@phdthesis{Abel2005, author = {Abel, Markus}, title = {Turbulent flows : transport, analysis and modeling}, address = {Potsdam}, pages = {Getr. Z{\"a}hlung}, year = {2005}, language = {en} } @article{AbelAhnertKurthsetal.2005, author = {Abel, Markus and Ahnert, Karsten and Kurths, R. and Mandelj, S.}, title = {Additive nonparametric reconstruction of dynamical systems from time series}, issn = {1063-651X}, year = {2005}, abstract = {We present a nonparametric way to retrieve an additive system of differential equations in embedding space from a single time series. These equations can be treated with dynamical systems theory and allow for long-term predictions. We apply our method to a modified chaotic Chua oscillator in order to demonstrate its potential}, language = {en} } @book{AizenbergTarkhanov2005, author = {Aizenberg, Lev A. and Tarkhanov, Nikolai Nikolaevich}, title = {Stable expansions in homogeneous polynomials}, series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik, Arbeitsgruppe Partiell}, journal = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik, Arbeitsgruppe Partiell}, publisher = {Univ.}, address = {Potsdam}, issn = {1437-739X}, pages = {23 S.}, year = {2005}, language = {en} } @article{AlarconAldereteAguilaetal.2005, author = {Alarcon, Julio and Alderete, Joel B. and Aguila, Sergio and Peter, Martin G.}, title = {Regio and stereoselective hydroxylation of alpha-agarofuran by biotransformation of rhizopus nigricans}, year = {2005}, abstract = {A new synthesis of 9 alpha-hydroxy-alpha-agarofuran (6 alpha) is described, using a microbiological hydroxylation alpha-agarofuran (5) as the key reaction. The stereochemistry of the biohydroxylation was determined on the basis of a NOESY-experiment and GIAO calculations at the B3LYP/cc-pVDZ level. A strong gamma-effect was observed at C15 of the agarofuran ring which was correctly predicted by the GIAO-B3LYP calculations}, language = {en} } @phdthesis{Ali2005, author = {Ali, Abu Md. Imroz}, title = {Morphology control in nanoscopic composite polymer particles}, address = {Potsdam}, pages = {97, XXXV S. : Ill., graph. Darst.}, year = {2005}, language = {en} } @article{Allefeld2005, author = {Allefeld, Carsten}, title = {Phase vs. amplitude correlations in event-related potentials}, issn = {0898-929X}, year = {2005}, language = {en} } @article{AllefeldFrischSchlesewsky2005, author = {Allefeld, Carsten and Frisch, Stefan and Schlesewsky, Matthias}, title = {Detection of early cognitive processing by event-related phase synchronization analysis}, issn = {0959-4965}, year = {2005}, abstract = {In order to investigate the temporal characteristics of cognitive processing, we apply multivariate phase synchronization analysis to event-related potentials. The experimental design combines a semantic incongruity in a sentence context with a physical mismatch (color change). In the ERP average, these result in an N400 component and a P300-like positivity, respectively. Synchronization analysis shows an effect of global desynchronization in the theta band around 288 ms after stimulus presentation for the semantic incongruity, while the physical mismatch elicits an increase of global synchronization in the alpha band around 204 ms. Both of these effects clearly precede those in the ERP aver-age. Moreover, the delay between synchronization effect and ERP component correlates with the complexity Of the cognitive processes. (C) 2005 Lippincott Williams Wilkins}, language = {en} } @phdthesis{Andersen2005, author = {Andersen, Audr{\´e}e}, title = {Surfactant dynamics at interfaces : a series of second harmonic generation experiments}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-6553}, school = {Universit{\"a}t Potsdam}, year = {2005}, abstract = {Adsorption layers of soluble surfactants enable and govern a variety of phenomena in surface and colloidal sciences, such as foams. The ability of a surfactant solution to form wet foam lamellae is governed by the surface dilatational rheology. Only systems having a non-vanishing imaginary part in their surface dilatational modulus, E, are able to form wet foams. The aim of this thesis is to illuminate the dissipative processes that give rise to the imaginary part of the modulus. There are two controversial models discussed in the literature. The reorientation model assumes that the surfactants adsorb in two distinct states, differing in their orientation. This model is able to describe the frequency dependence of the modulus E. However, it assumes reorientation dynamics in the millisecond time regime. In order to assess this model, we designed a SHG pump-probe experiment that addresses the orientation dynamics. Results obtained reveal that the orientation dynamics occur in the picosecond time regime, being in strong contradiction with the two states model. The second model regards the interface as an interphase. The adsorption layer consists of a topmost monolayer and an adjacent sublayer. The dissipative process is due to the molecular exchange between both layers. The assessment of this model required the design of an experiment that discriminates between the surface compositional term and the sublayer contribution. Such an experiment has been successfully designed and results on elastic and viscoelastic surfactant provided evidence for the correctness of the model. Because of its inherent surface specificity, surface SHG is a powerful analytical tool that can be used to gain information on molecular dynamics and reorganization of soluble surfactants. They are central elements of both experiments. However, they impose several structural elements of the model system. During the course of this thesis, a proper model system has been identified and characterized. The combination of several linear and nonlinear optical techniques, allowed for a detailed picture of the interfacial architecture of these surfactants.}, subject = {Tensid}, language = {en} } @phdthesis{Andersen2005, author = {Andersen, Christoph}, title = {Wettbewerbsf{\"a}higkeit kommunaler IT-Dienstleister : lokale Gestaltungsstrategien und Effekte}, series = {E-Government und die Erneuerung des {\"o}ffentlichen Sektors}, volume = {6}, journal = {E-Government und die Erneuerung des {\"o}ffentlichen Sektors}, publisher = {LIT}, address = {M{\"u}nster}, isbn = {3-8258-8542-9}, pages = {248 S. : graph. Darst.}, year = {2005}, language = {de} } @phdthesis{Andersen2005, author = {Andersen, Katja}, title = {Design and use patterns of adaptability in enterprise systems}, series = {Reihe Wirtschaftsinformatik : technische und organisatorische Gestaltungsoptionen}, volume = {5}, journal = {Reihe Wirtschaftsinformatik : technische und organisatorische Gestaltungsoptionen}, editor = {Gronau, Norbert}, publisher = {Gito-Verl.}, address = {Berlin}, isbn = {3-936771-78-2}, pages = {147 S. : graph. Darst.}, year = {2005}, language = {en} } @phdthesis{Andersen2005, author = {Andersen, Morten I.}, title = {Low-mass pre-main-sequence stars in the massive star clusters NGC 3603 and 30 Dor}, pages = {141 S. : Ill., graph. Darst.}, year = {2005}, language = {en} } @article{AndresenGronau2005, author = {Andresen, Katja and Gronau, Norbert}, title = {Seeking Optimal IT-Strategies by the Determination of Adaptability in Domain-Specific Software Applications}, year = {2005}, abstract = {Adaptability of information systems has become a substantial competition factor. Today's insufficient methodical support for the realization of adaptability frequently leads to unused potentials of deployed information technology in enterprises. In this contribution a procedure is presented, which addresses the demand to determine the necessary adaptability of an enterprise related to its surrounding environmental environment.}, language = {en} } @article{AndresenGronau2005, author = {Andresen, Katja and Gronau, Norbert}, title = {An Approach to Increase Adaptability in ERP Systems}, year = {2005}, abstract = {The concept of adaptability has been widely recognised as research field in recent years. Business information systems play a key part in terms of business performance. Adaptability of information systems therefore is a primary goal of vendors and end-users. However, so far concepts that help to determine the adaptability of Information Systems are missing. Based on research results of the project CHANGE1 this contribution presents an integrated process model addressing the problem and a possible solution.}, language = {en} } @article{AndresenGronau2005, author = {Andresen, Katja and Gronau, Norbert}, title = {Die Gestaltung von Unternehmensarchitekturen : wieviel Flexibilit{\"a}t ist notwendig?}, year = {2005}, abstract = {F{\"u}r Unternehmen stellt sich immer wieder die Frage nach der Stabilit{\"a}t der Gesch{\"a}ftsprozesse. Wie flexibel bzw. wandlungsf{\"a}hig m{\"u}ssen Unternehmensarchitekturen ausgelegt werden, damit Ver{\"a}nderungen in der Aufbau- oder Ablauforganisation ITseitig auch in Zukunft gefolgt werden kann? Dazu wird im folgenden Beitrag das Paradigma Wandlungsf{\"a}higkeit als Gestaltungsziel von Unternehmensarchitekturen charakterisiert und der Zusammenhang zwischen Ver{\"a}nderungen des Umfeldes eines Unternehmens und erforderlicher Anpassungsf{\"a}higkeit der Informationssysteme erl{\"a}utert.}, language = {de} } @article{AndresenGronauSchmid2005, author = {Andresen, Katja and Gronau, Norbert and Schmid, Simone}, title = {Ableitung von IT-Strategien durch Bestimmung der notwendigen Wandlungsf{\"a}higkeit von Informationssystemarchitekturen}, isbn = {3-7908-1574-8}, year = {2005}, abstract = {Wandlungsf{\"a}higkeit von Informationssystemen ist zu einem wesentlichen Wettbewerbsfaktor geworden. Die derzeit unzureichende methodische Unterst{\"u}tzung zur Umsetzung von Wandlungsf{\"a}higkeit f{\"u}hrt in Unternehmen h{\"a}ufig zu ungenutzten Potentialen einer leistungsf{\"a}higen Struktur durch die eingesetzte Informationstechnologie. Ziel des Forschungsprojektes CHANGE ist es, Methoden und Vorgehensmodelle zu entwickeln, die eine dauerhafte Wandlungsf{\"a}higkeit von Informationssystemen unterst{\"u}tzen. Dazu wird im Rahmen dieses Beitrages ein Verfahren vorgestellt, welches der Forderung zur Ermittlung der notwendigen Wandlungsf{\"a}higkeit unter Einbeziehung des Unternehmensumfeldes nachkommt. Als wesentliches Ergebnis wird ein Kennzahlensystem entwickelt, das zum einen die Umweltsituation als Indikator f{\"u}r den Wandlungsdruck eines Unternehmens beschreibt. Im n{\"a}chsten Schritt werden Kriterien zur Ermittlung des Wandlungspotentials der eingesetzten IT herangezogen. Abschließend werden beide Dimensionen zusammengef{\"u}hrt und in ihrer Bedeutung f{\"u}r die IT Strategie eines Unternehmens interpretiert.}, language = {de} } @article{AndrianovKlamrothSaalfranketal.2005, author = {Andrianov, Igor V. and Klamroth, Tillmann and Saalfrank, Peter and Bovensiepen, U. and Gahl, Cornelius and Wolf, M. M.}, title = {Quantum theoretical study of electron solvation dynamics in ice layers on a Cu(111) surface}, issn = {0021-9606}, year = {2005}, abstract = {Recent experiments using time- and angle-resolved two-photon photoemission (2PPE) spectroscopy at metal/polar adsorbate interfaces succeeded in time-dependent analysis of the process of electron solvation. A fully quantum mechanical, two-dimensional simulation of this process, which explicitly includes laser excitation, is presented here, confirming the origin of characteristic features, such as the experimental observation of an apparently negative dispersion. The inference of the spatial extent of the localized electron states from the angular dependence of the 2PPE spectra has been found to be non-trivial and system-dependent. (C) 2005 American Institute of Physics}, language = {en} } @article{AngerGebserLinkeetal.2005, author = {Anger, Christian and Gebser, Martin and Linke, Thomas and Neumann, Andre and Schaub, Torsten H.}, title = {The nomore++ approach to answer set solving}, year = {2005}, language = {en} } @article{AngerGebserLinkeetal.2005, author = {Anger, Christian and Gebser, Martin and Linke, Thomas and Neumann, Andre and Schaub, Torsten H.}, title = {The nomore++ approach to answer set solving}, year = {2005}, language = {en} } @article{AngerKonczakLinkeetal.2005, author = {Anger, Christian and Konczak, Kathrin and Linke, Thomas and Schaub, Torsten H.}, title = {A Glimpse of Answer Set Programming}, issn = {0170-4516}, year = {2005}, language = {en} } @article{ApitzBellDamgaardetal.2005, author = {Apitz, Sabine E. and Bell, Elanor M. and Damgaard, Lars and Gilbert, Franck and Glud, R and Hall, P. O. J. and Kershaw, P. J. and Nickel, L and Parker, R and Rabouille, Christophe and Shimmield, Grahamm and Solan, Martin and Soltwedel, Thomas and Spagnoli, Federico and Witte, Ursula}, title = {Coastal Ocean Benthic Observatories (COBO) : integrated tools for the in situ observation and study of benthic ecosystem biogeochemical processes}, year = {2005}, language = {en} } @phdthesis{Arrivault2005, author = {Arrivault, St{\´e}phanie}, title = {Functional characterization of Arabidopsis thaliana MTP3, a putative metal transport protein of the cation diffusion facilitator (CDF) family}, pages = {VII, 121 Bl. : Ill., graph. Darst.}, year = {2005}, language = {en} } @phdthesis{Asfaw2005, author = {Asfaw, Mesfin}, title = {Adhesion of multi-component membbranes and strings}, address = {Potsdam}, pages = {102 S. : graph. Darst.}, year = {2005}, language = {en} } @phdthesis{Aulbert2005, author = {Aulbert, Carsten}, title = {Finding millisecond binary pulsars in 47 tucanae by applying the hough transformation to radio data}, address = {Potsdam}, pages = {173 S. : graph. Darst.}, year = {2005}, language = {en} } @book{AulkeBrandenburgDrechslerKoehleretal.2005, author = {Aulke, Gudrun and Brandenburg, Silke and Drechsler-K{\"o}hler, Beate and Giest, Hartmut and Haas, Wolfgang and Hinze, Gabriele and H{\"o}ffer, Ute and Koriller, Astrid and L{\"u}ftner, Werner and M{\"u}ller, Uta and Mues, Rainer and Papstein, Gisela and Schiepe, Axel}, title = {Bausteine Sachunterricht : Arbeitsheft 1 ; Berlin / Brandenburg / Mecklenburg-Vorpommern ; Grundschule}, editor = {Giest, Hartmut}, publisher = {Diesterweg}, address = {Braunschweig}, isbn = {3-425-11121-3}, pages = {77 S.}, year = {2005}, language = {de} } @book{AulkeBrandenburgDrechslerKoehleretal.2005, author = {Aulke, Gudrun and Brandenburg, Silke and Drechsler-K{\"o}hler, Beate and Giest, Hartmut and Haas, Wolfgang and Hinze, Gabriele and H{\"o}ffer, Ute and Koriller, Astrid and L{\"u}ftner, Werner and M{\"u}ller, Uta and Mues, Rainer and Papstein, Gisela and Schiepe, Axel}, title = {Bausteine Sachunterricht : Sch{\"u}lerband 3 ; Berlin / Brandenburg / Mecklenburg-Vorpommern ; Grundschule}, editor = {Giest, Hartmut}, publisher = {Diesterweg}, address = {Braunschweig}, isbn = {3-425-11133-7}, pages = {112 S.}, year = {2005}, language = {de} } @book{AulkeBrandenburgDrechslerKoehleretal.2005, author = {Aulke, Gudrun and Brandenburg, Silke and Drechsler-K{\"o}hler, Beate and Giest, Hartmut and Haas, Wolfgang and Hinze, Gabriele and H{\"o}ffer, Ute and Koriller, Astrid and L{\"u}ftner, Werner and M{\"u}ller, Uta and Mues, Rainer and Papstein, Gisela and Schiepe, Axel}, title = {Bausteine Sachunterricht : Sch{\"u}lerband 4 ; Berlin / Brandenburg / Mecklenburg-Vorpommern ; Grundschule}, editor = {Giest, Hartmut}, publisher = {Diesterweg}, address = {Braunschweig}, isbn = {3-425-11056-X}, pages = {128 S.}, year = {2005}, language = {de} } @book{AulkeBrandenburgDrechslerKoehleretal.2005, author = {Aulke, Gudrun and Brandenburg, Silke and Drechsler-K{\"o}hler, Beate and Giest, Hartmut and Haas, Wolfgang and Hinze, Gabriele and H{\"o}ffer, Ute and Koriller, Astrid and L{\"u}ftner, Werner and M{\"u}ller, Uta and Mues, Rainer and Papstein, Gisela and Schiepe, Axel}, title = {Bausteine Sachunterricht : Arbeitsheft 3 ; Berlin / Brandenburg / Mecklenburg-Vorpommern ; Grundschule}, editor = {Giest, Hartmut}, publisher = {Diesterweg}, address = {Braunschweig}, isbn = {978-3-425-11123-0}, pages = {79 S.}, year = {2005}, language = {de} } @book{AulkeBrandenburgDrechslerKoehleretal.2005, author = {Aulke, Gudrun and Brandenburg, Silke and Drechsler-K{\"o}hler, Beate and Giest, Hartmut and Haas, Wolfgang and Hinze, Gabriele and H{\"o}ffer, Ute and Koriller, Astrid and L{\"u}ftner, Werner and M{\"u}ller, Uta and Mues, Rainer and Papstein, Gisela and Schiepe, Axel}, title = {Bausteine Sachunterricht : Arbeitsheft 4 ; Berlin / Brandenburg / Mecklenburg-Vorpommern ; Grundschule}, editor = {Giest, Hartmut}, publisher = {Diesterweg}, address = {Braunschweig}, isbn = {978-3-425-11066-0}, pages = {95 S.}, year = {2005}, language = {de} } @book{AulkeBrandenburgDrechslerKoehleretal.2005, author = {Aulke, Gudrun and Brandenburg, Silke and Drechsler-K{\"o}hler, Beate and Giest, Hartmut and Haas, Wolfgang and Hinze, Gabriele and H{\"o}ffer, Ute and Koriller, Astrid and L{\"u}ftner, Werner and M{\"u}ller, Uta and Mues, Rainer and Papstein, Gisela and Schiepe, Axel}, title = {Bausteine Sachunterricht : Arbeitsheft 2 ; Berlin / Brandenburg / Mecklenburg-Vorpommern ; Grundschule}, editor = {Giest, Hartmut}, publisher = {Diesterweg}, address = {Braunschweig}, isbn = {978-3-425-11122-3}, pages = {93 S.}, year = {2005}, language = {de} } @article{AurichEsserMayetal.2005, author = {Aurich, Eberhard and Esser, G{\"u}nter and May, P. and Meiers, K.}, title = {Gesellschaftliche Bedeutung der Schriftsprachkompetenz und M{\"o}glichkeiten ihrer F{\"o}rderung}, year = {2005}, language = {de} } @article{BaakeBaakeBovieretal.2005, author = {Baake, Ellen and Baake, Michael and Bovier, Anton and Klein, Markus}, title = {An asymptotic maximum principle for essentially linear evolution models}, issn = {0303-6812}, year = {2005}, abstract = {Recent work on mutation-selection models has revealed that, under specific assumptions on the fitness function and the mutation rates, asymptotic estimates for the leading eigenvalue of the mutation-reproduction matrix may be obtained through a low-dimensional maximum principle in the limit N --> infinity (where N, or N-d with d greater than or equal to 1, is proportional to the number of types). In order to extend this variational principle to a larger class of models, we consider here a family of reversible matrices of asymptotic dimension N-d and identify conditions under which the high-dimensional Rayleigh-Ritz variational problem may be reduced to a low-dimensional one that yields the leading eigenvalue up to an error term of order 1/N. For a large class of mutation-selection models, this implies estimates for the mean fitness, as well as a concentration result for the ancestral distribution of types}, language = {en} } @article{BagnichBasslerNeher2005, author = {Bagnich, Sergey A. and Bassler, H. and Neher, Dieter}, title = {Exciton dynamics in ladder-type methyl-poly(para-phenylene) doped with phosphorescent dyes}, issn = {0022-2313}, year = {2005}, abstract = {The luminescence of a ladder-type methyl-poly(para-phenylene) (MeLPPP) doped with platinum-porphyrin dye PtOEP covering the concentration 10(-3)-5\% by weight has been measured employing cw and transient techniques. Upon excitation into the range of absorption of the host, strong phosphorescence of the dopant is observed. Possible ways of populating the dopant triplet state are considered. (c) 2004 Elsevier B.V. All rights reserved}, language = {en} } @article{BahrsBogenSchmid2005, author = {Bahrs, Julian and Bogen, Jane and Schmid, Simone}, title = {Pattern based Analysis and Redesign of Knowledge Intensive Business Processes}, year = {2005}, abstract = {Knowledge management aims at increasing efficiency of knowledge related work. The Knowledge Modelling and Description language offers a modelling and analysis approach to knowledge intensive business processes, which results in improved processes.}, language = {en} } @article{BahrsGronauMuelleretal.2005, author = {Bahrs, Julian and Gronau, Norbert and M{\"u}ller, Claudia and Schmid, Simone}, title = {Modellierung von Wissenskonversionen entlang wissensintensiver Gesch{\"a}ftsprozesse}, year = {2005}, abstract = {Der vorliegende Beitrag gibt eine Einf{\"u}hrung in die Analyse und Optimierung wissensintensiver Gesch{\"a}ftsprozesse. Dazu wird die Modellierungsmethodik KMDL® vorgestellt und ein Szenario ihrer Anwendung auf wissensintensive Prozesse im Finanzdienstleistungssektor entworfen. Dies wird exemplarisch am Dienstleistungsentwicklungsprozess sowie am Kundenberatungsprozess demonstriert. Dabei werden f{\"u}r beide Prozesse durch den Einsatz der KMDL® erkennbare Potenzialfelder aufgezeigt und Handlungsempfehlungen entworfen.}, language = {de} } @article{BahrsMueller2005, author = {Bahrs, Julian and M{\"u}ller, C.}, title = {Wissensnachfrage-orientierte Gestaltung von Softwareentwicklungsprozessen}, year = {2005}, abstract = {Die zunehmend dynamische Umwelt erfordert steigende Adaptivit{\"a}t von Softwareentwicklungsprozessen. Dem kann durch eine Prozessgestaltung nach Methoden des gesch{\"a}ftsprozessorientierten Wissensmanagements und dem damit vollzogenen Paradigmenwechsel zur nachfrageorientierten Wissensverteilung begegnet werden. In diesem Beitrag wird die Analyse einer ausgew{\"a}hlten Instanz eines mit der KMDL-SE beschriebenen Softwareentwicklungsprozesses vorgestellt}, language = {de} } @article{BahrsMueller2005, author = {Bahrs, Julian and M{\"u}ller, Claudia}, title = {Modelling and analysis of knowledge intensive business processes}, year = {2005}, abstract = {This contribution gives an overview on the scientific discipline of business process oriented knowledge management. It presents results and recent developments as well as an overview of this year's workshop on Modelling and Analysis of Knowledge Intensive Business Processes (KiBP 2005)}, language = {en} } @book{BahrsSchmid2005, author = {Bahrs, Julian and Schmid, Simone}, title = {Anwendungen und Systeme f{\"u}r das Wissensmanagement}, series = {Reihe Wirtschaftsinformatik : technische und organisatorische Gestaltungsoptionen}, volume = {3}, journal = {Reihe Wirtschaftsinformatik : technische und organisatorische Gestaltungsoptionen}, editor = {Gronau, Norbert}, publisher = {Gito-Verl.}, address = {Berlin}, isbn = {3-936771-53-7}, pages = {312 S.}, year = {2005}, language = {de} } @article{BakhshayeshIhle2005, author = {Bakhshayesh, Ari b. and Ihle, Wolfgang}, title = {Die Wirksamkeit von Kurzzeit-EMDR bei traumatisierten Kriegsveteranen im Iran}, isbn = {3-89967-220-8}, year = {2005}, language = {de} } @article{Balderjahn2005, author = {Balderjahn, Ingo}, title = {PLS versus LISREL : ein Methodenvergleich}, isbn = {3-7910-2360-8}, year = {2005}, language = {de} } @article{Balderjahn2005, author = {Balderjahn, Ingo}, title = {Virtuelle Kundenintegration im Innovationsprozess}, isbn = {3-8350-0142-6}, year = {2005}, language = {de} } @article{BallatoCrucianiDalconietal.2005, author = {Ballato, Paolo and Cruciani, G. and Dalconi, M. C. and Fabbri, B. and Macchiarola, M.}, title = {Mineralogical study of historical bricks from the Great Palace of the Byzantine Emperors in Istanbul based on powder X-ray diffraction data}, issn = {0935-1221}, year = {2005}, abstract = {This study concerns the Quantitative Phase Analysis (QPA) of historical bricks coming from the complex of the Great Palace of the Byzantine Emperors in Istanbul. The studied samples are characterised by different chemical compositions (low and high calcium content), variable firing temperatures and different amounts of soluble salts as damage products. In the low-Ca samples, the decrease of the phyllosilicate content (from 23.4 to 6.9 wt\%) is associated to the increase of the amorphous fraction (from 24 to 48\%). This clear negative correlation between the phyllosilicate content and the amorphous fraction indicates that in low-Ca systems vitrification processes are overwhelming with respect to nucleation and recrystallisation processes. By contrast, high-Ca samples present newly formed Ca(Mg) silicates (diopside from 5.7 to 27.2\%; anorthite from 1.4 to 8.7\%) and aluminium silicates (gehlenite only in two samples, 6.2 and 7.7\%) associated to the decrease of quartz (from 27.7 to 11.5\%), phyllosilicate (from 6.5\% until complete break down) and amorphous (from 30 to 14\%) phase fractions. These findings support the role played by the CaO(MgO) content deriving from carbonates decomposition which reacts with Al2O3 and SiO2 oxides from dehydroxylated clay minerals and quartz grains. The above results have been obtained by X-ray powder diffraction data using the combined Rietveld refinement - internal standard method in order to estimate both the crystalline and the amorphous phase fractions. In addition, the coexistence of two distinct plagioclases in high-Ca samples was modelled as follows: a primary albite, which tends to incorporate Ca during the firing process as demonstrated by the increasing of gamma crystallographic angle, and a newly formed anorthite. Finally, by difference between the X-ray fluorescence data and the chemical compositions inferred by QPA, it proved possible to roughly estimate the residual chemical composition attributable to the amorphous fraction. On the basis of our data, we believe that Rietveld refinement combined with the internal standard method represent a powerful tool to better characterise complex polycrystalline and amorphous mixture as in the case of historical bricks}, language = {en} } @article{Bals2005, author = {Bals, Hansj{\"u}rgen}, title = {Neue Haushaltssteuerung}, isbn = {3-8100-4082-7}, year = {2005}, language = {de} } @article{Bandau2005, author = {Bandau, Anja}, title = {Verwaltigung als Trope ? Texte {\"u}ber den Genozid in Ruanda}, isbn = {3-89626- 538-5}, year = {2005}, language = {de} } @phdthesis{Bannier2005, author = {Bannier, Claudia}, title = {Die schuldrechtlichen und wechselrechtlichen Haftungsprobleme bei der Forfaitierung von Exportforderungen : zugleich ein Beitrag zu den historischen und teleologischen Grundlagen der Wechselstrenge}, series = {Juristische Reihe Tenea}, volume = {103}, journal = {Juristische Reihe Tenea}, publisher = {TENEA-Verl.; Jurawelt}, address = {Bristol; Birkenau}, isbn = {3-86504-145-0}, pages = {VI, 170 S}, year = {2005}, language = {de} } @article{BanningDeubelKluthetal.2005, author = {Banning, Anja and Deubel, S. and Kluth, Dirk and Zhou, Z. W. and Brigelius-Floh{\´e}, Regina}, title = {The GI-GPx gene is a target for Nrf2}, issn = {0270-7306}, year = {2005}, abstract = {The gastrointestinal glutathione peroxidase (GI-GPx, GPx2) is a selenoprotein that was suggested to act as barrier against hydroperoxide absorption but has also been implicated in the control of inflammation and malignant growth. In CaCo-2 cells, GI-GPx was induced by t-butyl hydroquinone (tBHQ) and sulforaphane (SFN), i.e., "antioxidants" known to activate the "antioxidant response element" (ARE) via electrophilic thiol modification of Keap1 in the Nrf2/ Keap1 system. The functional significance of a putative ARE in the GI-GPx promoter was validated by transcriptional activation of reporter gene constructs upon exposure to electrophiles (tBHQ, SFN, and curcumin) or overexpression of Nrf2 and by reversal of these effects by mutation of the ARE in the promoter and by overexpressed Keap1. Binding of Nrf2 to the ARE sequence in authentic gpx2 was corroborated by chromatin immunoprecipitation. Thus, the presumed natural antioxidants sulforaphane and curcumin may exert their anti-inflammatory and anticarcinogenic effects not only by induction of phase 2 enzymes but also by the up-regulation of the selenoprotein GI-GPx}, language = {en} } @phdthesis{Banning2005, author = {Banning, Antje}, title = {Selenabh{\"a}ngige Glutathionperoxidasen als Mediatoren und Ziele der intrazellul{\"a}ren Redoxregulation : Identifizierung der GI-GPx als Ziel f{\"u}r Nrf2 und der PHGPx ...}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-5436}, school = {Universit{\"a}t Potsdam}, year = {2005}, abstract = {Das 1817 erstmals schriftlich erw{\"a}hnte Selen galt lange Zeit nur als toxisch und sogar als procancerogen, bis es 1957 von Schwarz und Foltz als essentielles Spurenelement erkannt wurde, dessen biologische Funktionen in S{\"a}ugern durch Selenoproteine vermittelt werden. Die Familie der Glutathionperoxidasen nimmt hierbei eine wichtige Stellung ein. F{\"u}r diese sind konkrete Funktionen und die dazugeh{\"o}rigen molekularen Mechanismen, welche {\"u}ber die von ihnen katalysierte Hydroperoxidreduktion und damit verbundene antioxidative Kapazit{\"a}t hinausgehen, bislang nur unzureichend beschrieben worden. Die Funktion der gastrointestinalen Glutathionperoxidase (GI-GPx) wird als Barriere gegen eine Hydroperoxidabsorption im Gastrointestinaltrakt definiert. Neuen Erkenntnissen zufolge wird die GI-GPx aber auch in verschiedenen Tumoren verst{\"a}rkt exprimiert, was weitere, bis dato unbekannte, Funktionen dieses Enzymes wahrscheinlich macht. Um m{\"o}gliche neue Funktionen der GI-GPx, vor allem w{\"a}hrend der Cancerogenese, abzuleiten, wurde hier die transkriptionale Regulation der GI-GPx detaillierter untersucht. Die Sequenzanalyse des humanen GI-GPx-Promotors ergab das Vorhandensein von zwei m{\"o}glichen "antioxidant response elements" (ARE), bei welchen es sich um Erkennungssequenzen des Transkriptionsfaktors Nrf2 handelt. Die meisten der bekannten Nrf2-Zielgene geh{\"o}ren in die Gruppe der Phase-II-Enzyme und verf{\"u}gen {\"u}ber antioxidative und/oder detoxifizierende Eigenschaften. Sowohl auf Promotorebene als auch auf mRNA- und Proteinebene konnte die Expression der GI-GPx durch typische, in der Nahrung enthaltene, Nrf2-Aktivatoren wie z.B. Sulforaphan oder Curcumin induziert werden. Eine direkte Beteiligung von Nrf2 wurde durch Cotransfektion von Nrf2 selbst bzw. von Keap1, das Nrf2 im Cytoplasma festh{\"a}lt, demonstriert. Somit konnte die GI-GPx eindeutig als Nrf2-Zielgen identifiziert werden. Ob sich die GI-GPx in die Gruppe der antiinflammatorischen und anticancerogenen Phase-II-Enzyme einordnen l{\"a}sst, bleibt noch zu untersuchen. Die Phospholipidhydroperoxid Glutathionperoxidase (PHGPx) nimmt aufgrund ihres breiten Substratspektrums, ihrer hohen Lipophilie und ihrer F{\"a}higkeit, Thiole zu modifizieren, eine Sonderstellung innerhalb der Familie der Glutathionperoxidasen ein. Mit Hilfe eines PHGPx-{\"u}berexprimierenden Zellmodells wurden deshalb Beeinflussungen des zellul{\"a}ren Redoxstatus und daraus resultierende Ver{\"a}nderungen in der Aktivit{\"a}t redoxsensitiver Transkriptionsfaktorsysteme und in der Expression atheroskleroserelevanter Adh{\"a}sionsmolek{\"u}le untersucht. Als Transkriptionsfaktoren wurden NF-kB und Nrf2 ausgew{\"a}hlt. Die Bindung von NF-kB an sein entsprechendes responsives Element in der DNA erfordert das Vorhandensein freier Thiole, wohingegen Nrf2 durch Thiolmodifikation von Keap1 freigesetzt wird und in den Kern transloziert. Eine erh{\"o}hte Aktivit{\"a}t der PHGPx resultierte in einer Erh{\"o}hung des Verh{\"a}ltnisses von GSH zu GSSG, andererseits aber in einer verminderten Markierbarkeit freier Proteinthiole. PHGPx-{\"U}berexpression reduzierte die IL-1-induzierte NF-kB-Aktivit{\"a}t, die sich in einer verminderten NF-kB-DNA-Bindef{\"a}higkeit und Transaktivierungsaktivit{\"a}t ausdr{\"u}ckte. Auch war die Proliferationsrate der Zellen vermindert. Die Expression des NF-kB-regulierten vaskul{\"a}ren Zelladh{\"a}sionsmolek{\"u}ls, VCAM-1, war ebenfalls deutlich verringert. Umgekehrt war in PHGPx-{\"u}berexprimierenden Zellen eine erh{\"o}hte Nrf2-Aktivit{\"a}t und Expression der Nrf2-abh{\"a}ngigen H{\"a}moxygenase-1 zu verzeichnen. Letzte kann f{\"u}r die meisten der beobachteten Effekte verantwortlich gemacht werden. Die hier dargestellten Ergebnisse verdeutlichen, dass eine Modifizierung von Proteinthiolen als wichtige Determinante f{\"u}r die Regulation der Expression und Funktion von Glutathionperoxidasen angesehen werden kann. Entgegen fr{\"u}heren Vermutungen, welche oxidative Vorg{\"a}nge generell mit pathologischen Ver{\"a}nderungen assoziierten, scheint ein moderater oxidativer Stress, bedingt durch eine transiente Thiolmodifikation, durchaus g{\"u}nstige Auswirkungen zu haben, da, wie hier dargelegt, verschiedene, miteinander interagierende, cytoprotektive Mechanismen ausgel{\"o}st werden. Hieran wird deutlich, dass sich "antioxidative Wirkung" oder "oxidativer Stress" keineswegs nur auf "gute" oder "schlechte" Vorg{\"a}nge beschr{\"a}nken lassen, sondern im Zusammenhang mit den beeinflussten (patho)physiologischen Prozessen und dem Ausmaß der "St{\"o}rung" des physiologischen Redoxgleichgewichtes betrachtet werden m{\"u}ssen.}, subject = {Selen}, language = {de} } @article{BaptistaKrautGrebogi2005, author = {Baptista, Murilo da Silva and Kraut, Suso and Grebogi, Celso}, title = {Poincare recurrence and measure of hyperbolic and nonhyperbolic chaotic attractors}, issn = {0031-9007}, year = {2005}, abstract = {We study Poincare recurrence of chaotic attractors for regions of finite size. Contrary to the standard case, where the size of the recurrent regions tends to zero, the measure is no longer supported solely by unstable periodic orbits of finite length inside it, but also by other special recurrent trajectories, located outside that region. The presence of the latter leads to a deviation of the distribution of the Poincare first return times from a Poissonian. Consequently, by taking into account the contribution of these special recurrent trajectories, a corrected estimate of the measure is obtained. This has wide experimental implications, as in the laboratory all returns can exclusively be observed for regions of finite size, and only unstable periodic orbits of finite length can be detected}, language = {en} } @article{BaptistaKurths2005, author = {Baptista, Murilo da Silva and Kurths, J{\"u}rgen}, title = {Chaotic channel}, issn = {1539-3755}, year = {2005}, abstract = {This work combines the theory of chaotic synchronization with the theory of information in order to introduce the chaotic channel, an active medium formed by connected chaotic systems. This subset of a large chaotic net represents the path along which information flows. We show that the possible amount of information exchange between the transmitter, where information enters the net, and the receiver, the destination of the information, is proportional to the level of synchronization between these two special subsystems}, language = {en} } @article{BaptistaPereiraSartorellietal.2005, author = {Baptista, Murilo da Silva and Pereira, Tiago and Sartorelli, J. C. and Caldas, Ibere Luiz and Kurths, J{\"u}rgen}, title = {Non-transitive maps in phase synchronization}, year = {2005}, abstract = {Concepts from Ergodic Theory are used to describe the existence of special non-transitive maps in attractors of phase synchronous chaotic oscillators. In particular, it is shown that, for a class of phase-coherent oscillators, these special maps imply phase synchronization. We illustrate these ideas in the sinusoidally forced Chua's circuit and two coupled Rossler oscillators. Furthermore, these results are extended to other coupled chaotic systems. In addition, a phase for a chaotic attractor is defined from the tangent vector of the flow. Finally, it is discussed how these maps can be used for the real-time detection of phase synchronization in experimental systems. (c) 2005 Elsevier B.V. All rights reserved}, language = {en} } @article{BarbierOesterheltLarsonetal.2005, author = {Barbier, Guillaume and Oesterhelt, Christine and Larson, Matthew D. and Halgren, Robert G. and Wilkerson, Curtis and Garavito, Michael R. and Benning, Christoph and Weber, Andreas P. M.}, title = {Comparative genomics of two closely related unicellular thermo-acidophilic red algae, Galdieria sulphuraria and Cyanidioschyzon merolae, reveals the molecular basis of the metabolic flexibility of Galdieria sulphuraria and sigant differences in carbohydrate metabolism of both algae}, year = {2005}, abstract = {Unicellular algae serve as models for the study and discovery of metabolic pathways, for the functional dissection of cell biological processes such as organellar division and cell motility, and for the identification of novel genes and gene functions. The recent completion of several algal genome sequences and expressed sequence tag collections and the establishment of nuclear and organellar transformation methods has opened the way for functional genomics approaches using algal model systems. The thermo-acidophilic unicellular red alga Galdieria sulphuraria represents a particularly interesting species for a genomics approach owing to its extraordinary metabolic versatility such as heterotrophic and mixotrophic growth on more than 50 different carbon sources and its adaptation to hot acidic environments. However, the ab initio prediction of genes required for unknown metabolic pathways from genome sequences is not trivial. A compelling strategy for gene identification is the comparison of similarly sized genomes of related organisms with different physiologies. Using this approach, candidate genes were identified that are critical to the metabolic versatility of Galdieria. Expressed sequence tags and high-throughput genomic sequence reads covering >70\% of the G. sulphuraria genome were compared to the genome of the unicellular, obligate photoautotrophic red alga Cyanidioschyzon merolae. More than 30\% of the Galdieria sequences did not relate to any of the Cyandioschyzon genes. A closer inspection of these sequences revealed a large number of membrane transporters and enzymes of carbohydrate metabolism that are unique to Galdieria. Based on these data, it is proposed that genes involved in the uptake of reduced carbon compounds and enzymes involved in their metabolism are crucial to the metabolic flexibility of G. sulphuraria}, language = {en} }