115 research outputs found

    Value Co-creation and Leadership: An Analysis Based on the Business Ecosystem Concept

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    This paper summarizes the arguments and counterarguments of the scientific discussion on multi-company co-operation leading, given that co-creating value between companies is a survival strategy for organizations by boosting competitiveness jointly several players. However, in the literature, the empirical characterization of value creation management in service companies is little explored

    Homozygous FVII deficiencies with different reactivity towards tissue thromboplastins of different origin.

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    The reagents most frequently used for FVII activity assay are obtained by rabbit brain or human placenta. In recent years, human recombinant thromboplastins have received great attention. FVII activity in FVII deficiency is usually low, regardless of the thromboplastin used. There are a few exceptions to this rule. These are represented by FVII Padua (Arg304Gln), FVII Nagoya (Arg304Trp), and FVII (Arg79Gln). In these three instances, clear discrepancies were noted in the FVII activity depending on the thromboplastin used. This indicates that at least two areas of FVII are involved in tissue binding, namely an epidermal growth factor domain of the light chain (Arg79Gln) and the catalytic domain (Arg304), controlled by exons 4 and 8, respectively. Since these three variants are cross reactive material positive, namely they are Type 2 defects, all other variants with normal antigen should be investigated by a panel of at least three tissue thromboplastins (rabbit brain, human tissue or human recombinant, and ox brain derived) in order to obtain a satisfactory classification

    Dissection of the collisional and collisionless mass components in a mini sample of CLASH and HFF massive galaxy clusters at z0.4z \approx 0.4

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    We present a multi-wavelength study of the massive (M200c1M_{200\textrm{c}} \approx 1-2×1015M2 \times 10^{15} M_\odot) galaxy clusters RXC J2248.7-4431, MACS J0416.1-2403, and MACS J1206.2-0847 at z0.4z \approx 0.4. Using the X-ray surface brightness of the clusters from deep Chandra data to model their hot gas, we are able to disentangle this mass term from the diffuse dark matter in our new strong-lensing analysis, with approximately 5050-100100 secure multiple images per cluster, effectively separating the collisional and collisionless mass components of the clusters. At a radial distance of 10%10\% of R200cR_{200\textrm{c}} (approximately 200200 kpc), we measure a projected total mass of (0.129±0.001)(0.129 \pm 0.001), (0.131±0.001)(0.131 \pm 0.001) and (0.137±0.001)×M200c(0.137 \pm 0.001)\times M_{200\textrm{c}}, for RXC J2248, MACS J0416 and MACS J1206, respectively. These values are surprisingly similar, considering the large differences in the merging configurations, and, as a consequence, in the mass models of the clusters. Interestingly, at the same radii, the hot gas over total mass fractions differ substantially, ranging from 0.082±0.0010.082 \pm 0.001 to 0.133±0.0010.133 \pm 0.001, reflecting the various dynamical states of the clusters. Moreover, we do not find a statistically significant offset between the positions of the peak of the diffuse dark matter component and of the BCG in the more complex clusters of the sample. We extend to this sample of clusters previous findings of a number of massive sub-halos higher than in numerical simulations. These results highlight the importance of a proper separation of the different mass components to study in detail the properties of dark matter in galaxy clusters.Comment: 19 pages, 11 figures, 7 tables; accepted for publication in the Astrophysical Journal; lensing models available at https://sites.google.com/site/vltclashpublic

    Discovery and first models of the quadruply lensed quasar SDSS J1433+6007

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    We report the discovery of the quadruply lensed quasar SDSS J1433+6007 (RA =14:33:22.8, Dec.=+60:07:13.44), mined in the SDSS DR12 photometric catalogues using a novel outlierselection technique, without prior spectroscopic or ultraviolet excess information. Discovery data obtained at the Nordic Optical Telescope (La Palma) show nearly identical quasar spectra at zs= 2.737 \ub1 0.003 and four quasar images in a fold configuration, one of which sits on a blue arc, with maximum separation 3.6 arcsec. The deflector redshift is zl= 0.407 \ub1 0.002, from Keck-ESI spectra. We describe the selection procedure, discovery and follow-up, image positions and BVRi magnitudes, and first results and forecasts from lens model fit to the relative image positions

    Considerações sobre o manejo do complexo afídeos / nanismo-amarelo em trigo, Independência/rs, 2018.

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    Os afídeos figuram como importantes pragas nas mais diversas culturas. Porém na cultura do trigo e demais cereais de inverno são as principais pragas causadoras de danos. Sua importância se deve pelos impactos negativos causados pelos danos diretos e indiretos. Os danos diretos dizem respeito à sucção de seiva e ao depauperamento das plantas

    Pearl Millet Breeding Lines Developed at ICRISAT: A Reservoir of Variability and Useful Source of Non-Target Traits

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    The International Crops Research Institute for the Semi- Arid Tropics (ICRISAT) conducts inter-disciplinary and partnership-based research for the genetic improvement of its mandate crops. During the 1970s and 1980s, the pearl millet improvement at ICRISAT, Patancheru, emphasized on: (i) developing a diverse range of traitspecific composites, based on the germplasm largely from the Western and Central Africa; (ii) improving them by the process of recurrent selection, principally for grain yield and downy mildew (Sclerospora graminicola (Sacc.) Schroet ) resistance; and (iii) developing open-pollinated varieties (OPVs) (Rai and Anand Kumar 1994). The improved composites, OPVs, and breeding lines derived from them, were disseminated for worldwide utilization. These germplasm, improved populations, and breeding lines were also utilized at ICRISAT, Patancheru, mostly for pedigree breeding which was aimed at developing a wide and diverse range of improved trait-specific breeding lines and hybrid parents employing higher grain yield potential and downy mildew (DM) resistance, as the main selection criteria. Limited efforts were also made to develop composites, OPVs, and breeding lines with additional resistance to smut (Tolyposporium penicillariae Bref.) and ergot (Claviceps fusiformis Loveless)
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