cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ultrathin-Layer Structure of BiOI Microspheres Decorated on N-Doped Biochar With Efficient Photocatalytic Activity
Creators: name: Hou, Jianhua
name: Jiang, Ting
name: Wei, Rui
name: Idrees, Faryal
name: Bahnemann, Detlef W.
Publisher: name: Lausanne : Frontiers Media SA
Year: 2019
Subjects: subject: BiOI
subject: microsphere
subject: ultrathin nanosheets
subject: in-situ
subject: self-template
subject: visible-light photocatalysis
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Bismuth oxyiodide (BiOI) is among the most potential photocatalysts due to its photocatalytic activity under visible light irradiation. However, the photoinduced carrier separation efficiency has limited the BiOI photocatalytic activity. Herein, we utilized the direct carbonation of sapless cattail grass to obtain N-doped hierarchical structure cattail-based carbon (NCC). The NCC not only served as an appropriate host but also as a self-sacrificing template for BiOI microspheres for the preparation of BiOI/NCC composite material. The acidic solutions (HCl or AcOH) were used as a solvent which helped to obtain a well-defined micro/nano hierarchical BiOI microspheres composed of ultrathin nanosheets. Thus, BiOI/NCC composites were successfully designed through the in-situ self-template rapid dissolution-recrystallization mechanism. Additionally, numerous well-contacted interfaces were formed between NCC and BiOI, which served as an electron-acceptor bridge function for ultrafast electron transfer process in order to hinder the electron-hole pairs recombination. On account of the multiple synergistic effects of micro/nano hierarchical microsphere structure, ultrathin nanosheets, and well-contacted interface, the as-prepared BiOI/NCC composites exhibit the superior degradation of rhodamine B (RhB) than pure BiOI under visible light irradiation.
Additional file 48 of Evidence for causal effects of polycystic ovary syndrome on oxidative stress: a two-sample mendelian randomisation study
Creators: name: Yifu, Pu
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Supplementary Material 48
Unravelling Ultraslow Lithium-Ion Diffusion in γ-LiAlO2: Experiments with Tracers, Neutrons, and Charge Carriers
Creators: name: Wiedemann, Dennis
name: Nakhali, Suliman
name: Rahn, Johanna
name: Witt, Elena
name: Islam, Mazharul M.
name: Zander, Stefan
name: Heitjans, Paul
name: Schmidt, Harald
name: Bredow, Thomas
name: Wilkening, Martin
name: Lerch, Martin
Publisher: name: Washington D.C. : American Chemical Society
Year: 2016
Subjects: subject: Lithium aluminum oxide
subject: lithium-ion diffusion
subject: crystalline form
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Lithium aluminum oxide (γ-LiAlO2) has been discussed and used for various applications, e.g., as electrode coating, membrane, or tritium breeder material. Although lithium-ion diffusion in this solid is essential for these purposes, it is still not sufficiently understood on the microscopic scale. Herein, we not only summarize and assess the available studies on diffusion in different crystalline forms of γ-LiAlO2, but also complement them with tracer-diffusion experiments on (001)- and conductivity spectroscopy on (100)-oriented single crystals, yielding activation energies of 1.20(5) and 1.12(1) eV, respectively. Scrutinous crystal-chemical considerations, Voronoi–Dirichlet partitioning, and Hirshfeld surface analysis are employed to identify possible diffusion pathways. The one-particle potential, as derived from high-temperature powder neutron diffraction data presented as well, reveals the major path to be strongly curved and to run between adjacent lithium positions with a migration barrier of 0.72(5) eV. This finding is substantiated by comparison with recently published computational results. For the first time, a complete model for lithium-ion diffusion in γ-LiAlO2, consistent with all available data, is presented.
title: To the issue of the application of the general equations of solid equilibrium in constructing a consistent theory of bending plates
Creators: name: Kravchuk, A.S.
name: Kravchuk, A.I.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: Using standard equilibria, a consistent theory of pure plate bending is constructed. Kirchhoff hypotheses were used for deriving the bending equations. It has been established that the transverse load acting on the plate must be nonzero over the entire area of the plate and satisfy Laplace’s equation, i.e. to be harmonious. In this case, the transverse deflections will satisfy the standard biharmonic equation with the zero right-hand side. A number of examples have been solved for bending plates under their own weight.
The Tianlai project: a 21cm cosmology experiment
Creators: name: Chen, Xuelei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In my talk at the 2nd Galileo-Xu Meeting, I presented several different topics in 21cm cosmology for which I have done research. These includes the 21cm signature of the first stars[1,2], the 21cm signal from the IGM and minihalos[3], effect of dark matter annihila- tions on 21cm signal[4], the 21cm forest by ionized/neutral region[5], and the 21cm forest by minihalo and earliest galaxies[6,7]. In this conference proceeding I shall not repeat these discussions, but instead focus on the last part of my talk, i.e. the Tianlai project, an experiment effort on low redshift 21cm intensity mapping observation for dark energy measurements.
description: Conference proceeding article for the 2nd Galileo-Xu meeting, which took place at Ventimiglia at the border of Italy and France in July 2010
Versatile route to core-shell reinforced network nanostructures
Creators: name: Rusch, Pascal
name: Niemeyer, Fabian
name: Pluta, Denis
name: Schremmer, Björn
name: Lübkemann, Franziska
name: Rosebrock, Marina
name: Schäfer, Malte
name: Jahns, Mandy
name: Behrens, Peter
name: Bigall, Nadja C.
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2019
Subjects: subject: core-shell network nanostructures
subject: nanoparticle modification
subject: core network
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: In this work we present the generation of new core–shell network nanostructures of macroscopic dimensionality by a two-step process analogous to the seeded-growth method in colloidal nanoparticle modification. The nanoparticle-based core network is assembled first and in a separate second step it is coated with a continuous metal oxide shell by sol–gel methods. The interparticle contact of the nanoparticles comprising the core network is kept intact throughout the process. By analyzing the local elemental distribution, the shells can be shown to be homogeneous over the macroscopic network monolith. The shell network can be used to considerably reinforce the mechanical strength of the final core–shell network structure.
Variational Methods for the Fractional Sturm--Liouville Problem
Creators: name: Klimek, Malgorzata
name: Odzijewicz, Tatiana
name: Malinowska, Agnieszka B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 26A33, 49R02, 47A75

description: This article is devoted to the regular fractional Sturm--Liouville eigenvalue problem. Applying methods of fractional variational analysis we prove existence of countable set of orthogonal solutions and corresponding eigenvalues. Moreover, we formulate two results showing that the lowest eigenvalue is the minimum value for a certain variational functional.
description: 22 pages
title: Reliability calculation for metallurgical equipment considering the probability of operator’s error
Creators: name: Vishnevskiy, D.A.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: A methodology for calculating the probability of failure-free operation of equipment is given considering the influence of human factor. When assessing the numerical characteristics of the studied parameter, the “fault tree” method was used as an organized graphic display of conditions and other factors causing undesirable event called the peak of events. Using a new methodology for calculating the reliability of equipment, this parameter went down by 37% (considering the human factor), which was the goal of this work.
Niobium nitride-based normal metal-insulator-superconductor tunnel junction microthermometer
Creators: name: Chaudhuri, S.
name: Nevala, M. R.
name: Maasilta, I. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have successfully fabricated micron-scale Cu-AlO$_{x} $-Al-NbN normal metal-insulator-superconductor (NIS) tunnel junction devices, using pulsed laser deposition (PLD) for NbN film growth, and electron-beam lithography and shadow evaporation for the final device fabrication. The subgap conductance of these devices exhibit a strong temperature dependence, rendering them suitable for thermometry from $\sim$ 0.1 K all the way up to the superconducting transition temperature of the NbN layer, which was here $\sim 11$ K, but could be extended up to $\sim 16$ K in our PLD chamber. Our data fits well to the single particle NIS tunnel junction theory, with an observed proximised superconducting gap value $\sim $ 1 meV for a 40 nm thick Al overlayer. Although this high value of the superconducting energy gap is promising for potential electronic NIS cooling applications as well, the high value of the tunneling resistance inhibits electronic cooling in the present devices. Such opaque barriers are, however, ideal for thermometry purposes as self-induced thermal effects are thus minimized.
Additional file 49 of Evidence for causal effects of polycystic ovary syndrome on oxidative stress: a two-sample mendelian randomisation study
Creators: name: Yifu, Pu
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Supplementary Material 49
Virtual Reality Enhances Gait in Cerebral Palsy: A Training Dose-Response Meta-Analysis
Creators: name: Ghai, Shashank
name: Ghai, Ishan
Publisher: name: Lausanne : Frontiers Media
Year: 2019
Subjects: subject: Virtual-reality
subject: gait recovery
subject: training
subject: cerebral palsy
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Virtual-reality-based training can influence gait recovery in children with cerebral palsy. A consensus concerning its influence on spatiotemporal gait parameters and effective training dosage is still warranted. This study analyzes the influence of virtual-reality training (relevant training dosage) on gait recovery in children with cerebral palsy. A search was performed by two reviewers according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines on nine databases: PEDro, EBSCO, PubMed, Cochrane, Web of Science, EMBASE, ICI, Scopus, and PROQUEST. Of 989 records, 16 studies involving a total of 274 children with cerebral palsy met our inclusion criteria. Eighty-eight percent of the studies reported significant enhancements in gait performance after training with virtual reality. Meta-analyses revealed positive effects of virtual-reality training on gait velocity (Hedge's g = 0.68), stride length (0.30), cadence (0.66), and gross motor function measure (0.44). Subgroup analysis reported a training duration of 20–30 min per session, ≤4 times per week across ≥8 weeks to allow maximum enhancements in gait velocity. This study provides preliminary evidence for the beneficial influence of virtual-reality training in gait rehabilitation for children with cerebral palsy.
Additional file 50 of Evidence for causal effects of polycystic ovary syndrome on oxidative stress: a two-sample mendelian randomisation study
Creators: name: Yifu, Pu
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Supplementary Material 50
Fractional quantum Hall states in lattices: Local models and physical implementation
Creators: name: Nielsen, Anne E. B.
name: Sierra, German
name: Cirac, J. Ignacio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The fractional quantum Hall (FQH) effect is one of the most striking phenomena in condensed matter physics. It is described by a simple Laughlin wavefunction and has been thoroughly studied both theoretically and experimentally. In lattice systems, however, such an effect has not been observed, there are few simple models displaying it, and only few mechanisms leading to it are known. Here we propose a new way of constructing lattice Hamiltonians with local interactions and FQH like ground states. In particular, we obtain a spin 1/2 model with a bosonic Laughlin like ground state, displaying a variety of topological features. We also demonstrate how such a model naturally emerges out of a Fermi-Hubbard like model at half filling, in which the kinetic energy part possesses bands with nonzero Chern number, and we show how this model can be implemented in an optical lattice setup with present technology.
description: 7+5 pages, 5+1 figures, v2: references added
Welfare and food security effects of commercializing African indigenous vegetables in Kenya
Creators: name: Krause, Henning
name: Faße, Anja
name: Grote, Ulrike
Publisher: name: Milton Park : Taylor & Francis
Year: 2019
Subjects: subject: Agricultural Economics
subject: Agriculture and Food
subject: Economics and Development
subject: Dewey Decimal Classification::500 | Naturwissenschaften::580 | Pflanzen (Botanik)

description: African indigenous vegetables (AIVs) have high nutritional value, forming a potent weapon against the pressing hidden hunger problem in East Africa, but they are not sufficiently adopted as cash crops by Kenyan small-scale farmers to meet the rising demand in the urban areas. This study therefore aims (i) to explore which factors motivate small-scale farmers to specialize in commercial AIV production and (ii) to assess the impact of AIV production on household income and food security. This analysis was based on primary data from 706 rural and peri-urban small-scale vegetable producers in Kenya. Results of a binary choice model showed that education, participation in producer groups, access to market information and irrigation water, as well as distance to the next city influenced the decision to commercialize AIV production. Impact analysis was conducted with binary and continuous propensity score matching (PSM) and endogenous switching regression (ESR). The production of AIVs as cash crops positively influenced the total per capita household income and the food security status of the households.
Semi-microscopic description of the double backbending in some deformed even-even rare earth nuclei
Creators: name: Budaca, R.
name: Raduta, A. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A semi-microscopic model to study the neutron and proton induced backbending phenomena in some deformed even-even nuclei from the rare earth region, is proposed. The space of particle-core states is defined by the angular momentum projection of a quadrupole deformed product state. The backbending phenomena are described by mixing four rotational bands, defined by a set of angular momentum projected states, and a model Hamiltonian describing a set of paired particles moving in a deformed mean field and interacting with a phenomenological deformed core. The ground band corresponds to the configuration where all particles are paired while the other rotational bands are built on one neutron or/and one proton broken pair. Four rare earth even-even nuclei which present the second anomaly in the observed moments of inertia are successfully treated within the proposed model.
description: 36 pages, 10 figures
title: Investigation of the effect of sliding speed on the coefficient of friction of carbon-containing materials at high temperatures
Creators: name: Roshchin, M.N.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The work is devoted to high-temperature laboratory tribological tests of carbon-containing materials. It was found that at a temperature of 700оC, a load of 0.5 and 1.0 MPa, the coefficient of friction at a speed of 0.05 m / s is less than the coefficient of friction than at a speed of 0.16 m / s by 1.3 times.
New Massive Gravity on de Sitter Space and Black Holes at the Special Point
Creators: name: Gabadadze, Gregory
name: Giribet, Gaston
name: Iglesias, Alberto
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study New Massive Gravity on de Sitter background and discuss several interrelated properties: The appearance of an enhanced symmetry point at linearized level where the theory becomes partially massless; its absence at full nonlinear level, and its relation with the existence of static black hole solutions and their hair parameter.
description: 3 pages. Contribution to the Proceedings of the XIII Marcel Grossmann Meeting, Stockholm, 1-7 July 2012
Traceability of the Hannover FG5X-220 to the SI units
Creators: name: Schilling, Manuel
name: Timmen, Ludger
Publisher: name: Leibniz Universität Hannover
Year: 2015
Subjects: subject: absolute gravimetry
subject: frequency standard
subject: gravimeter comparison
subject: SI units
subject: Absolut Gravimetrie
subject: Frequenzstandard
subject: Gravimetervergleich
subject: SI Einheiten
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The absolute measurement of g is currently realized through the laser interferometric measurement of a free falling retro-reflector. The Micro-g LaCoste FG5X is a free-fall gravimeter with a laser interferometer in Mach-Zehnder configuration which uses simultaneous time and distance measurements to calculate the absolute value of g. Because the instrument itself contains the necessary working standards for precise time and length measurements, it is considered independent of external references. The timing is kept with a 10 MHz rubidium oscillator with a stability of 5×10e−10 . The length unit is realized by the laser interferometer. The frequency calibrated and iodine stabilized helium-neon laser has a wavelength of 633 nm and an accuracy of 2.5×10e−11. In 2012 the FG5-220 of the Institut für Erdmessung (IfE) was upgraded to the FG5X-220. The upgrade included a new dropping chamber with a longer free fall and new electronics including a new rubidium oscillator. The metrological traceability to measurement units of the Système International d’unités (SI unit) is ensured by two complementary and successive approaches: the comparison of frequencies with standards of higher order and the comparison of the measured g to a reference measured by absolute gravimeters defined as primary standards within the SI. A number of experiments to test the rubidium oscillator were performed. The oscillator showed a linear drift of 0.2×10e−3 Hz per month (=0.3 nm/s² per month) in the first 18 months of use. A jump in the frequency of 0.01 Hz (=20 nm/s² ) was revealed recently and the drift rate changed to −0.5×10e−3 Hz /month.
Validation of Phase Center Corrections for new GNSS-Signals obtained with absolute antenna calibration in the field
Creators: name: Breva, Yannick
name: Kröger, Johannes
name: Kersten, Tobias
name: Schön, Steffen
Publisher: name: Leibniz Universität Hannover
Year: 2019
Subjects: subject: GPS/GNSS antennas
subject: GNSS
subject: Geodesy
subject: GNSS receiver antenna calibration
subject: GPS/GNSS-Antennen
subject: Geodäsie
subject: GPS/GNSS-Antennenkalibrierung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: For high accuracy GNSS applications it is necessary to take phase center corrections (PCC) into account. At the moment PCC from chamber calibrations for various signals are available, however GPS L5 as well as Galileo PCC from field calibrations are still missing. The Institut für Erdmessung (IfE) provides PCC patterns in operational mode for IGS and EPN since several decades. Our group is working to develop calibrations of receiver antennas for new GNSS-signals. For the estimation of the PCC for the new signals we use a post-processing approach modelling the PCC by spherical harmonics. First results and the concept are presented by our group. The focus in this contribution is to validate and verify the resulting PCC for GPS L5 as well as Galileo. A closed loop simulation shows that the pattern can be reliably estimated by our approach. For the verification of the results with real data a short baseline common clock set up at the Physikalisch-Technische Bundesanstalt (PTB) is used, where the receivers are linked to an external ultra stable frequency input. We use various antenna combinations and calculate observed-minus-computed (OMC) values to study the impact of PCC on receiver-toreceiver- single differences.With observations from several days, the siderial repetition of GPS L5 PCC is analysed.
Additional file 51 of Evidence for causal effects of polycystic ovary syndrome on oxidative stress: a two-sample mendelian randomisation study
Creators: name: Yifu, Pu
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Supplementary Material 51
The effect of electron--hole scattering on the transport properties of a 2D semimetal in a HgTe quantum well
Creators: name: Entin, M. V.
name: Magarill, L. I.
name: Olshanetsky, E. B.
name: Kvon, Z. D.
name: Mikhailov, N. N.
name: Dvoretsky, S. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The influence of e-h scattering on the conductivity and magnetotransport of 2D semimetallic HgTe is studied both theoretically and experimentally. The presence of e-h scattering leads to the friction between electron and holes resulting in a large temperature-dependent contribution to the transport coefficients. The coefficient of friction between electrons and holes is determined. The comparison of experimental data with the theory shows that the interaction between electrons and holes based on the long - range Coulomb potential strongly underestimates the e-h friction. The experimental results are in agreement with the model of strong short-range e-h interaction.
description: 9 figures
title: The model of powerful earthquakes is the pulse rupture of the circular basalt massif from compression by two forces acting on the same line
Creators: name: Tsvigun, V.N.
name: Koynov, R.S.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: It is described that two simple movements (translational and rotational) are responsible for all movements of the earth's crust, the formation of conflict zones and the occurrence of earthquake epicenters. The kinetic energy of an earthquake occurs when the elastic and gravitational energies are converted into the kinematic motion of the soil, the rotational motion is converted into a translational one. The effect is described as the final stage of an earthquake-the destruction of an elastic accumulator loaded with two opposite forces acting on the same line (scheme of the Brazilian test).
Video Transmission : An Overview of Video Compression and Communication Systems
Creators: name: Samayoa, Yasser
name: Ostermann, Jörn
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: HEVC
subject: Orthogonal Frequency Division Modulation
subject: OFDM
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Poster Presentation at the SVCP 2018
Unsteady Flow in a Labyrinth Seal
Creators: name: Wein, Lars
name: Seume, Joerg R.
name: Herbst, F.
Publisher: name: Zug : Global Power and Propulsion Society
Year: 2018
Subjects: subject: Dewey Decimal Classification::600 | Technik

description: Unsteady flow phenomena in turbomachinery are a source of aerodynamic losses and can adversely affect the durability of an engine. Examples for such flows are the flow through the cavities of the turbine hub or shroud labyrinth and rim seal. The re-entering flow causes mixing losses with the main flow and increases incidence on the following stator. In order to increase the efficiency level of modern gas and steam turbines, an improved understanding of the interaction between the secondary and primary air system is required. Turbulence-resolving numerical methods can provide such insights if the computational domain captures all dominant scales of the flow in time and space. For turbine rim seals, various experimental and numerical studies in the literature report the presence of large scale cavity modes with a periodicity of up to 120◦ in the circumferential direction. For turbine shroud cavities such modes have not yet been observed. In this paper the time-resolved flow in the cavities of a stepped labyrinth seal is investigated. The aim is to identify the largest scales of the flow which determines the required size of the computational domain for scale-resolving simulations. A small CFD domain of 1◦ circumferential extent leads to an incorrect prediction of the frequencies associated to leakage pulsation. This domain cannot resolve the largest scales present in full annulus CFD models. The largest scales, referred to as lobes, have a periodicity of 12◦ in the circumferential direction. As experimentally shown for turbine rim seals, these lobes are moving in the direction of rotation with 0.76ΩRotor. The frequency of leakage pulsation is higher then the frequency of the lobes and its dependence on the periodic boundary conditions is weaker. Furthermore, the presence and the frequency of the lobes depends on the seal pressure ratio and the pre-swirl of the flow.
Zeta functions of pseudodifferential operators and Fourier integral operators on manifolds with boundary
Creators: name: Battisti, Ubertino
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2012
Subjects: subject: Spectral zeta function
subject: Fourier integral operators
subject: Boutet de Monvel's calculus
subject: Spektrale Zetafunktion
subject: Fourierintegraloperatoren
subject: Kalkül von Boutet de Monvel
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
Entropic uncertainty relation for pointer-based simultaneous measurements of conjugate observables
Creators: name: Heese, Raoul
name: Freyberger, Matthias
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a family of entropic uncertainty relations for pointer-based simultaneous measurements of conjugate observables. The lower bounds of these relations explicitly incorporate the influence of the measurement apparatus. We achieve this by using a mathematical theorem which states that the information entropy of convoluted probability distributions is bound from below. As a consequence of these results we can straightforwardly show that appropriately squeezed states are minimal entropy states for simultaneous measurements.
Zeolite and metal-organic framework membranes for pervaporation and gas separation
Creators: name: Wang, Nanyi
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Zeolite membrane
subject: MOF membrane
subject: gas separation
subject: pervaporation
subject: ion-exchange
subject: pre- and post-modification method
subject: Zeolithe-Membranen
subject: MOF-Membranen
subject: Gastrennung
subject: Ionenaustausch
subject: Pre- und Post-Funktionalisierung
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
Production of $J/Ψ$ on the nucleon and deuteron targets
Creators: name: Wu, Jia-Jun
name: Lee, T. -S. H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A coupled-channel model with $πN$, $ρN$ and $J/ΨN$ channels is developed to predict the $π+ N \rightarrow J/Ψ+ N $ cross sections. The $J/Ψ$-$N$ interaction is parameterized in a form related to what has been predicted by the effective field theory approach and Lattice QCD. The other interactions within the model are constrained by the decay width of $J/Ψ\rightarrow ρ+ π$ and the total cross section data of $πN$ reactions. The calculated meson-baryon amplitudes are then used to predict the cross sections of the $J/Ψ$ production on the deuteron target by including the contributions from the impulse term and the one-loop calculations of the final $NN$ and $J/ΨN$ re-scattering effects. Predictions of the dependence of the cross sections of $π^- + p \rightarrow J/Ψ+ n$, $γ+ d \rightarrow J/Ψ+ n + p$, and $π^+ d \rightarrow J/Ψ+p +p$ on the $J/Ψ$-$N$ potentials are presented for experimental determinations of the $J/Ψ$-$N$ interaction. Within the vector meson dominance model, we have also applied the constructed coupled-channel model to predict the $γ+ p\rightarrow J/Ψ+ p$ cross sections near the $J/Ψ$ production threshold.
description: 21 pages, 12 figures
Polarization of cluster radio halos with upcoming radio interferometers
Creators: name: Govoni, F.
name: Murgia, M.
name: Xu, H.
name: Li, H.
name: Norman, M. L.
name: Feretti, L.
name: Giovannini, G.
name: Vacca, V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Synchrotron radio halos at the center of merging galaxy clusters provide the most spectacular and direct evidence of the presence of relativistic particles and magnetic fields associated with the intracluster medium. The study of polarized emission from radio halos has been shown to be extremely important to constrain the properties of intracluster magnetic fields. However, detecting this polarized signal is a very hard task with the current radio facilities.We investigate whether future radio observatories, such as the Square Kilometer Array (SKA) and its precursors and pathfinders, will be able to detect the polarized emission of radio halos in galaxy clusters.On the basis of cosmological magnetohydrodynamical simulations with initial magnetic fields injected by active galactic nuclei, we predict the expected radio halo polarized signal at 1.4 GHz. We compare these expectations with the limits of current radio facilities and explore the potential of the forthcoming radio interferometers to investigate intracluster magnetic fields through the detection of polarized emission from radio halos.The resolution and sensitivity values that are expected to be obtained in future sky surveys performed at 1.4 GHz using the SKA precursors and pathfinders (like APERTIF and ASKAP) are very promising for the detection of the polarized emission of the most powerful (L1.4GHz>10e25 Watt/Hz) radio halos. Furthermore, the JVLA have the potential to already detect polarized emission from strong radio halos, at a relatively low resolution.However, the possibility of detecting the polarized signal in fainter radio halos (L1.4GHz~10e24 Watt/Hz) at high resolution requires a sensitivity reachable only with SKA.
description: Accepted by Astronomy and Astrophysics, 13 pages, 8 figures
title: Quicker and safer tsunami evacuations through agent-based modelling
Creators: name: Power, William L
name: Boersen, K
name: Thomas, Kristie-Lee
name: Tilley, L
name: Hudson-Doyle, Emma E
name: Kaiser, Lucy C
name: Lukovic, Biljana
name: Heron, David W
name: Wilson, T M
name: Leonard, Graham S
name: Johnston, David M
Publisher: name: GNS Science
Year: 2019

description: All of Aotearoa New Zealand’s coastline is at risk of tsunami from local sources, those that reach the coast in less than one hour. Some areas in New Zealand are particularly vulnerable to tsunami, given the long distances to safety, and if a tsunami were to occur there may be large numbers of casualties. The primary means for saving lives is to educate the public to immediately self-evacuate tsunami-prone areas if they feel a long or strong earthquake: “Long or strong, get gone!”. In densely populated urban areas, Civil Defence and Emergency Management (CDEM) encourage people to evacuate on foot if they can. Mass evacuations pose many problems, as typically the urban infrastructure is not designed to handle such large volumes of pedestrians. In rural areas, these problems can be identified using ‘tsunami evacuation hīkoi’ exercises, where the community evacuates as if a large earthquake has occurred. This is not practical in towns and cities with thousands of residents or workers, and therefore modelling can be used to evaluate evacuation routes. In this project we have developed a computer model of people evacuating on foot and have applied this model to Petone (Lower Hutt), Napier, and Sumner (Christchurch). In each of these locations, two community workshops were held to receive feedback from the public about how to improve the models and improve evacuation speed and safety. Ideas received from the public and discussions with local CDEM representatives were used to produce recommendations to make tsunami evacuations quicker and safer in the future. Final results have been presented back to the communities in Petone and Napier (Sumner still pending). (auth)
Zeatin- and polyamine-induced nitric oxide biosynthesis in Arabidopsis thaliana seedlings and its role in signal transduction
Creators: name: Tun Krywen, Ni Ni
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Nitric oxide
subject: cytokinin
subject: polyamines
subject: Arabidopsis
subject: signal transduction
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Arpád Dobó, Inscriptiones ad res Pannonicas pertinentes extra provinciae fines repertae
Creators: name: Betz, Artur
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: Rezension zu: Arpád Dobó, Inscriptiones ad res Pannonicas pertinentes extra provinciae fines repertae. Dissertationes Pannonicae ex Instituto Numismatico et Archaeologico Universi-
tatis a Petro Päzmäny nominatae Budapestinensis provenientes. Series 1. Fasc. 1.
Budapest 1932, Königl. ungar. Universitätsbuchdruckerei. 27 S.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 18, Nr. 1 (1934)
Observation of CP violation in $D^0 \rightarrow K^- π^+ $ as a smoking gun for New Physics
Creators: name: Delepine, David
name: Faisel, Gaber
name: Ramirez, Carlos A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we study the Cabibbo favored non-leptonic $D^0$ decays into $K^- π^+$ decays. First we show that, within the Standard Model, the corresponding CP asymmetry is strongly suppressed and out of the experimental range even taking into account the large strong phases coming from final state Interactions. We show also that although new physics models with extra sequential generation can enhance the CP asymmetry by few orders of magnitude however the resulting CP asymmetry is still far from experimental range. The most sensitive New Physics Models to this CP asymmetry comes from no-manifest Left-Right models where a CP asymmetry up to 10% can be reached and general two Higgs models extension of SM where a CP asymmetry of order $10^{-2}$ can be obtained without being in contradiction with the experimental constraints on these models.
description: 33 pages, 5 figures
Noninvasive detection of charge rearrangement in a quantum dot
Creators: name: Fricke, Christian
name: Rogge, M.C.
name: Harke, B.
name: Reinwald, M.
name: Wegscheider, W.
name: Hohls, Frank
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2007
Subjects: subject: Landau shells
subject: Magnetic field
subject: Quantum dot
subject: Quantum point contact
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We demonstrate new results on electron redistribution on a single quantum dot caused by magnetic field. A quantum point contact is used to detect changes in the quantum dot charge. We are able to measure both the change of the quantum dot charge and also changes of the electron configuration at constant number of electrons on the quantum dot. These features are used to exploit the quantum dot in a high magnetic field where transport through the quantum dot displays the effects of Landau shells and spin blockade. © 2007 American Institute of Physics.
Additional file 1 of A single preoperative low-dose dexamethasone may reduce the incidence and severity of postoperative delirium in the geriatric intertrochanteric fracture patients with internal fixation surgery: an exploratory analysis of a randomized, placebo-controlled trial
Creators: name: Huang, Jian-wen
name: Yang, Yun-fa
name: Gao, Xiao-sheng
name: Xu, Zhong-he
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Computational Biology

description: Additional file 1. The ERAS procedure, Diagnostic criteria of safety-related outcomes, and Postoperative adverse events during hospitalization.
Superconductor-normal metal quantum phase transition in dissipative and non-equilibrium systems
Creators: name: Deus, Fernanda
name: Continentino, Mucio A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In physical systems, coupling to the environment gives rise to dissipation and decoherence. For nanoscopic materials this may be a determining factor of their physical behavior. However, even for macroscopic many-body systems, if the strength of this coupling is sufficiently strong, their ground state properties and phase diagram may be severely modified. Also dissipation is essential to allow a system in the presence of a time dependent perturbation to attain a steady, time independent state. In this case, the non-equilibrium phase diagram depends on the intensity of the perturbation and on the strength of the coupling of the system to the outside world. In this paper, we investigate the effects of both, dissipation and time dependent external sources in the phase diagram of a many-body system at zero and finite temperatures. For concreteness we consider the specific case of a superconducting layer under the action of an electric field and coupled to a metallic substrate. The former arises from a time dependent vector potential minimally coupled to the electrons in the layer. We introduce a Keldysh approach that allows to obtain the time dependence of the superconducting order parameter in an adiabatic regime. We study the phase diagram of this system as a function of the electric field, the coupling to the metallic substrate and temperature.
title: Experimental evaluation of the of off-load power losses distribution between the structural mechanisms the continuously variable transmission named after Blagonravov
Creators: name: Yurkevich, A.V.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: For a new type of mechanical continuously variable transmission with internal power function no-load power losses are experimentally determined. Their distribution between structural mechanisms of transfer is estimated. The maximum total off – load losses do not exceed 5-7% of the supplied power. The ways of improving the design are determined. The results can be used in the calculations of external and partial characteristics of the transmission.
Dynamics of the fast component of nano-confined water under electric field
Creators: name: Diallo, S. O.
name: Mamontov, E.
name: Podlesnyak, A.
name: Ehlers, G.
name: Wada, N.
name: Inagaki, S.
name: Fukushima, Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report the diffusion of water molecules confined in the pores of folded silica materials (FSM-12 with average pore diameter of $\sim$ 16 Å), measured by means of quasielastic neutron scattering using the cold neutron chopper spectrometer (CNCS). The goal is to investigate the effect of electric field on the previously observed fast component of nano-confined water. The measurements were taken at temperatures between 220 K and 245 K, and at two electric field values, 0 kV/mm and 2 kV/mm. Similar to the recently observed electric field induced enhancement of the slow translational motion of confined water, there is a an equally important impact of the field on the faster diffusion.
description: 6 pages, 4 figures and one table, to appear in the QENS/WINS proceedings as a special edition of Japanese Journal Physics Society (2013)
Ion mobility spectrometer with orthogonal X-Ray source for increased sensitivity
Creators: name: Bunert, Erik
name: Reinecke, Tobias
name: Kirk, Ansgar T.
name: Bohnhorst, Alexander
name: Zimmermann, Stefan
Publisher: name: Amsterdam : Elsevier
Year: 2018
Subjects: subject: Ion Mobility Spectrometry
subject: X-ray IMS
subject: Orthogonal X-ray source
subject: X-ray ionization
subject: Non-radioactive ionization source
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Ion mobility spectrometers (IMS) are compact devices for extremely sensitive detection of proton and electron affine volatile compounds down to low pptv concentrations within less than a second. The measuring principle requires ionization of the target analyte. Most IMS employ radioactive electron sources, such as 63Ni or 3H. These radioactive materials suffer from legal restrictions limiting the fields of application. Furthermore, the electron emission has a predetermined intensity and cannot be controlled or disabled. In a previous work, we replaced the axially mounted 3H source of our ion mobility spectrometer with a commercially available X-ray source operated at low acceleration voltage of 4.5 kV to be applicable in most application without legal restrictions. However, the high penetration depth of the radiation together with the statistical behavior of the X-ray ionization process led to an increase of Fano noise and thus a limited signal-to-noise ratio. Therefore, the X-ray source is now mounted orthogonal to the drift tube in order to avoid Fano noise. Here, we compare the analytical performance of this orthogonal setup with the axially mounted X-ray source. The noise level is significantly reduced. This improves the signal-to-noise ratio from 700 with the axially placed source to more than 3000 with the orthogonally placed source, while the resolving power still remains at R = 100. Furthermore, typical limits of detection for some model substances in the low pptv range in positive and negative ion mode are given.
Quasiuniversal connectedness percolation of polydisperse rod systems
Creators: name: Nigro, Biagio
name: Grimaldi, Claudio
name: Ryser, Peter
name: Chatterjee, Avik P.
name: van der Schoot, Paul
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The connectedness percolation threshold (eta_c) and critical coordination number (Z_c) of systems of penetrable spherocylinders characterized by a length polydispersity are studied by way of Monte Carlo simulations for several aspect ratio distributions. We find that (i) η_c is a nearly universal function of the weight-averaged aspect ratio, with an approximate inverse dependence that extends to aspect ratios that are well below the slender rod limit and (ii) that percolation of impenetrable spherocylinders displays a similar quasiuniversal behavior. For systems with a sufficiently high degree of polydispersity, we find that Z_c can become smaller than unity, in analogy with observations reported for generalized and complex networks.
description: 5 pages with 3 figures + 2 pages and 4 figures of supplemental material