cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anti-inflammatory and anticancer activities of erythrodiol-3-acetate and 2,4-di-tert-butylphenol isolated from Humboldtia unijuga
Creators: name: Nair, Reshma V. R.
name: Jayasree, Devi Velayudhan
name: Prabath Gopalakrishnan Biju
name: Sabulal Baby
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Physiology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Humboldtia unijuga Bedd., endemic to Agasthyamala in Western Ghats in India, is traditionally used by local Kani tribes for chicken pox, head ache and snake bite. This study reports the isolation of erythrodiol-3-acetate (HU-1) and 2,4-di-tert-butylphenol (HU-2) from H. unijuga roots and their anti-inflammatory and anticancer activities in macrophage, skin and breast cancer cell lines. Effects of HU-1 and HU-2 treatments (50, 100 µg/mL) on gene expression profiles of pro-inflammatory cytokines TNFα, IL-6 and IL-1β, and apoptosis genes p53 and caspase 7 were studied. HU-2 exerted a significantly superior anti-inflammatory effect compared to HU-1 in all three pro-inflammatory genes. HU-2 showed a superior dose dependent anticancer effect through activation of p53 gene over HU-1 in MCF-7 cells. HU-1 exhibited a dose dependent effect on caspase 7 gene in both cell lines while HU-2 was more effective in A431. HU-2 has potential for development as a novel anti-inflammatory and anticancer agent.
Target Mass Corrections to QCD Bjorken Sum Rule for Nucleon Spin Structure Functions
Creators: name: KAWAMURA, Hiroyuki
name: UEMATSU, Tsuneo
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the possible target mass corrections in the QCD analysis of nucleon's spin-dependent structure functions measured in the polarized deep-inelastic leptoproduction. The target mass correction for the QCD Bjorken sum rule is obtained from the Nachtmann moment and its magnitude is estimated employing positivity bound as well as the experimental data for the asymmetry parameters. We also study the uncertainty due to target mass effects in determining the QCD effective coupling constant $α_s(Q^2)$ from the Bjorken sum rule. The target mass effect for the Ellis-Jaffe sum rule is also briefly discussed.
description: 9 pages, LaTeX, 1 figure (.ps files) appended after \end{document} as an uuencoded compressed tar file
Deciphering $Ξ^-$ capture events in light emulsion nuclei
Creators: name: Friedman, Eliahu
name: Gal, Avraham
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We recently showed that all five KEK and J-PARC uniquely assigned two-body $Ξ^-$+${^A}$Z$\to{_Λ^{A'}}$Z'+${_Λ^{A''}}$Z'' capture events in CNO light emulsion nuclei are consistent with Coulomb-assisted $1p_{Ξ^-}$ nuclear states in a $Ξ$-nuclear potential of nuclear-matter depth $V_Ξ\gtrsim 20$ MeV [1]. Here we argue that the recently reported $^{14}$N capture events named KINKA and IRRAWADDY are more likely $1p_{Ξ^0}$--$^{14}$C nuclear states [2] than $1s_{Ξ^-}$--$^{14}$N states, the latter assignment implying considerably smaller values of $V_Ξ$.
description: 6 pages, 3 figures, 2 tables; invited talk at MESON2023, Krakow, June 2023, plus updated discussion section; v1: as submitted to EPJ Web of Conferences; v2: updated, published version
CMB Anisotropies: Total Angular Momentum Method
Creators: name: Hu, Wayne
name: White, Martin
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A total angular momentum representation simplifies the radiation transport problem for temperature and polarization anisotropy in the CMB. Scattering terms couple only the quadrupole moments of the distributions and each moment corresponds directly to the observable angular pattern on the sky. We develop and employ these techniques to study the general properties of anisotropy generation from scalar, vector and tensor perturbations to the metric and the matter, both in the cosmological fluids and from any seed perturbations (e.g. defects) that may be present. The simpler, more transparent form and derivation of the Boltzmann equations brings out the geometric and model-independent aspects of temperature and polarization anisotropy formation. Large angle scalar polarization provides a robust means to distinguish between isocurvature and adiabatic models for structure formation in principle. Vector modes have the unique property that the CMB polarization is dominated by magnetic type parity at small angles (a factor of 6 in power compared with 0 for the scalars and 8/13 for the tensors) and hence potentially distinguishable independent of the model for the seed. The tensor modes produce a different sign from the scalars and vectors for the temperature-polarization correlations at large angles. We explore conditions under which one perturbation type may dominate over the others including a detailed treatment of the photon-baryon fluid before recombination.
description: 32 pg., 10 figs., RevTeX, minor changes reflect published version, minor typos corrected, also available at http://www.sns.ias.edu/~whu
DNA binding, prominent photonuclease activity and antibacterial PDT of cobalt(II) complexes of phenanthroline based photosensitizers
Creators: name: Chittanahalli N. Sudhamani
name: Halehatty S. Bhojya Naik
name: Kalligundi R. Sangeetha Gowda
name: Dugganna Girija
name: Giridhar, Manju
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: The chemistry of Co(II) complexes showing efficient light induced DNA cleavage activity, binding propensity to calf thymus DNA and antibacterial PDT is summarized in this article. Complexes of formulation [Co(mqt)(B)2]ClO4 1–3 where mqt is 4-methylquinoline-2-thiol and B is N,N-donor heterocyclic base, viz. 1,10-phenanthroline (phen 1), dipyrido[3,2-d:2′,3′-f]quinoxaline (dpq 2) and dipyrido[3,2-a:2′,3′-c]phenazine (dppz 3) have been prepared and characterized. The DNA-binding behaviors of these three complexes were explored by absorption spectra, viscosity measurements and thermal denaturation studies. The DNA binding constants for complexes 1, 2 and 3 were determined to be 1.6 × 103 M−1, 1.1 × 104 M−1 and 6.4 × 104 M−1 respectively. The experimental results suggest that these complexes interact with DNA through groove binding mode. The complexes show significant photocleavage of supercoiled (SC) DNA proceeds via a type-II process forming singlet oxygen as the reactive species. Antimicrobial photodynamic therapy was studied using photodynamic antimicrobial chemotherapy (PACT) assay against E. coli and all complexes exhibited significant reduction in bacterial growth on photoirradiation.
Spin pumping from a ferromagnetic insulator into an altermagnet
Creators: name: Sun, Chi
name: Linder, Jacob
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A class of antiferromagnets with spin-polarized electron bands, yet zero net magnetization, called altermagnets is attracting increasing attention due to their potential use in spintronics. Here, we study spin injection into an altermagnet via spin pumping from a ferromagnetic insulator. We find that the spin pumping behaves qualitatively different depending on how the altermagnet is crystallographically oriented relative the interface to the ferromagnetic insulator. The altermagnetic state can enhance or suppress spin pumping, which we explain in terms of spin-split altermagnetic band structure and the spin-flip probability for the incident modes. Including the effect of interfacial Rashba spin-orbit coupling, we find that the spin-pumping effect is in general magnified, but that it can display a non-monotonic behavior as a function of the spin-orbit coupling strength. We show that there exists an optimal value of the spin-orbit coupling strength which causes an order of magnitude increase in the pumped spin current, even for the crystallographic orientation of the altermagnet which suppresses the spin pumping.
description: 5 pages, 3 figures + supplementary information
Study of light deflection and shadow from a hairy black hole under the influence of the non-magnetic plasma
Creators: name: Ali, Riasat
name: Tiecheng, Xia
name: Awais, Muhammad
name: Babar, Rimsha
Publisher: name: arXiv
Year: 2025
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This article computes the bending angle of a hairy black hole at weak field limits. The Gauss-Bonnet theorem is applied to the Gaussian optical curvature; this gives a way to calculate the hairy black hole light bending angle using the Gibbons and Werner approach. We determine the light's deflection angle under the influence of gravitational decoupling parameters, non-magnetic plasma, and dark matter. Further, using the ray tracing phenomenon, we determine the shadow at which light is deflected when a non-magnetic plasma medium is present. There must exist unstable circular light orbits that can act as limit curves for light rays in a spiral motion. In this manner, the shadow can be calculated for an observer at any distance from the center, and the energy emission rate for the hairy black hole can be studied.
description: Published in Chinese Journal of Physics Vol. 94, 2025, Pages 416-430
$B$ meson anomalies and large $B^{+}\to K^{+}ν\barν$ in non-universal $U(1)^\prime$ models
Creators: name: Athron, Peter
name: Martinez, R.
name: Sierra, Cristian
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In view of both the latest LHCb measurement of $R_{K^{(*)}}$ and the new $2.8σ$ deviation reported by Belle II on $B^{+}\to K^{+}ν\barν$ decays, we present a fit to the $B$ meson anomalies for various one and two dimensional hypothesis including complex Wilson coefficients. We show in a model-independent way that the generic non-universal $U(1)^{\prime}$ extensions of the SM, without flavour violation, fail to simultaneously fit those observables and corroborate that they can modify $\mathrm{BR}(B^{+}\to K^{+}ν\barν)$ up to only a $10\%$. In view of this deficit, we propose a new way in which those models can accommodate the data at tree level by introducing lepton flavour violating couplings and non-diagonal elements of the charged lepton mixing matrix, with implications in future charged lepton flavour violation searches.
description: 16 pages, 5 figures, 2 tables, charged lepton flavour violating constraints added, new citations included
Sima sahlbergi
Creators: name: Emery, C.
Publisher: name: Zenodo
Year: 1895
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Hexapoda
Hymenoptera
Formicidae
Sima
Sima sahlbergi

description: Sima sahlbergi Forel.
- La description de M. Forel me semble devoir etre modifiee, du moins pour ce qui regarde une [[worker]] de l' imerina que je tiens de l'auteur meme. Chez cet exemplaire, l'epistome offre a son bord superieur 5 dents aigues, dont la mediane est la plus longue; cela me fait supposer que la forme de cette partie est sujette a varier.
description: Published as part of Emery, C., 1895, Mission scientifique de M. Ch. Alluaud dans le territoire de Diego-Suarez (Madagascar-Nord). (Avril-août 1893)., pp. 336-345 in Annales de la Societe Entomologique de Belgique 39 on page 340
Nematic order in topological SYK models
Creators: name: Hardy, Andrew
name: Bose, Anjishnu
name: Paramekanti, Arun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study a class of multi-orbital models based on those proposed by Venderbos, Hu, and Kane which exhibit an interplay of topology, interactions, and fermion incoherence. In the non-interacting limit, these models exhibit trivial and Chern insulator phases with Chern number $C \geq 1$ bands as determined by the relative angular momentum of the participating orbitals. These quantum anomalous Hall insulator phases are separated by topological transitions protected by crystalline rotation symmetry, featuring Dirac or quadratic band-touching points. Here we study the impact of Sachdev-Ye-Kitaev (SYK) type interactions on these lattice models. Given the random interactions, these models display `average symmetries' upon disorder averaging, including a charge conjugation symmetry, so they behave as interacting models in topological class $\mathbf{D}$ enriched by crystalline rotation symmetry. The phase diagram of this model features a non-Fermi liquid at high temperature and an `exciton condensate' with nematic transport at low temperature. We present results from the free-energy, spectral functions, and the anomalous Hall resistivity as a function of temperature and tuning parameters. Our results are broadly relevant to correlated topological matter in multiorbital systems, and may also be viewed, with a suitable particle hole transformation, as an exploration of strong interaction effects on mean-field topological superconductors.
description: 15 pages, 6 figures. PRB Accepted version
Sima sahlbergi subsp. longula Emery, 1895, n. var.
Creators: name: Emery, C.
Publisher: name: Zenodo
Year: 1895
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Hexapoda
Hymenoptera
Formicidae
Sima
Sima sahlbergi
Longula

description: Var. longula n. var.
- [[worker]]. M. Alluaud a rapporte de Diego-Suarez une variete dont l'epistome est conforme comme chez le type qui vient d'etre decrit. La tete est un peu plus allongee, le thorax plus etroit, le postscutellum plus court. Les segments du pedicule sont plus allonges, le ler n oe ud plus comprime, descendant plus rapidement en avant, presque comme chez S. hysterica Forel. Les pattes sont presque entierement depourvues de poils dresses.
D'autres exemplaires, provenant de Nossi Be, ressemblent davantage au type et les dents de l'epistome sont bien plus courtes et - plus mousses, se rapportant mieux a la description de M. Forel. Le pedicule est exactement comme chez le type. Les pattes ont d'assez nombreux poils obliques plutot courts. L'un de ces exemplaires est immature, brun testace avec le corselet plus fonce.
description: Published as part of Emery, C., 1895, Mission scientifique de M. Ch. Alluaud dans le territoire de Diego-Suarez (Madagascar-Nord). (Avril-août 1893)., pp. 336-345 in Annales de la Societe Entomologique de Belgique 39 on page 340
Inertial enhancement of the polymer diffusive instability
Creators: name: Couchman, Miles M. P.
name: Beneitez, Miguel
name: Page, Jacob
name: Kerswell, Rich R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Beneitez et al. (Phys. Rev. Fluids, 8, L101901, 2023) have recently discovered a new linear "polymer diffusive instability" (PDI) in inertialess rectilinear viscoelastic shear flow using the FENE-P model when polymer stress diffusion is present. Here, we examine the impact of inertia on the PDI for both plane Couette (PCF) and plane Poiseuille (PPF) flows under varying Weissenberg number $W$, polymer stress diffusivity $\varepsilon$, solvent-to-total viscosity ratio $β$, and Reynolds number $Re$, considering the FENE-P and simpler Oldroyd-B constitutive relations. Both the prevalence of the instability in parameter space and the associated growth rates are found to significantly increase with $Re$. For instance, as $Re$ increases with $β$ fixed, the instability emerges at progressively lower values of $W$ and $\varepsilon$ than in the inertialess limit, and the associated growth rates increase linearly with $Re$ when all other parameters are fixed. For finite $Re$, it is also demonstrated that the Schmidt number $Sc=1/(\varepsilon Re)$ collapses curves of neutral stability obtained across various $Re$ and $\varepsilon$. The observed strengthening of PDI with inertia and the fact that stress diffusion is always present in time-stepping algorithms, either implicitly as part of the scheme or explicitly as a stabiliser, implies that the instability is likely operative in computational work using the popular Oldroyd-B and FENE-P constitutive models. The fundamental question now is whether PDI is physical and observable in experiments, or is instead an artifact of the constitutive models that must be suppressed.
description: 12 pages, 5 figures. Version accepted for publication in the Journal of Fluid Mechanics. DOI link to final typeset version provided
Robust Sensor Fusion for Robot Attitude Estimation
Creators: name: Allgeuer, Philipp
name: Behnke, Sven
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Knowledge of how a body is oriented relative to the world is frequently invaluable information in the field of robotics. An attitude estimator that fuses 3-axis gyroscope, accelerometer and magnetometer data into a quaternion orientation estimate is presented in this paper. The concept of fused yaw, used by the estimator, is also introduced. The estimator, a nonlinear complementary filter at heart, is designed to be uniformly robust and stable---independent of the absolute orientation of the body---and has been implemented and released as a cross-platform open source C++ library. Extensions to the estimator, such as quick learning and the ability to deal dynamically with cases of reduced sensory information, are also presented.
description: International Conference on Humanoid Robots (Humanoids), Madrid, Spain, 2014
Pattern of Cardiovascular Comorbidity in COPD in a Country with Low-smoking Prevalence: Results from Two-population-based Cohorts from Sweden
Creators: name: Berne Eriksson
name: Backman, Helena
name: Ekerljung, Linda
name: Axelsson, Malin
name: Lindberg, Anne
name: Rönmark, Eva
name: Lundbäck, Bo
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Cardiovascular diseases are the most common comorbidities in COPD, due to common risk factors such as smoking. The prevalence of current smokers in Sweden has decreased over four decades to around 10%. The aim of the present study was to investigate the prevalence, distribution and associations of cardiovascular comorbidities in COPD by disease severity in two large areas of Sweden, both with low-smoking prevalence. Data from clinical examinations in 2009–2012, including spirometry and structured interview, from two large-scale population studies, the West Sweden Asthma Study (WSAS) and the OLIN Studies in Northern Sweden, were pooled. COPD was defined using post-bronchodilator spirometry according to the fixed ratio FEV1/FVC <0.70 and the lower limit of normal (LLN5th percentile) of the ratio of FEV1/FVC. Of the 1839 subjects included, 8.7% and 5.7% had COPD according to the fixed ratio and the LLN criterion. Medication for heart disease or hypertension among those with moderate-to-severe COPD was more common than among those without COPD (fixed ratio definition of COPD: 51% vs. 23%, p vs. 24%, p = 0.002). After adjusting for known risk factors for COPD, including smoking, age, socio-economic status, and occupational exposure for gas, dust and fumes, only heart failure remained significantly, and independently, associated with COPD, irrespective of the definitions of COPD. Though a major decrease in smoking prevalence, the pattern of cardiovascular comorbidities in COPD still remains similar with previously performed studies in Sweden and in other Westernized countries as well.
Measurements of the Hubble constant from combinations of supernovae and radio quasars
Creators: name: Liu, Tonghua
name: Yang, Xiyan
name: Zhang, Zisheng
name: Wang, Jieci
name: Biesiada, Marek
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this letter, we propose an improved cosmological model independent method of determining the value of the Hubble constant $H_0$. The method uses unanchored luminosity distances $H_0d_L(z)$ from SN Ia Pantheon data combined with angular diameter distances $d_A(z)$ from a sample of intermediate luminosity radio quasars calibrated as standard rulers. The distance duality relation between $d_L(z)$ and $d_A(z)$, which is robust and independent of any cosmological model, allows to disentangle $H_0$ from such combination. However, the number of redshift matched quasars and SN Ia pairs is small (37 data-points). Hence, we take an advantage from the Artificial Neural Network (ANN) method to recover the $d_A(z)$ relation from a network trained on full 120 radio quasar sample. In this case, the result is unambiguously consistent with values of $H_0$ obtained from local probes by SH0ES and H0LiCOW collaborations. Three statistical summary measures: weighted mean $\widetilde{H}_0=73.51(\pm0.67) {~km~s^{-1}~Mpc^{-1}}$, median $Med(H_0)=74.71(\pm4.08) {~km~s^{-1}~Mpc^{-1}}$ and MCMC simulated posterior distribution $H_0=73.52^{+0.66}_{-0.68} {~km~s^{-1}~Mpc^{-1}}$ are fully consistent with each other and the precision reached $1\%$ level. This is encouraging for the future applications of our method. Because individual measurements of $H_0$ are related to different redshifts spanning the range $z=0.5 - 2.0$, we take advantage of this fact to check if there is any noticeable trend in $H_0$ measurements with redshift of objects used for this purpose. However, our result is that the data we used strongly support the lack of such systematic effects.
description: 20 pages, 5 figures, accepted for publication in Physics Letters B
Truncated Conformal Space at c=1, Nonlinear Integral Equation and Quantization Rules for Multi-Soliton States
Creators: name: Feverati, G.
name: Ravanini, F.
name: Takacs, G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop Truncated Conformal Space (TCS) technique for perturbations of c=1 Conformal Field Theories. We use it to give the first numerical evidence of the validity of the non-linear integral equation (NLIE) derived from light-cone lattice regularization at intermediate scales. A controversy on the quantization of Bethe states is solved by this numerical comparison and by using the locality principle at the ultra- violet fixed point. It turns out that the correct quantization for pure hole states is the one with half-integer quantum numbers originally proposed by Mariottini et al. Once the correct rule is imposed, the agreement between TCS and NLIE for pure hole states turns out to be impressive.
description: 12 pages, 5 eps figures, LaTeX2e. Reference added, changes in the discussion of TCS method
Pair production of neutralinos via gluon-gluon collisions
Creators: name: Yi, JIANG
name: Wen-Gan, MA
name: Liang, HAN
name: Zeng-Hui, YU
name: Pietschmann, H.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The production of a neutralino pair via gluon-gluon fusion is studied in the minimal supersymmetric model(MSSM) at proton-proton colliders. The numerical analysis of their production rates are carried out in the mSUGRA scenario. The results show that this cross section may reach about 80 femto barn for $\tildeχ^{0}_{1}\tildeχ^{0}_{2}$ pair production and 23 femto barn for $\tildeχ^{0}_{2}\tildeχ^{0}_{2}$ pair production with suitable input parameters at the future LHC collider. It shows that this loop mediated process can be competitive with the quark-antiquark annihilation process at the LHC.
description: LaTex file, l4 pages, 5 EPS figures
Quantum steering with imprecise measurements
Creators: name: Tavakoli, Armin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study quantum steering experiments without assuming that the trusted party can perfectly control their measurement device. Instead, we introduce a scenario in which these measurements are subject to small imprecision. We show that small measurement imprecision can have a large detrimental influence in terms of false positives for steering inequalities, and that this effect can become even more relevant for high-dimensional systems. We then introduce a method for taking generic measurement imprecision into account in tests of bipartite steering inequalities. The revised steering bounds returned by this method are analytical, easily computable, and are even optimal for well-known families of arbitrary-dimensional steering tests. Furthermore, it applies equally well to generalised quantum steering scenarios, where the shared quantum state does not need to be separable, but is instead limited by some other entanglement property.
description: See also the paper of S. Sarkar on arXiv today
Vertical oscillation of a coronal cavity triggered by an EUV wave
Creators: name: Zhang, Q. M.
name: Ji, H. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper, we report our multiwavelength observations of the vertical oscillation of a coronal cavity on 2011 March 16. The elliptical cavity with an underlying horn-like quiescent prominence was observed by the Atmospheric Imaging Assembly (AIA) on board the \textit{Solar Dynamics Observatory} (\textit{SDO}). The width and height of the cavity are 150$\arcsec$ and 240$\arcsec$, and the centroid of cavity is 128$\arcsec$ above the solar surface. At $\sim$17:50 UT, a C3.8 two-ribbon flare took place in active region 11169 close to the solar western limb. Meanwhile, a partial halo coronal mass ejection (CME) erupted and propagated at a linear speed of $\sim$682 km s$^{-1}$. Associated with the eruption, a coronal extreme-ultraviolet (EUV) wave was generated and propagated in the northeast direction at a speed of $\sim$120 km s$^{-1}$. Once the EUV wave arrived at the cavity from the top, it pushed the large-scale overlying magnetic field lines downward before bouncing back. At the same time, the cavity started to oscillate coherently in the vertical direction and lasted for $\sim$2 cycles before disappearing. The amplitude, period, and damping time are 2.4$-$3.5 Mm, 29$-$37 minutes, and 26$-$78 minutes, respectively. The vertical oscillation of the cavity is explained by a global standing MHD wave of fast kink mode. To estimate the magnetic field strength of the cavity, we use two independent methods of prominence seismology. It is found that the magnetic field strength is only a few Gauss and less than 10 G.
description: 14 pages, 14 figures, accepted for publication in The Astrophysical Journal
Properties of an accretion disc with a power-law stress-pressure relationship
Creators: name: Shadmehri, Mohsen
name: Khajenabi, Fazeleh
name: Dib, Sami
name: Inutsuka, Shu-ichiro
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent numerical simulations of magnetized accretion discs show that the radial-azimuthal component of the stress tensor due to the magnetorotational instability (MRI) is well represented by a power-law function of the gas pressure rather than a linear relation which has been used in most of the accretion disc studies. The exponent of this power-law function which depends on the net flux of the imposed magnetic field is reported in the range between zero and unity. However, the physical consequences of this power-law stress-pressure relation within the framework of the standard disc model have not been explored so far. In this study, the structure of an accretion disc with a power-law stress-pressure relation is studied using analytical solutions in the steady-state and time-dependent cases. The derived solutions are applicable to different accreting systems, and as an illustrative example, we explore structure of protoplanetary discs using these solutions. We show that the slopes of the radial surface density and temperature distributions become steeper with decreasing the stress exponent. However, if the disc opacity is dominated by icy grains and value of the stress exponent is less than about $0.5$, the surface density and temperature profiles become so steep that make them unreliable. We also obtain analytical solutions for the protoplanetary discs which are irradiated by the host star. Using these solutions, we find that the effect of the irradiation becomes more significant with decreasing the stress exponent.
description: Accepted for publication in MNRAS
Steady state distributions of network of degenerate optical parametric oscillators in solving combinatorial optimization problems
Creators: name: Miyazaki, Ryoji
name: Ohzeki, Masayuki
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate network of degenerate optical parametric oscillators (DOPOs) as a model of the coherent Ising machine, an architecture for solving Ising problems. The network represents the interaction in the Ising model, which is a generalization of a previously proposed one for the two-DOPO case. Dynamics of the DOPOs is described by the Fokker-Planck equation in the positive $P$ representation. We obtain approximate steady state distributions for arbitrary Ising problems under some ansatz. Using the method of statistical mechanics, we analytically demonstrate that the most probable states in a particular range of the parameters correspond to the true optimal states for two rather simple problems, i.e., fully-connected ferromagnetic coupling without/with binary random fields. In particular, for the random-field problem, the distribution correctly detects the phase transition that occurs in the target Ising model with varying the magnitude of the fields.
description: 13 pages, 2 figures
The theory and phenomenology of polarized deep inelastic scattering
Creators: name: Anselmino, M.
name: Efremov, A.
name: Leader, E.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Comprehensive review paper on the theory and phenomenology of polarized deep inelastic scattering, to appear in Physics Reports
description: 113 pages, latex, 40 figures not included (hard copies available via mail upon request to anselmino@to.infn.it)
Investigation of W-SiC compositionally graded films as a divertor material
Creators: name: Lin, Zihan
name: Monton, Carlos
name: Bringuier, Stefan
name: Sinclair, Gregory
name: Cheng, Guangming
name: Marin, Eduardo
name: Bergstrom, Zachary
name: Rudakov, Dmitry
name: Popović, Žana
name: Losada, Ulises
name: Bykov, Igor
name: Ostrowski, Evan T.
name: Abe, Shota
name: Yao, Nan
name: Koel, Bruce E.
name: Abrams, Tyler
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: W-SiC composite material is a promising plasma-facing material candidate alternative to pure W due to the low neutron activation, low impurity radiation, and low tritium diffusivity of SiC while leveraging the high erosion resistance of the W armor. Additionally, W and SiC have high thermomechanical compatibility given their similar thermal expansion rates. The present study addresses the synthesis and performance of compositionally graded W-SiC films fabricated by pulsed-DC magnetron sputtering. Compositional gradients were characterized using transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS), and crystallographic information was obtained using electron diffraction and X-ray diffraction (XRD). Samples were exposed to L-mode deuterium plasma discharges in the DIII-D tokamak using the Divertor Material Evaluation System (DiMES). Post-mortem characterizations were performed using scanning electron microscopy (SEM) and XRD. Electron diffraction and XRD showed that the compositionally graded W-SiC films were composed of polycrystalline W and amorphous SiC with amorphous W+SiC interlayers. No macroscopic delamination or microstructural changes were observed under mild exposure conditions. This study serves as a preliminary examination of W-SiC compositionally graded composites as a potential candidate divertor material in future tokamak devices.
description: Published in Journal of Nuclear Materials
Dynamics of Metastable Vacua in the Early Universe
Creators: name: Bergerhoff, Bastian
name: Lindner, Manfred
name: Weiser, Manfred
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the question whether a possible metastable vacuum state is actually populated in a phase transition in the early universe, as is usually assumed in the discussion of vacuum stability bounds e.g. for Standard Model parameters. A phenomenological (3+1)-dimensional Langevin equation is solved numerically for a toy model with a potential motivated by the finite temperature 1-loop effective potential of the Standard Model including additional non-renormalizable operators from an effective theory for physics beyond the Standard Model and a time dependent temperature. It turns out that whether the metastable vacuum is populated depends critically on the value of the phenomenological parameter eta for small scalar couplings. For large enough scalar couplings and with our specific form of the non-renormalizable operators the system (governed by the Langevin equation) always ends up in the metastable minimum.
description: Some additional discussion, references added, final version to appear in Phys.Lett. B
title: ADCO, Grènetier de Cîteaux : comptes (1499-1503) (11 H 1173), f. 00075
Creators: name: de la Côte-d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Grènetier de Cîteaux : comptes (1499-1503), Archives départementales de la Côte-d'Or, (11 H 1173). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Grènetier de Cîteaux : comptes (1499-1503), Archives départementales de la Côte-d'Or, (11 H 1173), f. 00075, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
New Protostellar Collapse Candidates: An HCO+ Survey of the Class 0 Sources
Creators: name: Gregersen, Erik M.
name: Evans, Neal J.
name: Zhou, Shudong
name: Choi, Minho
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed 23 Class 0 sources in the HCO+ J=4-3 and 3-2 lines. The mean bolometric temperature of the 16 sources with well-determined values is 44 K and the mean luminosity is 5.7 L_sun, excluding two sources of considerably higher luminosity. Nine sources, including three sources previously suggested to be collapsing, have the correct (blue) spectral line asymmetry for infall in both lines. Three sources have the opposite (red) asymmetry in both lines, and one source, L1157, has a red asymmetry in HCO+ J=4-3 and a blue asymmetry in J=3-2. The rest have no significant or consistent asymmetry. The H13CO+ J=4-3 and 3-2 lines were also observed to find the velocity of the ambient gas, and sources with an interesting line asymmetry were mapped. A Monte Carlo code was used to produce an evolutionary sequence of collapsing cloud models of the HCO+ J=4-3 and 3-2 lines and to compare various diagnostics of the resulting line profiles. The same code was used to compare infall models to the observations in one source, L1527. The results were consistent with previous collapse models. Based on integrated intensity maps of the line peaks and wings, as well as the velocity of the H13CO+ line, we select six of the nine sources with a blue line asymmetry as good candidates for protostellar collapse. Further evidence is needed to establish that infall is taking place. The HCO+ spectra are not conclusive because bipolar outflows produce strong emission, which can confuse the issue in any individual source. However, the predominance of blue asymmetries over red asymmetries is not naturally explained in outflow models, whereas it is expected in collapse models.
description: 27 pages, 16 figures, to be published in ApJ
CAN TAX JUSTICE REARRANGE AN UNFAIR SYSTEM? THE BRAZILIAN CASE
Creators: name: ILTON GARCIA DA COSTA
name: HENRIQUE RIBEIRO CARDOSO
name: JOSÉ LEITE DOS SANTOS NETO
Publisher: name: figshare
Year: 2018
Subjects: subject: Law
subject: FOS: Law

description: The present study had sought the concepts and meanings of Justice in the works of Aristotle (Nicomachean Ethics), Hans Kelsen (Das Problem der Gerechtigkeit – The Problem of Justice) and John Rawls (A Theory of Justice). After this, the study has analyzed the ideas presented by John Rawls in "Justice as Equity", which are the foundation for a more specific insight about tax justice. The Rawlsian concept, from which the study started, was that justice would be "an appropriate balance between conflicting demands". Then it has analyzed some situations of what tax injustices in the Brazilian Tax Legislation would be. Finally, it has concluded that an approximate idea of tax justice is in the fair balance between the concerns of the taxpayer and the State, which equitably establishes the size of the social minimum and the fair savings rate, as well as it avoids high inequality at the top of the income distribution through tax proportionality, which could limit equal opportunities and would inhibit economic growth.
Charges from Dressed Matter: Physics and Renormalisation
Creators: name: Bagan, Emili
name: Lavelle, Martin
name: McMullan, David
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Gauge theories are characterised by long range interactions. Neglecting these interactions at large times, and identifying the Lagrangian matter fields with the asymptotic physical fields, leads to the infra-red problem. In this paper we study the perturbative applications of a construction of physical charges in QED, where the matter fields are combined with the associated electromagnetic clouds. This has been formally shown, in a companion paper, to include these asymptotic interactions. It is explicitly demonstrated that the on-shell Green's functions and S-matrix elements describing these charged fields have, to all orders in the coupling, the pole structure associated with particle propagation and scattering. We show in detail that the renormalisation procedure may be carried out straightforwardly. It is shown that standard infra-red finite predictions of QED are not altered and it is speculated that the good infra-red properties of our construction may open the way to the calculation of previously uncalculable properties. Finally extensions of this approach to QCD are briefly discussed.
description: 34 pages, LaTeX, uses FeynMF, 17 figures, very minor wording change, version to appear in Annals of Physics
Space charge and screening of a supercritical impurity cluster in monolayer graphene
Creators: name: Kolomeisky, Eugene B.
name: Straley, Joseph P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Coulomb impurity of charge $Ze$ is known to destabilize the ground state of undoped graphene with respect to creation of screening space charge if $Z$ exceeds a critical value of $1/2α$ set by material's fine structure constant $α$. Recent experimental advances made it possible to explore this transition in a controlled manner by tuning $Z$ across the critical point. Combined with relatively large value of $α$ this opens a possibility to study graphene's screening response to a supercritical impurity $Zα\gg1$ when the screening charge is large, and the Thomas-Fermi analysis, that we revisit, is adequate. The character of screening in this regime is controlled by the dimensionless screening parameter $Zα^{2}$. Specifically, for circular impurity cluster most of the screening charge in the weak-screening regime $Zα^{2}\ll1$ is found to reside outside the cluster. The strong-screening regime $Zα^{2}\gg1$ provides a realization of the Thomson atom: most of the screening charge is inside the cluster nearly perfectly neutralizing the source charge with the exception of a transition layer near cluster's edge where the rest of the space charge is localized.
description: 8 pages, 1 figure, minor changes, version to be published in Phys. Rev. B
Is the Casimir effect relevant to sonoluminescence?
Creators: name: Nesterenko, V. V.
name: Pirozhenko, I. G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Casimir energy of a solid ball (or cavity in an infinite medium) is calculated by a direct frequency summation using the contour integration. The dispersion is taken into account, and the divergences are removed by making use of the zeta function technique. The Casimir energy of a dielectric ball (or cavity) turns out to be positive, it being increased when the radius of the ball decreases. The latter eliminates completely the possibility of explaining, via the Casimir effect, the sonoluminescence for bubbles in a liquid. Besides, the Casimir energy of the air bubbles in water proves to be immensely smaller than the amount of the energy emitted in a sonoluminescent flash. The dispersive effect is shown to be inessential for the final result.
description: 4 pages, REVTeX, one Postscript figure (separate file), no tables
The Schwarzschild singularity: a semiclassical bounce?
Creators: name: Bolokhov, S. V.
name: Bronnikov, K. A.
name: Skvortsova, M. V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the opportunity that the singularity inside a Schwarzschild black hole could be replaced by a regular bounce, described as a regular minimum of the spherical radius (instead of zero) and a regular maximum of the longitudinal scale (instead of infinity) in the corresponding Kantowski-Sachs metric. Such a metric in a vicinity of the bounce is shown to be a solution to the Einstein equations with the stress-energy tensor representing vacuum polarization of quantum matter fields, described by a combination of curvature-quadratic terms in the effective action. The indefinite parameters of the model can be chosen in such a way that it remains a few orders of magnitude apart from the Planck scale (say, on the GUT scale), that is, in a semiclassical regime.
description: 6 pages, no figures. 5 references and some comments added
Development of a Cloud-Based Payroll Management System
Creators: name: Aina, Adeyemi
name: Odun-Ayo, Isaac
Publisher: name: arXiv
Year: 2025
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Cloud computing is continually evolving, enhancing hardware technologies, improving software and enhancing business processes. A payroll management system deployed on the Cloud harnesses on-demand of delivery of computational power and database storage using cloud computing technologies. This project aims to develop and deploy a cloud-based payroll management system. The objectives of this study are: to carry out a study on the existing cloud-based payroll management system, to design a payroll data model for calculating basic salary and enables retrieval of payroll history when needed from the database, to develop and deploy a payroll management system, on the Cloud that generates earning statements, filling the gap between security infrastructure and optimal system performance harnessing cloud computing technologies. The focus was on the design, implementation and deployment, using UML diagrams to illustrate the payroll application and Google App Engine for deployment. The system analysis in comparison of a conventional payroll system and the cloud-based system is endless in terms of speed, processing power, storage capacity, universalization and pricing. The cloud-based payroll has an infinite number of advantages; all conventional payroll system is rendered obsolete as it mends all the cons.
description: 7 pages, 2 Figures
THE PRESCRIPTIBILITY OF THE ACTION FOR REIMBURSEMENT OF THE ERROR IN RESPONSE TO ACTS OF ADMINISTRATIVE IMPROBITY
Creators: name: EMERSON GABARDO
name: LUCAS BOSSONI SAIKALI
Publisher: name: figshare
Year: 2018
Subjects: subject: Law
subject: FOS: Law

description: The study analyzes the debate about the inexistence of a limitation period for lawsuits against State debtors in cases of misconduct or administrative dishonesty, according to the exegesis of the art. 37, § 5, of the Federal Constitution. At first, the article sought to introduce the principle of legal certainty in the Brazilian legal scenario, as well as demonstrate its constitutional character. Afterwards, the article indicates that in the Brazilian constitutional system there are three examples in which the imprescriptibility is expressed unequivocally by the constituent. Furthermore, the acts that cause damage to the public treasury were analyzed, as well as the role of the Federal Supreme Court in the debate, either through RE 669.609/MG and RE 852.475/SP. Also, the article points out the reasons in favor of a limitation period for legal actions of compensation to the Treasury and the arguments listed by those who defend the opposite thesis. In the end, the article concludes that the absence of a limitation period for the State to file compensation claims violates the basic principles of the Brazilian Constitution, namely, the principles of legal certainty and due process of law.