cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multimodality microscopy and micro-Raman spectroscopy for in vivo skin characterization and diagnosis
Creators: name: Wang, Hequn
Publisher: name: University of British Columbia
Year: 2013

description: Accurate and early diagnosis of skin diseases will improve clinical outcomes. Visual inspection alone has limited diagnostic accuracy, while biopsy followed by histopathology examination is invasive and time-consuming. The objective is to design and develop a multimodal optical instrument that provides biochemical and morphological information on human skin in vivo. Raman spectroscopy (RS) is capable of providing biochemical information of tissues. Reflectance confocal microscopy (RCM), which generates micron-level resolution images with capability of optical sectioning, can provide refractive-index-based morphological information of the skin. Multiphoton microscopy (MPM) could simultaneously provide biochemistry-based morphological information from two-photon fluorescence (TPF) and second-harmonic-generation (SHG) images. The thesis hypothesis is that a multimodality instrument combining RS, RCM, and MPM could be developed and provide complementary information in real-time for in vivo skin evaluation and aiding non-invasive diagnosis. A confocal Raman spectroscopy system was initially developed and tested in a study on in vivo mouse skin. Spectral biomarkers (899 and 1325-1330 cm-¹) were found to differentiate tumor-bearing skin from normal skin. A RCM system was then integrated with the spectroscopy system to guide spectral measurements. Noninvasive morphological and biochemical analysis was performed on ex vivo and in vivo human skin. The system was further enhanced by adding an MPM module that can image cellular structures with TPF signals from keratin, NADH, and melanin, as well as image elastic and colla ii gen fibers via TPF and SHG signals, respectively. The finalized system was utilized to noninvasively measure a cherry angioma lesion and its surrounding structures on the skin of a volunteer. Confocal Raman spectra from various regions-of-interest acquired under the guidance of MPM and RCM imaging showed different spectral patterns for blood vessels, keratinocytes, and dermal fibers. The system was also successfully used to perform imaging directed two-photon absorption based photothermolysis on ex vivo mouse skin. All the results showed positive evidence, well supporting the overall hypothesis. The developed multimodality system, capable of acquiring co-registered RCM, TPF and SHG images simultaneously at video-rate, and performing image-guided region-of-interest Raman spectral measurements of human skin in vivo, is a powerful tool for non-invasive skin evaluation and diagnosis.
Lettere contro Natura. Il gioco artificiale delle lettere e dei numeri / Kontraŭnaturaj literoj. La artefarita ludo de la literoj kaj de la ciferoj.
Creators: name: Valore, Paolo
Publisher: name: Università degli Studi di Milano
Year: 2010

description: InKoj. Philosophy & Artificial Languages, New series, Vol 1, No 2 (2010): Language construction and policies / Lingvokonstruado kaj lingvopolitikoj
Supersymmetry Breaking Triggered by Monopoles
Creators: name: Csaki, Csaba
name: Curtin, David
name: Rentala, Vikram
name: Shirman, Yuri
name: Terning, John
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate N = 1 supersymmetric gauge theories where monopole condensation triggers supersymmetry breaking in a metastable vacuum. The low-energy effective theory is an O'Raifeartaigh-like model of the kind investigated recently by Shih where the R-symmetry can be spontaneously broken. We examine several implementations with varying degrees of phenomenological interest.
description: 20 pages, 4 figures (v2: minor clarifications and typos fixed)
A General Model for the CO-H2 Conversion Factor in Galaxies with Applications to the Star Formation Law
Creators: name: Narayanan, Desika
name: Krumholz, Mark R.
name: Ostriker, Eve C.
name: Hernquist, Lars
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The most common means of converting an observed CO line intensity into a molecular gas mass requires the use of a conversion factor (Xco). While in the Milky Way this quantity does not appear to vary significantly, there is good reason to believe that Xco will depend on the larger-scale galactic environment. Utilising numerical models, we investigate how varying metallicities, gas temperatures and velocity dispersions in galaxies impact the way CO line emission traces the underlying H2 gas mass, and under what circumstances Xco may differ from the Galactic mean value. We find that, due to the combined effects of increased gas temperature and velocity dispersion, Xco is depressed below the Galactic mean in high surface density environments such as ULIRGs. In contrast, in low metallicity environments, Xco tends to be higher than in the Milky Way, due to photodissociation of CO in metal-poor clouds. At higher redshifts, gas-rich discs may have gravitationally unstable clumps which are warm (due to increased star formation) and have elevated velocity dispersions. These discs tend to have Xco values ranging between present-epoch gas-rich mergers and quiescent discs at low-z. This model shows that on average, mergers do have lower Xco values than disc galaxies, though there is significant overlap. Xco varies smoothly with the local conditions within a galaxy, and is not a function of global galaxy morphology. We combine our results to provide a general fitting formula for Xco as a function of CO line intensity and metallicity. We show that replacing the traditional approach of using one constant Xco for starbursts and another for discs with our best-fit function produces star formation laws that are continuous rather than bimodal, and that have significantly reduced scatter.
description: Accepted by MNRAS; major revision includes moving the bulk of the equations to an appendix
Saturno, Giove, Marte e Filippo: le quattro chiavi del Codice Bellaso / Saturno, Jupitero, Marto kaj Filippo: la kvar ŝlosiloj de la Kodo de Bellaso
Creators: name: Rizzardini, Massimo
Publisher: name: Università degli Studi di Milano
Year: 2010

description: ABSTRACT Il vero modo di scrivere in cifra con facilità, prestezza et securezza è un’operetta scritta e pubblicata nel 1564 da Giovan
Battista Bellaso, sconosciuto diplomatico di origini bresciane. In poche pagine, l’autore esponeva i risultati delle sue ricerche in
un ambito misterioso e sospettato: quello della crittografia. Divisi in quattro metodi e in numerose varianti, i sistemi polialfabetici
spiegati nel manuale seguivano e miglioravano i "dischi cifranti" di Leon Battista Alberti (che con ogni probabilità Bellaso non
conosceva), anticipavano la celebre tavola di Vigenère e guidavano il lettore meno esperto nel complicato mondo dei codici
segreti. Quattrocento anni prima del codice Enigma di Arthur Scherbius.

RESUMO Il vero modo di scrivere in cifra con facilità, prestezza et securezza estas verketo skribita kaj eldona en 1564 de Giovan Battista Bellaso, nekonata diplomato brescia laŭ naskiĝo. En malmultaj paĝoj, la aŭtoro prezentas la rezultojn de la ĝiaj esploroj en mistera kaj suspekta kadro: la kriptografio. Disitaj en kvar metodoj kaj multaj variantoj, la polialfabetaj sistemoj klarigitaj en la manlibro sekvis kaj plibonigis la ”ĉifrantajn diskojn” de Leon Battista Alberti (kiujn probable Bellaso ne sciis), anticipis la konan tabelon de Vigenère kaj gvidis la malpli ekspertan leganton tra la komplika mondo de la sekretaj kodoj. Kvarcent jarojn antaŭ Enigma codo de Arthur Scherbius.
description: InKoj. Philosophy & Artificial Languages, New series, Vol 1, No 2 (2010): Language construction and policies / Lingvokonstruado kaj lingvopolitikoj
On Noncommutative Principal Bundles with Finite Abelian Structure Group
Creators: name: Wagner, Stefan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 46L87, 55R10 (Primary), 37B05, 17A60 (Secondary)

description: Let $Λ$ be a finite abelian group. A dynamical system with transformation group $Λ$ is a triple $(A,Λ,α)$, consisting of a unital locally convex algebra $A$, the finite abelian group $Λ$ and a group homomorphism $α:Λ\rightarrow\Aut(A)$, which induces an action of $Λ$ on $A$. In this paper we present a new, geometrically oriented approach to the noncommutative geometry of principal bundles with finite abelian structure group based on such dynamical systems.
description: 35 pages, all comments are welcome. This paper is an improved version of the preprint arXiv:1201.1748v2 [math.DG]
Stojan Ĝuĝev - Interlingvistika Utopiismo
Creators: name: Gobbo, Federico
Publisher: name: Università degli Studi di Milano
Year: 2010

description: el: Violin Oljanov (red.). Interlingvistiko Esperantologio. Sofio:
Bulgara Esperantista Asocio. 1985. pp. 19–43.
Antaŭparolo de Federico Gobbo
description: InKoj. Philosophy & Artificial Languages, New series, Vol 1, No 2 (2010): Language construction and policies / Lingvokonstruado kaj lingvopolitikoj
Bubbles and jackets: new scaling bounds in topological group field theories
Creators: name: Carrozza, Sylvain
name: Oriti, Daniele
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use a reformulation of topological group field theories in 3 and 4 dimensions in terms of variables associated to vertices, in 3d, and edges, in 4d, to obtain new scaling bounds for their Feynman amplitudes. In both 3 and 4 dimensions, we obtain a bubble bound proving the suppression of singular topologies with respect to the first terms in the perturbative expansion (in the cut-off). We also prove a new, stronger jacket bound than the one currently available in the literature. We expect these results to be relevant for other tensorial field theories of this type, as well as for group field theory models for 4d quantum gravity.
description: v2: Minor modifications to match published version
Self-consistent field theory based molecular dynamics with linear system-size scaling
Creators: name: Richters, Dorothee
name: Kühne, Thomas D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present an improved field-theoretic approach to the grand-canonical potential suitable for linear scaling molecular dynamics simulations using forces from self-consistent electronic structure calculations. It is based on an exact decomposition of the grand canonical potential for independent fermions and does neither rely on the ability to localize the orbitals nor that the Hamilton operator is well-conditioned. Hence, this scheme enables highly accurate all-electron linear scaling calculations even for metallic systems. The inherent energy drift of Born-Oppenheimer molecular dynamics simulations, arising from an incomplete convergence of the self-consistent field cycle, is circumvented by means of a properly modified Langevin equation. The predictive power of the present linear scaling \textit{ab-initio} molecular dynamics approach is illustrated using the example of liquid methane under extreme conditions.
description: 10 pages, 3 figures
Effect of nonnegativity on estimation errors in one-qubit state tomography with finite data
Creators: name: Sugiyama, Takanori
name: Turner, Peter S.
name: Murao, Mio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistics Theory (math.ST)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We analyze the behavior of estimation errors evaluated by two loss functions, the Hilbert-Schmidt distance and infidelity, in one-qubit state tomography with finite data. We show numerically that there can be a large gap between the estimation errors and those predicted by an asymptotic analysis. The origin of this discrepancy is the existence of the boundary in the state space imposed by the requirement that density matrices be nonnegative (positive semidefinite). We derive an explicit form of a function reproducing the behavior of the estimation errors with high accuracy by introducing two approximations: a Gaussian approximation of the multinomial distributions of outcomes, and linearizing the boundary. This function gives us an intuition for the behavior of the expected losses for finite data sets. We show that this function can be used to determine the amount of data necessary for the estimation to be treated reliably with the asymptotic theory. We give an explicit expression for this amount, which exhibits strong sensitivity to the true quantum state as well as the choice of measurement.
description: 9 pages, 4 figures, One figure (FIG. 1) is added to the previous version, and some typos are corrected
Günter Brus’ «Zerreißprobe» und die Tradition christlicher Selbstopfer
Creators: name: Brucher, Rosemarie
Publisher: name: Università degli Studi di Milano
Year: 2013

description: This article addresses the relation of Zerreißprobe (1970), the last performance work of the Viennese Actionist Günter Brus, to the tradition of Christian self-sacrifice. Three aspects of this relation are given particular attention: the aestheticization of suffering, the representative function of sacrifice and the distinction between the dependent body and the postulate of free will.
description: Studia austriaca, Vol 21 (2013)
Aspects of a dynamical gluon mass approach to elastic hadron scattering at LHC
Creators: name: Fagundes, D. A.
name: Luna, E. G. S.
name: Menon, M. J.
name: Natale, A. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss how the main features of the recent LHC data on elastic scattering can be described by a QCD-inspired formalism with a dynamical infrared mass scale. For this purpose new developments on a dynamical gluon mass approach are reported, with emphasis on a method to estimate uncertainty bounds in the predictions for the high-energy scattering observables. We investigate the effects due to the correlations among the fixed and free parameters involved and show that the band of predictions are consistent with the recent data from the TOTEM experiment, including the forward quantities and the differential cross section up to the dip position.
description: 19 pages, 7 figures, 5 tables. Discussion extended, references added, typos corrected, to be published in Nucl. Phys. A
Von “Inländern” und “Barbaren”. Identitäts- und Alteritätskonzepte bei Ilse Aichinger und Konstantinos Kavafis
Creators: name: Rassidakis, Alexandra
Publisher: name: Università degli Studi di Milano
Year: 2013

description: In their texts Ilse Aichinger and Konstantinos Kavafis adopt a perspective from which the conceptions of identity and otherness can be questioned and their interrelationship reconsidered. The binary opposition between “Us” and the “Other” is thus undermined and its dimension as a discursive construction becomes apparent. Both Aichinger and Kavafis do not focus on the “Other” when writing about “Barbarians”; they rather question the conception of “Us”. The subversive value of these texts lies in this very questioning of a homogeneous and clearly drawn conception of identity.
description: Studia austriaca, Vol 21 (2013)
Quantitative estimation of kink-band strengthening in an Mg–Zn–Y single crystal with LPSO nanoplates
Creators: name: Hagihara, Koji
name: Ueyama, Ryohei
name: Tokunaga, Toko
name: Yamasaki, Michiaki
name: Kawamura, Yoshihito
name: Nakano, Takayoshi
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Plant Biology
subject: Computational Biology

description: Kink-band strengthening was first quantitatively evaluated using an Mg–Zn–Y single crystal containing long-period stacking ordered (LPSO) nanoplates. The ability of a kink-band boundary to act as a barrier that hinders the motion of dislocations is high and comparable to that of a general random grain boundary. Nevertheless, a kink-band boundary is regarded as a simple tilt boundary in the dislocation model. One reason for the anomalous ability of kink-band boundary acting as barriers is related to its peculiar hierarchical structure, in which many small kink bands with high crystal rotation angles accumulate in a localized region. By the quantitative estimation using the single crystal, the origin of the anomalous ability of kink bands acting as barriers that hinder the motion of dislocation was elucidated.
Three dimensional velocity tomography in the core of Messier 71
Creators: name: Samra, Raminder Singh
Publisher: name: University of British Columbia
Year: 2013

description: Using the Gemini North Telescope at Mauna Kea, Hawaii, we have obtained astrometric and spectroscopic data for stars in the core of the galactic globular cluster Messier 71 (NGC 6838). This data has allowed us to for the first time ever to obtain three dimensional velocity profiles for stars in the vicinity of centre of a globular cluster. Using the Near Infrared Imager with Adaptive Optics and a 3.8 year baseline for our astrometric study we have resolved the internal proper motion dispersion. The proper motion dispersion is found to be 179±17 µ year⁻¹, we have put a strict limit to the size of any central Intermediate Mass Black Hole at ~150 solar masses at 90% confidence, additionally we find no evidence of core anisotropy. Using our GMOS Integrated Field Unit spectroscopic data we have obtained a radial velocity dispersion of 3.54±0.64 km s⁻¹. Combining our proper motion and radial velocity dispersions we find the geometric distance to the cluster to be 4.1±1.2 kpc. We then compare our geometric distance to a distance found from fitting stellar evolution models. We have developed a new technique for fitting models, using this technique we find the stellar evolution model distance to be 3.9±0.2 kpc. We then discuss how this technique can easily be applied to other clusters in any future work.
Dissecting the function of Y-box binding protein-1 (YB-1) during the development of breast cancer
Creators: name: Davies, Alastair Henry
Publisher: name: University of British Columbia
Year: 2013

description: The series of events that trigger the transformation of a normal cell into a malignant cell are unclear. One prospective driver of tumourigenesis is Y-box binding protein-1 (YB-1). BLG-YB-1 transgenic mice all form mammary tumours and the protein is expressed in over 40% of breast carcinomas. The studies presented in this thesis aimed to uncover the function of YB-1 during the transformation process. To this end, we conditionally expressed YB-1 in normal human mammary epithelial cells (HMECs). In agreement with tumours from the transgenic mice, genomic instability was manifested in the form of numerical and structural chromosomal abnormalities. To query the mechanism responsible for these phenotypes, we assessed global changes in signal transduction using an antibody microarray. Notably, we identified an increase in LIM kinase (LIMK1/2) activity that acted as a catalyst for cytokinesis failure. Subsequent cell cycle checkpoint slippage, due to cyclin E over-expression, potentiated centrosome amplification leading to mitotic spindle abnormalities. The resulting genomic instability was not stochastic but rather it increased susceptibility to cancer by promoting low-level HER2 amplification, as one example. Deeper interrogation revealed that YB-1 was capable of fully transforming HMECs. Through stabilization and upregulation of the histone acetyltransferase p300, YB-1 reprogrammed HMECs into stem/progenitor-like tumour-initiating cells (TICs). Mechanistically, the relaxation of promoter-centered chromatin permitted YB-1 to bind and transcriptionally regulate the TIC-associated genes BMI1, CD44, and CD49f. These cells formed DCIS-like luminal outgrowths in a three-dimensional model of breast acini. Over time, pressures exerted by YB-1 led to the emergence of cells expressing RSK2 and hTERT that had the capacity to form tumours in vivo. These cells were subtyped as triple-negative breast cancer (TNBC), a particularly aggressive form of the disease that is prone to relapse. We discovered that YB-1 regulates the multidrug resistance transporter ABCG2 to render the CD44⁺/CD49f⁺ TIC subpopulation refractory to traditional chemotherapy. However, these cells were responsive to RSK inhibitors, which prevent the activation of YB-1. As a whole, the studies outlined in this thesis indicate that YB-1 facilitates the genesis of TNBC through epigenetic reprogramming and targeting it has the potential to overcome drug resistance and prevent tumour recurrence.
Quantum reading under a local energy constraint
Creators: name: Spedalieri, Gaetana
name: Lupo, Cosmo
name: Mancini, Stefano
name: Braunstein, Samuel L.
name: Pirandola, Stefano
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nonclassical states of light play a central role in many quantum information protocols. Their quantum features have been exploited to improve the readout of information from digital memories, modelled as arrays of microscopic beam splitters [S. Pirandola, Phys. Rev. Lett. 106, 090504 (2011)]. In this model of quantum reading, a nonclassical source of light with Einstein-Podolski-Rosen correlations has been proven to retrieve more information than any classical source. In particular, the quantum-classical comparison has been performed under a global energy constraint, i.e., by fixing the mean total number of photons irradiated over each memory cell. In this paper we provide an alternative analysis which is based on a local energy constraint, meaning that we fix the mean number of photons per signal mode irradiated over the memory cell. Under this assumption, we investigate the critical number of signal modes after which a nonclassical source of light is able to beat any classical source irradiating the same number of signals.
description: REVTeX. Published version
Electronic Liquid Crystalline Phases in a Spin-Orbit Coupled Two-Dimensional Electron Gas
Creators: name: Berg, Erez
name: Rudner, Mark S.
name: Kivelson, Steven A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We argue that the ground state of a two-dimensional electron gas with Rashba spin-orbit coupling realizes one of several possible liquid crystalline or Wigner crystalline phases in the low-density limit, even for short-range repulsive electron-electron interactions (which decay with distance with a power larger than 2). Depending on specifics of the interactions, preferred ground-states include an anisotropic Wigner crystal with an increasingly anisotropic unit cell as the density decreases, a striped or electron smectic phase, and a ferromagnetic phase which strongly breaks the lattice point-group symmetry, i.e. exhibits nematic order. Melting of the anisotropic Wigner crystal or the smectic phase by thermal or quantum fluctuations can gives rise to a non-magnetic nematic phase which preserves time-reversal symmetry.
description: 12 pages, 7 figures. Published version
Dynamics in dense hard-sphere colloidal suspensions
Creators: name: Orsi, Davide
name: Fluerasu, Andrei
name: Moussaid, Abdellatif
name: Zontone, Federico
name: Cristofolini, Luigi
name: Madsen, Anders
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The dynamic behavior of a hard-sphere colloidal suspension was studied by X-ray Photon Correlation Spectroscopy and Small Angle X-ray Scattering over a wide range of particle volume fractions. The short-time mobility of the particles was found to be smaller than that of free particles even at relatively low concentrations, showing the importance of indirect hydrodynamic interactions. Hydrodynamic functions were derived from the data and for moderate particle volume fractions (> 0.40) there is a good agreement with earlier many-body theory calculations by Beenakker and Mazur [C.W.J. Beenakker and P. Mazur, Physica A 120, 349 (1984)]. Important discrepancies appear at higher concentrations, above ~0.40, where the hydrodynamic effects are overestimated by the Beenakker-Mazur theory, but predicted accurately by an accelerated Stokesian dynamics algorithm developed by Banchio and Brady [A.J. Banchio and J. F. Brady, J. Chem. Phys. 118, 10323 (2003)]. For the relaxation rates, good agreement was also found between the experimental data and a scaling form predicted by Mode Coupling Theory. In the high concentration range, with the fluid suspensions approaching the glass transition, the long-time diffusion coefficient was compared with the short-time collective diffusion coefficient to verify a scaling relation previously proposed by Segre and Pusey [P.N. Segre and P.N. Pusey, Phys. Rev. Lett. 77, 771 (1996)]. We discuss our results in view of previous experimental attempts to validate this scaling law [L. Lurio et al., Phys. Rev. Lett. 84, 785 (2000)]
description: 10 pages, 10 figures, to appear in Phys. Rev. E
title: Lights and shadows of Cardiac MR Imaging at 3T: quality assessment and comparison with 1.5T
Creators: name: Torlone, Silvia
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Tissue characterisation
subject: Ischaemia / Infarction
subject: Artifacts
subject: Imaging sequences
subject: Diagnostic procedure
subject: MR
subject: Cardiovascular system
subject: Cardiac

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Cardiovascular Magnetic Resonance (CMR) has become an important diagnostic imaging modality in cardiovascular medicine. 3T MRI scanners provide a wide range of cardiovascular imaging applications, but advantages and disadvantages must be...
Gompertz and Verhulst frameworks for growth and decay description
Creators: name: Ausloos, Marcel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Verhulst logistic curve either grows OR decays, depending on the {\it growth rate} parameter value. A similar situation is found in the Gompertz law about human mortality. However, growth can neither be infinite nor reach a finite steady state at an infinite asymptotic time. Moreover before some decay, some growth must have occurred. For example, some levelling-off could occur at finite time, followed either by some growth again or then by some decay. Numerous examples show that the Verhulst and Gompertz modelisations are too reductive (or restrictive) descriptions of their original purpose. It is aimed, in the present note, to encompass into ONE simple differential equation the growth AND decay features of, e.g., population sizes, or numbers, but also of many other measured characteristics found in social and physical science systems. Previous generalisations of Verhulst or Gompertz functions are recalled. It is shown that drastic growth or decay jumps or turnovers can be readily described through drastic changes in values of the growth or decay rate. However smoother descriptions can be found if the growth or decay rate is modified in order to take into account some time or size dependence. Similar arguments can be carried through, but not so easily, for the so called carrying capacity, indeed leading to more elaborate algebraic work.
description: 24 pages, 7 figures, 43 references; revised version of paper prepared for the Proceedings of CASYS11, 2011, a conference on Anticipatory Computing Systems, D.M. Dubois, Ed
Prova e processo matrimoniale
Creators: name: Berlingò, Salvatore
Publisher: name: Università degli Studi di Milano
Year: 2011
Subjects: Diritti delle religioni

description: Prolusione ai lavori del XLII Congresso Nazionale di Diritto canonico su  “La prova della nullità matrimoniale secondo la giurisprudenza della  Rota Romana” (6-9 settembre 2010, Riviera di Taormina).
description: Stato, Chiese e pluralismo confessionale, 2011: 14 febbraio
Analysis of the Electrical and Thermal Properties for Magnetic Fe 3 O 4 -Coated SiC-Filled Epoxy Composites
Creators: name: Wu, Jiale
name: Zhang, Yiran
name: Gong, Yangzhi
name: Wang, Kun
name: Chen, Yun
name: Song, Xupeng
name: Lin, Jun
name: Shen, Boyang
name: He, Shaojian
name: Bian, Xingming
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: magnetization treatment
orderly arrangement
breakdown strength
dielectric properties
thermal conductivity
silicon carbide

description: Orderly arranged Silicon carbide (SiC)/epoxy (EP) composites were fabricated. SiC was made magnetically responsive by decorating the surface with iron oxide (Fe3O4) nanoparticles. Three treatment methods, including without magnetization, pre-magnetization and curing magnetization, were used to prepare SiC/EP composites with different filler distributions. Compared with unmodified SiC, magnetic SiC with core-shell structure was conducive to improve the breakdown strength of SiC/EP composites and the maximum enhancement rate was 20.86%. Among the three treatment methods, SiC/EP composites prepared in the curing-magnetization case had better comprehensive properties. Under the action of magnetic field, magnetic SiC were orderly oriented along the direction of an external field, thereby forming SiC chains. The magnetic alignment of SiC restricted the movement of EP macromolecules or polar groups to some extent, resulting in the decrease in the dielectric constant and dielectric loss. The SiC chains are equivalent to heat flow channels, which can improve the heat transfer efficiency, and the maximum improvement rate was 23.6%. The results prove that the orderly arrangement of SiC had a favorable effect on dielectric properties and thermal conductivity of SiC/EP composites. For future applications, the orderly arranged SiC/EP composites have potential for fabricating insulation materials in the power electronic device packaging field.
Effective action approach to cosmological perturbations in dark energy and modified gravity
Creators: name: Battye, Richard A.
name: Pearson, Jonathan A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In light of upcoming observations modelling perturbations in dark energy and modified gravity models has become an important topic of research. We develop an effective action to construct the components of the perturbed dark energy momentum tensor which appears in the perturbed generalized gravitational field equations, δG_{μν} = 8πGδT_{μν} + δU_{μν} for linearized perturbations. Our method does not require knowledge of the Lagrangian density of the dark sector to be provided, only its field content. The method is based on the fact that it is only necessary to specify the perturbed Lagrangian to quadratic order and couples this with the assumption of global statistical isotropy of spatial sections to show that the model can be specified completely in terms of a finite number of background dependent functions. We present our formalism in a coordinate independent fashion and provide explicit formulae for the perturbed conservation equation and the components of δU_{μν} for two explicit generic examples: (i) the dark sector does not contain extra fields, L = L(g_{μν}) and (ii) the dark sector contains a scalar field and its first derivative L = L(g_{μν}, ϕ, \nabla_μϕ). We discuss how the formalism can be applied to modified gravity models containing derivatives of the metric, curvature tensors, higher derivatives of the scalar fields and vector fields.
description: Version accepted by JCAP. Typos corrected. Covariant decoupling conditions added
title: Susceptibility weighted imaging in neurological differential diagnosis: A pictorial exhibit.
Creators: name: Aggarwal, Abhisht
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Haemorrhage
subject: Blood
subject: Imaging sequences
subject: Education
subject: MR
subject: Neuroradiology brain
subject: CNS

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To illustrate the spectrum of imaging findings on susceptibility weighted imaging (SWI) in the diagnosis of various intracranial...
I nuovi diritti
Creators: name: Cartabia, Marta
Publisher: name: Università degli Studi di Milano
Year: 2011

description: Relazione tenuta al Convegno di studi  sul tema“Diritto della Unione Europea e status delle confessioni  religiose” (Roma, Istituto Sturzo, 8-9 ottobre 2010) organizzato dal  Centro Studi sugli Enti Ecclesiastici – CESEN, destinata alla  pubblicazione negli Atti, pubblicata per la cortese disponibilità del  CESENInformazioni articolo (Relazione, Estratto, ecc)
 SOMMARIO: 1. L’età dei “nuovi” diritti in Europa - 2. Nuovi assetti  istituzionali dell’Europa dei diritti – 3. Due casi esemplari: il  diritto al figlio e il diritto al matrimonio omosessuale - 4. I “nuovi”  diritti come espressione della privacy e del principio di non  discriminazione - 5. “Nuovi” diritti senza limiti - 6. A conclusione:  alcuni spunti problematici.
description: Stato, Chiese e pluralismo confessionale, 2011: 14 febbraio
Upper limits of particle emission from high-energy collision and reaction near a maximally rotating Kerr black hole
Creators: name: Harada, Tomohiro
name: Nemoto, Hiroya
name: Miyamoto, Umpei
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The center-of-mass energy of two particles colliding near the horizon of a maximally rotating black hole can be arbitrarily high if the angular momentum of either of the incident particles is fine-tuned, which we call a critical particle. We study particle emission from such high-energy collision and reaction in the equatorial plane fully analytically. We show that the unconditional upper limit of the energy of the emitted particle is given by 218.6% of that of the injected critical particle, irrespective of the details of the reaction and this upper limit can be realized for massless particle emission. The upper limit of the energy extraction efficiency for this emission as a collisional Penrose process is given by 146.6%, which can be realized in the collision of two massive particles with optimized mass ratio. Moreover, we analyze perfectly elastic collision, Compton scattering, and pair annihilation and show that net positive energy extraction is really possible for these three reactions. The Compton scattering is most efficient among them and the efficiency can reach 137.2%. On the other hand, our result is qualitatively consistent with the earlier claim that the mass and energy of the emitted particle are at most of order the total energy of the injected particles and hence we can observe neither super-heavy nor super-energetic particles.
description: 22 pages, 3 figures, typos corrected, reference updated, accepted for publication in Physical Review D, typos corrected
title: Cheek Imaging: The High-resolution ultrasound (HRUSG) approach, a roadmap towards early detection and differentiation of lesions
Creators: name: BANGARI, GURURAJ
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neoplasia
subject: Inflammation
subject: Infection
subject: Staging
subject: Diagnostic procedure
subject: Ultrasound
subject: Head and neck
subject: Anatomy

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To characterize identifiable cheek lesions as benign, malignant, inflammatory or infective based on HRUSG findings. To emphasize the importance of early detection of buccal mucosal carcinoma, by HRUSG, which is critical in treatment planning and...
MPEC 2023-X109 : 2020 XJ5
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Pace interreligiosa: alcuni spunti di riflessione a margine della World interfaith harmony week ed il possibile ruolo del diritto
Creators: name: Fuccillo, Antonio
Publisher: name: Università degli Studi di Milano
Year: 2011

description: SOMMARIO: 1. Diversità interreligiosa e pace sociale: la speranza del dialogo - 2. Conoscersi e comunicare: la via segnata verso la ricerca di un lessico giuridico “laico” condiviso - 3. La ricerca di una vera eguaglianza giuridica tra le fedi religiose.
description: Stato, Chiese e pluralismo confessionale, 2011: 14 febbraio
title: MRI of Tumors in Pregnancy
Creators: name: Kinger, Nikhar
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Obstetrics (Pregnancy / birth / postnatal period)
subject: Oncology
subject: MR
subject: Diagnostic procedure
subject: Cancer
subject: Foetus

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Discuss the imaging of pregnant patients when pregnant Demonstrate the appearance of tumors in pregnant patients Characterize both benign and malignant tumors during...
title: Application of Gd-based Macromolecular MRI Contrast Agent in Breast Cancer Imaging
Creators: name: Li, Yaying
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Toxicity
subject: Multidisciplinary cancer care
subject: Image verification
subject: Laboratory tests
subject: Efficacy studies
subject: Comparative studies
subject: MR-Functional imaging
subject: MR-Angiography
subject: MR
subject: Oncology
subject: Contrast agents
subject: Molecular imaging

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Although MRI enhanced scanning can show the lesion well, it is still not ideal for tumor vessel display. If the tumor vessel can be clearly identified early, vascular targeting therapy will be an effective management for breast cancer. To...
title: Soft Tissue Calcification - A Pictorial Review
Creators: name: Puttick, Thomas
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education
subject: MR
subject: CT-Quantitative
subject: Conventional radiography
subject: Musculoskeletal soft tissue
subject: Musculoskeletal joint
subject: Tissue characterisation

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - Demonstrate important, interesting and unusual imaging appearances. - Discuss key learning points and further imaging - Help create a robust systematic approach to reporting similar cases, in order to optimise diagnostic accuracy and streamline...
Folding and duplex formation in mixed sequence recognition-encoded m-phenylene ethynylene polymers.
Creators: name: Iadevaia, Giulia
name: Swain, Jonathan A
name: Núñez-Villanueva, Diego
name: Bond, Andrew D
name: Hunter, Christopher A
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: Oligomers equipped with complementary recognition units have the potential to encode and express chemical information in the same way as nucleic acids. The supramolecular assembly properties of m-phenylene ethynylene polymers equipped with H-bond donor (D = phenol) and H-bond acceptor (A = phosphine oxide) side chains have been investigated in chloroform solution. Polymerisation of a bifunctional monomer in the presence of a monofunctional chain stopper was used for the one pot synthesis of families of m-phenylene ethynylene polymers with sequences ADnA or DAnD (n = 1-5), which were separated by chromatography. All of the oligomers self-associate due to intermolecular H-bonding interactions, but intramolecular folding of the monomeric single strands can be studied in dilute solution. NMR and fluorescence spectroscopy show that the 3-mers ADA and DAD do not fold, but there are intramolecular H-bonding interactions for all of the longer sequences. Nevertheless, 1 : 1 mixtures of sequence complementary oligomers all form stable duplexes. Duplex stability was quantified using DMSO denaturation experiments, which show that the association constant for duplex formation increases by an order of magnitude for every base-pairing interaction added to the chain, from 103 M-1 for ADA·DAD to 105 M-1 for ADDDA·DAAAD. Intramolecular folding is the major pathway that competes with duplex formation between recognition-encoded oligomers and limits the fidelity of sequence-selective assembly. The experimental approach described here provides a practical strategy for rapid evaluation of suitability for the development of programmable synthetic polymers.
Mathematical modeling of maltose uptake system in E. coli using nanodisc fluorescence quenching data
Creators: name: Hiller, Rebecca Marie
Publisher: name: University of British Columbia
Year: 2013

description: Recent data measured in nanodiscs conflicts with the standard theory of maltose transport in the MalE-MalFGK₂ uptake system found in E. coli. Nanodisc fluorescence quenching data suggest an alternate pathway in which unliganded MalE binds the P-open transporter, facilitating maltose acquisition. Nanodisc data also indicate that MalE regulates maltose uptake at high concentrations. We analyzed four mathematical models of the maltose uptake system: the distinct standard and alternate models, and two integrated models. Nanodisc fluorescence quenching data and nonlinear regression analysis were used to fit equilibrium constants and kinetic rates. The flux through each pathway in an integrated model was calculated using asymptotic analysis and fit parameter values. We conclude that it is likely that transport occurs when liganded MalE associates to a P-open conformation of MalFGK₂, rather than binding to the P-closed transporter as suggested by the standard model. The standard pathway was calculated to be negative, i.e. to occur in reverse as a means of regulating maltose uptake at high concentration. This analysis conflicts with the standard model in which liganded MalE binds to a closed transporter and triggers an opening of the transporter proteins which in turn open the liganded MalE. The analysis also found that a relatively small amount of maltose transport may occur through the alternate pathway involving unliganded MalE.
Brain micro-architecture and disinhibition: a latent phenotyping study across 33 impulsive and compulsive behaviours
Creators: name: Romero-Garcia, Rafa
name: Hook, Roxanne W.
name: Tiego, Jeggan
name: Bethlehem, Richard A. I.
name: Goodyer, Ian M.
name: Jones, Peter B.
name: Dolan, Ray
name: Grant, Jon E.
name: Bullmore, Edward T.
name: Yücel, Murat
name: Chamberlain, Samuel R.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Article
/692/1807
/631/378
article

description: Abstract: Impulsive and compulsive symptoms are common, tend to co-occur, and collectively account for a substantive global disease burden. Latent phenotyping offers a promising approach to elucidate common neural mechanisms conferring vulnerability to such symptoms in the general population. We utilised the Neuroscience in Psychiatry Network (NSPN), a cohort of young people (aged 18–29 years) in the United Kingdom, who provided questionnaire data and Magnetic Resonance Imaging scans. Partial Least Squares was used to identify brain regions in which intra-cortical myelination (measured using Magnetisation Transfer, MT) was significantly associated with a disinhibition phenotype, derived from bi-factor modelling of 33 impulsive and compulsive problem behaviours. The neuroimaging sample comprised 126 participants, mean 22.8 (2.7 SD) years old, being 61.1% female. Disinhibition scores were significantly and positively associated with higher MT in the bilateral frontal and parietal lobes. 1279 genes associated with disinhibition-related brain regions were identified, which were significantly enriched for functional biological interactions reflecting receptor signalling pathways. This study indicates common microstructural brain abnormalities contributing to a multitude of related, prevalent, problem behaviours characterised by disinhibition. Such a latent phenotyping approach provides insights into common neurobiological pathways, which may help to improve disease models and treatment approaches. Now that this latent phenotyping model has been validated in a general population sample, it can be extended into patient settings.
Le radici religiose dei diritti umani e i problemi attuali
Creators: name: Prisco, Salvatore
Publisher: name: Università degli Studi di Milano
Year: 2011

description: SOMMARIO: 1. L’eredità di una storia complessa - 2. I difficili problemi del presente.
description: Stato, Chiese e pluralismo confessionale, 2011: 14 febbraio
La nuova disciplina del matrimonio degli stranieri alla luce del pacchetto sicurezza. I suoi riflessi sul matrimonio concordatario
Creators: name: Consorti, Pierluigi
Publisher: name: Università degli Studi di Milano
Year: 2011
Subjects: Matrimonio

description: SOMMARIO: 1. La capacità matrimoniale dello straniero prima del  pacchetto sicurezza - 2. La novella dell’art. 116 c.c. - 3. Il diritto  al matrimonio nel pacchetto sicurezza - 4. Art. 116 c.c. e matrimonio  concordatario - 5. Pubblicazioni civili e matrimonio concordatario - 6.  Trascrivibilità del matrimonio concordatario di cittadino straniero che  non documenta la regolarità del soggiorno - 7. Matrimonio concordatario  degli stranieri non cattolici - 8. Conclusione
description: Stato, Chiese e pluralismo confessionale, 2011: 7 febbraio