cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An improved half-life limit of the double beta decay of $^{94}$Zr into the excited state of $^{94}$Mo
Creators: name: Dokania, N
name: Degering, D
name: Lehnert, B
name: Nanal, V
name: Zuber, K
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A search for the double beta decay transition of $^{94}$Zr into the first excited state of $^{94}$Mo has been performed at the Felsenkeller underground laboratory in Dresden, Germany. A 341.1 g zirconium sample with natural isotopic composition has been measured for 43.9 d in an ultra low background gamma spectroscopy setup. No signal has been observed and a new best lower half-life limit is set as $5.2\times10^{19}$ yr (90% CI). This limit is valid for the $0νββ$ and $2νββ$ decay into excited states of $^{94}$Mo but cannot distinguish between the two modes. Existing limits are improved by 50%.
Extended Main Sequence Turnoffs in Open Clusters as Seen by Gaia: I. NGC 2818 and the Role of Stellar Rotation
Creators: name: Bastian, N.
name: Kamann, S.
name: Cabrera-Ziri, I.
name: Georgy, C.
name: Ekström, S.
name: Charbonnel, C.
name: Ovelar, M. de Juan
name: Usher, C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present an analysis of the relatively low mass ($\sim2400$~M$_{\odot}$), $\sim800$~Myr, Galactic open cluster, NGC~2818, using Gaia DR2 results combined with VLT/FLAMES spectroscopy. Using Gaia DR2 proper motions and parallax measurements we are able to select a clean sample of cluster members. This cluster displays a clear extended main sequence turn-off (eMSTO), a phenomenon previously studied mainly in young and intermediate age massive clusters in the Magellanic clouds. The main sequence of NGC~2818 is extremely narrow, with a width of $\sim0.01$ magnitudes (G$_{\rm BP} - $ G$_{\rm RP}$), suggesting very low levels of differential extinction. Using VLT/FLAMES spectroscopy of 60 cluster members to measure the rotational velocity of the stars (Vsini) we find that stars on the red side of the eMSTO have high Vsini ($>160$~km/s) while stars on the blue side have low Vsini ($<160$~km/s), in agreement with model predictions. The cluster also follows the previously discovered trend between the age of the cluster and the extent of the eMSTO. We conclude that stellar rotation is the likely cause of the eMSTO phenomenon.
description: 7 pages, 5 figures, MNRAS in press
The $a_{3/2}$ heat kernel coefficient for oblique boundary conditions
Creators: name: Dowker, J. S.
name: Kirsten, K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a method for the calculation of the $a_{3/2}$ heat kernel coefficient of the heat operator trace for a partial differential operator of Laplace type on a compact Riemannian manifold with oblique boundary conditions. Using special case evaluations, restrictions are put on the general form of the coefficients, which, supplemented by conformal transformation techniques, allows the entire smeared coefficient to be determined.
description: 30 pages, LaTeX
Relaxation to magnetohydrodynamics equilibria via collision brackets
Creators: name: Bressan, C.
name: Kraus, M.
name: Morrison, P. J.
name: Maj, O.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Metriplectic dynamics is applied to compute equilibria of fluid dynamical systems. The result is a relaxation method in which Hamiltonian dynamics (symplectic structure) is combined with dissipative mechanisms (metric structure) that relaxes the system to the desired equilibrium point. The specific metric operator, which is considered in this work, is formally analogous to the Landau collision operator. These ideas are illustrated by means of case studies. The considered physical models are the Euler equations in vorticity form, the Grad-Shafranov equation, and force-free MHD equilibria.
description: Conference Proceeding (Theory of Fusions Plasmas, 2018), 9 pages, 8 figures
Gluon Radiation off Hard Quarks in a Nuclear Environment: Opacity Expansion
Creators: name: Wiedemann, Urs Achim
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the relation between the Baier-Dokshitzer-Mueller-Peigne-Schiff (BDMPS) and Zakharov formalisms for medium-induced gluon radiation off hard quarks, and the radiation off very few scattering centers. Based on the non-abelian Furry approximation for the motion of hard partons in a spatially extended colour field, we derive a compact diagrammatic and explicitly colour trivial expression for the N-th order term of the kt-differential gluon radiation cross section in an expansion in the opacity of the medium. Resumming this quantity to all orders in opacity, we obtain Zakharov's path-integral expression (supplemented with a regularization prescription). This provides a new proof of the equivalence of the BDMPS and Zakharov formalisms which extends previous arguments to the kt-differential cross section. We give explicit analytical results up to third order in opacity for both the gluon radiation cross section of free incoming and of in-medium produced quarks. The N-th order term in the opacity expansion of the radiation cross section is found to be a convolution of the radiation associated to N-fold rescattering and a readjustment of the probabilities that rescattering occurs with less than N scattering centers. Both informations can be disentangled by factorizing out of the radiation cross section a term which depends only on the mean free path of the projectile. This allows to infer analytical expressions for the totally coherent and totally incoherent limits of the radiation cross section to arbitrary orders in opacity.
description: 22 pages, LaTeX, eps-figures included, typos corrected, Comment on (5.13) added, to appear in NPB
SpeakGer: A meta-data enriched speech corpus of German state and federal parliaments
Creators: name: Lange, Kai-Robin
name: Jentsch, Carsten
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The application of natural language processing on political texts as well as speeches has become increasingly relevant in political sciences due to the ability to analyze large text corpora which cannot be read by a single person. But such text corpora often lack critical meta information, detailing for instance the party, age or constituency of the speaker, that can be used to provide an analysis tailored to more fine-grained research questions. To enable researchers to answer such questions with quantitative approaches such as natural language processing, we provide the SpeakGer data set, consisting of German parliament debates from all 16 federal states of Germany as well as the German Bundestag from 1947-2023, split into a total of 10,806,105 speeches. This data set includes rich meta data in form of information on both reactions from the audience towards the speech as well as information about the speaker's party, their age, their constituency and their party's political alignment, which enables a deeper analysis. We further provide three exploratory analyses, detailing topic shares of different parties throughout time, a descriptive analysis of the development of the age of an average speaker as well as a sentiment analysis of speeches of different parties with regards to the COVID-19 pandemic.
description: 10 pages, 3 figures
Extended data for MANAGER 1 part 2
Creators: name: Ali, Zaria
name: Aslam, Tariq Mehmood
Publisher: name: figshare
Year: 2018
Subjects: subject: 111301 Ophthalmology
subject: FOS: Clinical medicine

description: Graphs depicting full data for question 4: How much experience do you have with various types of technology?
Deep Learning for Improved Polyp Detection from Synthetic Narrow-Band Imaging
Creators: name: Haugland, Mathias Ramm
name: Qadir, Hemin Ali
name: Balasingham, Ilangko
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: To cope with the growing prevalence of colorectal cancer (CRC), screening programs for polyp detection and removal have proven their usefulness. Colonoscopy is considered the best-performing procedure for CRC screening. To ease the examination, deep learning based methods for automatic polyp detection have been developed for conventional white-light imaging (WLI). Compared with WLI, narrow-band imaging (NBI) can improve polyp classification during colonoscopy but requires special equipment. We propose a CycleGAN-based framework to convert images captured with regular WLI to synthetic NBI (SNBI) as a pre-processing method for improving object detection on WLI when NBI is unavailable. This paper first shows that better results for polyp detection can be achieved on NBI compared to a relatively similar dataset of WLI. Secondly, experimental results demonstrate that our proposed modality translation can achieve improved polyp detection on SNBI images generated from WLI compared to the original WLI. This is because our WLI-to-SNBI translation model can enhance the observation of polyp surface patterns in the generated SNBI images.
MOESM1 of Functional exosome-mediated co-delivery of doxorubicin and hydrophobically modified microRNA 159 for triple-negative breast cancer therapy
Creators: name: Gong, Chunai
name: Tian, Jing
name: Wang, Zhuo
name: Gao, Yuan
name: Wu, Xin
name: Ding, Xueying
name: Qiang, Lei
name: Li, Guorui
name: Han, Zhimin
name: Yuan, Yongfang
name: Gao, Shen
Publisher: name: figshare
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Figure S1. THP-1 monocyte differentiation induced by PMA. (A) Quantitative analysis expression of CD11b and A15 in THP-1 monocytes and differentiated macrophages for different treated concentration of PMA. (B) a)Flow cytometry analysis of A15 expression in THP-1 cells treated with PMA (50 ng/mL) for different times; b) mean fluorescence intensity of A15 expression in THP-1 cells treated with PMA (50 ng/mL) for different times. Figure S2. Confocal laser-scanning microscopy (CLSM) images of MDA-MB-231 and MCF-7 incubated with PKH7 labled Exo or A15-Exo at 37 °C for 4 h. Figure S3. Wound healing assay of MDA-MB-231 cells incubated with Co-A15-Exo displayed arrested healing/closing of the scratch. (representative pictures from 3 repeated experiments) Scale bar: 100 μm. Figure S4. The migratory ability of MDA-MB-231 receiving different treatments was further confirmed by the transwell assay and quantitative analysis of the migrated cells. n = 3 per group. Scale bar, 100 μm.
Non-LTE Models and Theoretical Spectra of Accretion Disks in Active Galactic Nuclei
Creators: name: Hubeny, Ivan
name: Hubeny, Veronika
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present self-consistent models of the vertical structure and emergent spectrum of AGN accretion disks. The central object is assumed to be a supermassive Kerr black hole. We demonstrate that NLTE effects and the effects of a self-consistent vertical structure of a disk play a very important role in determining the emergent radiation, and therefore should be taken into account. In particular, NLTE models exhibit a largely diminished H I Lyman discontinuity when compared to LTE models, and the He II discontinuity appears strongly in emission for NLTE models. Consequently, the number of ionizing photons in the He II Lyman continuum predicted by NLTE disk models is by 1 - 2 orders of magnitude higher than that following from the black-body approximation. This prediction has important implications for ionization models of AGN broad line regions, and for models of the intergalactic radiation field and the ionization of helium in the intergalactic medium.
description: 11 pages; 2 postscript figures; LaTeX, AASPP4 macro; to appear in the Astrophysical Journal (Letters)
Regularized framework of a Weyl equation for describing a Weyl semimetal: Application to the case with a screw dislocation
Creators: name: Takane, Yositake
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The term Weyl semimetal originates from the fact that its energy dispersion obeys a Weyl equation. However, a Weyl equation itself cannot fully describe the electron states in an actual bounded geometry. For example, the appearance of chiral surface states, which is a characteristic feature of a Weyl semimetal, cannot be captured with a Weyl equation. This indicates that some degree of freedom is lost when a Weyl equation is derived from a microscopic model of a Weyl semimetal. To overcome this difficulty, we present a framework consisting of a Weyl equation and a supplementary equation, which can be derived from a microscopic model. Applying this framework to a cylindrical system in the presence of a screw dislocation, we show that it appropriately describes the chiral surface states and one-dimensional chiral modes along a dislocation line. The local charge current induced by these chiral states is determined in an analytical manner.
description: 5 pages, 3 figures
Additional file 1 of Optimized Cas9:sgRNA delivery efficiently generates biallelic MSTN knockout sheep without affecting meat quality
Creators: name: Zhou, Shiwei
name: Kalds, Peter
name: Luo, Qi
name: Sun, Kexin
name: Zhao, Xiaoe
name: Gao, Yawei
name: Cai, Bei
name: Huang, Shuhong
name: Kou, Qifang
name: Petersen, Bjoern
name: Chen, Yulin
name: Ma, Baohua
name: Wang, Xiaolong
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Additional file 1: Table S1. Average cleavage rate and mutation rate of experimental groups. Table S2. Primers used for genotyping and amplifying Cas9/sgRNA-targeted MSTN fragment. Table S3. List of predicted off-target sites. Table S4. Growth parameters of MSTN-knockout and wild-type sheep. Table S5. sgRNA sequences and target sites. Table S6. Oligonucleotides used for generating sgRNA-expressing vectors for in vitro transcription. Table S7. Primers used for genotyping and amplifying predicted off-target site fragments. Table S8. Primers used for measuring MSTN expression level by real-time quantitative PCR (RT-qPCR). Description: The file contains the sequences of on- and off-target sites, primers, and oligonucleotides, as well as other relevant data.
alpha^2 corrections to parapositronium decay: a detailed description
Creators: name: Czarnecki, Andrzej
name: Melnikov, Kirill
name: Yelkhovsky, Alexander
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present details of our recent calculation of alpha^2 corrections to the parapositronium decay into two photons. These corrections are rather small and our final result for the parapositronium lifetime agrees well with the most recent measurement. Implications for orthopositronium decays are briefly discussed.
description: 18 pages, latex
Supplementary document for CCS-UNet: a cross-channel spatial attention model for accurate retinal vessel segmentation - 6522243.pdf
Creators: name: Zhu, Yongfei
name: Xu, Xiang
name: Zhang, Xuedian
name: Jiang, Minshan
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: List of variables
Has the gender gap in voter turnout really disappeared?
Creators: name: Kostelka, Filip
name: Blais, André
name: Gidengil, Elisabeth
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: According to conventional wisdom, the traditional gender gap in voting has disappeared or even reversed in most established democracies. Drawing on the existing literature on differences between the sexes in political engagement and on pioneering voter turnout theories, this article questions the conventional assumption and hypothesises that women still participate at a lower rate in less important elections. It systematically tests this hypothesis by exploring the impact of gender on voter turnout in different electoral arenas. The empirical analyses of two cross-national datasets (Making Electoral Democracy Work and the European Election Study) demonstrate that although there is generally no gender gap in first-order elections, women tend to vote less than men in second-order contests. This reflects lower levels of interest in politics among women and their lower levels of knowledge about politics when it comes to second-order elections.
Gauge Invariant three Boson Vertices and their Ward Identities in the Standard Model
Creators: name: Papavassiliou, J.
name: Philippides, K.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the context of the Standard Model we extend the S--matrix pinch technique for non--conserved currents to the case of three boson vertices. We outline in detail how effective gauge invariant three boson vertices can be constructed, with all three incoming momenta {\it off--shell}. Explicit closed expressions for the vertices $γW^- W^+$, $Z W^- W^+$, and $χW^- W^+$ are reported. The three boson vertices so constructed satisfy naive QED--like Ward identities which relate them to the gauge invariant gauge boson self--energies previously constructed by the same method. The derivation of the aforementioned Ward identities relies on the sole requirement of complete gauge invariance of the S--matrix element considered; in particular, no knowledge of the explicit closed form of the three boson vertices involved is necessary.The validity of one of these Ward identities is demonstrated explicitly, through a detailed diagrammatic one-loop analysis, in the context of three different gauges.
description: 37 pages and 13 figures all included in a uucoded file
Additional file 2 of Optimized Cas9:sgRNA delivery efficiently generates biallelic MSTN knockout sheep without affecting meat quality
Creators: name: Zhou, Shiwei
name: Kalds, Peter
name: Luo, Qi
name: Sun, Kexin
name: Zhao, Xiaoe
name: Gao, Yawei
name: Cai, Bei
name: Huang, Shuhong
name: Kou, Qifang
name: Petersen, Bjoern
name: Chen, Yulin
name: Ma, Baohua
name: Wang, Xiaolong
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Additional file 2: Figure S1. Overlapping or discontinuous peaks in Sanger sequencing of DNA samples obtained from the eight founder animals. Figure S2. Detection of potential off-targeted sites in the eight founder animals by Sanger sequencing. Ten potential off-targeted sites (OT1-OT10) were predicted by Cas-OFFinder [38]. Description: The file contains the results of Sanger sequencing for on- and off-target loci in gene-edited animals.
5-branes, KK-monopoles and T-duality
Creators: name: Eyras, Eduardo
name: Janssen, Bert
name: Lozano, Yolanda
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the explicit worldvolume effective actions of the type IIB NS-5-brane and KK-monopole. These objects are obtained through a T-duality transformation from the IIA KK-monopole and the IIA NS-5-brane respectively. We show that the worldvolume field content of these actions is precisely that necessary to describe their worldvolume solitons. The IIB NS-5-brane effective action is shown to be related to the D-5-brane's by an S-duality transformation, suggesting the way to construct (p,q) 5-brane multiplets. The IIB KK-monopole is described by a gauged sigma model, in agreement with the general picture for KK-monopoles, and behaves as a singlet under S-duality. We derive the explicit T-duality rules NS-5-brane -- KK, which we use for the construction of the previous actions, as well as NS-5 -- NS-5, and KK -- KK.
description: latex file, 34 pgs, 3 figures, typos corrected, version to appear in Nucl. Phys. B
A Framework for Planet Detection with Faint Light-curve Echoes
Creators: name: Mann, Chris
name: Tellesbo, Christopher A.
name: Bromley, Benjamin C.
name: Kenyon, Scott J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A stellar flare can brighten a planet in orbit around its host star, producing a light curve with a faint echo. This echo, and others from subsequent flares, can lead to the planet's discovery, revealing its orbital configuration and physical characteristics. A challenge is that an echo is faint relative to the flare and measurement noise. Here, we use a method, based on autocorrelation function estimation, to extract faint planetary echoes from stellar flare light curves. A key component of our approach is that we compensate for planetary motion, measures of echo strength are then co-added into a strong signal. Using simple flare models in simulations, we explore the feasibility of this method with current technology for detecting planets around nearby M dwarfs. We also illustrate how our method can tightly constrain a planet's orbital elements and the mass of its host star. This technique is most sensitive to giant planets within 0.1 au of active flare stars and offers new opportunities for planet discovery in orientations and configurations that are inaccessible with other planet search methods.
description: Submitted to The Astronomical Journal April 9, 2018, accepted August 20, 2018, published October 12, 2018
Predicting IR Personalization Performance using Pre-retrieval Query Predictors
Creators: name: Vicente-López, Eduardo
name: de Campos, Luis M.
name: Fernández-Luna, Juan M.
name: Huete, Juan F.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Personalization generally improves the performance of queries but in a few cases it may also harms it. If we are able to predict and therefore to disable personalization for those situations, the overall performance will be higher and users will be more satisfied with personalized systems. We use some state-of-the-art pre-retrieval query performance predictors and propose some others including the user profile information for the previous purpose. We study the correlations among these predictors and the difference between the personalized and the original queries. We also use classification and regression techniques to improve the results and finally reach a bit more than one third of the maximum ideal performance. We think this is a good starting point within this research line, which certainly needs more effort and improvements.
Stabilization Procedure and Equipment
Creators: name: Tol Cherry
Year: 1980
Subjects: subject: Classic Period
valueUri: https://core.tdar.org/browse/temporal-keyword/125/classic-period
subject: Hohokam
valueUri: https://core.tdar.org/browse/culture-keyword/21/hohokam
subject: Casa Grande Ruins National Monument
valueUri: https://core.tdar.org/browse/site-name/1435/casa-grande-ruins-national-monument
subject: Archaeological Feature
valueUri: https://core.tdar.org/browse/site-type/339/archaeological-feature
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: Domestic Structure or Architectural Complex
valueUri: https://core.tdar.org/browse/site-type/251/domestic-structure-or-architectural-complex
subject: Building Materials
valueUri: https://core.tdar.org/browse/material-type/8/building-materials
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Archaeological Overview
valueUri: https://core.tdar.org/browse/investigation-type/1/archaeological-overview
subject: Historic Background Research
valueUri: https://core.tdar.org/browse/investigation-type/18/historic-background-research
subject: Site Stabilization
valueUri: https://core.tdar.org/browse/investigation-type/11/site-stabilization

description: This document is a detailed description of the materials needed and procedures outlined for stabilization of prehistoric structures at Casa Grande Ruins National Monument. Featured is a mixing procedure that includes the formula mixture of amendment, soils and sand. There are details of application timing and consequences in mixing and applying incorrect mix formulas.
Synthesis and characterization of water-soluble arene-ruthenium complexes and their application in biphasic olefin oxidation
Creators: name: Gichumbi, Joel M.
name: Friedrich, Holger B.
name: Omondi, Bernard
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Computational Biology

description: New water-soluble complexes [(η6-C6H6)RuCl(C5H4N-2-CH = N-R)]Cl (1) (with R = 4-hydroxymethylphenyl (a), 2,4-dichlorophenyl (b), 2-fluorophenyl (c), 3-carboxyphenyl (d)) have been synthesized by reacting [(η6-C6H6)Ru(μ-Cl)Cl]2 with the N,N′-bidentate ligands in a 1:2 ratio. Full characterization of all complexes was accomplished using 1H and 13C NMR, elemental analyses, UV-Vis spectroscopy, IR spectroscopy and single crystal X-ray crystallography for determination of the structure of 1d, as 1d·4H2O. The single crystal structure confirmed coordination of the ligand to the ruthenium(II) center leading to a structure commonly described as a pseudo-octahedral, three-legged piano stool. The geometry around the Ru(II) center is such that the arene ring occupies the apex of the stool while the N,N′-bidentate ligand and a chloride occupy the base of the stool. The synthesized Ru(II) complexes were tested as catalysts for oxidation of styrene using NaIO4 as a co-oxidant in a biphasic system. All complexes were active, giving good yields of benzaldehyde. Catalyst 1c was later investigated for olefin oxidation and gave high yields of the corresponding aldehydes as the major products in all cases.
Leveraging Deep Learning for Time Series Extrinsic Regression in predicting photometric metallicity of Fundamental-mode RR Lyrae Stars
Creators: name: Monti, Lorenzo
name: Muraveva, Tatiana
name: Clementini, Gisella
name: Garofalo, Alessia
Publisher: name: arXiv
Year: 2024
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Astronomy is entering an unprecedented era of Big Data science, driven by missions like the ESA's Gaia telescope, which aims to map the Milky Way in three dimensions. Gaia's vast dataset presents a monumental challenge for traditional analysis methods. The sheer scale of this data exceeds the capabilities of manual exploration, necessitating the utilization of advanced computational techniques. In response to this challenge, we developed a novel approach leveraging deep learning to estimate the metallicity of fundamental mode (ab-type) RR Lyrae stars from their light curves in the Gaia optical G-band. Our study explores applying deep learning techniques, particularly advanced neural network architectures, in predicting photometric metallicity from time-series data. Our deep learning models demonstrated notable predictive performance, with a low mean absolute error (MAE) of 0.0565, the root mean square error (RMSE) achieved is 0.0765 and a high $R^2$ regression performance of 0.9401 measured by cross-validation. The weighted mean absolute error (wMAE) is 0.0563, while the weighted root mean square error (wRMSE) is 0.0763. These results showcase the effectiveness of our approach in accurately estimating metallicity values. Our work underscores the importance of deep learning in astronomical research, particularly with large datasets from missions like Gaia. By harnessing the power of deep learning methods, we can provide precision in analyzing vast datasets, contributing to more precise and comprehensive insights into complex astronomical phenomena.
description: Sensors 2024, 24(16), 5203; (23 pages)
Abundance analysis of the slow nova PW Vulpeculae 1984
Creators: name: Schwarz, Greg J.
name: Starrfield, S.
name: Shore, Steven N.
name: Hauschildt, Peter H.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We determine the elemental abundances for the ejecta of the slow nova PW Vul 1984. Our technique uses a minimization of the emission line fits of a photoionization model to available ultraviolet, optical and infrared spectra. We find the following abundances (by number) with respect to solar: He/H = 1.0 $\pm$ 0.4, C/H = 7.0 $^{+7}_{-4}$, N/H = 85 $^{+59}_{-41}$ and O/H = 6 $^{+7}_{-2}$. In addition, there is weak evidence for solar Ne and Mg and twice solar Fe. Previous studies (Saizar et al. 1991 and Andreä et al. 1991, 1994) of PW Vul have yielded considerable differences in their derived elemental abundances for the ejecta. Our abundances fall in between the previous studies. To explain the discrepant abundances, we analyze in detail the data and methods used to obtain the previous results. The abundances of Saizar et al. (1991) are significantly smaller then our values because of the lower electron temperature used by Saizar et al. in deriving elemental abundances from ion abundances. Andreä et al. (1991) used an ionization correction method to obtain their abundances and verified their results with a photoionization model (Andreä et al. 1994). Our analysis of their data shows that the absolute fluxes of the optical emission lines used by Andreä are underestimated by 15% leading to a factor of 2 increase in their derived abundances. We also find the photoionization model used by Andreä et al. (1994) predicts 2 times more carbon than the photoionization code we used even when fitting the same data with similar model parameters.
description: 9 pages, figures not included, full text with figures available at ftp://calvin.physast.uga.edu/pub/preprints/PW-Vul.ps.gz, MNRAS, in press
The Role of Grain Boundaries under Long-Time Radiation
Creators: name: Zhu, Yichao
name: Luo, Jing
name: Guo, Xu
name: Xiang, Yang
name: Chapman, Stephen Jonathan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Materials containing a high proportion of grain boundaries offer significant potential for the development of radiation-resistent structural materials. However, a proper understanding of the connection between the radiation-induced microstructural behaviour of grain boundary and its impact at long natural time scales is still missing. In this letter, point defect absorption at interfaces is summarised by a jump Robin-type condition at a coarse-grained level, wherein the role of interface microstructure is effectively taken into account. Then a concise formula linking the sink strength of a polycrystalline aggregate with its grain size is introduced, and is well compared with experimental observation. Based on the derived model, a coarse-grained formulation incorporating the coupled evolution of grain boundaries and point defects is proposed, so as to underpin the study of long-time morphological evolution of grains induced by irradiation. Our simulation results suggest that the presence of point defect sources within a grain further accelerates its shrinking process, and radiation tends to trigger the extension of twin boundary sections.
Phylogenetic analysis of sooty grunter and other major freshwater fishes in the suborder Percoidei based on mitochondrial DNA
Creators: name: Lixiang Zhao
name: Junjian Dong
name: Chengfei Sun
name: Yuanyuan Tian
name: Hu, Jie
name: Ye, Xing
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Perciformes is the largest order of fishes and vertebrates. Sooty grunter (Hephaestus fuliginosus) is an economic fish species in the Terapontidae family of Percoidei, a suborder within Perciformes. To conduct molecular-level analysis of the phylogenetic relationships between sooty grunter and major freshwater fishes in Percoidei, we analysed the entire sooty grunter mitochondrial genome sequence and obtained the mitochondrial genome information of 19 fishes from Terapontidae, Serranidae, and Centrarchidae families in Percoidei from GenBank. The complete length of the sooty grunter mitochondrial genome was 16,770 bp; it encoded 13 proteins, 2 rRNAs, 22 tRNAs, and a displacement loop (D-loop). Other than ND6 and eight tRNA genes that are encoded by the light strand, the majority of genes are encoded by the heavy strand. The sequence and distribution of sooty grunter mitochondrial-encoded genes and non-coding segment were similar to those of most vertebrates. The results of neighbour joining, maximum parsimony, and Bayesian inference analyses of the complete mitochondrial genome and six genes, including cytochrome oxidase I, cytochrome B, 12S rRNA, ND2, ND4, and ND5, were consistent. In the phylogenetic trees, fishes in Terapontidae and Centrarchidae formed monophyletic clades, whereas those in Serranidae were divided into two clades, each containing Lateolabrax and Siniperca species. Among the three freshwater fish species in Terapontidae, the freshwater Terapontidae were more closely related to jade perch than with silver perch, suggesting that freshwater Terapontidae fishes originate from marine fishes. In addition, the phylogenetic results indicated that Micropterus salmoides salmoides and Micropterus salmoides floridanus in Centrarchidae should be designated as two independent species, and Siniperca in Serranidae should be considered an independent family. The sooty grunter mitochondrial genome sequence obtained in this study could be used to conduct population genetic diversity and germplasm resource studies. Furthermore, the phylogenetic analysis results of freshwater fishes in Percoidei could provide a molecular basis for cross-breeding.
Additional file 1: of Timing of treatment interruption among latently infected tuberculosis cases treated with a nine-month course of daily isoniazid: findings from a time to event analysis
Creators: name: SĂŠraphin, Marie
name: Hsu, HsiaoChu
name: Chapman, Helena
name: de Andrade Bezerra, Joanne
name: Johnston, Lori
name: Yang, Yang
name: Lauzardo, Michael
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Supplementary Figures S1 â S3. (PDF 561 kb)
On coherent particle production in central 4.3 A Gev/c Mg-Mg collisions
Creators: name: Gogiberidze, G. L.
name: Gelovani, L. K.
name: Sarkisyan, E. K.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Features of dense groups, or spikes, of negative pions produced in Mg-Mg collisions at 4.3 GeV/c/nucleon are studied to search for a coherent, Cerenkov-like, mechanism of particle production process. We investigate the distributions of spike centers and, for the first time, the energy spectra of particles in spikes. The spike-center distributions are obtained to exhibit the structure due to the coherent gluon-jet emission dynamics. This structure is similar to that observed recently for all-charged-particle spikes in hadronic and nuclear interactions. The energy distribution within spikes is found to have a significant peak over the inclusive background, while the inclusive spectrum shows exponential decrease with two characteristic values of average kinetic energy. The value of the peak energy and its width are in a good agreement with those expected for pions produced in a nuclear medium in the framework of the Cerenkov quantum approach. The peak energy obtained is consistent with the value of the cross-section maximum observed in coincidence experiments of nucleon-nucleus interactions.
description: 9 pages, 3 eps figures, LaTeX
Duality in SU(N) x SU(N') Product Group from M theory
Creators: name: Lee, Julian
name: Sin, Sang-Jin
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We generalize the M-theoretic duality of Schmaltz and Sundrum to the product group SU(N) x SU(N') case. We show that the type IIA brane configurations for dual gauge theories are in fact two special limits of the same M-theory 5-brane, just as in the case of the simple SU(N) group.
description: Latex, 15 pages, 4 figures. The title, abstract and contents are modified in order to give a more clear presentation. The misleading remark on S-duality transformation is removed. The version to appear in Mod. Phys. Lett. A
Characterisation of hydromagnetic waves propagating over a steady, non-axisymmetric background magnetic field
Creators: name: Barrois, Olivier
name: Aubert, Julien
Publisher: name: arXiv
Year: 2024
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Motivated by recent observations of rapid (interannual) signals in the geomagnetic data, and by advances in numerical simulations approaching the Earth's outer core conditions, we present a study on the dynamics of hydromagnetic waves evolving over a static base state. Under the assumption of timescales separation between the rapid waves and the slow convection, we linearise the classical magneto-hydrodynamics equations over a steady non-axisymmetric background magnetic field and a zero velocity field. The initial perturbation is a super-rotating pulse of the inner core, which sets the amplitude and length-scales of the waves in the system. The initial pulse triggers axisymmetric, outward propagating torsional Alfvén waves, with characteristic thickness scaling with the magnetic Ekman number as $Ek_M^{1/4}$. Because the background state is non-axisymmetric, the pulse also triggers non-axisymmetric, quasi-geostrophic Alfvén waves. As these latter waves propagate outwards, they turn into quasi-geostrophic, magneto-Coriolis waves (QG-MC) as the Coriolis force supersedes inertia in the force balance. The period of the initial wave packet is preserved across the shell but the QG-MC wave front disperses and a westward drift is observed after this transformation. Upon reaching the core surface, the westward drift of the QG-MC waves presents an estimated phase speed of about $1100\,km/y$. This analysis confirms the QG-MC nature of the rapid magnetic signals observed in geomagnetic field models near the equator.
description: 18 pages, 7 figures
Time-dependent fluctuations in the metagalactic photoionization background
Creators: name: Meiksin, Avery
name: McQuinn, Matthew
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a formalism for computing time-dependent fluctuations in the cosmological photoionizing radiation background, extending background fluctuations models beyond the steady-state approximation. We apply this formalism to estimate fluctuations in the HI LyA flux redshift space power spectrum and its spatial correlation function at redshifts 2
description: 23 pages, 17 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society: https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/sty2907/5145861
ASCA observations of type-2 Seyfert galaxies: II. The Importance of X-ray Scattering and Reflection
Creators: name: Turner, T. J.
name: George, I. M.
name: Nandra, K.
name: Mushotzky, R. F.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the importance of X-ray scattering and Compton reflection in type-2 Seyfert galaxies, based upon the analysis of ASCA observations of 25 such sources. Consideration of the iron Kalpha, [O III] line and X-ray variability suggest that NGC 1068, NGC 4945, NGC 2992, Mrk 3, Mrk 463E and Mrk 273 are dominated by reprocessed X-rays. We examine the properties of these sources in more detail. We find that the iron Kalpha complex contains significant contributions from neutral and high-ionization species of iron. Compton reflection, hot gas and starburst emission all appear to make significant contributions to the observed X-ray spectra. Mrk 3 is the only source in this subsample which does not have a significant starburst contamination. The ASCA spectrum below 3 keV is dominated by hot scattering gas with U_X ~ 5, N_H ~ 4 x 10^23 cm^-2. This material is more highly ionized than the zone of material comprising the warm absorber seen in Seyfert~1 galaxies, but may contain a contribution from shock-heated gas associated with the jet. Estimates of the X-ray scattering fraction cover 0.25 - 5%. The spectrum above 3 keV appears to be dominated by a Compton reflection component although there is evidence that the primary continuum component becomes visible close to 10 keV.
description: 27 pages, 6 figures. LaTeX with encapsulated postscript. To appear in the Astrophysical Journal. Also available via http://lheawww.gsfc.nasa.gov/~george/papers/gnt_s2p2/abstract.html
Stability of the Positive Mass Theorem for Axisymmetric Manifolds
Creators: name: Bryden, Edward T.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C24, 53C80, 83C99

description: Away from the central axis, we prove the stability of the Positive Mass Theorem in the $W^{1,p}$ sense for asymptotically flat axisymmetric manifolds with nonnegative scalar curvature satisfying some additional technical assumptions. We also derive estimates for the volumes of regions, the areas of axisymmetric surfaces, and the distances between points within the manifolds.
description: 44 pages
Pulsar Astrometry in the Presence of Low Frequency Noise
Creators: name: Rodin, Alexander Evgenievich
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The following results of dissertation are submitted for defense:
 1. Precise measurements of coordinates and proper motion of the pulsar PSR 0329+54 using the VLBI method. 2. Establishing of the reason for the discrepancy between the coordinates of pulsars measured by VLBI and timing methods, which comes down to the influence of low-frequency noise at the time of pulse arrivals (TOAs) from the pulsar. 3. A special method for processing timing observations that allows you to correct TOA - coordinates of pulsars. 4. Theoretical dependencies of the behavior of dispersion of pulsar parameter depending on the observation interval and the type of correlated noise, on the basis of which it became possible to propose a new time scale BPT based on the orbital motion of pulsar in binary system stable over long periods of time (more than 10 years). 5. A theory that explains spontaneous changes in the rotational frequency of pulsars through their interaction with the passing gravitating mass and the theoretical power spectrum of low-frequency fluctuations of the pulsar rotational phase caused by gravitational disturbances from the passage of bodies near the pulsar.
description: Dissertation for an academic degree of candidate of physical and mathematical sciences (PhD thesis). Dissertation was defended 14 Feb 2000 in Lebedev Physical Institute of Russian Academy of Sciences, Moscow. 97 pages, 19 figures, 11 tables. Translated from Russian by author
State of the art and perspectives on mass imaging of pinned insects
Creators: name: Wu, Zhengzhe
name: Koivunen, Anne
name: Saarenmaa, Hannu
name: Van Walsum, Myriam
name: Wijers, Agnes
name: Willemse, Luc
name: Ylinampa, Toivo
Publisher: name: Zenodo
Year: 2019
Subjects: Digitisation, Pinned Insects, 3D Objects

description: This report describes the state of art and work in progress on automated methods in mass-digitisation of pinned insects. The report begins by identifying the challenges, which stem from the fact that pinned insects are basically 3D objects and their numbers in collections are huge, up to one billion objects in Europe. A ten-fold increase in the speed of their digitisation from the current state of art is being sought for. Based on recent developments, state-of-the-art in their digitisation is covered. Important new technologies which seem promising in insect digitisation are described. The report describes the experiments which the ICEDIG project has carried out in order to find new innovations in mass-digitisation of pinned insects. We identify six such possible approaches, scoping their features, applicability, possible benefits and limitations, and make recommendations. Progress on the ongoing developments in three experiments is described in detail. We conclude that achieving a breakthrough in insect digitisation probably requires a combination of existing and new technologies in novel workflows.
description: {"references": ["Ylinampa T, Saarenmaa H (2019) Photogrammetrical insect collection capturing system (ENTODIG-3D). Biodiversity_next conference, Leiden, the Netherlands 2019-10-21/25. Abstract (in print).", "Nieva A, Rosin P, Sun X (2018) Specifications of tests on automated methods for mass 3D imaging.H2020-INFRADEV-2017-1 Project ICEDIG, Grant Agreement Number 777483. Milestone MS16 report,11 p. Cardiff University.", "Agarwal, N., Ferrier, N., & Hereld, M. (2018, March). Towards Automated Transcription of Label Textfrom Pinned Insect Collections. In2018 IEEE Winter Conference on Applications of Computer Vision(WACV) (pp. 189-198)."]}