cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On certain quantifications of Gromov's non-squeezing theorem
Creators: name: Sackel, Kevin
name: Song, Antoine
name: Varolgunes, Umut
name: Zhu, Jonathan J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Symplectic Geometry (math.SG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53D05, 53D35

description: Let $R>1$ and let $B$ be the Euclidean $4$-ball of radius $R$ with a closed subset ${E}$ removed. Suppose that $B$ embeds symplectically into the unit cylinder $\mathbb{D}^2 \times \mathbb{R}^2$. By Gromov's non-squeezing theorem, ${E}$ must be non-empty. We prove that the Minkowski dimension of ${E}$ is at least $2$, and we exhibit an explicit example showing that this result is optimal at least for $R \leq \sqrt{2}$. In an appendix by Joé Brendel, it is shown that the lower bound is optimal for $R < \sqrt{3}$. We also discuss the minimum volume of ${E}$ in the case that the symplectic embedding extends, with bounded Lipschitz constant, to the entire ball.
description: Revision includes an appendix by J. Brendel. Version accepted in Geometry & Topology
Intriguing X-ray and optical variations of the gamma Cas analog HD45314
Creators: name: Rauw, G.
name: Nazé, Y.
name: Smith, M. A.
name: Miroshnichenko, A. S.
name: Fló, J. Guarro
name: Campos, F.
name: Prendergast, P.
name: Danford, S.
name: González-Pérez, J. N.
name: Hempelmann, A.
name: Mittag, M.
name: Schmitt, J. H. M. M.
name: Schröder, K. -P.
name: Zharikov, S. V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A growing number of Be and Oe stars, named the gamma Cas stars, are known for their unusually hard and intense X-ray emission. This emission could either trace accretion by a compact companion or magnetic interaction between the star and its decretion disk. To test these scenarios, we carried out a detailed optical monitoring of HD45314, the hottest member of the class of gamma Cas stars, along with dedicated X-ray observations on specific dates. High-resolution optical spectra were taken to monitor the emission lines formed in the disk, while X-ray spectroscopy was obtained at epochs when the optical spectrum of the Oe star was displaying peculiar properties. Over the last four years, HD45314 has entered a phase of spectacular variations. The optical emission lines have undergone important morphology and intensity changes including transitions between single- and multiple-peaked emission lines as well as shell events, and phases of (partial) disk dissipation. Photometric variations are found to be anti-correlated with the equivalent width of the H-alpha emission. Whilst the star preserved its hard and bright X-ray emission during the shell phase, the X-ray spectrum during the phase of (partial) disk dissipation was significantly softer and weaker. The observed behaviour of HD45314 suggests a direct association between the level of X-ray emission and the amount of material simultaneously present in the Oe disk as expected in the magnetic star-disk interaction scenario.
description: Accepted for publication in A&A
Canonical decompositions and algorithmic recognition of spatial graphs
Creators: name: Friedl, Stefan
name: Munser, Lars
name: Quintanilha, José Pedro
name: Rego, Yuri Santos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We prove that there exists an algorithm for determining whether two piecewise-linear spatial graphs are isomorphic. In its most general form, our theorem applies to spatial graphs furnished with vertex colorings, edge colorings and/or edge orientations. We first show that spatial graphs admit canonical decompositions into blocks, that is, spatial graphs that are non-separable and have no cut vertices, in a suitable topological sense. Then we apply a result of Haken and Matveev in order to algorithmically distinguish these blocks.
description: 57 pages, 16 figures
Quadric bundles and hyperbolic equivalence
Creators: name: Kuznetsov, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We introduce the notion of hyperbolic equivalence for quadric bundles and quadratic forms on vector bundles and show that hyperbolic equivalent quadric bundles share many important properties: they have the same Brauer data; moreover, if they have the same dimension over the base, they are birational over the base and have equal classes in the Grothendieck ring of varieties.
 Furthermore, when the base is a projective space we show that two quadratic forms are hyperbolic equivalent if and only if their cokernel sheaves are isomorphic up to twist, their fibers over a fixed point of the base are Witt equivalent, and, in some cases, certain quadratic forms on intermediate cohomology groups of the underlying vector bundles are Witt equivalent. For this we show that any quadratic form over $\mathbb{P}^n$ is hyperbolic equivalent to a quadratic form whose underlying vector bundle has many cohomology vanishings; this class of bundles, called VLC bundles in the paper, is interesting by itself.
description: 42 pages; v2: minor improvements
Iron-doped g-C3N4 modified CoMoO4 as an efficient heterogeneous catalyst to activate peroxymonosulfate for degradation of organic dye
Creators: name: Ma, Tian
name: Wu, Yunhai
name: Liu, Ningning
name: Tao, Xiaoming
name: Wu, Yunying
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified

description: In this work, iron-doped graphite carbon nitride (Fe-g-C3N4) was integrated with CoMoO4 through a simple hydrothermal route and high temperature calcination to synthesize distinctive composites, aiming to create a promising heterogeneous catalyst to active peroxymonosulfate (PMS) for the degradation of methylene blue (MB), a widely used organic dye. The characterization results, including SEM, EDX, FTIR, XRD and XPS, indicated that the crystal structure and physicochemical properties of CoMoO4-Fe-g-C3N4 have changed after modification, with rougher surface and efficient catalytic activity. The effects of several operational factors (catalyst dosage, oxidant dosage, reaction temperature and initial pH) were also extensively evaluated. Under the condition of CoMoO4-Fe-g-C3N4=0.1 g L−1, oxidant = 2.0 mM, dye = 100 mg/L, T = 25 °C, the MB in the CoMoO4-Fe-g-C3N4/PMS catalytic system can reach almost complete degradation in 90 minutes without pH adjustment. Further, stability experiment showed that the CoMoO4-Fe-g-C3N4 catalysts exhibited high stability and superior reusability, with 80% removal rate even after five concessive cycles of use. Additionally, through radical quenching experiments, it proved that SO4•− radicals were dominant and HO• radicals also worked in the MB degradation process. An underlying mechanism was proposed based on the detection of XPS results that both radical and non-radical degradation pathways existed during MB degradation process. The electron transfer from high-valence iron species (FeIV=O) to MB resulting in the degradation of MB through a non-radical mechanism. From the investigation, the CoMoO4-Fe-g-C3N4 composite was proved to have potential superiority as a promising catalyst for the degradation of refractory organic contaminant removal from water.
Cooling flows and quasars: II. Detailed models of feedback modulated accretion flows
Creators: name: Ciotti, L.
name: Ostriker, J. P.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Most elliptical galaxies contain central black holes (BHs), and most also contain significant amounts of hot gas capable of accreting on to the central BH due to cooling times short compared to the Hubble time. Why therefore do we not see AGNs at the center of most elliptical galaxies rather than in only (at most) a few per cent of them? We propose here the simple idea that feedback from accretion events heats the ambient gas retarding subsequent infall. In this context, we present a class of 1D hydrodynamical evolutionary sequences for the gas flows in elliptical galaxies with a massive central BH. The resulting evolution is characterized by strong oscillations, in which very fast and energetic bursts of the BH are followed by longer periods in which the X-ray galaxy emission comes from the coronal gas. We also allow for departures from spherical symmetry by examining scenarios in which the central engine is either an ADAF or a more conventional accretion disk that is optically thick except for a polar region. In all cases the duty cycle (fraction of the time that the system will be seen as an AGN) is quite small and in the range 10^{-4} - 10^{-3}. Thus, for any reasonable value of the efficiency, the presence of a massive BH at the center of a galaxy seems to be incompatible with the presence of a long-lived cooling flow.
description: 43 pages, 10 figures. Main additions concern observed Compton temperatures and few extra numerical models. Conclusions unchanged. 1 new table and 3 new figures. Accepted for publication on ApJ (main journal)
Engineering topological phases in triple HgTe/CdTe quantum wells
Creators: name: Ferreira, G. J.
name: Candido, D. R.
name: Hernandez, F. G. G.
name: Gusev, G. M.
name: Olshanetsky, E. B.
name: Mikhailov, N. N.
name: Dvoretsky, S. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Quantum wells formed by layers of HgTe between Hg$_{1-x}$Cd$_x$Te barriers lead to two-dimensional (2D) topological insulators, as predicted by the BHZ model. Here, we theoretically and experimentally investigate the characteristics of triple HgTe quantum wells. We describe such heterostructure with a three dimensional $8\times 8$ Kane model, and use its eigenstates to derive an effective 2D Hamiltonian for the system. From these we obtain a phase diagram as a function of the well and barrier widths and we identify the different topological phases composed by zero, one, two, and three sets of edge states hybridized along the quantum wells. The phase transitions are characterized by a change of the spin Chern numbers and their corresponding band inversions. Complementary, transport measurements are experimentally investigated on a sample close to the transition line between the phases with one and two sets of edges states. Accordingly, for this sample we predict a gapless spectrum with low energy bulk conduction bands given by one parabolic and one Dirac band, and with edge states immersed in the bulk valance bands. Consequently, we show that under these conditions, local and non-local transport measurements are inconclusive to characterize a sole edge state conductivity due to bulk conductivity. On the other hand, Shubnikov-de Haas (SdH) oscillations show an excellent agreement with our theory. Particularly, we show that the measured SdH oscillation frequencies agrees with our model and show clear signatures of the coexistence of a parabolic and Dirac bands.
description: 15 pages, 5 figures
Quark Model, Large Order Behavior and Nonperturbative Wave Functions in QCD
Creators: name: Zhitnitsky, Ariel R.
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a few, apparently different (but actually, tightly related) problems: 1. The relation between QCD and valence quark model, 2. The evaluation of the nonlocal condensate $ \la \bar{q}(x)q(0)\ra $, its relation to heavy-light $\bar{q}Q$ quark system and to constituent quark mass, 3. The asymptotic behavior of the nonperturbative pion wave function $ψ(\k, x)$ at $x\rightarrow 0,~1, \k \rightarrow \infty$ and 4. The large order behavior of perturbative series. The analysis is based on such general methods as dispersion relations, duality and PCAC. We use the steepest descent method (also known as semiclassical, or instanton calculus), introduced by Lipatov, in order to calculate the $n-$th moment of the $ψ(\k, x)$ with result $\la\vec{k}_{\perp}^{2n}\ra \sim n!$. This information is converted into the fixing of the asymptotic behavior of $wf$ at large $\k$. This behavior it turns out to be Gaussian commonly used in the phenomenological analyses.The same method determines the asymptotic behavior of the mixed local vacuum condensates $\la\bar{q}G_{μν}^nq\ra\sim n!$ at large $n$ as well as the nonlocal vacuum condensate $ \la \bar{q}(x)q(0)\ra $ which is naturally arises in the description of the heavy-light $\bar{q}Q$ quark system. The relation between nonlocal condensate and constituent quark mass is also discussed.
description: 13 pages +5 figures. Shortened version of the paper which meets Phys.Lett.B length requirement
Low-Rank Matrix Approximations with Flip-Flop Spectrum-Revealing QR Factorization
Creators: name: Feng, Yuehua
name: Xiao, Jianwei
name: Gu, Ming
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 15A18, 15A23, 65F99

description: We present Flip-Flop Spectrum-Revealing QR (Flip-Flop SRQR) factorization, a significantly faster and more reliable variant of the QLP factorization of Stewart, for low-rank matrix approximations. Flip-Flop SRQR uses SRQR factorization to initialize a partial column pivoted QR factorization and then compute a partial LQ factorization. As observed by Stewart in his original QLP work, Flip-Flop SRQR tracks the exact singular values with "considerable fidelity". We develop singular value lower bounds and residual error upper bounds for Flip-Flop SRQR factorization. In situations where singular values of the input matrix decay relatively quickly, the low-rank approximation computed by SRQR is guaranteed to be as accurate as truncated SVD. We also perform a complexity analysis to show that for the same accuracy, Flip-Flop SRQR is faster than randomized subspace iteration for approximating the SVD, the standard method used in Matlab tensor toolbox. We also compare Flip-Flop SRQR with alternatives on two applications, tensor approximation and nuclear norm minimization, to demonstrate its efficiency and effectiveness.
Le rôle de l'information comptable dans les universités : Une clé pour la gestion efficace des ressources
Creators: name: EL KAFSSAOUI, Achraf
name: EL MASTOUR, Rachid
name: EL KEBDANI, Hatim
name: TOUAB, Omar
Publisher: name: Zenodo
Year: 2024
Subjects: Gestion comptable; Universités; ERP (Enterprise Resource Planning); Dématérialisation; Transparence.

description: La gestion comptable dans les universités est essentielle pour assurer transparence financière et efficacité opérationnelle. Dans cet article, nous explorons l'évolution des méthodes comptables au sein des institutions académiques, en mettant en lumière l'importance croissante des nouvelles approches telles que les ERP (Enterprise Resource Planning) et la dématérialisation des processus. Les ERP offrent une gestion intégrée des ressources, simplifiant les opérations financières et accélérant le traitement des transactions. Ils automatisent également le transfert des données vers les états financiers, facilitant ainsi le reporting financier. Parallèlement, la dématérialisation des processus permet la conversion des documents papier en versions électroniques, facilitant leur stockage et leur accessibilité. En combinant ces approches, les universités visent à améliorer leur gestion comptable, favorisant la coordination entre départements, automatisant les tâches récurrentes, réduisant les coûts administratifs et accélérant la génération de rapports financiers précis. Toutefois, l'adoption de ces systèmes requiert une transition progressive et une formation adéquate du personnel. Les ERP et la dématérialisation offrent aux universités des outils pour relever les défis du secteur de l'enseignement supérieur, renforçant ainsi leur position financière et leur capacité à atteindre leurs objectifs stratégiques dans un environnement en constante évolution.
Heterogeneous rarity patterns drive price dynamics in NFT collections
Creators: name: Mekacher, Amin
name: Bracci, Alberto
name: Nadini, Matthieu
name: Martino, Mauro
name: Alessandretti, Laura
name: Aiello, Luca Maria
name: Baronchelli, Andrea
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Computers and Society (cs.CY)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We quantify Non Fungible Token (NFT) rarity and investigate how it impacts market behaviour by analysing a dataset of 3.7M transactions collected between January 2018 and June 2022, involving 1.4M NFTs distributed across 410 collections. First, we consider the rarity of an NFT based on the set of human-readable attributes it possesses and show that most collections present heterogeneous rarity patterns, with few rare NFTs and a large number of more common ones. Then, we analyze market performance and show that, on average, rarer NFTs: (i) sell for higher prices, (ii) are traded less frequently, (iii) guarantee higher returns on investment (ROIs), and (iv) are less risky, i.e., less prone to yield negative returns. We anticipate that these findings will be of interest to researchers as well as NFT creators, collectors, and traders.
Reduced Neutrino Opacities and the SN 1987A Signal
Creators: name: Keil, Wolfgang
name: Janka, H. -Thomas
name: Raffelt, Georg
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Axial-vector interactions of neutrinos and axions with a medium are based on structure functions which cannot be calculated in simple perturbative terms for nuclear densities. We use the SN~1987A neutrino signal duration to estimate the range of allowed neutrino opacities of a supernova (SN) core. We perform numerical simulations of the evolution from the hot, lepton-rich post-collapse stage to the cold, deleptonized neutron star and compare the predicted neutrino signal characteristics with the SN~1987A data. Besides the neutrino opacities we vary the mass, temperature profile, and equation of state of the initial model. Within plausible limits of these quantities the neutrino opacity cannot be much smaller than its ``standard'' value. This limits the width of the spin-density structure function to much smaller values than indicated by a perturbative calculation, implying that bremsstrahlung processes such as axion emission probably saturate at around 10\% nuclear density. A substantial suppression at yet larger densities that might have been expected does not seem to occur.
description: 22 pages (including figures) + 1 separate table, uuencoded and compressed postscript files
Period clustering of the Anomalous X-ray Pulsars and magnetic field decay in magnetars
Creators: name: Colpi, Monica
name: Geppert, Ulrich
name: Page, Dany
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We confront theoretical models for the rotational, magnetic, and thermal evolution of an ultra-magnetized neutron star, or magnetar, with available data on the Anomalous X-ray Pulsars (AXPs). We argue that, if the AXPs are interpreted as magnetars, their clustering of spin periods between 6 and 12 seconds, observed at present in this class of objects, their period derivatives, their thermal X-ray luminosities, and the association of two of them with young supernova remnants, can only be understood globally if the magnetic field in magnetars decays significantly on a time scale of the order of 10^4 years.
description: 5 pages in emulated ApJ style. To appear in The Astrophysical Journal Letters
Spatiotemporal Interpolation Using Graph Neural Network
Creators: name: Yao, Shiqi
name: Huang, Bo
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Spatiotemporal interpolation is a widely used technique for estimating values at unsampled locations using the spatiotemporal dependencies in observations. Classic interpolation models face challenges, however, in dealing with the inherent nonlinearity and nonstationarity of spatiotemporal processes, particularly in sparse and irregularly sampled regions. To overcome these issues, we propose a novel model for spatiotemporal interpolation based on machine learning and graphs, called graph neural network–based spatiotemporal interpolation (GNN-STI). Our approach employs a locally stationary diffusion kernel to capture complex spatiotemporal dependencies in both sample-rich and sample-poor areas using a spatiotemporal Voronoi-adjacency graph structure. We evaluate the performance of GNN-STI against four baseline models using two experiments: a simulation experiment with a sample-rich simulated data set, and a real-world PM2.5 experiment involving both sample-rich and sample-poor areas across China. Experimental results demonstrate that GNN-STI provides accurate interpolations with high efficiency in both experiments compared to the baseline models. Therefore, our research presents an effective and practical model for spatiotemporal interpolation in various situations.
Radiation in Bent Asymmetric Coupled Waveguides
Creators: name: Chamorro-Posada, Pedro
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A numerical study of the radiation in coupled bent waveguides is presented. Such arrangements of curved waveguides in reduced radiation-loss configurations can be used to enhance the quality factor of integrated micro-resonators. 3D full vector computations of the complex modal fields (and propagation constants) and the transient propagation effects have been performed. The results obtained agree qualitatively with former 2D FDTD analyses. At the same time, the calculations presented meet the accuracy requirements for the design of practical implementations that are unattainable with 2D approaches.
Additional file 1 of Causal relationship between rheumatoid arthritis and bronchiectasis: a bidirectional mendelian randomization study
Creators: name: Chen, Zehu
name: Li, Xuegang
name: Shi, Honglei
name: Huang, Yiying
name: Liu, Jing
Publisher: name: figshare
Year: 2024
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy

description: Supplementary Material 1
Synthetic antiferromagnetic coupling between ultra-thin insulating garnets
Creators: name: Gomez-Perez, Juan M.
name: Vélez, Saül
name: McKenzie-Sell, Lauren
name: Amado, Mario
name: Herrero-Martín, Javier
name: López-López, Josu
name: Blanco-Canosa, S.
name: Hueso, Luis E.
name: Chuvilin, Andrey
name: Robinson, Jason W. A.
name: Casanova, Fèlix
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: The use of magnetic insulators is attracting a lot of interest due to a rich variety of spin-dependent phenomena with potential applications to spintronic devices. Here we report ultra-thin yttrium iron garnet (YIG) / gadolinium iron garnet (GdIG) insulating bilayers on gadolinium iron garnet (GGG). From spin Hall magnetoresistance (SMR) and X-ray magnetic circular dichroism measurements, we show that the YIG and GdIG magnetically couple antiparallel even in moderate in-plane magnetic fields. The results demonstrate an all-insulating equivalent of a synthetic antiferromagnet in a garnet-based thin film heterostructure and could open new venues for insulators in magnetic devices. As an example, we demonstrate a memory element with orthogonal magnetization switching that can be read by SMR.
description: 12 pages, 5 figures, Supplemental Material (3 pages)
Flavour changing top quark decay within the minimal supersymmetric standard model
Creators: name: Couture, G.
name: Hamzaoui, C.
name: König, H.
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the results of the gluino and scalar quarks contribution to the flavour changing top quark decay into a charm quark and a photon, gluon or a $Z^0$\ boson within the minimal supersymmetric standard model. We include the mixing of the scalar partners of the left and right handed top quark. This mixing has several effects, the most important of which are to greatly enhance the c Z decay mode for large values of the soft SUSY breaking scalar mass $m_S$\ and to give rise to a GIM--like suppresion in the c $γ$\ mode for certain combinations of parameters.
description: UQAM-PHE-94/08, plain tex, 7 pages, 5 figures not included, available under request via mail or fax
New nitrogen-containing metabolites from cultures of rice false smut pathogen Villosiclava virens
Creators: name: Wang, Ali
name: Li, Peng
name: Han, Peipei
name: Gu, Gan
name: Shan, Tijiang
name: Lai, Daowan
name: Zhou, Ligang
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Two new nitrogen-containing metabolites methyl N-acetyl-O-(4-acetylphenyl)-L-homoserinate (1), dimethyl (1H-indole-3-carbonyl)-D-glutamate (2), and two new natural products, 1,2-O-isopropylidene-D-mannitol (3), N-acetyl-β-methyl-L-phenylalanine (4), along with five known compounds (5–9) were isolated from the rice false smut pathogen Villosiclava virens UV-8b cultured in the solid rice medium. The structures were elucidated by spectroscopic analysis and by comparison of their physical and spectroscopic data with the literature. These metabolites were evaluated for their antibacterial and phytotoxic activities. Compounds 5–7 showed weak inhibition against the tested bacteria, while compounds 4–6 and 9 displayed inhibitory activity against the radicle elongation of rice seeds.
Measuring complete band diagrams of non-ideal heterointerfaces by combining ellipsometry and photoemission spectroscopy
Creators: name: Crovetto, Andrea
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this work, we show that spectroscopic ellipsometry can be combined with photoemission spectroscopy to obtain complete interface band diagrams of non-ideal semiconductor heterointerfaces, such as interfaces between thin-film polycrystalline materials. The non-destructive ellipsometry measurement probes the near-interface band gap of the two semiconductors (including the buried semiconductor) after the interface has formed. This is important in the non-ideal case where chemical processes during interface growth modify the electronic properties of the two separated surfaces. Knowledge of near-interface band gaps improves accuracy in conduction band offset measurements of non-ideal interfaces, and it sheds light on their device physics. Both of those positive outcomes are demonstrated in the Cu$_2$ZnSnS$_4$/CdS interface used here as a case study, where the band gap of both materials decreases by up to 200 meV from the bulk to the near-interface region. This finding reveals a preferential electron-hole recombination channel near the interface, and it yields corrected values for the interfacial conduction band offset.
A trace alkaloid, oleraisoindole A from Portulaca oleracea L. and its anticholinesterase effect
Creators: name: Ma, Yifei
name: Li, Xuetao
name: Zhang, Wenjie
name: Ying, Xixiang
name: Stien, Didier
Publisher: name: Taylor & Francis
Year: 2019
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Pharmacology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: A new trace alkaloid possessing the lignan structure, named oleraisoindole A, was obtained from the extract of the Portulaca oleracea L.. The structure of oleraisoindole A was elucidated by 1D and 2D NMR and high resolution electrospray ionization time-of-flight mass spectroscopic methods. The compound presented an anticholinesterase effect with the IC50 value of 60.4 μM.
Additional file 2: of Taxonomy, virulence genes and antimicrobial resistance of Aeromonas isolated from extra-intestinal and intestinal infections
Creators: name: Zhou, Yanyan
name: Yu, Li
name: Nan, Zheng
name: Zhang, Pingping
name: Kan, Biao
name: Yan, Donghui
name: Su, Jianrong
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Virology
subject: Computational Biology

description: Sequence of primers used for amplification of housekeeping genes and virulence factor genes. (DOC 58 kb)
Experimental and theoretical study of the B(2)$^2 Σ^+ \rightarrow$ X(1)$^2 Σ^+$ system in the KSr molecule
Creators: name: Szczepkowski, Jacek
name: Grochola, Anna
name: Kowalczyk, Paweł
name: Dulieu, Olivier
name: Guerout, Romain
name: Żuchowski, Piotr S.
name: Jastrzebski, Włodzimierz
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Spectral bands for the B(2)$^{2}Σ^{+}\rightarrow$ X(1)$^{2}Σ^{+}$ electronic transition in the doubly-polar open-shell KSr molecule are recorded at moderate resolution using the thermoluminescence technique. The spectra are simulated using three kinds of advanced electronic structure calculations, allowing for an assessment of their accuracy on one hand, and for the derivation of fundamental spectroscopic constants of the X(1)$^{2}Σ^{+}$ KSr ground state and the excited electronic state B(2)$^{2}Σ^{+}$, on the other hand. These results should facilitate further studies aiming at creating ultracold bosonic or fermionic KSr molecules.
description: 7 figures, 3 tables
Website layout and Virtual Exhibition concept
Creators: name: Pradel, Patrick
name: Bibb, Richard
name: Barker, Georgina
Publisher: name: Loughborough University
Year: 2024
Subjects: classificationCode: 36
subject: Creative arts and writing
classificationCode: 39
subject: Education
classificationCode: 40
subject: Engineering

description: This file contains the concept of the website and the virtual exhibition graphic design.
Experimental investigation of a maneuver selection algorithm for vehicles in low adhesion conditions
Creators: name: Lecompte, Olivier
name: Therrien, William
name: Girard, Alexandre
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Winter conditions, characterized by the presence of ice and snow on the ground, are more likely to lead to road accidents. This paper presents an experimental proof of concept, with a 1/5th scale car platform, of a maneuver selection scheme for low adhesion conditions. In the proposed approach, a model-based estimator first processes the high-dimensional sensors data of the IMU, LIDAR and encoders to estimate physically relevant vehicle and ground conditions parameters such as the inertial velocity of the vehicle $v$, the friction coefficient $μ$, the cohesion $c$ and the internal shear angle $ϕ$. Then, a data-driven predictor is trained to predict the optimal maneuver to perform in the situation characterized by the estimated parameters. Experimental results show that it is possible to 1) produce a real-time estimate of the relevant ground parameters, and 2) determine an optimal maneuver based on the estimated parameters between a limited set of maneuvers.
Microbial Diversity in Compost is Critical in Suppressing Plant Fungal Pathogen Survival and Enhancing Cucumber Seedling Growth
Creators: name: Yune Cao
name: Yongqiang Tian
name: Yanming Gao
name: Jianshe Li
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Compost is commonly used in agriculture to improve soil quality and enhance plant growth, which is considered to be related to microbial communities in compost. However, effects of microbial communities in compost on infecting microorganisms have remained underexplored. In this study, cucumber seedlings were grown in sterilized potting mix amended with sterilized straw composts inoculated with suspensions (4 dilution levels including 100, 10−3, 10−6, and 10−9) of the same compost that was not sterilized. Cucumber seedlings were challenged by a pathogenic F. oxysporum f. sp. radicis-cucumerinum. The microbial communities were evaluated by using a 16 S rRNA multiplex 454 pyrosequencing approach. In general, in the presence of F. oxysporum sp. radicis-cucumerinum, increasing dilution level increased disease severity index and decreased plant productivity. The logarithmic numbers of F. oxysporum sp. radicis-cucumerinum were significantly negatively correlated with the bacterial phylum and OTU (Operational taxonomic unit) richness in compost. The promotion of F. oxysporum sp. radicis-cucumerinum survival in compost with low microbial diversity, might be related to loss of antagonistic activity (as reflected by the copy numbers of the genes rhlB and hcnBC), which was caused by loss of microbial diversity in compost. In summary, microbial diversity in compost is critical in suppressing plant pathogen survival and then enhancing cucumber seedling growth.
X-ray variability in a deep, flux limited sample of QSOs
Creators: name: Almaini, O.
name: Lawrence, A.
name: Shanks, T.
name: Edge, A.
name: Boyle, B. J.
name: Georgantopoulos, I.
name: Gunn, K. F.
name: Stewart, G. C.
name: Griffiths, R. E.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of X-ray variability in a flux limited sample of QSOs. Selected from our deep ROSAT survey, these QSOs span a wide range in redshift ($0.10.5$) do not show the anti-correlation with luminosity seen in local AGN. We speculate on the implications of these results for physical models of AGN and their evolution. Finally, we find evidence for X-ray variability in an object classified as a narrow emission-line galaxy, suggesting the presence of an AGN.
description: Accepted for publication in MNRAS. 11 pages, 12 encapsulated figures. Final proof version, with corrections to Equation A5, Figure 10 and references. Also available at http://www.roe.ac.uk/~omar/astro.html
Simple 2.5 GHz time-bin quantum key distribution
Creators: name: Boaron, Alberto
name: Korzh, Boris
name: Houlmann, Raphael
name: Boso, Gianluca
name: Rusca, Davide
name: Gray, Stuart
name: Li, Ming-Jun
name: Nolan, Daniel
name: Martin, Anthony
name: Zbinden, Hugo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a 2.5 GHz quantum key distribution setup with the emphasis on a simple experimental realization. It features a three-state time-bin protocol based on a pulsed diode laser and a single intensity modulator. Implementing an efficient one-decoy scheme and finite-key analysis, we achieve record breaking secret key rates of 1.5 kbps over 200 km of standard optical fiber.
CAN-MM: Multiplexed Message Authentication Code for Controller Area Network message authentication in road vehicles
Creators: name: Oberti, Franco
name: Sanchez, Ernesto
name: Savino, Alessandro
name: Parisi, Filippo
name: Di Carlo, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The automotive market is increasingly profitable for cyberattacks with the constant shift toward fully interconnected vehicles. Electronic Control Units (ECUs) installed on cars often operate in a critical and hostile environment. Hence, both carmakers and governments have decided to support a series of initiatives to mitigate risks and threats belonging to the automotive domain. The Controller Area Network (CAN) is the primary communication protocol in the automotive field, and the integrity of the communication over this network is assured through Message Authentication Codes (MAC). However, limitations in throughput and frame size limit the application of this technique to specific versions of the CAN protocol, leaving several vehicles still unprotected. This paper presents CAN Multiplexed MAC (CAN-MM), a new approach exploiting frequency modulation to multiplex MAC data with standard CAN communication. CAN-MM allows transmitting MAC payloads maintaining full-back compatibility with all versions of the standard CAN protocol. Moreover, multiplexing allows sending DATA and MAC simultaneously.
description: in IEEE Transactions on Vehicular Technology
SUN'IY INTELLEKTNING INSONNING AQLIY FAOLIYATIGA SALBIY TA'SIRLARI
Creators: name: Allaniyazov, Xurshid
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada sun’iy intellekt (SI) texnologiyalarining rivojlanishi inson aqliy faoliyatiga qanday salbiy ta’sir ko‘rsatishi mumkinligi ilmiy-nazariy jihatdan tahlil etiladi. Mustaqil fikrlash, yodlash, e’tibor va ijodkorlik kabi psixologik-mental faoliyat shakllari SIga haddan ziyod bog‘liqlik natijasida pasayishi mumkinligi muhokama qilinadi. Shuningdek, muammoning oldini olish bo‘yicha tavsiyalar ham beriladi.
Additional file 1 of I rely on a little help from my friends: the effect of interpersonal and intrapersonal emotion regulation on the relationship between FOMO and problematic internet use
Creators: name: Flack, Mal
name: Burton, William H
name: Caudwell, Kim M
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Computational Biology

description: Supplementary Material 1: Supplementary Table S1
title:  Intellectual Capital and the University Third Mission: an Evaluation Framework
Creators: name: Frondizi, Rocco
name: Colasanti, Nathalie
name: Fantauzzi, Chiara
name: Fiorani, Gloria
Publisher: name: RomaTrE-Press
Year: 2019

description: Lo scopo di questo lavoro è comprendere il nuovo ruolo delle università nello sviluppo dell'economia della conoscenza attraverso una prospettiva di capitale intellettuale. In effetti, dall'essere entità per la creazione e la diffusione della conoscenza, alle università viene ora chiesto di svolgere un ruolo sempre più imprenditoriale, che include attività di networking, nonché la sostenibilità e l'impegno sociale.
description: Qualitative Research in Intangibles, Intellectual Capital and Integrated Reporting Practices
Equation for the Nakanishi weight function using the inverse Stieltjes transform
Creators: name: Karmanov, V. A.
name: Carbonell, J.
name: Frederico, T.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The bound state Bethe-Salpeter amplitude was expressed by Nakanishi in terms of a smooth weight function g. By using the generalized Stieltjes transform, we derive an integral equation for the Nakanishi function g for a bound state case. It has the standard form g= Vg, where V is a two-dimensional integral operator. The prescription for obtaining the kernel V starting with the kernel K of the Bethe-Salpeter equation is given.
description: 7 pages
A pasting theorem for iterated Segal spaces
Creators: name: Ruit, Jaco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Category Theory (math.CT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 18N10, 55U35, 18N65

description: We introduce a novel notion of pasting shapes for iterated Segal spaces which classify particular arrangements of composing cells in d-uple Segal spaces. Using this formalism, we then continue to prove a pasting theorem for these iterated Segal spaces.
description: 43 pages; v2 final journal version with improvements suggested by the referee
The Evolution of Environmental Quenching Timescales to $z\sim1.6$
Creators: name: Foltz, R.
name: Wilson, G.
name: Muzzin, A.
name: Cooper, M. C.
name: Nantais, J.
name: van der Burg, R. F. J.
name: Cerulo, P.
name: Chan, J.
name: Fillingham, S. P.
name: Surace, J.
name: Webb, T.
name: Noble, A.
name: Lacy, M.
name: McDonald, M.
name: Rudnick, G.
name: Lidman, C.
name: Demarco, R.
name: Hlavacek-Larrondo, J.
name: Yee, H. K. C.
name: Perlmutter, S.
name: Hayden, B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using a sample of 4 galaxy clusters at $1.35 < z < 1.65$ and 10 galaxy clusters at $0.85 < z < 1.35$, we measure the environmental quenching timescale, $t_Q$, corresponding to the time required after a galaxy is accreted by a cluster for it to fully cease star formation. Cluster members are selected by a photometric-redshift criterion, and categorized as star-forming, quiescent, or intermediate according to their dust-corrected rest-frame colors and magnitudes. We employ a "delayed-then-rapid" quenching model that relates a simulated cluster mass accretion rate to the observed numbers of each type of galaxy in the cluster to constrain $t_Q$. For galaxies of mass $M_* \gtrsim 10^{10.5}~ \mathrm{M}_\odot$, we find a quenching timescale of $t_Q=$ 1.24 Gyr in the $z\sim1.5$ cluster sample, and $t_Q=$ 1.50 Gyr at $z\sim1$. Using values drawn from the literature, we compare the redshift evolution of $t_Q$ to timescales predicted for different physical quenching mechanisms. We find $t_Q$ to depend on host halo mass such that quenching occurs over faster timescales in clusters relative to groups, suggesting that properties of the host halo are responsible for quenching high-mass galaxies. Between $z=0$ and $z=1.5$, we find that $t_Q$ evolves faster than the molecular gas depletion timescale and slower than an SFR-outflow timescale, but is consistent with the evolution of the dynamical time. This suggests that environmental quenching in these galaxies is driven by the motion of satellites relative to the cluster environment, although due to uncertainties in the atomic gas budget at high redshift, we cannot rule out quenching due to simple gas depletion.
Non-Universal GUT Corrections to the Soft Terms and their Implications in Supergravity Models
Creators: name: Polonsky, Nir
name: Pomarol, Alex
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Potentially large non-universal corrections to the soft supersymmetry breaking parameters arise from their evolution between the Planck and the grand-unification scales. We detail typical patterns of non-universality in GUT models, as well as elaborate on their propagation to the weak scale and on their low-energy implications. Possible corrections to the different scalar quark and lepton masses and the Higgs and the gaugino-Higgsino sector parameters are described in detail, and new allowed regions of the parameter space are pointed out. In particular, the patterns studied often lead to heavier Higgsinos and $t$-scalar. One-loop GUT threshold corrections to the soft parameters are also discussed and shown to be important.
description: 30 pages, LaTex + RevTex 3, uuencoded postscript file (including 13 figures) is attached. Also available via anonymous ftp from dept.physics.upenn.edu @dir pub\Nir (as a .uu or .ps file). Preprint No. UPR-0627-T
Leader RNA regulates snakehead vesiculovirus replication via interacting with viral nucleoprotein
Creators: name: Qin, Xiangmou
name: Feng, Shuangshuang
name: Zhang, Yanwei
name: Su, Jianguo
name: Lin, Li
name: Zhang, Yong-an
name: Tu, Jiagang
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Leader RNA, a kind of virus-derived small noncoding RNA, has been proposed to play an important role in regulating virus replication, but the underlying mechanism remains elusive. In this study, snakehead vesiculovirus (SHVV), a kind of fish rhabdovirus causing high mortality to the cultured snakehead fish in China, was used to unveil the molecular function of leader RNA. High-throughput small RNA sequencing of SHVV-infected cells showed that SHVV produced two groups of leader RNAs (named legroup1 and legroup2) during infection. Overexpression and knockout experiments reveal that legroup1, but not legroup2, affects SHVV replication. Mechanistically, legroup1-mediated regulation of SHVV replication was associated with its interaction with the viral nucleoprotein (N). Moreover, the nucleotides 6–10 of legroup1 were identified as the critical region for its interaction with the N protein, and the amino acids 1–45 of N protein were proved to confer its interaction with the legroup1. Taken together, we identified two groups of SHVV leader RNAs and revealed a role in virus replication for one of the two types of leader RNAs. This study will help understand the role of leader RNA in regulating the replication of negative-stranded RNA viruses.
title: ADCO, Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Cart. 32 (G 136), 745 folios, f. 0961
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/2012
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: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0961, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0961, 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