Tekhné

Number 21.4, 2018

9
Herramientas de la calidad aplicadas en empresas venezolanas

Authors: Luis Ramírez , Mayra Narváez , Joaquín Benítez , María Remedios

Abstract

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Number of views: 456

This paper is about four tools to quality, their definition and apliccations through postgraduated course Quality Tools and Process optimization, belong to the postgraduated programs master in System of quality and Industrial engeeniering and productivity each one. The applications are part of projects assigned in the courses, where the search of the updated and applied skills is pursued developed from the formative model of Andrés Bellos Catholic University, by its abbreviations UCAB.

9
Generación de conocimientos vía investigación e innovación científica : proyección en el CIDI - UCAB

Authors: Heriberto Echezuría

Abstract

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Number of views: 514

Scientific knowledge is an asset whose real value is independent of the needs or motivations that lead to its generation. Its value materializes once it contributes to the increment of the quality of life of the society. This step is achieved with the participation of the technologists which incorporate such knowledge to improve products or services. The combination of detecting an improvement opportunity along with the generation of new knowledge that allows such an improvement is what allows the improvement of the quality of life. In the CIDI of the UCAB are proposed and executed research programs for generating new knowledge considering their potential for applicability. During the last two years there have been 13 TG in two Research Programs related to, on the one hand, to reduction of vulnerability related to natural events and environment contamination, and, on the other hand, to the improvement of quality of life of the sectors of the society with grater needs. This last aspect has been achieved developing appropriate technologies to use sustainable materials such as bamboo and clay. Students participating in CIDI´s research projects have the opportunity to develop knowledge under scientific basis and are stimulated to have a constant improvement attitude.

11
Presa Manuelote, características, falla del dique de cierre y reparación

Authors: Luis Miguel Suárez Villar , Diego Suárez Barrera

Abstract

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Number of views: 1040

The Manuelote Dam is located on the Socuy river, 100 km Northwest of Maracaibo City, Zulia State. Its purpose is the water supply for Maracaibo,El Tablazo Petrochemical Complex and flood control.The present work describes the structures that conform this site (also known as Socuy Reservoir), the failure process in the right abutment dike, the technical aspects that allowed the detection of underestimation of the hydrology and finally, the remedial works needed for its reparation.

12
Criterios de diseño y experiencias de construcción en presas de enrocado y/o grava con cara de concreto y/o geo membranas

Authors: Rafael E. Guevara Briceño

Abstract

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Number of views: 2102

Design of dams of rock or gravel with concrete face(CFRD and CFGD),without prejudice to scientific applications such as finite element analysis, has been essentially empirical, based on behavior and precedence of constructed dams; for this reason, it is of particular importance disseminate and share information and experiences in the design, construction and operation of dams. In Venezuela have been built eight dams type CFRD, the highest Yacambú 162 m; elsewhere in South America, there are about 40 of these dams, some as high as Campos Novos in Brazil of 200m and Sogamoso in Colombia of 195 m. On the other hand, in this type of CFRD dam as in concrete high-rise dams (RCC, Arc Dome, Concrete Gravity), there are using geo membranes of PVC or HDPE as a waterproof element both in rehabilitation of existing dams and construction of new dams. Another component is the elastoplastic concrete screen as alluvial foundation seepage control element. This article is a summary on advances in design criteria and construction practices in recent years in dams of gravel with impermeable elements on concrete or geo membranes and with foundations on alluvial material with elastoplastic screens

15
Uso de Lodos Rojos como catalizador en los procesos de oxidación avanzada: una aproximación al estado del arte

Authors: Guillermo Centeno Bordones , Ygmar Jimenez

Abstract

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Number of views: 941

This research addresses the use of red sludge (waste from the aluminum industry) as a catalyst in advanced oxidation processes in the retrospective and prospective scenario of effluent treatment. In the first part red sludge is described from its physical and chemical properties as a condition for application in advanced oxidation technologies, thus contributing to the new green chemistry streams. In a second section we delved into the main characteristics of these processes such as Fenton, fotoFenton, photocatalysis and others, in a final section outline the trends in research developed using red sludge in advanced oxidation processes. From the methodological point of view, it is a documentary research, with a bibliographic design. The information was colle cted in open access databases or directories (Open Access), in a study period from 2007 to 2017, the information was processed through critical and relational analysis to determine the frequencies in the themes. As findings we have that the use of red sludge in advanced oxidation processes, has been a novel catalytic technology for the application of this environmental liability in this type of processes, having excellent oxidative success in chemical processes (Fenton, Fenton-like) and Photochemicals (fotoFenton and photocatalysis)

18
Evaluación del modelo de las aceleradoras de empresas y su presencia en el ecosistema latinoamericano de emprendimientos tecnológicos

Authors: Yoel Modesto González Bravo

Abstract

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Number of views: 515

Over the last years the support to innovative technology-based ventures worldwide has experienced important innovations in its approach with the emergence of business accelerators, which are aimed at speeding up the growth of those ventures through a combination of monetary assets, human capital training and access to social capital networks. This paperattempts to evaluate the fundamentals of this new promoting mechanism, its comparison to other mechanisms for the same purposes as well as to review suggestions to standardize their performance assessment and to confirm the patterns of their adoption by the Latam technology entrepreneurial ecosystem in order to verify their suitability for their aims.