2,967 research outputs found
Editorial: Ecosystem Services and Disservices Provided by Plant-Feeding Predatory Arthropods
Editorial of the Research Topic issue on Ecosystem Services and Disservices Provided by Plant-Feeding Predatory Arthropod
Achieving provider engagement: providers' perceptions of implementing and delivering integrated care
The literature on integrated care is limited with respect to practical learning and experience. Although some attention has been paid to organizational processes and structures, not enough is paid to people, relationships, and the importance of these in bringing about integration. Little is known, for example, about provider engagement in the organizational change process, how to obtain and maintain it, and how it is demonstrated in the delivery of integrated care. Based on qualitative data from the evaluation of a large-scale integrated care initiative in London, United Kingdom, we explored the role of provider engagement in effective integration of services. Using thematic analysis, we identified an evolving engagement narrative with three distinct phases: enthusiasm, antipathy, and ambivalence, and argue that health care managers need to be aware of the impact of professional engagement to succeed in advancing the integrated care agenda
Analytical approximation of the exterior gravitational field of rotating neutron stars
It is known that B\"acklund transformations can be used to generate
stationary axisymmetric solutions of Einstein's vacuum field equations with any
number of constants. We will use this class of exact solutions to describe the
exterior vacuum region of numerically calculated neutron stars. Therefore we
study how an Ernst potential given on the rotation axis and containing an
arbitrary number of constants can be used to determine the metric everywhere.
Then we review two methods to determine those constants from a numerically
calculated solution. Finally, we compare the metric and physical properties of
our analytic solution with the numerical data and find excellent agreement even
for a small number of parameters.Comment: 9 pages, 10 figures, 3 table
Avaliação da diversidade genética do banco de germoplasma de pinhão-manso por marcadores moleculares.
bitstream/item/17901/1/BPesq_01.pd
Spontaneous Magnon Decays
A theoretical overview of the phenomenon of spontaneous magnon decays in
quantum antiferromagnets is presented. The intrinsic zero-temperature damping
of magnons in quantum spin systems is a fascinating many-body effect, which has
recently attracted significant attention in view of its possible observation in
neutron-scattering experiments. An introduction to the theory of magnon
interactions and a discussion of necessary symmetry and kinematic conditions
for spontaneous decays are provided. Various parallels with the decays of
anharmonic phonons and excitations in superfluid 4He are extensively used.
Three principal cases of spontaneous magnon decays are considered:
field-induced decays in Heisenberg antiferromagnets, zero-field decays in
spiral antiferromagnets, and triplon decays in quantum-disordered magnets.
Analytical results are compared with available numerical data and prospective
materials for experimental observation of the decay-related effects are briefly
discussed.Comment: v3.0, asymptotically close to the published versio
Integral Grothendieck-Riemann-Roch theorem
We show that, in characteristic zero, the obvious integral version of the
Grothendieck-Riemann-Roch formula obtained by clearing the denominators of the
Todd and Chern characters is true (without having to divide the Chow groups by
their torsion subgroups). The proof introduces an alternative to Grothendieck's
strategy: we use resolution of singularities and the weak factorization theorem
for birational maps.Comment: 24 page
A cautionary tale of pyridoxine toxicity in cystathionine betaâsynthase deficiency detected by twoâtier newborn screening highlights the need for clear pyridoxine dosing guidelines
Classic homocystinuria is due to deficiency of cystathionine betaâsynthase (CBS), a pyridoxineâdependent enzyme that, depending on the molecular variants, may be coâfactor responsive. Elevated methionine is often used as the primary analyte to detect CBS deficiency (CBSD) on newborn screening (NBS), but is limited by increased detection of other biochemical disorders with less clear clinical significance such as methionine aminotransferase (MAT) I/III heterozygotes. Our state has implemented a twoâtier NBS algorithm for CBSD that successfully reduced the number of MATI/III heterozygotes, yet effectively detected a mild, coâfactor responsive form of CBSD. After initial diagnosis, newborns with CBSD often undergo a pyridoxine challenge with highâdose pyridoxine to determine responsiveness. Here we describe our NBSâidentified patient with a mild form of pyridoxine responsive CBSD who developed respiratory failure and rhabdomyolysis consistent with pyridoxine toxicity during a pyridoxine challenge. This case highlights the need for weightâbased dosing and duration recommendations for pyridoxine challenge in neonates.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/163455/2/ajmga61815.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/163455/1/ajmga61815_am.pd
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