1,524 research outputs found
Modélisation débit-durée-fréquence appliquée à des bassins versants de grande taille du Burkina Faso = Flow-duration-frequency model applied to large basins of Burkina Faso
La l?dica como estrategia para el fortalecimiento de la psicomotricidad de los ni?os y ni?as del nivel preescolar del Colegio ?ngelo Giuseppe Roncalli de la ciudad de Ibagu?.
92 p. Recurso Electr?nicoEl presente trabajo es llevado a cabo en el Colegio Angelo Giuseppe Roncalli con los
ni?os del nivel preescolar, en los cuales se observ? que estos menores se caracterizan
por ser din?micos, participativos y expresivos frente a lo que les gusta y les disgusta;
gozan de una buena disposici?n en el momento de realizar tareas, dentro y fuera del
aula. Sin embargo, en ciertas oportunidades algunos ni?os se les dificultan la realizaci?n
de trabajos, debido a que poseen problemas relacionados con su psicomotricidad.
Por lo mencionado anteriormente se construye un proyecto implementando la
investigaci?n formativa, a trav?s de la metodolog?a cualitativa con un enfoque
etnogr?fico; para este proceso se utiliz? t?cnicas e instrumentos que permitieron la
recolecci?n de informaci?n como: fichas de observaci?n, entrevista informal, y diarios de
campo. De igual manera se tienen en cuenta los diferentes estamentos legales
nacionales, locales e institucionales.
Adem?s, se crea e implementa un proyecto pedag?gico de aula El tren l?dico como
instrumento facilitador en la estimulaci?n del proceso psicomotriz de los ni?os del nivel
preescolar, de manera que se fortalezca su aprendizaje y desenvolvimiento en su
contexto escolar; permiti?ndole a los docentes dise?ar actividades l?dico-pedag?gicas y
cambiar la visi?n que tienen sobre la educaci?n f?sica como asignatura importante en el
desarrollo integral de los ni?os.
Por ?ltimo, el desarrollo de este proceso investigativo la comunidad educativa identifico
la incidencia que tiene la psicomotricidad en el desarrollo integral de los ni?os.
Palabras claves: psicomotricidad, desarrollo integral, estrategias, estimulaci?n,
investigaci?n.The present work is carried out in the school Angelo Giuseppe Roncalli with the children
of the preschool level, in which it was observed that these minors are characterized by
being dynamic, participative and expressive in front of what they like and dislike them;
Have a good disposition when performing tasks, inside and outside the classroom.
However, in some cases, some children find it difficult to carry out work, because they
have problems related to their psychomotor skills.
For the aforementioned, a project is being implemented implementing the formative
research, through the qualitative methodology with an ethnographic approach; For this
process techniques and instruments were used that allowed the collection of information
as: observation tokens, informal interview, and field diaries. Likewise, different national,
local and institutional legal systems are taken into account.
In addition, a pedagogical project of classroom "The ludic train" is created and
implemented as a facilitating instrument in the stimulation of the psychomotor process of
the children of the pre-school level, so as to strengthen their learning and development in
their school context; Allowing teachers to design ludic-pedagogical activities and change
the vision they have on physical education as an important subject in the integral
development of children.
Finally, the development of this research process, the educational community identifies
the incidence of psychomotricity in the integral development of children.
Keywords: psychomotricity, integral development, strategies, stimulation, research
Stability analysis for the background equations for inflation with dissipation and in a viscous radiation bath
The effects of bulk viscosity are examined for inflationary dynamics in which
dissipation and thermalization are present. A complete stability analysis is
done for the background inflaton evolution equations, which includes both
inflaton dissipation and radiation bulk viscous effects. Three representative
approaches of bulk viscous irreversible thermodynamics are analyzed: the Eckart
noncausal theory, the linear and causal theory of Israel-Stewart and a more
recent nonlinear and causal bulk viscous theory. It is found that the causal
theories allow for larger bulk viscosities before encountering an instability
in comparison to the noncausal Eckart theory. It is also shown that the causal
theories tend to suppress the radiation production due to bulk viscous
pressure, because of the presence of relaxation effects implicit in these
theories. Bulk viscosity coefficients derived from quantum field theory are
applied to warm inflation model building and an analysis is made of the effects
to the duration of inflation. The treatment of bulk pressure would also be
relevant to the reheating phase after inflation in cold inflation dynamics and
during the radiation dominated regime, although very little work in both areas
has been done, the methodology developed in this paper could be extended to
apply to these other problems.Comment: 27 pages, 14 figures, Published version JCA
Clinical and Economic Evaluation after Adopting Contingent Cell-Free DNA Screening for Fetal Trisomies in South Spain.
Contingent cell-free (cf) DNA screening on the basis of the first-trimester combined test (FCT) results has emerged as a cost-effective strategy for screening of trisomy 21 (T21). Objectives: To assess performance, patientsâ uptake, and cost of contingent cfDNA screening and to compare them with those of the established FCT. Methods: This is a prospective cohort study including all singleton pregnancies attending to their FCT for screening of T21 at 2 university hospitals in South Spain. When the FCT risk was â„1:50, there were major fetal malformations, or the nuchal translucency was â„3.5 mm, women were recommended invasive testing (IT); if the risk was between 1:50 and 1:270, women were recommended cfDNA testing; and for risks bellow 1:270, no further testing was recommended. Detection rate (DR), false-positive rate (FPR), patientsâ uptake, and associated costs were evaluated. Results: We analyzed 10,541 women, including 46 T21 cases. DR of our contingent strategy was 89.1% (41/46) at 1.4% (146/10,541) FPR. Uptake of cfDNA testing was 91.2% (340/373), and overall IT rate was 2.0%. The total cost of our strategy was âŹ1,462,895.7, similar to âŹ1,446,525.7 had cfDNA testing not been available. Conclusions: Contingent cfDNA screening shows high DR, low IT rate, and high uptake at a similar cost than traditional screening.pre-print133 K
Reply: BeneïŹt of genome-wide prenatal cfDNAtesting requires further investigation through acaseâcontrol study.
post-print50,1 K
Catalytically Active Imine-based Covalent Organic Frameworks for Detoxification of Nerve Agent Simulants in Aqueous Media
A series of imine-based covalent organic frameworks decorated in their cavities with
di erent alkynyl, pyrrolidine, and N-methylpyrrolidine functional groups have been synthetized.
These materials exhibit catalytic activity in aqueous media for the hydrolytic detoxification of nerve
agents, as exemplified with nerve gas simulant diisopropylfluorophosphate (DIFP). These preliminary
results suggest imine-based covalent organic frameworks (COFs) as promising materials for
detoxification of highly toxic molecules.MINECO (MAT2016-77608-C3-1-P and 2-P, CTQ2017-84692-R)
and EU FEDER fundin
Palatini versus metric formulation in higher curvature gravity
We compare the metric and the Palatini formalism to obtain the Einstein
equations in the presence of higher-order curvature corrections that consist of
contractions of the Riemann tensor, but not of its derivatives. We find that
there is a class of theories for which the two formalisms are equivalent. This
class contains the Palatini version of Lovelock theory, but also more
Lagrangians that are not Lovelock, but respect certain symmetries. For the
general case, we find that imposing the Levi-Civita connection as an Ansatz,
the Palatini formalism is contained within the metric formalism, in the sense
that any solution of the former also appears as a solution of the latter, but
not necessarily the other way around. Finally we give the conditions the
solutions of the metric equations should satisfy in order to solve the Palatini
equations.Comment: 13 pages, latex. V2: reference added, major changes in section 3,
conclusions partially correcte
A prospective study of the clinical outcomes and prognosis associated with comorbid COPD in the atrial fibrillation population
Background: Patients with COPD are at higher risk of presenting with atrial fibrillation (AF). Information about clinical outcomes and optimal medical treatment of AF in the setting of COPD remains missing. We aimed to describe the prevalence of COPD in a sizeable cohort of real-world AF patients belonging to the same healthcare area and to examine the relationship between comorbid COPD and AF prognosis. Methods: Prospective analysis performed in a specific healthcare area. Data were obtained from several sources within the "data warehouse of the Galician Healthcare Service" using multiple analytical tools. Statistical analyses were completed using SPSS 19 and STATA 14.0. Results: A total of 7,990 (2.08%) patients with AF were registered throughout 2013 in our healthcare area (n=348,985). Mean age was 76.83+/-10.51 years and 937 (11.7%) presented with COPD. COPD patients had a higher mean CHA2DS2-VASc (4.21 vs 3.46; P=0.02) and received less beta-blocker and more digoxin therapy than those without COPD. During a mean follow-up of 707+/-103 days, 1,361 patients (17%) died. All-cause mortality was close to two fold higher in the COPD group (28.3% vs 15.5%; P<0.001). Independent predictive factors for all-cause mortality were age, heart failure, diabetes, previous thromboembolic event, dementia, COPD, and oral anticoagulation (OA). There were nonsignificant differences in thromboembolic events (1.7% vs 1.5%; P=0.7), but the rate of hemorrhagic events was significantly higher in the COPD group (3.3% vs 1.9%; P=0.004). Age, valvular AF, OA, and COPD were independent predictive factors for hemorrhagic events. In COPD patients, age, heart failure, vasculopathy, lack of OA, and lack of beta-blocker use were independent predictive factors for all-cause mortality. Conclusion: AF patients with COPD have a higher incidence of adverse events with significantly increased rates of all-cause mortality and hemorrhagic events than AF patients without COPD. However, comorbid COPD was not associated with differences in cardiovascular death or stroke rate. OA and beta-blocker treatment presented a risk reduction in mortality while digoxin use exerted a neutral effect
Is nonperturbative inflatino production during preheating a real threat to cosmology?
We discuss toy models where supersymmetry is broken due to non-vanishing
time-varying vacuum expectation value of the inflaton field during preheating.
We discuss the production of inflatino the superpartner of inflaton due to
vacuum fluctuations and then we argue that they do not survive until
nucleosynthesis and decay along with the inflaton to produce a thermal bath
after preheating. Thus the only relevant remnant is the helicity \pm 3/2
gravitinos which can genuinely cause problem to nucleosynthesis.Comment: 10 pages, Updates to match the accepted version in Phys. Rev.
Administration time effect of dietary proanthocyanidins on the metabolome of Fischer 344 rats is sex- and diet-dependent
Proanthocyanidins (PAs) are one of the most commonly ingested polyphenols in the human diet, with a wide range of beneficial health effects. Remarkably, PAs have been reported to influence core and peripheral clock genes expression, and their effects may change in a time-of-day dependent manner. Therefore, the aim of this study was to investigate whether the capacity of PAs to modulate the metabolome is conditioned by the time-of-day in which these compounds are consumed in a diet- and sexdependent manner. To do this, a grape seed proanthocyanidin extract (GSPE) was administered to female and male Fischer 344 rats at ZT0 (in the morning) and ZT12 (at night) and the GSPE administration time effect was evaluated on clock genes expression, melatonin hormone and serum metabolite levels in a healthy and obesogenic context. The results showed an administration time effect of GSPE on the metabolome in a sex and diet-dependent manner. Specifically, there was an effect on amino acid, lipid and cholate metabolite levels that correlated with the central clock genes expression. Therefore, this study shows a strong influence of sex and diet on the PAs effects on the metabolome, modulated in turn by the time-of-day
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