cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Southeast Indian Ridge: The influence of ridge morphology on the formation of abyssal hills
Creators: name: Goff, John
name: Ma, Ying
name: Shah, Anjana
name: Cochran, James R.
name: Sempere, Jean-Christophe
Publisher: name: Columbia University
Year: 1997
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: Marine geophysics
subject: Geomorphology
subject: Mid-ocean ridges

description: In this study we estimate the statistical properties of abyssal hill morphology adjacent to the Southeast Indian Ridge in a region where the axial morphology changes from axial high to axial valley without a corresponding change in spreading rate. We explore the influence of axial morphology on abyssal hills and place these results within the context of response to spreading rate. Two cruises aboard the RN Melville collected Sea Beam 2000 multibeam data along the Southeast Indian Ridge, providing continuous multibeam coverage of the axis from ~ 89°W to ~ l 18°W, and ~100% coverage within four survey regions extending out to ~45 km (~1.2 Ma) from the axis [Sempere et al., 1997; Cochran et al., 1997). We apply the statistical modeling method of Goff and Jordan [1988] to gridded data from the four survey areas, examining in particular estimates of abyssal hill rms height, characteristic width and length, aspect ratio, and skewness. Two analyses are performed: (1) comparison of the along-axis variation in abyssal hill characteristics to ridge segmentation, and (2) a calculation of population statistics within axial high, intermediate, and axial valley data populations of this study, and comparison of these results to population statistics derived from studies adjacent to the Mid-Atlantic Ridge and East Pacific Rise. We find that abyssal hills generated along axial high mid-ocean ridges are very different from those generated along axial valley mid-ocean ridges, not only with respect to size and shape, but also in their response to such factors as spreading rate and segmentation.
BYPASS OF UV-INDUCED DNA LESIONS IN SACCHAROMYCES CEREVISIAE: EXPERIMENTAL ANALYSIS AND "IN SILICO" MODELING.
Creators: name: AMARA, FLAVIO
Publisher: name: Universit� degli Studi di Milano
Year: 2012

description: My research activity has been supported by the bioinformatic platform of the Fondazione Cariplo NOBEL Project named ?Understanding DNA damage checkpoint and repair?. The aim of this platform was to investigate the molecular mechanisms involved in the DNA Damage Response (DDR), through a Systems Biology approach.
Among the DDR pathways, the focus of my research was the DNA Damage Tolerance (DDT) pathway called Post-Replication Repair (PRR) using Saccharomyces cerevisiae cells as a model system. This pathway
leads to the bypass of UV-induced DNA lesions through a mechanism, which is poorly characterized at molecular level in comparison with the Nucleotide Excision Repair (NER) process, the mechanism leading to the effective repair of UV-induces DNA lesions. The data presented in this thesis led to the production of the first mathematical model of PRR in eukaryotic cells.
In the work carried out in this thesis I had the difficult task to manage both in silico and in vivo aspects of a Systems Biology project. Given the complexity of the PRR pathway and the lack of critical experimental data,
the attempt to build a mathematical model of PRR was an ambitious aim not free from difficulties.
Before this study, the crosstalk between PRR and other DDR pathways were unknown and, indeed, the discrepancy between the in vivo data and the in silico simulations, observed under certain experimental conditions, led to additional experiments that uncovered new unpublished aspects of PRR and others that need to be done. In this way the so called ?Circle of Systems Biology? applied to PRR can be considered closed and promising for the future: the limit of the model to particular experimental conditions is leading to a new batch of experiments to do and new hypothesis to test.
Adsorption of a Cationic Laser Dye onto Polymer/Surfactant Complex Film Fabricated by Layer-by-Layer Electrostatic Self-Assembly Technique
Creators: name: Paula, P. K.
name: Hussain, S. A.
name: Bhattacharjee, D.
name: Pal, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Fabrication of complex molecular films of organic materials is one of the most important issues in modern nanoscience and nanotechnology. Soft materials with flexible properties have been given much attention and can be obtained through bottom up processing from functional molecules, where self-assembly based on supramolecular chemistry and designed assembly have become crucial processes and technologies. In this short communication, we report the successful incorporation of cationic laser dye Rhodamine 6G abbreviated as R6G into the pre-assembled polyelectrolyte/Surfactant complex film onto quartz substrate by electrostatic adsorption technique. Poly(allylamine hydrochloride) (PAH) was used as polycation and Sodium dodecyl sulphate(SDS) was used as anionic surfactant. UV-Vis absorption spectroscopic characterization reveals the formation of only H-type aggregates of R6G in their aqueous solution and both H and J-type aggregates in PAH/SDS/R6G complex LbL films as well as the kinetics of adsorption of R6G onto the complex films. The ratio of the absorbance intensity of two aggregated bands in PAH/SDS/R6G complex films is merely independent of the concentration range of the SDS solution used to fabricate PAH/SDS complex self-assembled films. Atomic Force Microscopy reveals the formation of R6G aggregates in PAH/SDS/R6G complex films.
description: 8 pages, 5 figures
Gluon confinement and quantum censorship
Creators: name: Polonyi, Janos
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The dynamical Maxwell-cut, a degeneracy is shown to be a precursor of condensate in the phi4 and the sine-Gordon models. The difference of the way the Maxwell-cut is obtained is pointed out and quantum censorship, the generation of semiclassically looking phenomenon by loop-corrections is conjectured in the sine-Gordon model. It is argued that quantum censorship and gluon confinement exclude each other.
description: Talk prepared for the conference "Gribov-80", May 26-28, 2010, ICTP Trieste, Italy, 6 pages, 4 figures
The Perception/Action loop: A Study on the Bandwidth of Human Perception and on Natural Human Computer Interaction for Immersive Virtual Reality Applications
Creators: name: BASSANO, CHIARA
Publisher: name: Universit� degli studi di Genova
Year: 2020

description: Virtual Reality (VR) is an innovating technology which, in the last decade, has had a widespread success, mainly thanks to the release of low cost devices, which have contributed to the diversification of its domains of application. In particular, the current work mainly focuses on the general mechanisms underling perception/action loop in VR, in order to improve the design and implementation of applications for training and simulation in immersive VR, especially in the context of Industry 4.0 and the medical field. On the one hand, we want to understand how humans gather and process all the information presented in a virtual environment, through the evaluation of the visual system bandwidth. On the other hand, since interface has to be a sort of transparent layer allowing trainees to accomplish a task without directing any cognitive effort on the interaction itself, we compare two state of the art solutions for selection and manipulation tasks, a touchful one, the HTC Vive controllers, and a touchless vision-based one, the Leap Motion.
To this aim we have developed ad hoc frameworks and methodologies. The software frameworks consist in the creation of VR scenarios, where the experimenter can choose the modality of interaction and the headset to be used and set experimental parameters, guaranteeing experiments repeatability and controlled conditions. The methodology includes the evaluation of performance, user experience and preferences, considering both quantitative and qualitative metrics derived from the collection and the analysis of heterogeneous data, as physiological and inertial sensors measurements, timing and self-assessment questionnaires.
In general, VR has been found to be a powerful tool able to simulate specific situations in a realistic and involving way, eliciting user?s sense of presence,
without causing severe cybersickness, at least when interaction is limited to the peripersonal and near-action space. Moreover, when designing a VR application, it is possible to manipulate its features in order to trigger or avoid triggering specific emotions and voluntarily create potentially stressful or relaxing situations. Considering the ability of trainees to perceive and process information presented in an immersive virtual environment, results show that, when people are given enough time to build a gist of the scene, they are able to recognize a change with 0.75 accuracy when up to 8 elements are in the scene. For interaction, instead, when selection and manipulation tasks do not require fine movements, controllers and Leap Motion ensure comparable performance; whereas, when tasks are complex, the first solution turns out to be more stable and efficient, also because visual and audio feedback, provided as a substitute of the haptic one, does not substantially contribute to improve performance in the touchless case.
Spin Hall Effect induced by resonant scattering on impurities in metals
Creators: name: Fert, Albert
name: Levy, Peter M
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Spin Hall Effect (SHE) is a promising way for transforming charge currents into spin currents in spintronic devices. Large values of the Spin Hall Angle, the characteristic parameter of the yield of this transformation, have been recently found in noble metals doped with nonmagnetic impurities. We show that this can be explained by resonant scattering off impurity states split by the spin-orbit interaction. We apply our calculation to the interpretation of experiments on copper doped with 5d impurities and we describe the conditions to obtain the largest effects.
The effects of acute high-intensity aerobic exercise on motor cortical plasticity and motor learning
Creators: name: Mang, Cameron Scott
Publisher: name: University of British Columbia
Year: 2016

description: Background: Motor learning is mediated by plasticity of neural circuits involved in movement. As such, there is great interest in the development of strategies that maximize brain plasticity to promote motor learning. Aerobic exercise has emerged as an intervention with robust effects on the nervous system, including interactions with mechanisms of neuroplasticity and memory. Yet, the effects of acute aerobic exercise on plasticity and learning in the motor system are not well understood. Methods: The overall objective of this thesis was to examine the effects of a single bout of high-intensity aerobic exercise on motor cortical (M1) plasticity and motor learning for an upper limb muscle in young healthy individuals. The first three research chapters describe experiments evaluating the effects of acute high-intensity cycling on: M1 plasticity (Chapter 2), continuous motor sequence learning (Chapter 2), activity in cerebello-motor circuits (Chapter 3) and discrete motor sequence learning (Chapter 4). In Chapter 5, a study exploring relationships of genetic and epigenetic variation with acute aerobic exercise effects on M1 plasticity and motor learning is described. Summary of findings: In Chapter 2, M1 plasticity induced by paired associative stimulation was facilitated when preceded by exercise, compared to a period of rest. Further, continuous motor sequence learning was enhanced when exercise was performed prior to task practice. Transcranial magnetic stimulation assessments utilized in Chapter 3 suggested that modulation of activity in cerebello-motor circuits may contribute to exercise-induced facilitation of M1 plasticity. In Chapter 4, exercise prior to discrete motor sequence task practice enhanced the rate of improvement in task performance at a 24-hour retention test, suggesting an effect of aerobic exercise on motor memory retrieval. Finally, in Chapter 5 genetic variants and DNA methylation patterns impacting brain-derived neurotrophic factor and dopamine signaling pathways were associated with inter-individual variability in exercise effects on M1 plasticity and motor learning. Conclusions: This dissertation contributes new knowledge towards understanding the effects of acute high-intensity aerobic exercise on plasticity and learning in the motor system. The findings have implications for development of strategies to prime neuroplasticity and motor learning with acute aerobic exercise in sport or rehabilitation settings.
First astronomical unit scale image of the GW Ori triple. Direct detection of a new stellar companion
Creators: name: Berger, J. -P.
name: Monnier, J. D.
name: Millan-Gabet, R.
name: Renard, S.
name: Pedretti, E.
name: Traub, W.
name: Bechet, C.
name: Benisty, M.
name: Carleton, N.
name: Haguenauer, P.
name: Kern, P.
name: Labeye, P.
name: Longa, F.
name: Lacasse, M.
name: Malbet, F.
name: Perraut, K.
name: Ragland, S.
name: Schloerb, P.
name: Schuller, P. A.
name: Thiébaut, E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Young and close multiple systems are unique laboratories to probe the initial dynamical interactions between forming stellar systems and their dust and gas environment. Their study is a key building block to understanding the high frequency of main-sequence multiple systems. However, the number of detected spectroscopic young multiple systems that allow dynamical studies is limited. GW Orionis is one such system. It is one of the brightest young T Tauri stars and is surrounded by a massive disk. Our goal is to probe the GW Orionis multiplicity at angular scales at which we can spatially resolve the orbit. We used the IOTA/IONIC3 interferometer to probe the environment of GW Orionis with an astronomical unit resolution in 2003, 2004, and 2005. By measuring squared visibilities and closure phases with a good UV coverage we carry out the first image reconstruction of GW Ori from infrared long-baseline interferometry. We obtain the first infrared image of a T Tauri multiple system with astronomical unit resolution. We show that GW Orionis is a triple system, resolve for the first time the previously known inner pair (separation $ρ\sim$1.4 AU) and reveal a new more distant component (GW Ori C) with a projected separation of $\sim$8 AU with direct evidence of motion. Furthermore, the nearly equal (2:1) H-band flux ratio of the inner components suggests that either GW Ori B is undergoing a preferential accretion event that increases its disk luminosity or that the estimate of the masses has to be revisited in favour of a more equal mass-ratio system that is seen at lower inclination. Accretion disk models of GW Ori will need to be completely reconsidered because of this outer companion C and the unexpected brightness of companion B.
description: 5 pages, 9 figures, accepted Astronomy and Astrophysics Letters. 2011
Gravity anomalies, crustal thickness, and the pattern of mantle flow at the fast spreading East Pacific Rise, 9°-l0°N: Evidence for three-dimensional upwelling
Creators: name: Wang, Xuejin
name: Cochran, James R.
name: Barth, Ginger
Publisher: name: Columbia University
Year: 1996
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: Marine geophysics
subject: Mid-ocean ridges
subject: Gravity anomalies
subject: Crust of the Earth
subject: Mantle of the Earth

description: Gravity, bathymetry, and crustal structure data from the 9° to 10°N segment of the fast spreading northern East Pacific Rise are used to investigate density variations in the mantle in order to determine the pattern of mantle upwelling and melt distribution beneath the segment. Mantle Bouguer gravity anomaly contours are nearly parallel to the ridge axis, and there is only 3- 4 mGal variation in axial mantle Bouguer anomalies along the entire segment. However, inclusion of the gravity effects of variations in crustal thickness and structure results in a significant change in the pattern of gravity anomalies. The "subcrustal" gravity anomalies show a very distinct gravity low centered over the segment axial depth minimum near 9°50'N. Axial subcrustal gravity anomalies increase by ~ 10 mGal between 9°50'N and 9°23'N, a gradient of 0.2 mGal/km. Since the ridge axis has a uniform cross-sectional shape throughout the entire segment with abundant evidence of magmatic activity along its entire length, it is unlikely that there are significant variations in crustal thermal structure other than at the ridge tips. We thus attribute the subcrustal gravity anomalies to density variations within the mantle. The distinct gravity low centered over the depth minimum provides qualitative evidence that mantle upwelling is focused or enhanced at that location. The effects of lithospheric cooling and subsidence away from the axis were removed from the bathymetry and free-air gravity anomalies to isolate residual gravity and gravity anomalies associated with the axis. The residual anomalies were modeled by considering the axial bathymetric high to be a flexural feature resulting from the upward buoyant load of a region of low-density material beneath the axis. After accounting for the isostatic effects of variations in crustal thickness, the remaining mass deficiency necessary to support the axial high and satisfy the gravity anomalies is not evenly distributed along the axis but is 35% greater beneath the axial depth minimum at 9°50'N than between 9° 17' and 9°27'N. Mantle upwelling in this segment thus appears focused or enhanced in the area of the depth minimum.
A new type of carbon resistance thermometer with excellent thermal contact at millikelvin temperatures
Creators: name: Samkharadze, Nodar
name: Kumar, Ashwani
name: Csáthy, Gábor A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Using a new brand of commercially available carbon resistor we built a cryogenic thermometer with an extremely good thermal contact to its thermal environment. Because of its superior thermal contact the thermometer is insensitive to low levels of spurious radio frequency heating. We calibrated our thermometer down to 5mK using a quartz tuning fork He-3 viscometer and measured its thermal resistance and thermal response time.
description: 5 pages, 4 figures
A new radical trifluoromethoxylation strategy and investigation on the fluorination of boronic acids using electrophilic N-F reagents
Creators: name: Binayeva, Meruyert
Publisher: name: University of British Columbia
Year: 2016

description: Fluorine-containing motifs are important components in pharmaceuticals and agrochemicals. Upon incorporation of fluorinated moieties, many small molecules show enhanced bioavailability, lipophilicity and metabolic stability. Despite their industrial importance, many fluorinated motifs remain a significant synthetic challenge. This thesis describes the investigation and development of new radical fluorination methods for the synthesis of two important, and synthetically challenging fluorinated motifs: trifluoromethoxyarenes and aryl fluorides. Chapter 1 provides a literature survey on the importance of fluorinated small molecules and outlines current methods to synthesize them. The chapter begins with a historic overview of fluorinated pharmaceuticals. Common fluorination reagents are then summarized, including anionic, cationic, and radical sources of fluorine. The chapter concludes with a brief survey of the application of ¹⁸F-fluorinated molecules in Positron Emission Tomography (PET). Chapter 2 outlines work towards the development of a radical fluorodecarboxylation methodology for the synthesis of trifluoromethoxy ethers. The chapter begins with a review of synthetic methodologies to access trifluoromethoxylated molecules that have been developed over the last few decades. Next, a novel methodology based on a radical fluorodecarboxylation method will be presented along with substrate scope studies. XeF₂ was used both to induce decarboxylation and as atomic fluorine source. The reaction afforded good yields for electron-rich substrates, whereas electron-deficient substrates and naphthol derivatives produced lower yields. Chapter 3 outlines work for the fluorination of aryl boronic acid and boronated derivatives using Selectfluor®. The chapter starts with a brief overview of known methodologies in fluorination of boronic acid derivatives. Studies towards synthesizing aryl fluorides from a number of boronic acid and boronate ester derivatives will then be described. Preliminary results of this transition metal-free method showed that the reaction is substrate dependent, and the general product yields were low.
La Corée du Nord : enjeu dans les négociations intercoréennes et internationales
Creators: name: Potelleret, Lyvan
Publisher: name: Zenodo
Year: 2022
Subjects: Corée du Nord
Corée
Relations Internationales
Droit International Public
North Korea
Kim Jong-un

description: Cette étude analyse le rôle de la Corée du Nord sous la direction de Kim Jong-un dans les négociations intercoréennes et internationales. En se basant sur une analyse approfondie de la politique étrangère de la Corée du Nord, cette étude examine les enjeux et les défis auxquels la Corée du Nord est confrontée dans les négociations intercoréennes et internationales. L'objectif est de fournir une compréhension approfondie des dynamiques actuelles et des perspectives d'avenir de la Corée du Nord dans le contexte des relations internationales.
description: {"references": ["Potelleret, Lyvan (2022). La Cor\u00e9e du Nord : enjeu dans les n\u00e9gociations intercor\u00e9ennes et internationales. Universit\u00e9 Clermont Auvergne"]}
Additional file 1 of A vegan diet improves insulin resistance in individuals with obesity: a systematic review and meta-analysis
Creators: name: Chen, Peng
name: Zhao, Ying
name: Chen, Yan
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Computational Biology

description: Additional file 1: Figure S1. Sensitivity analysis of HOMA-IR. Figure S2. Sensitivity analysis of total cholesterol. Figure S3. Sensitivity analysis of HDL-cholesterol. Figure S4. Sensitivity analysis of LDL-cholesterol. Figure S5. Sensitivity analysis of triglycerides. Figure S6. Sensitivity analysis to test the robustness of the effectiveness of a plant diet on the metabolic parameter triglycerides by sequentially excluding individual studies. Table S1. Search processes in PubMed, Embase, and the Cochrane Library.
Higher Order Statistics for Three-dimensional Shear and Flexion
Creators: name: Munshi, Dipak
name: Kitching, Thomas
name: Heavens, Alan
name: Coles, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We introduce a collection of statistics appropriate for the study of spinorial quantities defined in three dimensions, focussing on applications to cosmological weak gravitational lensing studies in 3D. In particular, we concentrate on power spectra associated with three- and four-point statistics, which have the advantage of compressing a large number of typically very noisy modes into a convenient data set. It has been shown previously by \cite{MuHe09} that, for non--Gaussianity studies in the microwave background, such compression can be lossless for certain purposes, so we expect the statistics we define here to capture the bulk of the cosmological information available in these higher-order statistics. We consider the effects of a sky mask and noise, and use Limber's approximation to show how, for high-frequency angular modes, confrontation of the statistics with theory can be achieved efficiently and accurately. We focus on scalar and spinorial fields including convergence, shear and flexion of 3D weak lensing, but many of the results apply for general spin fields.
Iniciativas científicas e culturais no campo da História Religiosa (1999/2000)
Creators: name: Fontes, Paulo F. Oliveira
name: Costa, Isabel Teixeira
Publisher: name: Lusitania Sacra
Year: 2000

description: Lusitania Sacra, n. 12 (2000): Protestantismo e Catolicismo em Portugal nos Séculos XIX e XX
The spectral sequences and parametric normal forms
Creators: name: Gazor, Majid
name: Yu, Pei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We generalize recent developments on normal forms and the spectral sequences method to make a foundation for parametric normal forms. We further introduce a new style and costyle to obtain unique parametric normal forms. The results are applied to systems of generalized Hopf singularity with multiple parameters. A different (new) version of this paper has been submitted for a possible publication in a refereed journal.
Layer-by-Layer assembling and characterizations of dye-polyions onto solid substrate by Electrostatic adsorption process
Creators: name: Islam, Md. N.
name: Paul, P. K.
name: Hussain, S. A.
name: Bhattacharjee, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Self assembled films of organic azobenzene dye chicago sky blue 6B (CSB) have been fabricated onto solid substarte by electrostatic alternate adsorption of polycation ploy(allyl amine hydrochloride) (PAH) and CSB. UV-Vis absorption spectroscopic studies reveal the successful incorporation of CSB molecules into LbL films and consequent formation of aggregates. This view is supported by FTIR spectroscopic studies. Scanning electron microscope picture confirms the formation of nano crystalline aggregates in the LbL films. About 15 minute is required to complete the electrostatic interaction between PAH and CSB molecules in one bi-layer LbL film.
description: 15 pages, 5 figures
Singularity in Gravitational Collapse of Plane Symmetric Charged Vaidya Spacetime
Creators: name: Sharif, M.
name: Siddiqa, Aisha
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the final outcome of gravitational collapse resulting from the plane symmetric charged Vaidya spacetime. Using the field equations, we show that the weak energy condition is always satisfied by collapsing fluid. It is found that the singularity formed is naked. The strength of singularity is also investigated by using Nolan's method. This turns out to be a strong curvature singularity in Tipler's sense and hence provides a counter example to the cosmic censorship hypothesis.
description: 8 pages, accepted for publication in Mod. Phys. Lett A
Curso Aberto e Seminário de "Diplomática Eclesiástica" (CEHR, 10 a 14 e15 de Janeiro de 2000)
Creators: name: Rosa, Maria De Lurdes
Publisher: name: Lusitania Sacra
Year: 2000

description: Lusitania Sacra, n. 12 (2000): Protestantismo e Catolicismo em Portugal nos Séculos XIX e XX
ARTEMIS IV Radio Observations of the 14 July 2000 Large Solar Event
Creators: name: Caroubalos, C.
name: Alissandrakis, C. E.
name: Hillaris, A.
name: Nindos, A.
name: Tsitsipis, P.
name: Moussas, X.
name: Bougeret, J. -L.
name: Bouratzis, K.
name: Dumas, G.
name: Kanellakis, G.
name: Kontogeorgos, A.
name: Maroulis, D.
name: Patavalis, N.
name: Perche, C.
name: Polygiannakis, J.
name: Preka-Papadema, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this report we present a complex metric burst, associated with the 14 July 2000 major solar event, recorded by the ARTEMIS-IV radio spectrograph at Thermopylae. Additional space-borne and Earth-bound observational data are used, in order to identify and analyze the diverse, yet associated, processes during this event. The emission at metric wavelengths consisted of broad-band continua including a moving and a stationary type IV, impulsive bursts and pulsating structures. The principal release of energetic electrons in the corona was 15 20 min after the start of the flare, in a period when the flare emission spread rapidly eastwards and a hard X-ray peak occurred. Backward extrapolation of the CME also puts its origin in the same time interval, however, the uncertainty of the extrapolation does not allow us to associate the CME with any particular radio or X-ray signature. Finally, we present high time and spectral resolution observations of pulsations and fiber bursts, together with a preliminary statistical analysis.
description: Solar Physics, v. 204, Issue 1/2, p. 165-177 (2001)
Reasons for the preventive shift of Chinese criminal law : using the eighth amendment as a case study
Creators: name: Ji, Ying
Publisher: name: University of British Columbia
Year: 2016

description: This dissertation concerns reasons for the preventive shift in Chinese criminal law; that is, the social, legal, and political rationales of the shift. It is inspired by the eighth amendment of Chinese criminal law in 2011 which amended several penalties related to road, drug, and environmental safety. The eighth amendment stemmed from a series of nationally-known incidents that triggered widespread public dissatisfaction with the rules and functions of the Chinese criminal justice system. This dissatisfaction would eventually result in a crisis of the government and the legal system. Based on John Kingdon’s theory of the multiple streams (“problems, policies and politics”), this dissertation seeks to explain the origins of the legislative process and its outcomes by examining the role of public opinion, policy experts, and political actors in the making of Chinese criminal law. It also uses practices of the UK and the US as references. The dissertation claims that in authoritarian China, the prominence of risk control through criminal justice methods is a state response to uncertainties generated through reforms under the Chinese Communist Party’s leadership. This shift is the result of Chinese criminal law making, driven by the policy of pursuing public security. Under the influence of such policy, the legislation not only acts quickly in response to public emotion, but also to the social control demands of the police. It also gains more support through the responsive and inclusive process of legislation, even though most of the time it remains a consultation with the elites in the framework set by the CCP. In China, the current legislation of criminal law enhances the CCP’s legitimacy. However, compared with the West, how to restrain the expansion of criminal law is a more critical issue for consideration for the authoritarian state like China.
The Appearance of a Radio-Pulsar Magnetosphere from a Vacuum with a Strong Magnetic Field. Motion of Charged Particles
Creators: name: Istomin, Ya. N.
name: Sob'yanin, D. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The motion of electrons and positrons in the vacuum magnetosphere of a neutron star with a surface magnetic field of B~10^12 G is considered. Particles created in the magnetosphere or falling into it from outside are virtually instantaneously accelerated to Lorentz factors gamma~10^8. After crossing the force-free surface, where the projection of the electric field onto the magnetic field vanishes, a particle begins to undergo ultra-relativistic oscillations. The particle experiences a regular drift along the force-free surface simultaneous with this oscillatory motion.
description: 30 pages, 1 figure
Search for ν_μ-> ν_τoscillations in appearance mode in the OPERA experiment
Creators: name: Kose, Umut
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The OPERA experiment in the underground Gran Sasso Laboratory (LNGS) has been designed to perform the first detection of neutrino oscillations in direct appearance mode in the muon neutrino to tau neutrino channel. The detector is hybrid, being made of an emulsion/lead target and of electronic detectors. It is placed in the CNGS neutrino beam 730 km away from the neutrino source. Runs with CNGS neutrinos were successfully carried out in 2008, 2009, and 2010. After a brief description of the beam and the experimental setup, we report on event analysis of a sample of events corresponding to 1.89\times 10^{19} p.o.t. in the CERN CNGS ν_μ beam that yielded the observation of a first candidate ν_τ CC interaction. The topology and kinematics of this candidate event are described in detail. The background sources are explained and the significance of the candidate is assessed.
description: Contribution to Les Rencontres de Physique de la Vall\'ee D'Aoste (La Thuile, February 27-March 5 2011); 8 pages, 4 figures
Linha de intervenção do CEHR no campo dos arquivos religiosos
Creators: name: Guerreiro, Jacinto Salvador
name: Rosa, Maria De Lurdes
name: Fontes, Paulo F. De Oliveira
name: Penteado, Pedro
Publisher: name: Lusitania Sacra
Year: 2000

description: Lusitania Sacra, n. 12 (2000): Protestantismo e Catolicismo em Portugal nos Séculos XIX e XX
Curso de Formação de Técnicos-Adjuntos de Arquivo: variante de Arquivos Religiosos
Creators: name: Fontes, Paulo F. De Oliveira
Publisher: name: Lusitania Sacra
Year: 2000

description: Lusitania Sacra, n. 12 (2000): Protestantismo e Catolicismo em Portugal nos Séculos XIX e XX
STUDY OF FAST ELECTRON TRANSPORT AND ENERGETIC PROTON GENERATION AT HIGH LASER INTENSITY AND APPLICATION TO FAST IGNITION
Creators: name: MORACE, ALESSIO
Publisher: name: Universit� degli Studi di Milano
Year: 2013

description: Fast Ignition is a very promising, alternative way to achieve energy gain in Inertial Confinement Fusion (ICF) research. It is based on the decoupling of the compression and heating stages of an equi-molar Deuterium-Tritium (DT) plasma, allowing to loose the very tight constraints of the classic central hot spot (CHS) ignition concept, and attaining higher energy gain. The compression of the DT capsule is performed by symmetrically focusing an array of energetic, long (ns) laser pulses on the capsule, inducing its implosion by ablation pressure driven convergent shocks. The heating of the compressed DT plasma is produced by energetic particle beams (electrons or protons), generated by an energetic, ultra-intense (I approx 10^20 W/cm2) short (approx 20 ps) laser pulse, focused at the instant of DT peak compression.
The study of generation and transport of laser produced fast electrons and protons is therefore fundamental for the achievement of Fast Ignition ICF.
In this work I present the experimental as well as modeling study of fast electron transport and proton beam generation, with application to Fast Ignition. In particular in this work I studied the fast electron transport in rapidly changing plasma density and temperature gradients, conditions expected in a full scale Fast Ignition experiment.
In the second part of this work I demonstrated a method to improve the laser-to-proton energy conversion efficiency in a way very suitable for Fast Ignition as well as for medical application.
The Bauer scarp ridge jump: a complex tectonic sequence revealed in satellite altimetry
Creators: name: Goff, John
name: Cochran, James R.
Publisher: name: Columbia University
Year: 1996
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: Marine geophysics
subject: Plate tectonics
subject: Mid-ocean ridges
subject: Sea-floor spreading
subject: Gravity

description: We investigate here the ridge jump that led to abandonment of the Galapagos Rise and formation of the Batter scarp during the initiation of the present day configuration of the East Pacific Rise since the lower Miocene. We use recently available high-resolution satellite-derived gravity data to investigate in detail the tectonic structure of the eastern Pacific from the Equator to 20%. With this data, we identify fracture zones, abandoned spreading ridges, scarps, and other seafloor features that provide evidence for discerning tectonic history. Based on our structural interpretation of the satellite-derived gravity field, we make the following conclusions: (1) The Galapagos Rise spreading center appears to have originated by opening of the Marquesas/Mendana transform complex as a result of the change in spreading direction following breakup of the Farallon Plate. (2) The Galapagos Rise was not the sole locus of spreading following plate reorganization at ~ 20 Ma through to the initiation of the Bauer scarp at ~ 8 Ma, as had been previously hypothesized. Rather, it and a second western spreading axis were likely active concurrently, forming a counterclockwise-rotating Bauer Microplate at a much earlier stage than thought previously. (3) The Bauer scarps are pseudofaults associated with northward rift propagation. Propagation proceeded in several stages. A first propagator emanating from the Garrett transform complex stalled at the future location of the Wilkes transform creating an area of complex morphology near its northern tip. A second propagator, also emanating from the Garrett complex followed in the first’s wake and broke through the complex region. At this point the propagation proceeded very rapidly to the northern end of the Bauer Microplate (the Gallego fracture zone, later to become the Yaquina transform fault). Ridge propagation continued north in two more stages, creating the Gofar and Quebrada transforms at the terminus of each stage.
Memory circuit elements: from systems to applications
Creators: name: Pershin, Y. V.
name: Martinez-Rincon, J.
name: Di Ventra, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper, we briefly review the concept of memory circuit elements, namely memristors, memcapacitors and meminductors, and then discuss some applications by focusing mainly on the first class. We present several examples, their modeling and applications ranging from analog programming to biological systems. Since the phenomena associated with memory are ubiquitous at the nanoscale, we expect the interest in these circuit elements to increase in coming years.
description: to be published in the Journal of Computational and Theoretical Nanoscience
MARKERS OF INFLAMMATION, IMMUNITY AND RENAL DAMAGE IN DOGS WITH CANINE LEISHMANIASIS
Creators: name: IBBA, FABRIZIO
Publisher: name: Universit� degli Studi di Milano
Year: 2014

description: Canine Leishmaniasis is a zoonotic disease that is spreading over mediterranean basin. Despite the pathogenesis of canine leishmaniasis has been investigated through several studies, some aspect of the host-parasite interaction that lead to overt diseases and typical inflammatory lesions have not yet been understood. Among these, the oxidant-anti-oxidant mechanisms that occur in dogs with the clinical disease are particularly interesting since on one hand they can provide to us useful information on the pathogenesis of the disease, which can also be a model for investigating immune-mediated chronic inflammatory conditions occurring also in other species on the other hand the identification of changes in molecules involved in oxidative stress may serve as a potential target for ancillary treatments or as markers of disease severity and progression. Similarly, most of the researches done until now have been focused on renal damage but only a few studies were focused on markers of tubular damage, despite the development of tubulo-interstitial nephritis is associated with more advanced stages of the disease. As regards inflammatory/oxidative responses, our studies confirmed the presence of oxidative phenomena associated with the inflammatory profiles of infected dogs and suggested that reactive oxygen species released by inflammatory cells are not the only oxidative mediators involved in this disease. The serial analysis of markers of inflammation or oxidation defined the possible role of these markers as prognostic factors, especially after treatment. More specifically, antioxidant molecules such as PON1 and HDL may play a role as early markers of remission after treatment since they quickly normalize in dogs that respond to treatments. As regards renal markers, we evidenced the possible role of GGT as a simple and inexpensive marker of tubular damage in dogs with leishmaniasis.
Influence of a weak layer on depth of rock failure in underground limestone mines in high horizontal stress environments
Creators: name: Metcalfe, Joshua Robert
Publisher: name: University of British Columbia
Year: 2016

description: High horizontal stress environments have plagued the aggregate industry in shallow room and pillar mining operations, particularly in the northeastern United States. With population density increasing around Southern Ontario and environmental regulations becoming more stringent, it appears that Ontario’s aggregate industry could be looking underground in the near future as the source of material to meet the ever-increasing demand. Given that the near surface horizontal stress conditions in Southern Ontario are uniquely high (σH/σV = 4-6 to depths of 200m; Lo, 1978), it can be expected that slabbing and buckling failures observed in similar mining operations with lower stress regimes in the U.S. will be exacerbated in Southern Ontario. In an effort to be proactive with this expected geotechnical design issue, a distinct element analysis using UDEC was carried out to understand the mechanisms driving failure in stratified rock environments under high horizontal stress conditions as well as to observe the impact of the high horizontal stress on the maximum depth of failure in the roof where the roof is composed of limestone interbedded with a weak shale layer. Accordingly, 116 models representing a variation of rock mass conditions subjected to stress ratios (σH/σV) ranging from 1 to 4 were simulated. A Voronoi tessellation was used to represent the intact rock mass directly above the excavation so that the failure profile through intact rock could be explicitly modelled. Key conclusions from the modelling were as follows: 1) A shale layer within a defined distance from the roof of the excavation could increase the depth of failure to three times what would normally be estimated for stratified rock masses of limestone only. 2) Failure driven by the influence of a weak shale interbed occurs through diagonal fracturing, supporting an experimental conclusion published by Stimpson and Ahmed (1992), as opposed to slabbing or buckling. Slabbing and buckling are the common failure mechanisms in stratified rock masses without weak interbeds. Therefore, it is critical to understand the interbedded nature of the rock mass comprising the roof over a mine opening so that a proper ground support design can be developed.
Capturing vulnerability : towards a method for assessing, mitigating, and monitoring gendered violence in mining communities in British Columbia
Creators: name: Stockwell, Alison Marie
Publisher: name: University of British Columbia
Year: 2016

description: The impacts of the extractive industry (mining, oil and gas) on the health and safety of rural and Aboriginal women are largely unidentified and unmitigated in British Columbia (BC) environmental assessments. In relation to extractive industries, women experience direct and indirect impacts in unique ways. Globally, evidence suggests that extractive industries are associated with increased incidence of substance abuse, prostitution, and violence against women. Rural and Aboriginal women are among the most vulnerable people in Canada. They experience high levels of domestic and non-domestic violence and have limited access to health services. While BC’s environmental assessments are increasingly rigorous, health impacts beyond environmental exposures, such as those related to violence in communities, are considered out of scope and the indicators used to assess, mitigate, and monitor them remain undeveloped. This research, part of a collaborative five-year project on extractive industries and community health in BC, sought to: (1) synthesize findings from the literature on women’s health and safety in relation to extractive industry development; (2) identify indicators of vulnerability of rural and Aboriginal women to violent victimization in BC; and (3) develop a mapped composite indicator to identify regions of BC where poor health, substance abuse, and violence are endemic, and where women are at risk of violent victimization. The resulting indicator provides a proposed model for assessing and monitoring population vulnerability in relation to major projects and enhancing the current environmental assessment process. Results indicate that BC’s northernmost regions are highly vulnerable, characterized by low health status and access to services, high levels of substance abuse and violent crime, and a high proportion of women at risk of violent victimization. Recommendations are made for extractive industry proponents, regulators and impact assessors, and affected communities to make use of quantitative tools to better capture vulnerability in relation to extractive projects. Subsequently, targeted mitigation measures that address violence and consider the needs of vulnerable populations can be prescribed in regions where extractive industry projects operate. This work was completed as part of the University of British Columbia Bridge Program with funding from Vancouver Foundation and the Canadian Institutes for Health Research.
The Appearance of a Radio-Pulsar Magnetosphere from a Vacuum with a Strong Magnetic Field. Accumulation of Particles
Creators: name: Istomin, Ya. N.
name: Sob'yanin, D. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The accumulation of electrons and positrons in the vacuum magnetosphere of a neutron star with a surface magnetic field of B~10^12 G is considered. It is shown that particles created in the magnetosphere or falling into the magnetosphere from outside undergo ultra-relativistic oscillations with a frequency of 10-100 MHz. These oscillations decay due to energy losses to curvature radiation and bremsstrahlung, with their frequencies reaching 1-10 GHz. Simultaneously, the particles undergo regular motion along the force-free surface along closed trajectories. This leads to the gradual accumulation of particles at the force-free surface and the formation of a fully charge-separated plasma layer with a density of the order of the Goldreich-Julian density. The presence of a constant source of electron-positron pairs in the magnetosphere due to the absorption of energetic cosmic gamma-rays leads to the growth of this layer, bringing about a rapid filling of the pulsar magnetosphere with electron-positron plasma if the pair-creation multiplication coefficient is sufficiently high.
description: 22 pages, 2 figures