Search results for "fusion"

Isosorbide dinitrate: pharmacokinetics after intravenous administration.

1982

Isosorbide dinitrate (ISDN) is an important organic nitrate found therapeutically useful in its sublingual and oral forms in various cardiovascular diseases such as angina pectoris (1) and congestive heart failure (2). Recently Distante et al. (3) showed that an intravenous infusion of this drug, at 0.021–0.083 mg/min is also effective in managing unstable angina. The availability of an intravenous dosage form of ISDN not only affords the opportunity to characterize the pharmacokinetics of this drug after this particular mode of therapy, but also gives the possibility of assessing the bio-availability of this drug after other (e.g., oral) routes of administration in patients. This latter po…

Statistical analysis of a survey about diffusion of binge drinking and drunkorexia among students in Palermo

2018

Youth alcohol consumption is a major global public health concern. Previous reviews have concluded that exposure to alcohol marketing was associated with drinking initiation and higher alcohol consumption among youth. From January to May 2017, a survey has been conducted through administration of questionnaires about the diffusion of Binge Drinking and Drunkorexia among the students of Palermo. Test was administered, during school time, to 2331 students between the ages of 13 and 20. Regarding the analysis of the questionnaires, 97,8% of student declares to have drunk at least once: their first taste of alcoholic drink happens at the age of thirteen/fourteen. They prefer to drink at the dis…

Swing options in commodity markets: a multidimensional Lévy diffusion model

2013

Author's version of an article in the journal: Mathematical Methods of Operations Research. Also available from the publisher at: http://dx.doi.org/10.1007/s00186-013-0452-7 We study valuation of swing options on commodity markets when the commodity prices are driven by multiple factors. The factors are modeled as diffusion processes driven by a multidimensional Lévy process. We set up a valuation model in terms of a dynamic programming problem where the option can be exercised continuously in time. Here, the number of swing rights is given by a total volume constraint. We analyze some general properties of the model and study the solution by analyzing the associated HJB-equation. Furthermo…

Massive evaluation and analysis of Poincar�� recurrences on grids of initial data: a tool to map chaotic diffusion

2020

We present a novel numerical method aimed to characterize global behaviour, in particular chaotic diffusion, in dynamical systems. It is based on an analysis of the Poincar\'e recurrence statistics on massive grids of initial data or values of parameters. We concentrate on Hamiltonian systems, featuring the method separately for the cases of bounded and non-bounded phase spaces. The embodiments of the method in each of the cases are specific. We compare the performances of the proposed Poincar\'e recurrence method (PRM) and the custom Lyapunov exponent (LE) methods and show that they expose the global dynamics almost identically. However, a major advantage of the new method over the known g…

Solid-state diffusion phenomena in heterogeneous gas-solid reactions : Application to oxides sulfidation

2018

Phase transition phenomena involving the mobility of the reaction interface are involved in a wide variety of chemical reactions and applications. A good example is the sulfidation reaction experienced by the metal oxide-based materials used in the framework of gas purification or catalysts preparation applications. These reactions involve solid-state diffusion phenomena of the reactive species (atomic or ionic form) through the layer of product formed during the reaction (oxide, sulfide, or metal phase). In many cases, solid-state diffusion has a direct impact on the reaction mechanisms while determining the growth direction of the formed phases, as well as the overall kinetics of the reac…

Integral approach to the safety design of the EU-DEMO Helium-Cooled Pebble Beds with reference to the associated relevant systems

2020

FOCAL LIVER LESIONS: CONTRAST-ENHANCED ULTRASOUND

2008

Contrast-enhanced ultrasound (CEUS) represents a significant breakthrough in sonography and it is being increasingly used for evaluation of focal liver lesions (FLLs). The unique feature of CEUS of non-invasively assessing in real time liver perfusion throughout the vascular phase has led to a dramatic improvement in diagnostic accuracy of US in either detection and characterization of FLLs, as well as in the guidance and evaluation of response of therapeutic procedures. Currently, CEUS is included as a part of the suggested diagnostic work-up of FLLs, resulting in a better patient management and cost-effective therapy delivering. After a brief description of the basis of different CEUS tec…

Estrategias locales de capacitación profesional y desarrollo local: el caso de Gandia, España

2009

En los últimos años, Gandia, una ciudad media del mediterráneo español, se ha convertido en un ejemplo de crecimiento económico mientras que, al mismo tiempo, enfrenta retos importantes. Estos incluyen la llegada de un relevante flujo de inmigrantes y la necesidad de adaptar el sistema económico local y el mercado de trabajo a un entorno cada vez más competitivo. Desde 1998 el Centro de Servicios Integrales de la municipalidad (CSI-COM) ha liderado un proceso de cooperación de los agentes locales para afrontar estos desafíos. CSI-COM constituye un ejemplo de buena práctica en la mejora del funcionamiento del mercado de trabajo local. Sus principales herramientas son la formación de recursos…

Efectos de las fusiones bancarias en los resultados. El caso de las cajas rurales en España durante la primera mitad de la década de 2000

2010

ResumenDurante los últimos diez años se han producido numerosos episodios de fusiones entre cajas rurales españolas. El objetivo del trabajo es analizar el efecto que las fusiones entre cajas rurales llevadas a cabo durante la primera mitad de la década del 2000 han tenido sobre los niveles de rentabilidad, eficiencia y productividad y sobre el comportamiento estratégico de estas entidades. Para ello, se han seleccionado las fusiones realizadas durante el período considerado y se han analizado diferentes variables en comparación con la media del sector (grupo de control) para los cinco años anteriores y posteriores a la fusión. El estudio demuestra que las fusiones en las cajas rurales espa…

Efectos de las fusiones sobre la concentración y la eficiencia bancaria : el caso de las cajas rurales y los retos de la crisis financiera.

2010

En: Revista española de financiación y contabilidad. ISSN. 0210-2412. n. 146, (2010), págs. 291-321 Las crisis económicas actúan como catalizadoras de procesos de reestructuración empresarial y las fusiones son muchas veces imprescindibles para evitar quiebras. Durante el último decenio se han producido numerosos episodios de concentración entre las Cajas Rurales españolas. El objetivo del trabajo es analizar el efecto de las fusiones entre Cajas Rurales durante el decenio 1998-2007 y ante la crisis fi nanciera actual, mediante un estudio empírico consistente en analizar el Indice Herfi ndhal y la ratio de concentración discreta para medir la concentración y relacionarla con las ratios de r…