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In the last decade important results have been achieved with the usage of geostatistical methods for the solution of geologic and mining problems, particularly in the estimate process of resources in Cuban lateritic deposits. Their uses imply on the one hand, to master fundamental concepts such as: the semivariogram calculation and adjustment, the kriging estimate and the geostatistical simulation, on the other hand, it is necessary to carry out a suitable processing interpretation in each moment, which depends on the experience of specialists on the subject. In this paper, some comments are presented on the article Geostatistical models of the nickel concentration in the domain 7 of Punta Gorda deposit with regard to the geostatistical simulation. [ABSTRACT FROM AUTHOR]

The potentialities of the educational units as medium of university extension, as material vehicle of promotion of culture, in their more wide meaning, it is the referring that defends this work. It includes a summaries of the main epistemological conceptions about the extension as university process, as well as those that it maintain to the educational units as fundamental vehicle for the investigative labor formation and it reflects about the possibilities of these to be a canal that possesses the university to extend their culture to community. Appear also a proposal of methodology for the development of the process of university extension in the educational units. [ABSTRACT FROM AUTHOR]

En la planta Damují de la provincia de Cienfuegos, Cuba, se produce una gran parte del papel kraft empleado en las cajas de cartón que se usan como envases y embalajes. Esta empresa ha presentado diversos problemas con las autoridades ambientales por la contaminación que genera a su río homónimo, hacia el cual vierten sus efluentes líquidos y por las emisiones de gases y el consumo excesivo de su caldera de generación de vapor. El proceso de producción estaba sujeto a la introducción de tres posibles mejoras: Cierre del circuito de agua, el cual permitiría reutilizar el agua en el proceso reduciendo su consumo actual y el uso de aditivos químicos, los cuales también se recuperan; cambio de la caldera de generación de vapor por una más eficiente, lo cual disminuiría la cantidad de vapor generado por unidad de combustible; la otra posible alternativa era la reactivación del sistema de residuales de la planta, el cual se encontraba en muy mal estado. El presupuesto de la entidad no era suficiente para llevar a cabo todas estas mejoras y se requería priorizarlas. Es por ello que se debieron aplicar estudios de Análisis de Ciclo de Vida (ACV) y la simulación del proceso para evaluar técnica, económica y ambientalmente las alternativas. Según esta investigación se pueden ejecutar, el cambio de la caldera y la reactivación del sistema de residuales o el cierre del circuito de agua, decidiéndose por esta última según los criterios planteados. [ABSTRACT FROM AUTHOR]

Copyright of Espacio, Tiempo y Forma: Serie V, Historia Contemporánea is the property of Editorial UNED and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A review the principles by optimization of refining operations of bagasse pulp in disk refiners are discussed in this paper. These principles are used to research the semichemical and bleached chemical bagasse pulps from Cuba's Paper Industries. The best results were obtained with cutting angle from 70° grad and low level of specific edge load (0.75 N) and specific energy consumption (100 kWh/t). [ABSTRACT FROM AUTHOR]

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Professional culture is a complex and important concept in Cuba as result of the special attention the State and Government give to the integral education as essential complement of academic quality in Higher Educational programs. The aim of this paper is to make an up-to-date reflection about the concept of professional culture and its operationalization in the higher medical education in the country. Key programmatic and normative documents as well as the main papers and authors treating the concept were reviewed. The paper invite to discuss about the concept. Theorical and conceptual breaches were identified and discussed in order to contribute to entrenche professional and behavioural values. [ABSTRACT FROM AUTHOR]

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In the context of updating the Cuban economic model, special emphasis is placed on the development and promotion of management systems as tools for decision-making. This paper presents the design of the Management System Module, specifically the component of standardized management systems within the framework of the I Edition of the Diploma in Public and Business Administration of the Higher School of State and Government Cadres. The research is based on various tools and techniques and on the processing of scientific information from specialized databases in this area of knowledge. [ABSTRACT FROM AUTHOR]

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Copyright of e-Revista Internacional de la Protección Social is the property of e-Revista Internacional de la Proteccion Social and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper is about corporate entrepreneurship as a particular field on entrepreneurship related to established business, an understudied issue in Cuba. Considering the current situation of our state owned enterprises, has a potential for business renewal that should be taken into account. Therefore, theoretical frame, external and internal conditions for corporate entrepreneurship implementation is briefly discussed. An updated assessment of our state owned enterprises is also included and, finally, some ideas about corporate entrepreneurship implementation in our country are outlined, considering a context of profound transformations on this business. [ABSTRACT FROM AUTHOR]

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Light roofs, especially those made of asbestos-cement have been widely used in Cuba. Their use includes a wide range of building types, such as industrial facilities, warehouses, temporary facilities and that which is the focus of this paper: the one-story single-family home. These coverings have a high incidence of damage as a result of high winds produced by hurricanes and tornadoes. This paper presents a study of how the force of the wind acts on these buildings, the identification of points on the roof more susceptible to damage and a proposal of solutions - in addition to stipulations in the building code on the assembly of these roofs - to increase their resistance. [ABSTRACT FROM AUTHOR]

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Candida utilis (torula yeast) is the most widely used yeast as an animal feed supplement due to its high content of B vitamin, minerals and amino acids, therefore, in order to use it as food, studies have been carried out to increase its growth rate and production, highlighting the use of magnetic fields. This paper constitutes a review of the main characteristics of this yeast, its use as an alternative food worldwide and in Cuba, as well as the effect of the application of magnetic fields on its growth. The results of the review carried out show that Candida utilis is used in the production of unicellular protein, due to its ability to use a variety of carbon sources, being able to replace traditional protein sources. Although several investigations are reported in which the application of a static magnetic field causes an increase in the growth of fungi and yeasts, few reports were found in relation to the torula yeast, even so, it is found that low-intensity magnetic fields increase the cell biomass of this yeast. [ABSTRACT FROM AUTHOR]

Maintenance, that by definition, it is directed to "the realization of a group of operations and technical activities that assure the conservation, preservation and correction of AFT during a period of certain time against the deterioration that can cause the use and continuous exploitation as well as the noxious effects of the environment, and taken it to end at a reasonable cost and with the necessary security for people" With this article it is sought to base this unquestionable necessity and the importance of learning on the adequate use of this science; and the paper that the "Maintenance" and its impact have in the economic results of industrial enterprises. Maintenance, also gives answer to establishments of our days, such as the increment of the energy efficiency, the reduction of import of spare parts and the profitability of the companies, all of great importance for Cuban economy. Will be analyzed the insufficient use that industrial enterprises do of all the learning capacity that high education has. [ABSTRACT FROM AUTHOR]

Copyright of Memoria y Civilizacion is the property of Servicio de Publicaciones de la Universidad de Navarra, S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Revista Novedades en Población is the property of Universidad de La Habana, Centro de Estudios Demograficos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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This paper examines the use of membrane bioreactor technology (MBRs) in the treatment of wastewater generated in the dairy industry. These wastewaters have physicochemical and microbiological characteristics that require specialized treatments; biological processes are the most recommended because of their costeffectiveness, efficiency of elimination and high environmental friendliness. MBRs combine the biological degradation process with membrane filtration, obtaining a high quality effluent. They can be aerobic or anaerobic, highlighting that when the process occurs anaerobically, by-products such as biogas and biofertilizers are generated, in addition to the possibility of direct reuse of the effluent in secondary processes of the industry, which constitutes an approach to the biorefinery concept. Different investigations have shown organic matter and total suspended solids (TSS) removal values in the ranges of 90 - 99 % and 85 - 100 %, respectively, compared to conventional biological treatment processes, which only reach up to 80 %. Emphasis is placed on the type of membranes used and their particularities due to their impact on the quality of the final effluent, being microfiltration (MF) and ultrafiltration (UF) the most commonly used to treat dairy wastewater. These premises make membrane bioreactor technology a viable option for the treatment of wastewater generated in the dairy industry in Cuba. [ABSTRACT FROM AUTHOR]

This paper, it was analyzed how the angle of inclination and the azimuth influence the generation of a photovoltaic plant. The plants belonging to the 100 MW program, consisting of 30 photovoltaic plants distributed in Cuba, were analyzed. First, the plants with their current design were simulated and the results were compared with the measurements obtained in each plant. The comparison allowed validating the simulations, where the difference remained below 10%, in most cases. The next step was that different angles of inclination and an east-west orientation were analyzed. The results were compared with studies carried out in other parts of the world, where it is proposed that the angle of inclination and the east-west orientation as a new solution to increase the energy produced by a photovoltaic power plant, taking into account the geographical position, climatic conditions and the investment value or cost of the plant. [ABSTRACT FROM AUTHOR]

This paper addresses the current technological advances in the development of facilities for the testing and approval electrical vehicles batteries. Also, the main aspects for the design this kind of laboratory were analyzed with the objective in the near future in Cuba we will build it. Likewise, the most applied techniques and procedures in the world related with diagnosis and certification of electric vehicles batteries were studied. Based on these studies, the safety requirements and the equipment required for made the tests of those batteries were also considerate where the rough acquisition cost and the potential for the implementation in the country was estimated. The results of the investigation demonstrate the benefits of the implementation of this kind battery labs would be achieved, based on the profits it will generate by its use in the country. [ABSTRACT FROM AUTHOR]

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Copyright of Opuntia Brava is the property of Universidad de Ciencias Pedagogicas de Las Tunas, Centro de Documentacion e Informacion Pedagogica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)