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Sample records for al ruido industrial

  1. Alteraciones auditivas en trabajadores expuestos al ruido industrial

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    Adel Hernández Díaz

    2007-09-01

    Full Text Available Motivados por la importancia del ruido como riesgo laboral en las actividades productivas de la Carpintería de Aluminio "Tomás Alvarez Breto" decidimos realizar un control audiométrico periódico de estos trabajadores con la finalidad de determinar el grado de exposición de los mismos y establecer las recomendaciones más importantes para su protección. Nos propusimos como objetivo determinar el grado de afectación auditiva por ruido en los trabajadores expuestos al riesgo, para lo cual se cuantificaron los niveles de ruido existentes en los diferentes puestos de trabajo, se confeccionaron las historias clínicas y se realizó un examen otoscópico y una prueba audiométrica en ambos oídos para definir el daño acústico y la presencia de hipoacusia profesional en los obreros estudiados. Al concluir el estudio pudimos comprobar que el ruido constituía un contaminante de gran importancia en esta industria. Este riesgo laboral se encontraba por encima del nivel de seguridad de 85 db(A en 9 de los 13 departamentos con que cuenta el centro y ha afectado la salud de los trabajadores ya que existían 77 casos (78,5% de hipoacusia atribuible al ruido y un gran número de trabajadores (30,6% expuestos a elevados niveles de ruido innecesariamente por la naturaleza de su labor. Por todo esto recomendamos tomar medidas que reduzcan el nivel de ruido en los puestos de trabajo donde existían niveles superiores a los permitidos, exigirse el uso de los medios de protección auditiva en los trabajadores expuestos y cumplirse estrictamente con los exámenes médicos preventivos, incluyendo las pruebas audiométricas anualmente.Motivated by the importance of the noise like labour risk in the productive activities of Aluminium Carpentry Tomas Alvarez Breto we decide to carry out a control periodic audiometric of these workers with the purpose of to determine the degree of exhibition of the same ones and to establish the most important recommendations for

  2. Alteraciones auditivas en trabajadores expuestos al ruido industrial

    OpenAIRE

    Adel Hernández Díaz; Bianka M González Méndez

    2007-01-01

    Motivados por la importancia del ruido como riesgo laboral en las actividades productivas de la Carpintería de Aluminio "Tomás Alvarez Breto" decidimos realizar un control audiométrico periódico de estos trabajadores con la finalidad de determinar el grado de exposición de los mismos y establecer las recomendaciones más importantes para su protección. Nos propusimos como objetivo determinar el grado de afectación auditiva por ruido en los trabajadores expuestos al riesgo, para lo cual se cuan...

  3. Mediciones in situ del aislamiento acústico al ruido aéreo y de impacto entre locales superpuestos.

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    Díaz Sanchidrián, César; Pedrero González, Antonio

    2001-01-01

    Se muestran los resultados de las mediciones in situ del aislamiento a ruido aéreo y del aislamiento acústico de suelos al ruido de impactos entre varias decenas de locales superpuestos, mediante aplicación de las Normas UNE-EN ISO 140-4: Medición in situ del aislamiento a ruido aéreo entre locales y UNE-EN ISO 140-7: Medición in situ del aislamiento acústico de suelos al ruido de impactos. Las magnitudes globales del aislamiento a ruido aéreo y a ruido de impactos se han obtenido por dos pro...

  4. Evaluación del riesgo de exposición al ruido

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    Moreno-Méndez, Yasmina

    2012-01-01

    El presente trabajo desarrolla el procedimiento a seguir a la hora de evaluar el riesgo por exposición al ruido de una empresa. El REAL DECRETO 286/2006, sobre protección de la salud y la seguridad de los trabajadores contra los riesgos relacionados con la exposición al ruido, establece la obligación de efectuar una evaluación basada en la medición de los niveles de ruido en aquellos puestos de trabajo en los que la apreciación directa de las condiciones de trabajo no permite llegar ...

  5. Del concepto de ruido urbano al de paisaje sonoro From the concept of urban noise to the one of sonorous landscape

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    Santillán Arturo; German-González Miriam

    2011-01-01

    El ruido urbano es uno de los problemas ambientales que la humanidad está enfrontando actualmente. Diferentes estudios han mostrado que el ruido afecta a las personas, produciendo en ellos efectos físicos y psicológicos negativos. Además, organismos internacionales han incluido al ruido dentro de los temas ambientales de investigación prioritaria. El objetivo de este trabajo es revisar la evolución que ha tenido la investigación en torno a la evaluación del ruido en zonas habitacionales urban...

  6. Aplicación de la resistencia de ruido al estudio de pinturas ricas en zinc

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    Espada Recarey, Luis

    2001-02-01

    Full Text Available Electrochemical Noise has been one of the more useful analysis methods to the study the corrosion processes due to the fact that it is simple and cheap. The objective of this work is to check the efficiency of this technique when it is applied to the study of Rich Zinc Paints and specifically the Noise Resistance parameter which is very efficiency to study metal-electrolyte systems. Then this technique was applied to Rich Zinc Paints systems of which we have already information by means of electrochemical impedance spectroscopy. The outcomes of this paper show the efficiency of applying Noise Resistance technique to explain the behavior of this kind of systems. REVISION 34 Obtención de la tenacidad de fractura dinámica de iniciación de materiales elásticos y lineales Determination of dynamic fracture initiation toughness of linear elastic materials

    La medida e interpretación del ruido electroquímico, REQ se está consolidando como uno de los métodos de análisis más utilizados para la interpretación del fenómeno de la corrosión, por su sencillez y bajo coste frente a otros tipos de metodologías del estudio. El objeto de este trabajo es comprobar la eficacia de la técnica de ruido electroquímico aplicada al estudio de las pinturas ricas en zinc, concretamente, en lo relativo al parámetro "resistencia de ruido" que tan eficaz se ha mostrado en el estudio de sistemas metal desnudoelectrolito. Para ello, se aplicó esta técnica de análisis a muestras de pinturas ricas en zinc, de las que ya se poseía información sobre su comportamiento, a través de la aplicación a las mismas muestras de la impedancia electroquímica, EIE. Los resultados de este articulo muestran la eficacia de la aplicación de la resistencia de ruido, a la hora de explicar el comportamiento de este tipo de sistemas.

  7. Evaluación de riesgos higiénicos debidos al ruido en la factoría Michelín (Valladolid)

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    Blanco Domínguez, Fátima

    2013-01-01

    Se ha realizado la Evaluación de Riesgos debidos al ruido en la Factoría Michelín de Valladolid, según cita el R.D. 286/2006 de 10 de marzo, sobre la protección de la salud y la seguridad de los trabajadores contra los riesgos relacionados con la exposición al ruido, ya que obliga a evaluar el nivel de ruido al que están expuestos los trabajadores. Una vez concluida la evaluación, se toman las medidas preventivas oportunas para que los trabajadores no se vean afectados por excesivos niveles d...

  8. La protección jurídica de los hombres de mar frente a los riesgos derivados de la exposición al ruido

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    García Posada, Severino

    1995-01-01

    La tesis tiene por objeto de estudio la protección jurídica de los hombres de mar frente a los riesgos derivados de la exposición al ruido. Para poner en evidencia que los niveles de ruido a bordo, en algunos espacios de trabajo, son altos, se cuantifican los niveles de los focos de ruido en el buque, su composición espectral y la forma de evaluarlos de forma aproximada mediante formulas semiempiricas. Posteriormente se analizan los niveles globales detectados en algunos tipos característicos...

  9. Comparación de los resultados de las mediciones in situ del aislamiento acústico al ruido aéreo de fachadas, mediante la utilización de los métodos globales con altavoces y con ruido de aviones.

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    Díaz Sanchidrián, César; Pedrero González, Antonio

    2000-01-01

    En este trabajo se comparan los resultados experimentales de las mediciones in situ del aislamiento acústico al ruido aéreo de fachadas de recintos, por aplicación en cada uno de los recintos de dos métodos globales de la Norma EN ISO 140-5, Agosto 1998. Se han utilizado como fuentes de ruido un altavoz y el ruido de aeronaves. Las mediciones acústicas se han realizado en 26 dormitorios situados en viviendas de uso residencial privado.

  10. Aplicación de la técnica de ruido electroquímico al estudio de pinturas comerciales de efecto barrera

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    Lanchas García-Zarco, Santiago

    2015-03-01

    Full Text Available Electrochemical noise is one of the methods of analysis used to interpret the phenomenon of corrosion. It has a number of advantages over other methodology types including its simplicity, its low cost and the fact that it does not disturb the system. This methodology appears to be effective together with other techniques in metal-electrolyte systems. In this case the technique is applied on its own on commercial anti-corrosion paints for which no information is available from other techniques. The main result of this study reveals the effectiveness of the noise resistance parameter, which had already been tested in the lab, when it is used to explain how the paint system behaves in industry.La medida e interpretación del Ruido Electroquímico (REQ es uno de los métodos de análisis utilizados para la interpretación del fenómeno de la corrosión. Presenta, frente a otros tipos de metodologías, una serie de ventajas como son su sencillez, bajo coste y el hecho de ser un método no perturbativo. Esta metodología se ha mostrado eficaz en el estudio de sistemas metal desnudo-electrolito combinada con otras técnicas de análisis. En este caso se aplicó al estudio de pinturas comerciales utilizadas en procesos de prevención de la corrosión de las que no se tenían otro tipo de información. Como principal resultado de este estudio se muestra la eficacia de la aplicación de la resistencia de ruido, ya verificada en ensayos a nivel de laboratorio, para explicar el comportamiento de sistemas de pinturas que actualmente se están utilizando en la industria.

  11. Comentario en el aula del poema «Al ruido del Duero» de Claudio Rodríguez

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    María Antonia MEZQUITA FERNÁNDEZ

    2009-11-01

    Full Text Available RESUMEN: En el siguiente artículo se tratará de reflejar la experiencia en un aula de Educación Primaria para acercar a los niños la figura de Claudio Rodríguez y centrarnos en un comentario de su poema «Al ruido del Duero». El colegio elegido es el «Arias Gonzalo», de Zamora. Los niños participaron activamente a la hora de aportar ideas y de comentar el texto. Claudio Rodríguez se sentía fascinado y profesaba un gran amor a su tierra, a sus costumbres y al río Duero. Consideraba que los valores más relevantes del ser humano eran la sencillez, la solidaridad y la fraternidad y deseaba unirse y fundirse, primero, con el entorno natural y, después, con los hombres. En mi opinión, la respuesta de los alumnos fue positiva, ya que captaron la esencia de los versos y demostraron, con su colaboración, que los elementos usados para motivarles habían servido. Lo dejaron patente en las cartas, dibujos y poemas que realizaron posteriormente.ABSTRACT: The following article will try to show a commentary on the poem «Al ruido del Duero» by Claudio Rodríguez, from Zamora. The school which was chosen is called «Arias Gonzalo»; it is in Zamora too. The pupils took part actively and their ideas contributed to comment the text. Claudio Rodríguez was fascinated and professed huge love for the place where he was born, the customs of his province and The Duero River. He believed that the most important human values were simplicity, solidarity and brotherhood. First of all, he wished to be bound to nature. As far as mankind is concerned, he always desired to be joined together. In my opinion, the pupils answered positively and they understood the essence of the verses. They all proved that the elements for motivating them were useful. Then, they showed it clearly by drawing pictures, writing letters and poems.

  12. Seguridad industrial y minera: Aspectos estratégicos para el control pasivo de ruido. // Industrial and mining security: estrategics aspects for the passive control of noise.

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    Luis Felipe Sexto

    2001-04-01

    Full Text Available El trabajo presenta una serie de aspectos medulares a tener en cuenta para atenuar el efecto de la contaminación sonora enambientes industriales. Propone un perfil de enfrentamiento que, en su conjunto, se ha dado en llamar Control Pasivo deRuido (CPR. Entre los elementos que se analizan están los descriptores de ruido necesarios, la determinación de lostiempos de exposición límites, el aislamiento de las vibraciones, el programa de control, la utilidad de las pantallas yencapsulamientos acústicos, , entre otros aspectos. Se exponen, con especial énfasis, los criterios para la selección efectivade los dispositivos para la protección auditiva. Además, se plantea un enfoque que vincula la estrategia de Control Pasivode Ruido como parte de una concepción más amplia que es considerada en la consecuente aplicación de una política demantenimiento eficaz. Tal relación constituye el punto de partida para asegurar la salud del personal, el buenfuncionamiento de los equipos, la seguridad operacional, y con ello, la disminución del alcance nefasto de la contaminaciónacústica en ambientes industriales.Palabras claves: Ruido, contaminación, mantenimiento, seguridad, salud, control pasivo._____________________________________________________________________AbstractThe work presents a series of important aspects to keep in mind in order to attenuate the effect of the sound contaminationin industrial environment. A confrontation profile is provided, which has been called Passive Control of Noise (CPR.Among the analyzed elements are: the determination of time exhibition limits, the vibration isolation, the utility of screensand acoustic capsule, the control program, and other aspects. With special emphasis are exposed the approaches for theeffective selection of the devices for auditive protection. An aproach is stated that links the strategy of Passive NoiseControl as part of a wider conception that is considered in the consequent application

  13. Medio militar y trastornos auditivos inducidos por ruido

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    Héctor Hernández Sánchez

    2013-01-01

    En el medio militar el personal se ve sometido a los más altos niveles de ruido; se considera que las detonaciones de las armas de fuego superan en intensidad a todos los ruidos industriales. Este trabajo pretende abordar los factores de riesgo y vulnerabilidad asociados a la exposición al ruido en el ambiente militar, los aspectos más actuales relacionados con la lesión auditiva inducida por ruido y su protección. Se realizó una revisión de los artículos más representativos mediante la base ...

  14. Contribución al diseño de lazos de realimentación electrónica para microsistemas electromecánicos (MEMS) resonantes: ruido de fase generado en lazos osciladores por sus realimentaciones

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    Malo Gomez, Javier

    2015-01-01

    En 1966, D. B. Leeson publicó el artículo titulado “A simple model of feedback oscillator noise spectrum” en el que, mediante una ecuación obtenida de forma heurística y basada en parámetros conocidos de los osciladores, proponía un modelo para estimar el espectro de potencia que cuantifica el Ruido de Fase de estos osciladores. Este Ruido de Fase pone de manifiesto las fluctuaciones aleatorias que se producen en la fase de la señal de salida de cualquier oscilador de frecuencia f_0. Desde en...

  15. Evolución de la normativa de ruido en los buques mercantes

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    Bermúdez Rodríguez, Francisco Javier

    2014-01-01

    Este proyecto fin de máster, va a realizar el estudio y posterior análisis de la evolución de la normativa de ruido a bordo de los buques mercantes. El período de estudio comprende desde el año 1981 (en el que la OMI fijó unos límites recomendados de ruido a bordo de los buques), hasta la actualidad (en que no sólo se intenta regular el ruido y las vibraciones en el interior del buque, sino también el ruido radiado en puerto y el ruido radiado al agua. ...

  16. Seguridad industrial y minera: Aspectos estratégicos para el control pasivo de ruido. // Industrial and mining security: estrategics aspects for the passive control of noise.

    OpenAIRE

    Luis Felipe Sexto

    2001-01-01

    El trabajo presenta una serie de aspectos medulares a tener en cuenta para atenuar el efecto de la contaminación sonora enambientes industriales. Propone un perfil de enfrentamiento que, en su conjunto, se ha dado en llamar Control Pasivo deRuido (CPR). Entre los elementos que se analizan están los descriptores de ruido necesarios, la determinación de lostiempos de exposición límites, el aislamiento de las vibraciones, el programa de control, la utilidad de las pantallas yencapsulamientos acú...

  17. Sensorineural hearing loss in high school teenagers in Mexico City and its relationship with recreational noise Las alteraciones auditivas de escolares adolescentes en la Ciudad de México pueden estar relacionadas al ruido recreativo

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    María del Consuelo Martínez-Wbaldo

    2009-12-01

    Full Text Available The aim of this study was to measure the frequency of hearing loss in a sample of typical public high-school students exposed to recreational noise, and determine associated risk factors. The sample was made up of 214 teenagers from a high-school in Mexico City; subjects were selected randomly per strata. We applied a questionnaire to identify risk factors for hearing loss and performed a battery of audiologic tests consisting of otoscopy, tympanometry, and pure-tone audiometry. The mean age of the sample was 16 ± 1.07 years; 73% were male and 27%, female. Hearing loss was found in 21% of students. The main hearing loss-related risk factor was exposure to recreational noise: frequent attendance at discotheques and pop-music concerts; use of personal stereos; and noise exposure in school workshops. The high frequency of hearing loss in high school students from one Mexico City school (nearly one fifth of the sample was found to be related to noise exposure mainly during recreational activities.El objetivo de este estudio fue medir la frecuencia de alteraciones auditivas en una muestra de escolares de educación media superior expuestos a ruido recreativo y determinar algunos factores de riesgo asociados. La muestra estuvo constituida por 214 adolescentes de una escuela de la Ciudad de México. Los sujetos fueron seleccionados al azar por medio de una computadora. Se aplicaron cuestionarios con el objeto de identificar los factores de riesgo para alteraciones auditivas y se les practicaron diversos estudios audiológicos consistentes en: otoscopía, timpanometría y una audiometría a tonos puros. La edad media de la muestra fue de 16 ± 1,07 años, 73% fueron del sexo masculino y 27% femenino. Se encontraron alteraciones auditivas en 21% de los estudiantes. Los principales factores de riesgo asociados a alteraciones auditivas fueron: exposición al ruido recreativo al asistir a discotecas, conciertos de música popular, el uso de equipos de

  18. Caracterización de la relación señal/ruido de los potenciales evocados auditivos de estado estable durante la promediación

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    Alejandro Torres

    2004-01-01

    Full Text Available El presente estudio evalúa las variaciones que ocurren en la relación señal/ruido de los potenciales evocados auditivos de estado estable (PEAee a Mf provocado por múltiples tonos simultáneos modulados en amplitud, durante la promediación a lo largo del tiempo. Específicamente, se describen en forma cuantitativa las variaciones de la amplitud de los PEAee a Mf, el ruido residual y los estadígrafos utilizados para la detección automática de las respuestas (T2 Hotelling y T2 Circular. Se estudiaron ocho sujetos adultos sanos utilizando el sistema AUDIX IE. En cada sujeto se obtuvieron 128 registros individuales de los PEAee a Mf. Cada registro individual o ventana de análisis tenía 8192 muestras digitalizadas a 1,37 ms, de manera que el tiempo total de registro fue de 23,9 min . Se utilizó como estímulo una mezcla de tonos de 0,5, 1, 2 y 4 kHz modulados en amplitud a frecuencias de 77, 85, 93 y 101 Hz para el oído izquierdo y de 81, 89, 97 y 105 Hz para el derecho respectivamente. El estímulo fue presentado biauralmente a través de audífonos suprauriculares (TDH - 49 a una intensidad cercana al umbral (20 dB nHl. Se encontró que la amplitud de los PEAee a Mf fluctúa inicialmente en forma variable y alcanza un valor estable a partir de la promediación de 20 registros. Por otra parte, el ruido residual decrece en forma monotónica siguiendo una relación cuadrática con el número de promediaciones. Ambos estadígrafos (T2C y T2H siguen un comportamiento similar y alcanzan valores significativos estables a partir de la promediación de 30 registros. Estas variaciones de la relación señal/ruido cumplen los supuestos implícitos en la promediación de manera que se afirma como válido este método para la extracción de los PEAee a Mf. Asimismo, la caracterización paramétrica realizada brinda información útil para el perfeccionamiento de la audiometría objetiva mediante PEAee a Mf.

  19. Diseño e implementación de un sistema de control activo de ruido (CAR desarrollado en tecnología FPAA

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    Jorge Enrique Mondragón Estupiñan

    2013-01-01

    Full Text Available Presenta el diseño e implementación de un sistema de Control Activo del Ruido (CAR en un sistema de arreglos análogos como controlador (FPAA. El principio de funcionamiento de esta metodología de control es el fenómeno de interferencia destructiva y superposición lineal de ondas; la idea es generar una señal idéntica a la señal de ruido que se desea cancelar, logrando atenuar el ruido que se propaga en el interior del entorno acústico. Para la validación de esta aplicación se construyó un prototipo experimental; durante las pruebas realizadas se lograron atenuar niveles de presión sonora en el orden de los 20 a 40 dB, dependiendo la frecuencia fundamental del ruido. El desarrollo de este proyecto es un aporte a la solución de problemas y a la generación de alternativas de bajo costo para la adquisición y adaptación tecnológica en el área de comunicaciones industriales y automatización industrial en la Universidad Francisco de Paula Santander-Colombia.

  20. Análisis de Ruido en Reactores PWR

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    Bermejo Piñar, Juan Antonio

    2015-01-01

    Esta tesis se ha llevado a cabo persiguiendo dos objetivos principales: uno de ellos es el desarrollo y la aplicación de modelos para el mantenimiento predictivo de sensores en centrales nucleares, y el otro es profundizar en el entendimiento de los fenómenos que tienen influencia en el ruido de la señal de los detectores de neutrones de los reactores de agua a presión con ayuda de herramientas de simulación 3D. Para el desarrollo de los trabajos se ha contado con medidas de ruido de reactore...

  1. Patología de la voz por ruido

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    Carmenza Gómez

    1988-01-01

    Full Text Available Con la hipótesis de que el ruido puede ser nocivo no solamente para el órgano de la audición sino también para el de la fonación, procedimos a estudiar un grupo de 50 trabajadores de un supermercado localizado en un área con alta exposición ambiental al ruido (Cooperativa Cafetera debido a su cercanía al antiguo aeropuerto de la ciudad de Medellín; el otro grupo, compuesto también por 50 Individuos, fue estudiado en el supermercado de Almacenes éxito de El Poblado que tiene baja exposición. Los participantes fueron escogidos al azar de listas de nómina. Se midió Intensidad total de ruido mediante dosimetrías y análisis de frecuencia en diferentes lugares de ambos sitios, durante varias horas del día, todos los días de una semana. En el supermercado expuesto se encontraron Intervalos de ruido de 98 a 105 decibeles (dBy las frecuencias acumuladas fueron superiores a 77 dB; en cambio, para el no expuesto estas cifras fueron 49 a 56, y 70 dB, respectivamente (P<0,0001 . No hubo variaciones Importantes durante las horas del día, ni de un día a otro. En la Cooperativa Cafetera los únicos eventos que producen ruido superior a 85 dB (considerado el máximo para evitar da no auditivo, son el paso de aviones, la sierra cortadora y el molino de carne. No hubo diferencia significativa en la patología otorrinolaringológica general entre los dos grupos. Se diagnosticó patología foniátrica en 8 casos en el grupo expuesto y en 1 en el no expuesto (P<0,05; ésto ayuda a confirmar que 70 dB es el limite superior de ruido ambiental permisible para evitar la ocurrencia de patología de la voz. Creemos que estos límites máximos para prevención de patología foniátrica deben ser definidos por ley y recomendamos varias estrategias para enfrentar el ruido ambiental.

  2. Riesgo higiénico por exposición al ruido en los profesionales de la música. Fuentes, daños y control de la exposición.

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    Labarga Navarro, Jose María

    2013-01-01

    El objetivo principal de este trabajo es el estudio de la incidencia del ruido como factor de riesgo higiénico en el colectivo de los músicos. Se estudiará el ruido como fenómeno físico, los efectos que el ruido puede causar en la salud de los trabajadores, los criterios higiénicos de valoración de la exposición, procedimientos de medida y métodos de control de la exposición. Se revisará la normativa vigente tanto nacional como europea, así como las recomendaciones de los ...

  3. Patología de la voz por ruido

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    Carmenza Gómez; Clara M. Casas; Juan Diego Botero; Jorge Puerta

    1988-01-01

    Con la hipótesis de que el ruido puede ser nocivo no solamente para el órgano de la audición sino también para el de la fonación, procedimos a estudiar un grupo de 50 trabajadores de un supermercado localizado en un área con alta exposición ambiental al ruido (Cooperativa Cafetera) debido a su cercanía al antiguo aeropuerto de la ciudad de Medellín; el otro grupo, compuesto también por 50 Individuos, fue estudiado en el supermercado de Almacenes éxito de El Poblado que tiene baja exposición. ...

  4. Evaluación del nivel de ruido de la Planta Piloto MELiSSA

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    Blanco Jurado, José

    2012-01-01

    El ruido es un problema al cual no se le da la importancia que merece, y es, de entre todos los peligros que tienen lugar en la industria, de los más comunes. Las actividades laborales de los trabajadores significan un mayor riesgo de trastornos, debido a la exposición a niveles más altos de ruido. La exposición a estos niveles o a una larga permanencia en un ambiente ruidoso puede causar disminución o deterioro importante de la capacidad auditiva y otros defectos fisiológic...

  5. Evaluación de ruido de un puesto de trabajo en una industria

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    Moran Ramos, Alejandro

    2014-01-01

    El presente documento recoge el trabajo final del máster de prevención de riesgos laborales, en el que se intentan aplicar algunos de los conocimientos alcanzados en estos estudios. Al haber tenido acceso a la utilización de un instrumento de medición de niveles de ruido, se ha optado por realizar una evaluación de ruido de un puesto de trabajo, de esta manera, además de la parte teórica, la evaluación incluye una parte eminentemente práctica debido a la utilización de este instrumento par...

  6. Planes Locales de Acción contra el Ruido

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    Ausejo Prieto, Miguel

    2010-01-01

    En este contexto, el GT-15 da continuidad al trabajo realizado en ediciones pasadas del Congreso Nacional del Medio Ambiente, abordando la problemática expuesta y contribuyendo a mejorar y facilitar el diseño de medidas de control y minimización del ruido en las ciudades. Todo ello, mediante la implementación de mecanismos en los que adquiera una especial relevancia la participación ciudadana y en los que se persiga, como máxima fundamental, la correcta conjunción de los distintos bienes jurí...

  7. Noise resistance applied to the study paints; Aplicacion de la tecnica de ruido electroquimico al estudio de pinturas comerciales de efecto barrera

    Energy Technology Data Exchange (ETDEWEB)

    Lanchas Garcia-Zarco, S.; Alfosin Perez, V.; Suarez Garcia, A.; Urrejola Madrinan, S.; Sanchez Bermudez, A.

    2015-03-30

    Electrochemical noise is one of the methods of analysis used to interpret the phenomenon of corrosion. It has a number of advantages over other methodology types including its simplicity, its low cost and the fact that it does not disturb the system. This methodology appears to be effective together with other techniques in metal-electrolyte systems. In this case the technique is applied on its own on commercial anti-corrosion paints for which no information is available from other techniques. The main result of this study reveals the effectiveness of the noise resistance parameter, which had already been tested in the lab, when it is used to explain how the paint system behaves in industry. (Author)

  8. Medición de los niveles de ruido ambiental en la ciudad de Santiago de Chile Environmental noise levels measurement of the city of Santiago, Chile

    OpenAIRE

    Usbeth Platzer M; Rodrigo Iñiguez C; Jimena Cevo E; Fernanda Ayala R

    2007-01-01

    Introducción. Un estudio realizado en Santiago en 1989, estimó que 1.300.000 personas estaban sometidas a niveles de ruido inaceptables por las normas internacionales. Considerando que no existen publicaciones sobre ruido ambiental realizadas por otorrinolaringólogos, y que el tema no ha sido revisado en los últimos 15 años, quisimos actualizar la información al respecto. Material y método. Se evaluó el ruido en lugares que afectan la rutina del ciudadano común, independiente de su profesión:...

  9. Estudio de la reducción del ruido aerodinámico de trenes de alta velocidad con pantallas acústicas

    OpenAIRE

    Romero Ibáñez, Arturo

    2011-01-01

    RESUMEN: Las fuentes de ruido aerodinámico se localizan en toda la altura del tren. Esto hace que pantallas acústicas que fueron diseñadas para ruido de rodadura, producido en la zona baja del tren, no sean efectivas frente al ruido aerodinámico. Para el estudio del comportamiento de las pantallas acústicas se ha elegido el Método de Elementos de Contorno, Se ha desarrollado un programa en Visual Basic basado en él, verificándolo con métodos analíticos y semiempíricos. Se han obtenido conclus...

  10. Evaluación del riesgo por exposición a ruido en el sector del ocio nocturno

    OpenAIRE

    Molinero Bolaño, Sergio

    2014-01-01

    El sector de la música y el ocio presenta una serie de características, que a nivel preventivo, lo convierten en un sector particular; y una de éstas, a mi modo de ver la principal, es la exposición al ruido. El creciente nivel sonoro emitido en clubes y discotecas, así como en conciertos, responde entre otros factores a la demanda del público asistente, a la potencia que el progreso tecnológico permite, a la concepción de a más ruido más rentabilidad empresarial, etc... Al ...

  11. Prevalência de sintomas auditivos e vestibulares em trabalhadores expostos a ruído ocupacional Prevalencia de síntomas auditivos y vestibulares en trabajadores expuestos al ruido ocupacional Prevalence of auditory and vestibular symptoms among workers exposed to occupational noise

    Directory of Open Access Journals (Sweden)

    Rosalina Ogido

    2009-04-01

    Full Text Available O objetivo do estudo foi estimar a prevalência de sintomas auditivos e vestibulares em trabalhadores expostos a ruído ocupacional. Foram analisados os prontuários de 175 trabalhadores com perda auditiva induzida por ruído, atendidos em um centro de referência de saúde ocupacional de Campinas, SP, de 1997 a 2003. As variáveis estudadas foram freqüência dos sintomas de hipoacusia, zumbido e vertigem. As associações com idade, tempo de exposição ao ruído e limiares auditivos tonais foram analisadas utilizando-se os testes estatísticos qui-quadrado e exato de Fisher. Foram relatados hipoacusia em 74% dos casos, zumbidos em 81% e vertigem em 13,2 %. Verificou-se associação entre hipoacusia e idade, tempo de exposição ao ruído e limiares auditivos tonais e entre vertigem e tempo de exposição ao ruído, não sendo encontradas outras associações significativas.El objetivo del estudio fue estimar la prevalencia de síntomas auditivos y vestibulares en trabajadores expuestos al ruido ocupacional. Fueron analizados los prontuarios de 175 trabajadores con pérdida auditiva inducida por ruido, atendidos en un centro de referencia de salud ocupacional de Campinas, Sureste de Brasil, de 1997 a 2003. Las variables estudiadas fueron frecuencia de los síntomas de hipoacusia, zumbido y vértigo. Las asociaciones con edad, tiempo de exposición al rudio y límites auditivos tonales fueron analizados utilizándose las pruebas estadísticas chi-cuadrado y exacto de Fisher. Fueron relatados hipoacusia en 74% de los casos, zumbidos en 81% y vértigo en 13,2%. Se verificó asociación entre hipoacusia y edad, tiempo de exposición al ruido y límites auditivos tonales y entre vértigo y tiempo de exposición al ruido, no siendo encontradas otras asociaciones significativas.The purpose of the study was to assess the prevalence of auditory and vestibular symptoms in workers exposed to occupational noise. There were examined medical records of 175

  12. Estudio de la validación, errores e incertidumbre en la elaboración de mapas de ruido.

    OpenAIRE

    Ausejo Prieto, Miguel

    2009-01-01

    La elaboración de un mapa de ruido es un proceso complejo para el que se requiere una gran cantidad de datos de distinta naturaleza, los cuales no siempre están disponibles. En el proceso de elaboración, intervienen muchos factores, simplificaciones, aproximaciones y desviaciones que contribuyen a la incertidumbre final del resultado. Un error en el resultado final del mapa de ruido provoca cálculos incorrectos de la cantidad de población expuesta, al igual que el diseño e implementación de p...

  13. Noise perception of the population living in the neighbourhood of the bay of Pasaia (Gipuzkoa Percepción del ruido por la población residente en el entorno de la bahía de Pasaia (Guipúzcoa

    Directory of Open Access Journals (Sweden)

    Itziar Aspuru Soloaga

    2004-12-01

    Full Text Available Background: Noise is an environmental pollution agent to which a high percentage of the urban population, as well as residents living around important sources of noise, are exposed.Methods: A cross-sectional study was carried out to measure the perception of noise of the residents living in the area of the bay of Pasaia (Guipuzkoa, Spain. 351 dwellings were randomly selected. A structured questionnaire was used to gather information about the respondent self-perception of annoyance and sensitivity to noise. The sound pressure levels were estimated using a model that took into account the main characteristics of the different sources of noise.Results: 37.5% of the sample reported to be annoyed by noise. The interviewees declared that the main sourceof annoyance was the traffic (60% followed by the activity in the harbour (24%. The annoyance attributed tonoise was not correlated with the estimated sound level, but with the level of sensitivity to this physical agent(r=0.36; pConclusions: The relationship among the degree of annoyance caused by noise, the sensitivity to noise, the sound levels and other social and demographic variables show a very interrelated and complex phenomenon. The fact that half of the population had taken any measure to protect them from noise could have mitigated the percentage of people that declare to be annoyed by noise.Fundamento: El ruido es un agente de contaminación ambiental al que esta expuesto un porcentaje elevado de la población urbana, así como la residente en el entorno de focos emisores importantes. La bahía de Pasaia es un entorno industrial y urbano degradado ambientalmente con importantes focos de ruido.Métodos: Se realizó un estudio transversal de percepción al ruido en el entorno de la bahía de Pasaia, en 351 viviendas seleccionadas al azar, utilizando un cuestionario estructurado que recogía información sobre la autopercepción de la molestia y sensibilidad al ruido. La medida de la exposici

  14. Revisión sobre la evidencia de la relación entre exposición profesional al ruido y efectos extrauditivos no cardio-vasculares Systematic review and evidence on occupational noise exposure and extra-auditory effects of no cardiovascular nature

    Directory of Open Access Journals (Sweden)

    Jerónimo Maqueda Blasco

    2010-03-01

    Full Text Available Trabajo de revisión que tienen como objetivo conocer el nivel de evidencia existente sobre los efectos extra-auditivos de la exposición profesional al ruido relacionados con: alteraciones bioquímicas, efectos neuro-piscológicos, salud reproductiva y accidentes de trabajo mediante el análisis sistemático de la producción científica publicada entre 1995 y 2008. La búsqueda de las referencias bibliográficas se realizó mediante términos "Major Topic"y "MeSH" para MEDLINE y términos "Decriptors" para OSH update. Se recuperaron un total de 370 referencias y se incluyeron en la revisión todos los estudios experimentales, estudios de cohortes y estudios casos control y aquellos estudios trasversales que cumplieron al menos con cinco de los nueve criterios que la declaración STROBE establece para los estudios observacionales. Fueron seleccionados para su revisión a texto completo un total de 35 artículos: 14 estudios experimentales, 2 estudios de cohortes, 6 estudios casos control, 12 estudios transversales y 1 estudio de validación. La asignación del nivel de evidencia se realizó de acuerdo a los criterios SIGN. La selección y revisión de los artículos se realizó mediante revisión por pares, los casos de discrepancia entre pares se resolvió mediante consenso. Encontramos un alto nivel de evidencia (1+ para influencia de la exposición profesional al ruido sobre el incremento de la secreción de cortisol y noradrenalina, fatiga y disminución del rendimiento, funciones cognitivas y memoria, disminución en la calidad del sueño, estrés e irritabilidad y percepción de malestar. Con un nivel de evidencia 2++ se relacionó la exposición profesional al ruido con la accidentalidad laboral. No encontramos unos resultados concluyentes para la determinación de la relación entre exposición profesional al ruido sobre la salud reproductiva. Existe una diversidad en los métodos utilizados para la evaluación de la exposici

  15. Niveles de ruido en la Unidad de Cuidado Intensivo Neonatal «CIRENA» del Hospital Universitario del Valle, Cali, Colombia

    Directory of Open Access Journals (Sweden)

    Diana Lorena Fajardo

    2007-12-01

    Full Text Available Introducción: Los recién nacidos de alto riesgo requieren tratamiento y cuidados especializados por lo que ingresan en un área exclusiva de la unidad de cuidados intensivos neonatal, Cirena, donde permanecen hospitalizados por largos períodos y son más vulnerables a la exposición de múltiples agresiones físicas y ambientales como el ruido que pueden influir negativamente en su situación clínica y evolución posterior.Objetivo: Determinar los niveles y fuentes de ruido en Cirena del Hospital Universitario del Valle, con el fin de plantear cuidados de enfermería que contribuyan al bienestar del recién nacido.Metodología: Es un estudio descriptivo prospectivo donde se cuantificó la intensidad sonora en diferentes áreas de la unidad, con un sonómetro digital; se identificaron las horas del día y las actividades relacionadas con el incremento de los niveles de ruido en Cirena, según estándares internacionales. El análisis estadístico se efectuó con el programa SPSS versión 11.5. Resultados: Se encontró que los niveles de ruido en Cirena están por encima de lo permitido; el valor máximo registrado fue 73.6 dB y el mínimo 46.5 dB; la principal fuente generadora de ruido fue el personal de la sala. Se requiere sensibilizar a todo el equipo de salud sobre la necesidad de aplicar estrategias para disminuir los niveles de ruido existentes y de esta manera favorecer la reducción del nivel de estrés de los niños hospitalizados.

  16. Vigilancia ocupacional del trabajador expuesto a alteraciones de la salud inducidas por ruido

    Directory of Open Access Journals (Sweden)

    Julio C. Guerrero Pupo

    2005-01-01

    Full Text Available Aborda un estudio donde se analiza que la sustentabilidad terrícola está en peligro por los problemas ambientales presentes, destacando, a nivel local el ruido. Señala que es "causa" de alteraciones a la salud en ciertos puestos de trabajo y que el proceso se puede esquematizar como un eje constituido por factor de riesgo-exposición -efecto. Argumenta que empleó el método epidemiológico. Plantea la vigilancia epidemiológica hombre - ambiente y los efectos auditivos y no auditivos inducidos por ruido. Concluye que el Estado anhela su control y que su mejor representante es el médico de la familia al formarse integralmente en varias disciplinas.

  17. La protección frente al ruido de los forjados proyectados por Eduardo Torroja en la E.T.S. de Arquitectura de la Ciudad Universitaria de Madrid

    Directory of Open Access Journals (Sweden)

    Díaz, C.

    2011-12-01

    Full Text Available This work presents and analyses the results of the acoustic measurements of insulation from airborne noise and impact noise in solid reinforced concrete slabs designed by Eduardo Torroja Miret and manufactured in the first half of the 1930s in the School of Architecture of the UPM Polytechnic University in Madrid, located in the Ciudad Universitaria in Madrid. The experimental values for the acoustic parameters: weighted apparent sound reduction index R’w and weighted normalised impact sound pressure level L’n,w are closely related with those predicted by the estimations in the calculation models in the European standards EN 12354 parts 1, 2:2000. An experimental reciprocity relation was obtained for the sum of the values of the apparent sound reduction index and the normalised impact sound pressure level.

    En este trabajo se exponen y se analizan los resultados de las mediciones acústicas del aislamiento acústico a ruido aéreo y a ruido de impactos de los forjados de hormigón armado macizo, proyectados por D. Eduardo Torroja Miret y fabricados en la primera mitad de los años 1930 en la Escuela Técnica Superior de Arquitectura de la UPM, situada en la Ciudad Universitaria de Madrid. Los valores experimentales obtenidos de los parámetros acústicos: índice ponderado de reducción acústica aparente R’w y nivel de presión acústica ponderado de impactos normalizado L’n,w están bien relacionados con los previstos por las estimaciones en los modelos de cálculo de las normas europeas EN 12354 partes 1, 2:2000. Se ha obtenido una relación experimental de reciprocidad para la suma de los valores del índice de reducción acústica aparente y el nivel de presión sonora de impactos normalizado.

  18. Estudio primera fase del mapa de ruido de Cartagena

    OpenAIRE

    Martínez Moreno, Carlos Alberto

    2015-01-01

    El proyecto de la Primera Fase del Mapa de Ruido de Cartagena, está contemplado como el primer estudio de tráfico rodado del municipio en la zona delimitada de Aglomeración, que conjunto con los diversos estudios y fases realizadas posteriormente, darán como resultado el mapa de ruido del Municipio global, así como los porcentajes de población afectada. En esta primera Fase nos hemos centrado en el estudio del ruido producido por el tráfico rodado en la zona delimitada. Escuela Técnica Sup...

  19. Algoritmos paralelos para la detección y corrección de ruido impulsivo y ruido gaussiano basados en lógica fuzzy

    OpenAIRE

    Súcar Segarra, Luis Beltrán

    2013-01-01

    Normalmente durante el proceso de adquisición o transmisión las imágenes digitales pueden corromperse mediante ruido. Un problema importante del procesamiento de imágenes es eliminar el ruido preservando algunas características como los bordes, texturas y detalles. Dos problemas comunes son el ruido gaussiano y el ruido impulsivo, los cuales son introducidos durante los procesos de adquisición y transmisión, respectivamente. Se han planteado muchos métodos para eliminar tanto el ruido gaussia...

  20. Cálculo del ruido en los circuitos telefónicos

    Directory of Open Access Journals (Sweden)

    Mauro Flórez C.

    2011-02-01

    Full Text Available Uno de los recursos estratégicos postmodernistas por excelencia es el espectro electromagnético, pero su potencialidad depende en alto grado de la atenuación de los ruidos bien sean de origen natural como artificial, si a lo anterior le sumamos el desarrollo acelerado de las telecomunicaciones en el mundo y en Colombia, como resultado de la liberalización del sector, se plantean nuevos y exigentes retos, como el de diseñar permanentemente redes dentro de un ambiente donde cada operador debe garantizar la compatibilidad al interior de su red y la compatibilidad con otras ajenas. Para evitar conflictos técnicos entre operadores y garantizar una buena calidad de los servicios a los usuarios, es de vital importancia, diseñar las redes de acuerdo con las normas establecidas sobre los niveles de ruidos aceptados, dependiendo del tipo de red. En este artículo se analiza el ruido en las redes teniendo en cuenta las exigencias de los organismos internacionales, sobre todo la UIT, para que sirva de base y de referencia a los ingenieros encargados actualmente de los diseños de redes, compra o fabricación de equipos de telecomunicaciones y especialmente de telefonía, esto es especialmente importante después del ingreso de Colombia a la Organización Mundial del Comercio, OMC, en virtud del cual estamos obligados a exigir y proporcionar equipos y servicios de acuerdo con las recomendaciones internacionales.

  1. Defensa en profundidad para la evaluación de riesgos laborales por ruido en termoeléctrica

    Directory of Open Access Journals (Sweden)

    Roani Ladislá Miranda Cuéllar

    2015-09-01

    Full Text Available Introducción: Las técnicas de evaluación de riesgos laborales se llevan a cabo por diferentes procedimientos, a través de las aplicaciones de métodos normativos del cumplimiento de los parámetros asociados con las mediciones de los umbrales de daño a la salud del hombre. Sin embargo, no se tienen en cuenta los principios básicos de seguridad, que incluyen las experiencias de buenas prácticas en industrias de altos requisitos de seguridad y disponibilidad. Objetivos: El objetivo de este artículo es proponer un método bajo el enfoque de defensa en profundidad para evaluar los riesgos laborales por ruido en la Central Termoeléctrica (CTE de 100 MW. Material y Métodos: Se aplicó la técnica de entrevistas a técnicos y especialistas en seguridad y salud del trabajo, así como tecnólogos para explorar los elementos que tomaban en cuenta en la evaluación de los riesgos laborales por ruido, y se realizó la consulta a especialistas para precisar los elementos que debían formar parte de los aspectos de seguridad de acuerdo al método propuesto. Además Se realizó la evaluación de los riesgos laborales por ruido de acuerdo a dos metodologías implementadas con anterioridad y la propuesta. Resultados: Se muestran de acuerdo a las tres metodologías. Se determinó que la generación de ruidos no es un aspecto significativo a tener en cuenta, para la metodología 1, se evidenció una dispersión del nivel sonoro, con tendencia estable a los valores máximos en determinadas áreas según la Norma Cubana de ruido, para la metodología 2 mientras que para la metodología 3, los aspectos de seguridad evaluados negativamente por cada escalón, son los que se requieren tomar medidas correctivas dirigidas a modificar los ítems calificados negativamente a positivos para elevar el nivel de seguridad. Conclusiones: La evaluación empleando escalones de defensa en profundidad aplicado a los riesgos laborales posibilita un análisis con el enfoque

  2. Ruido ambiental y paisaje sonoro.Sinergias en el medio urbano

    OpenAIRE

    Rodrigues Alves Monteiro, Carolina

    2013-01-01

    Dentro del ambiente sonoro urbano, habitualmente se evalúa el ruido ambiental a través de mapas de ruido, que se basan en mediciones y modelos predictivos. Los resultados ofrecidos por estas herramientas determinan las zonas de conflicto y la población afectada, lo que condiciona las directrices para la aplicación de los Planes de Acción contra el ruido. El enfoque de Paisaje Sonoro sugiere explorar ruido en su complejidad y su ambivalencia cambiando el foco hacia el sonido. Se consideran las...

  3. Solar Resource Mapping of AL Duqm Industrial Area

    Science.gov (United States)

    AL-Hatmi, Yousuf; Tan, C. S.; Al-Yahyai, Sultan al; Al-Badi, Abdullah

    2016-03-01

    The Sultanate of Oman has one of the highest percentages of potential solar radiation in the world, which puts it in an outstanding position to horde electricity generation plants through photovoltaic solar systems. Oman consists of 11 governorates, and each governorate is divided into many Willyiah, which are made up of small villages. Willyiah of Al Duqm is located in Al Wusta Governorate (19°39’42”N 57°42’17”E) in central-eastern Oman. This paper proposes the use of a monthly average hourly diffuse illuminance from meteorological data and from a Geographic Information System (GIS) to identify the best plots suitable for installing photovoltaic solar farms in the Al Duqm Industrial Area. Solar data collected in this study shows that the highest average annual solar radiation data recorded is 5,764 Wh/m2 in the Al Duqm area. Solar radiation data from 2000 to 2012 has been collected for further analysis. The Annual Energy Production (AEP) simulated using ArcGIS ranges between 6,028 Wh/m2 and 3,668 Wh/m2. This shows a very close estimation between simulation results and the data collected from the meteorological department in Oman.

  4. Adaptación del instrumento para evaluar la percepción del ruido ambiental en la zona urbana de Rioverde San Luis Potosí

    Directory of Open Access Journals (Sweden)

    José Manuel Romo Orozco

    2010-01-01

    Full Text Available Se aplicó la técnica estadística multivariante de análisis factorial al instrumento de López Barrio [1] que consta de 39 preguntas agrupadas en cinco temas principales: Satisfacción General, Satisfacción Residencial, Fuentes de Ruido, Molestias e Interferencias. Con la prueba se identificó una nueva agrupación de tres dimensiones: los tres factores resultaron confiables, lo que implica que localmente el instrumento de percepción de ruido original requiere modificarse, disminuyendo la cantidad de ítems y de constructos, a fin de obtener la misma información de una manera más clara y sencilla.

  5. Reducción de ruido en Imagen Portal mediante técnicas de Wavelet

    OpenAIRE

    González López, Antonio Francisco

    2015-01-01

    [ESP] En esta Tesis se ha estudiado la mejora de la calidad de la imagen portal, siendo el objetivo principal la reducción de ruido. La imagen portal se estudia en el dominio wavelet para comprobar en qué medida se asemejan sus propiedades estadísticas a las encontradas en imagen natural. El mismo estudio llevado a cabo sobre la imagen portal se realiza sobre el ruido de los sistemas de imagen portal. Posteriormente se prueban diversos métodos de reducción de ruido sobre imágenes portales. De...

  6. Mapas estratégicos de ruido 2ª fase. Estudio comparativo

    OpenAIRE

    Salinas Hilburg, Juan Carlos

    2013-01-01

    El presente proyecto tiene el objeto de realizar, analizar y evaluar un estudio comparativo de los Mapas Estratégicos de Ruido (MER), 2a Fase, de España y el resto de países europeos. Los objetivos principales del proyecto son: 1. Revisión de los mapas estratégicos de ruido realizados en España correspondientes a la segunda fase de la Directiva 2002/49/EC. Análisis comparativo de las metodologías y resultados obtenidos. 2. Revisión de los mapas estratégicos de ruido reali...

  7. Análisis de apps para la medición del ruido laboral

    OpenAIRE

    Mora Beneyto, María Pilar

    2014-01-01

    Actualmente existen muchas aplicaciones de medición de ruido disponibles para teléfonos móviles y ipad Iphone. Nuestro estudio se centra, en la elección de la mejor app que se adapte a las características de un sonómetro integrador clase 2. Dependiendo de las características del micrófono del modelo de Iphone será más exacta la medición de ruido. Por lo que se aconseja utilizar un accesorio en forma de micrófono para percibir mejor el ruido.

  8. Esquema basado en Wavelet para la reducción de ruido online en señales industriales

    Directory of Open Access Journals (Sweden)

    Antonio Cedeño Pozo

    2014-07-01

    Full Text Available En este trabajo se propone un esquema para la reducción de ruido gaussiano online basado en wavelet con ventanas deslizantes para ser utilizado en señales industriales. Este tipo de técnicas se utilizan cuando la señal debe ser tratada a medida que se obtienen las muestras, funcionalidad necesaria en aplicaciones con requerimientos de tiempo real, por ejemplo en sistemas SCADA. El algoritmo introducido en el presente trabajo se diferencia de algoritmos similares en que: en primer término utiliza una selección adaptativa del umbral basada en NeighShrink; adicionalmente reutiliza en lo posible los coeficientes wavelet calculados en pasos anteriores para el procesamiento de cada punto; finalmente utiliza la wavelet Haar en lugar de otros filtros de mayor complejidad computacional. Para la comprobación experimental del nuevo esquema se utilizó un conjunto de señales sintéticas introducido por Donoho y Marron, complementadas por señales adquiridas en procesos reales de plantas industriales. Las pruebas realizadas revelan que el algoritmo propuesto mejora la reducción de ruido online respecto a esquemas similares reportados anteriormente y es computacionalmente menos complejo.

  9. Restauración de Imágenes Médicas con Diferentes Tipos de Ruido

    OpenAIRE

    Sanchez, Guadalupe; Vidal Gimeno, Vicente Emilio; Verdú Martín, Gumersindo Jesús; Mayo Nogueira, Patricia; Ródenas Escribá, Francisco De Asís

    2013-01-01

    Las imágenes obtenidas por rayos X o computarizada tomografía computarizada (CT) en condiciones adversas, pueden estar contaminadas con ruido que puede afectar a la detección de enfermedades. Un gran número de técnicas de procesamiento de imágenes han sido propuestas para eliminar el ruido. Estas técnicas dependen del tipo de ruido presente en la imagen. En este trabajo, se propone un método para reducir el ruido gaussiano, impulsivo y speckle. Este filtro, llamado PGMFDNL c...

  10. Detección de rasgos en imágenes con ruido: Una aproximación con funciones LISA en procesos puntuales espaciales

    OpenAIRE

    Lorenzo Valentín, Gil

    2005-01-01

    En esta tesis doctoral se retoma un problema de interés real, como es la detección de agrupaciones de puntos -que denominamos rasgos- en imágenes digitalizadas, que se encuentran en compañía de otros puntos que no son de interés, a estos los denominamos ruido. Se pretende separar y clasificar. Las últimas aportaciones hechas en este campo, se dirigen a considerar ausencia de modelo de probabilidad que originó la distribución espacial de los puntos en la imagen, utilizándose distancias al k-és...

  11. Influencia del ruido shot en las prestaciones de los ecualizadores en banda-base en sistemas de transmisión digital por fibra óptica

    OpenAIRE

    Casadevall Palacio, Fernando José; Junyent Giralt, Gabriel; Agustí Comes, Ramon

    1985-01-01

    En este trabajo se analiza la influencia del ruido Shot en la mejora que introduce un ecualizador en las prestaciones de un sistema de transmisión digital con fibra multimodo. Se consideran dos tipos de estructura para el ecualizador: lineal y no-lineal. Los resultados muestran la degradación del valor de potencia óptica a la entrada del fotodiodo en función de la relación velocidad de transmisión respecto al ancho de banda de 3dB en potencia óptica de la fibra.

  12. Vivir con ruido en la Ciudad de México. El proceso de adaptación a los entornos acústicamente hostiles

    Directory of Open Access Journals (Sweden)

    Ana Lidia M. Domínguez Ruiz

    2014-01-01

    Full Text Available La propuesta que aquí se presenta es producto de una investigación doctoral antropológica recién concluida titulada “La naturaleza sonora de la vida urbana. Ruido, convivencia y conflicto por el espacio sonoro en la Ciudad de México”, cuyo objeto general de estudio ha sido el análisis del fenómeno del ruido más allá de su dimensión estética, es decir, como construcción social producto de la interrelación de factores espaciales, demográficos, psicológicos, culturales e históricos, definidos por el modo de vida urbano. En este marco de reflexiones, el análisis del proceso de adaptación en tanto fenómeno fundador de las relaciones ambientales constituye una prioridad, pues permite comprender los procesos de ajuste y desajuste entre el entorno urbano y sus habitantes. Específicamente, al hablar del ruido se pretende conocer las diversas maneras en que esta relación se ha desarrollado no sólo por vía de la atrofia sensorial, sino a través de diversas técnicas de construcción de la vida cotidiana, donde alcanzar la normalidad es una situación patológica de la vida en las grandes ciudades como México.

  13. Evaluación de riesgo higiénico por ruido. Cuerpo de bomberos

    OpenAIRE

    Romero, Alexander

    2012-01-01

    El ruido se ha descrito como un sonido sin calidad musical agradable o como un sonido no querido o no deseado, actualmente el ruido es un factor de riesgo presente en muchas actividades humanas generando, en algunos casos, daños graves a la salud auditiva de los expuestos, he aquí la importancia y necesidad de cualificarlo y cuantificarlo para identificar su potencial de daño, brindando elementos de juicio para la toma de decisiones permitiendo adoptar medidas preventivas y correctivas. El si...

  14. Ensayo de aislamiento acústico a ruido aéreo de los cerramientos exteriores y particiones realizados con paneles de madera

    Directory of Open Access Journals (Sweden)

    Pacios Álvarez, Antonia

    2007-06-01

    aislamiento acústico al ruido aéreo de elementos de fachada y fachadas y la Norma UNE EN ISO 140-4 para la medición in situ de aislamiento acústico a ruido aéreo de particiones interiores. Se ha empleado el método del aislamiento global para determinar el aislamiento acústico a ruido aéreo de fachadas completas sin hacer distinción entre los elementos que la componen.

  15. Análisis de ruido en áreas de la central termoeléctrica Habana. // Noise analysis in the Habana thermoelectrial power station areas.

    Directory of Open Access Journals (Sweden)

    L. Felipe Sexto

    2002-09-01

    Full Text Available El trabajo aborda los aspectos más significativos que se derivan de las mediciones de ruido efectuadas en áreas de laCentral Termoeléctrica Habana, en enero del 2000, realizando una caracterización del paisaje sonoro inherente a la sala demáquinas dónde se encuentran en explotación tres grupos de turbogeneradores de 100 MW cada uno. También se ofrecenlos resultados en otras zonas importantes de la planta. Se exponen las emisiones características de algunos equipos bajocondiciones de campo directo y reverberante. Además, se valoran algunos riesgos que afectan al personal expuesto y semencionan acciones necesarias para contrarrestar los efectos de la contaminación sonora. Entre los parámetros empleadospara la evaluación del ruido se hallan el nivel sonoro con ponderación AF, el nivel sonoro continuo equivalente, los valoresmáximo y mínimo, el análisis de frecuencias, el tiempo de exposición y el índice NR (noise rating curves. También, setratan criterios y recomendaciones dadas por ISO, EPA y NIOSH.Palabras claves: Ruido, contaminación, salud, turbogenerador, medición de ruido.___________________________________________________________________AbstractThe work approaches the most significant aspects that are derived from the conducted noise measurements in areas of theThermoelectrial Power station Habana, and a characterization of the inherent sonorous landscape in the engine room wherethree groups of turbogenerators of 100 MW each are in operation. Also the results in other important zones of the plant areoffered. The transmissions characteristic of some equipment under conditions of direct and reverberante field are exposed.In addition, some risks that affect the exposed personnel and actions necessary to resist the effects of the sonorouscontamination are mentioned. Between the parameters used for the noise evaluation are the sonorous level withponderación AF, the equivalent continuous sonorous level, the maximum and

  16. Exposição ao ruído tecnológico em cti: estratégias coletivas de defesa dos trabalhadores de enfermagem La exposición al ruido tecnológico en un centro de terapia intensiva: estrategias colectivas para la defensa de los trabajadores de enfermería Exposure to noise technology in an intensive therapy center: collective strategies for the defense of workers in nursing

    Directory of Open Access Journals (Sweden)

    Elias Barbosa de Oliveira

    2009-03-01

    Full Text Available Estudo descritivo com abordagem qualitativa que objetivou identificar e analisar as estratégias coletivas de defesa elaboradas pelos trabalhadores de enfermagem diante do ruído tecnológico em Centro de Terapia Intensiva (CTI. Participaram do estudo 25 trabalhadores de enfermagem de um hospital universitário situado no município de Niterói (RJ em 2004. Na coleta de dados, utilizou-se a entrevista semi-estruturada mediante um roteiro, e, no tratamento dos dados, a análise de conteúdo revelou os seguintes resultados: o ruído tecnológico gera incômodo e estresse. Para minimizar o sofrimento, os trabalhadores elaboram estratégias coletivas de defesa que os mantêm trabalhando. Conclui-se que as estratégias coletivas de defesa podem se caracterizar num fator que resulta em alienação, ocultando a compreensão real do contexto de trabalho. As ações preventivas e as mudanças a serem implementadas em relação ao ruído no CTI devem ser pautadas na participação dos trabalhadores e se reverterem em melhoria das condições de trabalho e bem-estar do grupo.Estudio descriptivo con un enfoque cualitativo diseñado para analizar las estrategias colectivas de la defensa elaboradas pelos trabajadores de enfermería frente al sonido tecnológico en un centro de terapia intensiva. Veinticinco profesionales de la enfermería de un centro de terapia intensiva del Hospital Escuela en Niteroi (RJ participaron en el estudio en 2004. Para la recolección de datos, una entrevista semi estructurada fue utilizada. Los datos fueron analizados a través de una análisis de contenido que mostraran los resultados: los trabajadores elaboran estrategias colectivas de defensa que permiten trabajar. Estas estrategias muestran un conocimiento que permite a los individuos seguir trabajando, ya que crea formas adaptativa para contrarrestar el sonido en el ambiente de trabajo, buscando continuamente ser sujetos de la situación de trabajo. Adicionalmente

  17. El asesinato de Carrero Blanco en la prensa: desinformación, ruido y silencio

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    Alfonso Pinilla García

    2008-12-01

    Full Text Available El artículo que presentamos pretende analizar las estrategias que utilizaron El Alcázar e Informaciones al tratar el asesinato de Carrero Blanco. Nos hemos centrado en los primeros números que salen a la calle tras el acontecimiento, poniendo especial atención en las informaciones existentes sobre las reacciones tras el atentado, o sobre la identidad de los autores. El análisis de estos temas nos ha permitido observar fenómenos como el ruido y el silencio en la transmisión de la información, cuestiones que nos ofrecen una interesante reflexión sobre la relación que existe entre la ideología de los medios y su percepción del mundo. Con el artículo, por tanto, ponemos de manifiesto dos talantes ante la crisis, dos talantes que están influyendo sobremanera en la percepción del acontecimiento histórico en los medios de comunicación. _____________________ABSTRACT:The article we present intends to analyse the strategies used by El Alcázar and Informaciones in dealing with the murder of Carrero Blanco. We have focused on the first issues that got out to the streets after the event, paying special attention to the existing news concerning the reactions after the assault or about the authors identity. The analysis of these subjects has allowed us to observe phenomena like the noise and the silence within the transmission of the information, issues that offered an interesting reflection on the relation that exists between the media ideology and its world perception. Through this article, therefore, we show two ways of acting in front of the crisis, two ways that are affecting the historical event perception in the media.  

  18. Entendiendo al escalamiento industrial y el trabajo, como potenciadores del desarrollo regional

    OpenAIRE

    Ricardo López Salazar

    2013-01-01

    Este documento se centra en analizar teóricamente al escalamiento industrial y el trabajo como dos elementos fundamentales en el tipo de desarrollo que se genera al interior de las regiones. La perspectiva utilizada resulta novedosa ya que se coloca al desarrollo como variable dependiente de la profundidad y tipo de escalamiento, así como de la calidad del trabajo generado por las empresas regionales. De esta manera, mientras más profundo sea el escalamiento de las empresas regionales, el tra...

  19. Análisis del ruido de ocio, propuesta de procedimientos y herramientas de gestión

    OpenAIRE

    Ballesteros Garrido, María Jesús

    2014-01-01

    El ruido derivado de las actividades de ocio es uno de los contaminantes acústicos más importantes en la sociedad actual. Este foco de ruido no sólo se encuentra presente en los entorno de los bares, pubs o discotecas, sino también en las zonas donde se desarrollan los eventos festivos de la ciudad. Sin embargo, son pocos los estudios y actuaciones llevadas a cabo desde el punto de vista ambiental que permitan conocer las principales características del ruido de ocio, los métodos de medida o ...

  20. Técnicas de reducción del ruido de conmutación en circuitos integrados CMOS

    OpenAIRE

    González Jiménez, José Luis

    1998-01-01

    El ruido de conmutación generado por los circuitos digitales representa un problema importante que a menudolimita las prestaciones de los circuitos integradosdigitales y mixtos. éste ruido de conmutación estápresente en los terminales de alimentación internos delos circuitos y es debido a la inductancia parásita quepresentan los terminales y conductores del encapsulado.Estos componentes inductivos transforman en ruido detensión la derivada temporal de los pulsos de corrientedemandados por la ...

  1. Diseño de anillo térmico para el Patrón Nacional de Ruido

    OpenAIRE

    Lozano Guerrero, Antonio; Diaz Morcillo, Alejandro; Fornet Ruiz, Jaime Jose; Monzón Cabrera, Juan; Pedreño Molina, Juan Luis; Clemente Fernández, Francisco Javier; Albero Ortiz, Antonio

    2012-01-01

    En ese trabajo se presentan los aspectos fundamentales de una parte fundamental del que será patrón nacional de ruido térmico: el anillo que realiza el contacto térmico entre los conductores interior y exterior en la parte superior de la línea coaxial del patrón de ruido. El objetivo de este dispositivo es mantener la misma temperatura en ambos conductores a la entrada del patrón y, asimismo, minimizar el efecto que pueda tener sobre la temperatura de ruido y el coeficiente de reflexión a la ...

  2. TiAlN and TiAlCN deposition in an industrial PaCVD-plant

    Energy Technology Data Exchange (ETDEWEB)

    Heim, D.; Hochreiter, R. [Ruebig GmbH, Co., Wels (Austria)

    1998-01-01

    An industrial PaCVD-plant was equipped with an AlCl{sub 3}-generator. By using Ar, H{sub 2}, N{sub 2}, CH{sub 4}, TiCl{sub 4} and AlCl{sub 3}, TiAlN- and TiAlCN-films could be deposited on hard metal and steel substrates. The plasma was generated by a DC-pulse power supply with frequencies up to 50 kHz. The reactor size was 350 mm in diameter and 900 mm in height. During one batch 1200 indexable inserts could be coated. The growth rates were about 1-3 {mu}m h{sup -1}. The deposited films show a fine structure and Cl-concentrations below 3%. The measured critical loads were between 30 and 40 N. Wear test results show an increase in tool life up to several 100% compared with uncoated or TiN-coated tools. (orig.) 7 refs.

  3. Estimación de la respuesta de sitio mediante el metodo del cociente espectral aplicado a ruido ambiental: aplicación a la Ciutat Vella de Valencia

    OpenAIRE

    FRANKLIN, R; Caselles Magallón, Josep Oriol; Canas Torres, José Antonio; Clapes Boixader, Jaime; Pujades Beneit, Lluís; M Navarro; F. García; Pérez Gracia, María de la Vega

    2006-01-01

    Dentro del proyecto de estudio de la vulnerabilidad sísmica de la Ciutat Vella de Valencia se ha estudiado la respuesta de suelo de esta y su afectación a los edificios de vivienda existentes. Debido a la baja sismicidad de la zona, las características urbanísticas y al bajo coste, la respuesta de suelo se ha calculado mediante el método del cociente espectral aplicado a ruido ambiente (técnica de Nakamura), que proporciona solamente los rangos de periodos, en los que se produce a...

  4. Metodología para la evaluación del impacto del ruido ambiental producido por la maquinaria en minería a cielo abierto

    OpenAIRE

    Simarro Cemborain, Alberto

    2015-01-01

    En muchos países el ruido se ha convertido en un gran problema para la salud de la población, no solo en el puesto de trabajo sino también durante la vida cotidiana. Este aumento en la contaminación acústica es producido en gran medida a la industrialización que se ha producido en estos países y a la mayor cercanía entre zonas industriales, zonas de ocio y zonas de descanso. La industria minera es una de las actividades industriales que más pueden contribuir al aumento de la contaminación acú...

  5. Uso de la Transformada de Ondeletas (Wavelet Transform en la Reducción de Ruidos en las Señales de Campo Eléctrico producidas por Rayos Use of the Wavelet Transform in Noise Reduction of the Electric Field Signals Produced by Lightning

    Directory of Open Access Journals (Sweden)

    Francisco Santamaría

    2012-01-01

    Full Text Available Se analiza el efecto del ruido en el cálculo de parámetros temporales de las señales de campo eléctrico producidas por los rayos empleando un procedimiento basado en la transformada de ondeletas (wavelet trasform para eliminación de ruido. Se emplearon señales registradas en Bogotá-Colombia las cuales fueron afectadas por el ruido producido por el conversor análogo digital, por el circuito electrónico y por el ruido ambiental. Se procesaron las señales de campo eléctrico para reducir el nivel de ruido presente en dichas señales usando transformada de ondeletas. La efectividad de la técnica propuesta se demostró al analizar loo principales parámetros de las señales de campo eléctrico, encontrando diferencias de hasta el 84% al comparar los parámetros de las señales originales respecto de las señales procesadas. En conclusión, la transformada de ondeletas es una técnica adecuada para la reducción del ruido de las señales de campo eléctrico de los rayos.The noise effect in determining the temporal parameters in lightning electrical field signals are analyzed using wavelet transforms for noise reduction. Signals recorded in Bogotá-Colombia which were affected by noise from the analog-to-digital converter, from the electronic circuito and from environmental noise were used. By using a wavelet based noise reduction procedure, electric field signals were processed and the level of noise in these signals was reduced. The effectiveness of the propssed technique was demonstrated by analyzing the main parameters of electric field signals, obtaining deviations up to 84% when parameters of the original signals were compared with the ones of the procesed signals. In conclusion, the wavelet transform represento an appropriate technique for reducing the noise of lightning electric field signals.

  6. Monitoreo de los niveles de ruido ambiental en el barrio el Poblado aplicando la técnica geoestadística del kriging poligonal

    Directory of Open Access Journals (Sweden)

    Sánchez A. Luís Hernán

    2011-11-01

    Full Text Available Este artículo contiene los resultados del monitoreo del ruido ambiental (RA sobre la franja horaria diurna (LEQD en los barrios El Poblado (14 muestras y Lalinde (2 muestras, del área urbana del municipio de Medellín. El muestreo fue realizado durante 7 días en el mes de julio de 2008 y la información fue evaluada en el Centro de Geoestadística de la Universidad Nacional de Colombia. El análisis estructural de la variable ruido ambiental se basó en la regionalización de 417 datos tomados en el área urbana del municipio de Medellín, para el proyecto "Mapas acústicos y de concentración de monóxido de carbono de los municipios del área metropolitana del valle de Aburrá". La estructura variográfica fue acoplada a un modelo cúbico con rango de influencia de 780 metros y una desviación estándar real de 4.45 dB(A, la cual representa el 97% de la varianza teórica o estadística. Con base en estos resultados, se estimó para el barrio El Poblado utilizando la técnica del Kriging Poligonal, el nivel de RA entre 65 y 69 dB(A con un error relativo del 4%, que permite considerar geoestadísticamente este nivel de ruido en la categoría de probado. Por otro lado, el nivel de RA estimado para el barrio Lalinde podría variar en el intervalo 66 y 74 dB(A, con un error relativo del 38%, categorizado como un nivel de RA Posible; este último resultado indica que no es suficiente una muestra para categorizar el nivel acústico. El nivel de RA máximo estimado permite considerar el barrio El Poblado en el estándar de RA (decreto 0627/2006 adecuado para un Sector C y apropiado para zonas con usos permitidos comerciales, como centros comerciales, almacenes, locales o instalaciones de tipo comercial, talleres de mecánica automotriz e industrial, centros deportivos y recreativos, gimnasios, restaurantes, bares, tabernas, discotecas, bingos, casinos.

  7. Prácticas de informática industrial: del C al C++

    OpenAIRE

    Mazaeda Echevarría, Rogelio; Fuente López, Eusebio de la

    2014-01-01

    Se trata de un esfuerzo por utilizar las primeras prácticas de la asignatura de Informática Industrial de la titulación de Grado en Electrónica Industrial y Automática para introducir conceptos de programación orientada a objetos en C++ partiendo de la base de que el alumno conoce los fundamentos de programación de ordenadores en lenguaje C, tal y como se enseña en la asignatura básica de Fundamentos de Informática. Se intenta una aproximación gradual al C++ desde el C, a partir de ejemplos p...

  8. Ruídos e barulhos na unidade neonatal Ruidos y sonidos en la unidade neonatal Noise and sounds in the neonatal unit

    Directory of Open Access Journals (Sweden)

    Maria Vera Lúcia Moreira Leitão Cardoso

    2010-08-01

    Full Text Available Objetivou-se identificar os fatores causadores de ruídos e mensurar os ruídos em decibéis na unidade neonatal. Estudo descritivo, desenvolvido numa instituição pública, Fortaleza-Ce. A coleta dos dados ocorreu nos turnos da manhã, tarde, noite de outubro/2004 a janeiro/2005. Os dados foram coletados mediante observação não participante, tendo registrado a medição dos ruídos em nível de pressão sonora, usando-se um decibelímetro. Os resultados apontaram o turno da manhã com níveis altos de ruídos e barulhos, principalmente, devido a conversas entre pessoas; jato d' água da pia para lavagem das mãos, com valor máximo de 80,4dB. No turno da noite, a troca de equipamentos apresentou valor máximo de 78.1dB. Concluí-se que o valor médio dos decibéis foi superior ao recomendado pela ABNT.Objetivamos identificar los factores causadores de los ruidos en la Unidad Neonatal y mensurar el nivel de ruidos en decibeles. Estudio descriptivo, desarrollado en una institución pública en Fortaleza-CE. La colecta de los datos ocurrió por la mañana, tarde y noche de octubre /2004 a enero/ 2005, a través de la observación no directa, además el registro se dió a través de la medición de los ruidos en nivel de presión sonora, por medio de un decibelímetro. Los resultados señalaron que el período de la mañana presentó niveles altos de ruidos, principalmente debido a la conversación entre las personas y al jato d´água de la pia para lavagen de las manos con valor máximo de 80,4dB. El cambio de equipamientos en el período de la noche presentó valor máximo de 78.1dB. Concluimos que el valor medio de los decibeles en la UN fue superior al recomendado por la ABNT.The purpose was to identify the causes of noise in the neonatal unit and measure its level in decibels. It is a descriptive study developed in a public institution in Fortaleza-Ceará. The data collection was conducted in the morning, afternoon and night periods from

  9. Evaluación de la susceptibilidad a la corrosión por picado del acero API 5L x42 expuesto a un ambiente con cloruros y CO2 mediante la técnica de ruido electroquímico

    Directory of Open Access Journals (Sweden)

    Rodríguez-Vanegas, N.

    2011-10-01

    Full Text Available The concentration of chloride ions and the partial pressure of CO2 play an important role in the degradation of low-carbon steels used for the construction of pipelines in oil and gas industry. In order to evaluate the susceptibility of carbon steel API 5L X42 to pitting corrosion electrochemical noise and linear polarization resistance measurements were carried out in aqueous solutions containing chloride ions and CO2. The concentration of chloride ions was varied between, 10000 and 18000 ppm, and the CO2 partial pressure between 10 psi and 18 psi. Experimental results pointed out that the formation of protective layer, consisting mainly of FeCO 3, depends on the partial pressure of CO2 in the system. Nevertheless, the stability of this layer was considerably affected by increasing the concentration of chloride ions causing that localized corrosion has taken place in some areas of the surface of API 5L X42, which were detected by electrochemical noise echnique.La concentración de iones cloruro y la presión parcial de CO2, tienen un papel importante en el proceso de degradación de los aceros de bajo carbono empleados en la construcción de líneas de transporte en industrias petroleras. Con el fin de evaluar la susceptibilidad del acero al carbono API 5L X42 a la corrosión por picado, se realizaron medidas de ruido electroquímico y resistencia a la polarización lineal en soluciones acuosas de iones cloruro con concentraciones entre 10.000 y 18.000 ppm, variando la presión parcial de CO2 entre 10 psi y 18 psi. Los resultados indican que la formación de una capa protectora, constituida principalmente por FeCO3, depende de la presión parcial de CO2 del sistema. No obstante, la estabilidad de dicha capa es afectada significativamente por el aumento de la concentración de iones cloruro, que producen fenómenos de corrosión localizada en algunas áreas de la superficie del acero API 5L X42, los cuales fueron detectados por la técnica de

  10. Noise reduction in steam-vent points at the Cerro Prieto geothermal field, BC; Reduccion del ruido en puntos de desfogue en el campo geotermico de Cerro Prieto, BC

    Energy Technology Data Exchange (ETDEWEB)

    Miranda Herrera, Carlos A [Comision Federal de Electricidad, Residencia General de Cerro Prieto, Mexicali, B.C (Mexico)]. E-mail: carlos.miranda02@cfe.gob.mx

    2008-01-15

    Steam silencers have been placed on the power units regulation system of the Cerro Prieto geothermal field, but not where the steam-pipes vent high-pressure steam (rupture disks). Moreover, the power-unit silencers are large and their abilities to reduce noise depend on an external, uncontrollable factor: pores sizes in the volcanic rocks they are made of. Thus a compact, economic and relatively easy to construct metallic silencer was designed to be used at several points of dry-steam venting to minimize the noise. The design was based on orifice-plate equations and a prototype was constructed and tested. It proved capable of reducing noise by 30 decibels for atmospheric discharges of primary steam at operating pressures. The size of the silencer can be adjusted to the particular needs of each vent case. [Spanish] En el campo geotermico de Cerro Prieto solo existen silenciadores de vapor en el sistema de regulacion de las plantas generadoras, pero no en los sitios de desfogue de vapor a alta presion en los vaporductos (discos de ruptura). Ademas, los silenciadores de las plantas son muy robustos y su capacidad de reduccion del ruido depende de un factor externo no controlable, como es el tamano del poro de la roca volcanica con el que estan construidos. Por lo tanto, se diseno un silenciador metalico compacto, economico y relativamente facil de fabricar, para utilizarse en diversos puntos de descarga de vapor seco a fin de minimizar el ruido. El diseno se realizo con base en las ecuaciones de la placa de orificio. Se construyo un prototipo cuyas pruebas demostraron que es capaz de reducir el ruido hasta en 30 decibeles, al descargar desde la presion de operacion de vapor primario hacia la presion atmosferica. Las dimensiones del silenciador pueden ajustarse a las necesidades particulares de cada caso de desfogue.

  11. Entendiendo al escalamiento industrial y el trabajo, como potenciadores del desarrollo regional

    Directory of Open Access Journals (Sweden)

    Ricardo López Salazar

    2013-08-01

    Full Text Available Este documento se centra en analizar teóricamente al escalamiento industrial y el trabajo como dos elementos fundamentales en el tipo de desarrollo que se genera al interior de las regiones. La perspectiva utilizada resulta novedosa ya que se coloca al desarrollo como variable dependiente de la profundidad y tipo de escalamiento, así como de la calidad del trabajo generado por las empresas regionales. De esta manera, mientras más profundo sea el escalamiento de las empresas regionales, el trabajo se beneficia con mejores capacitaciones y procesos de aprendizaje, aspecto que resulta crucial en el desarrollo de las regiones. Sin embargo, es preciso aclarar que en los países latinoamericanos y en especial en México, existen distorsiones que afectan la relación entre el escalamiento y el trabajo, por lo cual se deben de implementar una serie de medidas y políticas públicas dirigidas a potenciar los efectos del escalamiento sobre el trabajo y su repercusión en el desarrollo regional.

  12. Del ruido de la euforia al silencio del simulacro: Instrumentalización del carnaval en el norte de Chile (1929-1939 From the Sound of Euphoria to the Silence of the Simulacrum: Instrumentalization of the Carnival in the North of Chile (1929-1939

    Directory of Open Access Journals (Sweden)

    Jorge Said Barahona

    2011-12-01

    Full Text Available El siguiente artículo posee como objetivo principal analizar las diversas implicancias inferidas en la práctica ritual del carnaval durante un período de crisis económica, social y política (1929-1940. Considerando la contraposición entre la irracionalidad de la cultura popular y la racionalidad productiva de la cultura del libre mercado, en esa década se materializa en la práctica popular el rito carnavalesco, como manifestación de humor sarcástico y burlón, un clímax de euforia que provocaba atentados simbólicos en contra tanto de la autoridad como de los ídolos. Esto último convierte al carnaval en un suceso peligroso que debe mantenerse vigilado, normado y disciplinado. En relación con lo anterior, en esta investigación se analizará al carnaval como una herramienta de poder, la cual es instrumentalizada para desempeñar un rol de simulacro.The main objective of the following article is to analyze the implications inferred in the ritual practice of the carnival in a period of economic, social and political crisis (1929-1940. Considering the contraposition between the irrationality of popular culture and the rationality of the culture of the free market, in this decade the popular ritual of carnival will be materialized as an expression of sarcastic and mocking humor, a climax of euphoria that has caused symbolic attacks against both the authority and idols. This makes the carnival a dangerous occurrence that must be kept under surveillance, with rules and disciplines. In relation to the above, this research will analyze the carnival as an instrument of power, instrumentalized like a simulacrum.

  13. Aislamiento a ruido aéreo entre locales: estimación de la incertidumbre de medida

    OpenAIRE

    Pendán Rebollo, Borja

    2011-01-01

    Este documento trata de analizar la incertidumbre de medida asociada a la realización de un ensayo de aislamiento acústico a ruido aéreo entre locales. Para ello, se calcula la incertidumbre de medida que introduce cada una de las diferentes magnitudes medibles que definen los distintos índices de valoración de aislamiento a ruido aéreo entre locales. Previamente, se define el concepto conocido como incertidumbre de medida en líneas generales y se ilustra un ejemplo sencillo para que el lecto...

  14. Caracterización del cocleograma de ratón CBA en un modelo de ototoxicidad inducido por ruido

    OpenAIRE

    Sanz López, Lorena

    2013-01-01

    La pérdida auditiva inducida por ruido es la forma más frecuente de sordera adquirida, especialmente en sociedades industrializadas. Consiste en la exposición a sonidos de intensidad suficiente capaces de producir una pérdida auditiva temporal o permanente. Este efecto es acumulativo a lo largo de la vida, siendo actualmente la prevención la medida más efectiva contra este problema. El ruido puede dañar la mayoría de las poblaciones celulares de la cóclea pero las células ciliadas son la dian...

  15. Industry

    Energy Technology Data Exchange (ETDEWEB)

    Bernstein, Lenny; Roy, Joyashree; Delhotal, K. Casey; Harnisch, Jochen; Matsuhashi, Ryuji; Price, Lynn; Tanaka, Kanako; Worrell, Ernst; Yamba, Francis; Fengqi, Zhou; de la Rue du Can, Stephane; Gielen, Dolf; Joosen, Suzanne; Konar, Manaswita; Matysek, Anna; Miner, Reid; Okazaki, Teruo; Sanders, Johan; Sheinbaum Parado, Claudia

    2007-12-01

    This chapter addresses past, ongoing, and short (to 2010) and medium-term (to 2030) future actions that can be taken to mitigate GHG emissions from the manufacturing and process industries. Globally, and in most countries, CO{sub 2} accounts for more than 90% of CO{sub 2}-eq GHG emissions from the industrial sector (Price et al., 2006; US EPA, 2006b). These CO{sub 2} emissions arise from three sources: (1) the use of fossil fuels for energy, either directly by industry for heat and power generation or indirectly in the generation of purchased electricity and steam; (2) non-energy uses of fossil fuels in chemical processing and metal smelting; and (3) non-fossil fuel sources, for example cement and lime manufacture. Industrial processes also emit other GHGs, e.g.: (1) Nitrous oxide (N{sub 2}O) is emitted as a byproduct of adipic acid, nitric acid and caprolactam production; (2) HFC-23 is emitted as a byproduct of HCFC-22 production, a refrigerant, and also used in fluoroplastics manufacture; (3) Perfluorocarbons (PFCs) are emitted as byproducts of aluminium smelting and in semiconductor manufacture; (4) Sulphur hexafluoride (SF{sub 6}) is emitted in the manufacture, use and, decommissioning of gas insulated electrical switchgear, during the production of flat screen panels and semiconductors, from magnesium die casting and other industrial applications; (5) Methane (CH{sub 4}) is emitted as a byproduct of some chemical processes; and (6) CH{sub 4} and N{sub 2}O can be emitted by food industry waste streams. Many GHG emission mitigation options have been developed for the industrial sector. They fall into three categories: operating procedures, sector-wide technologies and process-specific technologies. A sampling of these options is discussed in Sections 7.2-7.4. The short- and medium-term potential for and cost of all classes of options are discussed in Section 7.5, barriers to the application of these options are addressed in Section 7.6 and the implication of

  16. EVALUACIÓN DEL RUIDO PRODUCIDO POR EL TRANSPORTE AUTOMOTOR EN LA CALLE HEREDIA DEL CENTRO HISTÓRICO DE SANTIAGO DE CUBA

    OpenAIRE

    Alejandro Francisco Fajardo-Segarra

    2013-01-01

    En el trabajo se exponen los resultados obtenidos en las mediciones de ruido realizadas en el Centro Histórico de la ciudad de Santiago de Cuba, específicamente en la calle Heredia. Se empleó el método de las mediciones para lo cual se utilizó como instrumento el sonómetro integrador. Se determinaron, además, los niveles de ruido por el método de pronóstico. Por último, se compararon los niveles de ruido obtenidos por ambos métodos y estos a su vez con la norma cubana NC 26:2007. Finalmente, ...

  17. Niveles de ruido y su relación con el aprendizaje y la percepción en escuelas primarias de Guadalajara, Jalisco, México.

    OpenAIRE

    Arturo Figueroa Montaño; M. G. Orozco Medina; N. E Preciado Caballero

    2012-01-01

    El ruido es un contaminante que afecta significativamente la calidad de vida y salud de las personas. La exposición a ruido sostenido y prolongado produce efectos negativos que van desde el orden fisiológico, cognitivo y emocional hasta la pérdida total de la audición. En Guadalajara, como en diversas ciudades del país y del mundo, un gran número de escuelas se ubican sobre avenidas transitadas, con importantes niveles de ruido ambiental que inciden en el desarrollo de las actividades de apr...

  18. Mejora de los datos de entrada en la realización de un mapa de ruido y sus efectos en la incertidumbre

    OpenAIRE

    Ausejo Prieto, Miguel; Asensio Rivera, César; Recuero López, Manuel; Pavón García, Ignacio

    2011-01-01

    Debido a la existencia de recomendaciones europeas que establecen valores por defecto ante la ausencia de datos en el proceso de realización de un mapa de ruido [1], se ha evaluado la influencia de aplicar dichos valores en un caso concreto como es el mapa estratégico de ruido de Palma de Mallorca. Se compararon los resultados de la simulación tras aplicar dichos valores por defecto con niveles de ruido obtenidos mediante medidas experimentales y se analizaron las desviaciones para determinar...

  19. Modelización de perfiles del ruido producido por vehículos en dispositivos moderadores de tráfico.

    OpenAIRE

    KAFFURE RUIZ, CARLOS AUGUSTO

    2014-01-01

    La siguiente propuesta de trabajo doctoral pretende continuar investigando sobre la variable ruido que ya ha sido estudiada por el doctorando en el trabajo final de máster titulado ¿Estudio experimental del ruido producido por vehículos en dispositivos moderadores de tráfico¿, tomando el ruido como una variable operacional para correlacionar la infraestructura y el entorno, aplicada en los moderadores de tráfico. Con el desarrollo de esta tesis doctoral se busca establecer una metodologí...

  20. Modelo auto-regresivo aplicado a la eliminación de ruidos de los mapas de anomalías de resistividad en fosfatos asociadas a bolsones estériles

    Directory of Open Access Journals (Sweden)

    Saad Bakkali

    2008-03-01

    Full Text Available Actualmente se emplean varios métodos para perfeccionar los bordes y contornos de mapas geofísicos. En Marruecos se realizó una prospección de fosfatos empleando el método eléctrico de resistividad; para ello se utilizó un dispositivo Schlumberger, cubriendo una superficie de 50 hectáreas, con el objetivo de detectar anomalías asociadas a bolsones estériles en los depósitos de fosfatos. Para la eliminación del ruido blanco se empleó un método basado en un modelo auto-regresivo (ARM, siglas en inglés; este se implementó por medio del algoritmo AutoSignal; el resultado muestra que el método ARM es efectivo para el filtrado, atenúa considerablemente el ruido producido por bolsones dispersos y de pequeño tamaño, además brinda una reducción considerable de la distorsión de la forma de la señal de resistividad original.

  1. Semi-industrial simulation of hot rolling and controlled cooling of Mn-Al TRIP steel sheets

    OpenAIRE

    A. Grajcar; P. Skrzypczyk; D. Woźniak; S. Kołodziej

    2013-01-01

    Purpose: The aim of the work is a semi-industrial physical simulation of thermomechanical rolling and controlled cooling of advanced high-strength steels with increased Mn and Al content.Design/methodology/approach: Four steels of various Mn and Nb concentration were thermomechanically rolled in 3 and 5 passes using a modern LPS line for physical simulation of hot rolling at a semi-industrial scale. The hot deformation course is fully automated as well as controlled cooling applied directly a...

  2. Evaluación del ruido en la unidad de cuidados intensivos neonatal

    Directory of Open Access Journals (Sweden)

    Alessandra Teixeira

    2011-12-01

    Full Text Available Introducción: Con los avances en la tecnología y la investigación llevada a cabo en neonatología, ya es posible ver más allá de lo que podamos para salvaguardar las vidas de recién nacidos (RN, proporcionando una calidad de vida. Para esto necesitamos tener una visión amplia que se ve más allá del individuo, el medio ambiente y el equipo que le rodea. Humanización debe impregnar todas las acciones tomadas en la Unidad de Cuidados Intensivos Neonatales (UCIN. Objetivo: En este contexto, el ruido ambiental emerge como un objeto de estudio de esta investigación tiene como objetivo identificar los niveles de ruido a que están expuestos los recién nacidos ingresados en una unidad específica de cuidados intensivos neonatales y discutirlos a la luz de las normas vigentes país. Materiales y Métodos: Teniendo en cuenta el tema de la parte delantera de esta investigación considera que es importante conocer la legislación que aborda este tema, específicamente el procedimiento estándar de Higiene Profesional Técnica (NHO 01 y la norma 15 (NR15. De acuerdo con la Norma 15 (NR 15 promulgado por el Ministerio de la Ordenanza N º 3214/1978 del Trabajo, actualizado por el Decreto 203/2011, el ruido que se clasifica como el impacto del ruido o el ruido continuo también llamado intermitente, que se caracteriza los picos de energía acústica de menos de 1 (un segundo a intervalos superiores a 1 (un segundo. Resultados: Comenzamos la presentación de los resultados que describen el campo de estudio, los resultados de la investigación discutidos a la luz de las normas vigentes en el país. Discusión y Conclusiones: La institución por área de estudio es un centro de referencia para cuidados intensivos neonatales de la micro-región de Barbacena recibe pacientes de varios lugares. De acuerdo con la Resolución del Directorio N º 7 (RDC 07 se clasifica como un nivel de unidad de cuidadosintensivos II(10. (Rev Cuid 2011; 2

  3. Multivariate distance: application to neutronic noise; Distancia multivariante: aplicacion al ruido neutronico

    Energy Technology Data Exchange (ETDEWEB)

    Blazquez, J.

    2015-07-01

    In a PWR type reactor, the neutron noise increases gradually its amplitude because of boron dilution. In a KWU type reactor, this phenomena is more intense and might cause to descend the operating power along the cycle. It is likely that this behavior will occur in the EPR prototype. Noise amplitude analysis is made in this work by using advanced statistics techniques, results are: criteria for the choice of the best sensor to be used in the Reactor Safety Logic; and early detection of sensor malfunctions. (Author)

  4. Multivariate distance: Application on neutronic noise; Distancia multivariente: Aplicacion al ruido neutronico

    Energy Technology Data Exchange (ETDEWEB)

    Blazquez, J.

    2014-07-01

    In this work are estimated coefficient of the moderator with the local instrumentation, which serves to control the phenomenon. Also it is noted that the amplitudes of the neutronic noise are not strictly Gaussian, because they are negatively biased and leptokurtics. Making use of the concept of multivariate distance what sounds are closer to a Gaussian along an axial column estimated. These analysis shed some light on the phenomenon, it is necessary to understand it from several points of view to find solutions. (Author)

  5. Identificación de fuentes de ruido en los sectores automovilístico y de la construcción

    OpenAIRE

    Ballesteros, José Antonio; Fernández, Marcos D.; Quintana Gómez, Samuel

    2015-01-01

    La identificación de fuentes de ruido es uno de los temas de actualidad en el campo de la acústica, ya que nos permite conocer las causas de la generación de ruido y atajar el problema en su raíz, actuando sobre aquellas zonas en las que la emisión de ruido es mayor. En el presente artículo se muestra la investigación sobre identificación de fuentes de ruido llevada a cabo en dos sectores distintos: el sector automovilístico y el sector de la construcción. En el sector automovilístico se h...

  6. CWPO of 4-CP and industrial wastewater with Al-Fe pillared clays.

    Science.gov (United States)

    Molina, C B; Zazo, J A; Casas, J A; Rodriguez, J J

    2010-01-01

    Catalysts based on pillared clays with Al-Fe have been synthesised from a commercial bentonite and tested for catalytic wet peroxide oxidation (CWPO) of aqueous 4-Chlorophenol (4-CP) solution and industrial wastewater from cosmetics manufacture. The effect of the synthesis procedure, the iron load and reaction temperature on the catalytic activity was studied using 4-CP as target compound. A lower temperature in the preparation of the pillaring solution, as well as a higher Fe load, gave rise to a higher catalytic activity, but also a higher leaching of the active phase. The best catalyst, in terms of catalytic activity, was also tested for treating cosmetic wastewater by CWPO. Experiments were carried out at 90 degrees C and atmospheric pressure and the influence of Fe load, catalyst concentration and H(2)O(2)/COD ratio (between 0.5 and 2 times the stoichiometric ratio) were analysed. Higher values of these parameters favour COD reduction. The Fe leaching in all cases was lower than 1.2 mg/L, indicating that these catalysts have a high stability under these experimental conditions. PMID:20389016

  7. Ventajas del análisis Wavelet sobre el análisis de Fourier para la interpretación del ruido electroquímico

    Directory of Open Access Journals (Sweden)

    Espada, L.

    2003-12-01

    Full Text Available Given its simplicity and low cost compared to other types of methodologies, the measurement and interpretation of Electrochemical Noise, is consolidating itself as one of the analysis methods most frequently used for the interpretation of corrosion. As the technique is still evolving, standard treatment methodologies for data retrieved in experiments do not exist yet. To date, statistical analysis and the Fourier analysis are commonly used in order to establish the parameters that may characterize the recordings of potential and current electrochemical noise. This study introduces a new methodology based on wavelet analysis and presents its advantages with regards to the Fourier analysis in distinguishing periodical and non-periodical variations in the signal power in time and frequency, as opposed to the Fourier analysis that only considerers the frequency.

    Por su sencillez y bajo coste frente a otros tipos de metodologías, la medida e interpretación del Ruido Electroquímico, REQ, se está consolidando como uno de los métodos de análisis más utilizados para la interpretación del fenómeno de la corrosión. Al ser una técnica en desarrollo, no existen todavía metodologías estandarizadas de tratamiento de los datos obtenidos en los experimentos. Hasta la fecha, se suelen utilizar el análisis estadístico y el análisis de Fourier para establecer parámetros que puedan caracterizar a los registros de ruido electroquímico de potencial e intensidad. En este trabajo se introduce una nueva metodología basada en el análisis Wavelet que presenta las ventajas, respecto del análisis de Fourier, de poder distinguir variaciones periódicas y no periódicas de la potencia de la señal tanto en el dominio del tiempo, como en el de la frecuencia, y no sólo en el dominio de la frecuencia como ocurre en el caso del análisis de Fourier.

  8. Índices de ruido urbano en el día sin carro en la ciudad de Medellín

    Directory of Open Access Journals (Sweden)

    Jeiser Rendón

    2010-12-01

    Full Text Available Con el presente artículo se pretende descubrir, a través de mediciones de ruido ambiental y datos de flujo vehicular, el cambio del paisaje sonoro en la ciudad de Medellín durante la implementación del día sin carro del día jueves 22 de abril de 2010; para lo que se tuvo como referencia cuatro puntos significativos de la ciudad: Monterrey, Alpujarra, Avenida Ferrocarril y la calle 33. Para el proceso de adquisición de datos se realizaron mediciones, tanto en el día sin carro, como en un día con carro, teniendo como fundamento la Resolución 0627 de 2006 “Mediante la cual, se establece la norma nacional de emisión de ruido y ruido ambiental” y la ISO 1996 “Norma internacional que contiene la descripción, medición y la evaluación de ruido ambiental”. Fue importante en esta investigación constatar la incidencia de los automóviles particulares en los niveles de ruido urbano que posee la ciudad, analizando las mediciones obtenidas este día, y encontrando congruencias funcionales entre el ruido urbano y los automóviles.

  9. Efecto de la exposición a ruido en entornos laborales sobre la calidad de vida y rendimiento Effects of noise exposure in working places on quality of life and performance

    Directory of Open Access Journals (Sweden)

    Ordaz Castillo Elena

    2009-09-01

    Full Text Available Objetivos: La exposición laboral a ruido origina efectos sobre la salud de carácter no auditivo. El objetivo de este estudio es estimar la asociación entre exposición a ruido en entornos laborales y la aparición de alteraciones en la conducta, rendimiento y síntomas psicosomáticos. Metodología: Estudio de prevalencia a partir de datos de la VI Encuesta Nacional de Condiciones de Trabajo analizando como variable independiente la exposición a ruido y como variables dependientes los "síntomas que manifiesta el trabajador" tratados de forma individual o por grupo de síntomas según su naturaleza: conductual, psicosomáticos y rendimiento. La asociación entre exposición y efecto se analizó mediante la prueba de X² y se calculó el OR de prevalencias ajustado por ritmo de trabajo (IC95% para medir la asociación entre "exposición a ruido" y grupos de síntomas de forma cruda en el conjunto de la población y de forma estratificada por ramas de actividad. Resultados: El 36,5% de la población trabajadora está expuesta a ruido en su puesto de trabajo. Se observa una mayor prevalencia de los grupos de síntomas conductuales, psicosomáticos y de rendimiento (pAims: Occupational noise exposure could produce extra-auditory effects. The purpose of this study was to investigate whether occupational noise exposure can influence human behaviour, performance and development of psychosomatic symptoms. Methodology: Cross-sectional study, from the Data-base of Spanish VI National Survey on Working Conditions, "noise exposure" has been analyzed as independent variable and: "symptoms self-reportered by workers" as effect variable, considering them independently or grouped variables in behavioural, psychosomatic and performance symptoms. The relationship between exposure and effect was analyzed by X2 test. Prevalence adjusted Odds Ratio by work rhythm (95% CI, were estimated to measure the association between perceived noise annoyance and grouped

  10. El Gran Ruido de 1687. Paradojas aparentes de la crítica ilustrada neogranadina

    OpenAIRE

    Silva, Renán

    2013-01-01

    El Papel Periódico de Santafé de Bogotá (1791-1797), el primer periódico impreso estable del Nuevo Reino de Granada, fue el escenario de una interesante polémica sobre un las explicaciones de fenómeno físico ocurrido más de un siglo antes (un «ruido y un olor» difíciles de explicar, que recorrieron la ciudad una noche de 1687) y que en su época conmovió a los habitantes, hasta el éxtasis religioso. Contrastar dos «miradas» ilustradas sobre el fenómeno puede ser importante, para conocer alguna...

  11. Oxide Dispersion Strengthened Fe(sub 3)Al-Based Alloy Tubes: Application Specific Development for the Power Generation Industry

    Energy Technology Data Exchange (ETDEWEB)

    Kad, B.K.

    1999-07-01

    A detailed and comprehensive research and development methodology is being prescribed to produce Oxide Dispersion Strengthened (ODS)-Fe3Al thin walled tubes, using powder extrusion methodologies, for eventual use at operating temperatures of up to 1100C in the power generation industry. A particular 'in service application' anomaly of Fe3Al-based alloys is that the environmental resistance is maintained up to 1200C, well beyond where such alloys retain sufficient mechanical strength. Grain boundary creep processes at such high temperatures are anticipated to be the dominant failure mechanism.

  12. Simulación de ruido de tránsito automotor como herramienta para el rediseño de rutas de transporte público colectivo en el municipio de Medellín Simulation of road traffic noise as a tool for redesigning public transport routes in the municipality of Medellín

    OpenAIRE

    Carlos Alberto Echeverri; Diego Mauricio Murillo; Germán Mauricio Valencia

    2011-01-01

    Este artículo presenta parte de los resultados del estudio "Metodología de rediseño de rutas de transporte público colectivo complementarias al sistema integrado de transporte en el Valle de Aburrá", realizado y financiado por las universidades de Medellín y San Buenaventura. Se enfoca en la simulación del ruido de tránsito automotor como una herramienta de análisis para la toma de decisiones en la conversión de algunas rutas radiales de transporte colectivo público a rutas diametrales o de f...

  13. Revisión sistemática y evidencia sobre exposición profesional a ruido y efectos extra-auditivos de naturaleza cardiovascular Systematic review and evidence on occupational noise exposure and extra-auditory effects of cardiovascular nature

    OpenAIRE

    Rosana Cortés Barragán; Jerónimo Maqueda Blasco; Elena Ordaz Castillo; Ángel Asúnsolo del Barco; Agustín Silva Mato; Eva Bermejo García; María Fe Gamo González

    2009-01-01

    Trabajo de revisión que tiene como objetivo conocer el nivel de evidencia existente sobre los efectos cardiovasculares debidos a la exposición profesional al ruido, mediante el análisis sistemático de la producción científica publicada entre 1995 y 2008. La búsqueda de las referencias bibliográficas se realizó mediante términos "Major Topic" y "MeSH" para MEDLINE y términos "Decriptors" para OSH update. Se recuperaron un total de 236 referencias y se incluyeron en la revisión todos los estudi...

  14. Evolución y análisis de la normativa de ruido en buques mercantes

    OpenAIRE

    Bermúdez Rodríguez, Francisco Javier; Hernández Molina, Ricardo; Cueto-Ancela, José Luis; Muñoz Rubio, Aurelio; Fernández Zacarías, Francisco

    2013-01-01

    Este estudio pretende describir la evolución de la normativa de ruido de los buques mercantes en las últimas cuatro décadas y a analizar sus aspectos más importantes en relación con las tripulaciones, pasaje y población expuesta en las ciudades, siguiendo los requerimientos de la Unión Europea para la reducción del impacto ambiental de los medios de transporte.

  15. Vigilancia Paramétrica de la Bilinealidad de Transmisores de Presión por Análisis de Ruido Parametric Surveillance of Pressure Transmitters Bilinearity through Noise Analysis

    Directory of Open Access Journals (Sweden)

    Cristina Montalvo

    2010-01-01

    Full Text Available El objetivo del presente trabajo es detectar la no linealidad asociada al comportamiento de un transmisor de presión capacitivo tipo Rosemount, cuando éste sufre pérdidas de aceite. La metodología propuesta consiste en suponer un comportamiento dinámico bilineal. Se simula la respuesta tanto del transmisor como de su línea sensora a una excitación de tipo ruido blanco y se trata la señal de medida aplicando modelos autorregresivos univariantes. Se plantea la simulación introduciendo el empleo de dos familias de coeficientes autorregresivos para reproducir la bilinealidad, no considerando la ecuación estocástica asociada a la excitación por ruido blanco. A partir de los resultados se ha definido un índice de vigilancia paramétrica para complementar la medida del tiempo de respuesta del sensor, ya que dicho tiempo no es la magnitud adecuada para detectar la bilinealidad.The aim of this work is detecting the non linearity associated to a Rosemount capacitive transmitter when it suffers oil loss syndrome. The proposed methodology to characterize the non-linearity consists of assuming bilinear dynamic behaviour. The transmitter and sensing line response to a driven white noise is simulated and the signal is treated applying univariant autoregressive models. As a new approach, the simulation is achieved introducing the use of two autoregressive coefficients families to reproduce the bilinearity, omitting the stochastic equation associated to the driven white noise. Base on the analysis of the results, a parametric surveillance index is defined to complement the measurement of the response time, as this time is not the appropriate quantity to detect the bilinearity.

  16. Seguimiento de la corrosión de la aleación AA2024 en disoluciones de NaCl mediante la medida del ruido electroquímico

    Directory of Open Access Journals (Sweden)

    Aballe, A.

    1998-05-01

    Full Text Available The behaviour of the AA2024 alloy against corrosion in 3.5 % NaCl solution has been monitored. In this environment the alloy can be easily damaged under small anodic polarizations. Linear polarization, electrochemical impedance, spectroscopy and electrochemical noise meassurement have been used as experimental techniques. Data from ENM have been analized using statistical parameters and Chaos Theory. The results here obtained suggest that ENM is particularly useful to monitor systems that can be modified using other electochemical techniques.

    Se ha realizado un seguimiento del comportamiento frente a la corrosión de la aleación AA2024 en disolución acuosa de NaCl al 3,5 %, medio en el cual esta aleación es muy sensible a la acción de pequeñas polarizaciones anódicas. El estudio se ha llevado a cabo utilizando diferentes técnicas electroquímicas: polarización lineal (PL, espectroscopia de impedancia electroquímica (EIS y medida del ruido electroquímico (ENM. Los datos obtenidos mediante esta última técnica se han analizado utilizando parámetros estadístiscos y conceptos relacionados con la Teoría del Caos. Los resultados obtenidos ponen de manifiesto que el registro de ruido electroquímico puede resultar de gran utilidad para el seguimiento de sistemas, como el aquí estudiado, susceptibles de ser modificados al aplicar otras técnicas electroquímicas.

  17. Semi-industrial simulation of hot rolling and controlled cooling of Mn-Al TRIP steel sheets

    Directory of Open Access Journals (Sweden)

    A. Grajcar

    2013-03-01

    Full Text Available Purpose: The aim of the work is a semi-industrial physical simulation of thermomechanical rolling and controlled cooling of advanced high-strength steels with increased Mn and Al content.Design/methodology/approach: Four steels of various Mn and Nb concentration were thermomechanically rolled in 3 and 5 passes using a modern LPS line for physical simulation of hot rolling at a semi-industrial scale. The hot deformation course is fully automated as well as controlled cooling applied directly after finishing rolling. Temperature-time and force-energetic parameters of hot rolling were continuously registered and assessed.Findings: The applied line consisting of two-high reversing mill, roller tables with heating panels, cooling devices and controlling-recording systems reflects industrial hot strip rolling parameters sufficiently. Reduction values and temperature-time regimes are similar to those used in industrial practice whereas strain rate is limited to about 10 s-1 what requires taking into account during comparison. All the steels investigated have high total pressure forces due to the high total content of alloying elements. The critical factor making it possible to obtain high-quality sheet samples with a thickness up to 3.3 mm is applying isothermal heating panels which decrease a cooling rate of thin sheets.Research limitations/implications: The real complete simulation of hot strip rolling requires extension of a used line with a further module for simulation of continuous finishing rolling stages. The work is in progress.Practical implications: The results can be successfully utilized in industrial hot rolling and controlled cooling practices after necessary modifications.Originality/value: The efficient semi-industrial physical simulation of hot strip thermomechanical rolling of some new model AHSS grades containing increased Mn and Al content as well as Nb microadditions was presented.

  18. Lifetime modelling for MCrAlY coatings in industrial gas turbine blades

    Directory of Open Access Journals (Sweden)

    Krukovsky Pavel

    2004-01-01

    Full Text Available A novel theoretical and experimental approach for lifetime modelling of MCrAlY coatings for stationary gas turbines has been undertaken using the Inverse Problem Solution (IPS technique. With this technique feasible experimental data acquired after a defined experimental time t e are used as input values for the model parameters estimation. In the first stage of the approach a model, based on the oxidation and diffusion processes (Fick's first and second law was assumed, which considers the Al concentration profile across the coating. The measured average Al concentration profiles in the two-phase g+b and g - regions of coating as well as base metal were used as input values for the model parameters estimation and calculational prediction of the long term diffusion and oxidation behavior of the coating was performed. The time, when the b-NiAl phase is completely consumed was assumed as the coating lifetime end. Exposure experiments were carried out with a NiCoCrAlY coating (200 micron thickness with 8% Al in air at 900 °C and 950 °C, currently up to 10000 h. The oxide scale is growing continuously and no other oxides were observed. The average and b-NiAl phase concentration profiles of Al across the coating thickness were determined by electron microprobe and image analysis systems in the initial state after 700 and 10000 h of oxidation. The concentration profile measured after 700 h was used as input values for the model parameters estimation in order to calculate the Al and b-NiAl phase concentration profiles after 10000 h. The computational forecast for 10000 h at 950 °C and 900 °C are in good agreement with the measured data. The approach was applied for NiCoCrAlY (200 micron thickness coating lifetime modelling at 950 °C and 900 °C as well as for different coating thicknesses at 950 °C.

  19. Energy industry affected by the climate change; Energiewirtschaft als Betroffener des Klimawandels

    Energy Technology Data Exchange (ETDEWEB)

    Rothstein, B. [ElfER, Electricite de France, R et D (France)

    2007-07-01

    The climate change affects not only the production, transmission, distribution and demand of electricity, but also the energy services and energy trade. Under this aspect, within the scope of the meeting '1. Kufstein Energy Symposium - Energy industry vs energy intensive industry - recognition of trends', held between May 22nd and May 24th, 2006, at the University of Applied Sciences in Kufstein (Austria), the author of the contribution under consideration reports on aspects concerning the consternation of the electric power industry in the Federal Republic of Germany according to the production, transmission and demand of electricity. In the following three chapters, the author reports on the consternation due to (a) the demand of cooling water at thermal power stations and changed possibilities of transportation of inland navigation; (b) atmospheric effects on existing power mains; (c) changed energy demand at extreme heat events. The consternation of the electric power industry is multi-layered.

  20. Modelo de regresión de Cox de la pérdida auditiva en trabajadores expuestos a ruido y fluidos de mecanizado o humos metálicos Cox regression model of hearing loss in workers exposed to noise and metalworking fluids or welding fumes

    Directory of Open Access Journals (Sweden)

    J.C. Conte

    2010-04-01

    Full Text Available Fundamento. Los trabajos sobre pérdida auditiva laboral se han centrado clásicamente en el estudio del ruido como causa principal. En la rama del metal es muy común la presencia de contaminantes físicos y químicos. En este artículo se analizan ambos junto con ciertos hábitos personales, con la finalidad de ver su influencia conjunta en la pérdida auditiva laboral. Material y métodos. Se analiza una muestra de 558 trabajadores mediante regresión de Cox con una finalidad explicativa. Se define el carácter de las relaciones causa-efecto existentes entre las variables consideradas, con respecto a tres situaciones: sano/alterado; recuperable/no recuperable; sin caídas en conversacionales/con caídas en conversacionales. Resultados. El análisis refleja que los fluidos de mecanizado, en presencia de ruido, retrasan la adquisición de los diversos grados de alteración auditiva; efecto contrario al que producen los humos metálicos, que adelantan la adquisición de dichos estadios. El hábito de fumar se reconoce como influyente en la adquisición de un trauma acústico inicial; la exposición a ruido extralaboral influye en la adquisición de un trauma acústico avanzado; y por otro lado, los equipos de protección auditiva son protectores del ruido pero no de la ototoxicidad de los humos metálicos. Conclusión. Se pone de manifiesto el efecto antagónico de los fluidos de mecanizado y el sinérgico de los humos metálicos frente al ruido, explicando la variación temporal en la evolución de la alteración auditiva, relacionada con estas atmósferas; se comprueba la influencia del tabaco y del ruido extralaboral, en la adquisición del trauma acústico.Background. Works on labour-related hearing loss have traditionally been centred on the study of noise as the principal cause. The presence of physical and chemical pollutants is very common in the metalworking branch. This article analyses both, together with certain personal habits, with

  1. PENERAPAN AKAD WAKALAH BI AL-UJRAH DALAM INDUSTRI ASURANSI DAN LEMBAGA KEUANGAN SYARIAH LAINNYA

    Directory of Open Access Journals (Sweden)

    Deni Purnama

    2012-06-01

    Dalam praktiknya, penerapan akad wakalah bi al-ujrah di perusahaan asuransi di mana dana premi yang masuk dalam asuransi syariah masih merupakan dana peserta setelah dikurangi fee perusahaan atas jasa pengelolaan. Ketika terjadi klaim, perusahaan tidak mengeluarkan dana untuk klaim tersebut dari kas perusahaan, tetapi dari diambil dari dana tabungan peserta (tabarru‟, sedangkan untuk penerapan di lembaga-lembaga keuangan lainnya dapat diaplikasikan pada transaksi transfer, kliring, dan RTGS, Letter of Credit (L/C Impor Syariah, Letter of Credit (L/C Ekspor Syariah, Investasi Reksadana Syariah, Pembiayaan Rekening Koran Syariah, Sukuk Wakalah, Wakalah bi al-Istismar

  2. Industry

    International Nuclear Information System (INIS)

    This chapter of the environmental control report deals with the environmental impact of the industry in Austria. It gives a review of the structure and types of the industry, the legal framework and environmental policy of industrial relevance. The environmental situation of the industry in Austria is analyzed in detail, concerning air pollution (SO2, NOx, CO2, CO, CH4, N2O, NH3, Pb, Cd, Hg, dioxin, furans), waste water, waste management and deposit, energy and water consumption. The state of the art in respect of the IPPC-directives (European Integrated Pollution Prevention and Control Bureau) concerning the best available techniques of the different industry sectors is outlined. The application of European laws and regulations in the Austrian industry is described. (a.n.)

  3. EVALUACIÓN DEL RUIDO PRODUCIDO POR EL TRANSPORTE AUTOMOTOR EN LA CALLE AGUILERA EN EL CENTRO HISTÓRICO DE SANTIAGO DE CUBA

    OpenAIRE

    Alejandro Francisco Fajardo-Segarra

    2012-01-01

    En el trabajo se exponen los resultados obtenidos en las mediciones de ruido realizadas en el Centro Histórico de la ciudad de Santiago de Cuba, específicamente en la calle Heredia. Se empleó el método de las mediciones, para lo cual se utilizó como instrumento el Sonómetro Integrador. También se determinaron los niveles de ruido por el Método de Pronóstico. Por último, se realizó una comparación de los niveles de ruido obtenidos por ambos métodos, y estos, a su vez, con la norma cubana NC 26...

  4. Determinantes microeconómicos del acceso al financiamiento externo de la estructura de capital de empresas del sector industrial

    OpenAIRE

    Guadalupe Hernández Carmen; Humberto Ríos Bolivar; Celso Garrido Noguera

    2015-01-01

    El objetivo de este trabajo es analizar, por medio de un modelo econométrico de datos de panel, por efectos fijos y aleatorios, los determinantes microeconómicos del acceso al financiamiento externo que afectan la estructura de capital de las empresas del sector industrial, que cotizaron en la Bolsa Mexicana de Valores (BMV) en el periodo 2000-2010, a fin de demostrar que la crisis financiera internacional del 2007 modifica la relación entre dichos determinantes y la estructura de capital, ...

  5. Hacia una definición de los indicadores de la calidad sonora del ambiente exterior y su aplicación al SIG (caso el Eixample, de Barcelona)

    OpenAIRE

    Valdés Orellana, Fernando

    2012-01-01

    El tema en concreto que se plantea es tener una caracterización de espacio acústico, de ambiente acústico que se pase a un SIG de una ciudad concreta, en este caso tomado de El Ensanche de Barcelona. La exposición al ruido (es decir, el sonido no deseado o potencialmente peligrosos) en casa, en el trabajo, durante el viaje y durante las actividades de ocio es un hecho de vida para todos. A veces el ruido puede ser lo suficientemente fuerte como para dañar la audición, y en los niveles inferio...

  6. Estudio de la propagación del ruido de tráfico en diversas calles de la ciudad de Madrid

    OpenAIRE

    Pedrero González, Antonio; Díaz Sanchidrián, César; Echevarría, Gemma Mª

    2012-01-01

    El ruido de tráfico generado en la ciudad es uno de los principales problemas ambientales que afecta notablemente a la calidad de vida de los ciudadanos. Actualmente, la manera de abordar el problema de la contaminación acústica se basa principalmente en medidas correctoras que se aplican a posteriori; cuando el problema ya existe. El problema del ruido debería abordarse además, con medidas preventivas aplicables en la fase de diseño de la ciudad. Sin embargo existen pocos est...

  7. EVALUACIÓN DEL RUIDO PRODUCIDO POR EL TRANSPORTE AUTOMOTOR EN LA CALLE SAN PEDRO EN EL CENTRO HISTÓRICO DE SANTIAGO DE CUBA

    OpenAIRE

    Alejandro Francisco Fajardo-Segarra; Jenny Margarita Paumier-Navarro; Irian Irene Traba-González

    2015-01-01

    En el presente trabajo se exponen los resultados obtenidos a partir de las mediciones del ruido automotor en la vía San Pedro de la ciudad de Santiago de Cuba . Para esto se aplicaron dos métodos: el método de las mediciones , utilizando como instrumento principal el sonómetro integrador , y el método de pronóstico para el cálculo de los niveles de ruido. Evaluados l os resultados por ambos métodos se realizó un estudio estadístico y posteriormente se comparar...

  8. Ambientes laborales de ruido en el sector minero de la Comunidad de Madrid : clasificación, predicción y soluciones

    OpenAIRE

    Pavón García, Ignacio

    2007-01-01

    El ruido es uno de los contaminantes físicos de mayor presencia en el sector de la minería a cielo abierto así como en sus industrias auxiliares. Diferentes instituciones internacionales han tratado de una u otra forma el problema del ruido laboral, tanto desde el ámbito político y legislativo, como es el caso de la Unión Europea, como desde un punto de vista descriptivo y divulgativo, caso de la Organización Mundial de la Salud. Actualmente se conocen numerosos efectos negativos producidos p...

  9. Determinación de ruido aeronáutico mediante simulación operacional de helicópteros : Caso de estudio: helipuerto

    OpenAIRE

    Pitrelli, Sergio; Santoiani, Gastón; Nadal Mora, Vicente Javier; D'Iorio, Juan I.; Di Bernardi, Carlos Alejandro

    2011-01-01

    El objeto del presente es comentar sobre ciertas métricas utilizadas para determinar ruido aeronáutico mediante simulación operacional de helicópteros. Para ello se utilizan como referencia básica una flota de helicópteros en un emplazamiento prefijado con trayectorias operacionales definidas. Los análisis se realizaron utilizando el software INM (Integrated Noise Model v7.0) simulando trayectorias de aterrizaje y despegue. Se representa el ruido generado por la operación de la aeronave críti...

  10. Chemische, verfahrenstechnische und ökonomische Bewertung von Kohlendioxid als Rohstoff in der chemischen Industrie

    OpenAIRE

    Otto, Alexander

    2015-01-01

    The utilisation of CO2 as feedstock in the chemical industry represents an alternative to the geological storage, which is legally limited and socially debated. Generally, scientific publications about the utilisation of CO2 in chemical reactions typically address the feasibility of the syntheses without paying attention to the CO2 reduction potential or the economy in contrast to the conventional process of production. The aim of this doctoral thesis is to identify chemical reactions with CO...

  11. Understanding and development of cost-effective industrial aluminum back surface field (Al-BSF) silicon solar cells

    Science.gov (United States)

    Chen, Nian

    For the long-term strategy of gradual decarbonization of the world's energy supply, high penetration of PV electricity is critical in the future world energy landscape. In order to achieve this, solar electricity with competitive cost to fossil fuel energy is necessary. To be able to obtain high efficiency solar cells, many advanced cell architectures have been developed commercially by PV industry. However, the fabrication of these cells necessitates complex processing steps and high requirements on semiconductor materials, which make it not as cost-effective as the state-of-the-art conventional Al-BSF structure. In order to keep the cost of PV cell low and improve on the efficiency with fewer processing steps, this thesis work focuses on the understanding of the conventional Al-BSF solar cell structure. The research work therefore, focuses on the (i) design, and modeling of front metal electrodes including the use of multi-bus-bar capable of decreasing the gridline resistance, (ii) fine-line printing and (iii) metal contact co-firing using high belt speed that is not common to the solar industry to achieve ~20% efficient industrial Al-BSF silicon solar cells. In order to achieve the objectives of this thesis work, firstly, the appropriate Al paste was investigated for lowest back surface recombination velocity (BSRV), which gives high open circuit voltage (Voc). Secondly, the impact of emitter sheet resistance on solar cell performance was modeled to determine the optimal sheet resistance, and the uniformity of emitter was also investigated. Thirdly, modeling on the front metal electrodes was carried out to investigate the optimal number of busbars, and determine the optimum number of gridlines and gridline geometries that would result in low series resistance (Rs), high fill factor (FF) and hence high efficiency. Fourthly, the modeled results were experimentally validated through fine-line printing and optimized contact co-firing. By combining each layer to make

  12. Evaluación del ruido ambiental en espacios naturales protegidos: implicaciones para su gestión

    OpenAIRE

    Iglesias Merchan, Carlos

    2014-01-01

    Esta Tesis Doctoral trata sobre la caracterización acústica de los ecosistemas naturales y la evaluación del impacto ambiental del ruido antropogénico sobre sus potenciales receptores en estos lugares, incluidos los receptores no humanos y sus efectos ecológicos, además, analiza las implicaciones para su gestión a distintas escalas y se lleva a cabo una valoración económica. Este trabajo ofrece soluciones para caracterizar los paisajes sonoros de forma compatible con distintas escalas de trab...

  13. Aislamiento acústico a ruido aéreo en techos con materiales ecológicos

    OpenAIRE

    Martínez de Adrianza, Ede Coromoto

    2015-01-01

    El incremento de la contaminación acústica se ha convertido en un problema medioambiental lo cual ha generado un aumento en la demanda del aislamiento de los edificios para lograr el confort acústico. Existen métodos de medición de aislamiento acústico a ruido aéreo de fachadas bajo ensayo “in situ” pero no para techos. El objetivo de esta investigación consiste en determinar el aislamiento acústico de prototipos de techos ecológicos multicapas adaptando la metodología recomendada por normas...

  14. Análisis y valoración de ruido por los cambios realizados en la sala de chip

    OpenAIRE

    Rodríguez Luna, Maria

    2013-01-01

    El presente proyecto se inicia con la descripción de la Sala de Chip de una empresa productora de tarjetas de crédito. En esta sala se personalizan las tarjetas según las necesidades del cliente, se estampan los hologramas identificativos, el panel de firma, y el chip inteligente del que disponen las tarjetas, entre otros complementos. La problemática principal que se encuentra en esta sala es la necesidad de reducir el ruido que producen las máquinas cuando están en funcionamiento. El ...

  15. Análisis espacio-temporal con SIG del ruido ambiental urbano en Madrid y sus distritos

    OpenAIRE

    Martínez Suárez, Pedro; Moreno Jiménez, Antonio

    2005-01-01

    La principal aportación de este artículo estriba en obtener y presentar una caracterización pionera del ruido ambiental en el ámbito urbano de la metrópoli madrileña, como un componente del llamado “paisaje sonoro”. Contando con la novedad del plano acústico, que por primera vez cubre la ciudad, se afronta la tarea de analizar espacio-temporalmente la intensidad acústica urbana. A tal fin se examinan los periodos diurno y nocturno, las variaciones día-noche y los niveles sonoro...

  16. Characterization of Industrial Pt-Sn/Al2O3 Catalyst and Transient Product Formations during Propane Dehydrogenation

    Directory of Open Access Journals (Sweden)

    Kah Sing Ho

    2013-06-01

    Full Text Available The major problem plaguing propane dehydrogenation process is the coke formation on the Pt-Sn/Al2O3 catalyst which leads to catalyst deactivation. Due to information paucity, the physicochemical characteristics of the commercially obtained regenerated Pt-Sn/Al2O3 catalyst (operated in moving bed reactor and coke formation at different temperatures of reaction were discussed. The physicochemical characterization of regenerated catalyst gave a BET surface area of 104.0 m2/g with graphitic carbon content of 8.0% indicative of incomplete carbon gasification during the industrial propylene production. Effect of temperatures on coke formation was identified by studying the product yield via temperature-programmed reaction carried out at 500oC, 600oC and 700oC. It was found that ethylene was precursor to carbon laydown while propylene tends to crack into methane. Post reaction, the spent catalyst possessed relatively lower surface area and pore radius whilst exhibited higher carbon content (31.80% at 700oC compared to the regenerated catalyst. Significantly, current studies also found that higher reaction temperatures favoured the coke formation. Consequently, the propylene yield has decreased with reaction temperature. © 2013 BCREC UNDIP. All rights reservedReceived: 10th March 2013; Revised: 28th April 2013; Accepted: 6th May 2013[How to Cite: Kah, S.H., Joanna Jo, E.C., Sim, Y.C., Chin, K.C. (2013. Characterization of Industrial Pt-Sn/Al2O3 Catalyst and Transient Product Formations during Propane Dehydrogenation. Bulletin of Chemical Reaction Engineering & Catalysis, 8 (1: 77-82. (doi:10.9767/bcrec.8.1.4569.77-82][Permalink/DOI: http://dx.doi.org/10.9767/bcrec.8.1.4569.77-82] | View in  |

  17. Industrialization

    International Nuclear Information System (INIS)

    This chapter discusses the role-plays by nuclear technology to enhance productivity in industry. Some of the techniques, Non-Destructive Testing (NDT) - x, gamma, electron and neutron radiography, nuclear gauges, materials characterization are discussed thoroughly

  18. Determinantes microeconómicos del acceso al financiamiento externo de la estructura de capital de empresas del sector industrial

    Directory of Open Access Journals (Sweden)

    Guadalupe Hernández Carmen

    2015-01-01

    Full Text Available El objetivo de este trabajo es analizar, por medio de un modelo econométrico de datos de panel, por efectos fijos y aleatorios, los determinantes microeconómicos del acceso al financiamiento externo que afectan la estructura de capital de las empresas del sector industrial, que cotizaron en la Bolsa Mexicana de Valores (BMV en el periodo 2000-2010, a fin de demostrar que la crisis financiera internacional del 2007 modifica la relación entre dichos determinantes y la estructura de capital, lo que explica los cambios en la política de financiamiento en moneda extranjera que siguieron estas empresas. Los hallazgos muestran que las empresas exportadoras, las emisoras de ADRs (Recibos de depósito americano y las de gran tamaño se financiaron en moneda extranjera antes de la crisis, y después de esta, solo las empresas exportadoras y las emisoras de ADRs, aunque en mayor proporción las empresas exportadoras, lo que muestra que estas, al resolver de mejor forma sus problemas de información asimétrica con sus acreedores, al contar con buenos colaterales en las cuentas por cobrar en moneda extranjera, y dar a los inversionistas una señal positiva de una buena situación económica, lograron continuar financiándose en moneda extranjera a pesar de la crisis. Derechos reservados © 2015 Universidad Nacional Autónoma de México, Facultad de Contaduría y Administración. Este es un artículo de acceso abierto distribuido bajo los términos de la Licencia Creative Commons CC BY-NC-ND 4.0.

  19. Some problems of manufacturing and industrial application of CoMo-Al2O3 catalyst

    International Nuclear Information System (INIS)

    The monograph presents results of studies of some selected problems relating to CoMo-Al2O3 catalyst: method of production alumina support and catalyst; application of catalyst in the selected hydro refining processes; physicochemical properties of the used catalyst; reclamation of metal compounds from the spent catalyst. Results of investigations of catalyst preparation illustrate how the physicochemical properties of alumina support and catalyst, mainly porous structure could be controlled by the selection of raw materials and parameters of aluminum hydroxide precipitation, method of forming and calcination temperature of support. Application of the catalyst of modified porous structure has shown its high activity in hydro refining process of light cracking catalytic oil (over 95% hydrodesulphurization) and mild hydro cracking process of vacuum gas oil (sulphur content in product below 0.03% wt.). As an effect of studying of hydro refining process of aromatic hydrocarbon fraction it has been found that H2S concentration in reaction mixture is the main factor influencing process selectivity. Some effect on the selectivity exerts also other process parameters and chemical composition of the catalyst - cobalt molybdenum content ratio and promoters content. Long term exploitation of the domestic CoMo-Al2O3 catalyst in hydrodesulphurization process indicates its satisfied thermal stability although results in deteriorating of mechanical resistance, lowering of specific surface area, increase in mean pore radius and decrease in acidity of catalyst. In the last chapter of the monograph the results of investigations of reclamation of metal compounds (molybdic acid, aluminum hydroxide, cobalt carbonate) from the spent catalyst as well as an original technology of manufacture of the fresh one using these compounds have been presented. (author). 338 refs, 31 figs, 32 tabs

  20. Relación entre ruido por carga vehicular, molestia y atención escolar en estudiantes de nivel básico de la ciudad de Toluca 2004

    Directory of Open Access Journals (Sweden)

    Martha Elva Campuzano González

    2010-01-01

    Full Text Available Dos escuelas públicas de la ciudad de Toluca con diferente afluencia vehicular fueron seleccionadas para el estudio. Se realizaron medidas internas y externas de los niveles de ruido; los niveles de ruido encontrados sobrepasan los recomendados por la oms. Se aplicaron dos test de atención a los alumnos de las escuelas. El nivel de atención fue mejor para la escuela con menos tránsito. En el personal de ambas escuelas hubo molestia causada por el ruido vehicular.

  1. Relación entre ruido por carga vehicular, molestia y atención escolar en estudiantes de nivel básico de la ciudad de Toluca 2004

    OpenAIRE

    Martha Elva Campuzano González; Lilia Patricia Bustamante Montes; Miguel Angel Karam Calderón; Ninfa Ramírez Durán

    2010-01-01

    Dos escuelas públicas de la ciudad de Toluca con diferente afluencia vehicular fueron seleccionadas para el estudio. Se realizaron medidas internas y externas de los niveles de ruido; los niveles de ruido encontrados sobrepasan los recomendados por la oms. Se aplicaron dos test de atención a los alumnos de las escuelas. El nivel de atención fue mejor para la escuela con menos tránsito. En el personal de ambas escuelas hubo molestia causada por el ruido vehicular.

  2. Planes de acción de reducción del rudio: consideración del coste beneficio de superficies de bajo ruido y del impacto de medidas de gestión de la velocidad

    OpenAIRE

    Freitas, Elisabete F.; Machado, P.; Santos, Jorge A.; Pereira, Paulo A. A.

    2013-01-01

    La elaboración de los Planos de Acción para la gestión del ruido, de acuerdo con la Directiva Europea N º 2002/49/CE es una tarea con la que los municipios densamente poblados tienen que tratar y coordinar con otros planos o proyectos existentes o en elaboración. En este contexto, la Agencia Portuguesa de Medio Ambiente identifica el uso de pavimentos de bajo ruido como la mejor medida de costo-beneficio para la reducción del ruido. A pesar del enorme esfuerzo para desarrollar ...

  3. Desarrollo y aplicación de las categorías de impacto ambiental de ruido y de uso de suelo en la metodología de análisis de ciclo de vida

    OpenAIRE

    Garraín Cordero, Daniel

    2009-01-01

    Esta tesis se centra en el desarrollo de metodologías que permitan evaluar los impactos ambientales en dos categorías de impacto que no han sido comúnmente incluidas hasta la fecha en las aplicaciones prácticas del ACV, como son la de ruido y la de uso de suelo. Estos métodos permitirán el desarrollo consecuente de indicadores de impacto. En el caso del ruido, el método está basado en el análisis de la metodología de la cadena 'causa-efecto', para calcular los efectos del ruido causados por ...

  4. Efecto de la exposición a ruido en entornos laborales sobre la calidad de vida y rendimiento Effects of noise exposure in working places on quality of life and performance

    OpenAIRE

    Ordaz Castillo Elena; Jerónimo Maqueda Blasco; Ángel Asúnsolo Del Barco; Agustín Silva Mato; María Fe Gamo González; Rosa Ana Cortés Barragán; Eva Bermejo García

    2009-01-01

    Objetivos: La exposición laboral a ruido origina efectos sobre la salud de carácter no auditivo. El objetivo de este estudio es estimar la asociación entre exposición a ruido en entornos laborales y la aparición de alteraciones en la conducta, rendimiento y síntomas psicosomáticos. Metodología: Estudio de prevalencia a partir de datos de la VI Encuesta Nacional de Condiciones de Trabajo analizando como variable independiente la exposición a ruido y como variables dependientes los "síntomas qu...

  5. Industrial residues as an external carbon source in denitrification; Industrielle Reststoffe als externe Kohlenstoffquelle fuer die Denitrifikation

    Energy Technology Data Exchange (ETDEWEB)

    Schories, G. [TECON GmbH, Clausthal-Zellerfeld (Germany); Geissen, S.U.; Vogelpohl, A. [Technische Univ. Clausthal, Clausthal-Zellerfeld (Germany). Inst. fuer Thermische Verfahrenstechnik

    1999-07-01

    Biological waste water treatment requires biologically readily degradable carbon in order to permit elimination of as much nitrogen as possible. Often now this type of carbon is no longer present in waste water in an appropriate quantity, so that external carbon must be added. Apart from industrially fabricated substrates, the use of industrial residues and waste products as well as of partial waste water streams with a high organic pollutant load is lately being considered for cost reasons. But this is not altogether harmless. Those partial streams may contain substances that inhibit denitrification, impose an additional burden on subsequent cleaning stages or may even pass them unmodified, so that they are emitted into the environment and pose an ecological hazard potential. Hence, industrial residual products need to be specifically selected for use as an external carbon source in denitrification. A suitable strategy is described and demonstrated by means of different examples. (orig.) [German] In der biologischen Abwasserbehandlung ist fuer eine weitestgehende Stickstoffelimination oftmals biologisch gut abbaubarer Kohlenstoff im Abwasser nicht (mehr) in ausreichendem Masse vorhanden. Dann ist die Zugabe einer sog. externen Kohlenstoffquelle erforderlich. Neben industriell hergestellten Substraten wird in letzter Zeit aus Kostengruenden vielfach der Einsatz industrieller Rest- und Abfallstoffe sowie organisch hochbelasteter Abwasserteilstroeme erwogen. Dies ist jedoch nicht unproblematisch, da in diesen Stoffstroemen auch Substanzen enthalten sein koennen, die die Denitrifikation hemmen, nachfolgende Reinigungsstufen zusaetzlich belasten oder diese sogar unveraendert passsieren, dadurch in die Umwelt emittiert werden und damit moeglicherweise aus oekologischer Sicht ein Gefahrenpotential darstellen koennen. Es muss also eine besondere Auswahl der Pruefung industrieller Reststoffe im Hinblick auf den Einsatz als externe Kohlenstoffquelle in der Denitrifikation

  6. Dishonest or professional behavior? Can we tell? A comment on: Cohn et al. 2014, Nature 516, 86-89, "Business culture and dishonesty in the banking industry"

    OpenAIRE

    Stöckl, Thomas

    2015-01-01

    By means of a coin tossing experiment Cohn et al. (2014, Nature 516, 86-89, doi:10.1038tinature13977) study business culture in the banking industry and report that employees of a large, international bank behave honestly in a control condition while a significant proportion of them becomes dishonest when their professional identity as bank employees is rendered salient. The authors conclude that the business culture in the banking industry weakens and undermines the honesty norm. We argue th...

  7. NOISE AND VIBRATION OF SPACECRAFT STRUCTURES RUIDO Y VIBRACIÓN DE ESTRUCTURAS DE VEHÍCULOS ESPACIALES

    Directory of Open Access Journals (Sweden)

    Jorge P Arenas

    2006-12-01

    Full Text Available The launch of space craft generates extreme conditions, such as vibrations and acoustics that can affect the launch pad, space craft, and their payloads. The noise at launch and during the two-minute liftoff and transonic climb phase causes intense acoustic loads. These acoustic loads are the result of an intense acoustic environment generated by the interaction of the rocket-engine exhaust stream mixing with the atmosphere. Pyroshocks, that occur when spacecraft vehicle stages separate, cause additional vibration problems. In this article, an overview of the main aspects related to noise and vibration problems experienced by spacecraft structures is presented. Most of the information is based on the Space Shuttle experiences at the NASA's John F. Kennedy Space Center (KSC. In addition, a review of the vibroacoustic research being conducted at KSC is presented. These research programs are aimed at designing future space launch facilities, where cost and rocket exhaust launch noise are significantly reduced.El lanzamiento de los vehículos espaciales genera condiciones extremas, tales como de vibración y acústica, que pueden afectar la torre de lanzamiento, los vehículos espaciales y sus cargas. El ruido en el despegue y durante los dos minutos de ascenso y fase transónica causa intensas cargas acústicas. Estas cargas acústicas son el resultado del intenso medio ambiente acústico generado por la interacción del chorro de salida del motor del cohete y su mezcla con la atmósfera. Los choques pirotécnicos, que ocurren cuando las etapas de un vehículo espacial se separan, causan problemas adicionales de vibración. En este artículo se presenta una revisión de los principales aspectos relacionados con los problemas de ruido y vibración vividos por las estructuras de las naves espaciales. La mayoría de la información está basada en las experiencias con el trasbordador espacial en el Centro Espacial John F. Kennedy (KSC, de la NASA

  8. Resistencia al cambio organizacional en una pequeña y mediana empresa (PyME del sector industrial

    Directory of Open Access Journals (Sweden)

    Soraya Zuinaga de Mazzei

    2014-05-01

    Full Text Available El propósito de este artículo es presentar los aspectos más destacados de una investigación que tuvo por objetivo general identificar las variables que inciden en la resistencia al cambio organizacional en pequeña y mediana empresa (PyME, dedicada a la producción de materiales de seguridad e higiene industrial ubicada en el estado Miranda. Se parte de diferentes teorías para su sustentación, como las planteadas por Lewin (1951, Shein (1985, Prochaska y Di Clemente (1992 entre otros; el enfoque del estudio fue positivista con estudio de la realidad objetiva, de naturaleza no experimental descriptiva. La población estuvo integrada por 80 empleados de la empresa Seguntex C.A y la muestra fue de 40 empleados escogidos por género, edad, escolaridad y nivel jerárquico. La técnica de recolección de la información fue el cuestionario estructurado en Escala de Likert bajo 15 items y se utilizó la estadística descriptiva para analizar el resultado de los datos. Se concluye que la falta de canales de comunicación entre la gerencia y los empleados es lo que produce mayor resistencia al cambio frente a las transformaciones que Seguntex C.A comenzó a experimentar desde el 2012 y que afecto de manera negativa el desempeño laboral de los trabajadores en la empresa.

  9. Niveles de ruido vehicular en la Avenida Suárez en la ciudad de Tunja, Colombia

    OpenAIRE

    González, Julián Rodrigo Quintero

    2015-01-01

    Este artículo presenta parte de los resultados del trabajo de investigación titulado “Formulación plan estratégico para el control de la contaminación acústica vehicular – caso de estudio Tunja”, desarrollado para el Programa de Maestría en Ingeniería Ambiental de la Facultad de Ingeniería de la Universidad Pedagógica y Tecnológica de Colombia. La metodología se enfocó en la evaluación de los niveles de ruido generado por el tráfico, presentes en el punto con mayores condiciones de movilidad ...

  10. Vivir con ruido en la Ciudad de México. El proceso de adaptación a los entornos acústicamente hostiles

    OpenAIRE

    Ana Lidia M. Domínguez Ruiz

    2014-01-01

    La propuesta que aquí se presenta es producto de una investigación doctoral antropológica recién concluida titulada “La naturaleza sonora de la vida urbana. Ruido, convivencia y conflicto por el espacio sonoro en la Ciudad de México”, cuyo objeto general de estudio ha sido el análisis del fenómeno del ruido más allá de su dimensión estética, es decir, como construcción social producto de la interrelación de factores espaciales, demográficos, psicológicos, culturales e históricos, definidos po...

  11. Confección de la Ficha Técnica del Indicador de Contaminación Atmosférica: Nivel de Ruido Comunal

    Directory of Open Access Journals (Sweden)

    Migdely Ochoa Avila

    2006-01-01

    Full Text Available Se aborda la confección de una Ficha para medir el Nivel de Ruido Comunal, un indicador elemental de la contaminación atmosférica actual y que influye directamente en la calidad de vida de la población. A través de la experiencia y el conocimiento acumulado por los autores se realiza una caracterización de la problemática del ruido en la provincia de Holguín en función de la reflexión y de realizar la toma de medidas correctoras para su mitigación. La elaboración de Fichas Técnicas de Indicadores de Contaminación Ambiental constituye un eslabón fundamental en el perfeccionamiento del Sistema Nacional de Monitoreo Ambiental.

  12. METODOLOGÍA DE ELABORACIÓN DE MAPAS ACÚSTICOS COMO HERRAMIENTA DE GESTIÓN DEL RUIDO URBANO - CASO MEDELLÍN

    OpenAIRE

    DORA L. YEPES; MIRYAM GÓMEZ; LUIS SÁNCHEZ; ANA C. JARAMILLO

    2009-01-01

    Dada la naturaleza de la variable ruido y su variabilidad espacio – temporal, se tomó como base fundamental la aplicación de la metodología Geoestadística para la predicción y valoración de la distribución del ruido en las zonas de estudio del proyecto “Elaboración del Mapa Acústico para el Municipio de Medellínâ€�, realizado en el año 2006, mediante Convenio 680 de 2005, entre el Área Metropolitana del Valle de Aburrá y el Politécnico Colombiano Jaime Isaza Cadavid, con la participación ...

  13. Reflexiones en torno al sonido y la música

    OpenAIRE

    Friedmann, Susana

    2014-01-01

    Para la gran mayoría de la gente, la omnipresencia del sonido no merece consideración especial; es aparentemente tan transparente al escrutiniocomo lo es el aire que lo conduce. Sólo se tiene en cuenta como un fin para la comunicación, para el lenguaje, y por si acaso, para la recreación. Sin embargo, sus actividades menos organizadas que el lenguaje y la música casi no se toman en cuenta, a pesar de que el ruido de las hojas, de la lluvia, y del contexto urbano son vitales para nuestro senti...

  14. Parameter Studies on High-Velocity Oxy-Fuel Spraying of CoNiCrAlY Coatings Used in the Aeronautical Industry

    OpenAIRE

    Cabral-Miramontes, J. A.; C. Gaona-Tiburcio; F. Almeraya-Calderón; F. H. Estupiñan-Lopez; G. K. Pedraza-Basulto; Poblano-Salas, C. A.

    2014-01-01

    The thermal spraying process is a surface treatment which does not adversely affect the base metal on which it is performed. The coatings obtained by HVOF thermal spray are employed in aeronautics, aerospace, and power generation industries. Alloys and coatings designed to resist oxidizing environments at high temperatures should be able to develop a surface oxide layer, which is thermodynamically stable, slowly growing, and adherent. MCrAlY type (M = Co, Ni or combination of both) coatings a...

  15. Revisión sistemática y evidencia sobre exposición profesional a ruido y efectos extra-auditivos de naturaleza cardiovascular Systematic review and evidence on occupational noise exposure and extra-auditory effects of cardiovascular nature

    Directory of Open Access Journals (Sweden)

    Rosana Cortés Barragán

    2009-06-01

    Full Text Available Trabajo de revisión que tiene como objetivo conocer el nivel de evidencia existente sobre los efectos cardiovasculares debidos a la exposición profesional al ruido, mediante el análisis sistemático de la producción científica publicada entre 1995 y 2008. La búsqueda de las referencias bibliográficas se realizó mediante términos "Major Topic" y "MeSH" para MEDLINE y términos "Decriptors" para OSH update. Se recuperaron un total de 236 referencias y se incluyeron en la revisión todos los estudios experimentales, estudios de cohortes y estudios casos control y aquellos estudios trasversales que cumplieron, al menos, con cinco de los nueve criterios que la declaración STROBE establece para los estudios observacionales. Fueron seleccionados para su revisión a texto completo un total de 23 artículos: 12 estudios transversales, 7 estudios de cohortes, dos estudios casos control, 1 meta-análisis y 1 estudio experimental. La asignación del nivel de evidencia se realizó de acuerdo a los criterios SIGN. La selección y revisión de los artículos se realizó mediante revisión por pares, los casos de discrepancia entre pares se resolvió mediante consenso. En relación con los efectos cardiovasculares de la exposición laboral a ruido, nuestra revisión encuentra un mayor nivel de evidencia (1++ para el incremento de la tensión arterial e incremento de la frecuencia cardiaca. Estudios con nivel de evidencia 2++ muestran resultados en esa misma dirección. La enfermedad isquémica, infarto agudo de miocardio y coronariopatía muestran un nivel de evidencia 2++. La alteraciones metabólicas de lípidos y alteraciones de parámetros vasculares disponen de un nivel bajo de evidencia³. El control del ruido en entornos laborales es un factor de prevención del riesgo cardio-vascular. HTA, riesgo coronario y otras enfermedades cardiovasculares deben considerarse en los protocolos de vigilancia médica específica de los trabajadores expuestos

  16. Volatile organic compounds emission control in industrial pollution source using plasma technology coupled with F-TiO2/γ-Al2O3.

    Science.gov (United States)

    Zhu, Tao; Chen, Rui; Xia, Ni; Li, Xiaoyang; He, Xianxian; Zhao, Wenjuan; Carr, Tim

    2015-01-01

    Volatile organic compounds' (VOCs) effluents, which come from many industries, are triggering serious environmental problems. As an emerging technology, non-thermal plasma (NTP) technology is a potential technology for VOCs emission control. NTP coupled with F-TiO2/γ-Al2O3 is used for toluene removal from a gaseous influent at normal temperature and atmospheric pressure. NTP is generated by dielectric barrier discharge, and F-TiO2/γ-Al2O3 can be prepared by sol-gel method in the laboratory. In the experiment, the different packed materials were packed into the plasma reactor, including γ-Al2O3, TiO2/γ-Al2O3 and F-TiO2/γ-Al2O3. Through a series of characterization methods such as X-ray diffraction, scanning electronic microscopy and Brunner-Emmet-Teller measurements, the results show that the particle size distribution of F-TiO2 is relatively smaller than that of TiO2, and the pore distribution of F-TiO2 is more uniformly distributed than that of TiO2. The relationships among toluene removal efficiency, reactor input energy density, and the equivalent capacitances of air gap and dielectric barrier layer were investigated. The results show that the synergistic technology NTP with F-TiO2/γ-Al2O3 resulted in greater enhancement of toluene removal efficiency and energy efficiency. Especially, when packing with F-TiO2/γ-Al2O3 in NTP reactor, toluene removal efficiency reaches 99% and higher. Based on the data analysis of Fourier Transform Infrared Spectroscopy, the experimental results showed that NTP reactor packed with F-TiO2/γ-Al2O3 resulted in a better inhibition for by-products formation effectively in the gas exhaust. PMID:25428439

  17. Facile and Economical Preparation of SiAlON-Based Composites Using Coal Gangue: From Fundamental to Industrial Application

    Directory of Open Access Journals (Sweden)

    Jinfu Li

    2015-07-01

    Full Text Available The present study aims to synthesize SiAlON-based composites utilizing coal gangue. Different types of SiAlON-based composites were synthesized using coal gangue by carbothermal reduction nitridation method through control of different reaction atmospheres. The experimental results indicate that the oxygen partial pressure was an essential factor in the manufacture of SiAlON-based composites and under proper control of the atmospheres, SiAlON-based composites with different crystal structures could be synthesized. The optimum conditions of synthesis of different SiAlON-based composites were respectively determined. Based on the laboratory results, a prototype plant was proposed and constructed, and β-SiAlON composite was successfully produced using coal gangue. The synthesized β-SiAlON composite was applied in preparation of iron ladle brick instead of SiC, which showed that the compression strength, refractoriness under load and high temperature bending strength were increased from 44.5 ± 6.7 MPa, 1618 ± 21 °C and 5.4 ± 1.2 MPa to 64.1 ± 2.5 MPa, 1700 ± 28 °C and 7.1 ± 1.6 MPa, respectively. Compared with the traditional synthesis method, the present technique is expected to save energy both in raw materials and technical process.

  18. Metodología para el análisis de la dispersión del ruido en aeropuertos, estudio de caso: aeropuerto Olaya Herrera de la ciudad de Medellín

    OpenAIRE

    Cano Álvarez, Jorge Alberto

    2009-01-01

    Se presenta en este trabajo una metodología para la elaboración de mapas de ruido, utilizando el software de Sistemas de Información Geográfica ArcGIS en su versión 9.3. Para la elaboración del mapa de ruido se usó una muestra de 26 puntos, con valores de presión sonora, tomados por la Universidad de Antioquia, en la plataforma y en los alrededores del aeropuerto Olaya Herrera de la ciudad de Medellín. Para la elaboración de los mapas de ruido se aplicaron técnicas de geoestadística, pues est...

  19. Characterization of Industrial Pt-Sn/Al2O3 Catalyst and Transient Product Formations during Propane Dehydrogenation

    OpenAIRE

    Kah Sing Ho; Joanna Jo Ean Chye; Sim Yee Chin; Chin Kui Cheng

    2013-01-01

    The major problem plaguing propane dehydrogenation process is the coke formation on the Pt-Sn/Al2O3 catalyst which leads to catalyst deactivation. Due to information paucity, the physicochemical characteristics of the commercially obtained regenerated Pt-Sn/Al2O3 catalyst (operated in moving bed reactor) and coke formation at different temperatures of reaction were discussed. The physicochemical characterization of regenerated catalyst gave a BET surface area of 104.0 m2/g with graphitic carb...

  20. O ruído gerado durante a manipulação das incubadoras: implicações para o cuidado de enfermagem El ruido generado durante el manejo de incubadoras: implicaciones para la atención de enfermería Noise generated during incubator manipulation: implications for nursing care

    Directory of Open Access Journals (Sweden)

    Milena D. Oliveira Rodarte

    2005-02-01

    ón del ruido producido al manosear el equipo.Uncontrolled experimental study. Aim: quantify the impact noise of the 23 incubators functioning in the intensive and intermediate care units of a public university hospital in Ribeirão Preto-SP. Methodology: measuring occurred during incubator manipulation in a careful and in a rough way, considering the impact noise generated by the various situations in which the incubator was manipulated. Results: In practically all manipulation situations in both the careful and the rough way, group B presented higher NPS, followed by group A and D. Group C demonstrated the lowest NPS during the different manipulation situations. Even careful manipulation generated a strong noise level, and NPS almost always doubled or tripled when the same situation was realized roughly. Careful manipulation, together with lower incubator use time, revealed to be effective in reducing the noise produced during equipment manipulation.

  1. Heat supply measurement in industrial and municipal plants: Steam as heat source. Waermemengenmessung in Industrie- und kommunalen Anlagen: Dampf als Waermetraeger

    Energy Technology Data Exchange (ETDEWEB)

    Matthes, H.; Wiegand, W.

    1992-03-01

    Energy efficiency improvements and the thus to be furnished proof that energy is saved which is important in view of cost reductions and security of supply requires specialist and reliable solutions for consumption monitoring and distribution of heat for space heating and industrial processes.Heat supply measurements based on modern techniques i.e. flow measurement with vortex meter and microprocessor is presented in connection with the determination of differential enthalpy in plants using steam/condensate as heat source. Moreover heat sypply measurement is also the basis or evaluations of the communication between heat meters and heat control systems, e.g. in case of district heat supply. (orig./BWI).

  2. Valoración económica del ruido: una aplicación a través del método de transferencia de beneficios

    OpenAIRE

    Correa Restrepo, Francisco Javier; Osorio Múnera, Juan David; Patiño Valencia, Bernardo Andrés

    2011-01-01

    Este artículo tiene como objetivo realizar una aproximación a la valoración económica de los beneficios de la reducción del ruido generado por infraestructuras de telecomunicaciones en cuatro zonas urbanas del área metropolitana de la ciudad de Medellín (Colombia). Así, mediante el método de transferencia de beneficios, en un horizonte a perpetuidad, se obtuvo un valor económico de $79,40 millones para los beneficios generados por la reducción de los niveles de ruido en hogares de cuatro zona...

  3. Estudio comparativo entre las mediciones de ruido ambiental urbano a 1,5 m y 4 m de altura sobre el nivel del piso en la ciudad de medellín, antioquia - colombia

    OpenAIRE

    ANA JARAMILLO; ALICE GONZÁLEZ; CATALINA BETANCUR; MAURICIO CORREA

    2009-01-01

    Con la entrada en vigencia de la Resolución 0627 de 2006, reglamentándose la altura de 4m sobre el nivel del piso como estrategia de medición para evaluar los niveles de ruido ambiental, se ha creado una gran controversia entre las entidades ambientales gubernamentales, los académicos y profesionales del sector, sobre las implicaciones económicas, logísticas y operativas para el desarrollo del trabajo de campo. Con el propósito de determinar si mediciones simultáneas de ruido urbano efectuada...

  4. Evolución histórica y comportamiento acústico a ruido aéreo y de impactos de los forjados de la Ciudad Universitaria de Madrid.

    OpenAIRE

    Caballol Bartolomé, David

    2013-01-01

    La presente tesis analiza constructiva y acústicamente los forjados de la Ciudad Universitaria de Madrid, para lo cual desarrolla, entre otros, los siguientes aspectos: - Clasifica y analiza constructivamente por décadas los forjados de una selección de edificios docentes de la Ciudad Universitaria de Madrid. - Relaciona mediante leyes de reciprocidad el comportamiento a ruido aéreo y ruido de impactos para cada tipología de forjado, basándose en valores experimentales medidos in situ e...

  5. Spatial analysis of noise emission at the Los Azufres geothermal field, Mich.; Analisis espacial de emision de ruido en el campo geotermico de Los Azufres, Mich.

    Energy Technology Data Exchange (ETDEWEB)

    Camarena Magana, Emilio; Ordaz Mendez, Christian A. [Comision Federal de Electricidad, Residencia de Los Azufres, Morelia, Michoacan (Mexico)]. E-mail: emilio.camarena@cfe.gob.mx

    2010-01-15

    To verify noise emissions from the usual activities in an operating geothermal field, noise measurements were carried out in a 4.2 km{sup 2} area in the southern zone of the Los Azufres, Mich., geothermal field. There are seven production wells operating here and three abandoned wells. The average noise emission in the southern zone was 36.5 decibels (dB), regarded as the natural reading of environmental-noise emission. In the Christmas (valves) tree for operating production wells, the noise ranges from 70.9 to 91.7 dB, while in open discharging valves for steam-pipes, the noise can reach 118 dB. In Mexico the maximum permissible limit of noise on the periphery of a property is 68 dB in daytime and 65 dB at night. Based on measurements made at the periphery of lots where the geothermal wells are located, four out of seven production wells measured do not exceed the maximum allowable level, while the other three seem to exceed it. However no definite limits exist for the lots. It is recommended that the measurement points as indicated by the official standard in environmental matters be re-established, which will enable noise emissions by several wells that have exceeded the permissible limit, to actually fall within it. [Spanish] Se realizaron mediciones sonicas en un area de 4.2 km{sup 2} localizada en la zona sur del campo geotermico de Los Azufres, Mich., a fin de verificar la emision de ruido asociada a las actividades usuales en un campo geotermico en operacion. En esta area se encuentran siete pozos productores en operacion y tres pozos abandonados. La emision promedio de ruido en estos ultimos fue de 36.5 decibeles (dB), considerandose como la condicion natural de emision de ruido ambiental. En el arbol de valvulas de los pozos productores en operacion el ruido va de los 70.9 a los 91.7 dB, mientras que en valvulas abiertas de descarga de vaporductos la emision puede llegar hasta los 118 dB. En Mexico el limite maximo permisible de ruido en la periferia de

  6. Proprietatea Industrială - incitant al creaţiei ştiinţifice şi inovării

    OpenAIRE

    Anghel, Ion E.; Victor IANCU

    2009-01-01

    În epoca modernă, în care progresul se realizează prin cunoaştere şi se produce/se utilizează cu predilecţie cunoaştere, drepturile de proprietate industrială, protecţia acestora şi instituţiile specializate din domeniu îşi au un important rol dinamizator. Ca urmare, studiul de faţă prezintă mai întâi cerinţele stimulării creaţiei ştiinţifice, tehnologice şi inovării în cadrul spaţiului european al cercetării, în interdependenţă cu drepturile de proprietate industrială. În acest context se ev...

  7. Obtención por medio de análisis de ruido del cuarto polo de un sensor capacitivo de presión

    OpenAIRE

    Montalvo Martín, Cristina; Blázquez, Juan; García-Berrocal Sánchez, Agustin; Balbás Antón, Miguel

    2010-01-01

    Los sensores capacitivos tipo Rosemount utilizados para la medida de la presión y el caudal en las centrales nucleares pueden monitorizarse por medio de la técnica de análisis de ruido. Gracias a esta técnica se puede medir el tiempo de respuesta del sensor, magnitud utilizada para su vigilancia, sin interrumpir la operación de la planta. Hasta ahora el modelo del sensor había empleado una función de transferencia con tres polos, dos complejos conjugados y uno real. No obstante, el trabaj...

  8. Modelación matemática del ruido producido por el tráfico en seis puntos ubicados en la ciudad de Pereira

    OpenAIRE

    Duque Ramírez, Mario Augusto; Ladino Villada, Eliécer

    2007-01-01

    En el presente trabajo se muestran los resultados de la modelación matemática del ruido producido por el tráfico en seis (6) puntos ubicados en la ciudad de Pereira, los cuales se eligieron utilizando criterios como: rutas con flujo vehicular libre y constante, sectores tipo A y B según la resolución 627 de 07 de abril de 2006 y vías donde circule el transporte público. Para obtener los datos de análisis se realizaron cuatro tipos de estudios los cuales se ejecutaron de manera paralela. Dos e...

  9. Proyecto de una nueva pista de ensayos de ruido exterior en el Centro Técnico de SEAT, S.A.

    OpenAIRE

    Lesecq, Caroline

    2012-01-01

    El presente Proyecto Final de Carrera, realizado en la gerencia de Vehículo Completo (EG) del Centro Técnico de SEAT, S.A., propone la construcción de una nueva pista de pruebas para los ensayos de homologación de ruido exterior en los automóviles. El proyecto nace de la necesidad, de adaptarse a los cambios normativos previstos para el año 2014 sobre el nivel sonoro de los vehículos motores y de sus sistemas de escape. La primera parte del proyecto la constituye el estudio del dimensio...

  10. Efectos Neurológicos y Psicológicos Producidos por Ruido en la Población que Ocupa el Centro de Barquisimeto

    OpenAIRE

    Diaz Torrealba, Luz Mariana

    2012-01-01

    El ruido como fenómeno físico capaz de generar molestias y de impactar la salud es uno de los agentes perturbadores presentes en las comunidades del siglo XXI, principalmente en las grandes urbes donde existe concentración poblacional, tal es el caso de la ciudad de Barquisimeto, capital del estado Lara en Venezuela, la cual ocupa el cuarto lugar en importancia a nivel nacional según criterios de ubicación geopolítica, densidad poblacional, infraestructuras, actividades económicas y educativa...

  11. Parameter Studies on High-Velocity Oxy-Fuel Spraying of CoNiCrAlY Coatings Used in the Aeronautical Industry

    Directory of Open Access Journals (Sweden)

    J. A. Cabral-Miramontes

    2014-01-01

    Full Text Available The thermal spraying process is a surface treatment which does not adversely affect the base metal on which it is performed. The coatings obtained by HVOF thermal spray are employed in aeronautics, aerospace, and power generation industries. Alloys and coatings designed to resist oxidizing environments at high temperatures should be able to develop a surface oxide layer, which is thermodynamically stable, slowly growing, and adherent. MCrAlY type (M = Co, Ni or combination of both coatings are used in wear and corrosion applications but also provide protection against high temperature oxidation and corrosion attack in molten salts. In this investigation, CoNiCrAlY coatings were produced employing a HVOF DJH 2700 gun. The work presented here focuses on the influences of process parameters of a gas-drive HVOF system on the microstructure, adherence, wear, and oxygen content of CoNiCrAlY. The results showed that spray distance significantly affects the properties of CoNiCrAlY coatings.

  12. Evaluación de riesgos potenciales asociados a las captaciones de aguas de consumo que abastecen al polígono industrial de Casares (Málaga)

    OpenAIRE

    Carolina Castellano Calero; Miguel Ángel Pezzi Cereto; Rocío Fernández Vázquez; Piedad Martín-Olmedo

    2012-01-01

    El presente trabajo pretende mostrar la utilidad de la metodología de evaluación de riesgos en salud (ERSP) de la Agencia para las Sustancias Tóxicas y Registro de Enfermedades (ATSDR, USA) como herramienta de salud pública en la priorización y sistematización de actuaciones relacionadas con la exposición a sustancias químicas. En concreto en este estudio se han evaluado los riesgos potenciales que podrían afectar a las captaciones (pozos) que abastecen al Polígono Industrial de Casares (Mála...

  13. Biomonitoring: brug tussen industrie en landbouw : indicator-planten als middel om uitstoot schadelijke componenten te signaleren

    NARCIS (Netherlands)

    Dijk, van C.J.

    2003-01-01

    Uitleg over de mogelijkheden van biomonotoring met indicatorplanten om de effecten van luchtverontreiniging door industriële installaties op de (consumptie)kwaliteit van agrarische gewassen in de omgeving voortijdig te signaleren, de toegepaste technieken en indicatorplanten (spinazie, boerenkool, g

  14. Músicas al límite

    OpenAIRE

    Marco, Tomás

    2007-01-01

    Los límite de la música dependen de su propia definición y de su carácter humano. El empleo de sonido animal ha sido una constante a lo largo del tiempo y es una variante del empleo o miméis de sonidos naturales. La ampliación de los sonidos musicales hacia el ruido es otro de los límites desbordados ya sea ruidoo natural ,que nos lleva a la concepción moderna del paisaje sonoro o artificial que va desde los distintos bruitismos al sonido electrónico. También la naturaleza matemát...

  15. Analysis of the spectrum of noise in Gamma cameras and correction of the structural noise associated with collimator; Analisis de espectro de ruido en gammacamaras y correcion del ruido estructural asociado al colimador

    Energy Technology Data Exchange (ETDEWEB)

    Ramos Pacho, J. A.; Montes Fuentes, C.; Verde Velasco, J. M.; Delgado Aparicio, J. M.; Perez Alvarez, M. e.; Gomez Gonzalez, N.; Cons Perez, N.; Garcia Repiso, S.; Saez Beltran, M.; Gomez Llorente, P. L.

    2013-07-01

    Noise is one of the characteristics main of the images obtained in Nuclear Medicine, so using mechanisms that reduce the presence of this we would, with the same number of accounts and therefore with the same activity, harnessing the power of the computer resolution and extract more image information. With this objective, this study describes the acquisition and processing of uniform images using that analysed the spectral components of the noise, and is a filter that allows to attenuate it. (Author)

  16. Advanced properties of Al-doped ZnO films with a seed layer approach for industrial thin film photovoltaic application

    International Nuclear Information System (INIS)

    Currently sputtered Al-doped ZnO films are transferred to industry for the application in thin film silicon solar modules. These films are known to easily form light trapping structures upon etching which are necessary for absorbers with low absorbance such as μc-Si. Up to now the best structures for high efficiency thin film silicon solar cells were obtained by low rate radio frequency (r.f.) sputtering of ceramic targets. However, for industrial application a high rate process is essential. Therefore a seed layer approach was developed to increase the deposition rate while keeping the desired etch morphology and electrical properties. Aluminum doped ZnO films were deposited dynamically by direct current (d.c.) magnetron sputtering from a ceramic ZnO:Al2O3 target (1 wt.%) onto an additional seed layer prepared by r.f. sputtering. ZnO:Al films were investigated with respect to their optical and electrical properties as well as the morphology created after etching for a-Si/μc-Si solar cells. Additionally atomic force microscopy, scanning electron microscopy, X-ray diffraction and Hall measurements were performed, comparing purely r.f. or d.c. sputtered films with d.c. sputtered films on seed layers. With the seed layer approach it was possible to deposit ZnO:Al films with a visual transmittance of 83.5%, resistivity of 295 μΩ cm, electron mobility of 48.9 cm2/Vs and electron density of 4.3 · 1020 cm−3 from a ceramic target at 330 °C. Etch morphologies with 1 μm lateral structure size were achieved. - Highlights: ► Seed layer approach for dynamic sputter deposition of enhanced quality ZnO:Al. ► A thin radio frequency sputtered ZnO:Al layer assists film nucleation on glass. ► Electron mobility was increased up to 49 cm2/Vs due to quasi-epitaxial film growth. ► Etch morphology exhibits 1 μm wide craters for light trapping in solar cells. ► The concept was transferred to a seed layer sputtered with direct current

  17. Electrochemical anticorrosion performance evaluation of Al2O3 coatings deposited by MOCVD on an industrial brass substrate

    International Nuclear Information System (INIS)

    Alumina (Al2O3) coatings of different thickness were deposited on OT59 brass substrate (BS) using the metal organic chemical vapour deposition (MOCVD) technique to evaluate the corrosion performance by EIS measurements. The used precursor was dimethyl-aluminium-isopropoxide. Electrochemical characterizations of the deposited films were performed in a standard very aggressive acidic solution (aerated 1N H2SO4 at 25 deg. C up to 168 h of immersion time) by means of direct current method (Tafel curves) and electrochemical impedance spectroscopy (EIS). The Rutherford backscattering spectroscopy (RBS) indicated that the films are very pure with the correct Al2O3 stoichiometry, while the IR absorption spectra showed that the films did not contain any -O-H groups. The surface film morphology was investigated by atomic force microscopy (AFM) and displayed a globular texture. The films were very smooth, with a maximum root mean square roughness, for example, of 14 nm for a 0.96 μm thick coating. The EIS data confirmed, as expected, that a 2.40 μm Al2O3 layer ensures the best corrosion protection after 168 h of immersion in the very acidic environment used

  18. Aplicación de la técnica de ruido electroquímico para la evaluación de la corrosión en caliente por sales fundidas

    Directory of Open Access Journals (Sweden)

    José Luis Tristancho R.

    2004-01-01

    Full Text Available En esta investigación se evaluó el comportamiento a la corrosión de las aleaciones AISI 304H y T22 (2¼ Cr –1 Mo, que fueron expuestas a un agente corrosivo de 80% V2O5 – 20% Na2SO4 en un rango de temperatura comprendido entre 550ºC y 700ºC y en un ambiente oxidante de 99%O2 – 1%SO2. Las velocidades y el tipo de corrosión (general ó localizado fueron halladas mediante la técnica de Ruido Electroquímico y comparadas con la técnica tradicional de pérdida de peso. El análisis estadístico de los resultados, obtenidos por la técnica de Ruido Electroquímico a través del tiempo proporcionó los valores de Skewness, Kurtosis (para definir el tipo de corrosión, Resistencia en Ruido y velocidades de corrosión. La similitud entre los valores de Pérdida de Peso y Ruido Electroquímico fue bastante aceptable. Los valores de Skewness y Kurtosis mostraron ser indicadores del tipo de corrosión. Los resultados mostraron que el ataque corrosivo fue más severo a las temperaturas más elevadas.

  19. ESTUDIO COMPARATIVO ENTRE LAS MEDICIONES DE RUIDO AMBIENTAL URBANO A 1,5 m Y 4 m DE ALTURA SOBRE EL NIVEL DEL PISO EN LA CIUDAD DE MEDELLÍN, ANTIOQUIA - COLOMBIA

    Directory of Open Access Journals (Sweden)

    ANA JARAMILLO

    2009-01-01

    Full Text Available Con la entrada en vigencia de la Resolución 0627 de 2006, reglamentándose la altura de 4m sobre el nivel del piso como estrategia de medición para evaluar los niveles de ruido ambiental, se ha creado una gran controversia entre las entidades ambientales gubernamentales, los académicos y profesionales del sector, sobre las implicaciones económicas, logísticas y operativas para el desarrollo del trabajo de campo. Con el propósito de determinar si mediciones simultáneas de ruido urbano efectuadas a 1,5 m y 4 m representan o no la misma realidad sonora, se realizó un análisis estadístico a un conjunto de datos obtenidos en el marco de la construcción del mapa de ruido del municipio. Después de un análisis de los datos agrupados por punto, por jornada (diurna y nocturna y por tipo de día (hábil y no hábil, se infiere que no es posible afirmar la semejanza entre muestras de ruido tomadas a 1,5 m y 4 m de altura, no sólo por las diferencias numéricas, sino que representan realidades sonoras diferentes.

  20. Applicability of propane as a natural refrigerant in industrial-scale heat pumps; Realisierbarkeit von Propan als natuerliches Kaeltemittel in Grosswaermepumpen

    Energy Technology Data Exchange (ETDEWEB)

    Stache, Moritz; Beck, Tobias [Zent-Frenger GmbH, Kompetenzzentrum fuer Geothermie, Heppenheim (Germany); Cibis, Dominik [Europaeische Studienakademie Kaelte-Klima-Lueftung, Maintal (Germany)

    2011-07-01

    In view of the curren German environmental policy and the phaseout of R22 refrigerant, the refrigerating industry is interested un finding ozone-neutral and climate-neutral substitutes. Increasingly, natural refrigerants are used, e.g. ammonia, CO2, aor propane. Propane has organic carbon bonds and therefore has no ozone depletion potential and a low global warming effect. It is well compatible with conventional materials and oils and can be used in hermetic or semi-hermetic compressors. There is, however, the disadvantage of easy inflammability, and higher safety measures are required. Safety and ecology are key issues. The contribution discusses the advantages and shortcomings of propane refrigerant in industrial-scale heat pumps and goes into the residual risk that must be reckoned with. [German] Aufgrund der momentanen Umweltpolitik und dem Ausstieg von R22 als Kaeltemittel ist es von grossem Interesse der Kaeltetechnik, Kaeltemittel ohne Ozonabbaupotenzial und mit geringem Treibhauspotenzial einzusetzen. Immer haeufiger werden deshalb auch natuerliche Kaeltemittel in Kaeltekreislaeufen verwendet, wie z.B. Ammoniak, Kohlenstoffdioxid und Propan. Das natuerliche Kaeltemittel Propan hat aufgrund seiner organischen Verbindung (Kohlenwasserstoff) kein Ozonabbaupotenzial und einen geringen Treibhauseffekt. Hinzu kommt die gute Vertraeglichkeit mit ueblichen Werkstoffen und Oelen, die auch den Einsatz mit hermetischen und halbhermetischen Verdichtern ermoeglicht. Der Nachteil liegt darin, dass Propan leicht entflammbar ist und deshalb hoehere Sicherheitsmassnahmen im Vergleich zu nicht brennbaren Kaeltemitteln getroffen werden muessen. Zu den wichtigsten Kriterien, die einen derartigen Einsatz von Propan als Kaeltemittel in Kaeltekreislaeufen ermoeglichen, zaehlen vor allem die Sicherheit und der oekologische Faktor. Es soll gezeigt werden, mit welchen Vor- und Nachteilen Propan als Kaeltemittel in Grosswaermepumpen eingesetzt werden kann und welche Restrisiken zu

  1. El conocimiento de los jóvenes sobre los efectos nocivos del ruido

    OpenAIRE

    Rodríguez, Dolores

    2012-01-01

    El siguiente trabajo de investigación se desprende de la campaña “La salud auditiva de los adolescentes” realizada del 18 de octubre al 12 de noviembre del 2010 tomada en diferentes colegios de la ciudad de Mar del Plata, a cargo de la lic. Noemí Colacilli, y con la colaboración de la Municipalidad del Partido de General Pueyrredón. En dicha campaña participaron adolescentes cuyas edades oscilan entre 15 y 18 años, de ambos sexos y de 5 escuelas diferentes. Se intenta conocer e...

  2. Joining of Dissimilar alloy Sheets (Al 6063&AISI 304 during Resistance Spot Welding Process: A Feasibility Study for Automotive industry

    Directory of Open Access Journals (Sweden)

    Reddy Sreenivasulu

    2014-12-01

    Full Text Available Present design trends in automotive manufacture have shifted emphasis to alternative lightweight materials in order to achieve higher fuel efficiency and to bring down vehicle emission. Although some other joining techniques are more and more being used, spot welding still remains the primary joining method in automobile manufacturing so far. Spot welds for automotive applications should have a sufficiently large diameter, so that nugget pullout mode is the dominant failure mode. Interfacial mode is unacceptable due to its low load carrying and energy absorption capability. Strength tests with different static loading were performed in, to reveal the failure mechanisms for the lap-shear geometry and the cross-tension geometry. Based on the literature survey performed, venture into this work was amply motivated by the fact that a little research work has been conducted to joining of dissimilar materials like non ferrous to ferrous. Most of the research works concentrated on joining of different materials like steel to steel or aluminium alloy to aluminium alloy by resistance spot welding. In this work, an experimental study on the resistance spot weldability of aluminium alloy (Al 6063 and austenitic stainless steel (AISI304 sheets, which are lap joined by using a pedestal type resistance spot welding machine. Welding was conducted using a 45-deg truncated cone copper electrode with 10-mm face diameter. The weld nugget diameter, force estimation under lap shear test and T – peel test were investigated using digital type tensometer attached with capacitive displacement transducer (Mikrotech, Bangalore, Model: METM2000ER1. The results shows that joining of Al 6063 and AISI 304 thin sheets by RSW method are feasible for automotive structural joints where the loads are below 1000N act on them, it is observed that by increasing the spots per unit length, then the joint with standing strength to oppose failure is also increased linearly incase of

  3. El servicio al cliente: una necesidad imperante en la calidad de la industria. // The client service: a prevailing necessity in the quality of the industry.

    Directory of Open Access Journals (Sweden)

    E. Martínez Delgado

    2006-05-01

    Full Text Available A través de todos los sectores industriales la investigación por la excelencia en el servicio se ha convertido en unapreocupación creciente y los gerentes han reconocido que la ventaja sustancial competitiva puede ganarse a través de unservicio superior al cliente, e igualmente importante, el servicio al cliente se convierte en un medio poderoso de diferenciarlas compañías desde la competencia. La calidad equivale entonces no sólo al producto en sí mismo, sino combinado éstecon lo que le rodea; de hecho, en las normas ISO 9000: 2000 se define al producto como el resultado de un proceso,siendo los servicios una de las cuatro categorías genéricas de éste. Cada vez más se demanda la garantía de la capacidad deproducir establemente una calidad superior y de innovación del producto acorde con los deseos de los clientes; pasándosede la certificación del producto a la certificación de toda la cadena logística, debiendo brindarse servicios de alto valoragregado a los clientes en forma diferenciada. Así, en el mercado globalizado donde sólo es posible ubicar productos dealta calidad para satisfacer a los clientes y al mercado, lo primero que debe hacer el gerente de servicios es comprender lascalidades demandadas por los clientes, así como la información relacionada con la importancia relativa de lascaracterísticas de calidad.El presente trabajo expone los resultados favorables obtenidos en el sistema de producción-distribución a través de unmodelo conformado para la evaluación integral del desempeño de la organización. Éste considera al cliente, con suscriterios y preferencias, como un elemento clave en la planeación de la producción y en la proyección de las capacidadesproductivas, incorporándolo con su oferta de valor.Palabras claves: Calidad industrial, producción-distribución, ISO 9000, cliente._______________________________________________________________________________Abstract.The investigation for the

  4. Descifrando el ruido del cerebro: Actividad cerebral espontánea

    Directory of Open Access Journals (Sweden)

    Carlos González-García

    2014-01-01

    Full Text Available La actividad basal del cerebro ha sido conceptualizada tradicionalmente como “ruido”. Sin embargo, el avance en los métodos de análisis de neuroimagen ha permitido descifrar patrones coherentes de actividad en este estado de ‘reposo’. Estos patrones, lejos de ser aleatorios, parecen corresponderse en parte con los sistemas cerebrales clásicos, lo que sugiere que nos encontramos ante un funcionamiento ‘por defecto’ de distintas redes cerebrales. Esta Función Cerebral por Defecto facilitaría nuestra adaptación al medio mediante una constante predicción y sincronización con el mismo.

  5. Evaluación de la longitud de grietas por fatiga mediante la deformación plástica en muestras compactas de tracción empleando el ruido magnético de Barkhausen

    Directory of Open Access Journals (Sweden)

    de los Reyes-Rodríguez, F.

    2013-08-01

    Full Text Available In this paper the influence of different parameters on crack length is determined via plastic deformation using magnetic Barkhausen noise; the compact specimens steel used in this study were 12Cr1MoV and 11Cr1Mo, which are used for steam transportation on power plants. The main objective of this paper is to determine the crack length and its incubation time using magnetic Barkhausen noise, which lets to improve the pre-cracking process prior creep crack growth rate test simulating the real conditions of high pressure and temperature of main steam lines. Results showed that mean root square and maximum pick of voltage decrease with plastic deformation for each steel analyzed in this work, on the other hand, with the increasing of plastic deformation, a logic relationship between plastic deformation and spectrum density is observed for mid frequencies values, as well as, a variation of the amplitude, width and shape of the Barkhausen signal envelope.En este trabajo se estudia la influencia de distintos parámetros de la señal del ruido magnético de Barkhausen (RMB en la deformación plástica (DP y, en consecuencia, en la longitud de grieta de probetas compactas de tracción (PCT, fabricadas con aceros 12Cr1MoV y 11Cr1Mo respectivamente, los cuales son empleados principalmente en la industria termoenergética a nivel mundial. Este estudio se lleva a cabo con el objetivo de conocer, por medio de parámetros del RMB, la longitud de la grieta y el momento más próximo a su incubación, lo cual permite perfeccionar el proceso de preagrietamiento, previo el ensayo de velocidad de propagación de grietas a elevadas temperaturas. Se determina el voltaje medio cuadrado (Vrms y el máximo voltaje de pico (MVP de la señal del RMB, magnitudes que decrecen con el incremento de la deformación plástica para cada uno de los aceros estudiados; por otra parte, con el incremento de la deformación plástica se observa, para valores medios de la frecuencia

  6. Efeito do ruído na voz de educadoras de instituições de educação infantil Efecto del ruido en la voz de las educadoras de instituciones de educación infantil The effect of noise on the voice of preschool institution educators

    Directory of Open Access Journals (Sweden)

    Marcia Simões-Zenari

    2012-08-01

    educadoras. MÉTODOS: Estudio transversal con 28 educadoras de tres instituciones de educación infantil de Sao Paulo, Sureste de Brasil, en 2009. Los niveles de presión sonora se cuantificaron según Asociación Brasileña de Normas Técnicas, con uso de medidor de nivel de presión sonora. Los promedios se clasificaron según los niveles de conforto, incomodidad y daño auditivo propuestos por la Organización Panamericana de Salud. A las educadoras se les evaluó la voz: auto-evaluación con escala analógica visual, evaluación perceptivo-auditiva con escala GRBAS y análisis acústico con el programa Praat. Para análisis de asociación entre ruido y evaluación vocal, se utilizó estadística descriptiva y prueba de chi-cuadrado, con 10% de significancia debido al tamaño de la muestra. RESULTADOS: Las educadoras presentaban edades entre 21 y 56 años. El promedio de ruido fue 72,7dB, considerado daño 2. La auto-evaluación vocal de las profesionales presentó promedio de 5,1 en la escala, considerada alteración moderada. En la evaluación perceptivo-auditiva, 74% presentaron alteración vocal, principalmente ronquera; de estas, 52% fueron consideradas alteraciones leves. La mayor parte presentó frecuencia fundamental por debajo de lo esperado en la evaluación acústica. Promedios de jitter, shimmer y proporción armónico-ruido estaban alterados. Presencia de ruido entre los armónicos se asoció a alteración vocal. CONCLUSIONES: Hubo asociación entre presencia de ruido entre armónicos y alteración vocal, con elevados niveles de ruido. A pesar de que la mayoría de las educadoras presentaron voz alterada en grado reducido, la auto-evaluación mostró alteración moderada, probablemente por la dificultad de proyección.OBJECTIVE: To analyze the association between noise levels present in preschool institutions and vocal disorders among educators. METHODS: Cross-sectional study conducted in 2009 with 28 teachers from three preschool institutions located in the

  7. Estudio de la influencia de determinadas variables en el ruido urbano producido por el tráfico de vehículos

    OpenAIRE

    Morales Pérez, Javier

    2009-01-01

    El ruido producido por el tráfico es función de un gran número de variables, unas propias de las características de la calzada y del entorno por el que discurre y otras propias de los vehículos. De todas las variables que pueden influir, solo unas pocas están estudiadas en profundidad para ver su relación real con la contaminación acústica. El nivel de presión sonora, Leq, es el índice utilizado para evaluar la contaminación acústica y la unidad de medida es el decibelio. Las principales vari...

  8. Valores sociales y actividad física: la evolución de la gimnasia al deporte en la modernidad industrial=Social values and physical activity: the evolution from gymnastics to sport in industry modernity

    Directory of Open Access Journals (Sweden)

    Álvaro Rodríguez Díaz

    2013-03-01

    Full Text Available Los valores sociales son un elemento esencial para el análisis histórico de la actividad física y el deporte. El cambio del sistema de valores que significó el paso de la sociedad estamental a la sociedad de clases facilitó la práctica física y deportiva en el marco de un nuevo significado del cuerpo y de la disciplina social. La sociedad tradicional tenía su referente principal en la religión y en sus principios seculares del movimiento del cuerpo como hecho sujeto a discusión moral. Con la nueva sociedad surgida con la Revolución Industrial se abre una nueva concepción del cuerpo como objeto educativo para su orientación laboral. Aparece primero la gimnasia como una herramienta para la instrucción colectiva en la nueva disciplina del movimiento reglado del cuerpo. Después, se imponen los deportes ingleses que se basan en la estrategia de equipo y en el juego según reglas. En ambos casos, gimnasia y deporte responden a un nuevo núcleo de valores en los que la competencia, la unión y la superación son los referentes dominantes. A su vez, tales valores están ligados al espíritu nacionalista emergente en el siglo XIX. Así, el nacimiento de los Estados–Nación en Europa va en paralelo con la economía industrial y con una nueva concepción corporal que evoluciona desde la gimnasia hasta el deporte. En este artículo se analiza el caso de la modernización de España, indicando ejemplos ilustrativos del cambio en los valores de la actividad física practicada en el tránsito del siglo XIX al XX.--------------------------------------------------------------------------Social values are an essential feature for the historic analysis of physical activity and sport. The change in the value system produced by the transit from an estate-based towards a class-based society encouraged the practice of physical exercise and sport within a frame of a new conception of the body and social discipline. Traditional society had its major

  9. Generadores de ruido antiguos

    OpenAIRE

    Roberto Velázquez C.

    2006-01-01

    En el artículo se informa sobre un grupo de artefactos arqueológicos singulares hechos de varios materiales como piedra, hueso, madera, metal y barro que pudieron ser usados como herramientas sonoras, pero no son muy conocidos ni se habían estudiado formalmente. Su función y uso originales se desconocen, pero los artefactos sonoros que se han examinado directamente pueden producir sonidos extraordinarios que se asemejan a los de algunos animales y de fenómenos de la naturaleza como el viento....

  10. Comparación del ruido electroquímico con las técnicas de impedancia y resistencia de polarización en el sistema acero/hormigón

    Directory of Open Access Journals (Sweden)

    Bautista, A.

    1997-04-01

    Full Text Available This paper studies the corrosion rates of active and passive rebars embedded in concrete in various degrees of wetness using different electrochemical techniques. The ability of the electrochemical noise to quantificate the intensity of the attack and the advantages of this method are stressed. Data that prove that the corrosion rate is proportional to the current noise and independent to the potential noise in this system are also shown.

    En este trabajo se estudia mediante diferentes técnicas electroquímicas la velocidad de corrosión de armaduras de acero activas y pasivas embebidas en hormigón con diferentes grados de humedad. Se pone énfasis en la validez del ruido electroquímico como método para cuantificar la intensidad del ataque y en las ventajas que esta técnica ofrece. Además, se presentan datos que demuestran la proporcionalidad existente, en el sistema estudiado, entre la velocidad de corrosión y el ruido en corriente, y la independencia entre este parámetro cinético y el ruido en potencial.

  11. Evaluación de riesgos potenciales asociados a las captaciones de aguas de consumo que abastecen al polígono industrial de Casares (Málaga

    Directory of Open Access Journals (Sweden)

    Carolina Castellano Calero

    2012-08-01

    Full Text Available El presente trabajo pretende mostrar la utilidad de la metodología de evaluación de riesgos en salud (ERSP de la Agencia para las Sustancias Tóxicas y Registro de Enfermedades (ATSDR, USA como herramienta de salud pública en la priorización y sistematización de actuaciones relacionadas con la exposición a sustancias químicas. En concreto en este estudio se han evaluado los riesgos potenciales que podrían afectar a las captaciones (pozos que abastecen al Polígono Industrial de Casares (Málaga (PIC, situado en las proximidades de la planta de Transformación de Residuos Sólidos Urbanos (PT-RSU de la Costa del Sol y de un vertedero sellado. El estudio exhaustivo de la zona, con análisis de las características geomorfológicas, condiciones climáticas y actividades económicas presentes y pasadas de la zona, ha permitido identificar las rutas de exposición más probables, y la identificación y caracterización de los peligros más relevantes que podrían afectar al agua de las captaciones en estudio. La metodología de la ASTSR se ha complementado con el uso de modelos para la estimación de peligros de contaminación de acuíferos (Modelo SIG, y revisión en bases de datos internacionales para la identificación de peligros químicos. Como resultado del estudio se ha identificado la existencia de dos acuíferos distintos que abastecen los 4 pozos del PIC, lo que supone un análisis diferenciado de riesgos potenciales. Asimismo se ha descartado la actividad agrícola como fuente de peligros pero no así la ganadera. Es preciso aumentar la frecuencia de control en relación a la PT-RSU de parámetros microbiológicos y químicos como el tetracloroeteno, otros compuestos orgánicos volátiles y metales pesados (As, Pb, Hg. La importante carga de coliformes totales encontrada en todos los pozos hace necesario además investigar posibles filtraciones de la red de saneamiento de las poblaciones colindantes.  

  12. Normalización radiométrica iterativa en detección de cambios: seguimiento del tipo de cambios asociados al ecosistema mediterráneo

    OpenAIRE

    Martínez Garrido, Raul

    2013-01-01

    Se propone un método de detección de cambios (DC) basado en técnicas de teledetección. El estudio se centra en mejorar la semejanza entre imágenes, aplicando correcciones radiométricas relativas a partir de los parámetros estadísticos de la imagen. Desde una perspectiva radiométrica, al considerar como semejantes las zonas de cambio, se introduce ruido en el proceso de corrección/normalización, con la consecuente influencia en la comparación multitemporal. Un proceso iterativo permite suprimi...

  13. CONTRIBUCIÓN AL ESTUDIO DE LOS ÍNDICES EUROPEOS DE VALORACIÓN DEL RUIDO AMBIENTAL EN AMBIENTE URBANO

    OpenAIRE

    GIMÉNEZ SANCHO, ALBERTO

    2010-01-01

    La presente Tesis Doctoral pretende establecer las características fundamentales de los niveles sonoros LDEN, LDAY, LEVENING y LNIGHT dentro del ámbito urbano. En este sentido se pretende, tras un análisis de las características que presentan estos niveles, establecer un estudio que permita determinar las incertidumbres cometidas cuando se realizan estimaciones de larga duración en base a medidas de menor duración. Como parte de esta investigación, y teniendo en cuenta el objetivo perseg...

  14. Contribución al estudio del ruido de combustión en conceptos avanzados de combustión diesel.

    OpenAIRE

    Monico Muñoz, Luisa Fernanda

    2013-01-01

    Actualmente, el mundo se enfrenta a dos crisis desde el punto de vista ambiental: la escasez de combustibles fósiles y la degradación ambiental. Según las proyecciones para el año 2020 el uso de vehículos se triplicará y así aumentara la demanda de combustible fósil y por ende, las emisiones de contaminantes. En comparación con el motor de gasolina, el motor Diesel presenta la ventaja de ser un motor más eficiente y por consiguiente, emite menos CO2. No obstante, producen elevados niveles de ...

  15. Aplicación de la técnica de ruido electroquímico al estudio de pinturas comerciales de efecto barrera

    OpenAIRE

    Lanchas García-Zarco, Santiago; Alfonsín Pérez, Víctor; Suarez García, Andrés; Urréjola Madriñán, Santiago; Sánchez Bermúdez, Ángel

    2015-01-01

    Electrochemical noise is one of the methods of analysis used to interpret the phenomenon of corrosion. It has a number of advantages over other methodology types including its simplicity, its low cost and the fact that it does not disturb the system. This methodology appears to be effective together with other techniques in metal-electrolyte systems. In this case the technique is applied on its own on commercial anti-corrosion paints for which no information is available from other techniques...

  16. Análisis de reducción de ruido en señales EEG orientado al reconocimiento de patrones

    Directory of Open Access Journals (Sweden)

    Cristian Guarnizo-Lemus

    2008-12-01

    Full Text Available A study on background noise reduction (denoising on EEG signals using wavelet transform is presented, assuming that extracted features are susceptible to common noise within classes; besides, the feature space separability is compared using a linear Bayesian classifier. An increment of 1% in the average recognition rate is reached performing noise reduction in the identification of two functional states.

  17. Contribución al estudio y caracterización de la generación de ruido de flujo en el sistema de escape.

    OpenAIRE

    ANDRÉS VERDÚ, INMACULADA CONCEPCIÓN

    2008-01-01

    Los estudios de emisiones sonoras por vehículos han adquirido gran relevancia en los últimos años por dos razones: (1) el incremento de la sensibilización social hacia los fenómenos de contaminación ambiental entre los que se encuentra la contaminación acústica, y (2) las mayores exigencias del mercado (vehículos de mayores prestaciones a la vez que más confortables: confort acústico). Dentro de la complejidad de los fenómenos de generación acústica por el vehículo, en esta tesis doctoral ...

  18. Process Integration Study of the Decatur HFCS Plant for American Fructose Company, Decatur, AL [Advanced Industrial Heat Pump Applications and Evaluations

    Energy Technology Data Exchange (ETDEWEB)

    Eastwood, A.

    1989-11-10

    This work has carried out in two phases: Phase 1, identification of opportunities for heat pumps in industrial applications and Phase 2; evaluation of heat pumps in industrial applications. In Phase 1, pinch analysis was applied to several industrial sites to identify the best opportunities for heat pumping and other forms of heat integration. In Phase 2, more detailed analyses were undertaken, including the evaluation of a heat pump installed as a recommendation of Phase 1.

  19. Alfred Loisy, más allá del ruido y del humo. «Qui perdiderit animan suam salvam faciet eam (Marc, VIII, 35

    Directory of Open Access Journals (Sweden)

    Robles Muñoz, Cristobal

    2007-12-01

    Full Text Available Loisy and the modernism were identified during years. This work tries, beyond the noise and the smoke, to contribute not to loose in the forgetfulness neither the person nor the reasons of Alfred Loisy, one of the most affected by the modernist crisis. We have resorted mainly to his Mémoires. Loisy did not need to hope years to receive the tribute that deserves a person who has not betrayed itself.Loisy y el modernismo se identicaron durante años. Este trabajo pretende, más allá del ruido y del humo, contribuir a que no se pierda en el olvido ni la persona ni las razones de Alfred Loisy, uno de los más afectados por la crisis modernista. Hemos recurrido sobre todo a a sus Mémoires. Loisy no necesitó esperar años para recibir el homenaje que merece una persona que no se ha traicionado.

  20. Digresión sobre el espacio sonoro. En torno a la naturaleza intrusiva del ruido
    Digression on the sound space. Regarding the intrusive nature of noise
    Digressão sobre o espaço sonoro. Em torno da natureza intrusiva do ruído

    OpenAIRE

    Ana Lidia M. Domínguez Ruiz

    2011-01-01

    Resumen:Este trabajo forma parte de una investigación doctoral en proceso titulada La naturaleza sonora de la vida urbana: ruido y vida cotidiana en la ciudad de México, cuyo objetivo es abordar, desde la perspectiva antropológica, esa relación fuertemente arraigada en el imaginario entre el ruido y el modo de vida urbano. En el marco de esta investigación, la discusión sobre del concepto de espacio privado tiene un papel primordial, pues en este ámbito de la vida social se fragua la naturale...

  1. El servicio al cliente: una necesidad imperante en la calidad de la industria. // The client service: a prevailing necessity in the quality of the industry.

    OpenAIRE

    E. Martínez Delgado; J. Lauzardo Rico

    2006-01-01

    A través de todos los sectores industriales la investigación por la excelencia en el servicio se ha convertido en unapreocupación creciente y los gerentes han reconocido que la ventaja sustancial competitiva puede ganarse a través de unservicio superior al cliente, e igualmente importante, el servicio al cliente se convierte en un medio poderoso de diferenciarlas compañías desde la competencia. La calidad equivale entonces no sólo al producto en sí mismo, sino combinado éstecon lo que le rode...

  2. Análisis estadístico de los registros de ruido electroquímico obtenidos en la corrosión del aluminio

    Directory of Open Access Journals (Sweden)

    Sánchez, A.

    2005-10-01

    Full Text Available Given that the experimental signals obtained in an electrochemical noise measurement, ENM, are recorded over a discrete time period, the most direct way of analising them will be in the time domain resorting to statistical methods. These can be classified into two groups according to use: those which attempt to quantify the degree of the corrosion process (standard deviations, statistical power; and those which attempt to provide information on the corrosion mechanism (based on the assumption that the shape of the time records is a reflection of itself. Among the later the use of the average, the skewness and the kurtosis of the signals or the pitting index can be pointed out as being able to reflect the changes in the corrosion mechanism. Noise resistance stands out above all these parameters. In this work has undertaken the statistical treatment of ENM data obtained by subjecting aluminium to three electrolytes that provoke several types of corrosion in it: passivity, pitting corrosion and generalized corrosion.

    En la mayoría de los experimentos sobre ruido electroquímico, ENM (Electrochemical Noise Measurement, las señales experimentales se registran durante períodos de tiempo discretos. Resulta habitual, por ello, que en las publicaciones sobre esta técnica, la forma más directa de analizar esos datos consiste en acudir a métodos estadísticos en el dominio temporal. Estos métodos pueden ser clasificados, según su utilidad, en dos grupos: aquellos que pretenden cuantificar la magnitud del proceso de corrosión (desviaciones estándar, potencia estadística, etc. y los que tratan de extraer información sobre el mecanismo del proceso corrosivo en sí mismo, los cuales se basan, en su mayoría, en la suposición de que la forma de los registros temporales son un reflejo del comportamiento de la interfase metal electrólito. Entre estos últimos, se pueden destacar el valor medio, el sesgo, la curtosis y el índice de picaduras

  3. New vision of the control organisms in industrial safety and maintenance, based approach to new pressure equipment; Nueva vision de los organismos de control en la seguridad industrial y mantenimiento en base al nuevo enfoque de equipos a presion

    Energy Technology Data Exchange (ETDEWEB)

    Bernardez Garcia, A.

    2010-07-01

    Control agencies are companies dedicated to the verification of compliance with the safety of products and facilities as administrative regulation in industrial safety through certification activities, testing, inspection or audit.Changes have been made that will stimulate the increase of companies engaged in this sector.

  4. HELMET en pediatría: Características de aplicación, confort y ruido

    OpenAIRE

    Álvarez Fernández, Paloma

    2014-01-01

    En la actualidad, existen pocos estudios sobre la interfase tipo helmet en el área pediátrica y como hemos podido comprobar debido a su eficacia, flexibilidad y su posible capacidad para proporcionar confort al paciente, la convierten en opción cada vez más frecuente en las UCI. La interfase helmet mejora la situación del paciente en un periodo corto de tiempo puesto que se produce una respuesta clínica en la primera hora, reduciéndose la dificultad respiratoria o bien, en caso contrario, ...

  5. Industrial gases

    International Nuclear Information System (INIS)

    Industrial gas companies have fought hard to boost sales and hold margins in the tough economic climate, and investments are well down from their 1989-'91 peak. But 'our industry is still very strong long term' says Alain Joly, CEO of industry leader L'Air Liquide (AL). By 1994, if a European and Japanese recovery follows through on one in the U.S., 'we could see major [investment] commitments starting again,' he says. 'Noncryogenic production technology is lowering the cost of gas-making possible new applications, oxygen is getting plenty of attention in the environmental area, and hydrogen also fits into the environmental thrust,' says Bob Lovett, executive v.p./gases and equipment with Air Products ampersand Chemicals (AP). Through the 1990's, 'Industrial gases could grow even faster than in the past decade,' he says. Virtually a new generation of new gases applications should become reality by the mid-1990s, says John Campbell, of industry consultants J.R. Campbell ampersand Associates (Lexington, MA). Big new oxygen volumes will be required for powder coal injection in blast furnaces-boosting a steel mill's requirement as much as 40% and coal gasification/combined cycle (CGCC). Increased oil refinery hydroprocessing needs promise hydrogen requirements

  6. The skin care industry applied to L'Oréal Paris Men Expert : Is the Male consumer ready for the challenge?

    OpenAIRE

    Frazão, António Maria Jorge

    2012-01-01

    The principal objective of this dissertation is to understand the male consumer and their attitudes towards the face care category. Special attention is given to L’Oréal Paris Men Expert. The main goal is to identify and analyze the differences between men and women behaviours, needs and motivations to overcome the existing consumption barriers and maximize the market opportunity for the company. The findings suggest that the male consumer is far away from the female in terms of knowledge ...

  7. Al - BASED CAST COMPOSITES

    Directory of Open Access Journals (Sweden)

    Rakesh Kumar Yadav

    2011-08-01

    Full Text Available The economy is very important feature nowadays in themarket. The researches are playing an important role inengineering field to increase the life of machine parts /components and decrease the cost. The compositematerials have the potential to replace widely used steeland aluminium due to their good characteristics withbetter performance. The Al-based composites have foundextensive applications in automobile industries andaerospace industries due to their increased stiffness,strength, thermal conductivity and wear resistanceproperties. A number of particulate phases have beenemployed in the Al-alloy matrix. The cast aluminiumceramicparticulate composites are finding applications inpistons, connecting rods, cylinder liner, engine cylinderblock, electrical contacts etc.The present investigation isbased on study of the effect of particulate phase on theSEM study, micro-hardness, elastic modulus, tensilestrength and the wear behaviour of Al-5 % SiC-7 % Fe,Al-10 % SiC-6 % Fe and Al-15 % SiC-5 % Fe composites.

  8. Energy edutainment as a synergism utilization between power industry and tourism industry for the region Wilhelmshaven. Research report; Energy Edutainment als Synergienutzung zwischen Energie- und Tourismuswirtschaft fuer die Region Wilhelmshaven. Forschungsbericht

    Energy Technology Data Exchange (ETDEWEB)

    Hilligweg, Gerd; Kull, Stephan; Lohner, Harald [Jade Hochschule, Wilhelmshaven (Germany)

    2011-02-15

    In the analysis of the economic strengths of the Wilhelmshaven region, power industry and the tourism sector stand out. Both sectors supply high value-added contributions to the region, provide many jobs and dominate the region 'Jade Bay'. The contribution under consideration shows how a general public can be accomplished within the scope of an energy edutainment by a straightforward explanation of the energy issues for local people and for holidaymakers in this region. Different scenarios convey this thought-provoking impulses.

  9. Fabrication and study of stability of Ca2AlWO5,5 ceramic in crude petroleum for applications in petroleum industry

    International Nuclear Information System (INIS)

    Perovskite-type ceramic oxides or their derivatives are used for applications in high technology because of their enormous range of physic-chemical properties with little change in structural characteristics. In this paper we report manufacture ceramic components of a new ceramic Ca2AlWO5,5 by thermo-mechanical process. Stoichiometric amounts of chemical constituents with high degree of purity, were homogenized using a ball mill and high purity alumina balls, compacted by uniaxial pressing and annealed at 1200 deg C for 48 hours. The structural characterization studied by x-ray diffraction that this material has a typical complex ordered cubic perovskite structure. For the study the stability of these ceramics in crude petroleum circular discs of 20 mm diameter and 2 mm thickness were produced and sintering. These discs were submerged in crude petroleum for 15, 30 and 45 days and were examined at each stage by X-ray diffraction, optical microscopy and hardness testing and these results show that Ca2AlWO5,5 are stable in crude petroleum environment. (author)

  10. Evolución y consolidación del sistema de propiedad industrial japonés: una mirada al proceso de transformación del manejo de la propiedad industrial en Japón

    Directory of Open Access Journals (Sweden)

    David Aristizábal

    2012-11-01

    Full Text Available Japón es un país que se ha distinguido por su alta tecnología, sus estrictos modelos de disciplina y una gran cohesión social. Sin embargo, también ha sido el epicentro de grandes catástrofes humanas y naturales. Este escrito pretende revelar cómo esta nación ha superado estas adversidades mediante el desarrollo de procesos de innovación, situando el capital intelectual como una prioridad de rango nacional y velando por la protección de los derechos de propiedad industrial, generando así toda una transformación en lo que a activos intangibles se refiere y consolidándose como un ejemplo mundial de progreso y dedicación.

  11. Percepção da equipe multiprofissional sobre ruído em unidade de cuidado intermediário neonatal Percepción del equipo multiprofesional sobre el ruido en una unidad de cuidado intermedio neonatal Perception of the multidisciplinary team about noise in neonatal intermediate care units

    Directory of Open Access Journals (Sweden)

    Aline Carolina de Araújo Silva

    2012-01-01

    Full Text Available OBJETIVO: Descrever a percepção da equipe multiprofissional sobre ruído ambiente em uma unidade de cuidado intermediário neonatal. MÉTODOS: Estudo descritivo com delineamento qualitativo. Realizaram-se entrevistas abertas com 43 profissionais que atuavam na unidade de cuidado intermediário neonatal. As entrevistas gravadas foram transcritas e realizou-se a análise temática. RESULTADOS: Apreenderam-se quatro núcleos temáticos: Como a equipe percebe o ruído na unidade; O que gera ruído na unidade; Os efeitos do ruído nos bebês, trabalhadores, familiares e acompanhantes; Como reduzir o ruído na unidade. CONCLUSÃO: A equipe tem conhecimento sobre o ruído na unidade, apontando possibilidades e limitações para sua redução.OBJETIVO: Describir la percepción del equipo multiprofesional sobre el ruido del ambiente en una unidad de cuidado intermedio neonatal. MÉTODOS: Se trata de un estudio descriptivo con abordaje cualitativo. Se realizaron entrevistas abiertas con 43 profesionales que trabajaban en una unidad de cuidado intermedio neonatal. Las entrevistas grabadas fueron transcritas realizándose el análisis temático. RESULTADOS: Se elaboraron cuatro núcleos temáticos: Cómo percibe el equipo el ruido en la unidad; Qué genera ruido en la unidad; Los efectos del ruido en los bebés, trabajadores, familiares y acompañantes; Cómo reducir el ruido en la unidad. CONCLUSIÓN: El equipo tiene conocimiento sobre el ruido en la unidad, apuntando posibilidades y limitaciones para su reducción.OBJECTIVE: To describe the perception of the multidisciplinary team on ambient noise in a neonatal intermediate care unit. METHODS: Descriptive study with qualitative design. Open-ended interviews were conducted with 43 professionals working in the neonatal intermediate care unit. The taped interviews were transcribed and underwent thematic analysis. RESULTS: Four thematic topics arose: how the team perceived the noise in the unit; what

  12. Del funcionalismo industrial al de servicios: ¿la nueva utopía de la metrópoli postindustrial del valle de México?

    Directory of Open Access Journals (Sweden)

    Blanca Ramírez

    2006-05-01

    Full Text Available El objetivo de este ensayo es responder algunas preguntas que han sido parte de viejas y nuevas reflexiones sobre la Metrópoli del Valle de México, y descubrir las nuevas tendencias que percibimos en su desarrollo. Partimos de suponer que hay confusión en la forma como se le nombra y que la visión de futuro sobre su transformación en el mediano y largo plazo pasa por un cambio importante de la función industrializadora que el modelo de sustitución de importaciones impuso a la ciudad, por otro de servicios y patrimonialista que le impone la visión postindustrial en que se ve inmersa en la actualidad. En esta transformación resalta la importancia de la periferia, dada la ubicación privilegiada que tiene en cuanto al patrimonio natural y cultural que le es propio, posibilitando así su contribución para alcanzar la sustentabilidad de la metrópoli

  13. Strategy of unbalanced growth of the maquiladora industry and Mexican oil industry to year 2015; Estrategia de crecimiento desbalanceado a partir de la industria maquiladora y petrolera mexicana al 2015

    Energy Technology Data Exchange (ETDEWEB)

    Tosoni Alarco, German [TYH Economia, S.A. de C.V., Mexico, D.F. (Mexico)

    2006-11-15

    A discussion over the feasibility of implementing an unbalanced economic growth strategy is presented. With the proposed sectorial classification, it is demonstrated that the Mexican economy has an important heterogeneous and segmented growth pattern. The input-output matrix and the developed exercises, for the year 2003, reflect that hydrocarbons and the export maquiladora industry do not generate meaningful productive linkages. With the passive optimistic economic growth scenario, towards the end of 2015, between 3.8 and 5.6 million additional people with a self-employed, unemployed or emigrant status will be generated. A set of sectorial and aggregated policies with a post-keynesian-structural nature are proposed in order to improve the productive linkages and the labor market. [Spanish] Se presenta una discusion sobre la viabilidad de implantar una estrategia de crecimiento economico desbalanceado. Se demuestra que con la clasificacion sectorial propuesta, la economia mexicana tiene un patron de crecimiento marcadamente heterogeneo y segmentado. La matriz insumo-producto y los ejercicios desarrollados para el 2003 reflejan que los hidrocarburos y la industria maquiladora de exportacion no generan encadenamientos productivos significativos. En el escenario pasivo optimista de crecimiento economico, hacia finales de 2015, se generarian entre 3.8 y 5.6 millones de personas adicionales de autoempleados, desempleados o emigrantes. Se proponen un conjunto de politicas sectoriales y agregadas de naturaleza postkeynesiana-estructuralista para mejorar los encadenamientos productivos y la situacion del mercado laboral.

  14. Series de días hábiles en Colombia: una aplicación al ajuste del crecimiento industrial

    Directory of Open Access Journals (Sweden)

    Álvaro Montenegro García

    2014-06-01

    Full Text Available Si bien muchos economistas son conscientes del efecto de los días hábiles sobre la medición de la producción, aún es frecuente encontrar que estas cifras se analizan sin el correspondiente ajuste. En general, el número de días hábiles en un mes cambia de un año a otro, lo cual es cierto para todos los meses, no solo para los que contienen la Semana Santa. Este trabajo recopila la serie de días hábiles mensuales tomando en cuenta los festivos actuales y anteriores a la Ley Emiliani, y la utiliza para ajustar la serie de producción manufacturera del DANE. Para algunos meses, la diferencia entre la cifra de crecimiento industrial reportada por el DANE y la cifra ajustada por días hábiles puede acercarse a los 12 puntos porcentuales, en cualquier dirección

  15. ALS Association

    Science.gov (United States)

    ... toward a world without ALS! Walk to Defeat ALS® Walk to Defeat ALS® draws people of all ... We need your help. I Will Advocate National ALS Registry The National ALS Registry is a congressionally ...

  16. Air sparging as a supporting measure to redevelopment of a LCFC-contaminated industrial site; Air-Sparging als begleitende Sanierungsmassnahme an einem LCKW-kontaminierten Industriestandort

    Energy Technology Data Exchange (ETDEWEB)

    Breh, W.; Suttheimer, J. [Karlsruhe Univ. (T.H.) (Germany). Lehrstuhl fuer Angewandte Geologie; Holub, B. [G.U.T Linz (Austria)

    1998-12-31

    On a company ground in Vorchdorf, Austria, from the 23{sup rd} to 26{sup th} of July 1996 an air-sparging experiment has been carried out as a supporting measure to a running redevelopment of an LCKW-contamination case. On this occasion compressed air, from which the oil had been extracted, was blown into the contaminated aquifer through a well with a maximum excess pressure of 0,6 MPa. The blowing-in of compressed air caused a mobilisation of the harmful substances in the ground water and the soil air. As a result circa 2,7 kg LCKW could be removed from the underground through neighbouring ground water and soil air wells. For the observed period of time this meant a tripling of the rate of discharge. On the basis of the obtained data we suggested a routine interval of blowing in compressed air into the well 1516. A blowing-in of compressed air into the highly contaminated wells 1617 and 1625 can not be realised until the construction of upstream situated injection wells, because of the danger of an uncontrollable spread of the harmful substances. (orig.) [Deutsch] Auf einem Firmengelaende in Vorchdorf, Oesterreich, wurde vom 23.07. bis 26.07.1996 ein Air-Sparging-Versuch als unterstuetzende Massnahme zur laufenden hydraulisch-pneumatischen Sanierung eines LCKW-Schadensfalles durchgefuehrt. Hierbei wurde entoelte Druckluft ueber einen Brunnen mit einem maximalen Ueberdruck von 600 mbar in den kontaminierten Aquifer eingeblasen. Die Drucklufteinblasung fuehrte zu einer Mobilisierung von Schadstoffen im Grundwasser und in der Bodenluft, so dass ueber benachbarte Grundwasser- und Bodenluftfoerderbrunnen ca. 2,7 kg LCKW aus dem Untergrund entfernt werden konnten. Fuer den Beobachtungszeitraum bedeutet dies eine Verdreifachung des Schadstoffaustrags. Aufgrund der gewonnenen Daten wird ein routinemaessiger Intervallbetrieb der Drucklufteinblasung in einen der Brunnen vorgeschlagen. Fuer zwei kontaminierte Brunnen ist eine Drucklufteinblasung wegen der Gefahr einer

  17. DISCUSSION ON ORIGIN CENTRALIZE REGULARITY AND INDUSTRY VALUE OF THE AlO(OH)3 ORE IN PINGGUO%试论平果三水铝石成因、富集规律及工业价值

    Institute of Scientific and Technical Information of China (English)

    卢文华; 韦永坚; 黎乾汉; 廖思福

    2001-01-01

    平果岩溶堆积型铝土矿系一水硬铝石铝土矿床,原矿中含有大量的准胶结物——红土。研究资料证实,红土中的三水铝石含量甚高,不少地段已达到工业利用的要求。其他矿物质来源于原生沉积铝土矿床,并与堆积矿同产于一个层位。%The karst accumulative bauxite in Pingguo is bauxite deposit of AlO(OH)3, The primary accumulative bauxite include many agglutinate--ruddle. Investigative datum confirm, the content of AlO(OH)3 bauxite in ruddle is very high many ruddle have attained industry require. The metallogenic matter are derived from the primary sedimentary bauxite, and granted accumulative bauxite located in the same position.

  18. Evaluación de riesgos higiénicos en una pastelería industrial

    OpenAIRE

    Ibáñez-Toledano, Esther

    2015-01-01

    Se han evaluado los riesgos higiénicos: físicos, químicos y biológicos, a los que están expuestos los trabajadores del departamento de producción de la planta de fabricación de pastelería industrial de Berlys Corporación Alimentaria S.A.U. ubicada en Pamplona. Los riesgos identificados incluyen el ruido, la iluminación deficiente, el estrés térmico por frío y por calor, alergias, contacto con sustancias químicas irritantes, inhalación de polvo de harina y riesgos microbiológico...

  19. Classification of chemicals as endocrinally active compounds. Critical review of the classification of selected pesticides and industrial chemicals as endocrinally active chemicals; Einstufung von Schadstoffen als endokrin wirksame Substanzen. Kritische Ueberpruefung der Einstufung von ausgewaehlten Pestiziden und Industriechemikalien als endokrin wirksame Substanzen

    Energy Technology Data Exchange (ETDEWEB)

    Bruhn, T.; Guelden, M.; Ludewig, S. [Kiel Univ. (Germany). Inst. fuer Toxikologie; Seibert, H.

    1999-10-01

    Different authors have published lists of chemicals, especially pesticides and industrial chemicals, reported to have 'reproductive and endocrine disrupting activities' or 'estrogenic/antiestrogenic' activities. The objective of this study was to examine what is the basis for and whether it is justified to classify chemical compounds as 'endocrine disrupters' that are contained in frequently cited overviews, but have not been discussed in a previous report (UBA-TEXTE 46/97). Depending on the level of evidence derived from literature data, substances are classified either as (i) endocrinally active or (ii) potentially endocrinally active or (iii) without sufficient data on endocrine activity. The criteria used for the classification are based on the definitions by US-EPA and the Weybridge conference. (orig.) [German] Von verschiedenen Autoren sind umfangreiche Listen mit Chemikalien, insbesondere Pestiziden und Industriechemikalien, veroeffentlicht worden, die als 'endokrin wirksam und reproduktionstoxisch' oder als 'oestrogen- bzw. 'antioestrogen wirksam' bezeichnet werden. Aufgabe der vorliegenden Studie ist es, zu untersuchen, auf welchen Grundlagen die Einstufung als 'endokrin wirksam' beruht, und zu ueberpruefen, ob sie gerechtfertigt ist. Je nach den Ergebnissen der Literaturrecherchen werden die Substanzen einer von drei Gruppen zugeordnet: 1. endokrin wirksam, 2. potentiell endokrin wirksam, 3. ohne ausreichende Hinweise auf endokrine Wirksamkeit. Die verwendeten Kritetien fuer die Zuordnung lehnen sich an die Definitionen der EPA und der Weybridge-Konferenz an. Schon in einem vorangegengenen Bericht (UBA-TEXTE 46/97) diskutierte Verbindungen werden nicht erneut behandelt. (orig.)

  20. Noise measurement in NICUs and incubators with newborns: a systematic literature review Mensuración de ruido en unidades neonatales e incubadoras con recién nacidos: revisión sistemática de literatura Mensuração de ruído sonoro em unidades neonatais e incubadoras com recém-nascidos: revisão sistemática de literatura

    Directory of Open Access Journals (Sweden)

    Maria de Fátima Hasek Nogueira

    2011-02-01

    Full Text Available This systematic literature review evaluated the methodological quality of studies measuring noise in neonatal intensive care units. A manual and also electronic search in the Medline, Scielo, Lilacs, BDENF, WHOLIS, BDTD, Science Direct, NCBI and Scirus databases resulted in 40 studies that met the criterion "measuring noise in neonatal units and/or incubators". Experts in neonatology and acoustics validated the critical analysis instrument, which obtained a mean = 7.9 (SD=1.3. The inter-observer reliability in 18 articles resulted in an Intra-class correlation coefficient (ICC of 0.89 (CI 0.75-0.95. The quality indicators were 50% better in those studies that measured noise only in the unit's environment and associated measuring strategies to the physical area. The results showed great methodological variability, which hindered comparability and raised the probability of bias. The conditions required to ensure internal and external validity were observed in few studies.Se trata de una revisión sistemática de la literatura para evaluar la calidad metodológica de los estudios que midieron el ruido en las unidades neonatales. Después de buscar en las bases electrónicas Medline, Scielo, Lilacs, BDENF, WHOLIS, BDTD, Science Direct, NCBI y Scirus, y de busca manual, fueron incluidos 40 estudios que atendieron el criterio "mensurar ruido en unidades neonatales y/o incubadoras". El instrumento de análisis crítico fue validezo por especialistas en neonatología y acústica - nota media 7,9 (DE=1,3 - y la confiabilidad inter-observador en 18 artículos resultó en un ICC de 0,89 (IC95% 0,75-0,95. Los indicadores de calidad fueron 50% mejores para los estudios que midieron solamente en el ambiente de la unidad, asociando las estrategias de mensuración al área física. Los resultados revelaron gran variabilidad metodológica, lo que dificulta la comparación y algunas veces representa alta probabilidad de sesgo. El rigor necesario para garantizar

  1. Ruído no interior das incubadoras em unidade de terapia intensiva neonatal Ruido en el interior de las incubadoras en unidad de Cuidados Intensivos Neonatal Internal noise levels in neonatal intensive care unit incubators

    Directory of Open Access Journals (Sweden)

    Priscila Vendramini Peixoto

    2011-01-01

    Full Text Available OBJETIVOS: Identificar níveis de pressão sonora (NPS no interior das incubadoras e as fontes geradoras de ruído nesse microambiente de Unidade de Terapia Intensiva Neonatal de um hospital universitário. MÉTODOS: Pesquisa quantitativa, descritiva, conduzida nas incubadoras de Unidade de Terapia Intensiva Neonatal de um hospital universitário do Município de São Paulo. Os registros de NPS foram obtidos por meio de dosímetro, totalizando 261 horas, 48 horas de registros das fontes produtoras de ruídos. RESULTADOS: Constataram-se elevados NPS no interior das incubadoras. Maiores Leq médios foram 79,7 dBA na sala A e 74,3 dBA na B. As principais fontes de ruído foram: barulho da água do ventilador, permanência das portinholas abertas da incubadora, durante os cuidados prestados, alarmes dos equipamentos e conversa entre profissionais próxima à incubadora. CONCLUSÕES: Os resultados evidenciaram que os NPS no interior das incubadoras estão distantes do recomendado pelos órgãos regulamentadores. Com base nesses resultados, foram desenvolvidos um protocolo e programa educativo.OBJETIVOS: Identificar niveles de presión sonora (NPS en el interior de las incubadoras y las fuentes generadoras de ruido en ese micro ambiente de Unidad de Cuidados Intensivos Neonatal de un hospital universitario. MÉTODOS: Investigación cuantitativa, descriptiva, conducida en las incubadoras de una Unidad de Cuidados Intensivos Neonatal de un hospital universitario del Municipio de Sao Paulo. Los registros de NPS fueron obtenidos por medio de dosímetro, totalizando 261 horas, 48 horas de registros de las fuentes productoras de ruidos. RESULTADOS: Se constataron elevados NPS en el interior de las incubadoras. Mayores Leq medios fueron 79,7 dBA en la sala A y 74,3 dBA en la B. Las principales fuentes de ruido fueron: bulla del agua del ventilador, permanencia de las portezuelas abiertas de la incubadora, durante los cuidados prestados, alarmas de los

  2. Optical study of SrAl1.7B0.3O4:Eu, R (R=Nd, Dy) pigments with long-lasting phosphorescence for industrial uses

    International Nuclear Information System (INIS)

    We have studied and compared the optical properties of SrAl1.7B0.3O4:Eu, R (R=Nd, Dy) pigments that present long-lasting phosphorescence obtained by different synthesis techniques. Samples obtained by ceramic methods, in our laboratories and by an industrial process, present better phosphorescent properties than those obtained by sol-gel technique. Raman spectra show that grinding produces severe damage of the lattice. We have obtained and analyzed the Eu3+ crystal field luminescence indicating that Eu3+ is found in quite different sites comparing ceramic and sol-gel samples. Codoping, with Nd or Dy is necessary in order to reduce the Eu3+ content, in all cases. The green luminescence band, obtained under UV illumination, can be fitted to two and three components in ceramic and sol-gel samples, respectively, due to different Eu2+ sites. Eu-Dy samples present the longest and the most efficient phosphorescence. The time evolution of the afterglow is well described by a t-1 law, up to about 2 h, indicating that the recombination process is achieved by electron-hole tunneling

  3. Optical study of SrAl 1.7B 0.3O 4:Eu, R ( R=Nd, Dy) pigments with long-lasting phosphorescence for industrial uses

    Science.gov (United States)

    Sánchez-Benítez, J.; de Andrés, A.; Marchal, M.; Cordoncillo, E.; Regi, M. Vallet; Escribano, P.

    2003-02-01

    We have studied and compared the optical properties of SrAl 1.7B 0.3O 4:Eu, R ( R=Nd, Dy) pigments that present long-lasting phosphorescence obtained by different synthesis techniques. Samples obtained by ceramic methods, in our laboratories and by an industrial process, present better phosphorescent properties than those obtained by sol-gel technique. Raman spectra show that grinding produces severe damage of the lattice. We have obtained and analyzed the Eu 3+ crystal field luminescence indicating that Eu 3+ is found in quite different sites comparing ceramic and sol-gel samples. Codoping, with Nd or Dy is necessary in order to reduce the Eu 3+ content, in all cases. The green luminescence band, obtained under UV illumination, can be fitted to two and three components in ceramic and sol-gel samples, respectively, due to different Eu 2+ sites. Eu-Dy samples present the longest and the most efficient phosphorescence. The time evolution of the afterglow is well described by a t-1 law, up to about 2 h, indicating that the recombination process is achieved by electron-hole tunneling.

  4. Mapa acústico parcial de Benetusser

    OpenAIRE

    MORILLA CASTELLANOS, EMILIO

    2012-01-01

    Se establece el mapa de ruido del municipio de Benetússer para evaluar y conocer su exposición al ruido ambiental y así poder dar cumplimiento a la Directiva Europea sobre Gestión y Evaluación de Ruido Ambiental (2002/49/CE) y a la Ley nacional 37/2003 del Ruido. Los mapas estratégicos de ruido nos aportan la información fundamental para diagnosticar la situación acústica y para la gestión del ruido ambiental.

  5. The efficiency at industrial scale of a thermodynamic model for desulphurization of aluminium killed steels using slags in the system CaO-MgO-Al2O3-SiO2.

    Directory of Open Access Journals (Sweden)

    Butnariu, I.

    2010-02-01

    Full Text Available In this paper are presented the results of some desulphurization trials in the ladle carried out at industrial scale for steels with low carbon, low alloyed and aluminum killed, using basic slag and argon bubbling. The main variables of treatment have been established on the basis of a thermodynamic model that includes parameters as sulphur capacity of the slag, optical basicity of oxides and of the slags, the activities of oxides in the slags and activities of elements in the liquid steel. Sulphur contents at the end of treatment, are close to the values predicted by the model. Low sulfur levels achieved in the process, facilitate the subsequent treatment with calcium to modify the inclusions. Finally an evaluation is presented concerning the effects resulting from the reoxidation of the melt on the main indicators, showing the efficiency of the applied treatment for desulphurization.En este trabajo se presentan los resultados de algunos ensayos de desulfuración en cuchara, llevados a cabo a escala industrial, para aceros con bajo contenido en carbono, de baja aleación y calmados con aluminio, utilizando escorias basicás y corriente de argón. Las principales variables del tratamiento se han establecido sobre la base de un modelo termodinámico que incluye parámetros como la capacitad de captación de azufre por las escorias, la basicidad óptica de los óxidos y de las escorias , las actividades de los óxidos en las escorias y las actividades de los elementos en el acero liquido. Los contenidos de azufre al final de tratamiento están cerca de los valores predichos por el modelo. Los bajos niveles de azufre alcanzados en el proceso, facilitan el posterior tratamiento con calcio para modificar las inclusiones. Se presenta, finalmente, una evaluación de los efectos derivados de la reoxidación del fundido sobre los principales indicadores que muestran la eficiencia del tratamiento de desulfuración aplicado.

  6. Tendencias en investigación sobre seguridad y salud laboral: Propuesta metodológica aplicada al sector de la construcción Trends in research about occupational safety and health: Methodology applied to the construction industry

    Directory of Open Access Journals (Sweden)

    Gloria Isabel Carvajal Peláez

    2009-07-01

    Full Text Available En este artículo se realiza un análisis de las tendencias en investigación sobre seguridad y salud ocupacional aplicadas al sector de la construcción. Se investigaron fuentes publicadas en inglés (1930 -2007 y se encontraron más de 250 artículos. Para clasificar la información, se propone el "ciclo riesgo accidente" formado por cinco pasos que reflejan la realidad de la seguridad laboral en la construcción. Para cada paso, se seleccionaron las publicaciones más representativas y se elaboraron árboles de evolución lógica teniendo en cuenta el contenido, grado de importancia, orden cronológico, aplicación sobre cada tema, etc. Con estos árboles, se pasa de lo general a lo particular en forma cronológica, para demostrar las tendencias actuales en investigación en seguridad y salud en la construcción y podemos concluir que la investigación en este aspecto sigue siendo escasa, tratándose de un campo lleno de oportunidades y con un futuro prometedor.This article analyzes trends in research in occupational safety and health applied to the construction industry. The sources of information published in English (1930-2007 and found more than 250 articles. In order to classify these documents, is proposed the "risk-accident cycle" composes by five steps that reflect the reality of occupational safety and health in the construction industry. For each one of them, the papers more representative were selected and later elaborated a tree of chronological evolution considering aspects such as the content, degree of importance, chronological order, application on each subject, etc. With the elaboration of these trees, show the passage of the general to the particular in chronological form, for demonstrating the actual trends in research in safety and health in the construction. As a final remark, nowadays, research in safety and health in the construction is still very limited, being a field with many opportunities and a promising future.

  7. Industry Employment

    Science.gov (United States)

    Occupational Outlook Quarterly, 2012

    2012-01-01

    This article illustrates projected employment change by industry and industry sector over 2010-20 decade. Workers are grouped into an industry according to the type of good produced or service provided by the establishment for which they work. Industry employment projections are shown in terms of numeric change (growth or decline in the total…

  8. Industrial Chain: Industrial Vertical Definition

    Institute of Scientific and Technical Information of China (English)

    YifeiDu; GuojunJiang; ShimingLi

    2004-01-01

    Like value chain and supply chain, “industrial chain” becomes the focus of attention. The implication of “industrial chain” has gained a large range of extension. It not only expresses the industrial “chain” structure and relationship of “back and forward”in order or “up and down” in direction, but also it represents a cluster of large scale of firms in an area or colony. It is a network, or a community. Consequently, we conclude that “industrial chain” is a synthesis of industrial chain, industrial cluster, or industrial network.In this article, firstly we will distinguish industry chain from industry. An industry is the collection of firms that have the same attribute, so an industry can be defined by firm collection of certain attribute. We indicate that industrial chain is a kind of vertical and orderly industrial link. It is defined according to a series of specific product or service created. Secondly we analyze the vertical orderly defiinition process from the aspects of social division of labor and requirement division, self-organization system, and value analysis.Non-symmetry and depending on system or community of large scale of industrial units lead to entire industry to “orderly” structure. On the other hand, the draught of diversity and complexity of requirement simultaneously lead to entire industry to be more “orderly”. Along with processes of self-organization, industrial will appi'oach the state of more orderly and steady, and constantly make industrial chain upgrade. Each firm or unit, who will gain the value, has to establish channels of value, which we called “industrial value chain”. Lastly,we discuss the consequence of vertical and orderly definition, which is exhibited by a certain relationship body. The typical forms of industrial chain include industrial cluster, strategy alliance and vertical integration etc.

  9. Análisis de la eficacia de las medidas preventivas, correctoras y compensatorias de suelos, hidrología, ruido y patrimonio histórico para los proyectos de autovías en España y propuesta de indicadores de sostenibilidad correspondientes

    OpenAIRE

    Gómez Sánchez, Adoración

    2007-01-01

    El objetivo principal de esta Tesis doctoral es: Analizar y diagnosticar la tipología y eficacia de las medidas preventivas, correctoras y compensatorias propuestas y realizadas en los Proyectos de Trazado y Construcción de carreteras y autovías, desde la entrada en vigor del R.D.L. 1302/86 de 28 de junio de evaluación de impacto ambiental hasta el año 2004, relativas a la Hidrología, Suelos, Ruido y Patrimonio Histórico-Artístico, para concluir con la definición de indicadores de sosteni...

  10. Reuse of a residue from petrochemical industry with portland cement Reutilización de un residuo de la industria petroquímica como adición al cemento portland

    Directory of Open Access Journals (Sweden)

    Janneth Torres Agredo

    2012-06-01

    Full Text Available In this article the possibility of using waste from the petrochemical industry,as partial replacement of Portland cement is studied, evaluating the presenceof contaminants in the waste and the encapsulation, once it is confined on the cement. This has been done, in order to find a use to this residue without cause damage to the environment. This residue, called spent fluid catalytic cracking catalyst (FCC, is mainly formed by a type Y zeolite, which is dispersing in an inorganic oxides matrix. The toxicity characteristic leaching proceeding was applied, in mortars adding with 20% of FCC as Portland cement replacement. The results showed that the residue does not represent a problem from the point of view of the leaching of elements, such as As, Pb, Zn, Cr, and La, which were below to the permissible limits. Additionally, the pozzolanic activity of FCC was evaluated according to ASTM C311, where the efficiency of the residue as pozzolanic addition is demonstrated. With the results the importance of reusing a residue of the petrochemical industry is emphasized, that decreases the amount of cement to be used and improves the mechanical resistance of the materials containing it.En el presente artículo se estudia la posibilidad de utilizar un residuo de la industria petroquímica, como sustitución parcial del cemento Portland, evaluando la presencia de elementos contaminantes en el residuo y su encapsulación, una vez se haya confinado con el cemento. Lo anterior, con el fin de determinar si su uso como material de construcción, puede o no causar un efecto negativo al medio ambiente. El residuo, denominado catalizador usado de craqueo catalítico (FCC, es un material que está compuesto por una zeolita tipo Y, dispersa en una matriz de óxidos inorgánicos. Se aplicó la técnica de TCLP (del inglés Toxicity Characteristic Leaching Procedure, en morteros adicionados con un 20%, de FCC con respecto a la cantidad de cemento. Los resultados

  11. Una propuesta para el diagnóstico de fallos en sistemas industriales mediante el uso de estrategias bioinspiradas A proposal to fault diagnosis in industrial systems using bio-inspired strategies

    Directory of Open Access Journals (Sweden)

    Lídice Camps Echevarría

    2011-08-01

    Full Text Available In this work a study on the application of bio-inspired strategies for optimization to Fault Diagnosis in industrial systems is presented. The principal aim is to establish a basis for the development of new and viable model-based Fault Diagnosis Methods which improve some difficulties that the current methods cannot avoid. These difficulties are related mainly with fault sensitivity and robustness to external disturbances. In this study, there have been considered the Differential Evolution and the Ant Colony Optimization algorithms. This application is illustrated using simulated data of the Two tanks system benchmark. In order to analyze the advantages of these algorithms to obtain a diagnosis which needs to be sensitive to faults and robust to external disturbances, some experiments with incipient faults and noisy data have been simulated. The results indicate that the proposed approach, basically the combination of the two algorithms, characterizes a promising methodology for Fault Diagnosis.En el presente trabajo se presenta un estudio sobre la aplicación de estrategias bioinspiradas para la optimización al diagnóstico de fallos en sistemas industriales. El objetivo principal es establecer una base para el desarrollo de nuevos y viables métodos de diagnóstico de fallos basados en modelos que permitan mejorar las dificultades de los métodos actuales. Estas dificultades están relacionadas, fundamentalmente, con la sensibilidad ante la presencia de fallos y la robustez ante perturbaciones externas. En el estudio se consideraron los algoritmos Evolución Diferencial y Optimización por Colonia de Hormigas. La efectividad de la propuesta es analizada mediante experimentos con el conocido problema de prueba de los dos tanques. Los experimentos consideraron presencia de ruido en la información y fallos incipientes de manera que fuera posible analizar las ventajas de la propuesta en cuanto a diagnóstico robusto y sensible. Los resultados

  12. Industrial Engineering

    DEFF Research Database (Denmark)

    Karlsson, Christer

    2015-01-01

    Industrial engineering is a discipline that is concerned with increasing the effectiveness of (primarily) manufacturing and (occasionally).......Industrial engineering is a discipline that is concerned with increasing the effectiveness of (primarily) manufacturing and (occasionally)....

  13. Fotografische industrie

    NARCIS (Netherlands)

    Booij H

    1992-01-01

    This document on photographic industry has been published within the SPIN project. In this project information has been collected on industrial plants or industrial processes to afford support to governmental policy on emission reduction. This document contains information on the processes, emissi

  14. The dumping of industrial waste into the water treatment system in Lugo, Spain: legal framework and characterisation; Vertidos industriales al sistema de saneamiento de Lugo: marco legal y caracterizacion

    Energy Technology Data Exchange (ETDEWEB)

    Varela Novo, R.; Cancela Carral, M. A.; Fernandez-Couto Gomez, M. Del Pino

    2001-07-01

    This article summarises the legislation concerning the disposal of waste water and analyses all the treatments applied at the waste water treatment plant (WWTP). It also characterise the industrial waste reaching the WWTP in Lugo and specifies which types comply with the legal provisions and which fail to do so. finally, it examines the impact produced by each of the industrial sectors. (Author)

  15. Pérdidas auditivas relacionadas con la exposición a ruido en trabajadores de la construcción Hearing loss related with noise exposure in construction workers

    Directory of Open Access Journals (Sweden)

    Pilar Gómez Mur

    2008-12-01

    Full Text Available Introducción: A pesar del ruido existente en las obras de la construcción no está extendido el uso de protectores auditivos en este sector. Objetivo: Estudiar las pérdidas auditivas inducidas por ruido (PAIR en las audiometrías de estos trabajadores. Material y métodos: Se realiza un estudio descriptivo de las audiometrías de tonos puros realizadas a 223 trabajadores del sector y se comparan con las de 262 administrativos. Para clasificar las PAIR se ha utilizado el método desarrollado por Klockhoff (K y modificado por la clínica del Lavoro de Milan. Se analiza también la presencia de escotomas en las frecuencias 3000, 4000 ó 6000 Hz. Resultados: La prevalencia de PAIR y escotomas bilaterales ha sido significativamente superior en el grupo de la construcción (K: OR =3,1. IC95%:1,801-5,435. Escotoma audiométrico bilateral: OR=3,8. IC95%:2.244- 6.606. Aunque el escotoma en 6000 Hz ha sido el más frecuente, la diferencia entre los dos grupos únicamente ha sido significativa en el de 4000 Hz. Discusión: Entre un 20,7 (K y un 24,3% (escotomas de los trabajadores de la construcción presentan PAIR bilaterales (8,4 y 8,8% en administrativos. Es necesario incidir en las medidas preventivas, fundamentalmente en el uso de protectores auditivos adecuados. Se recomienda profundizar en la etiología de los diferentes escotomas en futuros estudios.Introduction: Despite the noise produced in constructions works, the utilization of hearing protection devices is not common in this sector. Aim: To study the noise induced hearing loss (NIHL present on the audiometries of the construction workers. Methodology: A descriptive study is made on the pure tone audiometries done to 223 construction workers, comparing them with those coming from 262 administrative ones. For audiometries classification purposes, the method developed by Klockhoff (K and modified by Clinica del Lavoro in Milan, is used. Presence of a notch in 3.000, 4.000 or 6.000 Hz

  16. Optimización Interdisciplinaria de Protocolos en Tomografía Computada a partir de la modificación del mA y del control del ruido en la imagen Interdisciplinary optimization of CT Protocols by modificating mAand controlling image noise

    Directory of Open Access Journals (Sweden)

    D. Andisco

    2010-12-01

    Full Text Available Objetivo: A partir de la determinación de las dosis en los protocolos habitualmente utilizados en estudios de tomografía computada en una institución, se modificaron la menor cantidad de parámetros radiológicos posibles para bajar las dosis impartidas, sin perder la calidad de la imagen. Materiales y métodos: Para la determinación de las dosis en un tomógrafo General Electric Hi Speed - 120kV Helicoidal, se realizaron mediciones utilizando una cámara de ionización tipo lápiz, un dosímetro, fantomas craneal y abdominal de PMMAde 16 cm y 32 cm de diámetro respectivamente, y un fantoma de agua. Con estos elementos se midieron las dosis habitualmente utilizadas y el ruido correspondiente en cada uno de los estudios. Se trabajó con el grupo de técnicos ymédicos de la institución con el objetivo de disminuir la dosis de cada uno de los protocolos utilizados, manteniendo imágenes con calidad diagnóstica. Resultados: Si bien las dosis de los protocolos utilizados por la institución antes de realizado este estudio se encontraban dentro de los rangos reconocidos internacionalmente, se establecieron nuevos protocolos y se pudieron reducir las dosis entre un 20% a un 30%, sin perder calidad ni presentar inconvenientes para el diagnóstico al grupo médico que trabaja en la institución. Conclusiones: Es fundamental realizar actividades de optimización de protocolos en tomografía computada con el objetivo de disminuir la dosis que reciben los pacientes, modificando apropiadamente los parámetros de los protocolos sin perder calidad diagnóstica ni afectar la actividad médica. Esta tarea debe llevarse a cabo en forma interdisciplinaria.Purpose: To determine the dose frequently used in computed tomography and to modify radiological parameters in order to optimize each protocol according to the dose administered. Materials and Methods: To determine the dose, measurements were made using a pencil ionization chamber, a dosemeter, a 16 cm

  17. Análisis de los transitorios de ruido electroquímico para aceros inoxidables 316 Y – DUPLEX 2205 en NaCl Y FeCl

    Directory of Open Access Journals (Sweden)

    Almeraya-Calderón, F.

    2012-04-01

    Full Text Available This work shows the results obtained from electrochemical noise measurements for different materials exhibiting pitting corrosion. The transients presented in the potential and current time, correlates with the scanning electron microscopy (SEM surface analysis. Electrochemical measurements were made at different exposure times to obtain the correlation. The materials used were stainless steel austenitic 316 and duplex 2205, immersed in ferric chloride (FeCl3 and sodium chloride (NaCl electrolytes. SEM analysis shows that the transients observed in the time series, really correspond to the activity of pit nucleation developed over the surface of the electrodes.

    En este trabajo se muestran los resultados obtenidos de las mediciones de ruido electroquímico para diferentes materiales que exhiben corrosión por picaduras. Los transitorios presentados en las series de tiempo en corriente y en potencial, se correlacionan con el análisis superficial de microscopía electrónica de barrido (MEB. Las mediciones electroquímicas fueron realizadas a diferentes tiempos de exposición, para obtener una correlación. Los materiales usados fueron los aceros inoxidables 316 y dúplex 2205, inmersos en cloruro férrico (FeCl3 y cloruro de sodio (NaCl como electrolitos. Los análisis por MEB, muestran que los transitorios observados en las series de tiempo, corresponden realmente con la actividad de la nucleación de picaduras desarrollada sobre la superficie de los electrodos.

  18. Industrial electrification

    International Nuclear Information System (INIS)

    The technical and economic scope for industrial process electrification in Canada is assessed in the light of increasing costs of combustion fuels relative to electricity. It is concluded that electricity is capable of providing an increasing share of industrial energy, eventually aproaching 100 percent. The relatively low cost of electricity in Canada offers industry the opportunity of a head start in process electrification with consequent advantages in world markets both for industrial products and for electrical process equipment and technology. A method is described to promote the necessary innovation by providing access to technology and financing. The potential growth of electricity demand due to industrial electrification is estimated

  19. Industrial Waste

    DEFF Research Database (Denmark)

    Christensen, Thomas Højlund

    2011-01-01

    Industrial waste is waste from industrial production and manufacturing. Industry covers many industrial sectors and within each sector large variations are found in terms of which raw materials are used, which production technology is used and which products are produced. Available data on unit...... generation rates and material composition as well as determining factors are discussed in this chapter. Characterizing industrial waste is faced with the problem that often only a part of the waste is handled in the municipal waste system, where information is easily accessible. In addition part of the...... industrial waste may in periods, depending on market opportunities and prices, be traded as secondary rawmaterials. Production-specificwaste from primary production, for example steel slag, is not included in the current presentation. In some countries industries must be approved or licensed and as part of...

  20. Análisis de la Tolerancia al Ruido de Características Basadas en Dinámica no Lineal Sobre Señales Fonocardiográficas

    Directory of Open Access Journals (Sweden)

    Carolina Ospina-Aguirre

    2010-12-01

    Full Text Available A very desirable attribute in automatic pathology detection systems is noise robustness, such that the presence of noise should not significantly affect the ability to detect pathologies. This paper explores the discriminatory potential that nonlinear dynamic features, in particular, the Hurst exponent, the maximum Lyapunov exponent and correlation dimension, can provide in the detection of heart murmurs using phonocardiographic signals contaminated with different levels of noise. At the same time comparing with features obtained from time frequency representations. The results show the strength of features based on nonlinear dynamics for functional state classification tasks, even on signals with high noise levels.

  1. La protección frente al ruido de los forjados proyectados por Eduardo Torroja en la E.T.S. de Arquitectura de la Ciudad Universitaria de Madrid

    OpenAIRE

    Díaz, C.; Caballol, D.; Díaz, A.

    2011-01-01

    This work presents and analyses the results of the acoustic measurements of insulation from airborne noise and impact noise in solid reinforced concrete slabs designed by Eduardo Torroja Miret and manufactured in the first half of the 1930s in the School of Architecture of the UPM Polytechnic University in Madrid, located in the Ciudad Universitaria in Madrid. The experimental values for the acoustic parameters: weighted apparent sound reduction index R’w and weighted normalised impact sound ...

  2. Sensorineural hearing loss in high school teenagers in Mexico City and its relationship with recreational noise Las alteraciones auditivas de escolares adolescentes en la Ciudad de México pueden estar relacionadas al ruido recreativo

    OpenAIRE

    María del Consuelo Martínez-Wbaldo; Claudia Soto-Vázquez; Ivonne Ferre-Calacich; Elizabeth Zambrano-Sánchez; Lucía Noguez-Trejo; Adrián Poblano

    2009-01-01

    The aim of this study was to measure the frequency of hearing loss in a sample of typical public high-school students exposed to recreational noise, and determine associated risk factors. The sample was made up of 214 teenagers from a high-school in Mexico City; subjects were selected randomly per strata. We applied a questionnaire to identify risk factors for hearing loss and performed a battery of audiologic tests consisting of otoscopy, tympanometry, and pure-tone audiometry. The mean age ...

  3. AL Amyloidosis

    Directory of Open Access Journals (Sweden)

    Desport Estelle

    2012-08-01

    Full Text Available Abstract Definition of the disease AL amyloidosis results from extra-cellular deposition of fibril-forming monoclonal immunoglobulin (Ig light chains (LC (most commonly of lambda isotype usually secreted by a small plasma cell clone. Most patients have evidence of isolated monoclonal gammopathy or smoldering myeloma, and the occurrence of AL amyloidosis in patients with symptomatic multiple myeloma or other B-cell lymphoproliferative disorders is unusual. The key event in the development of AL amyloidosis is the change in the secondary or tertiary structure of an abnormal monoclonal LC, which results in instable conformation. This conformational change is responsible for abnormal folding of the LC, rich in β leaves, which assemble into monomers that stack together to form amyloid fibrils. Epidemiology AL amyloidosis is the most common type of systemic amyloidois in developed countries with an estimated incidence of 9 cases/million inhabitant/year. The average age of diagnosed patients is 65 years and less than 10% of patients are under 50. Clinical description The clinical presentation is protean, because of the wide number of tissues or organs that may be affected. The most common presenting symptoms are asthenia and dyspnoea, which are poorly specific and may account for delayed diagnosis. Renal manifestations are the most frequent, affecting two thirds of patients at presentation. They are characterized by heavy proteinuria, with nephrotic syndrome and impaired renal function in half of the patients. Heart involvement, which is present at diagnosis in more than 50% of patients, leading to restrictive cardiopathy, is the most serious complication and engages prognosis. Diagnostic methods The diagnosis relies on pathological examination of an involved site showing Congo red-positive amyloid deposits, with typical apple-green birefringence under polarized light, that stain positive with an anti-LC antibody by immunohistochemistry and

  4. Biocorrosion and biofouling of metals and alloys of industrial usage. Present state of the art at the beginning of the new millennium

    Directory of Open Access Journals (Sweden)

    Videla, H. A.

    2003-12-01

    los efectos perjudiciales de la biocorrosión y el biofouling. Varios casos significativos de biocorrosión que fueron estudiados por nuestro grupo de investigación se describen en forma sucesiva: i la biocorrosión del aluminio y aleaciones por contaminantes fúngicos de turbocombustibles; ii la corrosión del acero inducida por bacterias sulfatoreductoras (BSR; iii las interacciones entre la biocorrosión y el biofouling en medio marino; iv las estrategias de monitoreo para el seguimiento de la biocorrosión en sistemas de aguas industriales; v la inhibición microbiana de la corrosión; vi el uso y las limitaciones de las técnicas electroquímicas para la evaluación de la bicorrosión. Las perspectivas futuras en el área se analizan considerando el potencial de las nuevas técnicas de microscopía (microscopía de barrido de electrones ambiental, microscopía confocal de rayos laser, microscopía de fuerza atómica, técnicas de análisis elemental aplicadas al estudio de superficies (análisis por dispersión de energía de rayos X, análisis por difracción de rayos X, espectroscopia de fotoemisión electrónica de rayos X, microsonda electrónica y electroquímicas (espectroscopia de impedancia electroquímica y análisis de ruido electroquímico.

  5. Industrial Robots.

    Science.gov (United States)

    Reed, Dean; Harden, Thomas K.

    Robots are mechanical devices that can be programmed to perform some task of manipulation or locomotion under automatic control. This paper discusses: (1) early developments of the robotics industry in the United States; (2) the present structure of the industry; (3) noneconomic factors related to the use of robots; (4) labor considerations…

  6. Industry honoured

    CERN Multimedia

    2008-01-01

    CERN has organised a day to thank industry for its exceptional contributions to the LHC project. Lucio Rossi addresses CERN’s industrial partners in the Main Auditorium.The LHC inauguration provided an opportunity for CERN to thank all those who have contributed to transforming this technological dream into reality. Industry has been a major player in this adventure. Over the last decade it has lent its support to CERN’s teams and participating institutes in developing, building and assembling the machine, its experiments and the computing infrastructure. CERN involved its industrial partners in the LHC inauguration by organising a special industry prize-giving day on 20 October. Over 70 firms accepted the invitation. The firms not only made fundamental contributions to the project, but some have also supported LHC events in 2008 and the inauguration ceremony through generous donations, which have been coordinated by Carmen Dell’Erba, who is responsible for secu...

  7. Efeitos respiratórios da exposição ao talco industrial em ex-trabalhadores de mineração Efectos respiratorios de la exposición al talco industrial en extrabajadores de minería Respiratory effects from industrial talc exposure among former mining workers

    Directory of Open Access Journals (Sweden)

    Rosinelle Castelo Branco Ramos Loyola

    2010-06-01

    con asbestos provenientes de Carandaí, sureste de Brasil, atendidos en el Centro de Referencia Estatal de Salud del Trabajador de Minas Gerais en 2004-2005. Los extrabajadores fueron sometidos a anamnesis clínico-ocupacional, radiografía de tórax y espirometría. Fue creado un escore de exposición que multiplicado por la duración, originó un índice de exposición acumulativa al talco. Para testar la asociación del índice de exposición acumulativa con la presencia de alteraciones radiológicas, sugestivas de neumoconiosis e/o alteraciones pleurales, fue ajustado un modelo de regresión logística exacta. RESULTADOS: Todos los extrabajadores eran hombres, con promedio de edad de 48,2 años. En las radiografías de tórax fueron encontradas alteraciones pleurales en tres de ellos, opacidades parenquimatosas compatibles con neumoconiosis en uno y sospecha en seis. Alteraciones espirométricas ocurrieron en tres. La regresión logística indicó odds ratio de 1,059 (IC 95%:1,012;1,125 para el índice acumulado, es decir, cada unidad en el índice resulta en un aumento de 5,9% en el chance de presentar alteración radiológica compatible o con sospecha de neumoconiosis. Con relación a la mediana del tiempo estimado de latencia entre el inicio de la exposición y el diagnóstico de las placas pleurales, ocurrió diferencia significativa (p=0,013 entre los casos (27,0 años y no casos (14,3 años. CONCLUSIONES: Los resultados muestran la necesidad de control clínico en los trabajadores que fueron expuestos a asbesto, particularmente debido a los efectos tardíos de la exposición a este mineral.OBJECTIVE: To evaluate late respiratory effects from occupational inhalation of talc contaminated with asbestos. METHODS: This was a case series study on 29 former talc mining workers with asbestos contamination, in the municipality of Carandaí, Southeastern Brazil, who were attended at the State Workers' Health Reference Center in 2004 and 2005. Their clinical and

  8. Motion of Information Industry Association for Leave to File Brief Amicus Curiae and Brief of Information Industry Association Amicus Curiae [in the Case of Donald Goldstein et. al. v. State of California, in the Matter of State vs. Federal Copyright Infringement Remedies.] In the Supreme Court of the United States, October Term, 1971.

    Science.gov (United States)

    Zurkowski, Paul G.

    The question raised here, whether state criminal laws can be applied to subject matter also addressed by federal copyright law, is of immediate interest to the information industry. This brief Amicus Curiae deals with the need of the industry and the public generally for remedies on which the growth of the information tools and resources needed to…

  9. EDITORIAL: Industrial Process Tomography

    Science.gov (United States)

    West, Robert M.

    2004-07-01

    Industrial process tomography remains a multidisciplinary field with considerable interest for many varied participants. Indeed this adds greatly to its appeal. It is a pleasure and a privilege to once again act as guest editor for a special feature issue of Measurement Science and Technology on industrial process tomography, the last being in December 2002. Those involved in the subject appreciate the efforts of Measurement Science and Technology in producing another issue and I thank the journal on their behalf. It can be seen that there are considerable differences in the composition of material covered in this issue compared with previous publications. The dominance of electrical impedance and electrical capacitance techniques is reduced and there is increased emphasis on general utility of tomographic methods. This is encompassed in the papers of Hoyle and Jia (visualization) and Dierick et al (Octopus). Electrical capacitance tomography has been a core modality for industrial applications. This issue includes new work in two very interesting aspects of image reconstruction: pattern matching (Takei and Saito) and simulated annealing (Ortiz-Aleman et al). It is important to take advantage of knowledge of the process such as the presence of only two components, and then to have robust reconstruction methods provided by pattern matching and by simulated annealing. Although crude reconstruction methods such as approximation by linear back projection were utilized for initial work on electrical impedance tomography, the techniques published here are much more advanced. The paper by Kim et al includes modelling of a two-component system permitting an adaption-related approach; the paper by Tossavainen et al models free surface boundaries to enable the estimation of shapes of objects within the target. There are clear improvements on the previous crude and blurred reconstructions where boundaries were merely inferred rather than estimated as in these new developments

  10. Industrial practices

    International Nuclear Information System (INIS)

    This document reports the industrial practices carried out by the author viewing the requirements fulfilled for obtention the academic degree in chemical engineering of the San Andres University - Bolivia

  11. Industrial pioneers

    NARCIS (Netherlands)

    Wassink, J.

    2014-01-01

    With their knowledge of metallurgy, mechanics and thermodynamics, mechanical engineers had to give shape to the industrial revolution in the Netherlands 150 years ago. This revolution only slowly gathered momentum, however, especially in comparison with England.

  12. Industrial ceramics

    International Nuclear Information System (INIS)

    After having given the definition of the term 'ceramics', the author describes the different manufacturing processes of these compounds. These materials are particularly used in the fields of 1)petroleum industry (in primary and secondary reforming units, in carbon black reactors and ethylene furnaces). 2)nuclear industry (for instance UO2 and PuO2 as fuels; SiC for encapsulation; boron carbides for control systems..)

  13. Industrial Noise

    OpenAIRE

    Mehran zolfaghari

    1996-01-01

    Various risk factors in industrial environments can affect hearing status and healthy in today’s modern society. Noise control and hearing conservation program is very crucial in preventing workers exposed to high levels of noise in the work places. In the current article we are going to discuss issues such as industrial noise control, noise characteristics and standards and techniques for noise control. Then the methods for individual hearing conservation and medical care will be described i...

  14. Grain refinement of hypoeutectic Al-Si alloy prepared with ELTA by Al-4B master alloy

    Institute of Scientific and Technical Information of China (English)

    WANG Ming-xing; MENG Xiang-yong; LIU Zhi-yong; LIU Zhong-xia; WENG Yong-gang; SONG Tian-fu; YANG Sheng

    2006-01-01

    Electrolytic low-titanium aluminum (ELTA) was produced by adding TiO2 powder to an industrial aluminum electrolyzer.The grain refining effect of Al-4B master alloy in the hypoeutectic Al-Si alloy prepared by using ELTA was investigated, and compared with those of Al-5Ti, Al-5Ti-1B and Al-4B master alloys in the similar alloy prepared by using pure Al. The results indicate that when Al-4B is added to the melt of the alloy prepared by using ELTA in terms of the Ti/B mass ratio of 5:1, the grain refining effect is better than those of Al-5Ti, Al-5Ti-1B and Al-4B master alloys. Thus, using Al-4B to refine the grain of Al-Si alloys prepared by using ELTA will possibly become a feasible way of obtaining Al-Si alloy with homogeneous and fine microstructure.

  15. The efficiency at industrial scale of a thermodynamic model for desulphurization of aluminium killed steels using slags in the system CaO-MgO-Al2O3-SiO2.

    OpenAIRE

    Butnariu, I.; Constantin, N.; Nita, P. S.

    2010-01-01

    In this paper are presented the results of some desulphurization trials in the ladle carried out at industrial scale for steels with low carbon, low alloyed and aluminum killed, using basic slag and argon bubbling. The main variables of treatment have been established on the basis of a thermodynamic model that includes parameters as sulphur capacity of the slag, optical basicity of oxides and of the slags, the activities of oxides in the slags and activities of elements in the liquid steel. S...

  16. Public Health Assessment of potential hazards in private drinking water wells in the industrial park of Casares (Málaga Evaluación de riesgos potenciales asociados a las captaciones de aguas de consumo que abastecen al polígono industrial de Casares (Málaga Avaliação dos riscos potenciais associados às captações de água de consumo que abastecem o parque industrial de Casares (Málaga

    Directory of Open Access Journals (Sweden)

    Piedad Martín-Olmedo

    2012-08-01

    metodología de evaluación de riesgos en salud (ERSP de la Agencia para las Sustancias Tóxicas y Registro de Enfermedades (ATSDR, USA como herramienta de salud pública en la priorización y sistematización de actuaciones relacionadas con la exposición a sustancias químicas. En concreto en este estudio se han evaluado los riesgos potenciales que podrían afectar a las captaciones (pozos que abastecen al Polígono Industrial de Casares (Málaga (PIC, situado en las proximidades de la planta de Transformación de Residuos Sólidos Urbanos (PT-RSU de la Costa del Sol y de un vertedero sellado. El estudio exhaustivo de la zona, con análisis de las características geomorfológicas, condiciones climáticas y actividades económicas presentes y pasadas de la zona, ha permitido identificar las rutas de exposición más probables, y la identificación y caracterización de los peligros más relevantes que podrían afectar al agua de las captaciones en estudio. La metodología de la ASTSR se ha complementado con el uso de modelos para la estimación de peligros de contaminación de acuíferos (Modelo SIG, y revisión en bases de datos internacionales para la identificación de peligros químicos. Como resultado del estudio se ha identificado la existencia de dos acuíferos distintos que abastecen los 4 pozos del PIC, lo que supone un análisis diferenciado de riesgos potenciales. Asimismo se ha descartado la actividad agrícola como fuente de peligros pero no así la ganadera. Es preciso aumentar la frecuencia de control en relación a la PT-RSU de parámetros microbiológicos y químicos como el tetracloroeteno, otros compuestos orgánicos volátiles y metales pesados (As, Pb, Hg. La importante carga de coliformes totales encontrada en todos los pozos hace necesario además investigar posibles filtraciones de la red de saneamiento de las poblaciones colindantes.  O presente trabalho pretende mostrar a utilidade da metodologia de Avaliação de Riscos em Saúde (ERSP da Ag

  17. Radiological evaluation of an industrial complex of phosphate fertilizer production in response to the current regulations on health protection against ionizing radiation; Evaluacion radiologica de un complejo industrial de produccion de fertilizantes fosfatado al actual reglamento sobre proteccion sanitaria contra radiaciones ionizantes

    Energy Technology Data Exchange (ETDEWEB)

    Mosqueda Pena, F.; Bolivar Raya, J. P.

    2011-07-01

    We performed a comprehensive study of the radioactive and radiological follow NORM industrial complex, in addition to that regulation, the Criteria for radiological protection against exposure to natural radiation issued by the Nuclear Safety Council (CSN).

  18. Relación entre salud y renuncia al empleo en trabajadoras de la industria maquiladora electrónica de Tijuana The relationship between health and quitting work among electronic industry female workers in Tijuana

    OpenAIRE

    Sylvia Guendelman; Steven Samuels; Martha Ramírez-Zetina

    1999-01-01

    OBJETIVO. Analizar factores de salud, laborales y sociales que contribuyen a renunciar al trabajo en dos maquiladoras transnacionales del ramo electrónico de Tijuana. MATERIAL Y MÉTODOS. Se realizó un estudio de cohorte a 725 mujeres empleadas en una planta japonesa y una estadunidense, entre enero de 1992 y marzo de 1994. La muestra se estratificó en dos intervalos de tiempo ­30 y >30 días laborados. Se efectuó un seguimiento de las mujeres hasta su renuncia o final del periodo de observació...

  19. Control de pesaje industrial

    OpenAIRE

    Lerga Olcoz, Josué

    2014-01-01

    Este proyecto tiene como finalidad la automatización de un proceso industrial para supervisar y hacer un seguimiento en la calidad de unas piezas. Hoy en día todas las fábricas dependen de la calidad final de su producto para poder seguir en el mercado. Es por ello que hay que estar constantemente invirtiendo en tecnología que realice los controles de calidad pertinente. Todo esto al menor costo posible porque si no, aunque la calidad mejore, si los costos se disparan ya no ...

  20. Fiabilidad industrial

    OpenAIRE

    Griful Ponsati, Eulàlia

    2001-01-01

    El presente libro ha sido escrito y editado para los estudios de segundo ciclo de Ingeniería de Organización Industrial que se imparten en la ETSEIT de la UPC. La materia de fiabilidad que se imparte en este texto es una introducción a las técnicas estadísticas para resolver cuestiones de fiabilidad industrial. Se estudian distintos modelos probabilísticos del tiempo de vida y se presentan distintas formas de recabar información y de estimar, en cada caso, la fiabilidad de los componentes y s...

  1. Industrial sector

    International Nuclear Information System (INIS)

    The industrial sector is categorized as related to among others, the provision of technical and engineering services, supply of products, testing and troubleshooting of parts, systems and industrial plants, quality control and assurance as well as manufacturing and processing. A total of 161 entities comprising 47 public agencies and 114 private companies were selected for the study in this sector. The majority of the public agencies, 87 %, operate in Peninsular Malaysia. The remainders were located in Sabah and Sarawak. The findings of the study on both public agencies and private companies are presented in subsequent sections of this chapter. (author)

  2. Inteligencias en aplicaciones sensibles al contexto

    OpenAIRE

    Diab, José Carlos

    2007-01-01

    El objetivo de esta tesis es introducir inteligencia en las aplicaciones sensibles a contexto. Este tipo de aplicaciones cambian su conducta dependiendo de la combinación de estímulos que recibe. Esta combinación de estímulos, proveniente de sensores, se denomina contexto. Por ejemplo, en una oficina puedo tener una serie de sensores que midan la intensidad de la luz, cuyos valores pueden ser: oscuro, normal, brillante y el ruido con valores posibles: silencio, moderado y ruidoso. Partiendo d...

  3. Diseño e implementación de medios de laboratorio para contribuir al proceso de enseñanza aprendizaje en el área de Instrumentación Industrial

    Directory of Open Access Journals (Sweden)

    M. Moreira B

    2008-11-01

    Full Text Available Este artículo presenta el diseño e implementación de una planta piloto para propósitos académicos. La planta se diseñó siguiendo la metodología expuesta por FESTO Didactic e implementa el proceso de llenado, calentado, presurización, descompresión y descarga de un tanque con agua, de forma automática. Cuenta con un sistema de seguridad (sistema centinela que lleva a cabo funciones de control sobre las variables críticas del proceso y un sistema SCADA implementado bajo la plataforma LabVIEWTM. La planta piloto facilita la adquisición de conocimientos en: programación gráfica para aplicaciones industriales, instrumentación industrial y modelaje de procesos. Familiariza a los estudiantes con las normas, metodologías y terminologías utilizadas en el ambiente industrial. Finalmente, se instaló en un local de laboratorio y sus métricas de desempeño fueron probadas satisfactoriamente.

  4. Fermentation Industry.

    Science.gov (United States)

    Grady, C. P. L., Jr.; Grady, J. K.

    1978-01-01

    Presents a literature review of wastes from the fermentation industry, covering publications of 1976-77. This review focuses on: (1) alcoholic beverage production; (2) pharmaceuticals and biochemicals production; and (3) biomass production. A list of 62 references is also presented. (HM)

  5. Shifting Industries

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Coastal city Beihai aspires to revive its economy by developing its electronic information industry Against a clear sky,the blue sea hums along a shining beach,with villas in the distance.This beautiful scene is in Beihai,in south China’s Guangxi Zhuang Autonomous Region.

  6. Industrial infrastructure

    International Nuclear Information System (INIS)

    A substantial prerequisite for an increase of the domestic participation is the existence of an ''industrial infrastructure''. As long as a structure such as that described in this paper does not exist, domestic industry participation will continue to be confined to the assembly of components, while most of the supplies (materials, accessory parts) would have to be imported. The scope and set-up of the ''industrial infrastructure'' will be determined by a study of the required capacity and organization, which has to be prepared at a very early stage (second phase of an envisaged transfer of technology), and which will be included within the scope of a nuclear programme. Experience has shown that the different state institutes, the universities, private industry and the State companies work independently without any co-ordination of their activities. By the assignment of tasks, after taking into account existing conditions, an infrastructure can be built up which can be developed more intensively in the different fields co-operating with the institutes of the partner country. In the past good co-ordination of the different activities by an experienced partner has turned out to be absolutely necessary. This, too, presents the opportunity of co-operation with the main contractor who has extensive experience in constructing nuclear power plants. In the course of time, this co-ordination function can be transferred to a specially qualified domestic institute or company, which will undertake further development and co-ordination. (author)

  7. Industrial radiography

    International Nuclear Information System (INIS)

    This publication is meant to be a manual for industrial radiography. As such the manual concentrates on the practical aspects, presenting existing radiographic system and techniques of operation to satisfy specified quality requirements. The manual also reviews the safety aspect of performing radiographic work. (author) systems

  8. Industrial Microorganisms.

    Science.gov (United States)

    Phaff, Herman J.

    1981-01-01

    Describes industrially important yeasts, molds, bacteria, and actinomycetes. Discussed in detail are microbial products, such as primary metabolites, secondary metabolites, enzymes, and capsular polysaccharides. Traces the historical background of human cell culture, mentioning recombinant DNA research and hybridization of normal mammalian cells…

  9. Contribución al estudio de los micropotenciales cardíacos

    OpenAIRE

    Vargas Drechsler, Manuel

    1996-01-01

    El objetivo principal de la tesis es el análisis y la reducción del ruido en la electrocardiografía de alta resolución con el propósito de mejorar la detección de los potenciales ventriculares tardíos. La hipótesis es que un cuidadoso análisis del ruido y de las técnicas empleadas actualmente para su reducción permitirá proponer mejoras a dichas técnicas. En otra tesis (Fernández, 1996) se estudian diversos métodos de reducción de ruido en el momento de realizar la adquisición, tales como el ...

  10. Relación entre salud y renuncia al empleo en trabajadoras de la industria maquiladora electrónica de Tijuana The relationship between health and quitting work among electronic industry female workers in Tijuana

    Directory of Open Access Journals (Sweden)

    Sylvia Guendelman

    1999-07-01

    Full Text Available OBJETIVO. Analizar factores de salud, laborales y sociales que contribuyen a renunciar al trabajo en dos maquiladoras transnacionales del ramo electrónico de Tijuana. MATERIAL Y MÉTODOS. Se realizó un estudio de cohorte a 725 mujeres empleadas en una planta japonesa y una estadunidense, entre enero de 1992 y marzo de 1994. La muestra se estratificó en dos intervalos de tiempo ­30 y >30 días laborados. Se efectuó un seguimiento de las mujeres hasta su renuncia o final del periodo de observación, mediante la recolección de información sobre variables de salud, sociales y ocupacionales de diversas fuentes de registro obtenidas de su centro de trabajo. Los motivos de renuncia y la confiabilidad de los datos obtenidos de los registros se estudiaron por medio de entrevistas de seguimiento realizadas a 46% (n= 148 de las trabajadoras que renunciaron y fueron localizadas aproximadamente 12 meses (desviación estándar= 6.7 después de su renuncia. RESULTADOS. La probabilidad acumulativa de renunciar al trabajo fue de 67% en el primer año y de 81% en el segundo. La ausencia de antecedentes laborales previos, turno diurno y nacionalidad de la compañía, resultaron factores predictivos para la renuncia al empleo durante los primeros 30 días. Tabaquismo, antecedentes quirúrgicos y haberse incapacitado por enfermedad general, después de controlar por otras variables, actuaron como factores predictivos para la renuncia posterior a 30 días. En contraposición, la tasa de renuncia posterior a 30 días resultó menor para mujeres con enfermedades crónicas. CONCLUSIONES. La renuncia al empleo en las maquiladoras es elevada y selectiva; en tanto que los factores ocupacionales se asociaron con la renuncia temprana, los relacionados con la salud fueron mejores factores predictivos para la renuncia posterior a los primeros 30 días.OBJECTIVE. To examine the health, labor and social factors which contribute to quitting work in two transnational

  11. Requirements analysis and data model design for the development of vertical ERP solutions for the ceramic industry; Analisis de requerimientos y diseno de modelo de datos para el desarrollo de una solucion ERP vertical adaptada al sector ceramico

    Energy Technology Data Exchange (ETDEWEB)

    Oltra-Badenes, R. F.; Gil-Gomez, H.; Bellver-Lopez, R.; Asensio-Cuenta, S.

    2013-06-01

    Currently, the existing information systems, and specifically the ERP, can not give adequate support to the management of manufacturing companies of ceramic tile, because, among other reasons, not to contemplate the existence of tone, size and quality within the same product. This feature, caused by the lack of homogeneity of the product (LHP), generates various problems in managing the product through the different business processes, such as, stocks management, order management, the production management, etc. Thus, it is necessary to develop an ERP solution that is able to manage adequately the ceramic product, including tone, size and quality. In this paper we analyze the requirements of the ceramic sector, in terms of product identification, and propose a data model to meet these requirements. The model arises as a basic guide for the development of vertical ERP solutions tailored to the ceramic industry. (Author)

  12. Requirements analysis and data model design for the development of vertical ERP solutions for the ceramic industry; Analisis de requerimientos y diseno de modelo de datos para el desarrollo de una solucion ERP vertical adaptada al sector ceramico

    Energy Technology Data Exchange (ETDEWEB)

    Oltra-Bandenes, R. F.; Gil-gomez, H.; Belver-Lopez, R.; Asensio-Cuesta, S.

    2013-05-01

    Currently, the existing information systems, and specifically the ERP, can not give adequate support to the management of manufacturing companies of ceramic tile, because, among other reasons, not to contemplate the existence of tone, size and quality within the same product. This feature, caused by the lack of homogeneity of the product (LHP), generates various problems in managing the product through the different business processes, such as, stocks management, order management, the production management, etc. Thus, it is necessary to develop an ERP solution that is able to manage adequately the ceramic product, including tone, size and quality. In this paper we analyze the requirements of the ceramic sector, in terms of product identification, and propose a data model to meet these requirements. The model arises as a basic guide for the development of vertical ERP solutions tailored to the ceramic industry. (Author) 30 refs.

  13. Influencia de las dimensiones de la capacidad de absorción en el desarrollo de nuevos productos en un contexto de distrito industrial. Un estudio empírico al caso del textil valenciano

    Directory of Open Access Journals (Sweden)

    Manuel Expósito-Langa

    2010-06-01

    Full Text Available El presente trabajo integra diversas perspectivas vinculadas a la competitividad empresarial como son la innovación, el territorio y la capacidad de absorción. Hemos pretendido contrastar el efecto de la capacidad de absorción sobre la innovación, dentro de un contexto de distrito industrial, donde el proceso innovador se ve afectado por unas condiciones específicas de acceso, asimilación y explotación de los recursos de conocimiento. Hemos estudiado la población de empresas que forman parte del distrito textil valenciano. Como principales conclusiones observamos que las externalidades que la empresa recibe en forma de conocimiento, provenientes del entorno en que opera, junto a las habilidades necesarias, en nuestro caso las dimensiones particulares de la capacidad de absorción, benefician el desarrollo de la innovación en la empresa

  14. Recycling of Glass Fibre Reinforced Aluminium Laminates and Silicon Removal from Aerospace Al Alloy

    NARCIS (Netherlands)

    Zhu, G.

    2012-01-01

    Aerospace aluminium alloys (7xxx and 2xxx series Al alloy) is one of the important Al alloys in our life. The recycling of aerospace Al alloy plays a significant role in sustainable development of Al industry. The fibre reinforced metal laminates GLARE including 67 wt.% 2024 Al alloy was used as upp

  15. New challenges and opportunities for industrial biotechnology

    OpenAIRE

    Chen Guo-Qiang

    2012-01-01

    Abstract Industrial biotechnology has not developed as fast as expected due to some challenges including the emergences of alternative energy sources, especially shale gas, natural gas hydrate (or gas hydrate) and sand oil et al. The weaknesses of microbial or enzymatic processes compared with the chemical processing also make industrial biotech products less competitive with the chemical ones. However, many opportunities are still there if industrial biotech processes can be as similar as th...

  16. Industry perspectives

    Science.gov (United States)

    Fuqua, Don; Hannemann, Tim; Iacobellis, Sam F.; Young, A. Thomas

    This discussion addresses the question of whether or not the space industry will take up the slack in the aerospace industry that is created by budget cuts in defense. Armed forces' research has provided an invaluable base for national technological and engineering resources for aerospace companies. It is noted that the space program should maximize the country's advances in national, scientific, and technical capabilities. It is also noted that NASA has done well in a most complicated business, but that Congress has failed to make a firm commitment to NASA's plans outlined in Vision 21 (based on the Augustine report) as evidenced by the Congressional reactions to NASA's budget requests. International cooperation and competition are discussed as well as the need for a political concensus on the direction of the space program in the U.S.

  17. Industrial vision

    DEFF Research Database (Denmark)

    Knudsen, Ole

    1998-01-01

    This dissertation is concerned with the introduction of vision-based application s in the ship building industry. The industrial research project is divided into a natural seq uence of developments, from basic theoretical projective image generation via CAD and subpixel analysis to a description...... is present ed, and the variability of the parameters is examined and described. The concept of using CAD together with vision information is based on the fact that all items processed at OSS have an associated complete 3D CAD model that is accessible at all production states. This concept gives numerous...... possibilities for using vision in applications which otherwise would be very difficult to automate. The requirement for low tolerances in production is, despite the huge dimensions of the items involved, extreme. This fact makes great demands on the ability to do robust sub pixel estimation. A new method based...

  18. Industrial Networks

    DEFF Research Database (Denmark)

    Karlsson, Christer

    2015-01-01

    Companies organize in a way that involves many activities that are external to the traditional organizational boundaries. This presents challenges to operations management and managing operations involves many issues and actions dealing with external networks. Taking a network perspective changes...... the focus of operations management from managing the own organization to continuously developing and managing a network of external and internal resources forming a production system. This perspective may be called managing an “extraprise” rather than an “enterprise.” It should be noted that “an industrial...... network” should not be seen as an organizational form but as a perspective that can be used to enrich one's understanding of organizations. The industrial network perspective has three basic building blocks: actors, resources, and activities. The three building blocks and their relations constitute...

  19. Biocombustible y ruido en motores tractores

    OpenAIRE

    Redel-Macias, Maria Dolores

    2012-01-01

    Transport is included among the most important noise sources due to continuous increasing number of vehicles. In order to comply with the European regulations related to both the presence of renewable origin basedfuels and pollution (air and noise) reduction, biodiesel emerges as an excellent alternative. Provided that biodiesel properties are closely correlated with the chemical composition of the raw material used to produce it, this PhD thesis aims to study the effect of ...

  20. Industrial ventilation

    Science.gov (United States)

    Goodfellow, H. D.

    Industrial ventilation design methodology, using computers and using fluid dynamic models, is considered. It is noted that the design of a ventilation system must be incorporated into the plant design and layout at the earliest conceptual stage of the project. A checklist of activities concerning the methodology for the design of a ventilation system for a new facility is given. A flow diagram of the computer ventilation model shows a typical input, the initialization and iteration loop, and the output. The application of the fluid dynamic modeling techniques include external and internal flow fields, and individual sources of heat and contaminants. Major activities for a ventilation field test program are also addressed.

  1. All About ALS

    Science.gov (United States)

    ... please review our exit disclaimer . Subscribe All About ALS Understanding a Devastating Disorder In the summer of ... of research dollars—for a fatal disease called ALS. ALS stands for amyotrophic lateral sclerosis. It’s also ...

  2. Fabrication and study of stability of Ca{sub 2}AlWO{sub 5,5} ceramic in crude petroleum for applications in petroleum industry; Fabricacao e estudo da estabilidade em petroleo cru da ceramica Ca{sub 2}AlWO{sub 5,5} para aplicacao em industria petrolifera

    Energy Technology Data Exchange (ETDEWEB)

    Yadava, Y.P.; Silva, N.D.G.; Sousa, A.G. de; Sanguinetti Ferreira, R.A., E-mail: dea.a@hotmail.co [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Engenharia Mecanica

    2010-07-01

    Perovskite-type ceramic oxides or their derivatives are used for applications in high technology because of their enormous range of physic-chemical properties with little change in structural characteristics. In this paper we report manufacture ceramic components of a new ceramic Ca{sub 2}AlWO{sub 5,5} by thermo-mechanical process. Stoichiometric amounts of chemical constituents with high degree of purity, were homogenized using a ball mill and high purity alumina balls, compacted by uniaxial pressing and annealed at 1200 deg C for 48 hours. The structural characterization studied by x-ray diffraction that this material has a typical complex ordered cubic perovskite structure. For the study the stability of these ceramics in crude petroleum circular discs of 20 mm diameter and 2 mm thickness were produced and sintering. These discs were submerged in crude petroleum for 15, 30 and 45 days and were examined at each stage by X-ray diffraction, optical microscopy and hardness testing and these results show that Ca{sub 2}AlWO{sub 5,5} are stable in crude petroleum environment. (author)

  3. Public Health Assessment of potential hazards in private drinking water wells in the industrial park of Casares (Málaga) Evaluación de riesgos potenciales asociados a las captaciones de aguas de consumo que abastecen al polígono industrial de Casares (Málaga) Avaliação dos riscos potenciais associados às captações de água de consumo que abastecem o parque industrial de Casares (Málaga)

    OpenAIRE

    Piedad Martín-Olmedo; Rocío Fernández Vázquez; Miguel Ángel Pezzi Cereto; Carolina Castellano Calero

    2012-01-01

    This study intends to show the applicability of the Public Health Assessment (PHA) methodology used by the Agency for Toxic Substances and Disease Registry (ATSDR, USA), as a public health tool for prioritizing and systematizing the risk management process related to human exposure to chemicals. Specifically, the potential risk factors that could affect the private drinking water wells in the industrial park of Casares (Málaga) (PIC) have been assessed. The PIC is located close to the Urban S...

  4. Accelerated corrosion behaviors of Zn, Al and Zn/15Al coatings on a steel surface: Pospešeno korozijsko obnašanje Zn, Al in Zn/15Al prekritij na površini jekla:

    OpenAIRE

    Cevher, Ozgur; Gulec, Ahmet; Turk, Ahmet; Ustel, Fatih; Yilmaz, Fevzi

    2011-01-01

    Zn, Al and Zn/15Al coatings can be produced in optimum conditions by the twin wire arc (TWEA) spraying technique. The coatings are used for corrosion protection in a variety of industrial applications. In this study, the accelerated corrosion behavior of Zn, Al and Zn/15Al coatings on a steel surface during the salt-spray testing period was investigated. The surfaces ofsteel coupons were coated with Zn, Al and Zn/15Al using the TWEA spray-deposition system. The corrosion test was performed in...

  5. Industrial radiography

    International Nuclear Information System (INIS)

    Industrial radiography is a non-destructive testing (NDT) method which allows components to be examined for flaws without interfering with their usefulness. It is one of a number of inspection methods which are commonly used in industry to control the quality of manufactured products and to monitor their performance in service. Because of its involvement in organizing training courses in all the common NDT methods in regional projects in Asia and the Pacific and Latin America and the Caribbean and in many country programmes, the Agency is aware of the importance of standardizing as far as possible the syllabi and training course notes used by the many experts who are involved in presenting the training courses. IAEA-TECDOC-628 ''Training Guidelines in Non-destructive Testing'' presents syllabi which were developed by an Agency executed UNDP project in Latin America and the Caribbean taking into account the developmental work done by the International Committee for Non-destructive Testing. Experience gained from using the radiography syllabi from TECDOC-628 at national and regional radiography training courses in the Agency executed UNDP project in Asia and the Pacific (RAS/86/073) showed that some guidance needed to be given to radiography experts engaged in teaching at these courses on the material which should be covered. The IAEA/UNDP Asia and Pacific Project National NDT Coordinators therefore undertook to prepare Radiography Training Course Notes which could be used by experts to prepare lectures for Level 1,2 and 3 radiography personnel. The notes have been expanded to cover most topics in a more complete manner than that possible at a Level 1, 2 or 3 training course and can now be used as source material for NDT personnel interested in expanding their knowledge of radiography. Refs, figs and tabs

  6. El patrimonio industrial como instrumento de revalorización y revitalización del espacio urbano: Aplicación al edificio Caixa Fórum (Madrid / Industrial Heritage as an Instrument for Urban Revaluation. The case of Caixa Fórum (Madrid.

    Directory of Open Access Journals (Sweden)

    Leticia Redondo Gómez

    2011-09-01

    Full Text Available ResumenPese a que el Patrimonio Industrial se encuadra dentro de los denominados emergentes, existen ya numerosos escritos que destacan la conveniencia de su recuperación como forma de progreso económico y social. Con la finalidad de valorar de forma objetiva el efecto real que la recuperación de una vieja industria tiene sobre la revitalización de un entorno, y tomando como base la antigua fábrica de electricidad de Mediodía, se lleva a cabo un estudio teórico-práctico de las variables que influyen tanto en el diseño del edificio en si mismo como en el espacio urbano resultante de tal intervención. El análisis de estos parámetros proporciona un punto de partida que permite concatenar y expandir un proceso que acaba delimitando su verdadera área física de influencia y las repercusiones que de ello se derivan para el ámbito público. Con el fin de evitar la paradoja de rehabilitar recintos que generen a su alrededor zonas desvitalizadas, y partiendo de la premisa de considerar la integración física (construir en contexto como punto clave para la verdadera regeneración de la zona, se asientan las bases para la implantación de políticas enfocadas hacia la dinamización en el ámbito local. Palabras clave Revitalización de barrios, construcciones industriales, dinamización urbana, diseño urbano.Abstract Although the Industrial Heritage falls within the so-called emerging, there are already numerous writings that emphasize the desirability of its recovery as a form of economic and social progress. In order to objectively assess the actual effect the recovery of an old industry has on the revitalization of the environment, and based on the old “Mediodía Electricity Factory”, it is carried out a theoretical and practical study of the variables that influence the design of the building itself as well as the urban space resulting from such intervention. The analysis of these parameters provides a starting point that allows to

  7. Industrial radiographies

    CERN Multimedia

    2005-01-01

    The Radiation Protection group wishes to remind CERN staff responsible for contractors performing X-ray inspections on the CERN sites that the firms must apply the legislation in force in their country of origin, in particular with regard to the prevention of risks relating to ionizing radiation. Industrial radiography firms called on to work on the CERN sites must also comply with the rules laid down in CERN's Radiation Safety Manual and be registered in the relevant CERN database. Since CERN is responsible for safety on its own site, a number of additional rules have been laid down for this kind of work, as set out in Radiation Protection Procedure PRP30 https://edms.cern.ch/file/346848/LAST_RELEASED/PRP30.pdf The CERN Staff Member responsible for the contract shall register the company and issue notification that an X-ray inspection is to be performed via the web interface at the following address: http://cern.ch/rp-radio

  8. Industrial Productivity

    Science.gov (United States)

    1977-01-01

    NASTRAN is an offshoot of the computer-design technique used in construction of airplanes and spacecraft. [n this technique engineers create a mathematical model of the aeronautical or space vehicle and "fly" it on the ground by means of computer simulation. The technique enables them to study performance and structural behavior of a number of different designs before settling on the final configuration and proceeding with construction. From this base of aerospace experience, NASA-Goddard developed the NASTRAN general purpose computer program, which offers an exceptionally wide range of analytic capability with regard to structures. NASTRAN has been applied to autos, trucks, railroad cars, ships, nuclear power reactors, steam turbines, bridges, and office buildings. NASA-Langley provides program maintenance services regarded as vital by many NASTRAN users. NASTRAN is essentially a predictive tool. It takes an electronic look at a computerire$.dedgn and reports how the structure will react under a great many different conditions. It can, for example, note areas where high stress levels will occur-potential failure points that need strengthening. Conversely, it can identify over-designed areas where weight and material might be saved safely. NASTRAN can tell how pipes stand up under strong fluid flow, how metals are affected by high temperatures, how a building will fare in an earthquake or how powerful winds will cause a bridge to oscillate. NASTRAN analysis is quick and inexpensive. It minimizes trial-and-error in the design process and makes possible better, safe, lighter structures affording large-scale savings in development time and materials. Some examples of the broad utility NASTRAN is finding among industrial firms are shown on these pages.

  9. Production of loose insulating materials as material use of industrial remainder wood and small dimensioned wood. Subproject: production of insulating material chips out of industrial planing processes. Final report; Produktion loser Daemmstoffe aus Holzspaenen und -fasern als hoeherwertige stoffliche Nutzung von Industrierestholz und Schwachholz - Lose Daemmstoffe aus Holz. Teilvorhaben: Herstellung von Daemmstoffspaenen aus industriellen Hobelprozessen. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Heisel, U.; Troeger, J.; Pittner, W.

    2003-06-01

    The purpose of the research project consisted in designing industrial planning processes in such a way, that shavings as the by-product are suitable for being used as thermal insulation. The relevant characteristic tool quantities and machine setting parameters were to be optimised with regard to an increased yield in suitable insulating shavings, with the proviso that the surface qualities achieved up to now had to be kept at least. The stability of volume in the component is an essential prerequisite for using the shavings as insulating material. The effect of the individual cutting parameters on the stability of volume was detected with the help of a simple accelerated method of testing. The essential characteristic quantities of the tool and the material were being varied in the framework of the investigations. Most influencing factors show optimal ranges regarding the surface quality of the planed product and the volume stability of the produced shavings. Basing on the characteristic tool quantities determined in this way, an improved tool was realised and tested. In the course of this, it was possible in turn to detect the optimum of the process setting parameters with regard to the quality of the surface and the shavings. The shaving materials available in the result were examined further in the framework of the group project for characterising the material and determining the characteristics concerning building physics. (orig.)

  10. Research proposal: Industry convergence - Driving forces, factors and consequences

    OpenAIRE

    Weaver, Benjamin

    2007-01-01

    Industry convergence – the merger of hitherto separate industries – is a phenomenon that has had a profound effect on several industries and received considerable interest among practitioners and business press over the past decades. Despite this, industry con- vergence has only received limited attention from the academic management field, al- though an emergent discussion on convergence can be identified. Prior research is limited by a lack of coherent theoretical definitions of convergence...

  11. Aussprache als motorische Fertigkeit

    DEFF Research Database (Denmark)

    Bonner, Maria

    2013-01-01

    Authentische Aussprache gilt im Fremdsprachenunterricht als schwer erreichbares Ziel, fremdsprachlicher Akzent wird als nahezu unvermeidbar gesehen. Weder die Hypothese einer kritischen Periode für den Erwerb einer authentischen Aussprache noch das Konzept der Fossilierung im Sprachlernprozess...

  12. Amyotrophic Lateral Sclerosis (ALS)

    Science.gov (United States)

    ... benefit of 16 months before onset of severe respiratory failure. Other treatments are designed to relieve symptoms and ... of ALS. Most people with ALS die from respiratory failure, usually within 3 to 5 years from the ...

  13. Initial Symptoms of ALS

    Science.gov (United States)

    ... Chapters Certified Centers and Clinics Support Groups About ALS About Us Our Research In Your Community Advocate ... Diagnosis En español Symptoms The initial symptoms of ALS can be quite varied in different people. One ...

  14. Porter's Industry Clusters in Irish Indigenous Industry

    OpenAIRE

    Chris van Egeraat; Eoin O'Malley

    1999-01-01

    Studies by Porter (1990) and others find that competitive and successful industries usually occur in the form of clusters of industries which are linked together through vertical or horizontal relationships. This paper assesses whether the sectors of Irish indigenous industry which look most competitive and successful form such clusters. It is concluded that there is only limited or qualified evidence of Porter-type clusters in Irish indigenous industry but, despite this, there has been a rel...

  15. Trajectory for Industrial Upgrade

    Institute of Scientific and Technical Information of China (English)

    LIU YUNYUN

    2010-01-01

    @@ The Ministry of Industry and Information Technology (MIIT) ordered the closure of outdated production lines in 18 industries as part of the country's plan to upgrade its industrial structure and move up the value chain.

  16. Trajectory for Industrial Upgrade

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The Ministry of Industry and Information Technology(MIIT) ordered the closure of outdated production lines in 18 industries as part of the country’s plan to upgrade its industrial structure and move up the

  17. Boosting Cultural Industry

    Institute of Scientific and Technical Information of China (English)

    Li Zhen

    2009-01-01

    @@ On July 22 of 2009, the State Council released the Revitalization Plan of Cultural Industry, which is the 11th revitalization plan for an industry following plans for steel, auto, textile, equipment manufacturing, ship-making, IT and other industries.

  18. Chemicals Industry Vision

    Energy Technology Data Exchange (ETDEWEB)

    none,

    1996-12-01

    Chemical industry leaders articulated a long-term vision for the industry, its markets, and its technology in the groundbreaking 1996 document Technology Vision 2020 - The U.S. Chemical Industry. (PDF 310 KB).

  19. Wear characteristics of Al-AlN composites produced in-situ by nitrogenation

    Science.gov (United States)

    Pradhan, S.; Jena, S. K.; Patnaik, S. C.; Swain, P. K.; Majhi, J.

    2015-02-01

    In the present scenario most of the parts used in automobile and aerospace industries are made of composites. Aluminium metal has a very high strength to weight ratio. Al-AlN metal matrix composites have excellent mechanical properties like good wear resistance, high hardness and high strength to weight ratio which are obtained from low density of aluminium and high hardness and wear resistance of AlN. Therefore, use of Al-AlN MMC leads to advantages in automobile industries as it reduces fuel consumption and gives better structural strength. The composites can be produced ex-situ by introducing AlN as reinforcement into the metal matrix and in- situ by nitrogenation process. In the present process Al-AlN composites were fabricated by treating molten aluminium with a mixture of CaO and NH4Cl and held at temperature range at 750-930°C and then cast into a metal mould. Addition of CaO to NH4Cl is found to have a more pronounced effect as a nitrogenation agent in comparison with NH4Cl in the molten aluminium in the temperature range of 700- 1000°C. Castings of aluminium and Al-AlN composites were prepared by mixing different ratios of aluminium and NH4Cl, at different casting temperatures and holding time. Wear resistance and hardness of the samples were determined, and microstructure studies were carried out. The composite formed using higher amount of NH4Cl had higher hardness and wear resistance.

  20. La regulación de la protección frente al riesgo por agentes físicos

    Directory of Open Access Journals (Sweden)

    G Repetto

    2008-01-01

    Full Text Available Aunque el toxicólogo se preocupa principalmente de los efectos nocivos de las sustancias químicas, no puede inhibirse de considerar las acciones y efectos de los agentes físicos sobre los seres vivos, ya que también son objeto de interés de la Toxicología, tanto por su interacción directa con las biomoléculas como por influir en las acciones de las sustancias químicas sobre los sistemas biológicos. Esta preocupación también llega al legislador que ha elaborado diferentes tipos de normativas que persiguen la protección de la salud humana y el medio ambiente. Los agentes físicos lesivos y tóxicos suelen agruparse según el tipo de energía en que se manifiesten: la energía mecánica, en forma de ruido y vibraciones; la energía calorífica; la presión y la gravedad; y la energía electromagnética, en la que se distinguen radiaciones ionizantes y no ionizantes. Las radiaciones ionizantes son las más peligrosas, siendo sus principales ámbitos normalizados la protección sanitaria de la población o de los trabajadores, el control de las exposiciones en usos médicos, de los traslados de sustancias radiactivas, de las fuentes radiactivas selladas de actividad elevada y de las fuentes huérfanas y de la contaminación de aguas y alimentos, así como la conservación de alimentos por irradiación. Las regulaciones sobre campos electromagnéticos persiguen la protección del público en general y de los trabajadores frente al riesgo eléctrico y electromagnético, la armonización del espectro radioeléctrico, la protección del dominio público radioeléctrico y el control de los equipos. La radiación ultravioleta es la más peligrosa de las radiaciones ópticas, por lo que se controla tanto la exposición solar como la de fuentes artificiales, incluyendo los aparatos de bronceado. El ruido, de interés en ototoxicología y salud ambiental, se encuentra regulado tanto en el ámbito ocupacional como en el ambiental. Las vibraciones

  1. Reducción de los niveles sonoro y térmico en la nave de soplado de Industria Jabonera Lina, S.A.

    OpenAIRE

    Fenoll Aledo, David

    2008-01-01

    El Objetivo del presente proyecto es reducir los niveles de ruido y las altas temperaturas a las que están expuestos los trabajadores, en sus puestos de trabajo, en la sección de soplado por las siguientes razones: El ruido afecta al hombre físicamente, psicológicamente y sociológicamente. El ruido puede dañar el oído, interferir la comunicación, causar molestias, producir cansancio y reducir la eficiencia. Los ruidos intensos o la permanencia, durante largo tiempo en un amb...

  2. Volver al desarrollo

    Directory of Open Access Journals (Sweden)

    Jaime Ornelas Delgado

    2012-01-01

    Full Text Available El desarrollo, categoría empleada para expresar el crecimiento económico, surge durante la "guerra fría" y si bien fue propuesta por teóricos metropolitanos, se asumió en Latinoamérica como parte de los instrumentos disponibles para lograr el crecimiento y alternativa al socialismo. El desarrollo mantuvo su vigencia entre 1945 y 1975, cuando al advenimiento del neoliberalismo fue paulatinamente retirado de la agenda de las preocupaciones nacionales e internacionales. Al iniciarse el siglo xxi, el fracaso del mercado autorregulado trajo de nueva cuenta al debate los problemas del desarrollo, lo que obliga a revisarlo críticamente, tanto como al concepto mismo para mostrar su carácter colonial, si se quiere construir caminos ajenos al neoliberal y superar los problemas que han hecho de Latinoamérica una de las regiones más desiguales del mundo.

  3. INDUSTRI KREATIF INDONESIA: PENDEKATAN ANALISIS KINERJA INDUSTRI

    Directory of Open Access Journals (Sweden)

    Ahmad Kamil

    2015-10-01

    Full Text Available In 2008, the Department of Commerce of the Republic of Indonesia has launched a creative economic development documents interpreted the 2025 Indonesia became the starting point and guide the development of the creative economy in Indonesia. With the existence of this document, the industry and its stakeholders or other stakeholders can readily develop the creative economy in Indonesia. Economic development in the direction of the creative industries is one manifestation of optimism aspiration to support the Master Plan for the Acceleration and Expansion of Indonesia's Economic Development in realizing the vision of Indonesia are being developed nation. The main objective of this study is the first to analyze the role of the creative industries in Indonesia for labor, value added and productivity, secondly, to analyze the performance trend of the creative industries sector, and third, to analyze the factors affecting the performance of the creative industries sector in Indonesia. Under Indonesia Standard Industrial Classification (ISIC and codes 151-372 (manufacturing industries category identified 18 industry groups belonging to the creative industries, showed that the performance of the national creative industries has been relatively high (in terms of trend analysis of the performance of the industrial creative. Furthermore, regression analysis of panel data (econometrics indicates that company size (SIZE, wages for workers (WAGE and the content of local inputs (LOCAL has a significant impact on the performance of Indonesia's creative industry. Meanwhile, the concentration ratio (CR4 no consequences but have koresi significantly positive effect on the performance of Indonesia’s creative industry.

  4. Jalta als Heterotopie

    OpenAIRE

    Schmid, Ulrich

    2013-01-01

    Jalta ist ein Ort, der sich im europäischen Kulturgedächtnis sowohl historisch als auch literarisch als "radikal anderer Ort" - als " Heterotopie" - festgesetzt hat. An der Konferenz von Jalta wurde 1945 eine neue Weltordnung geschaffen in der Hoffnung auf eine bessere Welt. Auch in den Werken von Anton ?echov, vor allem in denjenigen, die in Jalta entstanden sind, wird von einer anderen und besseren Welt geträumt.

  5. Pornographie als Metapher

    Directory of Open Access Journals (Sweden)

    Caroline Schubarth

    2010-02-01

    Full Text Available In diesem Artikel werden unterschiedliche metaphorische Verwendungen des Pornografiebegriffs und deren Implikationen untersucht. Während die Existenz von Pornografie der feministischen Anti-Porno-Bewegung als Erklärung für die anhaltende Diskriminierung von Frauen in westlichen Gesellschaften dient, nutzen rechtskonservative Kräfte den Pornografievorwurf als Rechtfertigung für die Zensur von als deviant empfundenen Identitäten und sexuellen Praktiken.

  6. Pornographie als Metapher

    OpenAIRE

    Caroline Schubarth

    2010-01-01

    In diesem Artikel werden unterschiedliche metaphorische Verwendungen des Pornografiebegriffs und deren Implikationen untersucht. Während die Existenz von Pornografie der feministischen Anti-Porno-Bewegung als Erklärung für die anhaltende Diskriminierung von Frauen in westlichen Gesellschaften dient, nutzen rechtskonservative Kräfte den Pornografievorwurf als Rechtfertigung für die Zensur von als deviant empfundenen Identitäten und sexuellen Praktiken.This article...

  7. Sobre Al-Qarmuniyya

    OpenAIRE

    Fierro Bello, María Isabel

    1990-01-01

    [ES] En dos tradiciones escatológicas relativas a al-Andalus y recogidas por 'Abd al-Malik h Haha en su Ta'rg se hace referencia a Carmona. La mención de esta ciudad en dichas tradiciones debe ser puesta en relación con dos episodios de la historia de al-Andalus que tuvieron lugar antes de la muerte de Ibn Habib: la batalla de Carmona en época de 'Abd al-Rahman y la concentración de tropas omeyas en el mismo lugar durante el ataque normando en los años 229-30/844-5.

  8. New challenges and opportunities for industrial biotechnology

    Directory of Open Access Journals (Sweden)

    Chen Guo-Qiang

    2012-08-01

    Full Text Available Abstract Industrial biotechnology has not developed as fast as expected due to some challenges including the emergences of alternative energy sources, especially shale gas, natural gas hydrate (or gas hydrate and sand oil et al. The weaknesses of microbial or enzymatic processes compared with the chemical processing also make industrial biotech products less competitive with the chemical ones. However, many opportunities are still there if industrial biotech processes can be as similar as the chemical ones. Taking advantages of the molecular biology and synthetic biology methods as well as changing process patterns, we can develop bioprocesses as competitive as chemical ones, these including the minimized cells, open and continuous fermentation processes et al.

  9. Athletic Apparel Industry Analysis

    Institute of Scientific and Technical Information of China (English)

    JIE; TAN; NAFISUL; ISLAM; MILAN; MITRASINOVIC

    2015-01-01

    Industry Overview The athletic apparel industry is the fastest growing segment of global clothing industry differentiated by offering high quality athletic apparel made of technically advanced fabrics.The athletic apparel is made for a variety of sports and physical activities for children,men and women and enhances comfort and performance of athletes.The industry consists of companies that design and market

  10. Automotive Industry in Malaysia

    DEFF Research Database (Denmark)

    Wad, Peter; Govindaraju, V.G.R. Chandran

    2011-01-01

    This paper explains the evolution and assesses the development of the Malaysian automotive industry within the premise of infant industry and trade protection framework as well as extended arguments of infant industry using a global value chain perspective. The Malaysian automotive industry...

  11. Opportunities for Taiwan's industry

    OpenAIRE

    Jen-Lien Lin; Guang-Way Jang

    2004-01-01

    The Industrial Technology Research Institute (ITRI) in Taiwan recently introduced nanotechnology to local traditional industries. Nanotechnologies provide a great opportunity for these companies to meet outside challenges and join the blooming electronic and optoelectronic industries. The Nanotechnology Community (NTC) was established in 2003, with the goal of finding commercial applications. This year, the Taiwan Nanotechnology Industrialization Promotion Association (TANIPA) was established...

  12. Overview of the development of FeAl intermetallic alloys

    Energy Technology Data Exchange (ETDEWEB)

    Maziasz, P.J.; Liu, C.T.; Goodwin, G.M.

    1995-09-01

    B2-phase FeAl ordered intermetallic alloys based on an Fe-36 at.% Al composition are being developed to optimize a combination of properties that includes high-temperature strength, room-temperature ductility, and weldability. Microalloying with boron and proper processing are very important for FeAl properties optimization. These alloys also have the good to outstanding resistance to oxidation, sulfidation, and corrosion in molten salts or chlorides at elevated temperatures, characteristic of FeAl with 30--40 at.% Al. Ingot- and powder-metallurgy (IM and PM, respectively) processing both produce good properties, including strength above 400 MPa up to about 750 C. Technology development to produce FeAl components for industry testing is in progress. In parallel, weld-overlay cladding and powder coating technologies are also being developed to take immediate advantage of the high-temperature corrosion/oxidation and erosion/wear resistance of FeAl.

  13. Opportunities for Taiwan's industry

    Directory of Open Access Journals (Sweden)

    Jen-Lien Lin

    2004-12-01

    Full Text Available The Industrial Technology Research Institute (ITRI in Taiwan recently introduced nanotechnology to local traditional industries. Nanotechnologies provide a great opportunity for these companies to meet outside challenges and join the blooming electronic and optoelectronic industries. The Nanotechnology Community (NTC was established in 2003, with the goal of finding commercial applications. This year, the Taiwan Nanotechnology Industrialization Promotion Association (TANIPA was established, with the support of the Industrial Development Bureau, Ministry of Economic Affairs (MOEA, to formulate a strategy for industrial applications in Taiwan and to facilitate cooperation between industries, universities, and research institutes.

  14. Edificio industrial, en Kuwait

    Directory of Open Access Journals (Sweden)

    Farmer y Dark, Arquitectos

    1963-11-01

    Full Text Available Kuwait as had a considerable increase both in income and in population over the past few years. Its climate is hot and dry and it has a very low rainfall. Hence it is particularly important for this country to have a steady supply of water and electricity. To meet this need, large power stations have been built. Power station A is one of the various sources which provide Kuwait with electric power. It has four turboalternator units. Inside the building, a system of airconditioning has been developed, at such pressure and air speed that it will counteract outer climatic conditions and prevent the entry of sand particles into the power station during the frequent sandstorms. The external appearance of the power station has been carefully studied in order to bring it as much as possible into harmony with the surrounding buildings. The outline is audacious and irregular, seeking to obtain a variety of profiles and light and shade effects. It creates an impression that is reminiscent of the local mud structures, of simple and primitive shape, broken and rounded by the prolonged action of weather. Inside, the colour schemes are cool and relaxing whilst on the outside only those parts have been painted which are not likely to suffer the full effect of the sun. The overall effect of this building is pleasing, well in accordance with its strictly industrial function, and it is not lacking in many design refinement to cater for the sensibility of the staff that is to work in it for many hours every day, such at the balcony overlooking the sea, the pond and the garden zone round the entrance.Kuwait, Estado independiente situado al noroeste de Arabia, a la altura del Golfo Pérsico, ha experimentado, en los últimos años, un aumento considerable de población. El clima es cálido y seco, y las precipitaciones lluviosas, escasas. Es fácil deducir la importancia vital que representa, aquí el suministro regular de agua y electricidad, que ha traído como

  15. Study of environmental noise in a BWR plant like the Nuclear Power Plant Laguna Verde; Estudio de ruido ambiental en una planta BWR como la Central Nuclear Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Tijerina S, F.; Cruz G, M.; Amador C, C., E-mail: francisco.tijerina@cfe.gob.mx [Comision Federal de Electricidad, Central Nucleoelectrica Laguna Verde, Subgerencia de Ingenieria, Carretera Cardel-Nautla Km. 42.5, Alto Lucero, Veracruz (Mexico)

    2013-10-15

    In all industry type the health costs generated by the noise are high, because the noise can cause nuisance and to harm the capacity to work when causing tension and to perturb the concentration, and in more severe cases to reach to lose the sense of the hearing in the long term. The noise levels in the industry have been designated for the different types of use like residential, commercial, and industrial and silence areas. The noise can cause accidents when obstructing the communications and alarm signs. For this reason the noise should be controlled and mitigated, at a low level as reasonably is possible, taking into account that the noise is an acoustic contamination. The present study determines a bases line of the environmental noise levels in a nuclear power plant BWR-5 as Laguna Verde, (like reference) to be able to determine and to give pursuit to the possible solutions to eliminate or to limit the noise level in the different job areas. The noise levels were registered with a meter of integrative noise level (sonometer) and areas of noise exposure levels mapping the general areas in the buildings were established, being the registered maximum level of 96.94 dba in the building of the Reactor-elevation 0.65 m under the operation conditions of Extended Power Up rate (EPU) of 120% PTN. Knowing that the exposition to noises and the noise dose in the job place can influence in the health and in the safety of the workers, are extensive topics that they should be analyzed for separate as they are: to) the effects in the health of the exposure to the noise, b) how measuring the noise, c) the methods and technologies to combat and to control the noise in the industry by part of engineering area and d) the function of the industrial safety bodies as delegates of the health and safety in the task against the noise in the job. (author)

  16. Input chains and industrialization

    OpenAIRE

    Ciccone, Antonio

    2000-01-01

    A key aspect of industrialization is the adoption of increasing-returns-to-scale, industrial, technologies. Two other, well-documented aspects are that industrial technologies are adopted throughout intermediate-input chains and that they use intermediate inputs intensively relative to the technologies they replace. These features of industrial technologies combined imply that countries with access to similar technologies may have very different levels of industrial...

  17. Diagnosis on Exhibition Industry

    Institute of Scientific and Technical Information of China (English)

    Yan Manman

    2010-01-01

    @@ China's exhibition industry, often renowned as the locomotive of the tertiary industry, has developed rapidly in recent years and has become the sunrise industry and gets much concern. However, in exhibition industry circles in China, there is a saying being passed around "rushed exhibitions with bad service, property rights protection is badly needed; a low threshold with high demand, and 5 out of 10 exhibitions are disorganized." This jingle reflects many problems that currently exist in the exhibition industry in China.

  18. Modelo predictivo del espesor de la capa de óxido y microdureza en aluminio Al3003-B14 y Al6063-T6 anodizado usando análisis multifactorial Oxide film thickness and microhardness prediction model of Al3003-B14 and Al6063-T6 anodized aluminum using multifactorial analysis

    Directory of Open Access Journals (Sweden)

    Leonardo Eladio Vergara Guillén

    2011-08-01

    Full Text Available En esta investigación se modela a partir de los parámetros del proceso el espesor de la capa de óxido y la microdureza de los aluminios Al3003 y Al6063 anodizados. Para ello se realizaron estudios de la microdureza y espesor de capa de la superficie anodizada, utilizando técnicas de análisis multifactorial y diseño robusto. Se establecieron los siguientes niveles de los parámetros del proceso: temperatura [15 °C, 25 °C], tiempo [30 min; 60 min], concentración de electrolito [1,2 M; 2 M], densidad de corriente [1 Amp/dm²; 3 Amp/dm²], aluminio [Al3003,Al6063] y como variable de ruido, la deformación plástica [0%, 10%, 20%, 30%]. Se propuso un diseño fraccionado 2(7-2 mixto, con el cual se efectuó un total de 48 pruebas usando soluciones electrolíticas de ácido sulfúrico. La medición de microdureza se realizó con un indentador Vickers con carga de 400 g; el espesor de la capa de óxido se captó mediante microscopia electrónica. A los resultados se les realizó un análisis de varianza (ANOVA, para determinar los factores significativos y la robustez de los efectos. Se encontraron resultados de microdureza [HV] [85,74-308,87]; y espesor de óxido [µm] [12,82- 94,69]. Finalmente, se muestran los modelos de predicción de cada una de las respuestas en función de los factores significativos estas ecuaciones permitirán seleccionar la microdureza y espesor de la capa de óxido para cumplir los requerimientos de un producto particular mediante una selección apropiada de los parámetros del proceso.In this research, the thickness of the oxide layer and the microhardness of anodized aluminum Al3003 and Al6063 are modeled based on process parameters. To this end, studies of the microhardness and the thickness layer of the anodized surface were made, via techniques of multifactorial analysis and robust design. The following levels of the process parameters were established: temperature [15°C, 25°C], time [30min; 60min

  19. Al-Anon/Alateen

    Science.gov (United States)

    Find an Al-Anon meeting Español | Français 2018 Int'l Convention Home About Group Meetings What If I'm not ready ... a meeting? What can I expect at an Al-Anon meeting? What was my first meeting like? ...

  20. Impact of a participatory program to reduce noise in a Neonatal Unit Impacto de un programa participativo de reducción de ruido en una unidad neonatal Impacto de um programa participativo de redução do ruído em unidade neonatal

    Directory of Open Access Journals (Sweden)

    Nelma Ellen Zamberlan-Amorim

    2012-02-01

    Full Text Available This study evaluated the impact of a participatory program to reduce noise in a neonatal intermediate care unit of a university hospital. A time-series quasi-experimental design was used, in which sound pressure levels were measured before and after the intervention was implemented using the Quest-400 dosimeter. Non-parametric statistical tests were used to compare noise with the level of significance fixed at 5%. Results showed significant reduction of sound pressure levels in the neonatal unit after the intervention program was implemented (pEl objetivo fue evaluar el impacto de un programa participativo en la reducción del ruido ambiente en una unidad neonatal de un hospital universitario. Se utilizó delineamiento casi-experimental del tipo tiempo-serie, en el cual los niveles de presión sonora fueron mensurados antes y después de la implantación del programa de intervención, utilizando el dosímetro Quest-400. Para el análisis comparativo del ruido, se utilizaron las pruebas estadísticas no paramétricas (α=0,05. Se constató reducción significativa de los niveles de presión sonora de la unidad neonatal después de la implantación del programa de intervención (pO objetivo deste estudo foi avaliar o impacto de um programa participativo na redução do ruído ambiente em uma unidade neonatal, de um hospital universitário. Utilizou-se delineamento quase-experimental do tipo tempo-série, no qual os níveis de pressão sonora foram dimensionados antes e após a implantação do programa de intervenção, utilizando o dosímetro Quest-400. Para a análise comparativa do ruído, utilizaram-se os testes estatísticos não-paramétricos (α=0,05. Constatou-se redução significativa dos níveis de pressão sonora da unidade neonatal, após a implantação do programa de intervenção (p<0,0001. O Leq médio foi de 62,5dBA antes da intervenção e reduziu para 58,8dBA após a intervenção. Houve redução de 7,1dBA no Lmax médio (de

  1. Industrial initiatives in the wind industry

    International Nuclear Information System (INIS)

    Industrial initiatives are methods of lobbying and marketing to increase the activity, revenues, profits, and commercial viability of an industry. They may be undertaken by industry individuals or firms, industry groups, government agencies, or combinations of all these. In Canada, one example of an industrial initiative is the Canadian Wind Energy Association. Other initiatives relevant to the wind power industry include Technology Inflow Programs sponsored by External Affairs Canada, used for visiting foreign firms with the view to licensing foreign technology, and Industrial Research Assistance Programs to develop or adapt new technologies in partnership with government. The Conservation/Renewable Energy Council, Small Power Producers of Alberta, and Independent Power Producers Society of Ontario are also active in supporting wind energy initiatives. In other countries, notable initiatives for wind energy include the Danish wind turbine warranty guarantee program. The Western Wind Industry Network of Canada conducts regional lobbying. It is suggested that in Canada, more such networks are needed, as well as joint ventures with utilities and governments, and more work with the regulatory agencies, to promote wind energy

  2. Prevalencia de la pérdida auditiva y factores correlacionados en una industria cementera Prevalence and correlates of hearing loss

    Directory of Open Access Journals (Sweden)

    Sendy Isarel Hernández-Gaytán

    2000-04-01

    Full Text Available OBJETIVO: Documentar el impacto de la exposición laboral al ruido, así como sus relaciones con otros factores que pueden inducir pérdidas auditivas. MATERIAL Y MÉTODOS: Durante enero y febrero de 1997 se llevó a cabo un estudio transversal en una planta productora de cemento en el estado de Morelos. Se realizaron una sonometría, dosimetría y pruebas audiométricas a 85 trabajadores para identificar las fuentes que generan ruido en las áreas de proceso, evaluar los niveles de ruido en dichas áreas (monitoreo de área y de personal y para determinar la prevalencia de pérdida auditiva inducida por el ruido entre los trabajadores. Para el análisis estadístico se emplearon medidas de tendencia central, análisis bivariado y modelos de regresión politómica. RESULTADOS: En las áreas de trituración, molinos de crudo y molinos de cemento se encontraron niveles elevados de ruido. La dosis personal más alta correspondió al puesto de envasador. En 55% de la población estudiada se presentó pérdida auditiva inducida por el ruido, y el área de proceso con el porcentaje más alto de pérdida auditiva inducida por el ruido fue la de calcinación, con 85%. CONCLUSIONES: Los resultados mostraron que el ruido es un serio riesgo en algunas áreas, y que algunos casos de pérdida auditiva inducida por el ruido hayan sido desarrollados por exposición ocupacional en esta industria. Se sugiere el diseño e implantación de un programa de conservación de la audición para proteger la salud y seguridad de los trabajadores.OBJECTIVE: To assess the impact of occupational exposure to noise, as well as its relationship with other factors that can induce hearing loss. MATERIAL AND METHODS: In January and February 1997, we conducted sonometry and dosimetry tests in a cement factory, as well as audiometric test in 85 cement workers, to identify sources of noise and evaluate the effect to noise exposure and other factors, of the prevalence of occupational

  3. Which Move to the Middle: Industry Consortia or Private Exchanges?

    OpenAIRE

    Susan A. Sherer; Yuliang Yao

    2006-01-01

    The move-to-the-middle hypothesis has been used to predict firm structures, suggesting that firms will move to more outsourcing but from a reduced set of stable partners (Clemons et al., 1993). Extending this hypothesis to predict electronic marketplace structures, we suggest that both industry consortia and private exchanges represent a move to the middle by reducing transaction costs and risks. In industries with highly interdependent relationships, industry consortia may be more successful...

  4. DESARROLLO DE MODELOS DE COMPORTAMIENTO ACÚSTICO Y CARACTERIZACIÓN EXPERIMENTAL DE MATERIALES ELABORADOS CON ALIGERANTES PARA LA CONSTRUCCIÓN. APLICACIÓN A SISTEMAS DE CONTROL DE RUIDO.

    OpenAIRE

    Esquerdo Lloret, Tomás Vicente

    2016-01-01

    [EN] The work presented here focuses on the study of the acoustic behavior of rigid structure granular materials derived from natural products. Lightening materials are employed in construction. Severals products are extracted directly from quarry, being processed in industrial treatment plants to obtain the required properties. These materials do not contribute to environmental pollution from the point of view of the product nature. Products as arlite and vermiculite are available in the mar...

  5. Digresión sobre el espacio sonoro. En torno a la naturaleza intrusiva del ruido Digression on the sound space. Regarding the intrusive nature of noise Digressão sobre o espaço sonoro. Em torno da natureza intrusiva do ruído

    Directory of Open Access Journals (Sweden)

    Ana Lidia M. Domínguez Ruiz

    2011-06-01

    Full Text Available Resumen:Este trabajo forma parte de una investigación doctoral en proceso titulada La naturaleza sonora de la vida urbana: ruido y vida cotidiana en la ciudad de México, cuyo objetivo es abordar, desde la perspectiva antropológica, esa relación fuertemente arraigada en el imaginario entre el ruido y el modo de vida urbano. En el marco de esta investigación, la discusión sobre del concepto de espacio privado tiene un papel primordial, pues en este ámbito de la vida social se fragua la naturaleza intrusiva del ruido y se constituye como problema (físico, subjetivo y social. El presente texto es una discusión teórica que prepara el análisis de la información de campo, sobre la manera en que la naturaleza espacial del elemento sonoro desestabiliza el cumplimiento de las funciones ideales del espacio privado.This article is part of a wider PhD research entitled The acoustic nature of the urban life: noise and daily life in Mexico City. Its goal is to raise, from an anthropological approach, the relationship (deeply rooted between the noise and the urban way of life. In this framework, the discussion on the concept of private space plays a fundamental role, since is in this field of social life where the intrusive nature of noise emerges, and constitutes itself as a physical, social and subjective problem. This text is a theoretical discussion, based on ethnographic data, about the form in which the special nature of the acoustic elements destabilizes the fulfillment of the ideal of privacy.Abstract:This paper is part of a doctoral research entitled ‘The sound nature of urban life: noise andeveryday life in Mexico City’ whose main goal is approaching to the relationship between the imaginary of noise and urban lifestyle from an anthropological perspective. The discussion on private space concept is essential in this research because the intrusive nature of noise is built in this social life field and becomes a (physical, subjective and

  6. [Environmental factors in ALS].

    Science.gov (United States)

    Juntas-Morales, Raul; Pageot, Nicolas; Corcia, Philippe; Camu, William

    2014-05-01

    ALS is likely to be a disorder of multifactorial origin. Among all the factors that may increase the risk of ALS, environmental ones are being studied for many years, but in the recent years, several advances have pointed to a new interest in their potential involvement in the disease process, especially for the cyanotoxin BMAA. Food containing BMAA has been found on Guam, a well-known focus of ALS/parkinsonism/dementia and high levels of BMAA have been identified into the brain of these patients. The BMAA cyanotoxin is potentially ubiquitous and have also been found into the food of patients who died from ALS both in Europe and USA. BMAA can be wrongly integrated into the protein structure during mRNA traduction, competing with serine. This may induce abnormal protein folding and a subsequent cell death. Heavy metals, such as lead or mercury may be directly toxic for neuronal cells. Several works have suggested an increased risk of ALS in individuals chronically exposed to these metals. Exposure to pesticides has been suggested to be linked to an increased risk of developing ALS. The mechanism of their toxicity is likely to be mediated by paraoxonases. These proteins are in charge of detoxifying the organism from toxins, and particularly organophosphates. To date, there are insufficient scientific data to suggest that exposure to electromagnetic fields may increase the risk of having ALS. We are particularly missing longitudinal cohorts to demonstrate that risk. PMID:24703731

  7. Industrial communication technology handbook

    CERN Document Server

    Zurawski, Richard

    2005-01-01

    The Industrial Communication Technology Handbook focuses on current and newly emerging communication technologies and systems that are evolving in response to the needs of industry and the demands of industry-led consortia and organizations.Organized into two parts, the text first summarizes the basics of data communications and IP networks, then presents a comprehensive overview of the field of industrial communications. This book extensively covers the areas of fieldbus technology, industrial Ethernet and real-time extensions, wireless and mobile technologies in industrial applications, the

  8. Sociale media als leermiddel

    NARCIS (Netherlands)

    Rubens, Wilfred

    2012-01-01

    Rubens, W. (2012, 5 juni). Sociale media als leermiddel. Presentatie over het gebruik van sociale media binnen het onderwijs, verzorgd tijdens een ouderraadbijeenkomst van de Katholieke Scholengemeenschap Etten-Leur, Etten-Leur, Nederland.

  9. MDA ALS Caregiver's Guide

    Science.gov (United States)

    ... R.D., C.N.S.D., L.D.N. Nutritionist MDA/ALS Center at Vanderbilt University Medical Center ... neurologists, physiatrists, therapists (physical, occupa- tional, speech, respiratory), nutritionists, social work- ers, pulmonologists, gastroenterologists and medical equipment ...

  10. Regionale Herkunft als Bonus

    OpenAIRE

    Kratochvil, Dr. Ruth

    2004-01-01

    Der Bio-Sektor durchlebt bewegte Zeiten. Die biologische Landwirtschaft hat sich aus der Nische herausbewegt und dafür an „Besonderheiten“ eingebüßt. Diese müssen als Zusatznutzen wiedergefunden werden.

  11. An Emerging Pillar Industry

    Institute of Scientific and Technical Information of China (English)

    LI ZHENYU

    2010-01-01

    @@ The Fifth Beijing International Cultural and Creative Industry Exposition (ICCIE), held November 17-21 in Beijing, was a feast for the eyes and mind. It showcased the enormous glamour and commercial opportunities promised by the cultural and creative industry.

  12. FERMILAB: Working with industry

    International Nuclear Information System (INIS)

    Highlighting the increasing interplay between high energy physics and industry, this year's annual meeting of Fermilab's Industrial Affiliates featured two roundtable discussions on new technology related to high energy physics

  13. The World Oil Industry

    Science.gov (United States)

    Rand, Christopher T.

    1976-01-01

    America's domestic petroleum industry and the international industry have been dominated by seven major firms. Although production costs decreased, sale prices soared with developing political-corporate interrelationships. (MR)

  14. Industry Lecture 2010

    DEFF Research Database (Denmark)

    Kragh, Helge

    2010-01-01

    Sammendrag af "Industry Lecture", Norsk Kjemisk Selskap, Universitetet i Oslo, givet 15/10 2010.......Sammendrag af "Industry Lecture", Norsk Kjemisk Selskap, Universitetet i Oslo, givet 15/10 2010....

  15. Factores asociados al bajo peso al nacer

    OpenAIRE

    Georgina J Peraza Roque; Silvia de la C Pérez Delgado; Zoe de los A Figueroa Barreto

    2001-01-01

    El bajo peso al nacer (BPN) ha constituido un enigma en la ciencia a través de los tiempos. Múltiples son las investigaciones realizadas acerca de las causas que lo producen y las consecuencias que provoca. Su importancia no solo radica en lo que significa en la morbilidad y la mortalidad infantil, sino que estos niños tienen habitualmente múltiples problemas posteriores. El Programa para la Reducción del BPN señala que los niños nacidos con un peso inferior a los 2 500 g presentan riesgo de ...

  16. Reseña del libro: Márquez Estrada, José Wilson. 2012. El Tranvía Eléctrico de Medellín: 1920-1951. Su aporte al proceso de modernización Urbana. Saarbrücken- Alemania: Editorial Académica Española. ISBN: 978-3-659-01680-6.

    Directory of Open Access Journals (Sweden)

    Cano Vargas Alexander

    2013-12-01

    Full Text Available Este libro recoge lo fundamental de la monografía de grado, que el autor presentó en la Facultad de Ciencias Humanas de la Universidad Nacional de Colombia, sede Medellín en abril de 2001 para optar el título de Magister en historia la cual fue dirigida por el profesor-investigador Fernando Botero Herrera. En América Latina desde la segunda mitad del siglo XIX, la vida aldeana se vio sacudida por los influjos de la Revolución Industrial, que transformó definitivamente la historia del transporte en esta parte del mundo. Colombia no fue ajena a esta influencia y con igual ruido se sintieron los influjos de la revolución industrial. En el campo de los transportes, se introdujeron la navegación a vapor por el río magdalena, y los ferrocarriles; también aparecieron telégrafos, alumbrado público y el servicio de correo. Este proceso transformó la vida urbana, especialmente en las primeras tres décadas del siglo XX, cuando las ciudades principales como Bogotá, Medellín y Cali experimentaron una verdadera transformación de su morfología urbana. El autor presenta un caso de ellos: el tranvía en Medellín.

  17. Partizipation als Ausnahmezustand

    OpenAIRE

    Korf, Benedikt

    2009-01-01

    In «Die Erfindung des Politischen» (1993) beschreibt Ulrich Beck Subpolitik als den Ort, an dem die Grenze zwischen Politik und Nichtpolitik verschwindet. Aus der zunehmenden Wirkkraft von Subpolitik erwächst die grundlegende Frage, mit welcher Legitimation diese Art von Subpolitik in die Sphäre der institutionalisierten Politik eindringt. Beck’s Subpolitik soll im Anschluss an theoretische Arbeiten von Chantal Mouffe und Giorgio Agamben als post-politische Aspiration bezeichnet werden, die e...

  18. Innovation and Industrial Strategy

    OpenAIRE

    Haustein, H.-D.

    1981-01-01

    The conditions and consequences of industrial development are currently being widely discussed. One reason for this attention is the marked decline in industrial growth rates in many countries of the world, including those with low levels of industrialization. Aware that the successful management of innovation might be a cornerstone in solving the problem of industrial growth in both the market and planned economies, the members of IIASA's Innovation Management Task held a task force mee...

  19. Conditions for industrial production

    DEFF Research Database (Denmark)

    Jensen, Karsten Ingerslev; Schultz, Jørgen Munthe; Brauer, H.

    1996-01-01

    The possibility of an industrial aerogel glazing production is discussed with respect to sample size, sales volume and prices. Different ways of an industrial assembling line is outlined and the total costs of a 1 square meter aerogel glazing is calculated.......The possibility of an industrial aerogel glazing production is discussed with respect to sample size, sales volume and prices. Different ways of an industrial assembling line is outlined and the total costs of a 1 square meter aerogel glazing is calculated....

  20. Security in Industrial Networks

    OpenAIRE

    Sørensen, Jan Tore

    2007-01-01

    A major trend in the automation and power industries is the transition from closed proprietary network solutions to open TCP/IP protocols running on Ethernet technologies. As these industries converge on an all IP platform, new challenges and requirements on the security level of the devices arise. The introduction of integrated operations in the oil and gas industry has provided many benefits for the industry, but it has also opened up the information flow between Distributed Control Systems...

  1. The pharmaceutical industry

    OpenAIRE

    1982-01-01

    The attitude of general practitioners to the drug industry is interesting: on the one hand the industry researches and produces new drugs which are essential to the practice of modern medicine; on the other hand, doctors are sceptical that the information received from the industry is too biased. It is time for students and doctors to be trained in a more critical approach to the industry and its representatives.

  2. PROSPEK INDUSTRI PARIWISATA INDONESIA

    OpenAIRE

    Siregar, Nurhayati

    2010-01-01

    Indonesia's tourism industry developed serious since the mid-1980s following a decline in revenue from oil and gas (oil). Since the 1997 economic crisis, Indonesia's tourism industry to survive. This study showed that Indonesia's tourism sector has great potential. There are five factors that will make the tourism industry has the potential to grow. First, the trend of world tourism industry will increase in the 21st century. Second, the contribution of tourism sector in economic development ...

  3. Der Preis als Kaufbarriere?

    DEFF Research Database (Denmark)

    Mueller Loose, Simone

    2012-01-01

    Die Preispolitik hat eine herausragende Stellung im Marketing. Der Preis eines Produktes ist für Verbraucher ein direkter Kostenfaktor und für Unternehmen die Stellgröße im Mar-ketingmix, die den Umsatz am stärksten beeinflusst (vgl. Nieschlag et al. 2002). Wenn die Akzeptanz und der regelmäßige...... Verzehr gesunder Lebensmittel erhöht werden soll, ist es sowohl für die Verbraucherpolitik als auch für Lebensmittelproduzenten wichtig, den Ein-fluss des Preises auf die Kaufentscheidung zu verstehen. Aus Verbrauchersicht ist der Preis neben dem Geschmack die wichtigste Produkteigen-schaft beim Kauf von...... Lebensmitteln (vgl. Brunsø/Grunert 1998) und stellt eine Kaufbarrie-re für Lebensmittel mit gesundheitsfördernden Eigenschaften dar. Studien in den USA (vgl. Cassady et al. 2007), Frankreich (vgl. Drewnowski et al. 2004; Andrieu et al. 2005) und Deutschland (vgl. Karg et al. 2008) kommen übereinstimmend zu dem...

  4. Kenya Leather Industry

    OpenAIRE

    World Bank Group

    2015-01-01

    In 2014, Kenya’s Ministry of Industrialization requested technical assistance from the World Bank to conduct competitiveness assessments and develop competitiveness strategies for four key industries: textiles and apparel, food processing, furniture, and leather and leather products. In the context of Kenya’s long-term vision to become an industrialized middle-income country by 2030, its l...

  5. Networks and Industry Structure

    OpenAIRE

    Johnson, F P

    1995-01-01

    This paper explores how the network approach to marketing might be informed by concepts drawn from traditional industry structure analysis. It argues that industry structures defined by small numbers of participants such as oligopolies are more likely to lead to network effects while industry structures that approach perfect competition are unlikely to involve network formation.

  6. 2011 Training Industry Report

    Science.gov (United States)

    Training, 2011

    2011-01-01

    This article presents "Training" magazine's exclusive analysis of the U.S. training industry, featuring 2011 training expenditures, budgetary allocations, delivery methods, and training priorities. Now in its 30th year, The Industry Report is recognized as the training industry's most trusted source of data on budgets, staffing, and programs. This…

  7. Industry recession to persist

    International Nuclear Information System (INIS)

    This paper reports that the depressed U.S. oil and gas industry is not likely to recover soon, witnesses told the Texas Railroad Commission's state of the petroleum industry hearing. Major companies and independent operators agreed the U.S. petroleum industry is near a state of collapse. Many the producers are despairing about the chances of surviving the latest economic downturn

  8. Robotics and Industrial Arts.

    Science.gov (United States)

    Edmison, Glenn A.; And Others

    Robots are becoming increasingly common in American industry. By l990, they will revolutionize the way industry functions, replacing hundreds of workers and doing hot, dirty jobs better and more quickly than the workers could have done them. Robotics should be taught in high school industrial arts programs as a major curriculum component. The…

  9. Contract Training for Industry.

    Science.gov (United States)

    Averill, Donald F.

    1983-01-01

    Describes contract training whereby industries arrange with community colleges, technical institutes, and vocational schools to prepare employees for specific job assignments. Indicates that industrial training performed under contract with public institutions should be encouraged in favor of expansion of training that industry performs for…

  10. INDUSTRI KREATIF INDONESIA: PENDEKATAN ANALISIS KINERJA INDUSTRI

    OpenAIRE

    Ahmad Kamil

    2015-01-01

    In 2008, the Department of Commerce of the Republic of Indonesia has launched a creative economic development documents interpreted the 2025 Indonesia became the starting point and guide the development of the creative economy in Indonesia. With the existence of this document, the industry and its stakeholders or other stakeholders can readily develop the creative economy in Indonesia. Economic development in the direction of the creative industries is one manifestation of optimism aspiration...

  11. Dry Sliding Wear Behavior of a Novel 6351 Al-Al4SiC4 Composite

    Science.gov (United States)

    Mondal, Manas Kumar; Biswas, Koushik; Saha, Atanu; Maity, Joydeep

    2015-02-01

    In this research work the dry sliding wear behavior of 6351 Al alloy and 6351 Al based composites possessing varying amount of (2-7 vol.%) in situ Al4SiC4 reinforcement was investigated at low sliding speed (1 m/s) against a hardened EN 31 disk at different loads. In general, the wear mechanism involved adhesion and microcutting abrasion. Under selected loads (9.8 and 24.5 N), the overall wear resistance increased with increasing content of Al4SiC4 particles since particles stood tall against the process of wear. Besides, strain hardening of the matrix played an additional role to provide wear resistance. Therefore, the newly developed 6351Al-Al4SiC4 composite can be used as light weight wear resistance component in industry.

  12. Industrial statistics with Minitab

    CERN Document Server

    Cintas, Pere Grima; Llabres, Xavier Tort-Martorell

    2012-01-01

    Industrial Statistics with MINITAB demonstrates the use of MINITAB as a tool for performing statistical analysis in an industrial context. This book covers introductory industrial statistics, exploring the most commonly used techniques alongside those that serve to give an overview of more complex issues. A plethora of examples in MINITAB are featured along with case studies for each of the statistical techniques presented. Industrial Statistics with MINITAB: Provides comprehensive coverage of user-friendly practical guidance to the essential statistical methods applied in industry.Explores

  13. The UK Casting Industry

    Institute of Scientific and Technical Information of China (English)

    Jincheng Liu

    2006-01-01

    The casting production in the UK in 2004 is presented and analysed. The UK casting industry has played an important role in world casting and manufacturing production. However recent years the rapid development of some developing countries has been shifting the casting production from the western industrialized countries including the UK. The UK casting industry and associated research and technology organizations, universities have been working together very hard to face the serious competition to make the UK casting industry have a sustainable future. The UK casting industry remains strong and plays an important role in world casting and manufacturing production.

  14. Construction and evaluation of multi-component Zn-Al based bearing alloys (Zn-Al-Si, Zn-Al-Cu)

    International Nuclear Information System (INIS)

    Zn-Al based alloys, with excellent mechanical properties, are finding increasing applications in various industries, especially bearing and bushing fields. Observed dimensional instabilities, in their multicomponent systems, (e. g. Zn-Al-Si and, Zn-Al Si-Cu), is believed to be as the result of some kinds of phase transformation, due to the temperature variations, while in service. Profound understanding of the phase transformations due to the temperature variation, requires detailed evaluations of the isothermal sections of the multi-components phase diagrams of Zn-Al-Si and, Zn-Al-Si-Cu alloy systems. In the present article, the isothermal sections of the aforementioned ternary and quaternary systems in the solid state regions have been investigated and observed phase transitions have been critically evaluated

  15. Modification of residual stress in Al-[AlBO]w/Al compound plate

    Institute of Scientific and Technical Information of China (English)

    姜传海; 吴建生; 王德尊

    2001-01-01

    The application of compound parts of Al-[AlBO]w/Al not only reduces the cost of the parts but also improves its properties. However, there is a large thermal residual stress between Al and [AlBO]w/Al, and it is harmful for practical application. From the theoretical analyses and experimental results, it was found that by the compressive pre-plastic deformation perpendicular to the interface between Al and [AlBO]w/Al, the interlayer residual stress of compound parts can be reduced, while the mechanical properties of compound parts can be improved.

  16. Uranium industry annual 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-04-22

    The Uranium Industry Annual 1998 (UIA 1998) provides current statistical data on the US uranium industry`s activities relating to uranium raw materials and uranium marketing. It contains data for the period 1989 through 2008 as collected on the Form EIA-858, ``Uranium Industry Annual Survey.`` Data provides a comprehensive statistical characterization of the industry`s activities for the survey year and also include some information about industry`s plans and commitments for the near-term future. Data on uranium raw materials activities for 1989 through 1998, including exploration activities and expenditures, EIA-estimated reserves, mine production of uranium, production of uranium concentrate, and industry employment, are presented in Chapter 1. Data on uranium marketing activities for 1994 through 2008, including purchases of uranium and enrichment services, enrichment feed deliveries, uranium fuel assemblies, filled and unfilled market requirements, and uranium inventories, are shown in Chapter 2. The methodology used in the 1998 survey, including data edit and analysis, is described in Appendix A. The methodologies for estimation of resources and reserves are described in Appendix B. A list of respondents to the ``Uranium Industry Annual Survey`` is provided in Appendix C. The Form EIA-858 ``Uranium Industry Annual Survey`` is shown in Appendix D. For the readers convenience, metric versions of selected tables from Chapters 1 and 2 are presented in Appendix E along with the standard conversion factors used. A glossary of technical terms is at the end of the report. 24 figs., 56 tabs.

  17. Metalcasting Industry Technology Roadmap

    Energy Technology Data Exchange (ETDEWEB)

    none,

    1998-01-01

    The Roadmap sets out the strategy for pursuing near-, mid-, and long-term goals set out by industry and for carrying out the cooperative agreement between the U.S. Department of Energy and industry. The Roadmap outlines key goals for products and markets, materials technology, manufacturing technology, environmental technology, human resources, and industry health programs. The Roadmap sets out the strategy for pursuing near-, mid-, and long-term goals set out by industry and for carrying out the cooperative agreement between the U.S. Department of Energy and industry. The Roadmap sets out the strategy for pursuing near-, mid-, and long-term goals set out by industry and for carrying out the cooperative agreement between the U.S. Department of Energy and industry.

  18. Clinical Practice Guidelines and Industry

    Directory of Open Access Journals (Sweden)

    Ajai R. Singh

    2007-01-01

    Full Text Available In this section we shall see what Clinical Practice Guidelines (CPGs should be and what they are, the recent case of Xigris and a thriller-like manipulation by the concerned company to enter a performance 'bundle', CPG effectiveness/cost effectiveness and other considerations, how they serve Industry needs, and what methods can possibly assist them actualise their enormous potential.Introduction From the early nineties, a number of Clinical Practice Guidelines (CPGs have been created and published by many different associations and organizations at considerable expense. CPGs are supposed to serve an important purpose. They offer objective consensus of expert opinion on treatment and hence are trusted by hospitals and practicing physicians alike. They can reduce the possibility of inappropriate care being delivered, while helping introduce new knowledge into clinical practice (Grimshaw and Russell, 1993; Merritt et al. , 1997; Woolf et al. , 1999. They are a distillate of biomedical wisdom at a certain point of time applied to better and more efficient patient care. Hence, rigorously developed guidelines can translate complicated research findings into actionable recommendations of clinical care (Shiffman et al. , 2003; Haines and Jones, 1994. Clinical practice guidelines have generally been accepted as an objective consensus on evidence (Baird, 2003. Practice guidelines approved by expert panels are intended to standardize care in such a way as to improve health outcomes (Eichacker et al. , 2006. Major hospitals and knowledge updated physicians feel reassured they are doing the very best by following CPGs. State of the art, and such other fancy labels, can be justifiably applied to them.McMaster et al., (2007 have talked recently of getting guidelines to work in practice. In an effort to make CPGs more effective, developers of such guidelines have started grouping evidence-based interventions into what are called 'bundles'. The justification for

  19. Altern als Widerstand

    Directory of Open Access Journals (Sweden)

    Roberta Maierhofer

    2005-07-01

    Full Text Available Gullettes kulturwissenschaftliche Untersuchung Aged by Culture ist wie bereits ihre zwei vorangehenden Werke, die sich mit Altern beschäftigen – Safe at Last in the Middle Years: The Invention of the Midlife Progress Novel (1988 und Declining to Decline. Cultural Combat and the Politics of the Middle (1997 –, von großem persönlichen Engagement und durch ein politisches Anliegen motiviert. Sowohl die Dringlichkeit als auch der Widerstand, den Gullette, die sich als „age critic“ definiert, als moralische und politische Notwendigkeit postuliert, werden in der Zweiteilung der Abhandlung angesprochen: „Cultural Urgencies“ und „Theorizing Age Resistantly“. Während Gullette den Begriff „aged by culture“ bereits in Declining to Decline einführt, stellt sie ihn nun in den Mittelpunkt ihrer Untersuchung. Das Buch ist einerseits einer gesellschaftspolitischen Analyse der USA gewidmet, andererseits wird eine Theorie des Widerstands gegenüber Altersdiskriminierung entwickelt.

  20. Pornographie als Metapher

    Directory of Open Access Journals (Sweden)

    Caroline Schubarth

    2010-03-01

    Full Text Available In diesem Artikel werden unterschiedliche metaphorische Verwendungen des Pornografiebegriffs und deren Implikationen untersucht. Während die Existenz von Pornografie der feministischen Anti-Porno-Bewegung als Erklärung für die anhaltende Diskriminierung von Frauen in westlichen Gesellschaften dient, nutzen rechtskonservative Kräfte den Pornografievorwurf als Rechtfertigung für die Zensur von als deviant empfundenen Identitäten und sexuellen Praktiken.This article examines different metaphorical uses of the term pornography and the resulting implications. While the existence of pornography for the feminist anti-porno movement serves as factor in the continuing discrimination of women in western societies, conservative powers on the right use the allegation of pornography as a justification for censorship of those identities and sexual practices deemed deviant.

  1. Influence of impact speed on water droplet erosion of TiAl compared with Ti6Al4V

    OpenAIRE

    Mahdipoor, M.S.; Kirols, H.S.; Kevorkov, D.; P. Jedrzejowski; M. Medraj

    2015-01-01

    Water Droplet Erosion (WDE) as a material degradation phenomenon has been a concern in power generation industries for decades. Steam turbine blades and the compressor blades of gas turbines that use water injection usually suffer from WDE. The present work focuses on studying erosion resistance of TiAl as a potential alloy for turbine blades compared to Ti6Al4V, a frequently used blade alloy. Their erosion behaviour is investigated at different droplet impact speeds to determine the relation...

  2. US Industry-Level Returns and Oil Prices

    OpenAIRE

    Fan, Qinbin; Jahan-Parvar, Mohammad R.

    2009-01-01

    This paper takes a closer look at the puzzle uncovered by Driesprong et al. (2008) and finds empirical support for the "oil effect" in equity returns. Using forty nine US industry-level returns series and changes in oil spot and future prices, we address whether industry-level returns are predictable. We find that using changes in oil spot prices, the answer is yes; but for just under a fifth of industries in our sample. We find weak support for the predictability of industry-level returns ba...

  3. Landscape of Industry: Transformation of (Eco Industrial Park through history

    Directory of Open Access Journals (Sweden)

    Archana Sharma

    2013-11-01

    Full Text Available The landscape of industry has been changing over time. Industry has transformed and many tangents have emerged from the sporadic home-based cottage industries to geographically scattered large manufacturing industries to co-located industrial parks to environment friendly eco-industrial parks. Curiosity about the catalysts that bring about the transformation of industrial landscape is the motivation of this article. Through the narrative on Industrial Park and the gradual shift towards Eco-Industrial Park, this article aims to shed light on the context and conditions that act as catalysts for industrial transformations, so as to serve as a reference for predicting future changes in industrial landscape.

  4. Wikipedia als Referenzorgan

    OpenAIRE

    Voß, Jakob

    2006-01-01

    Wikipedia wird inzwischen von vielen Nutzern regelmäßig als Nachschlagewerk genutzt. Aufgrund des offenen Charakters der Online-Enzyklopädie, bei der sich jeder direkt beteiligen kann, ist jedoch zusätzliche Medienkompetenz notwendig, um die Qualität einzelner Wikipedia-Artikel einschätzen zu können. Im Vortrag sollen Methoden zur Beurteilung von Wikipedia-Artikeln dargestellt und die Frage beleuchtet werden, unter welchen Umständen Wikipedia als Referenzorgan geeignet ist.

  5. Reactor neutron activation analysis of industrial materials

    International Nuclear Information System (INIS)

    The specific application of neutron activation analysis (n.a.a.) for industrial materials is demonstrated by the determination of impurities in BeO, Al, Si, Cu, Ge, GaP, GaAs, steel, and irradiated uranium. A group scheme gives an orientation about the possibilities of n.a.a. The use of different standards, methods for the measurement of low radioactivities and errors caused by recoil reaction and radiation stimulated diffusion are discussed. (author)

  6. Cost Management of Motor Manufacturing Industry

    Institute of Scientific and Technical Information of China (English)

    Liu Chunyan

    2013-01-01

    Through the study on the way to reduce the cost of motor manufacturing industry, this paper ful y infiltrates the definition of cost into al aspects of enterprise production and operation. That is to say, only comprehensive, ful-staf and ful-proces cost control can greatly enhance enterprise competitivenes initiative at the time of enhancing the competitiveness of enterprise products in the market.

  7. Edificación industrial

    Directory of Open Access Journals (Sweden)

    Hidalgo Fernández-Cano, Amalio

    1960-01-01

    Full Text Available La composición arquitectónica de esta importante rama de la edificación ha alcanzado en estos últimos años gran importancia, tras haber constituido una de las principales causas del nacimiento de la nueva arquitectura. La esclavitud que impone un proceso de fabricación al proyectista del edificio es tal, que no hay modo de salvar las imposiciones funcionales. Y ese funcionalismo a ultranza, junto a la ausencia de falsos elementos decorativos superfinos, han dado por resultado la realización de una serie de ejemplos de edificación industrial de indudable valor arquitectónico.

  8. Assessment of Si and Al diffusion for the production of high Si and high Si-Al electrical steel

    International Nuclear Information System (INIS)

    A trend in the production of electrical steel is to increase the concentration of Si and Al (over 3 wt%) in order to reduce magnetic losses through increased electrical resistivity. This can hardly be done in early stages of the production process due to the appearance of brittle phases; however, a concentration increase of (Si, Al) can be reached by surface deposition of Si and/or Al, followed by diffusion into the bulk. Diffusion of Si and/or Al modifies substantially the mechanical and magnetic properties of the substrate and a study of the diffusion process leading to Fe-Si-Al alloys with homogeneous or inhomogeneous distribution of (Si, Al) is needed. The industrial production of these alloys requires models predicting the concentration profile of (Si, Al) resulting from the diffusion process and the changes of the mechanical and magnetic properties associated with the resulting concentration profiles of (Si, Al). This paper assesses the diffusion process using commercial software for the modelling of diffusion-controlled transformations. Experimental validation was made on some base alloys and results for the 3 wt% Si material are reported. Substrates were coated by dipping in a molten Al-25 wt% Si alloy, followed by annealing at different temperatures and times. The results show that Si concentration profiles can be accurately predicted. However, when considering both Si and Al diffusion their interaction causes important disagreements between experimental results and model calculations

  9. Industry and energy; Industrie et energie

    Energy Technology Data Exchange (ETDEWEB)

    Birules y Bertran, A.M. [Ministere des Sciences et de la Technologie (Spain); Folgado Blanco, J. [Secretariat d' Etat a l' Economie, a l' Energie et aux PME du Royaume d' Espagne (Spain)

    2002-07-01

    This document is the provisional version of the summary of the debates of the 2433. session of the European Union Council about various topics relative to the industry and the energy. The energy-related topics that have been debated concern: the government helps in coal industry, the internal electricity and gas market, the trans-European energy networks, the bio-fuels in transportation systems, the energy charter, the pluri-annual energy program, and the green book on the security of energy supplies. (J.S.)

  10. SHANGHAI INTERNATIONAL INDUSTRIAL FAIR

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    @@ Third Shanghai International Industrial Fair was held in New International Fair Center in Pudong Area in late November. This industrial fair titled "Information and Industrialization" aimed at highlighting China's high technology and industrial achievements in the new century. The sponsors for this session of industrial fair include China State Economic and Trade Commission, Ministry of Foreign Economic and Trade Relations, Ministry of Information Industry, Ministry of Science and Technology, Ministry of Education, Chinese Academy of Sciences and Shanghai Government.CNPC and Sinopec participated in the exhibition displaying a number of the latest technologies such as PetroChina's model for state land resources and Sinopec's model for 300,000-ton ethylene project.

  11. Globally Oriented Chinese Plastics Industry

    Institute of Scientific and Technical Information of China (English)

    Liao Zhengpin

    2004-01-01

    @@ Through continued endeavor and persistent opening to the whole world the Chinese plastics industry has been developed into a comprehensive industrial system that forms the basic material industries side by side with the steel, cement and the timber industry.

  12. Industrial manufacturing of electric insulators; Fabricacion industrial de aisladores electricos

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez, Lucia [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1987-12-31

    Porcelain is the insulating material more extensively used for electric insulators manufacturing, due to its dielectric properties; nevertheless, it presents fragility problems of manufacture and of resistance to the thermal shock, among others. For this reason studies are being conducted for the substitution of porcelain in the electric insulators manufacturing. In this area, the Instituto de Investigaciones Electricas developed an improved insulating formulation - the polymeric concrete- and an industrial prototype machine for the manufacture of high voltage electric insulators for outdoors use. [Espanol] La porcelana es el material aislante electrico mas utilizado en la elaboracion de aisladores electricos, debido a sus propiedades dielectricas; sin embargo, presenta problemas de fragilidad, de fabricacion y de baja resistencia al choque termico, entre otros. Es por ello que se realizan estudios para sustituir la porcelana en la fabricacion de aisladores electricos. En este campo, el Instituto de Investigaciones Electricas desarrollo una formulacion aislante mejorada -el concreto polimerico- y una maquina prototipo industrial para fabricar aisladores electricos de alto voltaje para uso en exteriores.

  13. From academy to industry

    International Nuclear Information System (INIS)

    Full text of publication follows. Clinical efficacy of radioimmunotherapy (RIT) has been clearly documented in the consolidation situation, such as first line treatment of indolent Non Hodgkin Lymphoma after induction chemotherapy [1] or after salvage resection of liver metastases from colon carcinoma [2], when tumor targets have a small, preferably microscopic, size. In this favorable situation RIT, which is a targeted therapy with toxicity limited to hematological toxicity, has a great potential and could be competitive with chemotherapy in particular for solid tumors. Such potential has been recently demonstrated in prostate cancer [3]. A lot of academic preclinical studies have been performed using multiple antibodies and antibody formats labeled with varied beta-emitting and more recently alpha particle-emitting radionuclides. With regard to other targeted therapies, the efficacy of RIT has been fully recognized and academic preclinical studies have been extended to a lot of clinical phase I/II studies but a limited number of phase II studies. Paradoxically, despite quite encouraging results, the number of industrially implemented phase III studies has been limited to the fingers of one hand illustrating a gap between academy and industry. For the last ten years only 2 ARCs (Antibody Radio Conjugates) (Zevalin and Bexxar) have been approved. The reasons for such a gap are complex and multiple but they could be summarized in one word: Money. The cost for a phase III study, enrolling hundreds of patients, exceeds the financial capabilities of most radiopharmaceutical companies and, up to now, Big Pharmas did not dare to invest in this field of RIT in part because they are not familiar with the use of radionuclides and prefer to develop ADCs (Antibody Drug Conjugates) even if they are generally more toxic and no more efficient than ARCs. For the future of RIT it is crucial to succeed in convincing Big Pharmas to invest in this field of ARCs. For this purpose it

  14. BERKELEY: ALS ring

    International Nuclear Information System (INIS)

    Everybody at Lawrence Berkeley Laboratory's Center for Beam Physics is pleased with the rapid progress in commissioning LBL's Advanced Light Source (ALS) electron storage ring, the foundation for this third-generation synchrotron radiation facility. Designed for a maximum current of 400 mA, the ALS storage ring reached 407 mA just 24 days after storing the first beam on 16 March. ALS construction as a US Department of Energy (DOE) national user facility to provide high-brightness vacuum ultra-violet and soft x-ray radiation began in October 1987. One technical requirement marking project completion was to accumulate a 50-mA current in the storage ring. The ALS passed this milestone on 24 March, a week ahead of the official deadline. Once injected, the electron beam decays quasi-exponentially primarily because of interactions with residual gas molecules in the storage-ring vacuum chamber. Eventually, when the pressure in the vacuum chamber with beam decreases toward the expected operating level of 1 nano Torr, it will only be necessary to refill the storage ring at intervals of four to eight hours. At present the vacuum is improving rapidly as surfaces are irradiated (scrubbed) by the synchrotron radiation itself. At 100 mA, beam lifetime was about one hour (9 April)

  15. Al Shanker Remembers.

    Science.gov (United States)

    American Educator, 2000

    2000-01-01

    In a 1996 interview shortly before his death, Al Shanker, longtime president of the American Federation of Teachers, discussed such topics as: his own educational experiences; how he learned about political fighting in the Boy Scouts; the appeal of socialism; multinational corporations and the nation state; teaching tough students; and John Dewey…

  16. MINING INDUSTRY IN CROATIA

    OpenAIRE

    Slavko Vujec

    1996-01-01

    The trends of World and European mine industry is presented with introductory short review. The mining industry is very important in economy of Croatia, because of cover most of needed petroleum and natural gas quantity, total construction raw materials and industrial non-metallic raw minerals. Detail quantitative presentation of mineral raw material production is compared with pre-war situation. The value of annual production is represented for each raw mineral (the paper is published in Cro...

  17. MINING INDUSTRY IN CROATIA

    Directory of Open Access Journals (Sweden)

    Slavko Vujec

    1996-12-01

    Full Text Available The trends of World and European mine industry is presented with introductory short review. The mining industry is very important in economy of Croatia, because of cover most of needed petroleum and natural gas quantity, total construction raw materials and industrial non-metallic raw minerals. Detail quantitative presentation of mineral raw material production is compared with pre-war situation. The value of annual production is represented for each raw mineral (the paper is published in Croatian.

  18. Information and Industry Dynamics

    OpenAIRE

    Emin M. Dinlersoz; Mehmet Yorukoglu

    2012-01-01

    This paper develops a model of industry dynamics where firms compete to acquire customers over time by disseminating information about themselves in the presence of random shocks to their efficiency. The properties of the model's stationary equilibrium are related to empirical regularities on firm and industry dynamics. As an application of the model, the effects of a decline in the cost of information dissemination on firm and industry dynamics are explored. (JEL D11, D83, L11, L81, M37)

  19. Industrial Economics in Scandinavia

    OpenAIRE

    Foss, Nicolai J.; Møllgaard, Peter

    2005-01-01

    Based on diverse research methods, we trace and map industrial economics research in Denmark, Norway and Sweden in the periode of 1880 to 1908. After describing this research in terms of key contributors, we argue that industrial economics developed rather unevenly in the Scandinavian countries. Danish research was mainly theoretical and strongly oriented towards the international context, whereas Norwegian research was largely industry analysis with a strong leaning towards managerial econom...

  20. Industrial Economics in Scandinavia

    OpenAIRE

    Foss, Nicolai J.; Møllgaard, Peter

    2004-01-01

    Based on diverse research methods, we trace and map industrial economics research in Denmark, Norway and Sweden in the periode of 1880 to 1908. After describing this research in terms of key contributors, we argue that industrial economics developed rather unevenly in the Scandinavian countries. Danish research was mainly theoretical and strongly oriented towards the international context, whereas Norwegian research was largely industry analysis with a strong leaning towards managerial econom...

  1. Industrial policy for growth

    OpenAIRE

    Farla, Kristine

    2012-01-01

    This study distinguishes between industrial policy that stimulates incumbent industry development, `pro-business policy', and industrial policy that promotes the development of free markets, `pro-market policy'. We find that there is a positive relation between the level of countries' implementation of these policies. However, we find opposite effects of pro-business and pro-market policies when estimating the policy effect on growth and income level. Pro-business policy has a positive effect...

  2. The Modern Motor Industry

    OpenAIRE

    Garel Rhys

    2001-01-01

    The motor industry is experiencing one of its periods of massive change. This involves considerable micro- and macroeconomic effects, reflecting the structure and behaviour of the industry and its scale of operations within an economy. The industry is a highly rivalrous oligopoly, where although there is product differentiation, competition, both price and non-price, is considerable. This impacts upon the nature of vehicle demand, including environmental issues. Supply conditions in the indus...

  3. Nuclear industry technology boomerang

    International Nuclear Information System (INIS)

    The benefits to the medical, pharmaceutical, semiconductor, computer, video, bioscience, laser, defense, and numerous high-tech industries from nuclear technology development fallout are indeed numerous and increase every day. Now those industries have made further progress and improvements that, in return, benefit the nuclear industry. The clean-air and particle-free devices and enclosures needed for protection and decontamination are excellent examples

  4. Polish food industry 2008-2013

    OpenAIRE

    Mroczek, Robert; Drożdż, Jadwiga; Tereszczuk, Mirosława; Urban, Roman

    2014-01-01

    The aim of the study is to evaluate the functioning of the food industry and its various sectors in 2008-2013. Meat and poultry industry. Dairy industry. Fishing industry. Milling industry. Sugar industry. Oil-mill industry. Processing of fruit, vegetables and potatoes. Bakery industry. Confectionery industry. Feed industry. Production of other food products. Production of alcoholic beverages.Tobacco industry. Food industry.

  5. Process and petroleum industry

    International Nuclear Information System (INIS)

    In comparison with many industries, the oil and gas industry is somewhat unique in that it has been operating in a global environment for many decades. The North Sea exploration and production industry is now entering a challenging era for business growth which is a mature region with smaller and smaller fields, more difficult to find and which require innovative development schemes. This presentation relates to information technology offering the exploration and production industry a unique set of business tools to improve performance and enable growth while reducing risk

  6. Sustainable Industrial Production

    DEFF Research Database (Denmark)

    Brattebö, Helge; Jørgensen, Michael Søgaard; Lorentzen, Børge;

    The book discusses the concepts of waste minimization, cleaner technology and industrial ecology, including the experiences with employee participation in preventive environmental activities in companies....

  7. Wastewater Industrial Contributors

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — Industrial contributors to municipal wastewater treatment facilities in Iowa for the National Pollutant Discharge Elimination System (NPDES) program.

  8. Industrial Economics in Scandinavia

    DEFF Research Database (Denmark)

    Foss, Nicolai Juul; Møllgaard, Peter

    2004-01-01

    Based on diverse research methods, we trace and map industrial economics research in Denmark, Norway and Sweden in the periode of 1880 to 1908. After describing this research in terms of key contributors, we argue that industrial economics developed rather unevenly in the Scandinavian countries....... Danish research was mainly theoretical and strongly oriented towards the international context, whereas Norwegian research was largely industry analysis with a strong leaning towards managerial economics. Swedish research in industrial economics is very scant until the end of the 1960s.JEL Code: B1, B2...

  9. Uranium industry annual, 1986

    International Nuclear Information System (INIS)

    Uranium industry data collected in the EIA-858 survey provide a comprehensive statistical characterization of annual activities of the industry and include some information about industry plans over the next several years. This report consists of two major sections. The first addresses uranium raw materials activities and covers the following topics: exploration activities and expenditures, resources and reserves, mine production of uranium, production of uranium concentrate, and industry employment. The second major section is concerned with the following uranium marketing activities: uranium purchase commitments, uranium prices, procurement arrangements, uranium imports and exports, enrichment services, inventories, secondary market activities utility market requirements and related topics

  10. Is it necessary to adopt measures in occupational radiological protection in Spanish NORM industries devoted to the processing of minerals and raw materials; Es necesario adoptar medidas de proteccion radiologica ocupacionales en algunas industrias NORM espanolas dedicadas al procesdado de minerales o materias primas?

    Energy Technology Data Exchange (ETDEWEB)

    Garcia-Tenorio, R.; Bolivar, J. P.

    2010-07-01

    In this work it is documented why is quite limited the number os Spanish NORM industries devoted to the processing of minerals and/or raw materials where it is necessary to adopt occupational radiological protection countermeasures. These countermeasures are coincident in some cases with OHS countermeasures historically applied in the affected industries and in most cases can be only needed in working situations associated with maintenance operations. (Author) 6 refs.

  11. Ruidos da Fé: Estratégias para Redução dos Aspectos Ambientais Responsáveis pela Poluição Sonora de uma Igreja Evangélica em Natal/RN

    Directory of Open Access Journals (Sweden)

    Fábio Ribeiro Lima

    2010-01-01

    Full Text Available A poluição sonora é um dos tipos de poluição do ar mais presente nos aglomerados urbanos. O ruído, de uma forma geral, causa diversos efeitos nocivos aos indivíduos e sua manifestação ocorre tanto nas esferas física, psicológica e social interferindo diretamente na comunicação estabelecida entre eles. Um dos veículos de propagação desse tipo de poluição são os templos evangélicos que em sua maioria não possuem nenhum tipo de preparação acústica para a realização das suas atividades. Com o objetivo maior de criar estratégias para redução dos aspectos ambientais responsáveis pela poluição sonora provocada por esses templos, foram realizadas medições acústicas internas e externas na Igreja Nova Aliança do Brasil, uma igreja localizada em um bairro predominantemente residencial da Cidade do Natal/RN e que apresenta uma série de deficiências relacionadas à problemática em estudo. Dessa forma, para alcançar o objetivo exposto anteriormente foi necessário identificar o comportamento acústico no interior do templo; mensurar a intensidade de ruídos que a igreja gerava no momento de seus cultos; identificar as implicações que os ruídos gerados no templo podem causar no entorno da edificação e, por fim, fornecer subsídios para o tratamento dos aspectos ambientais causadores da poluição sonora urbana. Para a obtenção das informações acima referidas foi necessária a utilização de dois softwares de simulação acústica, a saber, o Reverb e o Aurora, os quais alimentados pelas informações coletadas in loco, como por exemplo, dimensões da edificação, materiais de acabamento das superfícies, tempo de reverberação do som e outros, forneceram dados que comprovaram a necessidade urgente de um tratamento acústico do templo em análise. Além disso, as medições internas e externas realizadas com decibelímetro na edificação no momento de realização do culto complementaram as informa

  12. Export oriented industrialization strategies

    OpenAIRE

    Karunaratne, Neil Dias

    1980-01-01

    Disappointment about the results of import substituting industrialization strategies as well as the spectacular performance of a few newly industrialised countries have led many developing countries to switch in the 1970s to export oriented industrialization. This analysis cautions against any misplaced euphoria with regard to this strategy in a neo-mercantilistic and hegemonic world.

  13. Insurance industry guide

    International Nuclear Information System (INIS)

    This is an insurance industry guide for the independent power industry. The directory includes the insurance company's name, address, telephone and FAX numbers and a description of the company's area of expertise, products and services, and limitations. The directory is international in scope. Some of the companies specialize in independent power projects

  14. Greening of Danish Industry

    DEFF Research Database (Denmark)

    Remmen, Arne

    2002-01-01

    The article outlines the major changes in the discourse on cleaner technology and on pollution prevention, together with policy instuments applied in the Danish industry.......The article outlines the major changes in the discourse on cleaner technology and on pollution prevention, together with policy instuments applied in the Danish industry....

  15. Conditions for industrial production

    DEFF Research Database (Denmark)

    Jensen, Karsten Ingerslev; Schultz, Jørgen Munthe; Brauer, H.

    1996-01-01

    The possibilities of making xerogel glazings in an industrial way is discussed and a schematic outline of a production line is presented.......The possibilities of making xerogel glazings in an industrial way is discussed and a schematic outline of a production line is presented....

  16. Sustainable Industrial Production

    DEFF Research Database (Denmark)

    Christensen, Irene

    2015-01-01

    The purpose of this case is to create awareness about a somewhat unfamiliar industry that accounts for over €3 billion in Scandinavia and £5,6 billion in the UK, the Metals recycling industry. The case features a Scandinavian Company and includes several perspectives from managerial disciplines s...

  17. Commercial Banking Industry Survey.

    Science.gov (United States)

    Bright Horizons Children's Centers, Cambridge, MA.

    Work and family programs are becoming increasingly important in the commercial banking industry. The objective of this survey was to collect information and prepare a commercial banking industry profile on work and family programs. Fifty-nine top American commercial banks from the Fortune 500 list were invited to participate. Twenty-two…

  18. RESTRUCTURING OF INDUSTRIAL ENTERPRISE

    Directory of Open Access Journals (Sweden)

    L. I. Podderegina

    2009-01-01

    Full Text Available The paper presents main principles for execution of current and strategic restructuring of national enterprises while using experience of countries with developed market economy. The principles contribute to higher efficiency in internal industrial relations at national industrial enterprises.

  19. Geothermal industry assessment

    Energy Technology Data Exchange (ETDEWEB)

    1980-07-01

    An assessment of the geothermal industry is presented, focusing on industry structure, corporate activities and strategies, and detailed analysis of the technological, economic, financial, and institutional issues important to government policy formulation. The study is based principally on confidential interviews with executives of 75 companies active in the field. (MHR)

  20. 2010 Training Industry Report

    Science.gov (United States)

    Training, 2010

    2010-01-01

    Now in its 29th year, The Industry Report is recognized as the training industry's most trusted source of data on budgets, staffing, and programs. This year, the study was conducted by an outside research firm in June-August 2010, when members from the "Training" magazine database were e-mailed an invitation to participate in an online survey.…

  1. Shipping Industry Structure

    NARCIS (Netherlands)

    Wijnolst, N.; Waals, F.

    1999-01-01

    Understanding Shipping Management requires a thorough understanding of the Shipping Industry Structure. This book provides this knowledge base and should be seen in conjunction with two other books: Shipping and Design Innovation in Shipping. Shipping Industry Structure was intended as the first par

  2. Conditions for industrial production

    DEFF Research Database (Denmark)

    Jensen, Karsten Ingerslev; Schultz, Jørgen Munthe; Brauer, H.

    1996-01-01

    The possibility of an industrial aerogel glazing production is discussed with respect to sample size, sales volume and prices. Different ways of an industrial assembling line is outlined and the total costs of a 1 square meter aerogel glazing is calculated....

  3. Cultural Industries Bloom

    Institute of Scientific and Technical Information of China (English)

    ZAN JIFANG

    2010-01-01

    @@ The market scale of China's cultural industries reached around 800 billion yuan($118 billion)in 2009,said a report on China's cultural industry development jointly released by a cultural research center under the Chinese Academy of Social Sciences and the academy's Social Sciences Academic Press on May 6.

  4. Research of Music Industry

    Institute of Scientific and Technical Information of China (English)

    李尔洁

    2007-01-01

    Nowadays companies tend to globalization. Hence, it is essential for the strategic planners to know some techniques for analyzing competitors within an industry. In this paper, light will be put on music industry through the analysis of international business models (PEST),moreover, five forces of Michael Porter's competitive strategy will be drawn on to further the analysis of global environment

  5. Aluminum Industry Technology Roadmap

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2003-02-01

    This roadmap describes the industry's R&D strategy, priorities, milestones, and performance targets for achieving its long-term goals. It accounts for changes in the industry and the global marketplace since the first roadmap was published in 1997. An updated roadmap was published November 2001. (PDF 1.1 MB).

  6. Manual on industrial radiography

    International Nuclear Information System (INIS)

    This manual is intended as a source of educational material to personnel seeking certification as industrial radiographers, and as a guide and reference text for educational organizations that are providng courses in industrial radiography. It covers the basic principles of x-ray and gamma radiation, radiation safety, films and film processing, welding, casting and forging, aircraft structures and components, radiographic techniques, and records

  7. Analysis of Industrial Wastewaters.

    Science.gov (United States)

    Mancy, K. H.; Weber, W. J., Jr.

    A comprehensive, documented discussion of certain operating principles useful as guidelines for the analysis of industrial wastewaters is presented. Intended primarily for the chemist, engineer, or other professional person concerned with all aspects of industrial wastewater analysis, it is not to be considered as a substitute for standard manuals…

  8. Nuclear industry takes off

    International Nuclear Information System (INIS)

    For more than a decade irradiation sterilisation of medical and pharmaceutical products proved a highly successful semi-commercial operation at Pelindaba, until it made way recently for the first full-scale radiation processing industry in SA - a classic case of science transferring technology to industry

  9. Uranium industry annual 1998

    International Nuclear Information System (INIS)

    The Uranium Industry Annual 1998 (UIA 1998) provides current statistical data on the US uranium industry's activities relating to uranium raw materials and uranium marketing. It contains data for the period 1989 through 2008 as collected on the Form EIA-858, ''Uranium Industry Annual Survey.'' Data provides a comprehensive statistical characterization of the industry's activities for the survey year and also include some information about industry's plans and commitments for the near-term future. Data on uranium raw materials activities for 1989 through 1998, including exploration activities and expenditures, EIA-estimated reserves, mine production of uranium, production of uranium concentrate, and industry employment, are presented in Chapter 1. Data on uranium marketing activities for 1994 through 2008, including purchases of uranium and enrichment services, enrichment feed deliveries, uranium fuel assemblies, filled and unfilled market requirements, and uranium inventories, are shown in Chapter 2. The methodology used in the 1998 survey, including data edit and analysis, is described in Appendix A. The methodologies for estimation of resources and reserves are described in Appendix B. A list of respondents to the ''Uranium Industry Annual Survey'' is provided in Appendix C. The Form EIA-858 ''Uranium Industry Annual Survey'' is shown in Appendix D. For the readers convenience, metric versions of selected tables from Chapters 1 and 2 are presented in Appendix E along with the standard conversion factors used. A glossary of technical terms is at the end of the report. 24 figs., 56 tabs

  10. Uranium industry annual 1994

    International Nuclear Information System (INIS)

    The Uranium Industry Annual 1994 (UIA 1994) provides current statistical data on the US uranium industry's activities relating to uranium raw materials and uranium marketing during that survey year. The UIA 1994 is prepared for use by the Congress, Federal and State agencies, the uranium and nuclear electric utility industries, and the public. It contains data for the 10-year period 1985 through 1994 as collected on the Form EIA-858, ''Uranium Industry Annual Survey.'' Data collected on the ''Uranium Industry Annual Survey'' (UIAS) provide a comprehensive statistical characterization of the industry's activities for the survey year and also include some information about industry's plans and commitments for the near-term future. Where aggregate data are presented in the UIA 1994, care has been taken to protect the confidentiality of company-specific information while still conveying accurate and complete statistical data. A feature article, ''Comparison of Uranium Mill Tailings Reclamation in the United States and Canada,'' is included in the UIA 1994. Data on uranium raw materials activities including exploration activities and expenditures, EIA-estimated resources and reserves, mine production of uranium, production of uranium concentrate, and industry employment are presented in Chapter 1. Data on uranium marketing activities, including purchases of uranium and enrichment services, and uranium inventories, enrichment feed deliveries (actual and projected), and unfilled market requirements are shown in Chapter 2

  11. ATLAS rewards industry

    CERN Multimedia

    Maximilien Brice

    2006-01-01

    For contributing vital pieces to the ATLAS puzzle, three industries were recognized on Friday 5 May during a supplier awards ceremony. After a welcome and overview of the ATLAS experiment by spokesperson Peter Jenni, CERN Secretary-General Maximilian Metzger stressed the importance of industry to CERN's scientific goals. Picture 30 : representatives of the three award-wining companies after the ceremony

  12. ALS insertion devices

    International Nuclear Information System (INIS)

    The Advanced Light Source (ALS), the first US third generation synchrotron radiation source, is currently under construction at the Lawrence Berkeley Laboratory. The low-emittance, 1.5 GeV electron storage ring and the insertion devices are specifically designed to produce high brightness beams in the UV to soft X-Ray range. The planned initial complement of insertion devices includes four 4.6 m long undulators, with period lengths of 3.9 cm, 5.0 cm (2) and 8.0 cm, and a 2.9 m long wiggler of 16 cm period length. Undulator design is well advanced and fabrication has begun on the 5.0 cm and 8.0 cm period length undulators. This paper discusses ALS insertion device requirements; general design philosophy; and design of the magnetic structure, support structure/drive systems, control system and vacuum system. 18 refs., 9 figs., 5 tabs

  13. De GPS al mapa

    Directory of Open Access Journals (Sweden)

    Esteban Dörries

    2016-03-01

    Full Text Available Las coordenadas Lambert obtenidas a partir de mediciones con equipos GPS de mano, llamados a veces navegadores, en ciertos casos confunden al usuario, por diferir claramente de su posición real al ser graficadas en un mapa del Instituto Geográfico Nacional (IGN: Esto puede resolverse con suficiente exactitud mediante una transformación de Molodensky, seguida de la correspondiente proyección cartográfica. Sin embargo, los tres parámetros necesarios para la transformación, supuestamente válidos para Costa Rica, se encuentran en muchas variantes y producen obviamente resultados diferentes. En este trabajo se analizan los fundamentos del problema y sus posibles soluciones, culminando con un estudio comparativo de ocho casos, que permite seleccionar los valores más adecuados para los parámetros.

  14. Historicism and Industry Emergence

    DEFF Research Database (Denmark)

    Kirsch, David; Moeen, Mahka; Wadhwani, Dan

    2014-01-01

    chapter, an alternative approach is explored that focuses on reconstructing causes and processes that time and theory have erased. The emergence of three industries—plant biotechnology, savings banking, and the automobile—shows how time, along with prevailing functional models of industry evolution, leads......Management and organization scholars have increasingly turned to historical sources to examine the emergence and evolution of industries over time. This scholarship has typically used historical evidence as observations for testing theoretically relevant processes of industry emergence. In this...... in identifying excluded phenomena and explanations, reconstructing uncertainty and alternative paths of industry emergence, and studying the processes of information elision and exclusion in the formation of industry knowledge....

  15. Uranium industry annual 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-04-01

    The Uranium Industry Annual 1996 (UIA 1996) provides current statistical data on the US uranium industry`s activities relating to uranium raw materials and uranium marketing. The UIA 1996 is prepared for use by the Congress, Federal and State agencies, the uranium and nuclear electric utility industries, and the public. Data on uranium raw materials activities for 1987 through 1996 including exploration activities and expenditures, EIA-estimated reserves, mine production of uranium, production of uranium concentrate, and industry employment are presented in Chapter 1. Data on uranium marketing activities for 1994 through 2006, including purchases of uranium and enrichment services, enrichment feed deliveries, uranium fuel assemblies, filled and unfilled market requirements, uranium imports and exports, and uranium inventories are shown in Chapter 2. A feature article, The Role of Thorium in Nuclear Energy, is included. 24 figs., 56 tabs.

  16. Acarbose als Carbophor

    OpenAIRE

    Merettig, Nadine

    2014-01-01

    Das Pseudotetrasaccharid Acarbose ist seit 1990 als kompetitiver Inhibitor intestinaler α-Glucosidasen (GlucobayTM/PrecoseTM) in der medizinischen Anwendung bei der Therapie von Diabetes mellitus Typ-2. Charakteristisch für die Struktur der Acarbose ist die Acarviosyleinheit, bei der Valinamin und Desoxyglucose N-glycosidisch verknüpft sind; des Weiteren ist an die Acarviosyleinheit ein Maltosylrest gebunden. Der Inhibitoreffekt beruht auf der irreversiblen Bindung zwischen ...

  17. Augmented Reality als Bildungsenhancement?

    OpenAIRE

    Damberger, Thomas

    2015-01-01

    Die Realität, die sich mithilfe von Datenbrillen und Smartphone Applikationen in die virtuelle Welt hinein ausdehnt, erfährt eine Form des Enhancements. Ein solches Enhancement kann unter bestimmten Voraussetzungen als Bildungsenhancement verstanden werden. Der Text befasst sich mit Formen der erweiterten Realität, ferner mit dem, um was es wesentlich bei der Bildung geht und zuletzt mit den Bedingungen, die erforderlich sind, um diesem Wesentlichen mit Hilfe von augmented reality besser zum ...

  18. Carta al editor

    OpenAIRE

    Harry Pachajoa

    2012-01-01

    Recently, Valencia et al., published a very interesting article called «Lipid profile in a group of patients with Turner’s syndrome at Clínica Universitaria Bolivariana in the city of Medellín between 2000 and 2009". An article which evaluated lipid levels in patients withTurner syndrome in a Colombian clinic, the study associated results of lipid profile with karyotype and other risk factors for coronary heart disease.

  19. Evolution of Fe Bearing Intermetallics During DC Casting and Homogenization of an Al-Mg-Si Al Alloy

    Science.gov (United States)

    Kumar, S.; Grant, P. S.; O'Reilly, K. A. Q.

    2016-04-01

    The evolution of iron (Fe) bearing intermetallics (Fe-IMCs) during direct chill casting and homogenization of a grain-refined 6063 aluminum-magnesium-silicon (Al-Mg-Si) alloy has been studied. The as-cast and homogenized microstructure contained Fe-IMCs at the grain boundaries and within Al grains. The primary α-Al grain size, α-Al dendritic arm spacing, IMC particle size, and IMC three-dimensional (3D) inter-connectivity increased from the edge to the center of the as-cast billet; both α c-AlFeSi and β-AlFeSi Fe-IMCs were identified, and overall α c-AlFeSi was predominant. For the first time in industrial billets, the different Fe-rich IMCs have been characterized into types based on their 3D chemistry and morphology. Additionally, the role of β-AlFeSi in nucleating Mg2Si particles has been identified. After homogenization, α c-AlFeSi predominated across the entire billet cross section, with marked changes in the 3D morphology and strong reductions in inter-connectivity, both supporting a recovery in alloy ductility.

  20. Evolution of Fe Bearing Intermetallics During DC Casting and Homogenization of an Al-Mg-Si Al Alloy

    Science.gov (United States)

    Kumar, S.; Grant, P. S.; O'Reilly, K. A. Q.

    2016-06-01

    The evolution of iron (Fe) bearing intermetallics (Fe-IMCs) during direct chill casting and homogenization of a grain-refined 6063 aluminum-magnesium-silicon (Al-Mg-Si) alloy has been studied. The as-cast and homogenized microstructure contained Fe-IMCs at the grain boundaries and within Al grains. The primary α-Al grain size, α-Al dendritic arm spacing, IMC particle size, and IMC three-dimensional (3D) inter-connectivity increased from the edge to the center of the as-cast billet; both α c-AlFeSi and β-AlFeSi Fe-IMCs were identified, and overall α c-AlFeSi was predominant. For the first time in industrial billets, the different Fe-rich IMCs have been characterized into types based on their 3D chemistry and morphology. Additionally, the role of β-AlFeSi in nucleating Mg2Si particles has been identified. After homogenization, α c-AlFeSi predominated across the entire billet cross section, with marked changes in the 3D morphology and strong reductions in inter-connectivity, both supporting a recovery in alloy ductility.

  1. Accelerated artificial ageing regimes of commercial aluminium alloys. II. Al-Cu, Al-Zn-Mg-(Cu), Al-Mg-Si-(Cu)

    Energy Technology Data Exchange (ETDEWEB)

    Ber, L.B. [All-Union Inst. of Light Alloys, Moscow (Russian Federation)

    2000-03-15

    For pt.I see ibid., vol.280, p.83-90, 2000. For Al-Cu, Al-Zn-Mg-(Cu), Al-Mg-Si-(Cu) commercial aluminium alloys effects of temperature and exposure on the phase composition and morphology of hardener precipitates, strength and plasticity were carried out. These results are submitted as TTT (time-temperature-transformation) and TTP (time-temperature-properties) diagrams for ageing. For acceleration of ageing the two-stage ageing regimes with high-temperature stages are used, the characteristics hardener precipitates remaining close to optimum. The examples of the accelerated ageing regimes in industrial conditions for sheets from 1201 alloy (type of 2219), sheets from V95 alloy (type of 7075), forgings from AK6 alloy (system Al-Mg-Si-Cu) are presented. The comparison of the mechanical properties, damage tolerance, corrosion resistance of the semi-products processed by standard and accelerated regimes is given. (orig.)

  2. Industrial analysis of the farmed salmon industry

    OpenAIRE

    Arnar Sigurjónsson 1982

    2012-01-01

    In recent years there has been a great consolidation of international food processors in the salmon farming industry in form of mergers and acquisitions (M&A). This development has not only been taking place between neighboring countries, but corporations have been investing in other continents. Marine Harvest Group (MHG) is the largest processor of farmed salmon in the world and has been the center of this development. The practical elements of the research are to support Marel, a major ...

  3. Deep SiO2 etching with Al and AlN masks for MEMS devices

    Science.gov (United States)

    Bliznetsov, Vladimir; Mao Lin, Hua; Zhang, Yue Jia; Johnson, David

    2015-08-01

    Silicon oxide-based materials such as quartz and silica are widely used in microelectromechanical systems (MEMS). One way to enhance the capability of their deep plasma etching is to increase selectivity by the use of hard masks. Although this approach was studied previously, information on the use of hard masks for the etching of silicon-oxide based materials on 200 mm substrates is scarce. We present the results of etching process development for amorphous silicon oxide using Al and AlN masks with a view of the application of the results for the etching of silica and quartz. Three gas chemistries (C4F8/O2, CF4 and SF6) and their mixtures were compared in an industrial reactive ion etch (RIE) chamber with two plasma sources. It was established that pure SF6 is the best etchant and AlN is a better mask than Al for providing higher selectivity and a sidewall angle close to vertical. A range of etching parameters for micromasking-free etching was established and etched structures of up to a 4 : 1 aspect ratio were created in 21 μm-thick oxide using the process with an etch rate of 0.32-0.36 μm min-1 and a selectivity to AlN mask of (38-49) : 1.

  4. Gender perspective on regional development and innovation in the food industry in Skåne

    OpenAIRE

    Scholten, Christina; Stridh, Kicki; Swärdh, Mia; Hansson, Agneta

    2010-01-01

    Gender perspective on regional development and innovation in the food industry in Skåne Working with applied research on gender, innovation and the food process industry in Skåne, we can conclude that gender is a necessary category in develop both industry and enhance regional development (Pettersson 2002, Scholten 2003, Sundin et al 2008). This conclusion has become evident (Lindberg et al 2008, Nyberg 2009, Pettersson 2007) as working consultants and researchers together (Norbäck et al 2006...

  5. Beef feedlot industry.

    Science.gov (United States)

    Mintert, James

    2003-07-01

    The United States cattle feeding sector has changed dramatically over time. Movement from an industry largely populated by farmer feeders using livestock to market their grain production to an industry composed of large, specialized, commercial cattle feeding firms has occurred since the end of World War II. Moreover, the industry also shifted geographically, moving away from the Corn Belt to the Plains as farmer feeders exited the industry. Today, the 10 largest firms in the industry likely market 22% to as much as 29% of all fed cattle produced in the United States. The shift in industry structure was at least partially motivated by the advent of improved technology. Successful implementation of rapidly evolving technology often required more intense, specialized management (and in some cases, larger operations) than was available in many farmer feeder operations. The ongoing shift away from live-weight pricing of fed cattle toward grid-based pricing could increase the need for specialized management yet again, encouraging even more industry consolidation in the future. PMID:12951739

  6. Analyzing China Smart Water Meter Industry Cluster Competitiveness

    OpenAIRE

    Chan, Parker

    2013-01-01

    Sustainable development has always been a top issue nowadays. The smart water management is one of the methods to achieve the sustainable development. This paper aims to focus on analyzing the competitiveness of industrial clusters (Guangzhou, Ningbo and Shanghai) in China specifically to the smart water meter industry. It is part of the CEMIS sourcing work package under the KVTELIOS project with Mr. Al Natsheh Anas, and is supervised by Ms. Komulainen Ruey. Porter Diamond Theory is used ...

  7. Del ruido de la euforia al silencio del simulacro: Instrumentalización del carnaval en el norte de Chile (1929-1939) From the Sound of Euphoria to the Silence of the Simulacrum: Instrumentalization of the Carnival in the North of Chile (1929-1939)

    OpenAIRE

    Jorge Said Barahona; Alberto Díaz Araya

    2011-01-01

    El siguiente artículo posee como objetivo principal analizar las diversas implicancias inferidas en la práctica ritual del carnaval durante un período de crisis económica, social y política (1929-1940). Considerando la contraposición entre la irracionalidad de la cultura popular y la racionalidad productiva de la cultura del libre mercado, en esa década se materializa en la práctica popular el rito carnavalesco, como manifestación de humor sarcástico y burlón, un clímax de euforia que provoca...

  8. Plasma diagnostics in industry

    International Nuclear Information System (INIS)

    Plasma processing forms an invaluable part of semiconductor device manufacturing. For the most part, commercial tools have relied on an empirical process for their evolution and relied exclusively on plasma characterization only at the development stage. As this industry advances there is the need to provide non-invasive plasma characterization and diagnostics on the processing equipment, in order to provide more control over the plasma properties. We outline some of the typical configurations used in the industry and describe two of the measurement techniques we have developed for the characterization of these industrial plasma sources. (author)

  9. Petroleum industry 1996

    International Nuclear Information System (INIS)

    A survey on petroleum industry activities in France and in the world in 1996 is presented. The different parts and themes of the study are: evolution of the petroleum market (international and French markets, supply and demand, prices, mark-up and taxation in France and in Europe); activities in the petroleum industries (exploration and production, maritime transportation, inland transportation and storage, refining, quality of petroleum products and substitution fuels, oil distribution); environment and safety (refining, distribution and evolution of products, pipeline and maritime transportation, exploration and production); situation of the sector's companies (oil groups, para-petroleum French industry, scientific and technical research)

  10. Plasma diagnostics in industry

    Energy Technology Data Exchange (ETDEWEB)

    Hopkins, M.B.; Lawler, J.F. [Scientific Systems Ltd, Howth Junction Business Park, Kilbarrack, Dublin 5 (Ireland)

    2000-12-01

    Plasma processing forms an invaluable part of semiconductor device manufacturing. For the most part, commercial tools have relied on an empirical process for their evolution and relied exclusively on plasma characterization only at the development stage. As this industry advances there is the need to provide non-invasive plasma characterization and diagnostics on the processing equipment, in order to provide more control over the plasma properties. We outline some of the typical configurations used in the industry and describe two of the measurement techniques we have developed for the characterization of these industrial plasma sources. (author)

  11. Formal Methods in Industry

    Directory of Open Access Journals (Sweden)

    Alexei Serna A.

    2012-12-01

    Full Text Available The application of formal methods in industry has progressed extensively over the past decade and the results are promising. But despite these achievements and it have been documented in numerous studies, it is still very common the skepticism about its usefulness and applicability. The goal of this paper is to show that its evolution over the past decade exceeds all previous processes and each time they do a better job to satisfy industrial needs. This is achieved by the description of some experiments and the result of various applications in industry and through an analyzing of the needs of companies that must be satisfy the research community in this field.

  12. Uranium industry annual, 1991

    International Nuclear Information System (INIS)

    In the Uranium Industry Annual 1991, data on uranium raw materials activities including exploration activities and expenditures, resources and reserves, mine production of uranium, production of uranium concentrate, and industry employment are presented in Chapter 1. Data on uranium marketing activities including domestic uranium purchases, commitments by utilities, procurement arrangements, uranium imports under purchase contracts and exports, deliveries to enrichment suppliers, inventories, secondary market activities, utility market requirements, and uranium for sale by domestic suppliers are presented in Chapter 2. A feature article entitled ''The Uranium Industry of the Commonwealth of Independent States'' is included in this report

  13. Industries and environment - 2014 edition

    International Nuclear Information System (INIS)

    After a general overview of the French economic context (composition of the French industry, the manufacturing industry, industry production and trade balance), this report presents industrial installations with risks: installations classified for the protection of the environment and submitted to industrial authorizations (ICPEA), basic nuclear installations, Seveso industrial facilities, IPPC industrial installations. The next part analyzes the various pressures exerted by the industry on the environment: material production and consumption, water taking, consumption of energetic products, release of pollutants in waters of industrial ICPE, releases in the air, greenhouse gas emissions, production of wastes, accidents and incidents with environmental consequences, polluted sites and soils, hazardous chemical products in the industry, industrial companies involved in nano-technologies and nano-materials. The last part proposes an overview of responses to these issues: implementation of environmental management system, corporate societal responsibility, investments and expenditures for the protection of the environment, industrial eco-activities, eco-labelled products manufactured by the industry

  14. AL-USRCRN Station Information

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Documentation of United States Alabama Regional Climate Reference Network (AL-USRCRN) installations in 2006. Installations documented are for AL-USRCRN pilot...

  15. Industry Based Monkfish Survey

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Monkfish industry leaders expressed concerns that the NEFSC bottom trawl surveys did not sample in all monkfish habitats; particularly the deeper water outside the...

  16. Industrial power distribution

    CERN Document Server

    Fehr, Ralph

    2016-01-01

    In this fully updated version of Industrial Power Distribution, the author addresses key areas of electric power distribution from an end-user perspective for both electrical engineers, as well as students who are training for a career in the electrical power engineering field. Industrial Power Distribution, Second Edition, begins by describing how industrial facilities are supplied from utility sources, which is supported with background information on the components of AC power, voltage drop calculations, and the sizing of conductors and transformers. Important concepts and discussions are featured throughout the book including those for sequence networks, ladder logic, motor application, fault calculations, and transformer connections. The book concludes with an introduction to power quality, how it affects industrial power systems, and an expansion of the concept of power factor, including a distortion term made necessary by the existence of harmonic.

  17. Restructuring the Electricity Industry

    DEFF Research Database (Denmark)

    Boom, Anette; Buehler, Stefan

    We study the role of vertical structure in determining generating capacities and retail prices in the electricity industry. Allowing for uncertain demand, we compare three market configurations: (i) integrated monopoly, (ii) integrated duopoly with wholesale trade, and (iii) separated duopoly...

  18. Industrial Assessment Center

    Energy Technology Data Exchange (ETDEWEB)

    J. Kelly Kissock; Becky Blust

    2007-04-17

    The University of Dayton (UD) performed energy assessments, trained students and supported USDOE objectives. In particular, the UD Industrial Assessment Center (IAC) performed 96 industrial energy assessment days for mid-sized manufacturers. The average identified and implemented savings on each assessment were $261,080 per year and $54,790 per year. The assessments served as direct training in industrial energy efficiency for 16 UD IAC students. The assessments also served as a mechanism for the UD IAC to understand manufacturing energy use and improve upon the science of manufacturing energy efficiency. Specific research results were published in 16 conference proceedings and journals, disseminated in 22 additional invited lectures, and shared with the industrial energy community through the UD IAC website.

  19. Industry and dangerous wastes

    International Nuclear Information System (INIS)

    The serious danger present tailing dumps of functioning and closed mineral resource industry in consequence of their weak security from natural disasters, proximity to water-ways, towns and state boundaries and also considering of past accidents

  20. The pharmaceutical industry

    Energy Technology Data Exchange (ETDEWEB)

    1993-06-01

    This Energy Consumption Guide shows the results of a survey of the UK Pharmaceutical Industry undertaken in 1992 in conjunction with the Association of the British Pharmaceutical Industry (ABPI). The survey was questionnaire based and the companies who replied represent approximately 20% of the energy consumption of the pharmaceutical industry as a whole. The questionnaire also included questions about the uptake of various energy saving measures, and the results of the analysis of these questions are presented in the guide. An action plan is presented which gives a number of ideas for energy saving measures suitable for application in the pharmaceutical industry. A potential for energy saving of 10 PJ per year costing Pound 34 million per year is indicated by comparing the performance of more efficient companies with others. (author)

  1. Uranium Industry Annual, 1992

    International Nuclear Information System (INIS)

    The Uranium Industry Annual provides current statistical data on the US uranium industry for the Congress, Federal and State agencies, the uranium and electric utility industries, and the public. The feature article, ''Decommissioning of US Conventional Uranium Production Centers,'' is included. Data on uranium raw materials activities including exploration activities and expenditures, resources and reserves, mine production of uranium, production of uranium concentrate, and industry employment are presented in Chapter 1. Data on uranium marketing activities including domestic uranium purchases, commitments by utilities, procurement arrangements, uranium imports under purchase contracts and exports, deliveries to enrichment suppliers, inventories, secondary market activities, utility market requirements, and uranium for sale by domestic suppliers are presented in Chapter 2

  2. China and industrialization

    OpenAIRE

    Macfarlane, Alan; Cullen, Christopher

    2004-01-01

    China was far in advance of the West in its technology and science by 1400. Yet the industrial revolution happened in the west. Christopher Cullen talks about some of the possible reasons for this puzzling fact.

  3. ATLAS rewards industry

    CERN Multimedia

    2006-01-01

    Showing excellence in mechanics, electronics and cryogenics, three industries are honoured for their contributions to the ATLAS experiment. Representatives of the three award-wining companies after the ceremony. For contributing vital pieces to the ATLAS puzzle, three industries were recognized on Friday 5 May during a supplier awards ceremony. After a welcome and overview of the ATLAS experiment by spokesperson Peter Jenni, CERN Secretary-General Maximilian Metzger stressed the importance of industry to CERN's scientific goals. Close interaction with CERN was a key factor in the selection of each rewarded company, in addition to the high-quality products they delivered to the experiment. Alu Menziken Industrie AG, of Switzerland, was honoured for the production of 380,000 aluminium tubes for the Monitored Drift Tube Chambers (MDT). As Giora Mikenberg, the Muon System Project Leader stressed, the aluminium tubes were delivered on time with an extraordinary quality and precision. Between October 2000 and Jan...

  4. Nuclear techniques in industry

    International Nuclear Information System (INIS)

    Nuclear techniques are utilized in almost every industry. The discussion in this paper includes discussions on tracer methods and uses nucleonic control systems technology; non-destructive testing techniques and radiation technology. 1 fig., 2 tabs

  5. Uranium Industry Annual, 1992

    Energy Technology Data Exchange (ETDEWEB)

    1993-10-28

    The Uranium Industry Annual provides current statistical data on the US uranium industry for the Congress, Federal and State agencies, the uranium and electric utility industries, and the public. The feature article, ``Decommissioning of US Conventional Uranium Production Centers,`` is included. Data on uranium raw materials activities including exploration activities and expenditures, resources and reserves, mine production of uranium, production of uranium concentrate, and industry employment are presented in Chapter 1. Data on uranium marketing activities including domestic uranium purchases, commitments by utilities, procurement arrangements, uranium imports under purchase contracts and exports, deliveries to enrichment suppliers, inventories, secondary market activities, utility market requirements, and uranium for sale by domestic suppliers are presented in Chapter 2.

  6. Industrial applications at GANIL

    International Nuclear Information System (INIS)

    After a first round of industrial applications using heavy ion beams, GANIL has refocused these activities along the lines defined by a strategy and market study. Heavy ion industrial applications take their roots in the physical effects of the interactions occurring between heavy ion projectiles and matter. Specific equipments operated by GANIL or CIRIL allow users to take benefit from these effects. By heavy ion irradiation, industrial companies qualify radiation hardened electronic components and sensitize plastic films to produce 'nuclear track' membranes. Research and development programs with laboratories of the public sector, focus on heavy ion lithography dedicated to large area luminescent flat screens with field emitter microtips and on tribology with radioactive implanted ions. Even sometimes facing difficulties to fill the gap between industry and research, GANIL is eager to promote heavy ion beam technologies. (author) 36 refs., 6 figs., 5 tabs

  7. Uranium industry annual 1996

    International Nuclear Information System (INIS)

    The Uranium Industry Annual 1996 (UIA 1996) provides current statistical data on the US uranium industry's activities relating to uranium raw materials and uranium marketing. The UIA 1996 is prepared for use by the Congress, Federal and State agencies, the uranium and nuclear electric utility industries, and the public. Data on uranium raw materials activities for 1987 through 1996 including exploration activities and expenditures, EIA-estimated reserves, mine production of uranium, production of uranium concentrate, and industry employment are presented in Chapter 1. Data on uranium marketing activities for 1994 through 2006, including purchases of uranium and enrichment services, enrichment feed deliveries, uranium fuel assemblies, filled and unfilled market requirements, uranium imports and exports, and uranium inventories are shown in Chapter 2. A feature article, The Role of Thorium in Nuclear Energy, is included. 24 figs., 56 tabs

  8. Recycling of Glass Fibre Reinforced Aluminium Laminates and Silicon Removal from Aerospace Al Alloy

    OpenAIRE

    Zhu, G

    2012-01-01

    Aerospace aluminium alloys (7xxx and 2xxx series Al alloy) is one of the important Al alloys in our life. The recycling of aerospace Al alloy plays a significant role in sustainable development of Al industry. The fibre reinforced metal laminates GLARE including 67 wt.% 2024 Al alloy was used as upper fuselage in Airbus A380, but the solution for GLARE recycling is not available. Thermal recycling which uses high temperature to decompose the resin and separate the reinforcement fibres and fil...

  9. Immunotechnology and industry.

    Science.gov (United States)

    Inglis, J R

    1983-05-01

    In 1980, the year Immunology Today began, around 80 advertisements in Science offered jobs to postdoctoral scientists with experience of different aspects of immunology. 80 % of them were in academic institutions - universities, medical schools, research units and the like - while the remaining 20% were in industry. In 1982 the corresponding number of job offers was around 120 and industry supplied fully half of them - an indication of a three-fold increase in total recruitment. PMID:25291662

  10. The Italian Music Industry

    OpenAIRE

    Barbarito Luca; Ardizzone Antonella

    2010-01-01

    The Music Industry is a complex system in which many different actors interact. In this system there are suppliers of musical instruments, music schools, authors, singers, the phonographic industry, live events organizations and also the suppliers of those electronic devices necessary to listen to the music. This paper tries to analyze the size of those segments, their changes, and which are the key nodes in this system. Also the way we listen to music has changed a lot in this last 10 years,...

  11. Uranium industry annual, 1988

    International Nuclear Information System (INIS)

    This report presents data on US uranium raw materials and marketing activities of the domestic uranium industry. It contains aggregated data reported by US companies on the ''Uranium Industry Annual Survey'' (1988), Form EIA-858, and historical data from prior data collections and other pertinent sources. The report was prepared by the Energy Information Administration (EIA), the independent agency for data collection and analysis with the US Department of Energy

  12. Handbook of industrial lighting

    CERN Document Server

    Lyons, Stanley L

    2013-01-01

    Handbook of Industrial Lighting is a practical guide on the specification, design, installation, operation, and maintenance of lighting in industrial premises. Coverage of the book includes the importance of good localized lighting; the different lighting schemes; lighting for difficult visual tasks; lighting in consideration to safety; and emergency lighting. The book also includes the practical, thermal, ventilation, and energy considerations; lighting in different environments; maintenance of lighting installations; and the cost benefits of efficient lighting. Appendices include useful info

  13. Industrial waste pollution

    Science.gov (United States)

    Jensen, L. D.

    1972-01-01

    The characteristics and effects of industrial waste pollution in the Chesapeake Bay are discussed. The sources of inorganic and organic pollution entering the bay are described. The four types of pollutants are defined as: (1) inorganic chemical wastes, (2) naturally occurring organic wastes, (3) synthetic organic wastes (exotics) and (4) thermal effluents. The ecological behavior of industrial wastes in the surface waters is analyzed with respect to surface film phenomena, interfacial phenomena, and benthis phenomena

  14. Industrial Fuel Flexibility Workshop

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2006-09-01

    On September 28, 2006, in Washington, DC, ITP and Booz Allen Hamilton conducted a fuel flexibility workshop with attendance from various stakeholder groups. Workshop participants included representatives from the petrochemical, refining, food and beverage, steel and metals, pulp and paper, cement and glass manufacturing industries; as well as representatives from industrial boiler manufacturers, technology providers, energy and waste service providers, the federal government and national laboratories, and developers and financiers.

  15. Entrepreneurship in Creative Industries

    OpenAIRE

    Jūratė Černevičiūtė

    2011-01-01

    Creative industries topic is closely related to the art markets in a variety of mediation forms. Traditional business entrepreneurship is risk-related activities implementing innovations in markets, and generating economic growth. The creative industry area has plenty of innovation, but its acceptance is more complex because of the cultural world’s participants’ agreements. Cultural world has its own social organization, associated with the mediation (including entrepreneurship) types. The ar...

  16. The Natural Gas Industry

    OpenAIRE

    Broadman, Harry G.

    1985-01-01

    The move to deregulate natural gas field markets is likely to stimulate changes in the way the downstream segments of the industry are regulated. In particular, because the uncertainty endemic to freer upstream markets will emerge for the first time in the contemporary gas industry, the relative merits of having pipelines perform different economic functions will be altered. Producers and distributors will also, in varying degrees, face greater price uncertainty than before. This will lead to...

  17. Shipping Industry Structure

    OpenAIRE

    Wijnolst, N.; Waals, F.

    1999-01-01

    Understanding Shipping Management requires a thorough understanding of the Shipping Industry Structure. This book provides this knowledge base and should be seen in conjunction with two other books: Shipping and Design Innovation in Shipping. Shipping Industry Structure was intended as the first part of a book on shipping management; the second part should discuss the different management domains in shipping, such as strategy, finance, investment and risk, marketing, operations, organisation ...

  18. Industrial communication technology handbook

    CERN Document Server

    Zurawski, Richard

    2014-01-01

    Featuring contributions from major technology vendors, industry consortia, and government and private research establishments, the Industrial Communication Technology Handbook, Second Edition provides comprehensive and authoritative coverage of wire- and wireless-based specialized communication networks used in plant and factory automation, automotive applications, avionics, building automation, energy and power systems, train applications, and more.New to the Second Edition:46 brand-new chapters and 21 substantially revised chaptersInclusion of the latest, most significant developments in spe

  19. Machine vision for industry

    OpenAIRE

    Ribeiro, António Fernando

    1996-01-01

    Nowadays, industry is changing its way of working in order to get more competitive. Industry wants to get more and more automated in order to reduce production times, increase productivity, improve quality production, at a cheaper cost, to be less wasteful, with less need to have a skilled operative, to be more flexible meaning easy to implement changes and possible to leave the automated process working with little supervision around the clock. Vision in Robotics helps controlling product...

  20. Industry Service - Technology Centre

    DEFF Research Database (Denmark)

    Hollensen, Svend; Grünbaum, Niels Nolsøe

    The chapter describes and explains the development of an Industry Service Technology (IS-T) portal solution at Danfoss for testing of products, including booking system for standardised 'service packages' in order to reduce waiting time.......The chapter describes and explains the development of an Industry Service Technology (IS-T) portal solution at Danfoss for testing of products, including booking system for standardised 'service packages' in order to reduce waiting time....

  1. Petroleum industry in 2004

    International Nuclear Information System (INIS)

    This document presents a detailed outlook of the petroleum industry in the world and more particularly in France in 2005: evolution of crude oil prices; petroleum exploration and production in the world and in France; the French para-petroleum and petroleum industry; the oil supplies; the refining activities; the evolution of products quality and the substitution fuels; the domestic transports, the storage and consumption of petroleum products; the fiscality, prices and distribution of petroleum products. (J.S.)

  2. Insurance in Tourism Industry

    OpenAIRE

    Taleski, Petar; Taskov, Nako

    2011-01-01

    The issue of cost and availability of insurance, particularly for tourism operators, has become a common issue for the tourism industry across European Union. It has been particularly problematic in those jurisdictions that have a high number of adventure and eco-tourism operators. The main challenge appears to be in relation to securing commercial general liability coverage and/or obtaining such coverage on a cost effective basis. One of the problems is that the tourism industry does not ...

  3. Botulinum toxin industry : is it a profitable industry to enter?

    OpenAIRE

    Salopek, Barbara

    2009-01-01

    This paper examines the botulinum toxin industry and is it profitable to enter. In particular, the paper aims to define whether the industry structure is attractive because an industry is considered profitable only if it has attractive structure. This has been explored through applying the Porter’s five forces framework which provides a good understanding of farces shaping the industry and thus help to define the industry structure. It has been shown that the BTX industry has b...

  4. Industrial psychology and industrial relations a South African perspective

    OpenAIRE

    C. M. Tustin; Flowers, J.

    1993-01-01

    Given the potential value of industrial psychology's contribution to the inter-disciplinary field of industrial relations, and given its rather indifferent past record in this respect, the purpose of this study is to clarify the role of industrial psychology in industrial relations. The opinions of registered industrial psychologists in South Africa were surveyed about those issues in which industrial psychology does have a role to play. Respondents confirmed an ongoing mutual indifference be...

  5. OCT for industrial applications

    Science.gov (United States)

    Song, Guiju; Harding, Kevin

    2012-11-01

    Optical coherence tomography (OCT), as an interferometric method, has been studied as a distance ranger. As a technology capable of producing high-resolution, depth-resolved images of biological tissue, OCT had been widely used for the application of ophthalmology and has been commercialized in the market today. Enlightened by the emerging research interest in biomedical domain, the applications of OCT in industrial inspection were rejuvenated by a few groups to explore its potential for characterizing new materials, imaging or inspecting industrial parts as a service solution[3]. Benefiting from novel photonics components and devices, the industrial application of the older concepts in OCT can be re-visited with respect to the unique performance and availability. Commercial OCT developers such as Michelson Diagnostics (MDL; Orpington, U.K.) and Thorlabs (Newton, NJ) are actively exploring the application of OCT to industrial applications and they have outlined meaningful path toward the metrology application in emerging industry[3]. In this chapter, we will introduce the fundamental concepts of OCT and discuss its current and potential industrial applications.

  6. Industrial services at CERN

    CERN Multimedia

    2002-01-01

    The Bulletin looks at industrial services contracts and the real impact of the cost reductions at CERN. The level of industrial services contracts varies from one phase to another. For example, during the dismantling of LEP (photo) it rose substiantially to fall again at the end of dismantling. Industrial services contracts are an important resource for CERN. The level and nature of such contracts changes according to the phase of operation of the Laboratory. A construction phase, as for the LHC, requires a higher level of industrial services contracts compared with a period of normal running. During the operation of LEP, industrial services contracts were thus maintained at a level of 120 MCHF per year. The level rose to 156 MCHF in 2001 to include contracts awarded for dismantling LEP, and fell to about 144 MCHF in 2002 when the dismantling was complete. During the whole LHC construction period, up to 2007, industrial services spending will be stable in the range 135-140 MCHF per year. For the running pe...

  7. HEALTH ASPECTS OF INDUSTRIALIZATION

    Directory of Open Access Journals (Sweden)

    A.Ghiami

    1973-03-01

    Full Text Available Any form of industrialization leads to cultural changes which may be rapid and extensive, and provoke considerable stress. Such changes are particularly extensive when developing countries are rapidly industrialized. Agricultural workers who move to industrial areas may shift from barter to a monetary economy. All of this is to them an entirely new way of living and so they try to keep contact with their place of origin. As a result their new life in the city and at home is disrupted. The traditional Social Forces and moral values which formerly exercised a stabilizing influence in the peasant culture are weakened. The result may be social disorganization which can have far reaching effects on community health and lead to behavioral disorders such as delinquency, crime, drug addictions and alcoholism and contribute to an increase in incidence of mental illness. During the period of industrialization the increase of food production may not be of the same order as the increase in production of industry. With the transfer of the population from rural areas to the industrial centers some changes of diet may occur. The health problems of the workers will often be related not only the environment. The workers might be exposed to hazardous physical, chemical and biological factors.

  8. Derivados vinculados al seguro.

    Directory of Open Access Journals (Sweden)

    De Paz Cobo, Sonia

    2003-01-01

    Full Text Available El presente trabajo tiene como objetivo la presentación de los derivados financieros como instrumentos de cobertura de los riesgos del seguro, así como de los principales proyectos que se desarrollan a través de los mismos, como por ejemplo los derivados sobre el clima. Hay que tener presente las pérdidas multimillonarias ocasionadas en casos como el de la banca Baring’s, o el de Orange County, por citar algunas, que si bien ciertos autores afirman que están en relación directa con el uso de estos productos, no podemos olvidar que los instrumentos derivados se desarrollaron con el objetivo principal de proteger al usuario de la posible volatilidad del activo subyacente. Ya en la industria aseguradora los derivados vinculados a tal actividad son instrumentos donde el pago se condiciona a la ocurrencia de su suceso de siniestro, o serie de sucesos múltiples que disparen las pérdidas. Tras el repaso efectuado y la descripción que este tipo de instrumentos puede tener en la gestión del riesgo por parte de la industria aseguradora, concluiremos con la exposición de las relaciones con el reaseguro tradicional así como una breve referencia al futuro de este tipo de instrumentos

  9. Gliricidia sepium al establecimiento

    Directory of Open Access Journals (Sweden)

    J. L. Valle

    2004-01-01

    Full Text Available Se asoció Cenchrus ciliaris (Cc y Gliricidia sepium (Gs para evaluar la producción de biomasa y la composición química de los forrajes en la fase de establecimiento, en el estado de Morelos, México, en condiciones de trópico seco. Se empleó un análisis de varianza con diseño en bloques al azar, en donde T1 fue pasto solo, T2 Cc más Gs con 5,000 plantas ha-1 y el T3 Cs más Gs con 14,285 plantas ha-1. Se midió la producción de forraje individual y asociado con materia seca (t MS/Ha, la altura (A en cm, la proteína cruda (PC%, las fracciones de fibra (FDN% y FDA% y la digestibilidad in vitro de la materia seca (DIVMS%. El T3 tuvo una mejor producción de biomasa (P0.05. La asociación de 14,285 plantas ha-1 de G. sepium con pasto Cenchrus ciliaris mejoró la producción de biomasa y la disponibilidad total de nutrientes por superficie cultivada al establecimiento

  10. Influence of impact speed on water droplet erosion of TiAl compared with Ti6Al4V

    Science.gov (United States)

    Mahdipoor, M. S.; Kirols, H. S.; Kevorkov, D.; Jedrzejowski, P.; Medraj, M.

    2015-09-01

    Water Droplet Erosion (WDE) as a material degradation phenomenon has been a concern in power generation industries for decades. Steam turbine blades and the compressor blades of gas turbines that use water injection usually suffer from WDE. The present work focuses on studying erosion resistance of TiAl as a potential alloy for turbine blades compared to Ti6Al4V, a frequently used blade alloy. Their erosion behaviour is investigated at different droplet impact speeds to determine the relation between erosion performance and impact speed. It is found that the relationship is governed by a power law equation, ER ~ Vn, where the speed exponent is 7-9 for Ti6Al4V and 11-13 for TiAl. There is a contrast between the observed speed exponent in this work and the ones reported in the literature for Ti6Al4V. It is attributed to the different erosion setups and impingement conditions such as different droplet sizes. To verify this, the erosion experiments were performed at two different droplet sizes, 464 and 603 μm. TiAl showed superior erosion resistance in all erosion conditions; however, its erosion performance exhibits higher sensitivity to the impact speed compared to Ti6Al4V. It means that aggressive erosion conditions decrease the WDE resistance superiority of TiAl.

  11. An Exploratory Study of The Malaysian Chemical Industry

    OpenAIRE

    Lee, Chun Hooi

    2008-01-01

    With the force of globalization and huge product commoditization pressure in the Business-To-Business (B2B) markets, the B2B marketers have turn their attention to branding in order to tap the brand potential from their product and corporate name. The main objective of this dissertation is to explore the industrial brand value and B2B brand equity in the context of the Malaysian chemical industry. The industrial brand value is explored by using the pinwheel model proposed by Mudambi et al (19...

  12. Aglomeración industrial en el centro oriente colombiano

    OpenAIRE

    Helmuth Arias Gómez

    2012-01-01

    El artículo pretende analizar las características de la especialización industrial en los departamentos del centro oriente colombiano, partiendo de un conjunto de consideraciones teóricas sobre la aglomeración industrial. Se expone una revisión histórica del emplazamiento industrial en la región, para confirmar la fuerza que adquieren los procesos de causación acumulativa. Al final se aplica un ejercicio empírico que se proponemodelar la influencia o no de los spillover intra industria e inte...

  13. Grasp Densities for Grasp Refinement in Industrial Bin Picking

    DEFF Research Database (Denmark)

    Hupfauf, Benedikt; Hahn, Heiko; Bodenhagen, Leon;

    Automatic picking of randomly distributed objects from a bin has been denoted the "Holy Grail" in the world of robot automation. A particular property of the bin-picking scenario (in contrast to most other industrial robot applications) is that grasp errors are allowed to occur: Usually bin......, constituting (to our knowledge) one of the first examples of grasp learning in industrial robotics....... generated in industrial bin-picking for grasp learning. This aim is achieved by using the novel concept of grasp densities (Detry et al., 2010). Grasp densities can describe the full variety of grasps that apply to specific objects using specific grippers. They represent the likelihood of grasp success...

  14. Textile Industrial Clusters in China

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    "National Textile Industry Cluster Development Seminar" convened, held by China National Textile and Apparel Council, 23 cities and towns were awarded as China’s Textile Industry Cluster Pilot District. By far, China’s textile industrial clusters have grown

  15. Structure analysis of Al cast alloy

    Directory of Open Access Journals (Sweden)

    L.A. Dobrzański

    2008-03-01

    Full Text Available Purpose: The developed design methodologies both the material and technological ones will make it possible to improve shortly the quality of materials from the light alloys in the technological process, and the automatic process flow correction will make the production cost reduction possible, and - first of all - to reduce the amount of the waste products.Design/methodology/approach: Castings were analysed in the paper of car engine blocks and heads from the Al-Si-Cu alloys of the AC-AlSi7Cu3Mg type fabricated with the “Cosworth” technological process. In this work the AC-AlSi7Cu3Mg alloy structure was investigated, of this alloy samples were cut of for structure analysis of the cylinder part as well of crankshaft of a fuel engine. The investigation show a difference in the (phase structure morphology as a result of cast cooling rate.Findings: On the quality of casting has influence the walls thickness of car engine elements’.Practical implications: In the metal casting industry, an improvement of component quality depends mainly on better control over the production parameters.Originality/value: The value of the applied methodology was to correct identify the casting effects that occurred during the casting process.

  16. Preparation Process and Characteristics Analysis of Ni-Al System Intermetallic Compound Coatings

    Institute of Scientific and Technical Information of China (English)

    SUN Hong-fei; WANG Can-ming; WAN Dian-mao; JIN Tao; SONG Qiang

    2004-01-01

    Ni-Al system intermetallic compound coatings were acquired on the substrates of Nickel base superalloy by thermal spray accompanied with metallurgy and diffusion process. The main phases in the coatings are NiAl and Ni3Al and the microstructure of the coatings are dense. The coatings bond well with the substrates and show excellent characteristics of oxidation-resistance at temperature as high as 1300℃. The coatings have been applied successfully in industry.

  17. NEMS industrial module documentation report

    Energy Technology Data Exchange (ETDEWEB)

    1994-01-01

    The NEMS Industrial Demand Model is a dynamic accounting model, bringing together the disparate industries and uses of energy in those industries, and putting them together in an understandable and cohesive framework. The Industrial Model generates mid-term (up to the year 2010) forecasts of industrial sector energy demand as a component of the NEMS integrated forecasting system. From the NEMS system, the Industrial Model receives fuel prices, employment data, and the value of output of industrial activity. Based on the values of these variables, the Industrial Model passes back to the NEMS system estimates of consumption by fuel types.

  18. Epitaxial growth of Al/Al2O3 multilayer structures

    International Nuclear Information System (INIS)

    In order to obtain Al-Al2O3 quantum effect devices, it is necessary to deposit epitaxially Al on Al2O3 and Al2O3 on Al. We have already obtained an epitaxial Al/Al2O3/Al structures on Si(111). In this paper, we have deposit Al/Al2O3/Al structures on Si(111), and investigated the crystallinity by using RBS. (author)

  19. Doppelthydrophile Blockcopolymere als Mineralisationstemplate

    Science.gov (United States)

    Kasparova, Pavla

    2002-07-01

    Die vorliegende Arbeit beschäftigt sich mit der Synthese und den Eigenschaften von doppelthydrophilen Blockcopolymeren und ihrer Anwendung in einem biomimetischen Mineralisationsprozeß von Calciumcarbonat und Bariumsulfat. Doppelthydrophile Blockcopolymere bestehen aus einem hydrophilen Block, der nicht mit Mineralien wechselwirkt und einem zweiten Polyelektrolyt-Block, der stark mit Mineraloberflächen wechselwirkt. Diese Blockcopolymere wurden durch ringöffnende Polymerisation von N-carboxyanhydriden (NCA's) und a-methoxy-ω-amino[poly(ethylene glycol)] PEG-NH2 als Initiator hergestellt. Die hergestellten Blockcopolymere wurden als effektive Wachstumsmodifikatoren für die Kristallisation von Calciumcarbonat und Bariumsulfat Mineralien eingesetzt. Die so erhaltenen Mineralpartikel (Kugeln, Hantel, eiförmige Partikel) wurden durch Lichtmikroskopie in Lösung, SEM und TEM charakterisiert. Röntgenweitwinkelstreuung (WAXS) wurde verwendet, um die Modifikation von Calciumcarbonat zu ermitteln und die Größe der Calciumcarbonat- und Bariumsulfat-Nanopartikel zu ermitteln. This work describes the synthesis and characterization of double hydrophilic block copolymers and their use in a biomimetic mineralization process of Calcium Carbonate and Barium Sulfate. Double hydrophilic block copolymers consist of a hydrophilic block that does not interact with minerals and another hydrophilic polyelectrolyte block that strongly interacts with mineral surfaces. These polymers were synthesised via ring opening polymerisation of N-carboxyanhydride (NCA), and the first hydrophilic block a-methoxy-ω-amino[poly(ethylene glycol)] PEG-NH2 was used as an initiator. The prepared block copolymers were used as effective crystal growth modifiers to control the crystallization of Calcium Carbonate and Barium Sulfate minerals. The resulting mineral particles (spheres, dumbbells, egg-like particles) were characterised by light microscopy in solution, by SEM, and by TEM. X-Ray scattering

  20. The Effects of Industrial Wastes of Memphis and Shelby County on Primary Planktonic Producers

    Science.gov (United States)

    Staub, R.; And Others

    1970-01-01

    Diversity and total numbers of plankton, particularly diatoms, were analyzed and correlated with physical factors of water. Diversity index values appear to provide an indication of pollution of water by industrial and domestic wastes. (AL)

  1. Effect of Al2O3 and AlCrN coatings on 950°C cyclic oxidation behaviours of γ-TiAl

    Directory of Open Access Journals (Sweden)

    J. Małecka

    2012-01-01

    Full Text Available Purpose: The reason for this research is to test the intermetalic alloy with coatings Al2O3 and AlCrN improved oxidation resistance in air at temperatures 950ºC, typical for working conditions of highly loaded parts of gas turbine.Design/methodology/approach: The objectives were achieved using several techniques including conventional metallography, SEM, BSE, EDX and precision measurements of mass loss. The oxides scales and their effects were investigated at temperatures 950ºC.Findings: This investigation confirms that the deposited AlCrN coating significantly reduces spalling processes and makes for lesser mass growth of the oxidized alloy. Heat resistance of the alloy coated with a protective film of Al2O3 is higher than in the initial state alloy. This coating adds to reducing the oxidation rate and causes the mass growth to be smaller compared to the uncoated layer.Research limitations/implications: The basic limitations concern alloys in another temperature and also, atmosphere with content of SO2 should be tested.Practical implications: One of practical outcomes is to select the coatings which guarantee the reduction of oxidation behavior. It is recommended to use alloys with Al2O3 and AlCrN coatings.Originality/value: Original value of the paper is assessing of the oxidation resistance of Ti-46Al-7Nb-0.7Cr-0.1Si-0.2Ni-based intermetallic alloy with the Al2O3 and AlCrN coatings. The novelty of this research deals with the mechanism of oxidation alloy with this coatings. This knowledge can support the design of parts made of the intermetalic alloy. The problem considered is currently important for aeroplane and automotive industry, especially for gas turbine manufacturers.

  2. Industrial Section Convenor's Report

    Science.gov (United States)

    Barone, M.; Riboni, P.

    2002-11-01

    Over the years this conference has gained a solid reputation as an appropriate rostrum for illustrating new concepts in the relations between industry and the scientific world and for introducing new technologies to a large assistance of junior and more experienced scientists. In fact, from the very beginning the founders of this endeavour announced: "The conference is aimed for promoting contacts among scientists involved in particle and fundamental physics, among experimental physicists in other fields and representatives from industry." Facilities at the Conference are designed to fulfil the task: space and general facilities are offered to industry representatives to display their products. This year a more accessible and luminous space arrangement was made available to the exhibitors. At the same time two plenary sessions have been dedicated to selected speakers to illustrate new trends in Technology Transfer, analysis of environment affecting our community, examples of historical successes in the merging of science and industry. We have identified in "GRID" and in "E-Publishing" two major promising areas where our Community will play a prime role as "User" and it was of the general interest to have them illustrated by two personalities directly involved in their development. The flow of knowledge is of course more massive from "Industry" to "Science" than vice-versa, but "Science" to "Industry" move offers an intensive added value. The technology transfer concept with the "Patents" as fund raising tool proved less glorious than expected. Trademark, licensing agreement and " Patents" can assure intellectual properties. But patent is an issue to be used cautiously. Evidence exists that much more efficient transfer of "Science" knowledge to "Economy" is achieved by venture capital move and start-up companies. These two facets of the Technology Transfer business have been covered by Routti's and Bourgeois's lectures.There are two examples of Companies who moved

  3. Fretting wear performances of multilayered PVD TiAlZrN/TiAlN/TiAl on AISI 4140 steel

    OpenAIRE

    Tlili, Brahim; NASRI, Mustapha; F. Ayari; Nouveau, Corinne

    2008-01-01

    Nowadays, most surface treatments are realized through vapor deposition techniques as thin hard coatings to guarantee; high surface hardness, low friction coefficient and improve wear resistance. Several experimental investigations have let to the development of a (TiAlCN/TiAlN/TiAl) and (TiAlZrN/TiAlN/TiAl) coatings in preference to the traditional TiN coating. In the current paper research conducted on fretting wear of a (TiAlCN/TiAlN/TiAl) and a (TiAlZrN/TiAlN/TiAl) multilayer coatings de...

  4. How isotopes benefit industry

    International Nuclear Information System (INIS)

    The life of bus engines and the time taken to make beer are not at first sight connected with atomic energy. Yet the first has been considerably lengthened and the second even more considerably shortened in different countries as a result of using nuclear techniques and materials. They are only two examples; there are many others which have improved efficiency in factories, oilfields, chemical plants and other industries. They indicate not only the results of ingenuity but the rewards possible from more widespread use of the new methods. At a symposium on radioisotope tracers in industry and geophysics organized by the Agency and held in Prague during November many reports showed not only what is possible but what is actually being accomplished in a number of industries as a matter of daily routine. The economic benefits were also demonstrated, and although the developments have been mainly in countries already highly industrialized, the potential for new industries in developing countries was clear. Research to improve performance of motorcar, aircraft and tractor engines has been directed at establishing the causes of friction, corrosion and wear. In brewing beer it has been possible to accelerate fermentation. Pollution both of water and air can be reduced and methods of waste disposal improved. Many economies have been effected in oil production. Better quality and lower costs have resulted from work in chemical plants and processes such as glass making, metal refining, plastics and many others. Dams and railways were also mentioned among the great variety of subjects suitable for radioisotope techniques

  5. Microstructural characterization of Cu/Al composites and effect of cooling rate at the Cu/Al interfacial region

    Institute of Scientific and Technical Information of China (English)

    Yan-qiu Han; Li-hua Ben; Jin-jin Yao; Chun-jing Wu

    2015-01-01

    Cu/Al composites are of vital importance in industrial applications because of their numerous advantages. The influence of bond-ing temperature and cooling rate on the microstructure and morphology of Cu/Al composites was investigated in this paper. The interfacial morphology and constituent phases at the Cu/Al interface were analyzed by optical microscopy and field-emission scanning electron mi-croscopy equipped with energy-dispersive X-ray spectroscopy. The results indicate that effective Cu–Al bonding requires a higher bonding temperature to facilitate interdiffusion between the two metals. The microstructural characteristics are associated with various bonding tem-peratures, which impact the driving force of interdiffusion. It is observed that cooling rate exerts a significant influence on the morphology and amount of the intermetallic compounds at the interfacial region. Meanwhile, microhardness measurements show that hardness varies with the bonding temperature and rate of cooling.

  6. Co-Mn-Al Layered Double Hydroxides on Al2O3/Al Foils and Their Use as Precursors of VOC Catalysts

    Czech Academy of Sciences Publication Activity Database

    Kovanda, F.; Jirátová, Květa; Ludvíková, Jana; Raabová, H.

    - : -, 2012, SP1-T2-P41. ISBN N. [International Conference on Environmental Catalysis /7./. Lyon (FR), 02.09.2012-06.09.2012] R&D Projects: GA ČR GAP106/10/1762 Institutional support: RVO:67985858 Keywords : Co-Mn-Al layered double hydroxide * hydrothermal reaction * supported mixed oxide catalysts Subject RIV: CI - Industrial Chemistry, Chemical Engineering http://www.icec2012.fr/en/home.html

  7. ELECTROLYSIS OF SWINE MANURE EFFLUENTS USING THREE DIFFERENT ELECTRODES Fe-Fe, Al-Al AND Fe-Al

    Directory of Open Access Journals (Sweden)

    S. Rahman

    2014-01-01

    Full Text Available Swine effluent with high organic strength need to be treated to make it suitable for applying to crop/pasture fields, or discharging to any waterways. Electrocoagulation is a relatively simpler and cheaper technique over biological and chemical treatment methods currently used to treat high-strength industrial and municipal wastewater. The performance of an electrocoagulation system mainly depends on the pH, Electrical Conductivity (EC of the medium, Chemical Oxygen Demand (COD loading rates and catalytic activity of the electrodes used. In this research, a study was conducted to compare the pollutant removal efficiencies of three electrodes (Fe-Fe, Al-Al and Fe-Al with three electric current levels (500, 1000 and 2000 mA while treating swine manure effluents. The electrochemical cell consisted of two parallel rectangular plates (90×25×1.5 mm of Iron (Fe-Fe, Aluminum (Al-Al and Iron-Aluminum (Fe-Al, later on described as hybrid electrodes; immersed in a beaker with 550 mL swine effluents and powered by a Direct Current (DC supply. All studies were conducted in batches at room temperature. In general, removal efficiencies were increased with increasing current densities and electrolysis times for electrodes evaluated. Aluminum electrodes outperformed iron and hybrid (iron-aluminum electrodes in removing Total Phosphorus (TP at all current density levels tested. Overall, use of hybrid electrodes resulted in better COD removal. For the same treatment times (1200 s at higher current density (21 mA cm-2, hybrid electrodes removed about 100% COD, which are about 1.9 and 1.3 times higher than those of aluminum and iron electrodes, respectively. Iron electrodes showed the highest removal efficiency (85% for Total Organic Carbon (TOC at 21 mA cm-2 current density and 1200 s treatment time. Overall, lower Specific Electrical Energy Consumptions (SEECs per kg of Pollutants (TP, COD and TOC were estimated for the aluminum

  8. Tomate industrial con riego por cinta

    OpenAIRE

    Adán Fimbres-Fontes

    2004-01-01

    La región agrícola de Caborca cuenta con una superficie de 40 000 ha, las cuales se riegan con agua proveniente de aproximadamente 700 pozos. El abatimiento del manto acuífero es, en promedio, de 0.82 m año-1 y, en 25 años, ha sido de 20.50 m, medidos al nivel estático. El agua es uno de los factores más importantes en la producción de cualquier cultivo en la región. El objetivo del presente trabajo fue optimizar la cantidad de agua por aplicar al tomate industrial cultivado con riego por cin...

  9. Industrial experience with titanium

    International Nuclear Information System (INIS)

    Titanium is a reference material for the construction of waste containers in the Canadian Nuclear Fuel Waste Management Program. It has been in industrial service for over 30 a, often in severe corrosion environments, but it is still considered a relatively exotic material with limited operating history. This has arisen because of the aerospace applications of this material and the misconception that the high strength-to-weight ratio dominates the choice of this material. In fact, the advantage of titanium lies in its high reliability and excellent corrosion resistance. It has a proven record in seawater heat exchanger service and a demonstrated excellent reliability even in polluted water. For many reasons it is the technically correct choice of material for marine applications. In this report we review the industrial service history of titanium, particularly in hot saline environments, and demonstrate that it is a viable waste container material, based upon this industrial service history and operating experience. (author)

  10. Servitization in industry

    CERN Document Server

    2014-01-01

    Presenting both a comprehensive collection of sectorial studies of servitization in manufacturing industries, on the one hand, and research investigating the necessity to adapt various processes and departments of manufacturing companies to servitized business models, on the other, ‘Servitization in Industry’ informs the scientific and managerial servitization debate with recent data regarding industrial servitization models. This book provides detailed analyses of manufacturing sectors that elucidate the options and barriers related to servitization from a sector-based perspective. This sector-based approach allows for an individual and in-depth examination of recent relationships among manufacturers and their clients by explaining leads and lags in servitization. Serving to maximize reader insight into the specific characteristics of different sectors with their barriers and potentials, the book presents frameworks for successful servitization of the core sectors in European manufacturing industries whi...

  11. Iran Car Industry Policies

    Directory of Open Access Journals (Sweden)

    Iraj Koohi

    2006-01-01

    Full Text Available Iran government has taken a new policy called Import Replacement in the recent three decades. Although export extension is the future goal of this industry. We have got four periods during these years. The first period is an abortive support to this industry without any schedule. The second period during the time of the imposed war is a decade of effort to exist. But the outcome was to move awkwardly. The third period is at the same time as the economic modification policy and is a kind of lost opportunity with positive actions but in year 1974 this industry was born and came in to existence again, the outset of investments that can draw a clear vision into the future.

  12. Industrial nuclear property

    International Nuclear Information System (INIS)

    The first requests for patents for the use of nuclear power filed in France in 1939. This paper reviews the regulations on industrial nuclear property in various countries. The patenting system in several socialist countries is characterized by the fact that inventions on the production and use of radioactive materials may not be patented. This equally applies in India. In the United States, this type of invention may be patented except for those involving military uses and which must be notified to the federal authorities. In France, all industrial nuclear property is grouped under the same body, Brevatome, created in 1958, which enables the allocation of rights to be negotiated between the different interested parties, the Atomic Energy Commission (CEA), Electricite de France (EDF) and private industry. Under the Euratom Treaty, all inventions, even those governed by secrecy in Member countries, must be communicated to the Commission of the European Communities. (NEA)

  13. Industrial Assessment Center Program

    Energy Technology Data Exchange (ETDEWEB)

    Dr. Dereje Agonafer

    2007-11-30

    The work described in this report was performed under the direction of the Industrial Assessment Center (IAC) at University of Texas at Arlington. The IAC at The University of Texas at Arlington is managed by Rutgers University under agreement with the United States Department of Energy Office of Industrial Technology, which financially supports the program. The objective of the IAC is to identify, evaluate, and recommend, through analysis of an industrial plant’s operations, opportunities to conserve energy and prevent pollution, thereby reducing the associated costs. IAC team members visit and survey the plant. Based upon observations made in the plant, preventive/corrective actions are recommended. At all times we try to offer specific and quantitative recommendations of cost savings, energy conservation, and pollution prevention to the plants we serve.

  14. CEA and mining industry

    International Nuclear Information System (INIS)

    The French atomic energy commission (CEA) is involved in the mining industry in several ways: - in the front-end of the nuclear industry through its daughter companies and participations in the exploration and exploitation of uranium ores, but also of gold and alloy metals with a 26% participation in Eramet company, the world leader of manganese and nickel. This activity is the main occupation of Cogema daughter company, via the Areva holding; - in the back-end of the nuclear fuel cycle with the delicate problem of the management of radioactive wastes; - in parallel with the nuclear industry through an important activity in semiconductor materials (FCI and SMTElectronics); - and finally through various research works on several mineral compounds. This article focusses on the fuel cycle aspects of the CEA activities and concludes with the research works carried out today on thermonuclear fusion. (J.S.)

  15. Computerized industrial tomography

    International Nuclear Information System (INIS)

    Computerized Tomographic (CT) has been used for a number of applications in the field of medicine and industry. For the last couple of years, the technique has been applied for the material characterization and detection of defects and flaws inside the industrial components of nuclear, aerospace and missile industries. A CT scanner of first generation was developed at the institute. The scanner has been used to demonstrate couple of applications of CT in the field of non destructive testing of materials. The data acquired by placing the test objects at various angles and scanning the object through a source detector assembly has been processed on a Pentium computer for image reconstruction using a filtered back projection method. The technique has been developed which can be modified and improved to study various other applications in materials science and a modern computerized tomographic facility can be established. (author)

  16. Competing For industry Resources

    International Nuclear Information System (INIS)

    This presentation by Norway's Minister of Petroleum and Energy describes (1) Norway in the energy picture, (2) oil market developments, (3) the establishment of an energy policy and (4) the investment level of the Norwegian petroleum activities. Value creation from Norwegian petroleum resources is directly connected with the commercial companies' participation in the activities. Thus, it has been a main challenge for Norway to establish a balanced petroleum policy and a legal framework. Presumably Norway will remain a prospective and attractive petroleum province for a long time. Over the years, Norway has developed three very competent and competitive national oil companies and a significant national supply industry. This industry is highly competitive internationally. Many new petroleum provinces are opening up for foreign investors and energy consumption of the world is expected to increase significantly the next 20 - 30 years. This implies increased demand for the products, but also strong competition for industry resources

  17. Nuclear power industry

    International Nuclear Information System (INIS)

    This press dossier presented in Shanghai (China) in April 1999, describes first the activities of the Framatome group in the people's republic of China with a short presentation of the Daya Bay power plant and of the future Ling Ao project, and with a description of the technological cooperation with China in the nuclear domain (technology transfers, nuclear fuels) and in other industrial domains (mechanics, oil and gas, connectors, food and agriculture, paper industry etc..). The general activities of the Framatome group in the domain of energy (nuclear realizations in France, EPR project, export activities, nuclear services, nuclear fuels, nuclear equipments, industrial equipments) and of connectors engineering are presented in a second and third part with the 1998 performances. (J.S.)

  18. Offshore Supply Industry Dynamics

    DEFF Research Database (Denmark)

    Roslyng Olesen, Thomas

    challenges and opportunities for the companies engaged in the different parts of the sector. The report is developed from interviews with top management of key players in the Danish supply industry combined with studies on management literature. The macro- and meso levels of the offshore sector are examined...... at Copenhagen Business School with a focus on value creation in the maritime industries. The project embraces various maritime segments from shipping and offshore to ports and suppliers. The research questions for the individual projects have been formulated by researchers at CBS Maritime in...... cooperation with companies in the maritime sector. This report “Offshore Supply Industry Dynamics – Business strategies in the offshore supply industry” is the second report in mapping project D. It examines the markets and business strategies of various suppliers and furthermore presents an analysis of the...

  19. INDUSTRIAL RISK Programme development

    International Nuclear Information System (INIS)

    INC-DTCI ICIS Rm. Valcea conducts basic and applied research among which there is the INDUSTRIAL RISK Programme that comprises studies of risk analysis and evaluation at objectives and activities in zones were risk factors are in operation, factors leading potentially to natural or technological disasters. The risk analysis and evaluation methodology proposed is a follow-up of the action plan for risk reduction in industry. The risk management refers to risk and its components assessment and identification of places where improvements are to be introduced. The risk analysis and evaluation model was developed for installations in chemical industry and are also applicable for the installations of heavy water production by H2O-H2S isotopic exchange. The risk studies supply information necessary in making decisions, aiming at preventing the operation incidence and reducing their consequences

  20. Coal Industry Bill

    International Nuclear Information System (INIS)

    Privatization of the British hardcoal mining industry enters into the final stage. The statutory basis will be created by the 'Coal Industry Bill' being discussed at present in Parliament and which will probably be signed by the Queen in summer 1994 and then become a law. The 'Coal Industry Bill' stipulates in detail in which way British Coal will be dissolved and which competences will be transferred to the newly created coal authority. The allocation of powers and responsibilities to successor organizations will be determined as well as the role of the state for e.g. pension and concessionary commitments. Another important subject is the distribution of the charges for mining damages, and reclamation and environmental protection. (orig.)

  1. Service to industrial markets

    International Nuclear Information System (INIS)

    Niagara Mohawk supports efforts to deregulate the natural gas industry. Competition has existed in the gas industry for some time and it is here to stay. While increased competition can benefit all customers, transition to more fully deregulated markets will create winners and losers. Niagara Mohawk intends to focus on the opportunities and be a winner. Unbundled transportation service has been offered for about seven years and a form of no notice services for two and one half years. Last year we were the first to introduce capacity brokering service in New York. We plan to work with the NYS Public Service Commission to offer an expanded menu of additional gas services to industrial customers. We're looking at doing this within the regulatory framework thereby capturing benefits for the firm ratepayer while avoiding the duplication and added expense of an independent marketing entity. The services that Niagara Mohawk plans to offer its customers are described

  2. Lightweight Steel Solutions for Automotive Industry

    Science.gov (United States)

    Lee, Hong Woo; Kim, Gyosung; Park, Sung Ho

    2010-06-01

    Recently, improvement in fuel efficiency and safety has become the biggest issue in worldwide automotive industry. Although the regulation of environment and safety has been tightened up more and more, the majority of vehicle bodies are still manufactured from stamped steel components. This means that the optimized steel solutions enable to demonstrate its ability to reduce body weight with high crashworthiness performance instead of expensive light weight materials such as Al, Mg and composites. To provide the innovative steel solutions for automotive industry, POSCO has developed AHSS and its application technologies, which is directly connected to EVI activities. EVI is a technical cooperation program with customer covering all stages of new car project from design to mass production. Integrated light weight solutions through new forming technologies such as TWB, hydroforming and HPF are continuously developed and provided for EVI activities. This paper will discuss the detailed status of these technologies especially light weight steel solutions based on innovative technologies.

  3. Lightweight Steel Solutions for Automotive Industry

    International Nuclear Information System (INIS)

    Recently, improvement in fuel efficiency and safety has become the biggest issue in worldwide automotive industry. Although the regulation of environment and safety has been tightened up more and more, the majority of vehicle bodies are still manufactured from stamped steel components. This means that the optimized steel solutions enable to demonstrate its ability to reduce body weight with high crashworthiness performance instead of expensive light weight materials such as Al, Mg and composites. To provide the innovative steel solutions for automotive industry, POSCO has developed AHSS and its application technologies, which is directly connected to EVI activities. EVI is a technical cooperation program with customer covering all stages of new car project from design to mass production. Integrated light weight solutions through new forming technologies such as TWB, hydroforming and HPF are continuously developed and provided for EVI activities. This paper will discuss the detailed status of these technologies especially light weight steel solutions based on innovative technologies.

  4. Patrimonio industrial y rutas turísticas culturales: algunas propuestas para Argentina

    OpenAIRE

    Guillermina Fernández Zambón; Aldo Guzmán Ramos Schenk

    2005-01-01

    La actividad industrial, de cualquier época, tiene una gran importancia para el hombre, pues al igual que el resto de los procesos económicos, es el reflejo del accionar cotidiano de la sociedad sobre el espacio. Considerando esto, el presente articulo tiene como objetivo presentar al patrimonio industrial como recurso para organizar rutas turísticas que permitan en algunos casos recuperar espacios industriales abandonados o usar establecimientos industriales en funcionamiento ...

  5. Industry benefits from radioisotopes

    International Nuclear Information System (INIS)

    The International Atomic Energy Agency since its inception has always sought to promote the industrial use of radioisotopes. Among other ways, it has arranged scientific conferences on various aspects of the question, and has selected and published general information. Industry's attitude to any innovation, however, is the same the world over - viz. does it pay? The Agency, therefore, decided to collect information on the economic benefits derived from the use of radioisotopes in industry, described in terms of 'savings', It arranged for an international survey of these benefits, and at the same time for the collection of information on how radioisotopes are being utilized today. In April 1962 the Agency invited selected Member States to participate in the survey, and in response national governments collected detailed information from industrial organizations in their countries in the fields of prospecting, mining and manufacturing. The radioisotope techniques were grouped under the heads of radioisotope gauging, industrial radiography, ionization applications, tracing, massive irradiation and miscellaneous applications. The national reports from the participating countries recently reached the Agency, which is preparing a comprehensive report on radioisotope use and economics. In order to assess the contents of the various reports and to establish the best means of interpreting and presenting the material, the Agency convened a Study Group in Vienna from 16 to 20 March 1964. About 60 participants from Member States and international organizations discussed the reports, the latest developments in isotope utilization, and how the use of isotopes in industry could be further encouraged. The survey was prepared with care, as there have been few precedents to guide such an investigation on such a scale. Although its main purpose is to make an economic assessment, it has necessarily had to start with the consideration of techniques, and information was collected both

  6. The Russian gas industry

    International Nuclear Information System (INIS)

    The Russian Federation holds the world's largest proven natural gas reserves, and produces more natural gas than any other nation. Russian exports of gas to Europe and the other nations of the Commonwealth of Independent States (CIS) have a significant impact on natural gas markets throughout Europe and Asia. The aim of this three part study is to inform the international energy and investment community about the current status of the Russian gas industry and the prospects for its future development through 2010. It is also intended to provide an opportunity for the appropriate authorities in the Russian Federation to assess the needs of the industry and to consider areas for possible collaboration with the international investment community and international organizations in a rapidly changing economic and business environment. The study was prepared by the Energy Branch of the United Nations Department for Development Support and Management Services (UN/DDSMS). It was financed by the United Nations Development Programme (UNDP). Part I describes Russian gas reserves and potential resources, and overviews the country's gas producing, pipeline and distribution industries. Additionally, it summarizes the markets for Russian natural gas including domestic and external markets. It discusses the primary economics and potential factors that currently impact the Russian gas industry during the Federation's transition toward a market economy. Part II highlights possible directions for the development of the Russian gas resource base, including upstream gas production and downstream marketing in five-, ten- and fifteen-year time frames. It projects export opportunities for Russian Federation gas and evaluates the options for shaping regional and international markets. Part III addresses the legal and regulatory framework and fiscal regime of the Russian gas industry. It also reviews the major investment requirements and the equipment and training needs of the Russian gas

  7. Emulsified industrial oils recycling

    Energy Technology Data Exchange (ETDEWEB)

    Gabris, T.

    1982-04-01

    The industrial lubricant market has been analyzed with emphasis on current and/or developing recycling and re-refining technologies. This task has been performed for the United States and other industrialized countries, specifically France, West Germany, Italy and Japan. Attention has been focused at emulsion-type fluids regardless of the industrial application involved. It was found that emulsion-type fluids in the United States represent a much higher percentage of the total fluids used than in other industrialized countries. While recycling is an active matter explored by the industry, re-refining is rather a result of other issues than the mere fact that oil can be regenerated from a used industrial emulsion. To extend the longevity of an emulsion is a logical step to keep expenses down by using the emulsion as long as possible. There is, however, another important factor influencing this issue: regulations governing the disposal of such fluids. The ecological question, the respect for nature and the natural balances, is often seen now as everybody's task. Regulations forbid dumping used emulsions in the environment without prior treatment of the water phase and separation of the oil phase. This is a costly procedure, so recycling is attractive since it postpones the problem. It is questionable whether re-refining of these emulsions - as a business - could stand on its own if these emulsions did not have to be taken apart for disposal purposes. Once the emulsion is separated into a water and an oil phase, however, re-refining of the oil does become economical.

  8. Oil Price Uncertainty and Industrial Production

    OpenAIRE

    Karl Pinno; Apostolos Serletis

    2013-01-01

    We estimate a bivariate GARCH-in-Mean VAR with a BEKK variance speciÂ…fication, to investigate whether oil price volatility affects real economic activity. We use the same data set of thirty seven, aggregate and disaggregate, industrial production indices used by Herrera et al. (2011) as a proxy for real output and a post-1973 data sample. We check the robustness of our results by using two proxies for the price of oil, the West Texas Intermediate (WTI) oil price and the RefiÂ…ners' Â’Acquisi...

  9. Advanced programming languages for industrial robots

    International Nuclear Information System (INIS)

    With this report, the sponsor of the project on automation in manufacture introduces to the public several new programming procedures for industrial robots which are still under construction. In addition to the programming systems SRL - which, as already previously reported, represent an further development of the AL and ROBEX systems - two additional programming procedures are being described. These are adjusted to perform interactive work at the production site. As introduction to this report, a survey is offered on the status and development of robot programming in the Federal Republic of Germany and in other countries. (orig.)

  10. Industrial applications of radiations

    International Nuclear Information System (INIS)

    Radiation processing refers to the use of ionizing radiation to initiate chemical or biological changes in various materials as a substitute for conventional thermal or chemical processes. The method was inroduced in the industrial field 30 years ago and is now being widely used for numerous applications, among which industrial radiography, polymer modification, sterilization or decontamination, and food preservation. Both electron beam accelerators and gamma sources can be used, depending mainly of the amount of radiation and the penetration required. Radiation processing presents an increasing economical importance; in 1986 the market volume of ionized products ranged 3 billion $

  11. EU Industrial Policy

    DEFF Research Database (Denmark)

    Pellegrin, Julie; Giorgetti, Maria Letizia; Jensen, Camilla;

    Following disregard in the 1980s, industrial policy has recently attracted policy attention at EU level. The objective of this study provided by Policy Department A at the request of the ITRE Committee, is to establish the state of the art of a coordinated and integrated EU industrial policy. It...... assesses current initiatives, policies and arrangements and proposes an overview of stakeholders' positions at EU and national levels in order to feed into the debate on how to improve competitiveness and growth in Europe....

  12. Industry and energy

    International Nuclear Information System (INIS)

    This document is the provisional version of the summary of the debates of the 2433. session of the European Union Council about various topics relative to the industry and the energy. The energy-related topics that have been debated concern: the government helps in coal industry, the internal electricity and gas market, the trans-European energy networks, the bio-fuels in transportation systems, the energy charter, the pluri-annual energy program, and the green book on the security of energy supplies. (J.S.)

  13. Solar industrial process heat

    Energy Technology Data Exchange (ETDEWEB)

    Lumsdaine, E.

    1981-04-01

    The aim of the assessment reported is to candidly examine the contribution that solar industrial process heat (SIPH) is realistically able to make in the near and long-term energy futures of the United States. The performance history of government and privately funded SIPH demonstration programs, 15 of which are briefly summarized, and the present status of SIPH technology are discussed. The technical and performance characteristics of solar industrial process heat plants and equipment are reviewed, as well as evaluating how the operating experience of over a dozen SIPH demonstration projects is influencing institutional acceptance and economoc projections. Implications for domestic energy policy and international implications are briefly discussed. (LEW)

  14. Petroleum industry in 1991

    International Nuclear Information System (INIS)

    This book gives a general view on petroleum industry in 1991. In the first part, international petroleum market trend, hydrocarbons supply and demand, foreign trade and french petroleum market are described. In the second part, petroleum industry activities are inventoried: exploration and production, maritime and domestic transports, storage, refining, petroleum products quality, substitution fuels, commercialization and research programs. In the third part, an economic and financial analysis on the petroleum companies in 1991 is offered. In the last part, regulations concerning environmental protection and safety are developed

  15. Radioisotope applications in industry

    International Nuclear Information System (INIS)

    After a short mention of the economic importance of the industrial application of radioisotopes the most necessary fundamental principles of nuclear physics are given. The nature and the laws of the radioactive decay are illustrated, the interaction of radiation with matter and the absorption laws are described and the production of radioisotopes are mentioned. Subsequent the various detectors for measuring radioactivity are described with a short reference to the problems of the electronic measuring devices. At the end the various measuring techniques and the methods of application for radioisotopes in industry are illustrated. (author)

  16. Radiation and industry

    International Nuclear Information System (INIS)

    Isotope and radiation technology is increasingly being applied in various areas of industry, agriculture and medical science The industrial applications of these techniques are receiving particular attention because they are capable of saving energy and natural resources. The recent progress with, and the future prospects for, these technologies were discussed at an IAEA conference held recently. The conference was broad in scope, embracing exploration for minerals, sewage treatment; radiation processing, environmental conservation; nuclear instruments for process control; and the economic benefits of such techniques

  17. Malamih al-Ashwat al-'Arabiyyah wa Makharijaha

    Directory of Open Access Journals (Sweden)

    Amrah Muhammad Kasim

    2015-12-01

    Full Text Available This writing discusses on al-ashwat al-‘arabiyyah that is known with “phonetic” term. It talks and interprets makharij al-huruf or place for producing sounds and also processing production of sounds by parts of mouth in Arabic language. The problems of sounds and its systems in Arabic language have been conducted by the scholars of al-ashwat al-‘arabiyyah attractively, neatly, and detail and gotten ahead the phonetic western scholars. Part of their analysis results formulate the study about al-ashwat al-sakinah (al-Shamit is known with vocal and consonant sounds in research questions shawait – shawamit. Ibnu Jinni has formulated “harakat”(wowel in Arabic language and dimension of letter  mad and liyn on alif  letter - waw - ya’ (ا و ي, from these letters create  harakat fathah, dammah, and kasrah. Moreover, in this writing also exist the description of hija’i letters and its makhraj that are correct from parts of mouth and the unity of coordinative sounds that produce sounds in morphemes arrangement, in one word that produces meaning. The result of phonological study has divided al-ashwat to be kinds of sound like the pronounced sounds, produced sounds from mouth, and heard sound.

  18. Study of Manufacture Technology of In Situ Al2O3 Decomposed from Al2(SO4)3 Reinforced Aluminum Matrix Composites

    Institute of Scientific and Technical Information of China (English)

    Ouyang liuzhang; Luo Chengping; Sui Xiandong; Luo Zhuoxuan

    2000-01-01

    In situ Al2O3 decomposed from Al2(SO4)3 reinforced aluminum matrix composites was fabricated through stirring cast by adding Al2(SO4)3 to the molten alloy which is the raw and processed materials from which industrial high purity Al2O3 is made. Not only production cost may be reduced but also SO3 decomposed from Al2(SO4)3 may refine and remove the gas from the molten composites by the way stated before. As a result, Al2O3 and matrix bonded well, no cast defects being found, such as gas hole, porosity and particles segregation in in situ Al2O3 decomposed from Al2(SO4)3 reinforced aluminum matrix composites It is considered the key fact of particulate reinforced aluminum matrix composites really being produced in industrial that SO3 decomposed from Al2(SO4)3 may refine and remove the gas from the molten composites.

  19. Editorial: Cartas al Editor

    Directory of Open Access Journals (Sweden)

    Guillermo Llanos

    2006-06-01

    Full Text Available En todas las revistas biomédicas del mundo existe una sección habitual denominada como el título de este editorial y que en Colombia Médica la llamamos correspondencia. Este espacio tiene como objetivo fundamental que los lectores escriban a los autores (investigadores comentando los artículos que se han publicado en números anteriores de la revista. Las cartas son, entonces, breves comentarios de desacuerdo o acuerdo (conceptual, metodológico, interpretativo sobre falencias ubicadas por un lector alerta al tema debatido en cualquiera de las secciones como en los artículos originales, editoriales, revisiones, presentación de casos, etc. publicados previamente en la revista. Las cartas deben permitir el intercambio de opiniones y formas de pensar y analizar los problemas planteados entre los autores y los lectores. En ocasiones una serie de cartas motivadas por un artículo original puede ser tan o más interesante como el artículo que generó la correspondencia. Las cartas son también un formato adecuado para comunicar un hecho novedoso de una observación clínica juiciosa no descrita antes. Un ejemplo de ello es la carta de un gineco-obstetra australiano cuando informó a Lancet los primeros efectos adversos informados de la talidomida. Colombia Médica, a pesar de mantener vigente esta sección, no ha sido muy afortunada en establecer una buena cultura del envío de cartas al editor. Pero últimamente han llegado juiciosas observaciones a las cuales se les ha dado prioridad en su publicación. Toda carta que comenta los hallazgos de un artículo es enviada a los autores para su respuesta, porque ello genera el debate académico buscado, y luego se publican, tanto la carta como su respuesta. El Estilo Vancouver recomienda que la carta y su respuesta deban ser breve, no pasar de dos o tres párrafos y contener sólo cuatro o cinco referencias. En lo posible (a menos que sea indispensable no presentar ni cuadros ni gráficos. El t

  20. INDUSTRIAL CONCENTRATION IN CROATIAN FOOD AND BEVERAGE INDUSTRY

    OpenAIRE

    Maja Pervan; Monika Mlikota; Marina Sain

    2013-01-01

    The food and beverage industry represents one of the leading and most prospective industries in Croatia. Despite its importance, studies related to it are fairly rare, while the analysis of its market structure is non existent. Th erefore, the aim of this study was to fi ll this gap and to analyse the change of industrial concentration in Croatian food and beverage industry during the period from 1999 to 2011. Exploration of the changes in industrial concentration can help perceive and predic...