cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Particulate matter characteristics, dynamics and sources in an underground mine
Creators: name: S. Saarikoski
name: K. Teinilä
name: H. Timonen
name: M. Aurela
name: T. Laaksovirta
name: F. Reyes
name: Y. Vásques
name: P. Oyola
name: P. Artaxo
name: A. S. Pennanen
name: S. Junttila
name: M. Linnainmaa
name: R. O. Salonen
name: R. Hillamo
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology

description: Particulate matter (PM) from mining operations, engines and ore processing may have adverse effects on health and well-being of workers and population living nearby. In this study, the characteristics of PM in an underground chrome mine were investigated in Kemi, Northern Finland. The concentrations and chemical composition of PM in size ranges from 2.5 nm to 10 µm were explored in order to identify sources, formation mechanisms and post-emission processes of particles in the mine air. This was done by using several online instruments with high time-resolution and offline particulate sampling followed by elemental and ionic analyses. A majority of sub-micrometer particles (<1 µm in diameter, PM1) originated from diesel engine emissions that were responsible for a rather stable composition of PM1 in the mine air. Another sub-micrometer particle type originated from the combustion products of explosives (e.g. nitrate and ammonium). On average, PM1 in the mine was composed of 62, 30 and 8% of organic matter, black carbon and major inorganic species, respectively. Regarding the analyzed elements (e.g. Al, Si, Fe, Ca), many of them peaked at >1 µm indicating mineral dust origin. The average particle number concentration in the mine was (2.3 ± 1.4)*104 #/cm3. The maximum of particle number size distribution was between 30 and 200 nm for most of the time but there was frequently a distinct mode <30 nm. The potential origin of nano-size particles remained as challenge for future studies.
Density matrices in integrable face models
Creators: name: Frahm, Holger
name: Westerfeld, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Using the properties of the local Boltzmann weights of integrable interaction-round-a-face (IRF or face) models we express local operators in terms of generalized transfer matrices. This allows for the derivation of discrete functional equations for the reduced density matrices in inhomogeneous generalizations of these models. We apply these equations to study the density matrices for IRF models of various solid-on-solid type and quantum chains of non-Abelian $\bm{su(2)_3}$ or Fibonacci anyons. Similar as in the six vertex model we find that reduced density matrices for a sequence of consecutive sites can be 'factorized', i.e.\ expressed in terms of nearest-neighbour correlators with coefficients which are independent of the model parameters. Explicit expressions are provided for correlation functions on up to three neighbouring sites.
description: Submission to SciPost
Η διαλεκτική και αποδεικτική μέθοδος στη θεολογία του Αγίου Γρηγορίου Παλαμά
Creators: name: Πήλιουρης, Ιωάννης Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Πλατωνικοαριστοτελική φιλοσοφία
Οντολογία
Χριστιανική γνωσιολογία
Διάκριση των πνευμάτων
Platonic-Aristotelian philosophy
Ontology
Christian Gnoseology
Discernment of spirits

description: Η εργασία αυτή φέρνει σε διάλογο την ουσία της χριστιανικής γνωσιολογίας μ᾽ εκείνη της πλατωνικοαριστοτελικής φιλοσοφίας. Για την παρούσα εργασία όμως ως πυρήνας της πλατωνικοαριστοτελικής φιλοσοφίας δεν εκλαμβάνεται η λογική ως τέτοια, αλλά πώς συμβάλλει αυτή στη σύσταση της πρώτης επιστήμης (οντοθεολογίας), αλλά και στη μυστική ένωση με τὸ θείο. Γι᾽ αυτό και ο Παλαμάς ασκεί αυστηρή κριτική στο θρησκευτικό περιεχόμενο του μυστικού φιλοσοφικού βιώματος, στο οποίο και διαβλέπει, ως επί το πολύ, δαιμονικό υπόβαθρο, χωρίς βέβαια να αποκλείει ο ίδιος τη θεολογική χρήση κάποιων φιλοσοφικών τόπων: Λ.χ. η συχνά επαναλαμβανόμενη χριστιανική πεποίθηση ότι μόνο ο παθών γνωρίζει τα θεία δεν συνιστά χριστιανική καινοτομία, αλλά αποτελεί τον κοινό φιλοσοφικό τόπο της πυθαγορειοπλατωνικής παραδόσεως. Ωστόσο, όπως τονίστηκε, το μυστικό βίωμα δεν είναι εξ ορισμού αξιόπιστο, και γι᾽ αυτό καθίσταται αναγκαία η διάκριση των πνευμάτων (discretio spirituum). Θεωρούμε μάλιστα ότι ο Παλαμάς μέσω της ησυχαστικής θεολογικής μεθόδου – που συνοψίζει την ασκητική πρακτική των προηγούμενων αιώνων – προσέφερε έναν τρόπο ταυτοποίησης της ποιότητας του θρησκευτικού βιώματος και κατοχύρωσης έτσι των θεολογικών αποδεικτικών αρχών. Σε αντίθεση όμως με την πλατωνικοαριστοτελική φιλοσοφία, οι αποδεικτικές χριστιανικές αρχές δεν προέρχονται από τον κτιστό κόσμο και επομένως δεν προκύπτουν μέσω μιας νοητικής εποπτείας (ταύτιση είναι και νοείν), αλλά δια της προσωπικής μέθεξης των ακτίστων θείων ενεργειών. Επομένως η χριστιανική γνωσιολογία δεν στηρίζεται στη δεδομένη οντολογία, αλλά στόν ιδιαίτερο οντολογικό τόπο των θείων ενεργειών
description: The current doctoral dissertation constitutes a study of the substance of Christian gnoseology in relation to Platonic and Aristotelian philosophy according to Saint Gregory Palamas. However, the Platonic and Aristotelian philosophy has not been here considered just as a logic system but as a religious philosophy (homoiosis theo). That is the reason why Saint Gregory Palamas strictly criticizes the quality of the religious background of Hellenic philosophy, by controlling it with the ascetic practice of distinguishing the spirits (discretio spirituum). Nonetheless, the main difference between Platonic-Aristotelian philosophy and Christian gnoseology is that the former is based on ontology whereas the latter on the uncreated energies. Therefore Christian gnoseology confronts a new ontology.
Disks and winds around hot stars: new insights from multi-wavelength spectroscopy and interferometry
Creators: name: de Almeida, E. S. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Hot stars are the main source of ionization of the interstellar medium and its enrichment due to heavy elements. Constraining the physical conditions of their environments is crucial to understand how these stars evolve and their impact on the evolution of galaxies. The objective of my thesis was to investigate the physical properties of the photosphere and circumstellar environment of massive hot stars confronting multi-band spectroscopic or spectro-interferometric observations and sophisticated non-LTE radiative transfer codes. My work was focused on two main lines of research. The first concerns radiative line-driven winds. Using UV and visible spectroscopic data and the radiative transfer code CMFGEN, I investigated the weak wind phenomenon on a sample of nine Galactic O stars. This study shows for the first time that the weak wind phenomenon, originally found for O dwarfs, also exists on more evolved O stars and that future studies must evaluate its impact on the evolution of massive stars. My other line of research concerns the study of classical Be stars, the fastest rotators among the non-degenerated stars, and which are surrounded by rotating equatorial disks. I studied the Be star $ο$ Aquarii using H$α$ (CHARA/VEGA) and Br$γ$ (VLTI/AMBER) spectro-interferometric observations, the radiative transfer code HDUST, and developing new automatic procedures to better constrain the kinematics of the disk. This multi-band study allowed to draw the most detailed picture of this object and its environment, to test the limits of the current generation of radiative transfer models, and paved the way to my future work on a large samples of Be stars observed with VEGA, AMBER, and the newly available VLTI mid-infrared combiner MATISSE.
description: PhD Thesis, Universit\'e C\^ote d'Azur, Observatoire de la C\^ote d'Azur, 2020, 300 pages, in English. Abstract shortened to fit within arXiv character limit
Photoluminescence kinetics of dark and bright excitons in atomically thin MoS$_2$
Creators: name: Eliseyev, Ilya A.
name: Galimov, Aidar I.
name: Rakhlin, Maxim. V.
name: Evropeitsev, Evgenii A.
name: Toropov, Alexey A.
name: Davydov, Valery Yu.
name: Thiele, Sebastian
name: Pezoldt, Jörg
name: Shubina, Tatiana V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The fine structure of the exciton spectrum, containing optically allowed (bright) and forbidden (dark) exciton states, determines the radiation efficiency in nanostructures. We study time-resolved micro-photoluminescence in MoS$_2$ monolayers and bilayers, both unstrained and compressively strained, in a wide temperature range (10-300 K) to distinguish between exciton states optically allowed and forbidden, both in spin and momentum, as well as to estimate their characteristic decay times and contributions to the total radiation intensity. The decay times were found to either increase or decrease with increasing temperature, indicating the lowest bright or lowest dark state, respectively. Our results unambiguously show that, in an unstrained monolayer, the spin-allowed state is the lowest for a series of A excitons (1.9 eV) with the dark state being < 2 meV higher, and that the splitting energy can increase several times at compression. In contrast, in the indirect exciton series in bilayers (1.5 eV), the spin-forbidden state is the lowest, being about 3 meV below the bright one. The strong effect of strain on the exciton spectrum can explain the large scatter among the published data and must be taken into account to realize the desired optical properties of 2D MoS$_2$.
Tailoring, synthesis and structure-property relationships of 2,3-thienoimide based molecular materials
Creators: name: Durso, Margherita <1986>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: CHIM/06 Chimica organica

description: Organic molecular semiconductors are subject of intense research for their crucial role as key components of new generation low cost, flexible, and large area electronic devices such as displays, thin-film transistors, solar cells, sensors and logic circuits. In particular, small molecular thienoimide (TI) based materials are emerging as novel multifunctional materials combining a good processability together to ambipolar or n-type charge transport and electroluminescence at the solid state, thus enabling the fabrication of integrated devices like organic field effect transistors (OFETs) and light emitting transistor (OLETs). Given this peculiar combination of characteristics, they also constitute the ideal substrates for fundamental studies on the structure-property relationships in multifunctional molecular systems. In this scenario, this thesis work is focused on the synthesis of new thienoimide based materials with tunable optical, packing, morphology, charge transport and electroluminescence properties by following a fine molecular tailoring, thus optimizing their performances in device as well as investigating and enabling new applications. Investigation on their structure-property relationships has been carried out and in particular, the effect of different π-conjugated cores (heterocycles, length) and alkyl end chain (shape, length) changes have been studied, obtaining materials with enhanced electron transport capability end electroluminescence suitable for the realization of OFETs and single layer OLETs. Moreover, control on the polymorphic behaviour characterizing thienoimide materials has been reached by synthetic and post-synthetic methodologies, developing multifunctional materials from a single polymorphic compound. Finally, with the aim of synthesizing highly pure materials, simplifying the purification steps and avoiding organometallic residues, procedures based on direct arylation reactions replacing conventional cross-couplings have been investigated and applied to different classes of molecules, bearing thienoimidic core or ends, as well as thiophene and anthracene derivatives, validating this approach as a clean alternative for the synthesis of several molecular materials.
Evolution of low-mass star and brown dwarf eclipsing binaries
Creators: name: Chabrier, Gilles
name: Gallardo, Jose
name: Baraffe, Isabelle
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the evolution of low-mass star and brown dwarf eclipsing binaries. These objects are rapid rotators and are believed to shelter large magnetic fields. We suggest that reduced convective efficiency, due to fast rotation and large field strengths, and/or to magnetic spot coverage of the radiating surface significantly affect their evolution, leading to a reduced heat flux and thus larger radii and cooler effective temperatures than for regular objects. We have considered such processes in our evolutionary calculations, using a phenomenological approach. This yields mass-radius and effective temperature-radius relationships in agreement with the observations. We also reproduce the effective temperature ratio and the radii of the two components of the recently discovered puzzling eclipsing brown dwarf system. These calculations show that fast rotation and/or magnetic activity may significantly affect the evolution of eclipsing binaries and that the mechanical and thermal properties of these objects depart from the ones of non-active low-mass objects. We find that, for internal field strengths compatible with the observed surface value of a few kiloGauss, convection can be severely inhibited. The onset of a central radiative zone for rapidly rotating active low-mass stars might thus occur below the usual $\sim 0.35 \msol$ limit.
description: to appear in A&A Letters
Managing the less developed countries' debt problem
Creators: name: Orie, Kenneth Kanu
Publisher: name: University of British Columbia
Year: 2010

description: The underlying problem in debt management has been the allocation of the global adjustment burden between the creditors and the debtors and to make them less sensitive to the colossal economic sacrifice attendant to the adjustment. The Brady Plan seems to strike a balance between the opposing interests of the parties involved. But the question of whether such a balance can be sustained in the long run is still open. All the debt management strategies evaluated in this work seem inadequate in so far as they could not abate the recurrence of the problem. But they nevertheless, appear to be the best that can be offered in the face of the reality of the world economic situation. The susceptibility of the Less Developed Countries (LDCs) to foreign indebtedness is rooted in the poor structure and relatively undiversified nature of their economies. Thus the economic growth of these countries seems a panacea to the debt problem. To this end, the LDCs have to ensure that their economies undergo vigorous economic reforms congruent with the present and prospective realities of the world economy, aimed at lifting supply constraints, attracting foreign investments and encouraging debt-equity swaps which seems to be making a considerable inroad to effective debt management in that it saves debtor countries steep foreign exchange commitment needed for international trade and debt servicing. The economic interdependence of nations makes the success of this strategy contingent upon a 3% minimum GDP growth rate in the industrialized countries to generate not only good market for LDCs’ tradeables but also to forestall exogenous factors that promote the recurrence of the problem. Clearly, this matter is not within the province of international law. The problem is basically economic and must be practically handled and resolved in the same context. In the context of the debt problem and management, international law cannot make possible what is economically impossible. Debtors are therefore advised to save themselves the problem of international indebtedness by matching expenditures with available resources at all times while the creditor countries themselves tamper their economic policies to check the exogenous factors which promote the recurrence of the problem.
Thermal diffusivity and its lower bound in orthorhombic SnSe
Creators: name: Martelli, Valentina
name: Abud, Fabio
name: Jiménez, Julio Larrea
name: Baggio-Saitovich, Elisa
name: Zhao, Li-Dong
name: Behnia, Kamran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The orthorhombic monochalcogenide SnSe has attracted much attention in recent years as a promising high-temperature thermoelectric material. We present a study of its thermal conductivity and specific heat of SnSe between 2~K and 300~K and quantify its anisotropic thermal diffusivity, $D$. For both crystallographic orientations, thermal diffusivity remains above the recently identified Planckian limit ($D > v_s^2 τ_P$, where $v_s$ is the sound velocity and $τ_P= \hbar/k_BT$) and its anisotropy in $D$ is set by the anisotropy of $v_s$. Comparison with cubic members of the IV-VI family leads to a consistent picture, where the diffusivity in all members of the family is set by the product of v$_s$, $τ_P$ and the 'melting' velocity derived from the melting temperature.
Studies on optimizing potential energy functions for maximal intrinsic hyperpolarizability
Creators: name: Zhou, Juefei
name: Szafruga, Urszula B.
name: Watkins, David S.
name: Kuzyk, Mark G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We use numerical optimization to study the properties of (1) the class of one-dimensional potential energy functions and (2) systems of point charges in two-dimensions that yield the largest hyperpolarizabilities, which we find to be within 30% of the fundamental limit. We investigate the character of the potential energy functions and resulting wavefunctions and find that a broad range of potentials yield the same intrinsic hyperpolarizability ceiling of 0.709.
description: 9 pages, 9 figures
Dyson-Schwinger equation approach to Lorentz Symmetry Breaking with finite temperature and chemical potential
Creators: name: Gomes, Y. M. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we investigate the dynamical breakdown of Lorentz symmetry in 4 dimensions by the condensation of a fermionic field described by a Dirac Lagrangian with a four-fermion interaction. Using the Keldysh formalism we show that the Lorentz symmetry breaking modifies the Dyson-Schwinger equations of the fermionic propagator. We analyze the nonperturbative solutions for the Dyson-Schwinger equations using the combination of the rainbow and quenched approximations and show that, in equilibrium, the Lorentz symmetry breakdown can occur in the strong coupling regime and new features arise from this approach. Finally, we analyze the contributions of temperature and chemical potential and find the respective phase diagram of the model and analyze the dependence of the critical temperature and chemical potential as functions of the coupling constant.
description: Published version
Studies on detachment behavior of micron sized droplets: A comparison between pure fluid and nanofluid
Creators: name: S. C. Fu
name: Y. S. Cheung
name: H. H. Lee
name: Kwan, Joseph K. C.
name: Chao, Christopher Y. H.
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biophysics
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Computational Biology

description: Resuspension is considered as a source of indoor air pollutants. These airborne pollutants can be in the form of liquid or solid. It has been previously found that the detachment mechanism of liquid droplets is different from the solid particles on the poly(methyl methacrylate) (PMMA) surface. Liquid droplets detach by portion when they are under an increasing normal force field while droplets detach completely when under a tangential force field. In this research, droplet detachment experiments are extended to different substrate materials, which are PMMA, glass, and stainless steel by the means of centrifuge. Also, the differences in detachment between pure glycerol-water (pure fluid) and a glycerol solution with the addition of nanoparticles (nanofluid) are investigated under different substrate materials. It is found that liquid droplets, again, detach by portion under normal force for all the substrate materials. For tangential force, the droplets detach completely if the exerted force was sufficiently large and the threshold values are material dependent, which is further elaborated by retention theory. After the addition of nanoparticles, a higher removal force was required compared to the droplets of pure fluid within the same size range. Also, solid residues with a negligible amount of fluid were found on the substrate after each removal of droplets under both normal and tangential force. The involvement of nanoparticles could be the pioneer work for future studies on commonly found liquid pollutants, which are prone to be contaminated by solid particles, such as in salivary excretion. Copyright © 2018 American Association for Aerosol Research
Stacked CMB lensing and ISW signals around superstructures in the DESI Legacy Survey
Creators: name: Hang, Qianjun
name: Alam, Shadab
name: Cai, Yan-Chuan
name: Peacock, John
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The imprints of large-scale structures on the Cosmic Microwave Background can be studied via the CMB lensing and Integrated Sachs-Wolfe (ISW) signals. In particular, the stacked ISW signal around supervoids has been claimed in several works to be anomalously high. In this study, we find cluster and void superstructures using four tomographic redshift bins with $0
description: 14 pages, 10 figures, revised to match the accepted version on MNRAS
Critical test for Altshuler-Aronov theory: Evolution of the density of states singularity in double perovskite Sr$_2$FeMoO$_6$ with controlled disorder
Creators: name: Kobayashi, M.
name: Tanaka, K.
name: Fujimori, A.
name: Ray, Sugata
name: Sarma, D. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: With high-resolution photoemission spectroscopy measurements, the density of states (DOS) near the Fermi level ($E_\mathrm{F}$) of double perovskite Sr$_2$FeMoO$_6$ having different degrees of Fe/Mo antisite disorder has been investigated with varying temperature. The DOS near $E_\mathrm{F}$ showed a systematic depletion with increasing degree of disorder, and recovered with increasing temperature. Altshuler-Aronov (AA) theory of disordered metals well explains the dependences of the experimental results. Scaling analysis of the spectra provides experimental indication for the functional form of the AA DOS singularity.
description: 5 pages, 4 figures
Scaling study of the pion electroproduction cross sections and the pion form factor
Creators: name: Horn, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The $^{1}$H($e,e^\prime π^+$)n cross section was measured for a range of four-momentum transfer up to $Q^2$=3.91 GeV$^2$ at values of the invariant mass, $W$, above the resonance region. The $Q^2$-dependence of the longitudinal component is consistent with the $Q^2$-scaling prediction for hard exclusive processes. This suggests that perturbative QCD concepts are applicable at rather low values of $Q^2$. Pion form factor results, while consistent with the $Q^2$-scaling prediction, are inconsistent in magnitude with perturbative QCD calculations. The extraction of Generalized Parton Distributions from hard exclusive processes assumes the dominance of the longitudinal term. However, transverse contributions to the cross section are still significant at $Q^2$=3.91 GeV$^2$.
description: 6 pages, 3 figures
Studies on Detachment Behavior of Micron Sized Droplets: A Comparison between Pure Fluid and Nanofluid
Creators: name: S. C. Fu
name: Y. S. Cheung
name: H. H. Lee
name: Kwan, Joseph K. C.
name: Chao, Christopher Y. H.
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biophysics
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Computational Biology

description: Resuspension is considered as a source of indoor air pollutants. These airborne pollutants can be in the form of liquid or solid. It has been previously found that the detachment mechanism of liquid droplets is different from the solid particles on the poly(methyl methacrylate) (PMMA) surface. Liquid droplets detach by portion when they are under an increasing normal force field while droplets detach completely when under a tangential force field. In this research, droplet detachment experiments are extended to different substrate materials, which are PMMA, glass and stainless steel by the means of centrifuge. Also, the differences in detachment between pure glycerol-water (pure fluid) and a glycerol solution with the addition of nanoparticles (nanofluid) are investigated under different substrate materials. It is found that liquid droplets, again, detach by portion under normal force for all the substrate materials. For tangential force, the droplets detach completely if the exerted force was sufficiently large and the threshold values are material dependent, which is further elaborated by retention theory. After the addition of nanoparticles, a higher removal force was required compared to the droplets of pure fluid within the same size range. Also, solid residues with a negligible amount of fluid were found on the substrate after each removal of droplets under both normal and tangential force. The involvement of nanoparticles could be the pioneer work for future studies on commonly found liquid pollutants, which are prone to be contaminated by solid particles, such as in salivary excretion.
Some Properties of and Open Problems on Hessian Nilpotent Polynomials
Creators: name: Zhao, Wenhua
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14R15, 32H02, 32A50

description: In the recent progress [BE1], [M], [Z1] and [Z2], the well-known Jacobian conjecture ([BCW], [E]) has been reduced to a problem on HN (Hessian nilpotent) polynomials (the polynomials whose Hessian matrix are nilpotent) and their (deformed) inversion pairs. In this paper, we prove several results on HN polynomials, their (deformed) inversion pairs as well as the associated symmetric polynomial or formal maps. We also propose some open problems for further study of these objects.
description: Latex, 33 pages. Some misprints have been corrected; English and also terminology for some newly defined notion have been improved. To appear in Annales Polonici Mathematici
Stochastic analysis and simulation of spin star systems
Creators: name: Breuer, Heinz-Peter
name: Petruccione, Francesco
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss two methods of an exact stochastic representation of the non-Markovian quantum dynamics of open systems. The first method employs a pair of stochastic product vectors in the total system's state space, while the second method uses a pair of state vectors in the open system's state space and a random operator acting on the state space of the environment. Both techniques lead to an exact solution of the von Neumann equation for the density matrix of the total system. Employing a spin star model describing a central spin coupled to bath of surrounding spins, we perform Monte Carlo simulations for both variants of the stochastic dynamics. In addition, we derive analytical expression for the expectation values of the stochastic dynamics to obtain the exact solution for the density matrix of the central spin.
description: 8 pages, 2 figures
Two Results on Homogeneous Hessian Nilpotent Polynomials
Creators: name: Essen, Arno van den
name: Zhao, Wenhua
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 14R15, 31B05

description: Let $z=(z_1, ..., z_n)$ and $Δ=\sum_{i=1}^n \frac {\partial^2}{\partial z^2_i}$ the Laplace operator. A formal power series $P(z)$ is said to be {\it Hessian Nilpotent}(HN) if its Hessian matrix $\Hes P(z)=(\frac {\partial^2 P}{\partial z_i\partial z_j})$ is nilpotent. In recent developments in [BE1], [M] and [Z], the Jacobian conjecture has been reduced to the following so-called {\it vanishing conjecture}(VC) of HN polynomials: {\it for any homogeneous HN polynomial $P(z)$ $($of degree $d=4$$)$, we have $Δ^m P^{m+1}(z)=0$ for any $m>>0$.} In this paper, we first show that, the VC holds for any homogeneous HN polynomial $P(z)$ provided that the projective subvarieties ${\mathcal Z}_P$ and ${\mathcal Z}_{σ_2}$ of $\mathbb C P^{n-1}$ determined by the principal ideals generated by $P(z)$ and $σ_2(z):=\sum_{i=1}^n z_i^2$, respectively, intersect only at regular points of ${\mathcal Z}_P$. Consequently, the Jacobian conjecture holds for the symmetric polynomial maps $F=z-\nabla P$ with $P(z)$ HN if $F$ has no non-zero fixed point $w\in \mathbb C^n$ with $\sum_{i=1}^n w_i^2=0$. Secondly, we show that the VC holds for a HN formal power series $P(z)$ if and only if, for any polynomial $f(z)$, $Δ^m (f(z)P(z)^m)=0$ when $m>>0$.
description: Latex, 7 pages
DEP bulletin 1986 - July - December
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 1986

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
Donor binding energy and thermally activated persistent photoconductivity in high mobility (001) AlAs quantum wells
Creators: name: Dasgupta, S.
name: Knaak, C.
name: Moser, J.
name: Bichler, M.
name: Roth, S. F.
name: Morral, A. Fontcuberta i
name: Abstreiter, G.
name: Grayson, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A doping series of AlAs (001) quantum wells with Si delta-modulation doping on both sides reveals different dark and post-illumination saturation densities, as well as temperature dependent photoconductivity. The lower dark two-dimensional electron density saturation is explained assuming deep binding energy of Delta_DK = 65.2 meV for Si-donors in the dark. Persistent photoconductivity (PPC) is observed upon illumination, with higher saturation density indicating shallow post-illumination donor binding energy. The photoconductivity is thermally activated, with 4 K illumination requiring post-illumination annealing to T = 30 K to saturate the PPC. Dark and post-illumination doping efficiencies are reported.
description: The values of binding energy changed from previous versions because of a better understanding for the dielectric permittivity. Also, the Gamma - X donor states are better explained
Mortality Rate Model due to Transportation Accidents in Thailand
Creators: name: Wattanavadee Sriwattanapongse
name: Sukon Prasitwattanaseree
name: Surin Khanabsakdi
name: Supreeya Wongtra-Ngan
Publisher: name: Silpakorn University Research and Development Institute
Year: 2013
Subjects: Mortality rate, Multivariate linear regression, Transportation accidents

description: 1, 7, Silpakorn University Science and Technology Journal
A Vanishing Conjecture on Differential Operators with Constant Coefficients
Creators: name: Zhao, Wenhua
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14R15, 33C45, 32W99

description: In the recent progress [BE1], [Me] and [Z2], the well-known JC (Jacobian conjecture) ([BCW], [E]) has been reduced to a VC (vanishing conjecture) on the Laplace operators and HN (Hessian nilpotent) polynomials (the polynomials whose Hessian matrix are nilpotent). In this paper, we first show that the vanishing conjecture above, hence also the JC, is equivalent to a vanishing conjecture for all 2nd order homogeneous differential operators $Λ$ and $Λ$-nilpotent polynomials $P$ (the polynomials $P(z)$ satisfying $Λ^m P^m=0$ for all $m\ge 1$). We then transform some results in the literature on the JC, HN polynomials and the VC of the Laplace operators to certain results on $Λ$-nilpotent polynomials and the associated VC for 2nd order homogeneous differential operators $Λ$. This part of the paper can also be read as a short survey on HN polynomials and the associated VC in the more general setting. Finally, we discuss a still-to-be-understood connection of $Λ$-nilpotent polynomials in general with the classical orthogonal polynomials in one or more variables. This connection provides a conceptual understanding for the isotropic properties of homogeneous $Λ$-nilpotent polynomials for the 2nd order homogeneous full rank differential operators $Λ$ with constant coefficients.
description: Latex, 32 pages. Following the referee, some minor improvements have been done. Appeared in the proceeding of the joint international conference "Polynomial Automorphisms and related topics" (Hanoi, Vietnam, 2006) of the Institute of Mathematics, Hanoi, Vietnam, and the Adus Salam International Centreof Theoretical Physics (ICTP), Trieste, Italy
Possible Measurable Effects of Dark Energy in Rotating Superconductors
Creators: name: de Matos, Clovis Jacinto
name: Beck, Christian
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss recent laboratory experiments with rotating superconductors and show that three so far unexplained experimentally observed effects (anomalous acceleration signals, anomalous gyroscope signals, Cooper pair mass excess) can be physically explained in terms of a possible interaction of dark energy with Cooper pairs. Our approach is based on a Ginzburg-Landau-like model of electromagnetic dark energy, where gravitationally active photons obtain mass in the superconductor. We show that this model can account simultaneously for the anomalous acceleration and anomalous gravitomagnetic fields around rotating superconductors measured by Tajmar et al. and for the anomalous Cooper pair mass in superconductive Niobium, measured by Cabrera and Tate. It is argued that these three different physical effects are ultimately different experimental manifestations of the simultaneous spontaneous breaking of gauge invariance, and of the principle of general covariance in superconductive materials.
description: 22 pages
Magnetar-Driven Shock Breakout Revisited and Implications for Double-Peaked Type I Superluminous Supernovae
Creators: name: Liu, Liang-Duan
name: Gao, He
name: Wang, Xiao-Feng
name: Yang, Sheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The discovery of early bumps in some type-I superluminous supernovae (SLSNe-I) before the main peaks offers an important clue to their energy source mechanisms. In this paper, we updated an analytic magnetar-powered model for fitting the multi-band light curves of double-peaked SLSNe-I: the early bump is powered by magnetar-driven shock breakout thermal emission, and the main peak is powered by a radiative diffusion through the SN ejecta as in the standard magnetar-powered model. Generally, the diffusive luminosity is greater than the shock breakout luminosity at the early time, which makes the shock breakout bumps usually not clearly seen as observed. To obtain a clear double-peaked light curve, inefficient magnetar heating at early times is required. This model is applied to three well-observed double-peaked SLSNe-I (i.e., SN2006oz, LSQ14bdq, and DES14Xtaz). We find that a relative massive SN ejecta with $M_{\mathrm{ej}} \simeq 10.2-18.1 M_{\odot}$ and relative large kinetic energy of SN ejecta $E_{\mathrm{sn}} \simeq (3.8-6.5) \times 10^{51}$ erg are required, and the thermalization efficiency of the magnetar heating is suppressed before $t_{\mathrm{delay}}$, which are in the range of $\simeq 15- 43$ days. The model can well reproduce the observed light curves, with a reasonable and similar set of physical parameters for both the early bump and the main peak, strengthening support for magnetar-powered model. In the future, modeling of the double-peaked SLSNe-I will become more feasible as more events are discovered before the early bump.
description: 12 page, 3 figures, Accepted by ApJ
title: LiCArC. 2013, n° 1
title: Littérature et culture arabes contemporaines. En deçà et au-delà des limites
titleType: Subtitle
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2013
Subjects: subject: Littérature arabe
subject: Littérature arabophone
subject: Histoire contemporaine
subject: Poésie arabe
subject: Traductologie

description: Contributeurs : Nehmetallah Abi-Rached, Kawthar Ayed, Sylvie Chraïbi, Laurence Denooz, Salam Diab Duranton, Géhane Essawy, Miloud Gharrafi, Hanan Hashem, Nabil Hobeika, Abdendi Lachbar et Bénédicte Letellier.
The right of succession in international law : a new theory of legitimacy
Creators: name: Simpson, Gerry J.
Publisher: name: University of British Columbia
Year: 2010

description: Secession is the process by which a territorially discrete entity within a state achieves independence from that state. In this thesis a code of legality is devised which legitimizes secession in certain cases without advocating the breakdown of world order. The right of secession envisaged derives its force not from political concepts such as democracy, liberalism or socialism, but from the right in international law to self-determination. To this end, an historical introduction is offered which traces the historical roots of the right to self-determination and its earliest connection with secession. This study illustrates how the transformation of self-determination from political principle to legal right in the era of the United Nations and decolonization led to a restrictive interpretation of the concept. This interpretation, it is argued, has neglected the link between self-determination, human rights and the right to secede. Self-determination has consequently been drained of significance at the very moment when it should be in the vanguard of the quest for a world order based on respect for human rights. This study, therefore, has several purposes. First, a basis in international law for a right of secession is sought by analyzing the provisions of several United Nations Declarations on self-determination. Second, the humanitarian potential of the right of secession is realized by renewing the link between human rights and self-determination in a novel theory of legitimacy. Third, an index of validity is outlined by which the legitimacy of a particular secession can be ascertained using criteria which take into account political, economic and moral as well as legal factors. This index is referred to throughout the paper in five case studies which illustrate the varying practical consequences of applying this theory of legitimacy. In this way, a theory of secession is proposed which subscribes to the rules of international law and the realities of the international political system while providing a conceptual foundation for a humane world order.
A morphology-independent test of the mixed polarization content of gravitational wave signals from compact binary coalescences
Creators: name: Chatziioannou, Katerina
name: Isi, Maximiliano
name: Haster, Carl-Johan
name: Littenberg, Tyson B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gravitational waves in general relativity contain two polarization degrees of freedom, commonly labeled plus and cross. Besides those two tensor modes, generic theories of gravity predict up to four additional polarization modes: two scalar and two vector. Detection of nontensorial modes in gravitational wave data would constitute a clean signature of physics beyond general relativity. Previous measurements have pointed to the unambiguous presence of tensor modes in gravitational waves, but the presence of additional generic nontensorial modes has not been directly tested. We propose a model-independent analysis capable of detecting and characterizing mixed tensor and nontensor components in transient gravitational wave signals, including those from compact binary coalescences. This infrastructure can constrain the presence of scalar or vector polarization modes on top of the tensor modes predicted by general relativity. Our analysis is morphology-independent (as it does not rely on a waveform templates), phase-coherent, and agnostic about the source sky location. We apply our analysis to data from GW190521 and simulated data and demonstrate that it is capable of placing upper limits on the strength of nontensorial modes when none are present, or characterizing their morphology in the case of a positive detection. Tests of the polarization content of a transient gravitational wave signal hinge on an extended detector network, wherein each detector observes a different linear combination of polarization modes. We therefore anticipate that our analysis will yield precise polarization constraints in the coming years, as the current ground-based detectors LIGO Hanford, LIGO Livingston, and Virgo are joined by KAGRA and LIGO India.
description: 19 pages, 15 figures, published version
N_p N_n Scheme Based on New Empirical Formula for Excitation Energy
Creators: name: Yoon, Jin-Hee
name: Ha, Eunja
name: Cha, Dongwoo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We examine the $N_p N_n$ scheme based on a recently proposed simple empirical formula which is highly valid for the excitation energy of the first excited natural parity even multipole states in even-even nuclei. We demonstrate explicitly that the $N_p N_n$ scheme for the excitation energy emerges from the separate exponential dependence of the excitation energy on the valence nucleon numbers $N_p$ and $N_n$ together with the fact that only a limited set of numbers is allowed for the $N_p$ and $N_n$ of the existing nuclei.
description: 11 pages, 7 figures
Density-PDFs and Lagrangian Statistics of highly compressible Turbulence
Creators: name: Beetz, Christoph
name: Schwarz, Christian
name: Dreher, Jürgen
name: Grauer, Rainer
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report on probability-density-functions (PDF) of the mass density in numerical simulations of highly compressible hydrodynamic flows and the corresponding structure formation of Lagrangian particles advected by the flows. Numerical simulations were performed with $512^3$ collocation points and 2 million tracer particles integrated over several dynamical times. We propose a connection between the PDF of the Lagrangian tracer particles and the predicted log-normal distribution of the density fluctuations in isothermal systems.
Carbon-enhanced stars with short orbital and spin periods
Creators: name: Whitehouse, L. J.
name: Farihi, J.
name: Howarth, I. D.
name: Mancino, S.
name: Walters, N.
name: Swan, A.
name: Wilson, T. G.
name: Guo, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Many characteristics of dwarf carbon stars are broadly consistent with a binary origin, including mass transfer from an evolved companion. While the population overall appears to have old-disc or halo kinematics, roughly 2$\,$per cent of these stars exhibit H$α$ emission, which in low-mass main-sequence stars is generally associated with rotation and relative youth. Its presence in an older population therefore suggests either irradiation or spin-up. This study presents time-series analyses of photometric and radial-velocity data for seven dwarf carbon stars with H$α$ emission. All are shown to have photometric periods in the range 0.2--5.2$\,$d, and orbital periods of similar length, consistent with tidal synchronisation. It is hypothesised that dwarf carbon stars with emission lines are the result of close-binary evolution, indicating that low-mass, metal-weak or metal-poor stars can accrete substantial material prior to entering a common-envelope phase.
description: 16 pages, 7 figures, Accepted to MNRAS
Cahiers de lexicologie. 1982-1, n° 40
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2012
Subjects: subject: Lexique
subject: Lexicographie
subject: Sémantique
subject: Traduction
subject: Linguistique historique

description: Les Cahiers de lexicologie, revue internationale de lexicologie et de lexicographie, s'intéressent au lexique dans ses relations avec les autres composantes de la langue (syntaxe, sémantique, morphologie, phonologie, discours…), tant du point de vue théorique que de leurs applications, notamment pour ce qui concerne le traitement informatique de la langue.
description: The Cahiers de lexicologie, international review of lexicology and lexicography, studies vocabulary in its relation to other aspects of language (syntax, semantics, morphology, phonology, speech...), both from a theoretical point of view and in practical applications, notably concerning computer treatment of language.