cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Indirect to direct gap crossover in two-dimensional InSe revealed by ARPES
Creators: name: Hamer, Matthew
name: Zultak, Johanna
name: Tyurnina, Anastasia V.
name: Zólyomi, Viktor
name: Terry, Daniel
name: Barinov, Alexei
name: Garner, Alistair
name: Donoghue, Jack
name: Rooney, Aidan P.
name: Kandyba, Viktor
name: Giampietri, Alessio
name: Graham, Abigail J.
name: Teutsch, Natalie C.
name: Xia, Xue
name: Koperski, Maciej
name: Haigh, Sarah J.
name: Fal'ko, Vladimir I.
name: Gorbachev, Roman
name: Wilson, Neil R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Atomically thin films of III-VI post-transition metal chalcogenides (InSe and GaSe) form an interesting class of two-dimensional semiconductor that feature strong variations of their band gap as a function of the number of layers in the crystal [1-4] and, specifically for InSe, an earlier predicted crossover from a direct gap in the bulk [5,6] to a weakly indirect band gap in monolayers and bilayers [7-11]. Here, we apply angle resolved photoemission spectroscopy with submicrometer spatial resolution ($μ$ARPES) to visualise the layer-dependent valence band structure of mechanically exfoliated crystals of InSe. We show that for 1 layer and 2 layer InSe the valence band maxima are away from the $\mathbfΓ$-point, forming an indirect gap, with the conduction band edge known to be at the $\mathbfΓ$-point. In contrast, for six or more layers the bandgap becomes direct, in good agreement with theoretical predictions. The high-quality monolayer and bilayer samples enables us to resolve, in the photoluminescence spectra, the band-edge exciton (A) from the exciton (B) involving holes in a pair of deeper valence bands, degenerate at $\mathbfΓ$, with the splitting that agrees with both $μ$ARPES data and the results of DFT modelling. Due to the difference in symmetry between these two valence bands, light emitted by the A-exciton should be predominantly polarised perpendicular to the plane of the two-dimensional crystal, which we have verified for few-layer InSe crystals.
Dynamical simulation of spin-glass and chiral-glass orderings in three-dimensional Heisenberg spin glasses
Creators: name: Kawamura, Hikaru
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Spin-glass and chiral-glass orderings in three-dimensional Heisenberg spin glasses are studied with and without randaom magnetic anisotropy by dynamical Monte Carlo simulations. In isotropic case, clear evidence of a finite-temperature chiral-glass transition is presented. While the spin autocorrelation exhibits only an interrupted aging, the chirality autocorrelation persists to exhibit a pronounced aging effect reminisecnt of the one observed in the mean-field model. In anisotropic case, asymptotic mixing of the spin and the chirality is observed in the off-equilibrium dynamics.
description: 4 pages including 5 figures, LaTex, to appear in Phys. Rev. Lett
Photonic jet: key role of injection for etchings with a shaped optical fiber tip
Creators: name: Pierron, Robin
name: Zelgowski, Julien
name: Pfeiffer, Pierre
name: Fontaine, Joël
name: Lecler, Sylvain
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate the key role of the laser injection into a multimode fiber to obtain a photonic jet (PJ). PJ, a high concentrated propagating beam with a full width at half maximum smaller than the diffraction limit, is here generated with a shaped optical fiber tip using a pulsed laser source (1064~nm, 100~ns, 35~kHz). Three optical injection systems of light are compared. For similar etched marks on silicon with diameters around 1~$μ$m, we show that the required ablation energy is minimum when the injected light beam is close to the fundamental mode diameter of the fiber. Thus, we confirm experimentally that to obtain a PJ out of an optical fiber, light injection plays a role as important as that of the tip shape, and therefore the role of the fundamental mode in the process.
Additional file 1 of Influence of biofilm growth age, media, antibiotic concentration and exposure time on Staphylococcus aureus and Pseudomonas aeruginosa biofilm removal in vitro
Creators: name: Chen, Xiaofeng
name: Thomsen, Trine Rolighed
name: Winkler, Heinz
name: Xu, Yijuan
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 1: Figure S1. S. aureus biofilm formation on CBD. After 24 or 72 h of growth, biofilms were removed from the pegs, transferred into the recovery plate and harvested by sonication. Six random wells of each row were selected for CFU count, in total 48 wells per plate. The number of CFUs per peg were different under different conditions. Generally 3 days incubation resulted in more CFUs per peg. Figure S2. P. aeruginosa PA14 biofilm formation on CBD. After 24 or 72 h of growth, biofilms were removed from the pegs, transferred into the recovery plate and harvested by sonication. Six random wells of each row were selected for CFU count, in total 48 wells per plate. The number of CFUs per peg were different under different conditions. Generally 3 days incubation resulted in more CFUs per peg. Figure S3. Flow diagram of the MBEC assay.
Energy Release on the Surface of a Rapidly Rotating Neutron Star during Disk Accretion: A Thermodynamic Approach
Creators: name: Sibgatullin, N.
name: Sunyaev, R.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The total energy E of a star as a function of its angular momentum J and mass M in the Newtonian theory: E = E(J, M) [in general relativity, the gravitational mass M of a star as a function of its angular momentum J and rest mass m, M = M(J, m)], is used to determine the remaining parameters (angular velocity, equatorial radius, chemical potential, etc.) in the case of rigid rotation. Expressions are derived for the energy release during accretion onto a cool (with constant entropy), rapidly rotating neutron star (NS) in the Newtonian theory and in general relativity. A separate analysis is performed for the cases where the NS equatorial radius is larger and smaller than the radius of the marginally stable orbit in the disk plane. An approximate formula is proposed for the NS equatorial radius for an arbitrary equation of state, which matches the exact one at J = 0.
description: 12 pages, 0 figures (Astronomy Letters in press)
Coherent Polariton Radiation and Light Localization
Creators: name: Yukalov, V. I.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: A system of resonance atoms is placed in a medium with developed polariton effect. In the spectrum of polariton states there can exist a band gap. If an atom with a resonance frequency inside the polariton gap is incorporated into the medium, the atomic spontaneous emission can be strongly suppressed. This is what is called the localization of light. Nevertheless, an ensemble of resonance atoms inside the polariton gap can radiate if their coherent interaction is sufficiently strong. Conditions when coherent polariton radiation can appear and the properties of this coherent polariton emission are studied.
description: 1 file, 30 pages, LaTex
Generalized-ensemble Monte carlo method for systems with rough energy landscape
Creators: name: Hansmann, Ulrich H. E.
name: Okamoto, Yuko
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a novel Monte Carlo algorithm which enhances equilibrization of low-temperature simulations and allows sampling of configurations over a large range of energies. The method is based on a non-Boltzmann probability weight factor and is another version of the so-called generalized-ensemble techniques. The effectiveness of the new approach is demonstrated for the system of a small peptide, an example of the frustrated system with a rugged energy landscape.
description: Latex; ps-files included
Landau diamagnetic response in metals as a Fermi surface effect
Creators: name: Nikolaev, Alexander V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It is demonstrated that the Landau diamagnetism of the free electron gas and a monovalent metal can be considered as a Fermi surface effect. Only relatively small number of electron states close to the Fermi surface are diamagnetically active whereas the majority of the electron states inside the Fermi surface are diamagnetically inert. This partitioning of the occupied electron states is driven by the structure of Landau levels, around which one can introduce magnetic tubes in the reciprocal space. Completely filled magnetic tubes do not change their energy in an applied magnetic field, and only partially occupied magnetic tubes in the neighborhood of the Fermi surface exhibit a diamagnetic response. Using this partitioning of the occupied electron states we derive a general expression for the steady diamagnetic susceptibility, for calculation of which one needs to know the shape of the Fermi surface and the energy gradient on it. The method is applied to alkali metals, whose Fermi surfaces and energy gradients have been obtained from ab initio band structure calculations. It has been found that the Landau diamagnetic susceptibility is anisotropic depending on the direction of the applied magnetic field in respect to the Fermi surface. This effect is more pronounced for Li and Cs, whose Fermi surfaces show a noticeable deformation from the spherical shape. The method opens a new route for ab initio calculations of the Landau diamagnetism of metals or intermetallic compounds. In the case of free electron gas it is shown that this approach also fully describes the oscillatory de Haas - van Alphen part of the diamagnetic susceptibility. Small oscillations of the Fermi energy found in the model are caused by redistribution (inflow or outflow) of electrons from the equatorial region of the Fermi surface.
description: 19 pages, 16 figures, 1 Table. arXiv admin note: substantial text overlap with arXiv:1807.08802, version 2: misprints corrected
Equilibrium and off-equilibrium simulations of chiral-glass order in three-dimensional Heisenberg spin glasses
Creators: name: Kawamura, H.
name: Hukushima, K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Spin-glass and chiral-glass orderings in three-dimensional Heisenberg spin glasses are studied both by equilibrium and off-equilibrium Monte Carlo simulations. Fully isotropic model is found to exhibit a finite-temperature chiral-glass transition without the conventional spin-glass order. Although chirality is an Ising-like quantity from symmetry, universality class of the chiral-glass transition appears to be different from that of the standard Ising spin glass. In the off-equilibrium simulation, while the spin autocorrelation exhibits only an interrupted aging, the chirality autocorrelation persists to exhibit a pronounced aging effect reminisecnt of the one observed in the mean-field model. Effects of random magnetic anisotropy is also studied by the off-equilibrium simulation, in which asymptotic mixing of the spin and the chirality is observed.
description: 15 pages including 8 figures, plain Tex, to appear in Computer Simulation Studies in Condensed Matter Physics XI, Springer, 1998
The Addition Spectrum and Koopmans' Theorem for Disordered Quantum Dots
Creators: name: Walker, Paul N.
name: Montambaux, Gilles
name: Gefen, Yuval
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the addition spectrum of disordered quantum dots containing spinless interacting fermions using the self-consistent Hartree-Fock approximation. We concentrate on the regime r_s >~1, with finite dimensionless conductance g. We find that in this approximation the peak spacing fluctuations do not scale with the mean single particle level spacing for either Coulomb or nearest neighbour interactions when r_s >~1. We also show that Koopmans' approximation to the addition spectrum can lead to errors that are of order the mean level spacing or larger, both in the mean addition spectrum peak spacings, and in the peak spacing fluctuations.
description: 35 pages including 22 figures (eps)
Gravitational waves emitted by solar-type stars excited by orbiting planets
Creators: name: Berti, Emanuele
name: Ferrari, Valeria
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The possibility of exciting the g-modes of a solar-type star as a consequence of the gravitational interaction with a close companion (a planet or a brown dwarf) is studied by a perturbative approach. The amplitude of the emitted gravitational wave is computed and compared with the quadrupole emission of the system, showing that in some cases it can be considerably larger. The effects of radiation reaction are considered to evaluate the timescale of the emission process, and a Roche lobe analysis is used to establish the region where the companion can orbit without being disrupted by tidal interactions with the star.
description: 19 pages, 1 figure, submitted to Phys. Rev. D. Typo in formula (5.4) corrected
Irreducibility of a Universal Prym–Brill–Noether Locus
Creators: name: Bud, Andrei
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: 510 Mathematik

description: For genus $g = \frac {r(r+1)}{2}+1$, we prove that via the forgetful map, the universal Prym–Brill–Noether locus $\mathcal {V}^r_g$ has a unique irreducible component dominating the moduli space $\mathcal {R}_g$ of Prym curves.
Discovery of Radio Emission from the Brown Dwarf LP944-20
Creators: name: Berger, E.
name: Ball, S.
name: Becker, K. M.
name: Clarke, M.
name: Frail, D. A.
name: Fukuda, T. A.
name: Hoffman, I. M.
name: Kulkarni, S. R.
name: Mellon, R.
name: Momjian, E.
name: Murphy, N. W.
name: Teng, S. H.
name: Woodruff, T.
name: Zauderer, B. A.
name: Zavala, R. T.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Brown dwarfs are classified as objects which are not massive enough to sustain nuclear fusion of hydrogen, and are distinguished from planets by their ability to burn deuterium. Old (>10 Myr) brown dwarfs are expected to possess short-lived magnetic fields and, since they no longer generate energy from collapse and accretion, weak radio and X-ray emitting coronae. Several efforts have been undertaken in the past to detect chromospheric activity from the brown dwarf LP944-20 at X-ray and optical wavelengths, but only recently an X-ray flare from this object was detected. Here we report on the discovery of quiescent and flaring radio emission from this source, which represents the first detection of persistent radio emission from a brown dwarf, with luminosities that are several orders of magnitude larger than predicted from an empirical relation between the X-ray and radio luminosities of many stellar types. We show in the context of synchrotron emission, that LP944-20 possesses an unusually weak magnetic field in comparison to active dwarf M stars, which might explain the null results from previous optical and X-ray observations of this source, and the deviation from the empirical relations.
description: Accepted to Nature
Settling the $Z_c(4600)$ in the charged charmonium-like family
Creators: name: Chen, Hua-Xing
name: Chen, Wei
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Very recently LHCb reported the evidence of a new charged charmonium-like structure in the $J/ψπ^-$ invariant mass spectrum near 4600 MeV. In this work we investigate this structure together with three other charged charmonium-like states, the $Z_c(3900)$, $Z_c(4020)$, and $Z_c(4430)$. Our results suggest that the two higher states can be established as the first radial excitations of the two lower ones, all of which have the quantum numbers $J^{PC}=1^{+-}$. We propose to search for more relationship among exotic hadrons in order to better understand them.
description: 2 figures. Comments and suggestions are welcome
Nonlinear conductance of nanowires - A signature of Luttinger liquid effects?
Creators: name: Jonson, M.
name: Krive, I. V.
name: Sandström, P.
name: Shekhter, R. I.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We analyze recent measurements of the room temperature current-voltage characteristics of gold nanowires, whose zero current conductance is quantized in units of $2e^2/h$. A faster than linear increase of current with voltage was observed at low voltages beginning from $V_c=0.1$V. We analyze the nonlinear behavior in terms of a dynamic Coulomb blockade of conducting modes and show that it may be explained as a Luttinger-liquid effect.
description: 13 pages, latex with supplied stylefile, 3 figures in eps format, submitted to Superlattices and Microstructures
A yeast cell cycle model integrating stress, signaling, and physiology
Creators: name: Adler, Stephan O.
name: Spiesser, Thomas W.
name: Uschner, Friedemann
name: Münzner, Ulrike
name: Hahn, Jens
name: Krantz, Marcus
name: Klipp, Edda
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: 570 Biologie

description: The cell division cycle in eukaryotic cells is a series of highly coordinated molecular interactions that ensure that cell growth, duplication of genetic material, and actual cell division are precisely orchestrated to give rise to two viable progeny cells. Moreover, the cell cycle machinery is responsible for incorporating information about external cues or internal processes that the cell must keep track of to ensure a coordinated, timely progression of all related processes. This is most pronounced in multicellular organisms, but also a cardinal feature in model organisms such as baker's yeast. The complex and integrative behavior is difficult to grasp and requires mathematical modeling to fully understand the quantitative interplay of the single components within the entire system. Here, we present a self-oscillating mathematical model of the yeast cell cycle that comprises all major cyclins and their main regulators. Furthermore, it accounts for the regulation of the cell cycle machinery by a series of external stimuli such as mating pheromones and changes in osmotic pressure or nutrient quality. We demonstrate how the external perturbations modify the dynamics of cell cycle components and how the cell cycle resumes after adaptation to or relief from stress.
Constructing KMS states from infinite-dimensional spectral triples
Creators: name: Goffeng, Magnus
name: Rennie, Adam
name: Usachev, Alexandr
Publisher: name: arXiv
Year: 2018
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: K-Theory and Homology (math.KT)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We construct KMS-states from $\mathrm{Li}_1$-summable semifinite spectral triples and show that in several important examples the construction coincides with well-known direct constructions of KMS-states for naturally defined flows. Under further summability assumptions the constructed KMS-state can be computed in terms of Dixmier traces. For closed manifolds, we recover the ordinary Lebesgue integral. For Cuntz-Pimsner algebras with their gauge flow, the construction produces KMS-states from traces on the coefficient algebra and recovers the Laca-Neshveyev correspondence. For a discrete group acting on its Stone-Čech boundary, we recover the Patterson-Sullivan measures on the Stone-Čech boundary for a flow defined from the Radon-Nikodym cocycle.
description: 66 pages
Additional file 1 of Circular RNA SIPA1L1 promotes osteogenesis via regulating the miR-617/Smad3 axis in dental pulp stem cells
Creators: name: Ge, Xingyun
name: Li, Zehan
name: Zhou, Zhou
name: Xia, Yibo
name: Bian, Minxia
name: Yu, Jinhua
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: Additional file 1: Figure S1. Phenotype identification of DPSCs. A. Morphology of primary generation DPSCs B. Flow cytometry showed that DPSCs were negative for hematopoietic markers of CD34 and CD45. C. Flow cytometry demonstrated that DPSCs presented positive for CD29, CD73, CD90 and CD105. D. Trilineage differentiation (adipogenic, osteogenic and chondrogenic differentiations) of DPSCs analyzed by Oil red O staining, Alizarin red S staining and Alcian blue staining respectively. Immunofluorescence assay revealed that cultured DPSCs were positive for STRO-1. Scale bar = 100 μm. Figure S2. CircSIPA1L1 have no effect on DPSCs proliferation. A. Cell cycle phases in different group for proliferation index (PI=G2M+S) by flow cytometry analysis. B-D. EdU assay showed no significant difference in EdU-positive cell ratio between NC group and circSIPA1L1 group or between the Si-NC, Si-circSIPA1L1-1 and Si-circSIPA1L1-3 groups (N.S., P > 0.05). E, F. The influences of circSIPA1L1 on the cell proliferation capability was detected at 450 nm with CCK-8. CCK-8 assay showed no significant difference in cell proliferation between NC group and circSIPA1L1 group or between the Si-NC, Si-circSIPA1L1-1 and Si-circSIPA1L1-3 groups from 0 to 9 days (P>.05). CCK-8, cell counting kit-8; DPSCs, dental pulp stem cells; EdU, 5-ethynyl-20-deoxyuridine assay; PI, propidium iodide. N.S: P > 0.05.
Superflow-Stabilized Nonlinear NMR in Rotating 3He-B
Creators: name: Dmitriev, V. V.
name: Eltsov, V. B.
name: Krusius, M.
name: Ruohio, J. J.
name: Volovik, G. E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Nonlinear spin precession has been observed in 3He-B in large counterflow of the normal and superfluid fractions. The new precessing state is stabilized at high rf excitation level and displays frequency-locked precession over a large range of frequency shifts, with the magnetization at its equilibrium value. Comparison to analytical and numerical calculation indicates that in this state the orbital angular momentum L of the Cooper pairs is oriented transverse to the external magnetic field in a ``non-Leggett'' configuration with broken spin-orbit coupling. The resonance shift depends on the tipping angle theta of the magnetization as omega - omega_L = (Omega_B^2 / 2 omega_L)(cos(theta) - 1/5). The phase diagram of the precessing modes with arbitrary orientation of L is constructed.
description: Revtex file, 5 pages, 4 figures, version submitted to Phys. Rev. Lett
Mexican Hat Wavelet Kernel ELM for Multiclass Classification
Creators: name: Wang, Jie
name: Song, Yi-Fan
name: Ma, Tian-Lei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Kernel extreme learning machine (KELM) is a novel feedforward neural network, which is widely used in classification problems. To some extent, it solves the existing problems of the invalid nodes and the large computational complexity in ELM. However, the traditional KELM classifier usually has a low test accuracy when it faces multiclass classification problems. In order to solve the above problem, a new classifier, Mexican Hat wavelet KELM classifier, is proposed in this paper. The proposed classifier successfully improves the training accuracy and reduces the training time in the multiclass classification problems. Moreover, the validity of the Mexican Hat wavelet as a kernel function of ELM is rigorously proved. Experimental results on different data sets show that the performance of the proposed classifier is significantly superior to the compared classifiers.
description: Published by Computational Intelligence and Neuroscience, 8 pages, 1 figure, 13 tables
On the predictability of Galileo disposal orbits
Creators: name: Gondelach, David J.
name: Armellin, Roberto
name: Wittig, Alexander
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The end-of-life disposal of Galileo satellites is needed to avoid collisions with operational spacecraft and to prevent the generation of space debris. Either disposal in stable graveyard orbits or disposal into the atmosphere exploiting eccentricity growth caused by lunisolar resonances are possible. However, there is a concern about the predictability of MEO orbits because of possible chaotic behaviour caused by the overlap of resonances. In this work, we investigate if Galileo disposal orbits are predictable and if safe disposal is possible under initial uncertainties. For this, we employ finite-time Lyapunov exponents (FTLE) and sensitivity analysis and compare these two methods regarding their practicality for analysing the predictability of disposal orbits. The results show that FTLE are not suitable for determining if an orbit behaves chaotically or not on the time scale of interest. Sensitivity analysis, on the other hand, can be used to quantify the effect of uncertainties on the orbital evolution and to determine if safe disposal is possible. In addition, we show that reliable re-entry disposal is feasible with a limited ΔV budget. However, safe disposal into a graveyard orbit is not always feasible considering uncertainties in the disposal manoeuvre and dynamical model when the available ΔV for disposal is low.
description: 29 pages, 20 figures
The mass in terms of Einstein and Newton
Creators: name: de Lima, Levi Lopes
name: Girão, Frederico
name: Montalbán, Amilcar
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: It is shown that the mass of an asymptotically flat manifold with a noncompact boundary can be computed in terms of limiting surface integrals involving the Einstein tensor of the interior metric and the Newton tensor attached to the second fundamental form of the boundary. This extends to this setting previous results by several authors in the boundaryless case. The method outlined below, which is based on a coordinate-free approach due to Herzlich, also applies to asymptotically hyperbolic manifolds, again with a noncompact boundary, for which a similar notion of mass has been recently considered by Almaraz and the first named author, and both cases will be discussed here.
description: 11 pages; no figures
Implementation and evaluation of age of information in status update systems using a 6TiSCH testbed
Creators: name: Becker, Laura
Publisher: name: TUHH Universitätsbibliothek
Year: 2023
Subjects: subject: Age of Information (AoI)
subject: Communication Network
subject: 6TiSCH
subject: Testbed
subject: Sensor Networks
subject: Wireless Communication
classificationCode: 600
subject: Technik
classificationCode: 620
subject: Ingenieurwissenschaften

description: This thesis describes the implementation of a testbed to execute and analyze dissemination schedules in multi-source, multi-monitor, and multi-hop Status Update Systems (SUS) with respect to Age of Information (AoI). Applications like environmental monitoring or smart grid require SUS that periodically distribute status information, like sensor data, of each node to all network participants. Because the nodes use the status information in decision making, the freshness of information is a key performance indicator, which can be determined using the performance metric AoI. Dissemination schedules define the broadcasting and forwarding of the status updates and have therefore a direct impact on the AoI. In current literature, optimized dissemination schedules are derived using Minimum Connected Dominating Sets (MCDS). To analyze these theoretical dissemination schedules on physical Information and Communication Technology (ICT) platforms, an IPv6 over the Timeslotted Channel Hopping mode of IEEE 802.15.4 (6TiSCH) testbed is implemented based on the Operating System Contiki NG and executed on OpenMote B boards. The testbed concept supports scheduling of the slotframes and the implementation of the application protocol providing the execution of arbitrary dissemination schedules. Afterwards various setups are evaluated considering different age metrics and the Packet Delivery Ratio (PDR). The setups differ in their configuration of the slotframes, the network topology, and the environment interference. The measurement results prove that the testbed is able to execute dissemination schedules for different topologies using a timeslotted communication with channel hopping. Furthermore, the measurement results are used to derive optimized slotframe configurations depending on the application requirements.
Photo-assisted degradation of Rhodamine B by a heterogeneous Fenton–like process：Performance and Kinetics
Creators: name: Hu, Xiaoxia
name: Li, Rong
name: Xing, Yanjun
Publisher: name: Taylor & Francis
Year: 2022
Subjects: Biochemistry
Space Science
Physical Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Virology

description: This study present the degradation of rhodamine B (RhB) by photo Fenton-like (PF-like) process under visible light irradiation (λ＞380 nm) using cobalt phosphate microparticles (CoP-MPs). The effects of initial concentration of RhB, pH value, CoP-MPs dosage, hydrogen peroxide (H2O2) concentration and salts found in textile wastewater (such as NaNO3, Na2SO4 and NaCl) were investigated in detail. It was found that CoP-MPs can maintain high catalytic activity with wide pH value vary from 4 to 8. This indicated that the use of CoP-MPs overcame the low efficiency of Fenton-like reaction at neutral and even weakly alkaline pH. The PF-like degradation of RhB followed a pseudo-first order kinetics in various conditions. Moreover, comparison experimental results showed that the PF-like system has good degradation ability for RhB and methyl blue (MB) solution, but poor for methyl orange (MO) solution. The repeat experiments indicated that chemical structures of CoP-MPs was stable. Furthermore, the Co2+ ions leaching to the solutions were measured by inductively coupled plasma mass spectrometer (ICP-MS). Analysis of UV-vis spectra suggested that RhB was degraded by the formation of a series of N-de-ethylated intermediates followed by cleavage of the whole conjugate chromophore structure.
Quasi-local mass at axially symmetric null infinity
Creators: name: Chen, Po-Ning
name: Wang, Mu-Tao
name: Wang, Ye-Kai
name: Yau, Shing-Tung
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give a brief review of the definition of the Wang-Yau quasilocal mass and discuss the evaluation of which on surfaces of unit size at null infinity of an axi-symmetric spacetime in Bondi-van der Burg-Metzner coordinates.
description: Contribution to MG15
Apresentação - Revista Historiador nº 16
Creators: name: Karls, Cleber Eduardo
name: Schwan Karls, Thaina
Publisher: name: Zenodo
Year: 2023

description: A bela obra de arte que ilustra a capa dessa edição comemorativa aos 15 anos da Revista Historiador é, também, uma amostra da amplitude do dossiê que aqui apresentamos. O Almoço na Grama, de Édouard Manet (1862-1863), ao retratar um fato do cotidiano parisiense oitocentista, também se constrói como um retalho do passado, trazendo à tona da História aspectos que são registros de uma época, embebidos de arte e representações que extravasam o visível. A arte de Manet agrega alimentação, lazer, diversão, relações econômicas, de gênero, de poder. No dossiê “História e entretenimento: diversão, esportes, alimentação e suas interfaces” buscamos, justamente, reunir artigos que tratassem dessa complexidade.
Retired A Stars and Their Companions VIII: 15 New Planetary Signals Around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts
Creators: name: Luhn, Jacob K.
name: Bastien, Fabienne A.
name: Wright, Jason T.
name: Johnson, John A.
name: Howard, Andrew W.
name: Isaacson, Howard
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the discovery of 7 new planets and 8 planet candidates around subgiant stars, as additions to the known sample of planets around "retired A stars" (Johnson et al. 2006). Among these are the possible first 3-planet systems around subgiant stars, HD 163607 and HD 4917. Additionally, we present calculations of possible transit times, durations, depths, and probabilities for all known planets around subgiant (3 < log g < 4) stars, focused on possible transits during the TESS mission. While most have transit probabilities of 1-2%, we find that there are 3 planets with transit probabilities > 9%.
description: 30 pages, 24 figures, accepted for publication in The Astrophysical Journal. Machine-readable tables included in source download. A coauthor was accidentally omitted in version 1. Version 2 also includes clarification on the calculated transit probabilities. Version 3 fixes small errors in Tables 3 and 5
Stochastic description for open quantum systems
Creators: name: Calzetta, Esteban
name: Roura, Albert
name: Verdaguer, Enric
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A linear open quantum system consisting of a harmonic oscillator linearly coupled to an infinite set of independent harmonic oscillators is considered; these oscillators have a general spectral density function and are initially in a Gaussian state. Using the influence functional formalism a formal Langevin equation can be introduced to describe the system's fully quantum properties even beyond the semiclassical regime. It is shown that the reduced Wigner function for the system is exactly the formal distribution function resulting from averaging both over the initial conditions and the stochastic source of the formal Langevin equation. The master equation for the reduced density matrix is then obtained in the same way a Fokker-Planck equation can always be derived from a Langevin equation characterizing a stochastic process. We also show that a subclass of quantum correlation functions for the system can be deduced within the stochastic description provided by the Langevin equation. It is emphasized that when the system is not Markovian more information can be extracted from the Langevin equation than from the master equation.
description: 16 pages, RevTeX, 1 figure (uses epsf.sty). Shortened version. Partially rewritten to emphasize those aspects which are new. Some references added
A Catalog and Atlas of Cataclysmic Variables - The Living Edition
Creators: name: Downes, R. A.
name: Webbink, R. F.
name: Shara, M. M.
name: Ritter, Hans
name: Kolb, Ulrich
name: Duerbeck, Hilmar W.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Catalog and Atlas of Cataclysmic Variables (Edition 1 - 1993) and Edition 2 - 1997) has been a valuable source of information for the cataclysmic variable (CV) community. However, the goal of having a central location for all objects is slowly being lost as each new edition is generated. There can also be a long time delay between new information becoming available on an object and its publication in the catalog. To eliminate these concerns, as well as to make the catalog more accessible, we have created a web site which will contain a ``living'' edition of the catalog. We have also added orbital period information, as well as finding charts for novae, to the catalog.
description: LaTeX, 8 pages, 4 ps-figures, accepted by PASP
The interaction of phosphate and selenite in alkaline soil and accumulation by alfalfa (Medicago sativa L.)
Creators: name: Peng, Qi
name: He, Honghua
name: Fan, Chenbin
name: Wu, Miaomiao
name: Guo, Lei
name: Wang, Xia
name: Zhang, Xingchang
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Marine Biology
subject: Cancer
subject: Plant Biology

description: Selenium (Se) is an essential nutrient for humans and animals, but is toxic at high concentrations in leaves. It is chemically similar to phosphorus (P), an essential plant macronutrient. The objective of this pot experiment was to investigate the effects of P- and Se-application rate on alfalfa growth and P and Se uptake in loessial soil, and reveal the changing processes of soil P and Se fractions. The results indicated that Se concentration in alfalfa was significantly influenced by the interaction of P- and Se-application rate. In the loessial soil, an optimal P- and Se-application rate is 5 mg kg−1 and 2 mg kg−1, respectively for plant growth and the maximum P and Se accumulation in alfalfa. Besides, concentrations of exchangeable Se and organic-matter-bound Se in soil decreased, as the P-application rate increased, whereas concentrations of soluble Se and iron oxide-bound Se increased. The addition of P fertilizer reduced soil pH, affecting the changing processes of soil P and Se fractions, thus promoting the activation of Fe-P and the transformation of exchangeable Se to iron oxide-bound Se. These findings will help in understanding of forage P and Se accumulation and provide the guide for cultivating Se-enriched forage.
EIRENE PPP D8.3 – Evaluation methodology and a preliminary set of KPIs (currently being reviewed by the EC)
Creators: name: Bessems, Jos
Publisher: name: Zenodo
Year: 2024

description: This deliverable describes the development of a model using KPIs to monitor and evaluate the performance of EIRENE RI following the current preparation phase, i.e., the implementation and operation phases via key performance indicators (KPIs).
Origin of Deep Acoustic Sources Associated with Solar Magnetic Structures
Creators: name: Kitiashvili, Irina N.
name: Kosovichev, Alexander G.
name: Mansour, Nagi N.
name: Wray, Alan A.
name: Sandstrom, Timothy A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: It is generally accepted that solar acoustic (p) modes are excited by near-surface turbulent motions, in particular, by downdrafts and interacting vortices in intergranular lanes. Recent analysis of Solar Dynamics Observatory data by (Zhao et al., 2015) revealed fast-moving waves around sunspots, which are consistent with magnetoacoustic waves excited approximately 5 Mm beneath the sunspot. We analyzed 3D radiative MHD simulations of solar magnetoconvection with a self-organized pore-like magnetic structure, and identified more than 600 individual acoustic events both inside and outside of this structure. By performing a case-by-case study, we found that surrounding the magnetic structure, acoustic sources are associated with downdrafts. Their depth correlates with downdraft speed and magnetic fields. The sources often can be transported into deeper layers by downdrafts. The wave front shape, in the case of a strong or inclined downdraft, can be stretched along the downdraft. Inside the magnetic structure, excitation of acoustic waves is driven by converging flows. Frequently, strong converging plasma streams hit the structure boundaries, causing compressions in its interior that excite acoustic waves. Analysis of the depth distribution of acoustic events shows the strongest concentration at 0.2 - 1 Mm beneath the surface for the outside sources and 2.5 - 3 Mm for the excitation event inside the structure.
description: 23 pages, 12 figures
Dynamics of an SO(5) symmetric ladder model
Creators: name: Eder, R.
name: Dorneich, A.
name: Zacher, M. G.
name: Hanke, W.
name: Zhang, Shou-Cheng
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss properties of an exactly SO(5) symmetric ladder model. In the strong coupling limit we demonstrate how the SO(3)-symmetric description of spin ladders in terms of bond Bosons can be upgraded to an SO(5)-symmetric bond-Boson model, which provides a particularly simple example for the concept of SO(5) symmetry. Based on this representation we show that antiferro- magnetism on one hand and superconductivity on the other hand can be understood as condensation of either magnetic or charged Bosons into an RVB vacuum. We identify exact eigenstates of a finite cluster with general multiplets of the SO(5) group, and present numerical results for the single particle spectra and spin/charge correlation functions of the SO(5)-symmetric model and identify `fingerprints' of SO(5) symmetry in these. In particluar we show that SO(5) symmetry implies a `generalized rigid band behavior' of the photoemission spectrum, i.e. spectra for the doped case are rigorously identical to spectra for spin-polarized states at half-filling. We discuss the problem of adiabatic continuity between the SO(5) symmetric ladder and the actual t-J ladder and demonstrate the feasibility of a `Landau mapping' between the two models.
description: Revtex-file, 16 pages with 15 eps-figures. Hardcopies of Figures (or the entire manuscript) obtainable by e-mail request to eder@physik.uni-wuerzburg.de
Delocalization of tightly bound excitons in disordered systems
Creators: name: Berkovits, Richard
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The localization length of a low energy tightly bound electron-hole pair (excitons) is calculated by exact diagonalization for small interacting disordered systems. The exciton localization length (which corresponds to the thermal electronic conductance) is strongly enhanced by electron-electron interactions, while the localization length (pertaining to the charge conductance) is only slightly enhanced. This shows that the two particle delocalization mechanism widely discussed for the electron pair case is more efficient close to the Fermi energy for an electron-hole pair. The relevance to experiment is also discussed.
description: 10 pages, 2 figures - old version was posted by mistake
Thiotricha scioplecta Meyrick 1918
Creators: name: Lee, Ga-Eun
name: Li, Houhun
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Gelechiidae
Thiotricha
Thiotricha scioplecta

description: Thiotricha scioplecta Meyrick, 1918
(Figs 12B, 25H, 36F, 53D, 64E, F, 70B)
 Thiotricha scioplecta Meyrick, 1918: 123; 1925: 103; Gaede, 1937: 307; Clarke, 1969: 468; Ivinskis et al., 1984: 39. TL: Assam, India. TD: NHMUK.
 Type material (Figs 64E, F, 70B). Holotype ♀ INDIA, Assam, Shillong, x.1916, leg. T. B. Fletcher, genitalia slide no. J. F.G.C. 8369 (NHMUK).
 Additional material examined. CHINA: Yunnan Province: 1 ♂, Nankang Forest Station (24.82°N, 98.78°E), 2009 m, Baoshan City, 16.vii.2015, leg. Kaijian Teng and Xia Bai, genitalia slide no. LGE18161; 1 ♂, Gaoligongshan (24.83°N, 98.77°E), 2157 m, Baoshan City, 24.vii.2015, leg. Kaijian Teng and Xia Bai, genitalia slide no. LGE18371. INDIA: 1 ♂, 1 ♀, Shillong, Assam, 1922, leg. T. B. Fletcher, genitalia slide nos. NHMUK010317544, NHMUK010317545 (NHMUK).
 Diagnosis. Adult (Fig. 12B). Wingspan 12.5−14.0 mm. This species has a brownish forewing marked with dark fuscous streaks and patches, but the ground coloration can be darker and the markings are sometimes indistinct. The male labial palpi of T. scioplecta show typical characteristics of the species group, which has long segment I and short segment II bearing expansible hair pencil dorsally. The hair pencil from segment II almost reaches the basal 2/3 of segment III. The male genitalia (Fig. 36F) are very similar to those of T. obvoluta Meyrick (not included in this study; see Clarke 1969: plate 231, fig. 2), but the anellus lobe is stouter and the aedeagus is more pointed at apex in T. scioplecta. The female genitalia (Fig. 53D) are diagnosed by the long ductus bursae coiled in anterior 1/3 and the small corpus bursae with a round signum situated near the posterior margin.
 Variation. The specimens from China are darker than those from India. The wing pattern can be indistinct.
 Distribution. China (Yunnan), India.
 Remarks. Non-type specimens from the type locality (Assam of India) were dissected and illustrated by the first author during a visit to NHMUK. This species is recorded from China for the first time.
description: Published as part of Lee, Ga-Eun & Li, Houhun, 2024, A taxonomic review of Thiotricha Meyrick, 1886 (Lepidoptera, Gelechiidae, Thiotrichinae) from China, with descriptions of 84 new species, pp. 1-222 in Zootaxa 5449 (1) on page 81, DOI: 10.11646/zootaxa.5449.1.1, http://zenodo.org/record/11233121
Music and musical sonification for the rehabilitation of Parkinsonian dysgraphia: Conceptual framework
Creators: name: Véron-Delor, Lauriane
name: Pinto, Serge
name: Eusebio, Alexandre
name: Velay, Jean-Luc
name: Danna, Jérémy
Publisher: name: arXiv
Year: 2018
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Music has been shown to enhance motor control in patients with Parkinson's disease (PD). Notably, musical rhythm is perceived as an external auditory cue that helps PD patients to better control movements. The rationale of such effects is that motor control based on auditory guidance would activate a compensatory brain network that minimizes the recruitment of the defective pathway involving the basal ganglia. Would associating music to movement improve its perception and control in PD? Musical sonification consists in modifying in real-time the playback of a preselected music according to some movement parameters. The validation of such a method is underway for handwriting in PD patients. When confirmed, this study will strengthen the clinical interest of musical sonification in motor control and (re)learning in PD.