cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Macroscopic and microscopic investigation of spin reorientation of iron tin
Creators: name: Heritage, Kevin
Publisher: name: Imperial College London
Year: 2015

description: The work reported in this thesis examines the spin reorientation transition in Fe3Sn2 using a combination of microscopic and macroscopic techniques. Macroscopic measurement of single crystal Fe3Sn2 was undertaken using a SQUID (superconducting quantum interference device) magnetometer to measure the change in magnetisation along the Kagome plane. The domain structure on the surface of the crystal was measured using magnetic force microscopy (MFM) over a range of temperatures. The combination of techniques used for measuring the bulk and microscopic properties increases the understanding of first order spin reorientation transitions. The bulk magnetisation measurement of single crystal Fe3Sn2 displayed features that are typical of a first order phase transition. The magnetisation measured along the Kagome plane on warming and cooling differed in magnitude and a first order jump in magnetisation was also observed on cooling. This highlighted the hysteretic nature of the phase transition. The hysteresis and first order jump arises from the mechanism of the spin reorientation. On cooling through the spin reorientation temperature the sample is supercooled until the low temperature phase nucleates, after the nucleation the low temperature phase grew rapidly leading to a cascade effect and a first order jump in magnetisation. No evidence of a first order jump on warming was observed and therefore no significant superheating occurred. The lack of superheating is due to remanent high temperature phase at 2 K from an incomplete phase transition. The remanent phase provided ‘seeds’ for the growth of the high temperature phase, reducing the activation energy. The variable temperature magnetic force microscopy (MFM) measurements allowed the changes in the domain structure to be examined as the crystal underwent a spin reorientation transition. The evolution of the domain structure during the phase transition allowed the mechanism of the phase transition to be observed. On cooling from the high temperature phase, a fine structure associated with the low temperature phase formed within the branches of the domains associated with the high temperature structure. The fine structure grew with further cooling as a greater portion of the sample underwent the spin reorientation transition. Evidence of a thermal hysteresis was also observed in the domain images on warming and cooling, with images at a given temperature having different domain structures. The development of a fine structure was only observed on cooling, the absence of a fine structure on warming confirms that remanent high temperature phase prevents superheating on warming. The combination of macroscopic and microscopic results has allowed the phase diagram for the spin reorientation transition to be determined and the phase coexistence region to be determined.
Quantum uncertainties in coupled harmonic oscillator
Creators: name: Bandyopadhyay, Abir
name: Rai, Jagdish
Publisher: name: arXiv
Year: 1995
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we analyze the quantum uncertainties and the photon statistics in the interaction between the two modes of radiation by treating them as coupled harmonic oscillator with the motivation of controlling quantum properties of one light beam by another. Under the rotating wave approximation (RWA) we show that if initially one of the modes is coherent and the other one squeezed, then the squeezing and non-Poissonianness of the photon statistics can transfer from one mode to the other. We give a parametric study of these properties depending upon interaction time and the degree of initial squeezing in one of the modes.
description: RevTex, 7pages preprint, figures available on request to abir@iitk.ernet.in, replaced version is same but without some LaTex corrextions
Reseda canescens Linnaeus, 1753, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1753
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Capparales
Resedaceae
Reseda
Reseda canescens

description: Reseda canescens, spec. nov.
 2. Reseda foliis subulatis sparsis. Sauv. monsp. 48.
 Reseda foliis simplicibus oblongis integris. Guett. stamp. 1. p.225.
 Reseda alba minor. Bauh. pin. 100.
 Sesamoides salmanticum parvum 2. Clus. hist. 1. p. 296. t.295.
 Habitat in Salmantica .
description: Published as part of Linnaeus, Carolus, 1753, Species plantarum: exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas, Stockholm :Laurentius Salvius on pages 448-449, DOI: 10.5281/zenodo.3931989
Exploiting nonlinearity in optical fibres and nanomaterials for short-pulse laser technology
Creators: name: Woodward, Robert
Publisher: name: Imperial College London
Year: 2015

description: The importance of short-pulse laser technology in all branches of science and engineering continues to grow, increasing demands on their performance. In this thesis, we explore approaches for advancing such technologies using optical nonlinearity in emerging nanomaterials and fibres to manipulate the spectral and temporal properties of light. Firstly, we introduce a long-cavity mode-locked fibre laser architecture for generating high-energy pulses with a giant chirp at low repetition rates. Chirped fibre Bragg gratings are developed for pulse compression (and peak-power enhancement) by a factor of a hundred and the system is shown to be an ideal pump source for low-threshold supercontinuum generation in photonic crystal fibre (PCF). Experimental work is supported by numerical simulations to reveal insight into the pulse dynamics. Two-dimensional nanomaterials, specifically few-layer transition metal dichalcogenides such as MoS2 are then considered. We report a harmonic generation microscopy technique for rapidly characterising the structure and optical properties of nanomaterial samples. These materials are then integrated into fibre lasers to act as saturable absorbers for pulse generation by Q-switching and mode-locking. We present a range of sources with pulse durations from femtoseconds to microseconds and kilohertz to megahertz repetition rates, operating throughout the near-infrared, highlighting the wide parameter space that can be accessed. We also propose a theory based on edge states to explain the wideband saturable absorption. Finally, we study stimulated Brillouin scattering in PCF with a focus on the role of acoustic dynamics. With careful choice of wavelength relative to the microstructured fibre length scales, PCFs are shown to exhibit a stronger Brillouin response than conventional fibre, which we use to develop a compact self-mode-locked Brillouin laser. We conclude that emerging nanomaterials and optical fibre designs could be leveraged to yield tangible benefits for short-pulse laser technology and we place our results in context of ongoing research.
Reminiscences of Livingston Merchant 1968
Publisher: name: Columbia University
Year: 2020
Subjects: Government executives
Diplomats
Presidents--Press conferences.--United States

description: Career in State Department; Japan Peace Treaty, Assistant Secretary for European Affairs, 1953, organization and procedures; Bermuda Conference and European Defence Community, Berlin Conference, 1954; presidential speech writers; press conferences. Impressions of President Eisenhower, Sir Winston Churchill, John Foster Dulles, Anthony Eden, Vyacheslav Molotov, and others
Additional file 16 of Genome-wide identification of PME genes, evolution and expression analyses in soybean (Glycine max L.)
Creators: name: Wang, Liang
name: Gao, Yingqi
name: Wang, Songming
name: Zhang, Qiqi
name: Yang, Shouping
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 16: Figure S1. Phylogenetic expression profiles of GmPME genes in soybean flower buds from cytoplasmic male sterile line NJCMS1A and its maintainer NJCMS1B based on the published transcriptome data. The FPKM values were row-scaled with the zero-to-one method.
VOLT
Creators: name: SILVA JACINTO Ricardo
Publisher: name: Sismer
Year: 2015

description: Le projet VOLT était une collaboration avec RTE afin 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-marin de RTE, à savoir, la pose d'un câble sous-marin de haute-tension reliant les côtes nord espagnoles aux côtes occidentales françaises. Ce projet visait notamment à instrumenter le canyon de Cap breton en divers lieux, de manière à mesurer les courants et qualifier l'activité turbiditique en intensité et fréquence.Plus spécifiquement, la campagne VOLT1 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 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).
Trans-Ejecta High-Energy Neutrino Emission from Binary Neutron Star Mergers
Creators: name: Kimura, Shigeo S.
name: Murase, Kohta
name: Bartos, Imre
name: Ioka, Kunihito
name: Heng, Ik Siong
name: Mészáros, Peter
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The observations of a macronova/kilonova accompanied by gravitational waves from a binary neutron star merger (GW170817) confirmed that neutron star coalescences produce copious ejecta. The coincident gamma-ray detection implies the existence of a relativistic jet in this system. During the jet's propagation within the ejecta, high-energy photons and neutrinos can be produced. The photons are absorbed by the ejecta, while the neutrinos escape and can be detected. Here, we estimate such trans-ejecta neutrino emission, and discuss how neutrino observations could be used to differentiate between gamma-ray burst emission scenarios. We find that neutrinos from the internal shocks inside the ejecta may be detectable by IceCube within a few years of operation, and will likely be detected with IceCube-Gen2. The neutrino signals coincident with gravitational waves would enable us to reveal the physical quantities of the choked jets even without electromagnetic signals.
description: 12 pages, 5 figures, 2 tables, accepted for publication in PRD
Reminiscences of Lloyd Carpenter Griscom, 1951
Publisher: name: Columbia University
Year: 2021
Subjects: Publishers and publishing
Diplomats--United States
Diplomacy--United States
Newspaper publishing

description: Business and political association of Clement Griscom with steamship transportation, the Pennsylvania Railroad, Theodore Roosevelt, Marcus A. Hanna, and others; diplomatic experiences, 1893-1909; New York, N.Y., politics, 1910-1911; subsequent career as newspaper proprietor
GEOBREST
Creators: name: GRAINDORGE David
Publisher: name: Sismer
Year: 2004

description: Il s'agit d'une série de campagne de l'UMR 6538 Géosciences Océan de l'IUEM de Brest. Elle concerne des missions d'une dizaine sur le N/O Côtes de la Manche. Ce stage a pour objectif un apprentissage complet de l'acquisition sismique Sparker / Boomer / Chirp sur la plate-forme continentale complétée de prélèvements par bennes, par petit carottier et d'acquisition de données de sondeur multifaisceaux petits fonds et de SONAR latéral. Cette série offre une bonne autonomie d'action pour reconnaître l'ensemble de la plate-forme continentale péri armoricaine.Le thème scientifique abordé au cours de ce stage d'enseignement est celui de l'évolution des plates-formes continentales : description structurale et morphologique, enregistrement sédimentaire. La plate-forme continentale du domaine Atlantique / Manche ainsi que d'autres en milieux tropicaux connaissent un regain d'intérêt scientifique ces dernières années. De nombreuses études sont en cours (Universités de Bordeaux, de la Rochelle, de Vannes, de Brest, de Rennes, de Caen, IFREMER) et visent principalement à étudier l'enregistrement sédimentaire quaternaire en réponse aux signaux climatiques et tectoniques. La vaste plate-forme continentale bordant le Massif armoricain ainsi que la rade de Brest offrent cette possibilité d'étude en quelques jours de mer.
Flip-chip bonding using laser induced ultrasonic vibration
Creators: name: Nordin, Mohd Hisham
Publisher: name: Imperial College London
Year: 2015

description: Current thermosonic flip chip bonding technologies are adversely affected by chip-to-substrate co-planarity errors and bump/pad height variations which can lead to uneven bonding strength and, in extreme cases, chip cratering. This has limited the industrial uptake of thermosonic flip chip assembly. The aim of the research reported here was to explore the use of laser-generated ultrasound as an alternative ultrasound source in flip chip bonding. The research was motivated by the idea that, with greater control over the distribution of ultrasonic energy applied over the bonding interface, it should be possible to compensate for and mitigate the above effects. The main objective of this research work was to establish a working flip-chip bonding process using laser induced ultrasonic vibration. Initially, a literature review on current flip-chip bonding methods and laser ultrasonic methods was carried out. This suggested that confined laser ablation would be the most appropriate technique for generating strong ultrasonic vibration. Next, through modelling and simulation, an investigation was carried out to determine the suitable parameters and methods to be implemented during the experimental stage, including the pressure pulse amplitude, cavity width (irradiance spot size) and type of sacrificial material. Additional investigations were also carried out to explore the effect of applying different materials in generating ultrasonic vibration and also to show the effect of applying multiple pressure pulses simultaneously. In the experimental phase, a custom bonding rig was developed and used to explore the parameter space for thermosonic bonding on polymer substrates using ultrasound generated by a diode-pumped solid-state laser (355 nm wavelength). Initial experiments showed unstable bond strength due to the accumulation of heat which resulted in the appearance of an unwanted glue-like substance at the bonding interface. However, this issue was overcome through careful choice of process parameters combined with the introduction of off-axis laser irradiation. A process for bonding dummy test chips to flexible substrates was successfully established, and in the best case a die shear strength of 9.3 gf/bump was achieved.
The Francisella novicida Cas12a is sensitive to the structure downstream of the terminal repeat in CRISPR arrays
Creators: name: Chunyu Liao
name: Slotkowski, Rebecca A.
name: Achmedov, Tatjana
name: Beisel, Chase L.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: The Class 2 Type V-A CRISPR effector protein Cas12a/Cpf1 has gained widespread attention in part because of the ease in achieving multiplexed genome editing, gene regulation, and DNA detection. Multiplexing derives from the ability of Cas12a alone to generate multiple guide RNAs from a transcribed CRISPR array encoding alternating conserved repeats and targeting spacers. While array design has focused on how to optimize guide-RNA sequences, little attention has been paid to sequences outside of the CRISPR array. Here, we show that a structured hairpin located immediately downstream of the 3ʹ repeat interferes with utilization of the adjacent encoded guide RNA by Francisella novicida (Fn)Cas12a. We first observed that a synthetic Rho-independent terminator immediately downstream of an array impaired DNA cleavage based on plasmid clearance in E. coli and DNA cleavage in a cell-free transcription-translation (TXTL) system. TXTL-based cleavage assays further revealed that inhibition was associated with incomplete processing of the transcribed CRISPR array and could be attributed to the stable hairpin formed by the terminator. We also found that the inhibitory effect partially extended to upstream spacers in a multi-spacer array. Finally, we found that removing the terminal repeat from the array increased the inhibitory effect, while replacing this repeat with an unprocessable terminal repeat from a native FnCas12a array restored cleavage activity directed by the adjacent encoded guide RNA. Our study thus revealed that sequences surrounding a CRISPR array can interfere with the function of a CRISPR nuclease, with implications for the design and evolution of CRISPR arrays.
Gravitational Collapse and Fragmentation in Molecular Clouds with Adaptive Mesh Refinement
Creators: name: Klein, Richard I.
name: Fisher, Robert T.
name: McKee, Christopher F.
name: Truelove, J. Kelly
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe a powerful methodology for numerical solution of 3-D self-gravitational hydrodynamics problems with extremely high resolution. Our method utilizes the technique of local adaptive mesh refinement (AMR), employing multiple grids at multiple levels of resolution. These grids are automatically and dynamically added and removed as necessary to maintain adequate resolution. This technology allows for the solution of problems in a manner that is both more efficient and more versatile than other fixed and variable resolution methods. The application of AMR to simulate the collapse and fragmentation of a molecular cloud, a key step in star formation, is discussed. Such simulations involve many orders of magnitude of variation in length scale as fragments form. In this paper we briefly describe the methodology and present an illustrative application for nonisothermal cloud collapse. We describe the numerical Jeans condition, a criterion for stability of self-gravitational hydrodynamics problems. We show the first well-resolved nonisothermal evolutionary sequence beginning with a perturbed dense molecular cloud core that leads to the formation of a binary system consisting of protostellar cores surrounded by distinct protostellar disks. The scale of the disks, of order 100 AU, is consistent with observations of gaseous disks surrounding single T-Tauri stars and debris disks surrounding systems such as $β$ Pictoris.
description: 10 pages, 6 figures (color postscript). To appear in the proceedings of Numerical Astrophysics 1998, Tokyo, March 10-13, 1998
The choice of the government green subsidy scheme: innovation subsidy vs. product subsidy
Creators: name: Li, Yina
name: Tong, Yang
name: Ye, Fei
name: Song, Jiajia
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: A critical problem that beleaguers governments in the promotion of green development is determining which approach to employ in establishing an efficient green subsidy scheme. In this study, we scrutinise the effects of three government subsidy schemes: a green non-subsidy (GNS), a green product subsidy (GPS), and a green innovation subsidy (GIS). Taking social welfare into consideration, the optimal green subsidy scheme of governments in different settings is investigated. Interestingly, we find that a green subsidy is not always a good choice for the government. When the cost of green innovation is particularly low, or when both the cost of green innovation and the variable production cost of green product are high, if the environmental improvement effectiveness yielded by green innovation is insignificant, the GNS is the best. Otherwise, both the GPS and the GIS achieve greater levels of social welfare. In addition, counter to intuition, the GPS outperforms the GIS when the cost of green innovation is sufficiently high and green innovation reduces the variable production cost of green product significantly, even if the GIS can directly help to lighten the green innovation cost load. However, from the perspective of maximising subsidy efficiency, the GIS is always better than the GPS.
Band Gaps for Atoms in Light based Waveguides
Creators: name: Hope, J. J.
name: Savage, C. M.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The energy spectrum for a system of atoms in a periodic potential can exhibit a gap in the band structure. We describe a system in which a laser is used to produce a mechanical potential for the atoms, and a standing wave light field is used to shift the atomic levels using the Autler-Townes effect, which produces a periodic potential. The band structure for atoms guided by a hollow optical fiber waveguide is calculated in three dimensions with quantised external motion. The size of the band gap is controlled by the light guided by the fiber. This variable band structure may allow the construction of devices which can cool atoms. The major limitation on this device would be the spontaneous emission losses.
description: 7 pages, four postscript figures, uses revtex.sty, available through http://online.anu.edu.au/Physics/papers/atom.html
FOCUS
Creators: name: GUTSCHER Marc-André
Publisher: name: Sismer
Year: 2020

description: Mener une surveillance long-terme de la faille Nord Alfeo (au large de Catane en Sicile), par câble de fibre optique, par un réseau de stations géodésiques fond de mer et par un réseau de sismomètres fond de mer (OBS) dans le cadre du projet ERC Advanced Grant FOCUS.L'objectif principal de la série de campagnes liée au projet ERC Advanced Grant FOCUS, (durée Oct. 2018 - Sep. 2025) est de tester l'application de la  réflectométrie laser, pour mesurer des faibles (1 - 2 cm) déplacements tectoniques suite à l'activité des failles sous-marines et ainsi d'améliorer nos connaissances des aléas sismiques dans la zone d'étude (Fig. 1). Afin que ce projet puisse être mené à bien il faut intégrer plusieurs techniques d'observations complémentaires (la géodésie fond de mer, la sismologie, la cartographie micro-bathymétrique, le carottage sédimentaire, etc.). Les résultats préliminaires avec l'observation de sollicitations naturelles du câble Focus (Gutscher et al., 2023, EPSL) semblent indiquer des perturbations par des courants de fonds et soulèvent l'intérêt de prendre en compte des aspects océanographiques (structure de la colonne d'eau, courants de fonds, courants liés aux marées internes, etc.).Fig. 1: Carte régionale (Gutscher et al. 2023, EPSL) montrant le câble electro-optique existant (ligne noir épaisse) et le câble Focus d'une longueur de 6 km (ligne violette) qui croise la faille Nord Alfeo Fault à 4 endroits. Les triangles noirs avec les bordures jaunes indiquent la position des stations geodésiques fond de mer, déployé lors de la campagne FocusX2.Fig. 2: Carte régionale des stations sismologiques, avec le réseau de stations terrestres permanent (triangles rose) le réseau de stations terrestres temporaire (triangles bleu) et le réseau temporaire de sismomètres fond de mer (ocean-bottom seismometers) (lozenges). Les lozanges colorés indiquent la position des 20 stations qui ont été déployées pour une année.
Caylusea hexagyna M. L. Green
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Capparales
Resedaceae
Caylusea
Caylusea hexagyna

description: Reseda canescens Linnaeus, Systema Naturae, ed. 12, 2: 330. 1767, nom. illeg.
RCN: 3482.
Lectotype (Abdallah in Meded. Landbouwhoogeschool 67-8: 44. 1967): Herb. Linn. No. 629.3 (LINN).
Current name: Caylusea hexagyna (Forssk.) M.L. Green (Resedaceae).
Note: Abdallah (in Meded. Landbouwhoogeschool 67-8: 44. 1967) treats this as heterotypic with regard to R. canescens L. (1753), and hence illegitimate.
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part R), pp. 785-805 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 789, DOI: 10.5281/zenodo.291971
DEO2M
Creators: name: MOUSSEAU Laure
Publisher: name: Sismer
Year: 2019

description: L'objectif de cette UE (DEO2M) de 6 ECTS  est de transmettre aux étudiants les outils conceptuels et pratiques nécessaires à la compréhension de la description de la diversité en milieu marin. C'est une opportunité unique dans leur cursus universitaire d'étudier au sein d'une station marine et de travailler à la mer avec utilisation de filets de prélèvements de conceptions diverses. Quatre axes directeurs principaux sont proposés, le 4ème axe concernant plutôt FE2M : Donner une formation générale et pratique sur les milieux marins dans leurs diversités taxonomiques, fonctionnelles et structurelles et les moyens pour les étudier. Observer et illustrer la diversité des adaptations morphologiques et fonctionnelle des organismes marins en réponse aux contraintes exercées par les principaux facteurs du milieu. Acquisition de compétences en taxonomie du plancton. Aborder par des enseignements appliqués (TD et sorties en mer) les différentes techniques et stratégie d'étude depuis l'échantillonnage jusqu'à l'analyse des données.
Time-restricted foraging under natural light/dark condition shifts the molecular clock in the honey bee, Apis mellifera
Creators: name: Rikesh Jain
name: Brockmann, Axel
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Evolutionary Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Honey bees have a remarkable sense of time and individual honey bee foragers are capable of adjusting their foraging activity with respect to the time of food availability. Although, there is compelling experimental evidence that foraging behavior is guided by the circadian clock, nothing is known about the underlying molecular mechanisms. Here we present for the first time a study that explores whether time-restricted foraging under natural light-dark (LD) condition affects the molecular clock in honey bees. Food was presented in an enclosed flight chamber (12 m × 4 m × 4 m) either for 2 hours in the morning or 2 hours in the afternoon for several consecutive days and daily cycling of the two major clock genes, cryptochrome2 (cry2) and period (per), were analyzed for three different parts of the nervous system involved in feeding-related behaviors: brain, subesophageal ganglion (SEG), and the antennae with olfactory sensory neurons. We found that morning and afternoon trained foragers showed significant phase differences in the cycling of both clock genes in all three tissues. In addition, the phase differences were more pronounced when the feeder was scented with the common plant odor, linalool. Together our findings suggest that foraging time may function as a Zeitgeber that might have the capability to modulate the light entrained molecular clock.
Fast, asymptotically efficient, recursive estimation in a Riemannian manifold
Creators: name: Zhou, Jialun
name: Said, Salem
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Stochastic optimisation in Riemannian manifolds, especially the Riemannian stochastic gradient method, has attracted much recent attention. The present work applies stochastic optimisation to the task of recursive estimation of a statistical parameter which belongs to a Riemannian manifold. Roughly, this task amounts to stochastic minimisation of a statistical divergence function. The following problem is considered : how to obtain fast, asymptotically efficient, recursive estimates, using a Riemannian stochastic optimisation algorithm with decreasing step sizes? In solving this problem, several original results are introduced. First, without any convexity assumptions on the divergence function, it is proved that, with an adequate choice of step sizes, the algorithm computes recursive estimates which achieve a fast non-asymptotic rate of convergence. Second, the asymptotic normality of these recursive estimates is proved, by employing a novel linearisation technique. Third, it is proved that, when the Fisher information metric is used to guide the algorithm, these recursive estimates achieve an optimal asymptotic rate of convergence, in the sense that they become asymptotically efficient. These results, while relatively familiar in the Euclidean context, are here formulated and proved for the first time, in the Riemannian context. In addition, they are illustrated with a numerical application to the recursive estimation of elliptically contoured distributions.
description: updated version of draft submitted for publication, currently under review
DIMAPLAN
Creators: name: MOUSSEAU Laure
Publisher: name: Sismer
Year: 2010

description: L'objectif de cette UE de 1ère année de master est l'observation et la description de la diversité planctonique. Les axes pédagogiques majeurs sont :1) Donner une formation générale et pratique sur les milieux marins dans leurs diversités taxonomique, fonctionnelle et structurelle et les moyens pour les étudier.2) Illustrer la diversité des adaptations morphologiques et fonctionnelle des organismes marins en réponse aux contraintes exercées par les principaux facteurs du milieu.La démarche repose essentiellement sur des enseignements appliqués et pratiques portant sur l'observation des organismes vivants. La zone côtière est explorée grâce au navire de station, tandis que l'embarquement sur le Tethys permet d'explorer des zones hauturières plus profondes (fosses au large de Nice) et d'accéder à un ensemble de taxons profonds inaccessibles avec un bateau de station. Or, cette diversité biologique hauturière est importante à appréhender pour la compréhension du fonctionnement de l'écosystème pélagique.Les embarquements à bord du N/O Tethys II donnent aux étudiants un réel apprentissage du travail de terrain en mer : planification d'une mission, manipulation des engins d'échantillonnage, travail en laboratoire, etc. et du dépouillement d'échantillons biologiques. C'est le plus souvent leur premier contact avec un travail de terrain, en mer a fortiori, et c'est toujours riche d'expériences.L'évaluation de cet apprentissage est sous forme d'un examen écrit (60%) et d'un oral de présentation des espèces observées et décrites avec comme support des fiches d'identification taxonomique établies par l'étudiant (40%). C'est une démarche d'observation des organismes et de recherches bibliographiques pour réaliser l'exercice.Les objectifs de cette UE sont très proches de DEO2M - MU4MRM27- qui fait aussi l'objet d'une demande de temps Tethys.
Probing the quantum interference between singly and doubly resonant top-quark production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This Letter presents a normalized differential cross-section measurement in a fiducial phase-space region where interference effects between top-quark pair production and associated production of a single top quark with a $W$ boson and a $b$-quark are significant. Events with exactly two leptons ($ee$, $μμ$, or $eμ$) and two $b$-tagged jets that satisfy a multi-particle invariant mass requirement are selected from $36.1$ fb$^{-1}$ of proton-proton collision data taken at $\sqrt{s}=13$ TeV with the ATLAS detector at the LHC in 2015 and 2016. The results are compared with predictions from simulations using various strategies for the interference. The standard prescriptions for interference modeling are significantly different from each other but are within $2σ$ of the data. State-of-the-art predictions that naturally incorporate interference effects provide the best description of the data in the measured region of phase space most sensitive to these effects. These results provide an important constraint on interference models and will guide future model development and tuning.
description: 29 pages in total, author list starting page 13, 2 figures, 1 table, published in PRL. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2017-05/
RREX
Creators: name: THIERRY Virginie
Publisher: name: Sismer
Year: 2015

description: La dorsale de Reykjanes est une structure topographique majeure de l'océan Atlantique Nord. Elle est située au coeur de la gyre subpolaire le long des chemins suivis par les branches hautes et basses de la cellule méridienne de retournement (MOC, Meridonal Overturning Cell). Cette dernière transporte de la chaleur vers le nord de l'Atlantique Nord et contribue à modérer le climat européen. Notre hypothèse est que la dorsale de Reykjanes influence les principales composantes des deux branches de la MOC. En effet, elle impose une contrainte forte sur la circulation horizontale et verticale ainsi que sur la distribution et l'évolution des masses d'eau ; c'est également une région où le mélange turbulent est très intense. L'objectif du projet RREX est de réaliser une étude de processus afin de mieux comprendre le rôle de la dorsale de Reykjanes sur la dynamique et la transformation des masses d'eau dans le gyre subpolaire et, in fine, sur la MOC. Ce projet s'appuie sur la réalisation de 2 campagnes océanographiques destinées à acquérir un jeu de données adéquat afin (1) de caractériser l'ensemble de la circulation autour et au-dessus de la dorsale à haute résolution et de manière synoptique, (2) de quantifier la variabilité de la structure verticale et horizontale des courants parallèles à la dorsale sur des échelles de temps journalières à saisonnières et (3) de fournir suffisamment d'observations de turbulence pour surveiller et comprendre les processus de mélange qui sont hétérogènes et intermittents.
Fundamental understanding of turbulent gas - solid flows
Creators: name: Zastawny, Marian
Publisher: name: Imperial College London
Year: 2013

description: Gas-solid flows are abundant both in nature and in industrial applications, therefore the ability to accurately predict their behaviour is of crucial importance. The main goal of the research project presented in this thesis was to develop a methodology for eff cient true direct numerical simulations (DNS) of turbulent flows with solid particles. True DNS (TDNS) in this case implies that not only all the spatial and temporal scales of the f ow f eld are directly computed, but also that the appropriate boundary conditions are imposed on surfaces of the particles allowing for the boundary layer development. The designed approach is strongly based on the ideas of the Immersed Boundary Method (IBM). In this technique, two separate computational grids are used: a fixed fluid grid and a moving triangulated one, representing the body surface. The flow equations are modif ed in the regions were the grids overlap. Various implementations of the IBM are discussed, along with the most common diff culties encountered while using this approach. These challenges include accurate imposition of the boundary conditions, evaluation of the fluid-particle momentum transfer and spurious pressure oscillations observed in the case of moving bodies. A number of improvements, designed for addressing the main IBM challenges, are proposed and evaluated on a set of test cases. Additionally, a parallel triangulation library, MFTL, designed in the course of the research project is presented. The IBM technique is subsequently adopted for the investigation of flows past non-spherical particles at a range of Reynolds numbers and orientations. The results of this study lead to the development of shape-specif c correlations evaluating the drag, lift and torques on non-spherical particles as functions of Reynolds number and the angle of incidence. Also, an approach for describing the motion of such particles is presented as well.
Reminiscences of Lottie Chaikin Plaut, 1985
Publisher: name: Columbia University
Year: 2020
Subjects: Nurse administrators
Nursing--Study and teaching
Nursing services--Administration

description: Childhood and education in Philadelphia; work as nurse in Washington, D.C. with United States Public Health Service during World War II; joined Institute of Inter-American Affairs in 1943; discussion of work in Brazil as a nursing coordinator; evaluation of success of program in Brazil and cultural difficulties
Reseda alba Linnaeus 1753
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Capparales
Resedaceae
Reseda
Reseda alba

description: Reseda fruticulosa Linnaeus, Systema Naturae, ed. 10, 2: 1046. 1759.
["Habitat in Hispania."] Sp. Pl., ed. 2, 1: 645 (1762). RCN: 3486.
Replaced synonym of: Reseda suffruticulosa L. (1762), nom. illeg.
Lectotype (Yeo in Feddes Repert. 69: 153. 1964): Herb. Linn. No. 629.12 (LINN).
Current name: Reseda alba L. (Resedaceae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part R), pp. 785-805 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 789, DOI: 10.5281/zenodo.291971
High-order harmonic generation in laser ablation plumes
Creators: name: Hutchison, Christopher
Publisher: name: Imperial College London
Year: 2013

description: High harmonic generation (HHG) is a powerful and well established technique to study ultra fast processes in atoms and molecules. Originally HHG was restricted to the study of atomic or small molecular gases. In the last few years the use of laser ablation to create plumes that are suitable media for HHG has gained interest due to is ability to allow almost any solid material to be potentially studied using HHG. Most of this thesis focuses on our advancements in this eld of ablation plume HHG spectroscopy with a small section devoted to our continuation of work focused on controlling electron trajectories in HHG through the use of an orthogonally polarised second harmonic eld. We show how through the use of a rotating target system we have been able to stabilise the ablation process to work at 1 kHz repetition rate. The ablation plumes of some transition metals have previously be shown to exhibit enhancement of particular harmonic orders linked to resonances in the parent ion. We performed investigations into tin and manganese plumes and were able to nd good agreement between the experimental data and a theoretical model. This showed that autoionising states in the ions of these materials were the most likely source of the enhancements. We present our attempts to extend the ablation plume HHG technique to work with soft materials. It was found that graphite plumes were able to produce a very strong harmonic response that is comparable with generation from an argon gas jet. It was discovered that nano particles were present in the plumes and these were mostly likely to cause of the stronger e ciency. Finally we present the rst use of laser ablation plume HHG to study molecules of biological interest. We performed HHG studies on uracil and thymine, a signal was obtained from former but not the latter. Were able to determine that during ablation there was a higher degree of molecular fragmentation from thymine molecules compared to uracil.
Ill-posedness of the Camassa-Holm and related equations in the critical space
Creators: name: Guo, Zihua
name: Liu, Xingxing
name: Molinet, Luc
name: Yin, Zhaoyang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove norm inflation and hence ill-posedness for a class of shallow water wave equations, such as the Camassa-Holm equation, Degasperis-Procesi equation and Novikov equation etc., in the critical Sobolev space $H^{3/2}$ and even in the Besov space $B^{1+1/p}_{p,r}$ for $p\in [1,\infty], r\in (1,\infty]$. Our results cover both real-line and torus cases (only real-line case for Novikov), solving an open problem left in the previous works (\cite{Danchin2,Byers,HHK}).
description: to appear JDE
SOHN AREA
Creators: name: SAMARAN Flore
Publisher: name: Sismer
Year: 2017

description: Émerger un hydrophone (et son mouillage posé au fond) sur le trajet de l'Astrolabe entre Hobbart et DDU une fois par an, le laisser en place et le récupérer et le remplacer l'année suivante. L'hydrophone enregistrera le paysage sonore sous-marin et en laboratoire le suivi de l'activité vocale des grandes baleines sera étudiée.
Extended stellar kinematics of elliptical galaxies in the Fornax cluster
Creators: name: Graham, Alister
name: Colless, Matthew
name: Busarello, Giovanni
name: Zaggia, Simone
name: Longo, G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present extended stellar kinematics for a sample of 13 elliptical galaxies in the Fornax cluster. Major-axis velocity dispersion profiles (VDPs) and rotation curves (RCs) are given for 12 of the galaxies. A major feature of this data is the spatial extension: for 8 galaxies the data extends beyond 1 R_e, and for 5 it extends beyond 2 R_e. Compared to the previously available data, this corresponds to an increase in spatial coverage by a factor from 1 to 5. Five of the ellipticals in the sample turn out to be rotationally-supported systems, having positive rotation parameter log (V/sigma)*. One of these five, and another 3 galaxies from the remaining sample, display evidence for bar-like kinematics. The data indicate that the true number of `dynamically hot' stellar systems, is much lower than previously thought: of the Es in the present sample only 1/4 are confirmed as `pressure-supported' systems. The data reveal a host of individual peculiarities, like: wiggles, strong gradients, and asymmetries in the rotation curve and/or in the velocity dispersion profile, thus showing that the presence of kinematically distinct components and/or triaxiality is a common characteristic of this class of object.
description: 27 pages, includes 15 eps figures. Accepted for publication in A&A Supp
Transversity generalized parton distributions for the deuteron
Creators: name: Cosyn, W.
name: Pire, B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Transversity generalized parton distributions (GPDs) appear as scalar functions in the decomposition of off-forward quark-quark and gluon-gluon correlators with a parton helicity flip. For a spin 1 hadron, we find 9 transversity GPDs for both quarks and gluons at leading twist 2. We study these twist-2 chiral odd quark transversity GPDs for the deuteron in a light cone convolution model, based on the impulse approximation, and using the lowest Fock-space state for the deuteron.
description: 28 pages, 13 figures; minor changes in the text, version published in PRD
Additional file 1 of The efficacy of surgery in advanced hepatocellular carcinoma: a cohort study
Creators: name: Chen, Lei
name: Sun, Tao
name: Chen, Shi
name: Ren, Yanqiao
name: Yang, Fan
name: Zheng, Chuansheng
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 1: Figure S1. The flowchart of patients inclusion. Figure S2. Kaplan-Meier curve of overall survival and cancer-specific survival of patients; A: the overall survival of patients with liver resection and non-surgery treatment; B: the cancer-specific survival of patients with liver resection and non-surgery treatment; C: the overall survival of patients with non-liver resection and liver resection combined with lymph nodes removed treatment; D: the cancer-specific survival of patients with non-liver resection and liver resection combined with lymph nodes removed treatment; the shaded area indicates the 95% Confidence Interval.
Dynamic platelet function is markedly different in patients with cancer compared to healthy donors
Creators: name: Cowman, Jonathan
name: Richter, Louis
name: Walsh, Roisin
name: Keegan, Niamh
name: Tinago, Willard
name: Ricco, Antonio J.
name: Hennessy, Bryan T
name: Kenny, Dermot
name: Dunne, Eimear
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Hematology

description: Despite a fivefold increased risk of thromboembolism in patients with cancer, the mechanism of arterial thromboembolism is poorly understood. To address this, we investigated platelet function in cancer patients and healthy controls using an assay that mimics the arterial vasculature. Blood samples from cancer patients (n = 36) and healthy controls (n = 22) were perfused through custom-made parallel-plate flow chambers coated with von Willebrand factor (VWF) under arterial shear (1,500 s−1). Multiparameter measurements of platelet interactions with the immobilized VWF surface were recorded by digital-image microscopy and analyzed using custom-designed platelet-tracking software. Six measured parameters that characterize in detail the surface motion and surface binding of several hundred platelets per blood sample differed significantly in those with cancer from the healthy donors. In particular, it was found that patients with cancer had decreased numbers of platelets interacting, translocating and adhering to VWF. There were also reductions in the speed and distances that platelets traveled on VWF in comparison to healthy controls. Platelet function differed between those with early-stage cancer compared to those with later stage cancer. Patients with advanced cancer had an increased number of platelets stably adhering to VWF and greater platelet surface coverage after a given time of interaction. To the best of our knowledge, our results demonstrate for the first time that dynamic platelet function is markedly different in patients with cancer compared to healthy donors.