cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Dynamics and Scaling Laws of Planetary Dynamos Driven by Inertial Waves
Creators: name: Davidson, P A
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The numerical simulations of planetary dynamos still operate in a regime very far from the planets. For example, it seems unlikely that viscous forces are at all significant in planetary interiors, yet some of the simulations display a significant dependence on viscosity, and indeed in some of the simulations the dynamo mechanism is itself viscously driven, taking the form of helical Ekman pumping within columnar convection rolls. Given the similarity of the external magnetic fields observed in the terrestrial planets and gas giants, and the extremely small value of the Ekman number in all such cases, it seems natural to suppose that the underlying dynamo mechanism in these planets is independent of viscosity and insensitive to mechanical boundary conditions. A key step to identifying this mechanism is to determine the source of helicity in planetary cores. In this paper we explore the possibility that the helicity in the core of the Earth arises from the spontaneous emission of inertial waves, driven by the equatorial heat flux in the outer core.
description: 29 pages
Structure and composition of the superconducting phase in alkali iron selenide K$_y$Fe$_{1.6+x}$Se$_2$
Creators: name: Carr, Scott V
name: Louca, Despina
name: Siewenie, Joan
name: Huang, Q.
name: Wang, Aifeng
name: Chen, Xianhui
name: Dai, Pengcheng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We use neutron diffraction to study the temperature evolution of the average structure and local lattice distortions in insulating and superconducting potassium iron selenide K$_y$Fe$_{1.6+x}$Se$_2$. In the high temperature paramagnetic state, both materials have a single phase with crystal structure similar to that of the BaFe$_2$As$_2$ family of iron pnictides. While the insulating K$_y$Fe$_{1.6+x}$Se$_2$ forms a $\sqrt{5}\times\sqrt{5}$ iron vacancy ordered block antiferromagnetic (AF) structure at low-temperature, the superconducting compounds spontaneously phase separate into an insulating part with $\sqrt{5}\times\sqrt{5}$ iron vacancy order and a superconducting phase with chemical composition of K$_z$Fe$_{2}$Se$_2$ and BaFe$_2$As$_2$ structure. Therefore, superconductivity in alkaline iron selenides arises from alkali deficient K$_z$Fe$_{2}$Se$_2$ in the matrix of the insulating block AF phase.
description: 10 pages, 5 figures
The Galactic Bulge Survey: completion of the X-ray survey observations
Creators: name: Jonker, Peter G.
name: Torres, Manuel A. P.
name: Hynes, Robert I.
name: Maccarone, Thomas J.
name: Steeghs, Danny
name: Greiss, Sandra
name: Britt, Christopher T.
name: Wu, Jianfeng
name: Johnson, Christopher B.
name: Nelemans, Gijs
name: Heinke, Craig
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We provide the Chandra source list for the last ~quarter of the area covered by the Galactic Bulge Survey (GBS). The GBS targets two strips of 6\degr x 1\degr (12 square degrees in total), one above (1\degr
description: 10 pages, 5 figures, accepted for publication by ApJS. arXiv admin note: text overlap with arXiv:1103.1486
The Extraordinary Glow
Creators: name: Liao, Jinfeng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this contribution I discuss some recent progress in understanding the evolution of the pre-thermal quark-gluon matter, known as the glasma, during the early stage in heavy ion collisions, and the implication for early time photon and dilepton emissions.
description: 16 pages, 4 figures, contribution to a special issue of Nucl. Phys. A in memory of Gerald E. Brown
Mathematikdidaktische Schwerpunkte als Orientierungsgrundlage
Creators: name: Florian, Lena
name: Gebel, Inga
Publisher: name: Zenodo
Year: 2020
Subjects: Didaktische Schwerpunkte
Math Education
OER
Open Access
Lesson Planning
Unterrichtsplanung
Mathematikdidaktik
Teacher Training
Lehramtsausbildung
Hochschullehre
Referendariat
Fachdidaktik

description: "Didaktische Schwerpunktsetzungen" dienen dazu, die Komplexität pädagogischer und didaktischer Theorien und Modelle zu verdichten und bieten eine wichtige Orientierungsgrundlage für Planungsentscheidungen im Unterricht. Sie ermöglichen es angehenden Lehrkräften, theoretische Grundlagen mit ihrer praktischen Ausbildung zu verbinden. Durch die begriffliche Unschärfe und den hohen Allgemeinheitsgrad ist die Wahl eines fachspezifischen didaktischen Schwerpunktes innerhalb der Unterrichtsplanung für viele eine große Herausforderung. Aus diesem Grund haben wir im Rahmen einer Handreichung eine Begriffseinschränkung vorgenommen und einen Katalog mathematikdidaktischer Schwerpunktsetzungen entworfen. Wir möchten andere Fachbereiche ermutigen, den Katalog fachspezifisch weiter zu entwickeln.
title: Construction of a DC Current Injection Generator for HVDC Long-Term Tests up to 5000 A DC at 660 KV DC Potential
Creators: name: Hallas, Martin
name: Wietoska, Thomas
name: Hinrichsen, Volker
Publisher: name: Springer
Year: 2019

description: HVDC components have to be tested with current and voltage simultaneously to test space and surface charge effects adequately. The DC current injection at high voltage potential is the best choice to test these effects on HVDC components according to their later operation in the grid. No commercial generators to solve this task are available. The capacitive current injection is a reasonable concept for DC current injection, since high current and high voltage ratings by stacking of several components can be achieved. It consists of a feeding unit, the transmission path and the rectifier at high voltage potential. The contribution shows, how the generator components can be built and which technical parameters are required inside the generator. The overall goal of the project is the upscaling of the concept up to 5000 A DC current on a high DC voltage potential of 660 kV. Challenges and solutions during the design phase of the upscaled generator are discussed. Pictures of the generator components are shown, as well as first experiences with the upscaled generator. The contribution demonstrates that this generator concept for DC current injection at high voltage potential is technically feasible for high equipment ratings.
Study on the novel neutron-to-proton concept for improving the detection efficiency of triple GEM based fast neutron detector
Creators: name: Wang, Xiao-Dong
name: Yang, He-Run
name: Ren, Zhong-Guo
name: Zhang, Jun-Wei
name: Yang, Lei
name: Zhang, Chun-Hui
name: Ha, Ri-Ba-La
name: An, Lv-Xing
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A high-efficiency fast neutron detector prototype based on a triple Gas Electron Multiplier (GEM) detector, which coupled with a novel multi-layered High-Density PolyEthylene (HDPE) as a neutron-to-proton converter for improving the neutron detection efficiency, is introduced and tested with the Am-Be neutron source in Institute of Modern Physics (IMP) at Lanzhou in present work. Firstly, the developed triple GEM detector is tested by measuring its effective gain and energy resolution with $^{55}$Fe X-ray source to ensure that it has a good performance. The effective gain and obtained energy resolution is 5.0$\times$10$^{4}$ and around of 19.2\%, respectively. And secondly, the novel multi-layered HDPE converter is coupled with the cathode of the triple GEM detector make it a high-effective fast neutron detector. And its effective neutron response is four times higher than that of the traditional single-layered conversion technique when the converter layer number is 38.
description: 6 pages, 8 figures
Participation spectroscopy and entanglement Hamiltonian of quantum spin models
Creators: name: Luitz, David J.
name: Laflorencie, Nicolas
name: Alet, Fabien
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Shannon-Rényi entropies and associated participation spectra quantify how much a many-body wave-function is localized in a given configuration basis. Using these tools, we present an analysis of the ground-state wave functions of various quantum spin systems in one and two dimensions. General ideas and a review of the current status of this field are first given, with a particular emphasis on universal subleading terms characterizing different quantum phases of matter, and associated transitions. We highlight the connection with the related entanglement entropies and spectra when this is possible. In a second part, new results are presented for the participation spectra of interacting spin models, mostly based on quantum Monte Carlo simulations, but also using perturbation theory in some cases. For full antiferromagnetic systems, participation spectra are analyzed in terms of ferromagnetic domain walls which experience a repulsive pairwise interaction. This confinement potential is either linear for long-range Néel order, or logarithmic for quasi-long-range order. The case of subsystems is also analyzed in great detail for a 2d dimerized Heisenberg model undergoing a quantum phase transition between a gapped paramagnet and a Néel phase. Participation spectra of line shaped (1d) sub-systems are quantitatively compared with finite temperature participation spectra of ansatz effective boundary (1d) entanglement Hamiltonians. While short-range models describe almost perfectly the gapped side, the Néel regime is best compared using long-range effective Hamiltonians. Spectral comparisons performed using Kullback-Leibler divergences, a tool potentially useful for entanglement spectra, provide a quantitative way to identify both the best boundary entanglement Hamiltonian and temperature.
description: 39 pages, 13 figures
Talking at Cross- Purpose? ASOS, Twitter and the Fast-Fashion Backlash
Creators: name: Balabanova, Ekaterina
name: Palmieri, Rudi
Publisher: name: figshare
Year: 2020
Subjects: subject: 200101 Communication Studies
subject: FOS: Media and communications

description: This report is the result of research into the Twitter debate over ethics and sustainability in fashion. The goal of the research was to explore whether and how the platform can become an opportunity for dialogue, supporting a more productive and collaborative approach to discussions about ethics and sustainability in the sector.
A distant radio mini-halo in the Phoenix galaxy cluster
Creators: name: van Weeren, R. J.
name: Intema, H. T.
name: Lal, D. V.
name: Andrade-Santos, F.
name: Brüggen, M.
name: de Gasperin, F.
name: Forman, W. R.
name: Hoeft, M.
name: Jones, C.
name: Nuza, S. E.
name: Röttgering, H. J. A.
name: Stroe, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of extended radio emission in the Phoenix cluster (SPT-CL J2344-4243, z=0.596) with the GMRT at 610 MHz. The diffuse emission extends over a region of at least 400-500 kpc and surrounds the central radio source of the Brightest Cluster Galaxy, but does not appear to be directly associated with it. We classify the diffuse emission as a radio mini-halo, making it the currently most distant mini-halo known. Radio mini-halos have been explained by synchrotron emitting particles re-accelerated via turbulence, possibly induced by gas sloshing generated from a minor merger event. Chandra observations show a non-concentric X-ray surface brightness distribution, which is consistent with this sloshing interpretation. The mini-halo has a flux density of $17\pm5$ mJy, resulting in a 1.4 GHz radio power of ($10.4\pm3.5) \times 10^{24}$ W Hz$^{-1}$. The combined cluster emission, which includes the central compact radio source, is also detected in a shallow GMRT 156 MHz observation and together with the 610 MHz data we compute a spectral index of $-0.84\pm0.12$ for the overall cluster radio emission. Given that mini-halos typically have steeper radio spectra than cluster radio galaxies, this spectral index should be taken as an upper limit for the mini-halo.
description: 5 pages, 2 figures, 1 table. Accepted for publication in ApJL
NOTES: Hedgerley Roman pottery kiln; Radnage Church wall paintings fund; The Eyre brasses in Burnham Church; Half-day excursion: Langley Marish and Stoke Poges; Remains of a Tudor mural painting found at Long Crendon
Creators: name: Reader, Francis W
Publisher: name: Archaeology Data Service
Year: 2023

description: Records of Buckinghamshire, 13 (2), 143-148
Europe meets China - User Advisory Group & Stakeholder Mirror Group Inception meeting
Creators: name: Biaz, Lamiaa
name: Jin, Jiali
name: De Vreese, Rik
Publisher: name: Zenodo
Year: 2020
Subjects: Urban forests
nature-based solutions
user involvement
co-design

description: The User Advisory Group and the Stakeholder Mirror Group convene stakeholder associations and key users of CLEARING HOUSE tools.
NOTES: Inscription to the memory of a heart in the church at Weston Underwood; Relic of an ancient mansion at Chicheley; St Mary's Church, Chesham - Memorials to the late Reverend A F Aylward
Creators: name: Jeudwine, W
Publisher: name: Archaeology Data Service
Year: 2023

description: Records of Buckinghamshire, 4 (6), 331-333
Ground State Quantum Coherences: from Quantum Beats to Strong Control
Creators: name: Cimmarusti, Andres D.
name: Patterson, Burkley D.
name: Orozco, Luis A.
name: Pimenta, Wanderson M.
name: Barberis-Blostein, Pablo
name: Carmichael, Howard J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Second order correlations reveal quantum beats from a coherent ground-state superposition on the undriven mode of a two-mode cavity QED system. Continuous drive induces decoherence due to Rayleigh scattering. We control this with feedback and explore postselection techniques to extract specific behavior.
description: 13 pages, 5 figures, Coherence and Quantum Optics X (CQOX) and Quantum Information and Measurement meeting (QIM2). arXiv admin note: text overlap with arXiv:1301.3000
Bacterial and Fungal Load of termites
Creators: name: Ifeoma Enweani
Publisher: name: figshare
Year: 2020
Subjects: subject: 60501 Bacteriology
subject: FOS: Biological sciences

description: Termites are cellulose eating social insects belonging to the other Isoptera. The microbial load of termites collected from residential premises in Ekpoma and Jos in a traditional method was carried out using serial dilution method of the homogenates. The bacterial isolates from the fresh (raw) termites were Stapylococcus epidermidis, Streptococcus faecalis, Klebsiella aerogenes, Bacillus cereus, Proteus mirabilis and Bacteriodes corrondens. The roasted termites had only Stapylococcus epidermidis, Streptococcus faecalis and Bacteriodes corrondens isolated from them. The mean total viable bacterial count for fresh (raw) and roasted termites is 9.16 x 102 cfu/g and 6.66 x 102 cfu/g respectively. The fungal isolates from the fresh termites included Aspergillus fumigatus, Candida pseudotropicalis, Botrytis sp and Cladosporium sp. Aspergillus fumigatus was the only fungal isolate from roasted termites. The mean total viable count for fungal isolates for both fresh and roasted samples was 3.38 X 101 cfu/g and 1.34 X 101 cfu/g respectively.
Chemical Composition of the Atmospheres of Red Giants with High Space Velocities
Creators: name: Pakhomov, Yu. V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The results of a comparative analysis of the elemental abundances in the atmospheres of 14 red giants with high Galactic space velocities are presented. For almost all of the chemical elements considered, the their abundance trends with metallicity correspond to those constructed for thick-disk dwarfs. In the case of sodium, the main factor affecting the [Na/Fe] abundance in the stellar atmosphere for red giants is the surface gravity that characterizes the degree of development of the convective envelope. The difference between the [Na/Fe] abundances in the atmospheres of thin-and thick-disk red giants has been confirmed.
description: 11 pages, 3 figures. arXiv admin note: text overlap with arXiv:1311.5040
The quiescent counterpart of the peculiar X-ray burster SAX J2224.9+5421
Creators: name: Degenaar, N.
name: Wijnands, R.
name: Miller, J. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: SAX J2224.9+5421 is an extraordinary neutron star low-mass X-ray binary. Albeit discovered when it exhibited a ~10-s long thermonuclear X-ray burst, it had faded to a 0.5-10 keV luminosity of Lx<8E32 (D/7.1 kpc)^2 erg/s only ~8 hr later. It is generally assumed that neutron stars are quiescent (i.e., not accreting) at such an intensity, raising questions about the trigger conditions of the X-ray burst and the origin of the faint persistent emission. We report on a ~51 ks XMM-Newton observation aimed to find clues explaining the unusual behavior of SAX J2224.9+5421. We identify a likely counterpart that is detected at Lx~5E31 (D/7.1 kpc)^2 erg/s (0.5-10 keV) and has a soft X-ray spectrum that can be described by a neutron star atmosphere model with a temperature of ~50 eV. This would suggest that SAX J2224.9+5421 is a transient source that was in quiescence during our XMM-Newton observation and experienced a very faint (ceasing) accretion outburst at the time of the X-ray burst detection. We consider one other potential counterpart that is detected at Lx~5E32 (D/7.1 kpc)^2 erg/s and displays an X-ray spectrum that is best described by power law with a photon index of ~1.7. Similarly hard X-ray spectra are seen for a few quiescent neutron stars and may be indicative of a relatively strong magnetic field or the occurrence of low-level accretion.
description: 7 pages, 2 figures, 2 tables. Accepted to ApJ
Pretrained model for segmentation of craniomaxillofacial CT scans with nnU-Net
Creators: name: Dot, Gauthier
name: Schouman, Thomas
name: Dubois, Guillaume
name: Rouch, Philippe
name: Gajny, Laurent
Publisher: name: Zenodo
Year: 2023
Subjects: nnu-net
orthognathic surgery
orthodontics
semantic segmentation

description: This repository contains the trained network parameters for the segmentation of craniomaxillofacial CT scans with nnU-Net v1 (3D full-res, 5 folds). 453 consecutive patients having undergone high-resolution CT scans before orthognathic surgery were randomly distributed among a training/validation cohort (n = 300) and a testing cohort (n = 153). The evaluation of this model has been published here: Fully automatic segmentation of craniomaxillofacial CT scans for computer-assisted orthognathic surgery planning using the nnU-Net framework. Please cite the paper if you use this model for your research : Dot G, Schouman T, Dubois G, Rouch P, Gajny L. 2022. Fully automatic segmentation of craniomaxillofacial CT scans for computer-assisted orthognathic surgery planning using the nnU-Net framework. Eur Radiol. 32(6):3639–3648. Label numbers correspond to the following classes (please refer to the publication for more details) : upper skull mandible upper teeth lower teeth mandibular canal Instructions for how to use the model are provided at: https://github.com/MIC-DKFZ/nnUNet. Be careful to use nnunet_v1, as nnunet_v2 is not supported at the moment.
Reference Vectors in Economic Choice
Creators: name: Goucha, Teycir Abdelghani
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Finance (q-fin.GN)
subject: FOS: Economics and business
subject: 91B42, 91B08, 91B50

description: In this paper the introduction of notion of reference vector paves the way for a combination of classical and social approaches in the framework of referential preferences given by matrix groups. It is shown that individual demand issue from rational decision does not depend on that reference.
Integrability properties of Kahan's method
Creators: name: Celledoni, Elena
name: McLachlan, Robert I
name: McLaren, David I
name: Owren, Brynjulf
name: Quispel, G R W
Publisher: name: arXiv
Year: 2014
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present several novel examples of integrable quadratic vector fields for which Kahan's discretization method preserves integrability. Our examples include generalized Suslov and Ishii systems, Nambu systems, Riccati systems, and the first Painlevé equation. We also discuss how Manin transformations arise in Kahan discretizations of certain vector fields.
Towards a political anthropology of the "managerial turn" within art and design schools in Europe
Creators: name: Blumer, Stéphane
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 440107
subject: Social and cultural anthropology
classificationCode: 440404
subject: Political economy and social change
classificationCode: 360103
subject: Art theory

description: This paper aims at stimulating interest among social scientists in the study of normative value production within art and design academic and pedagogical contexts. It sets forth a prospective research proposal based on pre-fieldwork and literature review which focuses on the interplay between the emerging managerial practices within art and design schools in Europe and the socio-politically engaged creative practices of artists and designers. This study seeks to uncover the political vectors that circulate within the merger of management within art and design higher education in Europe. The presentation anchors itself in the Economy of Worth theory and extends the concepts of value and legitimacy systems proposed by Boltanski and Thévenot (1986), and later Boltanski and Chiapello (1999). By examining the elective affinities between social entrepreneurship and socio-politically engaged artists, the paper explores the convergence and divergence of their methods and values. It also addresses the institutional context of European art and design schools, analysing the impact of managerial reforms after the Bologna Declaration and subsequent policies. The merger of art and design schools is situated within the historical trajectory of the modernist ethos, particularly drawing from the legacy of the Bauhaus movement. The Vienna Declaration on artistic research is critically examined, highlighting its potential normative, elitist, and cryptocratic tendencies.
Metabolic Syndrome During Pregnancy_Prevalence and determinants.pdf
Creators: name: DABOU, Solange
name: Onbayokolack, Nadine sylvie
name: Sama, Leonard Fonkeng
name: Foking, Emerveline Matene
name: Kamdom, Nadine Melaine
name: Telefo, Phelix Bruno
Publisher: name: figshare
Year: 2023
Subjects: Metabolic medicine
Medical biochemistry - lipids
Medical biochemistry - carbohydrates

description: Abstract Purpose Metabolic syndrome (MS) during pregnancy constitutes a serious threat to the mother and child health that will shortly become a major public health issue, especially in developing countries. However, in Cameroon, epidemiological data on MS during pregnancy are still scarce. The aim of this study was to determine the prevalence and determinants of MS among pregnant women followed-up at the Dschang District Hospital (DDH), in the west region of Cameroon. Patients and Methods This study was a hospital based cross-sectional study, carried out among pregnant women followed-up at the antenatal care unit of the DDH, from September 2019 to June 2020. Participants were assessed on sociodemographic, lifestyle parameters, and dietary habits using standardized and structured questionnaires. Anthropometric parameters, blood pressure, and biochemical markers were measured using standard procedures. Metabolic syndrome was diagnosed using the HNLBI/AHA definition, modified for pregnant women by Chatzi et al. A participant was recorded as having MS if presenting at least three of the following criteria: Pre-gestational BMI >30 kg/m2; triglycerides ≥150 mg/dl; HDL cholesterol <50 mg/dl; SBP ≥130/DBP ≥85 mm/Hg; and fasting blood glucose ≥100 mg/dl. Results Six hundred and four (604) pregnant women were included in the study. The prevalence of MS was 17.88% (95% CI: 15.03–21.14) and its most frequent individual components were low levels of HDL-cholesterol (66.23% (95% CI: 62.36–69.88)) and hypertriglyceridemia (28% (95% CI: 54.31–62.15)). Grand multiparous shows a higher risk of presenting MS (OR:3.06, 95% CI: 1.24–7.12; p = 0.011) compared to nulliparous. Pregestational BMI appears to be the best predictor of MS during pregnancy even after adjustment on age, parity, lifestyle and dietary habits (OR: 46.46, 95% CI: 15.58–138.49; p ˂ 0.0001). Conclusion The prevalence of MS on pregnant women in the Dschang health district is 17.88% (95% CI: 15.03–21.14) and its major determinant is pre-gestational obesity. This work provides quality preliminary data for the design and improvement of prevention strategies.
A classification result for helix surfaces with parallel mean curvature in product spaces
Creators: name: Fetcu, Dorel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We determine all helix surfaces with parallel mean curvature vector field, which are not minimal or pseudo-umbilical, in spaces of type $M^n(c)\times\mathbb{R}$, where $M^n(c)$ is a simply-connected $n$-dimensional manifold with constant sectional curvature $c$.
description: 7 pages
Myxococcus xanthus gliding motors are elastically coupled to the substrate as predicted by the focal adhesion model of gliding motility
Creators: name: Balagam, Rajesh
name: Litwin, Douglas B.
name: Czerwinski, Fabian
name: Sun, Mingzhai
name: Kaplan, Heidi B.
name: Shaevitz, Joshua W.
name: Igoshin, Oleg A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Myxococcus xanthus is a model organism for studying bacterial social behaviors due to its ability to form complex multi-cellular structures. Knowledge of M. xanthus surface gliding motility and the mechanisms that coordinate it are critically important to our understanding of collective cell behaviors. Although the mechanism of gliding motility is still under investigation, recent experiments suggest that there are two possible mechanisms underlying force production for cell motility: the focal adhesion mechanism and the helical rotor mechanism which differ in the biophysics of the cell-substrate interactions. Whereas the focal adhesion model predicts an elastic coupling, the helical rotor model predicts a viscous coupling. Using a combination of computational modeling, imaging, and force microscopy, we find evidence for elastic coupling in support of the focal adhesion model. Using a biophysical model of the M. xanthus cell, we investigated how the mechanical interactions between cells are affected by interactions with the substrate. Comparison of modeling results with experimental data for cell-cell collision events pointed to a strong, elastic attachment between the cell and substrate. These results are robust to variations in the mechanical and geometrical parameters of the model. We then directly measured the motor-substrate coupling by monitoring the motion of optically trapped beads and find that motor velocity decreases exponentially with opposing load. At high loads, motor velocity approaches zero velocity asymptotically and motors remain bound to beads indicating a strong, elastic attachment.
NOTES: Upper Winchenden: A helmet from the church; Chalfont St Giles wall-paintings and the north-aisle roof; Burnham: Monuments in the church; Hitcham: Cleaning of monuments; Dry rot at Fleet Marston Church; Little Missenden wall-paintings; The King's almshouses, Worminghall; Further discoveries at Grove Farm, Ashley Green; North Buckinghamshire churches
Creators: name: Holmes, Martin
Publisher: name: Archaeology Data Service
Year: 2023

description: Records of Buckinghamshire, 17 (4), 308-312
Quantum reconstruction of the mutual coherence function
Creators: name: Hradil, Z.
name: Rehacek, J.
name: Sanchez-Soto, L. L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Light is a major carrier of information about the world around us, from the microcosmos to the macrocosmos. The present methods of detection are sensitive both to robust features, such as intensity, or polarization, and to more subtle effects, such as correlations. Here we show how wave front detection, which allows for registering the direction of the incoming wave flux at a given position, can be used to reconstruct the mutual coherence function when combined with some techniques previously developed for quantum information processing.
Supplementary document for Source-independent quantum random number generator against tailored detector blinding attacks - 6175175.pdf
Creators: name: Liu, Wen-Bo
name: Lu, Yu-Shuo
name: Fu, Yao
name: Huang, Si-Cheng
name: Yin, Ze-Jie
name: Jiang, Kun
name: Yin, Hua-Lei
name: Chen, Zeng-Bing
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: subject: 20604 Quantum Optics
subject: FOS: Physical sciences

description: Supplemental document
The effect of potash extract on the blood pressure of albino rats
Creators: name: Ifeoma Enweani
Publisher: name: figshare
Year: 2020
Subjects: subject: 110303 Clinical Microbiology
subject: FOS: Clinical medicine

description: The effect of potash extract from plant source in the management of blood pressure was carried out using albino rats. Urethane (an anaesthetic) was used for the rats at a dose level of 5.25 ml/kg body weight in normal saline solution. An anticoagulant (heparinized normal saline solution 10 iu/ml) was also employed. The general vasoconstrictor used was nr adrenaline. It was shown that potash extract had a significant reductive effect on the arterial blood pressure to about 72% in the albino rats. This may have some health implications as it could be used in the management of hypertension
Heavy-meson semileptonic decays for the Standard Model and beyond
Creators: name: Liu, Yuzhi
name: Zhou, Ran
name: Bailey, Jon A.
name: Bazavov, A.
name: Bernard, C.
name: Bouchard, C. M.
name: DeTar, C.
name: Du, Daping
name: El-Khadra, A. X.
name: Foley, J.
name: Freeland, E. D.
name: Gámiz, E.
name: Gottlieb, Steven
name: Heller, U. M.
name: Jain, R. D.
name: Kim, Jongjeong
name: Kronfeld, A. S.
name: Levkova, J. Laiho L.
name: Mackenzie, P. B.
name: Meurice, Y.
name: Mohler, D.
name: Neil, E. T.
name: Oktay, M. B.
name: Qiu, Si-Wei
name: Simone, J. N.
name: Sugar, R.
name: Toussaint, D.
name: Van de Water, R. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the form factors for the semileptonic decays $B_s\to K\ellν$ and $B\to K\ell\ell$ with lattice QCD. We work at several lattice spacings and a range of light quark masses, using the MILC 2+1-flavor asqtad ensembles. We use the Fermilab method for the $b$ quark. We obtain chiral-continuum extrapolations for $E_K$ up to $\sim1.2$ GeV and then extend to the entire kinematic range with the model-independent $z$ expansion.
description: 7. pp, 6 figs. Presented at the 31st International Symposium on Lattice Field Theory - LATTICE 2013, July 29 - August 3, 2013, Mainz, Germany
Bent by baryons: the low mass galaxy-halo relation
Creators: name: Sawala, Till
name: Frenk, Carlos S.
name: Fattahi, Azadeh
name: Navarro, Julio F.
name: Bower, Richard G.
name: Crain, Robert A.
name: Vecchia, Claudio Dalla
name: Furlong, Michelle
name: Jenkins, Adrian
name: McCarthy, Ian G.
name: Qu, Yan
name: Schaller, Matthieu
name: Schaye, Joop
name: Theuns, Tom
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The relation between galaxies and dark matter halos is of vital importance for evaluating theoretical predictions of structure formation and galaxy formation physics. We show that the widely used method of abundance matching based on dark matter only simulations fails at the low mass end because two of its underlying assumptions are broken: only a small fraction of low mass (below 10^9.5 solar masses) halos host a visible galaxy, and halos grow at a lower rate due to the effect of baryons. In this regime, reliance on dark matter only simulations for abundance matching is neither accurate nor self-consistent. We find that the reported discrepancy between observational estimates of the halo masses of dwarf galaxies and the values predicted by abundance matching does not point to a failure of LCDM, but simply to a failure to account for baryonic effects. Our results also imply that the Local Group contains only a few hundred observable galaxies in contrast with the thousands of faint dwarfs that abundance matching would suggest. We show how relations derived from abundance matching can be corrected, so that they can be used self-consistently to calibrate models of galaxy formation.
description: 8 pages, submitted to MNRAS, comments welcome
Heat transfer in the flow of a cold, two-dimensional vertical liquid jet against a hot, horizontal plate
Creators: name: Shu, Jian-Jun
name: Wilks, Graham
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A cold, thin film of liquid impinging on an isothermal hot, horizontal surface has been investigated. An approximate solution for the velocity and temperature distributions in the flow along the horizontal surface is developed, which exploits the hydrodynamic similarity solution for thin film flow. The approximate solution may provide a valuable basis for assessing flow and heat transfer in more complex settings.
description: arXiv admin note: text overlap with arXiv:1402.4386
Coupled pair approach for strongly-interacting trapped fermionic atoms
Creators: name: Bradly, C. J.
name: Mulkerin, B. C.
name: Martin, A. M.
name: Quiney, H. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present a coupled pair approach for studying few-body physics in harmonically trapped ultracold gases. The method is applied to a two-component Fermi system of $N$ particles. A stochastically variational gaussian expansion method is applied, focusing on optimization of the two-body correlations present in the strongly interacting, or unitary, limit. The groundstate energy of the four-, six- and eight-body problem with equal spin populations is calculated with high accuracy and minimal computational effort. We also calculate the structural properties of these systems and discuss their implication for the many-body ultracold gas and other few-body calculations.
description: 7 pages, 4 figures
Die Akustische Kamera zur gezielten Lärmminderung und zustandsbezogenen Instandhaltung von Tagebau-Großgeräten
Creators: name: Schneider, Robert
name: Fritsch, Tim
name: Magister, Jan
name: Rieder, Thomas
name: Hernschier, Stephan
name: Simon, Sylvio
Publisher: name: Zenodo
Year: 2020
Subjects: Akustische Kamera, Zustandsbezogene Instandhaltung, Tagebau-Großgeräte, Akustisches Modell, Gurtförderanlage

description: Die Akustische Kamera zur gezielten Lärmminderung und zustandsbezogenen Instandhaltung von Tagebau-Großgeräten
 Kurzbeschreibung
 Die Akustische Kamera ist ein bildgebendes Schallmessgerät welches in der Lage ist, Geräuschquellen zu lokalisieren und zu charakterisieren. Im Zusammenspiel mit Schalldruckpegel- und -intensitätsmessungen werden so präzise akustische Modelle von Großgeräten und Industrieanlagen erstellt. Die Anwendung dieses innovativen Messkonzepts ermöglicht es, gezielte Lärmminderungsmaßnahmen umzusetzen und so die hohen Anforderungen an den Umwelt- und Arbeitsschutz einzuhalten.
 Im Vortrag erfolgt die Systemvorstellung der Akustischen Kamera, ausgehend von dem technischen Aufbau und dem Messprinzip. Anschließend gibt es Einblicke in das Messkonzept zur gezielten Lärmminderung am Beispiel von Entstaubungsanlagen an einem Industriestandort. Die Grundlage liefert dabei die Lokalisierung der Hauptschallemittenten, auf dessen Basis die akustischen Modelle erstellt werden. Darauf aufbauend werden geeignete Lärmminderungsmaßnahmen entwickelt und umgesetzt. Die im Anschluss durchgeführten Abnahmemessungen bestätigen die Wirksamkeit der Maßnahmen.
 Weiterhin erfolgt die Präsentation eines zustandsbezogenen Instandhaltungskonzeptes für Gurtförderanlagen. Die Datenbasis für die Beurteilung des Anlagenzustands liefern dabei regelmäßige Schallintensitäts- und Schalldruckpegelmessungen. Der so betreute Förderer weist nach über fünf Jahren Einsatzzeit Geräuschemissionen auf, welche im Bereich der Neuanlage liegen.
 Die Präsentation liefert eine Zusammenfassung umfangreicher praktischer Erfahrung aus den Bereichen der Lärmmessung und Umsetzung von Schallminderungsmaßnahmen.
On minimal Poincaré $4$-complexes
Creators: name: Cavicchioli, Alberto
name: Hegenbarth, Friedrich
name: Repovš, Dušan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57N65, 57R67, 57Q10

description: We consider two types of minimal Poincaré $4$-complexes. One is defined with respect to the degree $1$-map order. This idea was already present in our previous papers, and more systematically studied later by Hillman. The second type of minimal Poincaré $4$-complexes were introduced by Hambleton, Kreck and Teichner. It is not based on an order relation. In the present paper we study existence and uniqueness.
Constraining Primordial Non-Gaussianity with Moments of the Large Scale Density Field
Creators: name: Mao, Qingqing
name: Berlind, Andreas A.
name: McBride, Cameron K.
name: Scherrer, Robert J.
name: Scoccimarro, Roman
name: Manera, Marc
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use cosmological N-body simulations to investigate whether measurements of the moments of large-scale structure can yield constraints on primordial non-Gaussianity. We measure the variance, skewness, and kurtosis of the evolved density field from simulations with Gaussian and three different non-Gaussian initial conditions: a local model with f_NL=100, an equilateral model with f_NL=-400, and an orthogonal model with f_NL=-400. We show that the moments of the dark matter density field differ significantly between Gaussian and non-Gaussian models. We also make the measurements on mock galaxy catalogs that contain galaxies with clustering properties similar to those of luminous red galaxies (LRGs). We find that, in the case of skewness and kurtosis, galaxy bias reduces the detectability of non-Gaussianity, though we can still clearly discriminate between different models in our simulation volume. However, in the case of the variance, galaxy bias greatly amplifies the detectability of non-Gaussianity. In all cases we find that redshift distortions do not significantly affect the detectability. When we restrict our measurements to volumes equivalent to the Sloan Digital Sky Survey II (SDSS-II) or Baryon Oscillation Spectroscopic Survey (BOSS) samples, the probability of detecting a departure from the Gaussian model is high by using measurements of the variance, but very low by using only skewness and kurtosis measurements. We find that skewness and kurtosis measurements are never likely to yield useful constraints on primordial non-Gaussianity, but future surveys should be large enough to place meaningful constraints using measurements of the galaxy variance.(Abridged)
Mechanism reduction for multicomponent surrogates: a case study using toluene reference fuels
Creators: name: Niemeyer, Kyle E
name: Sung, Chih-Jen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences
subject: 80A30 (Primary) 80A25 (Secondary)

description: Strategies and recommendations for performing skeletal reductions of multicomponent surrogate fuels are presented, through the generation and validation of skeletal mechanisms for a three-component toluene reference fuel. Using the directed relation graph with error propagation and sensitivity analysis method followed by a further unimportant reaction elimination stage, skeletal mechanisms valid over comprehensive and high-temperature ranges of conditions were developed at varying levels of detail. These skeletal mechanisms were generated based on autoignition simulations, and validation using ignition delay predictions showed good agreement with the detailed mechanism in the target range of conditions. When validated using phenomena other than autoignition, such as perfectly stirred reactor and laminar flame propagation, tight error control or more restrictions on the reduction during the sensitivity analysis stage were needed to ensure good agreement. In addition, tight error limits were needed for close prediction of ignition delay when varying the mixture composition away from that used for the reduction. In homogeneous compression-ignition engine simulations, the skeletal mechanisms closely matched the point of ignition and accurately predicted species profiles for lean to stoichiometric conditions. Furthermore, the efficacy of generating a multicomponent skeletal mechanism was compared to combining skeletal mechanisms produced separately for neat fuel components; using the same error limits, the latter resulted in a larger skeletal mechanism size that also lacked important cross reactions between fuel components. Based on the present results, general guidelines for reducing detailed mechanisms for multicomponent fuels are discussed.
description: Accepted for publication in Combustion and Flame
Ion sound and dust acoustic waves at finite size of plasma particles
Creators: name: Andreev, Pavel A.
name: Kuz'menkov, L. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We consider influence of finite size of ions on properties of classic plasmas. We focus our attention on the ion sound for electron-ion plasmas. We also consider dusty plasmas, where we account finite size of ions and particles of dust and consider the dispersion of dust acoustic waves. Finite size of particles affects classical plasma properties. Finite size of particles gives considerable contribution for small wave lengths, which is area of appearing of quantum effects. Consequently, it is very important to consider finite size of ions in quantum plasmas as well.
description: 7 pages, 2 figures
Convexity, Moduli of Smoothness and a Jackson-Type Inequality
Creators: name: Ditzian, Zeev
name: Prymak, Andriy
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 41A63, 41A17, 41A25, 46B20, 47D60

description: For a Banach space $B$ of functions which satisfies for some $m>0$ $$ \max(\|F+G\|_B,\|F-G\|_B) \ge (\|F\|^s_B + m\|G\|^s_B)^{1/s}, \forall F,G\in B \ (*) $$ a significant improvement for lower estimates of the moduli of smoothness $ω^r(f,t)_B$ is achieved. As a result of these estimates, sharp Jackson inequalities which are superior to the classical Jackson type inequality are derived. Our investigation covers Banach spaces of functions on $R^d$ or $T^d$ for which translations are isometries or on $S^{d-1}$ for which rotations are isometries. Results for $C_0$ semigroups of contractions are derived. As applications of the technique used in this paper, many new theorems are deduced. An $L_p$ space with $1
Extreme Blazars Studied with Fermi-LAT and Suzaku: 1ES 0347-121 and Blazar Candidate HESS J1943+213
Creators: name: Tanaka, Y. T.
name: Stawarz, L.
name: Finke, J.
name: Cheung, C. C.
name: Dermer, C. D.
name: Kataoka, J.
name: Bamba, A.
name: Dubus, G.
name: De Naurois, M.
name: Wagner, S. J.
name: Fukazawa, Y.
name: Thompson, D. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on our study of high-energy properties of two peculiar TeV emitters: the "extreme blazar" 1ES 0347-121 and the "extreme blazar candidate" HESS J1943+213 located near the Galactic Plane. Both objects are characterized by quiescent synchrotron emission with flat spectra extending up to the hard X-ray range, and both were reported to be missing GeV counterparts in the Fermi-LAT 2-year Source Catalog. We analyze a 4.5 year accumulation of the Fermi-LAT data, resulting in the detection of 1ES 0347-121 in the GeV band, as well as in improved upper limits for HESS J1943+213. We also present the analysis results of newly acquired Suzaku data for HESS J1943+213. The X-ray spectrum is well represented by a single power law extending up to 25 keV with photon index 2.00+/-0.02 and a moderate absorption in excess of the Galactic value, in agreement with previous X-ray observations. No short-term X-ray variability was found over the 80 ks duration of the Suzaku exposure. Under the blazar hypothesis, we modeled the spectral energy distributions of 1ES 0347-121 and HESS J1943+213, and derived constraints on the intergalactic magnetic field strength and source energetics. We conclude that although the classification of HESS J1943+213 has not yet been determined, the blazar hypothesis remains the most plausible option, since in particular the broad-band spectra of the two analyzed sources along with the source model parameters closely resemble each other, and the newly available WISE and UKIDSS data for HESS J1943+213 are consistent with the presence of an elliptical host at the distance of approximately ~600 Mpc.
description: 10 pages, 7 figures, 3 tables. Accepted by ApJ
Structural and vibrational properties of nitrogen-rich energetic material guanidinium 2-methyl-5-nitraminotetrazolate
Creators: name: Babu, K. Ramesh
name: Vaitheeswaran, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present density functional theory calculations on the crystal structure, equation of state, vibrational properties and electronic structure of nitrogen-rich solid energetic material guanidinium 2-methyl-5-nitraminotetrazolate (G-MNAT). The ground state structural properties calculated with dispersion corrected density functionals are in good agreement with experiment. The computed equilibrium crystal structure is further used to calculate the equation of state and zone-center vibrational frequencies of the material. The electronic band structure is calculated and found that the material is an indirect band gap semiconductor with a value of 3.04 eV.