@article{NoteKoetzKosmella2006, author = {Note, Carine and Koetz, Joachim and Kosmella, Sabine}, title = {Structural changes in poly(ethyleneimine) modified microemulsion}, series = {Journal of colloid and interface science}, volume = {302}, journal = {Journal of colloid and interface science}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0021-9797}, doi = {10.1016/j.jcis.2006.06.071}, pages = {662 -- 668}, year = {2006}, abstract = {The influence of branched poly(ethyleneimine) on the phase behavior of the system sodium dodecylsulfate/toluene-pentanol (1:1)/water has been studied. The isotropic microemulsions still exist when water is replaced with aqueous solutions of PEI (up to 30\% in weight), but their stability is significantly influenced. From a polymer concentration of 20 wt\%, the polymer enhances the solubilization of water in oil, changes the sign of the spontaneous curvature of the surfactant film, and induces an inversion of the microemulsion type from water-in-oil (L-2) to oil-in-water (L-1), by the formation of a bicontinuous channel. Further investigations show that the addition of polymer in the L-2 phase changes the droplet-droplet interactions as the conductivity drops and the percolation disappears. In the bicontinuous channel, higher viscosities can be detected, as well as a weak percolation followed by a steep increase of the conductivity, which can be related to evident structural changes in the system. DSC measurements allow then to follow the changes of the water properties in the system, from interfacial-water in the L-2 phase to free-water in the sponge-like phase. Finally, all the measurements performed permit to characterize the structural transitions in the system and to understand the role of the added polymer.}, language = {en} } @article{PawlikPikovskij2006, author = {Pawlik, Andreas H. and Pikovskij, Arkadij}, title = {Control of oscillators coherence by multiple delayed feedback}, series = {Modern physics letters : A, Particles and fields, gravitation, cosmology, nuclear physics}, volume = {358}, journal = {Modern physics letters : A, Particles and fields, gravitation, cosmology, nuclear physics}, number = {3}, publisher = {American Institute of Physics}, address = {Amsterdam}, issn = {0375-9601}, doi = {10.1016/j.physleta.2006.05.013}, pages = {181 -- 185}, year = {2006}, abstract = {We demonstrate that a multiple delayed feedback is a powerful tool to control coherence properties of autonomous self-sustained oscillators. We derive the equation for the phase dynamics in presence of noise and delay, and analyze it analytically. In Gaussian approximation a closed set of equations for the frequency and the diffusion constant is obtained. Solutions of these equations are in good agreement with direct numerical simulations.}, language = {en} } @article{YangJaiserStilleretal.2006, author = {Yang, Xiao Hui and Jaiser, Frank and Stiller, Burkhard and Neher, Dieter and Galbrecht, Frank and Scherf, Ullrich}, title = {Efficient polymer electrophosphoreseent devices with interfacial layers}, series = {Advanced functional materials}, volume = {16}, journal = {Advanced functional materials}, number = {16}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1616-301X}, doi = {10.1002/adfm.200500834}, pages = {2156 -- 2162}, year = {2006}, abstract = {It is shown that several polymers can form insoluble interfacial layers on a poly (ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) layer after annealing of the double-layer structure. The thickness of the interlayer is dependent on the characteristics of the underlying PEDOT.PSS and the molecular weight of the polymers. It is further shown that the electronic structures of the interlayer polymers have a significant effect on the properties of red-light-emitting polymer-based electrophosphorescent devices. Upon increasing the highest occupied molecular orbital and lowest unoccupied molecular orbital positions, a significant increase in current density and device efficiency is observed. This is attributed to efficient blocking of electrons in combination with direct injection of holes from the interlayer to the phosphorescent dye. Upon proper choice of the interlayer polymer, efficient red, polymer-based electrophosphorescent devices with a peak luminance efficiency of 5.5 cd A(-1) (external quantum efficiency = 6 \%) and a maximum power-conversion efficiency of 5 Im W-1 can be realized.}, language = {en} } @article{LangeWagnerZentel2006, author = {Lange, Birger and Wagner, J{\"u}rgen and Zentel, Rudolf}, title = {Fabrication of robust high-quality ORMOCER (R) inverse opals}, series = {Macromolecular rapid communications}, volume = {27}, journal = {Macromolecular rapid communications}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1022-1336}, doi = {10.1002/marc.200600429}, pages = {1746 -- 1751}, year = {2006}, abstract = {The nanostructuring of ORMOCER (R) to form inverse opals is described. For this purpose a polymer opal is used as a template and infiltrated with liquid ORMOCER (R). After photopolymerization of the resin the host opal is dissolved in tetrahydrofuran and an ORMOCER (R) inverse opal is obtained. It shows excellent periodicity (by SEM) and optical properties to reveal a high degree of face centered cubic order. This replication process leads to a nanostructured photonic crystal with the outstanding mechanical properties of ORMOCER (R) and high temperature stability up to 350 degrees C.}, language = {en} } @article{BaptistaGrebogiKoberle2006, author = {Baptista, Murilo da Silva and Grebogi, Celso and Koberle, Roland}, title = {Dynamically multilayered visual system of the multifractal fly}, series = {Physical review letters}, volume = {97}, journal = {Physical review letters}, number = {17}, publisher = {American Physical Society}, address = {College Park}, issn = {0031-9007}, doi = {10.1103/PhysRevLett.97.178102}, pages = {4}, year = {2006}, language = {en} } @article{Green2006, author = {Green, Antony Dubach}, title = {The independence of phonology and morphology: The Celtic mutations}, series = {Lingua : international review of general linguistics}, volume = {116}, journal = {Lingua : international review of general linguistics}, number = {11}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0024-3841}, doi = {10.1016/j.lingua.2004.09.002}, pages = {1946 -- 1985}, year = {2006}, abstract = {One of the most important insights of Optimality Theory (Prince and Smolensky, 1993) is that phonological processes can be reduced to the interaction between faithfulness and universal markedness principles. In the most constrained version of the theory, all phonological processes should be thus reducible. This hypothesis is tested by alternations that appear to be phonological but in which universal markedness principles appear to play no role. If we are to pursue the claim that all phonological processes depend on the interaction of faithfulness and markedness, then processes that are not dependent on markedness must lie outside phonology. In this paper I will examine a group of such processes, the initial consonant mutations of the Celtic languages, and argue that they belong entirely to the morphology of the languages, not the phonology.}, language = {en} } @misc{tenFreyhausHuntgeburthWingeretal.2006, author = {ten Freyhaus, Henrik and Huntgeburth, Michael and Winger, Kirstin and B{\"a}umer, Anselm T. and Vantler, Marius and Bekhite, Mohamed M. and Wartenberg, Maria and Sauer, Heinrich and Sparwel, Jan and Rosenkranz, Stephan}, title = {Inhibition of ROS liberation attenuates PDGF-Dependent chemotaxis, but not proliferation in vascular smooth muscle cells - Critical role of Src kinase}, series = {Circulation : an American Heart Association journal}, volume = {114}, journal = {Circulation : an American Heart Association journal}, publisher = {Lippincott Williams \& Wilkins}, address = {Philadelphia}, issn = {0009-7322}, pages = {296 -- 297}, year = {2006}, language = {en} } @article{TorjekWituckaWallMeyeretal.2006, author = {Torjek, Otto and Witucka-Wall, Hanna and Meyer, Rhonda C. and von Korff, Maria and Kusterer, Barbara and Rautengarten, Carsten and Altmann, Thomas}, title = {Segregation distortion in Arabidopsis C24/Col-0 and Col-0/C24 recombinant inbred line populations is due to reduced fertility caused by epistatic interaction of two loci}, series = {Theoretical and applied genetics}, volume = {113}, journal = {Theoretical and applied genetics}, publisher = {Springer}, address = {Berlin}, issn = {0040-5752}, doi = {10.1007/s00122-006-0402-3}, pages = {1551 -- 1561}, year = {2006}, abstract = {A new large set of reciprocal recombinant inbred lines (RILs) was created between the Arabidopsis accessions Col-0 and C24 for quantitative trait mapping approaches, consisting of 209 Col-0 x C24 and 214 C24 x Col-0 F-7 RI lines. Genotyping was performed using 110 evenly distributed framework single nucleotide polymorphism markers, yielding a genetic map of 425.70 cM, with an average interval of 3.87 cM. Segregation distortion (SD) was observed in several genomic regions during the construction of the genetic map. Linkage disequilibrium analysis revealed an association between a distorted region at the bottom of chromosome V and a non-distorted region on chromosome IV. A detailed analysis of the RILs for these two regions showed that an SD occurred when homozygous Col-0 alleles on chromosome IV coincided with homozygous C24 alleles at the bottom of chromosome V. Using nearly isogenic lines segregating for the distorted region we confirmed that this genotypic composition leads to reduced fertility and fitness.}, language = {en} } @article{HobbhahnKuechmeisterPorembski2006, author = {Hobbhahn, Nina and K{\"u}chmeister, Heike and Porembski, Stefan}, title = {Pollination biology of mass flowering terrestrial Utricularia species (Lentibulariaceae) in the Indian Western Ghats}, series = {Plant biology}, volume = {8}, journal = {Plant biology}, number = {6}, publisher = {Wiley-Blackwell}, address = {Oxford}, issn = {1435-8603}, doi = {10.1055/s-2006-924566}, pages = {791 -- 804}, year = {2006}, abstract = {The pollination biology of three mass flowering Utricularia species of the Indian Western Ghats, U. albocaerulea, U. purpurascens, and U. reticulata, was studied for the first time by extensive observation of flower visitors, pollination experiments, and nectar analyses. The ephemerality of the Utricularia habitats on lateritic plateaus, weather conditions adverse to insects, lack of observations of flower visitors to other Utricularia spp., and the predominance of at least. facultative autogamy in the few Utricularia species studied so far suggested that an autogamous breeding system is the common case in the genus. In contrast, we showed that the studied populations are incapable of autonomous selfing, or that it is an event of negligible rarity, although P/O was similarily low as in autogamous species investigated by other authors. In all three species the spatial arrangement of the reproductive organs makes an insect vector necessary for pollen transfer between and within flowers. However, U. purpurascens and U. reticulata are highly self-compatible, which allows for visitor-mediated auto-selfing and geitonogamy on inflorescence and clone level. Floral nectar is present in extremely small volumes in all three species, but sugar concentrations are high. More than 50 species of bees, butterflies, moths, hawk moths, and clipterans were observed to visit the flowers, and flower morphology facilitated pollination by all observed visitors. The results are discussed in the context of the phenological characteristics of the studied species, especially the phenomenon of mass flowering, and the environmental conditions of their habitats.}, language = {en} } @article{MontbrioPazoSchmidt2006, author = {Montbrio, Ernest and Pazo, Diego and Schmidt, J{\"u}rgen}, title = {Time delay in the Kuramoto model with bimodal frequency distribution}, series = {Physical review : E, Statistical, nonlinear and soft matter physics}, volume = {74}, journal = {Physical review : E, Statistical, nonlinear and soft matter physics}, publisher = {APS}, address = {College Park}, issn = {1539-3755}, doi = {10.1103/PhysRevE.74.056201}, pages = {5}, year = {2006}, abstract = {We investigate the effects of a time-delayed all-to-all coupling scheme in a large population of oscillators with natural frequencies following a bimodal distribution. The regions of parameter space corresponding to synchronized and incoherent solutions are obtained both numerically and analytically for particular frequency distributions. In particular, we find that bimodality introduces a new time scale that results in a quasiperiodic disposition of the regions of incoherence.}, language = {en} }