115 research outputs found
Value Co-creation and Leadership: An Analysis Based on the Business Ecosystem Concept
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.
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
We present a multi-wavelength study of the massive (-) galaxy clusters RXC J2248.74431, MACS
J0416.12403, and MACS J1206.20847 at . 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 - secure multiple
images per cluster, effectively separating the collisional and collisionless
mass components of the clusters. At a radial distance of of
(approximately kpc), we measure a projected total
mass of , and , 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 to , 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
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.
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
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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