cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Channel covariance, twirling, contraction, and some upper bounds on the quantum capacity
Creators: name: Ouyang, Yingkai
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Evaluating the quantum capacity of quantum channels is an important but difficult problem, even for channels of low input and output dimension. Smith and Smolin showed that the quantum capacity of the Clifford-twirl of a qubit amplitude damping channel (a qubit depolarizing channel) has a quantum capacity that is at most the coherent information of the qubit amplitude damping channel evaluated on the maximally mixed input state. We restrict our attention to obtaining upper bounds on the quantum capacity using a generalization of Smith and Smolin's degradable extension technique. Given a degradable channel $\mathcal N$ and a finite projective group of unitaries $\mathcal V$, we show that the $\mathcal V$-twirl of $\mathcal N$ has a quantum capacity at most the coherent information of $\mathcal N$ maximized over a $\mathcal V$-contracted space of input states. As a consequence, degradable channels that are covariant with respect to diagonal Pauli matrices have quantum capacities that are their coherent information maximized over just the diagonal input states. As an application of our main result, we supply new upper bounds on the quantum capacity of some unital and non-unital channels -- $d$-dimensional depolarizing channels, two-qubit locally symmetric Pauli channels, and shifted qubit depolarizing channels.
description: 33 pages, 3 figures. Title changed with slight revisions and to appear in QIC
Optimierung des Lehrbuchbestandes durch detaillierte Nutzungsstatistiken
Creators: name: Knüttel, Helge
name: Deinzer, Gernot
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: Lehrbücher, Nutzungsstatistik, textbooks, usage statistics
subject: 020 Bibliotheks- und Informationswissenschaft

description: Wir berichten hier, wie es der Teilbibliothek Medizin der Universitätsbibliothek Regensburg mit Hilfe von automatisch gewonnenen, detaillierten Nutzungsstatistiken und einer bequemen, webbasierten Oberfläche für den Fachreferenten gelang, den Lehrbuchbestand angesichts limitierter Finanzmittel zu optimieren. Dieses System wurde sukzessive auch an anderen Teilbibliotheken der Universitätsbibliothek Regensburg erfolgreich eingesetzt. Begleitend zu dieser Publikation wird der Quelltext des Systems unter einer Open-Source-Lizenz verfügbar gemacht. Dies ist das erste, uns bekannte System, dass aus dem integrierten Bibliothekssystem Statusangaben der Ausleihe in Zeitreihen sammelt, zu Kennzahlen für die Benutzung aufbereitet und zur mühelosen Nutzung bereitstellt. We report how the Medical Branch Library of University Library of Regensburg achieved to optimize its textbook holdings by using automatically harvested detailed usage statistics with an easy-to-use web-based interface. Subsequently, this system was successfully adopted by other branch libraries. Accompanying this paper the software is made available under an open source license. This is the first system known to us that extracts time series of usage status data from an integrated library system and makes these data available for effortless access in a comprehensive manner.
description: Das in diesem Artikel vorgestellte Projekt wurde auf der AGMB-Jahrestagung in Berlin 2013 mit dem 1. Preis des AGMB-Wettbewerbs 2013 "Leuchtturmprojekte an Medizinbibliotheken" ausgezeichnet.
title: Submitral left ventricular aneurysms: Role of MDCT and cardiac MRI in the complete assessment and guiding their management.
Creators: name: Malhi, Amarinder
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Diverticula
subject: Imaging sequences
subject: MR
subject: CT
subject: Cardiac

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To describe the role of MDCT and Cardiac MRI in the complete evaluation of submitral left ventricular aneurysm, their differential diagnosis,associated complications. To assess the role of imaging in guiding their...
title: Role of cardiac MRI T1 and T2 mapping in the evaluation of cardiac masses
Creators: name: Malhi, Amarinder
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cancer
subject: Diagnostic procedure
subject: MR
subject: Cardiac

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: 1. Role of MRI in characterization of cardiac masses by T1 and T2 mapping. 2 .T1 and T2 mapping values of different cardiac masses. 3. Differential diagnosis of cardiac masses by T1 and T2 mapping values. Cardiac tumors are a relatively rare, with a...
Marked differentiation in a new species of dwarf stonebasher, Pollimyrus cuandoensis sp. nov. (Mormyridae: Teleostei), from a contact zone with two sibling species of the Okavango and Zambezi rivers
Creators: name: Kramer, Bernd
name: van der Bank, Herman
name: Wink, Michael
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: speciation, parapatric, cline, hybridization, electric organ discharge, DNA sequence analysis, genomic fingerprinting
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: We studied the systematic status of a form of Pollimyrus of the lower Kwando River that is flanked by the Okavango River, inhabited by Pollimyrus castelnaui (Boulenger, 1911), and the Zambezi River, inhabited by Pollimyrus marianne Kramer et al., 2003. In morphology and electric organ discharges (EODs), the Kwando phenotype proved well differentiated from both P. castelnaui and P. marianne. Sequence analysis of the cyt b gene confirmed that the three forms or species form a monophyletic clade, with P. castelnaui sister to the other two species. Genomic fingerprinting with ISSR-PCR confirmed differentiation of the Kwando form, that we recognize as a different species, P. cuandoensis sp. nov., from its sister species, P. marianne. A considerable amount of EOD and morphological variation was revealed among samples of P. cuandoensis sp. nov. from four different locations on the lower Kwando River, possibly due to hybrid introgression. This seems an ideal system for testing theories of parapatric speciation. http://www.zoobank.org/urn:lsid:zoobank.org:pub:FB644B21-04F6-44F8-AEB6-8DC09268C17C
title: Role of cardiac MRI T1 and T2 mapping in the assessment of infiltrative cardiomyopathies
Creators: name: Malhi, Amarinder
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cardiac
subject: MR
subject: Imaging sequences
subject: Tissue characterisation

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: 1. Role of MRI in the characterization of infiltrative cardiomyopathies 2. Differential diagnosis of different infiltrative cardiomyopathies by T1 and T2 mapping values. Magnetic resonance imaging (MRI) provides an excellent assessment of function...
The Weyl expansion for systems of independent identical particles
Creators: name: Hummel, Quirin
name: Urbina, Juan Diego
name: Richter, Klaus
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: 530 Physik

description: We present a novel analytical approach for the calculation of the mean density of states in many-body systems consisting of confined indistinguishable and independent particles. Our method makes explicit the intrinsic geometry inherent in the symmetrization postulate. In the spirit of the usual Weyl expansion for the smooth part of the density of states in confined single-particle systems, our results take the form of a sum over clusters of particles moving freely around manifolds in configuration space invariant under permutations. In our approach the emergence of the fermionic ground state is a consequence of a delicate cancellation effect of cluster contributions. As an asymptotic expansion, our approximation gives increasingly better results for large excitation energies, and we show that it coincides with the Bethe estimate in the appropriate region. Moreover, our construction gives the correct high-energy asymptotics expected from general considerations. Our expansion in cluster zones is naturally incorporated for systems of interacting particles, opening an alternative road to address the interplay between symmetry, confinement and interactions in many-body systems of identical bosonic or fermionic particles.
Neuronatin in a subset of glioblastoma multiforme tumor progenitor cells is associated with increased cell proliferation and shorter patient survival
Creators: name: Xu, David S.
name: Yang, Chunzhang
name: Proescholdt, Martin A.
name: Bründl, Elisabeth
name: Brawanski, Alexander
name: Fang, Xueping
name: Lee, Cheng S.
name: Weil, Robert J.
name: Zhuang, Zhengping
name: Lonser, Russell R.
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: 610 Medizin
subject: Biological Markers/metabolism
subject: Cell Proliferation
subject: Chromatography, Liquid
subject: Glioblastoma/metabolism
subject: Humans
subject: Isoelectric Focusing
subject: Kaplan-Meier Estimate
subject: Membrane Proteins/metabolism
subject: Neoplastic Stem Cells/metabolism
subject: Nerve Tissue Proteins/metabolism
subject: Protein Isoforms/metabolism
subject: Proteomics/methods
subject: Tandem Mass Spectrometry

description: Glioblastoma multiforme is the most common and malignant primary brain tumor. Recent evidence indicates that a subset of glioblastoma tumor cells have a stem cell like phenotype that underlies chemotherapy resistance and tumor recurrence. We utilized a new "multidimensional" capillary isoelectric focusing nano-reversed-phase liquid chromatography platform with tandem mass spectrometry to compare the proteomes of isolated glioblastoma tumor stem cell and differentiated tumor cell populations. This proteomic analysis yielded new candidate proteins that were differentially expressed. Specifically, two isoforms of the membrane proteolipid neuronatin (NNAT) were expressed exclusively within the tumor stem cells. We surveyed the expression of NNAT across 10 WHO grade II and III gliomas and 23 glioblastoma (grade IV) human tumor samples and found NNAT was expressed in a subset of primary glioblastoma tumors. Through additional in vitro studies utilizing the U87 glioma cell line, we found that expression of NNAT is associated with significant increases in cellular proliferation. Paralleling the in vitro results, when NNAT levels were evaluated in tumor specimens from a consecutive cohort of 59 glioblastoma patients, the presence of increased levels of NNAT were found to be a an independent risk factor (P = 0.006) for decreased patient survival through Kaplan-Meier and multivariate analysis. These findings indicate that NNAT may have utility as a prognostic biomarker, as well as a cell-surface target for chemotherapeutic agents.
Regularity of quasi-symbolic and bracket powers of Borel type ideals
Creators: name: Cimpoeas, Mircea
Publisher: name: arXiv
Year: 2011
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13P10, 13E10

description: In this paper, we show that the regularity of the q-th quasi-symbolic power $I^{((q))}$ and the regularity of the $q$-th bracket power $I^{[q]}$ of a monomial ideal of Borel type $I$, satisfy the relations $reg(I^{((q))})\leq q \cdot reg(I)$, respectively $reg(I^{[q]})\geq q\cdot reg(I)$. Also, we give an upper bound for $reg(I^{[q]})$.
description: 8 pages, to appear in Romanian Journal of Mathematics and Computer Science
Fixing the Energy Scale in Scanning Tunneling Microscopy on Semiconductor Surfaces
Creators: name: Münnich, Gerhard
name: Donarini, Andrea
name: Wenderoth, Martin
name: Repp, Jascha
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: Resonant tunneling, III-V Semiconductors, impurity and defect levels, Metal-insulator-semiconductor structures
subject: 530 Physik
subject: 73.40.Gk
subject: 71.55.Eq
subject: 73.20.-r
subject: 73.40.Qv

description: In scanning tunneling experiments on semiconductor surfaces, the energy scale within the tunneling junction is usually unknown due to tip-induced band bending. Here, we experimentally recover the zero point of the energy scale by combining scanning tunneling microscopy with Kelvin probe force spectroscopy. With this technique, we revisit shallow acceptors buried in GaAs. Enhanced acceptor-related conductance is observed in negative, zero, and positive band-bending regimes. An Anderson-Hubbard model is used to rationalize our findings, capturing the crossover between the acceptor state being part of an impurity band for zero band bending and the acceptor state being split off and localized for strong negative or positive band bending, respectively.
Seeing, Wind and Outer Scale Effects on Image Quality at the Magellan Telescopes
Creators: name: Floyd, David J. E.
name: Thomas-Osip, Jo
name: Prieto, Gabriel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present an analysis of the science image quality obtained on the twin 6.5 metre Magellan telescopes over a 1.5 year period, using images of ~10^5 stars. We find that the telescopes generally obtain significantly better image quality than the DIMM-measured seeing. This is qualitatively consistent with expectations for large telescopes, where the wavefront outer scale of the turbulence spectrum plays a significant role. However, the dominant effect is found to be wind speed with Magellan outperforming the DIMMs most markedly when the wind is strongest. Excluding data taken during strong wind conditions (>10 m/s), we find that the Magellan telescopes still significantly outperform the DIMM seeing, and we estimate the site to have L_0 ~ 25 m on average. We also report on the first detection of a negative bias in DIMM data. This is found to occur, as predicted, when the DIMM is affected by certain optical aberrations and the turbulence profile is dominated by the upper layers of the atmosphere.
description: Accepted for publication in PASP. 10 pages, 12 figures.
Columbia Daily Spectator, 2/28/69
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2016
Subjects: College student newspapers and periodicals

description: The Columbia Daily Spectator. 28 February 1969, pages 1-6. Includes article titled "Cordier Will Ask Trustees to Abandon Gym Site; SDS Stages Anti-ROTC Sit-ins in Hamilton, Dodge; SAS Presents Plan for Autonomous Black Institute"
High-Grade Glioma: Refined Diagnostics Steering Stratified Therapy
Creators: name: Uhl, M.
name: Hau, Peter
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: Glioblastoma; Histology; MRI
subject: 610 Medizin

description: An adequately sampled tumor histology that is evaluated by an experienced neuropathologist is the current international standard for the diagnosis of high-grade gliomas. We present the case of a 30-year-old female for whom clinical and radiological information dramatically changed the histological diagnosis. We suggest a new algorithm including these parameters to refine the accuracy of histological diagnosis both for standard treatment and centrally reviewed clinical trials.
Holographic entanglement entropy: near horizon geometry and disconnected regions
Creators: name: Tonni, Erik
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the finite term of the holographic entanglement entropy for the charged black hole in AdS(d+2) and other examples of black holes when the spatial region in the boundary theory is given by one or two parallel strips. For one large strip it scales like the width of the strip. The divergent term of its expansion as the turning point of the minimal surface approaches the horizon is determined by the near horizon geometry. Examples involving a Lifshitz scaling are also considered. For two equal strips in the boundary we study the transition of the mutual information given by the holographic prescription. In the case of the charged black hole, when the width of the strips becomes large this transition provides a characteristic finite distance depending on the temperature.
description: 29 pages, 7 figures
Spin conductance of diffusive graphene nanoribbons: A probe of zigzag edge magnetization
Creators: name: Bundesmann, Jan
name: Liu, Ming-Hao
name: Adagideli, İnanç
name: Richter, Klaus
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: 530 Physik
subject: 73.23.-b
subject: 72.25.-b
subject: 72.80.Vp

description: We investigate spin transport in diffusive graphene nanoribbons with both clean and rough zigzag edges, and long-range potential fluctuations. The long-range fields along the ribbon edges cause the local doping to come close to the charge neutrality point forming p-n junctions with localized magnetic moments, similar to the predicted magnetic edge of clean zigzag graphene nanoribbons. The resulting random edge magnetization polarizes charge currents and causes sample-to-sample fluctuations of the spin currents obeying universal predictions. We show furthermore that, although the average spin conductance vanishes, an applied transverse in-plane electric field can generate a finite spin conductance. A similar effect can also be achieved by aligning the edge magnetic moments through an external magnetic field.
On the quantum 'ax+b'group
Creators: name: Stachura, Piotr
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 81R50 (Primary), 46L65 (Secondary)

description: The more detailed description of the quantum 'ax+b' group of Baaj and Skandalis is presented. In particular we give generators and present formulae for action of the comultiplication on them; it is also shown that this group is a quantization of a Poisson-Lie structure on a classical 'ax+b' group.
description: This is the final version as it appeared in Journal of Geometry and Physics
title: ЭКОЛОГИЧЕСКИЕ ФАКТОРЫ, ВЛИЯЮЩИЕ НА БЕЗОПАСНОСТЬ МЯСНОГО СЫРЬЯ
Creators: name: Забашта, Николай Николаевич
name: Головко, Елена Николаевна
name: Синельщикова, Ирина Алексеевна
name: Андросова, Анастасия Николаевна
name: Быченко, Наталья Владимировна
Publisher: name: ФГБНУ КНЦЗВ
Year: 2021

description: В статье представлены данные мониторинга по накоплению токсичных элементов в цепи «почва – растение – корма – мясо сельскохозяйственных животных» для обеспечения безопасности мясного сырья, поступающего из экологически безопасной сырьевой зоны на «Филиал «ЗДМК «Тихорецкий» АО «ДАНОН РОССИЯ» для выработки продуктов детского питания на мясной основе.
Large-scale optimization algorithms for missing data completion and inverse problems
Creators: name: Da Silva, Curt
Publisher: name: University of British Columbia
Year: 2017

description: Inverse problems are an important class of problems found in many areas of science and engineering. In these problems, one aims to estimate unknown parameters of a physical system through indirect multi-experiment measurements. Inverse problems arise in a number of fields including seismology, medical imaging, and astronomy, among others. An important aspect of inverse problems is the quality of the acquired data itself. Real-world data acquisition restrictions, such as time and budget constraints, often results in measured data with missing entries. Many inversion algorithms assume that the input data is fully sampled and relatively noise free and produce poor results when these assumptions are violated. Given the multidimensional nature of real-world data, we propose a new low-rank optimization method on the smooth manifold of Hierarchical Tucker tensors. Tensors that exhibit this low-rank structure can be recovered from solving this non-convex program in an efficient manner. We successfully interpolate realistically sized seismic data volumes using this approach. If our low-rank tensor is corrupted with non-Gaussian noise, the resulting optimization program can be formulated as a convex-composite problem. This class of problems involves minimizing a non-smooth but convex objective composed with a nonlinear smooth mapping. In this thesis, we develop a level set method for solving composite-convex problems and prove that the resulting subproblems converge linearly. We demonstrate that this method is competitive when applied to examples in noisy tensor completion, analysis-based compressed sensing, audio declipping, total-variation deblurring and denoising, and one-bit compressed sensing. With respect to solving the inverse problem itself, we introduce a new software design framework that manages the cognitive complexity of the various components involved. Our framework is modular by design, which enables us to easily integrate and replace components such as linear solvers, finite difference stencils, preconditioners, and parallelization schemes. As a result, a researcher using this framework can formulate her algorithms with respect to high-level components such as objective functions and hessian operators. We showcase the ease with which one can prototype such algorithms in a 2D test problem and, with little code modification, apply the same method to large-scale 3D problems.
Combinatorial theory of the semiclassical evaluation of transport moments II: Algorithmic approach for moment generating functions
Creators: name: Berkolaiko, Gregory
name: Kuipers, Jack
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: 510 Mathematik
subject: 530 Physik

description: Electronic transport through chaotic quantum dots exhibits universal behaviour which can be understood through the semiclassical approximation. Within the approximation, transport moments reduce to codifying classical correlations between scattering trajectories. These can be represented as ribbon graphs and we develop an algorithmic combinatorial method to generate all such graphs with a given genus. This provides an expansion of the linear transport moments for systems both with and without time reversal symmetry. The computational implementation is then able to progress several orders higher than previous semiclassical formulae as well as those derived from an asymptotic expansion of random matrix results. The patterns observed also suggest a general form for the higher orders.
Examples of nonpolygonal limit shapes in i.i.d. first-passage percolation and infinite coexistence in spatial growth models
Creators: name: Damron, Michael
name: Hochman, Michael
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We construct an edge-weight distribution for i.i.d. first-passage percolation on $\mathbb{Z}^2$ whose limit shape is not a polygon and whose extreme points are arbitrarily dense in the boundary. Consequently, the associated Richardson-type growth model can support coexistence of a countably infinite number of distinct species, and the graph of infection has infinitely many ends.
description: Published in at http://dx.doi.org/10.1214/12-AAP864 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
East–west differentiation in the Marcusenius macrolepidotus species complex in Southern Africa: the description of a new species for the lower Cunene River, Namibia (Teleostei: Mormyridae)
Creators: name: Kramer, Bernd
name: Wink, Michael
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: systematics, morphometrics, electric organ discharges, molecular genetics, allopatric speciation
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: This paper critically compares the Southern African bulldog fish species Marcusenius macrolepidotus (Peters, 1852), inhabiting the eastern Lower Zambezi River, and Marcusenius altisambesi Kramer et al., 2007, inhabiting the central Upper Zambezi River, with bulldog fish samples from the western lower Cunene River, a 2600-km range from the Indian Ocean to the Atlantic. The three species or forms are well differentiated in morphology and molecular genetics, and differentiation is also present in electric organ discharges. Marcusenius altisambesi and the Cunene sample, which we recognize as Marcusenius multisquamatus sp. nov., are closely related and form a sister taxon to M. macrolepidotus. This result is based on the analysis of mitochondrial cytochrome b sequences and genomic Inter-simple-sequence-repeat fingerprinting. Morphological adaptations to life in a torrential escarpment river seem to be present in M. multisquamatus sp. nov. when compared with M. altisambesi, which lives in a reservoir river that periodically floods the savannah. http://www.zoobank.org/urn:lsid:zoobank.org:pub:8FE68494-9ED9-428E-B181-E814D25493F2
title: "Base di candelabro", arte romana, inv. CXVIa (ITA/EN)
title: Scheda catalogo digitale Borghese
titleType: AlternativeTitle
Creators: name: Ciccarello, Giulia
name: Galleria Borghese
Publisher: name: Galleria Borghese
Year: 2024

description: Pubblicazione delle schede delle opere conservate nel museo ed estratte dal catalogo digitale di

Galleria Borghese, nelle due versioni esistenti online, in italiano e inglese.

Collegamento al catalogo digitale:

ITA: https://www.collezionegalleriaborghese.it/

EN: https://www.collezionegalleriaborghese.it/en
title: Imaging of post operative cases of cyanotic congenital heart disease using CT and MRI: A pictorial review.
Creators: name: Malhi, Amarinder
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cardiac
subject: CT
subject: MR
subject: Surgery
subject: Congenital

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: This pictorial review describes various procedures done for the treatment of cyanotic congenital heart diseases. The content of the review are as follows: I. Extracardiac procedures 1. Systemic Arterial–to–Pulmonary Artery Shunts-...
Magnetic Moment Formation in Graphene Detected by Scattering of Pure Spin Currents
Creators: name: McCreary, K. M.
name: Schwartz, A. G.
name: Han, W.
name: Fabian, Jaroslav
name: Kawakami, R. K.
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: 530 Physik

description: Hydrogen adatoms are shown to generate magnetic moments inside single layer graphene. Spin transport measurements on graphene spin valves exhibit a dip in the nonlocal spin signal as a function of the applied magnetic field, which is due to scattering (relaxation) of pure spin currents by exchange coupling to the magnetic moments. Furthermore, Hanle spin precession measurements indicate the presence of an exchange field generated by the magnetic moments. The entire experiment including spin transport is performed in an ultrahigh vacuum chamber, and the characteristic signatures of magnetic moment formation appear only after hydrogen adatoms are introduced. Lattice vacancies also demonstrate similar behavior indicating that the magnetic moment formation originates from pz-orbital defects.
title: CT in two way door ventricles : Double inlet and double outlet right and left ventricles
Creators: name: Malhi, Amarinder
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cardiac
subject: CT
subject: Diagnostic procedure
subject: Congenital

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: These are complex congenital heart diseases that occurs via embryological ventriculoarterial discordance. Digital subtraction angiography is considered to be the gold standard initial modality for these patients, with risks of invasive nature and...
Do H-Bonds Explain Strong Ion Aggregation in Ethylammonium Nitrate + Acetonitrile Mixtures?
Creators: name: Sonnleitner, Thomas
name: Nikitina, Viktoriya
name: Nazet, Andreas
name: Buchner, Richard
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: ion pair ethylammonium nitrate mixt acetonitrile dielec relaxation
subject: 540 Chemie

description: Binary mixtures of the protic ionic liquid ethylammonium nitrate (EAN) and acetonitrile (AN) were studied at 25 °C over the entire composition range by means of broadband dielectric spectroscopy covering 0.2 ≤ ν/GHz ≤ 89. The dielectric spectra could be decomposed into two relaxation processes, both of which proved to be composite modes. For dilute solutions the higher-frequency Debye relaxation centered at ∼60 GHz is associated with the rotational diffusion of AN molecules, whereas at higher salt concentrations ultra-fast intermolecular vibrations and librations of EAN dominate the process. For EAN-rich solutions the lower-frequency relaxation is mainly due to jump reorientation of the ethylammonium cation, whereas contact ion pairs (CIPs) dominate this mode for dilute solutions. From the relaxation amplitudes effective solvation numbers and ion-pair concentrations were determined. For vanishing EAN mole fraction, xEAN → 0, an effective cation solvation number of ∼7 was found which steeply drops until xEAN ≈ 0.2 but shows only moderate decrease later on. The obtained association constant for EAN, K0A = 970 L mol−1, exceeds that of other 1 : 1 electrolytes in AN by a factor of ∼30–50. This observation, as well as the fact that CIPs are formed despite strong cation solvation, indicates that ion pairing is mainly driven by the formation of strong hydrogen bonds between anions and cations.
title: ОПТИМАЛЬНЫЙ ВОЗРАСТ УБОЯ БЫЧКОВ ДЛЯ ДЕТСКОГО ПИТАНИЯ
Creators: name: Забашта, Николай Николаевич
name: Головко, Елена Николаевна
name: Синельщикова, Ирина Алексеевна
name: Андросова, Анастасия Николаевна
name: Ижевская, Наталия Георгиевна
Publisher: name: ФГБНУ КНЦЗВ
Year: 2021

description: В научно-хозяйственном опыте в ОАО МОК «Братковский» Кореновского района Краснодарского края установлено, что в возрасте убоя в 15 и 18 месяцев бычки калмыцкой породы различались на 6,7 % по живой массе в пользу убойного возраста в 18 месяцев. В этом возрасте получены лучшие убойные показатели: по убойному выходу - на 5,4 % и выходу говядины бескостной для детского питания - на 2,0 %.  Нежность мяса длиннейшей мышцы 15 и 18 мес бычков не имела достоверных различий по дегустационной оценке. Мясо 18 месячных бычков достоверно богаче такими элементами как калий, фосфор, магний, цинк, железо, медь, йод и селен.
Intrinsic stickiness in open integrable billiards: tiny border effects
Creators: name: Custódio, MS
name: Beims, MW
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Physics (physics.class-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Rounding border effects at the escape point of open integrable billiards are analyzed via the escape times statistics and emission angles. The model is the rectangular billiard and the shape of the escape point is assumed to have a semicircular form. Stickiness and self-similar structures for the escape times and emission angles are generated inside "backgammon" like stripes of initial conditions. These stripes are born at the boundary between two different emission angles but same escape times. As the rounding effects increase, backgammon stripes start to overlap and the escape times statistics obeys the power law decay and anomalous diffusion is expected. Tiny rounded borders (around $0.1\%$ from the whole billiard size) are shown to be sufficient to generate the sticky motion, while borders larger than $10\%$ are enough to produce escape times with chaotic decay.
description: 06 pages, 5 figures.
title: ПРОДУКТИВНОСТЬ ПЧЁЛ СЕРОЙ ГОРНОЙ КАВКАЗСКОЙ ПОРОДЫ  В ДВУХКОРПУСНЫХ УЛЬЯХ В УСЛОВИЯХ КРАСНОДАРСКОГО КРАЯ
Creators: name: Свистунов, Сергей Владимирович
name: Плотников, Сергей Александрович
name: Перминов, Александр Сергеевич
Publisher: name: ФГБНУ КНЦЗВ
Year: 2021

description: Получены данные о продуктивности семей пчёл серой горной кавказской породы в условиях Краснодарского края при содержании семей пчёл двухкорпусных ульях. В мае 2020 г. были сформированы опытные группы по принципу пар-аналогов. Учёт проводился до начала основного медосбора. Применение в весенне-летний период двухкорпусного улья с некоторыми конструктивными изменениями, достоверно увеличивает медовую продуктивность пчелиных семей на 11,99 % (Р ≥ 0,99).
A relativistic coupled-channel formalism for electromagnetic form factors of 2-body bound states
Creators: name: Biernat, Elmar P.
name: Klink, William H.
name: Schweiger, Wolfgang
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss a Poincaré invariant coupled-channel formalism which is based on the point-form of relativistic quantum mechanics. Electromagnetic scattering of an electron by a 2-body bound state is treated as a 2-channel problem for a Bakamjian-Thomas-type mass operator. In this way retardation effects in the photon-exchange interaction are fully taken into account. The electromagnetic current of the 2-body bound state is then extracted from the one-photon-exchange optical potential. As an application we calculate electromagnetic pion and deuteron form factors. Wrong cluster properties, inherent in the Bakamjian-Thomas framework, are seen to cause spurious (unphysical) contributions in the current. These are separated and eliminated in an unambiguous way such that one is left with a current that has all the desired properties.
description: 3 pages, 2 figures, Presented at the 21st European Conference on Few-Body Problems in Physics, Salamanca, Spain, 30 August - 3 September 2010
General theory of environment-assisted entanglement distillation
Creators: name: Buscemi, Francesco
name: Datta, Nilanjana
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We evaluate the one-shot entanglement of assistance for an arbitrary bipartite state. This yields another interesting result, namely a characterization of the one-shot distillable entanglement of a bipartite pure state. This result is shown to be stronger than that obtained by specializing the one-shot hashing bound to pure states. Finally, we show how the one-shot result yields the operational interpretation of the asymptotic entanglement of assistance proved in [Smolin et al., Phys. Rev. A 72, 052317 (2005)].
description: 23 pages, one column, final published version
Study of New Afton ore heterogeneity and its amenability to sensor based ore sorting
Creators: name: Erdenebat, Elberel
Publisher: name: University of British Columbia
Year: 2017

description: With extraction of low-grade and high throughput deposits, elimination of tonnes of uneconomic material is highly desired to reduce energy consumption and water usage in the mine/mill production cycle. Even though technologies such as sensor-based sorting has wide application for pre-concentration purposes, effectiveness of sorter systems and key parameters for sortability of a material are still in the developmental stage. Number of factors such as grade variability, mineralogical alteration and ore blending scenarios during material handling will significantly affect contents of a material resulting in unforeseen changes in downstream processes. For these reasons, the ‘ore heterogeneity’ parameter is studied to evaluate sortability of an ore material under varying mine production scenarios. Production data, drillhole data and representative drawpoint samples were provided from the New Afton copper-gold mine located near Kamloops, BC. The New Afton mine utilizes the block caving method for extraction of ore from the copper-gold alkali-porphyry deposit. The distribution heterogeneity (DH) parameter is estimated for the data sets and the quantity of potentially removable material ahead of delivery to mill is studied. The DH is defined by variation of grade of a group of samples that constitute a lot, i.e. a group being an equal tonnage of material drawn from a drawpoint and the lot being the drawpoint. With this approach, the DH is analyzed across drawpoints, vertically within a drawpoint and along drill holes with changing vertical intervals of 0.5m – 10m. The DH values are compared with copper grades and an inverse relationship is found. This finding indicated that sortability of ore material can be defined by a heterogeneity parameter, especially the information can be obtained earlier from drillcore samples. The drillcore information can indicate a measure of heterogeneity and related copper grade of an in-situ material in advance of assay samples or sensor detection where a certain degree of mixing has occurred. Overall, 27% of the sample data from the New Afton historical production record has grades less than 0.4% Cu, which is the current cut-off grade, and it correlates with relatively high heterogeneity and presents an opportunity for sorting and feed grade upgrade.
Assessing the Organizational Climate for Translational Research with a New Survey Tool
Creators: name: Simons, Arno
name: Riedel, Nico
name: Toelch, Ulf
name: Hendriks, Barbara
name: Müller‑Ohlraun, Stephanie
name: Liebenau, Lisa
name: Ambrasat, Jens
name: Dirnagl, Ulrich
name: Reinhart, Martin
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: Translational research
subject: Translation
subject: Survey tool
subject: Organizational climate
subject: Research integrity
subject: Biomedicine
subject: Medicine
subject: Clinical practice
subject: Responsible research
subject: Public health
subject: Science
subject: Research practice
subject: 100 Philosophie, Parapsychologie und Okkultismus, Psychologie
subject: 500 Naturwissenschaften und Mathematik

description: Promoting translational research as a means to overcoming chasms in the translation of knowledge through successive fields of research from basic science to public health impacts and back is a central challenge for research managers and policymakers. Organizational leaders need to assess baseline conditions, identify areas needing improvement, and to judge the impact of specific initiatives to sustain or improve translational research practices at their institutions. Currently, there is a lack of such an assessment tool addressing the specific context of translational biomedical research. To close this gap, we have developed a new survey for assessing the organizational climate for translational research. This self-assessment tool measures employees’ perceptions of translational research climate and underlying research practices in organizational environments and builds on the established Survey of Organizational Research Climate, assessing research integrity. Using this tool, we show that scientists at a large university hospital (Charité Berlin) perceive translation as a central and important component of their work. Importantly, local resources and direct support are main contributing factors for the practical implementation of translation into their own research practice. We identify and discuss potential leverage points for an improvement of research climate to foster successful translational research.
Nonlinear spin to charge conversion in mesoscopic structures
Creators: name: Stano, Peter
name: Fabian, Jaroslav
name: Jacquod, Philippe
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: 530 Physik

description: Motivated by recent experiments [ I. J. Vera-Marun, V. Ranjan and B. J. van Wees Nat. Phys. 8 313 (2012)], we formulate a nonlinear theory of spin transport in quantum coherent conductors. We show how a mesoscopic constriction with energy-dependent transmission can convert a spin current injected by a spin accumulation into an electric signal, relying neither on magnetic nor exchange fields. When the transmission through the constriction is spin independent, the spin-charge coupling is nonlinear, with an electric signal that is quadratic in the accumulation. We estimate that gated mesoscopic constrictions have a sensitivity that allows to detect accumulations much smaller than a percent of the Fermi energy.
The Measurement of Wealth: Recessions, Sustainability and Inequality
Creators: name: Stiglitz, Joseph E.
Publisher: name: Columbia University
Year: 2015
Subjects: Economics
Economic development
Wealth
Business cycles
Sustainable development

description: This paper considers two central problems in our statistical frameworks which impair the ability to use wealth to assess economic sustainability or the impacts of economic downturns. Some increases in wealth may reflect increased economic rents—in particular, land and exploitation rents—and their capitalized value, unrelated to an increase in the productive capacity of the economy. Another major problem in our wealth accounts is the “missing capital” required to explain the marked decrease in economic output, at the time of the recession and in the years following, that cannot be fully accounted for by a decrease in measured inputs. When account is taken of this missing capital, the adverse effects of austerity appear much greater than suggested by the standard national income accounts.
SUPPLEMENTAL MATERIALS from The evolution of sour taste
Creators: name: Frank, Hannah E. R.
name: Amato, Katie
name: Trautwein, Michelle
name: Maia, Paula
name: Liman, Emily R.
name: Nichols, Lauren M.
name: Schwenk, Kurt
name: Breslin, Paul A. S.
name: Dunn, Robert R.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60801 Animal Behaviour

description: The evolutionary history of sour taste has been little studied. Through a combination of literature review and trait mapping on the vertebrate phylogenetic tree, we consider the origin of sour taste, potential cases of the loss of sour taste, and those factors that might have favoured changes in the valence of sour taste—from aversive to appealing. We reconstruct sour taste as having evolved in ancient fish. By contrast to other tastes, sour taste does not appear to have been lost in any major vertebrate taxa. For most species, sour taste is aversive. Animals, including humans, that enjoy the sour taste triggered by acidic foods are exceptional. We conclude by considering why sour taste evolved, why it might have persisted as vertebrates made the transition to land and what factors might have favoured the preference for sour-tasting, acidic foods, particularly in hominins, such as humans.
Models based on Mittag-Leffler functions for anomalous relaxation in dielectrics
Creators: name: de Oliveira, Edmundo Capelas
name: Mainardi, Francesco
name: Vaz, Jayme
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Mathematical Physics (math-ph)
subject: Complex Variables (math.CV)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 26A33, 33E12, 44A10

description: We revisit the Mittag-Leffler functions of a real variable $t$, with one, two and three order-parameters $\{α, β, γ\}$, as far as their Laplace transform pairs and complete monotonicty properties are concerned. These functions, subjected to the requirement to be completely monotone for $t>0$, are shown to be suitable models for non--Debye relaxation phenomena in dielectrics including as particular cases the classical models referred to as Cole-Cole, Davidson-Cole and Havriliak-Negami. We show 3D plots of the response functions and of the corresponding spectral distributions, keeping fixed one of the three order-parameters.
description: 22 pages, 6 figures, Second Revised Version
Weak localization and Raman study of anisotropically etched graphene antidots
Creators: name: Oberhuber, Florian
name: Blien, Stefan
name: Heydrich, Stefanie
name: Yaghobian, Fatemeh
name: Korn, Tobias
name: Schueller, Christian
name: Strunk, Christoph
name: Weiss, Dieter
name: Eroms, Jonathan
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: atomic force microscopy, graphene, heat treatment, nanofabrication, nanopatterning, nanostructured materials, quantum dots, Raman spectra, scanning electron microscopy, sputter etching, weak localisation
subject: 530 Physik
subject: 78.30.Na, 81.16.Rf, 81.40.Gh, 81.65.Cf, 61.48.Gh

description: We study a crystallographic etching process of graphene nanostructures, where zigzag edges can be prepared selectively. The process involves heating exfoliated single-layer graphene samples with a predefined pattern of antidot arrays in an argon atmosphere at 820 ∘C, which selectively removes carbon atoms located on armchair sites. Atomic force microscopy and scanning electron microscopy cannot resolve the structure on the atomic scale. However, weak localization and Raman measurements, which both probe intervalley scattering at armchair edges, indicate that zigzag regions are enhanced compared to samples prepared with oxygen based reactive ion etching only.
Interconnectedness as a source of uncertainty in systemic risk
Creators: name: Roukny, Tarik
name: Battiston, Stefano
name: Stiglitz, Joseph E.
Publisher: name: Columbia University
Year: 2018
Subjects: Economics
Uncertainty
Finance
Contagion (Social psychology)

description: Financial networks have shown to be important in understanding systemic events in credit markets. In this paper, we investigate how the structure of those networks can affect the capacity of regulators to assess the level of systemic risk. We introduce a model to compute the individual and systemic probability of default in a system of banks connected in a generic network of credit contracts and exposed to external shocks with a generic correlation structure. Even in the presence of complete knowledge, we identify conditions on the network for the emergence of multiple equilibria. Multiple equilibria give rise to uncertainty in the determination of the default probability. We show how this uncertainty can affect the estimation of systemic risk in terms of expected losses. We further quantify the effects of cyclicality, leverage, volatility and correlations. Our results are relevant to the current policy discussions on new regulatory framework to deal with systemic events of distress as well as on the desirable level of regulatory data disclosure.
Superconductivity at the Border of Electron Localization and Itinerancy
Creators: name: Yu, Rong
name: Goswami, Pallab
name: Si, Qimiao
name: Nikolic, Predrag
name: Zhu, Jian-Xin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The superconducting state of iron pnictides and chalcogenides exists at the border of antiferromagnetic order. Consequently, these materials could provide clues about the relationship between magnetism and unconventional superconductivity. One explanation, motivated by the so-called bad-metal behaviour of these materials, proposes that magnetism and superconductivity develop out of quasi-localized magnetic moments which are generated by strong electron-electron correlations. Another suggests that these phenomena are the result of weakly interacting electron states that lie on nested Fermi surfaces. Here we address the issue by comparing the newly discovered alkaline iron selenide superconductors, which exhibit no Fermi-surface nesting, to their iron pnictide counterparts. We show that the strong-coupling approach leads to similar pairing amplitudes in these materials, despite their different Fermi surfaces. We also find that the pairing amplitudes are largest at the boundary between electronic localization and itinerancy, suggesting that new superconductors might be found in materials with similar characteristics.
description: Version of the published manuscript prior to final journal-editting. Main text (23 pages, 4 figures) + Supplementary Information (14 pages, 7 figures, 3 tables). Calculation on the single-layer FeSe is added. Enhancement of the pairing amplitude in the vicinity of the Mott transition is highlighted. Published version is at http://www.nature.com/ncomms/2013/131115/ncomms3783/full/ncomms3783.html