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Sample records for bloqueo angular agudo

  1. Bloqueo auriculoventricular completo fetal

    OpenAIRE

    Bustos,Paola; Santiago,Claudia; Bahamondes,Francisco; Jaramillo,Luis

    2002-01-01

    Uno de los disturbios más graves del ritmo cardíaco fetal es el bloqueo aurículoventricular completo o de 3er grado (BAVC), condición de fácil detección clínica y ecocardiográfica, y muchas veces de altísima mortalidad fetal, que indica la necesidad de intervención terapéutica urgente. Se presenta el caso clínico de una paciente que teniendo el antecedente de un RN anterior con el mismo diagnóstico, se envía a nuestro servicio con bradiarritmia en el feto actual, para realizar estudio y trata...

  2. Efeito agudo do calçado de diferentes alturas sobre o comportamento angular do tornozelo Acute effect of shoes with different heights on the ankle angular behavior

    Directory of Open Access Journals (Sweden)

    Mirieli Denardi Limana

    2012-09-01

    Full Text Available Estudos descrevem que o uso de salto alto exige do corpo uma série de ajustes compensatórios, a fim de manter os seus movimentos e equilíbrio próximos à normalidade. No andar, a interferência do salto alto sobre o pé e sobre a articulação do tornozelo parece desencadear uma postura diferente da posição anatômica. O presente estudo teve como objetivos comparar a cinemática sagital do tornozelo em diferentes calçados e verificar a existência de um limite de altura de salto que possa levar a articulação do tornozelo a adaptações durante o andar. Esta pesquisa, caracterizada como experimental, foi constituída por uma análise cinemática bidimensional do tornozelo no plano sagital. A amostra foi composta por dez universitárias, com média de idade de 19,2 (±1,8 anos, que caminharam sobre uma esteira utilizando um tênis e três sandálias do tipo tamanco, com saltos de 3, 7 e 10 cm. Para cada ciclo de passada, foram identificados picos de movimento do tornozelo referentes à dorsiflexão e à flexão plantar. Os resultados mostraram que na flexão plantar, com o aumento da altura do salto, há uma tendência de acentuação do pico angular do tornozelo. Concluiu-se que saltos acima de 3 cm de altura induzem a articulação do tornozelo a realizar uma flexão plantar sustentada, mudando as características da marcha na fase de apoio e de balanço. Tais evidências sugerem alturas de saltos menores de 3 cm como limites de segurança para manutenção do padrão normal da marcha em mulheres jovens.Studies have described that using high heels requires a series of compensatory adjustments of the body to keep its movements and balance close to normality. When walking, the interference of high heels on the foot and on the ankle joint seems to initiate a different posture from the anatomical position. The present study aimed at comparing the sagittal kinematics of the ankle in different shoes and at verifying the existence of a height

  3. Abceso apical agudo

    OpenAIRE

    Jara Ortiz, M.; López, M.; Gómez Viglino, L.; Maydana, N.; Hervit, M.; Bertola, N.

    2015-01-01

    En casos de urgencia, muchas veces debemos poner a prueba distintos elementos de diagnóstico para encontrar la mejor respuesta posible. En este caso se reporta un absceso apical agudo en la zona palatina del sector 1, que, de acuerdo al test de vitalidad pulpar y correcta interpretación radiográfica se localiza la pieza causal N° 1.8.Asistió a la consulta un paciente masculino 30 años de edad, dolor a la masticación, edema y tumefacción, en zona palatina comprendida en piezas 1.5; 1.6; 1.7 y ...

  4. Bloqueo sesamoideo abaxial con ketamina en el caballo

    OpenAIRE

    Cruz Amaya, Jorge Mario

    2003-01-01

    En este trabajo se ha evaluado la posibilidad que tiene la Ketamina de actuar como analgésico local, utilizando el modelo experimental de la lampara de luz concentrada como estímulo doloroso supramaximo. En este modelo, el fármaco a evaluar se aplica sobre los nervios digitales palmares (bloqueo sesamoideo abaxial) y posteriormente, el estímulo nocivo, en la piel de la cuartilla. Antes de inducir el bloqueo se determinó el tiempo de retirada normal para un caballo sin analgesia al aplicarse e...

  5. New comparative ultrasound biomicroscopic findings between fellow eyes of acute angle closure and glaucomatous eyes with narrow angle Novos achados comparativos de biomicroscopia ultra-sônica entre olhos contralaterais com fechamento angular agudo e olhos glaucomatosos com ângulo estreito

    Directory of Open Access Journals (Sweden)

    Rafael Vidal Mérula

    2008-12-01

    Full Text Available PURPOSE: To compare morphometric features between fellow acute primary angle-closure (APAC eyes and glaucomatous or suspect eyes with narrow angle (NA. METHODS: Fellow eyes of 30 patients with unilateral APAC and 30 with NA were evaluated by ultrasound biomicroscopy (UBM under light and dark conditions. UBM parameters such as anterior chamber depth (ACD, angle opening distance at 250 µm/500 µm from the scleral spur (AOD250/AOD500, trabecular ciliary process distance (TCPD and iris-lens contact distance (ILCD were measured in the superior (SQ and inferior (IQ quadrants. RESULTS: Significant differences between APAC fellow and NA eyes were found in ACD, POBJETIVO: Comparar características morfométricas entre olhos contralaterais com fechamento angular primário agudo (FAPA e olhos glaucomatosos ou suspeitos com ângulo estreito (AE. MÉTODOS: Olhos contralaterais de 30 pacientes com FAPA unilateral e olhos de 30 pacientes com AE foram avaliados através da biomicroscopia ultra-sônica (BUS no claro e escuro. Parâmetros da BUS como a profundidade central de câmara anterior (PCA, distância da abertura angular a 250 µm/500 µm do esporão escleral (AOD250/AOD500, distância entre o processo ciliar e o trabeculado (TCPD e distância do contato iris-cristalino (ILCD foram medidos nos quadrantes superior (QS e inferior (QI. RESULTADOS: Diferenças significativas entre olhos contralaterais de FAPA e olhos com AE foram encontradas na PCA, p<0,001; AOD250 no QS e QI, p<0,001; AOD500 no QS e QI, p<0,001; TCPD no claro, p=0,010 e TCPD no escuro no QS, p=0,031; e TCPD no claro no QI, p=0,010. Diferenças significativas entre exames no claro e escuro realizados em olhos contralaterais com FAPA foram encontradas na ILCD (p=0,009 no QS e ILCD no QI (p=0,006, e em olhos com SE na ILCD no QS (p=0,047 e ILCD no QI (p<0,001. CONCLUSÕES: Olhos contralaterais de FAPA apresentam um segmento anterior mais aglomerado e uma PCA menor que olhos com AE. ILCD

  6. Dolor lumbar agudo: mecanismos, enfoque y tratamiento

    OpenAIRE

    Mahecha Toro, Marco Tulio

    2009-01-01

    El dolor lumbar agudo tiene un gran impacto socioeconómico a nivel mundial, esto lo constituye en un problema de salud pública. En nuestro país su ocurrencia es muy similar a la de otras latitudes. A lo largo de la historia se ha considerado como un “precio” que debemos pagar los mamíferos bipedestres de importante longevidad. Comparte sus mecanismos fisiopatológicos con los otros tipos de dolor agudo. Sin embargo, en la gran mayoría de los casos, implica un reto determinar su origen patológi...

  7. Esclerosis sistémica complicada con síncope y bloqueo AV completo

    Directory of Open Access Journals (Sweden)

    Francisco Femenía

    2010-10-01

    Full Text Available La esclerosis sistémica es una compleja enfermedad que afecta el tejido conectivo, el sistema vascular y el sistema inmunológico, y se caracteriza por fibrosis cutánea y de órganos viscerales. Los bloqueos de rama y los hemibloqueos se presentan en el 25 a 75% de los casos y constituyen predictores independientes de mortalidad. Los bloqueos auriculoventriculares de segundo o tercer grado son muy raros. Presentamos el caso de una mujer de 47 años de edad, con diagnóstico de esclerosis sistémica, quien presenta episodio sincopal secundario a bloqueo auriculoventricular completo con necesidad de implante de marcapasos definitivo.

  8. Nuevos antiagregantes plaquetarios en síndrome coronario agudo

    Directory of Open Access Journals (Sweden)

    Andrés F. Buitrago, MD

    2013-05-01

    Full Text Available En la actualidad las enfermedades cardiovasculares son la principal causa de muerte en los países industrializados y para 2020, lo serán en países en vía de desarrollo. El síndrome coronario agudo se caracteriza por la ruptura o erosión de una placa aterosclerótica que trae consigo grados variables de trombosis y embolización distal, que llevan a una disminución en la perfusión miocárdica. Posterior a la disrupción vascular, empieza un proceso de agregación, activación y adhesión plaquetaria que inicia la formación del trombo mural. Dado que el primer paso en la formación del trombo coronario involucra la activación y la agregación plaquetaria, el tratamiento con medicamentos antiplaquetarios es una de las piedras angulares del síndrome coronario agudo. La antiagregación dual con ácido acetil salicílico y un inhibidor del receptor P2Y12, hacen parte del manejo actual de los pacientes con síndrome coronario agudo y de aquellos sometidos a intervención coronaria percutánea. El clopidogrel es el inhibidor del receptor P2Y12 más utilizado; sin embargo, sus beneficios clínicos se ven limitados por varios factores que interfieren con la conversión del medicamento a su metabolito activo. Es por esto que recientemente se han desarrollado nuevos inhibidores del receptor P2Y12, como prasugrel y ticagrelor, con un efecto antiplaquetario más potente y mayores beneficios clínicos. Las actualizaciones recientes de las guías de manejo basadas en la evidencia los han incluido como parte del tratamiento de esta patología con un grado de recomendación incluso mayor que el de clopidogrel.

  9. Nuevos antiagregantes plaquetarios en síndrome coronario agudo

    Directory of Open Access Journals (Sweden)

    Andrés F Buitrago

    2013-06-01

    Full Text Available En la actualidad las enfermedades cardiovasculares son la principal causa de muerte en los países industrializados y para 2020, lo serán en países en vía de desarrollo. El síndrome coronario agudo se caracteriza por la ruptura o erosión de una placa aterosclerótica que trae consigo grados variables de trombosis y embolización distal, que llevan a una disminución en la perfusión miocárdica. Posterior a la disrupción vascular, empieza un proceso de agregación, activación y adhesión plaquetaria que inicia la formación del trombo mural. Dado que el primer paso en la formación del trombo coronario involucra la activación y la agregación plaquetaria, el tratamiento con medicamentos antiplaquetarios es una de las piedras angulares del síndrome coronario agudo. La antiagregación dual con ácido acetil salicílico y un inhibidor del receptor P2Y12, hacen parte del manejo actual de los pacientes con síndrome coronario agudo y de aquellos sometidos a intervención coronaria percutánea. El clopidogrel es el inhibidor del receptor P2Y12 más utilizado; sin embargo, sus beneficios clínicos se ven limitados por varios factores que interfieren con la conversión del medicamento a su metabolito activo. Es por esto que recientemente se han desarrollado nuevos inhibidores del receptor P2Y12, como prasugrel y ticagrelor, con un efecto antiplaquetario más potente y mayores beneficios clínicos. Las actualizaciones recientes de las guías de manejo basadas en la evidencia los han incluido como parte del tratamiento de esta patología con un grado de recomendación incluso mayor que el de clopidogrel.

  10. Esclerosis sistémica complicada con síncope y bloqueo AV completo

    OpenAIRE

    Francisco Femenía; Mauricio Arce; Martín Arrieta

    2010-01-01

    La esclerosis sistémica es una compleja enfermedad que afecta el tejido conectivo, el sistema vascular y el sistema inmunológico, y se caracteriza por fibrosis cutánea y de órganos viscerales. Los bloqueos de rama y los hemibloqueos se presentan en el 25 a 75% de los casos y constituyen predictores independientes de mortalidad. Los bloqueos auriculoventriculares de segundo o tercer grado son muy raros. Presentamos el caso de una mujer de 47 años de edad, con diagnóstico de esclerosis sistémic...

  11. Angular Momentum

    Science.gov (United States)

    Shakur, Asif; Sinatra, Taylor

    2013-01-01

    The gyroscope in a smartphone was employed in a physics laboratory setting to verify the conservation of angular momentum and the nonconservation of rotational kinetic energy. As is well-known, smartphones are ubiquitous on college campuses. These devices have a panoply of built-in sensors. This creates a unique opportunity for a new paradigm in…

  12. Edema pulmonar agudo neurogênico: relato de caso

    OpenAIRE

    Brito,José Correia De Farias; Diniz,Maria Cerly Almeida; Rosas,Roberto Ramalho; Silva,José Alberto Gonçalves Da

    1995-01-01

    Os autores apresentam um caso de edema pulmonar agudo numa paciente de 28 anos de idade acometida de hemorragia subaracnóidea secundária à rotura de aneurisma intracraniano. A sintomatologia respiratória ocorreu durante o agravamento do quadro neurológico. Alguns aspectos etiológicos e fisiopatogênicos do edema pulmonar agudo neurogênico são analisados.

  13. PAPEL DEL FACTOR DE BLOQUEO INDUCIDO POR PROGESTERONA (PIBF) EN EMBARAZO Y CÁNCER

    OpenAIRE

    Gutiérrez-Rodríguez, Araceli; Camacho-Arroyo, Ignacio

    2016-01-01

    El factor de bloqueo inducido por progesterona (PIBF) es una proteína inmunomoduladora por medio de la cual la progesterona ejerce varios de sus efectos inmunológicos en diferentes células de alta proliferación, que incluyen desde células embrionarias hasta células tumorales. El PIBF ocasiona un incremento en la síntesis de anticuerpos asimétricos y de citocinas tipo Th2 como las interleucinas (IL) 4, 6 y 10, así como una disminución en la actividad citotóxica de las células NK...

  14. Comunicación interventricular post infarto agudo del miocardio

    OpenAIRE

    Fabián A Ruiz; Alberto Cadena

    2013-01-01

    La comunicación interventricular es una de las complicaciones mecánicas posteriores al infarto agudo del miocardio que genera alta morbilidad y mortalidad. Luego del uso de trombolíticos esta complicación ha disminuido y ha hecho que esta entidad sea cada vez menos frecuente. En este artículo se expone el caso de un paciente con síndrome coronario agudo sin terapia de reperfusión inicial, con posterior ruptura del septum interventricular, en quien se evidenció la utilidad de la ecocardiogr...

  15. Bloqueo aurículo-ventricular familiar progresivo tipo I: descripción clínica de una familia

    Directory of Open Access Journals (Sweden)

    Guillermo Mora, MD

    2011-08-01

    Full Text Available Se presenta el caso de una familia con bloqueo aurículo-ventricular, que compromete varias generaciones, con herencia mendeliana autosómica dominante, que afecta de manera progresiva el sistema de conducción cardiaco llevando a síncope y muerte súbita en edades tempranas. Esta entidad corresponde al bloqueo familiar cardiaco progresivo tipo I, descrito principalmente en Suráfrica. El tratamiento con marcapaso definitivo fue exitoso.

  16. Oxcarbazepina para los episodios afectivos agudos en el trastorno bipolar

    Directory of Open Access Journals (Sweden)

    Akshya Vasudev

    2012-09-01

    Se necesitan ensayos controlados con asignación aleatoria con adecuado poder estadístico y de buena calidad metodológica para informar el potencial terapéutico de la oxcarbazepina a través del espectro de episodios agudos en el trastorno bipolar.

  17. Comunicación interventricular post infarto agudo del miocardio

    Directory of Open Access Journals (Sweden)

    Fabián A. Ruiz, MD

    2013-11-01

    En este artículo se expone el caso de un paciente con síndrome coronario agudo sin terapia de reperfusión inicial, con posterior ruptura del septum interventricular, en quien se evidenció la utilidad de la ecocardiografía en el diagnóstico de dicha entidad.

  18. Angular Accelerating White Light

    CSIR Research Space (South Africa)

    Dudley, Angela L

    2015-08-01

    Full Text Available angular acceleration during propagation which is achieved by superpositions of Bessel beams with non-canonical phase functions. They demonstrate these angular accelerating fields by modulating the phase and amplitude of a supercontinuum source with the use...

  19. Influencia del bloqueo directo y el uno contra uno en el éxito del lanzamiento en baloncesto

    Directory of Open Access Journals (Sweden)

    Verónica Muñoz Arroyave

    2015-03-01

    Full Text Available El presente estudio tiene como objetivo analizar el impacto del uno contra uno y el bloqueo directo sobre la eficacia en los lanzamientos. Se desarrolló un instrumento ad hoc denominado sistema de observación de conceptos fundamentales en baloncesto (SOCFB para estudiar las acciones ofensivas del Fútbol Club Barcelona Regal en la Copa del Rey en la temporada 2013-2014. Se analizaron un total de 643 acciones ofensivas donde se destacan los siguientes hallazgos: a el 34 % de las acciones del jugador con balón finalizaron en lanzamiento mientras que el 66 % terminaron en pases; b la principal consecuencia del uno contra uno interior fueron los lanzamientos (z = 6,2, p < 0,001; c en el uno contra uno exterior se encontraron relaciones estadísticamente significativas con el espacio exterior de la zona (z = 3,3, p < 0,001 y la lateralidad del espacio lateral izquierdo (z = 2, p <0,05; d en el bloqueo directo se observaron relaciones estadísticamente significativas con las acciones que no finalizaron. De estos resultados podemos extraer las siguientes conclusiones: a el bloqueo directo es el concepto más utilizado y fue utilizado como medio para la generación de ventajas; b el uno contra uno interior genera más lanzamientos y de mayor efectividad.

  20. Professional AngularJS

    CERN Document Server

    Karpov, Valeri

    2015-01-01

    A comprehensive guide to AngularJS, Google's open-source client-side framework for app development. Most of the existing guides to AngularJS struggle to provide simple and understandable explanations for more advanced concepts. As a result, some developers who understand all the basic concepts of AngularJS struggle when it comes to building more complex real-world applications. Professional AngularJS provides a thorough understanding of AngularJS, covering everything from basic concepts, such as directives and data binding, to more advanced concepts like transclusion, build systems, and auto

  1. Manejo prehospitalario del síndrome coronario agudo

    OpenAIRE

    Borrego Alfaraz, Cristina

    2017-01-01

    [EN] La cardiopatía isquémica, concretamente el síndrome coronario agudo, es una de las principales causas de mortalidad a nivel mundial. Además, con el envejecimiento de la población, su incidencia aumentará en las próximas décadas. Es por ello por lo que el conocimiento sobre este tema y la mejora en su abordaje se tornan imprescindibles. De esta manera, el manejo prehospitalario del síndrome coronario agudo se caracteriza por su rápida detección a través de la interpretación de un el...

  2. Síndromes aórticos agudos

    Directory of Open Access Journals (Sweden)

    Camilo Alvarado, MD

    2013-03-01

    la disección aórtica continúa siendo una enfermedad vascular catastrófica, a pesar del manejo con técnicas quirúrgicas y el advenimiento de nuevas intervenciones endovasculares. La sospecha clínica y la consulta al especialista en cirugía cardiovascular son pilares fundamentales en el abordaje terapéutico temprano de los pacientes afectados por los síndromes aórticos agudos.

  3. Coma profundo consecutivo a bloqueo del plexo braquial: A propósito de 1 caso

    Directory of Open Access Journals (Sweden)

    Domingo Ángel Labrada Tapia

    2002-04-01

    Full Text Available Se presenta el caso clínico infrecuente de un paciente masculino de 17 años de edad, que sufrió un accidente de tránsito y por el cual mostraba herida avulsiva del miembro superior izquierdo. Se le practicó bloqueo del plexo braquial por la técnica perivascular interescalénica, donde se utilizó como agente anestésico la mepivacaína al 2 %. Minutos después, el paciente cae en coma profundo con resolución muscular total, pupilas midriáticas y arreactivas, reflejo fotomotor, corneal y parpabral ausentes. Se intuba y acopla al respirador mecánico Mark-8, y la hemodinamia se mantuvo sin presentar convulsiones. Posteriormente, de forma paulatina, se recupera totalmente sin dejar secuelasThe clinical unfrequent case of a 17-year-old male patient that had an avulsive wound of the left upper limb as a result of a traffic accident is presented. Block of the brachial plexus was performed by the interscalene perivascular technique. Mepivacaine 2 % was used as an anesthetic. Some minutes later, the patient had a deep coma with total muscular resolution, mydriatic and non-reactive pupils. The photomotor, corneal and eyelid reflexes were absent. He was intubated and coupled to the Mark-8 mechanical respirator. The hemodynamics was maintained without presenting convulsions. Later on, he recovered himself gradually and had no sequelae

  4. El blocao (y el bloqueo de José Díaz Fernández

    Directory of Open Access Journals (Sweden)

    Luis Fernando Bueno Morillas

    2015-06-01

    Full Text Available El blocao (1928 fue la primera novela de José Díaz Fernández. Supuso un éxito editorial insólito hasta entonces porque reunía tres características novedosas: una actitud crítica ante la guerra de Marruecos, una integración de las novedades vanguardistas en la que su autor llamó literatura de avanzada y un posicionamiento del intelectual al lado de las reivindicaciones del pueblo. Sin embargo, aunque publicó otra novela un año después (La Venus mecánica, un libro teórico en el que definía la literatura que él propugnaba y practicaba (El nuevo romanticismo y algunas narraciones breves, Díaz Fernández se bloqueó y dejó la literatura narrativa que tan buenas expectativas levantó. Analizaremos las posibles causas de ese bloqueo.

  5. Papel del factor de bloqueo inducido por Progesterona (PIBF en embarazo y cáncer

    Directory of Open Access Journals (Sweden)

    Araceli Gutiérrez-Rodríguez

    2016-01-01

    Full Text Available El factor de bloqueo inducido por progesterona (PIBF es una proteína inmunomoduladora por medio de la cual la progesterona ejerce varios de sus efectos inmunológicos en diferentes células de alta proliferación, que incluyen desde células embrionarias hasta células tumorales. El PIBF ocasiona un incremento en la síntesis de anticuerpos asimétricos y de citocinas tipo Th2 como las interleucinas (IL 4, 6 y 10, así como una disminución en la actividad citotóxica de las células NK y en la producción de citocinas tipo Th1, como el factor de necrosis tumoral alfa (TNFα e IL-12. Lo anterior provoca una reducción en la relación Th1/Th2 que es característica del embarazo sano, lo que tiene como consecuencia un aumento en la inmunidad humoral y una disminución en la inmunidad celular. Estos mecanismos inmunomoduladores tienen como resultado una evasión del sistema inmune de la madre por parte del feto para que el embarazo llegue a término. De manera interesante, diversos estudios sugieren que estos mismos mecanismos son utilizados por las células cancerosas para facilitar la progresión de tumores que presentan sobre-expresión del PIBF.

  6. Angular correlation methods

    International Nuclear Information System (INIS)

    Ferguson, A.J.

    1974-01-01

    An outline of the theory of angular correlations is presented, and the difference between the modern density matrix method and the traditional wave function method is stressed. Comments are offered on particular angular correlation theoretical techniques. A brief discussion is given of recent studies of gamma ray angular correlations of reaction products recoiling with high velocity into vacuum. Two methods for optimization to obtain the most accurate expansion coefficients of the correlation are discussed. (1 figure, 53 references) (U.S.)

  7. El síndrome coronario agudo y otros diagnósticos provocan subregistro del infarto agudo del miocardio en el Hospital México, Costa Rica

    OpenAIRE

    Manuel Francisco Jiménez-Navarrete; Carlos Arguedas-Chaverri; Luis Romero-Triana

    2013-01-01

    Justificación: el infarto agudo del miocardio es un problema mayor de salud pública. Es necesario verificar su adecuado registro en Costa Rica para atender eficientemente su problemática. Materiales y métodos: estudio descriptivo y observacional. Se recopilaron los pacientes egresados del Hospital México con diagnósticos de síndrome coronario agudo, infarto agudo del miocardio, angina inestable y cardiopatía isquémica, de agosto 2005 a julio 2006, analizándose los registros de la oficina de B...

  8. Utilidad de la ecografía en el bloqueo anestésico de la extremidad pelviana en el perro

    OpenAIRE

    Echeverry Bonilla, Diego Fernando

    2012-01-01

    La presente Tesis Doctoral evaluó la utilidad de la ecografía en el bloqueo anestésico de los nervios ciático, femoral y plexo lumbar en el perro. Las características anatómicas de estas estructuras nerviosas fueron evaluadas en 12 cadáveres. La utilidad de la ecografía para el bloqueo anestésico de estas estructuras fue evaluada en in vitro 27 cadáveres caninos mediante la inyección guiada por ecografía de una tinción alrededor de los nervios estudiados y la posterior...

  9. Angular Acceleration without Torque?

    Science.gov (United States)

    Kaufman, Richard D.

    2012-01-01

    Hardly. Just as Robert Johns qualitatively describes angular acceleration by an internal force in his article "Acceleration Without Force?" here we will extend the discussion to consider angular acceleration by an internal torque. As we will see, this internal torque is due to an internal force acting at a distance from an instantaneous center.

  10. Rotations and angular momentum

    International Nuclear Information System (INIS)

    Nyborg, P.; Froyland, J.

    1979-01-01

    This paper is devoted to the analysis of rotational invariance and the properties of angular momentum in quantum mechanics. In particular, the problem of addition of angular momenta is treated in detail, and tables of Clebsch-Gordan coefficients are included

  11. Fisioterapia con complemento educativo en el ictus cerebral agudo

    OpenAIRE

    Rodríguez Expósito, Flavio

    2015-01-01

    La creciente demanda de fisioterapia y educación sanitaria en el ictus agudo, junto a la necesidad de ser eficientes, hacen necesario evaluar las intervenciones realizadas y hacer predicciones pronósticas tempranas que faciliten la gestión de dichos pacientes y disminuyan la variabilidad en la evaluación y tratamiento, siendo fundamental el primer mes de evolución como período de mayor evolución y valor pronóstico. OBJETIVO GENERAL Evaluar el efecto de un tratamiento de fisioterapia má...

  12. El sólido hiperbólico agudo

    Directory of Open Access Journals (Sweden)

    Rosa María Herrera

    2012-04-01

    Full Text Available Torricelli consideró el cálculo del volumen de sólido hiperbólico agudo como el mejor logro en sus trabajos con ‘indivisibles curvos’. Fue publicado en la Opera geometrica. Aquí se presenta como muestra del estilo de las demostraciones matemáticas (geométricas que se efectuaban en el siglo XVII, y por su valor precursor del cálculo infinitesimal. Es un ejemplo significativo para aproximarse al pensamiento torricelliano.

  13. Quark Orbital Angular Momentum

    Directory of Open Access Journals (Sweden)

    Burkardt Matthias

    2015-01-01

    Full Text Available Definitions of orbital angular momentum based on Wigner distributions are used as a framework to discuss the connection between the Ji definition of the quark orbital angular momentum and that of Jaffe and Manohar. We find that the difference between these two definitions can be interpreted as the change in the quark orbital angular momentum as it leaves the target in a DIS experiment. The mechanism responsible for that change is similar to the mechanism that causes transverse single-spin asymmetries in semi-inclusive deep-inelastic scattering.

  14. Optical Angular Momentum

    International Nuclear Information System (INIS)

    Arimondo, Ennio

    2004-01-01

    For many years the Institute of Physics has published books on hot topics based on a collection of reprints from different journals, including some remarks by the editors of each volume. The book on Optical Angular Momentum, edited by L Allen, S M Barnett and M J Padgett, is a recent addition to the series. It reproduces forty four papers originally published in different journals and in a few cases it provides direct access to works not easily accessible to a web navigator. The collection covers nearly a hundred years of progress in physics, starting from an historic 1909 paper by Poynting, and ending with a 2002 paper by Padgett, Barnett and coworkers on the measurement of the orbital angular momentum of a single photon. The field of optical angular momentum has expanded greatly, creating an interdisciplinary attraction for researchers operating in quantum optics, atomic physics, solid state physics, biophysics and quantum information theory. The development of laser optics, especially the control of single mode sources, has made possible the specific design of optical radiation modes with a high degree of control on the light angular momentum. The editors of this book are important figures in the field of angular momentum, having contributed to key progress in the area. L Allen published an historical paper in 1999, he and M J Padgett (together with M Babiker) produced few years ago a long review article which is today still the most complete basic introduction to the angular momentum of light, while S M Barnett has contributed several high quality papers to the progress of this area of physics. The editors' choice provides an excellent overview to all readers, with papers classified into eight different topics, covering the basic principles of the light and spin and orbital angular momentum, the laboratory tools for creating laser beams carrying orbital angular momentum, the optical forces and torques created by laser beams carrying angular momentum on

  15. Tratamiento del dolor agudo en el paciente dependiente de sustancias

    Directory of Open Access Journals (Sweden)

    DR. B. Juan Pablo Acuña

    2014-07-01

    Full Text Available El manejo del dolor agudo del paciente dependiente de sustancias, es un desafío para el profesional encargado de otorgar alivio a su síntoma. La dependencia de sustancias es reconocida como una enfermedad cerebral primaria crónica y recurrente. Su neurobiología y mecanismos fisiopatológicos de adaptación a la sustancia generan cambios en la percepción del dolor, en la respuesta a analgésicos opioides y cambios conductuales que interfieren con el tratamiento del dolor. Un conocimiento básico y claro respecto de lo descrito permite diseñar estrategias seguras y eficaces de alivio del dolor, sin interferir el curso de la enfermedad adictiva. Artículos de revisión, recomendaciones y guías elaboradas por expertos coinciden en que el tratamiento más eficaz del dolor incluye un manejo multimodal, un enfoque multidisciplinario, mantención de la terapia de sustitución y una estrecha vigilancia durante el episodio agudo de dolor y su seguimiento posterior.

  16. Bloqueios nervosos guiados por ultra-som Bloqueos nerviosos guiados por ultrasonido Ultrasound-guided nerve blocks

    Directory of Open Access Journals (Sweden)

    Pablo Escovedo Helayel

    2007-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: As técnicas de bloqueios nervosos guiados por ultra-som são baseadas na visualização direta das estruturas nervosas, da agulha de bloqueio e das estruturas anatômicas adjacentes. Desta maneira, é possível depositar a solução de anestésico local precisamente em torno dos nervos e acompanhar a sua dispersão em tempo real, obtendo-se, assim, um bloqueio mais eficaz, de menor latência, menor dependência de referências anatômicas, menor volume de solução anestésica e maior segurança. CONTEÚDO: O artigo revisa os aspectos relativos aos mecanismos físicos para formação de imagens, a anatomia ultra-sonográfica do neuroeixo e dos plexos braquial e lombossacral, os equipamentos e materiais empregados nos bloqueios, os ajustes do aparelho de ultra-som para melhorar as imagens, os planos de visualização das agulhas de bloqueio e as técnicas e o treinamento em bloqueios guiados por ultra-som. CONCLUSÕES: Os passos para se obter sucesso em anestesia regional incluem a identificação exata da posição dos nervos, a localização precisa da agulha, sem lesões nas estruturas adjacentes e, finalmente, a injeção cuidadosa de anestésico local junto aos nervos. Embora a neuroestimulação forneça grande auxílio na identificação dos nervos, esta não consegue, isoladamente, preencher todas essas exigências. Por isso, acredita-se que os bloqueios guiados por ultra-som serão a técnica de eleição para anestesia regional num futuro não muito distante.JUSTIFICATIVA Y OBJETIVOS: Las técnicas de bloqueos nerviosos guiados por ultrasonido se basan en la visualización directa de las estructuras nerviosas, de la aguja de bloqueo y de las estructuras anatómicas adyacentes. De esa manera, se puede depositar la solución de anestésico local precisamente en torno de los nervios y acompañar su dispersión en tiempo real, obteniéndose así, un bloqueo más eficaz, de menor latencia, menor dependencia de

  17. Efeitos do exercicio agudo sobre biomarcadores sericos de ratos diabeticos

    Directory of Open Access Journals (Sweden)

    Fabio Milioni

    2014-01-01

    Full Text Available INTRODUÇÃO: As respostas ao exercício agudo dos biomarcadores, como a fosfatase alcalina (FA e a creatina quinase (CK séricas têm sido pouco investigadas em ratos diabéticos. OBJETIVOS: Verificar os efeitos do exercício físico aeróbio agudo sobre as concentrações de CK e FA, bem como, avaliar o estado hídrico em ratos diabéticos experimentais. MATERIAIS E MÉTODOS Foram utilizados ratos Wistar machos, adultos jovens, distribuídos em dois grupos: diabéticos (DA e controles (CA. O diabetes foi induzido por meio da administração de aloxana monoidratado Sigma(r (32 mg/kg de peso corporal. Duas semanas após confirmação do diabetes, ambos os grupos foram submetidos a uma sessão aguda de natação por 30 min, com carga aeróbia (4,5 % do peso corporal. Foram avaliados: glicose, hematócrito, CK, FA, albumina e a cinética de lactato durante o exercício por meio de coletas 25 µL de sangue da cauda dos animais, nos minutos 0, 10, 20 e 30 de exercício. RESULTADOS: ANOVA de dois fatores para medidas repetidas e o teste post hoc de Tukey apontaram diminuição significativa dos valores de glicemia após o exercício para o grupo DA, aumento significativo de CK pós-exercício para o grupo DA, aumento significativo de hematócrito para ambos os grupos após exercício e manutenção da FA após exercício para o grupo DA. CONCLUSÃO: O exercício agudo aeróbio foi eficiente no controle dos níveis glicêmicos de ratos diabéticos. Entretanto, deve ser aplicado com cautela, pois induziu altos valores de CK, sugerindo possíveis lesões teciduais.

  18. Síndromes aórticos agudos

    Directory of Open Access Journals (Sweden)

    Camilo Alvarado

    2013-04-01

    Full Text Available La disección aórtica clásica es el síndrome aórtico más habitual. El común denominador de los síndromes aórticos agudos es la disrupción de la capa media, la presencia de hemorragia dentro de la pared (hematoma intramural, la separación extensa y progresiva de las capas en forma longitudinal (disección aórtica y la disrupción de la pared debido a una placa ateromatosa que se ulcera (úlcera aterosclerótica penetrante. Los factores de riesgo asociados con mayor frecuencia son la hipertensión arterial (72%, la aterosclerosis (31% y el antecedente de cirugía cardíaca previa. La clasificación de la disección aórtica aguda depende del sitio anatómico donde se encuentra el daño intimal y del segmento aórtico afectado. Las dos clasificaciones más usadas son los sistemas de DeBakey y Standford. El síntoma más común es el dolor torácico. En diferentes algoritmos se han usado la combinación de signos clínicos, herramientas no imaginológicas (electrocardiograma, los biomarcadores y la radiografía de tórax, y técnicas diagnósticas como el ecocardiograma, la tomografía axial computarizada, la aortografía y la resonancia magnética nuclear. Los síndromes aórticos agudos que comprometen la aorta ascendente son emergencias quirúrgicas. Conclusiones: la disección aórtica continúa siendo una enfermedad vascular catastrófica, a pesar del manejo con técnicas quirúrgicas y el advenimiento de nuevas intervenciones endovasculares. La sospecha clínica y la consulta al especialista en cirugía cardiovascular son pilares fundamentales en el abordaje terapéutico temprano de los pacientes afectados por los síndromes aórticos agudos.

  19. Fission fragment angular momentum

    International Nuclear Information System (INIS)

    Frenne, D. De

    1991-01-01

    Most of the energy released in fission is converted into translational kinetic energy of the fragments. The remaining excitation energy will be distributed among neutrons and gammas. An important parameter characterizing the scission configuration is the primary angular momentum of the nascent fragments. Neutron emission is not expected to decrease the spin of the fragments by more than one unit of angular momentum and is as such of less importance in the determination of the initial fragment spins. Gamma emission is a suitable tool in studying initial fragment spins because the emission time, number, energy, and multipolarity of the gammas strongly depend on the value of the primary angular momentum. The main conclusions of experiments on gamma emission were that the initial angular momentum of the fragments is large compared to the ground state spin and oriented perpendicular to the fission axis. Most of the recent information concerning initial fragment spin distributions comes from the measurement of isomeric ratios for isomeric pairs produced in fission. Although in nearly every mass chain isomers are known, only a small number are suitable for initial fission fragment spin studies. Yield and half-life considerations strongly limit the number of candidates. This has the advantage that the behavior of a specific isomeric pair can be investigated for a number of fissioning systems at different excitation energies of the fragments and fissioning nuclei. Because most of the recent information on primary angular momenta comes from measurements of isomeric ratios, the global deexcitation process of the fragments and the calculation of the initial fragment spin distribution from measured isomeric ratios are discussed here. The most important results on primary angular momentum determinations are reviewed and some theoretical approaches are given. 45 refs., 7 figs., 2 tabs

  20. ¿Está viva la OMC? Bloqueos y consensos en las negociaciones de las Conferencias Ministeriales de Bali

    Directory of Open Access Journals (Sweden)

    Julieta Zelicovich

    2017-05-01

    Full Text Available Tras más de una década de bloqueos en las negociaciones comerciales multilaterales, tanto en la Conferencia Ministerial de Bali, en 2013, como en la Conferencia Ministerial de Nairobi, en 2015, los miembros de la OMC lograron destrabar acuerdos multilaterales. El artículo propone indagar acerca de los factores que explican ese cambio en la dinámica de negociación, tratando de vislumbrar si se trata de un vuelco estructural o de resultados coyunturales. Para ello se recurre a la metodología de estudio de caso con process tracing, analizando la incidencia de variables del contexto internacional y variables internas a la dinámica de las negociaciones en los resultados mencionados

  1. Angular momentum projected semiclassics

    International Nuclear Information System (INIS)

    Hasse, R.W.

    1986-10-01

    By using angular momentum projected plane waves as wave functions, we derive semiclassical expressions for the single-particle propagator, the partition function, the nonlocal density matrix, the single-particle density and the one particle- one hole level density for fixed angular momentum and fixed z-component or summed over the z-components. Other quantities can be deduced from the propagator. In coordinate space (r, r') the relevant quantities depend on vertical stroker - r 3 vertical stroke instead of vertical stroker - r'vertical stroke and in Wigner space (R, P) they become proportional to the angular momentum constraints δ(vertical strokeRxPvertical stroke/ℎ - l) and δ((RxP) z /ℎ - m). As applications we calculate the single-particle and one particle- one hole level densities for harmonic oscillator and Hill-Wheeler box potentials and the imaginary part of the optical potential and its volume integral with an underlying harmonic oscillator potential and a zero range two-body interaction. (orig.)

  2. Angular Momentum in Fission

    Science.gov (United States)

    Gönnenwein, F.; Bunakov, V.; Dorvaux, O.; Gagarski, A.; Guseva, I.; Hanappe, F.; Kadmensky, S.; von Kalben, J.; Khlebnikov, S.; Kinnard, V.; Kopatch, Yu.; Mutterer, M.; Nesvizhevsky, V.; Petrov, G.; Prokhorova, E.; Rubchenya, V.; Sillanpää, M.; Simpson, G.; Sokolov, V.; Soldner, T.; Stuttgé, L.; Tiourine, G.; Trzaska, W.; Tsekhanovich, I.; Wagemans, C.; Wollersheim, H.-J.; Zavarukhina, T.; Zimmer, O.

    2008-04-01

    Three novel experiments in spontaneous and thermal neutron induced fission all with a bearing on angular momentum in fission are reviewed. In the first experiment it was observed that, in the reaction 235U(n, f) with incident polarized cold neutrons, the nucleus undergoing scission is rotating. This was inferred from the shift in angular distributions of ternary particles being dependent on the orientation of neutron spin. In the second study the properties of the angular momentum of spherical fission fragments was investigated. Current theories trace the spin of fragments to their deformations allowing for collective rotational vibrations at scission. However, in particular the spherical 132Te isotope exhibits a large spin at variance with theory. Exploiting the specific properties of cold deformed fission it could be proven that, for 132Te, single particle excitations instead of collective modes are responsible for the large spin observed. In a third project a pilot study was exploring the possibility to search for an evaporation of neutrons from fragments being anisotropic in their own cm-system. Due to fragment spin this anisotropy is claimed since decades to exist. It was so far never observed. A scheme has been devised and tested were triple coincidences between a fragment and two neutrons are evaluated in a way to bring the cm-anisotropy into the foreground while getting rid of the kinematical anisotropy in the lab-system due to evaporation from moving fragments. The test was run for spontaneous fission of 252Cf.

  3. Esclerosis sistémica complicada con síncope y bloqueo AV completo Systemic sclerosis complicated with syncope and complete AV block

    Directory of Open Access Journals (Sweden)

    Francisco Femenía

    2010-10-01

    Full Text Available La esclerosis sistémica es una compleja enfermedad que afecta el tejido conectivo, el sistema vascular y el sistema inmunológico, y se caracteriza por fibrosis cutánea y de órganos viscerales. Los bloqueos de rama y los hemibloqueos se presentan en el 25 a 75% de los casos y constituyen predictores independientes de mortalidad. Los bloqueos auriculoventriculares de segundo o tercer grado son muy raros. Presentamos el caso de una mujer de 47 años de edad, con diagnóstico de esclerosis sistémica, quien presenta episodio sincopal secundario a bloqueo auriculoventricular completo con necesidad de implante de marcapasos definitivo.Systemic sclerosis is a complex disease that affects the connective tissue, the vascular system and the immune system. It typically produces skin and organ fibrosis. Cardiac bundle branch blocks and fascicular blocks occur in 25-75% of the cases and were found to be independent predictors of mortality. Second and third degree atrioventricular block are very rare. We present the case of a 47 year-old female with diagnosis of systemic sclerosis, presented with syncope secondary to complete atrioventricular block requiring permanent pacemaker implantation.

  4. Angioedema hereditario: Tratamiento del ataque agudo en la Argentina

    Directory of Open Access Journals (Sweden)

    Alejandro Malbrán

    2014-06-01

    Full Text Available En el mundo, el angioedema hereditario (HAE afecta a 1 de cada 50 000 personas. Produce episodios de angioedema cutáneo, abdominal y laríngeos que generan gran incapacidad. La mortalidad por la enfermedad oscila entre 15 y 50%. Aunque en Argentina un concentrado plasmático de C1 inhibidor (pdC1INH ha estado aprobado y disponible por décadas para el tratamiento del ataque agudo, solo 15 (26% de 58 pacientes había recibido pdC1INH alguna vez hasta el año 2008, y solo 2(3.4% lo usaban regularmente. Luego de la aprobación de los nuevos medicamentos para HAE, incluido el icatibant en Argentina y de la publicación de las guías terapéuticas, 42 (82% de 51 pacientes del grupo original tienen pdC1INH para tratar el próximo ataque. Sin embargo, 16 (18% de estos pacientes continúan sin acceso a la medicación y otros 15 (35.7% acceden a través de otro enfermo en forma espuria. Solo 12 (28.6% de los pacientes con el medicamento puede auto tratarse en su domicilio. La mejora en el acceso a la medicación es importante pero debe extenderse a todos los afectados y facilitarse el auto-tratamiento.

  5. Infarto agudo de miocardio inducido por heroína

    Directory of Open Access Journals (Sweden)

    Beatriz Wills

    2014-09-01

    Full Text Available El uso mundial de drogas recreativas ha alcanzado proporciones preocupantes, al punto de amenazar la estabilidad socioeconómica de los países. Se estima que en los países desarrollados una de cada 4 personas ha utilizado drogas recreativas en algún momento de su vida. Por tanto, es frecuente que los médicos se enfrenten a cuadros de intoxicación secundaria al abuso de estas drogas. Además de sus efectos en el sistema nervioso central, también producen cambios significativos a nivel cardiovascular, responsables de una cantidad no despreciable de morbimortalidad relacionada con estas. En este artículo se expone un caso de infarto agudo de miocardio secundario al consumo de heroína, se revisan los efectos sistémicos de esta droga y se examinan el manejo y los mecanismos estudiados que explican esta relación.

  6. Optical angular momentum and atoms.

    Science.gov (United States)

    Franke-Arnold, Sonja

    2017-02-28

    Any coherent interaction of light and atoms needs to conserve energy, linear momentum and angular momentum. What happens to an atom's angular momentum if it encounters light that carries orbital angular momentum (OAM)? This is a particularly intriguing question as the angular momentum of atoms is quantized, incorporating the intrinsic spin angular momentum of the individual electrons as well as the OAM associated with their spatial distribution. In addition, a mechanical angular momentum can arise from the rotation of the entire atom, which for very cold atoms is also quantized. Atoms therefore allow us to probe and access the quantum properties of light's OAM, aiding our fundamental understanding of light-matter interactions, and moreover, allowing us to construct OAM-based applications, including quantum memories, frequency converters for shaped light and OAM-based sensors.This article is part of the themed issue 'Optical orbital angular momentum'. © 2017 The Author(s).

  7. AngularJS directives

    CERN Document Server

    Vanston, Alex

    2013-01-01

    This book uses a practical, step-by-step approach, starting with how to build directives from the ground up before moving on to creating web applications comprised of multiple modules all working together to provide the best user experience possible.This book is intended for intermediate JavaScript developers who are looking to enhance their understanding of single-page web application development with a focus on AngularJS and the JavaScript MVC frameworks.It is expected that readers will understand basic JavaScript patterns and idioms and can recognize JSON formatted data.

  8. Síndrome coronario agudo con supradesnivel del ST asociado al feocromocitoma con las catecolaminas inicialmente normales

    OpenAIRE

    Pacheco, Jorge M.; Pérez Baztarrica, Gabriel; Díaz Bozio, Fernando; Jiménez, Andrés; Porcile, Rafael

    2016-01-01

    Los feocromocitomas son tumores secretores de catecolaminas que cursan con paroxismos de hipertensión o hipotensión arterial y palpitaciones. Son una causa rara del síndrome coronario agudo. Presentamos el caso de una paciente con síndrome coronario agudo secundario a feocromocitoma que inicialmente tenía valores normales de catecolaminas.

  9. Síndrome coronario agudo con supradesnivel del ST asociado al feocromocitoma con las catecolaminas inicialmente normales

    Directory of Open Access Journals (Sweden)

    Jorge M. Pacheco

    2016-01-01

    Full Text Available Los feocromocitomas son tumores secretores de catecolaminas que cursan con paroxismos de hipertensión o hipotensión arterial y palpitaciones. Son una causa rara del síndrome coronario agudo. Presentamos el caso de una paciente con síndrome coronario agudo secundario a feocromocitoma que inicialmente tenía valores normales de catecolaminas.

  10. Angular Distribution of GRBs

    Directory of Open Access Journals (Sweden)

    L. G. Balázs

    2012-01-01

    Full Text Available We studied the complete randomness of the angular distribution of BATSE gamma-ray bursts (GRBs. Based on their durations and peak fluxes, we divided the BATSE sample into 5 subsamples (short1, short2, intermediate, long1, long2 and studied the angular distributions separately. We used three methods to search for non-randomness in the subsamples: Voronoi tesselation, minimal spanning tree, and multifractal spectra. To study any non-randomness in the subsamples we defined 13 test-variables (9 from Voronoi tesselation, 3 from the minimal spanning tree and one from the multifractal spectrum. We made Monte Carlo simulations taking into account the BATSE’s sky-exposure function. We tested therandomness by introducing squared Euclidean distances in the parameter space of the test-variables. We recognized that the short1, short2 groups deviate significantly (99.90%, 99.98% from the fully random case in the distribution of the squared Euclidean distances but this is not true for the long samples. In the intermediate group, the squared Euclidean distances also give significant deviation (98.51%.

  11. Evaluación del efecto de bloqueo en el condicionamiento clásico de preferencias

    Directory of Open Access Journals (Sweden)

    César A. Contreras-Bejarano

    2011-02-01

    Full Text Available Esta investigación experimental tuvo como objetivo poner a prueba el efecto de bloqueode Kamin en el condicionamiento clásico de preferencias. Se diseñaron tres partes: Estudio1, Experimento 1 y Experimento 2. El Estudio preliminar (n = 54 consistió en laelección de los estímulos condicionados (marcas publicitarias ficticias y del estímulo incondicionado(figura femenina con una proporción controlada de la medida de cintura/cadera. En el Experimento 1 (n = 60 se efectuó el entrenamiento en condicionamientoclásico de preferencias. Finalmente, en el Experimento 2 (n = 40, se examinó el efecto debloqueo en el condicionamiento clásico de preferencias con pruebas de tipo cognoscitivoy afectivo. Participaron estudiantes universitarios de diferentes carreras entre 17 y 25años. Los resultados indican que se manifestó un efecto de bloqueo en tres de las cuatropruebas utilizadas para evaluar dicho fenómeno. Se plantea, a manera de conclusión,que este efecto potencialmente explica diferentes fenómenos en los campos de la publicidady el mercadeo, especialmente en lo que concierne a competencia de marcas.

  12. Bloqueo auriculoventricular paroxístico desencadenado por estímulo vagal con síncope recurrente

    Directory of Open Access Journals (Sweden)

    Matías Calandrelli

    2008-01-01

    Full Text Available El bloqueo auriculoventricular completo (BAVC paroxístico con ECG de reposo normal es una entidad poco frecuente.Se presenta el caso de una paciente de 34 años que cursaba el segundo mes de embarazo y consultó por cuadros sincopales recurrentes.Luego de ser evaluada con ECG, eco-Doppler cardíaco, tilt test, estudio electroencefalográfico, TAC y RM de cerebro se descartó cardiopatía de base y se interpretó que se trataba de síncope neurocardiogénico.Por persistencia de los síntomas se realizó un Holter de 5 días hasta que presentó un nuevo síncope y se arribó al diagnóstico de BAVC paroxístico. Se indicó un marcapasos definitivo VDD y seis meses después persistía asintomática

  13. Complicaciones mecánicas del infarto agudo de miocardio: aunque infrecuentes, potencialmente letales

    OpenAIRE

    Jerson Quitian Moreno; Darwin Jhoan Ariza Rodríguez; Tatiana Rugeles; Laura Milena Bermúdez López

    2017-01-01

    Aunque la incidencia de complicaciones mecánicas en el infarto agudo de miocardio ha descendido después de la era de la intervención coronaria percutánea, la mortalidad sigue siendo significativa. La ruptura septal ventricular, la regurgitación mitral aguda y la ruptura de la pared libre del ventrículo izquierdo conforman el espectro de complicaciones mecánicas posteriores al infarto agudo de miocardio. La reparación quirúrgica es el pilar del tratamiento; sin embargo, como puente para la cir...

  14. Indicadores de calidad en la atención de pacientes con infarto agudo de miocardio

    OpenAIRE

    Mariana Soto; Andrés F. Buitrago; Mabel Gómez; Édgar Celis

    2014-01-01

    Objetivo: Describir el cumplimiento de los indicadores de calidad en la atención del infarto agudo de miocardio en un hospital de cuarto nivel en Bogotá, Colombia. Métodos: Estudio observacional, retrospectivo, descriptivo, en el que se incluyeron todos los pacientes con diagnóstico de infarto agudo de miocardio, de acuerdo con la Tercera Definición Universal del Infarto, que ingresaron a la Fundación Santa Fe de Bogotá desde enero de 2011 hasta abril de 2013. Resultados: El 99% de los ...

  15. Mecánica ventricular izquierda en pacientes con infarto agudo del miocardio

    OpenAIRE

    Zuluaga Rojas, Jose Fernando; Rojas Arenas, Andrés Orlando

    2015-01-01

    RESUMEN Introducción El papel de las nuevas técnicas ecocardiográficas para el diagnóstico de infarto agudo del miocardio se encuentra en desarrollo y la realización de mecánica ventricular izquierda podría sugerir la presencia de enfermedad coronaria hemodinámicamente significativa. Objetivos Determinar si en pacientes con infarto agudo del miocardio la medición de strain longitudinal global y regional sirve para predecir la presencia de enfermedad coronaria significativa. Mé...

  16. Abdomen agudo quirúrgico en el anciano

    Directory of Open Access Journals (Sweden)

    Jesús M Valdés Jiménez

    2002-04-01

    Full Text Available Se presenta un estudio descriptivo retrospectivo de 156 enfermos mayores de 65 años, con diagnóstico de abdomen agudo quirúrgico (AAQ, operados en el Hospital Clinicoquirúrgico «Manuel Fajardo» e ingresados en la Unidad de Cuidados Intermedios Polivalente, durante el trienio comprendido entre 1995 y 1998. Las causas más frecuentes del síndrome fueron la oclusión intestinal (58,9 %, la colecistitis aguda (13,5 % y la úlcera péptica gastroduodenal perforada (10,9 %. Las enfermedades asociadas de mayor prevalencia eran la cardiopatía isquémica (62,2 % y la hipertensión arterial (48,7 %. La mortalidad aumentó con el avance de la edad, y alcanzó el 70,4 % en los mayores de 85 años. Entre las complicaciones predominaron la infección de la herida quirúrgica (12,8 % y la bronconeumonía (5,8 %. La principal causa de muerte fue la sepsis (10,3 %A descriptive and retrospective study of 156 patients over 65 with diagnosis of acute surgical abdomen (ASA that were operated on at "Manuel Fajardo" Clinical and Surgical Hospital and admitted at the Polyvalent Intermediate Care Unit, from 1995 to 1998, was conducted. The most common causes of the syndrome were intestinal occlusion (58.9 %, acute cholecystitis (13.5 % and the gastroduodenal perforated peptic ulcer (10.9 %. The associated diseases of highest prevalence were ischemic heart disease (62.2 % and arterial hypertension (48.7 %. Mortality increased with age and amounted to 70.4 % in patients over 85. The infection of the surgical wound (12.8 % and bronchopneumonia (5.8% prevailed among the complications. Sepsis (10.3 % was the main cause of death

  17. Abdome agudo por obstrução por ileobiliar

    Directory of Open Access Journals (Sweden)

    Márcia Cristina de Alencastro

    Full Text Available OBJETIVO: descrever a experiência na abordagem dos doentes com abdome agudo por obstrução por IB, desde o diagnóstico até o tratamento definitivo. MÉTODOS: estudo retrospectivo incluindo todos os casos de IB tratados em um período de 23 anos. De acordo com a abordagem cirúrgica realizada, os pacientes foram divididos em dois grupos (1 enterolitotomia com colecistectomia no segundo momento; e (2 enterolitotomia, colecistectomia e abordagem da fístula. RESULTADOS: Doze pacientes foram incluídos, sendo 11 mulheres (91,6%, com média de idade de 72,2 anos. Todos os pacientes apresentavam doenças associadas, principalmente hipertensão arterial sistêmica (75%. Dois pacientes não apresentavam sintomas significativos de obstrução intestinal. O diagnóstico de IB foi realizado em seis pacientes (50% antes da laparotomia. O grupo 1 foi constituído de oito pacientes e o grupo 2 de quatro, e a morbidade foi, respectivamente, 33,3% e 8,3%. A mortalidade foi 16,6% (um paciente de cada grupo. CONCLUSÃO: O manejo do IB deve ser individualizado. O tratamento da obstrução mediante remoção do cálculo biliar por enterotomia proximal é a escolha inicial para o tratamento do IB. A colecistectomia e a correção da fístula bilioentérica podem ser realizadas juntamente com a remoção do cálculo, no entanto, em pacientes com comorbidades significativas, esses procedimentos devem ser realizados posteriormente.

  18. Angular integrals in d dimensions

    International Nuclear Information System (INIS)

    Somogyi, Gabor

    2011-01-01

    We discuss the evaluation of certain d dimensional angular integrals which arise in perturbative field theory calculations. We find that the angular integral with n denominators can be computed in terms of a certain special function, the so-called H-function of several variables. We also present several illustrative examples of the general result and briefly consider some applications. (orig.)

  19. Abdome agudo obstrutivo pela veia porta - relato de caso

    Directory of Open Access Journals (Sweden)

    Celeste Gomes Sardinha Oshiro

    2016-10-01

    Full Text Available Introdução: A veia porta pré-duodenal é uma anomalia congênita rara, sintomática em apenas 50% dos casos, sendo que seu diagnóstico é feito por laparotomia exploradora. O tratamento de escolha é cirúrgico, com bom prognóstico. Objetivo: Relatar um caso de Abdome Agudo Obstrutivo por Veia Porta Pré Doudenal (VPPD no período neonatal no Conjunto Hospitalar de Sorocaba. Metodologia: Descrição do referido caso e revisão de literatura. Relato de Caso: Recém-nascido de F.S.S., feminino, de parto normal em 30/05/2016, cuja mãe com 21 anos, apresentou durante pré-natal Diabetes Mellitus Gestacional e polihidrâmnio; negou consanguinidade, vícios e infecções. Ao nascimento, idade gestacional 38 1/7 semanas, peso 2865g, comprimento 47 cm, Apgar 9/9. Durante rotinas de sala de parto, à aspiração gástrica, saída de 55 ml de líquido claro com grumos (LCCG. No 4o dia de vida, episódios de vômito com sangue e distensão abdominal. No 11° dia de vida, realizada Laparotomia Exploradora que identificou dilatação gástrica e duodenal, principalmente na 3° porção, onde passa anteriormente a Veia Porta, comprimindo parcialmente a borda antimesentérica duodenal, o que comprometia seu esvaziamento. Realizada anastomose duodeno-jejunal. Recebeu alimentação parenteral por 15 dias. RN apresentou infecções fúngica e bacteriana, tratadas durante internação. Recebe alta com 46 dias de vida em aleitamento materno e boa recuperação clínica. Conclusão: Existem poucos relatos sobre a formação anômala da veia porta e suas consequências. O diagnóstico pré-natal ou pré-operatório de VPPD raramente é feito. Boa evolução pós correção cirúrgica.

  20. Angular-domain scattering interferometry.

    Science.gov (United States)

    Shipp, Dustin W; Qian, Ruobing; Berger, Andrew J

    2013-11-15

    We present an angular-scattering optical method that is capable of measuring the mean size of scatterers in static ensembles within a field of view less than 20 μm in diameter. Using interferometry, the method overcomes the inability of intensity-based models to tolerate the large speckle grains associated with such small illumination areas. By first estimating each scatterer's location, the method can model between-scatterer interference as well as traditional single-particle Mie scattering. Direct angular-domain measurements provide finer angular resolution than digitally transformed image-plane recordings. This increases sensitivity to size-dependent scattering features, enabling more robust size estimates. The sensitivity of these angular-scattering measurements to various sizes of polystyrene beads is demonstrated. Interferometry also allows recovery of the full complex scattered field, including a size-dependent phase profile in the angular-scattering pattern.

  1. Revisión de conocimientos sobre el fracaso renal agudo en el contexto del paciente crítico

    OpenAIRE

    Romero García, Marta; Delgado-Hito, Pilar; Cueva Ariza, Laura de la

    2013-01-01

    El fracaso renal agudo afecta entre un 1 y un 25% de los pacientes ingresados en unidades de cuidados intensivos, cifras que varían según la población y los criterios estudiados. Las complicaciones derivadas del fracaso renal agudo (hipervolemia, acidosis metabólica, hiperpotasemia, hemorragias) se tratan pero la mortalidad sigue siendo elevada a pesar de los avances tecnológicos de los últimos años ya que, habitualmente, el fracaso renal agudo está asociado a sepsis, insuficiencia respirator...

  2. Bloqueio seletivo dos nervos supraescapular e axilar promove analgesia satisfatória e menor grau de bloqueio motor: comparação com o bloqueio interescalênico El bloqueo selectivo de los nervios supraescapular y axilar promueve una analgesia satisfactoria y un menor grado de bloqueo motor: comparación con el bloqueo interescalénico Selective suprascapular and axillary nerve block provides adequate analgesia and minimal motor block: comparison with interscalene block

    Directory of Open Access Journals (Sweden)

    Patrícia Falcão Pitombo

    2013-02-01

    . El objetivo de este estudio fue comparar el bloqueo de los nervios supraescapular y axilar en las cirugías artroscópicas de hombro con el abordaje interescalénico del plexo braquial. MÉTODO: Sesenta y ocho pacientes fueron ubicados en dos grupos de 34, de acuerdo con la técnica utilizada: grupo Interescalénico (GI y grupo selectivo (GS, siendo ambos abordajes realizados con neuroestimulador. En el GI, y después de la respuesta motora adecuada, se inyectaron 30 mL de levopubivacaina en exceso enantiomérico de un 50% al 0,33% con adrenalina 1:200.000. En el GS, y después de la respuesta motora del nervio supraescapular y axilar, se inyectaron 15 mL de la misma sustancia en cada nervio. Enseguida se realizó la anestesia general. Las variables que se evaluaron fueron: tiempo para la realización de los bloqueos, analgesia, consumo de opioide, bloqueo motor, estabilidad cardiocirculatoria, satisfacción y aceptabilidad por parte del paciente. RESULTADOS: El tiempo para la ejecución del bloqueo interescalénico fue significativamente menor que para la realización del bloqueo selectivo. La analgesia fue significativamente mayor en el postoperatorio inmediato en el GI y en el postoperatorio tardío en el GS. El consumo de morfina fue significativamente mayor en la primera hora en el GS. El bloqueo motor fue significativamente menor en el GS. La estabilidad cardiocirculatoria, satisfacción y aceptabilidad de la técnica por el paciente no fueron diferentes entre los grupos. Ocurrió un fallo en el GI y dos en el GS. CONCLUSIONES: Ambas técnicas son seguras y eficaces con el mismo grado de satisfacción y de aceptabilidad. El bloqueo selectivo de ambos nervios presentó una analgesia satisfactoria, con la ventaja de proporcionar un bloqueo motor restringido al hombro.BACKGROUND AND OBJECTIVE: Shoulder arthroscopic surgeries evolve with intense postoperative pain. Several analgesic techniques have been advocated. The aim of this study was to compare suprascapular

  3. AngularJS testing cookbook

    CERN Document Server

    Bailey, Simon

    2015-01-01

    This book is intended for developers who have an understanding of the basic principles behind both AngularJS and test-driven development. You, as a developer, are interested in eliminating the fear related to either introducing tests to an existing codebase or starting out testing on a fresh AngularJS application. If you're a team leader or part of a QA team with the responsibility of ensuring full test coverage of an application, then this book is ideal for you to comprehend the full testing scope required by your developers. Whether you're new to or are well versed with AngularJS, this book

  4. Lidar Orbital Angular Momentum Sensor

    Data.gov (United States)

    National Aeronautics and Space Administration — The recognition in recent decades that electromagnetic fields have angular momentum (AM) in the form of not only polarization (or spin AM) but also orbital (OAM) has...

  5. Angular momentum from tidal torques

    International Nuclear Information System (INIS)

    Barnes, J.; Efstathiou, G.; Cambridge Univ., England)

    1987-01-01

    The origin of the angular momentum of bound objects in large N-body simulations is studied using three sets of models. One model with white-noise initial conditions is analyzed as well as two in which the initial conditions have more power on large scales, as predicted in models with cold dark matter. The growth and distribution of angular momentum in individual objects is studied and it is found that the specific angular momentum distribution of bound clumps increases in a near linear fashion with radius while the orientation of the angular momentum in the inner high-density regions is often poorly correlated with that of the outer parts. It is also found that the dimensionless spin parameter is insensitive to the initial perturbation spectrum and has a median value of about 0.05. 61 references

  6. Plasmons with orbital angular momentum

    International Nuclear Information System (INIS)

    Mendonca, J. T.; Ali, S.; Thide, B.

    2009-01-01

    Electron plasma waves carrying orbital angular momentum are investigated in an unmagnetized collisionless plasma composed of inertial electrons and static ions. For this purpose, the usual plasmon dispersion relation is employed to derive an approximate paraxial equation. The latter is analyzed with a Gaussian beam solution. For a finite angular momentum associated with the plasmon, Laguerre-Gaussian (LG) solutions are employed for solving the electrostatic potential problem which gives approximate solution and is valid for plasmon beams in the paraxial approximation. The LG potential determines the electric field components and energy flux of plasmons with finite angular momentum. Numerical illustrations show that the radial and angular mode numbers strongly modify the profiles of the LG potential.

  7. Rectilinear Graphs and Angular Resolution

    NARCIS (Netherlands)

    Bodlaender, H.L.; Tel, G.

    2003-01-01

    In this note we show that a planar graph with angular resolution at least π/2 can be drawn with all angles an integer multiple of π/2, that is, in a rectilinear manner. Moreover, we show that for d ≠ 4, d › 2, having an angular resolution of 2π/d does not imply that the graph can be drawn with all

  8. Uncertainty principle for angular position and angular momentum

    International Nuclear Information System (INIS)

    Franke-Arnold, Sonja; Barnett, Stephen M; Yao, Eric; Leach, Jonathan; Courtial, Johannes; Padgett, Miles

    2004-01-01

    The uncertainty principle places fundamental limits on the accuracy with which we are able to measure the values of different physical quantities (Heisenberg 1949 The Physical Principles of the Quantum Theory (New York: Dover); Robertson 1929 Phys. Rev. 34 127). This has profound effects not only on the microscopic but also on the macroscopic level of physical systems. The most familiar form of the uncertainty principle relates the uncertainties in position and linear momentum. Other manifestations include those relating uncertainty in energy to uncertainty in time duration, phase of an electromagnetic field to photon number and angular position to angular momentum (Vaccaro and Pegg 1990 J. Mod. Opt. 37 17; Barnett and Pegg 1990 Phys. Rev. A 41 3427). In this paper, we report the first observation of the last of these uncertainty relations and derive the associated states that satisfy the equality in the uncertainty relation. We confirm the form of these states by detailed measurement of the angular momentum of a light beam after passage through an appropriate angular aperture. The angular uncertainty principle applies to all physical systems and is particularly important for systems with cylindrical symmetry

  9. Edema hemorrágico agudo da infância Infantile acute hemorrhagic edema

    Directory of Open Access Journals (Sweden)

    Júlio César Gomes Silveira

    2006-10-01

    Full Text Available O edema hemorrágico agudo da infância é uma vasculite leucocitoclástica rara que acomete crianças com menos de dois anos de idade. A doença tem curso benigno, geralmente sem complicações ou recidivas. Descreve-se um caso em criança de um ano e cinco meses de idade cujos achados clínicos e histopatológicos são típicos do edema agudo hemorrágico da infância.Infantile acute hemorrhagic edema is a rare leukocytoclastic vasculitis that affects children under 2 years of age. The disease has a benign outcome usually with no complications or recurrence. We report the case of a 17-month-old girl with clinical and histopathological findings that are typical of infantile acute hemorrhagic edema.

  10. Complicaciones mecánicas del infarto agudo de miocardio: aunque infrecuentes, potencialmente letales

    Directory of Open Access Journals (Sweden)

    Jerson Quitian Moreno

    2017-09-01

    Full Text Available Aunque la incidencia de complicaciones mecánicas en el infarto agudo de miocardio ha descendido después de la era de la intervención coronaria percutánea, la mortalidad sigue siendo significativa. La ruptura septal ventricular, la regurgitación mitral aguda y la ruptura de la pared libre del ventrículo izquierdo conforman el espectro de complicaciones mecánicas posteriores al infarto agudo de miocardio. La reparación quirúrgica es el pilar del tratamiento; sin embargo, como puente para la cirugía, el manejo médico permite estabilizar al paciente.

  11. Síndromes coronarios agudos: epidemiología y diagnóstico

    Directory of Open Access Journals (Sweden)

    Carlos A. Cassiani M.

    2009-01-01

    Full Text Available Los síndromes coronarios agudos son un problema mayor de salud pública en todo el mundo. El síndrome coronario agudo (SCA incluye infarto agudo de miocardio (IAM, con o sin elevación del ST y la angina inestable. La incidencia anual de IAM es 565.000 nuevos eventos y 300.000 ataques recurrentes cada año. Los factores de riesgo para enfermedad cardíaca isquémica (ECI incluyen: tabaquismo, niveles elevados de lípidos séricos, hipertensión arterial, diabetes mellitus, obesidad mórbida, sedentarismo, bajo consumo diario de frutas y vegetales, consumo problemático de alcohol e índice psicosocial. La evaluación inicial de un SCA debe enfocarse en el disconfort toráxico, signos y síntomas asociados y factores de riesgo para SCA. Los marcadores biológicos de lesión miocárdica hoy no son fundamentales para decidir el manejo inicial, aunque han contribuido a una mayor sensibilidad del abordaje diagnóstico y aportan datos para el pronóstico de los pacientes.

  12. FRACASO RENAL AGUDO EN EL PACIENTE ONCOLOGICO. ANALISIS CLINICO Y PRONOSTICO.

    Directory of Open Access Journals (Sweden)

    Purroy A,

    2004-01-01

    Full Text Available RESUMEN: El fracaso renal agudo es un problema frecuente en el paciente oncológico, que plantea limitaciones en el pronóstico y en el planteamiento terapeútico. El desarrollo de registros de pacientes oncológicos con fracaso renal agudo permite analizar el perfil clínico y plantear aspectos a desarrollar desde el punto de vista terapeútico y sobre todo preventivo. El empleo de determinados índices pronósticos como el ISI (Liaño o el de fallo multiorgánico permite evaluar mejor este perfil clínico. En nuestra experiencia el fracaso renal agudo en el paciente oncológico es una complicación frecuente y relacionada con el proceso de base. Mediante este registro de pacientes hemos identificado un perfil clínico de alto riesgo consistente en un paciente con un fallo renal asociado a un proceso infeccioso, con insuficiencia respiratoria, oligúrico y con una puntuación elevada de esos índices pronósticos.

  13. Instant AngularJS starter

    CERN Document Server

    Menard, Dan

    2013-01-01

    Get to grips with a new technology, understand what it is and what it can do for you, and then get to work with the most important features and tasks. This book is written in an easytoread style, with a strong emphasis on realworld, practical examples. Stepbystep explanations are provided for performing important tasks.This book is for web developers familiar with JavascriptIt doesn't cover the history of AngularJS, and it's not a pitch to convince you that AngularJS is the best framework on the entire web. It's a guide to help you learn everything you need to know about AngularJS in as few pa

  14. Automated Angular Momentum Recoupling Algebra

    Science.gov (United States)

    Williams, H. T.; Silbar, Richard R.

    1992-04-01

    We present a set of heuristic rules for algebraic solution of angular momentum recoupling problems. The general problem reduces to that of finding an optimal path from one binary tree (representing the angular momentum coupling scheme for the reduced matrix element) to another (representing the sub-integrals and spin sums to be done). The method lends itself to implementation on a microcomputer, and we have developed such an implementation using a dialect of LISP. We describe both how our code, called RACAH, works and how it appears to the user. We illustrate the use of RACAH for several transition and scattering amplitude matrix elements occurring in atomic, nuclear, and particle physics.

  15. Bloqueo electrónico de la hebilla del cinturón de seguridad con detección del correcto abrochado

    OpenAIRE

    Prevosti Vives, Montserrat

    2011-01-01

    Impulsado por la problemática actual en el campo de la automoción, concretamente en el mal uso de los sistemas de retención de pasajeros, el presente proyecto consiste en el desarrollo de una idea, la investigación de su novedad, el análisis y estrategia de sus alternativas, el diseño de la solución, el cumplimiento de la normativa correspondiente y la redacción de una patente de la invención. La evolución de la idea nace con el concepto de un bloqueo electrónico de la hebilla ...

  16. Aplicación de las escalas de estratificación del riesgo en el diagnóstico de los síndromes coronarios agudos

    Directory of Open Access Journals (Sweden)

    John Jaime Sprockel Díaz

    2017-09-01

    Conclusiones: En una población de pacientes con alta probabilidad para el síndrome coronario agudo, las escalas HEART y TIMI mostraron una mayor capacidad para discriminar el diagnóstico del síndrome coronario agudo.

  17. Bloqueo aurículo-ventricular familiar progresivo tipo I: descripción clínica de una familia Progressive familial atrio-ventricular block type I: clinical description of a family

    Directory of Open Access Journals (Sweden)

    Guillermo Mora

    2011-10-01

    Full Text Available Se presenta el caso de una familia con bloqueo aurículo-ventricular, que compromete varias generaciones, con herencia mendeliana autosómica dominante, que afecta de manera progresiva el sistema de conducción cardiaco llevando a síncope y muerte súbita en edades tempranas. Esta entidad corresponde al bloqueo familiar cardiaco progresivo tipo I, descrito principalmente en Suráfrica. El tratamiento con marcapaso definitivo fue exitoso.We present the case of a family with atrio-ventricular block that involves several generations, with dominant autosomal mendelian inheritance that progressively affects the cardiac conduction system leading to syncope and sudden death in early life. This entity corresponds to progressive familial atrio-ventricular block type I, described mainly in South Africa . Treatment with permanent pacemaker therapy was successful.

  18. On Dunkl angular momenta algebra

    Energy Technology Data Exchange (ETDEWEB)

    Feigin, Misha [School of Mathematics and Statistics, University of Glasgow,15 University Gardens, Glasgow G12 8QW (United Kingdom); Hakobyan, Tigran [Yerevan State University,1 Alex Manoogian, 0025 Yerevan (Armenia); Tomsk Polytechnic University,Lenin Ave. 30, 634050 Tomsk (Russian Federation)

    2015-11-17

    We consider the quantum angular momentum generators, deformed by means of the Dunkl operators. Together with the reflection operators they generate a subalgebra in the rational Cherednik algebra associated with a finite real reflection group. We find all the defining relations of the algebra, which appear to be quadratic, and we show that the algebra is of Poincaré-Birkhoff-Witt (PBW) type. We show that this algebra contains the angular part of the Calogero-Moser Hamiltonian and that together with constants it generates the centre of the algebra. We also consider the gl(N) version of the subalgebra of the rational Cherednik algebra and show that it is a non-homogeneous quadratic algebra of PBW type as well. In this case the central generator can be identified with the usual Calogero-Moser Hamiltonian associated with the Coxeter group in the harmonic confinement.

  19. Phonons with orbital angular momentum

    International Nuclear Information System (INIS)

    Ayub, M. K.; Ali, S.; Mendonca, J. T.

    2011-01-01

    Ion accoustic waves or phonon modes are studied with orbital angular momentum (OAM) in an unmagnetized collissionless uniform plasma, whose constituents are the Boltzmann electrons and inertial ions. For this purpose, we have employed the fluid equations to obtain a paraxial equation in terms of ion density perturbations and discussed its Gaussian beam and Laguerre-Gauss (LG) beam solutions. Furthermore, an approximate solution for the electrostatic potential problem is presented, allowing to express the components of the electric field in terms of LG potential perturbations. The energy flux due to phonons is also calculated and the corresponding OAM is derived. Numerically, it is shown that the parameters such as azimuthal angle, radial and angular mode numbers, and beam waist, strongly modify the profiles of the phonon LG potential. The present results should be helpful in understanding the phonon mode excitations produced by Brillouin backscattering of laser beams in a uniform plasma.

  20. Angular momentum in QGP holography

    Directory of Open Access Journals (Sweden)

    Brett McInnes

    2014-10-01

    Full Text Available The quark chemical potential is one of the fundamental parameters describing the quark–gluon plasma produced by sufficiently energetic heavy-ion collisions. It is not large at the extremely high temperatures probed by the LHC, but it plays a key role in discussions of the beam energy scan programmes at the RHIC and other facilities. On the other hand, collisions at such energies typically (that is, in peripheral collisions give rise to very high values of the angular momentum density. Here we explain that holographic estimates of the quark chemical potential of a rotating sample of plasma can be very considerably improved by taking the angular momentum into account.

  1. Frecuencia de infección por VIH en pacientes con episodio agudo de herpes zoster

    Directory of Open Access Journals (Sweden)

    Susana Lazarte Heraud

    2005-01-01

    Full Text Available Objetivo: Evaluar la frecuencia de infección por VIH en pacientes que consultan por episodio agudo de herpes zoster. Material y Métodos: Se incluyeron a todos los pacientes entre 18 y 49 años, atendidos entre setiembre del 2001 y enero del 2003 en el Departamento de Enfermedades Infecciosas, Tropicales y Dermatológicas del Hospital Nacional Cayetano Heredia, por un cuadro agudo de herpes zoster, diagnosticado clínicamente. Los criterios de inclusión fueron: status VIH desconocido tanto del paciente como de su pareja; que no presentaran alguna complicación neurológica o presentación atípica de zoster y que no tuvieran signos ni síntomas compatibles con infección por VIH (muguet oral, diarrea crónica, síndrome de desgaste, etc.. Previa firma de consentimiento informado, se tomó muestra de sangre para prueba de ELISA para VIH1. A todos los pacientes con resultado positivo se les realizó western blot. Resultados: Veintiún pacientes cumplieron los criterios del estudio, 14 varones y 7 mujeres. Cinco pacientes (23,8% fueron VIH positivos. De éstos, 4 fueron varones (4/14 y 1 mujer (1/7. No se encontró diferencias significativas en cuanto a la conducta sexual de riesgo. Conclusiones: Se encuentra un porcentaje elevado de infección por VIH en adultos jóvenes que consultan en un hospital general por un cuadro agudo de herpes zoster, sin ningún otro signo ni síntoma de inmunosupresión, independientemente de conductas sexuales de riesgo. Nuestro hallazgo justifica un despistaje de VIH en adultos jóvenes con herpes zoster.

  2. AngularJS test-driven development

    CERN Document Server

    Chaplin, Tim

    2015-01-01

    This book is for developers who want to learn about AngularJS development by applying testing techniques. You are assumed to have a basic knowledge and understanding of HTML, JavaScript, and AngularJS.

  3. El infarto agudo de miocardio, un problema de salud pública

    OpenAIRE

    Alberto Caccavo

    2010-01-01

    RESUMENEl infarto agudo de miocardio (IAM) es una causa importante de muerte en la Argentina. Lamortalidad intrahospitalaria del IAM en la actualidad es de aproximadamente el 10%, almenos en los centros que participan en registros.Su tratamiento está orientado a la reperfusión de la arteria ocluida con angioplastia primariao trombolíticos. Sin embargo, sólo un pequeño número de hospitales disponen deangioplastia primaria y reciben trombolíticos muchos menos pacientes que los que los requieren...

  4. EFECTO AGUDO DEL EJERCICIO FISICO EN LA INTELIGENCIA Y LA MEMORIA EN HOMBRES, SEGUN LA EDAD

    OpenAIRE

    Yorleny Alfaro Chavarría; Wálter Salazar Rojas

    2001-01-01

    Con muy diversas investigaciones se han demostrado los efectos agudos del ejercicio físico en los procesos cognitivos (memoria, inteligencia, tiempo de reacción, creatividad, etc.) según la edad. Sin embargo, gran cantidad de variables se ven involucradas en los diferentes tratamientos. Es, por esto, que se pretendió realizar una investigación específica y homogénea, de manera que los cambios obtenidos en la inteligencia y la memoria en las diferentes edades se deban al tratamiento en sí, y n...

  5. Actualización en el enfoque y tratamiento del síndrome coronario agudo

    OpenAIRE

    López Fernández, Concepción

    2012-01-01

    Las enfermedades cardiovasculares (ECV) son una de las principales causas de muerte en los países desarrollados. El tratamiento del síndrome coronario agudo (SCA) ha mejorado considerablemente en los últimos años. El siguiente trabajo tiene como objetivos: 1. Revisar el papel de los principales factores de riesgo, la actualización en la clasificación del SCA y los principales conceptos de fisiopatología, clínica, diagnóstico y complicaciones. 2. Actualizar los princip...

  6. ILCOR: manejo inicial del Síndrome Coronario Agudo: Revisión y cambios

    OpenAIRE

    Paz Martín, Daniel

    2016-01-01

    El término Síndrome Coronario Agudo (SCA) engloba tres entidades diferentes de las manifestaciones agudas de la enfermedad coronaria:  *             Infarto de miocardio con elevación del ST (IAMCEST) *             Infarto de miocardio sin elevación del ST (IAMSEST) *             Angina inestable (AI)....

  7. EJERCICIO Y LA DETECCION DEL MAL AGUDO DE MONTAÑA GRAVE

    OpenAIRE

    Garófoli, Adrián; Montoya, Paola; Elías, Carlos; Benzo, Roberto

    2010-01-01

    El Mal Agudo de Montaña (MAM) es un conjunto de síntomas inespecíficos padecidos por sujetos que ascienden rápidamente desde baja a alta altura sin adecuada aclimatación. Usualmente es autolimitado, pero las formas graves (edema pulmonar y cerebral) pueden causar la muerte. La hipoxemia exagerada en reposo está relacionada con el desarrollo de MAM pero su valor predictivo es limitado. Dado que el ejercicio en altura se acompaña de mayor hipoxemia y síntomas, postulamos el valor predictivo de ...

  8. Fracaso renal agudo en el anciano : importancia de la prescripción de medicamentos

    OpenAIRE

    García Estrada, María Luz

    2015-01-01

    El fracaso renal agudo (FRA) es un trastorno frecuente en los ancianos y se define como el deterioro brusco de la función renal previamente normal. Su elevada incidencia se debe a varios factores que hacen a este grupo poblacional más susceptible al proceso como son: los cambios renales fisiológicos provocados por el propio envejecimiento, mayor exposición a la polifarmacia, menor capacidad de metabolización de fármacos y presencia de enfermedades sistémicas que contribuyen al deterioro de la...

  9. Diagnóstico por imagem do tromboembolismo pulmonar agudo Imaging of acute pulmonary thromboembolism

    Directory of Open Access Journals (Sweden)

    C. Isabela S. Silva

    2004-10-01

    Full Text Available O diagnóstico do tromboembolismo pulmonar agudo é baseado na probabilidade clínica, uso do dímero D (quando disponível e na avaliação por imagem. Os principais métodos de imagem utilizados no diagnóstico são representados por cintilografia ventilação-perfusão, angiografia pulmonar e tomografia computadorizada (TC. Na última década vários estudos têm demonstrado que a TC espiral apresenta elevada sensibilidade e especificidade no diagnóstico de tromboembolismo pulmonar agudo. Uma melhor avaliação das artérias pulmonares tornou-se possível com a recente introdução dos equipamentos de TC espirais com multidetectores. Vários pesquisadores têm sugerido que a angiografia pulmonar por TC espiral deve substituir a cintilografia na avaliação de pacientes com suspeita clinica de tromboembolismo pulmonar agudo. Os autores discutem os principais métodos de imagem utilizados no diagnóstico de tromboembolismo pulmonar agudo enfatizando o papel da TC espiral.The diagnosis of acute pulmonary thromboembolism is based on the clinical probability, use of D-dimer (when available and imaging. The main imaging modalities used in the diagnosis are ventilation-perfusion (V/Q, scintigraphy, angiography, and computed tomography (CT. In the last decade several studies have demonstrated that spiral CT has a high sensitivity and specificity in the diagnosis of acute pulmonary thromboembolism. The evaluation of the pulmonary arteries has further improved with the recent introduction of multidetector spiral CT scanners. Various investigators have suggested that spiral CT pulmonary angiography should replace scintigraphy in the assessment of patients whose symptoms are suggestive of acute PE. This article discusses the role of the various imaging modalities in the diagnosis of acute pulmonary thromboembolism with emphasis on the role of spiral CT.

  10. Miocarditis de células gigantes que simula un infarto agudo de miocardio

    Directory of Open Access Journals (Sweden)

    Andrea Zappi

    2009-01-01

    Full Text Available La miocarditis de células gigantes (MCG es una entidad rara, de causa desconocida, de probable etiología autoinmune. Puede presentarse como insuficiencia cardíaca refractaria, asociarse con arritmias ventriculares y en otras ocasiones simular un infarto agudo de miocardio. Su pronóstico con frecuencia es ominoso, salvo que se realicen tratamiento inmunosupresor o trasplante cardíaco, este último con elevada recurrencia.REV ARGENT CARDIOL 2009;77:60-62.

  11. Factores relacionados con la mortalidad intrahospitalaria en el infarto agudo del miocardio

    Directory of Open Access Journals (Sweden)

    Yanier Coll Muñoz

    2012-09-01

    Full Text Available Fundamento: la identificación de los factores relacionados con la mortalidad en el infarto agudo del miocardio representa un eslabón primordial en la evaluación inicial de los pacientes. Objetivo: identificar los factores relacionados con la mortalidad intrahospitalaria de los pacientes con infarto agudo del miocardio, ingresados en la Unidad de Cuidados Intensivos Coronarios de Cienfuegos durante el año 2010. Método: se realizó un estudio de serie de casos, que incluyó 241 pacientes con diagnóstico de infarto agudo del miocardio, ingresados en la Unidad de Cuidados Intensivos Coronarios del Hospital General Universitario Dr. Gustavo Aldereguía Lima de Cienfuegos, en el año 2010. Las variables que se analizaron fueron: edad, sexo, antecedentes patológicos personales, tipo de infarto agudo del miocardio (según electrocardiograma y localización topográfica, frecuencia cardiaca y tensión arterial al ingreso, clasificación de la insuficiencia cardiaca según Killip Kimball, creatinina, glicemia, colesterol total, triglicéridos, CPK-MB, y eventos adversos cardiovasculares durante su estadía hospitalaria. Resultados: la edad media de los pacientes estudiados fue de 65,6 años, con predominio del sexo masculino. La hipertensión arterial, el tabaquismo y el infarto miocárdico previo fueron los antecedentes de mayor interés, predominan los pacientes sin insuficiencia cardiaca y fracción de eyección conservada. Los eventos adversos cardiovasculares más frecuentes fueron: la angina post-infarto, arritmias ventriculares malignas y el choque cardiogénico. Conclusiones: se encontró relación significativa con la mortalidad para la edad avanzada (>70 años, taquicardia, glicemia ≥7 mmol/l al ingreso, y la presentación de arritmias ventriculares y choque cardiogénico durante la evolución intrahospitalaria.

  12. Angular Momentum of Topologically Structured Darkness.

    Science.gov (United States)

    Alperin, Samuel N; Siemens, Mark E

    2017-11-17

    We theoretically analyze and experimentally measure the extrinsic angular momentum contribution of topologically structured darkness found within fractional vortex beams, and show that this structured darkness can be explained by evanescent waves at phase discontinuities in the generating optic. We also demonstrate the first direct measurement of the intrinsic orbital angular momentum of light with both intrinsic and extrinsic angular momentum, and explain why the total orbital angular momenta of fractional vortices do not match the winding number of their generating phases.

  13. Predictores de mortalidad a los seis meses del alta de una Unidad Geriátrica de Agudos, 2016

    OpenAIRE

    Tuesta-Nole, Juan Rodrigo; Hospital Nacional Guillermo Almenara Irigoyen. Lima, Perú.; Cieza-Macedo, Edwin César; Hospital Nacional Guillermo Almenara Irigoyen. Lima, Perú.; Cieza-Macedo, Edwin César; Hospital Nacional Guillermo Almenara Irigoyen. Lima, Perú.

    2017-01-01

    Objetivo: Determinar las variables de la Valoración Geriátrica Integral (VGI), predictoras de mortalidad a los seis meses del alta de pacientes hospitalizados en la Unidad Geriátrica de Agudos (UGA) del Hospital Nacional Guillermo Almenara Irigoyen.Materiales y métodos: Se realizó un estudio observacional, prospectivo, longitudinal en la Unidad Geriátrica de Agudos del Hospital Nacional Guillermo Almenara Irigoyen (HNGAI) durante julio de 2015 a enero de 2016. Se recogieron las variables (car...

  14. AngularJS web application development

    CERN Document Server

    Darwin, Peter Bacon

    2013-01-01

    The book will be a step-by-step guide showing the readers how to build a complete web app with AngularJSJavaScript developers who want to learn AngularJS for developing web apps. Knowledge of JavaScript and HTML is expected. No knowledge of AngularJS is required.

  15. Optical angular momentum in classical electrodynamics

    Science.gov (United States)

    Mansuripur, Masud

    2017-06-01

    Invoking Maxwell’s classical equations in conjunction with expressions for the electromagnetic (EM) energy, momentum, force, and torque, we use a few simple examples to demonstrate the nature of the EM angular momentum. The energy and the angular momentum of an EM field will be shown to have an intimate relationship; a source radiating EM angular momentum will, of necessity, pick up an equal but opposite amount of mechanical angular momentum; and the spin and orbital angular momenta of the EM field, when absorbed by a small particle, will be seen to elicit different responses from the particle.

  16. Dependency injection with AngularJS

    CERN Document Server

    Knol, Alex

    2013-01-01

    This book is a practical, hands-on approach to using dependency injection and implementing test-driven development using AngularJS. Dependency Injection with AngularJS is aimed at developers who are aware of AngularJS but need to get started with using it in real life applications. Also, developers who want to get into test-driven development with AngularJS can use this book as practical guide. Even if you know about dependency injection, it can serve as a good reference on how it is used within AngularJS. Readers are expected to have some experience with JavaScript.

  17. Hiperglucemia en el síndrome coronario agudo: informe científico multidisciplinario

    Directory of Open Access Journals (Sweden)

    Patricia Blanco

    2012-04-01

    Full Text Available La hiperglucemia con o sin diabetes preexistente es un hallazgo frecuente en pacientes que cursan un síndrome coronario agudo. Estudios previos han demostrado que la hiperglucemia es altamente prevalente y se asocia a un mayor riesgo de muerte y complicaciones hospitalarias. Los mecanismos fisiopatológicos mediante los cuales la hiperglucemia provoca resultados adversos no son claros, y se desconoce si es un marcador de eventos o su causa. Los efectos perjudiciales de la hiperglucemia en el sistema cardiovascular son múltiples, y el control de los niveles de glucosa con insulina parece mejorar el pronóstico en estos pacientes. Se han desarrollado numerosos protocolos para el control de glucemia que demostraron ser seguros y efectivos. En una iniciativa originada en el Consejo de Emergencias de la Sociedad Argentina de Cardiología, se convocó a expertos de nuestro medio con el propósito de debatir estrategias para el control de la glucemia en pacientes que cursan un síndrome coronario agudo. Este documento refleja lo discutido en este evento académico con la intención de resumir los principales aspectos del control de la glucemia y ofrecer recomendaciones generales de tratamiento en la Unidad Coronaria.

  18. Bloqueo aurículo-ventricular de primer grado en tirotoxicosis aguda First degree atrio-ventricular block in acute thyrotoxicosis

    Directory of Open Access Journals (Sweden)

    Antonio R. Vilches

    2004-02-01

    Full Text Available El cuadro clínico de la tirotoxicosis incluye síntomas cardiovasculares variados. La taquicardia sinusal es el trastorno electrocardiográfico más frecuente y los trastornos de conducción son extremadamente raros como modo de presentación. Comunicamos un caso de bloqueo aurículo-ventricular de primer grado en una paciente con hipertiroidismo recién diagnosticado y que comenzó días antes de la consulta con un cuadro general inespecífico. Su evaluación ulterior demostró que se trataba de una tirotoxicosis aguda autoinmune, y su tratamiento con metimazol corrigió el trastorno totalmente. Se discuten los mecanismos fisiopatológicos involucrados y las implicancias clínicas desde el punto de vista del internista.Thyrotoxicosis may present with a variety of cardiovascular symptoms. Sinus tachycardia is the most frequently encountered electrocardiographic abnormality and conduction disturbances are extremely uncommon. We present a case of first degree atrio-ventricular block in a patient with newly diagnosed hyperthyroidism and discuss the underlying pathophysiological mechanisms and the clinical implications from the internist’s standpoint.

  19. Bloqueo mediático, redes sociales y malestar ciudadano. Para entender el movimiento español del 15-M

    Directory of Open Access Journals (Sweden)

    Xosé Ramón Rodríguez-Polo

    2013-01-01

    Full Text Available El movimiento del 15-M ha sido la movilización más importante que ha vivido España en los últimos años. En este trabajo proponemos analizar este fenómeno mediante el estudio de cuatro elementos que consideramos que presentan las claves para entender algunas de sus causas y el enorme respaldo social que alcanzó. Empleando el análisis secundario de datos abordamos el estudio de la situación de bloqueo del debate público, la incidencia política que facilitan los medios sociales, los colectivos activistas y el descontento de la ciudadanía española. Del análisis de la opinión pública se colige que el problema económico de la crisis derivó, por causa de su gestión, en un problema social, para transformarse finalmente en un problema político, manifestado en un clima de enorme descontento con la situación política y con el gobierno. La irrupción del 15-M hizo aflorar todo el malestar acumulado, convirtiendo un acto organizado por colectivos minoritarios en toda una marea ciudadana de repulsa.

  20. Angular Positioning Sensor for Space Mechanisms

    Science.gov (United States)

    Steiner, Nicolas; Chapuis, Dominique

    2013-09-01

    Angular position sensors are used on various rotating mechanisms such as solar array drive mechanisms, antenna pointing mechanisms, scientific instruments, motors or actuators.Now a days, potentiometers and encoders are mainly used for angular measurement purposes. Both of them have their own pros and cons.As alternative, Ruag Space Switzerland Nyon (RSSN) is developing and qualifying two innovative technologies of angular position sensors which offer easy implementation, medium to very high lifetime and high flexibility with regards to the output signal shape/type.The Brushed angular position sensor uses space qualified processes which are already flying on RSSN's sliprings for many years. A large variety of output signal shape can be implemented to fulfill customer requirements (digital, analog, customized, etc.).The contactless angular position sensor consists in a new radiation hard Application Specific Integrated Circuit (ASIC) based on the Hall effect and providing the angular position without complex processing algorithm.

  1. Terapia trombolítica e infarto agudo de miocardio en el Hospital Militar de Matanzas

    Directory of Open Access Journals (Sweden)

    Sandy F. Rodríguez Reyes

    2015-10-01

    Full Text Available Introducción: Las enfermedades del corazón constituyen la principal causa de muerte en Cuba.Objetivos: Identificar las características clínico-epidemiológicas de los pacientes con infarto agudo de miocardio y su vínculo con la trombólisis.Método: Estudio observacional descriptivo, de corte transversal, en el Hospital Militar de Matanzas, entre enero de 2011 y enero de 2013. El universo de estudio fue de 96 pacientes con diagnóstico clínico y electrocardiográfico de infarto agudo de miocardio con supradesnivel del segmento ST.Resultados: Existió predominio del sexo masculino (61,4 %, el grupo etario más afectado fue entre 65 y 74 años (39,6 %. La hipertensión arterial constituyó el principal factor de riesgo encontrado (71,9 %. En el 60,2 % de los pacientes que recibieron tratamiento trombolítico, el tiempo puerta-aguja fue entre los 30 y 60 minutos, y la mayoría de los casos [34 (35,4 %] arribaron al hospital entre las 3 y 6 horas del inicio de los síntomas. El alivio del dolor y el regreso del ST se presentaron en el 100 % de las trombólisis efectivas. La causa más frecuente de no trombólisis fue la evolución del episodio isquémico mayor a 12 horas, y falleció un 33,3 % de los pacientes que no recibieron tratamiento trombolítico.Conclusiones: Predominaron el sexo masculino, las edades entre 65 y 74 años, y la hipertensión arterial. La mayoría recibió trombólisis, con tiempo dolor-puerta entre 3 y 6 horas, y puerta-aguja entre 30 y 60 minutos. La complicación que más se presentó durante la trombólisis fue la hipotensión arterial y la causa más frecuente de no realización del procedimiento fue el tiempo dolor-puerta mayor a 12 horas, donde predominaron los fallecimientos. La trombólisis oportuna sigue siendo la principal herramienta para elevar la supervivencia de los pacientes con infarto agudo de miocardio en hospitales sin intervencionismo coronario percutáneo.

  2. Oral candidiasis and angular cheilitis.

    Science.gov (United States)

    Sharon, Victoria; Fazel, Nasim

    2010-01-01

    Candidiasis, an often encountered oral disease, has been increasing in frequency. Most commonly caused by the overgrowth of Candida albicans, oral candidiasis can be divided into several categories including acute and chronic forms, and angular cheilitis. Risk factors for the development of oral candidiasis include immunosuppression, wearing of dentures, pharmacotherapeutics, smoking, infancy and old age, endocrine dysfunction, and decreased salivation. Oral candidiasis may be asymptomatic. More frequently, however, it is physically uncomfortable, and the patient may complain of burning mouth, dysgeusia, dysphagia, anorexia, and weight loss, leading to nutritional deficiency and impaired quality of life. A plethora of antifungal treatments are available. The overall prognosis of oral candidiasis is good, and rarely is the condition life threatening with invasive or recalcitrant disease.

  3. Management of angular cheilitis for children

    Directory of Open Access Journals (Sweden)

    Fajriani Fajriani

    2016-06-01

    Full Text Available Angular cheilitis is one type of oral soft tissue disease that can occur in both children and adults, the condition is characterized by cracks and inflammation in both corners of the mouth. Although this disease does not cause severe disruption but quite disturbing activity and also one's physical appearance. Angular cheilitis light will disappear on their own over time.Severe conditions that can cause pain and bleading. aims to give feedback on peers about managment angular cheilitis in children.

  4. Resultados de la cirugía coronaria sin circulación extracorpórea en el contexto del infarto agudo de miocardio

    Directory of Open Access Journals (Sweden)

    Ali Ayaon-Albarrán

    2017-03-01

    Conclusiones: La cirugía coronaria sin circulación extracorpórea en el contexto del infarto agudo de miocardio es un procedimiento seguro, con resultados favorables a corto plazo y aceptables a largo plazo.

  5. Tumor seminomatoso no diagnóstico diferencial de abdome agudo

    Directory of Open Access Journals (Sweden)

    Carlos Renato Sales Bezerra

    2012-06-01

    Full Text Available Entre os tumores testiculares de células germinativas, o seminoma é o mais comum na população adulta. Apesar de ser o mais encontrado, o tumor seminomatoso acomete em menor frequência o trato gastrintestinal quando comparado ao não-seminoma. As manifestações metastáticas de tumores testiculares no trato gastrintestinal incluem obstrução intestinal, volvo, intussuscepção e hemorragia. O tratamento é basicamente cirúrgico, sendo indicada em alguns casos a realização de ciclos quimioterápicos. O objetivo deste artigo é descrever um caso de uma manifestação incomum de um tumor testicular seminomatoso em paciente adulto com acometimento do trato gastrointestinal, que se mostrou como etiologia possível para abdome agudo inflamatório.

  6. Hepatocarcinoma como causa de abdome agudo em adolescente: relato de caso

    Directory of Open Access Journals (Sweden)

    João Augusto dos Santos Martines

    2012-08-01

    Full Text Available O carcinoma hepatocelular (CHC é pouco prevalente nos países ocidentais, porém é um dos tumores mais freqüentes na Ásia e a quinta causa de câncer no mundo.É relatado um caso de adolescente do sexo feminino sem fatores de risco para um tumor extremamente agressivo, internada no Hospital Universitário da Universidade de São Paulo. A apresentação clínica foi de abdome agudo secundário a sangramento para cavidade peritoneal por ruptura do tumor evidenciado através de tomografia computorizada multidetectores (TCMD confirmado por laparotomia exploradora e biópsia hepática e tratada com rafia hemostática do parênquima hepático.

  7. Tratamiento del adulto mayor con síndrome coronario agudo

    Directory of Open Access Journals (Sweden)

    Carolina Pemberthy-López

    2016-11-01

    Full Text Available El adulto mayor se encuentra en una etapa de la vida con cambios fisiológicos importantes que posee repercusiones directas e indirectas sobre su estado clínico, es así como el enfoque diagnóstico y terapéutico de sus patologías debe ser abordado desde una perspectiva diferente, con consideraciones especiales para este grupo poblacional. Lamentablemente, este grupo no ha sido bien representado en los diferentes estudios y por tanto, es mucho lo que desconocemos; su comportamiento y la eficacia de las distintas terapias no están bien establecidos. Teniendo de referencia el síndrome coronario agudo como principal causa de mortalidad en pacientes mayores de 65 años de edad, abordaremos esta entidad desde la evidencia que nos aportan algunos de los registros más importantes al respecto en adultos mayores.

  8. Estreptoquinasa recombinante en pacientes con infarto agudo del miocardio. Cardiocentro de Camaguey, 2008

    Directory of Open Access Journals (Sweden)

    Héctor Mariño Cano

    2015-12-01

    Full Text Available Se realizó un estudio descriptivo longitudinal, con el objetivo de valorar la eficacia de la utilización de la Estreptoquinasa Recombinante en pacientes con Infarto Agudo de Miocardio (IMA en el Cardiocentro del Hospital Provincial Docente “Manuel Ascunce Doménech” en la provincia de Camagüey, en el período comprendido de enero a diciembre del 2008. El universo estuvo constituido por 200 pacientes, a los que se les diagnosticó Infarto Agudo de Miocardio y la muestra quedó formada por 80 pacientes que recibieron tratamiento trombolítico, las historias clínicas de los pacientes fueron la principal fuente de obtención de la información, utilizando  las  siguientes  variables: resultados criterio de perfusión, evolución clínica, criterio de reacciones adversas y la influencia que ejerce el tiempo puerta-aguja,  así como los cuidados de enfermería. Al terminar se observó que  el criterio de repercusión de mayor incidencia fue el eléctrico; la mayor cantidad de pacientes tuvieron buena evolución clínica; la hipotensión fue la reacción adversa más frecuente; el tiempo de puerta-aguja  que más incidió  fue el menor, de 3h; a todos los pacientes diagnosticados con infarto, que recibieron tratamiento trombolítico, se les  brindaron  cuidados de enfermería.

  9. Perfil clínico y manejo del síndrome coronario agudo

    Directory of Open Access Journals (Sweden)

    Yudelquis Ojeda Riquenes

    2015-11-01

    Full Text Available Se realizó un estudio descriptivo retrospectivo, para determinar el perfil clínico y el manejo del Síndrome Coronario Agudo (SCA en el centro diagnóstico integral “Los Arales”, en el período de enero de 2009 a mayo de 2010. El universo incluyó a 32 pacientes con SCA y la muestra a 29 pacientes, de los cuales 12 (41,4% tuvieron un SCA con elevación del ST (SCACEST, los restantes 17 (58,6% presentaron un síndrome coronario agudo sin elevación del ST (SCASEST. Los pacientes con SCACEST tenían menos antecedentes cardiovasculares y usaban menos medicamentos previos; presentaron mayor porcentaje de clase killip IV (8,3%, marcadores de necrosis (100% y alteraciones de la repolarización (100%. No se realizó trombolisis, solo un paciente fue remitido para realizar coronariografía e ICP (8,3%; se utilizó más la heparina (83,3% y aspirina (91,7%. Este grupo presentó más eventos arrítmicos, complicaciones y mortalidad precoz. Al alta se usó más aspirina (100% y beta bloqueadores (66,7% e IECA (66,7%.. Los pacientes con SCASEST tuvieron un mayor Killip II-III (17,6% y creatinina elevada (11,8%. Se usaron menos los antiplaquetarios y no se refirió para realizar procedimientos diagnósticos o terapéuticos.

  10. Variabilidad geográfica de las hospitalizaciones por infarto agudo al miocardio en Costa Rica

    Directory of Open Access Journals (Sweden)

    Melvin Morera Salas

    2014-01-01

    Full Text Available La presente investigación muestra los patrones geográficos de las hospitalizaciones por infarto agudo al miocardio en el seguro público de salud de Costa Rica en el trienio 2010-2012. Para el análisis geográfico por área de salud se utiliza un modelo bayesiano jerárquico espacial. Se estiman razones estandarizadas suavizadas y, como medida de precisión, la probabilidad de que cada área de salud registre un riesgo de hospitalización estadísticamente diferente al promedio nacional. En la determinación de presencia de autocorrelación espacial se utiliza el indicador de la I de Moran. La amplitud entre las variaciones observadas se estima mediante la razón interpercentil (percentil 95/percentil 5 y el coeficiente de variación. La tasa bruta de hospitalizaciones es de 5,8 por 10 mil habitantes en hombres y 2,6 / 10 mil en mujeres. Se registra un rango de variación de más de dos veces en las hospitalizaciones entre las áreas con mayores y menores egresos. Se presenta un patrón de bajas tasas de hospitalizaciones por infarto agudo al miocardio en áreas de salud fuera del Área Metropolitana, donde se encuentran los hospitales nacionales de mayor complejidad. Este elemento podría estar asociado a dificultades en el acceso de los servicios de hospitalización.

  11. Trastornos psiquiátricos frecuentes post infarto agudo al miocardio y su relación pronóstica. Revisión de la literatura.

    OpenAIRE

    Manuel Mallol Simmonds

    2017-01-01

    La enfermedad cardiovascular es la principal causa de muerte a nivel mundial. De ella, el Infarto Agudo al Miocardio (IAM) y el Accidente Cerebrovascular (AVC) se encuentran fuertemente asociados a los cambios ambientales y sociales del último tiempo, tales como aumento de ingesta de comida rápida, sedentarismo, tabaquismo, entre otros. Algunos trastornos psiquiátricos que aparecen a corto y largo plazo posterior al evento coronario agudo tienen una implicancia directa en la morbimortalidad c...

  12. Transverse and longitudinal angular momenta of light

    Energy Technology Data Exchange (ETDEWEB)

    Bliokh, Konstantin Y., E-mail: k.bliokh@gmail.com [Center for Emergent Matter Science, RIKEN, Wako-shi, Saitama 351-0198 (Japan); Nonlinear Physics Centre, RSPhysE, The Australian National University, Canberra, ACT 0200 (Australia); Nori, Franco [Center for Emergent Matter Science, RIKEN, Wako-shi, Saitama 351-0198 (Japan); Physics Department, University of Michigan, Ann Arbor, MI 48109-1040 (United States)

    2015-08-26

    We review basic physics and novel types of optical angular momentum. We start with a theoretical overview of momentum and angular momentum properties of generic optical fields, and discuss methods for their experimental measurements. In particular, we describe the well-known longitudinal (i.e., aligned with the mean momentum) spin and orbital angular momenta in polarized vortex beams. Then, we focus on the transverse (i.e., orthogonal to the mean momentum) spin and orbital angular momenta, which were recently actively discussed in theory and observed in experiments. First, the recently-discovered transverse spin  angular momenta appear in various structured fields: evanescent waves, interference fields, and focused beams. We show that there are several kinds of transverse spin angular momentum, which differ strongly in their origins and physical properties. We describe extraordinary features of the transverse optical spins and overview recent experiments. In particular, the helicity-independent transverse spin inherent in edge evanescent waves offers robust spin–direction coupling at optical interfaces (the quantum spin Hall effect of light). Second, we overview the transverse orbital angular momenta of light, which can be both extrinsic and intrinsic. These two types of the transverse orbital angular momentum are produced by spatial shifts of the optical beams (e.g., in the spin Hall effect of light) and their Lorentz boosts, respectively. Our review is underpinned by a unified theory of the angular momentum of light based on the canonical momentum and spin densities, which avoids complications associated with the separation of spin and orbital angular momenta in the Poynting picture. It allows us to construct a comprehensive classification of all known optical angular momenta based on their key parameters and main physical properties.

  13. Angular momentum transfer in incomplete fusion

    Indian Academy of Sciences (India)

    fusion reactions. The angular momentum of the intermediate nucleus formed in incomplete fusion was deduced from the isomeric cross-section ratio by considering the statistical de- excitation of the incompletely fused composite nucleus. The data show that incomplete fusion is associated with angular momenta slightly ...

  14. Responsive web design with AngularJS

    CERN Document Server

    Patel, Sandeep Kumar

    2014-01-01

    If you are an AngularJS developer who wants to learn about responsive web application development, this book is ideal for you. Responsive Web Design with AngularJS is intended for web developers or designers with a basic knowledge of HTML, CSS, and JavaScript.

  15. Angular momentum transfer in incomplete fusion

    Indian Academy of Sciences (India)

    The angular momentum of the intermediate nucleus formed in incomplete fusion was deduced from the isomeric cross-section ratio by considering the statistical de-excitation of the incompletely fused composite nucleus. The data show that incomplete fusion is associated with angular momenta slightly smaller than critical ...

  16. Accelerated rotation with orbital angular momentum modes

    CSIR Research Space (South Africa)

    Schulze, C

    2015-04-01

    Full Text Available A 91, 043821 (2015) Accelerated rotation with orbital angular momentum modes Christian Schulze, Filippus S. Roux, Angela Dudley, Ronald Rop, Michael Duparr´e, and Andrew Forbes Abstract: We introduce a class of light field that angularly...

  17. Dijet angular distributions at D0

    International Nuclear Information System (INIS)

    Fatyga, M.K.

    1996-09-01

    Measurements of the dijet angular distributions are relatively insensitive to parton distribution functions and thus offer an excellent method of testing the LO and NLO predictions of perturbative QCD. The authors present measurements of the dijet angular distributions for |η| < 3.0 in p anti p collisions at √s = 1.8 TeV

  18. Experimental determination of high angular momentum states

    International Nuclear Information System (INIS)

    Barreto, J.L.V.

    1985-01-01

    The current knowledge of the atomic nucleus structure is summarized. A short abstract of the nuclear properties at high angular momentum and a more detailed description of the experimental methods used in the study of high angular momenta is made. (L.C.) [pt

  19. Concepts of radial and angular kinetic energies

    DEFF Research Database (Denmark)

    Dahl, Jens Peder; Schleich, W.P.

    2002-01-01

    We consider a general central-field system in D dimensions and show that the division of the kinetic energy into radial and angular parts proceeds differently in the wave-function picture and the Weyl-Wigner phase-space picture, Thus, the radial and angular kinetic energies are different quantities...

  20. Cardiomiopatía hipertrófica y síndrome de Wolff-Parkinson-White con bloqueo aurículo-ventricular completo. Una extraña asociación: Reporte de un caso Hypertrophic cardiomyopathy and Wolff-Parkinson-White Syndrome with complete auriculoventricular block. A strange association: Report of one case

    OpenAIRE

    Franco J Vallejo; Paula A Montaña; Carlos Vesga; Antonio Miranda; José E Citelli; Alberto Negrete; Efraín Gil

    2007-01-01

    Paciente masculino de 22 años quien ingresa por episodio de síncope. En el electrocardiograma se encuentra patrón de Wolff-Parkinson-White y signos de sobrecarga auricular e hipertrofia ventricular izquierda con bloqueo aurículo-ventricular completo. El ecocardiograma transtorácico es compatible con cardiomiopatía hipertrófica no obstructiva. Se lleva a estudio electrofisiológico donde se encuentra pre-excitación por vía accesoria y bloqueo aurículo-ventricular infrahisiano; se realiza ablaci...

  1. Perturbed angular correlations and distributions

    International Nuclear Information System (INIS)

    Makaryunas, K.

    1976-01-01

    The present index comprises original works and review papers on the perturbed angular correlations (PAC) and distributions (PAD). The articles published in the Soviet and foreign journals as well as the materials of conferences, monographs and collections published in the USSR and abroad, the preprints produced by various institutes and abstracts of disertations are included from 1948 up to 1973. The whole material compiled in this index is divided into three parts. Part one is a bibliographic index. All papers in this part are divided into three sections. Section one comprises the papers devoted to the theoretical works on PAC, review papers, monographs, materials of conferences. Section two deals with the works of methodical character where correlation spectrometers as well as the treatment of experimental data are described. In section three experimental works with concrete nuclei are compiled. Part two gives the characteristic of works performed with concrete nuclei. This part is presented in the form of the table in which the works are systematized according to the chemical elements and isotopes. The table shows the characteristics of the nuclear levels used in the investigations by PAC as well as brief characteristics of experiments and results obtained. Part three - appendix contains alphabetic index of the authors, the list of the used editions with the abbreviations of the titles of these editions. The lists indicating the dynamic of the quantity of works on PAC and the distribution according to the literature sources are also given

  2. Comparación de las técnicas anestésicas de bloqueo mandibular troncular convencional directa y Gow-Gates en exodoncia de molares mandibulares

    OpenAIRE

    Proaño de Casalino, Doris; Facultad de Estomatología, Universidad Peruana Cayetano Heredia. Lima,; Guillén Galarza, Manuel Fernando; Escuela de Estomatología. Universidad Nacional de Trujillo. Trujillo

    2014-01-01

    Se presenta una evaluación clínica para determinar si existen diferencias entre el bloqueo mandibularproducido por la técnica troncular convencional directa y la técnica Gow-Gates en pacientes quenecesitaron exodoncias mandibulares, considerando como indicadores: dolor a la penetración einyección anestésica, tiempo de aparición de los primeros síntomas de anestesia, territorioanestesiado a los 5, 10 y 15 minutos, penetración intravascular, anestesia del nervio Bucal Largoy resultado anestésic...

  3. Síndrome de Horner y bloqueo del plexo braquial ipsilateral en un caso de analgesia epidural para el trabajo del parto Horner´s sydrome and ipsilateral brachial plexus block during an epidural analgesia labour procedure

    OpenAIRE

    J. Avellanosa; J. Vera; P. Morillas; E. Gredilla; F. Gilsanz

    2006-01-01

    El Síndrome de Horner es una complicación de la anestesia epidural que aparece más frecuentemente en pacientes obstétricas debido a los cambios fisiológicos y anatómicos propios del embarazo; sin embargo, su incidencia es baja, y sólo se han descrito dos casos previos asociando un bloqueo del plexo braquial. Presentamos el caso de una gestante de 23 años que precisó analgesia epidural para el trabajo de parto. Tras comprobar la correcta colocación del catéter se administró una dosis inicial e...

  4. Riscos cardiovasculares do bloqueio androgênico Riesgos cardiovasculares del bloqueo androgénico Cardiovascular risks of androgen deprivation therapy

    Directory of Open Access Journals (Sweden)

    Adriano Freitas Ribeiro

    2010-09-01

    Full Text Available O adenocarcinoma de próstata é o câncer mais comum no sexo masculino após o câncer de pele. Entre as várias formas de tratamento do câncer de próstata, a terapia de bloqueio androgênico é uma modalidade consagrada nos pacientes com doença metastática ou localmente avançada, que provavelmente resulta em aumento de sobrevida. No entanto, o bloqueio androgênico é causador de uma série de consequências adversas. Complicações como osteoporose, disfunção sexual, ginecomastia, anemia e alterações na composição corporal são bem conhecidas. Recentemente, uma série de complicações metabólicas foi descrita como aumento da circunferência abdominal, resistência à insulina, hiperglicemia, diabete, dislipidemia e síndrome metabólica com consequente aumento do risco de eventos coronarianos e mortalidade cardiovascular nessa população específica. Este artigo de atualização apresenta uma revisão bibliográfica realizada no MEDLINE de toda literatura publicada em inglês no período de 1966 até junho de 2009, com as seguintes palavras-chave: androgen deprivation therapy, androgen supression therapy, hormone treatment, prostate cancer, metabolic syndrome e cardiovascular disease, no intuito de analisar quais seriam os reais riscos cardiovasculares da terapia de deprivação androgênica, também chamada bloqueio androgênico, nos pacientes com câncer de próstata.El adenocarcinoma de próstata es el cáncer más común en el sexo masculino después del cáncer de piel. Entre las varias formas de tratamiento del cáncer de próstata, la terapia de bloqueo androgénico es una modalidad consagrada en los pacientes con enfermedad metastásica o localmente avanzada, que probablemente resulta en aumento de sobrevida. Mientras tanto, el bloqueo androgénico es causante de una serie de consecuencias adversas. Complicaciones como osteoporosis, disfunción sexual, ginecomastia, anemia y alteraciones en la composición corporal son

  5. Asociación entre el síndrome coronario agudo y el consumo de antiinflamatorios no esteroideos

    Directory of Open Access Journals (Sweden)

    José Luis Sánchez Serrano

    2015-01-01

    Full Text Available Objetivos: Evaluar el impacto cardiovascular asociado al consumo de antiinflamatorios no esteroideos en un Área de Salud, estimando la asociación entre la prescripción previa de un antiinflamatorio no esteroideo al episodio de síndrome coronario agudo. Material y Métodos: Se realiza un estudio retrospectivo observacional de casos cruzados de 5 años de duración, del 1 de Enero de 2008 hasta el 31 de diciembre de 2012. Los pacientes en primer lugar fueron casos y controles (n=1.317 que tuvieron eventos cardiovasculares y fueron al servicio de Urgencias del Hospital por dicho motivo. Área de Salud de Alcázar de San Juan. Medida principal: Asociación del riesgo de sufrir un síndrome coronario agudo mediante el Odds Ratio con el consumo de antiinflamatorios no esteroideos. Resultados: La asociación entre el síndrome coronario agudo y el consumo de Antiinflamatorios fue positiva y significativa, (OR 1,42; IC95% 1,06-1,9. Esta asociación fue de mayor magnitud en pacientes con menor comorbilidad, Charlson ≤ 1 (OR 1,66; IC95% 1,15 - 2,40 frente a los de mayor comorbilidad, Charlson > 1 (OR 1,07; IC95% 0,65 - 1,76. Esta modificación de efecto se debió en parte al consumo concomitante de fármacos que previenen contra patologías cardiovasculares como los antiagregantes, anticoagulantes y estatinas. Conclusiones: El consumo de antiinflamatorios no esteroideos se ha asociado a un mayor riesgo de síndrome coronario agudo, por lo que es necesario realizar un seguimiento a los pacientes que consuman estos fármacos, no debiéndose tomar durante tiempos prolongados ni a dosis altas.

  6. Cambios electrocardiográficos múltiples en síndrome coronario agudo y enfermedad coronaria grave

    Directory of Open Access Journals (Sweden)

    Santiago Patiño G.

    2016-01-01

    Resultados y conclusiones: Las manifestaciones electrocardiográficas del síndrome coronario agudo y la enfermedad coronaria grave van más allá de los cambios en el segmento ST y la T; cambios en la onda P y en la morfología del QRS también son indicativos de mal pronóstico.

  7. Actividad inflamatoria en múltiples placas ateroscleróticas en pacientes fallecidos por infarto agudo de miocardio

    Directory of Open Access Journals (Sweden)

    Alejandro García Escudero

    2009-01-01

    Full Text Available IntroducciónEstudios clínicos y anatomopatológicos sugieren que los procesos inflamatorios tienen un papel importante en la inestabilidad de la placa aterosclerótica, dado que en pacientes con síndromes coronarios agudos se observan infiltrados inflamatorios difusos en las arterias coronarias.ObjetivosEvaluar y localizar la distribución de placas vulnerables e infiltrados inflamatorios en pacientes fallecidos por infarto agudo de miocardio.Material y métodosMediante microscopia óptica se estudiaron las arterias coronarias de 58 pacientes fallecidos por infarto de miocardio. En las arterias coronarias relacionadas con el infarto y en las no relacionadas se registraron las siguientes variables: presencia de trombo, rotura de placa, hemorragia intraplaca y presencia de infiltrado inflamatorio.ResultadosAl analizar las diferencias existentes entre las arterias responsables del infarto y en las no responsables se encontraron diferencias significativas con respecto a la presencia de trombo (69% versus 38%; p < 0,008 y de hemorragia intraplaca (69% versus 50%; p < 0,03. No se encontró una diferencia significativa entre la arteria responsable y la no responsable al evaluar la presencia de infiltrado inflamatorio en las placas ateroscleróticas (77% versus 71%; p = ns.ConclusiónEn el infarto agudo de miocardio se comprobó la presencia de actividad inflamatoria que afectaba a más de un vaso, con compromiso de otras arterias además de la responsable del infarto. Se detectó también accidente agudo de placa en más de una arteria coronaria.REV ARGENT CARDIOL 2009;77:81-87.

  8. Hematoma subdural agudo espontâneo e hemorragia intracerebral em paciente com microangiopatia trombótica gestacional

    Directory of Open Access Journals (Sweden)

    Sâmia Yasin Wayhs

    2013-06-01

    Full Text Available Pré-eclâmpsia, síndrome HELLP (hemólise, elevação de enzimas hepáticas e plaquetopenia e fígado gorduroso agudo da gestação são as principais causas de microangiopatia trombótica e disfunção hepática grave durante a gestação, representando um spectrum do mesmo processo patológico. Relatou-se aqui o caso de uma gestante com 35 semanas internada em unidade de terapia intensiva no pós-operatório imediato de cesariana por morte fetal, com náuseas, vômitos e icterícia. Diagnosticaram-se pré-eclâmpsia pós-parto e fígado gorduroso agudo da gestação. Houve evolução tardia com hematoma subdural agudo e hemorragia intracerebral, sendo realizado tratamento neurocirúrgico. A paciente foi a óbito por anemia hemolítica refratária, com sangramento espontâneo em múltiplos órgãos. Pré-eclâmpsia, síndrome HELLP e fígado gorduroso agudo da gestação são processos patológicos que podem se sobrepor e se associar a complicações potencialmente fatais, como a hemorragia intracraniana aqui descrita. Sua detecção e diagnóstico precoces são fundamentais para a instituição de manejo adequado e sucesso do tratamento.

  9. Inestabilidad en múltiples placas ateroescleróticas en pacientes fallecidos por infarto agudo de miocardio

    Directory of Open Access Journals (Sweden)

    Ricardo A. Sarmiento

    2011-08-01

    Full Text Available Los procesos inflamatorios en los síndromes coronarios agudos juegan un rol importante en la inestabilidad de la placa ateroesclerótica. Nuestro objetivo fue evaluar la presencia y distribución de placas vulnerables e infiltrados inflamatorios en pacientes fallecidos por infarto agudo de miocardio y su comparación con los hallazgos en pacientes fallecidos por cuadros no coronarios. Se analizaron los estudios anatomopatológicos de corazón de 68 pacientes fallecidos por infarto agudo de miocardio y 15 fallecidos por causa no coronaria. Se registró la presencia de trombo, hemorragia intraplaca, ruptura endotelial e infiltrado inflamatorio. Al evaluar los pacientes fallecidos por IAM, encontramos trombo en 73.5% de las arterias responsables del IAM y en 28.7% de las no responsables (p < 0.0001. La hemorragia intraplaca se halló en el 70.5% de las arterias responsables y en 39.7% de las no responsables, p < 0.0001; ruptura endotelial en el 29.4% de las arterias responsables y en 3.7% de las no responsables, p < 0.0001. No encontramos diferencias en la presencia de infiltrado inflamatorio (76.5% versus 68.4%. Comparando con los fallecidos por causas no coronarias, la presencia de trombo fue significativamente superior (73.5% vs. 13.3%; p < 0.0001, así como la de hemorragia intraplaca (70.5% vs. 0%; p < 0.0001 y de infiltrado inflamatorio en las placas ateroescleroticas (76.5% vs. 46.6%; p = 0.021. En los pacientes fallecidos por infarto agudo de miocardio se observa inestabilidad de placa y actividad inflamatoria, no sólo en la arteria responsable del infarto sino también en las arterias no responsables del infarto.

  10. DIAGNÓSTICO DE UN TROMBOEMBOLISMO PULMONAR AGUDO POR ANGIOTC / Diagnosis of acute pulmonary thomboembolism by CT angiography

    Directory of Open Access Journals (Sweden)

    Mario E. Nápoles Lizano

    2012-10-01

    Full Text Available ResumenEl tromboembolismo pulmonar agudo tiene mayor morbilidad y mortalidad en los ancianos, pero puede presentarse en adultos jóvenes; por eso el diagnóstico certero es muy importante en este grupo etario. En este artículo se presenta el caso de un hombre de 37 años de edad, que acude al cuerpo de guardia por dolor precordial, sin alteraciones electrocardiográficas y dilatación de las cavidades derechas en el ecocardiograma. Se realizó AngioTC y se observó una dilatación del tronco de la arteria pulmonar, donde había una imagen hipodensa que ocupaba su porción distal, en relación con tromboembolismo pulmonar agudo. El paciente evolucionó favorablemente con el tratamiento. Mediante este estudio, se evidencia la importancia del AngioTC con tomógrafo de doble fuente, para la evaluación del dolor torácico agudo, en el paciente que no tiene manifestaciones electrocardiográficas, ni enzimáticas de infarto agudo de miocardio. / AbstractAcute pulmonary thromboembolism have increased morbidity and mortality in the elderly, but it can also occur in young adults, which is why an accurate diagnosis is very important in this age group. This article presents the case of a 37-year-old man, who comes to the emergency room for chest pain without electrocardiographic abnormalities and dilatation of the right chambers on echocardiography. CT angiography was performed and it showed a dilated pulmonary trunk, where there was a hypodense image occupying its distal portion, in relation to acute pulmonary thromboembolism. The patient responded favorably to treatment. Through this study, the importance of CT angiography with dual-source CT scanner for evaluation of acute chest pain, in patients with no electrocardiographic manifestations or enzymatic myocardial infarction is demonstrated.

  11. Indicadores Bioquímicos do Infarto Agudo do Miocárdio/Biochemical Indicators of Acute Myocardial Infarction

    Directory of Open Access Journals (Sweden)

    Carolina Ferreira Cantelle

    2011-09-01

    Full Text Available Este artigo é uma revisão sobre os indicadores bioquímicos mais utilizados para diagnosticar Infarto Agudo do Miocárdio. Aborda-se rapidamente as doenças cardiovasculares, dando ênfase ao Infarto Agudo do Miocárdio, seus fatores de risco, prevenção e tratamento. Apresentam-se os marcadores cardíacos mais indicados, qualificando-os conforme suas especificidade e sensibilidade para o diagnóstico, concluindo que é importante a dosagem dos diferentes marcadores no diagnóstico do infarto agudo do miocárdio, em diferentes horários, pois estes se elevam conforme sua sensibilidade e especificidade. No entanto, a sintomatologia clínica e outros exames, como eletrocardiogramas devem estar presentes, possibilitando um diagnóstico mais seguro e um melhor monitoramento do paciente infartado. This article is an overview of the most widely used biochemical markers to diagnose acute myocardial infarction. Covers quickly cardiovascular diseases, with emphasis on acute myocardial infarction, its risk factors, prevention and treatment. Presents the most appropriate cardiac markers, qualifying them according to their specificity and sensitivity for the diagnosis, concluding that it is important to the dosage of different markers in the diagnosis of acute myocardial infarction at different times, because they rise as their sensitivity and specificity. However, the clinical symptoms and other tests such as electrocardiograms must be present, providing a more secure diagnosis and better patient monitoring myocardium.

  12. Rotura de la pared libre del ventrículo izquierdo secundaria a infarto agudo de miocardio

    Directory of Open Access Journals (Sweden)

    Claudio Solís

    2009-01-01

    Full Text Available RESUMENAunque la terapia trombolítica y la angioplastia primaria han cambiado radicalmente elmanejo, la evolución y el pronóstico del infarto agudo de miocardio, la rotura de la paredlibre del ventrículo izquierdo todavía implica una tasa elevada de mortalidad.Si bien la mayoría de los pacientes con esta complicación presentan un cuadro agudo ycatastrófico, que se caracteriza por taponamiento cardíaco, disociación electromecánica ymuerte en pocos minutos, aproximadamente un tercio de ellos tienen una evolución subagudacon hipotensión sostenida y diversos grados de derrame pericárdico, lo que posibilita laimplementación de medidas terapéuticas necesarias como puente al tratamiento quirúrgicoresolutivo.En este trabajo se presenta una revisión actualizada de las características clínicas yecocardiográficas de los pacientes con rotura de la pared libre del ventrículo izquierdo asociadacon infarto agudo de miocardio, con el objetivo de destacar los puntos clave del diagnóstico e incrementar la sospecha clínica de una entidad grave, no siempre fatal.REV ARGENT CARDIOL 2009;77:395-404.

  13. Manejo do paciente com infarto agudo do miocárdio atendido no SUS

    Directory of Open Access Journals (Sweden)

    Emerson de Albuquerque Seixas

    2016-10-01

    Full Text Available Introdução: O Infarto Agudo do Miocárdio (IAM é causado pela interrupção do fluxo sanguíneo nas artérias coronárias que irrigam o miocárdio. Trata-se de um evento com alta prevalência, que necessita de internação hospitalar e rápido tratamento. Objetivos: Descrever um caso de IAM que recebeu terapia trombolítica incompleta e realizou angioplastia parcial; Metodologia: Relato de caso de paciente internado no Conjunto Hospitalar de Sorocaba; Relato de Caso: SSA, 74anos, masculino, hipertenso e diabético há 20 anos, procurou o Pronto-Socorro na origem no dia 01/09/2015 com quadro de dor precordial intensa, após realização de esforço físico. Ao exame físico, apresentava-se taquicárdico (FC:150bpm e hipertenso (PA:230X120mmHg.Foi realizado ECG, que evidenciou supradesnivelamento do segmento ST em parede anterior extensa (de V1 a V5,DI e aVL. Foi optado pelo tratamento com agente trombolítico, porém o local só dispunha de metade da dose recomendada. Então foi transferido para o Conjunto Hospitalar de Sorocaba, onde foi optado por não realizar o restante da medicação. Cateterismo cardíaco realizado somente 14 dias depois, evidenciando 4 lesões. Realizada uma angioplastia com implante de apenas 2 stents. Foi solicitado nova angioplastia, que foi negada. Recebeu alta e atualmente aguarda a liberação do procedimento via ambulatorial, com quadro de angina estável. Conclusões: O relato reforça a necessidade da melhoria das condições de atendimento e tratamento de pacientes vítimas de infarto agudo do miocárdio no SUS.

  14. Infarto agudo do miocárdio na 31ª semana de gravidez: relato de caso

    Directory of Open Access Journals (Sweden)

    Filipa Pires Duarte

    2011-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A ocorrência de infarto agudo do miocárdio (IAM durante a gravidez é rara. Os autores descrevem o caso de IAM numa grávida de 31 semanas e a importância da existência de uma equipe multidisciplinar para sua abordagem. RELATO DO CASO: Grávida de 31 semanas, com antecedentes de tabagismo, alcoolismo e hipertensão, internada após um episódio de síncope. Na admissão, encontrava-se consciente e assintomática, embora hipotensa. O eletrocardiograma evidenciou marcada elevação do segmento ST em DI, AVL, V1-V6. Pesquisa de enzimas cardíacas foi positiva. O ecocardiograma transtorácico demonstrou redução da contratilidade ventricular esquerda e septal e uma fração de ejeção de 30%. A angiografia revelou oclusão proximal da artéria descendente anterior. Por insucesso da angioplastia por balão, foi colocado um stent metálico. A paciente iniciou terapêutica com b-bloqueadores, aspirina e clopidogrel. Em relação ao parto, optou-se por realizar cesariana eletiva, quatro semanas após o IAM. Suspendeu-se o clopidogrel sete dias antes do parto. A função cardíaca pré-operatória foi otimizada com infusão de levosimendana iniciada no dia anterior. A cesariana decorreu sob bloqueio peridural. O período intraoperatório decorreu sem complicações, à exceção de moderada hipotensão facilmente corrigida com fenilefrina. O índice de Apgar do recém-nascido foi de 9/10. CONCLUSÕES: Este é um dos poucos casos de infarto agudo do miocárdio e angioplastia descritos durante a gravidez. Os autores discutem as decisões tomadas pela equipe multidisciplinar, constituída por anestesiologistas, obstetras, cardiologistas e neonatologistas, notadamente no que se refere à dupla antiagregação plaquetária, ao tipo de parto e à anestesia.

  15. Sindrome confusional agudo por abstinencia aguda de nicotina Delirium due to acute nicotine withdrawal

    Directory of Open Access Journals (Sweden)

    Manuel Klein

    2002-08-01

    Full Text Available El síndrome confusional agudo (SCA o delirium en pacientes hospitalizados es un problema frecuente y grave. Se caracteriza por síntomas de comienzo agudo y curso fluctuante con inatención, pensamiento desorganizado, y con distintos niveles de alteración de la conciencia.En la bibliografía consultada, el SCA como manifestación de un síndrome de abstinencia aguda nicotínica fue descripto en solo ocho casos. Presentamos el caso de un tabaquista grave que, internado por una reagudización de su enfermedad pulmonar obstructiva crónica (EPOC, presentó un cuadro de SCA al tercer día de abstinencia tabacal, cediendo los síntomas tras la administración de un parche de nicotina. Lo descripto sugiere que en pacientes internados que presentan SCA y agitación, con fuertes antecedentes de tabaquismo, un simple ensayo con un parche de nicotina puede ofrecer en pocas horas una notable respuesta terapéutica y a su vez un test confirmatorio. El reconocimiento del SCA como forma de presentación de la abstinencia nicotínica permitirá identificar casos habitualmente complejos en los que se podrá implementar una sencilla y eficaz alternativa terapéutica.Delirium or acute confusional state among hospitalized patients is a frequent and serious problem. It is characterized by acute onset symptoms, fluctuating course, impaired attention, unorganized thinking, and altered level of conciousness. Delirium, as a manifestation of acute nicotine withdrawal syndrome has been reported in the reviewed literature only in eight cases. We report the case of a heavy smoker admitted because of a reagudization of his chronic obstructive pulmonary disease. At the third day of nicotine abstinence, he developed delirium with a rapid improvement of his symptoms after treatment with a transdermal nicotine patch. This description suggests that in hospitalized heavy smokers who develop delirium with agitation, a simple trial with a nicotine patch can offer a dramatic

  16. Factores asociados a síndrome confusional agudo en adultos mayores internados en emergencia de un hospital terciario

    Directory of Open Access Journals (Sweden)

    José Percy Amado Tineo

    2013-07-01

    Full Text Available Introducción: El síndrome confusional agudo es un problema frecuente en el adulto mayor, incrementado por patologías agudas. Objetivos: Determinar la frecuencia del síndrome confusional agudo en adultos mayores no críticos hospitalizados en un servicio de emergencia e identificar factores asociados. Diseño: Estudio transversal. Lugar: Servicio de Emergencia del Hospital Nacional Edgardo Rebagliati Martins, Lima, Perú. Participantes: Pacientes de 60 años o más. Intervenciones: Siguiendo normas de buenas prácticas clínicas, se entrevistó entre mayo y agosto 2010 a paciente/cuidador de 172 pacientes de 60 años o más, hospitalizados en salas de emergencia; se revisó la historia clínica. Principales medidas de resultados: Detectar síndrome confusional agudo mediante el Confussion Assessment Method. Resultados: La frecuencia de síndrome confusional agudo fue 34,9%, según categoría de adulto mayor: enfermo 6%, frágil 28%, complejo 58% (p<0,001. Se encontró antecedente de demencia en 30% de pacientes con síndrome confusional, deterioro cognitivo previo en 45%, síndrome confusional previo en 40,2%, dependencia funcional parcial 46% y total 39%, deterioro cognitivo moderado 27% y severo 40%. El 41,7% de pacientes con síndrome confusional presentó deshidratación moderada-severa (p=0,001 y 20% sepsis, como diagnósticos de ingreso (p=0,003. Las patologías de ingreso más frecuentes fueron infecciosas, cardiovasculares y metabólicas. No se encontró diferencia significativa en sexo, grado de instrucción, estado civil, pluripatología, hospitalización previa, polifarmacia, estado nutricional, presencia de sonda urinaria o nasogástrica, destino al egreso de emergencia ni estancia hospitalaria. Conclusiones: Existe alta frecuencia de síndrome confusional agudo en adultos mayores hospitalizados en servicios de emergencia, siendo factores asociados la demencia, deterioro cognitivo previo, confusión previa, dependencia funcional

  17. Radiofrequency encoded angular-resolved light scattering

    DEFF Research Database (Denmark)

    Buckley, Brandon W.; Akbari, Najva; Diebold, Eric D.

    2015-01-01

    The sensitive, specific, and label-free classification of microscopic cells and organisms is one of the outstanding problems in biology. Today, instruments such as the flow cytometer use a combination of light scatter measurements at two distinct angles to infer the size and internal complexity...... of cells at rates of more than 10,000 per second. However, by examining the entire angular light scattering spectrum it is possible to classify cells with higher resolution and specificity. Current approaches to performing these angular spectrum measurements all have significant throughput limitations...... Encoded Angular-resolved Light Scattering (REALS), this technique multiplexes angular light scattering in the radiofrequency domain, such that a single photodetector captures the entire scattering spectrum from a particle over approximately 100 discrete incident angles on a single shot basis. As a proof...

  18. Optical communication beyond orbital angular momentum

    CSIR Research Space (South Africa)

    Trichili, A

    2016-06-01

    Full Text Available Mode division multiplexing (MDM) is mooted as a technology to address future bandwidth issues, and has been successfully demonstrated in free space using spatial modes with orbital angular momentum (OAM). To further increase the data transmission...

  19. Dynamical Model of Fission Fragment Angular Distribution

    Science.gov (United States)

    Drozdov, V. A.; Eremenko, D. O.; Fotina, O. V.; Platonov, S. Yu.; Yuminov, O. A.; Giardina, G.; Taccone, A.

    2002-01-01

    A dynamical model of fission fragment angular distributions is suggested. The model allows one to calculate fission fragment angular distributions, prescission light particle multyplicities, evaporation residue cross sections etc. for the cases of decay of hot and rotating heavy nuclei. The experimental data on angular anisotropies of fission fragments and prescission neutron multiplicities are analyzed for the 16O + 208Pb, 232Th, 248Cm and 238U reactions at the energies of the incident 16O ions ranging from 90 to 160 MeV. This analysis allows us to extract both the nuclear friction coefficient value and the relaxation time for the tilting mode. It is also demonstrated that the angular distributions are sensitive to the deformation dependence of the nuclear friction.

  20. Amplitude damping channel for orbital angular momentum

    CSIR Research Space (South Africa)

    Dudley, Angela L

    2010-03-01

    Full Text Available Since the pioneering work on the entanglement of the orbital angular momentum (OAM) states of light, much attention has been devoted to the subject, with particular attention into the quantum aspects of information processing using OAM. Furthermore...

  1. Mastering AngularJD for .NET developers

    CERN Document Server

    Majid, Mohammad Wadood

    2015-01-01

    This book is envisioned for traditional developers and programmers who want to develop client-side applications using the AngularJS framework and ASP.NET Web API 2 with Visual Studio. .NET developers who have already built web applications or web services and who have a fundamental knowledge of HTML, JavaScript, and CSS and want to explore single-page applications will also find this guide useful. Basic knowledge of AngularJS would be helpful.

  2. Partial angular coherence and the angular Schmidt spectrum of entangled two-photon fields

    Energy Technology Data Exchange (ETDEWEB)

    Jha, Anand Kumar; Boyd, Robert W. [Institute of Optics, University of Rochester, Rochester, New York 14627 (United States); Agarwal, Girish S. [Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)

    2011-12-15

    We study partially coherent fields that have a coherent-mode representation in the orbital-angular-momentum-mode basis. For such fields, we introduce the concepts of the angular coherence function and the coherence angle. Such fields are naturally produced by the process of parametric down-conversion--a second-order nonlinear optical process in which a pump photon breaks up into two entangled photons, known as the signal and idler photons. We show that the angular coherence functions of the signal and idler fields are directly related to the angular Schmidt (spiral) spectrum of the down-converted two-photon field and thus that the angular Schmidt spectrum can be measured directly by measuring the angular coherence function of either the signal or the idler field, without requiring coincidence detection.

  3. Controle da dor pós-operatória da artroplastia total do joelho: é necessário associar o bloqueio do nervo isquiático ao bloqueio do nervo femoral? Control del dolor postoperatorio de la artroplastia total de la rodilla: ¿es necesario asociar el bloqueo del nervio isquiático al bloqueo del nervio femoral? Control of postoperative pain following total knee arthroplasty: is it necessary to associate sciatic nerve block to femoral nerve block?

    Directory of Open Access Journals (Sweden)

    Affonso H. Zugliani

    2007-10-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A artroplastia total do joelho (ATJ promove grande trauma tecidual, produzindo intensa dor no pós-operatório. A analgesia pós-operatória de boa qualidade é fundamental, devendo-se considerar que a mobilização articular precoce é um importante aspecto para obtenção de bons resultados. Há controvérsias na literatura sobre a eficácia do bloqueio isolado do nervo femoral. O objetivo deste estudo foi avaliar a analgesia pós-operatória com a associação do bloqueio dos nervos isquiático e femoral. MÉTODO: Foram estudados 17 pacientes submetidos à ATJ sob raquianestesia, divididos em dois grupos: A e B. No Grupo A (n = 9 foi realizado bloqueio do nervo femoral e no Grupo B (n = 8, bloqueio dos nervos femoral e isquiático. Os bloqueios foram realizados no pós-operatório imediato utilizando-se 20 mL de ropivacaína a 0,5% em cada um. A dor foi aferida nas primeiras 24 horas pela Escala Analógica Visual e escala verbal. Foi observado o tempo decorrido entre os bloqueios e a primeira queixa de dor (M1. RESULTADOS: A mediana do tempo de analgesia (M1 no Grupo A foi de 110 min. e no Grupo B de 1.285 min. (p = 0,0001. Não foram observadas complicações atribuíveis às técnicas utilizadas. CONCLUSÃO: O bloqueio do nervo isquiático, quando associado ao bloqueio do nervo femoral, nas condições deste estudo, melhorou de maneira significativa a qualidade da analgesia pós-operatória da ATJ.JUSTIFICATIVA Y OBJETIVOS: La artroplastia total de la rodilla (ATR promueve gran trauma del tejido produciendo un intenso dolor en el postoperatorio. La analgesia de postoperatorio de buena calidad es fundamental, debiendo considerar que la movilización articular precoz es un importante aspecto para la obtención de buenos resultados. Existen controversias en la literatura sobre la eficacia del bloqueo aislado del nervio femoral. El objetivo de este estudio fue evaluar la analgesia en postoperatorio con la asociaci

  4. Síndrome confusional agudo en pacientes internados Acute confusional state in hospitalized patients

    Directory of Open Access Journals (Sweden)

    Andrea Ferreyra

    2004-10-01

    Full Text Available El síndrome confusional agudo (SCA o delirio es uno de los trastornos mentales más frecuentes en pacientes hospitalizados por enfermedades médicas. Se analizan 278 pacientes de los cuales 30 (10.8% presentaron SCA. Los pacientes que presentaron esta complicación eran mayores de 70 años, con antecedentes de accidente cerebrovascular y demencia, con un menor desempeño de la actividad diaria previo a la internación y requirieron mayor utilización de alimentación enteral. Las infecciones y la fractura de cadera fueron las causas de internación más frecuentes. La mortalidad fue significativamente superior en los pacientes con SCA que en pacientes sin SCA.Delirium or acute confusional status (ACS is a common mental disorder found in hospitalized patients. A total of 278 patients were evaluated. Of these, 30(10.8% developed ACS. The patients who developed ACS were 70 years of age or older, had history of stroke or dementia, as well as impairment in activities of daily living, and required enteral feeding more frequently. The infections and hip fracture were the most frequent reasons for hospitalization. The mortality in patients with ACS was significantly higher than in patients without ACS.

  5. ROTURA DE ANEURISMA DE AORTA ABDOMINAL: SU IMPORTANCIA COMO DIAGNOSTICO DIFERENCIAL EN ABDOMEN AGUDO

    Directory of Open Access Journals (Sweden)

    Vanessa Orellana-Villazón

    2012-02-01

    Full Text Available El aneurisma aórtico abdominal (AAA roto es una forma de presentación poco frecuente de los AAA. Presentamos un caso de rotura de aneurisma de aorta abdominal (AAAr de un paciente varón de 76 años de edad que ingresa al servicio de emergencias del Hospital Elizabeth Setón por presentar dolor abdominal punzante en región lumbar derecha de inicio súbito e intensidad creciente, llegando a perder el conocimiento. La impresión diagnóstica inicial incluye cólico ureteral e hipertensión arterial; sin embargo después realizar una ecografía abdominal y posteriormente una tomografía abdominal se concluye con el diagnostico de AAAr. El paciente es sometido a cirugía de emergencia, y después de permanecer tres días en terapia intensiva y tres días en sala, es dado de alta. Consideramos importante informar este caso clínico por la frecuencia con que se le confunde con patologías renales o abdomen agudo, pese a la sintomatología característica que presenta, que en muchos casos lleva a un diagnostico retrasado y posteriormente a la muerte.

  6. Edema agudo hemorrágico da infância Acute hemorrhagic edema of infancy

    Directory of Open Access Journals (Sweden)

    Fabiana Britto Goulart

    2004-06-01

    Full Text Available Relatamos o caso de uma criança de oito meses de idade com infecção das vias aéreas superiores, seguida de irritabilidade e pelo aparecimento de lesões purpúricas na face, extremidades e pavilhões auriculares e edema de dorso dos pés e das mãos. Inicialmente recebeu dexametasona, ampicilina e cloranfenicol para tratamento de suposta meningococcemia. Entretanto, as lesões características e a boa evolução clínica do quadro levaram-nos ao diagnóstico de uma forma rara de vasculite cutânea: edema agudo hemorrágico da infância.We report the case of an eight-month child with upper airway infection followed by irritability and purpuric lesions in his face, ears and extremities and peripheral soft tissue edema. He was treated with dexamethasone, ampicillin and chloramphenicol for presumed meningococcemia, but the characteristics lesions and the benign course of the disease led us to the diagnosis of a rare form of cutaneous vasculitis called Acute Hemorrhagic Edema of Infancy (AHEI.

  7. Occurrence of Zaprionus indianus (Diptera: Drosophilidae in Agudo, Rio Grande do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Mauricio Batistella Pasini

    2012-03-01

    Resumo. Este trabalho faz menção ao primeiro registro de Zaprionus indianus Gupta (Diptera: Drosophilidae encontrado na zona rural do município de Agudo, no estado do Rio Grande do Sul, Brasil. Os adultos da mosca foram encontrados primeiramente em frutos de ameixa (Prunus salicina Lindl posteriormente em figos maduros (Ficus carica L. em dois pomares. No primeiro pomar cerca de 80% dos figos coletados apresentaram ataque de Z. indianus e, no segundo pomar 50% dos figos da cv. “Pingo de mel” e 80% da variedade “Roxo de Valinhos” foram infestados. No período correspondente a emergência dos adultos, coletou-se um total de 1364 indivíduos. Os figos da cv “Roxo de Valinhos” apresentaram maior emergência de adultos. Além de estar presente em restos culturais de figo, Z. indianus foi visualizada sobrevoando restos culturais de Syagrus romanzoffiana (Cham., Cucumis melo L., Citrullus vulgaris Schrad. e Vitis vinifera L., associada a outros drosofilídeos. Ressalta-se que medidas de monitoramento e controle da praga deverão ser adotadas no município para garantir figos de alta qualidade e sadios.

  8. Preliminary geochronological data of the Morro Agudo de Goias Dike Swarm

    International Nuclear Information System (INIS)

    Tomazzoli, Edison Ramos; Nilson, Ariplinio Antonio

    2001-01-01

    The Morro Agudo Dyke Swarm consists of mafic and ultramafic dykes and ultramafic dykes and stocks that intrude Archean granite-gneiss terranes of the Goias Massif. The dyke swarm was subdivided into five rock groups: Group I-basaltic andesite in dykes; Group II-metadiabase, diabase, metagabbro and amphibolite in dykes: Group III-metadiabase associated with-meta ultramafic rocks in the same dyke; Group IV-meta ultramafic rocks in dykes; Group V-meta ultramafic rocks in stocks. Four basaltic andesite dyke samples were dated using the K-Ar whole-rock method, yielding 2,412 ± 30 Ma, 2,403 ± 48 Ma, 2,254 ± Ma and 2,006 ±45 Ma ages. A Sm-Nd isochronic diagram for Group III mafic-ultramafic dyke yielded a 2,331 ± 101 Ma age with 0.50976 initial ratio. It is believed that this age may be extensive to the other mafic-ultramafic dykes of the dyke swarm. (author)

  9. Current perspectives of acute pain treatment Perspectivas actuales de tratamiento del paciente con dolor agudo

    Directory of Open Access Journals (Sweden)

    Tiberio Alvarez Echeverri

    1993-03-01

    Full Text Available

    In the last years opioids have become of great importance in the relief of postoperative and other forms of acute pain. Reasons for this trend have been the availability of agonist opioids like phentanyl. sulphentanyl and alphentanyl and the results of research on the physlology. The pharmacology and the chemistry of drug receptors and neurotransmitters. The studies on chemicals other than opioids that contribute to pain relief when administered through different ways. specially the spinal. Have also influenced such a trend.

    En los últimos años los opiáceos han adquirido gran importancia en el alivio del dolor agudo especialmente del tipo postoperatorio. Una de las razones ha sido la disponibilidad de morfínicos agonistas como el fentanil, el sufentanil y el alfentanil; otra es la investigación de la fisiología, la farmacología y la química de los receptores y los neurotransmisores como de sustancias diferentes a los opláceos, aplicadas por diferentes vías en especial la espinal, que coadyuvan al alivio del dolor.

  10. Bloqueio "3 em 1" por via anterior: bloqueio parcial, completo ou superdimensionado? Correlação entre anatomia, clínica e radio imagens Bloqueo "3 en 1" por vía anterior: bloqueo parcial, completo o superdimensionado? Correlación entre anatomía, clínica y radio imágenes Anterior "3-in-1" blockade: partial, total or overdimensioned block? Correlation between anatomy, clinic and radio images

    Directory of Open Access Journals (Sweden)

    Karl Otto Geier

    2004-08-01

    em 1" ou "2,5 em 1", sem a participação do nervo obturador. Com cateter curto (G2, o bloqueio "3 em 1" foi classificado como completo em 6,6% dos casos (um paciente. Porém, com cateter longo (G3, o resultado tende a ser mais previsível em relação aos outros grupos, especialmente quando o cateter alcança o espaço paravertebral lombossacral, resultando num bloqueio "3 em 1" completo em 20% dos casos (três pacientes ou, raramente, num bloqueio "3 em 1" superdimensionado em 13,2% dos casos (dois pacientes.JUSTIFICATIVA Y OBJETIVOS: El clásico bloqueo "3 en 1" por vía anterior ha suscitado divergencias cuanto al envolvimiento anestésico de sus tres participantes, el nervio femoral, el nervio cutáneo lateral del muslo y el nervio obturador. El objetivo de este estudio es verificar el resultado del bloqueo "3 en 1" por vía anterior, a través de las técnicas: inyección única (G1, catéteres cortos (G2 y catéteres largos (G3. Los bloqueos "3 en 1", clínicamente identificados como completos o superdimensionados fueron, adicionalmente, investigados por medio de radio imagen. MÉTODO: La identificación del espacio subfascial ilíaco en los bloqueos "3 en 1" con inyección única o con catéteres fue hecha por la pérdida de resistencia al aire. En varios eventos dolorosos, el volumen anestésico administrado varió entre 30 y 40 ml y la introducción cranial de los catéteres fue hasta 18 cm en el espacio subfascial ilíaco. Cuando la pesquisa clínica apuntaba envolvimiento del nervio obturador o de otro nervio adicional al bloqueo "3 en 1", se complementava la investigación con estudio radiográfico y tomodensiométrico con el propósito de establecer correspondencia con la anatomía pélvica. RESULTADOS: El envolvimiento de los nervios femoro cutáneo lateral y obturador no fueron constantes, al contrario del nervio femoral. En el estudio, ningún bloqueo "3 en 1" completo con inyección única (G1 se manifestó, y si un bloqueo "2 en 1", con la

  11. Transverse angular momentum in topological photonic crystals

    Science.gov (United States)

    Deng, Wei-Min; Chen, Xiao-Dong; Zhao, Fu-Li; Dong, Jian-Wen

    2018-01-01

    Engineering local angular momentum of structured light fields in real space enables applications in many fields, in particular, the realization of unidirectional robust transport in topological photonic crystals with a non-trivial Berry vortex in momentum space. Here, we show transverse angular momentum modes in silicon topological photonic crystals when considering transverse electric polarization. Excited by a chiral external source with either transverse spin angular momentum or transverse phase vortex, robust light flow propagating along opposite directions is observed in several kinds of sharp-turn interfaces between two topologically-distinct silicon photonic crystals. A transverse orbital angular momentum mode with alternating phase vortex exists at the boundary of two such photonic crystals. In addition, unidirectional transport is robust to the working frequency even when the ring size or location of the pseudo-spin source varies in a certain range, leading to the superiority of the broadband photonic device. These findings enable one to make use of transverse angular momentum, a kind of degree of freedom, to achieve unidirectional robust transport in the telecom region and other potential applications in integrated photonic circuits, such as on-chip robust delay lines.

  12. Angular distribution of oriented nucleus fission neutrons

    International Nuclear Information System (INIS)

    Barabanov, A.L.; Grechukhin, D.P.

    1982-01-01

    Calculations of anisotropy of angular distribution of oriented 235 U nuclei thermal fission neutrons have been carried out. the neutrons were assumed to evaporate isotropically by completely accelerated fragements in the fragment system with only its small part, i. e. fission-producing neutrons, emitted at the moment of neck break. It has been found out that at low energies of neutrons Esub(n)=1-2 MeV the sensitivity of the angular distribution anisotropy to variations of spectrum of neutron evaporation from fragments and the magnitude of a share of fission-producing neutrons reaches approximately 100%, which at high energies, Esub(n) > 5 MeV it does not exceed approximately 20%. Therefore the angular distribution of fast neutrons to a greater degree of confidence may be used for restoring the angular distribution anisotropy of fragments while the angular distribution of low energy neutrons may be used for deriving information on the fission process, but only in case 6f the experiment accuracy is better than approximately 3%

  13. Perirectal block for out-patient anorectal surgery: A new technique Bloqueo perirrectal para cirugía anorrectal ambulatoria: una nueva técnica

    Directory of Open Access Journals (Sweden)

    Javier H. Eslava-Schmalbach

    2011-03-01

    Full Text Available Introduction. Perirectal block using four puncture places has been classically described for rectal surgery.
    Objective. This paper was aimed at showing the quality of anesthesia and postoperative analgesia using a new two-puncture-site technique.
    Materials and methods. Patients scheduled for ambulatory rectal surgery between January/2003 and December/2007 were included consecutively. The new two-puncture technique was used. Alternative anesthetic management and level of postoperative pain requirements were evaluated (rated visual analogue scale-VAS. Follow-up was done by telephone between 1st and 10th postoperative day to evaluate complications, pain (yes/no, and satisfaction level (1-5 points score.
    Results. Four hundred and nine subjects were included; 50.61% were female. Mean age was 43 (95%CI: 41-44; range: 17-85, 12.7% were aged over 60. According to the American Society of Anesthesiology (ASA, 72.6% were classified as ASA1 and 26.1% ASA2. External and internal hemorrhoidectomy was performed on 31% of patients; 61.6% had two or more procedures. Lidocaine was used on 406 subjects. Ropivacaine was added for 9.2% of them and levobupivacaine for 89.4%. 394 patients were followed-up. Median follow-up was 4 days. A response was obtained from 346 subjects (84.6%; 105 (30.3% recalled having suffered pain during the post-operative period, being most frequent in the lidocaine+ropivacaine group (17/39, 43.5% than in the lidocaine+bupivacaine group (88/307, 28.6%. Satisfaction was evaluated by 336 subjects (82.1%, 332 of them (98.8% awarding a score of 5. Two subjects (0.6% scored this 2 and 1. Subjects did not mention complications.
    Conclusions. The new peri-rectal two-puncture block technique is easy and also provides analgesia and a high degree of satisfaction.

    Introducción. El bloqueo perirrectal de cuatro punciones ha sido descrito clásicamente para cirugía rectal. El objetivo de este artículo es describir la calidad de

  14. Angular Spectral Analysis and Lowpass Filtering of Aeromagnetic ...

    African Journals Online (AJOL)

    Total-field aeromagnetic data over the western half of the Bornu basin and its surrounding areas were analyzed using angular spectral analysis, upward continuation and lowpass filtering techniques. Results revealed several angular spectral peaks at various angular orientations. The angular orientations correlated with the ...

  15. Data-oriented development with AngularJS

    CERN Document Server

    Waikar, Manoj

    2015-01-01

    This book helps beginner-level AngularJS developers organize AngularJS applications by discussing important AngularJS concepts and best practices. If you are an experienced AngularJS developer but haven't written directives or haven't created custom HTML controls before, then this book is ideal for you.

  16. Angular correlations and high energy evolution

    International Nuclear Information System (INIS)

    Kovner, Alex; Lublinsky, Michael

    2011-01-01

    We address the question of to what extent JIMWLK evolution is capable of taking into account angular correlations in a high energy hadronic wave function. Our conclusion is that angular (and indeed other) correlations in the wave function cannot be reliably calculated without taking into account Pomeron loops in the evolution. As an example we study numerically the energy evolution of angular correlations between dipole scattering amplitudes in the framework of the large N c approximation to JIMWLK evolution (the 'projectile dipole model'). Target correlations are introduced via averaging over an (isotropic) ensemble of anisotropic initial conditions. We find that correlations disappear very quickly with rapidity even inside the saturation radius. This is in accordance with our physical picture of JIMWLK evolution. The actual correlations inside the saturation radius in the target QCD wave function, on the other hand, should remain sizable at any rapidity.

  17. Frecuencia de secuela renal pos evento agudo en síndrome urémico hemolítico

    Directory of Open Access Journals (Sweden)

    Jose Antonio Lulli-Cantoni

    2015-04-01

    Full Text Available Objetivos: Determinar la frecuencia de secuela renal después del evento agudo de Síndrome Urémico Hemolítico (SUH en niños y los factores asociados a la presencia de secuelas. Material y métodos: Estudio descriptivo y retrospectivo. Se revisaron las historias clínicas de los pacientes con SUH en el HNCH de 1997 al 2012, y se registraron datos de características clínicas, hallazgos de laboratorio y parámetros de función renal al ingreso, al alta y a los seis meses después del alta. En los casos que no contaban con control a los 6 meses, se intentó contactar a los pacientes para tomar nuevos controles. Resultados: Siete de 12 pacientes presentaron disminución en la tasa de filtración glomerular (TFG o proteinuria o hipertensión a los 6 meses o más después del episodio agudo, con un promedio de 30,75 meses de seguimiento. Tanto en los pacientes con secuelas como con recuperación renal se encontró una distribución similar de los factores asociados a secuelas como hipertensión al alta, proteinuria al alta, necesidad de diálisis, oligoanuria, leucocitosis > 20 000 cel/mm3 y síntomas neurológicos. Sin embargo algunas variables como oligoanuria y necesidad de diálisis se encontraron a niveles por debajo de los descritos en la literatura. Conclusiones: Es claro que existen pacientes con secuelas renales luego del episodio agudo de SUH que además presentan varios factores predictores de secuelas descritos en la literatura.

  18. Estudio del absentismo laboral de los celadores en un hospital de agudos

    Directory of Open Access Journals (Sweden)

    María Jesús Almodóvar-Carretón

    Full Text Available Resumen Introducción: El absentismo es un problema importante en la actualidad. Las bajas por enfermedad común no dejan de crecer y superaron en el año 2016 los 4,5 millones, produciendo unos perjuicios laborales y económicos de gran importancia. Objetivo: Estudio del absentismo laboral por causa de enfermedad o lesiones en la categoría de Celadores de un Hospital de Agudos, con el fin de identificar factores relacionados con este absentismo. Material y métodos: Estudio descriptivo. Se registró el absentismo laboral en 177 trabajadores con categoría celadores de un hospital de agudos durante el año 2015. Las variables analizadas fueron: número de Incapacidad Transistorias (I.T, periodos de I.T, sexo, edad, IMC, estado civil, número de hijos, practicar deportes, tipo de contrato, turno de trabajo, patologías, carga de trabajo, adaptación del puesto de trabajo por las patologías que padece, fecha de la Incapacidad Transitoria y días total de absentismo. Para el análisis estadístistico univariante se aplicó una χ2 en proporciones y la t-student en variables contínuas. Posteriormente se construyó un modelo mutivariante (Regresión Logística cuya variable dependiente fue el absentismo. Resultados: Los días totales de baja fueron de 4425 días, lo que supone 33187.5 horas perdidas. La tasa de absentismo (T.A por cada 100 horas trabajadas fue de 11.4 horas perdidas y la tasa general de absentismo (T.G.A. fue de 25 jornadas perdidas por cada trabajador. Un 44.6 % del total de los trabajadores tuvieron una baja médica durante el año de estudio. Las variables relacionadas en el estudio univariante fueron el sexo, tener hijos, padecer patología osteomuscular u otras patologías, tener el puesto adaptado y el sobrepeso. En el modelo multivariante las variables significativas fueron padecer patología osteomuscular con una O.R. de 1.955 (0.982-3.89 y padecer Obesidad O.R. de 3.433 (1.372 - 8.590. Discusión: Las variables patolog

  19. GRUPOS DE UTILIZACION DE RECURSOS EN UNIDADES DE AGUDOS Y MEDIA ESTANCIA DE SERVICIOS DE GERIATRIA

    Directory of Open Access Journals (Sweden)

    Juan José Solano Jaurrieta

    2001-01-01

    Full Text Available Fundamentos: En los últimos años se han implantado en nuestro país Sistemas de Clasificación de Pacientes (SCP con objeto de medir el «producto hospitalario». Sin embargo los sistemas más tradicionales resultan poco adecuados para la población anciana, en los que la incapacidad asociada a la enfermedad resulta determinante para explicar el consumo de recursos y los resultados asistenciales. Por ello, nos planteamos aplicar en servicios especializados de atención al anciano un sistema que contempla este parámetro, los Grupos de Utilización de Recursos (RUG, analizando las características y diferencias en la distribución en función de RUG en cuatro Servicios de Geriatría. Métodos: Se estudian transversalmente, mediante cortes sucesivos en períodos superiores a la estancia media en cada unidad, los pacientes ingresados en las unidades de agudos y media estancia de los Servicios de Geriatría del Hospital Monte Naranco (HMN (n=318, Hospital Central de la Cruz Roja (HCCR (n=384, Hospital General de Guadalajara (HG (n=272 y Hospital Virgen del Valle (HVV (n=390, en lo relativo a su distribución según la clasificación RUG-T18. Las posibles diferencias entre los centros se analizaron mediante el test estadístico chi-cuadrado (SPSS para windows Resultados: Para el conjunto de la muestra los pacientes se concentran en los grupos R, S y C de la clasificación, con muy escasa representación de los grupos P y B, detectándose diferencias entre los centros. Así, el HCCR es el que maneja una mayor proporción de pacientes del grupo R (47,64% vs. 23,66% en el HMN, 20,57% en el HG y 20,53% en el HVV y una menor proporción de pacientes del grupo S (3,12% vs 6,40% en el HMN, 9,92% en el HG y 9,76% en el HVV y C (48,94% vs 76,29% en el HMN, 66,89% en el HG y 68,36% en el HVV. Igualmente es posible detectar diferencias en el análisis individual para las unidades de agudos y media estancia. Conclusiones: Los grupos de utilización de recursos

  20. Grupos de utilizacion de recursos en unidades de agudos y media estancia de servicios de geriatria

    Directory of Open Access Journals (Sweden)

    Solano Jaurrieta Juan José

    2001-01-01

    Full Text Available Fundamentos: En los últimos años se han implantado en nuestro país Sistemas de Clasificación de Pacientes (SCP con objeto de medir el «producto hospitalario». Sin embargo los sistemas más tradicionales resultan poco adecuados para la población anciana, en los que la incapacidad asociada a la enfermedad resulta determinante para explicar el consumo de recursos y los resultados asistenciales. Por ello, nos planteamos aplicar en servicios especializados de atención al anciano un sistema que contempla este parámetro, los Grupos de Utilización de Recursos (RUG, analizando las características y diferencias en la distribución en función de RUG en cuatro Servicios de Geriatría. Métodos: Se estudian transversalmente, mediante cortes sucesivos en períodos superiores a la estancia media en cada unidad, los pacientes ingresados en las unidades de agudos y media estancia de los Servicios de Geriatría del Hospital Monte Naranco (HMN (n=318, Hospital Central de la Cruz Roja (HCCR (n=384, Hospital General de Guadalajara (HG (n=272 y Hospital Virgen del Valle (HVV (n=390, en lo relativo a su distribución según la clasificación RUG-T18. Las posibles diferencias entre los centros se analizaron mediante el test estadístico chi-cuadrado (SPSS para windows Resultados: Para el conjunto de la muestra los pacientes se concentran en los grupos R, S y C de la clasificación, con muy escasa representación de los grupos P y B, detectándose diferencias entre los centros. Así, el HCCR es el que maneja una mayor proporción de pacientes del grupo R (47,64% vs. 23,66% en el HMN, 20,57% en el HG y 20,53% en el HVV y una menor proporción de pacientes del grupo S (3,12% vs 6,40% en el HMN, 9,92% en el HG y 9,76% en el HVV y C (48,94% vs 76,29% en el HMN, 66,89% en el HG y 68,36% en el HVV. Igualmente es posible detectar diferencias en el análisis individual para las unidades de agudos y media estancia. Conclusiones: Los grupos de utilización de recursos

  1. Descripción de un brote de enfisema y edema pulmonar agudo del bovino (EPAB) en Parral (Chile)

    OpenAIRE

    H. URRUTIA; C. BREVIS; M. QUEZADA; S. DONOSO

    1997-01-01

    Se describe un brote de enfisema y edema alveolar agudo del bovino (EPAB) ocurrido en la zona centro-sur a fines del verano de 1995. Los animales Frisón negro, de aproximadamente 2 años de edad, fueron afectados después de cambiarse de una pradera fibrosa a una suculenta de alfalfa. La mortalidad por esta causa fue de un 23%. Las principales lesiones encontradas en la necropsia fueron enfisema y edema intersticial intenso del pulmón, lo cual fue corroborado histopatológicamente, encontrándose...

  2. Actuación urgente ante el infarto agudo de miocardio con elevación del segmento ST (IAMCEST)

    OpenAIRE

    Fernández Suárez, María

    2016-01-01

    Introducción: El infarto agudo de miocardio (IAM) es una de las primeras causas de muerte tanto en España como en todo el mundo. Según la OMS, se identifica por la presencia de al menos dos de los siguientes criterios: dolor torácico típico o atípico sugestivo de isquemia, elevación de marcadores de macronecrosis ó cambios electrocardiográficos (ECG) característicos con presencia de ondas Q patológicas. El tratamiento de elección es la reperfusión, ya sea mediante fibrinolisis o angioplastia ...

  3. Abdomen agudo quirúrgico en el adulto mayor. Hospital Vladimir Ilich Lenin. Enero 2005 a enero 2008

    OpenAIRE

    Pavel Sánchez Reynaldo; Yasmín Rodríguez Pascual; Rafael Vázquez Fernández; Celia Yamila Cordero Monferrer

    2010-01-01

    Aborda un estudio descriptivo prospectivo en 388 adultos mayores operados de abdomen agudo en el Hospital Vladimir Ilich Lenin, enero 2005 a enero 2008, a fin de caracterizar el comportamiento de las afecciones que provocan esta entidad intraabdominal. La tercera edad y el sexo masculino resultaron los más afectados. El factor de riesgo quirúrgico más asociado fue la hipertensión arterial. El diagnóstico preoperatorio más frecuente fue la oclusión intestinal mecánica. No se indicaron adecuada...

  4. Características clínicas y diagnósticas en infarto renal agudo en una serie clínica

    Directory of Open Access Journals (Sweden)

    C. Juan Alberto Fierro, Dr.

    2010-07-01

    Full Text Available El infarto renal agudo constituye un diagnóstico infrecuente. Ello puede deberse a que sus síntomas son similares a los de los cálculos renales o la pielonefritis aguda. Por esa razón, el síntoma cardinal de dolor de flanco debe ser investigado en forma muy acabada. Esta serie clínica revisa seis casos de infarto renal agudo vistos en esta institución durante el año 2007.

  5. Radicales libres de oxígeno y distress respiratorio agudo

    Directory of Open Access Journals (Sweden)

    Aracelis E. Dorado Lambert

    2000-09-01

    Full Text Available Se realizó una revisión acerca de la formación de radicales libres de oxígeno en el organismo, así como el aumento exagerado de su génesis durante la exposición a altas concentraciones de oxígeno y en el desarrollo de la explosión respiratoria que acompaña la fagocitosis. Se analiza además la formación de estos radicales en el pulmón durante la evolución del distress respiratorio agudo. Se abordó, posteriormente, el uso actual, sobre todo en el ámbito internacional, de los antioxidantes y bloqueadores de la lipoperoxidación para disminuir los efectos adversos de los radicales libres. A pesar de estas nuevas medidas, se corrobora que la disminución experimentada en la mortalidad por esta entidad, obedece a la optimización de los cuidados respiratorios, en especial la ventilación mecánica.The formation of free oxygen radicals in the body and the excessive increase of its genesis during exposure to high concentrations of oxygen and in the development of respiratory burst accompanying phagocytosis were reviewed. Also the formation of these radicals in lung during acute respiratory distress was analyzed. Similarly, the present use at the international level of antioxidants and lipoperoxidation blockers to diminish adverse effects of free radicals are addressed in this paper. In spite of these new measures, it was confirmed that the reduction of mortality rate from this disease was due to the improvement of respiratory care particularly the mechanical ventilation.

  6. Ticagrelor en el síndrome coronario agudo: Explicando lo inexplicable

    Directory of Open Access Journals (Sweden)

    Juan Martín Criniti

    2014-06-01

    Full Text Available En el estudio PLATO se evaluó la utilidad del agregado de ticagrelor, en lugar de clopidogrel, a aspirina en pacientes con síndrome coronario agudo, mostrando resultados sorprendentemente positivos que llevaron a que la droga sea aceptada por las agencias regulatorias y las sociedades especializadas de todo el mundo. Sin embargo, el análisis crítico de los informes presentados por el patrocinador reveló la existencia de distintos aspectos difíciles de explicar y que ponen en tela de juicio la veracidad de sus resultados. La pérdida de seguimiento no explicada, la tasa de mortalidad y los beneficios excesivos no comparables con estudios previos, y la inconsistencia de hallazgos de acuerdo al país, al ente adjudicador de eventos y al comité de monitoreo, son algunos de los puntos más controvertidos. La mayoría de las críticas a este artículo se basan en información que no se desprende del texto del estudio publicado. Esto supone un desafío al análisis crítico de la literatura y genera dudas sobre hasta qué punto el conflicto de interés económico influenció el desarrollo del estudio y la comunicación de sus resultados y, probablemente, la aceptación de la droga para su uso comercial.

  7. Morbilidad y mortalidad en pacientes con infarto agudo de miocardio ST elevado en un hospital general

    Directory of Open Access Journals (Sweden)

    Eduardo Carcausto

    2010-10-01

    Full Text Available Objetivo: Determinar la morbilidad y mortalidad de los pacientes con infarto agudo de miocardio ST elevado (IMA STE atendidos en un hospital general y describir sus características demográficas, clínicas y epidemiológicas. Material y métodos: Estudio descriptivo, serie de casos, retrospectivo, en pacientes con IMA STE en el Hospital Nacional Cayetano Heredia, del 1 de enero a 31 de diciembre del 2007. Se registraron variables clínicas y de laboratorio. Resultados: Se incluyeron 30 casos. El 86,7% fueron varones. La edad media fue de 62,8±12,6 años. El antecedente de hipertensión arterial se encontró en 57%, obesidad en 40%, tabaquismo en 40%, y de diabetes mellitus en 30%. El dolor torácico típico ocurrió en 75% de pacientes. El 50% de pacientes tuvieron hipertensión no controlada a la admisión, 33% leucocitosis, y 46% glicemia >110 mg/dl. Sólo 25% recibió terapia de reperfusión, 33,3% de casos de forma exitosa, siendo el tiempo puerta-aguja de 250 ± 114 minutos. Las complicaciones ocurrieron en 26,6% de pacientes, siendo la mortalidad de 13,3%. El 76% ingresó al hospital con un tiempo de dolor menor de 3 horas, Conclusiones: Los pacientes con IMA ST elevado fueron predominantemente varones, mayores de 60 años, ingresaron al hospital con un tiempo de dolor torácico menor de tres horas y un mínimo porcentaje recibió terapia de repercusión. Las arritmias fueron las complicaciones más frecuentes y la mortalidad post IMA alcanzó 13,3 % de los casos.(Rev Med Hered 2010;21:202-207.

  8. Terapia trombolítica en pacientes con infarto agudo de miocardio en Cienfuegos

    Directory of Open Access Journals (Sweden)

    Lázaro Abilio Hernández Rodríguez

    2014-03-01

    Full Text Available Fundamento: el tratamiento trombolítico practicado a menos de dos horas, tras el inicio del infarto tiene resultados similares a la reperfusión mecánica. Objetivo: describir aspectos relevantes de la terapia trombolítica en pacientes con infarto agudo de miocardio con elevación del segmento ST en Cienfuegos. Métodos: estudio descriptivo, prospectivo, en 225 pacientes egresados (vivos y fallecidos desde el 1o de abril de 2012 al 31 marzo de 2013, de la Unidad de Cuidados Integrales del Corazón y la Unidad de Cuidados Intensivos Polivalentes, del Hospital Dr. Gustavo Aldereguía Lima. Las variables estudiadas se obtuvieron de la revisión de las historias clínicas e incluyeron: variables demográficas y clínicas, tiempos de demora, sitio, motivo de exclusión y nivel de prioridad para la trombolisis. Resultados: la media de edad superó los 60 años. Predominaron los hombres, hipertensos y de alto riesgo según la escala GRACE. El 29,7 % de los pacientes no recibió terapia trombolítica, debido mayormente al factor tiempo y la mayoría (82,3 % se trató en el Hospital. Las medianas de los tiempos de demora: síntomas-puerta, puerta-droga y síntomas-droga fueron 90, 35 y 140 minutos respectivamente. Conclusiones: la trombolisis extrahospitalaria acorta el tiempo total de isquemia, pero pocos pacientes se beneficiaron de ella. Los retrasos para la terapia trombolítica en Cienfuegos continúan por encima de los estándares requeridos.

  9. Nefropatía por contraste en el síndrome coronario agudo

    Directory of Open Access Journals (Sweden)

    Mariana Carnevalini

    2011-10-01

    Full Text Available La nefropatía inducida por contraste (NIC es una de las causas más frecuentes de insuficiencia renal en pacientes internados. En el síndrome coronario agudo (SCA, la presencia de NIC aumenta la morbimortalidad. Las medidas de profilaxis y los factores de riesgo intervinientes de NIC en SCA no han sido determinados con exactitud. El objetivo de este estudio fue evaluar la incidencia de NIC y los factores asociados a su desarrollo en pacientes ingresados en unidad coronaria con requerimiento de cinecoronariografía (CCG. Se realizó un estudio de cohorte retrospectivo. Se incluyeron pacientes consecutivos cursando SCA estudiados con CCG dentro de las 72 horas de su admisión. Se definió NIC al aumento del 25% del valor de creatinina a las 48 h sobre el nivel basal de ingreso. El período de inclusión fue entre el 1° de enero de 2004 hasta el 30 de junio de 2010. Se analizaron 125 casos. La incidencia de NIC fue del 10.4% (n = 13. En el análisis multivariado, los factores asociados independientemente a su desarrollo fueron la edad [OR 1.05 (IC 95% 1.004 - 1.11 p = 0.034], la angioplastia a múltiple vaso [OR 2.2 (IC 95% 1.07 - 4.8, p = 0.03] y el volumen de contraste utilizado [OR 1.007 (IC 95% 1.001 - 1.01, p = 0.014].

  10. Adherencia al tratamiento y calidad de vida en personas con infarto agudo de miocardio

    Directory of Open Access Journals (Sweden)

    Jennifer Rojas-Reyes

    2016-01-01

    Full Text Available Objetivo: identificar la asociación entre adherencia al tratamiento y calidad de vida relacionada con la salud (CVRS en población con infarto agudo de miocardio (IAM. Materiales y método: estudio cuantitativo de diseño descriptivo correlacional de corte transversal. Se eligieron 180 participantes por muestreo de tipo probabilístico con selección aleatoria simple. Para el análisis estadístico, se utilizó estadística no paramétrica con correlación de Spearman. Resultados: la edad media fue de 63 años, el promedio de tiempo transcurrido después del infarto fue de 35 meses. Frente al nivel de adherencia al tratamiento, predominó la adherencia total (54 %, adherencia parcial (45%; en cuanto a la calidad de vida relacionada con la salud, el 27 % tuvo un bajo nivel; respecto a la correlación de Spearman, se estableció un coeficiente de -0,315 con una significancia de p=0,00, donde el número negativo es reflejo de la naturaleza de las escalas con las que fueron medidas las variables, por lo que la correlación es positiva, significativa, pero numéricamente modesta. Conclusión: la asociación entre adherencia al tratamiento y calidad de vida relacionada con la salud evidencia en una correlación estadísticamente significativa, pero catalogada como modesta, siendo estos resultados coherentes con la multidimensionalidad de los fenómenos.

  11. Angular and linear momentum of excited ferromagnets

    NARCIS (Netherlands)

    Yan, P.; Kamra, A.; Cao, Y.; Bauer, G.E.W.

    2013-01-01

    The angular momentum vector of a Heisenberg ferromagnet with isotropic exchange interaction is conserved, while under uniaxial crystalline anisotropy the projection of the total spin along the easy axis is a constant of motion. Using Noether's theorem, we prove that these conservation laws persist

  12. Angular distribution in ternary cold fission

    International Nuclear Information System (INIS)

    Delion, D.S.; J.W. Goethe Univ., Frankfurt; Sandulescu, A.; J.W. Goethe Univ., Frankfurt; Greiner, W.

    2003-01-01

    We describe the spontaneous ternary cold fission of 252 Cf, accompanied by 4 He, 10 Be and 14 C. The light cluster decays from the first resonant eigenstate in the Coulomb potential plus a harmonic oscillator potential. We have shown that the angular distribution of the emitted light particle is strongly connected with its deformation and the equatorial distance. (author)

  13. Probabilistic calculation for angular dependence collision

    International Nuclear Information System (INIS)

    Villarino, E.A.

    1990-01-01

    This collision probabilistic method is broadly used in cylindrical geometry (in one- or two-dimensions). It constitutes a powerful tool for the heterogeneous Response Method where, the coupling current is of the cosine type, that is, without angular dependence at azimuthal angle θ and proportional to μ (cosine of the θ polar angle). (Author) [es

  14. Heteromodal conceptual processing in the angular gyrus.

    Science.gov (United States)

    Bonner, Michael F; Peelle, Jonathan E; Cook, Philip A; Grossman, Murray

    2013-05-01

    Concepts bind together the features commonly associated with objects and events to form networks in long-term semantic memory. These conceptual networks are the basis of human knowledge and underlie perception, imagination, and the ability to communicate about experiences and the contents of the environment. Although it is often assumed that this distributed semantic information is integrated in higher-level heteromodal association cortices, open questions remain about the role and anatomic basis of heteromodal representations in semantic memory. Here we used combined neuroimaging evidence from functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI) to characterize the cortical networks underlying concept representation. Using a lexical decision task, we examined the processing of concepts in four semantic categories that varied on their sensory-motor feature associations (sight, sound, manipulation, and abstract). We found that the angular gyrus was activated across all categories regardless of their modality-specific feature associations, consistent with a heteromodal account for the angular gyrus. Exploratory analyses suggested that categories with weighted sensory-motor features additionally recruited modality-specific association cortices. Furthermore, DTI tractography identified white matter tracts connecting these regions of modality-specific functional activation with the angular gyrus. These findings are consistent with a distributed semantic network that includes a heteromodal, integrative component in the angular gyrus in combination with sensory-motor feature representations in modality-specific association cortices. Copyright © 2013 Elsevier Inc. All rights reserved.

  15. INVESTIGATION OF ANGULAR BALL BEARING WEAR

    Directory of Open Access Journals (Sweden)

    A. L. Savchenko

    2006-01-01

    Full Text Available Wearing process of balls in an angular ball bearing has been investigated in the paper. Force affecting a separator from the side of balls is determined theoretically. Wear rate may be calculated with a formula for abrasive wear while substituting numerical parameter values of the investigated ball bearing for formula symbols.

  16. Canonical three-body angular basis

    International Nuclear Information System (INIS)

    Matveenko, A.V.

    2001-01-01

    Three-body problems are basic for the quantum mechanics of molecular, atomic, or nuclear systems. We demonstrate that their variational solution for rotational states can be greatly simplified. A special choice of coordinates (hyperspherical) and of the kinematics (body-fixed coordinate frame) allows one to choose basis functions in a form that makes the angular coupling trivial. (author)

  17. Temperature and angular momentum dependence of the ...

    Indian Academy of Sciences (India)

    Temperature and angular momentum dependence of the quadrupole deformation is studied in the middle of the sd-shell for 28Si and 27Si isotopes using the spherical shell model approach. The shell model calculations have been performed using the standard universal sd-shell (USD) interaction and the canonical ...

  18. Angular momentum gated neutron evaporation studies

    International Nuclear Information System (INIS)

    Banerjee, K.; Kundu, S.; Rana, T.K.; Bhattacharya, C.; Mukherjee, G.; Gohil, M.; Meena, J.K.; Pandey, R.; Pai, H.; Dey, A.; Biswas, M.; Mukhopadhyay, S.; Pandit, D.; Pal, S.; Banerjee, S.R.; Bhattacharya, S.; Bandhopadhyay, T.

    2010-01-01

    The inverse level density parameter k (k = A/a, where A is the mass number of the compound nucleus)is investigated as a function of angular momentum by measuring γ-ray fold gated neutron evaporation spectrum in 4 He + 115 In fusion reaction using 35 MeV 4 He ion beam from VECC K130 cyclotron

  19. Angular-momentum-bearing modes in fission

    International Nuclear Information System (INIS)

    Moretto, L.G.; Peaslee, G.F.; Wozniak, G.J.

    1989-03-01

    The angular-momentum-bearing degrees of freedom involved in the fission process are identified and their influence on experimental observables is discussed. The excitation of these modes is treated in the ''thermal'' limit, and the resulting distributions of observables are calculated. Experiments demonstrating the role of these modes are presented and discussed. 61 refs., 12 figs

  20. Angular Intermittency and Analytical QCD Predictions

    CERN Document Server

    Chekanov, S.V.

    1997-01-01

    We present a comparison of local multiplicity fluctuations in angular phase-space intervals with first-order QCD predictions. The data are based on 810k hadronic events at 91.2 GeV collected with the L3 detector at LEP during 1994.

  1. Angular momentum transfer in incomplete fusion

    Indian Academy of Sciences (India)

    Keywords. Heavy-ion reactions; incomplete fusion; isomeric cross-section ratio; 12C, 16O beams; 93Nb; 89Y targets; angular momentum. ... R Tripathi1 A Goswami1. Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India; School of Studies in Physics, Vikram University, Ujjain 456 010, India ...

  2. Temperature and angular momentum dependence of the ...

    Indian Academy of Sciences (India)

    Abstract. Temperature and angular momentum dependence of the quadrupole deformation is studied in the middle of the sd-shell for 28Si and 27Si isotopes using the spherical shell model ... Department of Physics, University of Kashmir, Srinagar 190 006, India; Inter-University Accelerator Centre, New Delhi 110 067, India ...

  3. On the angular momentum in star formation

    International Nuclear Information System (INIS)

    Horedt, G.P.

    1978-01-01

    The author discusses the rotation of interstellar clouds which are in a stage immediately before star formation. Cloud collisions seem to be the principal cause of the observed rotation of interstellar clouds. The rotational motion of the clouds is strongly influenced by turbulence. Theories dealing with the resolution of the angular momentum problem in star formation are classified into five major groups. The old idea that the angular momentum of an interstellar cloud passes during star formation into the angular momentum of double star systems and/or circumstellar clouds, is developed. It is suggested that a rotating gas cloud contracts into a ring-like structure which fragments into self-gravitating subcondensations. By collisions and gas accretion these subcondensations accrete into binary systems surrounded by circumstellar clouds. Using some rough approximations the authors find analytical expressions for the semi-major axis of the binary system and for the density of the circumstellar clouds as a function of the initial density and of the initial angular velocity of an interstellar cloud. The obtained values are well within the observational limits. (Auth.)

  4. A Novel Permanent Magnetic Angular Acceleration Sensor

    Directory of Open Access Journals (Sweden)

    Hao Zhao

    2015-07-01

    Full Text Available Angular acceleration is an important parameter for status monitoring and fault diagnosis of rotary machinery. Therefore, we developed a novel permanent magnetic angular acceleration sensor, which is without rotation angle limitations and could directly measure the instantaneous angular acceleration of the rotating system. The sensor rotor only needs to be coaxially connected with the rotating system, which enables convenient sensor installation. For the cup structure of the sensor rotor, it has a relatively small rotational inertia. Due to the unique mechanical structure of the sensor, the output signal of the sensor can be directed without a slip ring, which avoids signal weakening effect. In this paper, the operating principle of the sensor is described, and simulated using finite element method. The sensitivity of the sensor is calibrated by torsional pendulum and angle sensor, yielding an experimental result of about 0.88 mV/(rad·s−2. Finally, the angular acceleration of the actual rotating system has been tested, using both a single-phase asynchronous motor and a step motor. Experimental result confirms the operating principle of the sensor and indicates that the sensor has good practicability.

  5. Variation in angular velocity and angular acceleration of a particle in rectilinear motion

    International Nuclear Information System (INIS)

    Mashood, K K; Singh, V A

    2012-01-01

    We discuss the angular velocity and angular acceleration associated with a particle in rectilinear motion with constant acceleration. The discussion was motivated by an observation that students and even teachers have difficulty in ascribing rotational motion concepts to a particle when the trajectory is a straight line. We present some details of our observations. A formal derivation of ω and α is presented which reveals ‘surprising’ and non-intuitive aspects, namely non-monotonic behaviour with an associated extremum. The special case of constant velocity is studied and we find that angular acceleration associated with it also has an extremum. We discuss a plausible source of difficulty. (paper)

  6. Mapping of micro and Small branch of industrial enterprises located in the cities of Agudo and Silveira Martins – RS

    Directory of Open Access Journals (Sweden)

    Carla Hartmann Sturm

    2016-06-01

    Full Text Available In the development of a country are the companies responsible for creating jobs, pay taxes and thus cause the economic and regional development. In Brazil, most of these institutions is made up of micro enterprises and small that often struggling to survive in the market. Therefore, it is necessary investments and public incentives to encourage their development making them competitive. In this sense, this article aims to develop a mapping of micro and small enterprises in the industrial sector in the cities of Agudo and Silveira Martins – Rio Grande do Sul (RS. For this, we used a descriptive research on the purposes and literature as to the means being prepared a questionnaire for collecting data from the sample studied. As results obtained ten micro companies and three small businesses were found in Agudo – RS, and the main industries are the timber industry and the manufacture of bakery products, influenced 65.5% of the employees of micro and small companies analyzed in the municipality. Already in Silveira Martins – RS were found seven micro and small enterprises, where six are classified as micro company and only one as small business. It was found also that the main industrial branch is the timber sector (six companies, in which 96% of employees work in any activity related to wood processing.

  7. COMPARTIMENTAÇÃO DE UNIDADES GEOMORFOLÓGICAS DO MUNICÍPIO DE AGUDO-RS

    Directory of Open Access Journals (Sweden)

    Gerson Jonas Schirmer

    2013-12-01

    Full Text Available Este artigo apresenta um mapeamento geomorfológico do município de Agudo-RS, onde as unidades geomorfológicas representam a integração dos elementos físicos da área de estudo, frente aos processos envolvidos na organização da paisagem local. A metodologia é fundamentada nas contribuições da ciência geográfica, utilizando como ferramenta SIGs (Sistemas de Informação Geográfica.  Através de uma representação de síntese, foram definidos cinco unidades geomorfológicas, Rampas deColúvio-Aluvio do Rio Jacuí, Rampas de Colúvio-Alúvio de Arroios, Colinas Alúvio-Coluvionar, Colinas Vulcânicas do Planalto Serra Geral e Associação de Morros e Morrotes do Rebordo do Planalto, que caracterizam a paisagem do município de Agudo.

  8. Fisiopatología, evaluación y manejo del dolor agudo en pediatría

    Directory of Open Access Journals (Sweden)

    Tatiana Pabón-Henao

    2015-12-01

    Full Text Available El manejo del dolor agudo en los niños es deficiente, como lo afirma en el 2013 un estudio de la AMA (American Medical Association: la población pediátrica recibe entre 50% y 90% menos analgésicos que los adultos, es decir, no se tiene claridad en la fisiopatología, abordaje y manejo del dolor en los niños. El dolor puede clasificarse según su tiempo de duración, intensidad y mecanismo fisiopatoló-gico que lo desencadena (nociceptivo y neuropático. Teniendo en cuenta que la fisiopatología del dolor no varía con la edad pero sí como el paciente pediátrico lo manifieste, se requiere conocer el abordaje y manejo según su intensidad. Por lo tanto, el objetivo de esta revisión se enfoca en el estado del arte y en generar claridad de los aspectos críticos como son el conocimiento de la fisiopatología, valoración adecuada y el manejo no farmacológico y farmacológico del dolor agudo en pediatría.

  9. Caracterización del infarto agudo del miocardio en mujeres atendidas en el hospital Ernesto Guevara

    Directory of Open Access Journals (Sweden)

    Zailit González Cruz

    2014-08-01

    Full Text Available En Las Tunas han aumentado las cifras de mujeres afectadas por infarto agudo del miocardio (IMA, con una tasa de mortalidad superior a la media nacional. A pesar de ello, no existen estudios publicados que describan el comportamiento de esta entidad en las mujeres tuneras. Se realizó un estudio transversal descriptivo en el servicio de cardiología del hospital provincial de Las Tunas, “Dr. Ernesto Guevara de la Serna”, entre los años 2009 al 2011, con el objetivo de caracterizar el infarto agudo del miocardio en el sexo femenino. La muestra estuvo constituida por 181 mujeres admitidas en el servicio por esta entidad, diagnosticadas según los criterios establecidos. Para el análisis de los resultados se utilizó la estadística descriptiva, con valores absolutos y porcientos. En la muestra de estudio prevaleció el IMA CEST, de topografía anterior y no trombolizado. La disfunción ventricular izquierda constituyó la complicación más frecuente. Predominaron como factores de riesgo asociados la hipertensión arterial, las dislipidemias, el hábito de fumar y la diabetes mellitus.

  10. Development of Angular Motion, Angular Momentum, and Torque Knowledge Bases for an Intelligent Physics Tutoring System

    National Research Council Canada - National Science Library

    Eason, Michael

    1998-01-01

    .... The knowledge base developed in this project provides the physics backbone for the rest of the tutoring system by generating the necessary equations and solution graphs to solve selected angular motion...

  11. Desenlaces clínicos en una cohorte de pacientes con síndrome coronario agudo y administración intracoronaria de tirofiban

    Directory of Open Access Journals (Sweden)

    Julián Ochoa

    2015-01-01

    Conclusiones: El uso de tirofiban intracoronario e intravenoso en pacientes con evento coronario agudo no se relacionó con menor incidencia de MACE ni eventos de sangrado en esta población, sin embargo, se deben tener en cuenta otras variables clínicas y de severidad del evento coronario no medidas que pudieron influir en los resultados.

  12. Algunos factores de riesgo que favorecen la aparición del infarto agudo del miocardio

    Directory of Open Access Journals (Sweden)

    Lourdes Rodríguez Domínguez

    1998-06-01

    Full Text Available Se realiza un estudio descriptivo referido a los pacientes que sufrieron infarto agudo del miocardio del área de salud Policlínico Comunitario Docente "Nguyen Van Troi" y fueron atendidos en el Hospital Clinicoquirúrgico Docente "Freyre de Andrade" para conocer algunos factores de riesgo que favorecen la aparición de éste y sus diferencias según el sexo. Se observa que el sexo masculino estuvo más afectado que el femenino con una relación 2 a 1 en pacientes de 70 años y más, además, el 80,95 % era sedentario, el 76,19 % presentaba hipercolesterolemia, el 66,6 % era hipertenso y los fumadores constituían el 52,38 % de la muestra. Se constata que el sexo femenino estaba más afectado de diabetes mellitus (29,76 % y la viudez predominó en este grupo, en relación con el estado civil casado en el maculino, y su relación con el sexo fue significativa; el 21,43 % de las mujeres no terminó el nivel primario; el 50 % de los hombres tenía más de 3 factores de riesgoA descriptive study of patients who suffered from acute myocardial infarction at the health area of the "Nguyen Van Troi" Community Teaching Polyclinic, and who received medical attention al the "Freyre de Andrade" Hospital, was conducted to know some risk factors favoring its appearance and its differences according to sex. It was observed that the male sex was more affected than the female sex in a ratio 2:1 among patients aged 70 and over. 80.95 % of them were sedentary, 76,19 % had hypercholesterolemia, 66,6 % were hypertensive, and 52,38 % were smokers. It was demonstrated that women were more affected with diabetes mellitus (29,76 %, and that there were more widows than married men. 21,43 % of women didn’t finish the primary education. 50 % of the men had more than 3 risk factors

  13. Sobrecarga en el cuidador de paciente con infarto agudo al miocardio

    Directory of Open Access Journals (Sweden)

    Norma Lizbeth Ávila Estrada

    2012-12-01

    Full Text Available Introducción: Las enfermedades cardiovasculares constituyen la primera causa de muerte en México, generando un impacto social persistente que involucra tanto a quien lo padece como a quienes lo rodean. Objetivo: Determinar el nivel de sobrecarga en el cuidador con pacientes de infarto agudo miocardio (IAM en el Hospital General de Durango. Materiales y Métodos: Estudio descriptivo no experimental, transversal; 54 familiares de pacientes hospitalizados con diagnóstico de IAM en el Hospital General Durango, no probabilístico por conveniencia. Resultados: La edad promedio en el estudio es de 18 a 25 años correspondiendo al 37%, de los cuales el 66.7% es femenino, 59.3% tiene escolaridad de medios superior, el 72.2% son de procedencia de la ciudad de Durango, con respecto al parentesco del cuidador con la persona que demanda cuidado esta es en su mayoría hijo con un porcentaje de 20.4%; también un alto porcentaje 81.5 % convive con el enfermo y un 63.0% trabaja fuera del hogar, y un 27.8% ha dejado el trabajo parcialmente; el resultado revelo que existe un nivel medio de sobrecarga del 44.2% en el cuidador primario. Discusión y Conclusiones: Son identificables los niveles de sobrecarga en cuidadores de pacientes con IAM generando una serie de variables que alteran la relación cuidador-paciente trayendo consigo una sobrecarga de tipo medio. (Rev Cuid 2012;3(3:342-8.Palabras clave: Cuidados Posteriores, Absentismo Familiar, Atención no Remunerada. (Fuente: DeCS BIREME.

  14. Edad avanzada y factores de riesgo para infarto agudo de miocardio

    Directory of Open Access Journals (Sweden)

    M. A. Ciruzzi

    2002-12-01

    Full Text Available Este estudio caso-control analizó en los sujetos añosos el rol de los factores de riesgo coronario en el desarrollo del infarto agudo de miocardio (IAM, estableció la naturaleza de esta asociación y el grado de riesgo. Los datos fueron obtenidos en una investigación que incluyó 1060 casos y 1071 controles, realizada en 35 unidades coronarias de centros médicos de Argentina entre noviembre de 1991 y agosto de 1994. Nuestro análisis se basó en la información de los sujetos mayores de 65 años. Los casos fueron 427 pacientes con un primer IAM. Los controles fueron 396 sujetos sin evidencias clinicas de enfermedad cardiovascular, seleccionados en los mismos centros que los casos. Los Odds Ratios (OR y su intervalo de confianza del 95% (IC 95% se obtuvieron mediante un análisis de regresión logística, incluyendo variables como la edad, educación, clase social, tabaquismo, antecedente de diabetes o hipertensión arterial, índice de masa corporal e historia familiar de enfermedad coronaria. Los factores de riesgo relacionados independientemente con IAM fueron los siguientes: hipercolesterolemia (colesterol sérico > 240 mg/dl: OR=1.76 (IC 95%: 1.25-2.49, tabaquismo: OR=1.6 (IC 95%: 1.06-2.4, hipertensión arterial: OR=2.05 (IC 95%: 1.51-2.73, diabetes OR=1.71 (IC 95%: 1.12-2.70, historia de un familiar con enfermedad coronaria: OR=1.36 (IC 95%: 0.93-1.97 y de dos o más familiares: OR=2.63 (IC 95%: 1.21-5.71. Este estudio, confirma en los sujetos de edad avanzada la importancia de la hipercolesterolemia, del tabaquismo, la hipertesión arterial, la diabetes y la historia familiar de enfermedad coronaria como factores de riesgo de IAM

  15. EFECTO AGUDO DEL EJERCICIO FISICO EN LA INTELIGENCIA Y LA MEMORIA EN HOMBRES, SEGUN LA EDAD

    Directory of Open Access Journals (Sweden)

    Yorleny Alfaro Chavarría

    2001-12-01

    Full Text Available Con muy diversas investigaciones se han demostrado los efectos agudos del ejercicio físico en los procesos cognitivos (memoria, inteligencia, tiempo de reacción, creatividad, etc. según la edad. Sin embargo, gran cantidad de variables se ven involucradas en los diferentes tratamientos. Es, por esto, que se pretendió realizar una investigación específica y homogénea, de manera que los cambios obtenidos en la inteligencia y la memoria en las diferentes edades se deban al tratamiento en sí, y no a la influencia de otros factores. Para esto, se aplicó un tratamiento que consistió en realizar ejercicio aeróbico subiendo y bajando una grada de 27 cm. de alto x 30 cm. de ancho, durante 10 minutos, a una intensidad del 60% de la frecuencia cardíaca máxima. Los sujetos fueron 100 hombres con edades entre la niñez y la edad avanzada. Se ubicaron en 5 subgrupos que realizaron un 'pretest', el tratamiento indicado y un 'postest'. Las pruebas fueron el test de Raven para la inteligencia y el Verbal Script Digit Span para medir la memoria auditiva. Para conocer los resultados se realizó un análisis de varianza Anova 5x2x2 para grupos independientes, utilizando los puntajes obtenidos en las diferencias entre 'pretest' y 'postest', para ambas variables, con su respectivo 'post-hoc' en los casos requeridos. Y para determinar la magnitud del cambio, se obtuvo los tamaños del efecto. Se encontró que con ejercicio aeróbico submaximal, la totalidad de los grupos etarios mejoraron sus resultados en el test de memoria con mejor resultado los de edades promedio de 25.5 y 63.25 años. Para la variable de inteligencia los sujetos de 34.75 y 52.4 años en promedio lograron los mejores resultados, mientras que los jóvenes de 25.5 años y los adultos mayores no tuvieron cambio significativo en este aspecto.

  16. EJERCICIO Y LA DETECCION DEL MAL AGUDO DE MONTAÑA GRAVE

    Science.gov (United States)

    Garófoli, Adrián; Montoya, Paola; Elías, Carlos; Benzo, Roberto

    2012-01-01

    El Mal Agudo de Montaña (MAM) es un conjunto de síntomas inespecíficos padecidos por sujetos que ascienden rápidamente desde baja a alta altura sin adecuada aclimatación. Usualmente es autolimitado, pero las formas graves (edema pulmonar y cerebral) pueden causar la muerte. La hipoxemia exagerada en reposo está relacionada con el desarrollo de MAM pero su valor predictivo es limitado. Dado que el ejercicio en altura se acompaña de mayor hipoxemia y síntomas, postulamos el valor predictivo de un simple test de ejercicio para pronosticar MAM grave. Se estudió el valor predictivo de la saturación de oxígeno en reposo y ejercicio submáximo a 2 700m y 4 300m en 63 sujetos que ascendían al cerro Aconcagua (6 962m). Se consideró desaturación de oxígeno con ejercicio a una disminución >=5% respecto al reposo. Se utilizó la escala de Lake-Louise para establecer la presencia de MAM grave. 6 sujetos presentaron MAM grave (9.5%) y requirieron evacuación. La saturación de oxígeno en reposo a 2 700m no fue significativa para clasificar sujetos que luego desarrollaron MAM grave. Por el contrario, la asociación de desaturación durante el ejercicio a 2 700m más la saturación inapropiada en reposo a 4 300m fue significativa para clasificar a los sujetos que desarrollaron MAM grave con un valor predictivo positivo de 80% y un valor predictivo negativo del 97%. Nuestros resultados son relevantes para el montañismo y sugieren la adición de un simple test de ejercicio en la predicción del MAM grave. PMID:20228017

  17. Incidencia y manejo del infarto agudo miocárdico con elevación del segmento ST, Hospital José María Velasco Ibarra, 2014

    OpenAIRE

    Gustavo Moreno Martín; César Santiago Mejía Moya; Miriam Ivonne Fernández Nieto; Rosendo Sánchez Núñez

    2016-01-01

    Introducción: El término infarto agudo de miocardio, hace referencia a un riego sanguíneo insuficiente con lesión miocárdica, producido por una obstrucción en una o varias arterias coronarias. Objetivo: Determinar la incidencia y manejo del infarto agudo miocárdico en el Hospital José María Velazco Ibarra, en el período enero a junio del 2014. Métodos: Se realizó un estudio observacional descriptivo y retrospectivo en 52 pacientes con infarto agudo miocárdico con elevación del segment...

  18. Multichannel system for angular distribution measurements

    International Nuclear Information System (INIS)

    Burjan, V.; Kroha, V.; Putz, K.

    A description is given of the individual blocks of the spectrometric apparatus used for measuring the angular distribution of particle spectra and excitation functions of (d,p) reactions at an electrostatic accelerator and the U-120 M cyclotron, both operating at the Nuclear Physics Institute of the Czechoslovak Academy of Sciences at Rez. Main attention was devoted to attaining maximum energy resolution at a high measurement efficiency, this by installing 8 independent spectrometric chains allowing simultaneous measurement of angular distribution in 8 points of the beam. The semiconductor detectors were cooled to -40 degC to -60 degC, which significantly reduced the level of inherent detector noise. An energy resolution of 13 keV was attained using Tesla detectors at a particle energy of 11 MeV. A brief review of data processing and software is given. (B.S.)

  19. Coherent Control of Photoelectron Wavepacket Angular Interferograms

    OpenAIRE

    Hockett, Paul; Wollenhaupt, Matthias; Baumert, Thomas

    2015-01-01

    Coherent control over photoelectron wavepackets, via the use of polarization-shaped laser pulses, can be understood as a time and polarization-multiplexed process. In this work, we investigate this multiplexing via computation of the observable photoelectron angular interferograms resulting from multi-photon atomic ionization with polarization-shaped laser pulses. We consider the polarization sensitivity of both the instantaneous and cumulative continuum wavefunction; the nature of the cohere...

  20. Angular distribution of laser ablation plasma

    International Nuclear Information System (INIS)

    Kondo, K.; Kanesue, T.; Dabrowski, R.; Okamura, M.

    2010-01-01

    An expansion of a laser induced plasma is fundamental and important phenomena in a laser ion source. To understand the expanding direction, an array of Langmuir probes were employed. The chosen ion for the experiment was Ag 1+ which was created by a second harmonics of a Nd-YAG laser. The obtained angular distribution was about ±10 degree. This result also indicates a proper positioning of a solenoid magnet which enhances ion beam current.

  1. Continuum angular distributions in the transition regions

    International Nuclear Information System (INIS)

    Kalbach, C.

    1993-01-01

    One of the open questions from the 1988 published systematics of continuum angular distributions in light particle reactions is addressed. Evidence for a smooth transition in the systematics at incident energies of ∼125 MeV is summarized, and appropriate revisions to the global parameterization are proposed. Applying similar changes to the second-order term helps to remove problems noted in the literature with low-energy (N,α) reactions

  2. Coincident-inclusive electrofission angular correlations

    International Nuclear Information System (INIS)

    Arruda Neto, J.D.T.

    1983-08-01

    A method for the joint analysis of coincident and inclusive electrofission data, in order to minimize effects of the model dependence of data interpretation, is developed. Explicit calculations of the (e,e'f) angular correlations are presented. The potentialities of the method to the study of sub- and near-barrier properties of the fission process, and to the study of the giant resonances fission mode, are discussed. (Author) [pt

  3. Spatial angular compounding of photoacoustic images

    OpenAIRE

    Kang, Hyun Jae; Bell, Muyinatu A Lediju; Guo, Xiaoyu; Boctor, Emad M.

    2016-01-01

    Photoacoustic (PA) images utilize pulsed lasers and ultrasound transducers to visualize targets with higher optical absorption than the surrounding medium. However, they are susceptible to acoustic clutter and background noise artifacts that obfuscate biomedical structures of interest. We investigated three spatial-angular compounding methods to improve PA image quality for biomedical applications, implemented by combining multiple images acquired as an ultrasound probe was rotated about the ...

  4. Orbital angular momentum light in microscopy.

    Science.gov (United States)

    Ritsch-Marte, Monika

    2017-02-28

    Light with a helical phase has had an impact on optical imaging, pushing the limits of resolution or sensitivity. Here, special emphasis will be given to classical light microscopy of phase samples and to Fourier filtering techniques with a helical phase profile, such as the spiral phase contrast technique in its many variants and areas of application.This article is part of the themed issue 'Optical orbital angular momentum'. © 2017 The Author(s).

  5. Continuous particle spectra and their angular distributions

    International Nuclear Information System (INIS)

    Sastry, Ch.V.; Jain, R.K.; Rama Rao, J.; Ernst, J.; Machner, H.

    1996-01-01

    The angular distribution of continuous particle spectra in pre-equilibrium reactions is still an unsolved problem, particularly so at forward angles. In the present work, the angular distributions of alpha particles emitted in (α, α',x) reactions in the target elements gold and rhodium have been studied in detail. Alpha particle beams of energy 60 MeV from the Variable Energy Cyclotron of Calcutta were used in these experiments. The theoretical calculations were done using an extended exciton model of Kalbach incorporated into the Computer Code PRECO-D2. The formalism used in the exciton model was modified to include division of pre equilibrium cross section into multi-step direct (MSD) and multi-step compound (MSC) components. These MSD and MSC cross sections were used to calculate the angular distributions in terms of Legendre polynomials whose coefficients are given by simple phenomenological relations. Even with a reasonable set of parameters, the agreement between theory and experiment was far from satisfactory at forward angles. Similar conclusion was also drawn in the case of continuous particle spectra of deuterons in (d, d'x) reactions at 25 MeV in various targets. (author). 10 refs., 2 figs

  6. The Cosmology Large Angular Scale Surveyor

    Science.gov (United States)

    Harrington, Kathleen; Marriage, Tobias; Ali, Aamir; Appel, John; Bennett, Charles; Boone, Fletcher; Brewer, Michael; Chan, Manwei; Chuss, David T.; Colazo, Felipe; hide

    2016-01-01

    The Cosmology Large Angular Scale Surveyor (CLASS) is a four telescope array designed to characterize relic primordial gravitational waves from inflation and the optical depth to reionization through a measurement of the polarized cosmic microwave background (CMB) on the largest angular scales. The frequencies of the four CLASS telescopes, one at 38 GHz, two at 93 GHz, and one dichroic system at 145217 GHz, are chosen to avoid spectral regions of high atmospheric emission and span the minimum of the polarized Galactic foregrounds: synchrotron emission at lower frequencies and dust emission at higher frequencies. Low-noise transition edge sensor detectors and a rapid front-end polarization modulator provide a unique combination of high sensitivity, stability, and control of systematics. The CLASS site, at 5200 m in the Chilean Atacama desert, allows for daily mapping of up to 70% of the sky and enables the characterization of CMB polarization at the largest angular scales. Using this combination of a broad frequency range, large sky coverage, control over systematics, and high sensitivity, CLASS will observe the reionization and recombination peaks of the CMB E- and B-mode power spectra. CLASS will make a cosmic variance limited measurement of the optical depth to reionization and will measure or place upper limits on the tensor-to-scalar ratio, r, down to a level of 0.01 (95% C.L.).

  7. The Cosmology Large Angular Scale Surveyor (CLASS)

    Science.gov (United States)

    Harrington, Kathleen; Marriange, Tobias; Aamir, Ali; Appel, John W.; Bennett, Charles L.; Boone, Fletcher; Brewer, Michael; Chan, Manwei; Chuss, David T.; Colazo, Felipe; hide

    2016-01-01

    The Cosmology Large Angular Scale Surveyor (CLASS) is a four telescope array designed to characterize relic primordial gravitational waves from in ation and the optical depth to reionization through a measurement of the polarized cosmic microwave background (CMB) on the largest angular scales. The frequencies of the four CLASS telescopes, one at 38 GHz, two at 93 GHz, and one dichroic system at 145/217 GHz, are chosen to avoid spectral regions of high atmospheric emission and span the minimum of the polarized Galactic foregrounds: synchrotron emission at lower frequencies and dust emission at higher frequencies. Low-noise transition edge sensor detectors and a rapid front-end polarization modulator provide a unique combination of high sensitivity, stability, and control of systematics. The CLASS site, at 5200 m in the Chilean Atacama desert, allows for daily mapping of up to 70% of the sky and enables the characterization of CMB polarization at the largest angular scales. Using this combination of a broad frequency range, large sky coverage, control over systematics, and high sensitivity, CLASS will observe the reionization and recombination peaks of the CMB E- and B-mode power spectra. CLASS will make a cosmic variance limited measurement of the optical depth to reionization and will measure or place upper limits on the tensor-to-scalar ratio, r, down to a level of 0.01 (95% C.L.).

  8. Verification of angular dependence in MOSFET detector

    International Nuclear Information System (INIS)

    Souza, Clayton H.; Shorto, Julian M.B.; Siqueira, Paulo T.D.; Nunes, Maíra G.; Silva Junior, Iremar A.; Yoriyaz, Hélio

    2017-01-01

    In vivo dosimetry is an essential tool for quality assurance programs, being a procedure commonly performed with thermoluminescent dosimeters (TLDs) or diodes. However, a type of dosimeter that has increasing popularity in recent years is the metal-oxide-semiconductor field effect transistor (MOSFET) detector. MOSFET dosimeters fulfill all the necessary characteristics to realize in vivo dosimetry since it has a small size, good precision and feasibility of measurement, as well as easy handling. Nevertheless, its true differential is to allow reading of the dose in real time, enabling immediate intervention in the correction of physical parameters deviations and anticipation of small anatomical changes in a patient during treatment. In order for MOSFET dosimeter to be better accepted in clinical routine, information reporting performance should be available frequently. For this reason, this work proposes to verify reproducibility and angular dependence of a standard sensitivity MOSFET dosimeter (TN-502RD-H) for Cs-137 and Co-60 sources. Experimental data were satisfactory and MOSFET dosimeter presented a reproducibility of 3.3% and 2.7% (1 SD) for Cs-137 and Co-60 sources, respectively. In addition, an angular dependence of up to 6.1% and 16.3% for both radioactive sources, respectively. It is conclusive that MOSFET dosimeter TN-502RD-H has satisfactory reproducibility and a considerable angular dependence, mainly for the Co-60 source. This means that although precise measurements, special attention must be taken for applications in certain anatomical regions in a patient. (author)

  9. Angular craniometry in craniocervical junction malformation.

    Science.gov (United States)

    Botelho, Ricardo Vieira; Ferreira, Edson Dener Zandonadi

    2013-10-01

    The craniometric linear dimensions of the posterior fossa have been relatively well studied, but angular craniometry has been poorly studied and may reveal differences in the several types of craniocervical junction malformation. The objectives of this study were to evaluate craniometric angles compared with normal subjects and elucidate the main angular differences among the types of craniocervical junction malformation and the correlation between craniocervical and cervical angles. Angular craniometries were studied using primary cranial angles (basal and Boogard's) and secondary craniocervical angles (clivus canal and cervical spine lordosis). Patients with basilar invagination had significantly wider basal angles, sharper clivus canal angles, larger Boogard's angles, and greater cervical lordosis than the Chiari malformation and control groups. The Chiari malformation group does not show significant differences when compared with normal controls. Platybasia occurred only in basilar invagination and is suggested to be more prevalent in type II than in type I. Platybasic patients have a more acute clivus canal angle and show greater cervical lordosis than non-platybasics. The Chiari group does not show significant differences when compared with the control, but the basilar invagination groups had craniometric variables significantly different from normal controls. Hyperlordosis observed in the basilar inavagination group was associated with craniocervical kyphosis conditioned by acute clivus canal angles.

  10. Verification of angular dependence in MOSFET detector

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Clayton H.; Shorto, Julian M.B.; Siqueira, Paulo T.D.; Nunes, Maíra G.; Silva Junior, Iremar A.; Yoriyaz, Hélio, E-mail: chsouza@usp.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2017-07-01

    In vivo dosimetry is an essential tool for quality assurance programs, being a procedure commonly performed with thermoluminescent dosimeters (TLDs) or diodes. However, a type of dosimeter that has increasing popularity in recent years is the metal-oxide-semiconductor field effect transistor (MOSFET) detector. MOSFET dosimeters fulfill all the necessary characteristics to realize in vivo dosimetry since it has a small size, good precision and feasibility of measurement, as well as easy handling. Nevertheless, its true differential is to allow reading of the dose in real time, enabling immediate intervention in the correction of physical parameters deviations and anticipation of small anatomical changes in a patient during treatment. In order for MOSFET dosimeter to be better accepted in clinical routine, information reporting performance should be available frequently. For this reason, this work proposes to verify reproducibility and angular dependence of a standard sensitivity MOSFET dosimeter (TN-502RD-H) for Cs-137 and Co-60 sources. Experimental data were satisfactory and MOSFET dosimeter presented a reproducibility of 3.3% and 2.7% (1 SD) for Cs-137 and Co-60 sources, respectively. In addition, an angular dependence of up to 6.1% and 16.3% for both radioactive sources, respectively. It is conclusive that MOSFET dosimeter TN-502RD-H has satisfactory reproducibility and a considerable angular dependence, mainly for the Co-60 source. This means that although precise measurements, special attention must be taken for applications in certain anatomical regions in a patient. (author)

  11. Decúbito prono en pacientes con síndrome de distrés respiratorio agudo

    Directory of Open Access Journals (Sweden)

    Mariano Setten

    Full Text Available RESUMEN El síndrome de distrés respiratorio agudo ocupa gran atención en la unidad de cuidados intensivos. A pesar del amplio conocimiento alcanzado sobre la fisiopatología de éste síndrome, el enfoque en la unidad de cuidados intensivos consiste, en gran parte, en un tratamiento de soporte vital y en evitar los efectos secundarios de las terapéuticas invasivas. Si bien, durante los últimos 20 años, se generaron grandes avances en ventilación mecánica con un impacto importante sobre la mortalidad, ésta continúa siendo elevada. Una característica de los pacientes con síndrome de distrés respiratorio agudo, sobre todo los más severos, es la presencia de hipoxemia refractaria debido a la existencia de shunt, pudiendo requerir tratamientos adicionales a la ventilación mecánica, entre ellos la ventilación mecánica en decúbito prono. Este método, recomendado para mejorar la oxigenación por primera vez en 1974, puede ser implementado fácilmente en cualquier unidad de cuidados intensivos con personal entrenado. El decúbito prono tiene un sustento bibliográfico sumamente robusto. Varios ensayos clínicos randomizados han demostrado el efecto del decúbito prono sobre la oxigenación en pacientes con síndrome de distrés respiratorio agudo medida a través de la relación PaO2/FiO2 e incluso su impacto en el aumento de la sobrevida de estos pacientes. Los integrantes del Comité de Kinesiología Intensivista de la Sociedad Argentina de Terapia Intensiva realizaron una revisión narrativa con el objetivo de exponer la evidencia disponible en relación a la implementación del decúbito prono, los cambios producidos en el sistema respiratorio por la aplicación de la maniobra y su impacto sobre la mortalidad. Por último, se sugerirán lineamientos para la toma de decisiones.

  12. ANALISIS COSTE-EFECTIVIDAD DE DISTINTOS MÉTODOS DE DIAGNÓSTICO POR IMAGEN DEL TROMBOEMBOLISMO PULMONAR AGUDO

    Directory of Open Access Journals (Sweden)

    Stella Maris Batallés

    2009-01-01

    Full Text Available La técnica diagnóstica óptima para detectar tromboembolismo pulmonar agudo (TEP continúa en discusión. La gammagrafía pulmonar de ventilación/perfusión ha sido el examen preferido durante décadas, pero con el advenimiento de nuevas pruebas de imágenes las posibilidades diagnósticas se ampliaron, siendo necesario evaluarlas desde la perspectiva del coste y de la efectividad. El objetivo de este trabajo fue evaluar distintos métodos de diagnóstico por imagen para detectar TEP agudo para determinar el más coste-efectivo. Métodos. Análisis de coste-efectividad (CE empleando un árbol de decisiones para modelar distintas pruebas (centellograma V/Q, TC helicoidal, angiografía por tomografía computada multidetector (TCMD, resonancia magnética por imágenes (RMI y arteriografía convencional. Se obtuvieron valores de sensibilidad, especificidad, valor predictivo positivo (VPP y negativo (VPN de las pruebas diagnósticas. Resultado medido: "caso detectado de TEP". Los costes evaluados fueron los directos, expresados en euros (t, incluyendo los secundarios a las complicaciones de los métodos diagnósticos. Se realizó un análisis de sensibilidad de una vía para evaluar la robustez de las conclusiones. Resultados. No se eliminaron pruebas por dominancia extendida. La tasa cruda de CE para TCMD fue de 486 t por cada caso de TEP detectado. El coste marginal entre la TC helicoidal y el centellograma V/Q fue de 103 t para detectar 8 casos adicionales de TEP, mientras que el coste marginal entre la TCMD y la TC helicoidal fue de 229 t para detectar un caso adicional de TEP. Conclusiones. La prueba diagnóstica más coste-efectiva fue la TCMD, hallazgo que mostró robustez en el análisis de sensibilidad. Sin embargo, el análisis de C-E incremental nos mostró que la TCMD costó 229 t más respeto a la TC helicoidal para lograr una mínima mejora en la efectividad de la prueba (detección de TEP agudo. El alto valor predictivo negativo de

  13. Diagnósticos de enfermería al alta hospitalaria en personas con Síndrome Coronario Agudo

    Directory of Open Access Journals (Sweden)

    Clara Inés Padilla García

    2017-04-01

    Full Text Available Introducción: Enfermería juega un rol fundamental en las diferentes etapas de la atención de las personas con síndrome coronario agudo, entre ellas el egreso hospitalario. Brindar cuidado acorde a las necesidades propias de estas personas, requiere de la identificación de los principales diagnósticos de enfermería. Objetivo: Determinar la prevalencia de diagnósticos de Enfermería de las personas con síndrome coronario agudo al momento del alta hospitalaria. Metodología: Estudio de corte transversal en 196 personas hospitalizadas por el evento de interés, se utilizó instrumento de valoración focalizada que evaluaba las características definitorias de los diagnósticos de enfermería: ansiedad, afrontamiento ineficaz, disposición para mejorar la religiosidad, disposición para mejorar los conocimientos, intolerancia a la actividad; los cuales fueron identificados como prioritarios según la literatura científica y por consenso de expertos. Para determinar la prevalencia de los diagnósticos se realizó análisis de definición y características definitorias. Resultados: Se evidenció como principal problema de la población de estudio los conocimientos deficientes, seguido de la intolerancia a la actividad y la ansiedad. De igual forma se logró identificar diagnósticos positivos como la disposición para mejorar los conocimientos y la religiosidad. Conclusiones: El presente trabajo nos permitió identificar necesidades reales y reconocer factores protectores al momento del alta hospitalaria en personas que han vivido un evento coronario agudo, lo cual constituye un punto de partida para el diseño de planes de cuidado y la puesta en marcha de intervenciones que conduzcan a mejorar la situación de salud de este grupo de personas.

  14. El padecimiento de los enfermos con Síndrome Coronario Agudo The illness of the patients with Acute Coronary Syndrome

    Directory of Open Access Journals (Sweden)

    Joaquín Jesús Blanca Gutiérrez

    2006-06-01

    Full Text Available Introducción: Si revisamos la literatura enfermera publicada sobre el Síndrome Coronario Agudo, cuatro son los grandes temas que han definido a nuestros estudios: los protocolos de actuación, las vías clínicas, los casos clínicos y la metodología del proceso enfermero. Casi siempre ha sido la propia enfermedad y no tanto el padecimiento del paciente la auténtica protagonista de nuestros escritos. Con nuestro presente trabajo pretendemos adentrarnos en aquellas dimensiones más subjetivas de la enfermedad, es decir, en el padecimiento y en el "sickness". Metodología: Se trata de un estudio cualitativo de tipo descriptivo en el que presentamos algunos de los datos más significativos de los relatos de nuestros pacientes con Síndrome Coronario Agudo. Resultados: los hemos agrupado en siete categorías temáticas: dolor, miedo, impacto en la familia, impacto en la actividad laboral, impacto en las actividades recreativas, impacto en el rol de cuidador y posibles causas.  Discusión: Se comparan los resultados con los de otros trabajos que han estudiado también el Síndrome Coronario Agudo desde diversas perspectivas: la sexualidad, los descriptores verbales, el dolor, y los testimonios de mujeres mexicanas que han pasado por esta misma situación.Introduction. The revision of the nursing literature published about the Acute Coronary Syndrome shows that four are the big themes that have defined to our studies: the performance protocols, the clinical roads, the clinical cases and the methodology of the nursing process. The disease and not so much the patient’s illness has been the authentic main character of our writings. With our present work we seek to go into in those more subjective dimensions of the pain, the illness and the sickness.  Methodology. It is a qualitative study of descriptive type, in that we present some of the most significant data in the stories of our patients with Acute Coronary Syndrome.  Results. We have

  15. Efeito agudo do alongamento estático sobre a força muscular dinâmica no exercício supino reto realizado em dois diferentes ângulos articulares

    Directory of Open Access Journals (Sweden)

    Eurico Peixoto César

    2015-12-01

    Full Text Available O objetivo foi determinar os efeitos agudos do alongamento estático (AL sobre os níveis de amplitude de movimento (ADM da cintura escapular e sobre 10 repetições máximas (10-RM no supino reto em dois ângulos articulares. Onze homens (28.32 ± 5.4 anos; 1.73 ± 0.1 m; 72.14 ± 15.3 kg foram submetidos aleatoriamente à condição controle (CC e experimental (2 séries de 30 s de AL passivos para o peitoral e tríceps. A ADM da cintura escapular no movimento de abdução horizontal do ombro foi analisada através da fotogrametria usando ferramenta de dimensão angular do CorelDRAW®. Os testes de 10-RM foram feitos no supino reto com barra livre com randomização para amplitude total e limitada a 90° de flexão do cotovelo. A confiabilidade da ADM da cintura escapular e das 10-RM nas duas amplitudes diferentes foi alta (R> 0.95. A ANOVA de duas entradas com medidas repetidas nos dois fatores com post-hoc de Bonferroni indicou uma interação significativa, com aumento da ADM (p= 0.029 após AL. Não foi encontrada diferença significativa para 10-RM e volume total em nenhuma das angulações e condições testadas. Conclui-se que volumes reduzidos de AL aumentaram significativamente a ADM sem promover prejuízo no desempenho da força dinâmica realizada em diferentes ângulos articulares.

  16. Qualidade de vida de clientes pós-infarto agudo do miocárdio Calidad de vida de los clientes pós-infarto agudo del miocardio Client's quality of life after myocardial infarction

    Directory of Open Access Journals (Sweden)

    Joselany Afio Caetano

    2007-03-01

    Full Text Available Objetivou-se neste estudo avaliar a qualidade de vida de clientes que sofreram infarto agudo do miocárdio. A amostra constou de 30 clientes selecionados pela busca em prontuários de uma unidade cardiológica, que nos permitiu a identificação e localização desses clientes, internados no ano de 2004. Para coleta de dados utilizamos a Escala de Qualidade de Vida de Flanagan e o tratamento estatístico com desvio-padrão. Os resultados mostraram maior índice de respostas nos níveis "indiferentes" a "pouco satisfeitos" em suas qualidades de vida. A relação interpessoal apresentou o mais alto índice de satisfação, contrariando o bem-estar físico e material, com o mais baixo índice de satisfação. Concluiu-se que a avaliação da qualidade de vida de clientes que sofreram infarto agudo do miocárdio se mostra comprometida, o que vem corroborar outros estudos anteriormente realizados.El objetivo del estudio fue evaluar la calidad de vida de los clientes que han sufrido infarto agudo del miocardio. La muestra ha consistido de 30 pacientes escogidos por la búsqueda en historias clínicas de una unidad cardiológica, que nos permitió la identificación y localización de estos clientes, internados en el año 2004. Para la colecta de los datos utilizamos la Escala de Calidad de Vida de Flanagan y el tratamiento estadístico con desvío medio. Los resultados muestran mayor índice de respuestas en los niveles "indiferentes" a "poco satisfechos" en sus calidades de vida. La relación interpersonal presentó el más alto índice de satisfacción, contrariando el bienestar físico y material, con el más bajo índice de satisfacción. Ha concluído que la evaluación de la calidad de vida de clientes que sufrieron infarto agudo del miocardio muéstrase comprometida, lo que viene a confirmar otros estudios anteriormente realizados.This study evaluates the quality of life of clients who suffered myocardial infarction. The sample consisted of 30

  17. Características del síndrome coronario agudo en pacientes ancianos españoles

    OpenAIRE

    Cabrerizo-García, José Luis; Zalba-Etayo, Begoña

    2013-01-01

    Objetivos Los pacientes ancianos que sufren un síndrome coronario agudo (SCA) de alto riesgo están escasamente representados en trabajos de investigación y guías de práctica clínica. El objetivo del trabajo es conocer las características del SCA de alto riesgo en pacientes de >75 años.Métodos Estudio prospectivo descriptivo de 161 pacientes de >75 años con SCA con y sin elevación del segmento ST de alto riesgo según criterios de la ACA/AHA. Se recogieron variables analíticas, electrocar...

  18. Efeito Agudo da Pressao Positiva Continua sobre a Pressao de Pulso na Insuficiencia Cardiaca Cronica

    Directory of Open Access Journals (Sweden)

    Monica Quintao

    2014-03-01

    Full Text Available Fundamento: Pacientes com insuficiência cardíaca (IC apresentam disfunção ventricular esquerda e redução da pressão arterial média (PAM. O aumento do estímulo adrenérgico causa vasoconstrição e resistência dos vasos, mantendo a PAM, enquanto aumenta a resistência vascular periférica e a rigidez dos vasos condutores. O aumento da pressão de pulso (PP reflete a complexa interação do coração com os sistemas arteriais e venosos. O aumento da PP é um importante marcador de risco em pacientes com insuficiência cardíaca crônica (ICC. A ventilação não invasiva (VNI tem sido utilizada para IC aguda descompensada para melhorar a congestão e a ventilação pelos efeitos respiratórios e hemodinâmicos. No entanto, nenhum desses estudos relatou o efeito da VNI na PP. Objetivo: O objetivo deste estudo foi determinar os efeitos agudos da VNI com CPAP (pressão positiva contínua nas vias aéreas sobre a PP em pacientes ambulatoriais com ICC. Métodos: Seguindo um protocolo randomizado, duplo-cego, cruzado e controlado com placebo, 23 pacientes com ICC (17 homens, 60 ± 11 anos, IMC 29 ± 5 kg/cm2, classes II e III da NYHA foram submetidos à CPAP via máscara nasal durante 30 minutos na posição reclinada. A pressão da máscara foi de 6 cmH2O, enquanto o placebo foi fixado em 0-1 cmH2O. PP e outras variáveis hemodinâmicas não invasivas foram avaliadas antes, durante e depois do placebo e do modo CPAP. Resultados: A CPAP diminuiu a frequência cardíaca de repouso (pré: 72 ± 9; pós 5 min: 67 ± 10 bpm , p < 0,01 e PAM (CPAP: 87 ± 11; controle 96 ± 11 mmHg , p < 0,05 pós 5 min. A CPAP diminuiu a PP (CPAP: 47 ± 20 pré para 38 ± 19 mmHg pós; controle: 42 ± 12 mmHg, pré para 41 ± 18 pós p < 0,05 pós 5 min. Conclusão: A VNI com CPAP diminuiu a pressão de pulso em pacientes com ICC estável. Ensaios clínicos futuros devem investigar se esse efeito está associado com melhora no desfecho clínico.

  19. Beriberi cardiovascular agudo (Shoshin-Beriberi Acute cardiovascular beriberi (shoshin-beriberi

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    Osvaldo D. López Gastón

    2002-08-01

    Full Text Available El beriberi, la deficiencia de tiamina (B1, fue referido en el siglo XVII en la literatura asiática, y pue de manifestarse por síntomas neurológicos (beriberi «seco» donde la neuropatía periférica y la debilidad muscular son los más destacados y/o síntomas cardiovasculares (beriberi «húmedo», con una variante «clásica» donde es predominante la insuficiencia cardíaca derecha con índice cardíaco (IC normal o alto y otra aguda o «shoshin-beriberi», caracterizada por insuficiencia biventricular, acidosis láctica e IC variable y que sin tratamiento precoz evoluciona al colapso vascular y la muerte. Se presenta una paciente de 58 años y antecedente de enolismo, con disnea, oliguria, sígnos de fallo cardíaco biventricular con patrón hiperdinámico, acidosis metabólica, disfunción tubular renal y lactacidemia de 5.6 mEq/L. El exámen neurológico mostró una polineuropatía sensitiva, simétrica y distal en MMII y deterioro cognitivo con sígnos frontales. Horas después de la administración de 100 mg de tiamina ev. se observó una manifiesta mejoría de los valores hemodinámicos y el estado ácido-base. Se concluye que si bien el beriberi cardiovascular agudo es de presentación infrecuente hay consenso en que además es subdiagnosticado. La presencia de acidosis láctica o cuadro de insuficiencia cardíaca de alto volumen minuto sin etiología manifiesta, en pacientes con riesgo de deficiencia de B1, es suficiente para hacer la prueba terapéutica.Beriberi (BB, thiamine deficiency, has been described in the Asian literature in the 17th century and is characterized by peripheral neuropathy and muscle weakness, also called «dry» beriberi (BB to differentiate it from «wet» BB, with essentially cardiovascular manifestations. Wet can be either «classic» wet BB in which signs and symptons of right-sided heart failure with normal or high cardiac output are the presenting features or the «shoshin» BB variant with severe

  20. Angular-Momentum Evolution in Laser-Plasma Accelerators

    CERN Document Server

    Thaury, Cédric; Corde, Sébastien; Lehe, Rémi; Le Bouteiller, Madeleine; Ta Phuoc, Kim; Davoine, Xavier; Rax, J. M.; Rousse, Antoine; Malka, Victor

    2013-01-01

    The transverse properties of an electron beam are characterized by two quantities, the emittance which indicates the electron beam extent in the phase space and the angular momentum which allows for non-planar electron trajectories. Whereas the emittance of electron beams produced in laserplasma accelerator has been measured in several experiments, their angular momentum has been scarcely studied. It was demonstrated that electrons in laser-plasma accelerator carry some angular momentum, but its origin was not established. Here we identify one source of angular momentum growth and we present experimental results showing that the angular momentum content evolves during the acceleration.

  1. Etiologia, diagnóstico e tratamento dos pacientes com abdome agudo obstrutivo atendidos na URE – CHS

    Directory of Open Access Journals (Sweden)

    Beatriz Pierro dos Santos

    2014-10-01

    Full Text Available Introdução: Abdome agudo obstrutivo é definido como uma síndrome clínica caracterizada por um obstáculo à progressão do conteúdo do trato gastrointestinal; Objetivos: O objetivo deste estudo foi avaliar os pacientes admitidos na URE-CHS com o diagnóstico inicial de abdome agudo obstrutivo; Metodologia:No período entre setembro/2013 e junho/2014, foram avaliados consecutivamente, 30 pacientes com o diagnóstico de oclusão intestinal, sendo 20 homense 10 mulherescom a média de idade de 49 anos; Resultados: A radiografia do abdome foi realizada em todos os pacientes. O tratamento consistiu na correção dos distúrbios hidroeletrolíticos e quando houve persistência dos sinais, foi realizada a laparotomia diagnóstica. Destes, 4 se recuperaram com o tratamento clínico, 1 foi submetido a retirada de fecaloma. Os outros 25 foram encaminhados para o tratamento cirúrgico. A média do tempo decorrido entre a admissão e a cirurgia foi de 33 horas; Conclusões: Dos submetidos ao tratamento cirúrgico, 2 apresentaram isquemia mesentérica e 23 obstrução mecânica, destes, 12obstruídos por neoplasias, 9 por hérnias incisionais encarceradas, 1 por bridas e 1 por volvo de sigmóide. Nospacientes estudados, encontramos 7 óbitos. Com base nesses dados, foi proposto um protocolo de atendimento para esses pacientes.

  2. SÍNDROME CORONARIO AGUDO DE CAUSA NO ATEROESCLERÓTICA / Acute coronary syndrome of non-atherosclerotic origin

    Directory of Open Access Journals (Sweden)

    Yuri Medrano Plana

    2013-10-01

    Full Text Available Resumen La embolia coronaria es una causa poco frecuente de síndrome coronario agudo. Dentro de los varios tipos de material embólico se encuentra el de origen tumoral. Estos émbolos pueden ocasionar isquemia miocárdica de intensidad variable, desde angina de pecho hasta infarto agudo de miocardio o incluso, muerte súbita. Se presenta una mujer de 58 años de edad, que presentó episodios de angina inestable con cambios eléctricos sin factores de riesgo y sin antecedentes de cardiopatía isquémica, que en la coronariografía se demostró la presencia de arterias coronarias normales. El ecocardiograma transesofágico informó imagen ecogénica polilobulada y pediculada hacia la superficie septal de la aurícula izquierda (posible mixoma, sin observarse trombos en las cavidades cardíacas. La paciente fue operada (exéresis quirúrgica del tumor, evolucionó favorablemente y fue trasladada a su hospital de origen 72 horas después. / Abstract Coronary embolism is a rare cause of acute coronary syndrome. Among the various types of embolic material is that of tumoral origin. These emboli can cause myocardial ischemia of varying intensity, from angina to acute myocardial infarction or even sudden death. The case of a 58-year-old woman who presented unstable angina episodes with electrical changes with no risk factors and no history of ischemic heart disease is presented. By means of coronary angiography, the presence of normal coronary arteries was showed. Transesophageal echocardiography showed the echogenic polylobulated and pedicled image towards the septal surface of the left atrium (possible myxoma; thrombi in the cardiac chambers were not observed. The patient underwent surgery (surgical removal of the tumor, had a good progress and was transferred to her hospital of origin 72 hours later.

  3. ANGULAR MOMENTUM AND GALAXY FORMATION REVISITED

    International Nuclear Information System (INIS)

    Romanowsky, Aaron J.; Fall, S. Michael

    2012-01-01

    Motivated by a new wave of kinematical tracers in the outer regions of early-type galaxies (ellipticals and lenticulars), we re-examine the role of angular momentum in galaxies of all types. We present new methods for quantifying the specific angular momentum j, focusing mainly on the more challenging case of early-type galaxies, in order to derive firm empirical relations between stellar j * and mass M * (thus extending earlier work by Fall). We carry out detailed analyses of eight galaxies with kinematical data extending as far out as 10 effective radii, and find that data at two effective radii are generally sufficient to estimate total j * reliably. Our results contravene suggestions that ellipticals could harbor large reservoirs of hidden j * in their outer regions owing to angular momentum transport in major mergers. We then carry out a comprehensive analysis of extended kinematic data from the literature for a sample of ∼100 nearby bright galaxies of all types, placing them on a diagram of j * versus M * . The ellipticals and spirals form two parallel j * -M * tracks, with log-slopes of ∼0.6, which for the spirals are closely related to the Tully-Fisher relation, but for the ellipticals derives from a remarkable conspiracy between masses, sizes, and rotation velocities. The ellipticals contain less angular momentum on average than spirals of equal mass, with the quantitative disparity depending on the adopted K-band stellar mass-to-light ratios of the galaxies: it is a factor of ∼3-4 if mass-to-light ratio variations are neglected for simplicity, and ∼7 if they are included. We decompose the spirals into disks and bulges and find that these subcomponents follow j * -M * trends similar to the overall ones for spirals and ellipticals. The lenticulars have an intermediate trend, and we propose that the morphological types of galaxies reflect disk and bulge subcomponents that follow separate, fundamental j * -M * scaling relations. This provides a

  4. ANGULAR MOMENTUM AND GALAXY FORMATION REVISITED

    Energy Technology Data Exchange (ETDEWEB)

    Romanowsky, Aaron J. [University of California Observatories, 1156 High Street, Santa Cruz, CA 95064 (United States); Fall, S. Michael [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)

    2012-12-15

    Motivated by a new wave of kinematical tracers in the outer regions of early-type galaxies (ellipticals and lenticulars), we re-examine the role of angular momentum in galaxies of all types. We present new methods for quantifying the specific angular momentum j, focusing mainly on the more challenging case of early-type galaxies, in order to derive firm empirical relations between stellar j{sub *} and mass M{sub *} (thus extending earlier work by Fall). We carry out detailed analyses of eight galaxies with kinematical data extending as far out as 10 effective radii, and find that data at two effective radii are generally sufficient to estimate total j{sub *} reliably. Our results contravene suggestions that ellipticals could harbor large reservoirs of hidden j{sub *} in their outer regions owing to angular momentum transport in major mergers. We then carry out a comprehensive analysis of extended kinematic data from the literature for a sample of {approx}100 nearby bright galaxies of all types, placing them on a diagram of j{sub *} versus M{sub *}. The ellipticals and spirals form two parallel j{sub *}-M{sub *} tracks, with log-slopes of {approx}0.6, which for the spirals are closely related to the Tully-Fisher relation, but for the ellipticals derives from a remarkable conspiracy between masses, sizes, and rotation velocities. The ellipticals contain less angular momentum on average than spirals of equal mass, with the quantitative disparity depending on the adopted K-band stellar mass-to-light ratios of the galaxies: it is a factor of {approx}3-4 if mass-to-light ratio variations are neglected for simplicity, and {approx}7 if they are included. We decompose the spirals into disks and bulges and find that these subcomponents follow j{sub *}-M{sub *} trends similar to the overall ones for spirals and ellipticals. The lenticulars have an intermediate trend, and we propose that the morphological types of galaxies reflect disk and bulge subcomponents that follow

  5. Research on static angular stiffness measurement of flexible joint

    Directory of Open Access Journals (Sweden)

    Yongchao HUANG

    2016-10-01

    Full Text Available Measurement accuracy of the angular stiffness of flexible joint is directly related to the control accuracy and sensitivity of gyro, but the traditional measurement methods have many problems. According to the principle of angular stiffness measurement of flexible joint, two static measurement methods of angular stiffness are proposed based on different loading ways, namely mechanical loading angular stiffness measurement and piezoelectric loading angular stiffness measurement. The mechanical loading angular stiffness measurement system is built by using a motor driven indexing feeding tilting table, the measure experiment if the angular stiffness of flexible joint is conducted, and the angular stiffness of flexible joint is measured. For the excessive fluctuation problem of the measure result in mechanical load test, a piezoelectric loading structure is designed and a measurement method employing piezoelectric actuator is proposed for angular stiffness measurement of flexible joint. Based on ANSYS Workbench, the displacement output of the piezoelectric loading structure is analyzed by simulations. The simulation results illustrate that the displacement output meets the requirement of static loading angular stiffness measurement of flexible joint, and the theoretical feasibility of piezoelectric loading angular stiffness measurement method is validated.

  6. Angular Rate Estimation Using a Distributed Set of Accelerometers

    Directory of Open Access Journals (Sweden)

    Sung Kyung Hong

    2011-11-01

    Full Text Available A distributed set of accelerometers based on the minimum number of 12 accelerometers allows for computation of the magnitude of angular rate without using the integration operation. However, it is not easy to extract the magnitude of angular rate in the presence of the accelerometer noises, and even worse, it is difficult to determine the direction of a rotation because the angular rate is present in its quadratic form within the inertial measurement system equations. In this paper, an extended Kalman filter scheme to correctly estimate both the direction and magnitude of the angular rate through fusion of the angular acceleration and quadratic form of the angular rate is proposed. We also provide observability analysis for the general distributed accelerometers-based inertial measurement unit, and show that the angular rate can be correctly estimated by general nonlinear state estimators such as an extended Kalman filter, except under certain extreme conditions.

  7. Angular Position Tracking Control of a Quadcopter

    OpenAIRE

    T. V. Glazkov; A. E. Golubev

    2017-01-01

    The paper dwells on tracking the quad-copter angular position with desired quality parameters of transient processes. The aerial vehicle is considered as a rigid body with six degrees of freedom.  A full rigid body quad-copter mathematical model is considered without the assumption of smallness of the Euler angles.Among the most well known methods of non-linear stabilization are feedback linearization and backstepping. The backstepping approach allows us to have an effective solution of the s...

  8. Angular Momentum Sensitive Two-Center Interference

    Science.gov (United States)

    Ilchen, M.; Glaser, L.; Scholz, F.; Walter, P.; Deinert, S.; Rothkirch, A.; Seltmann, J.; Viefhaus, J.; Decleva, P.; Langer, B.; Knie, A.; Ehresmann, A.; Al-Dossary, O. M.; Braune, M.; Hartmann, G.; Meissner, A.; Tribedi, L. C.; AlKhaldi, M.; Becker, U.

    2014-01-01

    In quantum mechanics the Young-type double-slit experiment can be performed with electrons either traveling through a double slit or being coherently emitted from two inversion symmetric molecular sites. In the latter one the valence photoionization cross sections of homonuclear diatomic molecules were predicted to oscillate over kinetic energy almost 50 years ago. Beyond the direct proof of the oscillatory behavior of these photoionization cross sections σ, we show that the angular distribution of the emitted electrons reveals hitherto unexplored information on the relative phase shift between the corresponding partial waves through two-center interference patterns.

  9. Projection of angular momentum via linear algebra

    Science.gov (United States)

    Johnson, Calvin W.; O'Mara, Kevin D.

    2017-12-01

    Projection of many-body states with good angular momentum from an initial state is usually accomplished by a three-dimensional integral. We show how projection can instead be done by solving a straightforward system of linear equations. We demonstrate the method and give sample applications to 48Cr and 60Fe in the p f shell. This new projection scheme, which is competitive against the standard numerical quadrature, should also be applicable to other quantum numbers such as isospin and particle number.

  10. The angular momentum of isolated white dwarfs

    Directory of Open Access Journals (Sweden)

    Brassard P.

    2013-03-01

    Full Text Available This is a very brief report on an ongoing program aimed at mapping the internal rotation profiles of stars through asteroseismology. Three years ago, we developed and applied successfully a new technique to the pulsating GW Vir white dwarf PG 1159−035, and were able to infer that it rotates very slowly and rigidly over some 99% of its mass. We applied the same approach to the three other GW Vir pulsators with available rotational splitting data, and found similar results. We discuss the implications of these findings on the question of the angular momentum of white dwarfs resulting from single star evolution.

  11. Models and theory for precompound angular distributions

    Energy Technology Data Exchange (ETDEWEB)

    Blann, M.; Pohl, B.A.; Remington, B.A. (Lawrence Livermore National Lab., CA (USA)); Scobel, W.; Trabandt, M. (Hamburg Univ. (Germany, F.R.). 1. Inst. fuer Experimentalphysik); Byrd, R.C. (Los Alamos National Lab., NM (USA)); Foster, C.C. (Indiana Univ. Cyclotron Facility, Bloomington, IN (USA)); Bonetti, R.; Chiesa, C. (Milan Univ. (Italy). Ist. di Fisica Generale Applicata); Grimes, S.M. (Ohio Univ

    1990-06-06

    We compare angular distributions calculated by folding nucleon- nucleon scattering kernels, using the theory of Feshbach, Kerman and Koonin, and the systematics of Kalbach, with a wide range of data. The data range from (n,xn) at 14 MeV incident energy to (p,xn) at 160 MeV incident energy. The FKK theory works well with one adjustable parameter, the depth of the nucleon-nucleon interaction potential. The systematics work well when normalized to the hybrid model single differential cross section prediction. The nucleon- nucleon scattering approach seems inadequate. 9 refs., 10 figs.

  12. O que todo intensivista deve saber a respeito da síndrome do desconforto respiratório agudo e dano alveolar difuso?

    Directory of Open Access Journals (Sweden)

    Fernando Rios

    2017-09-01

    Full Text Available RESUMO A síndrome do desconforto respiratório agudo é um desafio para o intensivista. A característica principal desta doença aguda é o dano alveolar difuso, presente em cerca de metade dos pacientes com a síndrome. É claro que o suporte respiratório à síndrome do desconforto respiratório agudo tem melhorado gradualmente nas últimas décadas. É também evidente que todos estes procedimentos são benéficos, já que reduzem a lesão pulmonar e mantêm o paciente vivo. Isto deve ser interpretado como uma estratégia de ganho de tempo, até que o fator desencadeante ou de risco causal melhore, assim como a tempestade inflamatória diminua e o pulmão se cure. Por outro lado, todos - exceto dois tratamentos farmacológicos (bloqueadores neuromusculares e esteroides - são incapazes de melhorar o desfecho da síndrome do desconforto respiratório agudo. A hipótese de que os resultados farmacológicos negativos podem ser explicados pela heterogeneidade histológica da síndrome do desconforto respiratório agudo tem sido apoiada pelas recentes demonstrações de que a síndrome com dano alveolar difuso tem característica clínico-patológica específica. O dano alveolar difuso é um diagnóstico patológico, e a biópsia pulmonar a céu aberto (a técnica mais comum para obtenção de tecido pulmonar tem efeitos colaterais graves, sendo necessário que se desenvolvam biomarcadores substitutos para o dano alveolar difuso. O objetivo desta revisão é discutir três tópicos relacionados à síndrome do desconforto respiratório agudo: o relacionamento entre a síndrome do desconforto respiratório agudo e o dano alveolar difuso; como o dano alveolar difuso pode ser representado no quadro clínico; e como o enriquecimento pode melhorar os resultados de estudos clínicos farmacológicos realizados com pacientes com a síndrome e com dano alveolar difuso.

  13. A proposed measurement of optical orbital and spin angular momentum and its implications for photon angular momentum

    Science.gov (United States)

    Leader, Elliot

    2018-04-01

    The expression for the total angular momentum carried by a laser optical vortex beam, splits, in the paraxial approximation, into two terms which seem to represent orbital and spin angular momentum respectively. There are, however, two very different competing versions of the formula for the spin angular momentum, one based on the use of the Poynting vector, as in classical electrodynamics, the other related to the canonical expression for the angular momentum which occurs in Quantum Electrodynamics. I analyze the possibility that a sufficiently sensitive optical measurement could decide which of these corresponds to the actual physical angular momentum carried by the beam.

  14. The Cosmology Large Angular Scale Surveyor (CLASS)

    Science.gov (United States)

    Cleary, Joseph

    2018-01-01

    The Cosmology Large Angular Scale Surveyor (CLASS) is an array of four telescopes designed to measure the polarization of the Cosmic Microwave Background. CLASS aims to detect the B-mode polarization from primordial gravitational waves predicted by cosmic inflation theory, as well as the imprint left by reionization upon the CMB E-mode polarization. This will be achieved through a combination of observing strategy and state-of-the-art instrumentation. CLASS is observing 70% of the sky to characterize the CMB at large angular scales, which will measure the entire CMB power spectrum from the reionization peak to the recombination peak. The four telescopes operate at frequencies of 38, 93, 145, and 217 GHz, in order to estimate Galactic synchrotron and dust foregrounds while avoiding atmospheric absorption. CLASS employs rapid polarization modulation to overcome atmospheric and instrumental noise. Polarization sensitive cryogenic detectors with low noise levels provide CLASS the sensitivity required to constrain the tensor-to-scalar ratio down to levels of r ~ 0.01 while also measuring the optical depth the reionization to sample-variance levels. These improved constraints on the optical depth to reionization are required to pin down the mass of neutrinos from complementary cosmological data. CLASS has completed a year of observations at 38 GHz and is in the process of deploying the rest of the telescope array. This poster provides an overview and update on the CLASS science, hardware and survey operations.

  15. Electromagnetic angular positioner based on DC micromotor

    Directory of Open Access Journals (Sweden)

    Bodnicki Maciej

    2018-01-01

    Full Text Available The presented works concerned launching of an angular positioner powered by an electromagnetic actuator, designed for performing angular micromovements within a range of few microradians. The principle of operation is based on balancing the electromagnetic torque of the motor with a torque that is twisting a compliant element. As electrodynamic actuators have no distinguished controlled positions, therefore in typical positioning systems desired positions are obtained applying a closed-loop position control. Usually, such systems employ also a feedback (dumping related to velocity of the moving elements, what simplifies forming of dynamics of the system. The design of the physical model employs a DC micromotor, whose rotor is coupled with a torsional torquemeter. A feedback signal is generated by resistive strain gauges. The paper presents a mathematical model of the positioning system, results of simulation study as well as results of experimental study. The simulation study indicates that it is possible to select such design features and such type of the micoromotor that a high dynamics of positioning is ensured.

  16. Practical scaling law for photoelectron angular distributions

    International Nuclear Information System (INIS)

    Guo Dongsheng; Zhang Jingtao; Xu Zhizhan; Li Xiaofeng; Fu Panming; Freeman, R.R.

    2003-01-01

    A practical scaling law that predicts photoelectron angular distributions (PADs) is derived using angular distribution formulas which explicitly contain spontaneous emission. The scaling law is used to analyze recent PAD measurements in above-threshold ionization, and to predict results of future experiments. Our theoretical and numerical studies show that, in the non-relativistic regime and long-wavelength approximation, the shapes of PADs are determined by only three dimensionless numbers: (1) u p ≡U p /(ℎ/2π)ω, the ponderomotive number (ponderomotive energy in units of laser photon energy); (2) ε b ≡E b /(ℎ/2π)ω, the binding number (atomic binding energy in units of the laser photon energy); (3) j, the absorbed-photon number. The scaling law is shown to be useful in predictions of results from strong-field Kapitza-Dirac effect measurements; specifically, the application of this scaling law to recently reported Kapitza-Dirac diffraction is discussed. Possible experimental tests to verify the scaling law are suggested

  17. Orbital angular momentum of general astigmatic modes

    International Nuclear Information System (INIS)

    Visser, Jorrit; Nienhuis, Gerard

    2004-01-01

    We present an operator method to obtain complete sets of astigmatic Gaussian solutions of the paraxial wave equation. In case of general astigmatism, the astigmatic intensity and phase distribution of the fundamental mode differ in orientation. As a consequence, the fundamental mode has a nonzero orbital angular momentum, which is not due to phase singularities. Analogous to the operator method for the quantum harmonic oscillator, the corresponding astigmatic higher-order modes are obtained by repeated application of raising operators on the fundamental mode. The nature of the higher-order modes is characterized by a point on a sphere, in analogy with the representation of polarization on the Poincare sphere. The north and south poles represent astigmatic Laguerre-Gaussian modes, similar to circular polarization on the Poincare sphere, while astigmatic Hermite-Gaussian modes are associated with points on the equator, analogous to linear polarization. We discuss the propagation properties of the modes and their orbital angular momentum, which depends on the degree of astigmatism and on the location of the point on the sphere

  18. [Sensitivity of four representative angular cephalometric measures].

    Science.gov (United States)

    Xü, T; Ahn, J; Baumrind, S

    2000-05-01

    Examined the sensitivity of four representative cephalometric angles to the detection of different vectors of craniofacial growth. Landmark coordinate data from a stratified random sample of 48 adolescent subjects were used to calculate conventional values for changes between the pretreatment and end-of-treatment lateral cephalograms. By modifying the end-of-treatment coordinate values appropriately, the angular changes could be recalculated reflecting three hypothetical situations: Case 1. What if there were no downward landmark displacement between timepoints? Case 2. What if there were no forward landmark displacement between timepoints? Case 3. What if there were no Nasion change? These questions were asked for four representative cephalometric angles: SNA, ANB, NAPg and UI-SN. For Case 1, the associations (r) between the baseline and the modified measure for the three angles were very highly significant (P < 0.001) with r2 values no lower than 0.94! For Case 2, however, the associations were much weaker and no r value reached significance. These angular measurements are less sensitive for measuring downward landmark displacement than they are for measuring forward landmark displacement.

  19. Bloqueio do nervo frênico após realização de bloqueio do plexo braquial pela via interescalênica: relato de caso A bloqueo del nervio frénico después de la realización de bloqueo del plexo braquial por la vía interescalénica: relato de caso Phrenic nerve block after interscalene brachial plexus block: case report

    Directory of Open Access Journals (Sweden)

    Luis Henrique Cangiani

    2008-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Bloqueio do nervo frênico é um evento adverso do bloqueio do plexo braquial; entretanto, na sua maioria, sem repercussões clínicas importantes. O objetivo deste relato foi apresentar um caso em que ocorreu bloqueio do nervo frênico, com comprometimento ventilatório, em paciente com insuficiência renal crônica submetido a instalação de fístula arteriovenosa extensa, sob bloqueio do plexo braquial pela via perivascular interescalênica. RELATO DO CASO: Paciente do sexo masculino, 50 anos, tabagista, portador de insuficiência renal crônica em regime de hemodiálise, hipertensão arterial, hepatite C, diabetes mellitus, doença pulmonar obstrutiva crônica, a ser submetido à instalação de fístula arteriovenosa extensa no membro superior direito sob bloqueio de plexo braquial pela via interescalênica. O plexo braquial foi localizado com utilização do estimulador de nervo periférico. Foram injetados 35 mL de uma solução de anestésico local, constituída de uma mistura de lidocaína a 2% com epinefrina a 1:200.000 e ropivacaína a 0,75% em partes iguais. Ao final da injeção o paciente apresentava-se lúcido, porém com dispnéia e predomínio de incursão respiratória intercostal ipsilateral ao bloqueio. Não havia murmúrio vesicular na base do hemitórax direito. A SpO2 manteve-se em 95%, com cateter nasal de oxigênio. Não foi necessária instalação de métodos de auxílio ventilatório invasivo. Radiografia do tórax revelou que o hemidiafragma direito ocupava o 5° espaço intercostal. O quadro clínico foi revertido em três horas. CONCLUSÕES: O caso mostrou que houve paralisia total do nervo frênico com sintomas respiratórios. Apesar de não ter sido necessária terapêutica invasiva para o tratamento, fica o alerta para a restrição da indicação da técnica nesses casos.JUSTIFICATIVA Y OBJETIVOS: El bloqueo del nervio frénico es un evento adverso del bloqueo del plexo braquial, sin

  20. Critique of the angular momentum sum rules and a new angular momentum sum rule

    NARCIS (Netherlands)

    Bakker, B.L.G.; Leader, E.; Trueman, T. L.

    2004-01-01

    We present a study of the tensorial structure of the hadronic matrix elements of the angular momentum operators J. Well known results in the literature are shown to be incorrect, and we have taken pains to derive the correct expressions in three different ways, two involving explicit physical wave

  1. Inefficient Angular Momentum Transport in Accretion Disk Boundary Layers: Angular Momentum Belt in the Boundary Layer

    Science.gov (United States)

    Belyaev, Mikhail A.; Quataert, Eliot

    2018-04-01

    We present unstratified 3D MHD simulations of an accretion disk with a boundary layer (BL) that have a duration ˜1000 orbital periods at the inner radius of the accretion disk. We find the surprising result that angular momentum piles up in the boundary layer, which results in a rapidly rotating belt of accreted material at the surface of the star. The angular momentum stored in this belt increases monotonically in time, which implies that angular momentum transport mechanisms in the BL are inefficient and do not couple the accretion disk to the star. This is in spite of the fact that magnetic fields are advected into the BL from the disk and supersonic shear instabilities in the BL excite acoustic waves. In our simulations, these waves only carry a small fraction (˜10%) of the angular momentum required for steady state accretion. Using analytical theory and 2D viscous simulations in the R - ϕ plane, we derive an analytical criterion for belt formation to occur in the BL in terms of the ratio of the viscosity in the accretion disk to the viscosity in the BL. Our MHD simulations have a dimensionless viscosity (α) in the BL that is at least a factor of ˜100 smaller than that in the disk. We discuss the implications of these results for BL dynamics and emission.

  2. An EM Induction Hi-Speed Rotation Angular Rate Sensor.

    Science.gov (United States)

    Li, Kai; Li, Yuan; Han, Yan

    2017-03-17

    A hi-speed rotation angular rate sensor based on an electromagnetic induction signal is proposed to provide a possibility of wide range measurement of high angular rates. An angular rate sensor is designed that works on the principle of electromagnetism (EM) induction. In addition to a zero-phase detection technique, this sensor uses the feedback principle of magnetic induction coils in response to a rotating magnetic field. It solves the challenge of designing an angular rate sensor that is suitable for both low and high rotating rates. The sensor was examined for angular rate measurement accuracy in simulation tests using a rotary table. The results show that it is capable of measuring angular rates ranging from 1 rps to 100 rps, with an error within 1.8‰ of the full scale (FS). The proposed sensor is suitable to measurement applications where the rotation angular rate is widely varied, and it contributes to design technology advancements of real-time sensors measuring angular acceleration, angular rate, and angular displacement of hi-speed rotary objects.

  3. An EM Induction Hi-Speed Rotation Angular Rate Sensor

    Directory of Open Access Journals (Sweden)

    Kai Li

    2017-03-01

    Full Text Available A hi-speed rotation angular rate sensor based on an electromagnetic induction signal is proposed to provide a possibility of wide range measurement of high angular rates. An angular rate sensor is designed that works on the principle of electromagnetism (EM induction. In addition to a zero-phase detection technique, this sensor uses the feedback principle of magnetic induction coils in response to a rotating magnetic field. It solves the challenge of designing an angular rate sensor that is suitable for both low and high rotating rates. The sensor was examined for angular rate measurement accuracy in simulation tests using a rotary table. The results show that it is capable of measuring angular rates ranging from 1 rps to 100 rps, with an error within 1.8‰ of the full scale (FS. The proposed sensor is suitable to measurement applications where the rotation angular rate is widely varied, and it contributes to design technology advancements of real-time sensors measuring angular acceleration, angular rate, and angular displacement of hi-speed rotary objects.

  4. Incidência de glaucoma agudo primário no Serviço de Glaucoma do Hospital São Geraldo

    OpenAIRE

    Mérula,Rafael Vidal; Cronemberger,Sebastião; Calixto,Nassim

    2008-01-01

    OBJETIVOS: Determinar a incidência do glaucoma agudo primário no Serviço de Glaucoma do Hospital São Geraldo; estabelecer o perfil destes pacientes e identificar possíveis fatores de risco. MÉTODOS: Estudo transversal. Período de análise: setembro/2005 a agosto/2006. Inclusão: diagnóstico de glaucoma agudo primário. Exclusão: presença de catarata que acarrete baixa acuidade visual ou miopização, glaucomas secundários, íris em platô. Foram avaliados: número de atendimentos, incidência de glauc...

  5. Hematologia de tilápia-do-nilo alimentada com suplemento à base de algas frente a desafios de estresse agudo e crônico

    Directory of Open Access Journals (Sweden)

    F. Garcia

    2012-02-01

    Full Text Available Avaliou-se o efeito da suplementação com produto à base de algas, ergosan, em dietas para tilápias Oreochromis niloticus, submetidas ao desafio de estresse agudo e crônico sobre as características hematológicas. O ensaio foi realizado com tilápias jovens (15g em caixas de 500L de capacidade de estocagem, em sistema com recirculação da água, com fluxo constante, na densidade de 35 peixes por caixa. Os peixes foram alimentados com as dietas-teste durante 10 dias e, ao final deste período, voltaram a receber dieta isenta de ergosan, quando foram submetidos aos desafios de estresses agudo e crônico. Utilizou-se o delineamento inteiramente ao acaso (DIC, em esquema fatorial 4x2, sendo testados: quatro porcentagens do suplemento 0; 0,25; 0,5 e 1% de ergosan na ração em dois tipos de estresse, agudo e crônico. Os resultados permitem concluir que os estímulos de estresse aplicados foram capazes de provocar alterações fisiológicas nos peixes, incluindo redução no número de eritrócitos, eritroblastos e leucócitos e aumento do volume corpuscular médio dos eritrócitos. A administração oral de 1% de suplemento durante 10 dias para juvenis de tilápia-do-nilo, em condição de estresse agudo, induz o incremento de 69% no número de trombócitos circulantes.

  6. Presencia y severidad de calcio coronario: su relación con la aparición de eventos coronarios agudos

    Directory of Open Access Journals (Sweden)

    Lázaro E. de la Cruz Avilés

    2012-03-01

    Full Text Available Fundamento: la detección de calcio en las arterias coronarias confirma la presencia de aterosclerosis y ha demostrado ser una herramienta útil para estratificar el riesgo cardiovascular. Objetivo: determinar la relación entre la presencia y severidad de calcio coronario con la aparición de eventos coronarios agudos. Métodos: se realizó un estudio observacional, descriptivo, prospectivo, tipo serie de casos, en el Hospital Universitario Dr. Gustavo Aldereguía Lima de Cienfuegos, entre enero y diciembre de 2008. La serie estuvo conformada por 137 pacientes, en los que se estudió: sexo, antecedentes patológicos personales, cifras de glucemia en ayunas, creatinina, colesterol total y triglicéridos. Los pacientes fueron seguidos durante dos años para evaluar la aparición de eventos coronarios agudos. Resultados: La edad media fue de 53,2±7,4 años, con predominio del sexo masculino (52,5 %. El mayor porciento de pacientes clasificados como de alto riesgo, según la cuantificación del calcio coronario (16,8 % perteneció al sexo masculino, predominando en los mayores de 70 años. La diabetes se relacionó de forma significativa con la severidad del puntaje de calcio. El infarto agudo del miocardio fue más frecuente en pacientes con puntaje de calcio mayor de 400 unidades Agatston. Conclusiones: la aparición de eventos coronarios agudos fue más frecuente en los pacientes de alto riesgo según cuantificación del calcio coronario.

  7. Prevalencia y factores de riesgo del estado confusional agudo en el adulto mayor en una sala de emergencias médicas

    Directory of Open Access Journals (Sweden)

    Jaime Lama Valdivia

    2002-01-01

    Full Text Available Objetivo: Determinar la prevalencia del síndrome confusional agudo y los factores de riesgo para su aparición en pacientes ancianos admitidos en el servicio de emergencia de un hospital nacional. Material y métodos: Se estudiaron todos los pacientes mayores de 60 años admitidos por el servicio de emergencia del Hospital Nacional Hipólito Unanue de Lima (Perú, durante el periodo: enero - abril del 2000. Para el diagnóstico del síndrome confusional empleamos el Confusion Assessment Method. Fueron evaluadas diferentes variables clínicas y demográficas, función cognitiva con el test de Pfeiffer, nivel funcional con la escala de Katz, síntomas depresivos y estado nutricional. Se compararon los grupos de pacientes con y sin síndrome confusional utilizando un análisis multivariado de regresión logística. Resultados: De 110 pacientes hospitalizados, 47 (42.7% presentaron síndrome confusional agudo al momento del ingreso. Los factores de riesgo para síndrome confusional agudo fueron: deterioro cognitivo crónico (OR = 5.61; IC 95%, 1.65 - 19.03, p < 0.0001, dependencia funcional total (OR = 6.18; IC 95%, 1.25 - 30.59, p < 0.001 y deshidratación moderada a severa al ingreso (OR = 4.22; IC 95%, 1.12 - 9.75, p < 0.05. Conclusiones: El síndrome confusional agudo es una condición frecuente en el anciano hospitalizado por emergencias. En nuestro estudio, los factores de riesgo para su aparición fueron: deterioro cognitivo crónico, pobre nivel funcional y deshidratación moderada a severa. (Rev Med Hered 2002; 13: 10-18.

  8. Diagnóstico automático del síndrome coronario agudo utilizando un sistema multiagente basado en redes neuronales

    Directory of Open Access Journals (Sweden)

    John Jaime Sprockel Díaz

    2017-05-01

    Conclusiones: Es posible desarrollar una herramienta para el diagnóstico automático del síndrome coronario agudo a partir de un sistema multiagente que ensamble la disposición tomada por un conjunto de redes neuronales artificiales, cuyo rendimiento permite su consideración para su implementación dentro de un sistema de soporte a las decisiones clínicas.

  9. Inhomogeneous Broadening in Perturbed Angular Correlation Spectroscopy

    Science.gov (United States)

    Bunker, Austin; Adams, Mike; Hodges, Jeffery; Park, Tyler; Stufflebeam, Michael; Evenson, William; Matheson, Phil; Zacate, Matthew

    2009-10-01

    Our research concerns the effect of a static distribution of defects on the net electric field gradient (EFG) within crystal structures. Defects and vacancies perturb the distribution of gamma rays emitted from radioactive probe nuclei within the crystal. These defects and vacancies produce a net EFG at the site of the probe which causes the magnetic quadrupole moment of the nucleus of the probe to precess about the EFG. The net EFG, which is strongly dependent upon the defect concentration, perturbs the angular correlation (PAC) of the gamma rays, and is seen in the damping of the perturbation function, G2(t), in time and broadening of the spectral peaks in the Fourier transform. We have used computer simulations to study the probability distribution of EFG tensor components in order to uncover the concentration dependence of G2(t). This in turn can be used to analyze experimental PAC data and quantitatively describe properties of the crystal.

  10. Topological photonic orbital-angular-momentum switch

    Science.gov (United States)

    Luo, Xi-Wang; Zhang, Chuanwei; Guo, Guang-Can; Zhou, Zheng-Wei

    2018-04-01

    The large number of available orbital-angular-momentum (OAM) states of photons provides a unique resource for many important applications in quantum information and optical communications. However, conventional OAM switching devices usually rely on precise parameter control and are limited by slow switching rate and low efficiency. Here we propose a robust, fast, and efficient photonic OAM switch device based on a topological process, where photons are adiabatically pumped to a target OAM state on demand. Such topological OAM pumping can be realized through manipulating photons in a few degenerate main cavities and involves only a limited number of optical elements. A large change of OAM at ˜10q can be realized with only q degenerate main cavities and at most 5 q pumping cycles. The topological photonic OAM switch may become a powerful device for broad applications in many different fields and motivate a topological design of conventional optical devices.

  11. Coherent control of photoelectron wavepacket angular interferograms

    International Nuclear Information System (INIS)

    Hockett, P; Wollenhaupt, M; Baumert, T

    2015-01-01

    Coherent control over photoelectron wavepackets, via the use of polarization-shaped laser pulses, can be understood as a time and polarization-multiplexed process, where the final (time-integrated) observable coherently samples all instantaneous states of the light–matter interaction. In this work, we investigate this multiplexing via computation of the observable photoelectron angular interferograms resulting from multi-photon atomic ionization with polarization-shaped laser pulses. We consider the polarization sensitivity of both the instantaneous and cumulative continuum wavefunction; the nature of the coherent control over the resultant photoelectron interferogram is thus explored in detail. Based on this understanding, the use of coherent control with polarization-shaped pulses as a methodology for a highly multiplexed coherent quantum metrology is also investigated, and defined in terms of the information content of the observable. (paper)

  12. Coherent control of photoelectron wavepacket angular interferograms

    Science.gov (United States)

    Hockett, P.; Wollenhaupt, M.; Baumert, T.

    2015-11-01

    Coherent control over photoelectron wavepackets, via the use of polarization-shaped laser pulses, can be understood as a time and polarization-multiplexed process, where the final (time-integrated) observable coherently samples all instantaneous states of the light-matter interaction. In this work, we investigate this multiplexing via computation of the observable photoelectron angular interferograms resulting from multi-photon atomic ionization with polarization-shaped laser pulses. We consider the polarization sensitivity of both the instantaneous and cumulative continuum wavefunction; the nature of the coherent control over the resultant photoelectron interferogram is thus explored in detail. Based on this understanding, the use of coherent control with polarization-shaped pulses as a methodology for a highly multiplexed coherent quantum metrology is also investigated, and defined in terms of the information content of the observable.

  13. Angular filter refractometry analysis using simulated annealing.

    Science.gov (United States)

    Angland, P; Haberberger, D; Ivancic, S T; Froula, D H

    2017-10-01

    Angular filter refractometry (AFR) is a novel technique used to characterize the density profiles of laser-produced, long-scale-length plasmas [Haberberger et al., Phys. Plasmas 21, 056304 (2014)]. A new method of analysis for AFR images was developed using an annealing algorithm to iteratively converge upon a solution. A synthetic AFR image is constructed by a user-defined density profile described by eight parameters, and the algorithm systematically alters the parameters until the comparison is optimized. The optimization and statistical uncertainty calculation is based on the minimization of the χ 2 test statistic. The algorithm was successfully applied to experimental data of plasma expanding from a flat, laser-irradiated target, resulting in an average uncertainty in the density profile of 5%-20% in the region of interest.

  14. Nuclear scissors modes and hidden angular momenta

    Energy Technology Data Exchange (ETDEWEB)

    Balbutsev, E. B., E-mail: balbuts@theor.jinr.ru; Molodtsova, I. V. [Joint Institute for Nuclear Research (Russian Federation); Schuck, P. [Université Paris-Sud, Institut de Physique Nucléaire, IN2P3–CNRS (France)

    2017-01-15

    The coupled dynamics of low-lying modes and various giant resonances are studied with the help of the Wigner Function Moments method generalized to take into account spin degrees of freedom and pair correlations simultaneously. The method is based on Time-Dependent Hartree–Fock–Bogoliubov equations. The model of the harmonic oscillator including spin–orbit potential plus quadrupole–quadrupole and spin–spin interactions is considered. New low-lying spin-dependent modes are analyzed. Special attention is paid to the scissors modes. A new source of nuclear magnetism, connected with counter-rotation of spins up and down around the symmetry axis (hidden angular momenta), is discovered. Its inclusion into the theory allows one to improve substantially the agreement with experimental data in the description of energies and transition probabilities of scissors modes.

  15. Angular reduction in multiparticle matrix elements

    International Nuclear Information System (INIS)

    Lehman, D.R.; Parke, W.C.

    1989-01-01

    A general method for reduction of coupled spherical harmonic products is presented. When the total angular coupling is zero, the reduction leads to an explicitly real expression in the scalar products of the unit vector arguments of the spherical harmonics. For nonscalar couplings, the reduction gives Cartesian tensor forms for the spherical harmonic products; tensors built from the physical vectors in the original expression. The reduction for arbitrary couplings is given in closed form, making it amenable to symbolic manipulation on a computer. The final expressions do not depend on a special choice of coordinate axes, nor do they contain azimuthal quantum number summations, or do they have complex tensor terms for couplings to a scalar; consequently, they are easily interpretable from the properties of the physical vectors they contain

  16. Chiral symmetries associated with angular momentum

    International Nuclear Information System (INIS)

    Bhattacharya, M; Kleinert, M

    2014-01-01

    In quantum mechanics courses, symmetries of a physical system are usually introduced as operators which commute with the Hamiltonian. In this paper we will consider chiral symmetries which anticommute with the Hamiltonian. Typically, introductory courses at the (under)graduate level do not discuss these simple, useful and beautiful symmetries at all. The first time a student encounters them is when the Dirac equation is discussed in a course on relativistic quantum mechanics, or when particle–hole symmetry is studied in the context of superconductivity. In this paper, we will show how chiral symmetries can be simply elucidated using the theory of angular momentum, which is taught in virtually all introductory quantum mechanics courses. (paper)

  17. Cierre angular primario: opciones quirúrgicas

    Directory of Open Access Journals (Sweden)

    Henry Pérez-González

    2014-10-01

    Full Text Available Se realizó una revisión bibliográfica con el objetivo de exponer las principales opciones quirúrgicas en el tratamiento del cierre angular primario efectuando una búsqueda de los principales artículos científicos de los últimos años, así como de la literatura impresa que incluye el tema, siendo seleccionados los contenidos más relevantes para la confección del informe final. Las opciones de tratamiento incluyen la cirugía láser (iridotomía, iridoplastia y la cirugía incisional (filtrante, extracción del cristalino, dependiendo de los factores fisiopatológicos involucrados y la forma clínica en el momento del diagnóstico.

  18. Untangling Galaxy Components - The Angular Momentum Parameter

    Science.gov (United States)

    Tabor, Martha; Merrifield, Michael; Aragon-Salamanca, Alfonso

    2017-06-01

    We have developed a new technique to decompose Integral Field spectral data cubes into separate bulge and disk components, allowing us to study the kinematic and stellar population properties of the individual components and how they vary with position. We present here the application of this method to a sample of fast rotator early type galaxies from the MaNGA integral field survey, and demonstrate how it can be used to explore key properties of the individual components. By extracting ages, metallicities and the angular momentum parameter lambda of the bulges and disks, we show how this method can give us new insights into the underlying structure of the galaxies and discuss what this can tell us about their evolution history.

  19. Angular biasing in implicit Monte-Carlo

    International Nuclear Information System (INIS)

    Zimmerman, G.B.

    1994-01-01

    Calculations of indirect drive Inertial Confinement Fusion target experiments require an integrated approach in which laser irradiation and radiation transport in the hohlraum are solved simultaneously with the symmetry, implosion and burn of the fuel capsule. The Implicit Monte Carlo method has proved to be a valuable tool for the two dimensional radiation transport within the hohlraum, but the impact of statistical noise on the symmetric implosion of the small fuel capsule is difficult to overcome. We present an angular biasing technique in which an increased number of low weight photons are directed at the imploding capsule. For typical parameters this reduces the required computer time for an integrated calculation by a factor of 10. An additional factor of 5 can also be achieved by directing even smaller weight photons at the polar regions of the capsule where small mass zones are most sensitive to statistical noise

  20. Angular Position Tracking Control of a Quadcopter

    Directory of Open Access Journals (Sweden)

    T. V. Glazkov

    2017-01-01

    Full Text Available The paper dwells on tracking the quad-copter angular position with desired quality parameters of transient processes. The aerial vehicle is considered as a rigid body with six degrees of freedom.  A full rigid body quad-copter mathematical model is considered without the assumption of smallness of the Euler angles.Among the most well known methods of non-linear stabilization are feedback linearization and backstepping. The backstepping approach allows us to have an effective solution of the stabilization problems with uncertainties available in the system. However, in synthesis of the feedback through backstepping, there is still an urgent issue: how to ensure desirable quality of transients in the closed-loop system. The paper presents a solution of this problem using as an example the tracking a given (programmed change of the angular position of a quad-copter.The control algorithms obtained in this paper are implemented using the Rolling Spider MATLAB Toolbox (ROSMAT tool package on the Parrot Rolling Spider quad-copter. A numerical simulation and experiments have shown the efficiency of obtained control laws, with the transient processes taking into account the desired quality indicators. However, the experiments showed that lack of terms in the mathematical model to describe the aerodynamic effects, resulted in the instability of the quad-copter flight near the obstacle (the effect of the reflected airflow.Further research can be aimed at solving the control problem in question using a mathematical model of the quad-copter motion that takes into account various aerodynamic effects.One of the potential application areas for the theoretical results, obtained in the paper, is to solve the problems of automatic control of unmanned aerial vehicles.

  1. Comportamiento del infarto agudo de miocardio en adultos mayores atendidos en el Policlínico XX Aniversario

    Directory of Open Access Journals (Sweden)

    Rolando Santos Martínez

    2016-03-01

    Full Text Available Introducción: La cardiopatía isquémica constituye, en la actualidad, uno de los problemas de salud más serios a nivel mundial; es considerada estadísticamente la primera causa de muerte en el mundo desarrollado. Objetivo: Caracterizar el comportamiento del infarto agudo de miocardio en adultos mayores. Método: Se realizó una investigación descriptiva retrospectiva con los 62 adultos mayores pertenecientes al área de salud del Policlínico XX Aniversario de la ciudad de Santa Clara, Cuba, que fueron egresados del hospital con el diagnóstico de infarto agudo de miocardio. Las variables fundamentales fueron los factores de riesgo, la localización del infarto y sus complicaciones. Resultados: Predominaron los hombres (62,9 % y el grupo de edad entre 60 y 69 años (59,7 %. Hubo mayor representación de los pacientes del Consultorio de Condado Sur (41,9 %. La hipertensión arterial fue el factor de riesgo cardiovascular más frecuentemente encontrado (53,2 %, con diferencia significativa (p<0,05, seguido por el alcoholismo (35,5 % y la obesidad (29,0 %. El infarto inferior fue el más prevalente, encontrado en 24 pacientes (38,7 %; seguido por el ántero-septal (22,6 % y el ántero-lateral (21,0 %. El fallo de bomba fue diagnosticado en 24 pacientes (38,7 %, lo que representa una diferencia estadística muy significativa (p=0,01, y le siguieron en orden de frecuencia las complicaciones eléctricas. Conclusión: Existió un predominio del sexo masculino y del grupo de edad entre 60-69 años. La hipertensión arterial, como factor de riesgo, la topografía inferior del infarto y al fallo de bomba, como complicación, fueron los más frecuentemente encontrados.

  2. Troponina T vs Troponina I como Valor Predictivo para Síndrome Coronario Agudo en menores de 80 Años

    Directory of Open Access Journals (Sweden)

    PE Pla Cala

    2015-07-01

    Full Text Available Resumen – Actualmente en la injuria miocárdica, ha tenido gran relevancia clínica la utilidad de las troponinas como método diagnóstico, repercutiendo en el manejo del síndrome coronario agudo. Objetivo: Analizar la importancia de los biomarcadores troponina T e I y otros elementos adyuvantes que cumplen un papel trascendental como es el electrocardiograma y los diferentes métodos invasivos, el cual brinda una orientación para la concepción de un diagnóstico oportuno que permita tomar las acciones pertinentes en un paciente con síndrome coronario agudo. Materiales y Métodos: Estudio descriptivo comparativo en 35 pacientes, adultos mayores de 21 años y menores 80 años, que se encontraban hospitalizados en la Empresa Social del Estado Centro de Atención y Rehabilitación Integral - E.S.E CARI de Alta complejidad, en el periodo comprendido entre el año 2012 a 2014. Resultados: Los pacientes presentaron síndrome coronario agudo (infarto agudo de miocardio con o sin elevación del ST, con factores de riesgo cardiovascular tales como: sedentarismo, tabaquismo, hipertensión arterial, diabetes, valvulopatías, dislipidemia y antecedentes de cardiopatía isquémica. El punto a analizar fue la elevación de los biomarcadores troponina T y troponina I en un periodo menor y mayor a 3 horas, desde el inicio de los síntomas (dolor torácico, criodiaforesis, disnea hasta el ingreso a la institución hospitalaria. Se compararon los resultados obtenidos de cada uno de estos biomarcadores en el diagnóstico precoz y oportuno del síndrome coronario agudo. De las muestra analizada (n=35 pacientes se obtuvo que la troponina T< 3 horas se elevó un 76.4% en rangos de edad entre los 60-80 años en contraste con troponina I < 3 horas en ese mismo grupo etario que fue de 70.5%. Conclusiones: se evidenció que ambos biomarcadores son equiparables con una ligera ventaja de la troponina T con respecto a la I.

  3. Angular correlations between recoil velocity and angular momentum vectors in molecular photodissociation

    Science.gov (United States)

    Hall, G. E.; Sivakumar, N.; Chawla, D.; Houston, P. L.; Burak, I.

    1988-03-01

    A technique has been developed for determining the angular correlation between a photofragment's angular momentum vector J, its recoil velocity vector v, and the transition dipole moment of the parent molecule μp . Doppler profile spectroscopy used in conjunction with laser-induced fluorescence probing by polarized light can be used to determine the correlations. The pairwise correlations between these vectors as well as their triple correlation are discussed for limiting cases using a classical approach as well as for the general case using a quantum approach based on density matrices. The current formulations differ in two ways from the recent approach of Dixon, who used a bipolar expansion of the correlated velocity and angular momentum distributions. The physical basis for the influence of the vector correlations on the Doppler profile is somewhat more transparent in the current formulations, and the direct connection between the measured correlations and the t-matrix elements occurring in the theory of Balint-Kurti and Shapiro for the photodissociation of a triatomic molecule is also demonstrated.

  4. Terapia com células-tronco na síndrome do desconforto respiratório agudo Stem cell therapy in acute respiratory distress syndrome

    Directory of Open Access Journals (Sweden)

    Tatiana Maron-Gutierrez

    2009-03-01

    Full Text Available A síndrome do desconforto respiratório agudo é caracterizada por uma reação inflamatória difusa do parênquima pulmonar, podendo ser induzida por um insulto direto ao epitélio alveolar (síndrome do desconforto respiratório agudo pulmonar ou indireto através do endotélio vascular (síndrome do desconforto respiratório agudo extrapulmonar. Acredita-se que uma terapia eficaz para o tratamento da síndrome do desconforto respiratório agudo deva atenuar a resposta inflamatória e promover adequado reparo da lesão pulmonar. O presente artigo apresenta uma breve revisão acerca do potencial terapêutico das células-tronco na síndrome do desconforto respiratório agudo. Essa revisão bibliográfica baseou-se em uma pesquisa sistemática de artigos experimentais e clínicos sobre terapia celular na síndrome do desconforto respiratório agudo incluídos nas bases de dados MedLine e SciELO nos últimos 10 anos. O transplante de células-tronco promove melhora da lesão inflamatória pulmonar e do conseqüente processo fibrótico, induzindo adequado reparo tecidual. Dentre os mecanismos envolvidos, podemos citar: diferenciação em células do epitélio alveolar e redução na liberação de mediadores inflamatórios e sistêmicos e fatores de crescimento. A terapia com células-tronco derivadas da medula óssea pode vir a ser uma opção eficaz e segura no tratamento da síndrome do desconforto respiratório agudo por acelerar o processo de reparo e atenuar a resposta inflamatória. Entretanto, os mecanismos relacionados à atividade antiinflamatória e antifibrogênica de tais células necessitam ser mais bem elucidados, limitando, assim, o seu uso clínico imediato.Acute respiratory distress syndrome is characterized by an acute pulmonary inflammatory process induced by the presence of a direct (pulmonary insult that affects lung parenchyma, or an indirect (extrapulmonary insult that results from an acute systemic inflammatory response

  5. Analgesia pós-operatória para procedimentos cirúrgicos ortopédicos de quadril e fêmur: comparação entre bloqueio do compartimento do psoas e bloqueio perivascular inguinal Analgesia postoperatoria para procedimientos quirúrgicos ortopédicos de cadera y fémur: comparación entre bloqueo del compartimiento del psoas y bloqueo perivascular inguinal Postoperative analgesia for orthopedic surgeries of the hip and femur: a comparison between psoas compartment and inguinal paravascular blocks

    Directory of Open Access Journals (Sweden)

    Luiz Eduardo Imbelloni

    2006-12-01

    dos cinco nervos do plexo lombar.JUSTIFICATIVA Y OBJETIVOS: Este estudio evaluó la eficacia de la inyección única de bupivacaína a 0,25% en el compartimiento del psoas o perivascular inguinal a través del estimulador de nervios periféricos para analgesia postoperatoria en pacientes sometidos a intervenciones quirúrgicas ortopédicas. MÉTODO: Cien pacientes recibieron bloqueo del plexo lumbar a través del compartimiento del psoas y fueron comparados con 100 pacientes que recibieron bloqueo del plexo lumbar vía perivascular inguinal, identificados por el estimulador de nervios periféricos con la inyección de 40 mL bupivacaína a 0,25% sin epinefrina. La analgesia en los nervios ilioinguinal, genitofemoral, cutáneo femoral lateral, femoral y obturatorio fue evaluada a las 4, 8, 12, 16, 20 y 24 horas después del final de la intervención quirúrgica. La intensidad del dolor también fue medida en el mismo período. La cantidad de opioides administrada en el postoperatorio fue anotada. En cinco pacientes de cada grupo, un estudio radiográfico con contraste no iónico se realizó para medir la dispersión de la solución anestésica. RESULTADOS: Los nervios ilioinguinal, genitofemoral, cutáneo femoral lateral, femoral y obturatorio fueron bloqueados en 92% de los pacientes en el compartimiento del psoas versus 62% en el bloqueo perivascular inguinal. El bloqueo del plexo lumbar redujo la necesidad de opioides y 42% de los pacientes sometidos al bloqueo del compartimiento del psoas y 36% de los pacientes en el bloqueo inguinal no necesitaron analgésico adicional en el postoperatorio. La duración de la analgesia fue de aproximadamente 21 horas con el bloqueo del compartimiento del psoas y 15 horas en el bloqueo perivascular inguinal. CONCLUSIONES: El bloqueo del compartimiento del psoas y perivascular inguinal es una excelente técnica para la analgesia postoperatoria en intervenciones quirúrgicas ortopédicas reduciendo la necesidad de opioides. Ese

  6. Inheritance of resistance to angular leaf spot in yellow beans ...

    African Journals Online (AJOL)

    Angular leaf spot (Phaeoisariopsis griseola (Sacc) is an important disease of common bean (Phaseolus vulgaris L.) in most parts of Africa, causing yield losses of 40-80%. This study was carried out to determine the inheritance of resistance to angular leaf spot in yellow beans. Biparental crosses were done between ...

  7. Prospects of Measuring the Angular Power Spectrum of the Diffuse ...

    Indian Academy of Sciences (India)

    Review. J. Astrophys. Astr. (2016) 37: 35. DOI: 10.1007/s12036-016-9413-x. Prospects of Measuring the Angular Power Spectrum of the Diffuse. Galactic .... In this section we briefly review the Tapered Gridded Estimator (TGE), the details ... of the product of the primary beam pattern A(θ) and δI(θ) the angular fluctuation.

  8. Measuring Average Angular Velocity with a Smartphone Magnetic Field Sensor

    Science.gov (United States)

    Pili, Unofre; Violanda, Renante

    2018-01-01

    The angular velocity of a spinning object is, by standard, measured using a device called a tachometer. However, by directly using it in a classroom setting, the activity is likely to appear as less instructive and less engaging. Indeed, some alternative classroom-suitable methods for measuring angular velocity have been presented. In this paper,…

  9. A kinematic model for calculating the magnitude of angular ...

    African Journals Online (AJOL)

    Keplerian velocity laws imply the existence of velocity shear and shear viscosity within an accretion disk. Due to this viscosity, angular momentum is transferred from the faster moving inner regions to the slower-moving outer regions of the disk. Here we have formulated a model for calculating the magnitude of angular ...

  10. Learning web development with Bootstrap and AngularJS

    CERN Document Server

    Radford, Stephen

    2015-01-01

    Whether you know a little about Bootstrap or AngularJS, or you're a complete beginner, this book will enhance your capabilities in both frameworks and you'll build a fully functional web app. A working knowledge of HTML, CSS, and JavaScript is required to fully get to grips with Bootstrap and AngularJS.

  11. 3D printed bio-inspired angular acceleration sensor

    NARCIS (Netherlands)

    van Tiem, Joël; Groenesteijn, Jarno; Sanders, Remco G.P.; Krijnen, Gijsbertus J.M.

    2015-01-01

    Abstract—We present a biomimetic angular acceleration sensor inspired by the vestibular system, as found e.g. in mammals and fish. The sensor consist of a fluid filled circular channel. When exposed to angular accelerations the fluid flows relative to the channel. Read-out is based on

  12. inheritance of resistance to angular leaf spot in yellow beans ...

    African Journals Online (AJOL)

    Prof. Adipala Ekwamu

    Susceptible. II -indeterminate erect; III -indeterminate semi-prostate; ALS = Angular leaf spot. Isolation of Phaeoisariopsis griseola and plant inoculation. Isolation of angular leaf spot was made from lesions of naturally infected bean leaves showing fungal sporulation. In the case of non-sporulating lesions, the fungus was.

  13. Angular sensitivity of blowfly photoreceptors : broadening by artificial electrical coupling

    NARCIS (Netherlands)

    Smakman, J.G.J.; Stavenga, D.G.

    1987-01-01

    1. Electrical coupling between R1-6 photoreceptors was investigated by measuring angular sensitivities and quantum bumps. 2. Recordings were made from two extreme types of cells: Type a: cells with a diffraction-like angular sensitivity profile. Only large bumps could be obtained from these cells.

  14. Epidemiology Of Angular Deformities Of The Knee In Children In ...

    African Journals Online (AJOL)

    Background: Bony problems such as angular deformities and metabolic bone disease are of high frequency in Nigeria. Objective: The aim of this study was to define the pattern of presentation in children with angular deformities of the knee. Methodology: It was an 18-month prospective study involving children aged ...

  15. Fundamental methods to measure the orbital angular momentum of light

    NARCIS (Netherlands)

    Berkhout, Gregorius Cornelis Gerardus (Joris)

    2011-01-01

    Light is a ubiquitous carrier of information. This information can be encoded in the intensity, direction, frequency and polarisation of the light and, which was described more recently, in its orbital angular momentum. Although creating light beams with orbital angular momentum is relatively easy,

  16. Efeito agudo do método de facilitação neuromuscular proprioceptiva na flexibilidade de bailarinas

    Directory of Open Access Journals (Sweden)

    Giane Andreia Souza Siqueira

    2013-11-01

    Full Text Available Objetivo: Verificar a resposta aguda do método de Facilitação Neuromuscular Proprioceptiva (FNP na flexibilidade e a influência das variáveis idade, peso, estatura em praticantes de Ballet Clássico. Método: A amostra foi composta por 11 bailarinas, com média de idade de 10,91 ± 0,79 anos praticantes regularmente de Ballet clássico duas vezes por semana com no mínimo de 5 anos de experiência. Foi utilizado o método de FNP nas bailarinas. Para avaliação da flexibilidade foi utilizado o Banco de Wells. Para analise estatística utilizou o teste de “t” de Student para amostras dependentes e análise de regressão Stepwise Forward com p≤0,05. Resultado:A diferença média de amplitude de movimento foi 4,81 ± 1,99 cm. Já a variável estatura demonstrou-se influenciar significativamente na flexibilidade. O método FNP demonstrou efeito agudo significativo na flexão de quadril em bailarinas.

  17. Infarto agudo del miocardio con elevación del ST Acute myocardial infarction with ST elevation

    Directory of Open Access Journals (Sweden)

    Carlos García del Río

    2005-04-01

    Full Text Available El tratamiento del infarto agudo del miocardio ha evolucionado de una actitud pasiva a otra cada vez más agresiva en las últimas dos décadas. Desde que se publicaron los primeros artículos que mostraron los beneficios de la reperfusión miocárdica temprana, existe una preocupación constante por encontrar mejores fármacos y técnicas que permitan abrir la arteria culpable con el mayor porcentaje de éxito, de una manera cada vez más veloz. El advenimiento de la angioplastia primaria, permitió tener una alternativa mecánica que podía no sólo abrir el vaso culpable, sino evaluar rápidamente el flujo post-apertura y además precisar la anatomía coronaria en su totalidad. Sin embargo, inmediatamente aparecieron cuestionamientos con respecto a su dependencia de recursos tecnológicos complejos y la operabilidad por parte de intervencionistas expertos. Recientemente, un meta-análisis que evaluó 23 estudios aleatorizados, reportó una superioridad de la angioplastia primaria sobre la trombólisis, en los puntos de muerte, reinfarto y accidente cerebro-vascular. Pese a ello, todavía seguía sin resolverse el problema de su aplicabilidad a gran escala. Para tratar de demostrar que podía recomendarse una estrategia intervencionista en todos los pacientes con infarto agudo del miocardio con elevación del ST, se realizaron ensayos que compararon la trombólisis in situ vs. el traslado a hospitales con la posibilidad de realizar angioplastia primaria. Estos estudios lograron demostrar superioridad de la angioplastia primaria solamente en el punto de reinfarto, además un ensayo contra trombólisis pre-hospitalaria demostró ventaja de esta última. En conclusión, a pesar de las frías cifras, no parece claro que pueda generalizarse una estrategia de angioplastia primaria para cada paciente con infarto agudo del miocardio con elevación del ST. Puede ser más inteligente crear algoritmos con base en la disponibilidad de laboratorios de

  18. Proposta de propriedades e paisagens planejadas no desenvolvimento do turismo no município de Agudo/RS

    Directory of Open Access Journals (Sweden)

    Gerson Jonas Schirmer

    2015-07-01

    Full Text Available O objetivo geral deste estudo consistiu em discutir a importância do planejamento das propriedades e paisagens rurais do município de Agudo, visando a potencialidade do desenvolvimento turístico no município diante da estruturação do seu atual modelo produtivo. Este trabalho foi realizado a partir de uma pesquisa descritiva-exploratória com abordagem qualitativa. Traz-se primeiramente uma caracterização dos aspectos ambientais e socioeconômicos do município, em especial da agricultura e do potencial turístico local. Percebe-se que há uma necessidade de buscar alternativas para dinamizar o meio rural do município, com qualidade de vida. Pode-se ter uma ideia geral da atual situação atual do turismo no município e das possibilidades futuras. Nesse sentido, a diversificação da produção, torna a propriedade ecologicamente e economicamente sustentável, trazendo qualidade de vida ao agricultor e influenciando diretamente no desenvolvimento do turismo local.

  19. Infarto agudo do miocárdio e morte súbita documentada Acute myocardial infarction and documented sudden death

    Directory of Open Access Journals (Sweden)

    Gustavo Carvalho

    2005-01-01

    Full Text Available Homem, sexagenário, deu entrada na emergência com dor torácica duvidosa e lipotímia. Investigado e estratificado, teve eletrocardiogramas e marcadores séricos de injúria miocárdica seriados negativos para isquemia miocárdica, e teste ergométrico sem critérios para isquemia miocárdica. Contudo, apresentou morte súbita presenciada dentro do hospital enquanto fazia uso da monitorização eletrocardiográfica contínua com o holter, que evidenciou, em seus traçados, infarto agudo do miocárdico complicado com arritmia ventricular complexa (taquicardia e fibrilação ventricular, que culminou em morte refratária às manobras de reanimação cardio-respiratória.A sexagenarian man sought the emergency unit complaining of dubious chest pain and lipothymia. He was investigated and stratified. His serial electrocardiograms and serum markers for myocardial injury were negative for myocardial ischemia, as was his exercise test. However, the patient died suddenly inside the hospital while under continuous electrocardiographic Holter monitoring, which evidenced acute myocardial infarction complicated by complex ventricular arrhythmia (ventricular tachycardia and fibrillation, which culminated in death refractory to the cardiopulmonary resuscitation maneuvers.

  20. Vivendo o acidente vascular encefálico agudo: significados da doença para pessoas hospitalizadas

    Directory of Open Access Journals (Sweden)

    Samia Jardelle Costa de Freitas Maniva

    2013-04-01

    Full Text Available Objetivou-se compreender o significado da experiência vivenciada pela pessoa adoecida por acidente vascular encefálico agudo. Trata-se de estudo qualitativo, fundamentado nos pressupostos teóricos do interacionismo simbólico, realizado em uma unidade especializada no tratamento de acidente vascular encefálico de um hospital terciário, situado na cidade de Fortaleza, CE. Participaram do estudo 10 pacientes. A coleta de dados ocorreu por meio de entrevista aberta e os dados foram organizados e analisados segundo a técnica de enunciação. Cumpriram-se todos os aspectos éticos. O significado da experiência de adoecimento foi construído com base na percepção dos sentimentos surgidos durante a hospitalização, caracterizados por medo da morte e das sequelas da doença; tristeza pelo distanciamento do lar; alívio, ao evidenciar-se melhora do quadro clínico, e desejo de mudança dos hábitos de vida. Apreendeu-se que a experiência de adoecimento por acidente vascular encefálico é complexa, e nela os significados são elaborados com base em sentimentos, ações e comportamentos dos sujeitos.

  1. Vivendo o acidente vascular encefálico agudo: significados da doença para pessoas hospitalizadas

    Directory of Open Access Journals (Sweden)

    Samia Jardelle Costa de Freitas Maniva

    Full Text Available Objetivou-se compreender o significado da experiência vivenciada pela pessoa adoecida por acidente vascular encefálico agudo. Trata-se de estudo qualitativo, fundamentado nos pressupostos teóricos do interacionismo simbólico, realizado em uma unidade especializada no tratamento de acidente vascular encefálico de um hospital terciário, situado na cidade de Fortaleza, CE. Participaram do estudo 10 pacientes. A coleta de dados ocorreu por meio de entrevista aberta e os dados foram organizados e analisados segundo a técnica de enunciação. Cumpriram-se todos os aspectos éticos. O significado da experiência de adoecimento foi construído com base na percepção dos sentimentos surgidos durante a hospitalização, caracterizados por medo da morte e das sequelas da doença; tristeza pelo distanciamento do lar; alívio, ao evidenciar-se melhora do quadro clínico, e desejo de mudança dos hábitos de vida. Apreendeu-se que a experiência de adoecimento por acidente vascular encefálico é complexa, e nela os significados são elaborados com base em sentimentos, ações e comportamentos dos sujeitos.

  2. Ectasia coronaria y lesiones trombóticas como causa de síndrome coronario agudo

    Directory of Open Access Journals (Sweden)

    Paula Awamleh

    2017-03-01

    Full Text Available Se presenta un caso de manejo complicado y decisiones difíciles. Un paciente con antecedente de disección aórtica tipo A y dilatación residual de la aorta descendente de hasta 60 mm es ingresado por un síndrome coronario agudo sin elevación del ST. La coronariografía pone de manifiesto una marcada ectasia coronaria y unos defectos de perfusión de dudoso origen. ¿Trombos o falsas imágenes por flujo muy lentificado? Asumiendo que pudiera tratarse de trombos, el paciente es tratado con anticoagulación repitiéndose la coronariografía al cabo de dos meses. En este segundo estudio se observa la completa desaparición de las imágenes, confirmándose el origen trombótico de las mismas. En este momento se plantea ¿cuál debe ser el tratamiento crónico del paciente? No hay evidencia científica disponible acerca del tratamiento de la ectasia coronaria y se trata de un paciente de alto riesgo por su antecedente de disección aórtica. Finalmente se decide, de forma empírica, mantener la anticoagulación de forma indefinida. Tras dos años y seis meses de seguimiento no ha habido incidencias clínicas.

  3. Glaucoma agudo bilateral por uso de topiramato: relato de caso Topiramate-induced bilateral acute glaucoma: case report

    Directory of Open Access Journals (Sweden)

    Mardônio Parente de Menezes

    2009-01-01

    Full Text Available O topiramato, uma sulfa monossacarídica, usada primariamente como um anticonvulsivante, é uma droga relativamente nova no mercado brasileiro. Devido às potencialidades terapêuticas do topiramato em uma gama variada de patologias (enxaquecas, transtornos do humor, etc., assim como pelas diversas novas apresentações comerciais surgidas no país ultimamente, espera-se que seu uso venha a ser cada dia mais comum. O presente relato se refere a um grave efeito colateral decorrente do uso da medicação em questão, ocorrido em um homem de 36 anos - o glaucoma agudo bilateral, evento ainda pouco relatado na literatura mundial. Por conta de tal quadro, o paciente teve de se submeter a uma iridotomia bilateral.The topiramate, a monosaccharide sulfa, primarily used as an anticonvulsant, was recently introduced in Brazilian trade. Through therapeutic potentialities of topiramate in a considerable scale of illness (migraine, disorders of humor, etc., thus by the recent presentation, in Brazil, of several news commercial presentation of medication, it is expected that its use be more common each day. This present study reports a severe side effect that comes from the use of the drug in evidence, occurred in a 36 year-old man - the bilateral acute glaucoma, event of report not usual in the world literature. Because of this event, the patient had to be submitted to a bilateral iridotomy.

  4. Infarto agudo de miocardio. Guía de práctica clínica

    Directory of Open Access Journals (Sweden)

    Yanier Coll Muñoz

    2011-08-01

    Full Text Available

    La elaboración de esta Guía de Práctica Clínica se justifica, en primer lugar, por la elevada frecuencia de presentación y mortalidad del infarto agudo del miocardio en la población general. Las enfermedades cardiovasculares constituyen en la actualidad la principal causa de muerte en los países industrializados, y se espera que también lo sean en los países en vías de desarrollo en el año 2020.  La presente guía se refiere a los pacientes que presentan síntomas isquémicos o sus equivalentes, y una elevación persistente del segmento ST en el electrocardiograma, o cambios del electrocardiograma de infradesnivel del ST o de la onda T, compatibles con el diagnóstico de IAM sin elevación del ST. Esta Guía no aborda los elementos relacionados directamente con los procedimientos de intervencionismo coronario percutáneo ni la revascularización miocárdica quirúrgica.

  5. Optical communications beyond orbital angular momentum

    Science.gov (United States)

    Rosales-Guzmán, Carmelo; Trichili, Abderrahmen; Dudley, Angela; Ndagano, Bienvenu; Ben Salem, Amine; Zghal, Mourad; Forbes, Andrew

    2016-09-01

    Current optical communication technologies are predicted to face a bandwidth capacity limit in the near future. The nature of the limitation is fundamental rather than technological and is set by nonlinearities in optical fibers. One solution, suggested over 30 years ago, comprises the use of spatial modes of light as information carriers. Along this direction, light beams endowed with orbital angular momentum (OAM) have been demonstrated as potential information carriers in both, free space and fibres. However, recent studies suggest that purely OAM modes does not increase the bandwidth of optical communication systems. In fact, in all work to date, only the azimuthal component of transverse spatial modes has been used. Crucially, all transverse spatial modes require two degrees of freedom to be described; in the context of Laguerre-Gaussian (LGp`) beams these are azimuthal (l) and radial (p), the former responsible for OAM. Here, we demonstrate a technique where both degrees of freedom of LG modes are used as information carrier over free space. We transfer images encoded using 100 spatial modes in three wavelengths as our basis, and employ a spatial demultiplexing scheme that detects all 100 modes simultaneously. Our scheme is a hybrid of MIMO and SMM, and serves as a proof-of-principle demonstration. The cross-talk between the modes is small and independent of whether OAM modes are used or not.

  6. CLASS: The Cosmology Large Angular Scale Surveyor

    Science.gov (United States)

    Essinger-Hileman, Thomas; Ali, Aamir; Amiri, Mandana; Appel, John W.; Araujo, Derek; Bennett, Charles L.; Boone, Fletcher; Chan, Manwei; Cho, Hsiao-Mei; Chuss, David T.; hide

    2014-01-01

    The Cosmology Large Angular Scale Surveyor (CLASS) is an experiment to measure the signature of a gravitational wave background from inflation in the polarization of the cosmic microwave background (CMB). CLASS is a multi-frequency array of four telescopes operating from a high-altitude site in the Atacama Desert in Chile. CLASS will survey 70% of the sky in four frequency bands centered at 38, 93, 148, and 217 GHz, which are chosen to straddle the Galactic-foreground minimum while avoiding strong atmospheric emission lines. This broad frequency coverage ensures that CLASS can distinguish Galactic emission from the CMB. The sky fraction of the CLASS survey will allow the full shape of the primordial B-mode power spectrum to be characterized, including the signal from reionization at low-length. Its unique combination of large sky coverage, control of systematic errors, and high sensitivity will allow CLASS to measure or place upper limits on the tensor-to-scalar ratio at a level of r = 0:01 and make a cosmic-variance-limited measurement of the optical depth to the surface of last scattering, tau. (c) (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

  7. Angular distributions of sputtered particles from NiTi alloy

    International Nuclear Information System (INIS)

    Neshev, I.; Hamishkeev, V.; Chernysh, V.S.; Postnikov, S.; Mamaev, B.

    1993-01-01

    The angular distributions of sputtered Ni and Ti from a polycrystalline NiTi (50-50%) alloy are investigated by Auger electron spectroscopy and Rutherford backscattering spectroscopy. A difference in the angular distributions is observed with Ni being sputtered preferentially near the surface normal. A computer program for the calculation of the angular distributions of constituents sputtered from binary targets is created and used. The mechanisms responsible for the observed differences in the angular distributions are discussed. It is found that the collisional cascade theory is not directly applicable to the results of the constituents' angular distributions obtained in the presence of oxygen. The fitted coefficients of bombardment-induced segregation are found to be greater than the experimentally obtained ones. (author)

  8. La inmunización con productos de excreción-secreción de Trichinella spiralis unido al bloqueo de CTLA-4 produce un elevado grado de protección ante un reto con el parásito

    OpenAIRE

    José Lino Zumaquero-Ríos; Martín Pérez-Santos; Abel Villa-Mancera; Jorge Sarracent-Pérez

    2017-01-01

    En la búsqueda de una vacuna experimental efectiva contra Trichinella spiralis se han utilizado diferentes estrategias, pero el grado de protección alcanzado en la casi totalidad de los ensayos es insuficiente para lograr un adecuado control de la enfermedad. En la literatura hay evidencias de que moléculas inhibidoras de la activación de los linfocitos T están implicadas en la regulación de la respuesta inmune contra los helmintos. El bloqueo de estas moléculas puede ser un blanco potencial ...

  9. Analgesia postoperatoria en la queiloplastia del lactante. Estudio comparativo: bloqueo infraorbitario intraoral bilateral con bupivacaína 0,25% con adrenalina vs. analgesia intravenosa con tramadol Postoperative analgesia for the management of chieloplasty in the breast-fed baby. Comparative study: bilateral intraoral blockade of the infraorbitary nerve with bupivacaine 0.25% plus adrenaline versus intravenous analgesia with tramadol

    OpenAIRE

    J. A. Delgado; A. Martínez-Tellería; M. E. Cano; J. Galera; R. Fernández-Valades; A. Ruiz-Montes

    2005-01-01

    Objetivo: Comparar la eficacia y duración del bloqueo del nervio infraorbitario intraoral bilateral frente a la analgesia intravenosa convencional con tramadol en el control del dolor postoperatorio en lactantes sometidos a queiloplastia por labio leporino. Material y métodos: Tras la realización de una adecuada valoración preanestésica y la obtención del consentimiento informado de los padres, realizamos un estudio prospectivo, controlado aleatorizado y doble ciego en 25 niños, ASA I, con ed...

  10. Correlación automatizada de parámetros geométricos mediante contornos de bloqueo en engranajes cilíndricos con contacto exterior//Automatic correlation of geometric parameters by means of blocking contours in spur and helical external gear

    Directory of Open Access Journals (Sweden)

    Robert Hernández-Ortega

    2012-12-01

    Full Text Available Este trabajo tuvo como objetivo obtener un procedimiento, que al implementarse en un software para el diseño de transmisiones por engranajes cilíndricos con contacto exterior, correlacione automáticamente los parámetros geométricos mediante los contornos de bloqueo y así facilitar el trabajo del diseñador deengranajes. Para ello, se transformaron las expresiones matemáticas que definen las limitaciones geométricas para que puedan ser utilizadas en un programa que construya el contorno de bloqueo sin la intervención del diseñador. Se estableció además la secuencia en que estas deben ser calculadas. El procedimiento obtenido se implementó en un programa de computación obteniéndose una velocidad deejecución de 1 segundo aproximadamente. De esta forma se logró la correlación automática de los parámetros geométricos y un contorno de bloqueo que muestra el conjunto de valores de los coeficientes de corrección de las ruedas que pueden ser utilizados, construidos sin interacción con el diseñador.Palabras claves: contorno de bloqueo, engranajes, parámetros geométricos._______________________________________________________________________________AbstractThe aim of this work was to obtain a procedure, that when being implemented in the design software of spur and helical external gears, correlate the geometric parameters automatically by means of the blocking contours making easier the designer's work. The mathematical expressions that define the geometriclimitations were transformed so that they can be used in a program that it builds the blocking contour without the designer's intervention. Besides that it was settled down the sequence they should be calculated. The procedure was implemented in a calculation program obtaining an execution speed about 1 second. This way it was achieved the automatic correlation of the geometric parameters and a blockingcontour construction without the designer's intervention that it shows the

  11. Bloqueo aurículo-ventricular congénito completo: Reporte de un caso y revisión de la literatura Congenital complete atrioventricular block: eport of one case and literature review

    Directory of Open Access Journals (Sweden)

    Alejandro Díaz D

    2008-02-01

    Full Text Available El bloqueo aurículo-ventricular completo congénito, es una entidad poco común, que presenta alta morbilidad y mortalidad con incidencia real que permanece desconocida y requiere alto índice de sospecha para su diagnóstico y, por ende, su temprana intervención. Se observa en hijos de madres con enfermedades autoinmunes del tejido conectivo, en especial, lupus eritematoso sistémico cuando su aparición es congénita. A nivel postnatal, es más frecuente que ocurra por cardiopatías congénitas. También puede manifestarse en corazones normales desde el punto de vista estructural. El hallazgo clínico característico es bradicardia persistente que se manifiesta desde la vida intrauterina y repercute en la estabilidad circulatoria del feto llegando a producir hidrops, complicación seria y letal. Después del nacimiento aparece igualmente con bradicardia que puede o no descompensar la parte hemodinámica del paciente. El diagnóstico se hace por sospecha clínica, con ecocardiografía fetal y postnatal, electrocardiograma y detección de anticuerpos maternos tipo antiRo y antiLa. La implantación de un marcapasos es el tratamiento definitivo que contribuye a mejorar la sobrevida y el pronóstico de estos pacientes. Se presenta el caso de una paciente prematura, de 31 semanas, debido a hidrops no inmune, en quien se diagnosticó bloqueo aurículo-ventricular completo congénito secundario a lupus materno confirmado por anticuerpos anti-nucleares francamente positivos y anticuerpos antiRo y antiLa positivos, quien recibió manejo con soporte inotrópico y posterior implantación de marcapasos. Presentó mejoría completa de la falla cardiaca y se remitió hacia otra institución para manejo convencional del prematuro.Complete congenital atrioventricular block is a rare entity that has a high morbidity and mortality. Its real incidence remains unknown and a high suspicion index is needed for its diagnosis and consequently for its early

  12. Generación de inclusiones no metálicas y su efecto sobre el bloqueo de boquillas de colada continua en aceros ultra bajo carbono estabilizados con titanio

    Directory of Open Access Journals (Sweden)

    Vega-Becerra, O.

    2005-12-01

    Full Text Available This work presents a thermodynamic and experimental analysis of the phases that precipitate in the non metallic inclusions depending on the contents of aluminium (Al, titanium (Ti and oxygen (O in the steel, and their influence on the nozzle clogging. For the thermodynamic analysis, the program FACT WIN (Facility For The Analysis of Chemical Thermodynamics subroutine Equilib. was used. The experimental tests were carried out in an TAMMANN furnace, in an argon atmosphere. The control of the content of dissolved oxygen was carried out by means of sensors of solid electrolyte bases zirconia. The characterization of the inclusions was carried out with SEM, EDS and by means of the technique of fractional reduction with carbon. A good agreement was observed between the thermodynamic predictions and the experimental results.

    En este trabajo se presenta un análisis termodinámico y experimental de las fases que precipitan en inclusiones no metálicas en función de los contenidos de aluminio (Al, titanio (Ti y oxígeno (O en el acero y su influencia sobre el bloqueo de boquillas de colada continua. Para el análisis termodinámico se utilizó el programa FACT-WIN (Facility For The Analysis of Chemical Thermodynamics subrutina Equilib. Las pruebas experimentales se realizaron en un horno TAMMANN, en atmósfera de argón. El control del contenido de oxígeno disuelto se llevó a cabo mediante sensores de electrólito sólido base zirconia. La caracterización de las inclusiones se realizó por SEM, EDS y mediante la técnica de reducción fraccionada con carbono. Se observó una buena concordancia entre las predicciones termodinámicas y los resultados experimentales.

  13. Spin Rate of a Racquetball Due To Angular Impact

    Directory of Open Access Journals (Sweden)

    Dolev Illouz

    2014-12-01

    Full Text Available The relationship between the impact angle of a racquetball and the resulting angular velocity of the ball was investigated. Impact angles ranging from 0° to 80° were tested. The ball was dropped at constant speed on a plywood board that could be angled and the impact was filmed at 600 fps. The video was then analyzed to determine the angular velocity of the ball after the bounce. It was found that there is a proportional relationship between the incoming impact angle (θ and angular velocity (ω of the racquetball, for angles up to 50°, indicating that the ball did not slip during impact at these angles.

  14. Control of Angular Intervals for Angle-Multiplexed Holographic Memory

    Science.gov (United States)

    Kinoshita, Nobuhiro; Muroi, Tetsuhiko; Ishii, Norihiko; Kamijo, Koji; Shimidzu, Naoki

    2009-03-01

    In angle-multiplexed holographic memory, the full width at half maximum of the Bragg selectivity curves is dependent on the angle formed between the medium and incident laser beams. This indicates the possibility of high density and high multiplexing number by varying the angular intervals between adjacent holograms. We propose an angular interval scheduling for closely stacking holograms into medium even when the angle range is limited. We obtained bit error rates of the order of 10-4 under the following conditions: medium thickness of 1 mm, laser beam wavelength of 532 nm, and angular multiplexing number of 300.

  15. Fission fragment angular distribution in heavy ion induced fission

    Directory of Open Access Journals (Sweden)

    S. Soheyli

    2006-06-01

    Full Text Available   We have calculated the fission fragment angular anisotropy for 16O + 232Th,12C + 236U , 11B + 237 Np , 14 N + 232 Th , 11B + 235U , 12C + 232Th systems with the saddle point statistical model and compared the fission fragment angular anisotropy for these systems. This comparison was done with two methods a without neutron correction and b with neutron correction. Also we studied normal and anomalous behavior of the fission fragment angular anisotropy. Finally, we have predicted the average emitted neutron from compound nuclei considering the best fit for each system.

  16. Fission fragment angular distribution in heavy ion induced fission

    OpenAIRE

    S. Soheyli; I. Ziaeian

    2006-01-01

      We have calculated the fission fragment angular anisotropy for 16O + 232Th,12C + 236U , 11B + 237 Np , 14 N + 232 Th , 11B + 235U , 12C + 232Th systems with the saddle point statistical model and compared the fission fragment angular anisotropy for these systems. This comparison was done with two methods a) without neutron correction and b) with neutron correction. Also we studied normal and anomalous behavior of the fission fragment angular anisotropy. Finally, we have predicted the averag...

  17. Angular absorption of iridium - ICW12 needles: practical considerations

    International Nuclear Information System (INIS)

    Szymczyk, W.; Lesiak, J.

    1984-01-01

    An analysis was made of two potential sources of error in Ir 192 dosimetry: the effect of angular absorption and the differences in the ionization constants found in literature. Corrections for selfabsorption in the ICW12 iridium source were determined from measurements and calculations. It was found that the decrease in the dose caused by the angular absorption in the central therapeutic area of a typical implantation can exceed 5 percent. The need for employing the concept of ''constant exposure rate'' is stressed as well as that for using angular absorption in the form of absorption. 13 refs., 6 figs., 1 tab. (author)

  18. Atención farmacéutica en personas que han sufrido episodios coronarios agudos (estudio TOMCOR

    Directory of Open Access Journals (Sweden)

    Álvarez de Toledo Flor

    2001-01-01

    Full Text Available Fundamento: Este estudio valora los efectos de un nuevo modelo de trabajo en las farmacias, denominado Atención Farmacéutica, frente al modelo tradicional. Se pretende conocer su factibilidad y las diferencias, potencialmente debidas a la Atención Farmacéutica, respecto de los resultados de salud de la farmacoterapia usada, en una muestra de pacientes que han sufrido episodios coronarios agudos. Métodos: Es un estudio prospectivo con un grupo de intervención (330 personas y un grupo control (405 personas, realizado en 83 farmacias de Asturias, Barcelona, Madrid y Vizcaya, en las que se hizo seguimiento durante un año del uso de medicamentos en 735 personas, de las cuales finalizaron el estudio 600. Resultados: Hubo diferencias favorables al grupo intervención, respecto de: a uso de servicios sanitarios indicativos de mayor morbilidad, tales como la frecuencia de consultas hospitalarias urgentes por paciente 1,27Interv. (IC95 %:1,10 a 1,44 y 1,63Contr.(IC95 %:1,36 a 1,90 o los días promedio de UCI por paciente hospitalizado: 2,46Interv.(IC95 %:1,56 a 3,36 y 5,87Contr.(IC95 %: 3,57 a 8,17, por causa cardiológica; b calidad de vida con diferencia de 4,7 (p < 0,05 en la dimensión de función física; c conocimiento de factores de riesgo de enfermedad coronaria, promedio de +10 % (p < 0,02 - 0,07, según dimensión; d identificación nominal de los medicamentos usados +10 % (p < 0,01; importancia subjetiva otorgada a los antiagregantes + 12 % (p < 0,009, los beta-bloqueantes, así como sus efectos +25 % (p < 0,02; y e satisfacción con la AF y percepción de la competencia profesional, promedio de + 12 % (p < 0,000 - 0,05, según dimensión. Conclusiones: Los valores menores de: demanda individual urgente coronaria, frecuencia de hospitalizaciones y número de días de Unidad de Cuidados Intensivos coronaria por hospitalización, sugerirían que los pacientes que tras un episodio coronario agudo reciben Atención Farmacéutica tienden a

  19. Atención farmacéutica en personas que han sufrido episodios coronarios agudos (estudio tomcor

    Directory of Open Access Journals (Sweden)

    Flor Álvarez de Toledo

    2001-01-01

    Full Text Available Fundamento: Este estudio valora los efectos de un nuevo modelo de trabajo en las farmacias, denominado Atención Farmacéutica, frente al modelo tradicional. Se pretende conocer su factibilidad y las diferencias, potencialmente debidas a la Atención Farmacéutica, respecto de los resultados de salud de la farmacoterapia usada, en una muestra de pacientes que han sufrido episodios coronarios agudos. Métodos: Es un estudio prospectivo con un grupo de intervención (330 personas y un grupo control (405 personas, realizado en 83 farmacias de Asturias, Barcelona, Madrid y Vizcaya, en las que se hizo seguimiento durante un año del uso de medicamentos en 735 personas, de las cuales finalizaron el estudio 600. Resultados: Hubo diferencias favorables al grupo intervención, respecto de: a uso de servicios sanitarios indicativos de mayor morbilidad, tales como la frecuencia de consultas hospitalarias urgentes por paciente 1,27Interv. (IC95 %:1,10 a 1,44 y 1,63Contr.(IC95 %:1,36 a 1,90 o los días promedio de UCI por paciente hospitalizado: 2,46Interv.(IC95 %:1,56 a 3,36 y 5,87Contr.(IC95 %: 3,57 a 8,17, por causa cardiológica; b calidad de vida con diferencia de 4,7 (p < 0,05 en la dimensión de función física; c conocimiento de factores de riesgo de enfermedad coronaria, promedio de +10 % (p < 0,02 - 0,07, según dimensión; d identificación nominal de los medicamentos usados +10 % (p < 0,01; importancia subjetiva otorgada a los antiagregantes + 12 % (p < 0,009, los beta-bloqueantes, así como sus efectos +25 % (p < 0,02; y e satisfacción con la AF y percepción de la competencia profesional, promedio de + 12 % (p < 0,000 – 0,05, según dimensión. Conclusiones: Los valores menores de: demanda individual urgente coronaria, frecuencia de hospitalizaciones y número de días de Unidad de Cuidados Intensivos coronaria por hospitalización, sugerirían que los pacientes que tras un episodio coronario agudo reciben Atención Farmacéutica tienden a

  20. Análisis del polimorfismo rs1799983 del locus NOS3 y su relación con los efectos agudos de la radioterapia

    OpenAIRE

    Córdoba, E. E.; Abba, Martin Carlos; Lacunza, Ezequiel; Güerci, Alba M.

    2013-01-01

    Para el tratamiento del cáncer, la radioterapia es la modalidad no quirúrgica más importante dentro de las terapéuticas oncológicas. Si bien la eficacia de este tratamiento en la erradicación del tumor depende de la dosis total de radiación impartida, la tolerancia del tejido sano es el factor que limita el tratamiento. Al respecto, se ha observado que algunos pacientes desarrollan efectos secundarios agudos en estos tejidos. Debido a que la radioterapia ejerce efectos citotóxicos a través de...

  1. Efeito agudo da imagética no desempenho de lances livres e percepção de autoeficácia em atletas

    OpenAIRE

    Thiago Ferreira Dias Kanthack; Marcelo Bigliassi; Lenamar Fiorese Vieira; Leandro Ricardo Altimari

    2013-01-01

    DOI: http://dx.doi.org/10.5007/1980-0037.2014v16n1p47 O esporte cada vez mais diferencia vencedores e perdedores por mínimos detalhes. No basquetebol um fator diferenciador é o lance livre. Sessões de imagética motora (IMA) vêm sendo estudada como um ergogênico sobre o desempenho de lance livre, porém, pouco se estuda o seu efeito agudo, principalmente, em atletas. O objetivo desse estudo foi verificar o efeito de uma sessão prévia de treinamento mental sobre o desempenho no lance liv...

  2. Efeitos agudos e crônicos de um programa de alongamento estático e dinâmico no rendimento em jovens atletas do futebol

    OpenAIRE

    Gonçalves,Diego Laureano; Pavão,Tiago Sebastiá; Dohnert,Marcelo Baptista

    2013-01-01

    INTRODUÇÃO: O alongamento é uma técnica terapêutica e pode ser utilizada como forma de aquecimento para aumentar a flexibilidade ou diminuir a dor ao longo do movimento, com objetivos na melhora da performance e redução do risco de lesões. OBJETIVO: Verificar os efeitos agudos e crônicos de um programa de alongamento estático em relação ao dinâmico na performance em jovens atletas do futebol. MÉTODOS: Estudo clínico randomizado de equivalência realizado entre agosto e novembro de 2010 junto à...

  3. Impacto Pronóstico de los Síndromes Geriátricos en Pacientes Ancianos con Síndrome Coronario Agudo

    OpenAIRE

    Bonanad Lozano, Clara

    2015-01-01

    Los síndromes geriátricos pueden predecir eventos adversos en el contexto del síndrome coronario agudo más allá de la propia edad y de los clásicos factores de riesgo cardiovascular. El objetivo de la presente tesis doctoral fue cuantificar y evaluar un amplio espectro de síndromes geriátricos en pacientes supervivientes a la fase aguda de un síndrome coronario. Se incluyeron un total de 342 pacientes mayores de 65 años que ingresaron de forma consecutiva en el servicio de Cardiología de un ú...

  4. EL ESTRÉS AGUDO INTERFIERE CON LA EVOCACIÓN Y PROMUEVE LA EXTINCIÓN DE LA MEMORIA ESPACIAL EN EL LABERINTO DE BARNES

    OpenAIRE

    JULIETA TRONCOSO; MARISOL LAMPREA; DIANA MARCELA CUESTAS; ALEJANDRO MÚNERA

    2010-01-01

    Para evaluar los efectos del estrés agudo sobre la recuperación y la extinción de la memoria espacial, se utilizaron ratas entrenadas en el laberinto circular de Barnes. El entrenamiento consistió de 8 ensayos de adquisición (intervalo entre ensayos, IEE, de 5 min) en donde los animales debían aprender a encontrar una caja meta, ubicada en uno de los 18 agu- jeros del laberinto. Todos los animales adquirieron el aprendizaje espacial, ya que invirtieron menos tiempo en encontrar la caja meta y...

  5. O problema do trabalho infantil na agricultura familiar: o caso da produção de tabaco em Agudo-RS

    Directory of Open Access Journals (Sweden)

    Joel Orlando Bevilaqua Marin

    2012-12-01

    Full Text Available O objetivo do artigo é analisar a emergência do problema do trabalho infantil no cultivo de tabaco em Agudo, desencadeado pela promulgação do Decreto n. 6.481/2008, que trata das piores formas de trabalho infantil. Os procedimentos metodológicos utilizados foram a revisão bibliográfica, pesquisa documental e um estudo de caso, realizado no município de Agudo, Rio Grande do Sul. No estudo de caso, procurou-se obter dados quantitativos e qualitativos, por meio de questionários e entrevistas abertas, dirigidos para 27 agricultores familiares fumicultores, com filhos com menos de 18 anos de idade. Os resultados da pesquisa indicam a existência de um confronto entre diferentes concepções sobre o trabalho da criança no âmbito da agricultura familiar. Os dispositivos legais, os termos de compromissos e os contratos de integração na cadeia produtiva do fumo proíbem o trabalho de menores de 18 anos, fundamentando-se nos princípios internacionais da garantia do pleno desenvolvimento das crianças. Na perspectiva das famílias, o trabalho das crianças é entendido como "ajuda", forma de socialização e formação dos herdeiros. Portanto, os pais não concordam que se trata de uma forma perversa de exploração do trabalho dos próprios filhos.The aim of this paper is to analyze the emergence of the child labor problem in tobacco growing in Agudo (Rio Grande do Sul state, triggered by the promulgation of Act 6.481/2008, which addresses the worst child labor conditions. The methodological procedures used were the literature review, desk research and a case study, conducted in the municipality of Agudo. In the case study, we have tried to obtain quantitative and qualitative data through questionnaires and open interviews directed to 27 tobacco growers, and with teenagers and children under 18 years old. The survey results indicate the existence of a clash between different conceptions of child labor in small scale family farmers. The legal

  6. Medicações intracanal e sistêmica preconizadas nas faculdades de Odontologia brasileiras para o tratamento de urgência do abscesso periapical agudo

    OpenAIRE

    Vier-Pelisser, Fabiana Vieira; Garbin, Roberta Paniz; Só, Marcus Vinicius Reis; Marca, Caroline; Pelisser, Audrei

    2008-01-01

    Objetivo: Este estudo objetivou avaliar a medicação intracanal (MIC) e a medicação sistêmica (MS) preconizadas nas Faculdades de Odontologia (FO) do Brasil para atendimento de urgência do abscesso periapical agudo (APA). Metodologia: Questionários foram enviados para 141 FO brasileiras endereçados ao responsável pela Disciplina de Endodontia. As questões abordaram as MIC e MS prescritas na unidade para o tratamento de urgência do APA em suas três fases de progressão: inicial, em evolução e ev...

  7. Correlación clínica, laparoscópica e histológica en el abdomen agudo

    OpenAIRE

    María Elena Trujillo Toledo; Orestes Noel Mederos Curbelo; José Salice; Francisco Viamonte Montejo

    1995-01-01

    Se presentan 132 pacientes con diagnóstico clínico de abdomen agudo durante 1991 a 1993, a quienes se les realizó laparoscopia de urgencia. Las afecciones más frecuentes en que se realizó laparoscopia fueron: apendicitis aguda y las enfermedades ginecológicas. La efectividad de la laparoscopia en relación con el resultado histológico fue del 97,1 %, y no coincidió en 3 pacientes con diagnóstico laparoscópico de apendicitis aguda, hematosalpinx derecho y peritonitis pélvica, sin especificar fa...

  8. Efeitos agudos no desempenho do salto vertical após o agachamento com banda elástica de joelho

    OpenAIRE

    Gomes, Willy Andrade; Silva, Josinaldo Jarbas da; Soares, Enrico Gori; Serpa, Erica Paes; Corrêa, Daniel Alves; Vilela Junior, Guanis de Barros; Lopes, Charles Ricardo; Marchetti, Paulo Henrique

    2015-01-01

    INTRODUÇÃO: A banda elástica pode afetar o desempenho durante exercícios de alta intensidade, reduzindo a ativação muscular, o que pode influenciar o efeito de potencialização pós-ativação, que depende de alta intensidade para o exercício subsequente que visa potência. Objetivo: Verificar os efeitos agudos no desempenho do salto com contramovimento (SCM) após o agachamento em alta intensidade com e sem o uso da banda elástica de joelhos em sujeitos treinados em força.MÉTODOS: Participaram do ...

  9. Sistema informático para la gestión de la información hospitalaria del infarto agudo de miocardio (RHIMA

    Directory of Open Access Journals (Sweden)

    Yanier Coll Muñoz

    2015-10-01

    Full Text Available Introducción: La difícil recopilación de información sobre la prevalencia y desarrollo del infarto agudo de miocardio imposibilita medir la calidad del tratamiento durante la evolución de la enfermedad en un determinado grupo de pacientes.Objetivo: Desarrollar un sistema informático que permita la gestión de la información hospitalaria del infarto agudo de miocardio en el Servicio de Cardiología.Método: Se identificaron las variables necesarias para la confección del registro, divididas por bloques relacionados con la atención prehospitalaria, el síndrome coronario agudo, la atención en Unidades de Cuidados Coronarios y el egreso. Se creó un sistema informático que utiliza NetBeans como IDE de programación, Apache como servidor web y la base de datos en MySQL; como lenguaje de programación se utilizó PHP con la infraestructura digital (framework Yii del lado del servidor y JavaScript con el framework ExtJs 4.1.1 del lado del cliente. Como modelador de base de datos se utilizó ER/Studio.Resultados: Se conformó el Registro Hospitalario de Infarto Agudo de Miocardio (RHIMA para su aplicación en el Hospital Gustavo Aldereguía Lima de Cienfuegos, Cuba; se lograron obtener datos estadísticos inmediatos que permitieron realizar un análisis de la atención a los pacientes con esta enfermedad.Conclusiones: Se desarrolló un sistema informático web capaz de gestionar la información del IAM. Su diseño, acorde al Sistema Nacional de Salud de Cuba, tiene en cuenta las características epidemiológicas y demográficas de la población cubana y brindan indicadores de calidad en la terapéutica para el registro de la información del IAM, ajustadas a las recomendaciones de las principales Guías de Práctica Clínica.

  10. Troponina T vs Troponina I como Valor Predictivo para Síndrome Coronario Agudo en menores de 80 Años

    OpenAIRE

    PE Pla Cala; EA Polo Barranco; S Peñaloza Parra; A. Cadena Bonfanti

    2015-01-01

    Resumen – Actualmente en la injuria miocárdica, ha tenido gran relevancia clínica la utilidad de las troponinas como método diagnóstico, repercutiendo en el manejo del síndrome coronario agudo. Objetivo: Analizar la importancia de los biomarcadores troponina T e I y otros elementos adyuvantes que cumplen un papel trascendental como es el electrocardiograma y los diferentes métodos invasivos, el cual brinda una orientación para la concepción de un diagnóstico oportuno que permita tomar las acc...

  11. Efectos agudos de la actividad física y los videojuegos activos sobre las funciones cognitivas en jóvenes y adultos mayores

    OpenAIRE

    López García, Jesús

    2017-01-01

    La presente tesis doctoral consiste en intentar aportar nuevas evidencias científicas que traten de ampliar y clarificar el conocimiento existente referente a los efectos agudos de la actividad física aeróbica y los videojuegos activos sobre las funciones cognitivas en dos muestras poblacionales diferentes: los jóvenes adultos y los adultos mayores. Como síntesis general, podríamos indicar que el fin de las series experimentales desarrolladas en esta tesis tratan de estudiar si la práctic...

  12. Marcadores pro y antiinflamatorios en la enfermedad arterial coronaria y el síndrome isquémico coronario agudo

    OpenAIRE

    Fragoso-Lona,José Manuel; Ramírez-Bello,Julián; Cruz-Robles,David; Pérez-Méndez,Oscar; de la Peña,Aurora; Vargas-Alarcón,Gilberto

    2009-01-01

    La inflamación tiene un papel importante en las lesiones ateroscleróticas, ya que afecta a diversos estados del desarrollo del ateroma, que van desde el reclutamiento inicial de leucocitos hasta la rotura de la placa aterosclerótica inestable. Las reacciones inflamatorias en las placas ateroscleróticas coronarias son determinantes en el curso clínico de los pacientes con síndrome coronario agudo y enfermedad arterial coronaria. Estudios recientes sugieren que varias moléculas inflamatorias, q...

  13. Ejercicio y sensación de posición articular en la rodilla. Efecto agudo del ejercicio de calentamiento y del ejercicio intenso, en acciones musculares concéntricas y excéntricas.

    OpenAIRE

    Duilio Carughi Bonelli

    2017-01-01

    Objetivo: Describir el efecto agudo de una rutina de calentamiento normalmente utilizada en deportes que llevan algún contacto con el suelo, así como observar y comparar la sensación de la posición articular de la rodilla del miembro dominante luego de realizar una exposición a estímulos de fatiga, ya sea en contracción excéntrica o concéntrica para así comparar su efecto agudo.Diseño: Descriptivo, comparación de medidas repetidas e independientesMuestra: 20 sujetos con una edad media de 19.5...

  14. Terapia ocupacional en un hospital general de pacientes agudos = Occupational therapy in a general hospital for acute pacients

    Directory of Open Access Journals (Sweden)

    Ocello, M. G

    2006-09-01

    Full Text Available RESUMEN Desde su creación, el Hospital Provincial “Dr. José María Cullen” posee la característica de ser un hospital de emergencias, sostenido por la Sociedad de Beneficencia y la Hermanas de la Caridad.Su funcionamiento responde a un Modelo Clínico-Asistencial, lo cual influye en la inserción de Terapia Ocupacional debiendo adaptar sus funciones a las características de la Institución.Los marcos de referencia teóricos y programas que se implementandeber ser acordes con las necesidades surgidas de un Hospital General de Agudos y de emergencias.En el Sector de Terapia Ocupacional se desarrolla la actividad docente cumpliendo con los requisitos reglamentados por el Ministerio de Salud de la Provincia de Santa Fe.ABSTRACT Ever since its start the Provincial Hospital “Dr. José María Cullen” is characterised for being an emergency hospital under the guidance of the Benfit Society of Hermanas de la Caridad.Its function responds to a Clinical Assistential Model, which influences the insertion of Occupational Therapy, adapting its functiones to the characteristics of the Institution as and when called for.The theoretical points of reference and programmes that are used must be in accordance with tehe necessities that appear in an Acute and Emergency General Hospital.In the Occupational Therapy Sector the teaching activity is developed as required by rules and regulations of the Ministry of Health for the Province of Santa Fe.

  15. Daño pulmonar agudo relacionado con la transfusión (Trali y Bartonelosis aguda

    Directory of Open Access Journals (Sweden)

    Douglas López de Guimaraes

    2006-07-01

    Full Text Available Se presenta el caso de un varón de 22 años procedente de la periferia de la ciudad de Huaraz, Perú, que acude al Hospital "Victor Ramos Guardia" de Huaraz con un tiempo de enfermedad de 14 días, febril, pálido e ictérico, en el frotis de sangre periférica se encuentran formas bacilares de Bartonella bacilliformis en 99% de la lámina; se inicia tratamiento antibiótico con ceftriaxona y ciprofloxacino. Al día siguiente se le indica transfusión de dos paquetes globulares (puesto que tenía 6,2 g/dL de Hb, dos horas después presenta dolor toráxico, tos seca exigente, vómitos, dificultad respiratoria y cianosis, en la auscultación se encuentran roncantes y crepitantes, la radiografía de tórax muestra infiltrado alveolar difuso a predominio derecho. Es trasladado a la UCI donde recibe oxígeno con máscara de reservorio, dopamina, corticoides y se inicia el monitoreo hemodinámico; responde en forma satisfactoria, sale de alta con frotis negativo a Bartonella bacilliformis. Es el primer caso de daño pulmonar agudo relacionado con la transfusión (TRALI asociado con Bartonelosis aguda con cuadro clínico - radiológico y evolución compatible, es importante distinguir entre la complicación pulmonar debido a la sepsis grave por Bartonelosis aguda, que puede producir un cuadro clínico similar y el TRALI.

  16. Helicons in uniform fields. II. Poynting vector and angular momenta

    Science.gov (United States)

    Stenzel, R. L.; Urrutia, J. M.

    2018-03-01

    The orbital and spin angular momenta of helicon modes have been determined quantitatively from laboratory experiments. The current density is obtained unambiguously from three dimensional magnetic field measurements. The only approximation made is to obtain the electric field from Hall Ohm's law which is usually the case for low frequency whistler modes. This allows the evaluation of the Poynting vector from which the angular momentum is obtained. Comparing two helicon modes (m = 0 and m = 1), one can separate the contribution of angular momentum of a rotating and non-rotating wave field. The orbital angular momentum is important to assess the wave-particle interaction by the transverse Doppler shift of rotating waves which has not been considered so far.

  17. Angular Momentum Transport in Quasi-Keplerian Accretion Disks ...

    Indian Academy of Sciences (India)

    R. Narasimhan (Krishtel eMaging) 1461 1996 Oct 15 13:05:22

    Keplerian accretion disk yield results that are inconsistent with the generally accepted model. If correct, the ideas proposed by Hayashi &. Matsuda would radically alter our understanding of the nature of the angular momentum transport in the disk, ...

  18. Application of instantaneous angular acceleration to diesel engine fault diagnosis

    Science.gov (United States)

    Ren, Yunpeng; Hu, Tianyou; Liu, Xin

    2005-12-01

    Diesel engine is a kind of important power generating machine, of which the running state monitoring and fault diagnosis attracts increasing attention. The theory and the method of diesel engine fault diagnosis based on angular acceleration measurement were studied, since angular acceleration contains a lot of information for diesel engine fault diagnosing and its power balance evaluating. USB data acquisition system was designed for the angular acceleration measurement, and it was composed with AVRAT09S8515 micro-processor and PDIUSBD12 USB interface IC. At the same time, the high speed micro-processor AVRAT09S8515 with unique function of automatically capturing the rising or falling edge of square wave was studied, and it was utilized in the diesel engine's crankshaft angular acceleration measuring system. The software and hardware of the whole system was designed, which supplied a whole solution to diesel engine fault diagnosis and power balance evaluation between each cylinder.

  19. Dissipation of angular momentum in light heavy ion collision

    International Nuclear Information System (INIS)

    Bhattacharya, C.; Bhattacharya, S.; Bhattacharjee, T.; Dey, A.; Kundu, S.; Krishan, K.; Banerjee, S.R.; Das, P.; Basu, S.K.

    2003-01-01

    The fragment emission has been studied and is reported how angular momentum dissipation can be estimated in a model independent manner using additional information from the fusion-fission component of the fragment emission data

  20. The search for and registration of superweak angular ground motions

    International Nuclear Information System (INIS)

    Budagov, J.; Lyablin, M.; Shirkov, G.

    2013-01-01

    The Earth's surface angular oscillations of the seismic, industrial and terrestrial origins have been registered with the high-resolution inclinometer of a new design concept. The microseismic peak was first recognized in the ground microradian motion

  1. Large-uncertainty intelligent states for angular momentum and angle

    International Nuclear Information System (INIS)

    Goette, Joerg B; Zambrini, Roberta; Franke-Arnold, Sonja; Barnett, Stephen M

    2005-01-01

    The equality in the uncertainty principle for linear momentum and position is obtained for states which also minimize the uncertainty product. However, in the uncertainty relation for angular momentum and angular position both sides of the inequality are state dependent and therefore the intelligent states, which satisfy the equality, do not necessarily give a minimum for the uncertainty product. In this paper, we highlight the difference between intelligent states and minimum uncertainty states by investigating a class of intelligent states which obey the equality in the angular uncertainty relation while having an arbitrarily large uncertainty product. To develop an understanding for the uncertainties of angle and angular momentum for the large-uncertainty intelligent states we compare exact solutions with analytical approximations in two limiting cases

  2. Efficient evaluation of angular power spectra and bispectra

    Science.gov (United States)

    Assassi, Valentin; Simonović, Marko; Zaldarriaga, Matias

    2017-11-01

    Angular statistics of cosmological observables are hard to compute. The main difficulty is due to the presence of highly-oscillatory Bessel functions which need to be integrated over. In this paper, we provide a simple and fast method to compute the angular power spectrum and bispectrum of any observable. The method is based on using an FFTlog algorithm to decompose the momentum-space statistics onto a basis of power-law functions. For each power law, the integrals over Bessel functions have a simple analytical solution. This allows us to efficiently evaluate these integrals, independently of the value of the multipole l. In particular, this method significantly speeds up the evaluation of the angular bispectrum compared to existing methods. To illustrate our algorithm, we compute the galaxy, lensing and CMB temperature angular power spectrum and bispectrum.

  3. The decay of orbital angular momentum entanglement in atmospheric turbulence

    CSIR Research Space (South Africa)

    Roux, FS

    2013-07-01

    Full Text Available Salam International Centre for Theoretical Physics, Trieste, Italy, 8-12 July 2013 The decay of orbital angular momentum entanglement in atmospheric turbulence Roux FS CSIR, National Laser Centre, Pretoria, 0001 Corresponding email: FSroux...

  4. Pluto Moons exhibit Orbital Angular Momentum Quantization per Mass

    Directory of Open Access Journals (Sweden)

    Potter F.

    2012-10-01

    Full Text Available The Pluto satellite system of the planet plus five moons is shown to obey the quan- tum celestial mechanics (QCM angular momentum per mass quantization condition predicted for any gravitationally bound system.

  5. Design and Implementation of a Digital Angular Rate Sensor

    Directory of Open Access Journals (Sweden)

    Zhen Peng

    2010-10-01

    Full Text Available With the aim of detecting the attitude of a rotating carrier, the paper presents a novel, digital angular rate sensor. The sensor consists of micro-sensing elements (gyroscope and accelerometer, signal processing circuit and micro-processor (DSP2812. The sensor has the feature of detecting three angular rates of a rotating carrier at the same time. The key techniques of the sensor, including sensing construction, sensing principles, and signal processing circuit design are presented. The test results show that the sensor can sense rolling, pitch and yaw angular rate at the same time and the measurement error of yaw (or pitch angular rate and rolling rate of the rotating carrier is less than 0.5%.

  6. Cardiomiopatía hipertrófica y síndrome de Wolff-Parkinson-White con bloqueo aurículo-ventricular completo. Una extraña asociación: Reporte de un caso Hypertrophic cardiomyopathy and Wolff-Parkinson-White Syndrome with complete auriculoventricular block. A strange association: Report of one case

    Directory of Open Access Journals (Sweden)

    Franco J Vallejo

    2007-12-01

    Full Text Available Paciente masculino de 22 años quien ingresa por episodio de síncope. En el electrocardiograma se encuentra patrón de Wolff-Parkinson-White y signos de sobrecarga auricular e hipertrofia ventricular izquierda con bloqueo aurículo-ventricular completo. El ecocardiograma transtorácico es compatible con cardiomiopatía hipertrófica no obstructiva. Se lleva a estudio electrofisiológico donde se encuentra pre-excitación por vía accesoria y bloqueo aurículo-ventricular infrahisiano; se realiza ablación y se implanta marcapasos bicameral.A 22 years old male patient is admitted for a syncope episode. An electrocardiogram shows a Wolff-Parkinson-White pattern and signs of auricular overload with left ventricular hypertrophy and complete auriculoventricular block. The transthoracic echocardiogram is compatible with non-obstructive hypertrophic cardiomyopathy. An electrophysiological study is carried out, finding pre-excitation through an accessory way and infra-His auriculoventricular block. An ablation is performed and a bicameral pacemaker is implanted.

  7. The Effects of Isokinetic Strength Training on Strength at Different Angular Velocities: a Pilot Study

    Directory of Open Access Journals (Sweden)

    Tuğba Kocahan

    2017-09-01

    Conclusion: It was shown that angular velocity is important in isokinetic training, and that training at high angular velocities provides strength increases at lower angular velocities, but would not increase strength at angular velocities above the training level. For this reason, it is thought that in the preparation of an isokinetic strength training protocol, angular velocities need to be taken into account. For any athlete, the force at the angular velocity required in her/his sports branch needs to be considered.

  8. Spacecraft Angular Velocity Estimation Algorithm Based on Orientation Quaternion Measurements

    Directory of Open Access Journals (Sweden)

    M. V. Li

    2016-01-01

    Full Text Available The spacecraft (SC mission involves providing the appropriate orientation and stabilization of the associated axes in space. One of the main sources of information for the attitude control system is the angular rate sensor blocks. One way to improve a reliability of the system is to provide a back up of the control algorithms in case of failure of these blocks. To solve the problem of estimation of SP angular velocity vector in the inertial system of coordinates with a lack of information from the angular rate sensors is supposed the use of orientation data from the star sensors; in this case at each clock of the onboard digital computer. The equations in quaternions are used to describe the kinematics of rotary motion. Their approximate solution is used to estimate the angular velocity vector. Methods of modal control and multi-dimensional decomposition of a control object are used to solve the problem of observation and identification of the angular rates. These methods enabled us to synthesize the SP angular velocity vector estimation algorithm and obtain the equations, which relate the error quaternion with the calculated estimate of the angular velocity. Mathematical modeling was carried out to test the algorithm. Cases of different initial conditions were simulated. Time between orientation quaternion measurements and angular velocity of the model was varied. The algorithm was compared with a more accurate algorithm, built on more complete equations. Graphs of difference in angular velocity estimation depending on the number of iterations are presented. The difference in angular velocity estimation is calculated from results of the synthesized algorithm and the algorithm for more accurate equations. Graphs of error distribution for angular velocity estimation with initial conditions being changed are also presented, and standard deviations of estimation errors are calculated. The synthesized algorithm is inferior in accuracy assessment to

  9. A Very Fast and Angular Momentum Conserving Tree Code

    Energy Technology Data Exchange (ETDEWEB)

    Marcello, Dominic C., E-mail: dmarce504@gmail.com [Department of Physics and Astronomy, and Center for Computation and Technology Louisiana State University, Baton Rouge, LA 70803 (United States)

    2017-09-01

    There are many methods used to compute the classical gravitational field in astrophysical simulation codes. With the exception of the typically impractical method of direct computation, none ensure conservation of angular momentum to machine precision. Under uniform time-stepping, the Cartesian fast multipole method of Dehnen (also known as the very fast tree code) conserves linear momentum to machine precision. We show that it is possible to modify this method in a way that conserves both angular and linear momenta.

  10. Single crystal analyser accepting the narrowest neutron angular profile

    International Nuclear Information System (INIS)

    Abbas, Sohrab; Wagh, Apoorva G.; Strobl, Markus; Treimer, Wolfgang

    2007-01-01

    We have designed, fabricated and tested a novel silicon single crystal analyser. It accepts a 0.21 arcsec (FWHM) wide angular profile of a monochromatic 5.24 A neutron beam, in agreement with its design. This is the narrowest and sharpest acceptance angular profile attained to date in the world with a neutron analyser. This analyser will facilitate SUSANS experiments probing wave vector transfers Q ∼ 10 -6 A -1 . (author)

  11. Gamma-gamma angular correlation measurement in the 100 Ru

    International Nuclear Information System (INIS)

    Kenchian, G.

    1990-01-01

    An angular correlation automatic spectrometer with two Ge(Li) detectors has been developed. The spectrometer moves automatically, controlled by a microcomputer. The gamma-gamma directional angular correlations of coincidence transitions have been measured in 100 Ru nuclide, following the β + and electron capture of 100 Rh. The 100 Rh source has been produced with 100 Ru(p,n) 100 Rh reaction, using the proton beam of the Cyclotron Accelerator insiding in 100 Ru isotope. (author)

  12. A Very Fast and Angular Momentum Conserving Tree Code

    International Nuclear Information System (INIS)

    Marcello, Dominic C.

    2017-01-01

    There are many methods used to compute the classical gravitational field in astrophysical simulation codes. With the exception of the typically impractical method of direct computation, none ensure conservation of angular momentum to machine precision. Under uniform time-stepping, the Cartesian fast multipole method of Dehnen (also known as the very fast tree code) conserves linear momentum to machine precision. We show that it is possible to modify this method in a way that conserves both angular and linear momenta.

  13. The Angular Momentum of Baryons and Dark Matter Halos Revisited

    Science.gov (United States)

    Kimm, Taysun; Devriendt, Julien; Slyz, Adrianne; Pichon, Christophe; Kassin, Susan A.; Dubois, Yohan

    2011-01-01

    Recent theoretical studies have shown that galaxies at high redshift are fed by cold, dense gas filaments, suggesting angular momentum transport by gas differs from that by dark matter. Revisiting this issue using high-resolution cosmological hydrodynamics simulations with adaptive-mesh refinement (AMR), we find that at the time of accretion, gas and dark matter do carry a similar amount of specific angular momentum, but that it is systematically higher than that of the dark matter halo as a whole. At high redshift, freshly accreted gas rapidly streams into the central region of the halo, directly depositing this large amount of angular momentum within a sphere of radius r = 0.1R(sub vir). In contrast, dark matter particles pass through the central region unscathed, and a fraction of them ends up populating the outer regions of the halo (r/R(sub vir) > 0.1), redistributing angular momentum in the process. As a result, large-scale motions of the cosmic web have to be considered as the origin of gas angular momentum rather than its virialised dark matter halo host. This generic result holds for halos of all masses at all redshifts, as radiative cooling ensures that a significant fraction of baryons remain trapped at the centre of the halos. Despite this injection of angular momentum enriched gas, we predict an amount for stellar discs which is in fair agreement with observations at z=0. This arises because the total specific angular momentum of the baryons (gas and stars) remains close to that of dark matter halos. Indeed, our simulations indicate that any differential loss of angular momentum amplitude between the two components is minor even though dark matter halos continuously lose between half and two-thirds of their specific angular momentum modulus as they evolve. In light of our results, a substantial revision of the standard theory of disc formation seems to be required. We propose a new scenario where gas efficiently carries the angular momentum generated

  14. Edema agudo hemorrágico da infância: relato de três casos Acute hemorrhagic edema of infancy: report of three cases

    Directory of Open Access Journals (Sweden)

    Paulo Sergio Emerich

    2011-12-01

    Full Text Available O Edema Agudo Hemorrágico da Infância é uma vasculite leucocitoclástica pouco frequente, que ocorre, quase exclusivamente, em crianças entre 4 meses e 2 anos de idade. Caracteriza-se, clinicamente, pela tríade febre, lesões purpúricas na face, pavilhões auriculares e extremidades e edema. Embora os achados cutâneos sejam dramáticos e de surgimento rápido, o prognóstico é favorável, com resolução espontânea dentro de 1 a 3 semanas. Descrevem-se três casos cujos achados clínicos e histopatológicos são característicos de edema agudo hemorrágico da infância.Acute Hemorrhagic Edema of Infancy is an infrequent leukocytoclastic vasculitis which occurs almost exclusively in children between 4 months and 2 years of age. It is clinically characterized by the triad fever, purpuric lesions on the face, auricular pinna and extremities, and edema. Although the cutaneous findings are dramatic and of rapid onset, the prognosis is favorable, with spontaneous resolution within 1 to 3 weeks. Three cases are described in which clinical and histopathological findings are characteristic of acute hemorrhagic edema of infancy.

  15. Investigación de vectores y reservorios en brote de Chagas agudo por posible transmisión oral en Aguachica, Cesar, Colombia

    Directory of Open Access Journals (Sweden)

    Hugo Soto

    2014-04-01

    Full Text Available Colombia tiene un registro de 11 casos de Chagas agudo y 80 casos por contaminación oral con Trypanosoma cruzi. Este trabajo analiza los hallazgos entomológicos y parasitológicos del brote de Aguachica, Cesar, en 2010. Un grupo interdisciplinario de profesionales de la salud y de universidades regionales realizó las pruebas de laboratorio a los pacientes y el estudio del foco de transmisión. Se detectaron 11 casos agudos de enfermedad de Chagas en una sola familia con vivienda sin triatominos domiciliados y, Rhodnius pallescens, Pantrongylus geniculatus, Eratyrus cuspidatus y dos Didelphis marsupialis infectados con T. cruzi en palmas de Attalea butyracea y Elaeis oleifera del área urbana de Aguachica. Se analiza la participación del R. pallescens y el rol de las palmas en el ciclo silvestre de T. cruzi y para la transmisión oral de la enfermedad de Chagas. Incursiones esporádicas de R. pallescens, P. geniculatus y E. cuspidatus silvestres desde palmas cercanas al domicilio humano pueden provocar brotes cada vez más frecuentes de Chagas oral.

  16. Trastornos psiquiátricos frecuentes post infarto agudo al miocardio y su relación pronóstica. Revisión de la literatura.

    Directory of Open Access Journals (Sweden)

    Manuel Mallol Simmonds

    2017-07-01

    Full Text Available La enfermedad cardiovascular es la principal causa de muerte a nivel mundial. De ella, el Infarto Agudo al Miocardio (IAM y el Accidente Cerebrovascular (AVC se encuentran fuertemente asociados a los cambios ambientales y sociales del último tiempo, tales como aumento de ingesta de comida rápida, sedentarismo, tabaquismo, entre otros. Algunos trastornos psiquiátricos que aparecen a corto y largo plazo posterior al evento coronario agudo tienen una implicancia directa en la morbimortalidad cardiovascular y global. De ellos, la depresión representa el trastorno psiquiátrico más frecuente, pudiendo encontrarse en 3 de cada 10 pacientes que tuvieron un IAM. La depresión aumenta las hospitalizaciones, disminuye la adherencia terapéutica y empeora el pronóstico cardiovascular a largo plazo.  La fisiopatología en lo anterior es explicada en parte por alteraciones en el eje neuroendocrino y la respuesta al estrés, mientras que otros fenómenos permanecen aún desconocidos. Dentro de otros trastornos psiquiátricos asociados a un IAM se encuentran el delirium, ansiedad y trastornos de la personalidad. En función de lo anterior, se hace necesaria la incorporación de un sistema continuo de monitoreo y apoyo en salud mental en este grupo de pacientes para mejorar tanto su pronóstico como la calidad de vida.

  17. Efectividad del modelo de cuidado de enfermería para la familia de paciente con infarto agudo al miocardio en la unidad de cuidados intensivos

    Directory of Open Access Journals (Sweden)

    David Jahel Garcia Avendaño

    2015-05-01

    Full Text Available Introducción: Este protocolo de investigación tiene la finalidad de intervenir con la familia y determinar la efectividad del Modelo de Cuidado de Enfermería para la Familia de Paciente con Infarto Agudo al Miocardio (IAM en la Unidad de Cuidados Intensivos (UCI. Materiales y Métodos: Estudio descriptivo de intervención familiar. Resultados y Discusión: El 100% de las familias respondió afirmativamente que la enfermera familiar les informo sobre los cuidados a realizar en la familia según las necesidades detectadas, estableció un plan de intervención en la familia mismo que cumplió y se interesó para que dentro de lo posible la estancia en la familia sea agradable. Conclusiones: Los resultados de esta investigación de intervención a las familias de paciente con IAM en las UCI aporta resultados que apoyan la importancia de aplicar un Modelo de Cuidado de Enfermería Familiar en dichas unidades.Cómo citar este artículo: García DJ, Estrada MC, Gallegos M, Antuna AB. Efectividad del modelo de cuidado de enfermería para la familia de paciente con infarto agudo al miocardio en la unidad de cuidados intensivos. Rev Cuid. 2015; 6(1: 923-31. http://dx.doi.org/10.15649/cuidarte.v6i1.166

  18. Isotropic gates and large gamma detector arrays versus angular distributions

    International Nuclear Information System (INIS)

    Iacob, V.E.; Duchene, G.

    1997-01-01

    Angular information extracted from in-beam γ ray measurements are of great importance for γ ray multipolarity and nuclear spin assignments. In our days large Ge detector arrays became available allowing the measurements of extremely weak γ rays in almost 4π sr solid angle (e.g., EUROGAM detector array). Given the high detector efficiency it is common for the mean suppressed coincidence multiplicity to reach values as high as 4 to 6. Thus, it is possible to gate on particular γ rays in order to enhance the relative statistics of a definite reaction channel and/or a definite decaying path in the level scheme of the selected residual nucleus. As compared to angular correlations, the conditioned angular distribution spectra exhibit larger statistics because in the latter the gate-setting γ ray may be observed by all the detectors in the array, relaxing somehow the geometrical restrictions of the angular correlations. Since the in-beam γ ray emission is anisotropic one could inquire that gate setting as mentioned above, based on anisotropic γ ray which would perturb the angular distributions in the unfolded events. As our work proved, there is no reason to worry about this if the energy gate runs over the whole solid angle in an ideal 4π sr detector, i.e., if the gate is isotropic. In real quasi 4π sr detector arrays the corresponding quasi isotropic gate preserves the angular properties of the unfolded data, too. However extraction of precise angular distribution coefficient especially a 4 , requires the consideration of the deviation of the quasi isotropic gate relative to the (ideal) isotropic gate

  19. Smoothed dissipative particle dynamics with angular momentum conservation

    International Nuclear Information System (INIS)

    Müller, Kathrin; Fedosov, Dmitry A.; Gompper, Gerhard

    2015-01-01

    Smoothed dissipative particle dynamics (SDPD) combines two popular mesoscopic techniques, the smoothed particle hydrodynamics and dissipative particle dynamics (DPD) methods, and can be considered as an improved dissipative particle dynamics approach. Despite several advantages of the SDPD method over the conventional DPD model, the original formulation of SDPD by Español and Revenga (2003) [9], lacks angular momentum conservation, leading to unphysical results for problems where the conservation of angular momentum is essential. To overcome this limitation, we extend the SDPD method by introducing a particle spin variable such that local and global angular momentum conservation is restored. The new SDPD formulation (SDPD+a) is directly derived from the Navier–Stokes equation for fluids with spin, while thermal fluctuations are incorporated similarly to the DPD method. We test the new SDPD method and demonstrate that it properly reproduces fluid transport coefficients. Also, SDPD with angular momentum conservation is validated using two problems: (i) the Taylor–Couette flow with two immiscible fluids and (ii) a tank-treading vesicle in shear flow with a viscosity contrast between inner and outer fluids. For both problems, the new SDPD method leads to simulation predictions in agreement with the corresponding analytical theories, while the original SDPD method fails to capture properly physical characteristics of the systems due to violation of angular momentum conservation. In conclusion, the extended SDPD method with angular momentum conservation provides a new approach to tackle fluid problems such as multiphase flows and vesicle/cell suspensions, where the conservation of angular momentum is essential

  20. Initial angular momentum and flow in high energy nuclear collisions

    Science.gov (United States)

    Fries, Rainer J.; Chen, Guangyao; Somanathan, Sidharth

    2018-03-01

    We study the transfer of angular momentum in high energy nuclear collisions from the colliding nuclei to the region around midrapidity, using the classical approximation of the color glass condensate (CGC) picture. We find that the angular momentum shortly after the collision (up to times ˜1 /Qs , where Qs is the saturation scale) is carried by the "β -type" flow of the initial classical gluon field, introduced by some of us earlier. βi˜μ1∇iμ2-μ2∇iμ1 (i =1 ,2 ) describes the rapidity-odd transverse energy flow and emerges from Gauss's law for gluon fields. Here μ1 and μ2 are the averaged color charge fluctuation densities in the two nuclei, respectively. Interestingly, strong coupling calculations using anti-de Sitter/conformal field theory (AdS/CFT) techniques also find an energy flow term featuring this particular combination of nuclear densities. In classical CGC the order of magnitude of the initial angular momentum per rapidity in the reaction plane, at a time 1 /Qs , is |d L2/d η |≈ RAQs-3ɛ¯0/2 at midrapidity, where RA is the nuclear radius, and ɛ¯0 is the average initial energy density. This result emerges as a cancellation between a vortex of energy flow in the reaction plane aligned with the total angular momentum, and energy shear flow opposed to it. We discuss in detail the process of matching classical Yang-Mills results to fluid dynamics. We will argue that dissipative corrections should not be discarded to ensure that macroscopic conservation laws, e.g., for angular momentum, hold. Viscous fluid dynamics tends to dissipate the shear flow contribution that carries angular momentum in boost-invariant fluid systems. This leads to small residual angular momentum around midrapidity at late times for collisions at high energies.

  1. Smoothed dissipative particle dynamics with angular momentum conservation

    Energy Technology Data Exchange (ETDEWEB)

    Müller, Kathrin, E-mail: k.mueller@fz-juelich.de; Fedosov, Dmitry A., E-mail: d.fedosov@fz-juelich.de; Gompper, Gerhard, E-mail: g.gompper@fz-juelich.de

    2015-01-15

    Smoothed dissipative particle dynamics (SDPD) combines two popular mesoscopic techniques, the smoothed particle hydrodynamics and dissipative particle dynamics (DPD) methods, and can be considered as an improved dissipative particle dynamics approach. Despite several advantages of the SDPD method over the conventional DPD model, the original formulation of SDPD by Español and Revenga (2003) [9], lacks angular momentum conservation, leading to unphysical results for problems where the conservation of angular momentum is essential. To overcome this limitation, we extend the SDPD method by introducing a particle spin variable such that local and global angular momentum conservation is restored. The new SDPD formulation (SDPD+a) is directly derived from the Navier–Stokes equation for fluids with spin, while thermal fluctuations are incorporated similarly to the DPD method. We test the new SDPD method and demonstrate that it properly reproduces fluid transport coefficients. Also, SDPD with angular momentum conservation is validated using two problems: (i) the Taylor–Couette flow with two immiscible fluids and (ii) a tank-treading vesicle in shear flow with a viscosity contrast between inner and outer fluids. For both problems, the new SDPD method leads to simulation predictions in agreement with the corresponding analytical theories, while the original SDPD method fails to capture properly physical characteristics of the systems due to violation of angular momentum conservation. In conclusion, the extended SDPD method with angular momentum conservation provides a new approach to tackle fluid problems such as multiphase flows and vesicle/cell suspensions, where the conservation of angular momentum is essential.

  2. 123. Intervención quirúrgica urgente en paciente varón joven con angiosarcoma primario cardíaco con diagnóstico de tromboembolismo pulmonar agudo

    Directory of Open Access Journals (Sweden)

    N. Miranda

    2012-04-01

    Conclusiones: Son infrecuentes los casos de sarcoma cardíaco primario publicados en la bibliografía y muy pocos los que han cursado como tromboembolismo pulmonar agudo. Este caso ilustra la enorme dificultad que presentan para un diagnóstico y tratamiento precoz que ofrezca unas mínimas expectativas de vida a medio plazo.

  3. Prevalencia y curso clínico de la infección por dengue en adultos mayores con cuadro febril agudo en un hospital de alta complejidad en Cali, Colombia

    Directory of Open Access Journals (Sweden)

    Fernando Rosso

    2016-08-01

    Conclusión. La infección por dengue fue frecuente en adultos mayores como causa de síndrome febril agudo. Una importante proporción requirió hospitalización y presentó complicaciones, sin embargo, el manejo adecuado evitó los casos fatales.

  4. Mixoma de átrio direito associado a cor pulmonale agudo: relato de caso Mixoma de atrio derecho asociado a cor pulmonale agudo: relato de caso Right atrial myxoma associated with acute cor pulmonale: case report

    Directory of Open Access Journals (Sweden)

    Michelle Nacur Lorentz

    2008-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Os mixomas atriais são a forma mais comum de tumor intracardíaco primário. Apesar de serem tumores de comportamento benigno, recomenda-se que sejam retirados tão logo diagnosticados devido à possibilidade de embolização do tumor com suas nefastas conseqüências. O objetivo do presente relato foi apresentar um caso de tumor intracardíaco com localização rara (intra-atrial direito que apresentou embolização intra-operatória de parte do tumor e alertar os anestesiologistas para a possibilidade dessa complicação, além de discutir a conduta anestésica. RELATO DO CASO: Paciente do sexo masculino, 42 anos, portador de grande massa em átrio direito, submetido à retirada do tumor. A indução da anestesia foi feita com etomidato, fentanil e brometo de rocurônio e a manutenção, com isoflurano e fentanil. No intra-operatório o paciente apresentou quadro de cor pulmonale agudo em virtude da embolização de parte do tumor, sendo realizadas medidas de suporte e iniciada rapidamente a circulação extracorpórea. O restante da operação transcorreu bem e o paciente recebeu alta no sétimo dia pós-operatório em boas condições. CONCLUSÕES: Apesar do mixoma intracardíaco ser um tumor de características benignas, ele pode estar associado a complicações graves e às vezes fatais. O conhecimento da doença é importante para que o anestesiologista possa manusear de modo adequado esses pacientes, bem como diagnosticar e tratar as possíveis complicações intra-operatórias.JUSTIFICATIVA Y OBJETIVOS: Los mixomas atriales son la forma más común de tumor intracardiaco primario. A pesar de ser tumores de comportamiento benigno, se recomienda que sean retirados en cuanto sean diagnosticados debido a la posibilidad de embolización del tumor con sus nefastas consecuencias. El objetivo de este relato de caso fue presentar un caso de tumor intracardiaco con localización rara (intra-atrial derecho que present

  5. Por que a letalidade hospitalar do infarto agudo do miocárdio é maior nas mulheres?

    Directory of Open Access Journals (Sweden)

    Passos Luiz Carlos Santana

    1998-01-01

    Full Text Available OBJETIVO: Avaliar a influência da idade, da gravidade da doença e das intervenções terapêuticas na maior letalidade hospitalar do infarto agudo do miocárdio (IAM em mulheres. MÉTODOS: Estudo de coorte retrospectivo, envolvendo 388 pacientes com IAM (50 óbitos. Foram avaliadas, como possíveis explicações para a associação entre sexo e letalidade hospitalar do IAM, as variáveis: idade ( ou = 60 anos, duração de sintomas, classe de Killip, tipo de IAM (com ou sem ondas Q, comorbidades, história de acidente vascular cerebral e intervenções terapêuticas para o IAM (ácido acetil-salicílico, betabloqueadores e agentes trombolíticos. Modelos de regressão logística foram usados para avaliar a influência de potenciais variáveis confundidoras na associação entre sexo e letalidade hospitalar do IAM. RESULTADOS: A letalidade hospitalar do IAM foi mais alta em mulheres (19,5% vs 9,4% do que em homens (odds ratio (OR= 2,34; IC 95%= 1,12-4,47. Embora as mulheres fossem significantemente (p<0,01 mais idosas, a associação entre sexo e morte reduziu-se em apenas 15% após ajuste para idade (OR= 1,99; IC 95 %= 1,07-3,67. Esta associação tornou-se mais fraca ao se considerar a gravidade da doença na admissão (OR= 1,84; IC 95%= 0,90-3,74 e intervenções terapêuticas para o IAM (OR= 1,50; IC= 0,67-3,38. CONCLUSÃO: Diferenças de idade não podem explicar completamente a maior letalidade do IAM em mulheres. A gravidade da doença na admissão e diferenças de abordagem terapêutica devem desempenhar importante papel na maior letalidade hospitalar do IAM em mulheres.

  6. Por que a letalidade hospitalar do infarto agudo do miocárdio é maior nas mulheres?

    Directory of Open Access Journals (Sweden)

    Luiz Carlos Santana Passos

    1998-05-01

    Full Text Available OBJETIVO: Avaliar a influência da idade, da gravidade da doença e das intervenções terapêuticas na maior letalidade hospitalar do infarto agudo do miocárdio (IAM em mulheres. MÉTODOS: Estudo de coorte retrospectivo, envolvendo 388 pacientes com IAM (50 óbitos. Foram avaliadas, como possíveis explicações para a associação entre sexo e letalidade hospitalar do IAM, as variáveis: idade ( ou = 60 anos, duração de sintomas, classe de Killip, tipo de IAM (com ou sem ondas Q, comorbidades, história de acidente vascular cerebral e intervenções terapêuticas para o IAM (ácido acetil-salicílico, betabloqueadores e agentes trombolíticos. Modelos de regressão logística foram usados para avaliar a influência de potenciais variáveis confundidoras na associação entre sexo e letalidade hospitalar do IAM. RESULTADOS: A letalidade hospitalar do IAM foi mais alta em mulheres (19,5% vs 9,4% do que em homens (odds ratio (OR= 2,34; IC 95%= 1,12-4,47. Embora as mulheres fossem significantemente (p<0,01 mais idosas, a associação entre sexo e morte reduziu-se em apenas 15% após ajuste para idade (OR= 1,99; IC 95 %= 1,07-3,67. Esta associação tornou-se mais fraca ao se considerar a gravidade da doença na admissão (OR= 1,84; IC 95%= 0,90-3,74 e intervenções terapêuticas para o IAM (OR= 1,50; IC= 0,67-3,38. CONCLUSÃO: Diferenças de idade não podem explicar completamente a maior letalidade do IAM em mulheres. A gravidade da doença na admissão e diferenças de abordagem terapêutica devem desempenhar importante papel na maior letalidade hospitalar do IAM em mulheres.

  7. Calidad de la atención médica a pacientes con infarto agudo del miocardio. Cienfuegos 2011

    Directory of Open Access Journals (Sweden)

    Hilda María Delgado Acosta

    2013-09-01

    Full Text Available Fundamento: la evaluación constituye una herramienta para mejorar la calidad de la atención a los pacientes. Objetivo: evaluar la calidad de la atención médica a pacientes con infarto agudo de miocardio admitidos en el Hospital General Universitario Dr. Gustavo Aldereguía Lima de Cienfuegos en junio de 2011. Métodos: se realizó una investigación de sistemas y servicios de salud en la que se analizaron como variables: las relacionadas con estructura (recursos humanos y materiales, procesos (cumplimiento de los protocolos establecidos para la atención y resultados (impacto en la mortalidad. Se aplicó un formulario a los 22 pacientes estudiados, se utilizó una guía de observación que evaluó la existencia de recursos humanos y materiales necesarios para la atención en el hospital. Los datos se procesaron en el programa SPSS 15,0 y se expresaron en números absolutos y porcientos. Resultados: en la dimensión estructura no se encontraron carencias de recursos materiales esenciales para la atención, hubo dificultades con la cobertura de enfermería en el Servicio de Cardiología. En la atención prehospitalaria hubo demora en acudir a consulta, dificultades en la prescripción de aspirina y la no realización de trombólisis. En la posthospitalaria se centraron en la rehabilitación y trabajo en la modificación de los factores de riesgo asociados. En el hospital hubo dificultades en la realización de las pruebas ergométricas al alta y en la remisión para la rehabilitación en el Área de Salud. Conclusiones: existen dificultades en la calidad de atención a los pacientes, dificultades que se hacen más evidentes en la Atención Primaria de Salud.

  8. Respuestas de la mujer frente a los síntomas de Síndrome Coronario Agudo basados en el Modelo Conceptual del Manejo de los Síntomas

    Directory of Open Access Journals (Sweden)

    Clara Inés Padilla García

    2014-01-01

    Full Text Available En este artículo se presentan los resultados de la investigación Respuestas de la mujer frente a los síntomas de Síndrome Coronario Agudo basados en el Modelo Conceptual del Manejo de los Síntomas. Es un estudio cuantitativo-descriptivo de corte transversal. Describe las acciones de respuesta de la mujer y el tiempo de dilación para solicitar ayuda ante los síntomas que sugieren Síndrome Coronario Agudo. La investigación incluyó 80 mujeres hospitalizadas en dos instituciones de Bucaramanga (Colombia con diagnóstico de Síndrome Coronario Agudo, durante los meses de octubre del 2011 a abril del 2012. La información se obtuvo utilizando el Instrumento sobre la Experiencia del Síntoma en la Mujer con Síndrome Coronario Agudo y el formato de variables sociodemográficas. Se encontró que el 43.8% de las mujeres demoraron más de seis horas para decidir ir al servicio de urgencias una vez iniciados los síntomas, el 18% ignora los síntomas, el 15% toma remedios caseros, el 21.2% toma agua, el 12.5% respira profundamente, el 35% espera a que pase la sintomatología y el 12.5% llama a una ambulancia. Este estudio promueve la comprensión del fenómeno de respuesta de las mujeres ante los síntomas de Síndrome Coronario Agudo, en cuanto que son el tiempo de demora y las acciones a seguir los factores que influyen sobre la gravedad del síndrome.

  9. Characteristic evolutions in numerical relativity using six angular patches

    International Nuclear Information System (INIS)

    Reisswig, Christian; Bishop, Nigel T; Lai, Chi Wai; Thornburg, Jonathan; Szilagyi, Bela

    2007-01-01

    The characteristic approach to numerical relativity is a useful tool in evolving gravitational systems. In the past this has been implemented using two patches of stereographic angular coordinates. In other applications, a six-patch angular coordinate system has proved effective. Here we investigate the use of a six-patch system in characteristic numerical relativity, by comparing an existing two-patch implementation (using second-order finite differencing throughout) with a new six-patch implementation (using either second- or fourth-order finite differencing for the angular derivatives). We compare these different codes by monitoring the Einstein constraint equations, numerically evaluated independently from the evolution. We find that, compared to the (second-order) two-patch code at equivalent resolutions, the errors of the second-order six-patch code are smaller by a factor of about 2, and the errors of the fourth-order six-patch code are smaller by a factor of nearly 50

  10. Orbital Angular Momentum Multiplexing over Visible Light Communication Systems

    Science.gov (United States)

    Tripathi, Hardik Rameshchandra

    This thesis proposes and explores the possibility of using Orbital Angular Momentum multiplexing in Visible Light Communication system. Orbital Angular Momentum is mainly applied for laser and optical fiber transmissions, while Visible Light Communication is a technology using the light as a carrier for wireless communication. In this research, the study of the state of art and experiments showing some results on multiplexing based on Orbital Angular Momentum over Visible Light Communication system were done. After completion of the initial stage; research work and simulations were performed on spatial multiplexing over Li-Fi channel modeling. Simulation scenarios which allowed to evaluate the Signal-to-Noise Ratio, Received Power Distribution, Intensity and Illuminance were defined and developed.

  11. Nuclear level density variation with angular momentum induced shape transition

    International Nuclear Information System (INIS)

    Aggarwal, Mamta

    2016-01-01

    Variation of Nuclear level density (NLD) with the excitation energy and angular momentum in particular has been a topic of interest in the recent past and there have been continuous efforts in this direction on the theoretical and experimental fronts but a conclusive trend in the variation of nuclear level density parameter with angular momentum has not been achieved so far. A comprehensive investigation of N=68 isotones around the compound nucleus 119 Sb from neutron rich 112 Ru (Z=44) to neutron deficient 127 Pr (Z= 59) nuclei is presented to understand the angular momentum induced variations in inverse level density parameter and the possible influence of deformation and structural transitions on the variations on NLd

  12. Angular trapping of anisometric nano-objects in a fluid.

    Science.gov (United States)

    Celebrano, Michele; Rosman, Christina; Sönnichsen, Carsten; Krishnan, Madhavi

    2012-11-14

    We demonstrate the ability to trap, levitate, and orient single anisometric nanoscale objects with high angular precision in a fluid. An electrostatic fluidic trap confines a spherical object at a spatial location defined by the minimum of the electrostatic system free energy. For an anisometric object and a potential well lacking angular symmetry, the system free energy can further strongly depend on the object's orientation in the trap. Engineering the morphology of the trap thus enables precise spatial and angular confinement of a single levitating nano-object, and the process can be massively parallelized. Since the physics of the trap depends strongly on the surface charge of the object, the method is insensitive to the object's dielectric function. Furthermore, levitation of the assembled objects renders them amenable to individual manipulation using externally applied optical, electrical, or hydrodynamic fields, raising prospects for reconfigurable chip-based nano-object assemblies.

  13. ANGULAR LIGHT-SCATTERING STUDIES ON ISOLATED MITOCHONDRIA

    Science.gov (United States)

    Gotterer, Gerald S.; Thompson, Thomas E.; Lehninger, Albert L.

    1961-01-01

    Angular light-scattering studies have been carried out on suspensions of isolated rat liver mitochondria. The angular scatter pattern has a large forward component, typical of large particles. Changes in dissymmetry and in the intensity of light scattered at 90° have been correlated with changes in optical density during the course of mitochondrial swelling and contraction. Such changes can be measured at mitochondrial concentrations much below those required for optical density measurements. Changes in mitochondrial geometry caused by factors "leaking" from mitochondria, not detectable by optical density measurements, have been demonstrated by measuring changes in dissymmetry. Angular light-scattering measurements therefore offer the advantages of increased sensitivity and of added indices of changes in mitochondrial conformation. PMID:19866589

  14. Angular momentum dependence of the nuclear level density parameter

    Directory of Open Access Journals (Sweden)

    Gohil M.

    2014-03-01

    Full Text Available Neutron evaporation spectra alongwith γ-multiplicity has been measured from the 185Re* compound nucleus at the excitation energies ~27 and 37 MeV. Statistical model analysis of the experimental data has been carried out to extract the value of the inverse level density parameter k at different angular momentum regions (J corresponding to different γ-multiplicity. It is observed that, for the present system the value of k remains almost constant for different J. The present results on the angular momentum dependence of the nuclear level density (NLD parameter ã (=A/k, for nuclei with A ~180 is quite different from our earlier measurements in case of light and medium mass systems. The present analysis provides useful information to understand the angular momentum dependence of NLD at different nuclear mass regions.

  15. Angular Magnetoresistance of Nanowires with Alternating Cobalt and Nickel Segments

    KAUST Repository

    Mohammed, Hanan

    2017-06-22

    Magnetization reversal in segmented Co/Ni nanowires with varying number of segments was studied using angular Magnetoresistance (MR) measurements on isolated nanowires. The MR measurements offer an insight into the pinning of domain walls within the nanowires. Angular MR measurements were performed on nanowires with two and multiple segments by varying the angle between the applied magnetic field and nanowire (−90° ≤θ≤90°). The angular MR measurements reveal that at lower values of θ the switching fields are nearly identical for the multisegmented and two-segmented nanowires, whereas at higher values of θ, a decrease in the switching field is observed in the case of two segmented nanowires. The two segmented nanowires generally exhibit a single domain wall pinning event, whereas an increased number of pinning events are characteristic of the multisegmented nanowires at higher values of θ. In-situ magnetic force microscopy substantiates reversal by domain wall nucleation and propagation in multisegmented nanowires.

  16. Spin and orbital angular momentum distribution functions of the nucleon

    Science.gov (United States)

    Wakamatsu, M.; Watabe, T.

    2000-09-01

    A theoretical prediction is given for the spin and orbital angular momentum distribution functions of the nucleon within the framework of an effective quark model of QCD, i.e., the chiral quark soliton model. An outstanding feature of the model is that it predicts a fairly small quark spin fraction of the nucleon ΔΣ~=0.35, which in turn dictates that the remaining 65% of the nucleon spin is carried by the orbital angular momentum of quarks and antiquarks at the model energy scale of Q2~=0.3 GeV2. This large orbital angular momentum necessarily affects the scenario of scale dependence of the nucleon spin contents in a drastic way.

  17. Angular Momentum Transport in Turbulent Flow between Independently Rotating Cylinders

    International Nuclear Information System (INIS)

    Paoletti, M. S.; Lathrop, D. P.

    2011-01-01

    We present measurements of the angular momentum flux (torque) in Taylor-Couette flow of water between independently rotating cylinders for all regions of the (Ω 1 , Ω 2 ) parameter space at high Reynolds numbers, where Ω 1 (Ω 2 ) is the inner (outer) cylinder angular velocity. We find that the Rossby number Ro=(Ω 1 -Ω 2 )/Ω 2 fully determines the state and torque G as compared to G(Ro=∞)≡G ∞ . The ratio G/G ∞ is a linear function of Ro -1 in four sections of the parameter space. For flows with radially increasing angular momentum, our measured torques greatly exceed those of previous experiments [Ji et al., Nature (London), 444, 343 (2006)], but agree with the analysis of Richard and Zahn [Astron. Astrophys. 347, 734 (1999)].

  18. Microbeam High Angular Resolution Diffraction Applied to Optoelectronic Devices

    International Nuclear Information System (INIS)

    Kazimirov, A.; Bilderback, D. H.; Sirenko, A. A.; Cai, Z.-H.; Lai, B.

    2007-01-01

    Collimating perfect crystal optics in a combination with the X-ray focusing optics has been applied to perform high angular resolution microbeam diffraction and scattering experiments on micron-size optoelectronic devices produced by modern semiconductor technology. At CHESS, we used capillary optics and perfect Si/Ge crystal(s) arrangement to perform X-ray standing waves, high angular-resolution diffraction and high resolution reciprocal space mapping analysis. At the APS, 2ID-D microscope beamline, we employed a phase zone plate producing a beam with the size of 240 nm in the horizontal plane and 350 nm in the vertical (diffraction) plane and a perfect Si (004) analyzer crystal to perform diffraction analysis of selectively grown InGaAsP and InGaAlAs-based waveguides with arc sec angular resolution

  19. Angular momentum non-conserving symmetries in bosonic models

    Energy Technology Data Exchange (ETDEWEB)

    Fortunato, L [ECT, Strada delle Tabarelle 286, I-38123 Villazzano (Trento) (Italy); De Graaf, W A, E-mail: fortunat@pd.infn.it [Dip. Matematica, Universita di Trento, via Sommarive 24, I-38123 Povo, Trento (Italy)

    2011-04-08

    The Levi-Malcev decomposition is applied to bosonic models of quantum mechanics based on unitary Lie algebras u(2), u(2)+u(2), u(3) and u(4) to clearly disentangle semisimple subalgebras. The theory of weighted Dynkin diagrams is then applied to identify conjugacy classes of relevant A{sub 1} subalgebras allowing us to introduce a complete classification of new angular momentum non conserving (AMNC) dynamical symmetries. The tensor analysis of the whole algebra based on the new 'angular momentum' operators reveals unexpected spinors to occur in purely bosonic models. The new chains of subalgebra can be invoked to set up ANMC bases for diagonalization.

  20. Angular momentum non-conserving symmetries in bosonic models

    Science.gov (United States)

    Fortunato, L.; de Graaf, W. A.

    2011-04-01

    The Levi-Malcev decomposition is applied to bosonic models of quantum mechanics based on unitary Lie algebras u(2), u(2)⊕u(2), u(3) and u(4) to clearly disentangle semisimple subalgebras. The theory of weighted Dynkin diagrams is then applied to identify conjugacy classes of relevant A1 subalgebras allowing us to introduce a complete classification of new angular momentum non conserving (AMNC) dynamical symmetries. The tensor analysis of the whole algebra based on the new 'angular momentum' operators reveals unexpected spinors to occur in purely bosonic models. The new chains of subalgebra can be invoked to set up ANMC bases for diagonalization.

  1. Spatial distribution of angular momentum inside the nucleon

    Science.gov (United States)

    Lorcé, Cédric; Mantovani, Luca; Pasquini, Barbara

    2018-01-01

    We discuss in detail the spatial distribution of angular momentum inside the nucleon. We show that the discrepancies between different definitions originate from terms that integrate to zero. Even though these terms can safely be dropped at the integrated level, they have to be taken into account when discussing distributions. Using the scalar diquark model, we illustrate our results and, for the first time, check explicitly that the equivalence between kinetic and canonical orbital angular momentum persists at the level of distributions, as expected in a system without gauge degrees of freedom.

  2. Alignment of angular velocity sensors for a vestibular prosthesis

    Directory of Open Access Journals (Sweden)

    DiGiovanna Jack

    2012-02-01

    Full Text Available Abstract Vestibular prosthetics transmit angular velocities to the nervous system via electrical stimulation. Head-fixed gyroscopes measure angular motion, but the gyroscope coordinate system will not be coincident with the sensory organs the prosthetic replaces. Here we show a simple calibration method to align gyroscope measurements with the anatomical coordinate system. We benchmarked the method with simulated movements and obtain proof-of-concept with one healthy subject. The method was robust to misalignment, required little data, and minimal processing.

  3. On angular distribution of nucleus fission fragments by fast neutrons

    International Nuclear Information System (INIS)

    Barabanov, A.L.; Grechukhin, D.P.

    1987-01-01

    Evaluation of amplitudes of quadrupole and hexadecapole components of angular distribution of nucleus fission fragments by neutrons with the energies E n < or approx. 6 MeV is conducted. Stability of this amplitude to permeability optical coefficient variations for neutrons is revealed. It is shown, that the ratio of these amplitudes as well as the character of their dependence on the target nucleus orientation degree are sensitive to the type of fission probability distribution along K projection if fissile nucleus J spin to the fragment scattering axis. This sensitivity may be used for fragment angular distribution anisotropy formation statistical model verification

  4. Radio source orientation and the angular diameter-redshift relation

    Science.gov (United States)

    Onuora, L. I.

    1991-08-01

    The effect of a nonrandom source orientation on the angular diameter-redshift relation was considered for the 3CR sample of Laing et al., based on the 'unified' scheme of Barthel. For an inhomogeneous sample of objects displaying milliarcsecond scale structure, it was found that there was no evidence for a systematic variation for orientation angle with redshift. However, if it was assumed that quasars are closer to the line of sight than powerful extended radio galaxies, then the observed angular size-redshift relation could be interpreted in terms of source orientation, rather than linear size evolution.

  5. Four Cases of Angular Cheilitis in Orthodontic Patients

    Directory of Open Access Journals (Sweden)

    P Kafaie

    2006-07-01

    Full Text Available Contact dermatitis is an inflammatory reaction of the skin and mucosa to either external or internal factors. It can be divided to two forms of irritant contact dermatitis and allergic contact dermatitis. Nickel is one of the most common materials that causes allergic contact dermatitis and is widely used in orthodontic appliances. The inflammatory reaction to this metal in orthodontics is usually stomatitis and angular cheilitis is very rare. We report 4 cases of angular cheilitis in orthodontic patients and discuss about their causes and treatments.

  6. Estrutura e vínculos de uma família após infarto agudo do miocárdio

    Directory of Open Access Journals (Sweden)

    Raquel Pötter Garcia

    2015-05-01

    Full Text Available Introdução: Conhecer os vínculos e a estrutura de uma família após episódio de Infarto Agudo do Miocárdio. Materiais e Métodos: Pesquisa qualitativa e exploratória que representa um estudo de caso desenvolvido com uma das famílias participantes. A coleta de dados ocorreu no período de fevereiro a maio de 2012, por meio de observação no domicílio e entrevista com construção do genograma e ecomapa. A intensidade dos vínculos foi definida pela família conforme legenda do ecomapa. Resultados e Discussão: Trata-se de uma família que se encontra no estágio de saída dos filhos de casa, cujo pai apresentou infarto. Evidenciaram-se doenças familiares como hipertensão arterial e diabetes mellitus tipo II.  Detectou-se vínculos fortes com os familiares, filhos e vizinha; fracos com o ambulatório de cardiologia e conflituosos com vizinhos. Conclusões: Foi possível conhecer a estrutura e os vínculos de uma família, após um de seus integrantes ter vivenciado o infarto agudo do miocárdio. Dessa maneira, acredita-se que este trabalho pode fornecer subsídios e reflexões para a prática de profissionais que atuam com famílias que vivenciam o infarto em seu contexto. Cómo citar este artículo: Garcia R, Budó ML, Viegas A, Cardoso D, Schwartz E, Muniz R. Estrutura e vínculos de uma família após infarto agudo do miocárdio. Rev Cuid. 2015; 6(1: 991-8.http://dx.doi.org/10.15649/cuidarte.v6i1.142  

  7. Prevalencia, características y valor pronóstico del síndrome metabólico en los síndromes coronarios agudos

    Directory of Open Access Journals (Sweden)

    Alfredo C. Piombo

    2005-01-01

    Full Text Available El síndrome metabólico (SM es una entidad compuesta por diversas alteraciones que confieren un aumento del riesgo cardiovascular y de diabetes a largo plazo. Sus características en pacientes con síndromes coronarios agudos (SCA son prácticamente desconocidas. Objetivos Determinar la prevalencia, las características y el valor pronóstico del síndrome metabólico SM en los síndromes coronarios agudos (SCA. Evaluar su correlación con los factores de riesgo coronario (FRC y los hábitos dietéticos y analizar una nueva definición recientemente propuesta. Material y métodos Se incluyeron pacientes consecutivos ingresados en Unidad Coronaria con infarto agudo de miocardio o angina inestable. Se diagnosticó SM en base a los criterios del NCEP-ATP III. La nueva definición analizada fue la propuesta por la International Diabetes Federation. Resultados Se incluyeron en el estudio 239 pacientes. El SM estuvo presente en el 53,3 % de los casos y fue más frecuente en las mujeres (OR 2,53; IC 95%: 1,24-5,18 (p = 0,005. No presentó correlación significativa con el pronóstico hospitalario ni con los hábitos dietéticos. Su prevalencia según la nueva definición fue casi idéntica (53% y si bien tuvo valor pronóstico en el análisis univariado, no lo conservó en el multivariado. Conclusiones La prevalencia del SM en los SCA es más elevada que la informada para otras poblaciones. No parece tener valor pronóstico a corto plazo. La nueva definición no modificó su prevalencia ni agregó información pronóstica independiente.

  8. Anestesia peridural lombar ou bloqueio do plexo lombar combinados à anestesia geral: eficácia e efeitos hemodinâmicos na artroplastia total do quadril Anestesia epidural lumbar o bloqueo del plexo lumbar combinados con la anestesia general: eficacia y efectos hemodinámicos en la artroplastia total de la cadera Epidural lumbar block or lumbar plexus block combined with general anesthesia: efficacy and hemodynamic effects on total hip arthroplasty

    Directory of Open Access Journals (Sweden)

    Leonardo Teixeira Domingues Duarte

    2009-12-01

    avanzada y de las enfermedades asociadas a los pacientes. El objetivo del estudio, fue evaluar si el bloqueo del plexo lumbar combinado con la anestesia general, equivale a la anestesia epidural lumbar en cuanto a la eficacia del bloqueo nociceptivo, efectos hemodinámicos secundarios, dificultad en su ejecución e influencia en el sangramiento operatorio en pacientes sometidos a la ATC. MÉTODO: Pacientes estado físico ASA I a III que fueron ubicados aleatoriamente en los grupos Epidural y Lumbar. En el grupo Epidural, se realizó la anestesia epidural lumbar continua con la ropivacaína a 0,5% 10 a 15 mL. En el grupo Lumbar, fue realizado el bloqueo del plexo lumbar por la vía posterior con ropivacaína a 0,5% 0,4 mL.kg-1. Todos los pacientes fueron sometidos a la anestesia general. Se estudiaron: la dificultad en la ejecución de los bloqueos, su eficacia y los efectos hemodinámicos secundarios. RESULTADOS: Cuarenta y un pacientes fueron incluidos en el estudio. El tiempo para la ejecución del bloqueo epidural fue menor, pero el número de intentos en colocar la aguja fue similar en los dos grupos. El bloqueo epidural fue más eficaz. En el grupo Lumbar, se registró un aumento de la presión arterial diastólica y media (PAM y en el doble producto. Después de la incisión, el consumo anestésico durante la operación fue mayor. Posteriormente al bloqueo, la PAM fue menor en los 50, 60 y 70 minutos después de la realización del bloqueo epidural. El sangramiento fue parecido en los dos grupos. CONCLUSIONES: La técnica epidural promovió un bloqueo nociceptivo más eficaz sin asociarse a la inestabilidad hemodinámica, cuando se le combinó con la anestesia general. El bloqueo del plexo lumbar fue una técnica útil en combinación con la anestesia general cuando la anestesia epidural estuvo contraindicada.BACKGROUND AND OBJECTIVES: Anesthesia for total hip arthroplasty (THA is a challenge due to the advanced age and associated diseases of patients. The objective

  9. Perfil etiológico del síndrome febril icterohemorrágico agudo y síndrome febril ictérico agudo en los valles del Apurímac, Quillabamba, Chanchamayo y Alto Huallaga, Perú, 1999-2000.

    Directory of Open Access Journals (Sweden)

    2003-07-01

    Full Text Available Objetivos: Conocer el perfil etiológico del síndrome febril hemorrágico agudo (SFHA y del síndrome febril ictérico agudo (SFIA en los valles del Río Apurímac (Ayacucho, Quillabamba (Cusco, Chanchamayo (Junín y Alto Huallaga (Huánuco. Materiales y métodos: Estudio longitudinal descriptivo realizado entre junio de 1999 y mayo de 2000, en 146 establecimientos de salud de los cuatro valles involucrados. Fueron incluidos pacientes que cumplieron con las definiciones de caso para la vigilancia del síndrome febril hemorrágico agudo y el síndrome febril ictérico agudo. Las muestras obtenidas se procesaron por ELISA IgM de captura para fiebre amarilla; IgM anti-HBc ELISA y HBsAg ELISA para hepatitis B; Ig anti-VHD ELISA para hepatitis D; e IgM ELISA para leptospirosis. Resultados: Fueron incluidos 63 casos: 98,4% con SFIA y 1,6% con SFHA. La letalidad fue de 16% y el tiempo entre inicio de síntomas y la obtención de la muestra de 7,2 ±5,1 días. Los casos que tuvieron confirmación diagnóstica fueron 31 (49,2%, hepatitis B (23,8%, hepatitis D (15,6%, fiebre amarilla (4,8% y leptospirosis (4,8%. Cusco tuvo el mayor porcentaje de casos confirmados por laboratorio, siendo la mayoría hepatitis B y D. Conclusiones: El estudio de la etiología de SFIA y SFHA ha permitido identificar tres brotes de fiebre amarilla en Cusco, Junín y Huánuco, y conocer la importancia de la hepatitis B, D y leptospirosis en el diagnóstico diferencial de estos síndromes. Si bien las definiciones usadas apuntan a detectar enfermedades severas, la vigilancia de ambos síndromes es complementaria y totalmente compatible con los sistemas de enfermedad específica y por el laboratorio.

  10. Bloqueo neurolítico del tercer ganglio simpático dorsal en pacientes con síndrome de Raynaud: Una serie de casos Neurolytic blocking third dorsal simpathetic ganglion in patients with Raynaud´s syndrome: A number of cases

    OpenAIRE

    J. A. Flores Cantisani; M. G. Hinojosa Reyes; G. C. Palacios Saucedo; M. L. Prieto Duarte; O. Becerra Alcántara

    2013-01-01

    Introducción: El fenómeno de Raynaud es un trastorno vascular, frecuente en la población general, que consiste en la aparición paroxística de espasmo vascular distal, en pequeñas arterias y arteriolas cutáneas de las extremidades, con escasa repercusión sistémica. Existen bases anatómicas y fisiológicas para producir un bloqueo simpático selectivo utilizando agentes neurolíticos en los ganglios torácicos T2 y T3, considerados estaciones sinápticas que se distribuyen en el miembro superior. Ob...

  11. O Bloqueio do plexo hipogástrico superior é eficaz no tratamento de dor pélvica crônica? ¿El bloqueo del plexo hipogástrico superior es eficaz en el tratamiento del dolor pélvico crónico? Is superior hypogastric plexus block effective for treatment of chronic pelvic pain?

    Directory of Open Access Journals (Sweden)

    André P Schmidt

    2005-12-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: O bloqueio do plexo hipogástrico tem sido apresentado como uma alternativa segura e eficaz no tratamento de pacientes portadores de dor pélvica crônica. Os estudos publicados e disponíveis no MedLine, abordando este tema, foram incluídos e analisados nesta revisão. CONTEÚDO: Alguns estudos documentaram a eficácia do bloqueio do plexo hipogástrico superior em reduzir a intensidade da dor e o consumo de opióides, principalmente em pacientes com câncer. No entanto, os estudos apresentam falhas em seus métodos ou desenhos. CONCLUSÕES: Novos estudos prospectivos melhor conduzidos ainda são necessários para ratificar a efetividade do bloqueio do plexo hipogástrico no alívio de condições dolorosas pélvicas. Esses estudos devem possuir critérios de inclusão mais rigorosos, seguimento mais prolongado, avaliação de outros sintomas e da qualidade de vida antes e após o procedimento. O bloqueio do plexo hipogástrico superior deve ser recomendado como uma alternativa e não como terapêutica principal.JUSTIFICATIVA Y OBJETIVOS: El bloqueo del plexo hipogástrico ha sido presentado como una alternativa segura y eficaz en el tratamiento de pacientes portadores de dolor pélvico crónico. Los estudios publicados y disponibles en el MedLine, abordando este tema, fueron incluidos y analizados en esta revisión. CONTENIDO: Algunos estudios documentaron la eficacia del bloqueo del plexo hipogástrico superior en reducir la intensidad del dolor y el consumo de opioides, principalmente en pacientes con cáncer. Sin embargo, los estudios presentan fallas en sus métodos o dibujos. CONCLUSIONES: Aún son necesarios nuevos estudios prospectivos y mejor conducidos, para poder ratificar la efectividad del bloqueo del plexo hipogástrico en el alivio de condiciones dolorosas pélvicas. Esos estudios deben poseer criterios de inclusión más rigurosos, seguimiento más prolongado, evaluación de otros síntomas y de la

  12. Eficacia anestésica y duración analgésica de la bupivacaína al 0.25% + morfina vs bupivacaína al 0.25% en bloqueo del plexo braquial para cirugía de miembro superior en pacientes del Hospital Vicente Corral Moscoso, Cuenca 2014

    OpenAIRE

    Espinoza Bernal, Flora Judith

    2016-01-01

    Introducción: La cirugía de miembro superior es un reto para el anestesiólogo por que amerita el dominio de técnicas de anestesia regional y manejo de complicaciones y analgesia en las primeras 48 horas. Objetivo: Comparar la eficacia anestésica entre bupivacaína al 0.25% + morfina y bupivacaína al 0.25% en bloqueo del plexo braquial para cirugía de miembro superior en el H.V.C.M, Cuenca 2014. Metodología: se diseñó un estudio clínico aleatorio simple ciego, para valorar el efecto de la...

  13. Correlación clínica, laparoscópica e histológica en el abdomen agudo

    Directory of Open Access Journals (Sweden)

    María Elena Trujillo Toledo

    1995-12-01

    Full Text Available Se presentan 132 pacientes con diagnóstico clínico de abdomen agudo durante 1991 a 1993, a quienes se les realizó laparoscopia de urgencia. Las afecciones más frecuentes en que se realizó laparoscopia fueron: apendicitis aguda y las enfermedades ginecológicas. La efectividad de la laparoscopia en relación con el resultado histológico fue del 97,1 %, y no coincidió en 3 pacientes con diagnóstico laparoscópico de apendicitis aguda, hematosalpinx derecho y peritonitis pélvica, sin especificar factor causal. En el 19,6 % la conclusión laparoscópica evitó una intervención quirúrgica

  14. Neumonía eosinofílica: presentación de dos casos, agudo y crónico

    Directory of Open Access Journals (Sweden)

    Oscar Pamo Reyna

    2007-01-01

    Full Text Available Se presenta dos casos de neumonía eosinofílica idiopática, uno crónico y otro agudo. En el caso clínico 1 se realizó una confirmación anatomopatológica de neumonía eosinofílica idiopática y en el caso clínico 2 se tuvo una neumonia eosinofílica aguda probable. Ambos presentaron tos, fiebre y disnea. El estudio radiográfico reveló lesiones alveolares bilaterales con tendencia a la consolidación. La marcada eosinofilia en sangre periférica fue un dato resaltante que facilitó el diagnóstico. Ambos casos tuvieron muy buena respuesta a la corticoterapia.(Rev Med Hered 2007;18:39-44.

  15. Revisión sobre el uso del mate de hoja de coca en la prevención del mal agudo de montaña.

    OpenAIRE

    Salinas-Piélago, Joel

    2016-01-01

    El número de turistas que viajan a zonas de gran altitud en países andinos se está incrementando en los últimos años, con aumento concomitante del riesgo de desarrollar el mal agudo de montaña. En las zonas alto andinas el mate de hoja de coca es usado frecuentemente para la prevención de este problema, pero las evidencias no soportan esta medida; se estima que, por el contrario, podría incrementar los síntomas delcuadro clínico que se intenta controlar por lo que se sugiere la conveniencia d...

  16. CARACTERIZACIÓN DEL SÍNDROME CORONARIO AGUDO SIN ELEVACIÓN DEL ST EN EL CENTRO DIAGNÓSTICO INTEGRAL

    Directory of Open Access Journals (Sweden)

    Rider Piñeiro López

    2012-03-01

    Full Text Available Resumen Introducción y objetivos: El síndrome coronario agudo presenta una elevada incidencia en el cuadro de morbilidad y mortalidad de los países del mundo desarrollado. El objetivo de esta investigación fue determinar la morbilidad por síndrome coronario agudo y su relación con algunas variables. Método: Se realizó un estudio epidemiológico, observacional, descriptivo, en 30 pacientes con el diagnóstico de síndrome coronario agudo sin elevación del ST, atendidos en la Unidad de Terapia Intensiva del Centro Diagnóstico Integral “José Gregorio Hernández”, municipio Ortiz, estado Guárico, República Bolivariana de Venezuela; en el período del 1 de enero al 31 de diciembre de 2007. Resultados: La angina inestable fue la enfermedad más frecuente (80,0 % en estos pacientes. Predominaron los mayores de 49 años (80 %, del sexo femenino (63,3 %, color negro de piel, procedencia urbana y escolaridad secundaria. El tabaquismo constituyó el factor de riesgo más frecuente (56,6 %, seguido de hipertensión arterial (43,3 % y obesidad (26,6 %. Las arritmias y el fallo de bomba fueron frecuentes en pacientes con infarto; el dolor precordial mantenido, en enfermos con angina inestable. Hubo un fallecido por infarto agudo de miocardio, con más de sesenta años y menos de tres días de estadía. Conclusiones: Predominó la angina inestable, y los factores de riesgo más frecuentemente asociados, fueron la hipertensión arterial y el hábito de fumar. Abstract Introduction and objectives: Acute coronary syndrome has a high impact on morbidity and mortality rates of the developed world. The objective of this research was to determine the morbidity for acute coronary syndrome and its relation to some variables. Method: An epidemiological, observational, descriptive study was performed in 30 patients with the diagnosis of acute coronary syndrome without ST elevation, treated at the Intensive Care Unit of the Integral Diagnostic Center "Jos

  17. Uso de alteplase no tratamento do acidente vascular encefálico isquêmico agudo: o que sabem os enfermeiros?

    Directory of Open Access Journals (Sweden)

    Samia Jardelle Costa de Freitas Maniva

    2012-06-01

    Full Text Available O estudo objetivou analisar o conhecimento de enfermeiros acerca do uso de alteplase no tratamento do acidente vascular encefálico (AVE isquêmico agudo. Estudo descritivo-exploratório realizado em uma unidade de AVE de um hospital público localizado na cidade de Fortaleza-CE, durante o mês de outubro de 2010. Participaram do estudo dez enfermeiros, com idade média de 25 anos. Os benefícios da medicação foram apresentados em justaposição com as limitações do uso. Estratégias para ampliar a utilização de alteplase foram apontadas pelos enfermeiros. O conhecimento da realidade investigada contribui na construção do saber de enfermagem e pode auxiliar o enfermeiro que presta assistência direta ao paciente que se submete a este tratamento.

  18. Nuevo modelo de doble antiagregación y anticoagulación en infarto agudo de miocardio sometido a intervencionismo coronario percutáneo primario

    OpenAIRE

    Zafra Cobo, Francisco Manuel

    2015-01-01

    1. JUSTIFICACIÓN E HIPÓTESIS En el momento actual el tratamiento óptimo del infarto agudo de miocardio con elevación del segmento ST (IAMEST) es la terapia de reperfusión mediante intervencionismo coronario percutáneo primario (ICPp). El empleo de bivalirudina en ICPp ha demostrado una reducción en el número de eventos clínicos y de sangrado en comparación con el tratamiento estándar de heparina no fraccionada (HNF) más un inhibidor de la glicoproteína IIb/IIIa (GP IIb/IIIa). A pesar de es...

  19. Infarto agudo de miocardio en mujeres: características clínicas y evolución a corto y a largo plazo

    Directory of Open Access Journals (Sweden)

    Pablo Liva

    2008-01-01

    Full Text Available IntroducciónEn América latina se conoce poco acerca de las diferencias entre varones y mujeres con síndrome coronario agudo. La hipótesis del presente trabajo es que el sexo presenta diferente riesgo cardiovascular en el infarto agudo de miocardio.ObjetivosComparar características clínicas y pronóstico a corto y a largo plazo en mujeres (grupo I y en varones (grupo II con infarto agudo de miocardio (IAM.Material y métodosDesde enero de 2001 hasta diciembre de 2004 se admitieron en forma prospectiva y consecutiva 536 pacientes con IAM dentro de las 24 horas de evolución. De ellos, 144 (26,9% eran mujeres (grupo I.ResultadosLa mediana de edad del grupo I fue mayor (66 [rango intercuartil 25-75: 56-75] versus 60 [rango intercuartil 25-75: 52-68] años; p < 0,001. Las mujeres fumaban menos (25% versus 46,7%; p < 0,001, tenían menos infarto previo (18,1% versus 25,3%; p = 0,008 y más angina crónica estable (20,8% versus 12%; p = 0,01. Al ingreso, las mujeres estaban más taquicárdicas (80 versus 76 lat/min; p = 0,01, con mayor nivel de urea (0,48 versus 0,36 g/L; p = 0,003 y similar Fey (50% versus 51%; p = 0,27. Tuvieron peor evolución hospitalaria: muerte (9,7% versus 4,8%; p = 0,037, angina refractaria (9,7% versus 4,2%; p = 0,039 y edema agudo de pulmón (12,5% versus 5,4%; p = 0,005. Las estrategias de reperfusión en ambos grupos fueron: trombolíticos (21,4% versus 20,3%; p = ns y angioplastia primaria (18,1% versus 21,8%; p = ns. La supervivencia a los 54 meses fue del 77% versus el 85% en los grupos I y II, respectivamente (log rank test: p = 0,032. El sexo fue una variable significativa en el análisis univariado (OR = 1,71; p = 0,035. En el modelo proporcional de Cox, las variables significativas de mortalidad fueron edad (HR = 1,033; p = 0,006 y, al ingreso, urea (HR = 4,275; p < 0,001, frecuencia cardíaca (HR = 1,018; p = 0,004 y Killip (HR = 2,771; p = 0,01.ConclusionesLas mujeres admitidas por IAM tienen un perfil de

  20. Angioplastia coronaria vs terapia trombolítica en infarto agudo de miocardio. Clínica Marshfield-Hospital St Joseph, Wisconsin, EE.UU, 1999

    Directory of Open Access Journals (Sweden)

    Juan Pulido

    2001-04-01

    Full Text Available El tratamiento del infarto agudo de miocardio (IAM está en
    investigación por sus implicaciones en la práctica médica y por la
    comprensión más detallada de la fisiopatología. El objetivo del estudio es comparar clínica y angiográficamente la angioplastia coronaria con la trombolisis aguda en pacientes con IAM de menos de 24 horas de evolución. La administración de agentes trombolíticos después de una oclusión coronaria aguda ha disminuido la mortalidad intrahospitalaria, el tamaño del infarto y el número de complicaciones asociadas.

  1. Factors Related to In-Hospital Mortality Caused by Acute Myocardial Infarction Factores relacionados con la mortalidad intrahospitalaria en el infarto agudo del miocardio

    Directory of Open Access Journals (Sweden)

    Francisco Valladares Carvajal

    2012-11-01

    Full Text Available Background: the identification of factors related to mortality in acute myocardial infarction represents an essential element in the initial assessment of patients. Objective: to identify factors associated with in-hospital mortality in patients with acute myocardial infarction admitted to the Coronary Intensive Care Unit of Cienfuegos in 2010. Methods: we conducted a case series study, which included 241 patients with acute myocardial infarction admitted to the Coronary Intensive Care Unit of the Dr. Gustavo Aldereguía Lima General University Hospital of Cienfuegos in 2010. The variables analyzed were age, sex, personal medical history, type of acute myocardial infarction (according to electrocardiogram and topographic location, heart rate and blood pressure at admission, classification of heart failure according to Killip Kimball, creatinine, glucose, total cholesterol, triglycerides, CPK-MB, and cardiovascular adverse events during their hospital stay. Results: the average age of the patients was 65,6 years old, with male predominance. High blood pressure, smoking and previous myocardial infarction were the most relevant antecedents. Patients with no heart failure and preserved ejection fraction predominated. Most frequent cardiovascular adverse events were post-infarction angina, ventricular arrhythmias and cardiogenic shock. Conclusions: we found significant association with mortality and old age (> 70 years, tachycardia, blood glucose ≥ 7 mmol / l at admission, and the presentation of ventricular arrhythmias and cardiogenic shock during in-hospital evolution.Fundamento: la identificación de los factores relacionados con la mortalidad en el infarto agudo del miocardio representa un eslabón primordial en la evaluación inicial de los pacientes. Objetivo: identificar los factores relacionados con la mortalidad intrahospitalaria de los pacientes con infarto agudo del miocardio, ingresados en la Unidad de Cuidados Intensivos Coronarios de

  2. Efeito agudo de exercícios de alongamento estático e dinâmico na impulsão vertical de jogadores de futebol

    OpenAIRE

    Vinicius de Souza Ferreira; Bruno Colombo Muller; Abdallah Achour Junior

    2013-01-01

    O objetivo deste estudo foi comparar o efeito agudo dos exercícios de alongamento estático e do alongamento dinâmico na impulsão vertical e amplitude do movimento de 22 jogadores de futebol profissional do sexo masculino. Observou-se que após a intervenção do alongamento dinâmico, o grupo experimental (n=13) apresentou um aumento significativo na impulsão vertical (p=0,002), enquanto que após o alongamento estático, não houve alteração significativa (p=0,343), assim como na condição sem along...

  3. Genetic characterization of angular leaf spot resistance in selected ...

    African Journals Online (AJOL)

    Mr Tryphone

    2015-10-28

    Oct 28, 2015 ... Angular leaf spot disease (ALS) caused by Pseudocercospora griseola is one of the most important bean diseases in Tanzania. The bean landraces Beti-10, Nanka, Nanavala and Nkanamna used in this study have been identified as resistant to ALS but the nature of inheritance and mechanisms of.

  4. Incorporation of resistance to angular leaf spot and bean common ...

    African Journals Online (AJOL)

    Angular leaf spot (ALS) caused by the fungus Pseudocercospora griseola and Bean common mosaic and necrosis virus (BCMV/BCMNV) are important diseases of common bean in Tanzania that can cause severe yield reduction when uncontrolled. This study was conducted to incorporate resistant genes for ALS and ...

  5. Incorporation of resistance to angular leaf spot and bean common ...

    African Journals Online (AJOL)

    Luseko

    2013-07-03

    Jul 3, 2013 ... Angular leaf spot (ALS) caused by the fungus Pseudocercospora griseola and Bean common mosaic and necrosis virus (BCMV/BCMNV) are important diseases of common bean in Tanzania that can cause severe yield reduction when uncontrolled. This study was conducted to incorporate resistant genes ...

  6. Angular dispersion of protons transmitted through thin gold films

    International Nuclear Information System (INIS)

    Archubi, C.; Eckardt, J.C.; Lantschner, G.H.; Lovey, F.; Arista, N.R.; Denton, C.; Parra, C.; Valdes, J.; Zappa, F.

    2004-01-01

    The angular distributions of protons travelling through thin polycrystalline gold targets (∝15 nm) with incident energies in the range of 4-10 keV have been measured. The results confirm previous experiments at higher energies showing deviations from theoretical predictions based on the standard multiple scattering theory. In order to prove that the effect of crystal structure is one of the main causes of these deviations we have performed numerical simulations. To simulate the polycrystalline structure in a realistic way, we have made an analysis of the target by means of transmission electron microscopy (TEM) techniques. Including these characteristics in the simulation, together with the effect of vibrations and crystal disorder we analyzed the corresponding angular distribution. To evaluate the role of channeling, we also measured angular distributions of protons in a left angle 100 right angle gold foil and made the corresponding numerical simulations. The results show the critical influence of the target structure in the angular spectra of transmitted ions. (copyright 2004 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  7. Numerical simulation of side heating for controlling angular ...

    Indian Academy of Sciences (India)

    However, it induces various types of distortions like angular, transverse, longitudinal, etc. Distor- tions induced ... strains and residual stress owing to the mismatch of thermal expansions in the weld and sur- rounding ... approaches, on the other hand, aim to minimize the residual stress during the welding process for given ...

  8. The phenomenon of nucleon emission at high angular momentum ...

    Indian Academy of Sciences (India)

    Since the drop in the separation energy is closely associated with the structural changes in the rotating nuclei, relative increase in neutron emission probability around certain values of angular momentum may be construed as evidence for the shape transition. A similar effect is predicted for 168Yb around ≈ 55ħ. We also ...

  9. Strong eld ionization of naphthalene: angular shifts and molecular potential

    DEFF Research Database (Denmark)

    Dimitrovski, Darko; Maurer, Jochen; Christensen, Lauge

    We analyze the photoelectron momentum distributions from strong eld ionization of xed-in-space naphthalene molecules by circularly polarized laser pulses. By direct comparison between experiment and theory, we show that the angular shifts in the photoelectron momentum distributions are very...

  10. Classical Angular Momentum of Light: A Paradox and its Resolution

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 8; Issue 10. Classical Angular Momentum of Light: A Paradox and its Resolution. K Vijay Kumar N Kumar. Classroom Volume 8 Issue 10 October 2003 pp 69-75. Fulltext. Click here to view fulltext PDF. Permanent link:

  11. Correlated angular distributions in τ+τ- semileptonic decays

    International Nuclear Information System (INIS)

    Dova, M.T.; Epele, L.N.; Fanchiotti, H.; Garcia Canal, C.A.; Lacentre, P.E.

    1995-01-01

    The spin correlated angular distribution for τ - τ + pairs at energies of the Z 0 resonance, both decaying semi-leptonically up to 3 hadrons in each final state, was derived assuming general vector and axial vector couplings. The use of these distributions to test the V - A structure of the τ-W-ν τ vertex at LEP energies is analized. (orig.)

  12. Numerical simulation of side heating for controlling angular ...

    Indian Academy of Sciences (India)

    In the present study, a 3-D coupled transient thermal analysis model with auxiliary side heating (parallel heating) is developed to control angular distortion. During analysis, parallel heating flames are placed at several locations from weld line in cross direction. A user defined subroutine is used to apply transient heat source ...

  13. Equal channel angular pressing of pure aluminium—an analysis

    Indian Academy of Sciences (India)

    Equal channel angular pressing (ECAP) is a novel technique for producing ultra fine grain structures in submicron level by introducing a large amount of shear strain into the materials without changing the billet shape or dimensions. This process is well suited for aluminium alloys and is capable of producing ultra fine grain ...

  14. Variation in aggressiveness of Phaeoisariopsis griseola and angular ...

    African Journals Online (AJOL)

    Aggressiveness of fifteen isolates of Phaeoisariopsis griseola and variations in angular leaf spot symptom development in common bean were studied. The isolates were selected based on their virulence and genetic differences and represented Andean, Afro-Andean and Mesoamerican groups of P. griseola.

  15. Angular distribution of photoelectrons from atomic oxygen, nitrogen, and carbon

    Science.gov (United States)

    Manson, S. T.; Kennedy, D. J.; Starace, A. F.; Dill, D.

    1974-01-01

    The angular distribution of photoelectrons from atomic oxygen is investigated using Hartree-Fock (HF) wave functions. The correct formulation is used to compare HS and HF results. Agreement between these results is good and the HS calculations have been extended to atomic nitrogen and carbon as well.

  16. Angular anisotropy of the cosmic microwave background radiation

    International Nuclear Information System (INIS)

    Silk, J.

    1982-01-01

    The theory of fluctuations in the cosmic microwave background radiation is reviewed. Anisotropy on large-scale (dipole and quadrupole) and on small scales is discussed. The smoothing effects of secondary ionization (fractional ionization x) are found to be unimportant over an angular scale greater than approx.= 5(OMEGAx)sup(1/3) degrees. (author)

  17. Holographic toolkit for optical communication beyond orbital angular momentum

    CSIR Research Space (South Africa)

    Rosales-Guzman, C

    2016-09-01

    Full Text Available , suggested over 30 years ago, comprises the use of spatial modes of light as information carriers. Along this direction, light beams endowed with orbital angular momentum (OAM) have been demonstrated as potential information carriers in both, free space...

  18. Cosmology Large Angular Scale Surveyor (CLASS) Focal Plane Development

    Science.gov (United States)

    Chuss, D. T.; Ali, A.; Amiri, M.; Appel, J.; Bennett, C. L.; Colazo, F.; Denis, K. L.; Dünner, R.; Essinger-Hileman, T.; Eimer, J.; Fluxa, P.; Gothe, D.; Halpern, M.; Harrington, K.; Hilton, G.; Hinshaw, G.; Hubmayr, J.; Iuliano, J.; Marriage, T. A.; Miller, N.; Moseley, S. H.; Mumby, G.; Petroff, M.; Reintsema, C.; Rostem, K.; U-Yen, K.; Watts, D.; Wagner, E.; Wollack, E. J.; Xu, Z.; Zeng, L.

    2016-08-01

    The Cosmology Large Angular Scale Surveyor (CLASS) will measure the polarization of the Cosmic Microwave Background to search for and characterize the polarized signature of inflation. CLASS will operate from the Atacama Desert and observe ˜ 70 % of the sky. A variable-delay polarization modulator provides modulation of the polarization at ˜ 10 Hz to suppress the 1/ f noise of the atmosphere and enable the measurement of the large angular scale polarization modes. The measurement of the inflationary signal across angular scales that spans both the recombination and reionization features allows a test of the predicted shape of the polarized angular power spectra in addition to a measurement of the energy scale of inflation. CLASS is an array of telescopes covering frequencies of 38, 93, 148, and 217 GHz. These frequencies straddle the foreground minimum and thus allow the extraction of foregrounds from the primordial signal. Each focal plane contains feedhorn-coupled transition-edge sensors that simultaneously detect two orthogonal linear polarizations. The use of single-crystal silicon as the dielectric for the on-chip transmission lines enables both high efficiency and uniformity in fabrication. Integrated band definition has been implemented that both controls the bandpass of the single-mode transmission on the chip and prevents stray light from coupling to the detectors.

  19. Gravitational Field of Ultrarelativistic Objects with Angular Momentum

    International Nuclear Information System (INIS)

    Fursaev, Dmitri V

    2006-01-01

    A brief review of recently found gyraton metrics which describe the gravitational field of objects having an angular momentum and moving with the velocity of light is given. The gyraton metrics belong to a class of exact plane wave solutions of four and higher dimensional Einstein equations in vacuum or in the presence of a negative cosmological constant

  20. Search for new physics in dijet mass and angular distributions

    Indian Academy of Sciences (India)

    We present a search for physics beyond the Standard Model in proton–proton collisions at a centre-of-mass energy of s = 7 TeV, performed with the ATLAS detector at the Large Hadron Collider (LHC). No evidence for new physics is found in dijet mass and angular distributions and stringent limits are set on a variety of ...

  1. Angular distributions and total yield of laser ablated silver

    DEFF Research Database (Denmark)

    Svendsen, Winnie Edith; Nordskov, A.; Schou, Jørgen

    1997-01-01

    The angular distribution of laser ablated silver has been measured in situ with a newly constructed setup with an array of microbalances. The distribution is strongly peaked in the forward direction corresponding to cospθ, where p varies between 5 and 9 for laser fluences from 2 to 7 J/cm2 at 355...

  2. Generation of ultraviolet radiation with wide angular tolerance in ...

    Indian Academy of Sciences (India)

    Tangential phase-matching has been realised in cesium lithium borate (CLBO) crystal for the first time for the generation of fourth harmonic (266 nm) of Nd:YAG and third harmonic (226.7 nm) of a dye laser radiation by second harmonic generation and sum-frequency mixing with the angular tolerance as large as 22 mrad ...

  3. Quantitatively measuring the orbital angular momentum density of light : Presentation

    CSIR Research Space (South Africa)

    Dudley, Angela L

    2013-08-01

    Full Text Available Although many techniques are efficient at measuring optical orbital angular momentum (OAM), they do not allow one to obtain a quantitative measurement for the OAM density across an optical field and instead only measure its global OAM. Numerous...

  4. Exact angular momentum projection based on cranked HFB solution

    Energy Technology Data Exchange (ETDEWEB)

    Enami, Kenichi; Tanabe, Kosai; Yosinaga, Naotaka [Saitama Univ., Urawa (Japan). Dept. of Physics

    1998-03-01

    Exact angular momentum projection of cranked HFB solutions is carried out. It is reconfirmed from this calculation that cranked HFB solutions reproduce the intrinsic structure of deformed nucleus. The result also indicates that the energy correction from projection is important for further investigation of nuclear structure. (author)

  5. Angular momentum projection of tilted axis rotating states

    Energy Technology Data Exchange (ETDEWEB)

    Oi, M.; Onishi, N.; Tajima, N. [Tokyo Univ. (Japan); Horibata, T.

    1998-03-01

    We applied an exact angular momentum projection to three dimensional cranked HFB (3d-CHFB) states. Tilted axis rotating states (TAR) and principal axis rotating states (PAR) are compared. It is shown that TAR is more adequate than PAR for description of the back bending phenomena driven by tilted rotation or wobbling motion. (author)

  6. Generation of ultraviolet radiation with wide angular tolerance in ...

    Indian Academy of Sciences (India)

    Home; Journals; Pramana – Journal of Physics; Volume 55; Issue 3 ... Non-linear optics; ultraviolet radiation; tangential phase-matching; Sellmeier dispersion ... of Nd:YAG and third harmonic (226.7 nm) of a dye laser radiation by second harmonic generation and sum-frequency mixing with the angular tolerance as large as ...

  7. The vorticity and angular momentum budgets of Asian summer ...

    Indian Academy of Sciences (India)

    The study delineates the vorticity and angular momentum balances of Asian summer monsoon during the evolution and established phases. It also elucidates the differences between these balances in the National Centre for Environmental Prediction/National Centre for Atmospheric Research (NCEP/NCAR) reanalysis ...

  8. Angular dose dependence of Matrixx TM and its calibration.

    Science.gov (United States)

    Wolfsberger, Luciant D; Wagar, Matthew; Nitsch, Paige; Bhagwat, Mandar S; Zygmanski, Piotr

    2010-01-28

    One of the applications of MatriXX (IBA Dosimetry) is experimental verification of dose for IMRT, VMAT, and tomotherapy. For cumulative plan verification, dose is delivered for all the treatment gantry angles to a stationary detector. Experimental calibration of MatriXX detector recommended by the manufacturer involves only AP calibration fields and does not address angular dependency of MatriXX. Angular dependency may introduce dose bias in cumulative plan verification if not corrected. For this reason, we characterized angular dependency of MatriXX and developed a method for its calibration. We found relatively large discrepancies in responses to posterior vs. anterior fields for four MatriXX (Evolution series) detectors (up to 11%), and relatively large variability of responses as a function of gantry angle in the gantry angle ranges of 91 degrees-110 degrees and 269 degrees-260 degrees. With our calibration method, the bias due to angular dependency is effectively removed in experimental verification of IMRT and VMAT plans.

  9. The angular ordering in soft-gluon emission

    International Nuclear Information System (INIS)

    Tesima, K.

    1987-01-01

    The way to evaluate multi-parton cross-sections systematically is discussed. In the leading-double-log approximation in QCD, the successive emission of soft gluons is at successively smaller angles. The angular ordering, however, is violated in the next-to-leading order

  10. Cosmology Large Angular Scale Surveyor (CLASS) Focal Plane Development

    Science.gov (United States)

    Chuss, D. T.; Ali, A.; Amiri, M.; Appel, J.; Bennett, C. L.; Colazo, F.; Denis, K. L.; Dunner, R.; Essinger-Hileman, T.; Eimer, J.; hide

    2015-01-01

    The Cosmology Large Angular Scale Surveyor (CLASS) will measure the polarization of the Cosmic Microwave Background to search for and characterize the polarized signature of inflation. CLASS will operate from the Atacama Desert and observe approx.70% of the sky. A variable-delay polarization modulator provides modulation of the polarization at approx.10Hz to suppress the 1/f noise of the atmosphere and enable the measurement of the large angular scale polarization modes. The measurement of the inflationary signal across angular scales that spans both the recombination and reionization features allows a test of the predicted shape of the polarized angular power spectra in addition to a measurement of the energy scale of inflation. CLASS is an array of telescopes covering frequencies of 38, 93, 148, and 217 GHz. These frequencies straddle the foreground minimum and thus allow the extraction of foregrounds from the primordial signal. Each focal plane contains feedhorn-coupled transition-edge sensors that simultaneously detect two orthogonal linear polarizations. The use of single-crystal silicon as the dielectric for the on-chip transmission lines enables both high efficiency and uniformity in fabrication. Integrated band definition has been implemented that both controls the bandpass of the single-mode transmission on the chip and prevents stray light from coupling to the detectors.

  11. Synchronization of colloidal rotors through angular optical binding

    Czech Academy of Sciences Publication Activity Database

    Simpson, Stephen Hugh; Chvátal, Lukáš; Zemánek, Pavel

    2016-01-01

    Roč. 93, č. 2 (2016), 023842:1-12 ISSN 2469-9926 R&D Projects: GA ČR GB14-36681G Institutional support: RVO:68081731 Keywords : hydrodynamic properties * colloidal rotors * angular optical binding Subject RIV: BH - Optics, Masers, Lasers Impact factor: 2.925, year: 2016

  12. Data visualization with D3 and AngularJS

    CERN Document Server

    Körner, Christoph

    2015-01-01

    If you are a web developer with experience in AngularJS and want to implement interactive visualizations using D3.js, this book is for you. Knowledge of SVG or D3.js will give you an edge to get the most out of this book.

  13. A new uncertainty relation for angular momentum and angle

    International Nuclear Information System (INIS)

    Kranold, H.U.

    1984-01-01

    An uncertainty relation of the form ΔL 2 ΔSo >=sup(h/2π)/sub(2) is derived for angular momentum and angle. The non-linear operator So measures angles and has a simple interpretation. Subject to very general conditions of rotational invariance the above relation is unique. Radial momentum is not quantized

  14. Demonstrating the Direction of Angular Velocity in Circular Motion

    Science.gov (United States)

    Demircioglu, Salih; Yurumezoglu, Kemal; Isik, Hakan

    2015-01-01

    Rotational motion is ubiquitous in nature, from astronomical systems to household devices in everyday life to elementary models of atoms. Unlike the tangential velocity vector that represents the instantaneous linear velocity (magnitude and direction), an angular velocity vector is conceptually more challenging for students to grasp. In physics…

  15. Fission fragment mass and angular distributions: Probes to study ...

    Indian Academy of Sciences (India)

    cesses (often commonly called quasifission in the literature) differ subtly in terms of the observables which are measured in a reaction, and disentangling the contributions of each of these processes is very challenging. While FF is observed when the fission barrier becomes vanishingly small at very high angular momenta, ...

  16. Earth Rotation and Coupling to Changes in Atmospheric Angular Momentum

    Science.gov (United States)

    Rosen, Richard D.; Frey, H. (Technical Monitor)

    2000-01-01

    The research supported under the contract dealt primarily with: (a) the mechanisms responsible for the exchange of angular momentum between the solid Earth and atmosphere; (b) the quality of the data sets used to estimate atmospheric angular momentum; and (c) the ability of these data and of global climate models to detect low-frequency signals in the momentum and, hence, circulation of the atmosphere. Three scientific papers reporting on the results of this research were produced during the course of the contract. These papers identified the particular torques responsible for the peak in atmospheric angular momentum and length-of-day during the 1982-93 El Nino event, and, more generally, the relative roles of torques over land and ocean in explaining the broad spectrum of variability in the length-of-day. In addition, a tendency for interannual variability in atmospheric angular momentum to increase during the last several decades of the 20th century was found in both observations and a global climate model experiment.

  17. Data compilation of angular distributions of sputtered atoms

    International Nuclear Information System (INIS)

    Yamamura, Yasunori; Takiguchi, Takashi; Tawara, Hiro.

    1990-01-01

    Sputtering on a surface is generally caused by the collision cascade developed near the surface. The process is in principle the same as that causing radiation damage in the bulk of solids. Sputtering has long been regarded as an undesirable dirty effect which destroys the cathodes and grids in gas discharge tubes or ion sources and contaminates plasma and the surrounding walls. However, sputtering is used today for many applications such as sputter ion sources, mass spectrometers and the deposition of thin films. Plasma contamination and the surface erosion of first walls due to sputtering are still the major problems in fusion research. The angular distribution of the particles sputtered from solid surfaces can possibly provide the detailed information on the collision cascade in the interior of targets. This report presents a compilation of the angular distribution of sputtered atoms at normal incidence and oblique incidence in the various combinations of incident ions and target atoms. The angular distribution of sputtered atoms from monatomic solids at normal incidence and oblique incidence, and the compilation of the data on the angular distribution of sputtered atoms are reported. (K.I.)

  18. Generation of ultraviolet radiation with wide angular tolerance in ...

    Indian Academy of Sciences (India)

    CLBO) crystal for the first time for the generation of fourth harmonic (266 nm) of Nd:YAG and third harmonic. (226.7 nm) of a dye laser radiation by second harmonic generation and sum-frequency mixing with the angular tolerance as large as ...

  19. Angular dependence of IPEN parallels plates ionization chambers

    International Nuclear Information System (INIS)

    Albuquerque, M. da P.; Caldas, L.V.E.

    1989-01-01

    The angular dependence of parallel plates ionization chambers for X-radiation of low energy is studied, aiming at the correction of any influence that may occur, due to positioning. The national fabrication chambers behaviour is evaluated and the results are compared with imported similar chambers. (C.G.C.) [pt

  20. Angular dependence of EEDF in ion-beam plasma

    International Nuclear Information System (INIS)

    Dudin, S.V.

    1995-01-01

    In a previous paper the results of measurements of electron energy distribution function (EEDF) in ion-beam plasma created by low energy broad ion beam had been presented regardless of the angular dependence of the electron distribution. The present work is specifically aimed towards elucidating the spatial structure of the EEDF in the ion-beam plasma. To solve this problem combination of the techniques of cylindrical probe, large plate probe (5 x 5 mm) and two-grid enegoanalyzer was used. Directional operation of the probes makes possible measurement of angular dependence of electron distribution function which is anisotropic in high energy region. To optimize the construction of the probe-analyzer, experiments with grids were performed, which had different size, mesh, and transparency, under different potentials, and with different distances between grids. Numerical simulation of the analyzer was performed too. It is derived that optimal design for measurements in isotropic plasma is the most plate, thin two-grid probe with maximum angular covering. Investigation of angular dependence of EEDF has shown that the distribution of trapped electrons is completely isotropic, whereas in the energy range of var-epsilon > e var-phi pl (var-phi pl - plasma potential) a strong anisotropy of the EEDF is observed

  1. QCD in the infrared with exact angular integrations

    NARCIS (Netherlands)

    Atkinson, D; Bloch, J.C R

    1998-01-01

    In a previous paper we have shown that in quantum chromodynamics the gluon propagator vanishes in the infrared limit, while the ghost propagator is more singular than a simple pole. These results were obtained after angular averaging, but here we go beyond this approximation and perform an exact

  2. Angular distribution of cosmic muons using INO–ICAL prototype ...

    Indian Academy of Sciences (India)

    2012-11-10

    Nov 10, 2012 ... Here, 2, 4, 7 and 9 layers are used in trigger criteria. This particular choice helps to increase the detector solid angular acceptance. 3. Event data analysis. Event data consist of two informations: (i) cosmic ray muon hits per layer and (ii) the corresponding time of arrival. Here, hit information is only used to ...

  3. The phenomenon of nucleon emission at high angular momentum ...

    Indian Academy of Sciences (India)

    This is contrary to the classical notion of monotonously decreasing separation energy with increasing angular momentum. We have reported in ref. [1] some results for 156Er formed in the reaction 96Zr (64Ni,xn) 155Er, which are in good agreement with the experimental results of Henss et al [2] for single neutron emission.

  4. Angular Momentum across the Hubble sequence from the CALIFA survey

    NARCIS (Netherlands)

    Falcón-Barroso, Jesús; Lyubenova, Mariya; van de Ven, Glenn

    We investigate the stellar angular momentum of galaxies across the Hubble sequence from the CALIFA survey. The distribution of CALIFA elliptical and lenticular galaxies in the λRe - ɛe diagram is consistent with that shown by the Atlas3D survey. Our data, however, show that the location of spiral

  5. Numerical simulation of side heating for controlling angular ...

    Indian Academy of Sciences (India)

    One side multipass 'V' butt weld configuration is used for this study. A series of observational tests are done with a special experimental fixture using Manual Metal Arc Welding (MMAW) to validate the proposed FEA model. It is found that the angular distortion has decreased from 2 mm to 0.4 mm with change in side heating ...

  6. A perturbed angular correlation spectrometer for material science ...

    Indian Academy of Sciences (India)

    Abstract. A four-detector perturbed angular correlation (PAC) spectrometer has been developed with ultra-fast BaF2 detectors to acquire four coincidence spectra simultane- ously, two at 180° and two at 90°. This spectrometer has double efficiency compared to that of a three-detector set-up. Higher efficiency is desirable for ...

  7. The phenomenon of nucleon emission at high angular momentum ...

    Indian Academy of Sciences (India)

    physics pp. 75–93. The phenomenon of nucleon emission at high angular momentum states of fused compound systems. T R RAJASEKARAN1 £, S SELVARAJ2 and S SANTHOSH KUMAR3. 1Department of Physics, Manonmaniam Sundaranar University, Tirunelveli 627 012, India. 2Department of Physics, The M.D.T. ...

  8. THE SIMULATION OF SCATTERING OF ELECTROMAGNETIC WAVES ON ANGULAR STRUCTURES.

    Directory of Open Access Journals (Sweden)

    P. A. Preobrazhensky

    2017-02-01

    Full Text Available The paper discusses the characteristics of scattering of electromagnetic waves on the angular diffraction structures. The solution of the problem is based on the method of integral equations. A comparative analysis of the scattering characteristics of structures with different shape is carried out.

  9. A perturbed angular correlation spectrometer for material science ...

    Indian Academy of Sciences (India)

    A four-detector perturbed angular correlation (PAC) spectrometer has been developed with ultra-fast BaF2 detectors to acquire four coincidence spectra simultaneously, two at 180° and two at 90°. This spectrometer has double efficiency compared to that of a three-detector set-up. Higher efficiency is desirable for PAC ...

  10. Continuous Variable Entanglement and Squeezing of Orbital Angular Momentum States

    DEFF Research Database (Denmark)

    Lassen, Mikael Østergaard; Leuchs, Gerd; Andersen, Ulrik Lund

    2009-01-01

    We report the first experimental characterization of the first-order continuous variable orbital angular momentum states. Using a spatially nondegenerate optical parametric oscillator (OPO) we produce quadrature entanglement between the two first-order Laguerre-Gauss modes. The family of orbital...

  11. Energy and angular distributions of backscattered electrons from ...

    Indian Academy of Sciences (India)

    Abstract. The energy and angular distributions of backscattered electrons produced under the impact of 5 keV electrons with thick Al, Ti, Ag, W and Pt targets are measured. The energy range of backscattered electrons is considered between EB = 50 eV and 5000. eV. The angle of incidence α and take-off angle θ are ...

  12. Energy and angular distributions of backscattered electrons from ...

    Indian Academy of Sciences (India)

    The energy and angular distributions of backscattered electrons produced under the impact of 5 keV electrons with thick Al, Ti, Ag, W and Pt targets are measured. The energy range of backscattered electrons is considered between B = 50 eV and 5000 eV. The angle of incidence α and take-off angle are chosen to have ...

  13. Implementing quantum walks using orbital angular momentum of classical light

    CSIR Research Space (South Africa)

    Goyal, SK

    2013-06-01

    Full Text Available We present an implementation scheme for a quantum walk in the orbital angular momentum space of a laser beam. The scheme makes use of a ring interferometer, containing a quarter-wave plate and a q plate. This setup enables one to perform...

  14. Edad avanzada y factores de riesgo para infarto agudo de miocardio Risk factors for acute myocardial infarction in the elderly

    Directory of Open Access Journals (Sweden)

    M. A. Ciruzzi

    2002-12-01

    Full Text Available Este estudio caso-control analizó en los sujetos añosos el rol de los factores de riesgo coronario en el desarrollo del infarto agudo de miocardio (IAM, estableció la naturaleza de esta asociación y el grado de riesgo. Los datos fueron obtenidos en una investigación que incluyó 1060 casos y 1071 controles, realizada en 35 unidades coronarias de centros médicos de Argentina entre noviembre de 1991 y agosto de 1994. Nuestro análisis se basó en la información de los sujetos mayores de 65 años. Los casos fueron 427 pacientes con un primer IAM. Los controles fueron 396 sujetos sin evidencias clinicas de enfermedad cardiovascular, seleccionados en los mismos centros que los casos. Los Odds Ratios (OR y su intervalo de confianza del 95% (IC 95% se obtuvieron mediante un análisis de regresión logística, incluyendo variables como la edad, educación, clase social, tabaquismo, antecedente de diabetes o hipertensión arterial, índice de masa corporal e historia familiar de enfermedad coronaria. Los factores de riesgo relacionados independientemente con IAM fueron los siguientes: hipercolesterolemia (colesterol sérico > 240 mg/dl: OR=1.76 (IC 95%: 1.25-2.49, tabaquismo: OR=1.6 (IC 95%: 1.06-2.4, hipertensión arterial: OR=2.05 (IC 95%: 1.51-2.73, diabetes OR=1.71 (IC 95%: 1.12-2.70, historia de un familiar con enfermedad coronaria: OR=1.36 (IC 95%: 0.93-1.97 y de dos o más familiares: OR=2.63 (IC 95%: 1.21-5.71. Este estudio, confirma en los sujetos de edad avanzada la importancia de la hipercolesterolemia, del tabaquismo, la hipertesión arterial, la diabetes y la historia familiar de enfermedad coronaria como factores de riesgo de IAMThis case-control study, analized the role of coronary risk factors in acute myocardial infarction (AMI in the elderly, and established the nature of this association and the degree of risk. Data were derived from an investigation (1060 cases and 1071 controls conducted in 35 coronary care units from clinical

  15. Frecuencia de los tipos de infarto agudo de miocardio según la tercera definición

    Directory of Open Access Journals (Sweden)

    Paola Calvachi Prieto

    2017-11-01

    Full Text Available Resumen: Introducción y objetivos: El infarto agudo de miocardio (IAM es una patología muy prevalente con una morbimortalidad significativa en Colombia y en el mundo. Es por esto que desde el 2011 en la Fundación Santa Fe de Bogotá se inició la recolección de datos demográficos y clínicos de pacientes con patologías cardiovasculares en una base de datos denominada Registro Colombiano de Enfermedades Cardiovasculares. Actualmente se tienen 736 registrados según el tipo de IAM que presentan de acuerdo con la tercera clasificación de infarto. Por lo anterior, se quiso conocer la frecuencia de cada tipo de infarto en nuestra población y su asociación con diferentes variables. Métodos: Se realizó un estudio descriptivo observacional de corte transversal en el cual se revisaron los datos de los pacientes pertenecientes a RECODEC y se evaluó el tipo de IAM que presentaban. Resultados: Se encontró alta frecuencia para el infarto tipo 1, intermedia para el tipo 2 y baja para los otros tipos de infarto, además una asociación positiva entre ser hombre y presentar infarto tipo 1 (n=427, 85,7% con un OR 1,91 IC95% 1,29-2,82 y una asociación entre infarto tipo 2 y ser mujer (n=51, 21,4% con un OR 0,51 IC95% 0,33-0,76. Conclusiones: Una adecuada clasificación del tipo de infarto permite definir una mejor ruta terapéutica para el paciente y predecir posibles complicaciones. Con este estudio se logró realizar la caracterización de la población en cada grupo establecido por la tercera definición. Abstract: Introduction and objectives: Acute myocardial infarction is a disease associated with a high prevalence and morbidity in Colombia and worldwide. Since 2011, at the Fundación Santa Fe de Bogotá, a registry known as RECODEC began to be used to collect data in order to characterise the population with cardiovascular diseases. A total of 736 patients have currently been registered according to the type of myocardial infarction, taking

  16. Hematoma subdural agudo traumático: estudo de 110 pacientes Acute traumatic subdural haematomas: study of 110 cases

    Directory of Open Access Journals (Sweden)

    Nicandro de Figueiredo Neto

    1996-06-01

    Full Text Available Apresentamos uma série consecutiva de 110 pacientes com hematoma subdural agudo traumático (HSDA admitidos no serviço de emergência do HBDF no período de 1°-janeiro a 1°-dezembro-1994. Todos os pacientes foram atendidos de acordo com o mesmo protocolo. Houve predominância do sexo masculino (79%, com idade variando entre 14 e 70 anos, sendo os atropelamentos (34% e os acidentes automobilísticos (20% as causas mais comuns. A maioria dos pacientes (85,7% foi admitida muito grave, com 8 pontos ou menos na Escala de Coma Glasgow (ECG, o que influenciou diretamente na mortalidade. A tomografia computadorizada de crânio foi o exame diagnóstico de escolha que mostrou serem as contusões e o inchaço cerebral ("swelling" as lesões intracranianas associadas mais freqüentes. A cirurgia foi realizada em 45,1% dos pacientes, e, em sua maioria, através de craniotomia fronto-têmporo-parietal ampla, com drenagem do hematoma, seguida de plástica da dura-mater. Em 54,9% as condições clínicas não permitiram a realização da cirurgia; neste grupo, cerca de 69,6% estavam em coma profundo à admissão, com 3 pontos na ECG. A letalidade cirúrgica foi de 61,2% e esteve diretamente relacionada à condição clínica inicial e à idade do paciente. A letalidade, incluindo todos os pacientes cirúrgicos e não cirúrgicos com HSDA, mesmo aqueles admitidos já com sinais de falência de tronco cerebral, foi de 79,5%. Além destes pacientes que faleceram, cerca de 7% evoluíram sem seqüelas ou com seqüelas mínimas; outros 11,4% com seqüelas de moderadas a paves e 2,1 % permaneceram em estado vegetativo persistente. Nossos dados estão de acordo com os da literatura no que se refere a elevada taxa de morbidade e mortalidade dos pacientes com HSDA.We report a series of 110 patients with acute traumatic subdural hematoma (ASDH admitted at HBDF emergency within 1994 (January Is1 to December PJ.All patients were treated according to the same protocol

  17. Power calculation of linear and angular incremental encoders

    Science.gov (United States)

    Prokofev, Aleksandr V.; Timofeev, Aleksandr N.; Mednikov, Sergey V.; Sycheva, Elena A.

    2016-04-01

    Automation technology is constantly expanding its role in improving the efficiency of manufacturing and testing processes in all branches of industry. More than ever before, the mechanical movements of linear slides, rotary tables, robot arms, actuators, etc. are numerically controlled. Linear and angular incremental photoelectric encoders measure mechanical motion and transmit the measured values back to the control unit. The capabilities of these systems are undergoing continual development in terms of their resolution, accuracy and reliability, their measuring ranges, and maximum speeds. This article discusses the method of power calculation of linear and angular incremental photoelectric encoders, to find the optimum parameters for its components, such as light emitters, photo-detectors, linear and angular scales, optical components etc. It analyzes methods and devices that permit high resolutions in the order of 0.001 mm or 0.001°, as well as large measuring lengths of over 100 mm. In linear and angular incremental photoelectric encoders optical beam is usually formulated by a condenser lens passes through the measuring unit changes its value depending on the movement of a scanning head or measuring raster. Past light beam is converting into an electrical signal by the photo-detecter's block for processing in the electrical block. Therefore, for calculating the energy source is a value of the desired value of the optical signal at the input of the photo-detecter's block, which reliably recorded and processed in the electronic unit of linear and angular incremental optoelectronic encoders. Automation technology is constantly expanding its role in improving the efficiency of manufacturing and testing processes in all branches of industry. More than ever before, the mechanical movements of linear slides, rotary tables, robot arms, actuators, etc. are numerically controlled. Linear and angular incremental photoelectric encoders measure mechanical motion and

  18. Abdome agudo em pós-operatório tardio de apendicite aguda: pode não ser bridas

    Directory of Open Access Journals (Sweden)

    Bruno Castro Fernandes

    2014-10-01

    Full Text Available As ressecções intestinais em países desenvolvidos ocorrem devido às malformações congênitas. Em países em desenvolvimento essas resseções ocorrem por causas potencialmente evitáveis, como invaginação intestinal irredutível, trauma abdominal fechado, volvo de jejuno-íleo, enterocolite necrosante, hérnia inguinal estrangulada e obstrução por bridas pós-operatórias. O volvo intestinal na infância é raro e geralmente de causas iatrogênicas causado, por exemplo, pela presença de grampos soltos a cavidade intestinal após apendicectomia laparoscópica. O volvo de jejuno-íleo pode ser secundário à isquemia nos casos de gastrosquise tratadas com silo ou mesmo pela colocação de banda gástrica pós-laparoscopia, ou ainda pela presença de lipoma mesentérico. Não foi identificado trabalho na literatura recente sobre volvo jejuno-íleo e isquemia e necrose de segmento de alça intestinal. O autores relatam um caso de abdome agudo obstrutivo em criança de 6 anos, em pós-operatório tardio (4 anos de apendicectomia aberta e cuja ressecção de segmento de Alça intestinal foi necessária nas duas oportunidades mas por motivos diferentes. Situações adversas em abdome agudo pós-operatório podem não ser por aderências intestinais, mas por situações mais graves e o cirurgião deve estar preparado para corrigir sua tática operatória.

  19. La inmunización con productos de excreción-secreción de Trichinella spiralis unido al bloqueo de CTLA-4 produce un elevado grado de protección ante un reto con el parásito

    Directory of Open Access Journals (Sweden)

    José Lino Zumaquero-Ríos

    2017-04-01

    Full Text Available En la búsqueda de una vacuna experimental efectiva contra Trichinella spiralis se han utilizado diferentes estrategias, pero el grado de protección alcanzado en la casi totalidad de los ensayos es insuficiente para lograr un adecuado control de la enfermedad. En la literatura hay evidencias de que moléculas inhibidoras de la activación de los linfocitos T están implicadas en la regulación de la respuesta inmune contra los helmintos. El bloqueo de estas moléculas puede ser un blanco potencial para el tratamiento de las infecciones causadas por estos parásitos. Por otra parte, se ha informado que la inmunización con productos de excreción-secreción de larvas musculares de T. spiralis proporciona una inmunidad protectora parcial. La infección con el parásito induce una elevada población de linfocitos T reguladores que modulan la respuesta inmune. En este trabajo encontramos que la inmunización con antígenos de excreción-secreción de larvas musculares, más el bloqueo de la molécula inhibidora CTLA-4 en los linfocitos T, causa una significativa reducción de las larvas del parásito en un modelo experimental murino. De esta forma, queda demostrado que la eliminación del efecto supresor inducido por el helminto da por resultado una respuesta Th2 protectora más potente.

  20. Continuous theta burst stimulation of angular gyrus reduces subjective recollection.

    Directory of Open Access Journals (Sweden)

    Yasemin Yazar

    Full Text Available The contribution of lateral parietal regions such as the angular gyrus to human episodic memory has been the subject of much debate following widespread observations of left parietal activity in healthy volunteers during functional neuroimaging studies of memory retrieval. Patients with lateral parietal lesions are not amnesic, but recent evidence indicates that their memory abilities may not be entirely preserved. Whereas recollection appears intact when objective measures such as source accuracy are used, patients often exhibit reduced subjective confidence in their accurate recollections. When asked to recall autobiographical memories, they may produce spontaneous narratives that lack richness and specificity, but can remember specific details when prompted. Two distinct theoretical accounts have been proposed to explain these results: that the patients have a deficit in the bottom-up capturing of attention by retrieval output, or that they have an impairment in the subjective experience of recollection. The present study aimed to differentiate between these accounts using continuous theta burst stimulation (cTBS in healthy participants to disrupt function of specific left parietal subregions, including angular gyrus. Inconsistent with predictions of the attentional theory, angular gyrus cTBS did not result in greater impairment of free recall than cued recall. Supporting predictions of the subjective recollection account, temporary disruption of angular gyrus was associated with highly accurate source recollection accuracy but a selective reduction in participants' rated source confidence. The findings are consistent with a role for angular gyrus in the integration of memory features into a conscious representation that enables the subjective experience of remembering.

  1. The role of angular momentum conservation law in statistical mechanics

    Directory of Open Access Journals (Sweden)

    I.M. Dubrovskii

    2008-12-01

    Full Text Available Within the limits of Khinchin ideas [A.Y. Khinchin, Mathematical Foundation of Statistical Mechanics. NY, Ed. Dover, 1949] the importance of momentum and angular momentum conservation laws was analyzed for two cases: for uniform magnetic field and when magnetic field is absent. The law of momentum conservation does not change the density of probability distribution in both cases, just as it is assumed in the conventional theory. It is shown that in systems where the kinetic energy depends only on particle momenta canonically conjugated with Cartesian coordinates being their diagonal quadric form,the angular momentum conservation law changes the density of distribution of the system only in case the full angular momentum of a system is not equal to zero. In the gas of charged particles in a uniform magnetic field the density of distribution also varies if the angular momentum is zero [see Dubrovskii I.M., Condensed Matter Physics, 2206, 9, 23]. Two-dimensional gas of charged particles located within a section of an endless strip filled with gas in magnetic field is considered. Under such conditions the angular momentum is not conserved. Directional particle flows take place close to the strip boundaries, and, as a consequence, the phase trajectory of the considered set of particles does not remain within the limited volume of the phase space. In order to apply a statistical thermodynamics method, it was suggested to consider near-boundary trajectories relative to a reference system that moves uniformly. It was shown that if the diameter of an orbit having average thermal energy is much smaller than a strip width, the corrections to thermodynamic functions are small depending on magnetic field. Only the average velocity of near-boundary particles that form near-boundary electric currents creating the paramagnetic moment turn out to be essential.

  2. Effect of the energy spectrum and angular momentum of pre-scission neutrons on the prediction of fission fragment angular anisotropy by the models

    Science.gov (United States)

    Soheyli, Saeed; Khanlari, Marzieh Varasteh

    2016-04-01

    Effects of the various neutron emission energy spectra, as well as the influence of the angular momentum of pre-scission neutrons on theoretical predictions of fission fragment angular anisotropies for several heavy-ion induced fission systems are considered. Although theoretical calculations of angular anisotropy are very sensitive to neutron emission correction, the effects of the different values of kinetic energy of emitted neutrons derived from the various neutron emission energy spectra before reaching to the saddle point on the prediction of fission fragment angular distribution by the model are not significant and can be neglected, since these effects on angular anisotropies of fission fragments for a wide range of fissility parameters and excitation energies of compound nuclei are not more than 10%. Furthermore, the theoretical prediction of fission fragment angular anisotropy is not sensitive to the angular momentum of emitted neutrons.

  3. Bloqueio dos nervos femoral e isquiático guiados por ultrassom em paciente anticoagulado: case reports Bloqueo de los nervios femoral e isquiático guiados por ultrasonido en paciente anticoagulado Ultrasound-guided femoral and sciatic nerve blocks in an anticoagulated patient: relato de casos

    Directory of Open Access Journals (Sweden)

    Leonardo Henrique Cunha Ferraro

    2010-08-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: O uso de ultrassom para guiar a punção em bloqueios de nervos periféricos tem-se tornado cada vez mais frequente. Com a menor probabilidade de promover lesões vasculares, o ultrassom torna-se uma ferramenta interessante na realização de bloqueios periféricos, especialmente nos pacientes em uso de anticoagulantes ou com distúrbios da coagulação. O objetivo foi relatar dois casos em que se realizaram os bloqueios isquiático e femoral guiados por ultrassom em pacientes anticoagulados. RELATO DOS CASOS: No primeiro caso, a cirurgia realizada consistiu na amputação de antepé esquerdo devido a necrose e sinais de infecção e, no segundo caso, em limpeza cirúrgica de joelho esquerdo. Os pacientes apr esentavam distúrbios de coagulação com atividade de protrombina e tempo de tromboplastina ativado acima dos valores da normalidade. Ambos os pacientes foram submetidos a bloqueio femoral e isquiático guiados por ultrassom, evoluindo sem alteração motora ou sensitiva nos territórios desses nervos e sem hematoma no local da punção. CONCLUSÕES: A anticoagulação impõe certas restrições à aplicação das técnicas anestésicas regionais clássicas. Com o avanço dos equipamentos e métodos de ultrassom, hoje é possível identificar com alta precisão estruturas vasculares e neurais. Isso possibilita que a punção guiada por ultrassom seja mais precisa, tanto para atingir a área de interesse como para minimizar os riscos de lesão vascular acidental. Até o presente, não se recomenda a realização de bloqueio periférico em pacientes anticoagulados ou portadores de coagulopatias. Entretanto, considerando que há poucos relatos sobre bloqueios regionais com ultrassom em situações de coagulopatias, a segurança de tal técnica nessas condições ainda não foi estabelecida.JUSTIFICATIVA Y OBJETIVOS: El uso del ultrasonido para guiar la punción en bloqueos de nervios periféricos se ha convertido

  4. Controvérsias acerca da acidose hipercápnica na síndrome do desconforto respiratório agudo Controversies involving hypercapnic acidosis in acute respiratory distress syndrome

    Directory of Open Access Journals (Sweden)

    Liliane Nardelli

    2009-12-01

    Full Text Available A síndrome do desconforto respiratório agudo é caracterizada por uma reação inflamatória difusa do parênquima pulmonar induzida por um insulto direto ao epitélio alveolar (síndrome do desconforto respiratório agudo pulmonar ou indireto por meio do endotélio vascular (síndrome do desconforto respiratório agudo extrapulmonar. A principal estratégia terapêutica da síndrome do desconforto respiratório agudo é o suporte ventilatório. Entretanto, a ventilação mecânica pode agravar a lesão pulmonar. Nesse contexto, uma estratégia ventilatória protetora com baixo volume corrente foi proposta. Tal estratégia reduziu a taxa de mortalidade dos pacientes com síndrome do desconforto respiratório agudo, porém acarretou acidose hipercápnica. O presente artigo apresenta uma revisão da literatura acerca dos efeitos da acidose hipercápnica na síndrome do desconforto respiratório agudo. Para tal, realizou-se uma revisão sistemática da literatura científica conforme critérios já estabelecidos para análise documental incluindo artigos experimentais e clínicos sobre o tema, usando-se como bases de dados MedLine, LILACS, SciElo, PubMed, Cochrane. A acidose hipercápnica é defendida por alguns autores como moduladora do processo inflamatório da síndrome do desconforto respiratório agudo. Entretanto, estudos clínicos e experimentais acerca dos efeitos da acidose hipercápnica têm demonstrado resultados controversos. Logo, é fundamental a realização de mais pesquisas para elucidar o papel da acidose hipercápnica na síndrome do desconforto respiratório agudo.Acute respiratory distress syndrome is characterized by a diffuse inflammatory reaction of lung parenchyma induced by a direct insult to the alveolar epithelium (pulmonary acute respiratory distress syndrome or an indirect lesion through the vascular endothelium (extrapulmonary acute respiratory distress syndrome. The main therapeutic strategy for acute respiratory

  5. A New Shape Description Method Using Angular Radial Transform

    Science.gov (United States)

    Lee, Jong-Min; Kim, Whoi-Yul

    Shape is one of the primary low-level image features in content-based image retrieval. In this paper we propose a new shape description method that consists of a rotationally invariant angular radial transform descriptor (IARTD). The IARTD is a feature vector that combines the magnitude and aligned phases of the angular radial transform (ART) coefficients. A phase correction scheme is employed to produce the aligned phase so that the IARTD is invariant to rotation. The distance between two IARTDs is defined by combining differences in the magnitudes and aligned phases. In an experiment using the MPEG-7 shape dataset, the proposed method outperforms existing methods; the average BEP of the proposed method is 57.69%, while the average BEPs of the invariant Zernike moments descriptor and the traditional ART are 41.64% and 36.51%, respectively.

  6. Characteristic angular scales in cosmic microwave background radiation

    International Nuclear Information System (INIS)

    Ghasemi, F.; Bahraminasab, A.; Movahed, M.S.; Rahvar, S.; Sreenivasan, K.R.; Tabar, M.R.R.

    2006-12-01

    We investigate the stochasticity in temperature fluctuations in the cosmic microwave background (CMB) radiation data from the Wilkinson Microwave Anisotropy Probe. We show that the angular fluctuation of the temperature is a Markov process with a Markov angular scale, Markov 1.01 -0.07 +0.09 . We characterize the complexity of the CMB fluctuations by means of a Fokker-Planck or Langevin equation and measure the associated Kramers-Moyal coefficients for the fluctuating temperature field T(n-circumflex) and its increment, ΔT = T(n-circumflex 1 ) - T(n-circumflex 2 ). Through this method we show that temperature fluctuations in the CMB have fat tails compared to a Gaussian distribution. (author)

  7. Resilience of hybrid optical angular momentum qubits to turbulence

    Science.gov (United States)

    Farías, Osvaldo Jiménez; D'Ambrosio, Vincenzo; Taballione, Caterina; Bisesto, Fabrizio; Slussarenko, Sergei; Aolita, Leandro; Marrucci, Lorenzo; Walborn, Stephen P.; Sciarrino, Fabio

    2015-02-01

    Recent schemes to encode quantum information into the total angular momentum of light, defining rotation-invariant hybrid qubits composed of the polarization and orbital angular momentum degrees of freedom, present interesting applications for quantum information technology. However, there remains the question as to how detrimental effects such as random spatial perturbations affect these encodings. Here, we demonstrate that alignment-free quantum communication through a turbulent channel based on hybrid qubits can be achieved with unit transmission fidelity. In our experiment, alignment-free qubits are produced with q-plates and sent through a homemade turbulence chamber. The decoding procedure, also realized with q-plates, relies on both degrees of freedom and renders an intrinsic error-filtering mechanism that maps errors into losses.

  8. Angular dependence of the exchange bias for the bistable state

    Energy Technology Data Exchange (ETDEWEB)

    Bai, Yuhao [College of Physics and Electronic Information, Shanxi Normal University, Linfen 041004 (China); Research College of materials science, Shanxi Normal University, Linfen 041004 (China); Xu, Xiaohong, E-mail: xuxh@dns.sxnu.edu.cn [Research College of materials science, Shanxi Normal University, Linfen 041004 (China); Key Laboratory of Magnetic Molecules and Magnetic Information Materials, Ministry of Education, Shanxi Normal University, Linfen 041004 (China)

    2017-06-15

    The angular dependence of the exchange bias (ADEB) has been investigated in detail when the exchange-coupled ferromagnetic (FM)/antiferromagnetic (AFM) bilayer is in the bistable state. Complete and incomplete jump phenomena were found at the intrinsic easy and hard axes, when they pass through two special positions making the angular deviation of 58.2826° and 121.7174° from the easy axis of the uniaxial anisotropy, respectively. The combination of these different types of the jump phenomena at the intrinsic easy and hard axes yields five distinct types of the ADEB. The physical condition for each type of ADEB is established. Additionally, the extreme value problem of the exchange bias field and coercivity are also discussed, which is an important technological issue in the design of the magnetoresistive and spintronic devices. These results enable us to make a comprehensive understanding of the experimental ADEB curves.

  9. Angular diameters of Magellanic Cloud plantary nebulae. I. Speckle interferometry

    International Nuclear Information System (INIS)

    Wood, P.R.; Bessell, M.S.; Dopita, M.A.

    1986-01-01

    Speckle interferometric angular diameters of Magellanic Cloud planetary nebulae are presented. The mass of ionized gas in each nebula has been derived from the angular diameter and published H-beta line fluxes; the derives masses range from less than 0.006 to more than 0.19 solar mass. The planetary nebulae observed were the brightest in the Magellanic Clouds; consequently, they are all relatively small, young, bright, and dense. They are almost certainly only partially ionized, so that the masses derived for the ionized parts of the nebula are lower limits to the total nebula mass. The properties of the Magellanic Cloud nebulae are compared with those of planetary nebulae at the galactic center. 27 references

  10. Relativistic correction to the deuteron magnetic moment and angular condition

    International Nuclear Information System (INIS)

    Kondratyuk, L.A.; Strikman, M.I.

    1983-01-01

    The relativistic correction (RC) to the deuteron magnetic moment μsub(d) is investigated using the light-cone dynamics. The restrictions imposed by the angular condition on the electromagnetic current operator of deuteron are discussed in detail. It is shown that the additive model for the current operator of interacting consistuencies is consistent with the angular condition only for the two first terms of expansion of the ''good'' electromagnetic current component jsub(+) in powers of the momentum transfer q. The RC into μsub(d) is calculated using the mattix element of the ''good'' component. The account of RC decreases essentially the discrepancy between the theoretical and experimental values. The value of Δsub(μ) is determined for the Hamada-Johnston potential hard core potential (0.93x10 -2 ) for the Reid soft core potential (0.71x10 -2 ) and for the Paris potential (0.63x10 -2 )

  11. Investigating pointing tasks across angularly coupled display areas

    DEFF Research Database (Denmark)

    Hennecke, Fabian; De Luca, Alexander; Nguyen, Ngo Dieu Huong

    2013-01-01

    user performance still hold – in particular when pointing is performed across differently oriented areas. To answer this question, we conducted an experiment on an angularly coupled display – the Curve – with two input conditions: direct touch and indirect mouse pointer. Our findings show......Pointing tasks are a crucial part of today’s graphical user interfaces. They are well understood for flat displays and most prominently are modeled through Fitts’ Law. For novel displays (e.g., curved displays with multi-purpose areas), however, it remains unclear whether such models for predicting...... that the target position affects overall pointing speed and offset in both conditions. However, we also found that Fitts’ Law can in fact still be used to predict performance as on flat displays. Our results help designers to optimize user interfaces on angularly coupled displays when pointing tasks are involved....

  12. Angular dependence of the parallel plate ionization chambers of Ipen

    International Nuclear Information System (INIS)

    Albuquerque, M. da P.P.; Caldas, L.

    1989-08-01

    The ionization chambers with parallel plates designed and constructed at IPEN for the dosimetry of soft X-radiation fields were studied in relation to thein angular dependence between O and +- 90 0 . The objective of this study is to verify the chambers response variation for small positioning errors during the field dosimetry used in Radiotherapy. The results were compared with those of commercial parallel plate ionization chambers used as secondary and testiary standards. (author) [pt

  13. Spin and orbital angular momentum propagation in anisotropic media: theory

    International Nuclear Information System (INIS)

    Picón, Antonio; Benseny, Albert; Mompart, Jordi; Calvo, Gabriel F

    2011-01-01

    This paper is devoted to a study of the propagation of light beams carrying orbital angular momentum in optically anisotropic media. We first review some properties of homogeneous anisotropic media, and describe how the paraxial formalism is modified in order to proceed with a new approach dealing with the general setting of paraxial propagation along uniaxial inhomogeneous media. This approach is suitable for describing space-variant optical-axis phase plates

  14. Characterization of the bell-shaped vibratory angular rate gyro.

    Science.gov (United States)

    Liu, Ning; Su, Zhong; Li, Qing; Fu, MengYin; Liu, Hong; Fan, JunFang

    2013-08-07

    The bell-shaped vibratory angular rate gyro (abbreviated as BVG) is a novel shell vibratory gyroscope, which is inspired by the Chinese traditional bell. It sensitizes angular velocity through the standing wave precession effect. The bell-shaped resonator is a core component of the BVG and looks like the millimeter-grade Chinese traditional bell, such as QianLong Bell and Yongle Bell. It is made of Ni43CrTi, which is a constant modulus alloy. The exciting element, control element and detection element are uniformly distributed and attached to the resonator, respectively. This work presents the design, analysis and experimentation on the BVG. It is most important to analyze the vibratory character of the bell-shaped resonator. The strain equation, internal force and the resonator's equilibrium differential equation are derived in the orthogonal curvilinear coordinate system. When the input angular velocity is existent on the sensitive axis, an analysis of the vibratory character is performed using the theory of thin shells. On this basis, the mode shape function and the simplified second order normal vibration mode dynamical equation are obtained. The coriolis coupling relationship about the primary mode and secondary mode is established. The methods of the signal processing and control loop are presented. Analyzing the impact resistance property of the bell-shaped resonator, which is compared with other shell resonators using the Finite Element Method, demonstrates that BVG has the advantage of a better impact resistance property. A reasonable means of installation and a prototypal gyro are designed. The gyroscopic effect of the BVG is characterized through experiments. Experimental results show that the BVG has not only the advantages of low cost, low power, long work life, high sensitivity, and so on, but, also, of a simple structure and a better impact resistance property for low and medium angular velocity measurements.

  15. Uniqueness for the inverse backscattering problem for angularly controlled potentials

    International Nuclear Information System (INIS)

    Rakesh; Uhlmann, Gunther

    2014-01-01

    We consider the problem of recovering a smooth, compactly supported potential on R 3 from its backscattering data. We show that if two such potentials have the same backscattering data and the difference of the two potentials has controlled angular derivatives, then the two potentials are identical. In particular, if two potentials differ by a finite linear combination of spherical harmonics with radial coefficients and have the same backscattering data then the two potentials are identical. (paper)

  16. Spatial Angular Compounding Technique for H-Scan Ultrasound Imaging.

    Science.gov (United States)

    Khairalseed, Mawia; Xiong, Fangyuan; Kim, Jung-Whan; Mattrey, Robert F; Parker, Kevin J; Hoyt, Kenneth

    2018-01-01

    H-Scan is a new ultrasound imaging technique that relies on matching a model of pulse-echo formation to the mathematics of a class of Gaussian-weighted Hermite polynomials. This technique may be beneficial in the measurement of relative scatterer sizes and in cancer therapy, particularly for early response to drug treatment. Because current H-scan techniques use focused ultrasound data acquisitions, spatial resolution degrades away from the focal region and inherently affects relative scatterer size estimation. Although the resolution of ultrasound plane wave imaging can be inferior to that of traditional focused ultrasound approaches, the former exhibits a homogeneous spatial resolution throughout the image plane. The purpose of this study was to implement H-scan using plane wave imaging and investigate the impact of spatial angular compounding on H-scan image quality. Parallel convolution filters using two different Gaussian-weighted Hermite polynomials that describe ultrasound scattering events are applied to the radiofrequency data. The H-scan processing is done on each radiofrequency image plane before averaging to get the angular compounded image. The relative strength from each convolution is color-coded to represent relative scatterer size. Given results from a series of phantom materials, H-scan imaging with spatial angular compounding more accurately reflects the true scatterer size caused by reductions in the system point spread function and improved signal-to-noise ratio. Preliminary in vivo H-scan imaging of tumor-bearing animals suggests this modality may be useful for monitoring early response to chemotherapeutic treatment. Overall, H-scan imaging using ultrasound plane waves and spatial angular compounding is a promising approach for visualizing the relative size and distribution of acoustic scattering sources. Copyright © 2018 World Federation for Ultrasound in Medicine and Biology. Published by Elsevier Inc. All rights reserved.

  17. Automatic spectrometer for γ-γ angular correlation

    International Nuclear Information System (INIS)

    Saxena, R.N.; Monteiro, M.T.S.; Bairrio Nuevo Junior, A.

    1974-01-01

    An automated γ-γ angular correlation spectrometer is described in detail. Eletronic arrangements used in integral and differential measurements have also been described. In part I there is a short theoretical introduction, the experimental arrangement is described in part II. The results of the directional correlation measurement of γ-cascades in 60 Ni and 75 As and of the lifetime measurement of excited states in 181 Ta and 81 Br have been described in part III

  18. Characterization of the Bell-Shaped Vibratory Angular Rate Gyro

    Directory of Open Access Journals (Sweden)

    Junfang Fan

    2013-08-01

    Full Text Available The bell-shaped vibratory angular rate gyro (abbreviated as BVG is a novel shell vibratory gyroscope, which is inspired by the Chinese traditional bell. It sensitizes angular velocity through the standing wave precession effect. The bell-shaped resonator is a core component of the BVG and looks like the millimeter-grade Chinese traditional bell, such as QianLong Bell and Yongle Bell. It is made of Ni43CrTi, which is a constant modulus alloy. The exciting element, control element and detection element are uniformly distributed and attached to the resonator, respectively. This work presents the design, analysis and experimentation on the BVG. It is most important to analyze the vibratory character of the bell-shaped resonator. The strain equation, internal force and the resonator's equilibrium differential equation are derived in the orthogonal curvilinear coordinate system. When the input angular velocity is existent on the sensitive axis, an analysis of the vibratory character is performed using the theory of thin shells. On this basis, the mode shape function and the simplified second order normal vibration mode dynamical equation are obtained. The coriolis coupling relationship about the primary mode and secondary mode is established. The methods of the signal processing and control loop are presented. Analyzing the impact resistance property of the bell-shaped resonator, which is compared with other shell resonators using the Finite Element Method, demonstrates that BVG has the advantage of a better impact resistance property. A reasonable means of installation and a prototypal gyro are designed. The gyroscopic effect of the BVG is characterized through experiments. Experimental results show that the BVG has not only the advantages of low cost, low power, long work life, high sensitivity, and so on, but, also, of a simple structure and a better impact resistance property for low and medium angular velocity measurements.

  19. Tunnelling of orbital angular momentum in parallel optical waveguides

    International Nuclear Information System (INIS)

    Alexeyev, C N; Fadeyeva, T A; Yavorsky, M A; Boklag, N A

    2011-01-01

    We study the evolution of circularly polarized optical vortices (OVs) in the system of two coupled few-mode optical fibres. We demonstrate that upon propagation OVs tunnel into the adjacent fibre as a complex superposition of OVs that comprise also OVs of opposite polarization and topological charge. The initial OV may tunnel into the other fibre as the same vortex state of lesser energy. The evolution of the orbital angular momentum in coupled fibres is studied

  20. prevalence of angular leaf spot disease and sources of resistance

    African Journals Online (AJOL)

    USER

    la gravité et l'incidence de la maladie et l'effet des pratiques agronomiques et des facteurs environnement aux sur la prévalence de ...... Thika Kenya. Saettler, A.W. 1991. Angular leaf spot. In: Compendium of bean diseases, 15-16. Hall, R. (Ed.). APS Press.St Paul, USA. Sahile, S., Ahmed, S., Fininsa, C., Abang, M. M. and ...

  1. Angular-momentum nonclassicality by breaking classical bounds on statistics

    International Nuclear Information System (INIS)

    Luis, Alfredo; Rivas, Angel

    2011-01-01

    We derive simple practical procedures revealing the quantum behavior of angular momentum variables by the violation of classical upper bounds on the statistics. Data analysis is minimum and definite conclusions are obtained without evaluation of moments, or any other more sophisticated procedures. These nonclassical tests are very general and independent of other typical quantum signatures of nonclassical behavior such as sub-Poissonian statistics, squeezing, or oscillatory statistics, being insensitive to the nonclassical behavior displayed by other variables.

  2. Potential model for fusion and angular momentum localisation

    International Nuclear Information System (INIS)

    Hugi, M.; Jarczyk, L.; Kamys, B.

    1981-01-01

    The elastic scattering and fusion cross sections for different heavy-ion systems with (A 1 + A 2 ) 9 Be, 8 Be) reaction as a representative example for direct processes in the system 9 Be + 28 Si is well reproduced by a DWBA calculation which in turn leads to a localisation of fusion and direct processes in mutually exclusive regions of the angular momentum space. (author)

  3. Unveiling the orbital angular momentum and acceleration of electron beams.

    Science.gov (United States)

    Shiloh, Roy; Tsur, Yuval; Remez, Roei; Lereah, Yossi; Malomed, Boris A; Shvedov, Vladlen; Hnatovsky, Cyril; Krolikowski, Wieslaw; Arie, Ady

    2015-03-06

    New forms of electron beams have been intensively investigated recently, including vortex beams carrying orbital angular momentum, as well as Airy beams propagating along a parabolic trajectory. Their traits may be harnessed for applications in materials science, electron microscopy, and interferometry, and so it is important to measure their properties with ease. Here, we show how one may immediately quantify these beams' parameters without need for additional fabrication or nonstandard microscopic tools. Our experimental results are backed by numerical simulations and analytic derivation.

  4. Monitoring Location and Angular Orientation of a Pill

    Science.gov (United States)

    Schipper, John F.

    2012-01-01

    A mobile pill transmitter system moves through, or adjacent to, one or more organs in an animal or human body, while transmitting signals from its present location and/or present angular orientation. The system also provides signals from which the present roll angle of the pill, about a selected axis, can be determined. When the location coordinates angular orientation and the roll angle of the pill are within selected ranges, an aperture on the pill container releases a selected chemical into, or onto, the body. Optionally, the pill, as it moves, provides a sequence of visually perceptible images. The times for image formation may correspond to times at which the pill transmitter system location or image satisfies one of at least four criteria. This invention provides and supplies an algorithm for exact determination of location coordinates and angular orientation coordinates for a mobile pill transmitter (PT), or other similar device that is introduced into, and moves within, a GI tract of a human or animal body. A set of as many as eight nonlinear equations has been developed and applied, relating propagation of a wireless signal between either two, three, or more transmitting antennas located on the PT, to four or more non-coplanar receiving antennas located on a signal receiver appliance worn by the user. The equations are solved exactly, without approximations or iterations, and are applied in several environments: (1) association of a visual image, transmitted by the PT at each of a second sequence of times, with a PT location and PT angular orientation at that time; (2) determination of a position within the body at which a drug or chemical substance or other treatment is to be delivered to a selected portion of the body; (3) monitoring, after delivery, of the effect(s) of administration of the treatment; and (4) determination of one or more positions within the body where provision and examination of a finer-scale image is warranted.

  5. BAO from Angular Clustering: Optimization and Mitigation of Theoretical Systematics

    Energy Technology Data Exchange (ETDEWEB)

    Crocce, M.; et al.

    2018-01-13

    We study the theoretical systematics and optimize the methodology in Baryon Acoustic Oscillations (BAO) detections using the angular correlation function with tomographic bins. We calibrate and optimize the pipeline for the Dark Energy Survey Year 1 dataset using 1800 mocks. We compare the BAO fitting results obtained with three estimators: the Maximum Likelihood Estimator (MLE), Profile Likelihood, and Markov Chain Monte Carlo. The MLE method yields the least bias in the fit results (bias/spread $\\sim 0.02$) and the error bar derived is the closest to the Gaussian results (1% from 68% Gaussian expectation). When there is mismatch between the template and the data either due to incorrect fiducial cosmology or photo-$z$ error, the MLE again gives the least-biased results. The BAO angular shift that is estimated based on the sound horizon and the angular diameter distance agree with the numerical fit. Various analysis choices are further tested: the number of redshift bins, cross-correlations, and angular binning. We propose two methods to correct the mock covariance when the final sample properties are slightly different from those used to create the mock. We show that the sample changes can be accommodated with the help of the Gaussian covariance matrix or more effectively using the eigenmode expansion of the mock covariance. The eigenmode expansion is significantly less susceptible to statistical fluctuations relative to the direct measurements of the covariance matrix because the number of free parameters is substantially reduced [$p$ parameters versus $p(p+1)/2$ from direct measurement].

  6. Metamaterials-based Salisbury screens with reduced angular sensitivity

    Science.gov (United States)

    Wells, Brian M.; Roberts, Christopher M.; Podolskiy, Viktor A.

    2014-10-01

    We demonstrate that the incorporation of nonlocal nanowire metamaterials into Salisbury screens allows for a substantial reduction of the dependence of incident angle on the absorption maximum. Realizations of angle-independent Salisbury screens for the near-IR, mid-IR, and GHz frequencies are proposed and their performances are analyzed analytically and numerically. It is shown that nonlocal effective medium theory adequately describes the angular dependence of nanowire-based Salisbury screens.

  7. Angular momentum coupling in atom-atom collisions

    International Nuclear Information System (INIS)

    Grosser, J.

    1986-01-01

    The coupling between the electronic angular momentum and the rotating atom-atom axis in the initial or the final phase of an atom-atom collision is discussed, making use of the concepts of radial and rotational (Coriolis) coupling between different molecular states. The description is based on a limited number of well-understood approximations, and it allows an illustrative geometric representation of the transition from the body fixed to the space fixed motion of the electrons. (orig.)

  8. Introduction to the graphical theory of angular momentum Case studies

    CERN Document Server

    Balcar, Ewald

    2009-01-01

    Application of quantum mechanics in physics and chemistry often entails manipulation and evaluation of sums and products of coupling coefficients for the theory of angular momentum. Challenges encountered in such work can be tamed by graphical techniques that provide both the insight and analytical power. The book is the first step-by-step exposition of a graphical method grounded in established work. Copious exercises recover standard results but demonstrate the power to go beyond.

  9. Superpositions of light fields carrying orbital angular momentum

    CSIR Research Space (South Africa)

    Dudley, Angela L

    2012-01-01

    Full Text Available OF LIGHT FIELDS CARRYING ORBITAL ANGULAR MOMENTUM By Angela Dudley A thesis submitted in fulfilment of the academic requirements for the PhD degree of Science in the School of Chemistry and Physics, University of KwaZulu-Natal, Durban... this dissertation for submission. _________________________________ Prof Andrew Forbes On this_______day of____________________________2012 iv Declaration 2 - Plagiarism I, ???????????????. declare that 1...

  10. Angular correlation of annihilation photons in frozen aqueous solutions

    DEFF Research Database (Denmark)

    Milosevic-Kvajic, M.; Mogensen, O. E.; Kvajic, G.

    1972-01-01

    Linear‐slit angular correlation curves were obtained at about −140°C for frozen aqueous solutions of HF, HCl, HBr, HI, NH3, FeCl2, FeCl3, NaI, H2SO4, NHO3, MnSO4, KMnO4, K2Cr2O7, NaOH, and LiOH. We found no appreciable influence of a 4% concentration of the last seven impurities. Only halide‐cont...

  11. How we are building a complex Angular 2 application at Inspire

    CERN Multimedia

    CERN. Geneva

    2017-01-01

    In this talk, at first we will talk about some basic and advanced Angular 2 concepts, then we will share our experiences with Angular 2 that we had so far while building a complex library and web applications at Inspire.

  12. Raquianestesia total após bloqueio do plexo lombar por via posterior: relato de caso Raquianestesia total después del bloqueo del plexo lumbar por vía posterior: relato de caso Total spinal block after posterior lumbar plexus blockade: case report

    Directory of Open Access Journals (Sweden)

    Leonardo Teixeira Domingues Duarte

    2006-10-01

    anestesiologista conhecimento minucioso da anatomia, treinamento na técnica e vigilância constante.JUSTIFICATIVA Y OBJETIVOS: El bloqueo del plexo lumbar puede ser bastante útil en procedimientos quirúrgicos de la cadera, del muslo y de la rodilla, pero exige práctica del anestesiólogo teniendo en cuenta sus potenciales complicaciones. El presente relato tiene como objetivos presentar un caso de raquianestesia total después del bloqueo del plexo lumbar por la vía posterior y discutir el probable mecanismo fisiopatológico. RELATO DEL CASO: Paciente del sexo masculino, 34 años, 97 kg, estado físico ASA I, programado para artroplastia total de la cadera. Fue realizada anestesia general seguida de bloqueo del plexo lumbar derecho por la vía posterior con auxilio de estimulador de nervio periférico. La aguja fue introducida hasta una profundidad de 8 cm, perpendicular a la piel, y a una distancia de 4 cm de la línea media sobre una línea perpendicular al proceso espinoso de L4. Después de la identificación de respuesta motora en el cuadriceps, la intensidad de la corriente de estimulación se redujo hasta 0,35 mA, siendo entonces administrada ropivacaína a 0,5% (39 mL. Durante la inyección, fueron verificadas contracciones intermitentes del cuadriceps. Después del bloqueo, el paciente evolucionó con apnea, hipotensión arterial y midriasis bilateral. Al final de la cirugía, presentaba bloqueo motor en los dos miembros inferiores que solo mejoró nueve horas después de la realización del bloqueo. En el postoperatorio, el paciente se quejó de dolor intenso, recibiendo alta hospitalaria 12 días después de la cirugía sin anormalidades motora o sensitiva. CONCLUSIONES: La identificación del compartimento del psoas, donde está el plexo lumbar, exige la utilización de intensidad de corriente entre 0,5 e 1 mA. La incidencia de respuesta motora con bajas corrientes puede indicar posicionamiento de la aguja dentro del recubrimiento que envuelve la raíz nerviosa y

  13. Nuclear level density parameter 's dependence on angular momentum

    International Nuclear Information System (INIS)

    Aggarwal, Mamta; Kailas, S.

    2009-01-01

    Nuclear level densities represent a very important ingredient in the statistical Model calculations of nuclear reaction cross sections and help to understand the microscopic features of the excited nuclei. Most of the earlier experimental nuclear level density measurements are confined to low excitation energy and low spin region. A recent experimental investigation of nuclear level densities in high excitation energy and angular momentum domain with some interesting results on inverse level density parameter's dependence on angular momentum in the region around Z=50 has motivated us to study and analyse these experimental results in a microscopic theoretical framework. In the experiment, heavy ion fusion reactions are used to populate the excited and rotating nuclei and measured the α particle evaporation spectra in coincidence with ray multiplicity. Residual nuclei are in the range of Z R 48-55 with excitation energy range 30 to 40 MeV and angular momentum in 10 to 25. The inverse level density parameter K is found to be in the range of 9.0 - 10.5 with some exceptions

  14. Dual electromagnetism: helicity, spin, momentum and angular momentum

    International Nuclear Information System (INIS)

    Bliokh, Konstantin Y; Nori, Franco; Bekshaev, Aleksandr Y

    2013-01-01

    The dual symmetry between electric and magnetic fields is an important intrinsic property of Maxwell equations in free space. This symmetry underlies the conservation of optical helicity and, as we show here, is closely related to the separation of spin and orbital degrees of freedom of light (the helicity flux coincides with the spin angular momentum). However, in the standard field-theory formulation of electromagnetism, the field Lagrangian is not dual symmetric. This leads to problematic dual-asymmetric forms of the canonical energy–momentum, spin and orbital angular-momentum tensors. Moreover, we show that the components of these tensors conflict with the helicity and energy conservation laws. To resolve this discrepancy between the symmetries of the Lagrangian and Maxwell equations, we put forward a dual-symmetric Lagrangian formulation of classical electromagnetism. This dual electromagnetism preserves the form of Maxwell equations, yields meaningful canonical energy–momentum and angular-momentum tensors, and ensures a self-consistent separation of the spin and orbital degrees of freedom. This provides a rigorous derivation of the results suggested in other recent approaches. We make the Noether analysis of the dual symmetry and all the Poincaré symmetries, examine both local and integral conserved quantities and show that only the dual electromagnetism naturally produces a complete self-consistent set of conservation laws. We also discuss the observability of physical quantities distinguishing the standard and dual theories, as well as relations to quantum weak measurements and various optical experiments. (paper)

  15. Mass and Angular Distributions of Charged Dihadron Production

    Energy Technology Data Exchange (ETDEWEB)

    Cummings, Mary Clare [Michigan U.

    1990-01-01

    Experiment 711, conducted at Fermilab. provided a unique handle towards understanding valence quark scattering by studying pairs of single. charged, high transverse momentum hadrons produced in collisions of 800 GeV /c protons on fixed metal targets. The apparatus consisted of a double-arm spectrometer. calorimetrically triggered. with high momentum resolution and a large angular acceptance for all charge states of particle pairs. The experiment was designed to select those hadron pairs that carrted most of the momentum and energy of the underlying scattered quarks and gluons. The charge of such "leading" hadrons is correlated with the charge of the quark that produced it. Quantum Chromodynamics (QCD) assumes that the scattering behavior of quarks ts independent of their charge, or "flavour": Experiment 711 could test this assumption. Tilis dissertation descrtbes the analysis of the mass and angular distributions of hadron pair production for three separate charge states: +-, ++ and --. The angular distributions are found to deviate from theory predictions of flavour symmetry. Also. the mass cross sections indicate ratios of positive to negative hard-scattered particles that are larger than expected from theory. These results could warrant reconsideration of the assumptions and approximations currently made in leading-order QCD calculations.

  16. Fragment Angular Anisotropies for Magic and Non-Magic Nuclei

    Science.gov (United States)

    Behkami, A. N.; Maroofi, S.; Esmailipour, A.; Rasooli, S.

    2007-10-01

    Fission fragment angular distributions have been studied for ^239 Pu (n, f) reaction at several neutron energies. Theoretical calculations have been utilized to determine the variance K0^2 at each bombarding energy from the observed angular anisotropies. The values of K0^2 show sharp rise from a value of 5-6 to about 13 for higher neutron energies. From the position of one of the breaks in the K0^2 value, the magnitude of the pairing gap 2δ in the highly deformed transition nucleus ^240 Pu is estimated to be 2.4 MeV. Fission fragment angular anisotropies from changed particle fission of ^208 Pb, ^209 Bi, ^235U and ^238U at laboratory energy of 43.0 MeV have also been analyzed using the traditional transition state model. In all these calculations, optical model transmission coefficients with spin-orbit interaction have been used. In the case of magic nuclei, ^208Pb and ^209 Bi it is found that the deduced values of K0^2 are very small as compared to their corresponding values for ^235U and ^238U nuclei. This interpreted as due to shell structure, since significant shell and pairing effects appear for the magic nuclei ^208 Pb and ^209 Bi.

  17. Angular dependence of spin-orbit spin-transfer torques

    KAUST Repository

    Lee, Ki-Seung

    2015-04-06

    In ferromagnet/heavy-metal bilayers, an in-plane current gives rise to spin-orbit spin-transfer torque, which is usually decomposed into fieldlike and dampinglike torques. For two-dimensional free-electron and tight-binding models with Rashba spin-orbit coupling, the fieldlike torque acquires nontrivial dependence on the magnetization direction when the Rashba spin-orbit coupling becomes comparable to the exchange interaction. This nontrivial angular dependence of the fieldlike torque is related to the Fermi surface distortion, determined by the ratio of the Rashba spin-orbit coupling to the exchange interaction. On the other hand, the dampinglike torque acquires nontrivial angular dependence when the Rashba spin-orbit coupling is comparable to or stronger than the exchange interaction. It is related to the combined effects of the Fermi surface distortion and the Fermi sea contribution. The angular dependence is consistent with experimental observations and can be important to understand magnetization dynamics induced by spin-orbit spin-transfer torques.

  18. Angular power spectrum in publically released ALICE events

    Science.gov (United States)

    Llanes-Estrada, Felipe J.; Muñoz Martinez, Jose L.

    2018-02-01

    We study the particles emitted in the fireball following a Relativistic Heavy Ion Collision with the traditional angular analysis employed in cosmology and earth sciences, producing Mollweide plots of the number and pt distribution of a few actual, publically released ALICE-collaboration events and calculating their angular power spectrum. We also examine the angular spectrum of a simple two-particle correlation. While this may not be the optimal way of analyzing heavy ion data, our intention is to provide a one to one comparison to analysis in cosmology. With the limited statistics at hand, we do not find evidence for acoustic peaks but a decrease of Cl that is reminiscent of viscous attenuation, but subject to a strong effect from the rapidity acceptance which probably dominates (so we also subtract the m = 0 component). As an exercise, we still extract a characteristic Silk damping length (proportional to the square root of the viscosity over entropy density ratio) to illustrate the method. The absence of acoustic-like peaks is also compatible with a crossover from the QGP to the hadron gas (because a surface tension at domain boundaries would effect a restoring force that could have driven acoustic oscillations). Presently we do not understand a depression of the l = 6 multipole strength; perhaps ALICE could reexamine it with full statistics.

  19. Analysis of angular heat conduction in rotary heat regenerators

    Energy Technology Data Exchange (ETDEWEB)

    Reis, M.C.; Sphaier, L.A. [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Programa de Pos-Graduacao em Engenharia Mecanica. Lab. de Mecanica Teorica e Aplicada], Emails: lasphaier@mec.uff.br, marcelloreis@vm.uff.br

    2010-07-01

    Heat regenerators can be found in a considerable number of engineering applications, and are either used as pair of fixed matrices or as single rotary matrix. The thermal design of these devices is usually done considering models that rely on well-established simplifying assumptions. While most of these assumptions comprise reasonable considerations, some of them could lead to noticeable errors on some occasions. One such assumption is that there is no heat transfer between adjacent channels within the regenerator matrix. While this is quite reasonable for fixed-bed exchangers, this might not be a good choice for rotary exchangers on some occasions. Since rotary matrices can operate between two process streams presenting a large temperature difference between them, a large temperature gradient may develop within the plane normal to the flow direction, especially in the angular direction. This paper proposes a new model for simulating rotary heat regenerators, taking into account this previously unconsidered matrix heat conduction effect. A numerical solution of a test case with angular heat conduction is carried-out. With this solution, a parametric analysis is performed, showing how the effects that gradually increasing the angular heat conduction can affect the temperature distributions within the matrix and regenerator outlet. (author)

  20. A neural circuit architecture for angular integration in Drosophila.

    Science.gov (United States)

    Green, Jonathan; Adachi, Atsuko; Shah, Kunal K; Hirokawa, Jonathan D; Magani, Pablo S; Maimon, Gaby

    2017-06-01

    Many animals keep track of their angular heading over time while navigating through their environment. However, a neural-circuit architecture for computing heading has not been experimentally defined in any species. Here we describe a set of clockwise- and anticlockwise-shifting neurons in the Drosophila central complex whose wiring and physiology provide a means to rotate an angular heading estimate based on the fly's angular velocity. We show that each class of shifting neurons exists in two subtypes, with spatiotemporal activity profiles that suggest different roles for each subtype at the start and end of tethered-walking turns. Shifting neurons are required for the heading system to properly track the fly's heading in the dark, and stimulation of these neurons induces predictable shifts in the heading signal. The central features of this biological circuit are analogous to those of computational models proposed for head-direction cells in rodents and may shed light on how neural systems, in general, perform integration.

  1. GR angular momentum in the quadratic spinor Lagrangian formulation

    Science.gov (United States)

    Li, Siao-Jing

    2016-08-01

    We inquire into the question of whether the quadratic spinor Lagrangian (QSL) formulation can describe the angular momentum for a general-relativistic system. The QSL Hamiltonian has previously been shown to be able to yield an energy-momentum quasilocalization which brings a proof of the positive gravitational energy when the spinor satisfies the conformal Witten equation. After inspection, we find that, under the constraint that the spinor on the asymptotic boundary is a constant, the QSL Hamiltonian is successful in giving an angular momentum quasilocalization. We also make certain the spinor in the Hamiltonian plays the role of a gauge field, a warrant of our permission to impose constraints on the spinor. Then, by some adjustment of the QSL Hamiltonian, we gain a covariant center-of-mass moment quasilocalization only under the condition that the displacement on the asymptotic boundary is a Killing boost vector. We expect the spinor expression will bring a proof of some connection between the gravitational energy and angular momentum.

  2. Angular parallelization of a curvilinear Sn transport theory method

    International Nuclear Information System (INIS)

    Haghighat, A.

    1991-01-01

    In this paper a parallel algorithm for angular domain decomposition (or parallelization) of an r-dependent spherical S n transport theory method is derived. The parallel formulation is incorporated into TWOTRAN-II using the IBM Parallel Fortran compiler and implemented on an IBM 3090/400 (with four processors). The behavior of the parallel algorithm for different physical problems is studied, and it is concluded that the parallel algorithm behaves differently in the presence of a fission source as opposed to the absence of a fission source; this is attributed to the relative contributions of the source and the angular redistribution terms in the S s algorithm. Further, the parallel performance of the algorithm is measured for various problem sizes and different combinations of angular subdomains or processors. Poor parallel efficiencies between ∼35 and 50% are achieved in situations where the relative difference of parallel to serial iterations is ∼50%. High parallel efficiencies between ∼60% and 90% are obtained in situations where the relative difference of parallel to serial iterations is <35%

  3. Angular deflection of rotary nickel titanium files: a comparative study

    Directory of Open Access Journals (Sweden)

    Gianluca Gambarini

    2009-12-01

    Full Text Available A new manufacturing method of twisting nickel titanium wire to produce rotary nickel titanium (RNT files has recently been developed. The aim of the present study was to evaluate whether the new manufacturing process increased the angular deflection of RNT files, by comparing instruments produced using the new manufacturing method (Twisted Files versus instruments produced with the traditional grinding process. Testing was performed on a total of 40 instruments of the following commercially available RNT files: Twisted Files (TF, Profile, K3 and M2 (NRT. All instruments tested had the same dimensions (taper 0.06 and tip size 25. Test procedures strictly followed ISO 3630-1. Data were collected and statistically analyzed by means ANOVA test. The results showed that TF demonstrated significantly higher average angular deflection levels (P<0.05, than RNT manufactured by a grinding process. Since angular deflection represent the amount of rotation (and consequently deformation that a RNT file can withstand before torsional failure, such a significant improvement is a favorable property for the clinical use of the tested RNT files.

  4. Angular glint effects generation for false naval target verisimility requirements

    International Nuclear Information System (INIS)

    Kostis, Theodoros G; Galanis, Konstantinos G; Katsikas, Sokratis K

    2009-01-01

    A stimulating problem in the generation of coherent countermeasures for high range resolution radar systems is the inclusion of angular glint effects in the preparation of the false target mask. Since angular glint is representative of extended naval targets, this inclusion increases the credibility factor of the decoy playback signal at the adversary radar-operator station. In this paper, the ability of an interferometric inverse synthetic aperture radar (InISAR) simulator to provide a proof of concept towards the clarification of this challenging task is ascertained. The solution consists of three novel vector representations of the generated data, which are proven to behave according to the laws of physics governing the glint phenomenon. The first depiction is the angular glint injection at the target which is followed by the representation of the wavefront distortion at the radar. A value-added time procession integration of the target in pure roll motion provides an expected by ISAR theory side-view image of the naval extended false target. The effectiveness of the proposed approach through verification and validation of the results by using the method of pictorial evidence is established. A final argument is raised on the usage of this software tool for actual obfuscation and deception actions for air defence at sea applications

  5. Impacto sobre la morbilidad y mortalidad de la terapia farmacol??gica empleada durante las primeras 24 horas del s??ndrome coronario agudo con elevaci??n del segmento ST complicado con parada cardiorrespiratoria

    OpenAIRE

    Aguilar Cruz, Iv??n

    2012-01-01

    INTRODUCCI??N El infarto agudo de miocardio con elevaci??n del segmento ST (IAMCEST) es una de las principales causas de morbimortalidad en la actualidad, una de las bases de su tratamiento es la reperfusi??n farmacol??gica mediante los agentes trombol??ticos. En aquellas situaciones donde el IAMCEST sufre como complicaci??n una parada cardiorrespiratoria (PCR), administrar f??rmacos trombol??ticos como tratamiento es controvertido. OBJETIVOS 1. Determinar el efecto del tratamient...

  6. Evaluación económica del stent medicado vs. convencional para pacientes con infarto agudo de miocardio con elevación del ST en Colombia

    Directory of Open Access Journals (Sweden)

    Mateo Ceballos

    2014-11-01

    Conclusiones: El stent medicado con sirolimus no es costo-efectivo para pacientes con infarto agudo de miocardio con elevación del ST en Colombia. Se recomienda mayor investigación futura sobre la probabilidad de muerte y trombosis muy tardía del stent, así como en subgrupos específicos de pacientes y stents medicados de segunda generación.

  7. Angular filter refractometry analysis using simulated annealing [An improved method for characterizing plasma density profiles using angular filter refractometry

    International Nuclear Information System (INIS)

    Angland, P.; Haberberger, D.; Ivancic, S. T.; Froula, D. H.

    2017-01-01

    Here, a new method of analysis for angular filter refractometry images was developed to characterize laser-produced, long-scale-length plasmas using an annealing algorithm to iterative converge upon a solution. Angular filter refractometry (AFR) is a novel technique used to characterize the density pro files of laser-produced, long-scale-length plasmas. A synthetic AFR image is constructed by a user-defined density profile described by eight parameters, and the algorithm systematically alters the parameters until the comparison is optimized. The optimization and statistical uncertainty calculation is based on a minimization of the χ2 test statistic. The algorithm was successfully applied to experimental data of plasma expanding from a flat, laser-irradiated target, resulting in average uncertainty in the density profile of 5-10% in the region of interest.

  8. Energy and angular dependence of thermoluminescent materials to beta monitoring; Dependencia energetica e angular de materiais termoluminescentes para monitoracao beta

    Energy Technology Data Exchange (ETDEWEB)

    Cecatti, Sonia Garcia Pereira; Caldas, Linda V.E. [Instituto de Pesquisas Energeticas e Nucleares, Sao Paulo, SP (Brazil)]. E-mail: scecatti@fundacentro.gov.br

    2006-11-15

    Energy and angular dependences of different thermoluminescent materials were studied with the objective to verify which type of detector would be the most appropriate for beta monitoring of workers. Three types of CaSO{sub 4}:Dy + teflon pellets were studied. The energy dependence was evaluated using standard beta radiation sources ({sup 147} Pm, {sup 2}''0{sup 4} Tl and {sup 90} Sr+{sup 90} Y). For the angular dependence study, the pellets were exposed to beta radiation of the {sup 9}'0 Sr+{sup 90} Y source, varying the incidence angle between 0 deg C and 90 deg C. In relation to the studied characteristics, the CaSO{sub 4}:Dy + 10% C dosimeters were the most adequate for use in beta monitoring of workers. (author)

  9. Robust flight control using incremental nonlinear dynamic inversion and angular acceleration prediction

    OpenAIRE

    Sieberling, S.; Chu, Q.P.; Mulder, J.A.

    2010-01-01

    This paper presents a flight control strategy based on nonlinear dynamic inversion. The approach presented, called incremental nonlinear dynamic inversion, uses properties of general mechanical systems and nonlinear dynamic inversion by feeding back angular accelerations. Theoretically, feedback of angular accelerations eliminates sensitivity to model mismatch, greatly increasing the robust performance of the system compared with conventional nonlinear dynamic inversion. However, angular acce...

  10. Angular Random Walk Estimation of a Time-Domain Switching Micromachined Gyroscope

    Science.gov (United States)

    2016-10-19

    TECHNICAL DOCUMENT 3308 September 2016 Angular Random Walk Estimation of a Time-Domain Switching Micromachined Gyroscope Andrew B. Sabater Paul...angular random walk (ARW), bias instability, and scale factor instability. While there are methods to address issues with bias and scale factor...8 4. ANGULAR RANDOM WALK CHARACTERIZATION

  11. Is angular momentum in the horizontal plane during gait a controlled variable?

    NARCIS (Netherlands)

    Thielemans, V.; Meyns, P.; Bruijn, S.M.

    2014-01-01

    It has been suggested that angular momentum in the horizontal plane during human gait is controlled (i.e., kept minimal). However, this has not been explored in conditions when angular momentum of different segments is manipulated explicitly. In order to examine the behavior of angular momentum, 12

  12. Linear and angular control of circular walking in healthy older adults and subjects with cerebellar ataxia.

    Science.gov (United States)

    Goodworth, Adam D; Paquette, Caroline; Jones, Geoffrey Melvill; Block, Edward W; Fletcher, William A; Hu, Bin; Horak, Fay B

    2012-05-01

    Linear and angular control of trunk and leg motion during curvilinear navigation was investigated in subjects with cerebellar ataxia and age-matched control subjects. Subjects walked with eyes open around a 1.2-m circle. The relationship of linear to angular motion was quantified by determining the ratios of trunk linear velocity to trunk angular velocity and foot linear position to foot angular position. Errors in walking radius (the ratio of linear to angular motion) also were quantified continuously during the circular walk. Relative variability of linear and angular measures was compared using coefficients of variation (CoV). Patterns of variability were compared using power spectral analysis for the trunk and auto-covariance analysis for the feet. Errors in radius were significantly increased in patients with cerebellar damage as compared to controls. Cerebellar subjects had significantly larger CoV of feet and trunk in angular, but not linear, motion. Control subjects also showed larger CoV in angular compared to linear motion of the feet and trunk. Angular and linear components of stepping differed in that angular, but not linear, foot placement had a negative correlation from one stride to the next. Thus, walking in a circle was associated with more, and a different type of, variability in angular compared to linear motion. Results are consistent with increased difficulty of, and role of the cerebellum in, control of angular trunk and foot motion for curvilinear locomotion.

  13. Angular kyphosis as an indicator of the prevalence of Pott's disease ...

    African Journals Online (AJOL)

    'rounded' or 'angular'. Rounded kyphosis is common and includes physiological, osteoporotic, postural and. Scheuermann's kyphoses. Angular kyphosis, in contrast, is characterised by an abrupt increase in the dorsal angulation of the spine within the span of a few vertebrae. Angular. Division of Orthopaedics, University of ...

  14. Singularity in the Laboratory Frame Angular Distribution Derived in Two-Body Scattering Theory

    Science.gov (United States)

    Dick, Frank; Norbury, John W.

    2009-01-01

    The laboratory (lab) frame angular distribution derived in two-body scattering theory exhibits a singularity at the maximum lab scattering angle. The singularity appears in the kinematic factor that transforms the centre of momentum (cm) angular distribution to the lab angular distribution. We show that it is caused in the transformation by the…

  15. Dynamical evolution of angular momentum in damped nuclear reactions (I). Accumulation of angular momentum by nucleon transfer

    Science.gov (United States)

    Døssing, Thomas; Randrup, Jørgen

    1985-02-01

    The dynamical accumulation of angular momentum in the course of a damped nuclear reaction is studied within the framework of the nucleon exchange transport model. The dinuclear spin distribution is described by the mean values and the covariances of the two prefragment spins and their orbital angular momentum overlineL. Using an intrinsic coordinate system aligned with the fluctuating direction of overlineL, the equations of motion for the spin distribution are derived and discussed. The ultimate transformation to an externally defined reference frame is also discussed. The evolution of other observables and their coupling to the spin variables are included and, by integrating conditional distributions over all impact parameters, results are obtained for differential cross sections corresponding to a specified loss of relative kinetic energy. The characteristic features of the evolution of the spin distribution is discussed in detail. First the stationary solution of the equations of motion is considered and its different appearance in the various relevant coordinate systems is exhibited. The dynamical evolution is discussed in terms of the time-dependent relaxation times associated with the six different intrinsic modes of rotation in the disphere. Due to the relative smallness of the window size the positive modes will dominate (for not too long times), resulting in a predominantly positive correlation between the fragment spin fluctuations. Illustrative applications to cases of experimental interest are made and a critical discussion is given of other models addressing angular momentum in damped nuclear reactions.

  16. Energy and angular dependence of thermoluminescent materials for beta monitoring; Dependencia energetica e angular de materiais termoluminescentes para monitoracao beta

    Energy Technology Data Exchange (ETDEWEB)

    Cecatti, S.G.P. [Fundacao Jorge Duprat Figueiredo de Seguranca e Medicina do Trabalho (FUNDACENTRO), Sao Paulo, SP (Brazil); Caldas, L.V.E. [Instituto de Pesquisas Energeticas e Nucleares, (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2004-07-01

    This work has as objective the study of the energy and angular dependence of different thermoluminescent (TL) materials for an appropriate choice of the material to be used for beta monitoring of workers. Three types of CaSO{sub 4}:Dy + Teflon pellets were studied. The energy dependence was verified using standard sources of beta radiation ({sup 147}Pm, {sup 204}Tl and {sup 90}Sr + {sup 90}Y). For the angular dependence study the pellets were irradiated with beta radiation of the {sup 90}Sr + {sup 90}Y source, varying the incidence angle between 0 deg C and 90 deg C. The CaSO{sub 4}: Dy (50 mg) and of CaSO{sub 4}:Dy (20 mg) pellets presented practically the same high energy dependence, while the CaSO{sub 4}:Dy + 10% C pellets presented a dependence with the energy of 60% in the studied interval. The TL response of the three materials presented an accentuated angular dependence starting from 45 deg C. The dosimeters of CaSO{sub 4}:Dy + 10% C showed to be the most adequate for use in beta monitoring of workers, in relation to the studied characteristics. (author)

  17. Demoras en la realización de la angioplastia primaria en los pacientes trasladados con infarto agudo de miocardio: un problema médico-asistencial

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    Rodrigo Blanco

    2009-01-01

    Full Text Available IntroducciónEn el infarto agudo de miocardio (IAM está comprobado que cuanto más tempranamente se realice la reperfusión, mejores serán sus resultados a corto y a largo plazos, por lo que el tiempo entre el inicio de los síntomas y la reperfusión coronaria es un elemento de gran importancia en la estrategia de su tratamiento. Este lapso se encuentra conformado por dos períodos: “tiempo paciente” y “tiempo médico-asistencial”. En la angioplastia primaria, el análisis de estos tiempos y sus intervalos es el paso obligado para lograr una reducción de la demora a la reperfusión.ObjetivosAnalizar los tiempos en cada etapa del proceso traslado-realización de una angioplastia, ya sea primaria o de rescate, en pacientes con infarto agudo de miocardio con elevación del segmento ST (IAMEST que debieron ser trasladados desde un hospital derivador a un centro de referencia en el ámbito de la ciudad de Buenos Aires para someterse al procedimiento, como primer paso para un programa de optimización de los tiempos.Material y métodosEstudio prospectivo, observacional, de pacientes derivados al Hospital General de Agudos “Dr. Cosme Argerich” con diagnóstico de IAMEST e indicación de ATC. Se analizaron los tiempos parciales desde el inicio de los síntomas hasta la reperfusión coronaria, para lo cual se consideró “tiempo paciente” desde el inicio de los síntomas hasta la llegada al hospital derivador y “tiempo médico-asistencial” al comprendido entre la llegada al hospital derivador y la insuflación del balón.ResultadosSe incluyeron 313 pacientes, 225 (72% con angioplastia primaria (ATCP y 88 (28% con angioplastia de rescate (ATCR. Las medianas (cuartiles de tiempo en ATCP fueron: tiempo paciente: 90’ (40-240, llegada al hospital derivador-llamada al Equipo de Hemodinamia Cardiovascular de Urgencia (EHCU: 80’ (35-150, llamada EHCU-ingreso hemodinamia: 75’ (55-100, ingreso hemodinamia-balón: 35’ (23-52, tiempo m

  18. Respostas fisiológicas ao exercício agudo em ratos obesos tratados com metformina Physiological responses to intense exercise in obese rats treated with metformin

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    Gustavo Gomes de Araujo

    2007-12-01

    Full Text Available O objetivo do presente estudo foi investigar as respostas fisiológicas ao exercício agudo em ratos Wistar obesos, tratados com metformina. Os animais receberam injeção subcutânea de glutamato monossódico (4mg/g peso corporal, para indução da obesidade. Os animais foram divididos em 4 grupos, conforme o tratamento recebido: obesos controles (OC; obesos metformina (OM; obesos controles exercitados (OCE e obesos metformina exercitados (OME. Foram analisados, antes e após uma sessão de exercício agudo: glicose sérica (mg/dL, triglicerídeos (g/100g, colesterol total (mg/dL e hematócrito (%. Os valores de glicose sérica e colesterol total foram reduzidos significativamente no grupo controle exercitado (OCE - 68,4 ± 14,7 e 70,8 ± 18,3 em comparação ao grupo controle sedentário (OC - 83,6 ± 12,8 e 91,3 ± 9,6. A administração de metformina isoladamente diminuiu a concentração de glicose de 83,6 ± 12,8 (OC para 70,8 ± 5,9 (OM. Por outro lado, a associação de metformina com exercício aumentou a disponibilidade de triacilgliceróis livres após a atividade (OM - 166,6 ± 11,3, OME - 184,0 ± 4,3. Em conclusão o programa de intervenção utilizado (exercício físico agudo mostrou-se eficiente na homeostasia glicêmica, bem como, nos níveis circulantes de lipídios em ratos obesos tratados com metformina.The purpose of the present study was to investigate the physiological responses to intense exercise in obese Wistar rats treated with metformin. To induce obesity, all animals were infused with monosodic glutamate (4 mg/g of body weight via subcutaneous injection. The rats were divided in 4 groups according to the received treatment: obese control (OC; obese metformin ( OM; obese control exercise (OCE and obese metformin exercise (OME. Before and after one session of intense exercise the following parameters were measured: serum glucose (mg/dl, triglycerides (g/100g, total cholesterol (mg/dl and haematocrit (%. The values of

  19. Bloqueio pleural bilateral: analgesia e funções pulmonares em pós-operatório de laparotomias medianas Bloqueo pleural bilateral: analgesia y funciones pulmonares en pós-operatorio de laparotomias medianas Bilateral pleural block: analgesia and pulmonary functions in postoperative of median laparotomies

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    Karl Otto Geier

    2004-08-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Não obstante o bloqueio pleural ter sido convertido quase numa panacéia analgésica, resultados contraditórios foram publicados. O objetivo deste estudo foi observar o desempenho analgésico e espirométrico das funções pulmonares no pós-operatório imediato de 21 pacientes com o bloqueio pleural bilateral em laparotomias medianas de urgência. MÉTODO: Bloqueio pleural bilateral foi realizado em decúbito dorsal horizontal em 21 pacientes com 20 ml de bupivacaína a 0,375% com adrenalina a 1:400.000 administrados por cateter em cada hemitórax durante o pós-operatório imediato. Soluções aleatórias de bupivacaína e de solução fisiológica foram administradas por residentes ou enfermeiras que desconheciam o conteúdo das seringas, e seus desfechos analgésicos avaliados de acordo com a escala de dor Prince Henry ao comparar os valores pré e pós-bloqueio pleural bilateral. Em função da dor pós-operatória, testes espirométricos das funções pulmonares também foram determinados mediante espirômetro portátil. RESULTADOS: Analgesia pós-operatória, com duração média de 247,75 ± 75 minutos foi constatada em todos os pacientes com a bupivacaína, embora tenha persistido dor residual de menor intensidade na região suprapúbica em cinco pacientes (8% e em dois pacientes na apófise xifóide (3,2%. Nenhum efeito analgésico foi obtido com solução fisiológica. Face à dor pós-operatória, as funções pulmonares, avaliadas antes e após os bloqueios, registraram melhora com a bupivacaína na CVF (p JUSTIFICATIVA Y OBJETIVOS: No obstante el bloqueo pleural haber sido convertido casi en una panacea analgésica, fueron publicados resultados contradictorios. El objetivo de este estudio fue observar el desempeño analgésico y espirométrico de las funciones pulmonares en el pós-operatorio inmediato de 21 pacientes con el bloqueo pleural bilateral en laparotomias medianas de urgencia. M

  20. Síndrome de Tako-Tsubo em decorrência de bloqueio neuromuscular residual: relato de caso Síndrome de Tako-Tsubo como consecuencia de bloqueo neuromuscular residual: relato de caso Tako-Tsubo syndrome secondary to residual neuromuscular blockade: case report

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    Marcos Guilherme Cunha Cruvinel

    2008-12-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A síndrome de Tako-Tsubo é uma complicação pós-operatória rara, com mortalidade em torno de 5%. O objetivo deste relato é apresentar o bloqueio neuromuscular residual como fator desencadeante da referida síndrome, discutir sobre a mesma e alertar sobre o bloqueio neuromuscular residual. RELATO DO CASO: Paciente do sexo feminino, 61 anos, estado físico ASA I, submetida à anestesia geral associada a bloqueio paravertebral cervical para reparo artroscópico de lesão de manguito rotator. Após extubação foi evidenciado bloqueio neuromuscular residual por meio do exame clínico. Na sala de recuperação pós-anestésica evoluiu com sonolência, taquicardia, hipertensão arterial e acidose respiratória grave. Após a reintubação, evoluiu com parada cardíaca em atividade elétrica sem pulso, revertida com adrenalina e massagem cardíaca externa. Apresentou no pós-operatório elevação de segmento ST, aumento de troponina e acinesia de segmento médio-apical de ventrículo esquerdo com fração de ejeção estimada em 30%. A cineangiocoronariografia mostrou coronárias isentas de ateromatose significativa e grave comprometimento da função sistólica com acinesia inferior e ântero-septo-apical com hipercontratilidade compensatória de suas porções basais. Com o tratamento instituído houve recuperação funcional completa. CONCLUSÕES: O bloqueio neuromuscular residual associado à paralisia diafragmática e possível atelectasia pulmonar levando a insuficiência respiratória, hipercapnia e descarga adrenérgica foram os fatores desencadeantes da síndrome de Tako-Tsubo com sua grave repercussão clínica.JUSTIFICATIVA Y OBJETIVOS: El Síndrome de Tako-Tsubo es una complicación postoperatoria rara con una mortalidad en torno de un 5%. El objetivo de este relato es presentar el bloqueo neuromuscular residual como factor desencadenante del referido síndrome, discutir sobre él y alertar sobre el bloqueo