cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Πρόσβαση και προτιμήσεις μεταναστών στις υπηρεσίες υγείας
title: Immigrants' access and preferences in health services
titleType: AlternativeTitle
Creators: name: Ζουρνατζή, Λυγερή
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Δημόσια Υγεία
Υπηρεσίες Υγείας
Πρόσβαση
Μεταναστευτικές ροές
Health services
Immigrants' access
Preferences

description: Εισαγωγή: Η έρευνα για την ανάλυση των κοινωνικών και οικονομικών διαστάσεων του φαινομένου της μετανάστευσης, ιδιαίτερα κατά τη διάρκεια της τελευταίας δεκαετίας συγκεντρώνει μεγάλο ακαδημαϊκό ενδιαφέρον, με τις μελέτες γύρω από τις υπηρεσίες υγείας των μεταναστών στην Ελλάδα . Σκοπός της προτεινόμενης μελέτης ήταν η ανάλυση των παραγόντων οι οποίοι επηρεάζουν την προσβασιμότητα και τις προτιμήσεις των μεταναστών στις υπηρεσίες υγείας στην Ελλάδα, με βάση την υπόθεση ότι η χρήση υπηρεσιών υγείας εξαρτάται από την υποκειμενική αντίληψη των εμποδίων πρόσβασης, και τις προτιμήσεις των συμμετεχόντων στην έρευνα. Μεθοδολογία: Πραγματοποιήθηκε ποσοτική έρευνα βασισμένη σε συγχρονικό σχεδιασμό. Η συλλογή των δεδομένων βασίστηκε σε ερωτηματολόγιο αυτοαναφοράς το οποίο διανεμήθηκε σε δείγμα 61 μεταναστών που εκδήλωσαν ενδιαφέρον συμμετοχής στην έρευνα. Τα δεδομένα που συλλέχθηκαν κωδικοποιήθηκαν και αναλύθηκαν στο λογισμικό SPSSSPSS. Η σχέση μεταξυ του κοινωνικο-οικονομικού προφίλ των μεταναστών και της πρόσβασης στις υπηρεσίες υγείας αξιολογήθηκε με βάση τον έλεγχο ανεξαρτησίας χ2. Αποτελέσματα: Τα αποτελέσματα της έρευνας έδειξαν πως το 47.5% των μεταναστών είχαν βιώσει ανεκπλήρωτες ανάγκες στον τομέα της παροχής υπηρεσιών υγείας τους τελευταίους 12 μήνες. Οι κυριότεροι λόγοι για τους οποίους οι μετανάστες βίωσαν αυτές τις ανεκπλήρωτες ανάγκες ήταν η έλλειψη γνώσης ή/και πληροφόρησης για το πού πρέπει να απευθυνθούν, η έλλειψη χρημάτων για να καλύψουν τις ιατρικές δαπάνες και η έλλειψη ασφάλισης. Αντίστοιχα, καταγράφηκε υψηλός βαθμός προτίμησης των μεταναστών τόσο στις δημόσιες όσο και στις ιδιωτικές υπηρεσίες υγείας. Γενικότερα, οι μετανάστες προτιμούν τις δημόσιες υπηρεσίες υγείας λόγω του μηδαμινού οικονομικού κόστους και της ποιότητας των υπηρεσιών. Αντίστοιχα, οι μετανάστες προτιμούν τις ιδιωτικές υπηρεσίες υγείας λόγω της γρήγορης εξυπηρέτησης και της ποιότητας των υπηρεσιών. Τέλος, από τη μελέτη προέκυψε πως το σημαντικότερο εμπόδιο είναι οι μεγάλοι χρόνοι αναμονής και η έλλειψη διαθεσιμότητας των υπηρεσιών όταν τις χρειάζονται. Συμπεράσματα: Τα ευρήματα της διπλωματικής εργασίας δείχνουν πως η πρόσβαση των μεταναστών στις υπηρεσίες υγείας έχει βελτιωθεί αρκετά τα τελευταία έτη. Απαιτούνται περισσότερες προσπάθειες ώστε όλο και μεγαλύτερο ποσοστό μεταναστών να λαμβάνει τις υπηρεσίες υγείας που χρειάζονται. Λέξεις κλειδιά: Πρόσβαση στις Υπηρεσίες Υγείας, Προτιμήσεις στις Υπηρεσίες Υγείας, Δημόσια Υγεία, Μεταναστευτικές ροές
Channeling Effect in Polycrystalline Deuterium-Saturated CVD Diamond Target Bombarded by Deuterium Ion Beam
Creators: name: Bagulya, A. V.
name: Dalkarov, O. D.
name: Negodaev, M. A.
name: Rusetskii, A. S.
name: Chubenko, A. P.
name: Ralchenko, V. G.
name: Bolshakov, A. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: At the ion accelerator HELIS at the LPI, the neutron yield is investigated in DD reactions within a polycrystalline deuterium-saturated CVD diamond, during an irradiation of its surface by a deuterium ion beam with the energy less than 30 keV. The measurements of the neutron flux in the beam direction are performed in dependence on the target angle, \b{eta}, with respect to the beam axis. These measurements are performed using a multichannel detector based on He3 counters. A significant anisotropy in neutron yield is observed, it was higher by a factor of 3 at \b{eta}=0 compared to that at \b{eta} = +-45°. The possible reasons for the anisotropy, including ion channeling, are discussed.
description: 8 pages, 3 figures, preprint LPI
title: La figure de l'enseignant.e comme possible déclencheur de l'amour du savoir et du plaisir d'apprendre : Le rôle du corps dans l'exercice du métier d'enseignant.
title: La figure de l'enseignant.e comme possible déclencheur de l'amour du savoir et du plaisir d'apprendre : Le rôle du corps dans l'exercice du métier d'enseignant.
titleType: AlternativeTitle
Creators: name: Prod'Hom, Margot Aliocha
Publisher: name: Unknown
Year: 0
Subjects: subject: Théâtre de mouvement
subject: Figure de l’enseignant
subject: Incarnation
subject: Philosophie
subject: Corps pédagogique
subject: Rapport au savoir

description: L’hypothèse défendue dans ce travail postule une importance de la dimension incarnée de l’enseignant dans le processus d’apprentissage dans la mesure où elle serait le potentiel levier du développement, chez les élèves, d’un plaisir d’apprendre et le lieu d’une mimétique de l’amour du savoir. Aux yeux des élèves, l’enseignant apparaît comme une incarnation du savoir qu’il représente et, à ce titre, il peut témoigner de l’enrichissement, de l’amélioration et du bien-être qui peut représenter ce savoir pour la vie. Autrement dit, un enseignant dont la figure (incarnation, corporéité et compétences sociales corolaires) reflète un savoir vivant, dynamique, séduisant, a des chances de susciter chez les élèves une association plaisir-savoir, c’est-à-dire d’éveiller une curiosité, de déclencher un intérêt contribuant ainsi à l’éducation au sens large. L’idée selon laquelle la notion d’incarnation serait une composante fondamentale, un instrument au service du savoir, dans le processus d’apprentissage, suggère qu’elle devrait faire partie intégrante de la formation des enseignants, autant sur le plan théorique que pratique. Si force est de constater que ce n’est pas encore le cas, le théâtre de mouvement représente, à l’égard de la dimension pédagogique du corps des enseignants, un outil puissant que les écoles pédagogiques pourraient employer de manière orientée et pertinente. Une fois que l’on pose l’hypothèse selon laquelle les élèves apprendraient, dans un processus mimétique, une certaine attitude vis-à-vis du savoir, à partir du rapport de l’enseignant à son propre corps, on ne peut plus faire l’économie d’une réflexion sur les moyens de travailler cet aspect de l’enseignement. Or, dans ce contexte, il semble pertinent d’embrayer un rapprochement entre le phénomène pédagogique et le phénomène théâtral suggérant que le travail mené sur le corps du comédien dans le cadre de sa formation indique une direction possible pour l’élaboration d’une didactique de la dimension pédagogique du corps des enseignants.
Time-resolved infrared emission from radiation-driven central obscuring structures in Active Galactic Nuclei
Creators: name: Schartmann, M.
name: Wada, K.
name: Prieto, M. A.
name: Burkert, A.
name: Tristram, K. R. W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The central engines of Seyfert galaxies are thought to be enshrouded by geometrically thick gas and dust structures. In this article, we derive observable properties for a self-consistent model of such toroidal gas and dust distributions, where the geometrical thickness is achieved and maintained with the help of X-ray heating and radiation pressure due to the central engine. Spectral energy distributions (SEDs) and images are obtained with the help of dust continuum radiative transfer calculations with RADMC-3D. For the first time, we are able to present time-resolved SEDs and images for a physical model of the central obscurer. Temporal changes are mostly visible at shorter wavelengths, close to the combined peak of the dust opacity as well as the central source spectrum and are caused by variations in the column densities of the generated outflow. Due to the three-component morphology of the hydrodynamical models -- a thin disc with high density filaments, a surrounding fluffy component (the obscurer) and a low density outflow along the rotation axis -- we find dramatic differences depending on wavelength: whereas the mid-infrared images are dominated by the elongated appearance of the outflow cone, the long wavelength emission is mainly given by the cold and dense disc component. Overall, we find good agreement with observed characteristics, especially for those models, which show clear outflow cones in combination with a geometrically thick distribution of gas and dust, as well as a geometrically thin, but high column density disc in the equatorial plane.
description: 16 pages, 12 figures, accepted for publication in MNRAS
Nonlinear sigma models at nonzero chemical potential: breaking up instantons and the phase diagram
Creators: name: Bruckmann, Falk.
name: Sulejmanpasic, Tin
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We consider asymptotically free nonlinear sigma models in two dimensions which, due to their internal symmetries, allow for a conserved charge. Introducing nonzero chemical potential for the SO(2) subgroup of the symmetry group, we discuss two expected phase transitions, which are related to charge condensation and percolation of merons, respectively. The latter are topological objects with half integer charge similar to vortices in the abelianized \emph{O(2)} theory, that emerge for large chemical potentials due to the suppression of the complementary field components. We conjecture a particular ordering of these transitions supported by large N calculations, and discuss dualities helpful for the understanding of these systems in the continuum and on the lattice. In conclusion we suggest that similar behavior is to be expected in QCD at finite density.
description: 12 pages, 3 figures. References and minor changes updated in this version
Platelet-derived growth factor-modulated proteins: constitutive synthesis by a transformed cell line.
Creators: name: Pledger, W. J.
name: Hart, C. A.
name: Scher, C. D.
name: Locatell, K. L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: Platelet-derived growth factor (PDGF) initiates replication of density-arrested BALB/c-3T3 mouse cells by rendering them "competent" to respond to factors contained in plasma. Treatment of quiescent cells with PDGF rapidly stimulates the preferential synthesis of several cytoplasmic proteins (molecular weights 29,000 to 70,000). Four of these proteins were noted within 1.5 hr of PDGF addition and one (pI) within 40 min. Inhibitors of RNA synthesis prevented the synthesis of these proteins. Both the synthesis of pI and the stimulation of DNA synthesis displayed a similar dose response to PDGF concentration. Pituitary fibroblast growth factor, which also induces competence, stimulated pI and pII synthesis. Plasma, epidermal growth factor, or insulin, which do not induce competence, did not stimulate selective synthesis of these proteins. A transformed variant of BALB/c-3T3 cells, which has retained the growth requirement for plasma factors but lost the requirement for PDGF, synthesizes these PDGF-modulated proteins constitutively.
Emergence of chaos in interacting communities
Creators: name: Ostilli, M.
name: Figueiredo, W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 34H10, 60Gxx, 91Bxx, 91Cxx, 91Fxx

description: We introduce a simple dynamical model of two interacting communities whose elements are subject to stochastic discrete-time updates governed by only bilinear interactions. When the intra- and inter-couplings are cooperative, the two communities reach asymptotically an equilibrium state. However, when the intra- or inter-couplings are anti-cooperative, the system may remain in perpetual oscillations and, when the coupling values belong to certain intervals, two possible scenarios arise, characterized either by erratic aperiodic trajectories and high sensitiveness to small changes of the couplings, or by chaotic trajectories and bifurcation cascades. Quite interestingly, we find out that even a moderate consensus in one single community can remove the chaos. Connections of the model with interacting stock markets are discussed.
description: 6 pages, 4 figures
Protocol for a Rapid Scoping Review of Creativity and Wellbeing
Creators: name: Mansfield, Louise
Publisher: name: Brunel University London
Year: 2023
Subjects: classificationCode: 369999
subject: Other creative arts and writing not elsewhere classified

description: Brunel University London researchers will conduct a rapid scoping review of the evidence on ‘Creativity and Pathways to Subjective Wellbeing’. The project dates are 5/9/23-8/01/24.We will follow established principles for systematic scoping reviews set out by the Joanna Brigg’s Institute (see Peters et al., 2020). The review will adhere to the PRISMA-ScR checklist for scoping reviews. It will map the evidence on creativity and pathways to subjective wellbeing to identify key concepts, clarify working definitions, outline key characteristics of creativity related to subjective wellbeing, and determine the scope and quality of evidence available to inform policy, practice or future systematic review work.Through the scoping review the research team will synthesise findings on mechanisms of change, drivers and barriers to realising wellbeing improvements through creativity. Drawing on realist strategies for building evidence, we will identify the psycho-sociological mechanisms (M) that elicit wellbeing outcomes (O) in specific contexts (C) in which creativity occurs (Davidoff, 2019; De Brun and McAuliffe, 2020; de Souza, 2013; Pawson and Tilley, 1997). In this way we will explore the following context-mechanism-outcome configuration (CMOc) of the creativity-culture-wellbeing relationship: (i) context (i.e. local culture, space/place, delivery practices), (ii) mechanisms of wellbeing (i.e. the underlying forces/structures such as behaviours, brain mechanisms, motivations/incentives, agency, community norms, resourcing, politics), and (iii) outcomes (i.e. wellbeing improvements and negative impacts).We will produce a visualisation of the key pathways or Context-Mechanism-Outcome configurations in a Pathways Model diagram, or similar visual representation. Our work will be framed by a coproduction approach and we will share and discuss our methods, findings and outputs with the WWCW and the Advisory Group (AG). We present a protocol for the rapid scoping review below. This is for discussion and refinement with the WWCW and AG.
Counter-ions between or at asymmetrically charged walls: 2D free-fermion point
Creators: name: Samaj, L.
name: Trizac, E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This work contributes to the problem of determining effective interaction between asymmetrically (likely or oppositely) charged objects whose total charge is neutralized by mobile pointlike counter-ions of the same charge, the whole system being in thermal equilibrium. The problem is formulated in two spatial dimensions with logarithmic Coulomb interactions. The charged objects correspond to two parallel lines at distance d, with fixed line charge densities. Two versions of the model are considered: the standard "unconstrained" one with particles moving freely between the lines and the "constrained" one with particles confined to the lines. We solve exactly both systems at the free-fermion coupling and compare the results for the pressure (i.e. the force between the lines per unit length of one of the lines) with the mean-field Poisson-Boltzmann solution. For the unconstrained model, the large-d asymptotic behaviour of the free-fermion pressure differs from that predicted by the mean-field theory. For the constrained model, the asymptotic pressure coincides with the attractive van der Waals-Casimir fluctuational force. For both models, there are fundamental differences between the cases of likely-charged and oppositely-charged lines, the latter case corresponding at large distances d to a capacitor.
Is polio making a comeback? The cost of vaccine hesitancy and the disparity in vaccine coverage
Creators: name: Costa, Thalles Guilarducci
name: Silva, Rizia Rocha
name: De Freitas, João Victor Rosa
name: Vancini, Rodrigo Luiz
name: Andrade, Marília Santos
name: De Lira, Claudio Andre Barbosa
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2023
Subjects: polio campaign monitoring
eradication
coverage vaccination
infectious disease
poliovirus

description: EXCLI Journal; 22:Doc1109; ISSN 1611-2156
Design and optimisation of a heliostat field and a sodium receiver for next-generation CSP plants
Creators: name: Wang, Shuang
Publisher: name: The Australian National University
Year: 2022

description: The heliostat field and receiver subsystems are crucial in a concentrated solar power (CSP) plant, where solar irradiance is converted into thermal power. It is essential to optimise the subsystems at the design stage to maximise the energy yield and to minimise the cost. This thesis presents different modelling methodologies and case studies for the optimal design of the heliostat field and tubular receiver subsystems for next-generation CSP plants. Firstly, heliostat aiming strategy affects the thermo-mechanical performance of the receiver and is a key factor for receiver reliability and interactions between the field and receiver. For the external cylindrical receiver, the modified deviation-based aiming (MDBA) method is proposed as a fast and accurate heliostat aiming strategy based on ray-tracing. The new aiming model enables efficient use of ray-tracing together with receiver thermal and mechanical models to closely match the flux distribution to local values of allowable flux on the receiver. The MDBA method maximises the thermal output while respecting thermal stress limits on the receiver, and is then coupled to a new co-optimisation technique to design the heliostat field and receiver together. In the co-optimisation method, instantaneous optical, thermal and mechanical models are integrated in an annual system-level model to capture the highly transient behaviour of the subsystem, and the design is optimised using a genetic algorithm. Several techniques are implemented to make this complex and computationally expensive problem tractable. The co-optimisation method can be used to maximise the annual solar-to-thermal efficiency or to minimise the levelised cost of energy (LCOE). It is found that the receiver flow configuration, including the flow path pattern and pipe diameter, affects receiver performance. Hence, the proposed integrated design methodology is used to explore the optimal flow configuration for a receiver with an oversized field at both design-point and annual conditions. The results show that the optimal receiver flow configuration achieves a low fraction of heliostat defocusing with a 20% oversized field, although the benefits on the annual energy yield are weakened by capacity limits of other system components. Therefore, a system-level optimisation is implemented with relative sizing of the field, receiver, sodium-salt heat exchanger, storage and power block to achieve the lowest LCOE. An iterative surrogate-based optimisation (SBO) technique is proposed to accelerate the optimisation process. The best achieved LCOE is below 60.0 USD/MWh, within the range targeted by the DoE Gen3 program. A high capacity factor of 83.2% is achieved in the optimal design. A further topic in this PhD thesis is the option of spillage skirts and secondary reflectors for performance enhancement of a cavity receiver.
Investigation of using BSPT for ring-dot piezoelectric transformers for use in high-temperature resonant power supplies
Creators: name: Forrester, Jack
name: Li, Linhao
name: Davidson, Jonathan
name: Foster, Martin
name: Stone, David
name: Reaney, Ian
Publisher: name: The University of Sheffield
Year: 2023
Subjects: classificationCode: 400899
subject: Electrical engineering not elsewhere classified

description: SiC and GaN devices are gaining in popularity in both research and commercial applications. One of the many benefits of these devices is the possibility of power converter operation at temperatures in excess of that possible with Si-based devices (>200°C). A bismuth scandium lead titanate (BSPT) piezoelectric transformer is analysed for use in high temperature (up to 250°C), resonant converters using impedance spectroscopy and power converter measurements. The PT shows declining losses with temperatures during testing, translating into an improvement of 15% points in efficiency whilst more than doubling the output power across the temperature range. A peak performance of 0.7W output power and 53% efficiency at 225°C was achieved, giving comparable performance to previous work but at higher temperatures.Presented at HiTEN 2022, Oxford (part of IMAPs conference series)Corresponding author: Jack Forrester
Cutting out the middleperson: An interests-based account of animals' legal inclusion
Creators: name: Rutledge-Prior, Serrin
Publisher: name: The Australian National University
Year: 2022

description: What are the key structural barriers that are preventing animals from gaining access to greater legal protection and, thus, greater justice? Animals are protected under welfare and anti-cruelty laws around the world and can even, under an interest theory account of rights, be said to have legal rights. Nevertheless, animals' legal inclusion remains severely limited in a range of ways: welfare laws protect economically and socially valuable practices that cause immense suffering to animals, the laws are poorly enforced by regulatory bodies, and animals have virtually no recourse to civil law remedies. This thesis focuses on the last of these problems, as one that has so far been under-researched in political theory. One solution that has been proposed is to have (at least certain) animals recognised as "legal persons", alongside humans and corporations. This proposal, however, is undesirable in that legal personhood is an exclusionary concept that is poorly understood, and inconsistently applied, within the legal system. This thesis instead suggests that the legal system recognise a new model of inclusion that is flexible enough to encompass the interests of humans, animals, and non-animal entities. The interest principle of legal inclusion holds that no entity with judicable interests is to be excluded from seeking justice through the legal system - especially not on the basis of their species status. This principle, in relying on existing legal tools and concepts that can straightforwardly be applied to all interest-bearing entities, provides a firmer path forward for animals' legal inclusion than does that of legal personhood.
Electric Conductivity from the solution of the Relativistic Boltzmann Equation
Creators: name: Puglisi, A.
name: Plumari, S.
name: Greco, V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present numerical results of electric conductivity $σ_{el}$ of a fluid obtained solving the Relativistic Transport Boltzmann equation in a box with periodic boundary conditions. We compute $σ_{el}$ using two methods: the definition itself, i.e. applying an external electric field, and the evaluation of the Green-Kubo relation based on the time evolution of the current-current correlator. We find a very good agreement between the two methods. We also compare numerical results with analytic formulas in Relaxation Time Approximation (RTA) where the relaxation time for $σ_{el}$ is determined by the transport cross section $σ_{tr}$, i.e. the differential cross section weighted with the collisional momentum transfer. We investigate the electric conductivity dependence on the microscopic details of the 2-body scatterings: isotropic and anisotropic cross-section, and massless and massive particles. We find that the RTA underestimates considerably $σ_{el}$; for example at screening masses $m_D \sim \,T$ such underestimation can be as large as a factor of 2. Furthermore, we study a more realistic case for a quark-gluon system (QGP) considering both a quasi-particle model, tuned to lQCD thermodynamics, as well as the case of a pQCD gas with running coupling. Also for these cases more directly related to the description of the QGP system, we find that RTA significantly underestimate the $σ_{el}$ by about a $60-80\%$.
description: 9 pages, 9 figures
Legacy ExtraGalactic UV Survey (LEGUS) with The Hubble Space Telescope. I. Survey Description
Creators: name: Calzetti, D.
name: Lee, J. C.
name: Sabbi, E.
name: Adamo, A.
name: Smith, L. J.
name: Andrews, J. E.
name: Ubeda, L.
name: Bright, S. N.
name: Thilker, D.
name: Aloisi, A.
name: Brown, T. M.
name: Chandar, R.
name: Christian, C.
name: Cignoni, M.
name: Clayton, G. C.
name: da Silva, R.
name: de Mink, S. E.
name: Dobbs, C.
name: Elmegreen, B. G.
name: Elmegreen, D. M.
name: Evans, A. S.
name: Fumagalli, M.
name: Gallagher, J. S.
name: Gouliermis, D. A.
name: Grebel, E. K.
name: Herrero, A.
name: Hunter, D. A.
name: Johnson, K. E.
name: Kennicutt, R. C.
name: Kim, H.
name: Krumholz, M. R.
name: Lennon, D.
name: Levay, K.
name: Martin, C.
name: Nair, P.
name: Nota, A.
name: Oestlin, G.
name: Pellerin, A.
name: Prieto, J.
name: Regan, M. W.
name: Ryon, J. E.
name: Schaerer, D.
name: Schiminovich, D.
name: Tosi, M.
name: Van Dyk, S. D.
name: Walterbos, R.
name: Whitmore, B. C.
name: Wofford, A.
name: .
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Legacy ExtraGalactic UV Survey (LEGUS) is a Cycle 21 Treasury program on the Hubble Space Telescope, aimed at the investigation of star formation and its relation with galactic environment in nearby galaxies, from the scales of individual stars to those of ~kpc-size clustered structures. Five-band imaging, from the near-ultraviolet to the I-band, with the Wide Field Camera 3, plus parallel optical imaging with the Advanced Camera for Surveys, is being collected for selected pointings of 50 galaxies within the local 12 Mpc. The filters used for the observations with the Wide Field Camera 3 are: F275W(2,704 A), F336W(3,355 A), F438W(4,325 A), F555W(5,308 A), and F814W(8,024 A); the parallel observations with the Advanced Camera for Surveys use the filters: F435W(4,328 A), F606W(5,921 A), and F814W(8,057 A). The multi-band images are yielding accurate recent (
description: 67 pages, 9 figures; accepted for publication on the Astronomical Journal
Rate of lateral diffusion of intramembrane particles: measurement by electrophoretic displacement and rerandomization.
Creators: name: Hackenbrock, C. R.
name: Sowers, A. E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: A method combining electrophoresis and freeze-fracture electron microscopy is described; the method was used to determine the lateral diffusion coefficient of intramembrane particles (integral proteins) in the mitochondrial inner membrane. An electric current was passed through microsuspensions of purified, spherical inner membranes at pH 7.4, which caused an electrophoretic migration of intramembrane particles in the membrane plane into a single, crowded patch facing the positive electrode. The membrane microsuspensions were quick-frozen at specified times after the packed particles were released from the electrophoretic force and while the particles were diffusing back to a random distribution. Observed concentration gradients of intramembrane particles during this time were quantitatively compared with and found to follow a mathematical model for Fickian diffusion of particles on a spherical membrane. The results determine the kinetics of free diffusion of integral proteins at the resolution of individual proteins. The diffusion coefficient of the integral proteins in the mitochondrial inner membrane was determined to be 8.3 X 10(-10) cm2/sec at 20 degrees C, from which a root-mean-square displacement of 57 nm in 10 msec is predicted.
On Cluelessness
Creators: name: Williamson, Patrick
Publisher: name: The Australian National University
Year: 2022

description: This thesis explores the significance of our cluelessness for the general project of moral philosophy. In the first chapter I continue a tradition which uses the facts of our cluelessness to argue against consequentialist accounts of right action. In the second chapter I develop a new cluelessness argument against recently popular relevance approaches to claims aggregation, approaches under which agents are required to maximise the strength-weighted satisfaction of relevant claims upon their conduct. In the third chapter I respond to the Paralysis Argument, a novel objection developed by Andreas Mogensen & William MacAskill which uses the facts of our cluelessness to undercut the traditional non-consequentialist distinction between reasons for doing versus allowing harm. In responding to the Paralysis Argument, I offer a refined version of the doctrine of doing and allowing harm, one which gives intuitively plausible verdicts in cases of risk and uncertainty. In the fourth chapter I examine whether we might sometimes interpret cluelessness arguments as action-guidingness objections: under action-guidingness objections, a particular moral principle is said to be incorrect insofar as that principle cannot be used by suitably motivated agents in regulating their conduct. I argue against the general merits of action-guidingness objections. I suggest that cluelessness arguments against consequentialism, for instance, can instead be given a more fruitful epistemic reading, a reading I defend in closing.
Structure of the fibrin protofibril.
Creators: name: Hantgan, R. R.
name: Fowler, W. E.
name: Erickson, H. P.
name: Hermans, J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: We identified the two-stranded fibrin protofibril and studied its structure in electron micrographs of negatively stained specimens. Based on these images and on considerations of symmetry, we constructed a model of the protofibril in which the two strands of trinodular fibrin molecules are related by a two-fold screw axis between the strands and two-fold axes perpendicular to them. The two strands are held together by staggered lateral contacts between the central nodules of one strand and outer nodules of the other. The molecules within a strand are joined by longitudinal contacts between outer nodules. This interpretation of the structure of protofibrils is supported by images of trimer complexes whose preparation and structure are described here, in which the central nodule of a fibrin monomer is attached to the crosslinked outer nodules of two other molecules. We conclude that the association of protofibrils to form thicker fibers must involve a second type of lateral contact, probably between outer nodules of adjacent, in-register strands. In total, we identify three intermolecular contacts involved in the polymerization of fibrin.
Spectral edge regularity of magnetic Hamiltonians
Creators: name: Cornean, Horia D.
name: Purice, Radu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We analyse the spectral edge regularity of a large class of magnetic Hamiltonians when the perturbation is generated by a globally bounded magnetic field. We can prove Lipschitz regularity of spectral edges if the magnetic field perturbation is either constant or slowly variable. We also recover an older result by G. Nenciu who proved Lipschitz regularity up to a logarithmic factor for general globally bounded magnetic field perturbations.
description: 18 pages, submitted
The kinetic energy change on covalent bond formation
Creators: name: Mucci, J. F.
name: March, N. H.
name: Parr, R. G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: Stimulated by an analysis of the classical molecular orbital and valence bond descriptions of the two-electron normal covalent bond (both faulty), the argument is made that there exist good representations of the kinetic energy change DeltaT, on nonpolar covalent bond formation in a diatomic molecule, of the form DeltaT(R) = integralF(R - r')S(r')dr'. Here F is a nonlinear response function which itself involves the overlap S. The kinetic change is known to satisfy the sum rule integral(0) (infinity)DeltaT(R)dR = Z(alpha)Z(beta) exactly; it is shown how this can be built into the treatment by the use of Fourier transform methods. Also considered is integral(0) (infinity)DeltaT(R)R(2)dR, which is an important additional property of the kinetic energy change. Representation of DeltaT(R) as a Morse function, already known to be highly accurate, is shown to exactly conform to the proposed form.
Operator Product Expansion and Conservation Laws in Non-Relativistic Conformal Field Theories
Creators: name: Golkar, Siavash
name: Son, Dam T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We explore the consequences of conformal symmetry for the operator product expansions in nonrelativistic field theories. Similar to the relativistic case, the OPE coefficients of descendants are related to that of the primary. However, unlike relativistic CFTs the 3-point function of primaries is not completely specified by conformal symmetry. Here, we show that the 3-point function between operators with nonzero particle number, where (at least) one operator has the lowest dimension allowed by unitarity, is determined up to a numerical coefficient. We also look at the structure of the family tree of primaries with zero particle number and discuss the presence of conservation laws in this sector.
description: 11 pages, 1 figure. V2 added references
Exploring the environmental impacts associated with anaerobic digestate application to grassland soils
Creators: name: Cattin, Marta
Publisher: name: Lancaster University
Year: 2022

description: Optimising the application of digestate within intensive agriculture has the potential to reduce the synthesis and use of inorganic fertilisers. Decoupling future agricultural production from a reliance on inorganic fertiliser would bring a wide range of economic, environmental and geopolitical benefits, especially since the global demand for food is predicted to rise sharply by 2050. However, there remain many uncertainties surrounding the environmental impact of digestate usage in agriculture, especially after application of different physical fractions of digestate to land (whole [WD], liquid [LD] and solid [SD]). These include effects of digestate on soil microbial communities, greenhouse gas (GHG) emissions and the leaching of nutrients to the subsurface. In this context, the thesis aimed to evaluate environmental impacts of different digestate fractions using a range of laboratory and field experimental approaches, focussing on: a) the soil microbial community composition and carbon use efficiency (CUE); b) GHG emissions and how digestate application rates can affect GHG emissions; and c) the export of multiple phosphorus (P) and nitrogen (N) fractions via leaching. All digestate fractions increased GHG emissions from grassland soils compared to control treatments, especially when application rates of LD and WD fractions were increased. However, the application of SD positively increased the soil fungal and bacterial biomass, resulting in a positive CUE when compared to WD. Surface application of WD and SD to grassland soil significantly increased the leaching of a range of P fractions, compared to both control and LD treatments, although all digestate fractions reduced the leaching of N compared to inorganic fertiliser treatments. The results reported in this thesis highlight the need to plan the application of different fractions of digestate to land carefully, following best agricultural practices to minimise adverse environmental impacts, improve a broad range of soil health parameters and, ultimately, derive maximum agronomic benefit from the return of digestate to land.
Von Willebrand syndrome induced by a Bothrops venom factor: bioassay for venom coagglutinin.
Creators: name: Potter, J. Y.
name: Read, M. S.
name: Brinkhous, K. M.
name: Barnes, D. S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: Hereditary deficiency of the macromolecular Factor VIII complex results in classic von Willebrand disease in man and animals, a bleeder state characterized by loss of the multiple biologic activities associated with the Factor VIII complex, including the platelet-aggregating von Willebrand factor. The bleeding time is also long. Venom coagglutinin, a Bothrops factor that causes platelet aggregation in vitro, depletes the plasma of its von Willebrand factor. The rate of platelet aggregation is a function of the amount of the coagglutinin present. Based on this observation, a sensitive and quantitative assay for the venom coagglutinin was developed. We administered the purified Bothrops factor to normal pigs and dogs and induced a von Willebrand syndrome similar to the inherited disease. The plasma von Willebrand factor was severely depleted; the antihemophilic factor and the Factor VIII-related antigen were not depleted as much. The bleeding time was normal. During the induction phase of the syndrome, transient thrombocytopenia with a long bleeding time occurred. The pig was less sensitive than the dog to the effect of coagglutinin. The severity of the syndrome is determined by the amount of venom coagglutinin administered. It is suggested that the syndrome could be induced in any mammalian species because the plasma of all mammals tested in vitro is sensitive to the venom factor. This model provides another avenue for the study of the heterogeneity of the Factor VIII complex and the pathophysiology of its components.
Pollen clustering strategies using a newly developed single-particle fluorescence spectrometer
Creators: name: Swanson, Benjamin E.
name: Huffman, J. Alex
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Space Science
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Pollen is routinely monitored and forecasted with respect to public health and allergies, but monitoring networks generally utilize a manual process of collection, analysis, and modeling that leads to poor sampling density and high measurement cost. Here, we discuss application of a single-particle fluorescence sensor recently developed for the purpose of real-time detection and recognition of pollen and spores. The sensor operates by collecting fluorescence emission spectra from many individual pollen grains sampled onto a microscope slide for each of four excitation wavelengths (280, 350, 405, and 450 nm) associated with pollen fluorophores. The sensor also records major and minor diameters of each particle. Approximately 25–30 particles for each of eight commercially purchased pollen species were interrogated. Data were analyzed using four classification methods: hierarchical agglomerative and k-means clustering (unsupervised) and random forest and gradient boosting algorithms (supervised). The purpose of the manuscript is to show development of a computational strategy to analyze spectral input data of this kind in order to support further efforts to automate sensor data collection and analysis. Both unsupervised methods showed insufficient accuracy for separating pollen species (76% k-means, 9% HAC) whereas supervised methods performed similarly well (94–95%). The random forest algorithm was then utilized to further optimize operational parameters, based on its higher computational speed. Analyzing the relative importance of each optical source for sensor performance highlighted ways that may be useful to lower sensor cost with minimal reduction to analysis quality. The results provide a framework for the application of this and similar sensors to ambient pollen detection and classification. Copyright © 2020 American Association for Aerosol Research
Alteration of epidermal growth factor-dependent phosphorylation during rat liver regeneration.
Creators: name: Rubin, R. A.
name: Earp, H. S.
name: O'Keefe, E. J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1982

description: Epidermal growth factor (EGF) stimulates membrane protein phosphorylation in a human cell line, A-431. The known hepatic mitogenic action of EGF and the reduction in EGF receptor number that occurs during liver regeneration led us to study whether EGF-dependent protein kinase activity was present in rat liver and whether its activity was altered after partial hepatectomy. Liver membranes, preincubated with or without EGF, were phosphorylated (0 degrees C, 15 sec) and subjected to NaDodSO4/polyacrylamide gel electrophoresis and autoradiography. In microsomal fractions, EGF at 5-2000 ng/ml produced a dose-related stimulation of 32P incorporation into a single 170,000-dalton protein (p170). In plasma membranes, a similar EGF-dependent phosphorylation was present and was substantially enriched relative to the microsomal fraction. Acid hydrolysis of labeled microsomal fraction followed by phosphoamino acid determination revealed that EGF stimulated 32P incorporation into phosphotyrosine residues. The EGF-dependent phosphorylation of p170 was compared in microsomal fractions isolated from rats 36 hr after partial hepatectomy or sham operation. In the absence of EGF, in vitro labeling of p170 was similar. EGF stimulated the labeling of p170 in both groups, but the response was clearly diminished after partial hepatectomy. In the presence of EGF, the labeling of p170 in microsomal fraction from regenerating livers was only 47 +/- 6% of that observed in membranes from sham-operated rats (p less than 0.005). Reduction of EGF-dependent phosphorylation during liver regeneration paralleled the loss of binding of 125I-labeled EGF. An increase in the EGF-independent phosphorylation of a 130,000-dalton protein was also observed after partial hepatectomy. The increase in the amount of this phosphoprotein was roughly equal to the loss of EGF-stimulated p170 phosphorylation. Several additional proteins showed increased phosphorylation in membranes from partially hepatectomized rats. These findings indicate that alterations in membrane tyrosine residue phosphorylation occur during regulated growth in vivo.
Interpretation of Volatility Tandem Differential Mobility Analyzer (V-TDMA) data for accurate vapor pressure and enthalpy measurement: Operational considerations, multiple charging, and introduction to a new analysis program (TAO)
Creators: name: Oxford, Christopher R.
name: Dang, Audrey J.
name: Rapp, Charles M.
name: Williams, Brent J.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Significant evaporation of pure aerosols in a Volatility Tandem Differential Mobility Analyzer (V-TDMA) creates two Condensation Particle Counter (CPC) response peaks. Two hypotheses for the observed peaks have been proposed: the existence of two phases or the separation of the singly charged experimental size distribution from the remaining experimental size distributions with charges greater than 1 (charge separation). To explore this observation, we atomized pure levoglucosan aerosol and evaporated the aerosol until two peaks formed. We used an additional classifier and neutralizer to select particles from each of the two peaks and assessed the number of charges on the particles. The smaller diameter peak contained singly charged particles, and the larger diameter peak contained the remaining charges. The charge separation hypothesis alone accounts for the two-peak observations. We used a new V-TDMA model named TAO and show that charge separation should occur in other pure components as well. The TAO model was then used to display the impact of different DMA transfer functions, different inlet size distributions, and different oven residence time distributions (RTDs) on the CPC response. Large errors are possible when direct measurement of the RTD is not performed or when wide RTDs are used. We recommend use of narrow transfer functions with narrow RTDs to detect charge separation. When the singly charged CPC response is isolated (smaller diameter peak in the two peak response), accurate estimations of vapor pressure can be recovered, assuming accurate values for gas phase diffusivity, surface energy, particle density, etc. are used. Copyright © 2020 American Association for Aerosol Research
Advanced biomass catalytic conversion to middle distillates in molten salts (ABC-Salt)
Creators: name: Heeres, Hero-Jan
name: Bonaiuto, Marino
name: Dietrich, Ralf-Uwe
name: Nygard, Heidi S.
name: Ronsse, Frederik
name: Bialik, Marta
name: Venderbosch, Robbie
name: Nowakowski, Daniel
Publisher: name: Zenodo
Year: 2021
Subjects: Pyrolysis
Molten salts
Middle distillates
Catalysis
Hydrogen

description: ABC-Salt is a Horizon 2020 funded research project whose aim is to develop a novel route to produce sustainable biofuels (more specifically middle distillates as precursors to diesel, marine and jet fuel) from lignocellulosic waste materials. Lignocellulosic feedstock materials are typically characterized by a fairly high oxygen content. Hence, to thermochemically convert these feedstocks into hydrocarbons in the middle distillate range, it requires catalytic pyrolysis, hydropyrolysis, hydrotreatment or a combination thereof to eliminate the oxygen and produce liquid hydrocarbons. Such unit operations require elevated pressures (i.e. ~30 bar for hydropyrolysis) which pose difficulties when waste lignocellulosic feedstock materials like technical lignins from the paper and wood pulp industry are to be fed to high pressure reactors. Hence, the main aim of ABC-Salt is the use of molten salts (like eutectic mixtures of K, Na and Zn chlorides) as the reaction environment as their liquid state within the envisioned biomass conversion temperature range facilitates pressurisation and pumping/feeding of the biomass liquefied in the molten salts. Molten salts offer additional benefits like increased heat transfer rates and act as catalysts in pyrolysis themselves unlike in the more standard gas-fluidized biomass pyrolysis reactor-based systems. The core concept of ABC-Salt’s biomass conversion consists of liquefying biomass residues (like lignin from the paper and pulp industry) in molten salts at ambient pressure and low temperature, followed by hydropyrolysis which is achieved by elevating the temperature and the (hydrogen) pressure of the biomass liquefied in molten salts. Finally, the produced pyrolysis vapours are hydro-deoxygenated in the vapor to achieve complete deoxygenation and produce middle destillates. This technology concept will be demonstrated in an integrated bench scale unit. In order to develop and validate this novel biomass conversion route in molten salts at a TRL level of 4, the ABC-Salt’s consortium is composed out of 9 (academic as well as non-academic) partners. Apart from the experimental work, the project consortium also have partners which will evaluate the techno-economic and socio-economic aspects of the novel concept proposed in ABC-Salt.