TY - CHAP A1 - Wippert, Pia-Maria A1 - Driesslein, David A1 - De Witt Huberts, Jessie T1 - Prediction of pain outcomes by stress parameters T2 - Psychoneuroendocrinology Y1 - 2015 U6 - https://doi.org/10.1016/j.psyneuen.2015.07.493 SN - 0306-4530 VL - 61 SP - 38 EP - 38 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Winter, Bodo A1 - Matlock, Teenie A1 - Shaki, Samuel A1 - Fischer, Martin H. T1 - Mental number space in three dimensions JF - Neuroscience & biobehavioral reviews : official journal of the International Behavioral Neuroscience Society N2 - A large number of experimental findings from neuroscience and experimental psychology demonstrated interactions between spatial cognition and numerical cognition. In particular, many researchers posited a horizontal mental number line, where small numbers are thought of as being to the left of larger numbers. This review synthesizes work on the mental association between space and number, indicating the existence of multiple spatial mappings: recent research has found associations between number and vertical space, as well as associations between number and near/far space. We discuss number space in three dimensions with an eye on potential origins of the different number mappings, and how these number mappings fit in with our current knowledge of brain organization and brain-culture interactions. We derive novel predictions and show how this research fits into a general view of cognition as embodied, grounded and situated. (C) 2015 Elsevier Ltd. All rights reserved. KW - Embodiment KW - Intra-parietal sulcus KW - Mental number line KW - Metaphor KW - Neglect KW - Spatial cognition KW - SNARC Y1 - 2015 U6 - https://doi.org/10.1016/j.neubiorev.2015.09.005 SN - 0149-7634 SN - 1873-7528 VL - 57 SP - 209 EP - 219 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Winkler, Michael A1 - Abel, Markus T1 - Small- and large-scale characterization and mixing properties in a thermally driven thin liquid film JF - Physical review : E, Statistical, nonlinear and soft matter physics N2 - We study aqueous, freestanding, thin films stabilized by a surfactant with respect to mixing and dynamical systems properties. With this special setup, a two-dimensional fluid can be realized experimentally. The physics of the system involves a complex interplay of thermal convection and interface and gravitational forces. Methodologically, we characterize the system using two classical dynamical systems properties: Lyapunov exponents and entropies. Our experimental setup produces convection with two stable eddies by applying a temperature gradient in one spot that yields weakly turbulent mixing. From dynamical systems theory, one expects a relation of entropies, Lyapunov exponents, a prediction with little experimental support. We can confirm the corresponding statements experimentally, on different scales using different methods. On the small scale the motion and deformation of fluid filaments of equal size (color imaging velocimetry) are used to compute Lyapunov exponents. On the large scale, entropy is computed by tracking the left-right motion of the center fluid jet at the separatrix between the two convection rolls. We thus combine here dynamical systems methods with a concrete application of mixing in a nanoscale freestanding thin film. Y1 - 2015 U6 - https://doi.org/10.1103/PhysRevE.92.063002 SN - 1539-3755 SN - 1550-2376 VL - 92 IS - 6 PB - American Physical Society CY - College Park ER - TY - JOUR A1 - Willner, Arne P. A1 - Barr, Sandra M. A1 - Glodny, Johannes A1 - Massonne, Hans-Joachim A1 - Sudo, Masafumi A1 - Thomson, Stuart N. A1 - Van Staal, Cees R. A1 - White, Chris E. T1 - Effects of fluid flow, cooling and deformation as recorded by Ar-40/Ar-39, Rb-Sr and zircon fission track ages in very low- to low-grade metamorphic rocks in Avalonian SE Cape Breton Island (Nova Scotia, Canada) JF - Geological magazine N2 - Ar-40/Ar-39 in situ UV laser ablation of white mica, Rb-Sr mineral isochrons and zircon fission track dating were applied to determine ages of very low- to low-grade metamorphic processes at 3.5 +/- 0.4 kbar, 280 +/- 30 degrees C in the Avalonian Mira terrane of SE Cape Breton Island (Nova Scotia). The Mira terrane comprises Neoproterozoic volcanic-arc rocks overlain by Cambrian sedimentary rocks. Crystallization of metamorphic white mica was dated in six metavolcanic samples by Ar-40/Ar-39 spot age peaks between 396 +/- 3 and 363 +/- 14 Ma. Rb-Sr systematics of minerals and mineral aggregates yielded two isochrons at 389 +/- 7 Ma and 365 +/- 8 Ma, corroborating equilibrium conditions during very low- to low-grade metamorphism. The dated white mica is oriented parallel to foliations produced by sinistral strike-slip faulting and/or folding related to the Middle-Late Devonian transpressive assembly of Avalonian terranes during convergence and emplacement of the neighbouring Meguma terrane. Exhumation occurred earlier in the NW Mira terrane than in the SE. Transpression was related to the closure of the Rheic Ocean between Gondwana and Laurussia by NW-directed convergence. The Ar-40/Ar-39 spot age spectra also display relict age peaks at 477-465 Ma, 439 Ma and 420-428 Ma attributed to deformation and fluid access, possibly related to the collision of Avalonia with composite Laurentia or to earlier Ordovician-Silurian rifting. Fission track ages of zircon from Mira terrane samples range between 242 +/- 18 and 225 +/- 21 Ma and reflect late Palaeozoic reburial and reheating close to previous peak metamorphic temperatures under fluid-absent conditions during rifting prior to opening of the Central Atlantic Ocean. KW - Ar-40/Ar-39 spot ages KW - Rb-Sr mineral isochrons KW - zircon fission tracks KW - very low-low-grade metamorphism KW - Avalonia KW - Devonian transpression KW - Rheic Ocean Y1 - 2015 U6 - https://doi.org/10.1017/S0016756814000508 SN - 0016-7568 SN - 1469-5081 VL - 152 IS - 5 SP - 767 EP - 787 PB - Cambridge Univ. Press CY - New York ER - TY - JOUR A1 - Wilke, Franziska Daniela Helena A1 - Vieth-Hillebrand, Andrea A1 - Naumann, Rudolf A1 - Erzinger, Jörg A1 - Horsfield, Brian T1 - Induced mobility of inorganic and organic solutes from black shales using water extraction: Implications for shale gas exploitation JF - Applied geochemistry : journal of the International Association of Geochemistry and Cosmochemistry N2 - The study reported here evaluates the degree to which metals, salt anions and organic compounds are released from shales by exposure to water, either in its pure form or mixed with additives commonly employed during shale gas exploitation. The experimental conditions used here were not intended to simulate the exploitation process itself, but nevertheless provided important insights into the effects additives have on solute partition behaviour under oxic to sub-oxic redox conditions. In order to investigate the mobility of major (e.g. Ca, Fe) and trace (e.g. As, Cd, Co, Mo, Pb, U) elements and selected organic compounds, we performed leaching tests with black shale samples from Bornholm, Denmark and Lower Saxony, Germany. Short-term experiments (24 h) were carried out at ambient pressure and temperatures of 100 degrees C using five different lab-made stimulation fluids. Two long-term experiments under elevated pressure and temperature conditions at 100 degrees C/100 bar were performed lasting 6 and 2 months, respectively, using a stimulation fluid containing commercially-available biocide, surfactant, friction reducer and clay stabilizer. Our results show that the amount of dissolved constituents at the end of the experiment is independent of the pH of the stimulation fluid but highly dependent on the composition of the black shale and the buffering capacity of specific components, namely pyrite and carbonates. Shales containing carbonates buffer the solution at pH 7-8. Sulphide minerals (e.g. pyrite) become oxidized and generate sulphuric acid leading to a pH of 2-3. This low pH is responsible for the overall much larger amount of cations dissolved from shales containing pyrite but little to no carbonate. The amount of elements released into the fluid is also dependent on the residence time, since as much as half of the measured 23 elements show highest concentrations within four days. Afterwards, the concentration of most of the elemental species decreased pointing to secondary precipitations. Generally, in our experiments less than 15% of each analysed element contained in the black shale was mobilised into the fluid. (C) 2015 Elsevier Ltd. All rights reserved. KW - Unconventional gas KW - Black shales KW - Stimulation fluids KW - Element mobility KW - Batch experiments Y1 - 2015 U6 - https://doi.org/10.1016/j.apgeochem.2015.07.008 SN - 0883-2927 VL - 63 SP - 158 EP - 168 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Wilke, Franziska Daniela Helena A1 - Schmidt, Alexander A1 - Ziemann, Martin Andreas T1 - Subduction, peak and multi-stage exhumation metamorphism: Traces from one coesite-bearing eclogite, Tso Moran, western Himalaya JF - Lithos : an international journal of mineralogy, petrology, and geochemistry N2 - Ultrahigh-pressure (UHP), coesite-bearing edogites in the Himalaya have been documented from the Kaghan Valley in Pakistan and the Tso Morani area in northwest India. These complexes are part of the northern edge of the Indian plate that has been subducted to, and metamorphosed at, mantle depths of more than 100 km before being exhumed. Both UHP complexes are located today directly adjacent to the Indus-Tsangpo suture zone and are not separated by non-metamorphosed sequences of Tethyan sediments from the Asian margin. Herein, we present new data for one fresh coesite-bearing eclogite from the Tso Moran massif. Therein, garnets are zoned reflecting their growth during prograde and peak metamorphism and showing a thin retrograde overgrowth. Inclusions can be directly correlated to the compositional zoning and are seen as either relicts of the protolith mineral paragenesis and as "snap shots" of the mineral paragenesis during subduction and under peak conditions. Rare earth element concentrations (REE) were obtained for garnet, mineral inclusions in garnet and matrix minerals. The REE pattern in garnet reflects a sequential change in matrix minerals and their proportions due to net transfer reactions during subduction and peak metamorphism. Using conventional geothermobarometry, a peak pressure of ca. 44-48 kbar at 560-760 degrees C followed by an S-shaped exhumation curve has been deduced. Gibbs free energy minimization modelling was used to supplement our analytical findings. (C) 2015 Elsevier B.V. All rights reserved. KW - Tso Morari KW - Coesite-bearing eclogite KW - Ultra-high pressure (UHP) KW - Rare earth element (REE) distribution KW - Laser ICP-MS Y1 - 2015 U6 - https://doi.org/10.1016/j.lithos2015.06.007 SN - 0024-4937 SN - 1872-6143 VL - 231 SP - 77 EP - 91 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Wiggering, Hubert A1 - Steinhardt, Uta T1 - A conceptual model for site-specific agricultural land-use JF - Ecological modelling : international journal on ecological modelling and engineering and systems ecolog N2 - Land-use concepts provide decision support for the most efficient usage options according to sustainable development and multifunctionality requirements. However, developments in landscape-related, agricultural production schemes are primarily driven by economic benefits. Therefore, most agricultural land-use concepts tackle particular problems or interests and lack a systemic perspective. As a result, we discuss a conceptual model for future site-specific agricultural land-use with an inbuilt requirement for adequate experimental sites to enable monitoring systems for a new generation of ecosystem models and for new approaches to address science-stakeholder interactions. KW - Site-specific agricultural land-use KW - Concept of differentiated land use KW - Sustainable land use KW - Multifunctionality KW - Modeling tools for decision-making Y1 - 2015 U6 - https://doi.org/10.1016/j.ecolmodel.2014.08.011 SN - 0304-3800 SN - 1872-7026 VL - 295 SP - 42 EP - 46 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Wiesner, Melanie A1 - Barknowitz, Gitte A1 - Florian, Simone A1 - Haack, Michael A1 - Lehmann, Carsten A1 - Lippmann, Doris A1 - Mewis, Inga A1 - Schumacher, Fabian A1 - Brigelius-Flohé, Regina A1 - Schreiner, Monika A1 - Glatt, Hansruedi T1 - Pak Choi Fed to Mice: Formation of DNA Adducts and Influence on Xenobiotic-Metabolizing Enzymes T2 - NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY Y1 - 2015 SN - 0028-1298 SN - 1432-1912 VL - 388 SP - S68 EP - S68 PB - Springer CY - New York ER - TY - JOUR A1 - Wiesmeier, Martin A1 - Munro, Sam A1 - Barthold, Frauke Katrin A1 - Steffens, Markus A1 - Schad, Peter A1 - Kögel-Knabner, Ingrid T1 - Carbon storage capacity of semi-arid grassland soils and sequestration potentials in northern China JF - Global change biology N2 - Organic carbon (OC) sequestration in degraded semi-arid environments by improved soil management is assumed to contribute substantially to climate change mitigation. However, information about the soil organic carbon (SOC) sequestration potential in steppe soils and their current saturation status remains unknown. In this study, we estimated the OC storage capacity of semi-arid grassland soils on the basis of remote, natural steppe fragments in northern China. Based on the maximum OC saturation of silt and clay particles <20m, OC sequestration potentials of degraded steppe soils (grazing land, arable land, eroded areas) were estimated. The analysis of natural grassland soils revealed a strong linear regression between the proportion of the fine fraction and its OC content, confirming the importance of silt and clay particles for OC stabilization in steppe soils. This relationship was similar to derived regressions in temperate and tropical soils but on a lower level, probably due to a lower C input and different clay mineralogy. In relation to the estimated OC storage capacity, degraded steppe soils showed a high OC saturation of 78-85% despite massive SOC losses due to unsustainable land use. As a result, the potential of degraded grassland soils to sequester additional OC was generally low. This can be related to a relatively high contribution of labile SOC, which is preferentially lost in the course of soil degradation. Moreover, wind erosion leads to substantial loss of silt and clay particles and consequently results in a direct loss of the ability to stabilize additional OC. Our findings indicate that the SOC loss in semi-arid environments induced by intensive land use is largely irreversible. Observed SOC increases after improved land management mainly result in an accumulation of labile SOC prone to land use/climate changes and therefore cannot be regarded as contribution to long-term OC sequestration. KW - climate change KW - fine fraction KW - soil organic carbon KW - soil texture KW - steppe soils Y1 - 2015 U6 - https://doi.org/10.1111/gcb.12957 SN - 1354-1013 SN - 1365-2486 VL - 21 IS - 10 SP - 3836 EP - 3845 PB - Wiley-Blackwell CY - Hoboken ER - TY - JOUR A1 - Wiese, Stefanie A1 - Esatbeyoglu, Tuba A1 - Winterhalter, Peter A1 - Kruse, Hans-Peter A1 - Winkler, Stephanie A1 - Bub, Achim A1 - Kulling, Sabine E. T1 - Comparative biokinetics and metabolism of pure monomeric, dimeric, and polymeric flavan-3-ols: A randomized cross-over study in humans JF - Molecular nutrition & food research : bioactivity, chemistry, immunology, microbiology, safety, technology N2 - Scope: Flavan-3-ols are abundant polyphenols in human nutrition and are associated with beneficial health effects. The aim of this study was to comparatively investigate the metabolic fate of (-)-epicatechin, procyanidin B1, and polymeric procyanidins in a randomized cross-over study in humans. Methods and results: Parent compounds, conjugates, and microbial metabolites were determined in plasma, urine, and faeces by HPLC-MS and GC-MS/MS. Glucuronidated, sulfated, and methylated (-)-epicatechin and 5-(3',4'-dihydroxyphenyl)-valerolactone were the dominant metabolites in blood and urine. In addition, minor amounts of procyanidin B1 and 4-hydroxy-5-(3',4'-dihydroxyphenyl) valeric acid and their conjugated metabolites were detected. The formation of 5-(3',4'-dihydroxyphenyl)-valerolactone and 4-hydroxy-5-(3',4'-dihydroxyphenyl) valeric acid varied largely between individuals as well as with the degree of polymerization of flavan-3-ols. Monomer units were not detectable in plasma or urine after procyanidin B1 and polymeric procyanidin intake. No correlation was found between the intake of flavan-3-ols and the occurrence of phenolic acids in blood and urine or the phenolic compound profiles in faeces. Conclusion: In addition to conjugated metabolites derived from the absorption of monomeric flavan-3-ols, 5-(3',4' -dihydroxyphenyl)-valerolactone represents an important in vivo metabolite of (-)-epicatechin and procyanidin B1 produced by the gut microbiota. KW - Bioavailability KW - Catechins KW - Drug metabolism KW - Microbial degradation KW - Procyanidins Y1 - 2015 U6 - https://doi.org/10.1002/mnfr.201400422 SN - 1613-4125 SN - 1613-4133 VL - 59 IS - 4 SP - 610 EP - 621 PB - Wiley-Blackwell CY - Hoboken ER -