cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Protecting our beta-lactam antibiotic assets : structural investigation of beta-lactamases
Creators: name: King, Dustin T.
Publisher: name: University of British Columbia
Year: 2016

description: Bacterial diseases have an enormous impact on human health. The most widespread class of human antibacterials is the β-lactams that target the transpeptidase activity of penicillin-binding proteins, which are responsible for cross-linking the peptidoglycan cell-wall. However, bacteria have gained resistance to all major classes of β-lactams. To protect the clinical utility of the β-lactams it is essential to understand the structural basis for this resistance. This thesis aims to better understand the molecular details governing extended-spectrum β-lactamase mediated β-lactam resistance, and to gain insights into inhibition of these emerging resistance factors. Recently, a novel resistance factor known as the New Delhi Metallo-β-Lactamase-1 has been found to confer enteric pathogens such as Escherichia coli and Klebsiella pneumoniae with nearly complete resistance to all β-lactams. The 2.1Å resolution crystal structure of K. pneumoniae holo-NDM-1 revealed an expansive active site, which we propose leads to a broader β-lactam substrate specificity. Furthermore, NDM-1 localizes to the bacterial outer-membrane by sucrose density gradient centrifugation. The structural details underpinning the broad-spectrum resistance of NDM-1 was further investigated by analysis of the protein in complex with hydrolyzed β-lactams as well as bound to the inhibitor L-captopril. An analysis of the NDM-1 active site in these structures reveals key features important for the informed design of novel inhibitors of NDM-1 and other metallo-β-lactamases. The novel diazabicyclooctane (DBO) avibactam inhibits a wider range of serine β-lactamases than has been previously observed with clinical β-lactamase inhibitors. To understand the molecular basis and spectrum of inhibition by avibactam, we provide structural and mechanistic analysis of the compound in complex with important class A and D serine β-lactamases. A kinetic analysis of key active-site mutants for class A β-lactamase CTX-M-15 allows us to propose a validated mechanism for avibactam-mediated β-lactamase inhibition including a unique role for S130, which acts as a general base. We then show that avibactam derivatives retain β-lactamase inhibitory properties but also exhibit considerable antimicrobial activity against clinically relevant bacteria via targeting penicillin-binding proteins. Our results provide evidence that structure-activity relationship studies for the purposes of drug discovery must consider both β-lactamases and penicillin-binding proteins as targets.
GOUVEIA, António de - Jornada do Arcebispo. Lisboa, 1988, 345 p.
Creators: name: Rolo, Raul
Publisher: name: Lusitania Sacra
Year: 1990

description: Lusitania Sacra, n. 2 (1990): Pensamento e Obra do Cardeal Cerejeira: no Centenário do seu Nascimento
Non-equilibrium dynamics of Bosonic Mott insulators in an electric field
Creators: name: Kolodrubetz, Michael
name: Pekker, David
name: Clark, Bryan K.
name: Sengupta, Krishnendu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the non-equilibrium dynamics of one-dimensional Mott insulating bosons in the presence of a tunable effective electric field E which takes the system across a quantum critical point (QCP) separating a disordered and a translation symmetry broken ordered phase. We provide an exact numerical computation of the residual energy Q, the log-fidelity F, the excess defect density D, and the order parameter correlation function for a linear-in-time variation of E with a rate v. We discuss the temporal and spatial variation of these quantities for a range of v and for finite system sizes as relevant to realistic experimental setups [J. Simon et al., Nature 472, 307 (2011)]. We show that in finite-sized systems Q, F, and D obey Kibble-Zurek scaling, and suggest further experiments within this setup to test our theory.
description: 4+epsilon pages, 3 figures
FLORETO de São Francisco, reprodução fac-similada do incunábulo n.° 175 da BNL. Nota de apresentação de José Adriano de Freitas Carvalho. Porto: Programa Nacional de Edições Comemorativas dos Descobrimentos Portugueses., 1988, XII + 246 p.
Creators: name: Rema, H. Pinto
Publisher: name: Lusitania Sacra
Year: 1990

description: Lusitania Sacra, n. 2 (1990): Pensamento e Obra do Cardeal Cerejeira: no Centenário do seu Nascimento
BREVIÁRIO bracarense de 1494. Reprodução em fac-simile do exemplar da Biblioteca Nacional. Introdução de Pedro Romano Rocha. Lisboa: Imprensa Nacional-Casa da Moeda, 1987, 688 p.
Creators: name: Marques, José
Publisher: name: Lusitania Sacra
Year: 1990

description: Lusitania Sacra, n. 2 (1990): Pensamento e Obra do Cardeal Cerejeira: no Centenário do seu Nascimento
Clusters of Exceptional Points for a Laser Control of Selective Vibrational Transfer
Creators: name: Lefebvre, Roland
name: Jaouadi, Amine
name: Atabek, Osman
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: When a molecule is exposed to a laser field, all field-free vibrational states become resonances, with complex quasi energies calculated using Floquet theory. There are many ways to produce the coalescences of pairs of such quasi energies, with appropriate wavelength-intensity choices which define Exceptional Points (EP) in the laser parameter plane. We dress for the molecular ion H$_2^+$ an exhaustive map of these exceptional points which appear in clusters. Such clusters can be used to define several vibrational transfer scenarios implying more than a single exceptional point, exchanging single or multiple vibrational quanta. The ultimate goal is molecular vibrational cooling by transferring an initial (thermal, for instance) population on a final (ground, for instance) single vibrational state. When a molecule is exposed to a laser field, all field-free vibrational states become resonances, with complex quasi energies calculated using Floquet theory. There are many ways to produce the coalescences of pairs of such quasi energies, with appropriate wavelength-intensity choices which define Exceptional Points (EP) in the laser parameter plane. We dress for the molecular ion H$_2^+$ an exhaustive map of these exceptional points which appear in clusters. Such clusters can be used to define several vibrational transfer scenarios implying more than a single exceptional point, exchanging single or multiple vibrational quanta. The ultimate goal is molecular vibrational cooling by transferring an initial (thermal, for instance) population on a final (ground, for instance) single vibrational state.
description: 16 pages, 7 figures, 1 table
Force-detected nuclear magnetic resonance: Recent advances and future challenges
Creators: name: Poggio, M.
name: Degen, C. L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We review recent efforts to detect small numbers of nuclear spins using magnetic resonance force microscopy. Magnetic resonance force microscopy (MRFM) is a scanning probe technique that relies on the mechanical measurement of the weak magnetic force between a microscopic magnet and the magnetic moments in a sample. Spurred by the recent progress in fabricating ultrasensitive force detectors, MRFM has rapidly improved its capability over the last decade. Today it boasts a spin sensitivity that surpasses conventional, inductive nuclear magnetic resonance detectors by about eight orders of magnitude. In this review we touch on the origins of this technique and focus on its recent application to nanoscale nuclear spin ensembles, in particular on the imaging of nanoscale objects with a three-dimensional (3D) spatial resolution better than 10 nm. We consider the experimental advances driving this work and highlight the underlying physical principles and limitations of the method. Finally, we discuss the challenges that must be met in order to advance the technique towards single nuclear spin sensitivity -- and perhaps -- to 3D microscopy of molecules with atomic resolution.
description: 15 pages & 11 figures
Resonant enhancement of the zero-phonon emission from a color center in a diamond cavity
Creators: name: Faraon, Andrei
name: Barclay, Paul E.
name: Santori, Charles
name: Fu, Kai-Mei C.
name: Beausoleil, Raymond G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate coupling of the zero-phonon line of individual nitrogen-vacancy centers and the modes of microring resonators fabricated in single-crystal diamond. A zero-phonon line enhancement exceeding ten-fold is estimated from lifetime measurements at cryogenic temperatures. The devices are fabricated using standard semiconductor techniques and off-the-shelf materials, thus enabling integrated diamond photonics.
description: 5 pages, 4 figures
Global Economics Prospects in 2023: The impact of the global recession on the world's purchasing power.
Creators: name: Ating, Rashid
name: Renugah Rengasamy
Publisher: name: Zenodo
Year: 2023
Subjects: recession, global

description: Following the 1997 Asian Financial Crisis and the 2007-2008 Subprime Mortgage Crisis, the World Bank and the International Monetary Fund (IMF) predicted that the world would face another severe financial crisis. In the World Bank report ‘Global Economic Prospects’ published in July 2022, the financial crisis was driven by several factors: the ongoing war between Russia and Ukraine, the Zero-Covid Policy in China, and a slow-moving recovering economy.
A study of the X-rayed outflow of APM 08279+5255 through photoionization codes
Creators: name: Saez, C.
name: Chartas, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present new results from our study of the X-rayed outflow of the z = 3.91 gravitationally lensed broad absorption line (BAL) quasar APM 08279+5255. These results are based on spectral fits to all the long exposure observations of APM 08279+5255 using a new quasar-outflow model. This model is based on cloudy simulations of a near-relativistic quasar outflow. The main conclusions from our multi-epoch spectral re-analysis of Chandra, XMM-Newton and Suzaku observations of APM 08279+5255 are: 1) In every observation we confirm the presence of two strong features, one at rest-frame energies between 1-4 keV, and the other between 7-18 keV. 2) We confirm that the low-energy absorption (1-4 keV rest-frame) arises from a low-ionization absorber with logNH~23 and the high-energy absorption (7-18 keV rest-frame) arises from highly ionized (3>log xi>4; where xi is the ionization parameter) iron in a near-relativistic outflowing wind. Assuming this interpretation, we find that the velocities on the outflow could get up to ~0.7c. 3) We confirm a correlation between the maximum outflow velocity and the photon index and find possible trends between the maximum outflow velocity and the X-ray luminosity, and between the total column density and the photon index. We performed calculations of the force multipliers of material illuminated by absorbed power laws and a Mathews-Ferland SED. We found that variations of the X-ray and UV parts of the SEDs and the presence of a moderate absorbing shield will produce important changes in the strength of the radiative driving force. These results support the observed trend found between the outflow velocity and X-ray photon index in APM 08279+5255. If this result is confirmed it will imply that radiation pressure is an important mechanism in producing quasar outflows.
description: Paper accepted in the Astrophysical journal
Congresso Internacional Comemorativo do IX Centenário da Dedicação da Sé de Braga
Creators: name: Sousa, Pio G. Alves De
Publisher: name: Lusitania Sacra
Year: 1990

description: Lusitania Sacra, n. 2 (1990): Pensamento e Obra do Cardeal Cerejeira: no Centenário do seu Nascimento
title: Ð¦Ð¸ÑÑÐ¾Ð²Ð°Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð²
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: Ð¢ÑÑÑÐ³Ð¸Ð½, ÐÐ»Ð°Ð´Ð¸Ð¼Ð¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐÑÐµÐ¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ (Ð¼Ð°Ñ.) Ð¤ÑÑÑÐµ
Ð­Ð»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»Ñ
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ÑÐ¸ÑÑÐ¾Ð²Ð°Ñ ÑÐ¸Ð»ÑÑÑÐ°ÑÐ¸Ñ
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ÑÑÐµÐ±Ð½Ð¸ÐºÐ¸ Ð¸ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ Ð´Ð»Ñ Ð²ÑÐ·Ð¾Ð²

description: Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¾ÑÐ½Ð¾Ð²Ñ Ð¸ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð±Ð°Ð·Ð¾Ð²ÑÑ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² Ð¸ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼ ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸: Ð±ÑÑÑÑÐ¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½Ð¾Ð³Ð¾ Ð¿ÑÐµÐ¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¤ÑÑÑÐµ, ÑÐ°Ð·Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð² Ð´ÐµÐ¹ÑÑÐ²Ð¸ÑÐµÐ»ÑÐ½ÑÐ¹ Ð¸ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½ÑÐ¹ ÑÑÐ´ Ð¤ÑÑÑÐµ, ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ ÑÐ¸Ð»ÑÑÑÐ°ÑÐ¸Ð¸, ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¸, Ð»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð¹ ÑÐ²ÐµÑÑÐºÐ¸. ÐÐ¿Ð¸ÑÐ°Ð½Ñ Ð¿ÑÐ¸ÐµÐ¼Ñ ÑÐµÑÐµÐ½Ð¸Ñ ÑÐ»Ð¾Ð¶Ð½ÑÑ Ð·Ð°Ð´Ð°Ñ Ð¿ÑÑÐµÐ¼ ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð°ÑÐ¸Ð¸ Ð½ÐµÑÐºÐ¾Ð»ÑÐºÐ¸Ñ Ð±Ð°Ð·Ð¾Ð²ÑÑ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð². Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ñ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð½ÐµÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½ÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð½Ð° Ð±Ð°Ð·Ðµ Ð¿ÑÐµÐ¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ ÐÐ¸Ð»ÑÐ±ÐµÑÑÐ° Ð¸ Ð¾ÑÐ¸ÑÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð¾Ñ ÑÑÐ¼Ð¾Ð² Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐ°Ð·Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð¥ÑÐ°Ð½Ð³Ð°. ÐÐ¿Ð¸ÑÐ°Ð½Ñ Ð¾ÑÐ½Ð¾Ð²Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð¸ÑÐºÑÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¸Ð½ÑÐµÐ»Ð»ÐµÐºÑÐ° Ð¿ÑÐ¸ ÑÐµÑÐµÐ½Ð¸Ð¸ Ð·Ð°Ð´Ð°Ñ ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð².
Holographic superconductor models in the non-minimal derivative coupling theory
Creators: name: Chen, Songbai
name: Pan, Qiyuan
name: Jing, Jiliang
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a general class of holographic superconductor models via the Stückelberg mechanism in the non-minimal derivative coupling theory in which the charged scalar field is kinetically coupling to Einstein's tensor. We explore the effects of the coupling parameter on the critical temperature, the order of phase transitions and the critical exponents near the second-order phase transition point. Moreover, we compute the electric conductive using the probe approximation and check the ratios $ω_g/T_c$ for the different coupling parameters.
description: 12 pages, 5 figures
Statistical Physics of Elasto-Plastic Steady States in Amorphous Solids: Finite Temperatures and Strain Rates
Creators: name: Karmakar, Smarajit
name: Lerner, Edan
name: Procaccia, Itamar
name: Zylberg, Jacques
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The effect of finite temperature $T$ and finite strain rate $\dotγ$ on the statistical physics of plastic deformations in amorphous solids made of $N$ particles is investigated. We recognize three regimes of temperature where the statistics are qualitatively different. In the first regime the temperature is very low, $T
description: 12 pages, 13 figures
Nakusp Ledge
Creators: name: (:Null)
Publisher: name: Nakusp, B.C. : R.T. Lowery
Year: 2016

description: The Nakusp Ledge was published in Nakusp, in the Central Kootenay region of southeastern British Columbia, from October 1893 to December 1894. The paper was subsequently published as the Ledge both in New Denver, from December 1894 to December 1904, and in Fernie, from January to August 1905. The Ledge was published by Robert Thornton Lowery, a prolific newspaper publisher, editor, and printer who was also widely acclaimed for his skill as a writer. After moving to Fernie, the paper continued to be published under variant titles, including the Fernie Ledger and the District Ledger, from August 1905 to August 1919.
P. Fernando Félix Lopes, O.F.M. (1902-1990)
Creators: name: Araújo, António De Sousa
Publisher: name: Lusitania Sacra
Year: 1990

description: Lusitania Sacra, n. 2 (1990): Pensamento e Obra do Cardeal Cerejeira: no Centenário do seu Nascimento
Additional file 1 of Involvement of NEK2 and its interaction with NDC80 and CEP250 in hepatocellular carcinoma
Creators: name: Zeng, Lu
name: Fan, Xiude
name: Wang, Xiaoyun
name: Deng, Huan
name: Zhang, Xiaoge
name: Zhang, Kun
name: He, Shan
name: Li, Na
name: Han, Qunying
name: Liu, Zhengwen
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Virology

description: Additional file 1. Figure S1: Flow chart of the study and the sample numbers for each data mining part.
Radial distributions of various stellar populations and the evolution of the globular cluster 47 Tucanae
Creators: name: Parada Torres, Javiera Fernanda
Publisher: name: University of British Columbia
Year: 2016

description: Blue stragglers (BSS) are stars whose position in the Color-Magnitude Diagram (CMD) places them above the main sequence turn-off point in a given cluster. Three possible origins have been proposed: stellar collisions, evolution of binary systems, and evolution of hierarchical triples. Using data from the core of 47 Tuc in the ultraviolet (UV), we have identified various stellar populations in the CMD, and used their radial distributions to study the evolution and origin of BSS. When we separate the BSS in two samples divided by their magnitude, we find that the bright BSS show a much more centrally concentrated radial distribution and higher mass estimates, suggesting an origin involving triple or multiple stellar systems. In contrast, the faint BSS are less concentrated, with a radial distribution similar to the main sequence (MS) binaries pointing to this populations as their progenitors. A sample of evolved BSS was found on the UV CMD, this put together with available photometric data and MESA evolutionary models resulted in time scales and number of observed and expected stars agreeing nicely with the BSS having a post-MS evolution comparable to that of a normal star of the same mass and a MS BSS lifetime of about 200-300 Myr. We also find that the extra population of the asymptotic giant branch (AGB) stars in 47 Tuc is due to evolved BSS, with the bulk of the contamination being in the red giant branch bump of the BSS that, according to our models, falls in the same magnitude and color range as the observed AGB bump.
Nuclear Energy and Climate Change
Creators: name: Eapen, Jacob
Publisher: name: Zenodo
Year: 2021
Subjects: subject: climate
subject: climate change
subject: resilience
subject: community engagement
subject: https://zenodo.org/search?q=subject.term%3A%22climate+change%22
subject: https://zenodo.org/search?q=subject.term%3A%22Climate+Change%22

description: Eapen, professor of nuclear engineering, was a presenter in the second lightening round session during the symposium, discussed nuclear energy in the 21st century and a new course being offered in spring 2022 focused on nuclear energy. Eapen described the state of current reactors and the amount of energy they are generating, and the direction of current investments and interests in promoting advanced technologies, such as small modular reactors (SMRs).
Superconductivity in SnO: a Nonmagnetic Analog to Fe-based Superconductors?
Creators: name: Forthaus, M. K.
name: Sengupta, K.
name: Heyer, O.
name: Christensen, N. E.
name: Svane, A.
name: Syassen, K.
name: Khomskii, D. I.
name: Lorenz, T.
name: Abd-Elmeguid, M. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We found that under pressure SnO with alpha-PbO structure, the same structure as in many Fe-based superconductors, e.g. beta-FeSe, undergoes a transition to a superconducting state for p > 6 GPa with a maximum Tc of 1.4 K at p = 9.3 GPa. The pressure dependence of Tc reveals a dome-like shape and superconductivity disappears for p > 16 GPa. It is further shown from band structure calculations that SnO under pressure exhibits a Fermi surface topology similar to that reported for some Fe-based superconductors and that the nesting between the hole and electron pockets correlates with the change of Tc as a function of pressure.
description: 4 pages, 6 figures, as accepted by Phys. Rev. Lett. (in press)
Additional file 5 of Involvement of NEK2 and its interaction with NDC80 and CEP250 in hepatocellular carcinoma
Creators: name: Zeng, Lu
name: Fan, Xiude
name: Wang, Xiaoyun
name: Deng, Huan
name: Zhang, Xiaoge
name: Zhang, Kun
name: He, Shan
name: Li, Na
name: Han, Qunying
name: Liu, Zhengwen
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Virology

description: Additional file 5. Figure S5: The correlation of mRNA expression from cBioPortal database. A. NEK2 vs. NDC80; B. NEK2 vs. CEP250.
Aerial Measurement of Radioxenon Concentration off the West Coast of Vancouver Island following the Fukushima Reactor Accident
Creators: name: Sinclair, L. E.
name: Seywerd, H. C. J.
name: Fortin, R.
name: Carson, J. M.
name: Saull, P. R. B.
name: Coyle, M. J.
name: Van Brabant, R. A.
name: Buckle, J. L.
name: Desjardins, S. M.
name: Hall, R. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Geophysics (physics.geo-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: In response to the Fukushima nuclear reactor accident, on March 20th, 2011, Natural Resources Canada conducted aerial radiation surveys over water just off of the west coast of Vancouver Island. Dose-rate levels were found to be consistent with background radiation, however a clear signal due to Xe-133 was observed. Methods to extract Xe-133 count rates from the measured spectra, and to determine the corresponding Xe-133 volumetric concentration, were developed. The measurements indicate that Xe-133 concentrations on average lie in the range of 30 to 70 Bq/m3.
description: 14 pages, 5 figures, accepted for publication in Journal of Environmental Radioactivity
3. Workshop des RDCnet: Pilotnetzwerk
Creators: name: Murray, Neil
name: Goebel, Jan
Publisher: name: Zenodo
Year: 2023
Subjects: Forschungsdateninfrastruktur
Remote Access
Gastwissenschaftler*innen Arbeitsplätze
Forschungsdatenzugang
Sensible Forschungsdaten

description: Im dritten Workshop des RDCnet wurde die Strategie und der Prozess für die Umsetzung des Pilotnetzwerks des RDCnet vorgestellt und mit den Partner-FDZ diskutiert, so dass das Netzwerk strukturiert und standardisiert aufgebaut werden kann. Ziel des RDCnet ist die multilaterale Vernetzung von Gastwissenschaftler*innen Arbeitsplätzen verschiedener im KonsortSWD akkreditierter Forschungsdatenzentren. So können Forscher auf sensible Daten zugreifen - unabhängig davon, an welchem GWAP sie gerade arbeiten. Bevor das RDCnet in Betrieb gehen kann, werden im Rahmen des Pilotnetzwerks die Verbindungen zwischen den beteiligten Datenzentren definiert und getestet.
Persistent contribution of unbound quasiparticles to the pair correlation in continuum Skyrme-Hartree-Fock-Bogoliubov approach
Creators: name: Zhang, Ying
name: Matsuo, Masayuki
name: Meng, Jie
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The neutron pair correlation in nuclei near the neutron drip-line is investigated using the selfconsistent continuum Skyrme-Hartree-Fock-Bogoliubov theory formulated with the coordinate-space Green's function technique. Numerical analysis is performed for even-even N = 86 isotones in the Mo-Sn region, where the 3p3/2 and 3p1/2 orbits lying near the Fermi energy are either weakly bound or unbound. The quasiparticle states originating from the l = 1 orbits form resonances with large widths, which are due to the low barrier height and the strong continuum coupling caused by the pair potential. Analyzing in detail the pairing properties and roles of the quasiparticle resonances, we found that the l = 1 broad quasiparticle resonances persist to feel the pair potential and contribute to the pair correlation even when their widths are comparable with the resonance energy.
TERRORISM AND IGNORANCE
Creators: name: Selami, YESILYURT
Publisher: name: Zenodo
Year: 2023
Subjects: Terrorism, ignorance, national and moral values, school, teacher, reasoning

description: In this study, the relationship between terrorism and ignorance is discussed. As it is known, terrorism, which has emerged with different types and methods from the past to the present, has created and continues to pose a great danger to individuals and states. Terrorism is a method used to achieve a certain aim, a course of action, a means to an end. The targets of covert perpetrators of terrorism are individuals who perceive themselves as victims. First they ensnare individuals, then they make them feel valued by stroking their ego. Then by giving them a goal, they show them a way to struggle with the society they are alienated from. While drawing the framework of this movement, they use the ideological discourses they have created by establishing a link between the past and the future. Everything runs according to a plan. The emerging danger, on the other hand, has the potential to destroy societies. For that reason states should find a solution against this with common sense. At this point, terrorism can be considered as a disease and individuals should be protected from falling into the trap of this disease. Sometimes the remedy can be found in neutralizing the individuals who have the disease. However, this remedy is similar to killing mosquitoes. You medicate your house, and they die, but somehow they will come back. Yet there is a source that causes them to reproduce, and it is precisely there that must be eliminated. With a similar logic, there must be a source that causes an increase in the number of individuals afflicted with the disease of terrorism. In our opinion, this source is ignorance and its elimination is essential. Do not be misunderstood, by the expression of ignorance here, we do not mean that the individual is illiterate or did not go to university. The proof is the individuals who are involved in terrorism even though they are university graduates. What we mean by ignorance is that the individual does not know/internalize his culture, concepts belonging to this culture, manners, morality, brotherhood, love, self-sacrifice, right and wrong, in short, our national and spiritual values that make us who we are. The establishment of these values begins in the family and continues with the social environment and school. Schools should not be seen as institutions where individuals should improve themselves only academically. In fact, these institutions are the most suitable places for individuals to be equipped with both academic and national and spiritual values. However, success is possible with patriotic teachers who are experts in their fields and equipped with national and moral values.
Magnetic Structure of Rapidly Rotating FK Comae-Type Coronae
Creators: name: Cohen, O.
name: Drake, J. J.
name: Kashyap, V. L.
name: Korhonen, H.
name: Elstner, D.
name: Gombosi, T. I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a three-dimensional simulation of the corona of an FK Com-type rapidly rotating G giant using a magnetohydrodynamic model that was originally developed for the solar corona in order to capture the more realistic, non-potential coronal structure. We drive the simulation with surface maps for the radial magnetic field obtained from a stellar dynamo model of the FK Com system. This enables us to obtain the coronal structure for different field topologies representing different periods of time. We find that the corona of such an FK Com-like star, including the large scale coronal loops, is dominated by a strong toroidal component of the magnetic field. This is a result of part of the field being dragged by the radial outflow, while the other part remains attached to the rapidly rotating stellar surface. This tangling of the magnetic field,in addition to a reduction in the radial flow component, leads to a flattening of the gas density profile with distance in the inner part of the corona. The three-dimensional simulation provides a global view of the coronal structure. Some aspects of the results, such as the toroidal wrapping of the magnetic field, should also be applicable to coronae on fast rotators in general, which our study shows can be considerably different from the well-studied and well-observed solar corona. Studying the global structure of such coronae should also lead to a better understanding of their related stellar processes, such as flares and coronal mass ejections, and in particular, should lead to an improved understanding of mass and angular momentum loss from such systems.
description: Accepted to ApJ, 10 pages, 6 figures
Entanglement Property and Monogamy Relation of Gerneralized Mixed W
Creators: name: Zhao, Ming-Jing
name: Fei, Shao-Ming
name: Wang, Zhi-Xi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a new class of multipartite entangled mixed states with pure state decompositions of generalized W states, similar to Schmidt-correlated states having generalized GHZ states in the pure state decomposition. The entanglement and separability properties are studied according to PPT operations. Monogamy relations linked to these states are also investigated.
description: 8 pages
Isospin-Violating Dark Matter and Neutrinos From the Sun
Creators: name: Chen, Shao-Long
name: Zhang, Yue
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the indirect detection of dark matter through neutrino flux from their annihilation in the center of the Sun, in a class of theories where the dark matter-nucleon spin-independent interactions break the isospin symmetry. We point out that, while the direct detection bounds with heavy targets like Xenon are weakened and reconciled with the positive signals in DAMA and CoGeNT experiments, the indirect detection using neutrino telescopes can impose a relatively stronger constraint and brings tension to such explanation, if the annihilation is dominated by heavy quark or $τ$-lepton final states. As a consequence, the qualified isospin violating dark matter candidate has to preferably annihilate into light flavors.
description: 5 pages, 3 figures, 1 table
$Z_Q$ Topological Invariants for Polyacetylene, Kagome and Pyrochlore lattices
Creators: name: Hatsugai, Y.
name: Maruyama, I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Adiabatic $Z_Q$ invariants by quantized Berry phases are defined for gapped electronic systems in $d$-dimensions ($Q=d+1$). This series includes Polyacetylene, Kagome and Pyrochlore lattice respectively for $d=1,2$ and 3. The invariants are quantum $Q$-multimer order parameters to characterize the topological phase transitions by the multimerization. This fractional quantization is protected by the global $Z_Q$ equivalence. As for the chiral symmetric case, a topological form of the $Z_2$-invariant is explicitly given as well.
description: 4 pgages, 4 figures
A juxtaposition of worldviews : how emerging regenerative frameworks can be enriched by Plains Cree ways of knowing
Creators: name: Lwanga-Thomson, Amanda
Publisher: name: University of British Columbia
Year: 2016

description: Proponents of regenerative design and development have attempted to adopt Indigenous philosophies and sacred teachings into their research and publications. Though well intentioned, merely using quotations from Indigenous people does not constitute a culturally sensitive approach to learning from Indigenous ways of knowing. Even though some founding theories draw on Indigenous ways of knowing, existing regenerative frameworks do not explicitly take a holistic approach to exploring the worldviews, values, processes and practices, which are the basis of Indigenous teachings. Without acknowledging how Indigenous knowledges were formed and how subsequent processes and practices have been shaped, regenerative researchers leave themselves in a position to be criticized for oversimplifying, tokenizing or romanticizing aspects of Indigenous ways of knowing by a-contextually attempting to adopt Indigenous teaching into their methodologies. A thorough and careful exploration of the intersecting worldviews, values, processes and practices between Indigenous ways of knowing and regenerative methodologies has not previously been undertaken. In this thesis I endeavour to answer the following questions. First, what commonalities or nuanced differences exist between the worldviews, values, processes and practices of Plains Cree and regenerative practitioners? Second, to what extent can emerging regenerative frameworks, be enriched by Plains Cree ways of knowing? In response to the research questions six recommendations were established which address the following topics: 1. Articulating the community’s worldview; 2. Planning for changing contexts; 3. Using human experiences to validate scientific data; 4. Maintaining balance through reciprocity; 5. Transforming interconnections into synergies; and 6. Looking beyond scientific and “professional” roles. The lessons learned from this research will have the potential to reshape how practitioners and other community participants use regenerative tools and shift who participates in the regenerative process.
Chaotic dynamics of thermal atoms in labyrinths created by optical lattices
Creators: name: Pérez-Pascual, R.
name: Rodríguez-Lara, B. M.
name: Jáuregui, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dynamics of non interacting thermal atoms embedded in structured optical lattices with non trivial geometry. The lattice would be generated by two counter propagating modes with parabolic cylindrical symmetry and we concentrate on the quasi conservative red detuned far-off-resonance regime. The system exhibits quasi periodic and chaotic behaviors whose probability can be controlled by varying the intensity of the beams. The spectral density of the trajectories is used as a chaos signature. An analysis of permanency times for chaotic trajectories that visit more than one potential well reveals a distribution with a long tail.
description: 15 pages, 10 figures
Azimuthal anisotropy of neutral pion production in Au+Au collisions at sqrt(s_NN) = 200 GeV: Path-length dependence of jet quenching and the role of initial geometry
Creators: name: The PHENIX Collaboration
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have measured the azimuthal anisotropy of pi0's for 1 < pT < 18 GeV/c for Au+Au collisions at sqrt s_NN = 200 GeV. The observed anisotropy shows a gradual decrease in 3 < pT < 7 - 10 GeV/c, but remains positive beyond 10 GeV/c. The magnitude of this anisotropy is under-predicted, up to at least 10 GeV/c, by current perturbative QCD (pQCD) energy-loss model calculations. An estimate of the increase in anisotropy expected from initial-geometry modification due to gluon saturation effects and initial-geometry fluctuations is insufficient to account for this discrepancy. Calculations which implement a path length dependence steeper than what is implied by current pQCD energy-loss models, show reasonable agreement with the data.
description: 384 authors, 6 pages text, 3 figures. Submitted to Phys. Rev. Lett. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html
Untersuchung der Kathoden- und Haltergeometrie einer RF-Elektronenquelle aufgrund des Rogowski-Profils
Creators: name: Mewes, Mathis
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2018

description: Bachelorarbeit, University of Hamburg, 2018; 51 pp. (2018). = Bachelorarbeit, University of Hamburg, 2018
description: The aim of this thesis was to reduce the electrical field strength at the opening of a gap between the cathode and the resonator cavity of the radio frequency electron gun of the European X-FEL. For this purpose computer simulations of the electromagnetic field inside a 3D-model of the electron gun were carried out for different edge profiles at the gap opening. While several profile types were tested the examination focuses on the Rogowski Profile.A reduction in the electrical field peaks occurring at the edges of the gap could reduce the risk of electrical discharges. In the case of the electron gun of the European X-FEL which was used for the simulation the most concern is caused by a dark current with the potential to damage parts of the accelerator. The desired reduction of the electric field peaks is likely to reduce the dark current. While the risk of electrical breakdowns is also reduced those are only of secondary concern.In the simulations the Rogowski Profile achieved a reduction of the maximal field strength at the gap by up to 20% in comparison to the geometry currently used in the European X-FEL. Secondary effects of the Rogowski Profile were also examined to ensure the quality of the electron beam and the resonant frequency of the gun cavity. The results do not cause concern for the electron beam quality. Further examination of the resonance with more precise simulations are recommended so the gun cavity can be adjusted to compensate the change.
TORCH: Time of Flight Identification with Cherenkov Radiation
Creators: name: Charles, M. J.
name: Forty, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: TORCH is a time-of-flight detector concept using Cherenkov light to provide charged particle identification up to 10 GeV/c. The concept and design are described and performance in simulation is quantified.
description: 4 pages, 3 figures, proceedings of RICH2010 to be published in Nucl. Instrum. Meth. A
High-$κ$ field-effect transistor with copper-phthalocyanine
Creators: name: Roth, F.
name: Huth, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The use of SrTiO$_3$ dielectrics as high-permittivity insulator in organic thin film field effect transistors (FET) is evaluated. Field-effect transistors with sputtered SrTiO$_3$ and copper-phthalocyanine (CuPc) as semiconducting layer were fabricated. The device preparation was performed in-situ in an ultra high vacuum chamber system. The dielectric in the transistors had a permittivity of up to 200 which led to low driving voltages of 3 V. The field effect transistors were p-type and reached mobilities of about $μ= 1.5\times 10^{-3}$ cm$^2$/Vs and an on/off ratio of $10^3$. These properties are compared to devices based on other dielectric materials.
description: 9 pages, 6 figures
Manuel Gonçalves Cerejeira e os estudos humanísticos em Portugal
Creators: name: Martins, José Vitorino De Pina
Publisher: name: Lusitania Sacra
Year: 1990

description: Lusitania Sacra, n. 2 (1990): Pensamento e Obra do Cardeal Cerejeira: no Centenário do seu Nascimento
Minimum Requirements for Detecting a Stochastic Gravitational Wave Background Using Pulsars
Creators: name: Cordes, J. M.
name: Shannon, R. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We assess the detectability of a nanohertz gravitational wave (GW) background with respect to additive red and white noise in the timing of millisecond pulsars. We develop detection criteria based on the cross-correlation function summed over pulsar pairs in a pulsar timing array. The distribution of correlation amplitudes is found to be non-Gaussian and highly skewed, which significantly influences detection and false-alarm probabilities. When only white noise and GWs contribute, our detection results are consistent with those found by others. Red noise, however, drastically alters the results. We discuss methods to meet the challenge of GW detection ("climbing mount significance") by distinguishing between GW-dominated and red or white-noise limited regimes. We characterize detection regimes by evaluating the number of millisecond pulsars that must be monitored in a high-cadence, 5-year timing program for a GW background spectrum $h_c(f) = A f^{-2/3}$ with $A = 10^{-15}$ yr$^{-2/3}$. Unless a sample of 20 super-stable millisecond pulsars can be found --- those with timing residuals from red-noise contributions $σ_r \lesssim 20$ ns --- a much larger timing program on $\gtrsim 50 - 100$ MSPs will be needed. For other values of $A$, the constraint is $σ_r \lesssim 20 {\rm ns} (A/10^{-15} {\rm yr}^{-2/3})$. Identification of suitable MSPs itself requires an aggressive survey campaign followed by characterization of the level of spin noise in the timing residuals of each object. The search and timing programs will likely require substantial fractions of time on new array telescopes in the southern hemisphere as well as on existing ones.
description: Submitted to the Astrophysical Journal
Geometric quenches in quantum integrable systems
Creators: name: Mossel, Jorn
name: Palacios, Guillaume
name: Caux, Jean-Sébastien
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the generic problem of suddenly changing the geometry of an integrable, one-dimensional many-body quantum system. We show how the physics of an initial quantum state released into a bigger system can be completely described within the framework of the Algebraic Bethe Ansatz, by providing an exact decomposition of the initial state into the eigenstate basis of the system after such a geometric quench. Our results, applicable to a large class of models including the Lieb-Liniger gas and Heisenberg spin chains, thus offer a reliable framework for the calculation of time-dependent expectation values and correlations in this nonequilibrium situation.
description: 8 pages
Random Block Operators
Creators: name: Kirsch, Werner
name: Metzger, Bernd
name: Müller, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study fundamental spectral properties of random block operators that are common in the physical modelling of mesoscopic disordered systems such as dirty superconductors. Our results include ergodic properties, the location of the spectrum, existence and regularity of the integrated density of states, as well as Lifshits tails. Special attention is paid to the peculiarities arising from the block structure such as the occurrence of a robust gap in the middle of the spectrum. Without randomness in the off-diagonal blocks the density of states typically exhibits an inverse square-root singularity at the edges of the gap. In the presence of randomness we establish a Wegner estimate that is valid at all energies. It implies that the singularities are smeared out by randomness, and the density of states is bounded. We also show Lifshits tails at these band edges. Technically, one has to cope with a non-monotone dependence on the random couplings.
description: 22 pages, 3 figures
Spin Drag in Ultracold Fermi Mixtures with Repulsive Interactions
Creators: name: Duine, R. A.
name: Polini, Marco
name: Raoux, Arnaud
name: Stoof, H. T. C.
name: Vignale, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We calculate the spin-drag relaxation rate for a two-component ultracold atomic Fermi gas with positive scattering length between the two spin components. In one dimension we find that it vanishes linearly with temperature. In three dimensions the spin-drag relaxation rate vanishes quadratically with temperature for sufficiently weak interactions. This quadratic temperature dependence is present, up to logarithmic corrections, in the two-dimensional case as well. For stronger interaction the system exhibits a Stoner ferromagnetic phase transition in two and three dimensions. We show that the spin-drag relaxation rate is enhanced by spin fluctuations as the temperature approaches the critical temperature of this transition from above.
description: Submitted to New Journal of Physics Focus Issue "Strongly Correlated Quantum Fluids: From Ultracold Quantum Gases to QCD Plasmas"