cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-LTE Models and Theoretical Spectra of Accretion Disks in Active Galactic Nuclei II. Vertical Structure of the Disk
Creators: name: Hubeny, I.
name: Hubeny, V.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have calculated several representative models of vertical structure of an accretion disk around a supermassive Kerr black hole. The interaction of radiation and matter is treated self-consistently, taking into account departures from LTE for calculating both the disk structure and the radiation field. The structural equations are described in detail, and various approximations are discussed. We have demonstrated that departures from LTE are very important for determining the disk structure, even at the midplane, as well as the emergent radiation, particularly for hot and electron--scattering-- dominated disks. We have shown that at least for the disk parameters studied in this paper, NLTE effects tend to reduce the value of the Lyman jump with respect to the LTE predictions, regardless whether LTE predicts an emission or absorption jump. We have studied the effects of various values of viscosity on the model structure and predicted spectral energy distribution. The viscosity is parameterized through a parameter $α_0$ which describes the vertically-averaged viscous stress, two power-law exponents $ζ_0$ and $ζ_1$, and the division point $m_{d}$ between these two forms. The disk structure and emergent radiation is sensitive mainly to the values of $α_0$, while the other parameters influence the disk structure to a much lesser extent. However, although the detailed shape of the predicted spectrum is sensitive to adopted value of $α_0$, the overall appearance of the spectrum is quite similar.
description: 51 pages, 13 figures
Strombus dentatus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Strombidae
Strombus
Strombus dentatus

description: Strombus dentatus [spec. nov.]
S. testa labro attenuato brevi dentato, ventre spiraque plicatis.
Habitat ..
Strombi Juniores testae carent omni labro & turbinatae existunt, quas ad distincta genera perperam retulere Authores.
* * * * Turriti spira longissima.
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 pages 745-746, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
The South African heterotopia: Whiteness and the postcolonial struggle for recognition beyond Apartheid
Creators: name: CHARLES MATHURIN VILLET
Publisher: name: Monash University
Year: 2019
Subjects: subject: 160609 Political Theory and Political Philosophy
subject: FOS: Political science

description: This thesis looks at the politics of recognition in post-Apartheid South Africa with specific reference to whiteness and affluence. The study proposes a white politics of acknowledgment with the aim to form a philosophical interpretation and critique of the life-world of suburban whiteness. The main hypothesis is that South Africa is a postcolonial heterotopia due to the continued proliferation of economic Apartheid. The study charts the way in which the dialectic of colonial times and Apartheid has become a postcolonial heterotopia after Apartheid. A postcolonial theory of recognition is outlined to show how mutual recognition is problematised beyond Apartheid.
X-Ray Emission Line Ratios and Multiphase Gas in Elliptical Galaxies and Galaxy Clusters
Creators: name: Buote, David A.
name: Canizares, Claude R.
name: Fabian, A. C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the K shell emission lines produced by isothermal and simple multiphase models of the hot gas in elliptical galaxies and galaxy clusters to determine the most effective means for constraining the width of the differential emission measure (xi(T)) in these systems which we characterize by a dimensionless parameter, sigma_xi. Comparison of line ratios of two-temperature (sigma_xi << 1) and cooling flow (sigma_xi ~1) models is presented in detail. We find that a two-temperature model can approximate very accurately a cooling flow spectrum over 0.5-10 keV. We have re-analyzed the ASCA spectra of three of the brightest galaxy clusters to assess the evidence for multiphase gas in their cores: M87 (Virgo), the Centaurus cluster, and the Perseus cluster. K-alpha emission line blends of Si, S, Ar, Ca, and Fe are detected in each system as is significant Fe K-beta emission. The Fe K-beta/K-alpha ratios are consistent with optically thin plasma models and do not suggest resonance scattering in these systems. Consideration of both the ratios of H-like to He-like K-alpha lines and the local continuum temperatures clearly rules out isothermal gas in each case. To obtain more detailed constraints we fitted plasma models over 1.6-9 keV where the emission is dominated by these K shell lines and by continuum. In each case the ASCA spectra cannot determine whether the gas emits at only two temperatures or over a continuous range of temperatures as expected for a cooling flow. The metal abundances are near solar for all of the multiphase models. We discuss the implications of these results and examine the prospects for determining the temperature structure in these systems with upcoming X-ray missions.
description: 30 pages (18 figures), To Appear in MNRAS. Major revision of the initially posted version: (1) The section on ASCA data of ellipticals was expanded and moved to astro-ph/9811080; (2) The ASCA data of M87, Centaurus, and Perseus have been re-analyzed. We find evidence for Fe K-beta emission in these systems, but the Fe K-beta/K-alpha ratios do not suggest resonance scattering; (3) The metal abundances of the cores of these systems are consistent with the meteoritic solar values
Reminiscences of Dwight Clark 1988
Publisher: name: Columbia University
Year: 2020
Subjects: Deans (Education)
Students--political activists
Civil rights demonstrations

description: Dean of first-year student undergraduate men, Stanford University, 1961-1965; Stanford fraternity, eating-club system; recollections of Allard K. Lowenstein as assistant dean of first-year student undergraduate men, Stanford University, early 1960's: personality, ability to attract diverse students, interest in "rivalling" fraternity, eating-club system, impact on political atmosphere of Stanford campus, interest in civil rights, South African issues, working habits, student recruiting methods, opposition from certain faculty members, reasons for departure from Stanford campus
Reminiscences of Dwight D. Eisenhower 1967
Publisher: name: Columbia University
Year: 2020
Subjects: Presidents--United States

description: President of Columbia University, 1948-1952; President of the United States, 1953-1961; labor unions and leaders; state versus federal controls; China; Cuba; Vietnam; Suez Canal; Open Skies policy; inflation; impressions of General George C. Marshall, Robert A. Taft, Harry Truman, Richard Nixon
VOLT 1 cruise,Thalia R/V
Creators: name: SIMPLET Laure
Publisher: name: Sismer
Year: 2015

description: Le projet VOLT visait à instrumenter le canyon de Capbreton en divers lieux, de manière à mesurer les courants et qualifier l'activité turbiditique en intensité et fréquence. La collaboration avec RTE a comme finalité de fournir des éléments améliorant la perception de l'activité turbiditique dans le canyon pour une évaluation des conséquences potentielles de cette activité naturelle pour le projet d'ouvrage sous-marinde RTE, à savoir, la pose d'un câble sous-marin de haute-tension reliant les côtes nord espagnoles aux côtes occidentales françaises.Plus spécifiquement, la campagne visait à mieux appréhender les sources d'alimentation du canyon en lien avec des évènements turbiditiques. Une cartographie de la morphologie de la tête du canyon de Capbreton a ainsi été réalisée et devrait être reconduite lors de prochains levés afin de réaliser des mesures de différentiels bathymétriques, entre levés successifs, permettant ainsi de mettre en évidence des évolutions morphologiques (zones en accrétion ou érosion et volumes associés).
Protecting the Stability of the EW Vacuum from Planck-Scale Gravitational Effects
Creators: name: Branchina, Vincenzo
name: Contino, Filippo
name: Pilaftsis, Apostolos
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the stability of the Standard-Model Electroweak (EW) vacuum in the presence of Planck-scale suppressed operators of the type $ϕ^{2n}/M^{2n-4}_{\rm P}$ that involve the Higgs field $ϕ$ and could in principle be induced by quantum gravity effects. We show how minimal embeddings of the Standard Model (SM) in supergravity (SUGRA) can stabilize the EW vacuum against such operators up to very high values of the induced supersymmetry breaking scale $M_{\cal S}$, which may well be above the onset of the so-called SM metastability scale of $10^{11}$ GeV. In particular, we explicitly demonstrate how discrete $R$ symmetries could be invoked to suppress the occurrence of harmful Planck-scale operators of the form $ϕ^{2n}/M^{2n-4}_{\rm P}$ to arbitrary higher powers of $n$. We analyze different scenarios of Planck-scale gravitational physics and derive lower limits on the power $n$ that is required in order to protect our EW vacuum from dangerous rapid decay. The significance of our results for theories of low-scale quantum gravity is illustrated.
description: 16 pages, 5 Figures, clarifications regarding the consistency of the EFT models with Swampland criteria added. To appear in Physical Review D. In memory of our esteemed colleague and friend, Maria Krawczyk
VOLT 1 RECUP LEG1 cruise,Thalia R/V
Creators: name: SILVA JACINTO Ricardo
Publisher: name: Sismer
Year: 2016

description: Relevé bathymétrique dans le canyon de Capbreton (tête et méandres 300 m). Carottage d'interface (6 cibles). Récupération de mouillages mis à l'eau lors de la campagne Gitan (Août 2015, Pourquoi Pas?).
Reminiscences of E. Frederic Morrow 1968
Publisher: name: Columbia University
Year: 2020
Subjects: Government executives
African Americans--Civil rights

description: Eisenhower campaign train, 1952; administrative officer, Special Projects, 1955-61; Eisenhower and civil rights; impressions of Sherman Adams, Martin Luther King, Jr., and others; field secretary, National Association for the Advancement of Colored People; Columbia Broadcasting System; staff advisor on race relations to Eisenhower administration
Reconfigurable computing for large-scale graph traversal algorithms
Creators: name: Betkaoui, Brahim
Publisher: name: Imperial College London
Year: 2013

description: This thesis proposes a reconfigurable computing approach for supporting parallel processing in large-scale graph traversal algorithms. Our approach is based on a reconfigurable hardware architecture which exploits the capabilities of both FPGAs (Field-Programmable Gate Arrays) and a multi-bank parallel memory subsystem. The proposed methodology to accelerate graph traversal algorithms has been applied to three case studies, revealing that application-specific hardware customisations can benefit performance. A summary of our four contributions is as follows. First, a reconfigurable computing approach to accelerate large-scale graph traversal algorithms. We propose a reconfigurable hardware architecture which decouples computation and communication while keeping multiple memory requests in flight at any given time, taking advantage of the high bandwidth of multi-bank memory subsystems. Second, a demonstration of the effectiveness of our approach through two case studies: the breadth-first search algorithm, and a graphlet counting algorithm from bioinformatics. Both case studies involve graph traversal, but each of them adopts a different graph data representation. Third, a method for using on-chip memory resources in FPGAs to reduce off-chip memory accesses for accelerating graph traversal algorithms, through a case-study of the All-Pairs Shortest-Paths algorithm. This case study has been applied to process human brain network data. Fourth, an evaluation of an approach based on instruction-set extension for FPGA design against many-core GPUs (Graphics Processing Units), based on a set of benchmarks with different memory access characteristics. It is shown that while GPUs excel at streaming applications, the proposed approach can outperform GPUs in applications with poor locality characteristics, such as graph traversal problems.
VOLT 2 cruise,Thalassa R/V
Creators: name: SILVA JACINTO Ricardo
Publisher: name: Sismer
Year: 2016

description: Levé bathymétrique haute résolution (AUV) dans un méandre du canyon de Capbreton (1300 à 1400 m). Carottage d'interface (6 cibles) le long du canyon de Capbreton. Récupération d'un mouillage (Campagne Gitan, août 2015, n/o Pourquoi Pas?). Déploiement de 3 mouillages (courants, pièges à particules) dans le canyon de Capbreton.
The stellar population and initial mass function of NGC 1399 with MUSE
Creators: name: Vaughan, Sam P.
name: Davies, Roger L.
name: Zieleniewski, Simon
name: Houghton, Ryan C. W.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present spatially resolved measurements of the stellar initial mass function (IMF) in NGC 1399, the largest elliptical galaxy in the Fornax Cluster. Using data from the Multi Unit Spectroscopic Explorer (MUSE) and updated state-of-the-art stellar population synthesis models from Conroy et. al 2018, we use full spectral fitting to measure the low-mass IMF, as well as a number of individual elemental abundances, as a function of radius in this object. We find that the IMF in NGC 1399 is heavier than the Milky Way in its centre and remains radially constant at a super-salpeter slope out to 0.7 R$_{e}$. At radii larger than this, the IMF slope decreases to become marginally consistent with a Milky Way IMF just beyond R$_{e}$. The inferred central V-band M/L ratio is in excellent agreement with the previously reported dynamical M/L measurement from Houghton et. al 2006. The measured radial form of the M/L ratio may be evidence for a two-phase formation in this object, with the central regions forming differently to the outskirts. We also report measurements of a spatially resolved filament of ionised gas extending 4 arcseconds (404 pc at $D_{\mathrm{L}}=21.1$ Mpc) from the centre of NGC 1399, with very narrow equivalent width and low velocity dispersion ($65\pm14$ \kms). The location of the emission, combined with an analysis of the emission line ratios, leads us to conclude that NGC 1399's AGN is the source of ionising radiation.
description: 16 pages, 11 figures. Accepted for publication in MNRAS (2018MNRAS.479.2443V). Minor updates after proofing
The Role of galaxy mergers in the evolution of massive galaxies
Creators: name: Carpineti, Alfredo
Publisher: name: Imperial College London
Year: 2014

description: This Thesis presents a study of the nature of the different stages of galaxy mergers that lead to the formation of massive galaxies. In particular we look into the properties of infrared bright mergers, spheroidal post-mergers and star-forming early-types and how their properties compare and contrast with the properties of regular late and early-type galaxies. The aim of this thesis is to expand our knowledge of the merging process and to find a justification for the variability of the more active early-type galaxies. These studies were performed by extracting all the possible information from different surveys. For the optical analysis we used the Sloan Digital Sky Survey (SDSS), while we used surveys conducted by IRAS and GALEX for infrared and ultraviolet data respectively. To better understand the mergers/massive galaxies connection we performed the first detailed analysis of spheroidal post-mergers, as well as the first infrared- blind study of the properties of merging galaxies and produced a multi-wavelength catalogue of local star-forming early-type galaxies. We also looked at the more general galaxy population by constructing the largest morphological survey of far- infrared selected objects, which provided us with the first estimate of how different morphologies (but mergers in particular) contribute to the local SF budget. The results show the pivotal role played by mergers in the formation of stars and evolution of galaxies in the local Universe.
Renormalization of Wilson-line operators in the presence of nonzero quark masses
Creators: name: Spanoudes, G.
name: Panagopoulos, H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: In this paper, we examine the effect of nonzero quark masses on the renormalization of gauge-invariant nonlocal quark bilinear operators, including a finite-length Wilson line (called Wilson-line operators). These operators are relevant to the definition of parton quasi-distribution functions, the calculation on the lattice of which allows the direct nonperturbative study of the corresponding physical parton distribution functions. We present our perturbative calculations of the bare Green's functions, the renormalization factors in RI' and MSbar schemes, as well as the conversion factors of these operators between the two renormalization schemes. Our computations have been performed in dimensional regularization at one-loop level, using massive quarks. The conversion factors can be used to convert the corresponding lattice nonperturbative results to the MSbar scheme, which is the most widely used renormalization scheme for the analysis of experimental data in high-energy physics. Also, our study is relevant for disentangling the additional operator mixing which occurs in the presence of nonzero quark masses, both on the lattice and in dimensional regularization.
description: 30 pages, 4 figures. Additional comments and clarifications. Version accepted for publication in Physical Review D
A study of neutrino interactions in argon gas
Creators: name: Hamilton, Philip
Publisher: name: Imperial College London
Year: 2015

description: The T2K (Tokai to Kamioka) experiment uses an intense off-axis muon neutrino beam to study neutrino oscillations through muon neutrino disappearance and electron neutrino appearance. As T2K and other neutrino oscillation experiments move beyond the regime in which they are statistically limited, uncertainties on neutrino-nucleus cross-sections have become increasingly significant as a limiting factor on the precision of these experiments, and on the next generation of detectors. Reducing these uncertainties requires a better understanding of neutrino-nucleus interactions through empirical study. This thesis describes the first ever measurement of neutrino-nucleus interactions on a gaseous target, using the intense T2K beam and the three gaseous argon time-projection chambers in the T2K near detector, ND280. I identify 63 neutrino interaction candidates, and make a comparison of the charged-current muon neutrino differential cross-section with respect to proton multiplicity between data and the simulation packages NEUT and GENIE. This thesis also describes the methods developed to select the gas interactions data sample, which by virtue of the detailed reconstruction available in the ND280 TPCs offers further opportunities to test the predictions of nuclear models than those that are covered by this thesis. Future generations of this analysis are expected to expand both the size of the sample and the range of variables tested.
VOLT 2 RECUP cruise,Thalassa R/V
Creators: name: SILVA JACINTO Ricardo
Publisher: name: Sismer
Year: 2017

description: La présente campagne participe à une étude d'observation et de quantification des événements turbiditiques dans le canyon de Capbreton visant l'évaluation des conséquences potentielles de ces événements pour le passage d'un câble électrique de haute tension à travers ce canyon, et plus spécifiquement la zone potentielle de passage identifiée par RTE, partenaire de ce projet. Cette campagne constitue de facto la prolongation et la suite de l'étude VOLT et des campagnes associées. Elle vise la récupération de 3 mouillages Aniitra déployés dans le canyon lors de la campagne VOLT 2 en juillet 2016 (http://dx.doi.org/10.17600/16006800).
Minimum-Uncertainty Angular Wave Packets and Quantized Mean Values
Creators: name: Kostelecky, Alan
name: Tudose, Bogdan
Publisher: name: arXiv
Year: 1995
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Uncertainty relations between a bounded coordinate operator and a conjugate momentum operator frequently appear in quantum mechanics. We prove that physically reasonable minimum-uncertainty solutions to such relations have quantized expectation values of the conjugate momentum. This implies, for example, that the mean angular momentum is quantized for any minimum-uncertainty state obtained from any uncertainty relation involving the angular-momentum operator and a conjugate coordinate. Experiments specifically seeking to create minimum-uncertainty states localized in angular coordinates therefore must produce packets with integer angular momentum.
description: accepted for publication in Physical Review A
Murex Linnaeus, 1758, gen. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Muricidae
Murex

description: Murex [gen. nov.]
Animal Limax.
Testa univalvis, spiralis, exasperata suturis membranaceis.
Apertura desinens in canalem integrum rectum s. subadscendentem.
*? * Spinosi cauda exserta.
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 746, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
MOESM4 of Transcriptome sequencing of Saccharina japonica sporophytes during whole developmental periods reveals regulatory networks underlying alginate and mannitol biosynthesis
Creators: name: Shao, Zhanru
name: Zhang, Pengyan
name: Lu, Chang
name: Li, Shaoxuan
name: Chen, Zhihang
name: Wang, Xiuliang
name: Duan, Delin
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 4: Figure S3. Overview of expression profiles of genes with developmental stages (a) and along the frond (b).
Application of the functional renormalization group to Bose gases: from linear to hydrodynamic fluctuations
Creators: name: Isaule, Felipe
name: Birse, Michael C.
name: Walet, Niels R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study weakly interacting Bose gases using the functional renormalization group with a hydrodynamic effective action. We use a scale-dependent parametrization of the boson fields that interpolates between a Cartesian representation at high momenta and an amplitude-phase one for low momenta. We apply this to Bose gases in two and three dimensions near the superfluid phase transition where they can be described by statistical O(2) models. We are able to give consistent physical descriptions of the infrared regime in both two and three dimensions. In particular, and in contrast to previous studies using the functional renormalization group, we find a stable superfluid phase at finite temperatures in two dimensions. We compare our results for the superfluid and boson densities with Monte-Carlo simulations, and we find they are in reasonable agreement.
description: 21 pages, 10 figures, to appear in Phys. Rev. B
Reminiscences of Earl Browder, 1964
Publisher: name: Columbia University
Year: 2021
Subjects: Communism
Communism--United States
Labor unions--United States
Political parties--United States
Labor unions and communism
Popular fronts
World War, 1939-1945

description: Childhood in Kansas; Populist Party; social and economic characteristics of Kansas; socialism; Office Workers Union, American Federation of Labor, union activities, 1914; World War I; anti-war group; Tom Mooney; Russian Revolution, 1917; Communist Party, 1919; Industrial Workers of the World vs. American Federation of Labor; International Trade Union Congress, Russia, 1921; 3rd Congress Communist International; La Follette movement; Chinese Revolution, 1927; Pan-Pacific Trade Union Secretariat, 1928; Communist magazines; development of Congress of Industrial Organizations, 1930s; Scottsboro case; Negro rights; 1936 presidential campaign; leftist organizations, 1930s; United Front and 7th Congress Communist International, 1935; Spanish Civil War and International Brigade; Stalin-Hitler Pact, 1939; World War II; postwar changes in Communist Party; discussion of ideology; impressions of Communist leaders
Murex haustellum Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Muricidae
Murex
Murex haustellum

description: Murex haustellum [spec. nov.]
M. testa ovata tuberculata, cauda elongata subulata recta muricata.
Bonan. recr. 3. t. 268.
Rumph. mus. t. 26. f. F.
Gualt. test. t. 30. f. E.
Argenv. conch. t. 19. f. B.
Klein. ostr. t. 4. f. 81.
Habitat in O. Asiae.
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 746, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
VOLVAN cruise,Alis R/V
Creators: name: MONZIER Michel
Publisher: name: Sismer
Year: 1992

description: Echantillonnage de côtes difficilement accessibles autrement que par la mer sur les iles d'Aboa, de Santa Maria et d'Epi. Etude détaillée de la caldera de Santa Maria et des dépôts lies a sa formation. Etude des prolongements sous-marins d'Aboa et de Santa Maria. Echantillonnage par dragage des prolongements sous-marins de ces iles. Compléments bathymétriques et d'échantillonnage sur lacaldera de Kuwae déjà reconnue pendant la campagne CALIS. Compléments bathymétriques et d'échantillonnage sur le grand glissement de terrain situe à l'est de l'ile d'Ambrym. Positionner précisément ces iles au moyen d'un récepteur GPS. Réaliser des prélèvements de gaz en vue d'une étude des gaz rares. Campagne rattachée au projet ORSTOM : Vulcanologie des volcans Actifs de l'Arc des Nouvelles Hébrides. Etudes terrestre et marine.
Lettre de Etienne Piestre à Jean-François Séguier, 1778-10-23
Creators: name: Piestre, Etienne
name: Piestre, Etienne
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Librairie

description: [transcription] Nîmes M. Séguier Lyon le 23e octobre 1778.

[Le 16e novembre 1778, j'ai reçu les livres et j'ai mandé à M. Piestre une lettre de change de 57 lt. tirée sur MM. Devillas pour solde de ladite société.]

Monsieur,

Nous avons remis ces jours-ci à Messieurs Devillas un paquet à votre adresse qu'ils vont mettre dans un envoi pour votre ville. Il contient ce qui suit.

1 Passerii Picturae Etrusco., tomus 3e fol. fig. 43 lt.

1 Athenae Rauricae 8° 3 lt. 10 s.

1 Ouvrage de M. Swinden sur les thermomètres et le froid de 1776 8° 2 vol. brochés. 10 lt. 10 s.

57 lt.

Le tout monte à cinquante-sept livres que vous aurez la complaisance de nous faire toucher à votre commodité.

M. Fornier est bien encore ici, mais Messieurs Devillas nous ont dit en nous en informant que nous n'avions qu'à leur remettre le paquet. c'est ce que nous avons fait. Ce Monsieur ne part que dans 3 semaines. Nous avons prié notre maison de Genève de vous procurer par sa correspondance en Allemagne un exemplaire de l'histoiredes poissons minéraux * en Allemaagne par M. Gmelin. A sa réception nous aurons l'honneur de vous en avertir, afin que si vous avez quelque chose à y faire joindre, vous puissiez le faire. Nous vous en ferons même savoir la nouvelle de l'acquisition dès que nous la saurons pour votre tranquilité. Nous vous avons expédié par la messagerie de la semaine dernière un paquet que nous avait remis M. de La Tourette qui nous dit que cela pressait fort. c'est pourquoi nous vous l'avons envoyé par ladite voie. Nous espérons qu'il vous sera parvenu. Nous avons l'honneur d'être avec considération,

Monsieur,

Votre très humble et très obéissant serviteur

Pour les frères de Tournes

Piestre

* P.S. Nous voyons que vous ne voulez d'abord que le prix de ce livre. Nous le demanderons
description: [personnes citées] Barthelémy Fornier de Clausonne, Marc Antoine Louis Claret (de Fleurieu) de La Tourette, Messieurs (Négociants à Lyon et à Nîmes) Devillas
description: [reférence bibliographique citée] Herzog, Johann Wernhard, Athenae Rauricae, sive catalogus professorum academiae Basiliensis ab a. MCCCCLX ad a. MDCCLXXVII : cum brevi singulorum biographia. Adiecta est recensio omnium eiusdem. Passeri, Pietro-Maria, Picturae Etruscorum in Vasculis nunc primutn collectae et Dissertationibus illustratae, Rome, 1767-1775, 3 vol.
.
Van Swinden, Johan Hendrick, Dissertation sur la comparaison des thermomètres, Amsterdam, Rey, 1778.
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 312_9, fol. 104
description: Source: ark:/12148/btv1b10015930b
Multiscale theory and simulation of barium titanate
Creators: name: Fallon, Joseph John
Publisher: name: Imperial College London
Year: 2014

description: Although barium titanate is one of the most widely studied ferroelectric materials, questions about the nature of its phase transition remain. There are two competing models for this transition (displacive and order–disorder) and experiments detect signs of both types of transition. To study this issue computationally requires the simulation of large, disordered systems on the atomic scale. In this PhD I have developed a new classical force field for BaTiO3 which, in essence, is an ionic model. The free parameters within this force field were fitted to data generated from density-functional theory (DFT) simulations. Properties that were not used in the fitting procedure calculated with the resulting force field were found to be in excellent agreement with those calculated via DFT. The potential energy surface of BaTiO3 has been explored in detail using DFT and the force field, enabling both sublattice and single ion displacements to be studied, and highlighting in particular the important role played by the oxygen ions. Dynamical simulations show behaviour compatible both with experiments that have been interpreted as evidence for displacive transitions and with experiments interpreted as evidence for order–disorder transitions. In particular, when the local structure of the phases was studied, the locations of the ions were found to be consistent with a displacive model, whereas the calculated distribution of polarisation densities was more characteristic of an order– disorder model. The direction of the local relative displacements of titanium and oxygen ions was also considered. The deviation of this displacement from the ⟨111⟩ directions produced excellent agreement with experimental measurements of the tetragonal phase, and a similar effect was found in the orthorhombic phase. These dynamical simulations were found to be very sensitive to a range of factors such as supercell size.
The Roles of Anger and Self-Regulation on School Readiness in Kindergarten
Creators: name: Callan, Sabrina
Publisher: name: Digital Repository at the University of Maryland
Year: 2020
Subjects: subject: Educational psychology
subject: anger
subject: early childhood
subject: effortful control
subject: executive functioning
subject: school readiness
subject: self-regulation

description: Young children who are anger-prone or have poor self-regulation skills tend to have difficulties in school (Diaz et al., 2017; Liu et al., 2018; Valiente et al., 2012). However, few studies have explored how anger may work together with different self-regulatory tendencies to predict children’s school readiness. This study examined the relations of anger, effortful control, executive functioning, and school readiness among kindergarteners (n = 72). Executive functioning skills were found to be particularly important for academic readiness, whereas anger and effortful control were found to be particularly important and to work together to predict social-emotional readiness. These findings provide evidence for the conceptual distinctions between executive functioning and effortful control as two distinct types of self-regulation, and demonstrate the need for tailored approaches to social-emotional learning (SEL). Future SEL programs would benefit from approaches that take children’s pre-existing tendencies for anger and self-regulation into account in anger management training.
Chemical composition and antibacterial activity of Tussilago farfara (L.) essential oil from Quebec, Canada
Creators: name: Marie-Anne Boucher
name: Côté, Héloïse
name: Pichette, André
name: Ripoll, Lionel
name: Legault, Jean
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: The chemical composition of Tussilago farfara L. essential oil from the Saguenay-Lac-St-Jean region of Quebec, Canada was analyzed by gas chromatography–flame ionisation detector (GC-FID) and gas chromatography–mass spectrometry (GC-MS), and the antibacterial activity of the oil was tested against Escherichia coli and Staphylococcus aureus. Forty-five (45) compounds were identified from the GC profile. The main components were 1-nonene (40.1%), α-phellandrene (26.0%) and ρ-cymene (6.6%). The essential oil demonstrated antibacterial activity against E. coli (MIC50 = 468 µg·mL−1; MIC90 = 6869 µg·mL−1) and S. aureus (MIC50 = 368 µg·mL−1; MIC90 = 773 µg·mL−1). Dodecanoic acid was found to be active against both bacteria having a MIC50 and MIC90 of 16.4 µg·mL−1 and 95 µg·mL−1, respectively for E. coli and a MIC50 and MIC90 of 9.8 µg·mL−1 and 27.3 µg·mL−1, respectively for S. aureus. In addition, 1-decene and (E)-cyclodecene were also found to be active against E. coli.
Can Nonlinear Structure Form at the Era of Decoupling?
Creators: name: Shaviv, Nir J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The effects that large scale fluctuations had on small scale isothermal modes at the epoch of recombination are analysed. We find that: (a) Albeit the fact that primordial fluctuations were at this epoch still well in the linear regime, a significant nonlinear radiation hydrodynamic interaction could have taken place. (b) Short wavelength isothermal fluctuations are unstable. Their growth rate is exponential in the amplitude of the large scale fluctuations and is therefore very sensitive to the initial conditions. (c) The observed CMBR fluctuations are of order the limit above which the effect should be significant. Thus, according to their exact value, the effect may be negligible or lead to structure formation out of isothermal fluctuations within the period of recombination. (d) If the cosmological parameters are within the prescribed regime, the effect should be detectable through induced deviations in the Planck spectrum. (e) The sensitivity of the effect to the initial conditions provides a tool to set limits on various cosmological parameters with emphasis on the type and amplitude of the primordial fluctuation spectrum. (f) Under proper conditions, the effect may be responsible for the formation of sub-globular cluster sized objects at particularly high red shifts. (g) Under certain circumstances, it can also affect horizon sized large scale structure.
description: To appear in MNRAS, 17 pages, 8 figures
Reminiscences of Earl James McGrath, 1963
Publisher: name: Columbia University
Year: 2021
Subjects: Government executives--United States
Educators
Education and state
College teachers--Training of
Military education

description: Childhood and education; teaching and administration, University of Buffalo, 1928-1945; War Manpower Commission, 1942; education program for naval personnel; trimester college program; teacher quality and qualifications; United States Commissioner of Education, 1949-1953
Synthetic chemicals used in mining operations: a proposed risk management framework
Creators: name: Singh, Khareen Alexandria
Publisher: name: Imperial College London
Year: 2013

description: There is increasing scientific and public concern about chemicals in the environment and in particular those that pose a risk to human health. As a result, there is increasing pressure for industries to reduce risks and comply with emerging chemical legislations, such as the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH). The mining industry relies heavily on the use of chemicals having a large range with a variety of hazards and exposures. Several screening and risk assessment procedures were evaluated to determine their appropriateness to the mining industry. This PhD aimed to assist the mining industry by proposing a framework that integrated hazard and exposure assessments into a numerical ranking and evaluation of individual chemicals and workspaces. This was developed by collecting and evaluating data on the hazards and exposures of chemicals across copper, platinum and coal mining operations. The hazard identification procedure showed that 9% (76 out of 850) of chemicals had ingredients that could be classified as known or suspected carcinogens, mutagens and/or reproductive toxins, laboratories on mine sites having the highest number of chemicals with severe hazardous properties (Carcinogenic, Mutagenic, Reproductive toxin (CMR) and/or fatal/and/ or very toxic to aquatic life). An exposure assessment was proposed that used onsite observations to define and tailor the exposure categories for the mining industry and to define the workspaces in terms of the exposure controls and chemical management measures. Findings demonstrated that 24% of the 850 chemicals were classified as being of potential high risk of harm, with 3% (27) prioritised for immediate management. This was validated by comparing the results with established hazard classifications. All of the workspaces investigated had insufficient safety and/or exposure controls to accommodate the hazards of the typical chemicals used. This workspace-based framework is a dynamic system that manages the chemicals in current use, but is also a wide scoping system to include measures in place for future chemicals introduced into workspaces.
Angular momenta, helicity, and other properties of dielectric-fiber and metallic-wire modes
Creators: name: Picardi, M. F.
name: Bliokh, K. Y.
name: Rodríguez-Fortuño, F. J.
name: Alpeggiani, F.
name: Nori, F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Spin and orbital angular momenta (AM) of light are well studied for free-space electromagnetic fields, even nonparaxial. One of the important applications of these concepts is the information transfer using AM modes, often via optical fibers and other guiding systems. However, the self-consistent description of the spin and orbital AM of light in optical media (including dispersive and metallic cases) was provided only recently [K.Y. Bliokh et al., Phys. Rev. Lett. 119, 073901 (2017)]. Here we present the first accurate calculations, both analytical and numerical, of the spin and orbital AM, as well as the helicity and other properties, for the full-vector eigenmodes of cylindrical dielectric and metallic (nanowire) waveguides. We find remarkable fundamental relations, such as the quantization of the canonical total AM of cylindrical guided modes in the general nonparaxial case. This quantization, as well as the noninteger values of the spin and orbital AM, are determined by the generalized geometric and dynamical phases in the mode fields. Moreover, we show that the spin AM of metallic-wire modes is determined, in the geometrical-optics approximation, by the transverse spin of surface plasmon-polaritons propagating along helical trajectories on the wire surface. Our work provides a solid platform for future studies and applications of the AM and helicity properties of guided optical and plasmonic waves.
description: 12 pages, 4 figures, to appear in Optica
Reminiscences of Ed Moulthrop 1986
Publisher: name: Columbia University
Year: 2019
Subjects: Wood-carvers
Wood-carving
Arts and crafts movement
Wood finishing

description: Childhood, Cleveland; early interest in art, propensity for carving; scholarship to Architecture School at Western Reserve University, Cleveland; national student awards for design; two year fellowship at Princeton Architecture School; teaching at Georgia Tech from 1941 to 1950, research in wood finishes; chief designer at large architectural firm for twenty years, left firm in 1972 to work completely on bowls; discussion of development of his art, selling art, atmosphere for art today.
Pressure-induced structural transformations in nanomaterials: towards high accuracy large length- and time-scale simulations
Creators: name: Corsini, Niccolo
Publisher: name: Imperial College London
Year: 2015

description: The study of pressure-induced structural transformations in nanomaterials is both of fundamental and technological importance. Accurate simulations of these transformations are challenging because large length- and time-scales have to be simulated to make contact with experiments whilst retaining the atomic detail for a faithful description. In this thesis, both classical and quantum mechanical techniques are used to model pressure-induced structural transformations in realistic Si, Ge and CdS nanocrystals and comparison made to experiment where possible. We implement an electronic enthalpy method within the linear-scaling density-functional theory ONETEP code and, after introducing an approach for calibrating the volume definition, investigate the size-dependent pressure-induced amorphisation and polyamorphic transformations in hydrogenated Si and Ge nanocrystals. For the latter, we elucidate the surface-induced amorphisation and the new high-density amorphous metallic Ge phase observed experimentally. We combine this method with the projector-augmented wave and time-dependent density-functional theory methods to study the size and ligand dependence of deformation and optoelectronic properties of CdS nanocrystals with pressure. We develop a novel classical parametrisation for the simulation of bare and ligated CdS nanocrystals immersed in a pressure-transmitting medium and investigate their transformation under pressure using classical molecular dynamics and the metadynamics method for accelerating rare events. The resulting polymorphic transformation and pressure-induced amorphisation are analysed in detail.
Good Quantum Error-Correcting Codes Exist
Creators: name: Calderbank, A. R.
name: Shor, Peter W.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A quantum error-correcting code is defined to be a unitary mapping (encoding) of k qubits (2-state quantum systems) into a subspace of the quantum state space of n qubits such that if any t of the qubits undergo arbitrary decoherence, not necessarily independently, the resulting n qubits can be used to faithfully reconstruct the original quantum state of the k encoded qubits. Quantum error-correcting codes are shown to exist with asymptotic rate k/n = 1 - 2H(2t/n) where H(p) is the binary entropy function -p log p - (1-p) log (1-p). Upper bounds on this asymptotic rate are given.
description: Latex, 23 pages, 1 figure. Revised April 1996 to give more intuition and an example. Submitted to Phys. Rev. A
Stable carbon isotopic composition of peat columns, subsoil and vegetation on natural and forestry-drained boreal peatlands
Creators: name: Nykänen, Hannu
name: Promise A. Mpamah
name: Rissanen, Antti J.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: We studied natural and forestry-drained peatlands to examine the effect of over 34 years lowered water table on the δ13C values of vegetation, bulk peat and subsoil. In the seven studied sites, δ13C in the basal peat layer was 1.1 and 1.2 ‰ lower than that of the middle-layer and surface layer, respectively. Furthermore, there was a positive correlation between the δ13C values of the basal and surface peat layers, possibly due to carbon (C) recycling within the peat column. In the same mire complex, natural fen peat δ13C values were lower than those of the nearby bog, possibly due to the dominance of vascular plants on fen and the generally larger share of recycled C in the fens than in the bogs. Furthermore, natural and 51 years previously drained fen and bog, on the opposite sides of a ditch on the same mire complex, showed no significant differences in δ13C values. Plant δ13C values were lower, while δ13C values of subsoil were higher in the drained than in the natural site of the fen.