WorldWideScience

Sample records for substations aproveitamento funcional

  1. Functional utilization of control and digital protection systems in distribution substations; Aproveitamento funcional de sistemas de controle e protecao digitais em subestacoes de distribuicao

    Energy Technology Data Exchange (ETDEWEB)

    Brittes, Jose Luiz Pereira

    1996-07-01

    The application of Digital Protection and Control Systems (DPCS) in Utilities substations is a fundamental part for their Information System. Technological progress in Telematics provides nowadays, the implementation of open digital systems. But it is the wide exploitation of its potentiality that will be one of the survival factor in the competitive and multi-affair environment dictated by the new worldwide economical order. This exploitation is carried out in three levels inside the substation: at bay level, with inherent technological benefits, such as more efficient and reliable protection, data acquisition and registration, and smart control; at central level (substation), by the implantation of automatics with enormous operational and management profits; and a remote level, to whom DPCS's transpire like a very sophisticated large frame remote terminal units. (author)

  2. Functional utilization of control and digital protection systems in distribution substations; Aproveitamento funcional de sistemas de controle e protecao digitais em subestacoes de distribuicao

    Energy Technology Data Exchange (ETDEWEB)

    Brittes, Jose Luiz Pereira

    1996-07-01

    The application of Digital Protection and Control Systems (DPCS) in Utilities substations is a fundamental part for their Information System. Technological progress in Telematics provides nowadays, the implementation of open digital systems. But it is the wide exploitation of its potentiality that will be one of the survival factor in the competitive and multi-affair environment dictated by the new worldwide economical order. This exploitation is carried out in three levels inside the substation: at bay level, with inherent technological benefits, such as more efficient and reliable protection, data acquisition and registration, and smart control; at central level (substation), by the implantation of automatics with enormous operational and management profits; and a remote level, to whom DPCS's transpire like a very sophisticated large frame remote terminal units. (author)

  3. Electric Substations

    Data.gov (United States)

    Department of Homeland Security — Substations. Substations are facilities and equipment that switch, transform, or regulate electric voltage. The Substations feature class includes taps, a location...

  4. Electric power substations engineering

    CERN Document Server

    McDonald, John D

    2012-01-01

    The use of electric power substations in generation, transmission, and distribution remains one of the most challenging and exciting areas of electric power engineering. Recent technological developments have had a tremendous impact on all aspects of substation design and operation. With 80% of its chapters completely revised and two brand-new chapters on energy storage and Smart Grids, Electric Power Substations Engineering, Third Edition provides an extensive updated overview of substations, serving as a reference and guide for both industry and academia. Contributors have written each chapt

  5. Substation electromagnetic interference

    International Nuclear Information System (INIS)

    Felic, G.; Shihab, S.

    1997-01-01

    The electric and magnetic transients in high voltage substations were studied. The electric field measurements were carried out in a 66 kV switchyard of a 500/220/66 kV substation in Melbourne, Australia. The measured waveforms make up a database to be used for reference in the testing of substation control and protection equipment. The objective of this study was to characterize the radiated interference caused by the operation of disconnect switches and circuit breakers. Disconnect switch transients can be a serious hazard for substations because the slow moving contacts during opening and closing can result in arcing events of several seconds duration. Circuit breaker transients were considered to be less hazardous. Transient magnetic fields of at least several tens of A/m can occur during the energization of the capacitor bank. Substation electronic equipment should be tested and protected against the coupling of these transients in order to avoid breakdowns. 5 refs., 4 figs

  6. Electric power substations engineering

    CERN Document Server

    2003-01-01

    This book covers all aspects of substations, from the initial concept to design, automation, operation, and physical and cyber security. Written by members of the Institute of Electrical and Electronic Engineers (IEEE) Power Engineering Society (PES) Substations Committee, each section provides a tutorial and includes references for further reading and study. The authors use photographs and graphics to help the reader understand the material. Exploring the most recent technological developments regarding industry practice and standards, the book provides an extensive overview of substations th

  7. Marion Industrial Substation project

    International Nuclear Information System (INIS)

    1992-04-01

    Consumers Power, Inc. (CPI), proposes to construct a new distribution substation under the existing Bonneville Power Administration (BPA) Albay-Lebanon transmission line near the city of Albany in Linn County, Oregon. BPA is proposing to grant a new Point of Delivery to CPI at this substation. The purpose of the project is to serve the developing industrial needs in the Marion Industrial Park and on the 550 acres of nearby land within CPI's service area that are zoned for residential use. CPI prepared, and the Rural Electrification Administration (REA) has approved a Borrower's Environmental Report (BER) which addresses this action along with several other proposed projects in the CPI service area. Portions of this BER are summarized in this brief EA. BPA is preparing its own EA since Department of Energy National Environmental Policy Act (NEPA) guidelines require additional environmental concerns to be addressed than are required by REA's NEPA guidelines

  8. Automation of substation design

    Energy Technology Data Exchange (ETDEWEB)

    Milks, D. [Autodesk Inc., San Rafael, CA (United States); Scullion, T. [AutomationForce, Burlington, ON (Canada)

    2010-07-01

    Smart libraries and substation design tools are now being used by electric utilities to simplify and optimize the design of electrical control systems. A rules-based design and database approach was used to determine the placement of connections and for designing schematics, panel layouts wiring diagrams and cable schedules. Substation design solutions can reduce labour resources and field errors. Methods of synthesizing technologies in a database-centric architecture were discussed along with methods of selecting and adopting appropriate design technologies and methods for gaining efficiencies and managing change within organizations. The study demonstrated that the successful adoption of new technology requires a clear understanding of business objectives, technology requirements, and management support. 2 refs., 5 figs.

  9. PUREX new substation ATR

    International Nuclear Information System (INIS)

    Nelson, D.E.

    1997-01-01

    This document is the acceptance test report (ATR) for the New PUREX Main and Minisubstations. It covers the factory and vendor acceptance and commissioning test reports. Reports are presented for the Main 5 kV substation building, the building fire system, switchgear, and vacuum breaker; the minisubstation control building and switch gear; commissioning test; electrical system and loads inspection; electrical utilities transformer and cable; and relay setting changes based on operational experience

  10. 20 CFR 631.50 - Substate plan.

    Science.gov (United States)

    2010-04-01

    ... THE JOB TRAINING PARTNERSHIP ACT Substate Programs § 631.50 Substate plan. (a) In order to receive an...)). (g) If a substate grantee fails to meet the requirements for plan submission and approval found in...

  11. Substation Reactive Power Regulation Strategy

    Science.gov (United States)

    Zhang, Junfeng; Zhang, Chunwang; Ma, Daqing

    2018-01-01

    With the increasing requirements on the power supply quality and reliability of distribution network, voltage and reactive power regulation of substations has become one of the indispensable ways to ensure voltage quality and reactive power balance and to improve the economy and reliability of distribution network. Therefore, it is a general concern of the current power workers and operators that what kind of flexible and effective control method should be used to adjust the on-load tap-changer (OLTC) transformer and shunt compensation capacitor in a substation to achieve reactive power balance in situ, improve voltage pass rate, increase power factor and reduce active power loss. In this paper, based on the traditional nine-zone diagram and combining with the characteristics of substation, a fuzzy variable-center nine-zone diagram control method is proposed and used to make a comprehensive regulation of substation voltage and reactive power. Through the calculation and simulation of the example, this method is proved to have satisfactorily reconciled the contradiction between reactive power and voltage in real-time control and achieved the basic goal of real-time control of the substation, providing a reference value to the practical application of the substation real-time control method.

  12. Ashland Area Support Substation Project

    International Nuclear Information System (INIS)

    1992-06-01

    The Bonneville Power Administration (BPA) provides wholesale electric service to the City of Ashland (the City) by transferring power over Pacific Power ampersand Light Company's (PP ampersand L) 115-kilovolt (kV) transmission lines and through PP ampersand L's Ashland and Oak Knoll Substations. The City distributes power over a 12.5-kV system which is heavily loaded during winter peak periods and which has reached the limit of its ability to serve peak loads in a reliable manner. Peak loads under normal winter conditions have exceeded the ratings of the transformers at both the Ashland and Oak Knoll Substations. In 1989, the City modified its distribution system at the request of PP ampersand L to allow transfer of three megawatts (MW's) of electric power from the overloaded Ashland Substation to the Oak Knoll Substation. In cooperation with PP ampersand L, BPA installed a temporary 6-8 megavolt-amp (MVA) 115-12.5-kV transformer for this purpose. This additional transformer, however, is only a temporary remedy. BPA needs to provide additional, reliable long-term service to the Ashland area through additional transformation in order to keep similar power failures from occurring during upcoming winters in the Ashland area. The temporary installation of another 20-MVA mobile transformer at the Ashland Substation and additional load curtailment are currently being studied to provide for sustained electrical service by the peak winter period 1992. Two overall electrical plans-of-service are described and evaluated in this report. One of them is proposed for action. Within that proposed plan-of-service are location options for the substation. Note that descriptions of actions that may be taken by the City of Ashland are based on information provided by them

  13. Electric Company - Medium Voltage Substations

    OpenAIRE

    MacCosham, Spencer

    2014-01-01

    The capstone project goal was to recommend ways to increase sales of our client’s product by a factor of 10. The core of our project included researching and analyzing the client’s “Model III” package-unit-substations. Specifically, the project objectives were two-fold: First, we were to conduct market research and data analysis on package unit substations in North America. We needed to identify sales channels, competitors, potential substitutes, etc. Second, we were to identify market/channe...

  14. Standard IEC 61850 substation automation

    Energy Technology Data Exchange (ETDEWEB)

    Bricchi, A.; Mezzadri, D. [Selta, Tortoreto (Italy)

    2008-07-01

    The International Electrotechnical Commission (IEC) 61850 standard is the reference communication protocol for all electrical substations protection and control systems. It creates models of all the elements and functionalities of an electrical substation, including physical elements such as switches or circuit breakers, as well as protection, control and monitoring functionalities. Network managers need to renew power substation automation and control systems in order to improve the efficiency and quality of services offered by electric utilities. Selta has proposed a new integrated solution for the automation of power substations which is fully compliant with the IEC 61850 norms. The solution involves the integration of control, automation, protection, monitoring and maintenance functions and applies leading edge technology to its systems, particularly for the TERNA network. The system is based on the use of many electronic devices at a power plant, each one with a specialized function, and all interconnected via a Station LAN. This solution, was tested on the TERNA network in Italy, in VHV and HV stations. It was shown to offer many advantages, such as an architecture based on full interoperability between control, monitoring and protection equipment; centralized and distributed automation; a LAN station that allows full interoperability between different bay units and protection relays in order to integrate equipment from various suppliers; the integration of automation systems in existing bay units and protection relays equipped with standard communication buses or with proprietary interfaces; and time synchronization for the entire system through a station GPS reception system. 10 refs., 1 tab., 7 figs.

  15. Guidelines for District Heating Substations

    Energy Technology Data Exchange (ETDEWEB)

    2009-07-15

    The present guidelines contain a set of recommendations focusing on planning, installation, use and maintenance of district heating (DH) substations within district heating systems throughout Europe. The recommendations were developed in order to enable readers to develop well-functioning substations and an effective heat and domestic warm water delivery. These guidelines are intended to give the most effective overall solutions for various parts of the customer installation. The guidelines are not meant to specify the different components of the substation such as meters or heat exchangers. The guidelines deal with a wide variety of issues concerning both present systems of today and district heating systems of the future. Specific handling and maintenance recommendations are mainly focused on present modern systems but are also intended to cover the future situation as much as is feasible. For this reason, certain existing systems are not dealt with in these guidelines. For instance, these guidelines do not cover steam systems, systems with temperatures exceeding 110 deg C and pressure levels above 1.6 MPa. The guidelines include a chapter on the heat meter, as the meter and especially the meter installation is always installed simultaneously with the rest of the substation. These guidelines aim to provide best-practice and easy-to-handle recommendations for: - those who are responsible for relations between district heating utilities and customers; - those who own or maintain a building connected to the district heating network; - those who manufacture, plan, purchase, test and install substations. These guidelines do not deal with investment or cost aspects, but in general, Euroheat and Power recommends looking at the lifetime cost of all components of the substation, instead of investment costs alone. An example of this is provided in Chapter 7.8. The Guidelines were developed based on the most optimal operating principles of substations and meters

  16. Wolf Point Substation, Roosevelt County, Montana

    International Nuclear Information System (INIS)

    1991-05-01

    The Western Area Power Administration (Western), an agency of the United States Department of Energy, is proposing to construct the 115-kV Wolf Point Substation near Wolf Point in Roosevelt County, Montana (Figure 1). As part of the construction project, Western's existing Wolf Point Substation would be taken out of service. The existing 115-kV Wolf Point Substation is located approximately 3 miles west of Wolf Point, Montana (Figure 2). The substation was constructed in 1949. The existing Wolf Point Substation serves as a ''Switching Station'' for the 115-kV transmission in the region. The need for substation improvements is based on operational and reliability issues. For this environmental assessment (EA), the environmental review of the proposed project took into account the removal of the old Wolf Point Substation, rerouting of the five Western lines and four lines from the Cooperatives and Montana-Dakota Utilities Company, and the new road into the proposed substation. Reference to the new proposed Wolf Point Substation in the EA includes these facilities as well as the old substation site. The environmental review looked at the impacts to all resource areas in the Wolf Point area. 7 refs., 6 figs

  17. Security architecture for substations. Voltage transformation stations and substations; Sicherheitsarchitektur fuer Substations. Umspannwerke und -stationen

    Energy Technology Data Exchange (ETDEWEB)

    Seewald, Maik G. [Cisco Systems GmbH, Halbergmoos (Germany). Bereich Forschung und Entwicklung

    2012-04-30

    Voltage transformation stations and substations are a central component of the electrical power supply. These fulfill key functions at different voltage levels, are highly automated and linked via different communication technologies. Thus they play a central role in the IT security and belong to the critical infrastructure. This is addressed by various standards and guidelines. Therefore, a comprehensive security structure for substations as well as primary and secondary systems are an important criterion for success in the expansion of power supply networks. This is even more important, since the degree of crosslinking will increase as a result of new systems and services. The author of the contribution under consideration depicts the security architecture which was specifically developed for this area by Cisco Systems GmbH (Hallbergmoos, Federal Republic of Germany).

  18. Development of Diagnostic Technology for Substation Facilities

    Energy Technology Data Exchange (ETDEWEB)

    Kweon, D.J.; Yoon, J.Y. [Korea Electric Power Research Institute, Taejeon (Korea, Republic of)

    1998-09-01

    This report contains the conceptual design of predictive diagnostic system for KEPCO 765kV substation apparatus which will be operated in 2001. Various kinds of techniques in the world for power transformer and GIS monitoring were examined, then the integrated diagnosis system configuration which will be most effective in our future substation was suggested. In addition, the development of the optimum life management for substation facilities. development of a system to measure the ESDD of substation insulator surfaces at a distance and application study of the degradation sensor(PCS) were described also. (author) 55 refs., 27 figs., 68 tabs.

  19. Environmental impact of high voltage substations

    International Nuclear Information System (INIS)

    Geambasu, C.; Popadiuc, S.; Drobota, C.; Marza, F.

    2004-01-01

    The first Romanian methodology for simultaneous environmental and human risk evaluation in case of HV installations within substations pertaining to nuclear power stations, based on EU regulation is now applicable in Cernavoda substation. High voltage substations are zones where the environmental impact is focused on electromagnetic field that's causes particular effects in living tissues (human being included). That is the reason why is necessary to identify the potential risk sources, the asses including the way to correct them and to dissimulate the results to the staff and the operational personal.(author)

  20. HVS effect in electric-power substations

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez, F.F.

    1973-01-01

    A syndrome is described which the author calls the ''HVS effect'' (high-voltage substation) and affects persons working at substations where very high-voltage current is transformed and which disappears shortly after the end of the exposure. It is characterized by a feeling of tightness and oppression affecting the head, laxity and fatigue in the upper extremities and persistent insomnia; electroencephalograms show signs of cerebral pain. (Cis Abstr.)

  1. HVS effect in electric-power substations

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez, F F

    1973-01-01

    A syndrome is described which the author calls the ''HVS effect'' (high-voltage substation) and affects persons working at substations where very high-voltage current is transformed and which disappears shortly after the end of the exposure. It is characterized by a feeling of tightness and oppression affecting the head, laxity and fatigue in the upper extremities and persistent insomnia; electroencephalograms show signs of cerebral pain. (Cis Abstr.)

  2. Directional sound radiation from substation transformers

    International Nuclear Information System (INIS)

    Maybee, N.

    2009-01-01

    This paper presented the results of a study in which acoustical measurements at two substations were analyzed to investigate the directional behaviour of typical arrays having 2 or 3 transformers. Substation transformers produce a characteristic humming sound that is caused primarily by vibration of the core at twice the frequency of the power supply. The humming noise radiates predominantly from the tank enclosing the core. The main components of the sound are harmonics of 120 Hz. Sound pressure level data were obtained for various directions and distances from the arrays, ranging from 0.5 m to over 100 m. The measured sound pressure levels of the transformer tones displayed substantial positive and negative excursions from the calculated average values for many distances and directions. The results support the concept that the directional effects are associated with constructive and destructive interference of tonal sound waves emanating from different parts of the array. Significant variations in the directional sound pattern can occur in the near field of a single transformer or an array, and the extent of the near field is significantly larger than the scale of the array. Based on typical dimensions for substation sites, the distance to the far field may be much beyond the substation boundary and beyond typical setbacks to the closest dwellings. As such, the directional sound radiation produced by transformer arrays introduces additional uncertainty in the prediction of substation sound levels at dwellings within a few hundred meters of a substation site. 4 refs., 4 figs.

  3. Funciones sociales del folclore

    Directory of Open Access Journals (Sweden)

    Alberto Londoño Álvarez

    1969-07-01

    Full Text Available Con el objeto de estudiar los principales aspectos sociológicos del folclore, empecemos con uno de los problemas más significativos, cual es el análisis de sus funciones que cumple en una sociedad. se trata de un asunto perteneciente al sociólogo, quien, con el propósito de mostrar al folclórogo, que su investigación no es única, porque se refiere a un hecho que pertenece al grupo de los fenómenos sociales.

  4. Maintenance Optimization of High Voltage Substation Model

    Directory of Open Access Journals (Sweden)

    Radim Bris

    2008-01-01

    Full Text Available The real system from practice is selected for optimization purpose in this paper. We describe the real scheme of a high voltage (HV substation in different work states. Model scheme of the HV substation 22 kV is demonstrated within the paper. The scheme serves as input model scheme for the maintenance optimization. The input reliability and cost parameters of all components are given: the preventive and corrective maintenance costs, the actual maintenance period (being optimized, the failure rate and mean time to repair - MTTR.

  5. Experimental adoption of RCM in EDF substations

    International Nuclear Information System (INIS)

    Heroin, G.; Aupied, J.; Sanchis, G.

    1995-12-01

    EDF, after testing Reliability Centred Maintenance (RCM) on systems used in nuclear power plants, has now successfully extended RCM to all of its nuclear power plants. In the light of this experience, EDF has committed itself to a pilot study on a line bay of a 400 kV substation in 1992. The RCM method as applied benefited from EDF's policy of maintenance, introduced five years ago on all substations, which has enhanced prospects of reliability. The original feature in the selection of maintenance tasks was that it brought into play two criteria for failure assessment: frequency and seriousness, and two criteria for maintenance task selection: efficiency and facility. (author)

  6. Using Immersive Virtual Reality for Electrical Substation Training

    Science.gov (United States)

    Tanaka, Eduardo H.; Paludo, Juliana A.; Cordeiro, Carlúcio S.; Domingues, Leonardo R.; Gadbem, Edgar V.; Euflausino, Adriana

    2015-01-01

    Usually, distribution electricians are called upon to solve technical problems found in electrical substations. In this project, we apply problem-based learning to a training program for electricians, with the help of a virtual reality environment that simulates a real substation. Using this virtual substation, users may safely practice maneuvers…

  7. Arquitectura, arte funcional

    Directory of Open Access Journals (Sweden)

    Monjo Carrió, Juan

    1985-10-01

    Full Text Available The begining of this work is devoted to the analysis of the concepts of Art, Science and Technique and their historical evolution, distinguishing between "fine arts" and "technique arts". Following, Architect and Architecture terms are defined both conceptual and professionally, analysing as well its historical evolution and pointing out the interdependence between the architectural conception as "fine art" and the constructive technology as "technique art", finally reminding the necessary scientific base of this one (Construction Physics. Consequently, the need for architecture professionals of constructive technology knowledge, is also reminded. At last, the functional character of the Architecture (Architecture as a "functional art" is analysed, going over the three basic aspects of this functionality (Integrity-firmitas, Habitability-utilitas and Aesthetics-venustas.Se inicia el trabajo analizando los conceptos de Arte, Ciencia y Técnica y su evolución histórica, distinguiendo entre ¡as "bellas artes" y las "artes técnicas". A continuación se definen los conceptos de Arquitecto y Arquitectura, tanto conceptual como profesionalmente, analizando, asimismo, su evolución histórica y haciendo hincapié en la interdependencia entre la concepción arquitectónica como "bella arte" y la tecnología constructiva como "arte técnica", para terminar recordando la necesaria base científica de esta última (la Física de la Construcción. Como consecuencia, se recuerda la necesidad de los conocimientos de la tecnología constructiva en los arquitectos profesionales. Por último, se analiza el carácter funcional de la Arquitectura (Arquitectura como "arte funcional" y se hace un breve recorrido por los tres aspectos básicos de esa funcionalidad (Integridad-firmitas, Habitabilidad-utilitas y Estética-venustas.

  8. APROVEITAMENTO IMEDIATO DA ÁGUA DE CHUVA

    OpenAIRE

    Cícero Onofre de Andrade Neto

    2013-01-01

    A água de chuva será, em breve, valorizada como a água mais segura que se obterá para consumo humano e com boa qualidade para diversos fins, necessitando, em muitos casos, apenas de tratamento simplificado para purificação. No Brasil, o uso de água de chuva ocorre há séculos, mas a captação imediata no meio urbano, visando ao aproveitamento em usos diversos, ainda é insipiente, e no meio rural somente na última década é que a construção de cisternas vem se disseminando para abastecimento difu...

  9. Earthquake evaluation of a substation network

    International Nuclear Information System (INIS)

    Matsuda, E.N.; Savage, W.U.; Williams, K.K.; Laguens, G.C.

    1991-01-01

    The impact of the occurrence of a large, damaging earthquake on a regional electric power system is a function of the geographical distribution of strong shaking, the vulnerability of various types of electric equipment located within the affected region, and operational resources available to maintain or restore electric system functionality. Experience from numerous worldwide earthquake occurrences has shown that seismic damage to high-voltage substation equipment is typically the reason for post-earthquake loss of electric service. In this paper, the authors develop and apply a methodology to analyze earthquake impacts on Pacific Gas and Electric Company's (PG and E's) high-voltage electric substation network in central and northern California. The authors' objectives are to identify and prioritize ways to reduce the potential impact of future earthquakes on our electric system, refine PG and E's earthquake preparedness and response plans to be more realistic, and optimize seismic criteria for future equipment purchases for the electric system

  10. Utilization of gamagraphy in shielded substation

    International Nuclear Information System (INIS)

    Franca, W.J.; Pereira, M.J.

    1987-01-01

    The radiographic inspection using gamma rays applied to the bars/ insulating cones conenctions in SF6 gas-insulated transmission lines to idetify the bars which its lenghts could cause a failure, without disassembling, is presented. Using gamma rays radiography it was possible to correct the lenght of the bars found out the permissible tolerances with substantial reduction of the servicing time and consequently increase of the substation reliability. (author) [pt

  11. Project FOOTPRINT: Substation modeling and simulations for E1 pulses

    Energy Technology Data Exchange (ETDEWEB)

    Nelson, Scott D. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Larson, D. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Kirkendall, B. A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2017-11-06

    This report includes a presentation with an: Introduction to CW coupling; Introduction to single-pulse coupling; Description of E1 waveforms; Structures in a substation yard --articulated (as part of the substation's defined electrical functionality)--unarticulated (not as part of the substation's defined electrical functionality); Coupling --electrical coupling (capacitive coupling) --magnetic coupling (inductive coupling); Connectivity to long-line transmission lines; Control infrastructure; Summary; and References.

  12. APROVEITAMENTO IMEDIATO DA ÁGUA DE CHUVA

    Directory of Open Access Journals (Sweden)

    Cícero Onofre de Andrade Neto

    2013-03-01

    Full Text Available A água de chuva será, em breve, valorizada como a água mais segura que se obterá para consumo humano e com boa qualidade para diversos fins, necessitando, em muitos casos, apenas de tratamento simplificado para purificação. No Brasil, o uso de água de chuva ocorre há séculos, mas a captação imediata no meio urbano, visando ao aproveitamento em usos diversos, ainda é insipiente, e no meio rural somente na última década é que a construção de cisternas vem se disseminando para abastecimento difuso de água. Existe amplo conhecimento tecnológico internacional e nacional que deve ser utilizado de forma mais competente para o aproveitamento imediato da água de chuva, sobretudo para maximizar a relação benefício/custo, aumentar a segurança sanitária dos sistemas e assegurar a qualidade da água. Este trabalho procura mostrar as vantagens do aproveitamento imediato da água de chuva para diversos usos, apresenta e comenta avanços, e avalia e discute a segurança da água e a proteção sanitária do sistema de captação e armazenamento. Destaca a atenção que deve ser dispensada aos primeiros milímetros da cada chuva, pois estes têm grande influência sobre a qualidade da água captada em cisternas; já que esta quantidade é, geralmente, suficiente para lavar a atmosfera e a superfície de captação. Se esta água for descartada, o restante da água da chuva tem boa qualidade para diversos usos, e existem dispositivos simples, de baixo custo e de eficiência comprovada para o descarte automático das águas do primeiro milímetro de cada chuva. Quanto às ações de governo das últimas décadas para implantação de cisternas no meio rural no Brasil, é necessário avançar no desenvolvimento e adequação da tecnologia, e manter ou acelerar o ritmo das ações, mas sem perder as diretrizes políticas conquistadas, voltadas para a justiça social e a cidadania.

  13. Optimised compact SF6 switchgear, mobile substations and modules for improved substation economics

    Energy Technology Data Exchange (ETDEWEB)

    Mikes, E.G. [Areva T and D gas insulated substations, Oberetfelder (Switzerland); Montillet, G.F. [Areva T and D, Charleroi, PA (United States)

    2007-07-01

    One of the key elements of the electrical transmission and subdistribution networks in dense industrial areas and cities are gas insulated substations (GIS). More economical and ecological aspects in new designs are increasingly forcing the selection of smaller optimised switchgear. This paper discussed new spring mechanisms, gasket design, monitoring systems, and eco-design. Utilities are looking for new substations, upgrades, refurbishments and more efficient solutions for an extension to the current expanding infrastructure. For temporary installations, mines and some specific industries mobile substations are a great opportunity. The paper discussed several types of designs, including mobile GIS and one platform solutions for small and midsize substations; prefabricated and container solutions; hybrid switchgear modules with integrated control and monitoring functions; and optimization of GIS solutions for different station layouts having combined-functions such as circuit breaker/disconnector units. It was concluded that the search for the ongoing enhancement of the solutions in terms of cost-effectiveness and increased availability by utilities demonstrate that the system's rated voltage level and single-line-diagram configuration and in some cases the geographical position are the critical elements that determine the choice between several alternatives. 13 refs, 16 figs.

  14. Analysis of the 35 KV substation secondary system

    Science.gov (United States)

    Zhao, Yong; Jiang, Jianguo; Jiang, Chunlei; Ren, Shuang; Liu, Songbin

    2017-04-01

    This paper analyzes the status of the two system of some 35KV users' substation in Daqing oil field, the deficiencies of the two system of the existing 35KV substation are found out. And put forward the opinion of acceptance in the future work. I hope it can able to work in the future on the protection of professional help.

  15. Canby Area Service Project substation and associated transmission line

    International Nuclear Information System (INIS)

    1992-02-01

    Bonneville Power Administration (BPA) provides power to Surprise Valley Electrification Corporation (SVEC) in Modoc County, California. BPA uses PacificCorp's substation and transmission facilities between Alturas and Canby, California to transfer power to SVEC's Canby Substation. In the next year, SVEC expects increased industrial, agricultural, and residential electric loads on their 69-kV transmission system south of Canby. SVEC's substation can accommodate only about 10 percent of the expected additional electric load. BPA's proposed action is intended to meet SVEC's increasing electric load. BPA proposes to meet SVEC's increasing energy load by tapping into BPA's existing BPA Malin-Warner 230-kV transmission line, and building an 7.9-mile transmission line to a new BPA substation. BPA proposes to build the new substation next to the west side of SVEC's Canby Substation (Figure 1). This new substation will allow SVEC to move the additional power over their existing transmission or distribution lines. This report is the environmental assessment of the potential impact of the proposed project. The assessment determined that no ''environmental impact statement'' is not required

  16. Study on Noise Prediction Model and Control Schemes for Substation

    Science.gov (United States)

    Gao, Yang; Liu, Songtao

    2014-01-01

    With the government's emphasis on environmental issues of power transmission and transformation project, noise pollution has become a prominent problem now. The noise from the working transformer, reactor, and other electrical equipment in the substation will bring negative effect to the ambient environment. This paper focuses on using acoustic software for the simulation and calculation method to control substation noise. According to the characteristics of the substation noise and the techniques of noise reduction, a substation's acoustic field model was established with the SoundPLAN software to predict the scope of substation noise. On this basis, 4 reasonable noise control schemes were advanced to provide some helpful references for noise control during the new substation's design and construction process. And the feasibility and application effect of these control schemes can be verified by using the method of simulation modeling. The simulation results show that the substation always has the problem of excessive noise at boundary under the conventional measures. The excess noise can be efficiently reduced by taking the corresponding noise reduction methods. PMID:24672356

  17. Fault diagnosis methods for district heating substations

    Energy Technology Data Exchange (ETDEWEB)

    Pakanen, J.; Hyvaerinen, J.; Kuismin, J.; Ahonen, M. [VTT Building Technology, Espoo (Finland). Building Physics, Building Services and Fire Technology

    1996-12-31

    A district heating substation is a demanding process for fault diagnosis. The process is nonlinear, load conditions of the district heating network change unpredictably and standard instrumentation is designed only for control and local monitoring purposes, not for automated diagnosis. Extra instrumentation means additional cost, which is usually not acceptable to consumers. That is why all conventional methods are not applicable in this environment. The paper presents five different approaches to fault diagnosis. While developing the methods, various kinds of pragmatic aspects and robustness had to be considered in order to achieve practical solutions. The presented methods are: classification of faults using performance indexing, static and physical modelling of process equipment, energy balance of the process, interactive fault tree reasoning and statistical tests. The methods are applied to a control valve, a heat excharger, a mud separating device and the whole process. The developed methods are verified in practice using simulation, simulation or field tests. (orig.) (25 refs.)

  18. Substation Location in Offshore Wind Farms - A Planar Multi-Facility Location-Routing Problem

    OpenAIRE

    Amland, Thomas

    2014-01-01

    In offshore wind farms, two important parts of the design are to determine locations for substations and a cabling layout that connects every turbine to a substation. These problems are interconnected, as the cable layout depends on the choice of location for the substation. In this thesis we investigate how to set the location of substations such that the total cable cost is minimized.

  19. Calculation of noise maps around electrical energy substations

    International Nuclear Information System (INIS)

    Diniz, Fabiano B.; Zannin, Paulo H.T.

    2005-01-01

    This work is aimed at studying the noise caused by the transformers found in electrical substations located in calm areas in the city of Curitiba, Brazil. Although the level itself reaching the nearby buildings is not high if compared to other noise sources commonly found in a large city, they produce an annoying noise due to its low frequency tonal components. Two substations and their surroundings have been analyzed and acoustically mapped. The results have shown that some houses receive up to 35 dB(A) near one of the substations, which may led to some discomfort. It has also been noticed that a good planning of a substation, mainly of the firewalls, may help putting the houses under acoustical shadows. (Author)

  20. INTELLIGENT DIAGNOSTIC SYSTEM OF EMERGENCY SITUATIONS IN TRACTION SUBSTATIONS DC

    Directory of Open Access Journals (Sweden)

    Sh. N. Nasyrov

    2009-09-01

    Full Text Available In the article the architecture and algorithm of operating an expert system providing the efficiency of functioning the electric equipment for traction substation as well as the four-parameter belonging function are determined.

  1. Network Multifunctional Substation with Embedded System in Coal Mine

    Institute of Scientific and Technical Information of China (English)

    MENG Fan-rong; HUO Yan; ZHOU Yong

    2006-01-01

    In order to solve the problems of mining monitor and control systems during the construction process of digital mining combined with network and embedded technologies, the kernel access equipment of a mining monitor and control system was proposed and designed. It is the architecture of a mining embedded network multifunctional substation. This paper presents the design of hardware and software of the substation in detail. Finally, the system's efficiency was validated through experimentation.

  2. Fuzzy logic based ELF magnetic field estimation in substations

    International Nuclear Information System (INIS)

    Kosalay, I.

    2008-01-01

    This paper examines estimation of the extremely low frequency magnetic fields (MF) in the power substation. First, the results of the previous relevant research studies and the MF measurements in a sample power substation are presented. Then, a fuzzy logic model based on the geometric definitions in order to estimate the MF distribution is explained. Visual software, which has a three-dimensional screening unit, based on the fuzzy logic technique, has been developed. (authors)

  3. National SCADA Test Bed Substation Automation Evaluation Report

    Energy Technology Data Exchange (ETDEWEB)

    Kenneth Barnes; Briam Johnson

    2009-10-01

    Increased awareness of the potential for cyber attack has recently resulted in improved cyber security practices associated with the electrical power grid. However, the level of practical understanding and deployment of cyber security practices has not been evenly applied across all business sectors. Much of the focus has been centered on information technology business centers and control rooms. This report explores the current level of substation automation, communication, and cyber security protection deployed in electrical substations throughout existing utilities in the United States. This report documents the evaluation of substation automation implementation and associated vulnerabilities. This evaluation used research conducted by Newton-Evans Research Company for some of its observations and results. The Newton Evans Report aided in the determination of what is the state of substation automation in North American electric utilities. Idaho National Laboratory cyber security experts aided in the determination of what cyber vulnerabilities may pose a threat to electrical substations. This report includes cyber vulnerabilities as well as recommended mitigations. It also describes specific cyber issues found in typical substation automation configurations within the electric utility industry. The evaluation report was performed over a 5-month period starting in October 2008

  4. Uncertainty models applied to the substation planning

    Energy Technology Data Exchange (ETDEWEB)

    Fontoura Filho, Roberto N [ELETROBRAS, Rio de Janeiro, RJ (Brazil); Aires, Joao Carlos O; Tortelly, Debora L.S. [Light Servicos de Eletricidade S.A., Rio de Janeiro, RJ (Brazil)

    1994-12-31

    The selection of the reinforcements for a power system expansion becomes a difficult task on an environment of uncertainties. These uncertainties can be classified according to their sources as exogenous and endogenous. The first one is associated to the elements of the generation, transmission and distribution systems. The exogenous uncertainly is associated to external aspects, as the financial resources, the time spent to build the installations, the equipment price and the load level. The load uncertainly is extremely sensible to the behaviour of the economic conditions. Although the impossibility to take out completely the uncertainty , the endogenous one can be convenient treated and the exogenous uncertainly can be compensated. This paper describes an uncertainty treatment methodology and a practical application to a group of substations belonging to LIGHT company, the Rio de Janeiro electric utility. The equipment performance uncertainty is treated by adopting a probabilistic approach. The uncertainly associated to the load increase is considered by using technical analysis of scenarios and choice criteria based on the Decision Theory. On this paper it was used the Savage Method and the Fuzzy Set Method, in order to select the best middle term reinforcements plan. (author) 7 refs., 4 figs., 6 tabs.

  5. Fast substation service restoration using intelligent petri-nets models

    Energy Technology Data Exchange (ETDEWEB)

    Yang, H.T.; Peng, P.C.; Jiang, H.L. [Chung Yuan Christian Univ., Chung Li, Taiwan (China)

    2006-07-01

    Service restoration of a substation is a stressful and immediate task that must be conducted by system operators following a blackout. Operators, including those of Taiwan Power Company (TPC), normally restore power loads on the basis of their past experiences and engineering heuristics. Due to the significant number of switching operations to be evaluated, a computer-aided decision support system can be quite valuable. In distribution system automation, installation of unmanned substations requires an automated restoration computer system to rapidly devise a switching plan after a fault event. The modeling technique of Petri Nets (PNs) encompasses fault diagnosis of distribution systems, protective scheming of relays, and generic restoration schedule of power transmission systems. Knowledge or configuration about the system concerned can be expressed systematically through a structured model with parallelism and synchronization. This paper proposed a new PNs knowledge representation scheme to achieve a fast, on-line service restoration plan of a substation. The paper described the task of service restoration in a substation as well as the heuristic rules adopted by the dispatchers of the TPC distribution systems. The paper also introduced the topic of Typical PN properties and the proposed matrix operations for PNs reasoning. The proposed basic PNs model for service restoration on the basis of the engineering heuristics were also identified. It was concluded that the proposed approach not only facilitated software programming, but was highly adaptive to the extension or maintenance of the developed programs, arising from the changes of the substation configuration. 18 refs., 1 tab., 8 figs.

  6. Vendaje Funcional para la Fascitis Plantar

    OpenAIRE

    Julián Rochina, Iván

    2012-01-01

    El profesor Vicente Tormo aplica un vendaje funcional que aproxima a su centro geométrico las estructuras que configuran la planta del pie, con el objetivo de mantener relajada la fascia plantar durante la bipedestación.

  7. 29 CFR 1926.957 - Construction in energized substations.

    Science.gov (United States)

    2010-07-01

    ... Distribution § 1926.957 Construction in energized substations. (a) Work near energized equipment facilities. (1... lines. When it is necessary to deenergize equipment or lines for protection of employees, the... large electrical equipment, transformers, or breakers. (f) Storage. The storage requirements of § 1926...

  8. Major Refit for CERN's 400 kV Substation

    CERN Multimedia

    2001-01-01

    The 400 kV substation on the Prévessin site brings in the electricity that powers CERN's accelerators and the majority of the Laboratory's installations. It was originally built in the 1970s for the SPS, and is one of only five privately owned 400 kV sub-stations in France. Three of the others belong to the national railway company, SNCF, supplying the Paris-Marseilles TGV line, the other is at the Cadarache research centre near mouth of the Rhone. After nearly thirty years of service, CERN's substation has just undergone a complete overhaul. The new main 18 kV switchboard for the SPS pulsed network. The electricity supply for the original Prévessin substation was from the 400 kV EDF network, delivered through three 90 MW transformers at 18 kV to the SPS pulsed network, With the arrival of LEP, two 110 MW transformers were added to supply the new accelerator. Now, as CERN gears up for the LHC, additional pulsed power capacity is needed to supply the transfer lines carrying protons from...

  9. Improved district heating substation efficiency with a new control strategy

    International Nuclear Information System (INIS)

    Gustafsson, Jonas; Delsing, Jerker; Deventer, Jan van

    2010-01-01

    In this paper, we describe a new alternative control approach for indirectly connected district heating substations. Simulations results showed that the new approach results in an increased ΔT across the substation. Results were obtained for both ideal and non-ideal operation of the system, meaning that less water must be pumped through the district heating network, and a higher overall fuel efficiency can be obtained in the district heating power plants. When a higher fuel efficiency is achieved, the usage of primary fuel sources can be reduced. Improved efficiency also increases the effective heat transfer capacity of a district heating network, allowing more customers to be connected to an existing network without increasing the heating plant or network capacity. Also, if combined heat and power plants are used to produce the heat, the increased ΔT will result in a further improved overall fuel efficiency, as more electricity can be produced with colder cooling water. The idea behind the new control method is to consider the temperature of the water supplying the district heating substation with heat, often referred to as the primary supply temperature. This represents a logical next step, as currently, the only parameter generally taken into account or measured when controlling the temperature level of the radiator circuit is the local outdoor temperature. In this paper we show how the primary supply temperature together with thermodynamic knowledge of the building can be used to maximize the ΔT across the district heating substation.

  10. Reliability 'H' scheme of HV/MV substations

    Directory of Open Access Journals (Sweden)

    Perić Dragoslav M.

    2015-01-01

    Full Text Available Substations (HV/MV connect transmission and distribution systems with consumers of electric energy. The selective search method was used for calculation of substation reliability, where all arrangement elements were grouped into blocks. Subject of the analysis was H-arrangements comprising air-insulated switchgears on the high voltage side of HV/MV substations with different number of feeder and transformer bays and diverse scope of the installed switching equipment. Failure rate and duration were used as main HV/MV substation equipment reliability indices. A large number of arrangements were classified into groups, and within a group the arrangements were ranked with the use of multiple criteria. It is shown that the reliability of the electricity transit depends on the equipment of field for the transit of electricity, which favors poorly equipped field. On the other hand, the reliability of transformation of the full power depends mostly on the equipment in coupling field. It is essential that in the coupling field, there are at least two disconnectors. Installation of the switch in the coupling field is meaningful only with appropriate protection, because it further improves reliability. Conclusions are drawn for phased construction and expansion of the single pole diagram with an additional field for the transmission line.

  11. MONITORING OF ELECTRICAL ENERGY QUALITY ON THE TRACTION SUBSTATION INPUT

    Directory of Open Access Journals (Sweden)

    O.G. Gryb

    2015-12-01

    Full Text Available For the implementation of measures to maintain the quality of the energy industrial enterprises have to spend a significant material and monetary assets. In this regard, significant is the feasibility study of the allocation of such funds and, primarily, the determination of the economic damage arising from low quality of electricity. The reliability of the electricity metering system, relay protection and automation of modern digital substations depends on the quality of electrical energy. At the present time to improve the reliability of the substation operation it is necessary to monitor indicators of quality of electric energy, allowing you to take organizational and technical solutions for their improvement. Monitoring the power quality at the input traction substation has shown that indicators such as the coefficient of the n-th harmonic component of the voltage does not meet the standards GOST 13109-97. The source of higher harmonics is a voltage Converter used on the locomotive. To eliminate higher harmonics in the supply network for traction substations will need to install power filters. Today, the USB-analyzer of power quality «Digital measurement system of power quality» type of CSICE of accuracy class 0.2. Work energy requires reliable and quality electricity supply to consumers. The new model of balancing energy market are bilateral contracts. The main task of this market, it ensure the stable and reliable operation of the unified energy system of Ukraine, that is, transmission and supply of electricity of appropriate quality.

  12. Optimal Allocation of Smart Substations in a Distribution System Considering Interruption Costs of Customers

    DEFF Research Database (Denmark)

    Sun, Lei; You, Shi; Hu, Junjie

    2016-01-01

    number and allocation of smart substations in a given distribution system is presented, with the upgrade costs of substations and the interruption costs of customers taken into account. Besides, the reliability criterion is also properly considered in the model. By linearization strategies, the SSAM......One of the major functions of a smart substation (SS) is to restore power supply to interrupted customers as quickly as possible after an outage. The high cost of a smart substation limits its widespread utilization. In this paper, a smart substation allocation model (SSAM) to determine the optimal...

  13. Aproveitamento de Água de Chuva em unidades Educacionais do Rio Grande do Norte, Brasil

    OpenAIRE

    Xaila Sant Anna Amaral; Ceres Virgínia da Costa Dantas; Carlos Antonio Lira Felipe Neto; Cícero Onofre de Andrade Neto; André Luís Calado Araújo

    2017-01-01

    Com este estudo objetivou-se avaliar os sistemas de aproveitamento de água de chuva em unidades educacionais do Rio Grande do Norte. Inicialmente, foi realizado um levantamento de informações sobre os sistemas de aproveitamento de água de chuva dos campi do IFRN. Em seguida, os campi foram visitados para validação das informações colhidas e verificação de outros elementos pertinentes (áreas da superfície de captação, tipos e volumes de reservatórios, estado físico das instalações, condições o...

  14. Ocean Wave Energy: Underwater Substation System for Wave Energy Converters

    International Nuclear Information System (INIS)

    Rahm, Magnus

    2010-01-01

    This thesis deals with a system for operation of directly driven offshore wave energy converters. The work that has been carried out includes laboratory testing of a permanent magnet linear generator, wave energy converter mechanical design and offshore testing, and finally design, implementation, and offshore testing of an underwater collector substation. Long-term testing of a single point absorber, which was installed in March 2006, has been performed in real ocean waves in linear and in non-linear damping mode. The two different damping modes were realized by, first, a resistive load, and second, a rectifier with voltage smoothing capacitors and a resistive load in the DC-link. The loads are placed on land about 2 km east of the Lysekil wave energy research site, where the offshore experiments have been conducted. In the spring of 2009, another two wave energy converter prototypes were installed. Records of array operation were taken with two and three devices in the array. With two units, non-linear damping was used, and with three units, linear damping was employed. The point absorbers in the array are connected to the underwater substation, which is based on a 3 m3 pressure vessel standing on the seabed. In the substation, rectification of the frequency and amplitude modulated voltages from the linear generators is made. The DC voltage is smoothened by capacitors and inverted to 50 Hz electrical frequency, transformed and finally transmitted to the on-shore measuring station. Results show that the absorption is heavily dependent on the damping. It has also been shown that by increasing the damping, the standard deviation of electrical power can be reduced. The standard deviation of electrical power is reduced by array operation compared to single unit operation. Ongoing and future work include the construction and installation of a second underwater substation, which will connect the first substation and seven new WECs

  15. Alternative surfacing materials for weed control at BC Hydro substations

    International Nuclear Information System (INIS)

    Wells, T.C.; Shrimpton, G.M.

    1997-01-01

    A two year study was conducted by BC Hydro in which a variety of surfacing materials were tested for their suitability for use in substations. Ideally, surfacing materials should have the following characteristics: high electrical resistivity in both dry and wet conditions, resistance to invasion by weeds, good driveability, good drainage, non-flammable, reasonably priced, no dust to foul conductors, and be aesthetically pleasing. Trials at Vernon Koksilah, and Ingledow substations were conducted to test the materials. A qualitative estimate of the amount of weed control provided by each material was recorded. The trials were meant to provide operational recommendations and screening information to allow for future testing of promising materials or combination of materials. Results showed that no single material meets all the desired criteria. The surfaces that best combined good weed control, electrical resistance and surface stability was a 15 cm deep layer of crushed gravel, especially if underlain by a layer of geotextile. 4 refs., 3 tabs., 1 fig

  16. LIFE MANAGEMENT OF ASSET FROM HIGH VOLTAGE SUBSTATION

    Directory of Open Access Journals (Sweden)

    Sorina COSTINAŞ

    2010-11-01

    Full Text Available Companies have to reinvent continuously their business model. Maintenance can play a key role in the long-term profitability of a company. In Romania, especially since the liberalization of the energy market, the electrical companies are forced to identify and coordinate a lot of processes and to promote competitivity. It is necessary to work safety and be environmentally responsible in order to achieve electrical substations obiectives. In this paper will be presented maintenance strategy (replacement, upgrade or repair and informational aspects of decisional process (technical, financial, social politic, legal and risk aspects. Proposed methodology regarding the maintenance of electrical substation will be focused in how to improve the decisions for improving asset maintenance performance through ISO 9001/14001.

  17. MFTF 230 kV pulsed power substation

    International Nuclear Information System (INIS)

    Wilson, J.H.

    1979-01-01

    The Mirror Fusion Test Facility (MFTF) currently under construction at the Lawrence Livermore Laboratory includes a Sustaining Neutral Beam Power Supply System (SNBPSS) consisting of 24 power-supply sets. The System will operate in long pulses (initially .5 seconds and eventually 30 seconds) at high power (200 MW), which will necessitate a large source of ac power. To meet this requirement, a new 230-kV substation is also being built at LLL. The constraints of cost, equipment protection, short operating lifetime (10 years), and reliability dictated a unique substation design. Its unusual features include provisions for fast fault detection and tripping, a capability for limiting ground fault current, low impedance, and economical design

  18. Population Stabilization in India: A Sub-State level Analysis

    OpenAIRE

    Purohit C, Dr Brijesh

    2007-01-01

    The study aims at analyzing economic and policy factors impinging upon population stabilization measures at the district (sub-state level) in India. It reflects upon popularly debated notions, namely, that development is the best contraceptive or whether contraceptive is the best development. In order to reflect upon this notion, we hypothesize that the factors determining the success of population stabilization measures are likely to be different across rich and poor states. It is more likel...

  19. A Digital Power Quality Monitoring Equipment Designed for Digital Substation

    Science.gov (United States)

    Li, Wei; Wang, Xin; Geng, Jiewen

    2018-01-01

    Taking into account both current status and development trend of digital substation, this paper proposed a design of a new multi-channelled digital power quality monitoring equipment with high compatibility. The overall functional structure, hardware architecture, software architecture, interface architecture and some key techniques such as IEC 61850 modelling of transient event and harmonic measurement method under the condition of non-synchronous sampling are described in this paper.

  20. Seismic risk evaluation for high voltage air insulated substations

    International Nuclear Information System (INIS)

    Camensig, Carlo; Bresesti, Luca; Clementel, Stefano; Salvetti, Maurizio

    1997-01-01

    This paper describes the results of the analytical and experimental activities performed by ISMES for the evaluation of the structural reliability of electrical substations with respect to seismic events. In the following, the reference station is described along with the methods used to define the site seismic input, the analytical and experimental evaluation of the components' fragility curves and the whole station seismic risk evaluation

  1. Radio interference and transient field from gas-insulated substations

    International Nuclear Information System (INIS)

    Harvey, S.M.; Wong, P.S.; Balma, P.M.

    1995-01-01

    Gas-insulated substations (GIS), owing to their compact nature, offer an attractive alternative to conventional substations in areas where space is limited, such as in urban areas. Consequently, it is important to address the issue of environmental conditions within the substation and in the surrounding areas. This paper reports the result of radio interference (RI) and transient field measurements at two GIS in Ontario, Canada. For comparison with RI levels taken at the GIS, RI levels outside two hospitals in the Toronto area were also measured. The transient field study covers electromagnetic interference (EMI) levels generated during switching operations, and includes measurements inside and outside the GIS. Measurements show that RI levels from the GIS were either below background levels, or contributed little to the background. RI levels outside the GIS and the hospitals were similar. Peak transient field values up to 580 V/m were measured inside the station building, and dropped to background values of 10 V/m at about 120 m from the station. The transient field (E) dropped off at a rate of 3/2 power with distance (d) from the air-insulated 115 kV bus, i.e. E ∝ d -1.5

  2. Meeting the challenges of managing substation equipment assets

    Energy Technology Data Exchange (ETDEWEB)

    Shaver, J. [CEA Technologies (Canada)

    2005-06-01

    Best practices for monitoring and assessing substation equipment are discussed. Scheduled time-based maintenance is the most common, but recent evidence indicates that despite it being the most expensive, it may not always identify potential failures. The author recommends developing decision-making tools that take into account obsolescence, reliability, safety and environmental issues, as well as operating, repair and carrying costs, as absolutely necessary for consistent and intelligent decision-making. Given the high cost of research, the author recommends developing such tools through pooling of skills and collaboration with other utilities, as the preferred way to develop best practices. The Life Cycle Management of Substation Equipment and Apparatus Interest Group of CEA Technologies Inc is one such group that was formed to help utilities facilitate their research and technology development endeavours. The group's current focus is on developing equipment diagnostics and life optimization through the development of validation tools for predicting remaining life and/or extending life. Brief descriptions of these, and other completed project are given. Completed projects described include developing tools for predicting remaining life of transformers, power connectors and disconnect switches, safety protocol for restoration of substations involved with fires/explosions, and compiling a critical review of diagnostic instruments designed to assess transformer conditions.

  3. Seismic response and rehabilitation of critical substation equipment

    Energy Technology Data Exchange (ETDEWEB)

    Saadeghvaziri, M.A.; Allaverdi, N.H. [New Jersey Inst. of Technology, Newark, NJ (United States); Ashrafi, A. [Columbia Univ., New York, NY (United States); Ersoy, S. [Greenman-Pedersen Inc., Babylon, NY (United States)

    2004-07-01

    Substations are one of the most important components of an electrical power system. They provide protection to transmission and distribution lines and transfer power between different voltage levels. Transformers and bushings within the substation are vulnerable to earthquake ground motion. It is extremely important that electric power systems remain functional following seismic damage. This study assessed the seismic response of critical substation equipment and described advanced technologies for rehabilitation measures such as the Friction Pendulum System (FPS). It presents the results of an extensive finite element analysis on response of transformers and bushings. The objective was to determine the seismic behaviour of transformers and bushings during an earthquake and to determine the probability of different failure modes. The response of an FPS isolated transformer to different earthquakes was also examined along with FPS radii, ground motion intensity and vertical excitations. A finite element model was developed for FPS. The study showed that seismic isolation is a viable mitigation strategy, but a modest increase in slack must be provided. 15 refs., 1 tab., 12 figs.

  4. Insulation coordination workstation for AC and DC substations

    International Nuclear Information System (INIS)

    Booth, R.R.; Hileman, A.R.

    1990-01-01

    The Insulation Coordination Workstation was designed to aid the substation design engineer in the insulation coordination process. The workstation utilizes state of the art computer technology to present a set of tools necessary for substation insulation coordination, and to support the decision making process for all aspects of insulation coordination. The workstation is currently being developed for personal computers supporting OS/2 Presentation Manager. Modern Computer-Aided Software Engineering (CASE) technology was utilized to create an easily expandable framework which currently consists of four modules, each accessing a central application database. The heart of the workstation is a library of user-friendly application programs for the calculation of important voltage stresses used for the evaluation of insulation coordination. The Oneline Diagram is a graphic interface for data entry into the EPRI distributed EMTP program, which allows the creation of complex systems on the CRT screen using simple mouse clicks and keyboard entries. Station shielding is graphically represented in the Geographic Viewport using a three-dimensional substation model, and the interactive plotting package allows plotting of EPRI EMTP output results on the CRT screen, printer, or pen plotter. The Insulation Coordination Workstation was designed by Advanced Systems Technology (AST), a division of ABB Power Systems, Inc., and sponsored by the Electric Power Research Institute under RP 2323-5, AC/DC Insulation Coordination Workstation

  5. Fault Current Distribution and Pole Earth Potential Rise (EPR) Under Substation Fault

    Science.gov (United States)

    Nnassereddine, M.; Rizk, J.; Hellany, A.; Nagrial, M.

    2013-09-01

    New high-voltage (HV) substations are fed by transmission lines. The position of these lines necessitates earthing design to ensure safety compliance of the system. Conductive structures such as steel or concrete poles are widely used in HV transmission mains. The earth potential rise (EPR) generated by a fault at the substation could result in an unsafe condition. This article discusses EPR based on substation fault. The pole EPR assessment under substation fault is assessed with and without mutual impedance consideration. Split factor determination with and without the mutual impedance of the line is also discussed. Furthermore, a simplified formula to compute the pole grid current under substation fault is included. Also, it includes the introduction of the n factor which determines the number of poles that required earthing assessments under substation fault. A case study is shown.

  6. Substation interference on gas entrance of industrial plants

    Energy Technology Data Exchange (ETDEWEB)

    Freire, Paulo Edmundo; Giacommelo, Claudinei [PAIOL Engenharia, Paulinia, SP (Brazil)

    2009-12-19

    Industrial plants often have medium or high voltage electrical power entrance and also gas feeders. Often the main substation is located near the gas entrance, in the utilities area. When the occurrence of a phase to ground short-circuit in the substation, the pipeline and gas entrance that serves the plant may be exposed to high voltage soil potential, of the order of a few kilovolts, due to resistive coupling with the substation ground mesh. The consequences of this situation are reflected in various risks, with emphasis on: damage to the protective coating of the duct, due to the increased soil potential, in excess of its dielectric supportability (typically on the order of 5 kV); spread of potentially hazardous to duct exposed parts (valves, measuring place etc.); and damage to cathodic protection system components, as rectifier and insulating joins at gas entrance. This paper presents the investigations conducted in a factory that has a 69 kV main substation very close to the gas entrance, the order of a few meters away. The substation phase to ground short-circuit current is 7 kA, what causes a 9 kV soil potential near the gas pipe. It is presented the methodology for modeling the various elements involved in this process, the results of simulations made, arrangements been taken to reduce soil potential next to the duct to levels below 5 kV, and the measures for people and insulating joins protection. It is important to note that such problems usually will be solved with measures involving the entire grounding system of the industrial complex and also close to the duct (outside the industrial plant). The gas distribution companies should require from customers where this situation occurs, to ensure safety for people who have access to elements of its network, and for the integrity of their own ducts and cathodic protection components. The computer simulations developed for this work were made with the software Auto Grid, developed by the Canadian company Safe

  7. Funciones expresivas (comportamiento motor y lenguaje), comportamiento emocional y funciones ejecutivas en la discapacidad intelectual

    OpenAIRE

    Grau Rubio, Claudia

    2006-01-01

    Se describen las bases neurológicas del comportamiento motor, lenguaje, funciones ejecutivas y comportamiento emocional en las personas con discapacidad intelectual; las dificultades asociadas y cómo se puede intervenir.

  8. Aproveitamento teórico-prático da disciplina anatomia humana do curso de fisioterapia

    Directory of Open Access Journals (Sweden)

    Rodrigo Moreira Arruda

    Full Text Available A Anatomia Humana estuda as estruturas do corpo humano e as relações entre elas. Assim, seu ensino a estudantes da área da saúde, incluindo alunos de Fisioterapia, é de extrema importância. É necessário um bom aproveitamento nesta disciplina para se tornar um bom profissional, porém as estratégias de ensino-aprendizagem nesta disciplina têm sido bastante discutidas. Com base nesta premissa, este estudo teve por objetivos avaliar o aproveitamento teórico-prático dos discentes do curso de Fisioterapia na disciplina Anatomia Humana, bem como descrever as facilidades e dificuldades enfrentadas e suas implicações durante o curso. Para tanto, foi elaborado um questionário específico e utilizada também a avaliação dos professores realizada pelo Colegiado de Fisioterapia. O tratamento estatístico foi composto por análise descritiva e correlação de Pearson, sendo os dados analisados pelos programas Microsoft Excel® 2007 e Graphpad Prism®. Não se observou correlação entre desempenho do aluno e grau de satisfação diante de diferentes parâmetros analisados neste trabalho. O estudo revelou que os alunos apresentam aproveitamento satisfatório, mas há grandes insatisfações quanto à forma como a disciplina é conduzida.

  9. Implementation and design of a communication system of an agent-based automated substation

    Institute of Scientific and Technical Information of China (English)

    LIN Yong-jun; LIU Yu-tao; ZHANG Dan-hui

    2006-01-01

    A substation system requires that communication be transmitted reliably,accurately and in real-time.Aimed at solving problems,e.g.,flow confliction and sensitive data transmission,a model of the communication system of an agent-based automated substation is introduced.The running principle is discussed in detail and each type of agent is discussed further.At the end,the realization of the agent system applied to the substation is presented.The outcome shows that the communication system of an agent-based automated substation improves the accuracy and reliability of the data transfer and presents it in realtime.

  10. Aproveitamento de águas de chuva por telhados: aspectos quantitativos e qualitativos

    OpenAIRE

    Farias, Maria Mariah Monteiro Wanderley Estanislau Costa de

    2012-01-01

    Nos últimos anos tem-se observado, em várias localidades, um crescimento populacional acelerado. A maior parte da população vive em áreas urbanas e enfrenta diversos problemas relacionados ao abastecimento precário de água e à ocorrência de eventos extremos, tais como estiagem prolongada e enchentes. Nesse contexto, se insere o aproveitamento de águas de chuva, que deverão ser captadas e acumuladas em reservatórios, de modo que a mesma possa ser consumida, de imediato ou após algum tempo, em ...

  11. New conceptual design for offshore wind power substations

    International Nuclear Information System (INIS)

    2016-01-01

    The presentation of the new offshore wind power substation project, Marin-el, took place last December at an event held at the Higher School of Naval Engineering (ETSIN), part of the Universidad Politécnica de Madrid (UPM). The project is headed up by Iberdrola and backed by the Government of the Basque Country with a project consortium featuring the participation of the Tecnalia technological centre and the Construcciones Navales del Norte (La Naval) shipyard among other firms from the naval and renewable energies sectors. (Author)

  12. Aproveitamento Integral de Alimentos e o seu Impacto na Saúde

    Directory of Open Access Journals (Sweden)

    Fabiane Toste Cardoso

    2015-12-01

    Full Text Available A fome e o desperdício de alimentos são dois grandes problemas enfrentados pelo Brasil, constituindo-se em um dos paradoxos do país, que é um dos maiores exportadores de alimentos e, também, campeão em desperdício. Este estudo aborda a importância do aproveitamento integral dos alimentos e a sua relação com a saúde das pessoas e do ambiente em que vivem, a partir da análise de estudos publicados anteriormente. Após a análise dos dados constantes nos estudos, concluiu-se que os resíduos alimentares desperdiçados podem ser utilizados para o desenvolvimento de ações que visem minorar a fome e a desnutrição, por meio do desenvolvimento de receitas nutritivas e de fácil manuseio, em nível doméstico, pelas famílias. Além disso, o aproveitamento integral dos alimentos poderá contribuir para a redução da produção de resíduos alimentares, com vistas a minimizar o impacto ambiental causado por tais resíduos.

  13. Aproveitamento de Água de Chuva em unidades Educacionais do Rio Grande do Norte, Brasil

    Directory of Open Access Journals (Sweden)

    Xaila Sant Anna Amaral

    2017-12-01

    Full Text Available Com este estudo objetivou-se avaliar os sistemas de aproveitamento de água de chuva em unidades educacionais do Rio Grande do Norte. Inicialmente, foi realizado um levantamento de informações sobre os sistemas de aproveitamento de água de chuva dos campi do IFRN. Em seguida, os campi foram visitados para validação das informações colhidas e verificação de outros elementos pertinentes (áreas da superfície de captação, tipos e volumes de reservatórios, estado físico das instalações, condições operacionais e destino da água armazenada. Posteriormente, 4 unidades educacionais foram selecionadas e monitoradas mensalmente entre março e setembro de 2014 a fim de caracterizar a água de chuva armazenada, físico-química e microbiologicamente. Os resultados revelam que a água armazenada apresentou qualidade compatível para irrigação de áreas verdes, apesar de descuidos operacionais e sanitários. Conclui-se que sistemas de captação e armazenamento podem compatibilizar o uso racional, eficiente e sanitário da água de chuva no Semiárido brasileiro.

  14. APROVEITAMENTO, CAPTAÇÃO E (RE USO DAS ÁGUAS PLUVIAIS NA ARQUITETURA

    Directory of Open Access Journals (Sweden)

    Melhores Trabalhos .

    2015-02-01

    Full Text Available O presente artigo tem a intenção de abordar a captação e o (re uso das águas pluviais com ênfase na arquitetura sustentável, tendo como finalidade básica a conscientização do consumo exagerado de água potável. O aproveitamento da água da chuva é uma das alternativas principais para a redução da escassez da água, conservação dos lençóis freáticos e para a colaboração no sistema de drenagem urbana. Dessa forma, a pesquisa apresentará informações referentes às várias formas e sistemas de captação de água pluvial no intuito de fortalecer a responsabilidade ambiental e social de cada usuário junto ao meio ambiente através de alternativas arquitetônicas eficientes no aproveitamento dessas águas.

  15. sócio-funcional em idosos

    Directory of Open Access Journals (Sweden)

    Francielli Brito da Fonseca

    2008-01-01

    Full Text Available Se trata de una investigación realizada con el objetivo de construir un instrumento de evaluación para ancianos. La investigación fue desarrollada entre marzo y septiembre de 2007, por medio de la revisión de literatura, identificación y análisis de diversos instrumentos/escalas propuestos para la evaluación funcional. A partir del análisis de nueve escalas, se construyó el Instrumento de Evaluación Socio-funcional en Ancianos, que se compone de dos partes: la primera, cuyo objetivo es obtener datos de identificación, representación del estado de salud y desempeño social de los ancianos; la segunda busca realizar la evaluación funcional propiamente dicha. El instrumento fue evaluado por cuatro jueces y después fue aplicado a diez ancianos con diversos grados de dependencia. Se reveló de fácil aplicación y útil en la identificación de los factores que intervienen en la salud de la persona anciana, así como, en la evaluación del grado de dependencia, ofreciendo subsidios para la planificación del trabajo en salud y asistencia a los ancianos.

  16. Simulation study on the lightning overvoltage invasion control transformer intelligent substation

    Science.gov (United States)

    Xi, Chuyan; Hao, Jie; Zhang, Ying

    2018-04-01

    By simulating lightning on substation line of one intelligent substation, research the influence of different lightning points on lightning invasion wave overvoltage, and the necessity of arrester for the main transformer. The results show, in a certain lightning protection measures, the installation of arrester nearby the main transformer can effectively reduce the overvoltage value of bus and the main transformer [1].

  17. 30 CFR 77.811 - Movement of portable substations and transformers.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Movement of portable substations and transformers. 77.811 Section 77.811 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF... OF UNDERGROUND COAL MINES Surface High-Voltage Distribution § 77.811 Movement of portable substations...

  18. The San Bernabe power substation; La subestacion San Bernabe

    Energy Technology Data Exchange (ETDEWEB)

    Chavez Sanudo, Andres D. [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

    1997-12-31

    The first planning studies that gave rise to the San Bernabe substation go back to year 1985. The main circumstance that supports this decision is the gradual restriction for electric power generation that has been suffering the Miguel Aleman Hydro System, until its complete disappearance, to give priority to the potable water supply through the Cutzamala pumping system, that feeds in an important way Mexico City and the State of Mexico. In this document the author describes the construction project of the San Bernabe Substation; mention is made of the technological experiences obtained during the construction and its geographical location is shown, as well as the one line diagram of the same [Espanol] Los primeros estudios de planeacion que dieron origen a la subestacion San Bernabe se remontan al ano de 1985. La circunstancia principal que soporta esta decision es la restriccion paulatina para generar energia que ha venido experimentando el Sistema Hidroelectrico Miguel Aleman, hasta su desaparicion total, para dar prioridad al suministro de agua potable por medio del sistema de bombeo Cutzamala, que alimenta en forma importante a la Ciudad de Mexico y al Estado de Mexico. En este documento el autor describe el proyecto de construccion de la subestacion San Bernabe; se mencionan las experiencias tecnologicas obtenidas durante su construccion y se ilustra su ubicacion geografica, asi como un diagrama unifilar de la misma

  19. Development of Protection and Control Unit for Distribution Substation

    Science.gov (United States)

    Iguchi, Fumiaki; Hayashi, Hideyuki; Takeuchi, Motohiro; Kido, Mitsuyasu; Kobayashi, Takashi; Yanaoka, Atsushi

    The Recently, electronics and IT technologies have been rapidly innovated and have been introduced to power system protection & control system to achieve high reliability, maintainability and more functionality. Concerning the distribution substation application, digital relays have been applied for more than 10 years. Because of a number of electronic devices used for it, product cost becomes higher. Also, products installed during the past high-growth period will be at the end of lifetime and will be replaced. Therefore, replacing market is expected to grow and the reduction of cost is demanded. Considering above mentioned background, second generation digital protection and control unit as a successor is designed to have following concepts. Functional integration based on advanced digital technologies, Ethernet LAN based indoor communication network, cost reduction and downsizing. Pondering above concepts, integration of protection and control function is adopted in contrary to the functional segregation applied to the previous system in order to achieve one-unit concept. Also the adoption of Ethernet LAN for inter-unit communication is objective. This report shows the development of second-generation digital relay for distribution substation, which is equipped with control function and Ethernet LAN by reducing the size of auxiliary transformer unit and the same size as previous product is realized.

  20. On-rail solution for autonomous inspections in electrical substations

    Science.gov (United States)

    Silva, Bruno P. A.; Ferreira, Rafael A. M.; Gomes, Selson C.; Calado, Flavio A. R.; Andrade, Roberto M.; Porto, Matheus P.

    2018-05-01

    This work presents an alternative solution for autonomous inspections in electrical substations. The autonomous system is a robot that moves on rails, collects infrared and visible images of selected targets, also processes the data and predicts the components lifetime. The robot moves on rails to overcome difficulties found in not paved substations commonly encountered in Brazil. We take advantage of using rails to convey the data by them, minimizing the electromagnetic interference, and at the same time transmitting electrical energy to feed the autonomous system. As part of the quality control process, we compared thermographic inspections made by the robot with inspections made by a trained thermographer using a scientific camera Flir® SC660. The results have shown that the robot achieved satisfactory results, identifying components and measuring temperature accurately. The embodied routine considers the weather changes along the day, providing a standard result of the components thermal response, also gives the uncertainty of temperature measurement, contributing to the quality in the decision making process.

  1. An application of data mining in district heating substations for improving energy performance

    Science.gov (United States)

    Xue, Puning; Zhou, Zhigang; Chen, Xin; Liu, Jing

    2017-11-01

    Automatic meter reading system is capable of collecting and storing a huge number of district heating (DH) data. However, the data obtained are rarely fully utilized. Data mining is a promising technology to discover potential interesting knowledge from vast data. This paper applies data mining methods to analyse the massive data for improving energy performance of DH substation. The technical approach contains three steps: data selection, cluster analysis and association rule mining (ARM). Two-heating-season data of a substation are used for case study. Cluster analysis identifies six distinct heating patterns based on the primary heat of the substation. ARM reveals that secondary pressure difference and secondary flow rate have a strong correlation. Using the discovered rules, a fault occurring in remote flow meter installed at secondary network is detected accurately. The application demonstrates that data mining techniques can effectively extrapolate potential useful knowledge to better understand substation operation strategies and improve substation energy performance.

  2. Decentralized substations for low-temperature district heating with no Legionella risk, and low return temperatures

    DEFF Research Database (Denmark)

    Yang, Xiaochen; Li, Hongwei; Svendsen, Svend

    2016-01-01

    . From the results, realizing LTDH by the decentralized substation unit, 30% of the annual distribution heat loss inside the building can be saved compared to a conventional system with medium-temperature district heating. Replacing the bypass pipe with an in-line supply pipe and a heat pump...... with domestic hot water (DHW) circulation. In this study, a system with decentralized substations was analysed as a solution to this problem. Furthermore, a modification for the decentralized substation system were proposed in order to reduce the average return temperature. Models of conventional system...... with medium-temperature district heating, decentralized substation system with LTDH, and innovative decentralized substation system with LTDH were built based on the information of a case building. The annual distribution heat loss and the operating costs of the three scenarios were calculated and compared...

  3. IEC 61850: integrating substation automation into the power plant control system; IEC 61850: Integration der Schaltanlagenautomatisierung in die Kraftwerksleittechnik

    Energy Technology Data Exchange (ETDEWEB)

    Orth, J. [ABB AG, Mannheim (Germany)

    2008-07-01

    The new communication standard IEC 61850 has been developed in the substation automation domain and was released 2004 as a worldwide standard. Meanwhile IEC 61850 is already established in many substation automation markets. The paper discusses the implementation of IEC 61850 integrating process control and substation automation into one consistent system in a power plant. (orig.)

  4. APROVEITAMENTO, CAPTAÇÃO E (RE) USO DAS ÁGUAS PLUVIAIS NA ARQUITETURA

    OpenAIRE

    Melhores Trabalhos .

    2015-01-01

    O presente artigo tem a intenção de abordar a captação e o (re) uso das águas pluviais com ênfase na arquitetura sustentável, tendo como finalidade básica a conscientização do consumo exagerado de água potável. O aproveitamento da água da chuva é uma das alternativas principais para a redução da escassez da água, conservação dos lençóis freáticos e para a colaboração no sistema de drenagem urbana. Dessa forma, a pesquisa apresentará informações referentes às várias formas e sistemas de captaç...

  5. ¿Discapacidad o diversidad funcional?

    Directory of Open Access Journals (Sweden)

    Joan CANIMAS BRUGUÉ

    2015-12-01

    Full Text Available Hasta hoy disponemos de tres paradigmas para pensar lo que aún llamamos discapacidad: el médico, el social y el biopsicosocial (que ha intentado integrar y superar la confrontación entre los dos primeros. El Foro de Vida Independiente (FVI y los autores y activistas que ayudan a profundizar y a extender sus propuestas celebran el avance que ha supuesto el paradigma biopsicosocial, pero no lo comparten y proponen un nuevo modelo que llaman de la diversidad funcional, una versión hermenéutica del paradigma social. Este artículo intenta identificar los problemas que el modelo de la diversidad funcional plantea a la ética aplicada, y se centra en dos de ellos. El primero es: si lo que ahora consideramos deficiencia es interpretado únicamente como diversidad, ¿qué argumentos tendríamos para no respetar la decisión de unos padres de no corregir una deficiencia física, intelectual o del desarrollo de sus hijos, pudiéndolo hacer con una terapia eficaz, razonable y sin riesgos? ¿Y para impedir que les produzcan una deficiencia? El segundo problema es: ¿Cómo justificar la necesidad de discriminación positiva (más recursos y atenciones y más investigación médica y tecnológica a las personas con diversidad funcional e incluso de apoyo, si se considera que su manera de funcionar no es ni mejor ni peor que las otras?

  6. Interdependencia Funcional de la Crianza Positiva Materna

    OpenAIRE

    Gaxiola Romero, José Concepción; Universidad de Sonora; Gaxiola Villa, Eunice; Frías Armenta, Martha

    2017-01-01

    Según la teoría del desarrollo de la psicopatología, algunas trayectorias del desarrollo resultan en adaptación, otras en psicopatología. Nuestra hipótesis es que algunas variables positivas son funcionales a la adaptación psicológica y participan en nicho adaptativos, que son contextos donde regularmente encontramos las competencias adaptativas, como el estilo de crianza positivo materno. El objetivo del estudio fue probar en un modelo de trayectorias, la interdependencia funcional del estil...

  7. Seguridad funcional de sensores de gas

    OpenAIRE

    Vega Remesal, Ángel; Medic Pejic, Ljiljana; Garcia Torrent, Javier

    2013-01-01

    La protección adecuada de los equipos o sistemas que han de trabajar en atmósferas potencialmente explosivas no es suficiente cuando se trata de la seguridad frente a posibles explosiones o a la prevención de potenciales riesgos directos de las personas, en cuyo caso deben estar amparados también por la llamada seguridad funcional que exige una serie de requisitos adicionales, cuya documentación debe proporcionar el fabricante de los equipos, junto con su manual de instrucciones.

  8. Funciones sociales del consumo: un caso extremo

    OpenAIRE

    JOSÉ CASTILLO CASTILLO

    1994-01-01

    El consumo religioso de reliquías de santos durante la edad media cumple semejantes funciones sociales para su época que el consumo economico de objetos para la nuestra: El de reforzar real y simbólicamente las estructuras de prestigio, riqueza y poder de sus respectivas sociedades. El ámbito de la sociología del consumo no se circunscribe a los estrechos límites de las llamadas sociedades de consumo de masas. en el presente caso, el estudio del pasado ilumina procesos sociales propios de nue...

  9. Funciones sociales del consumo: un caso extremo

    Directory of Open Access Journals (Sweden)

    JOSÉ CASTILLO CASTILLO

    1994-01-01

    Full Text Available El consumo religioso de reliquías de santos durante la edad media cumple semejantes funciones sociales para su época que el consumo economico de objetos para la nuestra: El de reforzar real y simbólicamente las estructuras de prestigio, riqueza y poder de sus respectivas sociedades. El ámbito de la sociología del consumo no se circunscribe a los estrechos límites de las llamadas sociedades de consumo de masas. en el presente caso, el estudio del pasado ilumina procesos sociales propios de nuestros días.

  10. Canby Area Service Project substation and associated transmission line. Environmental Assessment

    Energy Technology Data Exchange (ETDEWEB)

    1992-02-01

    Bonneville Power Administration (BPA) provides power to Surprise Valley Electrification Corporation (SVEC) in Modoc County, California. BPA uses PacificCorp`s substation and transmission facilities between Alturas and Canby, California to transfer power to SVEC`s Canby Substation. In the next year, SVEC expects increased industrial, agricultural, and residential electric loads on their 69-kV transmission system south of Canby. SVEC`s substation can accommodate only about 10 percent of the expected additional electric load. BPA`s proposed action is intended to meet SVEC`s increasing electric load. BPA proposes to meet SVEC`s increasing energy load by tapping into BPA`s existing BPA Malin-Warner 230-kV transmission line, and building an 7.9-mile transmission line to a new BPA substation. BPA proposes to build the new substation next to the west side of SVEC`s Canby Substation (Figure 1). This new substation will allow SVEC to move the additional power over their existing transmission or distribution lines. This report is the environmental assessment of the potential impact of the proposed project. The assessment determined that no ``environmental impact statement`` is not required.

  11. Canby Area Service Project : Substation and Associated Transmission Line : Environmental Assessment.

    Energy Technology Data Exchange (ETDEWEB)

    United States. Bonneville Power Administration.

    1992-02-01

    Bonneville Power Administration (BPA) provides power to Surprise Valley Electrification Corporation (SVEC) in Modoc County, California. BPA uses PacificCorp's substation and transmission facilities between Alturas and Canby, California to transfer power to SVEC's Canby Substation. In the next year, SVEC expects increased industrial, agricultural, and residential electric loads on their 69-kV transmission system south of Canby. SVEC's substation can accommodate only about 10 percent of the expected additional electric load. BPA's proposed action is intended to meet SVEC's increasing electric load. BPA proposes to meet SVEC's increasing energy load by tapping into BPA's existing BPA Malin-Warner 230-kV transmission line, and building an 7.9-mile transmission line to a new BPA substation. BPA proposes to build the new substation next to the west side of SVEC's Canby Substation (Figure 1). This new substation will allow SVEC to move the additional power over their existing transmission or distribution lines. This report is the environmental assessment of the potential impact of the proposed project. The assessment determined that no environmental impact statement'' is not required.

  12. Expert systems in power substation operation and control

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Guilherme Moutinho; Lambert-Torres, Germano; Silva, Alexandre P. Alves da [Escola Federal de Engenharia de Itajuba, MG (Brazil)

    1994-12-31

    With digital technology being increasingly adopted in power substations (SE), perspectives are created for integration of supervision, control and protection systems in addition to making its process automation feasible. Once a SE is digitalized, the systems which previously were implemented physically will be able to be implemented by means of computer programs (software), allowing the expansion of its scope of operation. Studies and research performed at the international level have pointed to the utilization of Expert Systems (ES) as a more suitable alternative for representation and solution of the operation and control problems, especially those which do not have an established theory, which are provided with diagnosis characteristics and that associate themselves with fuzzy data and information. (author) 4 refs., 3 figs.

  13. Decentralized substations for low-temperature district heating with no Legionella risk, and low return temperatures

    International Nuclear Information System (INIS)

    Yang, Xiaochen; Li, Hongwei; Svendsen, Svend

    2016-01-01

    To improve energy efficiency and give more access to renewable energy sources, low-temperature district heating (LTDH) is a promising concept to be realized in the future. However, concern about Legionella proliferation restricts applying low-temperature district heating in conventional systems with domestic hot water (DHW) circulation. In this study, a system with decentralized substations was analysed as a solution to this problem. Furthermore, a modification for the decentralized substation system were proposed in order to reduce the average return temperature. Models of conventional system with medium-temperature district heating, decentralized substation system with LTDH, and innovative decentralized substation system with LTDH were built based on the information of a case building. The annual distribution heat loss and the operating costs of the three scenarios were calculated and compared. From the results, realizing LTDH by the decentralized substation unit, 30% of the annual distribution heat loss inside the building can be saved compared to a conventional system with medium-temperature district heating. Replacing the bypass pipe with an in-line supply pipe and a heat pump, the innovative decentralized substation system can reduce distribution heat loss by 39% compared to the conventional system and by 12% compared to the normal decentralized substation system with bypass. - Highlights: • The system of decentralized substations can realize low-temperature district heating without running the risk of Legionella. • Decentralized substations help reduce the distribution heat loss inside the building compared to conventional system. • A new concept that can reduce the return temperature for district heating is proposed and analysed.

  14. A novel approach to verify the influence of atmospheric parameters in substations concerning lightning

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Andre Nunes de; Silva, Ivan Nunes da; Ulson, Jose Alfredo C.; Zago, Maria Goretti [UNESP, Bauru, SP (Brazil). Dept. de Engenharia Eletrica]. E-mail: andrejau@bauru.unesp.br

    2001-07-01

    This paper demonstrates that artificial neural networks can be used effectively for estimation of parameters related to study of atmospheric conditions to high voltage substations design. Specifically, the neural networks are used to compute the variation of electrical field intensity and critical disruptive voltage in substations taking into account several atmospheric factors, such as pressure, temperature, humidity. Examples of simulation of tests are presented to validate the proposed approach. The results that were obtained by experimental evidences and numerical simulations allowed the verification of the influence of the atmospheric conditions on design of substations concerning lightning. (author)

  15. APROVEITAMENTO DA SEMENTE DE AÇAÍ PARA PRODUÇÃO DE BEBIDA À BASE DE CAFÉ

    OpenAIRE

    Lara Santana Fernandes; UFV; Bruna Giaretta Martins; UFV; Juliana Lane Paixão; UFV; Lara Stela Mendes Lustoza; UFV; Daniel Mariano Leite; UFV

    2011-01-01

    O aproveitamento da semente de açaí em bebida à base de café é uma alternativa para a redução do impacto ambiental e para a agregação de valor ao resíduo da agroindústria de açaí. Objetivou–se com a condução do presente trabalho avaliar o aproveitamento da semente de açaí, subproduto do beneficiamento dos frutos, para a produção de uma bebida à base de café e semente de açaí. Foram feitas a torrefação e moagem da semente de açaí e de grãos de café, tendo sido analisada sensorialmente a beb...

  16. Flow and heat distribution analysis of different transformer sub-stations

    International Nuclear Information System (INIS)

    Hasini, H; Shuaib, N H; Yogendran, S B; Toh, K B

    2013-01-01

    This paper describes CFD investigation on the flow and heat transfer in transformers at different sub-station buildings. The analysis aimed to determine the cooling capability of the existing transformer building employing natural ventilation system to dissipate heat sufficiently when new dry-type transformer operating under full load condition is used. The transformer and building models were developed based on the actual transformer configuration in operation at three different locations in Malaysia. The calculation was carried out on three different types of sub-stations namely stand-alone, attach-to-building and underground. The effect of natural ventilation speed and building volume on the transformer surfaces temperature are also investigated. It was predicted that the existing sub-station configuration is able to dissipate heat produced from the dry type transformer by using its natural ventilation system regardless of the sub-station types. However, the smallest building case shows relatively high surrounding temperature

  17. 30 CFR 56.4130 - Electric substations and liquid storage facilities.

    Science.gov (United States)

    2010-07-01

    ... LABOR METAL AND NONMETAL MINE SAFETY AND HEALTH SAFETY AND HEALTH STANDARDS-SURFACE METAL AND NONMETAL MINES Fire Prevention and Control Prohibitions/precautions/housekeeping § 56.4130 Electric substations...

  18. Perspective loads of transformer substations at development of urban power supply systems

    Directory of Open Access Journals (Sweden)

    Svetlana Guseva

    2012-06-01

    Full Text Available In work the system approach to formation of the urban power supply system is given. The hierarchical structure of the construction, voltage levels and load densities is considered. The mathematical and geometrical modeling of service areas for transformer substations of diff erent voltage is fulfi lled. Determination of perspective loads of transformer substations is given. The method of graphic placement of transformer substations in the city territory for new substations at existing structure of networks is off ered. The calculation program Microsoft EXCEL and the graphic program AutoCad are used for realization of method. The method allows fi nding a rational decision for the development of urban power supply system on the beginning design stages in conditions of the information uncertainty.

  19. optimization design of ground grid mesh of 132/33kv substation

    African Journals Online (AJOL)

    user

    INTRODUCTION. Grounding system for transmission substation is very ... drop will occur in mesh which will result in rise of mesh potentials ... minimize the effectiveness of transient voltage. ..... and Grounding in HC and LV Distribution System,.

  20. Fatores determinantes da capacidade funcional entre idosos

    Directory of Open Access Journals (Sweden)

    Tereza Etsuko da Costa Rosa

    2003-02-01

    Full Text Available OBJETIVO; Investigar a influência de fatores socioeconômicos e demográficos relativos à saúde, bem como os fatores ligados às atividades sociais e à avaliação subjetiva da saúde sobre a capacidade funcional dos idosos. MÉTODOS: Estudo transversal, integrante de estudo multicêntrico, em amostra representativa do município de São Paulo, realizado em 1989. A capacidade funcional foi avaliada através da escala de atividades da vida diária pessoal e instrumental e investigada como variável dicotômica: ausência de dependência - incapacidade/dificuldade em nenhuma das atividades versus presença de dependência moderada/grave - incapacidade/dificuldade em 4 ou mais atividades. Análise de regressão logística múltipla foi aplicada aos fatores hierarquicamente agrupados. RESULTADOS: As características que se associaram com a dependência moderada/grave foram analfabetismo, ser aposentado, ser pensionista, ser dona de casa, não ser proprietário da moradia, ter mais de 65 anos, ter composição familiar multigeracional, ter sido internado nos últimos 6 meses, ser "caso" no rastreamento de saúde mental, não visitar amigos, ter problemas de visão, ter história de derrame, não visitar parentes e ter avaliação pessimista da saúde ao se comparar com seus pares. CONCLUSÕES: As características identificadas que se associaram à dependência moderada/grave sugerem uma complexa rede causal do declínio da capacidade funcional. Pode-se supor, entretanto, que ações preventivas especificamente voltadas para certos fatores podem propiciar benefícios para o prolongamento do bem estar da população idosa.

  1. Fatores determinantes da capacidade funcional entre idosos

    Directory of Open Access Journals (Sweden)

    Rosa Tereza Etsuko da Costa

    2003-01-01

    Full Text Available OBJETIVO; Investigar a influência de fatores socioeconômicos e demográficos relativos à saúde, bem como os fatores ligados às atividades sociais e à avaliação subjetiva da saúde sobre a capacidade funcional dos idosos. MÉTODOS: Estudo transversal, integrante de estudo multicêntrico, em amostra representativa do município de São Paulo, realizado em 1989. A capacidade funcional foi avaliada através da escala de atividades da vida diária pessoal e instrumental e investigada como variável dicotômica: ausência de dependência - incapacidade/dificuldade em nenhuma das atividades versus presença de dependência moderada/grave - incapacidade/dificuldade em 4 ou mais atividades. Análise de regressão logística múltipla foi aplicada aos fatores hierarquicamente agrupados. RESULTADOS: As características que se associaram com a dependência moderada/grave foram analfabetismo, ser aposentado, ser pensionista, ser dona de casa, não ser proprietário da moradia, ter mais de 65 anos, ter composição familiar multigeracional, ter sido internado nos últimos 6 meses, ser "caso" no rastreamento de saúde mental, não visitar amigos, ter problemas de visão, ter história de derrame, não visitar parentes e ter avaliação pessimista da saúde ao se comparar com seus pares. CONCLUSÕES: As características identificadas que se associaram à dependência moderada/grave sugerem uma complexa rede causal do declínio da capacidade funcional. Pode-se supor, entretanto, que ações preventivas especificamente voltadas para certos fatores podem propiciar benefícios para o prolongamento do bem estar da população idosa.

  2. Entrenamiento Cognitivo de las Funciones Ejecutivas en la Edad Escolar

    Directory of Open Access Journals (Sweden)

    María Luisa Betancur-Caro

    2016-02-01

    Full Text Available En este artículo nuestro objetivo es evaluar y analizar el Rendimiento Académico de un niño en edad escolar a partir de un programa de entrenamiento cognitivo de las Funciones Ejecutivas. Realizamos el estudio de caso en tres momentos: evaluación inicial pretest con subpruebas de la Banfe y la ENI; identificamos el estado de las funciones ejecutivas, el entrenamiento cognitivo del Control Inhibitorio, la Fluidez y la Planeación, y la evaluación final postest con el mismo repertorio de la evaluación inicial, a fin de identificar los logros del entrenamiento cognitivo sobre las funciones ejecutivas y el rendimiento académico. Resultados y conclusiones: El entrenamiento cognitivo favoreció las funciones ejecutivas estimuladas; sin embargo, no logramos demostrar una relación concluyente entre las funciones ejecutivas y el rendimiento académico.

  3. Entrenamiento Cognitivo de las Funciones Ejecutivas en la Edad Escolar

    Directory of Open Access Journals (Sweden)

    María Luisa Betancur-Caro

    2016-01-01

    Full Text Available En este artículo nuestro objetivo es evaluar y analizar el Rendimiento Académico de un niño en edad escolar a partir de un programa de entrenamiento cognitivo de las Funciones Ejecutivas. Realizamos el estudio de caso en tres momentos: evaluación inicial pretest con subpruebas de la Banfe y la ENI; identificamos el estado de las funciones ejecutivas, el entrenamiento cognitivo del Control Inhibitorio, la Fluidez y la Planeación, y la evaluación final postest con el mismo repertorio de la evaluación inicial, a fin de identificar los logros del entrenamiento cognitivo sobre las funciones ejecutivas y el rendimiento académico. Resultados y conclusiones: El entrenamiento cognitivo favoreció las funciones ejecutivas estimuladas; sin embargo, no logramos demostrar una relación concluyente entre las funciones ejecutivas y el rendimiento académico.

  4. The environmental evaluation of substation based on the fuzzy analytic hierarchy process

    Science.gov (United States)

    Qian, Wenxiao; Zuo, Xiujiang; Chen, Yuandong; Ye, Ming; Fang, Zhankai; Yang, Fan

    2018-02-01

    This paper studies on the different influences on the environment of the substations and puts forward an index system of environmental protection through the fuzzy analytic hierarchy process. A comprehensive environmental evaluation on a substation is carried out through investigation and measurement of the current environmental factors, and the statistical data has validated the effectiveness and feasibility of this evaluation index system. The results indicate that the proposed model has high efficiency.

  5. Static Electricity as Part of Electromagnetic Environment on High-Voltage Electrical Substation

    Directory of Open Access Journals (Sweden)

    M. I. Fursanov

    2012-01-01

    Full Text Available Causes of occurrences electrostatic discharges (ESD on high-voltage electric substation were investigated and dependences values ESD’s on parameters interaction structures, humidity of air were found. Experimental research values ESD’s on high-voltage electric substation and in man-made conditions was fulfilled. Uncertainty measurement’s was taken into consideration by research results analyze. Matching with research of other authors was made. Danger ESD’s for electric devises was established.

  6. Rural electrification in Chihuahua, Mexico at one third of the cost vs a conventional substation

    Energy Technology Data Exchange (ETDEWEB)

    Ramirez, Omar; Gomez, Rolando; Solano, Arturo; Acosta, Eduardo

    2010-09-15

    This paper and presentation describes technical details about a successful experience in a unique project in Mexico for making possible the rural electrification at one third of the total cost vs a traditional substation. This alternate solution for electrification of rural communities where construction of distribution lines or traditional substations are not economically possible due to local government's budget limits or because the electrical companies are looking for the ROI Return Over Investment in poverty communities.

  7. ENEL high and medium voltage electrical substations for power supply to urban centers

    International Nuclear Information System (INIS)

    Bargigia, A.; Boatto, C.; Di Mario, A.; Fava, N.; Sciarra, S.; Speziali, R.

    1991-12-01

    Modular high and medium voltage gas insulated electrical substations are being used by ENEL (Italian Electricity Board) to meet the specific needs of urban centers with special design and sizing constraints of a historical/architectural nature. This paper illustrates the key design, construction operation and performance characteristics of these standardized units. The descriptions include brief notes on equipment-transformer interconnection, interchangeability and environmental compatibility. Performance test procedures and results of actual reliability and certification tests on some substations are reported

  8. Néctar de buriti (Mauritia flexuosa: a bebida funcional do cerrado

    Directory of Open Access Journals (Sweden)

    L. G. C. Garcia

    2015-11-01

    Full Text Available Os frutos das espécies nativas do cerrado oferecem elevado valor nutricional, além de atrativos sensoriais como cor, sabor e aroma peculiares e intensos, ainda pouco explorados comercialmente. O buriti é uma das mais interessantes e prestimosas palmeiras do Brasil e destaca-se pela sua beleza e pelos seus múltiplos usos na alimentação humana. Visando o seu maior aproveitamento, foi realizada a elaboração do néctar de buriti. O produto foi caracterizado físico-química, microbiológica e sensorialmente. Os resultados indicaram que o néctar de buriti possui baixo valor energético 71,73 kcal, seus teores de ferro e manganês são capazes de suprir as necessidades diárias recomendadas, além de poder receber alegação de produto funcional, devido ao seu teor de fibras (3,1 g (100 g-1 de néctar. Quanto às análises microbiológicas, o néctar de buriti apresentou-se dentro dos limites microbiológicos estabelecidos pela legislação sanitária. Sensorialmente, teve boa aceitação, obtendo média geral 7 e intenção de compra de 81,07% dentre os entrevistados. Desta forma, a industrialização de buriti torna-se alternativa para o aproveitamento deste fruto, além de ser um produto de grande valor nutricional.Buriti’s Nectar (Mauritia flexuosa: a Functional Cerrado’s Beverage Abstract: The cerrado’s native species fruits offer high nutritional value, besides sensory attractive as color, flavor and unique aroma and intense, yet little explored commercially. Buriti is one of the most interesting and precious palms of Brazil and stands out for its beauty and its multiple uses in food. Aiming his greatest achievement, the Buriti’s nectar development was performed. The product was characterized physic-chemical, microbiological and sensory. The results indicated that the Buriti’s nectar has low energy 71.73 kcal, their iron and manganese levels are able to meet the recommended daily requirements, and can get functional product

  9. Maracujá: um alimento funcional?

    Directory of Open Access Journals (Sweden)

    Maria Luiza Zeraik

    Full Text Available Este artigo é uma revisão bibliográfica sobre as espécies brasileiras de Passiflora (Passiflora edulis fo. flavicarpa O. Deg., P. alata Curtis e P. edulis fo. edulis. A maioria dos artigos da literatura focaliza somente as folhas de Passiflora, enquanto que esta revisão contém informações sobre a polpa, cascas e sementes dos frutos do maracujá, com destaque para a composição química, estudos nutricionais e farmacológicos. O enfoque nos frutos do maracujá fundamenta-se no amplo consumo do suco de maracujá (fresco ou industrializado no Brasil e também nas investigações em andamento para avaliar o seu potencial uso como alimento funcional.

  10. EMC considerations for protection of cables against switching effects at secondary side of substations

    Energy Technology Data Exchange (ETDEWEB)

    Heydari, H.; Faghihi, F.; Abbasi, V. [Iran Univ. of Science and Technology, Narmak, Tehran (Iran, Islamic Republic of). Center of Excellence for Power System Automation and Operation

    2007-07-01

    High performance and correct functionality of equipment that operate in high voltage substations during transient states need careful engineering design. To achieve electromagnetic compatibility (EMC) in a system, it is necessary to correct design problems and to use special methods like shielding, grounding and filtering which cause an increase in overall cost. This paper discussed a study of a medium voltage substation whose switching process caused electromagnetic interference to low voltage cables. Three methods of decreasing overvoltage and overcurrent were discussed and compared. Recognition of magnetic fields was accomplished by ANSYS (base on finite element method). In addition, overvoltages during the switching process were calculated by common mode and differential mode equivalent circuit. The purpose of the study was to assist designers and engineers in selecting a suitable method to achieve electromagnetic compatibility in a substation. The paper discussed the amplitude of switching currents; common mode current; and methods of reducing overvoltages and overcurrents. These methods included differential mode current and shielding. It was concluded that several methods exist to protect a substations against electromagnetic interference effects. An important problem is the structure of switching in a substation that determines the strength of electromagnetic interference. A substation designer can chose the best way to achieve EMC by considering a switching structure that depends on system topology and cost function of the selected method. 7 refs., 17 figs.

  11. Electrical substation service-area estimation using Cellular Automata: An initial report

    Energy Technology Data Exchange (ETDEWEB)

    Fenwick, J.W.; Dowell, L.J.

    1998-07-01

    The service areas for electric power substations can be estimated using a Cellular Automata (CA) model. The CA model is a discrete, iterative process whereby substations acquire service area by claiming neighboring cells. The service area expands from a substation until a neighboring substation service area is met or the substation`s total capacity or other constraints are reached. The CA-model output is dependent on the rule set that defines cell interactions. The rule set is based on a hierarchy of quantitative metrics that represent real-world factors such as land use and population density. Together, the metrics determine the rate of cell acquisition and the upper bound for service area size. Assessing the CA-model accuracy requires comparisons to actual service areas. These actual service areas can be extracted from distribution maps. Quantitative assessment of the CA-model accuracy can be accomplished by a number of methods. Some are as simple as finding the percentage of cells predicted correctly, while others assess a penalty based on the distance from an incorrectly predicted cell to its correct service area. This is an initial report of a work in progress.

  12. Mitigation of Transient Overvoltages Generated Due to Switching Operations and Lightning in Gas-insulated Substation (GIS Without Extra Limiter

    Directory of Open Access Journals (Sweden)

    A. Tavakoli

    2011-09-01

    Full Text Available Gas-insulated substations (GIS have different specifications in proportion to air-insulated substations. Transformer failures related to lightning and switching are often reported in the gas insulated substation (GIS. This problem is the voltage magnifications due to reflections of switching and lightning surges at various junctions within the GIS. thereby overvoltages in GIS are more important than air-insulated substation. There are methods to suppress the stresses created by lightning and switching. However, these methods are suitable before installing the substation and during the substation design period. This paper presents feasible methods for mitigation of the overvoltage magnitude. The advantages of the proposed methods are their simplicity and low cost for implantation along with producing minimal changes in the installed GIS.

  13. Lóbulos frontales y funciones ejecutivas en transexuales

    OpenAIRE

    Orozco Calderón,Gabriela; Ostrosky Shejet,Feggy

    2012-01-01

    Una persona transexual se define como aquella que presenta una incongruencia entre el fenotipo físico y la identidad de género. Existen transexuales nacidos hombres pero con identidad de género de mujer. Se ha propuesto que uno de los orígenes de esta condición radica en los efectos que las hormonas esteroides sexuales tienen sobre el desarrollo cerebral a nivel prenatal y es posible que afecten las funciones cognitivas como las funciones ejecutivas. El objetivo fue evaluar funciones ejecutiv...

  14. Augmented Reality Applications for Substation Management by Utilizing Standards-Compliant SCADA Communication

    Directory of Open Access Journals (Sweden)

    Miro Antonijević

    2018-03-01

    Full Text Available Most electrical substations are remotely monitored and controlled by using Supervisory Control and Data Acquisition (SCADA applications. Current SCADA systems have been significantly enhanced by utilizing standardized communication protocols and the most prominent is the IEC 61850 international standard. These enhancements enable improvements in different domains of SCADA systems such as communication engineering, data management and visualization of automation process data in SCADA applications. Process data visualization is usually achieved through Human Machine Interface (HMI screens in substation control centres. However, this visualization method sometimes makes supervision, control and maintenance procedures executed by engineers slow and error-prone because it separates equipment from its automation data. Augmented reality (AR and mixed reality (MR visualization techniques have matured enough to provide new possibilities of displaying relevant data wherever needed. This paper presents a novel methodology for visualizing process related SCADA data to enhance and facilitate human-centric activities in substations such as regular equipment maintenance. The proposed solution utilizes AR visualization techniques together with standards-based communication protocols used in substations. The developed proof-of-concept AR application that enables displaying SCADA data on the corresponding substation equipment with the help of AR markers demonstrates originality and benefits of the proposed visualization method. Additionally, the application enables displaying widgets and 3D models of substation equipment to make the visualization more user-friendly and intuitive. The visualized SCADA data needs to be refreshed considering soft real-time data delivery restrictions. Therefore, the proposed solution is thoroughly tested to demonstrate the applicability of proposed methodology in real substations.

  15. Neurofisiología y funciones mentales

    Directory of Open Access Journals (Sweden)

    Carlos Moreno B.

    1994-04-01

    Full Text Available El editor de la revista Nature, al comentar una revisión sobre el estado de las neurociencias, el 15 de octubre de 1981, afirmo: "En cierto sentido, las neurociencias están en el filo de la navaja de la nueva biología. Enriquecidas por la información novedosa y fortalecidas con un desfile vertiginoso de nuevas técnicas, están comprometidas con una de las más molestas y antiguas preguntas: ¿Cómo lleva a cabo sus funciones la representación física de la mente, llamada cerebro? Pero en otro sentido, las neurociencias incluyen algunas de las investigaciones más fastidiosas. EI continuo progreso de la técnica, tan veloz como podamos imaginarlo, es con frecuencia una fuente de frustración y desilusión para los investigadores. La que está de moda este año con las neuronas, puede ser el descarte del próximo... En general, las neurociencias están en el negocio de fabricar ladrillos sin barro.

  16. TIC y diversidad funcional: conocimiento del profesorado

    Directory of Open Access Journals (Sweden)

    José María Fernández Batanero

    2017-12-01

    Full Text Available La educación de calidad en igualdad y equidad requiere el compromiso de todos los miembros de la comunidad educativa. Este se adquiere favoreciendo la formación permanente del profesorado, un aprendizaje continuo adaptado a las necesidades y a las características de los alumnos. En este contexto, el presente artículo muestra los resultados de una investigación cuyo propósito ha sido conocer el nivel de formación y conocimiento del profesorado de educación primaria de Andalucía, con respecto a la aplicación de las TIC a personas con diversidad funcional. El diseño de investigación utilizado ha sido de tipo mixto (metodología cuantitativa y cualitativa, analizándose 342 cuestionarios suministrados a docentes de educación primaria y 84 entrevistas realizadas a informantes claves (miembros de equipos directivos, coordinadores TIC, directores y asesores tecnológicos de centros de formación del profesorado. Entre las conclusiones podemos destacar la falta de conciencia y preparación por parte del profesorado, así como que el desarrollo de experiencias de formación en este ámbito sigue siendo insuficiente y, en ocasiones, inexistente.

  17. La sexualidad en la discapacidad funcional

    Directory of Open Access Journals (Sweden)

    Patricia Vélez-Laguado

    2006-12-01

    Full Text Available Una realidad es que hombres y mujeres con discapacidad funcional están inmersos en las sociedades que, siendo internamente imperfectas, han establecido un modelo de perfección al que ningún miembro concreto de ellas tiene acceso, y que definen la manera de ser física, sensorial o psíquicamente y las reglas de funcionamiento social. Y esto se relaciona con las ideas de perfección y "normalidad" establecidas por un amplio sector que tiene poder y por el concepto de mayorías meramente cuantitativas. La sexualidad y la función sexual en las personas discapacitadas son aspectos no aceptados por la sociedad en general que, por el contrario, los estigmatiza, conllevando a la marginación, malos tratos, violación de los derechos sexuales y reproductivos, explotación, asignación de papeles pasivos, olvido y la creación de un sinnúmero de mitos y tabúes en torno a la salud sexual y reproductiva de ellos.

  18. La Gramática Discursivo-Funcional

    NARCIS (Netherlands)

    Hengeveld, K.; Mackenzie, J.L.

    2011-01-01

    La Gramática Discursivo-Funcional (GDF) es una teoría funcional del lenguaje de inspiración tipológica que presenta una organización descendente (top-down) con el objeto de alcanzar la adecuación psicológica y que toma el Acto Discursivo como unidad básica de análisis para lograr la adecuación

  19. Números polares de P en el cuerpo de funciones hermitianas

    OpenAIRE

    Wilson Olaya León

    2008-01-01

    En este artículo presentamos una caracterización de los números polares (o no lagunas) del lugar infinito en el cuerpo de funciones hermitia- nas. Más aún, mostraremos que en dicho cuerpo de funciones los números polares de P∞ determinan una base explícita para el espacio vectorial aso- ciado al divisor mP∞ .

  20. Power substation location selection using fuzzy analytic hierarchy process and PROMETHEE: A case study from Bangladesh

    International Nuclear Information System (INIS)

    Kabir, Golam; Sumi, Razia Sultana

    2014-01-01

    Electromagnetic radiations emanating from the high voltage lines and substations pose serious adverse health consequences to living beings. As a result, selection of power substation location is an important strategic decision-making problem for both public and private sectors. In general, many conflicting factors affect the appropriate substation location selection problem which adheres to uncertain and imprecise data. In this paper, a simple, systematic and logical scientific approach is structured to evaluate power substation location through integrating Fuzzy Analytical Hierarchy Process (FAHP) with the Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE). The proposed integrated approach provides more realistic and reliable results, and facilitates the decision-maker to handle multiple contradictory decision perspectives through eliminating the limitations of FAHP and PROMETHEE methods. To accredit the proposed model, it is implemented in a power substation location selection problem in Bangladesh. - Highlights: • Integrate the strengths and eliminate the limitations of FAHP and PROMETHEE. • Consider social, technological, economic, environmental, and site characteristics criteria. • Determine the weights of criteria and sub-criteria using FAHP. • Present both PROMETHEE I and PROMETHEE II ranking. • Enable graphical representation of the alternatives and criteria by GAIA plane

  1. Toward a methodology for substate projections of registered nurse supply and demand in New York.

    Science.gov (United States)

    McGinnis, Sandra; Martiniano, Robert; Moore, Jean

    2010-01-01

    Even as concerns about nursing shortages continue nationwide and for individual states in the United States, there is little information on the impact of nursing shortages at substate levels, such as counties or groups of small counties. National and state level assessments can mask wide geographic variation in the distribution of registered nurses (RNs). The Center for Health Workforce Studies at the School of Public Health, University at Albany, developed a practical approach to projecting RN supply and demand at substate levels. The experimental model used in this research was adapted from a methodology utilized for the RN National Supply Model and National Demand Model developed by the Health Resources and Services Administration in the department of Health and Human Services to make RN supply and demand projections at the broader national and state levels. The Center's research highlighted the value of substate analyses in the identification of RN supply and demand gaps and found that supply and demand gaps vary greatly by region and within regions. This study also provided an in-depth understanding of the dynamics that drive substate labor markets for RNs as well as the need for substate analyses to help policymakers better allocate scarce resources to address nursing shortages.

  2. Application of Service Oriented Architecture for Sensors and Actuators in District Heating Substations

    Science.gov (United States)

    Gustafsson, Jonas; Kyusakov, Rumen; Mäkitaavola, Henrik; Delsing, Jerker

    2014-01-01

    Hardwired sensor installations using proprietary protocols found in today's district heating substations limit the potential usability of the sensors in and around the substations. If sensor resources can be shared and re-used in a variety of applications, the cost of sensors and installation can be reduced, and their functionality and operability can be increased. In this paper, we present a new concept of district heating substation control and monitoring, where a service oriented architecture (SOA) is deployed in a wireless sensor network (WSN), which is integrated with the substation. IP-networking is exclusively used from sensor to server; hence, no middleware is needed for Internet integration. Further, by enabling thousands of sensors with SOA capabilities, a System of Systems approach can be applied. The results of this paper show that it is possible to utilize SOA solutions with heavily resource-constrained embedded devices in contexts where the real-time constrains are limited, such as in a district heating substation. PMID:25196165

  3. Implementation of superconducting fault current limiter for flexible operation in the power substation

    Energy Technology Data Exchange (ETDEWEB)

    Song, Chong Suk, E-mail: chong_suk@korea.ac.kr [School of Electrical Engineering, Korea University, Anam dong, Seonbukgu, Seoul 136-713 (Korea, Republic of); Lee, Hansang [School of Railway and Electrical Engineering, Kyungil University, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 712-701 (Korea, Republic of); Cho, Yoon-sung [Department of Electric and Energy Engineering, Catholic University of Daegu, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 712-702 (Korea, Republic of); Suh, Jaewan [School of Electrical Engineering, Korea University, Anam dong, Seonbukgu, Seoul 136-713 (Korea, Republic of); Jang, Gilsoo, E-mail: gjang@korea.ac.kr [School of Electrical Engineering, Korea University, Anam dong, Seonbukgu, Seoul 136-713 (Korea, Republic of)

    2014-09-15

    Highlights: • The power load concentrated in load centers results in high levels of fault current. • This paper introduces a fault current reduction scheme using SFCLs in substations. • The SFCL is connected in parallel to the bus tie between the two busbars. • The fault current mitigation using SFCLs is verified through PSS/e simulations. - Abstract: The concentration of large-scale power loads located in the metropolitan areas have resulted in high fault current levels during a fault thereby requiring the substation to operate in the double busbar configuration mode. However, the double busbar configuration mode results in deterioration of power system reliability and unbalanced power flow in the adjacent transmission lines which may result in issues such as overloading of lines. This paper proposes the implementation of the superconducting fault current limiter (SFCL) to be installed between the two substation busbars for a more efficient and flexible operation of the substation enabling both single and double busbar configurations depending on the system conditions for guaranteeing power system reliability as well as fault current limitations. Case studies are being performed for the effectiveness of the SFCL installation and results are compared for the cases where the substation is operating in single and double busbar mode and with and without the installation of the SFCL for fault current mitigation.

  4. Análise econômica de um sistema de aproveitamento de água de chuva em unidade hospitalar

    OpenAIRE

    Fonseca, Márcio de Castro

    2016-01-01

    O uso de tecnologias de aproveitamento de água de chuva vem se consolidando cada vez mais como fonte alternativa de suprimento de água em diversos tipos de usos. A vantagem desta tecnologia se baseia na acessibilidade da água durante a estação seca, com a possibilidade de substituição da água proveniente do abastecimento público. O objetivo deste estudo consistiu na análise financeira de dois projetos piloto de aproveitamento de água de chuva para o abastecimento de lavanderia em unidade hosp...

  5. FABRICAÇÃO DE DOCE DE GOIABA COM APROVEITAMENTO DO ALBEDO DO MARACUJÁ AMARELO

    Directory of Open Access Journals (Sweden)

    Lúcia C. Carneiro

    2010-01-01

    Full Text Available Atualmente é crescente a busca por produtos derivados de frutas mistas, com ênfase em espécies vegetais que reúnem boas características nutricionais, sensoriais e propriedades funcionais. A goiaba vermelha é uma boa fonte de vitamina C, licopeno e fibra solúvel. Estas substâncias têm sido associadas com a prevenção da formação de radicais livres pelo organismo, doenças cardiovasculares, diabete, alguns tipos de câncer, entre outras enfermidades. No processamento industrial do maracujá visando à obtenção de polpas e sucos são gerados muitos resíduos. As cascas representam em média 61,9% do peso do fruto; são ricas em carboidratos e apresentam considerável teor de pectina, em média 20% na base seca. A pectina é uma fibra solúvel de grande importância para a saúde. Na elaboração de doces e geléias de frutas, constitui um ingrediente necessário à formação de gel e melhoria de textura. O produto comercial, extraído do resíduo das frutas cítricas requer processo tecnológico sofisticado e por isso, tem custo elevado, o que dificulta a sua aquisição e uso pelas pequenas agroindústrias familiares. O doce misto de goiaba com aproveitamento do albedo do maracujá vai de encontro às necessidades de pequenos produtores de doces e às exigências do mercado consumidor, além de contribuir para o melhor aproveitamento das matérias primas agropecuárias. O objetivo deste trabalho foi testar diferentes concentrações de albedo do maracujá amarelo visando a obtenção de um doce em massa “tipo corte” sem adição de pectina comercial e compará-lo sensorialmente com uma goiabada comercial. Foram testadas duas formulações de doces em massa tipo corte, diferindo quanto à concentração de polpa de goiaba albedo e utilizados, uma com 70% e 30% (F1 e outra com 60% e 40%. As misturas foram acrescidas de açúcar e ácido cítrico como ajustador de pH, sendo concentradas até atingir teores de sólidos solúveis (

  6. APROVEITAMENTO DE RESÍDUOS VEGETAIS PARA PRODUÇÃO DE FAROFA TEMPERADA

    Directory of Open Access Journals (Sweden)

    Clarissa DAMIANI

    2011-12-01

    Full Text Available Dentre as alternativas para evitar desperdício, destaca-se o aproveitamento de partes de alimentos que, geralmente, são desprezadas. Considerando a necessidade em disponibilizar uma alimentação saudável e rica em nutrientes, a utilização de partes vegetais surge como alternativa para melhorar a qualidade nutricional do cardápio e reduzir o desperdício de alimentos. Assim, o objetivo foi desenvolver um produto, a partir de cascas de banana, chuchu e talos de couve. Para avaliação do novo produto foram realizadas análises de composição centesimal, perfil de ácidos graxos, análise microbiológica e sensorial. Quanto à composição centesimal, verificou-se que a farofa possui reduzido teor de carboidratos totais (42,84g/100g e valor energético (323,59kcal/100g. Dentre os ácidos graxos saturados foi identificado, em maiores quantidades, o ácido esteárico (30,34% e palmítico (16,46%, para os insaturados o destaque foi para o ácido oleico (29,27%. A análise sensorial mostrou que o produto desenvolvido obteve um bom nível de aceitação, com elevada intenção de compra (97%. Sendo assim, a farofa apresentou ser uma alternativa viável, colaborando para a diminuição de lixo orgânico e do desperdício, além de possuir bom valor nutricional.

  7. Substation design improvement with a probabilistic reliability approach using the TOPASE program

    Energy Technology Data Exchange (ETDEWEB)

    Bulot, M.; Heroin, G.; Bergerot, J-L.; Le Du, M. [Electricite de France (France)

    1997-12-31

    TOPASE, (the French acronym for Probabilistic Tools and Data Processing for the Analysis of Electric Systems), developed by Electricite de France (EDF) to perform reliability studies on transmission substations, was described. TOPASE serves a dual objective of assisting in the automation of HV substation studies, as well as enabling electrical systems experts who are not necessarily specialists in reliability studies to perform such studies. The program is capable of quantifying the occurrence rate of undesirable events and of identifying critical equipment and the main incident scenarios. The program can be used to improve an existing substation, to choose an HV structure during the design stage, or to choose a system of protective devices. Data collected during 1996 and 1997 will be analyzed to identify useful experiences and to validate the basic concepts of the program. 4 figs.

  8. Efficiency of Health Care Sector at Sub-State Level in India: A Case of Punjab

    Directory of Open Access Journals (Sweden)

    Brijesh C. Purohit

    2009-11-01

    Full Text Available In recent years, WHO and other individual researchers have advocated estimation of health system performance through stochastic frontier models. It provides an idealized yardstick to evaluate economic performance of health system. So far attempts in India have remained focused at state level analysis. This paper attempts a sub-state level analysis for an affluent Indian state, namely Punjab, by using stochastic frontier technique. Our results provide pertinent insight into state health system and facilitate health facility planning at the sub-state level. Carried out in two stages of estimation, our results suggest that life expectancy in the Indian state could be enhanced considerably by correcting the factors that are adversely influencing the sub-state level health system efficiency. A higher budgetary allocation for health manpower is recommended by us to improve efficiency in poorly performing districts. This may be supported by policy initiatives outside the health system by empowering women through better education and work participation.

  9. Noise impact caused by electrical energy substations in the city of Curitiba, Brazil

    International Nuclear Information System (INIS)

    Diniz, F.B.; Zannin, P.H.T.

    2004-01-01

    This survey is intended to characterize the noise impact due to electrical energy substations in the city of Curitiba over the population living in their vicinity. This impact has been studied with the aid of a computational tool capable of mapping the acoustical field of substations and their vicinity. Several factors have been considered in this survey: (1) sound power of the transformers; (2) vehicle flow on the surrounding roads; (3) positioning of the firewalls, buildings and walls; and (4) terrain topography. Four substations have been analyzed, and an acoustical map has been traced for each of them. With these maps it was possible to visualize what was the incident noise level on the building facades. The predicted noise levels have been compared to the environmental legislation of the noise emissions in effect in the city

  10. Electric and magnetic field testing in vicinity of 110/x kV substations

    Directory of Open Access Journals (Sweden)

    Grbić Maja

    2016-01-01

    Full Text Available The levels of non-ionizing radiation (electric and magnetic fields at power frequency, which occur near 110/x kV substations are analyzed in this paper. The results of electric field strength and magnetic flux density measurements in the vicinity of three typical substations of the aforementioned voltage level are shown. With the purpose of estimating the exposure of the population to these fields, the obtained results were compared to the reference maximum levels set for increased sensitivity areas, which amount to 2 kV/m for electric field and 40 μT for magnetic flux density. The objective of the conducted analysis is to reach general conclusions on the levels of electric and magnetic fields, which may occur in the vicinity of the substations mentioned above, and evaluate their compliance with the national regulations on the population protection from non-ionizing radiation.

  11. Analysis of Norm IEC 61850 in the transmission of data via communications network of substations

    Energy Technology Data Exchange (ETDEWEB)

    Renda, T.; Botura Junior, G. [Universidade Estadual Paulista (UNESP), Sorocaba, SP (Brazil); Mesquita, L.; Rizol, P.M.S.R. [Universidade Estadual Paulista (UNESP), Guaratingueta, SP (Brazil)

    2009-07-01

    The tendency of using a protocol allows electrical substations to become 'intelligent', that is, capable of communicating in a much more efficient manner. This greatly reduces the number of connections, and as a consequence optimizes the speed between messages. The Norm IEC 61850-9-2 came to minimize the use of cables for the interconnections of various equipment involved in safety procedures of a substation. The present paper, has the objective of identifying a way of integrating the Norm IEC-61850 with the transmission of data via 'Generic Object Oriented Substation Event' (GOOSE) and of substituting the direct connection of binary I/O's of the Intelligent Electronic Devices also known as IED's. (author)

  12. Characteristic Analysis of DC Electric Railway Systems with Superconducting Power Cables Connecting Power Substations

    Science.gov (United States)

    Ohsaki, H.; Matsushita, N.; Koseki, T.; Tomita, M.

    2014-05-01

    The application of superconducting power cables to DC electric railway systems has been studied. It could leads to an effective use of regenerative brake, improved energy efficiency, effective load sharing among the substations, etc. In this study, an electric circuit model of a DC feeding system is built and numerical simulation is carried out using MATLAB-Simulink software. A modified electric circuit model with an AC power grid connection taken into account is also created to simulate the influence of the grid connection. The analyses have proved that a certain amount of energy can be conserved by introducing superconducting cables, and that electric load distribution and concentration among the substations depend on the substation output voltage distribution.

  13. Characteristic analysis of DC electric railway systems with superconducting power cables connecting power substations

    International Nuclear Information System (INIS)

    Ohsaki, H; Matsushita, N; Koseki, T; Tomita, M

    2014-01-01

    The application of superconducting power cables to DC electric railway systems has been studied. It could leads to an effective use of regenerative brake, improved energy efficiency, effective load sharing among the substations, etc. In this study, an electric circuit model of a DC feeding system is built and numerical simulation is carried out using MATLAB-Simulink software. A modified electric circuit model with an AC power grid connection taken into account is also created to simulate the influence of the grid connection. The analyses have proved that a certain amount of energy can be conserved by introducing superconducting cables, and that electric load distribution and concentration among the substations depend on the substation output voltage distribution.

  14. Accurately Localize and Recognize Instruments with Substation Inspection Robot in Complex Environments

    Directory of Open Access Journals (Sweden)

    Hui Song

    2014-07-01

    Full Text Available This paper designs and develops an automatic detection system in the substation environment where complex and multi-inspecting objects exist. The inspection robot is able to fix and identify the objects quickly using a visual servo control system. This paper focuses on the analysis of fast lockup and recognition method of the substation instruments based on an improved Adaboost algorithm. The robot adjusts its position to the best view point and best resolution for the instrument in real-time. The dial and pointer of the instruments are detected with an improved Hough algorithm, and the angle of the pointer is converted to the corresponding readings. The experimental results indicate that the inspection robot can fix and identify the substation instruments quickly, and has a wide range of practical applications.

  15. Future power plant control integrates process and substation automation into one system; Zukunftsorientierte Kraftwerksleittechnik vereint Prozess- und Stationsautomatisierung

    Energy Technology Data Exchange (ETDEWEB)

    Orth, J. [ABB AG, Mannheim (Germany). Div. Energietechnik-Systeme

    2007-07-01

    The new IEC 61850 standard has been established for substation control systems. In future, IEC 61850 may also be widely used for electrical systems in power plants. IEC 61850 simplifies the integration of process and substation control systems in power plants by creating one automated system across manufacturers and thus makes a significant contribution to cost efficiency in operation and maintenance. (orig.)

  16. Study on the system-level test method of digital metering in smart substation

    Science.gov (United States)

    Zhang, Xiang; Yang, Min; Hu, Juan; Li, Fuchao; Luo, Ruixi; Li, Jinsong; Ai, Bing

    2017-03-01

    Nowadays, the test methods of digital metering system in smart substation are used to test and evaluate the performance of a single device, but these methods can only effectively guarantee the accuracy and reliability of the measurement results of a digital metering device in a single run, it does not completely reflect the performance when each device constitutes a complete system. This paper introduced the shortages of the existing test methods. A system-level test method of digital metering in smart substation was proposed, and the feasibility of the method was proved by the actual test.

  17. Automated system for load flow prediction in power substations using artificial neural networks

    Directory of Open Access Journals (Sweden)

    Arlys Michel Lastre Aleaga

    2015-09-01

    Full Text Available The load flow is of great importance in assisting the process of decision making and planning of generation, distribution and transmission of electricity. Ignorance of the values in this indicator, as well as their inappropriate prediction, difficult decision making and efficiency of the electricity service, and can cause undesirable situations such as; the on demand, overheating of the components that make up a substation, and incorrect planning processes electricity generation and distribution. Given the need for prediction of flow of electric charge of the substations in Ecuador this research proposes the concept for the development of an automated prediction system employing the use of Artificial Neural Networks.

  18. Cost Forecasting of Substation Projects Based on Cuckoo Search Algorithm and Support Vector Machines

    Directory of Open Access Journals (Sweden)

    Dongxiao Niu

    2018-01-01

    Full Text Available Accurate prediction of substation project cost is helpful to improve the investment management and sustainability. It is also directly related to the economy of substation project. Ensemble Empirical Mode Decomposition (EEMD can decompose variables with non-stationary sequence signals into significant regularity and periodicity, which is helpful in improving the accuracy of prediction model. Adding the Gauss perturbation to the traditional Cuckoo Search (CS algorithm can improve the searching vigor and precision of CS algorithm. Thus, the parameters and kernel functions of Support Vector Machines (SVM model are optimized. By comparing the prediction results with other models, this model has higher prediction accuracy.

  19. Ground potential rise on the high voltage substation during lightning strike measurement and simulation results

    Energy Technology Data Exchange (ETDEWEB)

    Wiater, Jaroslaw [Bialystok Technical University (Poland). Electrical Dept.], E-mail: jaroslawwiater@we.pb.edu.pl

    2007-07-01

    This paper will present a ground potential rise (GPR) measurement results. All measurements were made during normal work of the real high voltage substation and according a special procedure developed for this occasion. This procedure does not influence on the protection relays and ensures a proper work of the substation even for 6 kV surges. During measurements current and voltage surges were produced by the impulse generator - UCS 500M6B. Measurement results are compared to simulation results performed in CDEGS software for the same initial conditions. (author)

  20. Defining functional dyspepsia Definiendo la dispepsia funcional

    Directory of Open Access Journals (Sweden)

    Fermín Mearin

    2011-12-01

    other hand, it has proven very difficult to establish a clear correlation between symptoms and pathophysiological mechanisms.La dispepsia, y la dispepsia funcional, suponen un problema de salud pública muy importante. Es fundamental disponer de una buena definición de dispepsia que nos ayude a un mejor enfoque de los síntomas, toma de decisiones e indicación de tratamiento. Durante los últimos años ha habido muchos intentos de establecer una definición de dispepsia. En la mayoría de los casos el resultado no ha sido muy afortunado y han existido discrepancias claras en si los síntomas debían o no estar relacionados con la digestión, qué tipo de síntomas se debían incluir, cuál debería ser la localización anatómica de las molestias, etc. El comité de Roma III definió la dispepsia como "síntoma o conjunto de síntomas que la mayoría de médicos consideran tienen su origen en la región gastroduodenal" incluyendo los siguientes: pesadez postprandial, saciedad precoz y dolor o ardor epigástrico; se definieron dos entidades nuevas: a síntomas dispépticos inducidos por la comida (síndrome del distrés postprandial; y b dolor epigástrico (síndrome del dolor epigástrico. Esta y otras definiciones han tenido sus ventajas y sus inconvenientes. En algunos casos han sido demasiado complejas y en otras sencillas en exceso; además, frecuentemente han pecado de ser demasiado imprecisas y poco prácticas. Por otra parte, algunas (las más recientes no son fácilmente aplicables al idioma español. En una reunión de especialistas en aparato digestivo con especial interés en los trastornos funcionales digestivos se sometieron a discusión y votación los distintos aspectos de la definición de dispepsia llegando a las siguientes conclusiones. La dispepsia se define como un conjunto de síntomas, relacionados o no con la ingesta, localizados en el hemiabdomen superior, siendo estos: a molestia (como categoría de intensidad o dolor epigástrico; b pesadez

  1. An Auto Tuning Substation Peak Shaving Controller for Congestion Management Using Flexible Demand

    DEFF Research Database (Denmark)

    Sossan, Fabrizio; Marinelli, Mattia

    2013-01-01

    A closed loop substation peak shaving/congestion management controller for radial distribution networks is presented. The controller it uses an individual control signal in order to shift the consumption of a population of demand side resources, DSRs. The controller auto tunes its parameters on...

  2. Man-entry grid and power substations in Germany; Begehbare Netz- und Uebergabestationen in Deutschland

    Energy Technology Data Exchange (ETDEWEB)

    Primus, Illo-Frank

    2010-11-15

    Since the first publication of an electrotechnical standard for factory-assembled stations in 1997, grid and power substations in Germany as a rule are not constructed on site - with some exceptions, e.g. large-scale switching stations - but as prefabricated, factory-assembled concrete structures. There are two types of stations depending on the producer.

  3. SUBCALC 2.0 -- Substation magnetic field modeling program: User's manual

    International Nuclear Information System (INIS)

    Pappa, J.R.; Silva, J.M.; Kasten, D.; Sebo, S.; Ohio State Univ., Columbus, OH

    1995-11-01

    SUBCALC, a Microsoft reg-sign Windows trademark application, allows users to map magnetic fields in or around electric utility substations from common types of substation equipment. SUBCALC allows users to create a substation using predefined transmission and distribution lines and other substation components and to quickly modify them to match the desired operating conditions. Users have the option of invoking Power Line Calculator, a program that integrates with SUBCALC, to define power line conditions such as currents, phase angles, power factor, or symmetric components for three-phase lines that are unbalanced or carry net current. SUBCALC 2.0 offers numerous modeling, user interface, and editing enhancements. For example, users can now produce multi-segmented linear profile plots, take spot measurements anywhere in the model, extend lines with automatic connectivity to preexisting structures, and produce phantom extensions of lines beyond the model to avoid a ''stunted'' appearance to the field map. The program's output is available in four possible formats, including a three-dimensional map of the magnetic field, two-dimensional contours, two-dimensional profile plots, and a table with statistical values. All formats may be printed, accompanied by a three-dimensional view of the world the user has drawn

  4. Modeling reliability of power systems substations by using stochastic automata networks

    International Nuclear Information System (INIS)

    Šnipas, Mindaugas; Radziukynas, Virginijus; Valakevičius, Eimutis

    2017-01-01

    In this paper, stochastic automata networks (SANs) formalism to model reliability of power systems substations is applied. The proposed strategy allows reducing the size of state space of Markov chain model and simplifying system specification. Two case studies of standard configurations of substations are considered in detail. SAN models with different assumptions were created. SAN approach is compared with exact reliability calculation by using a minimal path set method. Modeling results showed that total independence of automata can be assumed for relatively small power systems substations with reliable equipment. In this case, the implementation of Markov chain model by a using SAN method is a relatively easy task. - Highlights: • We present the methodology to apply stochastic automata network formalism to create Markov chain models of power systems. • The stochastic automata network approach is combined with minimal path sets and structural functions. • Two models of substation configurations with different model assumptions are presented to illustrate the proposed methodology. • Modeling results of system with independent automata and functional transition rates are similar. • The conditions when total independence of automata can be assumed are addressed.

  5. Coordinated Voltage Control Scheme for SEIG-Based Wind Park Utilizing Substation STATCOM and ULTC Transformer

    DEFF Research Database (Denmark)

    S. El Moursi, Mohamed; Bak-Jensen, Birgitte; Abdel-Rahman, Mansour Hassan

    2011-01-01

    and optimal tracking secondary voltage control for wind parks based on self-excited induction generators which comprise STATCOM and under-load tap changer (ULTC) substation transformers. The voltage controllers for the STATCOM and ULTC transformer are coordinated and ensure the voltage support. In steady...

  6. Visualización de funciones de dos variables

    Directory of Open Access Journals (Sweden)

    Busto Caballero, Ana Isabel

    2004-01-01

    Full Text Available Los alumnos de la licenciatura en Administración y Dirección de Empresas tienen dentro de los contenidos del programa de la asignatura “Matemáticas Empresariales I”, el estudio de las funciones de varias variables: continuidad, derivabilidad, diferenciabilidad y optimización. Este tema es complicado de visualizar con tiza y pizarra, a diferencia del mismo estudio realizado para funciones reales de variable real. El objetivo de este trabajo es presentar una metodología para llevar el ordenador a clase y visualizar las gráficas de las funciones de dos variables y sus características específicas, que faciliten la comprensión del tema por parte del alumno, y conseguir que los resultados obtenidos analíticamente tengan un aspecto gráfico e intuitivo.

  7. Entrenamiento Cognitivo de las Funciones Ejecutivas en la Edad Escolar

    OpenAIRE

    María Luisa Betancur-Caro; David A. Molina; Lilian Yohana Cañizales-Romaña

    2016-01-01

    En este artículo nuestro objetivo es evaluar y analizar el Rendimiento Académico de un niño en edad escolar a partir de un programa de entrenamiento cognitivo de las Funciones Ejecutivas. Realizamos el estudio de caso en tres momentos: evaluación inicial pretest con subpruebas de la Banfe y la ENI; identificamos el estado de las funciones ejecutivas, el entrenamiento cognitivo del Control Inhibitorio, la Fluidez y la Planeación, y la evaluación final postest con el mismo repertorio de la eval...

  8. Study of overvoltages by phenomenon of ferroresonance in the substation Filadelfia of the Sistema Electrico Nacional

    International Nuclear Information System (INIS)

    Montealegre Lobo, Leonardo

    2012-01-01

    The mathematical analysis of the phenomenon of ferroresonance is far from easy especially when is looked an exact solution and is wanted to take into account all relevant considerations, that the characteristic of non-linearity has presented in this phenomenon. However, a series of appropriate simplifications are conducted and is possible simulate successfully variables of interest, in this case, voltages and currents. Personnel of the Area Proteccion y Medicion, Region Chorotega of the UEN Transporte Electrico (UEN TE) has approached the Centro de Investigacion en Sistemas de Potencia to be provided by a technical support in understanding (cause and possible mitigation) of a transient event that has caused the arrester output of the Subestacion Filadelfia after conducting an energization operation in said substation. The main supply by the personnel of the UEN TE has been the current measurement of fault recorder of differential protection of power transformer, the wave forms current are recorded 100 ms before, during and 200 ms after the occurrence of the event that has blown the lightning rods low side of the substation power transformer. Research has allowed to generate the simplifications needed to reconstruct the event occurred in substation in the absence of the voltage measurements of recorded event, the magnetization curve of the transformers, the electrical characteristics of underground cables and lightning rod present in the substation. Ranges are detailed on the determination of the reasons that have caused the explosion of lightning rods in the rod 13.8 kV of substation Filadelfia when maneuvering connection of electrical equipment for energization Ingenio El Viejo. Recommendations are offered for minimizing the effects caused by these maneuvers. (author) [es

  9. Helping utilities harness the power of the web for substation automation

    Energy Technology Data Exchange (ETDEWEB)

    Finney, D.

    2000-11-01

    The significance of the Internet to the deregulated electric power industry and the ability to tap into the benefits of Web-enabled substation monitoring and control are reviewed. It is this author's contention that the convergence of Internet access from PCs, servers and Internet-ready intelligent electronic devices make it possible to have full-scale substation automation and control without the high price tag associated with SCADA systems. Whereas in the past automation solutions were thought to be appropriate only for big utilities, the potential of the Internet such as the GE-hosted enerVista.com service, which is made up of a number of modules which can provide many of the services of a complex enterprise management system at a fraction of the cost, make it possible for smaller utilities to overcome substation automation problems at an affordable cost. By having the communications link over the web, and data acquisition hosted by an outside vendor, even the smallest municipal utility can have the most up-to-date equipment at their disposal, and expand their control to SCADA-level functionality without having to incur the usual programming and technology costs. The example of Whitby Hydro to automate their three substation system with GE Power Management's Universal Relay (UR) intelligent electronic device system by installing a modem as an Internet appliance for 24/7 monitoring, optional protection and control, is cited. Utilities in Oshawa and Thunder Bay, Ontario, and others in New York State and Tennessee, are some of the other utilities currently involved in developing web-based applications that address their unique requirements. At present, there appears to be no limit to the role that the Internet can play in substation automation and control for utilities competing in a global market.

  10. Predictive Maintenance of Power Substation Equipment by Infrared Thermography Using a Machine-Learning Approach

    Directory of Open Access Journals (Sweden)

    Irfan Ullah

    2017-12-01

    Full Text Available A variety of reasons, specifically contact issues, irregular loads, cracks in insulation, defective relays, terminal junctions and other similar issues, increase the internal temperature of electrical instruments. This results in unexpected disturbances and potential damage to power equipment. Therefore, the initial prevention measures of thermal anomalies in electrical tools are essential to prevent power-equipment failure. In this article, we address this initial prevention mechanism for power substations using a computer-vision approach by taking advantage of infrared thermal images. The thermal images are taken through infrared cameras without disturbing the working operations of power substations. Thus, this article augments the non-destructive approach to defect analysis in electrical power equipment using computer vision and machine learning. We use a total of 150 thermal pictures of different electrical equipment in 10 different substations in operating conditions, using 300 different hotspots. Our approach uses multi-layered perceptron (MLP to classify the thermal conditions of components of power substations into “defect” and “non-defect” classes. A total of eleven features, which are first-order and second-order statistical features, are calculated from the thermal sample images. The performance of MLP shows initial accuracy of 79.78%. We further augment the MLP with graph cut to increase accuracy to 84%. We argue that with the successful development and deployment of this new system, the Technology Department of Chongqing can arrange the recommended actions and thus save cost in repair and outages. This can play an important role in the quick and reliable inspection to potentially prevent power substation equipment from failure, which will save the whole system from breakdown. The increased 84% accuracy with the integration of the graph cut shows the efficacy of the proposed defect analysis approach.

  11. Electric Substations, Electric substation locations provided to us from Kansas City Power and Light and City of Gardner only at this time. AIMS is working on getting other providers in area. Data is limited to CUE (Collaborative Utility Exchange) Participants and subcontracto, Published in 2004, Johnson County Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Electric Substations dataset current as of 2004. Electric substation locations provided to us from Kansas City Power and Light and City of Gardner only at this time....

  12. Programación funcional: conceptos y perspectivas

    OpenAIRE

    González Osorio, Fabio Augusto

    2011-01-01

    El presente artículo muestra conceptos subyacentes a la programación funcional, así como características que los hacen un enfoque particular y novedoso de la programación que lo convierten en una clara opción frente al enfoque imperativo convencional en el área del desarrollo de software.

  13. Improving the performance of subtransmission through substation reinforcement; Melhoria do desempenho de sistemas de subtransmissao atraves de reforcos em substacoes

    Energy Technology Data Exchange (ETDEWEB)

    Paiva Mendes, Dilcemar de [Ceara Univ., Fortaleza, CE (Brazil); Melo, Albert Cordeiro Geber de [Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil); Pereira, Jose Luiz Rezende [Juiz de Fora Univ., MG (Brazil)

    1994-12-31

    This work presents an approach to the global reliability improve of power subtransmission systems through of reinforcements in critical components of the power substations. (author) 13 refs., 3 figs., 3 tabs.

  14. On issue of reconstruction at central distribution substation by example of one of plants of Chelyabinsk region

    Science.gov (United States)

    Brylina, O. G.; Semenova, K. D.; Shashkin, V. YU

    2018-03-01

    The article considers the issues of increasing the reliability and economy of the distribution substation. The result is found due to the reconstruction of the central distribution substation and one of the plants of Chelyabinsk region. The reasons for the reconstruction are explained. A comparison of oil and vacuum circuit breakers is made. The advantages of vacuum circuit breakers are shown. Alternative replacement of cables is offered. The basic technical characteristics of the cable brands are shown. The results of reconstruction are proved.

  15. Independent Power Generation in a Modern Electrical Substation Based on Thermoelectric Technology

    Science.gov (United States)

    Li, Z. M.; Zhao, Y. Q.; Liu, W.; Wei, B.; Qiu, M.; Lai, X. K.

    2017-05-01

    Because of many types of electrical equipment with high power in substations, the potentiality of energy conservation is quite large. From this viewpoint, thermoelectric materials may be chosen to produce electrical energy using the waste heat produced in substations. Hence, a thermoelectric generation system which can recycle the waste heat from electric transformers was proposed to improve the energy efficiency and reduce the burden of the oil cooling system. An experimental prototype was fabricated to perform the experiment and to verify the feasibility. The experimental results showed that the output power could achieve 16 W from waste heat of 900 W, and that the power conversion efficiency was approximately 1.8%. Therefore, power generation is feasible by using the waste heat from the transformers based on thermoelectric technology.

  16. METHODOLOGY OF DETERMINATION OF QUALITY INDEX OF MAINTENANCE SERVICE SYSTEM OF POWER EQUIPMENT OF TRACTION SUBSTATIONS

    Directory of Open Access Journals (Sweden)

    O.O. Matusevych

    2016-03-01

    Full Text Available Purpose. The purpose of this paper is development of methodology for definition of a quality system of maintenance and repair (M and P power equipment of traction substations (TS of electrified railways operating under conditions of uncertainty based on expert information. Methodology. The basic tenets of the theory of fuzzy sets and marks, linguistic and interval estimates of experts were applied to solve this problem. Results. Analysis of the existing diversity of approaches to development of modern methods of improvement of M and P allows us to conclude that the improvement in the quality of the system is achieved by solving individual problems increase the operational reliability of power equipment of traction substations in the following main interrelated areas. There are technical, economic and organizational. The basis of the quality evaluation system is initial data and expertise developed version of the document formalized quality evaluation of electrical equipment of traction substations by experts. The choice of determining the level of Quality service system based on the marks, linguistic and interval estimates of experts, which are reflected in quantitative and / or qualitative form was done. The possible options for expert data presentation and their corresponding quantitative methods of calculating the integral index of quality improvement system maintenance and P of traction substations were described. The methodology and the method of assessing the quality of system maintenance and P of TS allows quickly respond to changing operating conditions of power equipment of traction substations, and to determine the most effective strategies for maintenance of electrical and P TS under conditions of uncertainty functioning distance electricity. Originality. The method of a systematic approach to improve the quality of the system maintenance and P of power equipment of traction substation under conditions of uncertainty based on expert

  17. Energy saving in the operation of industrial electrical substations. Part I. Studies

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez Jimenez, Juan J; Zerquera Izquierdo, Mariano D; Beltran Leon, Jose S; Garcia Martinez, Juan M; Alvarez Urena, Maria V; Meza Diaz, Guillermo [Universidad de Guadalajara (Mexico)]. E-mails: cheosj@yahoo.com; mdzi@hotmail.com; beltran5601@yahoo.com.mx; jmargarmtz@yahoo.com; victory_alvarez@telmexmail.com; depmec@cucei.udg.mx

    2013-03-15

    The main objective of this work is to offer a methodology for the operation of substations composed by two or more transformers that feed loads of first category. Understand by loads of first category those in that the interruption of the electric supply may cause the loss of human life. The core of this operation shows that in substations with several transformers, the number of transformers connected at a given moment should be one that avoids losses. [Spanish] El objetivo principal de este trabajo es ofrecer una metodologia para la operacion de subestaciones compuestas por dos o mas transformadores que alimentan cargas de primera categoria. Entendiendose por cargas de primera categoria, aquellas en que la interrupcion del suministro electrico puede causar la perdida de vidas humanas. El nucleo de esta operacion muestra que en las subestaciones con varios transformadores, el numero de transformadores conectados, en un momento dado, debe ser aquel que evite perdidas.

  18. Marys Lake 69/115-kV transmission line upgrade and substation expansion projects

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-05-01

    Western Area Power Administration (Western) and the Platte River Power Authority (Platte River) propose to upgrade portions of the existing electric transmission and substation system that serves the Town of Estes Park, Colorado. The existing transmission lines between the Estes Power Plant Switchyard and the Marys Lake Substation include a 115,000 volt (115-kV) line and 69,000 volt (69-kV) line. Approximately one mile is a double-circuit 115/69-kV line on steel lattice structures, and approximately two miles consists of separate single-circuit 115-kV and a 69-kV lines, constructed on wood H-Frame structures. Both lines were constructed in 1951 by the US Bureau of Reclamation. The existing transmission lines are on rights-of-way (ROW) that vary from 75 feet to 120 feet and are owned by Western. There are 48 landowners adjacent to the existing ROW. All of the houses were built adjacent to the existing ROW after the transmission lines were constructed. Upgrading the existing 69-kV transmission line between the Marys Lake Substation and the Estes Power Plant Switchyard to 115-kV and expanding the Marys Lake Substation was identified as the most effective way in which to improve electric service to Estes Park. The primary purpose and need of the proposed project is to improve the reliability of electric service to the Town of Estes Park. Lack of reliability has been a historical concern, and reliability will always be less than desired until physical improvements are made to the electrical facilities serving Estes Park.

  19. Protection Coordination in Electrical Substation Part-2 Unit Protections (Differential and Distance Protection)

    OpenAIRE

    TÜR, Mehmet Rida; Shobole, Abdulfetah; Baysal, Mustafa; Wadi, Mohammed

    2018-01-01

    Power systemsmust be protected against faults to ensure quality and reliable generation,transmission and distribution of power systems. Power system protection is providedby the protection relays. This paper is the second part of the ProtectionCoordination study for the Siddik Kardesler Substation. The protection fortransmission lines, transformer, bus bars and customer feeders is provided byovercurrent protection, differential and distance protection schemes. In thispaper, issues related wit...

  20. Kinematic analysis and simulation of a substation inspection robot guided by magnetic sensor

    Science.gov (United States)

    Xiao, Peng; Luan, Yiqing; Wang, Haipeng; Li, Li; Li, Jianxiang

    2017-01-01

    In order to improve the performance of the magnetic navigation system used by substation inspection robot, the kinematic characteristics is analyzed based on a simplified magnetic guiding system model, and then the simulation process is executed to verify the reasonability of the whole analysis procedure. Finally, some suggestions are extracted out, which will be helpful to guide the design of the inspection robot system in the future.

  1. Load forecasting at substations terminals - preliminary results; Previsao de carga em saidas de subestacoes - resultados preliminares

    Energy Technology Data Exchange (ETDEWEB)

    Fidalgo, J.N. [Instituto de Engenharia de Sistema e Computadores (INESC), Porto (Portugal). E-mail: jfidalgo@inescn.pt

    1999-07-01

    This paper presents the model developed for current intensity forecasting at the substation terminals. The main objective consists of regression process definition which allows some estimations on the future values for those currents, based on related historical data. Consideration of different time scheduling is intended. Neuronal networks have been used as regression basic tool. Finally, the results obtained up to the present are presented which demonstrate that the adopted strategy and tools are suitable for the objective to be attained.

  2. A new test procedure to evaluate the performance of substations for collective heating systems

    Science.gov (United States)

    Baetens, Robin; Verhaert, Ivan

    2017-11-01

    The overall heat demand of a single dwelling, existing out of space heating and domestic hot water production, decreases due to higher insulation rates. Because of this, investing in efficient and renewable heat generation becomes less interesting. Therefore, to incorporate renewables or residual heat on a larger scale, district heating or collective heating systems grow in importance. Within this set-up, the substation is responsible for the interaction between local demand for comfort and overall energy performance of the collective heating system. Many different configurations of substations exist, which influence both local comfort and central system performance. Next to that, also hybrids exist with additional local energy input. To evaluate performance of such substations, a new experimental-based test procedure is developed in order to evaluate these different aspects, characterized by the two roles a substation has, namely as heat generator and as heat consumer. The advantage of this approach is that an objective comparison between individual and central systems regarding performance on delivering local comfort can be executed experimentally. The lab set-up consists out of three different subsystems, namely the central system, the domestic hot water consumption and the local space heating. The central system can work with different temperature regimes and control strategies, as these aspects have proven to have the largest influence on actual performance. The domestic hot water system is able to generate similar tap profiles according to eco-design regulation for domestic hot water generation. The space heating system is able to demand a modular heat load.

  3. A new test procedure to evaluate the performance of substations for collective heating systems

    Directory of Open Access Journals (Sweden)

    Baetens Robin

    2017-01-01

    Full Text Available The overall heat demand of a single dwelling, existing out of space heating and domestic hot water production, decreases due to higher insulation rates. Because of this, investing in efficient and renewable heat generation becomes less interesting. Therefore, to incorporate renewables or residual heat on a larger scale, district heating or collective heating systems grow in importance. Within this set-up, the substation is responsible for the interaction between local demand for comfort and overall energy performance of the collective heating system. Many different configurations of substations exist, which influence both local comfort and central system performance. Next to that, also hybrids exist with additional local energy input. To evaluate performance of such substations, a new experimental-based test procedure is developed in order to evaluate these different aspects, characterized by the two roles a substation has, namely as heat generator and as heat consumer. The advantage of this approach is that an objective comparison between individual and central systems regarding performance on delivering local comfort can be executed experimentally. The lab set-up consists out of three different subsystems, namely the central system, the domestic hot water consumption and the local space heating. The central system can work with different temperature regimes and control strategies, as these aspects have proven to have the largest influence on actual performance. The domestic hot water system is able to generate similar tap profiles according to eco-design regulation for domestic hot water generation. The space heating system is able to demand a modular heat load.

  4. Electric and magnetic field measurements in an outdoor electric power substation

    Energy Technology Data Exchange (ETDEWEB)

    Safigianni, A.S.; Tsompanidou, C.G. [Democritus Univ. Thrace, Xanthi (Greece). Dept. of Electrical and Computer Engineering

    2006-07-01

    With the ever increasing environmental exposure to man-made electromagnetic fields (EMFs), public concern regarding the potential health hazards of exposure to electric and magnetic fields at extremely low frequencies (ELF) has also increased. This paper examined the ELF fields at a 150/20 kV outdoor electric power substation in Xanthi, Greece. Basic data regarding this substation was provided along with previous relevant research studies. The reference levels for safe general public and occupational exposure according to the International Commission on Non-Ionizing Radiation Protection (ICNIRP) was also presented. The instruments used to take the measurements were described and indicative results of the EMFs measurements in the substation were provided. In general, the measured magnetic flux density values were far below the reference level for safe public and occupational exposure. No significant differentiation was noted in these values in relation to body height. However, the levels were found to be in violation in two positions, near the capacitor banks. It was emphasized that these values greatly decreased with distance, and the positions where these high values were measured were not occupied by technicians when the capacitors were under voltage. In addition, it was emphasized that the measured magnetic flux density values were very small in the supervision room, where the supervisor of the substation works and in the ring zone where the public has access. All the measured electric field strength values were below the reference level for safe public and occupational exposure. It was concluded that the measured field values are within recognized guidelines and pose no danger for public or working personnel. 19 refs., 1 tab., 4 figs.

  5. Simulation Of Substation HV/MV In DIGSILENT Power Factory Software

    International Nuclear Information System (INIS)

    Mladenovski, Ljubisha; Dimova, Iskra; Iliev, Atanas; Fushtikj, Vangel

    2003-01-01

    This paper presents a method for creating a model for substation high voltage/middle voltage (HV/MV) that supplies consumers at middle voltage side and capacitor battery that regulates the voltage at the middle voltage busbar. The results from the analyses are presented and discussed. The models of the transformer and the capacitor battery were made at the University of Rostock, Germany, in DYSIMAC (DYnaniic SImulation of the MACedonian power plants in a new technological and market environment) project. (Author)

  6. Marys Lake 69/115-kV transmission line upgrade and substation expansion projects

    International Nuclear Information System (INIS)

    1996-05-01

    Western Area Power Administration (Western) and the Platte River Power Authority (Platte River) propose to upgrade portions of the existing electric transmission and substation system that serves the Town of Estes Park, Colorado. The existing transmission lines between the Estes Power Plant Switchyard and the Marys Lake Substation include a 115,000 volt (115-kV) line and 69,000 volt (69-kV) line. Approximately one mile is a double-circuit 115/69-kV line on steel lattice structures, and approximately two miles consists of separate single-circuit 115-kV and a 69-kV lines, constructed on wood H-Frame structures. Both lines were constructed in 1951 by the US Bureau of Reclamation. The existing transmission lines are on rights-of-way (ROW) that vary from 75 feet to 120 feet and are owned by Western. There are 48 landowners adjacent to the existing ROW. All of the houses were built adjacent to the existing ROW after the transmission lines were constructed. Upgrading the existing 69-kV transmission line between the Marys Lake Substation and the Estes Power Plant Switchyard to 115-kV and expanding the Marys Lake Substation was identified as the most effective way in which to improve electric service to Estes Park. The primary purpose and need of the proposed project is to improve the reliability of electric service to the Town of Estes Park. Lack of reliability has been a historical concern, and reliability will always be less than desired until physical improvements are made to the electrical facilities serving Estes Park

  7. Capacidad funcional y salud: orientaciones para cuidar al adulto mayor

    Directory of Open Access Journals (Sweden)

    CLARA INÉS GIRALDO M

    2008-07-01

    Full Text Available Objetivo: valorar la salud y la capacidad funcional de ancianos con dependencia funcional para el autocuidado, como elementos para orientar el cuidado de enfermería y el cuidado familiar en casa. Metodología: estudio descriptivo transversal en 40 personas de 65 y más años con dependencia funcional, cuidados por familiar, en Envigado Colombia; muestreo por conveniencia. Valoración de la capacidad funcional con el índice de Katz y la escala de Lawton y Brody, ajustados según grupo de Neurociencias, Universidad de Antioquia. Hallazgos: población entre 67 y 98 años, edad promedio 84,08 años; 82,5% mujeres. Sistemas orgánicos más afectados: cardiovascular, osteomuscular y neurológico; entre 47,5% y 27,5% de los ancianos los tenían comprometidos. Se identificaron dos comportamientos: los hombres, y las personas de edad más avanzada, con mayores grados de dependencia en las actividades básicas e instrumentales; no se determinó asociación estadística por el pequeño tamaño muestral. Las actividades básicas estaban afectadas así: entre el 67,5% y el 55% de los ancianos requería ayuda; y las actividades instrumentales estuvieron comprometidas: entre el 95% y el 75% de los ancianos son totalmente dependientes en ellas. Conclusiones: Enfermería ha de considerar la valoración de la capacidad funcional articulada al estado de salud integral de los ancianos, para orientar su cuidado y apoyar a los cuida-dores familiares. Esto además previene dependencias de cuidado innecesarias que estarían en contra de las aspiraciones del adulto mayor como individuo autónomo e independiente. Es tarea de profesionales en enfermería capacitar a cuidadores familiares sobre valoración de la capacidad funcional.

  8. New model of inverting substation for DC traction with regenerative braking system

    Science.gov (United States)

    Omar, Abdul Malek Saidina; Samat, Ahmad Asri Abd; Isa, Siti Sarah Mat; Shamsuddin, Sarah Addyani; Jamaludin, Nur Fadhilah; Khyasudeen, Muhammad Farris

    2017-08-01

    This paper presents a power electronic devices application focus on modeling, analysis, and control of switching power converter in the inverting DC substation with regenerative braking system which is used to recycle the surplus regenerative power by feed it back to the main AC grid. The main objective of this research is to improve the switching power electronic converter of the railway inverting substation and optimize the maximum kinetic energy recovery together with minimum power losses from the railway braking system. Assess performance including efficiency and robustness will be evaluated in order to get the best solution for the design configuration. Research methodology included mathematical calculation, simulation, and detail analysis on modeling of switching power converter on inverting substation. The design stage separates to four main areas include rectification mode, regenerative mode, control inverter mode and filtering mode. The simulation result has shown that the regenerative inverter has a capability to accept a maximum recovery power on the regeneration mode. Total energy recovery has increase and power losses have decreases because inverter abilities to transfer the surplus energy back to the main AC supply. An Inverter controller with PWM Generator and PI Voltage Regulator has been designed to control voltage magnitude and frequency of the DC traction system.

  9. The thermal relay design to improve power system security for the HTS cables in Icheon substation

    International Nuclear Information System (INIS)

    Lee, Hansang; Yang, Byeong-Mo; Jang, Gilsoo

    2013-01-01

    Highlights: •It is important to study thermal characteristics of the HTS cable. •The thermal relay in the Icheon substation has been developed. •Well-designed thermal relay has been verified through PSCAD/EMTDC simulations. -- Abstract: This paper proposes a model for thermal protection relay for the high temperature superconducting (HTS) cables and thermal protection scheme in Icheon substation in Korea. The thermal protection is one of the most important factors to guarantee the reliability of the HTS cable as well as power system security. The superconductivity of the HTS cables, which can be guaranteed by the liquid nitrogen near 70 K, can be threatened by the large fault current. To avoid the overheating in HTS cable and to secure the power system operation with the HTS cable, the thermal protection relay should be considered. To find the optimal thermal-protection scheme, the model for the superconducting power system has been achieved in Icheon substation and the thermal protection scheme has been verified through PSCAD/EMTDC simulation

  10. The thermal relay design to improve power system security for the HTS cables in Icheon substation

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Hansang, E-mail: hslee80@kiu.ac.kr [School of Railway and Electrical Engineering, Kyungil University, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 712-701 (Korea, Republic of); Yang, Byeong-Mo [Korea Electric Power Research Institute, Munji-dong, Yuseong-gu, Daejeon 305-760 (Korea, Republic of); Jang, Gilsoo, E-mail: gjang@korea.ac.kr [School of Electrical Engineering, Korea University, Anam-dong 5-ga, Seongbuk-gu, Seoul 136-713 (Korea, Republic of)

    2013-11-15

    Highlights: •It is important to study thermal characteristics of the HTS cable. •The thermal relay in the Icheon substation has been developed. •Well-designed thermal relay has been verified through PSCAD/EMTDC simulations. -- Abstract: This paper proposes a model for thermal protection relay for the high temperature superconducting (HTS) cables and thermal protection scheme in Icheon substation in Korea. The thermal protection is one of the most important factors to guarantee the reliability of the HTS cable as well as power system security. The superconductivity of the HTS cables, which can be guaranteed by the liquid nitrogen near 70 K, can be threatened by the large fault current. To avoid the overheating in HTS cable and to secure the power system operation with the HTS cable, the thermal protection relay should be considered. To find the optimal thermal-protection scheme, the model for the superconducting power system has been achieved in Icheon substation and the thermal protection scheme has been verified through PSCAD/EMTDC simulation.

  11. Ingledow 500 kV substation : using mixed technology switchgear solutions for replacement

    Energy Technology Data Exchange (ETDEWEB)

    Wallner, C.; Glaubitz, P. [Siemens AG, Munich (Germany); Messinger, T. [British Columbia Transmission Corp., Vancouver, BC (Canada)

    2008-07-01

    The reliability of the 500 kV equipment at the Ingledow substation operated by BC Hydro Transmission System is of critical importance due to the energy interchange with the Bonneville Power Authority in the United States and the major role of the substation in serving the energy needs of British Columbia's densely populated Lower Mainland. Presently, the 500 kV switchyard includes 10 airblast circuit breakers and the associated current transformers which are all approaching their end of service-life. In response to environmental and safety concerns, the British Columbia Transmission Corporation adopted a policy whereby new oil-filled transformers are no longer acceptable, and the replacement of existing oil-filled transformers must be oil-free. The result is that the current transformers must be either bushing-type or sulphur-hexafluoride (SF6) type. The replacement strategies for the substation equipment consider economical, environmental and seismic issues. They have just as strong an influence on the decision process as the technical, operational and reliability aspects for the particular case or switchgear replacement in the transmission system. The Ingledow case demonstrates the advantages of using mixed technology switchgear, with its compact design flowing from gas insulated switchgear (GIS) for replacement of equipment in an outdoor switchyard. The advantages of the MTS in this case offer the possibility of future reconfiguration to improve the system reliability within the existing switchyard space. 3 refs., 5 figs.

  12. Anatomia Funcional e Morfometria do Intestino no Teleostei (Pisces de Água Doce Surubim (Pseudoplatystoma coruscans - Agassiz, 1829

    Directory of Open Access Journals (Sweden)

    Seixas Filho José Teixeira de

    2001-01-01

    Full Text Available Os objetivos do presente trabalho foram estudar a anatomia funcional e a morfometria comparativas nos intestinos médio e no reto, do peixe Teleostei, surubim, Pseudoplatystoma coruscans (Agassiz, 1829 (Siluriformes, Siluroidei, Pimelodidae, de hábito alimentar carnívoro, em duas classes de tamanho, visando fornecer referência à nutrição para o ajuste de diferentes sistemas de alimentação artificial para essa espécie nativa. Por meio destes estudos concluiu-se que o intestino do surubim, sob o ponto de vista morfológico, deve ser denominado, de intestino médio e reto, devido a presença da valva ileorretal e da invaginação valvar intestinal entre esses segmentos. Em relação ao padrão de enrolamento do intestino, apesar do plano geral do intestino médio e do reto ter sido mantido, as alças do intestino médio apresentaram arranjo indefinido, não tendo sido determinado um arranjo-padrão para a espécie. O arranjo intestinal é compatível ao da maioria de peixes carnívoros, ou predominantemente carnívoro, uma vez que seu intestino é quase retilíneo; contudo, as circunvoluções das alças finais do intestino médio talvez possam ser vistas como adaptações a um possível regime onívoro, preferencialmente carnívoro. As pregas intestinais encontram-se mais complexas e desenvolvidas no intestino dos exemplares da segunda classe de tamanho. Procurando estabelecer relações entre o arranjo das pregas das mucosas e a velocidade de transporte do alimento no intestino médio da espécie estudada, sugere-se que o padrão longitudinal, com numerosas anastomoses retardam o avanço do alimento em sentido aboral, o que possibilita maior período digestivo e, conseqüentemente, maior aproveitamento dos nutrientes, pela exposição do material alimentar à mucosa intestinal por período maior, além de contribuir para a preparação do bolo fecal. As pregas da mucosa próxima ao ânus têm direção longitudinal, sugerindo auxílio na

  13. TDAH, funciones ejecutivas y atención

    OpenAIRE

    Amador, Juan Antonio; Krieger, Virginia Edith

    2013-01-01

    Este documento presenta las características del trastorno por déficit de atención con hiperactividad (TDAH), los síntomas y conductas alteradas asociadas al trastorno y los problemas más comunes de las personas con TDAH. También se describe el concepto de las funciones ejecutivas (FE), las relaciones entre TDAH y FE y algunas estrategias e instrumentos útiles para la evaluación de las FE.

  14. Programacion funcional y lambda cálculo

    Directory of Open Access Journals (Sweden)

    Jonatan Gómez Perdomo

    1998-05-01

    Full Text Available En la primera parte de este artículo se explican algunos conceptos de los lenguajes de programación, haciendo énfasis en las caracteristicas y propiedades de los lenguajes de programación funcional. En la segunda, se realiza una introducción al lambda cálculo puro, su notación, axiomas y reglas elementales.

  15. O aproveitamento de madeiras das podas da arborização viária de Maringá/PR

    Directory of Open Access Journals (Sweden)

    Carlos Humberto Martins

    2013-05-01

    Full Text Available A pesquisa tem o objetivo de elencar formas de aproveitamento das madeiras das podas da arborização viária da cidade de Maringá/PR. Foram identificadas as três espécies arbóreas mais frequentes: Caesalpinia peitophoroides (Sibipiruna, Tabebuia avellanedae (Ipê Roxo e a Tipuana tipu (Tipuana que correspondem a 56,21% do total. Propõe-se a investigação do aproveitamento da madeira para fabricação de pequenos objetos de madeira (POM, elementos estruturais para a construção civil, e para a obtenção de carvão vegetal. Constatou-se nas análises laboratoriais: o Ipê Roxo com alta densidade básica, com resistência mecânica para a produção de elementos estruturais e com elevado padrão de aproveitamento em carvão vegetal, a Sibipiruna na classe de densidade média pode ser utilizada em móveis e também em produção de carvão vegetal e a Tipuana como de densidade baixa ideal para fabricação de POM.

  16. ANÁLISE ECONÔMICO-FINANCEIRA DO APROVEITAMENTO ENERGÉTICO DO GÁS METANO PROVENIENTE DE INSTALAÇÃO DE SUINOCULTURA

    Directory of Open Access Journals (Sweden)

    Juciara Oliveira Lopes

    2017-01-01

    Full Text Available O presente trabalho objetivou analisar de maneira econômico-financeira o aproveitamento energético do gás metano proveniente das instalações da suinocultura do IFNMG, Campus Januária. Para isso, foram avaliadas duas situações diferentes: o aproveitamento do biogás a partir do biodigestor já instalado e uma segunda situação para analisar desde a instalação do biodigestor ao aproveitamento do biogás. No cenário de 10 anos foram obtidos, na situação 1 payback de 4,46 anos, VPL de R$ 38.209,42, e o TIR de 19%, e na situação 2 payback de 1,10 anos, VPL de R$ 82.698,00 e TIR de 86%. Representando assim, um investimento atraente para a instituição e possivelmente para produtores rurais no Norte de Minas Gerais, com produção suinícola similares a este estudo.

  17. Anatomia funcional e morfometria dos intestinos e dos cecos pilóricos do teleostei (pisces de água doce Brycon orbignyanus (Valenciennes, 1849

    Directory of Open Access Journals (Sweden)

    Seixas Filho José Teixeira de

    2000-01-01

    Full Text Available O objetivo do presente trabalho foi estudar a anatomia funcional e a morfometria comparativas nos intestinos médio e posterior e nos cecos pilóricos da piracanjuba (Brycon orbignyanus Valenciennes, 1849 (Characiformes, Characidae, Bryconinae. Foram conduzidos estudos anatomofuncionais e morfométricos nos intestinos médio e posterior e nos cecos pilóricos dessa espécie com hábito alimentar onívoro. Constatou-se, por meio destes estudos, que o padrão de enrolamento das alças intestinais em arranjo em N apresentou, na segunda classe de tamanho, freqüentes variações no intestino médio, mas foi compatível com os de outras espécies de hábitos alimentares similares. Os estudos da morfometria mostraram que o comprimento total do intestino e das alças intestinais e seus calibres, provavelmente, exercem função específica na absorção dos nutrientes. As relações entre o arranjo das pregas da mucosa e a velocidade de transporte do alimento no intestino médio sugerem que os padrões transversal e oblíquo retardam o avanço do alimento em sentido aboral, possibilitando maior período digestivo e melhor aproveitamento dos nutrientes, contribuindo para a preparação do bolo fecal. O comprimento e o calibre dos cecos pilóricos aumentam com o desenvolvimento do peixe, e o seu padrão de mucosa possui características anatômicas semelhantes às do intestino.

  18. Capacidade funcional, morbidades e qualidade de vida de idosos

    Directory of Open Access Journals (Sweden)

    Darlene Mara dos Santos Tavares

    2012-01-01

    Full Text Available La investigación tiene como objetivo describir el perfil demográfico, la capacidad funcional y la morbilidad de los ancianos, y verificar la calidad de vida relacionado con el número de incapacidad funcional y la morbilidad. Estudio transversal analítico llevado a cabo con 2.142 personas mayores. Los datos fueron recolectados en el hogar con un instrumento estructurado. El análisis se realizó distribución de frecuencias, F-test de ANOVA y Bonferroni (p<0,05. La mayoría eran mujeres, años, casado, años de escolaridad y los ingresos de un salario mínimo. Predominaron los adultos mayores discapacidades funcionales relacionadas con la movilidad y morbilidad, los problemas de visión más frecuente y la columna vertebral y la hipertensión. Las puntuaciones más altas de calidad de vida para las relaciones sociales y el funcionamiento de los sentidos y el más bajo para su desarrollo físico y la autonomía. El mayor número de incapacidad funcional y la morbilidad asociadas con bajas puntuaciones en la calidad de vida.

  19. Una aplicación de las funciones débilmente contractivas a problemas de valor en la frontera de funciones con valores en intervalos

    Directory of Open Access Journals (Sweden)

    Vladimir Angulo-Castillo

    2014-01-01

    Full Text Available Se estudia la existencia y unicidad de soluciones para problemas de valor en la frontera asociadas a ecuaciones diferenciales de funciones con valores en intervalos, usando la derivada de Hukuhara y algunos teoremas de punto fijo de funciones débilmente contractivas definidas en conjuntos par- cialmente ordenados.

  20. Reservatório de ardósia para sistemas de aproveitamento de água de chuva

    Directory of Open Access Journals (Sweden)

    Marcio Antonio Nogueira Andrade

    Full Text Available RESUMO No contexto da crescente pressão exercida no mundo todo sobre os recursos hídricos, qualitativa e quantitativamente, o desenvolvimento de tecnologias apropriadas para sistemas de aproveitamento de água de chuva surge como alternativa promissora. Este trabalho tem como principal objetivo apresentar uma tecnologia inovadora para armazenamento de água de chuva, trazendo como modelo a construção de um reservatório executado com placas de ardósia, com capacidade para 250 m3, que faz parte de um sistema de aproveitamento de água de chuva implantado em uma instalação suinícola no Oeste Catarinense. Nesse sistema, a água de chuva é destinada para dessedentação animal e higienização das instalações. Também são apresentados, porém com menos enfoque, os dispositivos de tratamento da água de chuva desenvolvidos no projeto. Realizou-se uma análise comparativa de custos entre esse reservatório e os comumente utilizados na região de estudo. Também foram feitas análises físico-químicas e bacteriológicas da água de chuva em diferentes pontos do sistema, a fim de verificar se a qualidade da água é adequada para os usos pretendidos. A tecnologia de construção de reservatórios de ardósia apresentou rapidez e facilidade de execução e baixo custo de construção. A ardósia, além de servir de forma para a moldagem da armadura e para a argamassagem, é um material natural e abundante na região central do Estado de Santa Catarina. As análises físico-químicas e bacteriológicas mostraram a eficiência dos dispositivos de tratamento da água de chuva aplicados neste trabalho. Por fim, observou-se que a água de chuva é adequada para dessedentação animal, já que atende às condições e padrões para as águas de Classe 3 da Resolução CONAMA 357. Deste modo, a nova tecnologia apresenta grande potencial de aplicação e viabilidade econômica para a região de estudo.

  1. Research on the Best Root Span of 500kV Substation Frame Based on Finite Element

    Science.gov (United States)

    Chen, Hao; Fang, Qing; Chen, Haoyuan

    2018-01-01

    A-shaped and steel tube structures have been widely applied when designing 500kV substation frame in China. While, compared with steel tube, angle steels have an advantage of easy-transporting, especially in oversea projects. However, researches on substation frame with angle steel were not enough. In order to find out the best root span of 500kV substation frame under similar engineering conditions, using the overseas project substation frame as an example, the substation frames with different root span have been detailed calculated, to find the best root span according to the cost of it. When the height of column is about 30m, the root suggestion value is 6.1m×3.1m. And then, the buckling analysis of the overall structure has been carried out by ANSYS, to find out that the weak part of the structure is in the middle of it. The structural adjustment is carried out for the weak part, including adjusting the web members and the chord members, to obtain a higher bearing capacity of the structure.

  2. Regulatory Impacts on Distributed Generation and Upstream Transmission Substation Expansion Planning: A Novel Stochastic Bi-level Model

    Directory of Open Access Journals (Sweden)

    F. Misaghi

    2017-06-01

    Full Text Available In this paper, a novel framework is proposed to study impacts of regulatory incentive on distributed generation (DG investment in sub-transmission substations, as well as upgrading of upstream transmission substations. Both conventional and wind power technologies are considered here. Investment incentives are fuel cost, firm contracts, capacity payment and investment subsidy relating to wind power. The problem is modelled as a bi-level stochastic optimization problem, where the upper level consists of investor's decisions maximizing its own profit. Both market clearing and decision on upgrading of transmission substation aiming at minimizing the total cost are considered in the lower level. Due to non-convexity of the lower level and impossibility of converting to single level problem (i.e. mathematical programming with equilibrium constraints (MPEC, an algorithm combing enumeration and mathematical optimization is used to tackle with the non-convexity. For each upgrading strategy of substations, a stochastic MPEC, converted to a mixed integer linear programming (MILP is solved. The proposed model is examined on a six-bus and an actual network. Numerical studies confirm that the proposed model can be used for analysing investment behaviour of DGs and substation expansion.

  3. ALGORITHMIZATION OF PROBLEMS FOR OPTIMAL LOCATION OF TRANSFORMERS IN SUBSTATIONS OF DISTRIBUTED NETWORKS

    Directory of Open Access Journals (Sweden)

    M. I. Fursanov

    2014-01-01

    Full Text Available This article reflects algorithmization of search methods of effective replacement of consumer transformers in distributed electrical networks. As any electrical equipment of power systems, power transformers have their own limited service duration, which is determined by natural processes of materials degradation and also by unexpected wear under different conditions of overload and overvoltage. According to the standards, adapted by in the Republic of Belarus, rated service life of power transformers is 25 years. But it can be situations that transformers should be better changed till this time – economically efficient. The possibility of such replacement is considered in order to increase efficiency of electrical network operation connected with its physical wear and aging.In this article the faults of early developed mathematical models of transformers replacement were discussed. Early such worked out transformers were not used. But in practice they can be replaced in one substation but they can be successfully used  in other substations .Especially if there are limits of financial resources and the replacement needs more detail technical and economical basis.During the research the authors developed the efficient algorithm for determining of optimal location of transformers at substations of distributed electrical networks, based on search of the best solution from all sets of displacement in oriented graph. Suggested algorithm allows considerably reduce design time of optimal placement of transformers using a set of simplifications. The result of algorithm’s work is series displacement of transformers in networks, which allow obtain a great economic effect in comparison with replacement of single transformer.

  4. O aproveitamento do resíduo da indústria do sisal no controle de larvas de mosquitos

    Directory of Open Access Journals (Sweden)

    Pizarro Ana Paula B.

    1999-01-01

    Full Text Available Descreve-se o aproveitamento do resíduo do desfibramento das folhas de Agave sisalana, como um larvicida para o combate a mosquitos transmissores de doenças tropicais. Durante 24 horas, larvas de Aedes aegypti e Culex quinquefasciatus foram expostas a concentrações diferentes do extrato da planta para determinar as concentrações letais. Para A. aegypti foi constatada a CL50 em 322ppm e para C. quinquefasciatus em 183ppm. Foi investigada a ação de saponinas existentes na planta, ficando evidenciado que o resíduo de A. sisalana é ativo através da interação de vários dos seus componentes. Este extrato poderá ser utilizado em campo, na concentração de 100ppm para C. quinquefasciatus com um aumento do tempo de exposição para três dias, obtendo-se uma mortalidade de 100% das larvas. Este produto, porém, não é recomendado para o controle de A. aegypti, devido à necessidade de uma alta concentração para a obtenção de 100% de mortalidade das larvas e ao fato destas se desenvolverem preferencialmente em água potável.

  5. Avaliação de um sistema de cavaqueamento de ponteiras de eucalipto para aproveitamento energético

    Directory of Open Access Journals (Sweden)

    Juliana Lorensi do Canto

    2011-12-01

    Full Text Available Os objetivos deste trabalho foram avaliar o desempenho e estimar os custos de um sistema de cavaqueamento de ponteiras de eucalipto, resultantes de colheita florestal, para aproveitamento energético em uma empresa de base florestal localizada no Estado do Pará, na Região Norte do Brasil. O sistema era composto por um picador florestal, dois tratores florestais transportadores autocarregáveis (com grua e uma carregadora frontal. A coleta de dados baseou-se em estudo de tempos e movimentos, determinação do consumo de combustível e pesagem dos cavacos produzidos. A produtividade média do sistema foi de 17,51 toneladas por hora efetiva. A eficiência operacional foi de 51,9%, devido a diversas demoras operacionais, principalmente para conserto e manutenção do picador. O transporte de cavacos foi considerado o ponto de estrangulamento do sistema, devido a ocorrências de falta de caminhão disponível no local para o carregamento. O sistema pode produzir entre 94 e 162 vezes mais energia do que consome. O custo do sistema por hora efetiva foi de R$376,56, o que representa R$21,51/t de cavacos ou R$2,70/GJ.

  6. Investigation on Transmission and Substation Facilities of Sichuan Power Grid in Wenchuan Earthquake

    Institute of Scientific and Technical Information of China (English)

    Yu Yongqing; Li Guangfan; Li Peng; Zhu Quanjun; Yuan Dalu; Wang Chengyu; Li Jinzhong; Huang Huang; Li Lixin; Zhang Xinghai; Liu Jingmin

    2009-01-01

    @@ On May 12,2008,an earthquake of Ms 8.0 hit the area around Wenchuan County,Sichuan Province,China.It has been one of the most destructive earthquakes since the founding of P.R.China in 1949.The quake caused not only tremendous loss of life and wealth,but also severe damage to transmission and substation facilities.After the disaster,an expert group from China Electric Power Research Institute (CEPRI)was sent for on-site investigation.This paper is a summary of the investigation,in which suggestions for electric equipment to resist earthquake disasters are also proponed.

  7. Funciones del Fiscal en el Sistema Procesal Penal Acusatorio Ecuatoriano

    OpenAIRE

    Guillén, Oscar Medardo

    2006-01-01

    El art.219 de la Constitución Política vigente, define el nuevo marco legal, para el ejercicio de la acción penal de instancia pública, del Ministerio Público, en concordancia con el Nuevo Código de Procedimiento Penal y la Ley Orgánica del Ministerio Público, instrumentos jurídicos que han permitido el cambio del sistema conocido como inquisitivo , caracterizado por la concentración de funciones en el juez, para dar paso al sistema acusatorio oral que se ha dicho es mas humano, democrático y...

  8. Funciones Orbitofrontales en pacientes con Demencia tipo Alzheimer

    OpenAIRE

    Solórzano Jiménez, Luis Mariano

    2016-01-01

    [ES] La DTA se caracteriza por el deterioro progresivo de la memoria y de otras áreas de la función cognitiva, tal es el caso de las funciones ejecutivas (FE), propias de la corteza prefrontal (CPF) y relacionadas con la autorregulación del comportamiento. De esta forma, los procesos asociados a las FE pueden ser de índole cognitivo (memoria de trabajo, razonamiento, resolución de problemas, planificación, secuenciación, atención sostenida, resistencia a la interferencia, utilización de feedb...

  9. Funciones Económicas en un Entorno Incierto

    OpenAIRE

    Lazzari, Luisa L; Chiodi, Jorge A; Moulia, Patricia I

    2015-01-01

    El mundo está atravesando una de las crisis económicas más profundas de los últimos tiempos. Los escenarios actuales y futuros están plagados de incertidumbre que, en general, no se considera en el análisis de las distintas funciones económicas de interés para el desarrollo del negocio, y la realidad se representa mediante modelos estáticos y casi perfectos del comportamiento de los mercados. La teoría de conjuntos borrosos permite construir modelos adecuados a partir de realidades inciertas ...

  10. Desenvolvimento de um produto dietetico funcional para idosos.

    OpenAIRE

    Fabiane La Flor Ziegler

    2006-01-01

    Resumo: O principal objetivo da presente pesquisa foi desenvolver um produto dietético funcional para idosos desnutridos. Para tal, realizou-se inicialmente a caracterização físico-química e nutricional das fontes protéicas: isolado protéico do soro de leite bovino (WPI) e hidrolisado de colágeno bovino (HCB), buscando-se adequar a proporção entre elas, bem como, avaliar algumas de suas propriedades físicas, composição, perfil de aminoácidos e propriedade nutricional. Posteriormente foi reali...

  11. Cuatro funciones estratégicas de la diplomacia corporativa

    Directory of Open Access Journals (Sweden)

    Juan Luis Manfredi-Sánchez

    2017-12-01

    Full Text Available La diplomacia corporativa es el desarrollo instrumental de la estrategia que ordena la relación con los poderes públicos y privados en un entorno complejo y globalizado. Las corporaciones actúan como poderes diplomáticos en la representación, la negociación, la protección y la promoción de los intereses, las cuatro funciones básicas de la diplomacia que establece la Convención de Viena de 1961. La tarea de la diplomacia corporativa es una fuente de innovación directiva y una oportunidad de desarrollo profesional.

  12. Alteraciones de la conectividad funcional en la esquizofrenia

    OpenAIRE

    Rodríguez de la Pinta, Cristina

    2016-01-01

    La esquizofrenia, es uno de los trastornos psicóticos más prevalente y grave a nivel mundial. La idea de este trabajo es revisar algunos de los artículos publicados acerca de la conectividad en esta enfermedad, ofreciendo así una visión del funcionamiento cerebral de estos pacientes. No hay nada definitivo aún, pero la gran mayoría de los estudios coinciden en que la alteración de la conectividad funcional entre las diferentes redes neuronales es una de las bases fundamental...

  13. An improved method for predicting the lightning performance of high and extra-high-voltage substation shielding

    Science.gov (United States)

    Vinh, T.

    1980-08-01

    There is a need for better and more effective lightning protection for transmission and switching substations. In the past, a number of empirical methods were utilized to design systems to protect substations and transmission lines from direct lightning strokes. The need exists for convenient analytical lightning models adequate for engineering usage. In this study, analytical lightning models were developed along with a method for improved analysis of the physical properties of lightning through their use. This method of analysis is based upon the most recent statistical field data. The result is an improved method for predicting the occurrence of sheilding failure and for designing more effective protection for high and extra high voltage substations from direct strokes.

  14. Assessment of occupational exposure to magnetic fields in high-voltage substations (154/34.5 kV)

    International Nuclear Information System (INIS)

    Helhel, S.; Ozen, S.

    2008-01-01

    This work proposes the survey of magnetic field measurements taken in 154/31.5 kV substations in the city of Antalya for occupational exposure assessment. For measurements, three substations have been taken into account, where four occupants are present for each 8 h of shift, which means 12 occupants are present during the day. Operator desks at three different substations read a lowest magnetic field of 0.3 μT at minimum loaded season and reached up to 1 μT at maximum loaded season, which means operators exposed to a magnetic field of ≥ 0.3 μT 8 h d -1 . In switch gear regions, maximum magnetic field reading is 23 μT at minimum loaded season and reached up to 70 μT. Outdoor magnetic field measurement at circuit breaker region goes up to 62 μT with respect to operator heights. (authors)

  15. Optimisation of the high voltage substation direct lightning stroke protection system; Optimisation de systeme de protection des postes haute tension contre le coup de foudre direct

    Energy Technology Data Exchange (ETDEWEB)

    Wahab, Y.A.; Abidin, Z.Z. [Tenaga Nasional Berhad (Malaysia); Sadovic, S. [Sadovic Consultant, 92 - Asnieres (France)

    2005-04-01

    This paper presents results of the study dealing with the application of lightning rods for the substation direct stroke protection. Lightning rod locations and heights are determined using simulation software Sigma ssh. This software uses a three-dimensional Monte Carlo electro geometric modeling. Study results for one particular 275 kV and one 500 kV substation are presented. (authors)

  16. The smart kiosk substation for Smart Grids; Die intelligente Ortsnetzstation fuer das Smart Grid

    Energy Technology Data Exchange (ETDEWEB)

    Weber, Thomas [Schneider Electric Energy GmbH, Frankfurt (Germany); Vaupel, Steffen [Schneider Electric Energy GmbH, Kassel (Germany)

    2012-07-01

    The changes in the energy supply towards current and future needs call for new technologies and solutions resulting in the ''Smart Grid''. The smart kiosk substation describes an essential component for the additionally required optimization of the energy distribution networks - a complete functional unit of an economic and efficient compact substation, which successfully operates within the framework of a pilot project since the beginning of this year. In addition to an adjustable 630-kVA-local distribution transformer, control and signalling functions, to manage fault situations are included, allowing for the optimization of outage times. Measurement of network quality and an economic network protection complete the range of services. As is customary during the development of new products, high availability and free of maintenance (through utilization of standard components) whilst complying with current standards and regulations are being taken into account. Along with the demand for regenerative feed-ins to feed reactive power into the network as required, the regulating device allows for a much improved use of the voltage limits - in the low voltage grid as well. It is to be expected that the network expansion of the low voltage grid thus can be significantly optimized through these possibilities of regulation. (orig.)

  17. Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital

    Directory of Open Access Journals (Sweden)

    Carlos Javier Renedo

    2018-02-01

    Full Text Available Transformers are installed in power distribution systems to perform changes in supply voltage. Large consumers often have several transformers installed in parallel to ensure continuity of supply in the event of failure. These machines can achieve very high efficiency, but their efficiency is not constant since it depends on the power demanded at each time. Therefore, the level of efficiency that correspond to the operation of a specific transformer depends on two factors: machine technical characteristics and electrical load. In this work, the authors have proposed a methodology which shows the optimal number of transformers to be connected at each period in the substations of a large Spanish hospital, in order to achieve the maximum seasonal efficiency of these machines. The results of the energy saving are determined with respect to the current situation, in which all the transformers are permanently connected. On the other hand, the European Union has established a new regulation that sets the minimum energy efficiency requirements for new power transformers. This efficiency improvement is proposed to be applied gradually in two stages, a first limit came into force in 2015, while a more restrictive approach will appear in the year 2021. This work has also studied the potential energy savings that would occur when the substations of the hospital have more efficient transformers complying with the new European Regulation 548/2014.

  18. THE CALCULATION OF THE ENERGY RECOVERY ELECTRIFIED URBAN TRANSPORT DURING THE INSTALLATION DRIVE FOR TRACTION SUBSTATION

    Directory of Open Access Journals (Sweden)

    A. A. Sulim

    2014-01-01

    Full Text Available At present a great attention is paid to increasing of energy efficiency at operated electrified urban transport. Perspective direction for increasing energy efficiency at that type of transport is the application of regenerative braking. For additional increasing of energy efficiency there were suggested the use of capacitive drive on tires of traction substation. One of the main task is the analysis of energy recovery application  with drive and without it.These analysis demonstrated that the calculation algorithms don’t allow in the full volume to carry out calculations of amount and cost of energy recovery without drive and with it. That is why we see the current interest to this topic. The purpose of work is to create methods of algorithms calculation for definite amount and cost of consumed, redundant and recovery energy of electrified urban transport due to definite regime of motion on wayside. There is algorithm developed, which allow to calculate amount and cost of consumed, redundant and recovery energy of electrified urban transport on wayside during the installation capacitive drive at traction substation. On the basis of developed algorithm for the definite regime of wagon motion of subway there were fulfilled the example of energy recovery amount and its cost calculation, among them with limited energy intensity drive, when there are 4 trains on wayside simultaneously.

  19. The insulation coordination and surge arrester design for HTS cable system in Icheon substation

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Hansang, E-mail: Hansang80@korea.ac.kr [School of Railway and Electrical Engineering, Kyungil University, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 712-701 (Korea, Republic of); Yoon, Dong-Hee [Department of New and Renewable Energy, Kyungil University, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 712-701 (Korea, Republic of); Lee, Seung-Ryul [Korea Electrotechnology Research Institute, Naeson-dong, Uiwang-si, Gyeonggi-do 437-080 (Korea, Republic of); Yang, Byeong-Mo [Korea Electric Power Research Institute, Munji-dong, Yuseong-gu, Daejeon 305-760 (Korea, Republic of); Jang, Gilsoo, E-mail: gjang@korea.ac.kr [School of Electrical Engineering, Korea University, Anam-dong 5-ga, Seongbuk-gu, Seoul 136-713 (Korea, Republic of)

    2013-01-15

    Highlights: ► It is necessary to study lightning response of the HTS cable. ► The analytic model has been developed for the HTS cable in the Icheon substation. ► Well-designed surge arrester has been verified through PSCAD/EMTDC simulations. -- Abstract: This paper proposes an insulation coordination and surge arrester design for HTS (High-Temperature Superconducting) cable system in Icheon substation in Korea. In the aspect of the economic analysis, since the HTS cable is very expensive, the insulation coordination to prevent the dielectric breakdown caused by the lightning surge should be considered carefully. Also, in the aspect of the power system reliability, since the HTS cable has much more capacity compared than conventional power cables and the ripple effect from the HTS cable failure may lead to the wide area blackout, an intensive study for insulation coordination from lightning surge is one of the most important considerations. In this paper, the insulation coordination for lightning surge is verified using HTS cable and power equipment models and the design of the proper surge arrester is proposed.

  20. A health examination of railway high-voltage substation workers exposed to ELF electromagnetic fields.

    Science.gov (United States)

    Baroncelli, P; Battisti, S; Checcucci, A; Comba, P; Grandolfo, M; Serio, A; Vecchia, P

    1986-01-01

    This is a cross-sectional survey on the health conditions of railways workers active in 258 interconnection and conversion substations all over Italy. Measurements performed in both kinds of substations operating at 220 kV have shown that maximum levels of the electric field strength and of the magnetic flux density at 50 Hz are of the order of 5 kV/m and 15 microT, respectively. Three subject groups, differently exposed (1, 10, 20 h/week), and an unexposed control group, for a total number of 627 workers, constitute the population at study. All subjects underwent a general medical examination, laboratory investigations, and a series of selected examinations relative to three systems (nervous, cardiovascular, and haematopoietic) considered at higher risk. No differences have been found between the exposed and the control groups. It is concluded that workers exposed to ELF electromagnetic fields of moderate strength do not show the presence of clear effects on their state of health.

  1. IEEE 693 seismic qualification of composites for substation high-voltage equipment

    Energy Technology Data Exchange (ETDEWEB)

    Schiff, A.J. [Precision Measurement Instruments, Los Altos Hills, CA (United States); Kempner, L.Jr. [Bonneville Power Administration, Vancouver, BC (Canada)

    2004-07-01

    Standard 693-1997 of the Institute of Electrical and Electronic Engineers (IEEE) is the recommended practice for seismic design of substations. It represents a significant improvement in the way the power industry seismically qualifies substation high-voltage equipment. This paper described the use of IEEE Standard 693 for hollow-core composite insulators that are used on high-voltage transformers and demonstrated that changes are warranted. The following four failure modes associated with the composite insulator were discussed: bond degradation, bond failure, tube degradation and tube layer delamination. The authors evaluated the IEEE 693 qualification procedure of time history shake-table and static-pull tests and were concerned about acceptance criteria. It was shown that acceptance criteria are not valid for qualifying hollow-core composites and that static-pull tests are needed after the vibration qualification tests are completed. It was suggested that more research is warranted to determine if bonding at the top part of the flange can be eliminated, thereby eliminating bond degradation. The resulting increase in system damping would improve the dynamic response of the unit. 1 ref., 10 figs.

  2. Dependencia funcional y bienestar en personas mayores institucionalizadas

    Directory of Open Access Journals (Sweden)

    María Teresa Rodríguez Díaz

    2014-06-01

    Full Text Available El presente estudio tiene como objetivo evaluar el bienestar emocional de las personas mayores de 60 años en relación al grado de dependencia funcional. Como indicadores del bienestar se evalúan los niveles de depresión (Yesavage y ansiedad (STAI-R, la satisfacción vital (CSV y la ansiedad ante la muerte (DAS. Se ha realizado un estudio descriptivo transversal en un grupo de personas mayores de 60 años (n=103. Los datos se han recogido usando cuestionarios estandarizados. Para el análisis de los datos se han utilizado correlaciones bivariadas entre las principales medidas, análisis univariado (ANOVA y la prueba de Bonferroni para comprobar las diferencias significativas entre los grupos (p< .05. Los resultados indican que se encuentran diferencias significativas entre los grupos de dependencia para la edad, deterioro cognitivo, depresión y ansiedad ante la muerte. En conclusión, se encuentra una relación directa entre el grado de dependencia funcional y el nivel de malestar emocional.

  3. Availability analysis of high voltage substations considering its main equipment; Analise de disponibilidade de subestacoes de alta tensao considerando seus principais equipamentos

    Energy Technology Data Exchange (ETDEWEB)

    Santos, R.C. [Universidade Federal do ABC (UFABC), Santo Andre, SP (Brazil)], E-mail: ricardo.santos@ufabc.edu.br; Basseto, B.A.; Cugnasca, P.S.; Almeida Junior, J.R.; Camargo Junior, J.B. [Universidade de Sao Paulo (USP), SP (Brazil). Escola Politecnica], Emails: ricardo.santos@ufabc.edu.br, joao.camargo@poli.usp.br

    2009-07-01

    This paper evaluates the availability of electric power substations, based on Monte Carlo simulation and Fault Tree Analysis, which can be used in a larger way, considering various scenarios, usually founded. The main fallouts modes considered in the availability analysis of power systems, as well as the main methods applied to reach this goal are discussed. The availability indexes of the Monte Carlos simulation are sufficient to indicate the critical points of the power system, and to make comparisons between different substations, related to the performance levels. Through these indexes it is possible to evaluate the impact of a switching action in a determined substation. For this, the substation studied indexes are compared before and after the switching action be considered to the substation in reference.

  4. 750V DC substation facility of electric railway for PUTRA, Malaysia; Malaysia PUTRA muke DC750V dentetsuyo chokuryu henden setsubi

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-02-29

    The first subway was put into full service operation in Kuara Lumpur, Malaysia on July 21. This east-west subway of 29km runs from Kelana Jaya through the downtown KLCC famous for the twin tower to Terminal PUTRA including 24 stations. As power facilities for the electric railway, 2 receiving substations and 13 DC substations were provided. The subway transforms voltage from 132kV to 33kV at the receiving substations, and from AC 33kV to DC 750V at the DC substations to supply power to trains. Features of these facilities are as follows. (1) Gas-insulated switchgears (GIS) and silicon oil-filled transformers are adopted from the viewpoint of disaster prevention. (2) Regenerative power from trains is consumed by the regenerative resistance equipment (resistor control using GTO device) installed in the substations. (3) The fourth-rail system is adopted as current collection system of trains. (translated by NEDO)

  5. The Mounting process and dielectric tests of the Parque Caballero armored substation in SF6(220 Kv); Montaje y pruebas dielectricas de la estacion blindada en gas SF6 (220 kV) 'Parque Caballero'

    Energy Technology Data Exchange (ETDEWEB)

    Decoud, Carlos; Bobadilla, Alberto [ANDE - Administracion Nacional de Electricidad, Assuncion (Paraguay)

    2001-07-01

    This document approaches the aspects referring to the mounting and also dielectric tests for the Parque Caballero armored substation in SF6. This type of installation represents a innovation regarding substations in urban centres. The most relevant items in relation to the mounting process are shown in a summarized way, as well as the aspects related to dielectric tests executed during the substation commissioning.

  6. Análise de risco do aproveitamento da água de chuva para uso não potável em edificações

    OpenAIRE

    Karine Bassanesi

    2014-01-01

    O presente trabalho de mestrado contém uma revisão bibliográfica sobre a conservação da água, o aproveitamento pluvial, qualidade e tratamento da água, legislações e análise de risco. Foi constatado que os sistemas de aproveitamento pluvial variam bastante de tipologia e seria importante poder correlacionar a água precipitada com os usos e os modelos para cada situação. Assim, para o presente trabalho foi utilizada a análise de risco com enfoque na análise preliminar de perigos. Com os estudo...

  7. Aplicação para o estudo do aproveitamento de águas pluviais para usos urbanos não potáveis

    OpenAIRE

    Oliveira, F. S. B. F.; Almeida, M. C.; Leitão, J. P.

    2012-01-01

    A recolha e utilização das águas pluviais embora tenha sido utilizada em Portugal, em diversas zonas do país, foi sendo abandonada devido à expansão generalizada dos sistemas de abastecimento de água. No entanto, num enquadramento de uso mais eficiente da água, considerando a adequação da qualidade ao tipo de uso, o aproveitamento local da água pluvial é cada vez mais encarado como uma medida adequada. Neste artigo é apresentada uma aplicação para avaliar os benefícios da insta...

  8. A qualidade do sono, o aproveitamento escolar e o stress em adolescentes que permacem em frente ao computador durante a noite

    OpenAIRE

    Gema Galgani de Mesquita Duarte

    2007-01-01

    Resumo: A qualidade do sono, o aproveitamento escolar e o stress em adolescentes que permanecem em frente ao computador durante a noite. 2007. 234p. Professor Doutor Rubens Nelson Amaral de Assis Reimão. Dissertação (Mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas, Departamento da Saúde da Criança e do Adolescente. INTRODUÇÃO: O sono representa importante papel na vida do homem, influenciando as condições físicas, psicológicas e sociais. Está intimamente ligado ao...

  9. Aproveitamento dos subprodutos da extra??o do ?leo do pau-rosa (Aniba rosaeodora Ducke) para a obten??o de bioprodutos

    OpenAIRE

    Cust?dio, Dayana Lacerda

    2013-01-01

    A fam?lia Lauraceae destaca-se por apresentar esp?cies com grande import?ncia econ?mica, dentre elas Aniba rosaeodora Ducke, utilizada na extra??o de ?leo essencial. Seu ?leo essencial ? formado majoritariamente por linalol, utilizado como fixador na perfumaria. Os subprodutos da extra??o do pau-rosa s?o geralmente empregados como fonte de energia para o aquecimento das caldeiras nas pr?prias usinas. Estes subprodutos cont?m subst?ncias com grande potencial de aproveitamento como biopro...

  10. ESTUDO DO APROVEITAMENTO DAS VÍSCERAS DOS MOLUSCOS ESCARGOT (Achatina fulica) E ARUÁ (Pomacea lineata) PARA INCORPORAÇÃO EM RAÇÃO ANIMAL

    OpenAIRE

    S. E. R. BARBOZA; P. F. ROMANELLI

    2008-01-01

    O objetivo deste trabalho foi estudar o aproveitamento das vísceras - subprodutos, dos moluscos escargot e aruá. As vísceras foram processadas na forma de farinha e suas características físico-químicas (composição centesimal, cálcio, fósforo, digestibilidade em pepsina, índice de acidez) e microbiológicas (Salmonella sp) foram comparadas aos padrões de qualidades exi...

  11. First operation experiences from a 30 kV 104 MVA HTS power cable installed in a utility substation

    DEFF Research Database (Denmark)

    Willen, D.; Hansen, F.; Daumling, M.

    2002-01-01

    realistic conditions in the substation of Amager (AMK). Approximately 50 000 private and business customers are supplied from this cable. The load can be adjusted from 20% to 100% of the power supplied and the number of branches connected can be altered. This and other early HTS power installations...... are expected to act as ice-breakers for the HTS technology...

  12. Sickness absence from 1978 to 1992 of Electricite de France (EDF) workers exposed to ELF-EMF: the substation group

    International Nuclear Information System (INIS)

    Souques, M.; Dab, W.; Lambrozo, J.; Chevalier, A.; Coing, F.

    1996-01-01

    Electromagnetic fields are suspected of many health effects, including cancers, immunity and fertility disorders, congenital malformations, suicides and depression.... Although the results of all studies are contradictory and no biological mechanism has been found, populations are concerned about this matter. This study analyzes the absence from work of some EDF employees who are a priori the most professionally exposed to ELF EMF. Absence from work is taken as an health indicator. Although it is not specific, it can be predictive of serious health problems. The specific context of EDF has made it possible to collect and analyze the medical aspect of absence from work, that is rare in France. We were interested with employees working with high voltage (over 90 kV). Three job categories have been selected: live line workers, substation maintenance workers and substation exploitation workers (called in the company the ATEX). The first group concerned the live linemen and the results were exposed previously. It appeared they had more accidents at work, but this was more related to the job of lineman rather than to the EMF exposure. Nevertheless, substation workers have an exposure less intensive but longer than live linemen. We present here the result about the absenteeism of the substation workers, maintenance and exploitation. (author)

  13. Estreñimiento funcional en pediatría

    OpenAIRE

    Luis De la Torre Mondragón; Gabriela Hernández Vez

    2014-01-01

    El estreñimiento es un problema común y es una de las principales causas de consulta en la edad pediátrica, sus complicaciones indican un problema en el diagnóstico, en el tratamiento, o en ambos. Este tra- bajo está dirigido a los médicos que atienden niños con estreñimiento funcional e intenta explicar, de una manera práctica, cómo diagnosticar este problema destacando la información imprescindible que se debe obtener de la historia clínica y los estudios auxiliares de diagnóstico que puede...

  14. Óleo funcional na dieta de vacas leiteiras

    OpenAIRE

    Jesus, Elmeson Ferreira de [UNESP

    2015-01-01

    O presente estudo teve como objetivo avaliar os efeitos da inclusão de óleo funcional composto de ácido anacárdico, cardol e cardanol (óleo da castanha de cajú) e ácido ricinoleico (óleo de mamona) na dieta de vacas em lactação sobre consumo, digestibilidade aparente total da matéria seca e nutrientes, fermentação ruminal, produção e composição do leite, síntese de proteína microbiana, perfil metabólico, balanço de nitrogênio e energia. Foram utilizadas vinte e quatro vacas pluriparas da raça...

  15. Concepto de límite funcional : aprendizaje y memoria

    Directory of Open Access Journals (Sweden)

    Tomás Ortega del Rincón

    2013-05-01

    Full Text Available El presente artículo forma parte de un proyecto de investigación sobre el concepto de límite funcional en el que se viene trabajando desde hace varios años. En este caso, se contrasta si la noción de límite ligada a la definición métrica perdura en la memoria de los alumnos más que la definición como aproximación óptima dada por Blázquez y Ortega en 2002. Se trata de un estudio empírico realizado con alumnos de Ingeniería de la Universidad Nacional de San Luis (Argentina, que en cursos anteriores habían estudiado ambas conceptualizaciones.

  16. Funciones de la vitamina E: Actualización

    Directory of Open Access Journals (Sweden)

    Carmen Febles Fernández

    2002-04-01

    Full Text Available La vitamina E agrupa diferentes compuestos, dentro de los cuales se incluyen los tocoferoles y los tocotrienoles. El más importante en la especie humana es el RRR-alfa-tocoferol. Una de las funciones más importantes atribuidas a la vitamina E es su acción antioxidante. No obstante, se han observado otras no relacionadas con esta acción. Entre estas se encuentran sus efectos sobre la proliferación celular y la acción fagocítica en el sistema inmune, que a su vez se relacionan con el efecto de esta vitamina como mensajero del estado oxidativo celular. Paralelamente, existen evidencias de su relación con la apoptosis. En este trabajo pretendemos profundizar en estas funciones de la vitamina E por sus enormes potencialidades de utilización en la terapia de enfermedades médicas y estomatológicas.Vitamin E comprises different compounds such as tocopherols and tocotrienols. The most important in the human species is RRR-alpha-tocopherol. One of the main functions attributed to vitamin E is its antioxidant action. However, other functions have been observed that are not connected with this action, as its effects on cellular proliferation and the fagocitic action in the immune system that is related at the same time to the effect of this vitamin as a messenger of the oxidative cellular state. Parallel, there are other evidences of its relationship with apoptosis. In this paper we intend to go deep into these functions of vitamin E due to its great potentialities to be used in the therapy of medical and dental diseases.

  17. Resonancia magnética funcional Functional magnetic resonance

    Directory of Open Access Journals (Sweden)

    Erick Sell

    2007-01-01

    Full Text Available La resonancia magnética funcional (RMNf es un estudio no invasivo de mapeo funcional cerebral, cuya señal obtenida en secuencias T2* es dependiente del nivel de oxigenación sanguínea (BOLD. Este estudio se agrega actualmente a otros muchos empleados en el abordaje de pacientes candidatos a cirugía de epilepsia, para localizar lenguaje y función motriz previa a planear la cirugía. Tiene una concordancia con el test de WADA de cerca del 90%. El uso concomitante de registro encefalográfico y RMNf es técnicamente difícil, pero una vez filtrados los artefactos presenta un patrón de activación significativamente discordante con el foco de actividad interictal. Este hallazgo podría obedecer a redes complejas de actividad epiléptica, y promete ser un útil instrumento en la investigación de la fisiopatología del tejido epileptogénico.Functional magnetic resonance imaging (fmri is a non-invasive functional brain mapping technique ased on blood oxygenated level dependent signal (BOLD. It is obtained during T2* weighted imaging MRI studies. fmri aids in the localization of language and motor function for patients candidates for epilepsy surgery, and has up to a 90% concordance with WADA test. Even though synchronous recording of fmri and EEG is technically challenging, it shows a discordant pattern of activation when compared with EEG or electrocorticography. This finding could be due to complex epileptic networks, and overall this study technique has the potential to contribute to further research into epileptic network and epilepsy physiopathology.

  18. Entrenamiento funcional del core: eje del entrenamiento inteligente

    Directory of Open Access Journals (Sweden)

    Iván Dario Pinzón Ríos

    2015-06-01

    Full Text Available Antecedentes: La evolución del entrenamiento físico busca la optimización de la salud y el bienestar, como piedra angular de todo programa de ejercicio. El Entrenamiento Funcional (EF es recomendable para optimizar el control postural del core, mejorando el balance y la ejecución de actividades de la vida diaria.  Objetivo: Revisar la definición, elementos constitutivos, características e implicaciones del EF del core en el movimiento corporal humano (MCH y la salud desde la perspectiva del fisioterapeuta. Metodología: Se incluyeron artículos en inglés y español de las bases Pubmed, Scielo y Ebsco; adicionalmente se incluyeron fuentes electrónicas e impresas y libros. Resultados: 56 documentos cumplieron los criterios de inclusión. La definición más adoptada de EF fue entrenar con un propósito buscando obtener un efecto positivo en la aptitud física. Las implicaciones del EF en el MCH, se relacionan con la ganancia y mejoría de la estabilidad. La propuesta de EF enfocada a las actividades de la vida diaria incluye fases que permiten adquirir la estabilidad hasta lograr el desarrollo de movimiento que demanden más agilidad. En la planificación del EF se deben estructurar los procesos a ejecutar considerando el criterio de funcionalidad. Para organizar la sesión del EF, el fisioterapeuta cuenta con tres maneras de planificar la sesión: globales, por hemisferios y por grupos musculares. Conclusión: La fundamentación teórica sobre el EF permite al fisioterapeuta comprender y determinar cómo esta modalidad de intervención repercute de manera positiva sobre el desempeño funcional y calidad de vida de los sujetos.

  19. Final environmental assessment for vegetation control at VHF stations, microwave stations, electrical substations, and pole yards

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-10-13

    Southwestern Power Adm. operates very high frequency (VHF) and microwave radio stations, electrical substations, and pole yards for electric power transmission throughout AR, MO, and OK. Vegetation growth at the stations must be suppressed for safety of operation and personnel. Southwestern has been using a combination of mechanical/manual and herbicide control for this purpose; Federally- mandated reductions in staff and budgetary resources require Southwestern to evaluate all potentially efficient methods for vegetation control. Three alternatives were examined: no action, mechanical/manual control, and (proposed) a combination of mechanical/manual and herbicide control. Environmental impacts on air and water quality, wetlands, wildlife, endangered species, archaeological and other resources, farmland, human health, transportation, etc. were evaluated.

  20. Seminoe-Kortes transmission line/substation consolidation project, Carbon County, Wyoming

    Energy Technology Data Exchange (ETDEWEB)

    1990-07-01

    The existing switchyards at Western Area Power Administration's (WESTERN) Seminoe and Kortes facilities, located approximately 40 miles northeast of Rawlines, Carbon County, Wyoming, were constructed in 1939 and 1951, respectively. The circuit breakers at these facilities are beyond or approaching their service life and need to be replaced. In addition, the switchyards have poor access for maintenance and replacement of equipment, and their locations create potential for oil spills into the North Platte River. WESTERN is proposing to consolidate the switchyard facilities into one new substation to provide easier access, restore proper levels of system reliability, and decrease the potential for oil contamination of the river. This environmental assessment (EA) was prepared to evaluate the impacts of the proposed Seminoe-Kortes Consolidation Project. 57 refs., 12 figs., 8 tabs.

  1. Study on ventilation and noise reduction in the main transformer room in indoor substation

    Directory of Open Access Journals (Sweden)

    Hu Sheng

    2016-01-01

    Full Text Available The noise emission should be considered in the ventilation and cooling design for the main transformer room of indoor substation. In this study, based on Soundplan software, effects of four common ventilation and cooling schemes on the cooling and sound insulation were compared. The research showed that the region with low noise requirement, the ventilation could be set on the outer wall or on the door of the main transformer room, while the region with high noise requirement, air inlet muffler or ventilation through the cable interlayer under the main transformer room must be used. All of the four kinds of ventilation schemes, ventilation through the cable interlayer is the best in cooling and noise reduction.

  2. Type B investigation of electrical fault in 351 Substation, December 4, 1994

    International Nuclear Information System (INIS)

    Debban, H.L.; Shearer, C.A.; Boger, R.M.; McDonald, G.P.; Eyre, L.E.; Dell, L.D.; Kelly, D.S.

    1995-02-01

    On December 4, 1994, at 2132:10 hours, an electrical failure of a cable-tapping splice resulted in a fire in the 300 Area of the DOE Hanford Site. The fire occurred in the yard of Substation 351 in electrical Vault R122V, where the cable-tapping splice was located. The fire incinerated all cables passing to and through the vault causing them to fail. The failure of the cables resulted in a power outage to twenty customers in the 300 Area. The vault was electrically isolated, and power was restored to the electrical distribution system at 2311 hours. This report contains the accident scenario, accident analysis, direct cause and root and contributing causes

  3. EUROPE AND BEYOND: THE DEVELOPMENT OF SUB-STATE PARADIPLOMACY WITH SPECIAL REFERENCE TO CATALONIA

    Directory of Open Access Journals (Sweden)

    Gary CHAMBERS

    2012-12-01

    Full Text Available This article will argue that the locus of effective political power is no longer monopolised by national governments but is effectively distributed between national, regional and international levels. Subnational governments are no longer minor actors in the area of intergovernmental collaboration. This article will explore the phenomenon of substate paradiplomacy in order to highlight the transformation of the European nation-state as a result of the combined forces of globalisation and regionalisation. It seems likely in the Catalan case that the regional government is attempting to raise its international profile while ensuring that its promotion of Catalan interests on the EU and international level does not conflict with those of Spain.

  4. Experience in the installation of a microprocessor system for controlling converter units of the Vyborg substation

    International Nuclear Information System (INIS)

    Gusakovskii, K. B.; Zmaznov, E. Yu.; Katantsev, S. V.; Mazurenko, A. K.; Mestergazi, V. A.; Prochan, G. G.; Funtikova, S. F.

    2006-01-01

    The experience in the installation of modern digital systems for controlling converter units at the Vyborg converter substation on the basis of advanced microprocessor devices is considered. It is shown that debugging of a control and protection system on mathematical and physical models does not guarantee optimum control of actual converter devices. Examples of advancing the control and protection system are described, the necessity for which has become obvious in tests of actual equipment. Comparison of oscillograms of processes before optimization of the control system and after its optimization and adjustment shows that the digital control system makes it possible to improve substantially the algorithms of control and protection in the short term and without changing the hardware component

  5. Audible Noise Measurement and Analysis of the Main Power Apparatus in UHV GIS Substations

    Directory of Open Access Journals (Sweden)

    Zhou Nian Guang

    2016-01-01

    Full Text Available Investigation of audible noise characteristics of the main power apparatus in UHV GIS substations provides essential statistics for the noise prediction and control. Noise pressure level, spectrum and attenuation characteristics of the main transformers and high voltage (HV reactors are measured and analyzed in this paper. The result shows that the main transformer and HV reactor have identical A-weighted equivalent sound pressure level. The medium- and low-frequency noises are the primary components in the spectral. More attention should be paid to the low-frequency bands in the noise control process. The noise of cooling fan has a large influence on that of the main transformer. Without the consideration of corona noise, the average A-weighted sound pressure level shows an overall decreasing trend with the increase of the propagation distance. Obvious interference phenomenon of the noises at 100 and 200Hz exists in the noise propagation process.

  6. Type B investigation of electrical fault in 351 Substation, December 4, 1994

    Energy Technology Data Exchange (ETDEWEB)

    Debban, H.L.; Shearer, C.A.; Boger, R.M.; McDonald, G.P. [ICF Kaiser Hanford Co., Richland, WA (United States); Eyre, L.E.; Dell, L.D.; Kelly, D.S. [Westinghouse Hanford Co., Richland, WA (United States)

    1995-02-01

    On December 4, 1994, at 2132:10 hours, an electrical failure of a cable-tapping splice resulted in a fire in the 300 Area of the DOE Hanford Site. The fire occurred in the yard of Substation 351 in electrical Vault R122V, where the cable-tapping splice was located. The fire incinerated all cables passing to and through the vault causing them to fail. The failure of the cables resulted in a power outage to twenty customers in the 300 Area. The vault was electrically isolated, and power was restored to the electrical distribution system at 2311 hours. This report contains the accident scenario, accident analysis, direct cause and root and contributing causes.

  7. Avaliação da indústria de equipamentos para aproveitamento de fontes renováveis de energia

    Directory of Open Access Journals (Sweden)

    Fernando Sérgio Bonanni

    1991-12-01

    Full Text Available O presente trabalho, incentivado pelo Conselho Nacional de Desenvolvimento Científico e Tecnológico - CNPq, procurou avaliar e identificar o "estado da arte" da tecnologia industrial brasileira de equipamentos de pequeno e médio porte para aproveitamento de fontes renováveis de energia. O projeto atuou nas seguintes áreas: Pequenas Centrais Hidrelétricas (PCH, Energia Solar, Energia Eólica, Biodigestores e Equipamentos de Biogás e Gaseificadores de combustíveis sólidos (Gasogênios, não somente "identificando" como "localizando" os atuais fabricantes de equipamentos utilizados no aproveitamento e renovação da energia. O projeto focalizou ainda os aspectos econômicos e financeiros das indústrias pesquisadas, tais como: caracterização e evolução recente, sua produção industrial em mercado atual e futuro, além das suas dificuldades na produção e comercialização de seus produtos.This work, sponsored by the Brazilian Research Council, carried out a sectorial appraisal of the manufacturers of equipment that use renewable energy sources. The survey was executed in Small Hydroelectric Plants, Solar Energy, Eolic Energy, Biogas and Gasification of solid combustible identifying the manufacturers and their localization. The survey pointed out the industries economical and financial aspects, as well as, the difficulties in producing and trading their products.

  8. The evolution of the Luz y Fuerza del Centro substations. Volume 2; Evolucion de las subestaciones de Luz y Fuerza del Centro. Volumen 2

    Energy Technology Data Exchange (ETDEWEB)

    Carranza Ramirez, Sergio [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

    1997-12-31

    This document cites historical background of how the Luz y Fuerza del Centro substations have evolved up to nowadays. A brief description is made of one electric substation, the substation design criteria are mentioned, since it must comply with the requirements of reliability, service continuity, service quality, economy, geographical location, just for mentioning some of them. The more utilized arrangements of the Luz y Fuerza del Centro substations are described. In the same manner, the remote control substations are described mentioning the main elements of this type of substations. Mention is made also of the technological incorporations that have been made to the substations and the perspectives there are from these. One line diagrams of the electric substations are shown, as well as from power plant substations [Espanol] Este documento cita antecedentes historicos de como han evolucionando las subestaciones de Luz y Fuerza del Centro hasta hoy en dia. Se realiza una breve descripcion de una subestacion electrica, se mencionan los criterios de diseno de una subestacion, ya que debe cumplir con los requisitos de confiabilidad, continuidad, calidad del servicio, economia, situacion geografica, por mencionar algunos de estos. Se describen los arreglos de las subestaciones mas utilizados por Luz y Fuerza del Centro. De igual manera se describen las subestaciones telecontroladas mencionando los principales elementos de este tipo de subestaciones. Se mencionan las incorporaciones tecnologicas que se han realizado a las subestaciones y las perspectivas que se tienen de estas. Se muestran diagramas unifilares de subestaciones electricas, al igual que se muestran las plantas de las subestaciones

  9. Anisotropy in the simultaneous excitation of two colliding atoms to various substate combinations

    International Nuclear Information System (INIS)

    Moorman, L.

    1987-01-01

    In this thesis double-atom excitation (DAE) processes in atomic collision experiments are studied by measuring the angular correlation of two coincident photons emitted by both excited collision particles. The analytical expression for the angular correlation function is derived which contains as adjustable parameters the various (complex) excitation amplitudes integrated over all scattering angles. The He+He system is investigated, for projectile energies between 0.5 and 3.5 keV, in which both particles are excited simultaneously to the 2 1 P state. The relation between photon correlations and atomic state correlations is investigated and the density matrix elements are calculated for a statistical distribution of the excited atomic substates into which a certain symmetry is incorporated. Collisions between metastable and groundstate He atoms are considered. Single-photon spectra are presented and compared with spectra from the He+He collision system. Coincidence measurements were performed on these collision systems to study possible double-atom excitations. Coincidences between two ultraviolet as well as an ultraviolet and a visible photon were measu0515 Also a measurement is reported of the relative population of the magnetic substates of the 3 1 D state of helium. Coincidence measurements on two ultraviolet photons emitted upon Ne-Ne and He-Ne collisions are described and the double-atom excitations for these systems are studied. For Ne+Ne no coincidence peaks were found. For He+Ne double-atom excitation was observed and from the measured angular correlations the corresponding density matrix elements for some kinetic energies of the projectile. (Auth.)

  10. Major Refit for CERN's 400 kV Substation (Part of the new control and protection system for the 18 kV side)

    CERN Document Server

    2001-01-01

    The 400 kV substation on the Prévessin site brings in the electricity that powers CERN's accelerators and the majority of the Laboratory's installations. It was originally built in the 1970s for the SPS, and is one of only five privately owned 400 kV sub-stations in France. Three of the others belong to the national railway company, SNCF, supplying the Paris-Marseilles TGV line, the other is at the Cadarache research centre near mouth of the Rhone. After nearly thirty years of service, CERN's substation has just undergone a complete overhaul.

  11. Memoria, funciones ejecutivas y deterioro cognitivo en población anciana

    Directory of Open Access Journals (Sweden)

    Yolanda Clemente

    2015-08-01

    Full Text Available Las funciones cognitivas hacen referencia a las funciones intelectivas o funciones mentales superiores. Suelen ser estos procesos los que primero sufren deterioro cognitivo asociado a la edad. El objetivo del presente estudio fue: analizar el estado de la memoria y las funciones ejecutivas en población anciana con y sin deterioro cognitivo; y comparar el estado cognitivo entre ancianos de un centro de personas mayores y ancianos en sus hogares. Se administró un test de screening para comprobar el nivel de deterioro cognitivo (Mini Examen Cognoscitivo MEC-35, para posteriormente, aplicar el Test de Alteración de Memoria (T@M y el Test de las Anillas. Los participantes fueron 24 sujetos, de los cuales 12 pertenecían a un centro de personas mayores y 12 residían en sus hogares. La edad media de los participantes fue de 78 años. El estudio permitió determinar la relación significativa entre el nivel de deterioro cognitivo y el estado de la memoria y las funciones ejecutivas. El sexo fue indiferente en la variable memoria, pero no en funciones ejecutivas. Finalmente, el hecho de que la persona resida en una institución no mostró diferencias significativas frente a aquellos que residen en sus hogares en cuanto al estado de la memoria y las funciones ejecutivas.

  12. GRAMÁTICA FUNCIONAL: DA ORAÇÃO RUMO AO DISCURSO

    Directory of Open Access Journals (Sweden)

    Edson Rosa Francisco de Souza

    2011-01-01

    Full Text Available Este artigo busca apresentar um breve apanhado teórico sobre a Gramática Discursivo-Funcional, começando pelo modelo padrão de Gramática Funcional, desenvolvida por Simon Dik. O objetivo é mostrar a evolução do modelo funcional de Dik para o modelo de Gramática Discursivo Funcional de Hengeveld & Mackenzie (2006, 2008, apresentando-se as definições e as justificativas que embasam a expansão de um modelo funcional focado na oração (Dik, 1989; 1997 para um modelo funcional focado em uma unidade de análise mais ampla (o discurso, na qual as relações entre duas ou mais orações (ou porções de texto maiores são levadas em consideração. Palavras-chave: Funcionalismo; Discurso; Gramática Discursivo-Funcional.

  13. 3D As-Built a documentation of the substation electrical power 400 KV; Documentacion 3D As-Built de una subestacion electrica de 400 KV

    Energy Technology Data Exchange (ETDEWEB)

    Sarti Fernandez, F.

    2011-07-01

    It's getting parameters of time, yields and products obtained, in order to have an objective reference to the possible application of this technique to substations of Red Electrica Espanola (REE).

  14. A comparison of magnetic fields inside and outside high-voltage urban 110-kV power substations with the exposure recommendations of the Ukrainian regulatory authorities

    International Nuclear Information System (INIS)

    Okun, Oleksandr; Shevchenko, Sergey; Korpinen, Leena

    2013-01-01

    The aim of this study was to carry out theoretical investigations of power frequency magnetic fields (MFs), produced inside and outside the domain of urban 110-kV power substations and to establish a correspondence between the levels of the fields and the specified population limits as defined by Ukrainian regulations. The fields produced by high-voltage substations were studied based on the application of the numerical finite element methodology. The investigations have shown that magnetic flux density values calculated inside and outside the considered 110-kV power substations do not reach the exposure limits specified by the Ukrainian regulations (1750 μT) and by international guidelines (ICNIRP 2010). Inside the domain of the substation, the maximum value of MFs was found under the 10-kV bus-bars and it equalled 420 μT. (authors)

  15. A distributed substation automation model based on the multi-agents technology; Um modelo distribuido de automacao de subestacoes baseado em tecnologia multiagentes

    Energy Technology Data Exchange (ETDEWEB)

    Geus, Klaus de; Milsztajn, Flavio; Kolb, Carlos Jose Johann; Dometerco, Jose Henrique; Souza, Alexandre Mendonca de; Braga, Ciro de Carvalho; Parolin, Emerson Luis; Frisch, Arlenio Carneiro; Fortunato Junior, Luiz Kiss; Erzinger Junior, Augusto; Jonack, Marco Antonio; Guiera, Anderson Juliano Azambuja [Companhia Paranaense de Energia (COPEL), Curitiba, PR (Brazil)]. E-mail: klaus@copel.com; flaviomil@copel.com; kolb@copel.com; dometerc@copel.com; alexandre.mendonca@copel.com; ciro@copel.com; parolin@copel.com; arlenio@copel.com; luiz.kiss@copel.com; aerzinger@copel.com; jonack@copel.com; guiera@copel.com

    2006-10-15

    The main purpose of this paper is to analyse distributed computing technology which can be used in substation automation systems. Based on performance comparative results obtained in laboratory, a specific model for distributed substation automation is proposed considering the current model employed at COPEL - Companhia Paranaense de Energia. The proposed model is based on the multi-agents technology, which has lately received special attention in the development of distributed systems with local intelligence. (author)

  16. Envelhecimento ativo e sua relação com a independência funcional

    Directory of Open Access Journals (Sweden)

    Olívia Galvão Lucena Ferreira

    2012-01-01

    Full Text Available El objetivo del presente estudio fue analizar los factores determinantes del envejecimiento activo y su relación con la independencia funcional. La investigación se realizó con 100 personas mayores de una Unidad de Salud de la Familia, en João Pessoa-PB, Brasil. Como instrumentos para la evaluación de personas mayores se utilizó la Medida de Independencia Funcional y un cuestionario sociodemográfico. Los datos fueron analizados a través del software SPSS. Según los resultados, todos los sujetos presentan la independencia funcional para llevar a cabo las actividades analizadas. Los datos también demostraron que la independencia funcional promueve una mayor integración de las personas mayores en la comunidad, mediante el fortalecimiento de los lazos sociales y familiares, de amistad y de ocio, y esos factores se consideran como determinantes del envejecimiento activo.

  17. Funciones ejecutivas: unidad-diversidad y trayectorias del desarrollo

    Directory of Open Access Journals (Sweden)

    Esperanza Bausela Herreras

    2014-06-01

    Full Text Available La presente revisión teórica tiene como objetivo profundizar en el estudio del desarrollo de las funciones ejecutivas, en concreto, en el análisis de las trayectorias del desarrollo de las diversas dimensiones que lo integran (inhibición, memoria de trabajo y flexibilidad, según el modelo propuesto por Miyake y colaboradores. Un segundo objetivo es tratar de conocer si en su evolución sigue la forma de una U invertida -con un ascenso inicial, un crecimiento moderado y un descenso con el transcurso de los años-; finalmente, profundizar en posibles líneas de investigación relacionadas con el las trayectorias y mecanismos que se siguen en su desarrollo. Concluimos considerando la importancia de desarrollar estudios con técnicas de neuroimagen que nos permitan completar y seguir ahondando en el estudio de un proceso cognitivo de orden superior que sigue siendo un gran desconocido en los estudios ontogenéticos.

  18. Estreñimiento funcional en pediatría

    Directory of Open Access Journals (Sweden)

    Luis De la Torre Mondragón

    2014-10-01

    Full Text Available El estreñimiento es un problema común y es una de las principales causas de consulta en la edad pediátrica, sus complicaciones indican un problema en el diagnóstico, en el tratamiento, o en ambos. Este tra- bajo está dirigido a los médicos que atienden niños con estreñimiento funcional e intenta explicar, de una manera práctica, cómo diagnosticar este problema destacando la información imprescindible que se debe obtener de la historia clínica y los estudios auxiliares de diagnóstico que pueden ser de utilidad para descartar organicidad. El “programa de rehabilitación intestinal” es la forma de tratamiento que se propone; éste tiene un éxito mayor a 90%, incluso en pacientes con estreñimiento crónico-grave en el que las recaídas y los fracasos son frecuentes.

  19. Una aplicación de las funciones débilmente contractivas a problemas de valor en la frontera de funciones con valores en intervalos

    Directory of Open Access Journals (Sweden)

    Vladimir Angulo-Castillo

    2014-06-01

    Full Text Available Se estudia la existencia y unicidad de soluciones para problemas de valor en la frontera asociadas a ecuaciones diferenciales de funciones con valores en intervalos, usando la derivada de Hukuhara y algunos teoremas de punto fijo de funciones débilmente contractivas definidas en conjuntos parcialmente ordenados. Abstract. We study the existence and uniqueness of solutions for boundary value problems associated to differential equations of interval-valued functions, by using the derivative of Hukuhara and some fixed point theorems for weakly contractive mappings defined on partially ordered sets.

  20. Design of online monitoring and forecasting system for electrical equipment temperature of prefabricated substation based on WSN

    Science.gov (United States)

    Qi, Weiran; Miao, Hongxia; Miao, Xuejiao; Xiao, Xuanxuan; Yan, Kuo

    2016-10-01

    In order to ensure the safe and stable operation of the prefabricated substations, temperature sensing subsystem, temperature remote monitoring and management subsystem, forecast subsystem are designed in the paper. Wireless temperature sensing subsystem which consists of temperature sensor and MCU sends the electrical equipment temperature to the remote monitoring center by wireless sensor network. Remote monitoring center can realize the remote monitoring and prediction by monitoring and management subsystem and forecast subsystem. Real-time monitoring of power equipment temperature, history inquiry database, user management, password settings, etc., were achieved by monitoring and management subsystem. In temperature forecast subsystem, firstly, the chaos of the temperature data was verified and phase space is reconstructed. Then Support Vector Machine - Particle Swarm Optimization (SVM-PSO) was used to predict the temperature of the power equipment in prefabricated substations. The simulation results found that compared with the traditional methods SVM-PSO has higher prediction accuracy.

  1. Workers' exposure to electric fields during the task 'maintenance of an operating device of circuit breaker from a service platform' at 110-kV substations.

    Science.gov (United States)

    Korpinen, Leena; Pääkkönen, Rauno

    2018-02-26

    The objective of the study was to investigate occupational exposure to electric fields during the task 'maintenance of an operating device of circuit breaker from a service platform' at 110-kV substations. The aim was also to compare the results to Directive 2013/35/EU. At 16 substations, 255 electric field measurements were performed. The highest mean value of the electric fields was 9.6 kV⋅m -1 . At 63% of substations the maximum values were over 10.0 kV⋅m -1 , and at 31% of the substations the 75th percentiles were over 10.0 kV⋅m -1 , which is the low action level (AL) according to Directive 2013/35/EU. All measured values were below the high AL (20.0 kV⋅m -1 ). In the future, it is important to take into account that the measurements were only taken at Finnish 110-kV substations; therefore, it is not possible to generalize these results to other countries and different types of substations.

  2. Experimental evaluation of radiator control based on primary supply temperature for district heating substations

    International Nuclear Information System (INIS)

    Gustafsson, Jonas; Delsing, Jerker; Deventer, Jan van

    2011-01-01

    Highlights: → We compared a new radiator system control approach with traditional control. → This is an experimental verification of previous simulation results. → We examine changes in delta-T and indoor comfort. → The indoor comfort were not affected by the introduction of alt. radiator control. → The alternative control method can contribute to an increased delta-T. -- Abstract: In this paper, we evaluate whether the primary supply temperature in district heating networks can be used to control radiator systems in buildings connected to district heating; with the purpose of increasing the ΔT. The primary supply temperature in district heating systems can mostly be described as a function of outdoor temperature; similarly, the radiator supply temperature in houses, offices and industries can also be described as a function of outdoor temperature. To calibrate the radiator control system to produce an ideally optimal radiator supply temperature that produces a maximized ΔT across the substation, the relationship between the primary supply temperature and outdoor temperature must be known. However, even if the relation is known there is always a deviation between the expected primary supply temperature and the actual temperature of the received distribution media. This deviation makes the radiator control system incapable of controlling the radiator supply temperature to a point that would generate a maximized ΔT. Published simulation results show that it is possible and advantageous to utilize the primary supply temperature for radiator system control. In this paper, the simulation results are experimentally verified through implementation of the control method in a real district heating substation. The primary supply temperature is measured by the heat-meter and is shared with the radiator control system; thus no additional temperature sensors were needed to perform the experiments. However additional meters were installed for surveillance purposes

  3. Holbrook Substation Superconductor Cable System, Long Island, New York Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Maguire, James; McNamara, Joseph

    2010-06-25

    The LIPA Superconductor project broke ground on July 4, 2006, was first energized on April 22, 2008 (Earth Day) and was commissioned on June 25, 2008. Since commissioning, up until early March, 2009, there were numerous refrigeration events that impacted steady state operations. This led to the review of the alarms that were being generated and a rewrite of the program logic in order to decrease the hypersensitivity surrounding these alarms. The high temperature superconductor (HTS) cable was energized on March 5, 2009 and ran uninterrupted until a human error during a refrigeration system switchover knocked the cable out of the grid in early February 2010. The HTS cable was in the grid uninterrupted from March 5, 2009 to February 4, 2010. Although there have been refrigeration events (propagated mainly by voltage sags/surges) during this period, the system was able to automatically switch over from the primary to the backup refrigeration system without issue as required during this period. On February 4, 2010, when switching from the backup over to the primary refrigeration system, two rather than one liquid nitrogen pumps were started inadvertently by a human error (communication) causing an overpressure in the cable cooling line. This in turn activated the pressure relief valve located in the grounding substation. The cable was automatically taken out of the grid without any damage to the components or system as a result of signals sent from the AMSC control cabinet to the LIPA substation. The cable was switched back into the grid again on March 16, 2010 without incident and has been operational since that time. Since switching from the backup to the primary is not an automatic process, a recent improvement was added to the refrigeration operating system to allow remote commands to return the system from backup to primary cooling. This improvement makes the switching procedure quicker since travel to the site to perform this operation is no longer necessary and

  4. Decision 2010-021 : TransAlta Wind Ardenville wind plant and substation : application no. 1604970, proceeding ID 260

    International Nuclear Information System (INIS)

    2010-01-01

    TransAlta Wind, a wholly owned subsidiary of TransAlta Corporation, filed an application in April 2009 to construct and operate the Ardenville wind farm and substation in Alberta. The wind farm consists of 23 wind turbines, each rated at 3 MW, for a total installed capacity of 69 MW. The wind farm would be connected to the Alberta Interconnected Electric System at the substation. TransAlta anticipates that a new 138-kV transmission line will be required and has contacted the transmission facilities for the future applications. The Alberta Utilities Commission issued a notice to all interested parties and landholders within 2 km of the proposed wind farm. Two residents raised concerns regarding the use of fossil fuels and alternative fuels, ecological impacts and aesthetic impacts of wind farms and land values. Upon review of information, the Commission was satisfied that approval of the application was in the public interest and that the wind farm complies with all regulatory requirements, including sound levels. Pursuant to sections 11, 14 and 15 of the Hydro and Electric Energy Act, the Commission approved the application and granted approval to TransAlta Wind to construct and operate the Ardenville wind power plant and substation.

  5. Substation automation. Integration of applications of the SICLE; Automatizacion de subestaciones. Integracion de aplicaciones sobre el SICLE

    Energy Technology Data Exchange (ETDEWEB)

    Gutierrez, Gustavo; Vega, Miguel [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    This paper presents the first applications developed by the Instituto de Investigaciones Electricas (IIE) on the infrastructure of the SICLE (Sistema de Informacion y Control Local de la Estacion) (Station Information and Local Control System), that Comision Federal de Electricidad (CFE) is now acquiring in order to automate its transmission substations. A computer infrastructure was obtained similar to the existing in the substation for the development of program testing at the IIE; the personnel of the same was trained; the applications in conjunction with the CFE specialists were defined; the agreed developments were made and installed at the Temascal II Substation. [Espanol] En el presente articulo se presentan las primeras aplicaciones desarrolladas por el Instituto de Investigaciones Electricas (IIE) sobre la infraestructura del SICLE (Sistema de Informacion y Control Local de Estacion) que esta adquiriendo la Comision Federal de Electricidad (CFE) a fin de automatizar sus subestaciones de transmision. Se obtuvo una infraestructura de computo similar a la existente en la subestacion para el desarrollo de prueba de programas en el IIE; se capacito al personal en la misma; se definieron las aplicaciones conjuntamente con los especialistas de la CFE; se hicieron los desarrollos acordados y se instalaron en la subestacion Temascal II.

  6. Investigation on the Factors Affecting the Temperature in Urban Distribution Substations and an Energy-Saving Cooling Strategy

    Directory of Open Access Journals (Sweden)

    Fan Yang

    2011-02-01

    Full Text Available The different locations of the equipment in urban distribution substations (DSSs and the location of inlet holes and outlet holes usually result in different ventilation effect, which means the power consumed by any ventilating devices present is different. In this paper the temperature field distribution in an urban distribution substation with different locations of the equipment in the substation was calculated first, then factors influencing the temperature field distribution were investigated, and the influence of the different factors was analyzed. When the distance between the apparatus and walls exceeds 3 m, the change of the temperature in the DSS is very small. Therefore considering the floor area of the DSS, 3 m is the best value of the distance between the apparatus. With the change of the environment temperature or the velocity of the ventilation fans, the maximum temperature in the DSS or apparatus will change. Hence an energy saving ventilation strategy is proposed in the paper, and an intelligent cooling control system is developed, which can modify the velocity of the ventilation fans according to the environment temperature, and thus realize energy savings.

  7. Assessment of the risk of failure of high voltage substations due to environmental conditions and pollution on insulators.

    Science.gov (United States)

    Castillo Sierra, Rafael; Oviedo-Trespalacios, Oscar; Candelo, John E; Soto, Jose D

    2015-07-01

    Pollution on electrical insulators is one of the greatest causes of failure of substations subjected to high levels of salinity and environmental pollution. Considering leakage current as the main indicator of pollution on insulators, this paper focuses on establishing the effect of the environmental conditions on the risk of failure due to pollution on insulators and determining the significant change in the magnitude of the pollution on the insulators during dry and humid periods. Hierarchical segmentation analysis was used to establish the effect of environmental conditions on the risk of failure due to pollution on insulators. The Kruskal-Wallis test was utilized to determine the significant changes in the magnitude of the pollution due to climate periods. An important result was the discovery that leakage current was more common on insulators during dry periods than humid ones. There was also a higher risk of failure due to pollution during dry periods. During the humid period, various temperatures and wind directions produced a small change in the risk of failure. As a technical result, operators of electrical substations can now identify the cause of an increase in risk of failure due to pollution in the area. The research provides a contribution towards the behaviour of the leakage current under conditions similar to those of the Colombian Caribbean coast and how they affect the risk of failure of the substation due to pollution.

  8. Substation automation. Integration of applications of the SICLE; Automatizacion de subestaciones. Integracion de aplicaciones sobre el SICLE

    Energy Technology Data Exchange (ETDEWEB)

    Gutierrez, Gustavo; Vega, Miguel [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1998-12-31

    This paper presents the first applications developed by the Instituto de Investigaciones Electricas (IIE) on the infrastructure of the SICLE (Sistema de Informacion y Control Local de la Estacion) (Station Information and Local Control System), that Comision Federal de Electricidad (CFE) is now acquiring in order to automate its transmission substations. A computer infrastructure was obtained similar to the existing in the substation for the development of program testing at the IIE; the personnel of the same was trained; the applications in conjunction with the CFE specialists were defined; the agreed developments were made and installed at the Temascal II Substation. [Espanol] En el presente articulo se presentan las primeras aplicaciones desarrolladas por el Instituto de Investigaciones Electricas (IIE) sobre la infraestructura del SICLE (Sistema de Informacion y Control Local de Estacion) que esta adquiriendo la Comision Federal de Electricidad (CFE) a fin de automatizar sus subestaciones de transmision. Se obtuvo una infraestructura de computo similar a la existente en la subestacion para el desarrollo de prueba de programas en el IIE; se capacito al personal en la misma; se definieron las aplicaciones conjuntamente con los especialistas de la CFE; se hicieron los desarrollos acordados y se instalaron en la subestacion Temascal II.

  9. Avaliação de novas práticas de compostagem em pequena escala com aproveitamento energético

    OpenAIRE

    Lima Junior,Roberto Guião de Souza; Mahler,Claudio Fernando; Dias,Albiane Carvalho; Luz Junior,Willker Figueirêdo da

    2017-01-01

    RESUMO: Foram avaliados neste estudo novos sistemas de compostagem de mínimo impacto ambiental para o tratamento in loco de resíduos orgânicos. Dois tipos de composteiras e quatro formas de manejo foram testados. Focaram-se ainda duas composições de resíduos sólidos orgânicos com relação ao aproveitamento energético por aquecimento de água. Os resíduos mantiveram temperaturas termofílicas por mais de 20 dias, apresentaram produção desprezível de metano e não geraram chorume em condições de ae...

  10. Caracterização e aproveitamento de água cinza para uso não-potável em edificações

    OpenAIRE

    Bazzarella, Bianca Barcellos

    2005-01-01

    Uma das formas de se conservar água nas residências é utilizando fontes alternativas de suprimento. O reúso de águas cinza para fins não-potáveis, tais como lavagem de veículos, rega de jardins e descarga de vasos sanitários, é apenas um exemplo. Este trabalho tem como objetivo pesquisar alternativas para redução do consumo de água potável e da produção de esgotos sanitários em edificações, a partir do aproveitamento do tratamento e reúso de águas cinza em descargas de vasos sanitários. Pa...

  11. Caracterização, tratamento e reúso de águas cinzas e aproveitamento de águas pluviais em edificações.

    OpenAIRE

    Simone May

    2009-01-01

    não potáveis vêm ao encontro das premissas de sustentabilidade e ao conceito de conservação de água. Sistemas de reúso de águas cinzas e sistemas de coleta e aproveitamento de águas pluviais devem seguir quatro critérios: segurança higiênica, estética, proteção ambiental e viabilidade técnica e econômica. As águas cinzas e as águas pluviais devidamente tratadas podem ser utilizadas no consumo não-potável em edificações como em bacias sanitárias, em torneiras de jardins, na irrigação de gramad...

  12. Methodology to establish the profile that defines a meta-specification that applies to distribution substations - Mexico case based on norm IEC-61850; Metodologia para establecer el perfil que define una meta-especificacion que aplica a subestaciones de distribucion -caso Mexico- basada en la norma IEC-61850

    Energy Technology Data Exchange (ETDEWEB)

    Picazo Blanquel, Cuitlahuac; Chairez Campos Carlos; Garcia Hernandez, Joaquin; Godinez Enriquez, Hebert; Poujol Galvan, Francisco C.; Suarez Cerda, Dionisio A. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Villalobos Ramos, Andres; LLamas Gonzalez, Rosa E. [Comision Federal de Electricidad (Mexico); Samitier Otero, Carlos [Global Networking Engineering (Spain)

    2010-07-01

    In this article is presented a case of study of automation of electrical substations of Comision Federal de Electricidad (CFE) of Mexico, in which the Norm IEC-61850 has been taken as reference. The case of study consists of defining a metaspecification for the protection, control, measurement and communication systems required by the substations of electrical distribution. For the development the obtained previous experience in the development of a bequeathed system SA, norm IEC61850 has been taken as reference, as well as the experiences documented in the Instituto de Investigaciones Electricas (IIE), the Comision Federal de Electricidad (CFE) and Global Networking Engineering (GNE), Spain. This way, the obtained result is the metaspecification, which establishes the application of the control, protective equipment and measurement under the interoperability concepts, as well as the automation functions of substations applied in the intelligent networks (REI's). The methodology put into practice includes the design of the system architecture (SAS), the operation philosophy, the topology of the communications network, the data modeling one with logical nodes that include data types and classes of common data (CDC), transference of information, and administration of the archives ICD, SSD, SCD, and CID. [Spanish] En este articulo se presenta un caso de estudio de automatizacion de subestaciones electricas de la Comision Federal de Electricidad (CFE) de Mexico, en el cual se ha tomado como referencia la norma IEC-61850. El caso de estudio consiste en definir una metaespecificacion para los sistemas proteccion, control, medicion y comunicaciones requeridos por las subestaciones de distribucion electrica. Para el desarrollo se ha tomado como referencia la experiencia previa obtenida en el desarrollo de un sistema SA legado, la norma IEC61850, asi como las experiencias documentadas en el Instituto de Investigaciones Electricas (IIE), la Comision Federal de

  13. Workers exposure to electric fields in 400 kV substations and overhead line works

    International Nuclear Information System (INIS)

    Elovaara, J.; Kuisti, H.; Korpinen, L.

    2010-01-01

    The maximum exposing electric field strength magnitude in the highly inhomogeneous 400 kV electric field under work conditions can reach the value of several tens of kV/m. In spite of this the average current density is, in Finland, always lower than 10 mA/m 2 . Furthermore, the total body currents or contact currents are in 400 kV works clearly less than the limit value proposed by the EU's draft for Directive. On the basis of the obtained results it can be concluded that from the limit value point of view it is not necessary to take further actions to reduce the exposure of the workers when they are working in 400 kV substations and on 400 kV overhead lines. However, because the transient peak values of the contact current can be painful and disturb work, it is advisable to develop a safe and reliable method to connect the worker and the work object in the common ground (equipotential bonding). (authors)

  14. Modern Risk Assessment for Nuclear Power Plants High-Voltage Substations

    International Nuclear Information System (INIS)

    Ioan, S.; Hurdubetiu, S.; Marza, F.; Mocanu, M.; Stefan, M.

    2002-01-01

    The paper describes a first Romanian attempt to set up the methodology for risk assessment and control within high-voltage substations, developed for the Nuclear power plant in Cernavoda (Romania). Considering the present risk assessment methods the MENER Project will develop a new methodology, in line with the European Community legislation and with the specific regional needs. In order to correctly shape the necessary resources required by a risk analysis a large size enterprise (a nuclear power plant) is selected and the following five indicators will be estimated: the economic profit, environmental risk, indirect (future) risk, technology improvement and physic and psychological risk. The results are expected to considerably facilitate risk assessment, by: evaluating project acceptability; evaluating equipment compliance to regulatory criteria; estimating excluding clearances; easing the design of emergency programmes; identifying the equipment use restrictions; identifying the risk sources; selecting the maintenance and risk reduction methods; testing the procedures leading to future regulatory norms; suitability of the risk management system modification. The immediate result of employing modern risk assessment methods could be the decrease by one third of the expenses required by environment protection, staff health and labor safety and quality management. (author)

  15. Development of expert system software to improve performance of high-voltage arresters in substations

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Andre Nunes de; Oltremari, Anderson; Zago, Maria Goretti; Silva, Paulo Sergio da; Costa Junior, Pedro da; Ferraz, Kleber [Sao Paulo State Univ. (UNESP), Bauru, SP (Brazil). Lab. of Power Systems and Intelligent Techniques], E-mail: andrejau@feb.unesp.br; Gusmao, Euripedes Silva; Prado, Jose Martins [ELETRONORTE, MT (Brazil)], E-mail: euripedes.gusmao@eln.gov.br

    2007-07-01

    One of the main causes of interruption and power outage on the energy distribution system in Brazil is related to lightning, which is also the main responsible by the reduction of service life and destruction of consumers and Utilities' equipment. As a manner of improving the protection of the energy distribution system, the Utilities have given attention on establishing maintenance techniques, such preventive as predictive, of the high-voltage arresters in substation. Currently, one of the main manners to obtain the installed arresters' characteristics involves the utilization of high cost equipment, such as leakage current meters. In this way, this paper aims to fulfill the needs of obtaining reliable results with the utilization of lower cost equipment, proposing a Expert System Software for diagnosing and aiding to decision through the utilization of intelligent techniques, which makes possible the monitoring of service life and the identification of aged arresters, allowing the establishment of one reliable chronogram for the removal of equipment, such for maintenance as for substitution. (author)

  16. Simulation of the Static VAR Compensator Culiacan Three Substation for the Analysis of Transients

    Directory of Open Access Journals (Sweden)

    Coronel-Mercado Luis Enrique

    2013-06-01

    Full Text Available Since its emergence in the late 60’s the FACTS (Flexible AC Transmission Systems have been and continue to be studied and implemented in all electrical networks around the world, becoming an essential element for stability, control and maximum exploitation of thereof. One of the most used FACTS devices is the Static VAR Compensator or SVC. In this work, the modeling in Simulink of the Static VAR Compensator installed at the substation Culiacán Tres (CUT belonging to CFE is presented. The SVC is the ability of ±100 MVAR and ABB brand. The modeling was performed to visually program in detail the different subsystems in Simulink such as the timing unit, the TSC (thyristor switched capacitor, TCR (thyristor controlled reactors, filters of the 5th and the 7th harmonic, the transformer bank, the control unit, distribution unit and the measurement unit. Data for major components were taken from data sheet and equipment manuals. ASPEN software was used in order to obtain Thevenin equivalent of the EPS to connect to them the SVC model to test the step and three-phase short circuit. The results of these tests were compared with test results of commissioning of the SVC.

  17. Simulation and study of power quality issues in a fixed speed wind farm substation.

    Science.gov (United States)

    Magesh, T; Chellamuthu, C

    2015-01-01

    Power quality issues associated with the fixed speed wind farm substation located at Coimbatore district are investigated as the wind generators are tripping frequently. The investigations are carried out using two power quality analyzers, Fluke 435 and Dranetz PX5.8, with one of them connected at group control breaker of the 110 kV feeder and the other at the selected 0.69 kV generator busbar during the period of maximum power generation. From the analysis of the recorded data it is found that sag, swell, and transients are the major events which are responsible for the tripping of the generators. In the present study, simulation models for wind, turbine, shaft, pitch mechanism, induction generator, and grid are developed using DIgSILENT. Using the turbine characteristics, a two-dimensional lookup table is designed to generate a reference pitch angle necessary to simulate the power curve of the passive stall controlled wind turbine. Various scenarios and their effects on the performance of the wind farm are studied and validated with the recorded data and waveforms. The simulation model will be useful for the designers for planning and development of the wind farm before implementation.

  18. Simulation and Study of Power Quality Issues in a Fixed Speed Wind Farm Substation

    Directory of Open Access Journals (Sweden)

    T. Magesh

    2015-01-01

    Full Text Available Power quality issues associated with the fixed speed wind farm substation located at Coimbatore district are investigated as the wind generators are tripping frequently. The investigations are carried out using two power quality analyzers, Fluke 435 and Dranetz PX5.8, with one of them connected at group control breaker of the 110 kV feeder and the other at the selected 0.69 kV generator busbar during the period of maximum power generation. From the analysis of the recorded data it is found that sag, swell, and transients are the major events which are responsible for the tripping of the generators. In the present study, simulation models for wind, turbine, shaft, pitch mechanism, induction generator, and grid are developed using DIgSILENT. Using the turbine characteristics, a two-dimensional lookup table is designed to generate a reference pitch angle necessary to simulate the power curve of the passive stall controlled wind turbine. Various scenarios and their effects on the performance of the wind farm are studied and validated with the recorded data and waveforms. The simulation model will be useful for the designers for planning and development of the wind farm before implementation.

  19. Measurement of the Magnetic Fields from High-Voltage (230 kV Substations in Tehran and Assessment of Their Effects

    Directory of Open Access Journals (Sweden)

    Mahdieh Sharifi Fard

    2010-06-01

    Full Text Available Introduction: Recent industrial developments in human societies have caused rapid advancements in technologies of production and distribution of electricity, which in turn result in enhancement of power networks and utilization of high voltages. These networks and the high voltages in transfer lines cause the exposure to electric and magnetic fields. In this study, the situation regarding the magnetic fields from high-voltage (230 kV substations in Tehran was investigated. Material and Methods: In this study, 8 high-voltage (230 kV substations were selected (Shous, Shahid Firouzi, Ozgol, Kan, Tehranpars, Azadegan, Ghorkhane and Besat substations. The premises of each substation was divided into some stations and measurements were done in each one. Measurements were done according to the IEEE std 644-1994 Standard in a way that the device, specifically its probe, was kept at a height of 1 meter above the ground surface. Then, we tried to examine the probable effects of exposure to magnetic fields through the Essex questionnaire, with Cronbach coefficient of 94%, completed by the employees of the substations. These questionnaires were completed by substation operators as an exposed group (36 persons and the employees of the office section of the Tehran regional electric company as a witness group (32 persons. Results: The measured density in none of the stations exceeded the standard limits of the International Commission on Non-Ionizing Radiation Protection. With regard to the questionnaire results about mental and neurological, cardiac and respiratory, and gastrointestinal and auditory disorders, we observed significant differences between witness and exposed groups, however, regarding skin allergies, there was no significant difference. Conclusion: Among all control rooms, the highest measured magnetic field was 6.9 mG in the Ozgol Substation Control Room and the lowest was 2 mG in the post of Shahid Firouzi. The control room of Ozgol

  20. Numerical modelling and experimental measurements for a low-temperature district heating substation for instantaneous preparation of DHW with respect to service pipes

    International Nuclear Information System (INIS)

    Brand, Marek; Thorsen, Jan Eric; Svendsen, Svend

    2012-01-01

    Traditional district heating (DH) systems are becoming uneconomic as the number of new and renovated buildings with reduced heating requirements increases. To keep DH competitive in the future, heat losses in DH networks need to be reduced. One option is to reduce the supply temperature of DH as much as possible. This requires a review and improvement of a DH network, in-house substations, and the whole domestic hot water (DHW) supply system, with the focus on user comfort, hygiene, overall cost and energy efficiency. This paper describes some practical approaches to the implementation of low-temperature district heating (LTDH) with an entry-to-substation temperature around 50 °C. To this end we developed a numerical model for an instantaneous LTDH substation that takes into consideration the effect of service pipes. The model has been verified and can be used for the further optimization of the whole concept as well for individual components. The results show that the way that the service pipe is operated has a significant effect on waiting time for DHW, heat loss, and overall cost. Furthermore, the service pipe should be kept warm by using a bypass in order to fulfil the comfort requirements for DHW instantaneously prepared. -- Highlights: ► Describes and justifies concept of low-temperature district heating with supply temperature of 50 °C. ► Focuses on DHW preparation in low-temperature district heating in-house substations, considering comfort and Legionella. ► Verified numerical model reports on dynamic performance of an in-house substation, considering operation of service pipes. ► Bypass is needed for instantaneous type of district heating substations to fulfil comfort requirements of users. ► The model developed can be used for future optimization of low-temperature substations and whole district heating networks.

  1. Dimensionamento de reservatório para aproveitamento de água de chuva: comparação entre métodos da ABNT NBR 15527:2007 e Decreto Municipal 293/2006 de Curitiba, PR

    OpenAIRE

    Bezerra,Stella Maris da Cruz; Christan,Priscila de; Teixeira,Celimar Azambuja; Farahbakhsh,Khosrow

    2010-01-01

    Este trabalho apresenta uma comparação entre os métodos de dimensionamento de reservatório de água de chuva propostos na NBR 15527:007 e no Decreto Municipal 293/2006, de Curitiba, PR. Para esta análise foram selecionadas cinco edificações que possuem sistema de captação e aproveitamento de água de chuva em funcionamento. Os resultados obtidos através dos dois métodos foram discrepantes. A fim de resultarem volumes coerentes com o aproveitamento de água de chuva, as equações do Decreto Munici...

  2. Aborto entre alunas e funcionárias de uma universidade brasileira

    Directory of Open Access Journals (Sweden)

    Hardy Ellen

    1993-01-01

    Full Text Available No Brasil existem poucas informações sobre o aborto provocado e suas características na população. A dificuldade em se obter dados confiáveis deve-se: à sua ilegalidade, e também ao fato de que a maioria dos estudos é realizada em hospitais. Assim, em 1990, foi realizada pesquisa entre alunas da graduação e funcionárias de uma universidade brasileira. Os dados foram obtidos por meio de questionário, auto-respondido, para devolução por correio, anonimamente. Os resultados apresentados referem-se à freqüência do aborto provocado nesta população. Encontrou-se que quatro vezes menos alunas do que funcionárias tinham engravidado alguma vez (15% e 65%; 9% das alunas e 14% das funcionárias tiveram aborto provocado. Entre as mulheres que engravidaram alguma vez, as alunas tiveram mais aborto provocado do que as funcionárias (59% e 20%. Quando controladas por grupo etário as diferenças entre as alunas e funcionárias mantiveram-se. Entretanto, entre as alunas, o aborto provocado foi mais freqüente entre as mais jovens.

  3. PRODUÇÃO DE UMA FARINHA DE ALBEDO DE LARANJA COMO FORMA DE APROVEITAMENTO DE RESÍDUO

    Directory of Open Access Journals (Sweden)

    Sâmira Bublitz

    2013-11-01

    Full Text Available O Brasil é um dos maiores produtores de suco de laranja e exporta cerca de 70% da sua produção. Durante o processamento do suco de laranja são gerados subprodutos, como o bagaço denominado também de albedo. Visando a diversificação tecnológica, este trabalho possui como objetivo a elaboração de uma farinha a partir de um subproduto da indústria de sucos, que possa ser utilizada como enriquecimento nutricional em formulações de produtos de panificação. A farinha foi obtida pela trituração úmida, lavagem, secagem e trituração seca do resíduo desidratado das laranjas. As análises físico-químicas da farinha de albedo de laranja foram realizadas segundo as metodologias preconizadas pelo Instituto Adolfo Lutz (2008. A umidade (11,75% da farinha ficou dentro do máximo permitido pela legislação brasileira; apresentou um baixo teor de gorduras (0,42% e calorias em torno de 18% a menos que a farinha de trigo. A fibra bruta da farinha de albedo da laranja (16,20% é cinco vezes maior, em comparação a uma farinha tradicional de trigo (3,2%, podendo ser considerada um ingrediente funcional. A farinha de albedo de laranja é uma excelente alternativa para enriquecimento de produtos de panificação, agregando não só valor econômico como valor nutricional, com considerável teor de fibras.

  4. Aproveitamento de água de chuva de cobertura em edificações: dimensionamento do reservatório pelos métodos descritos na NBR 15527

    Directory of Open Access Journals (Sweden)

    Jozrael Henriques Rezende

    2017-12-01

    Full Text Available Este estudo avaliou a viabilidade do aproveitamento da água das chuvas no Tanque de Provas, utilizado em ensaios de modelos reduzidos de embarcações da Faculdade de Tecnologia de Jahu - Fatec Jahu, SP. O trabalho considerou os dados pluviométricos locais, a área de cobertura para captação e a demanda de água. Foi estimada a necessidade de água no processo de limpeza por filtragem, lavagem e evaporação do Tanque de Provas. O dimensionamento do reservatório foi calculado conforme as metodologias descritas na NBR 15527, que determina os requisitos para o aproveitamento de coberturas em áreas urbanas para fins não potáveis. O volume do reservatório selecionado como a melhor alternativa após as análises comparativas considerou as restrições locais e o risco de não atendimento, permitiu o máximo aproveitamento da água pluvial e resultou na maior redução possível da demanda de água potável do sistema de abastecimento público.

  5. Simbolismo e poder nas relações empresa-funcionário

    Directory of Open Access Journals (Sweden)

    Fernanda Chiozzini Martins-Suarez

    2016-06-01

    Full Text Available A presente resenha convida o leitor a uma interpretação das relações de poder dentro de uma empresa siderúrgica, relações estas que são encontradas não apenas na dicotomia empresa-funcionário, mas também como resultado da inserção da mulher no mercado de trabalho. Entretanto, neste contexto, o peso da siderurgia se confunde com a leveza do símbolo significante construído pela empresa e representado pelo uniforme a fim de implantar na mente de seus funcionários a alegria e o prazer de trabalhar em uma companhia que tantas benesses trouxe aos seus funcionários e a cidade onde está instalada.

  6. ¿Pueden mejorarse las funciones ejecutivas en adultos jóvenes?

    Directory of Open Access Journals (Sweden)

    María Jesús Maraver

    2017-10-01

    Full Text Available Al igual que un controlador aéreo regula el funcionamiento de un ajetreado aeropuerto, las funciones ejecutivas son el sistema de control de nuestro comportamiento, permitiéndonos planificar y regular nuestras acciones (motoras o cognitivas, realizar múltiples tareas y recordar sólo aquella información que es relevante. Teniendo en cuenta su importancia, han sido muchos los intentos de demostrar si las funciones ejecutivas se pueden entrenar. En nuestro trabajo investigamos el efecto de dos tipos de entrenamiento de las funciones ejecutivas y demostramos que sí es posible mejorarlas. Además, comprobamos que una mayor motivación durante el entrenamiento está asociada a mayores mejoras.

  7. Valoración funcional del adulto mayor relacionado con el abandono familiar.

    Directory of Open Access Journals (Sweden)

    Jenny Fernanda Villarroel Vargas

    2017-03-01

    Full Text Available Introducción: Se estima que entre el 2000 al 2050 la población mundial envejecida ascenderá del 11% al 22 %, con ello el incremento de las diversas enfermedades o trastornos propios de la edad. Objetivo: Establecer la relación entre capacidad funcional del adulto mayor con el abandono familiar en el barrio La Calera Centro, Latacunga, 2015-2016. Métodos: Se realizó un estudio observacional descriptivo de corte trasversal, donde previo consentimiento informado participaron 70 adultos mayores, a quienes se les aplicó escalas para valoración de la capacidad funcional, así como la encuesta para valorar abandono familiar y aspectos sociodemográficos de la población. Para el análisis estadístico se utilizó el test de Chi Cuadrado de Pearson con un nivel de significancia del 0,05. Resultados: Se reportó el abandono en el 75,7% de los adultos mayores y tuvo significancia con respecto a la capacidad funcional y la estructura familiar (p=0,002. Hubo relación  entre capacidad funcional y abandono familiar, así como también predominio de los adultos mayores entre los 65 a 74 años, sexo femenino, sin ninguna actividad laboral y analfabetos. Hubo relación significativa entre capacidad funcional, edades geriátricas y ocupación; y de igual manera entre la estructura familiar y el abandono. La capacidad funcional y la estructura familiar fueron factores asociados al abandono.    Conclusiones: La dependencia del adulto mayor condicionó a diferentes tipos de maltrato, destacando el abandono familiar.

  8. Funciones ejecutivas y Rendimiento Escolar en Educación Primaria

    OpenAIRE

    Caro-Franco, Federico

    2016-01-01

    En el presente Trabajo de Fin de Máster se ha investigado si existe vinculación entre el rendimiento escolar y las funciones ejecutivas en los alumnos que cursan Educación Primaria. Para ello, se evaluaron 32 alumnos de entre 6 y 8 años, 16 de los cuales presentaban un rendimiento académico bajo, y los restantes 16, un rendimiento académico normalizado. Para diagnosticar el grado de rendimiento de las funciones ejecutivas, se evaluó la atención, tanto sostenida como selectiva, la planificació...

  9. Envelhecimento ativo e sua relação com a independência funcional

    OpenAIRE

    Ferreira,Olívia Galvão Lucena; Maciel,Silvana Carneiro; Costa,Sônia Maria Gusmão; Silva,Antonia Oliveira; Moreira,Maria Adelaide Silva Paredes

    2012-01-01

    El objetivo del presente estudio fue analizar los factores determinantes del envejecimiento activo y su relación con la independencia funcional. La investigación se realizó con 100 personas mayores de una Unidad de Salud de la Familia, en João Pessoa-PB, Brasil. Como instrumentos para la evaluación de personas mayores se utilizó la Medida de Independencia Funcional y un cuestionario sociodemográfico. Los datos fueron analizados a través del software SPSS. Según los resultados, todos los sujet...

  10. Envelhecimento ativo e sua relação com a independência funcional

    OpenAIRE

    Ferreira, Olívia Galvão Lucena; Maciel, Silvana Carneiro; Costa, Sônia Maria Gusmão; Silva, Antonia Oliveira; Moreira, Maria Adelaide Silva Paredes

    2012-01-01

    O objetivo da presente pesquisa foi analisar os fatores determinantes de um envelhecimento ativo e sua relação com a independência funcional. A pesquisa foi realizada com 100 idosos de uma Unidade de Saúde da Família, em João Pessoa-PB. Como instrumentos para a avaliação dos idosos foram utilizados a Medida de Independência Funcional e um questionário sociodemográfico. Os dados foram analisados através do software SPSS. De acordo com os resultados, todos os idosos apresentaram independência f...

  11. Efectos de un programa de entrenamiento funcional en la musculatura core en mujeres con fibromialgia

    OpenAIRE

    Pinzón, I.D.

    2015-01-01

    El objetivo de este artículo es evaluar los efectos de un programa de entrenamiento funcional de músculos core dirigido a las mujeres con fibromialgia. Se realizó un ensayo cuasiexperimental de tipo antes y después de una intervención durante 20 semanas, con frecuencia de 3 días/semana y una duración de 60 minutos cada sesión. Los resultados sugieren que el programa de entrenamiento funcional de músculos core es eficaz en el aumento de la fuerza muscular, la modulación del dolor, la optimizac...

  12. ANÁLISE DE VIABILIDADE ECONÔMICA: UM ESTUDO DE APROVEITAMENTO DA ÁGUA DE CHUVA NO INSTITUTO EDUCACIONAL PAULO DE TARSO – CAMPOS, RJ

    Directory of Open Access Journals (Sweden)

    Marcelo Mello

    2014-04-01

    Full Text Available Nos dias atuais é notória a escassez de água em que o mundo vivencia aliado a isso, o desenvolvimento sustentável tem evoluído bastante no sentido de encontrar formas para proteger recursos naturais essenciais a sobrevivência humana; além da demanda pelo uso da água ser crescente, devido ao aumento populacional. Esses fatores remetem ao questionamento de como utilizar alternativas que reduzam o consumo de água potável e seus custos, preservando os recursos hídricos. Contexto que necessita de alternativas para preservação da água, de modo que esse recurso no futuro próximo não se torne escasso. Este trabalho tem por objetivo analisar a viabilidade econômica da implantação de um sistema de aproveitamento de água de chuva para fins não potáveis; no Instituto Educacional Paulo de Tarso, localizado no bairro Parque Aurora, na cidade de Campos dos Goytacazes – RJ. Foi desenvolvido um estudo de caso para auxiliar na tomada de decisão sobre a aplicação do investimento no projeto; por meio de levantamento dos consumos mensais de água, precipitação pluviométrica e determinação da área de coleta de chuva. Foi realizado o levantamento dos custos dos materiais, mão-de-obra, operação e manutenção do sistema. Os fluxos de caixas das duas alternativas foram analisados com um horizonte de planejamento de vinte e cinco anos a uma taxa mínima de atratividade (TMA de 8,5% ao ano; a alternativa de se investir em um sistema de aproveitamento de água pluvial foi viável financeiramente. A análise de viabilidade econômica foi realizada através dos métodos de valor presente líquido (VPL, taxa interna de retorno (TIR, e o estudo do tempo de recuperação do capital investido, através do payback simples (PBS e payback descontado (PBD.

  13. Third Level of International Relations: Characteristics of Sub-State Actors

    Directory of Open Access Journals (Sweden)

    Sergey P. Arteev

    2016-01-01

    Full Text Available The article is in the genre of the review for textbook O. V. Plotnikova and O. Y. Dubrovina International relations of the regions States: characteristics and features (Moscow: Norma; INFRA-M, 2016. 192 p.. Textbook on international activities of sub-state/subnational actors in international relations. Under the sub-state/subnational actors refers to the regions of the States. The authors propose an along with interstate relations (first level and supranational organizations (second level to distinguish a third level of international relations - international relations of the regions in Federal and unitary States. The topic is very relevant due to the ongoing restructuring of the architecture of international relations and world politics. In addition, these processes lead to involvement in international relations new actors. The resulting configuration and the role of traditional players. In addition to long-term evolutionary processes, we should not forget about the position of Russia in the last few years. It is obvious that the current tensions around the Russian Federation may not be fully resolved with the old methods. At the same time, sub-state/ subnational actors as subjects of a combined nature, the role played by regions of the Russian Federation, able to combine harmoniously in its international activities as the techniques characteristic of the traditional actors - States and developments in the tools of non-traditional actors - international non-governmental and non-profit organizations etc. As a result of positive results can be achieved faster and at the interstate level. The review considers the subject and the relevance of the topic, presents the analysis of the content of the work. Marked strengths of the textbook, including those associated with the consideration of the diagonal ties and the political components in the international activities of the regions. In addition to the advantages, attention is paid to the analysis of

  14. Simulator for training operators of electric substation: an approach via RBC-Paraconsistent; Simulador para treinamento de operadores de subestacao eletrica: um enfoque via RBC-paraconsistente

    Energy Technology Data Exchange (ETDEWEB)

    Lambert-Torres, G.; Martins, H.G.; Coutinho, M.P.; Goulart, J.D.C.; Soares, F.M.A. [Universidade Federal de Itajuba (UNIFEI), MG (Brazil). Dept. de Engenharia Eletrica], Emails: germanoltorres@gmail.com, helgagonzaga@gmail.com, maurilio.coutinho@gmail.com, janaina157@yahoo.com.br, francis.azevedo@gmail.com

    2009-07-01

    This article presents a combination of two techniques applied artificial intelligence to solve problems to Restoration of an Electric Substation: Casebased Reasoning - CBR and the Four Values Annotated Paraconsistent Logic - 4vAPL. The process occurs in the connection functions of belief, disbelief, specialty and temporality to LPA4v in the retrieval of cases to determine process diagnostic of an RBC. The field of CBR is applied in a recovery of an electric substation. The LPA4v is the support applied in problems that have inconsistent information, partials and undefined. Thus this study is closer of the real situations.

  15. Occupational exposure to electric and magnetic fields during work tasks at 110 kV substations in the Tampere region.

    Science.gov (United States)

    Korpinen, Leena H; Pääkkönen, Rauno J

    2010-04-01

    The occupational exposure to electric and magnetic fields during various work tasks at seven 110 kV substations in Finland's Tampere region was studied. The aim was to investigate if the action values (10 kV/m for the E-field and 500 microT for the B-field) of the EU Directive 2004/40/EC were exceeded. Electric and magnetic fields were measured during the following work tasks: (1) walking or operating devices on the ground; (2) working from a service platform; (3) working around the power transformer on the ground or using a ladder; and (4) changing a bulb from a man hoist. In work task 2 "working from a service platform" the measured electric field (maximum value 16.6 kV/m) exceeded 10 kV/m in three cases. In the future it is important to study if the limit value (10 mA/m(2)) of Directive 2004/40/EC is exceeded at 110 kV substations. The occupational 500 microT action value of the magnetic flux density field (B-field) was not exceeded in any working situation.

  16. Magnetic substate populations of product nuclei in the /sup 11/B(d,p)/sup 12/B reaction

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, M; Ochi, S; Minamisono, T; Mizobuchi, A; Sugimoto, K [Osaka Univ., Toyonaka (Japan). Lab. of Nuclear Studies

    1976-05-31

    Magnetic substate populations of product nuclei in the /sup 11/B(d,p)/sup 12/B reaction have been measured in an energy range Esub(d) = 1.3-3.0 MeV at recoil angles of thetasub(R) = 55/sup 0/, 45/sup 0/ and 27/sup 0/-37/sup 0/. A static magnetic field (3 kG) was applied normal to the reaction plane to keep the nuclear orientation. Quadrupole effects on the implanted /sup 12/B in Ta were utilized to perturb the Zeeman splitting. NMR transitions were induced, and detected by the asymmetry change in the ..beta..-decay of /sup 12/B. From this information, the magnetic substate populations were determined, for the unique assignment of which the sign of the quadrupole interaction had to be known. For this purpose, a p-..gamma.. angular correlation was measured, which determined the alignment of the first excited state of /sup 12/B. A comparison of the present result with theoretical predictions is given, together with the resultant information about j-mixings in the /sup 12/B states.

  17. A Comparative Study on Substation Types and Network Layouts in Connection with Low-Energy District Heating Systems

    DEFF Research Database (Denmark)

    Tol, Hakan; Svendsen, Svend

    2012-01-01

    The study deals with low-energy district heating (DH) networks operating in low temperatures such as 55 °C in terms of supply and 25 °C in terms of return. The network layout, additional booster pumps, and different substation types such as storage tanks either equipped or not equipped in domesti...... for end-consumers were also studied, heat loss from these networks and the drop in temperature in the heat-carrier-supply medium being compared.......The study deals with low-energy district heating (DH) networks operating in low temperatures such as 55 °C in terms of supply and 25 °C in terms of return. The network layout, additional booster pumps, and different substation types such as storage tanks either equipped or not equipped in domestic...... hot water production site were examined. Effects of booster pumps on pipe dimensions in the latter case were investigated. Temperature drops during the summer months due to low heat demands of consumers were explored. Use of approaches such as looped networks and branched network layouts with bypasses...

  18. Evaluación funcional en ancianos intervenidos de fractura de cadera

    Directory of Open Access Journals (Sweden)

    Silvia Montalbán-Quesada

    2012-10-01

    Full Text Available Estudio observacional prospectivo en pacientes mayores de 65 años intervenidos de fractura de cadera. El objetivo fue conocer la evolución funcional de los pacientes a los tres meses del alta hospitalaria, identificar variables relacionadas con dicha recuperación funcional, describir la mortalidad e institucionalización asociadas al proceso. Se analizaron variables demográficas como edad, sexo, convivencia. Otros aspectos registrados fueron: comorbilidad, deterioro cognitivo, capacidad para caminar, nivel de dependencia según índice de Barthel, institucionalización y mortalidad. Se recogió la información al ingreso y a los 3 meses del alta. El 89,6% de la muestra, fueron mujeres, la edad media fue de 83,56 años. El 40% de los pacientes recuperaron la independencia previa registrándose una mortalidad del 16,7% así como una leve progresión hacia la institucionalización. La capacidad funcional y el deterioro cognitivo del paciente, previos a la fractura condicionan su recuperación funcional y dependencias posteriores.

  19. Aplicaciones de la Función de Smarandache y las Funciones Prima y Coprima

    OpenAIRE

    Ruiz, Sebastián Martín

    2002-01-01

    Un libro para los amantes de los números: La función de Smarandache aplicada a los números perfectos, congruencias. También, las funciones prima y coprima de Smarandache en conexión con expresiones de los números primos.

  20. Uma visão geral da gramática funcional

    Directory of Open Access Journals (Sweden)

    Maria Helena de Moura Neves

    2001-02-01

    Full Text Available

    O trabalho apresenta uma visão geral do que vem sendo chamado funcionalismo em lingüística. Contrapõem-se os modelos formalista e funcionalista e examinam-se, em especial, as propostas de gramática funcional de C. S. Dik e de M. A. K. Halliday.

  1. Externalización De Funciones: Algunas Reflexiones Teóricas

    Directory of Open Access Journals (Sweden)

    Francisco Ganga Contreras

    2008-04-01

    También se aborda el origen del outsourcing, algunas diferencias conceptuales, sus principales ventajas y riesgos, además de incluir una revisión a la situación actual de la externalización de funciones en Chile.

  2. Caracterização do Regime de Ventos no Piauí Para o Aproveitamento de Energia Eólica

    Directory of Open Access Journals (Sweden)

    Marcos Antonio Tavares Lira

    Full Text Available Resumo O presente estudo apresenta uma caracterização do regime de ventos em algumas regiões do estado do Piauí, realizada por meio da análise do perfil da velocidade média horária e mensal dos ventos bem como da freqüência da direção dos mesmos. O objetivo principal do trabalho é identificar possíveis sítios de geração de energia eólica no Piauí a partir do uso de uma ferramenta computacional: o software Windographer®. Utilizando-se a base de dados do ano de 2010 do Instituto Nacional de Meteorologia (INMET foram analisados os municípios de Valença, Floriano, Alvorada do Gurgueia, Oeiras, Caracol, São João do Piauí, Paulistana e Parnaíba. Para cada município são apresentados graficamente o regime de ventos horário e mensal bem como da sua direção predominante no período estudado. Os resultados mostraram que os municípios de Paulistana e Parnaíba se destacaram por apresentarem um potencial eólico satisfatório para o aproveitamento de energia elétrica.

  3. Aproveitamento de água de chuva para usos não potáveis na Universidade Severino Sombra

    Directory of Open Access Journals (Sweden)

    Juliana Francisco Souza

    2016-10-01

    Full Text Available Este trabalho analisa a viabilidade de um sistema de captação e reuso de água de chuva no campus da Universidade Severino Sombra. O índice pluviométrico anual médio foi de 1329,9 mm. O consumo de água potável médio mensal foi de 468,9 m³, correspondendo a um custo médio de R$ 4.478,00. Para o dimensionamento do reservatório foram utilizados três métodos: Azevedo Neto, Rippl e Interação. Foram obtidos volumes de reservatório de 71, 142, 215, 285 e 355 m3 pelo Método Interativo e custos totais de implantação de R$ 63.694,71; R$ 86.997,90; R$ 110.027,79; R$ 131.218,97 e R$ 131.218,97, com tempos de retorno de aproximadamente 7,8; 5,3; 4,5; 4,0 e 3,8 anos levando em consideração os percentuais de aproveitamento de 10, 20, 30, 40 e 50%, respectivamente.

  4. Relação familiar da pessoa idosa com comprometimento da capacidade funcional

    Directory of Open Access Journals (Sweden)

    Luana Araújo dos Reis

    2015-01-01

    Full Text Available Objetivo: comprender la relación familiar de la persona adulta con comprometimiento de la capacidad funcional. Materiales y mé - todos: estudio exploratorio y descriptivo de abordaje cualitativo, fundamentado en el método de la historia oral, realizado con 15 adultos mayores asistidos por una unidad de salud de la familia, residentes con familiares y que presentaban comprometimiento de la capacidad funcional. Se recolectaron los datos en el período de marzo y abril del 2012, por medio de entrevistas en profundidad. Las categorías temáticas fueron: buena relación familiar, cambios en la relación familiar, sintiéndose un estorbo para la familia, sintiéndose abandonado por la familia. Resultado: el estudio ha revelado que las personas mayores con comprometimiento de la capacidad funcional vivencian sentimientos diversos que van desde la alegría porque son respetadas y tienen sus necesidades atendidas, hasta la tristeza y revuelta, por la adaptación negativa de la familia y el abandono de los hijos. Conclusión: la relación familiar de la persona mayor pasa por reajustes luego del comprometimiento de la capacidad funcional, lo que repercute significativamente en la dinámica de las relaciones. Desde esta comprensión, los profesionales de salud, sobre todo de enfermería, deben reconocer los retos a los que la familia afronta, orientarla y capacitarla para la atención a las demandas de cuidado presentadas por la persona mayor con comprometimiento de la capacidad funcional, y favorecer la realización del cuidado sin que esto desgaste las relaciones.

  5. Funciones ejecutivas: nociones del desarrollo desde una perspectiva neuropsicológica

    Directory of Open Access Journals (Sweden)

    Esperanza Bausela Herreras

    2014-06-01

    Full Text Available Desde la perspectiva del desarrollo podemos observar como los niños van siendo cada más capaces de controlar por sí mimos sus propias acciones, respuestas y regular su propia conducta (autorregulación de la conducta o como pasan de una moral heterónoma a una moral autónoma. Esta capacidad de autorregulación de la conducta va ligada al desarrollo de procesos cognitivos de orden superior (memoria de trabajo, planificación, inhibición de respuestas automáticas..., relacionados todas ellos con un mismo constructo, Funciones ejecutivas. El objetivo de este artículo es analizar cómo se ha conceptualizado este constructo, centrándonos en uno de las paradojas que ha dominado la literatura en la última década. Desde esta perspectiva se consideran las Funciones ejecutivas como una unidad y al mismo tiempo integrada por una diversidad de funciones independientes. Esbozaremos, de forma más concreta, las líneas generales del modelo jerárquico propuesto por Miyake y colaboradores. Para estos autores las tres dimensiones que integran las Funciones ejecutivas son: flexibilidad atencional, control inhibitorio y memoria de trabajo. En coherencia con este modelo, analizamos el sustrato neurológico en el que se sustentan. Finalmente, comparamos diferentes teorías del desarrollo de las Funciones ejecutivas con el modelo jerárquico propuesto por Miyake y colaboradores.

  6. Coordination of voltage and reactive power control in the extra high voltage substations based on the example of solutions applied in the national power system

    Directory of Open Access Journals (Sweden)

    Dariusz Kołodziej

    2012-06-01

    Full Text Available This paper presents examples of coordination between automatic voltage and reactive power control systems (ARST covering adjacent and strongly related extra high voltage substations. Included are conclusions resulting from the use of these solutions. The Institute of Power Engineering, Gdańsk Division has developed and deployed ARST systems in the national power system for a dozen or so years.

  7. The exposure risks to the magnetic field at internal MV/LV substations; Os riscos da exposicao ao campo magnetico em subestacoes internas MT/BT

    Energy Technology Data Exchange (ETDEWEB)

    Keikko, Tommi; Valkealahti, Seppo [Tampere University of Technology (TUT), Tampere (Finland); Paeaekkoenen, Rauno [Finnish Institute of Occupational Health, Lappeenranta (Finland); Seesvuori, Reino [Tampere Power Distribution, Tampere (Finland); Kaennaelae, Sami [Radiation and Nuclear Safety Authority (STUK), Helsinki (Finland)

    2010-10-15

    The risk evaluation due to the magnetic field must be part of the protection concept of health during the work. This paper analyses the worker exposure to magnetic fields in abridged distribution substations, whose values must not surpass the established limits. The real measurements include exposures with measurements synchronous to the load currents and harmonic total distortion among others parameters. (author)

  8. Aproveitamento da água de chuva para lavagem de máquinas agrícolas e veículos: Estudo de caso do Colégio Politécnico da Universidade Federal de Santa Maria

    OpenAIRE

    Nogueira, Cicero Urbanetto; Camilo de Moraes Nogueira, Helena Maria; Fantinel, Antonio Luiz; Jahn, Sérgio Luiz; Rodríguez Padrón, Richard Alberto

    2016-01-01

    Os estudos sobre manejo e aproveitamento dos recursos hídricos vêm sendo um dos focos de pesquisa que está procurando diferentes alternativas para o aproveitamento dos recursos naturais com sustentabilidade. O estudo teve como objetivo o planejamento, a execução e a estimação do retorno econômico do aproveitamento da água de chuva, para lavagem de veículos, máquinas e implementos agrícolas. O estudo foi realizado para o setor de Mecanização do Colégio Politécnico da Universidade Federal de Sa...

  9. The study for defining the best technical and economical alternatives for the associated substation to the Tucurui hydraulic power plant - second stage; Estudo para definicao da melhor alternativa tecnico-economica para a subestacao elevadora-secionadora associada a Usina Hidroeletrica Tucurui - segunda etapa

    Energy Technology Data Exchange (ETDEWEB)

    Machado Junior, Camilo; Fukuoka, Nita; Rose, Eber Havila [ELETRONORTE, Brasilia, DF (Brazil)]. E-mail: eber@eln.gov.br; Martinez, Manuel Luis Barreira [Escola Federal de Engenharia de Itajuba, MG (Brazil). Inst. de Energia Eletrica. Dept. de Eletrotecnica; Violin, Airton

    2001-07-01

    This document presents a synthesis of the developed study for defining the switching scheme of the associated substation to the Tucurui hydraulic power plant second stage which is being constructed. In order to reduce the short circuit level in the first stage substation (in operation) to suitable values and, at the same time, to maintain the flexibility in the generator and transmission systems, it has been decided to install some series reactors between the substations in 550 Kv. The used methodology to define the suitable alternative is also discussed and the substation final configuration involving the first and second stages of the substation enlargement is presented through a illustration.

  10. Estudio del impacto del ajedrez sobre las funciones ejecutivas en niños de edad escolar

    OpenAIRE

    Grau Pérez, Gonzalo; Moreira, Karen

    2015-01-01

    Las funciones ejecutivas (FE) engloban procesos cognitivos complejos, orientados al control y monitoreo de comportamientos dirigidos a metas. La estimulación de estas funciones a través de juegos como el ajedrez puede tener incidencia en el desempeño de los niños en ciertas áreas curriculares, ya que las FE juegan un papel relevante en los aprendizajes escolares. Hay evidencia que sugiere que el ajedrez podría ser beneficioso a nivel de estas funciones. Dado que las FE se desarrollan durante ...

  11. Dinámica neuronal del circuito motor: un estudio de resonancia magnética funcional

    OpenAIRE

    Batista García-Ramó, Karla; Rodríguez Rojas, Rafael; Carballo Barreda, Maylén

    2012-01-01

    La modelación de redes neuronales que describan la interacción funcional del circuito cerebral formado por los ganglios basales (GB), el tálamo y la corteza está limitada por las simplificaciones necesarias para reproducir sus propiedades biológicas. Este trabajo tiene como objetivo general modelar el circuito GB-tálamo-corteza para la selección de un programa motor, sobre la base del patrón de conectividad funcional obtenido por imágenes de resonancia magnética nuclear funcional (RMNf). Se i...

  12. Advances in the diagnosis of substations primary equipment by means of high sensitivity techniques; Avances en el diagnostico de equipo primario de subestaciones mediante tecnicas de alta sensibilidad

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Colon H, V. Rodolfo; Nava G, J. Armando; Azcarraga R, Carlos G [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2005-07-01

    In an electrical system, the substations primary equipment is integrated by the power transformers, the instrument transformers, the breakers and the interconnection circuits (energy cables). At the present time, the described primary equipment has been integrated in an arrangement denominated encapsulated substation that presents dimensional and aesthetic advantages in the conventional substations. Nevertheless, the isolation involved in this type of substations means new challenges when carrying out its diagnosis in a planned way or after the appearance of a fault. In this sense, the insulating and electromechanical system of the primary equipment of substations must be evaluated in a programmed way or be constantly monitored. This with the final purpose of detecting incipient problems that could evolve towards a fault or to the diminution of the electrical system reliability. [Spanish] En un sistema electrico, el equipo primario de subestaciones esta integrado por los transformadores de potencia, los transformadores de instrumento, los interruptores y los circuitos de interconexion (cables de energia). En la actualidad, el equipo primario descrito se ha integrado en un arreglo denominado subestacion encapsulada que presenta ventajas dimensionales y esteticas sobre las subestaciones convencionales. Sin embargo, el aislamiento involucrado en este tipo de subestaciones significa nuevos retos al efectuar su diagnostico de manera planeada o despues de presentarse una falla. En este sentido, el sistema aislante y electromecanico del equipo primario de subestaciones debe ser evaluado de manera programada o monitoreado constantemente. Ello con la finalidad de detectar problemas incipientes que pudieran evolucionar hacia una falla o la disminucion de la confiabilidad del sistema electrico.

  13. Methodology for evaluating the grounding system in electrical substations; Metodologia para la evaluacion del sistema de puesta a tierra en subestaciones electricas

    Energy Technology Data Exchange (ETDEWEB)

    Torrelles Rivas, L.F [Universidad Nacional Experimental Politecnica: Antonio Jose de Sucre (UNEXPO), Guayana, Bolivar (Venezuela)]. E-mail: torrellesluis@gmail.com; Alvarez, P. [Petroleos de Venezuela S.A (PDVSA), Maturin, Monagas (Venezuela)]. E-mail: alvarezph@pdvsa.com

    2013-03-15

    The present work proposes a methodology for evaluating grounding systems in electrical substations from medium and high voltage, in order to diagnose the state of the elements of the grounding system and the corresponding electrical variables. The assessment methodology developed includes a visual inspection phase to the elements of the substation. Then, by performing measurements and data analysis, the electrical continuity between the components of the substation and the mesh ground is verified, the soil resistivity and resistance of the mesh. Also included in the methodology the calculation of the step and touch voltage of the substation, based on the criteria of the International IEEE standards. We study the case of the 115 kV Pirital Substation belonging to PDVSA Oriente Transmission Network. [Spanish] En el presente trabajo se plantea una metodologia para la evaluacion de sistemas de puesta a tierra en subestaciones electricas de media y alta tension, con la finalidad de diagnosticar el estado de los elementos que conforman dicho sistema y las variables electricas correspondientes. La metodologia de evaluacion desarrollada incluye una fase de inspeccion visual de los elementos que conforman la subestacion. Luego, mediante la ejecucion de mediciones y analisis de datos, se verifica la continuidad electrica entre los componentes de la subestacion y la malla de puesta a tierra, la resistividad del suelo y resistencia de la malla. Se incluye tambien en la metodologia el calculo de las tensiones de paso y de toque de la subestacion, segun lo fundamentado en los criterios de los estandares Internacionales IEEE. Se estudia el caso de la Subestacion Pirital 115 kV perteneciente a la Red de Transmision de PDVSA Oriente.

  14. Testing and start up of equipment in a substation; Pruebas y puesta en servicio del equipo de una subestacion

    Energy Technology Data Exchange (ETDEWEB)

    Raull-Martin, J. [Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

    2001-09-01

    The purpose of this paper is to present a summarized version of the test series required to determine out the final condition of the isolations, the continuity of the control circuits, as well as protection, measurement, sing-positing, alarms and the total substation performance. [Spanish] El proposito de este articulo es presentar en forma compacta la serie de pruebas que se requieren para determinar el estado final de los aislamientos, la continuidad de los circuitos de control, proteccion, medicion, senalizacion, alarmas, asi como el funcionamiento del conjunto de la subestacion. Se muestra una grafica K-Temperatura y de conexiones para las pruebas con megger. Se muestra un diagrama de conexiones para determinar las marcas de polaridad este tipo bushing e interruptores; asi como para el faseo de una proteccion diferencial. Se da el diagrama de faseo interno y energizado por el lado de 23 kV de una subestacion de 230 kV.

  15. Application of electro geometric model for analysis of overhead power lines and substation in lightning incidence, v. 16(62)

    International Nuclear Information System (INIS)

    Kotevski, Darko

    2008-01-01

    This paper is a resume of the master thesis made within my master studies at the Department for transmission and distribution systems at FEIT-Skopje. New methodology is presented for estimation of the rates of lightning strikes on power lines and substations with Monte Carlo simulation. Modeling is based on well known electro geometric model which states that protection zones of lightning protection devices are dependant with amplitude of the lighting current. Therefore, for a known configuration it is possible with application of simple numerical methods to evaluate efficiency of the protection devices. Data gained from the simulations can be used to design such devices, to correct existing lightning protection systems or to make analysis for improving reliability of power system elements in lightning incidence. (Author)

  16. Application of electro geometric model for analysis of overhead power lines and substation in lightning incidence, v. 16(63)

    International Nuclear Information System (INIS)

    Kotevski, Darko

    2008-01-01

    This paper is a resume of the master thesis made within my master studies at the Department for transmission and distribution systems at FEIT-Skopje. New methodology is presented for estimation of the rates of lightning strikes on power lines and substations with Monte Carlo simulation. Modeling is based on well known electro geometric model which states that protection zones of lightning protection devices are dependant with amplitude of the lighting current. Therefore, for a known configuration it is possible with application of simple numerical methods to evaluate efficiency of the protection devices. Data gained from the simulations can be used to design such devices, to correct existing lightning protection systems or to make analysis for improving reliability of power system elements in lightning incidence. (Author

  17. A New Approach to Detection of Systematic Errors in Secondary Substation Monitoring Equipment Based on Short Term Load Forecasting

    Directory of Open Access Journals (Sweden)

    Javier Moriano

    2016-01-01

    Full Text Available In recent years, Secondary Substations (SSs are being provided with equipment that allows their full management. This is particularly useful not only for monitoring and planning purposes but also for detecting erroneous measurements, which could negatively affect the performance of the SS. On the other hand, load forecasting is extremely important since they help electricity companies to make crucial decisions regarding purchasing and generating electric power, load switching, and infrastructure development. In this regard, Short Term Load Forecasting (STLF allows the electric power load to be predicted over an interval ranging from one hour to one week. However, important issues concerning error detection by employing STLF has not been specifically addressed until now. This paper proposes a novel STLF-based approach to the detection of gain and offset errors introduced by the measurement equipment. The implemented system has been tested against real power load data provided by electricity suppliers. Different gain and offset error levels are successfully detected.

  18. Characterization of the conformational equilibrium between the two major substates of RNase A using NMR chemical shifts.

    Science.gov (United States)

    Camilloni, Carlo; Robustelli, Paul; De Simone, Alfonso; Cavalli, Andrea; Vendruscolo, Michele

    2012-03-07

    Following the recognition that NMR chemical shifts can be used for protein structure determination, rapid advances have recently been made in methods for extending this strategy for proteins and protein complexes of increasing size and complexity. A remaining major challenge is to develop approaches to exploit the information contained in the chemical shifts about conformational fluctuations in native states of proteins. In this work we show that it is possible to determine an ensemble of conformations representing the free energy surface of RNase A using chemical shifts as replica-averaged restraints in molecular dynamics simulations. Analysis of this surface indicates that chemical shifts can be used to characterize the conformational equilibrium between the two major substates of this protein. © 2012 American Chemical Society

  19. Articulação trabalho-familia, bem-estar infantil e o aproveitamento da janela de oportunidades demografica : a protecção social brasileira das crianças entre 0 e 6 anos no inicio do seculo XXI

    OpenAIRE

    Leticia Bartholo de Oliveira e Silva

    2009-01-01

    Resumo: Esta pesquisa examina as políticas públicas brasileiras que facilitam a articulação trabalho-família, enfocando seu papel para o aproveitamento da janela de oportunidades demográfica em curso no País. Centralmente, argumenta-se que a ausência ou a escassa participação do Estado no compartilhamento das atividades familiares de assistência e cuidado com crianças pode gerar prejuízos a tal aproveitamento, seja por comprimir as possibilidades de engajamento produtivo das mulheres, seja po...

  20. Aproveitamento de águas pluviais e o reúso de águas cinzas em edifícios residenciais de Brasília – parte 1: reduções no consumo de água

    OpenAIRE

    Daniel Sant'Ana; Louise Boeger; Lilian Monteiro

    2013-01-01

    Sistemas de aproveitamento de águas pluviais(AAP) e de reúso de águas cinzas (RAC) sãoestratégias de gestão descentralizadas capazesde promover reduções na demanda urbanade água. No entanto, pouco se sabe sobre suaviabilidade para uma implementação estratégicaem edificações. Para avaliar a viabilidadedesses sistemas hidráulicos em edificações residenciais,é fundamental compreender o usodesagregado de água para estimar o potencialde redução no consumo de água e verificar aaplicabilidade, os cu...

  1. Efeito da peletização e adição de enzimas e vitaminas sobre o desempenho e aproveitamento da energia e nutrientes em frangos de corte de 1 a 21 dias de idade

    OpenAIRE

    Leite, José Laureano Barbosa; Rodrigues, Paulo Borges; Fialho, Elias Tadeu; Freitas, Rilke Tadeu Fonseca de; Nagata, Adriano Kaneo; Cantarelli, Vinícius de Souza

    2008-01-01

    Conduziu-se este experimento para avaliar o efeito da peletização e adição de enzimas e vitaminas sobre o desempenho e aproveitamento da energia e nutrientes, em frangos de corte de 1 a 21 dias de idade. Foram utilizados 350 pintos de corte, COBB, machos, com peso inicial médio de 47g ± 2,5g, em um delineamento inteiramente casualizado, com os tratamentos em arranjos fatorial 3 x 2 (três dietas, com e sem enzimas) sendo que as dietas consistiram de uma ração farelada e duas rações peletizadas...

  2. Aproveitamento de água de chuva de cobertura em edificações: dimensionamento do reservatório pelos métodos descritos na NBR 15527

    OpenAIRE

    Jozrael Henriques Rezende; Natália Tecedor

    2017-01-01

    Este estudo avaliou a viabilidade do aproveitamento da água das chuvas no Tanque de Provas, utilizado em ensaios de modelos reduzidos de embarcações da Faculdade de Tecnologia de Jahu - Fatec Jahu, SP. O trabalho considerou os dados pluviométricos locais, a área de cobertura para captação e a demanda de água. Foi estimada a necessidade de água no processo de limpeza por filtragem, lavagem e evaporação do Tanque de Provas. O dimensionamento do reservatório foi calculado conforme as metodologia...

  3. Utilization of Boron (10B derived from fertilizer by sugar cane Aproveitamento do Boro (10B proveniente do fertilizante pela cana-de-açúcar

    Directory of Open Access Journals (Sweden)

    Henrique Coutinho Junqueira Franco

    2009-12-01

    Full Text Available The response to B in agricultural systems of sugar cane is still an unexplored issue; B application has however recently been widely publicized and used with a certain degree of frequency. The use of 10B-labeled fertilizers may further contribute to clarify this practice. With the objective of evaluating sugar cane use of B (10B derived from fertilizer (boric acid, an experiment was conducted under field conditions in the 2005/2006 growing season. The experiment consisted of the installation of microplots (2 x 1.5 m where 4 kg ha-1 B (boric acid with 85.95 % in 10B atoms dissolved in water was applied 90 days after planting (May 2005. The solution was applied to the soil on both sides of the plant row at a distance of 20 cm. After harvest (June 2006 the B content and 10B abundance in % atoms in all parts of the sugar cane plants (stalks, dry leaves, tips and roots were determined. Results showed that the total B accumulated was 471 g ha-1 in the entire plant (35 % in the stalks, 22 % in the dry leaves, 9 % in the tips and 34 % in the roots. The sugar cane plants used on average 14 % of the total accumulated B in the above-ground part (44 g ha-1 and 11 % in the roots (19 g ha-1, totaling 13 % in the entire plant (63 g ha-1. The recovery of 10B-fertilizer by sugar cane plants was low, around 2 % of the total applied amount.No agrossistema da cana-de-açúcar a resposta à aplicação de B é ainda uma questão não esclarecida, porém é um procedimento que vem sendo utilizado com certa frequência. O uso de fertilizantes marcados com 10B pode auxiliar no entendimento dessa prática. Com o objetivo de avaliar o aproveitamento do B (10B proveniente do fertilizante (ácido bórico pela cana-de-açúcar, realizou-se um experimento em campo, na safra de 2005/2006, que consistiu na instalação de microparcelas (2 m de comprimento por 1,5 de largura, que, após 90 dias do plantio (maio de 2005, receberam 4 kg ha-1 de B (ácido bórico com 85,95 % em

  4. Aproveitamento de escória de siderurgia em substratos alternativos para produção de mudas de pimenteira Dedo-de-moça

    Directory of Open Access Journals (Sweden)

    Eduardo France Oza

    Full Text Available RESUMO Estudos relacionados com o aproveitamento de escória de siderurgia tornaram-se imprescindíveis, pela possibilidade de seu uso como componente de substratos na produção de mudas e por esse uso minimizar o risco de contaminação ambiental, decorrente do descarte inadequado. Assim, objetivou-se, com este trabalho, avaliar o efeito de níveis crescentes de escória de siderurgia em substratos, compostos por solo com esterco bovino curtido e areia, nas variáveis de crescimento e na qualidade de mudas de pimenteira dedo-de-moça (Capsicum baccatum L.. Utilizou-se o delineamento em blocos casualizados, tendo como tratamentos cinco concentrações de escória (0%; 2,5%; 5%; 10% e; 20% e quatro repetições. As avaliações ocorreram aos 55 dias após semeadura, consistindo na contagem do número de folhas, na medição da altura de planta e do diâmetro do coleto, na quantificação das massas secas de folhas e raízes da planta e na determinação do Índice de Qualidade de Dickson. Modelos de regressão foram ajustados (P < 0,05 aos tratamentos com níveis crescentes de escória de siderurgia. A adição em torno de 10% de escória ao substrato proporcionou os maiores valores das variáveis de crescimento, em mudas de pimenteira Dedo-de-moça.

  5. Avaliação de novas práticas de compostagem em pequena escala com aproveitamento energético

    Directory of Open Access Journals (Sweden)

    Roberto Guião de Souza Lima Junior

    Full Text Available RESUMO: Foram avaliados neste estudo novos sistemas de compostagem de mínimo impacto ambiental para o tratamento in loco de resíduos orgânicos. Dois tipos de composteiras e quatro formas de manejo foram testados. Focaram-se ainda duas composições de resíduos sólidos orgânicos com relação ao aproveitamento energético por aquecimento de água. Os resíduos mantiveram temperaturas termofílicas por mais de 20 dias, apresentaram produção desprezível de metano e não geraram chorume em condições de aeração passiva. Como aspectos de maior influência, podem ser considerados: a suspensão das composteiras sobre pallets, a composição dos resíduos, as condições de contorno das composteiras e o manejo adotado. No teste de recuperação energética, temperaturas de até 51ºC foram alcançadas após 24 horas de circulação de água no sistema, sugerindo que o processo pode ser uma fonte potencial de economia de energia. O modelo de compostagem proposto é ambientalmente adequado, porque minimiza emissões e geração de lixiviado se comparado a aterros sanitários e plantas de compostagem industrial, sendo indicado para cozinhas industriais, condomínios, shopping centers e outros geradores em pequena e média escalas.

  6. Barreras arquitectónicas, mentales y de comunicación: mujeres con diversidad funcional

    Directory of Open Access Journals (Sweden)

    Carmen Mañas Viejo

    2016-06-01

    Full Text Available El objetivo de este artículo consiste en mostrar, a partir del análisis de las narrativas de mujeres con diversidad funcional, física y sensorial, las barreras arquitectónicas, mentales y de comunicación que condicionan y configuran el devenir de sus vidas, tanto en el ámbito privado como en el público. Analizamos las situaciones vividas por 60 mujeres con diversidad funcional. El método de investigación tiene un carácter mixto, tanto cuantitativo como cualitativo. Sus narrativas son el medio para conocer en profundidad y analizar sus episodios biográficos que, tanto a nivel social como personal, han contribuido a dar forma al estado y a la situación actual de las participantes con un alcance temporal retrospectivo y prospectivo.

  7. Filogenia y desarrollo de funciones ejecutivas/ Phylogeny and executive functions development

    Directory of Open Access Journals (Sweden)

    Diego Alejandro Calle Sandoval

    2017-06-01

    Full Text Available El presente documento reflexiona acerca del valor filogenético que tiene para la especie humana el desarrollo de la corteza prefrontal y las funciones ejecutivas. Dicho análisis parte de la revisión de estudios empíricos sobre la génesis de estas en la infancia y la patología de las mismas durante el desarrollo, así como de las evidencias etológicas y paleoantropológicas del proceso de hominización. Igualmente, se discute en el artículo la forma como estas funciones neuropsicológicas le permiten al homo sapiens compensar su carácter biológico de inmadurez y falta de especialidades anatómicas.

  8. Funciones de sobrevivencia empleadas en el análisis demográfico

    Directory of Open Access Journals (Sweden)

    Alejandro Mina Valdés

    2001-01-01

    Full Text Available El manejo de las funciones de sobrevivencia tipo Gompertz y tipo Makeham son presentadas a partir de su origen, considerando sus antecedentes, así como la determinación de los parámetros de cada una de éstas, empleando para ello el método de los grupos no superpuestos, comunmente utilizado en ciencias actuariales. También se presenta el método iterativo que permite depurar, logrando un mejor ajuste, los resultados obtenidos, lo que permite proyectar los parámetros de las funciones de sobrevivencia, obteniendo tablas abreviadas de mortalidad por grupos quinquenales de edad tanto para los hombres como para las mujeres en México, a nivel nacional, para los años 1995, 2000, 2005 y 2010. Finalmente, se presentan las ganancias en las esperanzas por edad entre los años 1995 y 2010.

  9. Proteína do soro de leite: Aproveitamento e aplicações na produção de embalagem biodegradável

    Directory of Open Access Journals (Sweden)

    R. Ribeiro-Santos

    2015-12-01

    Full Text Available O soro de leite é um resíduo originado da indústria de laticínios, seu descarte é preocupante, considerando o apelo em relação à preservação do meio ambiente. Além disso, as proteínas do soro de leite são desperdiçadas como resíduo podendo, essas, serem utilizadas em diversas aplicações alimentícias devido aos seus e benefícios para a saúde, sendo uma excelente fonte de aminoácidos indispensáveis. O aproveitamento dessas proteínas é sugerido no enriquecimento ou desenvolvimento de novos produtos, inserindo-as na alimentação como uma forma nutritiva e sensorialmente aceita, além de uma alternativa para o gerenciamento do resíduo. Outra forma de aproveitamento dessas proteínas é na elaboração de embalagens de alimentos como os filmes e revestimentos comestíveis. Esses apresentam vantagens como: extensão da validade comercial e melhoria na qualidade nutricional dos alimentos, além disso, atuam na redução às embalagens sintéticas. Desta forma, essa revisão teve como objetivo elucidar as vantagens do aproveitamento do soro lácteo, bem como de suas proteínas, na elaboração ou enriquecimento de alimentos e principalmente na produção de embalagens biodegradáveis. O trabalho foi realizado por meio de uma abordagem qualitativa utilizando consultas a bases de dados nacionais e internacionais. O reaproveitando do soro de leite na elaboração de produtos como: bebidas lácteas, pães, e biscoitos é desejável uma vez os alimentos são nutricionalmente enriquecidos e inclui uma série de benefícios à saúde. E na produção de embalagens as proteínas apresentam vantagens como melhorias de qualidade nutricional e garantia de segurança do alimento, além do fato de poderem ser comestíveis e biodegradáveis.Whey protein: use and application in the production of biodegradable packagingAbstract: The whey is a residue of the dairy industry. The waste of whey is worrying appeal the regarding the preservation of

  10. Cuantificación del deterioro funcional durante seis meses en pacientes renales en estadio terminal

    Directory of Open Access Journals (Sweden)

    Lucía Ortega Pérez de Villar

    2015-12-01

    Full Text Available Introducción: Los pacientes en tratamiento de diálisis presentan una disminución de la función física, sin embargo, no hay estudios que demuestren el ritmo al que se produce este deterioro funcional. El objetivo principal es cuantificar el deterioro funcional de los pacientes en tratamiento de diálisis durante seis meses. Métodos: 43 pacientes en tratamiento de diálisis de dos centros de Valencia (España (edad 61.3 (14.7 años fueron analizados después de 6 meses. Los participantes completaron el Short Physical Performance Battery, equilibrio monopodal, el Timed Up and Go Test, Sit to stand to Sit Test 10 y 60, dinamometría de mano; elevación de talón y 6 minutos marcha. Además se recogieron datos de las historias clínicas y de las analíticas. Resultados: Tres de las pruebas mejoraron significativamente tras el periodo de 6 meses de observación: el Sit To Stand 10, la dinamometría de la mano derecha y la dinamometría de la mano izquierda, pero sin alcanzar un cambio clínico relevante. Por otro lado, otras medidas no obtuvieron un deterioro significativo como fueron el Short Physical Performance Battery, el Sit to Stand 60, la elevación del talón izquierdo y el 6 minutos marcha. Conclusiones: Después de 6 meses, en ninguna de las pruebas de capacidad funcional se observa un deterioro significativo. Se recomienda a los centros de hemodiálisis realizar un seguimiento de capacidad funcional anualmente, ya que con un periodo de 6 meses no se encuentran cambios significativos.

  11. Um ponto de vista funcional sobre a predicação

    Directory of Open Access Journals (Sweden)

    Ataliba Teixeira de Castilho

    2001-02-01

    Full Text Available

    O texto relata o desenvolvimento do Projeto de Gramática do Português Falado, discute a predicação no quadro da gramática funcional e apresenta alguns resultados da análise de advérbios e adjetivos predicativos no português culto falado no Brasil, com base nos materiais do Projeto NURC.

  12. [Towards an universal biolaw? Biolaw in action and funcionalization of human life's value].

    Science.gov (United States)

    Albert, Marta

    2013-01-01

    The paper analyzes the question of the universal biolaw from the point of view of the biojuridical praxis. The main problems concerning life's protection are found in the process of interpretation and re-creation of the norms (not in their literal texts) regulating the right to life and new rights, as personal autonomy. But it is also at this sphere where the possibilities of an universal biolaw founded on the funcionalization of the human life value are to be found.

  13. SF6 gas insulated power substations. Effects of fast transients (VFT) on the equipment and adjacent equipment of the Itaipu Binacional SF6 insulated power substations; Subestaciones aisladas a gas SF6. Efectos de los transitorios rapidos (VFT's) sobre equipos y equipos adyacentes de las SE's SF6 de Itaipu Binacional

    Energy Technology Data Exchange (ETDEWEB)

    Santacruz Martinez, Miguel [Usina Hidroelectrica de Itaipu, Assuncao (Paraguay)]. E-mail: santcruz@itaipu.gov.py

    2001-07-01

    With the operation starting of the S F6 gas substations in high voltage systems occurs a new form of overvoltage presently known as Very Fast Transients. This paper aims the phenomenon characterization, defining the origins and the behaviour of the electric systems, and briefly presents the damages caused by the phenomenon on the equipment and adjacent equipment of S F6 gas insulated substations of the Itaipu Binacional, mainly on the power transformers and oil/S F6 isolators of the step-up transformers. These equipment was modified or are been modified as a consequence of the this overvoltage effects.

  14. Influencia del nivel y de la actividad escolar en las funciones ejecutivas

    Directory of Open Access Journals (Sweden)

    Julio César Flores Lázaro

    2011-01-01

    Full Text Available El efecto de la escolaridad sobre el desempeño neuropsicológico ha sido ampliamente descrito excepto para las pruebas de funciones ejecutivas. En la actualidad más del 70% de la población mundial presenta un nivel educativo medio-bajo, por lo que es indispensable contar con el conocimiento sobre las características de desempeño en pruebas de funciones ejecutivas en este tipo de población; de forma que se pueda conocer y comprender sus características cognitivas. En este trabajo se analizó el efecto del nivel educativo y el tipo de actividad (escolar vs no escolar en una muestra de 83 participantes divididos en tres grupos: jóvenes con 11 años de escolaridad, adolescentes cursando el bachillerato, y jóvenes universitarios; sobre el desempeño en una amplia batería neuropsicológica de funciones ejecutivas. Los resultados muestran que la actividad escolar más que el nivel educativo es la principal variable que produce diferencias con los participantes jóvenes que ya no realizan su principal actividad en un contexto escolarizado.

  15. PARTICULARES QUE EJERCEN FUNCIONES ADMINISTRATIVAS: EL CASO DE LOS TRIBUNALES DE ÉTICA PROFESIONAL

    Directory of Open Access Journals (Sweden)

    David Suárez Tamayo

    2012-05-01

    Full Text Available Los tribunales de ética profesional son una de las tantas manifestaciones de la llamada descentralización por colaboración, mediante la cual, los particulares ejercen funciones administrativas. Dicha participación de los particulares en la gestión pública encuentra su fundamento en los artículos 2, 26, 123 y 210de la Constitución Política de Colombia de 1991. En la investigación realizadase encontró que en Colombia existen 29 tribunales, colegios o consejos de profesionales que tienen como una de sus funciones investigar y sancionar las conductas contra la ética profesional. En el trabajo se intenta abordar la manera como están integrados, los principios y procedimientos que siguen, el tipo de faltas que investigan, las sanciones que imponen, los términos de caducidad y prescripción, la garantía del debido proceso y la existencia o no de la segunda instancia. Finalmente se hace un inventario de los efectos e implicaciones que se siguen del hecho de ser particulares en ejercicio de funciones administrativas

  16. Actividad funcional cerebral en estado de reposo: REDES EN CONEXIÓN

    Science.gov (United States)

    Proal, Erika; Alvarez-Segura, Mar; de la Iglesia-Vayá, Maria; Martí-Bonmatí, Luis; Castellanos, F. Xavier

    2015-01-01

    Resumen El análisis de la conectividad funcional mediante resonancia magnética funcional (RMf) puede llevarse a cabo durante la realización de una tarea, la percepción de un estímulo o en estado de reposo. Estos análisis han demostrado su fiabilidad y reproducibilidad con diferentes enfoques (matemáticos, estadísticos, físicos) para seleccionar los vóxeles activados. El estudio de la señal de baja frecuencia en la actividad cerebral a través del contraste BOLD en estado de reposo ha revelado patrones de actividad cortical sincronizados, permitiendo describir la arquitectura funcional intrínseca del cerebro humano. La comunidad científica internacional dispone de recursos compartidos que contribuirán mediante este análisis de RMf en estado de reposo a la obtención de diagnósticos y tratamientos más precisos y avanzados en el campo de las neurociencias. PMID:21365601

  17. Funciones psíquicas de las marcas corporales. // Psychic functions of body marking.

    Directory of Open Access Journals (Sweden)

    Margarita María Valencia Valencia.

    2010-06-01

    Full Text Available This article shows the results of a research titled Funciones psíquicas de las marcas corporales (Psychic Functions of Body Marking that analyses the tattoo, scarification and piercing boom in teenagers and young people. Its aim is to elucidate the body statute in our days. From the acknowledgment of the changes in status of human body throughout history and in different cultures, we investigate the special psychic functions of those practices and their symbolic implications, by using some psychoanalytical theories about body image and adolescence. // Este artículo presenta los resultados de la investigación Funciones psíquicas de las marcas corporales, que interroga el significado del auge de tatuajes, escarificaciones y piercings en adolescentes y jóvenes, con el fin de esclarecer el estatuto del cuerpo en la contemporaneidad. A partir de un reconocimiento de los cambios de estatus que el cuerpo ha tenido a través de la historia y las culturas, se indaga, con ayuda de las teorizaciones psicoanalíticas sobre lo corporal y la adolescencia, acerca de las funciones psíquicas particulares de dichas prácticas y su alcance simbolizador.

  18. Desarrollo de funciones ejecutivas, de la niñez a la juventud

    Directory of Open Access Journals (Sweden)

    Julio C. Flores-Lázaro

    2014-05-01

    Full Text Available Las funciones ejecutivas se encuentran entre los procesos más complejos del humano; su desarrollo permite la conformación de diversas capacidades de control, y organización de la conducta y la cognición. En este artículo se presenta una extensa revisión de la literatura más relevante a nivel internacional sobre el tema. Se abarca el proceso de desarrollo desde la niñez hasta la juventud, analizando las características de desarrollo de las principales funciones ejecutivas. Se muestra que la hipótesis planteada por Victoria Anderson hace ya una década es correcta: las funciones ejecutivas se desarrollan de forma secuencial y curvilínea: un intenso progreso en la infancia, con una desaceleración a inicios de la adolescencia. También se analiza el efecto de otros factores adicionales a la edad como son el efecto de la escolaridad, los estilos parentales y el contexto cultural.

  19. Efeitos do resfriamento e aquecimento articular no desempenho funcional do ombro

    Directory of Open Access Journals (Sweden)

    Dayane de Oliveira Estevam

    2015-06-01

    Full Text Available INTRODUÇÃO: Um dos recursos mais utilizados na reabilitação de lesões musculoesqueléticas é a termoterapia por subtração de calor (crioterapia, enquanto a termoterapia por adição de calor é considerada o procedimento mais antigo de reabilitação física. Entretanto, há poucas evidências que tenham investigado os efeitos desses recursos sobre o desempenho de membros superiores. OBJETIVO: Comparar o efeito do resfriamento e do aquecimento articular sobre o desempenho funcional do membro superior. MÉTODOS: Trinta e quatro voluntários (22,23 ± 2,17 anos; 22,39 ± 2,53 kg/m2, de ambos os sexos, foram divididos aleatoriamente em um dos três grupos: 1 grupo crioterapia GCR (n=10: submetidos ao resfriamento articular por compressas frias; 2 grupo termoterapia - GTE (n=10: submetidos ao aquecimento articular por ondas curtas e 3 grupo controle - GCO (n=14, não submetidos a qualquer intervenção. Os voluntários foram avaliados, pré e pós-intervenção, quanto ao desempenho funcional de membros superiores por meio dos testes de estabilidade da extremidade superior em cadeia cinética fechada (TEESCCF e das condições de equilíbrio em apoio bimanual sobre o baropodômetro. Ainda, os voluntários foram avaliados quanto ao desempenho funcional virtual por meio do jogo Mario Kart (Nintendo Wii (r . RESULTADOS: Houve melhora significativa nos valores pós-intervenção no TEESCCF para o GCR (p0,05. Entretanto, na condição de olhos fechados, houve piora de desempenho para GTE (p=0,04 e melhora de desempenho para o GCO (p=0,02. Não houve alteração significativa no desempenho funcional virtual para os três grupos (p>0,05. CONCLUSÃO: Embora não tenha favorecido o desempenho funcional em todos os testes reais e virtuais utilizados, o resfriamento articular foi mais efetivo que o aquecimento articular para manter o desempenho muscular do membro superior, especialmente nas condições de equilíbrio sobre membros superiores na condi

  20. Rastreio de tuberculose nos funcionários de um Hospital Distrital

    Directory of Open Access Journals (Sweden)

    Jorge Pedrosa

    1998-03-01

    Full Text Available RESUMO: INTRODUÇÃO – após terem surgido dois casos com baciloscopias positivas em funcionários do Hospital Distrital de Oliveira de Azeméis em 1996, foi feito um rastreio de tuberculose em todos os profissionais desse Hospital.MATERIAL E MÉTODOS – foi afixado um aviso em todos os Serviços solicitando aos funcionários a realização da prova de tuberculina. Esta foi efectuada mediante injecçãao intra-dérmica de 2 unidades PPD (RT 23, por um único profissional de enfermagem. Aderiram à prova de Mantoux 202 dos 241 funcionários.Em todos os funcionários que referiram sintomas respiratórios (tosse e expectoração, foi efectuada telerradiografia de torax e baciloscopias em amostras após coloração pelo metodo de Ziebl-Neelsen e exame cultural em meio de Lowenstein-Jensen (exames realizados em 27 funcionários.RESULTADOS – foram encontrados 11 easos de tuberculose-infecção em indivíduos com menos de 35 anos (tendo 9 feito tratamento com terapêutica trip la durante dois meses e 6 casos de tuberculose pulmonar com baciloscopias positivas e confirmados no exame cultural.CONCLUSÕES – do estudo realízado concluiu-se que a incidência de tuberculose pulmonar nos funcionários do Hospital Distrital de Oliveira de Azeméis em 1996 foi de 2,54%, o que corresponde aproximadamente ao triplo da incidência na população em geral da área em questão.REV PORT PNEUMOL 1998; IV (2: 147- 153 ABSTRACT: BACKGROUND: After two cases of Pulmonary Tuberculosis were found in healthcare workers of a Regional Hospital in Portugal a study was done to determine the incidence of Tuberculosis in health-workers of the Oliveira de Azeméis Hospital in 1996.METHODS: An information-note was affixed in all Services asking all the workers to do the Tuberculin-test. An intradermic injection of 2 U. of PPD (RT 23, by one trained nurse was done in 202 of 241 health

  1. System for the design of electrical distribution substations; Sistema para el diseno de subestaciones electricas de distribucion

    Energy Technology Data Exchange (ETDEWEB)

    Zayas Perez, Benjamin Eddie; Islas Perez, Eduardo; Bahena Rada, Jessica Liliana; Romero Lima, Jesus [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Sierra Rodriguez, Benjamin; Moreno Diaz, Humberto [Comision Federal de Electricidad (Mexico)

    2011-07-01

    The physical design of electric substations involves a variety of activities, such as developing, reviewing and performing modifications to different design proposals, estimating costs and producing documents to be integrated into an executive project. These activities are usually conducted at the Distribution Divisions of the Federal Electric Commission (CFE) through two separate processes: the development of engineering plans with computer-aided design software (CAD) and volumetric calculations for the initial budget using conventional spreadsheets. The documents are manually developed on an individual basis, without the existence of any functions to allow for automatically updating the design modifications of any of the plans. The corresponding initial budget becomes a lengthy and laborious process with the likelihood of inconsistencies among the documents. In order to optimize the design process for the public and electromechanical works of electric substations (ES) in a three-dimensional (3D) graphic environment, the IIE's Management of Process Supervision, in coordination with the CFE Distribution Subdivision, developed the System for the Design of Electric Substation Distribution (SDESD). This system makes use of the advantages of CAD3D technology to develop detail engineering, cost engineering to calculate initial budgets and virtual reality for three-dimensional interactive navigation. It is worth mentioning that this system is currently in the implementation phase at the CFE Distribution Subdivision. This article briefly describes the main stages in the development of the project, as well as the functioning and principal components of the system. [Spanish] El diseno fisico de subestaciones electricas implica una variedad de actividades, tales como elaborar, revisar y efectuar modificaciones de diferentes propuestas de diseno, estimar costos y producir documentos, para integrarlos como parte de un proyecto ejecutivo. Estas actividades usualmente se

  2. Seismic damage in the electrical substations of the Colima state; Dano sismico en las subestaciones electricas del estado de Colima

    Energy Technology Data Exchange (ETDEWEB)

    Mena H, Ulises; Lopez L, Alberto; Guerrero F, Vicente A. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2004-07-01

    On the 21 of January of 2003, at 20:06:36 hrs (Mexico center time) an earthquake occurred at the Pacific coast with a magnitude of 7.6 degrees in the Richter scale, whose epicenter was located near the state of Colima and it was felt in a large extent of the Mexican Republic. The earthquake caused numerous material damages in the structures (houses, churches, offices, etc) and vital lines, mainly in the infrastructure of the electrical sector of the region, leaving without electrical energy a large part of the nearby populations and some colonies of distant zones such as in Mexico City. The cause of the interruption of the electrical energy was due to the collapse of some of the equipment of 400 and 230 KV of the electrical transmission substations, among which are Manzanillo II and Colima II. With the experience acquired in the earthquake of October 9, 1995 in Manzanillo, in which also the facilities and equipment of the electrical substations were affected considerably, and as a part of the infrastructure project on the analysis of seismic risk of vital lines that is being developed at this moment at the Instituto de Investigaciones Electricas (IIE), it was decided to inspect the electrical substations of the zone, where the greater damages in the facilities and equipment were reported, to analyze and to determine the main causes of their failure. [Spanish] El 21 de enero de 2003, a las 20:06:36 hrs (hora del centro de Mexico) ocurrio un sismo en la costa del Pacifico con una magnitud de 7.6 grados en escala Richter, cuyo epicentro se localizo cerca del estado de Colima y se percibio en gran parte de la republica mexicana. El sismo causo cuantiosos danos materiales en las estructuras (viviendas, iglesias, oficinas, etc) y lineas vitales, principalmente en la infraestructura del sector electrico de la region, dejando sin energia electrica a gran parte de las poblaciones cercanas y algunas colonias de zonas lejanas como es la ciudad de Mexico. La causa del corte de

  3. Tucurui`s 500 kV S F{sub 6} gas-insulated substation modeling for fast transients - field tests comparison

    Energy Technology Data Exchange (ETDEWEB)

    Lima Filho, Joao Ferreira de; Pazo Blanco, Flavio A.F.; D` Ajuz, Ary; Nascimento, Lidio F.A. [ELETRONORTE, Brasilia, DF (Brazil)

    1994-12-31

    Many problems in insulation, devices and equipment have been resulted from switching operations in the 500 kV Gas-Insulated Substation (GIS) of Tucurui power plant. Disconnector closing or opening action can subject the GIS components to great stresses from excessive voltages at high frequencies caused by successive reflections of travelling waves at discontinuities (1,2,3). Field tests were carried out in September 18-23, 1991 to verify the actual GIS stresses at Tucurui. From these results simulations on the Alternative Transients Program (ATP) were performed in order to check the substation modeling. This paper presents and discusses the Tucurui GIS modeling for switching fast transients and its field test validation. (author) 8 refs., 6 figs.

  4. Algorithms for the evaluation of the reliability of networks and substations; Algoritmos para evaluar la confiabilidad de redes y subestaciones electricas

    Energy Technology Data Exchange (ETDEWEB)

    Vega Ortiz, Miguel [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2001-07-01

    Two algorithms are presented, one for analyzing the reliability of networks and another one to analyzing the reliability of electrical substations. The algorithms model a network or a substation by means of a graph and determine all the exits, of up to third degree, which isolates the load points. The algorithm that is used for the network analysis, is the one of p-cuts and in the case of the substations it is the one of minimum ways, for later, from these minimum p-cuts and of the minimum ways, obtains the minimum cuts. These minimum cuts are evaluated with the approximate method and give as a result the system reliability and of each one of the components that have been modeled. At the end some examples and results obtained are shown. As case of study, the algorithm is applied to two substations arrangements and to a network of industrial distribution, but it is possible to be applied to transmission and distribution networks. [Spanish] Se presentan dos algoritmos, uno para analizar la confiabilidad de redes y otro para analizar la confiabilidad de subestaciones electricas. Los algoritmos modelan una red o una subestacion por medio de un grafo y determinan todas las salidas, de hasta tercer grado, que aislan los puntos de carga. El algoritmo que se utiliza para el analisis de redes, es el de p-cortes y en el caso de las subestaciones es el de caminos minimos, para despues, a partir de estos p-cortes minimos y de los caminos minimos, obtener los cortes minimos. Estos cortes minimos se evaluan con el metodo aproximado y dan como resultado la confiabilidad del sistema y de cada una de las componentes que se hayan modelado. Al final se muestran algunos ejemplos y resultados obtenidos. Como caso de estudio, el algoritmo se aplica a dos arreglos de subestaciones y a una red de distribucion industrial, pero se puede aplicar a redes de transmision y de distribucion.

  5. Evaluation of sub-soil geo-electric properties in a proposed power sub-station site at Ebubu, Rivers State, Nigeria

    OpenAIRE

    T.K.S. Abam; S.A. Ngah

    2014-01-01

    Electrical resistivity survey was carried out in a site proposed for the construction and installation of a Power sub-station. The project will involve subsurface installation of cables and other objects that easily conduct electricity. Extant laws including EIA also require knowledge of subsurface distribution of resistivity in construction projects that would involve burial of steel pipes and cables. The imperative of this is emphasized by the location of the project in an area of shallow g...

  6. ANÁLISE SENSORIAL E NUTRICIONAL DE TORTA SALGADA ELABORADA ATRAVÉS DO APROVEITAMENTO ALTERNATIVO DE TALOS E CASCAS DE HORTALIÇAS

    Directory of Open Access Journals (Sweden)

    P. D. J. SOUZA

    2008-11-01

    Full Text Available

    O aproveitamento integral de hortaliças além de enriquecer a dieta contribui para minimizar o desperdício de alimentos. Foram elaboradas duas tortas com talos de couve- flor e de brócolis e com cascas de cenoura e de beterraba. Os objetivos deste trabalho foram avaliar a aceitabilidade dessas tortas e o teor nutricional das cascas, talos e tortas prontas. A análise sensorial foi realizada por 41 provadores não-treinados. Para a torta com menor teor de talos e cascas, o atributo textura teve nota 8,3 ± 0,9 sendo a mais aceita. Para a torta com maior teor, o sabor foi o atributo mais aceito com nota 8,0 ± 1,6. No teste sensorial, o atributo sabor foi significativamente (P < 0,05 diferente entre as amostras analisadas. A casca de cenoura apresentou 2,1g de proteínas e 1,0g de fibras por 100g. A casca de beterraba apresentou 1,4g de proteínas e 3,1g de fibra por 100g. O talo de couve flor apresentou 0,9 g de proteínas e 2,8g de fibras por 100g. O talo de brócolis apresentou 1,5g de proteínas e 4,0g de fibras por 100g. A análise dos resultados permitiu verificar que os talos e as cascas podem ser boas fontes de nutrientes e que as tortas preparadas apresentam teores importantes de nutrientes e fibras. Além disso, através da análise sensorial foi possível verificar a boa aceitação das tortas em relação ao sabor, aparência, textura e cor.

  7. A Comparative Study of Electric Load Curve Changes in an Urban Low-Voltage Substation in Spain during the Economic Crisis (2008–2013)

    Science.gov (United States)

    Lara-Santillán, Pedro M.; Mendoza-Villena, Montserrat; Fernández-Jiménez, L. Alfredo; Mañana-Canteli, Mario

    2014-01-01

    This paper presents a comparative study of the electricity consumption (EC) in an urban low-voltage substation before and during the economic crisis (2008–2013). This low-voltage substation supplies electric power to near 400 users. The EC was measured for an 11-year period (2002–2012) with a sampling time of 1 minute. The study described in the paper consists of detecting the changes produced in the load curves of this substation along the time due to changes in the behaviour of consumers. The EC was compared using representative curves per time period (precrisis and crisis). These representative curves were obtained after a computational process, which was based on a search for days with similar curves to the curve of a determined (base) date. This similitude was assessed by the proximity on the calendar, day of the week, daylight time, and outdoor temperature. The last selection parameter was the error between the nearest neighbour curves and the base date curve. The obtained representative curves were linearized to determine changes in their structure (maximum and minimum consumption values, duration of the daily time slot, etc.). The results primarily indicate an increase in the EC in the night slot during the summer months in the crisis period. PMID:24895677

  8. A Comparative Study of Electric Load Curve Changes in an Urban Low-Voltage Substation in Spain during the Economic Crisis (2008–2013

    Directory of Open Access Journals (Sweden)

    Pedro M. Lara-Santillán

    2014-01-01

    Full Text Available This paper presents a comparative study of the electricity consumption (EC in an urban low-voltage substation before and during the economic crisis (2008–2013. This low-voltage substation supplies electric power to near 400 users. The EC was measured for an 11-year period (2002–2012 with a sampling time of 1 minute. The study described in the paper consists of detecting the changes produced in the load curves of this substation along the time due to changes in the behaviour of consumers. The EC was compared using representative curves per time period (precrisis and crisis. These representative curves were obtained after a computational process, which was based on a search for days with similar curves to the curve of a determined (base date. This similitude was assessed by the proximity on the calendar, day of the week, daylight time, and outdoor temperature. The last selection parameter was the error between the nearest neighbour curves and the base date curve. The obtained representative curves were linearized to determine changes in their structure (maximum and minimum consumption values, duration of the daily time slot, etc.. The results primarily indicate an increase in the EC in the night slot during the summer months in the crisis period.

  9. Memoria sobre el papel de Liouville en la historia de las funciones elípticas

    Directory of Open Access Journals (Sweden)

    Leonardo Solanilla Chavarro

    2014-06-01

    Full Text Available Este artículo recoge las principales conclusiones de una investigación sobre las contribuciones de J. Liouville a la teoría contemporánea de las funciones elípticas. Cubre la mayor parte de los resultados de una colaboración entre el grupo SUMMA del Departamento de Ciencias Básicas de la Universidad de Medellín y el grupo Mat del Departamento de Matemáticas y Estadística de la Universidad del Tolima. El proyecto ha sido financiado parcialmente por la Vicerrectoría de Investigaciones de la Universidad de Medellín y la Facultad de Ciencias de la Universidad del Tolima. Comienza con una descripción de la circunstancia histórica de Liouville, luego de la emergencia del concepto moderno de función elíptica en los trabajos de Abel y Jacobi. Después se discuten ciertos pormenores de las Leçons impartidas por el célebre matemático francés en el año de 1847. Ellos cubren el teorema que hemos llamado de Liouville-Borchardt, las proposiciones fundamentales sobre el número de ceros de las funciones meromorfas doblemente periódicas y los resultados sobre la relación entre los ceros y los polos. Al final, se esbozan importantes conclusiones sobre el legado de Liouville a la teoría de las funciones elípticas de hoy.

  10. Funciones de la responsabilidad civil: cambio de paradigmas en el sistema de Derecho Privado argentino

    Directory of Open Access Journals (Sweden)

    Sandra Natalia Umansky

    2016-09-01

    Full Text Available El presente artículo tiene por finalidad comentar la transformación operada en el sistema del Derecho Privado patrimonial argentino; a través de la inclusión de una variedad de funciones de la responsabilidad civil; tradicionalmente pergeñada en el Código de Vélez como compensatoria. Se ha propuesto; asimismo; analizar la evolución de estas funciones desde la incorporación de algunos institutos provenientes de distintos microsistemas del Derecho Civil; como el Derecho Ambiental y el de Consumo; para estudiar el proceso de modificación de la legislación privada argentina desde el Anteproyecto de 2012 hasta su regulación actual el Código Civil y Comercial de la Nación -en adelante CCCN-; en aras de explicitar la configuración actual del sistema de responsabilidad civil vigente. Para ello se ha realizado una investigación de abordaje cualitativo; con técnicas descriptivas y bibliográficas; caracterizada como pura; si se analizan sus objetivos extrínsecos; y longitudinal en cuanto a su temporalización. Como conclusión principal podemos derivar que la responsabilidad en el Derecho privado patrimonial argentino asume una pluralidad de funciones; centralmente preventiva y resarcitoria; y periféricamente precautoria y punitiva; debiendo el intérprete realizar un adecuado diálogo de fuentes para la articulación del sistema a fin de mantener la plena vigencia de esta polifuncionalidad.

  11. Riscos de cont?gio em tuberculose entre funcion?rios em um hospital universit?rio no munic?pio de Niter?i - Rio de Janeiro

    OpenAIRE

    Couto, Ingrid Ramos Reis

    2012-01-01

    Problema: O aparecimento de casos de adoecimentos por tuberculose entre os funcion?rios do HUAP. Objetivos: Analisar os fatores de risco para tuberculose e o perfil epidemiol?gico dos funcion?rios do HUAP/UFF com resultado da prova tubercul?nica ? 10 mm no per?odo de 2007 a junho de 2011; - Investigar os casos de adoecimento por tuberculose em funcion?rios do HUAP/UFF no per?odo de janeiro de 2004 a julho de 2011; - Identificar a poss?vel associa??o entre o perfil epidemiol?gico dos funcion?r...

  12. Funciones de enfermería en la unidad quirúrgica de nefrología

    Directory of Open Access Journals (Sweden)

    Yanela Díaz Oquendo

    Full Text Available Los cuidados que se desarrollan en la unidad quirúrgica de Nefrología requieren de un personal de enfermería con capacidad para responder a las diferentes funciones de acuerdo al nivel profesional alcanzado y a las necesidades que requieren los pacientes con afecciones renales. Objetivos: Definir las funciones de enfermería en la unidad quirúrgica por niveles de formación. Material y métodos: Se realizó una investigación de desarrollo tecnológico en el Instituto de Nefrología y Hospital Hermanos Armejeiras en el período 2010-2012. Se utilizó la metodología DEFUN (delimitación de funciones y como técnicas cualitativas se usaron la revisión documental y la consulta a expertos. El universo se conformó de 24 profesionales entre enfermeros técnicos, licenciados y médicos de la especialidad; 11 profesionales conformaron el comité de expertos con los cuales se realizó un taller para la identificación y propuesta preliminar de las funciones. Se aplicó el método Delphi para la validación y propuesta de las funciones a 13 profesionales que formaron parte del panel de expertos. Resultados: La propuesta de las funciones se realizó sobre la base de las ya descritas para el licenciado y técnico en enfermería contenidas en la Resolución Ministerial 396/07, obteniéndose de 19 funciones propuestas para el licenciado en enfermería se aceptaron 17 y para el técnico en enfermería de 15 propuestas fueron aceptadas 14 funciones. Conclusiones: Quedan definas las funciones de enfermería por niveles de formación lo cual amplia el perfil de desempeño en correspondencia con el desarrollo alcanzado por la especialidad en el país.

  13. Razonamiento covariacional en el estudio de funciones cuadráticas

    OpenAIRE

    Jhony Alexander Villa-Ochoa

    2012-01-01

    En este artículo se usa el marco conceptual de Carlson et al. (2003) para discutir los resultados de un estudio de caso, el cual describe la forma como un estudiante razona covariacionalmente al enfrentarse a situaciones de variación asociadas a funciones cuadráticas. El estudio se ideó para desarrollar una línea convergente de indagación (Yin, 2009), la cual se centró en las descripciones que el estudiante realizaba a medida que abordaba las situaciones diseñadas para el estudio; dichas ...

  14. Valoración funcional del adulto mayor relacionado con el abandono familiar.

    OpenAIRE

    Jenny Fernanda Villarroel Vargas; Vicente Hernán Cárdenas Naranjo; Josefa Margarita Miranda Vázquez

    2017-01-01

    Introducción: Se estima que entre el 2000 al 2050 la población mundial envejecida ascenderá del 11% al 22 %, con ello el incremento de las diversas enfermedades o trastornos propios de la edad. Objetivo: Establecer la relación entre capacidad funcional del adulto mayor con el abandono familiar en el barrio La Calera Centro, Latacunga, 2015-2016. Métodos: Se realizó un estudio observacional descriptivo de corte trasversal, donde previo consentimiento informado participaron 70 adultos m...

  15. Correlação entre a dinamometria e teste funcional em atletas de handebol

    OpenAIRE

    Silva,Fabiano Fernandes da; Penido,Ciro Augusto Fernandes de Oliveira; Pereira Junior,Valter Luis; Souza,Renato Aparecido de; Villaverde,Antonio Balbin

    2014-01-01

    INTRODUÇÃO: São poucas as informações que relacionam testes funcionais com testes mais precisos, como a dinamometria isocinética. OBJETIVO: Correlacionar as variáveis isocinéticas pico de torque (PT), potência média (PM) e trabalho total (TT) de rotadores internos de ombro em atletas de handebol do gênero masculino com o teste funcional de arremesso de medicine ball (AMB). MÉTODOS: Participaram desse estudo 25 atletas amadores de handebol do gênero masculino com idade média 17,72 ± 2...

  16. Modelo Funcional de un Gestor de Herramientas de Mecanizado Functional Model of Cutting Tool Management

    OpenAIRE

    Amparo Meseguer; Francisco González

    2006-01-01

    En este trabajo se propone un modelo funcional para un gestor de herramientas de mecanizado, integrado con la Planificación de Procesos Asistida por Ordenador (CAPP) y la programación de la producción. El modelo propuesto está basado en la capacidad de CAPP para generar alternativas de herramientas en las operaciones de mecanizado. El gestor resuelve las interferencias entre las herramientas, de forma que cada operación dispone de un conjunto de alternativas de herramientas compatibles con la...

  17. Una propuesta para introducir el pensamiento funcional y el concepto de función real

    OpenAIRE

    Carlos Armando Cuevas Vallejo; Miguel Delgado Pineda; Magally Martínez Reyes

    2018-01-01

    El artículo identifica factores importantes en el fracaso de los estudiantes en el primer curso de cálculo diferencial, donde el factor principal fue la carencia del concepto de función. La investigación tuvo como objetivo incorporar al inicio del curso de cálculo un reforzamiento del pensamiento matemático básico, al incluir el pensamiento funcional. Para validar el modelo se aplicaron a una muestra de 45 estudiantes, actividades didácticas que promovieron el pensamiento matemático; resultad...

  18. Trastorno obsesivo compulsivo: aportaciones desde la personalidad y la neuroimagen funcional

    OpenAIRE

    Pena Garijo, Josep Andreu

    2010-01-01

    Introducción: El término obsesivo se ha empleado indistintamente para referirse tanto a síntomas como a rasgos de personalidad. Los modelos dimensionales de Personalidad sugieren la relación entre ésta y las diferentes dimensiones sintomáticas encontradas en el Trastorno Obsesivo Compulsivo (TOC). Por otro lado, los estudios de Neuroimagen funcional demuestran la implicación del circuito córtico-estriado-talámico y de la inhibición de respuesta en la etiopatogenia de este trastorno. Objetivo:...

  19. Neuro-spect: Imaginología funcional en psiqyuiatría

    OpenAIRE

    Ismael Mena, G.

    2013-01-01

    Durante los últimos años la imagenología funcional presentada por Neuro-Spect se ha ido incorporando progresivamente al diagnóstico diferencial de la patología psiquiátrica especialmente trastorno del ánimo, psicosis, esquizofrenia, trastornos cognitivos como enfermedad de Alzheimer´s, el trastorno obsesivo compulsivo, el déficit atencional y sobretodo los efectos cerebrales de neurotóxicos. En este trabajo publicaremos y comentaremos inicialmente los hallazgos en infarto cerebral hiper-agudo...

  20. Psicoterapia Analítica Funcional feminista: possibilidades de um encontro

    OpenAIRE

    fideles, marcela nayara duarte; Vandenberghe, Luc

    2015-01-01

    O presente estudo reflete sobre o encontro dos posicionamentos da Terapia Feminista (TF) e da Psicoterapia Analítica Funcional (Functional Analytic Psychotherapy – FAP) na clínica. Um estudo de literatura foi feito para comparar seus estilos clínicos. Sua compatibilidade destacou-se quanto ao manejo da relação terapêutica, à inclusão de elementos sociais e culturais, à ênfase sobre a aquisição de habilidades para modificar o ambiente, ao fato de o terapeuta e o cliente assumirem seus valores ...

  1. Mínimos cuadrados generalizados para funciones vectoriales en la Geofísica Espacial

    Directory of Open Access Journals (Sweden)

    Jorge Lemagne Pérez

    2012-04-01

    Full Text Available Se expone una aplicación del ajuste de datos mediante mínimos cuadrados generalizados para funciones vectoriales, a la modelación de los parámetros de la Geofísica Espacial f0F2 y Dst, con el objetivo de pronosticar los mismos. Se emplean un modelo con retardo y dos algoritmos que fueron creados, uno para el ajuste y el otro para estimar la matriz de covarianzas, ambos implementados en MATLAB Versión 7.3.

  2. Mínimos cuadrados generalizados para funciones vectoriales en la Geofísica Espacial

    OpenAIRE

    Jorge Lemagne Pérez; Alexander Calzadilla Méndez

    2012-01-01

    Se expone una aplicación del ajuste de datos mediante mínimos cuadrados generalizados para funciones vectoriales, a la modelación de los parámetros de la Geofísica Espacial f0F2 y Dst, con el objetivo de pronosticar los mismos. Se emplean un modelo con retardo y dos algoritmos que fueron creados, uno para el ajuste y el otro para estimar la matriz de covarianzas, ambos implementados en MATLAB Versión 7.3.

  3. Modelo computacional del circuito motor basado en estudios de Resonancia Magnética Nuclear funcional

    OpenAIRE

    Karla Batista García-Ramó; Rafael Rodríguez-Rojas; Maylén Carballo-Barreda

    2012-01-01

    Los ganglios basales constituyen una compleja red de núcleos subcorticales implicados en el control motor,en la integración sensorimotora y en los procesos cognitivos. Su funcionamiento e interacción con el resto de las estructurascerebrales permanecen como una gran polémica. Este trabajo tuvo como objetivo modelar la interacción del circuito formado por los ganglios basales, el tálamo y la corteza para la selección de un programa motor, sobre la base del patrón de conectividad funcional ob...

  4. Batería luria inicial y desarrollo de las funciones psicológicas superiores

    Directory of Open Access Journals (Sweden)

    Yaser Ramírez Benítez

    2014-06-01

    Full Text Available La batería neuropsicológica Luria Inicial es un instrumento válido para evaluar y seguir el desarrollo de las funciones psicológicas superiores en la edad preescolar. El modelo neuropsicológico de Luria ofrece la posibilidad para conocer las funciones superiores del niño. Metodología: La investigación pretende determinar la utilidad clínica del instrumento Luria Inicial en la población cubana preescolar con alteraciones del neurodesarrollo. El objetivo se cumplió con la revisión de los trabajos científicos publicados en la fecha 2006-2013 en bases de datos electrónica (Scielo, EBSCO host, LILACS, Medigraphic. Resultados: El instrumento tiene una efectiva utilidad clínica para conocer el perfil neuropsicológico del niño preescolar con alteraciones del neurodesarrollo. Los resultados en varias poblaciones (TDAH, bajo peso al nacer, desórdenes metabólicos informan que el acto motor con intencionalidad, la inhibición conductual y la organización espacial son habilidades diana a cualquier evento que interrumpan el neurodesarrollo. La adquisición de la función reguladora del habla predice las condiciones preacadémicas del niño en conjunto con el estado real de las funciones superiores. La utilidad clínica del instrumento está en la posibilidad de describir-explicar el estado real de las funciones superiores y su potencial: el niño puede ejecutar e imitar movimientos, dibujar, reconocer los colores y hablar (estado real, pero si no organiza esas ejecuciones a través de la función reguladora del habla (estado potencial estará sujeto a errores y a no aprender por orientaciones del adulto en la etapa escolar. La línea de pensamiento que ofrece Luria para estudiar a los niños es válida y confiable para diagnosticar y rehabilitar las secuelas del sistema nervioso en desarrollo.

  5. General and Simple Decision Method for DG Penetration Level in View of Voltage Regulation at Distribution Substation Transformers

    Directory of Open Access Journals (Sweden)

    Joon-Ho Choi

    2013-09-01

    Full Text Available A distribution system was designed and operated by considering unidirectional power flow from a utility source to end-use loads. The large penetrations of distributed generation (DG into the existing distribution system causes a variety of technical problems, such as frequent tap changing problems of the on-load tap changer (OLTC transformer, local voltage rise, protection coordination, exceeding short-circuit capacity, and harmonic distortion. In view of voltage regulation, the intermittent fluctuation of the DG output power results in frequent tap changing operations of the OLTC transformer. Thus, many utilities limit the penetration level of DG and are eager to find the reasonable penetration limits of DG in the distribution system. To overcome this technical problem, utilities have developed a new voltage regulation method in the distribution system with a large DG penetration level. In this paper, the impact of DG on the OLTC operations controlled by the line drop compensation (LDC method is analyzed. In addition, a generalized determination methodology for the DG penetration limits in a distribution substation transformer is proposed. The proposed DG penetration limits could be adopted for a simplified interconnection process in DG interconnection guidelines.

  6. Practical experience with IEEE 1588 high precision time synchronization in electrical substation based on IEC 61850 process bus

    Energy Technology Data Exchange (ETDEWEB)

    Moore, R.; Goraj, M.J.; McGhee, J. [RuggedCom Inc., Concord, ON (Canada)

    2010-07-01

    This paper discussed a time synchronization and dynamic multicast filtering procedure conducted on an IEC 61850 process bus. The Institute of Electrical and Electronic (IEEE) 1588 time synchronization and dynamic multicast filtering procedure was conducted at a substation equipped with non-conventional instrument transformers (NCIT) and intelligent circuit breakers. The process bus interconnected IEDs within a bay that included a real time sampled value (SV) measurement system. The system was designed to reduce the use of copper wiring and to eliminate high energy signal processes. Digitized sampled measured values were sent from the electronic instrument transformers to protect and control relays. A merging unit was used to enable the transmission of the digitized current and voltage measurements across an ethernet network. Two sampling rates were supplied for power system monitoring and protection applications. The merging units continuously sent sampling values of current and voltages acquired from primary equipment. Precision time protocol systems were discussed, and issues related to time synchronization were reviewed. A network topology was provided. 4 refs., 4 figs.

  7. Reliability of supply of switchgear for auxiliary low voltage in substations extra high voltage to high voltage

    Directory of Open Access Journals (Sweden)

    Perić Dragoslav M.

    2015-01-01

    Full Text Available Switchgear for auxiliary low voltage in substations (SS of extra high voltages (EHV to high voltage (HV - SS EHV/HV kV/kV is of special interest for the functioning of these important SS, as it provides a supply for system of protection and other vital functions of SS. The article addresses several characteristic examples involving MV lines with varying degrees of independence of their supply, and the possible application of direct transformation EHV/LV through special voltage transformers. Auxiliary sources such as inverters and diesel generators, which have limited power and expensive energy, are also used for the supply of switchgear for auxiliary low voltage. Corresponding reliability indices are calculated for all examples including mean expected annual engagement of diesel generators. The applicability of certain solutions of switchgear for auxiliary low voltage SS EHV/HV, taking into account their reliability, feasibility and cost-effectiveness is analyzed too. In particular, the analysis of applications of direct transformation EHV/LV for supply of switchgear for auxiliary low voltage, for both new and existing SS EHV/HV.

  8. Medidas directas e indirectas de las funciones ejecutivas en niños con trastorno de espectro autista

    Directory of Open Access Journals (Sweden)

    María Fernanda Pérez Pichardo

    2018-01-01

    Full Text Available INTRODUCCIÓN: los niños con trastorno del espectro autista (TEA tienen dificultades en las funciones ejecutivas (FE pero se han sugerido discrepancias entre las medidas directas e indirectas.   OBJETIVO: conocer si existen diferencias en las funciones ejecutivas mediante medidas directas e indirectas entre niños con y sin TEA.   MÉTODO: se incluyeron 14 varones entre primero y tercero de primaria, 50% con diagnóstico de TEA y 50% con desarrollo neurotípico, seleccionados por emparejamiento en edad y grado escolar. El promedio de edad de la muestra fue de 7.43 (DE 0.98 años. Se aplicaron las pruebas de Evaluación neuropsicológica de funciones ejecutivas en niños (ENFEN y el Inventario de clasificación comportamental de las funciones ejecutivas (BRIEF.   RESULTADOS: se encontraron diferencias significativas en las medidas de las FE indirectas, pero no en las directas, entre los grupos (p < 0.05. Así mismo, las correlaciones entre las medidas directas e indirectas fueron mayores en el grupo con TEA.   CONCLUSIONES: los niños con TEA son evaluados con más dificultades en las medidas indirectas de las funciones ejecutivas, pero obtienen puntuaciones similares a los niños con desarrollo neurotípico cuando son evaluados en condiciones estructuradas empleando medidas directas.

  9. Study of multilevel inverters with extended functions; Estudio de inversores multinivel con funciones ampliadas

    Energy Technology Data Exchange (ETDEWEB)

    Miranda Vidales, Homero

    2007-06-15

    strategies to implement the modulation and programming technique. [Spanish] Desde 1980 los convertidores multinivel han sido parte fundamental en equipos de electronica de potencia tales como variadores de velocidad para motores de induccion. En las ultimas decadas las aplicaciones de estos convertidores se extendieron a otras funciones tales como vehiculos electricos, sistemas de transmision de energia y equipos acondicionadores de red. En la actualidad los convertidores multinivel han ganado un espacio muy importante en aplicaciones de media y alta tension gracias a sus caracteristicas que presentan. Especialmente en acondicionadores de red los cuales son equipos de electronica de potencia que se basan en convertidores estaticos. Entre las principales aplicaciones de los acondicionadores de red son la compensacion de armonicas en corriente y/o tension, la generacion de potencia reactiva y la compensacion de desviaciones en la magnitud de tension. La contaminacion armonica en la red electrica es uno de los problemas mas severos y cabe mencionar que en la mayoria de los paises industrializados no existe cargo alguno que penalice la generacion y propagacion armonica. Sin embargo, es necesario hacer un estudio y proponer soluciones que ayuden a reducir los efectos ocasionados por la generacion de armonicas en corriente y/o tension. Una solucion a este problema son los filtros activos, que se encuentran dentro de los acondicionadores de red, los cuales ayudan a reducir la cantidad de armonicos que circulan en la red electrica. Sin embargo en sistemas de media y alta tension se complica la utilizacion de estos equipos ya que los dispositivos de potencia que componen a los convertidores convencionales (dos niveles) no soportan altos niveles de tension y corriente simultaneamente. Como una solucion a estos problemas surgen los inversores multinivel. Los inversores multinivel son equipos que operan con bajos niveles de tension en las fuentes de CD y los dispositivos semiconductores

  10. EDUCACIÓN DE PERSONAS CON DIVERSIDAD FUNCIONAL. ALGUNOS APUNTES HISTÓRICOS

    Directory of Open Access Journals (Sweden)

    Daniel Fernández Fernández

    2016-01-01

    Full Text Available El presente artículo forma parte de un proyecto de investigación desarrollado en el Instituto de Investigación en Educación de la Universidad de Costa Rica (INIE/UCR, titulado “Diversidad sexual y diversidad funcional. Análisis de la (reproducción de subalternidades en el sistema educativo costarricense”. El principal objetivo del este trabajo consiste en analizar los emplazamientos que históricamente han ocupado aquellos cuerpos signados como “discapacitados” en el sistema educativo costarricense. Para ello, se tomaron como referencia documentos nacionales que datan desde finales del siglo XIX y principios del XXI (informes institucionales de labores, leyes y reglamentos, noticias, boletines y revistas informativas de educación, mediante un abordaje metodológico que conjuga la perspectiva foucaultiana del discurso con un enfoque histórico transversal. Algunas de las reflexiones desarrolladas aquí muestran que el discurso institucional sobre la diversidad funcional se materializa en una serie de estrategias que apuntan a un ordenamiento de los cuerpos especialmente abocado a convertirlos en elementos útiles y capitalizables (plusvalor para el sistema, mediante ocupaciones laborales específicas.

  11. Funciones de la fotografía en las relaciones interculturales entre familias inmigrantes

    Directory of Open Access Journals (Sweden)

    Antonio BAUTISTA GARCIA-VERA

    2016-01-01

    Full Text Available En este artículo presentamos los resultados y el análisis de uno de los objetivos del proyecto I+D+i aprobado por el Ministerio de Economía y Competitividad de España titulado Mediaciones audiovisuales en las relaciones entre escuela y familias inmigrantes. Concretamente, el dirigido a conocer las funciones que tienen las imágenes fotográficas en las relaciones de un grupo de padres inmigrantes en el colegio al que asisten sus hijos e hijas. Los datos presentados corresponden a las narraciones biográfico-culturales y visuales iniciadas en las aulas por estas familias junto a la tutora del grupo, y continuadas en sus contextos personal y social. Concluimos que las fotografías en los relatos han tenido las funciones de: fuente de información, soporte de análisis, reflexión y debate y, finalmente, medio para comunicar el conocimiento experiencial generado. Dentro de esta última, se han utilizado tres procedimientos que hemos denominado: denotativo autorreferencial, connotativo texto-visual y secuencial.

  12. LA VIDEOCONFERENCIA DE ESCRITORIO COMO APOYO PARA LA EDUCACIÓN DE PERSONAS CON DIVERSIDAD FUNCIONAL

    Directory of Open Access Journals (Sweden)

    Ana Aurora Vidal Martínez

    2015-01-01

    Full Text Available En el presente ensayo se describe el contexto en el que se ha dado el desarrollo educativo de las personas con diversidad funcional para caminar en México y el apoyo que reciben de organismos internacionales y del Gobierno Mexicano, ya que el mismo se ve truncado por diversas causas, siendo una de ellas, la dificultad para asistir a una institución educativa, principalmente por la deficiente infraestructura urbana y de transporte. Este trabajo se fundamenta en investigaciones realizadas por varias instituciones como: El Instituto Nacional de Estadística y Geografía (INEGI, Organización de las Naciones Unidas para la Educación la Ciencia y la Cultura (UNESCO, Observatorio Regional de la Sociedad de la Información, Consejo Nacional para el Desarrollo y la Inclusión de las Personas con Discapacidad (CONADIS, entre otras. Complementa este ensayo los resultados positivos de experiencias utilizando los desarrollos tecnológicos actuales, que hacen posible presentar una propuesta basada en videoconferencia de escritorio, la cual es económica, de fácil y rápida implementación y que puede utilizarse para atender la educación de las perso nas con diversidad funcional para caminar en búsqueda de su integración educativa.

  13. Evidencia y neurociencias cognitivas: El caso de la resonancia magnética funcional

    Directory of Open Access Journals (Sweden)

    A. Nicolás Venturelli

    2015-12-01

    Full Text Available La resonancia magnética funcional es una de las técnicas de neuroimagen más difundidas en las neurociencias cognitivas. Su influencia tuvo un rol importante en la configuración del costado experimental de este campo. Frente a esto, consideramos que su estatus como evidencia no sido suficientemente discutido en la literatura filosófica. Aquí nos centramos sobre este punto desde la óptica de la tensión clásica sobre el alcance de los enfoques localizacionistas en neurociencias. Atendemos al modo en que esta tensión se manifiesta hoy. Tomamos en cuenta un número de limitaciones que presenta la resonancia magnética funcional y analizamos el modo en que los investigadores les hacen frente. En función de esto, sostenemos que existe una medida importante en que la técnica puede ser orientada sobre la base de supuestos y consideraciones teóricas generales. Para sustentar nuestras ideas, tomamos algunos ejemplos recientes de abordajes neurocientíficos caracterizados por abordar de manera directa el carácer dinámico de la actividad a gran escala en el cerebro.

  14. Funciones y estructura de ingeniería social del nuevo gobierno local

    Directory of Open Access Journals (Sweden)

    José Vargas Hernández

    2005-07-01

    Full Text Available Este trabajo tiene como objetivo analizar las funciones y estructura de ingeniería social del nuevo gobierno local para dar respuesta a las demandas sociales, promover el desarrollo y regular los nuevos servicios públicos. A partir de una delimitación de los conceptos de soberanía y autonomía del nuevo gobierno local, se reconfigura una nueva estructura de gobernabilidad de los gobiernos locales que implica una mayor participación ciudadana en los procesos de toma de decisiones y la formulación de las políticas públicas, mediante la facilitación de procesos de descentralización de funciones y mecanismos coordinadores de servicios públicos. Finalmente se analizan las implicaciones en la gobernabilidad de la ingeniería social del nuevo gobierno local.

  15. Significado de las funciones familiares en adolescentes italianos. Nuevas fronteras entre paterno y materno

    Directory of Open Access Journals (Sweden)

    Massimiliano Sommantico

    2008-01-01

    Full Text Available El presente estudio tuvo como objetivo explorar el significado que una muestra de adolescentes y adolescentes tardíos del sur de Italia atribuye a las funciones familiares, para analizar la relación entre la percepción de las transformaciones de las funciones paternas y maternas -en particular la carencia de roles normativos y de contención afectiva- y la agresividad como modalidad preferencial de gestión del conflicto. Se aplicó un diferencial semántico (DF, De Rosa, Parrello, & Sommantico, 2006 y un instrumento de agresividad, adaptado a población europea (AQ, Buss & Perry, 1992, 2003 a 259 sujetos, de edad comprendida entre los 17 y los 35 años, divididos en dos grupos, 139 de bachillerato y 120 de licenciatura. Los resultados del análisis del DF indicaron un perfil monofactorial, a diferencia del trifactorial obtenido por Osgood, Suci y Tannembaum (1957, mientras que en el AQ se encontraron diferencias significativas entre la media de la agresividad general (E=2,73 y factores del instrumento como agresividad verbal (E=3,29, la rabia (E=2,86 y hostilidad (E=2,86. Se concluye que las cualidades de tamaño y seguridad le son atribuidas específicamente a la madre, y que el nivel de agresividad verbal supera el índice de agresividad general.

  16. El “cuplón”; unidad funcional del acoplamiento contráctil.

    Directory of Open Access Journals (Sweden)

    Eduardo Rios

    2014-07-01

    Full Text Available Este artículo examina la evolución del concepto de cuplón, unidad funcional del acoplamiento contráctil, originado hace más de quince años con los colegas Gonzalo Pizarro y Michael Stern. Este examen nos permitirá poner al día avances en el estudio del acoplamiento entre la excitación de origen nervioso y la contracción muscular. Como se verá, la investigación en el tema ha tenido recientemente un claro viraje hacia la búsqueda de formas de aplicación de los conceptos básicos en la prevención y el tratamiento de varias enfermedades. A su vez, el estudio de mutaciones hereditarias en las proteínas del cuplón permitió nuevos avances en la comprensión de las interrogantes más básicas (cuáles son sus funciones y sus interacciones supramoleculares en una feliz y bastante inesperada potenciación mutua entre enfoques muy diferentes de la realidad. Este artículo sigue un desarrollo iterativo, describiendo primero los aspectos básicos del tema, pasando luego a los estudios aplicados, y a través de ellos volviendo a cuestiones fundamentales, ahora en pleno proceso de esclarecimiento.

  17. Water Pumping Stations, File name = UTILITIES - PARTIAL Data is incomplete. Contains electric trans lines, electric substations, sewer plants, sewer pumpstations, water plants, water tanks http://www.harfordcountymd.gov/gis/Index.cfm, Published in 2011, 1:1200 (1in=100ft) scale, Harford County Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Water Pumping Stations dataset current as of 2011. File name = UTILITIES - PARTIAL Data is incomplete. Contains electric trans lines, electric substations, sewer...

  18. Sewerage Pumping Stations, File name = UTILITIES - PARTIAL Data is incomplete. Contains electric trans lines, electric substations, sewer plants, sewer pumpstations, water plants, water tanks http://www.harfordcountymd.gov/gis/Index.cfm, Published in 2011, 1:600 (1in=50ft) scale, Harford County Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Sewerage Pumping Stations dataset current as of 2011. File name = UTILITIES - PARTIAL Data is incomplete. Contains electric trans lines, electric substations, sewer...

  19. Viabilidade técnica de implantação de sistema de aproveitamento de água pluvial para fins não potáveis em universidade

    OpenAIRE

    Salla, Marcio Ricardo; Lopes, Gabriela Bernardi; Pereira, Carlos Eugênio; Moura Neto, João da Costa; Pinheiro, Aline Martins

    2013-01-01

    Este artigo tem como objetivo analisar a viabilidade técnica de implantação de sistema de aproveitamento de águas pluviais para fins não potáveis em uma edificação com salas de aula e anfiteatros na Universidade Federal de Uberlândia, no município de Uberlândia. Dois tipos de análise foram realizadas: sob o ponto de vista quantitativo, verificando se a quantidade de água pluvial coletada supre satisfatoriamente a demanda por água não potável; e sob o ponto de vista qualitativo, verificando se...

  20. Aproveitamento de biogás e lodo excedente de reatores UASB como fonte de energia renovável em estações de tratamento de esgoto

    OpenAIRE

    André Pereira Rosa

    2013-01-01

    A pesquisa teve como objetivo avaliar o aproveitamento dos subprodutos biogás e lodo excedente de reatores UASB como fonte de energia renovável em estações de tratamento de esgoto. O objetivo 1 foi desenvolvido a partir de uma ampla revisão de literatura e visitas a ETEs que promovem a recuperação energética na Europa. No âmbito do objetivo 2, os trabalhos foram desenvolvidos na ETE Laboreaux, Itabira-MG através da caracterização do potencial energético do lodo e do biogás e a proposta de det...

  1. Estimativa do lançamento de água pluvial no sistema de coleta e transporte de esgoto sanitário por meio de práticas de aproveitamento em residências unifamiliares

    OpenAIRE

    Moruzzi,Rodrigo Braga

    2016-01-01

    Resumo A água pluvial de sistemas de aproveitamento (SAAP) utilizada em unidades habitacionais e comerciais provém de sistema independente da rede pública de abastecimento de água potável e não é medida diretamente por meio de hidrômetros. Assim, o volume de esgoto gerado por essa fonte de suprimento alternativa não é contabilizado. O presente artigo aborda metodologia visando estimar o volume de água pluvial lançado na rede pública de esgoto sanitário por meio da indexação ao volume de água ...

  2. LA INFLUENCIA DE LA CONFIANZA Y EL COMPROMISO SOBRE LAS FUNCIONES CREADORAS DE VALOR EN LAS RELACIONES COMERCIALES ENTRE EMPRESAS /

    OpenAIRE

    López Sánchez, J.A.; Santos Vijande, M.L; Trespalacios Gutiérrez, J.A.

    2008-01-01

    El propósito de este trabajo es estudiar el efecto de la confianza y el compromiso sobre la creación de valor para el cliente. Para ello primero se examinan las distintas funciones creadoras de valor en las relaciones comerciales entre empresas. A continuación se plantea el modelo teórico que conecta la confianza y el compromiso con las funciones creadoras de valor. Después se procede con el análisis de los datos obtenidos en el trabajo de campo. En este punto se estudian las conexiones causa...

  3. Caracterização do óleo das sementes de Pachira aquatica Aublet para aproveitamento alimentar Characterization of seed oil Pachira aquatica Aublet for food utilization

    Directory of Open Access Journals (Sweden)

    Neuza Jorge

    2012-03-01

    Full Text Available Os frutos de Pachira aquatica Aublet apresentam sementes comestíveis com características organolépticas muito apreciadas pelas populações amazônicas, sendo pouco utilizados em outras regiões. Este trabalho teve como objetivo caracterizar as sementes quanto à composição centesimal e determinar as características físico-químicas e perfil de ácidos graxos. A determinação da composição centesimal das sementes (teores de umidade, lipídios, proteínas, cinzas e carboidratos e análises do óleo extraído das mesmas (ácidos graxos livres, índices de peróxido, iodo, refração, saponificação, ponto de fusão e perfil de ácidos graxos foram realizadas seguindo metodologia oficial. O teor de óleo nas sementes 38,39% demonstrou que estas têm potencial para aproveitamento industrial. Das características físico-químicas analisadas, o óleo extraído das sementes apresentou 39,2% de ácidos graxos livres (expresso em % ácido oleico, índice de iodo de 27,4 g I2.100 g-1, índice de saponificação de 208,0 mg.KOH g-1, índice de refração (40 °C de 1,4569 e ponto de fusão de 41,9 °C. Quanto à composição de ácidos graxos do óleo predominaram os ácidos palmítico (44,93%, oleico (39,27% e linoleico (11,35%. Tal fato favorece o uso deste óleo como matéria-prima para as indústrias alimentícia, farmacêutica e de cosméticos.The fruits of Pachira aquatica Aublet present edible seeds with organoleptic characteristics much appreciated by peoples in the Amazon, with little being used in other regions. This study aimed to characterize the seeds and to determine the composition and physicochemical characteristics and fatty acid profile. Determining the composition of the seeds (moisture, lipids, proteins, carbohydrates and ash and analysis of oil extracted from them (free fatty acids, peroxide, iodine, refractive index, saponification value, melting point and fatty acid profile was performed following the official methodology

  4. Dimensionamento de reservatório para aproveitamento de água de chuva: comparação entre métodos da ABNT NBR 15527:2007 e Decreto Municipal 293/2006 de Curitiba, PR

    Directory of Open Access Journals (Sweden)

    Stella Maris da Cruz Bezerra

    Full Text Available Este trabalho apresenta uma comparação entre os métodos de dimensionamento de reservatório de água de chuva propostos na NBR 15527:007 e no Decreto Municipal 293/2006, de Curitiba, PR. Para esta análise foram selecionadas cinco edificações que possuem sistema de captação e aproveitamento de água de chuva em funcionamento. Os resultados obtidos através dos dois métodos foram discrepantes. A fim de resultarem volumes coerentes com o aproveitamento de água de chuva, as equações do Decreto Municipal 293/2006 merecem uma revisão, para serem incluídas as considerações sobre índice pluviométrico, área de captação e demanda para a água de chuva armazenada. A utilização dos métodos apresentados na NBR 15527:2007 seria facilitada com ajustes de nomenclatura e inclusão de mais informações na apresentação das equações, em função da ambiguidade de denominação das variáveis. A decisão final sobre qual método mais indicado pode ser baseada na comparação dos volumes obtidos e na viabilidade em termos de área disponível e custo de construção do reservatório.

  5. Advanced approach for determination of earthing characteristics of high voltage substations in terms of their optimal protection from lightning strike

    International Nuclear Information System (INIS)

    Talevski, Vladimir

    2012-01-01

    At the beginning of this PhD thesis, retrospective history is given concerning the evolution of the methods for lightning protection. The conventional methods are presented concerning lighting protection, with a comparation with the newest achievement on this field. The process of thundercloud formation is presented. The foundation of the conventional method for lightning protection is given, using data from standard IEC 62305, made according Berger research documents [10], [47], [53].The basic of the 'charge transfer system' is presented, developed by Carpenter, and in addition to this theory is the recently published theory of Rizk and his conditions of not initiating an upward leader for an object that is protected by lightning strike. Also it is high-voltage substation according to [52] and [54]. In this PhD thesis, a method for computation of additional positive charge is established for protection against direct lightning strike by the charge transfer system, which is generated over spherical electrode (ionizator) in order to get 'ultra-corona' mode, condition in which the corona current over the ionizator is not generating an upward leader. The ionizator in this computation is concerned with constant radius of curvature. The influence of the voltage increase in a very small time interval is computed and this influence is concerned in the computation of the additional space charge on the object to be protected, according to Rizk [1]. The model of the electrical thundercloud is concerned with all the electrical charge in it with its corresponding heights above ground. At the end , the condition of having minimal electrostatic field at earth is used to get the result for the additional positive charge. The computation is established by special function in Matlab, which are programmed in order to simulate a large number of values for: the electrical model of the thundercloud (positive and negative charges in thundercloud and their respective height above ground

  6. Situación funcional, autopercepción de salud y nivel de actividad física en pacientes con artrosis

    Directory of Open Access Journals (Sweden)

    Carmen Llanos Val Jiménez

    2017-04-01

    Conclusiones: En los pacientes con OA el dolor y la capacidad funcional son las dimensiones más afectadas. La situación funcional y la salud autopercibida son superiores en los pacientes activos, independientemente del número de articulaciones afectadas y de sus características sociodemográficas.

  7. 浅谈风电场110kV变电站工程建设管理%Analysis on the Construction Management of 110 kV Substation Project in Wind Farm

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

      变电站是风电场必备的集电、送电系统,其主要功能是将风电机组所发电能汇集后,通过高压线路输送到电网上。%Substation is a requisite power system for collecting and delivering electricity in wind farm. Its main function is to gather electricity generated by wind turbines and delivery the electricity to grid through the high voltage cable. The substation is a hub that connects wind farm and grid,which plays a crucial role in delivering and saleing the electricity in wind farm. e paper analyzed the engineering design, construction, commissioning and acceptance of the 110KV substation of Helan Mountain Wind Farm in Azuoqi, Inner Mongolia, explored the scienti c and rational construction techniques and modes in the process of wind farm substation engineering and provided reference for the substation construction and management of wind farm in the future.

  8. Treinamento aerobio e resistido, qualidade de vida e capacidade funcional de hipertensas

    Directory of Open Access Journals (Sweden)

    Thais Inacio Rolim Povoa

    2014-01-01

    Full Text Available INTRODUÇÃO: Pacientes hipertensos podem apresentar comprometimento da qualidade de vida (QV e da qualidade de vida relacionada à saúde (QVRS, tanto pela hipertensão arterial (HA, quanto pelos eventuais efeitos adversos do tratamento. Exercícios físicos, aeróbios e resistidos, melhoram a performance cardiorrespiratória e neuromuscular, mas há poucas evidências sobre seus efeitos na QV, QVRS e capacidade funcional (CF em mulheres hipertensas. OBJETIVO: Avaliar e comparar os efeitos dos treinamentos aeróbio e resistido sobre a QV, QVRS e a capacidade funcional em hipertensas. MÉTODOS: Ensaio clínico randomizado, cego, com total de 18 sessões de exercícios. Foram incluídas mulheres hipertensas sob tratamento medicamentoso, não participantes de programas de exercícios, com 50 anos de idade ou mais, que não apresentaram arritmias e/ou alterações isquêmicas em teste ergométrico (protocolo de Bruce. A amostra foi randomizada como segue: grupo aeróbio (GA (n = 21 e grupo resistido (GR (n = 20. Intensidade GA: leve a moderada (Escala de Borg adaptada; GR: até 50-65% de 1 RM. Duas séries com 12 a 15 repetições. Antes e após a intervenção foram aplicados os questionários WHOQOL-bref (QV e SF-36 (QVRS e realizado o teste de caminhada de 6 minutos (TC6` para avaliar a CF. Estatística: testes Shapiro-Wilk, t de Student, Fisher, U de Mann-Whitney e Wilcoxon. Nível de significância: p 0,05. Após a intervenção houve melhora significativa em todos os domínios do WHOQOL-bref no GA e no GR houve melhora no domínio aspectos físicos. No SF-36, constatou-se melhora significativa em sete de oito domínios tanto no GA quanto no GR. Capacidade funcional: verificou-se melhora nos dois grupos (p < 0,001. CONCLUSÃO: Os dois tipos de treinamento melhoraram a QV e a CF e, dependendo dos objetivos estabelecidos, ambos podem ser eficazes.

  9. Desempenho funcional de crianças com mielomeningocele Functional performance of children with myelomeningocele

    Directory of Open Access Journals (Sweden)

    Luanda André Collange

    2008-01-01

    Full Text Available Este trabalho visou analisar o impacto dos níveis de lesão, deambulação e alterações neurológicas associadas ao quadro clínico da mielomeningocele sobre o desempenho funcional de seus portadores. Neste estudo transversal prospectivo foram examinadas 40 crianças com mielomeningocele, avaliando-se nível de lesão, deambulação, malformação de Arnold-Chiari, hidrocefalia, hidromielia, medula ancorada e incontinência esfincteriana. O desempenho funcional foi avaliado pelo Pediatric Evaluation of Disability Inventory (PEDI, para um registro quantitativo da capacidade funcional e autonomia nas atividades cotidianas, nas áreas de autocuidado, mobilidade e função social. Os dados coletados foram analisados estatisticamente, estabelecendo-se o nível de significância em pThis study aimed at analysing the impact of level of lesion, locomotion, and neurological changes associated to meningomyelocele clinical framework concerning functional performance. For this prospective cross-sectional study 40 children with meningomyelocele were assessed as to level of lesion, ambulatory ability, Arnold-Chiari malformation, hydrocephalus, hydromyelia, tethered cord, and sphincter incontinence. Functional performance was evaluated by the Pediatric Evaluation of Disability Inventory (PEDI which quantitatively assesses functional performance and independence in daily activities in the areas of self-care, mobility, and social functioning. Collected data were statistically analysed and the significance level set at p<0.05. Lesion levels and ambulatory ability had a significant (p<0.01 impact on scores of all three PEDI areas. Limitation degree was found to be directly proportional to level of lesion. Functional performance was more severely affected in self-care and mobility activities, and the best functional scores being obtained in social functioning. In patients with thoracic lesion level, symptomatic hydromyelia proved to be a significant factor for

  10. Farinha de banana verde como ingrediente funcional em produtos alimentícios

    Directory of Open Access Journals (Sweden)

    Andréa dos Anjos Silva

    2015-12-01

    Full Text Available RESUMO: Nos últimos anos, a banana verde tem despertado interesse do mercado consumidor, pois, além do aspecto nutricional, destaca-se a presença de compostos funcionais, em especial o amido resistente. Contudo, sua adstringência limita seu consumo e sua comercialização em forma de farinhas é a principal forma de consumo e utilização, como ingrediente funcional. O objetivo do presente trabalho foi avaliar os potenciais usos da farinha de banana verde (FBV na elaboração de produtos alimentícios e os principais métodos de obtenção, e seus efeitos sobre a qualidade físico-química, sensorial e funcional das farinhas obtidas. Fatores como tipo de cultivar ou variedade da fruta, presença ou ausência de casca, técnica de desidratação e condições de operação do equipamento influenciam as características físico-químicas, tecnológicas e funcionais da FBV. A FBV tem sido utilizada como ingrediente funcional na elaboração de diferentes produtos alimentícios, como pão, biscoito cookie, pré-mistura de bolo, snacks, nuggets e, sobretudo, na elaboração de massas alimentícias. De forma geral, o emprego de FBV e produtos alimentícios promove a melhoria de suas propriedades funcionais, devido ao aumento do teor de amido resistente, compostos fenólicos e da atividade antioxidante. A FBV também reduz o teor e a porcentagem de hidrólise do amido digerível e, consequentemente, do índice glicêmico dos produtos, que apresentaram potencial para compor a dieta, principalmente de indivíduos diabéticos e obesos. A FBV pode ser amplamente utilizada tanto pela indústria de alimentos (pães, biscoitos, macarrão, etc., como ingrediente na preparação de pratos prontos e na elaboração de produtos cárneos.

  11. Condições do letramento funcional em saúde de um grupo de idosos diabéticos

    Directory of Open Access Journals (Sweden)

    Maria Izabel Penha de Oliveira Santos

    2016-02-01

    Full Text Available RESUMO Objetivo: foi avaliar as condições de letramento funcional em saúde de um grupo de idosos diabéticos. Método: estudo seccional e descritivo, com idosos diabéticos assistidos no SUS (N = 114. Avaliaram-se os condicionantes sociais e da saúde, bem como de letramento funcional em saúde pelo teste S-TOFHLA(versão-breve; descreveram-se as proporções simples, média, desvio-padrão e teste do Qui-quadrado de Pearson pelo software SPSS (20.0 com valor α = 5%. Resultados: a média da idade foi 67,4 anos, 74,0% dos idosos eram mulheres, possuíam até 4 anos de escolaridade; 29,8% tinham a doença de longa data, 64,0% relataram ter hipertensão arterial, 47,4% eram ou foram fumantes, 73,7% apresentaram baixo letramento funcional em saúde, que se mostrou associado com a escolaridade p = 0,001. Conclusões: o baixo letramento funcional em saúde pode ser condicionante do autocuidado e pode ser influenciado pela baixa escolaridade, pois implica em ter habilidades para compreender e tomar decisões voltadas à autogestão da saúde.

  12. PROPUESTA METODOLÓGICA PARA DESARROLLAR UN PROGRAMA CON PROGRAMACIÓN ESTRUCTURADA A PARTIR DEL PARADIGMA FUNCIONAL

    Directory of Open Access Journals (Sweden)

    Omar Iván Trejos Buriticá

    2013-01-01

    Full Text Available El presente artículo es producto de un Proyecto de Investigación 1 desarrollado en el área de la programación de computadores y su relación con los procesos de aprendizaje que se involucran alrededor de ella. En este artículo se plantea una metodología para el desarrollo de programas que se basa en la programación estructurada, pero tomando como base los conceptos centrales del Paradigma Funcional para su desarrollo. Se busca con esta propuesta metodológica enfrentar y solucionar los tres grandes problemas de la programación e igualmente, se persigue la simplificación de la programación estructurada a partir de la utilización de funciones. Se acude a una concepción general del programa a realizar y se va desglosando poco a poco, al tiempo que se construyen funciones que cumplan con los micro-objetivos planteados. Se ha encontrado que, para los estudiantes, es una forma muy sencilla y simplificada de concebir tanto el paradigma estructurado como el paradigma funcional y que su relación facilita la comprensión de los conceptos asociados a dichos paradigmas.

  13. Reparación de la insuficiencia mitral funcional mediante abordaje del aparato subvalvular. Resultados a medio plazo

    Directory of Open Access Journals (Sweden)

    Álvaro Pedraz-Prieto

    2017-07-01

    Conclusiones: El abordaje del aparato subvalvular en la reparación de la insuficiencia mitral funcional se presenta como una alternativa válida en el tratamiento de este tipo de insuficiencia, ofreciendo buenos resultados en lo que a evolución postoperatoria y tasa de recidiva a medio plazo se refiere.

  14. Tests and putting in service of the equipment of a power substation; Pruebas y puesta en servicio del equipo de una subestacion

    Energy Technology Data Exchange (ETDEWEB)

    Raull Martin, J. [Facultad de Ingenieria, UNAM, Mexico, D.F. (Mexico)

    2001-09-01

    The purpose of this paper is to present a summarized version of the test series required to determine out the final condition of the isolations, the continuity of the control circuits, as well as protection, measurement, sign-posting; alarms and the total substation performance. [Spanish] El proposito de este articulo es presentar en forma compacta la serie de pruebas que se requieren para determinar el estado final de los aislamientos, la continuidad de los circuitos de control, proteccion, medicion, senalizacion, alarmas, asi como el funcionamiento del conjunto de la subestacion.

  15. New conceptual design for offshore wind power substations; Nuevo diseño conceptual de subestación eólica marina

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2016-07-01

    The presentation of the new offshore wind power substation project, Marin-el, took place last December at an event held at the Higher School of Naval Engineering (ETSIN), part of the Universidad Politécnica de Madrid (UPM). The project is headed up by Iberdrola and backed by the Government of the Basque Country with a project consortium featuring the participation of the Tecnalia technological centre and the Construcciones Navales del Norte (La Naval) shipyard among other firms from the naval and renewable energies sectors. (Author)

  16. Guidelines for the development of applicative software for supervising and remote electric power substations; Diretrizes de desenvolvimento de softwares aplicativos para as estacoes supervisoras e remotas

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Guilherme Moutinho; Soares, Wellington Zakhia; Morais, Arnoldo Magela [Companhia Energetica de Minas Gerais (CEMIG), Belo Horizonte, MG (Brazil)

    1995-12-31

    The increasing application of remote control supervision systems composed of regional operation centers (COR) and remote terminal units (UTR) creates the adequate conditions for the development and implementation of operational engineering functions in electric power substations (SE). In order to provide the necessary elements for such qualitative improvement, this work presents guidelines for the development of applicative soft-wares for the local control and supervision to be installed in CORs and UTRS, based in CEMIG`s, the electric power company of Minas Gerais State - Southeast Brazil, experience 4 refs.

  17. La dispepsia funcional: Aspectos biopsicosociales, evaluación y terapia psicológica

    Directory of Open Access Journals (Sweden)

    Stefano Vinaccia Alpi

    2008-09-01

    Full Text Available Se abordan los aspectos conceptuales del trastorno gastrointestinal Dispepsia funcional (DP, en lo que se refiere a su definición, prevalencia, clasificación y diagnóstico.; las causas y consecuencias de la DF desde una perspectiva biopsicosocial (variables socioeconómicas, demandas psicosociales, evaluación cognitiva y estrategias de afrontamiento, personalidad y comportamiento, mecanismos psicobiológicos, calidad de vida, tratamiento y evolución; la evaluación psicológica de la DF desde la perspectiva procesual; y la intervención psicológica, con énfasis en el enfoque cognitivo conductual.

  18. ?`Es necesario calcular detalladamente funciones de partición atómicas?

    Science.gov (United States)

    Milone, L. A.; Merlo, D. C.

    Basándonos en extensos y precisos cómputos de funciones de partición realizados por nosotros para distintos átomos, se muestra que en el cálculo u obtención de ciertas magnitudes (notablemente la presión electrónica, la abundancia de un elemento deducida a partir de un estado fuertemente ionizado, etc.) el error porcentual que se comete es pequeño (inferior a 1 %) si se adopta, como valor de la función de partición, el peso estadístico del término correspondiente al estado fundamental del átomo. Esta notable simplificación acelera el cálculo, por ejemplo, de un modelo de atmósfera estelar, sin disminuir la precisión de los resultados.

  19. Desempeño en funciones ejecutivas en escolares por subtipo de TDAH

    OpenAIRE

    Rodríguez Sánchez, Sandra Catalina

    2012-01-01

    El objetivo de esta investigación fue comparar el desempeño en tareas de funciones ejecutivas en niños y niñas en edad escolar según el subtipo de Trastorno por Déficit de Atención con Hiperactividad (TDAH): Hiperactivo-impulsivo (TDAH-H), inatento (TDAH-I) y combinado (TDAH-C), comparados con un grupo de niños normales. La muestra fue 40 escolares entre 7 y 12 años, estrato socioeconómico muy bajo y bajo. El diseño fue descriptivo, comparativo, transversal y el análisis fue no paramétrico. S...

  20. Desarrollo de un manual de funciones para la Cámara de Industrias de Costa Rica

    OpenAIRE

    López Motenegro, Roberto

    2004-01-01

    Tesis de maestría -- Universidad de Costa Rica. Posgrado en Administración y Dirección de Empresas. Maestría Profesional en Administración y Dirección de Empresas con énfasis en Gerencia, 2004 El objetivo general de este trabajo es abordar el estudio de la administración de los recursos humanos a partir de una de sus dimensiones como lo es el diseño y distribución de funciones en una organización. Para ello, complementa el trabajo de investigación bibliográfica con el trabajo de campo par...

  1. Maturação funcional da retina em bebês prematuros

    Directory of Open Access Journals (Sweden)

    Adriana Berezovsky

    2007-06-01

    Full Text Available A retina humana ainda não está totalmente desenvolvida no nascimento. Só após o nascimento é que ocorrem mudanças anatômicas como o aumento na densidade de cones centrais e o alongamento do segmento externo dos fotorreceptores. As mudanças funcionais que ocorrem na retina com a maturação no primeiro ano de vida podem ser avaliadas pela técnica do eletrorretinograma de campo total, que representa a atividade somada da retina distal em resposta à luz. Abordaremos aspectos da maturação funcional da retina avaliada pelo eletrorretinograma em bebês prematuros.

  2. Perfiles de personas con diferencia mental basados en las funciones motrices gruesas

    Directory of Open Access Journals (Sweden)

    Isabel Ma. Ferrándiz Vindel

    2002-01-01

    Full Text Available El propósito de este estudio ha sido identificar posibles subtipos de alumnos con Deficiencia Mental basados en funciones motrices gruesas. Se seleccionó un grupo de alumnos de un centro específico de Deficiencia Mental, que no presentaron deficiencias motóricas asociadas, y se les administraron los subtests de motricidad gruesa del «Test Bruininks-Ozeretsky para medir la eficacia motriz»- Los cuatro subtipos resultantes mostraron diferentes perfiles de desarrollo motor A partir de estos resultados, se recomienda diseñar programas específicos que intenten paliar los trastornos motrices gruesos, analizados para cada uno de los subtipos hallados, y realizar adaptaciones curriculares pertinentes, teniendo en cuenta los perfiles motrices estudiados

  3. Artropatia de manguito: o que esperar do resultado funcional da artroplastia reversa?

    Directory of Open Access Journals (Sweden)

    Rodrigo Caldonazzo Fávaro

    2015-10-01

    Full Text Available resumo Objetivo: Avaliar o resultado funcional da artroplastia reversa, suas complicações e relações com os tipos de lesões. Métodos: Foram tratados 27 ombros, de 26 mulheres e um homem. Os pacientes foram avalia dos pela escala funcional de UCLA. O modelo de implantes usado foi o Delta Xtend Depuy(r. As lesões foram classificadas segundo Seebauer para o grau de artropatia e Nerot para o notching. Resultado: Aidade média foi de 77,4 (67-89, o seguimento foi de 25,8 meses (6-51, o UCLA pré era de 10,1 (6-15 e o UCLA pós foi de 29,8 (22-35, com uma melhoria estatisticamente signi ficativa (p < 0,001. Pela classificação de Seebauer, cinco eram 1B, 19 eram 2 A e três eram 2 B. Tivemos 15 complicacões (55,5%, o notching foi o mais comum e ocorreu em 14 pacientes, nove deles grau I e cinco grau II, mas nenhum deles gerou instabilidade. Apenas uma paci ente (3,7% teve complicação maior, com luxacão no pós-operatório imediato. Dois pacientes (7,4% alegaram que não repetiriam o procedimento. Uma paciente (3,7% foi submetida a revisão. Conclusão: A artroplastia reversa mostrou-se uma excelente opção para o tratamento de pacientes com artropatia do manguito rotador com baixo índice de complicações maio res. O notching é uma complicação frequente, mas que na maioria dos casos não apresenta repercussão clínica

  4. SIGNIFICADO DE LAS FUNCIONES FAMILIARES EN ADOLESCENTES ITALIANOS. NUEVAS FRONTERAS ENTRE PATERNO Y MATERNO

    Directory of Open Access Journals (Sweden)

    Maricela Osorio Guzmán

    2008-07-01

    Full Text Available El presente estudio tuvo como objetivo explorar el significado que una muestra de adolescentes y adolescentes tardíos del sur de Italia atribuye a las funciones familiares, para analizar la relación entre la percepción de las transformaciones de las funciones paternas y maternas —en particular la carencia de roles normativos y de contención afectiva— y la agresividad como modalidad preferencial de gestión del conflicto. Se aplicó un diferencial semántico (DF, De Rosa, Parrello, & Sommantico, 2006 y un instrumento de agresividad, adaptado a población europea (AQ, Buss & Perry, 1992, 2003 a 259 sujetos, de edad comprendida entre los 17 y los 35 años, divididos en dos grupos, 139 de bachillerato y 120 de licenciatura. Los resultados del análisis del DF indicaron un perfil monofactorial, a diferencia del trifactorial obtenido por Osgood, Suci y Tannembaum (1957, mientras que en el AQ se encontraron diferencias significativas entre la media de la agresividad general (ξ=2,73 y factores del instrumento como agresividad verbal (ξ=3,29, la rabia (ξ=2,86 y hostilidad (ξ=2,86. Se concluye que las cualidades de tamaño y seguridad le son atribuidas específicamente a la madre, y que el nivel de agresividad verbal supera el índice de agresividad general.

  5. Flexibilidad funcional en la dirección estratégica de los recursos humanos

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    Susana Fernández Pérez de la Lastra

    2015-01-01

    Full Text Available En los últimos años la literatura estratégica ha puesto especial énfasis en la flexibilidad de las estructuras y de los mecanismos de gestión, como una condición necesaria para competir en los entornos empresariales actuales. En el ámbito de la dirección estratégica de los recursos humanos, se observa una falta de consenso en la concreción del concepto de flexibilidad funcional teniendo implicaciones negativas para la investigación; además, existen escasos trabajos desarrollados en torno a este tópico. El artículo tiene como objetivo ofrecer una conceptualización general integradora de la flexibilidad estratégica de los recursos humanos, enfatizando en su dimensión funcional. Para desarrollar el análisis teórico propuesto, se siguió un diseño de investigación no experimental - documental, mediante la búsqueda sistemática de la literatura académica relevante, considerando tipos de publicaciones, bases de datos y palabras clave, con el objetivo de identificar y clasificar las contribuciones más importantes. Este análisis de la literatura tiene como resultado una definición de dicho constructo que recoge las distintas perspectivas así como la identificación de sus dimensiones. Igualmente se establece un modelo de medida fruto de la integración de varias escalas de medición validadas en la literatura organizativa.

  6. Evolução funcional de pacientes graves submetidos a um protocolo de reabilitação precoce

    Directory of Open Access Journals (Sweden)

    Fernanda Murata Murakami

    2015-06-01

    Full Text Available RESUMO Objetivo: Avaliar a evolução funcional dos pacientes submetidos a um protocolo de reabilitação precoce do paciente grave da admissão até a alta da unidade de terapia intensiva. Métodos: Foi conduzido um estudo transversal retrospectivo, incluindo 463 pacientes adultos com diagnóstico clínico e/ou cirúrgico, submetidos a um protocolo de reabilitação precoce. A força muscular global foi avaliada na admissão da unidade de terapia intensiva por meio da escala Medical Research Council. De acordo com a pontuação da Medical Research Council os pacientes foram alocados em um dos quatro planos de intervenção, de acordo com a adequação ou não desses parâmetros, com a escala crescente do plano significando melhor status funcional. Os pacientes não colaborativos foram alocados nos planos de intervenção, conforme seu status funcional. A força muscular global e/ou o status funcional foram reavaliados na alta da unidade de terapia. Por meio do comparativo entre o plano de Intervenção na admissão (Planoinicial e na alta (Planofinal. Os pacientes foram categorizados em três grupos, de acordo com a melhora ou não do status funcional: respondedores 1 (Planofinal > Planoinicial, respondedores 2 (Planofinal = Planoinicial e não respondedores (Planofinal < Planoinicial. Resultados: Dos 463 pacientes submetidos ao protocolo, 432 (93,3% pacientes responderam positivamente à estratégia de intervenção, apresentando manutenção e/ou melhora do status funcional inicial. Os pacientes clínicos classificados como não respondedores apresentaram idade superior (74,3 ± 15,1 anos; p = 0,03 e maior tempo de internação na unidade de terapia intensiva (11,6 ± 14,2 dias; p = 0,047 e no hospital (34,5 ± 34,1 dias; p = 0,002. Conclusão: A manutenção e/ou melhora do status funcional admissional esteve associada com menor tempo de internação na unidade de terapia intensiva e hospitalar. Os resultados sugerem que o tipo de diagn

  7. Scheme of substations: circuit breakers topology; El esquema de S.E.: interruptor y medio y algunas variantes del mismo, a la luz de la gestion privada de instalaciones de servicio publico

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez, Maximo B. [Sade Skanska S.A. (Argentina)

    2001-07-01

    This work approaches a topological scheme applicable for the entrance circuit breakers which are used in high voltage substations and also in substations from the rated voltage class of 115 Kv by many countries. It is a safe scheme due to providing a double connection for the feeder cables and more economical than the double circuit breakers option. Nevertheless, the scheme has some restrictions as follows: a) The premises of continuity are not accomplished in small substations b) It is possible to occur a responsibility conflict in relation to the main circuit breaker. In the private administration of public service facilities multiples jurisdictions can appear which require well defined limits, and the penalties due to outages can be minimized.

  8. Viability of conventional compact electric power substations in medium size cities - case study Sorocaba`s DTS; Viabilidade de subestacoes compactas convencionais em cidades de medio porte: caso pratico ETD Sorocaba

    Energy Technology Data Exchange (ETDEWEB)

    Guaraldo, N J; Goncalves, S M [Eletricidade de Sao Paulo SA, SP (Brazil); Sant` Anna, P B.E.; Fleury, V F; Moura Filho, W [CHROMA Engenharia (Brazil)

    1994-12-31

    This work presents the viability of compact transformers distributing power substations of in medium size cities, giving emphasis to three main aspects. The first aspect is generic and concerns the compactation economic viability, when compared to the conventional solution. The second, specific to the case of Sorocaba, in addition to present two compact disposal for the power substation, registers the opportunity for obtaining resources from the private enterprise. The third aspect takes into consideration the compatibility of technical proposals with the architecture of the cities. 2 refs., 10 figs., 1 tab.

  9. Korean district heating. Part 2: Investigation of the consumption pattern in a substation at Korea District Heating Corporation at the turn of the year 1994/95

    Energy Technology Data Exchange (ETDEWEB)

    Joensson, Mats; Olsson, Nils

    1996-05-01

    This thesis, which is the second part of two, analyses the consumption pattern and the conditions for district heating in the Republic of Korea at the turn of the year 1994-95. It is based on a study made in Seoul at Korea District Heating Corporation which is the largest district heating utility in Korea. District heating was introduced in the 80s because of the environmental advantages. In 1994 KDHC provided 340 000 households with district heating. KDHC receives most of its thermal energy from combined heat and power plants which use natural gas as fuel. One substation was chosen for the investigation and temperature, flow, and pressure were measured. A typical Korean substation has heat exchangers connected in parallel in only one step and the apartment complexes use floor heating for internal heating. The space heating load shows a linear relation to the outdoor temperature. The hot tap-water consumption shows a highly varying pattern with peak loads in the morning and evening. There were also an oscillating pattern for some of the temperatures and flows caused by poor regulation. DH suits very well to Korea with its climate and the overpopulated cities. KDHC:s expansion will help to make Korea one of the leading countries in modern district heating. 10 refs, 36 figs, 11 tabs

  10. New technologies for substations: non-conventional measurement transformer's; Impact des nouvelles technologies dans les postes. Exemple des transformateurs de mesure non conventionnels

    Energy Technology Data Exchange (ETDEWEB)

    Dupraz, J.P.; Jung, T. [ALSTOM T et D, 91 - Bretigny sur Orges (France)

    2002-01-01

    NCITs have been introduced in High Voltage substations a long time ago, but their use remains rather scarce. Despite their obvious advantages, they are often perceived as more complex, less reliable and more expensive than conventional technologies. All these drawbacks are rapidly fading now, especially for VHV and HV fields. It is now possible to assess reliability and availability of complex electronic systems, with digital outputs (point-to-point or connected to a process-bus) which are redundant and, sometimes, fault-tolerant. Tools coming from the electronics industry like predictive reliability calculations and field experience coming from other industries using the same type of transducers make it possible to define precisely the MTTF, MTBF and MTTR of the equipment, although their use often implies a complete change of technical culture compared to the conventional technology. Some topics related to these calculations are detailed in this report. Some questions related to the service time of substation components versus electronic components obsolescence will also be discussed as well as maintenance related issues. (authors)

  11. Ergonomic analyse of operation work in electric energy transmission substation; Analise ergonomica do trabalho de operacao de subestacoes de transmissao de energia eletrica

    Energy Technology Data Exchange (ETDEWEB)

    Menegon, Nilton Luiz

    1993-04-01

    The activity by the workers in sub-stations which transmits and distributes electric energy is studied within the context of ergonomic, i.e., of its adequateness to the human being characteristics. In the introduction of this book the ideas of ergonomic related to the behaviour of the workers who works which continuous processes in control room are reviewed. The development of the ideas in this field as well as the methodology to be followed in this work are discussed. The technical system involving the activities of the workers in sub-station is presented. These activities are inserted within a broad context of the electric energy sector. An analysis concerning the problems in the ergonomic field which justifies the ergonomic intervention follows the previous study. The work situation is characterized. The formal organization of the work and its physical and cognitive demands are examined. The task is explained in detail. With the analysis of the activities based on the systematic observation of the work performed by the workers, we finish this study. Finely, a diagnosis of the work situation and the recommendations compromised whit the workers health and improvement of the performance is settled. (author) 27 refs., 26 figs.

  12. Implementation of computational model for the evaluation of electromagnetic susceptibility of the cables for communication and control of high voltage substations; Implementacao de modelo computacional para a avaliacao da suscetibilidade eletromagnetica dos cabos de comunicacao e controle de subestacoes de alta tensao

    Energy Technology Data Exchange (ETDEWEB)

    Sartin, Antonio C.P. [Companhia de Transmissao de Energia Eletrica Paulista (CTEEP), Bauru, SP (Brazil); Dotto, Fabio R.L.; Sant' Anna, Cezar J.; Thomazella, Rogerio [Fundacao para o Desenvolvimento de Bauru, SP (Brazil); Ulson, Jose A.C.; Aguiar, Paulo R. de [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Bauru, SP (Brazil)

    2009-07-01

    This work show the implementation of a electromagnetic model for supervision cable, protection, communication and high voltage substations control that was investigated in literature and adapted. The model was implemented by using a computational tool in order to obtain the electromagnetic behavior of various cables used in CTEEP substation, subject to several sources of electromagnetic interference in this inhospitable environment, such as lightning strikes, outbreaks of maneuvers switching and the corona effect. The results obtained in computer simulations were compared with results of laboratory tests carried out on a lot of cables that represent those systems that are present in substations 440 kV. This study characterized the electromagnetic interference, ranked them, identified possible susceptible points in the substation, which contributed to the development of a technical procedure that minimizes unwanted effects caused in communication systems and substation control. This developed procedure also assured the maximum reliability and availability in the operation of the electrical power system to the company.

  13. Gas insulated substations

    CERN Document Server

    2014-01-01

    This book provides an overview on the particular development steps of gas insulated high-voltage switchgear, and is based on the information given with the editor's tutorial. The theory is kept low only as much as it is needed to understand gas insulated technology, with the main focus of the book being on delivering practical application knowledge. It discusses some introductory and advanced aspects in the meaning of applications. The start of the book presents the theory of Gas Insulated Technology, and outlines reliability, design, safety, grounding and bonding, and factors for choosing GIS. The third chapter presents the technology, covering the following in detail: manufacturing, specification, instrument transformers, Gas Insulated Bus, and the assembly process. Next, the book goes into control and monitoring, which covers local control cabinet, bay controller, control schemes, and digital communication. Testing is explained in the middle of the book before installation and energization. Importantly, ...

  14. Dor neuropática central após lesão medular traumática: capacidade funcional e aspectos sociais

    OpenAIRE

    Vall, Janaina; Braga, Violante Augusta Batista

    2005-01-01

    Estudo de caso comparativo com o objetivo de avaliar a capacidade funcional e os aspectos sociais de dois pacientes, ambos com lesão medular traumática, sem e com dor neuropática central associada, respectivamente. Para avaliar a capacidade funcional, foi utilizado como instrumento o Functional Independence Measure ou Escala de Independência Funcional. E para avaliar os aspectos sociais foi construído o ecomapa de cada paciente, preconizado pelo modelo Calgary de avaliação de famílias. Ambos ...

  15. Aproveitamento de nutrientes e de energia da ração de codornas japonesas em postura com o uso de fitase Nutrient and energy utilization from the feedings of laying Japanese quails by using phytase

    Directory of Open Access Journals (Sweden)

    Heder José D'Avila Lima

    2010-07-01

    Full Text Available O experimento foi realizado para avaliar o efeito da adição de fitase no aproveitamento dos ingredientes da ração para codornas. Foram utilizadas 200 codornas japonesas fêmeas com 251 dias de idade, peso médio de 187,2 ± 6,0 g e taxa de produção de ovos de 84,8%, distribuídas em delineamento inteiramente casualizado com quatro dietas experimentais e cinco repetições de dez aves por unidade experimental. As dietas experimentais consistiram de uma ração basal à base de milho e farelo de soja, formulada para atender às exigências nutricionais das codornas e às recomendações da matriz da fitase, suplementada com 0, 200, 400 ou 600 unidades de fitase (uf/kg. Utilizando-se o método de coleta total de excretas, foram determinados os valores de matéria seca ingerida, matéria seca excretada, energia metabolizável aparente (EMA, energia metabolizável aparente corrigida pela retenção de nitrogênio (EMAn e os coeficientes de metabolizabilidade da energia corrigida ou não pelo balanço de nitrogênio. Foi calculada também a quantidade de fósforo, cálcio e nitrogênio retido por ave/dia. De maneira geral, houve melhora no aproveitamento da energia das rações com a suplementação de fitase. Os níveis de 195 e 186 uf/kg resultaram em maior aproveitamento da EMA e EMAn. Não houve diferença na retenção de fósforo e cálcio. O nível de 600 (uf/kg promove menor excreção de nitrogênio, porém o de 368 uF/kg é suficiente para máxima retenção de nitrogênio pelas codornas.This experiment was conducted to evaluate the effect of phytase addition on the use of feeding ingredients for laying quails. It was used 200 female Japanese quails at 251 days of age at an average weight of 187.2 ± 6.0 g and egg production rate of 84.8%. The quails were distributed in a complete random design with four experimental diets and five repetitions of ten birds per experimental unity. The experimental diets were consisted of corn and

  16. Lo orgánico y lo funcional en psiquiatría

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    Roberto Anselmo Ramos Valverde

    2014-08-01

    Full Text Available El desarrollo acelerado de las neurociencias en las últimas dos décadas permitió rescatar al cerebro de las sombras cartesianas donde se encontraba condenado, demostrándose que todo fenómeno psíquico, normal o morboso, tiene como sustento material a este órgano gestor de las funciones psíquicas. De esta manera quedó esclarecido que los trastornos mentales desencadenados por acontecimientos psicosociales estresantes actúan sobre el cerebro, provocando cambios neuroquímicos a nivel molecular responsables de la sintomatología que los tipifica, conjugándose etiopatogénicamente los factores biológicos, psicológicos y sociales gestores de estos desórdenes mentales. (1 Se distinguen en psiquiatría dos tipos de perfiles clínicos que los clásicos semiólogos clasificaron en síndromes orgánicos y funcionales; los primeros causados por alteraciones estructurales a nivel histopatológico en el cerebro o sus envolturas, nombradas afecciones orgánicas propiamente dichas, y síntomáticas cuando afectan el metabolismo cerebral a distancia; los segundos sustentan los cambios a nivel molecular, afectando la constitución química del cerebro por factores psicosociales, hereditarios y congénitos. (1 Los avances neurobiológicos esclarecen la multicausalidad de los trastornos mentales y el papel organogénico del cerebro, sustentado en su capacidad intrínseca de reflejar la realidad objetiva, que al perderse origina el espectro psicopatológico que hoy conocemos. (2 Algunos autores contemporáneos a partir del resurgimiento del protagonismo cerebral en la cristalización de los trastornos mentales, plantean que las fronteras entre lo orgánico y lo funcional se quebraron y que la enfermedad mental es orgánica en toda su extensión dada la obligada participación etiológica del cerebro. Soy del criterio que la actual omnipresencia cerebral en la generación de los procesos psicológicos, es sin duda, una virtud trascendente de la ciencia

  17. Fatores determinantes da capacidade funcional entre idosos Determinant factors of functional status among the elderly

    Directory of Open Access Journals (Sweden)

    Tereza Etsuko da Costa Rosa

    2003-02-01

    Full Text Available OBJETIVO; Investigar a influência de fatores socioeconômicos e demográficos relativos à saúde, bem como os fatores ligados às atividades sociais e à avaliação subjetiva da saúde sobre a capacidade funcional dos idosos. MÉTODOS: Estudo transversal, integrante de estudo multicêntrico, em amostra representativa do município de São Paulo, realizado em 1989. A capacidade funcional foi avaliada através da escala de atividades da vida diária pessoal e instrumental e investigada como variável dicotômica: ausência de dependência - incapacidade/dificuldade em nenhuma das atividades versus presença de dependência moderada/grave - incapacidade/dificuldade em 4 ou mais atividades. Análise de regressão logística múltipla foi aplicada aos fatores hierarquicamente agrupados. RESULTADOS: As características que se associaram com a dependência moderada/grave foram analfabetismo, ser aposentado, ser pensionista, ser dona de casa, não ser proprietário da moradia, ter mais de 65 anos, ter composição familiar multigeracional, ter sido internado nos últimos 6 meses, ser "caso" no rastreamento de saúde mental, não visitar amigos, ter problemas de visão, ter história de derrame, não visitar parentes e ter avaliação pessimista da saúde ao se comparar com seus pares. CONCLUSÕES: As características identificadas que se associaram à dependência moderada/grave sugerem uma complexa rede causal do declínio da capacidade funcional. Pode-se supor, entretanto, que ações preventivas especificamente voltadas para certos fatores podem propiciar benefícios para o prolongamento do bem estar da população idosa.OBJECTIVE: To investigate the impact of health-related demographic and socioeconomic factors, as well as the impact of factors associated to social activity and the subjective health evaluation on the functional status of elderly people. METHODS: A cross-sectional multicentric study was conducted in a representative population

  18. PRODUÇÃO DE QUEIJO TIPO QUARK FUNCIONAL CONTENDO EXOPOLISSACARÍDEOS

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    Tatia Tie Yuhara

    2015-01-01

    Full Text Available Alimentos com bactérias probióticas ou prebióticos estão incluídos na categoria de alimentos contendo compostos bioativos que tem despertado interesse devido ao efeito benéfico sobre a saúde. O objetivo do trabalho foi a formulação de produto simbiótico e funcional com bactérias láticas probióticas produtoras de exopolissacarídeos (EPS. Para isto, promoveu-se a fermentação por 24 h a 37 ºC de soro de leite em pó e leite desnatado em duas formulações: “F1” contendo o prebiótico goma acácia e inoculada de bactéria probiótica Lactobacillus casei LC1, e “F2” formulada com inulina como prebiótico e fermentação por L. acidophilus LA5. Nos produtos fermentados foi determinada a quantidade de EPS produzida pelos diferentes probióticos e os valores encontrados foram de 103,5 mg/100g (F1 e 109,2 mg/100g (F2. Verificou-se que os produtos apresentaram estabilidade microbiológica e físico-química com contagens de probióticos ao final de 21 dias de armazenamento refrigerado de 2,5x109 UFC/g, pH 3,98 e 32% de extrato seco total (EST para F1 e 6,0x108 UFC/g, pH 4,16 e 31,5% EST para F2, ausência S. aureus e de coliformes. Conclui-se que o queijo Quark funcional apresentou altas contagens de bactérias láticas probióticas e presença de EPS, níveis estes importantes para a ação como alimentos funcionais e sobrevivência no trato gastrointestinal.

  19. MAXWELL EQUATIONS FOR A GENERALISED LAGRANGIAN FUNCTIONAL ECUACIONES DE MAXWELL PARA UNA FUNCIONAL DE LAGRANGE GENERALIZADA

    Directory of Open Access Journals (Sweden)

    Héctor Torres-Silva

    2008-11-01

    Full Text Available This work deals with the problem of the construction of the Lagrange functional for an electromagnetic field. The generalised Maxwell equations for an electromagnetic field in free space are introduced. The main idea relies on the change of Lagrange function under the integral action. Usually, the Lagrange functional which describes the electromagnetic field is built with the quadrate of the electromagnetic field tensor . Such a quadrate term is the reason, from a mathematical point of view, for the linear form of the Maxwell equations in free space. The author does not make this assumption and nonlinear Maxwell equations are obtained. New material parameters of free space are established. The equations obtained are quite similar to the well-known Maxwell equations. The energy tensor of the electromagnetic field from a chiral approach to the Born Infeld Lagrangian is discussed in connection with the cosmological constant.Se aborda el problema de la construcción de la funcional de Lagrange de un campo electromagnético. Se introducen las ecuaciones generalizadas de Maxwell de un campo electromagnético en el espacio libre. La idea principal se basa en el cambio de función de Lagrange en virtud de la acción integral. Por lo general, la funcional de lagrange, que describe el campo electromagnético, se construye con el cuadrado del tensor de campo electromagnético. Ese término cuadrático es la razón, desde un punto de vista matemático, de la forma lineal de las ecuaciones de Maxwell en el espacio libre. Se obtienen las ecuaciones no lineales de Maxwell sin considerar esta suposición. Las ecuaciones de Maxwell obtenidas son bastante similares a las conocidas ecuaciones de Maxwell. Se analiza el tensor de energía del campo electromagnético en un enfoque quiral de la Lagrangiana de Born Infeld en relación con la constante cosmológica.

  20. Correlação entre a dinamometria e teste funcional em atletas de handebol

    Directory of Open Access Journals (Sweden)

    Fabiano Fernandes da Silva

    2014-06-01

    Full Text Available INTRODUÇÃO: São poucas as informações que relacionam testes funcionais com testes mais precisos, como a dinamometria isocinética. OBJETIVO: Correlacionar as variáveis isocinéticas pico de torque (PT, potência média (PM e trabalho total (TT de rotadores internos de ombro em atletas de handebol do gênero masculino com o teste funcional de arremesso de medicine ball (AMB. MÉTODOS: Participaram desse estudo 25 atletas amadores de handebol do gênero masculino com idade média 17,72 ± 2,16 anos. A coleta de dados foi realizada em dois dias diferentes, respeitando intervalo mínimo de 48 horas entre as sessões. De maneira aleatória, definida por sorteio, os atletas faziam o teste isocinético ou o teste de AMB. Para o teste de AMB, o atleta deveria arremessar uma medicine ball de 3 kg a maior distância possível. Para análise isocinética, foram utilizadas as velocidades de 60°/s e 180°/s avaliando a capacidade muscular dos músculos rotadores internos de ombro. Para análise de associações foram utilizados os testes de correlação de Pearson e regressão linear simples. RESULTADOS: Foram observadas associações moderadas (0,60 ≤ r < 0,70; p<0,05 para as variáveis PT, PM e TT e o teste de AMB na velocidade de 60°/s. Além disso, observaram-se associações altas (r ≥ 0,70; p<0,05 entre as variáveis estudadas na velocidade de 180°/s. CONCLUSÃO: As variáveis isocinéticas PT, PM e TT, de rotadores internos de ombro do braço dominante de atletas de handebol do gênero masculino apresentam correlação moderada a alta com o teste funcional de AMB.

  1. Funciones de la supervición escolar en Venezuela. Aproximación a un modelo

    Directory of Open Access Journals (Sweden)

    Amada Mogollón de González

    2006-01-01

    Full Text Available Esta investigación tiene como propósito presentar la aproximación a un Modelo para las funciones de la supervisión escolar en Venezuela sustentado en los ámbitos, acción supervisora y funciones denominadas: Técnicas, Administrativas, Sociales, de Asistencia y Mediación. El modelo se fundamentó teóricamente en Kaufman, Stufflebeam, Teoría de Sistemas de Bertalanffy, enfoque humanista y jerarquía de las necesidades de Maslow. Es una investigación de campo realizada en Venezuela en los estados: Nueva Esparta, Distrito Federal, Carabobo, Lara, Táchira, Barinas y Delta Amacuro. El instrumento arrojó resultados que evidenciaron deficiencias, omisiones y ausencias durante el hecho supervisorio y su validación condujo a garantizar el éxito y calidad en la supervisión educativa venezolana.

  2. Estudo comparativo entre o aproveitamento escolar de alunos de escola de 1º grau e teste de inibição de emissões otoacústicas transientes Comparative study between school performance on first grade children and suppression of otoacoustic transient emission

    Directory of Open Access Journals (Sweden)

    Miguel Luiz de Sant’Ana Angeli

    2008-02-01

    Full Text Available O processamento auditivo é fundamental para a cognição e pode ocasionar deficiência no aprendizado. Os portadores de sua deficiência podem ser habilitados, melhorando o desempenho escolar. É fundamental identificá-los. Dentre os que apresentam baixo custo e facilidade operacional está o exame de emissões otoacústicas. TIPO DE ESTUDO: Clínico e experimental. OBJETIVO: Estudar a relação do aproveitamento escolar com a inibição da emissão otoacústica transiente por estímulo auditivo contralateral. Material e Métodos: Foram avaliados 39 alunos, de sete a doze anos, sendo 19 (48,7% com bom aproveitamento escolar e 20 (51,3% com aproveitamento inadequado. Os exames emissão otoacústica com inibição contralateral foram comparados aos resultados de aproveitamento escolar. RESULTADOS: A falha da supressão da otoemissão transiente por estímulo acústico contralateral foi mais encontrada no grupo de crianças com mau aproveitamento escolar. Foi estabelecido um valor de corte de 1.6 dB SPL de redução da otoemissão que caracteriza a criança como pertencente ao grupo com mau aproveitamento com sensibilidade de 65,0%, especificidade de 72,2%, acurácia de 68,4% e valor preditivo positivo de 72,2%. CONCLUSÃO: O teste da falha da inibição contralateral da emissão otoacústica por estímulo auditivo contralateral é preditivo de transtorno do aproveitamento escolar em indivíduos de seis a doze anos de idade.School learning can be hampered if there are defects on the central auditory process. Since those with auditory deficiency can be rehabilitated, it is fundamental that we identify them. Otoacoustic emissions test has low cost and operational ease. Study design: clinical and experimental. AIM: to study the relationship between school learning and transient otoacoustic emission suppression by contralateral stimuli. MATERIAL AND METHODS: 39 individuals, from 7 to 12 years of age were evaluated, 19 (48.7% with good school

  3. Contrapulsación externa aumentada, un tratamiento no invasivo recomendado para la angina refractaria, valoración de la clase funcional y la calidad de vida

    Directory of Open Access Journals (Sweden)

    Fernán Mendoza

    2017-05-01

    Conclusiones: La terapia de contrapulsación externa aumentada, mejora la calidad de vida y la clase funcional de angina y disnea en pacientes con angina refractaria y se convierte en un procedimiento no invasivo seguro y eficaz.

  4. Educación inclusiva y diversidad funcional en la Universidad

    Directory of Open Access Journals (Sweden)

    Ernesto Martín Padilla

    2013-04-01

    Full Text Available Este artículo tiene como fin describir los elementos básicosrequeridos para facilitar una educación inclusiva en la superiorpara las personas con necesidades educativas especiales, desdela perspectiva de la diversidad funcional. A lo largo de estarevisión se identifican los cambios que ha tenido el conceptode discapacidad. Este escrito pone de manifiesto una serie deconclusiones que permiten la formación de modelos prácticosque aborden las distintas dimensiones que sustentan un procesode inclusión social en el ámbito universitario. En tal sentido,en orden de implementar estos cambios, debe promoverseun mayor esfuerzo colaborativo entre los distintos sectoresinvolucrados. Se reconocen también las barreras y dificultadesque deben ser primero superadas para poder implementar estosmodelos inclusivos propuestos en los artículos consultados.El contar con apoyos para las personas con necesidades especialespermitiría un proceso de inclusión donde se mantenganlos niveles de exigencia para la preparación de profesionalescompetentes e idóneos

  5. Razonamiento covariacional en el estudio de funciones cuadráticas

    Directory of Open Access Journals (Sweden)

    Jhony Alexander Villa-Ochoa

    2012-10-01

    Full Text Available En este artículo se usa el marco conceptual de Carlson et al. (2003 para discutir los resultados de un estudio de caso, el cual describe la forma como un estudiante razona covariacionalmente al enfrentarse a situaciones de variación asociadas a funciones cuadráticas. El estudio se ideó para desarrollar una línea convergente de indagación (Yin, 2009, la cual se centró en las descripciones que el estudiante realizaba a medida que abordaba las situaciones diseñadas para el estudio; dichas descripciones fueron trianguladas con las producciones escritas y los elementos teóricos. Desde las acciones que el estudiante evidenció, se pudo observar que el proceso de razonamiento covariacional no es un proceso lineal pero sí recursivo. Así mismo, este estudio de caso pone en evidencia el hecho de que existen estudiantes que pueden aproximarse a una interpretación variacional de las concavidades de una gráfica, sin que ello exija un estudio previo del cálculo diferencial. Del estudio se desprenden algunas implicaciones tanto para el marco conceptual abordado en este estudio como para el diseño de situaciones orientadas al aula de clase.

  6. Envelhecimento funcional e condições de trabalho em servidores forenses

    Directory of Open Access Journals (Sweden)

    Bellusci Silvia Meirelles

    1999-01-01

    Full Text Available OBJETIVO: Avaliar o envelhecimento funcional (capacidade para o trabalho associado às condições de trabalho. MÉTODOS: Responderam ao questionário "Índice de Capacidade para o Trabalho" (ICT, 807 servidores de uma instituição judiciária federal. As condições de trabalho foram analisadas através do método de análise ergonômica do trabalho. RESULTADOS: A maioria das funções estudadas tem predomínio de demandas cognitivas no trabalho. Os diagnósticos mais referidos foram: doenças músculo-esqueléticas (e lesões, neurológicas (incluindo distúrbio emocional, respiratórias, digestivas, dermatológicas e cardiovasculares. Os modelos de análise de regressão logística mostraram que as mulheres, aqueles com maior tempo de trabalho na instituição e os com cargo de auxiliar operacional de serviços diversos têm maiores chances de apresentar ICT baixo ou moderado. CONCLUSÕES: Os resultados ressaltam a necessidade de melhorar as condições de trabalho. Sugere-se a implementação do Serviço Especializado em Engenharia de Segurança e Medicina do Trabalho, como exige a Lei 6.514 de 1977.

  7. CARACTERÍSTICAS ANÁTOMO-FUNCIONAL DEL APARATO RESPIRATORIO DURANTE LA INFANCIA

    Directory of Open Access Journals (Sweden)

    Dr. Carlos A. Asenjo

    2017-01-01

    Full Text Available El sistema o aparato respiratorio, presenta diferencias significativas con el adulto, derivadas principalmente de su inmadurez anatómica y fisiológica. Esto le confiere gran labilidad funcional, tanto mayor cuanto menor es su edad. Como compensación, presenta abundancia e intensidad de síntomas en la falla respiratoria, que hace que las enfermedades respiratorias no pasen inadvertidas y merezcan especial atención, en forma precoz. Como excepción a la regla, los recién nacidos expresan pobremente el compromiso respiratorio. Sin embargo, la aparición de signos como apnea y bradicardia en presencia de hipoxemia, hecho inhabitual en el niño mayor, nos indican que la característica anterior no es permanente ni homogénea, otorgándole una condición única no concordante con la fisiología del organismo adulto. El conocimiento sobre las características anatómicas y funcionales de la vía aérea extra e intratorácica, nos va a permitir identificar precozmente las características fisiopatológicas que nos permitan sospechar una enfermedad en todo paciente pediátrico.

  8. GUÍA DE ENTREVISTA PARA EL ANÁLISIS FUNCIONAL DE CONDUCTAS EN PERSONAS TRANSEXUALES

    Directory of Open Access Journals (Sweden)

    José Miguel Rodríguez Molina

    2013-05-01

    Full Text Available La transexualidad es un fenómeno emergente. Por ello hay pocos instrumentos de evaluación psicológica. El objetivo de este artículo es mostrar a la comunidad de profesionales de la psicología clínica y de la intervención social un instrumento que puede facilitar esta tarea. Se realiza una breve introducción al fenómeno de la transexualidad y la evaluación psicológica en este campo, que casi siempre se centra en el diagnóstico o en otras variables generalmente de personalidad (rasgos de personalidad, depresión, ansiedad,…. Posteriormente se abordan los principales problemas que encuentra una persona transexual durante su proceso. Estos problemas son fuente potencial o real de conflictos psicológicos. Más tarde se describe brevemente la evaluación conductual muy olvidada en esta área. Por último se propone un nuevo instrumento esta la evaluación. El principal resultado es la Guía de Entrevista para el Análisis Funcional de Secuencias Conductuales (AFUSCO. Se concluye con la necesidad de más evaluación conductual en este campo.

  9. Las funciones ejecutivas en la clínica neuropsicológica infantil

    Directory of Open Access Journals (Sweden)

    Vanessa Arán Filippetti

    2013-01-01

    Full Text Available En los últimos años, el estudio de las funciones ejecutivas (FE aso- ciado a diferentes trastornos del neurodesarrollo ha experimentado un notable auge en el ámbito de la neuropsicología infantil. En el presente artículo revisamos los principales modelos teóricos del funcionamiento ejecutivo en niños atendiendo a sus implicancias tanto para la valoración clínica como para la praxis educativa. En relación con sus bases neuroanatómicas se destacan los modelos neu- rofuncionales que ponen el acento en la fluida relación entre la corteza prefrontal (CPF y las FE así como en la riqueza de conexiones entre la CPF y diferentes regiones corticales y estructuras subcorticales. Finalmen- te, examinamos los perfiles de funcionamiento ejecutivo en diferentes trastornos de la clínica neuropsicológica infantil. La integración de estos aportes permite comprender la heterogeneidad del déficit ejecutivo en trastornos infantiles que no necesariamente cursan con patología primaria de los lóbulos frontales.

  10. Funciones ejecutivas en niños escolarizados: efectos de la edad y del estrato socioeconómico

    Directory of Open Access Journals (Sweden)

    Vanessa Arán Filippetti

    2011-01-01

    Full Text Available En los últimos años, se ha incrementado notoriamenteel estudio sobre las funciones ejecutivasprefrontales en niños de edad escolar. El objetivodel presente estudio es analizar la influencia dela edad y del estrato socioeconómico (ESE en eldesempeño de tareas ejecutivas y conocer cuálesson las variables socioeconómicas que predicenuna mejor ejecución. Participaron 254 niños de 7a 12 años de edad de diferentes estratos socioeconómicosde la ciudad de Santa Fe, Argentina. Seutilizó una batería de pruebas ejecutivas sensiblesa la función prefrontal. Los resultados obtenidosseñalan un efecto significativo de la edad y delESE sobre las funciones ejecutivas estudiadas.Los diferentes dominios del constructo siguen unatrayectoria diferente según el desarrollo y el efectodel ESE. Además, en todas las funciones ejecutivasse evidencia un patrón de funcionamiento cognitivoinferior en los niños de estrato socioeconómico bajo(ESB. Finalmente, se encontró que, de las variablesincluidas en el análisis, solo el nivel educativode la madre y las condiciones de alojamiento de lafamilia se asocian al funcionamiento ejecutivo delos niños. Se discuten los resultados en funciónde la influencia que ejerce la maduración cerebraly las variables ambientales en el funcionamientoejecutivo.

  11. Revisión bibliográfica sobre funciones objetivo para el apilamiento de contenedores

    Directory of Open Access Journals (Sweden)

    Laidy De Armas Jacomino

    2017-05-01

    Full Text Available Una terminal de contenedores es una fuente de disímiles problemas de índole matemática y por ende computacional. En particular el apilamiento de contenedores en el patio de una terminal marítima es una de las operaciones más importantes, debido fundamentalmente, a los cuellos de botella que en él surgen, con los respectivos incumplimientos de los indicadores de eficiencia. El apilamiento de contenedores se divide en actividades de carga, descarga y recolocación o premarshalling de contenedores. Cuando se realizan estas actividades los operarios y directivos deben determinar las posiciones exactas para los contenedores, descargarlos o recolocarlos haciendo un uso eficiente del espacio de almacenamiento disponible, reduciendo los movimientos improductivos y los costos de transportación, etc. El propósito del presente trabajo es revisar y describir funciones objetivo encontradas en la literatura sobre problemas de optimización que surgen durante el apilamiento de contenedores. Las funciones objetivo analizadas están agrupadas en dos clases fundamentales: minimizar movimientos improductivos de las grúas de patio y minimizar costo de transportación de los contenedores durante el apilamiento. Según el conocimiento de los autores no se encuentra disponible en la literatura revisada una clasificación atendiendo a la modelación matemática de las funciones objetivo similar a la propuesta.

  12. Correlatos anatômico-funcionais das emoções mapeados com técnicas de neuroimagem funcional

    Directory of Open Access Journals (Sweden)

    Geraldo Busatto

    2006-01-01

    Full Text Available Nos dias de hoje, o uso de técnicas de neuroimagem funcional permite investigações detalhadas dos circuitos cerebrais engajados durante o desempenho de paradigmas de estimulação que envolvem diferentes aspectos do processamento emocional em seres humanos saudáveis. Este artigo discute os princípios básicos dos métodos mais comumente usados em estudos de neuroimagem funcional das emoções, faz uma revisão seletiva de achados recentes obtidos nestes estudos, fornece exemplos de novos paradigmas usados atualmente neste tipo de investigação, e descreve modelos neuroanatômicos recentes para o processamento emocional formulados a partir dos achados da literatura contemporânea de neuroimagem. Por fim, enfatizamos o potencial das técnicas de neuroimagem funcional para ampliar o conhecimento a respeito da ação modulatória dos medicamentos usados para tratar condições mentais que alteram processos emocionais específicos, tais como a depressão e os transtornos de ansiedade.

  13. Condición física y capacidad funcional en el paciente críticamente enfermo: efectos de las modalidades cinéticas

    OpenAIRE

    MONDRAGÓN-BARRERA, MÓNICA ALEJANDRA

    2013-01-01

    Introducción: la inmovilización prolongada a la que se ve sometido el paciente críticamente enfermo contribuye al desacondicionamiento físico y la dependencia funcional. Debido a esto se han desarrollado modalidades de intervención fisioterapéutica que pretenden contrarrestar dicho estado y sus consecuencias. Objetivo: determinar los efectos de los movimientos pasivos, asistidos, activos y resistidos, sobre la fuerza muscular, movilidad articular y capacidad funcional en pacientes internados ...

  14. Effects of aging on the structural, mechanical, and thermal properties of the silicone rubber current transformer insulation bushing for a 500 kV substation.

    Science.gov (United States)

    Wang, Zhigao; Zhang, Xinghai; Wang, Fangqiang; Lan, Xinsheng; Zhou, Yiqian

    2016-01-01

    In order to analyze the cracking and aging reason of the silicone rubber current transformer (CT) insulation bushing used for 8 years from a 500 kV alternating current substation, characteristics including Fourier transform infrared (FTIR) spectroscopy, mechanical properties analysis, hardness, and thermo gravimetric analysis have been carried out. The FTIR results indicated that the external surface of the silicone rubber CT insulation bushing suffered from more serious aging than the internal part, fracture of side chain Si-C bond was much more than the backbone. Mechanical properties and thermal stability results illustrated that the main aging reasons were the breakage of side chain Si-C bond and the excessive cross-linking reaction of the backbone. This study can provide valuable basis for evaluating degradation mechanism and aging state of the silicone rubber insulation bushing in electric power field.

  15. Management functions for a distributed system applied in power plants and substations automation; Funcoes de gerenciamento para um sistema distribuido aplicado na automacao de usinas e subestacoes

    Energy Technology Data Exchange (ETDEWEB)

    Lemos, Rogerio Sergio Neves de

    1988-04-01

    This work presents the management functions for a distributed computer control system, which has been developed at Centro de Pesquisas de Energia Eletrica - CEPEL with the aim to automate hydroelectric power plants and extra high voltage power substations. The initial specifications developed are based on a architecture without redundancies which initially has the objective to get the effective knowledge of the system's behaviour. In the first part is given an introduction of dependability, with two aims: to present the basic concepts and terminology, and, to present a set of techniques in the area of computing systems fault tolerance. In control system is introduced, in terms of its architecture and functionality. The third part introduces the management activities for the distributed system are introduced together with a general model. Finally, the fault diagnosis in the distributed system is discussed, where is presented a new diagnosis algorithm. (author)

  16. Long-term exposure to electrical fields: a cross-sectional epidemiologic investigation of occupationally exposed workers in high-voltage substations

    Energy Technology Data Exchange (ETDEWEB)

    Knave, B

    1979-07-01

    The aim of the study was to investigate the possibility of persistent, chronic health effects in the exposed group as a consequence of exposure. The investigation included the nervous sytem, cardiovascular system and the blood. Fertility was also assessed. The results showed no differences between the exposed and reference groups as a consequence of the long-term exposure. The groups differed, however, in that the exposed group had (a) consistently better results on the psychological performance tests, (b) fewer children, especially boys, and (c) somewhat higher education. The differences in test results were due to the higher education among the exposed. The difference in number of children was also thought to be related to factors other than exposure since the difference in number of children was found to be present already 10 to 15 years before the work in 400 kV substations began. 35 references.

  17. Management functions for a distributed system applied in power plants and substations automation; Funcoes de gerenciamento para um sistema distribuido aplicado na automacao de usinas e subestacoes

    Energy Technology Data Exchange (ETDEWEB)

    Lemos, Rogerio Sergio Neves de

    1988-04-01

    This work presents the management functions for a distributed computer control system, which has been developed at Centro de Pesquisas de Energia Eletrica - CEPEL with the aim to automate hydroelectric power plants and extra high voltage power substations. The initial specifications developed are based on a architecture without redundancies which initially has the objective to get the effective knowledge of the system's behaviour. In the first part is given an introduction of dependability, with two aims: to present the basic concepts and terminology, and, to present a set of techniques in the area of computing systems fault tolerance. In control system is introduced, in terms of its architecture and functionality. The third part introduces the management activities for the distributed system are introduced together with a general model. Finally, the fault diagnosis in the distributed system is discussed, where is presented a new diagnosis algorithm. (author)

  18. Two-dimensional vibrational spectroscopy of the amide I band of crystalline acetanilide: Fermi resonance, conformational substates, or vibrational self-trapping?

    Science.gov (United States)

    Edler, J.; Hamm, P.

    2003-08-01

    Two-dimensional infrared (2D-IR) spectroscopy is applied to investigate acetanilide, a molecular crystal consisting of quasi-one-dimensional hydrogen bonded peptide units. The amide-I band exhibits a double peak structure, which has been attributed to different mechanisms including vibrational self-trapping, a Fermi resonance, or the existence of two conformational substates. The 2D-IR spectrum of crystalline acetanilide is compared with that of two different molecular systems: (i) benzoylchloride, which exhibits a strong symmetric Fermi resonance and (ii) N-methylacetamide dissolved in methanol which occurs in two spectroscopically distinguishable conformations. Both 2D-IR spectra differ significantly from that of crystalline acetanilide, proving that these two alternative mechanisms cannot account for the anomalous spectroscopy of crystalline acetanilide. On the other hand, vibrational self-trapping of the amide-I band can naturally explain the 2D-IR response.

  19. Numerical modelling and experimental measurements for a low-temperature district heating substation for instantaneous preparation of DHW with respect to service pipes

    DEFF Research Database (Denmark)

    Brand, Marek; Thorsen, Jan Eric; Svendsen, Svend

    2012-01-01

    Traditional district heating (DH) systems are becoming uneconomic as the number of new and renovated buildings with reduced heating requirements increases. To keep DH competitive in the future, heat losses in DH networks need to be reduced. One option is to reduce the supply temperature of DH...... as much as possible. This requires a review and improvement of a DH network, in-house substations, and the whole domestic hot water (DHW) supply system, with the focus on user comfort, hygiene, overall cost and energy efficiency. This paper describes some practical approaches to the implementation of low...... concept as well for individual components. The results show that the way that the service pipe is operated has a significant effect on waiting time for DHW, heat loss, and overall cost. Furthermore, the service pipe should be kept warm by using a bypass in order to fulfil the comfort requirements for DHW...

  20. Suppression of the high-frequency disturbances in low-voltage circuits caused by disconnector operation in high-voltage open-air substations

    Energy Technology Data Exchange (ETDEWEB)

    Savic, M.S.

    1986-07-01

    The switching off and on of small capacitive currents charging busbar capacitances, connection conductors and open circuit breakers with disconnectors causes high-frequency transients in high-voltage networks. In low voltage circuits, these transient processes induce dangerous overvoltages for the electronic equipment in the substation. A modified construction of the disconnector with a damping resistor was investigated. Digital simulation of the transient process in a high-voltage network during the arcing period between the disconnector contacts with and without damping resistor were performed. A significant decrease of the arcing duration and the decrease of the electromagnetic field magnitude in the vicinity of the operating disconnector were noticed. In the low voltage circuit protected with the surge arrester, the overvoltage magnitude was not affected by the damping resistor due to the arrester protection effect.

  1. Aspectos conceituais e fatores associados ao Letramento Funcional em Saúde: revisão de literatura

    Directory of Open Access Journals (Sweden)

    Poliana Cristina Rocha

    2016-02-01

    Full Text Available RESUMO O objetivo deste estudo é revisar as produções científicas acerca da avaliação do letramento funcional em saúde em associação com a qualidade de vida; e analisar metodologicamente os estudos observacionais sobre a temática. Trata-se de revisão integrativa de literatura produzida com base em artigos relacionados aos seguintes eixos temáticos: letramento funcional em saúde e qualidade de vida, com busca realizada nas bases de dados PubMed, Lilacs, Biblioteca Virtual em Saúde. Após a aplicação dos critérios de inclusão obteve-se 538 artigos e após a aplicação dos critérios de exclusão foram selecionados 11 artigos sendo nove estudos internacionais e dois nacionais. A revisão constou de compilação e construção de linha histórica das publicações, análise metodológica dos estudos observacionais e elaboração de nuvem de textos. A maior parte dos artigos tem análise quantitativa; público alvo adultos e idosos e medem o nível de letramento funcional em saúde. Os estudos verificaram relação positiva do letramento funcional em saúde com a baixa escolaridade, idade mais avançada, sexo masculino e baixa renda. Os principais cenários foram ambientes assistenciais. O letramento funcional em saúde apresentou associação com variáveis sócio-demográficas como sexo, idade e escolaridade. A maior parte dos estudos encontrados na busca teve como objetivo relacionar o letramento a patologias e foi realizado em ambientes clínicos (ambulatórios e hospitais. Dos oito artigos observacionais incluídos na presente revisão atenderam totalmente aos critérios metodológicos para elaboração desse tipo de estudo.

  2. Occupational exposure to electric fields and induced currents associated with 400 kV substation tasks from different service platforms.

    Science.gov (United States)

    Korpinen, Leena H; Elovaara, Jarmo A; Kuisti, Harri A

    2011-01-01

    The aim of the study was to investigate the occupational exposure to electric fields, average current densities, and average total contact currents at 400 kV substation tasks from different service platforms (main transformer inspection, maintenance of operating device of disconnector, maintenance of operating device of circuit breaker). The average values are calculated over measured periods (about 2.5 min). In many work tasks, the maximum electric field strengths exceeded the action values proposed in the EU Directive 2004/40/EC, but the average electric fields (0.2-24.5 kV/m) were at least 40% lower than the maximum values. The average current densities were 0.1-2.3 mA/m² and the average total contact currents 2.0-143.2 µA, that is, clearly less than the limit values of the EU Directive. The average values of the currents in head and contact currents were 16-68% lower than the maximum values when we compared the average value from all cases in the same substation. In the future it is important to pay attention to the fact that the action and limit values of the EU Directive differ significantly. It is also important to take into account that generally, the workers' exposure to the electric fields, current densities, and total contact currents are obviously lower if we use the average values from a certain measured time period (e.g., 2.5 min) than in the case where exposure is defined with only the help of the maximum values. © 2010 Wiley-Liss, Inc.

  3. Autonomia funcional de idosas praticantes de Pilates Functional autonomy of elderly women practicing Pilates

    Directory of Open Access Journals (Sweden)

    Brena Guedes de Siqueira Rodrigues

    2010-12-01

    Full Text Available O objetivo foi avaliar o efeito do método Pilates na autonomia funcional de idosas. Foram selecionadas 52 voluntárias, submetidas à avaliação geral e ao protocolo de avaliação da autonomia funcional do Grupo Latino-Americano de Desenvolvimento para Maturidade (GDLAM, que consiste em cinco testes (caminhada de 10 m, levantar-se da posição sentada, levantar-se da cadeira e locomover-se pela casa, levantar-se da posição de decúbito ventral e vestire tirar uma camiseta; em seguida, foram divididas em dois grupos: grupo Pilates (GP, n=27; idade 66,9±5,3 anos e grupo controle (GC, n=25; idade 65,2±3,9 anos. O GP foi submetido a uma série de dez exercícios de Pilates, por oito semanas, duas vezes por semana. Os dois grupos foram reavaliados após esse período. O nível de significância considerado foi de p?0,05. O GP obteve resultados significativamente melhores em todos os testes e no índice geral do GDLAM (p=0,035 após a intervenção. O GC obteve escore significativamente melhor (p=0,042 apenas no teste de caminhada de 10 m, tendo mantido sua classificação inicial de funcionalidade regular. Comparando-se os escores dos grupos após a intervenção, encontraram-se diferenças significativas em favor do GP, inclusive no índice GDLAM (pThe purpose of the study was to assess the effect of the Pilates method on elderly women's functional autonomy. Fifty-two volunteers were submitted to the evaluation protocol of the Latin-American Group for Maturity Development (GDLAM, which consists of five tests: a 10-meter walk, get up from the sitting and lying down positions, get up and walk around at home, and to put on and take off a t-shirt. They were then divided into Pilates group (PG, n=27, mean age 66.9±5.3 years and control group (CG, n=25, mean age 65.2±3.9 years old. PG underwent a series of 10 Pilates exercises twice-weekly for eight weeks, both groups being reassessed thereafter. The level of significance was set at p?0

  4. DINÁMICA FAMILIAR, ENVEJECIMIENTO Y DETERIORO FUNCIONAL EN MÉXICO 1

    Directory of Open Access Journals (Sweden)

    Verónica Montes de Oca

    2010-01-01

    Full Text Available 1.Documento preparado para la II Conferencia intergubernamental sobre envejecimiento, Brasilia, Brasil, 4-6 de diciembre del 2007. El presente documento se inscribe en la discusión sobre las transformaciones que han experimentado las familias en México en el siglo XX, y como se asoman algunas dinámicas al interior que son resultado del alargamiento en la esperanza de vida individual y de la presencia de limitaciones funcionales en los miembros en edad avanzada. Se reflexiona sobre los cambios sociales y demográficos en los hogares, las estrategias de apoyo y cuidado hacia las personas adultas mayores con presencia de enfermedades y limitaciones funcionales a partir de cálculos realizados con base en la Encuesta Nacional sobre Salud y Envejecimiento (2001. Si bien hay un esfuerzo de las instituciones de salud y de los arreglos familiares para atender esta situación, este artículo permite mostrar la fuerza y debilidad del sistema de protección social en la procuración de cuidados y apoyos hacia las personas en la vejez con limitaciones funcionales. Presenta algunos retos y áreas de acción relevantes para las instituciones gubernamentales y no gubernamentales. La idea que se propone, con base en este análisis, es reaccionar activamente entre instituciones, familias y sociedad para apoyar a la vejez que experimenta el deterioro progresivo de sus facultades físicas y mentales. Palabras-claves: dinámica familiar; vejez; deterioro funcional.

  5. Dor neuropática central após lesão medular traumática: capacidade funcional e aspectos sociais Dolor neuropático central después de lesión medular traumática: capacidad funcional y aspectos sociales Central neuropathic pain after traumatic spinal cord injury: functional capacity and social aspects

    OpenAIRE

    Janaina Vall; Violante Augusta Batista Braga

    2005-01-01

    Estudo de caso comparativo com o objetivo de avaliar a capacidade funcional e os aspectos sociais de dois pacientes, ambos com lesão medular traumática, sem e com dor neuropática central associada, respectivamente. Para avaliar a capacidade funcional, foi utilizado como instrumento o Functional Independence Measure ou Escala de Independência Funcional. E para avaliar os aspectos sociais foi construído o ecomapa de cada paciente, preconizado pelo modelo Calgary de avaliação de famílias. Ambos ...

  6. Percepción del apoyo social funcional en cuidadores familiares de enfermos crónicos

    Directory of Open Access Journals (Sweden)

    Olga Marina Vega-Angarita

    2011-01-01

    Full Text Available Objetivo: describir la percepción del apoyo social funcional en cuidadores familiares de enfermos crónicos en San José de Cúcuta, Colombia. Método: estudio cuantitativo, descriptivo de corte transversal, con aplicación de dos instrumentos: caracterización de los cuidadores y el Cuestionario de Apoyo Social Funcional de Duke-Unc. Participaron 179 cuidadores de personas con enfermedades crónicas, no institucionalizados. Resultados: la mayoría de los cuidadores (54,7% tienen una percepción inadecuada frente al apoyo social funcional global brindado por su entorno más cercano; el 45,3% expresa lo contrario. Sobre la dimensión del apoyo confidencial el mayor porcentaje de los participantes (53,6% tiene una percepción inad cuada, mientras que el 46,4% considera que es la mejor; con un comportamiento similar en la dimensión afectiva se encontró que el 51,4% de los cuidadores tiene una percepción inadecuada, y el 48,6% la describen como adecuada. Conclusiones: los resultados reportados en las dimensiones sugieren la necesidad de que enfermería fortalezca la integración de los cuidadores en los sistemas formales e informales para que, a través de ellos, los sujetos perciban mayor apoyo de su ambiente social, facilitando así los procesos de afrontamiento y adaptación a las demandas que le plantea su nueva realidad.

  7. FUNCIONES EJECUTIVAS Y HABILIDAD DE REEVALUACIÓN COGNITIVA: EVIDENCIA DE SU RELACIÓN EN NIÑOS

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    Maria Laura Andres

    2016-01-01

    Full Text Available La habilidad de reevaluación cognitiva (HRC es una estrategia de regulación emocional que implica resignificar un evento para cambiar su impacto emocional. En los niños esta habilidad permite disminuir experiencias emocionales negativas y se ha mostrado como un factor de protección frente a la ansiedad y depresión. Sin embargo, aún restan conocer los factores que contribuyen a explicar las diferencias individuales en esta habilidad. Uno de estos factores son las funciones ejecutivas ya que contribuyen al control cognitivo de la emoción. El objetivo de este trabajo fue analizar el rol de las funciones ejecutivas en la HRC. Se evaluaron 100 niños de 9 a 12 años de edad (M=10,49; DS=1,10 en memoria de trabajo, flexibilidad cognitiva espontánea, inhibición y HRC mediante la Tarea de Amplitud Oral (Batería AWMA, prueba de Fluidez Verbal Semántica (Batería ENI y la Tarea de Identificación de Reevaluaciones Cognitivas TIRC elaborada para este estudio. Los datos se analizaron mediante regresión lineal múltiple. Los resultados mostraron que las funciones ejecutivas predecían la HRC, es decir, los niños que tuvieron mejor desempeño en funcionamiento ejecutivo mostraron mayor HRC. Se espera que estos resultados permitan profundizar el conocimiento de los procesos implicados en el control cognitivo de la emoción.

  8. Police Stations, City of Wichita Police Department substation locations. Cover is derived from Emergency Facilities (scEfac) cover. Used for Public Safety map rolls. Primary attributes include station number, address, mailing city, type, and name., Published in 2008, 1:1200 (1in=100ft) scale, Sedgwick County Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Police Stations dataset current as of 2008. City of Wichita Police Department substation locations. Cover is derived from Emergency Facilities (scEfac) cover. Used...

  9. Efeito da peletização e adição de enzimas e vitaminas sobre o desempenho e aproveitamento da energia e nutrientes em frangos de corte de 1 a 21 dias de idade Effect of pelleting and addition of enzymes and vitamins on the performance and advantage of energy and nutrients in broiler chickens from 1 to 21 days old

    OpenAIRE

    José Laureano Barbosa Leite; Paulo Borges Rodrigues; Elias Tadeu Fialho; Rilke Tadeu Fonseca de Freitas; Adriano Kaneo Nagata; Vinícius de Souza Cantarelli

    2008-01-01

    Conduziu-se este experimento para avaliar o efeito da peletização e adição de enzimas e vitaminas sobre o desempenho e aproveitamento da energia e nutrientes, em frangos de corte de 1 a 21 dias de idade. Foram utilizados 350 pintos de corte, COBB, machos, com peso inicial médio de 47g ± 2,5g, em um delineamento inteiramente casualizado, com os tratamentos em arranjos fatorial 3 x 2 (três dietas, com e sem enzimas) sendo que as dietas consistiram de uma ração farelada e duas rações peletizadas...

  10. Efectos del fMLP y de los antioxidantes sobre funciones inducidas por lipopolisacáridos bacterianos

    OpenAIRE

    Vulcano, Marisa

    1997-01-01

    En el presente tabajo de Tesis se evaluaron las consecuencias de las interacciones de los lipopolisacáridos (LPS) y de los péptidos formilados de las bacterias Gram negativas sobre la activación de distintas funciones celulares involucradas en el desencadenamiento de la respuesta inflamatoria a la infección. En particular, se analizaron los efectos de estos dos componentes bacterianos sobre la activación del estallido respiratorio y la producción de TNF-α en células fagocíticas humanas. Los r...

  11. El cuidado en la teoría del reconocimiento de Honneth. Repercusiones en las personas con diversidad funcional

    Directory of Open Access Journals (Sweden)

    Manuel Aparicio Payá

    2016-05-01

    Full Text Available En la teoría de la justicia como reconocimiento de Honneth  encontramos una conexión entre cuidado y justicia. En este artículo abordamos dicha conexión y estudiamos las repercusiones que tiene en las personas con diversidad funcional. Mientras Honneth limita el reconocimiento afectivo al campo de las relaciones primarias, en este trabajo defendemos una ampliación de su radio de acción, incluyendo también al voluntariado y a las profesiones de asistencia.

  12. Aplicación del Aprendizaje Basado en Problemas para el estudio de Funciones Reales de Variables Reales

    OpenAIRE

    Varela Lezeta, María Concepción

    2011-01-01

    Duración (en horas): De 21 a 30 horas. Nivel educativo: Grado Se presenta una aplicación de la metodología ABP para el estudio de las funciones reales de dos o mas variables reales. A través de una serie de actividades se guía al alumnado a la comprensión del indicador de aprendizaje que quiera trabajar. Es necesario tener claros los conceptos que se trabajan (continuidad, derivabilidad) para función real de una variables real.

  13. Evaluación de la capacidad antioxidante por el Método Frap de un posible alimento funcional

    OpenAIRE

    Gomero Ostos, Néstor

    2013-01-01

    El presente trabajo tiene como objetivo determinar si la incorporación de brócoli deshidratado en la formulación de un producto de panificación le permite mostrar a esta última capacidad antioxidante de tal manera que le pueda considerar como un alimento funcional. Existen evidencias epidemiológicas de una asociación inversa entre :consumo de brócoli, otras crucíferas (col; coliflor y col bruselas) y riesgo de cáncer, las propiedades anticancerígenas de estos vegetales se han atribuido a ...

  14. Nuevos procesos tándem iniciados por transferencias de hidruro desde funciones acetálicas

    OpenAIRE

    Marín Luna, Marta

    2014-01-01

    Objetivos: Estudiar la capacidad de funciones acetálicas tales como 1,3-dioxolano, 1,3-ditiolano y sus análogas de seis miembros, para participar en procesos tándem iniciados por una transferencia de hidruro. Se evaluarán como unidades receptoras potenciales de dicho anión agrupaciones cetena, cetenimina, aleno, fulveno y fragmentos benciliden malonato. Metodología: 1) Diseñar y sintetizar acetal compuestos aptos para experimentar dichos procesos tándem. 2) Estudiar su reactividad química med...

  15. Sexo y diversidad funcional ¿Un tabú que se desmorona? La figura del asistente sexual

    OpenAIRE

    Ledesma Laguna, Paula

    2017-01-01

    A lo largo de los años, incluso aún en la actualidad, la sociedad asocia una serie de mitos y creencias a las personas con diversidad funcional, y más aún a la sexualidad de las mismas. Esto provoca un concepto erróneo sobre dicha dimensión, produciendo un efecto negativo, perjudicial y estigmatizador para este colectivo. La sexualidad se encuentra en la normativa como un derecho a la intimidad y al propio cuerpo, pero en la realidad, no sucede así. En este trabajo se hace un recorrido desde ...

  16. Estima de error residual explícita para cantidades de interés utilizando funciones burbuja

    OpenAIRE

    Rosales, R.; Díez, P.

    2009-01-01

    En este trabajo se introduce un nuevo estimador de error residual explícito a posteriori para problemas elípticos orientado a cantidades de interés. Se propone utilizar funciones burbuja sobre elementos y sobre aristas. Se parte de la solución de elementos finitos del problema primal y de la de un problema junto (o dual), asociado a una cantidad de interés definida por el usuario. Por ejemplo, la variación de temperatura o el desplazamiento de un punto del dominio. La estima se calcula en...

  17. CARACTERIZAÇÃO FÍSICO-QUÍMICA, FUNCIONAL E NUTRICIONAL DE DUAS CULTIVARES BRASILEIRAS DE ARROZ

    OpenAIRE

    Polesi, Luis Fernando; Lima, Dâmaris Carvalho; Morais, Pyera Grassi; Romo, Isabela Cristina Freitas; Sarmento, Silene Bruder Silveira; Canniatti-Brazaca, Solange Guidolin

    2014-01-01

    O objetivo deste trabalho foi realizar a caracterização físico-química, funcional e nutricional de duas cultivares brasileiras de arroz. O arroz da cultivar IAC 202 apresentou maior temperatura de gelatinização, absorção de água, volume de expansão, perda de sólidos, pegajosidade e amido lentamente digerível. O arroz da cultivar IRGA 417 apresentou maior teor de proteínas, lipídeos, amilose aparente, viscosidade em RVA, dureza, amido rapidamente digerível e amido resistente. O arroz IRGA 417 ...

  18. El Proceso Terapéutico "Momento a Momento" desde una Perspectiva Analítico-Funcional

    OpenAIRE

    Montserrat Montaño-Fidalgo; María Xesús Froján-Parga; Elena María Ruiz-Sancho; Francisco Javier Virués-Ortega

    2011-01-01

    Este trabajo describe cómo se desarrolla el proceso terapéutico en un caso concreto mediante el estudio de las posibles funciones de la conducta verbal del terapeuta durante la interacción con su cliente. Para ello, se procedió a la observación de las grabaciones de las 10 sesiones que constituyeron la totalidad de la intervención terapéutica del caso estudiado. La categorización del comportamiento verbal del psicólogo en sesión fue realizada mediante el software The Observer® XT y la aplicac...

  19. INDICIOS DEL PAPEL PREPONDERANTE DEL ÁLGEBRA EN LA EMERGENCIA DE LAS FUNCIONES ELÍPTICAS

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    LEONARDO SOLANILLA

    2013-07-01

    Full Text Available En el transcurso de un estudio sobre la emergencia del concepto de función elíptica en el siglo XIX hemos descubierto con sorpresa que el papel del Álgebra habría sido tanto, o quizás más importante, que el del mismo cálculo de las funciones complejas para el desenvolvimiento histórico de este campo de las Matemáticas. Para defender esta afirmación presentamos dos análisis. Uno de ellos se basa en las Recherches de Abel, el otro en los Fundamenta nova de Jacobi.

  20. Avaliação funcional de relatos de disfunção erétil.

    OpenAIRE

    Domingos, Vania Gomes Machado

    2014-01-01

    O presente estudo teve como objetivo analisar funcionalmente o comportamento verbal de uma pessoa diagnosticado com disfunção erétil. O participante, do sexo masculino de 37anos é casado. Para o controle dos procedimentos foram empregados dois delineamentos experimentais: o de múltiplos elementos e o de tratamentos alternados. Para avaliar os antecedentes e consequentes dos relatos de disfunção erétil, foi usado processo de avaliação funcional que incluiu (1) observação indiret...

  1. Funciones agua rendimiento para 14 cultivos agrícolas en condiciones del sur de La Habana

    OpenAIRE

    González Robaina, Felicita; Herrera Puebla, Julián; López Seijas, Teresa; Cid Lazo, Greco

    2013-01-01

    El estudio de las funciones agua rendimiento y su uso dentro de la planificación del uso del agua es una vía importante para trazar estrategias de manejo que contribuyan al incremento en la producción agrícola. Utilizando los datos de consumo de agua, agua aplicada por riego, precipitaciones y los rendimientos obtenidos en más de 100 experimentos de campo realizados fundamentalmente en suelo Ferralítico Rojo de la zona sur de La Habana y con ayuda de herramientas de análisis de regresión en e...

  2. Estudio de viabilidad de reducción de tiempo de test funcional en bombas de inyección

    OpenAIRE

    Ventayol Femenias, Juan L.

    2011-01-01

    En este proyecto se aborda la viabilidad de reducir el tiempo de ciclo de un test funcional al final de una línea de producción utilizado para comprobar el correcto funcionamiento de bombas de inyección de combustible. Para ello se utilizan herramientas estadísticas y más concretamente estudios de capacidad. Además también se encontrarán otras herramientas estadísticas debido a problemas con la distribución de los datos utilizados. En el aspecto puramente técnico se verá que se...

  3. Estudio de las funciones cognitivas en niños víctimas de violencia intrafamiliar

    OpenAIRE

    Cobos Cali, Martha Esperanza

    2016-01-01

    [ES] Desde el siglo anterior y las décadas del nuevo milenio, la violencia se ha declarado un grave problema de salud pública a nivel mundial. En Ecuador, según el Sistema Nacional de Información (2013), existe un total de 4.553 niños en casas de acogida, en cuyas instituciones la evaluación y rehabilitación neuropsicológica no se contempla. Por ello, es prioritario estudiar y analizar las funciones cognitivas en niños de 5 a 12 años víctimas de Violencia Intrafamiliar (NVVI). La base metodol...

  4. Derechos de las personas con diversidad funcional y su inclusión social: actualización legal

    OpenAIRE

    Martínez Agut, María del Pilar

    2014-01-01

    La legislación en materia de los derechos de las personas con diversidad funcional y su inclusión social, ha estado dispersa desde 1982 con la Ley de integración social de las personas con discapacidad (LISMI, Ley 13/1982), junto con la Ley 51/2003 de igualdad de oportunidades, no discriminación y accesibilidad universal de las personas con discapacidad y la Ley 49/2007, por la que se establece el régimen de infracciones y sanciones en materia de igualdad de oportunidades, no discriminación y...

  5. La motivación en los voluntarios: Una aplicación del inventario de funciones al caso Colombia

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    Giovanni Pérez Ortega

    2012-01-01

    Full Text Available Este artículo, basado en “El inventario de funciones del Voluntariado –IFV-”, determina cuáles son las variables que motivan a los voluntarios en Colombia, a desarrollar las actividades relacionadas con el voluntariado. Se consideraron seis dimensiones (valores, carrera, social, comprensión, protección y mejora. El análisis de los resultados muestra que los voluntarios en Colombia se motivan principalmente porque pueden trabajar por una causa que es importante para ellos y porque pueden ayudar a los menos afortunados; variables pertenecientes a la dimensión de valores.

  6. Funciones ejecutivas en niños con trastorno del lenguaje: algunos antecedentes desde la neuropsicología

    OpenAIRE

    Nancy Lepe-Martínez; Claudia P. Pérez-Salas; Cristian A. Rojas-Barahona; Carlos Ramos-Galarza

    2018-01-01

    El trastorno del lenguaje es un problema de la comunicación con alta incidencia y prevalencia en la población escolar, el cual afecta negativamente el desempeño académico, y el desarrollo social y afectivo de los niños que lo padecen. Existe evidencia de que en este trastorno se encuentran afectadas funciones ejecutivas (fe), además de los componentes del lenguaje (fonológico, morfosintáctico, semántico y pragmático), los cuales se han estudiado tradicionalmente. Este ...

  7. Dinámica neuronal del circuito motor: un estudio de resonancia magnética funcional

    Directory of Open Access Journals (Sweden)

    Maylen Carballo Barreda

    2012-06-01

    Full Text Available Normal 0 21 false false false ES X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} La modelación de redes neuronales que describan la interacción funcional del circuito cerebral formado por los ganglios basales (GB, el tálamo y la corteza está limitada por las simplificaciones necesarias para reproducir sus propiedades biológicas.  Este trabajo tiene como objetivo general modelar el circuito GB-tálamo-corteza para la selección de un programa motor, sobre la base del patrón de conectividad funcional obtenido por imágenes de resonancia magnética nuclear funcional (RMNf.  Se incluyeron cinco poblaciones neuronales y dos circuitos paralelos en competencia. La determinación de los pesos de las conexiones entre las poblaciones neuronales a partir de imágenes de RMNf, contribuyó a una formulación más realista del modelo, permitiendo describir la participación de los GB en la selección de una acción en estado normal y en la enfermedad de Parkinson (EP. La simulación permitió demostrar que ante una pérdida de dopamina superior al 40%, el circuito GB-tálamo-cortical no es capaz de seleccionar entre dos programas motores; y además reflejó la capacidad de adaptación del sistema para compensar el trastorno funcional del circuito motor en la EP

  8. Biomecánica del vendaje funcional preventivo de tobillo en deportes de colaboración-oposición

    OpenAIRE

    Meana Riera, Marta

    2004-01-01

    La aplicación del vendaje funcional de tobillo como método preventivo de los esguinces, durante los entrenamientos y las competiciones, está muy extendida en la práctica diaria, sobre todo en fútbol, baloncesto, balonmano y voleibol. En el estudio, que abre nuevas líneas de investigación en las patologías del pie del deportista, se realiza un profundo análisis de la eficacia de estos vendajes sanos y de sus efectos sobre el rendimiento deportivo y la biomecánica del tobillo. Actividad Físi...

  9. Prevalência de dor cervical e incapacidade funcional na Escola Superior de Tecnologia da Saúde do Porto

    OpenAIRE

    Marques, André; Mesquita, Cristina

    2010-01-01

    A dor cervical é cada vez mais um problema comum e incapacitante nos países industrializados. O objectivo do estudo foi determinar a prevalência de dor cervical nos últimos seis meses, intensidade da dor e incapacidade funcional em indivíduos com dor cervical. O estudo do tipo observacional, descritivo e transversal. Amostra constituída por alunos, docentes, administrativos e auxiliares da ESTSP (n=285). Os instrumentos utilizados foram: questionário de caracterização da amostra, escala visua...

  10. Hacia las unidades de bibliometría en las universidades: modelo y funciones

    Directory of Open Access Journals (Sweden)

    Jiménez-Contreras, Evaristo

    2012-09-01

    Full Text Available In recent years, bibliometric indicators have been firmly established as a tool for research management and decision-making in the context of scientific policy. Spanish universities represent one sector that has seen signifi cant growth in the use of indicators. These institutions now find themselves in an ever more competitive environment and therefore have a greater need to have knowledge of the performance of their researchers. Against this background, this paper presents a proposal for the creation of Bibliometric Units in Spanish universities and attempts specifically to illustrate both the model and functions of these units based on three pillars: control of information sources related to research, preparing reports, and advice/training. In addition to the theoretical proposal we present different examples from the universities of Navarra and Granada. The text concludes that such units could represent an important opportunity for jobs in the fi eld of Information Science.

    En los últimos años la bibliometría evaluativa se han consolidado firmemente como herramienta en la gestión de la investigación y toma de decisiones en el ámbito de la política científica. Una de las instituciones donde más está creciendo este uso es en las universidades españolas que cada vez se encuentran en un entorno más competitivo y tienen una mayor necesidad de conocer el rendimiento de sus investigadores. Teniendo en cuenta este contexto en el presente trabajo se expone una propuesta para la creación de unidades de bibliometría en las universidades españolas. El objetivo específico es, por tanto, ilustrar el modelo y funciones de dichas unidades que han de basarse en tres pilares fundamentales: control de las fuentes de la información, realización de informes y asesoramiento y formación. Además de la propuesta teórica se presentan diferentes ejemplos llevados a cabo en las Universidades de Navarra y Granada. El texto concluye subrayando

  11. Neurología funcional del blefaroespasmo Functional neurology of blepharospasm

    Directory of Open Access Journals (Sweden)

    Fidias E. León-Sarmiento

    2008-08-01

    Full Text Available El blefaroespasmo esencial benigno cursa con movimientos repetitivos anormales del cierre de los párpados y espasmo del músculo orbicular de los ojos. Modernas teorías postulan que este trastorno del movimiento se origina por alteraciones en el procesamiento de la información aferente, con posterior desintegración de dicha información a nivel del programa neural sensorimotor que existe en el sistema nervioso central, que se manifiesta luego como movimiento anormal en los individuos genéticamente susceptibles. Diferentes investigaciones que incluyen estudios imagenológicos, genéticos y neurofisiológicos han proporcionado nuevos hallazgos acerca de las áreas neurales involucradas en esta patología y la forma como se genera este trastorno. Dentro de estas investigaciones sobresale el estudio del reflejo del parpadeo obtenido eléctricamente, el cual consta de tres respuestas llamadas no-nociceptiva (R1, nociceptiva (R2 y ultranociceptiva (R3. Dicho reflejo y, principalmente, la respuesta refleja ultranociceptiva (R3 parece ser muy útil para entender más profundamente la fisiopatología de esta distonía focal y realizar la endofenotipificación funcional y seguimiento en la neuro rehabilitación correspondiente de este complejo problema neurológico.Benign essential blepharospasm is characterized by abnormal repetitive movements of lid closure and spasm of the orbiculari oculi muscles. Modern theories postulate that this movement disorder originates by abnormal processing of afferent information with further disintegration of the sensorimotor neural program at central levels of the nervous system all of which is seen as dystonic movements in genetically susceptible people. Different investigations including neuroimagin, genetic and neurophysiological studies have discovered new findings on what structures are involved and how this abnormal movement is generated. Among these research is noteworthy the study of electrically elicited

  12. FUNCIONES EJECUTIVAS: UN ESTUDIO DE LOS EFECTOS DE LA POBREZA SOBRE EL DESEMPEÑO EJECUTIVO

    Directory of Open Access Journals (Sweden)

    MARIEL MUSSO

    2010-01-01

    Full Text Available La bibliografía acerca del impacto negativo de la pobreza sobre el desarrollo neurocognitivo se ha ampliado y profundizado en los últimos años. Sin embargo, la explicación acerca de las formas y mecanismos a través de los cuales actúa la pobreza, requiere un mayor estudio. En el presente artículo se describen y analizan los efectos de algunos mecanismos de la pobreza sobre el desarrollo de funciones ejecutivas tales como: el control de interferencia y planificación al inicio de la edad escolar. En el año 2005 se trabajó con una muestra de 80 niños de ambos sexos, de 6 a 10 años de edad que eran alumnos de primer año de la Educación General Básica (EGB, en una escuela incluida en el Plan Nacional de Mil Escuelas Bajo el Nivel de Pobreza. También se trabajó con un grupo control de 40 niños sin riesgo que asistían a una escuela de nivel socioeconómico medio. Se administraron pruebas para medir el control de interferencia y escalas de observación comportamental y de percepción del vínculo con respecto a cada padre. Se hallaron diferencias significativas en cuanto al desempeño ejecutivo entre ambos grupos. La percepción de control hostil de parte de la madre, del padre y la edad del niño, resultaron variables predictivas de la capacidad de planificación. Las diferencias significativas halladas en tre los niños expuestos y no expuestos a la pobreza, son consistentes con una larga serie de estudios e investigaciones acerca de los efectos de esta y especialmente de su duración, sobre el desarrollo físico, neurológico, cognitivo y social del niño.

  13. Perfiles de personas con deficiencia mental basados en las funciones motrices gruesas

    Directory of Open Access Journals (Sweden)

    Isabel María FERRÁNDIZ VINDEL

    2009-11-01

    Full Text Available RESUMEN: El propósito de este estudio ha sido identificar posibles subtipos de alumnos con Deficiencia Mental basados en funciones motrices gmesas. Se seleccionó un grupo de alumnos, de un centro específico de Deficiencia Mental, que no presentaron deficiencias motóricas asociadas y se les administraron los subtests de motricidad gruesa del «Test Bruininks-Ozeretsky para medir la eficacia motriz». Los cuatro subtipos resultantes mostraron diferentes perfiles de desarrollo motor. A partir de estos resultados, se recomienda diseñar programas específicos que intenten paliar los trastornos motrices gruesos, analizados para cada uno de los subtipos hallados, y realizar adaptaciones curriculares pertinentes, teniendo en cuenta los perfiles motrices estudiados.ABSTRACT: The goal of this work was to identify some different cathegories of mental retarded people, depending on their gross motor functioning. A group of mental retarded people was selected from a special education school. None of theese students presented any associated motor deficiency. The gross motor subtests from the Bruininks-Ozeretsky test were administered in order to evaluate the motor eficiency of these mental retarded people. The resulting four cathegories showed different motor development profiles. From theese results it's recommended to design curricula-based intended to amiliorate the specific gross motor deficits of each group and making didactical schedules taking into account the motor profiles studied.RESUME: Le propos de cette étude est identifier possibles subtypes d'élèves avec déficience mental basses en fonctions motrices grosses. On a selectioné un groupe d'élèves dans un centre especifique d'insuffisance mental qui ne présentent pas insuffisance motoriques associés, on les a passé les subtests de motricité grosse du test Bruininks-Ozeretsky pour mesurer l'efficacité motrice. Les quattre subtypes resultants montrent des différents profils du

  14. Avaliação do potencial de aproveitamento energético dos resíduos de madeira e derivados gerados em fábricas do polo moveleiro de Ubá - MG

    Directory of Open Access Journals (Sweden)

    Rogério Machado Pinto Farage

    2013-03-01

    Full Text Available http://dx.doi.org/10.5902/198050988454O presente estudo avaliou o potencial de reaproveitamento energético dos resíduos de madeira e seus derivados gerados no Polo Moveleiro de Ubá, MG. Painéis reconstituídos de MDF (medium density fiberboard, aglomerado e compensado foram caracterizados e classificados, identificando assim as oportunidades e possíveis limitações quanto à sua utilização. Por meio de diagnóstico realizado em 11 fábricas de móveis, verificou-se que os resíduos de madeira compreendem mais de 90 % do total dos resíduos sólidos gerados. Além da grande quantidade gerada, não foi identificada nenhuma ação integrada entre as fábricas do Polo para o adequado gerenciamento dos resíduos, negligenciando seus riscos ambientais e sanitários, bem como seu potencial energético. Contudo, os teores de umidade e poder calorífico dos resíduos demonstraram potencial para o seu reaproveitamento energético através da produção de briquetes. Os gases gerados em ensaios de combustão dos resíduos não apresentaram substâncias ou compostos tóxicos acima dos limites preconizados pelas normas ambientais, verificando, neste aspecto, um bom desempenho ambiental para o aproveitamento destes resíduos conforme proposto pelo presente estudo. Entretanto, as cinzas dos resíduos de aglomerado BP (baixa pressão e FF (finish foil apresentaram elevadas concentrações de cromo, enquadrando-se como Classe I (perigosos, segundo a ABNT/NBR 10004/2004.

  15. Análise de implantação de um sistema de aproveitamento de água pluvial em um empreendimento residencial na cidade de Recife-PE

    Directory of Open Access Journals (Sweden)

    Micaella Raíssa Falcão de Moura

    2018-01-01

    Full Text Available Os sistemas de aproveitamento de água pluvial (SAAP para fins não potáveis em edificações representam uma das medidas para reduzir a demanda de água potável e minimizar os problemas relacionados à disponibilidade dos recursos hídricos. O trabalho avaliou a viabilidade técnica e financeira da implantação de um SAAP em um empreendimento residencial- em construção- na Região Metropolitana do Recife por meio de uma simulação, fazendo uso da água da chuva para fins não potáveis na rega de jardins. Para tal, realizou-se um estudo dos índices pluviométricos da região e sua periodicidade, avaliando-se os meses de maior e menor precipitação. O reservatório de armazenamento foi dimensionado por meio do método computacional Netuno e em diferentes cenários de área de captação, de maneira a avaliar a situação ideal para suprir a demanda mensal de água da rega dos jardins. A análise econômica da construção do sistema mostrou que a sua implantação em uma edificação residencial com características similares a utilizada no estudo é tecnicamente e economicamente viável.

  16. Aproveitamento de águas pluviais e o reúso de águas cinzas em edifícios residenciais de Brasília – parte 2: viabilidade técnica e econômica

    Directory of Open Access Journals (Sweden)

    Daniel Sant'Ana

    2013-12-01

    Full Text Available A viabilidade da implementação de sistemas deaproveitamento águas pluviais (AAP e de reúsode águas cinzas (RAC em edifícios residenciaisé analisada e os resultados são apresentadosem dois artigos. A primeira parte caracteriza osusos-finais do consumo doméstico de água deedificações residenciais de Brasília e identifica opotencial de redução no consumo de água promovidopor diferentes sistemas AAP e RAC. Asegunda parte aponta possíveis soluções paraadaptação predial das tipologias residenciais deBrasília e faz uma avaliação financeira dos custos-benefícios para diferentes tipos de sistemasAAP e RAC. Em geral, resultados indicam quea adaptação predial voltada ao aproveitamentode águas pluviais em demandas externas é umasolução simples e rentável. Em alguns casos,reservatórios inferiores de água fria podem sermodificados para servir como cisternas de águapluvial, reduzindo custos de capital. Adaptaçãopredial voltada ao aproveitamento de águaspluviais em demandas internas demonstrou seruma solução inviável devido aos altos custosde reforma. Por outro lado, sistemas de reúsode águas cinzas em demandas internas promovembenefícios financeiros significativos, o queacaba compensando os custos de reforma. Oreúso de águas cinzas em demandas externasdemonstrou ser uma alternativa inviável devidoaos altos custos do sistema e aos baixos benefíciosfinanceiros.

  17. Analysis, simulation and control of electromagnetic transients in gas insulated substations in SF6 by means of grounding grid; Analisis, simulacion y control de transitorios electromagneticos en subestaciones aisladas en SF6 por medio de redes de tierra

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez Martinez, Gaston

    2007-12-15

    The use of SF6 substations is actually an extensive practice in industrial countries. Some of they replace conventional air substations and the others are new designs in the range of 34.5 kV to 1000 kV. During the switching events in a GIS substation, very fast transients overvoltage may appear and originate faults, malfunctions in the electronic and control equipment, besides the risk by electrical discharge in the personnel who are working in the substation. These overvoltage are produced by the collapse of the electric field on GIS terminals during switching events originating Very Fast Transient Overvoltage (VFTO) and the increase of the Transient Enclosure Voltage (TEV). This investigation is focused on diminishing the magnitude of the VFTO and TEV by designing and redesigning grounding grids for gas insulated substations in SF6. The objective of this work is to design a grounding grid for an air substation and redesign it for a GIS substation. The computer simulation uses a detailed model of the substation in SF6 interconnected with an aerial grounding grid and by adding methodologically grounding rods, the VFTO and TEV within the GIS are reduced. The results of the computer simulation show that the designed grounding grid allows considerably diminishing the magnitude of the VFTO; nevertheless this design doesn't appropriately attenuate the TEV magnitude. [Spanish] Hoy en dia, el uso de subestaciones GIS se ha generalizado. Algunas reemplazan a las subestaciones aereas y otras son de nueva creacion y se instalan en tensiones de 34.5kV hasta 1000 kV. Durante las operaciones de maniobra de la subestacion GIS, se presentan sobretensiones transitorias ultra rapidas que pueden dar origen a diversas fallas, a un malfuncionamiento del equipo electronico y de control asi como el riesgo por descarga electrica al personal que labora en la subestacion. Estas sobretensiones se producen debido al colapso del campo electrico en terminales del interruptor ante

  18. Análisis de las funciones administrativas y jurisdiccionales de la Superintendencia de Industria y Comercio en materia de libre competencia

    Directory of Open Access Journals (Sweden)

    María Lourdes Ramírez Torrado

    2018-05-01

    Full Text Available La Superintendencia de Industria y Comercio cumple, en temas de competencia, funciones administrativas y jurisdiccionales de las que se ha ocupado, en la mayoría de los casos, la normativa. Sin embargo, existen cuestiones que no tienen respuesta, o respecto de las cuales, si bien esta existe, resulta ambigua. El objetivo de este artículo es analizar el alcance de las funciones administrativas y jurisdiccionales confiadas a la Superintendencia en asuntos de competencia, y con ello revisar, entre otras cuestiones, la naturaleza de sus funciones, su contenido, las autoridades encargadas de cumplirlas, los controles realizados por parte de la jurisdicción (ordinaria o contenciosa a sus decisiones administrativas y jurisdiccionales. Así como plantear las distinciones entre las personas que administran justicia en la Superintendencia y los jueces habilitados para conocer de dichos procesos.

  19. AVALIAÇÃO DA CAPACIDADE FUNCIONAL DE IDOSOS EM UMA COMUNIDADE DO MUNICÍPIO DE MORENO – PE

    Directory of Open Access Journals (Sweden)

    MARIA EMÍLIA VILELA TENÓRIO

    2006-01-01

    Full Text Available El objetivo de este estudio fue evaluar la capacidad funcional de las personas mayores. Es una investigación descriptiva, realizada en la Comunidad Alto das Estrelas, Moreno-PE, con 30 personas mayores registradas en PSF. Para recoger los datos necesarios se usó un formulario constando de tres partes: 1 identificación de la persona mayor, 2 Escala de Actividades de Vida Diaria (AVD y Escala de Actividades Instrumentales de Vida Diaria (AIVD, 3 identificación de las causas de las incapacidades de la persona mayor, aplicado durante la visita domiciliar. Los resultados obtenidos mencionaron: 16 mujeres y 14 hombres; edad entre 60 y 70 años; agricultores casados, jubilados o pensionistas; no alfabetizados; viviendo con hijos y nietos, ayudándoles; realizando actividades de ocio y actividades religiosas. Las quejas principales sobre la salud: la falta de memoria (“el olvido” y las alteraciones visuales. Se descubrieron tres personas mayores que dependían de ayuda, debido a secuela decurrente de Accidente Vascular Cerebral, enfermedad óseo-articular y enfermedad psiquiátrica. Se elaboró una propuesta de rehabilitación y mantenimiento de la capacidad funcional de las personas mayores atendidas en USF.

  20. Una Perspectiva sobre las Dimensiones Hedónica y Funcional de La Alimentación

    Directory of Open Access Journals (Sweden)

    Eíra Costa Reis

    2017-03-01

    Full Text Available Este estudio pretende determinar el comportamiento del consumidor con respecto a las prácticas alimentarias en relación con las dimensiones hedónicas y funcionales, teniendo en cuenta que la alimentación, además de satisfacer una necesidad fisiológica, es un acto sociocultural. Fue llevado a cabo un estudio cuantitativo descriptivo con 200 individuos a través de encuestas. Los resultados muestran que los encuestados tenían un comportamiento más hedónico que funcional en sus consumos alimentarios. El comportamiento funcional estuvo más evidente en los hombres encuestados y con educación superior, mostrando una cierta peculiaridad en algunos grupos etarios.Este estudio es relevante porque investiga el comportamiento del consumidor de alimentos utilizando un enfoque utilitario emocional y añade a los conceptos de marketing, conocimientos derivados de la sociología y la antropología.

  1. La videoconferencia de escritorio como apoyo para la educación de personas con diversidad funcional

    Directory of Open Access Journals (Sweden)

    Vidal Martínez, Ana Aurora

    2015-05-01

    Full Text Available En el presente ensayo se expone el contexto del desarrollo educativo de las personas con diversidad funcional para caminar en México y el apoyo que reciben de organismos internacionales y del Gobierno Mexicano ya que dicho desarrollo se ve truncado por diversas causas, siendo una de ellas, la dificultad para asistir a una institución educativa, principalmente por la deficiente infraestructura urbana y de transporte. Este trabajo se fundamenta en investigaciones realizadas por varias instituciones como: INEGI, UNESCO, Observatorio Regional de la Sociedad de la Información, CONADIS, entre otras. Complementa este ensayo los resultados positivos de experiencias utilizando los desarrollos tecnológicos actuales, que hacen posible presentar una propuesta basada en videoconferencia de escritorio, la cual es económica, de fácil y rápida implementación y que puede utilizarse para atender la educación de las personas con diversidad funcional para caminar en búsqueda de su integración educativa.

  2. Sitio web: funciones cuadráticas una experiencia de desarrollo, implementación y evaluación

    Directory of Open Access Journals (Sweden)

    Enrique Vílchez Quesada

    2006-01-01

    Full Text Available El presente trabajo expone una experiencia de desarrollo, implementación y evaluación de un sitio Web denominado Funciones Cuadráticas. La experiencia surgió de la necesidad palpable en los centros educativos de educación secundaria en Costa Rica, de contar con una herramienta informática dirigida al profesor para la enseñanza y el aprendizaje del tema de funciones. El sitio fue desarrollado utilizando el software Dreamweaver MX 2004, se implementó inicialmente mediante una prueba piloto aplicada a un grupo de estudiantes matriculados en un curso de matemática básica en la Universidad Nacional de Costa Rica. Obtuvo resultados satisfactorios y convincentes de la necesidad de implementar este tipo de estrategia para el aprendizaje. Actualmente el sitio en su última versión se encuentra en línea en la dirección electrónica www.evqmatematicascr.com.

  3. Relação entre Otimismo e Autonomia Funcional em indivíduos com Esclerose Múltipla

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    Luísa Pedro

    2012-07-01

    Full Text Available Objetivo: O presente estudo tem como objetivo verificar a relação existente entre autonomia funcional e otimismo. Método: Os participantes são 280 indivíduos portadores de esclerose múltipla (EM diagnosticada há mais de um ano em que a maioria são mulheres, com nível elevado de escolaridade, maioritariamente casados, e a trabalhar em regime de tempo integral. A funcionalidade foi avaliada com a Escala de Impacto de Participação e Autonomia – IPA, e o otimismo com o Life Orientation Test – Revised (LOT-R. A recolha de dados realizou-se em unidades de saúde de Lisboa e cumpriu as regras conforme a Declaração de Helsínquia. Conclusão: Os resultados mostram que existem valores de correlação estatisticamente significativos, mas moderados entre as dimensões da LOT-R e IPA, sugerindo que o otimismo é um fator importante para a autonomia funcional dos indivíduos portadores de EM.

  4. El Proceso Terapéutico "Momento a Momento" desde una Perspectiva Analítico-Funcional

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    Montserrat Montaño-Fidalgo

    2011-01-01

    Full Text Available Este trabajo describe cómo se desarrolla el proceso terapéutico en un caso concreto mediante el estudio de las posibles funciones de la conducta verbal del terapeuta durante la interacción con su cliente. Para ello, se procedió a la observación de las grabaciones de las 10 sesiones que constituyeron la totalidad de la intervención terapéutica del caso estudiado. La categorización del comportamiento verbal del psicólogo en sesión fue realizada mediante el software The Observer® XT y la aplicación del Sistema de Categorización de la Conducta Verbal del Terapeuta (SISC-CVT desarrollado por las autoras y asociado a altos niveles de concordancia inter e intra observadores. El análisis de los registros permitió una primera aproximación a la formulación de una "radiografía funcional" del proceso terapéutico que puede tener importantes implicaciones para el estudio y comprensión del fenómeno clínico así como para el diseño, entrenamiento y aplicación de formas más efectivas de intervención psicológica.

  5. Tratamiento osteopático visceral frente al tratamiento farmacológico en el estreñimiento crónico funcional pediátrico

    OpenAIRE

    Blanco Díaz, María

    2014-01-01

    INTRODUCCIÓN El estreñimiento crónico funcional infantil presenta una alta prevalencia y genera importantes problemas sociales y económicos. El impacto del estreñimiento en la calidad de vida es significativo y comparable con otras patologías crónicas comunes. OBJETIVOS Evaluar la eficacia y resultado del tratamiento osteopático y el farmacológico en el estreñimiento crónico funcional infantil con referencia al patrón defecatorio, calidad de las heces, efectos secundarios y calidad de vida...

  6. Aplicación de la resonancia magnética funcional en la evaluación prequirúrgica en neurocirugía

    OpenAIRE

    Barrós Loscertales, Alfonso Roberto; Ávila Rivera, César; Parcet Ibars, María Antonia

    2001-01-01

    Setenes Jornades de Foment de la Investigació de la FCHS (Any 2001-2002) La resonancia magnética funcional presenta un gran potencial en la evaluación prequirúrgica de las funciones cognitivas básicas motoras, lingüísticas y mnésicas. Sus resultados se basan en el denominado efecto BOLD (blood oxigenation level dependency) (Ogawa y cols., 1993), que permite visualizar e identificar áreas de incremento metabólico basándonos en el consumo neuronal de oxígeno, in vivo y de forma n...

  7. Efectividad a corto plazo del vendaje neuromuscular y vendaje funcional en la corrección del retropié pronado y supinado

    OpenAIRE

    Luque-Suárez, Alejandro

    2011-01-01

    La utilización de métodos de corrección articular de las dealineaciones del pie en el plano frontal dentro del campo de la medicina, fisioterapia o la podología se encuentra ampliamente documentado y ha sido comúnmente empleado. Dentro de estos dispositivos se encuentran el vendaje funcional y el vendaje neuromuscular (también denominado kinesiotaping, medical taping, neurotaping o balance taping). Objetivos: 1.Comparar la efectividad del vendaje funcional y el vendaje neuromuscular en la...

  8. Elaboración del manual de funciones de la Unidad Educativa Técnico Salesiano en la ciudad de Cuenca en el periodo 2014

    OpenAIRE

    León Ortiz, Ximena Magdalena; Vaca Yar, Mishel Dayana

    2014-01-01

    El presente documento detalla las diferentes fases que se deben cursar para la elaboración del manual de funciones de la Unidad Educativa Técnico Salesiano de la Ciudad de Cuenca, el mismo que se convierte en una herramienta de gran importancia y utilidad para el Departamento de Gestión de Talento Humano, aportando la Institución un descriptivo de funciones, responsabilidades y requerimientos que amerita cada uno de los cargos. This document details the different phases that must take for ...

  9. Dependencia funcional y su relación con la mortalidad general en adultos mayores. México: 2001-2015

    OpenAIRE

    Daniel Lozano Keymolen; Bernardino Jaciel Montoya Arce; Sergio Cuauhtémoc Gaxiola Robles Linares; Yuliana Gabriela Román Sánchez

    2018-01-01

    Objetivo: El objetivo de este artículo es estimar las probabilidades de transición entre los diversos grados de dependencia funcional, así como la capacidad predictiva de dicha dependencia para la mortalidad general de hombres y mujeres de 65 años y más residentes en México. Métodos: Mediante probabilidades se calculan transiciones entre diversos grados de dependencia funcional y, con modelos de riesgos proporcionales de Cox, se estiman los riesgos relativos de mortalidad. Resultados: Los ...

  10. Evaluation of a Trapezoidal Predictive Controller for a Four-Wire Active Power Filter for Utility Equipment of Metro Railway, Power-Land Substations

    Directory of Open Access Journals (Sweden)

    Sergio Salas-Duarte

    2016-01-01

    Full Text Available The realization of an improved predictive current controller based on a trapezoidal model is described, and the impact of this technique is assessed on the performance of a 2 kW, 21.6 kHz, four-wire, Active Power Filter for utility equipment of Metro Railway, Power-Land Substations. The operation of the trapezoidal predictive current controller is contrasted with that of a typical predictive control technique, based on a single Euler approximation, which has demonstrated generation of high-quality line currents, each using a 400 V DC link to improve the power quality of an unbalanced nonlinear load of Metro Railway. The results show that the supply current waveforms become virtually sinusoidal waves, reducing the current ripple by 50% and improving its power factor from 0.8 to 0.989 when the active filter is operated with a 1.6 kW load. The principle of operation of the trapezoidal predictive controller is analysed together with a description of its practical development, showing experimental results obtained with a 2 kW prototype.

  11. Exploración funcional de la Tiroides: Determinación del yodo proteico en la sangre

    Directory of Open Access Journals (Sweden)

    Adolfo Bisso

    1956-07-01

    Full Text Available Se estudió un total de 129 sujetos distribuídos en la forma siguiente: 39 de control; 19 con bocio coloide normofuncionante; 12 con hipotiroidismo; 26 con hipertiroidismo; 18 con obesidad; 3 gestantes, 10 con endocrinopatías diversas, y 2 con miastenia gravis. En todos se realizó la determinación de yodo proteico en sangre, y en la mayoría se determinaron el metabolismo basal y el colesterol en la sangre. Ocasionalmente se efectuó la determinación del metabolismo en somnolencia. 1.- En sujetos sin enfermedad funcional tiroidea, las cifras de yodo proteico varían entre 4.20 y 7. 10 mcgrs. por ciento, con un promedio de 5.47±:0.15 y D.S. de 0.89 ± 0.10. Puede aceptarse como límites normales entre 3.5. y 8 mcgrs. por ciento. Los obesos y los enfermos con bocio coloide normofuncionante dan resultados similares, mientras que los hipertiroideos arrojan cifras significativamente más altas, y los hipotiroideos tienen cifras significativamente más bajas. 2.- El resultado de la determinación del yodo proteico en la sangre, guarda estrecha relación con el diagnóstico clínico de actividad tiroidea, excepto en los casos de introducción exógena de yodo, sea hormonal o no. 3.- El metabolismo basal si bien en estudio de grupos es alto en el hipertiroidismo, normal en los casos de bocio coloide normofuncionante, y bajo en el hipotiroidismo y en la obesidad, tiene discrepancias muy grandes con el diagnóstico clínico en cada caso en particular, excepto en el hipotiroidismo. 4.- El colesterol en cada grupo, estuvo en promedio, dentro de límites normales, y en cada caso particular fué muy variable e independiente del estado funcional tiroideo. 5.- De los tres métodos de exploración funcional de la glándula tiroidea que se han utilizado, el único que ha demostrado tener valor en el diagnóstico individual, ha sido la determinación del yodo proteico, siempre que se excluyera la introducción de yodo del exterior.

  12. Touch and step potential analysis at 23.9kV to 4.16kV & 13.8kV to 4.16kV distribution substations with pad-mounted transformers, floating grounds, and other exposed ungrounded metal bodies using WinIGS

    Science.gov (United States)

    Guzman, David G.

    An electrical substation is composed of various subsystems that allow for the effective and safe operation of the power grid. One of the subsystems integrating a conventional substation is defined as the ground grid system. This system allows for the effective operation of the power grid and all the electrical equipment connected to it by providing a ground potential reference, commonly known as the system ground. In addition, the ground grid system provides safety to the workers and the public transiting inside or living nearby a substation by reducing the step and touch potential (or voltage) levels present during a system fault. In today's utility industry practices there is an increasing trend for using pad-mounted electrical equipment for substation applications in an effort to construct new or upgrade existing electrical facilities inside limited property spaces. This thesis work presents an analysis for the effects of touch and step voltages at existing distribution substations where 23.9kV to 4.16kV & 13.8kV to 4.16kV pad-mounted transformers and other pad-mounted switchgear was installed to replace the traditional station class equipment. Moreover, this study will expose modeling techniques employed to define and determine the effects of floating grounds and other exposed metal bodies inside or surrounding these substations using WinIGS; this is in an effort to determine any risks of electric shock associated with this type of installations. The results presented in this work are intended to verify the requirements for the ground grid analysis and design for 4.16kV distribution substations with pad-mounted equipment in order to prevent dangerous step and touch voltage levels appearing at these sites during system faults; and ultimately prevent exposing individuals to the risk of an electric shock.

  13. Aproveitamento de águas pluviais e o reúso de águas cinzas em edifícios residenciais de Brasília – parte 1: reduções no consumo de água

    Directory of Open Access Journals (Sweden)

    Daniel Sant'Ana

    2013-12-01

    Full Text Available Sistemas de aproveitamento de águas pluviais(AAP e de reúso de águas cinzas (RAC sãoestratégias de gestão descentralizadas capazesde promover reduções na demanda urbanade água. No entanto, pouco se sabe sobre suaviabilidade para uma implementação estratégicaem edificações. Para avaliar a viabilidadedesses sistemas hidráulicos em edificações residenciais,é fundamental compreender o usodesagregado de água para estimar o potencialde redução no consumo de água e verificar aaplicabilidade, os custos e os benefícios deadaptação predial. O presente artigo foca nacaracterização dos usos-finais de água do estoquede edificações residenciais de Brasília, e naidentificação do potencial de redução do consumode água promovido por diferentes sistemasAAP e RAC. Em geral, resultados demonstramum alto índice de consumo de água em chuveiros(23,0%, máquinas de lavar roupa (21,4% edescargas sanitárias (15,3%. Já os usos externosde água representam uma pequena fraçãodo consumo predial total (3,5%. Em média, resultadosindicam que as áreas de cobertura sãocapazes de fornecer águas pluviais para suprir48% da demanda em lavagem de roupas, 60%em descargas sanitárias e 100% em lavagem depisos e irrigação. Sistemas de reúso de águascinzas apresentaram maiores valores de economiade água em lavagem de roupas (2.541m³/ano e descarga sanitárias (1.815 m³/ano.Ambos sistemas AAP e RAC são capazes depromover reduções equivalente a 811 m³/ano.

  14. Relaciones entre variables sociodemográficas, incapacidad funcional, dolor y desesperanza aprendida en pacientes con diagnóstico de artritis reumatoide

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    Stefano Vinaccia

    2004-01-01

    Full Text Available El objetivo de este estudio descriptivo transversal fue estudiar las relaciones entre variables sociodemográficas, incapacidad funcional, dolor y desesperanza aprendida en pacientes con artritis reumatoide. Se utilizó una muestra de 124 pacientes (110 mujeres y 14 hombres diagnosticados con artritis reumatoide según los criterios del American College of Rheumatology. Como instrumento de medida de la discapacidad funcional se utilizó el Activities of Daily Living (HAQ-ADL, para evaluar el dolor se aplicó el Pain Severity Scale MOS y para la desesperanza aprendida el Arthritis Helplessness Index (AHÍ. Los resultados indicaron que los factores sociodemográficos son mejores predictores de desesperanza que el dolor y la incapacidad funcional, hecho que presenta evidentes discrepancias con investigaciones que plantean lo contrario, es decir una fuerte relación entre incapacidad funcional, dolor y desesperanza. Probablemente estas diferencias dependan de factores culturales que diferencian claramente la sociedad norteamericana de la colombiana con respecto al rol, la forma de atención y al cuidado de los enfermos crónicos. Esto nos permite entender más coherentemente una enfermedad crónica multifactorial, como es la artritis reumatoide, mediante un modelo bio-psico-social-ambiental y cultural.

  15. Funcionamento intestinal e a relação com a independência funcional de indivíduos com lesão medular

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    Soraia Assad Nasbine Rabeh

    2013-01-01

    Full Text Available OBJETIVOS: Caracterizar indivíduos adultos que sofreram lesão de medula espinhal; avaliar a independência funcional considerando o nível da lesão; descrever a ocorrência de problemas de funcionamento intestinal e a relação com o nível de independência funcional. MÉTODO: Estudo observacional, transversal. Para investigar a independência funcional foi utilizada a escala Medida de Independência Funcional. Para avaliar o funcionamento intestinal, as orientações recebidas e as práticas de autocuidado, utilizaram-se as Diretrizes do Consórcio de Medicina da Lesão Medular. RESULTADOS: Dos 22 participantes, 91% eram homens, com média de idade de 38 anos (DP 11,7 e 50,0% apresentavam dependência mínima e participavam de programa de reabilitação. Verificou-se alteração no padrão de funcionamento intestinal pós-lesão. CONCLUSÃO: A literatura enfatiza a importância de instituir programas de intervenção por meio de estratégias educativas para o controle do intestino neurogênico.

  16. Estimación de funciones de producción en microempresas informales de la ciudad de Osorno, Chile

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    Camila Antipa Castillo

    2012-07-01

    Full Text Available En este trabajo se estiman funciones de producción para microempresas informales del sector urbano de la comuna de Osorno, Chile. La metodología consiste en construir una matriz insumo producto con base en los antecedentes de la estructura de compras de empresas informales de la ciudad, dicha matriz se adecua para lograr los propósitos de la investigación, donde se analiza la estructura productiva y los componentes del valor agregado de los sectores comercio, servicios y manufactura. A pesar de que son sectores muy distintos, se verifica que no existen importantes diferencias en la composición del valor agregado y que los impuestos que pierden por la condición de informalidad, no son relevantes en el excedente.

  17. Funciones de costos internos y externos en un modelo estratégico de transporte de carga

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    Luis Gabriel Márquez Díaz

    2010-11-01

    Full Text Available Se revisan las funciones de costos internos y externos,con fines de modelación estratégica del transportede carga. Se estudian el costo interno del tiempo, elcosto interno de operación y cinco componentes delcosto externo: costo externo de la congestión, costoexterno de los accidentes, costos de la polución delaire, costo del cambio climático y costo externo dela infraestructura; a partir de estos se deriva la funciónde costo marginal total. Se encuentra que es posibleestimar de forma empírica los parámetros de lasfunciones aplicables al transporte de cargainterregional en Colombia en los modos de transportecarretero, ferroviario y fluvial, y con ellos estudiarlos costos marginales sobre una red estratégica detransporte de carga.

  18. Actualización sobre estreñimiento crónico funcional en niños

    OpenAIRE

    Carlos Alberto Velasco

    2005-01-01

    El estreñimiento crónico es un problema frecuente en la edad pediátrica; 95% de los casos es funcional, es decir, no debido a causas orgánicas, anatómicas o por ingesta de alimentos. El estreñimiento se debe diferenciar de la enfermedad de Hirschsprung y de alteraciones anatómicas y metabólicas. La evaluación clínica incluye una historia clínica completa, examen físico adecuado y paraclínicos como radiología, manometría anorrectal y biopsia rectal. El manejo incluye cambios en el medio ambien...

  19. Estimación de funciones de producción en microempresas informales de la ciudad de Osorno, Chile

    Directory of Open Access Journals (Sweden)

    CAMILA ANTIPA CASTILLO

    2012-01-01

    Full Text Available En este trabajo se estiman funciones de producción para microempresas informales del sector urbano de la comuna de Osorno, Chile. La metodología consiste en construir una matriz insumo producto con base en los antecedentes de la estructura de compras de empresas informales de la ciudad, dicha matriz se adecua para lograr los propósitos de la investigación, donde se analiza la estructura productiva y los componentes del valor agregado de los sectores comercio, servicios y manufactura. A pesar de que son sectores muy distintos, se verifica que no existen importantes diferencias en la composición del valor agregado y que los impuestos que pierden por la condición de informalidad, no son relevantes en el excedente.

  20. Dependencia funcional y enfermedades crónicas en ancianos mexicanos Functional dependence and chronic disease in older Mexicans

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    Melba Barrantes-Monge

    2007-01-01

    Full Text Available OBJETIVO: Determinar la prevalencia de dependencia funcional y las enfermedades crónicas que se le asocian. MATERIAL Y MÉTODOS: El estudio se realizó de junio a diciembre de 2004 en el Departamento de Geriatría del Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, en México, DF. Los datos de las variables se obtuvieron de la información de la encuesta para el Estudio Nacional sobre Salud y Envejecimiento en México (ENASEM, realizada con base en la Ley de Información Estadística y Geográfica,Capítulo V,Artículo 38.Se incluyó un total de 4 872 personas mayores de 65 años, a quienes se les interrogó sobre ayuda para las actividades básicas de la vida diaria (AVD y actividades instrumentales (AIVD de la vida diaria; así como sobre la presencia de enfermedad crónica. RESULTADOS: De los mayores de 65 años, 24% resultó dependiente en AVD y 23% en AIVD. Las enfermedades crónicas relacionadas con dependencia funcional en actividades básicas e instrumentadas fueron las enfermedades articular y cerebrovascular, el deterioro cognitivo y la depresión. CONCLUSIÓN: La prevalencia de dependencia funcional es alta enlos mayores de 65 años.Este estudio demuestra cuáles enfermedades crónicas están asociadas con la dependencia. Es necesario desarrollar medidas orientadas al tratamiento y prevención de estas entidades crónicas que se asociaron con dependencia funcional.OBJECTIVE: The aim of this study is to determine the prevalence of functional dependence in older Mexicans and associated chronic conditions. MATERIAL AND METHODS: The study was conducted between June and December 2004 in the Geriatric Department of the Instituto Nacional de Ciencias Medicas y Nutrición Salvador Zubiran, Mexico City. The data for the variables were obtained from the information in the National Study of Health and Aging in Mexico survey (ENASEM.The survey was based on the law for statistical and geographic information,Chapter V

  1. Actividad física y capacidad funcional en el adulto mayor: el taekwondo como alternativa de mejoramiento

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    Pedro Carazo Vargas

    2001-01-01

    Full Text Available Con el envejecimiento se presenta una serie decambios de orden fisiológico, psicológico y social, capacesde reducir la capacidad para efectuar eficientemente lastareas de la vida diaria. En la presente revisión de litera-tura se realiza una descripción de estas modificaciones,así como una recopilación de los principales efectos de laactividad física sobre la capacidad funcional del adultomayor. Se analizan los primeros indicios que señalan altaekwondo como una importante alternativa para mejo-rar el desempeño en las tareas de la vida diaria y a la vezse recomiendan las principales pautas a seguir para in-vestigar la temática

  2. A qualificação do dever: dialogo entre a analise do discurso e a abordagem funcional

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    Anna Flora BRUNELLI

    2013-11-01

    Full Text Available Neste trabalho, apresentamos algumas reflexões sobre o discurso de autoajuda, analisando enunciados deonticamente modalizados sob duas óticas complementares: a da Análise do Discurso francesa e a funcional. Considerando que a avaliação deôntica pressupõe sempre uma fonte ou causa e um alvo sobre quem incide a avaliação, verificamos como enunciados deonticamente nodalizados contribuem para a construção da imagem de orientador do sujeito do discurso de autoajuda, sustentando-a linguisticamente. Além disso, avaliamos o papel que as formas atenuadas de manifestação dos valores deônticos desempenham nesse discurso, mostrando algumas vantagens da aproximação das abordagens que orientam a análise.

  3. A qualificação do dever: dialogo entre a analise do discurso e a abordagem funcional

    Directory of Open Access Journals (Sweden)

    Anna Flora BRUNELLI

    2009-07-01

    Full Text Available Neste trabalho, apresentamos algumas reflexões sobre o discurso de autoajuda, analisando enunciados deonticamente modalizados sob duas óticas complementares: a da Análise do Discurso francesa e a funcional. Considerando que a avaliação deôntica pressupõe sempre uma fonte ou causa e um alvo sobre quem incide a avaliação, verificamos como enunciados deonticamente nodalizados contribuem para a construção da imagem de orientador do sujeito do discurso de autoajuda, sustentando-a linguisticamente. Além disso, avaliamos o papel que as formas atenuadas de manifestação dos valores deônticos desempenham nesse discurso, mostrando algumas vantagens da aproximação das abordagens que orientam a análise.

  4. Constipación funcional en pediatría: Criterios de Roma IV, diagnóstico y tratamiento

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    David Avelar Rodríguez

    2018-01-01

    Full Text Available La constipación (o estreñimiento en pediatría es una de las entidades pediátricas más comunes que el médico general y el pediatra ven en la práctica diaria. Es la causa gastrointestinal más común que resulta en la derivación del paciente a especialistas, causa significativa de ansiedad en los padres. La constipación en pediatría es funcional en 90-95% de los casos. El diagnóstico continúa siendo basado en los criterios de Roma IV. El tratamiento consiste en una etapa de desimpactación y una de mantenimiento.

  5. Manejo de restricciones con funciones de penalidad para la planificación del mantenimiento de locaciones petroleras

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    Jorge Ceferino Valdez

    2014-06-01

    Full Text Available La explotación y transporte de petróleo son actividades muy importantes para el desarrollo económico de la sociedad moderna insdustrial. Sin embargo, estas actividades son generadoras de riesgos que se traducen en contaminaciones que afectan el medio ambiente. Por esta razón, es importante que las empresas petroleras lleven a cabo un correcto mantenimiento de sus locaciones. En casos de planificación de mantenimiento de 100 o más locaciones, PAE es una herramienta que provee un plan de visitas para el mantenimiento, usando un algoritmo evolutivo para producir múltiples soluciones a este problema con restricciones. En este trabajo, se implementa una herramienta de optimización evolutiva aplicando técnicas de manejo de restricciones basadas en funciones de penalidad. Detalles de la implementación, resultados experimentales y beneficios son presentados en este informe.

  6. Consumo de alcohol y funciones ejecutivas en adolescentes: una revisión sistemática

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    Miguel Ángel Villegas Pantoja

    2013-01-01

    Full Text Available Objetivo: el consumo de alcohol es un problema de salud pública que puede implicar riesgos para la integridad del córtex prefrontal, especialmente lo relacionado al funcionamiento ejecutivo. Aunque se han estudiado los efectos negativos sobre la región prefrontal de adultos, la evidencia en la población adolescente es menor. El objetivo de este artículo es conocer el estado del arte de la relación entre el consumo de alcohol y las funciones ejecutivas de adolescentes. Materiales y métodos: se realizó una búsqueda en las bases de datos Academic OneFile, Academic Search Complete, Dialnet, doyma, Journal@Ovid, MedicLatina, Medline, Proquest, PsycArticles, sage y Springer para identificar artículos publicados entre enero de 2006 y noviembre de 2011. La muestra final fue de trece artículos. Resultados: los estudios mostraron divergencia de resultados en los componentes de las funciones ejecutivas; sin embargo, los componentes de inhibición de respuestas y toma de decisiones parecen ser alterados por diferentes patrones de consumo de alcohol en más del 70 % de las investigaciones. Conclusiones: los hallazgos indican que la investigación de este fenómeno en población adolescente aún se encuentra en etapas de exploración; no obstante, existe evidencia de que el consumo de alcohol puede ser peligroso para el funcionamiento cognitivo adolescente.

  7. Avaliação do desempenho físico e funcional respiratório em obesos

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    Kadma Karênina Damasceno Soares

    Full Text Available INTRODUÇÃO: O desempenho físico tem se tornado importante objeto de estudo em obesos para a avaliação pré-operatória de cirurgia bariátrica. Contudo, ainda há escassez de estudos, especialmente, no que se refere aos testes de campo ou de capacidade funcional. OBJETIVO: comparar os resultados do Teste de Caminhada de seis Minutos (TC6' com os do Shuttle Walk Test (SWT em mulheres obesas, juntamente com as respostas do questionário HAQ-20. METODOLOGIA: avaliaram-se 13 mulheres, com idade média de 44 ± 11 anos e com Índice de Massa Corpórea (IMC 43 ± 5 kg/m², submetidas, aleatoriamente e de forma consecutiva, a TC6', SWT, espirometria, força muscular respiratória e questionário HAQ-20. RESULTADOS: Constatou-se que as distâncias apresentaram-se significativamente diferentes (TC6' = 489 ± 129 m e SWT = 244 ± 161 m, sendo que o score do HAQ-20 apresentou uma mediana de 1,125. Quando verificada a correlação do HAQ-20 com TC6' e o SWT, esta foi constatada apenas para o domínio vestir-se com os resultados do TC6. CONCLUSÃO: Com base nesses resultados, conclui-se que a distância percorrida no TC6' foi maior que no SWT, o que sugere melhor aplicabilidade do TC6' em obesos, sendo, nesse caso, possivelmente mais sensível na avaliação da capacidade funcional que o SWT. Os resultados do HAQ-20 foram pouco discriminadores, pois um domínio entre oito mostrou-se significativo quando correlacionado com as distâncias percorridas.

  8. La relación entre el tiempo no estructurado, el ocio y las funciones cognitivas en personas mayores

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    María Plaza Carmona

    2015-12-01

    Full Text Available Introducción Con la jubilación, el aumento del tiempo no estructurado o libre de obligaciones supone un hándicap para preservar las funciones cognitivas. Objetivos 1 Analizar la planificación del tiempo no estructurado de mayores sanos, y 2 verificar la relación entre el tipo de ocio y las funciones cognitivas. Metodología Setenta y dos jubilados distribuidos en 3 grupos: G1 (Universidad de la experiencia, G2 (Entrenamiento de memoria y G3 (Juegos de mesa. Se aplicaron el test del reloj, que refleja las actividades realizadas un día normal, y diferentes pruebas cognitivas. Resultados Análisis de varianza y comparaciones post hoc muestran que G1 y G2 detallan con más precisión la distribución del tiempo y ambos grupos practican más actividades cognitivas que G3, que prefiere actividades sociales. El grupo G1 hace un descanso «activo» frente a G2 y G3, que principalmente ven la televisión y duermen la siesta. Las pruebas cognitivas son significativamente mejores en G1 que en los otros grupos y, a su vez, mejor G2 que G3. Conclusiones El tipo de práctica de actividades de ocio se relaciona positiva y significativamente con una planificación más variada e intensa del tiempo no estructurado y un mejor nivel cognitivo.

  9. Sitio web: funciones cuadráticas una experiencia desarrollo, implementación y evaluación

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    Ulate Solís, Gaby

    2006-08-01

    Full Text Available Resumen:El presente trabajo expone una experiencia de desarrollo, implementación y evaluación de un sitio Web denominado Funciones Cuadráticas. La experiencia surgió de la necesidad palpable en los centros educativos de educación secundaria en Costa Rica, de contar con una herramienta informática dirigida al profesor para la enseñanza y el aprendizaje del tema de funciones. El sitio fue desarrollado utilizando el software Dreamweaver MX 2004, se implementó inicialmente mediante una prueba piloto aplicada a un grupo de estudiantes matriculados en un curso de matemática básica en la Universidad Nacional de Costa Rica. Obtuvo resultados satisfactorios y convincentes de la necesidad de implementar este tipo de estrategia para el aprendizaje. Actualmente el sitio en su última versión se encuentra en línea en la dirección electrónica www.evqmatematicascr.com.Abstract:Present work exposes an experience of development, implementation and evaluation of a website named Functions Quadratic, experience happened of palpable need in the educational centers of secondary education at Costa Rica, to count on an information-technology tool guided to the professor for the teaching and the learning of theme of functions. The website was developed utilizing the software Dreamweaver MX 2004, a group of students registered at a course of basic mathematics at the University National of Costa Rica implemented initially intervening a pilot test applied. It obtained satisfactory and convincing results of the necessity to implement this type of strategy for the learning.

  10. Funciones de la supervición escolar en Venezuela. Aproximación a un modelo

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    Mogollón de González, Amada

    2006-12-01

    Full Text Available Resumen:Esta investigación tiene como propósito presentar la aproximación a un Modelo para las funciones de la supervisión escolar en Venezuela sustentado en los ámbitos, acción supervisora y funciones denominadas: Técnicas, Administrativas, Sociales, de Asistencia y Mediación. El modelo se fundamentó teóricamente en Kaufman, Stufflebeam, Teoría de Sistemas de Bertalanffy, enfoque humanista y jerarquía de las necesidades de Maslow. Es una investigación de campo realizada en Venezuela en los estados: Nueva Esparta, Distrito Federal, Carabobo, Lara, Táchira, Barinas y Delta Amacuro. El instrumento arrojó resultados que evidenciaron deficiencias, omisiones y ausencias durante el hecho supervisorio y su validación condujo a garantizar el éxito y calidad en la supervisión educativa venezolana.Abastract: This investigation must like intention present/display the approach to a Model for the functions of the scholastic supervision in Venezuela sustained in the scopes, supervisora action and denominated functions: Techniques, Administrative, Social, of Attendance and Mediation. The model was based theoretically on Kaufman, Stufflebeam, Theory of Systems of Bertalanffy, focuses humanist and hierarchy of the necessities of Maslow. It is an investigation of field made in Venezuela in the states: Nueva Esparta, Federal District, Carabobo, Lara, Táchira, Barinas and Delta Amacuro. The instrument threw results that demonstrated deficiencies, omissions and absences during the fact supervisorio and its validation lead to ensure the success and quality in the Venezuelan educative supervision.

  11. Ai Chi: efeitos do relaxamento aquático no desempenho funcional e qualidade de vida em idosos

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    Márcia Cristina Bauer Cunha

    Full Text Available OBJETIVO: Este estudo avaliou os efeitos da técnica de relaxamento aquático Ai Chi em um grupo de idosos, em relação ao equilíbrio, qualidade de vida e funcionalidade. MÉTODOS: Foram selecionados 20 idosos de ambos os sexos, com média de idade de 68,95 (± 7,42 anos, que foram submetidas à técnica Ai Chi. Os idosos foram avaliados antes e depois do programa de exercícios, que teve duração de 12 semanas, com sessões de 45 minutos, duas vezes por semana, pelas seguintes escalas: Medida de Independência Funcional (MIF, que avalia a funcionalidade; Escala de Berg, que avalia o equilíbrio; e SF36, que mensura a qualidade de vida. Para o desenvolvimento da pesquisa, utilizamos uma piscina aquecida, numa temperatura de 33-34° C. RESULTADOS: Houve melhora significante no equilíbrio pré e pós aplicação da técnica (p < 0,003, não houve melhora significante em relação às medidas de independência funcional (p < 0,10 e a qualidade de vida (p < 0,38. CONCLUSÃO: A técnica de relaxamento aquático Ai Chi proporcionou melhora do equilíbrio, porém não houve mudanças em relação à qualidade de vida e à funcionalidade em idosos independentes.

  12. Bipolar disorder and age-related functional impairment Prejuízo funcional associado à idade e transtorno bipolar

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    Alice Aita Cacilhas

    2009-12-01

    Full Text Available OBJECTIVE: Although bipolar disorder is a major contributor to functional impairment worldwide, an independent impact of bipolar disorder and ageing on functioning has yet to be demonstrated. The objective of the present study was to evaluate the effect of bipolar disorder on age-related functional status using matched controls as a standard. METHOD: One-hundred patients with bipolar disorder and matched controls were evaluated for disability. Age-related effects controlled for confounders were cross-sectionally evaluated. RESULTS: Patients were significantly more impaired than controls. Regression showed effects for aging in both groups. The effect, size, however, was significantly stronger in patients. CONCLUSION: Bipolar disorder was an important effect modifier of the age impact on functioning. While a longitudinal design is needed to effectively demonstrate this different impact, this study further depicts bipolar disorder as a chronic and progressively impairing illness.OBJETIVO: O transtorno bipolar é responsável por importante parcela do prejuízo funcional ao redor do mundo. Um efeito independente do transtorno bipolar e da idade no funcionamento ainda não foi demonstrado. O presente estudo tem o objetivo de avaliar o efeito do transtorno bipolar no prejuízo funcional relacionado à idade, com controles pareados como padrão. MÉTODO: Cem pacientes com transtorno bipolar e controles pareados foram avaliados para incapacidade. Efeitos relacionados à idade, com controle para confundidores, foram investigados. RESULTADOS: Pacientes tiveram significativamente mais prejuízo que controles. A regressão mostrou efeito para a idade em ambos os grupos, e o efeito foi significativamente mais forte nos pacientes. CONCLUSÃO: O transtorno bipolar foi um importante modificador de efeito no impacto da idade no funcionamento. Enquanto um desenho de estudo longitudinal é necessário para efetivamente demonstrar este impacto diferencial, este

  13. Repercusión de la cirugía torácica y abdómino-pélvica en el estado funcional del anciano

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    Pablo J. Landi

    2013-06-01

    Full Text Available La calidad de vida de los ancianos está determinada por su capacidad funcional, más que por el número o tipo de enfermedades que padecen. Se analizaron 43 pacientes mayores de 65 años sometidos a cirugías mayores. Se siguió longitudinalmente la evolución del estado funcional mediante el análisis de 6 variables, las actividades de la vida diaria (AVD, actividades instrumentales de la vida diaria (AIVD, la prueba de levántate y anda, prueba del alcance funcional del brazo, fuerza de prensión de la mano y velocidad de la marcha, medidas previas a la cirugía (medición basal y a los 1, 2, 3 y 4 meses posteriores al alta. Los objetivos fueron: estimar la repercusión que la cirugía tiene en el estado funcional de ancianos, determinar el tiempo que cada una de las mediciones regresa a los valores del preoperatorio en el seguimiento a 4 meses, comparar las curvas de recuperación de los valores basales de AIVD, fuerza de prensión de la mano y velocidad en la marcha, entre 2 grupos definidos por la velocidad de la marcha basal, en lentos ( 0.8 m/s. La repercusión de la cirugía en la aptitud física presentó una disminución estadísticamente significativa en AVD, AIVD, la prueba de levántate y anda y velocidad en la marcha con recuperación en tiempo variable, más allá de la convalecencia. La evaluación del estado funcional permite planear estrategias tendientes a cubrir limitaciones y necesidades del paciente y su familia en el post operatorio mediato.

  14. Perfil funcional, sociodemográfico e epidemiológico de idosos hospitalizados por fratura proximal de fêmur

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    Danielle Ferreira Santana

    2015-05-01

    Full Text Available A fratura proximal de fêmur (FPF está relacionada a altos índices de morbidade e a grande impacto sobre a capacidade funcional do idoso. O objetivo do estudo foi traçar o perfil funcional de pacientes idosos hospitalizados por FPF, analisando os tipos de fraturas, o mecanismo causal, e as características físicas e funcionais prévias ao evento. Trata-se de um estudo do tipo observacional, quantitativo, de corte transversal, cujos participantes eram pacientes hospitalizados por FPF. Foi utilizada uma Ficha de Registro para coletar os dados sociodemográficos. O grau de independência funcional e a capacidade de marcha prévia à FPF foram avaliados respectivamente pelo Índice de Barthel, o Questionário de Pfeffer e a Classificação Funcional da Marcha Modificada. A amostra foi constituída por 32 idosos com média de idade de 79 (± 9,5 anos e uma predominância do sexo feminino (71,8%, de cor parda (43,8% e baixa escolaridade. A maioria não morava sozinho e faziam uso de algum medicamento. Os idosos participantes, previamente à fratura, eram independentes para as atividades básicas da vida diária (ABVD, dependentes para as atividades instrumentais da vida diária (AIVD e não utilizam dispositivos para locomoção. A queda foi a principal causa da FPF, sendo as mais prevalentes a fratura de colo de fêmur (FCF e a fratura transtrocantérica (FTT. As comorbidades, os medicamentos, os fatores sociodemográficos, o deficit de marcha e a dependência funcional, podem estar associados à ocorrência de FPF em idosos.  

  15. Riesgo familiar total en familias con escolares según rendimiento académico Risco familiar total em famílias com escolares conforme aproveitamento acadêmico Total family risk in families with schoolchildren according to academic performance

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    CAROLINA LUCERO ENRÍQUEZ GUERRERO

    Full Text Available Este artículo presenta los resultados del estudio cuyo objetivo fue establecer las diferencias en el riesgo familiar entre dos grupos de familias: con niños escolares de alto rendimiento y niños de bajo rendimiento académico en un centro educativo distrital de Bogotá. Metodología: estudio descriptivo comparativo transversal con un componente analítico y abordaje cuantitativo; la muestra fue de 186 familias, durante abril a julio de 2007. Los resultados muestran predominio de familias nucleares en ambos grupos (65%, relación inversa entre el riesgo familiar total evaluado por el instrumento RFT 7-70 y el rendimiento académico del escolar de la familia, es decir que las familias que registraron riesgo alto (9% y medio (31% en mayor proporción son familias con escolares de bajo rendimiento académico, frente al predominio del riesgo familiar bajo (78% en las familias con niños de alto rendimiento. Se aplicó t de student para diferencia de medias y se encontró asociación (P = 0,02 entre el riesgo familiar total alto y el bajo rendimiento académico del escolar. En conclusión, estos resultados sugieren principalmente que se deben priorizar los factores de riesgo que determinan mayor riesgo familiar en familias con escolares de bajo rendimiento académico y dar atención de salud integral con enfoque familiar e intersectorial, y participación activa de la comunidad. Continuar investigando en posibles asociaciones entre salud individual, prácticas de salud, educación, ambiente socioeconómico y psicoafectivo de la familia y el logro educativo de escolares en familias con niños en edad escolar.Este artigo apresenta os resultados de um levantamento que objetiva estabelecer as diferenças no risco familiar entre dois grupos de famílias: com crianças escolares de alto aproveitamento acadêmico e crianças escolares de baixo aproveitamento acadêmico em um centro educativo distrital de Bogotá. Metodologia: levantamento descritivo

  16. Riesgo familiar total en familias con escolares según rendimiento académico Total family risk in families with schoolchildren according to academic performance Risco familiar total em famílias com escolares conforme aproveitamento acadêmico

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    CATAÑO ORDÓÑEZ NHORA

    2009-12-01

    analytic component and a quantitative approach; the sample was 186 families during the period April-July 2007. The results show a predominance of nuclear families in both groups (65%, reverse relation between the family risk evaluated by the RFT 7-70 instrument and the academic performance of the family´s schoolchild, that is to say that the families that recorded a high risk (9% and average risk (31% are, to a large extent, families with schoolchildren that show low academic performance, in respect of the predominance of low family risk (78% in families with children that show high academic performance. The t of student was applied to differentiate averages and association was found (P = 0,02 between the total high family risk and the low academic performance of the schoolchild. In conclusion, these results suggest mainly that risk factors that determine higher family risk in families with schoolchildren who show low academic performance must be prioritized and that integral healthcare must be provided with a family and intersectorial approach as well as active participation from the community. Continue research activities in possible associations between individual health, health practice, and education, socio-economic and psycho-affective environment of the family and academic achievement of schoolchildren in families with school age children.Este artigo apresenta os resultados de um levantamento que objetiva estabelecer as diferenças no risco familiar entre dois grupos de famílias: com crianças escolares de alto aproveitamento acadêmico e crianças escolares de baixo aproveitamento acadêmico em um centro educativo distrital de Bogotá. Metodologia: levantamento descritivo comparativo transversal com um componente analítico e abordagem quantitativa; a amostra foi de 186 famílias, durante abril - julho de 2007. Os resultados apresentam predomínio de famílias nucleares em ambos os grupos (65%, relação inversa entre o risco familiar total avaliado pelo

  17. LA ORGANIZACIÓN DE LOS RECURSOS HUMANOS DE LA ACTIVIDAD FÍSICA Y DEPORTE DESDE LA PERPECTIVA DE SUS FUNCIONES LABORALES

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    A. Campos

    2010-09-01

    Full Text Available

     

     

    RESUMEN

    En este estudio se describe la estructura funcional de los recursos humanos de la actividad física y deporte en la Comunidad Valenciana. En primer lugar, se determinan las funciones actuales y realizadas en su vida laboral; después su realización por épocas temporales, provincias y estratos de población, el nivel de plurifuncionalidad y las preferencias; posteriormente la consideración de temporalidad y la estructura funcional de cada entidad; y se finaliza con la formación inicial en cada función. La metodología utilizada es cuantitativa de corte descriptivo mediante encuesta, a través de una entrevista individual estandarizada por medio de cuestionario realizada a 600 personas que trabajaban en funciones de actividad física y deporte. Los resultados determinan que se desarrollan todas las funciones, siendo las principales las de impartir docencia de actividad física y deporte y cuidar y mantener la forma física para grupos. También existe una elevada plurifuncionalidad y la consideración de temporalidad en algunas funciones, así como una estructura funcional de las distintas entidades muy diversificada. Además, en la inmensa mayoría de las funciones son mayoritarias las personas sin titulación de actividad física y deporte y en todas las funciones trabajan todos los tipos de titulados de actividad física y deporte.
    Palabras Clave: Función, recursos humanos, deporte, empleo, profesionales.

     

    ABSTRACT

    In this study there is described the functional structure of the human resources of the physical activity and sport in the Valencian Community. First, there decide the functions current and realized in his  labour life; later his

  18. Dor neuropática central após lesão medular traumática: capacidade funcional e aspectos sociais Dolor neuropático central después de lesión medular traumática: capacidad funcional y aspectos sociales Central neuropathic pain after traumatic spinal cord injury: functional capacity and social aspects

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    Janaina Vall

    2005-12-01

    Full Text Available Estudo de caso comparativo com o objetivo de avaliar a capacidade funcional e os aspectos sociais de dois pacientes, ambos com lesão medular traumática, sem e com dor neuropática central associada, respectivamente. Para avaliar a capacidade funcional, foi utilizado como instrumento o Functional Independence Measure ou Escala de Independência Funcional. E para avaliar os aspectos sociais foi construído o ecomapa de cada paciente, preconizado pelo modelo Calgary de avaliação de famílias. Ambos foram aplicados no domicílio do paciente. Os resultados mostraram que o paciente com dor neuropática central secundária à lesão medular possui baixa capacidade funcional e precária rede social de apoio, quando comparado com o paciente com as mesmas condições, porém sem dor associada.Estudio de caso comparativo con el objetivo de evaluar la capacidad funcional y los aspectos sociales de dos paciente, ambos con lesión medular traumática, sin y con el dolor neuropático central, respectivamente. Para evaluar la capacidad funcional, se usó como instrumento la Escala de Independencia Funcional. Y para evaluar los aspectos sociales, el ecomapa de cada paciente fue construido, preconizado por el modelo Calgary de evaluación de familias. Los dos furon aplicados en la casa del paciente. Los resultados mostraron que el paciente con dolor neuropatico central secundario a la lesión medular posee capacidad funcional baja y precaria red social de apoyo, cuando comparado con el paciente con las mismas condiciones, pero sin el dolor asociado.Comparative study of case with the aim of evaluating the functional capacity and social aspects of two patients, both with traumatic spinal cord injury, without and with central neuropathic pain associated, respectively. To evaluate the functional capacity it was used as instrument Functional Independence Measure. And to evaluate the social aspects the ecomap of each patient one it was built, extolled by the model

  19. Magnetic substate populations of product nuclei in the /sup 11/B(d,p)/sup 12/B reaction. [1. 3 to 3. 0 MeV, j mixings and alignment

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, M; Ochi, S; Minamisono, T; Mizobuchi, A; Sugimoto, K

    1976-01-01

    Magnetic substate populations of product nuclei in the /sup 11/B(d,p)/sup 112/B reaction were measured in an energy range E/sub d/ = 1.3 to 3.0 MeV at recoil angles around theta/sub R/ = 55, 45, and 27 to 37/sup 0/. The alignment of the first excited state of /sup 12/B was determined. A comparison of the present result with theoretical predictions is given, together with the resultant information about j mixings in the /sup 12/B states. (auth)

  20. Evolution of metering and control equipment in district heating house substations. Smaller, smarter and unchangingly robust; Mess- und Regelungstechnik fuer Fernwaermehausstationen im Wandel der Zeit. Kleiner, intelligenter, unveraendert robust

    Energy Technology Data Exchange (ETDEWEB)

    Hesse, Wolfgang; Hilbig, Thomas [Samson AG, Frankfurt am Main (Germany)

    2011-07-15

    The technical evolution of house substations in hot water networks reflects the trend towards greater efficiency. Changes are to be seen above all in the requirements placed on the measurement and control technology used in the energy management functions of the electronic district heating controller as well as on safety equipment. Here DDC (Direct Digital Control) technology has created possibilities for optimising energy consumption. The authors relate the evolution of drinking water heating, self-operated regulators, electrical actuators and of electronic district heating controllers.