cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gravitational instability and star formation in disk galaxies
Creators: name: Pandey, U. S.
name: van de Bruck, C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a general star formation law where star formation rate depends upon efficiency $α$, timescale $τ$ of star formation, gas component $σ_{g}$ of surface mass density and a real exponent $n$. A given exponent $n$ determines $τ$ which however yields the corresponding star formation rate. Current nominal Schmidt exponent $n_{s}$ for our model is $2
description: 10 pages, 3 figures, submitted to MNRAS
Some Lower and Upper Bounds on the Third ABC Co-index
Creators: name: Revankar, Deepak S.
name: Hande, Priyanka S.
name: Hande, Satish P.
name: Teli, Vijay
Publisher: name: figshare
Year: 2018
Subjects: subject: 10104 Combinatorics and Discrete Mathematics (excl. Physical Combinatorics)
subject: FOS: Mathematics

description: In this paper, we defined a new index which is called third ABC Coindex.
Radio Galaxy Shape Measurement with Hamiltonian Monte Carlo in the Visibility Domain
Creators: name: Rivi, M.
name: Lochner, M.
name: Balan, S. T.
name: Harrison, I.
name: Abdalla, F. B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Radio weak lensing, while a highly promising complementary probe to optical weak lensing, will require incredible precision in the measurement of galaxy shape parameters. In this paper, we extend the Bayesian Inference for Radio Observations model fitting approach to measure galaxy shapes directly from visibility data of radio continuum surveys, instead of from image data. We apply a Hamiltonian Monte Carlo (HMC) technique for sampling the posterior, which is more efficient than the standard Monte Carlo Markov Chain method when dealing with a large dimensional parameter space. Adopting the exponential profile for galaxy model fitting allows us to analytically calculate the likelihood gradient required by HMC, allowing a faster and more accurate sampling. The method is tested on SKA1-MID simulated observations at 1.4 GHz of a field containing up to 1000 star-forming galaxies. It is also applied to a simulated observation of the weak lensing precursor survey SuperCLASS. In both cases we obtain reliable measurements of the galaxies' ellipticity and size for all sources with SNR $\ge 10$, and we also find relationships between the convergence properties of the HMC technique and some source parameters. Direct shape measurement in the visibility domain achieves high accuracy at the expected source number densities of the current and next SKA precursor continuum surveys. The proposed method can be easily extended for the fitting of other galaxy and scientific parameters, as well as simultaneously marginalising over systematic and instrumental effects.
description: 15 pages, 10 figures, 3 tables
Some Properties of Conformal β-Change
Creators: name: H.S. Shukla
name: Mishra, Neelam
Publisher: name: figshare
Year: 2018
Subjects: subject: 10104 Combinatorics and Discrete Mathematics (excl. Physical Combinatorics)
subject: FOS: Mathematics

description: We have studied quasi-C-reducibility, C-reducibility and semi-C-reducibility of the Finsler space with this metric. We have also calculated V-curvature tensor and T-tensor of the space with this changed metric in terms of v-curvature tensor and T-tensor respectively of the space with the original metric.
Extending the boundaries of the resorcylates and dioxinones
Creators: name: Patel, Bhavesh
Publisher: name: Imperial College London
Year: 2012

description: The conversion of various carboxylate derivatives ii,iv and dioxinone i (Scheme A1) into C-6-substituted resorcylates vii,(a) related dihydroxy-isoindolinones viii,(a),(b) C-5-substituted dioxinone-resorcylates x, and resorcinol amides xi, without the use of phenolic protection is described. The key diketo- v and formyl-keto- ix dioxinone intermediates were prepared from keto-dioxinones iii utilizing a crossed Claisen condensation reaction mediated by diethylzinc. The aromatic unit was constructed via late stage cyclization and aromatization. The substrate scope of this synthesis was good and some selected examples are shown in Figure A1. Several of these resorcylate related compounds displayed promising biological activities against a selection of kinases and receptors including CDKs and LRH-1. The synthesis of Hsp90 inhibitor AT13387 (xiv) currently in clinical trials,(c) is reported using our biomimetic aromatization approach, with generation of key intermediates xii and xiii (Scheme A2), and in an improved overall yield (13.4%, compared to 2.6%). Thermolysis of double dioxinone xv with methanol gave a triketo-ester which subsequently aromatized to provide a synthetically useful homophthalate ester xvi (Scheme A3).(d) Enolate C-acylation with diethylzinc was used to form double diketo-dioxinones xvii, which on cyclization, aromatization and dioxinone ring opening gave double resorcylates xviii. The synthesis of various 6-substituted-4-hydroxy-2-pyridinones xxi is also described (Scheme A4).(e) The functionalized keto-dioxinones xix have been transformed into the corresponding enamine-dioxinones xx. Subsequent thermolysis and intramolecular ketene trapping efficiently provided the pyridinone unit.
Monhystra filiformis Butschli 1873
Creators: name: Thorne, Gerald
Publisher: name: Zenodo
Year: 1929
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Chromadorea
Rhabditida
Criconematidae
Monhystra
Monhystra filiformis

description: Monhystra ﬁliformis Bütschli, 1873.
Only ﬁve specimens of this minute, agile species appeared in this collection. It frequently appears in high mountain soils, especially those along streams and lakes. Fig. 13a-b. 1000 x.
description: Published as part of Thorne, Gerald, 1929, Nematodes from the Summit of Long's Peak, Colorado, pp. 181 in Transactions of the American Microscopical Society 48 (2) on pages 192-193, DOI: 10.2307/3222211, http://zenodo.org/record/10797374
Dark Energy from Ratio Gravity
Creators: name: Liu, Jackie C. H.
name: Wang, Yi
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The theory of Ratio Gravity (RG) proposes that the curvature of 3+1 spacetime originates from a deformation of a Cross Ratio, where similar mathematical structure to general relativity emerges. This paper studies RG using the framework of the Newman-Penrose spin formalism. After proposing the general formalism, we move on to study a homogeneous and isotropic universe with RG. It is noted that the theory contains a component of dynamical dark energy with novel equation of state.
description: 7 pages. v3 accepted for publication
Quantum negative sampling strategy for knowledge graph embedding with variational circuit
Creators: name: Giri, Pulak Ranjan
name: Kurokawa, Mori
name: Saito, Kazuhiro
Publisher: name: arXiv
Year: 2025
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Knowledge graph is a collection of facts, known as triples(head, relation, tail), which are represented in form of a network, where nodes are entities and edges are relations among the respective head and tail entities. Embedding of knowledge graph for facilitating downstream tasks such as knowledge graph completion, link prediction, recommendation, has been a major area of research recently in classical machine learning. Because the size of knowledge graphs are becoming larger, one of the natural choices is to exploit quantum computing for knowledge graph embedding. Recently, a hybrid quantum classical model for knowledge graph embedding has been studied in which a variational quantum circuit is trained. One of the important aspects in knowledge graph embedding is the sampling of negative triples, which plays a crucial role in efficient training of the model. In classical machine learning various negative sampling strategies have been studied. In quantum knowledge graph embedding model, although we can use these strategies in principle, it is natural to ask if we can exploit quantum advantage in negative sampling. In this article we study such a negative sampling strategy, which exploits quantum superposition, and evaluate the model's performance with a knowledge graph database.
description: 2 pages, 1 figure, IEEE QCE23
Additional file 1 of Implementing an automated monitoring process in a digital, longitudinal observational cohort study
Creators: name: Lindner, Lisa
name: Weiß, Anja
name: Reich, Andreas
name: Kindler, Siegfried
name: Behrens, Frank
name: Braun, Jürgen
name: Listing, Joachim
name: Schett, Georg
name: Sieper, Joachim
name: Strangfeld, Anja
name: Regierer, Anne C.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1: Detailed description of the monitoring process in RABBIT-SpA.
title: ADCO, Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Cart. 29 (G 134), 996 folios, f. 0524
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0524, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0524, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Some Parameters of Domination on the Neighborhood Graph
Creators: name: M. H. Akhbari
name: F. Movahedi
name: S. V. R. Kulli
Publisher: name: figshare
Year: 2018
Subjects: subject: 10104 Combinatorics and Discrete Mathematics (excl. Physical Combinatorics)
subject: FOS: Mathematics

description: In this paper, we obtain the domination number, the total domination number and the independent domination number in the neighborhood graph. We also investigate these parameters of domination on the join and the corona of two neighborhood graphs.
Coevolutionary interactions between bacteria and phage in natural environments
Creators: name: Bankier, Claire
Publisher: name: Imperial College London
Year: 2016

description: Bacteria and their viruses (bacteriophage, phage) are the most abundant and diverse taxonomic groups, but ecological and evolutionary research on bacteria-phage interactions has largely focused on studies of simplified communities using a few model organisms. The goal of the thesis is to understand how bacteria and phage interact within natural environments, and how these interactions impact the patterns of phage infectivity and bacterial resistance. Here I investigate the effects of natural environments on the coevolutionary patterns of bacteria (Pseudomonas fluorescens) and phage (SBW25Φ2). In chapter 3 I investigate the effects of nineteen different communities on the coevolutionary interactions of SBW25 and phage, and the degree to which the infectivity of phage to its host, SBW25, changes depending on their local microbial community. Chapter 4 aimed to understand the effects of varying diversities of communities on coevolutionary interactions. In Chapter 5, I looked at how coevolutionary interactions were affected by different communities in different abiotic conditions (pH, temperature and nutrient concentration) and the effect communities had on the ability of SBW25 to adapt to the abiotic conditions. Understanding how biological and physical factors affect coevolutionary interactions in natural environments allows predictions of how phage and bacteria coevolve in natural and unnatural settings.
Critical slowdown of non-equilibrium polaron dynamics
Creators: name: Nielsen, Kristian Knakkergaard
name: Ardila, Luis A. Peña
name: Bruun, Georg M.
name: Pohl, Thomas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the quantum dynamics of a single impurity following its sudden immersion into a Bose-Einstein condensate. The ensuing formation of the Bose polaron in this general setting can be seen as impurity decoherence driven by the condensate, which we describe within a master equation approach. We derive rigorous analytical results for this decoherence dynamics, and thereby reveal distinct stages of its evolution from a universal stretched exponential initial relaxation to the final approach to equilibrium. The associated polaron formation time exhibits a strong dependence on the impurity speed and is found to undergo a critical slowdown around the speed of sound of the condensate. This rich non-equilibrium behaviour of quantum impurities is of direct relevance to recent cold atom experiments, in which Bose polarons are created by a sudden quench of the impurity-bath interaction.
description: 25 pages, 10 figures
Some New Families of 4-Prime Cordial Graphs
Creators: name: R. Ponraj
name: Rajpal Singh
name: R. Kala
Publisher: name: figshare
Year: 2018
Subjects: subject: 10104 Combinatorics and Discrete Mathematics (excl. Physical Combinatorics)
subject: FOS: Mathematics

description: In this paper we investigate 4-prime cordial labeling behavior of shadow graph of a path, cycle, star, degree splitting graph of a bistar, jelly fish, splitting graph of a path and star.
The low-level wind structure of tropical cyclones
Creators: name: Wang, Shuai
Publisher: name: Imperial College London
Year: 2016

description: The main effects of tropical cyclones include high winds, extensive storm surges, and widespread flooding. These main effects are all closely related to the low-level wind structure, the height of which is about 2 km from the underlying surface. A physically based analytic model (λ model) is presented to describe the low-level wind structure of tropical cyclones in terms of one intensity measure, one size measure, and the storm meridional position. The λ model provides an accurate fit of the near-surface azimuthal wind field simulated with an idealized full-physics numerical model. This numerical model is further applied to investigate the tropical cyclone low-level wind structure evolution during the mature stage with observations. Three basic features at the mature stage are observed: the outward expansion of eyewall, the reduction of intensity and the increase of tangential wind in the outer spiral bands. Model simulations show that the outer circulation expansion is accompanied by the outward migration of diabatic heating at mid-level in the eyewall. The outward movement of eyewall is caused by the opposing angular momentum transports. Consequently, the intensity decays due to the angular momentum conservation and cyclostrophic adjustment, which is captured in a new analytic pressure-wind relationship derived from the λ model. To investigate the relationship between the tropical cyclone damage and low-level wind structure, the λ model is used to reconstruct the historical wind structure of hurricanes that allows us, for the first time, to calculate the correlation of damage with the integrated wind profile of all hurricanes at landfall since 1988. We find that those metrics, which include the horizontal wind structure, rather than just maximum intensity, are better correlated with the hurricane cost. The vertical wind shear over the main development region of hurricanes plays a more dominant role than the sea surface temperature in controlling these metrics and therefore also ultimately the cost of hurricanes.
Thermal Instability of Advection-Dominated Disks against Local Perturbations
Creators: name: Kato, Shoji
name: Abramowicz, Marek A.
name: Chen, Xingming
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Thermal instability is examined for advection-dominated one-temperature accretion disks. We consider axisymmetric perturbations with short wavelength in the radial direction. The viscosity is assumed to be sufficiently small for the vertical hydrostatic balance to hold in perturbed states. The type of viscosity is given either by the $α$-viscosity or by a diffusion-type stress tensor. Optically thick disks are found to be in general more unstable than optically thin ones. When the thermal diffusion is present, the optically thin disks become stable, but the optically thick disks are still unstable. The instability of the advection-dominated disks is different from that of the geometrically thin disks without advection. In the case of no advection, the thermal mode behaves under no appreciable surface density change. In the case of advection-dominated disks, however, the thermal mode occurs with no appreciable pressure change (compared with the density change), when local perturbations are considered. The variations of angular momentum and of surface density associated with the perturbations lead to a thermal instability. The astrophysical implications of this instability are briefly discussed.
description: PASJ, in press 1996, Feb; uuencoded, compressed, PS file; also available on WWW at http://fy.chalmers.se/~chen/
Luminosity Distributions within Rich Clusters - III: A comparative study of seven Abell/ACO clusters
Creators: name: Driver, Simon P.
name: Couch, Warrick J.
name: Phillipps, Steven
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We recover the luminosity distributions over a wide range of absolute magnitude (-24.5 < M_{R} < -16.5) for a sample of seven rich southern galaxy clusters. We find a large variation in the ratio of dwarf to giant galaxies, DGR: 0.8\le $ DGR $\le 3.1. This variation is shown to be inconsistent with a ubiquitous cluster luminosity function. The DGR shows a smaller variation from cluster to cluster in the inner regions (r \ls 0.56 Mpc). Outside these regions we find the DGR to be strongly anti-correlated with the mean local projected galaxy density with the DGR increasing towards lower densities. In addition the DGR in the outer regions shows some correlation with Bautz-Morgan type. Radial analysis of the clusters indicate that the dwarf galaxies are less centrally clustered than the giants and form a significant halo around clusters. We conclude that measurements of the total cluster luminosity distribution based on the inner core alone are likely to be severe underestimates of the dwarf component, the integrated cluster luminosity and the contribution of galaxy masses to the cluster's total mass. Further work is required to quantify this. The observational evidence that the unrelaxed, lower density outer regions of clusters are dwarf-rich, adds credence to the recent evidence and conjecture that the field is a predominantly dwarf rich environment and that the dwarf galaxies are under-represented in measures of the local field luminosity function.
description: 31 pages including 11 figures. Also available from http://star-www.st-and.ac.uk/~spd3/bib.html
Smarandache Curves of Curves lying on Lightlike Cone
Creators: name: Kahraman, Tanju
name: Ugurlu, Hasan Huseyin
Publisher: name: figshare
Year: 2018
Subjects: subject: 10104 Combinatorics and Discrete Mathematics (excl. Physical Combinatorics)
subject: FOS: Mathematics

description: In this paper, we consider the notion of the Smarandache curves by considering the asymptotic orthonormal frames of curves lying fully on lightlike cone in Minkowski 3-space.
Munich, Bayerische Staatsbibliothek, Cgm 537, fol. 329v-337r, transcription normalisée (Gregorius Digital D4-2)
Creators: name: Andersen, Peter
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025

description: Ce document PDF est une transcription normalisée du manuscrit Munich, Bayerische Staatsbibliothek, Cgm 537, fol. 329v-337r, contient le récit du Bon Pécheur et est édité dans le cadre du projet Gregorius Digital sous le sigle D4-2 (dir. Peter Andersen – ARCHE UMR 3400 – Université de Strasbourg)
Improved CMB anisotropy constraints on primordial magnetic fields from the post-recombination ionization history
Creators: name: Paoletti, D.
name: Chluba, J.
name: Finelli, F.
name: Rubino-Martin, J. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the impact of a stochastic background of Primordial Magnetic Fields (PMF) generated before recombination on the ionization history of the Universe and on the Cosmic Microwave Background radiation (CMB). Pre-recombination PMFs are dissipated during recombination and reionization via decaying MHD turbulence and ambipolar diffusion. This modifies the local matter and electron temperatures and thus affects the ionization history and Thomson visibility function. We use this effect to constrain PMFs described by a spectrum of power-law type, extending our previous study (based on a scale-invariant spectrum) to arbitrary spectral index. We derive upper bounds on the integrated amplitude of PMFs due to the separate effect of ambipolar diffusion and MHD decaying turbulence and their combination. We show that ambipolar diffusion is relevant for $n_{\rm B}>0$ whereas for $n_{\rm B}<0$ MHD turbulence is more important. The bound marginalized over the spectral index on the integrated amplitude of PMFs with a sharp cut-off is $\sqrt{\langle B^2 \rangle}<0.83$ nG. We discuss the quantitative relevance of the assumptions on the damping mechanism and the comparison with previous bounds.
description: 11 pages, 21 figures. Minor updates to match the published version
Rhabdolaimus terrestris deMan 1884
Creators: name: Thorne, Gerald
Publisher: name: Zenodo
Year: 1929
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Enoplida
Rhabdolaimidae
Rhabdolaimus
Rhabdolaimus terrestris

description: Rhabdolaimus terrestris deMan, 1884.
 Cuticle thick with exceedingly ﬁne striae. The amphids are elongate oval markings one-eighth the head width and have deep inner connections plainly visible from a lateral view. No papillae or setae are visible. At the opening of the pharynx are three refractive denticle-like organs similar to those of Ironus. The eggs are three to four times as long as the body width and usually crowd the ovaries out of position. The long tapering tail ends in a very prominent pointed spinneret four times as long as wide. Fig. 14a—c.
This rare species has been collected by the writer only from high mountain soils. Three specimens were in this collection.
description: Published as part of Thorne, Gerald, 1929, Nematodes from the Summit of Long's Peak, Colorado, pp. 181 in Transactions of the American Microscopical Society 48 (2) on page 193, DOI: 10.2307/3222211, http://zenodo.org/record/10797374
Evaluation of asymmetric catalysts in C–C and C–N Michael type transformations
Creators: name: Barron, Benedict James
Publisher: name: Imperial College London
Year: 2016

description: The first chapter of this thesis presents a literature survey of recent developments in asymmetric C–C and C–N conjugate addition reactions using metal mediated and organocatalytic protocols, focusing on the limitations and strengths of each system. The aim of this study will also be presented. The second chapter discusses the study of two asymmetric Pd (II) catalytic protocols in the aza-Michael reaction of N-containing arylamines with N-carbamates. The main body of work focuses on the utilisation of N-protected phenylenediamine substrates. In one case, these nucleophilic amines are poorly tolerated, with an interesting deactivation pathway uncovered. For the second protocol, high yields and ee are achieved with an interesting water effect observed. The afforded aza-adduct substrates were subsequently cyclised into tetrahydroquinoline derivatives, with particular attention paid to the regioselectivity of the transformation. This chapter also highlights the limitations of ortho-substituted anilines under these two protocols. The third chapter highlights the attempts to further extend these aza-Michael Pd(II) catalysed protocols to the reactions of substituted hydroxylamines with N-carbamates, with the overall objective of furnishing enantio-enriched aziridine products. Variation of the Michael acceptor was also explored, focusing on the utilisation of α-substituted α,β-unsaturated 1,3-dicarbonyls and alkylidene malonates in the aza-Michael addition with simple aniline derivatives. In the fourth chapter, Pd(II) catalytic protocols are applied to the asymmetric C–C Michael addition of β-ketoester and β-ketoamides to β-substituted α,β-unsaturated thioesters with little success. In contrast, the employment of an asymmetric MBI-derived phase transfer organocatalyst in the Michael addition of glycine Schiff base with various oxo and thio-ester Michael acceptors provided facile access to chiral γ-lactam derivatives. Chapter 5 contains experimental procedures and characterisation data for all synthesised compounds.
Large algebraic connectivity fluctuations in spatial network ensembles imply a predictive advantage from node location information
Creators: name: Garrod, Matthew
name: Jones, Nick S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A Random Geometric Graph (RGG) ensemble is defined by the disordered distribution of its node locations. We investigate how this randomness drives sample-to-sample fluctuations in the dynamical properties of these graphs. We study the distributional properties of the algebraic connectivity which is informative of diffusion and synchronization timescales in graphs. We use numerical simulations to provide the first characterisation of the algebraic connectivity distribution for RGG ensembles. We find that the algebraic connectivity can show fluctuations relative to its mean on the order of $30 \%$, even for relatively large RGG ensembles ($N=10^5$). We explore the factors driving these fluctuations for RGG ensembles with different choices of dimensionality, boundary conditions and node distributions. Within a given ensemble, the algebraic connectivity can covary with the minimum degree and can also be affected by the presence of density inhomogeneities in the nodal distribution. We also derive a closed-form expression for the expected algebraic connectivity for RGGs with periodic boundary conditions for general dimension.
The energetics of flat and rotating early-type galaxies and their X-ray luminosity
Creators: name: Ciotti, L.
name: Pellegrini, S.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The global energy budget of the hot gas flows in early-type galaxies is used to explain the recent observational results that S0 galaxies have lower mean X-ray luminosity $L_X$ per unit optical luminosity $L_B$ than do ellipticals. This could be explained with a higher heat input or with a lower gravitational energy (all per unit gas mass), at fixed $L_B$. The effect of the flattening of the mass distribution is investigated with galaxy models described by the Miyamoto-Nagai potential--density pair, to which a dark matter halo of various shapes is added. For these models the analytical expressions of the gravitational energy, and the stellar kinetic energy associated with various relative amounts of random motions and rotational streaming, are derived. It is found that rotation cannot produce a change in the flow phase of the hot gas, independently of the galaxy shape and the presence of dark matter. The effect of flattening instead can be substantial in reducing the binding energy of the hot gas. Thus S0s and possibly non spherical Es are less able to retain a significant halo of hot gas than rounder Es of the same $\lb$.
description: 8 pages plus 4 figures in uuencoded compressed Postscript format
Coracias caffra Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Coraciiformes
Coraciidae
Coracias
Coracias caffra

description: Coracias caffra [spec. nov.]
C. caerulea, remigibus margine exteriore luteis.
Habitat in Aethiopia. J. Burmannus.
Femina caerulescente-nigra est.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 107, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Analysis methodology of coherent oscillations in time- and angle-resolved photoemission spectroscopy
Creators: name: Gauthier, Nicolas
name: Soifer, Hadas
name: Sobota, Jonathan A.
name: Pfau, Heike
name: Sie, Edbert J.
name: Lindenberg, Aaron M.
name: Shen, Zhi-Xun
name: Kirchmann, Patrick S.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Oscillatory signals from coherently excited phonons are regularly observed in ultrafast pump-probe experiments on condensed matter samples. Electron-phonon coupling implies that coherent phonons also modulate the electronic band structure. These oscillations can be probed with energy and momentum resolution using time- and angle-resolved photoemission spectroscopy (trARPES) which reveals the orbital dependence of the electron-phonon coupling for a specific phonon mode. However, a comprehensive analysis remains challenging when multiple coherent phonon modes couple to multiple electronic bands. Complex spectral line shapes due to strong correlations in quantum materials add to this challenge. In this work, we examine how the frequency domain representation of trARPES data facilitates a quantitative analysis of coherent oscillations of the electronic bands. We investigate the frequency domain representation of the photoemission intensity and \tred{the first moment of the energy distribution curves}. Both quantities provide complimentary information and are able to distinguish oscillations of binding energy, linewidth and intensity.We analyze a representative trARPES dataset of the transition metal dichalcogenide WTe$_2$ and construct composite spectra which intuitively illustrate how much each electronic band is affected by a specific phonon mode. We also show how a linearly chirped probe pulse can generate extrinsic artifacts that are distinct from the intrinsic coherent phonon signal.
Additional file 1 of Day-to-day pattern of work and leisure time physical behaviours: are low socioeconomic status adults couch potatoes or work warriors?
Creators: name: Rasmussen, Charlotte Lund
name: Dumuid, Dorothea
name: Hron, Karel
name: Gupta, Nidhi
name: Jørgensen, Marie Birk
name: Nabe-Nielsen, Kirsten
name: Holtermann, Andreas
Publisher: name: figshare
Year: 2021
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1. Calculation of pivot-coordinates and model development. Detailed description of how pivot-coordinates were calculated and models developed.
Left ventricular remodelling in chronic kidney disease : correlation with aortic stiffness
Creators: name: Sulemane, Samir
Publisher: name: Imperial College London
Year: 2015

description: Chronic kidney disease (CKD) is associated with increased cardiovascular (CV) morbidity and mortality. Early detection of CV disease (CVD) can enable therapeutic interventions in earlier stages and potentially slow disease progression, reduce complications related to CV risk, and improve quality of life and survival rates. This prospective, observational study was designed to assess the use of novel speckle tracking echocardiography (STE) and arterial tonometry in a clinical setting. It focuses primarily on the assessment of CKD patients who have no clinical evidence of CVD and have normal left ventricular (LV) ejection fraction (LVEF) as assessed by conventional echocardiography. Our cohort comprised 106 CKD patients of all stages, 38 healthy controls and 38 risk factor matched controls that were hypertensive and/or diabetic with normal renal function The first aim of this study was to investigate the association between STE markers with worsening glomerular filtration rate (eGFR). Our data showed that worsening eGFR is associated with early and asymptomatic impairment of systolic (reduced global longitudinal strain (GLS), global longitudinal strain rate (GLSRs) and increased LV twist) and diastolic (segmental diastolic dysfunction) myocardial function. In addition, we found that both LV twist and GLS can be useful to differentiate CV involvement in patients with CKD in the presence of risk factors such as hypertension (HT) and/or diabetes mellitus (DM). The second aim was to explore a possible association between aortic pulse wave velocity (aPWV), a marker of arterial stiffness, and STE markers. The results showed that arterial stiffness was inversely and independently associated with eGFR in our cohort. Moreover, among the STE parameters, only LV twist was significantly associated with the presence of arterial stiffness. These findings suggest a close interaction between arterial and LV twist mechanics early in the CV disease continuum. Finally, we aimed to investigate the prognostic value of STE and aPWV in our cohort. Our primary endpoint was a composite of major adverse CV events (MACE). Over a median follow-up period of 49 months, 26 patients (24.5%) reached the primary endpoint. A multivariate Cox proportional hazards model showed that GLS and aPWV were significant independent predictors of outcomes. Moreover, patients with increased (more impaired) GLS and higher aPWV had reduced MACE-free rates. In summary, this study shows that, in CKD patients who have no previous history of CVD and who have normal LVEF as assessed by conventional echocardiography, early subclinical abnormalities in cardiac structure and function are associated with kidney function decline. Moreover, we demonstrated, for the first time, an association between aPWV and LV twist in CKD patients. In addition, we found that GLS and aPWV improves the characterisation of the risk in this cohort, as they are associated with the occurrence of adverse cardiac events.
The circumstellar medium of the peculiar supernova SN1997ab
Creators: name: Salamanca, Isabel
name: Cid-Fernandes, Roberto
name: Tenorio-Tagle, Guillermo
name: Telles, Eduardo
name: Terlevich, Roberto J.
name: Munoz-Tunon, Casiana
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of the slow moving wind into which the compact supernova remnant SN 1997ab is expanding. Echelle spectroscopy provides clear evidence for a well resolved narrow (Full Width at Zero Intensity, FWZI ~ 180 km/s) P-Cygni profile, both in Ha and Hb, superimposed on the broad emission lines of this compact supernova remnant. From theoretical arguments we know that the broad and strong emission lines imply a circumstellar density (n ~ 10^7 cm^-3). This, together with our detection, implies a massive and slow stellar wind experienced by the progenitor star shortly prior to the explosion.
description: 10 pages, 2 figures, acepted for publication in MNRAS. Uses referee.sty, psfig.sty and mn.sty. A postscript file can also be retrieved at http://www.strw.LeidenUniv.nl/~salamanc/latest.html
Chaos and Elliptical Galaxies
Creators: name: Merritt, David
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent results on chaos in triaxial galaxy models are reviewed. Central mass concentrations like those observed in early-type galaxies -- either stellar cusps, or massive black holes -- render most of the box orbits in a triaxial potential stochastic. Typical Liapunov times are 3-5 crossing times, and ensembles of stochastic orbits undergo mixing on time scales that are roughly an order of magnitude longer. The replacement of the regular orbits by stochastic orbits reduces the freedom to construct self-consistent equilibria, and strong triaxiality can be ruled out for galaxies with sufficiently high central mass concentrations.
description: uuencoded gziped PostScript, 12 pages including figures
An investigation into the effect of p53, miRNA-22, and MTHFD2 in cancer metabolism
Creators: name: Yang, Tianlai
Publisher: name: Imperial College London
Year: 2017

description: The effect of cell regulators on cancer metabolism can affect cancer growth. The link between the transcription factor p53, a microRNA (miRNA) with regulatory effects on cancer growth - miRNA-22, and a cancer-related metabolic enzyme MTHFD2 was explored in cancer cells. Although there was no clear link between these three factors, the effect of each individual component on cancer cell metabolism did produce interesting findings. The absence of p53 increased intermediates involved in nucleotide synthesis and reduce substrates required for glutathione synthesis in the mouse model. Overexpression of miRNA-22 at physiological levels increased glucose uptake, lactate production, and biosynthesis of serine, glycine and glycerol-3-phosphate in breast cancer cells. Knockdown of MTHFD2 caused breast cancer cells to be more reliant on exogenous glycine. The complexity of cell biology means that there is still much to be understood, and this work can hopefully contribute to ongoing research in this area.
Simulating Coulomb gases and log-gases with hybrid Monte Carlo algorithms
Creators: name: Chafaï, Djalil
name: Ferré, Grégoire
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Coulomb and log-gases are exchangeable singular Boltzmann-Gibbs measures appearing in mathematical physics at many places, in particular in random matrix theory. We explore experimentally an efficient numerical method for simulating such gases. It is an instance of the Hybrid or Hamiltonian Monte Carlo algorithm, in other words a Metropolis-Hastings algorithm with proposals produced by a kinetic or underdamped Langevin dynamics. This algorithm has excellent numerical behavior despite the singular interaction, in particular when the number of particles gets large. It is more efficient than the well known overdamped version previously used for such problems, and allows new numerical explorations. It suggests for instance to conjecture a universality of the Gumbel fluctuation at the edge of beta Ginibre ensembles for all beta.
Additional file 2 of Day-to-day pattern of work and leisure time physical behaviours: are low socioeconomic status adults couch potatoes or work warriors?
Creators: name: Rasmussen, Charlotte Lund
name: Dumuid, Dorothea
name: Hron, Karel
name: Gupta, Nidhi
name: Jørgensen, Marie Birk
name: Nabe-Nielsen, Kirsten
name: Holtermann, Andreas
Publisher: name: figshare
Year: 2021
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 2. Association between day-to-day leisure time physical behaviours, weekday and relative sedentary work time. Results on the association between day-to-day relative work time spent sedentary and leisure time physical behaviours.
Slant Submanifolds of a Conformal (k, μ)-Contact Manifold
Creators: name: M.S. Siddesha
name: C.S. Bagewadi
Publisher: name: figshare
Year: 2018
Subjects: subject: 10104 Combinatorics and Discrete Mathematics (excl. Physical Combinatorics)
subject: FOS: Mathematics

description: In this paper, we study the geometry of slant submanifolds of conformal (k, μ)-contact manifold when the tensor field Q is parallel. Further, we give a necessary and sufficient condition for a 3-dimensional slant submanifold of a 5-dimensional conformal (k, μ)-contact manifold to be a proper slant submanifold.
Elucidating Legionella pneumophila effector function using proteomic approaches
Creators: name: So, Ernest
Publisher: name: Imperial College London
Year: 2016

description: Legionella pneumophila is the causative agent of Legionnaires’ disease, a severe and potentially fatal pneumonia. This intracellular pathogen proliferates by creating a replicative niche, the Legionella containing vacuole (LCV), inside the host and subverting host signalling pathways. Critical to L. pneumophila’s virulence strategy is its defect in organelle trafficking/intracellular multiplication (Dot/Icm) type IVB secretion system. Using the Dot/Icm, L. pneumophila translocates over 300 effector proteins into the host cell to manipulate signalling pathways. The novel effector LtpG localises to the nucleus upon Dot/Icm-dependent translocation. Genomic deletion of ltpG did not exhibit a L. pneumophila intracellular growth defect in all infection models tested. Although LtpG expression did not cause toxicity in mammalian cells, its filamentation induced by cAMP (Fic) domain caused cytotoxicity in yeast and has auto-AMPylation activity. However, small molecule substrate binding assays suggest a guanosine-containing metabolite is preferred. Determination of LtpG host targets using in vitro protein-protein interaction assays did not yield satisfactory results and consequently a more physiologically relevant infection-based mass spectrometric method was developed. Using the biotin ligase BirA, tagged-effectors were biotinylated in a translocation dependent manner. Effector-host protein complexes formed during infection were subsequently isolated and their composition deciphered using quantitative mass spectrometry. The method was downscaled by over 100-fold from the proof-of-concept study and critical parameters such as number of purifications, lysis conditions and crosslinker reactivity tested. This revealed the infection dependent Rab GTPase binding profiles of the promiscuous Rab binding effectors SidM and LidA. Additionally, HSP90, EEF2 and NACA were identified as high confidence physiological binding partners of LtpG, suggesting a role in manipulation of host translation and autophagic pathways as part of L. pneumophila’s virulence strategy.
Additional file 3 of Day-to-day pattern of work and leisure time physical behaviours: are low socioeconomic status adults couch potatoes or work warriors?
Creators: name: Rasmussen, Charlotte Lund
name: Dumuid, Dorothea
name: Hron, Karel
name: Gupta, Nidhi
name: Jørgensen, Marie Birk
name: Nabe-Nielsen, Kirsten
name: Holtermann, Andreas
Publisher: name: figshare
Year: 2021
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 3. Sensitivity analyses. Results of sensitivity analyses in which only workers with at least two days of measurements were included.
Exploring the relationship between loss of CFTR protein function and markers of disease severity in chronic suppurative lung disease
Creators: name: Harman, Katharine
Publisher: name: Imperial College London
Year: 2016

description: Cystic fibrosis (CF) and Primary Ciliary Dyskinesia (PCD) are chronic suppurative lung diseases (CSLD). CF is characterised by inherited mutations affecting the cystic fibrosis transmembrane regulator (CFTR) protein, which is thought to be normal in PCD, however the role of CFTR in disease is incompletely understood. This thesis investigates the relationship between CFTR, inflammation and airway health, firstly in the context of the CF gene therapy Multidose trial followed by contrasting CF, PCD and control patients. The first study explored the relationship between lower airway potential difference (LAPD) measurements performed in the Multidose trial as a measure of CFTR function, and physiological, radiographic and inflammatory markers of disease severity. At baseline, FEV1 correlated with basal LAPD measurements, however not between restored chloride secretion and change in airway disease following treatment; implicating the role of sodium transport, not chloride in disease pathogenesis. As no direct correlation was seen, I went on to explore an alternative theory that a bi-directional relationship exists between CFTR and inflammation; CFTR dysfunction triggers a hyper-inflammatory state and inflammation causes secondary CFTR dysfunction. Cell cultures were cultivated from the nasal epithelium of patients with CF, PCD and controls. Both at baseline and following stimulation with common respiratory pathogens, the levels of inflammatory mediators in the supernatant from each group of cells were comparable. The numbers involved with this study were small, however did not indicate that CF cells cultured in these conditions (in vitro) were hyper-inflammatory. The final study explored in vivo whether inflammation causes secondary CFTR dysfunction. Nasal potential difference (NPD) measurements were compared with localised levels of inflammation in subjects with CF, PCD and controls. PCD traces showed reduced chloride secretion, however it was not possible to differentiate secondary CFTR dysfunction from damage to epithelial cell integrity. Elevated levels of inflammatory mediators were detected in PCD nasal fluid, however the results were variable and these levels did not correlate with NPD measurements of ion channel function. These studies did not support the hypothesis that there is a direct relationship between CFTR function and airway disease, that in vitro CF cells are hyperinflammatory, or in vivo that inflammation leads to secondary CFTR dysfunction. The experiments performed in this thesis provide a basis for future work exploring this relationship, and may help guide future trials for novel therapies in CF.