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This paper presents a study of the upwelling of tropical cyclones Iván (2004) and Gustav (2008), both associated with coastal flooding in the area. The Delft3D-FLOW model was applied in order to determine its influence on the total sea surges that occurred. Graphs of sea elevation due to upwelling were obtained at La Coloma, Playa Bailen, Cabo de San Antonio, Playa Bibijagua and Carapachibey. In the absence of measured data, it was validated by comparing the results with previous studies and modeling in another area, with the presence of sea level measurement stations, but applying the same methodology. Finally, it was concluded that the application of the model under the methodology used correctly described the phenomenon. [ABSTRACT FROM AUTHOR]

The simulation of a phenomenon in a free circulation regime requires study and practice time. In the present work, recommendations are provided for the creation of models in the ANSYS Fluent software in a fast and precise way, from the evaluation of different configurations, taking as a work to model the single-cycle labyrinth weirs. The objective is to facilitate the habitual use in personal computers of this tool for its application in engineering projects. [ABSTRACT FROM AUTHOR]

This paper presents a brief look at the evolution of university libraries and a change to a new library model named "Learning and Research Resource Center - CRAI (in Spanish, Centro de Recursos para el Aprendizaje y la Investigación"). Here, the paper shows the results obtained on a diagnosis conducted in Universidad de la Havana's library network ( in Spanish, Red de Bibliotecas de la Universidad de La Habana); we propose a series of strategic lines to work and actions to transform this network into a CRAI, and finally, the paper proposes a CRAI model for Universidad de La Habana. [ABSTRACT FROM AUTHOR]

The strip of Pand north of heavy crude oil represents the main source of Cuban hydrocarbons. About the reservoirs several thickness of clayey sediments are reported. Such sequences of these rocks characterize the base of Vega Alta formation providing a sealing character. Recently scanning electron microscopy with X ray microanalysis have been used as part of a methodology of analysis, developed for clayey seal rock characterization in thouse strip of land. This methodology consisted on the integration of the morphological and chemical information. These techniques were applied to drilling cores and outcrop samples. The results of the analysis allowed to get information about the nature of the seal rocks, which is important aspect to take into account for the hydrocarbon exploration. With the application of these techniques, clays belonging to the complex mixture illite, smectite were determined. The spectra obtained by x-ray fluorescence, corresponding to clayey rocks. The chemical composition evidence the nature of these rocks, where the major elements are silicon, aluminum, calcium and magnesium. These studies allowed a better characterization of the oil seal, and allowed more detailed studies, not only in the strip of land north and also in other areas, aspect which is the main objective of the present research. [ABSTRACT FROM AUTHOR]

The north fringe of heavy crude represents the main source of Cuban hydrocarbons. Gas and oil seals of Cuban Northern Province are represented by a series of orogenic formations consisting mainly of terrigenous rocks with clay components. For seal quality evaluation of these formations, petrography and mineralogical characterization are essential. The primary sealing elements of Cuban northern province are clays, which are defined as the fundamental object of this research. They are distinguished by having a lower crystallinity than carbonates, effect that is caused by crystal imperfections: crystallite size, structural disorder and stress, while carbonates have a chemical composition that includes a smaller number of chemicals that showing clays. For this characterisation it was applied the infrared spectroscopy and x ray diffraction techniques. For this purpose samples were taken from clays and carbonate rocks of drill cores and geological outcrops. The application of these techniques allowed the determination of the composition of the rocks, characterized by the complex mixture of: illite, smectite, chlorite and hydromica (hydromuscovite) accompanied by their respective interlayereds. [ABSTRACT FROM AUTHOR]

The oil reservoirs in the Northern Heavy Oil Province of Cuba are characterized by the presence of unstable clay formations when they come in contact with water based drilling fluids. Such a phenomenon leads to undesirable events that hinder the advance of the drilling process. The clay mineral hydration constitutes the main cause which determines the increase of its original volume and its dispersion in the drilling fluid. The selection of a fluid which minimize such conditions represent a challenge for science and technology. This paper shows the results achieved in studies performed in order to select a suitable fluid formulation, using sodium silicate as an additive. Other conventional additives and formulations were tested with montmorillonitic clay samples and other clays characteristic of Vega Alta geological formation that constitutes the reservoirs seal of the northern gas - oil province of Cuba. The results obtained from swelling and dispersion test, rheological analysis and fluid composition allowed the selection of a suitable fluid formulation for a successful well drilling in a located in an area with unstable clay formations. [ABSTRACT FROM AUTHOR]

An overview of the conceptual and functional evolution of the University Library since its inception, when the conservation of books was its most important task, until nowadays, when it is characterized by the rise of resource centers for learning and research. Some comments about the development, related services and current challenges of the latter are provided, as well as some considerations about the need for a CRAI model at the Cuban university. [ABSTRACT FROM AUTHOR]

In Cuba, due to the need to measure the flows that circulate through small and large diameter conductors and given the momentary impossibility of acquiring high-tech solutions in international markets, these solutions have begun to be implemented as a provisional alternative variant to carry out these measurements. This paper is a summary of the main aspects that must be kept in mind when undertaking the design and construction of a proportional flowmeter, emphasizing the potentialities and weaknesses of each of the solutions that can be implemented for such purposes. [ABSTRACT FROM AUTHOR]

El artículo presenta un reporte de caso de un paciente con pie diabético que recibió tratamiento por el Hospital Docente Clínico-Quirúrgico de La Habana, Cuba. Se describe la apariencia de la lesión, la administración de la droga Heberprot-P, y la curación exitosa que se logró. También se proveen fotografías de la evolución de la lesión.