cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High-dispersion spectroscopic monitoring of the Be/X-ray binary A0535+26/V725 Tau I: The long-term profile variability
Creators: name: Moritani, Y.
name: Nogami, D.
name: Okazaki, A. T.
name: Imada, A.
name: Kambe, E.
name: Honda, S.
name: Hashimoto, O.
name: Ishino, Y.
name: Suzuki, Y.
name: Tanaka, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on optical high-dispersion spectroscopic monitoring observations of the Be/X-ray binary A0535+26/V725 Tau, carried out from November 2005 to March 2009. The main aim of these monitoring observations is to study spectral variabilities in the Be disc, on both the short (a week or so) and long (more than hundreds of days) timescales, by taking long-term frequent observations. Our four-year spectroscopic observations indicate that the V/R ratio, i.e., the relative intensity of the violet (V) peak to the red (R) one, of the double-peaked H-alpha line profile varies with a period of 500 days. The H-beta line profile also varies in phase with the H-alpha profile. With these observations covering two full cycles of the V/R variability, we reconstruct the 2-D structure of the Be disc by applying the Doppler tomography method to the H-alpha and H-beta emission line profiles, using a rigidly rotating frame with the V/R variability period. The resulting disc structure reveals non-axisymmetric features, which can be explained by a one-armed perturbation in the Be disc. It is the first time that an eccentric disc structure is directly detected by using a method other than the interferometric one.
description: (10 pages, 9 figures, accepted to MNRAS)
The geometric measure of multipartite entanglement and the singular values of a hypermatrix
Creators: name: Hilling, Joseph J.
name: Sudbery, Anthony
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that the geometric measure of entanglement of a pure multipartite state satisfies a polynomial equation, generalising the characteristic equation of the matrix of coefficients of a bipartite state. The equation is solved for a class of three-qubit states.
description: 18 pages. Significant correction made; our results now agree with those of Tamaryan et al
Additional file 1 of Axillo-caval extra-anatomic venous bypass creation via direct percutaneous puncture of the superior vena cava
Creators: name: Leung, Stephan  S
name: Lee, Patrick
name: Hage, Anthony N
name: Ford, Robert W
Publisher: name: figshare
Year: 2025
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Supplementary Material 1.
Structure formation as an alternative to dark energy and modified gravity
Creators: name: Rasanen, Syksy
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Observations are inconsistent with a homogeneous and isotropic universe with ordinary matter and gravity. The universe is far from exact homogeneity and isotropy at late times, and the effect of the non-linear structures has to be quantified before concluding that new physics is needed. We explain how structure formation can lead to accelerated expansion, and discuss a semi-realistic model where the timescale of the change in the expansion rate emerges from the physics of structure formation.
description: 12 pages, 4 figures, contribution to the proceedings of the July 2008 CRAL-IPNL conference "Dark Energy and Dark Matter"
A Note on Modulus-dominated SUSY-breaking
Creators: name: Maxin, James A.
name: Mayes, Van E.
name: Nanopoulos, D. V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In models where supersymmetry-breaking is dominated by the Kahler moduli and/or the universal dilaton, the B-parameter at the unification scale should be consistent with the value of tan(beta) at the electroweak scale determined by minimization of the Higgs potential triggering REWSB. We study such models employing a self-consistent determination of the B-parameter. In particular, we study the viability of a generic model, as well as M-theory and Type IIB flux compactifications with modulus-dominated supersymmetric soft-terms from the GUT scale, M_{GUT}=2x10^{16}GeV.
description: 14 pages, 2 figures
Molecular dynamics simulations of glassy polymers
Creators: name: Barrat, Jean-Louis
name: Baschnagel, Joerg
name: Lyulin, Alexei
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We review recent results from computer simulation studies of polymer glasses, from chain dynamics around the glass transition temperature Tg to the mechanical behaviour below Tg. These results clearly show that modern computer simulations are able to address and give clear answers to some important issues in the field, in spite of the obvious limitations in terms of length and time scales. In the present review we discuss the cooling rate effects, and dynamic slowing down of different relaxation processes when approaching Tg for both model and chemistry-specific polymer glasses. The impact of geometric confinement on the glass transition is discussed in detail. We also show that computer simulations are very useful tools to study structure and mechanical response of glassy polymers. The influence of large deformations on mechanical behaviour of polymer glasses in general, and strain hardening effect in particular are reviewed. Finally, we suggest some directions for future research, which we believe will be soon within the capabilities of state of the art computer simulations, and correspond to problems of fundamental interest.
description: To apear in "Soft Matter"
Some factors affecting radioiodide metabolism in the threespine stickleback Gasterosteus aculeatus Linnaeus
Creators: name: Wiggs, Alfred James
Publisher: name: University of British Columbia
Year: 2011

description: Excretion of radioiodide by Gasterosteus aculeatus has been shown to vary directly with increases in salinity and inversely with size of fish. Erroneous excretion values may be produced by an apparent laboratory diuresis which seems to vary with season and salinity. During the initial stages of sexual maturation in sea water temporary changes in excretion occur which result in an increased retention of radioiodide by the fish. These changes show a greater development at lower salinities. The demonstrated dependence of thyroid uptake upon available radioiodide make this parameter an unreliable estimate of thyroid activity. The conversion ratio, except for errors which occur under conditions where the rate of radioiodide excretion is not constant over the period of the measurements, seems to be a valid estimate of thyroid activity. Technical factors, such as the binding of inorganic radioiodide to precipitated protein, can also produce erroneous conversion ratio values. Differences in the protein binding of inorganic radioiodide suggest that changes in blood proteins occur during sexual maturation. Although a seasonal increase in thyroid activity occurs there is no correlation between this and the increase in radioiodide retention. There is therefore no reason to believe that the thyroid is responsible for the observed changes in retention of radioiodide.
Additional file 1 of Development of the pulmonary fibrosis, pulmonary vascular resistance, six minute walk distance, B-type natriuretic peptide, age (PVD-B65) risk score for patients with chronic lung disease and pulmonary hypertension
Creators: name: Gayen, Shameek
name: Pescatore, Jay
name: Bittner, Matthew
name: Naranjo, Mario
name: Criner, Gerard J.
name: Weaver, Sheila
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Supplementary Material 1.
The thermodynamic Casimir effect in the neighbourhood of the lambda-transition: A Monte Carlo study of an improved three dimensional lattice model
Creators: name: Hasenbusch, Martin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the thermodynamic Casimir effect in thin films in the three dimensional XY universality class. To this end, we simulate the improved two component phi^4 model on the simple cubic lattice. We use lattices up to the thickness L_0=33. Based on the results of our Monte Carlo simulations we compute the universal finite size scaling function theta that characterizes the behaviour of the thermodynamic Casimir force in the neighbourhood of the critical point. We confirm that leading corrections to the universal finite size scaling behaviour due to free boundary conditions can be expressed by an effective thickness L_{0,eff} = L_0+ L_s, with L_s =1.02(7). Our results are compared with experiments on films of 4He near the lambda-transition, previous Monte Carlo simulations of the XY model on the simple cubic lattice and field-theoretic results. Our result for the finite size scaling function theta is essentially consistent with the experiments on films of 4He and the previous Monte Carlo simulations.
description: 23 pages, 5 figures
New Magellan Inamori Kyocera Echelle Observations of z<1.5 sub-damped Lyman-alpha systems
Creators: name: Meiring, Joseph D.
name: Kulkarni, Varsha P.
name: Lauroesch, James T.
name: Peroux, Celine
name: Khare, Pushpa
name: York, Donald G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Damped and sub-Damped Lyman-alpha (DLA and sub-DLA) systems seen in the spectra of QSOs offer a unique way to study the interstellar medium of high redshift galaxies. In this paper we report on new abundance determinations in a sample of 10 new systems, nine of the lesser studied sub-DLAs and one DLA, along the line of sight to seven QSOs from spectra taken with the MIKE spectrograph. Lines of Mg I, Mg II, Al II, Al III, Ca II, Mn II, Fe II, and Zn II were detected. Here, we give the column densities and equivalent widths of the observed absorption lines, as well as the abundances determined for these systems. Zn, a relatively undepleted element in the local interstellar medium (ISM) is detected in one system with a high metallicity of [Zn/H]=+0.27\pm0.18. In one other system, a high abundance based on the more depleted element Fe is seen with [Fe/H]=-0.37\pm0.13, although Zn is not detected. The N(HI)-weighted mean metallicity of these sub-DLA systems based on Fe is =-0.76\pm0.11, nearly ~0.7 dex higher (a factor of 5) than what is seen in DLAs in this redshift range. The relative abundance of [Mn/Fe] is also investigated. A clear trend is visible for these systems as well as systems from the literature, with [Mn/Fe] increasing with increasing metallicity in good agreement with with Milky Way stellar abundances.
description: 19 pages, 21 figures, Fixed Typos and References, Accepted for publication in MNRAS 12/2008
Klein-Nishina steps in the energy spectrum of galactic cosmic ray electrons
Creators: name: Schlickeiser, R.
name: Ruppel, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The full Klein-Nishina cross section for the inverse Compton scattering interactions of electrons implies a significant reduction of the electron energy loss rate compared to the Thomson limit when the electron energy exceeds the critical Klein-Nishina energy E_K = gamma_K * m_e c^2 = 0.27 m_e^2 c^2/(k_BT), where T denotes the temperature of the photon graybody distribution. As a consequence the total radiative energy loss rate of single electrons exhibits sudden drops in the overall energy loss rate ~ gamma ^2 - dependence when the electron energy reaches the critical Klein-Nishina energy. The strength of the drop is proportional to the energy density of the photon radiation field. The diffuse galactic optical photon fields from stars of spectral type B and G-K lead to critical Klein-Nishina energies of 40 and 161 GeV, respectively. Associated with the drop in the loss rate are sudden increases (Klein-Nishina steps) in the equilibrium spectrum of cosmic ray electrons. Because the radiative loss rate of electrons is the main ingredient in any transport model of high-energy cosmic ray electrons, Klein-Nishina steps will modify any calculated electron equilibrium spectrum irrespective of the electron sources and spatial transport mode. To delineate most clearly the consequences of the Klein-Nishina drops in the radiative loss rate, we chose as illustrative example the simplest realistic model for cosmic ray electron dynamics in the Galaxy, consisting of the competition of radiative losses and secondary production by inelastic hadron-hadron collisions. We demonstrate that the spectral structure in the FERMI and H.E.S.S. data is well described and even the excess measured by ATIC might be explained by Klein-Nishina steps.
Equivalence between XY and dimerized models
Creators: name: Venuti, Lorenzo Campos
name: Roncaglia, Marco
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The spin-1/2 chain with XY anisotropic coupling in the plane and the XX isotropic dimerized chain are shown to be equivalent in the bulk. For finite systems we prove that the equivalence is exact in given parity sectors, after taking care of the precise boundary conditions. The proof is given constructively by finding unitary transformations that map the models onto each other. Moreover, we considerably generalized our mapping and showed that even in case of fully site dependent couplings the XY chain can be mapped onto an XX model. This result has potential application in the study of disordered systems.
Galilean Covariance and the Gravitational Field
Creators: name: Ulhoa, S. C.
name: Khanna, F. C.
name: Santana, A. E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The paper is concerned with the development of a gravitational field theory having locally a covariant version of the Galilei group. We show that this Galilean gravity can be used to study the advance of perihelion of a planet, following in parallel with the result of the (relativistic) theory of general relativity in the post-Newtonian approximation.
description: 6 pages, no figures. This paper was accepted for publication on International Journal of Modern Physics A
Structure, reactivity and electronic properties of V-doped Co clusters
Creators: name: Datta, Soumendu
name: Kabir, Mukul
name: Saha-Dasgupta, Tanusri
name: Mookerjee, Abhijit
Publisher: name: arXiv
Year: 2009
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Structures, physical and chemical properties of V doped Co$_{13}$ clusters have been studied in detail using density functional theory based first-principles method. We have found anomalous variation in stability of the doped clusters with increasing V concentration, which has been nicely demonstrated in terms of energetics and electronic properties of the clusters. Our study explains the nonmonotonic variation in reactivity of Co$_{13-m}$V$_m$ clusters towards H$_2$ molecules as reported experimentally [J. Phys. Chem. {\bf 94}, 2744 (1990)]. Moreover, it provides useful insight into the cluster geometry and chemically active sites on the cluster surface, which can help to design better catalytic processes.
description: 10 pages, 9 figures, 4 tables
Additional file 1 of Combinatorial batching of DNA for ultralow-cost detection of pathogenic variants
Creators: name: Stoltze, Ulrik Kristoffer
name: Hagen, Christian Munch
name: van Overeem Hansen, Thomas
name: Byrjalsen, Anna
name: Gerdes, Anne-Marie
name: Yakimov, Victor
name: Rasmussen, Simon
name: Bækvad-Hansen, Marie
name: Hougaard, David Michael
name: Schmiegelow, Kjeld
name: Hjalgrim, Henrik
name: Wadt, Karin
name: Bybjerg-Grauholm, Jonas
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. Containing supplementary Methods and Results, including additional figures and tables; Fig. S1-S13 and Table S1-S3.
Rotational States of Magnetic Molecules
Creators: name: Chudnovsky, E. M.
name: Garanin, D. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study a magnetic molecule that exhibits spin tunneling and is free to rotate about its anisotropy axis. Exact low-energy eigenstates of the molecule that are superpositions of spin and rotational states are obtained. We show that parameter $α= 2(\hbar S)^2/(IΔ)$ determines the ground state of the molecule. Here $\hbar S$ is the spin, $I$ is the moment of inertia, and $Δ$ is the tunnel splitting. The magnetic moment of the molecule is zero at $α< α_c = [1-1/(2S)^{2}]^{-1}$ and non-zero at $α> α_c$. At $α\to \infty$ the spin of the molecule localizes in one of the directions along the anisotropy axis.
description: 4 pages, 3 figures
title: Methodik zur datenbasierten Unterstützung der Arbeitsvorbereitung beim Anlegen neuer Produktvarianten in digitalen Assistenzsystemen
Creators: name: Bayer, Christian Peter
Publisher: name: UNSPECIFIED
Year: 2022

description: Digitale Assistenzsysteme bieten die Möglichkeit menschliche Arbeit bei Montageprozessen mit einer hohen Variantenvielfalt und umfangreichen Arbeitsinhalten zu unterstützen und so die Montagemitarbeiter zu entlasten. Für einen zielführenden Einsatz digitaler Assistenzsysteme müssen die notwendigen Montageinformationen durch die Arbeitsvorbereitung entsprechend bereitgestellt werden. Besonders das Anlegen neuer Produktvarianten in digitalen Assistenzsystemen ist mit einem steigenden Zeitaufwand verbunden, da die Anzahl einzupflegender Produktvarianten aufgrund der Individualisierung der Produkte und der kürzer werdenden Produktlebenszyklen stetig zunimmt. Daraus ergibt sich die Notwendigkeit, die Arbeitsvorbereitung beim Anlegen neuer Produktvarianten im digitalen Assistenzsystem zu unterstützen. Um diese Zeitaufwände und die daraus entstehenden Kosten in Unternehmen zu reduzieren, wird eine Methodik zur datenbasierten Unterstützung beim Anlegen neuer Produktvarianten entwickelt. So kann innerhalb der Arbeitsvorbereitung bei steigendem Arbeitsumfang eine variantenreiche Produktion in Zukunft sichergestellt werden. Konkret wird der Arbeitsvorbereitungsprozess zum Anlegen neuer Produktvarianten im digitalen Assistenzsystem anhand der Literatur und zusammen mit Experten aus der Praxis untersucht. Auf Grundlage dieses Prozesses können so Tätigkeiten identifiziert werden, die hohe Zeit- und Kostenaufwände verursachen. Ziel ist es diese Aufwände mit Hilfe einer datenbasierten Unterstützung, die aus einzelnen Unterstützungslösungen kombiniert wird, zu reduzieren. Dazu wird ein Vorgehen vorgestellt, mit dem Anwender der Methodik anhand von Anforderungen geeignete Unterstützungslösungen identifizieren. Die daraus resultierenden Unterstützungslösungen werden vor deren Umsetzung mit Hilfe einer quantitativen Nutzenbetrachtung aus zeitlicher und finanzieller Sicht bewertet. Das Ergebnis stellt transparent die optimale Kombination der Unterstützungslösungen dar, die zu einem verbesserten Arbeitsvorbereitungsprozess führen. Der Fokus der Methodik liegt auf einer einfachen und nachvollziehbaren Anwendbarkeit, auch durch unerfahrene Anwender. Eine entsprechende Unterstützung bei der Durchführung der Methodik wird durch ein Formblatt und eine entwickelte Software-Applikation bereitgestellt. Abschließend wird in der Evaluation gezeigt, dass durch eine Anwendung in einer praxisnahen Lernfabrikumgebung die an die Methodik gestellten Anforderungen erfüllt werden. Die Arbeit beschreibt somit eine auf der Grundlage eines wissenschaftlichen Forschungskonzepts entwickelte Methodik, die praxiserprobt einfach anzuwenden ist.
Physical and morphological properties of z~3 LBGs: dependence on Lyalpha line emission
Creators: name: Pentericci, L.
name: Grazian, A.
name: Scarlata, C.
name: Fontana, A.
name: Castellano, M.
name: Giallongo, E.
name: Vanzella, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the physical and morphological properties of LBGs at z ~2.5 to ~3.5, to determine if and how they depend on the nature and strength of the Lyalpha emission. We selected U-dropout galaxies from the z-detected GOODS MUSIC catalog, by adapting the classical Lyman Break criteria on the GOODS filter set. We kept only those galaxies with spectroscopic confirmation, mainly from VIMOS and FORS public observations. Using the full multi-wavelength 14-bands photometry, we determined the physical properties of the galaxies, through a standard spectral energy distribution fitting with the updated Charlot & Bruzual (2009) templates. We also added other relevant observations, i.e. the 24mu m observations from Spitzer/MIPS and the 2 MSec Chandra X-ray observations. Finally, using non parametric diagnostics (Gini, Concentration, Asymmetry, M_20 and ellipticity), we characterized the rest-frame UV morphology of the galaxies. We then analyzed how these physical and morphological properties correlate with the presence of the Lyalpha line in the optical spectra. We find that, unlike at higher redshift, the dependence of physical properties on the Lyalpha line is milder: galaxies without Lyalpha in emission tend to be more massive and dustier than the rest of the sample, but all other parameters, ages, SFRs, X-ray emission as well as UV morphology do not depend strongly on the presence of the line emission. A simple scenario where all LBGs have intrinsically high Lyalpha emission, but where dust and neutral hydrogen content (which shape the final appearance of the Lyalpha) depend on the mass of the galaxies, is able to reproduce the majority of the observed properties at z~3. Some modification might be needed to account for the observed evolution of these properties with cosmic epoch, which is also discussed.
description: Accepted for publication on A&A
Long wavelength limit of evolution of nonlinear cosmological perturbations
Creators: name: Hamazaki, Takashi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the general matter composition where the multiple scalar fields and the multiple perfect fluids coexist, in the leading order of the gradient expansion, we construct all of the solutions of the nonlinear evolutions of the locally homogeneous universe. From the momentum constraint, we derive the constraints which the solution constants of the locally homogeneous universe must satisfy. We construct the gauge invariant perturbation variables in the arbitrarily higher order nonlinear cosmological perturbation theory around the spatially flat Friedmann-Robertson-Walker universe. We construct the nonlinear long wavelength limit formula representing the long wavelength limit of the evolution of the nonlinear gauge invariant perturbation variables in terms of perturbations of the evolutions of the locally homogeneous universe. By using the long wavelength limit formula, we investigate the evolution of nonlinear cosmological perturbations in the universe dominated by the multiple slow rolling scalar fields with an arbitrary potential. The tau function and the N potential introduced in this paper make it possible to write the evolution of the multiple slow rolling scalar fields with an arbitrary interaction potential and the arbitrarily higher order nonlinear Bardeen parameter at the end of the slow rolling phase analytically. It is shown that the nonlinear parameters such as fNL and gNL are suppressed by the slow rolling expansion parameters.
Additional file 1 of Validation of the Food Safe Zone questionnaire for families of individuals with Prader-Willi syndrome
Creators: name: Dykens, Elisabeth M.
name: Roof, Elizabeth
name: Hunt-Hawkins, Hailee
name: Strong, Theresa V.
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Neuroscience
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Supplementary Material 1.
Additional file 1 of Mesenchymal stem cells from perinatal tissues promote diabetic wound healing via PI3K/AKT activation
Creators: name: Huang, Jiawei
name: Deng, Qingwen
name: Tsang, Lai Ling
name: Chang, Guozhu
name: Guo, Jinghui
name: Ruan, Ye Chun
name: Wang, Chi Chiu
name: Li, Gang
name: Chan, Hon Fai
name: Zhang, Xiaohu
name: Jiang, Xiaohua
Publisher: name: figshare
Year: 2025
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file1 (PDF 19843 kb)
Oxidative assimilation of glucose by Pseudomonas aeruginosa
Creators: name: Duncan, Margaret Grace
Publisher: name: University of British Columbia
Year: 2011

description: Manometric observations of the oxidation of glucose by washed cell suspensions of Pseudomonas aeruginosa grown on a glucose medium suggested that one-third to one-half of the substrate carbon was assimilated into cellular material. However, using uniformly-labelled glucose-C¹⁴ as the substrate it was found that during the period of rapid glucose oxidation only a small percentage of the C¹⁴ was assimilated into the cells, whereas a large quantity of ∝-ketoglutaric acid accumulated in the supernatant. A portion of the ∝-ketoglutaric acid was gradually oxidized after the disappearance of glucose, while the remainder was incorporated as ammonia became available from the breakdown of endogenous reserves. Most of the products of assimilation were nitrogenous and the addition of ammonia greatly increased the amount of C¹⁴ assimilated and prevented the accumulation of ∝-ketoglutaric acid; The cold TCA-soluble fraction and the lipid fraction appeared to be important during the early stages of assimilation, while the protein contained the largest amount of the incorporated radioactivity. The presence of azide increased the total oxygen consumption during glucose oxidation by the organism and this was accompanied by a significant decrease in the amount of radioactivity incorporated into the cells. The specific action of azide is most probably the uncoupling of oxidative phosphorylation for in the presence of high concentrations of azide there was little change in the relative amounts of the various products of assimilation, but the rate of formation was slower and the amounts synthesized were smaller. In contrast, chloramphenicol specifically inhibited the synthesis of protein while incorporation into the nucleic acid, lipid and cold TCA-soluble fractions was increased. Glucose-1-C¹⁴, glucose-2-C¹⁴ and glucose-6-C¹⁴ were also used as substrates. The results agreed with the observations of other workers that the Entner-Doudoroff and pentose phosphate pathways predominate in the oxidation of glucose by P. aeruginosa. Almost all the C-1 of glucose was eliminated as carbon dioxide and that which was incorporated was largely found in compounds such as amino acids, protein and nucleic acid which can be synthesized with the participation of carbon fixation. The C-2 of glucose was predominantly incorporated into lipid and the C-6 into nucleic acid which may be the result of the major role of the Entner-Doudoroff pathway in glucose catabolism. Carbon dioxide fixation appeared to be important in cellular synthesis and in the synthesis of ∝-ketoglutaric acid which undoubtedly arises via the tricarboxylic acid cycle. It appeared likely that the enzymes for ∝-ketoglutaric acid oxidation and transport of the compound into the cell were repressed by growth on a glucose medium. The oxidation of extracellular ∝-ketoglutaric acid by glucose-grown P. aeruginosa required protein synthesis and was prevented by the presence of chloramphenicol.
Charmed meson decays to two pseudoscalars
Creators: name: Bhattacharya, Bhubanjyoti
name: Rosner, Jonathan L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A recent update of data on the decays of $D^0$, $D^+$, and $D_s^+$ to pairs of light pseudoscalars calls for a renewed analysis of key decay amplitudes and tests of flavor symmetry. The present data change our previous understanding of relative phases between amplitudes that describe Cabibbo-favored decays of the charmed mesons. The new data also seem to favor a smaller octet-singlet mixing angle for the $η$ and $η'$ mesons when singly-Cabibbo-suppressed processes are taken into account. We also discuss the effects of the new data on interference between Cabibbo-favored and doubly-Cabibbo-suppressed decays.
description: 15 pages, 7 figures, to be submitted to Phys. Rev. D
Water Vapor: An Extraordinary Terahertz Wave Source under Optical Excitation
Creators: name: Johnson, Keith
name: Price-Gallagher, Matthew
name: Mamer, Orval
name: Lesimple, Alain
name: Fletcher, Clark
name: Chen, Yunqing
name: Lu, Xiaofei
name: Yamaguchi, Masashi
name: Zhang, X. -C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optics (physics.optics)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: In modern terahertz (THz) sensing and imaging spectroscopy, water is considered a nemesis to be avoided due to strong absorption in the THz frequency range. Here we report the first experimental demonstration and theoretical implications of using femtosecond laser pulses to generate intense broadband THz emission from water vapor. When we focused an intense laser pulse in water vapor contained in a gas cell or injected from a gas jet nozzle, an extraordinarily strong THz field from optically excited water vapor is observed. Water vapor has more than 50% greater THz generation efficiency than dry nitrogen. It had previously been assumed that the nonlinear generation of THz waves in this manner primarily involves a free-electron plasma, but we show that the molecular structure plays an essential role in the process. In particular, we found that THz wave generation from H2O vapor is significantly stronger than that from D2O vapor. Vibronic activities of water cluster ions, occurring naturally in water vapor, may possibly contribute to the observed isotope effect along with rovibrational contributions from the predominant monomers.
description: 5 pages, 4 figures
The heavily polluted atmosphere of the DAZ white dwarf GALEX J193156.8+011745
Creators: name: Vennes, S.
name: Kawka, A.
name: Nemeth, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on the discovery of a new heavily polluted white dwarf. The DAZ white dwarf GALEX J193156.8+011745 was identified in a joint GALEX/GSC survey of ultraviolet-excess objects. Optical spectra obtained at ESO NTT show strong absorption lines of magnesium and silicon and a detailed abundance analysis based on VLT-Kueyen UVES spectra reveal super-solar abundances of silicon and magnesium, and near-solar abundances of oxygen, calcium, and iron. The overall abundance pattern bears the signature of ongoing accretion onto the white dwarf atmosphere. The infrared spectral energy distribution shows an excess in the H and K bands likely associated with the accretion source.
description: Accepted for publication in MNRAS Letters
Newtonian Approach to the Matter Power Spectrum of the Generalized Chaplygin Gas
Creators: name: Fabris, J. C.
name: Goncalves, S. V. B.
name: Velten, H. E. S.
name: Zimdahl, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We model the cosmic medium as the mixture of a generalized Chaplygin gas and a pressureless matter component. Within a neo-Newtonian approach we compute the matter power spectrum. The 2dFGRS data are used to discriminate between unified models of the dark sector and different models, for which there is separate dark matter, in addition to that accounted for by the generalized Chaplygin gas. Leaving the corresponding density parameters free, we find that the unified models are strongly disfavored. On the other hand, using unified model priors, the observational data are also well described, in particular for small and large values of the generalized Chaplygin gas parameter $α$.
description: Latex file, 5 pages, 11 figures in eps format. For the proceedings of the conference Dark Energy and Dark Matter, 7-11 july 2008, Lyon, France
Additional file 1 of Using problem formulation for an efficient, fit-for-purpose risk assessment of microbial plant protection products
Creators: name: Steenbergh, Anne K.
name: Arts, Gertie
name: Bakker, Peter A. H. M.
name: de Boer, Wietse
name: Glandorf, Debora C. M.
name: ter Horst, Mechteld M. S.
name: de Jonge, Rob
name: de Kogel, Willem Jan
name: Köhl, Jürgen
Publisher: name: figshare
Year: 2025
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Supplementary Material 1. Protection goals.
Like-sign Di-lepton Signals in Higgsless Models at the LHC
Creators: name: Han, Tao
name: Liu, Hai-Shan
name: Luo, Ming-xing
name: Wang, Kai
name: Wu, Wei
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the potential LHC discovery of the Z1 KK gauge boson unitarizing longitudinal W+W- scattering amplitude. In particular, we explore the decay mode Z1->t tbar along with Z1-> W+W- without specifying the branching fractions. We propose to exploit the associated production pp-> W Z1, and select the final state of like-sign dileptons plus multijets and large missing energy. We conclude that it is possible to observe the Z1 resonance at a 5 sigma level with an integrated luminosity of 100 inverse fb at the LHC upto 650 GeV for a dominant WW channel, and 560 GeV for a dominant ttbar channel.
description: 13 pages, 7 figures
Paediatric brainstem glioma: MR Spectroscopy
Creators: name: Singh, Jitender
Publisher: name: EURORAD
Year: 2015
Subjects: subject: Neuroradiology brain
subject: MR
subject: MR-Diffusion/Perfusion
subject: MR-Spectroscopy
subject: Education
subject: eLearning
subject: Acute

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: male, 5 years
description: Clinical History: Patient presented with altered sensorium with multiple episodes of vomiting since 1 week .On ophthalmological examination of eye showed papillaedema .General examination was within normal limit . Final Diagnosis: High grade braistem (Pontine) glioma
NLRP3-directed in vitro use of antisense oligonucleotides (ASOs) in models of brain inflammation
Creators: name: Braatz, Charlotte Elisabeth
Publisher: name: Universitäts- und Landesbibliothek Bonn
Year: 2025
Subjects: subject: Alzheimer-Erkrankung
subject: Antisense-Oligonukleotide
subject: Amyloid-β
subject: Angeborene Immunität
subject: Mikroglia
subject: Neuroinflammation
subject: NLRP3-Inflammasom
subject: ddc:610

description: Die Alzheimer-Erkrankung ist die häufigste neurodegenerative Erkrankung und zugleich die am weitesten verbreitete Form der Demenz. Ein wesentliches histopathologisches Korrelat der Alzheimer-Erkrankung ist die Ablagerung von Amyloid-β (Aβ) im Gehirn. Dies wiederum setzt durch die Aktivierung des NLRP3-Inflammasoms (engl.: NOD-, LRR-, and pyrin domain-containing protein 3) neuroinflammatorische Prozesse in Gang. Insbesondere kommt es zur Aktivierung von Caspase-1 und zur anschließenden Freisetzung proinflammatorischer Zytokine wie Interleukin-1β (IL-1β) und Interleukin-18 (IL-18). Am Ende der Signalkaskade steht der progrediente neuronale Zelltod. In Mausmodellen der Alzheimer-Erkrankung konnte allerdings gezeigt werden, dass sich ein NLRP3-Knockout protektiv auf den Gedächtnisverlust auswirkt. Ziel der Studie war es, potentielle antiinflammatorische Effekte NLRP3-spezifischer Antisense-Oligonukleotide (ASO) in vitro zu evaluieren. Hierfür wurden sowohl primäre, murine Mikrogliazellen als auch makrophagenähnlich differenzierte, humane THP-1 Zellen mit selbst-designten ASOs behandelt. Im Mausmodell konnte nach einer 72-stündigen Behandlung mit einem spezifischen ASO der erfolgreiche Abbau der NLRP3 mRNA beobachtet werden. Infolgedessen waren die Konzentration von aktiver Caspase-1 sowie die extrazelluläre Freisetzung des pro-inflammatorischen Zytokins IL-1β sowohl bei Nigericin- als auch bei Aβ-abhängiger Stimulation des NLRP3-Inflammasoms signifikant reduziert. Im humanen Modell konnten nach der Behandlung mit einem NLRP3-spezifischen ASO für 48 Stunden vergleichbare Ergebnisse erzielt werden. Zudem konnte durch die ASO-Therapie eine phänotypische Polarisierung der primären murinen Mikroglia und der THP-1 Zellen hin zu einem antiinflammatorischen Zustand induziert werden. Dies spiegelte sich insbesondere im humanen Modell in einer gesteigerten Aβ-Phagozytosekapazität der THP-1 Zellen wider. Zusammenfassend legen diese Daten nahe, dass neuroinflammatorische Prozesse im Rahmen der Alzheimer-Erkrankung durch eine NLRP3-spezifische ASO-Therapie in vitro signifikant verlangsamt werden. Folglich bergen ASOs das Potential, grundlegend neue und innovative Optionen für die Behandlung NLRP3-abhängiger Erkrankungen zu eröffnen.
Formation and migration of native defects in NaAlH$_4$
Creators: name: Wilson-Short, Gareth B.
name: Janotti, Anderson
name: Hoang, Khang
name: Peles, Amra
name: Van de Walle, Chris G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a first-principles study of native defects in NaAlH$_4$. Our analysis indicates that the structure and energetics of these defects can be interpreted in terms of elementary building blocks, which include $V_{\rm{AlH_4}}^+$, $V_{\rm{Na}}^-$, $V_{\rm{H}}^+$, H$_i^-$, and (H$_2$)$_i$. We also calculate migration barriers for several key defects, in order to compare enthalpies of diffusion to experimentally measured activation energies of desorption. From this, we estimate activation energies for diffusion of defects and defect pairs. We suggest that $V_{\rm{AlH_4}}^+$ and H$_i^-$, or $V_{\rm{Na}}^-$ and $V_{\rm{H}}^+$, may be responsible for diffusion necessary for desorption. We discuss the possible role of $V_{\rm{H}}^+$-H$_i^-$ complex formation. The values we find are in the range of activation energies reported for catalyzed desorption.
description: 26 pages, 8 figures, 1 table; to appear in Phys. Rev. B 80 (2009)
Early Modern Witchcraft Trials: Are There Lessons for Sorcery Accusation-Related Violence Today?
Creators: name: Forsyth, Miranda
Publisher: name: Canberra, ACT: Dept. of Pacific Affairs, Research School of Pacific and Asian Studies, The Australian National University
Year: 2018

description: In this In Brief, the author talks about the relevance of witchcraft trials in early modern Europe to the contemporary sorcery accusation-related violence in Papua New Guinea (PNG).
Tuning the Thermal Expansion Properties of Optical Reference Cavities with Fused Silica Mirrors
Creators: name: Legero, Thomas
name: Kessler, Thomas
name: Sterr, Uwe
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the thermal expansion of low thermal noise Fabry-Perot cavities made of Low Thermal Expansion (LTE) glass spacers and Fused Silica (FS) mirrors. The different thermal expansion of mirror and spacer deforms the mirror. This deformation strongly contributes to the cavity's effective Coefficient of Thermal Expansion (CTE), decreasing the zero crossing temperature by about 20 K compared to an all-LTE glass cavity. Finite element simulations and CTE measurements show that LTE rings optically contacted to the back surface of the FS mirrors allow to tune the zero crossing temperature over a range of 30 K.
description: 7 pages, 2 tables, 6 figures
The use of role and stress concepts in the assessment of marital conflict cases : the assessment of a sample of disturbed marriages in terms of role and stress concepts
Creators: name: Regehr, Henry
Publisher: name: University of British Columbia
Year: 2011

description: The Council on Social Work Education published, in 1949, a study on the objectives of social work education. This thirteen-volume work proposed, in the section on casework method, that the concepts of "role" and "stress" be used in combination for the purpose of assessing clients' problems. Some research has already been done to bring the theory to the level of practice, but it is generally agreed that further testing is still necessary. This thesis is an attempt to make a contribution in this area by applying "role" and "stress" concepts to a sample of social work practice. Specifically, the objective is to test the usefulness of these formulations in the assessment of marital interaction. The sample group are eight cases from the files of the Adult Clinic, Mental Health Centre. Adults there are seen on referral from medical practitioners for the primary purpose of assessment and treatment of psychiatric problems, but relatives are seen where this is deemed necessary by the treatment "team". Frequently the spouse of the patient is drawn into the treatment program and marriage counseling is done when the problem in the marriage is considered to play a significant part in the etiology of the psychiatric symptoms. In this study, the reciprocal relationship of husbands and wives seen in the Clinic were examined and the case records were analyzed on the basis of the concept of "stress". The attempt was made to identify (a) the source of stress, (b) the values threatened, (c) the duration of stress, (d) the response to stress, (e) the effect of the stress on the reciprocal role relationship of husband and wife. Assessment and re-definition of the marital problem was then attempted in each case. The study brought a number of analytical features to light. (a) The use of the concept of reciprocal role functioning in a marriage made it possible to partialize the clients' total social functioning and extract the manageable units of husband and wife roles. (b) The use of stress concepts revealed a pattern of stress and response to stress that began in the early experiences of childhood and extended into the marriage relationship. (c) There was a discernable relationship between the source of stress and the development of conflict in the marriage. (d) The nature of the stress factors appeared to color the quality of the interaction between the marriage partners. (e) There appeared to be a progressive building up of stress factors in a discernable pattern. This has been only a beginning attempt at testing out the usefulness of these concepts and it would seem that further research is indicated.
Fast algorithms for min independent dominating set
Creators: name: Bourgeois, Nicolas
name: Escoffier, Bruno
name: Paschos, Vangelis Th.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Computational Complexity (cs.CC)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: We first devise a branching algorithm that computes a minimum independent dominating set on any graph with running time O*(2^0.424n) and polynomial space. This improves the O*(2^0.441n) result by (S. Gaspers and M. Liedloff, A branch-and-reduce algorithm for finding a minimum independent dominating set in graphs, Proc. WG'06). We then show that, for every r>3, it is possible to compute an r-((r-1)/r)log_2(r)-approximate solution for min independent dominating set within time O*(2^(nlog_2(r)/r)).
Studying the Sivers function by model calculations
Creators: name: Courtoy, A.
name: Scopetta, S.
name: Vento, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A formalism is presented to evaluate the Sivers function in constituent quark models. A non-relativistic reduction of the scheme is performed and applied to the Isgur-Karl model. The sign for the $u$ and $d$ flavor contributions that we obtained turns out to be opposite. The Burkardt Sum Rule is fulfilled to a large extent. After the estimate of the QCD evolution of the results from the momentum scale of the model to the experimental one, a reasonable agreement with the available data is obtained.
description: To appear in the proceedings of Diffraction 2008: International Workshop On Diffraction In High Energy Physics, 9-14 Sep 2008, La Londe-les-Maures, France. Misprints corrected, reference added
Additional file 1 of Opioid consumption frequency and its associations with potential life problems during opioid agonist treatment in individuals with prescription-type opioid use disorder: exploratory results from the OPTIMA Study
Creators: name: Bouthillier, Anne
name: Bastien, Gabriel
name: McAnulty, Christina
name: Bakouni, Hamzah
name: Le Foll, Bernard
name: Socias, M. Eugenia
name: Jutras-Aswad, Didier
Publisher: name: figshare
Year: 2025
Subjects: Medicine
Neuroscience
Pharmacology
Biotechnology
Biological Sciences not elsewhere classified
Cancer
Science Policy
Mental Health

description: Supplementary Material 1
Supergauge interactions and electroweak baryogenesis
Creators: name: Chung, Daniel J. H.
name: Garbrecht, Bjorn
name: Ramsey-Musolf, Michael. J.
name: Tulin, Sean
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a complete treatment of the diffusion processes for supersymmetric electroweak baryogenesis that characterizes transport dynamics ahead of the phase transition bubble wall within the symmetric phase. In particular, we generalize existing approaches to distinguish between chemical potentials of particles and their superpartners. This allows us to test the assumption of superequilibrium (equal chemical potentials for particles and sparticles) that has usually been made in earlier studies. We show that in the Minimal Supersymmetric Standard Model, superequilibrium is generically maintained -- even in the absence of fast supergauge interactions -- due to the presence of Yukawa interactions. We provide both analytic arguments as well as illustrative numerical examples. We also extend the latter to regions where analytical approximations are not available since down-type Yukawa couplings or supergauge interactions only incompletely equilibrate. We further comment on cases of broken superequilibrium wherein a heavy superpartner decouples from the electroweak plasma, causing a kinematic bottleneck in the chain of equilibrating reactions. Such situations may be relevant for baryogenesis within extensions of the MSSM. We also provide a compendium of inputs required to characterize the symmetric phase transport dynamics.
description: 49 pages, 9 figures