5,541 research outputs found
Evaluation of pharmaceutical counseling after hospital discharge of post-surgery patients
The aim of this study was to evaluate pharmaceutical counseling following hospital discharge.
All subjects received pharmacist counseling before discharge in a private hospital in Aracaju-SE,
Brazil, from October 2007 to February 2008. Medication adherence was measured by Haynes-Sacket and
Morisky-Green-Levine scales at the end of post-discharge treatment. Post-surgery patients (n = 243) received
counseling on the day of hospital discharge, while adherence was observed in 186 (76.5 %) of these
patients. During the four months, the increase in adherence was observed in those patients that received
the counseling: 68.7 %, 73.6 %, 82.9 % and 85.7 %, respectively. The patients were distributed according
to the variables of age, chronic illness, and duration of treatment did not significantly vary during the
study. At the end of pharmaceutical counseling period, more than three fourths of post-surgery patients
were considered adherent after hospital discharge. This result indicates a potential opportunity to implement
this service in other wards.Colegio de Farmacéuticos de la Provincia de Buenos Aire
Can the evolution of music be analyzed in a quantitative manner?
We propose a methodology to study music development by applying multivariate
statistics on composers characteristics. Seven representative composers were
considered in terms of eight main musical features. Grades were assigned to
each characteristic and their correlations were analyzed. A bootstrap method
was applied to simulate hundreds of artificial composers influenced by the
seven representatives chosen. Afterwards we quantify non-numeric relations like
dialectics, opposition and innovation. Composers differences on style and
technique were represented as geometrical distances in the feature space,
making it possible to quantify, for example, how much Bach and Stockhausen
differ from other composers or how much Beethoven influenced Brahms. In
addition, we compared the results with a prior investigation on philosophy.
Opposition, strong on philosophy, was not remarkable on music. Supporting an
observation already considered by music theorists, strong influences were
identified between composers by the quantification of dialectics, implying
inheritance and suggesting a stronger master-disciple evolution when compared
to the philosophy analysis.Comment: 8 pages, 6 figures, added references for sections 1 and 4.C, better
mathematical description on section 2. New values and interpretation, now
considering a bootstrap metho
Poly(dimethylsiloxane) as a pre-coating in layer-by-layer films containing phosphotungstate nanoclusters electrochemically sensitive toward s-triazines
One of the major advantages of the Layer-by-Layer (LbL) deposition technique is the possible control of molecular architecture, not only to achieve optimized properties but also to seek synergy among different materials. In this study, LbL films containing nanoclusters of a Keggin type polyoxometalate, phosphotungstic acid (HPW), alternated with the polycation poly(allylamine hydrochloride) (PAH) were deposited on indium-tin oxide (ITO) substrates. The electrochemical properties of the hybrid LbL film investigated in acidic conditions indicated no significant desorption of HPW, when a layer of poly(dimethylsiloxane) terminated with 3-aminopropyl groups (PDMS) was previously deposited on the ITO substrate. Such effect occurred because PDMS prevents desorption of HPW from the hybrid film, as shown by X-ray Photoelectron Spectroscopy (XPS) analyses. The porous structures of the films were revealed by Fourier transform infrared reflection absorption spectroscopy, scanning electron microscopy and XPS. PDMS/PAH as a pre-coating allowed the HPW/PAH films to be sensitive to the electrochemical detection of the triazines atrazine and melamine. In conclusion, the precise control of the LbL films architecture is important to develop opportunities for new applications. © 2014 The Royal Society of Chemistry.One of the major advantages of the Layer-by-Layer (LbL) deposition technique is the possible control of molecular architecture, not only to achieve optimized properties but also to seek synergy among different materials. 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Analysis of the dynamics of a spacecraft in the vicinity of an asteroid binary system with equal masses
In this work, we performed a dynamical analysis of a spacecraft around a
nearly equal-mass binary near-Earth asteroid with application to the asteroid
2017 YE5, which is also a possible dormant Jupiter-family comet. Thus, we
investigated the motion of a particle around this binary system using the
circular restricted three-body problem. We calculated the locations of the
Lagrangian points of the system and their Jacobi constant. Through numerical
simulations, using the Poincar\'e Surface of Sections, it was possible to find
several prograde and retrograde periodic orbits around each binary system's
primary, some exhibiting significantly-sized higher-order behavior. We also
calculated the stability of these orbits. After finding the periodic orbits, we
investigated the influence of solar radiation pressure on these orbits. For
this analysis, we considered that the area-to-mass ratio equals 0.01 and 0.1.
We also performed a spacecraft lifetime analysis considering the physical and
orbital characteristics of the 2017YE5 system and investigated the behavior of
a spacecraft in the vicinity of this system. We analyzed direct and retrograde
orbits for different values of Jacobi's constant. This study investigated
orbits that survive for at least six months, not colliding or escaping the
system during that time. We also analyze the initial conditions that cause the
spacecraft to collide with or , or escape from the system. In this
work, we take into account the gravitational forces of the binary asteroid
system and the solar radiation pressure (SRP). Finally, we calculated optimal
bi-impulsive orbital maneuvers between the collinear Lagrangian points. We
found a family of possible orbital transfers considering times of flight
between 0.1 and 1 day
The Fate of Carbon in Sediments of the Xingu and Tapajós Clearwater Rivers, Eastern Amazon
The Xingu and Tapajós rivers in the eastern Amazon are the largest clearwater systems of the Amazon basin. Both rivers have “fluvial rias” (i.e., lake-like channels) in their downstream reaches as they are naturally impounded by the Amazon mainstem. Fluvial rias are widespread in the Amazon landscape and most of the sedimentary load from the major clearwater and blackwater rivers is deposited in these channels. So far, little is known about the role of Amazon rias as a trap and reactor for organic sediments. In this study, we used organic and inorganic geochemistry, magnetic susceptibility, diatom, and pollen analyses in sediments (suspended, riverbed, and downcore) of the Xingu and Tapajós rias to investigate the effects of hydrologic variations on the carbon budget in these clearwater rivers over the Holocene. Ages of sediment deposition (~100 to 5,500 years) were constrained by optically stimulated luminescence and radiocarbon. Major elements geochemistry and concentration of total organic carbon (TOC) indicate that seasonal hydrologic variations exert a strong influence on riverine productivity and on the input and preservation of organic matter in sediments. Stable carbon isotope data (δ13C from −31.04 to −27.49‰) and pollen analysis indicate that most of the carbon buried in rias is derived from forests. In the Xingu River, diatom analysis in bottom sediments revealed 65 infrageneric taxa that are mostly well-adapted to slack oligotrophic and acidic waters. TOC values in sediment cores are similar to values measured in riverbed sediments and indicate suitable conditions for organic matter preservation in sediments of the Xingu and Tapajós rias at least since the mid-Holocene, with carbon burial rates varying from about 84 g m−2 yr−1 to 169 g m−2 yr−1. However, redox-sensitive elements in sediment core indicate alternation between anoxic/dysoxic and oxic conditions in the water-sediment interface that may be linked to abrupt changes in precipitation. The variation between anoxic/dysoxic and oxic conditions in the water-sediment interface controls organic matter mineralization and methanogenesis. Thus, such changes promoted by hydrological variations significantly affect the capacity of Amazon rias to act either as sources or sinks of carbon
A Profile Likelihood Analysis of the Constrained MSSM with Genetic Algorithms
The Constrained Minimal Supersymmetric Standard Model (CMSSM) is one of the
simplest and most widely-studied supersymmetric extensions to the standard
model of particle physics. Nevertheless, current data do not sufficiently
constrain the model parameters in a way completely independent of priors,
statistical measures and scanning techniques. We present a new technique for
scanning supersymmetric parameter spaces, optimised for frequentist profile
likelihood analyses and based on Genetic Algorithms. We apply this technique to
the CMSSM, taking into account existing collider and cosmological data in our
global fit. We compare our method to the MultiNest algorithm, an efficient
Bayesian technique, paying particular attention to the best-fit points and
implications for particle masses at the LHC and dark matter searches. Our
global best-fit point lies in the focus point region. We find many
high-likelihood points in both the stau co-annihilation and focus point
regions, including a previously neglected section of the co-annihilation region
at large m_0. We show that there are many high-likelihood points in the CMSSM
parameter space commonly missed by existing scanning techniques, especially at
high masses. This has a significant influence on the derived confidence regions
for parameters and observables, and can dramatically change the entire
statistical inference of such scans.Comment: 47 pages, 8 figures; Fig. 8, Table 7 and more discussions added to
Sec. 3.4.2 in response to referee's comments; accepted for publication in
JHE
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