cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Beyond Navier--Stokes equations: Capillarity of ideal gas
Creators: name: Gorban, A. N.
name: Karlin, I. V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The system of Navier--Stokes--Fourier equations is one of the most celebrated systems of equations in modern science. It describes dynamics of fluids in the limit when gradients of density, velocity and temperature are sufficiently small, and loses its applicability when the flux becomes so non-equilibrium that the changes of velocity, density or temperature on the length compatible with the mean free path are non-negligible. The question is: how to model such fluxes? This problem is still open. (Despite the fact that the first `final equations of motion' modified for analysis of thermal creep in rarefied gas were proposed by Maxwell in 1879.) There are, at least, three possible answers: (i) use molecular dynamics with individual particles, (ii) use kinetic equations, like Boltzmann's equation, or (iii) find a new system of equations for description of fluid dynamics with better accounting of non-equilibrium effects. These three approaches work at different scales. We explore the third possibility using the recent findings of capillarity of internal layers in ideal gases and of saturation effect in dissipation (there is a limiting attenuation rate for very short waves in ideal gas and it cannot increase infinitely). One candidate equation is discussed in more detail, the Korteweg system proposed in 1901. The main ideas and approaches are illustrated by a kinetic system for which the problem of reduction of kinetics to fluid dynamics is analytically solvable.
description: Corrected misprints in Eqs (7) and (22), thanks to E. Azadi
Tschientschy, Simon
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1824

description: Ort: St. Jakob / Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Static trace free Einstein equations and stellar distributions
Creators: name: Hansraj, Sudan
name: Goswami, Rituparno
name: Ellis, George
name: Mkhize, Njabulo
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct models of static spherical distributions of perfect fluid in trace--free Einstein gravity theory. The equations governing the gravitational field are equivalent to the standard Einstein's equations however, their presentation is manifestly different which motivates the question whether new information would emerge due to the nonlinearity of the field equations. The incompressible fluid assumption does not lead to the well known Schwarzschild interior metric of Einstein gravity and a term denoting the presence of a cosmological constant is present on account of the integration process. The Schwarzschild interior is regained as a special case of a richer geometry. On the other hand, when the Schwarzschild geometry is prescribed, a constant density fluid emerges consistent with the standard equations. A complete model of an isothermal fluid sphere with pressure and density obeying the inverse square law is obtained. Corrections to the model previously presented in the literature by Saslaw {\it {et al}} are exhibited. The isothermal ansatz does not yield a constant gravitational potential in general but both potentials are position dependent. Conversely, it is shown that assuming a constant $g_{rr}$ gravitational potential does not yield an isothermal fluid in general as is the case in standard general relativity. The results of the standard Einstein equations are special cases of the models reported here. Noteworthy is the fact that whereas the previously reported isothermal solution was only of cosmological interest, the solution reported herein admit compact objects by virtue of the fact that a pressure-free hypersurface exists. Finally we analyze the consequences of selecting the Finch--Skea metric as the seed solution.
description: 5 figures
Seufferheld, Louis François
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1824

description: Ort: Mailand
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Salice, Lorentz
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1824

description: Ort: Breslau
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Schaezler, Joh. Lorenz
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1824

description: Ort: Augsburg
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Observation of Caroli-de Gennes-Matricon Vortex States in YBa$_2$Cu$_3$O$_{7-δ}$
Creators: name: Berthod, Christophe
name: Maggio-Aprile, Ivan
name: Bruér, Jens
name: Erb, Andreas
name: Renner, Christoph
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The copper oxides present the highest superconducting temperature and properties at odds with other compounds, suggestive of a fundamentally different superconductivity. In particular, the Abrikosov vortices fail to exhibit localized states expected and observed in all clean superconductors. We have explored the possibility that the elusive vortex-core signatures are actually present but weak. Combining local tunneling measurements with large-scale theoretical modeling, we positively identify the vortex states in YBa$_2$Cu$_3$O$_{7-δ}$. We explain their spectrum and the observed variations thereof from one vortex to the next by considering the effects of nearby vortices and disorder in the vortex lattice. We argue that the superconductivity of copper oxides is conventional, but the spectroscopic signature does not look so because the superconducting carriers are a minority.
description: Published version, including supplemental material
Pasteur, J. M
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Genua
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
High resolution two-dimensional optical spectroscopy of electron spins
Creators: name: Salewski, M.
name: Poltavtsev, S. V.
name: Yugova, I. A.
name: Karczewski, G.
name: Wiater, M.
name: Wojtowicz, T.
name: Yakovlev, D. R.
name: Akimov, I. A.
name: Meier, T.
name: Bayer, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Multidimensional coherent optical spectroscopy is one of the most powerful tools for investigating complex quantum mechanical systems. While it was conceived decades ago in magnetic resonance spectroscopy using micro- and radio-waves, it has recently been extended into the visible and UV spectral range. However, resolving MHz energy splittings with ultrashort laser pulses has still remained a challenge. Here, we analyze two-dimensional Fourier spectra for resonant optical excitation of resident electrons to localized trions or donor-bound excitons in semiconductor nanostructures subject to a transverse magnetic field. Particular attention is devoted to Raman coherence spectra which allow one to accurately evaluate tiny splittings of the electron ground state and to determine the relaxation times in the electron spin ensemble. A stimulated step-like Raman process induced by a sequence of two laser pulses creates a coherent superposition of the ground state doublet which can be retrieved only optically due to selective excitation of the same sub-ensemble with a third pulse. This provides the unique opportunity to distinguish between different complexes that are closely spaced in energy in an ensemble. The related experimental demonstration is based on photon echo measurements in an n-type CdTe/(Cd,Mg)Te quantum well structure detected by a heterodyne technique. The difference in the sub-$μ$eV range between the Zeeman splittings of donor-bound electrons and electrons localized at potential fluctuations can be resolved even though the homogeneous linewidth of the optical transitions is larger by two orders of magnitude.
description: 11 pages, 6 figures
title: Systematics of submarine ‘forward’ and ‘reverse’ weathering
Creators: name: Müller, Gerrit
name: Sluijs, Appy
name: Middelburg, Jack J.
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Submarine weathering reactions associated with cation-rich (‘forward’) and cation-poor (‘reverse’) materials are significant, yet poorly understood parts of marine biogeochemical cycles, especially in coastal zones, where abundant lithogenic material is delivered by rivers and mixes with marine biogenic particles. Because of their different reaction stoichiometry, forward and reverse weathering processes have opposing effects on inorganic carbon, alkalinity and major element cycling in the ocean. The dominance of either forward or reverse weathering processes has been demonstrated to vary at different coastal marine sites, fueling speculation about controls of rates and stoichiometry of these diagenetic weathering reactions. We constructed a simple kinetic box model of coupled organic and inorganic particle diagenesis in river-influenced coastal systems to disentangle effects of (1) pH-Eh regimes, driven by prevalent microbial pathways of organic matter decay, and of (2) mineralogical variability of sediment substrates, i.e., the mixture of different terrestrial and marine inputs. In theory, highly pre-weathered and biogenic silica-rich substrates altering in suboxic settings dominated by microbial iron reduction favor solute and alkalinity consumption by reverse weathering. In contrast, alteration of cation-rich, volcanogenic and basaltic material in CO2-enriched oxic or methanogenic zones may rather drive a forward weathering process and alkalinity generation. Because the spatial distribution of both factors, sediment input and local redox processes, likely has changed during Earth’s history, substantial variability of differential element fluxes in submarine weathering processes would be expected, confounding our current understanding of weathering feedbacks in the Earth system.
Agroforestry and the EU ABER Regulation
Creators: name: LAWSON Gerry
Publisher: name: Zenodo
Year: 2022

description: Policy Briefing #19 summarises changes in the Agricultural Block Exemption Rules (ABER) for State Aid to agriculture, forestry,  fisheries and aquaculture relevant to agroforetsry. Changes were published on 14.12.22 as Commission Regulation 2022/2472. This replaces Regulation 702/2014. EURAF particularly welcomes: a) the extension of funding to the restoration of existing agroforestry areas, rather than simply new planting,  b) the increase in payments for establishment and restoration from 80% to 100% of eligible costs, c) the increase in the eligibility period for annual premiums from 5 years to 12 years.  These changes could put agroforestation schemes on a par with afforestation in countries like Ireland, Netherlands (Figure 1) and Finland, which finance forestry using national or European funds which are outside of the CAP.  There is concern, however, that these States are not required to provide any reporting at a European level on their forestry and agroforestry activities.
description: EURAF Policy Briefing #19
Generalized phase mixing: Turbulence-like behaviour from unidirectionally propagating MHD waves
Creators: name: Magyar, Norbert
name: Van Doorsselaere, Tom
name: Goossens, Marcel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We present the results of three-dimensional (3D) ideal magnetohydrodynamics (MHD) simulations on the dynamics of a perpendicularly inhomogeneous plasma disturbed by propagating Alfvénic waves. Simpler versions of this scenario have been extensively studied as the phenomenon of phase mixing. We show that, by generalizing the textbook version of phase mixing, interesting phenomena are obtained, such as turbulence-like behavior and complex current-sheet structure, a novelty in longitudinally homogeneous plasma excited by unidirectionally propagating waves. This constitutes an important finding for turbulence-related phenomena in astrophysics in general, relaxing the conditions that have to be fulfilled in order to generate turbulent behavior.
Portaz, Ber
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Delémont
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Pfeiffer & Schmidt
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Braunschweig
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Some criteria for Wind Riemannian completeness and existence of Cauchy hypersurfaces
Creators: name: Javaloyes, Miguel Ángel
name: Sánchez, Miguel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary 53C60, 53C22

description: Recently, a link between Lorentzian and Finslerian Geometries has been carried out, leading to the notion of wind Riemannian structure (WRS), a generalization of Finslerian Randers metrics. Here, we further develop this notion and its applications to spacetimes, by introducing some characterizations and criteria for the completeness of WRS's. As an application, we consider a general class of spacetimes admitting a time function $t$ generated by the flow of a complete Killing vector field (generalized standard stationary spacetimes or, more precisely, SSTK ones) and derive simple criteria ensuring that its slices $t=$ constant are Cauchy. Moreover, a brief summary on the Finsler/Lorentz link for readers with some acquaintance in Lorentzian Geometry, plus some simple examples in Mathematical Relativity, are provided.
description: 30 pages, 4 figures, contribution to the Proceedings of the 8th International Meeting on Lorentzian Geometry, GELOMA, M\'alaga, September 20-23, 2016
Optimal lossy quantum interferometry in phase space
Creators: name: Klimov, Andrei B.
name: Zwierz, Marcin
name: Wallentowitz, Sascha
name: Jarzyna, Marcin
name: Banaszek, Konrad
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyse the phase space representation of the optimal measurement of a phase shift in an interferometer with equal photon loss in both its arms. In the local phase estimation scenario with a fixed number of photons, we identify features of the spin Wigner function that warrant sub-shot noise precision, and discuss their sensitivity to losses. We derive the asymptotic form of an integral kernel describing the process of photon loss in the phase space in the limit of large photon numbers. The analytic form of this kernel allows one to assess the ultimate precision limit for a lossy interferometer. We also provide a general lower bound on the quantum Fisher information in terms of spin Wigner functions.
description: 20 pages, 6 figures, published version
Dynamic Generation of Light States with Discrete Symmetries
Creators: name: Cordero, S.
name: Nahmad-Achar, E.
name: Castaños, O.
name: López-Peña, R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A dynamic procedure is established within the generalised Tavis-Cummings model to generate light states with discrete point symmetries, given by the cyclic group ${\cal C}_n$. We consider arbitrary dipolar coupling strengths of the atoms with a one-mode electromagnetic field in a cavity. The method uses mainly the matter-field entanglement properties of the system, which can be extended to any number of $3$-level atoms. An initial state constituted by the superposition of two states with definite total excitation numbers, $\vert ψ\rangle_{M_1}$, and $\vert ψ\rangle_{M_2}$, is considered. It can be generated by the proper selection of the time-of-flight of an atom passing through the cavity. We demonstrate that the resulting Husimi function of the light is invariant under cyclic point transformations of order $n=\vert M_1-M_2\vert$.
description: 24 pages, 7 figures
Rall, J. H
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Griesenfeld
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Adaptive nonparametric drift estimation for diffusion processes using Faber-Schauder expansions
Creators: name: van der Meulen, Frank
name: Schauer, Moritz
name: van Waaij, Jan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We consider the problem of nonparametric estimation of the drift of a continuously observed one-dimensional diffusion with periodic drift. Motivated by computational considerations, van der Meulen e.a. (2014) defined a prior on the drift as a randomly truncated and randomly scaled Faber-Schauder series expansion with Gaussian coefficients. We study the behaviour of the posterior obtained from the prior from a frequentist asymptotic point of view. If the true data generating drift is smooth, it is proved that the posterior is adaptive with posterior contraction rates for the $L_2$-norm that are optimal up to a log factor. Moreover, contraction rates in $L_p$-norms with $p\in (2,\infty]$ are derived as well.
Pestalozzi-Schinz, Salomon, zum Steinbock (Pestaluz)
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Zürich
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Seismic sensitivity of Normal-mode Coupling to Lorentz stresses in the Sun
Creators: name: Hanasoge, Shravan M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Understanding the governing mechanism of solar magnetism remains an outstanding challenge in astrophysics. Seismology is the most compelling technique with which to infer the internal properties of the Sun and stars. Waves in the Sun, nominally acoustic, are sensitive to the emergence and cyclical strengthening of magnetic field, evidenced by measured changes in resonant oscillation frequencies that are correlated with the solar cycle. The inference of internal Lorentz stresses from these measurements has the potential to significantly advance our appreciation of the dynamo. Indeed, seismological inverse theory for the Sun is well understood for perturbations in composition, thermal structure and flows but, is not fully developed for magnetism, owing to the complexity of the ideal magnetohydrodynamic (MHD) equation. Invoking first-Born perturbation theory to characterize departures from spherically symmetric hydrostatic models of the Sun and applying the notation of generalized spherical harmonics, we calculate sensitivity functions of seismic measurements to the general time-varying Lorentz stress tensor. We find that eigenstates of isotropic (i.e. acoustic only) background models are dominantly sensitive to isotropic deviations in the stress tensor and much more weakly so to anisotropic stresses (and therefore challenging to infer). The apple cannot fall far from the tree.
description: 18 pages, 4 figures; MNRAS
Passavant & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Pons, Louis
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Lyon
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Rabaud, Frères & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Marseille
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Persoz, J., Fils ainé
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Neuchâtel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Passavant, Philipp, & Sohn
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Frankfurt a. M.
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Existence and stability of circular orbits in static and axisymmetric spacetimes
Creators: name: Jia, Junji
name: Pang, Xiankai
name: Yang, Nan
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The existence and stability of timelike and null circular orbits (COs) in the equatorial plane of general static and axisymmetric (SAS) spacetime are investigated in this work. Using the fixed point approach, we first obtained a necessary and sufficient condition for the non-existence of timelike COs. It is then proven that there will always exist timelike COs at large $ρ$ in an asymptotically flat SAS spacetime with a positive ADM mass and moreover, these timelike COs are stable. Some other sufficient conditions on the stability of timelike COs are also solved. We then found the necessary and sufficient condition on the existence of null COs. It is generally shown that the existence of timelike COs in SAS spacetime does not imply the existence of null COs, and vice-versa, regardless whether the spacetime is asymptotically flat or the ADM mass is positive or not. These results are then used to show the existence of timelike COs and their stability in an SAS Einstein-Yang-Mills-Dilaton spacetimes whose metric is not completely known. We also used the theorems to deduce the existence of timelike and null COs in some known SAS spacetimes.
description: 11 pages, 1 table, no figures, minor revision to match the submitted version
Poncet, J. H
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Lyon
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Preiswerk, Johannes, & Sohn
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Paravicini, Rudolf
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Perinetti, Mario, & Frat
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Mailand
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Platzmann & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Lyon
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Pozzoli, Pierre
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1826

description: Ort: Mailand
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Termitomyces heimii Natarajan 1979
Creators: name: Dasanthi, Naduni
name: Thambugala, Kasun M.
name: Karunarathna, Samantha C.
name: Ediriweera, Aseni
name: Munasinghe, Helani
name: Elgorban, Abdallah M.
name: Harischandra, Hiruni
name: Dharmasena, Buddhika P.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Agaricales
Lyophyllaceae
Termitomyces
Termitomyces heimii

description: Termitomyces heimii Natarajan (1979:853)
Index Fungorum: 324479
Figure 10 and Figure 11
 Basidiomata medium. Pileus 5–8 cm diameter, parabolic to campanulate when young, plano-convex at maturity, with rounded perforatorium; surface smooth, white (4A1) to grey (6B1) and dark at the center, velar squamulose present on the surface, margin thick, incurved at first then straight or slightly uplifted, often splitting. Lamellae free, white to grey or creamy, 1 mm wide, crowded with four lengths of lamellulae. Stipe 11.5–12 cm long, 1.2 cm wide, cylindrical or subcylindrical, central, solid, surface white to cream or light ash, smooth and glabrous. Annulus membranous, on the upper quarter of stipe, surface white to light ash.
 Basidiospores 6.4–9.5 × 4.2–6.2 μm, Q = 1.63, ovoid to ellipsoid; thin-walled, smooth, inamyloid. Basidia 18.5– 19 × 4.8–7.8 μm, sub-cylindric to clavate, four sterigmated, inamyloid. Cheilocystidia abundant, 21.3–35 × 13.8–20 μm, clavate or pyriform, thin-walled, smooth, inamyloid. Pleurocystidia is rarely present, 20–32 × 10–18 μm, similar to cheilocystidia.
 Ecology and distribution:— It grows solitary on moist soil. It is widely distributed in Bangladesh, China, India, Ivory Coast, Kenya, Malaysia, Myanmar, Nepal, Pakistan, Sri Lanka, and Thailand.
 Material examined:— Sri Lanka. Sabaragamuwa Province: Rathnapura District, Balangoda, 80°44’59.34”E 6°41’17.80”N, 7 th August 2022, Naduni Dasanthi, GenBank accession number: OR139839, Specimen number: RH29 (USJ-GMBU-003); ibid., Belihuloya, 80°47’22.64”E 6°42’32.03”N, 30 th September 2022, Naduni Dasanthi, GenBank accession number: OR139838, Specimen number: RH30 (USJ-GMBU-004); ibid., Kalthota, 80°54’29.06”E 6°39’43.12”N, 28 th August 2022, Naduni Dasanthi, GenBank accession number: OR139836, Specimen number: RH33 (USJ-GMBU-006).
description: Published as part of Dasanthi, Naduni, Thambugala, Kasun M., Karunarathna, Samantha C., Ediriweera, Aseni, Munasinghe, Helani, Elgorban, Abdallah M., Harischandra, Hiruni & Dharmasena, Buddhika P., 2024, Morphological and molecular insights into the hidden edible mushroom diversity in Sri Lanka, pp. 192-213 in Phytotaxa 645 (3) on page 201, DOI: 10.11646/phytotaxa.645.3.1, http://zenodo.org/record/13215004
Optical unidirectional amplification in a three-mode optomechanical system
Creators: name: Li, Yong
name: Huang, Y. Y.
name: Zhang, X. Z.
name: Tian, Lin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the directional amplification of an optical probe field in a three-mode optomechanical system, where the mechanical resonator interacts with two linearly-coupled optical cavities and the cavities are driven by strong optical pump fields. The optical probe field is injected into one of the cavity modes, and at the same time, the mechanical resonator is subject to a mechanical drive with the driving frequency equal to the frequency difference between the optical probe and pump fields. We show that the transmission of the probe field can be amplified in one direction and de-amplified in the opposite direction. This directional amplification or de-amplification results from the constructive or destruction interference between different transmission paths in this three-mode optomechanical system.
description: 8 pages, 4 figures
How has patient feedback been applied in undergraduate dental education for individual student development and assessment: a scoping review protocol
Creators: name: Bateman, Heidi
name: McCracken, Giles
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Dentistry
subject: FOS: Clinical medicine
subject: Medicine and Health Sciences
subject: Medical Education

description: • This study will systematically identify and review how patient feedback has been applied in undergraduate dental education for individual student development and assessment • This scoping review will adopt the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) tool, which is the current guidance on conducting scoping reviews. This will ensure a systematic approach to searching, screening and reporting.
General No-Scale Supergravity: An ${\cal F}$-$SU(5)$ Tale
Creators: name: Hu, Dingli
name: Li, Tianjun
name: Lux, Adam
name: Maxin, James A.
name: Nanopoulos, Dimitri V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the grand unification model flipped $SU(5)$ with additional vector-like particle multiplets, or ${\cal F}$-$SU(5)$ for short, in the framework of General No-Scale Supergravity. In our analysis we allow the supersymmetry (SUSY) breaking soft terms to be generically non-zero, thereby extending the phenomenologically viable parameter space beyond the highly constrained one-parameter version of ${\cal F}$-$SU(5)$. In this initial inquiry, the mSUGRA/CMSSM SUSY breaking terms are implemented. We find this easing away from the vanishing SUSY breaking terms enables a more broad mass range of vector-like particles, dubbed flippons, including flippons less than 1 TeV that could presently be observed at the LHC2, as well as a lighter gluino mass and SUSY spectrum overall. This presents heightened odds that the General No-Scale ${\cal F}$-$SU(5)$ viable parameter space can be probed at the LHC2. The phenomenology comprises both bino and higgsino dark matter, including a Higgs funnel region. Particle states emerging from the SUSY cascade decays are presented to experimentally distinguish amongst the diverse phenomenological regions.
description: 8 pages, 4 figures, 4 tables; Version accepted for publication in Physics Letters B
MPEC 2023-E71 : 2023 EV
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 EV

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: Earth's lower mantle may be harder than expected: Al, Si diffusion in bridgmanite
Creators: name: Czekay, Laura
name: Miyajima, Nobuyoshi
name: McCammon, Catherine
name: Frost, Daniel
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Diffusion of atoms in crystalline solids at high temperatures and pressures influences dynamic processes in Earth’s lower mantle. This study aims to better understand the physical behaviour of Earth’s most abundant mineral with implications for lower mantle viscosity. Previous studies that measured Si-self diffusion coefficients in bridgmanite (Brg) showed a value at 25 ± 1 GPa and 1800 °C of Log10(DSi) = -18 ± 0.5 (based on units of m2/s). Our study revealed a significant slower diffusion coefficient that may challenge previous calculations of lower mantle viscosity. We investigated Al, Si interdiffusion in Brg experimentally at 24 GPa and 1750 to 2000 °C using a multianvil apparatus using diffusion couples composed of bridgmanites that were pre-synthesised from 0-5 mol.% Al2O3-bearing MgSiO3 enstatite. The Al diffusion profiles were analysed across the diffusion interface in the recovered samples using a scanning transmission electron microscope equipped with an energy-dispersive X-ray spectrometer. The obtained diffusion coefficient for interdiffusion (volume diffusion) at 24 GPa and 1800 °C was Log10(DAl,Si) = -20.1 ± 0.7. The resulting data can be used to estimate deformational strain rates of Brg in the lower mantle based on different creep mechanisms controlling the viscosity.
MPEC 2023-R146 : 2023 RE5
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RE5

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
British Gallup Poll: CQ 039
Creators: name: Social Surveys (Gallup Poll) Limited
Publisher: name: Roper Center for Public Opinion Research
Year: 2022

description: Government approval rating(18); Thatcher approval rating(7); political party leaders(2); political party(5); 1987 election(2); most important problem(14); united vs divided parties(2); best Prime Minister(1); personal financial situation(2); economic situation(2); political policies favorability rating(14); Conservative party(9); poll tax(2); electricity industry(1); water industry(1); National Health Service(1); education(1); Conservative party leaders(15); Gulf crisis(1).
Temperature driven quenches in the Ising model: appearance of negative Rényi mutual information
Creators: name: Kormos, Márton
name: Zimborás, Zoltán
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dynamics of the transverse field Ising chain after a local quench in which two independently thermalised chains are joined together and are left to evolve unitarily. In the emerging non-equilibrium steady state the Rényi mutual information with different indices are calculated between two adjacent segments of the chain, and are found to scale logarithmically in the subsystem size. Surprisingly, for Rényi indices $α>2$ we find cases where the prefactor of the logarithmic dependence is negative. The fact that the naively defined Rényi mutual information might be negative has been pointed out before, however, we provide the first example for this scenario in a realistic many-body setup. Our numerical and analytical results indicate that in this setup it can be negative for any index $α>2$ while it is always positive for $α<2.$ Interestingly, even for $α>2$ the calculated prefactors show some universal features: for example, the same prefactor is also shown to govern the logarithmic time dependence of the Rényi mutual information before the system relaxes locally to the steady state. In particular, it can decrease in the non-equilibrium evolution after the quench.
description: Invited contribution to the special issue "Emerging Talents" of Journal of Physics A
Equivariant maps between representation spheres
Creators: name: Błaszczyk, Zbigniew
name: Marzantowicz, Wacław
name: Singh, Mahender
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55S37 (primary), 55M20, 55S35, 55N91 (secondary)

description: Let $G$ be a compact Lie group. We prove that if $V$ and $W$ are orthogonal $G$-representations such that $V^G=W^G=\{0\}$, then a $G$-equivariant map $S(V) \to S(W)$ exists provided that $\dim V^H \leq \dim W^H$ for any closed subgroup $H\subseteq G$. This result is complemented by a reinterpretation in terms of divisibility of certain Euler classes when $G$ is a torus.
description: The previous Subsection 4.1 and Section 5 are removed, as they relied on a false result from another paper: it is not true that the localization of the integral cohomology ring of the classifying space of $G = (\mathbb{S}^1)^k \times (\mathbb{Z}_p)^l$ with respect to the set of Euler classes of complex $G$-representations without a trivial direct summand is non-zero. 10 pages, no figures
MPEC 2023-R147 : 2023 RF5
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RF5

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Supernova Simulations from a 3D Progenitor Model -- Impact of Perturbations and Evolution of Explosion Properties
Creators: name: Müller, B.
name: Melson, T.
name: Heger, A.
name: Janka, H. -Th.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the impact of large-scale perturbations from convective shell burning on the core-collapse supernova explosion mechanism using three-dimensional (3D) multi-group neutrino hydrodynamics simulations of an 18 solar mass progenitor. Seed asphericities in the O shell, obtained from a recent 3D model of O shell burning, help trigger a neutrino-driven explosion 330ms after bounce whereas the shock is not revived in a model based on a spherically symmetric progenitor for at least another 300ms. We tentatively infer a reduction of the critical luminosity for shock revival by ~20% due to pre-collapse perturbations. This indicates that convective seed perturbations play an important role in the explosion mechanism in some progenitors. We follow the evolution of the 18 solar mass model into the explosion phase for more than 2s and find that the cycle of accretion and mass ejection is still ongoing at this stage. With a preliminary value of 0.77 Bethe for the diagnostic explosion energy, a baryonic neutron star mass of 1.85 solar masses, a neutron star kick of ~600km/s and a neutron star spin period of ~20ms at the end of the simulation, the explosion and remnant properties are slightly atypical, but still lie comfortably within the observed distribution. Although more refined simulations and a larger survey of progenitors are still called for, this suggests that a solution to the problem of shock revival and explosion energies in the ballpark of observations are within reach for neutrino-driven explosions in 3D.
description: 23 pages, 22 figures, accepted for publication in MNRAS
Extreme isolation of WN3/O3 stars and implications for their evolutionary origin as the elusive stripped binaries
Creators: name: Smith, Nathan
name: Gotberg, Ylva
name: de Mink, Selma E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent surveys of the Magellanic Clouds have revealed a subtype of Wolf-Rayet (WR) star with peculiar properties. WN3/O3 spectra exhibit both WR-like emission and O3 V-like absorption - but at lower luminosity than O3 V or WN stars. We examine the projected spatial distribution of WN3/O3 stars in the LMC as compared to O-type stars. Surprisingly, WN3/O3 stars are among the most isolated of all classes of massive stars; they have a distribution similar to red supergiants dominated by initial masses of 10-15 $M_{\odot}$, and are far more dispersed than classical WR stars or luminous blue variables (LBVs). Their lack of association with clusters of O-type stars suggests strongly that WN3/O3 stars are not the descendants of single massive stars (30 $M_{\odot}$ or above). Instead, they are likely products of interacting binaries at lower initial mass (10-18 $M_{\odot}$). Comparison with binary models suggests a probable origin with primaries in this mass range that were stripped of their H envelopes through non-conservative mass transfer by a low-mass secondary. We show that model spectra and positions on the Hertzsprung-Russell diagram for binary stripped stars are consistent with WN3/O3 stars. Monitoring radial velocities with high-resolution spectra can test for low-mass companions or runaway velocities. With lower initial mass and environments that avoid very massive stars, the WN3/O3 stars fit expectations for progenitors of Type Ib and possibly Type Ibn supernovae.
description: Accepted for publication in MNRAS
Galaxy kinematics in the XMMU J2235-2557 cluster field at z~1.4
Creators: name: Pérez-Martínez, J. M.
name: Ziegler, B.
name: Verdugo, M.
name: Böhm, A.
name: Tanaka, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We took spatially resolved slit FORS2 spectra of 19 cluster galaxies at z=1.4, and 8 additional field galaxies at 1
description: Accepted for publication in A&A. 14 pages, 6 figures
A quantum diffusion law
Creators: name: Satpathi, Urbashi
name: Sinha, Supurna
name: Sorkin, Rafael D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyse diffusion at low temperature by bringing the fluctuation-dissipation theorem (FDT) to bear on a physically natural, viscous response-function R(t). The resulting diffusion-law exhibits several distinct regimes of time and temperature, each with its own characteristic rate of spreading. As with earlier analyses, we find logarithmic spreading in the quantum regime, indicating that this behavior is robust. A consistent R(t) must satisfy the key physical requirements of Wightman positivity and passivity, and we prove that ours does so. We also prove in general that these two conditions are equivalent when the FDT holds. Given current technology, our diffusion law can be tested in a laboratory with ultra cold atoms.
description: submitted for publication
title: Chemical composition and petrography of recent type 1 and 2 carbonaceous chondrite falls
Creators: name: Wombacher, Frank
name: Kerraouch, Imene
name: Bischoff, Addi
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
We analysed the recent (2019 - 2021) brecciated carbonaceous chondrite falls Flensburg (C1), Tarda (C2,) Kolang (CM1/2), Aguas Zarcas (CM2), and Winchcombe (CM2) together with Murchison and Paris for their chemical composition using ICP-MS and for Hg abundances using a direct mercury analyser. Chemical variations were evaluated considering new and published petrological and mineralogical data.

Aguas Zarcas #1 is enriched in Hg relative to a CI reference value of 258 ng/g, while Flensburg, Kolang, Winchcombe and the fusion crust-rich samples Aguas Zarcas #3a and 3b are depleted. The Hg contents in Aguas Zarcas #2 and 4 and both Tarda specimens are roughly similar to those extrapolated from plateau volatile element abundances, with a best fit if a CI Hg content of about 210 ng/g is assumed.

For Flensburg, Kolang, Aguas Zarcas #1 and 2, Murchison and Paris, elements analysed by ICP-MS display a typical CM composition, but Tarda shows less depletion of moderately volatile elements. Deviations for Ca, Sr, Ba, Na, Rb, and Cs in the pre-rain samples Aguas Zarcas #3a and 3b suggest that these elements were mobile within the parent body. The metal-rich lithology of Aguas Zarcas #4 displays no systematic enrichment in siderophile elements, but peculiar enrichments of refractory elements, most significantly for Zr, Hf, W, Ir, and some heavy REE. The enrichment of Ca, Sr, Mn, and Mg esp. in Tarda #1 reflects the high abundance of carbonates. Unlike for Tarda and some Aguas Zarcas samples, the Flensburg CM-related composition was not affected by intense aqueous alteration.
Role of dimensionality in preferential attachment growth in the Bianconi-Barabási model
Creators: name: Nunes, Thiago C.
name: Brito, Samurai
name: da Silva, Luciano R.
name: Tsallis, Constantino
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Scale-free networks are quite popular nowadays since many systems are well represented by such structures. In order to study these systems, several models were proposed. However, most of them do not take into account the node-to-node Euclidean distance, i.e., the geographical distance. In real networks, the distance between sites can be very relevant, e.g., those cases where it is intended to minimize costs. Within this scenario we studied the role of dimensionality $d$ in the Bianconi-Barabási model with a preferential attachment growth involving Euclidean distances. The preferential attachment in this model follows the rule $Π_{i} \propto η_i k_i/r_{ij}^{α_A}$ $(1 \leq i < j; α_A \geq 0)$, where $η_i$ characterizes the fitness of the $i$-th site and is randomly chosen within the $(0,1]$ interval. We verified that the degree distribution $P(k)$ for dimensions $d=1,2,3,4$ are well fitted by $P(k) \propto e_q^{-k/κ}$, where $e_q^{-k/κ}$ is the $q$-exponential function naturally emerging within nonextensive statistical mechanics. We determine the index $q$ and $κ$ as functions of the quantities $α_A$ and $d$, and numerically verify that both present a universal behavior with respect to the scaled variable $α_A/d$. The same behavior also has been displayed by the dynamical $β$ exponent which characterizes the steadily growing number of links of a given site.
description: 12 pages including 9 figures. To appear in the Journal of Statistical Mechanics (2017)