cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Antennensimulationen in der Automobilindustrie für Spezialfahrzeuge
Creators: name: Rohe, Melanie
name: Dietrich, Sascha
name: Hellmann, Martin
name: Schreiber, Sebastian
Publisher: name: Frankfurt/Main : mesago
Year: 2018
Subjects: subject: Personenschutz
subject: numerische Berechnung
subject: Spezialfahrzeug
subject: Chassis
subject: Stoßfänger
subject: Öffnungswinkel
subject: Nebenkeule
subject: Fahrzeugantenne
subject: elektromagnetisches Feld
subject: Fahrerkabine
subject: Baureihe
subject: Kommunikationssystem
subject: Amplitude
subject: Automobilindustrie
subject: Unfallverhütungsvorschrift
subject: Antennensimulation
subject: Befestigungspunkt
subject: Hauptkeule
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Im Rahmen der Entwicklung logistischer Radfahrzeuge der Baureihe HX wurden bereits während der Definitions- und Konzeptphase numerische Feldberechnungen durchgeführt. Untersucht wurde die Positionierung von Antennen, die den Kommunikations- und GPS-Systemen dienen. Ziel war es die Abstrahlcharakteristik der Fahrzeugantennen zu untersuchen. Das wurde für einzelne Frequenzpunkte der Antennen durchgeführt. Die Anzahl möglicher Befestigungspunkte von Antennen an Chassis sind aufgrund der Rüstsätze begrenzt. Hier wurden zwei mögliche Anordnungen der Antennen untersucht. Zunächst waren vier Antennen an der Fahrzeugfront befestigt. Eine weitere Option war die Positionierung von zwei der vier Antennen an der linken bzw. rechten Seite des Stoßfängers. Die Simulationsergebnisse zeigten, dass sich die Hauptkeulen, die maximalen Amplituden und die Öffnungswinkel nicht ändern. Hingegen war auffällig, dass leichte Reduzierungen von einzelnen Nebenkeulen auftraten sowie eine Verlagerung derer Maxima erfolgte. Ein weiterer wichtiger Aspekt war die Bewertung des Personenschutzes, die nach der "Unfallverhütungsvorschrift Elektromagnetische Felder" der DGUV erfolgte. Entscheidend waren die maximalen Feldstärken innerhalb der Fahrerkabine sowie die in der Nähe der Dachluke. Hier zeigte sich, dass der ausreichende Personenschutz gegeben war.
Vapor Phase Growth and Grain Boundary Structure of Molybdenum Disulfide Atomic Layers
Creators: name: Najmaei, Sina
name: Liu, Zheng
name: Zhou, Wu
name: Zou, Xiaolong
name: Shi, Gang
name: Lei, Sidong
name: Yakobson, Boris I.
name: Idrobo, Juan-Carlos
name: Ajayan, Pulickel M.
name: Lou, Jun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Single layered molybdenum disulfide with a direct bandgap is a promising two-dimensional material that goes beyond graphene for next generation nanoelectronics. Here, we report the controlled vapor phase synthesis of molybdenum disulfide atomic layers and elucidate a fundamental mechanism for the nucleation, growth, and grain boundary formation in its crystalline monolayers. Furthermore, a nucleation-controlled strategy is established to systematically promote the formation of large-area single- and few-layered films. The atomic structure and morphology of the grains and their boundaries in the polycrystalline molybdenum disulfide atomic layers are examined and first-principles calculations are applied to investigate their energy landscape. The electrical properties of the atomic layers are examined and the role of grain boundaries is evaluated. The uniformity in thickness, large grain sizes, and excellent electrical performance of these materials signify the high quality and scalable synthesis of the molybdenum disulfide atomic layers.
description: Submitted on Jan 6th 2013
MoM-basierte Ersatzschaltbilddarstellung für strahlende, verlustbehaftete Drahtverbindungsstrukturen
Creators: name: Bednarz, Christian
name: Leone, Marco
Publisher: name: Frankfurt/Main : mesago
Year: 2018
Subjects: subject: Ersatzschaltbild
subject: Schaltelement
subject: Netzmodell
subject: Feldberechnung
subject: Admittanz
subject: Eigenwertproblem
subject: Zeitbereich
subject: Eigenwertentwicklung
subject: Strahlungsverlust
subject: EMV-Analyse
subject: Strahlungswiderstand
subject: Zeitbereichssimulation
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Eine schnelle und vielseitige modale Ersatzschaltbilddarstellung für beliebig verzweigte Drahtstrukturen mit moderater Abstrahlung und frequenzabhängigen Ohm'schen Verlusten wurde vorgestellt. Beschleunigte Konvergenz wird durch ein statisches Kapazitätsnetzwerk erreicht. Eine Eigenwertentwicklung der Admittanz wird zum Aufstellen eines Foster-Ersatzschaltbildes herangezogen, zu welchem Strahlungsverluste nachträglich mit der Induced-EMF-Methode hinzugefügt werden. Weiterhin wird externe Feldeinkopplung durch zusätzliche modale Quellen realisiert, was das Modell einfach anwendbar für EMV-Analysen macht. Sobald das Eigenwertproblem gelöst wurde und die Strahlungswiderstände ermittelt wurden, sind alle Schaltelemente bekannt und können automatisiert in eine SPICE-Netzliste geschrieben werden. Die Gültigkeit wurde durch Gegenüberstellung der Ergebnisse mit aufwendigeren Referenzvollwellensimulationen mittels kommerzieller Feldberechnungssoftware demonstriert. Zeitbereichssimulationen können direkt mit SPICE-basierten Programmen mit beliebigen aktiven/passiven nichtlinearen Abschlüssen durchgeführt werden, wobei das Netzwerkmodell inhärent stabil ist.
Terrestrische Radarinterferometrie und terrestrisches Laserscanning zur Überwachung alpinen Geländes: Praxiserfahrungen und Theorie
Creators: name: Butt, Jemil
name: Gojcic, Zan
name: Schmid, Lorenz
name: Wieser, Andreas
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: TRI
subject: TLS
subject: Radarinterferometrie
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Terrestrische Radarinterferometrie (TRI) und terrestrisches Laserscanning (TLS) sind Technologien, die sich dank ihrer für Langdistanzmessungen geeigneten, quasi flächenhaften Aufnahmeverfahren insbesondere zur Erfassung grossräumiger Deformationsphänomene eignen. Im Rahmen eines von der ETH durchgeführten Projektes zur Evaluierung geodätischer Messkonzepte für die Überwachung hangrutschungs- und felssturzbezogener Geogefahren in der Südschweiz wurden im Sommer 2019 Messungen mit TRI und TLS in hochalpinem Gelände durchgeführt. Aufbau und autonomer Betrieb der Instrumente sowie die Auswertung der unter solchen Bedingungen erhobenen Daten bringen besondere Herausforderungen mit sich. Diese beinhalten hardwaretechnische Aspekte wie die Bereitstellung geeigneter Wetterschutzmassnahmen und einer über Monate stabilen Stromversorgung aber auch entsprechende Prozessierungsstrategien zur Verminderung des Einflusses atmosphärischer Effekte oder zur Extraktion von Verschiebungsfeldern aus Folgen von Punktwolken. Wir präsentieren Lösungsansätze, deren Umsetzung in der Praxis und diskutieren deren Leistungsfähigkeit vor dem Hintergrund der während des Projektes gesammelten Erfahrungen. Besondere Beachtung erfahren die Quantifizierung und Korrektur atmosphärischer Effekte in der terrestrischen Radarinterferometrie mit Hilfe von Hilberträumen mit reproduzierendem Kern sowie die merkmalsbasierte Verarbeitung von Punktwolken mit Hilfe neuronaler Netze.
Epidemiology and cost of seasonal influenza in Germany - A claims data analysis
Creators: name: Scholz, Stefan
name: Damm, Oliver
name: Schneider, Udo
name: Ultsch, Bernhard
name: Wichmann, Ole
name: Greiner, Wolfgang
Publisher: name: London : BioMed Central Ltd.
Year: 2019
Subjects: subject: Claims data
subject: Cost of illness
subject: Epidemiology
subject: Health economics
subject: Seasonal influenza
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Background: Seasonal influenza contributes substantially to the burden of communicable diseases in Europe, especially among paediatric populations and the elderly. The aim of the present study was to estimate the incidence of seasonal influenza in Germany, the probabilities of related complications and the economic burden of influenza per case and on a population level for different age groups. Methods: Claims data from 2012 to 2014 from > 8 million insured of a large German sick-ness fund were analysed. A matched case control study was used on a sub-sample of 100,000 influenza cases to calculate complication rates for ear infections/acute otitis media (AOM) and community-acquired pneumonia (CAP) as well as resource use and costs for seven age groups. Results: Incidence of seasonal influenza varies between the years and is highest among infants and children 2 to 5 years of age. AOM is more likely in the younger age groups with up to 14% more patients in the influenza group than in the control group. CAP is more frequently observed in the younger age groups and in influenza patients 60 years and older. The manifestation of one influenza complication (AOM or CAP) significantly in-creases the occurrence of a second complication (AOM or CAP). The economic burden per case is highest in infants (251.91) and persons over 60 years of age (131.59). Conclusion: The burden of influenza is highest among infants and young children, which is also reflected in the economic burden. Influenza related costs per case are nearly double for infants compared to persons over 60 years of age.
title: Hybrid Modeling of Lithium-Ion Battery: Physics-Informed Neural Network for Battery State Estimation
Creators: name: Singh, Soumya
name: Ebongue, Yvonne Eboumbou
name: Rezaei, Shahed
name: Birke, Kai Peter
Publisher: name: MDPI
Year: 2023

description: Accurate forecasting of the lifetime and degradation mechanisms of lithium-ion batteries is crucial for their optimization, management, and safety while preventing latent failures. However, the typical state estimations are challenging due to complex and dynamic cell parameters and wide variations in usage conditions. Physics-based models need a tradeoff between accuracy and complexity due to vast parameter requirements, while machine-learning models require large training datasets and may fail when generalized to unseen scenarios. To address this issue, this paper aims to integrate the physics-based battery model and the machine learning model to leverage their respective strengths. This is achieved by applying the deep learning framework called physics-informed neural networks (PINN) to electrochemical battery modeling. The state of charge and state of health of lithium-ion cells are predicted by integrating the partial differential equation of Fick’s law of diffusion from a single particle model into the neural network training process. The results indicate that PINN can estimate the state of charge with a root mean square error in the range of 0.014% to 0.2%, while the state of health has a range of 1.1% to 2.3%, even with limited training data. Compared to conventional approaches, PINN is less complex while still incorporating the laws of physics into the training process, resulting in adequate predictions, even for unseen situations.
GNSS, Nivellement und Radar – einheitliche Multisensor-Standorte als Referenzpunkte zur Überwachung von Bodenbewegungen
Creators: name: Spreckels, Volker
name: Bechert, Steffen
name: Schlienkamp, Andreas
name: Drobniewski, Michael
name: Schulz, Michael
name: Schäfer, Florian
name: Kemkes, Eva
name: Rüffer, Jürgen
name: Niemeier, Wolfgang
name: Tengen, Dieter
name: Engel, Thomas
name: Müller, Michael
name: Schmitt, Perdita
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: Steinkohlenbergbau
subject: Deutschland
subject: GNSS-Monitoring
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Auch nach dem Ende des Steinkohlenbergbaus in Deutschland hat eine Überwachung der Abbaubereiche auf Bodenbewegungen zu erfolgen. Es können Restsenkungen und Hebungen durch den Grubenwasseranstieg auftreten, sowie Tagesbrüche und Bruchspalten in den Altbergbaubereichen an Ruhr und Saar. Die Altbergbaubereiche der RAG werden jährlich mit Bildflügen erfasst, wobei simultan ALS-Daten und Luftbilder aufgezeichnet werden. Für die Bereiche des Grubenwasseranstiegs der RAG kommen Feinnivellements, GNSS-Monitoring und die Persistent Scatterer Interferometrie aus Radarsatellitendaten zum Einsatz. Da eine Wiederholungsgenauigkeit der jeweiligen Bezugspunkte - das sind GNSS-Monitoringstationen, Passpunkte zu den Befliegungen und Corner-Reflektoren für die Radarinterferometrie - von ±1 cm in Höhe und Lage über die Jahre benötigt wird, hat die RAG Multisensor-Stationen für GNSS-, Nivellement- und Radardaten entwickelt, die in Zusammenarbeit mit den Landevermessungsbeh örden an Saar und Ruhr errichtet werden sollen. Um in die erforderlichen Genauigkeitsbereiche signifikant vordringen zu können, werden in einem aktuellen Forschungsprojekt der RAG zeitvariante Ausgleichungsverfahren entwickelt und mit Daten aus dem Tagesgesch äft der RAG getestet. Die Arbeiten werden in diesem Beitrag vorgestellt.
Photoionization modeling of oxygen K absorption in the interstellar medium:the Chandra grating spectra of XTE J1817-330
Creators: name: Gatuzz, E.
name: García, J.
name: Mendoza, C.
name: Kallman, T. R.
name: Witthoeft, M.
name: Lohfink, A.
name: Bautista, M. A.
name: Palmeri, P.
name: Quinet, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present detailed analyses of oxygen K absorption in the interstellar medium (ISM) using four high-resolution Chandra spectra towards the X-ray low-mass binary XTE J1817-330. The 11-25 A broadband is described with a simple absorption model that takes into account the pileup effect and results in an estimate of the hydrogen column density. The oxygen K-edge region (21-25 A) is fitted with the physical warmabs model, which is based on a photoionization model grid generated with the xstar code with the most up-to-date atomic database. This approach allows a benchmark of the atomic data which involves wavelength shifts of both the K lines and photoionization cross sections in order to fit the observed spectra accurately. As a result we obtain: a column density of N(H)=1.38+/-0.01\times 10^21 cm^-2; ionization parameter of log(xi)=-2.70+/-0.023; oxygen abundance of A(O)= 0.689^{+0.015}_{-0.010}; and ionization fractions of OI/O = 0.911, OII/O = 0.077, and OIII/O = 0.012 that are in good agreement with previous studies. Since the oxygen abundance in warmabs is given relative to the solar standard of Grevesse et al. (1998), a rescaling with the revision by Asplund et al. (2009) yields A(O)=0.952^{+0.020}_{-0.013}, a value close to solar that reinforces the new standard. We identify several atomic absorption lines Kalpha, Kbeta, and Kgamma in OI and OII; and Kalpha in OIII, OVI, and OVII - last two probably residing in the neighborhood of the source rather than in the ISM. This is the first firm detection of oxygen K resonances with principal quantum numbers n>2 associated to ISM cold absorption.
description: 6 figures
Proteomanalyse von endothelialen Vorläuferzellen mit 2-D Gelelektrophorese und Massenspektrometrie
Creators: name: Czentnár, Zoltán
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Capillary electrophoresis
subject: mass spectrometry
subject: proteomic analysis
subject: Kapillarelektrophorese
subject: Massenspektrometrie
subject: Proteomanalyse
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
The Compressibility in Strongly Correlated Superconductors and Superfluids: From BCS to BEC
Creators: name: Guo, Hao
name: He, Yan
name: Chien, Chih-Chun
name: Levin, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a theoretical study of the compressibility, $κ$, in a Fermi gas with attractive contact interactions, providing predictions for the strongly-attractive regime and the superfluid phase. Our work emphasizes the compressibility sum rule and gauge invariance as constraints on $κ$ and we show how within a particular $t$-matrix approach, these can be satisfied in the normal phase when no approximations are made. For tractability, approximations must be introduced, and it is believed that thermodynamical approaches to $κ$ are more reliable, than correlation function based schemes. Contrasting with other studies in the literature, we present thermodynamic calculations of $κ$; these yield semi-quantitative agreement with experiment and provide physical insight into similar results obtained via quantum Monte Carlo simulations.
description: 5 pages, 1 figure
title: Nutzen von Zusatzsensorik für die Unterscheidbarkeit von Modellen für elektrische Antriebsstränge bei der Struktur- und Parameteridentifikation
title: Benefit of extra sensors for distinguishability of models of electric power trains in structure und parameter identification
titleType: AlternativeTitle
Creators: name: Tantau, Mathias
name: Perner, Lars
name: Wielitzka, Mark
Publisher: name: Düsseldorf : VDI
Year: 2021
Subjects: subject: Model selection
subject: structure and parameter identification
subject: distinguishability
subject: extra sensors
subject: electric drives
subject: Struktur- und Parameteridentifikation
subject: Unterscheidbarkeit
subject: Zusatzsensorik
subject: elektrischer Antriebsstrang
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Für viele Fragestellungen aus Reglerauslegung, Vorsteuerung und Zustandsüberwachung werden Prozessmodelle mit korrekter und physikalisch interpretierbarer innerer Struktur benötigt (phenomenologische Modelle). Die modellbasierten Ansätze werden in der Industrie vielfach noch nicht angewandt, weil die Modellerstellung ein hohes Maß an Expertenwissen und die langwierige Programmierung von Experimenten erfordert. Eine automatischen Struktur- und Parameteridentifikation ist dadurch bebrenzt, dass anhand des Ein-/Ausgangsverhaltens häufig die Unterscheidbarkeit von Modellen nicht gegeben ist. In dieser Veröffentlichung liegt der Fokus auf industriellen Anlagen mit elektrischem Antriebsstrang und einfacher Kinematik wie Regalbediengeräten, Werkzeugmaschinen und Positionierantrieben. Diese Systeme haben häufig nur einen Positions- und einen Stromsensor. Es wird in Experimenten gezeigt, dass durch Hinzunahme von einfach zu installierenden Zusatzsensoren wie Beschleunigungssensoren oder Drehratensensoren in einigen Fällen eine eindeutige Strukturidentifikation ermöglicht wird, auch wenn nur wenig Vorwissen über den Sensorort vorliegt.
Permafrost-Detektion mittels Fernerkundung und Geophysik auf dem tibetischen Plateau
Creators: name: Reinosch, Eike
name: Buckel, Johannes
name: Gerke, Markus
name: Hördt, Andreas
name: Baade, Jussi
name: Riedel, Björn
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: Permafrost
subject: Remote Sensing
subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: Tibetan Plateau
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: In this study we combine geophysical techniques in the form of microwave remote sensing and Electrical Resistance Tomography (ERT) interferometry to study the extent of permafrost in the catchment of Lake Nam Co on the Tibetan plateau. Interferometric Synthetic Aperture Radar (InSAR) is a powerful technique to monitor permafrost related surface displacement processes on a large scale. However, the insensitivity of InSAR data regarding northward or southward directed motion and its inability to detect permafrost when no displacement occurs, impose significant limitations to its application in permafrost study. We highlight those limitations on a rock glacier within Qugaqie basin, a sub-catchment within the Nyainqêntanglha range, and show how ERT can be used to compensate for them. With this combined approach we will create an inventory of rock glaciers and constrain the extent of permafrost areas within the Nyainqêntanglha range.
Hereditary G-compactness
Creators: name: Rzepecki, Tomasz
Publisher: name: arXiv
Year: 2018
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: We introduce the notion of hereditary G-compactness (with respect to interpretation). We provide a sufficient condition for a poset to not be hereditarily G-compact, which we use to show that any linear order is not hereditarily G-compact. Assuming that a long-standing conjecture about unstable NIP theories holds, this implies that an NIP theory is hereditarily G-compact if and only if it is stable (and by a result of Simon, this holds unconditionally for $\aleph_0$-categorical theories). We show that if $G$ is definable over $A$ in a hereditarily G-compact theory, then $G^{00}_A=G^{000}_A$. We also include a brief survey of sufficient conditions for G-compactness, with particular focus on those which can be used to prove or disprove hereditary G-compactness for some (classes of) theories.
description: 21 pages
Abies alba
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: Auf Abies alba: l: LesEvouettes (J.); GegendvonMonthey (nach Coaz;Oberli); La Rassebei Evionnaz (Garns); Martigny-Combe (nach Tubeuf). - 2: Fully; Saillon; Sitten (alles: nach Tubeuf). - 3: Martigny (nach Tubeuf); Martigny-Bovernier (desgl.); Catogne (nach Coaz); Cries (ob Volleges) bis unter Levron (desgl.); unter Chamoille und Hänge Mont Brun-Le Chäble (desgl.); Charrat; Saxon; Rid- des; Visp (alles: nach Tubeuf). Auf PiceaAbies: l: Bois Noir (Marietan); «bei St-Maurice» (F. Delacoste, nach Tubeuf Lit. 1923, S. 305; Fundort möglicherweise identisch mit dem vorstehenden - oder mit «Massongex» [Cat.]?). - 3: Bei Econe (Besse nach Wilczek 1915, S. 113); Champ-Laurentob Saxon,etwa 900 m (F. Delacoste,nachCoaz l. c., S.143; dürfte der Bessesche Fundort sein, obwohlbei Coaz Besse nicht genannt ist); unter Iserables (Wilczek 1915, nach Wilczek l. c.); unter Nendaz (Apotheker Allet, nach Wilczekl. c.); «Kappelenschluchtwald» (Name fehlt auf den Karten) bei Eyholz, 900 m (R. Loretan).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
LISA Pathfinder: First steps to observing gravitational waves from space
Creators: name: LISA Pathfinder Collaboration
name: Audley, H.
name: Born, M.
name: Danzmann, K.
name: Diepholz, I.
name: Heinzel, G.
name: Hewitson, M.
name: Karnesis, N.
name: Kaune, B.
name: Korsakova, N.
name: Paczkowsk, S.
name: Reiche, J.
name: Troebs, M.
name: Wanner, G.
name: Wissel, L.
name: Wittchen, A.
name: Et Al.
Publisher: name: London : Institute of Physics
Year: 2017
Subjects: subject: Gravitational waves
subject: ESA
subject: gravitational wave detection
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: LISA Pathfinder, the European Space Agency's technology demonstrator mission for future spaceborne gravitational wave observatories, was launched on 3 December 2015, from the European space port of Kourou, French Guiana. After a short duration transfer to the final science orbit, the mission has been gathering science data since. This data has allowed the science community to validate the critical technologies and measurement principle for low frequency gravitational wave detection and thereby confirming the readiness to start the next generation gravitational wave observatories, such as LISA. This paper will briefly describe the mission, followed by a description of the science operations highlighting the performance achieved. Details of the various experiments performed during the nominal science operations phase can be found in accompanying papers in this volume.
Innovative Strategies for Observations in the Arctic Atmospheric Boundary Layer (ISOBAR)-the Hailuoto 2017 campaign
Creators: name: Kral, Stephan T.
name: Reuder, Joachim
name: Vihma, Timo
name: Suomi, Irene
name: O'Connor, Ewan
name: Kouznetsov, Rostislav
name: Wrenger, Burkhard
name: Rautenberg, Alexander
name: Urbancic, Gabin
name: Jonassen, Marius O.
name: Båserud, Line
name: Maronga, Björn
name: Mayer, Stephanie
name: Lorenz, Torge
name: Holtslag, Albert A.M.
name: Steeneveld, Gert-Jan
name: Seidl, Andrew
name: Müller, Martin
name: Lindenberg, Christian
name: Langohr, Carsten
name: Voss, Hendrik
name: Bange, Jens
name: Hundhausen, Marie
name: Hilsheimer, Philipp
name: Schygulla, Markus
Publisher: name: Basel : MDPI AG
Year: 2018
Subjects: subject: Arctic
subject: Boundary layer remote sensing
subject: Ground-based in-situ observations
subject: Polar
subject: Remotely piloted aircraft systems (RPAS)
subject: Sea ice
subject: Stable atmospheric boundary layer
subject: Turbulence
subject: Unmanned aerial vehicles (UAV)
subject: Antennas
subject: Arctic vehicles
subject: Atmospheric structure
subject: Fighter aircraft
subject: Fixed wings
subject: Remote sensing
subject: Weather information services
subject: Wind power
subject: In-situ observations
subject: Remotely piloted aircraft
subject: Atmospheric boundary layer
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The aim of the research project "Innovative Strategies for Observations in the Arctic Atmospheric Boundary Layer (ISOBAR)" is to substantially increase the understanding of the stable atmospheric boundary layer (SBL) through a combination of well-established and innovative observation methods as well as by models of different complexity. During three weeks in February 2017, a first field campaign was carried out over the sea ice of the Bothnian Bay in the vicinity of the Finnish island of Hailuoto. Observations were based on ground-based eddy-covariance (EC), automatic weather stations (AWS) and remote-sensing instrumentation as well as more than 150 flight missions by several different Unmanned Aerial Vehicles (UAVs) during mostly stable and very stable boundary layer conditions. The structure of the atmospheric boundary layer (ABL) and above could be resolved at a very high vertical resolution, especially close to the ground, by combining surface-based measurements with UAV observations, i.e., multicopter and fixed-wing profiles up to 200magl and 1800magl, respectively. Repeated multicopter profiles provided detailed information on the evolution of the SBL, in addition to the continuous SODAR and LIDAR wind measurements. The paper describes the campaign and the potential of the collected data set for future SBL research and focuses on both the UAV operations and the benefits of complementing established measurement methods by UAV measurements to enable SBL observations at an unprecedented spatial and temporal resolution.
The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. Type II Cepheids in the Galactic Bulge - Supplement
Creators: name: Soszynski, I.
name: Udalski, A.
name: Pietrukowicz, P.
name: Szymanski, M. K.
name: Kubiak, M.
name: Pietrzynski, G.
name: Wyrzykowski, L.
name: Ulaczyk, K.
name: Poleski, R.
name: Kozlowski, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of additional 22 RV Tau stars located in the OGLE-II and OGLE-III fields toward the Galactic bulge, increasing to 357 objects the OGLE-III catalog of type II Cepheids in the Galactic center. Four of the newly detected RV Tau stars belong to the RVb class, i.e. they show large-amplitude, long-period modulation of the mean luminosity. In the updated catalog, the relative number of RV Tau stars in the whole sample of the Galactic bulge type II Cepheids is similar to the Magellanic Cloud samples.
description: 4 pages, 2 figures
Absolute gravity measurements in Hamburg (Groß Flottbek) at DESY (Deutsches El-ektronen-Synchrotron) with the Hannover gravity meter FG5X-220 in August 2016
Creators: name: Timmen, Ludger
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2017
Subjects: subject: Sinkhole
subject: gravimetry
subject: geo-monitoring
subject: temporal gravity changes
subject: Erdfall
subject: Gravimetrie
subject: Geomonitoring
subject: zeitliche Schwereänderungen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::551 | Geologie, Hydrologie, Meteorologie

description: Integrative geodetic-gravimetric approach for investigating the longterm stability in the sinkhole area of Hamburg-Flottbek.
PSR J1840-1419: A very cool neutron star
Creators: name: Keane, E. F.
name: McLaughlin, M. A.
name: Kramer, M.
name: Stappers, B. W.
name: Bassa, C. G.
name: Purver, M. B.
name: Weltevrede, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present upper limits on the X-ray emission for three neutron stars. For PSR J1840$-$1419, with a characteristic age of 16.5 Myr, we calculate a blackbody temperature upper limit (at 99% confidence) of $kT_{\mathrm{bb}}^{\infty}<24^{+17}_{-10}$ eV, making this one of the coolest neutron stars known. PSRs J1814$-$1744 and J1847$-$0130 are both high magnetic field pulsars, with inferred surface dipole magnetic field strengths of $5.5\times10^{13}$ and $9.4\times10^{13}$ G, respectively. Our temperature upper limits for these stars are $kT_{\mathrm{bb}}^{\infty}<123^{+20}_{-33}$ eV and $kT_{\mathrm{bb}}^{\infty}<115^{+16}_{-33}$ eV, showing that these high magnetic field pulsars are not significantly hotter than those with lower magnetic fields. Finally, we put these limits into context by summarizing all temperature measurements and limits for rotation-driven neutron stars.
description: accepted for publication in ApJ, 5 pages, 1 figure, 1 table
Differential Frequency-dependent Delay from the Pulsar Magnetosphere
Creators: name: Hassall, T. E.
name: Stappers, B. W.
name: Weltevrede, P.
name: Hessels, J. W. T.
name: Alexov, A.
name: Coenen, T.
name: Karastergiou, A.
name: Kramer, M.
name: Keane, E. F.
name: Kondratiev, V. I.
name: van Leeuwen, J.
name: Noutsos, A.
name: Pilia, M.
name: Serylak, M.
name: Sobey, C.
name: Zagkouris, K.
name: Fender, R.
name: Bell, M. E.
name: Broderick, J.
name: Eisloffel, J.
name: Falcke, H.
name: Griessmeier, J. -M.
name: Kuniyoshi, M.
name: Miller-Jones, J. C. A.
name: Wise, M. W.
name: Wucknitz, O.
name: Zarka, P.
name: Asgekar, A.
name: Batejat, F.
name: Bentum, M. J.
name: Bernardi, G.
name: Best, P.
name: Bonafede, A.
name: Breitling, F.
name: Bruggen, M.
name: Butcher, H. R.
name: Ciardi, B.
name: de Gasperin, F.
name: de Reijer, J. -P.
name: Duscha, S.
name: Fallows, R. A.
name: Ferrari, C.
name: Frieswijk, W.
name: Garrett, M. A.
name: Gunst, A. W.
name: Heald, G.
name: Hoeft, M.
name: Juette, E.
name: Maat, P.
name: McKean, J. P.
name: Norden, M. J.
name: Pandey-Pommier, M.
name: Pizzo, R.
name: Polatidis, A. G.
name: Reich, W.
name: Rottgering, H.
name: Sluman, J.
name: Tang, Y.
name: Tasse, C.
name: Vermeulen, R.
name: van Weeren, R. J.
name: Wijnholds, S. J.
name: Yatawatta, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Some radio pulsars show clear drifting subpulses, in which subpulses are seen to drift in pulse longitude in a systematic pattern. Here we examine how the drifting subpulses of PSR B0809+74 evolve with time and observing frequency. We show that the subpulse period (P3) is constant on timescales of days, months and years, and between 14-5100 MHz. Despite this, the shapes of the driftbands change radically with frequency. Previous studies have concluded that, while the subpulses appear to move through the pulse window approximately linearly at low frequencies (< 500 MHz), a discrete step of 180 degrees in subpulse phase is observed at higher frequencies (> 820 MHz) near to the peak of the average pulse profile. We use LOFAR, GMRT, GBT, WSRT and Effelsberg 100-m data to explore the frequency-dependence of this phase step. We show that the size of the subpulse phase step increases gradually, and is observable even at low frequencies. We attribute the subpulse phase step to the presence of two separate driftbands, whose relative arrival times vary with frequency - one driftband arriving 30 pulses earlier at 20 MHz than it does at 1380 MHz, whilst the other arrives simultaneously at all frequencies. The drifting pattern which is observed here cannot be explained by either the rotating carousel model or the surface oscillation model, and could provide new insight into the physical processes happening within the pulsar magnetosphere.
description: 10 pages, 6 figures, accepted for publication in Astronomy and Astrophysics
A Comparison of the Velocity Parameters of SiO v=1, J=1-0 and J=2-1 Maser Emission in Long Period Variables
Creators: name: McIntosh, Gordon
name: Indermuehle, Balthasar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of velocity parameters derived from multi-epoch observations of the SiO maser spectra of 47 long period variables (LPVs). The velocity parameters are important to inform and constrain theoretical models of SiO maser emission and to extract information on binary orbits. Mira and R Aquarii (R Aqr) are two known binaries included in the program. The 47 LPVs are among 121 sources of the Australia Telescope National Facility (ATNF) Mopra telescope's monitoring program. Observations were carried out several times a year between 2008 and 2012 and are continuing. The SiO spectra are from the v=1, J=1-0 (43.122 GHz; hereafter J10) and the v=1, J=2-1 (86.2434 GHz; hereafter J21) transitions. For 41 of the 47 LPVs we observed both transitions nearly simultaneously in 457 observations. We have determined and compared the velocity centroids (VCs) and velocity ranges of emission (VRs) suffixed as above (10 and 21) for the two transitions - VC10, VC21, VR10, and VR21. The VCs of the two transitions are, on average, within 0.13 km s-1 of each other but are sometimes separated by a few km s-1. The VC10s are, on average, slightly more positive than the VC21s. The values of the VCs in the two transitions have been compared to justify using both of these transitions to extract binary star orbital parameters. The arithmetic mean VR10 derived from 635 observations of 47 sources is 6.4 km s-1 with a standard deviation of 3.4 km s-1 while the mean VR21 derived from 485 observations of 41 sources is 4.2 km s-1 with a standard deviation of 2.8 km s-1. The number of occurrences of VR10 and VR21versus velocity range have different distributions. The differences in the VRs indicate that the J21 and J10 emissions arise from dynamically different regions of the circumstellar environment.
description: 4 figures 2 tables. This is an author-created, un-copyedited version of an article accepted for publication in the Astronomical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it
Fundamental material properties of the 2LiBH4-MgH2 reactive hydride composite for hydrogen storage: (I) Thermodynamic and heat transfer properties
Creators: name: Jepsen, Julian
name: Milanese, Chiara
name: Puszkiel, Julian
name: Girella, Alessandro
name: Schiavo, Benedetto
name: Lozano, Gustavo A.
name: Capurso, Giovanni
name: Von Colbe, José M. Bellosta
name: Marini, Amedeo
name: Kabelac, Stephan
name: Dornheim, Martin
name: Klassen, Thomas
Publisher: name: Basel : MDPI AG
Year: 2018
Subjects: subject: Borohydrides
subject: Hydrogen storage
subject: LiBH4/MgH2
subject: Material properties
subject: Metal hydrides
subject: Reactive hydride composites
subject: Differential scanning calorimetry
subject: Heat transfer
subject: Hydrides
subject: Lithium compounds
subject: Magnesium compounds
subject: Materials properties
subject: Specific heat
subject: Thermal conductivity
subject: Calorimetric measurements
subject: Effective thermal conductivity
subject: Heat transfer properties
subject: High pressure differential scanning calorimetries
subject: Transient plane source techniques
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Thermodynamic and heat transfer properties of the 2LiBH4-MgH2 composite (Li-RHC) system are experimentally determined and studied as a basis for the design and development of hydrogen storage tanks. Besides the determination and discussion of the properties, different measurement methods are applied and compared to each other. Regarding thermodynamics, reaction enthalpy and entropy are determined by pressure-concentration-isotherms and coupled manometric-calorimetric measurements. For thermal diffusivity calculation, the specific heat capacity is measured by high-pressure differential scanning calorimetry and the effective thermal conductivity is determined by the transient plane source technique and in situ thermocell. Based on the results obtained from the thermodynamics and the assessment of the heat transfer properties, the reaction mechanism of the Li-RHC and the issues related to the scale-up for larger hydrogen storage systems are discussed in detail.
Temperature and Composition Dependent Optical Properties of CdSe/CdS Dot/Rod-Based Aerogel Networks
Creators: name: Rusch, Pascal
name: Pluta, Denis
name: Lübkemann, Franziska
name: Dorfs, Dirk
name: Zámbó, Dániel
name: Bigall, Nadja C.
Publisher: name: Weinheim : Wiley-VCH
Year: 2021
Subjects: subject: semiconductor nanocrystals
subject: aerogels
subject: low temperature spectroscopy
subject: optical characterization
subject: CdSe/CdS dot/rod
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Employing nanocrystals (NCs) as building blocks of porous aerogel network structures allows the conversion of NC materials into macroscopic solid structures while conserving their unique nanoscopic properties. Understanding the interplay of the network formation and its influence on these properties like size-dependent emission is a key to apply techniques for the fabrication of novel nanocrystal aerogels. In this work, CdSe/CdS dot/rod NCs possessing two different CdSe core sizes were synthesized and converted into porous aerogel network structures. Temperature-dependent steady-state and time-resolved photoluminescence measurements were performed to expand the understanding of the optical and electronic properties of these network structures generated from these two different building blocks and correlate their optical with the structural properties. These investigations reveal the influence of network formation and aerogel production on the network-forming nanocrystals. Based on the two investigated NC building blocks and their aerogel networks, mixed network structures with various ratios of the two building blocks were produced and likewise optically characterized. Since the different building blocks show diverse optical response, this technique presents a straightforward way to color-tune the resulting networks simply by choosing the building block ratio in connection with their quantum yield.
Cosmological Solutions in Biconnection and Bimetric Gravity Theories
Creators: name: Vacaru, Sergiu I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show how generic off--diagonal cosmological solutions depending, in general, on all spacetime coordinates can be constructed in massive gravity using the anholonomic frame deformation method. Such metrics describe the late time acceleration due to effective cosmological terms induced by nonlinear off--diagonal interactions and graviton mass and include matter, graviton mass and other effective sources modelling nonlinear gravitational and matter fields interactions with polarization of physical constants and deformations of metrics, which may explain certain dark energy and dark matter effects.
description: latex ws-procs975x65 proceeding style, 3 pages, summary of a talk at MG13 (Stockholm, 2012), section AT4 Modified Gravity
Synthese von Siderophor-Antibiotika-Konjugaten als neuartige antibakterielle Wirkstoffe
Creators: name: Pinkert, Lukas
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: siderophores
subject: conjugates
subject: antibiotics
subject: Siderophore
subject: Konjugate
subject: Antibiotika
subject: MECAM
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Das anhaltende Auftreten multiresistenter Krankheitserreger stellt die Wissenschaft vor große Herausforderungen. Vor allem gramnegative Bakterien sind hierbei ein bedeutendes Problem, da deren äußere Zellmembran das Eindringen von Antibiotika erschwert. Eine erfolgversprechende Methode zur Überwindung dieser im Vergleich mit grampositiven Bakterien zusätzlichen Barriere stellt die Verwendung von Siderophoren dar. Diese von Bakterien produzierten Moleküle können das essentielle Spurenelement Eisen extrazellulär in ionischer Form komplexieren und werden anschließend aktiv durch die bakteriellen Membranen transportiert. Durch die Kopplung von Antibiotika an Siderophore kann die äußere Membran als Hindernis überwunden und der Transport potenter Antibiotika zum intrazellulären Target gewährleistet werden. Im Zuge dieser Arbeit wurden verschiedene neuartige Siderophore durch computerchemische Methoden charakterisiert und daraufhin synthetisiert. Die dargestellten Siderophore wurden bezüglich Energetik und Struktur erforscht und durch chemische und biologische Assays auf ihre Eignung als Eisentransporter in E. coli hin überprüft. Mit dem hierdurch als geeignetsten künstlichen Siderophor ausgewählten MECAM wurden fünf Wirkstoffkonjugate mit Aminopenicillinen synthetisiert. Diese zeigten sich sowohl gegen verschiedene Stämme von E. coli als auch gegen klinisch relevante, multiresistente Bakterienarten den jeweiligen freien Antibiotika überlegen. So inhibierte das MECAM-Ampicillin-Konjugat 185 E. coli, S. aureus, A. baumannii und E. faecium bereits bei nanomolaren Konzentrationen. Durch die Konjugation mit MECAM konnte zudem die antibiotische Aktivität des nur gegen grampositive Keime wirksamen Antibiotikums Daptomycin auf den gramnegativen Keim A. baumannii erweitert werden. Zuletzt wurden je zwei Konjugate von MECAM und Aminopenicillinen mit Benzimidazolsalzen erzeugt, die Vorläufermoleküle TrxR-hemmender NHC-Gold(I)-Komplexe darstellen. Durch die Konjugation an Siderophore bzw. Antibiotika mit abweichendem Wirkmechanismus sollte die cytotoxische Wirkung dieser Goldkomplexe gemindert werden. Die in dieser Arbeit gewonnen Erkenntnisse unterstreichen die gewichtige Rolle von Siderophor-Wirkstoff-Konjugaten im Kampf gegen Antibiotikaresistenzen und ermutigen zur Nutzung der hier etablierten Siderophorplattform MECAM in zukünftigen Studien.
Equation-of-state insensitive relations after GW170817
Creators: name: Carson, Zack
name: Chatziioannou, Katerina
name: Haster, Carl-Johan
name: Yagi, Kent
name: Yunes, Nicolás
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The thermodynamic relation between pressure and density (i.e. the equation of state) of cold supranuclear matter is critical in describing neutron stars, yet it remains one of the largest uncertainties in nuclear physics. The extraction of tidal deformabilities from the gravitational waves emitted in the coalescence of neutron star binaries, such as GW170817, is a promising tool to probe this thermodynamic relation. Equation-of-state insensitive relations between symmetric and antisymmetric combinations of individual tidal deformabilities, the so-called "binary Love relations", have proven important to infer the radius of neutron stars, and thus constrain the equation of state, from such gravitational waves. A similar set of relations between the moment of inertia, the tidal deformability, the quadrupole moment, and the compactness of neutron stars, the so-called `I-Love-Q' and `C-Love' relations, allow for future tests of General Relativity in the extreme gravity regime. But even the most insensitive of such relations still presents some degree of equation-of-state variability that could introduce systematic uncertainties in parameter extraction and in model selection. We here reduce this variability by more than 50% by imposing a prior on the allowed set of equations of state, derived from the posteriors generated from the analysis of GW170817. The resulting increase in insensitivity reduces systematic uncertainties in the extraction of the tidal deformability from future gravitational wave observations, although statistical uncertainties currently dominate the error budget, and will continue to do so until the era of Voyager-class detectors.
description: 18 pages, 9 figures; minor adjustments and citations added; citation added; fixed Eq. (11) typo; Fixed broken references; Fixed small typo in the fitting parameters; Fixed further typo in Eq.(11); Fixed a typo in Table V
Verständnisentwicklung zum Kohlenstoffkreislauf durch Schulbuchinhalte : Lehr-Lern-Foschung nach dem Modell der Didaktischen Rekonstruktion
Creators: name: Eckebrecht, Detlef
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Textbook understandability
subject: model of educational reconstruction
subject: carbon cycle
subject: Schulbuchverständlichkeit
subject: Modell der didaktischen Rekonstruktion
subject: Kohlenstoffkreislauf
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: [no abstract]
Absolute gravity measurements in the town hall (“Rathaus”) of Bad Frankenhausen with the Hannover gravity meter FG5X-220 in August 2016
Creators: name: Timmen, Ludger
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2017
Subjects: subject: sinkhole
subject: gravimetry
subject: geo-monitoring
subject: temporal gravity changes
subject: Erdfall
subject: Gravimetrie
subject: Geomonitoring
subject: zeitliche Schwereänderungen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Integrative geodetic-gravimetric approach for investigating the longterm stability in the sinkhole area of Hamburg-Flottbek.