@misc{EhlertUngerSaalfrank2014,
  author    = {Ehlert, Christopher and Unger, Wolfgang E. S. and Saalfrank, Peter},
  title     = {C K-edge NEXAFS spectra of graphene with physical and chemical defects},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-74429},
  pages     = {14083 -- 14095},
  year      = {2014},
  abstract  = {Recently, C K-edge Near Edge X-ray Absorption Fine Structure (NEXAFS) spectra of graphite (HOPG) surfaces have been measured for the pristine material, and for HOPG treated with either bromine or krypton plasmas (Lippitz et al., Surf. Sci., 2013, 611, L1). Changes of the NEXAFS spectra characteristic for physical (krypton) and/or chemical/physical modifications of the surface (bromine) upon plasma treatment were observed. Their molecular origin, however, remained elusive. In this work we study by density functional theory, the effects of selected point and line defects as well as chemical modifications on NEXAFS carbon K-edge spectra of single graphene layers. For Br-treated surfaces, also Br 3d X-ray Photoelectron Spectra (XPS) are simulated by a cluster approach, to identify possible chemical modifications. We observe that some of the defects related to plasma treatment lead to characteristic changes of NEXAFS spectra, similar to those in experiment. Theory provides possible microscopic origins for these changes.},
  language  = {en}
}
@misc{EhrigGolasHabeletal.2014,
  author    = {Ehrig, Hartmut and Golas, Ulrike and Habel, Annegret and Lambers, Leen and Orejas, Fernando},
  title     = {M-adhesive transformation systems with nested application conditions},
  series = {Postprints der Universit{\"a}t Potsdam : Digital Engineering Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Digital Engineering Reihe},
  number    = {001},
  doi       = {10.25932/publishup-41565},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-415651},
  pages     = {50},
  year      = {2014},
  abstract  = {Nested application conditions generalise the well-known negative application conditions and are important for several application domains. In this paper, we present Local Church-Rosser, Parallelism, Concurrency and Amalgamation Theorems for rules with nested application conditions in the framework of M-adhesive categories, where M-adhesive categories are slightly more general than weak adhesive high-level replacement categories. Most of the proofs are based on the corresponding statements for rules without application conditions and two shift lemmas stating that nested application conditions can be shifted over morphisms and rules.},
  language  = {en}
}
@misc{Elsenhans2014,
  author    = {Elsenhans, Hartmut},
  title     = {Kapitalismus ja - aber richtig!},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-70006},
  year      = {2014},
  abstract  = {Von einem destruktiven Keynesianismus wird angenommen, dass er das Besch{\"a}ftigungsproblem aufwirft - allerdings nur in Deutschland und zulasten der Partner in der EU. Wer Wachstum von steigenden Export{\"u}bersch{\"u}ssen erwartet - ohne Ausweitung des deutschen Binnenmarktes -, exportiert auch Arbeitslosigkeit und Wirtschaftskrisen.},
  language  = {de}
}
@misc{ErmeydanCabaneGierlingeretal.2014,
  author    = {Ermeydan, Mahmut Ali and Cabane, Etienne and Gierlinger, Notburga and Koetz, Joachim and Burgert, Ingo},
  title     = {Improvement of wood material properties via in situ polymerization of styrene into tosylated cell walls},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-98736},
  pages     = {8},
  year      = {2014},
  abstract  = {As an engineering material derived from renewable resources, wood possesses excellent mechanical properties in view of its light weight but also has some disadvantages such as low dimensional stability upon moisture changes and low durability against biological attack. Polymerization of hydrophobic monomers in the cell wall is one of the potential approaches to improve the dimensional stability of wood. A major challenge is to insert hydrophobic monomers into the hydrophilic environment of the cell walls, without increasing the bulk density of the material due to lumen filling. Here, we report on an innovative and simple method to insert styrene monomers into tosylated cell walls (i.e. -OH groups from natural wood polymers are reacted with tosyl chloride) and carry out free radical polymerization under relatively mild conditions, generating low wood weight gains. In-depth SEM and confocal Raman microscopy analysis are applied to reveal the distribution of the polystyrene in the cell walls and the lumen. The embedding of polystyrene in wood results in reduced water uptake by the wood cell walls, a significant increase in dimensional stability, as well as slightly improved mechanical properties measured by nanoindentation.},
  language  = {en}
}
@misc{ErmeydanCabaneHassetal.2014,
  author    = {Ermeydan, Mahmut Ali and Cabane, Etienne and Hass, Philipp and Koetz, Joachim and Burgert, Ingo},
  title     = {Fully biodegradable modification of wood for improvement of dimensional stability and water absorption properties by poly(ε-caprolactone) grafting into the cell walls},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-97265},
  pages     = {3313 -- 3321},
  year      = {2014},
  abstract  = {Materials derived from renewable resources are highly desirable in view of more sustainable manufacturing. Among the available natural materials, wood is one of the key candidates, because of its excellent mechanical properties. However, wood and wood-based materials in engineering applications suffer from various restraints, such as dimensional instability upon humidity changes. Several wood modification treatments increase water repellence, but the insertion of hydrophobic polymers can result in a composite material which cannot be considered as renewable anymore. In this study, we report on the grafting of the fully biodegradable poly(ε-caprolactone) (PCL) inside the wood cell walls by Sn(Oct)2 catalysed ring-opening polymerization (ROP). The presence of polyester chains within the wood cell wall structure is monitored by confocal Raman imaging and spectroscopy as well as scanning electron microscopy. Physical tests reveal that the modified wood is more hydrophobic due to the bulking of the cell wall structure with the polyester chains, which results in a novel fully biodegradable wood material with improved dimensional stability.},
  language  = {en}
}
@misc{FriedelSchlagenhaufBecketal.2014,
  author    = {Friedel, Eva and Schlagenhauf, Florian and Beck, Anne and Dolan, Raymond J. and Huys, Quentin J. M. and Rapp, Michael A. and Heinz, Andreas},
  title     = {The effects of life stress and neural learning signals on fluid intelligence},
  series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  number    = {621},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-43514},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435140},
  pages     = {35 -- 43},
  year      = {2014},
  abstract  = {Fluid intelligence (fluid IQ), defined as the capacity for rapid problem solving and behavioral adaptation, is known to be modulated by learning and experience. Both stressful life events (SLES) and neural correlates of learning [specifically, a key mediator of adaptive learning in the brain, namely the ventral striatal representation of prediction errors (PE)] have been shown to be associated with individual differences in fluid IQ. Here, we examine the interaction between adaptive learning signals (using a well-characterized probabilistic reversal learning task in combination with fMRI) and SLES on fluid IQ measures. We find that the correlation between ventral striatal BOLD PE and fluid IQ, which we have previously reported, is quantitatively modulated by the amount of reported SLES. Thus, after experiencing adversity, basic neuronal learning signatures appear to align more closely with a general measure of flexible learning (fluid IQ), a finding complementing studies on the effects of acute stress on learning. The results suggest that an understanding of the neurobiological correlates of trait variables like fluid IQ needs to take socioemotional influences such as chronic stress into account.},
  language  = {en}
}
@misc{GambaJonesTeasdaleetal.2014,
  author    = {Gamba, Cristina and Jones, Eppie R. and Teasdale, Matthew D. and McLaughlin, Russell L. and Gonz{\´a}lez-Fortes, Gloria M. and Mattiangeli, Valeria and Dombor{\´o}czki, L{\´a}szl{\´o} and Kőv{\´a}ri, Ivett and Pap, Ildik{\´o} and Anders, Alexandra and Whittle, Alasdair and Dani, J{\´a}nos and Raczky, P{\´a}l and Higham, Thomas F. G. and Hofreiter, Michael and Bradley, Daniel G. and Pinhasi, Ron},
  title     = {Genome flux and stasis in a five millennium transect of European prehistory},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  volume    = {5},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1332},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-43799},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-437999},
  pages     = {9},
  year      = {2014},
  abstract  = {The Great Hungarian Plain was a crossroads of cultural transformations that have shaped European prehistory. Here we analyse a 5,000-year transect of human genomes, sampled from petrous bones giving consistently excellent endogenous DNA yields, from 13 Hungarian Neolithic, Copper, Bronze and Iron Age burials including two to high (similar to 22x) and seven to similar to 1x coverage, to investigate the impact of these on Europe's genetic landscape. These data suggest genomic shifts with the advent of the Neolithic, Bronze and Iron Ages, with interleaved periods of genome stability. The earliest Neolithic context genome shows a European hunter-gatherer genetic signature and a restricted ancestral population size, suggesting direct contact between cultures after the arrival of the first farmers into Europe. The latest, Iron Age, sample reveals an eastern genomic influence concordant with introduced Steppe burial rites. We observe transition towards lighter pigmentation and surprisingly, no Neolithic presence of lactase persistence.},
  language  = {en}
}
@misc{Germano2014,
  author    = {Germano, Gustavo},
  title     = {Aus{\^e}ncias Brasil},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-71139},
  year      = {2014},
  abstract  = {Von der Milit{\"a}rdiktatur ermordet und spurlos verschwunden - diese Ausstellung greift zur{\"u}ck auf Fotoalben der Familienangeh{\"o}rigen von Brasilianern, die der systematischen Repression, Folter und Verschleppung der brasilianischen Milit{\"a}rdiktatur (1964-1985) zum Opfer gefallen sind: Arbeiter, Stadtguerilleros, Studenten, Akademiker, ganze Familien.},
  language  = {de}
}
@misc{GhoshCherstvyMetzler2014,
  author    = {Ghosh, Surya K. and Cherstvy, Andrey G. and Metzler, Ralf},
  title     = {Non-universal tracer diffusion in crowded media of non-inert obstacles},
  publisher = {The Royal Society of Chemistry},
  address   = {Cambridge},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-77128},
  pages     = {1847 -- 1858},
  year      = {2014},
  abstract  = {We study the diffusion of a tracer particle, which moves in continuum space between a lattice of excluded volume, immobile non-inert obstacles. In particular, we analyse how the strength of the tracer-obstacle interactions and the volume occupancy of the crowders alter the diffusive motion of the tracer. From the details of partitioning of the tracer diffusion modes between trapping states when bound to obstacles and bulk diffusion, we examine the degree of localisation of the tracer in the lattice of crowders. We study the properties of the tracer diffusion in terms of the ensemble and time averaged mean squared displacements, the trapping time distributions, the amplitude variation of the time averaged mean squared displacements, and the non-Gaussianity parameter of the diffusing tracer. We conclude that tracer-obstacle adsorption and binding triggers a transient anomalous diffusion. From a very narrow spread of recorded individual time averaged trajectories we exclude continuous type random walk processes as the underlying physical model of the tracer diffusion in our system. For moderate tracer-crowder attraction the motion is found to be fully ergodic, while at stronger attraction strength a transient disparity between ensemble and time averaged mean squared displacements occurs. We also put our results into perspective with findings from experimental single-particle tracking and simulations of the diffusion of tagged tracers in dense crowded suspensions. Our results have implications for the diffusion, transport, and spreading of chemical components in highly crowded environments inside living cells and other structured liquids.},
  language  = {en}
}
@misc{Goeschel2014,
  author    = {Goeschel, Albrecht},
  title     = {Von Vorteilsextremismus und Gleichgewichtsidealismus},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-69979},
  year      = {2014},
  abstract  = {Der Ausgang der Bundestagswahl 2013 hat {\"u}ber die Zukunft des Modells Europa entschieden, noch bevor die Europawahlen 2014 auch in Deutschland stattgefunden haben. Mit dem Ergebnis dieser Bundestagswahl wird ein vom Hegemon Deutschland zugleich auch f{\"u}r die Eliten Europas mitstatuierter Exportund Finanzkeynesianismus f{\"u}r lange Zeit etabliert werden.},
  language  = {de}
}