bluuebunny/crossref_metadata_2025_split huggingface dataset:
Beitrag zur thermischen Speicherung von Netzüberlasten infolge regenerativer Energien in Gebäuden
Authors: Bauer Martin , Lorz Caroline , Sedlmeier Michael , Schwanitz Matthias , Fries Eberhard , Hochhuber Josef 
Published: February 2013

AbstractBayern hat sich zum Ziel gesetzt, in den nächsten Jahren die Erzeugung von Strom aus erneuerbaren Energien mit dem Ausbau von zusätzlich bis zu 1500 Windkraftanlagen zu forcieren. Zusammen mit dem Ausbau von Photovoltaik‐Anlagen ergibt sich ein wesentlicher Anteil an ungeregelt anfallender Netzlast, die zeitweilig zu großen Leistungsüberschüssen führen kann. Vor diesem Hintergrund wird ein Versuchsprogramm zum Lastmanagement eines elektrischen Netzes vorgestellt, bei dem in einem Gebäude mit hoher Energieeffizienz elektrische Energie über thermische Speicher aufgenommen wird. Vergleichend werden Simulationsrechnungen zur Modellierung der Versuchsergebnisse unter besonderer Berücksichtigung des Speicherverhaltens der Baukonstruktion in der vorhandenen Betonkerntemperierung durchgeführt.Thermal energy storage of grid overload as a result of renewable energies from buildings. Bavaria´s aim in the near future is to increase the production of electricity from renewable energies by setting up 1,500 additional new wind power plants. This situation, together with the expansion of photovoltaic power plants, leads to varying network loads and temporarily uncontrolled excesses in the power supply. This research program is, therefore, being initiated to enhance load management in an electric network. Thermal storage units in a highly energy efficient building are supplied with energy from peak loads. Simulations for modelling the test results will be compared and carried out, focusing particularly on the thermal storage properties of the building construction in the existing concrete core heating system.
Neue Lager für die Wuppertaler Schwebebahn
Authors: Kauschke Wolfgang 
Published: February 2013

AbstractDer Neubau der Wuppertaler Schwebebahn war Anlass für umfangreiche Versuche an runden bewehrten Elastomerlagern und an Druckstücken für Punktkipplager. Die wichtigsten allgemein interessierenden Ergebnisse der Versuche sind:– Die Rückstellmomente von bewehrten Elastomerlagern wurden bislang erheblich unterschätzt.– Der Einfluss der plastischen Verformung auf das Rückstellmoment von stählernen Druckstücken ist vernachlässigbar.Es wird über einen Teil der durchgeführten Versuche und deren Auswertung berichtet (Teil 1 s. H. 1/2013).New bearings for the overhead railway in Wuppertal – Part 2: Pressure pieces for pointracks bearingsThe reconstruction of the overhead railway in Wuppertal was the occasion for extensive testing on circular laminated elastomeric bearings as well as on pressure pieces for point rocker bearings. The most important results of the tests are as follows:– up to now the restoring moments of laminated elastomeric bearings are considerably underestimated– the influence of plastic deformation on the restoring moments of steel point rocker bearings is negligible.The following report describes a part of the conducted tests and the analysis.
Motivational Effects of the Perceived Image of Non‐governmental Organisations
Authors: Pinazo Daniel , Peris Rosana , Ramos Anna , Brotons Javier 
Published: February 2013

ABSTRACTThe motivational effect of the perceived image of non‐governmental organisations (NGOs) was analysed in two studies. Results from the first study, comprising two samples (N = 314 and N = 220), point to three dimensions of the perceived image of NGOs (solidarity, misleading and instrumentality). These dimensions have different effects on intention to collaborate and to recommend others to collaborate. In the second study, with a sample of N = 485, confirmatory analysis confirmed the three‐factor solution as appropriate. The misleading image emerged as a source of reactance to NGO campaigns. Results suggest the importance of promoting the image of solidarity as a motivational strategy. Copyright © 2013 John Wiley & Sons, Ltd.
In‐stent restenosis is inhibited in a bare metal stent implanted distal to a sirolimus‐eluting stent to treat a long de novo coronary lesion with small distal vessel diameter
Authors: Obata Jyun‐ei , Nakamura Takamitsu , Kitta Yoshinobu , Saito Yukio , Sano Keita , Fujioka Daisuke , Kawabata Ken‐ichi , Kugiyama Kiyotaka 
Published: February 2013

ObjectivesThis study examined whether sirolimus‐eluting stent (SES) implantation exerts an antiproliferative action on a bare metal stent (BMS) placed distally in the same coronary artery.BackgroundDiffusion of sirolimus into flowing coronary blood may cause accumulation of this drug in the coronary bed beyond the distal edge of an SES.MethodsWe analyzed data from 115 consecutive patients with ischemic heart disease who were treated with two overlapping stents without a gap in the same coronary artery for a long de novo lesion. The distal stent was a 2.25 mm BMS in all patients, and the proximal stent was an SES in 73 patients (SES‐BMS group) and a BMS in 42 patients (BMS‐BMS group). Quantitative coronary angiography (QCA) and intravascular ultrasound (IVUS) were performed at stent implantation and 8 months later.ResultsClinical and procedural variables were comparable between the two groups. QCA and IVUS showed that the SES‐BMS group had less luminal late loss and a lower percent of in‐stent volume obstruction in the distal BMS compared with the BMS‐BMS group. Furthermore, compared with the BMS‐BMS group, the SES‐BMS group had less in‐stent restenosis (23.3 vs. 54.8%, P < 0.0005) and target lesion revascularization (21.9 vs. 50.0%, P < 0.005).ConclusionsSES implantation just proximal to a BMS inhibits neointimal proliferation in the BMS, when both stents are implanted in the same coronary artery to treat a de novo lesion. © 2013 Wiley Periodicals, Inc.
New approach to direct stenting using a novel “all‐in‐one” coronary stent system via 5 French diagnostic catheters: A pilot study
Authors: Khattab Ahmed A. , O'Sullivan Crochan J. , Stefanini Giulio G. , Räber Lorenz , Paquin Mark , Windecker Stephan , Meier Bernhard 
Published: February 2013

ObjectivesWe sought to evaluate the strategy success and short term clinical outcomes of direct stenting via 5 French (F) diagnostic catheters using a novel bare metal stent with integrated delivery system (IDS) (Svelte Medical Systems, New Providence, NJ) and compare the results to a conventionally treated matched group.MethodsFifteen consecutive patients with lesions deemed suitable for direct stenting using a bare metal stent were included. The primary endpoint was the strategy success defined as the ability to successfully treat a target lesion via a 5 F diagnostic catheter with a good angiographic result (TIMI III flow, residual stenosis ≤20%). Procedure and fluoroscopy times, contrast agent use, cost, and short‐term clinical outcomes were compared to a matched group treated via conventional stenting.ResultsThe primary endpoint was reached in 14/15 patients (93%). There were no significant differences in procedural (58.6 min ± 12.7 vs. 57.4 min ± 14.2) or fluoroscopy times (10.0 min ± 4.3 vs.10.1 min ± 3.9) or contrast agent use (193.7 ml ± 54.8 vs. 181.4 ml ± 35.6). However, there were significant reductions in materials used in the study group compared to the control group equating to cost savings of almost US $600 per case (US $212.44 ± 258.09 vs. US $804.69 ± 468.11; P = 0.001).ConclusionsDirect stenting using a novel bare metal stent with an IDS via 5 F diagnostic catheters is a viable alternative to conventional stenting in selected patients and is associated with significant cost savings.© 2013 Wiley Periodicals, Inc.
Deactivation Pathways of the Catalytic Activity of Metal–Organic Frameworks in Condensation Reactions
Authors: Opanasenko Maksym , Dhakshinamoorthy Amarajothi , Čejka Jiří , Garcia Hermenegildo 
Published: February 2013

AbstractIn the present study we have selected three different condensation reactions as model reactions, namely the hydroxylalkylation of anisole by paraformaldehyde to bis(methoxyphenyl)methane, the Pechmann condensation of phenols with ethyl acetoacetate (EAA) to coumarins and the Knoevenagel condensation of two aldehydes with three active methylene compounds to form α,β‐unsaturated esters and nitriles, using two related Fe‐containing metal–organic frameworks (MOFs), namely commercial Fe(BTC) (BTC: 1,3,5‐benzenetricarboxylate) and synthetic MIL‐100(Fe) as the catalysts. The main aim of this study was to determine the nature of the poisons, the MOF structural stability in connection with the substrate, and the variations in the product selectivity. We have found that undesired intermediates (bisarylmethyl cation in the case of hydroxyalkylation) or byproducts (benzoic acid in the case of Knoevenagel condensation) can poison the MOF by being strongly adsorbed within the MOFs and blocking the pores. In the Pechmann condensation, besides pore blocking, a low structural stability of Fe(BTC) was reflected in the collapse of the crystal structure, while using polyhydroxy aromatic compounds because of their ability to act as ligands for Fe3+, replacing trimesate ligand. MIL‐100(Fe) was considerably more robust for this reaction.
Fluoreszenzfarbstoffe in der Natur
Authors: Weiß Dieter , Brandl Herbert 
Published: February 2013

AbstractCumarine als fluoreszierende Verbindungen sind in der Natur weit verbreitet und kommen in zahlreichen Pflanzengattungen und auch in Pilzen vor. Aufgrund ihrer intensiven Fluoreszenz lassen sie sich leicht beobachten. Dies ermöglicht die Durchführung von Experimenten, die mit geringem Aufwand und weitgehend ohne Verwendung von toxischen Chemikalien für jedermann durchführbar sind.
Monoterpensynthese irregulär
Authors: Jaenicke Lothar 
Published: February 2013

AbstractIridoide sind weitverbreitete bizyklische (daher “irreguläre”) Monoterpene, die Pflanzen zum Schutz gegen Fraß und Mikrobenbefall produzieren und die auch pharmakologisch als Antibiotika und Antimykotika eingesetzt werden. Hochaktuell sind sie vor allem auch in Form der “Monoterpenalkaloide = MIAs”, Kondensationsprodukten von Iridoiden mit der Indol‐Aminosäure Tryptophan, gegen Gewebetumoren beim Menschen.
Cellular automata coupled with steady‐state nutrient solution permit simulation of large‐scale growth of tumours
Authors: Shrestha Sachin Man Bajimaya , Joldes Grand Roman , Wittek Adam , Miller Karol 
Published: February 2013

SUMMARYWe model complete growth of an avascular tumour by employing cellular automata for the growth of cells and steady‐state equation to solve for nutrient concentrations. Our modelling and computer simulation results show that, in the case of a brain tumour, oxygen distribution in the tumour volume may be sufficiently described by a time‐independent steady‐state equation without losing the characteristics of a time‐dependent diffusion equation. This makes the solution of oxygen concentration in the tumour volume computationally more efficient, thus enabling simulation of tumour growth on a large scale. We solve this steady‐state equation using a central difference method. We take into account the composition of cells and intercellular adhesion in addition to processes involved in cell cycle—proliferation, quiescence, apoptosis, and necrosis—in the tumour model. More importantly, we consider cell mutation that gives rise to different phenotypes and therefore a tumour with heterogeneous population of cells. A new phenotype is probabilistically chosen and has the ability to survive at lower levels of nutrient concentration and reproduce faster. We show that heterogeneity of cells that compose a tumour leads to its irregular growth and that avascular growth is not supported for tumours of diameter above 18 mm. We compare results from our growth simulation with existing experimental data on Ehrlich ascites carcinoma and tumour spheroid cultures and show that our results are in good agreement with the experimental findings. Copyright © 2013 John Wiley & Sons, Ltd.
Prediction of the goat milk fatty acids by near infrared reflectance spectroscopy
Authors: Andueza Donato , Rouel Jacques , Chilliard Yves , Leroux Christine , Ferlay Anne 
Published: February 2013

AbstractNear infrared reflectance spectroscopy (NIRS) was used to predict the goat milk fatty acid (FA) profile. The ability of cow milk broad‐based calibration equations to predict the goat milk FA profile was assessed. Three hundred twenty‐eight samples in the calibration set and 108 in the validation set were analyzed. We showed that the bias and unexplained error were significant for most of the FA despite an adequate standardized Mahalanobis distance (index to establish the boundaries of a population of samples) which allowed us to test the ability of bovine models to predict goat milk FA profiles. To better predict the goat milk FA composition, a specific goat model was investigated. The cross‐validation coefficient of determination (R2CV; proportion of variance explained by the model in cross‐validation) and residual predictive deviation (RPD; index which allows to standardize the standard error of prediction (SEP)) were >0.90 and 3, for saturated, monounsaturated, and unsaturated FA, total trans FA, isomer cis9trans11 of CLA, cis9‐, trans10‐, and trans11‐C18:1, respectively. Monitoring of the equation performance of milk FA included the calculation of the bias and unexplained error.Practical applications: In this work, we evaluated the ability of NIRS to predict FA composition of goat milk and tested the ability of using broad‐based cow milk calibration equations to monitor an independent set of goat milk samples. We tested the hypothesis that the calibration equations obtained for FA from cow milk could be applied on goat milk. As the spectra of goat milk are similar to those of cow milk when they are measured by the standardized Mahalanobis distance (index to establish the boundaries of a population of samples), we can accept the hypothesis. It will be possible to use the existing calibration equations for predicting FA profile on spectra of milk of a different specie. However, the rejection of the hypothesis would put in doubt the use of Mahalanobis distance as the unique index for testing the performance of calibration equations on different milk populations for predicting FA.
Plants as river system engineers
Authors: Gurnell Angela 
Published: February 2013

ABSTRACTPlants growing within river corridors both affect and respond to fluvial processes. Their above‐ground biomass modifies the flow field and retains sediment, whereas their below‐ground biomass affects the hydraulic and mechanical properties of the substrate and consequently the moisture regime and erosion susceptibility of the land surface.This paper reviews research that dates back to the 1950s on the geomorphological influence of vegetation within fluvial systems. During the late twentieth century this research was largely pursued through field observations, but during the early years of the twenty‐first century, complementary field, flume and theoretical/modelling investigations have contributed to major advances in understanding the influence of plants on fluvial systems. Flume experiments have demonstrated the fundamental role of vegetation in determining river planform, particularly transitions from multi‐ to single‐thread forms, and have provided insights into flow–vegetation–sediment feedbacks and landform building, including processes such as channel blockage and avulsion. At the same time, modellers have incorporated factors such as moisture‐dependent plant growth, canopy and root architecture and their influence on flow resistance and sediment/bank reinforcement into morphodynamic models. Meanwhile, field investigations have revealed that vegetation has a far more important and complex influence on fluvial systems than previously realized.It is now apparent that the influence of plants on river systems is significant across space scales from individual plants to entire forested river corridors. Small plant‐scale phenomena structure patch‐scale geomorphological forms and processes, and interactions between patches are almost certainly crucial to larger‐scale and longer‐term geomorphological phenomena. The influence of plants also varies continuously through time as above‐ and below‐ground biomass change within the annual growth cycle, over longer‐term growth trajectories, and in response to external drivers of change such as climatic, hydrological and fluvial fluctuations and extremes. Copyright © 2013 John Wiley & Sons, Ltd.
Railway tunnels on Tbilisi bypass project – Georgia / Eisenbahntunnel für das Umfahrungsprojekt Tiflis, Georgien
Authors: Prebeg Igor 
Published: February 2013

AbstractThe new transport corridor TRACECA (Transport Corridor Europe‐Caucasus‐Asia) connects Azerbaijan with Black sea ports and allows an increase in the freight volume and passenger traffic in the future. Within this corridor the Georgian Government decided to build a bypass around Tbilisi as a solution for the trend of increasing traffic. The bypass railway project of Tbilisi includes four single‐tube tunnels in a suburban area of Tbilisi with small overburden which pass through poor and complex rock mass conditions. The project is still ongoing and will be finished in 2013.Der neue Verkehrskorridor Transport Corridor Europe‐Caucasus‐Asia (TRACECA) verbindet Aserbaidschan mit einigen Hafenstädten am Schwarzen Meer und ermöglicht so eine künftige Erhöhung des Frachtvolumens und des Personenverkehrs. Die georgische Regierung hat beschlossen, innerhalb dieses Korridors eine Umfahrung für Tiflis zu bauen, um das stetig steigende Verkehrsaufkommen zu bewältigen. Das Eisenbahnumfahrungsprojekt für Tiflis umfasst vier Doppelspurtunnel mit geringer Überlagerung. Die Tunnel befinden sich in den Außenbezirken von Tiflis und verlaufen durch ungünstige und komplexe Gebirgsverhältnisse. Das Projekt wird 2013 fertiggestellt.
Austrian tunnelling expertise connecting the Kashmir valley to India / Österreichische Tunnelbaukompetenz verbindet das Kaschmirtal mit Indien
Authors: Holzleitner Wolfgang , Kraft‐Fish Martin , Imre Bernd , Preuth Thomas 
Published: February 2013

AbstractWhen completed, the 292 km long Udhampur‐Srinagar‐Baramulla Rail Link Project will connect towns in the Kashmir Valley to the lowlands of India. The Government of India declared the railway as a “Project of National Importance” in March 2002. In October 2009 a 119 km section was put into operation. Works are expected to be completed by 2018.Austrian and other European consultants have been active on the project since its inception. This report concerns the design of a 15 km long central section of the railway between the Sumber and Arpinchala stations awarded to Bernhard Ingenieure ZT GmbH in 2012. Out of a total length of 15 km, 13.0 km are in tunnels, 0.9 km bridges, and the remainder are stations. The alignment section lies in the young Himalaya, passing through mountains on the western side of the Chenab River. Geological conditions are therefore demanding and tectonic activity is frequent.Although design is ongoing, this report presents the approach taken by the consultant in fieldwork, project optimisation, design and contractual specifications. The issue of muck disposal is also discussed.Nach ihrer Fertigstellung wird die 292 km lange Eisenbahnstrecke Udhampur‐Srinagar‐Baramulla das Kaschmirtal mit dem indischen Tiefland verbinden. Aufgrund seiner sozio‐ökonomischen sowie strategischen Bedeutung deklarierte die indische Regierung das Projekt im März 2002 als “Projekt von nationaler Bedeutung”. Im Oktober 2009 konnte ein erster, 119 km langer Teilabschnitt in Betrieb genommen werden. Der Abschluss aller Arbeiten ist für das Jahr 2018 geplant.Österreichische und weitere europäische Beratungsgesellschaften sind von Beginn an in dieses Projekt involviert gewesen. Die Bernard Ingenieure ZT GmbH mit Sitz in Hall in Tirol gewann 2012 den Bieterbewerb für ein 15 km langes Teilstück zwischen den Bahnhöfen von Sumber und Arpinchala. Ausgewählte technische und vertragliche Herausforderungen dieses Teilstücks im Hochgebirge, das sich auf etwa 13 km Tunnelstrecke, etwa 0,9 km Brückenbauwerke und zwei Bahnhofsbereiche verteilt, ist Gegenstand dieses Berichts. Die Trasse befindet sich in der so genannten Young Himalaya Range in der Bergregion westlich des Chenab Flusses. Aufgrund der immer noch aktiven Gebirgshebung sind die topographischen, naturgefahrenkundlichen und geologischen Randbedingungen herausfordernd.
Natural iron fertilization by the Eyjafjallajökull volcanic eruption
Authors: Achterberg Eric P. , Moore C. Mark , Henson Stephanie A. , Steigenberger Sebastian , Stohl Andreas , Eckhardt Sabine , Avendano Lizeth C. , Cassidy Michael , Hembury Debbie , Klar Jessica K. , Lucas Michael I. , Macey Anna I. , Marsay Chris M. , Ryan‐Keogh Thomas J. 
Published: February 2013

AbstractAerosol deposition from the 2010 eruption of the Icelandic volcano Eyjafjallajökull resulted in significant dissolved iron (DFe) inputs to the Iceland Basin of the North Atlantic. Unique ship‐board measurements indicated strongly enhanced DFe concentrations (up to 10 nM) immediately under the ash plume. Bioassay experiments performed with ash collected at sea under the plume also demonstrated the potential for associated Fe release to stimulate phytoplankton growth and nutrient drawdown. Combining Fe dissolution measurements with modeled ash deposition suggested that the eruption had the potential to increase DFe by >0.2 nM over an area of up to 570,000 km2. Although satellite ocean color data only indicated minor increases in phytoplankton abundance over a relatively constrained area, comparison of in situ nitrate concentrations with historical records suggested that ash deposition may have resulted in enhanced major nutrient drawdown. Our observations thus suggest that the 2010 Eyjafjallajökull eruption resulted in a significant perturbation to the biogeochemistry of the Iceland Basin.
Temporal stability of soil water content as affected by climate and soil hydraulic properties: a simulation study
Authors: Martínez Gonzalo , Pachepsky Yakov A. , Vereecken Harry 
Published: February 2013

AbstractTemporal stability of soil water content (TS SWC) is an often‐observed phenomenon, which characterization finds multiple applications. Climate and variability in soil properties are usually mentioned as factors of TS SWC, but their effects are far from clear. The objective of this work was to use SWC modeling to evaluate the effects of climate and soil hydraulic properties on the TS of soil water at different measurement schedules. We selected four representative climates found in USA and simulated the multiyear SWC dynamics for sandy loam, loam, and silty clay loam soils, all having the lognormal spatial distribution of the saturated hydraulic conductivity. The CLIMGEN and the HYDRUS6 codes were used to generate weather patterns and to simulate SWC, respectively. Four different methods were applied to select the representative location (RL). The low probability of having the same variability of mean relative differences of soil water under different climates was found in most of the cases. The probability that the variance of mean relative differences depended on sampling frequency was generally higher than 91% for the three soils. The interannual difference in mean relative differences variation from short and intensive summer campaigns was highly probable for all climates and soils. The RLs changed as climate and measurement scheduling changed, and they were less pronounced for coarse‐textured soils. The RL selection methods based solely on bias provided more consistency as compared with other methods. The TS appears to be the result of the interplay between climate, soil properties, and survey protocols. One implication of this factor interaction effect on TS SWC is that a simulation study can be useful to decide on the feasibility of including a search for TS‐based RLs for a specific site. Copyright © 2013 John Wiley & Sons, Ltd.