cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chemical Potential Dependence of Chiral Quark Condensate in Dyson-Schwinger Equation Approach of QCD
Creators: name: Chang, Lei
name: Chen, Huan
name: Wang, Bin
name: Yuan, Wei
name: Liu, Yu-xin
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a chemical potential dependent effective gluon propagator and study the chiral quark condensate in strongly interacting matter in the framework of Dyson-Schwinger equation approach. The obtained results manifest that, as the effect of the chemical potential on the effective gluon propagator is taken into account, the chiral quark condensate decreases gradually with the increasing of the chemical potential if it is less than the critical value, and the condensate vanishes suddenly at the critical chemical potential. The inclusion of the chemical potential in the effective gluon propagator enhances the decreasing rate and decreases the critical chemical potential. It indicates that the chiral symmetry can be restored completely at a critical chemical potential and restored partially as the chemical potential is less than the critical value. If the effective gluon propagator is independent of the chemical potential, the chiral symmetry can only be restored suddenly but no gradual restoration.
description: 19 pages, 3 figures, completely rewritten
Motion of massive particles around a charged Weyl black hole and the geodetic precession of orbiting gyroscopes
Creators: name: Fathi, Mohsen
name: Kariminezhad, Mona
name: Olivares, Marco
name: Villanueva, J. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The advanced state of cosmological observations constantly tests the alternative theories of gravity that originate from Einstein's theory. However, this is not restricted to modifications to general relativity. In this sense, we work in the context of Weyl's theory, more specifically, on a particular black hole solution for a charged massive source, which is confronted with the classical test of the geodetic precession, to obtain information about the parameters associated with this theory. To fully assess this spacetime, the complete geodesic structure for massive test particles is presented.
description: 22 pages, 15 figures
Localized waves in silicates. What do we know from experiments?
Creators: name: Russell, F. Michael
name: Archilla, Juan F. R.
name: Medina-Carrasco, Santiago
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Since the latest review about solitary localized waves in muscovite, called quodons, [FM Russell, Springer Ser. Mater Sci. 221 (2015) 3] there have been many developments, specially from the point of view of experiments, published in several journals. The breakthrough hypothesis that was advanced in that review that dark tracks were produced by positive electrical charge moving in a localized wave, either transported by swift particles or by nonlinear localized waves, has been confirmed by experiments in muscovite and other silicates. In this paper we review the experimental results, some already published and some new, specially the phenomenon of charge transport without an electric field, called hyperconductivity. We also consider alternative explanations as phase transitions for other tracks. We also attempt to describe numerical simulations that have confirmed the order of magnitude of quodons energy and calculations underway to determine more properties of electron and hole transport by quodons
description: 14 pages, 6 figures
title: Asarota und Xenia - Die antike Ikonografie von Speiseresten und Nahrungsmitteln im Mosaik
title: Asarota and Xenia
Creators: name: Hornik, Mona
Publisher: name: Philipps-Universität Marburg
Year: 2015
Subjects: Asarota
The arts
K
Xenia
Asarotos Oikos
Mosaic, Xenia
Klassische Archäologie
Mosaik

description: The thesis deals with ancient
      mosaics depicting food and so-called unswept floors. These
      mosaic-themes have been popular throughout the mediterranean
      regions from the Hellenistic period until Byzantine
      times.
description: Die Arbeit befasst sich mit antiken
      Mosaiken, die Nahrungsmittel und Speisereste darstellen.
      Diese Mosaikthemen waren vom Hellenismus bis in die
      byzantinische Zeit im gesamten Mittelmeerraum
      verbreitet.
Tripartite Entanglement of Hawking Radiation in Dispersive Model
Creators: name: Nambu, Yasusada
name: Osawa, Yuki
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate entanglement of the Hawking radiation in a dispersive model with subluminal dispersion. In this model, feature of the Hawking radiation is represented by three mode Bogoliubov transformation connecting the in-vacuum state and the out-state. We obtain the exact form of the tripartite in-vacuum state which encodes structure of multipartite entanglement. Bogoliubov coefficients are computed by numerical calculation of the wave equation with subluminal dispersion and it is found that genuine tripartite entanglement persists in whole frequency range up to the cutoff arisen from the subluminal dispersion. In the low frequency region, amount of genuine tripartite entanglement is small compared to bipartite entanglement between the Hawking particle and its partner mode, and the deviation from the thermal spectrum is negligible. On the other hand, in the high frequency region near the cutoff, entanglement is equally shared by two pairs of three modes and the partner picture of the Hawking radiation does not hold.
description: 24 pages, 18 figures, version to appear in Physical Review D
Gravitational wave echoes from black holes in massive gravity
Creators: name: Dong, Ruifeng
name: Stojkovic, Dejan
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational waves are rapidly becoming a very reliable tool for testing alternative theories of gravity. In particular, features in the gravitational wave emission during black hole ringdown phase provide a direct probe of the spacetime outside the black hole. In this article, we consider black holes in ghost-free massive gravity. These black holes generically have scalar hair. We found that a simple coupling between gravitational perturbations and this scalar hair can change the quasinormal ringing of the black hole, and in particular, produce echoes in the emitted gravitational waves. This finding provides a clear-cut way to test massive gravity theory using gravitational wave observations.
description: 8 pages, 3 figures. Accepted for publication in Phys. Rev. D
A Demonstration of Hadron Mass Origin from QCD Trace Anomaly
Creators: name: He, Fangcheng
name: Sun, Peng
name: Yang, Yi-Bo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Quantum chromodynamics (QCD) claims that the major source of the nucleon invariant mass is not the Higgs mechanism but the trace anomaly in QCD energy momentum tensor. Although experimental and theoretical results support such conclusion, a direct demonstration is still absent. We present the first Lattice QCD calculation of the quark and gluon trace anomaly contributions to the hadron masses, using the overlap fermion on the 2+1 flavor dynamical Domain wall quark ensemble at $m_π=340$ MeV and lattice spacing $a=$0.1105 fm. The result shows that the gluon trace anomaly contributes to most of the nucleon mass, and the contribution in the pion state is smaller than that in others nearly by a factor $\sim$10 since the gluon trace anomaly density inside pion is different from the other hadrons and the magnitude is much smaller. The gluon trace anomaly coefficient $β/g^3=-0.056(6)$ we obtained is consistent with its regularization independent leading order value $(-11+\frac{2N_f}{3})/(4π)^2$ perfectly.
description: 9 pages, 5 figures
COVINFORM - Cloud-based interactive dashboard for displaying geospatial layers
Creators: name: Bonavita, Ilaria
name: Aspell, Niamh
name: Buckley, Matt
name: Maitland, Emily
Publisher: name: Zenodo
Year: 2022

description: The COVINFORM project investigates the impact of the COVID-19 pandemic across the 27 EU memberstates (MS) and the UK. One of the projects outputs includes an interactive risk assessment dashboardthat centres on various types of vulnerability (i.e., physical, social, economic and information) and therelated consequences, within the context of COVID-19. Extensive work was undertaken toappropriately define the risk assessment framework, which will ultimately provide a risk score for eachcountry and will be visualised on the geospatial dashboard. These insights will offer stakeholders theopportunity to explore their assumptions of risk, particularly for vulnerable groups determined byshared characteristics (e.g., migrants, low socio-economic status, poor health) during public healthcrises and ultimately inform their future responses.

This report is supplementary to a video demonstration of the dashboard and describes the technicalwork undertaken to date (August 2022) and the additional features to be added before the dashboardis due for completion in April 2023. A demonstration of the dashboard can be found here. To ensurethe dashboard meets the requirements of the intended end users, several workshops will beconducted over the duration of the project. The first workshop was conducted in May 2021 andinvolved both first responders and practitioner partners of the COVINFORM project. The objective wasto determine their user requirements, and several insights were gathered and are presented withinthis report. When the requirements were combined and analysed with the user requirements of otherproject partners, following a virtual workshop, it was established that the dashboards insights wouldbe most suitable for academics and policy makers.

This report describes the technical development of the dashboard, the included features, such as anoverview of the dashboard architecture, the dashboard pages, types of plots and the KnowledgeRepository. The Knowledge Repository will host the COVINFORM project outputs and other relevantsources, such as COVID-19 scientific literature and events. The report concludes with a description ofthe next steps in the dashboard's development pipeline.
Confinement and Graded Partition Functions for $\mathcal{N}=4$ SYM
Creators: name: Cherman, Aleksey
name: Dhumuntarao, Aditya
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Gauge theories with confining phases at low temperatures tend to deconfine at high temperatures. In some cases, for example in supersymmetric theories, confinement can persist for all temperatures provided the partition function includes a grading by $(-1)^F$. When it is possible to define partition functions which smoothly interpolate between no grading and $(-1)^F$ grading, it is natural to ask if there are other choices of grading that have the same effect as $(-1)^F$ on confinement. We explore how this works for $\mathcal{N}=4$ SYM on $S^1\times S^3$ in the large $N$ limit at both small and large coupling. We find evidence for a continuous range of grading parameters that preserve confinement for all temperatures at large coupling, while at small coupling only a discrete set of gradings preserves confinement.
description: 6 pages, 2 figures, updated references
Star Formation and Chemical Evolution of DLAs with Semi-Analytical Model
Creators: name: Hou, J. L.
name: Shu, C. G.
name: Shen, S. Y.
name: Chang, R. X.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have examined some basic properties of damped Ly$α$ systems(DLAs) by semi-analytic model. We assume that DLA hosts are disk galaxies whose mass function is generated by Press-Schechter formulism at redshift 3. Star formation and chemical evolution undergo in the disc. We select modelled DLAs according to their observational criterion by Monte Carlo simulation using random line of sights and disk inclinations. The DLA ages are set to be 1 to 3 Gyr. By best-fitting the predicted metallicity distribution to the observed ones, we get the effective yield for DLAs about $0.25Z_{\odot}$. On the basis of this constrain, we further compared our model predictions with observations at redshift 3 in the following items: number density; gas content; HI frequency distribution; star formation rate density; relationship between metallicity and HI column density. We found that the predicted number density at redshift 3 agree well with the observed value, but the gas content $Ω_{DLA}$ is about 3 times larger than observed since our model predicts more DLA systems with higher column density. The frequency distribution at higher HI column density is quite consistent with observation while some difference exists at lower HI end. The predicted star formation rate density contributed by DLAs is consistent with the most recent observations. Meanwhile, the connection between DLAs and Lyman Break galaxies(LBGs) is discussed by comparing their UV luminosity functions which shows that the DLAs host galaxies are much fainter than LBGs. However, there is a discrepancy between model prediction and observation in the correlation between metallicity and HI column density for DLAs. Further investigations are needed for the star formation mode at high redshift environments.
description: 6 pages, 3 figures, To appear in "Probing Galaxies through Quasar Absorption Lines", Proceedings IAU Colloquium 199, 2005, Eds. P. R. Williams, C. Shu, and B. Menard
Ethical Considerations
Creators: name: Moore, Benjamin
name: Henriksson, Linda
name: Garcia Melero, Dorleta
name: Miren Florez Tapia, Ane
Publisher: name: Zenodo
Year: 2024

description: Deliverable D1.4 – Ethical Considerations provides the ethical and legal framework applicable to the RESPONDENT project to ensure that all research activities conducted are legally compliant, ethically acceptable, and socially desirable.
Electron energy spectrum and density of states for non-symmetric heterostructures in an in-plane magnetic field
Creators: name: Hernandez-Cabrera, A.
name: Aceituno, P.
name: Vasko, F. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Modifications of spin-splitting dispersion relations and density of states for electrons in non-symmetric heterostructures under in-plane magnetic field are studied within the envelope function formalism. Spin-orbit interactions, caused by both a slow potential and the heterojunction potentials (which are described by the boundary conditions) are taken into account. The interplay between these contributions and the magnetic field contribution to the spin-splitting term in the Hamiltonian is essential when energy amount resulting from the Zeeman and spin-orbit coupling are of the same order. Such modifications of the energy spectra allow us to separate the spin-orbit splitting contributions due to a slow potential and due to the heterojunctions. Numerical estimates for selectively-doped heterojunction and quantum well with narrow-gap region of electron localization are performed.
description: 11 pages, 10 figures
Ejection of high-velocity stars from the Galactic Center by an inspiraling Intermediate-Mass Black Hole
Creators: name: Levin, Yuri
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The presence of young stars in the immediate vicinity and strong tidal field of SgrA* remains unexplained. One currently popular idea for their origin posits that the stars were bused in by an Intermediate-Mass Black Hole (IMBH) which has inspiraled into the Galactic Center a few million years ago. Yu and Tremaine (2003) have argued that in this case some of the old stars in the SgrA* cusp would be ejected by hard gravitational collisions with the IMBH. Here we derive a general expression for the phase-space distribution of the ejected high-velocity stars, given the distribution function of the stars in the cusp. We compute it explicitly for the Peebles-Young distribution function of the cusp, and make a detailed model for the time-dependent ejection of stars during the IMBH inspiral. We find that (1) the stars are ejected in a burst lasting a few dynamical friction timescales; if the ejected stars are detected by Gaia they are likely to be produced by a single inspiral event, (2) if the inspiral is circular than in the beginning of the burst the velocity vectors of the ejected stars cluster around the inspiral plane, but rapidly isotropise as the burst proceeds, (3) if the inspiral is eccentric, then the stars are ejected in a broad jet roughly perpendicular to the Runge-Lenz vector of the IMBH orbit. In a typical cusp the orbit will precess with a period of \sim 10^5 years, and the rate of ejection into our part of the Galaxy (as defined by e.g. the Gaia visibility domain) will be modulated periodically. Gaia, together with the ground-based follow-up observations, will be able to clock many high-velocity stars back to their ejection from the Galactic Center, thus measuring some of the above phenomena. This would provide a clear signature of the IMBH inspiral in the past 10--20 Myr.
description: 12 pages, including 7 figures
THE FREQUENCY OF OCCURRENCE OF PATIENTS WITH DENTAL DISEASES AMONG EMPLOYEES OF A CHEMICAL ENTERPRISE
Creators: name: G'afforov, Sunatullo
name: Ibragimova, Feruza
Publisher: name: Zenodo
Year: 2024

description: The question of the negative impact of some industries on the oral cavity remains relevant. The relationship of the high prevalence of non-carious lesions of the teeth and oral mucosa with such industrial processes as oil and gas extraction, metallurgy, chemical production, bakery and confectionery production has been proven . Dental health contributes to the preservation of the ability to work of an important part of the non–population of the country - workers of industrial enterprises, especially since a number of studies convincingly reveal the role of the dental system in the general state of the body.
A Precursor Balloon Mission for Venusian Astrobiology
Creators: name: Hein, Andreas M.
name: Lingam, Manasvi
name: Eubanks, T. Marshall
name: Hibberd, Adam
name: Fries, Dan
name: Blase, William Paul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The potential detection of phosphine in the atmosphere of Venus has reignited interest in the possibility of life aloft in this environment. If the cloud decks of Venus are indeed an abode of life, it should reside in the "habitable zone" between ~ 50-60 km altitude, roughly coincident with the middle cloud deck, where the temperature and pressure (but not the atmospheric composition) are similar to conditions at the Earth's surface. We map out a precursor astrobiological mission to search for such putative lifeforms in situ with instrument balloons, which could be delivered to Venus via launch opportunities in 2022-2023. This mission would collect aerosol and dust samples by means of small balloons floating in the Venusian cloud deck and directly scrutinize whether they include any apparent biological materials and, if so, their shapes, sizes, and motility. Our balloon mission would also be equipped with a miniature mass spectrometer that should permit the detection of complex organic molecules. The mission is augmented by contextual cameras to search for macroscopic signatures of life in the Venusian atmospheric habitable zone. Finally, mass and power constraints permitting, radio interferometric determinations of the motion of the balloons in Venusian winds, together with in situ temperature and pressure measurements, will provide valuable insights into the poorly understood meteorology of the middle cloud region.
description: Published in The Astrophysical Journal Letters; 10 pages; 2 figures; 2 tables
Deep inelastic scattering near the endpoint in soft-collinear effective theory
Creators: name: Chay, Junegone
name: Kim, Chul
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We apply the soft-collinear effective theory (SCET) to deep inelastic scattering near the endpoint region. The forward scattering amplitude, and the structure functions are shown to factorize as a convolution of the Wilson coefficients, the jet functions, the parton distribution functions. The behavior of the parton distribution functions near the endpoint region is considered. It turns out that it evolves with the Altarelli-Parisi kernel even in the endpoint region, and the parton distribution function can be factorized further into a collinear part and the soft Wilson line. The factorized form for the structure functions is obtained by the two-step matching, and the radiative corrections or the evolution for each factorized part can be computed in perturbation theory. We present the radiative corrections of each factorized part to leading order in alpha_s, including the zero-bin subtraction for the collinear part.
description: 40 pages, 12 figures. Two major changes: (1) The zero-bin subtraction is included in the radiative corrections for the collinear part. (2) The parton distribution function near the endpoint region is considered including the soft part. Figures and references are added accordingly
Centre Orthodoxe du Patriarcat Oecuménique: Les Dialogues Oecuméniques Hier et Aujourd'hui
Creators: name: Kemper, Claus
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 36 Nr. 4 (1987): Ökumenische Rundschau, Band 36, Heft 4
The use of raifix to enhance fines and filler retention in mechanical groundwood pulps
Creators: name: Trigylidas, Dennis
Publisher: name: University of British Columbia
Year: 2009

description: This work investigates the use of Raifix as a retention enhancing ATC in clay and PCC filled mechanical groundwood pulp suspensions. Raifix is a starch based Anionic Trash Collector (ATC) which is patented and produced by Raisio Chemicals of Finland. Raifix coagulates the anionic Dissolved and Colloidal Substances (DCS) present in a pulp furnish and attaches them to the fibre. These are subsequently flocculated by a high molecular weight retention aid polymer. In this work, Raifix was used in conjunction with a Poly(ethylene oxide)-Phenol Formaldehyde Resin (PEO-PFR) retention aid system. In first pass retention experiments conducted with a Dynamic Drainage Jar (DDJ), when Raifix was added prior to PFR and PEO, the retention of fines and clay increased by as much as 18% and 31% respectively. In contrast, Raifix had a detrimental effect on retention in the PCC filled pulp suspension. In both cases, the cationic demand and turbidity of the DDJ filtrate (analogous to a mill's white water) decreased as Raifix dosage was increased. Laser diffraction particle size analyses were also performed to observe the aggregation behaviour of clay and PCC filler. When Raifix was added prior to PFR and PEO, the rate of aggregation and aggregate size of clay increased by as much as 1000% and 150% respectively. Once again, Raifix had a detrimental effect on PCC aggregation. Finally, experiments were performed using Fourier Transform Infrared Analysis to observe the molecular interactions between PEO, PFR and Raifix. The results of these experiments show evidence of hydrogen bonding interactions between PEO and PFR as well as Raifix and PFR. This was indicated by a shift of the hydrogen bonded O-H peak to a lower frequency.
Resonant Electron-Plasmon Interactions in Drifting Electron Gas
Creators: name: Akbari-Moghanjoughi, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper we investigate the resonant electron-plasmon interactions in a drifting electron gas of arbitrary degeneracy. The kinetic corrected quantum hydrodyanmic model is transformed into the effective Schrödinger-Poisson model and driven coupled pseudoforce system is obtained via the separation of variables from the appropriately linearized system. It is remarked that in the low phase-speed kinetic regime the characteristic particle-like plasmon branch is profoundly affected by this correction which is a function of the electron number density and temperature. We also present an alternative explanation of the quantum wave-particle duality as a direct consequence of resonant electron-plasmon interaction (electron murmuration). In this picture drifting electrons are resonantly scattered by spatial electrostatic energy distribution, characterizing them by the de Broglie's oscillations. The phase-shift and amplitude of excitations in damped driven pseudoforce system is derived and their variations in terms of normalized chemical potential and electron temperature is studied. In particular we investigate the kinetic correction effect on energy dispersion relation in the electron gas in detail. It is revealed that only the low phase-speed branch of the dispersion curve is significantly affected by the kinetic correction. It is also found that increase in the electron number density leads to increase in effective mass and consequently decrease in electron mobility while the increase in the electron temperature has the converse effect. The kinetic correction also significantly lowers the plasmon conduction band. Current model may be further elaborated to investigate the beam-plasmon interaction and energy exchange in multispecies quantum plasmas.
description: arXiv admin note: substantial text overlap with arXiv:2002.04690
Local Group surveys for Planetary Nebulae
Creators: name: Magrini, Laura
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Local Group (LG) represents the best environment to study in detail the PN population in a large number of morphological types of galaxies. The closeness of the LG galaxies allows to investigate the faintest side of the PN luminosity function and to detect PNe also in the less luminous galaxies, the dwarf galaxies, where a small number of them is expected. A review of the results of the most recent imaging surveys in the LG is presented. Some applications of the surveys for PNe to the study of the star formation history of the host galaxies are analyzed. In addition, these new observational data are an invaluable resource for follow-up spectroscopy to derive the chemical properties of not only PNe, but also other important emission-line sources like HII regions. These are fundamental tools for the discussion of the chemical evolution of the host galaxies, mapping the history of their chemical enrichment at different epochs. The latest results on this subject are presented.
description: 8 pages, 2 figures, invited review to the IAU 234 Conference "Planetary Nebulae in Our Galaxy and Beyond", M. J. Barlow & R. H. Mendez, eds
A respirometric investigation of the activated sludge treatment of BKME during steady state and transient operating conditions
Creators: name: Helle, Steve
Publisher: name: University of British Columbia
Year: 2009

description: Activated sludge is commonly used to treat bleached kraft pulp mill effluent (BKME). Treatment performance during steady state operation is acceptable, but may be less than adequate during periods of unsteady state operation, such as process spills or temperature changes. Nineteen batches of BKME were treated in two lab scale activated sludge bioreactors. The effects of the solids retention time (SRT) and the presence of an aerobic selector on the activated sludge treatment of BKME during steady state and transient operating conditions were investigated. Respirometric methods for the study of activated sludge kinetics were investigated in detail, including the unsteady state nature of the assay, and the presence of multiple substrates. BKME is composed of many different substrates, and the composition was found to be variable from batch to batch. The substrate fractions were classified into two main groups, the readily biodegradable (70%) and the slowly biodegradable (30%). The removal rates of the readily biodegradable substrates were approximately an order of magnitude greater than the removal rates of the slowly biodegradable substrates. The substrate removal rates and the stoichiometry were more dependent upon the wastewater characteristics than the solids retention time or the presence of an aerobic selector. The pH affects the removal rates of all of the substrates in B K M E approximately to the same extent. Below pH 6 and above pH 9, the metabolic activity of the activated sludge was low enough to result in incomplete removal of the slowly biodegradable substrates. Outside of the pH range 5.5 to 9.5, the decay rate of the bacteria increased. Operating at a high SRT (fifteen days) mitigated the negative impact of pH on the biomass.
A Self-Decoupled 32 Channel Receive Array for Human Brain Magnetic Resonance Imaging at 10.5T
Creators: name: Tavaf, Nader
name: Lagore, Russell L.
name: Jungst, Steve
name: Gunamony, Shajan
name: Radder, Jerahmie
name: Grant, Andrea
name: Moeller, Steen
name: Auerbach, Edward
name: Ugurbil, Kamil
name: Adriany, Gregor
name: Van de Moortele, Pierre-Francois
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Systems and Control (eess.SY)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Purpose: Receive array layout, noise mitigation and B0 field strength are crucial contributors to signal-to-noise ratio (SNR) and parallel imaging performance. Here, we investigate SNR and parallel imaging gains at 10.5 Tesla (T) compared to 7T using 32-channel receive arrays at both fields. Methods: A self-decoupled 32-channel receive array for human brain imaging at 10.5T (10.5T-32Rx), consisting of 31 loops and one cloverleaf element, was co-designed and built in tandem with a 16-channel dual-row loop transmitter. Novel receive array design and self-decoupling techniques were implemented. Parallel imaging performance, in terms of SNR and noise amplification (g-factor), of the 10.5T-32Rx was compared to the performance of an industry-standard 32-channel receiver at 7T (7T-32Rx) via experimental phantom measurements. Results: Compared to the 7T-32Rx, the 10.5T-32Rx provided 1.46 times the central SNR and 2.08 times the peripheral SNR. Minimum inverse g-factor value of the 10.5T-32Rx (min(1/g) = 0.56) was 51% higher than that of the 7T-32Rx (min(1/g) = 0.37) with R=4x4 2D acceleration, resulting in significantly enhanced parallel imaging performance at 10.5T compared to 7T. The g-factor values of 10.5T-32Rx were on par with those of a 64-channel receiver at 7T, e.g. 1.8 versus 1.9, respectively, with R=4x4 axial acceleration. Conclusion: Experimental measurements demonstrated effective self-decoupling of the receive array as well as substantial gains in SNR and parallel imaging performance at 10.5T compared to 7T.
description: to be published in Magnetic Resonance in Medicine
Finding Ground States of Sherrington-Kirkpatrick Spin Glasses with Hierarchical BOA and Genetic Algorithms
Creators: name: Pelikan, Martin
name: Katzgraber, Helmut G.
name: Kobe, Sigismund
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: This study focuses on the problem of finding ground states of random instances of the Sherrington-Kirkpatrick (SK) spin-glass model with Gaussian couplings. While the ground states of SK spin-glass instances can be obtained with branch and bound, the computational complexity of branch and bound yields instances of not more than about 90 spins. We describe several approaches based on the hierarchical Bayesian optimization algorithm (hBOA) to reliably identifying ground states of SK instances intractable with branch and bound, and present a broad range of empirical results on such problem instances. We argue that the proposed methodology holds a big promise for reliably solving large SK spin-glass instances to optimality with practical time complexity. The proposed approaches to identifying global optima reliably can also be applied to other problems and they can be used with many other evolutionary algorithms. Performance of hBOA is compared to that of the genetic algorithm with two common crossover operators.
description: Also available at the MEDAL web site, http://medal.cs.umsl.edu/
Spectral Gap and Decay of Correlations in U(1)-Symmetric Lattice Systems in Dimensions D<2
Creators: name: Koma, Tohru
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider many-body systems with a global U(1) symmetry on a class of lattices with the (fractal) dimensions D<2 and their zero temperature correlations whose observables behave as a vector under the U(1) rotation. For a wide class of the models, we prove that if there exists a spectral gap above the ground state, then the correlation functions have a stretched exponentially decaying upper bound. This is an extension of the McBryan-Spencer method at finite temperatures to zero temperature. The class includes quantum spin and electron models on the lattices, and our method also allows finite or infinite (quasi)degeneracy of the ground state. The resulting bounds rule out the possibility of the corresponding magnetic and electric long-range order.
description: 19 pages, no figures, v2: title modified, all the results modified, a result in D=2 added, references added; v3: the result in D=2 deleted due to an error, the results in D<2 modified, title changed
Inertial migration of a deformable capsule in an oscillatory flow in a microchannel
Creators: name: Lafzi, Ali
name: Raffiee, Amir Hossein
name: Dabiri, Sadegh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Dynamics of a deformable capsule in an oscillatory flow of a Newtonian fluid in a microchannel has been studied numerically. The effects of oscillation frequency, capsule deformability, and channel flow rate have been explored by simulating the capsule within a microchannel. In addition, the simulation captures the effect of the type of imposed pressure oscillations on the migration pattern of the capsule. An oscillatory channel flow enables the focusing of extremely small biological particles by eliminating the need to design impractically long channels. The presented results show that the equilibrium position of the capsule changes not only by the addition of an oscillatory component to the pressure gradient, but it also is influenced by the capsule deformability and channel flow rate. Furthermore, it has been shown that the amplitude of oscillation of capsules decreases as the channel flow rate and the rigidity of the capsule increases.
Anomalous gtt couplings in the Littlest Higgs Model with T-parity
Creators: name: Cao, Qing-Hong
name: Chen, Chuan-Ren
name: Larios, F.
name: Yuan, C. -P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we calculate the leading electroweak (EW) corrections to the anomalous $gt\bar{t}$ coupling in the Littlest Higgs model with T-parity (LHT), by applying the Goldstone boson equivalence theorem. In the LHT model, such electroweak corrections arise from the loop diagrams of heavy fermions and the ``would-be'' Goldstone bosons. We further examine the EW corrections in the top quark pair production via the quark annihilation process at the LHC. The negative EW corrections in the Standard Model are partially canceled by the positive EW corrections from the loops of the new heavy particles, and the latter dominates in the large invariant mass of the top quark pair.
description: version appeared in PRD
DYE SENSITIZED SOLAR CELLS BASED ON SOLID STATE ELECTROLYTE WITH POLY (STYRENE-CO-ACRYLONITRIL)
Creators: name: Surasak Santhaveesuk
Publisher: name: Sakon Nakhon Press
Year: 2015
Subjects: Dye sensitized solar cells, Solid state electrolytes, Energy conversion efficiency, Iodide salt potassium, Iodine

description: 2, 7, SNRU Journal of Science and Technology
High-field magneto-excitons in unstrained GaAs/AlGaAs quantum dots
Creators: name: Sidor, Y.
name: Partoens, B.
name: Peeters, F. M.
name: Schildermans, N.
name: Hayne, M.
name: Moshchalkov, V. V.
name: Rastelli, A.
name: Schmidt, O. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The magnetic field dependence of the excitonic states in unstrained GaAs/AlGaAs quantum dots is investigated theoretically and experimentally. The diamagnetic shift for the ground and the excited states are studied in magnetic fields of varying orientation. In the theoretical study, calculations are performed within the single band effective mass approximation, including band nonparabolicity, the full experimental three-dimensional dot shape and the electron-hole Coulomb interaction. These calculations are compared with the experimental results for both the ground and the excited states in fields up to 50 Tesla. Good agreement is found between theory and experiment.
description: 9 pages, 9 figures. To appear in Physical Review B
title: Spójność przestrzenna wsi Wierzenica
Creators: name: Zierke, Piotr
name: Kołata, Joanna
Publisher: name: Publishing House of Poznan University of Technology
Year: 2023

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura Wnętrz, 15, 23-32
Design of high-order short-time approximations as a problem of matching the covariance of a Brownian motion
Creators: name: Predescu, Cristian
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: One of the outstanding problems in the numerical discretization of the Feynman-Kac formula calls for the design of arbitrary-order short-time approximations that are constructed in a stable way, yet only require knowledge of the potential function. In essence, the problem asks for the development of a functional analogue to the Gauss quadrature technique for one-dimensional functions. In PRE 69, 056701 (2004), it has been argued that the problem of designing an approximation of order νis equivalent to the problem of constructing discrete-time Gaussian processes that are supported on finite-dimensional probability spaces and match certain generalized moments of the Brownian motion. Since Gaussian processes are uniquely determined by their covariance matrix, it is tempting to reformulate the moment-matching problem in terms of the covariance matrix alone. Here, we show how this can be accomplished.
description: 15 pages; some typos removed; some slight change of notation here and there
Holographic entanglement negativity and replica symmetry breaking
Creators: name: Dong, Xi
name: Qi, Xiao-Liang
name: Walter, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Since the work of Ryu and Takayanagi, deep connections between quantum entanglement and spacetime geometry have been revealed. The negative eigenvalues of the partial transpose of a bipartite density operator is a useful diagnostic of entanglement. In this paper, we discuss the properties of the associated entanglement negativity and its Rényi generalizations in holographic duality. We first review the definition of the Rényi negativities, which contain the familiar logarithmic negativity as a special case. We then study these quantities in the random tensor network model and rigorously derive their large bond dimension asymptotics. Finally, we study entanglement negativity in holographic theories with a gravity dual, where we find that Rényi negativities are often dominated by bulk solutions that break the replica symmetry. From these replica symmetry breaking solutions, we derive general expressions for Rényi negativities and their special limits including the logarithmic negativity. In fixed-area states, these general expressions simplify dramatically and agree precisely with our results in the random tensor network model. This provides a concrete setting for further studying the implications of replica symmetry breaking in holography.
description: 42 pages, 6 figures
Extending Friedmann equations using fractional derivatives using a Last Step Modification technique: the case of a matter dominated accelerated expanding Universe
Creators: name: Barrientos, E.
name: Mendoza, S.
name: Padilla, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a toy model for extending the Friedmann equations of relativistic cosmology using fractional derivatives. We do this by replacing the integer derivatives, in a few well-known cosmological results with fractional derivatives leaving their order as a free parameter. All this with the intention to explain the current observed acceleration of the Universe. We apply the Last Step Modification technique of fractional calculus to construct some useful fractional equations of cosmology. The fits of the unknown fractional derivative order and the fractional cosmographic parameters to SN Ia data shows that this simple construction can explain the current accelerated expansion of the Universe without the use of a dark energy component with a MOND-like behaviour using Milgrom's acceleration constant which sheds light into to the non-necessity of a dark matter component as well.
description: 13 pages, 3 figures, 3 tables. Accepted for publication in the Journal Symmetry
Phase transition in the Higgs model of scalar dyons
Creators: name: Das, C. R.
name: Laperashvili, L. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the present paper we investigate the phase transition "Coulomb--confinement" in the Higgs model of abelian scalar dyons -- particles having both, electric $e$ and magnetic $g$, charges. It is shown that by dual symmetry this theory is equivalent to scalar fields with the effective squared electric charge e^{*2}=e^2+g^2. But the Dirac relation distinguishes the electric and magnetic charges of dyons. The following phase transition couplings are obtained in the one--loop approximation: α_{crit}=e^2_{crit}/4π\approx 0.19, \tildeα_{crit}=g^2_{crit}/4π\approx 1.29 and α^*_{crit}\approx 1.48.
description: 16 pages, 2 figures
The BayesWave analysis pipeline in the era of gravitational wave observations
Creators: name: Cornish, Neil J.
name: Littenberg, Tyson B.
name: Bécsy, Bence
name: Chatziioannou, Katerina
name: Clark, James A.
name: Ghonge, Sudarshan
name: Millhouse, Margaret
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We describe updates and improvements to the BayesWave gravitational wave transient analysis pipeline, and provide examples of how the algorithm is used to analyze data from ground-based gravitational wave detectors. BayesWave models gravitational wave signals in a morphology-independent manner through a sum of frame functions, such as Morlet-Gabor wavelets or chirplets. BayesWave models the instrument noise using a combination of a parametrized Gaussian noise component and non-stationary and non-Gaussian noise transients. Both the signal model and noise model employ trans-dimensional sampling, with the complexity of the model adapting to the requirements of the data. The flexibility of the algorithm makes it suitable for a variety of analyses, including reconstructing generic unmodeled signals; cross checks against modeled analyses for compact binaries; as well as separating coherent signals from incoherent instrumental noise transients (glitches). The BayesWave model has been extended to account for gravitational wave signals with generic polarization content and the simultaneous presence of signals and glitches in the data. We describe updates in the BayesWave prior distributions, sampling proposals, and burn-in stage that provide significantly improved sampling efficiency. We present standard review checks indicating the robustness and convergence of the BayesWave trans-dimensional sampler.
description: 19 pages, 16 figures
Heralded entanglement distribution between two absorptive quantum memories
Creators: name: Liu, Xiao
name: Hu, Jun
name: Li, Zong-Feng
name: Li, Xue
name: Li, Pei-Yun
name: Liang, Peng-Jun
name: Zhou, Zong-Quan
name: Li, Chuan-Feng
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Owing to the inevitable loss in communication channels, the distance of entanglement distribution is limited to approximately 100 kilometres on the ground. Quantum repeaters can circumvent this problem by using quantum memory and entanglement swapping. As the elementary link of a quantum repeater, the heralded distribution of two-party entanglement between two remote nodes has only been realized with built-in-type quantum memories. These schemes suffer from the trade-off between multiplexing capacity and deterministic properties and hence hinder the development of efficient quantum repeaters. Quantum repeaters based on absorptive quantum memories can overcome such limitations because they separate the quantum memories and the quantum light sources. Here we present an experimental demonstration of heralded entanglement between absorptive quantum memories. We build two nodes separated by 3.5 metres, each containing a polarization-entangled photon-pair source and a solid-state quantum memory with bandwidth up to 1 gigahertz. A joint Bell-state measurement in the middle station heralds the successful distribution of maximally entangled states between the two quantum memories with a fidelity of 80.4 $\pm$ 2.2 per cent ($\pm$1 standard deviation). The quantum nodes and channels demonstrated here can serve as an elementary link of a quantum repeater. Moreover, the wideband absorptive quantum memories used in the nodes are compatible with deterministic entanglement sources and can simultaneously support multiplexing, which paves the way for the construction of practical solid-state quantum repeaters and high-speed quantum networks.
description: 36 pages, 11 figures
Silberer, Michael: Die Trinitätsidee im Werk von Pavel A. Florenskij
Creators: name: Lilienfeld, Fairy Von
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 36 Nr. 4 (1987): Ökumenische Rundschau, Band 36, Heft 4