cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
EBIO Does Not Induce Cardiomyogenesis in Human Pluripotent Stem Cells but Modulates Cardiac Subtype Enrichment by Lineage-Selective Survival
Creators: name: Jara-Avaca, Monica
name: Kempf, Henning
name: Rückert, Michael
name: Robles-Diaz, Diana
name: Franke, Annika
name: De La Roche, Jeanne
name: Fischer, Martin
name: Malan, Daniela
name: Sasse, Philipp
name: Solodenko, Wladimir
name: Dräger, Gerald
name: Kirschning, Andreas
name: Martin, Ulrich
name: Zweigerdt, Robert
Publisher: name: New York, NY : Springer
Year: 2017
Subjects: subject: 1-ethyl-2-benzimidazolinone (EBIO)
subject: cardiomyocyte enrichment
subject: cardiomyocyte subtype
subject: CyPPA
subject: differentiation
subject: human pluripotent stem cells
subject: NS309
subject: proliferation
subject: SK channel
subject: 1 ethyl 2 benzimidazolinone
subject: action potential
subject: animal cell
subject: Article
subject: cardiac muscle cell
subject: cardiac stem cell
subject: cardiomyogenesis
subject: cell differentiation
subject: cell lineage
subject: cell loss
subject: cell proliferation
subject: cell survival
subject: cell viability
subject: comparative study
subject: concentration response
subject: controlled study
subject: embryoid body
subject: heart development
subject: human
subject: human cell
subject: mouse
subject: nonhuman
subject: pluripotent stem cell
subject: priority journal
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Subtype-specific human cardiomyocytes (CMs) are valuable for basic and applied research. Induction of cardiomyogenesis and enrichment of nodal-like CMs was described for mouse pluripotent stem cells (mPSCs) in response to 1-ethyl-2-benzimidazolinone (EBIO), a chemical modulator of small-/intermediate-conductance Ca2+-activated potassium channels (SKs 1–4). Investigating EBIO in human pluripotent stem cells (PSCs), we have applied three independent differentiation protocols of low to high cardiomyogenic efficiency. Equivalent to mPSCs, timed EBIO supplementation during hPSC differentiation resulted in dose-dependent enrichment of up to 80% CMs, including an increase in nodal- and atrial-like phenotypes. However, our study revealed extensive EBIO-triggered cell loss favoring cardiac progenitor preservation and, subsequently, CMs with shortened action potentials. Proliferative cells were generally more sensitive to EBIO, presumably via an SK-independent mechanism. Together, EBIO did not promote cardiogenic differentiation of PSCs, opposing previous findings, but triggered lineage-selective survival at a cardiac progenitor stage, which we propose as a pharmacological strategy to modulate CM subtype composition.
Mobility Models for Vehicular Ad-hoc Network Simulation
Creators: name: Khairnar, Vaishali D.
name: Pradhan, S. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: One of the emerging applications that belong to ambient systems is to transparently and directly interconnect vehicles on roads, making an ad hoc network that enables a variety of applications through distributed software without the need of any fixed and dedicated infrastructure. The network as well as the embedded computers and sensors in the vehicle will be invisible to the driver, who will get the required services during his journey. New type of ad hoc network is the Vehicular Ad hoc Network, in which vehicles constitute the mobile nodes in the network. Due to the prohibitive cost of deploying and implementing such as system in a real world, most research work in VANET relies on simulations for evaluation purpose. The key concept for VANET simulations is a real world vehicular mobility model which will ensures conclusions drawn from simulation experiments will carry through to real world deployments. In this paper we present a tool SUMO, MOVE that allows users to easily generate real world mobility models for VANET simulations. MOVE tool is built on top of SUMO which is open source micro traffic simulator. Output of MOVE is a real world mobility model and can used by NS-2 and Qual-net simulator. In this paper we evaluate and compare ad hoc routing performance for vehicular nodes using MOVE, which is using random way point model. The simulation results are obtained when nodes are moving according to a real world mobility model which is significantly different from that of the generally used random way point model.
description: 5 pages, 12 figures, International Journal of Computer Applications
Anchusa arvensis Schlechtendal
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: G. Tetrahit L. Cat. 291; 458 (auctore Briquet). Bis 2610m: Hütten der Fluhalp ob Zermatt, zahlreich und blühend (Becherer 1950). Eine andere hohe Stelle, ebenfalls bei Zermatt, ist:beim Trifthotel, 2310m (Braun-Blanquet1919). Var. arvensis Schlechtendal - l: Vionnaz (J-); Salvan (J.); Outre-Rhone (Gams). Var. silvestris Schlechtendal - l: Salvan (J.). Var. praecox (Jordan) Rapin - l: Salvan (J.); Alpen von Outre-Rhone (Gams). - 2:Kii - 3: Val de Nendaz (J.); Törbel (Stehler). Var.Verloti (Jordan) Briq.- l: Tanay(J.).- 3:Ayer (P.);Täsch(Wilczek).- 4:Binntal,mehrfach (Binz). Var.Reichenbachii (Reuter) Briq. - l: Plex ob Collonges (Gams); Haut d'Arbignon (idem).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Evaluating commercial moisture probes in reference solutions covering mineral to peat soil conditions
Creators: name: Dettmann, Ullrich
name: Bechtold, Michel
Publisher: name: Washington, DC : Soil Science Society of America
Year: 2018
Subjects: subject: Calibration
subject: Electric conductivity
subject: Manufacture
subject: Permittivity
subject: Porous materials
subject: Soil moisture
subject: Dielectric permittivities
subject: Electrical conductivity
subject: Measurement concepts
subject: Measurements of
subject: Reference solution
subject: Soil water content
subject: Time domain reflectometry probes
subject: Volumetric water content
subject: Probes
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Capacitance and time domain reflectometry (TDR) probes are frequently used for measurements of the volumetric soil water content. The measurement concept is based on the correlation between volumetric water content and dielectric permittivity (ε). While considerable effort has been made to accurately measure ε in the typical range of mineral soils (<40), little attention has been paid to the capability of moisture probes to measure high ε (>40), typical for highly porous media like organic soils. We evaluated the capability of two moisture probe types (TRIME-PICO 64 and GS3) to measure ε across the range from 1 to 80. In the case of the TRIME probes, different equations to calculate ε from transit times were tested. Measuring in a set of reference solutions, the TRIME probes had an RMSE of 18.73 for ε values derived using the manufacturer’s calibration. With a new calibration, the RMSE was decreased to 3.55. The GS3 probes had an RMSE of 3.96. For both probes, uncertainties increased with increasing e. We also tested the performance for different electrical conductivities of the reference solutions. Accuracy of ε values was unaffected by increasing conductivities for the TRIME probes but decreased for the GS3 probes. The GS3 probes, however, were able to determine electric conductivities accurately, while TRIME probes failed for electrical conductivity although indicated differently by the manufacturer. © Soil Science Society of America.
Natural colloid mobilization and leaching in wettable and water repellent soil under saturated condition
Creators: name: Sepehrnia, Nasrollah
name: Fishkis, Olga
name: Huwe, Bernd
name: Bachmann, Jörg
Publisher: name: Berlin : De Gruyter
Year: 2018
Subjects: subject: C18
subject: Hydrophobic colloids
subject: Repellency index
subject: Sessile drop
subject: Soil water repellency
subject: Biogeochemistry
subject: Biological materials
subject: Colloids
subject: Drops
subject: Groundwater
subject: Groundwater pollution
subject: Hydrophilicity
subject: Hydrophobicity
subject: Leaching
subject: Organic compounds
subject: Soil moisture
subject: Waterproofing
subject: Wetting
subject: Environmental science
subject: Hydrophobic character
subject: Organic matter content
subject: Saturated conditions
subject: Sessile drops
subject: Water repellent soils
subject: Effluents
subject: carbon isotope
subject: colloid
subject: experimental study
subject: hydrophobicity
subject: leaching
subject: mobilization
subject: saturation
subject: soil organic matter
subject: soil water
subject: subsoil
subject: wettability
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The coupled transport of pollutants that are adsorbed to colloidal particles has always been a major topic for environmental sciences due to many unfavorable effects on soils and groundwater. This laboratory column study was conducted under saturated moisture conditions to compare the hydrophobic character of the suspended and mobilized colloids in the percolates released from a wettable subsoil and a water repellent topsoil. Both soils with different organic matter content were analyzed for wettability changes before and after leaching using sessile drop contact angles as well as water and ethanol sorptivity curves, summarized as repellency index. Hydrophobicity of the effluent suspensions was assessed using the C18 adsorption method. Water repellency level of the repellent soil decreased after leaching but remained on a lower level of water repellency, while, the wettable soil remained wettable. The leached colloids from the repellent soil were predominantly hydrophilic and the percentage of the hydrophobic colloid fraction in the effluent did not systematically changed with time. Total colloid release depended on soil carbon stock but not on soil wettability. Our results suggest that due to the respective character of transported colloids a similar co-transport mechanism for pollutants may occur which does not depend explicitly on soil wettability of the releasing horizon, but could be more affected by total SOM content. Further studies with a wider range of soils are necessary to determine if the dominant hydrophilic character of leached colloids is typical. Due to the mostly hydrophilic colloid character we conclude also that changes in wettability status, i.e. of wettable subsoil horizons due to the leachate, may not necessarily occur very fast, even when the overlaying topsoil is a repellent soil horizon with a high organic matter content.
Influence of Reciprocal links in Social Networks
Creators: name: Zhu, Yu-Xiao
name: Zhang, Xiao-Guang
name: Sun, Gui-Quan
name: Tang, Ming
name: Zhou, Tao
name: Zhang, Zi-Ke
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this Letter, we empirically study the influence of reciprocal links, in order to understand its role in affecting the structure and function of directed social networks. Experimental results on two representative datesets, Sina Weibo and Douban, demonstrate that the reciprocal links indeed play a more important role than non-reciprocal ones in both spreading information and maintaining the network robustness. In particular, the information spreading process can be significantly enhanced by considering the reciprocal effect. In addition, reciprocal links are largely responsible for the connectivity and efficiency of directed networks. This work may shed some light on the in-depth understanding and application of the reciprocal effect in directed online social networks.
Membrane chaperoning by members of the PspA/IM30 protein family.
Creators: name: Thurotte, Adrien
name: Brüser, Thomas
name: Mascher, Thorsten
name: Schneider, Dirk
Publisher: name: London : Informa UK Limited
Year: 2017
Subjects: subject: Monomer
subject: Protein family
subject: Oligomer
subject: Membrane structure
subject: Membrane
subject: Biochemistry
subject: Biology
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: PspA, IM30 (Vipp1) and LiaH, which all belong to the PspA/IM30 protein family, form high molecular weight oligomeric structures. For all proteins membrane binding and protection of the membrane structure and integrity has been shown or postulated. Here we discuss the possible membrane chaperoning activity of PspA, IM30 and LiaH and propose that larger oligomeric structures bind to stressed membrane regions, followed by oligomer disassembly and membrane stabilization by protein monomers or smaller/different oligomeric scaffolds.
title: West Coast Fishing Communities Socio-Economic Data Model: technical documentation and guidelines for use
titleType: Other
Creators: name: Mamula, Aaron
name: Kohler, Camille
name: Kosaka, Rosemary
name: Varney, Anna
name: Norman, Karma C.
Publisher: name: United States. National Marine Fisheries Service, Southwest Fisheries Science Center (U.S.)
Year: 2019

description: NOAA technical memorandum NMFS-SWFSC ; 621
Comprehensive Constraints on a Spin-3/2 Singlet Particle as a Dark Matter Candidate
Creators: name: Ding, Ran
name: Liao, Yi
name: Liu, Ji-Yuan
name: Wang, Kai
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the proposal that dark matter (DM) is composed of a spin-3/2 particle that is a singlet of the standard model (SM). Its leading effective interactions with ordinary matter involve a pair of their fields and a pair of SM fermions, in the form of products of chiral currents. We make a comprehensive analysis on possible phenomenological effects of the interactions in various experiments and observations. These include collider searches for monojet plus missing transverse energy events, direct detections of DM scattering off nuclei, possible impacts on the gamma rays and antiproton-to-proton flux ratio in cosmic rays, and the observed relic density. The current data already set strong constraints on the effective interactions in a complementary manner. The constraint from collider searches is most effective at a relatively low mass of DM, and the antiproton-to-proton flux ratio offers the best bound for a heavy DM, while the spin-independent direct detection is the best in between. For DM mass of order 10 GeV to 1 TeV, the effective interaction scale is constrained to be typically above a few tens TeV.
description: 24 pages, 10 figures
DEMO: Simulation of Realistic Mobility Model and Implementation of 802.11p (DSRC) for Vehicular Networks (VANET)
Creators: name: Patil, Saurabh D.
name: Thombare, D. V.
name: Khairnar, Vaishali D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: An ad hoc network of vehicles (VANET) consists of vehicles that exchange information via radio in order to improve road safety, traffic management and do better distribution of traffic load in time and space. Along with this it allows Internet access for passengers and users of vehicles. A significant characteristic while studying VANETs is the requirement of having a mobility model that gives aspects of real vehicular traffic. These scenarios play an important role in performance of VANETs. In our paper we have demonstration and description of generating realistic mobility model using various tools such as eWorld, OpenStreetMap, SUMO and TraNS. Generated mobility scenario is added to NS-2.34 (Network Simulator) for analysis of DSR and AODV routing protocol under 802.11p (DSRC/WAVE) and 802.11a. Results after analysis shows 802.11p is more suitable than 802.11a for VANET.
description: 4 pages, 6 figures, International Journal of Computer Application
A Kine-Chemical Investigation of the AB Dor Moving Group "Stream"
Creators: name: Barenfeld, Scott A.
name: Bubar, Eric J.
name: Mamajek, Eric E.
name: Young, Patrick A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The AB Dor Moving Group consists of a "nucleus" of ~10 stars at d ~ 20 pc, along with dozens of purported "stream" members distributed across the sky. We perform a chemical and kinematic analysis of a subsample of AB Dor stream stars to test whether they constitute a physical stellar group. We use the NEMO Galactic kinematic code to investigate the orbits of the stream members, and perform a chemical abundance analysis using high resolution spectra taken with the Magellan Clay 6.5-m telescope. Using a chi^2 test with the measured abundances for 10 different elements, we find that only half of the purported AB Dor stream members could possibly constitute a statistically chemically homogeneous sample. Some stream members with 3D velocities were hundreds of parsecs from the AB Dor nucleus ~10^8 yr ago, and hence were unlikely to share a common origin. We conclude that the published lists of AB Dor moving group stream members are unlikely to represent the dispersed remnant of a single star formation episode. A subsample of the stream stars appears to be both statistically chemically homogeneous and in the vicinity of the AB Dor nucleus at birth. Their mean metallicity is [Fe/H] = 0.02 +/- 0.02 dex, which we consider representative for the AB Dor group. Finally, we report a strong lower limit on the age of the AB Dor nucleus of >110 Myr based on the pre-MS contraction times for K-type members which have reached the main sequence.
description: 20 pages, 3 figures, accepted for publication in ApJ
Genomic and transcriptomic resources for marker development in synchytrium endobioticum, an elusive but severe potato pathogen
Creators: name: Busse, Friedricke
name: Bartkiewicz, Annette
name: Terefe-Ayana, Diro
name: Niepold, Frank
name: Schleusner, Yvonne
name: Flath, Kerstin
name: Sommerfeldt-Impe, Nicole
name: Lübeck, Jens
name: Strahwald, Josef
name: Tacke, Eckhard
name: Hofferbert, Hans-Reinhard
name: Linde, Marcus
name: Przetakiewicz, Jaroslaw
name: Debener, Thomas
Publisher: name: St. Paul, MN : American Phytopathological Society
Year: 2017
Subjects: subject: Synchytrium endobioticum
subject: potato
subject: Chytridiomycetes
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Synchytrium endobioticum is an obligate biotrophic fungus that causes wart diseases in potato. Like other species of the class Chytridiomycetes, it does not form mycelia and its zoospores are small, approximately 3 μm in diameter, which complicates the detection of early stages of infection. Furthermore, potato wart disease is difficult to control because belowground organs are infected and resting spores of the fungus are extremely durable. Thus, S. endobioticum is classified as a quarantine organism. More than 40 S. endobioticum pathotypes have been reported, of which pathotypes 1(D1), 2(G1), 6(O1), 8(F1), and 18(T1) are the most important in Germany. No molecular methods for the differentiation of pathotypes are available to date. In this work, we sequenced both genomic DNA and cDNA of the German pathotype 18(T1) from infected potato tissue and generated 5,422 expressed sequence tags (EST) and 423 genomic contigs. Comparative sequencing of 33 genes, single-stranded confirmation polymorphism (SSCP) analysis with polymerase chain reaction fragments of 27 additional genes, as well as the analysis of 41 simple sequence repeat (SSR) loci revealed extremely low levels of variation among five German pathotypes. From these markers, one sequence-characterized amplified region marker and five SSR markers revealed polymorphisms among the German pathotypes and an extended set of 11 additional European isolates. Pathotypes 8(F1) and 18(T1) displayed discrete polymorphisms which allow their differentiation from other pathotypes. Overall, using the information of the six markers, the 16 isolates could be differentiated into three distinct genotype groups. In addition to the presented markers, the new collection of EST from genus Synchytrium might serve in the future for molecular taxonomic studies as well as for analyses of the host-pathogen interactions in this difficult pathosystem. © 2017 The American Phytopathological Society.
Philosophical elements in Thomas Kuhn's historiography of science
Creators: name: Hoyningen-Huene, P.
Publisher: name: Donostia-San Sebastian : Universidad del Pais Vasco
Year: 2012
Subjects: subject: Anti-Whiggism
subject: Historical realism
subject: Historical relevance
subject: Internalism
subject: Rationality of science
subject: Dewey Decimal Classification::100 | Philosophie

description: To begin, the so-called 'selectivity of historical judgment' is discussed. According to it, writing history requires a comparative criterion of historical relevance. This criterion contains philosophical elements. In Kuhn's case, the criterion directs historical research and presentation away from Whiggish historiography by postulating a hermeneutic reading of historical sources. This postulate implies some sort of internalism, some sort of rationality of scientific development, and historical realism. To conclude, some consequences of Kuhn's anti-Whiggism are discussed.
Soil organic matter dynamics in the Siberian Kulunda steppe
Creators: name: Bischoff, Norbert Eberhard Stefan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Soil organic matter
subject: soil microbial community
subject: land-use change
subject: climate
subject: steppe soil
subject: salt-affected soil
subject: Organische Bodensubstanz
subject: mikrobielle Bodengemeinschaft
subject: Landnutzungswechsel
subject: Klima
subject: Steppenboden
subject: salzbeeinflusste Böden
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Higher order corrections to the Grimus-Stockinger formula
Creators: name: Korenblit, S. E.
name: Taychenachev, D. V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For the Grimus-Stockinger formula the same dimensionless parameter of asymptotic expansion is found by several ways of calculations. This parameter strongly depends on the width of wave packet.
description: 8 pages
title: Historic Trading Routes in Kosovo and Albania and their Potential in Improving Rural Tourism through Cross National Approaches
Creators: name: Kryeziu, Arnisa
name: Klein, Caroline Jaeger
Publisher: name: University of Massachusetts Amherst
Year: 2019

description: Trading routes have been aligning different parts of the world since prehistoric times, transporting scarce commodities from one area to another. Primarily, the majority of these routes had military character used during wars in enlarging territories but with the flourishing of trade in agriculture, craftsmanship, and mining, they gained important economic value. Parallel to this exchange of goods, these communication systems expedited influences and cultural exchange in cuisine, traditions, religion, crafts, arts and architecture.

Main centers of present day Kosovo and Albania were part of this dense communication network for trading activities, for example Via Egnatia, Via de Zenta and more. Historical infrastructure that remains today such as bridges, khans (inns), bazaars, road defense towers and remnants of road pavements are testimonials of this worldwide trading interchange. Such structures were a monetary investment of powerful guilds, carefully created from widely renowned local masons and stone cutters with an intuitive awareness in creating complementary harmony between the nature and tectonics of structures, now deeply embedded in the rural and urban tissue.

This article identifies these forgotten cultural and trading structures as potential tourism accelerators in rural and urban communities, especially in remote regions far from the main centers of tourism attractions. As these structures were part of a large trading constellation, they cannot be interpreted, neither understood as singular structures, therefore revival strategies should be based on holistic, cross-national tourism strategies and recognition. One strategic methodology can easily link different sites into singular or several cross-national themed heritage trails with combined transportation and manifestations through land and sea. These can create alternatives for community-based rural tourism as a part of a wider tourism circuit, returning the economic prosperity these routes brought.
Optimal Tc for Electron-Doped Cuprate Realized under High Pressure
Creators: name: Ishiwata, Shintaro
name: Kotajima, Daichi
name: Takeshita, Nao
name: Terakura, Chieko
name: Seki, Shinichiro
name: Tokura, Yoshinori
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The race to obtain a higher critical temperature (Tc) in the superconducting cuprates has been virtually suspended since it was optimized under high pressure in a hole-doped trilayer cuprate. We report the anomalous increase in Tc under high pressure for the electron-doped infinite-layer cuprate Sr0.9La0.1CuO2 in the vicinity of the antiferromagnetic critical point. By the application of a pressure of 15 GPa, Tc increases to 45 K, which is the highest temperature among the electron-doped cuprates and ensures unconventional superconductivity. We describe the electronic phase diagram of Sr1-xLaxCuO2 to discuss the relation between the antiferromagnetic order and superconductivity.
description: 9 pages, 4 figures
Control and manipulation of electromagentically induced transparency in a nonlinear optomechanical system with two movable mirrors
Creators: name: Shahidani, S.
name: Naderi, M. H.
name: Soltanolkotabi, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider an optomechanical cavity made by two moving mirrors which contains a Kerr-down conversion nonlinear crystal. We show that the coherent oscillations of the two mechanical oscil- lators can lead to splitting in the electromagnetically induced transparency (EIT) resonance, and appearance of an absorption peak within the transparency window. In this configuration the coher- ent induced splitting of EIT is similar to driving a hyperfine transition in an atomic Lambda-type three-level system by a radio-frequency or microwave field. Also, we show that the presence of non- linearity provides an additional flexibility for adjusting the width of the transparency windows. The combination of an additional mechanical mode and the nonlinear crystal suggests new possibilities for adjusting the resonance frequency, the width and the spectral positions of the EIT windows as well as the enhancement of the absorption peak within the transparency window.
title: Le paysage rural patrimonial et la lutte contre le réchauffement climatique (Rural Heritage Landscapes and the fight against global warming)
Creators: name: Cornu, Claire
name: Ambroise, Regis
name: Giorgis, Sebastien
Publisher: name: University of Massachusetts Amherst
Year: 2019

description: Trois niveaux d’analyse sont mobilisés pour concevoir tout projet contemporain fondé sur les caractéristiques paysagères d’un territoire, sur ses valeurs et sur ses enjeux culturels et sociaux. La démarche de projet s’appuie sur la définition proposée par la Convention européenne du paysage : «partie de territoire telle que perçue par les populations ». Autrement dit la dimension physique du paysage, sa morphologie particulière héritée de la géographie et de l’histoire sont présentes autant que la dimension sensible, celle du sens de la vue, la part dite « subjective » (liée aux « sujets », dans leur diversité).

De nouvelles façons de produire sans pétrole s’inventent en s’inspirant des bonnes pratiques identifiées dans les systèmes traditionnels de paysages. Elles aident les populations à s’engager vers un développement durable et harmonieux correspondant aux singularités de leur territoire. Concernant les enjeux du réchauffement climatique, l’étude des territoires de terrasses démontre qu’il convient de porter attention autant à la préservation ou à l’évolution des techniques qu’aux formes d’organisation sociale à l’origine de ce patrimoine.

La maçonnerie en pierre sèche, son agriculture en terrasse, son élevage en enclos, ses cabanes des champs, ses espaces d’accompagnement des jardins, des maisons, des villages, des rivières, des chemins, des routes, sont autant d’ouvrages subtils pour apprivoiser la pente, gérer le ruissellement collinaire, générer un microclimat propice aux cultures et constituer un écosystème pour la biodiversité. Ils sont des solutions alternatives modernes. Notre attachement à nos racines revendique le maintien de ces paysages uniques, de cet art paysan et de cette pratique durable, non délocalisable, non industrialisable, qui repositionne l’homme au cœur du processus.
Spatial crop and soil landscape processes under special consideration of relief information in a loess landscape
Creators: name: Reuter, Hannes Isaak
Publisher: name: Hannover : Universität
Year: 2004
Subjects: subject: Relief analysis
subject: landform classification
subject: soil properties
subject: grain yield
subject: spatial
subject: temporal
subject: variability
subject: solar radiation
subject: topographic shading
subject: modelling
subject: geostatistics
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]
Acoustic emission from magnetic flux tubes in the solar network
Creators: name: Vigeesh, G.
name: Hasan, S. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of three-dimensional numerical simulations to investigate the excitation of waves in the magnetic network of the Sun due to footpoint motions of a magnetic flux tube. We consider motions that typically mimic granular buffeting and vortex flows and implement them as driving motions at the base of the flux tube. The driving motions generates various MHD modes within the flux tube and acoustic waves in the ambient medium. The response of the upper atmosphere to the underlying photospheric motion and the role of the flux tube in channeling the waves is investigated. We compute the acoustic energy flux in the various wave modes across different boundary layers defined by the plasma and magnetic field parameters and examine the observational implications for chromospheric and coronal heating.
description: To appear in Journal of Physics: Conference Series, proceedings of "Eclipse on the Coral Sea: Cycle 24 Ascending", Palm Cove, 2012. 7 pages, 4 figures
Constraints on neutrino masses from Planck and Galaxy Clustering data
Creators: name: Giusarma, Elena
name: de Putter, Roland
name: Ho, Shirley
name: Mena, Olga
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present here bounds on neutrino masses from the combination of recent Planck Cosmic Microwave Background measurements and galaxy clustering information from the Baryon Oscillation Spectroscopic Survey (BOSS), part of the Sloan Digital Sky Survey-III. We use the full shape of either the photometric angular clustering (Data Release 8) or the 3D spectroscopic clustering (Data Release 9) power spectrum in different cosmological scenarios. In the Lambda$CDM scenario, spectroscopic galaxy clustering measurements improve significantly the existing neutrino mass bounds from Planck data. We find sum m_nu< 0.39 eV at 95% confidence level for the combination of the 3D power spectrum with Planck CMB data (with lensing included) and Wilkinson Microwave Anisoptropy Probe 9-year polarization measurements. Therefore, robust neutrino mass constraints can be obtained without the addition of the prior on the Hubble constant from HST. In extended cosmological scenarios with a dark energy fluid or with non flat geometries, galaxy clustering measurements are essential to pin down the neutrino mass bounds, providing in the majority of cases better results than those obtained from the associated measurement of the Baryon Acoustic Oscillation scale only. In the presence of a freely varying (constant) dark energy equation of state, we find sum m_nu<0.49 eV at 95% confidence level for the combination of the 3D power spectrum with Planck CMB data (with lensing included) and Wilkinson Microwave Anisoptropy Probe 9-year polarization measurements. This same data combination in non flat geometries provides the neutrino mass bound sum m_nu<0.35 eV at 95% confidence level.
description: 9 pages and 2 figures
Solvent isotope effect (D2O) in photocatalytic systems
Creators: name: Belhadj, Hamza
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Titanium dioxide
subject: adsorption
subject: D2O
subject: photocatalytic reaction
subject: isotopic-exchange
subject: acetate
subject: formaldehyde
subject: hydrogen production
subject: mechanistic study
subject: Titandioxid
subject: photokatalytische Reaktion
subject: Isotopen-Austauschreaktion
subject: Formaldehyd
subject: Wasserstoffproduktion
subject: mechanistische Studien
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
Global existence and exponential growth for a viscoelastic wave equation with dynamic boundary conditions
Creators: name: Gerbi, Stéphane
name: Said-Houari, Belkacem
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The goal of this work is to study a model of the wave equation with dynamic boundary conditions and a viscoelastic term. First, applying the Faedo-Galerkin method combined with the fixed point theorem, we show the existence and uniqueness of a local in time solution. Second, we show that under some restrictions on the initial data, the solution continues to exist globally in time. On the other hand, if the interior source dominates the boundary damping, then the solution is unbounded and grows as an exponential function. In addition, in the absence of the strong damping, then the solution ceases to exist and blows up in finite time.
description: arXiv admin note: text overlap with arXiv:0810.1013
Diffusion Effects in Gradient Echo Memory
Creators: name: Luo, X. -W.
name: Hope, J. J.
name: Hillman, B.
name: Stace, T. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the effects of diffusion on a $Λ$-gradient echo memory, which is a coherent optical quantum memory using thermal gases. The efficiency of this memory is high for short storage time, but decreases exponentially due to decoherence as the storage time is increased. We study the effects of both longitudinal and transverse diffusion in this memory system, and give both analytical and numerical results that are in good agreement. Our results show that diffusion has a significant effect on the efficiency. Further, we suggest ways to reduce these effects to improve storage efficiency.
description: 11 pages, 9 figures
Exciton-related electroluminescence from monolayer MoS2
Creators: name: Ye, Yu
name: Ye, Ziliang
name: Gharghi, Majid
name: Zhu, Hanyu
name: Zhao, Mervin
name: Yin, Xiaobo
name: Zhang, Xiang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Excitons in MoS2 dominate the absorption and emission properties of the two-dimensional system. Here, we study the microscopic origin of the electroluminescence from monolayer MoS2 fabricated on a heavily p-type doped silicon substrate. By comparing the photoluminescence and electroluminescence of a MoS2 diode, direct-exciton and bound-exciton related recombination processes can be identified. Auger recombination of the exciton-exciton annihilation of bound exciton emission is observed under a high electron-hole pair injection rate at room temperature. We expect the direct exciton-exciton annihilation lifetime to exceed the carrier lifetime, due to the absence of any noticeable direct exciton saturation. We believe that our method of electrical injection opens a new route to understand the microscopic nature of the exciton recombination and facilitate the control of valley and spin excitation in MoS2.
description: 12 pages, 3 figures
Metric approach for sound propagation in nematic liquid crystals
Creators: name: Pereira, E.
name: Fumeron, S.
name: Moraes, F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the eikonal approach, we describe sound propagation near to topological defects of nematic liquid crystal as geodesics of a non-euclidian manifold endowed with an effective metric tensor. The relation between the acoustics of the medium and this geometrical description is given by Fermat's principle. We calculate the ray trajectories and propose a diffraction experiment to retrieve informations about the elastic constants.
description: 6 pages, 4 figures, accepted in Physical Review E
Galileon Radiation from Binary Systems
Creators: name: de Rham, Claudia
name: Matas, Andrew
name: Tolley, Andrew J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the power emitted in scalar modes for a binary systems, including binary pulsars, with a conformal coupling to the most general Galileon effective field theory by considering perturbations around a static, spherical background. While this method is effective for calculating the power in the cubic Galileon case, here we find that if the quartic or quintic Galileon dominate, for realistic pulsar systems the classical perturbative expansion about spherically symmetric backgrounds breaks down (although the quantum effective theory is well-defined). The basic reason is that the equations of motion for the fluctuations are then effectively one dimensional. This leads to many multipoles radiating with equal strength, as opposed to the normal Minkowski spacetime and cubic Galileon cases, where increasing multipoles are suppressed by increasing powers of the orbital velocity. We consider two cases where perturbation theory gives trust-worthy results: (1) when there is a large hierarchy between the masses of two orbiting objects, and (2) when we choose scales such that the quartic Galileon only begins to dominate at distances smaller than the inverse pulsar frequency. Implications for future calculations with the full Galileon that account for the Vainshtein mechanism are considered.
description: 33 pages
Massive gravity, the elasticity of space-time and perturbations in the dark sector
Creators: name: Battye, Richard A.
name: Pearson, Jonathan A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a class of modified gravity models where the terms added to the standard Einstein-Hilbert Lagrangian are just a function of the metric only. For linearized perturbations around an isotropic space-time, this class of models is entirely specified by a rank 4 tensor that encodes possibly time-dependent masses for the gravitons. This tensor has the same symmetries as an elasticity tensor, suggesting an interpretation of massive gravity as an effective rigidity of space-time. If we choose a form for this tensor which is compatible with the symmetries of FRW and enforce full reparameterization invariance, then the only theory possible is a cosmological constant. However, in the case where the theory is only time translation invariant, the ghost-free massive gravity theory is equivalent to the elastic dark energy scenario with the extra Lorentz violating vector giving rise to 2 transverse and 1 longitudinal degrees of freedom, whereas when one demands spatial translation invariance one is left with scalar field theory with a non-standard kinetic term.
description: 10 pages
Low daily dose of 3 mg monacolin K from RYR reduces the concentration of LDL-C in a randomized, placebo-controlled intervention
Creators: name: Heinz, Tina
name: Schuchardt, Jan Philipp
name: Möller, Katharina
name: Hadji, Peyman
name: Hahn, Andreas
Publisher: name: New York : Elsevier Inc.
Year: 2016
Subjects: subject: Folic acid
subject: Homocysteine
subject: LDL-cholesterol
subject: Monacolin K
subject: Red yeast rice
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Hypercholesterolemia and elevated homocysteine concentrations are associated with cardiovascular risk. Previous studies have demonstrated a cholesterol-lowering effect of red yeast rice (RYR) supplements which contained 5 to 10 mg of monacolin K. We hypothesized that the intake of a low monacolin K dose may likewise reduce low-density lipoprotein–cholesterol (LDL-C) and other plasma lipids. In secondary analyses, we tested the homocysteine lowering effect of folic acid, which was also included in the study preparation. Therefore, we conducted a randomized, double-blind, and placebo-controlled intervention study. One hundred forty-two nonstatin-treated participants with hypercholesterolemia (LDL-C ≥ 4.14 ≤ 5.69 mmol/L) were randomized to the supplement group with RYR or the placebo group. Participants of the supplement group consumed 3 mg monacolin K and 200 μg folic acid per day. A significant (P < .001) reduction of LDL-C (−14.8%), total cholesterol (−11.2%), and homocysteine (−12.5%) was determined in the supplement group after 12 weeks. A total of 51% of the participants treated with RYR achieved the limit of LDL-C <4.14 mmol/L advised and 26% reached the threshold level of homocysteine <10 μmol/L. No significant changes were exhibited within the placebo group. Other parameters remained unchanged and no intolerances or serious adverse events were observed. In conclusion, we demonstrated that a low dose of daily 3 mg monacolin K from RYR reduces the concentration of LDL-C; a risk factor for cardiovascular diseases.
The fine structure of microwave-induced magneto-oscillations in photoconductivity of the two-dimensional electron system formed on a liquid-helium surface
Creators: name: Monarkha, Yuriy P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The influence of the inelastic nature of electron scattering by surface excitations of liquid helium (ripplons) on the shape of magnetoconductivity oscillations induced by resonance microwave (MW) excitation is theoretically studied. The MW field provides a substantial filling of the first excited surface subband which sparks off inter-subband electron scattering by ripplons. This scattering is the origin of magneto-oscillations in the momentum relaxation rate. The inelastic effect becomes important when the energy of a ripplon involved compares with the collision broadening of Landau levels. Usually, such a condition is realized only at sufficiently high magnetic fields. On the contrary, the inelastic nature of inter-subband scattering is shown to be more important in a lower magnetic field range because of the new enhancement factor: the ratio of the inter-subband transition frequency to the cyclotron frequency. This inelastic effect affects strongly the shape of conductivity oscillations which acquires an additional wavy feature (a mixture of splitting and inversion) in the vicinity of the level-matching points where the above noted ratio is close to an integer.
description: 10 pages 6 figures
Bericht über den Wiedereinbau historischer Wandtäfelungen im Grünen Saal des Rathauses zu Aachen
Creators: name: Küpper, Hans
Publisher: name: Aachener Kunstblätter
Year: 2016

description: -
description: Aachener Kunstblätter, Bd. 29 (1964): Aachener Kunstblätter
title: Global Entrepreneurship Monitor. Unternehmensgründungen im weltweiten Vergleich : Länderbericht Deutschland 2010
title: Global Entrepreneurship Monitor Unternehmensgründungen im weltweiten Vergleich: Länderbericht Deutschland 2010
titleType: AlternativeTitle
Creators: name: Sternberg, Rolf
name: Brixy, Udo
name: Hundt, Christian
name: Vorderwülbecke, Arne
Publisher: name: Hannover ; Nürnberg : Institut für Wirtschafts- und Kulturgeographie, Leibniz Universität Hannover ; Institut für Arbeitsmarkt- und Berufsforschung (IAB)
Year: 2011
Subjects: subject: Entrepreneurship
subject: Global Entrepreneurship Monitor
subject: Gründungen
subject: Unternehmensgründungen
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: Der Länderbericht Deutschland im Rahmen des Global Entrepreneurship Monitors gibt seit 1999 jährlich Auskunft über die Gründungsaktivitäten, -motive und -einstellungen in der deutschen Bevölkerung. Er wird vom deutschen Team des GEM unter Leitung von Prof. Rolf Sternberg herausgegeben.
description: The country report of Germany of the Global Entrepreneurship Monitor (GEM) provides a yearly analysis of entrepreneurship activities, motives, and attitudes in the German population, since 1999. It is published by the German team of the GEM under the lead of Prof. Rolf Sternberg.
A super Ornstein-Uhlenbeck process interacting with its center of mass
Creators: name: Gill, Hardeep
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We construct a supercritical interacting measure-valued diffusion with representative particles that are attracted to, or repelled from, the center of mass. Using the historical stochastic calculus of Perkins, we modify a super Ornstein-Uhlenbeck process with attraction to its origin, and prove continuum analogues of results of Englander [Electron. J. Probab. 15 (2010) 1938-1970] for binary branching Brownian motion. It is shown, on the survival set, that in the attractive case the mass normalized interacting measure-valued process converges almost surely to the stationary distribution of the Ornstein-Uhlenbeck process, centered at the limiting value of its center of mass. In the same setting, it is proven that the normalized super Ornstein-Uhlenbeck process converges a.s. to a Gaussian random variable, which strengthens a theorem of Englander and Winter [Ann. Inst. Henri Poincare Probab. Stat. 42 (2006) 171-185] in this particular case. In the repelling setting, we show that the center of mass converges a.s., provided the repulsion is not too strong and then give a conjecture. This contrasts with the center of mass of an ordinary super Ornstein-Uhlenbeck process with repulsion, which is shown to diverge a.s. A version of a result of Tribe [Ann. Probab. 20 (1992) 286-311] is proven on the extinction set; that is, as it approaches the extinction time, the normalized process in both the attractive and repelling cases converges to a random point a.s.
description: Published in at http://dx.doi.org/10.1214/11-AOP741 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)