WorldWideScience

Sample records for bushings una tecnica

  1. A high sensibility technique to detect the incipient defects in high tension bushings; Una tecnica de alta sensibilidad para detectar defectos incipientes en boquillas de alta tension

    Energy Technology Data Exchange (ETDEWEB)

    Robles Pimentel, Edgar; Mestizo Rivera, Antolin; Romero Camberos, Ramon [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1995-12-31

    In this article a testing technique to locate incipient faults in transformer bushings is reported, specifically the one related to the internal disconnection of the capacitive tap, which is exemplified with a device having a problem of this kind. [Espanol] En el presente articulo se reporta una tecnica de prueba para localizar fallas incipientes en las boquillas de los transformadores, especificamente la relacionada con la desconexion interna del tap capacitivo, lo cual se ejemplifica con un dispositivo que padece un problema de ese tipo.

  2. Valutazione tecnica e finanziaria dei danni provocati da Heterobasidion annosum in una piantagione di douglasia in Calabria.

    OpenAIRE

    R.Fratini; Pellegrino, S; Capretti, P.

    2006-01-01

    Il testo esamina le fasi di una valutazione economica di una piantagione di douglasia (Pseudotsuga menziesii), sul massiccio Silano (Cosenza). Lo studio ha previsto il calcolo del valore di macchiatico di una fustaia, al 35° anno, con presenza di attacco fungino (Heterobasidion annosum) ed il confronto con una fustaia al 50° anno in cui si ipotizzano interventi di lotta biologica, con preparati disponibili in commercio, fin dal 35° anno. L’intervento di taglio anticipato presenta un macchiat...

  3. UNA TECNICA ESTADISTICA PARA MEDIR LA CONFLICTIVIDAD SOCIAL A TRAVES DEL REGISTRO ARQUEOLOGICO (A Statistical Technique to Measure Social Conflict through the Archaeological Record

    Directory of Open Access Journals (Sweden)

    Pascual Izquierdo-Egea

    2015-03-01

    Full Text Available Se presenta aqui una tecnica estadistica para medir la conflictividad social a traves del registro mortuorio. Nace al amparo del metodo de valoracion contextual empleado en el analisis de los ajuares funerarios desde 1993. Se trata de una herramienta fundamental para el desarrollo de la arqueologia de los fenomenos sociales, cuyos relevantes resultados empiricos avalan su trascendencia teorica. Tras proceder a su conceptualizacion en funcion de la desigualdad social y la riqueza relativa, se explican las dos clases de conflictividad social definidas: estructural o estatica y coyuntural o dinamica. Finalmente, se incluyen sus conexiones con la ley demografica de Malthus a traves de sus dos parametros: poblacion y recursos. Todo este entramado teorico se ilustra con algunas aplicaciones referidas a las civilizaciones antiguas, abarcando la protohistoria iberica, la Mesoamerica prehispanica o la Roma altoimperial. ENGLISH: A statistical technique to measure social conflict through the mortuary record is presented here. It is born under the contextual valuation method used in the analysis of grave goods since 1993. This is a fundamental tool for the development of the archaeology of social phenomena, whose relevant empirical results support its theoretical significance. After conveying its conceptualization in terms of social inequality and relative wealth, the two classes of social conflict are explained: static or structural and dynamic or conjunctural. Finally, connections with the Malthusian demographic law through its two parameters—population and resources—are included. The synthesis of these theoretical frameworks is illustrated with applications to ancient civilizations, including Iberian protohistory, prehispanic Mesoamerica, and early imperial Rome.

  4. Control of a deareador level of a thermoelectric power station using modern control techniques; Control de nivel de un deareador de una central termoelectrica utilizando tecnicas de control moderno

    Energy Technology Data Exchange (ETDEWEB)

    Chavez Estrada, Jose Israel

    1997-01-01

    The present work shows the implementation of the scheme of predictive control IMC (Internal Model Control) in order to control the level of the deareador of a combined cycle thermoelectric power station of (C.C.T.S.). The implementation has the purpose of looking for alternative strategies of control to the classic ones (PID`s) that more efficiently control the variables of interest, in addition to getting into the new control techniques of control. Following the philosophy of predictive control IMC the form to applying this technique is shown, as well as the implementation of this type of controllers. A comparison of predictive control IMC is made with the scheme of conventional control (three control elements PID`s ) used at present to control the level of the deareador in the Combined Cycle Thermoelectric Power stations of Dos Bocas, Veracruz, Mexico and of Gomez Palacio, Durango, Mexico. [Espanol] El presente trabajo muestra la implementacion del esquema de control predictivo IMC (Control con Modelo Interno) con el objeto de controlar el nivel del deareador de una Central Termoelectrica de Ciclo Combinado (C.T.C.C.). La implementacion tiene la finalidad de buscar estrategias de control alternas a las clasicas (PID`s) que controlen mas eficientemente la variable de interes, ademas de incursionar en las nuevas tecnicas de control. Siguiendo la filosofia del control predictivo IMC se muestra la forma de aplicar esta tecnica, asi como la implementacion de este tipo de controladores. Se hace una comparacion del control predictivo IMC con el esquema de control convencional (control de tres elementos PID`s) utilizando actualmente para controlar el nivel del deareador en las centrales termoelectricas de ciclo combinado de Dos Bocas, Veracruz y de Gomez Palacio, Durango en Mexico.

  5. Study of the flooding and dehydration processes of a PEM fuel cell using the EIS technique; Estudio de los procesos de inundacion y deshidratacion en una celda de combustible tipo PEM mediante la tecnica EIS

    Energy Technology Data Exchange (ETDEWEB)

    Loyola-Morales, F.; Cano-Castillo, U. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)]. E-mail: feloyola@yahoo.com.mx

    2009-09-15

    In this work, a study was conducted of the flooding and dehydration processes of a PEM fuel cell using the EIS technique. The experiments were conducted in a 50 cm{sup 2} cell. The gradual flooding of the system was induced by operating the cell at a potential of 0.3 V and maintaining the gas outlet closed (that is, stoichiometry of 1 for the anode (H{sub 2}) and the cathode (O{sub 2})) to enable the water produced by the reaction to accumulate inside. The gradual dehydration was induced by operating the cell at a potential of 0.3V and establishing a oxidized gas flow at a stoichiometry of 4. EIS tests were applied throughout both processes. The results showed that the EIS technique is highly sensitive for the analysis of the different degrees of the flooding processes by monitoring variations in the imaginary components of total impedance (Z{sup )} or the phase angle ({theta}). For low degrees of flooding, the technique had good sensitivity, between 1 and 6 Hz, while at high degrees of flooding the technique's greatest sensitivity was limited to a range between 1 and 2 Hz. In the case of the dehydration process of the system, the results showed that this type of process can be analyzed for variations in the value of the real component (Z{sup '}) as well as for the imaginary component of total impedance and variations in the phase angle. The analysis of dehydration with Z{sup '} was possible at a rather wide range, from 100 to 1000 Hz; with Z{sup }or {theta} it was only possible at a range of 20 to 200 Hz. [Spanish] En el presente trabajo, se llevo a cabo el estudio de los procesos de inundacion y deshidratacion de una celda de combustible tipo PEM mediante la tecnica EIS. Los experimentos fueron realizados en una celda de 50 cm{sup 2}. La inundacion gradual del sistema se indujo operando la celda a un potencial de 0.3 V de celda y manteniendo la salida de gases cerrada (i. e. estequiometria de 1 tanto en anodo (H{sub 2}) como en catodo (O{sub 2

  6. Allevamento massale di Aedes albopictus (Skuse) nell’ambito della tecnica SIT (Tecnica dell’Insetto Sterile)

    OpenAIRE

    Puggioli, Arianna

    2013-01-01

    Dal 1999 presso il laboratorio del Centro Agricoltura Ambiente “G. Nicoli” a Crevalcore (BO) è in corso una sperimentazione finalizzata a verificare la possibilità di attuare la tecnica del maschio sterile (SIT) in Italia contro Aedes albopictus. Alcuni aspetti per migliorare l’efficienza di questa struttura pilota, oggetto della presente ricerca, sono stati: 1) studio degli effetti di determinati costituenti della dieta larvale a) sullo sviluppo larvale stesso, per individuare intervalli lim...

  7. Reidid Venemaale / Jason Bush

    Index Scriptorium Estoniae

    Bush, Jason

    2008-01-01

    Korruptsioonist Venemaal Samara piirkonnas, ettevõtte-vaenulikest ülevõtmiskatsetest ja riigiametnike osast selles, Venemaa presidendi algatusest korruptsiooni väljajuurimisel. Vt. samas Jason Bush. BP rasked ajad Venemaal

  8. La Tecnica del "PL Mapping" per la Caratterizzazione di Materiali Semiconduttori

    OpenAIRE

    Piacentini, Giovanni

    2009-01-01

    La fotoluminescenza (in breve PL) e` una tecnica di analisi ottica non distruttiva, da molti anni largamente impiegata per la caratterizzazione di materiali semiconduttori; generalmente, le misure PL effettuate a basse temperature (2-4 K), permettono di ottenere spettri con picchi stretti e ben definiti, dall'analisi dei quali e` possibile ottenere informazioni sulla struttura a bande del materiale, oltre che su impurezze e difetti eventualmente presenti. Piu` di recente si e` sviluppata un'a...

  9. Ontologias: una tecnica de representacion de conocimiento

    OpenAIRE

    Velásquez Pérez, Torcoroma; Puentes Velásquez, Andrés Mauricio; Guzmán Luna, Jaime Alberto

    2011-01-01

    Se presentan a continuación los aspectos relevantes de la Ingeniería Ontológica como técnica efectiva para la representación de conocimiento. Iniciando con la conceptualización de la web semántica y el papel que juegan las ontologías dentro de la arquitectura de la web semántica; se exploran aspectos de las metodologías de desarrollo de ontologías más utilizadas, así como también, se exponen diversas herramientas requeridas para acceder al conocimiento almacenado en dichas ontologías. Con alg...

  10. Bush and the Energy

    International Nuclear Information System (INIS)

    Facing the increase of the energy demand, Bush the President of the USA, decided to give a new impetus to the nuclear industry. These papers present the economic and the political analysis of this policy from the french point of view showing the anxiety facing the environmental impacts. (A.L.B.)

  11. Analytic techniques to quantify Tetrachlorohydroquinone and Chloranil; Tecnicas analiticas para cuantificar Tetraclorohidroquinona y Cloranilo

    Energy Technology Data Exchange (ETDEWEB)

    Castillo Escobedo, Ma. Teresa; Gutierrez de Gonzalez, Luz Ma; Gojon Zorrilla, Gabriel [Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo Leon (Mexico)

    1995-02-01

    Tetrachlorohydroquinone (TCHQ) was determined by two methods: iodometry and cerimetry. Tritation with aqueous ceric ammonium sulphate using potentiometric end-point detection proved to be the method of choice on account of its coefficient of variation (CV=0.475%) and its excellent accuracy. Chloranil (TCQ) was quantified by titration with aqueous ascorbic acid in acetone-water-hexamethylene tetramine (HMT), the golden-yellow color of the TCQ-HMT complex disappearing at the end point. This method is accurate and has CV=0.396%. [Spanish] Se cuantifico la tetraclorohidroquinona (TCHQ) mediante una tecnica yodometrica y un metodo potenciometrico, basado en el uso de sulfato cerico amoniacal. Se concluyo que el metodo potenciometrico es el mejor, ya que tiene un coeficiente de variacion (CV) de 0.475%, y una exactitud muy aceptable. Se desarrollo un tecnica para cuantificar el Cloranilo (TCQ) por titulacion con Acido Ascorbico en presencia de Hexametilentetramina (HMT) en medio acetona-agua; el punto final se determino por la separacion del color amarillo oro del complejo TCQ-HMT. Esta tecnica presenta un coeficiente de variacion (CV) de 0.396% y una exactitud aceptable. Se realizaron pruebas de hipotesis para verificar la exactitud de los metodos elegidos.

  12. Bush telegraph readings in writing

    CERN Document Server

    Strongman, Luke

    2015-01-01

    A ""bush telegraph"" is an antipodean slang noun phrase for a ""grapevine"" or an informal network of communication. The title of this book on English language use comes from the fact that the book is written from the southern hemisphere (where the idea of a ""bush telegraph"" is more widely-known) and because the concept of a ""bush telegraph"" describes what the book provides - a discussion of salient points in English language use and tertiary teaching across branches of interrelated interests. Each chapter of Bush Telegraph describes aspects of English writing culture. Separately and toget

  13. Diagnosis technique for the detection of mechanical faults in power breakers; Tecnica de diagnostico para la deteccion de fallas mecanicas en interruptores de potencia

    Energy Technology Data Exchange (ETDEWEB)

    Linan, Roberto; Perez, Marciano; Estrada, J. Manuel [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1996-12-31

    This article reports a non-invasive diagnosis technique for the detection of mechanical faults in power breakers, supporting it with the recording and analysis of vibration signals of the equipment under test. Also, an assessment of four breakers using this technique is presented. [Espanol] En el presente articulo se reporta una tecnica de diagnostico no invasiva para detectar fallas mecanicas en interruptores de potencia, apoyandose en el registro y analisis de senales de vibracion del equipo bajo prueba. Asimismo, se presenta la evaluacion de cuatro interruptores usando esta tecnica.

  14. Q&A Steve Bush

    Science.gov (United States)

    Bush, Steve

    2016-08-01

    Steve Bush, curriculum leader for science at Sackville School in West Sussex, was awarded the 2016 RAS Patrick Moore Medal for his contribution to astronomy education. But, as he explains here, it was only chance that led him to astronomy.

  15. 33 CFR 117.547 - Bush River.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Bush River. 117.547 Section 117... OPERATION REGULATIONS Specific Requirements Maryland § 117.547 Bush River. The draw of the Amtrak bridge... Superintendent at 301-291-4278 by an authorized representative of the Bush River Yacht Club by noon on the...

  16. Nuove applicazioni ed evoluzione della tecnica isteroscopica

    OpenAIRE

    Cirillo, Paolo

    2011-01-01

    Primo obiettivo di questo studio è stato confrontare l’isteroscopia con “approccio vaginoscopico” con quella con “approccio tradizionale” (con speculum ed eventuale tenaculum) in termini di score di dolore e tempo di procedura al fine di poter: favorire la diffusione di questa tecnica.L'attività di ricerca è stata poi rivolta allo studio di un interrogativo legato alla presenza di fibre nervose a livello endometriale:Ruolo delle fibre nervose nella patogenesi del dolore durante isteroscopia a...

  17. Radionuclide analysis of bush food

    International Nuclear Information System (INIS)

    A model diet for an Aboriginal adult living entirely on bush foods collected from the Alligator Rivers Region of the Northern Territory has been established. Results of investigations of the specific activities of thorium-230, radium-226, lead-210 and polonium-210 in 123 samples of bush foods collected by Ranger Uranium Mines Pty Ltd during pre-production and production periods are presented. For all the investigated bush food items, excluding freshwater mussels (Velesunio angasi), no systematic differences were found between the specific activities of the radionuclides monitored in food items sampled during preproduction and production periods. Preliminary estimates of annual effective dose equivalent (DE) rates for stochastic effects on an adult living entirely on the model bush diet are presented. Of the four radionuclides monitored the major contributor to the effective DE rates appears to be lead-210 followed by radium-226. Among the selected nine components of the diet the major contributor to the effective DE rates appear to be mussels, water lilies and fish

  18. El espacio abierto: una tecnica didactica facilitadora del desarrollo de competencias generales en la formacion profesional superior The open space: a facilitating didactic technique in the development of genereral competences in higher education

    Directory of Open Access Journals (Sweden)

    Alejandro Villalobos Claveria

    2009-11-01

    Full Text Available El propósito principal del presente artículo es demostrar que el Espacio Abierto (Open Space como técnica investigativa puede ser un adecuado procedimiento didáctico para el desarrollo de competencias genéricas (transversales en la formación profesional superior. Para alcanzar dicho propósito, en primer lugar, se describe el Espacio Abierto como la técnica investigativa y la información requerida para su aplicación. En segundo lugar, se presenta una propuesta de aplicación ya validada con un conjunto de académicos de dos universidades regionales, para su eventual utilización en las aulas universitarias. El presente trabajo se centra en los resultados preliminares del proyecto Fondecyt Nº 1070466: "La construcción del sujeto docente universitario en universidades regionales: Factores claves en su desempeño académico y profesional", financiado por el gobierno de Chile, en la línea Conicyt/Fondecyt. Estudio que pretende caracterizar factores claves que definen la profesión docente universitaria en instituciones de enseñanza superior regionales para el diseño de una propuesta de perfeccionamiento de académicos e investigadores en docencia superior.The main goal of this article is to demonstrate that the Open Space as a research technique can be a suitable didactic procedure for the development of general competences (cross-sectional in higher education. In order to reach this goal, we begin by describing the Open Space as a research technique as well as the information required for its application. Secondly, an application proposal is presented, which has been previously validated by a group of professors from two regional universities. This proposal is intended to be used in university classrooms when possible. This study focuses on the preliminary results of Fondecyt Project Nº 1070466: "The education of the university professor in regional universities: Key factors in their academic and professional performance", financed

  19. Technical analysis and economic effect of an industrial initiative in the photovoltaic sector; Effetto dell' analisi tecnica ed economica di una iniziativa industriale nel settore dell'energia fotovoltaica

    Energy Technology Data Exchange (ETDEWEB)

    Ciorba, U.; Pauli, F. [ENEA, Funzione Centrale Studi, Centro Ricerche Casaccia, Rome (Italy); Menna, P. [ENEA, Funzione Centrale Studi, Centro Ricerche Portici, Naples (Italy)

    2001-07-01

    interdipendenze economiche, valutiamo l'impatto sul sistema produttivo di una domanda finale di moduli fotovoltaici per complessivi 5 MW p di potenza. Tale domanda, che corrisponde a una spesa di 16.3 milioni di euro, attiva (direttamente e indirettamente) un incremento di produzione pari a 57.6 milioni di euro, quando le celle sono prodotte in Marocco. Nell'ipotesi che le celle siano importate, invece, l'incremento di produzione e' di 22.3 milioni di euro. L'impatto sull'occupazione, in termini di creazione di posti di lavoro, ammonta a 2570 unita' nel primo caso e 489 nel secondo. La ricaduta produttiva e occupazionale della domanda di moduli dipende fortemente dalla disponibilita' dei beni intermedi a livello locale.

  20. Retrograde cystography US. A new ultrasound technique for the diagnosis and staging of vesicoureteral reflux; L'ecocistografia retrogada: una nuova tecnica ecografica per la diagnosi e stadiazione del reflusso vescico-ureterale

    Energy Technology Data Exchange (ETDEWEB)

    Farina, R.; Arena, C.; Pennisi, F.; Di Benedetto, V.; Politi, G.; Di Benedetto, A. [Catania Univ., Catania (Italy). Ist. di radiologia

    1999-05-01

    The authors investigated the accuracy of a new US (ultrasound) investigation technique, called retrograde cystography US, in the early diagnosis and staging of vesicoureteral reflux. 5 patients, aged 3 months to 10 years, suffering from hydronephrosis and/or pyelonephritis, were examined using retrograde cystography US followed by conventional retrograde cystography. Retrograde cystography US consists in the transcatheter introduction of a contrast agent into the bladder and a subsequent color Doppler examination to show or exclude the presence of reflux. Superpubic scanning of bladder, ureters and pyelocaliceal cavity was performed after echo contrast agent introduction to assess the reflux grade. US was performed with an Esaote AU 590 asynchronous scanner with a 3.5 MHz convex probe. The total agreement of conventional and US findings seems to confirm the importance of the US method for the diagnosis and staging of vesicoureteral reflux. [Italian] Sono stati reclutati 5 pazienti con eta' compresa fra 3 mesi e 10 anni affetti da idrofrenosi e/o pielofrenite, per valutare l'accuratezza di una nuova metodica d'indagine, l'ecocistografia retrograda nella diagnosi e stadiazione del reflusso vescico-ureterale. E' stata eseguita ecocistigrafia retrograda e successivamente cistografia retrograda di controllo. L'ecocistografia retrograda consiste nell'introduzione trans-catetere di un mezzo di contrasto Levovist nella vescia e successivamente controllo con eco color Doppler per evidenziare o escludere la presenza del reflusso. Le indagini ecografiche sono state condotte con un apparecchio AU 590 Asyncronus con sonda convex da 3.5 MHz. La piena sovrapponobilita' dei dati emersi con l'ecocistografia con quelli della cistografia retrograda ne sembra confrmare il ruolo importante nella diagnosi e stadiazione del reflusso vescico-ureterale.

  1. Necessary Policy Changes in Bush's "Diplomatic Revolution"

    Institute of Scientific and Technical Information of China (English)

    Pang Zhongying

    2004-01-01

    @@ How exactly to see America's foreign policy of Bush's second term? To put it briefly, on the issues scholars of America and other countries including China can roughly divided into two schools, they are respectively "continue or constant school" and "change or adjust school." The former believes that Bush's win in the general election means a victory of conservatism. In his second term, President Bush will not change the general direction of his tough foreign policy.

  2. Cadmium in jamaican bush teas.

    Science.gov (United States)

    Hoo Fung, L A; Rattray, V R; Lalor, G C

    2014-01-01

    Samples of Jamaican plants used as bush teas were collected from households in high soil-cadmium (Cd) areas of central Jamaica and analysed by graphite furnace atomic absorption spectrophotometry for total cadmium and for cadmium extractable with a hot water brew as prepared for human consumption to determine their contribution to dietary cadmium exposure. The concentrations ranged from < 0.03 to 6.85 µg/g for total Cd, between 1 and 15% of which was extracted with a hot water brew. One cup (200 ml) of the teas examined was found to contain < 0.04-1.18 µg of Cd and would contribute 0.1-0.3 µg of Cd to a person's dietary intake. This is significantly below the provisional tolerable weekly intake (PTWI) of 7 µg Cd/kg body weight established by the World Health Organization (WHO). While this suggests that bush tea consumption does not contribute significantly to the PTWI, some of the teas examined exceed the WHO recommendation of less than 0.3 mg/kg Cd for medicinal plants. PMID:25303189

  3. Analysis methodology for economic technical feasibility studies in offshore electrical generation systems; Metodologia de analisis para estudios de factibilidad tecnica economica en sistemas de generacion electrica costa fuera

    Energy Technology Data Exchange (ETDEWEB)

    Fiscal Escalante, Raul [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2007-07-01

    An analysis methodology followed in the development of technique-economic feasibility studies of systems of electrical generation in offshore electrical installations is presented, including the obtaining of the curves of the turbine and generator performance, the technical considerations for the formulation of the operation scenes and the calculations of the economic evaluation of a real scenario. [Spanish] Se muestra una metodologia de analisis seguida en el desarrollo de estudios de factibilidad tecnica-economica de sistemas de generacion electrica en instalaciones electricas costa fuera, incluyendo la obtencion de las curvas de comportamiento de la turbina y el generador, las consideraciones tecnicas para la formulacion de los escenarios de operacion y los calculos de la evaluacion economica de un escenario real.

  4. Vannevar Bush: Fifty Years Later

    Science.gov (United States)

    Lagowski, J. J.

    1995-12-01

    It is ironic that the 50th anniversary year of Vannevar Bush's Report to President Truman entitled "Science the Endless Frontier", which put into motion the eminently successful current system of education of scientists in this country occurs at a time when serious questions are being asked about the usefulness of that very system. Bush viewed his proposal to establish a national research foundation (later to be called the National Science Foundation) as a "social compact." Judgment of scientific merit would be delegated to expert peers in return for scientific progress, which would ultimately benefit the nation in terms of scientific needs--military security, economic productivity, and enhanced quality of life. Bush wanted the funding of basic research intertwined with training, and preferred to use universities for this purpose rather than industrial or national labs. Bush viewed college and university scientists as teachers and investigators. He believed university-based research would uniquely encourage and engage the next generation of scientists as no other institutional arrangement could. Bush did not trust industry's commitment to basic research, an instinct that proved prophetic. The academic reserve of scientists (PhD's in training and postdoctoral students) that existed before World War II, and upon which the United States could draw for its needs, which were primarily associated with defense efforts, was probably one of the defining factors in Bush's suggested strategy. Currently, that reserve of talent has gotten so large that it is the obvious throttle in the pipeline slowing the continued development of the university research enterprise. Since 1977, the rate at which we have trained new scientists exceeds an average of 4% annually. Since 1987, the "science work force"--PhD's--has grown at three times the rate of the general labor supply. Temporary positions for postdoctoral scientists have grown even faster (over 5% per year since 1989). To compound

  5. Faculty Activity Analysis in the Universidad Tecnica Del Estado Campuses.

    Science.gov (United States)

    Karadima, Oscar

    An analysis of academic activities of college faculty at the eight campuses of Chile's Universidad Tecnica del Estado was conducted. Activities were grouped into seven categories: direct teaching, indirect teaching, research, community services, faculty development, academic administration, and other activities. Following the narrative…

  6. Bush favours research at Pentagon and NIH

    CERN Multimedia

    MacIlwain, C

    2001-01-01

    The first budget from George W. Bush increases funding for military research and the NIH, while environmental work is drastically cut. The rest of civilian science funding is essentially frozen (1 page).

  7. The Cadarache 1 MV porcelain SINGAP bushing

    International Nuclear Information System (INIS)

    The 1 MV bushing is considered as one of the most technically challenging components of the ITER neutral beam injectors, necessitating the design and manufacture of large ceramic insulators beyond the range of current industrial production. The ITER radiation environment and the fact that the bushing forms part of the tritium barrier demand a component of great reliability and safety. An R and D task has been launched for the fabrication of a prototype bushing based on the SINgle GAP, SINGle APerture (SINGAP) 1 MeV accelerator being developed in the EU. We present the design of this prototype, which is to be tested at Cadarache, and compare it with the SINGAP bushing proposed for the ITER injectors

  8. Contact dermatitis from Larrea (creosote bush).

    Science.gov (United States)

    Leonforte, J F

    1986-02-01

    Six men suffering from acute dermatitis had positive patch tests to Larrea (creosote bush). The lesions preferentially involved sun-exposed sites, simulating a photodermatitis, but also were on the legs and scrotum. Our findings were more consistent with contact allergy than with a primary irritant or a phototoxic response. The patch tests were also positive to Zuccagnia punctata. In two cases the exposure to the creosote bush occurred as a result of casual occupations, in two because of household remedies (moist compresses and baths), and in the other two as a result of burning the bush and resorting to household remedies. Attention should be drawn to this contact dermatitis because the creosote bush grows abundantly all over the American continent. PMID:3950120

  9. DESIGN OF A BUSH PRESSING MACHINE FOR PUMPS

    Directory of Open Access Journals (Sweden)

    AMITH KALEKAR

    2015-03-01

    Full Text Available Bearings are among the most important components in the vast majority of machines. Bush is an independent plain bearing that is inserted into a housing to provide a bearing surface for rotary applications. Bushes are fitted either by pressing for less interference or by heating the frame or cooling the bushes using dry ice or liquid nitrogen. In the present case, due to uneven cooling using liquid nitrogen or other problems, bush is not fitting easily in some of the pump frames. So there is a need of a bush pressing machine. A ‘C’ frame type hydraulic bush pressing machine is designed in this work.

  10. Electrical bushing for a superconductor element

    Science.gov (United States)

    Mirebeau, Pierre; Lallouet, Nicolas; Delplace, Sebastien; Lapierre, Regis

    2010-05-04

    The invention relates to an electrical bushing serving to make a connection at ambient temperature to a superconductor element situated in an enclosure at cryogenic temperature. The electrical bushing passes successively through an enclosure at intermediate temperature between ambient temperature and cryogenic temperature, and an enclosure at ambient temperature, and it comprises a central electrical conductor surrounded by an electrically insulating sheath. According to the invention, an electrically conductive screen connected to ground potential surrounds the insulating sheath over a section that extends from the end of the bushing that is in contact with the enclosure at cryogenic temperature at least as far as the junction between the enclosure at intermediate temperature and the enclosure at ambient temperature. The invention is more particularly applicable to making a connection to a superconductor cable.

  11. Bush's Second-term Foreign Strategy

    Institute of Scientific and Technical Information of China (English)

    Task Force on U.S. Foreign Strategic Review

    2006-01-01

    @@ In 2005, the first year of Bush's second term, the U.S. global strategy entered a new era of adjustment and intensification after four years' practice. As Bush won his reelection with an overwhelming advantage, he was so ambitious that his mind was preoccupied with desire of leaving political and diplomatic heritage to the future. However, a series of challenges and problems popped up and forced him to adapt his foreign strategy to the rapidly changing domestic and international environment. His foreign strategy, ranging from its priorities, means to style, has experienced changes with stronger conservative and realistic flavor.

  12. George W. Bush in Political Time: The Janus Presidency

    NARCIS (Netherlands)

    Magliocca, G.N.

    2009-01-01

    This essay places George W. Bush's presidency and the Bush administration in some historical context by applying the model of “political time” developed in recent books by Stephen Skowronek (2008) and Keith Whittington (2007). My thesis is that Bush's political failure during his second term was lar

  13. Everything You Know About the Bush Environmental Record is Wrong

    OpenAIRE

    Easterbrook, Gregg

    2002-01-01

    Conventional wisdom says that George W. Bush has 'declared war on the environment.' Yet actual instances of Bush anti-environmental policies are few, while the new president has received no credit for significant actions to reduce air pollution. What's the political and media dynamic that makes everyone feel so sure that Bush is anti-environment?

  14. Environmental Assessment Colonial Seabird Management on Two Bush Island and Little Two Bush Island, Maine

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This is an environmental assessment that discussed and analyzes the proposed restoration of historical nesting populations of Common and Roseate terns on Two Bush...

  15. Evaluating the Bush Climate Change Initiative

    NARCIS (Netherlands)

    Moor APG de; Berk MM; Elzen MGJ den; Vuuren DP van; MNV

    2002-01-01

    This report evaluates the Climate Change Initiative as presented by President Bush on February 14, 2002. The President's proposal aims to reduce the greenhouse gas intensity of the US economy by 18 per cent between 2002 and 2012. This policy target can be regarded as being very modest, when compared

  16. Evaluating the Bush Climate Change Initiative

    NARCIS (Netherlands)

    Moor APG de; Berk MM; Elzen MGJ den; Vuuren DP van; MNV

    2002-01-01

    Deze rapportage evalueert het Climate Change Initiative dat President Bush op 14 februari 2002 heeft gepresenteerd. Dit Initiatief beoogt de broeikasgasintensiteit van de Amerikaanse economie tussen 2002 en 2012 met 18 procent te verminderen. Deze beleidsambitie valt als zeer bescheiden te typer

  17. Bush skazal ne sovsem to, tshto skazal

    Index Scriptorium Estoniae

    2006-01-01

    USA abivälisminister Euroopa ja Euraasia küsimustes Daniel Fried teatas, et NATO riigid toetavad Gruusia, Moldova ja Aserbaidžaani territoriaalset terviklikkust, kuid ei luba neil seda taastada relva abil. Abiminister selgitab, mida pidas USA president George W. Bush silmas, kui ta avaldas Riia tippkohtumisel toetust Gruusiale tema püüdlustes liituda NATO-ga

  18. Bush criticism on Kyoto cuts ice

    International Nuclear Information System (INIS)

    According to the authors the president of the USA, George W. Bush, has some relevant objections to the Kyoto Protocol. Some of the short-comings of the Protocol are discussed and recommendations are made for the best strategy of the European Union to 're-involve' the US in the Kyoto Protocol. 8 refs

  19. Ion nitriding post-oxidation as an alternative technique to electrolytic chromium; Nitruracion post-oxidacion ionica como tecnica alternativa al cromado electrolitico

    Energy Technology Data Exchange (ETDEWEB)

    Diaz-Guillen, J. C.; Granda-Gutierrez, E.E.; Campa-Castilla, A.; Perez-Aguilar, S.I.; Garza-Gomez, A.; Candelas-Ramirez, J.; Mendez-Mendez, R. [COMIMSA. Corporacion Mexicana de Investigacion en Materiales S.A. de C.V., Saltillo, Coahuila (Mexico)]. E-mail: jcarlos@comimsa.com

    2010-11-15

    The effect of temperature and processing time during post-oxidation on hardness and corrosion resistance of AISI 1045 samples treated through nitriding and post-oxidation in a pulsed plasma discharge is evaluated in this paper. Also, a comparative analysis of the mechanical properties obtained with the dual nitriding - post oxidation process versus those properties of typical hard chrome coatings was performed with an aim to propose an alternative technique to the processes of galvanic coatings. The latter revealed that the process of ion nitriding and post-oxidation provides similar properties in hardness and improves the corrosion resistance compared to the hard chrome case. It is conclude that the technique of ion nitriding and post-oxidation is a non environmental harmful technology with strong potential to replace highly polluting electroplating techniques for application of hard chrome coatings. [Spanish] En el presente trabajo se evalua el efecto del tiempo y la temperatura de post-oxidacion sobre las propiedades de dureza y resistencia a la corrosion de muestras de acero AISI 1045 sometido al proceso de nitruracion post-oxidacion ionica en plasmas pulsados. Asi mismo, con el objetivo de fundamentar la propuesta de utilizacion de la nitruracion post-oxidacion ionica como una tecnica alternativa a los procesos galvanicos para aplicacion de recubrimientos de cromo duro, se realizo un analisis comparativo de propiedades, evidenciando que, mediante el proceso nitruracion postoxidacion ionica, es posible obtener caracteristicas similares en dureza y mejores en resistencia a la corrosion que las tipicas obtenidas para el cromo duro. Los resultados obtenidos permiten postular una tecnica que no dana al medio ambiente, como lo es la nitruracion post-oxidacion ionica, como candidata potencial para sustituir las tecnicas galvanicas altamente contaminantes para aplicacion de cromo duro.

  20. Waterloo or Milestone of the Bush Administration

    Institute of Scientific and Technical Information of China (English)

    YangHongxi; ChenKaiming; WangWei

    2005-01-01

    In the coming four years, the Middle East will continue to be the strategic focus of the United States. It can be seen in an analysis of the recent years's ituation that the Bush administration rather chose a war in the Middle East to achieve its strategic goals than used non-military measures to do the same thing. In the future the Bush administration might find it difficult to draw back from its policy on the Middle East, which will mean more losses than gains. This will probably continue to cause damage to both the soft and hard power of the U.S., and result in a downward trend of the U.S. power for a certain period of time.

  1. Analysis of Partial Discharge in OIP Bushing Models

    OpenAIRE

    Ahmed, Zeeshan

    2011-01-01

    A high voltage bushing is a very important accessory of power transformers. Bushings are used to insulate high voltage conductors where they feed through steel tank of a power transformer. There are different sources of electric stress that may result in degradation of bushing. Partial discharges (PDs) are one of the main sources of electrical degradation. PDs occur due to defects in electrical insulations, and can lead to insulation failure. This thesis is composed of two parts. The first pa...

  2. Soil microbial communities following bush removal in a Namibian savanna

    Science.gov (United States)

    Buyer, Jeffrey S.; Schmidt-Küntzel, Anne; Nghikembua, Matti; Maul, Jude E.; Marker, Laurie

    2016-03-01

    Savanna ecosystems are subject to desertification and bush encroachment, which reduce the carrying capacity for wildlife and livestock. Bush thinning is a management approach that can, at least temporarily, restore grasslands and raise the grazing value of the land. In this study we examined the soil microbial communities under bush and grass in Namibia. We analyzed the soil through a chronosequence where bush was thinned at 9, 5, or 3 years before sampling. Soil microbial biomass, the biomass of specific taxonomic groups, and overall microbial community structure was determined by phospholipid fatty acid analysis, while the community structure of Bacteria, Archaea, and fungi was determined by multiplex terminal restriction fragment length polymorphism analysis. Soil under bush had higher pH, C, N, and microbial biomass than under grass, and the microbial community structure was also altered under bush compared to grass. A major disturbance to the ecosystem, bush thinning, resulted in an altered microbial community structure compared to control plots, but the magnitude of this perturbation gradually declined with time. Community structure was primarily driven by pH, C, and N, while vegetation type, bush thinning, and time since bush thinning were of secondary importance.

  3. Remarks by president Bush and president Ilves, June 24, 2007 / George W. Bush, Toomas Hendrik Ilves

    Index Scriptorium Estoniae

    Bush, George W., 1946-

    2007-01-01

    Ameerika Ühendriikide president George W. Bush ja Eesti president Toomas Hendrik Ilves annavad lühiülevaateValge Maja ovaalkabinetis peetud kõnelusest, mille põhiteemadeks olid olukord Afganistanis ja Iraagis, viisavabadus ning küberrünnakud. Vabariigi President töövisiidil Ameerika Ühendriikides 25.-26.06.2007

  4. Trend in Bush's China Strategy Adjustment

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ Since the beginning of the year, a debate has been set off on China's rise and China Threat theory is prevailing again in America. Under this background, U.S. Deputy Secretary of State Zoellick delivered a speech on September 21 entitled "Whither China: From Membership to Responsibility?" which systematically elaborated U.S. strategy on China. ① Before and after this speech, many other U.S. politicians and scholars have similar views. This article aims to analyze these relevant expositions in order to explain Bush's China strategy adjustments.

  5. Injection molding of bushes made of tribological PEEK composites

    Directory of Open Access Journals (Sweden)

    2007-12-01

    Full Text Available Polyetheretherketone (PEEK composites have been extensively studied because of the excellent tribological behavior among plastics. However, laboratory specimens and tests are generally discussed, whereas application studies on industrial components are infrequent. In this paper, an injection molded bush made of tribological PEEK was analyzed to correlate wear behavior and molded material structure. Bushes were tested under unlubricated sliding conditions by means of a short wear test. Surface analysis, differential scanning calorimetry (DSC and optical microscopy were used to evaluate the distribution of the different composite fillers (polytetrafluoroethylene, PTFE, graphite particles and carbon microfibers and their effect on the final bush behavior. A significant lack of homogeneity was observed in the molded bush and black bands appeared on the shaft surface after testing due to the sliding. The bush geometry and the injection molding process should be optimized to allow the best tribological behavior of the molded material under working conditions.

  6. Suppression of indigo bush with pod pests

    Directory of Open Access Journals (Sweden)

    Gagić-Serdar Renata

    2013-01-01

    Full Text Available The recorded seed predators of Amorpha fruticosa L., indigo bush weevils and pteromalid wasps, were the subject of laboratory and field research studies in the period from 2006 to 2011. Sample analyses were carried out on more than 30 localities in Serbia with the aim of measuring the summarized pre-dispersal and post dispersal predation preferences. The percentages of the total pre-dispersal (max≈33% and post-dispersal re-infested material (over 95%, make these insects serious candidates for host-plant suppression. Their bionomics were monitored through continuous collection, dessection and observation of infested seeds, in correlation with environmental parameters, especially water-level fluctuations in endangered forests. [Projekat Ministarstva nauke Republike Srbije, br. TP-31070: The development of technological methods in forestry in order to attain optimal forest cover

  7. Study on the insulation of HTS bushing at cryogenic temperature

    Energy Technology Data Exchange (ETDEWEB)

    Kim, W. J.; Kim, S. H. [Dept. of Electrical Engineering, Gyeongsang National University and ERI, Jinju (Korea, Republic of); Shin, H. S. [Dept. of Mechanical Design Engineering, Andong National University, Andong (Korea, Republic of); Park, T. S. [Dept. of Aviation Mechatronics, Korea Aviation Polytechnic College, Sacheon (Korea, Republic of)

    2013-09-15

    In the development of high temperature superconducting (HTS) power machines, HTS bushing is one of core technologies. In particular, the insulation body with sheds and electrical insulation at cryogenic temperature have attracted a great deal of interest from the view point of the size, weight and efficiency of bushing. In this study, the electrical and mechanical characteristics of various insulators for body in liquid nitrogen (LN{sub 2}) were investigated. And the surface discharge distance, collar length of GFRP sheds were studied. To emit bubbles between sheds, the shape and arrangement of shed were studied. The shed structure for 60 kV class HTS bushing were designed with regular arrangement.

  8. Bush asub uue Iraagi-poliitikaga vigu parandama / Kaivo Kopli

    Index Scriptorium Estoniae

    Kopli, Kaivo

    2007-01-01

    USA president George W. Bush tutvustas uut Iraagi-strateegiat. Iraaki saadetakse paarkümmend tuhat USA sõdurit, küsitluse andmeil on 61% ameeriklastest lisasõdurite saatmise vastu. Lisa: USA plaanid Iraagis ja Iraagiga

  9. Insulation Characteristics of Bushing Shed at Cryogenic Temperature

    Science.gov (United States)

    Kim, W. J.; Kim, Y. J.; Kim, S. H.

    2014-05-01

    In the development of high-Tc superconducting(HTS) devices, the bushing for HTS devices (HTS bushing) is the core technology, the need to because of supply high voltage to the cable or the winding of the transformer. The lower part of the bushing is exposed to the liquid nitrogen (LN2), and it has many sheds. In particular, the insulation body with sheds and electrical insulation at cryogenic temperature have attracted a great deal of interest from the view point of the size, weight and efficiency of bushing. This study has mainly investigated the shed and insulation body by comparing glass fiber reinforced plastics (GFRP) in LN2. We investigated the surface discharge characteristics according to insulating materials, width and height of the shed.

  10. Insulation characteristics of bushing shed at cryogenic temperature

    International Nuclear Information System (INIS)

    In the development of high-Tc superconducting(HTS) devices, the bushing for HTS devices (HTS bushing) is the core technology, the need to because of supply high voltage to the cable or the winding of the transformer. The lower part of the bushing is exposed to the liquid nitrogen (LN2), and it has many sheds. In particular, the insulation body with sheds and electrical insulation at cryogenic temperature have attracted a great deal of interest from the view point of the size, weight and efficiency of bushing. This study has mainly investigated the shed and insulation body by comparing glass fiber reinforced plastics (GFRP) in LN2. We investigated the surface discharge characteristics according to insulating materials, width and height of the shed.

  11. Baltic leaders jockey with Bush to get their message across

    Index Scriptorium Estoniae

    2005-01-01

    USA president George Bush lubas pärast kõnelemist Mart Laari ning Vaira Vike-Freibergaga arutada kohtumisel president Vladimir Putiniga suhteid Venemaa ja Balti riikide vahel. Lisa: Vladimir Putini arvamus Molotovi-Ribbentropi pakti kohta

  12. Bush võitleb tugeva presidendi maine nimel / Neeme Raud

    Index Scriptorium Estoniae

    Raud, Neeme, 1969-

    2007-01-01

    Ilmunud ka: Postimees : na russkom jazõke, 13. juuni 2007, lk. 5. USA president George W. Bush pidi sekkuma immigratsioonireformi debatti. Vt. samas: Malta ja Rootsi nõuavad sisserändajate jagamist

  13. Insulation design of cryogenic bushing for superconducting electric power applications

    International Nuclear Information System (INIS)

    Highlights: ► In this paper, design factors of cryogenic bushings were discussed and test results of specimen were introduced in detail. ► We focused on the comparative study of breakdown characteristics of different electrode materials. ► Puncture and creepage breakdown characteristics were analyzed based on the withstand voltage. ► We obtained the basic design factors of extra high voltage condenser bushing. ► We obtained the basic design factors of extra high voltage condenser bushing, which could be used in cryogenic environment. -- Abstract: Recently, the superconductivity projects to develop commercial superconducting devices for extra high voltage transmission lines have been undergoing in many countries. One of the critical components to be developed for high voltage superconducting devices, including superconducting transformers, cables, and fault current limiters, is a high voltage bushing, to supply high current to devices without insulating difficulties, that is designed for cryogenic environments. Unfortunately, suitable bushings for HTS equipment were not fully developed for some cryogenic insulation issues. Such high voltage bushings would need to provide electrical insulation capabilities from room temperature to cryogenic temperatures. In this paper, design factors of cryogenic bushings were discussed and test results of specimen were introduced in detail. First, the dielectric strength of three kinds of metals has been measured with uniform and non-uniform electrodes by withstand voltage of impulse and AC breakdown test in LN2. Second, puncture breakdown voltage of glass fiber reinforced plastics (GFRPs) plates has been analyzed with non-uniform electrodes. Finally, creepage discharge voltages were measured according to the configuration of non-uniform and uniform electrode on the FRP plate. From the test results, we obtained the basic design factors of extra high voltage condenser bushing, which could be used in cryogenic environment

  14. Bush jätkab maailma dirigeerimist / Neeme Raud

    Index Scriptorium Estoniae

    Raud, Neeme, 1969-

    2004-01-01

    USA president George W. Bush peab oma tagasivalimise kindlustajaks elluviidud välispoliitikat. Autori hinnangul on Bush varasematest presidentidest jõulisemalt muutmas USA-d kapitalismi lipulaevaks, Bushi USA vastandab end euroopalikule mudelile, kus riik tagab kodanikele turvatunde. Kavandatavatest muudatustest USA sisepoliitikas. Vt. samas: Arko Olesk. Verine aasta Iraagi sõjas; Aivar Reinap. USA majandus mustas augus; Andres Keil. Tsivilisatsiooni häirekell

  15. The Bush administration climate proposal: rhetoric and reality

    Energy Technology Data Exchange (ETDEWEB)

    Blanchard, O.

    2003-03-01

    This paper examines the Bush administration proposal and subsequent actions in terms of the United Nations Framework Convention on Climate Change (UNFCCC). It has four sections. Section one describes the main features of the Bush Administration climate proposal. Section 2 identifies the main underlying factors that shape this proposal. Section 3 rebuts the Administration critique in deciding to reject the Kyoto protocol. Section 4 explores the prospects of the US climate mitigation actions over the next few years. (A.L.B.)

  16. Hybrid neural network bushing model for vehicle dynamics simulation

    International Nuclear Information System (INIS)

    Although the linear model was widely used for the bushing model in vehicle suspension systems, it could not express the nonlinear characteristics of bushing in terms of the amplitude and the frequency. An artificial neural network model was suggested to consider the hysteretic responses of bushings. This model, however, often diverges due to the uncertainties of the neural network under the unexpected excitation inputs. In this paper, a hybrid neural network bushing model combining linear and neural network is suggested. A linear model was employed to represent linear stiffness and damping effects, and the artificial neural network algorithm was adopted to take into account the hysteretic responses. A rubber test was performed to capture bushing characteristics, where sine excitation with different frequencies and amplitudes is applied. Random test results were used to update the weighting factors of the neural network model. It is proven that the proposed model has more robust characteristics than a simple neural network model under step excitation input. A full car simulation was carried out to verify the proposed bushing models. It was shown that the hybrid model results are almost identical to the linear model under several maneuvers

  17. Oversimplifying Iraq's challenges: Bush's Fort Bragg speech and americans' declining support for the war

    Directory of Open Access Journals (Sweden)

    Carlos L. Yordan

    2009-11-01

    Full Text Available Este artículo examina el porqué el presidente George W. Bush no pudo recolectar la ayuda de la ciudadanía americana para su estrategia para la estabilización y la transformación de Iraq. De hecho, esta estrategia ha sido afectada por el desplegar de los acontecimientos que sucedieron en Iraq, pero el problema principal reside en las posiciones que el presidente utilizó para simplificar los desafíos que el ejército americano y la diplomacia tenían que hacer frente en Iraq, buscando la aprobación de las criticas periodisticas, de los expertos gubernamentales y de los juristas. En más de una perspectiva la falta de aprobación del gobierno Bush en Iraq es una consecuencia de la carencia de la confianza que la opinión pública tuvo por su presidente y sus consejeros para lograr sus objetivos en Iraq. Para constatar esta tesis, el artículo analiza el discurso del presidente a la nación, difundida en horario de punta el 28 de julio de 2005, que demuestra que los americanos no estaban demasiado convencidos de la estrategia de Bush._____________ABSTRACT:This article puts in context why President of the United States of America George W. Bush has been unable to rally American support for his strategy to stabilize and transform Iraq. Since the summer of 2003, when Iraqis started to challenge the authority of the Anglo-American occupation, the White House has been on the defensive, while American support for post-war efforts has dwindled. While developments in Iraq have affected the strategy’s execution, the main problem is the president’s inclination to oversimplify the challenges American troops and diplomats are facing in Iraq, inviting criticism from journalists, experts on nation-building and lawmakers. In many ways, declining approval of Bush’s handling of Iraq results in the public’s lack of confidence that the president and his advisors will be able to accomplish its goals in Iraq. To test this argument, the article analyzes

  18. L’uso della traduzione in una classe di LS: Una questione ancora aperta o da riaprire?

    Directory of Open Access Journals (Sweden)

    Sergio Romanelli

    2009-07-01

    Full Text Available Con l'avvento dell'Approccio Comunicativo, sorto negli anni '80 del secolo scorso, la questione dell'uso della traduzione in una classe di lingua straniera (LS è scivolata verso le zone periferiche del dibattito linguistico. I manuali di Glottodidattica hanno ignorato a lungo la questione come se fosse un problema già risolto. Con questo articolo si intende riaprire la discussione analizzando i motivi non solo linguistici, ma anche ideologici e politici, di tale esclusione e rivalutare i vantaggi di questa tecnica didattica. Si comincerà illustrando come i vari approcci all'insegnamento delle lingue straniere abbiano considerato la traduzione dalla metà del diciassettesimo secolo fino ai giorni nostri. Si vedrà come, nonostante la traduzione abbia perso progressivamente il suo ruolo di tecnica efficace all'insegnamento/apprendimento di una LS, è però abbastanza comune vedere professori che usano la lingua materna (LM e studenti che si avvicinano alla LS mediante l‘uso della traduzione. Si concluderà quest'analisi suggerendo una serie di possibili attività didattiche che prevedano l'uso la traduzione in una classe di LS.

  19. Sacrifice, the Bush Way: From Self to Others.

    Science.gov (United States)

    Cotton, Marc-Andre

    2016-01-01

    The Walker Bush dynasty has marked the last American century, promoting "corporate democracy" as a means to expand its wealth. As 43rd President of the United States, George Walker Bush's biography illustrates how the members of our powerful elite sacrifice the inner self of their own children for the sake of political success. In his case, the childrearing violence and emotional neglect he experienced created the psychological basis for his later re-enactments as commander-in-chief in the wake of 9/11. From that standpoint, his intergenerational legacy of trauma bears strong affinities with that of the nation as a whole. This paper examines George W. Bush's paternal inheritance, the problem of maternal abuse and its subsequent psychic wounds, as well as the impact of an unresolved grief after the loss of his younger sister, Robin. Restaging childhood traumas as a vengeful young adult at Yale, before getting involved in dirty politics, Bush supported unlawful hazing practices. Then, as Governor of Texas he promoted the death penalty and a zero-tolerance approach to juvenile offenders. Controversial decisions of the Bush administration regarding the Enhanced Interrogation Program, the Guantanamo Bay detention camp and many others are further scrutinized as collective re-enactments of abuse deeply engrained in American society. PMID:27480013

  20. Laser induced spectroscopy breakdown (LIBS) application to heavy metal detection in soils; Applicazioni della tecnica Laser induced breakdown spectroscopy (LIBS) alla determinazione dei metalli pesanti nei suoli

    Energy Technology Data Exchange (ETDEWEB)

    Barbini, R.; Fantoni, R.; Palucci, A.; Ribezzo, S.; Colao, F. [ENEA, Centro Ricerche Frascati, Frascati, RM (Italy). Div. Fisica Applicata; Capitelli, F. [Bari, Univ., Bari (Italy). Dipt. di Biologia e Chimica Agroforestale ed Ambientale

    2000-07-01

    and the sample upon which the analytic use of LIBS technique relays. RSD % (Relative Standard Deviation) for LIBS and ICP data have been compared. LIBS values appeared systematically higher than the ICP ones. Also the correlation coefficients, calculated as the ratio between certified value and experimental one, both for LIBS and ICP, were considerably less close to one for LIBS than for ICP. In order to minimize the matrix effect, a model for correcting LIBS data by taking into account the plasma temperature experimentally determined both in the unknown and in the standard sample was introduced. Preliminary results showed a considerable improvement in the correlation coefficients for corrected LIBS data. Once the model validity is proven for different elements used in the plasma temperature determination, which is possible once known all the parameters of Boltzmann equation for experimental intensity spectral line, it is quite general and can be applied on all the samples and for all the elements. [Italian] Il LIBS (Laser induced breakdown spectroscopy) e' una tecnica spettroscopica sperimentale che trova applicazione nell'analisi di campioni di interesse ambientale, quali suoli e rocce, ed industriali, come leghe metalliche. In questo rapporto sono presentati i risultati dell'applicazione della tecnica a campioni eterogenei di suoli certificati dal Joint Research Centre di Ispra (Varese) per la valutazione delle concentrazioni di metalli pesanti di interesse agronomico (Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn). Nella tecnica LIBS, un impulso laser d'alta potenza e' focalizzato sul campione in modo da provocare sulla superficie dello stesso un piccolo volume di plasma. Le emissioni delle singole specie atomiche sono raccolte da fibra ottica e analizzate da un monocromatore e da un analizzatore ottico (iCCD). Il riconoscimento e l'assegnazione delle emissioni spettrali corrispondenti ai singoli elementi atomici permette di riconoscere la

  1. How the George W. Bush Administration Made Conflict Resolution Obsolete

    Directory of Open Access Journals (Sweden)

    Anthony P. Johnson

    2009-05-01

    Full Text Available In 2000 the last year for Americans feeling comfortableand secure at home, the newly elected President George W.Bush promised Americans and the rest of the world thatunder his new administration he would promote bipartisan,peace, and mediation to address not just America'sconcerns, but the world's as well. Then 9/11 changedeverything! Forever! President Bush would not only break allpromises made pre 9/11, he and his administration wouldbreak the law on every level of government. From nationallaws in the U.S. Constitution that have governed America formore than two-hundred years to international conflictresolution laws that have lasted for more than a millennium,Mr. Bush violated them.

  2. The George W. Bush administration: a new environment?

    International Nuclear Information System (INIS)

    Bush rejection of the Kyoto protocol and refusal to regulate carbon dioxide emissions was one of many moves that has been unpopular with American environmentalists. In the last four years, they have criticized Bush and his administration for pushing changes to clean air law, forestry policy and endangered species laws. The administration has also come under fire for proposals to drill for oil in sensitive lands. These groups have found some potent allies in Congress, including some moderate Republicans, and in the states. Supporters of Bush environmental initiatives, including most Republican congressional leaders, industry groups and conservative organizations, have called his policy balanced and say that he brings a ''common sense'' approach to industry regulation. These two sides have found little in common in the last four years, and have compromised on almost nothing. As a result, the environment, once a bi-partisan issue, has become more and more a polarizing one. (author)

  3. High voltage bushing having weathershed and surrounding stress relief collar

    Science.gov (United States)

    Cookson, Alan H.

    1981-01-01

    A high voltage electric bushing comprises a hollow elongated dielectric weathershed which encloses a high voltage conductor. A collar formed of high voltage dielectric material is positioned over the weathershed and is bonded thereto by an interface material which precludes moisture-like contaminants from entering between the bonded portions. The collar is substantially thicker than the adjacent weathershed which it surrounds, providing relief of the electric stresses which would otherwise appear on the outer surface of the weathershed. The collar may include a conductive ring or capacitive foil to further relieve electric stresses experienced by the bushing.

  4. The optimization of electric motors repair techniques as a mean for electric energy saving; La optimizacion de las tecnicas de reparacion de motores electricos como un medio para ahorrar energia electrica

    Energy Technology Data Exchange (ETDEWEB)

    Zagal Leon, Juan Ruben [Fideicomiso para el Ahorro de Energia Electrica (FIDE), Mexico, D. F. (Mexico)

    1998-12-31

    This paper presents, in a very concise, which are the techniques to optimize the electric motors repair made by the Fideicomiso para el Ahorro de Energia Electrica (FIDE), the loss of efficiency that might exist after repairing an electric motor, as well as the procedures to perform an optimum reparation of the electric motors. Furthermore, some recommendations are given for the selection of an adequate rewinding shop to guarantee that the motor does not suffer efficiency losses after its repair. [Espanol] Este trabajo presenta, de manera muy concreta, cuales son las tecnicas para optimizar las tecnicas de reparacion de motores electricos realizado por el Fideicomiso para el Ahorro de Energia Electrica (FIDE), el nivel de perdida de eficiencia que puede existir despues de reparar un motor electrico, asi como los procedimientos para realizar una optima reparacion en motores electricos. Asimismo, se proporcionan algunas recomendaciones para seleccionar un taller de reembobinado adecuado para garantizar que el motor no sufra perdidas de eficiencia despues de su reparacion.

  5. L'analisi tecnica dei mercati valutari ha una redditività persistente?

    Directory of Open Access Journals (Sweden)

    L. MENKHOFF

    2013-10-01

    Full Text Available The effect of technical analyses on the performance of subsequent policies and actions in the foreign exchange markets is analysed using three cases. Results show that use of technical analyses is persistently profitable. Participants, however, tend to view short-term market risk as important and thus decide to forego some of the rules derived from technical analysis. This observation does not negate the theory on efficient learning.  JEL Codes: F31Keywords: Research, Foreign exchange, Learning  

  6. L'analisi tecnica dei mercati valutari ha una redditività persistente?

    Directory of Open Access Journals (Sweden)

    L. MENKHOFF

    1995-09-01

    Full Text Available The effect of technical analyses on the performance of subsequent policies and actions in the foreign exchange markets is analysed using three cases. Results show that use of technical analyses is persistently profitable. Participants, however, tend to view short-term market risk as important and thus decide to forego some of the rules derived from technical analysis. This observation does not negate the theory on efficient learning.

  7. Implementation of an analytical technique for Samarium; Implementacion de una tecnica analitica para Samario

    Energy Technology Data Exchange (ETDEWEB)

    Garcia G, N. [ININ, Carretera Mexico-Toluca Km. 36.5, 52045 Estado de Mexico (Mexico)

    2004-07-01

    Since the Samarium presents the same chemical properties that the plutonium, it has been used as homologous in studies that allow us to know the behavior that the plutonium presents in solution, with the advantage of working with an inactive and not very dangerous element. At the moment studies of sorption of plutonium or samarium are made on some mineral matrices that present certain surface properties. Due to the low concentrations that are used in the studies of sorption of samarium on those reagent substrates, their detection becomes very difficult for the conventional analysis media. The luminescence is a technique that can detect lower concentrations, smaller at 1 X 10{sup -} {sup 2} M, but when fluorofors are used this limit of detection increases in several orders of magnitude. In this work it has been used the arsenazo-III as fluorofor agent since it reacts in a specific way with the samarium, forming a complex that presents a proportional luminescence to the concentration of the present samarium. The advantage of making the quantification of samarium by luminescence is that it can use the same instrumental equipment to determine the speciation of the samarium sipped in the zircon. (Author)

  8. L’économie américaine sous l’Administration Bush The US Economy under the Bush Administration

    Directory of Open Access Journals (Sweden)

    Frédéric Lambert

    2010-03-01

    Full Text Available Cet article dresse un bilan de la performance économique américaine au cours des huit années de la présidence Bush. Sous l’Administration Bush, et après une année de récession consécutive à l’éclatement de la « bulle internet », l’économie américaine a connu six années d’expansion. Cette expansion a été plus forte que dans les autres économies du G7, grâce notamment à une croissance plus élevée de la productivité et à une politique monétaire accommodante. Elle s’est néanmoins accompagnée d’un certain nombre de déséquilibres qui pesaient sur la situation dans les derniers mois de la présidence Bush.This article surveys the performance of the US economy over the eight years of the Bush Presidency. Under the Bush Administration and after a year of recession following the bursting of the internet bubble, the American economy enjoyed six years of expansion. This expansion was stronger than in the other G7 economies, thanks in particular to higher productivity growth and a very supportive monetary policy. However, it was the source of several imbalances which weighed on the situation as the Bush Presidency was drawing to a close.

  9. LA IDEOLOGÍA NEOCONSERVADORA Y EL GOBIERNO DE GEORGE W. BUSH

    Directory of Open Access Journals (Sweden)

    John Saxe Fernández

    2004-07-01

    Full Text Available El 15 de Septiembre de 2002, casi al año de los ataques contra las Torres Gemelas y el Pentágono,el Sunday Herald informó sobre la existencia de un plan elaborado por un instituto “neo-conservador”,ese es el término usado en la nota periodística,identificado como el “Proyecto para un Nuevo Siglo Estadounidense”, que empezó a funcionar en1997.Este instituto se orientó al impulso de lo que su documento fundacional califica como “una política reaganiana de fortaleza militar y de claridad moral”, considerada como algo “necesario para que EUA, basado en los éxitos del siglo pasado, consolide nuestra seguridad y nuestra grandeza en el próximo siglo”. El documento, de línea ultranacionalista, plantea la “creación de una Pax Americana Global”, y fue endosado por DickCheney, Donald Rumsfeld, Paul Wolfowitz, JeffBush y Lewis Lobby, jefe del personal de Cheney, con la participación de operadores políticos eideólogos como Elliott Abrams y Francis Fukuyama. El Sunday Herald enfatizó que, según el documento, “antes de que asumiera la presidencia en Enero de 2000, Bush y su gabineteya estaban contemplando y planeando un “cambio de régimen” en Irak por medio de un ataque premeditado contra ese país.

  10. 76 FR 72003 - Proposed Collection, Laura Bush 21st Century Librarian Grant Program Evaluation

    Science.gov (United States)

    2011-11-21

    ... THE ARTS AND THE HUMANITIES Proposed Collection, Laura Bush 21st Century Librarian Grant Program... proposed study of the impacts of the Laura Bush 21st Century Librarian Grant Program. A copy of the... develop plans to conduct a program evaluation of the Laura Bush 21st Century Librarian Grant Program...

  11. Tecnica di densificazione attraverso la strategia delle centralità urbane di tipo metropolitano.

    OpenAIRE

    Strina, Paolo

    2015-01-01

    La tesi adotta e sperimenta la tecnica di densificazione attraverso la strategia delle centralità all’interno di contesti urbani di medie dimensioni. Il campo di analisi applicata prescelto è composto dalle dieci città capoluogo di provincia della Regione Emilia Romagna. Il carattere dominante delle città contemporanee, riscontrabile anche nelle città emiliano-romagnole, è la dispersione della forma. Lo sviluppo diffuso della città contemporanea è stato alimentato nell’ultimo ventennio da...

  12. Oliver Stone : "Bush oli paadialune!" / Oliver Stone ; interv. Margit Tõnson

    Index Scriptorium Estoniae

    Stone, Oliver

    2008-01-01

    Kreekas, Thessaloniki filmifestivalil antud intervjuu. Festivalil linastus režissööri mängufilm "W", mille peaosas George Bush jun. (mängib Josh Brolin). Lisaks filmist : ""W" - ümbersündinud mehe kentsakas portree"

  13. FEA based Dissipation Energy and Temperature Distribution of Rubber Bushing

    Directory of Open Access Journals (Sweden)

    Zhengui Zhanga ,

    2016-01-01

    Full Text Available Rubber bushings used in the vehicle or aerospace can reduce the noise and vibration and absorb the shocks. The heat accumulation in the rubber components is attributed to the nonlinear mechanical behavior of rubber and leads to degeneration of mechanical properties. The viscoelastic damping is treated as the major mechanism of dissipation energy, which is heat source of temperature rising in bushing. A finite element method is expanded from elastic structure to viscoelastic structure and computes the dissipation energy distribution in the rubber core. Based on that heat source, the temperature distribution of rubber bushing under radial harmonic excitation has been calculated using finite volume method. The frequency and amplitude effect on dissipation energy and temperature distribution are described. The radial dynamic testing is carried out and the temperature is recorded using thermal imager to evaluate the simulation. As complement, the dynamic torsional testing is also carried out explore the possible failure zone of rubber bushing under different types of loading.

  14. Energies: the president Bush gets nuclear energy started again

    International Nuclear Information System (INIS)

    The president Bush has produced a plan that comprises five priorities to answer to the energy crisis that hits Usa. These new measures concern the techniques development to save energy, the increase of distribution infrastructures, the increase of production, the development of environment protection techniques and a better supplies safety. (N.C.)

  15. Bush annab kinga kindralitele Iraagis, vahetub ka luurejuht / Kaivo Kopli

    Index Scriptorium Estoniae

    Kopli, Kaivo

    2007-01-01

    Vaatlejate hinnangul esitab president Bush uue Iraagi-strateegia, mis näeb ette lisaks kuni 20 000 sõjaväelase Iraaki saatmist ning muudatusi sõjalises juhtkonnas. Ametist lahkuvad Iraagis vägesid juhatav kindral George Casey ning Iraagi ja Afganistani operatsioonide üldjuht John Abizaid

  16. Budgets come first as Bush chooses NASA head

    CERN Multimedia

    Schrope, M

    2001-01-01

    President Bush has nominated a budget expert with no aerospace or scientific background as the agency's administrator. Sean O'Keefe, formerly scrutinized overspending in the International Space Station programme. If appointed, he will have to implement reforms he himself recommended (1/2 page).

  17. Extracting clades from the "Loach Bush": Botiidae (Teleostei:Cobitoidea)

    Czech Academy of Sciences Publication Activity Database

    Šlechtová, Vendula; Bohlen, Jörg; Freyhof, J.

    Tallinn: Estonian marine institute, 2004. s. 111-112. ISBN 9985-4-0396-7. [European Congress of Ichthyology /11./. 06.09.2004-10.09.2004, Tallinn] R&D Projects: GA AV ČR IAA6045405 Keywords : loach bush Subject RIV: EB - Genetics ; Molecular Biology

  18. Estimated losses of energy in a power system using a semi-statistical methodology; Estimacion de perdidas de energia en un sistema electrico de potencia mediante una metodologia semi-estadistica

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Martinez, D [Centro Universitario UAEM, Valle de Teotihuacan (Mexico)]. E-mail: david_2mtz@hotmail.com; Martinez Lendech, J.F [Instituto Tecnologico de Estudios Superiores del Oriente del Estado de Hidalgo (Mexico)]. E-mail: mrtzlendech@hotmail.com; Garcia Herrera, C; Olvera Ricano, J.G. [Centro Universitario UAEM, Valle de Teotihuacan (Mexico)]. E-mails: cozobi_garcia@yahoo.com.mx; jgolverar@uaemex.mx

    2013-03-15

    Determination of electrical losses is one of the most important tasks for any enterprise dedicated to generation, transmission, transformation and/or distribution of electric energy. Any enterprise dedicated to these activities does continuously energy balances in order to estimate whole electrical losses of specific processes. However, it is necessary to classify the whole electrical losses into technical and non-technical losses. This paper presents a proposal for estimating technical and non-technical losses in an electrical power system. [Spanish] La determinacion de las perdidas de energia electrica es una de las labores mas importantes en cualquier empresa dedicada a la generacion, transmision, transformacion y/o distribucion de energia electrica. Es indudable que toda empresa dedicada a cualquiera de las actividades mencionadas anteriormente realiza periodicamente balances de energia que permiten estimar el valor de las perdidas totales de energia del proceso considerado. No obstante, para poder realizar un mejor analisis de la problematica de las perdidas de energia, es necesario separar el valor total de perdidas obtenido mediante un balance de energia, en perdidas tecnicas y perdidas no tecnicas. El presente trabajo presenta una propuesta para la estimacion de perdidas tecnicas y no tecnicas en un sistema electrico de potencia.

  19. Application of the Finite Element Method in the Glass Fiber Bushing Research

    Institute of Scientific and Technical Information of China (English)

    CHEN Song; LU Jiansheng; GUAN Weiming; ZHANG Kunhua; PAN Yong; TAN Zhilong; XIA Lu

    2012-01-01

    Design and optimization of bushing at present mainly use the traditional experience method.The relevant research that adopts computer simulation to carry on the operation behavior of the bushing has appeared in recent years.How to use the finite element method to research bushing was introduced in the article.Physics fields and many relevant parameters of one real bushing were calculated.Through the results of calculation,it indicate that the finite element method is very useful in bushing research of designing and optimizing.

  20. Bush doctrine in the Middle East; The US foreign policy towards the Middle East during the George W. Bush presidency

    Directory of Open Access Journals (Sweden)

    Lukáš Hoder

    2011-06-01

    Full Text Available The article is focused at the most important elements of the US foreign policy towards the Middle East during the administration of George W. Bush (2001 – 2009. The text has two parts. The first part shows three important influences on creation and formulation of the US foreign policy towards the region. At the first place it was an effort to preserve unipolar character of the international system, hegemonic possition of the USA and its dominance in all regions. The second source was specific decision-making process set up by president Bush and the third source of the Bush strategy was a partial transformation of the US longtime policy towards the Middle East. The second part of the article discuss results of the Bush doctrine in the region. The text is focused at five most important consequences of the US foreign policy, which are the fight against proliferation of weapons of mass destruction, the pursuit of the democratization throughout the region, the Israel-Palestinian conflict, regional “cold war” between Iran and Saudi Arabia and finally the struggle to stabilize the post-conflict Iraq.

  1. New imperialism and beyond: why the new imperialism will fail and unseat the Bush Administration?

    Directory of Open Access Journals (Sweden)

    Petri Minkkinen

    2008-12-01

    Full Text Available Tras los atentados terroristas del 11S de 2001, los Estados Unidos implantaron una política de nuevo imperialismo y de construcción de un nuevo tipo de imperio mundial. Las políticas globales norteamericanas pueden dividirse en economista, cooperativista y reglada por el idealismo Wilsoneano, y el imperialismo Rooseveltiano, basado en un nacionalismo agresivo, militarismo, unilateralismo y governanza global  basada en reglas directas, presencia física y coerción. Las políticas de la administraciones Bush representan esta última vertiente y la Guerra contra el Terror puede ser interpretada como una Primera Guerra Mundial y una guerra civil en los Estados Unidos. Se proclama que un nuevo imperialismo fracasará debido a diversas razones de tipo económica, política, étnica e histórica, y que esta política está debilitando la posición global de Estados Unidos. Al final, se explica cómo en el contexto de una Nueva Contención Pacífica, los ciudadanos norteamericanos y los ciudadanos del resto del mundo pueden utilizar la democracia en contra del nuevo imperialismo y apoyar un cambio de régimen democrático en Estados Unidos, procediendo a la construcción conjunta de un  mundo democrático y justo.________________ABSTRACT:After the terrorist attacks of S-11-2001 the US engaged in the policies of new imperialism and in the construction of a new kind of world-empire. US global policies can be divided in detached, economist, cooperative, rule-based Wilsonian Idealism and Theodore Rooseveltian Imperialism, based on aggressive nationalism, militarism, unilateralism and global governance based on direct rule, physical presence and coercion. The Bush administrations policies represent the latter and the War on Terror and Non-White Others can be seen as a First World War and an Internal Civil War in the US. It is claimed that the new imperialism will fail due to various economic, political, ethical and historical reasons and that this

  2. Identification of a novel ga-related bush mutant in pumpkin (cucurbita moschata duchesne)

    International Nuclear Information System (INIS)

    Pumpkin (Cucurbita moschata Duchesne) bush mutant plants were characterized by short stems. The sensitivity of pumpkin bush mutant plants to exogenous hormones was identified in this study. Results revealed that internode elongation of bush mutant plants could respond to gibberellins (GA4+7 and GA3), but not to indole acetic acid (IAA) and brassinosteroids (BR); by contrast, the mutant phenotype of bush mutant plants could not be fully rescued by GA4+7 and GA3. The internode of bush mutant plants yielded a lower KS expression level than that of vine plants. Therefore, pumpkin bush mutant plants were designated as GA-related mutant plants eliciting a partial response to GAs; the action of IAA and BR might not be involved in the internode growth of pumpkin bush mutant plants, specifically Cucurbita moschata Duch. (author)

  3. High voltage insulation of bushing for HTS power equipment

    Science.gov (United States)

    Kim, Woo-Jin; Choi, Jae-Hyeong; Kim, Sang-Hyun

    2012-12-01

    For the operation of high temperature superconducting (HTS) power equipments, it is necessary to develop insulating materials and high voltage (HV) insulation technology at cryogenic temperature of bushing. Liquid nitrogen (LN2) is an attractive dielectric liquid. Also, the polymer insulating materials are expected to be used as solid materials such as glass fiber reinforced plastic (GFRP), polytetra-fluoroethylene (PTFE, Teflon), Silicon (Si) rubber, aromatic polyamide (Nomex), EPDM/Silicon alloy compound (EPDM/Si). In this paper, the surface flashover characteristics of various insulating materials in LN2 are studied. These results are studied at both AC and impulse voltage under a non-uniform field. The use of GFRP and Teflon as insulation body for HTS bushing should be much desirable. Especially, GFRP is excellent material not only surface flashover characteristics but also mechanical characteristics at cryogenic temperature. The surface flashover is most serious problem for the shed design in LN2 and operation of superconducting equipments.

  4. Beyond Bush: Environmental politics and prospects for US climate policy

    International Nuclear Information System (INIS)

    The United States was a pioneer in domestic environmental lawmaking, and it was a leader in international environmental cooperation in the final decades of the last century. During the current decade, however, it has moved away from cooperating with other states in finding new ways to protect the global environment. While its early efforts to address climate change were no worse, and often better than, other developed countries, it has fallen far behind as a number of European states and the European Union have started to implement robust policies to reduce their greenhouse gas emissions. This chapter recounts this evolution in US policy from environmental leader to environmental laggard. It summarizes the US climate change-related policies and diplomacy, recounting significant events during the presidential administrations of George HW Bush, Bill Clinton and George W Bush. It then extends this summary of events to assess the prospects for US climate policy in the near future

  5. Dynamic Spring Model of Rubber Bush Based on Linear Viscoelasticity

    Science.gov (United States)

    Fujikawa, Masaki; Sato, Masami; Kobayashi, Takaya

    A set of simplified formulae is proposed for estimating the dynamic spring constants of rubber bushes used in suspension systems. These formulae are structured by extending a set of elastic solutions[Editor2] proposed before to calculate the dynamic spring constants according to the associated law (pseudo-elasticity) of the linear viscoelasticity theory. A unique feature of this method is that it helps in the easy and quick evaluation of the dynamic behavior of rubber bushes for all the six degrees of freedom (axial loading, loading normal to an axis in two directions, wrench in two directions, and torsion[Editor3]) with no direct involvement of the FEM. In order to validate this method of calculation, the results obtained for all the degrees of freedom are compared with those obtained using the FEM. It is verified that this approach is capable of qualitatively reproducing the results obtained by using the FEM analysis.

  6. Afgang: George W. Bushs eftermæle

    DEFF Research Database (Denmark)

    Ashbee, Edward

    2009-01-01

    Bush får aldrig plads blandt de store præsidenter på Mount Rushmore; vælgerne har sjældent været så fordømmende over for en afgående præsident. Formentlig vil eftertidens dom være mildere......Bush får aldrig plads blandt de store præsidenter på Mount Rushmore; vælgerne har sjældent været så fordømmende over for en afgående præsident. Formentlig vil eftertidens dom være mildere...

  7. Toxicity and In vitro Digestibility of Creosote Bush and Tar Bush Fermented under Fungal Solid State Culture Conditions

    Directory of Open Access Journals (Sweden)

    2007-01-01

    Full Text Available Creosote bush and tar bush are 2 xerophilic shrubs considered as potential animal feed after their fungal fermentation to reduce the tannins content. Kinetics of biodegradation of tannins during the fermentation of both plants by 2 strains of Aspergillus niger (GH1 and PSH were evaluated under solid state culture conditions. The in vitro digestibility and the presence of mycotoxins were also analyzed in the fermented plants. The growth of fungal strain was directly associated to biodegradation of tannins (hydrolysable and condensed tannins in both plants. A. niger GH1 degraded more than 94% of total tannins of creosote bush while, A. niger PSH degraded already of 77% of total tannins of tar bush. Results of digestibility of fermented materials were 9.72% for creosote bush and 13.98% for tar bush, respectively. Aflatoxins present in creosote bush were B1 (692 ppt, B2 (< 160 ppt and G1 (< 160 ppt and for tar bush B1 (182 ppt, B2 (< 160 ppt and G1 (< 160 ppt. These results showed that animal health risk by the consumption of these kinds of fermented products is very low because are according with the official norms.

  8. Voltage stability evaluation facing small disturbances by means of the modal analysis technique; Evaluacion de la estabilidad de voltaje ante disturbios pequenos mediante la tecnica de analisis modal

    Energy Technology Data Exchange (ETDEWEB)

    Leon Rodriguez, Daniel

    2000-12-15

    . Estos aspectos han provocado que dichos sistemas operen con margenes de seguridad mas limitados y que su estabilidad tenga que ser analizada de una manera confiable y precisa. Tomando en cuenta los aspectos arriba mencionados, a medida que los sistemas electricos han tenido que operar en condiciones mas forzadas para satisfacer la demanda de la carga, los problemas de estabilidad de voltaje se han presentado con mayor frecuencia provocando serios disturbios y en algunos casos, hasta apagones totales. Ante la ocurrencia de estos problemas, el analisis de establidad de voltaje ha cobrado cada vez mayor importancia en los estudios de las companias suministradoras de energia electrica provocando con esto que se destinen mayores recursos para la investigacion de este fenomeno con el proposito de comprenderlo y desarrollar tecnicas y herramientas que permitan estudiarlo de una manera mas completa. El analisis modal es una de las mas recientes tecnicas en estado estable la cual, desde su aparicion ha tenido un gran auge debido a la valios y rapida informacion que proporciona, ademas de su facilidad de implementacion y el poco esfuerzo computacional que requiere. En este trabajo se realiza la evaluacion de la estabilidad de voltaje d eun sistema electrico real aplicando de manera conjunta la tecnica de analisis modal con otras tecnicas convencionales como las curvas P-V y V-Q. Se ilustra tambien la manera en que la distinta informacion obtenida de estas tecnicas se complementa para lograr un estudio de estabilidad de voltaje mas completo y representativo. Ademas de analizar la estabilidad de voltaje para las condiciones normales de operacion (caso base), se evaluan tambien tres distintas alternativas de compensacion reactiva capacitiva con objeto de mejorar el margen o distancia a la inestabilidad de voltaje del sistema. Los resultado obtenidos con cada una de las opciones de compensacion son analizados y comparados entre si para finalmente proponer la alternativa que presente

  9. George Bush peab sõjalist jõudu viimaseks valikuks / George W. Bush ; interv. Kaarel Kaas

    Index Scriptorium Estoniae

    Bush, George W., 1946-

    2005-01-01

    Ilmunud ka: Põhjarannik 7. mai 2005, lk. 2, Severnoje Poberezhje 7. mai, 2005, lk. 2. USA president George Bush andis 5. mail Valges Majas intervjuu kuuele Euroopa ajakirjanikule. 9. mai pidustustest Moskvas, USA-Läti, Venemaa-Balti riikide suhetest, demokraatiast Venemaal, Ameerika Ühendriikide ning Baltimaade viisarežiimist, vabaduse mõistestst, kinnipeetavate kohtlemisest Guantanamo sõjaväebaasis, relvade kasutamise vajadusest, terrorismist. Vt. samas: Kuidas usutlus võimalikuks sai

  10. Like Father, Like Son? A Comparison of the Foreign Policies of George H.W. Bush and George W. Bush

    Directory of Open Access Journals (Sweden)

    Marc J. O'Reilly

    2009-12-01

    Full Text Available Este artículo aplica aproximaciones cognitivas (por ejemplo, la del liderazgo y poliheurísticas a la toma de decisiones en política exterior para explicar las variaciones en las políticas de George H. W. Bush y George W. Bush. Yuxtaponer estos enfoques relacionados ilustra el cómo y el por qué del proceso  de toma de decisiones de los presidentes estadounidenses, proporcionando un sintético pero más trabajado, análisis en la comprensión de la política exterior, especialmente cuando ésta afecta a las presidencias. La sección inicial del artículo confronta las dos teorías. La siguiente sección examina decisiones importantes a través de estudios de caso (uno por cada administración. La sección final analiza las decisiones dentro del contexto teórico. Mientras que el artículo enfatiza el nivel individual de análisis, factores tanto estructurales como doméstico también serán tenidos en cuenta._______________________ABSTRACT:This article applies cognitive (i.e., leadership and poliheuristic approaches to foreign-policy decision making to explain variances in the policies of George H.W. Bush and George W. Bush. Juxtaposing these related approaches highlights the how and why of presidential decision making, providing a synthetic, though more cogent, understanding of foreign-policy analysis -- especially as it pertains to presidencies. The initial section of the article discusses the two theories. The following section examines important decisions via case studies – one for each administration. The final section analyzes the decisions in the context of the theories. While this article emphasizes the individual level of analysis, structural as well as domestic factors will also be discussed.

  11. ESTIMATION OF VERY FAST TRANSIENT OVER VOLTAGES ON BUSHING CONNECTED IN GIS

    Directory of Open Access Journals (Sweden)

    A.RAGHU RAM

    2012-02-01

    Full Text Available In a number of GIS installations, the connection to the transformer is given through either SF6 / air bushing or SF6 / oil bushing. The VFTO generated internal to GIS may propagate to the transformer winding through the above capacitive graded bushing (generally 245 KV and above. The voltage distribution under very fast transients may be highly non-linear due to having frequency components in the range of 100 MHz and above. Further, continuous application of these oscillating, aperiodic over voltages to the capacitively graded bushing may cause discharges inside the bushing, which may progressively degrade its insulation strength. The voltagedistribution across various layers of capacitively graded bushing has been estimated by representing the layers as an equivalent multi-stage Π sections with Pspice

  12. Artificial Neural Network and Rough Set for HV Bushings Condition Monitoring

    OpenAIRE

    Mpanza, LJ; Marwala, T.

    2011-01-01

    Most transformer failures are attributed to bushings failures. Hence it is necessary to monitor the condition of bushings. In this paper three methods are developed to monitor the condition of oil filled bushing. Multi-layer perceptron (MLP), Radial basis function (RBF) and Rough Set (RS) models are developed and combined through majority voting to form a committee. The MLP performs better that the RBF and the RS is terms of classification accuracy. The RBF is the fasted to train. The committ...

  13. A high voltage, high current cyrogenic bushing for the Westinghouse LCP magnet main leads

    International Nuclear Information System (INIS)

    A satisfactory method for producing large helium leak tight insulating bushings for use at 4 K. Main lead design is illustrated, specifically the LCP coil main lead location and assembly cross section. Bushing geometry is described. Cryogenic test of busing mockup includes illustrations of the main lead bushing test piece cross section and the main lead cryogenic test arrangement. Test data are presented in graphs showing main lead test, cooldown liquid nitrogen temperature and cooldown from liquid nitrogen temperature to liquid helium temperature

  14. Strategic Planning for Institutions of Higher Education: A Content Analysis for the Universidad Tecnica del Estado Planning System.

    Science.gov (United States)

    Karadima, Oscar

    Ten-year development plans of each of the eight campuses of the Universidad de Santiago de Chile, formerly called Universidad Tecnica del Estado, are evaluated, using content analysis. In addition to narrative descriptions, diagrams illustrate the features of each plan, which covers the period 1983-1993. Topics covered by the plans were grouped…

  15. Taxonomy Icon Data: Japanese Bush Warbler [Taxonomy Icon

    Lifescience Database Archive (English)

    Full Text Available Japanese Bush Warbler Cettia diphone Chordata/Vertebrata/Aves Cettia_diphone_L.png Cettia_diphone..._NL.png Cettia_diphone_S.png Cettia_diphone_NS.png http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Cettia+diphone...&t=L http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Cettia+diphone&t=NL http://bioscie...ncedbc.jp/taxonomy_icon/icon.cgi?i=Cettia+diphone&t=S http://biosciencedbc.jp/tax...onomy_icon/icon.cgi?i=Cettia+diphone&t=NS http://togodb.biosciencedbc.jp/togodb/view/taxonomy_icon_comment_en?species_id=26 ...

  16. Bush doctrine in the Middle East; The US foreign policy towards the Middle East during the George W. Bush presidency

    OpenAIRE

    Lukáš Hoder; Petr Suchý

    2011-01-01

    The article is focused at the most important elements of the US foreign policy towards the Middle East during the administration of George W. Bush (2001 – 2009). The text has two parts. The first part shows three important influences on creation and formulation of the US foreign policy towards the region. At the first place it was an effort to preserve unipolar character of the international system, hegemonic possition of the USA and its dominance in all regions. The second source was specifi...

  17. 77 FR 27253 - Proposed Collection, Laura Bush 21st Century Librarian Grant Program Evaluation

    Science.gov (United States)

    2012-05-09

    ... (FR vol. 76, no. 224, pgs. 72003-72004). No comments were received. Agency: Institute of Museum and... THE ARTS AND THE HUMANITIES Proposed Collection, Laura Bush 21st Century Librarian Grant Program... improvements to the Laura Bush 21st Century Librarian (LB21) Grant Program. The information gathered...

  18. Does phenology distinguish bitter and sweet African bush mango trees (Irvingia spp., Irvingiaceae)?

    NARCIS (Netherlands)

    Vihotogbe, R.; Berg, van den R.G.; Bongers, F.; Sinsin, B.; Sosef, M.S.M.

    2014-01-01

    Key message This phenological analysis of bitter and sweet bush mango trees is part of their biosystematics. It supports the species distinction hypothesis postulated by Harris (Bull J Bot Nat Belg 65(1-2):143-196, 1996 ) and Lowe et al. (Mol Ecol 9:831-841, 2000 ). African Bush Mango trees are prio

  19. Morphological Characterization of African Bush Mango trees (Irvingia species) in the Dahomey Gap (West Africa)

    NARCIS (Netherlands)

    Vihotogbe, R.; Berg, van den R.G.; Sosef, M.S.M.

    2013-01-01

    The variation of the morphological characters of bitter and sweet African bush mango trees (Irvingia species) was investigated in the Dahomey Gap which is the West African savannah woodland area separating the Upper and the Lower Guinean rain forest blocks. African bush mangoes have been rated as th

  20. Root distribution pattern of bush - black pepper (Piper nigrum L.) employing radiotracer technique

    International Nuclear Information System (INIS)

    Root distribution pattern of four-year-old field planted bush pepper (Piper nigrum L.) was studied at Peruvannamuzhi farm of Indian Institute of Spices Research by radiotracer technique. The root zone, up to 30 cm radius and 40 cm depth was round to be the active root zone of bush pepper variety Karimunda grown in the field. (author)

  1. Assessing the Debt: George W. Bush's Legacy and the Future of Public Education under Barack Obama

    Science.gov (United States)

    Means, Alex; Taylor, Kendall

    2010-01-01

    This article utilizes Gloria Ladson-Billings' notion of educational debt in order to explore the historical, economic, and cultural politics of education reform under George W. Bush and Barack Obama. It tracks the No Child Left Behind Act across a number of fields in order to claim that Bush's expansion of the educational debt should be understood…

  2. Sparcity techniques in of load flow studies and three-phase short circuit for unbalanced distribution systems; Tecnicas de esparcidad en estudios de flujos de carga y corto circuito trifasico para sistemas desbalanceados de distribucion

    Energy Technology Data Exchange (ETDEWEB)

    Flores Lopez, Arturo

    1997-07-01

    computacional que permitira a los Ingenieros poder realizar una planeacion mas eficiente del Sistema de Distribucion. El modelo SYSTEM, permite realizar el estudio de Flujos de Carga y Corto Circuito Trifasico en alimentadores desbalanceados del Sistema de Distribucion considerando la instalacion en la red de bancos de capacitores y reguladores de voltaje. El estudio de Flujos de Carga se realiza utilizando el metodo de Gauss Seidel por medio de la matriz Ybus utilizando factorizacion LU y Tecnicas de Esparcidad. El estudio del Corto Circuito Trifasico se realiza por medio del metodo nodal utilizando la matriz Zbus y Tecnicas de Esparcidad.

  3. Guia de Apoio à Decisão em Enfermagem Obstétrica: aplicação da técnica da Lógica Fuzzy Guia de Apoyo a la Decisión en Enfermería Obstetrica: aplicación de la tecnica de la Logica Relativa Decision-support guideline in Obstetrical Nursing: application of Fuzzy Logic technique

    Directory of Open Access Journals (Sweden)

    Isaac R. Marques

    2005-06-01

    Full Text Available A Lógica Fuzzy tem sido utilizada como uma forma de representação de conhecimento e uma técnica para a modelagem de Sistemas de Apoio à Decisões Clínicas. Ao considerar a pouca utilização desta técnica para modelar decisões clínicas de enfermagem, este ensaio objetiva apresentar noções gerais sobre esta técnica e por meio dela desenvolver uma formulação teórica, em forma de guia prático, para o apoio à decisão nos casos de amniotomia em gestantes pimíparas em trabalho de parto normal.La Logica Relativa hay sido utilisada como una abordage de representación del conocimiento y una tecnica para la modelage de Sistemas de Apoyo a Decisiones Clinicas. Al considerar la baja utilización de esta tecnica para la modelaje de decisiones clinicas de enfermería, esto ensayo objectiva presentar nociones generales sobre esta tecnica e por medio de ella desarrollar uma formulación teórica en forma de guia practico para lo apoyo a la decisión en casos de amniotomya en mujeres embarazadas nulíparas en trabajo de parto normal.Fuzzy Logic has been used as an approach for knowledge representation and a technique for modeling Clinical Decision-Support Systems. In considering such technique underutilization for modeling nursing clinical decisions, this essay aims to present general notions about this technique and through it to develop a theoretical formulation of practice guideline to support decision in amniotomy cases for pregnant women in normal labor.

  4. Indigenous Methods in Preserving Bush Mango Kernels in Cameroon

    Directory of Open Access Journals (Sweden)

    Zac Tchoundjeu

    2005-01-01

    Full Text Available Traditional practices for preserving Irvingia wombolu and Irvingia gabonensis (bush mango kernels were assessed in a survey covering twelve villages (Dongo, Bouno, Gribi [East], Elig-Nkouma, Nkom I, Ngoumou [Centre], Bidjap, Nko’ovos, Ondodo [South], Besong-Abang, Ossing and Kembong [Southwest], in the humid lowland forest zone of Cameroon. All the interviewed households that own trees of species were found to preserve kernels in periods of abundance, excluding Elig-Nkouma (87.5%. Eighty nine and 85% did so in periods of scarcity for I. wombolu and I. gabonensis respectively. Seventeen and twenty-nine kernel preservation practices were recorded for I. wombolu and I. gabonensis respectively. Most were based on continuous heating of the kernels or kernel by-products (cakes. The most commonly involved keeping the sun-dried kernels in a plastic bag on a bamboo rack hung above the fireplace in the kitchen. A 78% of interviews households reported preserving I. wombolu kernels for less than one year while 22% preserved it for more than one year with 1.9% for two years, the normal length of the off-season period for trees in the wild. Cakes wrapped with leaves and kept on a bamboo rack hung over the fireplace were reported by households in the East and South provinces to store Irvingia gabonensis longer (more than one year. Further studies on the utilization of heat for preserving and canning bush mango kernels are recommended.

  5. Electrical insulation design and evaluation of 60 kV prototype condenser cone bushing for the superconducting equipment

    International Nuclear Information System (INIS)

    Highlights: •The optimum design of condenser cone cryogenic bushing was investigated. •Multi-layer aluminum foils in the bushing insulation body was designed and analyzed. •The optimum electric field distribution was selected by simulation. •The 60 kV FRP condenser cone cryogenic bushing was fabricated and tested. •BIL test corresponding to IEC 60137 was successfully performed for the bushing. -- Abstract: A cryogenic bushing is an essential component to be developed for commercial applications of high voltage (HV) superconducting devices. Due to the steep temperature gradient of the ambient of cryogenic bushing, general gas bushing adopting SF6 gas as an insulating media could not be directly used due to the freezing of SF6 gas. Therefore, condenser type bushing with special material considering cryogenic environment would be better choice for superconducting equipment. Considering these circumstance, we focused on the design of condenser bushing made of fiber reinforced plastic (FRP). In case of the design of the condenser bushing, it is very important to reduce the electric field intensification on the mounted flange part of the cryostat, which is the most vulnerable part of bushings. In this paper, design factors of cryogenic bushing were analyzed, and finally 60 kV condenser bushing was fabricated and tested. In order to achieve optimal electric field configuration, the configuration of condenser cone was determined using 2D electric field simulation results. Based on the experimental and the analytical works, 60 kV FRP condenser bushing was fabricated. Finally, the fabricated condenser bushing has been tested by applying lightning impulse and AC overvoltage test. From the test results, it was possible to get satisfactory results which confirm the design of cryogenic bushing in cryogenic environment

  6. Study about yield and cutting’s losses of two tea clone bushes in Iran

    Directory of Open Access Journals (Sweden)

    Dadashpour Ahmad

    2015-01-01

    Full Text Available In the first trial, study conducted to compare of yield between two shapes of pruning (curved and flat of tea bushes (clone 100. After leaf harvesting, curved pruning bushes had more yield than flat pruning bushes. Thus curved pruning method can be advised to gardeners as a reliable and superior pruning method. In the secondary experiment, study was carried out to investigation of cutting’s losses in all head-cuttings and comparison between tow types bush in tea (100 and selective. Results showed that there is significant difference between 100 and selective clones at p≤0.05. It means that obtained mean cutting’s losses by selective was less than 100 bushes.

  7. Bush Encroachment Mapping for Africa - Multi-Scale Analysis with Remote Sensing and GIS

    Science.gov (United States)

    Graw, V. A. M.; Oldenburg, C.; Dubovyk, O.

    2015-12-01

    Bush encroachment describes a global problem which is especially facing the savanna ecosystem in Africa. Livestock is directly affected by decreasing grasslands and inedible invasive species which defines the process of bush encroachment. For many small scale farmers in developing countries livestock represents a type of insurance in times of crop failure or drought. Among that bush encroachment is also a problem for crop production. Studies on the mapping of bush encroachment so far focus on small scales using high-resolution data and rarely provide information beyond the national level. Therefore a process chain was developed using a multi-scale approach to detect bush encroachment for whole Africa. The bush encroachment map is calibrated with ground truth data provided by experts in Southern, Eastern and Western Africa. By up-scaling location specific information on different levels of remote sensing imagery - 30m with Landsat images and 250m with MODIS data - a map is created showing potential and actual areas of bush encroachment on the African continent and thereby provides an innovative approach to map bush encroachment on the regional scale. A classification approach links location data based on GPS information from experts to the respective pixel in the remote sensing imagery. Supervised classification is used while actual bush encroachment information represents the training samples for the up-scaling. The classification technique is based on Random Forests and regression trees, a machine learning classification approach. Working on multiple scales and with the help of field data an innovative approach can be presented showing areas affected by bush encroachment on the African continent. This information can help to prevent further grassland decrease and identify those regions where land management strategies are of high importance to sustain livestock keeping and thereby also secure livelihoods in rural areas.

  8. Un test di confronto fra carte catastali e cartografia tecnica

    Directory of Open Access Journals (Sweden)

    Giorgio Bezoari

    2006-06-01

    Full Text Available Uno dei problemi più gravi che affligge l’Italia (peraltro madre di cartografi, topografi e geodeti è la dubbia qualità delle mappe catastali che purtoppo ad oggi versano in uno stato ancora lontano dal poter essere classificata come cartografia di base, sconfinando invece in una sorta di cartografia tematica che affronta appunto il tema della proprietà e dei tributi connessi. Il problema è sentito da decenni e già nel 1945 il CNR aveva proposto l’intera riorganizzazione del servizio geografico dello stato proponendo che gli sforzi deivari enti cartografici (IGM, Catasto, Aeronautica, Marina eGeologico venissero uniti sotto un’unica egida per la realizzazione della Cartografia dello Stato. Purtroppo abbiamo visto che questo non è successo e i problemi sono oggi venuti tutti al pettine così come vengono evidenziati nel presente articolo.

  9. Low-Cost Production of Composite Bushings for Jet Engine Applications

    Science.gov (United States)

    Gray, Robert A.

    1998-01-01

    The objectives of this research program were to reduce the manufacturing costs of variable stator vane bushings by 1) eliminating the expensive carbon fiber braiding operation, 2) replacing the batch mode impregnation, B-stage, and cutting operations with a continuous process, and 3) reducing the molding cycle and machining operations with injection molding to achieve near-net shapes. Braided bushings were successfully fabricated with both AMB-17XLD and AMB-TPD resin systems. The composite bushings achieved high glass transition temperature after post-cure (+300 C) and comparable weight loss to the PNM-15 bushings. ANM-17XLD bushings made with "batch-mode" molding compound (at 0.5 in. fiber length) achieved a +300 lb-force flange break strength which was superior to the continuous braided-fiber reinforced bushing. The non-MDA resin technology developed in this contract appears attractive for bushing applications that do not exceed a 300 C use temperature. Two thermoplastic polyimide resins were synthesized in order to generate injection molding compound powders. Excellent processing results were obtained at injection temperatures in excess of 300 C. Micro-tensile specimens were produced from each resin type and the Tg measurements (by TMA) for these samples were equivalent to AURUM(R). Thermal Gravimetric Analysis (TGA) conducted at 10 C/min showed that the non-MDA AMB-type polyimide thermoplastics had comparable weight loss to PMR-15 up to 500 C.

  10. Big data integration shows Australian bush-fire frequency is increasing significantly

    Science.gov (United States)

    Dutta, Ritaban; Das, Aruneema; Aryal, Jagannath

    2016-01-01

    Increasing Australian bush-fire frequencies over the last decade has indicated a major climatic change in coming future. Understanding such climatic change for Australian bush-fire is limited and there is an urgent need of scientific research, which is capable enough to contribute to Australian society. Frequency of bush-fire carries information on spatial, temporal and climatic aspects of bush-fire events and provides contextual information to model various climate data for accurately predicting future bush-fire hot spots. In this study, we develop an ensemble method based on a two-layered machine learning model to establish relationship between fire incidence and climatic data. In a 336 week data trial, we demonstrate that the model provides highly accurate bush-fire incidence hot-spot estimation (91% global accuracy) from the weekly climatic surfaces. Our analysis also indicates that Australian weekly bush-fire frequencies increased by 40% over the last 5 years, particularly during summer months, implicating a serious climatic shift. PMID:26998312

  11. Techniques for contact and contact with friction problems; Tecnicas para problemas de contacto y contacto con friccion

    Energy Technology Data Exchange (ETDEWEB)

    Velandia Arana, Gonzalo [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1989-12-31

    Different numerical techniques are presented based in the finite element method to obtain numerical solutions to contact and contact with friction problems between solid bodies, and compared between each other. [Espanol] Se presentan diferentes tecnicas numericas basadas en el metodo de elementos finitos para la obtencion de soluciones numericas de problemas de contacto y contacto con friccion entre cuerpos solidos, y se comparan entre si.

  12. A Study on the Body Insulators for the Bushing for HTS Devices at Cryogenic Temperature

    Science.gov (United States)

    Kim, W. J.; Shin, H. S.; Kim, S. H.

    A bushing for high temperature superconducting devices (HTS bushing) is important because of applying high voltage to the cable or the winding of the transformer. It is cooled with liquid nitrogen (LN2) and is insulated with various insulators. For the development of the HTS bushing, it is necessary to know the fundamental characteristics of various insulators at cryogenic temperature. The electrical characteristics of the breakdown were studied under AC and impulse voltages. Also, the mechanical characteristics such as tensile strength in air and LN2 were studied. It was confirmed that GFRP is excellent not only electrical characteristics but also mechanical characteristics in LN2.

  13. Design and Range of Application of Slot Bushings with Volumetric Orifice Fields

    Institute of Scientific and Technical Information of China (English)

    ULYBYSHEV V. V.; VASEKIN V. V.; PERELMAN S. L.

    2012-01-01

    A design of a slot bushing with a volumetric field has been developed,which allows to produce continuous fibers from melts with difficult processing characteristics in order to produce fibers with better operating characteristics.The operability of the design was confirrned when solving two problems of special technological complexity.1.400- and 800-orifice bushings for production of continuous fibers from the basalt melt have been developed and recommended for manufacture.2.The process of production of continuous fibers from standard glass using 2400-orifice bushing with perforated plates instead of orifice tips without air cooling,has been realized for the first time.

  14. Artificial Neural Network and Rough Set for HV Bushings Condition Monitoring

    CERN Document Server

    Mpanza, LJ

    2011-01-01

    Most transformer failures are attributed to bushings failures. Hence it is necessary to monitor the condition of bushings. In this paper three methods are developed to monitor the condition of oil filled bushing. Multi-layer perceptron (MLP), Radial basis function (RBF) and Rough Set (RS) models are developed and combined through majority voting to form a committee. The MLP performs better that the RBF and the RS is terms of classification accuracy. The RBF is the fasted to train. The committee performs better than the individual models. The diversity of models is measured to evaluate their similarity when used in the committee.

  15. Ant Colony Optimization of Rough Set for HV Bushings Fault Detection

    CERN Document Server

    Mpanza, J L

    2011-01-01

    Most transformer failures are attributed to bushings failures. Hence it is necessary to monitor the condition of bushings. In this paper three methods are developed to monitor the condition of oil filled bushing. Multi-layer perceptron (MLP), Radial basis function (RBF) and Rough Set (RS) models are developed and combined through majority voting to form a committee. The MLP performs better that the RBF and the RS is terms of classification accuracy. The RBF is the fasted to train. The committee performs better than the individual models. The diversity of models is measured to evaluate their similarity when used in the committee.

  16. The new financing techniques and the reorganization of the Mexican electric industry; Las nuevas tecnicas de financiamiento y la reorganizacion de la industria electrica mexicana

    Energy Technology Data Exchange (ETDEWEB)

    Islas Samperio, Jorge; Rodriguez Viqueira, Luis [Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico (UNAM), D. F. (Mexico)

    1997-12-31

    The exhaustion of the financing model of the Mexican Electric Industry based on foreign credits, the State contribution and in a small part from auto-financing, has determined the search for new financing sources for the investment in this capital intensive sector. The main characteristic of the State new strategy to increase the investment capacity is to incite the private capital to make massive investments in the electric production segment. Nevertheless, there are different modalities to make the private capital participate in this sector`s segment. In this paper we make an analysis of the new financing techniques and their relationship with the regulations and the electric industry structure. Finally, the role of the conservation and the appropriate use of the energy is discussed as a mechanism for the modulation of the pressures coming from the financial sphere over the reorganization process of the National electric industry. [Espanol] El agotamiento del modelo de financiamiento de la industria electrica mexicana que tiene como base los creditos extranjeros, los aportes del estado y una pequena parte de autofinanciamiento, ha determinado la busqueda de nuevas fuentes de financiamiento de las inversiones de este sector intensivo en capital. La caracteristica principal de la nueva estrategia del estado para aumentar la capacidad de inversion es la de incitar al capital privado a realizar inversiones masivas en el segmento de la produccion electrica. Existen sin embargo diferentes modalidades para hacer participar al capital privado en este segmento del sector. En el presente trabajo hacemos un analisis de las nuevas tecnicas de financiamiento y sus relaciones con la reglamentacion y la estructura de la industria electrica. Por ultimo, se discute el papel del ahorro y uso eficiente como mecanismo para modular las presiones provenientes de la esfera financiera sobre el proceso de reorganizacion de la industria electrica nacional.

  17. Exploitation of biogas in municipal in slaughterhouses: Technical-economical evaluation; Aprovechamiento de biogas en rastros y mataderos municipales: Evaluacion tecnica-economica

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Hernandez, Donaji A.; Castaneda Sanchez, Arlem M.; Garcia Galeana, Erika [Universidad Nacional Autonoma de Mexico (UNAM), Facultad de Ingenieria (Mexico)

    2009-07-01

    Nowadays the treatment of the solid and liquid remainders in the municipal slaughter houses is small because of the idea that the treatment is expensive; nevertheless, it is important to take advantage of them, since this can reduce to the environmental impacts they cause, as well as the discharge of greenhouse effect gas. The use of bio digesters for the treatment of these remainders has become an efficient process to avoid the exit of methane gas to the atmosphere, taking advantage of the biogas and other residues to produce electricity. The elaboration of a technical-economical evaluation of a pilot plant shows the costs of investment, maintenance, as well as the income that can be obtained by the total usage of these residues and the savings in the electrical power consumption. The analysis of this study demonstrates that the use of biogas through bio-digesters for the generation of electrical energy is a profitable option for the treatment of the residues, because the income by the sale of compost, blood flour, as well as the diminution of the electrical tariff, justifies the initial investment. These projects will be more attractive, if they use financing and are registered as MDL projects. [Spanish] Actualmente el tratamiento de los desechos solidos y liquidos en los rastros y mataderos municipales es poco pues se tiene la idea de que el tratamiento es costoso; sin embargo, es importante que se aprovechen ya que esto puede reducir los impactos ambientales que provocan, asi como la emision de gases de efecto invernadero. El uso de biodigestores para el tratamiento de estos desechos, se ha convertido en un proceso eficiente para evitar la salida de gas metano a la atmosfera, aprovechando el biogas y otros residuos para producir electricidad. La elaboracion de una evaluacion tecnica-economica de una planta piloto, muestra los costos de inversion, mantenimiento, asi como los ingresos que se pueden obtener por el aprovechamiento total de estos residuos y el

  18. Condition Monitoring of HV Bushings in the Presence of Missing Data Using Evolutionary Computing

    CERN Document Server

    Dhlamini, Sizwe M; Marwala, Tshilidzi

    2007-01-01

    The work proposes the application of neural networks with particle swarm optimisation (PSO) and genetic algorithms (GA) to compensate for missing data in classifying high voltage bushings. The classification is done using DGA data from 60966 bushings based on IEEEc57.104, IEC599 and IEEE production rates methods for oil impregnated paper (OIP) bushings. PSO and GA were compared in terms of accuracy and computational efficiency. Both GA and PSO simulations were able to estimate missing data values to an average 95% accuracy when only one variable was missing. However PSO rapidly deteriorated to 66% accuracy with two variables missing simultaneously, compared to 84% for GA. The data estimated using GA was found to classify the conditions of bushings than the PSO.

  19. Parasabella Bush, 1905, replacement name for the polychaete genus Demonax Kinberg, 1867 (Annelida, Polychaeta, Sabellidae

    Directory of Open Access Journals (Sweden)

    María Tovar-Hernández

    2010-10-01

    Full Text Available Parasabella Bush, 1905 is reintroduced as a replacement name for Demonax Kinberg, 1867 (Annelida: Polychaeta: Sabellidae which is a junior homonym of Demonax Thomson, 1860 (Insecta: Coleoptera: Cerambycidae.

  20. K-Dimension and H(o)lder Exponent for Bush Type Fractal Functions

    Institute of Scientific and Technical Information of China (English)

    Wang Hongyong

    2006-01-01

    Bush type fractal functions were defined by means of the expression of Cantor series of real numbers. The upper and lower bound estimates for the K-dimension of such functions were given. In a typical case, the fractal dimensional relations in which the K-dimension equals the box dimension and packing dimension were presented; moreover, the exact H(o)lder exponent were obtained for such Bush type functions.

  1. (+)-Larreatricin hydroxylase, an enantio-specific polyphenol oxidase from the creosote bush (Larrea tridentata)

    OpenAIRE

    Cho, Man-Ho; Moinuddin, Syed G. A.; Helms, Gregory L.; Hishiyama, Shojiro; Eichinger, Dietmar; Davin, Laurence B.; Lewis, Norman G.

    2003-01-01

    An enantio-specific polyphenol oxidase (PPO) was purified ≈1,700-fold to apparent homogeneity from the creosote bush (Larrea tridentata), and its encoding gene was cloned. The posttranslationally processed PPO (≈43 kDa) has a central role in the biosynthesis of the creosote bush 8–8′ linked lignans, whose representatives, such as nordihydroguaiaretic acid and its congeners, have potent antiviral, anticancer, and antioxidant properties. The PPO primarily engenders the enantio-specific conversi...

  2. Development of Insulation Technology in Compact SF6 Gas-filled Bushings

    Science.gov (United States)

    Rokunohe, Toshiaki; Kato, Tatsuro; Hirose, Makoto; Ishiguro, Tetsu

    As for gas insulated switchgear (GIS), small space requirement and economical efficiency have been demanded. Circuit breakers (CB), disconnecting switches (DS) and earthing switches (ES) have been designed toward compactness. Compact & light bushings have been also required. As for bushings of GIS, there are roughly three types; capacitor, gas-filled and molding bushings. Since gas-filled bushings have the feature which is both of the lightness and the economical efficiency, it is important to develop compact and light gas-filled bushings by improvement of insulation technology. The main subject for compact design is reduction of electric field strength on the outside hollow insulator around the inside grounded electrode tip. We devised a new inner grounded electrode structure which consists of some column electrodes. This paper describes the effect of reduction of maximum value of electric field strength on the outside hollow insulator by a new inner grounded electrode. Then, improvement of insulation performance for electrodes with insulation coating in SF6 gas is described as composite insulation technology. Finally, the efficacy of these insulation technologies is described by fundamental insulation test results of prototype compact 800kV SF6 gas-filled bushing.

  3. Abnormality of transformer bushing for JT-60 power supply converter and countermeasures

    International Nuclear Information System (INIS)

    The power source for JT-60 poloidal magnetic coils (P power source) is the facility for exciting, maintaining and controlling plasma current and controlling the position and shape of plasma. The structure of the P power source is shown. The secondary side bushing of the transformer for the thyristor converter is so designed as to withstand the large current of 20-25 kA, but the cracking and oil leak occurred in the bushing insulator tubes. In order to investigate this cause, the various tests were carried out. Abnormality was not observed in the observation of the fractured surfaces, the strength test of the insulation tubes and the X-ray inspection of alien substance mixing. The stress in the bushing at the time of tightening bolts was analyzed by finite element method. As the result, there were some parts where the allowable stress of the insulator tubes was exceeded, and those agreed with the parts where fracture occurred. The new supporting fittings for the bushings were made and replaced. The transformer and its rating, the transformer secondary side bushing and an example of its cracking and the investigation of the cause of the cracking of the bushing insulator tubes are reported. (K.I.)

  4. Tabu search, a versatile technique for the functions optimization; Busqueda Tabu, una tecnica versatil para la optimizacion de funciones

    Energy Technology Data Exchange (ETDEWEB)

    Castillo M, J.A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2003-07-01

    The basic elements of the Tabu search technique are presented, putting emphasis in the qualities that it has in comparison with the traditional methods of optimization known as in descending pass. Later on some modifications are sketched that have been implemented in the technique along the time, so that this it is but robust. Finally they are given to know some areas where this technique has been applied, obtaining successful results. (Author)

  5. Techniques of thermal energy conservation; Tecnicas de conservacion de la energia termica

    Energy Technology Data Exchange (ETDEWEB)

    Caltenco Estevez, Juan Luis; Roblez Lopez, Francisco; Ceballos Serna, Andres Alberto [Instituto Mexicano del Petroleo (Mexico)

    1996-07-01

    In modern industry the thermal energy is the energy more intensely used, which implies that in the processes and equipment that operate based on it, rely the greatest opportunities for saving . In this paper some saving and conservation techniques of thermal energy, which nowadays have been developed, are presented, whose application has helped to the successful attainment of the objectives of increased productivity of industrial plants, with the additional benefit of reducing the environmental impact of the production activities. [Spanish] En la industria moderna la energia termica es la forma de energia mas intensamente utilizada, lo cual implica que en los procesos y equipos que operan basandose en esta, residan las mayores oportunidades de ahorro. En este trabajo se presentan algunas de las tecnicas de ahorro y conservacion de energia termica, que hoy en dia se han desarrollado, cuya aplicacion ha coadyuvado a la consecucion exitosa de los objetivos de incremento de la productividad de plantas industriales, con el beneficio adicional de reducir el impacto ambiental de las actividades productivas.

  6. Application techniques of coatings by thermal projection; Tecnicas de aplicacion de recubrimientos por proyeccion termica

    Energy Technology Data Exchange (ETDEWEB)

    Porcayo Calderon, Jesus [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1995-12-31

    The coatings applied by thermal projection have an important number of applications in different industries (chemical, oil, electric, nuclear, etc.). The main purpose of the protection by means of coatings is to alter the surface characteristics of a component so as to resist corrosive environments, abrasion and erosion, among others. The coatings can be applied by different methods, but due to the fact that its characteristics appreciably differ from the base metal, it is important the knowledge of its properties when a coating is selected for a specific use. In this article the characteristics of the applied coatings by thermal projection, the factors that affect its performance and the principal application techniques, are described. [Espanol] Los recubrimientos aplicados por proyeccion termica tienen un numero importante de aplicaciones en diferentes industrias (quimica, petrolera, electrica, nuclear, etc.). El proposito principal de la proteccion por medio de recubrimientos es alterar las caracteristicas de la superficie de un componente de manera que resista ambientes corrosivos, abrasion y erosion, entre otros. Los recubrimientos pueden aplicarse por diferentes metodos, pero debido a que sus propiedades difieren apreciablemente de las del metal base, es importante el conocimiento de sus propiedades cuando se selecciona un recubrimiento para un uso especifico. En este articulo se describen las caracteristicas de los recubrimientos aplicados por proyeccion termica, los factores que afectan su desempeno y las principales tecnicas de aplicacion.

  7. una desgracia en una oportunidad

    Directory of Open Access Journals (Sweden)

    Antonio Pont Amenós

    2005-01-01

    Full Text Available Cada vez es más importante para un directivo el gestionar las crisis que puedan presentarse tanto en el terreno económico como social. El incendio que se produjo en la planta de Reus del Grupo Borges es una experiencia de la que se derivaron muchas lecciones y en la que se tuvieron que tomar muchas decisiones sobre la marcha que implicaron liderazgo, relaciones públicas y gestión de empresa en la que se consiguió convertir una desgracia en una oportunidad.

  8. Modern techniques for the emissions control in thermal electric stations; Tecnicas modernas para el control de emisiones en centrales termoelectricas

    Energy Technology Data Exchange (ETDEWEB)

    Romo Millares, C. A. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1995-12-31

    This paper presents the techniques and the control equipment for emissions in thermal stations that have the highest possibilities of being considered in the immediate future in the national energy panorama and the established frame for the environmental normativity. The pollutant compounds subject to revision are the nitrogen and sulfur oxides and unburned particles. [Espanol] Se presentan las tecnicas y equipos de control de emisiones para centrales termoelectricas que tienen mayores posibilidades de ser consideradas en el futuro inmediato dentro del panorama energetico nacional y el marco establecido por la normatividad ambiental. Los compuestos contaminantes sujetos a revision son los oxidos de nitrogeno y azufre y las particulas inquemadas.

  9. Effects of hedgerows on bats and bush crickets at different spatial scales

    Science.gov (United States)

    Lacoeuilhe, Aurélie; Machon, Nathalie; Julien, Jean-François; Kerbiriou, Christian

    2016-02-01

    Biodiversity is threatened by the loss and fragmentation of habitats. The role of hedgerows in maintaining biodiversity is well established, but few studies have addressed the importance for biodiversity of the intrinsic characteristics of hedgerows and the quality of hedgerow networks along a spatial scale. We examined three quality indices providing information at different territorial levels: density in the landscape, structural diversity and wood production. We performed an acoustic survey in a grassland to estimate the species abundance and community composition of bats (9 taxa) and bush crickets (11 species). Using an approach based on species and traits, we assessed how hedgerow quality influenced the activity of these taxa at different spatial scales (from 50 to 1000 m) and focused on three types of traits: bush cricket mobility ability, bat foraging strategy and habitat specialization. In general, our results showed the importance of hedgerow quality for bats and bush crickets, but the strength of the association between taxa and hedgerows varied substantially among the species and the spatial scales. Although it depends on the taxa, the production, density and structural diversity of hedgerows each had an overall positive effect. Our results suggested that these effects were generally more important at large scales. The scale effect of the production index is the best predictor of activity for bat and bush cricket taxa and traits. Our results showed the importance of hedgerow quality for the ecology of bat and bush cricket communities and could be used to improve conservation management.

  10. The essential role of democracy in the Bush Doctrine: the invasions of Iraq and Afghanistan

    Directory of Open Access Journals (Sweden)

    Maria Helena de Castro Santos

    2013-12-01

    Full Text Available Everyone knows that democracy played a role in the Bush Doctrine. What not everyone knows is that this role was essential for the doctrine to be put into operation under which the Iraq invasion was prepared and launched. We argue moreover that, even if aggressive, the Bush doctrine is compatible with the American Liberal Tradition. To demonstrate these arguments we analyze the links between democracy, security, and the US national interests as expressed in the pillars of the American foreign policy since the end of Cold War. The consequential belief of the Bush Administration on the positive effect of exporting democracy by the use of force to Afghanistan and Iraq to fight terrorism will be remarked. It will be shown, however, that in the first years of the Bush Administration, among the justifications for the military interventions in the two countries, security reasons prevailed over democratic concerns, although the latter was significantly present since the early hours after September 11. It was only when it became clear that WMDs did not exist in Iraq that the exporting of democracy as the ultimate weapon to fight terrorism grew remarkably and prevailed over security reasons to invade those rogue states. The paper uses quantitative and qualitative content analysis of the speeches of President Bush and his Secretaries of State and Defense.

  11. Application of desirability function for optimizing the performance characteristics of carbonitrided bushes

    Directory of Open Access Journals (Sweden)

    Boby John

    2013-06-01

    Full Text Available The performance of a product is generally characterized by more than one response variable. Hence the management often faces the problem of simultaneous optimization of many response variables. This study was undertaken to simultaneously optimize the surface hardness and case depth of carbonitrided bushes. Even though lots of literature has been published on various methodologies for tackling the multi-response optimization problem, the simultaneous optimization of heat treated properties of carbonitrided bushes are not reported yet. In this research the effect of four factors and two interactions on surface hardness and case depth of carbontirded bushes were studied using design of experiments. Based on the experimental results, the expected values of the heat treated properties of the bushes were estimated for all possible combination of factors. Then the best combination which, simultaneously optimized the response variables, was arrived at using desirability function. The study showed that the optimum combination obtained through desirability function approach not only minimized the variation around the targets of surface hardness and case depth but also was superior to the ones obtained by optimizing the response variables separately. Moreover this study provides a useful and effective approach to design the production process to manufacture bushes with customer specified surface hardness and case depth targets.

  12. Pauvreté et politique sociale : le bilan des années Bush  Poverty and Public Policy: An Assessment of the Bush Years

    Directory of Open Access Journals (Sweden)

    Taoufik Djebali

    2010-03-01

    Full Text Available Neuf jours après son investiture, G. W. Bush lançait son programme relatif aux Faith-Based Initiatives (FBI, une partie prenante de son « conservatisme compatissant ». Les FBI constituent une rupture avec la tradition monétariste reaganienne, même si elles s’appuient sur le rejet de l’État et la réduction du budget social. Le rôle des FBI est d’aider les organisations caritatives, notamment religieuses, à s’investir davantage dans le travail social.  Le bilan de la politique sociale de G. Bush est plutôt mitigé. La pauvreté a fortement augmenté et les promesses budgétaires en faveur des Faith-Based Organizations n’ont pas été tenues. Pire, les accusations contre les dérives des FBI fusent. L’administration Bush est accusée d’avoir utilisé les FBI et l’argent public pour obtenir des gains politiques et mettre en place un système de financement occulte en faveur des républicains et leurs alliés.Nine days after he was sworn in, Bush launched his social program, the Faith-Based Initiatives (FBI, a major component of his “compassionate conservatism.” The FBI constituted a break with the Reagan monetarist tradition, even if they are motivated by the withdrawal of the State and the reduction of the social budget. The role of the FBI is to help charities, in particular religious organizations, to invest more in social work. On the whole, the social policy implemented during the Bush years is evaluated negatively. Poverty increased rapidly and the financial promises in favor of the Faith-Based Organizations were not kept. Worse, new revelations have been disclosed. The Bush administration is accused of having used the FBI and public money to make political gains and set up an obscure funding system that benefited the Republicans and their political allies.

  13. Design and production process of bushing-type fuel elements for channel research reactors

    Energy Technology Data Exchange (ETDEWEB)

    Afanasiev, V.L.; Aleksandrov, A.B.; Enin, A.A. [NZHK, Novosibirsk (Russian Federation)

    1998-07-01

    The design of bushing-type fuel elements (FEs) based on the dioxide fuel composition UO{sub 2}+Al for channel research reactors is described. Commercial technological process for bushing-type FEs with up to 0.8 g/cm{sup 3} uranium concentration in the fuel core is presented. This technology is based on fuel core production using powder metallurgy with subsequent chemical treatment of its surface and enclosing into the finished cladding. Commercial technological process for bushing-type FEs with 0.8-3.8 g/cm{sup 3} uranium concentration in the fuel composition is considered. This process is based on fuel core production by means of extrusion technology followed by fuel core enclosing into the cladding. (author)

  14. Evaluation of two polyimides and of an improved liner retention design for self-lubricating bushings

    Science.gov (United States)

    Sliney, H. E.

    1984-01-01

    Two different polyimide polymers were studied and the effectiveness of a design feature to improve retention of the self lubricating composite liners under high load was evaluated. The basic bearing design consisted of a molded layer of chopped graphite-fiber-reinforced-polyimide (GFRP) composite bonded to the bore of a steel bushing. The friction, wear, and load carrying ability of the bushings were determined in oscillating tests at 25, 260 and 315 C at radial unit loads up to 260 MPa. Friction coefficients were typically 0.15 to 0.25. Bushings with liners containing a new partially fluorinated polymer were functional, but had a lower load capacity and higher wear rate than those containing a more conventional, high temperature polyimide. The liner retention design feature reduced the tendency of the liners to crack and work out of the contact zone under high oscillating loads.

  15. Design and Overview of 100 kV Bushing for the DNB Injector of ITER

    Science.gov (United States)

    Shah, Sejal; Rajesh, S.; Nishad, S.; Srusti, B.; Bandyopadhyay, M.; Rotti, C.; Singh, M. J.; Roopesh, G.; Chakraborty, A. K.; Schunke, B.; Hemsworth, R.; Chareyre, J.; Svensson, L.

    2011-09-01

    The 100 kV bushing is one of the most important and technologically challenging Safety Important Class (SIC) components of the Diagnostic Neutral Beam (DNB) injector of ITER. It forms interface between gas insulated electrical transmission line and torus primary vacuum and acts as a vacuum feedthrough of ITER. Design optimization has been carried out to meet the electric and structural requirements based on its classification. Unlike HNB bushing, single stage bushing is designed to provide 100 kV isolation. Finite Element Analysis (FEA) based optimization has been carried out for electrostatic and structural analysis. Manufacturing assembly sequence is studied and presented in this paper. However validation of the same is foreseen from manufacturer.

  16. Design and Overview of 100 kV Bushing for the DNB Injector of ITER

    International Nuclear Information System (INIS)

    The 100 kV bushing is one of the most important and technologically challenging Safety Important Class (SIC) components of the Diagnostic Neutral Beam (DNB) injector of ITER. It forms interface between gas insulated electrical transmission line and torus primary vacuum and acts as a vacuum feedthrough of ITER. Design optimization has been carried out to meet the electric and structural requirements based on its classification. Unlike HNB bushing, single stage bushing is designed to provide 100 kV isolation. Finite Element Analysis (FEA) based optimization has been carried out for electrostatic and structural analysis. Manufacturing assembly sequence is studied and presented in this paper. However validation of the same is foreseen from manufacturer.

  17. 关于一类Bush型分形曲面的维数分析%DIMENSION ANALYSIS ON A CLASS OF BUSH TYPE FRACTAL SURFACES

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    In this paper,the authors construct a class of fractal surfaces,Bush type surfaces,based on the Bush type functions.The Box dimension,Packing dimension and Hausdorff dimension of such surfaces are investigated.

  18. Are Policy Platforms Capitalized into Equity Prices? Evidence from the Bush/Gore 2000 Presidential Election

    OpenAIRE

    Brian Knight

    2004-01-01

    This paper tests for the capitalization of policy platforms into equity prices using a sample of 70 firms favored under Bush or Gore platforms during the 2000 U.S. Presidential Election. Two sources of daily data during the six months leading up to the election are incorporated: firm-specific equity returns and the probability of a Bush victory as implied by prices from the Iowa electronic market. For this group of politically-sensitive firms, the daily baseline estimates demonstrate that pla...

  19. Una nuova metodologia di indagine diagnostica finalizzata alla conservazione ambientale dei manufatti e oggetti sottoposti a tutela artistica ed architettonica

    Directory of Open Access Journals (Sweden)

    Giuseppe Cannistraro

    2012-12-01

    Full Text Available La salvaguardia e tutela del patrimonio artistico ed architettonico rappresenta una complessa problematica nella quale convive la doppia esigenza di preservare e al contempo rendere fruibile il bene. La nuova tecnica di screening proposta si configura come  strumento di valutazione del degrado dell'organismo nel suo complesso sia prima che il danno si verifichi sia a danno avvenuto,  rispetto ad una opportuna valutazione delle priorità. Esso è volto alla formalizzazione di uno strumento operativo per schede in grado di convogliare preziose informazioni ad integrazione di un sistema digitale di banche-dati alfanumeriche e cartografiche: il Sistema Informativo Territoriale della Carta del Rischio (SIT CdR. Esso sintetizza i dati relativi a danni e rischi, ne evidenzia le criticità e gestisce la programmazione degli interventi conservativi.

  20. Detecting and classifying faults on transmission systems using a backpropagation neural network; Deteccion y clasificacion de fallas en sistemas de transmision empleando una red neuronal con retropropagacion del error

    Energy Technology Data Exchange (ETDEWEB)

    Rosas Ortiz, German

    2000-01-01

    es una de las areas de investigacion de mas rapido crecimiento en el campo de la IA y el reconocimiento de patrones. Este trabajo explora la posible aplicabilidad de una tecnica de reconocimiento de patrones basada en redes neuronales para la deteccion y la clasificacion de fallas en un SEP. Las tecnicas convencionales de deteccion en los relevadores modernos se basan en un procesamiento digital de senales y requieren de cierto tiempo (alrededor de 1 ciclo) para enviar una senal de disparo, ademas de ser propensas a tomar decisiones incorrectas si las senales se encuentran contaminadas por ruido. Es deseable entonces desarrollar tecnicas que sean rapidas, exactas y robustas y que tengan un buen desempeno ante las condiciones cambiantes del sistema (como variaciones de carga y resistencia de falla, por ejemplo). El objetivo de este trabajo es desarrollar una tecnica novedosa basada en Redes Neuronales Atificales (RNA), la cual explora la aplicabilidad de la propuesta de reconocimiento de patrones para el diagnostico y deteccion de fallas. La tecnica sugerida se basa en el hecho de que cuando ocurre una falla, toma lugar un cambio de impedancia en el sistema y como consecuencia, cambios en la amplitud y fase de las senales de voltajes y corrientes de linea toman lugar. Se desarrolla un discriminador de fallas basado en redes neuronales que es entrenado para detectar estos cambios como indicadores del instante de ocurrencia de la falla. Este detector utiliza valores instantaneos de esas senales para tomar decisiones. Se describe a detalle la aplicabilidad de las redes neuronales como clasificadores de patrones para el diagnostico de fallas en sistemas de transmision y ademas, se presenta un diseno basado en redes neuronales y su ambiente de simulacion para la deteccion y clasificacion de fallas en tiempo real. Se presentan resultados del desempeno de esta tecnica que muestran que es rapida, segura y suficientemente exacta e indican su aplicabilidad dentro de esquemas de

  1. La politique commerciale de George W. Bush : rupture ou continuité ? American Trade Policy under George W. Bush: Continuity or Change?

    Directory of Open Access Journals (Sweden)

    Jean-Baptiste Velut

    2010-03-01

    Full Text Available Cet article se propose de dresser un bilan critique de la politique commerciale du Président George W. Bush. Dans un premier temps, il compare les perspectives idéologiques et les ambitions politiques du leader républicain à celles de son prédécesseur démocrate, Bill Clinton, avant de mettre l’accent sur les nouvelles données du contexte politique et économique des années 2000. Ces éléments introductifs serviront de fondations, d’une part, pour l’étude de la gestion des relations commerciales entre les États-Unis et leurs principaux partenaires économiques, et d’autre part pour l’analyse de la stratégie de « libéralisation compétitive » adoptée par George W. Bush aux niveaux multilatéral, régional et bilatéral. L’objectif est double : déterminer les lignes de rupture et de continuité entre le président républicain et son prédécesseur ; et établir un bilan des principales initiatives commerciales lancées par l’administration Bush dans le but de mieux comprendre les nouveaux défis intérieurs et internationaux auxquels son successeur sera confronté.This article offers a critical assessment of American trade policy under George W. Bush. It begins by comparing his views and political ambitions with those of his Democratic predecessor, Bill Clinton, before highlighting the new political and economic context of the 2000s. These elements provide crucial background, first to study the evolution of America’s relations with its top trading partners and second to analyze the strategy of “competitive liberalization” undertaken by the administration at the multilateral, regional and bilateral levels. This article has two objectives: 1 determining trends of continuity and change between George W. Bush and his predecessor; 2 assessing the trade policy initiatives undertaken by the Republican administration in order to understand the domestic and international challenges with which the next President

  2. PHYSIOLOGICAL AND BIOCHEMICAL RESPONSES OF BUSH BEAN (PHASEOLUS VULGARIS) TO OZONE AND DROUGHT STRESS

    Science.gov (United States)

    Bush bean (Phaseolus vulgaris L.) plants were exposed to ozone (O3) episodes in open-top chambers in early and late season studies at Corvallis, Oregon. lants were grown in cultural systems that controlled plant water status. he 7-h seasonal mean O3 concentrations were 0.067 and ...

  3. The George W. Bush Economic Philosophy: How It Might Affect Working Families. Family Review.

    Science.gov (United States)

    Lindjord, Denise

    2000-01-01

    Examines impact of presidential candidate George W. Bush's proposed tax cuts on families of various income levels. Discusses how replacing current five-rates with four lower rates would reduce high marginal tax rates for moderate-income working families, focusing on effects of reporting tax breaks in terms of actual dollars rather than…

  4. Putin, Bush issue statement on advancing US-Russian human contacts

    CERN Multimedia

    2002-01-01

    "In addition to interstate, bilateral, regional and global issues discussed by Russian President Vladimir Putin and US President George Bush during their Kremlin summit on 24 May, the two leaders considered issues related to people-to-people contacts, ties between cities, states and regions, institutions and organizations" (1 page).

  5. Bush jättis püüne Putinile / Toomas Alatalu

    Index Scriptorium Estoniae

    Alatalu, Toomas, 1942-

    2007-01-01

    Politoloog tõdeb, et USA president George W. Bush lahkus enne lõppu Aasia-Vaikse ookeani majanduskoostöö organisatsiooni (APEC) tippkohtumiselt ja külastas Iraaki, et kinnitada maailmale Iraagi sõja vajalikkust. Vene president Vladimir Putin tugevdas Vene positsioone maailmas, andes krediiti Indoneesiale Vene laevade ja lennukite ostuks ning sõlmides uraaniostulepingu Austraaliaga

  6. La Reforma Fiscal Durante el Primer Año de la Administración Bush

    OpenAIRE

    Crane, R

    1991-01-01

    LA REFORMA FISCAL DURANTE EL PRIMER AÑO DE LA ADMINISTRACIÓN BUSH Randall Crane* RESUMEN Este ensayo analiza las reformas de la política económica de Estados Unidos en el primer año de la administración del  ...

  7. The political impact of WTO rules : steel tariffs and the Bush administration / William L Burns

    Index Scriptorium Estoniae

    Burns, William L

    2004-01-01

    USA president George W. Bush kuulutas märtsis 2002 välja 30-protsendilise tolli kehtestamise suurele osale teraseimpordist eesmärgiga aidata Ameerika terasetööstusel kohaneda välismaise terase sisseveoga. Poliitiliselt mõjuvõimas Ühendriikide terasetööstus on tollide rakendamist nõudnud juba neli aastat

  8. President Bush's Economic Stimulus Package and Families: A Look at the Details. Family Review.

    Science.gov (United States)

    Lindjord, Denise

    2003-01-01

    Describes the Bush administration's recently proposed economic stimulus package and the Democrats' rival tax-cutting plan, and discusses the impact of the proposed reduction or elimination of taxes on corporate dividends on middle-income families. Considers the extent to which families would benefit from the administration's package and reiterates…

  9. Quails Response to Aqueous Extract of Bush Marigold (Aspilia africana Leaf

    Directory of Open Access Journals (Sweden)

    E. A. Agiang

    2011-01-01

    Full Text Available Problem statement: The effects of inclusion of aqueous extract of Bush marigold (Aspilia africana leaf in quail diet were investigated. One hundred and fifty Japanese quail chicks were used in the study. Approach: In the 14-weeks feeding experiment, the birds were assigned to five treatments of; 0, 2.5, 5.0, 7.5 and 10% inclusion of aqueous extract of Bush marigold leaf. Each treatment had 3 replicates of 10 birds per replicate in a randomized complete block design. Results: The results indicated that feeding Aqueous extract of Bush Marigold Leaf (AeBML did not affect (p>0.05 daily weight gain, feed conversion ratio and carcass yield. Mortality and % cracked eggs were reduced (p0.05 affected by dietary supplementations with AeBML. Egg number and hen day production increased (pConclusion: The study concluded that dietary inclusion of up to 5% aqueous extract of bush marigold leaf in the diets of growing and laying quails could enhance growth performance and egg production traits.

  10. The USA policy evolution in the Caspian sea from Clinton to Bush

    International Nuclear Information System (INIS)

    The author analyzes the USA policy in the Caspian Sea area and its evolution with the election of Bush. If no major orientation appear, some sensible evolutions are presented concerning the pipelines management in this area. The author presents then, the new definition of the economical variables and the reinforcement of the security dimension of the USA policy. (A.L.B.)

  11. Bush mõistis hukka moslemite vägivaldsed meeleavaldused / Kaarel Kaas

    Index Scriptorium Estoniae

    Kaas, Kaarel, 1978-

    2006-01-01

    USA president Georg W. Bush ja välisminister Condoleezza Rice mõistavad hukka moslemite vägivaldsed meeleavaldused, kuid mitte nende ajendiks olnud Muhamedi pilavad karikatuurid ning leiavad, et Iraan ja Süüria kasutavad pilapiltide skandaali oma poliitiliste eesmärkide saavutamiseks

  12. The End of the Bush-Obama Regulatory Approach to School Reform

    Science.gov (United States)

    Peterson, Paul E.

    2016-01-01

    At the turn of the century, the United States was trying to come to grips with a serious education crisis. The country was lagging behind its international peers, and a half-century effort to erode racial disparities in school achievement had made little headway. Many people expected action from the federal government. George W. Bush and Barack…

  13. Obamas opgør med Bush låser ham i dronekrig

    DEFF Research Database (Denmark)

    Ulrich, Philip Christian

    2013-01-01

    En helt central del af Obamas valgkamp i 2008 var et opgør med dele af Bush administrationens krig mod terror. Obama er dog blevet fanget i en kontroversiel dronepolitik på grund af hans manglende succes med de indenrigspolitiske aspekter af opgøret...

  14. George W. Bush at Goree Island: American Slavery and the Rhetoric of Redemption

    Science.gov (United States)

    Medhurst, Martin J.

    2010-01-01

    On July 8, 2003, at Goree Island, Senegal, George W. Bush delivered the most important speech on American slavery since Abraham Lincoln. As an example of rhetorical artistry, the speech is a masterpiece, putting the brutality of slavery into historical, political, and theological perspective. Although the speech had deliberative effects--it grew…

  15. Applicability of fiber model in seismic response analysis for center-clamp type bushings on transformers

    International Nuclear Information System (INIS)

    A bushing is a device for insulation and support of a conductor. Especially it is called center-clamp type when it is connected with a metal holder through clamping force. As a consequence of damage of center-clamp type bushings in Tohoku Earthquake in 2011, refinement of the response analysis method and review of the seismic design procedure became necessary. In the present report, the fiber model, which can evaluate non-linear behavior in the section subjected to axial force and bending moment, was implemented to the CRIEPI's finite element analysis program 'Mastrd' considering following characteristics of center-clamp type bushings. a) The gasket section between a porcelain tube and a metal holder has a torus shape. b) Springs around the top of the bushing give clamping force, but they lock in excessive base rotation. c) The gasket does not resist against tension. d) Local resistance against compression due to bending increases in use of very thin gaskets. The developed program was verified through comparison with the shaking table test result for real bushings whose voltage classes were 154 kV and 275 kV. Deformation indices as rotation angle and base opening due to bending were influenced by damping conditions. Though there was not the condition which brought about remarkable underestimation, reduction of damping for a fiber model element was preferable for safety. On the other hand, bending moment was consistent with experimental results because it tended not to fluctuate in the non-linear region. (author)

  16. Regional Analysis of Precipitation by Means of Bivariate Distribution Adjusted by Maximum Entropy; Analisis regional de precipitacion con base en una distribucion bivariada ajustada por maxima entropia

    Energy Technology Data Exchange (ETDEWEB)

    Escalante Sandoval, Carlos A.; Dominguez Esquivel, Jose Y. [Universidad Nacional Autonoma de Mexico (Mexico)

    2001-09-01

    The principle of maximum entropy (POME) is used to derive an alternative method of parameter estimation for the bivariate Gumbel distribution. A simple algorithm for this parameter estimation technique is presented. This method is applied to analyze the precipitation in a region of Mexico. Design events are compered with those obtained by the maximum likelihood procedure. According to the results, the proposed technique is a suitable option to be considered when performing frequency analysis of precipitation with small samples. [Spanish] El principio de maxima entropia, conocido como POME, es utilizado para derivar un procedimiento alternativo de estimacion de parametros de la distribucion bivariada de valores extremos con marginales Gumbel. El modelo se aplica al analisis de la precipitacion maxima en 24 horas en una region de Mexico y los eventos de diseno obtenidos son comparados con los proporcionados por la tecnica de maxima verosimilitud. De acuerdo con los resultados obtenidos, se concluye que la tecnica propuesta representa una buena opcion, sobre todo para el caso de muestras pequenas.

  17. Magnetic Resonance Imaging in the evaluation of the pericardium. A pictorial essay; La Risonanza Magnetica nello studio del pericardio: tecnica di studio, anatomia e principali quadri patologici

    Energy Technology Data Exchange (ETDEWEB)

    Francone, Mario; Dymarkowski, Steven; Kalantzi, Maria; Bogaert, Jan [Katholieke Univ. Leuven, Leuven (Belgium). Department of Radiology

    2005-02-01

    spaziale e di contrasto e di una maggiore riproducibilita' dell'esame derivante dall'utilizzo di piani anatomici standard con significativa riduzione della dipendenza dell'operatore. La metodica diviene di utilita' fondamentale in tutti i casi in cui le informazioni ottenute con l'iniziale studio ecografico non siano sufficienti o risultino tecnicamente inadeguate: pazienti poco valutabili con ultrasuoni, piccole raccolte fluide in sede atipica, ispessimenti focali o masse sono usualmente ben individuate con maggiore accuratezza. La RM fornisce inoltre elementi diagnostici di grande utilita' per la diagnosi di pericardite costrittiva e per la differenziazione di questa condizione patologica della cardiomiopatia restrittiva. La RM fornisce inoltre elementi diagnostici di grande utilita' per la diagnosi di pericardite costrittiva e per la differenziazione di questa condizione patologica della cardiomiopatia restrittiva. La RM fornisce inoltre elementi diagnostici di grande utilita' per la diagnosi di pericardite costrittiva e per la differenziazione di questa condizione patologica della cardiomiopatia restrittiva. Scopo del presente lavoro e' di presentare il ruolo della RM nello studio del paziente con sospetta patologia del pericardio, illustrando la tecnica di studio, l'anatomia e i principali quadri patologici.

  18. Foreseeing techniques and control of emissions in thermal power plants. Workshop Latin American. [Selected Papers]; Control y tecnicas de prevision de las emisiones de centrales termoelectricas

    Energy Technology Data Exchange (ETDEWEB)

    Saldana, R.; Morales, F.; Urrutia, M. [eds.] [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1996-12-31

    This document contains the conference proceedings of the Latin-American Workshop ``Control and Prevision Techniques of Emissions in Power Plants`` carried out in Cuernavaca, Mexico on June 1996, with the participation of representatives of Argentina, Chile, Guatemala, Colombia, Ecuador, Mexico, Nicaragua, Panama and Venezuela, as well as specialists from the European Union. The core issue analyzed in this workshop was the control and the evaluation techniques of polluting emissions in Power Plants [Espanol] Este documento contiene las memorias de conferencia del Taller Latinoamericano ``Control y tecnicas de prevision de las emisiones de centrales termoelectricas`` que se llevo a cabo en Cuernavaca, Mexico en junio de 1996. Participaron representantes de Argentina, Chile, Guatemala, Colombia, Ecuador, Mexico, Nicaragua, Panama y Venezuela, asi como especialistas de la Union Europea. El tema central tratado en este taller fue el control y tecnicas de evaluacion de las emisiones contaminantes en centrales termoelectricas

  19. Electrochemical techniques application in corrosion problems of fossil power plants; Aplicacion de tecnicas electroquimicas en problemas de corrosion en centrales termoelectricas

    Energy Technology Data Exchange (ETDEWEB)

    Cano Castillo, Ulises; Garcia Ochoa, Esteban Miguel; Martinez Villafane, Alberto; Mariaca Rodriguez, Liboria; Malo Tamayo, Jose Maria; Uruchurtu Chavarin, Jorge [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1990-12-31

    Some aspects of the electrochemical techniques employed to evaluate the corrosion at low temperature in fossil power plants are commented, as well as the results obtained with the application of them in three power plants of this type. [Espanol] Se comentan algunos aspectos de tecnicas electroquimicas utilizadas para evaluar la corrosion en baja temperatura en centrales termoelectricas, asi como los resultados de la aplicacion de las mismas en tres centrales de este tipo.

  20. Ricostruzione di una scena urbana 3D utilizzando VisualSfM.

    Directory of Open Access Journals (Sweden)

    Laura Inzerillo

    2013-10-01

    Full Text Available Le tecniche di computer vision oggi danno la possibilità di costruire in maniera rapida e automatica modelli 3D dettagliati a partire da dataset fotografici. La comunità accademica ha visto una crescente attenzione alla ricostruzione 3D a scala urbana. Tra i vari strumenti oggi a disposizione spicca VisualSfM sviluppato dall’università di Washingthon e Google. Si tratta di una Interfaccia grafica open source strutturata in algoritmi dedicati alla tecnica di Structure from Motion (SfM. VisualSfM utilizza un estrattore di features chiamato SIFTGPU e un algoritmo di Bundle Adjustment Multicore. Inoltre è possibile ottenere una nuvola di punti densa utilizzando gli algoritmi CMVS/PMVS2. La finalità di questo studio è di verificare l’accuratezza metrica delle ricostruzioni attraverso l’utilizzo integrato di VisualSfM e CMVS/PMVS2. L’approccio quindi è stato testato su diversi dataset di una certa entità strutturati da collezioni fotografiche ragionate. 

  1. Research on the electrical insulation design of a bushing for a 154 kV class HTS transformer

    Energy Technology Data Exchange (ETDEWEB)

    Kwag, D.S.; Cheon, H.G.; Choi, J.H. [Department of Electrical Engineering, Gyeongsang National University and ERI, Jinju, Gyeongnam 660-701 (Korea, Republic of); Kim, S.H. [Department of Electrical Engineering, Gyeongsang National University and ERI, Jinju, Gyeongnam 660-701 (Korea, Republic of)], E-mail: shkim@gsnu.ac.kr

    2007-10-01

    The cryogenic high voltage bushing for a 154 kV/100 MVA high temperatures superconducting (HTS) transformer is described. The bushing is energized with the line-to-ground voltage between the coaxial center and outer surrounding conductors, in the axial direction there is a temperature difference between ambient and 77 K. Therefore, it has to endure for electrical insulation as well as the thermal contraction as well. In this research, the electrical insulation characteristics of GFRP to achieve high durability in the cryogenic environment were surveyed in the air and LN{sub 2}. Moreover, the insulation constructions of the commercial condenser type bushing were studied. Based on these data, the electrical insulation design of the cryogenic condenser type bushing for a 154 kV class HTS transformer was performed.

  2. Bush lubas al-Zarqawi järglase kinni püüda / Aadu Hiietamm

    Index Scriptorium Estoniae

    Hiietamm, Aadu, 1954-

    2006-01-01

    USA president George W. Bush teatas, et tapetud terrorivõrgustiku al Qaeda Iraagi haru liidri Abu Musab al-Zarqawi järglaseks nimetatud Abu Hamsa al-Muhajir on kuulutatud enim tagaotsitavaks terroristiks

  3. Research on the electrical insulation design of a bushing for a 154 kV class HTS transformer

    International Nuclear Information System (INIS)

    The cryogenic high voltage bushing for a 154 kV/100 MVA high temperatures superconducting (HTS) transformer is described. The bushing is energized with the line-to-ground voltage between the coaxial center and outer surrounding conductors, in the axial direction there is a temperature difference between ambient and 77 K. Therefore, it has to endure for electrical insulation as well as the thermal contraction as well. In this research, the electrical insulation characteristics of GFRP to achieve high durability in the cryogenic environment were surveyed in the air and LN2. Moreover, the insulation constructions of the commercial condenser type bushing were studied. Based on these data, the electrical insulation design of the cryogenic condenser type bushing for a 154 kV class HTS transformer was performed

  4. Bush Blitz aids description of three new species and a new genus of Australian beeflies (Diptera, Bombyliidae, Exoprosopini)

    OpenAIRE

    Christine Lambkin; Justin Bartlett

    2011-01-01

    Bush Blitz is a three-year multimillion dollar program to document the plants and animals in hundreds of properties across Australia’s National Reserve System. The core focus is on nature discovery – identifying and describing new species of plants and animals. The Bush Blitz program has enabled the collection and description of beeflies (Diptera, Bombyliidae) from surveys in Western Australia and Queensland. Three new species of Australian beeflies belonging to the Exoprosopini a...

  5. Harmonic amplitude dependent dynamic stiffness of hydraulic bushings: Alternate nonlinear models and experimental validation

    Science.gov (United States)

    Fredette, Luke; Dreyer, Jason T.; Rook, Todd E.; Singh, Rajendra

    2016-06-01

    The dynamic stiffness properties of automotive hydraulic bushings exhibit significant amplitude sensitivity which cannot be captured by linear time-invariant models. Quasi-linear and nonlinear models are therefore proposed with focus on the amplitude sensitivity in magnitude and loss angle spectra (up to 50 Hz). Since production bushing model parameters are unknown, dynamic stiffness tests and laboratory experiments are utilized to extract model parameters. Nonlinear compliance and resistance elements are incorporated, including their interactions in order to improve amplitude sensitive predictions. New solution approximations for the new nonlinear system equations refine the multi-term harmonic balance term method. Quasi-linear models yield excellent accuracy but cannot predict trends in amplitude sensitivity since they rely on available dynamic stiffness measurements. Nonlinear models containing both nonlinear resistance and compliance elements yield superior predictions to those of prior models (with a single nonlinearity) while also providing more physical insight. Suggestion for further work is briefly mentioned.

  6. Earthquake Response and Isolation Layer Parameter Effect of Seismic Isolation Systems of Transformers With Bushings

    Institute of Scientific and Technical Information of China (English)

    CAO Meigen; ZHOU Fulin; TAN Ping; ZHANG Guangping; GAO Zhengguo

    2012-01-01

    Seismic damage data and experiences on power transformers at home and abroad indicate that the destruction type of high-power transformers is various and the vulnerability is very high. Furthermore, the post-disaster reconstruction of transformers, which needs a long recovery cycle and a high cost, will be very difficult. Studies have shown that the acceleration response of the transformer and bushings will be quickly reduced and seismic reliability of transformer will be improved because there is one seismic isolation layer between the bottom of transformer tank and the base which form the seismic isolation system of the transformer and bushings (SISTB). But isolation layer design and parameters selection of SISTB have larger difference with general structures.

  7. Reproducing American Identity from Bush to Obama - A Comparative Discourse Analysis of the War on Terror

    OpenAIRE

    Schmidt Hansen, Pernille

    2012-01-01

    Through a discourse analysis of American foreign policy, this rapport examines the development in American identity reproduction from George W. Bush to Barack Obama. Historically, American self-narrative, influenced by Wilsonianism, has reproduced America as a ‘crusader nation’. Along with a poststructuralist perspective, adopted from David Campbell, and employing the case of the war on terror to exemplify the construction of ‘danger’, this rapport seeks to support the thesis that Americ...

  8. Superheroes and the Bush doctrine: narrative and politics in post­-9/11 discourse

    OpenAIRE

    Hassler-Forest, D.A.

    2011-01-01

    Dan Hassler-Forest onderzocht de manier waarop de Amerikaanse politiek samenvloeit met populaire cultuur. De centrale figuur hierin is de superheld, die fungeert als een symbolische belichaming voor de conflicterende fantasieën die de jaren van het presidentschap van George W. Bush in de Verenigde Staten typeren. Hassler-Forest stelt dat het onderscheid tussen feit en fictie, nieuws en vermaak, en authentiek en virtueel in het tijdperk dat volgde op de aanslagen van 11 september 2001 steeds m...

  9. Electronic BushBroker exchange: Designing a combinatorial double auction for native vegetation offets

    OpenAIRE

    Nemes, Veronika; Plott, Charles R.; Stoneham, Gary

    2008-01-01

    In Victoria, Australia individuals or firms wishing to proceed with development that involves the clearing of native vegetation are required to obtain an offset to replace the vegetation destroyed. This paper focuses on the design and testing of the electronic BushBroker exchange and the evaluation of alternative market institutions, while briefly describing the metric, trading rules and contracts used in the Victorian native vegetation offset scheme. The purpose of the design is to fac...

  10. Foreign Policy Implication by Bush and Obama Administration towards Middle East

    OpenAIRE

    Uddin, S. M. Anowar; Mariera, John Omonywa

    2009-01-01

    The rationale of this paper is to analyze and assess the implication of foreign policy towards Middle East after September 11. Confrontational and co operational approaches adopted by the former and current U.S presidents Bush and Obama respectively, it is critical for all to understand that either way, the role the United States has played and will play cannot be underrated. Both approached seems to attract negative and positive implications both at home and in the Middle East. How the forei...

  11. Territory Tenure Increases with Repertoire Size in Brownish-Flanked Bush Warbler

    OpenAIRE

    Xia, Canwei; Wei, Chentao; Zhang, Yanyun

    2015-01-01

    Song repertoire size is often cited as a classic example of a secondary sexual trait in birds. Models of sexual selection and empirical tests of their predictions have often related secondary sexual traits to longevity. However, the relationship between repertoire size and longevity is unclear. Using capture-mark-recapture studies in two populations of the brownish-flanked bush warbler Cettia fortipes, we found that males with a repertoire size of three maintained territory tenure for a longe...

  12. Electromagnetic Field Emission From Gas-to-Air Bushing in a GIS During Switching Operations

    OpenAIRE

    Rao, Mohana M; Thomas, Joy M; Singh, BP

    2007-01-01

    Very fast transient overvoltages (VFTOs) and the associated very fast transient currents (VFTCs) generated during switching operations in a gas-insulated substation (GIS) radiate electromagnetic (EM) fields, which in turn can leak into the external environment through apertures like $SF_6$ gas-to-air bushing. Therefore, it becomes necessary to characterize and quantify the EM fields when sensitive control devices are used for the operation of such substations. Keeping this in view, a numerica...

  13. The American Christian Right and George W. Bush's Foreign Policy Towards Sudan

    OpenAIRE

    AFANDISALLEH, Mohd; ABU-HUSSIN, Mohd Fauzi; MOHAMED, Abdul Majid Hafız

    2013-01-01

    The paper explores the role and activities of the American Christian Right in pursuing its interest in Sudan during the George W. Bush administration . The campaign for global religious freedom and subsequently the introduction of the International Religious Freedom Act (IRFA) in 1998 has stimulated the Christian Right movement to become more focused on broader US foreign policy especially international humanitarian issues in Sudan. Consequently, the Christian Right was seen to successfully r...

  14. Penerapan Metode DMAIC dalam Peningkatan Acceptance Rate untuk Ukuran Panjang Produk Bushing

    OpenAIRE

    Ferdian Hartoyo; Yudha Yudhistira; Andry Chandra; Ho Hwi Chie

    2013-01-01

    Bushing is one of the eminent product of PT Indokarlo Mighty. The company requires some suppliers of iron cutting services to continue providing high qualified raw materials. The quality is the accuracy of the intended length of the products which is able to meet the requirements of the requested length. The purpose of this study is to determine what factors caused the defect on the length of the products. In addition, it is objected to provide appropriate solutions to eliminate t...

  15. Biology of flowering and nectar production in the flowers of the beauty bush (Kolkwitzia amabilis Graebn.

    Directory of Open Access Journals (Sweden)

    Marta Dmitruk

    2012-12-01

    Full Text Available Nectar production and the morphology of the nectary and pollen grains of Kolwitzia amabilis Graebn. were studied during the period 2008–2009 and in 2011. The blooming of beauty bush flowers started in the third decade of May and ended in the middle of June; flowering lasted 22–23 days. The flower life span was 4–5 days. Nectar production began at the bud break stage. The tube of the corolla in beauty bush flowers forms a spur inside which the nectary is located. The secretory surface of the nectary consists of two layers of glandular epidermal outgrowths: unicellular trichomes, with their length ranging 54.6 μm – 70.2 μm, and papillae with a length of 13.0 μm – 20.6 μm. The mean weight of nectar per 10 flowers, determined for the three years of the study, was 8.6 mg, with a sugar concentration of 50.8%. The weight of nectar sugar was on average 4.4 mg. In terms of the size, beauty bush pollen grains are classified as medium-sized. These are tricolporate grains.

  16. Research of on-line monitoring method for insulation condition of power transformer bushing

    Science.gov (United States)

    Xia, Jiuyun; Qian, Zheng; Yu, Hao; Yao, Junda

    2016-01-01

    The power transformer is the key equipment of the power system; its insulation condition will directly influence the security and reliability of the power system. Thus, the on-line monitoring of power transformer is urgently required in order to guarantee the normal operation of the power system. Moreover, the dielectric loss factor is a significant parameter reflecting the condition of transformer bushing, so the on-line measurement of dielectric loss factor is really important. In this paper, the phase-to-phase comparison method is selected as the on-line monitoring method based on the overall analysis and discussion of the existing on-line monitoring methods. At first, the harmonic analysis method is utilized to calculate the dielectric loss of each phase of the three-phase transformer bushing, and then the differences of dielectric loss between every two phases are calculated and analyzed. So the insulation condition of each bushing could be achieved based on the careful analysis of different phase-to-phase dielectric loss. The simulation results of phase-to-phase comparison method are carried out in this paper, and the validity is verified. At last, this method is utilized in an actual equipment of on-line monitoring.

  17. Accumulation of atmospheric deposition of As, Cd and Pb by bush bean plants

    International Nuclear Information System (INIS)

    Bush bean (Phaseolus vulgaris) was exposed to atmospheric deposition of As, Cd and Pb in a polluted and a reference area. The atmospheric deposition of these elements was significantly related to the concentrations in leaves, stems and pods at green harvest. Surprisingly there was also a clear relation for As and Pb in the seeds at dry harvest, even though these seeds were covered by the husks. Root uptake of accumulated atmospheric deposits was not likely in such a short term experiment, as confirmed by the fact that soil pore water analysis did not reveal significant differences in trace element concentrations in the different exposure areas. For biomonitoring purposes, the leaves of bush bean are the most suitable, but also washed or unwashed pods can be used. This means that the obtained relationships are suitable to estimate the transfer of airborne trace elements in the food chain via bush bean. - Highlights: • Atmospheric deposition of trace elements accumulates in bean leaves, stems and pods. • Also thoroughly washed green pods are suitable for biomonitoring. • Even the non-exposed bean seeds accumulate As and Pb deposits to some extend. • A migration of trace elements from the husks to the seeds is most likely. - In a polluted area, atmospheric deposition of trace elements on the above-ground plant parts is influencing their concentration, even in the seeds

  18. Bush animal attacks: management of complex injuries in a resource-limited setting

    Directory of Open Access Journals (Sweden)

    Mitchell Katrina B

    2011-12-01

    Full Text Available Abstract Introduction Though animal-related injuries and fatalities have been documented throughout the world, the variety of attacks by wild animals native to rural East Africa are less commonly described. Given the proximity of our northwestern Tanzania hospital to Lake Victoria, Lake Tanganyika, and the Serengeti National Park, and presentation of several patients attacked by bush animals and suffering a variety of complex injuries, we sought to report the pattern of attacks and surgical management in a resource-limited setting. Materials and methods Four patients who were admitted to the northwestern Tanzania tertiary referral hospital, Bugando Medical Centre (BMC, in 2010-2011 suffered attacks by different bush animals: hyena, elephant, crocodile, and vervet monkey. These patients were triaged as trauma patients in the Casualty Ward, then admitted for inpatient monitoring and treatment. Their outcomes were followed to discharge. Results The age and gender of the patients attacked was variable, though all but the pediatric patient were participating in food gathering or guarding activities in rural locations at the time of the attacks. All patients required surgical management of their injuries, which included debridement and closure of wounds, chest tube insertion, amputation, and external fixation of an extremity fracture. All patients survived and were discharged home. Discussion Though human injuries secondary to encounters with undomesticated animals such as cows, moose, and camel are reported, they often are indirect traumas resulting from road traffic collisions. Snake attacks are well documented and common. However, this series of unique bush animal attacks describes the initial and surgical management of human injuries in the resource-limited setting of the developing world. Conclusion Animal attacks are common throughout the world, but their pattern may vary in Africa throughout jungle and bush environmental settings. It is

  19. Online Partial Discharge Measurement of a High-voltage Direct Current Converter Wall-bushing%Online Partial Discharge Measurement of a High-voltage Direct Current Converter Wall-bushing

    Institute of Scientific and Technical Information of China (English)

    Nathan D. Jacob; William M. McDermid; Behzad Kordi

    2011-01-01

    An online partial discharge (PD) measurement performed on a high voltage direct current (HVDC) wall bushing successfully identified the presence of internal discharges. The wall bushing is a sulfur hexafluoride gas-insu- lated bushing, rated for 500 kV dc and terminated on a thyristor-controlled HVDC converter bridge. The measure- ment of PD within the HVDC station environment is particularly challenging due to the high levels of electromagnetic noise caused by thyristor switching events and external air-corona from the neighboring high-voltage equipment. An additional challenge is the "mixed" voltage stress on the bushing insulation, which has both ac and dc high-voltage components. There are also fast transients during the firing of thyristors in the HVDC conversion process that cause added stress to the insulation. As a result, the analysis and interpretation of PD data for HVDC equipment is more complex; PD pulses may occur in response to the ac, dc, or switching transient voltage stresses. In this paper, an on- line PD measurement strategy for noise filtering and isolation of PD sources within the bushing are discussed. The PD measurement data is plotted on a phase-resolved diagram where the line supply power cord voltage was used as a reference. The phase-resolved diagram appears to suggest that the fast transients, caused during switching, trigger some PD events. Measurements were also performed with the aid of a modern PD measurement instrument having noise separation capabilities. The findings from the online PD measurements are verified with physical evidence, found after the bushing was removed from service, suggested internal PD had occurred inside the bushing.

  20. Una Medicion de la Pobreza: Un Enfoque Complementario para el Caso Colombiano

    Directory of Open Access Journals (Sweden)

    Sinisterra Paz Gullermo A.

    2003-08-01

    Full Text Available

    Sinisterra Paz, Guillermo A. " Una Medicion de la Pobreza: Un Enfoque Complementario para el Caso Colombiano" , Cuadernos de Economia, V. XXII , n. 38, Bogotá, 2003, paginas 127 - 150.

    En la literatura sobre la pobreza es cada vez mas aceptada la perspectiva sociologica de privaciones relativas, entendida como los los sentimientos de frustacion que tienen las personas al interior de la sociedad, al no tener acceso a las oportunidades que si son viables para otros. A partir de esto se han estructurado varios modelos que buscan medir dicha definicion de pobreza desde el punto de vista de la teoria economica. Se busca dar una vision complementaria a la forma de calcular la pobreza en Colombia, ultilizando el concepto de privaciones relativas, que es mucho mas rico en informacion que los conceptos normalmente utilizados, esto permite diagnosticar mejor quienes son pobres y quienes no lo son. Ademas, son aproximacimaciones que han sido tomadas por lo general en los paises desarrollados. Se utilizo una aproximacion econometrica a la definicion de la pobreza basada en tecnicas de analisis de secciones  transversales.

  1. Eficiencia tecnica y estacionalidad en los procesos de tratamiento de aguas residuales

    Directory of Open Access Journals (Sweden)

    Ramon Sala-Garrido

    2008-01-01

    Full Text Available El análisis de la eficiencia técnica en las plantas de tratamiento de aguas residuales esun fenómeno de creciente actualidad. Son muchas las razones que justifican la necesidad deconocer en detalle las posibles ineficiencias existentes en los procesos de tratamiento. El uso demodelos DEA (Data Envelopment Analysis en este campo ofrece grandes posibilidades conrespecto a la identificación y el conocimiento detallado de los factores que determinan laeficiencia de una planta. La obtención de indicadores de eficiencia asociados a cada uno de losinputs utilizados en el proceso resulta de gran utilidad. Una de las variables que influye en elcomportamiento eficiente de los procesos de tratamiento es la estacionalidad en los flujos.Aunque resulta difícil la cuantificación de esta influencia, en este trabajo se presenta unametodología que permite abordar los efectos de la estacionalidad a través de un análisis detolerancias asociado a los índices de eficiencia técnica. Se lleva a cabo una aplicación empíricapara una muestra de plantas de tratamiento existentes en la Comunidad Valenciana.

  2. Design and development of CRIO based data acquisition and control system for high voltage bushing experiment

    International Nuclear Information System (INIS)

    In Diagnostic Neutral Beam (DNB), High Voltage (HV) bushing is an interface between the HV transmission line and Beam source. For validating the design of HVB of DNB, a scaled down configuration of the Bushing is fabricated, referred to as PHVB and assembled. This PHVB is to be subjected to long duration HV tests up to 60 kV under vacuum conditions for verifying the voltage holding capacity of the bushing. For automating the entire experimental process of HVB experiment and acquiring important experimental data up to 3600 sec for post analysis, a dedicated Data Acquisition and Control System (DACS) is required. This will help in understanding the behavior of the PHVB in High voltage and vacuum environment. Also it is required that high speed breakdown events are monitored. CRIO (compact reconfigurable input output) is a rugged, small sized hardware platform which combines the power of real time processor and FPGA bus. It is becoming an upcoming standard for medium sized experiment. For ensuring smooth control operation of the experiment; NI CRIO was selected as the controller for DACS. In this experiment the CRIO provides a user interface for setting of important control set points of power supply and vacuum system. Also it provides seamless control and acquisition for pulse durations of up to 3600 sec. The voltage signal is generated as a ramp signal with upper voltage set point. The ramp rate applied is 1.5 kV/min and is user configurable. The testing of PHVB has been successfully completed using the developed DACS. In this paper the technical details of DACS design, implementation and test results shall be discussed. (author)

  3. Rose bush leaf and internode expansion dynamics: analysis and development of a model capturing interplant variability

    Directory of Open Access Journals (Sweden)

    Sabine eDemotes-Mainard

    2013-10-01

    Full Text Available Bush rose architecture, among other factors, such as plant health, determines plant visual quality. The commercial product is the individual plant and interplant variability may be high within a crop. Thus, both mean plant architecture and interplant variability should be studied. Expansion is an important feature of architecture, but it has been little studied at the level of individual organs in bush roses. We investigated the expansion kinetics of primary shoot organs, to develop a model reproducing the organ expansion of real crops from non destructive input variables. We took interplant variability in expansion kinetics and the model’s ability to simulate this variability into account. Changes in leaflet and internode dimensions over thermal time were recorded for primary shoot expansion, on 83 plants from three crops grown in different climatic conditions and densities. An empirical model was developed, to reproduce organ expansion kinetics for individual plants of a real crop of bush rose primary shoots. Leaflet or internode length was simulated as a logistic function of thermal time. The model was evaluated by cross-validation. We found that differences in leaflet or internode expansion kinetics between phytomer positions and between plants at a given phytomer position were due mostly to large differences in time of organ expansion and expansion rate, rather than differences in expansion duration. Thus, in the model, the parameters linked to expansion duration were predicted by values common to all plants, whereas variability in final size and organ expansion time was captured by input data. The model accurately simulated leaflet and internode expansion for individual plants (RMSEP = 7.3% and 10.2% of final length, respectively. Thus, this study defines the measurements required to simulate expansion and provides the first model simulating organ expansion in rosebush to capture interplant variability.

  4. Control of the bush tick (Haemaphysalis longicornis) with Zebu x European cattle.

    Science.gov (United States)

    Dicker, R W; Sutherst, R W

    1981-02-01

    Brahman x Hereford cattle carried only one-quarter as many engorging adult bush ticks (Haemaphysalis (Kaiseriana) longicornis) as Hereford. Simmental x Hereford or Friesian x Hereford cattle when grazed together on the north coast of New South Wales. Fourteen percent of a Brahman x Hereford herd carried half of the engorging ticks suggesting that infestation levels would be further reduced by culling procedures. The results indicate an additional advantage to those already established for Brahman x Hereford cattle on the north coast of New South Wales and have important implications for tick control. PMID:7259646

  5. The Relationship Between Morphological Symmetry and Immune Response in Wild-Caught Adult Bush-Crickets

    Directory of Open Access Journals (Sweden)

    Åsa Berggren

    2009-09-01

    Full Text Available Despite interest in the relationship between fluctuating asymmetry (FA, immune response and ecological factors in insects, little data are available from wild populations. In this study we measured FA and immune response in 370 wild-caught male bush-crickets, Metrioptera roeseli, from 20 experimentally introduced populations in southern-central Sweden. Individuals with more-symmetric wings had a higher immune response as measured by the cellular encapsulation of a surgically-implanted nylon monofilament. However, we found no relationship between measures of FA in other organs (i.e. tibia and maxillary palp and immune response, suggesting that this pattern may reflect differing selection pressures.

  6. Between Ground Zero and square one : how George W. Bush failed on Russia

    OpenAIRE

    Spanger, Hans-Joachim

    2007-01-01

    'Die Beziehungen zwischen Washington und Moskau sind am Ende der Amtszeit von George W. Bush wieder dort angelangt, wo sie einst gestartet waren: im 'Kalten Krieg'. Die Raketenabwehr, das Kosovo und die Demokratie in Russland sind nur einige der Themen, bei denen beide Seiten scheinbar unüberbrückbare Differenzen aufweisen. Der Report untersucht, wie es dazu kam. Er zeigt auf, wie die Chance einer umfassenden Verständigung nach dem 11. September von den USA verspielt wurde, weil Russland zwar...

  7. Zwischen Ground Zero und Square One : George W. Bush und die Folgen der Simulation amerikanischer Russlandpolitik

    OpenAIRE

    Spanger, Hans-Joachim

    2007-01-01

    'Die Beziehungen zwischen Washington und Moskau sind am Ende der Amtszeit von George W. Bush wieder dort angelangt, wo sie einst gestartet waren: im 'Kalten Krieg'. Die Raketenabwehr, das Kosovo und die Demokratie in Russland sind nur einige der Themen, bei denen beide Seiten scheinbar unüberbrückbare Differenzen aufweisen. Der Report untersucht, wie es dazu kam. Er zeigt auf, wie die Chance einer umfassenden Verständigung nach dem 11. September von den USA verspielt wurde, weil Russland zwar...

  8. Measurement and control techniques for electric equipment development; Tecnicas de medicion y control para el desarrollo de equipos electricos

    Energy Technology Data Exchange (ETDEWEB)

    Ruiz Neblina, Joaquin [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1987-12-31

    In broad outlines the measuring and control techniques that are used in the electric equipment development in the short circuit laboratories, are described. In this article the utilization criteria of the traditional and modern (analogical and digital) instruments are described as well as the tendency towards the system`s integration for the automation of the measurement and control processes. Also, mention is made of the systems currently being developed at the Instituto de Investigaciones Electricas (IIE) to be applied at the Short Circuit Laboratories of Comision Federal de Electricidad (CFE) and of the IIE. [Espanol] Se describen a grandes rasgos las tecnicas de medicion y control que se emplean para el desarrollo de equipos electricos en los laboratorios de corto circuito. En este articulo se describen los criterios de utilizacion de los instrumentos tradicionales y modernos (analogicos y digitales), asi como la tendencia hacia la integracion de sistemas para la automatizacion de los procesos de medicion y control. Tambien se mencionan los sistemas que actualmente se desarrollan en el Instituto de Investigaciones Electricas (IIE) para aplicarlos en los Laboratorios de Corto Circuito de la Comision Federal de Electricidad (CFE) y del Instituto.

  9. The event bush as a semantic-based numerical approach to natural hazard assessment (exemplified by volcanology)

    Science.gov (United States)

    Pshenichny, C. A.; Nikolenko, S. I.; Carniel, R.; Vaganov, P. A.; Khrabrykh, Z. V.; Moukhachov, V. P.; Akimova-Shterkhun, V. L.; Rezyapkin, A. A.

    2009-05-01

    The event bush is a new formalism for organizing knowledge in various fields of geoscience, particularly suitable for hazard assessment purposes. Acting as an intermediary between expert knowledge and the well-established field of Bayesian belief networks, the event bush allows at the same time a variety of other applications, linking geoscientific knowledge to the field of artificial intelligence and uniting probabilistic, deterministic, and fuzzy approaches. In this paper, we present basic principles, mathematical formulation, guidelines for application, and examples, including the connection with Bayesian belief networks. Further development of the method will include spatial and temporal modelling, implementation in mapping in GIS medium, formalization by means of predicate logic, definition of variable states in BBNs by membership functions based on the event bush semantics, and other applications.

  10. BUSH: A computer code for calculating steady state heat transfer in LWR rod bundles under accident conditions

    International Nuclear Information System (INIS)

    The computer code BUSH has been developed for the calculation of steady state heat transfer in a rod bundle. For a given power, flow and geometry it can calculate the temperatures in the rods, coolant and shroud assuming that at any axial level each rod can be described by one temperature and the coolant fluid is also radially uniform at this level. Heat transfer by convection and radiation are handled and the geometry is flexible enough to model nearly all types of envisaged shroud design for the SUPERSARA test series. The modular way in which BUSH has been written makes it suitable for future development, either within the present BUSH framework or as part of a more advanced code

  11. Sorveglianza della matrice di varianze e covarianze di un portafoglio efficiente tramite la tecnica lasso

    OpenAIRE

    Gallotti,

    2014-01-01

    Nel mercato finanziario, la scelta ottimale di un portafoglio azionario ha come scopo principale quello di allocare nel miglior modo possibile le risorse a propria disposizione, massimizzando una funzione di utilità che prenda in considerazione sia il rendimento atteso (da massimizzare, a parità di rischio) sia il rischio di investimento (da minimizzare, a parità di rendimento), oppure entrambi gli aspetti simultaneamente. L’idea della tesi trae origine dal concetto di “sorveglianza statis...

  12. Ilves ja Bush - üks rantšopidajast president kutsus teise külla / Krister Paris

    Index Scriptorium Estoniae

    Paris, Krister

    2007-01-01

    USA presidendi George W. Bushi kohtumisest president Toomas Hendrik Ilvesega. Kõne all oli viisavabadus ja NATO küberkaitsekeskuse loomine Eestisse. G.W. Bush avaldas kaastunnet Afganistanis hukkunud Eesti sõdurite omastele. Riigikogu liikmete Marko Mihkelsoni ja Sven Mikseri kommentaarid presidentide kohtumisele. Vt. samas: Esimene riigipea pärjaga. T.H. Ilves asetas pärja kommunismiohvrite mälestusmärgile, mille president G.W. Bush avas 12. juunil 2007. Vabariigi President töövisiidil Ameerika Ühendriikides 25.-26.06.2007

  13. In his attacks on Jeb Bush, Donald Trump has stolen a page from Karl Rove’s playbook

    OpenAIRE

    Trubowitz, Peter

    2016-01-01

    In last week’s 8th Republican Party debate, Donald Trump attacked Jeb Bush by blaming his brother, George W. Bush for 9/11 and for the invasion of Iraq in 2003. US Centre Director Peter Trubowitz, writes that while Trump’s attack on Bush’s foreign policy is virtually unprecedented for a Republican, such tactics can trace their roots back to the strategy of George W. Bush’s political adviser Karl Rove, who argued that the best way to for politicians to defeat their opponents is to ...

  14. SOLUTION TO THE STRESS DISTRIBUTION ON THE SURFACE LAYER OF BUSHING ALLOY BY COUPLING BEM WITH ELASTICITY METHOD

    Institute of Scientific and Technical Information of China (English)

    范迅; 孟惠荣

    1994-01-01

    In the design of the fatigue strength of dynamically loaded bearing in the equipments such as internal combustion engines and roiling mills, the solution to the stress distribution on the bushing alloy layer is an important and difficult problem. In this paper, a new method has been proposed by coupling BEM with elasticity method. The algorithm and its implementation were described in details. The calculation results verify that this up-dated method can provide us a more simple and effective tool for solvingtbe fatigue stress of the bushing alloy with tangible benefit of time-saving and high computation accuracy'. It may open a new vista in bearing fatigue strength design.

  15. Effects of high fire frequency in creosote bush scrub vegetation of the Mojave Desert

    Science.gov (United States)

    Brooks, M.L.

    2012-01-01

    Plant invasions can increase fire frequency in desert ecosystems where fires were historically infrequent. Although there are many resource management concerns associated with high frequency fire in deserts, fundamental effects on plant community characteristics remain largely unstudied. Here I describe the effects of fire frequency on creosote bush scrub vegetation in the Mojave Desert, USA. Biomass of the invasive annual grass Bromus rubens L. increased following fire, but did not increase further with additional fires. In contrast, density, cover and species richness of native perennial plants each decreased following fire and continued to decrease with subsequent fires, although not as dramatically as after the initial fire. Responses were similar 5 and 14 years post-fire, except that cover of Hymenoclea salsola Torr. & A. Gray and Achnatherum speciosa Trin. & Rupr. both increased in areas burnt once. These results suggest that control of B. rubens may be equally warranted after one, two or three fires, but revegetation of native perennial plants is most warranted following multiple fires. These results are valid within the scope of this study, which is defined as relatively short term vegetation responses (???14 years) to short fire return intervals (6.3 and 7.3 years for the two and three fire frequency levels) within creosote bush scrub of the Mojave Desert. ?? 2012 IAWF.

  16. Fluid technologies: The Bush Pump, the LifeStraw and microworlds of humanitarian design.

    Science.gov (United States)

    Redfield, Peter

    2016-04-01

    Over the past decade, many ingenious, small-scale gadgets have appeared in response to problems of disaster and extreme poverty. Focusing on the LifeStraw, a water filtration device invented by the company Vestergaard Frandsen, I situate this wave of humanitarian design relative to Marianne de Laet and Annemarie Mol's classic article on the Zimbabwe Bush Pump. The LifeStraw shares the Bush Pump's principle of technical minimalism, as well as its ethical desire to improve the lives of communities. Unlike the pump, however, the straw defines itself through rather than against market logic, accepting the premise that one can 'do well while doing good'. Moreover, it does not share the assumed framework of de Laet and Mol's Zimbabwean socio-technical landscape: a postcolonial state happily en route to national self-definition. Nonetheless, it clearly embodies moral affect, if in the idiom of humanitarian concern rather than development. My aim is to open up three interrelated lines of inquiry for discussion. First, I consider aspects of a postcolonial condition at the micro-level of immediate needs, including assumptions about nation-state politics and markets. Second, I emphasize science and technology in the form of infrastructure, the material frontline of norms. Third, I return reflexively to love, and the complicated allure of engagement in academic work. PMID:27263235

  17. Evaluation of Athrixia bush tea for cytotoxicity, antioxidant activity, caffeine content and presence of pyrrolizidine alkaloids.

    Science.gov (United States)

    McGaw, L J; Steenkamp, V; Eloff, J N

    2007-03-01

    In South Africa, Athrixia phylicoides DC. (bush tea) is widely used as a beverage, cough remedy and purgative. The commercialization of this tea in a similar vein to rooibos (Aspalathus linearis), is being considered. Traditional infusions and decoctions, as well as water and ethanol extracts, were prepared and screened. A related species, Athrixia elata Sond. (daisy tea), was included in many of the assays as a comparison. Extracts of Athrixia phylicoides and Athrixia elata were tested for toxic effects to brine shrimp larvae and the Vero kidney cell line. In both assays, the traditional preparations and aqueous extracts had little effect, but the ethanol extracts were relatively toxic. Antioxidant activity comparable to that found in rooibos was established. No detectable levels of caffeine were present in the Athrixia extracts following analysis using TLC and I/HCl spray reagent. Neither screening using spectrophotometry nor confirmation using gas chromatography-mass spectrometry analyses showed evidence of pyrrolizidine alkaloids in Athrixia phylicoides. Although a wider range of studies needs to be conducted prior to commercialization, these results support the development of bush tea as a healthy alternative to caffeine-containing beverages. PMID:17045437

  18. Sliding Wear Response of a Bronze Bushing: Influence of Applied Load and Test Environment

    Science.gov (United States)

    Prasad, B. K.

    2012-10-01

    This investigation pertains to the examination of the sliding wear behavior of a leaded-tin bronze bushing under the conditions of varying applied loads and test environments against a steel shaft. The test environment was changed by adding 5% of solid lubricants like talc and lead to an oil lubricant separately as well as in combination; the fraction of the two (solid) lubricants within the solid lubricant mixture was varied in the range of 25-75% in the latter case. The wear performance of the bushing was characterized in terms of the wear rate, frictional heating, and friction coefficient. The increasing load led to deterioration in the wear response, while the addition of the solid lubricant particles produced a reverse effect. Further, an appreciable difference in the wear behavior was not observed when the tests were conducted in the oil plus talc and oil plus lead lubricant mixtures. However, the oil containing lead and talc together brought about a significant improvement in the wear response; best results were obtained in the case of the lubricant mixture consisting of lead and talc together in the ratio of 3:1 in the oil. The observed wear behavior of the samples has been discussed in terms of specific characteristics of various microconstituents. The features of the wear surfaces and subsurface regions further substantiated the wear response and enabled us to understand the operating material removal mechanisms.

  19. Design optimization of the 100 kV HV bushing for ITER-DNB

    International Nuclear Information System (INIS)

    The 100 kV bushing of the Diagnostic Neutral Beam (DNB) injector is a cylindrical feedthrough which forms the interface between the gas insulated transmission line and the torus primary vacuum and provides all necessary services to the beam source. All conventions for safety, voltage holding requirement, vacuum compatibility and the choice of materials have been addressed in the design. Finite Element Analyses (FEAs) for the electrostatic and the structural configuration is carried out to validate the design of the High Voltage Bushing (HVB). Several iterations and optimizations of the stress shields are carried out to meet electrostatic criteria, especially at the triple point (the ceramic, metal and vacuum joint), which is critical for good voltage holding. Structural analyses is carried out to assess the stress distribution in the fiber reinforced plastic insulator, the alumina insulator and the integrated HVB for different load cases like operational orientation (horizontal), normal operation and accidental case. Design is further validated for seismic conditions for Seismic Loading-2 (SL-2).

  20. Environmental geophysics at the Southern Bush River Peninsula, Aberdeen Proving Ground, Maryland

    Energy Technology Data Exchange (ETDEWEB)

    Davies, B.E.; Miller, S.F.; McGinnis, L.D. [and others

    1995-05-01

    Geophysical studies have been conducted at five sites in the southern Bush River Peninsula in the Edgewood Area of Aberdeen Proving Ground, Maryland. The goals of the studies were to identify areas containing buried metallic objects and to provide diagnostic signatures of the hydrogeologic framework of the site. These studies indicate that, during the Pleistocene Epoch, alternating stands of high and low sea level resulted in a complex pattern of channel-fill deposits. Paleochannels of various sizes and orientations have been mapped throughout the study area by means of ground-penetrating radar and EM-31 techniques. The EM-31 paleochannel signatures are represented onshore either by conductivity highs or lows, depending on the depths and facies of the fill sequences. A companion study shows the features as conductivity highs where they extend offshore. This erosional and depositional system is environmentally significant because of the role it plays in the shallow groundwater flow regime beneath the site. Magnetic and electromagnetic anomalies outline surficial and buried debris throughout the areas surveyed. On the basis of geophysical measurements, large-scale (i.e., tens of feet) landfilling has not been found in the southern Bush River Peninsula, though smaller-scale dumping of metallic debris and/or munitions cannot be ruled out.

  1. Glaciations, gradients, and geography: multiple drivers of diversification of bush frogs in the Western Ghats Escarpment.

    Science.gov (United States)

    Vijayakumar, S P; Menezes, Riya C; Jayarajan, Aditi; Shanker, Kartik

    2016-08-17

    The historical processes underlying high diversity in tropical biodiversity hotspots like the Western Ghats of Peninsular India remain poorly understood. We sampled bush frogs on 13 massifs across the Western Ghats Escarpment and examined the relative influence of Quaternary glaciations, ecological gradients and geological processes on the spatial patterns of lineage and clade diversification. The results reveal a large in situ radiation (more than 60 lineages), exhibiting geographical structure and clade-level endemism, with two deeply divergent sister clades, North and South, highlighting the biogeographic significance of an ancient valley, the Palghat Gap. A majority of the bush frog sister lineages were isolated on adjacent massifs, and signatures of range stasis provide support for the dominance of geological processes in allopatric speciation. In situ diversification events within the montane zones (more than 1800 m) of the two highest massifs suggest a role for climate-mediated forest-grassland persistence. Independent transitions along elevational gradients among sub-clades during the Miocene point to diversification along the elevational gradient. The study highlights the evolutionary significance of massifs in the Western Ghats with the high elevations acting as centres of lineage diversification and the low- and mid-elevations of the southern regions, with deeply divergent lineages, serving as museums. PMID:27534957

  2. Patterns of biomediated CaCO3 crystal bushes in hot spring deposits

    Science.gov (United States)

    Peng, Xiaotong; Jones, Brian

    2013-08-01

    In the Eryuan hot spring, located in south China, the vent pool is covered with “crystal bushes”, up to 2 cm high, 1 cm in diameter, that grew in the biofilms that thrive in the spring waters that have a pH of 7.5 and a temperature of 88 °C. The biofilms are formed largely of phototrophic purple bacteria and green bacteria. Growth of the crystal bushes, which are formed of aragonite crystals (wheat-sheaves, radiating clusters), rhombohedral and dodecahedral calcite crystals, amorphous CaCO3 (ACC), and opal-A, is attributed to precipitation in the micro-domains of the biofilms where physiochemical conditions can vary on the sub-micron scale. There is no evidence that the calcite was formed through recrystallization of the metastable aragonite and most of the calcite crystals developed as mesocrystals that are characterized by incomplete growth and porous crystal faces. With the onset of diagenesis, there is a high probability that the crystal bushes will lose much of their identity as the (1) biofilm is lost through decay, (2) ACC and aragonite change to calcite, (3) identities of the mesocrystals and incompletely formed crystals are lost through continued precipitation and/or recrystallization, and (4) porous crystal faces are converted to solid crystal faces. This means that most of the features considered indicative of biomediated calcite precipitation have a low preservation potential and that the recognition of biomediated precipitates in old spring deposits may remain problematical.

  3. The USA policy evolution in the Caspian sea from Clinton to Bush; L'evolution de la politique americaine dans la region de la mer Caspienne de Clinton a Bush

    Energy Technology Data Exchange (ETDEWEB)

    Jafalian, A

    2003-07-01

    The author analyzes the USA policy in the Caspian Sea area and its evolution with the election of Bush. If no major orientation appear, some sensible evolutions are presented concerning the pipelines management in this area. The author presents then, the new definition of the economical variables and the reinforcement of the security dimension of the USA policy. (A.L.B.)

  4. Labor and the Bush Administration: “down so long, seem like up to me” Le syndicalisme américain pendant les années Bush

    Directory of Open Access Journals (Sweden)

    Gerald Friedman

    2010-03-01

    Full Text Available For a century, scholars and labor movement activists have debated the question of “American Exceptionalism,” or the distinctive nature of the labor movement in the United States. The weakness of American unions, especially their lack of members, has been attributed to distinctive features of American society, notably the hostility of the American government towards unions. Those who accept this Exceptionalist view have urged unions in the United States to become more active politically in order to strengthen their position. Since 1980, unions have followed this advice and have doubled their political spending. Most of the unions’ political activity and spending has been in support of candidates of the Democratic Party; but unions have received little in return from Democrats, even during the Clinton Administration. Indeed, during the administration of George W. Bush, union membership fell at almost exactly the same rate as before notwithstanding the Bush Administration’s open hostility towards unions and its attempt to use state power against unions in both the private and public sectors. In fact, over the last decades, we may be seeing the end of Exceptionalism. Since 1990, union membership decline has been slower in the United States than in most other OECD member states, despite a relatively hostile political and legal regime. Combined with the negligible effect of the Bush Administration on American unions, this suggests that union weakness in the United States is not due to exceptional features of the United States but to characteristics it shares with other countries. Throughout the affluent world, the idea of the labor movement has lost its tie to the broader democratic aspirations. In America and elsewhere, union revival depends on more than some incremental legal changes or political victories. It depends on the revival of the formative ideals of the labor movement, equality, fraternity, and the struggle for free and democratic

  5. Advantages of the synthetic technique for the conduction of short circuit tests to breakers; Ventajas de la tecnica sintetica para realizar pruebas de corto circuito a interruptores

    Energy Technology Data Exchange (ETDEWEB)

    Sibilski, Henry [Instituto Electrotecnico de Varsovia, Varsovia (Poland); Ochoa Vivanco, Ruben [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1986-12-31

    In this article the operational principle of the synthetic test is described; specifically of the current injection circuit in parallel. Its utilization in the research and development of new breaker models and its wide possibilities regarding its testing characteristics is outlined. Likewise the different tests that can be performed by means of the synthetic technique are described. Finally the importance of the synthetic tests is outlined for the development of own technology in the area of interruption equipment and emphasis is made that in industrialized countries this technique is of common practice. [Espanol] En este articulo se describe el principio de operacion de la prueba sintetica; especificamente del circuito de inyeccion de corriente en paralelo. Se destaca su utilizacion en la investigacion y desarrollo de nuevos modelos de interruptores y sus amplias posibilidades en cuanto a caracteristicas de prueba. Asimismo, se describen las diferentes pruebas que pueden realizarse mediante la tecnica sintetica. Por ultimo, se destaca la importancia de las pruebas sinteticas para el desarrollo de tecnologia propia en el area de equipos de interrupcion, y se hace notar que en paises desarrollados, esta tecnica es practica comun.

  6. President Bush : langenud nõuavad, et me jätkame võitlust! / Tõnis Erilaid

    Index Scriptorium Estoniae

    Erilaid, Tõnis, 1943-

    2005-01-01

    Salt Lake Citys USA sõjaveteranidele peetud kõnes ütles USA president George W. Bush, et tuleb jõuda eesmärgile, mille eest USA sõdurid oma elu andsid. Samas toimus sõjavastaste demonstratsioon

  7. Automatic classification of Google Earth images for a larger scale monitoring of bush encroachment in South Africa

    Science.gov (United States)

    Ludwig, Annika; Meyer, Hanna; Nauss, Thomas

    2016-08-01

    Bush encroachment of savannas and grasslands is a common form of land degradation in the rangelands of South Africa. To assess the carrying capacity of the land and to understand underlaying processes of bush encroachment, continuous monitoring of this phenomenon is needed. The aim of this study is to provide training sites for satellite-based monitoring of bush encroachment in South Africa on a medium spatial resolution satellite sensor (e.g. MODIS or Landsat) scale. Since field surveys are time consuming and of limited spatial extent, the satellite based creation of training sites using Google Earth images is intended. Training pixels for woody vegetation and non-woody land cover were manually digitized from 50 sample Google Earth images. A Random Forests model was trained to delineate woody from non-woody pixels. The results indicate a high performance of the model (AUC = 0.97). The model was applied to a further 500 Google Earth images with a spatial extent of 250 m × 250 m. The classified images form the database of training sites which can be used for larger scale monitoring of bush encroachment in South Africa.

  8. On-line diagnosis of high power motors based on ultra wide band partial discharge detection; Diagnostico en linea de motores de gran capacidad mediante la deteccion de descargas parciales utilizando tecnicas de banda ultra ancha

    Energy Technology Data Exchange (ETDEWEB)

    Carvajal M, F. Antonio; Garcia Colon H, Vicente R. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Asiain, Tomas [Instituto Politecnico Nacional, Escuela Superior de Ingenieria Mecanica y Electrica (Mexico)

    2009-07-01

    In this work a non-standardized method for on-line diagnostic of high capacity motors based on Ultra Wide Band (UWB) Partial Discharge (PD) measuring techniques is theoretically supported, implemented and applied. The method developed is non invasive and consist in the measurement of PD in the main motor power supply cables and its ground shields connection using a near field sensor (Rogowski coil, clamp-on type) with a bandwidth of 2 to 40 MHz. The measured signals by the sensor, are stretched electronically, digitized and fed to a conventional Partial Discharge digital detector. The UWB PD detection system used displays the output in a Pulse repetition frequency-Charge-Phase angle (N-Q-?) PD pattern. The results obtained in thirteen 2500 H.P., 13.8 kV motors performed during operating in an Oil Pumping facility are presented, including its analysis and comparison with values and PD patterns reported in literature. [Spanish] En este trabajo se presentan los fundamentos teoricos, la implementacion y aplicacion de un metodo no normalizado, para el diagnostico en linea de motores de gran capacidad, basado en la deteccion de Descargas Parciales (DP) utilizando tecnicas de medicion de Banda Ultra Ancha. El metodo desarrollado es no invasivo y consiste en la medicion de las DP en los conductores y conexiones a tierra de la pantalla de los cables principales de suministro de energia al motor, utilizando un sensor de campo cercano (bobina Rogowski, tipo gancho) cuyo ancho de banda de medicion es de 2 a 40 MHz. Las senales medidas por el sensor son electronicamente procesadas para ampliar su duracion, digitalizadas y enviadas a un detector digital de Descargas Parciales convencional. El sistema de deteccion de DP en Banda Ultra Ancha despliega la medicion en un patron de DP tipo frecuencia de repeticion de Pulso-Carga-Angulo de fase (N-Q-?). Se presentan los resultados obtenidos de la evaluacion en linea de trece motores de 2500 C.P. a 13.8 kV, instalados y operando en una

  9. Evaluation of DFIR and Bush Gauge Snowfall Measurements at Boreal Forest Sites in Saskatchewan/Canada and Valdai/Russia

    Science.gov (United States)

    Yang, D.; Smith, C.

    2013-12-01

    Snowfall is important to cold region climate and hydrology including Canada. Large uncertainties and biases exist in gauge-measured precipitation datasets and products. These uncertainties affect important decision-making, water resources assessments, climate change analyses, and calibrations of remote sensing algorithms and land surface models. Efforts have been made at both the national and international levels to quantity the errors/biases in precipitation measurements, such as the WMO Solid Precipitation Intercomparison Experiment (WMO-SPICE). Both the DFIR (double fence intercomparison reference) and the bush shielded gauge have been used in the past as a reference measurement for solid precipitation and they both have been selected as the references for the current SPICE project. Previous analyses of the DFIR vs. the bush (manual Tretyakov) gauge data collected at the Valdai station in Russia suggest DFIR undercatch of snowfall by up to 10% for high wind conditions. A regression relationship between the 2 systems was derived and used for the last WMO gauge intercomparison. Given the importance of the DFIR as the reference for the WMO SPICE project, it is necessary to re-examine and update the DFIR and bush gauge relationship. As part of Canada's contribution to the WMO SPICE project, a test site has been set up by EC/ASTD/WSDT in the southern Canadian Boreal forest to compare the DFIR and bush gauges. This site, called the Caribou Creek, has been installed within a modified young Jack Pine forest stand - north of Prince Albert in Saskatchewan. This study compiles and analyzes recent DFIR and bush gauge data from both the Valdai and Caribou Creek sites. This presentation summarizes the results of data analyses, and evaluates the performance of both references for snowfall observations in the northern regions. The methods and results of this research will directly support the WMO SPICE project and contribute to cold region hydrology and climate change research.

  10. Classifying Google Earth images as training sites for application to a larger scale monitoring of bush encroachment in South Africa

    Science.gov (United States)

    Ludwig, Annika; Meyer, Hanna; Higginbottom, Thomas; Nauss, Thomas

    2016-04-01

    Bush encroachment of rangelands in South Africa is a common form of land degradation with negative economic consequences. A monitoring of bush encroachment is needed for several reasons: on the one hand, it allows farmers to identify locations with upcoming bushes which gives them a tool for management (e.g. poisoning of bushes) and would further allow them to assess the current carrying capacity of their land. On the other hand, it serves scientists as a baseline to reveal the still unknown causes of bush encroachment. This study aimed at providing training sites applicable for a satellite-based monitoring of woody vegetation in South Africa on the scale of medium spatial resolution satellite sensors (e.g. MODIS or Landsat). Since field surveys are time consuming and only of limited spatial extent, a satellite based creation of training sites on the basis of Google Earth images was intended. In view to an automatic classification of the Google Earth RGB images, training pixels for woody vegetation and non woody land cover were manually digitized from 50 example images. A Random Forests model was then trained to delineate woody from non woody pixels. With an area under the ROC-curve of 0.97, the model was highly able to classify the images. The model was applied to classify further 500 Google Earth images with a spatial extent of 250x250m. The classified images form the database of training sites which can be used for a MODIS based monitoring of woody vegetation in upcoming studies.

  11. Eland browsing of Grewia occidentalis in semi-arid shrubland: the influence of bush clumps

    Directory of Open Access Journals (Sweden)

    L.H. Watson

    1999-01-01

    Full Text Available Grewia occidentalis plants in the study area generally occurred in bush clumps with other shrub species. Grewia occidentalis commonly occurred with Diospyros austro-africana, Rhus longispina and Rhus pollens (nurse shrubs, but seldom with Acacia kar-roo and Lycium cinereum (non-nurse shrubs. Eland browsed G. occidentalis plants at higher levels than other shrub species, but browsing was not evenly spread across all plants. Grewia occidentalis plants associated with nurse shrubs had lower levels of browsing than those growing alone and those growing with non-nurse shrubs, while G. occidentalis plants in the centre of nurse shrubs experienced the lowest levels of browsing. The latter group of plants also produced the most fruit. Eland browsing is consid-ered an important factor determining the distribution of G. occidentalis plants in the study area, while the presence of nurse shrubs is considered essential for the establishment and maintenance of the G. occidentalis population in the study area.

  12. Governor Bush makes first phone call to KSC using new area code

    Science.gov (United States)

    1999-01-01

    At 8 a.m. in the videoconference room at Headquarters, Deputy Director for Business Operations Jim Jennings (center) makes the connection for a phone call from Florida Governor Jeb Bush and Center Director Roy Bridges in Tallahassee, Fla. The call is to inaugurate the change of KSC's area code from 407 to 321, effective today. Key representatives of KSC contractors, along with KSC directorates, fill the room where the phone call is being received. Seated next to Jennings are Robert Osband (left), Florida Space Institute, and Col. Stephan Duresky (right), vice commander, 45th Space Wing. Osband is the one who suggested the 3-2-1 sequence to reflect the importance of the space industry to Florida's space coast.

  13. New functionally dioecious bush tomato from northwestern Australia, Solanum ossicruentum, may utilize "trample burr" dispersal.

    Science.gov (United States)

    Martine, Christopher T; Cantley, Jason T; Frawley, Emma S; Butler, Alice R; Jordon-Thaden, Ingrid E

    2016-01-01

    A new Australian species of functionally dioecious bush tomato of Solanum subgenus Leptostemonum is described. Solanum ossicruentum Martine & J.Cantley, sp. nov., is thought to be allied with members of the problematic "Dioicum Complex" lineage, but differs in its short silvery indumentum, long calyx lobes, larger stature, and an unusual fruit morphology that may represent "trample burr" seed dispersal. The species occurs in a range extending from the eastern Kimberley in Western Australia to far northwestern Northern Territory and has been recognized for decades as a variant of Solanum dioicum W.Fitzg. Specimens of this species were previously referred to by D.E. Symon and others as Solanum dioicum 'Tanami.' Ex situ crossing studies and SEM images of inaperturate pollen grains produced in morphologically hermaphrodite flowers indicate that this taxon is functionally dioecious. The scientific name was chosen with the help of 150 seventh grade life science students from Pennsylvania, USA. PMID:27489475

  14. Wolves at the Door: Musical persuasion in a 2004 Bush-Cheney advertisement

    Directory of Open Access Journals (Sweden)

    Matthew A. Killmeier

    2010-10-01

    Full Text Available Many journalists and scholars overlook the discursive role of music in TV political advertisements. But we argue that music is a potent means of political persuasion. Music in advertisements is determinative; all other elements—images, voiceovers, sound effects, written text, and so on—are circumscribed by the music and interpreted in relation to it. Music determines an advertisement’s character through framing and underscoring; musical frames establish interpretative categories and generate expectations, while underscoring comprises music that closely coordinates with images and voiceovers to form a persuasive aesthetic and rhetorical unity. A close reading of a 2004 Bush-Cheney advertisement applies this theory of frames and underscoring to explain the advertisement’s effectiveness. Without music, the advertisement would not only fail to persuade, it would also make no sense.

  15. Bovine trypanosomosis due to Trypanosoma vivax in the German Bush province, Bolivia

    Directory of Open Access Journals (Sweden)

    ROBERTO A M S SILVA

    2001-01-01

    Full Text Available Trypanosoma vivax is a hemoparasite found throughout the tsetse belt in Africa. It has, however, spread to other parts of Africa, Central America, South America, the West Indies and Mauritius. This paper report in the first time the occurence of the T. vivax in the German Bush province, Bolivia. T. vivax was identified in 45% of 80 cattle examined by microhematocrit test. The clinical signs observed were fever, anemia, abortion, progressive weakness, substantial weight loss in relative short time, and progressive emaciation and lymphonode enlargement. The results of this study suggets that the accelerate spreading of T. vivax could represent a serious impact to the economy of the regionTrypanosoma vivax es un hemoparasito encontrado en la región de la mosca tsé-tsé en Africa. Sin embargo, el se ha difundido a otras partes de Africa, Centro-América, Sud-América, Indias Occidentales e Islas Mauricio. Este trabajo es un relato de la primera occurencia de T. vivax en la provincia de German Bush, Bolivia. T. vivax fue identificado en 45% de los 80 bovinos examinados por el test de microhematocrito. Los síntomas clínicos observados fueran fiebre, anemia, abortos, emagrecimiento progresivo, pérdida substancial de peso en tiempo corto y emaciación progresiva y linfonodos aumentados. Lo resultados de este estudio sugieren que la difusión acelerada de T. vivax podrían representar un serio impacto a la economía de la región

  16. Frequency processing at consecutive levels in the auditory system of bush crickets (tettigoniidae).

    Science.gov (United States)

    Ostrowski, Tim Daniel; Stumpner, Andreas

    2010-08-01

    We asked how processing of male signals in the auditory pathway of the bush cricket Ancistrura nigrovittata (Phaneropterinae, Tettigoniidae) changes from the ear to the brain. From 37 sensory neurons in the crista acustica single elements (cells 8 or 9) have frequency tuning corresponding closely to the behavioral tuning of the females. Nevertheless, one-quarter of sensory neurons (approximately cells 9 to 18) excite the ascending neuron 1 (AN1), which is best tuned to the male's song carrier frequency. AN1 receives frequency-dependent inhibition, reducing sensitivity especially in the ultrasound. When recorded in the brain, AN1 shows slightly lower overall activity than when recorded in the prothoracic ganglion close to the spike-generating zone. This difference is significant in the ultrasonic range. The first identified local brain neuron in a bush cricket (LBN1) is described. Its dendrites overlap with some of AN1-terminations in the brain. Its frequency tuning and intensity dependence strongly suggest a direct postsynaptic connection to AN1. Spiking in LBN1 is only elicited after summation of excitatory postsynaptic potentials evoked by individual AN1-action potentials. This serves a filtering mechanism that reduces the sensitivity of LBN1 and also its responsiveness to ultrasound as compared to AN1. Consequently, spike latencies of LBN1 are long (>30 ms) despite its being a second-order interneuron. Additionally, LBN1 receives frequency-specific inhibition, most likely further reducing its responses to ultrasound. This demonstrates that frequency-specific inhibition is redundant in two directly connected interneurons on subsequent levels in the auditory system. PMID:20533362

  17. U.S. energy policy and the Bush administration's North American energy strategy

    International Nuclear Information System (INIS)

    This presentation outlined the energy policy in the United States and its impact on frontier development in Alaska, deepwater offshore fields and in the western oil shale resources. The energy strategy focuses on technologies that increase domestic production from existing resources as well as technologies that create new sources of energy. In addition to emphasizing the cooperation between Canada and the United States in ensuring energy supply security and stability, this paper discussed the importance of overall bilateral trade between the 2 countries. It was noted that Canada is the United State's most secure and reliable energy partner and is the number 1 supplier of imported oil, natural gas, electricity and uranium. The Bush administration's energy policy is based on the mandate to supply stable, reliable, secure, affordable and environmentally sound energy for the country's growing economy. The energy strategy focuses on increasing energy supplies, promoting energy conservation, repairing and modernizing the energy infrastructure, protecting the environment and improving energy security. Basic changes to the way energy is produced and used will be needed in order to meet these challenges. Energy security can be met through efficiency gains, diversification and use of alternative energy sources. The strategy involves a balance of supply sources, ranging from increasing domestic oil and gas production to such sources as clean coal generation, nuclear power and hydropower. The policy also balances the use of traditional energy sources with renewables such as geothermal, solar, wind and hydrogen. The United States, Canada and Mexico have identified the following 9 areas as critical for interaction on energy: energy data, electricity, regulatory cooperation, energy efficiency, natural gas, oil sands, nuclear and energy science and technology. Construction of the Alaska Natural Gas Pipeline is also one of the Bush administration's highest priorities, along with

  18. Asistencia tecnica a la Red Nacional de Equipos Diramic. Cuatrienio 2000-2004

    Directory of Open Access Journals (Sweden)

    José Seco Alvarez

    2005-01-01

    Full Text Available El establecimiento de la red nacional de equipos Diramic , generó la necesidad de crear las condiciones para realizar la asistencia técnica de los equipos asociados a dicha red. Mediante este trabajo, se ha asegurado un correcto funcionamiento de la misma, al mismo tiempo que se ha obtenido una gran cantidad de información que posibilita de forma directa el trabajo para el mejoramiento continuo del sistema. La red nacional de equipos Diramic ha prestado servicio ininterrumpidamente desde su instalación, colaborando de esta forma en gran medida con una correcta utilización de la politica de aplicación de antibióticos en todo el pais. Mediante la presentación de diferentes tablas y gráficos, a partir de la información obtenida por medio del sistema de calidad existente, los reportes técnicos y las quejas de los hospitales, se exponen los resultados del trabajo de asistencia técnica en el cuatrienio 2000 - 2004. Se analizan los resultados del trabajo de los diferentes laboratorios pertenecientes a la red, asi como las incidencias de los diferentes elementos gastables del sistema (principal queja de los usuarios durante todo el período analizado, los problemas de manipulación por parte de los especialistas que trabajan con los equipos, la relación existente entre elemento gastable - mala manipulación del usuario - calidad del servicio prestado, se analizan las quejas recibidas por el grupo de Comercialización. Se exponen diferentes sugerencias y recomendaciones a los especialistas que trabajan con los equipos, con el objetivo de lograr un mayor período de vida util para el equipo , asi como incrementar la calidad del servicio. Se presentan además diferentes medidas para incrementar los resultados en el trabajo de asistencia técnica.

  19. Determination of the degradation constant and endogenous constant and endogenous respiration using a respirometric technique. Determinacion de la constante de degradacion y respiracion endogena mediante una tecnica respirometrica

    Energy Technology Data Exchange (ETDEWEB)

    Menendez Gutierrez, C.; Perez Olmo, J.

    1993-08-01

    Using the common basic equation for expressing the activated sludge process, it was established that where the sludge is more than 5 days old, employing the total biomass descomposition speed coefficient (kb) may lead to EDAR design errors. It should be replaced by the coefficient for the degradable biomass (kj) which is relatively quick and easy to determine. (Author) 5 refs.

  20. A comparison in the reconstruction of neutron spectrums using classical iterative techniques; Una comparacion en la reconstruccion de espectros de neutrones utilizando tecnicas iterativas clasicas

    Energy Technology Data Exchange (ETDEWEB)

    Ortiz R, J. M. [Departamento de Electrotecnia y Electronica, Escuela Politecnica Superior, Av. Menendez Pidal s/n, 14004 Cordoba (Spain); Martinez B, M. R.; Vega C, H. R. [Unidad Academica de Estudios Nucleares, Universidad Autonoma de Zacatecas, Cipres 10, Fracc. La Penuela, 98068 Zacatecas (Mexico); Gallego, E. [Departamento de Ingenieria Nuclear, Universidad Politecnica de Madrid, Jose Gutierrez Abascal 2, 28006 Madrid (Spain)], e-mail: morvymm@yahoo.com.mx

    2009-10-15

    One of the key drawbacks to the use of BUNKI code is that the process begins the reconstruction of the spectrum based on a priori knowledge as close as possible to the solution that is sought. The user has to specify the initial spectrum or do it through a subroutine called MAXIET to calculate a Maxwellian and a 1/E spectrum as initial spectrum. Because the application of iterative procedures by to resolve the reconstruction of neutron spectrum needs an initial spectrum, it is necessary to have new proposals for the election of the same. Based on the experience gained with a widely used method of reconstruction, called BUNKI, has developed a new computational tools for neutron spectrometry and dosimetry, which was first introduced, which operates by means of an iterative algorithm for the reconstruction of neutron spectra. The main feature of this tool is that unlike the existing iterative codes, the choice of the initial spectrum is performed automatically by the program, through a neutron spectra catalog. To develop the code, the algorithm was selected as the routine iterative SPUNIT be used in computing tool and response matrix UTA4 for 31 energy groups. (author)

  1. EARTH MICRO-COSMOS. A technique to evaluate the effect produce by pollutants; MICROCOSMOS TERRESTRE. Una tecnica para la evaluacion de los efectos producidos por los contaminantes

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez Gimeno, B.; Sanchez Cabrero, B.; Varela Gonzalez, J.

    1987-07-01

    Chemical pollution is one of the risks of industrialization. Daily there emerge a great deal of chemical compounds and it is necessary to asses the risk they might suppose to the environmental and/or human health. Till recently, the toxicity tests of the chemicals or their transformation products, were carried out using individuals of a few species. This approach doesn't seem correct because it ignores the relations that are stablished at the ecosystem level. Microcosms pretend to be an adecuated tool for the ecotoxicologicals tests. This review presents two different parts: in the first one, we show the possible applications of microcosms, in the second one, we present the validation and evaluation of the soil core microcosm, following the works done by EPRI and EPA. It would be interesting to assess and validate the soil core microcosm using it with fumigation of atmospheric pollutant in controlled environment and subsequently compare the results obtained in the laboratory with those obtained in the field. We think that this approach, along with other, techniques, may be useful. (Author) 37 refs.

  2. Location of facts devices from a dynamic perspective; Ubicacion de dispositivos FACTS desde una perspectiva dinamica

    Energy Technology Data Exchange (ETDEWEB)

    Coronado Gallegos, Ixtlahuatl

    2001-09-15

    In this work techniques for the location of FACTS devices (Flexible Systems of AC Transmission) in a multi-machine power system in order to improve the electromechanical transient behavior is presented. In the first part, a brief introduction is presented about the FACTS devices, in which are mentioned some of the main characteristics, classification and advantages that their utilization represents. In the next part, the formulation of the matrix of state in the context of machine-infinite bar considering the possibility of including a power system stabilizer is developed. Later the formulation is extended to a multi-machine system. Additionally the form of including a series capacitor controlled by thyristors (TCSC) as well as a unified controller of power flows (UPFC) is analyzed. An analysis of the UPFC is carried out in conditions of stationary and dynamic state in a system machine-infinite bar in order to know its operating characteristics and its capacity for dampening power oscillations through its entrances of control when using local signals. In the last part of the work a methodology is proposed to attack the problem of the location of FACTS devices, which is based in the technique of response to the system frequency. In order to validate this proposal some cases of study are used and the results obtained with the ones provided by other techniques are compared. Also some auxiliary means are proposed for obtaining the feasible locations utilizing other mathematical tools such as the singular values and the sensitivities. Finally, simulations in the time are carried out to corroborate the results obtained. [Spanish] En este trabajo se presentan tecnicas para la localizacion de dispositivos FACTS (Sistemas Flexibles de Transmision de C.A) en un sistema de potencia multimaquinas a fin de mejorar el comportamiento transitorio electromecanico. En la primera parte se presenta una breve introduccion acerca de los dispositivos FACTS, en la cual se mencionan

  3. Sacral-neuromodulation CT-guided; Nuova tecnica di centraggio TC-assistista nella neuromodulazione sacrale

    Energy Technology Data Exchange (ETDEWEB)

    Amoroso, Lamberto; Ricci, Stefano [INRCA, Ancona (Italy). Dipartimento di radiologia e medicina nucleare; Pelliccioni, Giuseppe; Scarpino, Osvaldo [INRCA, Ancona (Italy). Unita' operativa di radiologia; Ghiselli, Roberto; Saba, Vittorio [INRCA, Ancona (Italy). Dipartimento di chirurgia

    2005-04-01

    total of 38 centering. Eight patients underwent the PNE procedure on both the S3 foramina. The sacral foramen was centred at the first attempt in 36 out of 38 cases. Two cases required several attempts to centre correctly the foramen. In 4 patients out of 30 a second electrode was implanted. In one patient who had a non consolidated sacral fracture, CT guidance enabled insertion of the electrode inside the only practicable foramen, a manoeuvre that would have been impossible with fluoroscopic guidance. Only once was repositioned after a CT control. During the whole trial period we had a positive response to the PNE test in 18 out of 30 patients (60%), a partial response in 4 out of 30 patients and a negative response in the remaining 8 patients. None of the patients who underwent the PNE test had infectious complications and the procedure was well tolerated by all. The procedure lasted about 45 minutes. Conclusions: The PNE test under Ct guidance proved to be more efficient compared with the traditional technique as the direct view of the electrode position helped to define with greater reliability the patients who were non-responsive to sacral stimulation. Moreover, this method was particularly efficient in patients with sacral anomalies where the traditional guide might fail. The operators' reduced exposure to radiation is an advantage to be taken into consideration. Finally, the usage of mobile CT apparatus in an operating theatre can improve the technique for permanent implantations. [Italian] Scopo: La neuromodulazione sacrale ? una nuova procedura diagnostico-terapeutica pe ri disturbi funzionali del basso tratto urinario come l'incontinenza urinaria da urgenza, la ritenzione urinaria non ostruttiva, la sindrome urgenza/frequenza, il dolore pelvico cronico intrattabile e, di recente, anche per il trattamento della stipsi e dell'incontinemza fecale. Il trattamento prevede una prima fase definita PNE test (Percutaneous Nerve Evaluation) che consiste

  4. Deliver us from evil: the effects of mortality salience and reminders of 9/11 on support for President George W. Bush.

    Science.gov (United States)

    Landau, Mark J; Solomon, Sheldon; Greenberg, Jeff; Cohen, Florette; Pyszczynski, Tom; Arndt, Jamie; Miller, Claude H; Ogilvie, Daniel M; Cook, Alison

    2004-09-01

    According to terror management theory, heightened concerns about mortality should intensify the appeal of charismatic leaders. To assess this idea, we investigated how thoughts about death and the 9/11 terrorist attacks influence Americans' attitudes toward current U.S. President George W. Bush. Study 1 found that reminding people of their own mortality (mortality salience) increased support for Bush and his counterterrorism policies. Study 2 demonstrated that subliminal exposure to 9/11-related stimuli brought death-related thoughts closer to consciousness. Study 3 showed that reminders of both mortality and 9/11 increased support for Bush. In Study 4, mortality salience led participants to become more favorable toward Bush and voting for him in the upcoming election but less favorable toward Presidential candidate John Kerry and voting for him. Discussion focused on the role of terror management processes in allegiance to charismatic leaders and political decision making. PMID:15359017

  5. Contribuciones tecnicas para la medida de la contaminacion electromagnetica de microondas. Estudio en diversas poblaciones

    Science.gov (United States)

    Segura Garcia, Jaume

    La contaminacion ambiental por campos electromagneticos ha resultado ser en estos ultimos anos uno de los problemas mas acuciantes del panorama tecnologico y de salud publica. En el primero de los casos porque las inversiones realizadas son enormes y en el segundo porque cada vez es mayor el numero de articulos, "technical reports" e informes medicos que afirman la existencia de una cierta causalidad, aunque sea debil, entre los campos electromagneticos y ciertos cuadros sintomatologicos. En nuestro caso, hemos dedicado bastantes esfuerzos a investigar el llamado "sindrome de radiofrecuencia / microondas", denominado asi en la literatura cientifica por presentarse en operarios de estaciones de radar y en trabajadores de potentes emisoras de radio y television. En esta memoria presentamos un resumen del trabajo realizado durante los ultimos anos en la medida de la contaminacion electromagnetica ambiental asociado a las comunicaciones inalambricas. En ella se recogen los fundamentos fisicos y propiedades de las ondas electromagneticas, la tecnologia empleada en los sistemas de telefonia celular y los antecedentes relativos a la investigacion de la interaccion de las ondas electromagneticas con organismos vivos. Se desarrolla un procedimiento de medida que ha conducido a la elaboracion de los primeros "mapas de radiofrecuencia" similares, en el aspecto descriptivo, a los mapas de ruido desarrollados en el area de la contaminacion acustica. Por ultimo, se analiza la respuesta subjetiva de los residentes, personas que viven en el entorno de cobertura de las estaciones base de telefonia movil y que se ven sometidos a determinados niveles de radiacion electromagnetica, con el fin de situar este fenomeno al nivel que le corresponde en el ambito de la respuesta subjetiva ciudadana.

  6. The relative uptake of 237Pu(IV) and Pu(VI) oxidation states from water by bush beans

    International Nuclear Information System (INIS)

    Recent data is presented on the status of Pu oxidation states (IV) and (VI) during plant uptake from an aqueous culture. An experiment was performed with bush beans, using 237Pu, to monitor the stability of Pu(IV) and Pu(VI) in the solution phase, to evaluate the relative uptake of each oxidation state by bush beans from water, and to determine the valence of the Pu inside the vascular system by analyzing the xylem exudate. Pu(VI) in solution was assimilated by plants more rapidly than Pu(IV) but was reduced to the less biologically mobile Pu(IV) in the plant biochemical environment. Dominance of Pu(IV) in the xylem exudate indicates that Pu(VI) would not be expected to persist in vegetable matter. Therefore of the biochemically associated Pu in plant matter ingested by humans a considerably larger amount would occur as Pu(IV) than as Pu(VI). (author)

  7. Effect of DTPA on concentration ratios of 237Np and 244Cm in vegetative parts of bush bean and barley

    International Nuclear Information System (INIS)

    Bush beans (Phaseolus vulgaris L.) and barley (Hordeum vulgare L.) were grown in two different soils (noncalcareous and calcareous) in containers in a glasshouse with 530 pCi/g 237Np or 15040 pCi/g 244Cm mixed into separate containers of the soil. The chelating agent DTPA at 100 μg/g soil was added to one half of the containers. The concentration ratio (C.R.) without DTPA was two orders of magnitude higher for 237Np than for 244Cm by two and three orders of magnitude but had little influence on 237Np. For the calcareous soil with DTPA, 244Cm C.R.'s were greater than those for 237Np. In bush beans both 237Np and 244Cm C.R.'s were higher in primary leaves than in trifoliate leaves which were higher than for stems

  8. Anisotropy in Alpedrete granite cutting (Rift, Grain and Hardway directions) and effect on bush hammered heritage ashlars

    Science.gov (United States)

    Freire-Lista, David Martin; Fort, Rafael

    2015-04-01

    Many monuments and cities that are part of humanity's heritage have been built with carved granite ashlars. This dimension stone is one of the most used due to its abundance and durability. Traditional quarrymen have used anisotropic planes to cut granite blocks in the quarry for improved cutting performance. These planes are called Rift, Grain and Hardway (R, G, H) according to the ease of cutting. The aim of this study is to determine the response of each of the three orthogonal cutting planes R, G and H to the craft styling with bush hammer, based on their decay. Alpedrete granite was selected for this research, it is a monzogranite quarried in the Sierra de Guadarrana (Spanish Central System) foothills, in the province of Madrid, Spain. It is one of the most representative of Madrid's heritage granites. Alpedrete granite is also used as building stone in other European cities. From an Alpedrete granite bush hammered ashlar, three thin sections were cut parallel to the H plane; these thin sections cut R and G bush hammered planes. Also three thin sections have been cut parallel to the R plane at a distance of 2 mm, 10 mm and 30 mm from the bush hammered surface. All thin sections have been treated with fluorescein. In each of the thin sections a micrograph mosaic was performed covering the entire area (about 10 cm2, 300 photomicrographs) and printed with 120 increases. The length and spacing of inter-, intra- and trans-crystalline microcracks were quantified and measured. Microcracks were subdivided based on affected minerals in each R, G and H planes. Through these observations it was found that Alpedrete Granite R plane (easier to cut) is determined by exfoliation microcracks orientation. That is, R plane is parallel to the exfoliations microcracks, which are intra-crystalline and straight. The cutting of stones in the R plane is due to the coalescence of straight microcracks in the plane. This plane minimizes the effort and cost of subsequent carving so it

  9. The Bush/Cheney Energy Strategy: Implications for U.S. Foreign and Military Policy

    Energy Technology Data Exchange (ETDEWEB)

    Klare, Michael T. [Hampshire College, Amherst, MA (United States). Peace and World Security Studies

    2003-07-01

    The 'National Energy Policy' (NEP) released by the Bush Administration on May 17, 2001 was supposedly intended to meet growing U.S. energy requirements in the first two decades of the 21st Century while also diminishing U.S. dependence on imported oil. This was to be accomplished, the White House suggested, by increasing production at existing oil fields in the United States and by commencing drilling on the Artic National Wildlife Refuge (ANWR) in Alaska. So great was the furor over drilling on ANWR that most people never bothered to examine the NEP closely. This is unfortunate, as a close reading of the NEP report reveals a very different picture than that suggested by White House pronouncements: far from promoting energy 'independence', the NEP assumes that the United States will become MORE, not less dependent on imported petroleum in the years ahead and therefore calls on the Federal Government to take whatever steps are necessary to promote enhanced U.S. access to foreign oil. In particular, the NEP calls on the U.S. Government to seek additional petroleum from the Persian Gulf area, Russia, the Caspian Sea basin, Mexico, Venezuela, Angola, and Nigeria. As is implied by the report, the United States must acquire more oil from these countries in order to permit increased oil consumption in the United States at a time of declining domestic production. Even leaving aside the question of whether these countries will be able to boost their production sufficiently to satisfy steadily rising demand in the United States, this strategy poses enormous challenges for the United States because most of these areas are highly unstable and house anti-American governments and forces. It is likely, then, that U.S. efforts to acquire more oil from these countries will entail the increased presence of U.S. military forces in the area and periodic U.S. military intervention. Indeed, the requirement for increased military action in support of U.S. foreign

  10. U.S. Free Trade Agreements in East Asia: Politics, Economics, and Security Policy in the Bush Administration

    OpenAIRE

    Hoadley, Stephen

    2007-01-01

    The Bush Administration has initiated nearly two dozen bilateral and bi-multilateral free trade agreements (FTAs) in the past six years. These FTAs are valued as not only advancing U.S. economic interests but also serving foreign policy and security interests. Their perceived utility as new foreign policy instruments emerged in the wake of the stagnation of multilateral trade liberalization deliberations in the WTO forum and was amplified by the exigencies of the U.S. war on terro...

  11. Equipo Medico para Tecnicas de Potenciales Evocados y Electroneuromiografía

    Directory of Open Access Journals (Sweden)

    Lidia Charroó

    2005-01-01

    Full Text Available Las técnicas neurofisiológicas permiten la evaluación del estado funcional del Sistema Nervioso. Para su realización se hace imprescindible disponer de equipos médicos de alta tecnología que permitan el registro y análisis de estos tipos de señales. Hoy en día en el mercado internacional existe una gran variedad de estos equipos, procedentes de diferentes casas comerciales. Entre ellos se encuentra el Electromiógrafo NEURONICA, el primer equipo de su tipo desarrollado en nuestro país por el Centro de Neurociencias de Cuba y comercializado por la empresa NEURONIC S.A., el cual resulta objeto de nuestro análisis. Tras la lectura de varios artículos, así como de otros documentos que sobre el Electromiógrafo NEURONICA se han emitido, y contando con la experiencia de haber trabajar con este equipo, es inevitable realizar varias consideraciones ajustándonos a los aspectos que se destacan de éste: sus características técnicas, prestaciones, valor en la práctica médica y las investigaciones, así como su comercialización. Como resultado de este análisis se obtuvo la presente reseña. Para cualquier técnico o profesional que se interese por las técnicas neurofisiológicas, en particular por los Potenciales Evocados y las técnicas de Electroneuromiografía, dispone aquí de un documento donde se han recopilado los resultados del trabajo de muchos especialistas con el Electromiografo NEURONICA, desde su primera versión en la década de los 80 del pasado siglo (Neuronica 2 hasta la actual versión (Neuronica 5. La asimilación de estas y otras modernas técnicas facilitan la valoración integral de los pacientes atendidos en las unidades de salud, y es sin lugar a dudas un paso imprescindible hacia la elevación de la salud de la población, y con ello de la calidad de vida en cualquier país del mundo.

  12. Diet of the crayfish Paranephrops zealandicus in bush and pasture streams : insights from stable isotopes and stomach analysis

    International Nuclear Information System (INIS)

    Crayfish (Paranephrops zealandicus White) stomachs from streams in both native bush (mainly tree leaves and dicotyledonous seeds) and exotic pasture settings (mainly grass stems and monocotyledonous seeds) were dominated by allochthonous material. More detritus occurred in stomachs in autumn-winter than in spring-summer, but quantities were similar in crayfish from native bush and pasture streams. The stomachs of larger crayfish contained a significantly greater proportion of detritus than smaller individuals. Aquatic invertebrates were the second most abundant dietary category by volume, with highest values in winter, but there were no significant differences between land uses or crayfish size classes. A wide range of invertebrates was eaten by crayfish, with mayfly nymphs, chironomid larvae, and snails predominating. The latter were numerically more prominent in crayfish from bush than pasture streams. Terrestrial invertebrates were recorded from 4% of stomachs, but there were no significant differences in relation to land use, season, or crayfish size class. Despite aquatic invertebrates making up 13C and perhaps of microfloral origin, seems to be an important energy source for crayfish in both stream types. (author). 52 refs., 5 figs., 2 tabs

  13. Responses of wind erosion to disturbance in a desert scrub grassland: grass vs. bush cover, and a snapshot into recovery

    Science.gov (United States)

    Baddock, M.; Zobeck, T. M.; D'Odorico, P.; van Pelt, S.; Ravi, S.; Over, T. M.; Bhattachan, A.

    2010-12-01

    The mixture of grass and bush vegetation that typifies many desert scrublands is a distinctive feature of the northern Chihuahuan Desert, where it represents a change in land cover driven by shrub encroachment. In such environments, the redistribution of nutrients by aeolian transport has been recognized as an important biophysical process, with a role in sustaining shrub presence. Investigation of disturbances in these landscapes (e.g. fire and grazing) will enable better understanding of their dust emission behavior with changing climate, perturbance regime and management scenarios. Here we use a portable wind tunnel to investigate the impact of fire and animals on soil erodibilty and dust emissions from different vegetation types in the Sevilleta Wildlife Refuge, central New Mexico. Plots were selected that were a) predominantly creosote bush or b) predominantly grass covered. Dust emission was measured for these surfaces both before and after a prescribed burn was conducted. The grass plots were also clipped and artificially trampled to simulate grazing. PM10 concentrations and emission rates from the test surfaces are shown for initial blow-off experiments as the wind tunnel flow accelerates to a target velocity, plus the steady state emission flux produced under constant wind flow with an added abrader sand. An adjacent area burned 8 months previously also allowed investigation of the change in erodibility of the soil for a known time after fire. Our preliminary results indicate the extent that dust emission is changed by the introduced disturbances, and their differing effect on creosote bush and grass dominated covers.

  14. Heat transfer coefficients obtainment by means of naphthalene sublimation in air; Obtencion de coeficientes de transferencia de calor por medio de la tecnica de sublimacion de naftalina en aire

    Energy Technology Data Exchange (ETDEWEB)

    Perez Galindo, Jose Arturo; Garcia Gutierrez, Alonso [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1985-12-31

    This work describes the experimental technique for the sublimation of naphthalene in air which measures heat transfer coefficients through the use of the analogy between the transference phenomena of heat and mass. The technique used to substitute the experimental measurements of heat transfer, in which it is difficult to control the border thermal conditions, when they are dimmed by the omnipresent problem of heat conduction through the walls of the transference surfaces. Two examples are included of the application technique and its potential is outlined. [Espanol] En este trabajo se describe la tecnica experimental de la sublimacion de naftalina en aire mediante la que se miden coeficientes de transferencia de masa. Los datos asi obtenidos pueden convertirse en coeficientes de transferencia de calor a traves del uso de la analogia entre los fenomenos de transferencia de calor y masa. La tecnica se utiliza para substituir las mediciones experimentales de transferencia de calor, en las que es dificil controlar las condiciones termicas de frontera, cuando las empana el problema omnipresente de la conduccion de calor a traves de las paredes de las superficies de transferencia. Se incluyen dos ejemplos de la aplicacion de la tecnica y se destaca su potencial.

  15. Joan Hoff, A Faustian Foreign Policy from Woodrow Wilson to George W. Bush: Dreams of Perfectability

    Directory of Open Access Journals (Sweden)

    Katherine Rietzler

    2009-04-01

    Full Text Available Joan Hoff’s searing critique of American foreign policy from World War I to the War on Terror comes at a time when the Wilsonian legacy is attracting renewed interest. Different historians have chosen to emphasise different aspects of this legacy. Erez Manela has explored how antiimperialist intellectuals in Asia were empowered by the doctrine of self-determination during a global Wilsonian Moment, whereas David Kennedy has portrayed George W. Bush as Woodrow Wilson’s natural successor. Hoff, who has published widely on U.S. foreign relations and the American presidency, admits that a true characterisation of Wilsonian foreign policy is problematic. She resorts to a distinction between ‘good’ and ‘bad’ Wilsonianism: the former entails ‘spreading self-determination and free trade capitalism to the world through collective security arrangements’, while the latter indulges in unilateral interventionism. (10 In practice, this ambiguous inheritance has resulted in a unilateralist foreign policy tempered by occasional cooperation with other states.

  16. Conceptual design of a high-voltage compact bushing for application to future N-NBI systems of fusion reactors

    International Nuclear Information System (INIS)

    Highlights: ► Electron Field Emission occurs between large electrodes under vacuum (100 mA of e− at 450 kV). ► An Helium filling pressure of 30 mPa suppresses electron emission up to 950 kV. ► Electron suppression results from a field induced adsorption process which increases the metal work function. ► This process increases the atom binding energy in the nearby of the micro-tips. ► A new 1 MV Bushing concept based on this process is proposed. - Abstract: The energy of future neutral beam injector (NBI) heating systems of fusion power plants ranges from 1 to 2 MeV. They are based on powerful (several tens of MW) hydrogen negative ion electrostatic accelerators where electrodes are polarized by DC high-voltage. The beam line under vacuum is supplied by HV power supplies via a transmission line pressured under SF6 and a high voltage feedthrough called bushing. The paper presents results obtained over experimental campaigns dedicated to high voltage vacuum insulation for future NBI systems (ITER). It addresses the problematic of the electron field emission and the high voltage breakdown limit under vacuum between large electrode surfaces. The paper highlights the dependence of the electron emission (dark current) with the voltage and the background tank pressure: at low pressure (∼1E−3 Pa in hydrogen), an important dark current of I ∼ 100 mA has been measured at 500 kV, while at higher pressure (∼0.3 Pa in helium), the dark current has been nearly suppressed (less than 3 mA of dark current at 970 kV). The paper shows that a field induced gas adsorption process could occur on the emitting surfaces (cathode), and this process tends to lower the electron field emission current by increasing the work function of the electrode surface. The Fowler–Nordheim law applied to the measured dark current indicates about 70% of work function increase at 0.3 Pa in helium. Finally, a new high-voltage bushing concept relevant to the future NBI systems is

  17. Nonceramic insulators for the transmission power lines. Part II: Application that it requires of a careful selection; Aisladores no ceramicos para las areas de transmision. Parte II: Aplicacion que requiere de una seleccion cuidadosa

    Energy Technology Data Exchange (ETDEWEB)

    Fierro Chavez, Jose Luis [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    1999-07-01

    In this second part is mentioned the possible mechanisms of degradation that can appear in nonceramic insulators in order to identify them during the inspections that are made in the field throughout their useful life. Some techniques of evaluation of accelerated aging, as well as important aspects that must be considered for the selection of the insulation in the case of a particular application, are presented. [Spanish] En esta segunda parte se mencionan los posibles mecanismos de degradacion que pueden presentarse en los aisladores no ceramicos a fin de identificarlos durante las inspecciones que se realicen en campo a lo largo de su vida util. Se exponen algunas tecnicas de evaluacion de envejecimiento acelerado, asi como aspectos importantes que deben considerarse para la seleccion del aislamiento en el caso de una aplicacion particular.

  18. Criptosporidiosis: una zoonosis parasitaria

    OpenAIRE

    Claudia Vergara; Joaquín Quílez

    2004-01-01

    La criptosporidiosis es una enfermedad parasitaria producida por protozoos coccidios pertenecientes al género Cryptosporidium . Su importancia se puso de manifiesto a comienzos de los años 1980 por lo que puede considerarse una patología de conocimiento relativamente reciente, aunque actualmente se ha demostrado que es una de las infecciones entéricas más frecuentes en humanos y animales y un problema de salud pública en todo el mundo (Casemore et al. 1997). La especie de mayor interés ...

  19. Construyendo una nueva ciudad

    OpenAIRE

    Ariza, Jaison Fernando; Ferro, Edwin David

    2012-01-01

    La presente propuesta está fundamentada en una serie de actividades estructuradas en un proyecto de aula llamado Construyendo una nueva ciudad, gestionado en un Instituto Educativo Distrital, con el fin de potenciar el pensamiento geométrico y los sistemas de medidas en estudiantes de grado cuarto, a partir de la planeación y elaboración de una maqueta que implican el uso de sistemas de coordenadas, la noción de área, perímetro, la aplicación de proporcionalidad, entre otros aspectos.

  20. Technical feasibility of using silver and copper ions electro generated in the microbiological control of cooling systems; Factibilidad tecnica para emplear iones plata y cobre electrogenerados en el control microbiologico de los sistemas de enfriamiento

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Susana M; Martinez Meza, Esteban; Alvarez Gallegos, Alberto [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    2001-07-01

    bacterial populations promoters of the microbiological influenced corrosion and the biological fouling at levels of 1000 c/ml and less, competing with the conventional cooling water treatment processes. Also, the adherence capacity of the biofilm on the surfaces of the cooling system would be seriously affected because the silver is adsorbed to the surface that contains it and still continues its bactericidal effect. Additionally, the coliform bacteria are reduced below the levels accepted by the Mexican Official Standard. A table of the silver required for disinfection of different water qualities is shown and another one on the evaluation of the process and finally one on the effectiveness of the process using the silver/copper system in residual water. [Spanish] El objetivo de este trabajo es determinar la factibilidad tecnica de sustituir el uso de cloro por otro biocida (ionizacion de plata o cobre) no peligroso en aguas de enfriamiento. Esta tecnica de ionizacion podria ser empleada para tratar el agua de procesos industriales en general. El agua empleada provino del agua de repuesto del sistema de enfriamiento de la Central Termoelectrica de Valle de Mexico (CTEVM) y agua residual de las plantas de tratamiento del Instituto Mexicano de Tecnologia del Agua (IMTA) y el Instituto de Investigaciones Electricas (IIE). Los tres tipos de agua empleados tienen caracteristicas fisicas, quimicas y biologicas similares. La metodologia usada fue la prueba de jarras y por sistema continuo. Se indica el analisis bacteriologico llegando a la conclusion. Los sistemas metalicos estudiados en el establecimiento del control microbiologico en el agua residual y agua de repuesto son plata, plata/cobre y cobre en los intervalos de concentracion de 200 mg/L a 3000 mg/L de plata y de 200 mg/L a 1200 mg/L de cobre. Los experimentos realizados en la prueba de jarras (sistema cerrado) se llevaron a cabo a dos temperaturas (25 {+-} 0.5 y 32 {+-} 0.5 ) sin controlar el pH; mientras que en el

  1. una experiencia en Mauritania

    Directory of Open Access Journals (Sweden)

    J. M. Fernández-Palacios

    2008-01-01

    Full Text Available El macizo del Tagant, en la República Islámica de Mauritania, alberga, a lo largo de una red interconectada de humedales, las últimas poblaciones de cocodrilo del desierto Crocodylus niloticus suchus, que hasta muy poco tiempo se consideraban extintas. Estas poblaciones han sido capaces de resistir la desertización del Sahara ocurrida en el Holoceno gracias a la existencia de una serie de pozas (gueltas en árabe, que se forman tras las lluvias monzónicas y que están conectadas entre sí a través de una red de cauces efímeros o permanentes que forman la Cuenca endorreica del Lago Gabou. Estos humedales, carentes de protección en la actualidad, forman además la base económica de los más de cuarenta mil habitantes del macizo, basada en la ganadería y en una precaria agricultura. Conocedor del potencial naturalístico de la zona, el Gobierno de la RIM encargó a nuestra ONG la preparación de una memoria para dar a conocer y conseguir laproteccióninternacional de la zona en el marco de la Convención Ramsar de protección de humedales (UNESCO. El presente trabajo narra como lautilización de una especie focal, el cocodrilo del desierto, para proteger estos valiosos humedales podría ser compatible con el desarrollo de una actividad turística sostenible, basado en el turismo naturalístico y científico, que posibilite un mayor desarrollo a los habitantes del Tagant.

  2. Design status and procurement activities of the High Voltage Deck 1 and Bushing for the ITER Neutral Beam Injector

    International Nuclear Information System (INIS)

    Highlights: ► ITER Neutral Beam Injector includes several non-standard components. ► The design status of the −1 MVdc HVD1 and Bushing is described. ► The paper reports also on the integrated layout of the two components. ► Preliminary electrostatic and thermal analyses are presented. ► Procurement activities are outlined. -- Abstract: The ITER Neutral Beam Injector (NBI) power supply system includes several non-standard components, whose ratings go beyond the present industrial practice. Two of these items, to be procured by Fusion for Energy, are: 1.A −1 MVdc air-insulated Faraday cage, called High Voltage Deck 1 (HVD1), hosting the Ion Source and Extractor Power Supplies (ISEPS) and the associated diagnostics. 2.A −1 MVdc feedthrough, called HVD1-TL Bushing, aimed at connecting the HVD1 to the gas (SF6) insulated Transmission Line (TL), containing inside its High Voltage (HV) conductor all ISEPS power and control cables coming from the HVD1 to be connected to the NBI Ion Source services. The paper deals with the status of the design of the HVD1 and HVD1-TL Bushing, focusing on insulation, mechanical and thermal issues as well as on their integration with the other components of the power supply system. In particular, the insulation issue of the integrated system has been addressed by means of an electrostatic Finite Element (FE) analysis whilst a FE thermal simulation has been carried out to assess the impact of the dissipation of the proposed design of the inner conductors (ISEPS conductors) not actively cooled. Finally, the paper describes the status of procurement strategy and execution

  3. La Administración Bush y las Naciones Unidas: socavar la organización mundial

    OpenAIRE

    Bennis, Phyllis

    2003-01-01

    En este artículo P. Bennis intenta demostrar que la invasión de Irak por parte de la administración Bush Jr. responde, antes que nada, al intento de imponer el unilateralismo como la doctrina prioritaria de la política exterior norteamericana. En este sentido, el principal objetivo del actual Gobierno estadounidense es apartar a la ONU del panorama internacional. Con el fin de fundamentar tal sospecha, Bennis realiza un repaso selectivo de las principales decisiones que ha tomado la...

  4. A review of bush dog Speothos venaticus (Lund, 1842) (Carnivora, Canidae) occurrences in Paraná state, subtropical Brazil.

    Science.gov (United States)

    Tiepolo, L M; Quadros, J; Pitman, M R P L

    2016-06-01

    We report six new occurrence records of the bush dog Speothos venaticus, a widely distributed South American carnivore that is threatened with extinction. These records are accompanied by notes on the places where the records were made, such as vegetation type, date and information about the protection of areas. The records, obtained over the last 17 years in Paraná state, southern Brazil, offer an improved understanding of the species geographic range and the threats it faces and can enable better assessments of the conservation status of the species in southern Brazil. PMID:27007505

  5. The effect of fast transient overvoltages on 550 kV SF{sub 6}/oil transformer bushings

    Energy Technology Data Exchange (ETDEWEB)

    Martins, H.J.A.; Neves, A. [Centro de Pesquisas de Energia Elettrica, Rio de Janeiro (Brazil); Amorim, I.B.; Maranhao, F. [Itaipu Binacional, Parana (Brazil)

    1996-12-31

    This paper presents the results of the studies in a GIS (Gas-insulated substation) about disconnector operations and short-circuit and their dielectric stress in the form of steep front wave on the main power transformer bushings of Itaipu hydroelectric power plant. As a singular point is presented also the results of some tests specially developed to confirm and determine safe operational level and some modifications required in the equipment in order to enable them to live with these kinds of stresses.

  6. A structure-preserving approach to normal form analysis of power systems; Una propuesta de preservacion de estructura al analisis de su forma normal en sistemas de potencia

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Carrillo, Irma

    2008-01-15

    . [Spanish] El comportamiento dinamico de los sistemas de potencia es no lineal y es comprendido por diversos procesos en diferentes escalas de tiempo. El tamano y la complejidad de estos mecanismos han estimulado a la propuesta de metodos que reducen la dimension original preservando caracteristicas esenciales de la naturaleza del sistema. En esta investigacion, se propone un metodo analitico no lineal basado en la teoria de formas normales y tecnicas de perturbacion singular para el analisis de oscilaciones de gran amplitud. Este enfoque permite que el metodo de formas normales alcance su maxima capacidad proporcionando una metodologia general para su aplicacion en una amplia variedad de sistemas no lineales en los diversos campos de la investigacion. Basados en la teoria de formas normales de los sistemas dinamicos, se propone un modelo que preserva la estructura del sistema, las caracteristicas de la red y la carga. Aprovechando la separacion que existe entre la dinamica lenta y rapida, originada por las diferentes escalas de tiempo; una eficiente tecnica basada en perturbaciones singulares, es usada para obtener el comportamiento no lineal de los sistemas de potencia preservando exactamente la estructura de la red. Este metodo no requiere reduccion de ecuaciones por lo que se puede obtener informacion adicional de interes directamente de la red y de la dinamica de la carga del sistema de potencia. En este trabajo son desarrolladas expresiones analiticas que proporcionan una buena aproximacion al comportamiento real del sistema, y ademas se proponen tecnicas para interpretar estas soluciones en terminos de funciones modales para designar areas de control y ubicar dispositivos FACTS; asi tambien se desarrollan criterios para caracterizar los efectos de la red sobre el comportamiento no lineal del sistema. Los procedimientos desarrollados son probados en dos sistemas reales de potencia.

  7. Study on the property of Al-Sn-Pb and its bush material clad with steel strip by liquid-solid bond rolling

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    AlSn8Pb2Si2.5Cu0.8Cr0.2 (ASP) is a new bush material with high performance, but its bad plasticity limits its application. By studying the effect of silicon content on the performance of this bush material, it was found that the alloy performance and the distribution of tin and lead were affected by the silicon content. When the silicon content was 2.5%,most of the silicon precipitated along the grain boundary, and most of the lead and tin located along the grain boundary continuously, this resulted in the decrease of the bush material's performance. When the silicon content decreased to 1.0%,it distributed more uniformly, the tin and lead phases were spheroidized and became discontinuous, the performance of ASP material was then greatly increased.

  8. Effects of aging on the structural, mechanical, and thermal properties of the silicone rubber current transformer insulation bushing for a 500 kV substation.

    Science.gov (United States)

    Wang, Zhigao; Zhang, Xinghai; Wang, Fangqiang; Lan, Xinsheng; Zhou, Yiqian

    2016-01-01

    In order to analyze the cracking and aging reason of the silicone rubber current transformer (CT) insulation bushing used for 8 years from a 500 kV alternating current substation, characteristics including Fourier transform infrared (FTIR) spectroscopy, mechanical properties analysis, hardness, and thermo gravimetric analysis have been carried out. The FTIR results indicated that the external surface of the silicone rubber CT insulation bushing suffered from more serious aging than the internal part, fracture of side chain Si-C bond was much more than the backbone. Mechanical properties and thermal stability results illustrated that the main aging reasons were the breakage of side chain Si-C bond and the excessive cross-linking reaction of the backbone. This study can provide valuable basis for evaluating degradation mechanism and aging state of the silicone rubber insulation bushing in electric power field. PMID:27390631

  9. Study on the property of AI-Sn-Pb and its bush material clad with steel strip by liquid-solid bond rolling

    Directory of Open Access Journals (Sweden)

    Guangming XU

    2005-08-01

    Full Text Available AISn8Pb2Si25Cu0.8Cr0.2(ASP is a new bush material with high performance, but its bad lasticity limits its application. By studying the effect of silicon content on the performance of this bush material, it was found that the alloy performance and the distribution of tin and lead were affected by the silicon content. When the silicon content was 2.5%,most of the silicon recipitated along the grain boundary, and most of the lead and tin located along the grain boundary continuously, this resulted in the decrease of the bush material's performance. When the silicon content decreased to 1.0%,it distributed more uniformly, the tin and lead phases were spheroidized and became discontinuous, the performance of ASP material was then greatly increased.

  10. Tecnica y cultura

    OpenAIRE

    Quintanilla, Miguel

    1998-01-01

    The purpose of this paper is to explore the foundations of a general theory of technical culture, based on the notion of technical system and on the scientific concept of culture. To this end, several basic notions of the philosophy of technique, as technique, technology and technical system, are defined. Then, a distinction is proposed between cultural elements embodied in technical systems, and elements of technical culture which are not embodied in technical systems. Finally, a general vie...

  11. Una sombra que sobrevive

    OpenAIRE

    Alexander Cifuentes

    2014-01-01

    Alma en boca y huesos en costal. Una aproximación a los contrastes socio-económicos de la esclavitud. Santafé, Mariquita y Mompox 1610-1660. Carlos Eduardo Valencia Villa, Instituto Colombiano de Antropología e Historia, colección Cuadernos Coloniales, Bogotá, 2003, 215 págs, ilustrado.

  12. « Le mal existe ». Religion et néoconservatisme dans le discours de George W. Bush1

    OpenAIRE

    Corten, André

    2008-01-01

    Le discours de George W. Bush est marqué, dans son contenu, par l’influence de la philosophie politique dite néoconservatrice, attribuée à Léo Strauss. Mais contrairement à la conception straussienne du rapport ésotérique/exotérique, le religieux n’y mobilise pas le politique. L’effet du discours de G. W. Bush, finalement plus schmittien que straussien, contredit son contenu apparent. Il témoigne, malgré le recours au religieux, d’un politique immanent. George W. Bush’s discourse is influe...

  13. Bush Blitz aids description of three new species and a new genus of Australian beeflies (Diptera, Bombyliidae, Exoprosopini

    Directory of Open Access Journals (Sweden)

    Christine Lambkin

    2011-11-01

    Full Text Available Bush Blitz is a three-year multimillion dollar program to document the plants and animals in hundreds of properties across Australia’s National Reserve System. The core focus is on nature discovery – identifying and describing new species of plants and animals. The Bush Blitz program has enabled the collection and description of beeflies (Diptera, Bombyliidae from surveys in Western Australia and Queensland. Three new species of Australian beeflies belonging to the Exoprosopini are described; Palirika mackenziei Lambkin, sp. n., Palirika culgoafloodplainensis Lambkin, sp. n., and Larrpana bushblitz Lambkin, sp. n. Phylogenetic analysis of 40 Australian exoprosopine species belonging to the Balaana generic-group Lambkin & Yeates, 2003 supports the placement of the three new species into existing genera, and the erection and description of the new genus Ngalki Lambkin, gen. n. for Ngalki trigonium (Lambkin & Yeates, 2003, comb. n. Revised keys are provided for the genera of the Australian Balaana genus-group and the species of Palirika Lambkin & Yeates, 2003 and Larrpana Lambkin & Yeates, 2003. With the description of the three new species and the transferral of Munjua trigona Lambkin & Yeates, 2003 into the new genus Ngalki Lambkin, gen. n., three genera are rediagnosed; Munjua Lambkin & Yeates, 2003, Palirika and Larrpana.

  14. Bush Blitz aids description of three new species and a new genus of Australian beeflies (Diptera, Bombyliidae, Exoprosopini).

    Science.gov (United States)

    Lambkin, Christine L; Bartlett, Justin S

    2011-01-01

    Bush Blitz is a three-year multimillion dollar program to document the plants and animals in hundreds of properties across Australia's National Reserve System. The core focus is on nature discovery - identifying and describing new species of plants and animals. The Bush Blitz program has enabled the collection and description of beeflies (Diptera, Bombyliidae) from surveys in Western Australia and Queensland. Three new species of Australian beeflies belonging to the Exoprosopini are described; Palirika mackenziei Lambkin sp. n., Palirika culgoafloodplainensis Lambkin sp. n., and Larrpana bushblitz Lambkin sp. n. Phylogenetic analysis of 40 Australian exoprosopine species belonging to the Balaana generic-group Lambkin & Yeates 2003 supports the placement of the three new species into existing genera, and the erection and description of the new genus Ngalki Lambkin gen. n. for Ngalki trigonium (Lambkin & Yeates 2003) comb. n. Revised keys are provided for the genera of the Australian Balaana genus-group and the species of Palirika Lambkin & Yeates, 2003 and Larrpana Lambkin & Yeates 2003. With the description of the three new species and the transferral of Munjua trigona Lambkin & Yeates 2003 into the new genus Ngalki Lambkin gen. n., three genera are rediagnosed; Munjua Lambkin & Yeates 2003, Palirika and Larrpana. PMID:22207816

  15. Prevention of Carbody Vibration of Railway Vehicles Induced by Imbalanced Wheelsets with Displacement-Dependent Rubber Bush

    Science.gov (United States)

    Tomioka, Takahiro; Takigami, Tadao; Fukuyama, Atsushi; Suzuki, Takashi

    This paper discusses the issue of carbody excitation of railway vehicles due to rotation of imbalanced wheelsets and proposes a simple and cost-effective countermeasure. The basic mechanisms of the carbody excitation are first described, then a displacement-dependent rubber bush, which is used for the connection between bogie frame and carbody, is proposed. The displacement-dependent property is realized by introducing a small gap between the rubber and the inner fixture, and the transmission of excitation force with high-frequency and small displacement are isolated by the gap. The small gap can be created naturally just by skipping the bonding process of rubber and inner fixture, so it is very simple and cost-effective countermeasure against this issue. The stiffness property can be tailored to meet the requirements from motional properties of the bogie by applying a Finite Element Analysis (FEA). The effectiveness and validity of the displacement-dependent rubber bushes applied for traction links are investigated and confirmed by both numerical calculation and excitation test using a full-scale test vehicle in the rolling stock testing plant.

  16. From 2000 Bush-Gore to 2006 Italian elections: Voting at fifty-fifty and the Contrarian Effect

    CERN Document Server

    Galam, S

    2007-01-01

    A sociophysical model for opinion dynamics is shown to embody a series of recent western hung national votes all set at the unexpected and very improbable edge of a fifty-fifty score. It started with the Bush-Gore 2000 American presidential election, followed by the 2002 Stoiber-Schr\\H{o}der, then the 2005 Schr\\H{o}der-Merkel German elections, and finally the 2006 Prodi-Berlusconi Italian elections. In each case, the country was facing drastic choices, the running competing parties were advocating very different programs and millions of voters were involved. Moreover, polls were given a substantial margin for the predicted winner. While all these events were perceived as accidental and isolated, our model suggests that indeed they are deterministic and obey to one single universal phenomena associated to the effect of contrarian behavior on the dynamics of opinion forming. The not hung Bush-Kerry 2005 presidential election is shown to belong to the same universal frame. To conclude, the existence of contraria...

  17. UNA EXPERIENCIA EN CUBA

    Directory of Open Access Journals (Sweden)

    Lucy Martin

    2003-01-01

    Full Text Available Este artículo examina, desde una perspectiva so- cial, las experiencias de trabajo que un equipo multidisciplinario del INCA lleva a cabo en tres cooperativas de producción agropecuaria (CPA del sur de La Habana y en una cooperati- va de créditos y servicios (CCS de La Palma, Pinar del Río, con el objetivo de encontrar vías complementarias del fitomejoramiento formal por la vía participativa, se pretende destacar cómo en una experiencia de fitomejoramiento con la participación de los productores, se va operando una movili- zación de cambio no solo técnico sino también social, pero que a su vez reclama, para su éxito, de un movimiento en dos direcciones: participación y descentralización. Importantes lec- turas de esta experiencia son, en primer lugar, la posibilidad de construcción de conocimiento nuevo rompiendo mitos, a tra- vés de un diálogo de saberes y con la participación de los productores al tiempo que se producen cambios no solo de alcance técnico, en el ámbito de las semillas y las variedades, sino también de carácter social. En segundo lugar, revela las posibilidades de una experiencia de esta naturaleza, como ver- tiente del desarrollo sostenible y como vía de reconstrucción desde la base de nuestro proyecto social, al posibilitar el forta- lecimiento de los productores y la articulación entre actores sociales protagónicos en el sistema de semilla y en la vida comunitaria en torno a intereses comunes.

  18. Development of a Web application for a real time information system; Desarrollo de una aplicacion web para un sistema de informacion en tiempo real

    Energy Technology Data Exchange (ETDEWEB)

    Espinosa R, Alfredo; Silva F, Brisa M; Quintero R, Agustin [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2007-07-01

    In this article its is described a technique for the development of a Web application for a real time information system that allows the remote and concurrent connection of different equipment to the network historical data base of the system, without the need of the installation of any software component in the remote equipment of the user who makes the consultation. It defines and establishes the software architecture that allows the development of the Web application, the analysis stages, the operation of the technology to be used, as well as the design, development and implementation of the application. Finally, the accomplishments obtained with the development of the Web application for a real time information system are described. [Spanish] En este articulo se describe una tecnica para el desarrollo de una aplicacion web para un sistema de informacion en tiempo real, que permita la conexion remota y concurrente de diferentes equipos en la red a la base de datos historica del sistema, sin necesidad de que se instale ningun componente de software en el equipo remoto del usuario que realiza la consulta. Se define y establece la arquitectura de software que permite el desarrollo de la aplicacion web, las etapas de analisis, el funcionamiento de la tecnologia a utilizar, asi como el diseno, desarrollo e implementacion de la aplicacion. Finalmente, se describen los logros obtenidos con el desarrollo de la aplicacion web para un sistema de informacion en tiempo real.

  19. Trichinellosis una zoonosis vigente

    Directory of Open Access Journals (Sweden)

    Elsa Gabriela Chávez Guajardo

    2006-06-01

    Full Text Available .- En la presente revisión presentamos una panorámica de la Trichinellosis enfermedad parasitaria cosmopolita y de distribución mundial que afecta prácticamente a todos los mamíferos que su gravedad depende de la carga parasitaria, pero en sus huéspedes aunque no les cause la muerte si disminuye su calidad de vida que desafortunadamente, sigue siendo vigente en este nuevo siglo XXI.

  20. una sociedad emergente

    Directory of Open Access Journals (Sweden)

    Derlisiret Rincón M.

    2006-01-01

    Full Text Available Este trabajo busca reflexionar por una parte acerca del papel de la ciencia, la tecnología y la educación, como factores de desarrollo de las naciones e intenta responder la interrogante en torno al cómo estas variables contribuirán a la transformación de la realidad social venezolana. Los planteamientos expuestos en este artículo forman parte de una investigación cualitativa que se sustenta en una revisión teórica cuyos resultados indican que existe la posibilidad cierta de construir y alcanzar una Venezuela virtual en los próximos años; es decir, se vislumbra un país interconectado y funcionando a través de redes cuyos individuos estarían capacitados y entrenados en el uso y usufructo de las nuevas tecnologías. Esta visión de país, se basa en la premisa de que la oportuna implementación de la Planificación de Ciencia y Tecnología resultaría instrumento de vinculación de las variables tecnológicas, educativas y científicas, que permiten obtener conocimientos especializados y orientados a la solución de problemas de creciente dimensión global. Tales conocimientos, pudieran generar los cambios sustanciales necesarios en el contexto nacional, para lograr modificar o disminuir el sentido de crecimiento de la brecha o divisoria digital en este entorno

  1. una experiencia no formal

    Directory of Open Access Journals (Sweden)

    Peter J. Scott

    2008-01-01

    Full Text Available En este documento presentamos parte de un estudio en el que se ha analizado un proceso de aprendizaje desarrollado por estudiantes en interacción directa a través de un entorno de videoconferencia. El estudio cubre un periodo de 6 meses de interacción de un grupo de estudiantes de animación gráfica en diferentes países, quienes han llevado a cabo un total de 99 reuniones. Cada una de estas reuniones ha sido organizada y manejada por la propia comunidad de estudiantes. Al final, los integrantes de la comunidad aparecen como sus propios mentores naturales, y el grupo muestra una enorme capacidad de apoyo mutuo y de asunción de roles de facilitación mutua en el contexto de dicho intercambio. En este estudio podemos ver cómo los estudiantes pueden apoyarse mutuamente de manera eficiente en un contexto de colaboración no formal y además podemos observar cómo sistemas de videoconferencia en red pueden ayudar a facilitar y transformar una comunidad de aprendizaje, incluso sin la intervención formal de aulas o profesores.

  2. Hacia una vejez útil

    Directory of Open Access Journals (Sweden)

    Hernández Amparo

    1992-12-01

    Full Text Available

    Con lleva un interés bien particular encontrarnos con una población tan heterogénea en cuanto a caracterización se refiere, ya porque miremos en ella sus hábitos, sus costumbres, procedencia, nivel socio-cultural, etc., dicha comunidad de ancianos plantea, de inmediato la necesidad de ponerse en un contacto generacional que rompiera y dejara atrás la rutina y la monotonía, propia de su cotidianidad, es entonces cuando tres profesionales altamente motivadas en el trabajo comunitario, inician un proceso vivo y dinámico con el anciano institucionalizado a fin de que ellos recobraran el protagonismo, elevaran su autoestima, tomaran parte en la toma de decisiones frente a su vida, y volvieran a sentirse en capacidad de dar respuesta a sus conflictos, buscando alternativas de solución en una tarea mancomunada que exigió madurez, diálogo y comunicación permanente entre cada una de las partes involucradas en dicho proceso.

  3. The Calm AFTER the Storm: An Interview with Laura Bush about the Caring Power of the Gulf Coast School Library Recovery Initiative

    Science.gov (United States)

    Walker, Julie

    2012-01-01

    In 2005, a record breaking 26 named tropical storms including 13 hurricanes ravaged the Gulf Coast of the United States. In response to the devastation of hundreds of schools, the Laura Bush Foundation swiftly created The Gulf Coast School Library Recovery Initiative to help school libraries become fully functional and to offer the needed print…

  4. Guaianolides and a seco-Eudesmane from the Resinous Exudates of Cushion Bush (Leucophyta brownii) and Evaluation of Their Cytostatic and Anti-inflammatory Activity

    DEFF Research Database (Denmark)

    Hyldgaard, Mette G; Purup, Stig; Bond, Andrew D;

    2015-01-01

    A detailed phytochemical investigation of a dichloromethane extract of the resinous exudates of the cushion bush plant (Leucophyta brownii) resulted in the isolation of the new 8,12-guaianolides leucophytalins A (5) and B (6), the new 1,10-seco-eudesmane leucophytalin C (10), six rare 8,12-guaian...... (+)-germacrene A, and a biosynthetic pathway is proposed for these sesquiterpenoids....

  5. Characterization of African Bush Mango trees with emphasis on the differences between sweet and bitter trees in the Dahomey Gap (West Africa)

    NARCIS (Netherlands)

    Vihotogbe, R.

    2012-01-01

     African bush mango trees (ABMTs) are economically the most important species within the family of Irvingiaceae. They are priority trees producing non-timber forest products (NTFPs) and widely distributed in the humid lowland forests of West and Central Africa. To boost their production and dev

  6. Genetic diversity and difference within and between bitter and sweet African bush mango trees (Irvingia spp., Irvingiaceae) in West and Central Africa

    NARCIS (Netherlands)

    Vihotogbé, R.; Berg, van den R.G.; Missinhoun, A.A.; Sinsin, B.; Sosef, M.S.M.

    2015-01-01

    Economically important food tree species in sub-Saharan Africa should be domesticated to enhance their production within agro forestry systems. The African bush mango trees (Irvingia species) are highly preserved and integrated in agro forestry systems in tropical Africa. However, the taxonomic deba

  7. Contact sensitization to calocephalin, a sesquiterpene lactone of the guaianolide type from cushion bush (Leucophyta brownii, Compositae)

    DEFF Research Database (Denmark)

    Paulsen, Evy; Christensen, Lars P; Hindsén, Monica; Andersen, Klaus Ejner

    2013-01-01

    Cushion bush [Leucophyta brownii Cass. = Calocephalus brownii (Cass.) F. Muell.] is an Australian Compositae shrub that has been introduced into Scandinavia as a pot plant. The first case of sensitization occurred in a gardener, and the main allergen was identified as the guaianolide calocephalin....

  8. Restoring Equal Opportunity in Education: An Analysis of Arguments for and against the Bush Administration Single-Sex Education Regulations. Briefing Paper #C368

    Science.gov (United States)

    English, Ashley

    2009-01-01

    In 2006, the George W. Bush Administration issued new Title IX regulations that allow for sex-segregated classrooms and schools in public, non-vocational elementary and secondary schools. These regulations provide schools with another condition that allows them to provide sex-segregated programs as long as they meet an "important governmental…

  9. Creosote Bush (Larrea tridentata) Improves Insulin Sensitivity and Reduces Plasma and Hepatic Lipids in Hamsters Fed a High Fat and Cholesterol Diet

    Science.gov (United States)

    Del Vecchyo-Tenorio, Georgina; Rodríguez-Cruz, Maricela; Andrade-Cetto, Adolfo; Cárdenas-Vázquez, René

    2016-01-01

    Creosote bush, Larrea tridentata (Sesse y Moc. Ex DC, Zygophyllaceae) is a shrub found in the deserts of Northern Mexico and Southwestern United States. In traditional medicine, it is used to treat a variety of illnesses including type 2 diabetes. The present study aims to investigate the effects of creosote bush ethanolic extract on plasma and liver parameters associated with the metabolic syndrome in hamsters fed a high fat and cholesterol diet (HFD), comparing them with those induced by ezetimibe (EZ). Seven groups of six hamsters each were formed. Six groups were fed HFD for 2 weeks. The following 2 weeks, the HFD groups received: (1) only HFD, (2) HFD + 3 mg% EZ, (3) HFD + 0.2% creosote bush ethanolic extract, (4) only standard diet (Std Diet), (5) Std Diet + 3 mg% EZ, (6) Std Diet + 0.2% creosote bush ethanolic extract. The beneficial effects of creosote bush ethanolic extract in the HFD hamster model were a reduction of insulin resistance, associated with lower serum insulin and leptin, lower hepatic lipid peroxidation and higher liver antioxidant capacity. Plasma and liver lipids tended or were reduced to values closer to those of animals fed standard diet. A similar effect on lipids was induced by EZ, although with even lower hepatic cholesterol and total lipids concentrations. In general, the change from HFD to standard diet plus ethanolic extract induced the same but deeper changes, including a reduction in plasma glucose and an increase in the percentage of HDL cholesterol. Unlike creosote bush extract, EZ increased food consumption and neutral fecal steroids, with no significant effect on body weight, epididymal fat pads, liver peroxidation or antioxidant capacity. Also EZ did not modify serum insulin and leptin. However, insulin sensitivity improved to values similar to those induced by the extract. This suggests that the mechanism of action of creosote bush ethanolic extract is different to inhibition of cholesterol absorption or increase excretion

  10. Creosote Bush (Larrea tridentata) Improves Insulin Sensitivity and Reduces Plasma and Hepatic Lipids in Hamsters Fed a High Fat and Cholesterol Diet.

    Science.gov (United States)

    Del Vecchyo-Tenorio, Georgina; Rodríguez-Cruz, Maricela; Andrade-Cetto, Adolfo; Cárdenas-Vázquez, René

    2016-01-01

    Creosote bush, Larrea tridentata (Sesse y Moc. Ex DC, Zygophyllaceae) is a shrub found in the deserts of Northern Mexico and Southwestern United States. In traditional medicine, it is used to treat a variety of illnesses including type 2 diabetes. The present study aims to investigate the effects of creosote bush ethanolic extract on plasma and liver parameters associated with the metabolic syndrome in hamsters fed a high fat and cholesterol diet (HFD), comparing them with those induced by ezetimibe (EZ). Seven groups of six hamsters each were formed. Six groups were fed HFD for 2 weeks. The following 2 weeks, the HFD groups received: (1) only HFD, (2) HFD + 3 mg% EZ, (3) HFD + 0.2% creosote bush ethanolic extract, (4) only standard diet (Std Diet), (5) Std Diet + 3 mg% EZ, (6) Std Diet + 0.2% creosote bush ethanolic extract. The beneficial effects of creosote bush ethanolic extract in the HFD hamster model were a reduction of insulin resistance, associated with lower serum insulin and leptin, lower hepatic lipid peroxidation and higher liver antioxidant capacity. Plasma and liver lipids tended or were reduced to values closer to those of animals fed standard diet. A similar effect on lipids was induced by EZ, although with even lower hepatic cholesterol and total lipids concentrations. In general, the change from HFD to standard diet plus ethanolic extract induced the same but deeper changes, including a reduction in plasma glucose and an increase in the percentage of HDL cholesterol. Unlike creosote bush extract, EZ increased food consumption and neutral fecal steroids, with no significant effect on body weight, epididymal fat pads, liver peroxidation or antioxidant capacity. Also EZ did not modify serum insulin and leptin. However, insulin sensitivity improved to values similar to those induced by the extract. This suggests that the mechanism of action of creosote bush ethanolic extract is different to inhibition of cholesterol absorption or increase excretion

  11. La preparacion en ciencia de los candidatos a maestros del nivel elemental primario segun la reforma de la educacion cientifica en Puerto Rico: Una propuesta de secuencia curricular

    Science.gov (United States)

    Rodriguez Plaza, Evelyn

    El proposito de esta investigacion fue identificar los componentes de la preparacion en ciencia que deben recibir los estudiantes del Bachillerato en Artes en Educacion Elemental, Nivel Primario, de acuerdo a los documentos que dirigen la reforma de la educacion cientifica en Puerto Rico. Tambien, se identificaron los componentes de los cursos que forman parte de la preparacion en ciencia de estos estudiantes. Se compararon los componentes de la preparacion en ciencia y los componentes de los cursos para determinar congruencias y discrepancias. Con los datos recopilados se identificaron los componentes de los cursos de una secuencia curricular para la preparacion en ciencia de los candidatos a maestros del nivel elemental primario. La secuencia curricular que se propone en esta investigacion incluye cursos de contenido cientifico y de metodologia en la ensenanza de la ciencia disenados para satisfacer las necesidades de los candidatos. Se recomienda que en los procesos para el diseno, la implantacion y la evaluacion de estos cursos participen profesores de ciencia, profesores de educacion y maestros del nivel elemental primario. Todos los cursos de la secuencia curricular deben tener un enfoque constructivista. Las experiencias educativas que se incluyan en los cursos deben aspirar a desarrollar en los candidatos los atributos de la cultura cientifica y actitudes positivas hacia la ciencia y hacia la ensenanza de esta disciplina. El modelaje por parte de los profesores que ensenen los cursos de la secuencia curricular es fundamental en el desarrollo profesional de los candidatos. Se recomienda que en los cursos de contenido cientifico se estudien los conceptos y los conocimientos cientificos que forman parte del curriculo de Kindergarten a tercer grado de forma integrada y con una profundidad universitaria. Estos cursos deben tener un enfoque interdisciplinario e incluir el estudio de la naturaleza de la ciencia y un componente de laboratorio para desarrollar los

  12. COMPARISON OF THE USE OF PRIVATE MILITARY COMPANIES’ SERVICES BY THE ADMINISTRATIONS OF GEORGE W. BUSH AND BARACK OBAMA

    Directory of Open Access Journals (Sweden)

    Oldřich Bureš

    2011-12-01

    Full Text Available The article deals with the phenomenon of Private Military Companies (PMCs and their utilization by the United States of America (US. Its objective is the comparison of the use of PMC services by the administrations of President George W. Bush and President Barack Obama, respectively. It specifically focuses on the following four areas: capacity (numbers of PMCs deployed and the number of their employees, funding (costs of PMC services, regulation (its forms and laws covering PMCs, control and monitoring (supervision of PMCs and their staff by relevant public bodies. The main finding is that there have been few major changes in the use of PMCs’ services, which contradicts president Obama‘s rhetoric both before and after he assumed office.

  13. Crimes et châtiments dans le monde de la finance pendant les années Bush

    OpenAIRE

    Régine Hollander

    2010-01-01

    Le premier mandat de George W. Bush est ébranlé par une série de scandales dans le monde de l’entreprise et de la finance qui provoque une vague de réformes au sein du Congrès et des autorités de réglementation. La loi Sarbanes-Oxley, votée en 2002, a pour but d’accroître les contrôles financiers et de prévenir la fraude. Simultanément un dispositif répressif, destiné à prouver que le crime ne paie pas et à redonner confiance aux petits investisseurs, est mis en place. Les entreprises paient ...

  14. Khat: ¿Una nueva droga?/Khat: A new drug?

    Directory of Open Access Journals (Sweden)

    Aitor Curiel López de Arcaute (España

    2008-08-01

    Full Text Available Una nueve droga surgió el Barcelona procedente de África subsahariana interceptada en un vuelo con destino a Nueva York. La droga conocida como Khat no es una droga nueva, es una planta de la antigüedad que surge entre los arbustos de café y se cultiva en Etiopia y Yemen y en menos escala en Kenia, Tanzania, Madagascar y Uganda. En la actualidad muchas personas consumen Khat. El costo de esta raíz varía desde 1 euro hasta 600 euros por Kg. Los efectos de esta planta son similares a los de anfetamina que producen los ingredientes activos de esta raíz los cuales están prohibidos por la ONU y la OMS. A new drug emerged in Barcelona, coming from sub-Saharan Africa, intercepted on a flight bound for New York. The drug known as Khat is not a new drug, is a plant of antiquity that emerges in the coffee bushes and cultivated in Ethiopia and Yemen and less scale in Kenya, Tanzania, Madagascar and Uganda. Nowadays many people consume Khat. The cost of this root varies from 1 euro up to 600 euros per Kg. The effects of this plant are similar to amphetamine that produce the active ingredients of this root which are prohibited by the UN and the WHO.

  15. Reliability of the Brownish-flanked Bush Warbler’s soft song in male-male conflict

    Institute of Scientific and Technical Information of China (English)

    Canwei; Xia; Boye; Liu; Daiping; Wang; Huw; Lloyd; Yanyun; Zhang

    2015-01-01

    Background: Soft song is a low-amplitude song produced by many birds. Recent studies have confirmed that soft song is an aggressive signal. For example, the Brownish-flanked Bush Warblers Cettia fortipes use soft song in male-male conflicts, particularly prior to attacks. Although stable signaling systems require that signals be honest on average,models predict that cheating is an acceptable strategy for some individuals or in some contexts.Methods: This study aimed to test the reliability of soft song as an aggressive signal in the brownish-flanked bush warbler. We used mounted specimens accompanied by broadcast songs or soft songs to simulate a male attempting to invade an existing territory.Results: We found the mounted specimen that coupled playback of soft songs suffered more and quicker attacks from the territory owner and that the relationship between soft song and subsequent attack in the territory owner was far from perfect. We observed territory owners that both over-signaled(i.e., produced soft song but did not attack) and under-signaled(i.e., attacked without producing soft song). Under-signaling territory owners were relatively more commonly than were over-signaling territory owners, particularly in simulated intrusion that coupled playback of soft song with a mount specimen.Conclusions: We discuss the cost of producing soft song and the potential benefit of the unreliable use of soft song and propose a new hypothesis for under-signaling with soft song; i.e., under-signaling territory owners might benefit from taking the initiative in fights.

  16. Reliability of the Brownish-flanked Bush Warbler’s soft song in male-male conflict

    Institute of Scientific and Technical Information of China (English)

    Canwei Xia; Boye Liu; Daiping Wang; Huw Lloyd; Yanyun Zhang

    2015-01-01

    Background:Soft song is a low-amplitude song produced by many birds. Recent studies have confirmed that soft song is an aggressive signal. For example, the Brownish-flanked Bush Warblers Cettia fortipes use soft song in male-male conflicts, particularly prior to attacks. Although stable signaling systems require that signals be honest on average, models predict that cheating is an acceptable strategy for some individuals or in some contexts. Methods:This study aimed to test the reliability of soft song as an aggressive signal in the brownish-flanked bush warbler. We used mounted specimens accompanied by broadcast songs or soft songs to simulate a male attempting to invade an existing territory. Results:We found the mounted specimen that coupled playback of soft songs suffered more and quicker attacks from the territory owner and that the relationship between soft song and subsequent attack in the territory owner was far from perfect. We observed territory owners that both over-signaled (i.e., produced soft song but did not attack) and under-signaled (i.e., attacked without producing soft song). Under-signaling territory owners were relatively more commonly than were over-signaling territory owners, particularly in simulated intrusion that coupled playback of soft song with a mount specimen. Conclusions:We discuss the cost of producing soft song and the potential benefit of the unreliable use of soft song and propose a new hypothesis for under-signaling with soft song;i.e., under-signaling territory owners might benefit from taking the initiative in fights.

  17. Incesto: una plaga silenciada

    OpenAIRE

    Yamileth Ramírez Rodríguez

    2003-01-01

    Los costarricenses, hemos sido omisos ante los hechos incestuosos. Aun hoyes un tema tabú que suele silenciamos y por ende a veces quedan impunes. Cuando de investigación se trata, la cruda realidad es que la información es escueta, por lo que nos vimos obligados a acudir a la razón y a la experiencia de la humanidad en dicho campo, así como de nuestros despachos judiciales. El incesto es un crimen y constituye un abuso real en una relación de poder. De esta manera se dirá que el perpetrador ...

  18. Hacia una publicidad solidaria

    OpenAIRE

    Barcala Calvo, Ignacio; Matilla, Concepción

    2000-01-01

    Podemos decir que actualmente los medios de comunicación ejercen una enorme influencia sobre nosotros. Los informativos definen lo que es la realidad para buena parte de la población y la publicidad marca hábitos de consumo y crea actitudes ante la vida. Esta reflexión pretende analizar críticamente el modelo educativo que nos ofrece la publicidad, encaminado hacia la rentabilidad, la utilidad y el éxito de la sociedad de mercado, como valores primordiales que debemos mantener y proponer, des...

  19. una propuesta de indicadores

    Directory of Open Access Journals (Sweden)

    Noemí Luján Ponce

    2007-01-01

    Full Text Available La tecnología reviste características de neutralidad, eficiencia, transparencia y regularidad. Factores que hoy día resultan relevantes para realizar procesos electorales confiables. Las redistritaciones electorales en México 1996 y 2005 resultan casos paradigmáticos en relación a la cristalización de la tecnología como una mediación para la construcción de acuerdos entre los partidos y las autoridades electorales. Se ofrecen cinco indicadores para comparar ambos procesos de distritación.

  20. Una estudiante ejemplar

    OpenAIRE

    Esnaola Echaniz, Igor

    2012-01-01

    Duración (en horas): De 31 a 40 horas. Destinatario: Estudiante y Docente A finales de febrero de 2010, el tutor y profesor del grupo de Diversificación Curricular, Josu, tenía que decidir qué hacer para que una de sus alumnas, Amaia, mejorase en su rendimiento académico y comportamental, ya que la evaluación fue negativa; no tenía motivación para estudiar, su comportamiento era inadecuado para el aprendizaje y sus hábitos de ocio tampoco eran el mejor ejemplo para que su rendimiento acadé...

  1. Hacia una vejez útil

    OpenAIRE

    Hernández Amparo; Díaz María I.; Luna T. Leonor

    2010-01-01

    Con lleva un interés bien particular encontrarnos con una población tan heterogénea en cuanto a caracterización se refiere, ya porque miremos en ella sus hábitos, sus costumbres, procedencia, nivel socio-cultural, etc., dicha comunidad de ancianos plantea, de inmediato la necesidad de ponerse en un contacto generacional que rompiera y dejara atrás la rutina y la monotonía, propia de su cotidianidad, es entonces cuando tres profesionales altamente motivadas en el trabajo comunitario, ...

  2. Ecuador: una democracia inestable

    OpenAIRE

    Juan J. Paz y Miño Cepeda

    2009-01-01

    En 1979, tras una década de dictaduras militares, se inició la fase constitucional más larga en la historia del Ecuador. Ésta se levantó sobre las herencias del pasado y se caracterizó, de manera fundamental, por el tránsito desde un modelo estatal-desarrollista hacia uno de tipo empresarial, por el aparecimiento de nuevos agentes sociales, el multipartidismo político, la regionalización nacional, la presencia multicultural y la inserción del país en nuevas relaciones internacionales. Pero es...

  3. Utilization of the computational technic for the promotion and diffusion of the energy conservation practice; Utilizacion de tecnicas computacionales para promocionar y difundir el ahorro de energia

    Energy Technology Data Exchange (ETDEWEB)

    Kemper Valverde, N. [Laboratorio de Inteligencia Artificial, Instituto de Ingenieria, UNAM, Mexico D. F. (Mexico)

    1995-12-31

    In this paper are presented the developments obtained through the application of the new computational technologies in the diffusion and promotion tasks of energy efficient use and conservation. The most relevant aspects are described of three multimedia courses that were designed in order to increase the possibilities of offering personal training in efficient energy technic, as well as to have on hand totally open consulting and interactive tools. The courses that are described are: ``Design of Energy Conservation Programs for the Industry``, ``Energy Conservation in Combustion Equipment`` and ``Energy Cogeneration Technologies.`` On another subject, an analysis is also made of the possibilities for the development and application of expert systems that advise and give support to the work of technicians and engineers dedicated to energy conservation. The main characteristics of an expert system to give support to the energy analysis of lighting industrial systems, malls, buildings and hotels are also described. [Espanol] En este trabajo se presentan los desarrollos obtenidos por la aplicacion de las tareas de difusion y promocion del uso eficiente y ahorro de energia. Se describen los aspectos mas relevantes de tres cursos multimedia que fueron disenados con el objeto de incrementar las posibilidades de brindar capacitacion individualizada en tecnicas energeticas eficientes, asi como de contar con herramientas de consulta totalmente abiertas e interactivas. Los cursos que se describen son: ``Diseno de Programas de Ahorro de Energia en la Industria,`` ``Ahorro de Energia en Equipos de Combustion`` y ``Tecnologias de Cogeneracion de Energia.`` Por otro lado, tambien se hace un analisis de las posibilidades para el desarrollo y aplicacion de sistemas expertos que asesoren y apoyen el trabajo de tecnicos e ingenieros dedicados al ahorro de energia. Se describen las caracteristicas principales de un sistema experto disenado para brindar apoyo en analisis energeticos

  4. Una finestra sul polo

    Directory of Open Access Journals (Sweden)

    Graziella Busso

    2015-07-01

    Full Text Available Rabbia, dolore, incredulità si mescolano in un turbinio di emozioni quando, dalle affissioni che quasi quotidianamente si danno il cambio, si legge il necrologio di un “qualcuno” che sappiamo ucciso dal cancro. E pensiamo che, ancora e forse per tanto tempo, potremmo essere più fortunati. E non c’è pace, non c’è consolazione per quei giorni di vita vissuta, strappata, stropicciata, rubata da un mostro che non sempre è possibile sconfiggere finché non subentra la stanchezza, la rassegnazione, la secchezza delle ghiandole lacrimali. Unico strumento per cercare di “cambiare le cose”, per quanto difficile possa sembrare farlo, è combattere, perché la lotta per un ambiente più vivibile sarà una conquista per noi e per i nostri figli, un’eredità che non ha prezzo. La voglia di “gridare” la sofferenza di chi vive la realtà di uno sviluppo insostenibile si è da tempo trasformata ad Augusta in una battaglia di sensibilizzazione alla ormai annosa problematica e nel profondo desiderio di raccontare, far conoscere, testimoniare emozioni, desideri, sogni di chi vive in prima persona o ha vissuto la malattia di un proprio caro perché tutto questo possa servire a spingere verso quel mutamento culturale, storico, ambientale a cui tutti noi agogniamo.

  5. Una Colombia imaginada

    Directory of Open Access Journals (Sweden)

    Miguel A. Ramiro Avilés

    2014-01-01

    Full Text Available José Antonio Osorio Lizarazo, José Félix Fuenmayor y Manuel Francisco Sliger Vergara escribieron, respectivamente, Barranquilla 2132, Una triste aventura de 14 sabios y Viajes interplanetarios en Zepelines que tendrán lugar el año 2009. Se trata de tres novelas de ciencia ficción que fueron publicadas en Colombia en la década de 1930. En estas obras se perfila una Colombia imaginada, muchas veces deseada y, por suerte o desgracia, nunca alcanzada. El objetivo de este texto es presentar las propuestas de reforma política anunciadas por estos tres autores en sus obras de ciencia ficción, centrando la atención en la obra de José Antonio Osorio Lizarazo por ser la más compleja y elaborada de las tres, así como por estar directamente ligada al pensamiento político de Jorge Eliécer Gaitán.

  6. Una Colombia imaginada

    Directory of Open Access Journals (Sweden)

    Miguel A. Ramiro Avilés

    2013-12-01

    Full Text Available José Antonio Osorio Lizarazo, José Félix Fuenmayor y Manuel Francisco Sliger Vergara escribieron, respectivamente, Barranquilla 2132, Una triste aventura de 14 sabios y Viajes interplanetarios en Zepelines que tendrán lugar el año 2009. Se trata de tres novelas de ciencia ficción que fueron publicadas en Colombia en la década de 1930. En estas obras se perfila una Colombia imaginada, muchas veces deseada y, por suerte o desgracia, nunca alcanzada. El objetivo de este texto es presentar las propuestas de reforma política anunciadas por estos tres autores en sus obras de ciencia ficción, centrando la atención en la obra de José Antonio Osorio Lizarazo por ser la más compleja y elaborada de las tres, así como por estar directamente ligada al pensamiento político de Jorge Eliécer Gaitán.

  7. Estudio comparativo entre la facoemulsificacion convencional coaxial y la tecnica bimanual microincisional en la cirugia de la catarata

    OpenAIRE

    Anglada i Escalona, J. Ramon

    2015-01-01

    Justificación: La cirugía bimanual (MICS) de la catarata tiene como características básicas la separación de funciones y el concepto de mínima agresión. Se explican las claves para la transición quirúrgica desde la técnica coaxial convencional. Metodología: Estudio prospectivo y comparativo de 222 procedimientos quirúrgicos con un año de seguimiento. Para cada una de las técnicas se seleccionaron diferentes grupos, tal como se especifica: 3 grupos de cirugía coaxial, con incisiones de 3.2...

  8. Una vita per il design

    OpenAIRE

    Malcovati, Silvia

    2008-01-01

    Recensione della mostra "Scoprire il design. La collezione Alexander von Vegesack", Pinacoteca Agnelli, Torino, 20 marzo - 6 luglio 2008. L'esposizione è prima ancora che una mostra sul design, una mostra sul collezionismo, sulle sue ragioni, sulle scelte e sul senso dell'esporre. La collezione von Vegesack è, infatti, una collezione particolare, che si potrebbe definire "biografica", o "esistenziale", nella misura in cui non è classificabile se non in stretta relazione con il suo proprietari...

  9. Una propuesta de gimnasia funcional

    OpenAIRE

    Pagola, Laura

    2011-01-01

    Este trabajo se propone mostrar una clase de Gimnasia, considerando a esta como una práctica corporal, socialmente significativa, con principios que la caracterizan como su intencionalidad, la que fue variando a lo largo de la historia, y una sistematicidad que le permite conseguir objetivos puntuales para ajustar la actuación corporal a situaciones diversas y cambiantes. Teniendo en cuenta, especialmente las particularidades del sujeto con su historia, que va a determinar la forma de mov...

  10. Mucormicosis: Una micosis emergente

    Directory of Open Access Journals (Sweden)

    Iris Tiraboschi

    2012-02-01

    Full Text Available El objetivo de este trabajo es presentar la incidencia, frecuencia, características clínicas y evolución de los pacientes con mucormicosis atendidos en el Hospital de Clínicas José de San Martín, Universidad de Buenos Aires, entre los años 1982 y 2010. Durante ese período se diagnosticaron 10 casos de mucormicosis. Los tres primeros entre 1982 y 2004 y los últimos 7 entre 2005 y 2010. La incidencia y frecuencia de esta enfermedad, para el período 1980-2004 fue 0.13 pacientes/año y 0.1 casos/10 000 egresos (IC 95%: 0.00 a 0.3 respectivamente. En el período 2005-2010 la incidencia fue 0.86 pacientes/año y la frecuencia de 1.1 casos/10 000 egresos (IC 95%: 0.5 a 2.4. Hubo nueve casos de mucormicosis rinosinuso-orbitaria, siete en pacientes con diabetes mellitus, uno en una paciente con una hemopatía maligna y neutropenia, y el restante en un paciente con HIV/sida que además estaba neutropénico y con un síndrome hemofagocítico. En una paciente se realizó el diagnóstico post mortem de mucormicosis pulmonar. El diagnóstico se efectuó por la observación de filamentos cenocíticos en los diez casos. Hubo desarrollo de mucorales en los cultivos de 8/9 pacientes; cinco Rhizopus spp y tres Mucor spp. Todos los pacientes recibieron un tratamiento inicial con anfotericina B deoxicolato, que en tres de ellos fue continuado con anfotericina B liposomal, y cirugía. Tres enfermos recibieron además un tratamiento adyuvante con oxigeno hiperbárico. La mortalidad fue 30%.

  11. Una historia muy simple

    OpenAIRE

    Miha Mazzini

    2009-01-01

    Voy a contarles una historia muy simple. Probablemente no les parecerá nada espe- cial y no quiero robarles tiempo, así que voy a tratar de hacerlo lo más rápido posible. Me inscribí en psicología porque eso hizo mi mejor amiga. Éramos compañeras desde jardín de infantes y siempre la seguí en todo. En tercer año de facultad conoció a su novio y continuó sus estudios en otro país; por primera vez no podía seguirla. Cuando rendí todos los exámenes, el profesor me preguntó si estaba interesa...

  12. Una crisis financiera estructural

    Directory of Open Access Journals (Sweden)

    Pierre Salama

    2010-01-01

    Full Text Available El autor sostiene que la crisis económica que estalló a mediados del 2008 en los países industrializa-dos y que rápidamente contagió a todas las economías del mundo, no tiene un origen exclusivo en las desregulaciones del mercado financiero. Aunque estas sin duda han precipitado y amplificado la crisis, es fundamental considerar la globalización financiera y comercial que ha marcado los regíme-nes de crecimiento económico. Es esta globalización la que ha provocada la deslocalización de la producción –a favor de China– y una consecuente pérdida de empleos y atonía de los salarios. Des-de esta perspectiva terminar la crisis requerirá más que una restructuración de la arquitectura financiera, será necesario modificar la desregularización financiera y comercial.The author maintains that the economic crisis that broke out in mid-2008 in industrialized countries and quickly spread to economies throughout the world does not have its origins solely in deregula-tion of the financial market. Though this clearly precipitated and has broadened the crisis, it is essential to consider the financial and commercial globalization that has marked regimes of economic growth. This is the globalization that has provoked the dislocation of production – in favor of China – and the consequent loss of jobs and stagnation of salaries. From this perspective, an end to the crisis will require more than a restructuring of financial architecture; what will be needed is change in financial and commercial deregulation.

  13. Una agenda para educadores

    Directory of Open Access Journals (Sweden)

    Robert O. McClintock

    2007-01-01

    Full Text Available Las instituciones educativas constituyen los principales factores en la construcción social de un nuevo sistema educativo. Las escuelas y los educadores controlan y producen propiedad intelectual de una extraordinaria profundidad y amplitud. Los cambios producidos por las tecnologías digitales están consiguiendo que el acceso y la producción de conocimiento sea más accesible y universal. Lo que es, a la vez, un gran logro de apertura curricular, pero también un grave peligro de perder la perspectiva eminentemente “educativa” de la transmisión del conocimiento en la escuela. Los nuevos recursos permiten a los educadores romper el ciclo de reproducción en los logros educativos, acercarse al medio y a la familia y transformar la escuela. Los educadores y las escuelas deben asumir el reto de constituir comunidades de aprendizaje. Así como de atreverse a producir y difundir ese conocimiento con soporte digital. Lo contrario sería una terrible abdicación. El artículo traza un recorrido histórico sobre esta función de la escuela y su adaptación a los medios y recursos de cada época. Tras lo cual, aboga por asumir el desafío actual de las TICs, para renovar el vínculo progresista con la posteridad y construir un mejor futuro. Los nuevos recursos permiten a los educadores romper el ciclo de reproducción en los logros educativos, acercarse al medio y a la familia y transformar la escuela.

  14. Pt{sub X}Ru{sub Y}Ir{sub Z} as a bifunctional electrocatalyst for oxygen reduction reaction in a PEM fuel cell; Pt{sub X}Ru{sub Y}Ir{sub Z} como electrocatalizador bifuncional para la reaccion redox del oxigeno en una celda tipo PEM

    Energy Technology Data Exchange (ETDEWEB)

    Morales, L.; Fernandez, A.M. [Centro de Investigacion en Energia, Universidad Nacional Autonoma de Mexico, Temixco, Morelos (Mexico)]. E-mail: limos@cie.unam.mx; Cano, U. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2009-09-15

    Barrido, Difraccion de Rayos X y composicion mediante las tecnicas de Fluorescencia y Espectroscopia de Energia Dispersa de Rayos X. Los Resultados mostraron un desplazamiento en los picos de Difraccion de Rayos X para la Muestra A en los correspondientes al Ir y Pt, y desplazamiento para la Muestra B. en los picos de Ru e Ir Estos cambios sugieren la posible formacion de una Solucion Solida por Sustitucion. Se realizaron estudios de Voltamperometria Ciclica y Lineal para la Reaccion de Reduccion y Desprendimiento de Oxigeno por separado. El analisis electroquimico ha mostrado un mejor comportamiento cinetico al combinar los tres metales bajo la composicion de la muestra B.

  15. 精密模具中粘接型导套的应用%Application of the Bonding-Typed Guide Bushes in Precision Dies

    Institute of Scientific and Technical Information of China (English)

    吴水勇

    2001-01-01

    模具加工过程中,固定导套通常采用的工艺是通过过盈配合将导套压入导套固定板的方法,即压入法。但此方法用于精密模具 (如电机定转子叠铆模 )则有一定的弊端,用胶水粘接导套的方法可适用于精密模具。%In the processing of dies, the technological process usually adopted for matching the guide bushes is the overfilling method, namely the pressing- in method. But it is not suit for precision dies, such as the folding and riveting die for the stators and rotators of motors. For precision dies, the method of bonding the guide bushes with glue is applicable.

  16. Tracking discourse complexity preceding Alzheimer's disease diagnosis: a case study comparing the press conferences of Presidents Ronald Reagan and George Herbert Walker Bush.

    Science.gov (United States)

    Berisha, Visar; Wang, Shuai; LaCross, Amy; Liss, Julie

    2015-01-01

    Changes in some lexical features of language have been associated with the onset and progression of Alzheimer's disease. Here we describe a method to extract key features from discourse transcripts, which we evaluated on non-scripted news conferences from President Ronald Reagan, who was diagnosed with Alzheimer's disease in 1994, and President George Herbert Walker Bush, who has no known diagnosis of Alzheimer's disease. Key word counts previously associated with cognitive decline in Alzheimer's disease were extracted and regression analyses were conducted. President Reagan showed a significant reduction in the number of unique words over time and a significant increase in conversational fillers and non-specific nouns over time. There was no significant trend in these features for President Bush. PMID:25633673

  17. Boumediene v. Bush and the extraterritorial reach of the U.S. Constitution
    A step towards judicial cosmopolitanism?

    OpenAIRE

    Jean-Marc Piret

    2008-01-01

    In this article I analyse the Supreme Court’s landmark ruling in Boumediene v. Bush against the background of the discussion concerning the extraterritorial scope of the U.S. Constitution. The long-standing discussion about the scope of constitutional rights is situated within the theoretical framework elaborated by Gerald Neuman who distinguishes between membership models, universalism, ‘global due process’ and the model of ‘mutual obligations’. The last model, which is based on a limited go...

  18. 柴油发动机无衬套摇臂开发%Development of Bushing-free Rocker Arm for Diesel Engine

    Institute of Scientific and Technical Information of China (English)

    闫峰; 赵天安; 崔晓娟; 李文祥; 侯福建

    2015-01-01

    This paper analyzes the cause of performance degradation of engine braking with blue and white smoke emitting during cold start of a diesel engine during use, it is found that root cause of this failure is the excessive wear of the exhaust rocker arm bushing. Further analysis confirms that the type of rocker arm integrated engine braking is the main factor of excessive wear of the bushing. The existing design of the bushing is improved by comparative wear test and finite element analysis, with measures like bushing-free design of exhaust rocker arm, optimized design of exhaust rocker arm structure. Rig test and road test verify that the modification achieves obvious effect, satisfying the requirement of the user.%针对某柴油机工作中频繁出现的发动机制动性能下降、冷起动冒蓝白烟问题进行分析,确定故障主要原因是排气摇臂衬套过度磨损。进一步分析确认,该柴油机采用的摇臂集成式发动机制动工作模式是衬套过度磨损的主要因素。采用对比磨损试验和有限元分析方法对现有设计进行改进,其措施包括排气摇臂无衬套设计、排气摇臂结构优化设计等。台架对比试验及道路试验验证表明,改进方案效果明显,该柴油机可满足用户使用要求。

  19. EFECTO DE LA ALTURA DEL MANGUITO EN UNIONES SOLDADAS EN CAÑERÍAS DE COBRE BUSHING HEIGHT EFFECT IN SOLDERED COPPER PIPE JOINTS

    Directory of Open Access Journals (Sweden)

    Víctor Carmona

    2006-12-01

    Full Text Available Se perforó un tubo de cobre de 28,6 mm de diámetro, por el proceso de taladrado por fluencia térmica (TFT. Se prepararon manguitos de diferentes alturas, haciendo un preperforado con brocas convencionales HSS de diferentes diámetros. Se seleccionaron manguitos de dos alturas diferentes. Se determinó la circularidad de la perforación. Se soldó un tubo cobre de ø 12,7 mm en forma perpendicular a un tubo de cobre de ø 28,6 mm y se determinó la resistencia a la tracción de la unión soldada, para lo cual se diseñó un dispositivo mecánico que fue adaptado en la máquina universal de ensayos. Se hicieron ensayos de microdureza y metalografía de la unión. Se concluyó que el manguito de menor altura es suficiente para que la unión alcance la máxima resistencia.Copper tubes were drilled with thermal flow drilling. Conventional HSS drills diameters were used to make pre drilling holes. Different height bushings were made. Two of the bushing heights were selected. The bushing circularity was measured. A ø 12,7 mm tube was welded perpendicularly on a ø 28,6 mm tube. A especial support device was designed and it was adapted to the Universal Test Machine, to determine the tensile stress of the brazing joint. The micro hardness and metallographic test were made in the brazing zone. As a conclusion the lower height bushing is enough to reach the maximum resistance.

  20. Characterization of African Bush Mango trees with emphasis on the differences between sweet and bitter trees in the Dahomey Gap (West Africa)

    OpenAIRE

    Vihotogbe, R.

    2012-01-01

     African bush mango trees (ABMTs) are economically the most important species within the family of Irvingiaceae. They are priority trees producing non-timber forest products (NTFPs) and widely distributed in the humid lowland forests of West and Central Africa. To boost their production and develop them towards a major crop for rural communities in Africa, a domestication program was initiated in the 2000s which is being coordinated by the World Agroforestry Centre. ABMTs belong to two t...

  1. Una revista distinta: Ellas

    Directory of Open Access Journals (Sweden)

    Requena Hidalgo, Cora

    2014-06-01

    Full Text Available This article focuses on the women’s magazine Ellas, published in the mid-nineteenth century in Madrid, and discusses its relationship with other approximately contemporary magazines and newspapers in order to contribute to a reconstruction of the history of women’s publications in the Spanish press. The approach is based on an analysis of the text of each issue of the magazine and comparison with other publications, where applicable. Key features of the article include a reflection on the social rights of women, an attempt to analyse the main differences between women and men and defining features of sexual gender, the need for women’s education, etc. Studying the magazine’s content clearly reveals a continual tension between progressive and conservative ideas typical of the historical context in which gender studies emerged in Spain.Este artículo centra su atención en la revista para mujeres Ellas, publicada a mediados del siglo XIX en Madrid. Analiza, asimismo, la relación de esta publicación con algunas otras revistas y periódicos de su contexto histórico próximo, con el fin de contribuir a la reconstrucción de una Historia de las publicaciones para mujeres en la prensa española. Para ello se utiliza el análisis de textos que forman parte de los números que componen la revista, así como el análisis comparativo entre publicaciones, cuando es pertinente. Entre los aspectos de mayor interés que el artículo pone de relieve se encuentra la reflexión sobre los derechos sociales de las mujeres, el intento de análisis de las principales diferencias entre mujeres y hombres y de los rasgos definitorios de los géneros sexuales, la necesidad de educación de las mujeres, entre otros. El estudio del contenido de la publicación revela claramente una tensión contradictoria continua entre las ideas progresistas y las ideas conservadoras propias del momento histórico que dieron origen en España al nacimiento de los estudios de género.

  2. HACIA UNA ORGANIZACIÓN QUE APRENDE: UNA EXPERIENCIA CUBANA

    OpenAIRE

    Armando Cuesta Santos

    2004-01-01

    Se enuncian principios y atributos relativos a la organización que aprende, haciéndose consideraciones sobre su aplicación al adoptarse una definición y arribar a una conducción metodológica buscando hacerla viable en la practica empresarial cubana. Ofrecer una reseña sobre tal viabilidad con las experiencias adquiridas reflejando peculiaridades, constituye el objetivo central de este trabajo, reali...

  3. de una lengua extranjera

    Directory of Open Access Journals (Sweden)

    Félix Mendoza Martínez

    2006-01-01

    Full Text Available La enseñanza de las lenguas extranjeras atraviesa hoy por lo que consideramos una “nueva crisis del desarrollo”. Nos referimos al hecho de que, no obstante los avances experimentados en el campo de la psicopedagogía, los resultados del proceso de enseñanza-aprendizaje de dichas lenguas, en términos tanto de eficiencia terminal como de calidad del dominio de habilidades comunicativas, distan mucho de ser satisfactorios. La utilización del enfoque comunicativo y la adopción de un abordaje constructivista de este proceso parecen no estar aún en condiciones de resolver esta “crisis”. En este trabajo se trata de analizar esta situación a la luz de la concepción vygotskiana, y más concretamente, de la teoría de la dirección de la asimilación de P. Y. Galperin (1959, 1966, y se propone un modelo de intervención pedagógica que podría coadyuvar a resolver esta problemática.

  4. Boumediene v. Bush and the extraterritorial reach of the U.S. Constitution A step towards judicial cosmopolitanism?

    Directory of Open Access Journals (Sweden)

    Jean-Marc Piret

    2008-12-01

    Full Text Available In this article I analyse the Supreme Court’s landmark ruling in Boumediene v. Bush against the background of the discussion concerning the extraterritorial scope of the U.S. Constitution. The long-standing discussion about the scope of constitutional rights is situated within the theoretical framework elaborated by Gerald Neuman who distinguishes between membership models, universalism, ‘global due process’ and the model of ‘mutual obligations’. The last model, which is based on a limited government perspective tends towards the ideal of judicial cosmopolitanism. I argue that Justice Kennedy’s opinion for the Court does not live up to the cosmopolitan ideal of the model of mutual obligations as it was elaborated in Justice Brennan’s dissent in Verdugo and that Kennedy’s casuistic and flexible approach lends itself to possible manipulation. I argue that this danger can be reduced by adopting the minimum standards of international law as a second order framework for constitutional interpretation and I show that the ethical nexus between effective control and responsibility is common to the normative model of mutual obligations, on the one hand, and to the framework adopted in European human rights law and international humanitarian law, on the other.

  5. Genetic variation coincides with geographic structure in the common bush-tanager (Chlorospingus ophthalmicus) complex from Mexico.

    Science.gov (United States)

    García-Moreno, Jaime; Navarro-Sigüenza, Adolfo G; Peterson, A Townsend; Sánchez-González, Luis A

    2004-10-01

    Cloud forests are distributed in the Neotropics, from northern Mexico to Argentina, under very specific ecological conditions, namely slopes with high humidity input from clouds and mist. Its distribution in Mesoamerica is highly fragmented, similar to an archipelago, and taxa are thus frequently represented as sets of isolated populations, each restricted to particular mountain ranges and often showing a high degree of divergence, both morphologically and genetically. The common bush-tanager (Chlorospingus ophthalmicus, Aves: Thraupidae) inhabits cloud forests from eastern and southern Mexico south to northwestern Argentina. Here we use 676bp of mtDNA (around the ATPase 8 gene) to explore the genetic variation and phylogeographic structure of the Mexican populations of C. ophthalmicus. Phylogenetic analyses of mtDNA sequences indicate deep genetic structure. Five major clades, which segregate according to geographic breaks, are identified (starting from the deepest one in the phylogeny): (1) Southern Chiapas and Northern Central America, (2) Tuxtlas massif, (3) Sierra Madre del Sur, (4) Eastern Oaxaca and Northern Chiapas, and (5) Sierra Madre Oriental. The long history of isolation undergone by each clade, as suggested by the phylogeny, implies that the species status of each of them should be revised. PMID:15324847

  6. Simulation of Water Use Dynamics by Salix Bush in a Semiarid Shallow Groundwater Area of the Chinese Erdos Plateau

    Directory of Open Access Journals (Sweden)

    Jinting Huang

    2015-12-01

    Full Text Available This study analyzed the water use of the Salix psammophila bush in a semi-arid area in northwest China using a Hydrus-1D model. The model incorporated the effect of thermally driven water flow coupling liquid water, water vapor and heat transport. The model was calibrated and validated using hourly field measurements of soil water content and temperature at different depths for a growing season of 154 days. Furthermore, another Hydrus-1D model was established to simulate environments with decreased heat, rainfall or temperature and an increased leaf area index using calibrated and validated parameters. Our results show that upward and downward thermally driven water vapor fluxes account for 0.11% and 0.28%, respectively, of the corresponding direction of total water flux during the bush’s growing season. Although the vapor flux is very small, simulations incorporating heat flow revealed alterations in the temperature and pressure head gradients over the root zone, especially during dry periods. Consequently, the cumulative contributions of groundwater to evapotranspiration (ETg with heat flow and without heat flow were 26.9% and 40.6%, respectively, during the simulation period. Therefore, the cumulative contribution of groundwater to ETg is overestimated when heat flow is excluded. Thus, we recommended that heat transport be incorporated when evaluating ETg in arid and semi-arid areas.

  7. The improvement of Phaseolus vulgaris as a grain legume crop in Malaysia: Induction of an erect bush type

    International Nuclear Information System (INIS)

    A programme to improve on an introduced variety of dry bean was started in 1980. The variety is an indeterminate climber and the aim is to produce an erect bush type using the technique of mutation induction by gamma rays from a 60Co source. From the results of preliminary studies carried out under greenhouse and field conditions, a procedure for handling the M1 and M2 generations has been developed. A total of 2,264 cell initials irradiated with 30 Krads has been screened. A number of possible mutants have been selected from the single seed bulk (Bsub(s)) and the single pod bulk (Bsub(p)) of the M2 generation. These mutants are being tested in the field as progeny rows of the M3 generation. In addition, the paper discusses plant architecture, the current knowledge of the genetics of the characters which contribute to the architecture of the plant, its relationship to yield and breeding, and the breeding strategies that should be adopted in this programme. (author)

  8. Molecular phylogeny of African bush-shrikes and allies: tracing the biogeographic history of an explosive radiation of corvoid birds.

    Science.gov (United States)

    Fuchs, Jérôme; Irestedt, Martin; Fjeldså, Jon; Couloux, Arnaud; Pasquet, Eric; Bowie, Rauri C K

    2012-07-01

    The Malaconotidea (e.g., butcherbirds, bush-shrikes, batises, vangas) represent an Old World assemblage of corvoid passerines that encompass many different foraging techniques (e.g., typical flycatchers, flycatcher-shrikes, canopy creepers, undergrowth skulkers). At present, relationships among the primary Malaconotidea clades are poorly resolved, a result that could either be attributed to a rapid accumulation of lineages over a short period of time (hard polytomy) or to an insufficient amount of data having been brought to bear on the problem (soft polytomy). Our objective was to resolve the phylogenetic relationships and biogeographic history of the Malaconotidea using DNA sequences gathered from 10 loci with different evolutionary properties. Given the range of substitution rates of molecular markers we sequenced (mitochondrial, sex-linked, autosomal), we also sought to explore the effect of altering the branch-length prior in Bayesian tree estimation analyses. We found that changing the branch-length priors had no major effect on topology, but clearly improved mixing of the chains for some loci. Our phylogenetic analyses clarified the relationships of several genera (e.g., Pityriasis, Machaerirhynchus) and provide for the first time strong support for a sister-group relationship between core platysteirids and core vangids. Our biogeographic reconstruction somewhat unexpectedly suggests that the large African radiation of malaconotids originated after a single over-water dispersal from Australasia around 45-33.7 mya, shedding new light on the origins of the Afrotropical avifauna. PMID:22475817

  9. Introduction criteria and concepts on energy saving in the technical standards for electric installations; Introduccion de criterios y conceptos de ahorro de energia en las normas tecnicas para instalaciones electricas

    Energy Technology Data Exchange (ETDEWEB)

    Rincon Nader, Jorge A. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1992-12-31

    The project Introduction Criteria and Concepts on Energy Saving in the Technical Standards for electric installations, is described, whose immediate objective is to recommend and in some cases regulate the use of energy saving equipment and devices and the adoption of attitudes and procedures that convey into saving, and the rational and efficient use of the electric energy. [Espanol] Se describe el proyecto Introduccion de Criterios y Conceptos de Ahorro de Energia en las Normas Tecnicas para instalaciones electricas, que tiene como objetivo inmediato recomendar, y en algunos casos reglamentar el uso de equipos y dispositivos ahorradores y la adopcion de actitudes y procedimientos que conduzcan a un ahorro y uso racional y eficiente de la energia electrica.

  10. Una visita en Sud America

    Science.gov (United States)

    1982-09-01

    Oisfrute de una estadfa en el Hotel La Silla, el mejor hotel de Sud America con su tan unica atmosfera extraterrestre! Los espera su calificado personal de experimentados hoteleros, jefes de cocina, etc., ansiosos todos de satisfacer sus deseos hasta el mas mfnimo detalle. Naturalmente nuestro espacioso restaurant de tres estrellas ofrece un completo surtido de exquisitas comidas y deliciosos tragos (conocedores usualmente eligen "Oelicia Orion" 0 "Centauro Especial"). EI servicio cempleto durante 24 horas incluye nuestra ya mundialmente famosa "Cena de medianoche para los miradores de estrellas", por eso - no olvide: No pierda la oportunidad de una estadfa en EL HOTEL LA SILLA - una experiencia maravillosa!

  11. una perspectiva poskeynesiana

    Directory of Open Access Journals (Sweden)

    Carlos Guerrero de Lizardi

    2006-01-01

    Full Text Available Para analizar el crecimiento económico de nuestro país entre 1929 y 2003 proponemos dos modelos de inspiración poskeynesiana. El primero enfatiza el papel de las elasticidades ingreso de las exportaciones e importaciones y la dinámica económica del resto del mundo. El segundo adiciona las elasticidades precio de las exportaciones e importaciones, los flujos netos de capital y los términos de intercambio. El documento está orientado a la estimación econométrica de los muchos parámetros en cuestión. Algunos resultados son los siguientes. En primer lugar la dinámica económica observada a lo largo del período estudiado y distintos subperíodos es repetidamente inferior al crecimiento económico consistente con una cuenta corriente cero. Como consecuencia, se espera que la proporción entre el crecimiento económico de México y Estados Unidos disminuirá en los próximos años. En segundo lugar, la economía mexicana valida la condición Marshall-Lerner por lo que, según nuestra segunda especificación, el efecto del tipo de cambio real sobre el nivel de actividad productiva es definitivamente positivo. Por último, sólo a partir de 1996 encontramos un reducido efecto positivo de los influjos de capital sobre la evolución del producto interno bruto (PIB.

  12. Incesto: una plaga silenciada

    Directory of Open Access Journals (Sweden)

    Yamileth Ramírez Rodríguez

    2003-03-01

    Full Text Available Los costarricenses, hemos sido omisos ante los hechos incestuosos. Aun hoyes un tema tabú que suele silenciamos y por ende a veces quedan impunes. Cuando de investigación se trata, la cruda realidad es que la información es escueta, por lo que nos vimos obligados a acudir a la razón y a la experiencia de la humanidad en dicho campo, así como de nuestros despachos judiciales. El incesto es un crimen y constituye un abuso real en una relación de poder. De esta manera se dirá que el perpetrador puede ser un padre, padrastro, madre, abuelo, tío, hermanos, primos, sobrinos, etc. Pero se pretenderá dejar las bases para que esta terminología se pueda ampliar mas allá de la existencia del parentesco en línea directa.In Costa Rica, we have been omitted before acts of incest. For example, today it is still a taboo issue that keeps us in silence and that is part of the reason why this crime is still without punishment. When we investigate this topic, we find a hard reality: we do not have statistics; which is why we have to use the experiences of other people and our experience in the judicial bureau. Incest is a crime and a definite abuse in a relationship of power. In this manner, we are going to say that the perpetrator could be the father, stepfather, mother, grandpa, uncle, brothers, cousins, nephews, etc. In this essay we give the guidelines to extend this terminology and extend it to the existing familiar line of direct relatives.

  13. Design and implementation of a rotational radiotherapy technique for breast cancer treatment and their comparison with 3-D-Crt irradiation technique; Diseno e implementacion de una tecnica de radioterapia rotacional para tratamiento de cancer de mama y su comparacion contra la tecnica 3D-CRT de irradiacion

    Energy Technology Data Exchange (ETDEWEB)

    Gutierrez M, J. G.; Lopez V, A.; Rivera M, T. [IPN, Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, Av. Legaria 694, Col. Irrigacion, 11500 Mexico D. F. (Mexico); Velazquez T, J. J.; Adame G, C. S. [Centro Medico Nacional Siglo XXI, Hospital de Oncologia, Departamento de Fisica Medica, Av. Cuauhtemoc No. 330, Col. Doctores, 06720 Mexico D. F. (Mexico); Rubio N, O.; Chagoya G, A.; Hernandez G, J. C., E-mail: jggm25@yahoo.com.mx [Centro Medico Nacional Siglo XXI, Hospital de Oncologia, Departamento de Radioterapia, Av. Cuauhtemoc No. 330, Col. Doctores, 06720 Mexico D. F. (Mexico)

    2015-10-15

    Breast cancer is one of oncological diseases worldwide, as well in Mexico, which causes even more deaths than cervical cancer; this condition is the second death cause in women aged 30-54 years and threatens all socio-economic groups. The treatment is highly dependent on the stage which is detected and based on protocols that include a combination of surgery, chemotherapy and radiotherapy. This paper studies the main irradiation technique for patients with mastectomy, breast full cycle (irradiation of the chest well and supraclavicular nodes) in their mode Three Dimensional - Conformal Radiation Therapy (3-D-Crt), and compared with the Volumetric Modulated Arc Therapy (VMAT) technique proposed in this paper. In both techniques the prescription was 50 Gy divided into 25 fractions. The techniques were applied in three female patients (being an initial study) with disease of the left side, the target volume and organs at risk were delineated by the medical treating radiation oncologist, the planning system used was Eclipse version 10; for quantitative comparison of both plans indexes of homogeneity were used, con formality, the target volume coverage and normal tissue, sub factors and overdosing, the conformation number and coverage quality. They were evaluated and compared the media, maximum and minimum dose of the organs at risk, based on the fact that the coverage of the target volume, dose gradient and dose at risk organs are acceptable (prescription dose greater that 90% coverage, gradient less that 20% and organs at risk in accordance with the Quantec limitations for both versions). (Author)

  14. Tecnica di densificazione attraverso la strategia delle centralità urbane di parti di città. Ricerca Spinner 2013. Progettare il costruito: nuovi modelli a qualità integrata per la città compatta. Politiche di rigenerazione e struttura delle centralità urbane nel contesto delle città dell’Emilia Romagna.

    OpenAIRE

    Montini, Nicola

    2015-01-01

    La tesi adotta e sperimenta la tecnica di densificazione attraverso la strategia delle centralità all’interno di contesti urbani di medie dimensioni. Il campo di analisi applicata prescelto è composto dalle dieci città capoluogo di provincia della Regione Emilia Romagna. Il carattere dominante delle città contemporanee, riscontrabile anche nelle città emiliano-romagnole, è la dispersione della forma. Lo sviluppo diffuso della città contemporanea è stato alimentato nell’ultimo ventennio da...

  15. Tecnica di densificazione attraverso la strategia delle centralità urbane incentrate su un sistema di relazione policentrico.Ricerca Spinner 2013. Progettare il costruito: nuovi modelli a qualità integrata per la città compatta. Politiche di rigenerazione e struttura delle centralità urbane nel contesto delle città dell’Emilia Romagna.

    OpenAIRE

    Nolli, Annapaola

    2015-01-01

    La tesi adotta e sperimenta la tecnica di densificazione attraverso la strategia delle centralità all’interno di contesti urbani di medie dimensioni. Il campo di analisi applicata prescelto è composto dalle dieci città capoluogo di provincia della Regione Emilia Romagna. Il carattere dominante delle città contemporanee, riscontrabile anche nelle città emiliano-romagnole, è la dispersione della forma. Lo sviluppo diffuso della città contemporanea è stato alimentato nell’ultimo ventennio da...

  16. L’évolution de l’affirmative action aux États-Unis sous la présidence de George W. Bush Evolution of Affirmative Action in the United States during the Presidency of George W. Bush

    Directory of Open Access Journals (Sweden)

    Marie-Christine Pauwels

    2010-03-01

    Full Text Available L’offensive contre l’affirmative action engagée depuis les années 1980 s’est accrue pendant les deux mandats de la présidence Bush, et l’opinion publique s’est radicalisée, percevant désormais de plus en plus fréquemment ces programmes comme une série d’avantages indûment octroyés à un certain nombre de « privilégiés ». Tout programme d’affirmative action doit désormais être étayé par des disparity studies démontrant la réalité de la discrimination, et seules des mesures très ciblées (narrowly tailored sont autorisées pour y remédier. La charge de la preuve a été en quelque sorte inversée. Mais contrairement aux idées reçues, l’affirmative action n’est pas sur le point de disparaître aux États-Unis et malgré son hostilité de principe, le gouvernement Bush n’a pris aucune mesure concrète pour démanteler ces programmes. L’affirmative action connaît aujourd’hui plusieurs transformations majeures, l’évolution la plus marquante étant l’effacement du critère ethno-racial au profit de critères plus neutres et moins idéologiquement polarisants, essentiellement d’ordre géographique et territorial. Dans l’enseignement supérieur par exemple, des procédures d’admission codées ont vu le jour pour favoriser l’accès des minorités ethniques sous-représentées aux campus d’élite, et diverses stratégies de contournement ont été mises en place dans l’adjudication des marchés publics. Ces transformations sont également intéressantes à analyser d’un point de vue transnational, puisque l’on observe une convergence croissante avec le modèle français de discrimination positive, lui aussi fondé sur le camouflage et l’euphémisation de l’identité ethno-raciale et sur une logique de territoire.This article examines the fate of affirmative action in the United States during the eight years of the Bush administration. After a brief reminder of the major landmarks

  17. Les relations économiques sino-américaines pendant les années Bush (2001-2008 : vers une stratégie de « dissuasion économique » ? US-China Relations during the Bush Presidency, 2001-2008: Towards a Strategy of “Economic Deterrence”?

    Directory of Open Access Journals (Sweden)

    Juliette Bourdin

    2010-03-01

    Full Text Available Au cours de la présidence de George W. Bush, les relations économiques sino-américaines se sont caractérisées par une interdépendance croissante, tant au niveau des enjeux commerciaux que des enjeux financiers. Si les questions du déficit de la balance commerciale et des droits de la propriété intellectuelle faisaient déjà débat pendant la présidence de Bill Clinton, en revanche les questions financières de la valeur du renminbi et des réserves chinoises de bons du Trésor sont apparues pendant les années Bush. Alors que l’administration Bush prônait initialement une stratégie de « congagement » (endiguement/ engagement et définissait la Chine comme un « concurrent stratégique », non seulement le 11-Septembre a modifié les priorités immédiates de Washington mais, du fait de l’interdépendance économique sino-américaine, il semble que la « dissuasion économique » soit désormais la seule stratégie réaliste dans les relations entre Washington et Pékin.During the presidency of George W. Bush, the main characteristic of US-China economic relations was an increasing interdependency in the field of trade as well as over financial issues. If trade imbalance and intellectual property rights were already matters for debate during the presidency of Bill Clinton, the issues of the value of the renminbi and of Chinese holdings of US Treasury bonds emerged during the Bush years. While the Bush administration had initially advocated a strategy of “congagement” (containment/ engagement and had defined China as a “strategic competitor”, not only did 9/11 change Washington’s immediate priorities, but, with the US-China economic interdependency, the only realistic strategy between Washington and Beijing seemed to consist in “economic deterrence.”

  18. Humidity and seasonality drives body size patterns in males of the bush cricket Isophya rizeensis Sevgili, 2003 (Orthoptera: Tettigoniidae: Phaneropterinae).

    Science.gov (United States)

    Cağlar, Selim S; Karacaoğlu, Cağaşan; Kuyucu, A Cem; Sağlam, Ismail K

    2014-04-01

    Two primary patterns of body size variation have been recorded in ectotherms in relation to latitudinal/altitudinal shifts. In some, body size increases with increasing latitude/altitude whereas, in others, body size decreases with increasing latitude/altitude. This clinal variation is generally assumed to be caused by local adaptation to environmental conditions however the selective variable(s) (temperature, humidity, diet quality, etc.) is still heavily debated. Here we investigate geographic variation in body size of dark and pale color morphs of males of the bush-cricket Isophya rizeensis collected from 15 locations along an elevation gradient ranging from 350 to 2 500 m. Using an information theoretical approach we evaluate the relative support of four different hypotheses (the temperature size rule, the moisture gradient hypothesis, the seasonal constraint hypothesis, and the primary productivity hypothesis) explaining body size variation along the altitudinal gradient. Body size variation in pale color morphs showed a curvilinear relationship with altitude while dark color morphs showed no variation in body size. Body size variation in pale color morphs was highly correlated with precipitation and temperature seasonality values thus giving strong support for the moisture gradient and seasonal constraint hypothesis. Our results reinforce the importance of gradients in humidity and seasonality over temperature in the creation of altitudinal body size clines and the role of selection for resistance to stress factors in the establishment of these clines. Whether a body size cline is observed or not might also depend on the phenotypic properties of the individuals, like coloration. PMID:23956203

  19. Insights into the dynamics of in situ gas hydrate formation and dissociation at the Bush Hill gas hydrate field, Gulf of Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Solomon, Evan A.; Kastner, Miriam; Robertson, Gretchen; Jannasch, Hans; Weinstein, Yishai

    2005-07-01

    Four newly designed flux meters called the MOSQUITO (Multiple Orifice Sampler and Quantitative Injection Tracer Observer), capable of measuring fluid flow rates and sampling pore fluid chemistry simultaneously, and two temperature loggers were deployed for 430 days adjacent to the Bush Hill hydrate mound in the northern Gulf of Mexico (GC 185). The main objective of the deployment was to understand how chemistry, temperature, and subsurface hydrology dynamically influence the growth and dissociation of the gas hydrate mound. The flux meters were deployed in a mussel field, in bacterial mats, in a tubeworm field, and at a background site approximately 100 m southwest of the hydrate mound. Results from the longterm chemical monitoring suggest that this system is not in dynamic equilibrium. Gas hydrate actively formed within the mussel field adjacent to the most active gas vent, in the tubeworm field, and at the background site. The hydrology is variable with upward flow rates ranging from 1-90 cm/yr and downward flow rates from 3-130 cm/yr. Two distinct hydrologic pulsing events were sampled across the three mound sites, which advect a fluid from depth that further stabilizes the gas hydrate deposit. The hydrogeochemistry at Bush Hill seems to be influenced by multiple mechanisms such as active formation of gas hydrate, fluid influx and outflux due to active venting of CH4 at transient methane seeps at and near the mound, local salt tectonics, and density driven convection. The fluxes of fluid, solutes, and methane may have a significant impact on the seafloor biochemical environment and the water column chemistry at Bush Hill. (Author)

  20. "If you don't believe it, it won't help you": use of bush medicine in treating cancer among Aboriginal people in Western Australia

    Directory of Open Access Journals (Sweden)

    Bessarab Dawn

    2010-06-01

    Full Text Available Abstract Background Little is known about the use of bush medicine and traditional healing among Aboriginal Australians for their treatment of cancer and the meanings attached to it. A qualitative study that explored Aboriginal Australians' perspectives and experiences of cancer and cancer services in Western Australia provided an opportunity to analyse the contemporary meanings attached and use of bush medicine by Aboriginal people with cancer in Western Australia Methods Data collection occurred in Perth, both rural and remote areas and included individual in-depth interviews, observations and field notes. Of the thirty-seven interviews with Aboriginal cancer patients, family members of people who died from cancer and some Aboriginal health care providers, 11 participants whose responses included substantial mention on the issue of bush medicine and traditional healing were selected for the analysis for this paper. Results The study findings have shown that as part of their healing some Aboriginal Australians use traditional medicine for treating their cancer. Such healing processes and medicines were preferred by some because it helped reconnect them with their heritage, land, culture and the spirits of their ancestors, bringing peace of mind during their illness. Spiritual beliefs and holistic health approaches and practices play an important role in the treatment choices for some patients. Conclusions Service providers need to acknowledge and understand the existence of Aboriginal knowledge (epistemology and accept that traditional healing can be an important addition to an Aboriginal person's healing complementing Western medical treatment regimes. Allowing and supporting traditional approaches to treatment reflects a commitment by modern medical services to adopting an Aboriginal-friendly approach that is not only culturally appropriate but assists with the cultural security of the service.

  1. Prediction of the effects of nutrient loadings from a power plant at Perryman on the water quality of the Bush River estuary. Final report

    International Nuclear Information System (INIS)

    A water-quality model consisting of a one-dimensional Hydraulic Module coupled with a Water Quality Module was used to assess the effects of increased nutrient loadings from the proposed Perryman Power Plant on the dissolved oxygen and chlorophyll-a concentrations in the Bush River estuary. The Hydraulic Module represented the longitudinal water movement (and physical transport of associated constituents) among 12 spatial segments. The Water Quality Module represented the biological processes affecting nitrogen, phosphorus, chlorophyll-a, and dissolved oxygen in each segment (e.g., photosynthesis, nutrient uptake, decomposition)

  2. L’environnement naturel et le changement climatique pendant les années Bush : la pertinence d’une différenciation des échelles territoriales Climate Change and the Natural Environment in the Bush Years: The Relevance of Territorial Scale Differentiation

    Directory of Open Access Journals (Sweden)

    Cynthia Ghorra-Gobin

    2010-03-01

    Full Text Available L’attitude de l’administration fédérale au cours des huit années de l’administration Bush contraste avec celle du contexte des années 1960-1970 pour ce qui concerne la prise en compte de l’environnement naturel dans les décisions économiques. Toutefois, cet engagement limité du président Bush sur la question du changement climatique dans les débats internationaux n’a pas pour autant réduit les capacités de mobilisation des États et des villes sur ce thème.On the issue of whether climate change should be taken into account in economic decisions, the federal administration’s attitude during the Bush Presidency sharply contrasted with the attitudes of earlier administrations, particularly in the 1960’s and 1970’s. The limited concern for climate change which the federal government exhibited in the international arena did not reduce, however, the mobilization of states and local communities on this issue.

  3. Olfactometry: an efficient technique for diagnosing and solving odor problems in sewage plants; Olfatometria, una tecnica eficaz para el diagnostico y solucion de los problemas de olores en las EDARs

    Energy Technology Data Exchange (ETDEWEB)

    Valor Herencia, I. [Departamento Olfatometria y Cromatografia LABAQUA S. A. Alicante (Spain)

    1999-07-01

    An essential requirement for rationalizing the problem of unwanted smells generated by water treatment networks and sewage plants is a reliable system for measuring such odors. Otherwise, any attempt at providing a solution will be empirical, with unpredictable results. In other words, major investments will be made with a high risk of failure. Tackling this problem efficiently requires working out a plan to determine the major sources of smells, the taking of samples and their subsequent olfactometric analysis by at least eight specially trained panellists. It is then possible to quantify the emissions from each source and build a model including environmental emission levels and establishing the corresponding isograms. On the basis of all this information, proposed solutions or corrective measures can be defined to deal with the odor problem rationally. (Author) 5 refs.

  4. Establishment of a luminescence technique for the quantification of uranyl ion in a KNO{sub 3} media; Establecimiento de una tecnica de luminiscencia para la cuantificacion del ion uranilo en medio de KNO{sub 3}

    Energy Technology Data Exchange (ETDEWEB)

    Contreras R, A. [UAEM, A.P. 2-139, 50000 Toluca, Estado de Mexico (Mexico); Fernandez V, S.M.; Ordonez R, E. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2005-07-01

    The study of the storage of high level radioactive residuals that contain uranium, it makes necessary that in the sorption studies is counted with a reliable technique and not pollutant for the quantification of this element. Presently work intends a technique for the quantification of the uranyl ion using the luminescence technique, which allows not to generate radioactive or industrial residuals. It was used a solution of uranyl nitrate in KNO{sub 3} 0.5 M media. The solutions were adjusted to a pH of 1.48+0.03. A statistical study for the analysis of the data of fluorescence, about the maximum value of the peak, total area under the curve and area under the it curves is shown, being the best correlation for the concentration curve versus maximum of the peak, adjusted with a polynomial of second grade. The study of stability of the solutions with regard to the time is reported and that the technique proposal works for the interval of concentrations among 1 x 10{sup -2} M and 6 x 10{sup -5} M. (Author)

  5. Calibration of a {sup 19} {sup 2}Ir source for high dose brachytherapy using various techniques; Calibracion de una fuente de {sup 192} Ir para braquiterapia de alta tasa de dosis mediante diversas tecnicas

    Energy Technology Data Exchange (ETDEWEB)

    Montilla Prieto, Tedicel C., E-mail: tcdicel@gmaiLcam [Instituto de Oncologia Dr. Miguel Perez Carreno, Barbula (Venezuela, Bolivarian Republic of). Departamento de Fisica y Dosimetria; Padron Rivero, Alvaro D., E-mail: alvarodpadronr@yahoo.com.ve [Universidad de Carabobo, Barbula (Venezuela, Bolivarian Republic of). Facultad de Ciencias de la Salud. Departamento de Ciencias Fisiologicas

    2013-10-01

    In this research we studied three experimental procedures for calibration of a source of {sup 192}Ir to high dose rate for clinical brachytherapy use, and thus were compared and analysis of the advantages and disadvantages of each. For this study we quantified the value of the current kerma rate reference in air by three procedures: source calibration using a well chamber, with an cylindrical ionization chamber in air, and a cylindrical ionization chamber on a phantom, and this magnitude was compared with the value provided by the manufacturer of the source and thereby obtaining the deviation corresponding . Thus, it was found that the deviation corresponding to the source calibration making use of a well chamber, remained within tolerance, while the cylindrical ionization chamber in air and on phantom exceeded the standards established in some documents. However, although both the measurement in air and in the phantom are the procedures for the final calibration source, these can be used to verify that the delivered dose are in tolerance.

  6. Design of a technique for the radiotherapy treatment of patients of prostate with bilateral prosthetic hip; Diseno de una tecnica para el tratamiento radioterapico de pacientes de prostata con protesis bilateral de cadera

    Energy Technology Data Exchange (ETDEWEB)

    Camacho, C.; Perez-Alija, J.; Olivares, S.; Loscos, S.; Pedro, A.

    2013-07-01

    The design of the plan of treatment of patients who have to undergo radical radiotherapy of prostate and that incorporate some sort of hip prosthesis is usually complex. the case of a patient's prostatic bed with bilateral hip prosthesis to assess radical radiotherapy to the 70Gy in bed. The objective of this paper is to present the chosen technique designed for this treatment. (Author)

  7. Una mirada a la juventud

    OpenAIRE

    Boza Carreño, Ángel

    2009-01-01

    ¿Qué es la juventud? ¿En qué consiste ser joven? Este trabajo pretende realizar un acercamiento a la realidad de la juventud andaluza y española desde una perspectiva social y educativa. Para ello hemos definido una serie de tópicos que creemos que definen a la juventud y los hemos ido analizando. Mitificación, hedonismo, ocio, cambio social, contestación, participación, valores, subculturas,transición, educación, trabajo, subordinación-emancipación, identidad, botellón y diversidad ...

  8. Una mirada sobre la interactividad

    OpenAIRE

    Capparelli, María Isabel; Dávila, Analía

    2009-01-01

    Los centros interactivos actualmente se han convertido en centros de aprendizaje público, donde se plantea una nueva forma de interrelación entre el objeto de conocimiento y el individuo. Abremate, es el centro Interactivo de Ciencia y Tecnología, de la Universidad Nacional de Lanús, es comparable a un museo de ciencias porque, a pesar de que no guarda objetos del pasado con valor histórico o artístico, sí guarda una historia que recrea el uso de herramientas y descubrimientos científicos con...

  9. Maternidad tras una muerte perinatal

    OpenAIRE

    Rozas García, M. Rosa; Francés Ribera, Lidia

    2001-01-01

    La nueva gestación tras una muerte perinatal está llena de dudas, miedos e inseguridades, y es una situación que va a suponer un desgaste físico y emocional para la familia, especialmente para la mujer. Esta gestación se caracteriza por un aumento de la ansiedad, que puede continuar después del nacimiento y manifestarse mediante conductas de sobreprotección del nuevo hijo. Las matronas deben conocer las posibles respuestas emocionales de la mujer y proporcionar cuidados y apoyo específicos du...

  10. Crimes et châtiments dans le monde de la finance pendant les années Bush Crime and Punishment in the World of Finance during the Bush Administration

    Directory of Open Access Journals (Sweden)

    Régine Hollander

    2010-03-01

    Full Text Available Le premier mandat de George W. Bush est ébranlé par une série de scandales dans le monde de l’entreprise et de la finance qui provoque une vague de réformes au sein du Congrès et des autorités de réglementation. La loi Sarbanes-Oxley, votée en 2002, a pour but d’accroître les contrôles financiers et de prévenir la fraude. Simultanément un dispositif répressif, destiné à prouver que le crime ne paie pas et à redonner confiance aux petits investisseurs, est mis en place. Les entreprises paient de lourdes amendes, mais les individus sont aussi mis au banc des accusés. Armé du Martin Act qui lui donne de larges pouvoirs, le Procureur Général de l’État de New York, Eliot Spitzer, poursuit sans relâche les coupables. On fait appel au sens moral de chacun et encourage la dénonciation. Cependant Sarbanes-Oxley a des effets pervers sur l’activité des marchés financiers. Elle décourage les introductions en bourse sur la place de New York et incite les entreprises à sortir de la cote. Des voix s’élèvent pour réclamer une déréglementation qui rendrait la place de New York plus attractive pour les entreprises. Mais voilà qu’en septembre 2008, la tourmente née de la titrisation des crédits à risque déclenche un maelström qui engouffre les institutions les plus prestigieuses de Wall Street. Les régulateurs reprennent l’avant de la scène et le risque est nationalisé, punissant les contribuables d’un crime dont ils ne se sentent pas responsables. L’effet de la crise financière sur l’économie réelle impose un changement de paradigme. Il ne s’agit plus de châtier, mais de sauver un secteur bancaire en désarroi pour préserver le mode de vie des Américains.George W. Bush’s first presidential term was shaken by a series of scandals in the corporate and financial world. Congress and regulatory authorities responded by enacting a wave of reforms. The Sarbanes-Oxley Act, passed in 2002, aimed at

  11. Modelling the distribution of the invasive Roesel’s bush-cricket (Metrioptera roeselii in a fragmented landscape

    Directory of Open Access Journals (Sweden)

    Sonja Preuss

    2011-11-01

    Full Text Available The development of conservation strategies to mitigate the impact of invasive species requires knowledge of the species ecology and distribution. This is, however, often lacking as collecting biological data may be both time-consuming and resource intensive. Species distribution models can offer a solution to this dilemma by analysing the species-environment relationship with help of Geographic information systems (GIS. In this study, we model the distribution of the non-native bush-cricket Metrioptera roeselii in the agricultural landscape in mid-Sweden where the species has been rapidly expanding in its range since the 1990s. We extract ecologically relevant landscape variables from Swedish CORINE land-cover maps and use species presence-absence data from large-scale surveys to construct a species distribution model (SDM. The aim of the study is to increase the knowledge of the species range expansion pattern by examining how its distribution is affected by landscape composition and structure, and to evaluate SDM performance at two different spatial scales. We found that models including data on a scale of 1 × 1 km were able to explain more of the variation in species distribution than those on the local scale (10 m buffer on each side of surveyed road. The amount of grassland in the landscape, estimated from the area of arable land, pasture and rural settlements, was a good predictor of the presence of the species on both scales. The measurements of landscape structure – linear elements and fragmentation - gave ambivalent results which differed from previous small scaled studies on species dispersal behaviour and occupancy patterns. The models had good predictive ability and showed that areas dominated by agricultural fields and their associated grassland edges have a high probability being colonised by the species. Our study identified important landscape variables that explain the distribution of M. roeselii in Mid-Sweden that may also

  12. Final configuration with assembly assessment of the 100 kV high voltage bushing for the Indian test facility

    International Nuclear Information System (INIS)

    The Indian Test Facility (INTF) of Neutral Beam (NB) system is an Indian voluntary effort for the full characterization of the diagnostic neutral beam which is the part of ITER's neutral beam system. The design activities of INTF NB system are completed. The INTF High Voltage Bushing (HVB), which is one of the component of NB system, is designed to connect all the required feedlines, e.g. electrical busbars, RF co-axial lines, diagnostic lines and hydraulic and gas feed lines, carried by the transmission line from the HV deck to the Beam Source of NB system. It forms the primary vacuum boundary and provides 100 kV isolation for INTF beam operation. The entire feedlines pass through a metallic plate of HVB called Dished Head (DH) where all the feedlines converge. The overall diameter of DH is 847 mm which is governed by the diameter of the Porcelain insulator which is meant for 100 kV isolation. The effective diameter where all the feedlines converge at the dished head is ∼ 600 mm which is quite a challenge to accommodate 26 feedlines each of average diameter 60 mm. Electrical feedlines require Vacuum-Electrical feedthroughs for voltage isolation whereas water and gas lines are considered to be directly welded with the DH except one water line which requires 12 kV voltage isolation with respect to DH. For RF lines, different scheme is considered which includes separate Electrical Feedthrough and Vacuum Barrier. To provide connection to electrical cables of heaters and thermocouples, 4 numbers of multipin vacuum compatible electrical feedthroughs are provided which can accommodate ∼250 cables. Due to space constraints, Vacuum-Electrical Feedthroughs are considered to be welded with the DH and therefore they shall be of metal-ceramic-metal configuration to allow welding. To avoid undue loading on the ceramic part, the feedlines are supported additionally at DH using vacuum compatible and electrically insulating material. One more important aspect of the INTF

  13. alumnos de una sola cultura?

    Directory of Open Access Journals (Sweden)

    Siegfried Boehm

    2006-01-01

    Full Text Available Dado que en la actualidad hay mayores posibilidades para practicar una lengua extranjera en su contexto natural con nativohablantes, es imprescindible poseer una cierta competencia intercultural a fin de que este diálogo pueda llevarse a cabo exitosamente. Sin embargo, los libros de texto convencionales editados en el país de origen de la lengua estudiada difícilmente pueden cubrir este requisito, puesto que las particularidades culturales de una sociedad sólo se vuelven interculturales al compararlas con la cultura de los alumnos. En el artículo presente se proponen varios ejercicios enfocados al aprendizaje intercultural en donde no sólo se aprenden las normas, reglas y actitudes de la cultura meta, en este caso de Alemania, Austria y Suiza, sino que también se estimula la reflexión sobre las de la cultura propia. Esta sensibilización cultural es indispensable para lograr una comunicación equitativa entre personas de diferentes culturas.

  14. Recuerdos de una noche norteamericana

    OpenAIRE

    Giardinelli, Mempo

    2015-01-01

    Tal vez porque la ausencia de una amistad que supo forjarse en el encuentro entre Tandil y Chaco, San Lorenzo y Vélez, Europa y México siempre resulta inverosímil, Mempo Giardinelli vuelve a compartir las sensaciones que lo atravesaron cuando, hace dos años, se cumplió un nuevo aniversario de la muerte de Soriano.

  15. Educar para gestionar conflictos en una sociedad fragmentada. Una propuesta educativa para una Cultura de Paz.

    OpenAIRE

    Cruz Artunduaga, Fernando

    2008-01-01

    El texto reconstruye una iniciativa de desarrollo de Cultura de Paz en Caquetá, Amazonía colombiana, con epicentro en Florencia, su capital. El trabajo comprende una etapa inicial de sensibilización a través de la experiencia, producida por la inmersión en el mundo de la vida. Luego se pasa a la observación de la forma en la que se tratan los conflictos en diferentes escenarios de socialización: la familia, la escuela, la comunidad y la sociedad. La mirada se posa más en la escuela. Después v...

  16. El niño como parte de una familia, una comunidad y una sociedad

    OpenAIRE

    Míguez Gómez, Patricia

    2011-01-01

    Actualmente, para comprender qué quiere decir la atención temprana es necesario pensar en el niño como parte de un sistema familiar,de una comunidad y de una sociedad, elementos imprescindibles en cualquier intervención. Es necesario considerar la globalidad del niño, y ser planificadas por un equipo de profesionales que tenga en cuenta todas las áreas del desarrollo del pequeño. Es por eso que no hay dos tipos de intervención iguales.

  17. La teoría constitucional y la teoría del derecho de Bush II. La Constitución de emergencia entre el Derecho y la propaganda

    OpenAIRE

    Menéndez, Agustín José

    2010-01-01

    La doctrina Bush II de Derecho constitucional consiste en cuatro cambios del derecho constitucional positivo de los Estados Unidos, justificados mediante referencia a la excepcional amenaza que las nuevas formas de terrorismo suponen para la seguridad nacional. Bush II se ha arrogado el poder de ordenar la detención indefinida, la vigilancia sin mandato judicial, los asesinatos selectivos,la muerte o la tortura de los arrestados o caídos en la custodia física de los funcionarios estadounidens...

  18. Ilves, Bush discuss cybersecurity

    Index Scriptorium Estoniae

    2007-01-01

    25. juunil 2007 Washingtonis toimunud USA presidendi George W. Bushi ja Eesti presidendi Toomas Hendrik Ilvese kohtumisel oli kõne all NATO küberkaitsekeskuse loomine Eestisse. Vabariigi President töövisiidil Ameerika Ühendriikides 25.-26.06.2007

  19. Regulation after Bush

    OpenAIRE

    Hahn Robert; Passell Peter

    2008-01-01

    Barack Obama and John McCain have staked out very different positions on serious questions involving economic regulation everything from housing finance to alternative energy mandates but practical considerations will dissolve many of these differences, according to Robert Hahn and Peter Passell.

  20. ¿Una corporeidad disimulante y una interioridad disimulada?

    OpenAIRE

    Rovaletti, María Lucreci

    1999-01-01

    La psicología y, con ella, la psico(pato)logía y la psiquiatría están cargadas de la lógica de la separación y de la disyunción, que opone una psique, o conciencia clara y evidente, a un cuerpo cárcel-mera extensión. En qué medida, nos preguntamos, el pensamiento psicológico puede evitar el dualismo sujeto-objeto, y sus aporías consecutivas de interioridad-exterioridad. Ya W. Wundt consideraba a la conciencia como una realidad interior que el cuerpo normalmente disimula. Pero esta interiorida...

  1. Relazione tecnica su DSpace (MIT)

    OpenAIRE

    De Robbio, Antonella

    2002-01-01

    This report presents Dspace that is a product realized in 2000 between Libraries of MIT (Massachussetts Institute Technology) and Hewlett-Packard Company relating to building a repository. It is able to support long-term memory, capturing and archiving of scholastic documents, realized from all MIT’s departments and free access by WWW, too. Furthermore, Dspace supports distribution and self-preservation of a different kinds of materials such as texts, videos, sounds, pictures, software and...

  2. Phytoremediation techniques; Tecnicas de fitorremediacion

    Energy Technology Data Exchange (ETDEWEB)

    Bonilla, A.; Urzelai, A.; Bartolome, I.; Cagigal, E. [Unidad de Medio Ambiente. Bilbao (Spain)

    2000-07-01

    The ground pollution by heavy metals is a problem is a problem widely spreaded in the majority of the industrialised countries. Therefore, areas with high concentration of heavy metals in their ground are often associated with the areas in which mining activities have been developed and areas highly industrialised. This situation implies a deficient ecosystem behaviour. (Author)

  3. Le collezioni di Mammiferi del Museo Civico di Zoologia di Roma: una sintesi storica

    Directory of Open Access Journals (Sweden)

    Gloria Svampa

    2003-10-01

    Full Text Available Il Museo Civico di Zoologia di Roma è sorto nel 1932 all?interno del Giardino Zoologico dell?allora Governatorato di Roma, di cui ha condiviso la direzione tecnica ed amministrativa sino al 1998. Il nucleo centrale delle collezioni è costituito dal materiale di proprietà universitaria, di quello che fu il Museo di Zoologia della Regia Università, a sua volta diretto discendente delle collezioni del Museo di Zoologia ed Anatomia Comparata del Pontificio Archiginnasio Romano. La quasi totalità degli esemplari tassidermizzati risale al periodo in cui l?Istituto di Zoologia fu diretto da Antonio Carruccio (1883-1914. Dal 1932, la collezione teriologica si è andata arricchendo, in particolare di materiale osteologico, soprattutto con acquisizioni provenienti dal Giardino Zoologico e da rare spedizioni scientifiche, come quella organizzata dal CNR nell?Alto Rio Negro del 1962-3, guidata da Ettore Biocca. Anche a causa del fatto che per molti anni il Museo è stato privo di curatori, mancano importanti collezioni teriologiche da studio, fatta eccezione per quella cetologica. In molti casi, singoli esemplari potenzialmente di grande valore scientifico, mancano di dati esatti sulla località di cattura. Nell?ambito di un programma di ricatalogazione della collezione recentemente intrapreso, particolare attenzione è stata posta all?acquisizione di tutti i dati legati alla storia dei singoli esemplari, rintracciabili attraverso i resoconti di viaggio dei singoli esploratori. Nel periodo universitario, infatti, il Museo della nuova capitale d?Italia fu oggetto di grande attenzione da parte di privati ed enti, a partire dai Savoia, che donarono le loro collezioni o il materiale raccolto durante le spedizioni effettuate. Il lavoro di revisione in corso sta mettendo in luce una serie di esemplari meritevoli di ulteriori, dettagliate ricerche. È probabile che molto del materiale del Museo, pervenuto a Roma attraverso donazioni della famiglia reale

  4. Una mirada humana a la calidad

    OpenAIRE

    Tamarit, Javier

    2010-01-01

    La calidad en nuestro sector deja de ser una cuestión de decisión organizacional para pasar a ser una exigencia ética, pues tenemos el deber ético de proporcionar excelentes apoyos a cada persona para que pueda desarrollar su proyecto singular de buena vida, de una vida de calidad, una vida que se perciba como significativa y valorada.

  5. Una minga para el posdesarrollo

    Directory of Open Access Journals (Sweden)

    Arturo Escobar

    2011-01-01

    Full Text Available El artículo sintetiza algunas conclusiones a las que han llegado movimientos sociales y académicos en las últimas dos décadas al reflexionar sobre la globalización y sus implicaciones; el modelo dominante, basado en las nociones de "desarrollo" y "modernidad", ha entrado en crisis. Por lo tanto, se hace necesario avanzar en una transición cultural que se pueda comprender como un cambio de época y no sólo como una época de cambios. Para llevar a cabo esta transformación, se deben resolver las con-tradicciones existentes entre el neodesarrollismo y el postdesarrollo, por supuesto, a favor de éste último.

  6. Una experiencia con los kuna

    OpenAIRE

    Villalobos, Leonor Cristina de

    1996-01-01

    Me encuentro en la difícil tarea de materializar en palabras una experiencia única. De transmitir sensaciones y vivencias cargadas de magia que desestructuraron en gran medida lo que hasta ese momento formaba parte de mi vida. Es así como puedo definir mi experiencia con los indios Kuna. Tuve la oportunidad de convivir con ellos dos meses, invitada por investigadores de la Universidad de Miami, para realizar estudios sobre ectoparasitosis que afectan a esta comunidad india.

  7. Sevilla, una encrucijada de caminos

    Directory of Open Access Journals (Sweden)

    Manuel Martín Martin

    2009-01-01

    Full Text Available El mundo del flamenco, tan acostumbrado a contemplar la historia del género como una sucesión de nombres distinguidos que, por su significación expresiva o por su carácter de maestría incontestable, simbolizan una época, olvida con frecuencia el universo en que esa constelación de estrellas irradia su luminosidad más intensa, esto es, relega a un rol de menor importancia el ámbito en que se desarrollaron unos talentos especiales que, a lapostre, describirían situaciones y formas que el tiempo estimaría de verdadera trascendencia. Sin ánimo de caer en un determinismo localista demasiado forzoso, justo es decir que uno de los más grandes milagros de la música flamenca, se llama Sevilla, su barrio de Triana y muchos pueblos de la provincia. Una unidad demográfica que ofrece en grado sumo el origen de la complacencia en los goces de los sentidos.

  8. Study for increasing the stabilization time of a catalytic dye to facilitate the fabrication of membrane electrode assemblies; Estudio para incrementar el tiempo de estabilizacion de una tinta catalitica para facilitar la fabricacion de ensambles membrana-electrodo

    Energy Technology Data Exchange (ETDEWEB)

    Flores Hernandez, J. Roberto [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)] e-mail: jrflores@iie.org.mx; Martinez Vado, F. Isaias [Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Mexico D.F. (Mexico); Cano Castillo, Ulises, Albarran Sanchez, Lorena [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2009-09-15

    An infrastructure project has been underway for hydrogen technology and fuel cells at the Electrical Research Institute (IIE, Spanish acronym). Part of this project is an activity for the fabrication of membrane electrode assemblies (MEA). Currently, a fabrication process is well-established for the MEA using the spray technique. In addition, a catalytic dye base composition has been developed for use in the fabrication of high-quality MEA with a good degree of reproducibility. Nevertheless, the instability of the dye over time prevents continuous fabrication of MEA. This document presents the results obtained, to-date, of research conducted at the IIE aimed at increasing the stability of the catalytic dye by adding a surfactant with different concentrations and increasing the concentration of the Nafion® solution. It was found that the effect of adding the surfactant to the catalytic dye results in a qualitative decrease in the agglomerate sizes, while also decreasing the porosity of the dye once it has dried. In addition, it was found that increasing the amount of Nafion® in the catalytic die increases the porosity. [Spanish] En el Instituto de Investigaciones Electricas (IIE) se ha venido trabajando en un proyecto de infraestructura sobre la tecnologia de hidrogeno y celdas de combustible. Dentro de este proyecto se tiene una actividad orientada a la fabricacion de Ensambles Membrana-Electrodo (MEA's). Actualmente se tiene un proceso de fabricacion bien establecido para la elaboracion de MEA's utilizando la tecnica de rociado, asimismo, se tiene una composicion base de tinta catalitica con la cual se fabrican MEA's de buena calidad y con buen grado de reproducibilidad. Sin embargo, la inestabilidad de la tinta con respecto al tiempo impide tener una fabricacion continua de los MEA's. En este documento se presentan los resultados obtenidos hasta ahora de una investigacion que se realiza en el IIE orientada a incrementar la estabilidad de la

  9. Proceedings of the 20 National seminar on the rational use of energy and exposition of equipment and services. [Selected Papers]; 20. Seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios. Memoria Tecnica. [Ponencias seleccionadas

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-07-01

    This document contains the proceedings of the 20 national seminar on the rational use of energy and exposition of equipment and services, organized by the Asociaciacion de Tenicos y Profesionistas en Aplicacion Energetica (ATPAE), in Mexico, D.F, from the 15 to the 19 of November of 1999. This Seminar covered subjects such as: Energy saving in the power sector, power efficiency in industrial processes and practical developments, practical cases of energy saving in industry, energy saving in constructions, transport, utilization of renewable energies, and energy and the environment. [Spanish] Este documento contiene la memoria tecnica del 20 seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios, organizado por la Asociacion de Tecnicos y Profesionistas en Aplicacion Energetica (ATPAE), en Mexico, D.F., del 15 al 19 de noviembre de 1999. Este seminario trato de temas tales como: Ahorro de energia en el sector energetico, eficiencia energetica en procesos industriales y desarrollos practicos, casos practicos de ahorro de energia en la industria, ahorro de energia en edificaciones, transporte, aprovechamiento de energias renovables, y energia y ambiente.

  10. Proceedings of the 21 National seminar on the rational use of energy and exposition of equipment and services. [Selected Papers]; 21 Seminario nacional sobre el uso racional del a energia y exposicion de equipos y servicios. Memoria Tecnica. [Ponencias seleccionadas

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This document contains the proceedings of the 21 national seminar on the rational use of energy and exposition of equipment and services, organized by the Asociacion de Tecnicos y Profesionistas en Aplicacion Energetica (ATPAE), in Mexico, D.F., from the 14 to the 16 of March of 2001. This Seminar covered subjects such as: Energy saving in the power sector, power efficiency in industrial processes and practical developments, practical cases of energy saving in industry, energy saving in constructions, transport, utilization of renewable energies and the environment. [Spanish] Este documento contiene la memoria tecnica del 21 seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios, organizado por la Asociacion de Tecnicos y Profesionistas en Aplicacion Energetica (ATPAE), en Mexico, D.F., del 14 al 16 de marzo de 2001. Este seminario trato de temas tales como: Ahorro de energia en el sector energetico, eficiencia energetica en procesos industriales y desarrollos practicos, casos practicos de ahorro de energia en la industria, ahorro de energia en edificaciones, transporte, aprovechamiento de energias renovables y ambiente.

  11. 19. National seminar on the rational use of energy and exposition of equipment and services. Transactions. [Selected Papers]; 19. Seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios. Memoria Tecnica. [Ponencias seleccionadas

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-12-31

    This document contains the technical proceedings of the 19 national seminar on the rational use of energy and exposition of equipment and services, organized by the Asociacion de Tecnicos y Pofesionistas en Aplicacion Energetica (ATPAE) (Association of Technicians and Professionals on Energy Application) conducted in Mexico City on September 21-25, 1998. This seminar encompassed subjects such as: energy saving in the energy sector, energy efficiency in industrial processes and practical developments, practical cases of energy saving in industry, energy saving in buildings, transportation, non-renewable energy utilization and environmental impact and eco-energies. [Espanol] Este documento contiene la memoria tecnica del 19 seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios, organizado por la Asociacion de Tecnicos y Profesionistas en Aplicacion Energetica (ATPAE), en Mexico, D.F, los dias 21-25 de septiembre de 1998. Este seminario trato de temas tales como: Ahorro de energia en el sector energetico, eficiencia energetica en procesos industriales y desarrollos practicos, casos practicos de ahorro de energia en la industria, ahorro de energia en edificaciones, transporte, aprovechamiento de energias renovables, e impacto ambiental y eco-energias.

  12. Impacts of the diversity of traditional uses and potential economic value on food tree species conservation status: case study of African bush mango trees (Irvingiaceae) in the Dahomey Gap (West Africa).

    NARCIS (Netherlands)

    Vihotogbé, R.; Kakai, R.G.; Bongers, F.; Andel, van T.; Berg, van den R.G.; Sinsin, B.; Sosef, M.S.M.

    2014-01-01

    Background and aims – Bitter and sweet African bush mango trees belong to the family Irvingiaceae and produce valuable non-timber forest products in humid lowland areas of West and Central Africa. The bitter and sweet types are treated as distinct taxa at the variety or species level. They have not

  13. Une évaluation de l’impact des politiques de l’administration Bush sur les exportations canadiennes dans le contexte de l’Accord de libre-échange nord-américain An Assessment of Bush Administration Policies on Canadian Exports in the Context of the North American Free Trade Agreement

    Directory of Open Access Journals (Sweden)

    François Vaillancourt

    2010-03-01

    Full Text Available Du point de vue du Canada, qui dépend des États-Unis pour 70-80 % de son commerce extérieur, l’évolution des échanges commerciaux est une dimension majeure d’un bilan des années Bush. Notre étude vise à évaluer l’impact du libre-échange sur les exportations canadiennes vers les États-Unis et en particulier l’impact des mesures prises sous la présidence Bush. Nous commençons par un survol de l’évolution des flux de commerce entre le Canada et ses partenaires nord-américains. La deuxième section porte sur la mise en place de l’Accord de libre-échange canado-américain (ALE et de l’Accord de libre-échange nord-américain (ALENA. La troisième section traite de la plus récente période, qui s’amorce au lendemain des attentats terroristes du 11 septembre 2001. Nous évaluons les effets des politiques américaines de sécurité adoptées suite à ces événements, qui ont semblé reléguer le partenariat économique de la région au second plan. La dernière section présente les résultats de notre modélisation économétrique des impacts des accords de libre-échange et du resserrement des politiques de sécurité à la frontière sur les exportations canadiennes vers les États-Unis. Dans l’ensemble, nous observons que l’ALENA a eu un impact positif important sur les exportations canadiennes et que cet impact bénéfique s’est maintenu pendant les années Bush. Toutefois, le resserrement des contrôles à la frontière des États-Unis a représenté l’équivalent d’un tarif sur les exportations vers ce pays et un fardeau non négligeable pour les entreprises canadiennes.Viewed from Canada, which conducts 70-80 percent of its foreign trade with the United States, the evolution of commercial flows is a major component in assessing the George W. Bush presidency. This study evaluates the impact of trade agreements on Canadian exports to the US, with a particular emphasis on the effects of measures taken by

  14. Abordaje de una celotipia desde una perspectiva conductual.

    Directory of Open Access Journals (Sweden)

    Marcos López Hernández-Ardieta

    2010-01-01

    Full Text Available En el presente trabajo se pretende mostrar el análisis psicológico y la intervención psicoterapéutica realizada de una paciente con problemática celotípica. Dicho análisis e intervención se enmarcan en la óptica conductista radical, de modo que se pone el énfasis en los componentes claves del análisis funcional realizado y las estrategias propias de la Terapia de Aceptación y Compromiso empleadas

  15. Una correcta usabilidad para una app de smartphone

    OpenAIRE

    Romero Serrano, Ismael

    2014-01-01

    En el desarrollo de este TFG se ha hecho un especial hincapié en la aplicación de las técnicas de DCU, pues estaba interesado en la adaptación de esta metodología que se ha mostrado especialmente útil en el proceso de desarrollo de aplicaciones y sistemas informáticos complejos, al desarrollo de una app como la mía, en principio mucho más sencilla y pensada para ser utilizada de manera individual y en dispositivos móviles. En este sentido, he querido aplicar diversas técnicas de DCU durant...

  16. Optimal restoration strategies based on heuristic techniques for electrical distribution networks; Estrategias de restablecimiento optimas basadas en tecnicas heuristicas para redes de distribucion electrica

    Energy Technology Data Exchange (ETDEWEB)

    Cruz Castrejon, J. A; Islas Perez, E; Espinosa Reza, A; Garcia Mendoza, R [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)]. E-mails: adrian.cruz@iie.org.mx; eislas@iie.org.mx; aer@iie.org.mx; rgarcia@iie.org.mx

    2013-03-15

    In this paper we present a proposed solution to the problem of finding alternatives to reset faults in radial distribution networks power systems. This solution uses a deterministic method based on the definition of heuristics and whose main objectives are to improve execution time and solution quality. This search is based on the alternate repetition of two stages: a stage that attempts to reset the unconnected areas and other areas trying ballasting overloaded. [Spanish] En este articulo se presenta una propuesta de solucion al problema de busqueda de alternativas de restablecimiento para fallas en redes de distribucion radiales en sistemas electricos de potencia. Esta solucion utiliza un metodo deterministico basado en la definicion de heuristicas y cuyos objetivos principales son: mejorar el tiempo de ejecucion y calidad de la solucion. Esta busqueda se basa en la repeticion alternada de dos etapas: una etapa que intenta restablecer las areas desconectadas y otra que intenta deslastrar las areas sobrecargadas.

  17. Ejes Estratégicos de la Política Exterior para América Latina y el Caribe en los Gobiernos de George W. Bush y Barack Obama

    Directory of Open Access Journals (Sweden)

    Luis Fernando Ayerbe

    2014-01-01

    Full Text Available El texto aborda la percepción de Estados Unidos sobre las fuentes de inseguridad originarias de América Latina, considerada un área de bajo riesgo y prioridad de su política exterior. El análisis se concentra en la evaluación de las amenazas y desafíos a sus intereses estratégicos y las modalidades de actuación privilegiadas en la esfera regional, en que se verifican coincidencias entre las administraciones Demócratas y Republicanas en la adopción de un liderazgo con prerrogativas clasificatorias sobre los tipos de régimen político, con una agenda concebida como promoción de la convergencia hemisférica de democracias y economías liberales. En ese contexto, cabe destacar la prioridad atribuida a los países de la Alternativa Bolivariana para las Américas (ALBA como eje opositor de sus políticas.Palabras Clave: América Latina; Seguridad; Estados Unidos; Política Exterior. Strategic Priorities of Foreign Policy for Latin America and the Caribbean in the governments of George W. Bush and Barack ObamaAbstractThe paper approaches the U.S. perceptions about the sources of insecurity from Latin America, considered a low risk area and priority of its foreign policy. El análisis se concentra en la evaluación de las amenazas y desafíos a sus intereses estratégicos y las modalidades de actuación privilegiadas en la esfera regional, en que se verifican coincidencias entre las administraciones Demócratas y Republicanas en la adopción de un liderazgo con prerrogativas clasificatorias sobre los tipos de régimen político, con una agenda concebida como promoción de la convergencia hemisférica de democracias y economías liberales. The analysis focuses on assessing the threats and challenges to its strategic interests and privileged modes of action at the regional level, which verifies similarities between Republican and Democratic administrations in taking a leadership prerogatives qualifiers on the types political regime, with an

  18. A personal memory of the history of the group of energy and mass transference; Una memoria personal de la historia del grupo de transferencia de energia y masa

    Energy Technology Data Exchange (ETDEWEB)

    Ramos, Eduardo [Centro de Investigacion en Energia (CIE) de la UNAM, Temixco, Morelos (Mexico)

    2010-07-01

    An object that is exposed to sunlight heats up. Based on the everyday experiences, this is a claim that the majority of us would agree. In a more technical note, this object increases its temperature and internal energy. Reflection for a moment, perhaps we would come to the conclusion that the energy captured by the object exposed to solar radiation could be used in a useful fashion. It would require a much longer time of reflection and analysis to imagine the method to convert the heat into useful energy. It is precisely this analysis that has been the objective of the group of energy and mass transference of the Center for Energy Research since its foundation, and probably will remain so while it can be identified as a group of scientific research. In the following pages we will feature briefly, from a personal stand point of view the history of the work, successes and failures of the group since its inception till the present. [Spanish] Un objeto que se expone a la luz solar se calienta. Basados en la experiencia cotidiana, esta es una aseveracion con la que la mayoria de nosotros estaria de acuerdo. Dicho de manera mas tecnica, este objeto aumenta su temperatura y su energia interna. Reflexionando un instante, quiza llegariamos a la conclusion que la energia capturada por el objeto expuesto a la radiacion solar podria ser usada de manera util. Se requeriria un tiempo mucho mas largo de reflexion y analisis para imaginar el metodo para convertir el calor en energia util. Precisamente este analisis ha sido el objetivo del grupo de Transferencia de Energia y Masa del Centro de Investigacion en Energia desde su fundacion, y probablemente lo seguira siendo mientras se le pueda identificar como un grupo de investigacion cientifica. En las paginas siguientes resenaremos brevemente desde un punto de vista personal la historia del trabajo, exitos y fracasos del grupo desde su inicio hasta el presente.

  19. A long-term experimental case study of the ecological effectiveness and cost effectiveness of invasive plant management in achieving conservation goals: bitou bush control in booderee national park in eastern australia.

    Directory of Open Access Journals (Sweden)

    David B Lindenmayer

    Full Text Available Invasive plant management is often justified in terms of conservation goals, yet progress is rarely assessed against these broader goals, instead focussing on short-term reductions of the invader as a measure of success. Key questions commonly remain unanswered including whether invader removal reverses invader impacts and whether management itself has negative ecosystem impacts. We addressed these knowledge gaps using a seven year experimental investigation of Bitou Bush, Chrysanthemoides monilifera subsp. rotundata. Our case study took advantage of the realities of applied management interventions for Bitou Bush to assess whether it is a driver or passenger of environmental change, and quantified conservation benefits relative to management costs of different treatment regimes. Among treatments examined, spraying with herbicide followed by burning and subsequent re-spraying (spray-fire-spray proved the most effective for reducing the number of individuals and cover of Bitou Bush. Other treatment regimes (e.g. fire followed by spraying, or two fires in succession were less effective or even exacerbated Bitou Bush invasion. The spray-fire-spray regime did not increase susceptibility of treated areas to re-invasion by Bitou Bush or other exotic species. This regime significantly reduced plant species richness and cover, but these effects were short-lived. The spray-fire-spray regime was the most cost-effective approach to controlling a highly invasive species and facilitating restoration of native plant species richness to levels characteristic of uninvaded sites. We provide a decision tree to guide management, where recommended actions depend on the outcome of post-treatment monitoring and performance against objectives. Critical to success is avoiding partial treatments and treatment sequences that may exacerbate invasive species impacts. We also show the value of taking advantage of unplanned events, such as wildfires, to achieve management

  20. A long-term experimental case study of the ecological effectiveness and cost effectiveness of invasive plant management in achieving conservation goals: bitou bush control in booderee national park in eastern australia.

    Science.gov (United States)

    Lindenmayer, David B; Wood, Jeff; MacGregor, Christopher; Buckley, Yvonne M; Dexter, Nicholas; Fortescue, Martin; Hobbs, Richard J; Catford, Jane A

    2015-01-01

    Invasive plant management is often justified in terms of conservation goals, yet progress is rarely assessed against these broader goals, instead focussing on short-term reductions of the invader as a measure of success. Key questions commonly remain unanswered including whether invader removal reverses invader impacts and whether management itself has negative ecosystem impacts. We addressed these knowledge gaps using a seven year experimental investigation of Bitou Bush, Chrysanthemoides monilifera subsp. rotundata. Our case study took advantage of the realities of applied management interventions for Bitou Bush to assess whether it is a driver or passenger of environmental change, and quantified conservation benefits relative to management costs of different treatment regimes. Among treatments examined, spraying with herbicide followed by burning and subsequent re-spraying (spray-fire-spray) proved the most effective for reducing the number of individuals and cover of Bitou Bush. Other treatment regimes (e.g. fire followed by spraying, or two fires in succession) were less effective or even exacerbated Bitou Bush invasion. The spray-fire-spray regime did not increase susceptibility of treated areas to re-invasion by Bitou Bush or other exotic species. This regime significantly reduced plant species richness and cover, but these effects were short-lived. The spray-fire-spray regime was the most cost-effective approach to controlling a highly invasive species and facilitating restoration of native plant species richness to levels characteristic of uninvaded sites. We provide a decision tree to guide management, where recommended actions depend on the outcome of post-treatment monitoring and performance against objectives. Critical to success is avoiding partial treatments and treatment sequences that may exacerbate invasive species impacts. We also show the value of taking advantage of unplanned events, such as wildfires, to achieve management objectives at

  1. Factors affecting the effects of EDU on growth and yield of field-grown bush beans (Phaseolus vulgaris L.), with varying degrees of sensitivity to ozone

    Energy Technology Data Exchange (ETDEWEB)

    Elagoez, Vahram [Plant Biology Graduate Program, University of Massachusetts, Amherst, MA 01003 (United States)]. E-mail: velagoz@nsm.umass.edu; Manning, William J. [Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, MA 01003 (United States)

    2005-08-15

    The effects of foliar applications of ethylenediurea (EDU) on responses to ozone by field-grown bush bean (Phaseolus vulgaris L.) lines 'S156' (O{sub 3}-sensitive) and 'R123' (O{sub 3}-tolerant), and cultivars 'BBL 290' (O{sub 3}-sensitive) and 'BBL 274' (O{sub 3}-tolerant) were investigated during the 2001 and 2002 growing seasons. EDU was applied weekly to designated plants between primary leaf expansion and pod senescence. Results were compared with control plants at harvests made at pod maturation and pod senescence. In 2001, average hourly ambient O{sub 3} concentrations ranged between 41 and 59 ppb for a total of 303 h; in 2002, for 355 h. EDU applications prior to pod maturation significantly increased the number of marketable pods in 'R123', but not for the other cultivars. Harvests at pod senescence showed significant improvements in crop yield production in EDU-treated 'S156' plants, whereas for EDU-treated 'R123' plants significant reductions were determined in above-ground biomass and seed production. In contrast, results from 'BBL 290' and 'BBL 274' at both harvest points were inconclusive. Growth and reproductive responses of O{sub 3}-sensitive and O{sub 3}-tolerant bush bean plants to EDU applications varied, depending on developmental stages, duration of EDU applications, and fluctuations in ambient O{sub 3}. - Plant sensitivity to ozone, stage of plant development, number of applications of EDU and ambient ozone affect bean plant responses to EDU.

  2. Las bibliotecas AECID. Una propuesta

    OpenAIRE

    Prieto Gutiérrez, Juan José; Moreno Cámara, Alicia

    2008-01-01

    La Agencia Española de Cooperación Internacional para el Desarrollo (AECID) a través de sus Centros Culturales y Centros de Formación en Iberoamérica y África es poseedora de 22 bibliotecas repartidas en sendos continentes. Son espacios culturales, informativos, educativos y lúdicos, abiertos a todos los sectores sociales en el que los libros han dejado de ser la única fuente de información. La creación de una red bibliotecaria que las cubra y proteja se hace necesaria para su crecimiento y p...

  3. El derecho a una vivienda

    OpenAIRE

    Gledhill, John

    2010-01-01

    El derecho a la vivienda es un derecho humano básico recogido en las declaraciones internacionales y muchas constituciones nacionales. Del él puede hacerse también una lectura “burguesa”, como fundamento de la democracia liberal basada en la propiedad privada, con interesantes consecuencias cuando los ciudadanos ven que sus derechos son violados. Este artículo explora cómo va cambiando la definición del derecho a la vivienda a través de la agenda de ONU–Hábitat, y discute los puntos fuertes y...

  4. Importancia de Proteger una Marca.

    OpenAIRE

    Nerbys Hernández Dorta

    2008-01-01

    Las marcas están incluidas dentro de la rama de la Propiedad Industrial y no son más que palabras, símbolos, formas tridimensionales distintivas o figuras que se asocian a un producto o servicio para diferenciarlo y distinguirlo de los iguales o similares que se ofertan en el mercado. También reflejan una calidad constante que el consumidor espera del producto o servicio y constituyen un medio publicitario. El registro de la marca en Cuba se realiza ante la Oficina Cubana de la Propiedad ...

  5. Una historia de lo posible

    OpenAIRE

    Fernández Prieto, Lorena

    2014-01-01

    Esta investigación parte del intento de deconstruir la disciplina histórica para poner de manifiesto cómo, detrás de su fachada de pretendida objetividad, veracidad y de sus intentos por encajar bajo los parámetros de la ciencia, se esconde un relato que organiza, ordena y confecciona nuestro presente. A esta visión de la Historia como organización del presente, como escritura y construcción, contrapongo una historia como deconstrucción, como contra-historia. Esta manera de entender la h...

  6. Importancia de Proteger una Marca.

    Directory of Open Access Journals (Sweden)

    Nerbys Hernández Dorta

    2008-07-01

    Full Text Available Las marcas están incluidas dentro de la rama de la Propiedad Industrial y no son más que palabras, símbolos, formas tridimensionales distintivas o figuras que se asocian a un producto o servicio para diferenciarlo y distinguirlo de los iguales o similares que se ofertan en el mercado. También reflejan una calidad constante que el consumidor espera del producto o servicio y constituyen un medio publicitario. El registro de la marca en Cuba se realiza ante la Oficina Cubana de la Propiedad Industrial radicada en la Ciudad de la Habana o ante los Puestos de Trabajo establecidos en cada provincia del país. El mismo le otorga al titular el derecho exclusivo a su uso de modo que nadie más puede usarla en el comercio sin su autorización en territorio cubano, y además protege a la empresa y le permite consolidar su actividad empresarial e imagen ante la clientela y el mercado. En este trabajo se expone una breve reseña de lo que son las marcas, se dan algunos consejos útiles para su confección, su modo de protección en Cuba, la legislación que la protege en el país y la importancia que tiene para las empresas cubanas inscribir sus marcas.

  7. Realismo moral: una perspectiva naturalista

    Directory of Open Access Journals (Sweden)

    Michael Devitt

    2004-12-01

    Full Text Available 1. ¿Qué es el realismo moral? El artículo rechaza las respuestas habituales (Sayre-McCord, Railton en términos de verdad y significado. Estas respuestas estándares están parcialmente motivadas por el fenómeno del no-cognitivismo. Ciertamente el no-cognitivismo es problemático para formular una respuesta abiertamente metafísica, no obstante es posibleformular tal respuesta. 2. ¿Por qué creer en el realismo moral? Él es prima facie plausible, mientras que sus alternativas no lo son. Preocupación central: ¿cómo se puede lograr que el realismo moral coincida con una perspectiva naturalista del mundo? 3. ¿Y qué sucede con los argumentos en contra del realismo moral? El artículo analiza críticamente el argumentoproveniente de la “extrañeza”, el proveniente de la relatividad, el proveniente de la explicación, así como los argumentos epistemológicos. 4. El artículo concluye con algunas observaciones breves e insuficientes sobre la realización del proyecto naturalista.

  8. Application of monitoring techniques of operational parameters for the implementation of preventive and predictive maintenance programs to gas turbines; Aplicacion de tecnicas de monitoreo de parametros operacionales para la implantacion de programas de mantenimiento predictivo y preventivo en turbinas de gas

    Energy Technology Data Exchange (ETDEWEB)

    Gutierrez Villareal, Julio Cesar

    1998-12-31

    components. These techniques are: hardness testing, liquid penetrant inspection, magnetic particle inspections and metallographic examination. Chapter five describes the boroscopy inspection and its applications for a rotor analysis and gas turbine blades. Chapter six shows the results obtained and give recommendations for the vibration analysis that were carried out at a gas turbine facility. [Espanol] Esta tesis se realiza con la finalidad de implantar un programa de mantenimiento preventivo y predictivo, mediante tecnicas de monitoreo de parametros que permita sistematizar, documentar y administrar las actividades del mantenimiento. La metodologia de mantenimiento aqui descrita, se aplica a las turbinas de gas de la Terminal Maritima Dos Bocas Tabasco, Mexico. El mantenimiento preventivo se basa en la revision periodica de los equipos, mediante listas de inspeccion, donde la idea es detectar problemas que provoquen posibles fallas y realizar la reparacion o ajusted necesarios para evitarlo. Sin embargo enfrenta a la posibilidad de que el equipo este en perfecto estado y al estar en revision, tenga retrasos y problemas de arranque posteriores. El mantenimiento predictivo se basa en tecnicas que permiten la deteccion e identificacion de fallas incipientes en los equipos. Las tecnicas recomendadas en esta tesis son: Analisis de vibraciones; Evaluacion no destructivas e Inspeccion boroscopica. La estructura de la tesis consta de los capitulos siguientes: El capitulo uno describe la importancia de los programas y estrategias del mantenimiento, sus ventajas y desventajas al aplicarlas en las plantas de proceso continuo. Se plantean los procedimientos para el diseno de un programa de mantenimiento. El capitulo dos presenta la manera de planear los recursos y materiales de mantenimiento, las tecnicas de inspecciones aplicados a la turbina de gas, y finalmente se disenan listas de verificacion de inspecciones como herramienta del mantenimiento preventivo. Los capitulos siguientes

  9. 基于Simufact的柴油机连杆衬套强力旋压成形分析%Forming Analysis of Power Spinning of Diesel Engine Connecting Rod Bushing Based on Simufact

    Institute of Scientific and Technical Information of China (English)

    葛丹丹; 樊文欣

    2011-01-01

    Based on simufact spinning module, the power spinning process of connecting rod bushing was simulated, the distribution of stress and strain under steady-state was obtained, the causes of defects were explained. The study gives guidance and advice to improve the quality of connecting rod bushing.%基于Simufact旋压模块,对连杆衬套强力旋压加工过程进行了数值模拟,获得了稳定状态下应力、应变的分布规律,解释了部分缺陷产生的原因,为提高连杆衬套的质量给出了指导性建议.

  10. Les relations économiques États-Unis / Amérique latine pendant les années Bush : la nouvelle donne Economic Relations between the United States and Latin America in the Bush Years: Changing Course

    Directory of Open Access Journals (Sweden)

    Martine Azuelos

    2010-03-01

    Full Text Available Alors que l’élection de George B. Bush à la présidence des États-Unis avait pu autoriser certains à nourrir l’espoir d’une relance du processus d’intégration économique entre l’Amérique latine et l’Amérique du Nord, le bilan de ces huit années est mitigé et bien des incertitudes pesaient sur l’avenir de ce processus au moment de l’entrée en fonction de Barack Obama. Pour éclairer cette évolution, l’article replace les années Bush dans le contexte du recentrage sur la dimension économique de la relation qui fut consécutif à la fin de la guerre froide. La première partie, fondée sur l’étude des données chiffrées disponibles concernant les échanges commerciaux et des mouvements de capitaux, met en évidence une progression en trompe l’œil de ces flux, suggérant un désintérêt relatif des États-Unis pour leur traditionnelle arrière-cour. Pour rendre compte de cette nouvelle donne, la seconde partie revient sur le cadre géopolitique et géoéconomique dans laquelle s’inscrit la relation à partir de 2001.While George W. Bush’s election had promised to revive the drive towards further economic integration in the Americas, as he was leaving office eight years later the achievements of his presidency seemed rather mixed and the future of U.S.-Latin America relations uncertain. To shed light on this turnaround, this paper sets the Bush years in the wider context of post-Cold War renewed U.S. emphasis on the economic dimension of its relationship to Latin America. The first part, which focuses on quantitative data, concludes that although two-way trade and capital flows did grow significantly between 2000 and 2007, the momentum of the 1990s was largely lost. In an attempt to account for this trend, the second part focuses on the geopolitical and geoeconomic background which led to the United States’ relations with Latin America taking a new direction after 2001.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2005-07-01

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

  12. El lugar en América: de una anamorfosis ajena a una hiperrealidad propia

    Directory of Open Access Journals (Sweden)

    Capellà Miternique Hugo

    2012-12-01

    Full Text Available El objetivo del presente artículo es entender como el lugar proyectado por los europeos en América se ha transformado en una utopía real para los nuevos referentes. El lugar en América ha sufrido una anamorfosis al convertir su realidad espacio-temporal en una simulación posmoderna. En primer lugar definiremos, desde un punto de vista teórico, el proceso de anamorfosis del lugar. En segundo lugar indagaremos en el proceso de transformación desde una realidad cada vez más ficticia hasta convertirse en una ficción realizada que aparece como un nuevo referente propio. Concluiremos observando como la desvinculación espacio-temporal del lugar ha sido considerada como una nueva forma de identidad en América, configurándose como una forma de liberación poscolonial y posmoderna.

  13. Hacia una psicoterapia sin adjetivos

    Directory of Open Access Journals (Sweden)

    Miguel Sorín

    1994-01-01

    Full Text Available En un análisis crítico de los sistemas psicoterapéuticos contemporáneos, el autor comienza señalando que los progresos en medicina han sido mucho mayores que en psiquiatría. Afirma que los avances deben darse básicamente desde la psicología. Se pregunta cuál ha sido la evolución y el progreso de la psicoterapia. Afirma que la prevalencia del psicoanálisis en algunos países no es necesariamente criterio de verdad y legitimidad científica del sistema freudiano. Al indagar si han evolucionado las psicoterapias considera que algunas se cerraron, como el psicoanálisis, otras evolucionaron y se ampliaron como el conductismo. Hoy la terapia del comportamiento se ha separado considerablemente del conductismo original. La solución no es el eclecticismo. Se necesita ser congruente y sistemático. La solución es una psicoterapia sin adjetivos

  14. Una red para la gente

    Directory of Open Access Journals (Sweden)

    Raúl Trejo Delarbre

    2004-02-01

    Full Text Available La próxima Cumbre Mundial de la Sociedad de la Información ha revitalizado, en numerosos países, el debate acerca de las nuevas tecnologías de la comunicación y los usos que pueden tener. Lamentablemente en México hemos estado casi del todo ajenos a esa intensa, extensa y en otras latitudes fructífera discusión. Ni los especialistas interesados en estos temas, ni la sociedad que es a la postre beneficiaria o damnificada según sea el empleo de tales tecnologías, ni los organismos del Estado a cargo de tales asuntos, han propiciado la reflexión colectiva que nos podría permitir tanto afinar las posiciones de nuestro país rumbo a la cumbre de Ginebra y Túnez como deliberar, en ese contexto, acerca de lo mucho que nos falta para tener un país auténticamente imbricado en la construcción de una auténtica Sociedad de la Información.

  15. Borges: una textualidad del encuentro

    Directory of Open Access Journals (Sweden)

    Carlos E. Rojas C.

    2011-12-01

    Full Text Available En varias ocasiones a lo largo de su obra Borges define el texto como un encuentro con el lector. No hace de él un objeto, una cosa entre las cosas, sino un evento, un diálogo. Este artículo explora las implicaciones de esa definición del texto a partir de los ensayos de Borges, de su práctica de la lectura y la escritura, de los encuentros que tienen lugar en sus cuentos y en las resonancias que parece haber entre Borges y otro filósofo del encuentro, Louis Althusser. Borges defines the text as an encounter with the reader, several times throughout his work. He does not describe it as an object, a thing among other things, but as an event, as a dialog. This article explores the implications of such a definition of the text. It connects what Borges says in his essays with his own practice of reading and writing, and with the numerous encounters that take place in his stories. It also explores some contact points between Borges and another philosopher of the encounter, Louis Althusser.

  16. TERMODINAMICA DE ECOSISTEMAS UNA APROXIMACION

    Directory of Open Access Journals (Sweden)

    Gómez Palacio Germán Raúl

    1998-06-01

    Full Text Available La ecología actual no es ya una ciencia puramente descriptiva y autosuficiente. Dada la naturaleza compleja de los ecosistemas, ha sido necesario recurrir a disciplinas como la física, la química, y a herramientas matemáticas como la teoría de catástrofes, la teoría de fractales, la cibernética y la teoría de redes, para el estudio y predicción de su comportamiento. La termodinámica -en sus distintos estadios -también aporta a esa visión pluralista, tal vez la única aproximada al comportamiento real de un ecosistema. Se presentan algunas ideas sobre la importancia que pueden tener conceptos como la energía, la entropía, la exergía, la información, el no equilibrio en el análisis de los procesos que tienen lugar en ecosistemas.

  17. Nordihydroguaiaretic Acid from Creosote Bush (Larrea tridentata Mitigates 12-O-Tetradecanoylphorbol-13-Acetate-Induced Inflammatory and Oxidative Stress Responses of Tumor Promotion Cascade in Mouse Skin

    Directory of Open Access Journals (Sweden)

    Shakilur Rahman

    2011-01-01

    Full Text Available Nordihydroguaiaretic acid (NDGA is a phenolic antioxidant found in the leaves and twigs of the evergreen desert shrub, Larrea tridentata (Sesse and Moc. ex DC Coville (creosote bush. It has a long history of traditional medicinal use by the Native Americans and Mexicans. The modulatory effects of topically applied NDGA was studied on acute inflammatory and oxidative stress responses in mouse skin induced by stage I tumor promoting agent, 12-O-tetradecanoylphorbol-13-acetate (TPA. Double TPA treatment adversely altered many of the marker responses of stage I skin tumor promotion cascade. Pretreatment of NDGA in TPA-treated mice mitigated cutaneous lipid peroxidation and inhibited production of hydrogen peroxide. NDGA treatment also restored reduced glutathione level and activities of antioxidant enzymes. Elevated activities of myeloperoxidase, xanthine oxidase and skin edema formation in TPA-treated mice were also lowered by NDGA indicating a restrained inflammatory response. Furthermore, results of histological study demonstrated inhibitory effect of NDGA on cellular inflammatory responses. This study provides a direct evidence of antioxidative and anti-inflammatory properties of NDGA against TPA-induced cutaneous inflammation and oxidative stress corroborating its chemopreventive potential against skin cancer.

  18. Dissuasão, redução de armas nucleares e defesas antimísseis nos governos Bush e Obama

    Directory of Open Access Journals (Sweden)

    Diego Santos Vieira de Jesus

    2013-12-01

    Full Text Available O objetivo é analisar as perspectivas das administrações de George W. Bush e Barack Obama com relação à dissuasão, à redução de armas nucleares e às defesas antimísseis. Sustenta-se que ambas as administrações reafirmaram o papel fundamental das armas nucleares para a dissuasão, comprometeram-se com a redução de armas nucleares acompanhada de iniciativas para modernização e reconheceram a importância de defesas antimísseis na proteção dos EUA e de aliados. Tais perspectivas estão relacionadas à necessidade contínua de ampliar a flexibilidade para lidar com ameaças contemporâneas e à manutenção de opções diversificadas para o enfrentamento desses desafios.

  19. Genetic divergence in the common bush-tanager Chlorospingus ophthalmicus (Aves: Emberizidae) throughout Mexican cloud forests: The role of geography, ecology and Pleistocene climatic fluctuations.

    Science.gov (United States)

    Maldonado-Sánchez, Denisse; Gutiérrez-Rodríguez, Carla; Ornelas, Juan Francisco

    2016-06-01

    By integrating mitochondrial DNA (mtDNA), microsatellites and ecological niche modelling (ENM), we investigated the phylogeography of Mexican populations of the common bush-tanager Chlorospingus ophthalmicus to examine the relative role of geographical and ecological features, as well as Pleistocene climatic oscillations in driving the diversification. We sequenced mtDNA of individuals collected throughout the species range in Mexico and genotyped them at seven microsatellite loci. Phylogeographic, population genetics and coalescent methods were used to assess patterns of genetic structure, gene flow and demographic history. ENM was used to infer contractions and expansions at different time periods as well as differences in climatic conditions among lineages. The retrieved mitochondrial and microsatellite groups correspond with the fragmented cloud forest distribution in mountain ranges and morphotectonic provinces. Differing climatic conditions between mountain ranges were detected, and palaeodistribution modelling as well as demographic history analyses, indicated recent population expansions throughout the Sierra Madre Oriental (SMO). The marked genetic structure of C. ophthalmicus was promoted by the presence of ecological and geographical barriers that restricted the movement of individuals among mountain ranges. The SMO was mainly affected by Pleistocene climatic oscillations, with the moist forests model best fitting the displayed genetic patterns of populations in this mountain range. PMID:26988412

  20. Effect of Plant Density on Flowering Date, Yield and Quality Attribute of Bush Beans (Phaseolus Vulgaris L. under Center Pivot Irrigation System

    Directory of Open Access Journals (Sweden)

    Samih Abubaker

    2008-01-01

    Full Text Available This research evaluates six different planting densities (10*30, 20*30, 30*30, 40*30, 50*30, 60*30 of bean (Phaseolus Vulgaris L., Bronco variety and their impacts on yield, earliness and quality attributes using Randomized Complete Block Design (RCBD under central pivot irrigation system in the southern part of Jordan during 2007 growing season. Although, the highest planting density (10*30 cm gave the highest percent of early yield (93% in comparison to the total yield it was among the lowest yielding ability and tended to give pods with lower N,P,K and protein contents. The highest yields were obtained by 20*30 and 30*30 cm planting densities with 73 and 71% respectively of early yield related to the total yield. Stem diameter, pod dry weight as well as protein and mineral contents tended to be higher under the lower planting densities. The issue of this research seems to give clear perspectives to obtain high early yield with good enough quality under 20*30 cm bush bean under central pivot irrigation system in the desert of southern part of Jordan.

  1. La intimidad de una escritura

    Directory of Open Access Journals (Sweden)

    Roxana Páez

    2012-10-01

    Full Text Available Las notas de un bloc, las hojas sueltas que acompañan el proceso de elaboración de la primera novela de Manuel Puig son la escritura íntima donde se ve la huella de la transformación de ciertos materiales autobiográficos en ficción. En La traición de Rita Hayworth, novela de iniciación, la cuestión resulta todavía más interesante, porque es con la que Manuel Puig se inicia como autor, pero también porque es una novela sin narrador. Las notas halladas muestran el back-stage de los conflictos enunciativos durante la gestación del libro, a veces más próximas a una investigación, como arqueología de la voz, que a la construcción ficcional. Más que en sus libros siguientes, el autor es un agente de la mutación epistemológica de su propia historia.Les notes d’un cahier ou les feuillets volants qui accompagnent le processus d’élaboration du premier roman de Manuel Puig, gardent la trace de l’écriture intime, où l’on voit le changement des matériaux autobiographiques en fiction. Dans La trahison de Rita Hayworth, roman d’initiation, la question est encore plus intéressante : c’est le roman qui marque le début littéraire de son auteur, mais c’est aussi un roman sans narrateur. Les notes des archives montrent les coulisses des conflits d’énonciation qui surgissent lors de la gestation du roman. Ce sont des notes parfois plus proches d’une enquête que d’une construction fictionnelle, qui fonctionnent souvent comme archéologies de la voix. Plus encore que dans les romans qui suivent, l’auteur devient ainsi agent de la mutation épistémologique de sa propre histoire.Handwritten notes in a block, as well as some lose pages that come along with the process of the development of Manuel Puig’s first novel appear as intimate writing. We can read in them traces of the transformation of autobiographical material into fiction. In Betrayed by Rita Hayworth, a bildungsroman, the question becomes more interesting

  2. Paso superior en una ladera

    Directory of Open Access Journals (Sweden)

    Bender, O.

    1965-07-01

    Full Text Available The Redwood highway, through the Californian forest, runs on a viaduct, as it crosses a mountain slope of about 45° inclination. The firm ground is fairly deep, and as an additional constructional difficulty, it was necessary to respect the natural beauty of the countryside. A structure of portal frames were built, forming a number of short spans. These spans were bridged with metal girders, on which a 19 m wide deck was placed. The columns are hollow and have a transversal cross beam, to join each pair. There was difficulty in excavating the foundations for the columns, as it was necessary to dig through the soft top soil, and also prevent this soil from hurting the trunks of the forest trees. Another significant difficulty in the construction of this viaduct was the access to the working site, since there were no suitable platforms from which to operate the appropriate machinery. This made it necessary to do a lot of the work by manual operation. As one of the edges of the deck is very close to the mountain side, a supporting beam was erected on this side. It was made of concrete, on metal piles. The formwork for the deck structure was placed on the concrete stems of the supporting piles.La autopista denominada Redwood (California salva, con un paso superior, la ladera de un bosque cuya pendiente es del 1/1. El terreno firme se halla a bastante profundidad, añadiéndose, a los naturales problemas de la construcción, el imperativo de respetar la belleza agreste del paraje. La solución adoptada consiste en una estructura porticada, con varios tramos de pequeñas luces, salvados con vigas metálicas, sobre los que se coloca la losa del tablero, de 19 m de anchura total. Los soportes están constituidos por pórticos de dos montantes huecos (con bases de hormigón en masa por debajo del suelo, hasta el firme coronados por un cabezal. La perforación de pozos para el hormigonado de los montantes presentaba la dificultad de atravesar el terreno

  3. HACIA UNA PEDAGOGÍA FRANCISCANA

    Directory of Open Access Journals (Sweden)

    Benjamín Soto Forero

    2008-12-01

    Full Text Available El artículo busca presentar como mediante toda una manera de actuar, de ver y de pensar, se va construyendo una propuesta pedagógica franciscana; inspirada en el Evangelio y en la manera como Francisco de Asís vivió el mismo, buscando siempre la importancia de la persona humana, la fraternidad universal, el respeto por lo diferente, viviendo la cotidianidad de una manera alegre y festiva, donde la propuesta pedagógica franciscana se va dando en el caminar con el otro desde la fraternidad y el servicio.

  4. Proyecto educativo para una escuela rural

    OpenAIRE

    Galve-Pina, Ana María

    2014-01-01

    La propuesta que se desarrolla a continuación tiene la intención de dar una solución educativa a un colegio agrupado en el entorno rural. Ha sido diseñada para trabajar con niños de Educación Infantil de una clase en la que conviven alumnos de distintas edades y diversas procedencias, buscando una educación adaptada a sus diferentes características. Tanto las actividades como la metodología, así como las medidas de evaluación, objetivos propuestos y competencias a conseguir, en...

  5. Listas: Una Formalización Relacional

    OpenAIRE

    Martínez López, Pablo E.; Baum, Gabriel Alfredo

    1995-01-01

    Las Fork Álgebras constituyen un poderoso cálculo relacional para la derivación de programas. Esta clase de álgebras resulta de extender las álgebras relacionales con un nuevo operador, llama.do Jork que permite la introducción, por definición, de proyecciones. En este a.rtículo damos una axiomatización del tipo de datos lista expresada en el lenguaje de las fork álgebras. La importancia de contar con una teoría de listas expresada en dicho lenguaje, con una notación uniforme y precisa, es im...

  6. Plagio, una falta de Ética

    OpenAIRE

    Maya Sanchez-Baya; Noelia Rodríguez-Quispe

    2011-01-01

    La investigación y la publicación sehan convertido en una herramientafundamental para el desarrollo delconocimiento, los autores de los diferentesartículos cuentan con un reconocimientopor su trabajo, ya que sus investigacionespueden ser utilizadas porotros colegas como una guía práctica1 ycontribuir a ser la base para la creaciónde nueva información científica.Dentro del proceso editorial se identificanvarias faltas éticas, una de las cualeses el plagio, quemásallá de toda consideraciónacadé...

  7. Transformando mi asignatura en una empresa

    OpenAIRE

    Polo Márquez, Antonio

    2013-01-01

    En este trabajo se presenta la experiencia de adaptar una asignatura a la simulación del trabajo en una empresa. El programa de la asignatura ha sido sustituido por las fases que un trabajador debe pasar en una empresa a lo largo de su vida laboral, y el aprendizaje se ha basado en las actividades prácticas que se desarrollan dentro de la empresa. Presentamos la forma en que se ha realizado la adaptación, las actividades que se han propuesto y los resultados de la e...

  8. The use of language and its impact on energy policy discourse: A case study of the hydrogen economy and the news media during the G.W. Bush administration

    Science.gov (United States)

    Waegel, Alexander Francis

    The development of policy is subject to many different influences. The subjects are often complex and citizens must rely on information provided by third parties in order to participate in the discussion. The news media has traditionally been the primary provider of such information and are counted upon to publish unbiased accounts of events. However, the news media gets information from its own sources and this offers an opportunity for powerful, well-organized groups to influence the presentation of these topics. This is done through the creation and dissemination of constructed narratives, which remove the contexts from facts to present different conclusions (Barthes, 1957). Sourcing discusses how the news media may be influenced by powerful organizations providing free, easily published material (Herman, 1988). The 24 hour news cycle, the demand for ratings, and the impossibility of funding independent research journalism for every topic requires them to seek information from sources viewed as reliable and authoritative, such as the government or major corporations. The wealthier and more powerful organizations are better able to provide this large quantity of information in a readily publishable format and thus have the potential to influence the presentation to reflect positively on their positions. As a technologically and politically complex subject, energy policy would be particularly prone to the influence of sourcing. Hydrogen energy was used as a case study to search for the presence of sourcing. Hydrogen fuels cells offer potential for the reduction of greenhouse gasses and other benefits, but have significant disadvantages as well. While the academic community remained divided on the technology, the G.W. Bush administration offered it unwavering support. The Bush administration and the academic community both released a great deal of information about hydrogen but each set presented a very different outlook. Articles, press releases, and speeches from

  9. Educando una nueva ética global

    Directory of Open Access Journals (Sweden)

    Juliana Ferrer

    2003-09-01

    Full Text Available Desde el trasfondo global, se han configurado espacios de poder diferenciados, que motivan a la educación de un mínimo de ética global, por la aspiración de una sociedad mas justa y humana. El presente artículo analiza las implícaciones en la formación ética global, bajo el enfoque de contribuir al reforzamiento de la interdependencia de valores éticos universales. Se realiza una contrastación teórica de las corrientes epistemológicas, desde la perspectiva postmodema. Se concluye sobre la necesidad de educar para una ética global, expandiendo sinergias entre dinamismo productivo, bien social e institucionalidad democrática, por la búsqueda de una convivencia social de futuro.

  10. Este libro es una obra de arte

    OpenAIRE

    Sancho, Julio

    1998-01-01

    El título corresponde a una cita de M. Morse que elogiaba de esa forma la aparición del libro el año 1941. En la contraportada de la edición española se recogen unas palabras de A. Einstein acerca de esta obra: «Una acertada exposición de los conceptos y métodos funda- mentales de la matemática. Constituye una introducción que puede leer sin dificultad el profano, en tanto que al iniciado en matemáticas le ofrece un panorama general de sus métodos y principios básicos». No son las únicas pers...

  11. Una grammatica XML per la Domotica

    OpenAIRE

    Miori, Vittorio; Testa, Fabio

    2007-01-01

    Il progetto HATS (Home Automation Technologies and Standard) del Laboratorio di Domotica dell'ISTI-CNR, ha avuto come risultato la costruzione di una piattaforma software dedicata all'interoperabilit? dei "middleware" domotici. Una parte fondamentale su cui si basa la soluzione realizzata, ? la definizione di un middle language basato su XML dedicato alla domotica, che permette di ottenere un'astrazione sia dei servizi e delle propriet? proprie dei dispositivi, sia dei comandi utilizzati per ...

  12. Tuberculomas cerebrales en una paciente joven

    Directory of Open Access Journals (Sweden)

    Vladimir Poutvinski

    2005-07-01

    Full Text Available La tuberculosis del SNC representa cerca del 5% de los casos de tuberculosis extrapulmonar, y la meningitis es el cuadro clínico más frecuente. Una forma poco común de presentación en nuestro medio son los tuberculomas. Se refiere el caso de una paciente de 30 años de edad, hospitalizada para estudio por múltiples masas intracerebrales. Se descartaron la toxoplasmosis y la neurocisticercosis debido a la falta de respuesta al tratamiento específico, tampoco se encontró lesión tumoral primaria que sustentara una metástasis. No se llegó al diagnóstico etiológico por la imposibilidad de realizar una biopsia. Tras 5 meses, la paciente reingresa con una pleuritis por M. tuberculosis, que sugirió tuberculomas como causa de las lesiones intracerebrales. Este diagnóstico presuntivo se confirmó con una excelente respuesta a antifímicos, con desaparición de las masas intracerebrales al cuarto mes de tratamiento. El caso demuestra que es importante considerar los tuberculomas en el diagnóstico diferencial de las masas intracerebrales

  13. Evaluacion de la tecnica de contraimmunoelectroforesis para determinar la potencia antigena de las vacunas antirrabicas Evaluation ot the counterimmunoelectrophoresis technique to determine the antigenic potency of antirrabic vaccines

    Directory of Open Access Journals (Sweden)

    Graciela Miceli

    1993-12-01

    Full Text Available El método recomendado por la Organización Mundial de la Salud (OMS para la prueba de potencia de vacunas antirrábicas como producto final es la prueba NIH. Algunas técnicas in vitro se han propuesto para el control durante el proceso de produción y complementan el ensayo in vivo antes mencionado. Este trabajo presenta los resultados obtenidos cuando se utilizó la técnica de contrainmunoelectroforésis (CIE para determinar el contenido de antígenos en muestras de 84 y 40 lotes de vacunas antirrábicas producidas en tejido nervioso de cerebro de ratón lactante mediante cultivo de tejidos, respectivamente. La evaluación de las muestras en, y en torno de, las 0.3 UI por ambos métodos muestran que, en la práctica, un título CIE de 1:4 cumpliría con un mínimo de potencia de la prueba NIH. Un bajo grado de variabilidad de la prueba CIE fue observada en nuestro laboratorio cuando dos lotes de vacunas de referencia de trabajo y 7 lotes de vacunas antirrábicas, de diferente origen y actividad, fueron ensayadas en cinco pruebas independientes. Todos los títulos se ubicaron dentro de una dilución doble, lo que es indicativo de su reproducibilidad. Se observó buena sensibilidad para detectar el deterioro del antígeno en el ensayo de degradación térmica, cuando muestras de 3 lotes de vacuna líquida de cerebro de ratón lactante fueron mantenidas a4 y 37ºC cada una, por 28 días. Se evaluaron semanalmente por los ensayos de CIE y NIH. Finalmente, se observó que el ensayo de CIE podría ser utilizado por los productores para estimar el punto final de los procesos de concentración para que se corresponda con un valor antigénico deseado en la prueba de potencia NIH.The method recommended by the World Health Organization (WHO for the potency assay of human and animal rabies vaccines as final product is the NIH test. Some in vitro techniques have been proposed for in process testing and supplement the in vivo test mentioned above. This

  14. Estimation of production characteristic curves of geothermal wells and of the permeability of rocky formations through one single mass flow-pressure-enthalpy (W-P-h) measurement at the wellhead; Estimacion de curvas caracteristicas de produccion de pozos geotermicos y de permeabilidades de formaciones rocosas a partir de una sola medicion flujo masico-presion- entalpia (W-P-h) a boca de pozo

    Energy Technology Data Exchange (ETDEWEB)

    L Moya, Sara; Aragon, Alfonso [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    The proposed methodology described ahead (Moya et al.,1996; Moya et al.,1997a, 1997b and 1997c) simplifies the construction of production characteristic curves of geothermal wells and of its associated thermal productivity, in requiring one single measurement of mass flow-pressure-enthalpy (W-P-h) at the wellhead. Therefore it is an ecological option, technically and economically more feasible. On the other hand, the methodology also allows to diagnose the rocky formation absolute permeability in the well feeding zone. This permeability is usually determined through well bottom pressure tests, than in some cases are difficult to interpret. The permeability inferred by means of the proposed technology represents a complementary tool for these field tests and for the laboratory measurements on drilling cores. [Espanol] La metodologia propuesta que se describe a continuacion [Moya et al., 1995d; Moya et al., 1996; Moya et al., 1997a, 1997b y 1997c] simplifica la construccion de curvas caracteristicas de produccion de pozos geotermicos y de su productividad termica asociada al requerir solo una medicion de flujo masico-presion-entalpia (W-P-h) a boca de pozo. Es por tanto una alternativa ecologica, tecnica y economicamente mas factible. Por otra parte, la metodologia tambien permite diagnosticar el valor de la permeabilidad absoluta de la formacion rocosa en la zona de alimentacion al pozo. Esta permeabilidad se determina usualmente a partir de pruebas de presion a fondo de pozo que en algunos casos son dificiles de interpretar. La permeabilidad inferida mediante la metodologia propuesta representa una herramienta complementaria a estas pruebas de campo y a las mediciones de laboratorio sobre nucleos de perforacion.

  15. Multimedia tutorial system to aid the technical training in energy cogeneration; Sistema tutorial multimedio para apoyar la capacitacion tecnica en cogeneracion de energia

    Energy Technology Data Exchange (ETDEWEB)

    Kemper Valverde, Nicolas; Lara Rosano, Felipe; Guerrero Briseno, Pedro [Laboratorio de Inteligencia Artificial, Instituto de Ingenieria UNAM, Mexico, D. F. (Mexico); Monedero De La Vega, Arturo F. [Seccion Ingenieria Energetica, DEPFI UNAM, Mexico, D. F. (Mexico)

    1994-12-31

    The incorporation of computer aided teaching technologies increases the efficiency in the transmission and acquisition of knowledge, allowing the handling of large information volumes, the knowledge homogenization among the students, the availability, the massive teaching and the permanent updating of the same. On the other hand, considering that all energy saving policy must be supported in a training and dissemination program of the respective energy technologies an immediate option is the use of computerized systems of teaching-learning. Precisely, in this paper, are presented the fundamental technical aspects for the development of a tutorial expert system, to aid the training in energy cogeneration, trying to integrate in the application, the usage of multimedia tools with the intelligent handling of the teaching-learning process through the inference machine of an expert system. [Espanol] La incorporacion de metodologias de ensenanza auxiliada por computadora incrementa la eficiencia en la transmision y adquisicion del conocimiento, permitiendo la manipulacion de grandes volumenes de informacion, la homogeneizacion del conocimiento en los educandos, la disponibilidad, masificacion y la permanente actualizacion del mismo. Por otro lado, considerando que toda politica de ahorro de energia debe estar soportada en un programa de capacitacion y de divulgacion de las tecnologias energeticas respectivas, una alternativa inmediata es el empleo de sistemas computarizados de ensenanza-aprendizaje. Precisamente, en este trabajo, se presenta los aspectos tecnicos fundamentales del desarrollo de un sistema experto tutorial para apoyar la capacitacion en cogeneracion de energia, tratando de integrar en la aplicacion, el empleo de las herramientas multimedios con el manejo inteligente del proceso de ensenanza-aprendizaje a traves de la maquina de inferencia de un sistema experto.

  16. Effects of solar UV-B radiation on growth, flowering and yield of central and southern European bush bean cultivars (Phaseolus vulgaris L.)

    International Nuclear Information System (INIS)

    Different cultivars of bush beans (Phaseolus vulgaris L.) originating from Central and Southern Europe were grown from July to August/September 1993 up to 7 and 8 weeks, respectively, in two greenhouses covered by different UV-B-absorbing (280-320nm) plastic foils. By using the ambient UV-B radiation of the southern location (Portugal, 38.7°N, 9.1°W) in one of the greenhouses as intense UV-B radiation compared to the reduced radiation in the second greenhouse at the same place, a difference in UV-B of about 8–10% was simulated. All cultivars examined showed significant reductions in height of up to 31,8% in most growth phases under intense UV-B. Also fresh and dry weight as well as leaf area were reduced under intense UV-B in the cultivars Purple Teepee, Cropper Teepee and Goldstrahl, and in early growth phases also in Coco bianco, but with ongoing development this cultivar caught up. Cultivars Hilds Maja, Primel, Manata and Cannellino exhibited no UV-B effects on weight and leaf area. A flowering delay of up to 1 day was observed under intense UV-B in several cultivars. Probably due to this delay the yield (fresh weight of fruits) decreased in all cultivars up to 55% under intense UV-B at harvest time, while the potential yield (sum of buds, opened flowers and fruits) was reduced only in the cultivars Cropper Teepee, Purple Teepee, Cannellino and Goldstrahl. The UV-sensitivity index (UVSI) calculated according to the UV induced changes in growth, dry weight and yield at the second harvest date has shown that all cultivars are UV-sensitive, however the index was numerically higher for Southern European cultivars (average = 2.5) than for Central European ones (average = 2.3) which means that the first group was slightly less UV-sensitive than the second. (author)

  17. Responses of sensitive and tolerant bush beans (Phaseolus vulgaris L.) to ozone in open-top chambers are influenced by phenotypic differences, morphological characteristics, and the chamber environment

    Energy Technology Data Exchange (ETDEWEB)

    Elagoez, Vahram [Plant Biology Graduate Program, University of Massachusetts, Amherst, MA 01003 (United States)]. E-mail: velagoz@nsm.umass.edu; Manning, William J. [Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, MA 01003 (United States)

    2005-08-15

    Responses of bush bean (Phaseolus vulgaris L.) lines 'S156' (O{sub 3}-sensitive) and 'R123' (O{sub 3}-tolerant), and cultivars 'BBL 290' (O{sub 3}-sensitive) and 'BBL 274' (O{sub 3}-tolerant) to ambient ozone (O{sub 3}) were investigated during the 2001 and 2002 growing seasons. Seedlings were grown in pots inside open-top chambers (OTCs), with charcoal filtered (CF) and non-filtered (NF) ambient air, and in non-chambered ambient air (AA) plots. Growth parameters from individual plants were evaluated after harvests at the end of vegetative (V{sub 4}) and reproductive (R{sub 10}) growth phases. Results at V{sub 4} indicated that CF did not provide additional benefits over NF in 'S156' in 2001 and 2002. In contrast, exposure to CF significantly impaired the growth of 'R123'. At the end of R{sub 10}, 'S156' produced more pods, most of which remained immature, and contained fewer seeds or were more frequently aborted, whereas pods produced in 'R123' reached pod maturation and senescence more consistently. Despite increased seed weights inside the OTCs, as observed in 'S156', differences between the two lines were insignificant when grown outside OTCs. Results from the 'BBL 290'/'BBL 274' pair, especially at V{sub 4} phase, remained inconclusive. Plant morphological characteristics, variabilities in environmental conditions, and 'chamber effects' inside OTCs were influential in determining plant response to ambient O{sub 3}. - Phenotypic differences, morphological characteristics, and 'chamber effects' inside OTCs are equally influential in determining the responses of beans to O{sub 3}.

  18. The occurrence and distribution of Tuckerella japonica (Acari: Tuckerellidae) on tea bushes, Camellia sinensis and C. assamica, in Alabama, Georgia and South Carolina, USA.

    Science.gov (United States)

    Childers, Carl C; Ebert, Timothy A; Rogers, Michael E; Shepard, Merle

    2016-08-01

    Adults, immatures and eggs of Tuckerella japonica (Ehara) were collected from unknown clones or varieties of Camellia sinensis (L.) O. Kuntze tea bushes in the Clemson University Farm, Coastal Research and Education Center, Charleston, South Carolina; from Assam hybrids in The Caw Caw Nature Preserve in Ravenel, SC; from C. sinensis and C. assamica (Masters) in the Charleston Tea Plantation on Wadmalaw Island, SC; C. sinensis in the Fairhope Tea Plantation in Fairhope, Alabama; and from C. sinensis 'Rosea' and a C. sinensis and C. assamica hybrid in Savannah and Ellabell, Georgia, between 1994 and 2015. This mite was consistently collected from 1-, 2- and 3+-year-old wood of tea plants with significantly greater numbers collected from 2-year-old wood. All stages of the mite were found within longitudinally split areas of the wood where underlying green bark tissues were exposed. As 1-year-old wood matured, there was increased splitting of the bark with increased mite presence. Mature green fruit (= developing seed pods) of tea were also frequented by T. japonica between June-July and October and their numbers were no greater than those on 1- or 3+-year wood. When the fruit were small (March-May) or as they hardened in late fall, they were not suitable feeding sites for this mite. Very few T. japonica were collected from 50 mature, inner or outer leaf samples with none usually found. Tuckerella japonica has multiple, overlapping generations and occurs on tea throughout the year in Alabama, Georgia and South Carolina, USA. PMID:27294360

  19. Acquired changes in stomatal characteristics in response to ozone during plant growth and leaf development of bush beans (Phaseolus vulgaris L.) indicate phenotypic plasticity

    International Nuclear Information System (INIS)

    Bush bean (Phaseolus vulgaris L.) lines 'S156' (O3-sensitive)/'R123' (O3-tolerant) and cultivars 'BBL 290' (O3-sensitive)/'BBL 274' (O3-tolerant) were used to study the effects of O3 on stomatal conductance (g s), density, and aperture size on leaf and pod surfaces with the objective of establishing links between the degree of plant sensitivity to O3 and plasticity of stomatal properties in response to O3. Studies in open-top chambers (OTCs) and in continuously stirred tank reactors (CSTRs) established a clear relationship between plant developmental stages, degrees of O3 sensitivity and g s: while 'S156' had higher g s rates than 'R123' earlier in development, similar differences between 'BBL 290' and 'BBL 274' were observed at later stages. G s rates on the abaxial leaf surfaces of 'S156' and 'BBL 290', accompanied by low leaf temperatures, were significantly higher than their O3-tolerant counterparts. Exposure to O3 in CSTRs had greater and more consistent impacts on both stomatal densities and aperture sizes of O3-sensitive cultivars. Stomatal densities were highest on the abaxial leaf surfaces of 'S156' and 'BBL 290' at higher O3 concentrations (60 ppb), but the largest aperture sizes were recorded on the adaxial leaf surfaces at moderate O3 concentrations (30 ppb). Exposure to O3 eliminated aperture size differences on the adaxial leaf surfaces between sensitive and tolerant cultivars. Regardless of sensitivity to O3 and treatment regimes, the smallest aperture sizes and highest stomatal densities were found on the abaxial leaf surface. Our studies showed that O3 has the potential to affect stomatal plasticity and confirmed the presence of different control mechanisms for stomatal development on each leaf surface. This appeared to be more evident in O3-sensitive cultivars. - O3 has the potential to affect stomatal development and the presence of different control mechanisms on each leaf surface is confirmed

  20. Desarrollo de una red inalámbrica en Bogarra

    OpenAIRE

    León Manzano, Miguel

    2012-01-01

    Implementación de una red inalámbrica en una zona extensa de tipo rural, formada por una red de transporte y una red de puntos de acceso. En ella se utiliza una combinación de las tecnologías WiMAX y WiFi. Mientras que los usuarios pueden hacer uso de dos zonas de cobertura según estándares 802.11 y 802.16. Implementació d'una xarxa sense fils en una zona extensa de tipus rural, formada per una xarxa de transport i una xarxa de punts d'accés. En ella s'utilitza una combinació de les tecnol...

  1. ¿Madre hay una sola?

    Directory of Open Access Journals (Sweden)

    Bravi, Claudio

    2005-01-01

    Full Text Available Un patrón de herencia uniparental libre de recombinación unido a una alta tasa de evolución molecular han hecho del ADNmt una herramienta de alta resolución en el estudio del origen y evolución de las poblaciones humanas. La existencia de una robusta filogenia global, basada en >2.000 genomas mitocondriales completos, y de más de 30.000 secuencias de la Región Hipervariable I (RHV-I publicadas a la fecha permiten evaluar los patrones de distribución étnico/geográfica y las afinidades extra-continentales de los linajes maternos presentes en América. El análisis de ∼4.000 RHV-I publicadas para Nativos Americanos permite describir: a una distribución recíprocamente excluyente para varios grupos monofiléticos de linajes maternos; b un origen "híbrido" para las poblaciones peri-árticas; c una notable pérdida de diversidad respecto de Asia: en todo el continente americano, desde Alaska a la Patagonia, coexisten hoy menor cantidad de haplogrupos y sub-haplogrupos mitocondriales que en cualquier población indígena siberiana.

  2. Un nuevo orden mundial, una ética universal, una nueva educación

    OpenAIRE

    Martínez Sánchez, Amparo

    2005-01-01

    RESUMEN: Este artículo ofrece unas reflexiones sobre la urgencia de establecer un nuevo orden mundial que exige: «una ética universal», «una nueva educación», «un mundo en paz». Se subraya que es necesaria una educación que esté al servicio: del desarrollo económico de los pueblos, particularmente de los pueblos del Sur; de la justicia cultural global y del diálogo de civilizaciones; de la democratización de todas las sociedades. Una educación que tenga como base un humanismo de carácter univ...

  3. METHODOLOGY FOR FROST-RESISTANCE DETERMINING OF GRAPE VARIETIES (BASED ON EXAMPLE OF STAGE AND CHARACTER OF DAMAGING WINTER BUDS IN GRAPE BUSHES IN JANUARY 2015 IN ZAO “POBEDA” IN TEMRIUK DISTRICT

    Directory of Open Access Journals (Sweden)

    Matuzok N. V.

    2015-02-01

    Full Text Available In January 2015, at the Vineyard and ZAO "Pobeda" in Temryuk District of the Krasnodar region, the thermometer dropped to minus 21,6 C, which resulted in significant damage to the central wintering buds. The article presents a method of determining the degree of damage of wintering buds. Based on the results of inspection of variety by sections divided into 3 groups. Group 1: saved between 40 and 72% central. This group includes the following 7 varieties : Pervenets Magaracha (uch. 64 Gibernal (uch. 74/3, Viorica (uch. 77, Riton (uch. 66, Riesling (uch. 82, Traminer (uch. 73/2, Chardonnay (uch. 73/3. Cutting of bushes should be carried out by the usual way. The task of cutting - compensate the loss of crops due to leaving the greater load. Group 2: Central buds was damaged nearly 70-85%, saved from 20 to 35% of replacement buds. This group includes Merlot (uch. 83, Tsitronyy Magaracha (uch. 69, Augustine (uch. 66, Saperavi (uch. 79, Chardonnay (uch. 74/1, Muscat white (uch. 73 Cabernet Sauvignon (uch. 80. During cutting should be left as much as possible of annual shoots and well-developed secondary shoots. Group 3: damaged more than 85% of central buds, replacement buds significantly damaged . To this group assigned Saperavi (uch. 80, Pinot blanc (uch. 74, Merlot (uch. 80/2, Moldova (uch. 70, Chardonnay (uch. 68, Moldova (uch. 22 Kaberne- Sauvignon (uch. 68, Moldova (uch. 38, Arkadia (uch. 78, Tsimlyansky black (uch. 68. Pre-cutting consists in removing all clearly dead and unusable parts of the bush (dried vines, stumps, annual shoots that will accelerate the development of shoots from the angular buds and resting buds. Considering the high plasticity of grape plants, can not only in accelerated way to restore the crown of bushes damaged by frost, but also get a crop in the current year, using special methods of agricultural technology

  4. Plagio, una falta de Ética

    Directory of Open Access Journals (Sweden)

    Maya Sanchez-Baya

    2011-12-01

    Full Text Available La investigación y la publicación sehan convertido en una herramientafundamental para el desarrollo delconocimiento, los autores de los diferentesartículos cuentan con un reconocimientopor su trabajo, ya que sus investigacionespueden ser utilizadas porotros colegas como una guía práctica1 ycontribuir a ser la base para la creaciónde nueva información científica.Dentro del proceso editorial se identificanvarias faltas éticas, una de las cualeses el plagio, quemásallá de toda consideraciónacadémica o moral puedeafectar positivamente o negativamentela importancia de los resultados sobreun paciente; aunque se copien buenosartículos, se pueden contener errores y,al plagiarlos (en lugar de validarlos adecuadamente,lo único que se consiguees aumentar la confianza en datos erróneos

  5. Tuberculomas cerebrales en una paciente joven

    Directory of Open Access Journals (Sweden)

    Vladimir Poutvinski

    2005-07-01

    Full Text Available La tuberculosis del SNC representa cerca del 5% de los casos de tuberculosis extrapulmonar, y la meningitis es el cuadro clínico más frecuente. Una forma poco común de presentación en nuestro medio son los tuberculomas. Se refiere el caso de una paciente de 30 años de edad, hospitalizada para estudio por múltiples masas intracerebrales. Se descartaron la toxoplasmosis y la neurocisticercosis debido a la falta de respuesta al tratamiento específico, tampoco se encontró lesión tumoral primaria que sustentara una metástasis. No se llegó al diagnóstico etiológico por la imposibilidad de realizar una biopsia. Tras 5 meses, la paciente reingresa con una pleuritis por M. tuberculosis, que sugirió tuberculomas como causa de las lesiones intracerebrales. Este diagnóstico presuntivo se confirmó con una excelente respuesta a antifímicos, con desaparición de las masas intracerebrales al cuarto mes de tratamiento. El caso demuestra que es importante considerar los tuberculomas en el diagnóstico diferencial de las masas intracerebralesTuberculosis of the central nervous system accounts for approximately 5% of all cases of extrapulmonary tuberculosis, mainly in the form of meningitis. Tuberculomas are uncommon entities. We present the case of a 37 year old woman with intracerebral lesions. Toxoplasmosis and neurocysticercosis were considered as possible etiologies, but specific treatment administration did not produce any results. There were no data suggesting a metastatic origin. Biopsy was unavailable. Five months later the patient developed tuberculous pleuritis wich suggested that intracerebral lesions could be tuberculomas. This diagnosis was confirmed by the results of antituberculous treatment the: intracerebral lesions disappeared on the fourth month of therapy. This case shows that tuberculomas should be kept in mind in the differential diagnosis of intracerebral masses

  6. Melatonina: actualidad de una hormona olvidada

    OpenAIRE

    José Illnait-Ferrer

    2012-01-01

    Los primeros indicios de la existencia de una sustancia segregada por la glándula pineal se conocieron en 1917. Al alimentar renacuajos con un extracto de dicha glándula, se intensificaron las manchas obscuras en la piel de estos animales, debido a la contracción de los melanóforos. Esta sustancia, a la que se le llamó melatonina (N- acetil-5-metoxitriptamina), fue aislada por primera vez en 1958. La melatonina, una hormona cuya importancia no fue reconocida hasta hace un tiempo relativamente...

  7. Esofagitis necrotizante aguda: Una entidad inusual

    OpenAIRE

    Silvana E. Pramparo; Pablo M. Ruiz; Rogelio Flores Valencia; José Rodeyro (h)

    2010-01-01

    La esofagitis necrotizante aguda (ENA), también denominada esófago negro, es una rara enfermedad poco descripta en la literatura médica. Describimos el caso de un hombre de 80 años, con hemorragia digestiva alta quien desarrolló un esófago negro luego de un episodio de hipotensión. La necrosis fue confirmada histológicamente. Los pacientes se presentan con hematemesis y melena en más del 70% de los casos. Los hallazgos endoscópicos muestran una coloración negruzca de la mucosa esofágica. El d...

  8. UNITIERRA: Una Universidad de los Movimientos Sociales

    OpenAIRE

    Figueredo Benzaquen, Júlia

    2014-01-01

    La pregunta que tratamos de responder en este artículo es si la Universidad de la Tierra (Unitierra) en Chiapas – México, es un espacio de educación no formal decolonial y de emergencia emancipadora. Una experiencia decolonial y emancipadora es la que reacciona a la colonialidad vigente y constituye utopías realistas. Dentro de la educación esto significa apostar en "otra educación". La Unitierra constituye una comunidad educativa que busca la resistencia y transformación social. La Unitierra...

  9. Computadores moleculares: una tecnología

    OpenAIRE

    Ortiz Triviño, Jorge Eduardo

    2010-01-01

    En este artículo se explican algunos detalles básicos para la realización de computadores moleculares basados en ADN; describe el método general para realizar programas en un computador molecular. Se concluye, que la labor de construcción e implementación de esos computadores no es tarea exclusiva del Ingeniero de sistemas sino, y con una participación importante, de profesionales en genética, medicina, biología y ciencias relacionadas. De otro lado, aunque es una tecnología que se encuentra ...

  10. Aprendizaje Temprano de una Segunda Lengua

    OpenAIRE

    Muñoz Redondo, Mª Carmen; López Bautista, Dolores

    2003-01-01

    El aprendizaje temprano de una lengua extranjera supone el conocimiento por parte de los docentes de las características psicoevolutivas del alumnado de la etapa infantil, asi como de las estrategias didácticas y recursos metodológicos propiados para la enseñanza de un idioma. Queremos dar especial relevancia a la enseñanza y aprendizaje de una segunda lengua basándonos en nuestra experiencia docente en el ámbito de la enseñanza del inglés en Educación Infantil.

  11. Una herramienta imprescindible: el analizador de protocolos

    OpenAIRE

    Mayordomo Pérez, Samuel

    2003-01-01

    Un analizador de protocolos es un equipo de telecomunicaciones capaz de monitorizar el tráfico que pasa por una red e interpretarlo mediante unas reglas establecidas (protocolos). Bajo esta definición simplista se esconden unos equipos tecnológicamente muy avanzados, que han desempeñado y desempeñan un papel fundamental en el desarrollo de las telecomunicaciones. Cuando hablamos de redes de telecomunicaciones, tenemos la certeza de que los analizadores de protocolos han participado en al...

  12. QUE LA LECTURA NO SEA UNA TORTURA

    OpenAIRE

    Calderón-Margaride, Stella

    2015-01-01

    El presente Trabajo Fin de Grado propone una intervención de animación a la lectura en el segundo curso de Educación Primaria, como recurso fundamental para fomentar el interés de los niños por la lectura desde los primeros cursos. La lectura es, sin duda, una de las claves fundamentales del aprendizaje y el éxito escolar, así como, un hábito placentero. Nos ayuda a comprender mejor el mundo en el que vivimos, a comunicarnos y favorece el pensamiento crítico a la par que la creatividad. ...

  13. Tuberculomas cerebrales en una paciente joven

    OpenAIRE

    Vladimir Poutvinski; José Rojas- Solano; José Fuchs- Cordon

    2005-01-01

    La tuberculosis del SNC representa cerca del 5% de los casos de tuberculosis extrapulmonar, y la meningitis es el cuadro clínico más frecuente. Una forma poco común de presentación en nuestro medio son los tuberculomas. Se refiere el caso de una paciente de 30 años de edad, hospitalizada para estudio por múltiples masas intracerebrales. Se descartaron la toxoplasmosis y la neurocisticercosis debido a la falta de respuesta al tratamiento específico, tampoco se encontró lesión tumoral primaria ...

  14. Asistencia personal: herramienta para una vida independiente

    OpenAIRE

    López, Mercedes; Ruiz, Susana

    2013-01-01

    A través del presente artículo se realiza un estudio sobre el Movimiento de Vida Independiente y la figura del Asistente Personal en España. Dicho movimiento defiende una visión distinta sobre el mundo de la discapacidad, planteada por las propias personas con diversidad funcional que fomentan su propia autonomía e independencia y apuestan, por tanto, por una manera diferente de gestionar las políticas públicas de atención a la dependencia. La figura del Asistente Personal, poco desarrollada ...

  15. PLAN DE EMPRESA PARA UNA ESCUELA INFANTIL

    OpenAIRE

    ALBERT SANCHIS, LAURA

    2014-01-01

    La finalidad de este trabajo es la creación de una escuela infantil con una educación diferenciada y de calidad. Esta diferenciación se basa en tres pilares que son el inglés como lengua única, la inteligencia emocional y la temprana interacción con las nuevas tecnologías. Los cambios que se han sufrido durante dos décadas como la globalización o las nuevas tecnologías han cambiado el mundo que nos rodea y la forma de ver y hacer las cosas. En este contexto tan abierto, en el que la inf...

  16. Proyecto de una eco-aldea

    OpenAIRE

    López Fernández, Marcos

    2008-01-01

    Proyecto que plantea la construcción de una eco-Aldea en el término municipal de Monbeltrán, provincia de Ávila. Detrás de este proyecto hay un grupo de familias que llevan años practicando el estilo de vida propio de una eco-aldea, cultivando la tierra de forma ecológica, en distintos puntos de la geografía del país y que han decidido reunirse para llevar adelante un proyecto común inspirado por los valores ecologistas y de vida en la naturaleza que comparten. La eco-Ald...

  17. Daniel Mato: una vida de interculturalidad

    Directory of Open Access Journals (Sweden)

    Alejandro Maldonado Fermín

    2011-04-01

    Full Text Available El presente artículo es una biografía intelectual necesariamente incompleta de uno de los autores latinoamericanos contemporáneos más emblemáticos y polémicos en el campo de los estudios sobre cultura, política y comunicación: Daniel Mato. Mediante el recorrido por algunos momentos clave de su vida y la manera como éstos guardan relación con sus obras, se ofrece una panorámica de este intelectual-activista, como forma de homenajear su trayectoria intelectual.

  18. Una nueva e interesante passiflora de colombia

    OpenAIRE

    Uribe Uribe Lorenzo

    2012-01-01

    En el material botánico llegado recientemente al Herbario Nacional Colombiano he encontrado una interesantísima Passiflora, descubierta cerca del Puerto de Buenaventura en el Departamento del Valle del Cauca. Su estudio me mostró que se trataba de una especie de la rara Sección Tryphostemmatoides Harms (considerada como Sub-género por Killip) , que comprende unos pocos bejucos herbáceos de hojas sencillas e Inflorescencias constituidas por un pedúnculo que termina en un largo zarcillo y que s...

  19. Clinimetría, una herramienta indispensable

    Directory of Open Access Journals (Sweden)

    José Francisco Díaz-Coto

    2011-02-01

    Full Text Available Si la meta terapéutica de la AR es lograr y mantener el menor grado de actividad o incluso de remisión, el manejo de la AR debe de incluir una evaluación cuantitativa clara de la inflamación de la artritis reumatoide en forma sistemática y regular. Debido a la alta variabilidad de la actividad de la AR, como también de la diversidad de sus otras manifestaciones, no es posible que una simple medición pueda realmente capturar la actividad global de la enfermedad.

  20. Farvel, Bush: Bush & Co blev ramt af virkeligheden

    DEFF Research Database (Denmark)

    Ashbee, Edward

    2009-01-01

    For fire år siden troede alle, at demokraternes dage var talte i USA. Og at de neokonservative republikaneres greb om magten ville fortsætte i mange år. Men udviklingen overhalede prognoserne, for på tirsdag bliver Barack Obama - der var Senatets mest progressive medlem - USA's næste præsident...

  1. Acquired changes in stomatal characteristics in response to ozone during plant growth and leaf development of bush beans (Phaseolus vulgaris L.) indicate phenotypic plasticity

    Energy Technology Data Exchange (ETDEWEB)

    Elagoez, Vahram [Plant Biology Graduate Program, University of Massachusetts, Amherst, MA 01003 (United States)]. E-mail: velagoz@nsm.umass.edu; Han, Susan S. [Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, MA 01003 (United States); Manning, William J. [Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, MA 01003 (United States)

    2006-04-15

    Bush bean (Phaseolus vulgaris L.) lines 'S156' (O{sub 3}-sensitive)/'R123' (O{sub 3}-tolerant) and cultivars 'BBL 290' (O{sub 3}-sensitive)/'BBL 274' (O{sub 3}-tolerant) were used to study the effects of O{sub 3} on stomatal conductance (g {sub s}), density, and aperture size on leaf and pod surfaces with the objective of establishing links between the degree of plant sensitivity to O{sub 3} and plasticity of stomatal properties in response to O{sub 3}. Studies in open-top chambers (OTCs) and in continuously stirred tank reactors (CSTRs) established a clear relationship between plant developmental stages, degrees of O{sub 3} sensitivity and g {sub s}: while 'S156' had higher g {sub s} rates than 'R123' earlier in development, similar differences between 'BBL 290' and 'BBL 274' were observed at later stages. G {sub s} rates on the abaxial leaf surfaces of 'S156' and 'BBL 290', accompanied by low leaf temperatures, were significantly higher than their O{sub 3}-tolerant counterparts. Exposure to O{sub 3} in CSTRs had greater and more consistent impacts on both stomatal densities and aperture sizes of O{sub 3}-sensitive cultivars. Stomatal densities were highest on the abaxial leaf surfaces of 'S156' and 'BBL 290' at higher O{sub 3} concentrations (60 ppb), but the largest aperture sizes were recorded on the adaxial leaf surfaces at moderate O{sub 3} concentrations (30 ppb). Exposure to O{sub 3} eliminated aperture size differences on the adaxial leaf surfaces between sensitive and tolerant cultivars. Regardless of sensitivity to O{sub 3} and treatment regimes, the smallest aperture sizes and highest stomatal densities were found on the abaxial leaf surface. Our studies showed that O{sub 3} has the potential to affect stomatal plasticity and confirmed the presence of different control mechanisms for stomatal development on each leaf surface. This

  2. Procedimiento para la caracterización de una celda de punto triple de agua Isotech en el LATU

    Directory of Open Access Journals (Sweden)

    Ofelia Robatto

    2011-05-01

    Full Text Available La realización en el punto triple de agua es crucial para una mejor aproximación a la Escala Internacional de Temperatura (ITS-90, ya que la definición de esta última está directamente vinculada al punto fijo citado. Es necesario conocer la influencia de la presión hidrostática en el punto triple de agua para corregir los valores de resistencia medidos y obtener una mejor aproximación al valor real de la temperatura en dicho punto.Este artículo describe las dificultades encontradas al estudiar el perfil térmico correspondiente a una celda de punto triple de agua comercial bajo condiciones normales de operación con un baño Dewar termostatizado con hielo picado. Este trabajo fue llevado a cabo en dos fases: en la primera se detectaron problemas con los perfiles de temperatura, cuyo comportamiento era lejano al ideal. Para mejorar dicho comportamiento se hicieron cambios en el equipamiento, con el fin de minimizar el tiempo de estabilización de la celda y mejorar la transferencia de calor. El aislamiento del baño fue mejorado y se colocó un dispositivo ecualizador de temperatura de cobre en el pozo de la celda. Los resultados se discuten en el presente artículo.AbstractThe Realization of the Triple Point of Water (TPW is of main importance when approximating to the International Temperature Scale of 1990 (ITS-90, because it is properly involved in its definition. Therefore it is necessary to know the Hydrostatic Pressure influence at the Triple Point of Water to correct the values of resistance measured and to obtain a better approximation of the real temperature of this point. This article shows the difficulties found when studying the thermal profile of one commercial cell of the triple point of water under normal operation conditions in a Dewar thermostatic bath with crushed ice. The work was performed in two phases. In the first phase problems were detected with the temperature profiles, whose behaviors were far away from

  3. Sistema gestor de recursos para una arquitectura grid

    OpenAIRE

    Ramírez Fernández, Alberto

    2015-01-01

    Sistema gestor de recursos para una arquitectura grid que consta de una aplicación web que permite listar y eliminar estos recursos, una interfaz de programación de aplicaciones RESTful que actúa como servidor central para recopilar información, y un agente, residente en el sistema operativo, que envía periódicamente datos de la máquina a este servidor. Sistema gestor de recursos per a una arquitectura grid que consta d'una aplicació web que permet llistar i eliminar aquests recursos, una ...

  4. Perspectivas de una estrategia nacional de competitividad

    Directory of Open Access Journals (Sweden)

    Roberto Gutiérrez

    1997-06-01

    Full Text Available En los años cincuentas surgió una amplia perspectiva teórica llamada la teoría de la modernización, la cual ha tenido una gran difusión en las ciencias sociales desde entonces. La "modernización" era el camino hacia el desarrollo de un país. La pretendida modernidad incluía una economía liberalizada, un sistema político democrático y una cultura universal. Hoy, la receta para lograr el desarrollo consiste en ser competitivos en los mercados mundiales. Las promesas de la modernización y la competitividad no se han convertido ni se convertirán en realidad. En el presente ensayo hay un examen del devenir histórico de las teorías de la modernización y de las ideas sobre competitividad para resaltar sus similitudes, sus afirmaciones y aquello que está ausente en ambas, y analizar el resultado de sus promesas en relación con el desarrollo nacional. No conocer la historia del descrédito de las teorías sobre la modernización es condenarse a repetirla; mínimo, a reciclarla con unas ideas que son variaciones alrededor del mismo tema. Un análisis de los supuestos, postulados y prescripciones compartidos por las perspectivas que tratan sobre la modernización y la competitividad de nuestras sociedades permite apreciar el alcance de la actual estrategia nacional de competitividad en un país como Colombia.

  5. Una panoramica sugli inventari archivistici nel web

    Directory of Open Access Journals (Sweden)

    Federico Valacchi

    2011-06-01

    Full Text Available In Italia il panorama degli strumenti di ricerca archivistica on-line è in continua espansione. Esso è caratterizzato da una accentuata multiformità redazionale e scientifica, segnato da articolate strategie di pubblicazione ed è costituito sia dall’insieme di dati pregressi confluiti nel web, sia da strumenti di più recente generazione. In mancanza del SAN (Sistema Archivistico Nazionale, non ancora ultimato, i punti di riferimento del sistema sono rappresentati dalla Guida Generale, dal  SIAS (Sistema Informativo degli Archivi di Stato e dal SIUSA (Sistema Informativo Unificato per le Soprintendenze Archivistiche. Inoltre, i singoli archivi di stato hanno progetti indipendenti di pubblicazione on-line dei propri strumenti, attraverso formati come il PDF, l'HTML o l'XML/EAD. In quest'ambito, va segnalata un'iniziativa dell’ICAR (Istituto Centrale per gli ARchivi, il quale ha pubblicato una ricognizione degli inventari realizzati da ogni Archivio e già disponibili online su SIAS e sui siti degli Istituti archivistici. Per quanto riguarda il SIUSA, esso offre, in collaborazione con progetti regionali, una vasta gamma di inventari, di cui due validi esempi sono costituiti dal progetto Rinasco in Lazio e dal .DOC in Umbria. Infine, vi sono i sistemi informativi tematici, come Archivi del Novecento, progetto volto a costituire una rete di archivi per la storia italiana. L'offerta è quindi molto vasta, ma al fine di un esaustivo controllo di una realtà così complessa, è necessaria la strutturazione di un sistema federato di risorse locali o tematiche interoperabili e compatibile con SIUSA e/o con il nascente SAN.

  6. The Woodlands: Una forma diferente de gobernar

    Directory of Open Access Journals (Sweden)

    Raquel Insa-Ciriza

    2010-06-01

    Full Text Available The Woodlands (Texas es uno de los mejores ejemplos de éxito de los partenariados público-privados entre el Departamento de Urbanismo y Vivienda Americano (Department of Housing and Urban Development, US - HUD y la empresa privada. The Woodlands, que fue creada como una «Nueva Ciudad» por la compañía Mitchell Energy & Development Corporation, ha ido creciendo y creando una masa crítica de residentes, trabajadores, su propio sentido de comunidad y lo más importante, su propia forma de gobierno. Es el único caso en Estados Unidos de ciudad gobernada por asociaciones privadas. Estas asociaciones, representadas por un Consejo de Administración, proveen la mayoría de los servicios públicos a los ciudadanos. En este artículo se muestra lo que llamo «complicidad ciudadana» basada en lo que el Nuevo Servicio Público define como gobierno basado en la comunidad. Ellos no están reinventando ninguna clase de gobierno, lo que están haciendo es crear una nueva forma de gobierno en la que los ciudadanos prefieren tomar el mando que servir. El estudio del caso que muestro nos ayuda a entender cómo una mayor participación de los ciudadanos en las tareas de la administración local puede hacer disminuir visiblemente el poder del promotor en el desarrollo de una Nueva Ciudad. Esta complicidad ciudadana se traduce en términos de implicación de los miembros de la comunidad en el crecimiento y en el Gobierno de la ciudad

  7. Sustainable Agriculture and Climate Change: Producing Potatoes (Solanum tuberosum L. and Bush Beans (Phaseolus vulgaris L. for Improved Food Security and Resilience in a Canadian Subarctic First Nations Community

    Directory of Open Access Journals (Sweden)

    Christine D. Barbeau

    2015-05-01

    Full Text Available Aboriginal people in Canada experience disproportionately high rates of diet-related illnesses, such as obesity and diabetes. Food insecurity has been identified as a contributing factor to these illnesses along with a loss of traditional lifestyle. Current food systems within northern subarctic and arctic regions of Canada rely heavily on imported foods that are expensive (when available, and are environmentally unsustainable. A warming subarctic and arctic climate present challenges, but also offers the opportunity for local agricultural production that can increase food security and promote a more sustainable food system. In this study the feasibility of sustainably growing potatoes (Solanum tuberosum L. utilizing agroforestry practices to enhance food security in remote subarctic communities is explored through a case study in Fort Albany First Nation in northern Ontario, Canada. Potato crops were grown over a two-year period and rotated into plots that had been planted with green bush beans (Phaseolus vulgaris L.. Results showed that potatoes and bush beans could be grown successfully in the subarctic without the use of greenhouses with yields comparable to more conventional high-input agricultural methods. In subarctic Canada, sustainable local food production can help to promote social capital, healthier lifestyles, and food security.

  8. 基于角域的往复压缩机连杆小头瓦故障诊断%Fault Diagnosis of the Small End Bushing of Connecting Rod of Reciprocating Compressor Based on Angular Domain

    Institute of Scientific and Technical Information of China (English)

    杜小元; 江志农

    2012-01-01

    针对往复压缩机在线故障诊断时难以提取连杆小头瓦故障特征的实际情况,提出了一种基于角域分析原理的在线诊断方法,简述了往复压缩机连杆小头瓦无反向角和敲击故障诊断的分析方法,并通过诊断案例证明了角域分析的实用性.%Aiming at the actual situation of difficult to extract fault characteristics of the small end bushing of connecting rod when diagnosing the fault of reciprocating compressor online,a kind of online diagnosing method based on angular domain analysis principle is pointed out.The analysis method of the small end bushing of connecting rod without reverse angle and percussion fault diagnosis is simply specified.The practicality of angular domain is proved based on the diagnosis example.

  9. Mariquita Sánchez : una mujer, una vida, el nacimiento de una nación

    OpenAIRE

    Guidobono, Sandra Olivero

    2012-01-01

    Narrar y analizar la vida de Mariquita Sánchez es escribir la nación : la patria argentina nace al mismo tiempo que Mariquita deja la niñez y hasta podría decirse que mujer y nación llegarán juntas a la madurez. El Río de la Plata, cual nación joven, será narrada por una también joven Mariquita en relatos epistolares, lo que resultará en una casi etnografía de la vida cotidiana en la sociedad decimonónica. La permanente participación de Mariquita Sánchez en los sucesos históricos de la primer...

  10. Masa pélvica tras una artroplastia total de cadera: Una complicación rara del polietileno

    OpenAIRE

    Seral García, Belén; García Pequerul, José Manuel; Castiella Muruzabal, Tomás; Seral Iñigo, Fernando

    1998-01-01

    La osteólisis producida por partículas tras una artroplastia total de cadera (ATC) es un fenómeno bien conocido y documentado. Pero la existencia de una tumoración de partes blandas tras una ATC es un hecho poco frecuente. Nosotros presentamos un caso poco habitual de fracaso del polietileno (PE) tras una artroplastia de cadera no cementada: una masa intrapélvica íntimamente relacionada con el psoasilíaco, al año de implantarle una prótesis no cementada tipo Mont-Blanc. Osteolysis cause by...

  11. Análisis financiero: una herramienta clave para una gestión financiera eficiente

    Directory of Open Access Journals (Sweden)

    Marbelis Alejandra Nava Rosillón

    2009-01-01

    Full Text Available El análisis financiero es fundamental para evaluar la situación y el desempeño económico y financiero real de una empresa, detectar dificultades y aplicar correctivos adecuados para solventarlas. El objetivo de este estudio es analizar la importancia del análisis financiero como herramienta clave para una gestión financiera eficiente. Es un estudio analítico con diseño documental basado en los fundamentos teóricos de Gitman (2003, Van Horne (2003, Elizondo y Altman (2003, entre otros. El análisis financiero se basa en el cálculo de indicadores financieros que expresan la liquidez, solvencia, eficiencia operativa, endeudamiento, rendimiento y rentabilidad de una empresa. Se considera que una empresa con liquidez es solvente pero no siempre una empresa solvente posee liquidez. El análisis financiero basado en cifras ajustadas por inflación proporciona información financiera válida, actual, veraz y precisa. Se concluye que el análisis financiero es una herramienta gerencial y analítica clave en toda actividad empresarial que determina las condiciones financieras en el presente, la gestión de los recursos financieros disponibles y contribuye a predecir el futuro de la empresa.

  12. Calculation of the temperature distribution and thermal stresses in a gas turbine nozzle cooled by air film; Calculo de la distribucion de temperaturas y esfuerzos termicos en una tobera de turbina de gas enfriada por pelicula de aire

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez R, Alejandro; Garcia I, Rafael; Mazur C, Zdislaw [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2004-07-01

    The analysis begins with the generation of a computational geometric model of the gas turbine nozzle using reverse engineering techniques. For the obtaining of the original geometry of the blade, a measurement machine by coordinates and computerized numerical control was used. Next, the computational model is converted into a three-dimensional mesh. In advance, a study of boundary conditions was made of the nozzle material as well as of the turbine operating conditions during non-operating cycles, start-ups and shut-downs. On the other hand, with the boundary conditions imposed to the model, the distributions of the temperature and pressures on the aerofoil profile of the nozzle blade were calculated. These results had to be manipulated to be exported to a finite element software (ANSYS); at this point, another nozzle model was elaborated to be able to import the temperature distribution. With the temperatures correctly imported, the simulations for the calculation of the thermal stresses were made in the nozzle. [Spanish] El analisis inicia con la generacion de un modelo geometrico computacional de la tobera de la turbina de gas utilizando tecnicas de ingenieria inversa. Para la obtencion de la geometria original del alabe, se utilizo una maquina de medicion por coordenadas y control numerico computarizado. A continuacion, el modelo computacional es convertido en una malla tridimensional. Con antelacion, se realizo un estudio de las condiciones de frontera, tanto del material de la tobera como de las condiciones de operacion de la turbina, durante ciclos de paro, arranque y disparo. Por otra parte, con las condiciones de frontera impuestas al modelo, se calcularon las distribuciones de las temperaturas y presiones sobre el perfil aerodinamico de la paleta de la tobera. Estos resultados tuvieron que ser manipulados para ser exportados a un software de elemento finito (ANSYS); en este punto, se elaboro otro modelo de la tobera para poder importar la distribucion de

  13. gestación de una hiperciencia

    Directory of Open Access Journals (Sweden)

    Alejandro Flores Méndez

    2005-01-01

    Full Text Available El hombre, al narrar los eventos que han ocurrido a través de su historia, ha cubierto de misticismo algunos de ellos, debido a que en ocasiones no cuenta con los conocimientos necesarios para explicarlos. Este texto recopila algunos datos referentes a la Odisea asociada a la comunicación entre los seres vivos y/o entre las máquinas, así como los mecanismos de control que influyen en sus relaciones; en otras palabras, hablaré aquí de la considerada nueva hiperciencia llamada Cibernética. Para tal fin, en primer término incluyo dos historias; una primera apoyada en la ficción, seguida por una segunda que en forma somera comenta la vida de los hombres y los eventos históricos que están ligados a la gestación de la Cibernética.

  14. Estrategia organizacional: una propuesta de estudio

    Directory of Open Access Journals (Sweden)

    Ángela Lucía Noguera Hidalgo

    2014-01-01

    Full Text Available El concepto de estrategia en el contexto de las organizaciones empresariales es uno de los temas que genera gran interés en los asuntos del management. Sin embargo, la proposición de nuevos enfoques no ha aportado significativamente al avance en el estudio de este concepto. El estancamiento se hace evidente, razón por la cual el presente documento esboza una propuesta que reúne algunos de los retos para el estudio de la estrategia. En él se presenta una revisión que deja por sentados los posibles caminos a seguir, los cuales contribuyen a la perdurabilidad de las organizaciones.

  15. una película finlandesa

    Directory of Open Access Journals (Sweden)

    Inka Salovaara Moring

    2005-01-01

    Full Text Available La autora analiza un concepto crítico sobre identidad cultural, a través de su propia perspectiva nacional. El artículo propone una construcción de las memorias colectivas de la nación y de la gente, a partir del punto de vista del país de la autora. El texto explora la relación entre dos polos: por un lado, observa cómo se retrató a la nación en forma visual desde la cultura popular, durante una época de recesión económica; por el otro, explora cómo la historia del país se había organizado para servir al propósito de la movilización y de la unidad de la nación en estas nuevas circunstancias.

  16. Software libre: una oportunidad para los investigadores

    OpenAIRE

    Rius Carrasco, Roser; González Alastrué, José Antonio

    2011-01-01

    El mundo del software está viviendo en el último decenio una peculiar revolución que tiene como principal actor el software libre. El fenómeno es de tal magnitud que recientemente Mark Driver, de la acreditada consultora Gartner, predecı´a que, en un par de an˜os, el 80% del software comercial contendrá módulos de software libre1. En el presente número, el artículo de Seoane et al2 hace una apuesta definitiva por el uso de software libre en el a´mbito clínico. No se limita a ello,...

  17. Hacia una nueva Biología

    Directory of Open Access Journals (Sweden)

    Sandín, Máximo

    2002-05-01

    Full Text Available Not available

    «La victoria del darwinismo ha sido tan completa que es un shock darse cuenta de cuan vacía es realmente la visión darwiniana de la vida». Esta rotunda frase no parece significar solamente la manifestación de una opinión personal. Pertenece a un editorial publicado en Nature y fïrmado por Henry Gee, uno de sus comentaristas sobre evolución. El motivo de que una revista científica de las más prestigiosas (que se pueden considerar como las mantenedoras de la ortodoxia, haga suyo ese comentario es que las investigaciones más recientes (especialmente en el campo de la embriogénesis han revelado unos fenómenos que han puesto de manifiesto su absoluta incompatibilidad con la teoría darwinista de la evolución. Las consecuencias de esto son obvias, y las precisa otro editorialista de Nature, Philip Ball, en un comentario sobre la secuenciación del Genoma humano: «Los biólogos van a tener que construir una nueva Biología». Tenemos por delante un duro y largo trabajo científico por realizar, pero también tenemos una tarea previa: depurar la Biología de la, tan arraigada, terminología darwinista, cargada de conceptos y prejuicios deformadores de los fenómenos biológicos.

  18. Swedenborg, Kant, Emerson : una lectura trascendentalista

    OpenAIRE

    Lastra Meliá, Antonio

    2004-01-01

    Este ensayo señala la constitución de un mundo de lectores (Leserwelt) como una de las metáforas o mitos originales de la Ilustración, tal y como ha sido interpretado por los lectores de Kant en América, especialmente por el trascendentalismo de Emerson. La lectura emersoniana de Kant descubre el arte de leer ilustrado a propósito de la lectura de Swedenborg.

  19. Tuberculosis Extremadamente Drogorresistente (XDR: una Amenaza Permanente

    Directory of Open Access Journals (Sweden)

    Virginia Victoria Cortez Romero

    2009-06-01

    Full Text Available La tuberculosis (TB es una enfermedad que afecta al mundo entero, sobretodo a países pobres. Durante mucho tiempoconstituyó la primera causa de muerte por enfermedades infecciosas a nivel mundial, siendo después superada por la pandemiadel VIH/SIDA. Ahora, nuevamente la tuberculosis ha tomado importancia por el surgimiento de cepas multidrogorresistentesen cuyo extremo de letalidad esta la tuberculosis extremadamente drogoresistente (TB XDR.

  20. Una riflessione interdisciplinare sul termine cambiamento

    OpenAIRE

    Giuseppe Licari

    2013-01-01

    Riassunto Il focus che presento propone una riflessione interdisciplinare sul campo semantico del termine cambiamento. Lo scopo è quello di cogliere, attraverso uno sguardo sulla complessità del reale, alcune delle situazioni e alcuni processi dove la parola cambiamento si va a collocare. Come sappiamo il cambiamento lo possiamo ritrovare sia nei processi evolutivi, come in quelli formativi, o in quelli epistemologici, si pensi ad esempio al cambio di paradigma più famoso nella conoscenza uma...

  1. Hacia una antropolog??a del poder

    OpenAIRE

    Sanjurjo Pinto, Javier

    2004-01-01

    Una sarta de nociones y pseudoargumentaciones antiilustradas, antimodernas e incluso anticient??ficas se cuelan constantemente en muchos discursos sociales, tratando de tachar cuando menos de sospechosos de dogmatismo e incluso de manipulaci??n a aquellos estudiosos de lo social que se declaran obstinadamente como "cient??ficos". En la comprensi??n de la conducta social, caer en esta din??mica y no apostar por la racionalidad cient??fica, no tener en cuenta las condiciones materiales y la est...

  2. Anorexia nerviosa: una revisió

    OpenAIRE

    Félix López, Gustavo Alonso; Universidad Veracruzana; Nachón García, María Gabriela; Universidad Veracruzana; Hernández Parra, Tomás Gerardo; Universidad Veracruzana

    2014-01-01

    En este artículo se describen aspectos relacionados con la historia natural de la anorexia nerviosa, una enfermedad que se ha convertido en un serio problema de salud, así como su repercusión social y familiar, haciendo énfasis en la población de riesgo de padecer este síndrome y en los diferentes tratamientos aceptados internacionalmente.

  3. Crisis vital desde una perspectiva de género

    OpenAIRE

    Castro, Eva; Flores López, Olga

    2004-01-01

    A continuación se presenta el caso de una mujer de 55 años que presenta una crisis de identidad, abordado desde una perspectiva de género y un modelo explicativo y terapéutico que incluye elementos del análisis transaccional y la terapia constructivista.

  4. Escuelas, directivos y maestros en conflicto una perspectiva organizacional

    Directory of Open Access Journals (Sweden)

    2001-01-01

    Full Text Available Búsqueda de respuestas alternativas en los conflictos escolares, en donde hay que realizar una detección de los problemas, una percepción ambiental y una aplicación de esquemas para encontrar soluciones.

  5. Proyecto de una empresa periodística: "11 Culturas"

    OpenAIRE

    Ramírez Ocaña, Cristian; Nieto Priego, María Dolores; Sánchez González, Mª Carmen; Morilla Cañete, Mª Victoria

    2015-01-01

    El proyecto es una propuesta de creación de una empresa periodística, concretamente una Sociedad Limitada que recibe el nombre de 11 Culturas y es un medio de comunicación especializado en cultura malagueña.

  6. UNITIERRA: Una Universidad de los Movimientos Sociales

    Directory of Open Access Journals (Sweden)

    Figueredo Benzaquen, Júlia

    2014-08-01

    Full Text Available La pregunta que tratamos de responder en este artículo es si la Universidad de la Tierra (Unitierra en Chiapas – México, es un espacio de educación no formal decolonial y de emergencia emancipadora. Una experiencia decolonial y emancipadora es la que reacciona a la colonialidad vigente y constituye utopías realistas. Dentro de la educación esto significa apostar en "otra educación". La Unitierra constituye una comunidad educativa que busca la resistencia y transformación social. La Unitierra está vinculada con la lucha del Movimiento Zapatista. Para reflexionar sobre esta experiencia, hemos adoptado como técnicas de elección como colección de datos la observación participante y entrevistas semi-estructuradas. El análisis se realizó a partir de la descripción interpretativa del contexto, de la historia y de la estructura de funcionamiento de la iniciativa. Se concluye que la Unitierra se configura como una experiencia decolonial y emancipadora, a partir de las prácticas, saberes y agentes que apoyan a esta idea.

  7. Verso una visione soprannaturale della follia

    Directory of Open Access Journals (Sweden)

    Mabel Franzone

    2006-12-01

    Full Text Available A partire dalla difficile nozione di “follia”, è necessario dirigersi verso l’esclusione di cui questa malattia si è fatta oggetto nel sistema occidentale moderno. Un’ulteriore argomentazione della malattia mentale si è fatta largo grazie a pensatori contemporanei, la rinascita di altre cosmovisioni e di vecchie filosofie. In tal modo i deliri mistici, paranoici, schizofrenici possono essere studiati da un lato come rotture di limiti, dall'altro come una messa in relazione del corpo con lo spirito. Tra i due, il linguaggio opera una caratteristica d'unione, linguaggio che, nei pazienti, indica una creatività, la poesia. Se questa poesia permette un'uscita, un'esplosione dei limiti dalla realtà verso regioni sconosciute, forse si può vedere la follia come uno squilibrio rispetto al mondo, all'universo stesso, squilibrio che può essere trattato responsabilizzando l'uomo, pensandolo, mettendolo in dubbio. Da questo punto di vista, la pazzia ri-sorge come qualcosa di positivo, come uno dei temi che ci rimetterà di fronte al mondo, ponendo alla nostra portata altre ontologie.

  8. Christine Angot: una hetero-homosexual incestuosa

    Directory of Open Access Journals (Sweden)

    María José Palma Borrego

    2008-01-01

    Full Text Available El proyecto literario de Christine Angot en L’inceste (1999 es el de desvelar no su historia incestuosa –ella misma afirma que su libro no es una autobiografía– sino el hacer visible lo más reprimido, lo más oculto y a la vez lo más originario de nuestra Cultura: el incesto con la madre. Un incesto que puede ser real o imaginario, y que el trabajo de escritura desvela y configura sus territorios que van desde la fusión con la madre, característica de toda situación preedípica, hasta una relación homosexual real con su doble narcisista, pasando por el deseo incestuoso por su hija. Mundo sin castración en donde todo puede ser posible, en ese juego de “ser” y “no-ser”, y en donde la temática del incesto está representada en el texto por una espacialidad vertical, de arriba abajo, generacional, madre/hija-Christine-Léonore, y horizontal, Christine-Marie Christine.

  9. Una imatge val per mil paraules

    Directory of Open Access Journals (Sweden)

    Jaume Cabré

    1999-11-01

    Full Text Available Una vegada hi havia un videoclub ple de pel·lícules i a l'entrada hi havia un rètol lluminós molt bonic que deia el lema d'aquesta casa, que és una imatge val per mil paraules. I vet aquí un dia que la clientela ja se n'havia anat, però encara no havien tancat els llums, van entrar al videoclub dues rates, l'Amàlia i l'Amèlia. I van dir: "Què fem avui?" Aleshores l'Amèlia se'n va anar de seguida cap al racó de la sèrie B i va agafar una pel·lícula poc coneguda, mentre que l'Amàlia va agafar Mort a Venècia. Llavors la va començar a rosegar i l'Amèlia li va dir: "Què, què te'n sembla?", i l'Amàlia li va contestar: "Mmm... Em va agradar més la novel·la."

  10. Una strategia semplice per la GPS Seismology e i sistemi di early warning per gli tsunami denominata VADASE

    Directory of Open Access Journals (Sweden)

    Mattia Crespi

    2011-04-01

    Full Text Available I recenti avvenimenti legati al fortissimo terremoto avvenuto in Giappone lo scorso 11 marzo 2011 e al tragico e devastante tsunami ad esso conseguente hanno, una volta di più, posto all'attenzione della comunità internazionale la necessità di disporre sistemi di early warning per gli tsunami sempre più efficienti. I sistemi GNSS, se utilizzati in modo adeguato, possono dare un grande contributo come nel caso della tecnica VADASE qui esposta.Co-seismic Displacement Estimation. Improving Tsunami Early Warning SystemsThe great earthquake (M=9.0 which hit the Island of Honshu (Japan on March 11, 2011 and generated a tremendous tsunami raised once more the attention towards tsunami early warning systems.In this respect, during the last years, several studies demonstrated that GPS can be used effectively for estimating coseismic displacement waveforms (so called GPS seismol-ogy, with accuracies ranging from a few millimeters to a few centimeters. These stud-ies were mainly developed off-line, re-analysing the GPS data acquired during strong earthquakes and well known processing strategies (Precise Point Positioning and In-dependent Positioning were developed to lower the latency between the earthquake occurrence and the coseismic displacement waveforms estimation as much as possible. In this regard, during the Real Time GPS Science Requirements Workshop held in Sep-tember 2007 in Leavenworth (Washington, USA the goal of achieving 1 cm real-time GNSS displacement accuracies in the global reference frame within 3 minutes following an earthquake was adopted.It is in this frame that here we present a novel approach named VADASE, with which we are able to estimate accurate co-seismic displacement waveforms in real-time, just using the standard broadcast products (orbits and clocks and the high-rate (1Hz or more carrier phase observations continuously collected by a GPS receiver. Since no other data than those routinely collected by a

  11. Condiciones de posibilidad para una justicia global

    Directory of Open Access Journals (Sweden)

    Pereira, Gustavo

    2004-06-01

    Full Text Available Recognition, as a constitutive part of subjectivity, is a basic need for people as well as for States. The terms of international relationships imposed by a great number of international credit and commerce institutions contradict and undermine such recognition, by means of policies that result in segregation and poverty in the poorest countries. Breaking such logic seems to be the way to enable the existence of conditions of global justice based on terms of reciprocal recognition. A prudential argument is the first step in this process; mid and long-term benefit would be the only rational motivation for international institutions to enable such an openness that would ensure reciprocal recognition. However, this argument is not sufficient, and the objective of a radical inclusion affecting all regions of the planet requires a moral argument based on the idea of equal dignity, inherent to every person. Global justice and its counterpart, local justice, will only be possible through the combination of these two arguments, which would make the existence of a logic of reciprocal recognition possible, thus enabling justice.

    El reconocimiento, en tanto que constitutivo de la subjetividad, es una necesidad básica tanto de las personas como de los Estados. Los términos de relación internacional impuestos por buena parte de los organismos internacionales de crédito y comercio niegan y socavan este reconocimiento a través de políticas que generan exclusión y pobreza en los países más pobres. La ruptura de esta lógica se presenta como un camino que posibilita el surgimiento de condiciones de justicia global basadas en términos de reconocimiento recíproco. Un argumento prudencial oficia como primer paso en este proceso, el beneficio a medio y largo plazo sería la motivación racional para que los organismos internacionales generasen una apertura que permitiese asegurar el reconocimiento recíproco. Sin embargo, este argumento no es

  12. Application of Detection Technology of SF6 Decomposition Products to Fault Diagnoses of HVDC Bushings%SF6分解物检测在高压直流套管故障诊断中的应用

    Institute of Scientific and Technical Information of China (English)

    许杨; 李锋锋; 刘颀; 郝跃东; 欧阳震

    2013-01-01

    Detection technology of SF6 decomposition products is an important method of electrical power equipment condition assessment and fault diagnosis along with wide usages of gas-insulated devices in power grids.However,most researches have been focused on GISs (Gas Insulated Switchgears),with a rare study on gas insulated wall-bushings and bushings at the valve-sides of converter-transfomers.According to SF6 decomposition mechanism and detection technology and based on data of SF6 decomposition products obtained from bushings in converter stations,regular patterns of SF6 decomposition and its products are analysed.By two field examples,a suggestion is given that abnormal data of SF6 decomposition shuold be systematically analysed by a comprehensive method with laboratory tests,electrical tests,electrical-ultrasonic wave detection and historical analyses.Eventually deficiencies of SF6 decomposition-product detections are discussed.%随着气体绝缘设备在电力系统中的广泛应用,SF6分解物检测成为电力设备状态评估与故障诊断的有效方法.然而目前的研究大都集中于GIS(气体绝缘开关装置),在换流站直流穿墙套管和换流变压器阀侧套管方面少有研究.为此,在介绍SF6气体分解机理和分解物检测技术的基础上,并依据套管分解物检测结果,分析换流站套管SF6分解物的组分含量及其生成规律.通过2个现场检测套管SF6分解物异常实例,说明生产现场开展SF6分解物检测时,应综合实验室检测、电-声-气联合检测及电气试验等手段,并结合历史数据与资料,对异常检测结果进行系统化分析.最后,讨论了SF6分解物检测技术目前存在的主要问题.

  13. Hacia una Psicología Social Comunitaria del Sur

    OpenAIRE

    German Rozas

    2015-01-01

    Este artículo tiene como objetivo proponer algunos caminos hacia un ámbito que hemos llamado simbólicamente una “Psicología Social Comunitaria del Sur”, es decir una disciplina que deje atrás los planteamientos venidos desde los países desarrollados, dado que alojan principalmente una mirada eurocéntrica. La referencia del Sur, es una propuesta metafórica, que no tiene un asidero geográfico, sino que apela a un otro, los del Sur, que significan la relación entre países de una manera diferente...

  14. Síntesis de hidrocarburos por acoplamiento oxidativo de metano. Utilización de reactores de membrana

    OpenAIRE

    Coronas Ceresuela, Joaquín; Santamaría Ramiro, J. M.; Menéndez Sastre, Miguel Alejandro

    2008-01-01

    El uso de tecnicas sol-gel y de tecnicas de impregnacion ha conducido al desarrollo, mediante la modificacion de tubos de alumina, de una membrana ceramica apta para la reaccion de acoplacimiento oxidativo de metano (A.O.M.). Para medir esta actividad se realizaron experimentos en blanco. A partir de una extensa revision bibliografica se seleccionaron tres grupos de catalizadores, cuyos resultados correspondian a los mejores obtenidos en otros laboratorios usando reactores convencionales de l...

  15. Propuesta de una Programación de Psicomotricidad desde una perspectiva global.

    OpenAIRE

    Galán-Pérez, Laura

    2012-01-01

    El presente trabajo se enmarca dentro de lo que es la Psicomotricidad, y de cómo planificarla y ponerla en práctica con niños de 5 - 6 años. Ha sido estructurado en dos partes, una teórica y otra práctica. En primer lugar una introducción acerca de la Psicomotricidad, los aspectos más importantes a trabajar y cómo hacerlo, siempre desde una visión global, partiendo de diferentes autores. La parte práctica consta de cuatro Unidades Didácticas a poner en acción dentro del aula de niños de P5...

  16. Rotor optimization of a Francis type hydraulic turbine through the computer flow analysis (CFD); Optimizacion del rodete de una turbina hidraulica tipo Francis a traves del analisis computacional del flujo (CFD)

    Energy Technology Data Exchange (ETDEWEB)

    Rosado Tamariz, Erick

    2007-06-15

    basicas para el analisis de flujo y el proceso de optimizacion en las turbinas, los cuales consisten en: modelado de flujo a traves de toda la turbina (conjunto), o bien el modelado de cada componente por separado, obteniendo resultados satisfactorios por ambas metodologias. En la mayoria de los casos implementando el metodo de volumen finito (MVF), con consideraciones de flujo no viscoso, con la implementacion de los modelos de dos ecuaciones para la solucion de las ecuaciones que rigen el flujo turbulento. Asi mismo, se utilizan tecnicas de optimizacion que se basan en la parametrizacion geometrica, el planteamiento de una funcion objetivo y en la disminucion del fenomeno de cavitacion. En el presente trabajo se presenta la optimizacion de un rodete de una turbina hidraulica tipo Francis modelo, considerando tres condiciones de carga (75%, 85% y 100%) a traves de la dinamica de fluidos computacionales (CFD) como parte de un analisis hidraulico para la modernizacion de una unidad de generacion de potencia. Se realiza la optimizacion del rodete de una turbina tipo Francis, mediante un analisis previo de CFD mediante el MVF, considerando los efectos viscosos del fluido y el modelo de turbulencia Sparlat-Allmaras; modelando el distribuidor y el rodete por separado. Posteriormente se realiza la generacion de un modelo parametrico del rodete y se configura la simulacion para la generacion de la base de datos. Finalmente se plantea una funcion objetivo para con ello obtener la geometria optima de los alabes del rodete. Los resultados se presentan en forma grafica donde se muestra la distribucion de presiones del rodete original y el rodete optimizado; de igual forma, se comparan las formas geometricas y los resultados globales de desempeno (potencia y rendimiento) de ambos rodetes.

  17. ¿El concepto de territorio una totalidad o una idea a partir de lo multicultural?

    OpenAIRE

    Bustos Velazco, Edier Hernan; Molina Andrade, Adela

    2012-01-01

    Durante el rastreo al documento, el lector encontrara diferentes posturas relacionadas con la representación de territorio, pretendiendo mostrar una idea no totalizadora, así como su importancia en la formación de profesionales. Lo anterior invita a reflexionar en términos de Derrida, en la idea de una ¨universidad que constituye el lugar por excelencia en el que se ha de garantizar y ejercer la libertad incondicional de palabra y de cuestionamiento: el derecho a decir todo¨ en tal sentido es...

  18. Ciudades para un futuro más sostenible (una ciudad sostenible / una ciudad saludable)

    OpenAIRE

    Verdaguer Viana-Cárdenas, Carlos

    2008-01-01

    Una ciudad saludable/ una ciudad sostenible En un planeta fundamentalmente urbano, las ciudades constituyen un elemento fundamental de intervención de cara a cualquier transformación global hacia la sostenibilidad. En las dos últimas décadas, se han multiplicado las reflexiones destinadas a dilucidar cuáles son las condiciones para la sostenibilidad en el ámbito urbano. Formulados sucintamente y sin ánimo exhaustivo, los criterios básicos de sostenibilidad urbana que suscitan un mayor grad...

  19. Adaptación domótica de una vivienda para una persona con discapacidad

    OpenAIRE

    Sánchez Bermúdez, Francisca

    2015-01-01

    Este proyecto plantea la necesidad de adaptar viviendas para personas con discapacidad con el objetivo de que se garantice el confort y la accesibilidad, no solo del discapacitado, sinó de todas las personas integrantes en ese hogar. En concreto, está focalizado en un caso real de una niña de 3 años que vive con sus padres. Se contempla a partir de un sistema económico y sencillo para que las personas usuarias del mismo, puedan tener garantizado a largo plazo una me...

  20. Desarrollo de una diana real para el guiado de una tuneladora

    OpenAIRE

    Portero Hernández, Rafael

    2009-01-01

    Este Proyecto Fin de Carrera titulado “Desarrollo de Prototipo de Diana para el Guiado de una Tuneladora” implica el diseño y construcción de un modelo de diana que permita mejorar en alcance, precisión y tiempo los actuales modelos disponibles para el control y cálculo de la trayectoria de una máquina tuneladora durante el proceso de perforación. Esta diana dispone de dos paneles, uno translúcido y otro opaco, diseñados para permitir la incidencia de un haz de láser. Para mejorar el sistema,...

  1. Simulación virtual de una transpaleta y una apliladora eléctrica

    OpenAIRE

    Rodríguez Barreiro, Sergio

    2010-01-01

    El objetivo principal de este proyecto es el modelado y simulación de una apiladora y una transpaleta mediante las técnicas que ofrecen el Diseño Asistido por Computador (CAD) y la realidad virtual. Sobre dicho modelo puede interactuarse de forma que se pueda observar y entender su funcionamiento. La simulación virtual se consigue mediante el lenguaje de programación VRML (Virtual Reality Modeling Language), que permite la creación de mundos virtuales en tres dimensiones, de tal manera que el...

  2. El lenguaje corporal, una práctica : Enfoque desde una educación corporal

    OpenAIRE

    Galarza, Juliana Mariela

    2013-01-01

    En esta oportunidad la intención es presentar el estado de la cuestión con respecto a la investigación de Licenciatura en Educación Física en curso y se titula “El Lenguaje Corporal: una Práctica. Enfoque desde una Educación Corporal”. Cuestiones como el cuerpo, el movimiento, la enseñanza, el aprendizaje, son conceptos de uso frecuente donde se trata de poner en tensión distintos significados. Cada concepto se desprende para buscar unanimidad en el mejor ejercicio profesional. Llegar a de...

  3. La alfabetización funcional en una segunda lengua : una experiencia metodológica

    OpenAIRE

    Llorente Puerta, María Jesús

    2015-01-01

    Ante la realidad de un alumnado extranjero que carece de habilidades lectoescritoras y la necesidad de dotar a este alumnado de competencia comunicativa escrita, se plantea, en la primera parte del trabajo, una revisión de las características más significativas de la actividad específica de alfabetización en una Segunda Lengua y el contexto concreto en que se desarrolla la actividad con especial foco en aspectos relacionados con las diferentes esferas de la motivación y las características i...

  4. LA LINGUA PER STUDIARE: UNA RASSEGNA BIBLIOGRAFICA

    Directory of Open Access Journals (Sweden)

    Marina Tassara

    2011-02-01

    Full Text Available I libri di testo adottati nelle scuole contengono parole sconosciute e costruzioni sintattiche e testuali complesse che rappresentano dei veri e propri “muri linguistici” per gli alunni stranieri che non possiedono una buona conoscenza della lingua italiana. Ciò facilmente determina un divario di competenze tra l’apprendente straniero e i suoi compagni e ritardi scolastici molto spesso incolmabili con conseguente perdita di motivazione e di autostima, senso di frustrazione e isolamento che a volte sfocia in un disagio psico-sociale. Tra gli strumenti adottati dalla scuola italiana per far fronte a questo problema vi sono i testi disciplinari ad alta comprensibilità che, pur mantenendo la maggior parte delle informazioni, le veicolano in una forma più semplice dal punto di vista linguistico. L’articolo fornisce una bibliografia di manuali ad alta comprensibilità il più possibile aggiornata suddivisa per ordine e grado di scuola e per materia scolastica, con l’intento di fornire agli insegnanti un aiuto nella scelta e nel reperimento dei testi.     Language for study:  a bibliography   Textbooks used in schools contain unknown words and complex sentence constructions that create real “linguistic barriers” for foreign students who do not know Italian well.  This creates an abyss between the competence of the foreign learner and his or her classmates and unsuccessful school performance which is often not made up for and leads to a loss of self-esteem, frustration, isolation, and ultimately to psycho-social malaise.  Among the tools utilized in the Italian school system to address this problem are highly comprehensible textbooks which, while containing most of the information, express the content in simpler language.  This article offers an up-dated bibliography of textbooks which are easily understandable, divided according to order and grade of school, for teachers to use in choosing the textbooks for their classes.

  5. Aprender a innovar: una experiencia on line

    Directory of Open Access Journals (Sweden)

    Joaquín MORENO MARCHAL

    2014-11-01

    Full Text Available La creatividad y la innovación se han convertido en recursos clave en la denominada sociedad del conocimiento, que bien podría ser también llamada sociedad de la innovación. Pero innovar es una actividad compleja, que integra la aplicación de múltiples capacidades, el pensamiento divergente y convergente, la gestión de equipos humanos, la comunicación. Ahora bien, a innovar se puede, y se debe, aprender. Aprender a innovar es un reto y también una obligación para el conjunto del sistema educativo en todos sus niveles. Partiendo de estas consideraciones este trabajo expone una experiencia de aprendizaje de la creatividad y de la innovación a través de un curso totalmente on line basado en la plataforma MOODLE, en el marco del Programa de Formación Permanente de la Universidad de Cádiz. Se presenta un modelo del proceso de innovación, denominado CREALAB, de elaboración propia. Este modelo se ha utilizado como base del proceso de aprendizaje de la creatividad y de la innovación y en el diseño del curso, está organizado en torno a actividades y tiene un carácter iterativo y realimentado. Se presentan además el conjunto del diseño metodológico y los resultados obtenidos en las dos ediciones celebradas hasta el momento. El diseño del curso totalmente on line y los resultados alcanzados permiten estimar un alto potencial de aplicación, tanto a nivel personal como a nivel organizacional.

  6. Una lectura diferente del empoderamiento: la racionalidad

    OpenAIRE

    Castaño Duque, Germán Albeiro

    1999-01-01

    El empoderamiento no significa que un empleado tiene todo el derecho sobre una decisión particular; un empleado empoderado puede tener derechos implícitos para iniciar e implementar decisiones, pero el rol del gerente está en la ratificación y monitoreo de la decisión, así pues, el conflicto sobre el empoderamiento está en los derechos sobre si la decisión se delega al empleado o si la delegación es total y para qué tipo de tareas (estratégicas u operativas). Las tendencias administrativas...

  7. IEOH MING PEI: UNA IDEA, TRES VARIACIONES

    Directory of Open Access Journals (Sweden)

    Alberto Donaire Rodríguez

    2010-05-01

    Full Text Available RESUMEN El texto siguiente es un resumen de mi lección de despedida, el 18 de noviembre de 2006, al jubilarme en la Escuela de Arquitectura de Sevilla. Como no se grabó y nunca llevo escritas mis clases, ésta es una reconstrucción basada en mi guión y en las notas tomadas por algunos asistentes, a los que agradezco su interés.Por vez primera se celebraba en la Escuela un acto de esta naturaleza, por iniciativa del entonces Director, Jaime Navarro Casas. A él agradezco su presencia y sus palabras, e igualmente a Juan Luis Trillo de Leyva, que hizo una especie de recorrido sentimental de mi paso por la Escuela, que escuché con emoción. En el mismo curso dieron luego su lección de despedida dos profesores que han dejado en nosotros honda huella, Rafael Manzano y José Luis Manzanares. Estos actos son un bello colofón de una carrera académica.La clase fue una reflexión sobre la arquitectura, al hilo del comentario de tres obras del arquitecto Ieoh Ming Pei en tres ciudades diferentes: las ampliaciones de la National Gallery de Washington, del Museo del Louvre de París y del Deutsches Historisches Museum de Berlín.SUMMARY The following text is a summary of my valedictory lecture, on 18 November 2006, on my retirement from the School of Architecture of Seville. As it was not recorded, and my never having written up my classes, this is a reconstruction based on my outline and the notes taken by some of those present, whom I thank for their interest.This was the first time an act of this nature was held in the School, on the initiative of the then Director, Jaime Navarro Casas. I thank him for his presence and his words, and also Juan Luis Trillo de Leyva, who made a sort of sentimental journey of my time at the School, to which I listened with emotion. Later, valedictory lectures were given by two teachers who have left a profound imprint on us, Rafael Manzano and José Luis Manzanares. These acts are a beautiful conclusion to an

  8. Marketing Experiencial: Una nueva tendencia del marketing

    OpenAIRE

    Magro Magdalena, Lara

    2013-01-01

    El reciente desarrollo de las tecnologías y su cada vez mayor implicación en la vida diaria de las personas, ha permitido en el mundo del marketing, la creación de nuevos modelos de negocio y promociones que buscan cautivar, interesar y sorprender, siempre de forma innovadora y distintiva a los usuarios finales. Durante todo el trabajo presentado a continuación, se va a explicar una nueva forma de marketing que está creando moda entre las firmas más prestigiosas, como pueden ser A...

  9. Factores de movilidad de una comunidad internacionalizada

    OpenAIRE

    Etienne Gérard; Estela Maldonado

    2009-01-01

    La internacionalización de los conocimientos, la movilidad estudiantil y académica constituyen hoy en día elementos estratégicos para el desarrollo de las actividades de transmisión, generación y aplicación del conocimiento, principalmente en las instituciones de educación superior. Este fenómeno de movilidad del conocimiento motivó la realización de una investigación -cualitativa y cuantitativa- para conocer los "polos de formación" y los factores de movilidad de los profesores-investigad...

  10. Una mirada a las singularidades juveniles

    OpenAIRE

    Alejandro Valderrama Herrera

    2009-01-01

    Desde la mitad del siglo XX aparecen profundas transformaciones sociales, materiales y políticas que alteran el paisaje: estamos presenciando un quiebre, una discontinuidad, circunstancias totalmente diferentes; es innegable que la revolu- ción tecnológica está produciendo transformaciones profundas y mutaciones socioculturales que están afectando directamente a las ‘comunidades’; pero lo más importante en todo este contexto es la irrupción, por todas partes, de la diferencia ...

  11. ¿Existe una personalidad jaquecosa?.

    OpenAIRE

    Ramo, C.; E García Albea; I. Posada; A Rodríguez-Antigüedad; Félix Bermejo

    1985-01-01

    Se revisa brevemente el concepto actual de jaqueca y se analiza detalladamente la literatura existente sobre la personalidad jaquecosa. El concepto de personalidad jaquecosa fue mantenido por clínicos y autores de orientación psicoanalítica en las décadas de 1930-1950. los estudios recientes efectuados con criterios epidemiológicos (no basados en estudios hospitalarios) y realizados, empleando tests psicológicos estandarizados no son concordantes con la existencia de una personalidad jaquecos...

  12. Una arquitectura unificada para el razonamiento borroso

    OpenAIRE

    Rafael Bello Pérez; Carlos Morell Pérez

    2011-01-01

    Se presenta una arquitectura para desarrollar de forma unificada tanto el razonamiento basado en reglas como el basado en casos considerando rasgos borrosos. El modelo permite usar varios de los procedimientos desarrollados para el razonamiento borroso basado en reglas en el razonamiento borroso basado en casos. Además, se proponen varias funciones de semejanza y funciones de comparación de rasgos para realizar la recuperación de casos con rasgos borrosos. Se muestra la aplicación del modelo ...

  13. Microtornillos: Una revisión

    OpenAIRE

    P. Gutiérrez Labaye; R. Hernández Villena; M.A. Perea García; N. Escudero Castaño; A. Bascones Martínez

    2014-01-01

    Los microtornillos son un tipo de implante alveolar que proporcionan un método excelente de anclaje. Por su parte, los microtornillos son un elemento económico, fácil de colocar y retirar. Se realiza una revisión del procedimiento quirúrgico y de su utilización clínica y se analizan las ventajas, los inconvenientes y las posibles complicaciones. Se llega a la conclusión de que el procedimiento de inserción de los microtornillos es tan sencillo, que permite su utilización incluso en situacione...

  14. Plan de Empresa de una Granja Escuela

    OpenAIRE

    CORDERO ROMAGUERA, CARLOS

    2016-01-01

    [ES] El trabajo supone la redacción de un plan de empresa para la creación de una granja escuela, que incluirá la selección de la ubicación de la granja escuela y el diseño completo del proyecto, al igual que el estudio de la estrategia a desarrollar y el análisis de su factibilidad. Se analizará su viabilidad para saber los recursos necesarios con los que se ha de dotar la empresa.

  15. Cuento: La historia de una mancha

    OpenAIRE

    López Álvarez, José Manuel; Gómez Díaz, Mª José; López Sancho, J.M.; Refolio Refolio, María del Carmen; Moreno Gómez, Esteban; Cejudo Rodríguez, Salomé; Martínez de Andrés, Alejandro

    2009-01-01

    PDF de 16 páginas con texto e ilustraciones a color. Se trata de un cuento para que los los niños descubran el mundo de las moléculas de una forma sencilla. MATERIAL DIDÁCTICO ELABORADO POR EL CSIC Y LA FBBVA EN LA ESCUELA. Ilustraciones: Alejandro Martínez de Andrés. Versión en película de dibujos animados en: http://www.kids.csic.es/cuentos/cuento3.html

  16. Salud y enfermedad, una realidad compleja

    OpenAIRE

    Mayán Cervantes

    2011-01-01

    Este artículo propone considerar que los aspectos de la vida humana, como el cuerpo, la alimentación, la salud, la enfermedad, la emoción y su simbolismo, que han sido tratados por la ciencia antropológica por separado, desarticulándolos y aislándolos de su contexto, forman en la realidad un sistema integrado cuyos elementos son inseparables. Una dinámica permanente los interrelaciona en un contexto bio-socio-cultural. Se observa que en las sociedades primigenias de varias partes del mundo, i...

  17. Historia de una restitución

    OpenAIRE

    Ametrano, Silvia Juana

    2010-01-01

    El 10 de junio el Museo de La Plata realizó la restitución de los restos de una niña, conocida como Damiana, nacida en Paraguay, y el cráneo de otro individuo, ambos de origen Aché. En la ceremonia estuvieron presentes dos representantes de esa comunidad, el coordinador de la Federación Nativa Aché del Paraguay (Fenap), Emiliano Mbejyvagi, y el presidente de la Liga Nativa por la Autonomía, Justicia y Ética (Linaje), Ismael Tayjangi. La concurrencia que participó de este trascendental momento...

  18. El ideal, una mirada del sujeto excombatiente

    OpenAIRE

    CASTRO PINZÓN, EDUARDO

    2016-01-01

    L'actual conflicte armat intern a Colòmbia, presenta una especial singularitat; es desenvolupa dins d'un Estat de dret, sota un règim de democràcia i en la qual els nivells de creixement econòmic no es semblen veure afectats. En aquest context sorgeix l'any 2002, el desmantellament i la desarticulació d'algunes Organitzacions Armades Il·legals, donant inici a un ambiciós programa de Desarmament, Desmobilització i Reintegració (DDR); passant a la vida civil al voltant d'uns 50.000 combatents. ...

  19. Una perspectiva internacional de la contabilidad

    OpenAIRE

    Martha Lucia Suarez Suarez

    2005-01-01

    En la medida en que la internacionalización empresarial ha ido intensificándose y va surgiendo un nuevo usuario de la información internacional, la problemática ha ido pasando tanto al ámbito académico como al profesional. Consciente de esta realidad, la Facultad de Contaduría Pública de la Universidad de La Salle ha ido reformando el plan de estudios, e incorporando a los profesores a una visión internacional de la profesión, para atender la demanda formativa en este campo de la Contaduría P...

  20. México: una izquierda mercurial

    OpenAIRE

    Raphael, Ricardo

    2006-01-01

    Este artículo explora la naturaleza de la actual izquierda en México, a la luz de la revisión de algimos de los cambios que han operado en las identidades de las diversas formaciones que se reconocen como parte de dicha corriente política. El autor se propone resaltar tanto las consistencias como las contradicciones de una corriente política que no ha logrado decidir con claridad entre la democracia y la revolución.

  1. Disquisiciones de una mariposa sin alas

    OpenAIRE

    Fraile Bravo, Mercedes

    2008-01-01

    Introducción. El protagonismo adquirido por los Cuidados se ha puesto de manifiesto rotundamente incluso en situaciones tan contundente como la invisibilidad de las mujeres. La atribución de roles tópicamente femeninos, frente a los papeles de oposición de control, fuerza actividad y dominio atribuidos al género masculino, refuerzan este hecho. El Objetivo de este trabajo es poner de manifiesto como la Competencia Cultural que propone una serie de intervenciones que...

  2. Sistema de comunicaciones para una planta fotovoltaica

    OpenAIRE

    Martín Aragón, José Manuel

    2012-01-01

    Las plantas solares fotovoltaicas, que son cada vez más habituales en nuestra sociedad, necesitan contar con un sistema de comunicaciones que permita la monitorización continua del funcionamiento de los diferentes equipos así como el control remoto de los mismos y la regulación de la producción. En este Proyecto se ha estudiado la estructura eléctrica y constructiva de una planta fotovoltaica genérica, prestando especial atención a los requerimientos que debe reunir el sistema de comunicac...

  3. Una nueva saponina de Ilex argentina

    OpenAIRE

    Schenkel, Eloir Paulo; Athayde, Margareth L.; Gustavo C. Giberti; Guillaume, Dominique

    1995-01-01

    Ilex argentina Lillo es una de las especies que ha sido mencionada como substituto de la yerba mate verdadera (Ilex yaraguariensis St. Hil.). La principal saponina de las hojas fue aislada y su estructura química elucidada a través de métodos espectroscópicos como el éster 28-β-D-glucopiranósido del ácido 3-O-α-L-arabinopiranosil-20(S)-19α, 24-dihidroxiursólico.

  4. Valores y preferencias televisivas: una experiencia universitaria

    OpenAIRE

    Palacios Navarro, Santiago; Medrano Samaniego, Concepción; Cortes Pascual, Alejandra

    2005-01-01

    El trabajo que se presenta forma parte, por un lado, de una investigación más amplia donde se ha recogido información sobre distintas variables: conocimientos previos, hábitos de estudio, estrategias motivacionales, estilos de aprendizaje, estilos de pensamiento, juicio moral, razonamiento personal, autoconcepto, madurez (adultez), valores y razonamiento lógico. Por otro lado, este trabajo es uno de los primeros pasos del proyecto de investigación en torno a la siempre problemática r...

  5. Matemática, una actividad humana

    OpenAIRE

    Suhit, Gloria; Viazzi, Vilma

    2004-01-01

    Año tras año constatamos que los alumnos aspirantes a ingresar - tanto a la Universidad Nacional del Sur como a la Facultad Regional Bahía Blanca, UTN - se enfrentan con distintos obstáculos asociados con los objetos básicos del cálculo, los que se reiteran en forma sistemática. Desde nuestra experiencia creemos que algunas posibles causas que obstaculizan el aprendizaje y muy especialmente el de los contenidos matemáticos las podemos relacionar con una educación matemática basada durante muc...

  6. Hacia unas matemáticas populares

    OpenAIRE

    Alsina, Claudi

    1989-01-01

    Popularizar las matemáticas es ofrecer nuevas vías de comunicación entre esta bella, pero a veces impopular ciencia, y la sociedad en todos sus niveles. Usar las posibilidades de la prensa, radio, T.V. , video, exposiciones, museos, publicaciones, concursos, etc. para una mejor comprensión y uso escolar y social de las Matemáticas es un tema de actualidad y en él se han centrado las discusiones e intercambio de experiencias que, finalmente, se han plasmado en este documento de reflexiones y pr...

  7. Discursos ceremoniales tzotziles: una joya poco estudiada

    Directory of Open Access Journals (Sweden)

    Ulrich Köhler

    2009-01-01

    Full Text Available Aparte del intercambio verbal en la vida diaria y oraciones cantadas a los dioses, existe otra forma principal de expresión verbal entre los tzotziles, y probablemente entre la mayoría de los pueblos mayas: los discursos ceremoniales. Con las oraciones tienen en común una forma estricta poética, pero no son cantadas. Se pueden distinguir discursos ceremoniales privados y oficiales, los últimos son principalmente juramentos para instalar nuevas autoridades e intercambios verbales entre diferentes oficiantes que organizan una fiesta religiosa. De estos últimos se presentarán algunos ejemplos, tocando tanto su contenido como su forma de expresión poética con muchas metáforas.Apart from verbal interchange in daily life and prayers directed to the gods there is another principal form of verbal expression among the Tzotzil -and probably among the majority of Maya peoples: ceremonial discourses. With the prayers they have in common a strict poetic form, but in contrast to them they are not sung. There exist both private and official ceremonial discourses. The latter are principally blessings for incoming new cargoholders and verbal exchange between different officials who organize a religious feast. Of these official discourses several examples are presented, showing both their content and their poetic form of expression with many metaphors.

  8. Esofagitis necrotizante aguda: Una entidad inusual

    Directory of Open Access Journals (Sweden)

    Silvana E. Pramparo

    2010-12-01

    Full Text Available La esofagitis necrotizante aguda (ENA, también denominada esófago negro, es una rara enfermedad poco descripta en la literatura médica. Describimos el caso de un hombre de 80 años, con hemorragia digestiva alta quien desarrolló un esófago negro luego de un episodio de hipotensión. La necrosis fue confirmada histológicamente. Los pacientes se presentan con hematemesis y melena en más del 70% de los casos. Los hallazgos endoscópicos muestran una coloración negruzca de la mucosa esofágica. El diagnóstico se realiza con endoscopia y confirmación histológica. La mortalidad es alta (más del 50% aunque relacionada a las enfermedades de base del paciente. Por último, podemos decir que la sospecha es muy importante en el diagnóstico de ENA, particularmente en pacientes ancianos con enfermedades asociadas y evidencia de hemorragia digestiva alta. En este trabajo describimos las características clínicas, endoscópicas e histopatológicas de un paciente con ENA.

  9. Pantani di Marco Martinelli: una narrazione polifonica

    Directory of Open Access Journals (Sweden)

    Franco Nasi

    2014-05-01

    Full Text Available In questo articolo si analizza il testo drammaturgico Pantani di Marco Martinelli, una veglia epica teatrale di uno dei più noti eroi dello sport italiano degli ultimi anni. Il dramma rilegge anche la storia di Pantani e ricostruisce gli strani avvenimenti che portarono alla sospensione, alla estromissione del ciclista dal Giro d’Italia nel 1999, e in seguito alla sua profonda crisi psicologica e tragica morte in solitudine in un hotel, a soli 34 anni. Oltre alle modalità proprie della veglia rituale, il dramma utilizza anche i metodi del processo giudiziario, e offre testimonianze dettagliate che conducono a una riflessione critica sulla società italiana negli anni del potere politico di Berlusconi e della sua filosofia del consumismo. I tre diversi generi della retorica classica (epidittico, giudiziario e deliberativo si mescolano in questa complessa tessitura teatrale. Coniugando informazioni (processo e rito (veglia, Martinelli riesce a fondere la tragedia greca (forma mimetica e corale e il moderno teatro di narrazione (forma diegetica monologante. Combinando assieme scene intensamente drammatiche, ricordi di imprese sportive epiche, passaggi giocosi e parodici, e giustapponendo vari stili e registri (giornalistico, lirico, parodico, elegiaco, Martinelli crea momenti di forte “straniamento” e sorpresa, e rende particolarmente efficace il rito funebre, la ricostruzione storica della tragica vicenda di Pantani e la critica all’ideologia che ha dominato l’Italia negli anni di Berlusconi. 

  10. A. S. Byatt: una narradora total

    Directory of Open Access Journals (Sweden)

    Izquierdo, Paula

    2009-06-01

    Full Text Available Antonia S. Byatt nació en 1936, en Sheffield, Yorkshire. Es una de las novelistas mas complejas e intensas en lengua inglesa del momento. Inició su andadura en la literatura como profesora y crítica, y esta doble faceta le fue muy útil a la hora de pergeñar qué y cómo escribir. Si algo caracteriza la literatura moderna es que los narradores no suelen juzgar, sino que ofrecen los distintos puntos de vista para que sea el lector quien saque conclusiones. Si algo caracteriza su prosa es el virtuosismo con que da voz y verosimilitud a los personajes que habitan sus novelas. Algunos críticos la han tildado de victoriana postmoderna, debido a sus gustos refinados y, qué duda cabe, a que sus textos ponen de manifiesto su formación: su estilo es literario; los personajes pertenecen al que fue su ámbito académico; las referencias cultas y las disquisiciones intrincadas son ella misma. una gran propuesta.

  11. Proceedings of the 24. National seminar on the rational use of energy and exposition of equipment and services and 7. Binational seminar on energy saving [Selected Papers]; 24. Seminario nacional sobre el uso racional de energia y exposicion de equipos y servicios y 7. Seminario binacional de ahorro de energia. Memoria Tecnica. [Ponencias seleccionadas

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    This document contains the technical briefings of the 24. National Seminar on the rational use of energy, and exhibition of the equipment and services and the 7. Binational seminar on energy saving, organized by the Asociacion de Profesionistas y Tecnicos en Aplicacion Energetica (ATPAE), in Ciudad Juarez, Chihuahua, Mexico, from November 9 to 11, 2005. This seminar dealt with subjects such as: electrical energy saving, energy distribution, solar energy, energy saving in compressed air, biomass, administration and control of the demand of the electrical energy, bioclimatic architecture, use of the compressed natural gas, renewable energy, co-generation, qualification and consultancy for the intelligent use of the energy in PyMES. [Spanish] Este documento contiene la memoria tecnica del 24 Seminario Nacional sobre el uso racional de energia, y exposicion de los equipos y servicios y el 7 Seminario binacional de ahorro de energia, organizado por la Asociacion de Tecnicos y Profesionistas en Aplicacion Energetica (ATPAE), en Ciudad Juarez, Chihuahua, Mexico, del 9 al 11 de noviembre del 2005. Este seminario trato temas tales como: ahorro de energia electrica, distribucion de la energia, energia solar, ahorro de energia en aire comprimido, biomasa, administracion y control de la demanda de la energia electrica, arquitectura bioclimatica, uso del gas natural comprimido, energia renovable, cogeneracion, capacitacion y consultoria para el uso inteligente de la energia en las Pymes.

  12. Proceedings of the 22 National seminar on the rational an efficient use of energy and exposition of equipment and services. [Selected Papers]; 22. Seminario nacional sobre el uso racional y eficiente de la energia y exposicion de equipos y servicios. Memoria Tecnica. [Ponencias seleccionadas

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    This document contains the proceedings of the 22 national seminar on the rational and efficient use of energy and exposition of equipment and services, organized by the Asociacion de Tecnicos y Profesionistas en Aplicacion Energetica (ATPAE), in Mexico, D.F., from the 25 to the 29 of August of 2003. This Seminar covered subjects such as: Energy saving in the power sector, power efficiency in industrial processes and practical developments, practical cases of energy saving in industry, energy saving in constructions, transport, utilization of renewable energies and the environment. [Spanish] Este documento contiene la memoria tecnica del 22 seminario nacional sobre el uso racional y eficiente de la energia y exposicion de equipos y servicios, organizado por la Asociacion de Tecnicos y Profesionistas en Aplicacion Energetica (ATPAE), en Mexico, D.F., del 25 al 29 de agosto de 2003. Este seminario trato de temas tales como: Ahorro de energia en el sector energetico, eficiencia energetica en procesos industriales y desarrollos practicos, casos practicos de ahorro de energia en la industria, ahorro de energia en edificaciones, transporte, aprovechamiento de energias renovables y ambiente.

  13. Effect of NaCl upon an Al-Si casting alloy hipoeutec; Efecto del NaCl sobre una aleacion de Al-Si hipoeutectica vaciada

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Delgado, E.J.; Ortega de la Rosa, R. [Istituto Tecnologico de Zacatecas, Zacatecas (Mexico)]. E-mail: enriquemartinez_1999@yahoo.com; rubin_ortega_2002@yahoo.com.mx; Cisneros Guerrero, M.A. [Instituto Tecnologico de Saltillo, Saltillo, Coahuila (Mexico)]. E-mail: cisneros@its.mx; Haro Rodriguez, S. [Universidad Autonoma de Zacatecas, Zacatecas, Zacatecas (Mexico)]. E-mail: haros907@hotmail.com

    2009-10-15

    This work, comprehends the study about the effect of NaCl kind Halite upon the morphology of eutectic Silicon and porosity in a cast hipoeutectic Al-Si alloy. The melting was carried out in two furnaces, the first to combustion of LP gas in graphite crucible to increase the content of Si in the alloy from 0.13 to 5% wt using metallic silicon with a purity of 99.35% wt, and the second of electric resistances in the same kind of crucible to control the temperature at 750 degrees Celsius. The melting material was casting into molds of sand shell. To add the salt into the metallic bath, two techniques were used; one with injection by means of Argon gas and the other on by gravity, both cases three quantities of salt were used, 0.5, 1.5 and 2.5% wt respectively, powdered and preheated at 150 degrees Celsius during 60 min. The obtained samples were analyzed metallographily evidencing the modification of the eutectic Si, presenting the best results the samples with 1.5 and 2.5% wt of salt added by gravity. Too was obtained effect of Salt upon the degassing of bath metallic, where the simples with 1.5% wt presented the best results. Finally, by means of Scanning Electron Microscopy, the precipitates present were characterized in the samples. [Spanish] Este trabajo comprende el estudio del efecto del NaCl tipo Halita sobre la morfologia del Si eutectico y la porosidad en una aleacion fundida Al-Si hipoeutectica. La fusion se llevo a cabo en dos hornos, el primero a combustion con gas LP en crisol de grafito con la finalidad de incrementar el contenido de Si en la aleacion de 0.13 a 5% en peso, utilizando silicio metalico con una pureza de 99.35%, y el segundo de resistencias electricas en el mismo tipo de crisol para controlar la temperatura a 750 grados Celsios. El material fundido fue vaciado en modelos de arena. La sal se anadio al bano metalico a 0.5, 1.5 y 2.5% en peso, respectivamente, pulverizada y precalentada a 150 grados Celsios durante 60 min, mediante dos

  14. IMPACTO AMBIENTAL DE UNA MINA DE MERCURIO ABANDONADA

    OpenAIRE

    ALVAREZ CUARTAS, MARIA

    2016-01-01

    El objetivo principal de este Trabajo Fin de Máster es la evaluación del impacto ambiental de una explotación minera de mercurio en estado de abandono y de posible contaminación del medio ambiente. Una vez que se comprueba el elevado impacto debido al estado de abandono y a la alta contaminación, se ha elaborado una sencilla propuesta de restauración, barajado y comprando tres posibles alternativas.

  15. Schelling: una biología teológica

    OpenAIRE

    Leyte, Arturo

    1998-01-01

    El Presente Trabajo Va Mas Alla De Una Exposicion Del Papel De La Biologia En Elconjunto De La Filosofia De Schelling Y Propone Una Interpretacion De Sunaturphilosophie Como Biologia A Partir De La Cual Se Reinterpreta Lo Absoluto Odios Como Organismo. Desde Esta Biologizacion De Dios Se Autocomprende Lafilosofia Como Biografia: La Materia Y La Naturaleza En Su Conjunto, Lejos Deser El Objeto De Una Ciencia, Son El Mismo Sujeto Real E Historico, Un Sujeto Alque Solo Cabe El Nombre De "Vida". ...

  16. Apuntes para una historia de Las12

    Directory of Open Access Journals (Sweden)

    Paula Torricella

    2011-09-01

    Full Text Available En este artículo exploramos la historia de Las12, el suplemento feminista del diario Página/12, desde su nacimiento en 1998 hasta la actualidad. El análisis pretende reponer los antecedentes de este suplemento en la prensa gráfica argentina, así como reconstruir el contexto de su aparición y las relaciones que entabló con el diario que lo publica. A partir de una lectura general y de comunicaciones con su directora actual y otras periodistas, realizamos una descripción del perfil del suplemento y proponemos ciertos momentos en los que anclar una periodización posible de su historia. Discutimos la pertinencia de entenderlo como "periodismo de género", tal como se concibe actualmente a esta modalidad de la prensa. Y lo contrastamos con dos proyectos periodísticos para los que es un referente necesario: la Asociación Civil Artemisa Comunicación y su portal web de noticias; y Soy, el suplemento de diversidad sexual que el mismo diario inauguró en 2008 y que comparte su directora con Las12. El último apartado realiza un breve recorrido por el suplemento La República de las Mujeres del diario uruguayo La República. El objetivo es señalar algunos rasgos compartidos y aquellas distancias que mantiene con su par argentino.In this article we explore the history of Las12, the feminist publication of Página/12 journal, since its first appearance in 1998 until today. The analysis intends to replace previous publications of this kind in the print media of Argentina, the context of its emergence and the relationships that established with the newspaper to which belongs. While describing its style and proposing a periodization of its history, we discuss the relevance of regarding it as "gender journalism" in the mode that it is currently defined. We compare this publication with two projects for which is a mandatory reference: the Asociación Civil Artemisa Comunicación and its website; and Soy, the publication of sexual diversity of P

  17. Andropausia y sexualidad. ¿Una paradoja?.

    Directory of Open Access Journals (Sweden)

    Elia del Carmen Rosalez

    2009-10-01

    Full Text Available El presente estudio es cualitativo con enfoque de la teoría fundada y planteada por Glaser y Strauss1, porque se trató de entender la experiencia cotidiana tal como la vive el actor social para obtener conocimientos de ella. La información se recolectó a través de una serie de entrevistas gravadas a los sujetos en estudio (hombres entre 50 y 60 años. Las categorías que surgieron de las primeras entrevistas, generaron nuevos interrogantes y nuevas aproximaciones que permitieron esclarecer dudas, determinar otras categorías, refinar las existentes o establecer otras para luego tomar las relevantes. Los entrevistados manifestaron conocer la génesis de los cambios que se producen durante la andropausia y así lo expresan: "disminución de ciertas hormonas", "declinación biológica". El conocer los cambios les permite percibirlos cuando se presentan; "se pierde urgencia para eyacular", "hay demora en la erección", "el rendimiento sexual y la potencialidad son menores", "sentimos o queremos sentir menos que la mujer en la menopausia, pero hay una disminución en el interés sexual". Se conserva "la capacidad sexual", "el entusiasmo". Se gana "mesura", "espiritualidad", "conocimiento mutuo", "afectividad", "tranquilidad". Por todo lo anterior se puede afirmar que los cambios surgidos contraindican las expectativas del papel sexual asignado culturalmente al hombre y en oportunidades no está preparado para afrontar la situación que generan los cambios biológicos. Este proceso permitió replantear a los hombres lo que hasta el momento era su vida sexual, llevándolos a una plenitud sexual. Se establece el ayer (la juventud y el hoy (la senectud. El ayer en donde sólo pensaban en su disfrute, en poder tener el mayor número de eyaculaciones, en donde se presentaba la ansiedad por quedarle bien a la pareja, la urgencia por eyacular y el hoy cuando el hombre se siente en el declinar biológico y sexual, busca sacarle partido a otros aspectos

  18. Climatización de una piscina cubierta en Pamplona

    OpenAIRE

    Goñi Echeverz, Iñaki

    2013-01-01

    En el presente proyecto se evaluarán las diferentes alternativas a la hora de climatizar una piscina municipal cubierta a 25ºC el agua de la piscina y 27ºC y 65% humedad el aire del recinto. Se plantean diversos escenarios técnicos económicos, partiendo de un mix compuesto por una instalación geotérmica, una de solar térmica y para cubrir puntas de demanda energética una caldera biomasa, tras realizar el estudio económico el mix es 40-40-20% respectivamente. Para poder plant...

  19. Lecturas interculturales: Una propuesta para el aula de ELE

    OpenAIRE

    Concepción Francos Maldonado

    2010-01-01

    En una sociedad pluricultural y plurilingüe es necesario fomentar el respeto al plurilingüismo, a la diversidad cultural, y potenciar el desarrollo de la conciencia intercultural. Una vía, para ello, son las lecturas multiculturales. Sabemos que adquirir una lengua, materna o no, implica un complejo campo de aspectos que van más allá de lo lingüístico. Por otra parte, es importante tener en cuenta en el aprendizaje de una L2 el bagaje de conocimientos previos del alumnado que aprende. Entre e...

  20. Optimización de una cadena de suministro

    OpenAIRE

    Antúnez Ruiz, Marta

    2006-01-01

    El presente proyecto se ha realizado bajo un convenio de cooperación educativa entre Universidad y Empresa en una planta de productos químicos de una compañía de gran consumo. El proyecto se basa en la optimización de una cadena de suministro a través de la eliminación de las pérdidas existentes, entendiendo como pérdidas todas las operaciones que no dan valor añadido al producto final. La metodología usada es el Value Stream Mapping, una herramienta del Lean Manufacturing. La ...