cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Blade Vibration on Centrifugal Compressors — Blade Response to Different Excitation Conditions
Creators: name: Haupt, U.
name: Bammert, K.
name: Rautenberg, M.
Publisher: name: Berlin : De Gruyter
Year: 1987
Subjects: subject: Blade Vibration
subject: High Pressure Ratio
subject: Centrifugal Compressor
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Results and analysis of blade vibration measurements on a high pressure ratio/high mass flow centrifugal compressor made with strain gages and using multichannel telemetry are described for compressors with 3 different types of vaned diffusers. Considerable high frequency blade excitation and vibration of the shallow region near the impeller outlet were observed. Initial progress to predict this dangerous excitation caused by the diffuser vanes was made with the help of FE computations using a simplified element system consisting of the vibrating zones of a 90ºsector of the impeller. Satisfactory agreement with measured vibration data was achieved. The influence of rotating stall on blade excitation was investigated using different types of vaned diffusers leading to different numbers of rotation stall zones and variations in the rotational speed of the cells. Blade vibration intensity due to surge in conjunction with variations of the diffuser is also considered. Holographic interferometry was successfully applied to blade vibration measurements on compressors in operation. The investigation was aimed at studying the occurrence of blade modes and the vibratory behavior of the different blades near the interesting inlet zone. The occurrence of different constellations of blade modes at a resonance point and at an operating point far from resonance was demonstrated. © Freund Publishing House Ltd.
Decision - Information - time/space
Creators: name: Overmeyer, Ludger
name: Stock, Andreas
Publisher: name: Bingley : Emerald Group Publishing Ltd.
Year: 2007
Subjects: subject: Cybernetics
subject: Decision making
subject: Information control
subject: Time study
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Purpose - The standard terms of time and space lead to logical contradictions near the borderline of physics. Therefore, we suggest a new term for time and space, which enlarges the understanding but takes the actual knowledge of quantum mechanics into account. Design/methodology/approach - The procedure to define a broader and basic term of time and space is based on the relation between the information stored inside a system, the decision which is to be connected with it and the interaction with other systems. Findings - Fundamental to this new understanding is a definition and an explanation of the terms system, decision and information. Based on these three terms we developed a new understanding of time and space. In which case, it involves a specifying and extension of the present understandings. A meaningful point is that these three terms determine each other as they are open terms. Thus, they must be used in the interactive description before and during their own definition. Originality/value - Produces a new understanding and viewpoint which is enlarged by taking into account the knowledge of quantum mechanics. © Emerald Group Publishing Limited.
Haloalkane adsorption into 1D ensembles’ channels: Zn(II) coordination polymers
Creators: name: Lee, Haeri
name: Lee, Daseul
name: Jung, Ok-Sang
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology

description: Self-assembly of ZnX2 (X– = Cl–, Br– and I–) with 2,7-bis(isonicotinoyloxy)naphthalene (L) in a mixture of ethanol and dichloromethane yields 1D zigzag chains of [ZnX2L·2CH2Cl2]n composition. The 1D chains form an ensemble constituting hydrophobic suprachannels of 4.0-4.4 × 4.4-5.0 Å2 with repeat units of ZnL for [ZnCl2L] and [ZnBr2L], and those of 5.2 × 12.0 Å2 with repeat units of Zn2L2 for [ZnI2L] in the appropriate arrays via C–H···π and π···π interactions. The most interesting feature is that alcohol molecules are not incorporated into the haloalkane-philic channels. That is, the channels discriminate haloalkanes from alcohols. Furthermore, the exchange of solvate molecules in a crystalline state indicates that the unique channels show different absorptions of haloalkanes such as CH2Cl2, CH2Br2, CH2I2, CHCl3, 1,2-dichloroethane and 1,2-dibromoethane.
Martin Kintzinger, Wolfgang Stürner, Johannes Zahlten (Hrsg.), Das Andere wahrnehmen. Beiträge zur europäischen Geschichte. August Nitschke zum 65. Geburtstag gewidmet, 1991
Creators: name: Kolmer, Lothar
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 21, Nr. 1 (1994)
Three-Dimensional Relativistic Magnetohydrodynamic Simulations of Current-Driven Instability. III. Rotating Relativistic Jets
Creators: name: Mizuno, Yosuke
name: Lyubarsky, Yuri
name: Nishikawa, Ken-Ichi
name: Hardee, Philip E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We have investigated the influence of jet rotation and differential motion on the linear and nonlinear development of the current-driven (CD) kink instability of force-free helical magnetic equilibria via three-dimensional relativistic magnetohydrodynamic simulations. In this study, we follow the temporal development within a periodic computational box. Displacement of the initial helical magnetic field leads to the growth of the CD kink instability. We find that, in accord with linear stability theory, the development of the instability depends on the lateral distribution of the poloidal magnetic field. If the poloidal field significantly decreases outwards from the axis, the initial small perturbations grow strongly, and if multiple wavelengths are excited non-linear interaction eventually disrupts the initial cylindrical configuration. When the profile of the poloidal field is shallow, the instability develops slowly and eventually saturates. We briefly discuss implications of our findings for Poynting dominated jets.
description: 30 pages, 11 figures, and 1 table, accepted to ApJ
Unveiling the super-orbital modulation of LSI +61 303 in X-rays
Creators: name: Li, Jian
name: Torres, Diego F.
name: Zhang, Shu
name: Hadasch, Daniela
name: Rea, Nanda
name: Caliandro, G. Andrea
name: Chen, Yupeng
name: Wang, Jianmin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We found evidence for the super-orbital modulation in the X-ray emission of LS I +61 303 from the longest monitoring date by the RXTE. The time evolution of the modulated fraction in the orbital light curves can be well fitted with a sinusoidal function having a super-orbital period of 1667 days. However, we have found a 281.8+/-44.6 day shift between the super-orbital variability found at radio frequencies and our X-ray data. We also find a super-orbital modulation in the maximum count rate of the orbital light curves, compatible with the former results, including the shift.
description: 2 pages; to appear in the Proceedings of IAUS 290 "Feeding Compact Objects: Accretion on All Scales", C. M. Zhang, T. Belloni, M. Mendez & S. N. Zhang (eds.)
Heisenberg-invariant kummer surfaces
Creators: name: Hulek, K.
name: Nieto, I.
name: Sankaran, G.K.
Publisher: name: Cambridge : Cambridge University Press
Year: 2000
Subjects: subject: Abelian surface
subject: Classical algebraic geometry
subject: Kummer surface
subject: Moduli
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We study, from the point of view of abelian and Kummer surfaces and their moduli, the special quintic threefold known as Nieto's quintic. It is, in some ways, analogous to the Segre cubic and the Burkhardt quartic and can be interpreted as a moduli space of certain Kummer surfaces. It contains 30 planes and has 10 singular points: we describe how some of these arise from bielliptic and product abelian surfaces and their Kummer surfaces. © Cambridge University Press 2000.
New results about multi-band uncertainty in Robust Optimization
Creators: name: Büsing, Christina
name: D'Andreagiovanni, Fabio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: Data Structures and Algorithms (cs.DS)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 90C05, 90C35, 90C57, 90C90

description: "The Price of Robustness" by Bertsimas and Sim represented a breakthrough in the development of a tractable robust counterpart of Linear Programming Problems. However, the central modeling assumption that the deviation band of each uncertain parameter is single may be too limitative in practice: experience indeed suggests that the deviations distribute also internally to the single band, so that getting a higher resolution by partitioning the band into multiple sub-bands seems advisable. The critical aim of our work is to close the knowledge gap about the adoption of a multi-band uncertainty set in Robust Optimization: a general definition and intensive theoretical study of a multi-band model are actually still missing. Our new developments have been also strongly inspired and encouraged by our industrial partners, which have been interested in getting a better modeling of arbitrary distributions, built on historical data of the uncertainty affecting the considered real-world problems. In this paper, we study the robust counterpart of a Linear Programming Problem with uncertain coefficient matrix, when a multi-band uncertainty set is considered. We first show that the robust counterpart corresponds to a compact LP formulation. Then we investigate the problem of separating cuts imposing robustness and we show that the separation can be efficiently operated by solving a min-cost flow problem. Finally, we test the performance of our new approach to Robust Optimization on realistic instances of a Wireless Network Design Problem subject to uncertainty.
description: 15 pages. The present paper is a revised version of the one appeared in the Proceedings of SEA 2012
Scalar fundamental measure theory for hard spheres in three dimensions. Application to hydrophobic solvation
Creators: name: Levesque, Maximilien
name: Vuilleumier, Rodolphe
name: Borgis, Daniel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Hard-sphere mixtures provide one a solvable reference system that can be used to improve the density functional theory of realistic molecular fluids. We show how the Kierlik-Rosinberg's scalar version of the fundamental measure density functional theory of hard spheres [Phys. Rev. A, {\bf 42}, 3382 (1990)], which presents computational advantages with respect to the original Rosenfeld's vectorial formulation or its extensions, can be implemented and minimized in three dimensions to describe fluid mixtures in complex environments. This implementation is used as a basis for defining a molecular density functional theory of water around molecular hydrophobic solutes of arbitrary shape.
description: 10 pages, 8 figures, 1 table, 90 references
Minimal Siegel modular threefolds
Creators: name: Gritsenko, Valerie
name: Hulek, Klaus
Publisher: name: Cambridge : Cambridge University Press
Year: 1998
Subjects: subject: Ascr
subject: Siegel
subject: Siegel modular threefold
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: The starting point of this paper is the maximal extension of, the subgroup of Sp4(Q) which is conjugate to the paramodular group. Correspondingly we call the quotient, the minimal Siegel modular threefold. The space, and the intermediate spaces between which is the space of (1,t)-polarized abelian surfaces and have not yet been studied in any detail. Using the Torelli theorem we first prove that can be interpreted as the space of Kummer surfaces of (1,t)-polarized abelian surfaces and that a certain degree 2 quotient of, which lies over is a moduli space of lattice polarized K3 surfaces. Using the action of on the space of Jacobi forms we show that many spaces between and possess a nontrivial 3-form, i.e. the Kodaira dimension of these spaces is non-negative. It seems a difficult problem to compute the Kodaira dimension of the spaces themselves. As a first necessary step in this direction we determine the divisorial part of the ramification locus of the finite map. This is a union of Humbert surfaces which can be interpreted as Hilbert modular surfaces. © 1998, Cambridge University Press. All rights reserved.
Acrylic purification and coatings
Creators: name: Kuźniak, Marcin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Radon (Rn) and its decay daughters are a well-known source of background in direct WIMP detection experiments, as either a Rn decay daughter or an alpha particle emitted from a thin inner surface layer of a detector could produce a WIMP-like signal. Different surface treatment and cleaning techniques have been employed in the past to remove this type of contamination. A new method of dealing with the problem has been proposed and used for a prototype acrylic DEAP-1 detector. Inner surfaces of the detector were coated with a layer of ultra pure acrylic, meant to shield the active volume from alphas and recoiling nuclei. An acrylic purification technique and two coating techniques are described: a solvent-borne (tested on DEAP-1) and solvent-less (being developed for the full scale DEAP-3600 detector).
description: Proceedings of Topical Workshop on Low Radioactivity Techniques (LRT 2010), SNOLAB, Sudbury, Canada, Aug 28-29, 2010
Mechanochemical syntheses, crystal structures, and photo-luminescent properties of a new hydrazone and its nickel and cadmium complexes
Creators: name: Sathiyakumar, Subramani
name: Selvam, Pitchai
name: Hakkim, Faruck Lukmanul
name: Srinivasan, Krishnan
name: T. A. Harrison, William
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Plant Biology

description: A new hydrazone, ethyl Z-2-(pyridine-2yl-methylene)hydrazinecarboxylate (C9H11N3O2; Hpyec) and its metal complexes bis(ethyl Z-2-(pyridine-2yl-methylene)hydrazinecarboxylate)nickel(II) monohydrate, [Ni(pyec)2]·H2O (1) and bis(acetato)(ethyl Z-2-(pyridine-2yl-methylene)hydrazinecarboxylate)cadmium(II), [Cd(Hpyec)(CH3COO)2] (2), have been prepared by mechanochemical syntheses and characterized by elemental analysis, UV–vis, IR and NMR spectroscopies, TG-DTA, and solid state emission techniques. The X-ray single crystal structures of both complexes were determined. In 1, the Ni2+ ion is coordinated by two N,N,O-tridentate anionic ligands to generate a distorted cis-NiO2N4 octahedron. In 2, the cadmium ion is seven-coordinate by one neutral N,N,O-tridentate ligand and two chelating acetate ions to generate a very-distorted CdN2O5 pentagonal bipyramid with the Hpyec atoms occupying both axial and one equatorial site. Crystal data: 1, C18H22N6NiO5, Mr = 461.12, monoclinic, P21/c, a = 10.8759(3) Å, b = 11.7055(4) Å, c = 16.8424(5) Å, β = 108.583(1)°, V = 2032.38(11) Å3, Z = 4, R(F) = 0.023, wR(F2) = 0.065; 2, C13H17CdN3O6, Mr = 423.69, monoclinic, Cc, a = 13.0215(10) Å, b = 15.8104(11) Å, c = 7.99(6) Å, β = 96.692(2)°, V = 1621.7(2) Å3, Z = 4, R(F) = 0.017, wR(F2) = 0.038.
Papsturkunden 896–1046, bearbeitet von Harald Zimmermann. 1. Bd.: 896–996; 2. Bd.: 996–1046; 3. Bd.: Register, 1988–1989
Creators: name: Grosse, Rolf
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 21, Nr. 1 (1994)
Structural study, spectroscopic characterization, thermal behavior, DFT calculations and antimicrobial properties of a new hybrid compound, (C7H9N2)2[HgCl4]·H2O
Creators: name: Jomaa, Mariem Ben
name: Bourguiba, Noura Fakher
name: Chebbi, Hammouda
name: Abdelbaky, Mohammed S. M.
name: García-Granda, Santiago
name: Korbi, Nedra
name: Ouzari, Hadda-Imene
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Inorganic Chemistry
subject: 60506 Virology
subject: FOS: Biological sciences

description: A new bis(benzamidinium)tetrachloridomercurate(II) monohydrate, (C7H9N2)2[HgCl4]·H2O, was synthesized by slow evaporation at room temperature and characterized by powder XRD, IR, Raman, UV-vis spectroscopy and thermal analysis. Single-crystal X-ray diffraction analysis indicates that the asymmetric unit of the title compound is formed by tetrachloridomercurate [HgCl4]2− anion, a protonated organic cation (C7H9N2)2+ and one free water crystallization molecule. The cohesion of the structure is insured by N–H···Cl, O–H···Cl and N–H ···O hydrogen bonds and π-π stacking interactions. The density functional theory (DFT)-optimized structure at the B3LYP/6-311++G(2d,2p) level is compared with the experimentally determined molecular structure. Comprehensive experimental and theoretical structural studies on the compound are carried out through IR and UV-vis spectroscopies. The compound was characterized by thermal analysis to determine its thermal behavior with respect to the temperature. The in vitro antibacterial activity of the compound against different bacterial strains was evaluated. The three-dimensional Hirshfeld surface (3 D-HS) and the two-dimensional fingerprint plots (2 D-FP) reveal that the structure is dominated by H···Cl/Cl···H (51.0%) and H···H (32.3%) contacts.
Seismic comparison of the 11 and 2 yr cycle signatures in the Sun
Creators: name: Simoniello, R.
name: Jain, K.
name: Tripathy, S. C.
name: Turck-Chieze, S.
name: Finsterle, W.
name: Roth, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The solar magnetic activity consists of two periodic components: the main cycle with a period of 11 yr and a shorter cycle with a period of ~2 yrs. The origin of this second periodicity is still not well understood. We use almost 15 yrs of long high quality resolved data provided by the Global Oscillation Network Group (GONG) to investigate the solar cycle changes in p-mode frequency with spherical degree l=0-120 and in the range 1600muHz < nu < 3500 muHz. For both periodic components of solar magnetic activity our findings locate the origin of the frequency shift in the subsurface layers with a sudden enhancement in the amplitude of the shift in the last few hundred kilometers. We also show that the size of the shift increases towards equatorial latitudes and from minimum to maximum of solar activity. On the other hand, the signatures of the 2 yr cycle differ from the one of the 11 yr cycle in the magnitude of the shift, as the 2 yr cycle causes a weaker shift in mode frequencies and a slower enhancement in the last few hundreds kilometers. Based on these findings we speculate that a possible physical mechanism behind the quasi biennial periodicity (QBP) could be the beating between different dynamo modes (dipole and quadrupole mode)
description: 4 pages, 2 figures, Conference proceeding, The Modern Era of Helio and Asteroseismology, 20-25 May, Obergugl, Austria
Monodromy groups of irregular elliptic surfaces
Creators: name: Lönne, Michael
Publisher: name: Cambridge : Cambridge University Press
Year: 2002
Subjects: subject: Elliptic surface
subject: Monodromy
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: Monodromy groups, i.e. the groups of isometries of the intersection lattice Lx:= H2/torsion generated by the monodromy action of all deformation families of a given surface, have been computed by the author for any minimal elliptic surface with pg > q = 0. New and refined methods are now employed to address the cases of minimal elliptic surfaces with pg ≥ q > 0. Thereby we get explicit families such that any isometry is in the group generated by their monodromies or does not respect the invariance of the canonical class or the spinor norm. The monodromy is also shown to act by the full symplectic group on the first homology modulo torsion.
A three-dimensional manganese(II) coordination polymer: synthesis, structure and catecholase activity
Creators: name: Bhattacherjee, Prama
name: Mitra, Partha
name: Sarkar, Prasenjit
name: John, Rohith P.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: A manganese-based coordination polymer, [Mn2L2(µ-MeOH)2]n (H2L = 2-hydroxy-1-naphthaldehyde isonicotinoylhydrazone) was obtained by self-assembly of 2-hydroxy-1-naphthaldehyde isonicotinoylhydrazone and manganese(II) acetate. The coordination polymer was characterized by IR, EPR and UV–Vis spectroscopy. The single-crystal X-ray diffraction study reveals that the dibasic tridentate ligand (L2−) is bound via ONO donor sites to manganese(II). Two such [ML] fragments are connected by µ2-bridged methanol (MeOH) to form a di-manganese species. The sixth site of each of the manganese is occupied by the pyridyl N atom of the isonicotinoyl group. This arrangement gives a polynuclear complex of the formula [Mn2L2(µ-MeOH)2]n. The coordination geometry of manganese is distorted octahedral. The X-band electron paramagnetic resonance (EPR) measurement of the complex at 77 K shows a six-line spectrum and a signal at the half field, with g = 4.88. The half-field signal indicates the dimeric nature of the complex in the solution state. The cyclic voltammetric measurement of the complex shows a reversible MnIII/MnII redox couple. The complex catalyzes the conversion of 3,5-di-tert-butyl catechol to the corresponding o-quinone with a catalytic turnover rate of (kcat) 27.22 h−1.
Moduli spaces of irreducible symplectic manifolds
Creators: name: Gritsenko, V.
name: Hulek, K.
name: Sankaran, G.K.
Publisher: name: Cambridge : Cambridge University Press
Year: 2010
Subjects: subject: irreducible symplectic manifold
subject: moduli
subject: orthogonal groups
subject: Siegel formula for quadratic forms
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We study the moduli spaces of polarised irreducible symplectic manifolds. By a comparison with locally symmetric varieties of orthogonal type of dimension20, we show that the moduli space of polarised deformation K3 [2] manifolds with polarisation of degree 2d and split type is of general type if d≥12. © 2010 Foundation Compositio Mathematica.
Effect of ligand flexibility on dimensionality in cadmium(II)-2,2-dimethylglutarate complexes
Creators: name: Yaman, Pelin Köse
name: Erer, Hakan
name: Arıcı, Mürsel
name: Yeşilel, Okan Zafer
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Three new Cd(II) coordination polymers, [Cd(μ-dmg)(μ-bib)]n (1), {[Cd(μ-dmg)(μ-pbix)1.5]⋅H2O}n (2) and [Cd2(μ-dmg)2(μ-ptmbix)2]n (3) (H2dmg = 2,2-dimethylglutaric acid, bib = 1,4-di(1H-imidazol-1-yl)butane, pbix = 1,4-bis((1H-imidazol-1-yl)methyl)benzene and ptmbix = 1,1’-((2,3,5,6-tetramethyl-1,4-phenylene)bis(methylene)) bis(1H-imidazole)), were synthesized hydrothermally and characterized by elemental analyses, IR spectra, single-crystal and powder X-ray diffraction. Furthermore, thermal analyses (TG and DTG) of the complexes have been carried out. The single crystal X-ray diffraction analyses reveal that 1 displays a 2-D structure with sql/Shubnikov tetragonal plane net topology. Complex 2 exhibits a twofold interpenetrating 3-D + 3-D→3-D framework with bnn hexagonal BN topology while 3 isa 3-D coordination polymer with dia topology with the effect of sterically hindered auxiliary ligand.
Horst Wolfgang Böhme (Hrsg.), Burgen der Salierzeit. Teil 1: In den nördlichen Landschaften des Reiches; Teil 2: In den südlichen Landschaften des Reiches, 1991
Creators: name: Parisse, Michel
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 21, Nr. 1 (1994)
Two-dimensional Bose gases near resonance: universal three-body effects
Creators: name: Mashayekhi, Mohammad S.
name: Bernier, Jean-Sebastien
name: Borzov, Dmitry
name: Song, Jun-Liang
name: Zhou, Fei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report in this Letter the results of our investigation of 2D Bose gases beyond the dilute limit emphasizing the role played by three-body scattering events. We demonstrate that a competition between three-body attractive interactions and two-body repulsive forces results in the chemical potential of 2D Bose gases to exhibit a maximum at a critical scattering length beyond which these quantum gases possess a negative compressibility. For larger scattering lengths, the increasingly prominent role played by three-body attractive interactions leads to an onset instability at a second critical value. The three-body effects studied here are universal, fully characterized by the effective 2D scattering length $a_{2D}$ (or the size of the 2D bound states) and are, in comparison to the 3D case, independent of three-body ultraviolet physics. We find, within our approach, the ratios of the contribution to the chemical potential due to three-body interactions to the one due to two-body to be 0.27 near the maximum of the chemical potential and 0.73 in the vicinity of the onset instability.
description: 4.5 pages, 3 figures
Faddeev Random Phase Approximation applied to molecules
Creators: name: Degroote, Matthias
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This Ph.D. thesis derives the equations of the Faddeev Random Phase Approximation (FRPA) and applies the method to a set of small atoms and molecules. The occurence of RPA instabilities in the dissociation limit is addressed in molecules and by the study of the Hubbard molecule as a test system with reduced dimensionality.
description: Ph.D. thesis
Existence of affine realizations for stochastic partial differential equations driven by Lévy processes
Creators: name: Tappe, S.
Publisher: name: London : Royal Society of London
Year: 2015
Subjects: subject: Affine realization
subject: Invariant foliation
subject: Quasi-exponential volatility
subject: Stochastic partial differential equation
subject: Differential equations
subject: Stochastic programming
subject: Stochastic systems
subject: Affine realizations
subject: Invariant foliations
subject: Semilinear
subject: Partial differential equations
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: The goal of this paper is to clarify when a semilinear stochastic partial differential equation driven by Lévy processes admits an affine realization. Our results are accompanied by several examples arising in natural sciences and economics. © 2015 The Author(s) Published by the Royal Society. All rights reserved.
ACCESS-Background rate of adverse events-definition –Acute Respiratory Distress Syndrome
Creators: name: Rojo Villaescusa, M
name: Dodd, C
name: Belbachir, L
name: Martín-Pérez, M
name: García-Poza, P
name: Souverein, P
name: Sturkenboom, MCJM
Publisher: name: Zenodo
Year: 2021
Subjects: electronic health care databases, codes, AESI, vaccine, ARDS

description: This document contains the definition of Acute Respiratory Distress Syndrome and the operationalization to extract this event from different electronic health care databases in the EU, to calculate background rates of AESI The document contains the key definition, procedures and treatments, the diagnosis codes based on Codemapper output with changes/additions by data access providers, and when available published validation studies and background rates
description: This study (ACCESS project) was funded by the European Medicines Agency
Towards High-Energy Neutrino Astronomy. A Historical Review
Creators: name: Spiering, Christian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: The search for the sources of cosmic rays is a three-fold assault, using charged cosmic rays, gamma rays and neutrinos. The first conceptual ideas to detect high energy neutrinos date back to the late fifties. The long evolution towards detectors with a realistic discovery potential started in the seventies and eighties, with the pioneering works in the Pacific Ocean close to Hawaii and in Lake Baikal in Siberia. But only now, half a century after the first concepts, such a detector is in operation: IceCube at the South Pole. We do not yet know whether with IceCube we will indeed detect extraterrestrial high energy neutrinos or whether this will remain the privilege of next generation telescopes. But whatever the answer will be: the path to the present detectors was a remarkable journey. This review sketches its main milestones.
description: 52 pages, 24 figures. Historical review published in European Physics Journal H. The final publication is available at http://www.epj.org; European Physics Journal H, 2012
Order-Topological lattices
Creators: name: Erné, Marcel
Publisher: name: Cambridge : Cambridge University Press
Year: 1980
Subjects: subject: lattice
subject: Gingras
subject: Kent
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: The observation that convergence of real sequences may be defined in terms of limits inferior and limits superior as by means of neighbourhoods in the Euclidean topology leads to the question: for which lattices does order convergence coincide with convergence in the order topology? This problem has been attacked by D. C. Kent [10], A. Gingras [7] and others. We hope to present a satisfactory solution in this paper. Although there are known several characterizations of lattices, with topological order convergence (cf. Propositions 1, 2), an evaluation of these criteria already requires some knowledge of the order topology of the given lattice. In the present paper, we establish a purely lattice-theoretical description of those lattices for which order convergence is not only topological, but moreover, the lattice operations are continuous. Henceforth, such lattices will be referred to as order-topological lattices. All convergence statements will be formulated in terms of filters rather than nets. For an introduction to convergence functions, the reader may consult D. C. Kents's paper [9]. © 1980, Glasgow Mathematical Journal Trust. All rights reserved.
All linear optical devices are mode converters
Creators: name: Miller, David A. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show that every linear optical component can be completely described as a device that converts one set of orthogonal input modes, one by one, to a matching set of orthogonal output modes. This result holds for any linear optical structure with any specific variation in space and/or time of its structure. There are therefore preferred orthogonal "mode converter" basis sets of input and output functions for describing any linear optical device, in terms of which the device can be described by a simple diagonal operator. This result should help us understand what linear optical devices we can and cannot make. As illustrations, we use this approach to derive a general expression for the alignment tolerance of an efficient mode coupler and to prove that loss-less combining of orthogonal modes is impossible.
On primes not dividing binomial coefficients
Creators: name: Sander, J.W.
Publisher: name: Cambridge : Cambridge University Press
Year: 1993
Subjects: subject: binomial coefficients
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We prove that [Formula Omitted] thus dealing with open problems concerning divisors of binomial coefficients. © 1993, Cambridge Philosophical Society. All rights reserved.
Instability of N=2 gauge theory in compact space with an isospin chemical potential
Creators: name: Chunlen, Suphakorn
name: Peeters, Kasper
name: Vanichchapongjaroen, Pichet
name: Zamaklar, Marija
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate N=2 super-Yang-Mills theory on a three sphere in the presence of an isospin chemical potential at strong coupling using the AdS/CFT correspondence. This system exhibits an instability for sufficiently large values of the chemical potential. In contrast to other related models, the first excitation to condense is not a vector meson but rather a scalar charged under the global SO(4) symmetry group. Furthermore, the spectrum of fluctuations exhibits an interesting cross-over behaviour as a function of the dimensionless temperature. We construct the new ground state of the non-linear theory.
description: 29 pages
Model calculations of the ionization relaxation and radiative cooling in unsteady krypton and xenon shock waves
Creators: name: Krauss-Varban, D.
name: Demmig, F.
Publisher: name: Cambridge : Cambridge University Press
Year: 1984
Subjects: subject: Heat Transfer - Radiation
subject: Ionization
subject: Krypton - Shock Waves
subject: Shock Tubes - Radiation Effects
subject: Xenon - Shock Waves
subject: Electron Densities
subject: Line Radiation
subject: Radiation Energy Loss
subject: Gases
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The ionization relaxation and radiative cooling of weakly unsteady shock waves in krypton and xenon is examined. We find that, besides radiation energy loss, the shock-tube boundary layers and shock attenuation strongly influence the radiative-cooling region. Calculations taking these effects into account are in excellent agreement with experimental values of electron densities. The contribution of line radiation to total radiation energy loss is obtained, and amounts to about 54% at temperatures of 10000 K in krypton. For xenon, first comparisons indicate a similar result. © 1984, Cambridge University Press 1984. All rights reserved.
Effect of dexamethasone on morphine consumption after total knee arthroplasty: a statistical analysis plan for post-hoc subgroup analyses of the multicenter, randomized DEX-2-TKA trial
Creators: name: Gasbjerg, Kasper Smidt
name: Hägi-Pedersen, Daniel
name: Lunn, Troels Haxholdt
name: Olsen, Markus Harboe
name: Mathiesen, Ole
name: Jakobsen, Janus Christian
Publisher: name: Zenodo
Year: 2021
Subjects: Postoperative Pain
Dexamethasone
Total Knee Arthoplasty
Subgroup analyses

description: A statistical analysis plan for post-hoc subgroup analyses of the multicenter, randomized DEX-2-TKA trial
Arsenic(III) complexes of substituted diphenyldithiophosphate: synthesis, characterization, single crystal X-ray, DFT, and Hirshfeld surface analysis
Creators: name: Radha, Anu
name: Sharma, Deepika
name: Kumar, Pretam
name: Sood, Puneet
name: Rani, Namrata
name: Vikas
name: Pandey, Sushil Kumar
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Reaction of the triethylammonium salt of the substituted diphenyldithiophosphate ligands with AsCl3 in a 3:1 ratio results in the formation of the arsenic complexes As[S2P{OC6H4(4-C2H5)}2]3 (1), As[S2P{OC6H4(4-(CH3)3C)}2]3 (2), As[S2P{OC6H3(2,4-CH3)2}2]3 (3), As[S2P{OC6H3(2,5-CH3)2}2]3 (4), As[S2P{OC6H3(3,4-CH3)2}2]3 (5), and As[S2P{OC6H3(3,5-CH3)2}2]3 (6). The characterization of all the synthesized complexes was done by IR and multinuclear NMR (1H, 13C, and 31P) spectroscopies. Complexes 1 and 2 were structurally elucidated by single-crystal X-ray analysis. The X-ray data reveals that 1 and 2 were crystallized in triclinic crystal system with space group P−1 and monoclinic crystal system with space group C2/c, respectively. In 1 and 2, the coordination geometry around the central arsenic atom is pseudo-trigonally distorted octahedral with a lone pair of electrons positioned on one of the triangular faces of the octahedral. The central As atom in both complexes is surrounded by six sulfur atoms of the chelating anisobidentate ligands. The density functional theory computations are also carried out to further analyze the geometry and quantum chemical parameters in order to support the experimental and structural data. Finally, to estimate the effect of alkyl steric bulk in diphenyldithiophosphate complexes 1 and 2 on the intermolecular contacts contributions to the Hirshfeld surface analysis and 2-D finger-print plots analysis have been employed.
Noël Coulet, Affaires d'argent et affaires de famille en Haute Provence au XIVe siècle. Le dossier du procès de Sybille de Cabris contre Matteo Villani et la compagnie de Buonaccorsi (Archivio di Stato di Firenze, Mercanzia, 14143), 1992
Creators: name: Groebner, Valentin
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 21, Nr. 1 (1994)
The Neutral Gas Dynamics of the Nearby Magellanic Irregular Galaxy UGCA 105
Creators: name: Cannon, John M.
name: Bernstein-Cooper, Elijah Z.
name: Cave, Ian M.
name: Harris, Jon B.
name: Marshall, Melissa V.
name: Moen, Jacob M.
name: Moody, Samilee J.
name: O'Leary, Erin M.
name: Pardy, Stephen A.
name: Thomann, Clara M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present new low-resolution HI spectral line imaging, obtained with the Karl G. Jansky Very Large Array (JVLA), of the star-forming Magellanic irregular galaxy UGCA 105. This nearby (D = 3.39+/-0.25 Mpc), low mass [M_HI=(4.3+/-0.5)x10^8 Solar masses] system harbors a large neutral gas disk (HI radius ~7.2 kpc at the N_HI=10^20 cm^-2 level) that is roughly twice as large as the stellar disk at the B-band R_25 isophote. We explore the neutral gas dynamics of this system, fitting tilted ring models in order to extract a well-sampled rotation curve. The rotation velocity rises in the inner disk, flattens at 72+/-3 km/s, and remains flat to the last measured point of the disk (~7.5 kpc). The dynamical mass of UGCA 105 at this outermost point, (9+/-2)x10^9 Solar masses, is ~10 times as large as the luminous baryonic components (neutral atomic gas and stars). The proximity and favorable inclination (55 degrees) of UGCA 105 make it a promising target for high-resolution studies of both star formation and rotational dynamics in a nearby low-mass galaxy.
description: The Astronomical Journal, in press
Lateral manipulation of single adsorbates and substrate atoms with the scanning tunneling microscope
Creators: name: Meyer, G.
name: Rieder, K.H.
Publisher: name: Cambridge : Cambridge University Press
Year: 1998
Subjects: subject: Chemical bonds
subject: Copper
subject: Crystal atomic structure
subject: Nanostructured materials
subject: Substrates
subject: Surface phenomena
subject: Adsorbates
subject: Scanning tunneling microscopy
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The stability and precision of modern scanning-tunneling-microscope (STM) systems allow positioning of the tip on a subnanometer scale. This advancement has stimulated diverse efforts on surface modifications in the nanometer and even atomic range, as recently reviewed by Avouris. The lateral movement of individual adatoms and molecules in a controlled manner on solid surfaces and the construction of structures on a nanoscale were first demonstrated by Eigler and collaborators at 4 K. The reason for operating the STM at low temperatures (apart from increased stability and sensitivity of the STM setup itself) is the necessity to freeze the motion of single adsorbates, which are very often mobile at ambient temperatures. By selecting strongly bonded adsorbate/substrate combinations and large molecules, it was possible to extend the lateral manipulation technique even to room temperature. In the case of large molecules, not only their translational motion but also internal flexure of the molecule during the positioning process must be considered. In general, different physical and chemical interaction mechanisms between tip and sample can be exploited for atomic-scale manipulation. We will concentrate in the following on lateral manipulation where solely the forces that act on the adsorbate because of the proximity of the tip are used. This means that long-range van der Waals and short-range chemical forces can be used to move atoms or molecules along the surface. No bias voltage or tunneling current is necessary. Apart from this technique, additional advances using the effects caused by the electric field generated by the bias voltage between tip and sample and by the current flowing through the gap region can be used for atomic or molecular modification.
On the number of iterations required by von Neumann addition
Creators: name: Grübel, Rudolf
name: Reimers, Anke
Publisher: name: Cambridge : Cambridge University Press
Year: 2001
Subjects: subject: Carry propagation
subject: Discretization
subject: Gumbel distributions
subject: Large deviations
subject: Limit distributions
subject: Logarithmic periodicity
subject: Total variation distance
subject: Algorithms
subject: Boolean functions
subject: Iterative methods
subject: Number theory
subject: Probability distributions
subject: Random processes
subject: Theorem proving
subject: Addition algorithm
subject: Von Neumann addition
subject: Information theory
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We investigate the number of iterations needed by an addition algorithm due to Burks et al. if the input is random. Several authors have obtained results on the average case behaviour, mainly using analytic techniques based on generating functions. Here we take a more probabilistic view which leads to a limit theorem for the distribution of the random number of steps required by the algorithm and also helps to explain the limiting logarithmic periodicity as a simple discretization phenomenon.
Direct and inverse theorems of approximation theory for a generalised modulus of smoothness
Creators: name: Potapov, Mikhail K.
name: Berisha, Faton M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 41A35 (41A50, 42A16)

description: An asymmetric operator of generalised translation is introduced in this paper. Using this operator, we define a generalised modulus of smoothness and prove direct and inverse theorems of approximation theory for it.
description: 14 pages
On indices of meromorphic 1-forms
Creators: name: Ebeling, W.
name: Gusein-Zade, S.M.
Publisher: name: Cambridge : Cambridge University Press
Year: 2004
Subjects: subject: Indices
subject: Meromorphic 1-forms
subject: Singular points
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We discuss meromorphic 1-forms on compact complex manifolds and on complete intersections with isolated singularities. We give a Poincaré-Hopf type formula for them, i.e. we express the Euler characteristic in terms of singularities of a meromorphic 1-form. For that we introduce a suitable notion of an index of a germ of a meromorphic 1-form (with an additional structure) on an isolated complete intersection singularity. For a meromorphic 1-form on a complete intersection V with isolated singularities the indices of the singular points sum up to (plus-minus) the Euler characteristic of a smoothing of V. © Foundation Compositio Mathematica 2004.
Novel binuclear antimony(III) halide complexes of 5-methoxy-2-mercaptobenzimidazole: synthesis, structural characterization, and biological studies
Creators: name: Ozturk, Ibrahim Ismet
name: Yarar, Sinem
name: Gürgan, Muazzez
name: Ceyhan, Deniz
name: Panagiotou, Nikos
name: Tasiopoulos, Anastasios J.
name: Demirkesen, Seyma
name: Aral, Cenk
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: The new binuclear antimony(III) complexes corresponding to the formulas [SbCl3(µ2-S)(MtMBZIM)2]2 (1), {[SbBr2(µ2-Br)(MtMBZIM)2]2·H2O} (2) and {[SbI2(µ2-I)(MtMBZIM)2]2·H2O} (3) (MtMBZIM: 5-methoxy-2-mercaptobenzimidazole) have been synthesized and structurally characterized with regard to their melting point, elemental analysis, molar conductivity, FT-IR, and FT-Raman spectroscopic techniques, and TG-DTA analysis. The crystal structures of 1-3 have been determined by single-crystal X-ray diffraction. Compounds 1-3 are doubly bridged dimers and in each square pyramidal monomeric unit, the equatorial plane is formed by two sulfur and two halogen atoms in trans-S, trans-X arrangement. The monomeric units in 2 and 3 are linked to each other via halogen bridges, but in 1, they are linked to each other via sulfur bridges; to our knowledge, this binding type is the first example of trans-S, trans-X square pyramidal antimony(III) complexes. Newly synthesized complexes with their corresponding ligand have been tested for their in vitro cytotoxic activity against human adenocarcinoma cervix (HeLa) cells as well as for their antimicrobial activity. The influence of 1-3 on the catalytic peroxidation of the linoleic acid by the enzyme lipoxygenase (LOX) has been determined experimentally and theoretically.