cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bandwidth and Aliasing in the Microwave SQUID Multiplexer
Creators: name: Yu, Cyndia
name: Ahmed, Zeeshan
name: Connors, Jake A.
name: D'Ewart, J. Mitch
name: Dober, Bradley
name: Frisch, Josef C.
name: Henderson, Shawn W.
name: Hilton, Gene C.
name: Hubmayr, Johannes
name: Kuenstner, Stephen E.
name: Mates, J. A. Ben
name: Silva-Feaver, Maximiliano
name: Ullom, Joel N.
name: Vale, Leila R.
name: Van Winkle, Dan
name: Young, Edward
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The microwave SQUID multiplexer (umux) has enabled higher bandwidth or higher channel counts across a wide range of experiments in particle physics, astronomy, and spectroscopy. The large multiplexing factor coupled with recent commercial availability of microwave components and warm electronics readout systems make it an attractive candidate for systems requiring large cryogenic detector counts. Since the multiplexer is considered for both bolometric and calorimetric applications across several orders of magnitude of signal frequencies, understanding the bandwidth of the device and its interaction with readout electronics is key to appropriately designing and engineering systems. Here we discuss several important factors contributing to the bandwidth properties of umux systems, including the intrinsic device bandwidth, interactions with warm electronics readout systems, and aliasing. We present simulations and measurements of umux devices coupled with SLAC Microresonator RF (SMuRF) tone-tracking electronics and discuss several implications for future experimental design.
description: Proceedings for Low Temperature Physics 2021, accepted for publication in Journal of Low Temperature Physics. 8 pages (including references), 5 figures
A Schrodinger Cat Living in Two Boxes
Creators: name: Wang, Chen
name: Gao, Yvonne Y.
name: Reinhold, Philip
name: Heeres, R. W.
name: Ofek, Nissim
name: Chou, Kevin
name: Axline, Christopher
name: Reagor, Matthew
name: Blumoff, Jacob
name: Sliwa, K. M.
name: Frunzio, L.
name: Girvin, S. M.
name: Jiang, Liang
name: Mirrahimi, M.
name: Devoret, M. H.
name: Schoelkopf, R. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum superpositions of distinct coherent states in a single-mode harmonic oscillator, known as "cat states", have been an elegant demonstration of Schrodinger's famous cat paradox. Here, we realize a two-mode cat state of electromagnetic fields in two microwave cavities bridged by a superconducting artificial atom, which can also be viewed as an entangled pair of single-cavity cat states. We present full quantum state tomography of this complex cat state over a Hilbert space exceeding 100 dimensions via quantum non-demolition measurements of the joint photon number parity. The ability to manipulate such multi-cavity quantum states paves the way for logical operations between redundantly encoded qubits for fault-tolerant quantum computation and communication.
Cosmic-ray-induced H$_2$ line emission: Astrochemical modeling and implications for JWST observations
Creators: name: Gaches, Brandt A. L.
name: Bialy, Shmuel
name: Bisbas, Thomas G.
name: Padovani, Marco
name: Seifried, Daniel
name: Walch, Stefanie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context: It has been proposed that H$_2$ near-infrared lines may be excited by cosmic rays and allow for a determination of the cosmic-ray ionization rate in dense gas. One-dimensional models show that measuring both the H$_2$ gas column density and H$_2$ line intensity enables a constraint on the cosmic-ray ionization rate as well as the spectral slope of low-energy cosmic-ray protons in the interstellar medium (ISM). Aims: We aim to investigate the impact of certain assumptions regarding the H$_2$ chemical models and ISM density distributions on the emission of cosmic-ray induced H$_2$ emission lines. This is of particular importance for utilizing observations of these lines with the James Webb Space Telescope to constrain the cosmic-ray ionization rate. Methods: We compare the predicted emission from cosmic-ray induced, ro-vibrationally excited H$_2$ emission lines for different one- and three-dimensional models with varying assumptions on the gas chemistry and density distribution. Results: We find that the model predictions of the H$_2$ line intensities for the (1-0)S(0), (1-0)Q(2), (1-0)O(2) and (1-0)O(4) transitions at 2.22, 2.41, 2.63 and 3.00 $μ$m, respectively, are relatively independent of the astro-chemical model and the gas density distribution when compared against the H$_2$ column density, making them robust tracer of the cosmic-ray ionization rate. Conclusions: We recommend the use of ro-vibrational H$_2$ line emission in combination with estimation of the cloud's H$_2$ column density, to constrain the ionization rate and the spectrum of low energy cosmic-rays.
description: Accepted by A&A
Utilisation of wastes for low-cost synthesis of chitosan composites with nanosized sodium aluminium silicate hydrate and geopolymer/zeolite A for the removal of Hg(II) and Pb(II) ions from aqueous media
Creators: name: Abdelbaset, Hossam S.
name: Shama, Sayed A.
name: Hegazey, R.M.
name: Abdelrahman, Ehab A.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Inorganic Chemistry
subject: Plant Biology

description: In this work, nanosized sodium aluminium silicate hydrate and geopolymer/zeolite A samples were obtained using hydrothermal and precipitation methods, respectively. In these methods, aqueous solutions of sodium hydroxide were utilised for the extraction of aluminium and silicon from waste aluminium cans and rice husk ash, respectively. Also, chitosan composites with the aforementioned samples were fabricated. The properties of the obtained nanosized samples and their chitosan composites were identifiedutilizingFT-IR, XRD, HR-TEM, and FE-SEM tools. The average crystallite size of the sodium aluminium silicate hydrate and geopolymer/zeolite A samples is 39.72 and 22.56 nm, respectively. Moreover, the obtained nanosized samples and their chitosan composites were utilised as adsorbents for the effective uptake of Pb(II) and Hg(II) ions from aqueous media. The maximum capacities of sodium aluminium silicate hydrate, geopolymer/zeolite A, sodium aluminium silicate hydrate/chitosan, and geopolymer/zeolite A/chitosan adsorbents towards Hg(II) ions are 88.65, 125.94, 168.35, and 211.86 mg/g, respectively. The maximum capacities of the previous adsorbents towards Pb(II) ions are 123.61, 160.51, 211.86, and 269.54 mg/g, respectively. Furthermore, the uptake processes of Pb(II) and Hg(II) ions using the obtainednanosized samples and their chitosan composites are exothermic, chemical, spontaneous, and well-matched with Langmuir equilibrium isotherm and pseudo-second-order kinetic model.
Important stellar perturbers found during the StePPeD database update based on Gaia EDR3 data
Creators: name: Dybczyński, Piotr A.
name: Berski, Filip
name: Tokarek, Jakub
name: Podlewska-Gaca, Edyta
name: Langner, Krzysztof
name: Bartczak, Przemysław
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. In 2020, the initial version of the Stellar Potential Perturbers Database (StePPeD) was presented with the aim to deliver up-to-date information on the stars and stellar systems that may perturb a long-period comet motion. We used the minimal distance between a star and the Sun as a selecting tool when compiling a list of interesting objects with close encounters with the Solar System, and our selection for that study was based on Gaia DR2 data. Aims. When the Gaia EDR3 data release was published, it became necessary to update this database. Additionally, we performed Monte Carlo simulations to obtain uncertainties on the parameters of the closest approach to the Sun of each object. Methods. We recalculated the close approach parameters of all stars in the previous StePPeD release, which resulted in removing approximately one-third of the total. Then we searched for new candidates in the whole Gaia EDR3 catalogue. We also take into account the duplicity of the found stars and additionally searched for double stars passing near the Sun which had been overlooked in previous papers. We also found the necessary mass estimates for new objects and updated this information for previously selected stars. Results. After a careful checking of all the collected data, we composed a new list of 155 potential stellar perturbers of the long-period comet motion. We applied a new threshold of 2 pc for the minimum star-Sun distance. This list consists of 146 single stars and nine multiple systems. For each object, we also estimated the uncertainty of the parameters of their closest approach to the Sun. Among these stars, we found a new potential strong past perturber, HD 7977, and confirmed the plausibility of a similar action on the part of Gliese 710 in the future.
description: 12 pages, 10 figures, accepted for publication in A&A
Differential Astrometry with Gaia: Investigating relativistic light deflection close to Jupiter
Creators: name: Abbas, U.
name: Bucciarelli, B.
name: Lattanzi, M. G.
name: Crosta, M.
name: Morbidelli, R.
name: Busonero, D.
name: Bramante, L.
name: Messineo, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we develop a differential astrometric framework that is appropriate for a scanning space satellite such as Gaia. We apply it to the first of the GAREQ fields, which is the fruit of dedicated efforts within the Gaia project focused on measuring the relativistic deflection of light close to Jupiter's limb. This provides a preliminary assessment of: a) the observability of the relativistic deflection of light close to Jupiter, and, b) Gaia's astrometric capabilities under extremely difficult conditions such as those around a bright extended object. Inputs to our differential astrometric model are the CCD transit times as measured by the IDU system, transformed to field angles via AGIS geometric calibrations, and the commanded/nominal spacecraft attitude. [abridged] To illustrate the model we analyze Gaia astrometric measurements after their calibration through the latest cyclic EDR3/DR3 processing of the GAREQ event of Feb 2017. We use observations of the closest bright target star successfully observed several times by Gaia in close proximity to Jupiter and surrounding reference stars brighter than G<13 mag in transits leading up to the time of closest approach and on subsequent transits. The relativistic deflection signal is detected with a S/N of 50 at closest approach by the target star. This signal is the combined effect due to Jupiter and the Sun, mainly dominated by Jupiter's monopole, demonstrating Gaia's scientific performance under extreme observational conditions. It is an unprecedented detection for the following reasons: a) closest ever to Jupiter's limb (~7") in the optical, and, b) highest S/N at any wavelength. Finally, this work sets the stage for investigations into disentangling the relativistic quadrupole deflection due to Jupiter with future Gaia astrometric measurements.
description: 11 pages, 9 figures, accepted for publication in A&A
Ultrasensitive Sub-monolayer Palladium Induced Chirality Switching and Topological Evolution of Skyrmions
Creators: name: Chen, Gong
name: Ophus, Colin
name: Conte, Roberto Lo
name: Wiesendanger, Roland
name: Yin, Gen
name: Schmid, Andreas K.
name: Liu, Kai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Chiral spin textures are fundamentally interesting, with promise for device applications. Stabilizing chirality is conventionally achieved by introducing Dzyaloshinskii-Moriya interaction (DMI) in asymmetric multilayers where the thickness of each layer is at least a few monolayers. Here we report an ultrasensitive chirality switching in (Ni/Co)n multilayer induced by capping with only 0.22 monolayer of Pd. Using spin-polarized low-energy electron microscopy, we monitor the gradual evolution of domain walls from left-handed to right-handed Neel walls and quantify the DMI induced by the Pd capping layer. We also observe the chiral evolution of a skyrmion during the DMI switching, where no significant topological protection is found as the skyrmion winding number varies. This corresponds to a minimum energy cost of < 1 attojoule during the skyrmion chirality switching. Our results demonstrate the detailed chirality evolution within skyrmions during the DMI sign switching, which is relevant to practical applications of skyrmionic devices.
description: 16 pages, 3 figures
Many-electron integrals over gaussian basis functions. I. Recurrence relations for three-electron integrals
Creators: name: Barca, Giuseppe M. J.
name: Loos, Pierre-François
name: Gill, Peter M. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Explicitly-correlated F12 methods are becoming the first choice for high-accuracy molecular orbital calculations, and can often achieve chemical accuracy with relatively small gaussian basis sets. In most calculations, the many three- and four-electron integrals that formally appear in the theory are avoided through judicious use of resolutions of the identity (RI). However, in order not to jeopardize the intrinsic accuracy of the F12 wave function, the associated RI auxiliary basis set must be large. Here, inspired by the Head-Gordon-Pople (HGP) and PRISM algorithms for two-electron integrals, we present an algorithm to compute directly three-electron integrals over gaussian basis functions and a very general class of three-electron operators, without invoking RI approximations. A general methodology to derive vertical, transfer and horizontal recurrence relations is also presented.
description: 21 pages, 3 tables
Elementary excitations in a spin-orbit-coupled spin-1 Bose-Einstein condensate
Creators: name: Chen, Yuanyuan
name: Lyu, Hao
name: Xu, Yong
name: Zhang, Yongping
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: While a spin-orbit-coupled spin-1 Bose-Einstein condensate has been experimentally observed, its elementary excitations remain unclear in the stripe phase. Here, we systematically study the elementary excitations in three distinct phases of a spin-orbit-coupled spin-1 Bose-Einstein condensate. We find that the excitation spectrum as well as the corresponding static response function and structure factor depend strongly on spin-orbit coupling parameters such as the quadratic Zeeman field and the Rabi frequency. In the stripe phase, besides two gapless Goldstone modes, we show the existence of roton excitations. Finally, we demonstrate that quantum phase transitions between these different phases including the zero-momentum, plane wave and stripe phases are characterized by the sound velocities and the quantum depletion.
A study of the cardiovascular pharmacology of ST 91 : an analogue of chloridine with unusual properties
Creators: name: McLennan., Peter Leslie
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Specificities of Post-Islamism in Tunisia and Iran: the cases of Harakat Ennahda and the Neo-Shariati Movement
Creators: name: Tortolini, Alessia
name: Bontempo, Fulvio
Publisher: name: Zenodo
Year: 2023
Subjects: Post-Islamism, Tunisia, Iran

description: Due to the necessity for democratisation, political movements belonging to different backgrounds have shown post-Islamist tendencies the moment they found in Islam the ideological basis on which their democratic request rested. The cases of Tunisia and Iran are poignant. Harakat Ennahda and the neo-Shariati movement represent two peculiar examples of Sunni and Shiite understanding of popular democratic demands that had an impact on the political life of their countries. Thus, due to the different contexts in which they developed, they can highlight common points and differences and shed light on their relationship between democracy and Islam.
Gaia Search for stellar Companions of TESS Objects of Interest III
Creators: name: Mugrauer, M.
name: Zander, J.
name: Michel, K. -U.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The latest results from our ongoing multiplicity study of (Community) TESS Objects of Interest are presented, using astro- and photometric data from the ESA-Gaia mission, to detect stellar companions of these stars and characterize their properties. A total of 124 binary and 7 hierarchical triple star systems were detected among 2175 targets, whose multiplicity was investigated in the course of our survey, which are located at distances closer than about 500pc around the Sun. The detected companions and the targets are located at the same distance and share a common proper motion, as expected for components of gravitationally bound stellar systems, as proven with their accurate Gaia EDR3 astrometry. The companions have masses in the range between about 0.09 and 2.5$M_\odot$ and are most frequently found in the mass range between 0.15 and 0.8$M_\odot$. The companions exhibit projected separations to the targets between about 50 to 9700au and their frequency is the highest and constant up to about 500au, while it decreases for larger projected separations. In addition to mainly mid M to early K dwarfs, 4 white dwarf companions were detected in this survey, whose true nature could be identified with their photometric properties.
description: 25 pages, 10 figures, 5 tables, accepted for publication in AN
Calculating Soft Radiation at One Loop
Creators: name: Kasemets, Tomas
name: Waalewijn, Wouter J.
name: Zeune, Lisa
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present an efficient way to calculate the effect of soft QCD radiation at one loop, which is needed for predictions at next-to-next-to-leading logarithmic accuracy. We use rapidity coordinates and isolate the divergences in the integrand. By performing manipulations with cumulative variables, we avoid complications from plus distributions. We address rapidity divergences, divergences with an azimuthal dependence, complicated jet boundaries and multi-differential measurements. The process and measurements can be easily adjusted, as we demonstrate by reproducing many existing soft functions. The results for a general LHC process with multiple Wilson lines are obtained by treating Wilson lines that are not back-to-back using a boost. We also obtain, for the first time, the N-jettiness soft function for generic jet angularities, and the collinear-soft function for the measurement of two angularities.
description: 21 pages, 1 figure; v2: references added
Bragg-Cherenkov resonance and polaron-like decoupling of the Wigner solid on superfluid helium
Creators: name: Monarkha, Yuriy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Nonlinear polaron-like dynamics of the two-dimensional Wigner solid (WS) on superfluid $^{4}\mathrm{He}$ are theoretically analyzed in different models and transport regimes for their similarities and distinctions. The Bragg-Cherenkov (BC) resonant excitation of surface waves and WS decoupling from surface dimples were usually considered in terms of a dc transport model. At the same time, field-velocity characteristics of the WS are measured under ac conditions and presented for time-averaged quantities. Here the nonlinear equation of motion of the WS coupled to surface dimples is studied for ac conditions using two different approaches based on fixing the driving field or the output current. Both approaches are shown to give similar results for the first harmonics of major transport properties. In the ac theory, the BC-resonances for dimple inertia and the momentum relaxation rate have asymmetrical shapes, which is in contrast with the results of dc models. Even a quite low driving frequency is shown to affect the amplitude of the BC resonance and decoupling of the WS. Above the BC threshold, the effective mass of surface dimples as a function of the velocity amplitude strongly oscillates indicating multiple recoupling processes.
description: 10 pages, 8 figures
The developement of Findif code + first EMC3-Eirene comparison
Creators: name: Pełka, Grzegorz
name: Effenberg, Florian
name: Stępniewski, Wlodzimierz
name: Zagórski, Roman
Publisher: name: Zenodo
Year: 2019
Subjects: stellarator
wendelstein 7-x
w7-x
w7-x limiter
findif
emc3-eirene
3d modeling
scrape-off layer

description: Stellarator plasma edge modelling Introduction (machine, code) Transport model Local magnetic coordinates Wendelstein-7X vacuum field structure Mesh generation procedure Numerical approach Temperatures, density and velocity distributions
description: {"references": ["G. Pe\u0142ka et al 2019 Problems of Atomic Science and Technology 119(1):27-29", "F. Effenberg et al 2017 Nucl. Fusion 57 036021"]}
Adsorptive behaviour of nepheline syenite as a new adsorbent for removal of Ag (I) and Pb (II) ions from aqueous solution and industrial wastewater
Creators: name: Tahmasebipour, Milad
name: Khorshidi, Niyayesh
name: Azadmehr, AmirReza
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: The present study aims to assess the ability of nepheline syenite in removing the environmental pollution of Ag (I) and Pb (II).The characterisation of nepheline syenite was determined by SEM, BET, XRD, XRF and FTIR analyses. The batch system was carried out to examine the adsorption effect under the diverse amount of the nepheline syenite, the initial concentration of Ag (I) and Pb (II), the influence of contact time, and the pH of solution. The maximum Ag (I) and Pb (II) adsorption is achieved on 3 g of nepheline syenite at the pH value of 5.5, contact time of 90 min with an initial concentration of Pb (II) and Ag (I) 1000 mg/l. The equilibrium studies were examined based on two and three parameter models at different temperatures of 297, 303, 313 and 323 °K. The results fitted better with Freundlich model for Ag (I) adsorption at all temperatures and Pb (II) adsorption at lower temperatures (297 and 303°K). The maximum adsorption capacity for Pb (II) and Ag (I) ions were obtained 80.78 and 55.76 mg/g, respectively. The pseudo-second-order model exhibited the best fit with experimental data for both ions. Based on thermodynamic studies, the Ag (I) and Pb (II) adsorption onto nepheline syenite was exothermic, associative and non-spontaneous. Moreover, the low-cost nepheline syenite was applied to remove Ag (I) and Pb (II) ions from electroplating and battery recycling plant wastewaters which obtained promising results.
Towards information based spatiotemporal patterns as a foundation for agent representation in dynamical systems
Creators: name: Biehl, Martin
name: Ikegami, Takashi
name: Polani, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: G.3; I.2.11; I.5.1; J.3
subject: 92B20

description: We present some arguments why existing methods for representing agents fall short in applications crucial to artificial life. Using a thought experiment involving a fictitious dynamical systems model of the biosphere we argue that the metabolism, motility, and the concept of counterfactual variation should be compatible with any agent representation in dynamical systems. We then propose an information-theoretic notion of \emph{integrated spatiotemporal patterns} which we believe can serve as the basic building block of an agent definition. We argue that these patterns are capable of solving the problems mentioned before. We also test this in some preliminary experiments.
description: 8 pages, 3 figures
Ionized Outflows in Nearby Quasars are Poorly Coupled to their Host Galaxies
Creators: name: Molina, Juan
name: Ho, Luis C.
name: Wang, Ran
name: Shangguan, Jinyi
name: Bauer, Franz E.
name: Treister, Ezequiel
name: Zhuang, Ming-Yang
name: Ricci, Claudio
name: Bian, Fuyan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyze Multi Unit Spectroscopic Explorer observations of nine low-redshift (z < 0.1) Palomar-Green quasar host galaxies to investigate the spatial distribution and kinematics of the warm, ionized interstellar medium, with the goal of searching for and constraining the efficiency of active galactic nucleus (AGN) feedback. After separating the bright AGN from the starlight and nebular emission, we use pixel-wise, kpc-scale diagnostics to determine the underlying excitation mechanism of the line emission, and we measure the kinematics of the narrow-line region (NLR) to estimate the physical properties of the ionized outflows. The radial size of the NLR correlates with the AGN luminosity, reaching scales of $\sim 5\,$kpc and beyond. The geometry of the NLR is well-represented by a projected biconical structure, suggesting that the AGN radiation preferably escapes through the ionization cone. We find enhanced velocity dispersions ($\sim 100\,$km$\,$s$^{-1}$) traced by the H$α$ emission line in localized zones within the ionization cones. Interpreting these kinematic features as signatures of interaction between an AGN-driven ionized gas outflow and the host galaxy interstellar medium, we derive mass outflow rates of $\sim 0.008-1.6\, M_\odot \,$yr$^{-1}$ and kinetic injection rates of $\sim 10^{39}-10^{42} \,$erg$\,$s$^{-1}$, which yield extremely low coupling efficiencies of $\lesssim 10^{-3}$. These findings add to the growing body of recent observational evidence that AGN feedback is highly ineffective in the host galaxies of nearby AGNs.
description: 21 pages for main text, plus 15 pages for appendix, 13 figures, 3 Tables, accepted for publication in ApJ
Influences of COVID-19 pandemic on hospital-at-home functions in Finland – a questionnaire survey
Creators: name: Pöyhiä, Reino
name: Ohvanainen, Antti
name: Rapo-Pylkkö, Susanna
name: Niemi-Murola, Leila
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: To investigate functions of Finnish hospital-at-home (HAH) during the first year of COVID19-pandemic 2020 compared with the previous year 2019. Retrospective questionnaire survey. Finnish HAHs from Northern, Eastern, Southern, Western and Central parts of Finland participated in a questionnaire web-based questionnaire survey. The numbers of patients, activities and staff in 2019 and 2020, participation in the care of COVID19 patients, availability of protective clothing, attitudes of patients towards home care and development of new practices in the corona era were asked using both predefined and free questions. questionnaire was sent to the nurses and physicians in charge of the HAHs (N = 13), 77% responded. The HAHs provided services to a total of 1,196,783 inhabitants in their municipalities. There were no significant changes in the numbers of patients, staff or activities between the years 2019 and 2020. Although nurses did viral tests, COVID19 patients were cared only in 40% of HAHs. Protective clothing was well available. New instructions for infection management were created. The COVID-19 pandemic did not largely influence the functions of the examined Finnish HAHs in 2020. Most activities and patients’ characteristics remained unchanged from 2019. The role of HAHs should be further developed in Scandinavian countries, particularly during pandemics.Key PointsHospital-at-home (HAH) is a cost-effective model to provide hospital-like services.Data about the role of HAHs during COVID19 pandemics is lacking in the Nordic countries.This study shows that, the large Finnish municipal HAHs have been not influenced by pandemics. Hospital-at-home (HAH) is a cost-effective model to provide hospital-like services. Data about the role of HAHs during COVID19 pandemics is lacking in the Nordic countries. This study shows that, the large Finnish municipal HAHs have been not influenced by pandemics.
Second-harmonic response as a tool to detect spin textures in magnetic nodal-line semimetal Fe$_3$GeTe$_2$
Creators: name: Esin, V. D.
name: Avakyants, A. A.
name: Timonina, A. V.
name: Kolesnikov, N. N.
name: Deviatov, E. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We experimentally investigate second-harmonic transverse voltage response to ac electrical current for a magnetic nodal-line semimetal Fe$_3$GeTe$_2$. For zero magnetic field, the observed response depends as a square of the longitudinal current, as it should be expected for non-linear Hall effect. The magnetic field behavior is found to be sophisticated: while the first-harmonic response shows the known anomalous Hall hysteresis in FGT, the second-harmonic Hall voltage is characterized by the pronounced high-field hysteresis and flat ($B$-independent) region with curves touching at low fields. The high-field hysteresis strongly depends on the magnetic field sweep rate, so it reflects some slow relaxation process. For the lowest rates, it is also accomplished by multiple crossing points. Similar shape of the second-harmonic hysteresis is known for skyrmion spin textures in non-linear optics. Since skyrmions have been demonstrated for FGT by direct visualization techniques, we can connect the observed high-field relaxation with deformation of the skyrmion lattice. Thus, the second-harmonic Hall voltage response can be regarded as a tool to detect spin textures in transport experiments.
Håndtering av sensitive forskningsdata
Creators: name: UiT The Arctic University Of Norway
Publisher: name: Zenodo
Year: 2023
Subjects: RDM
forskningsdatahåndtering
FAIR data
forskningsdata
sensitive data
GDPR
CARE prinsipper

description: Kursmateriale for webinaret “Håndtering av sensitive forskningsdata”, del av en webinarserie om forskningsdatahåndtering ved UiT Norges Arktiske Universitet. For mer informasjon, besøk: site.uit.no/rdmtraining
The adverse side-effects of haloperidol & its metabolites : a mitochondrial in vitro study
Creators: name: McLennan., Holly
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Håndtering av data som trenger beskyttelse
Creators: name: UiT The Arctic University Of Norway
Publisher: name: Zenodo
Year: 2023
Subjects: RDM
forskningsdatahåndtering
FAIR data
forskningsdata
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description: Kursmateriale for webinaret “Håndtering av data som trenger beskyttelse”, del av en webinarserie om forskningsdatahåndtering ved UiT Norges Arktiske Universitet. For mer informasjon, besøk: site.uit.no/rdmtraining
Casimir interaction of rod-like particles in a two-dimensional critical system
Creators: name: Eisenriegler, E.
name: Burkhardt, T. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the fluctuation-induced interaction of two thin, rod-like particles or "needles" immersed in a two-dimensional critical fluid of Ising symmetry right at the critical point. Conformally mapping the plane containing the needles onto a simpler geometry in which the stress tensor is known, we analyze the force and torque between needles of arbitrary length, separation, and orientation. For infinite and semi-infinite needles we utilize the mapping of the plane bounded by the needles onto the half plane, and for two needles of finite length the mapping onto an annulus. For semi-infinite and infinite needles the force is expressed in terms of elementary functions, and we also obtain analytical results for the force and torque between needles of finite length with separation much greater than their length. Evaluating formulas in our approach numerically for several needle geometries and surface universality classes, we study the full crossover from small to large values of the separation to length ratio. In these two limits the numerical results agree with results for infinitely long needles and with predictions of the small-particle operator expansion, respectively.
description: 68 pages, 9 figures
Discovering strengths in patients with medically unexplained symptoms – a focus group study with general practitioners
Creators: name: Jøssang, Ingjerd Helene
name: Aamland, Aase
name: Hjörleifsson, Stefan
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Hematology

description: When patients suffer medically unexplained symptoms, consultations can be difficult and frustrating for both patient and GP. Acknowledging the patient as a co-subject can be particularly important when the symptoms remain unexplained. One way of seeing the patient as a co-subject is by recognizing any among their strong sides. To explore GPs’ experiences with discovering strengths in their patients with medically unexplained symptoms and elicit GPs’ reflections on how this might be useful. Four focus-groups with 17 GPs in Norway. Verbatim transcripts from the interviews were analyzed by systematic text condensation. Recollecting patients’ strengths was quiet challenging to the GPs. Gradually they nevertheless shared a range of examples, and many participants had experienced that knowing patients’ strong sides could make consultations less demanding, and sometimes enable the GP to provide better help. Identifying strengths in patients with unexplained symptoms required a deliberate effort on the GPs’ behalf, and this seemed to be a result of a strong focus on biomedical disease and loss of function. Acknowledging patients’ strong sides can bolster GPs’ ability to help patients with medically unexplained symptoms. However, the epistemic disadvantage of generalist expertise makes this hard to achieve. It is difficult for GPs to integrate person-centered perspectives with biomedical knowledge due to the privileged position of the latter. This seems to indicate a need for system-level innovations to increase the status of person-centered clinical work. Key pointsMUS is challenging for both patients and GPs mainly because of the incongruence between symptoms and the dominating biomedical model.GPs’ focus on pathology and loss of function can prevent them from discovering patients’ strengths.Awareness of patients’ strengths can make consultations less demanding for GPs and enable them to provide better help.A conscious effort is needed to discover patients’ strengths. MUS is challenging for both patients and GPs mainly because of the incongruence between symptoms and the dominating biomedical model. GPs’ focus on pathology and loss of function can prevent them from discovering patients’ strengths. Awareness of patients’ strengths can make consultations less demanding for GPs and enable them to provide better help. A conscious effort is needed to discover patients’ strengths.
Investigating the origin of X-ray jets: A case study of four hybrid morphology MOJAVE blazars
Creators: name: Sebastian, Biny
name: Kharb, Preeti
name: Lister, Matthew L.
name: Marshall, Herman L.
name: O'Dea, Christopher P.
name: Baum, Stefi A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have carried out Chandra, HST, and VLA observations of four MOJAVE blazars that have been previously classified as 'hybrid' (FR I/II) blazars in terms of radio morphology but not total radio power. The motivation of this study is to determine the X-ray emission mechanism in jets, these being different in FR I and FR II jets. We detected X-ray jet emission with sufficient SNR in two blazars viz. PKS 0215+015 and TXS 0730+504. We carried out spectral energy distribution (SED) modeling of the broad-band emission from the jet regions in these sources and found that a single synchrotron emission model is ruled out due to the deep upper limits obtained from HST optical and IR data. The IC- CMB model can reproduce the X-ray jet emission in both sources although the model requires extreme jet parameters. Both our sources possess FR II like radio powers and our results are consistent with previous studies suggesting that radio power is more important than FR morphology in determining the emission mechanism of X-ray jets.
description: Accepted for publication in ApJ
Fast Simulation of Particulate Suspensions Enabled by Graph Neural Network
Creators: name: Ma, Zhan
name: Ye, Zisheng
name: Pan, Wenxiao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Predicting the dynamic behaviors of particles in suspension subject to hydrodynamic interaction (HI) and external drive can be critical for many applications. By harvesting advanced deep learning techniques, the present work introduces a new framework, hydrodynamic interaction graph neural network (HIGNN), for inferring and predicting the particles' dynamics in Stokes suspensions. It overcomes the limitations of traditional approaches in computational efficiency, accuracy, and/or transferability. In particular, by uniting the data structure represented by a graph and the neural networks with learnable parameters, the HIGNN constructs surrogate modeling for the mobility tensor of particles which is the key to predicting the dynamics of particles subject to HI and external forces. To account for the many-body nature of HI, we generalize the state-of-the-art GNN by introducing higher-order connectivity into the graph and the corresponding convolutional operation. For training the HIGNN, we only need the data for a small number of particles in the domain of interest, and hence the training cost can be maintained low. Once constructed, the HIGNN permits fast predictions of the particles' velocities and is transferable to suspensions of different numbers/concentrations of particles in the same domain and to any external forcing. It has the ability to accurately capture both the long-range HI and short-range lubrication effects. We demonstrate the accuracy, efficiency, and transferability of the proposed HIGNN framework in a variety of systems. The requirement on computing resource is minimum: most simulations only require a desktop with one GPU; the simulations for a large suspension of 100,000 particles call for up to 6 GPUs.
The Case for Amending Copyright To Enable Sustainable Universal Open Access
Creators: name: Willinsky, John
Publisher: name: Zenodo
Year: 2023

description: Scholarly publishing’s principal stakeholders (including the big publishers) are now in agreement that “open access” to research publications will do more to promote scientific progress than the subscription journal system of the print era. Yet this open access consensus is not well served by copyright laws that encourage restricting, rather than opening, access to research. Up to this point stakeholders have largely pursued legal and extralegal workarounds—with embargoes, final drafts, illegal copies, and Creative Commons (CC) licenses—that are failing to deliver universal open access with all due speed and at a fair price. Rights retention efforts such as Secondary Publishing Rights, are of limited applicability and involve embargoes. It is time, then to consider a more substantial change in copyright reform for open science. As an example, this talk will consider the benefits of legislating statutory licensing (long used with music copyright) for research publications, in which case research’s institutional users and funders are required to fairly compensate scholarly publishers for immediate open access. Such a legal remedy is not too much to request, given how many digital-era reforms of copyright have taken place for every area of intellectual property except science, with such reforms working internationally, which would, of course, be the goal of this initiative.
Markers of neuropeptide Y utilisation in vagal afferent neurons and central autonomic nuclei
Creators: name: McLean., Karen Janelle
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
United Theory of Planet Formation (I): Tandem Regime
Creators: name: Ebisuzaki, Toshikazu
name: Imaeda, Yusuke
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We have obtained a steady-state, 1-D model of the accretion disk of a protostar taking into account the magneto-rotational instability (MRI). We find that the disk is divided into an outer turbulent region (OTR), a MRI suppressed region (MSR), and an inner turbulent region (ITR). The outer turbulent region is fully turbulent because of MRI. However, in the range, r_{out} (= 8 - 60 AU) from the central star, MRI is suppressed around the midplane of the gas disk and a quiet area without turbulence appears, because the degree of ionization of gas becomes low enough. The disk becomes fully turbulent again in the range r in (= 0.2 - 1 AU), which is called the inner turbulent region, because the midplane temperature become high enough (\gt 1000 K) due to gravitational energy release. Planetesimals are formed through gravitational instability at the two distinct sites, outer and inner MRI fronts (the boundaries between the MRI suppressed region (MSR) and the outer and inner turbulent regions), because of the radial concentration of the solid particles. At the outer MRI front, icy particles grow through low-velocity collisions into porous aggregates with low densities. They eventually undergo gravitational instability to form icy planetesimals. On the other hand, rocky particles accumulate at the inner MRI front, since their drift velocities turn outward due to the local maximum in gas pressure. They undergo gravitational instability in a sub-disk of pebbles to form rocky planetesimals at the inner MRI front. The tandem regime is consistent with the ABEL model, in which the Earth was initially formed as a completely volatile-free planet. The water and other volatile elements came later through the accretion of icy particles by the occasional scatterings in the outer regions.
description: 53 pages, 16 figures
Young, blue, and isolated stellar systems in the Virgo Cluster. I. 2-D Optical spectroscopy
Creators: name: Bellazzini, M.
name: Magrini, L.
name: Jones, M. G.
name: Sand, D. J.
name: Beccari, G.
name: Cresci, G.
name: Spekkens, K.
name: Karunakaran, A.
name: Adams, E. A. K.
name: Zaritsky, D.
name: Battaglia, G.
name: Seth, A.
name: Cannon, J. M.
name: Fuson, J.
name: Inoue, J. L.
name: Mutlu-Pakdil, B.
name: Guhathakurta, P.
name: Munoz, R.
name: Bennet, P.
name: Crnojevic, D.
name: Caldwell, N.
name: Strader, J.
name: Toloba, E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use panoramic optical spectroscopy obtained with MUSE@VLT to investigate the nature of five candidate extremely isolated low-mass star forming regions (Blue Candidates, BCs hereafter) toward the Virgo cluster of galaxies. Four of the five (BC1, BC3, BC4, BC5) are found to host several HII regions and to have radial velocities fully compatible with being part of the Virgo cluster. All the confirmed candidates have mean metallicity significantly in excess of that expected from their stellar mass, indicating that they originated from gas stripped from larger galaxies. In summary, these four candidates share the properties of the prototype system SECCO 1, suggesting the possible emergence of a new class of stellar systems, intimately linked to the complex duty cycle of gas within clusters of galaxies. A thorough discussion on the nature and evolution of these objects is presented in a companion paper, where the results obtained here from MUSE data are complemented with Hubble Space Telescope (optical) and Very Large Array (HI) observations.
description: accepted for publication by ApJ. Latex. 16 pages, 8 color figures