2,073 research outputs found

    Tempus IV: 45021-TEMPUS-2008-UK-JPCR: New Masters Programme in Library and Information Science

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    The project can show some positive and timely results. A solid core team was formed between the EU partners and the three partner countries, and the indicators of progress as outlined in the description of work were being met. Some recommendations, inter alia for an improved flow of communications, are included in this report, to maximize the sharing of knowledge and experience gained in the project. The evaluation activities as described in the proposal were to be: read minutes, reports and survey results; attend meetings; interview students, academics, and library and archive employees. These activities were undertaken in preparation of and during the visit as evidenced in appendix 1 and 2

    On a generalization of Krull domains

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    Contribution of fungi to primary biogenic aerosols in the atmosphere: wet and dry discharged spores, carbohydrates, and inorganic ions

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    Biogenic aerosols play important roles in atmospheric chemistry physics, the biosphere, climate, and public health. Here, we show that fungi which actively discharge their spores with liquids into the air, in particular actively wet spore discharging Ascomycota (AAM) and actively wet spore discharging Basidiomycota (ABM), are a major source of primary biogenic aerosol particles and components. We present the first estimates for the global average emission rates of fungal spores. Measurement results and budget calculations based on investigations in Amazonia (Balbina, Brazil, July 2001) indicate that the spores of AAM and ABM may account for a large proportion of coarse particulate matter in tropical rainforest regions during the wet season (0.7–2.3 μg m^−3). For the particle diameter range of 1–10 μm, the estimated proportions are ~25% during day-time, ~45% at night, and ~35% on average. For the sugar alcohol mannitol, the budget calculations indicate that it is suitable for use as a molecular tracer for actively wet discharged basidiospores (ABS). ABM emissions seem to account for most of the atmospheric abundance of mannitol (10–68 ng m^−3), and can explain the observed diurnal cycle (higher abundance at night). ABM emissions of hexose carbohydrates might also account for a significant proportion of glucose and fructose in air particulate matter (7–49 ng m^−3), but the literature-derived ratios are not consistent with the observed diurnal cycle (lower abundance at night). AAM emissions appear to account for a large proportion of potassium in air particulate matter over tropical rainforest regions during the wet season (17–43 ng m^−3), and they can also explain the observed diurnal cycle (higher abundance at night). The results of our investigations and budget calculations for tropical rainforest aerosols are consistent with measurements performed at other locations. Based on the average abundance of mannitol reported for extratropical continental boundary layer air (~25 ng m^−3), we have also calculated a value of ~17 Tg yr^−1 as a first estimate for the global average emission rate of ABS over land surfaces, which is consistent with the typically observed concentrations of ABS (~10³–10^4 m^−3; ~0.1–1 μg m^−3). The global average atmospheric abundance and emission rate of total fungal spores, including wet and dry discharged species, are estimated to be higher by a factor of about three, i.e. 1 μg m^−3 and ~50 Tg yr^−1. Comparisons with estimated rates of emission and formation of other major types of organic aerosol (~47 Tg yr^−1 of anthropogenic primary organic aerosol; 12–70 Tg yr^−1 of secondary organic aerosol) indicate that emissions from fungi should be taken into account as a significant global source of organic aerosol. The effects of fungal spores and related chemical components might be particularly important in tropical regions, where both physicochemical processes in the atmosphere and biological activity at the Earth's surface are particularly intense, and where the abundance of fungal spores and related chemical compounds are typically higher than in extratropical regions

    Utilizing Single Nucleotide Polymorphism Analysis in Determining Parentage of Cattle

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    Parentage identification within cattle herds is an important aspect of record keeping. It is essential for accurate registration within a purebred association and decision making for production purposes, such as replacement heifer and sire selection. Methods used to identify parentage have evolved from utilizing blood protein antigens, restriction fragment length polymorphism (RFLP) and microsatellites to the current technology of analyzing DNA profiles for differing single nucleotide polymorphisms (SNPs). In this preliminary study we analyzed genotype data from 1,066 samples obtained from various cattle breeds. These breeds included Holstein, Angus, Hereford, Irish Black, Jersey, Red Angus, Limousine, Charolais, Brown Swiss and Maine-Anjou. Samples were analyzed using parentage calling software (Cervus 3.0 and SireMatch 2.0) utilizing the 88 SNP parentage-testing panel from Fluidigm®. Of the 1,066 offspring samples submitted, 789 were verified by DNA identification to match herd records submitted by producers, indicating that 277 herd records were incorrect. Beyond parentage identification, future efforts employing SNP technology will include creating reduced SNP panels to determine the heritability of qualitative traits desirable to the beef cattle industry, such as marbling and tenderness

    The Certificates of Obligation Act of 1971, as Amended

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    Low-Energy Surface States in the Normal State of α\alpha-PdBi2 Superconductor

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    Topological superconductors as characterized by Majorana surface states has been actively searched for their significance in fundamental science and technological implication. The large spin-orbit coupling in Bi-Pd binaries has stimulated extensive investigations on the topological surface states in these superconducting compounds. Here we report a study of normal-state electronic structure in a centrosymmetric α\alpha-PdBi2 within density functional theory calculations. By investigating the electronic structure from the bulk to slab geometries in this system, we predict for the first time that α\alpha-PdBi2 can host orbital-dependent and asymmetric Rashba surface states near the Fermi energy. This study suggests that α\alpha-PdBi2 will be a good candidate to explore the relationship between superconductivity and topology in condensed matter physics

    Theory of ultrafast quasiparticle dynamics in high-temperature superconductors: Pump fluence dependence

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    We present a theory for the time-resolved optical spectroscopy of high-temperature superconductors at high excitation densities with strongly anisotropic electron-phonon coupling. A signature of the strong coupling between the out-of-plane, out-of-phase O buckling mode (B1gB_{1g}) and electronic states near the antinode is observed as a higher-energy peak in the time-resolved optical conductivity and Raman spectra, while no evidence of the strong coupling between the in-plane Cu-O breathing mode and nodal electronic states is observed. More interestingly, it is observed that under appropriate conditions of pump fluence, this signature exhibits a re-entrant behavior with time delay, following the fate of the superconducting condensate.Comment: 5 pages, 3 embedded eps figures, to appear in PR

    Foliations and Chern-Heinz inequalities

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    We extend the Chern-Heinz inequalities about mean curvature and scalar curvature of graphs of C2C^{2}-functions to leaves of transversally oriented codimension one C2C^{2}-foliations of Riemannian manifolds. That extends partially Salavessa's work on mean curvature of graphs and generalize results of Barbosa-Kenmotsu-Oshikiri \cite{barbosa-kenmotsu-Oshikiri} and Barbosa-Gomes-Silveira \cite{barbosa-gomes-silveira} about foliations of 3-dimensional Riemannian manifolds by constant mean curvature surfaces. These Chern-Heinz inequalities for foliations can be applied to prove Haymann-Makai-Osserman inequality (lower bounds of the fundamental tones of bounded open subsets ΩR2\Omega \subset \mathbb{R}^{2} in terms of its inradius) for embedded tubular neighborhoods of simple curves of Rn\mathbb{R}^{n}.Comment: This paper is an improvment of an earlier paper titled On Chern-Heinz Inequalities. 8 Pages, Late
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