Search results for "A10"
showing 10 items of 62 documents
Effects of apomorphine on orienting reaction in the rat
2009
Aim of the research was to study the possible relationship between rapid apomorphine-induced modifications of midbrain dopaminergic neuron activity and rapid modifications of a motor response triggered by sensory stimuli (sensory-motor integration. Following apomorphine administration, ANOVA test revealed significant decrease of head turning latency and duration. A change on dopamine release, leading to an inhibition or facilitation of dopamine-mediated responses to environmental stimuli, may be hypothesized.
L'ASSURANCE DU RAPPORT DE DURABILITÉ EN ESPAGNE ET AMÉRIQUE LATINE
2015
Este trabajo presenta un estudio sobre el aseguramiento de los informes de sostenibilidad emitidos en España y Latinoamérica. Sobre una muestra de 783 empresas que envían su informe de sostenibilidad al Global Reporting Initiative, se identifican en primer lugar las características corporativas que conducen a las empresas a someter a aseguramiento dicho informe. En segundo lugar, se analiza la evolución del mercado de aseguramiento y su distribución que se evidencia dominado por firmas auditoras. En tercer lugar, se estudia el contenido del informe de aseguramiento para observar las diferentes tendencias en su confección, así como para crear un índice sobre la calidad del mismo. Las conclus…
Effects of sulpiride on the orienting movement evoked By acoustic stimulation in the Rat.
2000
Abstract Drugs that selectively block D 2 receptors are known to provoke a rapid cell firing increase followed by A9 and A10 dopaminergic (DA) neuron inactivation (depolarization block). In this study, possible relationships between cell firing rapid increase and specific behavioral effects, linked to sensorimotor integration, were investigated in the rat. To this purpose, with the aid of a video camera apparatus and a frame-by-frame analysis, effects of sulpiride-induced blockade of DA D 2 receptors were analyzed on the orienting movement of the head induced by acoustic stimulation. In a control group of rats, during trials lasting 20 min, latency and duration of head turning (HT) were 186…
Institutional factors affecting entrepreneurship: A QCA analysis
2022
A country's institutional framework plays a crucial role in promoting entrepreneurship, which drives economic growth. Encouraging a minimum level of certainty in ambiguous environments characterized by risk taking is important. Aware of this importance, we analyze the influence of institutional factors on entrepreneurship development. Specifically, we analyze political stability, government effectiveness, regulatory quality, a robust rule of law, the ease of starting a new business, and the ease of obtaining credit. We develop two models to explain the presence and absence of entrepreneurship. To do so, we apply qualitative comparative analysis (QCA) to a sample of 48 countries using data s…
Aseguramiento del informe de sostenibilidad en España y Latinoamérica
2015
Este trabajo presenta un estudio sobre el aseguramiento de los informes de sostenibilidad emitidos en España y Latinoamérica. Sobre una muestra de 783 empresas que envían su informe de sostenibilidad al Global Reporting Initiative, se identifican en primer lugar las características corporativas que conducen a las empresas a someter a aseguramiento dicho informe. En segundo lugar, se analiza la evolución del mercado de aseguramiento y su distribución que se evidencia dominado por firmas auditoras. En tercer lugar, se estudia el contenido del informe de aseguramiento para observar las diferentes tendencias en su confección, así como para crear un índice sobre la calidad del mismo. Las conclus…
X-ray Tomography of One-forms with Partial Data
2021
If the integrals of a one-form over all lines meeting a small open set vanish and the form is closed in this set, then the one-form is exact in the whole Euclidean space. We obtain a unique continuation result for the normal operator of the X-ray transform of one-forms, and this leads to one of our two proofs of the partial data result. Our proofs apply to compactly supported covector-valued distributions.
On the shape of compact hypersurfaces with almost constant mean curvature
2015
The distance of an almost constant mean curvature boundary from a finite family of disjoint tangent balls with equal radii is quantitatively controlled in terms of the oscillation of the scalar mean curvature. This result allows one to quantitatively describe the geometry of volume-constrained stationary sets in capillarity problems.
The method of moving planes: a quantitative approach
2018
We review classical results where the method of the moving planes has been used to prove symmetry properties for overdetermined PDE's boundary value problems (such as Serrin's overdetermined problem) and for rigidity problems in geometric analysis (like Alexandrov soap bubble Theorem), and we give an overview of some recent results related to quantitative studies of the method of moving planes, where quantitative approximate symmetry results are obtained.
Extending an example by Colding and Minicozzi
2018
Extending an example by Colding and Minicozzi, we construct a sequence of properly embedded minimal disks $\Sigma_i$ in an infinite Euclidean cylinder around the $x_3$-axis with curvature blow-up at a single point. The sequence converges to a non smooth and non proper minimal lamination in the cylinder. Moreover, we show that the disks $\Sigma_i$ are not properly embedded in a sequence of open subsets of $\mathbb{ R}^3$ that exhausts $\mathbb{ R}^3$.
Existence and uniqueness to several kinds of differential equations using the Coincidence Theory
2014
The purpose of this article is to study the existence of a coincidence point for two mappings defined on a nonempty set and taking values on a Banach space using the fixed point theory for nonexpansive mappings. Moreover, this type of results will be applied to obtain the existence of solutions for some classes of ordinary differential equations.