erfasst wurden 212 Patienten im Alter von 0 bis 16 Jahren betrachtet, die im Zeitraum vom 01.01.2004 bis zum 31.12.2009 auf Grund einer thermischen Verletzung stationär im Universitätsklinikum Würzburg der Julius-Maximilians-Universität Würzburg behandelt wurden. Den größten Anteil thermischer Verletzungen im Kindesalter stellen Verbrühungen ...

  4. A two-stage extraction procedure for insensitive munition (IM) explosive compounds in soils.

    Science.gov (United States)

    Felt, Deborah; Gurtowski, Luke; Nestler, Catherine C; Johnson, Jared; Larson, Steven

    2016-12-01

    The Department of Defense (DoD) is developing a new category of insensitive munitions (IMs) that are more resistant to detonation or promulgation from external stimuli than traditional munition formulations. The new explosive constituent compounds are 2,4-dinitroanisole (DNAN), nitroguanidine (NQ), and nitrotriazolone (NTO). The production and use of IM formulations may result in interaction of IM component compounds with soil. The chemical properties of these IM compounds present unique challenges for extraction from environmental matrices such as soil. A two-stage extraction procedure was developed and tested using several soil types amended with known concentrations of IM compounds. This procedure incorporates both an acidified phase and an organic phase to account for the chemical properties of the IM compounds. The method detection limits (MDLs) for all IM compounds in all soil types were regulatory risk-based Regional Screening Level (RSL) criteria for soil proposed by the U.S. Army Public Health Center. At defined environmentally relevant concentrations, the average recovery of each IM compound in each soil type was consistent and greater than 85%. The two-stage extraction method decreased the influence of soil composition on IM compound recovery. UV analysis of NTO established an isosbestic point based on varied pH at a detection wavelength of 341 nm. The two-stage soil extraction method is equally effective for traditional munition compounds, a potentially important point when examining soils exposed to both traditional and insensitive munitions. Copyright © 2016 Elsevier Ltd. All rights reserved.

  5. Einsatz von Skype im Unternehmen: Chancen und Risiken

    OpenAIRE

    Messerer, Thomas

    2016-01-01

    Gegenstand dieser Studie ist der Internet-Telefoniedienst Skype, der sich grundsätzlich an Endanwender richtet. Im Mittelpunkt steht dabei die Frage, ob und unter welchen Umständen sich dieses Skype-Angebot auch für den Einsatz in Unternehmen eignet. Microsoft bietet darüber hinaus eine Skype-Lösung (ehemals Lync) an, die sich ausdrücklich an Unternehmen wendet. Deren Markenname ist „Skype for Business“. Dieser Dienst wird in der vorliegenden Studie nicht untersucht; dazu hat das Autorenteam ...

  6. ODE/IM correspondence and modified affine Toda field equations

    Energy Technology Data Exchange (ETDEWEB)

    Ito, Katsushi; Locke, Christopher

    2014-08-15

    We study the two-dimensional affine Toda field equations for affine Lie algebra g{sup ^} modified by a conformal transformation and the associated linear equations. In the conformal limit, the associated linear problem reduces to a (pseudo-)differential equation. For classical affine Lie algebra g{sup ^}, we obtain a (pseudo-)differential equation corresponding to the Bethe equations for the Langlands dual of the Lie algebra g, which were found by Dorey et al. in study of the ODE/IM correspondence.

  7. Using scenarios for dissemination - Experiences from the IMS GLOBEMEN project

    DEFF Research Database (Denmark)

    Ollus, Martin; Hartel, Ingo; Tølle, Martin

    2002-01-01

    due to the complexities of the interdisciplinary field addressed. As an instrument for communication to the non-specialist public the IMS GLOBEMEN project produces a web-based scenario as part of its dissemination activities. It is aimed at giving a practical overview of specific challenges...... in the field and contributions from the project. Based upon a generic Virtual Enterprise Reference Architecture (called VERA) the partners in the project have developed a set of protypes to be implemeted in their own business processes. The results will be illutrated in one integrated scenario....

  8. Morphological and physiological investigations on mutants of Fusarium monoliforme IM

    International Nuclear Information System (INIS)

    Gancheva, V.

    1996-01-01

    High-producing mutants of Fusarium moniliforme IM are obtained as a result of gamma irradiation. The cultural characteristics of mutant strains 3284, 3211 and 76 following incubation of the producers for 14 days on potato-glucose agar are described. The colour of the aerial and substrate mycelium and the ability of the mutant strains to form conidiae and pigments are discussed in detail. The differences in the ability of mutants to assimilate different carbon and nitrogen sources are of specific importance for modelling nutrient media for submerged cultivation of F. moniliforme. 2 tabs., 2 figs. 7 refs

  9. [Leben im Eismeer - Tauchuntersuchungen zur Biologie arktischer Meerespflanzen und Meerestiere

    Science.gov (United States)

    Lippert; Karsten; Wiencke

    2000-01-01

    Die Maske wird nochmals auf Dichtigkeit überprüft, der Knoten der Sicherungsleine mit zwei halben Schlägen fixiert, dann rutscht die Taucherin von der Eiskante in das kalte Wasser. Eine halbe Stunde vergeht, bevor ihr Kopf wieder aus dem Eisloch auftaucht und sie ein großes Sammelnetz nach oben reicht, gefüllt mit verschiedenen Arten von Makroalgen. Obwohl noch große Flächen des Kongsfjordes im arktischen Spitzbergen zugefroren sind und das Festland von einer dicken Schneedecke bedeckt ist, hat unter Wasser in den Algenwäldern bereits der Sommer und damit die Saison der Meeresbiologen begonnen.

  10. Die filmstilistische Darstellung von Klaras Gehbehinderung im Kinderfilm "Heidi"

    Directory of Open Access Journals (Sweden)

    Maria Ohrfandl

    2016-09-01

    Full Text Available Dieser Beitrag soll die Forschungslücke zur Darstellung von Behinderungen speziell im Kinderfilm im deutschsprachigen Raum füllen. Auf Basis einer neoformalistisch orientierten Filmanalyse nach Bordwell und Thompson (2008, wird anhand von drei Filmsequenzen eine mögliche Lesart des Kinderfilms "Heidi" (Marcus 2005 entwickelt, um die filmstilistische Darstellung der Gehbehinderung des Mädchens Klara zu untersuchen. Die Ergebnisse werden mit theoretischen Überlegungen zur Problematik der Begriffsbestimmung von Körperbehinderung sowie zur Mobilität und Selbstbestimmung von Menschen mit Körperbehinderungen in Bezug gesetzt. Dabei zeigt sich im Wesentlichen, dass im Kinderfilm "Heidi" (Marcus 2005 Klaras Gehbehinderung als 'heilbare Krankheit' und der Rollstuhl als Einschränkung von Mobilität begriffen wird. Außerdem unterliegt Klara aufgrund ihrer Körperbehinderung überwiegend der Fremdbestimmung von Erwachsenen. Zur Klärung wahrscheinlicher filmischer Bildungspotenziale werden die Ergebnisse schließlich anhand der von Jörissen und Marotzki (2009 entwickelten Orientierungsdimensionen "Wissens-, Handlungs-, Grenz- und Biographiebezug" diskutiert. This article aims to bridge a knowledge gap by showing ways of representing disabilities in the German children film genre. Using Bordwell and Thomson's (2008 neoformalistically orientated film analysis approach, the movie "Heidi" (Marcus 2005 is analysed. Bordwell and Thompson's (2008 method is applied to three sequences of "Heidi" in order to present an interpretation and to discuss the representation of Clara's walking impediment. The results are then associated with theoretical considerations regarding the mobility and self-determination of people with disabilities and problematic definitions of the term 'physical disability'. It is shown that characters in the children's film "Heidi" (Marcus 2005 regard Clara's walking impediment as a 'curable disease' and the wheelchair as a limitation

  11. Multimediale Kommunikationsarchitekturen: Herausforderungen und Weiterentwicklungen der Forschungen im Kulturraum Internet

    Directory of Open Access Journals (Sweden)

    Winfried Marotzki

    2008-04-01

    Full Text Available Im Folgenden setze ich mich mit der Frage auseinander, wie der sich rasch verändernde kulturelle Raum Internet forschungsmässig zu erschliessen ist. Dabei möchte ich weniger den aktuellen Stand der Internet Forschung bilanzieren, das ist durch verschiedene einschlägige Publikationen bereits geschehen. Vielmehr werde ich mich darauf konzentrieren, die Hauptveränderungen des Internet in den letzten Jahren zu skizzieren, um daran anknüpfend einige ausgewählte methodische Probleme, die damit verbunden sind, zu bearbeiten.

  12. "ARZT IM GANZEN SPEKTRUM" ["PHYSICIAN IN THE FULL SPEKTRUM"

    Directory of Open Access Journals (Sweden)

    Mitzkat, Anika

    2006-11-01

    Full Text Available [english] For more than 20 years teaching in the medical program at Witten/Herdecke Private University has followed the goal of introducing students to the reality of patient care by a practical approach. The “adaptive physician personality” describes the educational objective of a physician who is able to orient towards “the full spectrum” of his professional core competencies. In regard to the “adaptive physician personality” four Integrated Curricula (Communication, Science, Ethics, and Health Economy had been developed along with the introduction of a model medical program in 2000. Witten/Herdecke University thereby today addresses the requirements defined by the New Medical Licensure Act of 27.06.2002 and brings forward at the same time a program which prepares the medical student for the multi-dimensional responsibilities in the reality of modern health care. This article describes the Integrated Curricula exemplified by the Communication curriculum. This relatively young area of medical teaching in Germany is still extensively unexplored concerning evidence-based research about its effectiveness and efficiency of teaching. [german] Die Lehre im Studiengang Humanmedizin an der Privaten Universität Witten/Herdecke (UWH verfolgt seit mehr als 20 Jahren das Ziel, Studierende praxisnah an die Realität der Patientenversorgung heranzuführen. Das Ausbildungsziel des Medizinstudiums ist dabei die ”lernfähige Arztpersönlichkeit”, die sich möglichst „im ganzen Spektrum” ärztlicher Kernkompetenzen zu orientieren vermag. Im Hinblick auf das Ziel der „lernfähigen Arztpersönlichkeit“ wurden mit der Einführung des Modellstudiengangs Medizin im Jahr 2000 vier Integrierte Curricula (Kommunikation, Wissenschaft, Ethik und Gesundheitsökonomie aufgebaut. Die Lehre an der Universität Witten/Herdecke geht damit einerseits auf die Anforderungen, die mit Einführung der neuen Approbationsordnung für Ärzte vom 27.06.2002 an

  13. Primary fibrosarcoma im small intestine of dog - Case report

    OpenAIRE

    Geórgia Modé Magalhães; Juliana Santilli; Sabryna Gouveia Calazans; Lilian Toshiko Nishimura; Sofia de Amorim Cerejo; Fernanda Gosuen Gonçalves Dias

    2015-01-01

    ABSTRACT. Magalhães G.M., Santilli J., Calazans S.G., Nishimura L.T., Cerejo S.A. & Dias F.G.G. [Primary fibrosarcoma im small intestine of dog - Case report.] Fibrossarcoma primário em intestino delgado de cão - Relato de caso. Revista Brasileira de Medicina Veterinária, 37(2):145-148, 2015. Programa de Pós-Graduação em Medicina Veterinária de Pequenos Animais, Universidade de Franca, Av. Dr. Armando Salles Oliveira, 201, Cx postal 82, Parque Universitá- rio, Franca, SP 14404-600, Brasil. E-...

  14. Sexualität im Werk Arno Schmidts

    OpenAIRE

    Reischert, Jessica

    2006-01-01

    Die Sexualität im Frühwerk Arno Schmidts stellt ein umfangreiches und komplexes Thema dar, das dennoch auf gewisse Grundmuster und –vorgänge reduziert werden kann. So haben sich bei der Begegnung von Menschen untereinander klare Linien ergeben, anhand derer viele Gespräche eingeordnet und analysiert werden können. Unterschieden werden können mehrere Gesprächstypen, in denen sich bestimmte Verhaltensweisen der Schmidtschen Protagonisten zeigen: In den geschlechtlich gemischten Gesprächsrunden ...

  15. Economic management system at the im. Abakumova mine

    Energy Technology Data Exchange (ETDEWEB)

    Martynenko, V.F. (Shakhta im. Abakumova (Ukraine))

    1992-08-01

    Decribes new methods of settling accounts between mine departments, and methods of paying wages introduced in the im. Abakumova mine. Internal banknotes were introduced in 1991. Ways of clearing the cost of materials, depreciation and repair work are explained. Claims of mine departments are settled by arbitration committees. It was found that the new system of financial self-dependence of mine departments prevented downtime from occurring. Losses of coal reserves were reduced in 1991 by 28% compared to 1990. In the first quarter of 1992, labor efficiency increased by 6% compared to the first quarter in 1991.

  16. Psychiatrie im Nationalsozialismus. Zwangssterilisation und Euthanasie am Beispiel des Saarlandes

    Directory of Open Access Journals (Sweden)

    Torsten Mergen

    2006-03-01

    Full Text Available In seiner ausführlichen und anhand zahlreicher Patientenakten erarbeiteten Dissertationsschrift untersucht Christoph Braß die Folgen des rassenhygienischen Denkens am Beispiel des Saarlandes von 1935 bis 1945. Dabei analysiert er einerseits systematisch die Vorgänge im Rahmen der Zwangssterilisation von psychisch Kranken und Behinderten, andererseits zeigt er exemplarisch Vorgeschichte, Verlauf und Ergebnisse der Euthanasie an saarländischen Patienten. Es entsteht eine eindrucksvolle und durch die dichte Darstellung Betroffenheit auslösende Studie, die eine wichtige Lücke der NS-Forschung schließt.

  17. Der antiskeptische Boden unter dem Gehirn im Tank

    OpenAIRE

    Müller, Olaf L.

    2001-01-01

    Crispin Wright hat die bislang beste Rekonstruktion von Putnams Beweis gegen die skeptische Hypothese vom Gehirn im Tank vorgelegt. Aber selbst in Wrights Fassung hat der Beweis einen Mangel: Er wird mithilfe eines Prädikates wie z.B. "Tiger" geführt und funktioniert nur, wenn man sich darauf verlassen kann, dass es Tiger wirklich gibt. Aber die Skeptikerin bestreitet, über die Existenz von Tigern bescheid zu wissen. Das Problem lässt sich dadurch beheben, dass man den Beweis – statt mit dem ...

  18. Attempt to promote hospital management by IM Public Platform

    Directory of Open Access Journals (Sweden)

    Hui CHEN

    2014-06-01

    Full Text Available Thisarticle has analyzed the contribution of modern IT to hospital management: using public platform of IM (instant message/communication will make it more convenient and efficient to conduct communication with (prior to the treatment, conduct treatment, and provide post-treatment service for patients and their family; withthe set-up of a smooth and efficient information channel set up, the relationship between patients and doctors will be greatly improved ,thus reputation and credibility of the hospital and its doctors will be promoted; when the public has better received the hospital and its doctors, social harmony will be achieved. 

  19. Verminderung der Prüfungsangst durch Modellernen im Klassenzimmer

    OpenAIRE

    Ellgring, Johann Heinrich; Elbing, Eberhard

    2010-01-01

    Die Wirksamkeit des Modellernens im Klassenzimmer zur Veränderung der Prüfungsangst wurde bei 152 Knaben und 164 Mädchen der Klassen 5-8 einer Hauptschule untersucht. Den Schülern wurden die Angst-Skalen (TASe und GASC) von Sarason vorgelegt. Anhand der Fragebogenergebnisse wurden die Kinder den Kategorien "hochängstlich" (HA), "mittelängstlich" (MA) und "niedrigängstlich" (NA) zugeordnet. Für 3,5 Monate wurden die folgenden Paarbildungen (Banknachbarn) beibehalten: HA neben HA, MA und NA, NA...

  20. Der Wortschatz als "Wahrheitsvermittler" im außenpolitischen Pressekommentar

    Directory of Open Access Journals (Sweden)

    Vida Jesenšek

    1998-12-01

    Full Text Available Bekannterweise weist die ausgewählte journalistische Textsorte eine spezifische textuelle Struktur auf; ihre inhaltliche (evaluative und intentionale Komponente sind zunächst in Kürze zu erläutern. Es zeigt sich, daß die Bewertung als obligatorisches Element eines Kommentartextes textstrukturell und stilistisch-pragmatisch bedingt ist und daß sie im Prinzip mittels Lexik realisiert wird. Das Funktionieren der Lexik als Bewertungsträger wird anschließend aufgrund einer exemplarischen Fallanalyse dargestellt, wobei hauptsächlich Zusammenhänge zwischen textstrukturellen Besonderheiten der Kommentartexte und stilistisch-pragmatischen Eigenschaften der Lexik interessieren.

  1. Entwicklung der Reglementierung von 10 MEM-Berufen im Kontext von Bildungsreformen und dem Wandel in der Arbeitswelt: Eine Kurzstudie im Auftrag von LIBS: Eine Kurzstudie im Auftrag von LIBS Industrielle Berufslehren Schweiz, Baden

    OpenAIRE

    Egg, Maria Esther; Renold, Ursula

    2015-01-01

    Im Auftrag der LIBS Industrielle Berufslehren Schweiz, hat die KOF die Entwicklung von 10 MEM1-Berufsbildern seit dem ersten Berufsbildungsgesetz dargestellt und diese eingebettet in eine kurze Zusammenfassung der wichtigsten Etappenschritte des Schweizer Berufsbildungssystems.

  2. Investigation of Ti-Fe-Co bulk alloys with high strength and enhanced ductility

    International Nuclear Information System (INIS)

    Louzguine-Luzgin, Dmitri V.; Louzguina-Luzgina, Larissa V.; Kato, Hidemi; Inoue, Akihisa

    2005-01-01

    High-strength Ti-Fe-Co alloys were produced in the shape of arc-melted ingots with the dimensions of about 20-25mm in diameter and 7-10mm in height. The structure of the Ti-Fe-Co alloys (at Fe/Co ratio >1) studied by X-ray diffractometry and scanning electron microscopy consisted of an ordered Pm3-bar m Ti(FeCo) compound and a disordered body-centered cubic Im3-bar m β-Ti solid solution. The optimization of the Ti-Fe-Co alloy composition is performed from the viewpoint of both high strength and ductility. The strongest Ti-Fe-Co alloys have a hypereutectic structure and exhibit a high strength of about 2000MPa and a plastic deformation of 15%. The high strength and ductility values can be achieved without using the injection mould casting or rapid solidification procedure. The deformation behavior and the fractography of Ti-Fe-Co alloys are studied in detail

  3. Silumins alloy crystallization

    Directory of Open Access Journals (Sweden)

    S. Pietrowski

    2009-07-01

    Full Text Available This paper presents the results of research, by ATD method, of hypo-, near- and hyperutectic silumins crystallization containing the following alloying additives: Mg, Ni, Cu, Cr, Mo, W, V. It has been shown that, depending on their concentration may crystallize pre-eutectic or eutectic multicomponent phases containing these alloy additives. It has been revealed that any subsequent crystallizable phase nucleate and grows near the liquid/former crystallized phase interface. In multiphases compound also falls the silicon, resulting in a reduction in its quantity and the fragmentation in the eutectic mixture. As a result, it gets a high hardness of silumins in terms of 110-220HB.

  4. Shape memory effect alloys

    International Nuclear Information System (INIS)

    Koshimizu, S.

    1992-01-01

    Although the pseudo- or super-elasticity phenomena and the shape memory effect were known since the 1940's, the enormous curiosity and the great interest to their practical applications emerged with the development of the NITINOL alloy (Nickel-Titanium Naval Ordance Laboratory) by the NASA during the 1960's. This fact marked the appearance of a new class of materials, popularly known as shape memory effect alloys (SMEA). The objective of this work is to present a state-of-the-art of the development and applications for the SMEA. (E.O.)

  5. Tungsten Alloy Outgassing Measurements

    CERN Document Server

    Rutherfoord, John P; Shaver, L

    1999-01-01

    Tungsten alloys have not seen extensive use in liquid argon calorimeters so far. Because the manufacturing process for tungsten is different from the more common metals used in liquid argon there is concern that tungsten could poison the argon thereby creating difficulties for precision calorimetry. In this paper we report measurements of outgassing from the tungsten alloy slugs proposed for use in the ATLAS FCal module and estimate limits on potential poisoning with reasonable assumptions. This estimate gives an upper limit poisoning rate of

  6. Corrosion resistance and microstructure of alloy 625 weld overlay on ASTM A516 grade 70

    Energy Technology Data Exchange (ETDEWEB)

    Moradi, Mohammad J. [Amirkabir Univ. of Technology, Tehran (Iran, Islamic Republic of). Petroleum Engineering Dept.; Ketabchi, Mostafa [Amirkabir Univ. of Technology, Tehran (Iran, Islamic Republic of). Mining and Metallurgical Engineering Dept.

    2016-02-01

    Nickel-based alloys are a crucial class of materials because of their excellent corrosion resistance. In the present study, single layer and two layers alloy 625 weld overlays were deposited by GTAW process on A516 grade 70 carbon steel. The dilution in terms of Fe, Ni, Mo and Nb content was calculated in 30 points of weld overlay. Microstructure observations showed that alloy 625 had austenitic structure with two types of Laves and NbC secondary phases. The uniform and pitting corrosion resistance of alloy 625 weld overlay as casted and as forged were evaluated in accordance with ASTM G48-2011 standard at different temperatures to determine the weight loss and critical pitting temperature. For achieving a better comparison, samples from alloy 625 as casted and as forged were tested under the same conditions. The results point out that single layer alloy 625 weld overlay is not suitable for chloride containing environments, two layers alloy 625 weld overlay and alloy 625 as casted have acceptable corrosion resistance and almost the same critical pitting temperature. Alloy 625 as forged has the best corrosion resistance and the highest critical pitting temperature among all test specimens. Also, the corrosion behavior was evaluated in accordance with ASTM G28 standard. The corrosion rate of single layer weld overlay was unacceptable. The average corrosion rate of two layers weld overlay and in casted condition were 35.82 and 33.01 mpy, respectively. [German] Nickellegierungen sind aufgrund ihres exzellenten Korrosionswiderstandes eine bedeutende Werkstoffklasse. In der diesem Beitrag zugrunde liegenden Studie wurden mittels WIG-Schweissens ein- und zweilagige Schweissplattierungen auf den Kohlenstoffstahl A516 (Grade 70) aufgebracht. Die Vermischung in Form des Fe-, Ni-, Mo- und Nb-Gehaltes wurde an 30 Punkten der Schweissplattierungen berechnet. Die mikrostrukturellen Untersuchungen ergaben, dass die Legierung 625 eine austenitische Struktur mit zwei Arten von

  7. Galvanic corrosion in odontological alloys

    International Nuclear Information System (INIS)

    Riesgo, O.; Bianchi, G.L.; Duffo, G.S.

    1993-01-01

    Galvanic corrosion can occur when different alloys are placed in direct contact within the oral cavity or within tissues. Concern has been expressed associated with the coupling of selected restorative materials as well as implant material with various alloys used for restorative procedures. This could be critical if the crown or bridge had subgingival finish line with a metallic zone in contact with the tissue, and the implant was made in titanium alloy. The present work shows the results of galvanic coupling studies done on implants of titanium alloy connected to nickel-chromium and cobalt-chromium alloys. (Author)

  8. Borated aluminum alloy manufacturing technology

    International Nuclear Information System (INIS)

    Shimojo, Jun; Taniuchi, Hiroaki; Kajihara, Katsura; Aruga, Yasuhiro

    2003-01-01

    Borated aluminum alloy is used as the basket material of cask because of its light weight, thermal conductivity and superior neutron absorbing abilities. Kobe Steel has developed a unique manufacturing process for borated aluminum alloy using a vacuum induction melting method. In this process, aluminum alloy is melted and agitated at higher temperatures than common aluminum alloy fabrication methods. It is then cast into a mold in a vacuum atmosphere. The result is a high quality aluminum alloy which has a uniform boron distribution and no impurities. (author)

  9. Fracture of Shape Memory Alloys

    OpenAIRE

    Miyazaki, Shuichi; Otsuka, Kazuhiro

    1981-01-01

    The initiation and the propagation of cracks during both quenching and deformation in polycrystalline Cu-Al-Ni alloys have been investigated under various conditions. The fracture surfaces of Ti-Ni and Cu-Al-Ni alloys were also observed by a scanning electron microscope. From these results, it was concluded that the brittleness of Cu-Al-Ni alloy and other β phase alloys are due to large elastic anisotropy and large grain sizes, while that the large ductility in Ti-Ni alloy being due to the sm...

  10. Synthesis and DNA binding properties of 1-(3-aminopropyl)-imidazole-containing triamide f-Im*PyIm: a novel diamino polyamide designed to target 5'-ACGCGT-3'.

    Science.gov (United States)

    Satam, Vijay; Babu, Balaji; Porte, Alexander; Savagian, Mia; Lee, Megan; Smeltzer, Thomas; Liu, Yang; Ramos, Joseph; Wilson, W David; Lin, Shicai; Kiakos, Kostantinos; Hartley, John A; Lee, Moses

    2012-09-15

    A novel diamino/dicationic polyamide f-Im(*)PyIm (5) that contains an orthogonally positioned aminopropyl chain on an imidazole (Im(*)) moiety was designed to target 5'-ACGCGT-3'. The DNA binding properties of the diamino polyamide 5, determined by CD, ΔT(M), DNase I footprinting, SPR, and ITC studies, were compared with those of its monoamino/monocationic counterpart f-ImPyIm (1) and its diamino/dicationic isomer f-ImPy(*)Im (2), which has the aminopropyl group attached to the central pyrrole unit (Py(*)). The results gave evidence for the minor groove binding and selectivity of polyamide 5 for the cognate sequence 5'-ACGCGT-3', and with strong affinity (K(eq)=2.3×10(7) M(-1)). However, the binding affinities varied according to the order: f-ImPy(*)Im (2)>f-ImPyIm (1)≥f-Im(*)PyIm (5) confirming that the second amino group can improve affinity, but its position within the polyamide can affect affinity. Copyright © 2012 Elsevier Ltd. All rights reserved.

  11. Aktuelle Tendenzen im computerunterstützten (Fach- Fremdsprachenunterricht

    Directory of Open Access Journals (Sweden)

    Pawel Szerszeń

    2015-03-01

    Full Text Available Die heutigen Entwicklungen im Bereich der Kommunikations-und Informationstechnologien tragen u.a. dazu bei,dass wir immer wieder mit neuen E-Learning-Angeboten im (Fach-Fremdsprachenunterricht konfrontiert werden. Diese Tatsa-che stellt u.a. die FremdsprachendidaktikerInnen vor neue Herausforderungen, für die eine kritische Reflexion über die didakti-sche Effizienz von E-Learning-Produkten Vorrang hat. Für eine solche didaktische Reflexion muss jedoch zunächst geklärt wer-den, welche Haupttypen von E-Learning-Produkten bestehen. Das Hauptziel des vorliegenden Beitrags ist somit der Versuch, diezurzeit bestehenden Haupttypen zu erfassen, zu kategorisieren sowie mit einigen Beispielen zu veranschaulichen wie auch aufinteressante Features ausgewählter Lernplattformen/Lernprogramme und auf einige neue E-Learning-Tendenzen hinzuweisen.Dieser Überblick stellt eine nötige und geeignete Grundlage für eine zukünftig mögliche Effizienzreflexion und-diskussion vordem Hintergrund möglicher Produktvergleiche dar

  12. Medienkompetenz multiplizieren? Entwicklung eines Multiplikator/-innenkonzepts im Lehramtsstudium

    Directory of Open Access Journals (Sweden)

    Antje Müller

    2017-02-01

    Full Text Available Zur Förderung von Medienkompetenz und medienpädagogischer Kompetenz in der universitären Lehramtsausbildung wurde an der Justus-Liebig-Universität Gießen ein Lehrprojekt initiiert, das an der aktuellen technologischen Ausstattung von deutschen Schulen ansetzt. Als Zugang wurde die Technologie der interaktiven Whitebords gewählt, um gegenwärtige Entwicklungen der Digitalisierung von Unterrichtsräumen zu thematisieren und dabei ausgewählte Aspekte von Medienkompetenz zu fördern. In dem Projekt haben verschiedene Einrichtungen der Universität und der Lehrerbildung kooperiert, um eine Multiplikator/-innenschulung für Studierende zu erarbeiten und zu etablieren. Es wurde eine 28-stündige Qualifizierungsreihe entwickelt, die sich aus modularisierten Workshops zur medientechnischen und -didaktischen Auseinandersetzung mit interaktiven Whiteboards, Elementen der Tutor/-innenausbildung sowie der Erarbeitung eines eigenen Unterrichtsentwurfes zusammensetzt. In dem Artikel werden die entwickelten Module vorgestellt und bewertet, inwieweit sie den von Herzig, Aßmann und Klar (2014 formulierten Zielvorstellungen zur Medienkompetenzförderung für das Lehramtsstudium entsprechen. Im Abgleich mit diesen Zielvorstellungen werden Entwicklungspotentiale des Konzepts identifiziert. Darüber hinaus fliessen Ergebnisse der praktischen Durchführung in Optimierungsvorschläge zur Steigerung der Nachhaltigkeit und Qualität der didaktischen Kompetenzen zum Einsatz von interaktiven Whiteboards in der Lehramtsausbildung – und darüber vermittelt im Schulunterricht – ein.

  13. Integrated municipal wind power concepts; Windenergienutzung im staedtischen Verbund

    Energy Technology Data Exchange (ETDEWEB)

    Kolbert, D.; Richert, F. [Ventis Energietechnik GmbH, Braunschweig (Germany)

    1998-06-01

    The role of wind power in the industrial sector currently depends very much on its technical and economic integrability in existing conventional supply structures. The most important questions in this context relate to capacity effects, adapted operating methods of conventional power suppliers, and, most important of all, operational energy production costs. In some regions alternative energy supply concepts are not yet or not sufficiently available. However, these will nevertheless offer ways of installing energy systems with a large renewable segment. The chances of bringing such projects to fruition depend for one thing on the climate, which may either stimulate or deter from development work on renewables (wind power, solar energy), and for another, often in apparent opposition to the former, on the oftentimes poorly developed infrastructure and economic strength of the region in question. [Deutsch] Die Bedeutung der Windenergienutzung im industrialisierten Bereich ist derzeit verknuepft mit deren technischen und oekonomischen Integrationsfaehigkeit in bestehende, konventionelle Versorgungsstrukturen. Im Vordergrund steht hierbei die Klaerung der Fragestellungen nach Kapazitaetseffekten, angepassten Betriebsweisen konventioneller Stromerzeuger und, in erster Linie, betriebswirtschaftlichen Energieerzeugungskosten. Derzeit bieten die Regionen, in denen eine anderweitige Versorgung noch nicht oder in nicht ausreichendem Masse existieren Moeglichkeiten zur Installation von Energiesystemen mit hoher regenerativer Durchdringung. Fuer die Realisation solcher Projekte stehen sich haeufig die klimatischen Bedingungen, die einerseits z.T. die Ursache fuer den geringen Entwicklungsstand sind, andererseits aber auch guenstige Voraussetzungen fuer die Nutzung regenerativer Energien (Wind, Sonne) bieten, der meist schlechten Infrastruktur und der geringen Wirtschaftskraft gegenueber. (orig./MSK)

  14. Anmerkungen zur Aufrichtigkeit im russischen Autorenkino der 2010er

    Directory of Open Access Journals (Sweden)

    Irina Souch

    2017-06-01

    Full Text Available Obwohl der Begriff der Aufrichtigkeit seit längerer Zeit in der westlichen Filmtheorie mit Bezug auf einen bestimmten Regiestil verwendet worden ist, manifestiert sich dieser Trend in Russland erst seit Kurzem. Der Essay beginnt mit einer Betrachtung der diskursiven Anwendungen des Konzepts von Aufrichtigkeit zu, um sich anschließend den Filmen dreier junger russischer Regisseurinnen anzunähern: Oksana Byčkovas Eshche odin god / Another Year (2014, Nigina Sajfullaevas Kak menja zovut/ Sag mir, wer ich bin (2014, sowie Natalija Meščaninovas Kombinat „Nadežda“ / Fabrik der Hoffnung (2014. Obwohl sie der sogenannten neuen Welle des Autorenkinos („novaja režisserskaja volna“ zugeordnet werden, fechten die Positionen, die diese Regisseurinnen gegenüber ihren Vorgängern, aber auch ihren Zeitgenossen einnehmen, sowohl in Russland als auch dem Westen eine einfache Zuordnung an. Die Filme bieten einen Einblick in das Anliegen der Regisseurinnen, die gesellschaftlichen und emotionalen Sorgen ihrer Generation auf eine ehrliche und realistische Art und Weise auszudrücken. Eine sorgfältige Untersuchung unterstreicht die unterschiedlich verwendeten, aber dennoch gemeinsamen stilistischen, narrativen und thematischen Elemente, die sie im Film einsetzen. Im Laufe der Untersuchungen begegnet die Aufrichtigkeit nicht nur als diskursives Phänomen, sondern auch als eine vielseitige kulturelle Praxis. Die Mittel, mit denen die einzelnen Filme versuchen bei den Zuschauern eine emotionale Reaktion hervorzurufen, berechtigen die Einordnung einer solchen ästhetischen Taktik als aufrichtig und ehrlich.

  15. Utility of the ImPACT test with deaf adolescents.

    Science.gov (United States)

    Reesman, Jennifer; Pineda, Jill; Carver, Jenny; Brice, Patrick J; Zabel, T Andrew; Schatz, Philip

    2016-02-01

    The goals of the study included empirical examination of the utility of the Immediate and Post-Concussion Assessment and Cognitive Testing (ImPACT) test with adolescents who are deaf or hard-of-hearing and to investigate patterns of performance at baseline that may arise in the assessment of this population. Baseline assessment of student-athletes has been conducted on a widespread scale with focus on performance of typically developing student-athletes and some clinical groups, though to date no studies have examined adolescents who are deaf or hard-of-hearing. Retrospective and de-identified ImPACT baseline test used with deaf and hard-of-hearing high-school student-athletes (N = 143; 66% male, mean age = 16.11) was examined. Review indicated significant differences in some composite scores between the deaf and hard-of-hearing group and hearing normative comparisons. A possible marker of task misunderstanding was identified to occur more frequently within the deaf and hard-of-hearing sample (13% in deaf sample vs. .31% in hearing sample). Results may provide support for the consideration and use of additional measures to ensure comprehension of task demands when considering this tool for use with deaf and hard-of-hearing adolescents.

  16. International Conference on Informatics and Management Science (IMS)

    CERN Document Server

    Informatics and Management Science III

    2013-01-01

    The International Conference on Informatics and Management Science (IMS) 2012 will be held on November 16-19, 2012, in Chongqing, China, which is organized by Chongqing Normal University, Chongqing University, Shanghai Jiao Tong University, Nanyang Technological University, University of Michigan, Chongqing University of Arts and Sciences, and sponsored by National Natural Science Foundation of China (NSFC). The objective of IMS 2012 is to facilitate an exchange of information on best practices for the latest research advances in a range of areas. Informatics and Management Science contains over 600 contributions to suggest and inspire solutions and methods drawing from multiple disciplines including: ·         Computer Science ·         Communications and Electrical Engineering ·         Management Science ·         Service Science ·         Business Intelligence

  17. International Conference on Informatics and Management Science (IMS) 2012

    CERN Document Server

    Informatics and Management Science VI

    2013-01-01

    The International Conference on Informatics and Management Science (IMS) 2012 will be held on November 16-19, 2012, in Chongqing, China, which is organized by Chongqing Normal University, Chongqing University, Shanghai Jiao Tong University, Nanyang Technological University, University of Michigan, Chongqing University of Arts and Sciences, and sponsored by National Natural Science Foundation of China (NSFC). The objective of IMS 2012 is to facilitate an exchange of information on best practices for the latest research advances in a range of areas. Informatics and Management Science contains over 600 contributions to suggest and inspire solutions and methods drawing from multiple disciplines including: ·         Computer Science ·         Communications and Electrical Engineering ·         Management Science ·         Service Science ·         Business Intelligence

  18. High strength ferritic alloy

    International Nuclear Information System (INIS)

    1977-01-01

    A high strength ferritic steel is specified in which the major alloying elements are chromium and molybdenum, with smaller quantities of niobium, vanadium, silicon, manganese and carbon. The maximum swelling is specified for various irradiation conditions. Rupture strength is also specified. (U.K.)

  19. Ferromagnetic bulk glassy alloys

    International Nuclear Information System (INIS)

    Inoue, Akihisa; Makino, Akihiro; Mizushima, Takao

    2000-01-01

    This paper deals with the review on the formation, thermal stability and magnetic properties of the Fe-based bulk glassy alloys in as-cast bulk and melt-spun ribbon forms. A large supercooled liquid region over 50 K before crystallization was obtained in Fe-(Al, Ga)-(P, C, B, Si), Fe-(Cr, Mo, Nb)-(Al, Ga)-(P, C, B) and (Fe, Co, Ni)-Zr-M-B (M=Ti, Hf, V, Nb, Ta, Cr, Mo and W) systems and bulk glassy alloys were produced in a thickness range below 2 mm for the Fe-(Al, Ga)-(P, C, B, Si) system and 6 mm for the Fe-Co-(Zr, Nb, Ta)-(Mo, W)-B system by copper-mold casting. The ring-shaped glassy Fe-(Al, Ga)-(P, C, B, Si) alloys exhibit much better soft magnetic properties as compared with the ring-shaped alloy made from the melt-spun ribbon because of the formation of the unique domain structure. The good combination of high glass-forming ability and good soft magnetic properties indicates the possibility of future development as a new bulk glassy magnetic material

  20. Titanium and zirconium alloys

    International Nuclear Information System (INIS)

    Pinard Legry, G.

    1994-01-01

    Titanium and zirconium pure and base alloys are protected by an oxide film with anionic vacancies which gives a very good resistance to corrosion in oxidizing medium, in some ph ranges. Results of pitting and crevice corrosion are given for Cl - , Br - , I - ions concentration with temperature and ph dependence, also with oxygenated ions effect. (A.B.). 32 refs., 6 figs., 3 tabs

  1. [Christian Westerhoff. Zwangsarbeit im Ersten Weltkrieg. Deutsche Arbeitskräftepolitik im besetzten Polen und Litauen 1914-1918, Tilman Plath.Zwischen Schonung und Menschenjagden. Die Arbeitseinsatzpolitik in den baltischen Generalbezirken des Reich

    Index Scriptorium Estoniae

    Hiio, Toomas, 1965-

    2014-01-01

    Arvustus: Westerhoff, Christian. Zwangsarbeit im Ersten Weltkrieg. Deutsche Arbeitskräftepolitik im besetzten Polen und Litauen 1914-1918 (Studien zur historischen Migrationsforschung, 25). Verlag Ferdinand Schöningh. Padeborn 2011

  2. Magnesium secondary alloys: Alloy design for magnesium alloys with improved tolerance limits against impurities

    Energy Technology Data Exchange (ETDEWEB)

    Blawert, C., E-mail: carsten.blawert@gkss.d [GKSS Forschungszentrum Geesthacht GmbH, Max-Planck-Str. 1, 21502 Geesthacht (Germany); Fechner, D.; Hoeche, D.; Heitmann, V.; Dietzel, W.; Kainer, K.U. [GKSS Forschungszentrum Geesthacht GmbH, Max-Planck-Str. 1, 21502 Geesthacht (Germany); Zivanovic, P.; Scharf, C.; Ditze, A.; Groebner, J.; Schmid-Fetzer, R. [TU Clausthal, Institut fuer Metallurgie, Robert-Koch-Str. 42, 38678 Clausthal-Zellerfeld (Germany)

    2010-07-15

    The development of secondary magnesium alloys requires a completely different concept compared with standard alloys which obtain their corrosion resistance by reducing the levels of impurities below certain alloy and process depending limits. The present approach suitable for Mg-Al based cast and wrought alloys uses a new concept replacing the {beta}-phase by {tau}-phase, which is able to incorporate more impurities while being electro-chemically less detrimental to the matrix. The overall experimental effort correlating composition, microstructure and corrosion resistance was reduced by using thermodynamic calculations to optimise the alloy composition. The outcome is a new, more impurity tolerant alloy class with a composition between the standard AZ and ZC systems having sufficient ductility and corrosion properties comparable to the high purity standard alloys.

  3. World-wide developments in motor vehicle inspection/maintenance (I/M) programs

    Energy Technology Data Exchange (ETDEWEB)

    Klausmeier, R. [Consulting Inc., Austin, TX (United States); Kishan, S. [Radian Corporation, Austin, TX (United States)

    1995-12-31

    Motor vehicles contribute much to urban air pollution. As a result, most governments have enacted emission standards that significantly lower pollutant emission levels from new motor vehicles. For example, vehicles built in the United States emit 95 % fewer pollutants than uncontrolled vehicles when they are new. However, studies indicate that proper maintenance is needed to obtain the full benefit of vehicle emission controls. Furthermore, there is evidence that a significant percentage of the vehicle fleet is not properly maintained. This has led to the creation of motor vehicle Inspection/Maintenance (I/M) Programs. I/M programs inspect vehicles for indications that they are emitting excessive quantities of pollutants. Vehicles that fail the inspection must be repaired in order to comply with program requirements. The first I/M programs were implemented in the United States in the early 1970s. With substantial urging from the federal government, most of the U.S. states with severe air pollution problems have implemented I/M programs. Recently, with the passage of the U.S. Clean Air Act Amendments of 1990, many states have been required to significantly upgrade the performance and coverage of their I/M programs. I/M programs also have been implemented in Europe and recently in Asia. This presentation reviews developments in I/M programs for light-duty gasoline powered vehicles. Developments in I/M programs for diesel powered vehicles are briefly described. (author)

  4. A flicker noise/IM3 cancellation technique for active mixer using negative impedance

    NARCIS (Netherlands)

    Cheng, W.; Annema, Anne J.; Wienk, Gerhardus J.M.; Nauta, Bram

    2013-01-01

    Abstract—This paper presents an approach to simultaneously cancel flicker noise and IM3 in Gilbert-type mixers, utilizing negative impedances. For proof of concept, two prototype double-balanced mixers in 0.16- m CMOS are fabricated. The first demonstration mixer chip was optimized for full IM3

  5. Real-time resource availability signalling in IMS-based networks

    NARCIS (Netherlands)

    Ozcelebi, T.; Radovanovic, I.; Lukkien, J.J.

    2007-01-01

    The emerging converged IP multimedia subsystem (IMS) allows the use of unlicensed, nondedicated and nondeterministic computer access networks for delivering IP multimedia services. To provide end-to-end quality-of-service (QoS) over such networks combined with the IMS core network, for resource

  6. IMS Intra- and Inter Domain End-to-End Resilience Analysis

    DEFF Research Database (Denmark)

    Kamyod, Chayapol; Nielsen, Rasmus Hjorth; Prasad, Neeli R.

    2013-01-01

    This paper evaluated resilience of the reference IMS based network topology in operation through the keys reliability parameters via OPNET. The reliability behaviors of communication within similar and across registered home IMS domains were simulated and compared. Besides, the reliability effects...

  7. Strukturwandel, Verbandsabstinenz, Tarifflucht : zur Lage der Unternehmen und Arbeitgeberverbände im ostdeutschen verarbeitenden Gewerbe

    OpenAIRE

    Ettl, Wilfried; Heikenroth, André

    1996-01-01

    "Im Kontext der am Start der ostdeutschen Transformation vorgenommenen wirtschaftspolitischen Richtungsentscheidungen erwies sich die flächentarifvertragliche Normierung von Arbeits- und Entlohnungsbedingungen für die Arbeitgeberverbände als organisationspolitisch dysfunktional, weil sie der Differenzierung betriebswirtschaftlicher Kostenbedingungen und Interessenlagen im rasanten Strukturwandel nicht gerecht werden konnte. Anhand der Ergebnisse einer Befragung ostdeutscher ...

  8. NDIA 2018 IM and EM Technology Symposium: Innovative Insensitive Munition Solutions for Enhanced Warfighter Effectiveness

    Science.gov (United States)

    2018-04-26

    2018 IM & EM TECHNOLOGY SYMPOSIUM INNOVATIVE INSENSITIVE MUNITION SOLUTIONS FOR ENHANCED WARFIGHTER EFFECTIVENESS April 23 – 26, 2018 Doubletree by...IM & EM TECHNOLOGY SYMPOSIUM On behalf of the Insensitive Munitions and Energetic Materials Committee and our MSIAC partner, I would like to...welcome you to the 2018 Insensitive Munitions and Energetic Materials Technology Symposium. This international gathering of the top chemists, system

  9. World-wide developments in motor vehicle inspection/maintenance (I/M) programs

    Energy Technology Data Exchange (ETDEWEB)

    Klausmeier, R [Consulting Inc., Austin, TX (United States); Kishan, S [Radian Corporation, Austin, TX (United States)

    1996-12-31

    Motor vehicles contribute much to urban air pollution. As a result, most governments have enacted emission standards that significantly lower pollutant emission levels from new motor vehicles. For example, vehicles built in the United States emit 95 % fewer pollutants than uncontrolled vehicles when they are new. However, studies indicate that proper maintenance is needed to obtain the full benefit of vehicle emission controls. Furthermore, there is evidence that a significant percentage of the vehicle fleet is not properly maintained. This has led to the creation of motor vehicle Inspection/Maintenance (I/M) Programs. I/M programs inspect vehicles for indications that they are emitting excessive quantities of pollutants. Vehicles that fail the inspection must be repaired in order to comply with program requirements. The first I/M programs were implemented in the United States in the early 1970s. With substantial urging from the federal government, most of the U.S. states with severe air pollution problems have implemented I/M programs. Recently, with the passage of the U.S. Clean Air Act Amendments of 1990, many states have been required to significantly upgrade the performance and coverage of their I/M programs. I/M programs also have been implemented in Europe and recently in Asia. This presentation reviews developments in I/M programs for light-duty gasoline powered vehicles. Developments in I/M programs for diesel powered vehicles are briefly described. (author)

  10. Calibración de imágenes de radares meteorológicos

    Directory of Open Access Journals (Sweden)

    Virgilio Santander Socorras Quintero

    2014-04-01

    Full Text Available En este documento se ilustran las técnicas de fusión de imágenes para complementar y calibrar la información meteorológica presente en imágenes de radares terrestres con el uso de imágenes satelitales meteorológicas. Para realizar la calibración de las imágenes de radares terrestres se implementó un método de fusión de imágenes basado en la herramienta matemática transformada wavelet discreta. Ya que existe una familia de wavelets, es necesario determinar cuál wavelet ofrece el mejor resultado; para esto se determina la correlación existente entre los resultados de fusión de diferentes wavelets y las imágenes uti-lizadas en cada fusión. Se define una metodología para selección de umbral global de segmentación y una metodología para realizar la calibración de las imágenes de radares terrestres. Siguiendo la metodología de calibración de imágenes, se generan algunos resultados y se muestran sus ventajas.

  11. Computer-Aided Teaching Using MATLAB/Simulink for Enhancing an IM Course With Laboratory Tests

    Science.gov (United States)

    Bentounsi, A.; Djeghloud, H.; Benalla, H.; Birem, T.; Amiar, H.

    2011-01-01

    This paper describes an automatic procedure using MATLAB software to plot the circle diagram for two induction motors (IMs), with wound and squirrel-cage rotors, from no-load and blocked-rotor tests. The advantage of this approach is that it avoids the need for a direct load test in predetermining the IM characteristics under reduced power.…

  12. A Unidimensional Instrument for Measuring Internal Marketing Concept in the Higher Education Sector: IM-11 Scale

    Science.gov (United States)

    Yildiz, Suleyman Murat; Kara, Ali

    2017-01-01

    Purpose: Although the existing internal marketing (IM) scales include various scale items to measure employee motivation, they fall short of incorporating the needs and expectations of service sector employees. Hence, the purpose of this study is to present a practical instrument designed to measure the IM construct in the higher education sector.…

  13. Hardening of niobium alloys at precrystallization annealing

    International Nuclear Information System (INIS)

    Vasil'eva, E.V.; Pustovalov, V.A.

    1989-01-01

    Niobium base alloys were investigated. It is shown that precrystallization annealing of niobium-molybdenum, niobium-vanadium and niobium-zirconium alloys elevates much more sufficiently their resistance to microplastic strains, than to macroplastic strains. Hardening effect differs sufficiently for different alloys. The maximal hardening is observed for niobium-vanadium alloys, the minimal one - for niobium-zirconium alloys

  14. Grindability of dental magnetic alloys.

    Science.gov (United States)

    Hayashi, Eisei; Kikuchi, Masafumi; Okuno, Osamu; Kimura, Kohei

    2005-06-01

    In this study, the grindability of cast magnetic alloys (Fe-Pt-Nb magnetic alloy and magnetic stainless steel) was evaluated and compared with that of conventional dental casting alloys (Ag-Pd-Au alloy, Type 4 gold alloy, and cobalt-chromium alloy). Grindability was evaluated in terms of grinding rate (i.e., volume of metal removed per minute) and grinding ratio (i.e., volume ratio of metal removed compared to wheel material lost). Solution treated Fe-Pt-Nb magnetic alloy had a significantly higher grinding rate than the aged one at a grinding speed of 750-1500 m x min(-1). At 500 m x min(-1), there were no significant differences in grinding rate between solution treated and aged Fe-Pt-Nb magnetic alloys. At a lower speed of 500 m x min(-1) or 750 m x min(-1), it was found that the grinding rates of aged Fe-Pt-Nb magnetic alloy and stainless steel were higher than those of conventional casting alloys.

  15. Advanced ordered intermetallic alloy deployment

    Energy Technology Data Exchange (ETDEWEB)

    Liu, C.T.; Maziasz, P.J.; Easton, D.S. [Oak Ridge National Lab., TN (United States)

    1997-04-01

    The need for high-strength, high-temperature, and light-weight materials for structural applications has generated a great deal of interest in ordered intermetallic alloys, particularly in {gamma}-based titanium aluminides {gamma}-based TiAl alloys offer an attractive mix of low density ({approximately}4g/cm{sup 3}), good creep resistance, and high-temperature strength and oxidation resistance. For rotating or high-speed components. TiAl also has a high damping coefficient which minimizes vibrations and noise. These alloys generally contain two phases. {alpha}{sub 2} (DO{sub 19} structure) and {gamma} (L 1{sub 0}), at temperatures below 1120{degrees}C, the euticoid temperature. The mechanical properties of TiAl-based alloys are sensitive to both alloy compositions and microstructure. Depending on heat-treatment and thermomechanical processing, microstructures with near equiaxed {gamma}, a duplex structure (a mix of the {gamma} and {alpha}{sub 2} phases) can be developed in TiAl alloys containing 45 to 50 at. % Al. The major concern for structural use of TiAl alloys is their low ductility and poor fracture resistance at ambient temperatures. The purpose of this project is to improve the fracture toughness of TiAl-based alloys by controlling alloy composition, microstructure and thermomechanical treatment. This work is expected to lead to the development of TiAl alloys with significantly improved fracture toughness and tensile ductility for structural use.

  16. Corrosion Fatigue Characteristics of 12Cr Alloy Steel in Na2SO4 Solution

    Science.gov (United States)

    Bae, D. H.; Cho, S. Y.

    In order to estimate reliability of 12Cr alloy steel using as the turbine blade material of the steam power plant, its corrosion fatigue characteristics in Na2SO4 solution considering its percentage and temperature that were determined from the polarization test results were investigated, and compared with the results in air. The corrosion characteristic of 12Cr alloy steel was remarkably susceptible in 12.7wt.% (IM) Na2SO4 solution, and its susceptibility increased with the solution temperature increase. The corrosion fatigue characteristics in 12.7wt.% Na2SO4 solution were similar to that of in air at 25°C. The crack growth rate was however increased with the temperature of solution increase. The reasons showing such results are due to the difference of the crack growth mechanism according to the electro-chemical activity of the corrosion factors.

  17. Interphase thermodynamic bond in heterogeneous alloys: effects on alloy properties

    International Nuclear Information System (INIS)

    Savchenko, A.M.; Konovalov, Yu.V.; Yuferov, O.I.

    2005-01-01

    Inconsistency between a conventional thermodynamic description of alloys as a mechanical mixture of phases and a real alloys state as a common thermodynamic system in which there is a complicated physical-chemical phases interaction has been considered. It is supposed that in heterogeneous alloys (eutectic ones, for instance), so called interphase thermodynamic bond can become apparent due to a partial electron levels splitting under phase interaction. Thermodynamic description of phase equilibrium in alloys is proposed taking into account a thermodynamic bond for the system with phase diagram of eutectic type, and methods of the value of this bond estimation are presented. Experimental evidence (Al-Cu-Si, Al-Si-Mg-Cu, U-Mo + Al) of the effect of interphase thermodynamic bond on temperature and enthalpy of melting of alloys are produced as well as possibility of its effects on alloys electrical conduction, strength, heat and corrosion resistance is substantiated theoretically [ru

  18. Long-term liablities of coal mining; Ewigkeitslasten im Kohlenbergbau

    Energy Technology Data Exchange (ETDEWEB)

    Frenz, Walter (ed.) [GDMB Gesellschaft der Metallurgen und Bergleute e.V., Clausthal-Zellerfeld (Germany)

    2016-07-01

    The closer the end of coal mining in 2018, the more the issue of groundwater re-emergence in the Ruhr area is also being considered. This is especially the case because currently the subject of restitution and liability issues in the area of contaminated sites of the peaceful use of nuclear energy is discussed. In addition, the companies concerned lost considerable value on the stock market. For this reason, the question of whether the financial provisions in the created foundation are sufficient to shoulder the expected responsibilities and measures also arises with regard to coal mining. The question is which measures are to be taken and where damages can occur. Additional impulses are given by the Meggen judgment of the BVerwG of 18.12.2014, which interpreted the responsibility of the mining companies very widely. In the Rhineland, an earthquake hit 2.4 on 22.12.2015 - probably due to a rise in groundwater around the closed opencast mine Bergheim. All these questions are included in the colloquium on economics and environmental law on 26 January 2016. This also includes experiences and problems from other federal states such as Brandenburg and Saxony. [German] Je naeher das Ende des Steinkohlenbergbaus 2018 rueckt, desto eher geraet auch die Frage des Grundwasserwiederanstiegs im Ruhrgebiet ins Blickfeld. Das gilt zumal deshalb, weil aktuell ueber Rueckstellung und Haftungsfragen im Bereich der Altlasten der friedlichen Nutzung der Kernenergie diskutiert wird. Zudem verloren die betroffenen Gesellschaften an der Boerse erheblich an Wert. Daher stellt sich auch in Bezug auf den Steinkohlenbergbau die Frage, ob die finanziellen Rueckstellungen in der geschaffenen Stiftung ausreichen, um die zu erwartenden Verantwortlichkeiten und Massnahmen schultern zu koennen. Vorgelagert ist die Frage, welche Massnahmen zu ergreifen sind und wo Schaeden auftreten koennen. Zusaetzliche Impulse bekommt diese Frage durch das Meggen-Urteil des BVerwG vom 18.12.2014, welches die

  19. Biomechanisch-kinemetrische Bewegungsanalyse und Ansätze zur Bewegungssteuerung für ein Training im Wellenreiten

    OpenAIRE

    Matschkur, Tina

    2008-01-01

    Neben der biomechanisch-kinemetrischen Bewegungsanalyse einzelner ausgewählter Techniken im Wellenreiten beschäftigt sich diese Dissertation auch ansatzweise im Rahmen einer elektromyographischen Fallstudie mit der muskulären Koordination bei der Bewegungsausführung im Surfen, um daraus Schlussfolgerungen für das Training im Wellenreiten treffen zu können. Ein geschichtlicher und wissenschaftlicher Überblick über das Wellenreiten leitet das Thema ein und macht somit auf die besondere Ausgangs...

  20. Filler metal alloy for welding cast nickel aluminide alloys

    Science.gov (United States)

    Santella, M.L.; Sikka, V.K.

    1998-03-10

    A filler metal alloy used as a filler for welding cast nickel aluminide alloys contains from about 15 to about 17 wt. % chromium, from about 4 to about 5 wt. % aluminum, equal to or less than about 1.5 wt. % molybdenum, from about 1 to about 4.5 wt. % zirconium, equal to or less than about 0.01 wt. % yttrium, equal to or less than about 0.01 wt. % boron and the balance nickel. The filler metal alloy is made by melting and casting techniques such as are melting the components of the filler metal alloy and cast in copper chill molds. 3 figs.

  1. ODE/IM correspondence and the Argyres-Douglas theory

    Science.gov (United States)

    Ito, Katsushi; Shu, Hongfei

    2017-08-01

    We study the quantum spectral curve of the Argyres-Douglas theories in the Nekrasov-Sahashvili limit of the Omega-background. Using the ODE/IM correspondence we investigate the quantum integrable model corresponding to the quantum spectral curve. We show that the models for the A 2 N -type theories are non-unitary coset models ( A 1)1 × ( A 1) L /( A 1) L+1 at the fractional level L=2/2N+1-2 , which appear in the study of the 4d/2d correspondence of N = 2 superconformal field theories. Based on the WKB analysis, we clarify the relation between the Y-functions and the quantum periods and study the exact Bohr-Sommerfeld quantization condition for the quantum periods. We also discuss the quantum spectral curves for the D and E type theories.

  2. Think tank in the desert sand; Ideenschmiede im Wuestensand

    Energy Technology Data Exchange (ETDEWEB)

    Ullrich, Sven

    2013-11-01

    The international architectural competition shows imaginative concepts for living in energy self-sufficient houses. A total of 109 student teams had applied. Only 19 were allowed to build their solar house in Irvine, California. In addition to architectural elements and an attractive design, the jury members also evaluate the technical concepts of the buildings. The winners came from Austria with their building ''Lisi''. [German] Der internationale Architekturwettbewerb zeigt ideenreiche Konzepte zum Wohnen in energieautarken Haeusern. Insgesamt 109 Studenten-Teams hatten sich beworben. Nur 19 durften ihr Solarhaus im kalifornischen Irvine aufbauen. Neben architektonischen Elementen und einem attraktiven Design bewerten die Jurymitglieder auch die Technikkonzepte der Gebaeude. Die Gewinner kamen aus Oesterreich mit ihrem Gebaeude ''Lisi''.

  3. Berechnung verkehrlicher Substitutionseffekte im Personenverkehr bei Online-Shopping

    Science.gov (United States)

    Nerlich, Mark R.; Schiffner, Felix; Vogt, Walter; Rauh, Jürgen; Breidenbach, Petra

    Für Güter des täglichen, mittelfristigen und langfristigen Bedarfs sowie für das Beispiel Baumarktartikel wird das Potenzial für Personenverkehrsaufwand von Einkaufsaktivtäten quantitativ abgeschätzt. Die entwickelten Algorithmen behandeln die einkaufsvorbereitende Information und den eigentlichen Einkauf, d.h. den Erwerb eines Gutes, separat. Informationsaktivitäten haben insbesondere bei höherwertigen Gütern einen hohen Stellenwert und damit auch verkehrliche Relevanz. Wie Berechnungen zeigen, spart Online-Shopping Informations- und Einkaufsverkehrsaufwand im Pkw-Verkehr ein. Die notwendigen Eingangsdaten wie differenzierte Informations- und Einkaufshäufigkeiten sowie verkehrliche Parameter zu Verkehrsmittelwahl, Entfernungen und Wegekopplungen wurden aus eigenen Erhebungen gewonnen.

  4. Disturbance observer based current controller for vector controlled IM drives

    DEFF Research Database (Denmark)

    Teodorescu, Remus; Dal, Mehmet

    2008-01-01

    induction motor (IM) drives. The control design, based on synchronously rotating d-q frame model of the machine, has a simple structure that combines the proportional portion of a conventional PI control and output of the observer. The observer is predicted to estimate the disturbances caused by parameters...... coupling effects and increase robustness against parameters change without requiring any other compensation strategies. The experimental implementation results are provided to demonstrate validity and performance of the proposed control scheme.......In order to increase the accuracy of the current control loop, usually, well known parameter compensation and/or cross decoupling techniques are employed for advanced ac drives. In this paper, instead of using these techniques an observer-based current controller is proposed for vector controlled...

  5. Single-molecule studies of the Im7 folding landscape.

    Science.gov (United States)

    Pugh, Sara D; Gell, Christopher; Smith, D Alastair; Radford, Sheena E; Brockwell, David J

    2010-04-23

    Under appropriate conditions, the four-helical Im7 (immunity protein 7) folds from an ensemble of unfolded conformers to a highly compact native state via an on-pathway intermediate. Here, we investigate the unfolded, intermediate, and native states populated during folding using diffusion single-pair fluorescence resonance energy transfer by measuring the efficiency of energy transfer (or proximity or P ratio) between pairs of fluorophores introduced into the side chains of cysteine residues placed in the center of helices 1 and 4, 1 and 3, or 2 and 4. We show that while the native states of each variant give rise to a single narrow distribution with high P values, the distributions of the intermediates trapped at equilibrium (denoted I(eqm)) are fitted by two Gaussian distributions. Modulation of the folding conditions from those that stabilize the intermediate to those that destabilize the intermediate enabled the distribution of lower P value to be assigned to the population of the unfolded ensemble in equilibrium with the intermediate state. The reduced stability of the I(eqm) variants allowed analysis of the effect of denaturant concentration on the compaction and breadth of the unfolded state ensemble to be quantified from 0 to 6 M urea. Significant compaction is observed as the concentration of urea is decreased in both the presence and absence of sodium sulfate, as previously reported for a variety of proteins. In the presence of Na(2)SO(4) in 0 M urea, the P value of the unfolded state ensemble approaches that of the native state. Concurrent with compaction, the ensemble displays increased peak width of P values, possibly reflecting a reduction in the rate of conformational exchange among iso-energetic unfolded, but compact conformations. The results provide new insights into the initial stages of folding of Im7 and suggest that the unfolded state is highly conformationally constrained at the outset of folding. (c) 2010 Elsevier Ltd. All rights reserved.

  6. Zur Palökologie der Euproopiden im Nordwestdeutschen Oberkarbon

    Directory of Open Access Journals (Sweden)

    S. Schultka

    2000-01-01

    Full Text Available Tierische Fossilien aus dem Westfal D des Piesbergs bei Osnabrück sind seit 1860 vereinzelt immer wieder beschrieben worden. Doch erst durch die Funde der letzten 30 Jahre zählt der Piesberg zu den bedeutendsten Fundorten terrestrischer Fauna im Karbon. Erstmals werden 45 stratifiziert aufgesammelte Individuen von Euproops untersucht. Einige Details der Morphologie sowie eine dichte Behaarung werden beschrieben. Auf der Basis dieser Merkmale sowie der Verteilung juveniler und adulter Individuen im geologischen Profil wird eine Deutung des Lebensraumes der Euproopiden versucht. Danach hielten sich die juvenilen Individuen dieser Tiergruppe als Laubstreubewohner in feuchten Spülsäumen flacher ruhiger Gewässer und Laubstreuhorizonten auf. Die adulten Formen lebten vornehmlich benthisch in ufernahen Gewässern und verließen wohl nur noch gelegentlich das Wasser. Since 1860 articulated fossils of terrestrial taxa have been described from lower Westfalian D sediments of the Piesberg section near Osnabrück (northwestern Germany. In this paper 45 individuals of the genus Euproops, sampled from particular levels in the profile, are reported on for the first time. Analysis of the fossil material reveals new morphological details – especially setae densely covering the ventral side – that, combined with the geological setting of the profile, gives novel insights into the palaeoenvironment and to the hypothesis of subaerial activity. Young individuals of Euproops may have been "litter dwellers" inhabiting forest-litter and partly decayed plant material that had washed ashore. By contrast, adults formed a principal component of the nearshore benthic fauna. They were able to leave the water, but only for short periods. This is proved by the occurence of adults and juveniles in different lithologies. doi:10.1002/mmng.20000030105

  7. Two phase titanium aluminide alloy

    Science.gov (United States)

    Deevi, Seetharama C.; Liu, C. T.

    2001-01-01

    A two-phase titanic aluminide alloy having a lamellar microstructure with little intercolony structures. The alloy can include fine particles such as boride particles at colony boundaries and/or grain boundary equiaxed structures. The alloy can include alloying additions such as .ltoreq.10 at % W, Nb and/or Mo. The alloy can be free of Cr, V, Mn, Cu and/or Ni and can include, in atomic %, 45 to 55% Ti, 40 to 50% Al, 1 to 5% Nb, 0.3 to 2% W, up to 1% Mo and 0.1 to 0.3% B. In weight %, the alloy can include 57 to 60% Ti, 30 to 32% Al, 4 to 9% Nb, up to 2% Mo, 2 to 8% W and 0.02 to 0.08% B.

  8. SINTERED REFRACTORY TUNGSTEN ALLOYS. Gesinterte hochschmelzende wolframlegierungen

    Energy Technology Data Exchange (ETDEWEB)

    Kieffer, R.; Sedlatschek, K.; Braun, H.

    1971-12-15

    Dependence of the melting point of the refractory metals on their positions in the periodic system - alloys of tungsten with other refractory metals - sintering of the alloys - processing of the alloys - technological properties.

  9. 78 FR 79498 - Notice Pursuant to The National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2013-12-30

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on November 22....C. Sec. 4301 et seq. (``the Act''), IMS Global Learning Consortium, Inc. (``IMS Global'') has filed..., Carson-Dellosa Publishing, Greensboro, NC; Data Recognition Group, Maple Grove, MN; Nelson Education Ltd...

  10. 78 FR 7456 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2013-02-01

    ... District, Selbyville, DE; learning.com , Portland, OR; State of Michigan Dept. of Education, Bureau of... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on December 28....C. 4301 et seq. (``the Act''), IMS Global Learning Consortium, Inc. (``IMS Global'') has filed...

  11. [Glanz und Elend - Mythos und Wirklichkeit der Herrenhäuser im Baltikum] / Karsten Brüggemann

    Index Scriptorium Estoniae

    Brüggemann, Karsten, 1965-

    2014-01-01

    Arvustus: Glanz und Elend - Mythos und Wirklichkeit der Herrenhäuser im Baltikum. Hrsg. von Ilse von zur Mühlen im Auftrag der Carl-Schirren-Gesellschaft e.V. und des Ostpreußischen Landesmuseums Lüneburg. Kunstverlag Josef Fink. Lindenberg im Allgäu 2012

  12. IMS Learning Design desde dentro. Una especificación para crear escenarios de aprendizaje online (parte I)

    NARCIS (Netherlands)

    Burgos, Daniel; Berbegal, Nidia; Griffiths, David; Tattersall, Colin; Koper, Rob

    2005-01-01

    IMS Learning Design, IMS LD de ahora en adelante (IMS, 2003), es una especificación centrada en formación online o e-learning y que permite modelar programaciones curriculares o lecciones presenciales de forma que puedan ser seguidas online, construyendo lo que se denomina Unidades de Aprendizaje

  13. Metastable superconducting alloys

    International Nuclear Information System (INIS)

    Johnson, W.L.

    1978-07-01

    The study of metastable metals and alloys has become one of the principal activities of specialists working in the field of superconducting materials. Metastable crystalline superconductors such as the A15-type materials have been given much attention. Non-crystalline superconductors were first studied over twenty years ago by Buckel and Hilsch using the technique of thin film evaporation on a cryogenic substrate. More recently, melt-quenching, sputtering, and ion implantation techniques have been employed to produce a variety of amorphous superconductors. The present article presents a brief review of experimental results and a survey of current work on these materials. The systematics of superconductivity in non-crystalline metals and alloys are described along with an analysis of the microscopic parameters which underlie the observed trends. The unique properties of these superconductors which arise from the high degree of structural disorder in the amorphous state are emphasized

  14. Rare earth metal alloy magnets

    International Nuclear Information System (INIS)

    Harris, I.R.; Evans, J.M.; Nyholm, P.S.

    1979-01-01

    This invention relates to rare earth metal alloy magnets and to methods for their production. The technique is based on the fact that rare earth metal alloys (for e.g. cerium or yttrium) which have been crumbled to form a powder by hydride formation and decomposition can be used for the fabrication of magnets without the disadvantages inherent in alloy particle size reduction by mechanical milling. (UK)

  15. Thermomechanical treatment of titanium alloys

    International Nuclear Information System (INIS)

    Khorev, A.K.

    1979-01-01

    The problems of the theory and practical application of thermomechanical treatment of titanium alloys are presented. On the basis of the systematic investigations developed are the methods of thermomechanical treatment of titanium alloys, established are the optimum procedures and produced are the bases of their industrial application with an account of alloy technological peculiarities and the procedure efficiency. It is found that those strengthening methods are more efficient at which the contribution of dispersion hardening prevails over the strengthening by phase hardening

  16. Alloy catalyst material

    DEFF Research Database (Denmark)

    2014-01-01

    The present invention relates to a novel alloy catalyst material for use in the synthesis of hydrogen peroxide from oxygen and hydrogen, or from oxygen and water. The present invention also relates to a cathode and an electrochemical cell comprising the novel catalyst material, and the process use...... of the novel catalyst material for synthesising hydrogen peroxide from oxygen and hydrogen, or from oxygen and water....

  17. Superplasticity of amorphous alloy

    International Nuclear Information System (INIS)

    Levin, Yu.B.; Likhachev, V.L.; Sen'kov, O.N.

    1988-01-01

    Results of mechanical tests of Co 57 Ni 10 Fe 5 Si 11 B 17 amorphous alloy are presented and the effect of crystallization, occurring during deformation process, on plastic low characteristics is investiagted. Superplasticity of amorphous tape is investigated. It is shown, that this effect occurs only when during deformation the crystallization takes place. Process model, based on the usage disclination concepts about glass nature, is suggested

  18. Shape memory alloy actuator

    Science.gov (United States)

    Varma, Venugopal K.

    2001-01-01

    An actuator for cycling between first and second positions includes a first shaped memory alloy (SMA) leg, a second SMA leg. At least one heating/cooling device is thermally connected to at least one of the legs, each heating/cooling device capable of simultaneously heating one leg while cooling the other leg. The heating/cooling devices can include thermoelectric and/or thermoionic elements.

  19. Nickel base alloys

    International Nuclear Information System (INIS)

    Gibson, R.C.; Korenko, M.K.

    1980-01-01

    The specified alloys consist of Ni, Cr and Fe as main constituents, and Mo, Nb, Si, Zr, Ti, Al, C and B as minor constituents. They are said to exhibit high weldability and long-time structural stability, as well as low swelling under nuclear radiation conditions, making them especially suitable for use as a duct material and control element cladding for sodium-cooled nuclear reactors. (U.K.)

  20. Aluminum alloy impact sparkling

    Directory of Open Access Journals (Sweden)

    M. Dudyk

    2008-08-01

    Full Text Available The cast machine parts are widely used in many branches of industry. A very important issue is gaining the appropriate knowledge relating to the application of castings in places of explosion risks including but not limited to mining, chemical industry and rescue works. A possibility of explosion risks occurrence following the impact sparkling of the cast metal parts is still not solved problem in scientific research. In relation to this issue, in this article, the results of the study are presented, and relating to the tendency to impact sparkling of the aluminium alloys used in machine building. On the grounds of the results obtained, it was demonstrated that the registered impact sparkles bunches of feathers from the analyzed alloys: AlSi7Mg, (AK7; AlSi9Mg, (AK9; AlSi6Cu4, (AK64 and AlSi11, (AK11 show significant differences between each other. The quantitative analysis of the temperature distribution and nuclei surface area performed on the example of the alloy AK9 (subjected to defined period of corrosion allows for the statement that they are dangerous in conditions of explosion risk. Following this fact, designers and users of machine parts made from these materials should not use them in conditions where the explosive mixtures occur.

  1. Lithium alloy negative electrodes

    Science.gov (United States)

    Huggins, Robert A.

    The 1996 announcement by Fuji Photo Film of the development of lithium batteries containing convertible metal oxides has caused a great deal of renewed interest in lithium alloys as alternative materials for use in the negative electrode of rechargeable lithium cells. The earlier work on lithium alloys, both at elevated and ambient temperatures is briefly reviewed. Basic principles relating thermodynamics, phase diagrams and electrochemical properties under near-equilibrium conditions are discussed, with the Li-Sn system as an example. Second-phase nucleation, and its hindrance under dynamic conditions plays an important role in determining deviations from equilibrium behavior. Two general types of composite microstructure electrodes, those with a mixed-conducting matrix, and those with a solid electrolyte matrix, are discussed. The Li-Sn-Si system at elevated temperatures, and the Li-Sn-Cd at ambient temperatures are shown to be examples of mixed-conducting matrix microstructures. The convertible oxides are an example of the solid electrolyte matrix type. Although the reversible capacity can be very large in this case, the first cycle irreversible capacity required to convert the oxides to alloys may be a significant handicap.

  2. Low activation vanadium alloys

    International Nuclear Information System (INIS)

    Witzenburg, W. van.

    1991-01-01

    The properties and general characteristics of vanadium-base alloys are reviewed in terms of the materials requirements for fusion reactor first wall and blanket structures. In this review attention is focussed on radiation response including induced radioactivity, mechanical properties, compatibility with potential coolants, physical and thermal properties, fabricability and resources. Where possible, properties are compared to those of other leading candidate structural materials, e.g. austenitic and ferritic/martensitic steels. Vanadium alloys appear to offer advantages in the areas of long-term activation, mechanical properties at temperatures above 600 deg C, radiation resistance and thermo-hydraulic design, due to superior physical and thermal properties. They also have a potential for higher temperature operation in liquid lithium systems. Disadvantages are associated with their ability to retain high concentrations of hydrogen isotopes, higher cost, more difficult fabrication and welding. A particular concern regarding use of vanadium alloys relates their reactivity with non-metallic elements, such as oxygen and nitrogen. (author). 33 refs.; 2 figs.; 2 tabs

  3. Doing religion im Phowa-Kurs: Praxeologische und reflexionslogische Studien zum "bewussten Sterben" im Diamantweg-Buddhismus

    Directory of Open Access Journals (Sweden)

    Werner Vogd

    2015-07-01

    Full Text Available Im Sinne einer pragmatistischen Perspektive, wie sie zuerst John DEWEY (1987 [1934] in Anschluss an William JAMES formulierte, ist das Religiöse weniger als eine spezifische Art von experience zu verstehen, denn als ein adjustment hin zu einer epistemischen Perspektive, die alle Erfahrungen in einem veränderten Licht erscheinen lässt. Religiosität zielt damit auf ein besonderes Selbst- und Weltverhältnis, in dem die Beziehung zwischen Selbst und Welt aus einer ganzheitlichen Perspektive betrachtet wird. Wie aber können fremde, auf den ersten Blick in ihrer Genese unwahrscheinliche und unter modernen Verhältnissen zudem anzweifelbare religiöse Haltungen und Sinnsysteme etabliert werden? Am Beispiel der im tibetischen Buddhismus verbreiteten Phowa-Meditation des "bewussten Sterbens" wird untersucht, wie für westliche Adept/innen auf den ersten Blick befremdlich und esoterisch anmutende spirituelle Lehren mit zunehmender Praxis an Evidenz und Sinnhaftigkeit gewinnen können, indem sich Gruppenprozesse, Visualisierungen, körperorientierte Übungen und psychisches Erleben zu einem übergreifenden Arrangement verschränken. Die empirische Datengrundlage für die Untersuchung liefern narrative Interviews mit westlich sozialisierten Schüler/innen und Lehrer/innen des Diamantweg-Buddhismus, der derzeit größten buddhistischen Gemeinschaft des tibetischen Buddhismus in Deutschland. Die Auswertung der Interviews erfolgte angelehnt an die dokumentarische Methode, erweitert durch eine Kontexturanalyse, um den Reflexionsverhältnissen gerecht zu werden, die den religiösen Selbst- und Weltbezug aufspannen. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs1503179

  4. Impact toughness of laser alloyed aluminium AA1200 alloys

    CSIR Research Space (South Africa)

    Mabhali, Luyolo AB

    2013-08-01

    Full Text Available ),. 559-563. [2] T. Tomida, K. Nakata, S. Saji, T. Kubo, T, Formation of metal matrix composite layer on aluminium alloy with TiC-Cu powder by laser surface alloying process; Surface and Coatings Technology; vol. 142-144, 2001, 585-589. [3] L. A. B...

  5. Titanium alloys. Advances in alloys, processes, products and applications

    International Nuclear Information System (INIS)

    Blenkinsop, P.A.

    1993-01-01

    The last few years have been a period of consolidation of existing alloys and processes. While the aerospace industry remains the principal driving force for alloy development, the paper illustrates examples of new markets being established in 'older' alloys, by a combination of product/process development and a re-examination of engineering design parameters. Considerable attention is still being directed towards the titanium aluminide systems, but other more conventional alloy developments are underway aimed at specific engineering and process requirements, both in the aerospace and non-aerospace sectors. Both the advanced high temperature and conventional alloy developments are considered, before the paper goes on to assess the potential of new processes and products, like spray-forming, metal matrix composites and shaped-plate rolling. (orig.)

  6. Alloy development for cladding and duct applications

    International Nuclear Information System (INIS)

    Straalsund, J.L.; Johnson, G.D.

    1981-01-01

    Three general classes of materials under development for cladding and ducts are listed. Solid solution strengthened, or austenitic, alloys are Type 316 stainless steel and D9. Precipitation hardened (also austenitic) alloys consist of D21, D66 and D68. These alloys are similar to such commercial alloys as M-813, Inconel 706, Inconel 718 and Nimonic PE-16. The third general class of alloys is composed of ferritic alloys, with current emphasis being placed on HT-9, a tempered martensitic alloy, and D67, a delta-ferritic steel. The program is comprised of three parallel paths. The current reference, or first generation alloy, is 20% cold worked Type 316 stainless steel. Second generation alloys for near-term applications include D9 and HT-9. Third generation materials consist of the precipitation strengthened steels and ferritic alloys, and are being considered for implementation at a later time than the first and second generation alloys. The development of second and third generation materials was initiated in 1974 with the selection of 35 alloys. This program has proceeded to today where there are six advanced alloys being evaluated. These alloys are the developmental alloys D9, D21, D57, D66 and D68, together with the commerical alloy, HT-9. The status of development of these alloys is summarized

  7. ODS Alloys for Nuclear Applications

    International Nuclear Information System (INIS)

    Jang, Jin Sung

    2006-01-01

    ODS (oxide dispersion strengthening) alloy is one of the potential candidate alloys for the cladding or in reactor components of Generation IV reactors and for the structural material even for fusion reactors. It is widely accepted as very resistant material to neutron irradiation as well as strong material at high temperature due to its finely distributed and stable oxide particles. Among Generation IV reactors SFR and SCWR are anticipated in general to run in the temperature range between 300 and 550 .deg. C, and the peak cladding temperature is supposed to reach at about 620 .deg. C during the normal operation. Therefore Zr.base alloys, which have been widely known and adopted for the cladding material due to their excellent neutron economics, are no more adequate at these operating conditions. Fe-base ODS alloys in general has a good high temperature strength at the above high temperature as well as the neutron resistance. In this study a range of commercial grade ODS alloys and their applications are reviewed, including an investigation of the stability of a commercial grade 20% Cr Fe-base ODS alloy(MA956). The alloy was evaluated in terms of the fracture toughness change along with the aging treatment. Also an attempt of the development of 9% Cr Fe-base ODS alloys is introduced

  8. Nachlassverzeichnisse im Netz – Ein Projekt der Bayerischen Staatsbibliothek

    Directory of Open Access Journals (Sweden)

    Maximilian Schreiber

    2015-12-01

    Full Text Available Nachlässe rücken in der wissenschaftlichen Forschung immer mehr in den Fokus, wie etwa die stark gestiegenen Nutzerzahlen der Bayerischen Staatsbibliothek (BSB über die letzten Jahre hinweg deutlich zeigen. Umso wichtiger ist insbesondere für Bibliotheken mit umfangreichen und fachlich breit gestreuten Nachlassbeständen eine möglichst genaue Erschließung im Internet, um der wissenschaftlichen Forschung einen schnellen Zugriff auf diese unikalen Materialien zu ermöglichen. Bei der digitalen Bereitstellung und vernetzten Erschließung verfolgt die BSB mit ihren rund 1.100 Nachlässen eine doppelte Strategie. Einerseits wird versucht, ausgewählte Nachlässe im Verbundsystem Kalliope zu katalogisieren. Andererseits werden die Erschließungsdaten zu den bereits erschlossenen und den erst grob geordneten Nachlässen, die in Form von hand- oder maschinenschriftlichen Listen sowie als Wordlisten vorliegen, digitalisiert und über den Bibliothekskatalog online zur Verfügung gestellt, um den Nutzern die Möglichkeit zu geben, sich so über die vorhandenen Bestände zu informieren. Wie dieses Projekt genau durchgeführt wurde, ist Gegenstand des Artikels. Special collections and personal papers are becoming more and more important for academic research, as is shown clearly by the increasing usage numbers at the Bavarian State Library (BSB over the last couple of years. Especially for libraries with extensive and manifold collections of estates, it is important to present these unique materials in a well-indexed manner on the internet, in order to give the scientific community easy access. The Bavarian State Library, which keeps more than 1.100 estates of personal papers, pursues a double strategy: On the one hand, selected estates are fully cataloged in the database “Kalliope”. As this procedure is likely to take a long time, the library on the other hand has been digitizing older hand- or typewritten lists with information

  9. Workflows des Projektes Mengenentsäuerung im Deutschen Literaturarchiv

    Directory of Open Access Journals (Sweden)

    Melanie Kubitza

    2018-03-01

    Full Text Available Das Deutsche Literaturarchiv Marbach (DLA begann 1998 mit der Evaluation geeigneter Entsäuerungsverfahren für seine unikalen Archiv- und Bibliotheksbestände. Seit 2013 erfolgt eine kontinuierliche Entsäuerungsbehandlung der Buchbestände mit dem Papersave-Verfahren der Nitrochemie AG, mit einer jährlichen Entsäuerungsleistung von insgesamt rund 4,0 t in acht Chargen. Neben den Magazinbeständen mit Erstausgaben bis hin zur Sekundärliteratur zu den einzelnen Autoren, wurden nun auch erstmals erfolgreich Bände aus den Spezialsammlungen des DLA entsäuert, zu denen auch Autorenbibliotheken gehören. Der Beitrag erläutert neben der Zusammenarbeit des Referats Bestandserhaltung mit den Abteilungen Bibliothek und Archiv auch Teilaspekte der Workflows aus restauratorischer Sicht. Dabei steht die intern entwickelte Barcode-unterstützte Dokumentation der Maßnahme auf Exemplarsebene im Bestandskatalog Kallías im Fokus. Sie enthält neben den verfahrensrelevanten Daten u. a. Informationen zu den Ausschlusskriterien oder alternativen und ergänzenden Maßnahmen der Verpackung, Restaurierung oder Digitalisierung. Das Marbacher Mengenentsäuerungsprojekt führt an den Originalen eine Qualitätskontrolle bezüglich aufgetretener Nebenwirkungen am Bibliotheksgut durch und kontrolliert die Langzeitwirkung der Entsäuerung an originalähnlichen Referenzbänden mit nicht zerstörungsfreien Messungen. In 1998 the German Literature Archive (DLA began to evaluate appropriate deacidification processes for its unique archive and library stock. Since 2013, Nitrochemie’s papersave procedure has been used for an ongoing deacidification treatment of the bookstock with an annual output of about 4,0 t in eight batches. The deacidification process has been successfully used for primary and secondary literature as well as - for the first time - for volumes of the rare materials collection of the DLA, including authors‘ libraries. The article describes the

  10. Nickel alloys and high-alloyed special stainless steels. Properties, manufacturing, applications. 4. compl. rev. ed.

    International Nuclear Information System (INIS)

    Heubner, Ulrich; Kloewer, Jutta; Alves, Helena; Behrens, Rainer; Schindler, Claudius; Wahl, Volker; Wolf, Martin

    2012-01-01

    This book contains the following eight topics: 1. Nickel alloys and high-alloy special stainless steels - Material overview and metallurgical principles (U. Heubner); 2. Corrosion resistance of nickel alloys and high-alloy special stainless steels (U. Heubner); 3. Welding of nickel alloys and high-alloy special stainless steels (T. Hoffmann, M. Wolf); 4. High-temperature materials for industrial plant construction (J. Kloewer); 5. Nickel alloys and high-alloy special stainless steels as hot roll clad composites-a cost-effective alternative (C. Schindler); 6. Selected examples of the use of nickel alloys and high-alloy special stainless steels in chemical plants (H. Alves); 7. The use of nickel alloys and stainless steels in environmental engineering (V. Wahl); 8: Nickel alloys and high-alloy special stainless steels for the oil and gas industry (R. Behrens).

  11. Detection of microbial volatile organic compounds (MVOC) by means of ion mobility spectroscopy (IMS); Detektion leicht fluechtiger organischer Verbindungen mikrobiellen Ursprungs (MVOC) mittels Ionenmobilitaetsspektrometrie (IMS)

    Energy Technology Data Exchange (ETDEWEB)

    Tiebe, Carlo

    2010-07-01

    Traces of microbial volatile organic compounds (MVOCs) can indicate the growth of moulds in the indoor air. The application of ion mobility spectrometry (IMS) is a very promising method for the detection of these MVOCs due to its high sensitivity. A mobile IMS device was tested to use this analytical-chemical method for in situ indoor air diagnostics. The first part of this work describes the test gas generation of 14 MVOCs in the laboratory. The test gases were produced by preparation of permeation procedures. Due to the MVOCs test gases IMS parameters like reduced mobility (K{sub 0}), relative drift time (t{sub rd}), the concentration dependency of MVOCs signals were determined and the limit of detection (LOD) was calculated. The LODs are in the range of 2 to 192 {mu}g m{sup -3} (1 to 51 ppb{sub V}). In the second part of this manuscript seven different mould species were cultivated on nutrient media and their MVOCs emissions were explored. It was found out, that the MVOCs emissions of moulds have a dependency of species and of their cultivation time. These results are confirmed by principal component analysis (PCA). The identification of these MVOCs was performed by test-related GC-MS analysis and approved these results. The MVOCs emissions were explored in the cultivation of mould mixtures on three different building materials. The IMS-results were interpreted chemo metrically by PCA. It was possible to find different emission patterns of cultivated moulds on building materials without an identification of the MVOCs inside the emission chamber. In 27 field trials of different indoor environments (rooms) the IMS was tested to detect MVOCs. In 59 % of the cases a positive correlation is determined between visible mould-infested rooms and the detected MVOCs by IMS. (orig.)

  12. Enhancing end-to-end QoS for multimedia streaming in IMS-based networks

    NARCIS (Netherlands)

    Ozcelebi, T.; Radovanovic, I.; Chaudron, M.R.V.

    2007-01-01

    Convergence of the emerging IP Multimedia Subsystem(IMS) includes unlicensed, nondedicated and nondeterministic hence uncontrollable. computer access, networks for IP multimedia services. It enables provision of resource demanding real-time services and multimedia communication raising new

  13. [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

  14. [Perceptions of Loss, Decline and Doom in the Baltic Sea - Untergangsvorstellungen im Ostseeraum] / David Feest

    Index Scriptorium Estoniae

    Feest, David, 1969-

    2011-01-01

    Arvustus : Perceptions of Loss, Decline and Doom in the Baltic Sea - Untergangsvorstellungen im Ostseeraum. Berlin : Berliner Wissenschafts-Verlag, 2004. (Die Ostseeregione: Nördliche Dimensionen - Europäische Perspektiven. 1)

  15. Federal Workforce: Attrition Rates at Ex-Im Bank and Similar Agencies

    National Research Council Canada - National Science Library

    Hess, James

    1997-01-01

    .... Financing and protection provided by Ex-Im Bank includes (1) loans to foreign buyers of U.S. exports, (2) loan guarantees to commercial lenders providing repayment protection for loans to foreign buyers...

  16. [Umgesiedelt - Vertrieben. Deutschbalten und Polen 1939-1945 im Warthegau] / Karsten Brüggemann

    Index Scriptorium Estoniae

    Brüggemann, Karsten, 1965-

    2012-01-01

    Arvustus: Umgesiedelt - Vertrieben. Deutschbalten und Polen 1939-1945 im Warthegau / hrsg. von Eckhart Neander und Andrzej Sakson. Marburg : Verlag Herder-Institut 2010. (Tagungen zur Ostmitteleuropa-Forschung, 29)

  17. Global R&D through the Intelligent Manufacturing Systems (IMS) program

    Science.gov (United States)

    Huray, Paul G.

    1997-01-01

    The industry-led, international intelligent manufacturing systems (IMS) program provides a special vehicle for joint research and development between government, industry and academia in the United States, Canada, Japan, Australia, and Europe. Since its beginning in 1989, the IMS program has progressed through a feasibility phase which demonstrated that international legal barriers, trade issues, and intellectual property problems could be overcome. The program is constructed to provide higher quality design, customized products, shorter delivery cycles and lower costs. Interactions between partner companies have led to new business opportunities for mutual profit and some claim to have learned strategic information about their international competitors. The IMS program is growing through the participation of hundreds of corporate and university partners who share responsibilities in specific projects and jointly reap benefits for their manufacturing products and processes. The logic for choosing or not choosing the IMS mechanisms will be discussed and R and D projects will be identified.

  18. MALDI (matrix assisted laser desorption ionization) Imaging Mass Spectrometry (IMS) of skin: Aspects of sample preparation.

    Science.gov (United States)

    de Macedo, Cristiana Santos; Anderson, David M; Schey, Kevin L

    2017-11-01

    MALDI (matrix assisted laser desorption ionization) Imaging Mass Spectrometry (IMS) allows molecular analysis of biological materials making possible the identification and localization of molecules in tissues, and has been applied to address many questions on skin pathophysiology, as well as on studies about drug absorption and metabolism. Sample preparation for MALDI IMS is the most important part of the workflow, comprising specimen collection and preservation, tissue embedding, cryosectioning, washing, and matrix application. These steps must be carefully optimized for specific analytes of interest (lipids, proteins, drugs, etc.), representing a challenge for skin analysis. In this review, critical parameters for MALDI IMS sample preparation of skin samples will be described. In addition, specific applications of MALDI IMS of skin samples will be presented including wound healing, neoplasia, and infection. Copyright © 2017 Elsevier B.V. All rights reserved.

  19. Seismic Calibration of Group 1 IMS Stations in Eastern Asia for Improved IDC Event Location

    National Research Council Canada - National Science Library

    Murphy, J. R; Rodi, W. L; Johnson, M; Sultanov, J. D; Bennett, T. J; Toksoz, M. N; Ovtchinnikov, V; Barker, B. W; Rosca, A. M; Shchukin, Y

    2006-01-01

    .... In order to establish a robust nuclear test monitoring capability, it is necessary to calibrate the IMS seismic stations used in monitoring, to account for systematic deviations from the nominal travel time curves...

  20. Detection of Atmospheric Explosions at IMS Monitoring Stations using Infrasound Techniques

    National Research Council Canada - National Science Library

    Christie, Douglas R; Kennett, Brian L; Tarlowski, Chris

    2006-01-01

    Work is continuing on the development of infrasound techniques that can be used to improve detection, location and discrimination capability for atmospheric nuclear explosions at International Monitoring System (IMS...

  1. [David Feest. Zwangskollektivierung im Baltikum : die Sowjetisierung des estnischen Dorfes 1944-1953] / Anu Mai Kõll

    Index Scriptorium Estoniae

    Kõll, Anu Mai, 1946-

    2008-01-01

    Arvustus: Feest, David. Zwangskollektivierung im Baltikum : die Sowjetisierung des estnischen Dorfes 1944-1953. Köln [etc.] : Böhlau, 2007. Esimesest rahvusvaheliselt kättesaadavast laiahaardelisest Eesti kollektiviseerimist käsitlevast teosest

  2. Der Einsatz von Online-Datenbanken für Objektinnovationen im Systemgeschäft

    OpenAIRE

    Noch, Rainer

    1990-01-01

    Der Einsatz von Online-Datenbanken für Objektinnovationen im Systemgeschäft. - Augsburg : FGM-Verl., 1990. - 62, LVII S. - Zugl.: Augsburg, Univ., Diplomarb. - (Arbeitspapiere zur Schriftenreihe Schwerpunkt Marketing ; 31)

  3. Physik im 21. Jahrhundert Essays zum Stand der Physik

    CERN Document Server

    Röss, Dieter

    2011-01-01

    Physik ist eine höchst lebendige Wissenschaft! Einmal gewonnene Grundlagen-Erkenntnisse lassen sich auf unübersehbar viele Anwendungsbereiche anwenden. Experimentell gesichertes Detailwissen wächst heute in wenigen Dekaden lawinenartig in eine Größenordnung, die selbst für den Fachmann im Ganzen nicht mehr überschaubar ist. Dieses Werk wählt einen neuen Zugang: Beschränkung auf wenige, exemplarische Teilgebiete der modernen Physik bei Darstellung ihrer Zusammenhänge in aller Tiefe. Verfasser der Beiträge sind herausragende Wissenschaftler mit großer Lebenserfahrung, die dem Leser in ihrem Fachgebiet Zusammenhänge erschließen und Ausblicke in zukünftige Möglichkeiten eröffnen. Mit ihrer in langjähriger Lehrtätigkeit gesammelten Erfahrung formulieren sie das in einem reichen Forscherleben gesammeltes Wissen ohne Abstriche an den Erkenntniswert so, dass es von einer elementaren Basis aus zugänglich ist.

  4. Performance analysis of IMS based LTE and WIMAX integration architectures

    Directory of Open Access Journals (Sweden)

    A. Bagubali

    2016-12-01

    Full Text Available In the current networking field many research works are going on regarding the integration of different wireless technologies, with the aim of providing uninterrupted connectivity to the user anywhere, with high data rates due to increased demand. However, the number of objects like smart devices, industrial machines, smart homes, connected by wireless interface is dramatically increasing due to the evolution of cloud computing and internet of things technology. This Paper begins with the challenges involved in such integrations and then explains the role of different couplings and different architectures. This paper also gives further improvement in the LTE and Wimax integration architectures to provide seamless vertical handover and flexible quality of service for supporting voice, video, multimedia services over IP network and mobility management with the help of IMS networks. Evaluation of various parameters like handover delay, cost of signalling, packet loss,, is done and the performance of the interworking architecture is analysed from the simulation results. Finally, it concludes that the cross layer scenario is better than the non cross layer scenario.

  5. Politische Bildung im Kontext von Regierung, Unterricht und Zucht

    Directory of Open Access Journals (Sweden)

    Thomas Rucker

    2014-02-01

    Full Text Available Johann Friedrich Herbart (1776-1841 gilt als der Begründer der wissenschaftlichen Pädagogik. In diesem Beitrag wird zu zeigen versucht, dass Herbart die Unterstützung politischer Bildung als eine Aufgabe von Regierung, Unterricht und Zucht bestimmt und in seinem Werk wichtige „Bausteine“ für eine Theorie der politischen Bildung unter den Bedingungen von Erziehung vorlegt hat. Nach Herbart ist das politische Selbst- und Weltverhältnis auf Sachverhalte bezogen, die nicht nur die Lebensführung einzelner Menschen, sondern die Lebensführung einer Mehrzahl von Menschen betreffen. Nicht das Zusammenleben von Menschen generell ist jedoch Orientierungsgesichtspunkt des politischen Selbst- und Weltverhältnisses, sondern nur das problematisch gewordene Zusammenleben. Politik ergibt sich nach Herbart aus einem Konflikt hinsichtlich der Frage, wie das Zusammenleben von Menschen geregelt sein sollte. Während die Regierung lediglich mittelbar einen Beitrag zur politischen Bildung leistet, indem sie die Voraussetzungen für Unterricht und Zucht bereitstellt, fungieren die beiden zuletzt genannten Formen von Erziehung als die eigentlichen Medien, in denen die politische Bildung im Sinne Herbarts ihren Ort hat.

  6. Primary fibrosarcoma im small intestine of dog - Case report

    Directory of Open Access Journals (Sweden)

    Geórgia Modé Magalhães

    2015-06-01

    Full Text Available ABSTRACT. Magalhães G.M., Santilli J., Calazans S.G., Nishimura L.T., Cerejo S.A. & Dias F.G.G. [Primary fibrosarcoma im small intestine of dog - Case report.] Fibrossarcoma primário em intestino delgado de cão - Relato de caso. Revista Brasileira de Medicina Veterinária, 37(2:145-148, 2015. Programa de Pós-Graduação em Medicina Veterinária de Pequenos Animais, Universidade de Franca, Av. Dr. Armando Salles Oliveira, 201, Cx postal 82, Parque Universitá- rio, Franca, SP 14404-600, Brasil. E-mail: georgiamode@hotmail.com Intestinal neoplasms are uncommon in dogs, and among the most frequently diagnosed are smooth muscle, lymphomas and carcinomas. The fibrosarcoma is extremely rare in the intestine of animals of this species therefore, little is known about the macroscopic and behavior of this tumor. Given this unusual intestinal disease in dogs, the present study aimed to report a case of intestinal fibrosarcoma in a poodle breed dog, 15 years old, with no apparent clinical signs. The mass was pedunculated, whitish and firm consistency. The diagnosis was made by histopathology. After four months of surgical excision, there was no recurrence and metastasis. We conclude that the intestinal fibrosarcoma has low aggressiveness, are rare and can present macroscopic pediculated.

  7. Cyber-Mobbing als verletzender Sprechakt im Sinne Judith Butlers

    Directory of Open Access Journals (Sweden)

    Katharina Luckner

    2012-12-01

    Full Text Available Dieser Beitrag widmet sich der Frage, inwiefern Cyber-Mobbing unter Bezugnahme auf Judith Butlers sprach- bzw. diskurstheoretisches Konzept als verletzender Sprechakt verstanden werden kann. Zu diesem Zweck werden in einem ersten Schritt die Besonderheiten von Cyber-Mobbing aufgezeigt und im Anschluss daran ein für diesen Text geeigneter Cyber-Mobbing-Begriff formuliert. Daraufhin erfolgt eine interpretative Auseinandersetzung mit der Butlerschen Konzeption verletzender Sprechakte, bevor anschließend anhand wesentlicher Schnittstellen herausgearbeitet wird, inwiefern Cyber-Mobbing als ein solcher verletzender sprachlicher Akt begriffen werden kann. Resümierend werden die zentralen Ergebnisse der Ausarbeitung zusammengefasst und es wird danach gefragt, welche Konsequenzen bzw. Folgen sich hieraus für ein mögliches verändertes Verständnis von Cyber-Mobbing ergeben.This Paper argues whether cyber bullying can be understood as violating speach act with reference to Judith Butler by starting with a definition of cyber bullying (respectively the term cyber 'mobbing' which is used synonymously in German speaking countries and an outline of Butler's theory. After that, the question of a new or different understanding of cyber bullying and its consequences is discussed.

  8. Habitusformen von Eltern im Kontext der Computerspielnutzung ihrer Kinder

    Directory of Open Access Journals (Sweden)

    Henrike Friedrichs

    2014-09-01

    Full Text Available Dieser Artikel stellt die Sichtweisen von Eltern auf das Computerspielverhalten ihrer Kinder und ihr erzieherisches Handeln bezüglich des Computerspielens vor. Die Ergebnisse stammen aus einem Forschungsprojekt der Fakultät für Erziehungswissenschaft der Universität Bielefeld mit dem Titel "Computerspielnutzung aus Elternsicht". Die empirische Studie aus dem Jahr 2014 umfasst 28 leitfadengestützte Interviews mit Elternpaaren. Die Ergebnisse zeigen u. a., dass der mediale Habitus (Kommer/Biermann 2012 die Ausgestaltung des medienerzieherischen Habitus (Friedrichs 2013 beeinflusst; d. h. bspw., dass computerspielerfahrene Eltern ein differenzierteres Medienerziehungsverhalten im Hinblick auf Computerspiele zeigen, als Eltern, die keine eigenen Computerspielerfahrungen gemacht haben. This article shows parental points of view on computer game habits of children and the educational acting of parents concerning computer games. The results are product of the research project "Parental views on children and adolescents playing computer games" of the Faculty of Educational Science of Bielefeld University. The empirical study from 2014 includes 28 qualitative interviews with both parents. The results show among other things that the media-related habitus of parents influences their media-educational habitus. This means e. g. that parents experienced on video games show a more differentiated educational behaviour concerning video games than parents without such kind of experience.

  9. Corrosion of aluminum alloys as a function of alloy composition

    International Nuclear Information System (INIS)

    Johnson, A.B. Jr.

    1969-10-01

    A study was initiated which included nineteen aluminum alloys. Tests were conducted in high purity water at 360 0 C and flow tests (approx. 20 ft/sec) in reactor process water at 130 0 C (TF-18 loop tests). High-silicon alloys and AlSi failed completely in the 360 0 C tests. However, coupling of AlSi to 8001 aluminum suppressed the failure. The alloy compositions containing iron and nickel survived tht 360 0 C autoclave exposures. Corrosion rates varied widely as a function of alloy composition, but in directions which were predictable from previous high-temperature autoclave experience. In the TF-18 loop flow tests, corrosion penetrations were similar on all of the alloys and on high-purity aluminum after 105 days. However, certain alloys established relatively low linear corrosion rates: Al-0.9 Ni-0.5 Fe-0.1 Zr, Al-1.0 Ni-0.15 Fe-11.5 Si-0.8 Mg, Al-1.2 Ni-1.8 Fe, and Al-7.0 Ni-4.8 Fe. Electrical polarity measurements between AlSi and 8001 alloys in reactor process water at temperatures up to 150 0 C indicated that AlSi was anodic to 8001 in the static autoclave system above approx. 50 0 C

  10. Aluminum alloy and associated anode and battery

    International Nuclear Information System (INIS)

    Tarcy, G.P.

    1990-01-01

    This patent describes an aluminum alloy. It comprises: eutectic amounts of at least two alloying elements selected from the group consisting of bismuth, cadmium, scandium, gallium, indium, lead, mercury, thallium, tin, and zinc with the balance being aluminum and the alloying elements being about 0.01 to 3.0 percent by weight of the alloy

  11. Stress Corrosion Cracking of Certain Aluminum Alloys

    Science.gov (United States)

    Hasse, K. R.; Dorward, R. C.

    1983-01-01

    SC resistance of new high-strength alloys tested. Research report describes progress in continuing investigation of stress corrosion (SC) cracking of some aluminum alloys. Objective of program is comparing SC behavior of newer high-strength alloys with established SC-resistant alloy.

  12. General characteristics of eutectic alloy solidification mechanisms

    International Nuclear Information System (INIS)

    Lemaignan, Clement.

    1977-01-01

    The eutectic alloy sodification was studied in binary systems: solidification of non facetted - non facetted eutectic alloy (theoretical aspects, variation of the lamellar spacing, crystallographic relation between the various phases); solidification of facetted - non facetted eutectic alloy; coupled growth out of eutectic alloy; eutectic nucleation [fr

  13. Messung der Konzentration von D-Dimeren zur Ermittlung physiologischer Referenzbereiche im Verlauf der Schwangerschaft

    OpenAIRE

    Pingel, Nadine

    2011-01-01

    Einleitung: D-Dimere (DDIM) sind Fibrinspaltprodukte. Erhöhte Konzentrationen im Blutplasma sind Ausdruck einer verstärkten Aktivierung des Gerinnungs- und Fibrinolysesystems wie bei venösen Thromboembolien. Ebenfalls einen Zustand erhöhter Hyperkoagulabilität stellt die Schwangerschaft dar. Im Rahmen physiologischer Veränderungen steigen die DDIM in dieser Zeit kontinuierlich an. Referenzbereiche hinsichtlich der DDIM-Konzentration beruhen weitestgehend auf Messungen bei nicht-schwangere...

  14. "In allen guten Buchhandlungen ist zu haben". Buchwerbung in Deutschland im 17. und 18. Jahrhundert

    OpenAIRE

    Hauke, Marie-Kristin

    2005-01-01

    Der Buchhandel entwickelte im Laufe des 17. und 18. Jahrhunderts zahlreiche Hilfsmittel zur Absatzförderung, auf die er als Produzent des „Massenartikels“ Buch angewiesen war und die ihn zum Vorreiter der modernen Wirtschaftswerbung machten. Ausgangsbasis dafür waren die im 16. Jahrhundert entstandenen Werbemittel Buchtitel, Titelblatt und Katalog, die durch die Buchanzeigen in verschiedenen Werbeträgern (Zeitung, Zeitschrift, Intelligenzblatt, Buch) sowie einige kleinere Formen (Handzettel, ...

  15. Innovative Techniken und Algorithmen im Bereich Computational-Finance und Risikomanagement

    OpenAIRE

    Liang, Qian

    2012-01-01

    Diese Dissertation besteht aus zwei aktuellen Themen im Bereich Finanzmathematik, die voneinander unabhängig sind. Beim ersten Thema, "Flexible Algorithmen zur Bewertung komplexer Optionen mit mehreren Eigenschaften mittels der funktionalen Programmiersprache Haskell", handelt es sich um ein interdisziplinäres Projekt, in dem eine wissenschaftliche Brücke zwischen der Optionsbewertung und der funktionalen Programmierung geschlagen wurde. Im diesem Projekt wurde eine funktionale Biblio...

  16. Light-weight internet protocol multimedia subsystem (IMS) client: development for smart mobile devices

    CSIR Research Space (South Africa)

    Masonta, M

    2010-11-01

    Full Text Available : IP multimedia Services Identity Module J2ME: Java 2 Micro-Edition JCP: Java Community Process JSR: Java Specification Request MAGNET: My personal Adaptive Global Network MGCF: Media Gateway Control Function MIDP: Mobile Information Device...) .................................................................. 30 Figure 2.15: IMS-Communicator Screenshot (PT Inova??o, 2007) .......................................... 31 Figure 2.16: UCT IMS Client Screenshot (Waiting & Good, 2007) ......................................... 32 Figure 3.1: Sun Java WTK 2...

  17. Multimedia als Entwicklungsfaktor im ländlichen Raum? : Fallbeispiel Wirtschaftsregion Friedrichshafen/Bodensee

    OpenAIRE

    Haupenthal, Edmund; Leuninger, Stefan; Beermann, Petra; Kutter, Martina

    1998-01-01

    Im Rahmen der vorliegenden empirischen Studie in der Wirtschaftsregion Friedrichshafen wurden die Wechselwirkungen zwischen regionalen Strukturfaktoren und „Multimedia-Entwicklungen“ im ländlichen Raum untersucht. Die positive Multimedia-Entwicklung geht auf folgende regionale Erfolgsfaktoren zurück: die politische Akzeptanz der neuen Technologie, die Vorhaltung der Multimedia-Akademie, die regionale Nachfrage, die Verfügbarkeit ausreichenden Know-hows und Humankapitals sowie das Vorhandensei...

  18. Antisemitismus, Shoah und deutsche Verantwortung:(Nach)Wirkungen des Nationalsozialismus im medialen Nahostdiskurs

    OpenAIRE

    Ullrich, Peter

    2010-01-01

    Wahrscheinlich wird kein anderer internationaler Konflikt derart kontrovers und emotional in der bundesrepublikanischen Öffentlichkeit sowie auch und gerade in der politischen Linken diskutiert wie der israelisch-palästinensische oder weiter gefasst, der Nahost-Konflikt. Aus diesem Grund nimmt dieses Thema einen besonderen Platz in der Bildungsarbeit der Rosa-Luxemburg- Stiftung im Inland wie im Ausland ein. Wenngleich dabei auch in der Stiftung und ihrem Umfeld die Meinungen auseinandergehen...

  19. Produkteinführung im Umfeld des Niedergangs: Die Blu-ray Disk

    OpenAIRE

    Oestreicher, Klaus; Walton, Nigel; Newnham, M.

    2014-01-01

    Dieses Kapitel diskutiert die Problematik existenzieller Bedrohung durch radikale Innovationen. Virtuelle Marktangebote verändern Märkte im Home Entertainment und das Konsumverhalten grund¬legend. Zunehmend gefährden dematerialisierte Produkte, welche zu Services werden und Folge der Information Communication Tech¬nologies (ICT) sind, die Lebensfähigkeit physischer Produkte. Deren Märkte sind im Niedergang und das bedroht nicht nur die Hersteller optischer Disks (CD und DVD), sondern beeinflu...

  20. Original models of NGN/IMS-networks surrounded by circuit-switched systems

    OpenAIRE

    Kulikov, Nikolay

    2014-01-01

    On obtaining of the Alexander Graham Bell a patent for invention of the telephone in 1987, the communication system consistently has gone through several evolutionary stages: from analog lines and manual switches to video telephony and IMS architecture. Each of the stages can be described by specific switching systems, data transmission systems and types of transmitted information. After implementation of such solution, it is possible to create a number of access nodes in the Operators IMS-ne...

  1. Method for Estimating Evaporative Potential (IM/CLO) from ASTM Standard Single Wind Velocity Measures

    Science.gov (United States)

    2016-08-10

    IM/CLO) FROM ASTM STANDARD SINGLE WIND VELOCITY MEASURES DISCLAIMER The opinions or assertions contained herein are the private views of the...USARIEM TECHNICAL REPORT T16-14 METHOD FOR ESTIMATING EVAPORATIVE POTENTIAL (IM/CLO) FROM ASTM STANDARD SINGLE WIND VELOCITY... ASTM STANDARD SINGLE WIND VELOCITY MEASURES Adam W. Potter Biophysics and Biomedical Modeling Division U.S. Army Research Institute of Environmental

  2. Pragmatic awareness of Suggestions: From (Im)Polite Mannerism to Attitudinal Appropriateness

    OpenAIRE

    Hamid Allami; Nasim Boustani

    2017-01-01

    The present research seeks to determine: (a) Iranian EFL learners’ application of suggestion semantic formulae ;(b) their attitude of appropriateness in terms of confidence in the employment of appropriate supportive moves; (c), their (im)polite mannerism with respect to the selected strategies; and (d) the relationship between attitude of appropriateness and mannerism of (im)politeness. An Oxford Quick placement Test (OQPT) was administered among 60 Iranian EFL learners to check their langua...

  3. Die nonverbale Kommunikation im Bundestagswahlkampf 2002:Gerhard Schröder versus Edmund Stoiber

    OpenAIRE

    Dieball, W. (Werner)

    2004-01-01

    Diese interdisziplinäre Dissertation aus dem Fachbereich Politikwissenschaften verfolgt vordergründig das Ziel, die Wirkungsweise der nonverbalen Kommunikation im Bundestagswahlkampf 2002 zu analysieren. Im Zentrum der empirisch-analytischen Untersuchung stehen Gerhard Schröder und Edmund Stoiber, die nach den nonverbalen Merkmalen: äußeres Erscheinungsbild, Mimik, Stimmklang, Gestik und Motorik untersucht werden. Das leitende Forschungsinteresse der Arbeit besteht darin, zu eruieren, inwiewe...

  4. Datengeleitetes Lernen im studienbegleitenden Deutschunterricht am Beispiel des KoGloss-Ansatzes

    OpenAIRE

    Dubova, Agnese; Proveja, Egita

    2016-01-01

    Der vorliegende Aufsatz stellt den sprachdidaktischen Ansatz KoGloss vor und beschreibt die Möglichkeiten seines Einsatzes im studienbegleitenden Deutschunterricht. Als eine der Formen des datengeleiteten Lernens ermöglicht der KoGloss-Ansatz eine forschungsorientierte und lernerzentrierte Herangehensweise, die insbesondere im akademischen Sprachunterricht gefragt ist. Eine korpusbasierte Erschließung von (Fach-)Wörtern und komplexen sprachlichen Mustern, das learning by doing, die Kooperatio...

  5. Pareto-optimal alloys

    DEFF Research Database (Denmark)

    Bligaard, Thomas; Johannesson, Gisli Holmar; Ruban, Andrei

    2003-01-01

    Large databases that can be used in the search for new materials with specific properties remain an elusive goal in materials science. The problem is complicated by the fact that the optimal material for a given application is usually a compromise between a number of materials properties and the ......Large databases that can be used in the search for new materials with specific properties remain an elusive goal in materials science. The problem is complicated by the fact that the optimal material for a given application is usually a compromise between a number of materials properties...... and the cost. In this letter we present a database consisting of the lattice parameters, bulk moduli, and heats of formation for over 64 000 ordered metallic alloys, which has been established by direct first-principles density-functional-theory calculations. Furthermore, we use a concept from economic theory......, the Pareto-optimal set, to determine optimal alloy solutions for the compromise between low compressibility, high stability, and cost....

  6. Robust stator resistance identification of an IM drive using model reference adaptive system

    International Nuclear Information System (INIS)

    Madadi Kojabadi, Hossein; Abarzadeh, Mostafa; Aghaei Farouji, Said

    2013-01-01

    Highlights: ► We estimate the stator resistance and rotor speed of the IM. ► We proposed a new quantity to estimate the speed and stator resistance of IM. ► The proposed algorithm is robust to rotor resistance variations. ► We estimate the IM speed and stator resistance simultaneously to avoid speed error. - Abstract: Model reference adaptive system (MRAS) based robust stator resistance estimator for sensorless induction motor (IM) drive is proposed. The MRAS is formed with a semi-active power quantity. The proposed identification method can be achieved with on-line tuning of the stator resistance with robustness against rotor resistance variations. Stable and efficient estimation of IM speed at low region will be guaranteed by simultaneous identification of IM speed and stator resistance. The stability of proposed stator resistance estimator is checked through Popov’s hyperstability theorem. Simulation and experimental results are given to highlight the feasibility, the simplicity, and the robustness of the proposed method.

  7. Respuestas faciales ante imágenes de advertencia de tabaco

    Directory of Open Access Journals (Sweden)

    M. A. Muñoz

    Full Text Available Resumen En 2003, la Comisión Europea propuso una serie de advertencias visuales para ser incluidas en los embalajes de tabaco, con el objetivo de motivar a los fumadores a dejar de fumar y promover actitudes negativas hacia el tabaco. El objetivo de este estudio fue evaluar el impacto de las advertencias sanitarias mediante autoinformes y medidas psicofisiológicas. Cincuenta sujetos sanos (19-23 años visionaron un conjunto de treinta y seis imágenes de diferente contenido emocional y veinticuatro del banco de imágenes preventivas propuestas por la Comisión Europea. Se registró la actividad eléctrica de los músculos cigomático mayor y corrugador mientras los sujetos visionaban estas imágenes. A continuación, los participantes evaluaban las imágenes en las dimensiones de agradabilidad y activación. Los resultados muestran una mayor actividad eléctrica del musculo corrugador ante la presentación de imágenes desagradables comparadas con advertencias desagradables incluidas en los paquetes de tabaco. Estos resultados sugieren que la campaña preventiva podría beneficiarse de imágenes preventivas más impactantes, promoviendo así la activación del sistema motivacional evitativo/defensivo.

  8. A critical analysis of Sorrell v. IMS Health, Inc.: Pandora's box at best.

    Science.gov (United States)

    Bibet-Kalinyak, Isabelle

    2012-01-01

    Sorrell v. IMS Health, Inc. ("IMS Health"), a remarkable health care case with resounding First Amendment and economic repercussions, features the clashing interests of the State of Vermont and aggressive free market players from the pharmaceutical and data mining industries in a constitutional battle over Free Speech. In 2007, Vermont enacted Act 80, The Confidentiality of Prescription Information Act, prohibiting the sale, disclosure, and use of pharmacy records. Together with two other data miners and PhRMA, an association of brand-name drug manufacturers, IMS Health successfully challenged the constitutionality of Act 80 on First Amendment grounds. This article examines the legal arguments of IMS Health and Act 80 and analyzes why IMS Health stands out for potentially challenging the traditional doctrine of commercial speech and the resulting legal implications. After reviewing the Supreme Court's reasoning, the article concludes that, although the Supreme Court reached the appropriate outcome, it did so by unjustifiably departing from the established legal doctrine of commercial speech and the American tradition of consumer protection. At best, IMS Health's reasoning opens a legal Pandora's Box potentially leading to an onset of new commercial speech challenges; at worst, it manufactured a Trojan Horse aimed at eroding the traditional regulatory safeguards that maintain a balance between the needs of consumers and corporations alike.

  9. Spontane Mobilisierung und der Wandel kollektiver Formationen im Internet. Eine Fallstudie zur PEGIDA-Bewegung

    Directory of Open Access Journals (Sweden)

    Sang-hui Nam

    2016-11-01

    Full Text Available Der vorliegende Beitrag beschäftigt sich mit der Frage, wie sich eine aus spontaner Mobilisierung entstandene soziale Bewegung als kollektive Formation im Internet entwickelt. Da spontane Bewegungen in aller Regel nur über eine schwache kollektive Identität verfügen, werden sie bislang überwiegend als Übergangsphänomen betrachtet. Viele Studien beschäftigten sich eher mit den Folgen spontaner Mobilisierung, insbesondere der Frage, wie daraus eine nachhaltige Bewegung entstehen kann. Die kollektive Formation selbst ist bis dato weitgehend eine Blackbox geblieben. In der vorliegenden Studie widme ich mich folgenden zentralen Forschungsfragen: 1. Wie werden kollektive Formationen aus spontanen ProtestteilnehmerInnen dargestellt und generiert? 2. Wie ändern sich diese im Verlauf der Mobilisierung? Im Mittelpunkt der empirischen Analyse stehen Online-Kommentare, die eine zunehmend wichtige Rolle für soziale Bewegungen und spontane Mobilisierungsprozesse spielen. Am Beispiel von PEGIDA wird die Konstruktion einer kollektiven Formation über Live-Kommentare zu Live-Übertragungen von PEGIDA-Demonstrationen sowie deren Wandel in drei Phasen untersucht. Im ersten Schritt werden die soziotechnischen Grundlagen kollektiven Handelns im Internet erläutert. Der zweite Schritt befasst sich mit der methodischen Vorgehensweise. Im dritten Schritt werden ausgewählte Textpassagen von Online-Kommentaren analysiert. Anschließend wird der Wandel kollektiver Formationen nachgezeichnet. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs170138

  10. Powder metallurgy and mechanical alloying effects on the formation of thermally induced martensite in an FeMnSiCrNi SMA

    Directory of Open Access Journals (Sweden)

    Pricop Bogdan

    2015-01-01

    Full Text Available By ingot metallurgy (IM, melting, alloying and casting, powder metallurgy (PM, using as-blended elemental powders and mechanical alloying (MA of 50 % of particle volume, three types of FeMnSiCrNi shape memory alloy (SMA specimens were fabricated, respectively. After specimen thickness reduction by hot rolling, solution treatments were applied, at 973 and 1273 K, to thermally induce martensite. The resulting specimens were analysed by X-ray diffraction (XRD and scanning electron microscopy (SEM, in order to reveal the presence of ε (hexagonal close-packed, hcp and α’ (body centred cubic, bcc thermally induced martensites. The reversion of thermally induced martensites, to γ (face centred cubic, fcc austenite, during heating, was confirmed by dynamic mechanical analysis (DMA, which emphasized marked increases of storage modulus and obvious internal friction maxima on DMA thermograms. The results proved that the increase of porosity degree, after PM processing, increased internal friction, while MA enhanced crystallinity degree.

  11. Dynamic behaviour of TM380 mild steel and Ti6Al4V alloy subjected to blast loading

    CSIR Research Space (South Africa)

    Shoke, Lerato

    2016-10-01

    Full Text Available and Base Metals Development Network Conference 2016, 19-20 October 2016, KwaZulu Natal, Maharani Hotel Dynamic behaviour of TM380 mild steel and Ti6Al4V alloy subjected to blast loading L. Shoke,1* K. Mutombo2, I.M. Snyman1 and T. Sono1 1... Landwards Sciences, Defence Peace Safety and Security (DPSS), 2 Material Sciences and Manufacturing (MSM), Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa Lshoke@csir.co.za Abstract This paper deals...

  12. Medida Interpessoal de Psicopatia (IM-P: estudo preliminar no contexto brasileiro Interpersonal Measure of Psychopathy (IM-P: preliminary study in the Brazilian context

    Directory of Open Access Journals (Sweden)

    Tárcia Rita Davoglio

    2011-01-01

    Full Text Available INTRODUÇÃO: A observação direta do comportamento interpessoal é um recurso importante na descrição e diagnóstico da personalidade psicopática. A Medida Interpessoal de Psicopatia (Interpersonal Measure of Psychopathy, IM-P é um instrumento psicométrico composto por 21 itens, desenvolvido para ser utilizado em associação com outras escalas de avaliação da psicopatia. Foca-se, especificamente, nos comportamentos interpessoais e aspectos não verbais evidentes na interação do entrevistador com indivíduos que apresentam características psicopáticas. OBJETIVO: Descrever resultados preliminares sobre a investigação de aspectos interpessoais da psicopatia mediante a utilização da IM-P, incluindo as etapas de tradução/adaptação e avaliação de confiabilidade interavaliadores da IM-P, em uma amostra de adolescentes brasileiros. MÉTODO: Trata-se de estudo transversal, descritivo e correlacional realizado com 20 adolescentes masculinos cumprindo medida socioeducativa com privação de liberdade na Região Metropolitana de Porto Alegre (RS. Após os procedimentos de tradução da escala, treinamento dos pesquisadores e teste piloto por meio de uma entrevista semiestruturada, a IM-P foi pontuada por três juízes independentes. RESULTADOS: Os resultados estatísticos, obtidos através do coeficiente de concordância de Kendall, revelaram grau de concordância interavaliadores elevado e satisfatório para os escores totais da IM-P (W = 0,84; p INTRODUCTION: The direct observation of interpersonal behaviors is an important resource in the description and diagnosis of the psychopathic personality. The Interpersonal Measure of Psychopathy (IM-P is a psychometric instrument comprised of 21 items, designed to be applied in association with other instruments that also evaluate psychopaths. It focuses specifically on interpersonal and non-verbal behaviors that become evident during the interaction between the interviewer and individuals

  13. Density of Liquid Ni-Cr Alloy

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    The density of liquid Ni-Cr alloy was measured by a modified sessile drop method. The density of liquid Ni-Cr alloywas found to decrease with increasing temperature and Cr concentration in the alloy. The molar volume of liquidNi-Cr alloy increases with increasing the Cr concentration in the alloy. The molar volume of Ni-Cr alloy determinedin the present work shows a positive deviation from the linear molar volume.

  14. Results from an Interval Management (IM) Flight Test and Its Potential Benefit to Air Traffic Management Operations

    Science.gov (United States)

    Baxley, Brian; Swieringa, Kurt; Berckefeldt, Rick; Boyle, Dan

    2017-01-01

    NASA's first Air Traffic Management Technology Demonstration (ATD-1) subproject successfully completed a 19-day flight test of an Interval Management (IM) avionics prototype. The prototype was built based on IM standards, integrated into two test aircraft, and then flown in real-world conditions to determine if the goals of improving aircraft efficiency and airport throughput during high-density arrival operations could be met. The ATD-1 concept of operation integrates advanced arrival scheduling, controller decision support tools, and the IM avionics to enable multiple time-based arrival streams into a high-density terminal airspace. IM contributes by calculating airspeeds that enable an aircraft to achieve a spacing interval behind the preceding aircraft. The IM avionics uses its data (route of flight, position, etc.) and Automatic Dependent Surveillance-Broadcast (ADS-B) state data from the Target aircraft to calculate this airspeed. The flight test demonstrated that the IM avionics prototype met the spacing accuracy design goal for three of the four IM operation types tested. The primary issue requiring attention for future IM work is the high rate of IM speed commands and speed reversals. In total, during this flight test, the IM avionics prototype showed significant promise in contributing to the goals of improving aircraft efficiency and airport throughput.

  15. Alloying Solid Solution Strengthening of Fe-Ga Alloys: A First-Principle Study

    National Research Council Canada - National Science Library

    Chen, Kuiying; Cheng, Leon M

    2006-01-01

    ... and Co in cubic solid solution of Fe-Ga alloys. Mayer bond order "BO" values were used to evaluate the atomic bond strengths in the alloys, and were then used to assess the alloying strengthening characteristics...

  16. ALLOY DESIGN AND PROPERTY EVALUATION OF TI ALLOY ...

    African Journals Online (AJOL)

    eobe

    1,2 DEPARTMENT OF METALLURGICAL AND MATERIALS ENGINEERING, UNIVERSITY OF NIGERIA, NSUKKA, NIGERIA. 2 DEPT ... a result of this structural change, titanium alloys fall ... the phase stability and mechanical behaviours of Ti-.

  17. Laser surface alloying of aluminium-transition metal alloys

    Directory of Open Access Journals (Sweden)

    Almeida, A.

    1998-04-01

    Full Text Available Laser surface alloying has been used as a tool to produce hard and corrosion resistant Al-transition metal (TM alloys. Cr and Mo are particularly interesting alloying elements to produce stable highstrength alloys because they present low diffusion coefficients and solid solubility in Al. To produce Al-TM surface alloys a two-step laser process was developed: firstly, the material is alloyed using low scanning speed and secondly, the microstructure is modified by a refinement step. This process was used in the production of Al-Cr, Al-Mo and Al-Nb surface alloys by alloying Cr, Mo or Nb powder into an Al and 7175 Al alloy substrate using a CO2 laser. This paper presents a review of the work that has been developed at Instituto Superior Tecnico on laser alloying of Al-TM alloys, over the last years.

    En el presente trabajo se estudia la aleación superficial mediante láser de aluminio con metales de transición. El cromo y el molibdeno son particularmente interesantes porque producen aleaciones de alta resistencia y por el bajo coeficiente de difusión y solución sólida en aluminio. Para producir estas aleaciones se ha seguido un procedimiento desarrollado en dos partes. En primer lugar, el material se alea usando una baja velocidad de procesado y en segundo lugar la estructura se modifica mediante un refinamiento posterior. Este procedimiento se ha empleado en la producción de aleaciones Al-Cr, Al-Mo y Al-Nb mediante aleación con láser de CO2 de polvos de Cr, Mo o Nb en aluminio y la aleación 7175. Este trabajo es una revisión del desarrollado en el Instituto Superior Técnico de Lisboa en los últimos años.

  18. Freie Lerninhalte im Internet mit Studierenden recherchieren, kommentieren und kompilieren. Zur Gestaltung der online-Selbstlernangebote im hr-Funkkolleg Philosophie

    Directory of Open Access Journals (Sweden)

    Jakob Krebs

    2017-03-01

    Full Text Available Wie lassen sich online frei verfügbare Bildungsinhalte mit Studierenden so zusammenstellen, dass sie als thematisch sortierte Selbstlernmaterialien unkompliziert gefunden werden können – sei es von anderen Studierenden, interessierten Laien oder auch von Lehrkräften in Bildungsinstitutionen? Der vorliegende Werkstattbericht rekonstruiert ein Lernszenario, in dem Studierende vorhandene Materialien im Internet recherchierten, kommentierten und kompilierten, um ein Online-Zusatzangebot zu den Radiosendungen im hr-Funkkolleg Philosophie 2014/15 zu erstellen. Die Rahmenbedingungen dieser ungewöhnlichen universitären Kooperation mit dem Rundfunk werden im ersten Abschnitt vorgestellt. Der zweite Abschnitt skizziert das didaktische Design zusammen mit dem Projektstrukturplan eines produktorientierten kollaborativen Lernsettings mit Wiki-Einsatz. Im dritten Abschnitt werden der Lernerfolg bei den Studierenden sowie einige Herausforderungen benannt, die u. a. in der Abschlussevaluierung zur Sprache kamen. Der vierte Abschnitt macht die Projekterfahrungen für reguläre Lehr- und Lern-Szenarien fruchtbar, in denen nicht nur Studierende mit didaktischen Interessen durch die gemeinsame Gestaltung von Internetangeboten fachlich und methodisch profitieren können. Mit dem Bericht wird somit u. a. veranschaulicht, wie sich Ansätze von Blended, Peer-Assisted und Service Learning produktiv kombinieren lassen.

  19. Was bedeutet Trägheit? Begriff und Wirkung der Trägheit im Rahmen des Wechselverhaltens von Konsumenten im Strommarkt

    NARCIS (Netherlands)

    Henseler, Jörg

    2006-01-01

    In Wissenschaft und Praxis wird die Trägheit der Konsumenten als Ursache der geringen Wechselrate im deutschen Strommarkt für Haushaltskunden diskutiert. Der vorliegende Beitrag arbeitet heraus, dass es sich bei dieser Argumentation entweder um eine Tautologie oder ein Synomym für den Verbleib in

  20. Manufacturing of High Entropy Alloys

    Science.gov (United States)

    Jablonski, Paul D.; Licavoli, Joseph J.; Gao, Michael C.; Hawk, Jeffrey A.

    2015-07-01

    High entropy alloys (HEAs) have generated interest in recent years due to their unique positioning within the alloy world. By incorporating a number of elements in high proportion they have high configurational entropy, and thus they hold the promise of interesting and useful properties such as enhanced strength and phase stability. The present study investigates the microstructure of two single-phase face-centered cubic (FCC) HEAs, CoCrFeNi and CoCrFeNiMn, with special attention given to melting, homogenization and thermo-mechanical processing. Large-scale ingots were made by vacuum induction melting to avoid the extrinsic factors inherent in small-scale laboratory button samples. A computationally based homogenization heat treatment was applied to both alloys in order to eliminate segregation due to normal ingot solidification. The alloys fabricated well, with typical thermo-mechanical processing parameters being employed.

  1. Nickel and cobalt base alloys

    International Nuclear Information System (INIS)

    Houlle, P.

    1994-01-01

    Nickel base alloys have a good resistance to pitting, cavernous or cracks corrosion. Nevertheless, all the nickel base alloys are not equivalent. Some differences exit between all the families (Ni, Ni-Cu, Ni-Cr-Fe, Ni-Cr-Fe-Mo/W-Cu, Ni-Cr-Mo/W, Ni-Mo). Cobalt base alloys in corrosive conditions are generally used for its wear and cracks resistance, with a compromise to its localised corrosion resistance properties. The choice must be done from the perfect knowledge of the corrosive medium and of the alloys characteristics (chemical, metallurgical). A synthesis of the corrosion resistance in three medium (6% FeCl 3 , 4% NaCl + 1% HCl + 0.1% Fe 2 (SO 4 ) 3 , 11.5% H 2 SO 4 + 1.2% HCl + 1% Fe 2 (SO 4 ) 3 + 1% CuCl 2 ) is presented. (A.B.). 11 refs., 1 fig., 12 tabs

  2. Magnetoimpedance effect in Nanoperm alloys

    International Nuclear Information System (INIS)

    Hernando, B.; Alvarez, P.; Santos, J.D.; Gorria, P.; Sanchez, M.L.; Olivera, J.; Perez, M.J.; Prida, V.M.

    2006-01-01

    The influence of isothermal annealing (1 h at 600 deg. C in Ar atmosphere) on the soft magnetic properties and magnetoimpedance (MI) effect has been studied in ribbons of the following Nanoperm alloys: Fe 91 Zr 7 B 2 , Fe 88 Zr 8 B 4 , Fe 87 Zr 6 B 6 Cu 1 and Fe 8 Zr 1 B 1 . A maximum MI ratio of about 27% was measured for the nanocrystalline alloy Fe 87 Zr 6 B 6 Cu 1 at a driving frequency of 0.2 MHz. The thermal annealing led to magnetic softening for this alloy, while a hardening is observed for the Fe 8 Zr 1 B 1 alloy

  3. Emissivity measurements on aeronautical alloys

    International Nuclear Information System (INIS)

    Campo, L. del; Perez-Saez, R.B.; Gonzalez-Fernandez, L.; Esquisabel, X.; Fernandez, I.; Gonzalez-Martin, P.; Tello, M.J.

    2010-01-01

    The emissivity of three Ni and Co based aeronautical alloys is analyzed in this paper. These alloys are employed in high temperature environments whenever good corrosion resistance, high temperature resistance and high strength are essential. Thus, apart from the aeronautical industry, these alloys are also used in other technological applications, as for example, aerospace, nuclear reactors, and tooling. The results in this paper extend the emissivity data for these alloys available in the literature. Emissivity dependence on the radiation wavelength (2-22 μm), sample temperature (200-650 o C) and emission angle (0-85 o ) has been investigated. In addition, the effect of surface finish and oxidation has also been taken into consideration. The data in this paper have several applications, as temperature measurement of a target by pyrometry, low observability of airplanes and thermal radiation heat transfer simulation in airplane nozzles or furnaces.

  4. Emissivity measurements on aeronautical alloys

    Energy Technology Data Exchange (ETDEWEB)

    Campo, L. del, E-mail: leire.del-campo@cnrs-orleans.f [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Perez-Saez, R.B., E-mail: raul.perez@ehu.e [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Instituto de Sintesis y Estudio de Materiales, Universidad del Pais Vasco, Apdo. 644, 48080 Bilbao (Spain); Gonzalez-Fernandez, L. [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Esquisabel, X.; Fernandez, I. [Industria de Turbo Propulsores, S.A., Planta de Zamudio, Edificio 300, 48170 Zamudio, Bizkaia (Spain); Gonzalez-Martin, P. [Industria de Turbo Propulsores, S.A., Parque empresarial San Fernando, Avda. Castilla 2, 28830 San Fernando de Henares, Madrid (Spain); Tello, M.J. [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Instituto de Sintesis y Estudio de Materiales, Universidad del Pais Vasco, Apdo. 644, 48080 Bilbao (Spain)

    2010-01-21

    The emissivity of three Ni and Co based aeronautical alloys is analyzed in this paper. These alloys are employed in high temperature environments whenever good corrosion resistance, high temperature resistance and high strength are essential. Thus, apart from the aeronautical industry, these alloys are also used in other technological applications, as for example, aerospace, nuclear reactors, and tooling. The results in this paper extend the emissivity data for these alloys available in the literature. Emissivity dependence on the radiation wavelength (2-22 {mu}m), sample temperature (200-650 {sup o}C) and emission angle (0-85{sup o}) has been investigated. In addition, the effect of surface finish and oxidation has also been taken into consideration. The data in this paper have several applications, as temperature measurement of a target by pyrometry, low observability of airplanes and thermal radiation heat transfer simulation in airplane nozzles or furnaces.

  5. First principles thermodynamics of alloys

    International Nuclear Information System (INIS)

    Ducastelle, F.

    1993-01-01

    We present a brief report on the methods of solid state physics (electronic structure, statistical thermodynamics) that allow us to discuss the phase stability of alloys and to determine their phase diagrams. (orig.)

  6. Auger electron spectroscopy of alloys

    International Nuclear Information System (INIS)

    Kuijers, F.J.

    1978-01-01

    This thesis describes how the surface compositions of some alloys can be determined by Auger Electron Spectroscopy (AES). The motivation for this research and the reasons for the choice of alloy systems studied are formulated. The theoretical background of AES is briefly discussed and the apparatus used and the experimental procedures applied are described. Four alloy systems have been investigated in this thesis - Ni-Cu and Pd - Ag (consisting of a component active in most cataytic reactions - Ni and Pd; and a component which is almost inactive for a number of reactions - Cu and Ag) and Pt - Pd and Pt-Ir (consisting of two active components). Knowledge of the surface composition of the various alloy systems is shown to be essential for the interpretation of catalytic results. (Auth./C.F.)

  7. Derivative spectrophotometry of cobalt alloys

    International Nuclear Information System (INIS)

    Spitsyn, P.K.

    1985-01-01

    The method of derivative spectrophotometry is briefly described, and derivative absorption spectra are presented for samarium, cobalt, and commercial Sm-Co alloys. It is shown that the use of derivative spectrophotometry not only improves the accuracy and selectivity of element determinations but also simplifies the analysis of alloys. Results of a statistical evaluation of the metrological characteristics of the analytical procedure described here are presented. 8 references

  8. Volatilization from PCA steel alloy

    Energy Technology Data Exchange (ETDEWEB)

    Hagrman, D.L.; Smolik, G.R.; McCarthy, K.A.; Petti, D.A.

    1996-08-01

    The mobilizations of key components from Primary Candidate Alloy (PCA) steel alloy have been measured with laboratory-scale experiments. The experiments indicate most of the mobilization from PCA steel is due to oxide formation and spalling but that the spalled particles are large enough to settle rapidly. Based on the experiments, models for the volatization of iron, manganese, and cobalt from PCA steel in steam and molybdenum from PCA steel in air have been derived.

  9. The microstructures of ordered alloys

    International Nuclear Information System (INIS)

    Sarma, G.M.K.; Ranganathan, S.

    1977-01-01

    The phenomenon of ordering in substitutional alloys confers special properties on them by introducing various types of structures and structural defects. Some of the important structural defects (translational and rotational antiphase boundaries, dissociated antiphase boundaries and superdislocations) and their observation by various microscopical methods, with particular emphasis on the applications of the electron microscope are described with illustrations drawn from the studies on nickel-molybdenum and nickel-tungsten alloys. (M.G.B.)

  10. Laser welding of aluminium alloys

    OpenAIRE

    Forsman, Tomas

    2000-01-01

    This thesis treats laser welding of aluminium alloys from a practical perspective with elements of mathematical analysis. The theoretical work has in all cases been verified experimentally. The aluminium alloys studied are from the 5xxx and 6xxx groups which are common for example in the automotive industry. Aluminium has many unique physical properties. The properties which more than others have been shown to influence the welding process is its high reflection, high thermal conductivity, lo...

  11. Electrical conductivity in random alloys

    International Nuclear Information System (INIS)

    Mookerjee, A.; Thakur, P.K.; Yussouff, M.

    1984-12-01

    Based on the augmented space formalism introduced by one of us and the use of the Ward identity and the Bethe-Sapeter equation, a formalism has been developed for the calculation of electrical conductivity for random alloys. A simple application is made to a model case, and it is argued that the formalism enables us to carry out viable calculations on more realistic models of alloys. (author)

  12. Electrical conductivity in random alloys

    International Nuclear Information System (INIS)

    Mookerjee, A.; Yussouff, M.

    1983-06-01

    Starting from the augmented space formalism by one of us, and the use of the Ward identity and Bethe Salpeter equation, a complete formalism for the calculation of the electrical conductivity in tight-binding models of random binary alloys has been developed. The formalism is practical in the sense that viable calculations may be carried out with its help for realistics models of alloy systems. (author)

  13. Der Tatort im studienbegleitenden Deutschunterricht ab B2. Potenziale für heterogene Studierendengruppen im nichtdeutschsprachigen Raum

    Directory of Open Access Journals (Sweden)

    Michael Seyfarth

    2016-04-01

    Full Text Available Aktuelle Diskussionen zum studienbegleitenden Deutschunterricht verdeutlichen die Notwendigkeit danach, sich bei curricularen Überlegungen sowohl an institutionellen Rahmenbedingungen als auch an spezifischen Bedürfnissen der Studierenden zu orientieren. Da Lehrwerke den damit einhergehenden Anforderungen nach Offenheit und Adaptierbarkeit nicht gerecht werden können, sind mittelfristig alternative Konzepte gefragt, die es ermöglichen, im Zuge curricularer Überlegungen die notwendige Kohärenz zwischen einzelnen Unterrichtseinheiten herzustellen und dennoch eine flexible Anpassung an konkrete Lernkontexte zu erlauben. Der vorliegende Beitrag stellt ein solches Konzept vor. Ausgehend von der Arbeit am Tatort werden drei Lernbereiche vorgestellt, die neben der Arbeit am Film auch die Arbeit an angrenzenden Themen und Texten sowie darauf aufbauend die Entwicklung studienbegleitender kommunikativer Handlungskompetenz vorsehen.  Current discussions on teaching German alongside the core subjects at university show the necessity to consider both institutional requirements and the students' individual goals when establishing teaching objectives. Existing text books, however, suffer from an overly tight structure that doesn’t allow the instructor to use additional material in order to focus on the specific needs of the students in a suitable way. Flexible concepts are needed which serve as a framework and which can be realized with texts and tasks focusing on what is required by a specific learning context. This paper presents such an approach, using the German feature film Tatort. Besides ideas for working with the audiovisual material we will present opportunities that come along with the various texts and discussions in media and social networks arising around the film as well as ways for combining these aspects with developing language skills for the academic context.

  14. CD31-Expression am Primärtumor und Nachweis hämatogen disseminierter Tumorzellen im Knochenmark von Brustkrebspatientinnen

    OpenAIRE

    Eisenmann, Petra

    2005-01-01

    Der Nachweis von disseminierten Tumorzellen im Knochenmark von Patientinnen mit primärem Mammakarzinom ist ein wichtiger prognostischer Parameter. In der vorliegenden Arbeit wurde der Nachweis von CD31 am Primärtumor Mammakarzinom mit dem Auftreten von Mikrometastasen im Knochenmark korreliert. Ferner wurde die prognostische Bedeutung von disseminierten Tumorzellen im Knochenmark und die prognostische Bedeutung von CD31 evaluiert. Bei 50 Patientinnen des Gesamtkollektivs von 195 (25,6%) wu...

  15. Associations between United States Medical Licensing Examination (USMLE) and Internal Medicine In-Training Examination (IM-ITE) scores.

    Science.gov (United States)

    McDonald, Furman S; Zeger, Scott L; Kolars, Joseph C

    2008-07-01

    Little is known about the associations of previous standardized examination scores with scores on subsequent standardized examinations used to assess medical knowledge in internal medicine residencies. To examine associations of previous standardized test scores on subsequent standardized test scores. Retrospective cohort study. One hundred ninety-five internal medicine residents. Bivariate associations of United States Medical Licensing Examination (USMLE) Steps and Internal Medicine In-Training Examination (IM-ITE) scores were determined. Random effects analysis adjusting for repeated administrations of the IM-ITE and other variables known or hypothesized to affect IM-ITE score allowed for discrimination of associations of individual USMLE Step scores on IM-ITE scores. In bivariate associations, USMLE scores explained 17% to 27% of the variance in IME-ITE scores, and previous IM-ITE scores explained 66% of the variance in subsequent IM-ITE scores. Regression coefficients (95% CI) for adjusted associations of each USMLE Step with IM-ITE scores were USMLE-1 0.19 (0.12, 0.27), USMLE-2 0.23 (0.17, 0.30), and USMLE-3 0.19 (0.09, 0.29). No single USMLE Step is more strongly associated with IM-ITE scores than the others. Because previous IM-ITE scores are strongly associated with subsequent IM-ITE scores, appropriate modeling, such as random effects methods, should be used to account for previous IM-ITE administrations in studies for which IM-ITE score is an outcome.

  16. Spannungsaktivierte Natriumkanäle im Corpus luteum des Primaten und ihre Rolle bei der Regulation von Steroidproduktion und Luteolyse

    OpenAIRE

    Bulling, Andreas

    2008-01-01

    Im Ovar des Menschen und im Corpus Luteum des Rhesusaffen konnte die mRNA für einen bislang nur im peripheren Nervensystem und in neuroendokrinen Zellen gefundenen spannungsaktivierten Natriumkanal (eNaK, SCN9A) nachgewiesen werden. In kultivierten humanen Granulosaluteinzellen wurden sowohl die Transkriptmenge, als auch die durch depolarisierende Spannungspulse ausgelösten, TTX-sensitiven transienten Ströme durch hCG negativ reguliert. Trotz des gleichzeitigen Vorkommens spannungsaktivierter...

  17. INSTANT MESSENGER (IM) APPLICATION USAGE AT WORKPLACE AND WORKING CULTURE OF A PUBLIC UNIVERSITY SUPPORTING STAFF IN KOTA KINABALU SABAH.

    OpenAIRE

    Nading, Dorina; Morshidi, Azizan

    2016-01-01

    Instant Messenger (IM) has becoming a new form of social relations tool in which people interact, dialogue, collaborate and exchange information. Many organizations and companies have adapted their management strategies with the utilization of IM applications, both internally or externally. The popularity of IM in local organizational management in such a way that government agencies, companies, universities, colleges and schools. The use of applications such as wechat, whatsApp messenger...

  18. Improved detection of Mycobacterium bovis infection in bovine lymph node tissue using immunomagnetic separation (IMS-based methods.

    Directory of Open Access Journals (Sweden)

    Linda D Stewart

    Full Text Available Immunomagnetic separation (IMS can selectively isolate and concentrate Mycobacterium bovis cells from lymph node tissue to facilitate subsequent detection by PCR (IMS-PCR or culture (IMS-MGIT. This study describes application of these novel IMS-based methods to test for M. bovis in a survey of 280 bovine lymph nodes (206 visibly lesioned (VL, 74 non-visibly lesioned (NVL collected at slaughter as part of the Northern Ireland bovine TB eradication programme. Their performance was evaluated relative to culture. Overall, 174 (62.1% lymph node samples tested positive by culture, 162 (57.8% by IMS-PCR (targeting IS6110, and 191 (68.2% by IMS-MGIT culture. Twelve (6.9% of the 174 culture positive lymph node samples were not detected by either of the IMS-based methods. However, an additional 79 M. bovis positive lymph node samples (27 (13.1% VL and 52 (70.3% NVL were detected by the IMS-based methods and not by culture. When low numbers of viable M. bovis are present in lymph nodes (e.g. in NVLs of skin test reactor cattle decontamination prior to culture may adversely affect viability, leading to false negative culture results. In contrast, IMS specifically captures whole M. bovis cells (live, dead or potentially dormant which are not subject to any deleterious treatment before detection by PCR or MGIT culture. During this study only 2.7% of NVL lymph nodes tested culture positive, whereas 70.3% of the same samples tested M. bovis positive by the IMS-based tests. Results clearly demonstrate that not only are the IMS-based methods more rapid but they have greater detection sensitivity than the culture approach currently used for the detection of M. bovis infection in cattle. Adoption of the IMS-based methods for lymph node testing would have the potential to improve M. bovis detection in clinical samples.

  19. Sequence-specific DNA alkylation by tandem Py-Im polyamide conjugates.

    Science.gov (United States)

    Taylor, Rhys Dylan; Kawamoto, Yusuke; Hashiya, Kaori; Bando, Toshikazu; Sugiyama, Hiroshi

    2014-09-01

    Tandem N-methylpyrrole-N-methylimidazole (Py-Im) polyamides with good sequence-specific DNA-alkylating activities have been designed and synthesized. Three alkylating tandem Py-Im polyamides with different linkers, which each contained the same moiety for the recognition of a 10 bp DNA sequence, were evaluated for their reactivity and selectivity by DNA alkylation, using high-resolution denaturing gel electrophoresis. All three conjugates displayed high reactivities for the target sequence. In particular, polyamide 1, which contained a β-alanine linker, displayed the most-selective sequence-specific alkylation towards the target 10 bp DNA sequence. The tandem Py-Im polyamide conjugates displayed greater sequence-specific DNA alkylation than conventional hairpin Py-Im polyamide conjugates (4 and 5). For further research, the design of tandem Py-Im polyamide conjugates could play an important role in targeting specific gene sequences. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  20. SISTEMAS MULTIMEDIA BASADOS EN PROTOCOLO IP IMS APLICADOS A SERVICIOS LTE DE 4G

    Directory of Open Access Journals (Sweden)

    Edgar Alfonso Cipagauta Pedraza

    2013-01-01

    Full Text Available Este artículo presenta de una manera sencilla, el sistema creado para soportar los servicios de multimedia dentro de red de nueva generación (NGN llamada IP Multimedia Subsystem (IMS a la vez que se explica su relación con la tecnología Long Term Evolution (LTE definida por el 3GPP en su release 8. IMS se trata de una arquitectura integrada en el núcleo de red para ofrecer servicios multimediales de audio y video sobre una infraestructura. Entonces ahora, los servicios prestados pasarán a ser ofrecidos a través de IP IMS y será la piedra angular en donde estos servicios se generarán y se ofrecerán. LTE es sin duda un impulsor de IMS, pero hay otros factores que empiezan a favorecer y a plantear un modelo de negocio favorable para la arquitectura multimedia. IMS está orientado a habilitar la convergencia de servicios, combinando el crecimiento de la Internet con el de las comunicaciones móviles, desde cualquier ubicación y método de forma continua y permanente.

  1. Surface modification of 5083 Al alloy by electrical discharge alloying processing with a 75 mass% Si-Fe alloy electrode

    Energy Technology Data Exchange (ETDEWEB)

    Stambekova, Kuralay [Department of Materials Science and Engineering, National Chung Hsing University, 250 Kuo-Kuang Rd., Taichung 40227, Taiwan (China); Lin, Hung-Mao [Department of Mechanical Engineering, Far East University, No. 49, Zhonghua Rd., Xinshi Dist., Tainan City 74448, Taiwan (China); Uan, Jun-Yen, E-mail: jyuan@dragon.nchu.edu.tw [Department of Materials Science and Engineering, National Chung Hsing University, 250 Kuo-Kuang Rd., Taichung 40227, Taiwan (China)

    2012-03-01

    This study experimentally investigates the surface modification of 5083 Al alloy by the electrical discharge alloying (EDA) process with a Si-Fe alloy as an electrode. Samples were analyzed by transmission electron microscopy (TEM), scanning electron microscopy (SEM), micro-hardness and corrosion resistance tests. The micro-hardness of EDA alloyed layer was evidently higher than that of the base metal (5083 Al alloy). The TEM results show that the matrix of the alloyed layer has an amorphous-like structure; the matrix contains fine needle-like Si particles, block-like Si particles and nano-size Al{sub 4.5}FeSi and Al{sub 13}Fe{sub 4} particles. The TEM results support experimental results for the high hardness of the alloyed layer. Moreover, the EDA alloyed layer with composite microstructures has good corrosion resistance in NaCl aqueous solution.

  2. An IMS Station life cycle from a sustainment point of view

    Science.gov (United States)

    Brely, Natalie; Gautier, Jean-Pierre; Foster, Daniel

    2014-05-01

    The International Monitoring System (IMS) is to consist of 321 monitoring facilities, composed of four different technologies with a variety of designs and equipment types, deployed in a range of environments around the globe. The International Monitoring System is conceived to operate in perpetuity through maintenance, replacement and recapitalization of IMS facilities' infrastructure and equipment when the end of service life is reached [CTBT/PTS/INF.1163]. Life Cycle techniques and modellization are being used by the PTS to plan and forecast life cycle sustainment requirements of IMS facilities. Through historical data analysis, Engineering inputs and Feedback from experienced Station Operators, the PTS currently works towards increasing the level of confidence on these forecasts and sustainment requirements planning. Continued validation, feedback and improvement of source data from scientific community and experienced users is sought and essential in order to ensure limited effect on data availability and optimal costs (human and financial).

  3. Gas hydrates and permafrost in continental northern West Siberia; Gashydrate und Permafrost im kontinentalen noerdlichen Westsibirien

    Energy Technology Data Exchange (ETDEWEB)

    Cramer, B. [Bundesanstalt fuer Geowissenschaften und Rohstoffe, Hannover (Germany); Braun, A.; Poelchau, H.S. [Forschungszentrum Juelich (Germany). Inst. fuer Erdoel und Organische Geochemie; Littke, R. [RWTH Aachen (Germany). Lehrstuhl fuer Geologie, Geochemie und Lagerstaetten des Erdoels und der Kohle

    1997-12-31

    The largest natural gas pool in the world is located in northern part of the West Siberian Basin. During the Quaternary this reservoir became overlaid with several hundreds of metres of permafrost. The pressure and temperature conditions prevailing under this permafrost zone have led to the development of gas hydrates. As far as is known today there is no genetic relationship between the formation of the gas pool and the development of gas hydrates. The present contribution deals with these questions in detail. (MSK) [Deutsch] Im Nordteil des westsibirischen Beckens liegt die groesste Erdgaslagerstaette der Erde. Darueber hat sich im Quartaer ein mehrere hundert Meter maechtiger Permafrost gebildet. Die unter der Premafrostzone herrschenden Druck-und Temperaturbedingungen ermoeglichten die Bildung von Gashydraten. Nach heutigen Erkenntnisse besteht kein genetischer Zusammenhang zwischen Lagerstaettenbildung und Gashydraten. Im Folgenden werden Einzelheiten geschildert.

  4. Down-conversion IM-DD RF photonic link utilizing MQW MZ modulator.

    Science.gov (United States)

    Xu, Longtao; Jin, Shilei; Li, Yifei

    2016-04-18

    We present the first down-conversion intensity modulated-direct detection (IM-DD) RF photonic link that achieves frequency down-conversion using the nonlinear optical phase modulation inside a Mach-Zehnder (MZ) modulator. The nonlinear phase modulation is very sensitive and it can enable high RF-to-IF conversion efficiency. Furthermore, the link linearity is enhanced by canceling the nonlinear distortions from the nonlinear phase modulation and the MZ interferometer. Proof-of-concept measurement was performed. The down-conversion IM-DD link demonstrated 28dB improvement in distortion levels over that of a conventional IM-DD link using a LiNbO3 MZ modulator.

  5. Electron-beam welding of aluminum alloys

    Energy Technology Data Exchange (ETDEWEB)

    Brillant, Marcel; de Bony, Yves

    1980-08-15

    The objective of this article is to describe the status of the application of electron-beam welding to aluminum alloys. These alloys are widely employed in the aeronautics, space and nuclear industries.

  6. Measuring cognitive change with ImPACT: the aggregate baseline approach.

    Science.gov (United States)

    Bruce, Jared M; Echemendia, Ruben J; Meeuwisse, Willem; Hutchison, Michael G; Aubry, Mark; Comper, Paul

    2017-11-01

    The Immediate Post-Concussion Assessment and Cognitive Test (ImPACT) is commonly used to assess baseline and post-injury cognition among athletes in North America. Despite this, several studies have questioned the reliability of ImPACT when given at intervals employed in clinical practice. Poor test-retest reliability reduces test sensitivity to cognitive decline, increasing the likelihood that concussed athletes will be returned to play prematurely. We recently showed that the reliability of ImPACT can be increased when using a new composite structure and the aggregate of two baselines to predict subsequent performance. The purpose of the present study was to confirm our previous findings and determine whether the addition of a third baseline would further increase the test-retest reliability of ImPACT. Data from 97 English speaking professional hockey players who had received at least 4 ImPACT baseline evaluations were extracted from a National Hockey League Concussion Program database. Linear regression was used to determine whether each of the first three testing sessions accounted for unique variance in the fourth testing session. Results confirmed that the aggregate baseline approach improves the psychometric properties of ImPACT, with most indices demonstrating adequate or better test-retest reliability for clinical use. The aggregate baseline approach provides a modest clinical benefit when recent baselines are available - and a more substantial benefit when compared to approaches that obtain baseline measures only once during the course of a multi-year playing career. Pending confirmation in diverse samples, neuropsychologists are encouraged to use the aggregate baseline approach to best quantify cognitive change following sports concussion.

  7. Miniature GC-Minicell Ion Mobility Spectrometer (IMS) for In Situ Measurements in Astrobiology Planetary Missions

    Science.gov (United States)

    Kojiro, Daniel R.; Stimac, Robert M.; Kaye, William J.; Holland, Paul M.; Takeuchi, Norishige

    2006-01-01

    Astrobiology flight experiments require highly sensitive instrumentation for in situ analysis of volatile chemical species and minerals present in the atmospheres and surfaces of planets, moons, and asteroids. The complex mixtures encountered place a heavy burden on the analytical instrumentation to detect and identify all species present. The use of land rovers and balloon aero-rovers place additional emphasis on miniaturization of the analytical instrumentation. In addition, smaller instruments, using tiny amounts of consumables, allow the use of more instrumentation and/or ionger mission life for stationary landers/laboratories. The miniCometary Ice and Dust Experiment (miniCIDEX), which combined Gas Chromatography (GC) with helium Ion Mobility Spectrometry (IMS), was capable of providing the wide range of analytical information required for Astrobiology missions. The IMS used here was based on the PCP model 111 IMS. A similar system, the Titan Ice and Dust Experiment (TIDE), was proposed as part of the Titan Orbiter Aerorover Mission (TOAM). Newer GC systems employing Micro Electro- Mechanical System (MEMS) based technology have greatly reduced both the size and resource requirements for space GCs. These smaller GCs, as well as the continuing miniaturization of Astrobiology analytical instruments in general, has highlighted the need for smaller, dry helium IMS systems. We describe here the development of a miniature, MEMS GC-IMS system (MEMS GC developed by Thorleaf Research Inc.), employing the MiniCell Ion Mobility Spectrometer (IMS), from Ion Applications Inc., developed through NASA's Astrobiology Science and Technology Instrument Development (ASTID) Program and NASA s Small Business Innovative Research (SBIR) Program.

  8. [Christofer Herrmann. Kloster und Burg - die architektur des Deutschens Ordens im Pressen und Livland. In : Glaube, Macht und Pracht. GeistlicheGemeinschaften des Ostseeraums im Zeitalter der Backsteingotik] / Dennis Hortmuth

    Index Scriptorium Estoniae

    Hortmuth, Dennis

    2011-01-01

    Arvustus: Christofer Herrmann. Kloster und Burg - die Architektur des Deutschen Ordens in Preussen und Livland. In : Glaube, Macht und Pracht. GeistlicheGemeinschaften des Ostseeraums im Zeitalter der Backsteingotik (=Archäologie und Geschichte im Ostseeraum; Archaeology and History of the Baltic 6) Rahden : Verlag Marie Leidorf, 2009. S. 209-219. Saksa Ordu arhitektuurist Preisi- ja Liivimaal

  9. Thermodynamic Database for Zirconium Alloys

    International Nuclear Information System (INIS)

    Jerlerud Perez, Rosa

    2003-05-01

    For many decades zirconium alloys have been commonly used in the nuclear power industry as fuel cladding material. Besides their good corrosion resistance and acceptable mechanical properties the main reason of using these alloys is the low neutron absorption. Zirconium alloys are exposed to a very severe environment during the nuclear fission process and there is a demand for better design of this material. To meet this requirement a thermodynamic database is developed to support material designers. In this thesis some aspects about the development of a thermodynamic database for zirconium alloys are presented. A thermodynamic database represents an important facility in applying thermodynamic equilibrium calculations for a given material providing: 1) relevant information about the thermodynamic properties of the alloys e.g. enthalpies, activities, heat capacity, and 2) significant information for the manufacturing process e.g. heat treatment temperature. The basic information in the database is first the unary data, i.e. pure elements; those are taken from the compilation of the Scientific Group Thermodata Europe (SGTE) and then the binary and ternary systems. All phases present in those binary and ternary systems are described by means of the Gibbs energy dependence on composition and temperature. Many of those binary systems have been taken from published or unpublished works and others have been assessed in the present work. All the calculations have been made using Thermo C alc software and the representation of the Gibbs energy obtained by applying Calphad technique

  10. Quasicrystal-reinforced Mg alloys.

    Science.gov (United States)

    Kyun Kim, Young; Tae Kim, Won; Hyang Kim, Do

    2014-04-01

    The formation of the icosahedral phase (I-phase) as a secondary solidification phase in Mg-Zn-Y and Mg-Zn-Al base systems provides useful advantages in designing high performance wrought magnesium alloys. The strengthening in two-phase composites (I-phase + α -Mg) can be explained by dispersion hardening due to the presence of I-phase particles and by the strong bonding property at the I-phase/matrix interface. The presence of an additional secondary solidification phase can further enhance formability and mechanical properties. In Mg-Zn-Y alloys, the co-presence of I and Ca 2 Mg 6 Zn 3 phases by addition of Ca can significantly enhance formability, while in Mg-Zn-Al alloys, the co-presence of the I-phase and Mg 2 Sn phase leads to the enhancement of mechanical properties. Dynamic and static recrystallization are significantly accelerated by addition of Ca in Mg-Zn-Y alloy, resulting in much smaller grain size and more random texture. The high strength of Mg-Zn-Al-Sn alloys is attributed to the presence of finely distributed Mg 2 Sn and I-phase particles embedded in the α -Mg matrix.

  11. Carbon Alloys-Multi-functionalization

    Energy Technology Data Exchange (ETDEWEB)

    Yasuda, Eiichi [MSL, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)], E-mail: yasuda.e.aa.@m.titech.ac.jp; Enami, Takashi; Hoteida, Nobuyuki [MSL, Tokyo Institute of Technology, Yokohama 226-8503 (Japan); Lanticse-Diaz, L.J. [University of the Philippines (Philippines); Tanabe, Yasuhiro [Nagoya University (Japan); Akatsu, Takashi [MSL, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)

    2008-02-25

    Last decade after our proposal of the 'Carbon Alloys' concept, many different kinds of Carbon Alloys, such as carbon nanotubes, carbon nanofibers, graphene sheet with magnetism, semi-conducting BCN compounds, graphite intercalation compounds, exfoliated carbon fiber, etc. have been found and developed. To extend the concept further, it is important to make it into intelligent materials by incorporating multiple functions. One example of the multi-functionalization is the development of homo-atomic Carbon Alloys from glassy carbon (GC) that exhibits high electrical conductivity and low gas permeability after treatment at critical conditions. Glassy carbon underwent metamorphosis to graphite spheres at HIP condition, and improved resistance to oxidation after alloying with Ta. The other one is shape utilization of the nano-sized carbon by understanding the effect of its large surfaces or interfaces in nanotechnology treatment. Recently carbon nanofiber was produced by polymer blend technology (PB) which was proposed by Prof. A. Oya during the Carbon Alloy project and progressed into intelligent carbon nanofiber (CNF) materials. CNF is combined into the polymer composites which is a candidate material for the bipolar separator in fuel cell. The superior properties, i.e., high electrical conductivity, high modulus, high strength, etc., of the CNF is being utilized in the preparation of this polymer composite.

  12. Synthesis of Nb-18%Al alloy by mechanical alloying method

    International Nuclear Information System (INIS)

    Dymek, S.; Wrobel, M.; Dollar, M.

    1999-01-01

    The main goal of this study was attempt to employ by mechanical alloying to produce Nb-Al alloy. The Nb-rich alloy composition was selected in order to receive the ductile niobium solid solution (Nb ss ) phase in the final, equilibrium state. This ductile phase was believed to prevent crack propagation in the consolidated alloy and thus to improve its ductility and toughness. Elemental powders of niobium (99.8% pure and -325 mesh) and aluminium (99.9% pure and -325 mesh) were used as starting materials. These powders were mixed to give the nominal compositions od 82% Nb and 18% Al (atomic percent). Mechanical alloying was carried out in a Szegvari laboratory attritor mill in an argon atmosphere with the controlled oxygen level reduced to less than 10 ppm. The total milling time was 86 hours. During the course of milling powder samples were taken out after 5, 10 and 20 hours, which allowed characterization of the powder morphology and progress of the mechanical alloying process. The changes in particle morphology during milling were examined using a scanning electron microscope and the phase analysis was performed in a X-ray diffractometer with CoK α radiation. Initially, particles' size increased and their appearance changed from the regular to one of the flaky shape. X-ray diffraction patterns of examined powders as a function of milling time are presented. Peaks from Al, through much weaker than in the starting material, were still present after 5 hours of milling but disappeared completely after 10 hours of milling. With increasing milling time, the peaks became broader and their intensities decreased. Formation of amorphous phase was observed after 86 hours of milling. This was deducted from a diffuse halo observed at the 2Θ angle of about 27 o . Intermetallic phases Nb 3 Al and Nb 2 Al were found in the consolidated material only. (author)

  13. Datamart use for complex data retrieval in an ArcIMS application

    Energy Technology Data Exchange (ETDEWEB)

    Scherma, S. (Steven); Bolivar, Stephen L.

    2004-01-01

    This paper describes the use of datamarts and data warehousing concepts to expedite retrieval and display of complex attribute data from multi-million record databases. Los Alamos National Laboratory has developed an Internet application (SMART) using ArcIMS that relies on datamarts to quickly retrieve attribute data, associated with, but not contained within GIS layers. The volume of data and the complex relationships within the transactional database made data display within ArcIMS impractical without the use of datamarts. The technical issues and solutions involved in the development are discussed.

  14. Application of Ion Mobility Spectrometry (IMS) in forensic chemistry and toxicology with focus on biological matrices

    Science.gov (United States)

    Bernhard, Werner; Keller, Thomas; Regenscheit, Priska

    1995-01-01

    The IMS (Ion Mobility Spectroscopy) instrument 'Ionscan' takes advantage of the fact that trace quantities of illicit drugs are adsorbed on dust particles on clothes, in cars and on other items of evidence. The dust particles are collected on a membrane filter by a special attachment on a vacuum cleaner. The sample is then directly inserted into the spectrometer and can be analyzed immediately. We show casework applications of a forensic chemistry and toxicology laboratory. One new application of IMS in forensic chemistry is the detection of psilocybin in dried mushrooms without any further sample preparation.

  15. Female teams im eSport: Re-Konstruktion der Kategorie Geschlecht

    OpenAIRE

    Streubel, Anett

    2010-01-01

    "Das Ziel dieses Papers ist es, die Herausbildung von "female Teams" im eSport zu untersuchen. Das Hauptaugenmerk liegt hierbei auf Rekonstruktionsmechanismen der Kategorie Geschlecht, welche durch Sprache und Diskurse gebildet, erlernt und fortgeführt werden. Der Anteil der Spielerinnen, die das Computerspielen als Sport betreiben, wächst stetig an - deshalb soll in dieser Studie der Profibereich des eSport näher betrachtet werden. In einem Tätigkeitsfeld, in dem nicht der Körper im Mittelpu...

  16. Die biene und ihre produkte in der kunst und im alltagsleben (Fruhchristliche und byzantinische Zeit

    Directory of Open Access Journals (Sweden)

    Liveri Angeliki

    2010-01-01

    Full Text Available Die vorliegende Arbeit ist in zwei Teile geteilt: den kunst- und kulturhistorischen Teil. Im ersten Teil werden Darstellungen uber Bienen Bienenzucht, Honig und Wachs seit der fruhchristlichen bis zur spatbyzantinischen Zeit vorgefuhrt. Daher ist es als Beitrag in der "Ikonographie" der Biene wahrend dieser Zeit zu verstehen. Im kulturhistorischen Teil werden Informationen uber die Bienenzucht, den Handel mit Honig und Wachs sowie ihre vielfaltige Anwendung von der byzantinischen Gesellschaft an Hand der primaren Quellen, des Standes der Forschung und der archaologischen Funden erwahnt. Damit ist erwunscht ein moglichst gutes Bild der byzantinischen Bienenzucht wieder zu geben und die Nutzung der Bienenprodukte in Byzanz anschaulich zu machen.

  17. Quad-Polarization Transmission for High-Capacity IM/DD Links

    DEFF Research Database (Denmark)

    Estaran Tolosa, Jose Manuel; Castaneda, Mario A. Usuga; Porto da Silva, Edson

    2014-01-01

    We report the first experimental demonstration of IM/DD links usi ng four states of polarization. Fiber - Induced polarization rotation is compensated with a simple tracking algorithm operating on the Stokes space. The principle is prove n at 128 Gb/s over 2 - km SSMF......We report the first experimental demonstration of IM/DD links usi ng four states of polarization. Fiber - Induced polarization rotation is compensated with a simple tracking algorithm operating on the Stokes space. The principle is prove n at 128 Gb/s over 2 - km SSMF...

  18. Power-efficient method for IM-DD optical transmission of multiple OFDM signals.

    Science.gov (United States)

    Effenberger, Frank; Liu, Xiang

    2015-05-18

    We propose a power-efficient method for transmitting multiple frequency-division multiplexed (FDM) orthogonal frequency-division multiplexing (OFDM) signals in intensity-modulation direct-detection (IM-DD) optical systems. This method is based on quadratic soft clipping in combination with odd-only channel mapping. We show, both analytically and experimentally, that the proposed approach is capable of improving the power efficiency by about 3 dB as compared to conventional FDM OFDM signals under practical bias conditions, making it a viable solution in applications such as optical fiber-wireless integrated systems where both IM-DD optical transmission and OFDM signaling are important.

  19. Reconstrucción Tridimensional de Imágenes Ecocardiográficas

    Directory of Open Access Journals (Sweden)

    Jan Ramírez

    2001-04-01

    Full Text Available

    Las imágenes ecocardiográficas convencionales permiten la evaluación
    anatómica y funcional del corazón; por ser bidimensionales son difíciles de interpretar sin un entrenamiento adecuado; los últimos desarrollos han estado orientados a la reconstrucción del corazón en 3 y 4 dimensiones directamente en el equipo de ultrasonido o usando programas especializados. El objetivo es un software en MATLAB™ para la reconstrucción 3D y 4D de imágenes ecocardiográficas.

     

     

  20. Design of data transportation based on dual-port RAM in IMS system

    International Nuclear Information System (INIS)

    Zhang Guohui; Li Yongping

    2010-01-01

    Ion mobility spectroscopy (IMS) is a rugged, portable, sensitive, low cost, field instrumental technique capable of trace organic detection and monitoring for environmental pollutants, pesticides, explosives, narcotics, and other analytes, hence it is of great significance to social security and stability. High rate data transmission mechanism between DSP processor and ARM core is required in the electronic system of IMS. After careful comparison of UART and dual port RAM, a new design based on dual port RAM that can be applied to other similar systems. (authors)

  1. Modelled and Observed Diurnal SST Signals: "SSTDV:R.EX.-IM.A.M." Project Preliminary Results

    DEFF Research Database (Denmark)

    Karagali, Ioanna; Høyer, Jacob; LeBorgne, Pierre

    2013-01-01

    This study presents some of the preliminary results from the ESA Support To Science Element (STSE) funded project on the Diurnal Variability of the Sea Surface Temperature, regarding its Regional Extend and Implications in Atmospheric Modelling (SSTDV:R.EX.–IM.A.M.). During this phase of the proj......This study presents some of the preliminary results from the ESA Support To Science Element (STSE) funded project on the Diurnal Variability of the Sea Surface Temperature, regarding its Regional Extend and Implications in Atmospheric Modelling (SSTDV:R.EX.–IM.A.M.). During this phase...

  2. Progress in development of iron base alloys

    International Nuclear Information System (INIS)

    Zackay, V.V.; Parker, E.R.

    1980-01-01

    The ways of development of new iron base high-strength alloys are considered. Perspectiveness of ferritic steel strengthening with intermetallides (TaFe 2 , for instance) is shown. Favourable combination of plasticity, strength and fracture toughness in nickel-free iron-manganese alloys (16-20%) is also pointed out. A strength level of alloyed maraging steels can be achieved by changes in chemical composition and by proper heat treatments of low- and medium-alloyed steels

  3. Fe-Cr-Ni system alloys

    International Nuclear Information System (INIS)

    Levin, F.L.

    1986-01-01

    Phase diagram of Fe-Cr-Ni system, which is the basic one for production of corrosion resistant alloys, is considered. Data on corrosion resistance of such alloys are correlated depending on a number of factors: quality and composition of modifying elements, corrosion medium, temperature, alloy structure, mechanical and thermal treatment. Grades of Fe-Ni-Cr alloys are presented, and fields of their application are pointed out

  4. Diagnostic evaluatuin of gastrointestinal tumors; Diagnostik bei Tumoren im Gastrointestinaltrakt

    Energy Technology Data Exchange (ETDEWEB)

    Linke, R.; Tatsch, K. [Ludwig-Maximilians-Univ. Muenchen (Germany). Klinik und Poliklinik fuer Nuklearmedizin

    1998-07-01

    neuere radiologische Verfahren auch den Nachweis von Laesionen <1 cm erlaubt. Die PET weist hier ebenfalls eine hohe Sensitivitaet auf, da sich bei einem gesteigerten Glukosemetabolismus auch sehr kleine Herde darstellen lassen. Das sensitivste Verfahren zum Nachweis von Pankreastumoren ist die Endosonographie. Die Frage der Dignitaet kann meist mit der ERCP geklaert werden, aber auch die PET hat hier ihren Stellenwert, insbesondere bei der schwierigen Differentialdiagnose zwischen chronischer Pankreatitis und dem Pankreaskarzinom. Zur OP-Planung ist die konventionelle radiologische Bildgebung unerlaesslich. Bei der Beurteilung der Resektabilitaet kommt es mit der CT oder MRT jedoch in bis zu 40% der Faelle zu Fehleinschaetzungen. Die PET hat auch hier eine wesentlich hoehere Sensitivitaet im Metastasennachweis. (orig.)

  5. Multiprofessionelle Ausbildung im Medizinstudium [Multiprofessional training in medical education

    Directory of Open Access Journals (Sweden)

    Stößel, Ulrich

    2006-05-01

    Full Text Available [english] The MESOP-project - Intredisciplinary cooperation in the health care system (Medicne, Social work, Nursery, which was funded by the ministery for science, research and arts of the Land Baden-Wuerttemberg for the years 1997-2000 aimed amongst others at the development and proving of new teaching and learning modules for health care and social professions. Based on an analysis of comparable former teaching efforts and giving some disambiguation for the terms interdisciplinarity and multiproessionality, this article describes a teaching project which was designed across the borders of the participating universities. Together students from medical faculty of the university of Freiburg (n=59 and students from the university of applied sciences for social work of Esslingen (n=61 took part in several weekend seminaries, which focussed the topic of interdisciplinary cooperation in the health care and social welfare system. The contribution describes the development of this teaching concept during several years of proving and the design of the evaluation process and instruments, which mainly was based on standardised questionnaires and an additional open discussion. The detailed report about the results of the evaluation and their interpretation do not allow to jump to conclusions concerning the transfer into regular teaching practice. But it gets obvious that students from both faculty claim for the integration of this topic into their education. Therefore it seems to be necessary to strengthen the knowledge about other health professionals and to give the possibility of practical exercises for cooperation [german] Das Projekt MESOP - Interdisziplinäre Kooperation im Gesundheitswesen (Medizin, Soziale Arbeit, Pflege, das vom Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg von 1997-2000 gefördert wurde, diente u.a. der Entwicklung und Erprobung neuer Lehr- und Lernformen für Gesundheits- und Sozialberufe. Anknüpfend an

  6. Sinnvolle Lebensführung im Spannungsfeld von Risiko und Sicherheit Die Ethik der Risikominimierung im Lichte von Kierkegaards und Nietzsches Kritik der Moderne

    Directory of Open Access Journals (Sweden)

    Hüsch Sebastian

    2016-07-01

    Full Text Available Der Beitrag betrachtet die für die Gegenwartsgesellschaft charakteristische Orientierung an Sicherheit und Risikovermeidung vor dem Hintergrund der Reflexionen Søren Kierkegaards und Friedrich Nietzsches bezüglich der Abgründigkeit der menschlichen Existenz. Die Untersuchung wirft die Frage auf, ob die Suche nach einem im alltäglichen Sinne verstandenen „guten Leben“ letzten Endes zu Lasten der Möglichkeiten einer als sinnhaft erlebten Existenz geht.

  7. Mechanical behaviour of aluminium-lithium alloys

    Indian Academy of Sciences (India)

    Aluminium-lithium alloys hold promise of providing a breakthrough response to the crying need for lightweight alloys for use as structurals in aerospace applications. Considerable worldwide research has gone into developing a range of these alloys over the last three decades. As a result, substantial understanding has ...

  8. Corrosion Behaviour of New Zr Alloys

    DEFF Research Database (Denmark)

    Tolksdorf, E.

    1974-01-01

    Corrosion studies have indicated that the most promising replacements for Zicaloy-2 are ZrCrFe, ZrVFe and probably ZrNbTa, provided they are in their optimized condition. These alloys are conventionally manufactured alloys. An internally oxidized ZrMgO alloy is even superior, from the corrosion...

  9. Ti-Pt Alloys form mechanical milling

    CSIR Research Space (South Africa)

    Nxumalo, S

    2009-12-01

    Full Text Available C maximum in these alloys. A few researchers have studied the martensitic transformation in TiPt alloys using arc melted cast samples. In this work high temperature shape memory alloys are targeted using powder metallurgy as a processing route....

  10. 76 FR 79217 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2011-12-21

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on November 28....C. 4301 et seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications..., have been added as parties to this venture. Also, Inclusive Design Research Center, Toronto, Ontario...

  11. 77 FR 54611 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2012-09-05

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on July 16, 2012... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications...; and Lightbox Education, Cheadle, UNITED KINGDOM, have withdrawn as parties to this venture. No other...

  12. 76 FR 34252 - Notice Pursuant to the National Cooperative Research and Production Act of 1993; IMS Global...

    Science.gov (United States)

    2011-06-13

    ... Production Act of 1993; IMS Global Learning Consortium, Inc. Notice is hereby given that, on May 9, 2011... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications... Education, Hamar, Norway, have been added as parties to this venture. Also, CTUnion, Seoul, Republic of...

  13. 75 FR 64694 - Approval for Expanded Manufacturing Authority; Foreign-Trade Subzone 33E; DNP IMS America...

    Science.gov (United States)

    2010-10-20

    ... Manufacturing Authority; Foreign-Trade Subzone 33E; DNP IMS America Corporation (Thermal Transfer Ribbon Printer..., grantee of FTZ 33, has requested an expansion of the scope of manufacturing authority on behalf of DNP IMS...-6636, 2/10/2010) and the application has been processed pursuant to the FTZ Act and the Board's...

  14. Season of infectious mononucleosis and risk of multiple sclerosis at different latitudes; the EnvIMS Study.

    Science.gov (United States)

    Lossius, Andreas; Riise, Trond; Pugliatti, Maura; Bjørnevik, Kjetil; Casetta, Ilaria; Drulovic, Jelena; Granieri, Enrico; Kampman, Margitta T; Landtblom, Anne-Marie; Lauer, Klaus; Magalhaes, Sandra; Myhr, Kjell-Morten; Pekmezovic, Tatjana; Wesnes, Kristin; Wolfson, Christina; Holmøy, Trygve

    2014-05-01

    Seasonal fluctuations in solar radiation and vitamin D levels could modulate the immune response against Epstein-Barr virus (EBV) infection and influence the subsequent risk of multiple sclerosis (MS). Altogether 1660 MS patients and 3050 controls from Norway and Italy participating in the multinational case-control study of Environmental Factors In Multiple Sclerosis (EnvIMS) reported season of past infectious mononucleosis (IM). IM was generally reported more frequently in Norway (p=0.002), but was associated with MS to a similar degree in Norway (odds ratio (OR) 2.12, 95% confidence interval (CI) 1.64-2.73) and Italy (OR 1.72, 95% CI 1.17-2.52). For all participants, there was a higher reported frequency of IM during spring compared to fall (p<0.0005). Stratified by season of IM, the ORs for MS were 1.58 in spring (95% CI 1.08-2.31), 2.26 in summer (95% CI 1.46-3.51), 2.86 in fall (95% CI 1.69-4.85) and 2.30 in winter (95% CI 1.45-3.66). IM is associated with MS independently of season, and the association is not stronger for IM during spring, when vitamin D levels reach nadir. The distribution of IM may point towards a correlation with solar radiation or other factors with a similar latitudinal and seasonal variation.

  15. 76 FR 18797 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2011-04-05

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on March 3, 2011... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications... Centre for ICT in Education, Hamar, NORWAY, has been added as a party to this venture. Also, Horizon...

  16. 77 FR 34069 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2012-06-08

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on May 2, 2012... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications... Education has changed its name to Ellucian, Malvern, PA. No other changes have been made in either the...

  17. 77 FR 12881 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2012-03-02

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on February 6, 2012... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications..., Plano, TX; Keller ISD, Keller, TX; Maryland State Department of Education, Baltimore, MD; Measured...

  18. 75 FR 51114 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2010-08-18

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on July 13, 2010... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications...; New York City Department of Education, New York, NY; and Ucompass.com , Inc., Tallahassee, FL, have...

  19. MIP-based enhanced mid-session macro-mobility for IMS-controlled state-full applications

    DEFF Research Database (Denmark)

    Renier, Thibault Julien; Fathi, Hanane; Schwefel, Hans-Peter

    2007-01-01

    , e.g., block unauthorized visiting users. The 3GPP IP Multimedia Subsystem (IMS) is a platform standardized towards network-independent access and session control. The current IMS specifications do not allow for any change of the user's current IP address during an ongoing session, which prevents...

  20. Magnesium and related low alloys

    International Nuclear Information System (INIS)

    Bernard, J.; Caillat, R.; Darras, R.

    1959-01-01

    In the first part the authors examine the comparative corrosion of commercial magnesium, of a magnesium-zirconium alloy (0,4 per cent ≤ Zr ≤ 0,7 per cent) of a ternary magnesium-zinc-zirconium alloy (0,8 per cent ≤ Zn ≤ 1,2 per cent) and of english 'Magnox type' alloys, in dry carbon dioxide-free air, in damp carbon dioxide-free air, and in dry and damp carbon dioxide, at temperatures from 300 to 600 deg. C. In the second part the structural stability of these materials is studied after annealings, of 10 to 1000 hours at 300 to 450 deg. C. Variations in grain after these heat treatments and mechanical stretching properties at room temperature are presented. Finally various creep rate and life time diagrams are given for these materials, for temperatures ranging from 300 to 450 deg. C. (author) [fr

  1. Chloride removal from plutonium alloy

    International Nuclear Information System (INIS)

    Holcomb, H.P.

    1983-01-01

    SRP is evaluating a program to recover plutonium from a metallic alloy that will contain chloride salt impurities. Removal of chloride to sufficiently low levels to prevent damaging corrosion to canyon equipment is feasible as a head-end step following dissolution. Silver nitrate and mercurous nitrate were each successfully used in laboratory tests to remove chloride from simulated alloy dissolver solution containing plutonium. Levels less than 10 ppM chloride were achieved in the supernates over the precipitated and centrifuged insoluble salts. Also, less than 0.05% loss of plutonium in the +3, +4, or +6 oxidation states was incurred via precipitate carrying. These results provide impetus for further study and development of a plant-scale process to recover plutonium from metal alloy at SRP

  2. Development of a plug-type IMS-MS instrument and its applications in resolving problems existing in in-situ detection of illicit drugs and explosives by IMS.

    Science.gov (United States)

    Du, Zhenxia; Sun, Tangqiang; Zhao, Jianan; Wang, Di; Zhang, Zhongxia; Yu, Wenlian

    2018-07-01

    Ion mobility spectrometry (IMS) which acts as a rapid analysis technique is widely used in the field detection of illicit drugs and explosives. Due to limited separation abilities of the pint-sized IMS challenges and problems still exist regarding high false positive and false negative responses due to the interference of the matrix. In addition, the gas-phase ion chemistry and special phenomena in the IMS spectra, such one substance showing two peaks, were not identified unambiguously. In order to explain or resolve these questions, in this paper, an ion mobility spectrometry was coupled to a mass spectrometry (IMS-MS). A commercial IMS is embedded in a custom-built ion chamber shell was attached to the mass spectrometer. The faraday plate of IMS was fabricated with a hole for the ions to passing through to the mass spectrometer. The ion transmission efficiency of IMS-MS was optimized by optimizing the various parameters, especially the distance between the faraday plate and the cone of mass spectrum. This design keeps the integrity of the two original instruments and the mass spectrometry still works with multimode ionization source (i.e., IMS-MS, ESI-MS, APCI-MS modes). The illicit drugs and explosive samples were analyzed by the IMS-MS with 63 Ni source. The results showed that the IMS-MS is of high sensitivity. The ionization mechanism of the illicit drug and explosive samples with 63 Ni source were systematically studied. In addition, the interferent which interfered the detection of cocaine was identified as dibutyl phthalate (DBP) by this platform. The reason why the acetone solution of amphetamine showed two peaks was explained. Copyright © 2018 Elsevier B.V. All rights reserved.

  3. Alloy phase stability and design

    International Nuclear Information System (INIS)

    Stocks, G.M.; Pope, E.P.; Giamei, A.F.

    1991-01-01

    At the level of basic quantum theory the papers in this symposium reflect the great progress that has been made in understanding the physical properties of both ordered and disordered alloys based on Density Functional Theory (DFT). DFT provides a quantitative parameter-free (often referred to as first principles) theory of the ground state properties of these systems. This general approach has also been used in combination with classical elasticity and dislocation theory to provide the first quantitative understanding of some of the mechanical properties of intermetallic alloys. Recent advances have built on DFT theory to provide the first glimpses of a theory of the finite temperature phase stability of alloys. It is the strength of these first principles theories that the understanding of materials properties is in terms of the underlying electronic structure. At the level of atomistic simulation, based on semi-empirical potentials, again much progress has been made in understanding the properties of extended defects such as grain boundaries and dislocations. On the experimental front increasingly sophisticated tools are being brought to bear in order to understand both the underlying electronic structure and detailed atomic arrangements. This information, together with input from theory, is playing an increasing role in guiding alloy design efforts. At the more practical level a number of these sophisticated alloy design efforts have in recent years produced impressive results across a broad front. The properties of existing materials are continually being improved and new ones developed. Often this progress is based on a deeper understanding of the properties at the atomistic and electronic level. The design of new ordered intermetallic alloys that have reached or are reaching commercialization represents one of the major achievements of this investment of intellectual resources

  4. Theoretical studies of metallic alloys

    International Nuclear Information System (INIS)

    Faulkner, J.S.; Wille, L.T.

    1991-07-01

    A new method to predict and understand the structure and phase stability of solid-solution alloys from a knowledge only of the atomic numbers of the constituent atoms is being developed. The coherent potential approximation will be used to obtain the electronic contribution to the energy and the Monte Carlo method of statistical mechanics will be used for the thermodynamic part of the calculation. An improved coherent potential approximation will be developed by combining the standard approach with the quadratic KKR (QKKR) band theory method. This will make it easier to predict the properties of alloys from first principles. The QKKR method will be developed further

  5. PROCESS OF DISSOLVING ZIRCONIUM ALLOYS

    Science.gov (United States)

    Shor, R.S.; Vogler, S.

    1958-01-21

    A process is described for dissolving binary zirconium-uranium alloys where the uranium content is about 2%. In prior dissolution procedures for these alloys, an oxidizing agent was added to prevent the precipitation of uranium tetrafluoride. In the present method complete dissolution is accomplished without the use of the oxidizing agent by using only the stoichiometric amount or slight excess of HF required by the zirconium. The concentration of the acid may range from 2M to 10M and the dissolution is advatageously carried out at a temperature of 80 deg C.

  6. Hydrogen effects in aluminum alloys

    International Nuclear Information System (INIS)

    Louthan, M.R. Jr.; Caskey, G.R. Jr.; Dexter, A.H.

    1976-01-01

    The permeability of six commercial aluminum alloys to deuterium and tritium was determined by several techniques. Surface films inhibited permeation under most conditions; however, contact with lithium deuteride during the tests minimized the surface effects. Under these conditions phi/sub D 2 / = 1.9 x 10 -2 exp (--22,400/RT) cc (NTP)atm/sup -- 1 / 2 / s -1 cm -1 . The six alloys were also tested before, during, and after exposure to high pressure hydrogen, and no hydrogen-induced effects on the tensile properties were observed

  7. Phosphorus containing sintered alloys (review)

    International Nuclear Information System (INIS)

    Muchnik, S.V.

    1984-01-01

    Phosphorus additives are considered for their effect on the properties of sintered alloys of different applications: structural, antifriction, friction, magnetic, hard, superhard, heavy etc. Data are presented on compositions and properties of phosphorus-containing materials produced by the powder metallurgy method. Phosphorus is shown to be an effective activator of sintering in some cases. When its concentration in the material is optimal it imparts the material such properties as strength, viscosity, hardness, wear resistance. Problems concerning powder metallurgy of amorphous phosphorus-containing alloys are reported

  8. Hot workability of aluminium alloys

    International Nuclear Information System (INIS)

    Yoo, Yeon Chul; Oh, Kyung Jin

    1986-01-01

    Hot Workability of aluminium alloys, 2024, 6061 and 7075, has been studied by hot torsion tests at temperatures from 320 to 515 deg C and at strain rates from 1.26 x 10 -3 to 5.71 x 10 -3 sec -1 . Hot working condition of these aluminium alloys was determined quantitatively from the constitutive equations obtained from flow stress curves in torsion. Experimental data of the logarith of the Zener-Hollomonn parameter showed good linear relationships to the logarith of sinh(ασ-bar)

  9. [Microbiological corrosion of aluminum alloys].

    Science.gov (United States)

    Smirnov, V F; Belov, D V; Sokolova, T N; Kuzina, O V; Kartashov, V R

    2008-01-01

    Biological corrosion of ADO quality aluminum and aluminum-based construction materials (alloys V65, D16, and D16T) was studied. Thirteen microscopic fungus species and six bacterial species proved to be able to attack aluminum and its alloys. It was found that biocorrosion of metals by microscopic fungi and bacteria was mediated by certain exometabolites. Experiments on biocorrosion of the materials by the microscopic fungus Alternaria alternata, the most active biodegrader, demonstrated that the micromycete attack started with the appearance of exudate with pH 8-9 on end faces of the samples.

  10. Mechanical properties of ordered alloys

    International Nuclear Information System (INIS)

    Kroupa, F.

    1977-06-01

    A survey is given of the metallophysical fundamentals of the mechanical properties of ordered two-phase alloys. Alloys of this type have a superlattice structure in a substitution mixed crystal. Ordering is achieved by slow cooling or by annealing below the critical temperature, during which ordering domains (antiphase domains) are formed. At a high degree of ordering, the dislocations are concentrated to form pairs, so-called super-dislocations. The mechanical properties may be selectively changed by varying different parameters (size of the ordering domains, degree of ordering, energy of the antiphase boundaries) by a special composition and heat treatment.(GSC) [de

  11. Images and society (or Images, Society and its Decoding Las imágenes y la sociedad (o las imágenes, la sociedad y su desciframiento

    Directory of Open Access Journals (Sweden)

    Juan Soto Ramírez

    2012-11-01

    Full Text Available

    Common sense, the thinking of the people par excellence, asserts that: a picture is worth a thousand words. This is a big mistake. The images are not carriers of meanings. The images always go through three basic processes are: production, circulation and reception. These processes are always determined in the time and social space. They are always the result of multiple relationships (social, ideological, political, moral, religious, etc., established with them. Always there are so many elements beyond the image, which determines its meaning. The meaning of an image always depends on the relationships established with it in a historical time and space, socially and culturally determined. The images are never alone. To decrypt their meanings, you must first know the symbolic life of the societies in which they appear. Images do not have a single meaning because it depends on the historical and cultural geography which presents. The images always have a close relationship with the society they were born. The Muhammad cartoons not offend everyone equally.


    El sentido común, que es el pensamiento de las colectividades por excelencia, afirma que: una imagen dice más que mil palabras. Lo cual es un grave error. Las imágenes no son portadoras de significados. Las imágenes siempre atraviesan por tres procesos básicos que son: su producción, su circulación y su recepción. Estos procesos siempre están determinados en el tiempo y en el espacio sociales. Su significado siempre es el resultado de múltiples relaciones (sociales, ideológicas, políticas, morales, religiosas, etc., que se establecen con las mismas. Es decir, siempre existen elementos que están más allá de la imagen, que determinan su significado. La manera en cómo se significa una imagen, siempre depende de las relaciones que se establecen con ella en un tiempo histórico y en un espacio, social y culturalmente determinado. Las imágenes nunca están solas. Para

  12. Imparting passivity to vapor deposited magnesium alloys

    Science.gov (United States)

    Wolfe, Ryan C.

    Magnesium has the lowest density of all structural metals. Utilization of low density materials is advantageous from a design standpoint, because lower weight translates into improved performance of engineered products (i.e., notebook computers are more portable, vehicles achieve better gas mileage, and aircraft can carry more payload). Despite their low density and high strength to weight ratio, however, the widespread implementation of magnesium alloys is currently hindered by their relatively poor corrosion resistance. The objective of this research dissertation is to develop a scientific basis for the creation of a corrosion resistant magnesium alloy. The corrosion resistance of magnesium alloys is affected by several interrelated factors. Among these are alloying, microstructure, impurities, galvanic corrosion effects, and service conditions, among others. Alloying and modification of the microstructure are primary approaches to controlling corrosion. Furthermore, nonequilibrium alloying of magnesium via physical vapor deposition allows for the formation of single-phase magnesium alloys with supersaturated concentrations of passivity-enhancing elements. The microstructure and surface morphology is also modifiable during physical vapor deposition through the variation of evaporation power, pressure, temperature, ion bombardment, and the source-to-substrate distance. Aluminum, titanium, yttrium, and zirconium were initially chosen as candidates likely to impart passivity on vapor deposited magnesium alloys. Prior to this research, alloys of this type have never before been produced, much less studied. All of these metals were observed to afford some degree of corrosion resistance to magnesium. Due to the especially promising results from nonequilibrium alloying of magnesium with yttrium and titanium, the ternary magnesium-yttrium-titanium system was investigated in depth. While all of the alloys are lustrous, surface morphology is observed under the scanning

  13. Internal nitridation of nickel-base alloys; Innere Nitrierung von Nickelbasis-Legierungen

    Energy Technology Data Exchange (ETDEWEB)

    Krupp, U.; Christ, H.J. [Siegen Univ. (Gesamthochschule) (Germany). Inst. fuer Werkstofftechnik

    1998-12-31

    The chromuim concentration is the crucial variable in nitridation processes in nickel-base alloys. Extensive nitridation experiments with various specimen alloys of the system Ni-Cr-Al-Ti have shown that the Cr itself starts to form nitrides as from elevated initial concentrations of about 10 to 20 weight%, (depending on temperature), but that lower concentrations have an earlier effect in that they induce a considerable increase in the N-solubility of the nickel-base alloys. This causes an accelerated nitridation attack on the alloying elements Ti and Al. Apart from experimental detection and analysis, the phenomenon of internal nitridation could be described as well by means of a mathematical model calculating the diffusion with the finite-differences method and determining the precipitation thermodynamics by way of integrated equilibrium calculations. (orig./CB) [Deutsch] Im Verlauf der Hochtemperaturkorrosion von Nickelbasis-Superlegierungen kann durch beanspruchungsbedingte Schaedigungen der Oxiddeckschicht ein Verlust der Schutzwirkung erfolgen und als Konsequenz Stickstoff aus der Atmosphaere in den Werkstoff eindringen. Der eindiffundierende Stickstoff bildet vor allem mit den Legierungselementen Al, Cr und Ti Nitridausscheidungen, die zu einer relativ rasch fortschreitenden Schaedigung fuehren koennen. Eine bedeutende Rolle bei diesen Nitrierungsprozessen in Nickelbasislegierungen spielt die Cr-Konzentration in der Legierung. So ergaben umfangreiche Nitrierungsexperimente an verschiedenen Modellegierungen des Systems Ni-Cr-Al-Ti, dass Cr zwar selbst erst ab Ausgangskonzentrationen von ca. 10-20 Gew.% (abhaengig von der Temperatur) Nitride bildet, allerdings bereits bei geringen Konzentrationen die N-Loeslichkeit von Nickelbasis-Legierungen entscheidend erhoeht. Dies hat zur Folge, dass es zu einem beschleunigten Nitrierungsangriff auf die Legierungselemente Ti und Al kommt. Neben den experimentellen Untersuchungen konnte das Phaenomen der inneren

  14. ZIRCONIUM-TITANIUM-BERYLLIUM BRAZING ALLOY

    Science.gov (United States)

    Gilliland, R.G.; Patriarca, P.; Slaughter, G.M.; Williams, L.C.

    1962-06-12

    A new and improved ternary alloy is described which is of particular utility in braze-bonding parts made of a refractory metal selected from Group IV, V, and VI of the periodic table and alloys containing said metal as a predominating alloying ingredient. The brazing alloy contains, by weight, 40 to 50 per cent zirconium, 40 to 50 per cent titanium, and the balance beryllium in amounts ranging from 1 to 20 per cent, said alloy having a melting point in the range 950 to 1400 deg C. (AEC)

  15. An introduction to surface alloying of metals

    CERN Document Server

    Hosmani, Santosh S; Goyal, Rajendra Kumar

    2014-01-01

    An Introduction to Surface Alloying of Metals aims to serve as a primer to the basic aspects of surface alloying of metals. The book serves to elucidate fundamentals of surface modification and their engineering applications. The book starts with basics of surface alloying and goes on to cover key surface alloying methods, such as carburizing, nitriding, chromizing, duplex treatment, and the characterization of surface layers. The book will prove useful to students at both the undergraduate and graduate levels, as also to researchers and practitioners looking for a quick introduction to surface alloying.

  16. Protective claddings for high strength chromium alloys

    Science.gov (United States)

    Collins, J. F.

    1971-01-01

    The application of a Cr-Y-Hf-Th alloy as a protective cladding for a high strength chromium alloy was investigated for its effectiveness in inhibiting nitrogen embrittlement of a core alloy. Cladding was accomplished by a combination of hot gas pressure bonding and roll cladding techniques. Based on bend DBTT, the cladding alloy was effective in inhibiting nitrogen embrittlement of the chromium core alloy for up to 720 ks (200hours) in air at 1422 K (2100 F). A significant increase in the bend DBTT occurred with longer time exposures at 1422 K or short time exposures at 1589 K (2400 F).

  17. Hydrogen effects in nitrogen-alloyed austenitic steels; Wirkung von Wasserstoff in stickstofflegierten austenitischen Staehlen

    Energy Technology Data Exchange (ETDEWEB)

    Uhlemann, M.; Mummert, K. [Institut fuer Festkoerper- und Werkstofforschung Dresden e.V. (Germany); Shehata, M.F. [National Research Centre, Cairo (Egypt)

    1998-12-31

    Hydrogen increases the yield strength of nitrogen-alloyed steels, but on the other hand adversely affects properties such as tensile strength and elongation to fracture. The effect is enhanced with increasing nitrogen and hydrogen contents. Under the effect of hydrogen addition, the discontinuous stress-strain characteristic and the distinct elongation limit of hydrogen-free, nitrogen containing steels is no longer observed in the material. This change of mechanical properties is attributed to an interatomic interaction of nitrogen and hydrogen in the lattice, which is shown for instance by such effects as reduction of hydrogen velocity, high solubility, and a particularly strong lattice expansion. The nature of this interaction of nitrogen and hydrogen in the fcc lattice remains to be identified. (orig./CB) [Deutsch] Wasserstoff fuehrt in stickstofflegierten Staehlen zu einer Erhoehung der Streckgrenze, aber gleichzeitig zu einer Abnahme der Zugfestigkeit und Bruchdehnung. Dieser Effekt verstaerkt sich mit zunehmenden Stickstoff- und Wasserstoffgehalten. Ein diskontinuierlicher Spannungs-Dehnungsverlauf mit einer ausgepraegten Streckgrenze in wasserstofffreien hochstickstoffhaltigen Staehlen wird nach Wasserstoffeinfluss nicht mehr beobachtet. Die Aenderung der mechanischen Eigenschaften, wird auf eine interatomare Wechselwirkung von Stickstoff und Wasserstoff im Gitter zurueckgefuehrt, die sich u.a. in geringer Wasserstoffdiffusionsgeschwindigkeit, hoher Loeslichkeit und vor allem in extremer Gitteraufweitung aeussert. Insgesamt ist die Natur der Wechselwirkung zwischen Stickstoff und Wasserstoff im kfz Gitter noch nicht aufgeklaert. (orig.)

  18. The Aries Program with emphasis on the International Magnetospherics Studies /IMS/-Porcupine Project

    Science.gov (United States)

    Honecker, H. J.

    1976-01-01

    This paper will discuss the present state of the development of the Aries Sounding Rocket System with particular emphasis on the configuration and subsystems required to support the IMS Program. A brief history of the development program will be presented. The results of the first five flights, three successes and two failures, will be presented and the observed performance compared to theoretical performance.

  19. Strukturelle Methoden zur durchgängigen Diagnose digitaler Automobil-Elektronik im Feld

    OpenAIRE

    Cook, Alejandro

    2014-01-01

    Die Fahrzeugtechnik nutzt die aktuellen Entwicklungen der Halbleiterindustrie, um Kunden eine enorme Anzahl ansprechender, komplexer Produkteigenschaften zu bieten. Da traditionelle, funktionale Testverfahren nicht mehr ausreichen, um den diagnostischen Anforderungen im Automobilbereich gerecht zu werden, wird die Analyse von Halbleiterdefekten zu einem wichtigen Aspekt der Qualitätssicherung. Strukturelle Testverfahren stellen bereits eine Schlüsseltechnologie für die erfolgreiche Herstel...

  20. Report of the Results of an IMS LEarning Design Expert Workshop

    NARCIS (Netherlands)

    Neumann, Susanne; Klebl, Michael; Griffiths, David; Hernández-Leo, Davinia; De la Fuente-Valentin, Luis; Hummel, Hans; Brouns, Francis; Derntl, Michael; Oberhuemer, Petra

    2009-01-01

    Neumann, S., Klebl, M., Griffiths, D., Hernández-Leo, D., de la Fuente Valentín, L., Hummel, H., Brouns, F., Derntl, M., & Oberhuemer, P. (2010). Report of the Results of an IMS Learning Design Expert Workshop. International Journal Of Emerging Technologies In Learning (IJET), 5(1), pp.

  1. Low-SNR Capacity of Parallel IM-DD Optical Wireless Channels

    KAUST Repository

    Chaaban, Anas; Rezki, Zouheir; Alouini, Mohamed-Slim

    2016-01-01

    The capacity of parallel intensity-modulation and direct-detection (IM-DD) optical wireless channels with total average intensity and per-channel peak intensity constraints is studied. The optimal intensity allocation at low signal-to-noise ratio

  2. A Chinese translation of IMS Learning Design Best Practice and Implementation Guide (draft)

    NARCIS (Netherlands)

    Gong, Yufeng

    2006-01-01

    Many Chinese researchers, system developers and e-learning practitioners have difficulties to understand IMS LD correctly because of language barriers. The main aim of this translation is to help chinese people to overcome the difficulties. It is also expected that this translation can launch into a

  3. Die Alpen als "Berg von Leichen und Schmerz" - Erinnerung und Dialog im literarischen Raum Elfriede Jelineks

    DEFF Research Database (Denmark)

    Ortner, Jessica

    2014-01-01

    “ Räumlichkeit im Sinne Gérard Genettes, die „bedeutete“ Landschaft der Alpen zu einer Gedächtnisarchitektur umbildet. In ihren Texten stellt Jelinek zwei grundsätzlich verschiedene Semantisierungen der Alpen in ein dialogisches Verhältnis (Bachtin): Die Semantisierung der Alpen als Touristenparadies und...

  4. imDEV: a graphical user interface to R multivariate analysis tools in Microsoft Excel

    Science.gov (United States)

    Interactive modules for data exploration and visualization (imDEV) is a Microsoft Excel spreadsheet embedded application providing an integrated environment for the analysis of omics data sets with a user-friendly interface. Individual modules were designed to provide toolsets to enable interactive ...

  5. Adaptive e-learning methods and IMS Learning Design. An integrated approach

    NARCIS (Netherlands)

    Burgos, Daniel; Specht, Marcus

    2006-01-01

    Please, cite this publication as: Burgos, D., & Specht, M. (2006). Adaptive e-learning methods and IMS Learning Design. In Kinshuk, R. Koper, P. Kommers, P. Kirschner, D. G. Sampson & W. Didderen (Eds.), Proceedings of the 6th IEEE International Conference on Advanced Learning Technologies (pp.

  6. How IMS Enables Converged Services for Cable and 3G Technologies: A Survey

    Directory of Open Access Journals (Sweden)

    Mani Mehdi

    2008-01-01

    Full Text Available The IP multimedia subsystem (IMS is a service control overlay standardized by the 3GPP. The IMS is based on session initiation protocol (SIP to establish, modify, and terminate the sessions. It provides a clean separation between services, signaling, and media with the potential to enable control and management of services over multiple transport technologies. In the scope of fixed-mobile convergence, this paper is dedicated to presenting a review of how cable networks can be integrated into IMS technology to achieve 3G-cable horizontal convergence. Cable networks, as one of the major fixed broadband access technologies with PacketCable architecture, are able to provide broadband internet access and VoIP in addition to cable TV. In this article, we review the evolution in PacketCable architecture to take up IMS. In this way, we consider the standardization and research activities to address this integration. We review some important challenges such as SIP protocol compatibility, defining unique user profile, required enhancement in authentication process, QoS and charging system.

  7. Multimedia adaptation with SIP resource availability signalling in IMS-networks

    NARCIS (Netherlands)

    Ozcelebi, T.; Radovanovic, I.

    2007-01-01

    Unlicensed, nondedicated and nondeterministic computer access networks are included in IP multimedia subsystem (IMS) in addition to the operator core network, which arises new end-to-end quality-of-service (QoS) issues for multimedia streaming. The resource availability of the network and the

  8. Facilitating mobile service provisioning in IP Multimedia Subsystem (IMS) using service oriented architecture

    NARCIS (Netherlands)

    Radovanovic, I.; Ray, A.; Lukkien, J.J.; Chaudron, M.R.V.; Krämer, B.J.; Lin, K.J.; Narasimhan, P.

    2007-01-01

    This paper presents an extension of the IMS software architecture using a service orientation, which provides flexibility of mobile service provisioning. The suggested extension facilitates composition of new mobile services in run-time based on the existing services and enables the end users to

  9. How IMS Enables Converged Services for Cable and 3G Technologies: A Survey

    Directory of Open Access Journals (Sweden)

    Noël Crespi

    2008-04-01

    Full Text Available The IP multimedia subsystem (IMS is a service control overlay standardized by the 3GPP. The IMS is based on session initiation protocol (SIP to establish, modify, and terminate the sessions. It provides a clean separation between services, signaling, and media with the potential to enable control and management of services over multiple transport technologies. In the scope of fixed-mobile convergence, this paper is dedicated to presenting a review of how cable networks can be integrated into IMS technology to achieve 3G-cable horizontal convergence. Cable networks, as one of the major fixed broadband access technologies with PacketCable architecture, are able to provide broadband internet access and VoIP in addition to cable TV. In this article, we review the evolution in PacketCable architecture to take up IMS. In this way, we consider the standardization and research activities to address this integration. We review some important challenges such as SIP protocol compatibility, defining unique user profile, required enhancement in authentication process, QoS and charging system.

  10. Mluvené slovo J. V. Šimáka

    Czech Academy of Sciences Publication Activity Database

    Kábová, Hana

    2011-01-01

    Roč. 28, č. 0 (2011), s. 63-74 ISSN 1211-8184 Institutional support: RVO:67985921 Keywords : Šimák, Josef Vítězslav * Czech historiography * popularisation of scientific knowledge Subject RIV: AB - History

  11. Sanktionen im Ukraine-Konflikt: Ein Ringen mit vielschichtigen Realitäten

    DEFF Research Database (Denmark)

    Jaeger, Mark Daniel

    2014-01-01

    Sanktionen als Instrument der Außenpolitik sind besonders bedroht von Pauschalisierungen. Politik und Öffentlichkeit verlangen oftmals nach klaren Antworten und eindeutigen Vorhersagen – auch im Zuge ihres jüngst zunehmenden Einsatzes in der Ukraine-Krise. Überzogenen Hoffnungen, Sanktionen mögen...

  12. What's the frequency, Kenneth? – Eine (queerfeministische Kritik an Sexismen und Rassismen im Schlagwortkatalog

    Directory of Open Access Journals (Sweden)

    Sandra Sparber

    2016-09-01

    Full Text Available Sprachliche Diskriminierungen bilden sich auf verschiedenen Ebenen im Schlagwortkatalog ab. In unterschiedlichen Ausprägungen finden wir sie sowohl in den Normdaten als auch in der Schlagwortfolge. Ziel des Aufsatzes ist es, die bibliothekarische Inhaltserschließung als soziale Praxis in einen theoretischen Bezugsrahmen einzubetten, um sie einer fundierten Kritik zugänglich zu machen.

  13. Representation of Coordination Mechanisms in IMS Learning Design to Support Group-based Learning

    NARCIS (Netherlands)

    Miao, Yongwu; Burgos, Daniel; Griffiths, David; Koper, Rob

    2007-01-01

    Miao, Y., Burgos, D., Griffiths, D., & Koper, R. (2008). Representation of Coordination Mechanisms in IMS Learning Design to Support Group-based Learning. In L. Lockyer, S. Bennet, S. Agostinho & B. Harper (Eds.), Handbook of Research on Learning Design and Learning Objects: Issues, Applications and

  14. A scalable addressing method when using IMS as a service bus infrastructure

    NARCIS (Netherlands)

    Stokking, H.M.; Hartog, F.T.H. den; Walraven, F.A.

    2009-01-01

    The dynamic provisioning of SIP addresses is a challenge when many devices and services are dynamically attached to an IMS network. Manual provisioning is too labor intensive for a telecommunications operator, and it is difficult to do it in a way that allows those devices and services access to all

  15. Towards personalized TV for concurrent use; unlocking the potential of IMS-based IPTV

    NARCIS (Netherlands)

    Brandenburg, R. van; Deventer, M.O. van; Karagiannis, G.; Schenk, M.

    2009-01-01

    Television (TV) is getting more personal. It went from a passive broadcast medium without any form of personalization or user identification, to subscription TV, interactive TV and now to IPTV, featuring an integrated return channel. IMS-based IPTV is a good example of a personalised IPTV

  16. Towards Personalized TV for Concurrent Use: Unlocking the Potential of IMS-Based IPTV

    NARCIS (Netherlands)

    van Brandenburg, Ray; van Deventer, M. Oskar; Karagiannis, Georgios; Schenk, Mike

    2009-01-01

    Television (TV) is getting more personal. It went from a passive broadcast medium without any form of personalization or user identification, to subscription TV, interactive TV and now to IPTV, featuring an integrated return channel. IMS-based IPTV is a good example of a personalised IPTV

  17. 40 CFR 51.352 - Basic I/M performance standard.

    Science.gov (United States)

    2010-07-01

    ... following model I/M program inputs and local characteristics, such as vehicle mix and local fuel controls... current version of the EPA mobile source emission model, and shall meet the minimum performance standard... specified in 40 CFR part 85, subpart W. (8) Emission control device inspections. None. (9) Stringency. A 20...

  18. I'm a Guy. How Can I Talk to My Female Doctor about Certain Things?

    Science.gov (United States)

    ... Español I'm a Guy. How Can I Talk to My Female Doctor About Certain Things? KidsHealth / ... site. Note: All information on TeensHealth® is for educational purposes only. For specific medical advice, diagnoses, and ...

  19. The implementation of the Plan Esperanza and response to the imPACT Review.

    Science.gov (United States)

    Vidaurre, Tatiana; Santos, Carlos; Gómez, Henry; Sarria, Gustavo; Amorin, Edgar; López, Marga; Regalado, Roxana; Manrique, Javier; Tarco, Duniska; Ayestas, Carlos; Calderón, Mónica; Mas, Luis; Neciosup, Silvia; Salazar, Miriam; Chávez, Juan Carlos; Ubillus, Milward; Limache, Abel; Ubillus, José Carlos; Navarro, Jeannie; Sarwal, Kavita; Sutcliffe, Simon; Gutiérrez-Aguado, Alfonso; Silva, Marianela; Mena, Amalia; Guillén, María Eugenia; Castañeda, Carlos; Abugattas, Julio

    2017-10-01

    Following the implementation of the National Cancer Prevention and Control Results-based Budget Programme (PpR Cancer-024) in 2011, the Peruvian Government approved the Plan Esperanza-a population-based national cancer control plan-in 2012. Legislation that ensured full government-supported funding for people who were otherwise unable to access or afford care and treatment accompanied the Plan. In 2013, the Ministry of Health requested an integrated mission of the Programme of Action for Cancer Therapy (imPACT) report to strengthen cancer control in Peru. The imPACT Review, which was executed in 2014, assessed Peru's achievements in cancer control, and areas for improvement, including cancer control planning, further development of population-based cancer registration, increased prevention, early diagnosis, treatment and palliative care, and the engagement and participation of civil society in the health-care system. This Series paper gives a brief history of the development of the Plan Esperanza, describes the innovative funding model that supports it, and summarises how funds are disseminated on the basis of disease, geography, and demographics. An overview of the imPACT Review, and the government's response in the context of the Plan Esperanza, is provided. The development and execution of the Plan Esperanza and the execution of and response to the imPACT Review demonstrates the Peruvian Government's commitment to fighting cancer across the country, including in remote and urban areas. Copyright © 2017 Elsevier Ltd. All rights reserved.

  20. A Service Oriented Web Application for Learner Knowledge Representation, Management and Sharing Conforming to IMS LIP

    Science.gov (United States)

    Lazarinis, Fotis

    2014-01-01

    iLM is a Web based application for representation, management and sharing of IMS LIP conformant user profiles. The tool is developed using a service oriented architecture with emphasis on the easy data sharing. Data elicitation from user profiles is based on the utilization of XQuery scripts and sharing with other applications is achieved through…

  1. Alexander Kratochvil. Aufbruch und Rückkehr: Ukrainische und tschechische Prosa im Zeichen der Postmoderne.

    Directory of Open Access Journals (Sweden)

    Marko Pavlyshyn

    2015-01-01

    Full Text Available Alexander Kratochvil. Aufbruch und Rückkehr: Ukrainische und tschechische Prosa im Zeichen der Postmoderne. [Venturing Forth and Coming Back: Ukrainian and Czech Prose in the Context of Postmodernity.] Berlin: Kulturverlag Kadmos, 2013. 311 pp. Bibliography. Index. Paper.

  2. IMPACT OF REALIZED IMS SYSTEM IN PRODUCTION AND DISTRIBUTION OF WATER ON QUALITY OF LIFE

    Directory of Open Access Journals (Sweden)

    Gordana Todorović

    2017-03-01

    Full Text Available In this paper from the assessments: the satisfaction of the citizens with the services PUC "Waterworks and Sewerage" and the total time interruption in water supply, appreciating their importance, we carried out the assessment of the implemented IMS PUC "Waterworks and Sewerage" in Kragujevac.

  3. End-to-End Availability Analysis of IMS-Based Networks

    DEFF Research Database (Denmark)

    Kamyod, Chayapol; Nielsen, Rasmus Hjorth; Prasad, Neeli R.

    2013-01-01

    Generation Networks (NGNs). In this paper, an end-to-end availability model is proposed and evaluated using a combination of Reliability Block Diagrams (RBD) and a proposed five-state Markov model. The overall availability for intra- and inter domain communication in IMS is analyzed, and the state...

  4. Engineering and development projects for the sustainment and enhancement of the IMS infrasound network

    Science.gov (United States)

    Marty, J.; Martysevich, P.; Kramer, A.; Haralabus, G.

    2012-04-01

    The Provisional Technical Secretariat (PTS) of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) has a continuous interest in enhancing its capability in infrasound source localization and characterization. This capability is based on the processing of data recorded by the infrasound network of the International Monitoring System (IMS). This infrasound network consists of sixty stations, among which forty-five are already certified and continuously transmit data to the International Data Center (IDC) in Vienna, Austria. Each infrasound station is composed of an array of infrasound sensors capable of measuring micro-pressure changes produced at ground level by infrasonic waves. It is the responsibility of the Engineering and Development Section of the IMS Division to ensure the highest quality for IMS infrasound data. This includes the design of robust and reliable infrasound stations, the use of accurate and calibrated infrasound measuring chains, the installation of efficient wind noise reduction systems and the implementation of quality-control tools. The purpose of this paper is to present ongoing PTS infrasound engineering and development projects related to the testing and validation of wind noise reduction system models, the implementation of infrasound data QC tools, the definition of guidelines for the design of IMS power supply systems and the development of a portable infrasound calibrator and of field kits for site survey and certification.

  5. I'm Sorry "About That": Apologies, Indexicals, and (Unnamed) Offenses

    Science.gov (United States)

    Margutti, Piera; Traverso, Véronique; Pugliese, Rosa

    2016-01-01

    We investigate an apology format, "I'm sorry about it/that," where indexical terms (pronouns) refer to the offense rather than naming it. We identified two subsets in our collection of indexical apologies. In one, indexicals are subsequent either to the offense formulation or to an apology-relevant event; in the second, indexicals are…

  6. "I'm Sorry + Naming the Offense": A Format for Apologizing

    Science.gov (United States)

    Cirillo, Letizia; Colón de Carvajal, Isabel; Ticca, Anna Claudia

    2016-01-01

    The present article focuses on "I'm sorry + naming the offense"-formatted apologies occurring in phone calls in English. Apologies of this kind "emerge" and are oriented to as relevant actions when addressing an apologizable that is not the main business in ongoing talk. The sequential analysis of apologies and responses to…

  7. Gefährlicher Trend : Smartphone im Strassenverkehr : auch zu Fuss ist das Ablenkungspotenzial sehr gross.

    NARCIS (Netherlands)

    2016-01-01

    Viele Menschen, die sich zu Fuß im Straßenverkehr bewegen, nutzen dabei das Smartphone. Dies ist das Ergebnis einer Erhebung von DEKRA in sechs europäischen Hauptstädten. Von den rund 14.000 erfassten Personen nutzten fast 17 Prozent ihr Handy — für Textnachrichten, zum Telefonieren oder Musikhören.

  8. 300 Gb/s IM/DD based SDM-WDM-PON with laserless ONUs

    DEFF Research Database (Denmark)

    Bao, Fangdi; Morioka, Toshio; Oxenløwe, Leif Katsuo

    2018-01-01

    A low-cost, high-speed SDM-WDM-PON architecture is proposed by using a multi-core fiber (MCF) and intensity modulation/directly detection (IM/DD). One of the MCF cores is used for sending laser sources from optical line terminal (OLT) to optical network unit (ONU), thus facilitating laserless...

  9. The (Im)Materiality of Literacy: The Significance of Subjectivity to New Literacies Research

    Science.gov (United States)

    Burnett, Cathy; Merchant, Guy; Pahl, Kate; Rowsell, Jennifer

    2014-01-01

    This article deconstructs the online and offline experience to show its complexities and idiosyncratic nature. It proposes a theoretical framework designed to conceptualise aspects of meaning-making across on- and offline contexts. In arguing for the "(im)materiality" of literacy, it makes four propositions which highlight the complex…

  10. Investigating Perfect Timesharing: The Relationship between IM-Compatible Tasks and Dual-Task Performance

    Science.gov (United States)

    Halvorson, Kimberly M.; Ebner, Herschel; Hazeltine, Eliot

    2013-01-01

    Why are dual-task costs reduced with ideomotor (IM) compatible tasks (Greenwald & Shulman, 1973; Lien, Proctor & Allen, 2002)? In the present experiments, we first examine three different measures of single-task performance (pure single-task blocks, mixed blocks, and long stimulus onset asynchrony [SOA] trials in dual-task blocks) and two…

  11. W8...b4 IM, how did u rite??! Digital Writing in the Composition Classroom

    Science.gov (United States)

    Partridge, Bryan

    2011-01-01

    From word processing computers, to mobile telephones, to the advent of the Internet, and finally to online communication venues like Instant Messenger (IM), the past four decades have brought an increasing prevalence of technology into our culture that is altering the English language. While decried by parents and lamented by teachers, these…

  12. Aplicativo Web para la Fusión de Imágenes Satelitales

    Directory of Open Access Journals (Sweden)

    Javier Medina

    2013-06-01

    Full Text Available En este artículo se implementa un servicio en la Web que ofrece la posibilidad de realizar la fusión de imágenes de satélite. A lo largo del artículo tres temáticas importantes son abordadas. La primera temática corresponde al servicio Web, éste servicio es implementado usando software libre, donde el usuario puede realizar una solicitud del servicio de fusión. La segunda temática se ocupa del análisis de la transformada rápida de Wavelet haar (TRWH. La última temática detalla la metodología, para realizar la fusión de imágenes usando la TRWH. Con el fin de determinar la eficiencia de la TRWH, cinco Wavelets diferentes fueron implementadas para fusionar el mismo par de imágenes satelitales. Las imágenes resultantes fueron evaluadas tanto en la calidad espacial como espectral a través de cuatro índices. Los mejores resultados de la evaluación fueron obtenidos con la TRWH la cual preserva la riqueza espectral y mejora su calidad espacial

  13. A. S. G O. C ullmann , Der Staat im Neuen Testament. J. C . B. Mohr ...

    African Journals Online (AJOL)

    Test

    Dit is nietemin nie die eerste maal dat Cullmann oor die onderwerp skryf nie. Vroeër het daar reeds van hom verskyn, Konigsherrschaft. Christ und Kirche im Neuen Testament, en effens later, Die ersten christliche. Qlaubensbekenntnisse en betreklik onlangs, Christus und die Zeit. In al hierdie werke raak hy fasette van die ...

  14. The Role Of Teachers In Editing And Authoring Units Of Learning Using IMS Learning Design

    NARCIS (Netherlands)

    Griffiths, David; Blat, Josep

    2006-01-01

    The UNFOLD project, funded by the European Commission, runs a Community of Practice for Teachers and Learning Providers that has examined the way in which teachers can work with the IMS Learning Design Specification. The results of this work are presented. Relevant aspects of the specification are

  15. CopperCore: a service based approach towards implementing the IMS Learning Design specification.

    NARCIS (Netherlands)

    Vogten, Hubert

    2006-01-01

    This paper presents a service developed by the Open University of the Netherlands, called CopperCore which implements an IMS Learning Design engine as service. The overall architecture is described including a detailed description of the web service application programming interfaces.

  16. An overview of CTBT verification technologies and status of IMS networks

    International Nuclear Information System (INIS)

    Basham, P.

    2002-01-01

    The CTBT history is described in brief. Nuclear test environments and verification regime are presented with illustrations. Geographical location of seismic, hydroacoustic, infrasound and radionuclide monitoring networks are indicated on globe maps. Benefits of the International Monitoring System (IMS) to host countries are listed

  17. Federal Workforce: Attrition Rates at Ex-Im Bank and Similar Agencies

    National Research Council Canada - National Science Library

    Hess, James

    1997-01-01

    The Ex-Im Bank's mission is to assist U.S. exporters by offering a wide range of financing at terms competitive with those of other governments' export financing agencies and absorbing risks that the private sector is reluctant to cover...

  18. Analisa Karakteristik Teori Antrian pada Jaringan IP Multimedia Subsystem (IMS Menggunakan OPNET Modeler 14.5

    Directory of Open Access Journals (Sweden)

    Eko Fajar Cahyadi

    2015-05-01

    Full Text Available Perkembangan teknologi telekomunikasi yang semakin pesat, membuat para operator dan vendor telekomunikasi harus dapat menyediakan layanan telekomunikasi yang aman, cepat, dan multi guna, untuk mendorong terciptanya ekosistem layanan telekomunikasi yang beragam bagi para penggunanya. Next Generation Network (NGN merupakan sebuah teknologi masa depan yang mendukung beberapa layanan terintegrasi seperti voice, data, dan multimedia. Hal utama dari konsep NGN adalah konvergensi dan layanan yang berbasis IP sehingga diperlukan sebuah teknologi yang dikenal dengan IP Multimedia Subsystem (IMS. Agar pengiriman data dalam layanan IMS menjadi lebih efektif dan efisien maka diperlukan sebuah teori antrian yang tepat untuk digunakan sebagai pengatur aliran paket data. Penelitian ini melakukan pengamatan terhadap beberapa layanan pada jaringan IMS dengan menggunakan tiga teori antrian yang berbeda yaitu First In First Out (FIFO, Priority Queuing (PQ, dan Weighted-Fair Queuing (WFQ. Pengamatan dilakukan terhadap layanan Video Conference dan VoIP. Dari hasil simulasi dapat diketahui bahwa teori antrian WFQ pada layanan video conference menghasilkan rata-rata delay sebesar 9.22 ms , delay variation sebesar 0.036 ms dan packet loss sebesar 0.88%. Sedangkan untuk layanan VoIP menghasilkan rata-rata delay sebesar 144 ms, delay variation sebesar 0.021 ms, dan packet loss sebesar 0.05% serta menghasilkan rata-rata throughput sebesar 7.052 Mbps, sehingga teori antrian yang tepat digunakan dalam jaringan IMS dalam penelitian ini adalah WFQ.

  19. Design of an online charging system to support IMS-based inter-domain composite services

    NARCIS (Netherlands)

    Le, V.M.; Huitema, G.B.; Rumph, F.J.; Nieuwenhuis, Lambertus Johannes Maria; van Beijnum, Bernhard J.F.; Pfeifer, T.; Bellavista, P.

    2009-01-01

    For service providers online charging of composite services is necessary in order to manage financial risks of service delivery in multi-domain environments. At service level, inter-domain composite services consist of one or more service components, e.g. access service, IMS communication service or

  20. Investigating aluminum alloy reinforced by graphene nanoflakes

    Energy Technology Data Exchange (ETDEWEB)

    Yan, S.J., E-mail: shaojiuyan@126.com [Beijing Institute of Aeronautical Materials, Beijing 100095 (China); Dai, S.L.; Zhang, X.Y.; Yang, C.; Hong, Q.H.; Chen, J.Z. [Beijing Institute of Aeronautical Materials, Beijing 100095 (China); Lin, Z.M. [Aviation Industry Corporation of China, Beijing 100022 (China)

    2014-08-26

    As one of the most important engineering materials, aluminum alloys have been widely applied in many fields. However, the requirement of enhancing their mechanical properties without sacrificing the ductility is always a challenge in the development of aluminum alloys. Thanks to the excellent physical and mechanical properties, graphene nanoflakes (GNFs) have been applied as promising reinforcing elements in various engineering materials, including polymers and ceramics. However, the investigation of GNFs as reinforcement phase in metals or alloys, especially in aluminum alloys, is still very limited. In this study, the aluminum alloy reinforced by GNFs was successfully prepared via powder metallurgy approach. The GNFs were mixed with aluminum alloy powders through ball milling and followed by hot isostatic pressing. The green body was then hot extruded to obtain the final GNFs reinforced aluminum alloy nanocomposite. The scanning electron microscopy and transmission electron microscope analysis show that GNFs were well dispersed in the aluminum alloy matrix and no chemical reactions were observed at the interfaces between the GNFs and aluminum alloy matrix. The mechanical properties' testing results show that with increasing filling content of GNFs, both tensile and yield strengths were remarkably increased without losing the ductility performance. These results not only provided a pathway to achieve the goal of preparing high strength aluminum alloys with excellent ductilitybut they also shed light on the development of other metal alloys reinforced by GNFs.

  1. Environmental fatigue in aluminum-lithium alloys

    Science.gov (United States)

    Piascik, Robert S.

    1992-01-01

    Aluminum-lithium alloys exhibit similar environmental fatigue crack growth characteristics compared to conventional 2000 series alloys and are more resistant to environmental fatigue compared to 7000 series alloys. The superior fatigue crack growth behavior of Al-Li alloys 2090, 2091, 8090, and 8091 is due to crack closure caused by tortuous crack path morphology and crack surface corrosion products. At high R and reduced closure, chemical environment effects are pronounced resulting in accelerated near threshold da/dN. The beneficial effects of crack closure are minimized for small cracks resulting in rapid growth rates. Limited data suggest that the 'chemically small crack' effect, observed in other alloy system, is not pronounced in Al-Li alloys. Modeling of environmental fatigue in Al-Li-Cu alloys related accelerated fatigue crack growth in moist air and salt water to hydrogen embrittlement.

  2. Applications of shape memory alloys in Japan

    International Nuclear Information System (INIS)

    Asai, M.; Suzuki, Y.

    2000-01-01

    In Japan, a first application of shape memory TiNi alloy was a moving flap in an air-conditioner which was developed as sensing function of shape memory alloy at Matsushista Electric Industrial Co. Then, shape memory utilized in a coffee maker, an electric rice-cooker, a thermal mixing valve and etc. were commercialized in Japan. And brassiere wires, a guide wire for medical treatment, an antenna for portable telephone and others were commercialized utilizing superelasticity. At the same time with these commercial products, there was not only progress in fabrication technology to effect accurate transformation temperature, but also the discovery of small hysteresis alloy such as R-phase or TiNiCu alloy and low transformation temperature alloy such as TiNiFe, TiNiV and TiNiCo alloys. Therefore the shape memory alloy market has expanded widely to electric appliances, automobile, residence, medical care and other field today. (orig.)

  3. Requirements of titanium alloys for aeronautical industry

    Science.gov (United States)

    Ghiban, Brânduşa; Bran, Dragoş-Teodor; Elefterie, Cornelia Florina

    2018-02-01

    The project presents the requirements imposed for aeronatical components made from Titanium based alloys. Asignificant portion of the aircraft pylons are manufactured from Titanium alloys. Strength, weight, and reliability are the primary factors to consider in aircraft structures. These factors determine the requirements to be met by any material used to construct or repair the aircraft. Many forces and structural stresses act on an aircraft when it is flying and when it is static and this thesis describes environmental factors, conditions of external aggression, mechanical characteristics and loadings that must be satisfied simultaneously by a Ti-based alloy, compared to other classes of aviation alloys (as egg. Inconel super alloys, Aluminum alloys). For this alloy class, the requirements are regarding strength to weight ratio, reliability, corrosion resistance, thermal expansion and so on. These characteristics additionally continue to provide new opportunities for advanced manufacturing methods.

  4. Aeronautical Industry Requirements for Titanium Alloys

    Science.gov (United States)

    Bran, D. T.; Elefterie, C. F.; Ghiban, B.

    2017-06-01

    The project presents the requirements imposed for aviation components made from Titanium based alloys. A significant portion of the aircraft pylons are manufactured from Titanium alloys. Strength, weight, and reliability are the primary factors to consider in aircraft structures. These factors determine the requirements to be met by any material used to construct or repair the aircraft. Many forces and structural stresses act on an aircraft when it is flying and when it is static and this thesis describes environmental factors, conditions of external aggression, mechanical characteristics and loadings that must be satisfied simultaneously by a Ti-based alloy, compared to other classes of aviation alloys (as egg. Inconel super alloys, Aluminum alloys).For this alloy class, the requirements are regarding strength to weight ratio, reliability, corrosion resistance, thermal expansion and so on. These characteristics additionally continue to provide new opportunities for advanced manufacturing methods.

  5. Passive Corrosion Behavior of Alloy 22

    International Nuclear Information System (INIS)

    R.B. Rebak; J.H. Payer

    2006-01-01

    Alloy 22 (NO6022) was designed to stand the most aggressive industrial applications, including both reducing and oxidizing acids. Even in the most aggressive environments, if the temperature is lower than 150 F (66 C) Alloy 22 would remain in the passive state having particularly low corrosion rates. In multi-ionic solutions that may simulate the behavior of concentrated ground water, even at near boiling temperatures, the corrosion rate of Alloy 22 is only a few nano-meters per year because the alloy is in the complete passive state. The corrosion rate of passive Alloy 22 decreases as the time increases. Immersion corrosion testing also show that the newer generation of Ni-Cr-Mo alloys may offer a better corrosion resistance than Alloy 22 only in some highly aggressive conditions such as in hot acids

  6. Irradiation effects in magnesium and aluminium alloys

    International Nuclear Information System (INIS)

    Sturcken, E.F.

    1979-01-01

    Effects of neutron irradiation on microstructure, mechanical properties and swelling of several magnesium and aluminium alloys were studied. The neutron fluences of 2-3 X 10 22 n/cm 2 , >0.2 MeV produced displacement doses of 20 to 45 displacements per atom (dpa). Ductility of the magnesium alloys was severely reduced by irradiation induced recrystallization and precipitation of various forms. Precipitation of transmuted silicon occurred in the aluminium alloys. However, the effect on ductility was much less than for the magnesium alloys. The magnesium and aluminium alloys had excellent resistance to swelling: The best magnesium alloy was Mg/3.0 wt% Al/0.19 wt% Ca; its density decreased by only 0.13%. The best aluminium alloy was 6063, with a density decrease of 0.22%. (Auth.)

  7. Underpotential and overpotential deposition of Al onto Cu(111 from the AlCl3–EtMeImCl room temperature molten salt

    Directory of Open Access Journals (Sweden)

    V. D. JOVIC

    2006-04-01

    Full Text Available The processes of underpotential (UPD and overpotential (OPD deposition ofAl onto Cu(111, from the room temperature molten salt AlCl3–EtMeImCl of different compositions, has been investigated by the cyclic volatmmetry (CV and potentiostatic pulse techniques. It was shown that the CVs of the UPD are characterized by two sharp peaks, while the potentiostatic cathodic and anodic j–t-transients of this process are characterized by two waves, indicating that the UPD of Al results in the formation of two structures. The first, less dense one,most probably the (sqrt3 x sqrt3 R30 º ordered structure of Al, is formed at a more positive potential of about 200 mV vs. Al, while the second one, a complete momolayer of Al, is formed at about 20 mV vs. Al, just before the reversible potential of Al in these melts (–20mV vs. Al. The OPD of Al was detected at potentials more negative than –30 mV vs. Al, occurring through the progressive 3D nucleation and growth mechanism. Slow surface alloying of Al with Cu was found to occur at a potential close to the reversible potential of Al.

  8. Nickel, cobalt, and their alloys

    CERN Document Server

    2000-01-01

    This book is a comprehensive guide to the compositions, properties, processing, performance, and applications of nickel, cobalt, and their alloys. It includes all of the essential information contained in the ASM Handbook series, as well as new or updated coverage in many areas in the nickel, cobalt, and related industries.

  9. Heat treatment of nickel alloys

    International Nuclear Information System (INIS)

    Smith, D.F. Jr.; Clatworthy, E.F.

    1975-01-01

    A heat treating process is described that can be used to produce desired combinations of strength, ductility, and fabricability characteristics in heat resistant age-hardenable alloys having precipitation-hardening amounts of niobium, titanium, and/or tantalum in a nickel-containing matrix. (U.S.)

  10. Electroplated zinc-cobalt alloy

    International Nuclear Information System (INIS)

    Carpenter, D.E.O.S.; Farr, J.P.G.

    2005-01-01

    Recent work on the deposition and use of ectrodeposited zinc-cobalt alloys is surveyed. Alloys containing lower of Nuclear quantities of cobalt are potentially more useful. The structures of the deposits is related to their chemical and mechanical properties. The inclusion of oxide and its role in the deposition mechanism may be significant. Chemical and engineering properties relate to the metallurgical structure of the alloys, which derives from the mechanism of deposition. The inclusion of oxides and hydroxides in the electroplate may provide evidence for this mechanism. Electrochemical impedance measurements have been made at significant deposition potentials, in alkaline electrolytes. These reveal a complex electrode behaviour which depends not only on the electrode potential but on the Co content of the electrolyte. For the relevant range of cathodic potential zinc-cobalt alloy electrodeposition occurs through a stratified interface. The formation of an absorbed layer ZnOH/sup +/ is the initial step, this inhibits the deposition of cobalt at low cathodic potentials, so explaining its 'anomalous deposition'. A porous layer of zinc forms on the adsorbed ZnOH/sup +/ at underpotential. As the potential becomes more cathodic, cobalt co- deposits from its electrolytic complex forming a metallic solid solution of Co in Zn. In electrolytes containing a high concentration of cobalt a mixed entity (ZnCo)/sub +/ is assumed to adsorb at the cathode from which a CoZn intermetallic deposits. (author)

  11. Research on modulated structure alloys

    International Nuclear Information System (INIS)

    Tsujimoto, Tokuzo; Saito, Kazuo; Hashimoto, Kenki

    1982-01-01

    Research was carried out for the purposes of clarifying the cause of modulated structure formation, developing the structure control method utilizing modulated structure and clarifying the suitability of modulated structure alloys as radiation damage-resisting materials. The research on structure control method encountered a difficulty in the analysis of experimental results, bu the following results were obtained in the other items. The method of solving a diffusion equation including a nonlinear term was found in course of the clarification of the cause of modulated structure formation. As a means of detecting faint unevenness in solid solution, of which the deviation of composition is a few %, the structure analysis method utilizing magnetic property was developed. This method was applied to Ni-9.6 at.% Ti alloy, and the process of expanding amplitude in composition variation in spinodal decomposition and the formation of solute atomshort region at the time of nucleation-growth were confirmed. Utilizing the high energy electron beam generated in a superhigh voltage electron microscope, electron beam irradiation experiment was carried out on precipitation hardening alloys with modulated structure. As the result, it was found that in Ni-Ti alloy, the amount of void swelling resistance showed the change with the increase of modulated structure period. (Kako, I.)

  12. Palladium alloys for hydrogen diffusion

    International Nuclear Information System (INIS)

    1977-01-01

    A palladium-base alloy with tin and/or a silicon addition and its use in the production of hydrogen from water via a cycle of chemical reactions, of which the decomposition of HI into H 2 and I 2 is the most important, is described

  13. Introduction to hydrogen in alloys

    International Nuclear Information System (INIS)

    Westlake, D.G.

    1980-01-01

    Substitutional alloys, both those that form hydrides and those that do not, are discussed, but with more emphasis on the former than the latter. This overview includes the following closely related subjects: (1) the significant effects of substitutional solutes on the pressure-composition-temperature (PCT) equilibria of metal-hydrogen systems, (2) the changes in thermodynamic properties resulting from differences in atom size and from modifications of electronic structure, (3) attractive and repulsive interactions between H and solute atoms and the effects of such interactions on the pressure dependent solubility for H, (4) H trapping in alloys of Group V metals and its effect on the terminal solubility for H (TSH), (5) some other mechanisms invoked to explain the enhancement (due to alloying) of the (TSH) in Group V metals, and (6) H-impurity complexes in alloys of the metals Ni, Co, and Fe. Some results showing that an enhanced TSH may ameliorate the resistance of a metal to hydrogen embrittlement are presented

  14. Iron-nickel-chromium alloys

    International Nuclear Information System (INIS)

    Karenko, M.K.

    1981-01-01

    A specification is given for iron-nickel-chromium age-hardenable alloys suitable for use in fast breeder reactor ducts and cladding, which utilize the gamma-double prime strengthening phase and are characterized in having a delta or eta phase distributed at or near grain boundaries. A range of compositions is given. (author)

  15. Electroless alloy/composite coatings

    Indian Academy of Sciences (India)

    The market for these coatings is expanding fast as the potential applications are on the rise. In the present article, an attempt has been made to review different electroless alloy/composite coatings with respect to bath types and their composition, properties and applications. Different characterisation studies have been ...

  16. The welding of alloy 800

    International Nuclear Information System (INIS)

    Ward, M.; Norman, P.L.

    1975-01-01

    This paper reviews the technical literature published on the welding of alloy 800. Much of this work has been carried out using the Varestraint and Gleeble tests to investigate the susceptibility of the alloy and of high nickel consumables to hot-cracking. Inspite of much reported work, it is pointed out that many years of experience in the use of alloy 800 shows it to be readily weldable without any major problems occurring due to hot-cracking. The elements investigated include titanium, aluminium, sulphur, phosphorus and carbon, and the effects of these elements are discuused in terms of their effects on the hot-ductility curves obtained by Gleeble testing. Conclusions reached by various researchers state that the individual effects of the above five elements may be masked by other unknown factors. It is concluded that with correct welding procedures alloy 800 can be welded without cracking problems even with high heat input welding processes using either high-nickel filler wires or a matching electrode. Matching composition filler wires have been used with success but none are at present available commercially. (author)

  17. Hydrostatic extrusion of magnesium alloys

    NARCIS (Netherlands)

    Sillekens, W.H.; Bohlen, J.

    2012-01-01

    This chapter deals with the capabilities and limitations of the hydrostatic extrusion process for the manufacturing of magnesium alloy sections. Firstly, the process basics for the hydrostatic extrusion of materials in general and of magnesium in particular are introduced. Next, some recent research

  18. Automation of PCXMC and ImPACT for NASA Astronaut Medical Imaging Dose and Risk Tracking

    Science.gov (United States)

    Bahadori, Amir; Picco, Charles; Flores-McLaughlin, John; Shavers, Mark; Semones, Edward

    2011-01-01

    To automate astronaut organ and effective dose calculations from occupational X-ray and computed tomography (CT) examinations incorporating PCXMC and ImPACT tools and to estimate the associated lifetime cancer risk per the National Council on Radiation Protection & Measurements (NCRP) using MATLAB(R). Methods: NASA follows guidance from the NCRP on its operational radiation safety program for astronauts. NCRP Report 142 recommends that astronauts be informed of the cancer risks from reported exposures to ionizing radiation from medical imaging. MATLAB(R) code was written to retrieve exam parameters for medical imaging procedures from a NASA database, calculate associated dose and risk, and return results to the database, using the Microsoft .NET Framework. This code interfaces with the PCXMC executable and emulates the ImPACT Excel spreadsheet to calculate organ doses from X-rays and CTs, respectively, eliminating the need to utilize the PCXMC graphical user interface (except for a few special cases) and the ImPACT spreadsheet. Results: Using MATLAB(R) code to interface with PCXMC and replicate ImPACT dose calculation allowed for rapid evaluation of multiple medical imaging exams. The user inputs the exam parameter data into the database and runs the code. Based on the imaging modality and input parameters, the organ doses are calculated. Output files are created for record, and organ doses, effective dose, and cancer risks associated with each exam are written to the database. Annual and post-flight exposure reports, which are used by the flight surgeon to brief the astronaut, are generated from the database. Conclusions: Automating PCXMC and ImPACT for evaluation of NASA astronaut medical imaging radiation procedures allowed for a traceable and rapid method for tracking projected cancer risks associated with over 12,000 exposures. This code will be used to evaluate future medical radiation exposures, and can easily be modified to accommodate changes to the risk

  19. Die emotionale Dimension während der Sprechproduktion im Fremdsprachenlernprozess

    Directory of Open Access Journals (Sweden)

    Bahar İŞİGÜZEL

    2017-12-01

    Full Text Available Die Gefühle bzw. Emotionen der Lernenden beim Fremdsprachenlehr- und Lernprozess spielen eine wichtige Rolle. Mit der Verknüpfung der Emotion und Kognition beim Lernprozess, haben die positiven Gefühle eine große Bedeutung für den Lernerfolg. Als eine produktive Fertigkeit hat das Sprechen eine wesentlich intensive Beziehung mit den Emotionen, weil es in der realen Zeit fließend laufen muss. Der Lernende soll bei der Sprechproduktion spontan die richtigen Wörter auf die richtige Art und Weise anwenden und sie auch noch verständlich aussprechen. Leider erreicht die Sprechfertigkeit meistens eine niedrigere Niveaustufe als die anderen drei (Schreiben, Lesen und Hören Fertigkeiten im Fremdsprachenunterrichtprozess. Diese qualitative Untersuchung konzentriert sich auf die Daten (Tonaufnahme, die anhand eines Interviews während einer Sprechproduktionsübung im universitären Fremdsprachenunterricht gesammelt wurden. Um die emotionale Dimension der Lernenden während der Sprechproduktion zu identifizieren, wurden im Einzelinterview die Frage „Wie fühlst du dich während du eine Fremdsprache (Englisch sprichst?“ gestellt. Die Teilnehmer dieser Untersuchung waren 29 Studenten, die im WS 2016 - 2017 an Universität Nevşehir Hacı Bektaş Veli (Türkei immatrikuliert waren. Die Auswertung des Interviews folgte mit einer Transkription und einer Interpretation der Tonaufnahmen. Die Meinungen zu der emotionalen Dimension während der Sprechproduktion der Studenten wurden kategorisiert. Die Resultate dieser qualitativen Untersuchung zeigen, dass die emotionale Dimension der Lernenden im universitären Kontext sich in drei Kategorien (positiv, negativ und frühere Ausbildung verteilen.

  20. Detection capability of the IMS seismic network based on ambient seismic noise measurements

    Science.gov (United States)

    Gaebler, Peter J.; Ceranna, Lars

    2016-04-01

    All nuclear explosions - on the Earth's surface, underground, underwater or in the atmosphere - are banned by the Comprehensive Nuclear-Test-Ban Treaty (CTBT). As part of this treaty, a verification regime was put into place to detect, locate and characterize nuclear explosion testings at any time, by anyone and everywhere on the Earth. The International Monitoring System (IMS) plays a key role in the verification regime of the CTBT. Out of the different monitoring techniques used in the IMS, the seismic waveform approach is the most effective technology for monitoring nuclear underground testing and to identify and characterize potential nuclear events. This study introduces a method of seismic threshold monitoring to assess an upper magnitude limit of a potential seismic event in a certain given geographical region. The method is based on ambient seismic background noise measurements at the individual IMS seismic stations as well as on global distance correction terms for body wave magnitudes, which are calculated using the seismic reflectivity method. From our investigations we conclude that a global detection threshold of around mb 4.0 can be achieved using only stations from the primary seismic network, a clear latitudinal dependence for the detection threshold can be observed between northern and southern hemisphere. Including the seismic stations being part of the auxiliary seismic IMS network results in a slight improvement of global detection capability. However, including wave arrivals from distances greater than 120 degrees, mainly PKP-wave arrivals, leads to a significant improvement in average global detection capability. In special this leads to an improvement of the detection threshold on the southern hemisphere. We further investigate the dependence of the detection capability on spatial (latitude and longitude) and temporal (time) parameters, as well as on parameters such as source type and percentage of operational IMS stations.