cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gravity-driven coatings on curved substrates: a differential geometry approach
Creators: name: Ledda, Pier Giuseppe
name: Pezzulla, Matteo
name: Jambon-Puillet, Etienne
name: Brun, Pierre-Thomas
name: Gallaire, François
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Although the drainage and spreading processes of thin liquid films on substrates have received growing attention during the last decades, the study of three-dimensional cases is limited to a few studies on flat and axisymmetric substrates. In this work, we exploit differential geometry to study the drainage and spreading of thin films on generic curved substrates. We initially investigate the drainage and spreading processes on spheroidal and paraboloidal substrates by employing an asymptotic expansion in the vicinity of the pole and a self-similar approach, finding that the thickness distribution is set by the substrate metric and tangential gravity force components. Spheroids with a large ratio between height and equatorial radius are characterized by a growing thickness moving away from the pole, and vice versa. The non-symmetric coating on a toroidal substrate shows that larger thicknesses and a faster spreading are attained on the inner region than on the outer region of the torus. An ellipsoid with three different axes is chosen as a testing ground for three-dimensional drainage and spreading. Modulations in the drainage solution are observed, with a different variation of the thickness along the two axes. By imposing the conservation of mass, an analytical solution for the average spreading front is obtained. The analytical and numerical results are in good agreement. The resulting drainage solutions show also a good agreement with experimental measurements obtained from the coating of a curing polymer on diverse substrates.
description: 49 pages, 28 figures (including Supporting Information)
Supermassive black hole feeding and feedback observed on sub-parsec scales
Creators: name: Izumi, Takuma
name: Wada, Keiichi
name: Imanishi, Masatoshi
name: Nakanishi, Kouichiro
name: Kohno, Kotaro
name: Kudoh, Yuki
name: Kawamuro, Taiki
name: Baba, Shunsuke
name: Matsumoto, Naoki
name: Fujita, Yutaka
name: Tristram, Konrad R. W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Active galaxies contain a supermassive black hole at their center, which grows by accreting matter from the surrounding galaxy. The accretion process in the central ~10 parsecs has not been directly resolved in previous observations, due to the small apparent angular sizes involved. We observed the active nucleus of the Circinus Galaxy using sub-millimeter interferometry. A dense inflow of molecular gas is evident on sub-parsec scales. We calculate that less than 3% of this inflow is accreted by the black hole, with the rest being ejected by multiphase outflows, providing feedback to the host galaxy. The observations also reveal a dense gas disk surrounding the inflow; the disk is gravitationally unstable which drives the accretion into the central ~1 parsec.
description: First release on Nov 3, 2023 in Science. 32 pages in one column = Main (13 pages, 4 figures) + Supplement (19 pages, 9 figures + 2 tables). This is the accepted version after peer review
Confronting dark fermion with a doubly charged Higgs in the left-right symmetric model
Creators: name: Dey, Shyamashish
name: Ghosh, Purusottam
name: Rai, Santosh Kumar
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a fermionic dark matter (DM) in the left-right symmetric framework by introducing a pair of vector-like (VL) doublets in the particle spectrum. The stability of the DM is ensured through an unbroken $\mathcal{Z}_2$ symmetry. We explore the parameter space of the model compatible with the observed relic density and direct and indirect detection cross sections. The presence of charged dark fermions opens up an interesting possibility for the doubly charged Higgs signal at LHC and ILC. The signal for the doubly charged scalar decaying into the dark sector is analyzed in multilepton final states for a few representative parameter choices consistent with DM observations.
Effect of Green Tea Extract Antioxidant on Dentin Shear Bond Strength and Resin-Tag Penetration Depth after Non-vital Bleaching
Creators: name: Widyandari, Paramita
name: Meidyawati, Ratna
name: Kusumasari, Citra
name: Nyoman Putri Artiningsih, Dewa Ayu
name: Safinaz, Darin
Publisher: name: figshare
Year: 2023
Subjects: Endodontics

description: Effect of Green Tea Extract Antioxidant on Dentin Shear Bond Strength and Resin-Tag Penetration Depth after Non-vital Bleaching
 This study aimed to evaluate the effect of 10% and 35% green tea (10% and 35% GT) extract as an antioxidant after 2 minutes of application on dentin shear bond strength and resin tags penetration depth after non-vital bleaching. This research was conducted at the Chemistry Laboratory, Faculty of Medicine, University of Indonesia, and the Dental Materials Research and Development Laboratory, Faculty of Dentistry, University of Indonesia, in March-April 2022.
 This study was approved by the Ethics Committee (10/Ethical Approval/FKGUI/III/2022; 09/Ethical Exempted/FKGUI/IV/2022) and conducted in accordance with the Declaration of Helsinki. Thirty extracted maxilla premolars for orthodontics reasons, free of caries, fractures, and defects included in this study. The teeth were soaked in a thymol solution (0.1%; pH 7.0) for 1-week post extraction. Then, after 1 week the teeth were placed in 4oC distilled water, and had to be used within 1 month post extraction. The root portion of each tooth was removed 2 mm below the cement-enamel junction with a double-side disc diamond bur (Buehler, Lake Bluff, IL, USA). The coronal portion was sectioned mesiodistally, and the buccal and palatal portions were used, and it is considered as one specimen each portion. The dentin surfaces of specimen were flattened using 600- and 1200-grit sandpaper and polished with felt discs (Arotec, Cotia, SP, Brazil) impregnated with alumina paste (0.5 μm). The specimens were washed ultrasonically in distilled water for 5 minutes to eliminate any residues. For shear bond strength test, the specimens were fixed in a self-cure acrylic 20 mm and for resin tag penetration test the specimens were fix in plasticine 1x1 mm. A mold with a diameter of 2 mm is glued over the specimen in the pulp chamber using plasticine. The specimens were randomly divided into 5 groups (For resin tag penetration test n=6, for shear bond strength test n=5). Group 1: Non-bleached without green tea extract (normal dentin/negative control group), Group 2: Bleached without green tea extract (post bleaching dentin/positive control group), Group 3: Bleached without green tea extract and delay for 2 weeks before being restored (delay 2 weeks). Group 4: Bleached+10% Green tea extract for 2 min (10% GT), Group 5: Bleached+35% Green tea extract for 2 min (35% GT).
 The shear bond strength assessment was done using a Universal Testing Machine with a 0.5 mm/minute cross-head speed. Confocal Laser Scanning Microscopy (CLSM) with a wavelength of 560 nm and a lens magnification of 40x was used to analyze the resin tag penetration by the fluorescence glow of rhodamine B.
Gravitational anomaly in the ferrimagnetic topological Weyl semimetal NdAlSi
Creators: name: Tanwar, Pardeep Kumar
name: Ahmad, Mujeeb
name: Alam, Md Shahin
name: Yao, Xiaohan
name: Tafti, Fazel
name: Matusiak, Marcin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Quantum anomalies are the breakdowns of classical conservation laws that occur in quantum-field theory description of a physical system. They appear in relativistic field theories of chiral fermions and are expected to lead to anomalous transport properties in Weyl semimetals. This includes a chiral anomaly, which is a violation of the chiral current conservation that takes place when a Weyl semimetal is subjected to parallel electric and magnetic fields. A charge pumping between Weyl points of opposite chirality causes the chiral magnetic effect that has been extensively studied with electrical transport. On the other hand, if the thermal gradient, instead of the electrical field, is applied along the magnetic field, then as a consequence of the gravitational (also called the thermal chiral) anomaly an energy pumping occurs within a pair of Weyl cones. As a result, this is expected to generate anomalous heat current contributing to the thermal conductivity. We report an increase of both the magneto-electric and magneto-thermal conductivities in quasi-classical regime of the magnetic Weyl semimetal NdAlSi. Our work also shows that the anomalous electric and heat currents, which occur due to the chiral magnetic effect and gravitational anomalies respectively, are still linked by a 170 years old relation called the Wiedemann-Franz law.
description: 26 pages, 8 figures
Additional file 1 of Experiences of participating in a problem-solving intervention with workplace involvement in Swedish primary health care: a qualitative study from rehabilitation coordinator's, employee's, and manager's perspectives
Creators: name: Karlsson, Ida
name: Kwak, Lydia
name: Axén, Iben
name: Bergström, Gunnar
name: Bültmann, Ute
name: Holmgren, Kristina
name: Brämberg, Elisabeth Björk
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Interview guides.
Phenomenology of a minimal extension of the standard model with a family-dependent gauge symmetry
Creators: name: Van Loi, Duong
name: Nam, Cao H.
name: Van Dong, Phung
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a gauge symmetry extension of the standard model given by $SU(3)_C\otimes SU(2)_L\otimes U(1)_X\otimes U(1)_N\otimes Z_2$ with minimal particle content, where $X$ and $N$ are family dependent but determining the hypercharge as $Y=X+N$, while $Z_2$ is an exact discrete symmetry. In our scenario, $X$ (while $N$ is followed by $X-Y$) and $Z_2$ charge assignments are inspired by the number of fermion families and the stability of dark matter, as observed, respectively. We examine the mass spectra of fermions, scalars, and gauge bosons, as well as their interactions, in presence of a kinetic mixing term between $U(1)_{X,N}$ gauge fields. We discuss in detail the phenomenology of the new gauge boson and the right-handed neutrino dark matter stabilized by $Z_2$ conservation. We obtain parameter spaces simultaneously satisfying the recent CDF $W$-boson mass, electroweak precision measurements, particle colliders, as well as dark matter observables, if the kinetic mixing parameter is not necessarily small.
description: 32 pages, 4 figures, 5 tables; Matches published version in PRD
title: Penny MacGeorge, Late Roman warlords
Creators: name: Lambrecht, Ulrich
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Penny MacGeorge, Late Roman warlords. Oxford Classical Monographs. Oxford University Press, Oxford/New York 2002. XIV, 347 Seiten, 4 Tafeln, 2 Karten.
Supermembrane limit of Yang-Mills theory
Creators: name: Lechtenfeld, Olaf
name: Popov, Alexander D.
Publisher: name: Melville, NY : AIP Publishing
Year: 2016
Subjects: subject: Differential equations
subject: Magnetism
subject: Double-well potential
subject: Electric magnetic
subject: Magnetic solutions
subject: Newtonian dynamics
subject: Ordinary matrix
subject: Spatially homogeneous
subject: SU(2) yang-mills theory
subject: Yang-Mills equation
subject: Ordinary differential equations
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We consider Yang-Mills theory with N = 1 super-translation group in eleven auxiliary dimensions as the structure group. The gauge theory is defined on a direct product manifold Σ3 × S1, where Σ3 is a three-dimensional Lorentzian manifold and S1 is a circle. We show that in the infrared limit, when the metric on S1 is scaled down, the Yang-Mills action supplemented by a Wess-Zumino-type term reduces to the action of an M2-brane. © 2016 AIP Publishing LLC.
Quark-hybrid matter in the cores of massive neutron stars
Creators: name: Orsaria, M.
name: Rodrigues, H.
name: Weber, F.
name: Contrera, G. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using a nonlocal extension of the SU(3) Nambu-Jona Lasinio model, which reproduces several of the key features of Quantum Chromodynamics, we show that mixed phases of deconfined quarks and confined hadrons (quark-hybrid matter) may exist in the cores of neutron stars as massive as around 2.1 M_Sun. The radii of these objects are found to be in the canonical range of $\sim 12-13$ km. According to our study, the transition to pure quark matter does not occur in stable neutron stars, but is shifted to neutron stars which are unstable against radial oscillations. The implications of our study for the recently discovered, massive neutron star PSR J1614-2230, whose gravitational mass is $1.97 \pm 0.04 M_Sun$, are that this neutron star may contain an extended region of quark-hybrid matter at it center, but no pure quark matter.
description: 13 pages, 3 figures
Development and performance of a HemeLB GPU code for human-scale blood flow simulation
Creators: name: Zacharoudiou, I.
name: McCullough, J. W. S.
name: Coveney, P. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In recent years, it has become increasingly common for high performance computers (HPC) to possess some level of heterogeneous architecture - typically in the form of GPU accelerators. In some machines these are isolated within a dedicated partition, whilst in others they are integral to all compute nodes - often with multiple GPUs per node - and provide the majority of a machine's compute performance. In light of this trend, it is becoming essential that codes deployed on HPC are updated to execute on accelerator hardware. In this paper we introduce a GPU implementation of the 3D blood flow simulation code HemeLB that has been developed using CUDA C++. We demonstrate how taking advantage of NVIDIA GPU hardware can achieve significant performance improvements compared to the equivalent CPU only code on which it has been built whilst retaining the excellent strong scaling characteristics that have been repeatedly demonstrated by the CPU version. With HPC positioned on the brink of the exascale era, we use HemeLB as a motivation to provide a discussion on some of the challenges that many users will face when deploying their own applications on upcoming exascale machines.
A Coarse-Grained Model for Predicting RNA Folding Thermodynamics
Creators: name: Denesyuk, Natalia A.
name: Thirumalai, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We present a thermodynamically robust coarse-grained model to simulate folding of RNA in monovalent salt solutions. The model includes stacking, hydrogen bond and electrostatic interactions as fundamental components in describing the stability of RNA structures. The stacking interactions are parametrized using a set of nucleotide-specific parameters, which were calibrated against the thermodynamic measurements for single-base stacks and base-pair stacks. All hydrogen bonds are assumed to have the same strength, regardless of their context in the RNA structure. The ionic buffer is modeled implicitly, using the concept of counterion condensation and the Debye-Hückel theory. The three adjustable parameters in the model were determined by fitting the experimental data for two RNA hairpins and a pseudoknot. A single set of parameters provides good agreement with thermodynamic data for the three RNA molecules over a wide range of temperatures and salt concentrations. In the process of calibrating the model, we establish the extent of counterion condensation onto the single-stranded RNA backbone. The reduced backbone charge is independent of the ionic strength and is 60% of the RNA bare charge at 37 degrees Celsius. Our model can be used to predict the folding thermodynamics for any RNA molecule in the presence of monovalent ions.
Optimisation of VLEO Satellite Geometries for Drag Minimisation and Lifetime Extension
Creators: name: Hild, Franziska
name: Traub, Constantin
name: Pfeiffer, Marcel
name: Beyer, Julian
name: Fasoulas, Stefanos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: 65C05, 65K10, 76M28, 76P05

description: The utilisation of the Very Low Earth Orbit (VLEO) region offers significant application specific, technological, operational, and cost benefits. However, attaining sustained and economically viable VLEO flight is challenging, primarily due to the significant, barely predictable and dynamically changing drag caused by the residual atmosphere, which leads to a rapid deterioration of any spacecraft's orbit unless mitigated by a combination of active and passive techniques. This article addresses one passive method by optimising satellite shapes in order to achieve a minimisation of the atmospheric drag force and thus extension of operational lifetime. Contrary to previous investigations in the field, a constant internal volume is maintained to account for the placement of satellite instruments and payload inside the structure. Moreover, the satellite geometry is not varied heuristically but optimised via a numerical 2D profile optimisation specifically developed for this purpose. From the resulting optimal satellite profiles, 3D satellite bodies are derived, which are then verified via the Direct Simulation Monte Carlo method within the open-source particle code PICLas. In addition, rather unconventional designs, i.e. ring geometries, which are based on the assumption of fully specular particle reflections, are proposed and assessed. The optimised satellite geometries offer pure passive lifetime extensions of up to 46 $\%$ compared to a GOCE like reference body, while the above-mentioned ring geometries achieve passive lifetime extensions of more than 3000 $\%$. Finally, the article presents design recommendations for VLEO satellites in dependence of different surface properties.
Orlandis, José, La Iglesia en la España visigotica y medieval. Ed. EUNSA. Vol. de 400 ps. 225x160. Pamplona. 1976
Creators: name: Correia, Francisco Carvalho
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Chaotic spin chains in AdS/CFT
Creators: name: McLoughlin, Tristan
name: Spiering, Anne
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We consider the spectrum of anomalous dimensions in planar $\mathcal{N}=4$ supersymmetric Yang-Mills theory and its $\mathcal{N}=1$ super-conformal Leigh-Strassler deformations. The two-loop truncation of the integrable $\mathcal{N}=4$ dilatation operator in the SU$(2)$ sector, which is a next-to-nearest-neighbour deformation of the XXX spin chain, is not strictly integrable at finite coupling and we show that it indeed has Wigner-Dyson level statistics. However, we find that it is only weakly chaotic in the sense that the cross-over to chaotic dynamics is slower than for generic chaotic systems. For the Leigh-Strassler deformed theory with generic parameters, we show that the one-loop dilatation operator in the SU$(3)$ sector is chaotic, with a spectrum that is well described by GUE Random Matrix Theory. For the imaginary-$β$ deformation, the statistics are GOE and the transition from the integrable limit is that of a generic system. This provides a weak-coupling analogue of the chaotic dynamics seen for classical strings in the dual background. We further study the spin chains in the semi-classical limit described by generalised Landau-Lifshitz models, which are also known to describe large-angular-momentum string solutions in the dual theory. We show that for the higher-derivative theory following from the two-loop $\mathcal{N}=4$ SU$(2)$ spin chain, the maximal Lyapunov exponent is close to zero, consistent with the absence of chaotic dynamics. For the imaginary-$β$ SU$(3)$ theory, the resulting Landau-Lifshitz model has classically chaotic dynamics at finite values of the deformation parameter.
description: 37 pages, 13 figures
Leveraging Generative AI Models for Synthetic Data Generation in Healthcare: Balancing Research and Privacy
Creators: name: Jadon, Aryan
name: Kumar, Shashank
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The widespread adoption of electronic health records and digital healthcare data has created a demand for data-driven insights to enhance patient outcomes, diagnostics, and treatments. However, using real patient data presents privacy and regulatory challenges, including compliance with HIPAA and GDPR. Synthetic data generation, using generative AI models like GANs and VAEs offers a promising solution to balance valuable data access and patient privacy protection. In this paper, we examine generative AI models for creating realistic, anonymized patient data for research and training, explore synthetic data applications in healthcare, and discuss its benefits, challenges, and future research directions. Synthetic data has the potential to revolutionize healthcare by providing anonymized patient data while preserving privacy and enabling versatile applications.
description: 4 pages, 3 figures
Robustness of adiabatic passage through a quantum phase transition
Creators: name: Fubini, Andrea
name: Falci, Giuseppe
name: Osterloh, Andreas
Publisher: name: Bristol : IOP Publishing Ltd.
Year: 2007
Subjects: subject: cosmological experiments
subject: statistical-mechanics
subject: dynamical semigroups
subject: xy-model
subject: systems
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We analyse the crossing of a quantum critical point based on exact results for the transverse XY model. In dependence of the change rate of the driving field, the evolution of the ground state is studied while the transverse magnetic field is tuned through the critical point with a linear ramping. The excitation probability is obtained exactly and is compared to previous studies and to the Landau-Zener formula, a long time solution for non-adiabatic transitions in two-level systems. The exact time dependence of the excitations density in the system allows us to identify the adiabatic and diabatic regions during the sweep and to study the mesoscopic fluctuations of the excitations. The effect of white-noise is investigated, where the critical point transmutes into a non-Hermitian 'degenerate region'. Besides an overall increase of the excitations during and at the end of the sweep, the most destructive effect of the noise is the decay of the state purity that is enhanced by the passage through the degenerate region.
title: Claudia Kleinwächter, Platzanlagen nordafrikanischer Städte. Untersuchungen zum sogenannten Polyzentrismus in der Urbanistik der römischen Kaiserzeit
Creators: name: Eingartner, Johannes
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Claudia Kleinwächter, Platzanlagen nordafrikanischer Städte. Untersuchungen zum sogenannten Polyzentrismus in der Urbanistik der römischen Kaiserzeit. Beiträge zur Erschließung hellenistischer und kaiserzeitlicher Skulptur und Architektur, Band 20. Verlag Philipp von Zabern, Mainz 2001. XIV und 386 Seiten, 34 Abbildungen, 120 Tafeln, 8 Beilagen.
Optimal Fully Dynamic $k$-Center Clustering for Adaptive and Oblivious Adversaries
Creators: name: Bateni, MohammadHossein
name: Esfandiari, Hossein
name: Fichtenberger, Hendrik
name: Henzinger, Monika
name: Jayaram, Rajesh
name: Mirrokni, Vahab
name: Wiese, Andreas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: In fully dynamic clustering problems, a clustering of a given data set in a metric space must be maintained while it is modified through insertions and deletions of individual points. In this paper, we resolve the complexity of fully dynamic $k$-center clustering against both adaptive and oblivious adversaries. Against oblivious adversaries, we present the first algorithm for fully dynamic $k$-center in an arbitrary metric space that maintains an optimal $(2+ε)$-approximation in $O(k \cdot \mathrm{polylog}(n,Δ))$ amortized update time. Here, $n$ is an upper bound on the number of active points at any time, and $Δ$ is the aspect ratio of the metric space. Previously, the best known amortized update time was $O(k^2\cdot \mathrm{polylog}(n,Δ))$, and is due to Chan, Gourqin, and Sozio (2018). Moreover, we demonstrate that our runtime is optimal up to $\mathrm{polylog}(n,Δ)$ factors. In fact, we prove that even offline algorithms for $k$-clustering tasks in arbitrary metric spaces, including $k$-medians, $k$-means, and $k$-center, must make at least $Ω(n k)$ distance queries to achieve any non-trivial approximation factor. This implies a lower bound of $Ω(k)$ which holds even for the insertions-only setting. We also show deterministic lower and upper bounds for adaptive adversaries, demonstrate that an update time sublinear in $k$ is possible against oblivious adversaries for metric spaces which admit locally sensitive hash functions (LSH) and give the first fully dynamic $O(1)$-approximation algorithms for the closely related $k$-sum-of-radii and $k$-sum-of-diameter problems.
description: arXiv admin note: substantial text overlap with arXiv:2112.07050, arXiv:2112.07217
Coronaria tomentosa Sm.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: R. tomentosa Sm. Cat. 101. 2: Lens (Besse). - 3: Ob Chemin (F.); Orsieres (Bouvier); zwischen Saas-Grundund Fee (A. Keller). Ssp. eu-tomentosa Schalow Var.farinulenta (Crepin) R.Keller- 3:Stalden,Eingangins Saastal (Christ). Forma altae-sralac Christ - 3: Praz-fleuri ob Les Hauderes (F.); Törbel (Stebler); Kapellenweg unter Saas-Fee(Frau Egli-Baumann,Frl. A. KellerundE.Fischer). Forma molliuscula Christ - 3:Zwischen LesHauderes und Praz-fleuri (F.). Forma leucensis Christ - 2: Leukerbad (Marietan). Var.cmerascens (Dumortier) Crepin - 3a:Umgebungder SimplonstrassezwischenGondo und der italienischen Grenze, auchf. subduplicata Borbäs (Becherer). - 4:Twingen im Binntal (Mantz). Var.subglobosa (Sm.) Cariot - l: Ob Vouvry (Paiche); Troistorrents (Briquet); Les Gietes bei St-Maurice (Marietan); La Rasse (Briquet). - 2: Ob Lens (Wolf). - 3: Unterhalb Bovernier (Favrat);Sarreyer (Marietan);obLourtier(Wolf); Fionnay (Marietan); Zermatt (Sonderegger). - 4: Geschinen (Lehmann). Ssp. pseudo-scabriuscula R. Keller (ssp. scabriuscula Schwertschl.) Var. farinosa (Bechstein) Ser. - l: ObSalvan (nach Cottet). Var. cristata Christ - 3: Ob Lourtier (Delasoie,Wolf). Var. pseudo-farinosa R. Keller - 3: Stalden (Vispertal), nicht ganz typisch (Christ).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Primality Test for Numbers of the Form Ap^n+w
Creators: name: Deng, Yingpu
name: Lv, Chang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We propose an algorithm determining the primality of numbers $M=Ap^n+w_n$ where $w_n^{p-1}\equiv1\pmod{p^n}$ and $A
Dielectric properties of Poly(vinylidene fluoride) / CaCu3Ti4O12 composites
Creators: name: Thomasa, P.
name: Varughese, K. T.
name: Dwarakanath, K.
name: Varma, K. B. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The possibility of obtaining relatively high dielectric constant polymer-ceramic composite by incorporating the giant dielectric constant material, CaCu3Ti4O12 (CCTO) in a Poly(vinylidene fluoride) (PVDF) polymer matrix by melt mixing and hot pressing process was demonstrated. The structure, morphology and dielectric properties of the composites were characterized using X ray diffraction, Thermal analysis, Scanning Electron Microscope, and Impedance analyzer. The effective dielectric constant of the composite increased with increase in the volume fraction of CCTO at all the frequencies (100 Hz to 1MHz) under study. The dielectric loss did not show any variation upto 40 % loading of CCTO, but showed an increasing trend beyond 40%. The room temperature dielectric constant as high as 95 at 100Hz has been realized for the composite with 55 Vol % of CCTO, which has increased to about 190 at 150oC. Theoretical models like Maxwells Clausius Mossotti, Effective medium theory, logarithmic law and Yamada were employed to rationalize the dielectric behaviour of the composite and discussed. Keywords: A. Ceramic; A. Polymer matrix composite
Molano, Eduardo, Contribución al estúdio sobre la esencia del matrimonio. Ed. EUNSA. 1 vol. de 265 ps. 145x215. Pamplona. 1977
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
New MOST Photometry of the 55 Cancri System
Creators: name: Dragomir, Diana
name: Matthews, Jaymie M.
name: Winn, Joshua N.
name: Rowe, Jason F.
name: Team, MOST Science
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Since the discovery of its transiting nature, the super-Earth 55 Cnc e has become one of the most enthusiastically studied exoplanets, having been observed spectroscopically and photometrically, in the ultraviolet, optical and infrared regimes. To this rapidly growing data set, we contribute 42 days of new, nearly continuous MOST photometry of the 55 Cnc system. Our analysis of these observations together with the discovery photometry obtained in 2011 allows us to determine the planetary radius (1.990$^{+0.084}_{-0.080}$ R_Earth) and orbital period (0.7365417$^{+0.0000025}_{-0.0000028}$ days) of 55 Cnc e with unprecedented precision. We also followed up on the out-of-transit phase variation first observed in the 2011 photometry, and set an upper limit on the depth of the planet's secondary eclipse, leading to an upper limit on its geometric albedo of 0.6.
description: 6 pages, 3 figures, 1 table; Proceedings IAUS 293: Formation, detection, and characterization of extrasolar habitable planets
Umstrukturierung ultradünner Nickelschichten auf Rh(111) und Rh(110)
Creators: name: Homann, Mathias
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Oberflächen
subject: bimetallischer Modellkatalysator
subject: Musterbildung
subject: Rhodium
subject: Nickel
subject: Nickeloxid
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Die Umstrukturierung ultradünner Nickelschichten wurde auf zwei unterschiedlichen Rhodium Einkristalloberflächen untersucht: Rh(111) und Rh(110). Auf beiden wurde die Oxidation von Nickel mit Sauerstoff und die anschließende Reduktion von NiO durch Wasserstoff studiert. Für die Untersuchungen wurden verschiedene oberflächensensitive Methoden wie Niederenergie Elektronenmikroskopie (LEEM), Röntgenphotoemissionselektronenmikroskopie (XPEEM) und Niederenergie Elektronenbeugung (LEED), Rasterphotoemissions-Elektronenmikroskopie (SPEM) und andere eingesetzt um Oxidation- und Reduktionsprozesse zu verfolgen und die Veränderungen der Oberfläche zu charakterisieren. Es wurde herausgefunden das die Oxidation der bimetallischen Ni/Rh-Oberflächen mit der Bildung von 3D-NiO und der Entnetzung der Oberfläche verbunden ist, dieser Prozess ist durch die Reduktion mit Wasserstoff nahezu vollständig reversibel. Diese Ent- und Benetzungsprozesse sind die Ursache für das Auftreten chemischer Wellenmuster bei der Wasserbildungsreaktion aus den Elementen.
Vacuum free energy, quark condensate shifts and magnetization in three-flavor chiral perturbation theory to $\mathcal{O}(p^6)$ in a uniform magnetic field
Creators: name: Adhikari, Prabal
name: Strümke, Inga
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study three-flavor QCD in a uniform magnetic field using chiral perturbation theory ($χ$PT). We construct the vacuum free energy density, quark condensate shifts induced by the magnetic field and the renormalized magnetization to $\mathcal{O}(p^6)$ in the chiral expansion. We find that the calculation of the free energy is greatly simplified by cancellations among two-loop diagrams involving charged mesons. In comparing our results with recent $2+1$-flavor lattice QCD data, we find that the light quark condensate shift at $\mathcal{O}(p^6)$ is in better agreement than the shift at $\mathcal{O}(p^4)$. We also find that the renormalized magnetization, due to its smallness, possesses large uncertainties at $\mathcal{O}(p^{6})$ due to the uncertainties in the low-energy constants.
description: 23 pages, 3 sets of figures, matches published version
Diffractive semi-hard production of a $J/ψ$ or a $Υ$ from single-parton fragmentation plus a jet in hybrid factorization
Creators: name: Celiberto, Francesco Giovanni
name: Fucilla, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the inclusive hadroproduction of a heavy quarkonium ($J/ψ$ or $Υ$), in association with a light-flavored jet, as a testing ground for the semi-hard regime of QCD. Our theoretical setup is the hybrid high-energy and collinear factorization, where the standard collinear approach is supplemented by the $t$-channel resummation of leading and next-to-leading energy logarithms à la BFKL. We present predictions for rapidity and azimuthal-angle differential distributions, hunting for stabilizing effects of the high-energy series under higher-order corrections. Our reaction represents an additional channel to test the production mechanisms of quarkonia at high energies and large transverse momenta and to possibly shed light on the transition region from heavy-quark pair production to single-parton fragmentation of $J/ψ$ and $Υ$ states.
description: 42 pages, 7 figures, 288 references, version published in Eur. Phys. J C
Self-healing networks: redundancy and structure
Creators: name: Quattrociocchi, Walter
name: Caldarelli, Guido
name: Scala, Antonio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We introduce the concept of self-healing in the field of complex networks. Obvious applications range from infrastructural to technological networks. By exploiting the presence of redundant links in recovering the connectivity of the system, we introduce self-healing capabilities through the application of distributed communication protocols granting the "smartness" of the system. We analyze the interplay between redundancies and smart reconfiguration protocols in improving the resilience of networked infrastructures to multiple failures; in particular, we measure the fraction of nodes still served for increasing levels of network damages. We study the effects of different connectivity patterns (planar square-grids, small-world, scale-free networks) on the healing performances. The study of small-world topologies shows us that the introduction of some long-range connections in the planar grids greatly enhances the resilience to multiple failures giving results comparable to the most resilient (but less realistic) scale-free structures.
Spin-charge correlations in finite one-dimensional multi-band Fermi systems
Creators: name: Becker, J. M.
name: Koutentakis, G. M.
name: Schmelcher, P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate spin-charge separation of a spin-1/2 Fermi system confined in a triple well where multiple bands are occupied. We assume that our finite fermionic system is close to fully spin polarized while being doped by a hole and an impurity fermion with opposite spin. Our setup involves ferromagnetic couplings among the particles in different bands, leading to the development of strong spin-transport correlations in an intermediate interaction regime. Interactions are then strong enough to lift the degeneracy among singlet and triplet spin configurations in the well of the spin impurity but not strong enough to prohibit hole-induced magnetic excitations to the singlet state. Despite the strong spin-hole correlations, the system exhibits spin-charge deconfinement allowing for long-range entanglement of the spatial and spin degrees of freedom.
description: 19 pages, 9 figures
Additional file 1 of Combination effects of amino acid transporter LAT1 inhibitor nanvuranlat and cytotoxic anticancer drug gemcitabine on pancreatic and biliary tract cancer cells
Creators: name: Nishikubo, Kou
name: Ohgaki, Ryuichi
name: Liu, Xingming
name: Okanishi, Hiroki
name: Xu, Minhui
name: Endou, Hitoshi
name: Kanai, Yoshikatsu
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 1: Figure S1. Combination effects of gemcitabine and nanvuranlat on cell growth by sequential treatments. A The treatment schedule of single or simultaneous treatments with gemcitabine and nanvuranlat. According to the schedule, MIA PaCa-2 and KKU-055 cells were treated with GEM or NANV, or both. After 36 h of the first treatment, the medium was removed, washed once with 100 μL of the medium, and replaced with fresh medium containing drugs for a further 36 h of treatment. B Cell growth inhibition was analyzed by Cell Counting Kit-8 after 72 h of the treatments. Cells were treated with drugs at the following concentrations: MIA PaCa-2 (GEM; 13 nmol/L, NANV; 3 μmol/L), KKU-055 (GEM; 10 nmol/L, NANV; 0.9 μmol/L). Data were normalized for non-treated controls and shown as mean ± SEM (n =8). Statistical significance was evaluated by one-way ANOVA followed by Tukey's post-test.
WIMP decay as a possible Warm Dark Matter model
Creators: name: Parichha, Abineet
name: Sethi, Shiv
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Weakly Interacting Massive Particles(WIMPs) have long been the favored CDM candidate in the standard $Λ$CDM model. However, owing to great improvement in the experimental sensitivity in the past decade, some parameter space of the SUSY-based WIMP model is ruled out. In addition, WIMP as the CDM particle is also at variance with other astrophysical observables at small scales. We consider a model that addresses both these issues. In the model, the WIMP decays into a massive particle and radiation. We study the background evolution and the first order perturbation theory (coupled Einstein-Boltzmann equations) for this model and show that the dynamics can be captured by a single parameter $r=m_L/q$, which is the ratio of the lighter mass and the comoving momentum of the decay particle. We incorporate the relevant equations in the existing Boltzmann code CLASS to compute the matter power spectra and CMB angular power spectra. The decaying WIMP model is akin to a non-thermal Warm Dark Matter(WDM) model and suppresses matter power at small scales, which could alleviate several issues that plague the CDM model. We compare the predictions of the model with CMB, galaxy clustering, and high-z HI data. Both these data sets yield $r\gtrsim 10^6$, which can be translated into the bounds on other parameters. In particular, we obtain the following lower bounds on the thermally-averaged self-annihilation cross-section of WIMPs $\langle σv \rangle$, and the lighter mass $m_L$: $\langle σv \rangle \gtrsim 4.9\times 10^{-34} \, \rm cm^3 \, sec^{-1}$ and $m_L \gtrsim 2.4 \, \rm keV$. The lower limit on $m_L$ is comparable to constraints on the mass of thermally-produced WDM particle. The limit on the self-annihilation cross-section greatly expands the available parameter space as compared to the stable WIMP scenario.
description: 26 pages, 7 figures, accepted for publication in JCAP
Vários, Persona y Derecho. Revista de fundamentación de las instituciones jurídicas. Vol. II (1975). La vida humana. Vol. III (1976). Ordem social y violência. Ed. EUNSA
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Nonlinear Charged Black Holes in Anti-de Sitter Quasi-Topological Gravity
Creators: name: Ghanaatian, Mohammad
name: Bazrafshan, Afsaneh
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we present the static charged solutions of quartic quasitopological gravity in the presence of a nonlinear electromagnetic field. Two branches of these solutions present black holes with one or two horizons or a naked singularity depending on the charge and mass of the black hole. The entropy of the charged black holes of fourth order quasitopological gravity through the use of Wald formula is computed and the mass, temperature and the charge of these black holes are found as well. We show that black holes with spherical, flat and hyperbolical horizon in quasitopological gravity are stable for any allowed quasitopological parameters.
description: 13 pages, 5 figures. arXiv admin note: text overlap with arXiv:0903.4260 by other authors
Cesium atoms in cryogenic argon matrix
Creators: name: Battard, Thomas
name: Lahs, Sebastian
name: Crépin, Claudine
name: Comparat, Daniel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: This paper presents both experimental and theoretical investigations into the spectroscopy of dilute cesium (Cs) atoms within a solid argon (Ar) matrix at cryogenic temperatures. This system is relevant for matrix isolation spectroscopy and in particular for recently proposed methods for investigating phenomena that extend beyond the standard model of particle physics. We record absorption spectra at various deposition temperatures and examine the evolution of these spectra post-deposition with respect to temperature changes. Taking advantage of Cs-Ar and Ar-Ar pairwise interaction potentials, we conduct a stability study of trapping sites, which indicates a preference for T$_{\rm d}$ (tetrahedral, 4 vacancies) and O$_{\rm h}$ (cubic, 6 vacancies) symmetries. By implementing a mean-field analysis of the long-range Cs(6s,6p)-Ar-Ar triple dipole interaction, combined with a temperature-dependent shift in zero point energy, we propose effective Cs(6s,6p)-Ar pairwise potentials. Upon integrating these pairwise potentials with spin-orbit coupling, we achieve a satisfactory agreement between the observed and simulated absorption line positions. The observed line broadening is reasonably well reproduced by a semi-classical thermal Monte Carlo approach based on Mulliken-type differences between excited and ground potential curves. Additionally, we develop a simple, first-order crystal field theory featuring only 6 interaction mode coordinates. It uses the reflection approximation and incorporates quantized (phonon) normal modes. This produces a narrow triplet structure but not the observed amount of splitting.
Insights into the equation of state of neutron-rich matter since GW170817
Creators: name: Piekarewicz, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The historical detection of gravitational waves emitted from the binary neutron star merger GW170817 has opened the new era of multi-messenger astronomy. Since then, many other significant discoveries -- both on heaven and earth -- are providing new clues into the behavior of neutron-rich matter. It is the goal of this article to illustrate how the remarkable progress made during the last few years is spearheading the field into the golden age of neutron-star physics.
description: 9 pages, 5 figures, submitted to the proceedings of the XLIV Brazilian Workshop on Nuclear Physics
String theories as the adiabatic limit of Yang-Mills theory
Creators: name: Popov, Alexander D.
Publisher: name: College Park, MD : American Physical Society
Year: 2015
Subjects: subject: Differential equations
subject: Magnetism
subject: Double-well potential
subject: Electric magnetic
subject: Magnetic solutions
subject: Newtonian dynamics
subject: Ordinary matrix
subject: Spatially homogeneous
subject: SU(2) yang-mills theory
subject: Yang-Mills equation
subject: Ordinary differential equations
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We consider Yang-Mills theory with a matrix gauge group G on a direct product manifold M=Σ2×H2, where Σ2 is a two-dimensional Lorentzian manifold and H2 is a two-dimensional open disc with the boundary S1=∂H2. The Euler-Lagrange equations for the metric on Σ2 yield constraint equations for the Yang-Mills energy-momentum tensor. We show that in the adiabatic limit, when the metric on H2 is scaled down, the Yang-Mills equations plus constraints on the energy-momentum tensor become the equations describing strings with a world sheet Σ2 moving in the based loop group ΩG=C∞(S1,G)/G, where S1 is the boundary of H2. By choosing G=Rd−1,1 and putting to zero all parameters in ΩRd−1,1 besides Rd−1,1, we get a string moving in Rd−1,1. In another paper of the author, it was described how one can obtain the Green-Schwarz superstring action from Yang-Mills theory on Σ2×H2 while H2 shrinks to a point. Here we also consider Yang-Mills theory on a three-dimensional manifold Σ2×S1 and show that in the limit when the radius of S1 tends to zero, the Yang-Mills action functional supplemented by a Wess-Zumino-type term becomes the Green-Schwarz superstring action. © 2015 American Physical Society.