cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Le origini cristiane e la Chiesa di Roma nella storia del Baronio: polemica ed exemplum
Creators: name: Guazzelli, Giuseppe Antonio
Publisher: name: Roma Tre-Press
Year: 2013

description: Abstract:

Cesare Baronio (Sora 1538 - Roma 1607), sacerdote oratoriano e dal 1596 cardinale, fu impegnato in diversi progetti promossi dalla Curia romana per definire il patrimonio dottrinale e liturgico della Chiesa cattolica. I suoi principali lavori restano le Notationes al Martyrologium Romanum edite per la prima volta nel 1586 ed esito di un articolato processo di revisione dei testi liturgici che impegnò la Chiesa postridentina, e gli Annales Ecclesiastici che, pubblicati in 12 volumi tra il 1588 ed il 1607, rappresentarono la risposta ufficiale di parte cattolica alle protestanti Centurie di Magdeburgo. Ciò che nel complesso emerge dalla produzione del Baronio è una strenua difesa della Chiesa di Roma, rappresentata nello svolgersi della sua storia come sempre fedele all’originario messaggio evangelico e al patrimonio dottrinale stabilitosi nei primi secoli. Al tempo stesso, Baronio tracciava un racconto storico in cui la Chiesa, costantemente impegnata nella difesa dell’ortodossia, era descritta come sempre vittoriosa nel confronto sia con le diverse dottrine eretiche, sia con i poteri temporali che, contagiati dalle stesse eresie, le erano stati avversi.

Abstract:

The Oratorian priest – later cardinal – Cesare Baronio (Sora 1538 - Rome 1607), was extensively involved in several projects promoted by the Roman Curia, after the closure of the Council of Trent, to define Catholic doctrine and liturgy, as well as to outline the history of the Church in polemical response to the Protestant Magdeburg Centuries. His major works are the Notationes to the Martyrologium Romanum (first published in Rome in 1586) and the Annales ecclesiastici (12 vols., Rome 1588-1607), in which he set out the history of the Church from the birth of Christ down to AD 1198. What emerges is a Roman Church portrayed as ‘ever the same’ down through the centuries and completely respectful of doctrines and rites established in the Apostolic age. Baronio also outlined a history where the Chuch was the protagonist, showing it as having been victorious not only against heresies, but also against rulers who were far from orthodox or who were even openly hostile towards the Church.
description: KRYPTON – VOL.1 – 2013 – APOLOGIE
The next steps in next-gen sequencing of cancer genomes
Creators: name: Hayes, D. Neil
name: Kim, William Y.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: The necessary infrastructure to carry out genomics-driven oncology is now widely available and has resulted in the exponential increase in characterized cancer genomes. While a subset of genomic alterations is clinically actionable, the majority of somatic events remain classified as variants of unknown significance and will require functional characterization. A careful cataloging of the genomic alterations and their response to therapeutic intervention should allow the compilation of an “actionability atlas” and the creation of a genomic taxonomy stratified by tumor type and oncogenic pathway activation. The next phase of genomic medicine will therefore require talented bioinformaticians, genomic navigators, and multidisciplinary approaches to decode complex cancer genomes and guide potential therapy. Equally important will be the ethical and interpretable return of results to practicing oncologists. Finally, the integration of genomics into clinical trials is likely to speed the development of predictive biomarkers of response to targeted therapy as well as define pathways to acquired resistance.
Efficient global resolvent analysis via the one-way Navier-Stokes equations. Part 1. Forced response
Creators: name: Towne, Aaron
name: Rigas, Georgios
name: Pickering, Ethan
name: Colonius, Tim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Resolvent analysis is a powerful tool for modeling and analyzing turbulent flows and in particular provides an approximation of coherent flow structures. Despite recent algorithmic advances, computing resolvent modes for flows with more than one inhomogeneous spatial coordinate remains computationally expensive. In this two-part paper, we show how efficient and accurate approximations of resolvent modes can be obtained using a well-posed spatial marching method for flows that contain a slowly varying direction. In this first part of the paper, we derive a well-posed and convergent one-way equation describing the downstream-traveling waves supported by the linearized Navier-Stokes equations. Integrating these equations, which requires significantly less CPU and memory resources than a direct solution of the linearized Navier-Stokes equations, approximates the action of the resolvent operator on a forcing vector. This capability is leveraged in part 2 of the paper to compute approximate resolvent modes. The method is validated and demonstrated using the examples of a simple acoustics problem and a supersonic turbulent jet.
Universal Bounds on the Time Evolution of Entanglement Entropy
Creators: name: Avery, Steven G.
name: Paulos, Miguel F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using relative entropy, we derive bounds on the time rate of change of geometric entanglement entropy for any relativistic quantum field theory in any dimension. The bounds apply to both mixed and pure states, and may be extended to curved space. We illustrate the bounds in a few examples and comment on potential applications and future extensions.
description: 8 page, 1 figure
Cavity Amplified Scattering Spectroscopy reveals the dynamics of proteins and nanoparticles in quasi-transparent and miniature samples
Creators: name: Graciani, Guillaume
name: King, John T.
name: Amblard, Francois
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Dynamic light scattering techniques are routinely used for numerous industrial and research applications, because they can give access to the motion spectrum of micro- and nano-objects, and therefore to particle sizes or visco-elastic properties. However, measurements are impossible when samples do not scatterer light enough, i.e. when there are too few scattering events due to excessively small scattering cross-sections and/or low concentrations of scatterers. Here, we propose to amplify light scattering efficiency by placing weakly scattering samples inside a Lambertian cavity with high reflectance walls. It produces a 3D isotropic and homogeneous light field that effectively elongates the scattering pathlength by 2 to 3 orders of magnitude, and leads to a dramatic increase in sensitivity. We could indeed measure the diffusion coefficient and size of particles ranging from 5nm to 20 microns with volume fractions as low at 10^(-9) in volumes as low as 100 microliters, and in solvents with refractive index mismatches down to 0.01. With a 10^(4) fold increase in sensitivity compared to classical techniques, we considerably expand the applications of light scattering to highly diluted samples, miniaturized microfluidics samples, and samples practically deemed non-scattering. Beyond the realm of current applications of light scattering techniques, our Cavity Amplified Scattering Spectroscopy method (CASS) and its outstanding sensitivity represent a major methodological step towards the study of problems such as the ballistic limit of Brownian motion, the internal dynamics of proteins, or the low frequency dielectric dynamics of liquids.
Out-of-equilibrium photon production and electric conductivity in a holographic Bjorken expanding plasma
Creators: name: Grieninger, Sebastian
name: Zahed, Ismail
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analytically compute the out-of-equilibrium direct photon production rate and electric conductivity, in a strongly coupled and expanding Bjorken plasma, from holography. Our results are valid at late times where the expanding plasma asymptotes Bjorken hydrodynamics. The out-of-equilibrium rates are substantially harder and larger, early on in the Bjorken expansion phase.
description: 10+1 pages, 4 figures, matches version to appear in PRD
Influence of DPSS Laser on Polymerization Shrinkage and Mass Change of Resin Composites
Creators: name: Kwon, Yong Hoon
name: Park, Mi-Gyong
name: Ko, Ching-Chang
name: Kim, Hyung-Il
name: Shin, Dong-Hee
name: García-Godoy, Franklin
name: Yun, Dong-In
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: This study evaluated the effectiveness of the diode-pumped solid state (DPSS) laser as a light source for light-curing dental resin composites.
Effect of 457 nm Diode-Pumped Solid State Laser on the Polymerization Composite Resins: Microhardness, Cross-Link Density, and Polymerization Shrinkage
Creators: name: Jeong, Chang-Mo
name: Park, Jeong-Kil
name: Son, Sung-Ae
name: Ko, Ching-Chang
name: Kwon, Yong Hoon
name: Jung, Kyoung-Hwa
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Objective: The purpose of the present study was to test the usefulness of 457 nm diode-pumped solid state (DPSS) laser as a light source to cure composite resins. Materials and methods: Five different composite resins were light cured using three different light-curing units (LCUs): a DPSS 457 nm laser (LAS), a light-emitting diode (LED), and quartz-tungsten-halogen (QTH) units. The light intensity of LAS was 560 mW/cm2, whereas LED and QTH LCUs was ∼900 mW/cm2. The degree of polymerization was tested by evaluating microhardness, cross-link density, and polymerization shrinkage. Results: Before water immersion, the microhardness of laser-treated specimens ranged from 40.8 to 84.7 HV and from 31.7 to 79.0 HV on the top and bottom surfaces, respectively, and these values were 3.3–23.2% and 2.9–31.1% lower than the highest microhardness obtained using LED or QTH LCUs. Also, laser-treated specimens had lower top and bottom microhardnesses than the other LCUs treated specimens by 2.4–19.4% and 1.4–27.8%, respectively. After ethanol immersion for 24 h, the microhardness of laser-treated specimens ranged from 20.3 to 63.2 HV on top and bottom surfaces, but from 24.9 to 71.5 HV when specimens were cured using the other LCUs. Polymerization shrinkage was 9.8–14.7 μm for laser-treated specimens, and these were significantly similar or lower (10.2–16.0 μm) than those obtained using the other LCUs. Conclusions: The results may suggest that the 457 nm DPSS laser can be used as a light source for light-curing dental resin composites.
Quantum statistics of four-wave mixing by a non-linear resonant microcavity
Creators: name: Sherkunov, Y.
name: Whittaker, David M.
name: Schomerus, Henning
name: Fal'ko, Vladimir
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyse the correlation and spectral properties of two-photon states resonantly transmitted by a non-linear optical microcavity. We trace the correlation properties of transmitted two-photon states to the decay spectrum of multi-photon resonances in the non-linear microcavity.
Confinement-induced accumulation and spontaneous de-mixing of microscopic active-passive mixtures
Creators: name: Williams, Stephen
name: Jeanneret, Raphaël
name: Tuval, Idan
name: Polin, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Understanding the out-of-equilibrium properties of noisy microscale systems and the extent to which they can be modulated externally, is a crucial scientific and technological challenge. It holds the promise to unlock disruptive new technologies ranging from targeted delivery of chemicals within the body to directed assembly of new materials. Here we focus on how active matter can be harnessed to transport passive microscopic systems in a statistically predictable way. Using a minimal active-passive system of weakly Brownian particles and swimming microalgae, we show that spatial confinement leads to a complex non-monotonic steady-state distribution of colloids, with a pronounced peak at the boundary. The particles' emergent active dynamics is well captured by a space-dependent Poisson process resulting from the space-dependent motion of the algae. Based on our findings, we then realise experimentally the spontaneous de-mixing of the active-passive suspension, opening the way for manipulating colloidal objects via controlled activity fields.
Quantum theory of light-driven coherent lattice dynamics
Creators: name: Caruso, Fabio
name: Zacharias, Marios
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The exposure to intense electromagnetic radiation can induce distortions and symmetry breaking in the crystal structure of solids, providing a route for the all-optical control of their properties. In this manuscript, we formulate a unified theoretical approach to describe the coherent lattice dynamics in presence of external driving fields, electron-phonon and phonon-phonon interactions, and quantum nuclear effects. The main mechanisms for the excitation of coherent phonons - including infrared absorption, displacive excitation, inelastic stimulated Raman scattering, and ionic Raman scattering - can be seamlessly accounted for. We apply this formalism to a model consisting of two coupled phonon modes, where we illustrate the influence of quantum nuclei on structural distortions induced by ionic Raman scattering. Besides validating the widely-employed classical models for the coherent lattice dynamics, our work provides a versatile approach to methodically explore the emergence of quantum nuclear effects in the structural response of crystal lattice to strong fields.
description: 15 pages, 6 figures
Antibiotic resistance in Enterotoxigenic and non-enterotoxigenic Escherichia coli.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: Antibiotic disk susceptibility tests were done on 220 strains of Escherichia coli belonging to serotypes reported in the literature to be associated with the production of enterotoxin. A total of 128 (58%) were resistant to one or more antibiotics, sulfa drugs, or chemotherapeutic agents. An analysis of these strains revealed primary, secondary, and tertiary drug resistance patterns that indicated a selective pattern in the formation of multiple drug resistance in E. coli. Resistances to certain antibiotics were more likely to occur in pairs and triads (secondary resistance patterns) that were often combined or coexisted in a single strain of E. coli to produce tertiary drug resistance patterns, conferring drug resistance to five or six different antibiotics. Among enterotoxin-associated serotypes, single and multiple drug resistance was less frequently associated with enterotoxin-produced strains than with strains from the same serotype that were not enterotoxigenic. Within the enterotoxigenic E. coli, single and multiple resistance to antibiotics was more frequent in strains producing only heat-stable enterotoxin (ST) than in strains producing only heat-labile enterotoxin (LT) or both. The number of resistances to different antibiotics per resistant strain averaged approximately 1.4 for LT plus ST or LT strains, and 3.9 for ST strains and nonenterotoxigenic strains. Phenotypic characterization of 170 strains for four usually plasmid-mediated characteristics showed that the number of antibiotics to which a strain was directly resistant varied with the type and number of plasmid-mediated characteristics present.
Polarized image of an equatorial emitting ring around a 4D Gauss-Bonnet black hole
Creators: name: Qin, Xin
name: Chen, Songbai
name: Jing, Jiliang
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have studied the polarized image of an equatorial emitting ring around a 4D Gauss-Bonnet black hole. Our results show that the effects of Gauss-Bonnet parameter on the polarized image depend on the magnetic field configuration, the observation inclination angle, and the fluid velocity. As the magnetic field lies in the equatorial plane, the observed polarization intensity increases monotonously with Gauss-Bonnet parameter in the low inclination angle case, and its monotonicity disappears in the case with high inclination angle. However, as the magnetic field is vertical to the equatorial plane, the polarization intensity is a monotonously increasing function of Gauss-Bonnet parameter in the high inclination angle case. The changes of the electric vector position angle with Gauss-Bonnet parameter in both cases are more complicated. We also probe the effects of Gauss-Bonnet parameter on the Strokes $Q$-$U$ loops.
description: 18 pages, 14 figures, Accepted by Eur. Phys. J. C
Resolved HI Imaging of a Population of Massive HI-Rich Galaxies with Suppressed Star Formation
Creators: name: Lemonias, Jenna J.
name: Schiminovich, David
name: Catinella, Barbara
name: Heckman, Timothy M.
name: Moran, Sean M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Despite the existence of well-defined relationships between cold gas and star formation, there is evidence that some galaxies contain large amounts of HI that do not form stars efficiently. By systematically assessing the link between HI and star formation within a sample of galaxies with extremely high HI masses (log M_HI/M_sun > 10), we uncover a population of galaxies with an unexpected combination of high HI masses and low specific star formation rates that exists primarily at stellar masses greater than log M_*/M_sun ~ 10.5. We obtained HI maps of 20 galaxies in this population to understand the distribution of the HI and the physical conditions in the galaxies that could be suppressing star formation in the presence of large quantities of HI. We find that all of the galaxies we observed have low HI surface densities in the range in which inefficient star formation is common. The low HI surface densities are likely the main cause of the low sSFRs, but there is also some evidence that AGN or bulges contribute to the suppression of star formation. The sample's agreement with the global star formation law highlights its usefulness as a tool for understanding galaxies that do not always follow expected relationships.
description: 24 pages, 12 figures, ApJ in press
Qualifikation in der Sozialen Arbeit während dem Fachkräftemangel: Eine Forschung zur Professionalisierung von quereinsteigenden Personen im Bereich der Arbeit mit Menschen mit Behinderung
Creators: name: Michel, Anna
name: Theiler, Pia
Publisher: name: Hochschule Luzern – Soziale Arbeit
Year: 2024

description: Die vorliegende Bachelorarbeit trägt den Titel "Qualifikation in der Sozialen Arbeit während dem Fachkräftemangel – Eine Forschung zur Professionalisierung von quereinsteigenden Personen im Bereich der Arbeit mit Menschen mit Behinderung" und wurde von Anna Michel und Pia Theiler verfasst. Die Arbeit beschäftigt sich mit der Qualifikation von Quereinsteigenden in der Sozialen Arbeit, während des aktuell vorherrschenden Fachkräftemangels. Dabei konzentriert sich die Forschung auf das Arbeitsfeld der Sozialpädagogik. Da das Arbeitsfeld mit Menschen mit Behinderung die niedrigste Fachpersonenquote innerhalb der Sozialpädagogik aufweist, wurde darauf ein besonderer Fokus gelegt und die Forschung innerhalb dieser Zielgruppe durchgeführt. 

Ziel ist es zu untersuchen, mit welchen Herausforderungen die Quereinsteigenden im Alltag konfrontiert sind. Ebenso soll ihr Bedarf an Hilfestellungen erforscht werden, um die grösstmögliche Qualität in der Betreuung zu erreichen.

Anhand einer qualitativen Forschung mittels Leitfadeninterviews wurden sechs Quereinsteigende aus der Stiftung für selbstbestimmtes und begleitetes Leben, zu ihren Erlebnissen und Einschätzungen befragt. Anschliessend wurden die Interviews transkribiert, sortiert, analysiert und entsprechend dem aktuellen Theorie- und Forschungsstand eingenordet und diskutiert.

Nach der Auswertung der Ergebnisse wurden Handlungsempfehlungen für die Institution ausgesprochen, mit welchen sie die Quereinsteigenden in ihrer Qualifikation sowie täglichen Arbeit unterstützen können. Diese betreffen unter anderem die Optimierung der Einarbeitungszeit, eine Rollenstärkung von Quereinsteigenden sowie eine individuelle Förderung.
description: + Code Diss LU: hslusa basp be + Fussnote: Bachelor-Arbeit, Hochschule Luzern – Soziale Arbeit, Studienrichtung Sozialpädagogik, 2024 + NL-Code: NLLUHSA202409
Clinical laboratory evaluation of the Abbott MS-2 automated antimicrobial susceptibility testing system: report of a collaborative study.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: The MS-2 system (Abbott Diagnostics, Division of Abbott Laboratories, Dallas, Tex.) was evaluated for its efficacy in determining the susceptibilities of both clinical and selected challenge (nonfastidious, facultative, and aerobic) isolates. The MS-2 results were compared with standard Kirby-Bauer disk diffusion and microdilution results by using fresh clinical isolates. For gram-positive isolates other than enterococci, overall agreement between MS-2 and reference results was 93 to 98%. With enterococci, MS-2 agreement with disk diffusion was 68% but with microdilution was 86% (agreement between disk diffusion and microdilution was 73%). The main discrepancies with enterococci were with cephalothin, penicillin, gentamicin, and kanamycin. With clinical gram-negative isolates, the overall agreement was 91 to 93%, with most discrepancies occurring with Enterobacter spp. and beta-lactam antibiotics (MS-2 versus disk diffusion, 84%; MS-2 versus microdilution, 84%; disk diffusion versus microdilution, 87%) and with Serratia spp. and colistin (false-susceptible results). The agreement of MS-2 results with established reference antibiograms of a special collection of challenge strains was 91 to 97% for the gram-positive cocci and 86 to 98% for the gram-negative strains. (With Enterobacter spp., agreement was 86%, but was greater than 90% for all other organism groups.) Of the 98 finite MS-2 minimum inhibitory concentrations (MICs) that could be directly compared with microdilution MICs, 77 (79%) were within +/- 1 well of the geometric mean microdilution MIC. MS-2 analysis time ranged from 2.8 to 6.5 h (mean, 4.2 h). On the basis of these results, we conclude that the MS-2 can be expected to yield rapid and accurate results with most nonfastidious, facultative, and aerobic pathogens.
The Theory of Efficient Particle Acceleration at Shocks
Creators: name: Caprioli, Damiano
name: Haggerty, Colby
name: Blasi, Pasquale
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The recent discoveries in the theory of diffusive shock acceleration (DSA) that stem from first-principle kinetic plasma simulations are discussed. When ion acceleration is efficient, the back-reaction of non-thermal particles and self-generated magnetic fields becomes prominent and leads to both enhanced shock compression and particle spectra significantly softer than those predicted by the standard test-particle DSA theory. These results are discussed in the context of the non-thermal phenomenology of astrophysical shocks, with a special focus on the remnant of SN1006.
description: 8 pages, 2 figures, Proceedings of 37th International Cosmic Ray Conference (ICRC2021) ; https://pos.sissa.it/395/482
Nonminimal Higgs Models, Dark Matter, and Evolution of the Universe
Creators: name: Ginzburg, I. F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The set of sum rules for a wide class of nonminimal Higgs models has been obtained. Difficulties and ways for revealing the possibilities of studying extended Higgs models at colliders have been revealed with the use of these sum rules and recent LHC results. New methods of studying multidoublet Higgs models with various symmetry groups have been applied to solve problems of classification of these groups, breaking of symmetries in vacuum, etc. A method for the determination of masses and spins of dark matter particles D and their partners via the energy spectrum of a lepton in the $e^+e^-\to DDW^+W^-$ process has been proposed. The possibility of the existence of strongly interacting dark matter has been revealed. Variants of the evolution of the phase states of the Universe have been analyzed within the inert doublet model.
description: 15 pages, 2 figures
Overcoming positivity violations for density matrices in surface hopping
Creators: name: Bondarenko, Anna S.
name: Tempelaar, Roel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Fewest-switches surface hopping (FSSH) has emerged as one of the leading methods for modeling the quantum dynamics of molecular systems. While its original formulation was limited to adiabatic populations, the growing interest in the application of FSSH to coherent phenomena prompts the question how one should construct a complete density matrix based on FSSH trajectories. A straightforward solution is to define adiabatic coherences based on wavefunction coefficients. In this Paper, we demonstrate that inconsistencies introduced in the density matrix through such treatment may lead to a violation of positivity. We furthermore show that a recently proposed coherent generalization of FSSH results in density matrices that satisfy positivity, while yielding an improved accuracy throughout much (but not all) of parameter space.
Evaluation of acridine orange stain for detection of microorganisms in blood cultures.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: A pH 4.0 buffered solution of the fluorochrome acridine orange was used to stain samples of 2,704 blood cultures that failed to yield visible evidence of growth after 1 day of incubation. Results obtained by the staining method were compared with those obtained by aerobic and anaerobic subcultures simultaneously performed upon the same cultures. Of the 109 culture-positive blood specimens initially detected by the acridine orange and the subculture methods, 85 (78%) were detected by both acridine orange and subcultures techniques, 14 (12.8%) were detected by subculture alone, and 10 (9.2%) were detected by acridine orange alone. The differences between the subculture and acridine orange methods were not found to be statistically significant (P less than 0.1). The acridine orange method represents a rapid and inexpensive alternative to conventional subculture techniques for the detection of bacteria in blood cultures that fail to yield visible evidence of growth after 1 day of incubation.
Two-sided Bogoliubov inequality to estimate finite size effects in quantum molecular simulations
Creators: name: Reible, Benedikt
name: Hartmann, Carsten
name: Site, Luigi Delle
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We generalise the two-sided Bogoliubov inequality for classical particles from [L. Delle Site et al., J.Stat.Mech.Th.Exp. 083201 (2017)] to systems of quantum particles. As in the classical set-up, the inequality leads to upper and lower bounds for the free energy difference associated with the partitioning of a large system into smaller, independent subsystems. From a thermodynamic modelling point of view, the free energy difference determines the finite size correction needed to consistently treat a small system as a representation of a large system. Applications of the bounds to quantify finite size effects are ubiquitous in physics, chemistry, material science, or biology, to name just a few; in particular it is relevant for molecular dynamics simulations in which a small portion of a system is usually taken as representative of the idealized large system.
Proton quark distributions from a light-front Faddeev-Bethe-Salpeter approach
Creators: name: Ydrefors, Emanuel
name: Frederico, Tobias
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The projection onto the Light-Front of a Minkowski space Faddeev-Bethe-Salpeter equation model truncated at the valence level is applied to study the proton structure with constituent quarks. The dynamics of the model has built-in: (i) a bound diquark brought by a contact interaction, and (ii) the separation by Λ_QCD of the infrared and ultraviolet interaction regions. The model parameters are fine tuned to reproduce the proton Dirac electromagnetic form factor and mass. From that, the non-polarized longitudinal and transverse momentum distributions were computed. The results for the evolved non-polarized valence parton distributions suggest that: (i) the explicit consideration of the spin degree of freedom of both quark and diquark seems not relevant to it, and (ii) the comparison with the global fit from the NNPDF4.0 calls for higher Fock components of the wave function beyond the valence one.
description: Submitted to Physics Letters B
High-frequency diode effect in superconducting Nb$_3$Sn micro-bridges
Creators: name: Chahid, Sara
name: Teknowijoyo, Serafim
name: Mowgood, Iris
name: Gulian, Armen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The superconducting diode effect has been recently reported in a variety of systems and different symmetry breaking mechanisms have been examined. However, the frequency range of these potentially important devices still remains obscure. We investigated superconducting micro-bridges of Nb$_{3}$Sn in out-of-plane magnetic fields; optimum magnetic fields of $\sim$10 mT generate $\sim $10% diode efficiency, while higher fields of $\sim$15-20 mT quench the effect. The diode changes its polarity with magnetic field reversal. We documented superconductive diode rectification at frequencies up to 100 kHz, the highest reported as of today. Interestingly, the bridge resistance during diode operation reaches a value that is a factor of two smaller than in its normal state, which is compatible with the vortex-caused mechanism of resistivity. This is confirmed by finite element modeling based on time-dependent Ginzburg-Landau equations. To explain experimental findings, no assumption of lattice thermal inequilibrium was required. Dissimilar edges of the superconductor strip can be responsible for the inversion symmetry breaking by vortex penetration barrier; visual evidence of this opportunity was revealed by scanning electron microscopy. Estimates are in favor of much higher (GHz) range of frequencies for this type of diode.
Characterization of some groups of gram-negative nonfermentative bacteria by the carbon source alkalinization technique.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: A total of 541 gram-negative nonfermentative bacterial strains comprising 26 species and unclassified groups were characterized by routine diagnostic and carbon substrate alkalinization techniques. These microorganisms were tested for the ability to cause alkalinization of a basal medium on a total of 217 substrates. We found that 58 carbon substrates had some discriminatory potential. We also performed 30 routine diagnostic tests. The results of these studies were evaluated by numerical taxonomy techniques. A cluster analysis of the results by the Jaccard coefficient method identified 30 clusters at the 45% level. We identified 39 tests that separated most of the groups. Groups of similar organisms or organisms that were difficult to identify were analyzed, and tests that were differential were identified. Because of variability within the clusters, further studies utilizing deoxyribonucleic acid-deoxyribonucleic acid homologies should be undertaken.
High-order QED correction impacts on phase transition of the Euler-Heisenberg AdS black hole
Creators: name: Li, Guan-Ru
name: Guo, Sen
name: Liang, En-Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Two-phase transition branches of the Euler-Heisenberg (EH) anti-de Sitter (AdS) black hole (BH) were derived from its phase transition critical behavior by Magos et al. [Phys. Rev. D. 102, 084011 (2020)]. We found that the phase transition is unstable. Considering the high-order quantum electrodynamics (QED) correction, we re-derive the EHAdS BH solution and investigate its critical thermodynamic quantities. It is found that the corrected EHAdS BH has only one stable phase transition branch, and its critical exponents are equivalent to that of the vdW system. From the microscopic point of view, we also derive its normalized scalar curvature based on the Ruppeiner geometry. Different from two concave surfaces of the scalar curvature without considering the high-order QED correction, we show that the corrected Ruppeiner geometry has only one concave surface. Our results indicate that the phase transition instability derived by Magos $et~al.$ is due to without considering the high-order QED correction.
description: 10 pages, 11 figures
A Bottom-Up Approach: The Data Driven Flavour Model
Creators: name: Merlo, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A bottom-up approach has been adopted to identify a flavour model that agrees with present experimental measurements. The charged fermion mass hierarchies suggest that only the top Yukawa term should be present at the renormalisable level. The flavour symmetry of the Lagrangian including the fermionic kinetic terms and only the top Yukawa is then a combination of $U(2)$ and $U(3)$ factors. Lighter charged fermion and active neutrino masses and quark and lepton mixings arise considering specific spurion fields. The associated phenomenology is investigated and the model turns out to have almost the same flavour protection of the Minimal Flavour Violation, in both quark and lepton sectors. Promoting the spurions to be dynamical fields, the associated scalar potential is also studied and a minimum is identified such that fermion masses and mixings are correctly reproduced.
description: 6 pages, 2 figures, Proceedings of the 20th Lomonosov Conference on Elementary Particle Physics (Moscow, Russia, August 19-25, 2021). arXiv admin note: substantial text overlap with arXiv:2009.10040
Higgs boson production through $b \bar b$ annihilation at threshold in N$^3$LO QCD
Creators: name: Ahmed, Taushif
name: Rana, Narayan
name: Ravindran, V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present threshold enhanced N$^3$LO QCD corrections to inclusive Higgs production through bottom anti-bottom annihilation at hadron colliders using threshold resummed cross section. The resummed cross section is obtained using factorization properties and Sudakov resummation of the inclusive cross section. We use the recent results on threshold N$^3$LO corrections in QCD for Drell-Yan production and three loop QCD corrections to Higgs form factor with bottom anti-bottom quark to achieve this task. This is the first step towards the evaluation of complete N$^3$LO result. We have numerically demonstrated the importance of such corrections at the LHC.
description: 15 pages, 1 figure
Functional renormalization group flows of $\mathcal{N}=1$ supersymmetric abelian gauge model with one chiral and one vector superfield
Creators: name: Echeverria, Jeremy
name: Binder, Maximiliano
name: Schmidt, Ivan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply the functional renormalization group approach to a $\mathcal{N}=1$ supersymmetric gauge model with one chiral superfield coupled to a vector $U(1)$ superfield. We find that the nonrenormalization theorem still works at leading order in the supercovariant derivative expansion of the fields. We also find the beta functions and we study the behavior of its fixed points in the local potential approximation. Regulators are also discussed.
description: 16 pages, 2 figures
The Bohr-Weisskopf effect in the potassium isotopes
Creators: name: Demidov, Yu. A.
name: Kozlov, M. G.
name: Barzakh, A. E.
name: Yerokhin, V. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The magnetic hyperfine structure constants have been calculated for low-lying levels in neutral potassium atom taking into account the Bohr--Weisskopf (BW) and Breit--Rosenthal (BR) effects. According to our results the $4p_{1/2}$ state of K~I is free from both BR and BW corrections on the level of the current theoretical uncertainties. Using this finding and the measured values of the $A(4p_{1/2})$ constants, we corrected the nuclear magnetic moments for several short-lived potassium isotopes. The BW correction is represented as a product of atomic and nuclear factors. We calculated the atomic factor for the ground state of K I, which allowed us to extract nuclear factors for potassium $I^π= 3/2^+$ isotopes from the experimental data. In this way the application range of the single-particle nuclear model for nuclear-factor calculation in these isotopes has been clarified.
EOS: a demonstrator of hybrid optical detector technology
Creators: name: Anderson, T.
name: Anderssen, E.
name: Askins, M.
name: Bacon, A. J.
name: Bagdasarian, Z.
name: Baldoni, A.
name: Barros, N.
name: Bartoszek, L.
name: Bergevin, M.
name: Bernstein, A.
name: Blucher, E.
name: Boissevain, J.
name: Bonventre, R.
name: Brown, D.
name: Callaghan, E. J.
name: Cowen, D. F.
name: Dazeley, S.
name: Diwan, M.
name: Duce, M.
name: Fleming, D.
name: Frankiewicz, K.
name: Gooding, D. M.
name: Grant, C.
name: Juechter, J.
name: Kaptanoglu, T.
name: Kim, T.
name: Klein, J. R.
name: Kraus, C.
name: Kroupová, T.
name: Land, B.
name: Lebanowski, L.
name: Lozza, V.
name: Marino, A.
name: Mastbaum, A.
name: Mauger, C.
name: Mayers, G.
name: Minock, J.
name: Naugle, S.
name: Newcomer, M.
name: Nikolica, A.
name: Gann, G. D. Orebi
name: Pickard, L.
name: Ren, L.
name: Rincon, A.
name: Rowe, N.
name: Saba, J.
name: Schoppmann, S.
name: Sensenig, J.
name: Smiley, M.
name: Song, H.
name: Steiger, H.
name: Svoboda, R.
name: Tiras, E.
name: To, W. H.
name: Trzaska, W. H.
name: Van Berg, R.
name: Veeraraghavan, V.
name: Wallig, J.
name: Wendel, G.
name: Wetstein, M.
name: Wurm, M.
name: Yang, G.
name: Yeh, M.
name: Zimmerman, E. D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: EOS is a technology demonstrator, designed to explore the capabilities of hybrid event detection technology, leveraging both Cherenkov and scintillation light simultaneously. With a fiducial mass of four tons, EOS is designed to operate in a high-precision regime, with sufficient size to utilize time-of-flight information for full event reconstruction, flexibility to demonstrate a range of cutting edge technologies, and simplicity of design to facilitate potential future deployment at alternative sites. Results from EOS can inform the design of future neutrino detectors for both fundamental physics and nonproliferation applications.
Formation of nonspecific precipitants in sera by counterimmunoelectrophoresis.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: Formation of nonspecific precipitants in sera in different kinds of agarose and batches of barbital buffer by routine counterimmunoelectrophoresis was observed. These nonspecific precipitants consistently locating at the cathodal side of the well upon counterimmunoelectrophoresis can lead to the incorrect interpretation that a specific antibody is present in the patient's serum against the antigens tested. This observation indicates the importance of including a negative control (patient's serum alone) with each individual sample tested by counterimmunoelectrophoresis for the detection of specific antibody to reduce false-positives.
Relative frequency of Clostridium difficile in patients with diarrheal disease.
Creators: name: Genta, V
name: Gilligan, P
name: McCarthy, L
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: We have studied 161 patients with diarrheal disease to determine the frequency with which Clostridium difficile occurs in such patients. C. difficile or its toxin or both were detected in stools from 19 patients (11.9%), 17 of whom had previously received antimicrobial agents. Enteric pathogens other than C. difficile were recovered less frequently, with Salmonella sp., Giardia lamblia, and Campylobacter fetus being recovered from 4.1, 2.5, and 1.3%, respectively, of the patients studied. These data suggest that C. difficile may be frequently encountered in specimens obtained from patients with diarrhea who receive antibiotics and may play a role in diarrheal disease in such patients.
Selenomonas sputigena Septicemia
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: Selenomonas sputigena is a curved motile anaerobic gram-negative rod that is a part of the normal upper respiratory tract of man. We present a case of speticemia associated with this organism and believe it to be the first such report describing systemic disease.
Evaluation of two photometers used in enzyme-linked immunosorbent assays.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1982

description: The performance of two commercially available high-speed photometers, designed for through-the-plate reading, was evaluated. Linearity of instrumental reading and reproducibility of same-day and 2-day measurements were assessed by least-squares analysis and analysis of variance, respectively. For both instruments, the photometric error was on the order of thousandths of an absorbance unit and was much smaller than the error of the currently available enzyme-linked immunosorbent assays.
ALMA Fragmented Source Catalogue in Orion (FraSCO) I. Outflow interaction within an embedded cluster in OMC-2/FIR3, FIR4, and FIR5
Creators: name: Sato, Asako
name: Takahashi, Satoko
name: Ishii, Shun
name: Ho, Paul T. P.
name: Machida, Masahiro N.
name: Carpenter, John
name: Zapata, Luis A.
name: Teixeira, Paula Stella
name: Suri, Sümeyye
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a high angular resolution ($\sim1"$) and wide-field ($2'.9 \times 1'.9$) image of the 1.3-mm continuum, CO($J$ = 2--1) line, and SiO($J$ = 5--4) line emissions toward an embedded protocluster, FIR3, FIR4, and FIR5, in the Orion Molecular Cloud 2 obtained from the Atacama Large Millimeter/submillimeter Array (ALMA). We identify 51 continuum sources, 36 of which are newly identified in this study. Their dust masses, projected sizes, and $\mathrm{H_2}$ gas number densities are estimated to be $3.8 \times 10^{-5}$--$ 1.1 \times 10^{-2} \mathrm{M_{\odot}}$, 290--2000 au, and $6.4 \times 10^{6}$--$3.3 \times 10^{8}\,\mathrm{cm^{-3}}$, respectively. The results of a Jeans analysis show that $\sim80\,\%$ of the protostellar sources and $\sim15\,\%$ of the prestellar sources are gravitationally bound. We identify 12 molecular outflows traced in the CO($J$ = 2--1) emission, six of which are newly detected. We spatially resolve shocked gas structures traced by the SiO($J$ = 5--4) emission in this region for the first time. We identify shocked gas originating from outflows and other shocked regions. These results provide direct evidence of an interaction between a dust condensation, FIR4, and an energetic outflow driven by HOPS-370 located within FIR3. A comparison of the outflow dynamical timescales, fragmentation timescales, and protostellar ages shows that the previously proposed triggered star-formation scenario in FIR4 is not strongly supported. We also discuss the spatial distribution of filaments identified in our continuum image by comparing it with a previously identified hub-fiber system in the $\mathrm{N_2H^+}$ line.
description: 45 pages, 24 figures, 2 figure sets, 2 animations, Accepted for publication in ApJ
Heavy Tails in Calabi-Yau Moduli Spaces
Creators: name: Long, Cody
name: McAllister, Liam
name: McGuirk, Paul
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the statistics of the metric on Kähler moduli space in compactifications of string theory on Calabi-Yau hypersurfaces in toric varieties. We find striking hierarchies in the eigenvalues of the metric and of the Riemann curvature contribution to the Hessian matrix: both spectra display heavy tails. The curvature contribution to the Hessian is non-positive, suggesting a reduced probability of metastability compared to cases in which the derivatives of the Kähler potential are uncorrelated. To facilitate our analysis, we have developed a novel triangulation algorithm that allows efficient study of hypersurfaces with $h^{1,1}$ as large as 25, which is difficult using algorithms internal to packages such as Sage. Our results serve as input for statistical studies of the vacuum structure in flux compactifications, and of the distribution of axion decay constants in string theory.
description: 48 pages, 28 figures