cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Photophysical Properties of Hexanuclear Copper(I) and Silver(I) Clusters
Creators: name: Sabin, F.
name: Ryu, C. K.
name: Ford, P. C.
name: Vogler, Arnd
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 540 Chemie

description: The spectroscopic properties, including emission spectra and lifetimes, absorption and diffuse reflectance spectra and excitation spectra, of the hexanuclear copper(I) and silver(I) clusters Cu6(mtc)6 (1), Ag6(mtc) (2), and Ag6(dtc)6 (3) (mtc = di-n-propylmonothiocarbamate, dtc = di-n-propyldithiocarbamate) are reported. At room temperature 1 exhibits a strong single emission (e.g., in toluene λem max = 725 nm, τ = 1.0 μs) , while at 77 K each of these is a bright emitter (spectral properties: 1 in toluene, λem max = 762 nm, τ = 20 μs; 2 in toluene, λem max = 607 nm, τ = 131 μs; 3 in toluene, λem max = 550 nm, τ = 21 μs). In analogy to previous assignments in tetranuclear Cu(I) clusters, the emission bands in the octahedral (MI)6 clusters are assigned to spin-forbidden transitions from triplet excited states which are mixed d -> s and LMCT (ligand to metal charge transfer) in character modified by metal-metal interactions.
On the Origin of Species Thermodynamics and the Black Hole - Tower Correspondence
Creators: name: Herráez, Alvaro
name: Lüst, Dieter
name: Masias, Joaquin
name: Scalisi, Marco
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Species thermodynamics has been proposed in analogy to black hole thermodynamics. The entropy scales like an area and is given by the mere counting of the number of the species. In this work, we $\textit{derive}$ the constitutive relations of species thermodynamics and explain how those $\textit{originate}$ from standard thermodynamics. We consider configurations of species in thermal equilibrium inside a box of size $L$, and show that the temperature $T$ of the system, which plays a crucial role, is always upper bounded above by the species scale $Λ_{\rm sp}$. We highlight three relevant regimes: (i) when $L^{-1}< T<Λ_{\rm sp}$, and gravitational collapse is avoided, the system exhibits standard thermodynamics features, for example, with the entropy scaling like the volume of the box; (ii) in the limit $L^{-1}\simeq T\rightarrow Λ_{\rm sp}$ we recover the rules of species thermodynamics with the entropy scaling like the area of the box; (iii) an intermediate regime with $ L^{-1}\simeq T< Λ_{\rm sp}$ that avoids gravitational collapse and fulfills the Covariant Entropy Bound; this interpolates between the previous two regimes and its entropy is given simply in terms of the counting of the species contributing to the thermodynamic ensemble. This study also allows us to find a novel and independent bottom-up rationale for the Emergent String Conjecture. Finally, we present the $\textit{Black Hole - Tower Correspondence}$ as a generalization of the celebrated Black Hole - String Correspondence. This provides us with a robust framework to interpret the results of our thermodynamic investigation. Moreover, it allows us to qualitatively account for the entropy of black holes in terms of the degrees of freedom of the weakly coupled species in the tower.
description: v3: 61 pages, 5 figures; minor changes, typos corrected. Matches published version in SciPost
Pattern formation in colloidal explosions
Creators: name: Straube, Arthur V.
name: Louis, Ard A.
name: Baumgartl, Jörg
name: Bechinger, Clemens
name: Dullens, Roel P. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the non-equilibrium pattern formation that emerges when magnetically repelling colloids, trapped by optical tweezers, are abruptly released, forming colloidal explosions. For multiple colloids in a single trap we observe a pattern of expanding concentric rings. For colloids individually trapped in a line, we observe explosions with a zigzag pattern that persists even when magnetic interactions are much weaker than those that break the linear symmetry in equilibrium. Theory and computer simulations quantitatively describe these phenomena both in and out of equilibrium. An analysis of the mode spectrum allows us to accurately quantify the non-harmonic nature of the optical traps. Colloidal explosions provide a new way to generate well-characterized non-equilibrium behaviour in colloidal systems.
description: New restructured version (supplementary material goes into main text, no change of content), added journal reference and DOI information; 6 pages, 6 figures, published in Europhysics Letters (EPL)
Superhydrophobic polymeric surfaces : fabrication, wettability, and antibbacterial activity
Creators: name: Falah Toosi, Salma
Publisher: name: University of British Columbia
Year: 2017

description: This PhD thesis studies fabrication of superhydrophobic polymeric surfaces, their wetting properties, and their antibacterial activities as potential application to medical sciences. A femtosecond laser technique was used to fabricate mico/nano- structures on the surface of PTFE and PU. The effect of laser parameters (fluence, scanning speed, and overlap) on the wettability of the resulted micro/nano-patterns was studied. Two techniques were used to laser-scan the surface, namely uniaxial and biaxial scan. Uniaxial scan creates channeled morphology with direction-dependent wettability. To produce uniform wettability independent of direction, biaxial scanning was examined, which creates well-defined pillars with very high contact angle (CA) and very low contact angle hysteresis (CAH). To facilitate and speed up the surface micro/nano-structuring, laser-ablation was coupled with thermal imprinting. The metallic femtosecond laser-ablated templates were employed to imprint micron/submicron periodic structures onto the surface of several polymers. The CA of imprinted polymers increased to above 160°, while their CAH varied significantly depending on the surface thermophysical and chemical properties. A unique technique was developed to create superomniphobic patterns on HDPE through hot embossing. The filefish skin dual scale superoleophobic patterns were used as a biological model to develop angled microfiber arrays on HDPE. The obtained bioinspired surface is highly capable of repelling both water and liquids with low surface tensions that meets the superomniphobic criteria. The effect of superhydrophobicity on protein adsorption and bacterial adhesion of laser-ablated PTFE substrates were investigated. Samples were incubated in Gram negative (E.coli) and Gram positive (S.aureus) bacteria cultures, BSA solution, IgG solution, and blood plasma for 4 hours. All superhydrophobic surfaces were found to be more resistant to protein /bacteria adhesion compared to the corresponding smooth samples. However, some of the most superhydrophobic PTFE surfaces were found to exhibit the highest adherence with protein/bacteria; while some other did not allow any adsorption/adherence of protein/bacteria respectively towards the end of the incubation. Besides the CA, CAH, average height of pillars, and spacing distance between iii the pillars, this study showed that there are other roughness factors, which play crucial role in the durability of the superhydrophobic surfaces such as the distribution of pillar heights.
Photochemical reductive elimination of hexabromotellurate(IV)
Creators: name: Vogler, Arnd
name: Paukner, A.
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 540 Chemie

description: In the region between 500 nm and 300 nm the electronic spectrum of [TeBr6]2− displays absorptions which are assigned to s → p transitions. At shorter wavelengths ligand-to-metal charge transfer (LMCT) bands appear. Irradiation of [TeBr6]2− in acetonitrile led to a reductive elimination according to the equation [TeBr6]2− → [TeBr4]2− + Br2. Upon LMCT excitation (λirr = 254 nm) the quantum yield was Φ = 1.3 × 10−2 but decreased when the light was absorbed by the longer-wavelength sp bands (Φ = 0.7 × 10−3 at λirr = 436 nm).
Additional file 3 of A tool to define and measure maternal healthcare acceptability at a selected health sub-district in South Africa
Creators: name: Bucyibaruta, Joy Blaise
name: Peu, Mmapheko Doriccah
name: Bamford, Lesley
name: Musekiwa, Alfred
Publisher: name: figshare
Year: 2023
Subjects: Cell Biology
Biotechnology
Developmental Biology
Science Policy

description: Additional file 3: Table S2. Healthcare acceptability measurement tool using simple arithmetic equation.
Polygonal Structures in the Gaseous Disk: Numerical Simulations
Creators: name: Khoperskov, S. A.
name: Khoperskov, A. V.
name: Eremin, M. A.
name: Butenko, M. A.
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: The results of numerical simulations of a gaseous disk in the potential of a stellar spiral density wave are presented. The conditions under which straightened spiral arm segments (rows) form in the gas component are studied. These features of the spiral structure were identified in a series of works by A.D. Chernin with coauthors. Gas-dynamic simulations have been performed for a wide range of model parameters: the pitch angle of the spiral pattern, the amplitude of the stellar spiral density wave, the disk rotation speed, and the temperature of the gas component. The results of 2D- and 3D-disk simulations are compared. The rows in the numerical simulations are shown to be an essentially nonstationary phenomenon. A statistical analysis of the distribution of geometric parameters for spiral patterns with rows in the observed galaxies and the constructed hydrodynamic models shows good agreement. In particular, the numerical simulations and observations of galaxies give $\simeq 120^\circ$ for the average angles between straight segments.
description: 22 pages, 10 figures
The nature of the infectious agents: PrP models of resistant species to prion diseases (dog, rabbit and horses)
Creators: name: Zhang, Jiapu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biomolecules (q-bio.BM)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Prion diseases are invariably fatal and highly infectious neurodegenerative diseases affecting humans and animals. By now there have not been some effective therapeutic approaches to treat all these prion diseases. In 2008, canine mammals including dogs (canis familials) were the first time academically reported to be resistant to prion diseases (Vaccine 26: 2601--2614 (2008)). Rabbits are the mammalian species known to be resistant to infection from prion diseases from other species (Journal of Virology 77: 2003--2009 (2003)). Horses were reported to be resistant to prion diseases too (Proceedings of the National Academy of Sciences USA 107: 19808--19813 (2010)). By now all the NMR structures of dog, rabbit and horse prion proteins had been released into protein data bank respectively in 2005, 2007 and 2010 (Proceedings of the National Academy of Sciences USA 102: 640--645 (2005), Journal of Biomolecular NMR 38:181 (2007), Journal of Molecular Biology 400: 121--128 (2010)). Thus, at this moment it is very worth studying the NMR molecular structures of horse, dog and rabbit prion proteins to obtain insights into their immunity prion diseases. This article reports the findings of the molecular structural dynamics of wild-type horse, dog, and rabbit prion proteins. The dog and horse prion proteins have stable molecular structures whether under neutral or low pH environments. Rabbit prion protein has been found having stable molecular structures under neutral pH environment, but without structural stability under low pH environment. Under low pH environment, the salt bridges such as D177--R163 were broken and caused the collapse of the stable $α$-helical molecular structures.
description: This paper is an Invited and Accepted Book Chapter for "Prions and Prion Diseases: New Developments (J.M. Verdier Eds.), NOVA Publishers, 2012, ISBN 1621000273."
The influence of markets and culture on the use of native forests in the south of Chile
Creators: name: Reyes Gallardo, René Alberto
Publisher: name: University of British Columbia
Year: 2017

description: Chile´s native forests are one of the world´s 25 priority conservation ecoregions due to their high levels of endemism. These forests have been strongly disturbed by human activities in the past, which has resulted in high levels of deforestation and forest degradation. In Chile, 70% of forests are in private lands, so their fate depends on landowners´ decisions. Current knowledge about factors influencing these decisions is limited. In this research I analyzed (a) the cause-effect relationship between firewood production and deforestation/forest degradation, (b) the underlying drivers of timber extraction and livestock browsing, and their joint pressure on forests, and (c) the influence of culture on the use of forests. 315 surveys with landowners were performed in the Los Rios Region in two field campaigns, one in 2012 (pre-sampling) and the other in 2013 (sampling). I also carried out 173 economic games to measure both time and risk behaviors. I found that the decision to produce commercial firewood depends on native forest cover (%), the proportion of off-farm income (%), and an additional eight variables, which create contexts where firewood is either a permanent component of the productive system, or only a secondary activity (non-permanent). Firewood production was not found to be the primary driver of deforestation and only in some specific contexts there was evidence that it could be related to forest degradation. Moreover, livestock over-browsing has a higher impact on forests than timber extraction. While forest overharvesting is largely restricted to very specific contexts of low schooling and availability of off-farm incomes, and can present inter-annual fluctuations, forest over-browsing is a permanent structural driver. The total pressure on forests not only depends on farm size, but also on the balance between different land uses. More balanced farms show a lower pressure on forests. From a cultural standpoint, the three cultural groups that were compared show differences in terms of time and risk behaviors, which in turn influence the use of forests. Time and risk behaviors affect consumption rates (timber extraction) and investments in new tree plantations, which can replace native forests in supplying markets, preventing further degradation.
Electrical control of the exciton-biexciton splitting in a single self-assembled InGaAs quantum dots
Creators: name: Kaniber, M.
name: Huck, M. F.
name: Müller, K.
name: Clark, E. C.
name: Troiani, F.
name: Bichler, M.
name: Krenner, H. J.
name: Finley, J. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on single InGaAs quantum dots embedded in a lateral electric field device. By applying a voltage we tune the neutral exciton transition into resonance with the biexciton using the quantum confined Stark effect. The results are compared to theoretical calculations of the relative energies of exciton and biexciton. Cascaded decay from the manifold of single exciton-biexciton states has been predicted to be a new concept to generate entangled photon pairs on demand without the need to suppress the fine structures splitting of the neutral exciton.
Galactic Archaeology in the Bulge : in the era of Gaia & Large Spectroscopic Surveys
Creators: name: Chiappini, Cristina
Publisher: name: Zenodo
Year: 2019

description: The lack of large samples of high-resolution spectra of individual stars tracing large areas around the Galactic Bulge and inner-most regions of the Galaxy has been a long-standing missing information piece. This has prevented so far a clearer picture of how the Bulge/bar was formed, its connection to the thin disk inside-out grow as well as to a pristine thick disk and halo. In this review I present a summary of where we stand in our understanding of the properties of the Bulge stellar populations, with focus on chemistry and ages, and on the still open issues. I briefly summarise the different theoretical approaches that have been used to describe the Bulge assembly history underlying how the lack of better constraints have still hampers the construction of a self-consistent picture for the Bulge assembly and evolution. I then show how in the Gaia era, the combination of photometric and spectroscopic surveys will be a game change in this field, with a particular focus on APOGEE and Gaia DR2. In addition, I discuss how could we attempt to provide more robust comparisons of the bulge stellar populations with other galactic components such as the inner-thin and thick disks as well as the halo.  Once sub-populations are more robustly traced, we enter in a new phase where the abundance patterns of different chemical elements, for different galactic components, will be able not only to provide more stringent constraints to chemodynamical models, but also to much more efficiently help constraining stellar yields of the several nucleosynthetic channels. I close the review with a look into the future and discuss an opportunity not to be missed by the Galactic Archaeology community in the era of massive spectroscopic follow-up of Gaia, namely: to obtain a large number of red giant stars with seismic information using PLATO. This will provide the only direct age measurements (to the 10-20% precision level) of large samples of stars in the Bulge area, complementing what is now done for a few Bulge micro-lensed stars.
Additional file 1 of Heat-killed Lacticaseibacillus paracasei GMNL-653 ameliorates human scalp health by regulating scalp microbiome
Creators: name: Tsai, Wen-Hua
name: Fang, Yi-Ting
name: Huang, Tsuei-Yin
name: Chiang, Ying-Ju
name: Lin, Ching-Gong
name: Chang, Wen-Wei
Publisher: name: figshare
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 1: Table S1. The primer sequences of hair follicle growth factor-related genes (A) and hair follicle microbiota-related genes (B). Table S2. Correlations of the fungus or the bacteria with scalp conditions in the shampoo clinical trial. Figure S1. Heat-killed L. paracasei GMNL-653 modulates microbiota diversity in the subgroups of normal dandruff (A), high dandruff (B), normal oil (C), high oil (D), normal hair (E), and less hair (F). Start group (Start) described as the scalp in the beginning without any shampoo treatment. Control group (Ctrl) represented as the use of control shampoo without adding heat-killed GMNL-653 for 1 month. GMNL-653 group (GMNL-653) meant the use of heat-killed GMNL-653 shampoo for 1 month after using Ctrl shampoo. * p < 0.05 compared with Start group. # p < 0.05 compared with the Ctrl group. Figure S2. Hair volume is positive-correlated with accumulation of L. paracasei in human scalp after using heat-killed GMNL-653 shampoo for 2 months (A) and 4 months (B). Pearson correlation coefficient (R) and p value were calculated by SPSS statistics.
Holographic c-theorems and higher derivative gravity
Creators: name: Liu, James T.
name: Sabra, Wafic
name: Zhao, Zhichen
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In AdS/CFT, the holographic Weyl anomaly computation relates the a-anomaly coefficient to the properties of the bulk action at the UV fixed point. This universal behavior suggests the possibility of a holographic c-theorem for the a-anomaly under flows to the IR. We prove such a c-theorem for higher curvature Lovelock gravity, where the bulk equations of motion remain second order. We also explore f(R) gravity as a toy model where higher derivatives cannot be avoided. In this case, monoticity of the flow requires an additional condition related to the higher derivative nature of the theory. This is in contrast to the case of f(R) black hole entropy, where the second law follows from application of the full Einstein equations and the null energy condition.
description: 15 pages, revtex, references added
Photochemistry of Tetrasulfido Complexes of Molybdenum(VI), Tungsten(VI), Vanadium(V) and Rhenium(VII)
Creators: name: Vogler, Arnd
name: Kunkely, Horst
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: 540 Chemie

description: The tetrasulfido complexes [MoS4]2-, [WS4]2-, [VS4]3-, and [ReS4]- photolyze in solution in the presence of air according to the stoichiometry [MS4]n- + 02 -> [M02S2]n- + S2. The diatomic sulfur can be scavenged by norbornadiene or tetramerizes to yield stable S8. Quantum yields are strongly wavelength-dependent. For all complexes the reactive excited states are of the ligand to metal charge transfer type.
A Study of Optimal 4-bit Reversible Toffoli Circuits and Their Synthesis
Creators: name: Golubitsky, Oleg
name: Maslov, Dmitri
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Optimal synthesis of reversible functions is a non-trivial problem. One of the major limiting factors in computing such circuits is the sheer number of reversible functions. Even restricting synthesis to 4-bit reversible functions results in a huge search space (16! {\approx} 2^{44} functions). The output of such a search alone, counting only the space required to list Toffoli gates for every function, would require over 100 terabytes of storage. In this paper, we present two algorithms: one, that synthesizes an optimal circuit for any 4-bit reversible specification, and another that synthesizes all optimal implementations. We employ several techniques to make the problem tractable. We report results from several experiments, including synthesis of all optimal 4-bit permutations, synthesis of random 4-bit permutations, optimal synthesis of all 4-bit linear reversible circuits, synthesis of existing benchmark functions; we compose a list of the hardest permutations to synthesize, and show distribution of optimal circuits. We further illustrate that our proposed approach may be extended to accommodate physical constraints via reporting LNN-optimal reversible circuits. Our results have important implications in the design and optimization of reversible and quantum circuits, testing circuit synthesis heuristics, and performing experiments in the area of quantum information processing.
description: arXiv admin note: substantial text overlap with arXiv:1003.1914
Spectroscopic Studies of Zinc Benzenethiolate Complexes: Electron Transfer to Methyl Viologen
Creators: name: Türk, T.
name: Resch, U.
name: Fox, M. A.
name: Vogler, Arnd
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 540 Chemie

description: Mononuclear and tetranuclear zinc benzenethiolate complexes are studied by both spectroscopic and electrochemical methods. Zn(SPh)4 2- and Zn4(SPh)10 2- represent tetrahedral fragments of the cubic zinc sulfide lattice. The structured absorption spectra of the zinc benzenethiolate complexes are ascribed to intraligand transitions for the mononuclear complex and to a composite of both intraligand and ligand-tc-metal charge-transfer (LMCT) transitions for the tetranuclear species. The mononuclear complex does not emit, while the tetranuclear compound displays a short-lived metal-to-ligand charge-transfer (MLCT) emission. Photodegradation of both zinc complexes yields thianthrene, dibenzothiophene, and benzenethiol. Zn4(SPh)10 2- forms a ground-state charge-transfer complex with the dicationic electron acceptor methyl viologen in CH3CN. Excitation of the charge-transfer absorption band with a 30-ps laser pulse leads to the formation of the methyl viologen radical cation showing a lifetime of 2 +- 0.4 ni.
Tidal disruptions of separated binaries in galactic nuclei
Creators: name: Amaro-Seoane, Pau
name: Miller, M. Coleman
name: Kennedy, Gareth F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Several galaxies have exhibited X-ray flares that are consistent with the tidal disruption of a star by a central supermassive black hole. In theoretical treatments of this process it is usually assumed that the star was initially on a nearly parabolic orbit relative to the black hole. Such an assumption leads in the simplest approximation to a $t^{-5/3}$ decay of the bolometric luminosity and this is indeed consistent with the relatively poorly sampled light curves of such flares. We point out that there is another regime in which the decay would be different: if a binary is tidally separated and the star that remains close to the hole is eventually tidally disrupted from a moderate eccentricity orbit, the decay is slower, typically $\sim t^{-1.2}$. As a result, careful sampling of the light curves of such flares could distinguish between these processes and yield insight into the dynamics of binaries as well as single stars in galactic centres. We explore this process using three-body simulations and analytic treatments and discuss the consequences for present-day X-ray detections and future gravitational wave observations.
description: Accepted for publications at MNRAS
Photoredox Chemistry of Chloro Complexes of Antimony(III) and (V)
Creators: name: Vogler, Arnd
name: Paukner, A.
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 540 Chemie

description: The complex [SbCl6]3− in CHCl3 shows a phosphorescence (λmax = 520 nm, ø = 2.4 X 10−3, τ 50 ns) originating from the lowest sp excited state. Oxygen quenches this luminescence and participates in the photooxidation of Sb(III): [SbCl6]3− + O2 → [SbCl6]− + O22−. At λirr = 263 nm the quantum yield was ø = 0.081. The photoproduct [SbCl6]− in CHCl3 is light-sensitive too. Ligand to metal charge transfer excitation induces a reduction of Sb(V): [SbCl6]− + 2Cl− → [SbCl6]3− + Cl2. At λirr = 272 nm the quantum yield was ø = 0.1. The photogenerated chlorine undergoes secondary reactions.
Discovery of a significant population of CN-enhanced stars with globular cluster origin in the Milky Way bulge
Creators: name: Hong, Seungsoo
name: Lim, Dongwook
name: Lee, Young-Wook
Publisher: name: Zenodo
Year: 2019

description: Two scenarios have been suggested to explain the double red clump (RC) phenomenon observed in the Milky Way bulge. One is the X-shaped bulge model, and the other is multiple population model as is observed in globular clusters (GCs). Because these two scenarios imply very different pictures on the formation of the bulge, understanding the origin of the double RC is of crucial importance. In order to investigate the origin of the double RC, we performed low-resolution spectroscopy for stars in the two RC regimes, and measured CN, CH, and Ca band strengths. We found that the stars in the two RCs show (1) a significant (> 5.3 sigma) difference in CN strength, but (2) negligible differences in CH and Ca abundances. This chemical pattern is in contrast to that expected in the X-shaped bulge scenario, but is fully consistent with the behavior predicted in the multiple population model.
Additional file 1 of Effect of hospital assignment on mortality for AMI patients
Creators: name: Grøsland, Mari
name: Telle, Kjetil E.
name: Øien, Henning
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 60506 Virology
subject: FOS: Biological sciences
subject: Computational Biology

description: Additional file 1. Appendix.
Outer-Sphere Ligand to Ligand Charge Transfer of Metal Complexes
Creators: name: Vogler, Arnd
name: Kunkely, Horst
Publisher: name: Universität Regensburg
Year: 1986
Subjects: subject: 540 Chemie

description: The electronic spectra of the salts [NiII(tim)]2+[MII(mnt)2(t]i2m- = 2,3,9,1O-tetramethyl-l,4,8,11 -tetra-azacyclotetradeca- 1,3,8,10-tetraener H2mnt = 1,2-dicyano-l ,2-ethylenedithiolI M2+ = Ni2+, Pd2+, Pt2+) are dominated by an intense absorption band which is assigned to an outer-sphere ligand to ligand charge transfer transition from the complex anion to the cation.
Inflation driven by single geometric tachyon with D-brane orbiting around NS5-branes
Creators: name: Kwon, Pyung Seong
name: Jun, Gyeong Yun
name: Panigrahi, Kamal L.
name: Sami, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate models in which inflation is driven by a single geometrical tachyon. We assume that the D-brane as a probe brane in the background of NS5-branes has non-zero angular momentum which is shown to play similar role as the number of the scalar fields of the assisted inflation. We demonstrate that the angular momentum corrected effective potential allows to account for the observational constraint on COBE normalization, spectral index $n_S$ and the tensor to scalar ratio of perturbations consistent with WMAP seven years data.
description: 8 pages, minor clarification added, revised version to appear in PLB
Dilepton flow and deconfinement phase transition in heavy ion collisions
Creators: name: Deng, Jian
name: Wang, Qun
name: Xu, Nu
name: Zhuang, Pengfei
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The dilepton radial flow in Au+Au collisions at \sqrt{s_{NN}}=200 GeV is investigated. The space-time evolution of the fireball is described by a 2+1 dimensional ideal hydrodynamics with a variety of equations of state. The slope parameters of the transverse momentum spectra from the partonic and hadronic phases show distinct features and are sensitive to equation of state parameters. The elliptic flow and breaking of M_T scaling are also studied and have distinct features for the two phases. These features can serve as clean signals for the formation of a quark-gluon plasma in ultra-relativistic heavy ion collisions.
description: RevTex 4, 5 pages, 3 figures, to appear in PLB
Modeling of thermal stress cycling in refractory materials
Creators: name: Pandhari, Abhijit
Publisher: name: University of British Columbia
Year: 2017

description: In metallurgical reactors, the thermal stress field of refractories always changes with the heat transfer conditions at the hot-face. It is suggested that ‘thermally induced refractory cracking’ is often the primary cause of in-service refractory failure but quantitative support for this is lacking. The current work is focussed on studying this aspect by developing an experimentally validated thermomechanical model that considers refractory strength degradation under repeated thermal cycling. A thermo-mechanical model has been developed with ABAQUS to predict thermal stress and damage in a refractory specimen subjected to thermal cycling. An experiment based on the “contact-conduction method” that uses a hot/cold metal block to heat/cool a refractory specimen was carried out to validate the model. The experiments were run for up to 3-cycles starting from cold- and hot-refractory specimens. Thermocouples were used to gather temperature data from refractory and steel block. An inverse heat conduction model was developed to predict the heat flux applied to the refractory specimen by the steel block based on the temperature history from the steel block. Ultrasonic testing was carried out on the refractory specimens before and after the thermal cycling tests. The contact-conduction method was successful in creating significant thermal gradients in the refractory specimens. Thermocouples on refractory located at 1cm from the steel-refractory show temperature variation of about 500°C and 575°C for cold- and hot-refractory specimen, respectively after 3-cycles. The model was capable of predicting the temperature changes and damage in the refractory material after multiple cycles. Ultrasonic velocity tests show significant change in the sound velocities in the areas experiencing thermal cycling, indicating significant micro-cracking damage in those areas. It was seen that with multiple cycles the damage penetrated further into the specimen, however the magnitude of the damage does not increase significantly. Application to an example tundish operation indicated that the model was capable of analyzing an ideal preheating schedule and was capable of predicting the effect of idle time and multiple thermal cycles on the damage in refractories. However, to predict thermal spalling more precisely, an integrated model that considers the effect of thermal gradients, chemical reactions and mechanical loads is needed.
Additional file 1 of Australian secondary school principals’, parents’, and students’ attitudes to prescribed school footwear guidelines
Creators: name: Mazzella, Natalie
name: Fox, Aaron
name: Saunders, Natalie
name: Trowell, Danielle
name: Vicenzino, Bill
name: Bonacci, Jason
Publisher: name: figshare
Year: 2023
Subjects: Medicine
Neuroscience
Developmental Biology
Cancer
Science Policy

description: Additional file 1: Appendix 1. Survey questionnaire.
Photoredox Reaction of Cobalticinium Pentacarbonylmanganate(-I) induced by Outer-Sphere Metal to Metal Charge Transfer Excitation
Creators: name: Kunkely, Horst
name: Vogler, Arnd
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 540 Chemie

description: The salts [Co(C5H5)2]+ wavelength absorptions at [Mn(CO)5]- and [Cr(C6H6)2]+ [Mn(CO)5]- show longwavelength absorptions at λmax 740 nm and 665 nm. These bands assigned to metal to metal charge transfer (MMCT) transitions from Mn-I to CoIII and CrI. Upon MMCT excitation the former ion pair is converted to Co(C5H5)2 and Mn 2(CO)10. The latter ion pair undergoes an analogous redox reaction as a thermal process. The thermal and the light-induced electron transfer are explained on the basis of the Hush model.
Photoredox Reaction of [Cr(CO)₅I] induced by Ligand to Metal Charge Transfer Excitation
Creators: name: Kunkely, Horst
name: Vogler, Arnd
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 540 Chemie

description: The complex [CrI(CO)5I] is characterized by a long-wavelength absorption at λmax 638 nm. This band is assigned to a ligand to metal charge transfer (LMCT) transition from iodide (π) to CrI (t2g). Upon LMCT excitation the complex undergoes a photoredox reaction with a quantum yield φ 0.01 according to the equation: [CrI(CO)5I] + CH3CN → [Cr0(CO)5CH3CN] + I/2 I2. This reaction takes place also thermally.
Non-Gaussianities in the Cosmological Perturbation Spectrum due to Primordial Anisotropy
Creators: name: Dey, Anindya
name: Paban, Sonia
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate possible signatures of a pre-inflationary anisotropic phase in two-point and three-point correlation functions of the curvature perturbation for high-momentum modes which exit the horizon after isotropization. In this momentum regime, the early time dynamics admits a WKB description and the late time dynamics can be described in terms of a non-Bunch Davies vacuum state which encodes the information of initial anisotropy in the background spacetime. We compute the bi-spectrum for curvature perturbation in a canonical single-field action with and without higher derivative operators. We show that the bi-spectrum at late times, in either case, is enhanced for a flattened triangle configuration as well as a squeezed triangle configuration and compute the corresponding $f_{NL}$ parameters. The angular dependence and the particular momentum dependence of the $f_{NL}$ parameter appear as distinctive features of background anisotropy at early times.
description: 23 pages; discussion on "squeezed" triangle limit added, references updated, expanded Appendix
Invariant theory and the Heisenberg vertex algebra
Creators: name: Linshaw, Andrew R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: The invariant subalgebra H^+ of the Heisenberg vertex algebra H under its automorphism group Z/2Z was shown by Dong-Nagatomo to be a W-algebra of type W(2,4). Similarly, the rank n Heisenberg vertex algebra H(n) has the orthogonal group O(n) as its automorphism group, and we conjecture that H(n)^{O(n)} is a W-algebra of type W(2,4,6,...,n^2+3n). We prove our conjecture for n=2 and n=3, and we show that this conjecture implies that H(n)^G is strongly finitely generated for any reductive group G\subset O(n).
description: Minor corrections, final version
Photochemistry of [MCo₂(CO)₈] (M=Zn, Cd, Hg) induced by metal to metal charge transfer excitation
Creators: name: Vogler, Arnd
name: Kunkely, Horst
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: 540 Chemie

description: The electronic absorption spectra of the complexes [(OC),Co-‘M”Co-‘(CO),] with M = Zn, Cd, and Hg display an intense long-wavelength band which is assigned to the allowed Σu+ -> Σg+ transition from a non-bonding σ to an antibonding σ orbital of the Co-M-Co moiety. This transition is shifted to higher energies and gains an increasing charge transfer (CT) contribution in changing M in the order M = Hg, Cd, and Zn. In a limiting description the σn -> σ* transition can be regarded as a metal to metal (MM) CT transition from Co-I to MII. MMCT excitation induces a photoredox reaction: [(OC),Co-I-MII-Co-I(CO)4] ->MO + ]Co02(CO)8]. The quantum yields are φ = 0.45 (λirr = 333 nm) for M = Hg and φ = 0.03 ( λirr = 313 nm) for Cd.
Additional file 1 of Evaluation of Bacillus aryabhattai B8W22 peroxidase for phenol removal in waste water effluents
Creators: name: Elmetwalli, Alaa
name: Allam, Nanis G.
name: Hassan, Mervat G.
name: Albalawi, Aisha Nawaf
name: Shalaby, Azza
name: El-Said, Karim Samy
name: Salama, Afrah Fatthi
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: Additional file 1: Table S1. Morphological characterizations and Gram stain of the twenty-five bacterial isolates.
Photoluminescence of Tetranuclear Mercury(II) Complexes
Creators: name: Kunkely, Horst
name: Vogler, Arnd
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 540 Chemie

description: The complexes [Hg4(SPh)6(PPh3)4]2+ and [Hg(2-pyridylphenyl)Cl]4 show an intense low-temperature (77 K) phosphorescence at λmax=690 and 500 nm. This emission is assumed to originate from a metal-centered ds excited state which contains considerable ligand-to-metal charge transfer character.
Absorption and emission spectra of tetrameric gold(I) complexes
Creators: name: Vogler, Arnd
name: Kunkely, Horst
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: 540 Chemie

description: The lowest-energy absorption and emisson bands of the complexes [Au(dithioacetate)]4 and [Au(piperidine)Cl]4 are assigned to a metal-centered 5d-6s (A2g↔1g) transition which is modified by the metal-metal interaction in the square-planar Au(I)4 moiety.
On a Loomis-Whitney Type Inequality for Permutationally Invariant Unconditional Convex Bodies
Creators: name: Nayar, Piotr
name: Tkocz, Tomasz
Publisher: name: arXiv
Year: 2011
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 52A20 (Primary), 52A40 (Secondary)

description: For a permutationally invariant unconditional convex body K in R^n we define a finite sequence (K_j), j = 1, ..., n of projections of the body K to the space spanned by first j vectors of the standard basis of R^n. We prove that the sequence of volumes (|K_1|, ..., |K_n|) is log-concave.
description: 6 pages
CAPOS: bulge Cluster APOgee Survey
Creators: name: Geisler, Doug
Publisher: name: Zenodo
Year: 2019

description: We present the CAPOS survey, a long term project to investigate all of the known bulge globular clusters lying within the VVVX area using the APOGEE-2S high resolution multiobject spectrograph. We give the current status and some preliminary results.
Exact analytical solution of the collapse of self-gravitating Brownian particles and bacterial populations at zero temperature
Creators: name: Chavanis, Pierre-Henri
name: Sire, Clément
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We provide an exact analytical solution of the collapse dynamics of self-gravitating Brownian particles and bacterial populations at zero temperature. These systems are described by the Smoluchowski-Poisson system or Keller-Segel model in which the diffusion term is neglected. As a result, the dynamics is purely deterministic. A cold system undergoes a gravitational collapse leading to a finite time singularity: the central density increases and becomes infinite in a finite time t_coll. The evolution continues in the post collapse regime. A Dirac peak emerges, grows and finally captures all the mass in a finite time t_end, while the central density excluding the Dirac peak progressively decreases. Close to the collapse time, the pre and post collapse evolution is self-similar. Interestingly, if one starts from a parabolic density profile, one obtains an exact analytical solution that describes the whole collapse dynamics, from the initial time to the end, and accounts for non self-similar corrections that were neglected in previous works. Our results have possible application in different areas including astrophysics, chemotaxis, colloids and nanoscience.
Additional file 1 of High and low value care recommended and undertaken prior to knee or hip arthroplasty: a survey study
Creators: name: Mills, Kathryn
name: Brewster, Anne-Marie
name: Hackett, Danella
name: Cheung, Chris
name: Solomon, Michael
name: Naylor, Justine
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Supplementary Material 1
Photoluminescence of Tetrameric Silver(I) Complexes
Creators: name: Vogler, Arnd
name: Kunkely, Horst
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 540 Chemie

description: The tetrametric complexes [AgP(OCH3)3Cl]4 and [AgP(C6H5)3Cl]4 show an emission which is assigned to a metal-centered 4d-5s transition. This emission occurs at rather low energies (≈ 20800 cm−1) due to modification of the ds transition by metal-metal interaction within the tetrahedral Ag4 moiety of these clusters.
Bulges in nearby galaxies: Linking the properties of the bulge of the MW with those of external galaxies
Creators: name: Gonzalez, Oscar A.
Publisher: name: Zenodo
Year: 2019

description: Extensive observations of the highly-obscured, inner regions of the Milky Way are being used to disentangle and characterise the chemo-dynamical and morphological properties of the bulge and inner disc components. Simultaneously, state-of-the-art simulations and dedicated observations of nearby galaxies are in place to interpret the nature of the signatures seen in the Milky Way. In this talk I will present an overview of the latest studies of extragalactic bulges and how they allow us to place the properties of the bulge of the Milky Way in the general context of bulge formation and evolution.
Precise correlation and metagenomic binning uncovers fine microbial community structure
Creators: name: Durno, W. Evan
Publisher: name: University of British Columbia
Year: 2017

description: Bacteria and Archaea represent the invisible majority of living things on Earth with an estimated numerical abundance exceeding 10^30 cells. This estimate surpasses the number of grains of sand on Earth and stars in the known universe. Interdependent microbial communities drive fluxes of matter and energy underlying biogeochemical processes, and provide essential ecosystem functions and services that help create the operating conditions for life. Despite their abundance and functional imperative, the vast majority of microorganisms remain uncultivated in laboratory settings, and therefore remain extremely difficult to study. Recent advances in high-throughput sequencing are opening a multi-omic (DNA and RNA) window to the structure and function of microbial communities providing new insights into coupled biogeochemical cycling and the metabolic problem solving power of otherwise uncultivated microbial dark matter (MDM). These technological advances have created bottlenecks with respect to information processing, and innovative bioinformatics solutions are required to analyze immense biological data sets. This is particularly apparent when dealing with metagenome assembly, population genome binning, and network analysis. This work investigates combined use of single-cell amplifed genomes (SAGs) and metagenomes to more precisely construct population genome bins and evaluates the use of covariance matrix regularization methods to identify putative metabolic interdependencies at the population and community levels of organization. Applying dimensional reduction with principal components and a Gaussian mixture model to k-mer statistics from SAGs and metagenomes is shown to bin more precisely, and has been implemented as a novel pipeline, SAG Extrapolator (SAGEX). Also, correlation networks derived from small subunit ribosomal RNA gene sequences are shown to be more precisely inferred through regularization with factor analysis models applied via Gaussian copula. SAGEX and regularized correlation are applied toward 368 SAGs and 91 metagenomes, postulating populations’ metabolic capabilities via binning, and constraining interpretations via correlation. The application describes coupled biogeochemical cycling in low-oxygen waters. Use of SAGEX leverages SAGs’ deep taxonomic descriptions and metagenomes’ breadth, produces precise population genome bins, and enables metabolic reconstruction and analysis of population dynamics over time. Regularizing correlation networks overcomes a known analytic bottleneck based in precision limitations.
Optical ligand-to-ligand charge transfer of Zn(2,2'-bipyridyl)(3,4-toluenedithiolate)
Creators: name: Benedix, R.
name: Hennig, H.
name: Kunkely, Horst
name: Vogler, Arnd
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: 540 Chemie

description: The electronic structure and the optical ligand-to-ligand charge transfer (LLCT) of the pseudotetrahedral complex Zn (2,2′-bipyridyl) (3,4-toluenedithiolate) is interpreted on the basis of EHT calculations. By comparison with square-planar complexes, it is shown that the extent of electron delocalization between donor and acceptor ligand and charge separation by LLCT excitation depends on the mutual orientation of both ligands.