cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Baryons in a chiral constituent quark model
Creators: name: Glozman, L. Ya.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the low-energy regime light and strange baryons should be considered as systems of constituent quarks with confining interaction and a chiral interaction that is mediated by Goldstone bosons as well as by vector and scalar mesons. The flavor-spin structure and sign of the short-range part of the spin-spin force reduces the $SU(6)_{FS}$ symmetry down to $SU(3)_F \times SU(2)_S$, induces hyperfine splittings and provides correct ordering of the lowest states with positive and negative parity. There is a cancellation of the tensor force from pseudoscalar- and vector-exchanges in baryons. The spin-orbit interactions from $ρ$-like and $ω$-like exchanges also cancel each other in baryons while they produce a big spin-orbit force in NN system. A unified description of light and strange baryon spectra calculated in a semirelativistic framework is presented. It is demonstrated that the same short-range part of spin-spin interaction between the constituent quarks induces a strong short-range repulsion in $NN$ system when the latter is treated as $6Q$ system. Thus one can achieve a simultaneous understanding of a baryon structure and baryon-baryon interaction in the low-energy regime.
description: 13 pages, Lecture given at 4th Petersburg Winter School on Theoretical Physics in memory of V.N. Gribov
Additional file 1 of Engineering the acyltransferase domain of epothilone polyketide synthase to alter the substrate specificity
Creators: name: Wang, Huimin
name: Liang, Junheng
name: Yue, Qianwen
name: Li, Long
name: Shi, Yan
name: Chen, Guosong
name: Li, Yue-zhong
name: Bian, Xiaoying
name: Zhang, Youming
name: Zhao, Guoping
name: Ding, Xiaoming
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Computational Biology

description: Additional file 1: Table S1. Engineered module-swap fusion sites of hybrid epothilone PKSs. Table S2. Yields of epothilones in mutants of Schlegelella brevitalea DSM 7029. Table S3. Alignment of nine amino acids that differ in EPOAT3 and EPOAT4. Table S4. Primers used for the construction of plasmids and verification of mutant strains. Table S5. Plasmids used in this study. Figure S1. Structural models of reducing domains in wild-type and mutant EPOM9s. Figure S2. Engineering the epothilone PKS by whole-module swapping. Figure S3. Extracted ion chromatogram (EIC) of LC–MS analyses of epothilone production in EPOM4-swap mutants. Figure S4. Multiple sequence alignment of AT domains used in this study. Figure S5. Extracted ion chromatogram (EIC) of LC–MS analyses of epothilone production in some AT-swap mutants to further confirm the production of epothilones. Figure S6. Extracted ion chromatogram (EIC) of LC–MS analyses of epothilone production in AT-swap mutants MMR2012 and MMR2018. Figure S7. HPLC analysis of the extracts from the parental and site-directed mutant strains. Figure S8. Junctions for ER domain deletion constructs. Figure S9. Junctions for DH domain deletion constructs. Figure S10. PCR analysis for the confirmation of AT-swap mutants. Figure S11. PCR analysis for the confirmation of module-exchange mutants. Figure S12. DNA sequences of the PCR products of site-directed mutants. Figure S13. DNA sequences of the PCR products of ΨKR9-KR9-linker deletion mutant (MMR2053) and replacement mutant (MMR2054). Figure S14. Standard curves calculated based on the peak areas of epothilone standards of different concentrations.
The complete mitochondrial genome of the Epaulette Shark, Hemiscyllium ocellatum (Bonnaterre, 1788)
Creators: name: Nevatte, Ryan J.
name: Jennalee A. Clark
name: Williamson, Jane E.
name: Gillings, Michael R.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 60506 Virology
subject: Computational Biology

description: We present the complete mitochondrial genome of the Epaulette Shark Hemiscyllium ocellatum, sequenced with 24 primer sets. The 16,728 bp long circular genome consisted of 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and a non-coding control region. Several protein-coding genes ended with incomplete stop codons (TA- or T–). Phylogenetic analysis indicated that H. ocellatum clusters within the Hemiscylliidae clade but separately from members of its sister genus Chiloscyllium. Utilization of the genome and primer sets presented here will be beneficial to future molecular studies involving H. ocellatum and other members of the Orectolobiformes.
Light vector mesons ($ω$, $ρ$ and $ϕ$) in strong magnetic fields: A QCD sum rule approach
Creators: name: Mishra, Amruta
name: Kumar, Ankit
name: Parui, Pallabi
name: De, Sourodeep
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The mass modifications of the light vector mesons ($ω$, $ρ$ and $ϕ$) are investigated in asymmetric nuclear matter in the presence of strong magnetic fields, using a QCD sum rule approach. These are computed from the medium modifications of the non-strange and strange light quark condensates as well as scalar gluon condensate. The quark and gluon condensates are calculated from the medium changes of the scalar fields (non-strange and strange) and a scalar dilaton field in the magnetized nuclear matter, within a chiral SU(3) model. The scalar dilaton field within the model breaks the scale invariance of QCD and simulates the gluon condensate. The anomalous magnetic moments for the nucleons are taken into account in the present study.
description: 23 pages, 6 figures, to be published in Phys.Rev.C. arXiv admin note: text overlap with arXiv:1405.3508
Skeletons of Prym varieties and Brill--Noether theory
Creators: name: Len, Yoav
name: Ulirsch, Martin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14T05, 14K12, 14H40, 14H45, 14H51

description: We show that the non-Archimedean skeleton of the Prym variety associated to an unramified double cover of an algebraic curve is naturally isomorphic (as a principally polarized tropical abelian variety) to the tropical Prym variety of the associated tropical double cover. This confirms a conjecture by Jensen and the first author. We prove a new upper bound on the dimension of the Prym-Brill-Noether locus for generic unramified double covers of curves with fixed even gonality on the base. Our methods also give a new proof of the classical Prym-Brill-Noether Theorem for generic unramified double covers that is originally due to Welters and Bertram.
description: 32 pages, 7 figures. Accepted for publication in Algebra & Number Theory
First order metamagnetic transition in CeFe$_2$ based pseudobinary alloys
Creators: name: Manekar, Meghmalhar
name: Chaudhary, Sujeet
name: Chattopadhyay, M. K.
name: Singh, Kanwal Jeet
name: Roy, S. B.
name: Chaddah, P.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present results of dc magnetisation study showing that the low temperature antiferromagnetic state in various CeFe$_2$-based pseudobinary alloys can be transformed into ferromagnetic state through a magnetic field induced phase transition. We highlight the presence of hysteresis and phase coexistence across this metamagnetic transition and argue that the observed phase transition is of first order in nature.
description: 11 pages of text and 9 figures ; to appear in Journal of Physics: Condens. Matter
Efficiently computable bounds for magic state distillation
Creators: name: Wang, Xin
name: Wilde, Mark M.
name: Su, Yuan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Magic-state distillation (or non-stabilizer state manipulation) is a crucial component in the leading approaches to realizing scalable, fault-tolerant, and universal quantum computation. Related to non-stabilizer state manipulation is the resource theory of non-stabilizer states, for which one of the goals is to characterize and quantify non-stabilizerness of a quantum state. In this paper, we introduce the family of thauma measures to quantify the amount of non-stabilizerness in a quantum state, and we exploit this family of measures to address several open questions in the resource theory of non-stabilizer states. As a first application, we establish the hypothesis testing thauma as an efficiently computable benchmark for the one-shot distillable non-stabilizerness, which in turn leads to a variety of bounds on the rate at which non-stabilizerness can be distilled, as well as on the overhead of magic-state distillation. We then prove that the max-thauma can be used as an efficiently computable tool in benchmarking the efficiency of magic-state distillation and that it can outperform pervious approaches based on mana. Finally, we use the min-thauma to bound a quantity known in the literature as the "regularized relative entropy of magic." As a consequence of this bound, we find that two classes of states with maximal mana, a previously established non-stabilizerness measure, cannot be interconverted in the asymptotic regime at a rate equal to one. This result resolves a basic question in the resource theory of non-stabilizer states and reveals a difference between the resource theory of non-stabilizer states and other resource theories such as entanglement and coherence.
description: 15 pages, 1 figure; v2 to appear in Physical Review Letters
Patterns of Spontaneous Chiral Symmetry Breaking in the Large-Nc Limit of QCD-Like Theories
Creators: name: Knecht, M.
name: de Rafael, E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown that in vector-like gauge theories, such as QCD, and in the limit of a large number of colours Nc, the ordering pattern of narrow vector and axial-vector states at low energies is correlated with the size of the possible local order parameters of chiral symmetry breaking. This has implications on the underlying dynamics of spontaneous chiral symmetry breaking in QCD, and also on possible values of the parameter S for oblique electroweak corrections, the analogue of the QCD low energy constant L10.
description: 12 pages, 2 figures, plain Latex
Spontaneous parametric down-conversion induced by non-degenerate three-wave mixing in a scanning MEMS micro mirror
Creators: name: Nabholz, Ulrike
name: Schatz, Frank
name: Mehner, Jan E.
name: Degenfeld-Schonburg, Peter
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Scanning micro-mirror actuators are silicon-based oscillatory micro-electro-mechanical systems (MEMS). They enable laser distance measurements for automotive LIDAR applications as well as projection modules for the consumer market. For MEMS applications, the geometric structure is typically designed to serve a number of functional requirements. Most importantly, the mode spectrum contains a single high-Q mode, the drive mode, which per design is expected to yield the only resonantly excited geometric motion during operation. Yet here, we report on the observation of a resonant three-mode excitation via a process known as spontaneous parametric down-conversion. We show that this phenomenon, most extensively studied in the field of nonlinear optics, originates from three-wave coupling induced by geometric nonlinearities. In combination with further Duffing-type nonlinearities, the micro mirror displays a variety of nonlinear dynamical behaviour ranging from stationary state bifurcations to dynamical instabilities observable via amplitude modulations. We are able to explain and emulate all experimental observations using a single fundamental model. In particular, our analysis allows us to understand the conditions for the onset of three-wave down-conversion which if not accounted for in the design of the MEMS structure, can have drastic impact on its functionality even leading to fracture.
description: revised version
Rubus (ser. Semisuberecti) Focke 1914
Creators: name: Beek, Abraham Van De
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rubus

description: Series Semisuberecti Focke (1914: 104).
 Type (designated by Beek 1974: 20):— Rubus affinis Weihe & Nees (1822: 18)
Stem high arching; stamens upright.
description: Published as part of Beek, Abraham Van De, 2021, Rubi Capenses: a further contribution to the knowledge of the genus Rubus (Rosaceae) in South Africa, pp. 1-71 in Phytotaxa 515 (1) on page 54, DOI: 10.11646/phytotaxa.515.1.1, http://zenodo.org/record/8061143
Rubus (subsect. Silvatici) Boulay 1868
Creators: name: Beek, Abraham Van De
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rubus

description: Subsection Silvatici (Müller 1858: 142) Boulay (1868: ii).
 Type:— Rubus silvaticus Weihe & Nees (1824: 41)
Arching, mounding or prostrate blackberries with shiny black fruits.
description: Published as part of Beek, Abraham Van De, 2021, Rubi Capenses: a further contribution to the knowledge of the genus Rubus (Rosaceae) in South Africa, pp. 1-71 in Phytotaxa 515 (1) on page 55, DOI: 10.11646/phytotaxa.515.1.1, http://zenodo.org/record/8061143
Anomalous magnetic splitting of the Kondo resonance
Creators: name: Moore, Joel E.
name: Wen, Xiao-Gang
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The splitting of the Kondo resonance in the density of states of an Anderson impurity in finite magnetic field is calculated from the exact Bethe-ansatz solution. The result gives an estimate of the electron spectral function for nonzero magnetic field and Kondo temperature, with consequences for transport experiments on quantum dots in the Kondo regime. The strong correlations of the Kondo ground state cause a significant low-temperature reduction of the peak splitting. Explicit formulae are found for the shift and broadening of the Kondo peaks. A likely cause of the problems of large-N approaches to spin-1/2 impurities at finite magnetic field is suggested.
description: 4 pages, 2 eps figures; published version
Continuum mechanics with torsion
Creators: name: Peshkov, Ilya
name: Romenski, Evgeniy
name: Dumbser, Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This paper is an attempt to introduce methods and concepts of the Riemann-Cartan geometry largely used in such physical theories as general relativity, gauge theories, solid dynamics, etc. to fluid dynamics in general and to studying and modeling turbulence in particular. Thus, in order to account for the rotational degrees of freedom of the irregular dynamics of small scale vortexes, we further generalize our unified first-order hyperbolic formulation of continuum fluid and solid mechanics which treats the flowing medium as a Riemann-Cartan manifold with zero curvature but non-vanishing torsion. We associate the rotational degrees of freedom of the main field of our theory, the distortion field, to the dynamics of microscopic (unresolved) vortexes. The distortion field characterizes the deformation and rotation of the material elements and can be viewed as anholonomic basis triad with non-vanishing torsion. The torsion tensor is then used to characterize distortion's spin and is treated as an independent field with its own time evolution equation. This new governing equation has essentially the structure of the non-linear electrodynamics in a moving medium and can be viewed as a Yang-Mills-type gauge theory. The system is closed by providing an example of the total energy potential. The extended system describes not only irreversible dynamics (which raises the entropy) due to the viscosity or plasticity effect but it also has dispersive features which are due to the reversible energy exchange (which conserves the entropy) between micro and macro scales. Both the irreversible and dispersive processes are represented by relaxation-type algebraic source terms so that the overall system remains first-order hyperbolic. The turbulent state is then treated as an excitation of the equilibrium laminar state due to the non-linear interplay between dissipation and dispersion.
description: New Section 10 on angular momentum conservation has been added. Energy potential was generalized
Rubus (ser. Hayneani) Trattinick 1823
Creators: name: Beek, Abraham Van De
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rubus

description: Series Hayneani Trattinick (1823: 18).
 Type (designated by Beek 1974: 21):— Rubus cordifolius Weihe & Nees (1822: 21)
High arching brambles; leaves abaxially green or apical ones greyish; primocane eglandular; inflorescence with strong prickles.
description: Published as part of Beek, Abraham Van De, 2021, Rubi Capenses: a further contribution to the knowledge of the genus Rubus (Rosaceae) in South Africa, pp. 1-71 in Phytotaxa 515 (1) on page 55, DOI: 10.11646/phytotaxa.515.1.1, http://zenodo.org/record/8061143
The complete mitochondrial genome of the Epaulette Shark, Hemiscyllium ocellatum (Bonnaterre, 1788)
Creators: name: Nevatte, Ryan J.
name: Jennalee A. Clark
name: Williamson, Jane E.
name: Gillings, Michael R.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 60506 Virology
subject: Computational Biology

description: We present the complete mitochondrial genome of the Epaulette Shark Hemiscyllium ocellatum, sequenced with 24 primer sets. The 16,728 bp long circular genome consisted of 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and a non-coding control region. Several protein-coding genes ended with incomplete stop codons (TA- or T–). Phylogenetic analysis indicated that H. ocellatum clusters within the Hemiscylliidae clade but separately from members of its sister genus Chiloscyllium. Utilization of the genome and primer sets presented here will be beneficial to future molecular studies involving H. ocellatum and other members of the Orectolobiformes.
title: ADCO, Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Cart. 23 (G 127), 310 folios, f. 00519
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2011
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP

description: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00519, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00519, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Vacuum Polarization at Finite Temperature around a Magnetic Flux Cosmic String
Creators: name: Guimarães, M. E. X.
Publisher: name: arXiv
Year: 1995
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a general situation where a charged massive scalar field $ϕ(x)$ at finite temperature interacts with a magnetic flux cosmic string. We determine a general expression for the Euclidean thermal Green's function of the massive scalar field and a handy expression for a massless scalar field. With this result, we evaluate the thermal average $$ and the thermal average of the energy-momentum tensor of a nonconformal massless scalar field.
description: 22 pages, latex, no figures
A remark on the notion of independence of quantum integrals of motion in the thermodynamic limit
Creators: name: Lychkovskiy, Oleg
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Studies of integrable quantum many-body systems have a long history with an impressive record of success. However, surprisingly enough, an unambiguous definition of quantum integrability remains a matter of an ongoing debate. We contribute to this debate by dwelling upon an important aspect of quantum integrability -- the notion of independence of quantum integrals of motion (QIMs). We point out that a widely accepted definition of functional independence of QIMs is flawed, and suggest a new definition. Our study is motivated by the PXP model -- a model of $N$ spins $1/2$ possessing an extensive number of binary QIMs. The number of QIMs which are independent according to the common definition turns out to be equal to the number of spins, $N$. A common wisdom would then suggest that the system is completely integrable, which is not the case. We discuss the origin of this conundrum and demonstrate how it is resolved when a new definition of independence of QIMs is employed.
Superheavy Dark Matter with Discrete Gauge Symmetries
Creators: name: Hamaguchi, K.
name: Nomura, Yasunori
name: Yanagida, T.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that there are discrete gauge symmetries protect naturally heavy X particles from decaying into the ordinary light particles in the supersymmetric standard model. This makes the proposal very attractive that the superheavy X particles constitute a part of the dark matter in the present universe. It is more interesting that there are a class of discrete gauge symmetries which naturally accommodate a long-lived unstable X particle. We find that in some discrete Z_{10} models, for example, a superheavy X particle has lifetime τ_X \simeq 10^{11}-10^{26} years for its mass M_X \simeq 10^{13}-10^{14} GeV. This long lifetime is guaranteed by the absence of lower dimensional operators (of light particles) couple to the X. We briefly discuss a possible explanation for the recently observed ultra-high-energy cosmic ray events by the decay of this unstable X particle.
description: 9 pages, Latex
The action spectrum characterizes closed contact 3-manifolds all of whose Reeb orbits are closed
Creators: name: Cristofaro-Gardiner, Daniel
name: Mazzucchelli, Marco
Publisher: name: arXiv
Year: 2019
Subjects: subject: Symplectic Geometry (math.SG)
subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 53C22, 58E10

description: A classical theorem due to Wadsley implies that, on a connected contact manifold all of whose Reeb orbits are closed, there is a common period for the Reeb orbits. In this paper we show that, for any Reeb flow on a closed connected 3-manifold, the following conditions are actually equivalent: (1) every Reeb orbit is closed; (2) all closed Reeb orbits have a common period; (3) the action spectrum has rank 1. We also show that, on a fixed closed connected 3-manifold, a contact form with an action spectrum of rank 1 is determined (up to pull-back by diffeomorphisms) by the set of minimal periods of its closed Reeb orbits.
description: 18 pages; version 3: we specified that the contact manifolds are required to be connected. To appear in Commentarii Mathematici Helvetici
Electrochemical sensor-based gold nanoparticle/poly(aniline-co-o-toluidine)/graphene oxide nanocomposite modified electrode for hexavalent chromium detection: a real test sample
Creators: name: Hussein, Mahmoud A.
name: Ganash, Aisha A.
name: Alqarni, Sara A.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: This paper presents the fabrication of poly(aniline-co-o-toluidine)/graphene oxide nanocomposite with a general abbreviation [PANI-co-PoT/GOa–e] by well-known in-situ oxidative polymerization method with ultrasonic assistance. These materials were based on variable loading of GO when prepared. The chemical structures of the composite materials were confirmed by characterization technique. The FE-SEM and TEM micrographs were used to investigate the morphological features. Furthermore, FT-IR, XRD, TGA, and electrical conductivity measurements were utilized to estimate its complete performance. All nanocomposites showed CDTmax values in the range of 287.25–463.51 ºC which is significantly higher than that observed for pure copolymer (204.79 ºC). The main focus of this paper is to study the electroselective application using gold nanoparticle as a coating. A steady electroactive modified electrode [AuNPs/PANI-co-PoT/GO] was effectively prepared on a gold electrode (Au) surface using an electroadsorption process for the determination of Cr(VI). The electrochemical attitude of the modified sensor toward the reduction of Cr(VI) was studied by a square wave voltammetry (SWV) and a cyclic voltammetry (CV) technique. The AuNPs/PANI-co-PoT/GO modified electrode displayed a perfect electrochemical activity toward the reduction of Cr(VI). Using an SWV method, the modified electrode gave a linear response to Cr(VI) through the concentration range 5–500 µM with a limit of detection 0.0215 µM. The suggested sensor displayed good stability, sensitivity and selectivity and has exhibited potential for the detection of Cr(VI) in real samples.
Memory footprint reduction for the FFT-based volume integral equation method via tensor decompositions
Creators: name: Giannakopoulos, Ilias I.
name: Litsarev, Mikhail S.
name: Polimeridis, Athanasios G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We present a method of memory footprint reduction for FFT-based, electromagnetic (EM) volume integral equation (VIE) formulations. The arising Green's function tensors have low multilinear rank, which allows Tucker decomposition to be employed for their compression, thereby greatly reducing the required memory storage for numerical simulations. Consequently, the compressed components are able to fit inside a graphical processing unit (GPU) on which highly parallelized computations can vastly accelerate the iterative solution of the arising linear system. In addition, the element-wise products throughout the iterative solver's process require additional flops, thus, we provide a variety of novel and efficient methods that maintain the linear complexity of the classic element-wise product with an additional multiplicative small constant. We demonstrate the utility of our approach via its application to VIE simulations for the Magnetic Resonance Imaging (MRI) of a human head. For these simulations we report an order of magnitude acceleration over standard techniques.
description: 11 pages, 10 figures, 5 tables, 2 algorithms, journal
Best practice recommendations for the use of external telemetry devices on pinnipeds.
Creators: name: Horning, Markus
name: Andrews, Russel D.
name: Bishop, Amanda M.
name: Boveng, Peter L.
name: Costa, Daniel P.
name: Crocker, Daniel E.
name: Haulena, Martin
name: Hindell, Mark
name: Hindle, Allyson G.
name: Holser, Rachel R.
name: Hooker, Sascha K.
name: Hückstäd, Luis A.
name: Johnson, Shawn
name: Lea, Mary‑Anne
name: McDonald, Birgitte I.
name: McMahon, Clive R.
name: Robinson, Patrick W.
name: Sattler, Renae L.
name: Shuer, Courtney R.
name: Steingass, Sheanna M.
name: Thompson, Dave
name: Tuomi, Pamela A.
name: Williams, Cassondra L.
name: Womble, Jamie N.
Publisher: name: UNESCO/IOC
Year: 2019
Subjects: subject: Biotelemtry
subject: Animal tracking
subject: Animal tagging
subject: Animal welfare
subject: Reduction
subject: Refinement
subject: Replacement
subject: Parameter Discipline::Biological oceanography::Birds, mammals and reptiles
subject: Instrument Type Vocabulary::acoustic tracking systems
subject: Instrument Type Vocabulary::tracking tags
subject: Biologging

description: Pinnipeds spend large portions of their lives at sea, submerged, or hauled-out on land, often on remote off-shore islands. This fundamentally limits access by researchers to critical parts of pinniped life history and has spurred the development and implementation of a variety of externally attached telemetry devices (ETDs) to collect information about movement patterns, physiology and ecology of marine animals when they cannot be directly observed. ETDs are less invasive and easier to apply than implanted internal devices, making them more widely used. However, ETDs have limited retention times and their use may result in negative short- and long-term consequences including capture myopathy, impacts to energetics, behavior, and entanglement risk. We identify 15 best practice recommendations for the use of ETDs with pinnipeds that address experimental justification, animal capture, tag design, tag attachment, effects assessments, preparation, and reporting. Continued improvement of best practices is critical within the framework of the Three Rs (Reduction, Refinement, Replacement); these best practice recommendations provide current guidance to mitigate known potential negative outcomes for individuals and local populations. These recommendations were developed specifically for pinnipeds; however, they may also be applicable to studies of other marine taxa. We conclude with four desired future directions for the use of ETDs in technology development, validation studies, experimental designs and data sharing.
Green's Function Monte Carlo for Lattice Fermions: Application to the t-J Model
Creators: name: Hellberg, C. Stephen
name: Manousakis, Efstratios
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop a general numerical method to study the zero temperature properties of strongly correlated electron models on large lattices. The technique, which resembles Green's Function Monte Carlo, projects the ground state component from a trial wave function with no approximations. We use this method to determine the phase diagram of the two-dimensional t-J model, using the Maxwell construction to investigate electronic phase separation. The shell effects of fermions on finite-sized periodic lattices are minimized by keeping the number of electrons fixed at a closed-shell configuration and varying the size of the lattice. Results obtained for various electron numbers corresponding to different closed-shells indicate that the finite-size effects in our calculation are small. For any value of interaction strength, we find that there is always a value of the electron density above which the system can lower its energy by forming a two-component phase separated state. Our results are compared with other calculations on the t-J model. We find that the most accurate results are consistent with phase separation at all interaction strengths.
description: 22 pages, 22 figures
Rubus armeniacus Focke 1874
Creators: name: Beek, Abraham Van De
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rubus
Rubus armeniacus

description: 30. Rubus armeniacus Focke (1874: 183).
 Lectotype (designated by Weber 1986: 222):—s. loc. et dat., Focke s.n. (BREM)
 Note: —The pictures of R. armeniacus in this paper are from plants that are characteristic for dry and warm conditions (Fig. 23A).
 More pictures: —http://rubus-nederland.nl/nl/soorten/systematische-namenlijst/27braam-genus-rubus-l/braam-subgenus-rubus/zwarte-braam-sectie-rubus/boogbraam-subsectie-sylvatici/viltbraam-serie-candicantes-lees- focke/35-r-armeniacus-focke
 Primocane (Figs 23B–C) arching, angular, diam. 4–10 mm, reddish brown in sun, glabrous or with scattered hairs; prickles 3–10 per 5 cm, with 5–13 mm wide, usually red base gradually attenuate, patent, declining or curved, up to 5–11 mm long; stipules 14–17 mm, linear-lanceolate, hairy, eglandular or with very few glands. Leaves palmate 5-foliolate, adaxially (almost) glabrous, abaxially (Fig. 23D) white tomentose and also with longer, simple hairs; serrature irregular, sharp double, slightly periodical with (almost) straight teeth; petiole somewhat shorter than basal leaflets, 6–10 cm, slightly hairy, with (7–)10–14 strong curved or hooked prickles; central leaflet 8–13 cm long, broad ovate, obovate, elliptic or rhombic, sometimes almost orbicular, rather long attenuate, with rounded, emarginate or slightly cordate base, width–length index 0.64–0.87(–0.95), length of petiolule 28–51% of length of leaflet; petiolule of external leaflets 0–7 mm. Flowering branch angular, appressed hairy; prickles 2–13(–18) per 5 cm, strong, patent, declining or curved, up to 7–9 mm long. Leaves 3-(–5-palmate)foliolate; serrature coarse, sharp, periodical, upper ones also adaxially slightly hairy. Inflorescence with leafy base, long, irregular pyramidal or cylindric with obtuse apex, densely hirsute, with rather numerous strong declining prickles; peduncles ascendent, divided above middle, with up to 7 flowers.;bracts eglandular; pedicels (Fig. 23E) firm, 6–25 mm long, hirsute, with 6–10 strong prickles. Flowers: sepals reflexed, grey or white tomentose, often with pricklets; petals large, with short claw, almost orbicular, 9–13 mm long, white or pink; stamens much longer than styles; anthers glabrous or pilose; styles yellowish green or pink; ovaries slightly hairy; receptacle hairy.
 Ecology: —Roadsides, wood margins.
 Distribution in South Africa: — Mpumalanga: massive along the N17 from Lochiel to the Swaziland border; Western Cape: Constantia Nek; Eastern Cape: several places around Hogsback.
description: Published as part of Beek, Abraham Van De, 2021, Rubi Capenses: a further contribution to the knowledge of the genus Rubus (Rosaceae) in South Africa, pp. 1-71 in Phytotaxa 515 (1) on pages 55-57, DOI: 10.11646/phytotaxa.515.1.1, http://zenodo.org/record/8061143
Matroid connectivity and singularities of configuration hypersurfaces
Creators: name: Denham, Graham
name: Schulze, Mathias
name: Walther, Uli
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14N20 (Primary) 05C31, 14B05, 14M12, 81Q30 (Secondary)

description: Consider a linear realization of a matroid over a field. One associates with it a configuration polynomial and a symmetric bilinear form with linear homogeneous coefficients. The corresponding configuration hypersurface and its non-smooth locus support the respective first and second degeneracy scheme of the bilinear form. We show that these schemes are reduced and describe the effect of matroid connectivity: for (2-)connected matroids, the configuration hypersurface is integral, and the second degeneracy scheme is reduced Cohen-Macaulay of codimension 3. If the matroid is 3-connected, then also the second degeneracy scheme is integral. In the process, we describe the behavior of configuration polynomials, forms and schemes with respect to various matroid constructions.
description: 64 pages, 4 figures
Nodes of the superconducting gap probed by electronic Raman scattering in HgBa_{2}CaCu_{2}O_{6+δ} single crystals
Creators: name: Sacuto, A.
name: Combescot, R.
name: Bontemps, N.
name: Monod, P.
name: Viallet, V.
name: Colson, D.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Pure electronic Raman spectra with no phonon structures superimposed to the electronic continuum, are reported, in optimally doped HgBa_{2}CaCu_{2}O_{6+δ} single crystals (T_{c }=126 K). As a consequence, the spectra in the A_{1g }, B_{1g } and B_{2g } symmetries, including the crucial low energy frequency dependence of the electronic scattering, are directly and reliably measured. The B_{2g } and, most strikingly, the B_{1g } spectra exhibit a strong intrinsic linear term, which suggests that the nodes are shifted from the [110] and [1\bar{1}0] directions, a result inconsistent with a pure d_{x^{2}-y^{2}} model.
description: 4 pages, revtex, 2 figures
title: ADCO, Cartulaire de l'abbaye de Saint-Seine (XIIIe siècle), Cart. 165 (10 H 6, ms. 139), 354 pages, f. 0117
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2009
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire de l'abbaye de Saint-Seine (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 165 (10 H 6, ms. 139), 354 pages, f. 0117, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de l'abbaye de Saint-Seine (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 165 (10 H 6, ms. 139), 354 pages, f. 0117, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Saint-Seine
description: Provenance: http://www.wikidata.org/entity/Q2820709
Merits of using density matrices instead of wave functions in the stationary Schrödinger equation for systems with symmetries
Creators: name: Shpagina, E.
name: Uskov, F.
name: Il'in, N.
name: Lychkovskiy, O.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The stationary Schrödinger equation can be cast in the form $H ρ= E ρ$, where $H$ is the system's Hamiltonian and $ρ$ is the system's density matrix. We explore the merits of this form of the stationary Schrödinger equation, which we refer to as~SSE$_ρ$, applied to many-body systems with symmetries. For a nondegenerate energy level, the solution $ρ$ of the SSE$_ρ$ is merely a projection on the corresponding eigenvector. However, in the case of degeneracy $ρ$ is non-unique and not necessarily pure. In fact, it can be an arbitrary mixture of the degenerate pure eigenstates. Importantly, $ρ$ can always be chosen to respect all symmetries of the Hamiltonian, even if each pure eigenstate in the corresponding degenerate multiplet spontaneously breaks the symmetries. This and other features of the solutions of the SSE$_ρ$ can prove helpful by easing the notations and providing an unobscured insight into the structure of the eigenstates. We work out the SSE$_ρ$ for a general system of spins $1/2$ with Heisenberg interactions, and address simple systems of spins $1$. Eigenvalue problem for quantum observables other than Hamiltonian can also be formulated in terms of density matrices. As an illustration, we provide an analytical solution to the eigenproblem ${\bf S}^2 ρ=S(S+1) ρ$, where $\bf S$ is the total spin of $N$ spins $1/2$, and $ρ$ is chosen to be invariant under permutations of spins. This way we find an explicit form of projections to the invariant subspaces of ${\bf S}^2$.
Supersymmetric minisuperspace with non-vanishing fermion number
Creators: name: Csordas, Andras
name: Graham, Robert
Publisher: name: arXiv
Year: 1995
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Lagrangean of $N=1$ supergravity is dimensionally reduced to one (time-like) dimension assuming spatial homogeneity of any Bianchi type within class A of the classification of Ellis and McCallum. The algebra of the supersymmetry generators, the Lorentz generators, the diffeomorphism generators and the Hamiltonian generator is determined and found to close. In contrast to earlier work, infinitely many physical states with non-vanishing even fermion number are found to exist in these models, indicating that minisuperspace models in supergravity may be just as useful as in pure gravity.
description: 4 pages
A tight kernel for computing the tree bisection and reconnection distance between two phylogenetic trees
Creators: name: Kelk, Steven
name: Linz, Simone
Publisher: name: arXiv
Year: 2018
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: In 2001 Allen and Steel showed that, if subtree and chain reduction rules have been applied to two unrooted phylogenetic trees, the reduced trees will have at most 28k taxa where k is the TBR (Tree Bisection and Reconnection) distance between the two trees. Here we reanalyse Allen and Steel's kernelization algorithm and prove that the reduced instances will in fact have at most 15k-9 taxa. Moreover we show, by describing a family of instances which have exactly 15k-9 taxa after reduction, that this new bound is tight. These instances also have no common clusters, showing that a third commonly-encountered reduction rule, the cluster reduction, cannot further reduce the size of the kernel in the worst case. To achieve these results we introduce and use "unrooted generators" which are analogues of rooted structures that have appeared earlier in the phylogenetic networks literature. Using similar argumentation we show that, for the minimum hybridization problem on two rooted trees, 9k-2 is a tight bound (when subtree and chain reduction rules have been applied) and 9k-4 is a tight bound (when, additionally, the cluster reduction has been applied) on the number of taxa, where k is the hybridization number of the two trees.
description: One figure added, two small typos fixed. This version to appear in SIDMA (SIAM Journal on Discrete Mathematics)
Subgaussianity is hereditarily determined
Creators: name: Dodos, Pandelis
name: Tyros, Konstantinos
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: Classical Analysis and ODEs (math.CA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let $n$ be a positive integer, let $\boldsymbol{X}=(X_1,\dots,X_n)$ be a random vector in $\mathbb{R}^n$ with bounded entries, and let $(θ_1,\dots,θ_n)$ be a vector in $\mathbb{R}^n$. We show that the subgaussian behavior of the random variable $θ_1 X_1+\dots +θ_n X_n$ is essentially determined by the subgaussian behavior of the random variables $\sum_{i\in H} θ_i X_i$ where $H$ is a random subset of $\{1,\dots,n\}$.
Overshooting in simulations of compressible convection
Creators: name: Käpylä, Petri J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: (abridged) Context: Convective motions overshooting to regions that are formally convectively stable cause extended mixing. Aims: To determine the scaling of overshooting depth ($d_{\rm os}$) at the base of the convection zone as a function of imposed energy flux ($\mathscr{F}_{\rm n}$) and to estimate the extent of overshooting at the base of the solar convection zone. Methods: Three-dimensional Cartesian simulations of compressible non-rotating convection with unstable and stable layers are used. The simulations use either a fixed heat conduction profile or a temperature and density dependent formulation based on Kramers opacity law. The simulations cover a range of almost four orders of magnitude in the imposed flux. Results: A smooth heat conduction profile (either fixed or through Kramers opacity law) leads to a relatively shallow power law with $d_{\rm os}\propto \mathscr{F}_{\rm n}^{0.08}$ for low $\mathscr{F}_{\rm n}$. A fixed step-profile of the heat conductivity at the bottom of the convection zone leads to a somewhat steeper dependency with $d_{\rm os}\propto \mathscr{F}_{\rm n}^{0.12}$. Experiments with and without subgrid-scale entropy diffusion revealed a strong dependence on the effective Prandtl number which is likely to explain the steep power laws as a function of $\mathscr{F}_{\rm n}$ reported in the literature. Furthermore, changing the heat conductivity artificially below the convection zone is shown to lead to substantial underestimation of overshooting depth. Conclusions: Extrapolating from the results obtained with smooth heat conductivity profiles suggest that the overshooting depth for the solar flux is of the order of $0.2$ pressure scale heights at the base of the convection zone which is two to four times higher than estimates from helioseismology.
description: 15 pages, 13 figures, published in Astron. Astrophys