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Sample records for rn con hipotiroidismo

  1. Enfermedad tiroidea autoimnune en pacientes con bocio y/o hipotiroidismo

    OpenAIRE

    Lastra, Guido; Caicedo, Henry

    2011-01-01

    Objetivos: Determinar la presencia de anticuerpos antitiroideos en pacientes con hipofunción tiroidea subclínica o franca con o sin bocio. Materiales: Se estudiaron 59 pacientes que presentaban bocio, y/o hipofunción tiroidea dada por una TSH sérica basal mayor de 5.0 mU/L, con hormonas tiroideas normales: Hipotiroidismo Subclínico; o con niveles subnormales de hormonas tiroideas: Hipotiroidismo franco. Resultados: EI grupo con mayor porcentaje de pacientes con 40.70% fue el de bocio hipofunc...

  2. Hipotiroidismo primario en pacientes con síndrome de Down

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    Marlen Rivero González

    2012-06-01

    Full Text Available Introducción: el hipotiroidismo es el cuadro clínico resultante de una disminución de la actividad biológica de las hormonas tiroideas ocasionada por un déficit en la producción o utilización de estas. Su asociación con el síndrome de Down ha sido previamente descrita por otros autores, pero hay pocos estudios sobre la frecuencia con que se relacionan ambas entidades en Cuba, y la forma clínica en que se presenta el hipotiroidismo en estos pacientes. Objetivo: evaluar la asociación del síndrome de Down con el hipotiroidismo en pacientes atendidos en nuestro servicio en el período comprendido de enero de 2010 a diciembre del mismo año. Métodos: se estudiaron 24 pacientes con diagnóstico de síndrome de Down, entre 3 y 7 años de edad, en la consulta de Endocrinología del Hospital Pediátrico "William Soler". Resultados: se encontró que en el 100 % de los pacientes estudiados (24 se presentaban cifras elevadas de hormona tirotropa hipofisiaria, retraso de la edad ósea (18 para un 75 %, y baja talla < 3 percentil (4 para un 16,6 %. Conclusiones: el hipotiroidismo es una entidad frecuentemente asociada con el síndrome de Down, por lo que la detección y el tratamiento precoz en estos niños es de vital importancia para mejorar su desarrollo cognitivo y crecimiento integral.

  3. Hipotiroidismo primario en pacientes con síndrome de Down Primary hypothyroidism in patients with Down syndrome

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    Marlen Rivero González

    2012-06-01

    Full Text Available Introducción: el hipotiroidismo es el cuadro clínico resultante de una disminución de la actividad biológica de las hormonas tiroideas ocasionada por un déficit en la producción o utilización de estas. Su asociación con el síndrome de Down ha sido previamente descrita por otros autores, pero hay pocos estudios sobre la frecuencia con que se relacionan ambas entidades en Cuba, y la forma clínica en que se presenta el hipotiroidismo en estos pacientes. Objetivo: evaluar la asociación del síndrome de Down con el hipotiroidismo en pacientes atendidos en nuestro servicio en el período comprendido de enero de 2010 a diciembre del mismo año. Métodos: se estudiaron 24 pacientes con diagnóstico de síndrome de Down, entre 3 y 7 años de edad, en la consulta de Endocrinología del Hospital Pediátrico "William Soler". Resultados: se encontró que en el 100 % de los pacientes estudiados (24 se presentaban cifras elevadas de hormona tirotropa hipofisiaria, retraso de la edad ósea (18 para un 75 %, y baja talla Introduction: hypothyroidism is the resulting clinical picture of a reduction in the biological activity of thyroid hormones due to their low production or little use. Its association with Down syndrome has been previously described by other authors; however, few studies on the frequency of association of both entities in Cuba and on the clinical form of hypothyroidism in these patients have been conducted. Objectives: to evaluate the association of Down syndrome and hypothyroidism in patients seen at our service from January to December 2011. Methods: twenty four patients with Down syndrome, aged 3 to 7 years, were attended at the endocrinology service of "William Soler" pediatric hospital. Results: it was found that all these patients exhibited high values of hypophysial thyrotrop hormone, 18 had osseous age retardation (75 % and 4 showed low size of less than 3 percentiles (16.6 %. Conclusions: hypothyroidism is a frequent disease

  4. Prevalencia de hipotiroidismo y su asociación con factores de riesgo cardiometabólicos en mujeres adultas argentinas

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    Lorena Rosalía Belén

    2015-10-01

    Full Text Available Introducción: El hipotiroidismo se asocia con factores de riesgo cardiometabólicos (FRC además de la edad y del sexo femenino. El principal objetivo fue conocer la prevalencia de hipotiroidismo y su asociación con FRC en mujeres adultas concurrentes a un Centro de Endocrinología de la Ciudad Autónoma de Buenos Aires, Argentina.Material y Métodos: Diseño transversal y observacional en muestra no probabilística de 316 mujeres adultas (40 a 65 años, categorizadas en hipotiroideas controladas con tratamiento farmacológico y eutiroideas. Variables: Se estudiaron los siguientes FRC: Índice Masa Corporal (IMC, <25kg/m2 y ≥25,0Kg/m2; circunferencia cintura (CC ≤88cm y >88cm; etapa biológica (premenopausia y posmenopausia, tabaquismo, sedentarismo; perfil lipídico alterado (ColT>200mg/dl; LDL-c>130mg/dl; Tg>150mg/dl; HDL-c<40mg/dl; HTA≥120/80mmHg y glucemia basal aumentada >100mg/dl. Estadística con SPSS 15.0 estableciendo medidas de tendencia central, ANOVA y OR con intervalos de confianza 95% (IC y diferencia de proporciones con valor p<0,05.Resultados: 46,2% hipotiroideas controladas y 53,8% eutiroideas; 64,2% posmenopáusicas; 68% con sobrepeso u obesidad y 45,2% con CC aumentada. La edad fue similar en ambos grupos: 53,3 (DS=6,4 años hipotiroideas y 53,9 (DS=6,6 años eutiroideas. Sedentarismo fue el FRC más prevalente en ambos grupos. Las hipotiroideas presentaron más riesgo de IMC aumentado (OR=0,36 IC95%=0,21-0,59; p=0,0001 y CC alterada (OR=0,53 IC95%=0,34-0,84; p=0,006 que las eutiroideas.Conclusiones: La prevalencia de hipotiroidismo se presentó aproximadamente en la mitad de la muestra. El estado nutricional alterado fue el único FRC asociado significativamente con el hipotiroidismo.

  5. Características neuropsicológicas del niño preescolar con Hipotiroidismo Congénito en la Provincia de Cienfuegos.

    OpenAIRE

    Yaser Ramírez B; Hussimy Marchena M.

    2014-01-01

    El hipotiroidismo congénito es la causa más frecuente de retraso mental previsible. El diagnóstico clínico en las primeras etapas de la vida es muy impreciso, de ahí que se hayan puesto en marcha programas de diagnóstico y tratamiento precoz cuyo objetivo fundamental es un desarrollo neurocognitivo y su nivel optimización. Método y objetivos: Con el objetivo de evaluar el perfil neurocognitivo en niños hipotiroideos en edad preescolar se realizó un estudio descriptivo prospectivo que incluyó ...

  6. Características neuropsicológicas del niño preescolar con Hipotiroidismo Congénito en la Provincia de Cienfuegos.

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    Yaser Ramírez B

    2014-07-01

    Full Text Available El hipotiroidismo congénito es la causa más frecuente de retraso mental previsible. El diagnóstico clínico en las primeras etapas de la vida es muy impreciso, de ahí que se hayan puesto en marcha programas de diagnóstico y tratamiento precoz cuyo objetivo fundamental es un desarrollo neurocognitivo y su nivel optimización. Método y objetivos: Con el objetivo de evaluar el perfil neurocognitivo en niños hipotiroideos en edad preescolar se realizó un estudio descriptivo prospectivo que incluyó a los pacientes en edades entre 4 a 6 años con seguimiento en consulta de hipotiroidismo congénito del Hospital Pediátrico “Paquito González Cueto” de Cienfuegos. Solo existían 6 niños a los cuales se les aplicó la batería neuropsicológica Luria Inicial, rendimiento intelectual, escala de comportamiento y potenciales evocados. Resultados: Se constató que estos pacientes presentan limitaciones en el sistema óptico- espacial y en el sistema de control inhibitorio. El primero afecta el desarrollo de la orientación espacial del acto motor y la percepción visual con detalles y el otro sistema afecta el control atencional en la edad y conlleva a dificultades para seguir instrucciones verbales. Recomendación: El seguimiento y la vigilancia del neurodesarrollo permiten ir explicando las alteraciones sistemáticas que se presentan en estos niños y hace posible una intervención temprana a favor del posterior proceso de escolarización.

  7. Factores de riesgo cardiovascular en pacientes con hipotiroidismo subclínico Cardiovascular Risk Factors in Patients with Subclinical Hypothiroidism

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    S De Pedro

    2012-12-01

    Full Text Available Introducción: Existen discrepancias importantes en los datos epidemiológicos acerca del riesgo cardiovascular (RCV en hipotiroidismo subclínico (HS. Objetivos: Estudiar la asociación entre distintos parámetros clínicos y bioquímicos indicadores de RCV con la presencia de HS. Material y Métodos: Estudio casos-controles con criterio de evaluación observacional, epidemiológico, sin intervención. Se definió como HS a los pacientes que presentaron un valor de la hormona estimulante de tiroides (TSH mayor de 4 uUI /mL con niveles de tiroxina libre (T4L en el rango de referencia. Se consignó edad y sexo de los individuos, peso, índice de masa corporal (IMC, circunferencia de la cintura (CC y la tensión arterial. Se realizaron hemograma, recuento de plaquetas, colesterol total (CT, colesterol HDL (C-HDL, colesterol LDL (C-LDL, triglicéridos (TG, glucemia, insulinemia, TSH, T4L, anticuerpos antitiroperoxidasa (aTPO. Resultados: Se estudiaron 78 pacientes [48 pacientes control (C y 30 con HS]. La edad de los C fue de 38 ± 12 años y 38 ± 13 años para HS, el IMC fue de 30 ± 6 kg/m2 para C y 30 ± 7 kg/m2 para HS, la CC 103 ± 16 cm para C y 102 ± 17 cm para HS. No se detectaron diferencias estadísticamente significativas de TA (p = 0,426; HOMA (p = 0,211, ni del nivel de las variables lipídicas. Se observaron diferencias estadísticamente significativas de leucocitos (p = 0,009 y plaquetas (p = 0,044. Conclusiones: En los pacientes con HS se observó un recuento de leucocitos y plaquetas más elevado que en los controles. Los niveles de CT, C-LDL, C no-HDL y TG fueron ligeramente superiores en los pacientes con HS respecto de los C, si bien no se detectaron diferencias estadísticamente significativas. Los autores declaran no poseer conflictos de interés.Abstract Introduction: there are significant discrepancies in epidemiological data about cardiovascular risk in subclinical hypothyroidism (SH. Objective: to study the association

  8. Hipotiroidismo congénito

    OpenAIRE

    María Fernanda Castilla Peón

    2015-01-01

    El hipotiroidismo congénito (HC) es una causa prevenible de retraso mental, por lo que es de suma importancia que el diagnóstico y tratamiento oportunos sean realizados por el médico de primer contacto. El tamizaje para HC se debe realizar entre el segundo y quinto días de vida, con sangre capilar mediante la punción del talón. Debe confirmarse mediante el perfil tiroideo en sangre venosa. La etiología más frecuente es la disgenesia tiroidea, la cual se identifica con gamagrafía tiroidea a...

  9. HIPOTIROIDISMO CANINO, PRESENTACION DE UN CASO ATIPICO

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    Juan Carlos Ballut P

    2004-12-01

    Full Text Available Este trabajo describe las características clínicas de un caso de hipotiroidismo atípico, catalogado como de presentaciónoculta, caracterizado por signos relacionados con miopatía, neuropatía, deterioro del estado mental, sangrado

  10. Atención sostenida en niños en edad escolar con hipotiroidismo congénito Sustained attention in school aged children with congenital hypothyroidism

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    Ana Olivares Torres

    2004-08-01

    Full Text Available Los programas de diagnóstico precoz de hipotiroidismo congénito han demostrado la eficaz prevención del retraso mental. El problema científico actual consiste en la identificación de trastornos cognitivos sutiles que persisten a pesar del tratamiento precoz. Resulta favorable contar con procedimientos diagnósticos específicos diseñados para esto. Diferentes métodos indirectos sugieren que aunque se tengan cocientes de inteligencia dentro de rangos normales, el proceso de mantener la atención durante un intervalo de tiempo prolongado en estos niños se encuentra ligeramente comprometido. Este estudio tiene el objetivo de validar la eficiencia de una batería computadorizada SESH 1.O (sistema para evaluación y seguimiento de pacientes hipotiroideos para la detección de trastornos en niños con hipotiroidismo congénito (HC. Se estudiaron 3 grupos de niños: trastornos del aprendizaje (TA, hipotiroidismo congénito (HC y controles sanos (CS. Los resultados muestran que los valores de los niños del grupo HC se mantienen en un nivel intermedio entre los CS y los TA, lo que se interpreta como la existencia de un déficit subclínico en la atención sostenida. La capacidad discriminatoria del software empleado permite su incorporación inmediata a la práctica clínica del programa nacional de diagnóstico precoz de HC como un medio complementario de alta utilidad.The programs of early diagnosis of congenital hypothyroidism have proved the efficient prevention of mental retardation. The current scientific problem is the identification of subtle cognitive disorders persisting in spite of early treatment. It is convenient to have specific diagnostic procedures designed to this end. Different indirect methods suggest that even with intelligence quotients within the normal ranges, the process of maintaining attention during a prolonged time in these children is mildly compromised. This study is aimed at validating the efficiency of a SESH 1

  11. Hipotiroidismo oculto en adultos mayores de Lima – Perú.

    OpenAIRE

    CAMPOS LEON, Michael; CASADO CORNEJO, Tomás; SOLIS VILLANUEVA, Jose

    2013-01-01

    La prevalencia de hipotiroidismo aumenta con el envejecimiento y clínicamente es muy difícil de diagnosticarlo en los adultos mayores. En este trabajo investigamos la prevalencia y etiología de hipotiroidismo oculto en el grupo de 190 gerontes supuestamente eutiroideos de Lima. Veinte pacientes (10.47%) tuvieron niveles elevados de tirotrofina: 2 de ellos (1.04%) tenían hipotiroidismo “clásico “ y 18(9.42%) hipotiroidismo “subclínico” (con valores normales de T4 libre pero significativamente ...

  12. Mineralización ósea en niños y adolescentes con hipotiroidismo congénito Bone mineralization in children and adolescents presenting with a congenital hypothyroidism

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    Kesia Granela Cortiñas

    2011-08-01

    Full Text Available Introducción: en el hipotiroidismo congénito la mineralización ósea puede afectarse por la enfermedad o por los efectos del tratamiento con hormonas tiroideas. Objetivo: determinar en pacientes con hipotiroidismo congénito la mineralización ósea. Métodos: se realizó estudio descriptivo transversal pareado, en niños cubanos con hipotiroidismo congénito (n=67 y un grupo control (n=67. Se analizó la mineralización ósea por densitometría, y se tuvo en cuenta la edad, el sexo, la maduración ósea y sexual, el diagnóstico hormonal y el tratamiento. Se aplicaron intervalos de confianza (95 %, análisis de varianza y correlación con significación. Resultados: la densidad, el contenido mineral óseo y el z-score en niños cubanos con hipotiroidismo congénito, y el grupo control no fue diferente significativamente (p=0,466; 0,155; 0,416 respectivamente. Estimaciones de asociación de mineralización ósea por edad mostró diferencia significativa en la densidad mineral ósea y contenido mineral óseo (p=0,000 para ambos grupos, y el z-score solo para los enfermos. La mineralización ósea fue significativa en la dosis promedio con levotiroxina en la segunda y tercera fase ósea, y en el tiempo de tratamiento. En el hipotiroidismo congénito permanente hubo correlación con el diagnóstico hormonal y el tiempo de tratamiento (p=0,000. Conclusiones: la mineralización ósea es homogénea en ambos grupos. La densidad y el contenido mineral óseo en niños cubanos con hipotiroidismo congénito y el grupo control se asocian con la edad, y son independientes del sexo. El z-score en pacientes con hipotiroidismo congénito sufre variación con la edad, y es independiente al sexo en ambos grupos. La densidad y el contenido mineral óseo varían en niños con hipotiroidismo congénito.Introduction: in the case of the congenital hypothyroidism the bone mineralization may be affected by disease or by the effects of the thyroid hormones treatment

  13. Hipotiroidismo no idoso

    OpenAIRE

    Gonçalves, António Amadeu Valentim

    2015-01-01

    Trabalho final de mestrado integrado em Medicina (Geriatria), apresentado á Faculdade de Medicina da Universidade de Coimbra Introdução: As doenças da tiroide são muito prevalentes, ocorrendo mais frequentemente em mulheres idosas. Como os sintomas associados à disfunção tiroideia são semelhantes aos que ocorrem no envelhecimento, bons métodos de diagnóstico para o hipotiroidismo clínico e subclínico são cruciais em idosos. Enquanto a evidência científica é clara na indicação p...

  14. Estudio de la función renal en pacientes con hipotiroidismo subclínico: Respuesta al tratamiento con levotiroxina Study on Renal Function in Patients with Subclinical Hypothyroidism: Response to Treatment with Levothyroxine

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    M Barovero

    2012-09-01

    Full Text Available La enfermedad renal crónica (ERC ha sido reconocida recientemente como un problema de Salud Pública. El hipotiroidismo subclínico (HSC se presenta con baja tasa de filtrado glomerular (FG, debido a una reducción en el flujo sanguíneo renal. Objetivo: Evaluar la función renal en pacientes con HSC al momento del diagnóstico y luego de ser tratados con levotiroxina (LT4. Material y Métodos: Treinta y tres pacientes entre 18 y 85 años con HSC (TSH 4,5- 10 mUI/L y T4L 0,8-1,9 ng/dl- método (CLIA, en quienes se evaluó FG previo al tratamiento con LT4 y veinticuatro pacientes postratamiento promedio ≥ 6 meses. Se determinaron TPOab (CLIA VR 0,5. Previo al tratamiento solo el 24 % tiene un FG estimado ≥ 90 ml/min/1,73 m². Se observan cambios en el FG luego de la administración de LT4: 74,6 ± 17 vs. 84,5 ± 22 ml/min/1,73 m² p Chronic Kidney Disease (CKD has been recently recognized as a public health problem. Subclinical Hypothyroidism (SCH presents with a low Glomerular Filtration Rate (GFR due to a reduction in renal blood flow. Objective: To evaluate renal function in patients with SCH at diagnosis and after treatment with levothyroxine (LT4 Materials and Methods: Thirty-three patients between 18 and 85 years of age with SCH (TSH 4.5-10 mIU/L and FT4 0.8-1.9 ng/dL, CLIA method, whose GFR was assessed prior to LT4 treatment, and twenty-four patients post-treatment average ≥ 6 months. TPOAb (CLIA VR 0.5. Only 24 % of the patients have an estimated GFR ≥ 90 ml/min/1.73 m2 prior to treatment. Changes in the GFR were observed after the administration of LT4: 74.6 ± 17 vs. 84.5 ± 22 ml/min/1.73 m² p < 0.5. We recommend studying the renal function in every patient with thyroid dysfunction. Excluding other causes of kidney failure, an improvement in GFR is expected in patients with subclinical hypothyroidism after being treated with levothyroxine. The authors do not have conflicts of interest.

  15. Hiperplasia hipofisaria secundaria a hipotiroidismo primario

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    Oscar Castillo

    2013-01-01

    Full Text Available Paciente mujer de 15 años referida por diagnóstico de hipotiroidismo e hiperprolactinemia, con tratamiento irregular para ambas patologías, quien presentó pérdida de conocimiento en dos oportunidades, motivo por el cual se le indicó resonancia magnética (RM de cerebro, en la cual se evidenció imagen tumoral hipofisaria que desplazaba el quiasma óptico. Se le indicó tratamiento con levotiroxina 50 ug por 1 semana, luego 100 ug diario. Los controles hormonales posteriores mostraron normalización, la RM de control evidenció disminución de tamaño de la imagen tumoral en aproximadamente 3 mm, sin repercusión en las estructuras supraselares o paraselares, con mejoría de cuadro clínico luego del tratamiento de sustitución con hormona tiroidea.

  16. "INCIDENCIA DEL HIPOTIROIDISMO CONGÉNITO EN EL HOSPITAL INFANTIL EVA SÁMANO DE LÓPEZ MATEOS"

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    Figueroa López, Daniel

    2012-01-01

    El hipotiroidismo congénito (HC) es una de las causas de retraso mental, la prevalencia mundial de esté, es uno de dos mil cuatrocientos cincuenta y ocho recién nacidos vivos (RN), se han descrito variaciones tanto geográficas como poblacionales. La sospecha se realiza por medio de la prueba llamada tamiz neonatal el cual se debe tomar a todo RN. 1 2. ANTECEDENTES El hipotiroidismo es la situación resultante de una disminución de la actividad biológica tisular de las h...

  17. "INCIDENCIA DEL HIPOTIROIDISMO CONGÉNITO EN EL HOSPITAL INFANTIL EVA SÁMANO DE LÓPEZ MATEOS"

    OpenAIRE

    Figueroa López, Daniel

    2012-01-01

    El hipotiroidismo congénito (HC) es una de las causas de retraso mental, la prevalencia mundial de esté, es uno de dos mil cuatrocientos cincuenta y ocho recién nacidos vivos (RN), se han descrito variaciones tanto geográficas como poblacionales. La sospecha se realiza por medio de la prueba llamada tamiz neonatal el cual se debe tomar a todo RN. 1 2. ANTECEDENTES El hipotiroidismo es la situación resultante de una disminución de la actividad biológica tisular de las h...

  18. Perfil Sistêmico e Manifestações Bucais em Pacientes com Hipotireoidismo Perfil sistémico y manifestaciones bucales en pacientes con hipotiroidismo Profile systemic and oral manifestations in patients with hypothyroidism

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    Graziele Beanes da Silva Santos

    2012-06-01

    Full Text Available O hipotireoidismo é uma desordem endócrina, de natureza sistêmica caracterizada pela disfunção na glândula tireóide. Os hormônios tireoidianos T3 e T4 são necessários para suprir funções orgânicas normais do organismo. Desta forma, distúrbios na secreção de T3 e T4 podem estar associados a alterações no sistema estomatognático. Dentre essas alterações encontram-se hipoplasia condilar, atresia maxilar ou mandibular, hipodesenvolvimento da mandíbula, prognatismo maxilar, hipoplasia de esmalte e dentina, taurodontia e retardo na erupção dentária e no desenvolvimento radicular. Desta forma é imprescindível que o cirurgião dentista tenha conhecimento sobre as manifestações locais ou sistêmicas associadas a esta desordem endócrina. O objetivo deste artigo é abordar as alterações sistêmicas e bucais em pacientes acometidos pelo hipotireoidismo, bem como os cuidados e condutas terapêutica que podem ser adotados durante o tratamento odontológico. A coleta de dados foi realizada através da seleção de artigos publicados a cerca das manifestações bucais em pacientes acometidos por hipotireoidismo nos principais bancos de dados, Bireme, Medline e Scielo. O hipotireoidismo é uma patologia sistêmica comum, que ocasionalmente apresenta manifestações bucais e necessitam de cuidados especiais durante tratamentos odontológicos. A interação medicamentosa frente à pacientes em tratamento do hipotireoidismo também deve ser considerada, uma vez que medicações comumente prescritas na odontologia podem promover reações adversas. Desta forma, é imprescindível que o cirurgião-dentista tenha conhecimento sobre os procedimentos adequados na terapêutica de pacientes com essa síndrome.El hipotiroidismo es un trastorno endocrino que se caracteriza por el carácter sistémico de la disfunción de la glándula tiroides. Las hormonas tiroideas T3 y T4 son necesarias para cumplir con las funciones normales del cuerpo f

  19. Hipotiroidismo y síndrome de Down

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    Claret, C; Corretger, J.M.; Goday, A

    2013-01-01

    El hipotiroidismo subclínico es frecuente en los primeros años de vida de los niños con síndrome de Down (SD). El objetivo de este estudio fue analizar la evolución natural de esta patología identificando los factores que predicen su remisión espontánea. Se trata de un estudio observacional retrospectivo sobre pacientes con SD e hipotiroidismo diagnosticado antes de los 5 años de edad, atendidos en un centro médico de referencia para SD. Según los resultados obtenidos, la conclusión es que el...

  20. Queratodermia palmoplantar asociada a Hipotiroidismo Acquired palmoplantar keratoderma with hypothyroidism

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    María Dolores Salduna

    2005-03-01

    Full Text Available Describimos un paciente de 45 años de sexo masculino, con hiperqueratosis palmoplantar. Simultáneamente se diagnosticó hipotiroidismo primario de origen autoinmune. Al realizar tratamiento sustitutivo con levotiroxina, el cuadro dermatológico se resolvió en el transcurso de siete meses. La queratodermia palmoplantar adquirida asociada a hipotiroidismo es una condición reversible. A pesar de ser una asociación infrecuente, debe ser considerada en el diagnóstico diferencial.We report the case of a 45 year-old male with palmoplantar hyperkeratosis. He had chronic thyroiditis with severe hypothyroidism. Skin lesions improved upon thyroid hormone replacement. Complete resolution of palmoplantar keratoderma was achieved after 7 months of therapy. The association of acquired palmoplantar keratoderma with hypothyroidism even though extremely unusual, should be considered in the differential diagnosis. It is a reversible condition.

  1. Hipotiroidismo subclínico en una muestra oportunista de la población de Castilla y León

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    Ana Isabel Mariscal Hidalgo

    2015-03-01

    Conclusiones: La prevalencia estimada de hipotiroidismo subclínico es alta, en los límites superiores reflejados en la literatura. La posibilidad de progresión a hipotiroidismo manifiesto, así como la asociación con diversas enfermedades y factores de riesgo, aconsejan una gestión adecuada de su diagnóstico y tratamiento.

  2. Prevalencia de hipotiroidismo tanto cl?nico como subcl?nico y su efecto sobre el perfil lip?dico en pacientes con diabetes mellitus tipo 2, pertenecientes al Club de Diabetes del Hospital de Especialidades de las Fuerzas Armadas en la ciudad de Quito - Ecuador

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    Mochas Torres, Luis Geovanny

    2015-01-01

    Objetivo. El objetivo del presente estudio es determinar la prevalencia de hipotiroidismo cl?nico y subcl?nico y su efecto sobre el perfil lip?dico y control gluc?mico en pacientes con diabetes mellitus tipo 2. Pacientes y m?todos. Se realiz? un estudio de corte transversal en pacientes diab?ticos tipo 2 pertenecientes al club de diab?ticos del Hospital de Especialidades de las Fuerzas Armadas de la ciudad de Quito, durante el periodo de enero a abril del 2014. De un total de 300 pac...

  3. Hipotiroidismo inducido por Amiodarona: Reporte de caso

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    Jorge Luis Salinas Arce

    2012-03-01

    Full Text Available Se describe el caso de una mujer de 57 años de edad, con diagnóstico de síndrome de Wolf Parkinson White, en tratamiento con amiodarona 200 mg/día; que acudió por presentar palpitaciones, fatiga y aumento de sueño. Al examen físico no se encontró bocio, pero los reflejos osteotendinosos estaban prolongados. Los exámenes auxiliares mostraron TSH elevado, T4 libre disminuido y anticuerpos antiperoxidasa tiroidea negativos. Se suspendió la amiodarona y se inició levotiroxina. Después de dos meses; los niveles de TSH y T4 libre eran normales y la paciente no presentaba molestias. La amiodarona está asociada a diversos efectos adversos que pueden limitar su uso. Entre estos efectos adversos, se describe el hipotiroidismo inducido, que se caracteriza por TSH elevado, T4 libre disminuido y síntomas inespecíficos como fatiga, intolerancia al frío y piel seca. El tratamiento de elección es la levotiroxina.

  4. Hipotiroidismo congénito secundario a hipoplasia tiroidea detectado en edad adulta

    OpenAIRE

    Paula Monti; Silvana Roveto; Soledad Rajuan; Carla Gazzi; Daniel Rimoldi

    2013-01-01

    La ubicación anatómica de la glándula tiroidea y su biosíntesis hormonal están reguladas por la expresión de ciertos genes, cuya alteración puede conducir a las denominadas disgenesias tiroideas: agenesia, ectopía e hipoplasia, así como a las variantes dishormonogenéticas. Se presenta el caso de una paciente con retraso mental y diagnóstico de hipotiroidismo realizado en la edad adulta. Las determinaciones bioquímicas confirmaron el diagnóstico de hipotiroidismo no autoinmune. Este caso repre...

  5. Hipotiroidismo congénito secundario a hipoplasia tiroidea detectado en edad adulta

    OpenAIRE

    2013-01-01

    La ubicación anatómica de la glándula tiroidea y su biosíntesis hormonal están reguladas por la expresión de ciertos genes, cuya alteración puede conducir a las denominadas disgenesias tiroideas: agenesia, ectopía e hipoplasia, así como a las variantes dishormonogenéticas. Se presenta el caso de una paciente con retraso mental y diagnóstico de hipotiroidismo realizado en la edad adulta. Las determinaciones bioquímicas confirmaron el diagnóstico de hipotiroidismo no autoinmune. Este caso repre...

  6. Hipotiroidismo subclínico y factores de riesgo cardiovascular Subclinical hypothyroidism and cardiovascular risk factors

    OpenAIRE

    M.ª C. Frías López; P. J. Tárraga López; J. A. Rodríguez Montes; J. Solera Albero; Á. Celada Rodríguez; M. A. López Cara; Gálvez, A

    2011-01-01

    Objetivo: Conocer la prevalencia del hipotiroidismo subclínico en la población general de un centro de salud urbano y describir las características clínicas y factores de riesgo cardiovascular de los pacientes con hipotiroidismo subclínico. Métodos: Se realizó un estudio observacional descriptivo, transversal, retrospectivo, revisando las historias clínicas de los pacientes incluidos en la muestra desde junio de 2005 hasta julio de 2007. Se analizaron las siguientes variables; Datos generales...

  7. EXCRECION FRACCIONAL DE UREA BAJA EN HIPONATREMIA INDUCIDA POR HIPOTIROIDISMO

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    Musso CG

    2005-02-01

    Full Text Available ABSTRACTHypothyroidism can cause disturbance of renal hemodinamics, kidney histology, water and electrolyte metabolism, being hyponatremia and glomerular filtration reduction their low prevalent but most significant consequences. All these changes are largely corrected by substitution of exogenous thyroid hormone.Fractional excretion of urea (FEU is a useful index in the evaluation of hyponatremia. However, it was not still reported in the literature the FEU value in hyponatremia induced by hypothyroidism. Because of that we presented a case report showing that the value of FEU and fractional excretion of sodium (FENa were low (FEU: 29% and high (FENa: 2.2 % respectively in a severe hypothyroid patient. Treatment based on thyroid hormone normalized both indeces.RESUMEN:El hipotiroidismo puede causar alteraciones del metabolismo del agua, los electrolitos, la hemodinamia e histología renales, siendo la hiponatremia y la reducción del filtrado glomerular sus consecuencias más significativas, pero poco prevalentes. Todos estos cambios son corregibles con el suministro de hormona tiroidea exógena.La excreción fraccional de urea (EFU es un índice útil en la evaluación de la hiponatremia, pero no se ha descripto aun el valor que este índice alcanza en la hiponatremia inducida por hipotiroidismo. En el presente reporte mostramos que la EFU y excreción fraccional de sodio (EFNa fueron baja (EFU: 29% y alta (EFNa: 2.2% respectivamente en un paciente que padecía hipotiroidismo severo. El tratamiento con hormona tiroidea normalizó el valor de ambos índices.

  8. Prevalencia de Hipotiroidismo Congénito y factores asociados en neonatos nacidos en un Hospital del Área Metropolitana de Bucaramanga entre junio de 2014 y junio de 2015

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    Adriana Ortíz

    2016-06-01

    Full Text Available Introducción: El hipotiroidismo neonatal es un trastorno congénito de la glándula tiroides que se caracteriza por una baja producción de las hormonas tiroideas y que conduce a daños irreversibles en el desarrollo psicomotor cuando se detecta tardíamente. Un diagnóstico a tiempo de esta condición permite instaurar un tratamiento y seguimiento efectivo del caso con el fin de evitar las secuelas. Objetivo: Determinar la prevalencia de Hipotiroidismo Congénito (HC y factores asociados en neonatos nacidos en un Hospital del Área Metropolitana de Bucaramanga, entre Junio de 2014 a Junio de 2015. Materiales y métodos: Estudio de casos y controles anidado en una cohorte retrospectiva (relación 1:4. Inicialmente, con la información de todos los RN durante el período se determinó la prevalencia de HC. Los neonatos con niveles de TSH neonatal >15 mU/L en sangre de cordón recolectada en papel filtro o de >10 mU/L en sangre de talón fueron considerados como casos. 104 neonatos con niveles normales de TSH se eligieron aleatoriamente como controles. La información clínica y demográfica se consultó en la base de datos del hospital y se registró en formatos específicos. El análisis estadístico se realizó utilizando regresión logística. Resultados: Se tamizaron 2.475 neonatos en los cuales se detectaron 25 casos de HC. La prevalencia de HC fue 1.01% (IC95% de 0.65% - 1.49%. Los casos fueron comparados con 104 controles. Los factores estadísticamente significativos que se asociaron con HC fueron haber realizado controles prenatales (ORa 0.19 IC 95% 0.005-0.69, la talla del RN (ORa 0.82 IC95% 0.71-0.96 y el antecedente de hipotiroidismo materno (ORa 5.19 IC 95% 1.13-23.94. Los antecedentes de la madre más frecuentes fueron preeclampsia y sobrepeso. Conclusiones: La prevalencia de HC fue mayor comparada con estudios previos (20 veces. Aunque en este hospital la confirmación de HC con la prueba L-T4 no está disponible al egreso del RN

  9. Coexistência de hipotiroidismo e polimiosite

    OpenAIRE

    Singh, Maize Fernanda Bonim; Fernandes,Sandra Regina M; Costallat, Lilian Tereza Lavras; Bértolo,Manoel Barros; Queiroz, Luciano de Souza; Samara,Adil Muhib

    2003-01-01

    Pacientes com hipotiroidismo freqüentemente apresentam sintomas músculo-esqueléticos e aumento de enzimas musculares, como a creatinaquinase (CK). Com o tratamento hormonal adequado é incomum ocorrer grandes aumentos de CK e manutenção de queixas musculares. Este trabalho relata o caso de uma paciente com hipotiroidismo, queixa de fraqueza muscular proximal e aumento de CK, sem melhora clínica com uso de levotiroxina. O diagnóstico de polimiosite foi confirmado por eletroneuromiografia e bióp...

  10. Prevalencia de Hipotiroidismo en Pacientes Menopáusicas que acuden al Hospital de San Gabriel, Provincia del Carchi

    OpenAIRE

    Montenegro Sánchez, Marco Trajano

    2014-01-01

    La menopausia se define clínicamente como la ausencia de la menstruación por un período igual o mayor a 12 meses. El incremento en la concentración de tirotropina sérica (TSH), en presencia de concentraciones normales o bajas de hormonas tiroideas circulantes, define la situación de hipotiroidismo subclínico y clínico, respectivamente. La escasa literatura sobre el tema de hipotiroidismo subclínico en pacientes menopáusicas en Ecuador, motivó la realización de este estudio, con el fin de det...

  11. Atraso na erupção dental em adolescente com hipotireoidismo Retardo en la erupción dental en adolescentes con hipotiroidismo Delayed tooth eruption in an adolescent with hypothyroidism

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    Maria Sylvia de S. Vitalle

    2012-12-01

    Full Text Available OBJETIVO: Relatar o caso de adolescente que procurou serviço odontológico de um ambulatório de medicina do adolescente por apresentar atraso de erupção dentária. A atuação multiprofissional permitiu chegar ao diagnóstico de hipotireoidismo. DESCRIÇÃO DO CASO: Paciente de 16 anos e 4 meses cuja queixa inicial foi atraso na erupção dentária. Na avaliação odontológica, chamava atenção o importante atraso na erupção dentária, o que poderia estar relacionado a alguma moléstia orgânica. Desta forma, solicitou-se a intervenção da equipe médica, que, no acompanhamento, constatou se tratar de hipotireoidismo. COMENTÁRIOS: Chama-se a atenção o fato de que adolescentes prezam a aceitação pelos seus pares e as questões estéticas e, muitas vezes, a procura por um serviço de saúde envolve queixas que podem parecer triviais. Porém, o olhar atento não deixará que problemas orgânicos mais graves passem despercebidos. Salienta-se ainda a importância da atuação da equipe multiprofissional.OBJETIVO: Relatar caso de adolescente que buscó servicio odontológico de un ambulatorio de medicina del adolescente, por presentar retardo en la erupción dental y cuya actuación multiprofesional permitió llegar al diagnóstico de hipotiroidismo. DESCRIPCIÓN DEL CASO: Se describe la historia de una paciente de 16 años y 4 meses de edad cuya queja fue retardo en la erupción dental. En la evaluación odontológica, llamaba la atención el importante retardo en la erupción dental, lo que podría estar relacionado a alguna enfermedad orgánica. De este modo, se solicitó la intervención del equipo médico que, en el seguimiento, constató tratarse de hipotiroidismo. COMENTARIOS: Se llama la atención para el hecho de que adolescentes estiman mucho la aceptación por sus pares y las cuestiones estéticas y, muchas veces, la búsqueda por un servicio de salud implica quejas que pueden parecer comunes, pero una mirada atenta no dejar

  12. Hipotiroidismo congénito

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    María Fernanda Castilla Peón

    2015-03-01

    La etiología más frecuente es la disgenesia tiroidea, la cual se identifica con gamagrafía tiroidea antes de iniciar el tratamiento. El tratamiento es con levotiroxina (10-15 μg/kg/día y no debe ser retrasado ni suspendido durante los tres primeros años de vida debido al efecto deletéreo en el neurodesarrollo en el caso de deficiencia de hormonas tiroideas durante esta etapa. Los recién nacidos prematuros, enfermos o con síndrome de Down requieren una valoración especial. En este artículo se describen los algoritmos diagnósticos y terapéuticos del HC.

  13. Hipotiroidismo subclínico, depresión y deterioro cognitivo: experiencia en un centro de adultos mayores de Lambayeque

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    Carol Gonzales-Gonzales

    2014-10-01

    Full Text Available Introducción: El hipotiroidismo subclínico en adultos mayores es una enfermedad poco estudiada. Objetivos: Determinar la frecuencia de hipotiroidismo subclínico, depresión y deterioro cognitivo y explorar su asociación, en adultos mayores. Diseño: Estudio descriptivo, transversal; muestreo no probabilístico, consecutivo. Escenario: Centro de adultos mayores de EsSalud, Lambayeque, Perú. Métodos: En 2012 y 2014, y en una muestra de 84 pacientes, se cuantificó TSH y T4L mediante técnica ELISA. Se evaluó depresión con el test de Yesavage reducido y el déficit cognitivo con el mini mental test examination. Se determinó frecuencias, porcentajes y análisis inferencial exploratorio mediante el cálculo de razones de prevalencia, con intervalos de confianza al 95%, usando Epidat v 3.1. Principales medidas de resultados: Hipotiroidismo subclínico, depresión y deterioro cognitivo y su asociación. Resultados: Se estudió 65 mujeres (77% y 19 hombres (23%; en 11 (13,1% adultos mayores se halló hipotiroidismo subclínico, en 36 (42,9% depresión y en 11 (13,1% deterioro cognitivo. No se encontró asociación entre hipotiroidismo subclínico y depresión (RP: 0,85, IC95% 0,39 a 1,85; p 0,677 o deterioro cognitivo (RP: 2,48, IC95% 0,77 a 7,98; p 0,1349. Conclusiones: Existió una elevada frecuencia de hipotiroidismo subclínico, depresión, y deterioro cognitivo en los adultos mayores estudiados. No se evidenció asociación de hipotiroidismo subclínico con depresión o con deterioro cognitivo.

  14. Hipotiroidismo congénito secundario a hipoplasia tiroidea detectado en edad adulta

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    Paula Monti

    2013-04-01

    Full Text Available La ubicación anatómica de la glándula tiroidea y su biosíntesis hormonal están reguladas por la expresión de ciertos genes, cuya alteración puede conducir a las denominadas disgenesias tiroideas: agenesia, ectopía e hipoplasia, así como a las variantes dishormonogenéticas. Se presenta el caso de una paciente con retraso mental y diagnóstico de hipotiroidismo realizado en la edad adulta. Las determinaciones bioquímicas confirmaron el diagnóstico de hipotiroidismo no autoinmune. Este caso representa la evolución prolongada de una hipofunción tiroidea, que cursó en forma solapada y no diagnosticada durante 53 años de vida, con secuelas relevantes de esta deficiencia al momento del diagnóstico. La terapia exógena logró mejorías evidentes en la signo sintomatología, pero no revirtió el presunto daño neurológico atribuible a la falta de hormona tiroidea necesaria durante el desarrollo fetal. En la necropsia realizada se encontró escaso tejido tiroideo cervical correspondiente a hipoplasia tiroidea eutópica. El hallazgo de un remanente tiroideo menor a 1 cm permite explicar la supervivencia de la paciente hasta una edad avanzada.

  15. Hipotiroidismo Congénito. Presentación de un caso.

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    Angela Belkys Brito García

    2016-04-01

    Full Text Available El hipotiroidismo congénito es el cuadro clínico resultante de una disminución de la actividad biológica de las hormonas tiroideas en los primeros años de vida, tiene una incidencia de 1/3000 a 1/4000 nacidos vivos. La expresividad clínica depende del grado de insuficiencia tiroidea, solo el 5% de los casos diagnosticados presentan manifestaciones clínicas al nacer, otros pacientes solamente pueden presentar niveles elevados de hormona estimulante del tiroides (TSH en suero, el tratamiento sustitutivo con hormonas tiroideas desde etapas tempranas facilita mejor evolución y pronóstico. Se describe el diagnóstico de un recién nacido masculino de 11 días de edad, con antecedentes prenatales de alto riesgo obstétrico por ser hijo de madre portadora de glomerulopatía por IgA , nacido de embarazo a término 41.3 sem de gestación , parto distócico, peso (3650 gramos, apgar 8/9, se realiza confirmatorio de TSH positivo, a los 11 días de nacido, por dichos antecedentes prenatales y manifestaciones clínicas, bioquímicas y radiológicas evidentes de hipotiroidismo congénito se confirma su diagnóstico y se impone tratamiento oportuno.

  16. Rabdomiolisis y miopatía como únicas manifestaciones de hipotiroidismo severo secundario a tiroiditis de Hashimoto Rhabdomyolysis and myopathy as the only manifestations of severe hypothyroidism secondary to Hashimoto’s thyroiditis

    OpenAIRE

    Brito, Juan P.; Juan P. Domecq; Gabriela Prutsky; Germán Málaga; Larry Young; Kargi, Atil Y.

    2013-01-01

    La tiroiditis de Hashimoto constituye la causa más frecuente de hipotiroidismo en las regiones sin deficiencia de yodo, es más frecuente en mujeres y muchas veces tiene asociación familiar. Los síntomas y signos del hipotiroidismo son sistémicos y dependen de la duración e intensidad de la deficiencia de la hormona tiroidea. Las manifestaciones neuromusculares, son excepcionalmente los únicos signos clínicos. Se presenta el caso de un paciente joven con una miopatía severa con rabdomiolisis c...

  17. Hipotiroidismo en rumiantes Hypothyroidism in Ruminants

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    R. MATAMOROS

    2003-01-01

    Full Text Available La glándula tiroides está presente en todos los vertebrados y es única entre las glándulas endocrinas en que almacena sus productos de secreción (hormonas tiroidales extracelularmente. Estas hormonas juegan un papel indispensable en una variedad de reacciones bioquímicas en tejidos periféricos como el músculo esquelético, cardíaco, el hígado y el riñón los que colectivamente controlan la actividad metabólica basal del organismo. A pesar de que muchos procesos fisiológicos en rumiantes requieren una actividad normal de la glándula tiroides, generalmente se ha resaltado su rol principalmente en la fisiología reproductiva. Sin embargo, en la mayoría de la literatura actual, la síntesis y acciones de las hormonas tiroidales en la fisiología de los rumiantes se ha extrapolado del conocimiento extenso que se tiene en la especie canina y felina. Por lo tanto, este trabajo pretende entregar información actualizada sobre la fisiología endocrina de la glándula tiroides en los rumiantes, enfatizando su rol en el bovino y ovino y las causas mas comunes de hipotiroidismo clínico en los rumiantes domésticosThe thyroid gland is present in all vertebrates and it is unique among endocrine glands in that it stores its secretory products (the thyroid hormones extracellularly. These hormones play an indispensable role in a variety of biochemical reactions at the level of peripheral tissues such as the skeletal and heart muscle, the liver and the kidney which collectively control the basal metabolic activity of the organism. Although many physiologic processes in ruminant require a normal activity of the thyroid gland, their role has generally been emphasized in the reproductive physiology. However, in most of the current literature, the synthesis and mechanism of action of the thyroid hormones in the ruminant physiology have been extrapolated of the extensive knowledge that we have in the canine and feline species. This work seeks to give

  18. Estimación de la prevalencia de hipotiroidismo en Lleida a partir de la prescripción de hormonas tiroideas

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    M. Catalina Serna Arnáiz

    2003-01-01

    Full Text Available Fundamento: El hipotiroidismo es una enfermedad frecuente, que cursa con una sintomatología, en ocasiones inespecífica, lo que dificulta el diagnóstico. El objetivo del estudio es estimar la prevalencia de hipotiroidismo en Lleida a través de las prescripciones de la hormona tiroidea y comparar los resultados con los de otras regiones. Métodos: Estudio observacional retrospectivo. 2.854 personas que reciben tratamiento con hormona tiroidea mediante receta de la Seguridad Social. Meses de octubre a diciembre del 2001. Variables: la edad, el sexo y región sanitaria. Resultados: La prevalencia de hipotiroidismo en el 2001 es de 8,4 casos por 1.000 habitantes día (IC 95%:9,23-7,47. La edad media es de 60 años (DS<:16,6. La distribución por sexo: 2,4 ‰ en hombres y 12,4 ‰ en mujeres. Por grupos de edad: Menores de 15 años un 3,6‰, entre 15 y 64 años de 6,8 ‰ y en mayores de 64 de 12,5. Las cifras más elevadas se encuentran en las áreas rurales (Seu d’Urgell:10,5 ‰y las inferiores en áreas urbanas(Eixample:5,8 ‰, Balafia:5,4‰ Conclusiones: La cifra de hipotiroidismo en tratamiento es, como en otros estudios, superior en mujeres y predomina en los mayores de 64 años. Sin embargo, observamos valores de prevalencia inferiores en relación a los datos de un estudio poblacional previo de la misma región, indicando un posible infradiagnóstico de la enfermedad.

  19. Estimación de la prevalencia de hipotiroidismo en Lleida a partir de la prescripción de hormonas tiroideas

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    Serna Arnáiz M.ª Catalina

    2003-01-01

    Full Text Available Fundamento: El hipotiroidismo es una enfermedad frecuente, que cursa con una sintomatología, en ocasiones inespecífica, lo que dificulta el diagnóstico. El objetivo del estudio es estimar la prevalencia de hipotiroidismo en Lleida a través de las prescripciones de la hormona tiroidea y comparar los resultados con los de otras regiones. Métodos: Estudio observacional retrospectivo. 2.854 personas que reciben tratamiento con hormona tiroidea mediante receta de la Seguridad Social. Meses de octubre a diciembre del 2001. Variables: la edad, el sexo y región sanitaria. Resultados: La prevalencia de hipotiroidismo en el 2001 es de 8,4 casos por 1.000 habitantes día (IC 95%:9,23-7,47. La edad media es de 60 años (DS<:16,6. La distribución por sexo: 2,4 ? en hombres y 12,4 ? en mujeres. Por grupos de edad: Menores de 15 años un 3,6?, entre 15 y 64 años de 6,8 ? y en mayores de 64 de 12,5. Las cifras más elevadas se encuentran en las áreas rurales (Seu d'Urgell:10,5 ?y las inferiores en áreas urbanas(Eixample:5,8 ?, Balafia:5,4? Conclusiones: La cifra de hipotiroidismo en tratamiento es, como en otros estudios, superior en mujeres y predomina en los mayores de 64 años. Sin embargo, observamos valores de prevalencia inferiores en relación a los datos de un estudio poblacional previo de la misma región, indicando un posible infradiagnóstico de la enfermedad.

  20. Hipotiroidismo, miocardiopatía dilatada y síndrome nefrótico durante el embarazo

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    Ariel K. Saad

    2011-02-01

    Full Text Available El hipotiroidismo en el embarazo es infrecuente, pero cuando ocurre suele asociarse con complicaciones maternas y fetales. Se presenta el caso de una mujer joven sin antecedentes de enfermedad cardiovascular que consulta por ortopnea, dolor torácico y edema de miembros inferiores. Los exámenes pusieron en evidencia la existencia de insuficiencia cardíaca, hipotiroidismo, síndrome nefrótico e insuficiencia renal. El eco-Doppler mostró dilatación de las cuatro cavidades cardíacas con deterioro grave de la función sistólica. El tratamiento con levotiroxina por vía intravenosa mejoró el cuadro clínico y los parámetros de laboratorio. Se analizan los efectos de la hormona tiroidea sobre el aparato cardiovascular y se comentan los mecanismos fisiopatológicos de la insuficiencia cardíaca en el embarazo.

  1. Hipotiroidismo subclínico y factores de riesgo cardiovascular Subclinical hypothyroidism and cardiovascular risk factors

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    M.ª C. Frías López

    2011-12-01

    Full Text Available Objetivo: Conocer la prevalencia del hipotiroidismo subclínico en la población general de un centro de salud urbano y describir las características clínicas y factores de riesgo cardiovascular de los pacientes con hipotiroidismo subclínico. Métodos: Se realizó un estudio observacional descriptivo, transversal, retrospectivo, revisando las historias clínicas de los pacientes incluidos en la muestra desde junio de 2005 hasta julio de 2007. Se analizaron las siguientes variables; Datos generales: edad y sexo. Antecedentes familiares: patología tiroidea y otras enfermedades. Antecedentes personales: cardiovasculares, pulmonares, enfermedades autoinmunes, alteraciones gineco-obstétricas, diabetes, hipertensión (HT, dislipemia, obesidad, alteraciones psiquiátricas y hematológicas. Datos de laboratorio: niveles de TSH, niveles de T4 libre, presencia de anticuerpos antiperoxidasa, niveles de colesterol total y sus fracciones. Resultados: La prevalencia de la muestra de 100 pacientes recogida durante 8 meses fue de 3,8% de la población general mayor de 14 anos, de la cual 79 eran mujeres y 21 eran hombres. El 13% eran diabéticos tipo 2, 23% tenían HT y un 40% tenían dislipemia. Sobrepeso y obesidad estaban presentes en un 26%. El nivel medio de TSH fue 6.92 ± 2,29 μU/ml y el nivel medio de T4 libre fue 1,16 ± 0,16 ng/ml. Conclusiones: La prevalencia del hipotiroidismo subclínico fue 3,8%. sobre todo en mujeres con una edad media de 46 años. La incidencia de factores de riesgo cardiovascular en los sujetos estudiados es mayor en DM (13%, similar a la población general en cuanto a la dislipemia (40% y obesidad (20% y menor en HTA (23%. En nuestro estudio no se observa una pauta común en el manejo del hipotiroidismo subclínico, siendo necesaria la implementación y promoción de guías de actuación en Atención Primaria.Objective: To determine the prevalence of subclinical hypothyroidism in the general population of an urban health

  2. PREVALENCIA DE HIPOTIROIDISMO EN ANDALUCÍA SEGÚN EL CONSUMO DE HORMONA TIROIDEA EN 2014

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    José Escribano-Serrano

    2016-01-01

    Full Text Available Fundamento: El hipotiroidismo es la condición más común ligada a un déficit hormonal. A pesar de ello existe una escasez de datos en España sobre su su prevalencia. El objetivo fue estimar la prevalencia en Andalucía a través del registro de pacientes que consumieron hormona tiroidea durante el año 2014. Método: Se recuperaron los datos de las personas que habían retirado de la farmacia levotiroxina con cargo al sistema público durante 2014 de la base de datos del Servicio Andaluz de Salud. Se calcularon las prevalencias con sus intervalos de confianza del 95% para cada Área de Gestión, estratificadas por sexo y grupos etarios. Resultados: Se identificaron 321.368 personas (98% mayores de 18 años y 83% mujeres consumidoras de levotiroxina y se estimó una prevalencia de hipotiroidismo del 3,95% (IC95%: 3,943,96 para población general. La condición era más común en la mujer, en mayores de 18 años un 7,81% (IC95 7,80 a 7,82 comparada con el hombre 1,75% (IC95 1,73 a 1,77 con una razón de 4,5. Aumenta en la población de mujeres mayores de 45 años, 10,32% (IC95 10,30 a 10,32 y más en las mayores de 60 años 11,37% (IC95%: 11,35 a 11,40. La prevalencia en mujer adulta de las provincias occidentales fue 7,38% (IC95%: 7,36-7,40, en las orientales de 8,59% (IC95%: 8,57-8,62 y en las áreas costeras fue de 6,70% (IC95%: 6,68-6,72 frente a las montañosas que fue 8,91% (IC95%: 8,88-8,94. Conclusión: Los resultados indican una elevada prevalencia de hipotiroidismo en la población adulta de Andalucía, con un claro predominio de la mujer y un incremento con la edad. Además, la prevalencia de la enfermedad también presenta una importante variabilidad geográfica.

  3. Una visión integral del Hipotiroidismo: Una mirada psicológica a la Energía Vital

    OpenAIRE

    José Domingo Flórez Moreno

    2013-01-01

    Se mencionan algunos resultados de la primera fase de la investigación con el fin de ampliar - los de manera crítica, reflexiva y cualitativa, en cuanto a lo psicológico, energético y clínico en las enfermedades endocrinas, con el fin de di - vulgar e ir más allá de los datos cuantitativos que el grupo de Psicología Integral y Desarro - llo Humano investigó en el 2010. Lo investi - gado en el 2011 solo se utiliza para reflexionar explicando el concepto de hipotiroidismo, sus síntomas y clasif...

  4. Hipotiroidismo inducido por Amiodarona. Reporte de caso.

    OpenAIRE

    Salinas Arce, Jorge Luis; Instituto Nacional Cardiovascular (INCOR), EsSALUD. Lima. Servicio de Cardiología, Clínica El Golf. Lima.; Pinto Valdivia, Miguel; Servicio de Endocrinología, Hospital Nacional Cayetano Heredia. Lima, Perú. Facultad de Medicina Alberto Hurtado, Universidad Peruana Cayetano Heredia. Lima.; Solórzano Altamirano, Paula; Servicio de Cardiología, Clínica El Golf. Lima.

    2012-01-01

    Se describe el caso de una mujer de 57 años de edad, con diagnóstico de síndrome de Wolf Parkinson White, en tratamiento con amiodarona 200 mg/día; que acudió por presentar palpitaciones, fatiga y aumento de sueño. Al examen físico no se encontró bocio, pero los reflejos osteotendinosos estaban prolongados. Los exámenes auxiliares mostraron TSH elevado, T4 libre disminuido y anticuerpos antiperoxidasa tiroidea negativos. Se suspendió la amiodarona y se inició levotiroxina. Después de dos mese...

  5. Evolution of {sup 222} Rn and chemical species related with eruptive processes of the Popocatepetl volcano; Evolucion de {sup 222} Rn y especies quimicas relacionadas con procesos eruptivos del volcan Popocatepetl

    Energy Technology Data Exchange (ETDEWEB)

    Aranda, P.; Ceballos, S.; Cruz, D.; Hernandez, A.; Lopez, R.; Pena, P.; Salazar, S.; Segovia, N.; Tamez, E. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    1997-07-01

    The {sup 222} Rn monitoring in the Popocatepetl volcano was initiated on 1993. At December 21, 1994 it is initiated an eruptive stage in the volcano with gas emission, ashes and the lava dome formation on the crater at middle 1996. During all this time it has been determined radon concentrations on soils with active and passive detectors. In this work the changes in radon contents are reported also the physicochemical parameters in spring water related with the volcanic building associated to the recent activity of the volcano. (Author)

  6. Relaci?n del hipotiroidismo y dislipidemia en mujeres pos menop?usicas en la Cl?nica Ginecomast en el a?o 2013

    OpenAIRE

    Tinoco S?nchez, Diana Paola; Hurtado Montero, Carlos Alberto

    2014-01-01

    OBJETIVO: Conocer si existe una relaci?n estad?sticamente significativa entre el hipotiroidismo y la dislipidemia en mujeres que cursan la pos menopausia. M?TODOS: Estudio de Casos y Controles retrospectivo. Se revisaron los expedientes cl?nicos de las pacientes que acudieron a control ginecol?gico entre enero a octubre de 2013. Noventa y seis pacientes (N = 96), con una edad comprendida en entre 44 y 78 a?os formaron parte de este estudio que de acuerdo a los criterios de inclusi?n y excl...

  7. Una visión integral del Hipotiroidismo: Una mirada psicológica a la Energía Vital

    Directory of Open Access Journals (Sweden)

    José Domingo Flórez Moreno

    2013-01-01

    Full Text Available Se mencionan algunos resultados de la primera fase de la investigación con el fin de ampliar - los de manera crítica, reflexiva y cualitativa, en cuanto a lo psicológico, energético y clínico en las enfermedades endocrinas, con el fin de di - vulgar e ir más allá de los datos cuantitativos que el grupo de Psicología Integral y Desarro - llo Humano investigó en el 2010. Lo investi - gado en el 2011 solo se utiliza para reflexionar explicando el concepto de hipotiroidismo, sus síntomas y clasificaciones, y la manera como se está tratando desde el paradigma mecani - cista. Se tienen en cuenta los descubrimientos del paradigma cuántico o nuevo paradigma de la ciencia, señalando que la integralidad no es una moda y resaltando la importancia de la energía vital en la psicología. También se re - sume la relación encontrada entre lo exáme - nes endocrinos, lo energético y lo psicológico, mediante la evolución favorable en una de las participantes que no ingirió levotiroxina, con el fin de reflexionar respecto al “narcisismo teó - rico” y comenzar a proponer una manera no invasiva en el tratamiento del hipotiroidismo.

  8. Rabdomiolisis y miopatía como únicas manifestaciones de hipotiroidismo severo secundario a tiroiditis de Hashimoto Rhabdomyolysis and myopathy as the only manifestations of severe hypothyroidism secondary to Hashimoto’s thyroiditis

    Directory of Open Access Journals (Sweden)

    Juan P. Brito

    2013-03-01

    Full Text Available La tiroiditis de Hashimoto constituye la causa más frecuente de hipotiroidismo en las regiones sin deficiencia de yodo, es más frecuente en mujeres y muchas veces tiene asociación familiar. Los síntomas y signos del hipotiroidismo son sistémicos y dependen de la duración e intensidad de la deficiencia de la hormona tiroidea. Las manifestaciones neuromusculares, son excepcionalmente los únicos signos clínicos. Se presenta el caso de un paciente joven con una miopatía severa con rabdomiolisis como la única manifestación de hipotiroidismo severo debido a tiroiditis de HashimotoHashimoto’s thyroiditis is the most frequent cause of hypothyroidism. In the regions with no iodine deficiency, it is more frequent in women and oftentimes has a familial association. The symptoms and signs of hypothyroidism are systemic and depend on the duration and intensity of the thyroid hormone deficiency. Neuromuscular manifestations are seldom the only symptoms and signs present. We present the case of a young patient with severe myopathy, where rhabdomyolysis was the sole manifestation of severe hypothyroidism secondary to Hashimoto’s thyroiditis

  9. Estimación de la prevalencia del hipotiroidismo en Castilla y León y su evolución desde 1992 al 2000 a través del consumo de hormonas tiroideas

    Directory of Open Access Journals (Sweden)

    Díaz Madero Alfonso

    2001-01-01

    Full Text Available Fundamento: La importancia que tiene el hipotiroidismo desde el punto de vista epidemiológico y la dificultad de disponer de unos datos actualizados, nos ha llevado a realizar este estudio cuyo objetivo es conocer el consumo de hormonas tiroideas en la población general en el ámbito de la seguridad social en la Comunidad de Castilla y León, por provincias, así como su evolución desde 1992 al 2000, como indicador estimativo de la prevalencia del hipotiroidismo. Métodos: A partir de la base de datos ECOM del Ministerio de Sanidad y Consumo, se obtienen el número de envases de hormonas tiroideas dispensados con receta de la seguridad social, en las provincias de Castilla y León durante el periodo 1992-2000, estimando la prevalencia por medio de las dosis diarias definidas (DDD por 100.000 habitantes. Resultados: Se estima una prevalencia de hipotiroidismo en Castilla y León de 185 casos por 100.000 habitantes en 1992 que aumenta a 489 en el 2000, constituyendo un incremento del 164%. Ello representa en 1992 entre 4.559-4.827 enfermos y entre 11.929-12.360 en el 2000. El aumento de la prevalencia se observa en todas las provincias. Las provincias con mayor prevalencia son León, Soria y Ávila, siendo Palencia, Salamanca y Burgos las de menor. Conclusiones: La especificidad del tratamiento nos ha permitido establecer una relación entre el consumo de hormonas tiroideas y la prevalencia del hipotiroidismo, así como su evolución desde 1992 al 2000, aproximándonos a la situación actual de esta patología en Castilla y León.

  10. Estimación de la prevalencia del hipotiroidismo en castilla y león y su evolución desde 1992 al 2000 a través del consumo de hormonas tiroideas

    Directory of Open Access Journals (Sweden)

    Alfonso Díaz Madero

    2001-01-01

    Full Text Available Fundamento: La importancia que tiene el hipotiroidismo desde el punto de vista epidemiológico y la dificultad de disponer de unos datos actualizados, nos ha llevado a realizar este estudio cuyo objetivo es conocer el consumo de hormonas tiroideas en la población general en el ámbito de la seguridad social en la Comunidad de Castilla y León, por provincias, así como su evolución desde 1992 al 2000, como indicador estimativo de la prevalencia del hipotiroidismo. Métodos: A partir de la base de datos ECOM del Ministerio de Sanidad y Consumo, se obtienen el número de envases de hormonas tiroideas dispensados con receta de la seguridad social, en las provincias de Castilla y León durante el periodo 1992-2000, estimando la prevalencia por medio de las dosis diarias definidas (DDD por 100.000 habitantes. Resultados: Se estima una prevalencia de hipotiroidismo en Castilla y León de 185 casos por 100.000 habitantes en 1992 que aumenta a 489 en el 2000, constituyendo un incremento del 164%. Ello representa en 1992 entre 4.559-4.827 enfermos y entre 11.929-12.360 en el 2000. El aumento de la prevalencia se observa en todas las provincias. Las provincias con mayor prevalencia son León, Soria y Ávila, siendo Palencia, Salamanca y Burgos las de menor. Conclusiones: La especificidad del tratamiento nos ha permitido establecer una relación entre el consumo de hormonas tiroideas y la prevalencia del hipotiroidismo, así como su evolución desde 1992 al 2000, aproximándonos a la situación actual de esta patología en Castilla y León.

  11. Impacto de la aplicación de los criterios de la asociación americana de tiroides en el diagnóstico de hipotiroidismo en gestantes de Vigo, España

    Directory of Open Access Journals (Sweden)

    Marta Pombar-Pérez

    2013-07-01

    Full Text Available Con el objetivo de determinar el impacto de la aplicación de los criterios de la Asociación Americana de Tiroides (ATA en el diagnóstico de hipotiroidismo en gestantes del área sanitaria de Vigo en España, se analizó la concentración sérica de tirotropina (TSH, tiroxina libre (T4L y anticuerpos antitiroideos, comparando la frecuencia de gestantes diagnosticadas de hipotiroidismo aplicando los criterios utilizados en el laboratorio de hormonas del Hospital Xeral y los criterios de referencia propuestos por la ATA. La asunción de dichos criterios implicaría un aumento de un 29,6% de pacientes diagnosticadas de hipotiroidismo. La aplicación de los criterios ATA tuvo una repercusión en la medición de la concentración de TSH en gestantes lo que sugiere una evaluación de los valores de referencia de TSH en función de la población y los métodos de diagnóstico locales

  12. Impacto de la aplicación de los criterios de la asociación americana de tiroides en el diagnóstico de hipotiroidismo en gestantes de Vigo, España

    Directory of Open Access Journals (Sweden)

    Marta Pombar-Pérez

    Full Text Available Con el objetivo de determinar el impacto de la aplicación de los criterios de la Asociación Americana de Tiroides (ATA en el diagnóstico de hipotiroidismo en gestantes del área sanitaria de Vigo en España, se analizó la concentración sérica de tirotropina (TSH, tiroxina libre (T4L y anticuerpos antitiroideos, comparando la frecuencia de gestantes diagnosticadas de hipotiroidismo aplicando los criterios utilizados en el laboratorio de hormonas del Hospital Xeral y los criterios de referencia propuestos por la ATA. La asunción de dichos criterios implicaría un aumento de un 29,6% de pacientes diagnosticadas de hipotiroidismo. La aplicación de los criterios ATA tuvo una repercusión en la medición de la concentración de TSH en gestantes lo que sugiere una evaluación de los valores de referencia de TSH en función de la población y los métodos de diagnóstico locales

  13. Hipotiroidismo en la gestación. Revisión bibliográfica

    OpenAIRE

    Antón Izquierdo, Víctor

    2016-01-01

    El paciente que padece hipotiroidismo sufre una serie de alteraciones fisiológicas que desencadenan también en componentes psíquicos y sociales. Cuando el hipotiroidismo está asociado al proceso de embarazo, la revolución fisiológica es mayor y constituye una situación especial para los profesionales sanitarios. El yodo es un componente esencial de las hormonas producidas por la glándula tiroides: la tiroxina o T4 y la triyodotironina o T3. Su déficit en la ingesta puede ocasionar graves t...

  14. Diagnóstico de hipotiroidismo canino e hipertiroidismo felino 

    OpenAIRE

    Melián Limaña, Carlos

    1999-01-01

    [ES] Evaluamos 854 animales para determinar la utilidad de nuevas pruebas hormonales para el diagnóstico de las enfermedades tiroideas más comunes en los animales de compañía: hipotiroidismo canino e hipertiroidismo felino.

  15. Diagnóstico de hipotiroidismo canino e hipertiroidismo felino 

    OpenAIRE

    Melián Limiñana, Carlos

    1999-01-01

    [ES] Evaluamos 854 animales para determinar la utilidad de nuevas pruebas hormonales para el diagnóstico de las enfermedades tiroideas más comunes en los animales de compañía: hipotiroidismo canino e hipertiroidismo felino.

  16. Hipotiroidismo, miocardiopatía dilatada y síndrome nefrótico durante el embarazo Hypothyroidism, dilated cardiomyopathy and nephrotic syndrome during pregnancy

    Directory of Open Access Journals (Sweden)

    Ariel K. Saad

    2011-02-01

    Full Text Available El hipotiroidismo en el embarazo es infrecuente, pero cuando ocurre suele asociarse con complicaciones maternas y fetales. Se presenta el caso de una mujer joven sin antecedentes de enfermedad cardiovascular que consulta por ortopnea, dolor torácico y edema de miembros inferiores. Los exámenes pusieron en evidencia la existencia de insuficiencia cardíaca, hipotiroidismo, síndrome nefrótico e insuficiencia renal. El eco-Doppler mostró dilatación de las cuatro cavidades cardíacas con deterioro grave de la función sistólica. El tratamiento con levotiroxina por vía intravenosa mejoró el cuadro clínico y los parámetros de laboratorio. Se analizan los efectos de la hormona tiroidea sobre el aparato cardiovascular y se comentan los mecanismos fisiopatológicos de la insuficiencia cardíaca en el embarazo.Hypothyroidism during pregnancy is infrequent, but its presence is associated with maternal and fetal complications. We present the case of a young pregnant woman with no previous history of cardiovascular disease, who consulted for orthopnea, chest pain and edema in both legs. Laboratory tests demonstrated a hypothyroid condition and a nephrotic syndrome with renal failure. The echo-Doppler exam showed a four chamber dilatation with systolic dysfunction. Treatment with intravenous levothyroxine improved her medical condition. We analyze the effects of thyroid hormone on the heart and vascular system and discuss the pathophysiologic mechanisms of heart failure during pregnancy.

  17. Práticas profissionais e tratamento ofertado nos CAPSad do município de Natal-RN: com a palavra a família Prácticas profesionales y tratamiento ofrecido en los CAPSad en la ciudad de natal-rn: con la palabra la familia Professional practice and treatment offered in CAPSad in the city of natal-rn: with the word, the family

    Directory of Open Access Journals (Sweden)

    Dulcian Medeiros de Azevedo

    2010-03-01

    Full Text Available O Centro de Atenção Psicossocial para tratamento de usuários de álcool e outras drogas (CAPSad representa a principal estratégia de atenção à saúde relacionada ao consumo de substâncias psicoativas. Objetivou-se investigar a percepção de familiares acerca do tratamento ofertado nos CAPSad Norte e Leste do município de Natal-RN. Foram entrevistados 14 familiares que participavam regularmente das atividades propostas. As entrevistas foram realizadas em agosto e setembro de 2007 e transcritas na íntegra para preparação do corpus e submissão ao ALCESTE. O material discursivo originou três categorias temáticas: Tratamento Melhoras e Expectativas; Convivência Usuário Antes e Depois; e Condições Terapêuticas Agradecimentos, Sugestões e Vulnerabilidade. Os familiares identificaram que o tratamento recebido nos CAPSad favorece melhoras substanciais nas condições de vida e de saúde de seu familiar usuário e nas relações familiares dentro e fora do lar, sendo detectada a necessidade de ajustes e do aumento da oferta das atividades terapêuticas.El Centro de Atención Psicosocial para el tratamiento de los usuarios de alcohol y de otras drogas (CAPSad representa la principal estrategia para la atención de la salud relacionada con el consumo de sustancias psicoactivas. El objetivo fue investigar la percepción que tienen los familiares sobre el tratamiento ofrecido en CAPSad norte y este de la ciudad de Natal-RN. Entrevistamos a 14 familiares que participaban regularmente las actividades propuestas. Las entrevistas fueron realizadas en agosto y septiembre de 2007, y transcritas en su totalidad para la preparación del corpus y para su presentación al ALCESTE. El material discursivo produjo tres temas: Tratamiento - Mejoras y Expectativas; Convivencia - Usuario Antes y Después; Condiciones Terapéuticas - Agradecimientos, Consejos y Vulnerabilidad. Los miembros de la familia identificaron que el trato recibido en CAPSad

  18. Estudo com idosos de instituições asilares no município de Natal/RN: características socioeconômicas e de saúde Estudio con ancianos de instituciones asilares en el municipio de Natal/RN: características socio-económicas y de salud Study with elderly from asylums in Natal/RN: socioeconomic and health characteristics

    Directory of Open Access Journals (Sweden)

    Rejane Marie Barbosa Davim

    2004-06-01

    Full Text Available O envelhecimento populacional acelerado no Brasil certamente aumentará o número de idosos institucionalizados. Baseados nesse enfoque, este estudo exploratório descritivo foi desenvolvido em três instituições asilares na cidade de Natal (RN e objetivou caracterizar o idoso asilado; identificar os problemas socioeconômicos, de saúde e as causas que os levaram ao asilo. A amostra constituiu-se de 30% da totalidade de idosos de cada instituição, as quais têm caráter filantrópico e abrigam idosos carentes. Os resultados mostraram que as três instituições possuem características socioeconômicas e de saúde semelhantes às encontradas na literatura, pontuando-se baixas condições financeiras, contato familiar conflituoso, atividades de lazer limitadas ou ausentes, saúde precária, restrito atendimento médico e de enfermagem, além da ausência de planos privados de saúde. Conclui-se, refletindo-se quanto às condições socioeconômicas e de saúde desses idosos, que há a necessidade da atuação de órgãos competentes com vistas a seus direitos de cidadania.El envejecimiento poblacional acelerado en Brasil ciertamente aumentará el número de ancianos institucionalizados. Basado en este hecho, este estudio exploratorio descriptivo fue realizado en tres instituciones asilares en Natal (RN, Brasil, con la finalidad de caracterizar al anciano que vive en un asilo, identificándose las características socioeconómicas y los problemas de salud afrontados por ellos y las causas de su institucionalización. La muestra consiste en 30% de la cantidad total de ancianos de cada institución. Los asilos son instituciones filantrópicos y albergan al anciano necesitado. Los resultados mostraron que las tres instituciones tenían características socioeconómicas y de salud similares a lo que se encuentra en la literatura, tales como las bajas condiciones financieras, contacto familiar conflictivo, actividades de ocio limitadas o ausentes

  19. Tamización para hipotiroidismo congénito en Cali y constitución de un centro piloto de referencia para la identificación temprana de la enfermedad.

    OpenAIRE

    Matilde de Bernal; Margarita Caldas; Rubén Darío Bonilla; Gloria Amparo Chamorro; Audry Matallana

    2009-01-01

    El diagnóstico precoz y el tratamiento del hipotiroidismo congénito (HC) son esenciales para la maduración neurocognitiva adecuada del recién nacido. Se diseñó y se desarrolló un programa de tamizaje para este defecto congénito en el Laboratorio de Endocrinología, Facultad de Salud, Universidad del Valle y con la colaboración de la Secretaria Municipal de Cali se implementó desde octubre de 2001 en 6 instituciones prestadoras del servicio de salud (IPS) de la Red de Salud de Cali, el Hospital...

  20. Tamizaje nacional unificado de hipotiroidismo congénito en el Perú: un programa inexistente

    Directory of Open Access Journals (Sweden)

    Lina Huerta-Sáenz

    Full Text Available El hipotiroidismo congénito (HC es la principal causa prevenible de retardo mental. La prevalencia de HC varía de acuerdo con la región geográfica y la población racial. En el hemisferio norte, la incidencia es 1:4000 recién nacidos vivos. En Latinoamérica, la incidencia varía debido a la heterogeneidad racial/étnica y al nivel de desarrollo. En el Perú, un estudio realizado en 1984 describió esta prevalencia como 1:1250. En el 2007, esta prevalencia fue reportada como 1:1638 por el Instituto Nacional Materno Perinatal. Un reciente estudio del Instituto Nacional de Salud del Niño durante 1995-2005, describió la edad promedio de diagnóstico de HC como 5,9 meses +/- 5,28. Esta tardía edad de diagnóstico sugiere la poca eficiencia de los actuales programas de tamizaje. Todo niño peruano tiene derecho a recibir diagnóstico oportuno y tratamiento de HC y es el Estado Peruano, el responsable principal de asegurar que esta meta se cumpla.

  1. Estudo da associação entre a diabetes mellitus e o hipotiroidismo

    OpenAIRE

    Ferreira, Marisa Helena Lopes

    2014-01-01

    A Diabetes mellitus (DM) é uma das doenças mais comuns a nível mundial e caracteriza-se por uma hiperglicémia crónica que quando não controlada induz diversas complicações. Nos últimos anos tem-se verificado um aumento no número de casos de hipotiroidismo na população diabética em comparação com a população geral, levando a considerar um possível impacto da DM na função da tiróide. Nesse sentido, este trabalho teve como objetivo avaliar a incidência do hipotiroidismo numa população diabética ...

  2. Estimación de la prevalencia de hipotiroidismo en España a partir del consumo de hormonas tiroideas (1996-1999

    Directory of Open Access Journals (Sweden)

    Morant Ginestar Consuelo

    2001-01-01

    Full Text Available Fundamento: Ante la escasez de datos acerca de la prevalencia de hipotiroidismo en España, se decide estimarla a través del consumo de su tratamiento específico, las hormonas tiroideas, utilizando la metodología de los estudios de utilización de medicamentos. Métodos: Cálculo de la Dosis Habitante Día (DHD de hormonas tiroideas (grupo terapéutico H03 de la Anatomical Therapeutic Chemical a través de la Dosis Diaria Definida (DDD, durante 1996 y 1999, en las distintas provincias de las Comunidades Autónomas de todo el territorio nacional. Se han calculado los intervalos de confianza al 95 % para las prevalencias estimadas en las comunidades autónomas y en el territorio nacional, así como los incrementos porcentuales de 1999 respecto a 1996. Los datos de las prescripciones han sido facilitados por el Ministerio de Sanidad y Consumo. Resultados: Se estima una prevalencia nacional de hipotiroidismo para 1996, de 3,19 casos por 1.000 habitantes y para 1999, de 4,33 casos por 1000 habitantes; el incremento porcentual es de 26,38 %. Los resultados de la DHD muestran diferencias en la prevalencia entre provincias: Guadalajara presenta las cifras más altas en los dos años estudiados(5,02 y 7,01 casos por 1.000 habitantes/día en 1996 y 1999 respectivamente y Melilla, las más bajas (1,07 y 1,60 casos por 1.000 habitantes/día. En todas las provincias y comunidades autónomas se ha producido un incremento de la DHD en el año 1999 respecto al 1996. El incremento menor fue para Asturias (9,62 % y el más alto para La Rioja (35,26 %. Conclusiones: Los 3,19 y 4,33 DDD por 1.000 habitantes/día en 1996 y 1999 respectivamente, pueden ser interpretados como la prevalencia de hipotiroidismo diagnosticado y tratado. Estas cifras se hallan en el intervalo determinado por otros estudios, aunque las comparaciones entre estudios de diferente metodología deben hacerse con extremada precaución. El incremento observado en el consumo podría explicarse m

  3. Estimación de la prevalencia de hipotiroidismo en españa a partir del consumo de hormonas tiroideas (1996-1999

    Directory of Open Access Journals (Sweden)

    Consuelo Morant Ginestar

    2001-01-01

    Full Text Available Fundamento: Ante la escasez de datos acerca de la prevalencia de hipotiroidismo en España, se decide estimarla a través del consumo de su tratamiento específico, las hormonas tiroideas, utilizando la metodología de los estudios de utilización de medicamentos. Métodos: Cálculo de la Dosis Habitante Día (DHD de hormonas tiroideas (grupo terapéutico H03 de la Anatomical Therapeutic Chemical a través de la Dosis Diaria Definida (DDD, durante 1996 y 1999, en las distintas provincias de las Comunidades Autónomas de todo el territorio nacional. Se han calculado los intervalos de confianza al 95 % para las prevalencias estimadas en las comunidades autónomas y en el territorio nacional, así como los incrementos porcentuales de 1999 respecto a 1996. Los datos de las prescripciones han sido facilitados por el Ministerio de Sanidad y Consumo. Resultados: Se estima una prevalencia nacional de hipotiroidismo para 1996, de 3,19 casos por 1.000 habitantes y para 1999, de 4,33 casos por 1000 habitantes; el incremento porcentual es de 26,38 %. Los resultados de la DHD muestran diferencias en la prevalencia entre provincias: Guadalajara presenta las cifras más altas en los dos años estudiados(5,02 y 7,01 casos por 1.000 habitantes/ día en 1996 y 1999 respectivamente y Melilla, las más bajas (1,07 y 1,60 casos por 1.000 habitantes/día. En todas las provincias y comunidades autónomas se ha producido un incremento de la DHD en el año 1999 respecto al 1996. El incremento menor fue para Asturias (9,62 % y el más alto para La Rioja (35,26 %. Conclusiones: Los 3,19 y 4,33 DDD por 1.000 habitantes/ día en 1996 y 1999 respectivamente, pueden ser interpretados como la prevalencia de hipotiroidismo diagnosticado y tratado. Estas cifras se hallan en el intervalo determinado por otros estudios, aunque las comparaciones entre estudios de diferente metodología deben hacerse con extremada precaución. El incremento observado en el consumo podría explicarse

  4. Tamizaje neonatal de hipotiroidismo congénito en colombia: ¿qué muestra utilizar?

    OpenAIRE

    López P.; Vélez O.; Herrera E.; Solórzano MC.; Erazo ML.; Satizábal JM.

    2011-01-01

    Para el tamizaje neonatal de Hipotiroidismo Congénito (H.G.) la O.M.S. recomienda utilizar muestras de sangre de talón (tercer-séptimo día posparto); la Academia Americana de Pediatría
    al momento del alta hospitalaria (generalmente después de 48 horas en países desarrollados); en Colombia la resolución 00412/2000 de cordón umbilical al nacimiento.

  5. Taponamiento cardíaco por hipotiroidismo: descripción de 2 casos

    OpenAIRE

    José Rafael Rojas-Solano; María Claudia Peláez-Gil; Francisco Jiménez-Bolaños

    2005-01-01

    Rara vez el derrame pericárdico en el hipotiroidismo evoluciona al taponamiento cardíaco, complicación que es mortal si no se diagnostica y trata a tiempo. En este artículo describimos dos singulares casos y discutimos aspectos importantes de la fisiopatología, diagnóstico y manejo de esta enfermedad.Pericardial effusion in hypothyroidism seldom evolves to cardiac tamponade, a fatal complication if diagnosis and treatment are delayed. In this article, we describe 2 singular cases and discuss ...

  6. Tamizaje neonatal de hipotiroidismo congénito en colombia: ¿qué muestra utilizar?

    OpenAIRE

    López P.; Vélez O.; Herrera E.; Solórzano MC.; Erazo ML.; Satizábal JM.

    2011-01-01

    Para el tamizaje neonatal de Hipotiroidismo Congénito (H.G.) la O.M.S. recomienda utilizar muestras de sangre de talón (tercer-séptimo día posparto); la Academia Americana de Pediatría
    al momento del alta hospitalaria (generalmente después de 48 horas en países desarrollados); en Colombia la resolución 00412/2000 de cordón umbilical al nacimiento.

  7. Hipotiroidismo Congénito. Presentación de un caso.

    OpenAIRE

    Angela Belkys Brito García; José Miguel Alcalde Rojas; Raúl Medina Martín

    2016-01-01

    El hipotiroidismo congénito es el cuadro clínico resultante de una disminución de la actividad biológica de las hormonas tiroideas en los primeros años de vida, tiene una incidencia de 1/3000 a 1/4000 nacidos vivos. La expresividad clínica depende del grado de insuficiencia tiroidea, solo el 5% de los casos diagnosticados presentan manifestaciones clínicas al nacer, otros pacientes solamente pueden presentar niveles elevados de hormona estimulante del tiroides (TSH) en suero, el tratamiento...

  8. Hipotiroidismo Congénito. Presentación de un caso.

    OpenAIRE

    2016-01-01

    El hipotiroidismo congénito es el cuadro clínico resultante de una disminución de la actividad biológica de las hormonas tiroideas en los primeros años de vida, tiene una incidencia de 1/3000 a 1/4000 nacidos vivos. La expresividad clínica depende del grado de insuficiencia tiroidea, solo el 5% de los casos diagnosticados presentan manifestaciones clínicas al nacer, otros pacientes solamente pueden presentar niveles elevados de hormona estimulante del tiroides (TSH) en suero, el tratamiento...

  9. Tamizaje neonatal de Hipotiroidismo congénito en Colombia: ¿Qué muestra utilizar?

    Directory of Open Access Journals (Sweden)

    López P.

    2001-06-01

    Full Text Available Para el tamizaje neonatal de Hipotiroidismo Congénito (H.G. la O.M.S. recomienda utilizar muestras de sangre de talón (tercer-séptimo día posparto; la Academia Americana de Pediatría
    al momento del alta hospitalaria (generalmente después de 48 horas en países desarrollados; en Colombia la resolución 00412/2000 de cordón umbilical al nacimiento.

  10. Taponamiento cardíaco por hipotiroidismo: descripción de 2 casos

    OpenAIRE

    José Rafael Rojas-Solano; María Claudia Peláez-Gil; Francisco Jiménez-Bolaños

    2005-01-01

    Rara vez el derrame pericárdico en el hipotiroidismo evoluciona al taponamiento cardíaco, complicación que es mortal si no se diagnostica y trata a tiempo. En este artículo describimos dos singulares casos y discutimos aspectos importantes de la fisiopatología, diagnóstico y manejo de esta enfermedad.Pericardial effusion in hypothyroidism seldom evolves to cardiac tamponade, a fatal complication if diagnosis and treatment are delayed. In this article, we describe 2 singular cases and discuss ...

  11. Epidemiología del hipotiroidismo congénito en México Epidemiology of congenital hypothyroidism in Mexico

    Directory of Open Access Journals (Sweden)

    Marcela Vela-Amieva

    2004-04-01

    Full Text Available OBJETIVO: Describir las características epidemiológicas del hipotiroidismo congénito en recién nacidos en unidades médicas de la Secretaría de Salud de México. MATERIAL Y MÉTODOS: Estudio transversal en el cual se cuantificó tirotropina en 1 379 717 muestras de sangre de recién nacidos (de cordón umbilical o de talón, recolectadas en papel filtro, de enero de 2001 a diciembre de 2002, en unidades médicas de la Secretaría de Salud. Las muestras con tirotropina >15 µUI/ml para sangre de cordón, y > 10 µUI/ml para talón, se consideraron sospechosas, y se notificaron para realizar el perfil tiroideo y gammagrafía. Cuando los resultados fueron positivos, el caso se registró como hipotiroidismo congénito confirmado, y se anotaron los datos clínicos y demográficos en formatos específicos. Se utilizó estadística descriptiva estándar. RESULTADOS: Se encontró una prevalencia de 4.12 x 10 000 recién nacidos, con predominancia del sexo femenino (66.84%. Se observaron variaciones estatales en la prevalencia, máxima en Quintana Roo (8.13 x 10 000 recién nacidos y mínima en Sinaloa (0.62 X 10 000. Se encontraron 57.46% tiroides ectópicas, 35.91% agenesias tiroideas y 6.63% defectos de la función de las hormonas tiroideas. Los principales datos clínicos fueron hernia umbilical (43.73% e ictericia (41.58%. A 151 (17.12% sospechosos no se les realizó estudio confirmatorio debido a datos incompletos o falsos en la ficha de identificación, fallecimiento del recién nacido, renuencia de los padres y cambio de domicilio. CONCLUSIONES: El hipotiroidismo se presentó en 1:2 426 recién nacidos, con predominio femenino (2:1, siendo la ectopia tiroidea su forma más común, y la hernia umbilical y la ictericia sus datos clínicos prominentes.OBJECTIVE: To describe the epidemiological characteristics of congenital hypothyroidism (CH in newborns (NB detected by the Ministry of Health of Mexico (SSA. MATERIAL AND METHODS: A cross

  12. Coexistência de hipotiroidismo e polimiosite Coexistence of hypothyroidism and polymyositis

    Directory of Open Access Journals (Sweden)

    Maize Fernanda Bonim Singh

    2003-10-01

    Full Text Available Pacientes com hipotiroidismo freqüentemente apresentam sintomas músculo-esqueléticos e aumento de enzimas musculares, como a creatinaquinase (CK. Com o tratamento hormonal adequado é incomum ocorrer grandes aumentos de CK e manutenção de queixas musculares. Este trabalho relata o caso de uma paciente com hipotiroidismo, queixa de fraqueza muscular proximal e aumento de CK, sem melhora clínica com uso de levotiroxina. O diagnóstico de polimiosite foi confirmado por eletroneuromiografia e biópsia muscular. Após tratamento com prednisona e metotrexato, além de adequação da dose de levotiroxina, houve melhora clínica significativa e normalização da CK.Patients with hypothyroidism frequently present with musculoskeletal complaints and elevated serum levels of muscle enzymes, like creatine kinase (CK. With adequate hormonal treatment, the maintenance of high values of CK and muscle symptoms are uncommon. This work reports a 47-year-old woman with hypothyroidism, proximal muscle weakness and increased CK, who didn't improved with levothyroxine treatment. The diagnosis of polymyositis was based on electromyography and muscle biopsy. After treatment with prednisone plus methotrexate and increase of the levothyroxine dose, there were a clinical improvement and a normalization of CK values.

  13. Stressede børn

    DEFF Research Database (Denmark)

    Tonseberg, Signe; Thomsen, Pernille

    2016-01-01

    Stressede børn får det bedre, når deres krop får lov at tale. Fysioterapeut Pernille Thomsen lærer børn at bruge kroppen, så de trives bedre. Og der er ingen hokuspokus, for det hele bygger på naturvidenskabelig forskning i kroppens hormoner og stress....

  14. The RN to BSN Transition

    Directory of Open Access Journals (Sweden)

    Allison Brandt Anbari

    2015-11-01

    Full Text Available Approximately 60% of registered nurses (RNs still enter practice with an associate’s degree or diploma in nursing (ADN. Due to recommendations to change entry level to practice to the bachelor’s degree in nursing (BSN, there are now more than 700 RN to BSN programs in the United States. The purpose of this qualitative systematic review was to understand more about what occurs when an RN returns to school for a BSN and to develop a model of the transition. The qualitative findings of 19 research reports were included, which translates to approximately 445 RNs’ perspectives on the RN to BSN transition. A visual representation of the RN to BSN transition was also generated. A seamless transition of the RN to a BSN does not exist at this time. The results are useful to nurses, academicians, and health care organizations as they move to meet current recommendations.

  15. rn i lavindkomstfamilier

    DEFF Research Database (Denmark)

    Sievertsen, Hans Henrik; Montgomery, Christopher J.

    Denne rapport belyser sammenhængen mellem en opvækst i lavindkomst og vilkår senere i livet. Rapporten afdækker for det første, hvor mange børn der har været påvirket af lavindkomst over de seneste tre årtier, ved at give en oversigt over udviklingen i antallet og andelen af børn i lavindkomsthus...

  16. Comparação entre duas estratégias para a detecção precoce do hipotiroidismo congênito Comparison between two strategies for the precocious detection of congenital hypothyroidism

    Directory of Open Access Journals (Sweden)

    L.S. Ward

    1998-06-01

    Full Text Available OBJETIVO: Comparar em recém-nascidos (RN duas estratégias diferentes para o rastreamento do hipotiroidismo congênito (HC, a dosagem primária de TSH no sangue colhido do cordão umbilical (método 1 e a dosagem primária de T4 no sangue colhido por punção de calcanhar no 2º dia de internação (método 2. MÉTODOS: Os autores compararam as duas estratégias em 10.000 RN. Dosaram o TSH por método imunofluorimétrico sensível em papel de filtro e o T4 por radioimunoensaio em papel de filtro. A coleta de sangue do calcanhar foi realizada no 2º dia de vida RESULTADOS: Os dois programas diagnosticaram todos os casos de HC nos RN (4 casos, 1/2.500 RN. O índice de rechamada por coleta inadequada foi nulo no método 1 e de 8,5% (850 RN no método 2. O índice de reconvocação para confirmação de resultados foi de 0,06% (6 RN no método 1 e de 2,25% (225 RN no método 2; quando este método incluía também a dosagem suplementar de TSH, o índice baixou para 1,63% (163 RN. CONCLUSÃO: Os dados dos autores evidenciam a superioridade técnica da coleta de sangue a partir do cordão umbilical em relação à punção de calcanhar, assim como da dosagem primária de TSH em relação à de T4, uma vez que apresentam índices muito menores de reconvocação.OBJECTIVE: Compare two different strategies in newborn screening for congenital hypothyroidism, primary TSH in the umbilical cord blood (method 1 and primary T4 in blood collected from the heel in the 2nd day of life (method 2. METHODS: We compared both strategies in 10,000 newborns, measuring TSH by a sensitive immunofluorimetric assay and T4 by a radioimmunoassay. RESULTS: Both strategies detected all cases of hypothyroidism (4 cases, 1/2,500 newborns. The recalling index owing to insufficient amount of blood to perform the assays was zero in method 1 and 8.5% (850 newborns in method 2. The recalling index for confirmation of the results was 0.06% (6 newborns in method 1 and 2.25% (225

  17. ESTIMACIÓN DE LA PREVALENCIA DE HIPOTIROIDISMO SEGÚN DIFERENTES MÉTODOS: DOSIS DIARIA DEFINIDA, DOSIS DIARIA PRESCRITAY REGISTRO DE PACIENTES EN TRATAMIENTO

    Directory of Open Access Journals (Sweden)

    José Escribano-Serrano

    2014-01-01

    Full Text Available Fundamentos: El hipotiroidismo (HT es una patología frecuente en la práctica clínica diaria. No existen datos recientes sobre su prevalencia en España. El objetivo de este trabajo fue conocer su prevalencia en la provincia de Cádiz. Métodos: Se estudió el consumo del grupo terapéutico H03AA realizado en receta oficial por las unidades de Atención Primaria (AP de Cádiz, durante el año 2012. La prevalencia se estimó mediante tres métodos: la Dosis Diaria Definida (DDD, la Dosis Diaria Prescrita (DDP y el Registro Pacientes en Tratamiento (RPT. Los resultados se presentaron según sexo y edad con intervalos de confianza del 95%. Resultados: La prevalencia de HT durante 2012 en población mayor de 15 años de la provincia fue del 1,36% (IC95: 1,33%-1,38% mediante DDD, del 2,60% (IC95: 2,54%-2,66% mediante DDP y del 3,10% (IC95: 2,85%-2,93% mediante RPT. La mediana de edad fue de 56 años (rango intercuartílico 43 a 68 años. La prevalencia (RPT por sexo fue de 0,75% en hombres y 5,36% en mujeres [OR 7,26 (IC95: 7,02-7,52], siendo del 9,35% la correspondiente a mujeres de 51 a 70 años. Conclusiones: El método de estimación por rptdemuestra ser una herramienta más válida que el método DDD para evaluar la prevalencia de HT. El HT muestra, en nuestra provincia una prevalencia elevada con mayor afectación del sexo femenino.

  18. Enfermedad tiroidea autoinmune en pacientes colombianos con lupus eritematoso sistémico

    OpenAIRE

    Franco Aristizabal, Juan Sebastian; Amaya-Amaya, Jenny-Carolina; Molano-Gonzalez, Nicolas; Rodríguez-Jímenez, Mónica; Acosta-Ampudia, Yeny; Rojas-Villarraga, Adriana; Anaya, Juan-Manuel

    2015-01-01

    Objetivos: Determinar la prevalencia y los factores asociados con el desarrollo de hipotiroidismo autoinmune (HA) en una cohorte de pacientes con lupus eritematoso sistémico (LES), y analizar la información actual en cuanto a la prevalencia e impacto de la enfermedad tiroidea autoinmune y la autoinmunidad tiroidea en pacientes con LES. Métodos: Este fue un estudio realizado en dos pasos. Primero, un total de 376 pacientes con LES fueron evaluados sistemáticamente por la presencia de: 1)...

  19. A simple and versatile {sup 222}Rn/{sup 220}Rn exposure chamber

    Energy Technology Data Exchange (ETDEWEB)

    Yu, K.N. E-mail: peter.yu@cityu.edu.hk; Koo, V.S.Y.; Guan, Z.J

    2002-04-01

    A simple {sup 222}Rn/{sup 220}Rn exposure chamber is described. The chamber is made of acrylic and has a volume of 0.41 m{sup 3}. The {sup 222}Rn and {sup 220}Rn sources can be operated independently or simultaneously. The concentrations of {sup 222}Rn and {sup 220}Rn were monitored by a continuous alpha spectrometer called RAD7. The capability of alpha spectrometry has removed the mutual interference between {sup 220}Rn and {sup 222}Rn, which is a major problem in measuring {sup 220}Rn. Furthermore, the capability can also provide fast response to changes in the {sup 222}Rn level and {sup 220}Rn level in the exposure chamber, with temporal resolutions of about 20 and 2 min, respectively.

  20. Caracterização molecular do gene TPO em crianças Portuguesas com hipotiroidismo congénito causado por disormonogénese

    OpenAIRE

    Nogueira, Célia; Vaz Osório, Rui; Santos, Rosário; Jorge, Paula

    2014-01-01

    O hipotiroidismo congénito (HC) presente em cerca de 1:4000 recém-nascidos é considerado uma das principais causas, preveníveis, de atraso mental em crianças. O rastreio universal do HC realizado através do Programa Nacional de Diagnóstico Precoce, implementado em Portugal desde 1985, tem resultado num desenvolvimento normal da maioria das crianças com hipotiroidismo. Os defeitos congénitos da tiróide podem ser divididos em vários grupos que representam as alterações quer no desenvolvimento d...

  1. Nationwide indoor {sup 222}Rn and {sup 220}Rn map for India: a review

    Energy Technology Data Exchange (ETDEWEB)

    Ramachandan, T.V. [Ex-Environmental Assessment Division, Bhabha Atomic Research Center, Mumbai-450 085 (India); Sathish, L.A., E-mail: lasgayit@yahoo.com [Post Graduate Department of Physics, Government Science College, Nrupathunga Road, Bangalore 560 001 (India)

    2011-11-15

    Considering the role of radon in epidemiology, an attempt was made to make a nation-wide map of indoor {sup 222}Rn and {sup 220}Rn for India. More than 5000 measurements have been carried out in 1500 dwellings across the country comprising urban and nonurban locations. The solid state nuclear track detectors based twin cup {sup 222}Rn/{sup 220}Rn discrimination dosimeters were deployed for the measurement of indoor {sup 222}Rn, {sup 220}Rn and their progeny levels. The geometric means of estimated annual inhalation dose rate due to indoor {sup 222}Rn, {sup 220}Rn and their progeny in the dwellings was 0.94 mSvy{sup -1} (geometric standard deviation 2.5). It was observed that the major contribution to the indoor inhalation dose was due to indoor {sup 222}Rn and its progeny. However, the contribution due to indoor {sup 220}Rn and its progeny was not trivial as it was found to be about 20% of the total indoor inhalation dose rates. The indoor {sup 222}Rn levels in dwellings was significantly different depending on the nature of walls and floorings. - Highlights: > A countrywide survey on {sup 222}Rn and {sup 220}Rn levels for India was carried out in dwellings. > The regional values are obtained from the data on a few houses in that area. > Calibration factors for the measurements were derived experimentally as well as theoretically. > The {sup 222}Rn and {sup 220}Rn levels are represented on the maps.

  2. Linfoma tiroideo en paciente con tiroiditis de Hashimoto

    OpenAIRE

    Carmen Aravena G.; Daniela Aguayo Y.; Francisca Marín A.; Felipe Cayumil F.

    2014-01-01

    INTRODUCCIÓN: El linfoma tiroideo (LT) es una neoplasia infrecuente (menos del 1% de linfomas y menos del 2% de neoplasias tiroideas). Su incidencia es mayoritaria en mujeres, entre 60 y 75 años. La tiroiditis de Hashimoto es un importante factor de riesgo. El objetivo es destacar la importancia del estudio precoz del bocio rápidamente progresivo. PRESENTACIÓN DEL CASO: Hombre de 63 años, con antecedentes de hipertensión arterial, tabaquismo crónico activo e hipotiroidismo por tiroiditis de H...

  3. (220)Rn/(222)Rn isotope pair as a natural proxy for soil gas transport.

    Science.gov (United States)

    Huxol, Stephan; Brennwald, Matthias S; Henneberger, Ruth; Kipfer, Rolf

    2013-12-17

    Radon (Rn) is a naturally occurring radioactive noble gas, which is ubiquitous in soil gas. Especially, its long-lived isotope (222)Rn (half-life: 3.82 d) gained widespread acceptance as a tracer for gas transport in soils, while the short-lived (220)Rn (half-life: 55.6 s) found less interest in environmental studies. However, in some cases, the application of (222)Rn as a tracer in soil gas is complex as its concentrations can be influenced by changes of the transport conditions or of the (222)Rn production of the soil material. Due to the different half-lives of (220)Rn and (222)Rn, the distances that can be traveled by the respective isotopes before decay differ significantly, with (220)Rn migrating over much shorter distances than (222)Rn. Therefore, the soil gas concentrations of (220)Rn and (222)Rn are influenced by processes on different length scales. In laboratory experiments in a sandbox, we studied the different transport behaviors of (220)Rn and (222)Rn resulting from changing the boundary conditions for diffusive transport and from inducing advective gas movements. From the results gained in the laboratory experiments, we propose the combined analysis of (220)Rn and (222)Rn to determine gas transport processes in soils. In a field study on soil gases in the cover soil of a capped landfill we applied the combined analysis of (220)Rn and (222)Rn in soil gas for the first time and showed the feasibility of this approach to characterize soil gas transport processes.

  4. Minoritetsdanske børn i dagtilbud

    DEFF Research Database (Denmark)

    Tireli, Üzeyir

    2015-01-01

    Dagtilbud skal fremme børns trivsel, sundhed, udvikling og læring, Dette er et lovmæssig krav, som gælder for alle børn i Danmark. Minoritetsdanske børn anderledes grundvilkår giver dog store udfordringer for dagtilbuddene - for hvordan sikrer man, at også børn fra kulturelle minoriteter får opti...

  5. Mere Musik til Byens Børn

    DEFF Research Database (Denmark)

    Holst, Finn

    Førsteårsrapport på København Kommunes treårige projekt Mere Musik til Byens Børn - et pilotprojekt med henblik på at sikre, at flere børn i København får mulighed for at deltage i forskellige former for frivillig musikundervisning. Særligt fokuseres der på at fremme, at alle børn i hele byen...

  6. Delebørn i tal

    DEFF Research Database (Denmark)

    Ottosen, Mai Heide; Mathilde Hansen Stage, Sofie

    Hvordan påvirker samværsordninger børns hverdagsliv? Fungerer forældresamarbejdet anderledes, når der er en deleordning, og trives børn med udstrakt samvær bedre eller dårligere end andre skilsmissebørn? Med udgangspunkt i SFI’s Børneforløbsundersøgelse, som følger 6000 børn fra 1995, bliver der ...

  7. Retirement Financial Planning and the RN: An Integrative Literature Review.

    Science.gov (United States)

    Keele, Shanna; Alpert, Patricia T

    2015-10-01

    This integrative literature review examined the current research on RN retirement. The review identified 3 critical gaps in knowledge: (a) minimal knowledge regarding the economic impact on RN retirement, (b) incomplete information regarding the demographics of RN retirement, and (c) a scarcity of prospective longitudinal RN workforce studies. Future research must address these gaps to better address RN workforce sustainability.

  8. Geodesics in (Rn, d1

    Directory of Open Access Journals (Sweden)

    Mehmet KILIÇ

    2016-09-01

    Full Text Available The notion of geodesic, which may be regarded as an extension of the line segment in Euclidean geometry to the space we study in, has an important place in many branches of geometry, such as Riemannian geometry, Metric geometry, to name but a few. In this article, the concept of geodesic in a metric space will be introduced, then geodesics in the space (Rn, d1 will be characterized. Furthermore, some examples will be presented to demonstrate the effectiveness of the main result.

  9. Rastreio molecular do gene da peroxidase da tiróide em doentes com hipotiroidismo congénito

    OpenAIRE

    Rodrigues, Carina

    2004-01-01

    O Hipotiroidismo congénito (HC) primário afecta cerca de 1:3000 a 1:4000 recém-nascidos e pode ser causado por defeitos na ontogenia da tiróide ou na hormonogénese. Nas duas últimas décadas houve grandes avanços na genética molecular, o que levou à caracterização de genes que são essenciais para o normal desenvolvimento e produção de hormonas do eixo hipotálamo-pituitária-tiróide e para a biossíntese da hormona da tiróide. Mutações identificadas nestes genes permitiram explicar a patogénese m...

  10. {sup 222}Rn, {sup 220}Rn and their progeny concentrations in offices in Hong Kong

    Energy Technology Data Exchange (ETDEWEB)

    Yu, K.N. E-mail: appetery@city.edu.hk; Cheung, T.; Guan, Z.J.; Mui, B.W.N.; Ng, Y.T

    2000-04-01

    An active sampling system using charcoal canisters and an HPGe {gamma}-spectrometer was employed to survey {sup 222}Rn and {sup 220}Rn concentrations in 65 offices in Hong Kong, and a traditional method was used to record simultaneously the potential {alpha}-energy concentrations (PAEC) of {sup 222}Rn and {sup 220}Rn progeny at the same sites. The mean values of gas concentration, PAEC and equilibrium factor for {sup 222}Rn were 48{+-}32 Bq m{sup -3}, 5.2{+-}5.1 mWL and 0.38{+-}0.13, respectively, and the corresponding values for {sup 220}Rn were 14{+-}7 Bq m{sup -3}, 2.7{+-}2.1 mWL and 0.050{+-}0.016. These values were in general higher than those in dwellings in Hong Kong, which was due to the poorer fresh air exchange in offices. Factors affecting the concentrations of {sup 222}Rn, {sup 220}Rn and their progeny were also studied. The type of air conditioners and the indoor and outdoor temperature difference show some effects on {sup 222}Rn, {sup 220}Rn and progeny concentrations, while rainfall and relative humidity affect only the progeny concentrations.

  11. Radiological risk of actinon (/sup 219/Rn)

    Energy Technology Data Exchange (ETDEWEB)

    Crawford, D.J.

    1981-12-01

    The research reported was designed to provide information on the following subjects: (1) development of the functional relations between exposure to the /sup 219/Rn decay chain and pertinent health effects; (2) specification of the circumstances under which a significant concentration of the decay chain may occur; (3) recommendation of an exposure standard which will provide protection of the public from significant elevation of health effects; and (4) an assessment of the impact of /sup 219/Rn on determinations of the concentration of the /sup 222/Rn decay chain and/or its precursors.

  12. The costs of NCLEX-RN failure.

    Science.gov (United States)

    Roa, Michelle; Shipman, Debra; Hooten, Jack; Carter, Matthew

    2011-05-01

    Nursing programs across the country are challenged with producing qualified competent graduates who can successfully pass the National Council Licensure Examination (NCLEX) for Registered Nurses (RN) on the first attempt. The challenge has been prompted by the largest aging population striking the nation who will need nursing care and organizations who are demanding increasing numbers of competent nurses. However, graduates from nursing programs are failing the NCLEX-RN on the first attempt. The impact of NCLEX-RN failure is felt not only by the graduate student and their nursing program, but by healthcare organizations as well. Even though the impact is multi-faceted, a common theme of cost emerges.

  13. An extensive indoor {sup 222}Rn/{sup 220}Rn monitoring in North-East India

    Energy Technology Data Exchange (ETDEWEB)

    Dwivedi, K.K. [Department of Science and Technology, Embassy of India, 2536 Massachusetts Avenue, NW, Washington, DC 20008 (United States)]. E-mail: kkdwivedi@yahoo.com; Mishra, R. [Italian National Agency for Environmental Protection and Technical Services (APAT), Via. V. Brancati 48, Rome 00144 (Italy); Tripathy, S.P. [Italian National Agency for Environmental Protection and Technical Services (APAT), Via. V. Brancati 48, Rome 00144 (Italy)

    2005-11-15

    The behaviour of ubiquitous radon (Rn222), thoron (Rn220) and their progeny in the indoor atmosphere generally reflect a complex interplay between a number of processes, the most important of which are radioactive {alpha}-decay, ventilation, attachment to aerosols and deposition on the surfaces. The present work involved a long-term (1997-2000) passive monitoring of Rn222 and Rn220 in the indoor environment of the North-Eastern region of India. This region being a zone of high seismicity, the indoor radon and thoron measurement of the region will provide a better insight and a valuable database for any study related to radon and thoron anomalies.

  14. Lp (Rn) BOUNDEDNESS FOR THE MARCINKIEWICZ INTEGRAL

    Institute of Scientific and Technical Information of China (English)

    Hu Guoen

    2002-01-01

    Lp (R) boundedness is considered for the higher-dimensional Marcinkiewicz integral which was introduced by Stein. Some conditions implying the Lp (Rn) boundedness for the Marcinkiewicz integral are obtained.

  15. Intercomparison of Rn-222 determination from groundwater

    DEFF Research Database (Denmark)

    Vesterbacka, P.; Pettersson, H.; Hanste, U.-M.;

    2010-01-01

    An intercomparison exercise on Rn-222 determination in groundwater was organized between eight Nordic laboratories. The individual laboratory results were in most cases within 20% of the median value and within reported uncertainties. Considering the particular difficulties in preparing, transpor......An intercomparison exercise on Rn-222 determination in groundwater was organized between eight Nordic laboratories. The individual laboratory results were in most cases within 20% of the median value and within reported uncertainties. Considering the particular difficulties in preparing...

  16. Bilingualism. Bilingual education. Natal/RN

    OpenAIRE

    Orlando Vian Jr; Janaina Weissheimer; Lígia Leite; Rodrigo Queiroz; Wilka Soares; José Mauro Uchôa; James Vasconcelos

    2013-01-01

    This paper aims at presenting a preliminary account of the bilingual education in Natal/RN based on the notions of bilingual (GROSJEAN, 1982; WEI, 2000) and bilingual education (HAMERS; BLANC, 2000; FISHMAN; LOVAS, 1970; DALE; TANNER, 2012). The data were collected through questionnaires and interviews in four private bilingual schools in Natal/RN. Results indicate that most of the schools include two languages concomitantly in their bilingual curriculum with differences as regards the hour l...

  17. Intercomparison of Rn-222 determination from groundwater

    Energy Technology Data Exchange (ETDEWEB)

    Vesterbacka, P. [Radiation and Nuclear Safety Authority (STUK), Laippatie 4, 00880 Helsinki (Finland)], E-mail: pia.vesterbacka@stuk.fi; Pettersson, H. [Department of Radiation Physics, Faculty of Health Sciences, Linkoeping University, SE-58185 Linkoeping (Sweden); Hanste, U.-M. [Radiation and Nuclear Safety Authority (STUK), Laippatie 4, 00880 Helsinki (Finland); Jakobson, E. [Environmental Board, Radiation Safety Department, Kopli 76, 10416 Tallinn (Estonia); Kolstad, T. [Norwegian Radiation Protection Authority, Grini naeringspark 13, 1361 Osteras (Norway); Roos, P. [Riso National Laboratory, P.O. Box 49, DK-4000 Roskilde (Denmark); Ostergren, I. [Swedish Radiation Safety Authority (SSM), Solna Strandvaeg 96, 171 16 Stockholm (Sweden)

    2010-01-15

    An intercomparison exercise on Rn-222 determination in groundwater was organized between eight Nordic laboratories. The individual laboratory results were in most cases within 20% of the median value and within reported uncertainties. Considering the particular difficulties in preparing, transporting and analyzing Rn-222, being a gaseous radionuclide, the results indicate a high analytical capability among the Nordic laboratories. In order to maintain a high analytical quality, similar intercomparisons will also be needed in the future.

  18. Danske børn med sprogforstyrrelser

    DEFF Research Database (Denmark)

    Sundahl Olsen, Lone

    2013-01-01

    , italiensk, svensk og hebræisk osv. Det specifikke udfald af SLI afviger dog fra sprog til sprog, og der er på nuværende tidspunkt ikke udført systematisk forskning, der dokumenterer det specifikke udfald af SLI for danske børn. De primære mål med denne ph.d.-afhandling var at undersøge:  Grammatiske...... aldersmatchede og yngre børn med typisk sprogudvikling. Studie III viste, at sproglige vanskeligheder var signifikant associeret med dårlig arbejdshukommelse for børnene med SLI, men ikke for børnene med typisk sprogudvikling. Børnene med SLI havde dog alderssvarende hukommelsesmæssige færdigheder, når der var...... hos børn med SLI end den, der kendertegner børn, der følger en typisk sprogudvikling. Studiet indikerer dog, at børn med SLI ikke har generelle hukommelsesmæssige vanskeligheder, men at der formodentlig eksisterer en uoverensstemmelse mellem krav og ressourcer, hvor børnene med typisk sprogudvikling...

  19. Tamización para hipotiroidismo congénito en Cali y constitución de un centro piloto de referencia para la identificación temprana de la enfermedad.

    Directory of Open Access Journals (Sweden)

    Matilde de Bernal

    2009-11-01

    Full Text Available El diagnóstico precoz y el tratamiento del hipotiroidismo congénito (HC son esenciales para la maduración neurocognitiva adecuada del recién nacido. Se diseñó y se desarrolló un programa de tamizaje para este defecto congénito en el Laboratorio de Endocrinología, Facultad de Salud, Universidad del Valle y con la colaboración de la Secretaria Municipal de Cali se implementó desde octubre de 2001 en 6 instituciones prestadoras del servicio de salud (IPS de la Red de Salud de Cali, el Hospital Universitario del Valle y el Hospital San Juan de Dios. Este informe describe el funcionamiento del programa, los inconvenientes encontrados en su implementación y los resultados del mismo. Se recibieron 15.588 muestras secas colectadas de sangre del cordón umbilical en papel de filtro donde 69.4% provenían de los hospitales mencionados. En estas muestras se cuantificó la hormona estimulante del tiroides (TSH neonatal y los resultados >20 µU/ml fueron seguidos de determinaciones de T4 (tiroxina y TSH en suero para confirmación. Del total de muestras remitidas en papel, sólo se procesaron 15.236 (97.7% consideradas como muestras técnicamente adecuadas. De estas, 116 (0.76% bebés tuvieron tamizaje positivo pero tan sólo se pudieron localizar para confirmación 89 (76.7%. El diagnóstico se estableció en 5 niños con valores de TSH en suero entre 7.2-16 µU/ml y T4 entre 9.5 y 20.5 µg/dl. Además de las 352 muestras mal tomadas se recuperaron 184 obtenidas por venopunción en las cuales se procesó TSH y T4 en suero encontrándose 3 bebés con TSH entre 9.4 y 10.1 µU/ml y T4 entre 7.6 y 15.4 µg/dl. De los 8 bebés con TSH sérico elevado en 3, el TSH se normalizó espontáneamente. Hay 4 bebés hipotiroideos provenientes de Cali y uno de fuera de la ciudad, que están en seguimiento y tratamiento.

  20. Measurements of 222Rn and 220Rn with a Large Size Collector of Radon Progeny

    Institute of Scientific and Technical Information of China (English)

    Wu Qifan; Jia Wenyi; Fang Fang; Wang Jun; Cheng Jianping; Liu Guilin; Zhu Li

    2003-01-01

    Radon concentrations in high background radiation areas in the south are higher than those of others in China, especially 220Rn concentration is significantly high. Therefore, measurements of 222Rn and 220 Rn concentrations should be carried out there. This paper introduces a large size collector of radon progeny and its applications. The collector is a sheet of polyvinyl chloride fiber with electrostatics of (-500 V) - ( -700 V). Its size (60 mm in diameter) is larger than those of others (26 mm in diameter) that work with the same principle. The collector is more effective to adsorb radon progeny than most of others. The equipment of ZnS(Ag) Scintillation Counting System is available for large size collectors to detect radon progeny. Therefore, its sensitivity of measurement is higher than that of others.According to the different half lives of radon progeny, and based on both theory and experiments, a formula for discrimination and calculation of 222 Rn and 220Rn concentrations is deduced. The 222Rn and 220Rn concentrations were surveyed with electrostatic collectors of radon progeny on the campus of com-mercial school and some other areas in Hainan, southern China. Neither 222Rn nor 220Rn concentration was found significantly high. However, several faults underground were delineated. The collector is also used to study radon transportation. Results indicate that radon changes regularly with date when it has transported for a certain distance. Velocities of radon migration in the four media are quite different.Radon migrates more quickly in vertical tube than in the horizontal tube.

  1. Kampen om kreative børn

    DEFF Research Database (Denmark)

    Mehlsen, Camilla

    2010-01-01

    Tidens mantra er kreativitet og innovation, og stadig flere mener, at kimen til det kreative samfund bliver lagt i daginstitutionen. Den pædagogiske verden jubler, men glemmer, at det er et økonomisk ønske – ikke et menneskeligt – at børn udvikler kreative evner.......Tidens mantra er kreativitet og innovation, og stadig flere mener, at kimen til det kreative samfund bliver lagt i daginstitutionen. Den pædagogiske verden jubler, men glemmer, at det er et økonomisk ønske – ikke et menneskeligt – at børn udvikler kreative evner....

  2. Bilingualism. Bilingual education. Natal/RN

    Directory of Open Access Journals (Sweden)

    Orlando Vian Jr

    2013-12-01

    Full Text Available This paper aims at presenting a preliminary account of the bilingual education in Natal/RN based on the notions of bilingual (GROSJEAN, 1982; WEI, 2000 and bilingual education (HAMERS; BLANC, 2000; FISHMAN; LOVAS, 1970; DALE; TANNER, 2012. The data were collected through questionnaires and interviews in four private bilingual schools in Natal/RN. Results indicate that most of the schools include two languages concomitantly in their bilingual curriculum with differences as regards the hour load to work with each of the languages

  3. rn Utzon -Influences and Reinterpretation

    DEFF Research Database (Denmark)

    2012-01-01

    The Paper presents a study of Jørn Utzon's architecture, in terms of its response to both local context and transcultural influences. The paper shows Utzon to have been a precursor and direct influence upon subsequent developments within contemporary regional architecture.......The Paper presents a study of Jørn Utzon's architecture, in terms of its response to both local context and transcultural influences. The paper shows Utzon to have been a precursor and direct influence upon subsequent developments within contemporary regional architecture....

  4. rn og unges brug af internettet i fritiden

    DEFF Research Database (Denmark)

    Rattleff, Pernille; Tønnesen, Pia Hvid

    rn og unge anvender hovedsageligt informations- og kommunikationsteknologi, IKT, herunder internettet, i fritiden. I pressen er der med jævne mellemrum megen fokus på bekymringer relateret til børn og unges brug af internettet. Det synes derfor oplagt at undersøge børn og unges brug af internet...

  5. Long-term Analysis of Degenerate Parabolic Equations in RN

    Institute of Scientific and Technical Information of China (English)

    Gao Cheng YUE; Cheng Kui ZHONG

    2015-01-01

    Longtime behavior of degenerate equations with the nonlinearity of polynomial growth of arbitrary order on the whole space RN is considered. By using ?-trajectories methods, we proved that weak solutions generated by degenerate equations possess an (L2U (RN ), L2loc(RN ))-global attractor. Moreover, the upper bounds of the Kolmogorovε-entropy for such global attractor are also obtained.

  6. Comparison of outdoor activity size distributions of {sup 220}Rn and {sup 222}Rn progeny

    Energy Technology Data Exchange (ETDEWEB)

    Mohamed, A. [Physics Department, Faculty of Science, El-Minia University (Egypt)]. E-mail: amermohamed6@hotmail.com; El-Hussein, A. [Physics Department, Faculty of Science, El-Minia University (Egypt)

    2005-06-01

    Inhalation of {sup 222}Rn and {sup 220}Rn progeny from the domestic environment contributes the greatest fraction of the natural radiation exposure to the public. Dosimetric models are most often used in the assessment of human lung doses due to inhaled radioactivity because of the difficulty in making direct measurements. These models require information about the parameters of activity size distributions of thoron and radon progeny. The present study presents measured data on the attached and unattached activity size distributions of thoron and radon progeny in outdoor air in El-Minia, Egypt. The attached fraction was collected using a low-pressure Berner cascade impactor technique. A screen diffusion battery was used for collecting the unattached fraction. Most of the attached activities for {sup 222}Rn and {sup 220}Rn progeny were associated with aerosol particles of the accumulation mode. The activity size distribution of thoron progeny was found to be shifted to slightly smaller particle size compared to radon progeny.

  7. Dynamical Symmetry Breaking in RN Quantum Gravity

    Directory of Open Access Journals (Sweden)

    A. T. Kotvytskiy

    2011-01-01

    Full Text Available We show that in the RN gravitation model, there is no dynamical symmetry breaking effect in the formalism of the Schwinger-Dyson equation (in flat background space-time. A general formula for the second variation of the gravitational action is obtained from the quantum corrections hμν (in arbitrary background metrics.

  8. The Work of Jørn Utzon

    DEFF Research Database (Denmark)

    Carter, Adrian; Mullins, Michael

    2008-01-01

     This paper will present a study of Jørn Utzon's architecture, in terms of its response to both local context and transcultural influences. The paper will show Utzon to have been a precursor and direct influence upon subsequent developments within contemporary regional architecture. In his work...

  9. Irregular wavelet frames on L2(Rn)

    Institute of Scientific and Technical Information of China (English)

    YANG Deyun; ZHOU Xingwei

    2005-01-01

    In this paper, we present the conditions on dilation parameter {sj }j that ensure a discrete irregular wavelet system {Snj/2ψ(sj·-bk)}j∈(Z),k∈(Z)n to be a frame on L2(Rn),and for the wavelet frame we consider the perturbations of translation parameter b and frame function ψ respectively.

  10. (222)Rn, (220)Rn and other dissolved gases in mineral waters of southeast Brazil.

    Science.gov (United States)

    Bonotto, Daniel Marcos

    2014-06-01

    This paper describes the natural radioactivity due to (222)Rn and (220)Rn in mineral waters occurring at São Paulo and Minas Gerais states, Brazil, that are extensively used for drinking in public places, bottling and bathing purposes, among other. The measurements of these alpha-emitting radionuclides were also accompanied by the monitoring of temperature and some dissolved gases (O2, CO2 and H2S) in 75 water sources located in 14 municipalities of those states. Eight water sources yielded (220)Rn activity concentration values below the detection limit of 4 mBq/L. On other hand, (222)Rn activity concentration values exceeding the WHO guidance level of 100 Bq/L in drinking-water for public water supplies were found in two springs, named Villela and Dona Beja, whose discharge occurs in areas characterized by the presence of enhanced levels of natural radioelements in rocks. The obtained results were compared with the guidelines of the Brazilian Code of Mineral Waters (BCMW) that was established in 1945 and is still in force in the country. The (222)Rn and (220)Rn activity concentration data allowed perform dose radiation calculations based on the potential alpha energy concentration (PAEC), whose implications for health risk have been also considered in this paper. Copyright © 2014 Elsevier Ltd. All rights reserved.

  11. VULNERABILIDADE DA ZONA COSTEIRA DE PITITINGA/RN, BRASIL

    Directory of Open Access Journals (Sweden)

    Eduardo Queiroz de Lima

    2013-01-01

    Full Text Available Este trabajo presenta un estudio sobre la vulnerabilidad natural y ambiental de la región costera de Pititinga, Rio do Fogo/RN. Para el análisis de vulnerabilidad se consideraron los aspectos del medio físico incluyendo geología, geomorfología y pedología, el medio biótico fue representado por el tema vegetación y lo medio antrópico fue realizada con el tema uso y ocupación del suelo. El procedimiento metodológico para generar los mapas ha involucrado visitas de campo, foto-interpretación y análisis espacial en ambiente de Sistema de Informaciones Geográficas (SIG. Para generar el mapa de vulnerabilidad natural, se cruzaron los mapas del medio físico (un híbrido de los mapas de geología, pedología y geomorfología con el mapa de vegetación, mientras la vulnerabilidad ambiental consistió en el cruzamiento de los mapas de vulnerabilidad natural y de uso y ocupación del suelo. El mapa de vulnerabilidad natural señaló un predominio de los ambientes con baja (29,6% y media (42,4% vulnerabilidad, destacando las dunas frontales y móviles con mayor vulnerabilidad. Este resultado muestra la posibilidad de uso y ocupación de hasta 72% del territorio, través de un planteamiento y ordenamiento de las actividades. El mapa de vulnerabilidad ambiental reveló una preponderancia de áreas con vulnerabilidad muy bajas (29,2% y bajas (53,8%, dejándonos inferir que la área de estudio fue relativamente poco modificada por la acción humana.

  12. {sup 222}Rn and {sup 220}Rn concentrations in soil gas of Karkonosze-Izera Block (Sudetes, Poland)

    Energy Technology Data Exchange (ETDEWEB)

    Malczewski, Dariusz [Faculty of Earth Sciences, University of Silesia, Bedzinska 60, 41-200 Sosnowiec, Silesia (Poland)]. E-mail: malczews@us.edu.pl; Zaba, Jerzy [Faculty of Earth Sciences, University of Silesia, Bedzinska 60, 41-200 Sosnowiec, Silesia (Poland)]. E-mail: jzaba@interia.pl

    2007-07-01

    Soil gas {sup 222}Rn and {sup 220}Rn concentrations were measured at 18 locations in the Karkonosze-Izera Block area in southwestern Poland. Measurements were carried out in surface air and at sampling depths of 10, 40 and 80 cm. Surface air {sup 222}Rn concentrations ranged from 4 to 2160 Bq m{sup -3} and {sup 220}Rn ranged from 4 to 228 Bq m{sup -3}. The concentrations for 10 and 40 cm varied from 142 Bq m{sup -3} to 801 kBq m{sup -3} and 102 Bq m{sup -3} to 64 kBq m{sup -3} for {sup 222}Rn and {sup 220}Rn, respectively. At 80 cm {sup 222}Rn concentrations ranged from 94 Bq m{sup -3} to >1 MBq m{sup -3}. The {sup 220}Rn concentrations at 80 cm varied from 45 Bq m{sup -3} to 48 kBq m{sup -3}. The concentration versus depth profiles for {sup 222}Rn differed for soils developed on fault zones, uranium deposits or both. Atmospheric air temperature and soil gas {sup 222}Rn and {sup 220}Rn were negatively correlated. At sampling sites with steep slopes, {sup 220}Rn concentrations decreased with depth.

  13. A simple and versatile sup 2 sup 2 sup 2 Rn/ sup 2 sup 2 sup 0 Rn exposure chamber

    CERN Document Server

    Yu, K N; Guan, Z J

    2002-01-01

    A simple sup 2 sup 2 sup 2 Rn/ sup 2 sup 2 sup 0 Rn exposure chamber is described. The chamber is made of acrylic and has a volume of 0.41 m sup 3. The sup 2 sup 2 sup 2 Rn and sup 2 sup 2 sup 0 Rn sources can be operated independently or simultaneously. The concentrations of sup 2 sup 2 sup 2 Rn and sup 2 sup 2 sup 0 Rn were monitored by a continuous alpha spectrometer called RAD7. The capability of alpha spectrometry has removed the mutual interference between sup 2 sup 2 sup 0 Rn and sup 2 sup 2 sup 2 Rn, which is a major problem in measuring sup 2 sup 2 sup 0 Rn. Furthermore, the capability can also provide fast response to changes in the sup 2 sup 2 sup 2 Rn level and sup 2 sup 2 sup 0 Rn level in the exposure chamber, with temporal resolutions of about 20 and 2 min, respectively.

  14. Monte Carlo calculations of LR115 detector response to {sup 222}Rn in the presence of {sup 220}Rn

    Energy Technology Data Exchange (ETDEWEB)

    Nikezic, D.; Yu, K.N.

    2000-04-01

    The sensitivities (in m) of bare LR115 detectors and detectors in diffusion chambers to {sup 222}Rn and {sup 220}Rn chains are calculated by the Monte Carlo method. The partial sensitivities of bare detectors to the {sup 222}Rn chain are larger than those to the {sup 220}Rn chain, which is due to the higher energies of alpha particles in the {sup 220}Rn chain and the upper energy limit for detection for the LR115 detector. However, the total sensitivities are approximately equal because {sup 220}Rn is always in equilibrium with its first progeny, which is not the case for the {sup 222}Rn chain. The total sensitivity of bare LR115 detectors to {sup 222}Rn chain depends linearly on the equilibrium factor. The overestimation in {sup 222}Rn measurements with bare detectors caused by {sup 220}Rn in air can reach 10% in normal environmental conditions. An analytical relationship between the equilibrium factor and the ratio between track densities on the bare detector and the detector enclosed in chamber is given in the last part of the paper. This ratio is also affected by {sup 220}Rn, which can disturb the determination of the equilibrium factor.

  15. Effects of air conditioning, dehumidification and natural ventilation on indoor concentrations of {sup 222}Rn and {sup 220}Rn

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Thomas K.C.; Yu, K.N. E-mail: peter.yu@cityu.edu.hk

    2000-01-01

    A bedroom was selected for detailed measurements on {sup 220}Rn and {sup 222}Rn concentrations and environmental parameters including CO{sub 2} concentration, temperature and relative humidity. To simulate different sealing conditions, five conditions were artificially created in the sampling period of 25 consecutive days. It was concluded that natural ventilation is the most efficient way to lower the {sup 222}Rn levels, while air conditioning is the next. Dehumidification provides only a marginal reduction of {sup 222}Rn levels. The {sup 220}Rn concentrations are not affected by natural ventilation, air conditioner or dehumidification, and were all around 10 Bq m{sup -3}. There are no significant correlations between the {sup 220}Rn and {sup 222}Rn concentrations and environmental conditions such as CO{sub 2} concentrations, temperature, relative humidity and pressure.

  16. Early Indicators of NCLEX-RN performance.

    Science.gov (United States)

    Schooley, Angela; Kuhn, Jonathan Richard Dixon

    2013-09-01

    Health Education Systems Incorporated (HESI(™)) test results, course grades, and National Council Licensure Examination-Registered Nurse (NCLEX-RN(®)) outcomes of students in an associate degree nursing program at a midwestern public university were investigated. Statistical analysis revealed that introductory Fundamentals HESI test scores, more than either comprehensive HESI Exit Exam scores or other specialty HESI test scores, significantly predicted NCLEX-RN outcomes in this study (p < 0.05), while controlling for grade point average and high school percentile rank. In addition, of the general education courses and the nursing courses in the associate nursing program examined, Pediatric Nursing, Medical-Surgical Nursing, and Maternity Nursing course grades were found most statistically significantly influential of all the HESI test scores (p < 0.01).

  17. Martin Pärn Kunstihoone salongis

    Index Scriptorium Estoniae

    1999-01-01

    15. 03 Martin Pärna mööbligrupi "Martin" presentatsioon. 1998. a. pälvis M. Pärn Euroopa disainipreemia Best in the Best Rote Punkt, mida jagab Design Zentrum Nordrhein Westfalen. 1999. a. parim on M. Pärna Martela OY-le projekteeritud klapplaud. Aasta Design Team - Philipsi disaini meeskond. Äramärgitud tooted on näitusel Nordrhein Westfaleni Design Zentrumis

  18. Tropical intersection theory on R^n

    OpenAIRE

    Flossmann, Simon

    2014-01-01

    In these notes we survey the tropical intersection theory on R^n by deriving the properties for tropical cycles from the corresponding properties in Chow cohomology. For this we review the stable intersection product introduced by Mikhalkin and the push forward of tropical cycles defined by Allermann and Rau. Furthermore we define a pull back for tropical cycles based on the pull back of Minkowski weights. This pull back commutes with the tropical intersection product and satisfies the projec...

  19. Martin Pärn Kunstihoone salongis

    Index Scriptorium Estoniae

    1999-01-01

    15. 03 Martin Pärna mööbligrupi "Martin" presentatsioon. 1998. a. pälvis M. Pärn Euroopa disainipreemia Best in the Best Rote Punkt, mida jagab Design Zentrum Nordrhein Westfalen. 1999. a. parim on M. Pärna Martela OY-le projekteeritud klapplaud. Aasta Design Team - Philipsi disaini meeskond. Äramärgitud tooted on näitusel Nordrhein Westfaleni Design Zentrumis

  20. Tropical intersection theory on R^n

    OpenAIRE

    Flossmann, Simon

    2014-01-01

    In these notes we survey the tropical intersection theory on R^n by deriving the properties for tropical cycles from the corresponding properties in Chow cohomology. For this we review the stable intersection product introduced by Mikhalkin and the push forward of tropical cycles defined by Allermann and Rau. Furthermore we define a pull back for tropical cycles based on the pull back of Minkowski weights. This pull back commutes with the tropical intersection product and satisfies the projec...

  1. "Har andre plejebørn det som mig?"

    DEFF Research Database (Denmark)

    Warming, H.

    Bogen handler om livet som plejebarn, som det opleves af børnene selv. Den formidler resultaterne fra forskningsprojektet: "Projekt Børnetinget - et talerør for plejebørn", hvor 15 børn i familiepleje er blevet interviewet og hvor 107 nuværende og tidligere plejebørn har skrevet på hjemmesiden ww...

  2. Kort og klart: Børn i lavindkomstfamilier

    DEFF Research Database (Denmark)

    Jørgensen, Trine; Sievertsen, Hans Henrik; Montgomery, Christopher J.

    2015-01-01

    Hvor mange børn lever i familier med en lav indkomst? Er der blevet færre eller flere af dem i de seneste 30 år? Og hvordan går det børn i lavindkomstfamilier, når de bliver voksne? Det handler dette hæfte om. BUPL har bedt SFI undersøge, hvordan børn fra lavindkomstfamilier klarer sig som voksne...

  3. On the ^{221}Rn \\to ^{221}Fr Decay Scheme

    CERN Document Server

    Gromov, K Ya; Norseev, Yu V; Samatov, Zh K; Sergienko, V A; Fominykh, V I; Chumin, V G

    2002-01-01

    The results of investigating the ^{221}Rn beta^{-}-decay and the ^{225}Ac alpha-decay are compared. It is shown that ^{221}Fr levels at 145.9 and 393.2 keV are excited at the ^{221}Rn decay. Intensities and reduced probabilities of the beta^{-}-decay to the ^{221}Fr levels are determined. A conclusion is drawn that the parity of the ^{221}Rn ground state is positive.

  4. Ontologies in a project by Jørn Utzon

    DEFF Research Database (Denmark)

    Jørgensen, Lars Botin

    2003-01-01

    The paper has an overall theoretical and philosophical view on the actual topic: the architecture of Jørn Utzon, whereas Utzon himself often has stated that theories and hermeneutic approaches does not interest him at all. It is the aim of this paper to inscribe Jørn Utzon in a theoretical tradit...

  5. Recent RN graduate perceptions of educational preparation.

    Science.gov (United States)

    Candela, Lori; Bowles, Cheryl

    2008-01-01

    Nursing education programs strive to deliver curricula that prepare and transition graduates not just to survive but to truly thrive in any workplace environment. It is therefore important to reach out to those who have recently entered the nursing workforce to understand their views on educational preparation for practice. The purpose of this descriptive survey was to examine the perceptions of recent nurse graduates with regard to how well their educational programs prepared them for practice in their first jobs as registered nurses. Three hundred fifty-two nurses registered in the state of Nevada who graduated from a basic nursing program within the past five years completed the Survey of Nurses' Perceptions of Educational Preparation. Respondents perceived they were inadequately prepared in pharmacology, clinical practice, leadership/management, and the use of patient electronic medical records. In addition, respondents felt their programs prepared them more for success on the NCLEX-RN than for practice. Recommendations for addressing these issues are offered.

  6. Distance learning for the RN first assistant.

    Science.gov (United States)

    Degon, Ronald

    2010-01-01

    The number of online, distance-learning programs has increased to accommodate the needs of today's adult learners; these include new programs that feature perioperative courses for RN first assistants (RNFAs). Whereas the advantages of these programs include flexible schedules and the ability to participate at one's own pace, the disadvantages can include the lack of immediate access to faculty members who can answer questions or clarify information, and the added difficulty of learning a technical skill without hands-on training. The RNFA training program at Rock Valley College, Rockford, Illinois, is a hybrid training program that includes three phases: an online component, a hands-on workshop, and a clinical preceptorship. Copyright 2010 AORN, Inc. Published by Elsevier Inc. All rights reserved.

  7. The Work of Jørn Utzon

    DEFF Research Database (Denmark)

    Carter, Adrian; Mullins, Michael

    2008-01-01

    a fascination for the architectural legacies of foreign cultures. These influences include the architecture of the ancient Mayan civilisation, as well as that of China and Japan. Moreover Utzon is deeply influenced by the Islamic world, Isfahan particularly providing inspiration for the Sydney Opera House...... This paper will present a study of Jørn Utzon's architecture, in terms of its response to both local context and transcultural influences. The paper will show Utzon to have been a precursor and direct influence upon subsequent developments within contemporary regional architecture. In his work......, Utzon displays a Nordic sensibility to nature and integrity of design that strives for the attainment of quality in architecture and design, through the simple, honest yet noble synthesis of form, material and function, motivated by social values. To this essentially regional response, Utzon combines...

  8. Hipotiroidismo subclínico, ni tan asintomático, ni tan inofensivo Subclinical hypothyroidism neither so asymptomatic nor so harmless

    Directory of Open Access Journals (Sweden)

    Marelys Yanes Quesada

    2009-04-01

    Full Text Available El hipotiroidismo subclínico es la condición definida por la elevación de la hormona estimulante del tiroides, en presencia de secreción de hormonas tiroideas (T3 y T4 normales para el rango de referencia. Sus manifestaciones clínicas no son tan nulas como lo define el término subclínico. Si se hace un correcto interrogatorio y examen clínico se pueden encontrar alteraciones en diversos sistemas y órganos que perjudican la calidad de vida de los pacientes afectos e incrementan su morbimortalidad. Durante el embarazo, la entidad cobra especial atención debido a la repercusión en el feto de la alteración de su desarrollo. En los pacientes ancianos es de vital importancia su diagnóstico, debido al incremento de la prevalencia de la entidad en este grupo y la repercusión sobre la calidad de vida. El presente trabajo tiene como objetivo revisar las alteraciones clínicas que se puedan presentar en el hipotiroidismo subclínico, así como en situaciones especiales de la vida (embarazo y senectud.Subclinical hypothyroidism is the condition defined by the raise of thyroid-stimulating hormone in presence of normal thyroid hormone secretion (T3 and T4 for reference rank. Its clinical manifestations are not so nulls as defines the subclinical term. If an appropriate questioning and clinical examination is made it is possible to find alterations in many systems and organs harming the quality of life of patients affected and to increase its morbidity and mortality. During pregnancy this entity acquires a special attention due to repercussion on fetal development alteration. In elderly patients is essential its diagnosis due to entity prevalence increase on this group and the repercussion on quality of life. Aim of present paper is to review the clinical alterations that may be present in subclinical hypothyroidism, as well as in special situations of life (pregnancy and senescence.

  9. {sup 220}Rn and its progeny in dwellings of Korea

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Chang-Kyu [International Atomic Energy Agency, Agency' s Laboratories, A-1400, Vienna (Austria)], E-mail: chang.kyu.kim@iaea.org; Kim, Young-Jae; Lee, Hwa-Yong; Chang, Byung-Uck [Korea Institute of Nuclear Safety, P.O. Box 114, Yusong, Daejeon 305-338 (Korea, Republic of); Tokonami, Shinji [Radon Research Group, National Institute of Radiological Sciences (Japan)

    2007-09-15

    Concentrations of {sup 220}Rn and its progeny were measured in 450 dwellings from 2002 to 2004 using two kinds of simple passive {sup 222}Rn and {sup 220}Rn monitors, Radopot{sup TM} and {sup 220}Rn progeny monitor. The annual arithmetic mean (AM) and geometric mean (GM) of {sup 220}Rn concentrations were 40.4 and 10.7Bqm{sup -3}, respectively. The annual arithmetic mean (AM) of EEC{sub Tn} concentration was 0.89{+-}0.70Bqm{sup -3}, and the annual geometric mean (GM) was 0.60Bqm{sup -3} (95% confidence interval: 0.43-0.78Bqm{sup -3}). The concentrations of {sup 220}Rn in Korean-style houses built with mud block were about two times higher than those in apartments. The average annual effective dose due to inhalation exposure to {sup 220}Rn and its progeny in dwellings was 0.25mSvy{sup -1}.

  10. Behavior of {sup 220}Rn progeny in diffusion chamber

    Energy Technology Data Exchange (ETDEWEB)

    Nikezic, D. [Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000 Kragujevac (Serbia)]. E-mail: nikezic@kg.ac.yu; Stevanovic, N. [Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000 Kragujevac (Serbia)

    2007-01-01

    The distribution of {sup 220}Rn (thoron) within the cylindrical diffusion chamber decreases exponentially with the distance from the entry filter. The first {sup 220}Rn progeny {sup 216}Po follows its parent due to its very short half life. Other {sup 220}Rn progeny are almost completely deposited, but the deposition is not uniform. Deposition occurs on all internal surfaces of cylinder including vertical wall as well as its bases. Deposition on the upper and lower base is enhanced in the middle and drops toward to the end while the deposition on 'vertical' wall is larger closer to the entry membrane.

  11. A model to explain simultaneously the {sup 222}Rn and {sup 220}Rn emanation from thin electrodeposited sources

    Energy Technology Data Exchange (ETDEWEB)

    Vargas, M.J.M. Jurado. E-mail: mjv@unex.es

    2000-06-11

    In thin radioactive sources, loss of radon by emanation is a very common phenomenon, especially in sources made by electrodeposition. A quantification of this effect in radium sources can be easily developed by using a simple model that assumes a radon diffusion term in the ingrowth equations. By measuring the corresponding Rn/Ra activity ratio, a constant diffusion factor can be determined which represents the Rn emanation from the whole source. However, this simple model cannot explain simultaneously the {sup 222}Rn and {sup 220}Rn diffusion produced in a thin source, because it gives diffusion factors that are different by many orders of magnitude for these two isotopes, while these values must be fairly close. In this paper, a new model of diffusion is proposed, which includes a linear dependence of the diffusion factor on the depth of Rn nuclides in the source. This new model has been applied to radium electrodeposited sources and allows us to explain satisfactorily both the {sup 220}Rn/{sup 224}Ra and {sup 222}Rn/{sup 226}Ra activity ratios observed in thin sources.

  12. Sensitivity of LR115 detector in diffusion chamber to {sup 222}Rn in the presence of {sup 220}Rn

    Energy Technology Data Exchange (ETDEWEB)

    Koo, V.S.Y.; Yip, C.W.Y.; Ho, J.P.Y.; Nikezic, D.; Yu, K.N. E-mail: peter.yu@cityu.edu.hk

    2002-06-01

    Determination has been made of the sensitivity of LR115 type 2-track detectors (in units of m) to {sup 222}Rn, measured in the presence of {sup 220}Rn. Measurements have been made by means of a widely used diffusion chamber while Monte Carlo simulations have also been conducted. The experimentally derived sensitivities for {sup 222}Rn and {sup 220}Rn were found to be 0.470{+-}0.022 and 0.486{+-}0.042 m, respectively. For Monte Carlo simulations, the sensitivities to {sup 222}Rn gas were found to range from 0.618x10{sup -2} m (assuming that all {sup 218}Po progeny decay before deposition onto the internal walls of the diffusion chamber) to 0.405x10{sup -2} m (assuming that all {sup 218}Po progeny are deposited on the internal walls of the same containment vessel before decaying). The sensitivity to {sup 220}Rn gas of 0.465x10{sup -2} m found from Monte Carlo simulations agrees to within uncertainty with experimental findings. The experimentally derived sensitivity value for {sup 222}Rn indicates that 30% of the {sup 218}Po progeny decay before deposition onto the internal walls of the diffusion chamber.

  13. Measurements of {sup 222}Rn and{sup 220}Rn with a large size collector of radon progeny

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Qifan; Cheng, Jianping; Liu, Guilin; Zhu, Li [Tsinghua Univ., Beijing (China); Ja, Wenyi; Fang, Fang [Chengdu Univ. of Technology, Chengdu (China)

    2002-07-01

    People have paid more attention to radon since 1980s. Radon concentrations in high background radiation areas in the south are higher than others in China, especially {sup 220} Rn concentration is significantly high. Therefore, measurement of {sup 222} Rn and {sup 220} Rn concentration should be carried out there. I will introduce a large size collector of radon progeny and its applications in this paper. The collector is a sheet of polyvinyl chloride fibre with electrostatics of -500V {approx} -700V. Its size (60mm in diameter) is larger than others (26mm in diameter) that work as the same principle. The collector is more effective to adsorb radon progeny than most of others. The equipment of ZnS(Ag) Scintillation Counting System is available for large size collectors to detect radon progeny. Therefore its sensitivity of measurement is high than others. According to the different half life of radon progeny and based on both theory and experiment, a formula for discrimination and calculation of {sup 222} Rn and {sup 220} Rn concentrations was deduced. The {sup 222} Rn and {sup 220} Rn concentrations were surveyed with electrostatic collectors of radon progeny on the campus of commercial school and some other areas in Hainan, southern China. Neither {sup 222} Rn nor {sup 220} Rn concentrations were found significant high. However several faults underground were delineated. The collector is also used to study radon transportation. Results indicate that radon changes regularly with date when it has transported for a certain distance. Velocities of radon migration in the four media are quite different. Radon migrates more quickly in vertical tube than in the horizontal tube.

  14. Boundedness of Marcinkiewicz integrals and their commutators in H1(Rn×Rm)

    Institute of Scientific and Technical Information of China (English)

    YANG; Dachun

    2006-01-01

    The authors establish the boundedness of Marcinkiewicz integrals from the Hardy space H1(Rn × Rm) to the Lebesgue space L1(Rn × Rm) and their commutators with Lipschitz functions from the Hardy space H1(Rn × Rm) to the Lebesgue space Lq(Rn × Rm) for some q>1.

  15. Predicting NCLEX-RN success in a diverse student population.

    Science.gov (United States)

    Alameida, Marshall D; Prive, Alice; Davis, Harvey C; Landry, Lynette; Renwanz-Boyle, Andrea; Dunham, Michelle

    2011-05-01

    Many schools of nursing have implemented standardized testing using platforms such as those developed by Assessment Technologies Institute (ATI) to better prepare students for success on the National Council Licensure Examination for Registered Nurses® (NCLEX-RN). This study extends and replicates the research on standardized testing to predict first-time pass success in a diverse student population and across two prelicensure program types. The final sample consisted of 589 students who graduated between 2003 and 2009. Demographic data, as well as academic performance and scores on the ATI RN Comprehensive Predictor, were analyzed. The findings in this study indicate that scores on the ATI RN Comprehensive Predictor were positively, significantly associated with first-time pass success. Students in jeopardy of failing the NCLEX-RN on their first attempt can be identified prior to graduation and remediation efforts can be strengthened to improve their success.

  16. Student achievement and NCLEX-RN success: Problems that persist.

    Science.gov (United States)

    Carrick, Jo Anne

    2011-01-01

    While most nurse graduates are successful on the NCLEX-RN licensure examination, certain students continue to be at risk for failure. To understand the complexity of at-risk students and NCLEX-RN failure, systems theory was used to analyze the interdependency of the nursing education system and the nursing student learning system. From this perspective, these problems relate to flaws in perceived learning gaps and student outcome measures. Predicting NCLEX-RN success is further complicated because students leave the teaching system prior to taking the exam, making them vulnerable to other influencing variables. The student's approach to learning (SAL) theory was used to aid in identifying effective strategies. The literature supports this theoretical approach, which targets changing the teaching and learning environment. However, there is limited research on the nursing student's approach to learning, on the benefits of innovative student-centered learning environments, and the most effective use of NCLEX-RN assessment products.

  17. Contemplative Practices, Self-efficacy, and NCLEX-RN Success.

    Science.gov (United States)

    Fiske, Elizabeth

    2016-10-04

    Despite program completion, not all graduates are successful on the National Council Licensure Examination for Registered Nurses (NCLEX-RN). Contemplative practices such as meditation and guided imagery were added to an NCLEX-RN preparatory course. The difference between self-efficacy scores at the beginning and end of the course was statistically significant. Students reported that the contemplative activities were beneficial, and they would use these activities again in the future.

  18. Post-graduation factors predicting NCLEX-RN success.

    Science.gov (United States)

    Beeman, Pamela Butler; Waterhouse, Julie Keith

    2003-01-01

    The academic and nonacademic factors that influence nursing students' success on the licensure exam have been widely reported. However, many questions remain as to why certain candidates fail the exam. This pilot study explores postgraduation influences on the NCLEX-RN.(R) Factors such as length and type of study, work hours, review course participation, sleep, and stress were recorded using the newly developed NCLEX Preparation Survey. Results suggest both expected and unexpected relationships between these factors and NCLEX-RN mastery.

  19. Assumptions and realities of the NCLEX-RN.

    Science.gov (United States)

    Aucoin, Julia W; Treas, Leslie

    2005-01-01

    Every three years the National Council of State Boards of Nursing conducts a practice analysis to verify the activities that are tested on the licensure exam (NCLEX-RN). Faculty can benefit from information in the practice analysis to ensure that courses and experiences adequately prepare graduates for the NCLEX-RN. This summary of the practice analysis challenges common assumptions and provides recommendations for faculty.

  20. A comprehensive approach to NCLEX-RN success.

    Science.gov (United States)

    Davenport, Nancy C

    2007-01-01

    Nurse educators face many challenges in their efforts to prepare graduates for success on the National Council Licensure Examination for Registered Nurses (NCLEX-RN). A proactive, coordinated, and comprehensive effort to prepare graduates for NCLEX-RN success developed as an essential element in curriculum planning and delivery by a university-based associate degree program is described. The plan incorporates interventions in each semester of the curriculum and uses a commercially available standardized assessment and remediation package.

  1. Standardized mastery content assessments for predicting NCLEX-RN outcomes.

    Science.gov (United States)

    Emory, Jan

    2013-01-01

    Nurse educators need predictors of failure for early intervention. This study investigated the predictability of fundamentals, mental health, and pharmacology standardized assessment scores to identify the risk of baccalaureate students' failure on the NCLEX-RN. Using logistic regression the pharmacology assessment score was predictive with 73.7% accuracy. Use of the pharmacology assessment can assist in early identification of at-risk students in efforts to better prepare for the NCLEX-RN examination.

  2. Sprog hos børn med autisme

    DEFF Research Database (Denmark)

    Brynskov, Cecilia

    2010-01-01

    Spredningen i sproglige færdigheder hos børn med autisme er enorm. Dette forhold vanskeliggør forskning inden for området, og omvendt bevirker forskningen og de valg – og ikke mindst fravalg – som autismeforskere er nødt til at foretage, at gruppen af børn med autisme kommer til at fremstå mere...

  3. Inddragelse af børn - hvorfor og hvordan?

    DEFF Research Database (Denmark)

    Jensen, Jeanette Magne; Pedersen, Ulla; Larsen, Henrik M.

    Denne bog er en fortælling om, hvordan otte udviklingsprojekter i København har medinddraget og samarbejdet med børn og unge for at øge deres handlekompetence og aktivitet. Bogen giver ideer til dem, der ønsker at blive klogere på, hvordan man i højere grad kan inddrage børn i den daglige praksis...

  4. Margus Pärn : turuliidri koht on Maximale jõukohane 4-5 aastaga / Margus Pärn ; interv. Viljar Rääsk

    Index Scriptorium Estoniae

    Pärn, Margus

    2008-01-01

    Leedu jaekaubandusketi Maxima Eesti juht Margus Pärn vastab küsimustele, mis puudutavad Eesti jaekaubandusturgu ja Maxima positsiooni selles, ettevõtte laienemist ning turuliidri rolli saavutamise võimalust. Lisa: Margus Pärn. Tabel: Maxima

  5. RN-BSN Students' Perceptions of the Differences in Practice of the ADN- and BSN-Prepared RN.

    Science.gov (United States)

    Matthias, April D; Kim-Godwin, Yeoun Soo

    2016-01-01

    This study explored RN-BSN students' perceptions of practice differences between nurses prepared with an ADN and BSN. Five themes were identified in 20 students' discussion posts: "a nurse is a nurse" at the bedside, beyond the bedside, BSN wanted, digging deeper, and appraisal. Results illustrate the need for educators to assist nurses in translating the differentiated educational competencies to the practice role of the bedside RN.

  6. An automatic static chamber for continuous {sup 220}Rn and {sup 222}Rn flux measurements from soil

    Energy Technology Data Exchange (ETDEWEB)

    Lehmann, B.E. E-mail: lehmann@climate.unibe.ch; Ihly, B.; Salzmann, S.; Onen, F.; Simon, E

    2004-02-01

    A closed-circuit analytical system for the (quasi)-continuous measurement f radon fluxes from soil consisting of a static accumulation chamber and two radon detectors operated in series is described. The first detector measures he ({sup 220}Rn+{sup 222}Rn) activity, the second one the remaining {sup 222}Rn activity after the {sup 220}Rn atoms (half-life 56 s) have decayed when the air asses a delay volume between the two detectors. A step-motor driven cover loses the chamber at the beginning of a flux measurement interval of e.g. 3 . In between measurements the chamber remains open to maintain soil and vegetation inside the chamber as closely as possible to the conditions outside. A mathematical description of the temporal evolution of Rn activities in the analytical system is presented from which procedures are derived to calculate Rn fluxes (Bq m{sup -2} s{sup -1}) from the measured activities n the two detectors. Examples from field tests illustrate the performance of he experimental set-up and possible complications due to technical and/or environmental difficulties.

  7. Monte Carlo simulation of semiconductor detector response to (222)Rn and (220)Rn environments.

    Science.gov (United States)

    Irlinger, J; Trinkl, S; Wielunksi, M; Tschiersch, J; Rühm, W

    2016-07-01

    A new electronic radon/thoron monitor employing semiconductor detectors based on a passive diffusion chamber design has been recently developed at the Helmholtz Zentrum München (HMGU). This device allows for acquisition of alpha particle energy spectra, in order to distinguish alpha particles originating from radon and radon progeny decays, as well as those originating from thoron and its progeny decays. A Monte-Carlo application is described which uses the Geant4 toolkit to simulate these alpha particle spectra. Reasonable agreement between measured and simulated spectra were obtained for both (220)Rn and (222)Rn, in the energy range between 1 and 10 MeV. Measured calibration factors could be reproduced by the simulation, given the uncertainties involved in the measurement and simulation. The simulated alpha particle spectra can now be used to interpret spectra measured in mixed radon/thoron atmospheres. The results agreed well with measurements performed in both radon and thoron gas environments. It is concluded that the developed simulation allows for an accurate prediction of calibration factors and alpha particle energy spectra.

  8. Measurements of Rn-222, Rn-220 and their decay products in the environmental air of the high background radiation areas in Yangjiang, China.

    Science.gov (United States)

    Yuan, Y; Morishima, H; Shen, T; Koga, T; Wei, L; Sugahara, T

    2000-10-01

    For the renewal of dose estimation from internal irradiation in the high background radiation areas (HBRA) of Yangjiang, the measurements of radon, thoron and their decay products in the environmental air were conducted, including: (1) integrating measurements of Rn-222 and Rn-220 concentrations; (2) eqilibrium factor F for Rn-222 and alpha-potential energy value of Rn-220; (3) external gamma radiation in places where radon measurements were undertaken; (4) cumulative exposure to indoor radon for each family in a case-control study on lung cancer. The Rn-Tn cup monitor method was used for the integrating measurement of Rn-222 and Rn-220 concentration. An alpha track detector was used for the integration measurement of Rn-222 concentration in the case-control study on lung cancer. The results of measurements show that although the investigated areas are located between the Equator and the Tropic of Cancer, and that people live in well-ventilated dwellings, the concentrations of radon, especially of Rn-220 are significantly higher in the indoor air of HBRA than those in the control area. The value of equilibrium factors for Rn-222, the alpha potential energy of decay products from Rn-222 and Rn-220 are determined.

  9. Measurements of Rn-222, Rn-220 and their decay products in the environmental air of the high background radiation areas in Yangjiang, China

    Energy Technology Data Exchange (ETDEWEB)

    Yuan Yongling; Shen Tong [Labor Hygiene Inst. of Human Province, Changsha (China); Morishima, Hiroshige; Koga, Taeko; Wei Luxin; Sugahara, Tsutomu

    2000-10-01

    For the renewal of dose estimation from internal irradiation in the high background radiation areas (HBRA) of Yangjiang, the measurements of radon, thoron and their decay products in the environmental air were conducted, including: integrating measurements of Rn-222 and Rn-220 concentrations; equilibrium factor F for Rn-222 and alpha-potential energy value of Rn-220; external gamma radiation in places where radon measurements were undertaken; cumulative exposure to indoor radon for each family in a case-control study on lung cancer. The Rn-Tn cup monitor method was used for the integrating measurement of Rn-222 and Rn-220 concentration. An alpha track detector was used for the integration measurement of Rn-222 concentration in the case-control study on lung cancer. The results of measurements show that although the investigated areas are located between the Equator and the Tropic of Cancer, and that people live in well-ventilated dwellings, the concentrations of radon, especially of Rn-220 are significantly higher in the indoor air of HBRA than those in the control area. The value of equilibrium factors for Rn-222, the alpha potential energy of decay products from Rn-222 and Rn-220 are determined. (author)

  10. The Dichotomy Between Traces on d-sets Γ in Rn and the Density of D(Rn\\Γ) in Function Spaces

    Institute of Scientific and Technical Information of China (English)

    Hans TRIEBEL

    2008-01-01

    A space Aspq(Rn) with A = B or A = F and s ∈ R, 0 < p,q < ∞ either has a trace in Lp(Γ), where Γ is a compact d-set in Rn with 0 < d < n, or D(Rn\\Γ) is dense in it. Related dichotomy numbers are introduced and calculated.

  11. Using 220Rn to calibrate liquid noble gas detectors

    CERN Document Server

    Kobayashi, M; Takeda, A; Kishimoto, K; Moriyama, S

    2016-01-01

    In this paper, we describe 220Rn calibration source that was developed for liquid noble gas detectors. The key advantage of this source is that it can provide 212Bi-212Po consecutive events, which enables us to evaluate the vertex resolution of a detector at low energy by comparing low-energy events of 212Bi and corresponding higher-energy alpha-rays from 212Po. Since 220Rn is a noble gas, a hot metal getter can be used when introduced using xenon as the carrier gas. In addition, no long-life radioactive isotopes are left behind in the detector after the calibration is complete; this has clear advantage over the use of 222Rn which leaves long- life radioactivity, i.e., 210Pb. Using a small liquid xenon test chamber, we developed a system to introduce 220Rn via the xenon carrier gas; we demonstrated the successful introduction of 6 times 10^2 220Rn atoms in our test environment.

  12. Småbørn i interaktion

    DEFF Research Database (Denmark)

    Fisker, Tine Basse

    Småbørn i interaktion. En undersøgelse af socialt udviklingspotentiale og muligheder for interaktion for småbørn med autisme i forskellige pædagogiske og organisatoriske miljøer. På baggrund af kvalitativ, naturalistisk empiri, i form af observationer, videooptagelser, interviews og samtaler, søges...... forståelser og indsigter i børns interaktioner og relationer, særligt i forhold til børn med autisme. Børnenes sociale potentiale, muligheder og forhindringer for social interaktion diskuteres ud fra Vygotskys lærings- og udviklingsteori og Sommers samværsbegreber, samt et generelt metateoretisk...... relationistisk udviklingsperspektiv. Indsigterne søges belyst ud fra en række overordnede problemstillinger: - På hvilke måder indgår børn med autisme i interaktion med andre børn med og uden autisme? På hvilke måder adskiller denne interaktion sig fra typiske børns interaktion og ligner den det billede, som kan...

  13. COOMET.RI(II)-S1.Rn-222 (169/UA/98): Rn-222 volume activity comparison

    Energy Technology Data Exchange (ETDEWEB)

    Skliarov, V. [National Scientific Centre, Institute of Metrology (NSC IM), Kharkiv (Ukraine); Rottger, A.; Honig, A. [Physikalisch-Technische Bundesanstalt (PTB), Braunschweig (Germany); Korostin, S.; Kuznetsov, S. [All-Russian Scientific Research Institute of Physical, Technical and Radio Measurements (VNIIFTRI), Moscow Region, Mendeleyevo (Russian Federation); Lapenas, A. [Latvian National Metrology Centre Ltd, Radiation Metrology and Testing Centre (RMTC), Salaspils (Latvia); Milevsky, V.; Ivaniukovich, A. [Belarussian State Institute of Metrology (BelGIM), Minsk (Belarus); Kharitonov, I.; Sepman, S. [D I Mendeleyev Institute of metrology (VNIIM), Saint Petersburg (Russian Federation)

    2009-06-15

    According to a first program, a supplementary comparison of Rn-222 volume activity was drawn up as a bilateral supplementary comparison between NSC 'Institute of Metrology', Ukraine, and VNIIFTRI, Russia. It took place in March 2005. In April 2005, at the 5. meeting of COOMET held in Braunschweig (Germany), representatives of these institutes exchanged data which showed the comparability of the national standards of Ukraine and Russia for the check points. During the discussion of the procedure some other institutes decided to join the comparison program, which was extended to BelGIM (Belarus), PTB (Germany), VNIIM (Russia) and RMTC (Latvia). The national standards of volume activity of radon-222 were thus calibrated using one standard radon radiometer as the transfer standard. Results are shown in the Final Report of the comparison. (authors)

  14. Reminiscences regarding Professor R.N. Christiansen

    Science.gov (United States)

    Swarup, Govind

    2008-11-01

    In this short paper I describe my initiation into the field of radio astronomy fifty years ago, under the guidance of Professor W.N. ('Chris') Christiansen, soon after I joined the C.S.I.R.O.'s Division of Radiophysics (RP) in Sydney, Australia, in 1953 under a 2-year Colombo Plan Fellowship. During the early 1950s Christiansen had developed a remarkable 21 cm interferometric grating array of 32 east-west aligned parabolic dishes and another array of 16 dishes in a north-south direction at Potts Hill. Christiansen and Warburton used these two arrays to scan the Sun strip-wise yielding radio brightness distribution at various position angles. During a three month period I assisted them in making a 2-dimensional map of the Sun by a complex Fourier transform process. In the second year of my Fellowship, Parthasarathy and I converted the 32-antenna east-west grating array to study solar radio emission at 60cm. During this work, I noticed that the procedure adopted by Christiansen for phase adjustment of the grating array was time consuming. Based on this experience, I later developed an innovative technique at Stanford in 1959 for phase adjustment of long transmission lines and paths in space. In a bid to improve on the method used by Christiansen to make a 2-dimensional map of the Sun from strip scans, I suggested to R.N. Bracewell in 1962 a revolutionary method for direct 2-dimensional imaging without Fourier transforms. Bracewell and Riddle developed the method for making a 2-dimensional map of the Moon using strip scans obtained with the 32 element interferometer at Stanford. The method has since revolutionized medical tomography. I describe these developments here to highlight my initial work with Christiansen and to show how new ideas often are developed by necessity and have their origin in prior experience! The 32 Potts Hill solar grating array dishes were eventually donated by the C.S.I.R.0. to India and were set up by me at Kalyan near Mumbai, forming the

  15. Presentación temprana de hipertiroidismo y diabetes mellitus tipo I en un paciente con Síndrome de Down: Reporte de un caso

    OpenAIRE

    Del Águila Otárola,Claudia; Durand Torres,Ricardo; De los Santos La Torre, Miguel; Pinto Ibarcena,Paola; Ramos Rodríguez,Karen; Del Águila Villar,Carlos

    2016-01-01

    El síndrome de Down es una alteración cromosómica que se asocia con un aumento de la incidencia de una serie de enfermedades autoinmunes. Dentro de estas destacan las de origen endocrino como la patología tiroidea, siendo el hipotiroidismo el más común. Los casos de hipertiroidismo son raros y más aún asociados a diabetes mellitus, siendo la edad de presentación tardía. Reportamos el caso de un niño de 2 años de edad con antecedente de síndrome de Down que es diagnosticado de diab...

  16. Regular n-simplices in Rn with vertices in Zn

    Institute of Scientific and Technical Information of China (English)

    XIA Jianguo; QIN Hourong

    2004-01-01

    In this paper the Ⅰ and Ⅱ regular n-simplices are introduced. We prove that the sufficient and necessary conditions for existence of an Ⅰ regular n-simplex in Rn are that if n is even then n= 4m(m + 1), and if n is odd then n= 4m + 1 with that n + 1 can be expressed as a sum of two integral squares or n = 4m - 1, and that the sufficient and necessary condition for existence of a Ⅱ regular n-simplex in Rn is n= 2m2 - 1 or n= 4m(m+1)(m ( ) N). The connection between regular n-simplex in Rn and combinational design is given.

  17. Til julefrokost med Bjørn & Okay

    DEFF Research Database (Denmark)

    Smith-Sivertsen, Henrik

    2012-01-01

    I denne artikel vises med udgangspunkt i en beskrivelse af et specifikt arrangement med det danske danseorkester Bjørn & Okay, hvordan man optræder inden for denne særlige musiktradition. Bjørn & Okays performative udgangspunkt er, at de, trods en status som landskendt orkester med mange hits, i ...... the audience and constantly telling them what to do. At the same time he and the other musicians actively bond with the audience, both onstage and offstage, which helps building the spirit of community, which is the clear goal of the musical performance....

  18. A community-wide RN refresher course: a collaborative success.

    Science.gov (United States)

    White, J; Poirrier, G P

    1995-01-01

    By combining forces, nurse educators and practitioners developed a unique RN refresher course that provided a supportive environment for successful reentry into professional nursing practice. Nursing faculty and administrators from a baccalaureate nursing program collaborated with nursing clinicians from seven acute care hospitals to meet the assessed needs of community nurses for reentry programs. The collaborative effort provided accessible courses at lower costs with qualified faculty and a variety of clinical practice experiences for nurses areawide. This article describes the planning, development, implementation, and analysis of this successful areawide RN refresher course.

  19. NCLEX-RN success: evidence-based strategies.

    Science.gov (United States)

    Thomas, Marie H; Baker, Susan Scott

    2011-01-01

    Evidence-based nursing requires that students think reflectively and use clinical inquiry to develop clinical reasoning and decision-making skills. Likewise, nursing students need a strategy to be successful in passing the NCLEX-RN. The authors identify strategies based on nursing research to facilitate student success. While learning the evidence-based nursing process, the student must begin to think like a nurse while answering clinical practice questions. Using the skills taught for evidence-based nursing can be a powerful tool to approach the NCLEX-RN and succeed.

  20. Flere krav til børn skaber ulighed

    DEFF Research Database (Denmark)

    Gulløv, Eva; Gilliam, Laura

    2012-01-01

    Forældre og institutioner træner børn til at blive gode sociale borgere, der er lette at omgås. Normen for det 'gode', hensyntagende barn strammes år for år, og dem, der falder udenfor, risikerer at blive tabt på gulvet.......Forældre og institutioner træner børn til at blive gode sociale borgere, der er lette at omgås. Normen for det 'gode', hensyntagende barn strammes år for år, og dem, der falder udenfor, risikerer at blive tabt på gulvet....

  1. O PROCESSO EDUCACIONAL INCLUSIVO NO CEFET-RN: UMA LEITURA CRÍTICA DO PROJETO POLÍTICO-PEDAGÓGICO

    Directory of Open Access Journals (Sweden)

    Fernando Fernandes Gomes

    2009-03-01

    políticas específicas que privilegien el ingreso de estudiantes de escuelas públicas; asimismo busca tornar efectiva la práctica de incluir personas con necesidades educativas especiales (PNEE. Finalmente, se espera que este artículo contribuya con el perfeccionamiento del proyecto educativo de centro del CEFET-RN, actualmente en construcción. PALABRAS CLAVE: CEFET-RN. Educación inclusiva. Inclusión social. Proyecto educativo de centro.

  2. rn Rüsen y la conciencia histórica

    OpenAIRE

    Carmen Lucía Cataño Balseiro

    2011-01-01

    La categoría “conciencia histórica”, como es desarrollada por el historiador y filósofo alemán Jörn Rüsen, es una teoría de creación de sentido histórico, en la que interviene la memoria histórica como componente principal de la conciencia histórica, movilizándose ambas en la conformación de la cultura histórica. Ésta se define por aquel conjunto de funciones a través de las cuales un individuo y/o una sociedad crea una relación activa con su pasado mediante una experiencia tem...

  3. Discovery of $^{229}$Rn and the structure of the heaviest Rn and Ra isotopes from Penning-trap mass measurements

    CERN Document Server

    Neidherr, D; Beck, D; Blaum, K; Böhm, Ch; Breitenfeldt, M; Cakirli, R B; Casten, R F; George, S; Herfurth, F; Herlert, A; Kellerbauer, A G; Kowalska, M; Lunney, D; Minaya-Ramirez, E; Naimi, S; Noah, E; Penescu, L; Rosenbusch, M; Schwarz, S; Schweikhard, L; Stora, T

    2009-01-01

    The masses of the neutron-rich radon isotopes $^{223–229}$Rn have been determined for the first time, using the ISOLTRAP setup at CERN ISOLDE. In addition, this experiment marks the first discovery of a new nuclide,$^{229}$Rn, by Penning-trap mass measurement. The new, high-accuracy data allow a fine examination of the mass surface, via the valence-nucleon interaction ${\\delta}$V$_{pn}$. The results reveal intriguing behavior, possibly reflecting either a N=134 subshell closure or an octupolar deformation in this region.

  4. Comprehensive software for the assessment of {sup 222}Rn and {sup 220}Rn decay products based on air sampling measurements

    Energy Technology Data Exchange (ETDEWEB)

    Sima, Octavian [Physics Department, University of Bucharest, Bucharest-Magurele, P.O. Box MG-11, RO-077125 (Romania)], E-mail: octavian.sima@ik.fzk.de

    2009-05-15

    A computational tool dedicated to the measurement of {sup 222}Rn and {sup 220}Rn decay products by air sampling is presented. {alpha}- or {gamma}-spectrometry measurements, gross {alpha} or {beta} counting, as well as a combination of them are considered. Special attention is given to the evaluation of the uncertainty budget of the results. Besides typical applications in the analysis of experimental data, the software can be used for assessing the expected quality of a measurement protocol and for optimizing it, by generating and analyzing sets of realistic synthetic data.

  5. Musikterapi med kontakt- og kommunikationssvage børn

    DEFF Research Database (Denmark)

    Frederiksen, Britta Vinkler

    2009-01-01

    I artiklen beskrives, hvordan musikterapi er med til at støtte en målrettet udviklingsproces hos børn, med diagnoser som Asperger syndrom, autisme, opmærksomhedsforstyrrelser, ADHD o.lign. Musikkens kvaliteter beskrives og illustreres gennem vignetter fra terapiforløb, der alle er foregået i Klinik...

  6. Funktionelle lidelser hos børn og unge

    DEFF Research Database (Denmark)

    Dehlholm-Lambertsen, Gitte; Hulgaard, Ditte Roth

    2017-01-01

    RESUME: Funktionelle somatiske symptomer hos børn og unge er en hyppig kontaktårsag i almen praksis. Forældrenes – og barnets – sygdomsforståelse har stor betydning for udvikling og vedligeholdelse af funktionelle lidelser. Gentagne undersøgelser i sundhedsvæsenet og familiens fokusering på fysis...

  7. Etched track technique to measure sup 2 sup 2 sup 2 Rn and sup 2 sup 2 sup 0 Rn fluxes on soil surface

    CERN Document Server

    Csige, I

    2003-01-01

    sup 2 sup 2 sup 2 Rn and sup 2 sup 2 sup 0 Rn in the human environment are considered to be a risk factor because of the radiation dose due to the inhalation of their short-lived daughters. Main source of radon is usually the soil; therefore the measurement of fluxes of sup 2 sup 2 sup 2 Rn and sup 2 sup 2 sup 0 Rn on soil surfaces is often a relevant parameter to characterise building site radon potential. An etched track detector technique was developed to measure long-time average sup 2 sup 2 sup 2 Rn and sup 2 sup 2 sup 0 Rn fluxes. (R.P.)

  8. Effects of RN Age and Experience on Transformational Leadership Practices.

    Science.gov (United States)

    Herman, Susan; Gish, Mary; Rosenblum, Ruth; Herman, Michael

    2017-06-01

    This study reported the evolution of transformational leadership (TL) practices and behaviors across years of age, management experience, and professional nursing practice within a professional nursing leadership organization. Recent studies of CNO TL found valuations peak near age 60 years. This study reported on a wider range of management positions, correlating years of RN practice and management experience and age to TL metrics. This study used Kouzes and Posner's Leadership Practices Inventory-Self-Assessment (LPI-S) to survey a nursing leadership organization, the Association of California Nurse Leaders (ACNL). Anonymous responses were analyzed to identify leadership trends in age and years of professional service. On average, LPI-S metrics of leadership skills advance through years of management, RN experience, and age. The TL scores are statistically higher in most LPI-S categories for those with more than 30 years of RN or management experience. Decade-averaged LPI-S TL metrics in the ACNL survey evolve linearly throughout age before peaking in the decade from age 60 to 69 years. A similar evolution of TL metrics is seen in decades of either years of management experience or years of RN experience. Transformational leadership increased with nursing maturity particularly for LPI-S categories of "inspire a shared vision," "challenge the process," and "enable others to act." In the ACNL population studied, decade-averaged leadership metrics advanced. Leadership evolution with age in the broader RN population peaked in age bracket 60 to 69 years. The LPI-S averages declined when older than 70 years, coinciding with a shift from full-time work toward retirement and part-time employment.

  9. A high-density linkage map of the RN region in pigs.

    Science.gov (United States)

    Looft, C; Milan, D; Jeon, J T; Paul, S; Reinsch, N; Rogel-Gaillard, C; Rey, V; Amarger, V; Robic, A; Kalm, E; Chardon, P; Andersson, L

    2000-01-01

    The porcine RN locus affects muscle glycogen content and meat quality. We previously mapped the RN locus to chromosome 15. This study describes the identification of polymorphisms for four class I and four class II markers located in the RN region. Resource families were genotyped with F-SSCP markers (fluorescent single strand conformation polymorphism) and microsatellite markers. Subsequent multipoint linkage analysis revealed the order FN1-IGFBP5-S1000-S1001-IL8RB-VIL1-RN-Sw936-Sw906. The gene order is identical to the previously reported porcine RH map of the same region. The described map will facilitate positional cloning of the RN gene.

  10. Avaliação da biodegradabilidade de petróleo utilizando microrganismos isolados do estuário do Rio Potengi (RN)

    OpenAIRE

    Costa, Cíntia de Castro

    2010-01-01

    A atividade petrolífera do RN constitui uma ameaça permanente aos ecossistemas costeiros, principalmente os manguezais, com a possibilidade de derramamentos de óleo. Neste contexto, o objetivo desse estudo foi avaliar o potencial de resistência do ambiente de manguezal a um possível derramamento. Foram selecionados e isolados microrganismos degradadores de petróleo pela técnica de enriquecimento de culturas e formação de um consórcio bacteriano. O estudo cinético do consórci...

  11. Derrame pericárdico grave. Ventana pericárdica percutánea con balón

    Directory of Open Access Journals (Sweden)

    Carlos A. Bruno

    2008-01-01

    Full Text Available La mayoría de los pacientes con derrame pericárdico crónico son mujeres y mayores de 50 años. En esta presentación se describe el caso de una paciente de 63 años con derrame pericárdico crónico grave, con antecedente de carcinoma de mama izquierda irradiado, diagnóstico presuntivo no confirmado de tuberculosis pulmonar e hipotiroidea sustituida. Ante la recurrencia del derrame luego de pericardiocentesis y el fracaso del tratamiento antiinflamatorio con AINE se decidió realizar una ventana pericárdica percutánea, sin que se presentaran complicaciones técnicas. Se inició tratamiento con colchicina y se evaluaron las posibles causas: tuberculosa, oncológica, secundaria a hipotiroidismo o por radiación. Por exclusión se llegó a la etiología radiante. Al mes de la realización de la ventana pericárdica no se observaba derrame pericárdico en el ecocardiograma.

  12. A primary standard for activity concentration of {sup 220}Rn (thoron) in air

    Energy Technology Data Exchange (ETDEWEB)

    Roettger, Annette, E-mail: Annette.roettger@ptb.d [Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig (Germany); Honig, Anja; Dersch, Rainer; Ott, Oliver; Arnold, Dirk [Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig (Germany)

    2010-07-15

    Due to the short half-life of Rn-220, a primary standard for activity concentration of Rn-220 (thoron) in air (i.e. a homogeneous reference atmosphere consisting of a certified activity in a certified volume) has been considered unachievable in the past. Traceability of Rn-222 reference atmospheres is achievable using radon gas activity standards (; ) and standard volumes, and is an established method. For the short-lived radionuclide Rn-220 this procedure is not feasible, since no Rn-220 gas activity standard with a reasonable activity can be produced. This leads to a lack of traceability for measurements of Rn-220 activity concentration: only atmospheres monitored by reference instruments (i.e. secondary standards) are available. The new primary standard for the activity concentration of {sup 220}Rn developed by PTB now closes this gap in radon metrology.

  13. Valoración del crecimiento y maduración de los casos de hipotiroidismo congénito detectados por el programa de cribado neonatal en Catalunya (1986-1997)

    OpenAIRE

    Gibert Agulló, Anna

    2007-01-01

    Consultable des del TDX A la portada: Área de Pediatría Títol obtingut de la portada digitalitzada El diagnóstico clínico del hipotiroidismo congénito (HC) al nacer es difícil. Las graves secuelas neurológicas, sensoriales y de desarrollo que se derivan del tratamiento tardío, asociado al hecho de su prevención si el tratamiento es precoz ha hecho que en muchos países se establezcan programas de detección precoz del HC. En Catalunya el programa de detección precoz del HC se inició en...

  14. Characterization of the rabbit neonatal Fc receptor (FcRn) and analyzing the immunophenotype of the transgenic rabbits that overexpresses FcRn.

    Science.gov (United States)

    Catunda Lemos, Ana Paula; Cervenak, Judit; Bender, Balázs; Hoffmann, Orsolya Ivett; Baranyi, Mária; Kerekes, Andrea; Farkas, Anita; Bosze, Zsuzsanna; Hiripi, László; Kacskovics, Imre

    2012-01-01

    The neonatal Fc receptor (FcRn) regulates IgG and albumin homeostasis, mediates maternal IgG transport, takes an active role in phagocytosis, and delivers antigen for presentation. We have previously shown that overexpression of FcRn in transgenic mice significantly improves the humoral immune response. Because rabbits are an important source of polyclonal and monoclonal antibodies, adaptation of our FcRn overexpression technology in this species would bring significant advantages. We cloned the full length cDNA of the rabbit FcRn alpha-chain and found that it is similar to its orthologous analyzed so far. The rabbit FcRn - IgG contact residues are highly conserved, and based on this we predicted pH dependent interaction, which we confirmed by analyzing the pH dependent binding of FcRn to rabbit IgG using yolk sac lysates of rabbit fetuses by Western blot. Using immunohistochemistry, we detected strong FcRn staining in the endodermal cells of the rabbit yolk sac membrane, while the placental trophoblast cells and amnion showed no FcRn staining. Then, using BAC transgenesis we generated transgenic rabbits carrying and overexpressing a 110 kb rabbit genomic fragment encoding the FcRn. These transgenic rabbits--having one extra copy of the FcRn when hemizygous and two extra copies when homozygous--showed improved IgG protection and an augmented humoral immune response when immunized with a variety of different antigens. Our results in these transgenic rabbits demonstrate an increased immune response, similar to what we described in mice, indicating that FcRn overexpression brings significant advantages for the production of polyclonal and monoclonal antibodies.

  15. Vold mod førskolebørn

    DEFF Research Database (Denmark)

    Oldrup, Helene; Lindstrøm, Maia; Korzen, Sara

    Denne rapport handler om praksis og barrierer for opsporing af og underretning om vold mod førskolebørn. Rapporten er baseret på 22 kvalitative interviews med fagfolk inden for dagpasning, sundhedsvæsen og det sociale system. Undersøgelsen viser bl.a., at en del af fagfolkene ofte tøver med...... kan være usikre på, hvad det overhovedet vil sige at lave en underretning. Dette er delrapport 3 af 3 i et større projekt om vold mod børn og unge i Danmark. Resultaterne fra de tre delrapporter sammenfattes i en afsluttende hovedrapport. Projektet er bestilt og finansieret af Socialministeriet....

  16. RN-BSN curricula: designed for transition, not repetition.

    Science.gov (United States)

    Allen, Patricia E; Armstrong, Myrna L

    2013-01-01

    Combined efforts of professional mandates, employer preferences for increased educational levels of staff registered nurses (RNs), Magnet's higher environmental ratings, the Institute of Medicine report, and Aiken's (2003, 2008, & 2011) clinical research outcomes have spawn renewed attention for RN-baccalaureate degree of science in nursing (BSN) education. Yet, nationally, only 21.6% of associate degree nurses are continuing their education (Health Resources and Services Administration, 2010). Designing programs with the student as the center, where student/faculty engagement is the goal, has enabled one school of nursing to develop a quality on-line RN-to-BSN program. Core values of the program reveal a faculty who is committed to development of education to transition the associate degree and/or diploma graduate to professional nursing practice without repetition of content and learning activities.

  17. Priit Pärn ohjab Turus festivali / Tiit Tuumalu

    Index Scriptorium Estoniae

    Tuumalu, Tiit, 1971-

    2001-01-01

    Turu Kunstiakadeemia animatsiooniosakonda juhatav Priit Pärn lükkas eile käima I Turu animafestivali Tough Eye, kus võistleb ka kolm eesti filmi. Toimub ka Eesti päev, kus näidatakse uute tööde kõrval ka Elbert Tuganovi jt. klassikaks saanud animafilme, kaasaarvatud säilinud lõik esimesest eesti joonisfilmist "Kutsu-Juku seiklused" (1931)

  18. Anbragte børn og unges trivsel 2016

    DEFF Research Database (Denmark)

    Lausten, Mette; Jørgensen, Trine

    17 år i foråret 2016. På det tidspunkt var godt 11.000 danske børn og unge anbragt uden for hjemmet, svarende 1 pct. af alle 0-17-årige. Denne undersøgelse er unik ved, at svarene kommer fra børnene og de unge selv. Det er derfor de anbragtes egne oplevelser, der belyses, uafhængigt af sagsbehandlere...

  19. Spilleregler i musikterapi med børn

    DEFF Research Database (Denmark)

    Holck, Ulla

    2005-01-01

    Artiklen gennemgår udvalgte eksempler på anvendelse af spilleregler i musikterapi med børneklientgrupper. Efter en kort introduktion af Priestleys syn på analytisk musikterapi med børn, præsenteres læseren således for en række caseeksempler fra faglitteraturen, der giver indblik i udformning og a...

  20. Priit Pärn ohjab Turus festivali / Tiit Tuumalu

    Index Scriptorium Estoniae

    Tuumalu, Tiit, 1971-

    2001-01-01

    Turu Kunstiakadeemia animatsiooniosakonda juhatav Priit Pärn lükkas eile käima I Turu animafestivali Tough Eye, kus võistleb ka kolm eesti filmi. Toimub ka Eesti päev, kus näidatakse uute tööde kõrval ka Elbert Tuganovi jt. klassikaks saanud animafilme, kaasaarvatud säilinud lõik esimesest eesti joonisfilmist "Kutsu-Juku seiklused" (1931)

  1. Læringsmodstand hos børn

    DEFF Research Database (Denmark)

    Broström, Stig

    2017-01-01

    I dette kapitel beskrives dimensioner ved børns læring og med særligt fokus på Illeris’ begreb læringsmodstand. Det tages udgangspunkt i den kulturhistoriske skoles læringsteori med reference til bl.a. Vygotsky og Leontjev. Børn i såvel dagtilbud som skolen vil løbende vise modstand mod læring...

  2. Genome Sequence of the Urethral Isolate Pseudomonas aeruginosa RN21

    OpenAIRE

    Wibberg, Daniel; Tielen, Petra; Narten, Maike; Schobert, Max; Blom, Jochen; Schatschneider, Sarah; Meyer, Ann-Kathrin; Neubauer, Rüdiger; Albersmeier, Andreas; Albaum, Stefan; Jahn, Martina; Goesmann, Alexander; Vorhölter, Frank-Jörg; Pühler, Alfred; Jahn, Dieter

    2015-01-01

    Pseudomonas aeruginosa is known to cause complicated urinary tract infections (UTI). The improved 7.0-Mb draft genome sequence of P. aeruginosa RN21, isolated from a patient with an acute UTI, was determined. It carries three (pro)phage genomes, genes for two restriction/modification systems, and a clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated (Cas) system.

  3. Veterinární klinika, Náchod

    OpenAIRE

    Levá, Nikola

    2016-01-01

    Diplomová práce se zabývá zpracováním projektové dokumentace veterinární kliniky v Náchodě. Projekt a přílohy jsou zpracovány dle současně platných zákonů, vyhlášek a norem. Veterinární klinika je situována na parcelách č.122/3 a 122/4, které spadají do katastrálního území obce Náchod. V blízkosti pozemku pod přilehlou místní komunikací, jsou vedeny inženýrské sítě. V objektu veterinární kliniky budou 2 ordinace, 2 operační sály, laboratoř, lékárna, obchod s chovatelskými potřebami a kancelář...

  4. Present status of {sup 222}Rn in groundwater in Extremadura

    Energy Technology Data Exchange (ETDEWEB)

    Galan Lopez, M. [Laboratorio de Metrologia de Radiaciones Ionizantes, CIEMAT, Avenida Complutense, 22, 28040 Madrid (Spain)], E-mail: monica.galan@ciemat.es; Martin Sanchez, A. [Departamento de Fisica, Universidad de Extremadura, 06071 Badajoz (Spain)

    2008-10-15

    Radon-222 was measured in groundwater sources of Extremadura (Spain), analyzing 350 samples from private and public springs, wells, and spas by liquid scintillation counting (LSC) and gamma spectrometry. The {sup 222}Rn activity concentrations ranged from 0.24 to 1168 Bq L{sup -1}. The statistical analysis showed a log-normal distribution with a mean of (111 {+-} 7) Bq L{sup -1} and a median of (36 {+-} 3) Bq L{sup -1}. A hydrogeological study revealed correlations between the activity concentration and the aquifer material's characteristics. A map of {sup 222}Rn in groundwater was elaborated and compared with the natural gamma radiation map for this region. About 35% of the samples showed {sup 222}Rn activity concentrations above the Euratom recommended limit of 100 Bq L{sup -1}. Three uranium series radionuclides ({sup 238}U, {sup 234}U, and {sup 226}Ra) were also assayed by alpha-particle spectrometry, estimating the annual effective dose due to the presence of these natural radionuclides in drinking water.

  5. Inhalation exposures due to radon and thoron ((222)Rn and (220)Rn): Do they differ in high and normal background radiation areas in India?

    Science.gov (United States)

    Mishra, Rosaline; Sapra, B K; Prajith, R; Rout, R P; Jalaluddin, S; Mayya, Y S

    2015-09-01

    In India, High Background Radiation Areas (HBRAs) due to enhanced levels of naturally occurring radionuclides in soil (thorium and, to a lesser extent, uranium), are located along some parts of the coastal tracts viz. the coastal belt of Kerala, Tamilnadu and Odisha. It is conjectured that these deposits will result in higher emissions of radon isotopes ((222)Rn and (220)Rn) and their daughter products as compared to Normal Background Radiation Areas (NBRAs). While the annual external dose rates contributed by gamma radiations in these areas are about 5-10 times higher, the extent of increase in the inhalation dose rates attributable to (222)Rn and (220)Rn and their decay products is not well quantified. Towards this, systematic indoor surveys were conducted wherein simultaneous measurements of time integrated (222)Rn and (220)Rn gas and their decay product concentrations was carried out in around 800 houses in the HBRAs of Kerala and Odisha to estimate the inhalation doses. All gas measurements were carried out using pin-hole cup dosimeters while the progeny measurements were with samplers and systems based on the Direct radon/thoron Progeny sensors (DRPS/DTPS). To corroborate these passive measurements of decay products concentrations, active sampling was also carried out in a few houses. The results of the surveys provide a strong evidence to conclude that the inhalation doses due to (222)Rn and (220)Rn gas and their decay products in these HBRAs are in the same range as observed in the NBRAs in India.

  6. Analytical FcRn affinity chromatography for functional characterization of monoclonal antibodies

    Science.gov (United States)

    Schlothauer, Tilman; Rueger, Petra; Stracke, Jan Olaf; Hertenberger, Hubert; Fingas, Felix; Kling, Lothar; Emrich, Thomas; Drabner, Georg; Seeber, Stefan; Auer, Johannes; Koch, Stefan; Papadimitriou, Apollon

    2013-01-01

    The neonatal Fc receptor (FcRn) is important for the metabolic fate of IgG antibodies in vivo. Analysis of the interaction between FcRn and IgG in vitro might provide insight into the structural and functional integrity of therapeutic IgG that may affect pharmacokinetics (PK) in vivo. We developed a standardized pH gradient FcRn affinity liquid chromatography method with conditions closely resembling the physiological mechanism of interaction between IgG and FcRn. This method allows the separation of molecular IgG isoforms, degradation products and engineered molecules based on their affinity to FcRn. Human FcRn was immobilized on the column and a linear pH gradient from pH 5.5 to 8.8 was applied. FcRn chromatography was used in comparison to surface plasmon resonance to characterize different monoclonal IgG preparations, e.g., oxidized or aggregated species. Wild-type and engineered IgGs were compared in vitro by FcRn chromatography and in vivo by PK studies in huFcRn transgenic mice. Analytical FcRn chromatography allows differentiation of IgG samples and variants by peak pattern and retention time profile. The method can distinguish: 1) IgGs with different Fabs, 2) oxidized from native IgG, 3) aggregates from monomer and 4) antibodies with mutations in the Fc part from wild-type IgGs. Changes in the FcRn chromatographic behavior of mutant IgGs relative to the wild-type IgG correlate to changes in the PK profile in the FcRn transgenic mice. These results demonstrate that FcRn affinity chromatography is a useful new method for the assessment of IgG integrity. PMID:23765230

  7. Analysis of ground-based 222Rn measurements over Spain: Filling the gap in southwestern Europe

    Science.gov (United States)

    Grossi, C.; Àgueda, A.; Vogel, F. R.; Vargas, A.; Zimnoch, M.; Wach, P.; Martín, J. E.; López-Coto, I.; Bolívar, J. P.; Morguí, J. A.; Rodó, X.

    2016-09-01

    Harmonized atmospheric 222Rn observations are required by the scientific community: these data have been lacking in southern Europe. We report on three recently established ground-based atmospheric 222Rn monitoring stations in Spain. We characterize the variability of atmospheric 222Rn concentrations at each of these stations in relation to source strengths, local, and regional atmospheric processes. For the study, measured atmospheric 222Rn concentrations, estimated 222Rn fluxes, and regional footprint analysis have been used. In addition, the atmospheric radon monitor operating at each station has been compared to a 222Rn progeny monitor. Annual means of 222Rn concentrations at Gredos (GIC3), Delta de l'Ebre (DEC3), and Huelva (UHU) stations were 17.3 ± 2.0 Bq m-3, 5.8 ± 0.8 Bq m-3, and 5.1 ± 0.7 Bq m-3, respectively. The GIC3 station showed high 222Rn concentration differences during the day and by seasons. The coastal station DEC3 presented background concentrations typical of the region, except when inland 222Rn-rich air masses are transported into the deltaic area. The highest 222Rn concentrations at UHU station were observed when local recirculation facilitates accumulation of 222Rn from nearby source represented by phosphogypsum piles. Results of the comparison performed between monitors revealed that the performance of the direct radon monitor is not affected by meteorological conditions, whereas the 222Rn progeny monitor seems to underestimate 222Rn concentrations under saturated atmospheric conditions. Initial findings indicate that the monitor responses seem to be in agreement for unsaturated atmospheric conditions but a further long-term comparison study will be needed to confirm this result.

  8. Pesquisa neonatal de hipotiroidismo congénito: supervisión del déficit de yodo en la provincia de Misiones Screening neonatal for congenital hypothyroidism: surveillance of iodine deficiency in Misiones

    Directory of Open Access Journals (Sweden)

    Virginia Méndez

    2007-04-01

    Full Text Available El déficit de yodo (IDD es un problema de la Salud Pública que afecta a millones de personas en todo el mundo y es causante de alteraciones en la neuromaduración que pueden ser evitados si se realiza una yodoprofilaxis adecuada. Objetivo: Realizar un monitoreo de IDD en la localidad de Wanda, provincia de Misiones, por su ubicación geográfica y hábitos alimentarios con posible consumo regional de sal no iodada. Se estudiaron en 502 escolares de 5 a 14 años de vida , se evaluaron: peso, talla , BMI y palpación tiroidea. En 114 de ellos se determinó la yoduria en muestras casuales de orina. Se analizaron los niveles de TSH de la pesquisa neonatal de los 18 meses previos al estudio, realizados por métodos sensibles (IFMA-DELFIA. Se aplicaron los criterios de suficiencia establecidos por la OMS/ ICCDD. Resultados: La prevalencia de bocio en la región fue de 6.2 %. Los niveles de yoduria tuvieron una mediana de 239 ug/l. El valor de TSH neonatal mediano fue 1.25 uU/ml. Sólo el 1.4 % de las muestras estaban por encima de 5 uU/ml . Cuando se aplicaron los criterios de la OMS pudo observarse que la prevalencia de bocio superaba levemente lo esperado para una zona suficiente, pero no así los niveles de ioduria ni la distribución de TSH neonatal. Conclusión: El aporte iodado de la región evaluada es suficiente como lo demuestran la ioduria y los niveles de TSH neonatal. La presencia de bociógenos como la mandioca en la dieta puede explicar el leve aumento en la prevalencia de bocio. La utilización de la pesquisa neonatal de hipotiroidismo congénito en la supervisión de la deficiencia de yodo añade un beneficio al objetivo primario que es la prevención del retraso mental.O b j e c t i v e : To estimate the adequacy of iodide intake in Wanda Misiones through the conventional parameters of ioduria and goiter prevalence in scholars as well as with the distribution of TSH neonatal levels as performed for the hypothyroidism screening

  9. Estimation of 222Rn release from the phosphogypsum board used in housing panels.

    Science.gov (United States)

    Jang, Mee; Kang, Chang-Sun; Hyun Moon, Joo

    2005-01-01

    Phosphogypsum board is a popular construction material used for housing panels in Korea. Phosphogypsum often contains (226)Ra which decays into (222)Rn through an alpha transformation. (222)Rn emanated from the (226)Ra-bearing phosphogypsum board has drawn the public concern due to its potential radiological impacts to indoor occupants. The emanation rate of (222)Rn from the board is estimated in this paper. A mathematical model of the emanation rate of (222)Rn from the board is presented and validated through a series of experiments. The back diffusion effect due to accumulation of (222)Rn-laden air was incorporated in the model and found to have a strong impact on the (222)Rn emanation characteristics.

  10. Teledialog med anbragte børn og unge i Herning Kommune

    DEFF Research Database (Denmark)

    Andersen, Lars Bo; Lauritsen, Peter

    2016-01-01

    Folderen er udarbejdet på baggrund af en række workshops afholdt i efteråret 2015, hvor socialrådgivere fra Center for Børn og Forebyggelse, Børn & Unge eksperimenterede med Teledialog i samarbejde med anbragte børn og unge. Konkret præsenteres et udvalg af rådgivernes egne erfaringer fra arbejde...

  11. Forskning i musikterapi - børn med en Autisme Spektrum Forstyrrelse

    DEFF Research Database (Denmark)

    Holck, Ulla

    2011-01-01

    Der er forskningsmæssig evidens for, at musikterapi med børn med en autisme spektrum forstyrrelse (ASF) har en signifikant effekt. Cochrane reviews påviser, at musikterapi fremmer verbal og navnlig nonverbal kommunikation hos børn med ASF. En RCT-undersøgelse viser endvidere en signifikant effekt...... diagnostisk udredning af barnets evne til socialt engagement og nonverbal kommunikation. Musikterapeutisk assessment er specielt velegnet til at skelne børn med en autismeforstyrrelse fra børn med en svær kommunikationsforstyrrelse....

  12. L2(Rn) Boundedness for a Class of Multilinear Singular Integral Operators

    Institute of Scientific and Technical Information of China (English)

    Guo En HU

    2003-01-01

    The L2(Rn) boundedness for the multilinear singular integral operators defined by Ω(x-y) TAf(x) =∫Ω(x-y)/Rn[ |x-y|n+1 ](A(x) - A(y) - A(y)(x - y))f(y)dy is considered, where Ω is homogeneous of degree zero, integrable on the unit sphere and has vanishing moment of order one, A has derivatives of order one in BMO(Rn). A sufficient condition based on the Fourier transform estimate and implying the L2(Rn) boundedness for the multilinear operator TA is given.

  13. Forskning i musikterapi - børn med en Autisme Spektrum Forstyrrelse

    DEFF Research Database (Denmark)

    Holck, Ulla

    2011-01-01

    Der er forskningsmæssig evidens for, at musikterapi med børn med en autisme spektrum forstyrrelse (ASF) har en signifikant effekt. Cochrane reviews påviser, at musikterapi fremmer verbal og navnlig nonverbal kommunikation hos børn med ASF. En RCT-undersøgelse viser endvidere en signifikant effekt...... diagnostisk udredning af barnets evne til socialt engagement og nonverbal kommunikation. Musikterapeutisk assessment er specielt velegnet til at skelne børn med en autismeforstyrrelse fra børn med en svær kommunikationsforstyrrelse....

  14. Perfect simulation and moment properties for the Matérn type III process

    DEFF Research Database (Denmark)

    Møller, Jesper; Huber, Mark L.; Wolpert, Robert L.

    2010-01-01

    In a seminal work, Bertil Matérn introduced several types of processes for modeling repulsive point processes. In this paper an algorithm is presented for the perfect simulation of the Matérn III process within a bounded window in , fully accounting for edge effects. A simple upper bound on the m......In a seminal work, Bertil Matérn introduced several types of processes for modeling repulsive point processes. In this paper an algorithm is presented for the perfect simulation of the Matérn III process within a bounded window in , fully accounting for edge effects. A simple upper bound...

  15. Kunst for begyndere - billedbøger for børn!

    DEFF Research Database (Denmark)

    Hansen, Andre Wang

    2005-01-01

    Analyse og diskussion af kunstformidling for børn, med udgagngspunkt i billedbogen Hvorfor? - en kunstbog for børn og barnlige sjæle, udgivet af kunstmuseet ARoS, der sammenlignes med Anthony Browne´s billedbog Tegnelegen fra kunstmuseet Tate Britain.......Analyse og diskussion af kunstformidling for børn, med udgagngspunkt i billedbogen Hvorfor? - en kunstbog for børn og barnlige sjæle, udgivet af kunstmuseet ARoS, der sammenlignes med Anthony Browne´s billedbog Tegnelegen fra kunstmuseet Tate Britain....

  16. A field experiment on Rn flux from reclaimed uranium mill tailings.

    Science.gov (United States)

    Hinton, T G; Whicker, F W

    1985-04-01

    Design and construction techniques are described for a 1.6 ha experimental reclamation plot consisting of a 1-m-thick slab of uranium mill tailings covered with various depths of overburden. A passive, activated charcoal device was developed and used for measurements of Rn flux at the soil surface. Observations on Rn flux vs overburden depth indicated that tailings covered with 1.5 m of revegetated or 0.3 m of bare overburden had Rn exhalation rates comparable to background. Vegetated subplots exhibited a significantly higher (often an order of magnitude) flux than the bare subplots. A positive correlation was observed between precipitation quantities and Rn flux.

  17. TGEV infection up-regulates FcRn expression via activation of NF-?B signaling

    OpenAIRE

    Jinyue Guo; Fei Li; Shaoju Qian; Dingren Bi; Qigai He; Hui Jin; Rui Luo; Shaowen Li; Xianrong Meng; Zili Li

    2016-01-01

    It has been well characterized that the neonatal Fc receptor (FcRn) transports maternal IgG to a fetus or newborn and protects IgG from degradation. We previously reported that FcRn is expressed in a model of normal porcine intestinal epithelial cells (IPEC-J2). Transmissible gastroenteritis is an acute enteric disease of swine that is caused by transmissible gastroenteritis virus (TGEV). How porcine FcRn (pFcRn) expression is regulated by pathogenic infection remains unknown. Our research sh...

  18. Continuous on-line calibration of diffusive soil-atmosphere trace gas transport using vertical {sup 220}Rn- and {sup 222}Rn-activity profiles

    Energy Technology Data Exchange (ETDEWEB)

    Lehmann, B.E. [Bern Univ. (Switzerland). Physics Inst.; Neftel, A. [Inst. of Environmental Protection and Agriculture, Bern (Switzerland); Tarakanov, S.V. [Inst. of Silicate Chemistry, St. Petersburg (Russian Federation)

    2001-07-01

    Continuous monitoring of {sup 220}Rn- and {sup 222}Rn-activities above and below the soil surface combined with sporadic direct {sup 222}Rn-flux measurements is used to quantify diffusive trace gas transport in the air-filled pore space of soil, through the soil-atmosphere interface and in the lowest layers of the atmosphere. In a calm night, {sup 222}Rn-activities above the surface first build-up near the ground (z < 10 cm) and subsequently with a delay of 2-3 hours at higher altitudes (z < 5 m). Knowing (1) the {sup 222}Rn-flux from activity profiles measured in soil gas, (2) from direct flux determinations and (3) using information about atmospheric diffusion parameters from {sup 220}Rn-activities measured near the surface it is possible to model the temporal evolution of the vertical {sup 222}Rn-profiles in a night with stable weather and constant soil conditions. The system operates automatically for extended periods of time in the field enabling a better understanding of transport processes in response to changing environmental conditions (wind, rain, soil humidity). (orig.)

  19. An RN first assistant's guide to private practice.

    Science.gov (United States)

    Hughes, Sheila

    2003-04-01

    In 1984, AORN developed its first official statement on RN first assistant (RNFA) practice. This article is a guide for RNFAs seeking self-employment. The dynamics of change, with reference to the role of the RNFA, in perioperative nursing and entrepreneurship will be discussed. Nurses' responsibilities in this expanded role, methods of becoming a change agent, and methods of obtaining privileges to practice as a self-employed RNFA (ie, functioning under the supervision of a surgeon) in health care organizations will be identified. Current trends and issues influencing RNFA practice, including certification, reimbursement, practice setting, education, competition, and changes in health care, also will be discussed.

  20. Generalization of Weierstrassian elliptic functions to R$^{n}$

    CERN Document Server

    Saçlioglu, C

    1995-01-01

    The Weierstrassian \\wp, \\zeta and \\sigma functions are generalized to {\\bf R}^{n}. The n=3 and n=4 cases have already been used in gravitational and Yang-Mills instanton solutions which may be interpreted as explicit realizations of spacetime foam and the monopole condensate, respectively. The new functions satisfy higher dimensional versions of the periodicity properties and Legendre's relations obeyed by their familiar complex counterparts. For n=4, the construction reproduces functions found earlier by Fueter using quaternionic methods. Integrating over lattice points along all directions but two, one recovers the original Weierstrassian elliptic functions.

  1. Magtanvendelse overfor anbragte børn og unge

    DEFF Research Database (Denmark)

    Hartoft, Hanne

    Magtanvendelse over for anbragte børn og unge er en samlebetegnelse for en række forskellige kontrollerende og adfærdsregulerende indgreb. Lovgivningen overlader en række beføjelser, f.eks. til føren og fastholdelse, person- og rumundersøgelse, kommunikationskontrol og begrænsninger i bevægelsesf...... bevægelsesfriheden til visse anbringelsessteder. I dagligdagen opstår der dog mange situationer, der ikke er omfattet af reguleringen, og hvor der kan være tvivl om, hvorledes hensynet til barnets selvbestemmelse skal afvejes overfor omsorgspligten....

  2. RESEARCH rN SOUTH AFRTCA - QUO VADIS?

    African Journals Online (AJOL)

    gold fields, this country would still have had a subsistence economy. So we have ... breakthrough the whole institution benefits. ..... 2 % to our foreign exchange although at present it con- ... Wlwt ore the pros and cons on research for and in.

  3. Vitamin C improves the apparent absorption of levothyroxine in a subset of patients receiving this hormone for primary hypothyroidism La vitamina C mejora la absorción aparente de levotiroxina en ciertos pacientes que reciben esta hormona por hipotiroidismo primario

    Directory of Open Access Journals (Sweden)

    PB Antúnez

    2011-03-01

    Full Text Available As in some patients with hypothyroidism, because of unknown reasons, large doses of levothyroxine are required to achieve a therapeutic endpoint, and preliminary observations have indicated that an hypoacidic gastric environment is associated with a reduction in levothyroxine bioavailability, and that co-administration of vitamin C might enhance absorption of certain drugs, we assessed whether this effect would be obtained taking levothyroxine with vitamin C. Design: We studied 28 patients (24 women and 4 men, age range 26-76 years; mean 48.0 ±17.75 treated with levothyroxine at doses of >1.70 µg/kg but failing to achieve their target TSH level. During the control period, each patient had at least two determinations of TSH indicating inadequate dosage. Interfering factors that could alter levothyroxine absorption such as celiac disease, calcium, iron, or antacid use, among others, and non-compliance were excluded. During the study period, the patients continued on the same dose of levothyroxine but took the tablet with 1 g of vitamin C in 200 cc of tap water, instead of the same volume of water alone. Serum TSH levels were prospectively measured 6-8 weeks after starting co-administration with vitamin C, and two months later. Main outcome: After six-eight weeks of taking levothyroxine with vitamin C, serum TSH decreased in all 28 patients (average reduction 69.79 ±22.19 %, and the target or desired level of TSH was achieved in 19/28 patients. The difference between TSH levels before and after treatment with vitamin C was significant: Basal TSH (IFMA was 9.01 ±5.51 mIU/L vs. a mean TSH on vitamin C treatment of 2.27 ±1.61mIU/L (pComo algunos pacientes con hipotiroidismo requieren altas dosis de levotiroxina para lograr el objetivo terapéutico, y existen observaciones de que el medio gástrico hipoacídico se asocia a reducción en la biodisponibilidad de la levotiroxina, y que la coadministración de vitamina C puede mejorar la absorción de

  4. Effect of combined treatment with calcitonin on bone densitometry of patients with treated hypothyroidism Influência da terapêutica associada com calcitonina sobre a densitometria óssea de pacientes com hipotiroidismo tratado

    Directory of Open Access Journals (Sweden)

    F. J. da C. Stamato

    2000-06-01

    Full Text Available INTRODUCTION: Thyroid hormones (TH may affect bone metabolism and turnover, inducing a loss of bone mass among hyperthyroid and in hypothyroid patients under hormone replacement treatment. Thyroid dysfunction leads to changes in the dynamics of parathyroid hormone (PTH and calcitonin (CT secretion. OBJECTIVE: The objective of the study was to determine the usefulness of CT as adjuvant therapy in the prevention of bone loss during the treatment of hypothyroidism. MATERIAL AND METHODS: We studied 16 female patients with recently diagnosed primary hypothyroidism, divided into two groups: group G1 (n=8 submitted to treatment with thyroxine (L-T4, and Group 2 (n=8 that, in addition to being treated with L-T4, received a nasal CT spray. All patients were submitted to determination of TSH, free T4, bone mineral densitometry (BMD and total bone calcium (TBC at the time of diagnosis, after 6 to 9 months of treatment, and after 12 months of treatment. RESULTS: No statistical significant differences were detected in either group between the total BMD values obtained for the femur and lumbar spine before and after treatment. However, group G1 presented a statistical significant TBC loss after 12 months of treatment compared to initial values. In contrast, no TBC loss was observed in the group treated with LT-4 in combination with CT, a fact that may suggest that CT was responsible for the lower bone reabsorption during treatment of hypothyroidism.INTRODUÇÃO: Os hormônios tiroidianos (HT podem influenciar o metabolismo e o "turnover" ósseo, induzindo perda de massa óssea em hipertiróideos e em hipótiroideos na vigência de reposição hormonal. As disfunções tiroidianas levam a alterações na dinâmica de secreção de paratormônio (PTH e de calcitonina (CT. OBJETIVO: Esclarecer a utilidade da CT como terapêutica coadjuvante na prevenção de perda óssea durante o tratamento do hipotiroidismo. MATERIAL E MÉTODOS: Dezeseis pacientes do sexo

  5. Forbedret diagnostik af osteomyelitis hos børn?

    DEFF Research Database (Denmark)

    Afzelius, Pia; Alstrup, Aage Kristian Olsen; Schønheyder, Henrik Carl;

    Osteomyelitis er en alvorlig sygdom. Tidlig diagnose og påbegyndelse af behandlingen er vigtigt for at forhindre sygdomsudviklingen og for at reducere potentielt alvorlige komplikationer. Konventionel røntgenundersøgelse udført tidligt i forløbet kan ikke udelukke akut osteomyelitis. MRI......, knogleskintigrafi og CT er centrale billeddiagnostiske metoder til diagnostik af akut osteomyelitis hos børn. MRI betragtes ofte som værende den bedste billeddannende metode, men er ikke altid tilgængelig og kræver anæstesi af små børn. Knogleskintigrafi påviser osteoblastaktivitet og anses for at være yderst...... sensitiv men er ikke særlig specifik. 18F-fluordeoxyglucose (FDG) PET har måske den højeste diagnostiske nøjagtighed for bekræftelse/udelukkelse af kronisk osteomyelitis sammenlignet med knogleskintigrafi, MRI og leukocytskintigrafi. Imidlertid har de fleste studier kun anvendt 18F-FDG PET ved mistanke om...

  6. Development and evaluation of an RN/RPN utilization toolkit.

    Science.gov (United States)

    Blastorah, Margaret; Alvarado, Kim; Duhn, Lenora; Flint, Frances; McGrath, Petrina; Vandevelde-Coke, Susan

    2010-05-01

    To develop and evaluate a toolkit for Registered Nurse/Registered Practical Nurse (RN/RPN) staff mix decision-making based on the College of Nurses of Ontario's practice standard for utilization of RNs and RPNs. Descriptive exploratory. The toolkit was tested in a sample of 2,069 inpatients on 36 medical/surgical units in five academic and two community acute care hospitals in southern Ontario. Survey and focus group data were used to evaluate the toolkit's psychometric properties, feasibility of use and utility. Results support the validity and reliability of the Patient Care Needs Assessment (PCNA) tool and the consensus-based process for conducting patient care reviews. Review participants valued the consensus approach. There was limited evidence for the validity and utility of the Unit Environmental Profile (UEP) tool. Nursing unit leaders reported confidence in planning unit staff mix ratios based on information generated through application of the toolkit, specifically the PCNA, although they were less clear about how to incorporate environmental data into staff mix decisions. Results confirm that the toolkit consistently measured the constructs that it was intended to measure and was useful in informing RN/RPN staff mix decision-making. Further refinement and testing of the UEP is required. Future research is needed to evaluate the quality of decisions resulting from the application of the toolkit, illuminate processes for integrating data into decisions and adapt the toolkit for application in other sectors.

  7. Re-evaluating the NCLEX-RN passing standard.

    Science.gov (United States)

    O'Neill, Thomas R; Marks, Casey M; Reynolds, Michelle

    2005-01-01

    Setting passing standards is a critical component of the NCLEX examination process. This research was conducted to provide sufficient information to the National Council of State Boards of Nursing's (NCSBN) Board of Directors to,make a decision regarding the passing standard of the NCLEX-RN. This article illustrates the standard setting process that NCSBN uses. Surveys of educators and employers, a modified Angoff procedure, the Beuk compromise, and global assessments by content experts were methods used. The Rasch model and a presumed ability distribution were used as the framework to integrate these diverse perspectives regarding minimal competence. The revised passing standard was -0.28 logits. For many of the minimal competence estimates, the author did not have authorization to release the information. In those instances, estimates and results were fabricated to be similar to the actual results, yet different enough as to not disclose confidential information. The fabricated results are clearly marked. In conclusion, a variety of approaches, sources, and perspectives are necessary for the establishment of fair and appropriate standards on the NCLEX-RN.

  8. MAPEAMENTO GEOMORFOLÓGICO DA BACIA DO APODIMOSSORÓ - RN - NE DO BRASIL

    Directory of Open Access Journals (Sweden)

    Alexsandra Bezerra da Rocha

    2009-01-01

    Full Text Available Cuenca Apodi-Mossoró corresponde al 27% de los RN. El objetivo de este trabajo es definir, mapear, caracterizar la geología, geomorfológicas y el paisaje se encuentra en la búsqueda de acuerdo a algunos investigadores Ab¿ Saber (1953, 1969, 1974, 2003, Petri e Fúlfaro (1983, Bigarella y Andrade (1964 entre otros. La metodología se basó en el análisis del paisaje. El estudio también se utiliza en topográficos, estudios de literatura, viajes de campo, análisis de imágenes de satélites LANDSAT e CBERS 2 y deducciones a partir de los datos obtenidos del GPS, Datum SAD 69 y proyección UTM, para la confección de los mapas temáticos utilizados lo Spring 4.2. Basado en estudios en la cuenca se constató las principales unidades morfoestructurales e unidades morfoesculturais. De esta división de información en una tabla de unidades de paisajes, resumen de su frágil medio ambiente, actividades potenciales y económico, con propuestas para la conservación y recuperación.

  9. Predictors of NCLEX-RN Success of Associate Degree Graduates: A Correlational Study

    Science.gov (United States)

    Kehm, Bonny J.

    2013-01-01

    The outcome of Associate Degree Nursing (ADN) students not passing the initial National Council of Licensure Examination for Registered Nursing (NCLEX-RN) can adversely affect schools of nursing. This failure also adversely affects the national nursing shortage. The declining national pass rates on the NCLEX-RN for ADN graduates and the increasing…

  10. Predictors of Success and Failure for ADN Students on the NCLEX-RN

    Science.gov (United States)

    Benefiel, Diane

    2011-01-01

    The purpose of this study was to: 1) analyze the relationship of preprogram and nursing program variables on National Council Licensure Examination for Registered Nurses (NCLEX-RN) success and failure, and 2) develop a model to predict success and failure on the NCLEX-RN. The convenience sample was comprised of 245 spring, summer, and fall midterm…

  11. Postmortem Changes in Pork Muscle Protein Phosphorylation in Relation to the RN Genotype

    DEFF Research Database (Denmark)

    Lametsch, René; Larsen, Martin Røssel; Essén-Gustavsson, Birgitta

    2011-01-01

    Postmortem changes in pork muscle protein phosphorylation in relation to the RN(-) genotype were investigated using one-dimensional gel electrophoresis and a phosphor specific staining. The phosphorylation levels of several protein bands were found to be affected by the RN(-) genotype and to chan...

  12. The Effect of a Computerized Review on NCLEX-RN Scores

    Science.gov (United States)

    Worrell, Pamela J.; Hodson, Kay E.; Henriksen, Larry

    1985-01-01

    This presentation will describe a pilot study being conducted at Ball State University. The study is attempting to determine the effect of a computerized review experience on the clinical subscale scores of NCLEX-RN. Relationships between the computerized review clinical subscores and the NCLEX-RN clinical subscale scores are also being investigated.

  13. Predictors of Success and Failure for ADN Students on the NCLEX-RN

    Science.gov (United States)

    Benefiel, Diane

    2011-01-01

    The purpose of this study was to: 1) analyze the relationship of preprogram and nursing program variables on National Council Licensure Examination for Registered Nurses (NCLEX-RN) success and failure, and 2) develop a model to predict success and failure on the NCLEX-RN. The convenience sample was comprised of 245 spring, summer, and fall midterm…

  14. EXISTENCE OF SOLUTIONS FOR QUASILINEAR ELLIPTIC EQUATIONS WITH UNBOUNDED COEFFICIENTS ON RN

    Institute of Scientific and Technical Information of China (English)

    Wei Gongming

    2008-01-01

    In this paper a class of p-Laplace type elliptic equations with unbounded coefficients on RN is considered.It is proved that there exist radial solutions on RN.On sufiiciently large ball,radial and nonradial solutions axe obtained.Finally,some necessary conditions for the existence of solutions axe given.

  15. Eksklusion og inklusion af minoritetsdanske børn i dagtilbud

    DEFF Research Database (Denmark)

    Tireli, Üzeyir

    2014-01-01

    Med udgangspunkt i minoritetsdanske børn som case, beskæftiger artiklen sig med inklusions- og eksklusionsprocesserne i dagtilbud. Den diskursive konstruktion af "os" og "dem" synes at være en af hovedårsagerne til eksklusion af disse børn. Forfatteren kommer med bud på og ideer til hvordan disse...

  16. Intervention rettet mod sproget hos børn med autisme

    DEFF Research Database (Denmark)

    Brynskov, Cecilia

    2014-01-01

    Sprogniveauet hos børn med autisme er afgørende for deres muligheder for udfoldelse og udvikling, og sproget er et udviklingsområde, der er meget modtageligt for intensiv intervention. Imidlertid modtager danske børn med autisme kun sjældent intensiv intervention rettet mod sproget. De intensive...

  17. rn, unge og sociale netværkssider. Hvad ved vi?

    DEFF Research Database (Denmark)

    Larsen, Malene Charlotte

    2012-01-01

    Hvorfor bruger børn og unge sociale netværkssider? Hvordan ser et venskab ud på internettet? Hvad betyder brugen af nye sociale medier for børn og unges identitet? Og hvordan forholder de sig til de risici, som uomtvisteligt også er en del af den sociale mediekultur? Dette kapitel indeholder en...

  18. A high-density linkage map of the RN region in pigs

    Directory of Open Access Journals (Sweden)

    Chardon Patrick

    2000-05-01

    Full Text Available Abstract The porcine RN locus affects muscle glycogen content and meat quality. We previously mapped the RN locus to chromosome 15. This study describes the identification of polymorphisms for four class I and four class II markers located in the RN region. Resource families were genotyped with F-SSCP markers (fluorescent single strand conformation polymorphism and microsatellite markers. Subsequent multipoint linkage analysis revealed the order FN1-IGFBP5-S1000-S1001-IL8RB-VIL1-RN-Sw936-Sw906. The gene order is identical to the previously reported porcine RH map of the same region. The described map will facilitate positional cloning of the RN gene.

  19. Extraction and purification of {sup 227}Ac and development of solid {sup 219}Rn source

    Energy Technology Data Exchange (ETDEWEB)

    Tang, Quan; Qiu, Shoukang; Xiao, Detao; Zhou, Yaohui; An, Xiaogang [University of South China, Hengyang (China). Radon Key Laboratory of Hunan Province/School of Nuclear Science and Technology

    2014-04-01

    The method of {sup 227}Ac extraction and purification from high-grade uranium ore and the test results of solid {sup 219}Rn source made from {sup 227}Ac are reported in this paper. With five years of follow-up monitoring, radiochemical purity of {sup 227}Ac and the emanation power of solid {sup 219}Rn source has been checked by emanation method and γ-spectrometry, the results showed that {sup 228}Th, {sup 231}Pa and {sup 226}Ra have been effectively removed and the emanation power of {sup 219}Rn source is about 80%. The long-term test results also showed that the {sup 219}Rn emanation rate remains stable in a wide air humidity range (40% ∝ 90%). Though the {sup 219}Rn source has not been accurately calibrated yet, it has been applied in the research for delay coincidence measurement of {sup 223}Ra. (orig.)

  20. Assisting at-risk students in preparing for NCLEX-RN.

    Science.gov (United States)

    Siktberg, L L; Dillard, N L

    2001-01-01

    The graduate who fails the National Council Licensure Examination for Registered Nurses (NCLEX-RN) on the first attempt is psychologically, socially, and financially devastated. It is humiliating for the graduate to inform family, friends, and potential employers of the failure. It is also devastating for the graduate to have to wait until the 91st day following the NCLEX-RN failure to retake the computer adapted test (CAT). This length of time between examinations may increase the graduate's risk for failing the NCLEX-RN a subsequent time, because the graduate is not authorized to function as a graduate nurse in the clinical setting; there is no ongoing reinforcement of nursing knowledge, nursing process, critical thinking, or clinical performance skills. The graduate's NCLEX-RN performance also impacts the school of nursing's annual NCLEX-RN pass rate.

  1. Commercial Application of RN-10 Catalyst in Coker Gasoline Hydrotreating Unit

    Institute of Scientific and Technical Information of China (English)

    Wang Futao

    2000-01-01

    Since April 1998 the coker gasoline hydrotreating unit at Daqing refinery has been using the do mestic advanced hydrotreating catalyst RN-10. In the past 1.5 years the RN-10 catalyst has given remark able high-quality naphtha as did the two batches of RN-1 catalyst during the eight-year period. With the same feedstock and at the same process regime, the RN-10 catalyst has shown its specifics featuring a lower initial reaction temperature, a lower rate of temperature rise, a lower mean reaction temperature, and higher operating flexibility. When processing shoddy gasoline or diesel fuel to produce the same product at identical process operating conditions, the capacity of unit using the RN-10 catalyst can be greatly increased.

  2. Observation of {sup 222}Rn progeny-and {sup 220}Rn progeny-loaded aerosols by atomic force microscopy

    Energy Technology Data Exchange (ETDEWEB)

    Leung, J.K.C.; Tso, M.Y.W.; Lam, J.H.C. [The Univ., of Hong Kong, Hong Kong (China); Zhau, Q.F. [Ministry of Health, Beijing (China)

    2002-07-01

    Atomic force microscopy is becoming a powerful tool for the study of nuclear tracks in materials such as CR-39. Coupled with its capability of observing near nm aerosol particles, we have utilized the AFM to observe the radon progeny-loaded aerosol particles deposited on surfaces of CR-39 and to observe the corresponding etch pits produced by the {alpha} -particles emitted from the radon progenies. A special platform was built so that after the aerosol particles on the CR-39 have been scanned and recorded, the CR-39 can be etched and then scanned for the etch pits at the same location. Both {sup 222}Rn and {sup 220}Rn progenies were used in the study. The progenies were generated by the appropriate radon sources and mixed with aerosol particles generated by aerosol generators. The aerosol size distributions were analyzed by a scanning mobility particle sizer. Some of the limitations and difficulties of the technique will be described. The results enable us to examine the attachment process including multiple attachments of radon progenies on aerosols.

  3. Dynamics, deterministic nature and correlations of outdoor {sup 222}Rn and {sup 220}Rn progeny concentrations measured at Bacau, Romania

    Energy Technology Data Exchange (ETDEWEB)

    Cuculeanu, Vasile, E-mail: cuculeanu@gmail.com [Faculty of Physics, University of Bucharest, Magurele, RO-077125 Bucharest (Romania); Simion, Florin [Faculty of Physics, University of Bucharest, Magurele, RO-077125 Bucharest (Romania); National Environmental Protection Agency, Radioactivity Laboratory, Splaiul Independentei 294, RO-060031 Bucharest (Romania); Simion, Elena [National Environmental Protection Agency, Radioactivity Laboratory, Splaiul Independentei 294, RO-060031 Bucharest (Romania); Geicu, Anton [National Administration of Meteorology, Bucharest (Romania)

    2011-07-15

    The long-term variation, nature and correlations of outdoor {sup 222}Rn and {sup 220}Rn progeny concentrations measured during the period 1994-2009 were investigated. The time series of data were obtained within the framework of the monitoring program performed by the Environmental Radioactivity Monitoring Station (ERMS) Bacau, a component part of the National Environmental Radioactivity Survey Network (NERSN), coordinated by National Environmental Protection Agency (NEPA). The measuring method is based on the total beta measurements of atmospheric aerosol filters, using a low background total beta counter and ({sup 90}Sr/Y) reference standard. Analysis of the time series of progeny concentrations in the low atmosphere makes evident different patterns of variation of these concentrations: diurnal, seasonal and annual. A possible relationship of progeny concentration increase with global warming is emphasized. In order to find the dominant frequency of the physical processes determining progeny concentration variability the power spectrum has been used. The deterministic nature of the time series of concentrations has been studied making use of the autocorrelation function and stationarity of the original data and of their phase randomized time series. Also, the correlations with meteorological parameters have been investigated using Pearson's correlation coefficient with corresponding level of significance. - Highlights: > Radon and thoron progeny concentrations measured on a period of 16 years. > 5 h, daily, monthly and annual patterns are pointed out. > Autocorrelation functions prove non-randomness of concentrations. > Deterministic nature of time series of concentrations is demonstrated. > Correlations with meteorological data are studied.

  4. Estúdio prospectivo de la enfermedad de chagas en recien nacidos con infección placent aria por Trypanosoma cruzi (Santa Cruz-Bolivia

    Directory of Open Access Journals (Sweden)

    Esperanza Azogue

    1991-06-01

    Full Text Available Para conocer la significación de la infección placentaria por T. cruzi, 820 recien nacidos (RN con peso ≤ 2500 grs fueron examinados por los métodos del Strouty cortes histopatológicos de placenta. 35 RN presentaron infección placentaria por T. cruzi, pero con el examen parasitológico directo en sangre del cordon umbilical negativo. A estos RN se les hizó el seguimiento parasitologico (microhematocrito y xenodiagnóstico para detectar una eventual positivación enel post-parto. El seguimiento fué a los 7, 15, 30 y 60 dias después del nacimiento y con xenodiagnóstico a los 15 dias. En 27 RN se pudo completar el seguimiento observandose una positivación parasitaria a T. cruzi en todos los casos. En el grupo control constituído por RN negativos a ambos métodos, no hubo ninguna positivación durante el seguimiento. Estas observaciones nos permiten proponer, que un recien nacido con infección placentaria por T. cruzi es un caso congênito y establecer un esquema práctico de diagnóstico precoz de la enfermedad de Chagas congénito.

  5. Una generalización de la métrica de Hausdorff sobre C(Rn

    Directory of Open Access Journals (Sweden)

    Y. Chalco-Cano

    2009-01-01

    Full Text Available En este trabajo hacemos una extensión de la métrica de Hausdorff H sobre C(Rn , el espacio de todos los conjuntos difusos cerrados en Rn , obteniendo una familia de métricas Df . Estudiamos algunas propiedades topológicas del espacio métrico (C(Rn , Df .

  6. Evaluating Creative Thinking of Rn-Bsn Students in the Course of Clinical Case Study and Practicum

    Science.gov (United States)

    Ku, Ya-Lie

    2015-01-01

    This case study evaluated creative thinking of RN-BSN students in the course of clinical case study and practicum. Study design used quantitative and qualitative evaluations of creative thinking of RN-BSN students by triangulation method in the course of clinical case study and practicum. Sixty RN-BSN students self-perceived the changing levels of…

  7. Noise Evaluation in the Commercial Center of Santa Cruz / RN

    Directory of Open Access Journals (Sweden)

    Dimitri Taurino Guedes

    2010-06-01

    Full Text Available The modern cities are characterized, mostly, by excessive concentration of trade and services in central areas, a fact that contributes to many problems, including noise pollution, which resulting in inconvenience and health problems to the population. This study aimed to analyze the level noise in the center of the city of Santa Cruz / RN. Were analyzed 15 spots on the main streets of the city during morning and Verpertine for two weeks, with the analyzer the Multi-Role Model THDL - 400, with INTERVAL of 40 minutes between measurements. It was observed that most points had noise levels above 70 decibels during the period. Therefore, above 65dB, the proposed legislation, requiring increased supervisory processes and environmental education.

  8. Removal of {sup 222}Rn daughters from metal surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Zuzel, G.; Wojcik, M. [Jagiellonian University Institute of Physics, Lojasiewicza 11, 30-348 Kraków (Poland); Majorovits, B. [Max Planck Institute for Physics, Föhringer Ring 6, 80805 München (Germany); Lampert, M. O.; Wendling, P. [Canberra-France, 1 Chemin de la Roseraie, B.P. 311, 67834 Tanneries Cedex (France)

    2015-08-17

    Removal of the long-lived {sup 222}Rn daughters ({sup 210}Pb, {sup 210}Bi and {sup 210}Po) from copper, stainless steel and germanium surfaces was investigated. As cleaning techniques etching and electro-polishing was applied to samples in a form of discs exposed earlier to a strong radon source. Reduction of the {sup 210}Pb activity was tested using a HPGe spectrometer, for {sup 210}Bi a beta spectrometer and for {sup 210}Po an alpha spectrometer was used. According to the conducted measurements electro-polishing was always more efficient compared to etching and in case of copper the activity reduction factors for {sup 210}Pb, {sup 210}Bi and {sup 210}Po were between 200 and 400. Etching does not remove {sup 210}Po from copper but works very efficiently from germanium. Results obtained for {sup 210}Pb and {sup 210}Bi for etched stainless steel were worse but still slightly better than those achieved for copper.

  9. Closing the RN engagement gap: which drivers of engagement matter?

    Science.gov (United States)

    Rivera, Reynaldo R; Fitzpatrick, Joyce J; Boyle, Suzanne M

    2011-06-01

    This study focused on the relationship between RNs' perceptions of drivers of engagement and their workplace engagement. In multiple studies, mostly not in healthcare, researchers found that employees engaged in their work are in the minority. This phenomenon is referred to as the engagement gap. Drivers of engagement and levels of nurse engagement were measured among 510 RNs from a large urban academic university center. The greatest difference between engaged and not-engaged nurses was in the manager action index; the smallest difference was in the salary and benefits index. The passion-for-nursing index was the only significant driver related to RN levels of engagement when controlling for all the other drivers. Nurse managers play a critical role in promoting employee engagement. The nurses' passion for nursing is an important dimension of engagement. Salary and benefits were not primary drivers in employee engagement. Copyright © 2011 Wolters Kluwer Health Lippincott Williams & Wilkins

  10. KATTS: a framework for maximizing NCLEX-RN performance.

    Science.gov (United States)

    McDowell, Betsy M

    2008-04-01

    A key indicator of the quality of a nursing education program is the performance of its graduates as first-time takers of the NCLEX-RN. As a result, nursing schools are open to strategies that strengthen the performance of their graduates on the examination. The Knowledge base, Anxiety control, Test-Taking Skills (KATTS) framework focuses on the three components of achieving a maximum score on an examination. In KATTS, all three components must be present and in proper balance to maximize a test taker's score. By strengthening not just one but all of these components, graduates can improve their overall test scores significantly. Suggested strategies for strengthening each component of KATTS are provided. This framework has been used successfully in designing remedial tutoring programs and in assisting first-time NCLEX test takers in preparing for the licensing examination.

  11. Role transition during RN-to-FNP education.

    Science.gov (United States)

    Steiner, Susan H; McLaughlin, Diana G; Hyde, Roberta S; Brown, Rosemary H; Burman, Mary E

    2008-10-01

    This study examines the role transition that occurs during RN-to-family nurse practitioner (FNP) education, described in an earlier qualitative study that identified a role transition framework of influential positive forces and obstacles. The purposes of the study were to validate the educational phase of the original framework and explore other role transition issues. The study used a descriptive correlational design by asking all FNPs in two rural western states to participate by answering a questionnaire. Findings evidenced a stronger level of agreement with the positive forces than with the obstacles. In addition, two significant relationships were found between the positive forces and obstacles and personal life circumstances. These included personal support systems, which were significant for those who had to travel to class, and personal sacrifices, which were significant for those who had children at home. Further research will focus on testing across nurse practitioner specialties nationally.

  12. {sup 220}Rn measurements and implications for earlier surveys of {sup 222}Rn; Meting van {sup 220}Rn en consequenties voor eerdere {sup 222}Rn-surveys. VERA-onderzoek

    Energy Technology Data Exchange (ETDEWEB)

    Blaauboer, R.O.

    2010-08-15

    The concentration of radioactive radon gas (Rn-222) encountered in newly constructed dwellings was lower than that expected from earlier surveys. An investigation into the response of the radon detectors used in these earlier surveys revealed that these were also sensitive to radioactive thoron (Rn-220), of which more appears to be present than originally assumed. This is the primary outcome of a detailed examination of the detectors that resulted from a national study on radiation exposure in Dutch dwellings constructed between 1994 and 2003. Detectors used in international radon comparison studies have only been set to test for radon, not thoron. Consequently, in practice it is not immediately evident that some detectors actually measure thoron as well, which is also reported as radon. The increasing interest shown by the Netherlands for thoron, provoked by survey results that appear to have been strongly affected by this radioactive isotope of radon, is mirrored by many other countries. The thoron found in dwellings seems to originate from a (frequently used) building material, possibly a finishing material, which has a relatively high thoron exhalation rate. It has more recently been determined that for many years a type of plaster was used in the Netherlands that contained phosphogypsum, a material known for its high radon content. However, it is possible that other materials incorporated into finishing layers also contribute to higher indoor thoron levels. A large portion of the total indoor exposure of occupants to radiation is from inhalation of radioactive decay products of radon and thoron. Radon and thoron are formed in the soil and earth-based building materials by radioactive decay and, because they are gaseous, they are able to diffuse into homes and other buildings. Exposure to ionizing radiation in the home accounts for approximately half of the average annual radiation dose received by a Dutch citizen. [Dutch] Er komt minder radioactief radongas

  13. Frame Wavelets with Compact Supports for L2(Rn)

    Institute of Scientific and Technical Information of China (English)

    De Yun YANG; Xing Wei ZHOU; Zhu Zhi YUAN

    2007-01-01

    The construction of frame wavelets with compact supports is a meaningful problem in wavelet analysis. In particular, it is a hard work to construct the frame wavelets with explicit analytic forms. For a given n×n real expansive matrix A, the frame-sets with respect to A are a family of sets in Rn. Based on the frame-sets, a class of high-dimensional frame wavelets with analytic forms are constructed, which can be non-bandlimited, or even compactly supported. As an application, the construction is illustrated by several examples, in which some new frame wavelets with compact supports are constructed. Moreover, since the main result of this paper is about general dilation matrices, in the examples we present a family of frame wavelets associated with some non-integer dilation matrices that is meaningful in computational geometry

  14. A writing intensive introductory course for RN to BSN students.

    Science.gov (United States)

    Tesh, Anita S; Hyde, Yolanda M; Kautz, Donald D

    2014-01-01

    This article describes learning strategies used with RN to BSN students in their 1st nursing course to successfully learn how to write formal papers using the American Psychological Association (APA) format. This 1st nursing course, a writing intensive, requires 4 short papers with self, peer, and teacher critiques and opportunities to rewrite. Students learn the style of professional nursing discourse, mastery of APA format, and development of additional skills in following directions and in critiquing their own work. An additional benefit is to enhance learning about professional nursing topics. By mastering writing skills in this initial course, students are able to successfully complete writing assignments in future courses and, in some cases, move on to publication.

  15. 230Th, 226Ra and 222Rn in abyssal sediments

    Science.gov (United States)

    Kadko, David

    1980-09-01

    A model that predicts the flux of 222Rn out of deep-sea sediment is presented. The radon is ultimately generated by 230Th which is stripped from the overlying water into the sediment. Data from many authors are compared with the model predictions. It is shown that the continental contribution of ionium is not significant, and that at low sedimentation rates, biological mixing and erosional processes strongly affect the surface concentration of the ionium. Two cores from areas of slow sediment accumulation, one from a manganese nodule region of the central Pacific and one from the Rio Grande Rise in the Atlantic were analyzed at closely spaced intervals for 230Th, 226Ra, and 210Pb. The Pacific core displayed evidence of biological mixing down to 12 cm and had a sedimentation rate of only 0.04 cm/kyr. The Atlantic core seemed to be mixed to 8 cm and had a sedimentation rate of 0.07 cm/kyr. Both cores had less total excess 230Th than predicted. Radium sediment profiles are generated from the 230Th model. Adsorbed, dissolved, and solid-phase radium is considered. According to the model, diffusional losses of radium are especially important at low sedimentation rates. Any particulate, or excess radium input is ignored in this model. The model fits the two analyzed cores if the fraction of total radium available for adsorption-desorption is about 0.5-0.7, and if K, the distribution coefficient, is about 1000. Finally, the flux of radon out of the sediments is derived from the model-generated radium profiles. It is shown that the resulting standing crop of 222Rn in the overlying water may be considered as an added constraint in budgeting 230Th and 226Ra in deep-sea sediments.

  16. Online ^{222}Rn removal by cryogenic distillation in the XENON100 experiment

    Science.gov (United States)

    Aprile, E.; Aalbers, J.; Agostini, F.; Alfonsi, M.; Amaro, F. D.; Anthony, M.; Arneodo, F.; Barrow, P.; Baudis, L.; Bauermeister, B.; Benabderrahmane, M. L.; Berger, T.; Breur, P. A.; Brown, A.; Brown, E.; Bruenner, S.; Bruno, G.; Budnik, R.; Bütikofer, L.; Calvén, J.; Cardoso, J. M. R.; Cervantes, M.; Cichon, D.; Coderre, D.; Colijn, A. P.; Conrad, J.; Cussonneau, J. P.; Decowski, M. P.; de Perio, P.; Gangi, P. Di; Giovanni, A. Di; Diglio, S.; Duchovni, E.; Eurin, G.; Fei, J.; Ferella, A. D.; Fieguth, A.; Franco, D.; Fulgione, W.; Gallo Rosso, A.; Galloway, M.; Gao, F.; Garbini, M.; Geis, C.; Goetzke, L. W.; Grandi, L.; Greene, Z.; Grignon, C.; Hasterok, C.; Hogenbirk, E.; Itay, R.; Kaminsky, B.; Kessler, G.; Kish, A.; Landsman, H.; Lang, R. F.; Lellouch, D.; Levinson, L.; Calloch, M. Le; Lin, Q.; Lindemann, S.; Lindner, M.; Lopes, J. A. M.; Manfredini, A.; Maris, I.; Undagoitia, T. Marrodán; Masbou, J.; Massoli, F. V.; Masson, D.; Mayani, D.; Meng, Y.; Messina, M.; Micheneau, K.; Miguez, B.; Molinario, A.; Murra, M.; Naganoma, J.; Ni, K.; Oberlack, U.; Orrigo, S. E. A.; Pakarha, P.; Pelssers, B.; Persiani, R.; Piastra, F.; Pienaar, J.; Piro, M.-C.; Pizzella, V.; Plante, G.; Priel, N.; Rauch, L.; Reichard, S.; Reuter, C.; Rizzo, A.; Rosendahl, S.; Rupp, N.; Saldanha, R.; dos Santos, J. M. F.; Sartorelli, G.; Scheibelhut, M.; Schindler, S.; Schreiner, J.; Schumann, M.; Lavina, L. Scotto; Selvi, M.; Shagin, P.; Shockley, E.; Silva, M.; Simgen, H.; Sivers, M. v.; Stein, A.; Thers, D.; Tiseni, A.; Trinchero, G.; Tunnell, C.; Upole, N.; Wang, H.; Wei, Y.; Weinheimer, C.; Wulf, J.; Ye, J.; Zhang, Y.; Cristescu, I.

    2017-06-01

    We describe the purification of xenon from traces of the radioactive noble gas radon using a cryogenic distillation column. The distillation column was integrated into the gas purification loop of the XENON100 detector for online radon removal. This enabled us to significantly reduce the constant ^{222}Rn background originating from radon emanation. After inserting an auxiliary ^{222}Rn emanation source in the gas loop, we determined a radon reduction factor of R > 27 (95% C.L.) for the distillation column by monitoring the ^{222}Rn activity concentration inside the XENON100 detector.

  17. Online {sup 222}Rn removal by cryogenic distillation in the XENON100 experiment

    Energy Technology Data Exchange (ETDEWEB)

    Aprile, E.; Anthony, M.; De Perio, P.; Gao, F.; Goetzke, L.W.; Greene, Z.; Lin, Q.; Messina, M.; Plante, G.; Rizzo, A.; Zhang, Y. [Columbia University, Physics Department, New York, NY (United States); Aalbers, J.; Breur, P.A.; Brown, A.; Colijn, A.P.; Decowski, M.P.; Hogenbirk, E.; Tiseni, A. [Nikhef and the University of Amsterdam, Science Park, Amsterdam (Netherlands); Agostini, F. [INFN-Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, L' Aquila (Italy); University of Bologna, Department of Physics and Astrophysics, Bologna (Italy); INFN-Bologna (Italy); Alfonsi, M.; Geis, C.; Grignon, C.; Oberlack, U.; Scheibelhut, M.; Schindler, S. [Johannes Gutenberg-Universitaet Mainz, Institut fuer Physik and Exzellenzcluster PRISMA, Mainz (Germany); Amaro, F.D.; Cardoso, J.M.R.; Lopes, J.A.M.; Orrigo, S.E.A.; Santos, J.M.F. dos; Silva, M. [University of Coimbra, Department of Physics, Coimbra (Portugal); Arneodo, F.; Benabderrahmane, M.L.; Di Giovanni, A.; Maris, I. [New York University Abu Dhabi, Abu Dhabi (United Arab Emirates); Barrow, P.; Baudis, L.; Franco, D.; Galloway, M.; Kessler, G.; Kish, A.; Mayani, D.; Pakarha, P.; Piastra, F.; Wei, Y.; Wulf, J. [University of Zurich, Physik-Institut, Zurich (Switzerland); Bauermeister, B. [Johannes Gutenberg-Universitaet Mainz, Institut fuer Physik and Exzellenzcluster PRISMA, Mainz (Germany); Stockholm University, AlbaNova, Department of Physics, Oskar Klein Centre, Stockholm (Sweden); Berger, T.; Brown, E.; Piro, M.C. [Rensselaer Polytechnic Institute, Department of Physics, Applied Physics and Astronomy, Troy, NY (United States); Bruenner, S.; Cichon, D.; Eurin, G.; Hasterok, C.; Lindner, M.; Undagoitia, T.M.; Pizzella, V.; Rauch, L.; Rupp, N.; Schreiner, J.; Simgen, H. [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany); Bruno, G.; Gallo Rosso, A.; Molinario, A. [INFN-Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, L' Aquila (Italy); Budnik, R.; Duchovni, E.; Itay, R.; Landsman, H.; Lellouch, D.; Levinson, L.; Manfredini, A.; Priel, N. [Weizmann Institute of Science, Department of Particle Physics and Astrophysics, Rehovot (Israel); Buetikofer, L.; Coderre, D.; Kaminsky, B.; Schumann, M.; Sivers, M. v. [Universitaet Freiburg, Physikalisches Institut, Freiburg (Germany); Calven, J.; Conrad, J.; Ferella, A.D.; Pelssers, B. [Stockholm University, AlbaNova, Department of Physics, Oskar Klein Centre, Stockholm (Sweden); Cervantes, M.; Lang, R.F.; Masson, D.; Pienaar, J.; Reichard, S.; Reuter, C. [Purdue University, Department of Physics and Astronomy, West Lafayette, IN (United States); Cussonneau, J.P.; Diglio, S.; Le Calloch, M.; Masbou, J.; Micheneau, K.; Persiani, R.; Thers, D. [Universite de Nantes, SUBATECH, Ecole des Mines de Nantes, CNRS/In2p3, Nantes (France); Di Gangi, P.; Garbini, M.; Massoli, F.V.; Sartorelli, G.; Selvi, M. [University of Bologna, Department of Physics and Astrophysics, Bologna (Italy); INFN, Bologna (Italy); Fei, J.; Ni, K.; Ye, J. [University of California, Department of Physics, San Diego, CA (United States); Fieguth, A.; Murra, M.; Rosendahl, S.; Weinheimer, C. [Westfaelische Wilhelms-Universitaet Muenster, Institut fuer Kernphysik, Muenster (Germany); Fulgione, W. [INFN-Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, L' Aquila (Italy); INFN-Torino (Italy); Osservatorio Astrofisico di Torino, Turin (Italy); Grandi, L.; Saldanha, R.; Shockley, E.; Upole, N. [University of Chicago, Department of Physics and Kavli Institute of Cosmological Physics, Chicago, IL (United States); Lindemann, S. [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany); Universitaet Freiburg, Physikalisches Institut, Freiburg (Germany); Meng, Y.; Stein, A.; Wang, H. [University of California, Physics and Astronomy Department, Los Angeles, CA (United States); Miguez, B.; Trinchero, G. [INFN-Torino (Italy); Osservatorio Astrofisico di Torino, Turin (Italy); Naganoma, J.; Shagin, P. [Rice University, Department of Physics and Astronomy, Houston, TX (United States); Lavina, L.S. [LPNHE, Universite Pierre et Marie Curie, Universite Paris Diderot, CNRS/IN2P3, Paris (France); Tunnell, C. [Nikhef and the University of Amsterdam, Science Park, Amsterdam (Netherlands); University of Chicago, Department of Physics and Kavli Institute of Cosmological Physics, Chicago, IL (United States); Cristescu, I. [Karlsruhe Institute of Technology, Tritium Laboratory Karlsruhe, Eggenstein-Leopoldshafen (Germany); Collaboration: XENON Collaboration

    2017-06-15

    We describe the purification of xenon from traces of the radioactive noble gas radon using a cryogenic distillation column. The distillation column was integrated into the gas purification loop of the XENON100 detector for online radon removal. This enabled us to significantly reduce the constant {sup 222}Rn background originating from radon emanation. After inserting an auxiliary {sup 222}Rn emanation source in the gas loop, we determined a radon reduction factor of R > 27 (95% C.L.) for the distillation column by monitoring the {sup 222}Rn activity concentration inside the XENON100 detector. (orig.)

  18. Indoor {sup 22}Rn and {sup 222}Rn concentration measurements inside the Teotihuacan pyramids using NTD and E-PERM methodologies

    Energy Technology Data Exchange (ETDEWEB)

    Espinosa, G. [Instituto de Fisica, UNAM, Apartado Postal 20-364, 01000 Mexico, D.F. (Mexico)]. E-mail: espinosa@fisica.unam.mx; Golzarri, J.I. [Instituto de Fisica, UNAM, Apartado Postal 20-364, 01000 Mexico, D.F. (Mexico); Martinez, T. [Facultad de Quimica, UNAM, Edificio D, Ciudad Universitaria, Mexico, D.F. (Mexico); Navarrete, M. [Facultad de Quimica, UNAM, Edificio D, Ciudad Universitaria, Mexico, D.F. (Mexico); Bogard, J. [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6480 (United States); Martinez, G. [Coordinacion Nacional de Conservacion del Patrimonio Cultural, Xicotencatl y General Anaya s/n, 04120 Mexico, D.F. (Mexico); Juarez, F. [Instituto de Geofisica, UNAM, Ciudad Universitaria, 04510 Mexico, D.F. (Mexico)

    2005-11-15

    Measurements of {sup 22}Rn (Thoron) and {sup 222}Rn (Radon) concentrations, inside the Sun and Moon pyramids of Teotihuacan's archeological zone in Mexico, are reported in this work. Two well-established methods, nuclear track detectors (NTDs), using open-close end cups with internal and external detectors of CR-39 polymer, and electret-passive environmental radon monitoring (E-PERM) were used for the measurements. This experiment had two objectives: to obtain better confidence in the {sup 22}Rn and {sup 222}Rn measurements inside the archeological tunnels, and to compare the data obtained in each one of the two methods. This experiment is specially interesting because of the very peculiar conditions where the measurements are made: high humidity, labyrinths with air currents, but almost constant temperature inside of the pyramid tunnels and galleries, notwithstanding of the temperature changes between the day and the night outside of the pyramid body. The {sup 222}Rn concentrations found in both the pyramids were lower than the action level proposed by the ICRP-65. These tunnels are not open to the public, but researchers from the Anthropology Institutions spend part of their time working there, in periods varying from 3 to 5 months.

  19. Confirmatory study for the congenital hypothyroidism diagnostic in newborns with suspicious neonatal sieve;Estudio confirmatorio para el diagnostico de hipotiroidismo congenito en recien nacidos con tamiz neonatal sospechoso

    Energy Technology Data Exchange (ETDEWEB)

    Murillo V, D.; Badillo A, V.; Villasana R, A. P., E-mail: black_dany87@hotmail.co [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Laboratorio de Radioinmunoanalisis, Calle Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico)

    2009-10-15

    The congenital hypothyroidism is an endocrine illness knows from the X V century. It is caused by the anatomical or functional absence of the thyroid gland, what causes a deficiency in the thyroid hormones production. These hormones are indispensable for an appropriate physical and mental development from the first moments of the life. This illness is the more frequent cause of avoidable mental retardation in the child. In Mexico, is considered that 1 of each 2,537 newborns present congenital hypothyroidism, this frequency is extraordinarily high in relation to other countries. For the opportune confirmation of this illness is carried out by means of the radio immuno analysis that is a competitive type technique which is based on the antigen-antibody reaction. To the present antigen in the sample problem, is go to add a constant and known quantity of labelled antigen (hot antigen). The labelled antigens are formed substituting some of the normal atoms of the antigen for the corresponding radioactive isotope I{sup 125} in the molecule. The two types of antigens, cold and hot will compete, in equality of conditions, to unite with the available antibody. The concentrations of labelled antigen and antibody not change, the only variable of the system is the non labelled antigen (cold antigen) concentration. As much as more it is the quantity of cold antigen in the sample problem, it is displaced at the hot antigen and therefore they are fixed to the antibody smaller quantities of labelled antigen. Therefore, the formation of radioactive complexes (Ag-Ac) it varies in function of the non labelled antigen concentration: to major non labelled antigen concentration, major formation of non labelled antigen-antibody complexes, and minor formation of radioactive complexes and vice versa. 29 cases were analyzed with suspicion of congenital hypothyroidism therefore the T4 neonatal and TSH neonatal were quantified by the radio immuno analysis technique giving the confirmation of a single positive case as result. In this way it is contributed to the opportune confirmation of the results provided by the neonatal sieve for the detection and opportune treatment in order to avoid the congenital hypothyroidism consequences. (Author)

  20. Evaluación de la reserva ovárica mediante test de clomifeno, ultrasonido vaginal y determinación de hormona antimulleriana en pacientes con hipotiroidismo primario autoinmune

    OpenAIRE

    Morales Martínez, Felipe Arturo

    2013-01-01

    La enfermedad tiroidea autoinmune se ha asociado a baja reserva ovárica, la cual puede ser causada por muchos otros factores incluyendo iatrogénica, quimioterapia, genética, infecciosa, autoinmune e idiopática. Gerard en el 2000, describió las principales etiologías de el fallo ovárico prematuro, siendo la etiología idiopática y autoinmune las más frecuentes, seguido del Síndrome de Turner y quimioterapia entre otras. Ejemplos de autoinmunidad endocrina auto inmunitaria asociada al fallo ovár...

  1. Continuous measurements of outdoor {sup 222}Rn concentrations for three years at one location in Colorado

    Energy Technology Data Exchange (ETDEWEB)

    Borak, T.B.; Baynes, S.A. [Colorado State Univ., Ft. Collins, CO (United States). Dept. of Radiological Health Sciences

    1999-04-01

    Measurements were made of {sup 222}Rn concentrations outdoors in Ft. Collins, Colorado, using a continuously sampling scintillation flask between January 1993 and December 1995. These data were analyzed for hourly, daily, and seasonal variations. The average {sup 222}Rn concentration at 1 m above the ground was 18 {+-} 10 Bq m{sup {minus}3} with a geometric mean of 15 Bq m{sup {minus}3} and a geometric standard deviation of 1.7. Hourly averaged data indicated a diurnal pattern with the outdoor {sup 222}Rn concentration reaching a maximum in the early morning between 4:00 a.m. and 6:00 a.m. and a broad minimum between 1:00 p.m. and 4:00 p.m. in the afternoon. An analysis also indicated that the outdoor {sup 222}Rn concentrations were consistently lowest during the spring (March and April) and highest during the late summer (July--September).

  2. The use of discriminant function analysis to predict student success on the NCLEX-RN.

    Science.gov (United States)

    Haas, Richard E; Nugent, Katherine E; Rule, Rebecca A

    2004-10-01

    Predicting whether a student will be successful on the National Council Licensure Examination for Registered Nurses (NCLEX-RN) has been an important endeavor for faculty in schools of nursing for the past 2 decades. Extensive documentation exists in the literature concerning research aimed at exploring the academic and nonacademic predictors of success on the NCLEX-RN. Reviews of the findings of these studies indicate that various factors emerge as academic predictors of success. The results of this study suggest that first-time success on the NCLEX-RN can be predicted with a high level of accuracy using existing student data. The findings also support the belief that it is possible to identify students who may be at risk for unsuccessful first time performance on the NCLEX-RN. Early identification of at-risk students will promote timely intervention strategies to optimize the students' potential for success.

  3. The relationship of critical thinking to performance on the NCLEX-RN.

    Science.gov (United States)

    Giddens, Jean; Gloeckner, Gene W

    2005-02-01

    This study investigated the relationship of critical thinking to performance on the NCLEX-RN. The sample (N = 218) was composed of baccalaureate nursing students from a university-based nursing program in the southwestern United States, and participants completed two critical thinking instruments: the California Critical Thinking Skills Test (CCTST) and the California Critical Thinking Disposition Inventory (CCTDI). Results showed that there was a difference between participants who passed and failed the NCLEX-RN on both the entry and exit CCTST. Students in the pass group also had higher scores on the exit CCTDI, but scores for the fail group were comparable with national norms for nursing students. No changes in CCTST or CCTDI total scores occurred between program entry and exit, and neither instrument was useful in the prediction of NCLEX-RN performance. There were no differences in NCLEX-RN performance between the pass and fail groups for age or gender.

  4. Best practices in NCLEX-RN readiness preparation for baccalaureate student success.

    Science.gov (United States)

    Frith, Karen H; Sewell, Jeanne P; Clark, Deborah J

    2008-01-01

    Success for first-time takers of the NCLEX-RN has implications for the students, faculty, and nursing programs. As the passing standard for the NCLEX-RN has risen, some programs have experienced a corresponding decrease in their graduates' first-time pass rates. This article describes one baccalaureate program's journey from low first-time NCLEX-RN pass rates in 2001 to greater student and program success using a data-based, analytical approach. Although passing an exit exam was a program requirement for 20 years, the change to computerized testing and more in-depth test preparation has enhanced opportunities for success for students and reduced stress among faculty. The resulting best practices for preparing students for NCLEX-RN success are described.

  5. EMERGÊNCIA DOS "CONDOMÍNIOS-CLUBE" NA ZONA SUL DE NATAL/RN, BRASIL

    Directory of Open Access Journals (Sweden)

    Felipe Fernandes de Araújo

    2012-01-01

    Full Text Available Este documento tiene como objetivo discutir el surgimiento de una nueva tipología residencial que se ha extendido en el sur de Natal / RN, los condominios llamado Club. Su principal característica es la apelación a los artículos de ocio más diversos, que son utilizados por los empresarios urbanos como una forma de crear un nuevo estilo de vida y un nuevo producto que se vende. La base teórica de este trabajo se basa en el enfoque heterodoxo de la coordinación espacial realizada por Pedro Abramo. Esta perspectiva considera el espacio urbano como un conjunto de inventario de viviendas que son ofrecidas por los empresarios urbanos. En general, el orden urbano y el ambiente residencial es incierto, porque sufren cambios derivados de la aparición de las innovaciones de espacio causadas por empresarios urbanos en busca de beneficios extraordinarios. En el caso de la zona sur de Natal, la construcción de carreteras principales que conectan esta zona de la ciudad al vecino municipio de Parnamirim, que ha sido el blanco de la abundancia del mercado inmobiliario de Natal. El ciclo de vida de los inventarios residenciales de la Zona Sur de Natal ha cambiado con el tiempo, desde el principio de la vivienda en grandes alojamientos para la producción de proyectos verticais. En la actualidad, un fenómeno nuevo que se plantea es la propagación de una nueva clasificación, los condominios club. Al ser un caso reciente en que los proyectos se encuentran todavía en fase de lanzamiento o de la construcción, el estudio se llevará a cabo mediante el análisis de marketing utilizadas por los empresarios urbanos para atraer a los consumidores a través de panfletos y folletos.

  6. An investigation of predictors of NCLEX-RN outcomes among nursing content standardized tests.

    Science.gov (United States)

    Yeom, Yei-Jin

    2013-12-01

    In order to meet increased demands for qualified registered nurses and prevent negative effects from graduates' failure on the National Council Licensure Examination-Registered Nurse, it is important to promote students' success in the exam. The purpose of this study was to investigate effective predictors of NCLEX-RN outcomes on the first attempt among nursing content standardized tests (adult medical-surgical, fundamentals for nursing, pharmacology, maternal-newborn, nursing care of children, mental health, community health, and leadership and management) conducted throughout the nursing program. NCLEX-RN outcomes and individual adjusted scores on the standardized tests of 151 graduates from the traditional baccalaureate nursing program of a public university located in the Midwest from May 2010 to December 2011 were analyzed by a t-test and logistic regression. The participants included 118 graduates who passed and 33 graduates who failed the NCLEX-RN on the first attempt. Significant statistical differences were found between the two groups with NCLEX-RN success and failure in the individual adjusted scores on all of the standardized tests except the fundamental for nursing (p=.62) and nursing care of children (p=.759) standardized tests. In addition, logistic regression indicated that the overall regression models were significant in predicting both NCLEX-RN success and failure. Adult medical-surgical, pharmacology, and community health standardized tests were central to the prediction of both NCLEX-RN success and failure; however, a much lower percentage of NCLEX-RN failure than success was classified. It can be concluded that the adult medical-surgical, pharmacology, and community health standardized tests were effective in predicting NCLEX-RN success and not effective in predicting NCLEX-RN failure on the first attempt. The NCLEX-RN success predictors can be utilized to identify students at risk and provide early remediation. After early remediation is

  7. Characterization of the 222Rn family turbulent transport in the convective atmospheric boundary layer

    Directory of Open Access Journals (Sweden)

    S. Galmarini

    2007-01-01

    Full Text Available The combined effect of turbulent transport and radioactive decay on the distribution of 222Rn and its progeny in convective atmospheric boundary layers (CBL is investigated. Large eddy simulation is used to simulate their dispersion in steady state CBL and in unsteady conditions represented by the growth of a CBL within a pre-existing reservoir layer. The exact decomposition of the concentration and flux budget equations under steady state conditions allowed us to determine which processes are responsible for the vertical distribution of 222Rn and its progeny. Their mean concentrations are directly correlated with their half-life, e.g. 222Rn and 210Pb are the most abundant whereas 218Po show the lowest concentrations. 222Rn flux decreases linearly with height and its flux budget is similar to the one of inert emitted scalar, i.e., a balance between on the one hand the gradient and the buoyancy production terms, and on the other hand the pressure and dissipation at smaller scales which tends to destroy the fluxes. While 222Rn exhibits the typical bottom-up behavior, the maximum flux location of the daughters is moving upwards while their rank in the 222Rn progeny is increasing leading to a typical top-down behavior for 210Pb. We also found that the relevant radioactive decaying contributions of 222Rn short-lived daughters (218Po and 214Pb act as flux sources leading to deviations from the linear flux shape. In addition, while analyzing the vertical distribution of the radioactive decay contributions to the concentrations, e.g. the decaying zone, we found a variation in height of 222Rn daughters' radioactive transformations. Under unsteady conditions, the same behaviors reported under steady state conditions are found: deviation of the fluxes from the linear shape for 218Po, enhanced discrepancy in height of the radioactive transformation contributions for all the daughters. In addition, 222Rn and its progeny concentrations decrease due to the

  8. NFκB induces overexpression of bovine FcRn: a novel mechanism that further contributes to the enhanced immune response in genetically modified animals carrying extra copies of FcRn.

    Science.gov (United States)

    Cervenak, Judit; Doleschall, Márton; Bender, Balázs; Mayer, Balázs; Schneider, Zita; Doleschall, Zoltán; Zhao, Yaofeng; Bősze, Zsuzsanna; Hammarström, Lennart; Oster, Wolfgang; Kacskovics, Imre

    2013-01-01

    Among the many functions of the neonatal Fc receptor (FcRn) for IgG, it binds to IgG-opsonized antigen complexes and propagates their traffic into lysosomes where antigen processing occurs. We previously reported that transgenic (Tg) mice and rabbits that carry multiple copies and overexpress FcRn have augmented humoral immune responses. Nuclear factor-kappa B (NFκB) is a critical molecule in the signaling cascade in the immune response. NFκB induces human FcRn expression and our previous in silico analysis suggested NFκB binding sites in the promoter region of the bovine (b) FcRn α-chain gene (FCGRT). Here, we report the identification of three NFκB transcription binding sites in the promoter region of this gene using luciferase reporter gene technology, electromobility shift assay and supershift analysis. Stimulation of primary bovine endothelial cells with the Toll-like receptor-4 ligand lipopolysaccharide (LPS), which mediates its effect via NFκB, resulted in rapid upregulation of the bFcRn expression and a control gene, bovine E-selectin. This rapid bFcRn gene induction was also observed in the spleen of bFcRn Tg mice treated with intraperitoneally injected LPS, analyzed by northern blot analysis. Finally, NFκB-mediated bFcRn upregulation was confirmed at the protein level in macrophages isolated from the bFcRn Tg mice using flow cytometry with a newly developed FcRn specific monoclonal antibody that does not cross-react with the mouse FcRn. We conclude that NFκB regulates bFcRn expression and thus optimizes its functions, e.g., in the professional antigen presenting cells, and contributes to the much augmented humoral immune response in the bFcRn Tg mice.

  9. Sårbare børn og unge i tandplejeregi i Danmark

    DEFF Research Database (Denmark)

    Uldum, Birgitte; Christensen, Hanne Nødgaard; Haubek, Dorte

    2016-01-01

    Hvorledes identificeres sårbare børn og unge i tandplejeregi i Danmark? I denne artikel sættes fokus på danske sårbare børn og unge i tandplejeregi og på udviklingen I Danmark siden 2009. En dansk spørgeskemaundersøgelse om tandplejens erfaring fra 2008 omtales kort. Der lægges vægt på det odonto...

  10. Hvilken evidens er der for medikamentel behandling af depression hos børn og unge?

    DEFF Research Database (Denmark)

    Thomsen, Per Hove; Sørensen, Merete Juul

    2007-01-01

    Depression hos børn og unge er relativt hyppigt forekommende og kan have svære konsekvenser. Den specifikke antidepressive behandling kan være psykoterapeutisk eller medikamentel. I artiklen gennemgås på baggrund af systematisk litteratursøgning den videnskabelige evidens for medikamentel...... behandling af depression hos børn og unge med hovedvægten lagt på de mest veldokumenterede medikamenter: selektive serotoningenoptagelseshæmmere....

  11. A review of intervention studies to promote NCLEX-RN success of baccalaureate students.

    Science.gov (United States)

    DiBartolo, Mary C; Seldomridge, Lisa A

    2008-01-01

    Numerous studies have identified factors to predict NCLEX-RN but few have evaluated interventions to promote success. An integrative literature review of intervention studies used in baccalaureate programs to improve NCLEX-RN success demonstrated that although pass rates increased, researchers were limited in their ability to attribute success specifically to the interventions. Further investigation using more rigorous designs with larger, diverse student groups to evaluate both type and timing of various interventions is recommended.

  12. Do progression and remediation policies improve NCLEX-RN pass rates?

    Science.gov (United States)

    Morrison, Susan; Free, Kathleen Walsh; Newman, Mary

    2008-01-01

    Administrators at 5 schools of nursing who implemented a progression policy based on HESI Exit Examtrade mark scores were interviewed regarding their NCLEX-RN pass rates before and after initiating the policy and methods used for remediation. Even though the methods used for remediation were quite different among the participating schools, data obtained from these interviews indicated that the schools' NCLEX-RN pass rates improved 9-41% within 2 years after implementing the progression policies.

  13. From beta-blockers to boot camp: Preparing students for the NCLEX-RN.

    Science.gov (United States)

    Herrman, Judith W; Johnson, Amy Nagorski

    2009-01-01

    Although it is thought that reviewing essential materials and learning how to answer computer-generated questions are optimal preparations for NCLEX-RN, strategies that build knowledge, self-confidence, and professionalism of the nurse taking the exam are equally important. A senior seminar course that guides formal NCLEX-RN preparation is presented in this article with specific course strategies and a blueprint of seminar content that can be adapted to the nursing curriculum.

  14. FcRn expression, ligands binding properties and its regulation in human immune cells and hepatocytes

    OpenAIRE

    2007-01-01

    ABSTRACT Expression and diverse functions of MHC class I related neonatal Fc receptor in different tissues is continually reported. To contribute to the understanding of how the receptor functions according to cell type, we investigated the expression and ligands binding properties of FcRn in human immune cells and hepatocytes. Here, we report that heterodimeric FcRn is expressed in these cells as evidenced by RT-PCR, Western immunoblottting and flow cytometry. The receptor expression i...

  15. A new beaded carbon molecular sieve sorbent for 222Rn monitoring.

    Science.gov (United States)

    Scarpitta, S C

    1996-05-01

    A new commercially available beaded carbon molecular sieve sorbent, Carboxen-564 (20/45 mesh), was tested and compared to Calgon-PCB (40/80) activated carbon for its adsorptive and desorptive characteristics under controlled conditions of temperature (25 degrees C) and relative humidity (RH). The amount of water vapor adsorbed by the beaded carbon molecular sieve material was typically a factor of 4 lower than the activated carbon, with a concomitant fourfold increase in the 222Rn adsorption coefficient, K(Rn). The maximum K(Rn) value for a thin layer of Carboxen-564, following a 2-d exposure at 40% RH, was 7.2 Bq kg(-1) per Bq m(-3). The K(Rn) or a 1-cm bed, following a 2-d exposure was 5.5 Bq m(-3), a 25% reduction. Under dynamic sampling conditions, where 0.4 g of the beaded carbon molecular sieve was contained in a 6 cm x 0.4 cm diameter tube, the maximum K(Rn) value was 6.5 Bq m(-3) after 2.5 h of sampling at 29% RH when the input flow rate was 4.2 x 10(-3) m3 h-1. Kinetic studies were also conducted under passive sampling conditions. The data show that the 222Rn buildup time-constant for a thin layer of the beaded carbon molecular sieve material was 1.3 h, whereas that of a 1 cm bed was 13 h. The 222Rn desorption time-constants, from gram amounts of the beaded carbon molecular sieve material into air and into a commercially available toluene based liquid scintillation cocktail, were 2 h and 3 h, respectively. Carboxen's high 222Rn adsorbing capacity, rapid kinetics, hydrophobicity and physical properties makes it an attractive alternative to other commercially available activated carbon used in passive and dynamic sampling devices.

  16. Update of the BIPM.RI(II)-K1.Rn-222 comparison of activity measurements for the radionuclide {sup 222}Rn to include the LNE-LNHB, France

    Energy Technology Data Exchange (ETDEWEB)

    Michotte, C.; Ratel, G. [Bureau International de Poids et Mesures, Pavillon de Breteuil, F-92312 Sevres cedex (France); Cassette, P. [Bureau International de Poids et Mesures, Pavillon de Breteuil, F-92312 Sevres cedex (France); Laboratoire national de metrologie et d' essais -Laboratoire national Henri Becquerel, 91191 Gif-sur-Yvette cedex (France)

    2012-02-15

    In 2007, the Laboratoire national de metrologie et d'essais - Laboratoire national Henri Becquerel (LNE-LNHB), France submitted a sample of known activity of {sup 222}Rn to the International Reference System (SIR) for comparison. The value of the activity submitted was about 90 kBq. This key comparison result joins that of Switzerland and Germany in the key comparison database that now contains three results, identifier BIPM.RI(II)-K1.Rn-222. Consequently, the KCRV has been updated and the degrees of equivalence with the KCRV have been evaluated. (authors)

  17. Octupole collectivity in $^{220}$Rn and $^{224}$Ra

    CERN Document Server

    Gaffney, Liam Paul

    Collective properties of the radioactive nuclei $^{220}$Rn and $^{224}$Ra have been studied via Coulomb excitation of a 2.8$\\,$A.MeV radioactive ion beam (RIB) incident upon $^{60}$Ni, $^{112,114}$Cd and $^{120}$Sn targets. The experiments took place at the REX-ISOLDE RIB facility, CERN. De-excitation $\\gamma$-ray yields following multiple-step Coulomb excitation were detected in coincidence with recoiling target nuclei in the Miniball spectrometer. For the first time, B(E3;3$^+ \\rightarrow 0^+$) values have been directly measured with a radioactive ion beam. In the process, $^{224}$Ra becomes the heaviest post-accelerated RIB to date at ISOLDE (with the possible exception of the quasi-stable $^{238}$U). The measurements presented in this thesis represent a tripling of the number of nuclei around Z$\\simeq88$ and N$\\simeq134$, for which direct measurements of the octupole collectivity have been performed. The only previous measurements being for the relatively long-lived $^{226}$Ra. The $\\gamma$-ray yields, in...

  18. RN to FNP: a qualitative study of role transition.

    Science.gov (United States)

    Heitz, Laura J; Steiner, Susan H; Burman, Mary E

    2004-09-01

    Registered nurses who return to school in a nurse practitioner program undergo role transition throughout the educational process and into the postgraduate period. This study examined the role transition that occurs in family nurse practitioner (FNP) students. A descriptive, qualitative design was used with in-depth telephone interviews of 9 female FNPs who had recently graduated. A conceptual model was generated that described the role transition from RN to FNP. Two phases of role transition occurred and were depicted by the central categories that emerged: extrinsic obstacles, intrinsic obstacles, turbulence, positive extrinsic forces, positive intrinsic forces, and role development. Although the central categories were found to be the same in Phase I and Phase II, the defining characteristics differed. This study has implications for FNPs, students, and educators regarding role transition. It presents new findings not identified in prior research: personal commitments and sacrifices were identified as specific obstacles encountered during the educational process, and differences were found between inexperienced and experienced RNs in relation to the FNP role transition during the educational period.

  19. Using 222 Rn for hydrograph separationin a micro basin (Luxembourg

    Directory of Open Access Journals (Sweden)

    L. Hoffmann

    2005-06-01

    Full Text Available In order to obtain information on the hydrological signature of rivers during and after heavy rain events, small catchment areas are selected as experimental sites. Hydrograph separations based on environmental tracers are performed. Natural isotopic tracers such as 18O, 2H and particularly 222Rn may help to distinguish the components dominating the outflow, particularly of 'pre-event waters', 'event waters' and 'post-event waters'. Even with moderate concentrations in groundwater, radon can be a very sensitive indicator of groundwater input into rivers. The selected microbasin under investigation is situated in the western part of Luxembourg and belongs to the Attert River catchment. At chosen points at the basin's outflow radon detectors continuously measure radon activity in water. The radon monitors are installed together with high precision thermometers, conductivity meters, flow meters and automatic water samplers for chemical analysis. Besides the continuous measurements, grab water samples are taken at different locations along the stream, most of them during periods of heavy rain events. Presented are the results of a one year measurement campaign. During the dry season i.e. during more or less continuous discharge conditions, the observed mean values do not show substantial variations and can be used as reference values. Fluctuations of the measured data during rain events are discussed and the interplay between the different parameters analysed.

  20. Estimating the relation between groundwater and river water by measuring the concentration of Rn-222

    Energy Technology Data Exchange (ETDEWEB)

    Yoneda, Minoru; Morisawa, Shinsuke [Kyoto Univ. (Japan). Faculty of Engineering

    1997-02-01

    This study aimed to estimate the relationship between groundwater in shallow layer and river water by determining the concentrations of {sup 222}Rn and nitric nitrogen along with water temperature. The region around ca. 20 km along river A in a certain basin was chosen as a test area. The Rn concentration of groundwater was determined by Rn extracting with toluene and counting in liquid scintillation counter, whereas for river water, it was determined by activated charcoal passive collector method developed by the authors, by which the amount of Rn adsorbed on activated charcoal was estimated by Ge-solid state detector. In addition, water temperature and nitric nitrogen concentration were measured at various points in the test area. Thus, a distribution map of the three parameters was made on the basis of the data obtained in December, 1989. Since Rn concentration is generally higher in ground water than river water and the water temperature in December is higher in the former, it seems likely that the concentrations of Rn and nitric nitrogen would become higher in the area where ground water soaks into river water. Thus, the directions of ground water flow at the respective sites along river A were estimated from the data regarding the properties of ground water. (M.N.)

  1. SOLUTIONS FOR A NONHOMOGENEOUS ELLIPTIC PROBLEM INVOLVING CRITICAL SOBOLEV-HARDY EXPONENT IN RN

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    For the following elliptic problem{-△u -μu/|x|2=|u|2*(s)-2u/|x|s+h(x),on RNu∈D1,2(RN), N≥3, 0≤μ<(μ)=(N-2)2/4, 0≤s<2,where 2*(s)= 2(N-s)/N-2 is the critical Sobolev-Hardy exponent, h(x) ∈ (D1,2(RN))*, the dual space of (D1,2(RN)), with h(x) ≥ ((≠))0. By Ekeland's variational principle, subsuper solutions and a Mountain Pass theorem, the authors prove that the above problem has at least two distinct solutions if‖h‖* < CN,sASN-s/4-2s (1 -μ/μ)1/2, CN,s =4-2s/N-2(N-2/N+2-2s)N+2-2s/4-2s and As =infu∈D1,2(RN)\\{0}∫RN(|▽u|2-μu2/|x|2)dx/(∫RN|u|2*(s)/|x|sdx)2/2*(s).

  2. 222Rn-calibrated mercury fluxes from terrestrial surface of southern Africa

    Directory of Open Access Journals (Sweden)

    F. Slemr

    2013-07-01

    Full Text Available Gaseous elemental mercury (GEM and 222Rn, a radioactive gas of primarily terrestrial origin with a half-life of 3.8 days, have been measured simultaneously at Cape Point, South Africa, since March 2007. Between March 2007 and December 2011, altogether 191 events with high 222Rn concentrations were identified. GEM correlated with 222Rn in 94 of the events and was constant during almost all the remaining events without significant correlation. The average GEM / 222Rn flux ratio of all events including the non-significant ones was −0.0001 with a standard error of ±0.0030 pg mBq−1. Weighted with the event duration, the average GEM / 222Rn flux ratio was −0.0048 ± 0.0011 pg mBq−1. With an emission rate of 1.1 222Rn atoms cm−2 s−1 and a correction for the transport time, this flux ratio corresponds to a radon-calibrated flux of about −0.54 ng GEM m−2 h−1 with a standard error of ±0.13 ng GEM m−2 h−1 (n = 191. With wet deposition, which is not included in this estimate, the terrestrial surface of southern Africa seems to be a net mercury sink of about −1.55 ng m−2 h−1. The additional contribution of an unknown but presumably significant deposition of reactive gaseous mercury would further increase this sink.

  3. Exhalation of (222)Rn from phosphogypsum piles located at the Southwest of Spain.

    Science.gov (United States)

    Dueñas, C; Liger, E; Cañete, S; Pérez, M; Bolívar, J P

    2007-01-01

    Phosphogypsum (PG) is a waste product of the phosphoric acid production process and contains, generally, high activity concentrations of uranium series radionuclides. It is stored in piles formed over the last 40 years close to the town of Huelva (Southwest of Spain). The very broad expanse of the PG piles (about 1200 ha) produces a local, but unambiguous, radioactive impact to their surroundings. In 1992, the regional government of Andalusia restored an area of 400 ha by covering it with a 25-cm thick layer of natural soil and, currently, there is an additional zone of 400 ha in course of restoration (unrestored) and the same area of active PG stacks. Due to the high activity concentration of (226)Ra in active PG stacks (average 647 Bq kg(-1)), a significant exhalation of (222)Rn could be produced from the surface of the piles. Measurements have been made of (222)Rn exhalation from active PG stacks and from restored and unrestored zones. The (222)Rn exhalation from unrestored zones is half of that of the active PG stacks. Following restoration, the (222)Rn exhalation is approximately eight times lower than the active PG stacks. The activity concentrations of natural radionuclides ((226)Ra, (40)K, (232)Th) in the mentioned zones have been determined. This study was also conducted to determine the effect of (226)Ra activity concentration on the (222)Rn exhalation, and a good correlation was obtained between the (222)Rn exhalation and (226)Ra activity, porosity and density of soil.

  4. Simulation modeling of vegetation effects on [sup 222]Rn transport into basements

    Energy Technology Data Exchange (ETDEWEB)

    Morris, R.C.

    1992-01-01

    The author developed a model of [sup 222]Rn transport through soils and into experimental basements. The model was based on current theories and data from the Radon Project experimental basements at Colorado State University were used to calibrate it to that site. Uncertainty analysis of the model showed that model predictions of indoor [sup 222]Rn concentrations come from a distribution having a CV of no greater than 0.25. Sensitivity analysis of the model indicated that the dry bulk density, the [sup 226]Ra concentration of the soil and the effective permeability of the basement wall are, perhaps, the most important parameters in the model for determining a set of output. The effective diffusion coefficient of the basement wall is also important. The model was perturbed in manners consistent with three expected mechanisms, and their combination, by which vegetation might influence indoor [sup 222]Rn concentration. The presence of vegetation, acting by any mechanism, reduces indoor [sup 222]Rn concentration. Vegetation also influences the pattern in time of indoor [sup 222]Rn. In general, indoor [sup 222]Rn concentrations tend to follow surface soil moisture, with variability added to the trend by the wind speed. This pattern was modified, however, by vegetation action. Based on these results, I developed a set of predictions which can be tested by experiment at the Radon Project experimental basements to determine which of the hypothesized mechanisms of vegetation action is supported.

  5. SUPPLEMENTARY COMPARISON: COOMET.RI(II)-S1.Rn-222 (169/UA/98): Rn-222 volume activity comparison

    Science.gov (United States)

    Skliarov, V.; Röttger, A.; Honig, A.; Korostin, S.; Kuznetsov, S.; Lapenas, A.; Milevsky, V.; Ivaniukovich, A.; Kharitonov, I.; Sepman, S.

    2009-01-01

    According to a first program, a supplementary comparison of Rn-222 volume activity was drawn up as a bilateral supplementary comparison between NSC 'Institute of Metrology', Ukraine, and VNIIFTRI, Russia. It took place in March 2005. In April 2005, at the 5th meeting of COOMET held in Braunschweig (Germany), representatives of these institutes exchanged data which showed the comparability of the national standards of Ukraine and Russia for the check points. During the discussion of the procedure some other institutes decided to join the comparison program, which was extended to BelGIM (Belarus), PTB (Germany), VNIIM (Russia) and RMTC (Latvia). The national standards of volume activity of radon-222 were thus calibrated using one standard radon radiometer as the transfer standard. Results are shown in the Final Report of the comparison. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by COOMET, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).

  6. Comparing NET and ERI standardized exam scores between baccalaureate graduates who pass or fail the NCLEX-RN.

    Science.gov (United States)

    Bondmass, Mary D; Moonie, Sheniz; Kowalski, Susan

    2008-01-01

    In the United States, nursing programs are commonly evaluated by their graduates success on the National Council Licensure Examination for Registered Nurses (NCLEX-RN). The purpose of this paper is to describe a change in NCLEX-RN success rates following the addition of standardized exams throughout our program's curriculum, and to compare these exam scores between graduates who pass NCLEX-RN and those who do not. Our results indicate an 8.5% change (p NCLEX-RN pass rate from our previous 5-year mean pass rate, and significant differences in standardized test scores for those who pass the NCLEX-RN compared to those who do not (p NCLEX-RN than not.

  7. A comparison of two nursing program exit exams that predict first-time NCLEX-RN outcome.

    Science.gov (United States)

    Brodersen, Lisa D; Mills, Andrew C

    2014-08-01

    This retrospective descriptive correlational study compared the predictive accuracy of the Health Education Systems, Inc, Exit Exam (Elsevier) and Assessment Technologies Institute's RN Comprehensive Predictor, both of which were administered to nursing students in an upper-division baccalaureate nursing program during their final semester of study. Using logistic regression analyses, it was determined that the two examinations were statistically significant but weak predictors of success on the RN licensure examination. The RN Comprehensive Predictor had a slightly better odds ratio; however, both examinations had similar sensitivity, specificity, and overall accuracy. Because the RN Comprehensive Predictor was included in the Assessment Technologies Institute's Comprehensive Assessment and Review Program already being used by the BSN program, based on the results of this study, the nursing faculty decided to use only the RN Comprehensive Predictor during its NCLEX-RN preparation course.

  8. QUALIDADE AMBIENTAL DO RESERVATÓRIO CAJÁ, TABOLEIRO GRANDE (RN

    Directory of Open Access Journals (Sweden)

    Francisco Ericardo do Nascimento

    2016-07-01

    Full Text Available O reservatório Cajá é o manancial responsável por abastecer a cidade de Taboleiro Grande mas, atualmente, sofre com alguns problemas relacionados ao uso e ocupação do entorno, além da diminuição do volume em função da baixa precipitação pluviométrica na região do Alto Oeste Potiguar. O objetivo deste trabalho foi realizar uma análise da qualidade ambiental do reservatório Cajá, localizado no município de Taboleiro Grande (RN. A metodologia de abordagem consistiu em leitura de parâmetros de qualidade de água com aparelho multiparâmetro, levantamento pontuais de impactos ambientais, e entrevistas com a população local sobre questões relacionadas ao uso e qualidade das águas do reservatório, tendo como principal foco a percepção ambiental dos munícipes. Os parâmetros utilizados para analisar a qualidade das águas foram: Temperatura, pH, Oxigênio Dissolvido e Condutividade Elétrica. Estabeleceram-se dois pontos no reservatório, onde as leituras foram realizadas em dois períodos sazonais, isto é, na estação seca e chuvosa. O resultado das análises mostrou que o OD e CE não apresentaram os índices estabelecidos pelo CONAMA 357/2005 para o consumo da água para o ser humano. Foram identificadas também algumas fontes que contribuem para a degradação da qualidade da água do manancial

  9. Certolizumab pegol does not bind the neonatal Fc receptor (FcRn): Consequences for FcRn-mediated in vitro transcytosis and ex vivo human placental transfer.

    Science.gov (United States)

    Porter, Charlene; Armstrong-Fisher, Sylvia; Kopotsha, Tim; Smith, Bryan; Baker, Terry; Kevorkian, Lara; Nesbitt, Andrew

    2016-08-01

    Antibodies to tumor necrosis factor (anti-TNF) are used to treat inflammatory diseases, which often affect women of childbearing age. The active transfer of these antibodies across the placenta by binding of the Fc-region to the neonatal Fc receptor (FcRn) may result in adverse fetal or neonatal effects. In contrast to other anti-TNFs, certolizumab pegol lacks an Fc-region. The objective of this study was to determine whether the structure of certolizumab pegol limits active placental transfer. Binding affinities of certolizumab pegol, infliximab, adalimumab and etanercept to human FcRn and FcRn-mediated transcytosis were determined using in vitro assays. Human placentas were perfused ex vivo to measure transfer of certolizumab pegol and positive control anti-D IgG from the maternal to fetal circulation. FcRn binding affinity (KD) was 132nM, 225nM and 1500nM for infliximab, adalimumab and etanercept, respectively. There was no measurable certolizumab pegol binding affinity, similar to that of the negative control. FcRn-mediated transcytosis across a cell layer (mean±SD; n=3) was 249.6±25.0 (infliximab), 159.0±20.2 (adalimumab) and 81.3±13.1ng/mL (etanercept). Certolizumab pegol transcytosis (3.2±3.4ng/mL) was less than the negative control antibody (5.9±4.6ng/mL). No measurable transfer of certolizumab pegol from the maternal to the fetal circulation was observed in 5 out of 6 placentas that demonstrated positive-control IgG transport in the ex vivo perfusion model. Together these results support the hypothesis that the unique structure of certolizumab pegol limits its transfer through the placenta to the fetus and may be responsible for previously reported differences in transfer of other anti-TNFs from mother to fetus.

  10. IL1RN and KRT13 Expression in Bladder Cancer: Association with Pathologic Characteristics and Smoking Status

    Directory of Open Access Journals (Sweden)

    Thomas S. Worst

    2014-01-01

    Full Text Available Purpose. To validate microarray data on cytokeratin 13 (KRT13 and interleukin-1 receptor antagonist (IL1RN expression in urothelial carcinoma of the urinary bladder (UCB and to correlate our findings with pathologic characteristics and tobacco smoking. Methods. UCB tissue samples (n=109 and control samples (n=14 were obtained from transurethral resection and radical cystectomy specimens. Immunohistochemical staining of KRT13 and IL1RN was performed and semiquantitative expression scores were assessed. Smoking status was evaluated using a standardized questionnaire. Expression scores were correlated with pathologic characteristics (tumor stage and grade and with smoking status. Results. Loss of KRT13 and IL1RN expression was observed in UCB tissue samples when compared to controls (P=0.007, P=0.008 in which KRT13 and IL1RN expression were high. IL1RN expression was significantly reduced in muscle-invasive tumors (P=0.003. In tissue samples of current smokers, a significant downregulation of IL1RN was found when compared to never smokers (P=0.013. Conclusion. Decreased expressions of KRT13 and IL1RN are common features of UCB and are associated with aggressive disease. Tobacco smoking may enhance the loss of IL1RN, indicating an overweight of proinflammatory mediators involved in UCB progression. Further validation of the influence of smoking on IL1RN expression is warranted.

  11. The air luminescence count for the rapid determination of {sup 222}Rn in a liquid scintillation spectrometer

    Energy Technology Data Exchange (ETDEWEB)

    Morita-Murase, Yuko; Murakami, Isao; Homma, Yoshio [Laboratory for Radiopharmaceutical Chemistry, Kyoritsu College of Pharmacy, Tokyo (Japan)

    2001-03-01

    A liquid scintillation spectrometer has been applied to the determination of the counting efficiency for the air luminescence produced by standardized {sup 222}Rn and its daughters. Based on the counting efficiency, known amounts of {sup 222}Rn can be prepared in 3.5 h. Moreover, the {sup 226}Ra source from which {sup 222}Rn is collected does not necessary have to be a standard one. In contrast, the conventional method for preparing known amounts of {sup 222}Rn usually requires a long waiting period (ca. 15-30 days). (author)

  12. Soil gas Rn monitoring at Chã das Caldeiras prior the 2014-15 Fogo eruption, Cape Verde

    Science.gov (United States)

    Padilla, Germán; Barrancos, José; Dionis, Samara; Fernandes, Paulo; Pérez, Nemesio M.; Sagiya, Takeshi; Padrón, Eleazar; Melián, Gladys V.; Hernández, Pedro A.; Silva, Sónia; Pereira, José Manuel; Rodríguez, Fátima; Asensio-Ramos, María; Calvo, David; Semedo, Helio

    2015-04-01

    Since 2007 the ITER-INVOLCAN/UNICV-OVCV/SNPC research team has implemented a geochemical program for the volcanic surveillance of Fogo volcano by means of applying different geochemical methods in a regularly basis (diffuse degassing surveys, fumarole gas sampling, etc.). This program was improved by setting up a geochemical permanent station (CHA01) to perform continuous measurements of soil gas radon (222Rn) and thoron (220Rn) activities at Chã das Caldeiras, more specific in Portela village, since April 20, 2013. Both gases are characterized to ascend towards the surface mainly through cracks or faults via diffusion and/or advection mechanisms dependent of both soil porosity and permeability, which in turn vary as a function of the stress/strain changes at depth. Measurements of 222Rn and 220Rn activities were performed by an alpha-spectrometer after pumping the soil gas from a thermally isolated PVC pipe inserted 1m in the ground. Even though during the study period the recorded data did not show high 222Rn activity values, a change in the temporal evolution of soil gas 222Rn activity was observed. During the first six months, from April to October, 2013, recorded time series of 222Rn and 220Rn activities showed normal background levels with values of 80.5 and 55.2 Bqm-3, respectively. However, from October, 2013, to February, 2014, 222Rn time series showed an increase trend reaching peak values of 396 Bqm-3 and having an average activity of 134 Bqm-3 until the removal of the station on November 25, 2014 due to the potential danger of being destroyed by the lava flows. The observed increase in the soil gas 222Rn activity from October 2013 to February 2014 occurs almost at the same time of slight observed changes in the vertical displacements detected by the geodetic network installed at the Fogo Island by the ITER-INVOLCAN/UNICV-OVCV/SNPC/Nagoya University research team. Since seismic data are not available, we cannot conclude if the observed changes in soil

  13. The NCLEX-RN experience: qualitative interviews with graduates of a baccalaureate nursing program.

    Science.gov (United States)

    Eddy, Linda L; Epeneter, Beverly J

    2002-06-01

    It is important for nursing faculty to pay attention to individual as well as institutional results on the National Council Licensure Examination for RNs (NCLEX-RN). This study was designed to identify themes to help faculty understand the NCLEX-RN experience from students' perspectives and help future students pass the examination at the first sitting. A sample of 1998 graduates of a baccalaureate program was selected, which included 10 students who were successful and 9 who were unsuccessful on the first testing attempt. Participants were interviewed about the testing experience and the relationship between nursing education and the NCLEX-RN. Findings indicate that participants who passed on the first attempt accepted responsibility for learning, were proactive in test preparation, took the examination when they felt ready, and used stress management techniques to cope with this challenge. The unsuccessful participants tended to perceive their lack of success on the NCLEX-RN was the responsibility of others, seemed less able to manage stress, and took the examination when they did not feel ready. Both successful and unsuccessful participants felt unprepared to answer NCLEX-RN-type questions and believed nothing had prepared them for this experience.

  14. Continuing Education for Mentors and a Mentoring Program for RN-to-BSN Students.

    Science.gov (United States)

    Cheek, Rita E; Walsh Dotson, Jo Ann; Ogilvie, LeAnn A

    2016-06-01

    Mentoring programs have been used effectively with graduate and undergraduate nursing students and newly licensed nurses. There are few publications about mentoring for the RN enrolled in a bachelor of science in nursing (RN-to-BSN) program. To address low graduation rates in the public RN-to-BSN nursing programs, the Montana Center to Advance Health Through Nursing designed a mentoring program to help these nurses achieve their BSN. This voluntary program was initiated at an RN-to-BSN program in a 4-year college with six RN students who were paired with a mentor. An interactive, continuing education workshop on mentoring also was developed to prepare experienced nurses for their role as a mentor. This workshop was held nine times across Montana, with a total of 156 attendees. Workshop evaluations were consistently positive. Participants identified time and personality issues as barriers to successful mentoring and recommended expansion of the workshop to a distance-learning format so more nurses could attend. J Contin Educ Nurs. 2016;47(6):272-277.

  15. Design, calibration, and operation of 220Rn stack effluent monitoring systems at Argonne National Laboratory.

    Science.gov (United States)

    Munyon, W J; Kretz, N D; Marchetti, F P

    1994-09-01

    A group of stack effluent monitoring systems have been developed to monitor discharges of 220Rn from a hot cell facility at Argonne National Laboratory. The stack monitors use flow-through scintillation cells and are completely microprocessor-based systems. A method for calibrating the stack monitors in the laboratory and in the field is described. A nominal calibration factor for the stack monitoring systems in use is 15.0 cts min-1 per kBq m-3 (0.56 cts min-1 per pCi L-1) +/- 26% at the 95% confidence level. The plate-out fraction of decay products in the stack monitor scintillation cells, without any pre-filtering, was found to be nominally 25% under normal operating conditions. When the sample was pre-filtered upstream of the scintillation cell, the observed cell plate-out fraction ranged from 16-22%, depending on the specific sampling conditions. The instantaneous 220Rn stack concentration can be underestimated or overestimated when the steady state condition established between 220Rn and its decay products in the scintillation cell is disrupted by sudden changes in the monitored 220Rn concentration. For long-term measurements, however, the time-averaged response of the monitor represents the steady state condition and leads to a reasonable estimate of the average 220Rn concentration during the monitoring period.

  16. Development of an integrated sampler based on direct {sup 222}Rn/{sup 220}Rn progeny sensors in flow-mode for estimating unattached/attached progeny concentration

    Energy Technology Data Exchange (ETDEWEB)

    Mishra, Rosaline, E-mail: rosaline@barc.gov.i [Radiological Physics and Advisory Division, Health, Safety and Environment Group, Bhabha Atomic Research Centre, Mumbai 400 085 (India); Sapra, B.K.; Mayya, Y.S. [Radiological Physics and Advisory Division, Health, Safety and Environment Group, Bhabha Atomic Research Centre, Mumbai 400 085 (India)

    2009-11-15

    A flow-mode integrated sampler consisting of a wire-mesh and filter-paper array along with passive solid state nuclear track detectors has been developed for estimating unattached and attached fraction of {sup 222}Rn/{sup 220}Rn progeny concentration. The essential element of this sampler is the direct {sup 222}Rn/{sup 220}Rn progeny sensor (DRPS/DTPS), which is an absorber-mounted-LR115 type nuclear track detector that selectively registers the alpha particles emitted from the progeny deposited on its surface. During sampling at a specified flow-rate, the unattached progeny is captured on the wire-mesh; while the attached progeny gets transmitted and is captured on the filter-paper. The alpha particles emitted by the deposited progeny atoms are registered on the sensors placed at a specified distance facing the wire-mesh and the filter-paper, respectively. The various steps involved in the development of this flow-mode direct progeny sampler such as the optimization of the sampling rate and the distance between the sensor and the deposition substrate are discussed. The sensitivity factor of the DTPS-loaded sampler for {sup 220}Rn progeny deposited on the wire-mesh and filter-paper is found to be 23.77 +- 0.64 (track cm{sup -2} h{sup -1}) (Bq m{sup -3}){sup -1} and 22.30 +- 0.18 (track cm{sup -2} h{sup -1}) (Bq m{sup -3}){sup -1}, respectively; while that of DRPS-loaded sampler for {sup 222}Rn progeny deposition, is 3.03 +- 0.14 (track cm{sup -2} h{sup -1}) (Bq m{sup -3}){sup -1} and 2.08 +- 0.07 (track cm{sup -2} h{sup -1}) (Bq m{sup -3}){sup -1}, respectively. The highlight of this flow-mode sampler is its high sensitivity and that it utilizes the passive technique for estimating the unattached and attached progeny concentration, thus doing away with the alpha counting procedures.

  17. A contribution to the study of the behaviour of {sup 220}Rn, {sup 222}Rn and their daughters in the atmosphere; Contribution a l'etude du comportement du radon-220, du radon-222 et de leurs descendants dans l'atmosphere

    Energy Technology Data Exchange (ETDEWEB)

    Kataoka, T.; Yunoki, E.; Michihiro, K.; Sugiyama, H.; Shimizu, M.; Mori, T. [Okayama Prefectural Institute for Environmental Science and Public Health, Uchio, Okayama (Japan); Tsukamoto, O.; Sahashi, K. [Okayama Univ. (Japan). Faculty of Science; Maitani, T. [Okayama Univ. (Japan). Inst. for Bioresources

    1999-06-01

    We simultaneously measured the concentrations of {sup 212}Pb (a {sup 220}Rn daughter) and short-lived {sup 222}Rn daughters, and some meteorological elements at three sites 2-3 km apart in Kamisaibara Village (Okayama Prefecture, Japan). The resulting data shows that variations of the concentrations of {sup 212}Pb and {sup 222}Rn daughters and of the ratio Pb/Rn-daughters at these three sites are correlated, but that their levels are considerably influenced by emanations of {sup 220}Rn and {sup 222}Rn from the soil near the observation sites. The results of further treatment make it clear that the addition of Pb/Rn (the ratio of the concentrations of {sup 212}Pb and {sup 222}Rn) or of Pb/Rn-daughters as an indicator to one of the concentrations of {sup 212}Pb, {sup 222}Rn and {sup 222}Rn daughters enables us to get information about the state of the lower atmosphere. Considering the above, the ratio Pb/Rn or Pb/Rn-daughters will be useful as a tracer for elucidation of the behaviour of air pollutants in urban and industrial areas, as well as the concentrations of {sup 212}Pb, {sup 222}Rn and {sup 222}Rn daughters. (author)

  18. Strategies for lowering attrition rates and raising NCLEX-RN pass rates.

    Science.gov (United States)

    Higgins, Bonnie

    2005-12-01

    This study was designed to determine strategies to raise the NCLEX-RN pass rate and lower the attrition rate in a community college nursing program. Ex-post facto data were collected from 213 former nursing student records. Qualitative data were collected from 10 full-time faculty, 30 new graduates, and 45 directors of associate degree nursing programs in Texas. The findings linked the academic variables of two biology courses and three components of the preadmission test to completion of the nursing program. A relationship was found between one biology course, the science component of the preadmission test, the HESI Exit Examination score, and the nursing skills course to passing the NCLEX-RN. Qualitative data indicated preadmission requirements, campus counselors, remediation, faculty, test-item writing, and teaching method were instrumental in completion of the program and passing the NCLEX-RN.

  19. Facilitating program and NCLEX-RN success in a generic BSN program.

    Science.gov (United States)

    Uyehara, Janet; Magnussen, Lois; Itano, Joanne; Zhang, Shuqiang

    2007-01-01

    This article focuses on a study of predictors of program and NCLEX-RN success and withdrawal in a generic BSN program at the University of Hawaii at Manoa School of Nursing. Data were collected over a 5-year period after a new curriculum was implemented. High program (95.09%) and NCLEX-RN (97.25%) success were achieved. Of the 11 who did not meet the definition of program success, 100% completed the program by another two to three semesters and 90.91% passed the NCLEX-RN as first-time takers. The program withdrawal rate was 20%. It is very important to use measures to promote program completion and NCLEX passing for both the normally progressing and at-risk student to meet the demands of the nursing shortage.

  20. A systematic review of the effectiveness of remediation interventions to improve NCLEX-RN pass rates.

    Science.gov (United States)

    Pennington, Tracy D; Spurlock, Darrell

    2010-09-01

    First-time NCLEX-RN pass rates are important measures of educational quality in prelicensure nursing education programs. Licensure pass rate problems has been the subject of countless nursing education articles and studies over the past several decades. To improve NCLEX-RN pass rates, remediation is often prescribed for students who have academic performance deficits. This article presents a systematic review of studies on remediation interventions and their effects on NCLEX-RN pass rates. Most studies of remediation and its effects on licensure pass rates are descriptive program evaluation reports. The overall quality of studies included in this review is uneven but generally low. Nursing education researchers should focus on conducting higher quality intervention studies in which the fidelity of remediation interventions can be examined. Viewing licensure pass rates from a process improvement perspective and accounting for pass rate variations could also change the nature of scholarship on this topic.

  1. Impact of a standardized test package on exit examination scores and NCLEX-RN outcomes.

    Science.gov (United States)

    Homard, Catherine M

    2013-03-01

    The purpose of this ex post facto correlational study was to compare exit examination scores and NCLEX-RN(®) pass rates of baccalaureate nursing students who differed in level of participation in a standardized test package. Three cohort groups emerged as a standardized test package was introduced: (a) students who did not participate in a standardized test package; (b) students with two semesters of a standardized test package; and (c) students with four semesters of a standardized test package. Benner's novice-to-expert theory framed the study in the belief that students best acquire knowledge and skills through practice and reflection. Students participating in four semesters of a standardized test package demonstrated higher exit examination scores and NCLEX-RN pass rates compared with students who did not participate in this package. This study's results could inform nurse educators about strategies to facilitate nursing student success on exit examinations and the NCLEX-RN.

  2. A study of the usefulness of the HESI Exit Exam in predicting NCLEX-RN failure.

    Science.gov (United States)

    Spurlock, Darrell R; Hunt, Linda A

    2008-04-01

    Schools of nursing across the country are implementing progression policies that prohibit students from graduating or from taking the nursing licensure examination, sometimes based solely on a single predictive test score. In addition, little empirical evidence exists that supports progression policies as effective in increasing a school's NCLEX-RN pass rates. This article reports on a study conducted when one school did not achieve the results they expected after implementing a progression policy. With use of logistic regression, diagnostic indexes, and other methods, reasons for the disparity between expected and observed NCLEX-RN pass rates were examined. Results revealed that the Health Education Systems, Inc. (HESI) Exit Exam was not able to accurately predict NCLEX-RN outcomes for graduates and, further, that progression policies that allow retest after retest so as to achieve a minimum score on the HESI Exit Exam are not supported empirically. Conclusions and suggestions for schools using or considering progression policies are provided.

  3. A Matérn model of the spatial covariance structure of point rain rates

    KAUST Repository

    Sun, Ying

    2014-07-15

    It is challenging to model a precipitation field due to its intermittent and highly scale-dependent nature. Many models of point rain rates or areal rainfall observations have been proposed and studied for different time scales. Among them, the spectral model based on a stochastic dynamical equation for the instantaneous point rain rate field is attractive, since it naturally leads to a consistent space–time model. In this paper, we note that the spatial covariance structure of the spectral model is equivalent to the well-known Matérn covariance model. Using high-quality rain gauge data, we estimate the parameters of the Matérn model for different time scales and demonstrate that the Matérn model is superior to an exponential model, particularly at short time scales.

  4. Rn-222 exhalation rates from phosphogypsum embankments subjected to fixed external activity

    Energy Technology Data Exchange (ETDEWEB)

    Rabi, Jose A. [Pontificia Univ. Catolica de Minas Gerais, MG (Brazil)]. E-mail: jrabi@pucpcaldas.br; Silva, Nivaldo C. da [Comissao Nacional de Energia Nuclear (CNEN), Pocos de Caldas, MG (Brazil). Lab. de Pocos de Caldas]. E-mail: ncsilva@cnen.gov.br

    2003-07-01

    Half of the average total dose received by humans worldwide corresponds to the annual effective dose due to {sup 222} Rn. This radionuclide is found in phosphogypsum, which is a by-product from phosphate fertilizer industries. Although there is a global interest in finding large-scale usage of this material, environmental issues related to its disposal and management still remain, as far as the {sup 222} Rn exhalation rate is concerned. Radon transport mechanism through phosphogypsum-based embankments is a rather complex process and depends upon many physical factors as porosity, moisture, temperature and emanation power. In this paper, an existing mathematical model was applied to simulate {sup 222} Rn transport in a one-dimensional porous media domain and under a steady-stage regime. As a first approach, natural convection effects were neglected and boundary conditions included no-flux at the base of the embankment and constant concentration activity at its top. (author)

  5. Molecular docking analysis of RN18 and VEC5 in A3G-Vif inhibition.

    Science.gov (United States)

    Sinha, Chanda; Nischal, Anuradha; Pant, Kamlesh K; Bandaru, Srinivas; Nayarisseri, Anuraj; Khattri, Sanjay

    2014-01-01

    The HIV-1 protein Vif is essential for in vivo viral replication that targets the human DNA-editing enzyme, APOBEC3G (A3G), which inhibits replication of retroviruses. The Vif-A3G interactions are believed to be important targets for antiviral drug development. Since the interactions of A3G and Vif evade the ubiquitination pathways in human host, the viral replication precedes which otherwise spreads infection. In this study, two potent Vif inhibitors RN 18 and VEC5 have been evaluated for their inhibitory potential employing ligand receptor and protein-protein interactions studies. VEC 5 showed better interaction with Vif than RN18. Predicted data show that VEC5 bound Vif and RN18 bound Vif showed diminished interaction to A3G compared to inhibitor unbound Vif. However, this should be further validated using in vitro studies.

  6. Measurements of octupole collectivity in Rn and Ra nuclei using Coulomb excitation

    CERN Multimedia

    We propose to exploit the unique capability of HIE-ISOLDE to provide post-accelerated $^{221,222}$Rn and $^{222,226,228}$Ra ion beams for the study of octupole collectivity in these nuclei. We will measure E3 transition moments in $^{222}$Rn and $^{222,226,228}$Ra in order to fully map out the variation in E3 strength in the octupole mass region with Z$\\thicksim$88 and N$\\thicksim$134. This will validate model calculations that predict different behaviour as a function of N. We will also locate the position of the parity doublet partner of the ground state in $^{221}$Rn, in order to test the suitability of odd-A radon isotopes for EDM searches.

  7. A novel application for 222Rn emanation standards: radon-cryptophane host chemistry.

    Science.gov (United States)

    Laureano-Perez, L; Collé, R; Jacobson, D R; Fitzgerald, R; Khan, N S; Dmochowski, I J

    2012-09-01

    In collaboration with the University of Pennsylvania, a (222)Rn emanation source was used for the determination of the binding affinity of radon to a cryptophane molecular host. This source was similar to a (222)Rn emanation standard that was developed and disseminated by the National Institute of Standards and Technology (NIST). The novel experimental design involved performing the reactions at femtomole levels, developing exacting gravimetric sampling methods and making precise (222)Rn assays by liquid scintillation counting. A cryptophane-radon association constant was determined, K(A)=(49,000±12,000) L mol(-1) at 293 K, which was the first measurement of radon binding to a molecular host.

  8. Factors Associated With First-Time NCLEX-RN Success: A Descriptive Research Study.

    Science.gov (United States)

    Johnson, Tanya; Sanderson, Bonnie; Wang, Chih-Hsuan; Parker, Francine

    2017-09-01

    The purpose of this study was to identify variables associated with scores achieved on the Health Education Systems, Inc. (HESI) exit examination and successful first-time NCLEX-RN(®) pass rates. A retrospective descriptive study examined the administrative data of 211 baccalaureate nursing students. Students who completed the program in sequence and scored higher in certain HESI course examinations were more likely to have a better performance on the HESI exit examination. The higher the scores students achieved on the HESI exit examination, the more likely they were to pass the NCLEX-RN on their first attempt. These findings add to the growing body of literature seeking to identify variables associated with success in first-time NCLEX-RN success. Further research is needed to identify strategies that can be implemented to ensure timely progression, program completion, and licensure examination success. [J Nurs Educ. 2017;56(9):542-545.]. Copyright 2017, SLACK Incorporated.

  9. Indsats for forældre til børn med ADHD

    DEFF Research Database (Denmark)

    Neubert, Katja

    2012-01-01

    Et nyt review, udarbejdet af forskergruppen omkring Morris Zwi, undersøger om interventionsprogrammer til forældre til børn med ADHD er effektive, når det gælder reducering af børnenes ADHD-relaterede adfærd og associerede problemer som eksempelvis indlæringsproblemer. Reviewet peger på, at en...... indsats til forældre til børn med ADHD kan have en gavnlig effekt på børnenes adfærd. Interventionen kan også være med til at sænke stressniveauet hos forældre til disse børn, og forbedre forældrenes selvtillid....

  10. Academic predictors of success on the NCLEX-RN examination for associate degree nursing students.

    Science.gov (United States)

    Lengacher, C A; Keller, R

    1990-04-01

    The purpose of this study is to examine the relationship between selected admission variables (entrance GPA, ACT subtests scores in English and mathematics, composite ACT scores), age, perception of role strain, achievement in clinical and nursing courses, achievement on NLN examinations, exit GPA, and performance on NCLEX-RN examination. Data were attained from records of 146 associate degree graduates who were admitted to a specially-designed associate degree program in nursing and on those graduates who wrote the NCLEX-RN examination in July 1987 and July 1988. Pearson product moment correlations and stepwise multiple regression analyses were used to identify the relationship between the predictor variables (admission criteria, age, perception of role strain, achievement in clinical and nursing courses), achievement on NLN examinations, exit GPA, and the criterion variable (scores on the NCLEX-RN examination). The best predictor for performance on the NCLEX-RN of the selected admission variables, age, perception of role strain, and exit GPA, were exit GPA (R = .71) and ACT composite scores (R = .75). The ACT math, ACT English scores, entrance GPA, age, and perception of role strain, had no predictive value. The best predictor for performance on the NCLEX-RN of nursing theory course and clinical course grades were the two theory courses in the second year of the program NUR 2712 (R = .77) and NUR 2713 (R = .79). NUR 2711 and 2711L, NUR 2712L, 2713L, and 2813 had no predictive value for success on the NCLEX-RN.(ABSTRACT TRUNCATED AT 250 WORDS)

  11. Utility of 222Rn as a passive tracer of subglacial distributed system drainage

    Science.gov (United States)

    Linhoff, Benjamin S.; Charette, Matthew A.; Nienow, Peter W.; Wadham, Jemma L.; Tedstone, Andrew J.; Cowton, Thomas

    2017-03-01

    Water flow beneath the Greenland Ice Sheet (GrIS) has been shown to include slow-inefficient (distributed) and fast-efficient (channelized) drainage systems, in response to meltwater delivery to the bed via both moulins and surface lake drainage. This partitioning between channelized and distributed drainage systems is difficult to quantify yet it plays an important role in bulk meltwater chemistry and glacial velocity, and thus subglacial erosion. Radon-222, which is continuously produced via the decay of 226Ra, accumulates in meltwater that has interacted with rock and sediment. Hence, elevated concentrations of 222Rn should be indicative of meltwater that has flowed through a distributed drainage system network. In the spring and summer of 2011 and 2012, we made hourly 222Rn measurements in the proglacial river of a large outlet glacier of the GrIS (Leverett Glacier, SW Greenland). Radon-222 activities were highest in the early melt season (10-15 dpm L-1), decreasing by a factor of 2-5 (3-5 dpm L-1) following the onset of widespread surface melt. Using a 222Rn mass balance model, we estimate that, on average, greater than 90% of the river 222Rn was sourced from distributed system meltwater. The distributed system 222Rn flux varied on diurnal, weekly, and seasonal time scales with highest fluxes generally occurring on the falling limb of the hydrograph and during expansion of the channelized drainage system. Using laboratory based estimates of distributed system 222Rn, the distributed system water flux generally ranged between 1-5% of the total proglacial river discharge for both seasons. This study provides a promising new method for hydrograph separation in glacial watersheds and for estimating the timing and magnitude of distributed system fluxes expelled at ice sheet margins.

  12. Population-focused nursing: advocacy for vulnerable populations in an RN-BSN program.

    Science.gov (United States)

    Jones, Melissa; Smith, Paul

    2014-01-01

    The purpose of this article is to describe an innovative learning activity for online RN-BSN students designed to foster advocacy for vulnerable populations. The Vulnerable Population Advocacy Assignment, included as a component of the online Population-Focused Nursing class, provides students with the opportunity to identify and develop an awareness of issues impacting vulnerable populations and to advocate for policy changes that will influence the health of individuals, families, and populations. RN-BSN students build on previous knowledge and skills in professional communication and advocacy as they develop a policy statement designed to address health disparities impacting local, national, and global populations.

  13. Cape Point GAW Station Rn-222 detector: factors affecting sensitivity and accuracy

    CSIR Research Space (South Africa)

    Brunke, EG

    2002-05-01

    Full Text Available : development and deployment in ACE-1. Journal of Geophysical Research 103 (D13), 6743?16751. Whittlestone, S., Zahorowski, W., Wasiolek, P., 1994. High sensitivity two filter radon/thoron detectors deploy- ing a wire or nylon screen as the second filter. Report... such as scintillator foil, wire screen and photomultiplier can be replaced. Air enriched in 222Rn causes a build up of its long-lived progeny, 210Pb. After 21 years, the background count from 210Pb will equal half the average 222Rn concentration. It is therefore...

  14. Predictors of NCLEX-RN success across 3 prelicensure program types.

    Science.gov (United States)

    Landry, Lynette G; Davis, Harvey; Alameida, Marshall D; Prive, Alice; Renwanz-Boyle, Andrea

    2010-01-01

    Nursing faculty are concerned about the ability of recent graduates to successfully pass NCLEX-RN on their first-attempt. To facilitate student first-time success on the examination, nurse educators need to understand what student characteristics are predictive of success. The purpose of this study was to explore student characteristics across 3 different programs types (university-based BSN, master's entry, and satellite BSN) and in each of the 3 program types to identify predicators of first-time NCLEX-RN success.

  15. Implementing a writing course in an online RN-BSN program.

    Science.gov (United States)

    Stevens, Carol J; D'Angelo, Barbara; Rennell, Nathalie; Muzyka, Diann; Pannabecker, Virginia; Maid, Barry

    2014-01-01

    Scholarly writing is an essential skill for nurses to communicate new research and evidence. Written communication directly relates to patient safety and quality of care. However, few online RN-BSN programs integrate writing instruction into their curricula. Nurses traditionally learn how to write from instructor feedback and often not until midway into their baccalaureate education. Innovative strategies are needed to help nurses apply critical thinking skills to writing. The authors discuss a collaborative project between nursing faculty and technical communication faculty to develop and implement a writing course that is 1 of the 1st courses the students take in the online RN-BSN program.

  16. Environmental {sup 222}Rn as a background source in the solar neutrino experiment GALLEX

    Energy Technology Data Exchange (ETDEWEB)

    Wojcik, M. [Uniwersytet Jagiellonski, Cracow (Poland). Inst. Fizyki; BOREXINO

    1996-12-31

    The radiochemical neutrino experiment GALLEX is described. Its aim is to measure the flux of low energy solar neutrinos. In this experiment it is essential to suppress strongly the background of environmental origin, like charged cosmic rays, neutrons and gamma rays. In low-level radioactivity measurements performed in deep underground laboratory where flux of charged comic rays is strongly reduced, radon (Rn) exhaled from rock or concrete walls forms a most important strong, time-dependent background component. In this work the impact of Rn on the GALLEX experiment has been discussed and attempts to recognize and minimize its influence on the counter background were described. 63 refs, 22 figs, 11 tabs.

  17. Arteterapia con personas con discapacidad intelectual

    OpenAIRE

    Lorenzo Pipkau, Milena

    2015-01-01

    Este proyecto pretende hacer una aproximaci??n al mundo del Arte Terapia y los beneficios que esta disciplina puede aportar a las personas con discapacidad intelectual. La idea surge de la experiencia previa de la autora en este ??mbito y con este colectivo. A trav??s de la documentaci??n bibliogr??fica se busca ampliar el conocimiento en cuanto al concepto de arteterapia y sus antecedentes, con la finalidad de elaborar una propuesta pr??ctica que se basar?? en el dise??o de un taller de arte...

  18. Update of the BIPM.RI(II)-K1.Rn-222 comparison of activity measurements for the radionuclide 222Rn to include the LNE-LNHB, France

    Science.gov (United States)

    Michotte, C.; Ratel, G.; Cassette, P.

    2012-01-01

    In 2007, the Laboratoire national de métrologie et d'essais-Laboratoire national Henri Becquerel (LNE-LNHB), France submitted a sample of known activity of 222Rn to the International Reference System (SIR) for comparison. The value of the activity submitted was about 90 kBq. This key comparison result joins that of Switzerland and Germany in the key comparison database that now contains three results, identifier BIPM.RI(II)-K1.Rn-222. Consequently, the KCRV has been updated and the degrees of equivalence with the KCRV have been evaluated. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCRI Section II, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).

  19. TGEV infection up-regulates FcRn expression via activation of NF-κB signaling.

    Science.gov (United States)

    Guo, Jinyue; Li, Fei; Qian, Shaoju; Bi, Dingren; He, Qigai; Jin, Hui; Luo, Rui; Li, Shaowen; Meng, Xianrong; Li, Zili

    2016-08-24

    It has been well characterized that the neonatal Fc receptor (FcRn) transports maternal IgG to a fetus or newborn and protects IgG from degradation. We previously reported that FcRn is expressed in a model of normal porcine intestinal epithelial cells (IPEC-J2). Transmissible gastroenteritis is an acute enteric disease of swine that is caused by transmissible gastroenteritis virus (TGEV). How porcine FcRn (pFcRn) expression is regulated by pathogenic infection remains unknown. Our research shows that IPEC-J2 cells infected with TGEV had up-regulated pFcRn expression. In addition, the NF-κB signaling pathway was activated in IPEC-J2 cells by TGEV infection. Furthermore, treatment of TGEV-infected IPEC-J2 cells with the NF-κB-specific inhibitor BAY 11-7082 resulted in down-regulation of pFcRn expression. Transient transfection of pFcRn promoter luciferase report plasmids with overexpression of NF-κB p65 transcription factor enhanced the activation of the luciferase report plasmids. We identified four NF-κB transcription factor binding sites in the promoter region of this gene using luciferase reporter system, chromatin immunoprecipitation, electromobility shift assay, and supershift analysis. Together, the data provide the first evidence that TGEV infection up-regulates pFcRn expression via activation of NF-κB signaling.

  20. Determination of natural radioactivity, 222Rn and 220Rn exhalation rates and radiation hazards of fly ash and fly ash brick used in Baotou, China

    Directory of Open Access Journals (Sweden)

    Li Yuxin

    2016-01-01

    Full Text Available Natural radioactivity levels, 222Rn and 220Rn exhalation rates and radiation hazards of fly ash and fly ash brick used in Baotou, China were determined. The activity concentrations of 226Ra, 232Th, and 40K in fly ash samples ranged from 38.81 to 93.73, 40.34 to 135.17, and 66.92 to 290.86 Bq/kg with an average of 76.52, 109.95, and 170.72 Bq/kg, respectively; while in fly ash brick samples, these radionuclides ranged from 42.43 to 71.60, 76.65 to 208.37, and 94.32 to 489.42 Bq/kg with an average of 53.83, 101.93, and 266.48 Bq/kg, respectively. The exhalation rates of 222Rn and 220Rn in all determined samples were in the range of 1.13-20.50 and 15.60-113.00 mBq/m2s, respectively. The calculated results of the radium equivalent activity, external hazard index, internal hazard index, indoor annual effective dose and outdoor annual effective dose indicated that fly ashes and fly ash bricks collected from some brick factories of Baotou would pose excessive radiation risks to inhabitants and that they are not suitable for use in building construction. The natural radioactivity level of fly ash and fly ash brick needs to be constantly monitored considering the radiation safety of the local residents.

  1. Sünteetiline lähenemine on edu pant / Tamara Luuk, Olga Pärn, Priit Pärn ; intervjueerinud Reet Varblane

    Index Scriptorium Estoniae

    Luuk, Tamara, 1952-

    2011-01-01

    Brügges kuni jaanuari lõpuni 2011 eksponeeritud belgia kunstniku Luc Tuymansi kureeritud näitusest "Madalaima tasandi reaalsus. Visioon Kesk-Euroopast" ("The Reality of the Lowest Rank. A Vision of Central Europe"). Osalema oli kutsutud 43 kunstnikku üle maailma. Priit Pärn Eestist esines söejoonistuste ja filmilõikudega näitusel ning eraldi filmiprogrammiga

  2. Generalización del teorema de transporte para un espacio vectorial Rn- derivación de la ecuación de balance de población para una columna de burbujeo

    OpenAIRE

    J. Ramírez-Muñoz; J. Hernández-Aguilar; A. Soria

    2005-01-01

    El teorema de transporte es una herramienta que permite derivar ecuaciones de balance en mecánica del continuo y ecuaciones de balance de población (EBP) en donde la población de partículas se encuentra distribuida de acuerdo a un conjunto de variables que definen el estado del sistema. En este trabajo generalizamos el teorema de transporte tridimensional (Truesdell y Toupin, 1960) para un espacio Rn y se particularizó para R7. Se presenta con detalle la metodología propuesta y se da una inte...

  3. Anagramme und andere Sprachspiele – zum Werk von Unica Zürn Anagrams and Other Language Games—On the Work of Unica Zürn

    Directory of Open Access Journals (Sweden)

    Agnieszka Vojta

    2005-03-01

    Full Text Available Unica Zürn (geb. 1916, 1970 Selbstmord in Paris wurde in der Forschung kaum als eigenständige Künstlerin rezipiert. Sie wird als die Lebensgefährtin von Hans Bellmer angesehen. In diesem Kontext fungiert sie als seine Muse, als die lebendige Verkörperung seiner Puppenmodelle. Helga Lutz plädiert in ihrer Dissertation für eine Auseinandersetzung mit den Arbeiten von Unica Zürn, „losgelöst aus dem Koordinatensystem des Biographischen und der Prämisse des Wahnsinns“. (S. 169Unica Zürn (born in 1916; suicide in Paris in 1970 has rarely been received in scholarship as an independent artist. She is seen as Hans Bellmer’s companion. She functions as a muse in this context, as a living embodiment of his dolls. In her dissertation, Helga Lutz pleads for an examination of Utica Zorn’s work, “removed from the coordinate plane of the biography and the premises of insanity” (169.

  4. Study of the Alpha-Decay Chain for7753 194Rn with Relativistic Mean-Field Theory

    Institute of Scientific and Technical Information of China (English)

    SHENG Zong-Qiang; GUO Jian-You

    2008-01-01

    The structures of the nuclei on the alpha-decay chain of 194Rn are investigated in the deformed relativistic mean-field theory with the effective interaction TMA. We put an emphasis on the ground state properties of 194Rn. The calculated alpha-decay energies and lifetimes are both very close to the experimental data for 186pb and 190po. For 194 Rn, the deviations are a little large on both the alpha-decay energy and the lifetime. We also calculate the alpha-decay energies for the isotopes 192~208Rn. The tendency for the change of the alpha-decay energies with neutron number is correctly reproduced in the relativistic mean-field theory (RMF). In general, the RMF theory can give a good description of the alpha decay chain of 194Rn.

  5. Calibration of the KRISS reference ionization chamber for certification of ²²²Rn gaseous sources.

    Science.gov (United States)

    Lee, J M; Lee, K B; Lee, S H; Oh, P J; Park, T S; Kim, B C; Lee, M S

    2013-11-01

    A primary measurement system for gaseous (222)Rn based on the defined solid angle counting method has recently been constructed at KRISS and the reference ionization chamber used to measure the activities of gamma-emitting single radionuclides was adopted as a secondary standard for gaseous (222)Rn. A 20 mL flame-sealed glass ampoule source from the primary measurement system was used to calibrate the ionization chamber for (222)Rn. The (222)Rn efficiency of the ionization chamber was compared with that calculated by using a photon energy-dependent efficiency curve and that measured by using a standard (226)Ra solution. From the comparisons we draw the conclusion that the reference ionization chamber for gamma-emitting radionuclides can be a suitable secondary measurement system for gaseous (222)Rn sources.

  6. A process-based 222Rn flux map for Europe and its comparison to long-term observations

    Directory of Open Access Journals (Sweden)

    U. Karstens

    2015-06-01

    Full Text Available Detailed 222Rn flux maps are an essential prerequisite for the use of radon in atmospheric transport studies. Here we present a high-resolution222Rn flux map for Europe, based on a parameterization of 222Rn production and transport in the soil. The 222Rn exhalation rate was parameterized based on soil properties, uranium content, and modelled soil moisture from two different land-surface reanalysis data sets. Spatial variations in exhalation rates are primarily determined by the uranium content of the soil, but also influenced by local water table depth and soil texture. Temporal variations are related to soil moisture variations as the molecular diffusion in the unsaturated soil zone depends on available air-filled pore space. The implemented diffusion parameterization was tested against campaign-based 222Rn profile measurements. Monthly 222Rn exhalation rates from European soils were calculated with a nominal spatial resolution of 0.083° × 0.083° and compared to long-term direct measurements of 222Rn exhalation rates in different areas of Europe. The two realizations of the 222Rn flux map, based on the different soil moisture data sets, both realistically reproduce the observed seasonality in the fluxes but yield considerable differences for absolute flux values. The average 222Rn flux from soils in Europe is estimated to be 10 or 15 mBq m-2 s-1, depending on the soil moisture data set, and the seasonal variations in the two realisations range from 7.1 mBq m-2 s-1 in February to 13.9 mBq m-2 s-1 in August and from 10.8 mBq m-2 s-1 in March to 19.7 mBq m-2 s-1 in July, respectively. This systematic difference highlights the importance of realistic soil moisture data for a reliable estimation of 222Rn exhalation rates.

  7. {sup 222}Rn monitoring in the radioactive storage of IPEN/CNEN-SP, Brazil; Monitoracao de Rn-222 nos galpoes de armazenamento de rejeitos radioativos do IPEN

    Energy Technology Data Exchange (ETDEWEB)

    Manocchi, Fabio Henrique

    2014-07-01

    Some radionuclides that make up the radioactive series are noted for their contribution to the total exposure to which individuals are subjected, an important example is known as radon {sup 222}Rn and their descendants, responsible for more than half of the radiation dose received by the population due to natural sources. In this work the effective dose received by the workers of the Management of Radioactive Waste in IPEN due to inhalation of {sup 222}Rn in storage sheds from treated and untreated radioactive waste was evaluated. Concentrations of {sup 222}Rn inside the sheds of treated and untreated radioactive waste G3 and G4 were determined by the technique of passive detection with solid state nuclear track (SSNTD) detectors. The detector used was CR-39 inserted in a diffusion chamber type NRPB. A total of 12 internal points and 1 external point were monitored in the shed radioactive waste treated G4 and 13 points in the shed radioactive waste untreated G3, for a period of 11 months between June 2012 and May 2013. Concentrations ranged 0.73 ± 0.08 to 4.55 ± 0.16 kBq∙m{sup -3} among the monitoring periods in the shed G4 and between 0.61 ± 0.07 and 2.94 ± 0.12 kBq∙m{sup -3} in the shed G3. The effective dose due to inhalation of {sup 222}Rn inside the sheds radioactive waste was calculated according to the procedures of the International Commission on Radiological Protection (ICRP) from a conversion factor of dose, the mean concentration of {sup 222}Rn in the air and time of exposure of individuals. The dose values for G4 and G3 are 15.70 and 9.27 mSv∙a{sup -1} respectively, this being greater than the value established by the National Nuclear Energy Commission (CNEN) and recommended by the International Commission on Radiological Protection (ICRP) 20 mSv / a for occupationally exposed individuals, thus indicating the need for mitigation measures. It should, however, report that was considered a very conservative assumption of 2,000 hours of work on

  8. rn og unge på tværs

    DEFF Research Database (Denmark)

    Aagerup, Lars Christian; Hansen, Steen Juul; Willaa*, Katrine Cecilie Weiland

    Tekstsamlingen kan bruges i undervisningen både på den enkelte professionsbacheloruddannelse og på forløb mellem to eller flere uddannelser. Materialet er også relevant på andre uddannelser bl.a. efter- og videreuddannelser samt for medarbejdere i kommuner og regioner, der arbejder med børn og un...

  9. One year of 222Rn concentration in the atmospheric surface layer

    Directory of Open Access Journals (Sweden)

    S. Galmarini

    2006-01-01

    Full Text Available A one-year time series of 222Rn measured in a rural area in the North of Italy in 1997 is analyzed. The scope of the investigation is to better understand the behavior of this common atmospheric tracer in relation to the meteorological conditions at the release site. Wavelet analysis is used as one of the investigation tools of the time series. The measurements and scalograms of 222Rn are compared to those of wind-speed, pressure, relative humidity, temperature and NOx. The use of wavelet analysis allows the identification of the various scales controlling the influence of the meteorological variables on 222Rn dispersion in the surface layer that are not visible through classical Fourier analysis or direct time series inspection. The analysis of the time series has identified specific periods during which the usual diurnal variation of radon is superimposed to a linear growth thus indicating the build up of concentration at the measurement level. From these specific cases an estimate of the surface flux of 222Rn is made. By means of a simple model these special cases are reproduced.

  10. Uscire di minorità: una proposta radicale di Björn Brembs

    Directory of Open Access Journals (Sweden)

    Maria Chiara Pievatolo

    2015-10-01

    Full Text Available Björn Brembs, in un articolo importante, si chiede se i ricercatori possano davvero considerarsi soltanto vittime dell’attuale malattia della comunicazione scientifica – la privatizzazione dei suoi archivi e del suo sistema di valutazione – o se non ci sia anche...

  11. Tur-samspil i musikterapi med børn med svære kommunikationsvanskeligheder

    DEFF Research Database (Denmark)

    Holck, Ulla

    2006-01-01

    Tur-samspil udgør en vigtig grundsten i den tidlige sociale og kommunikative udvikling, og optræder ofte i musikterapeutiske samspil med kommunikationssvage børn. Artiklen præsenterer relevante begreber fra faglitteraturen om tur-samspil i voksendialoger (de såkaldte Konversationsanalyser), som k...

  12. Fractional Brownian motion, the Matérn process, and stochastic modeling of turbulent dispersion

    Science.gov (United States)

    Lilly, Jonathan M.; Sykulski, Adam M.; Early, Jeffrey J.; Olhede, Sofia C.

    2017-08-01

    Stochastic processes exhibiting power-law slopes in the frequency domain are frequently well modeled by fractional Brownian motion (fBm), with the spectral slope at high frequencies being associated with the degree of small-scale roughness or fractal dimension. However, a broad class of real-world signals have a high-frequency slope, like fBm, but a plateau in the vicinity of zero frequency. This low-frequency plateau, it is shown, implies that the temporal integral of the process exhibits diffusive behavior, dispersing from its initial location at a constant rate. Such processes are not well modeled by fBm, which has a singularity at zero frequency corresponding to an unbounded rate of dispersion. A more appropriate stochastic model is a much lesser-known random process called the Matérn process, which is shown herein to be a damped version of fractional Brownian motion. This article first provides a thorough introduction to fractional Brownian motion, then examines the details of the Matérn process and its relationship to fBm. An algorithm for the simulation of the Matérn process in O(NlogN) operations is given. Unlike fBm, the Matérn process is found to provide an excellent match to modeling velocities from particle trajectories in an application to two-dimensional fluid turbulence.

  13. IL-1RN VNTR Polymorphism in Adult Dermatomyositis and Systemic Lupus Erythematosus

    Directory of Open Access Journals (Sweden)

    Zornitsa Kamenarska

    2014-01-01

    Full Text Available Polymorphisms in the cytokine genes and their natural antagonists are thought to influence the predisposition to dermatomyositis (DM and systemic lupus erythematosus (SLE. A variable number tandem repeat (VNTR polymorphism of 86 bp in intron 2 of the interleukin-1 receptor antagonist (IL-1RN gene leads to the existence of five different alleles which cause differences in the production of both IL-1RA (interleukin-1 receptor antagonist and IL-1β. The aim of this case-control study was to investigate the association between the IL-1RN VNTR polymorphism and the susceptibility to DM and SLE in Bulgarian patients. Altogether 91 patients, 55 with SLE and 36 with DM, as well as 112 unrelated healthy controls, were included in this study. Only three alleles were identified in both patients and controls ((1 four repeats, (2 two repeats, and (3 five repeats. The IL-1RN*2 allele (P=0.02, OR 2.5, and 95% CI 1.2–5.4 and the 1/2+2/2 genotypes were found prevalent among the SLE patients (P=0.05, OR 2.6, and 95% CI 1–6.3. No association was found between this polymorphism and the ACR criteria for SLE as well as with the susceptibility to DM. Our results indicate that the IL-1RN VNTR polymorphism might play a role in the susceptibility of SLE but not DM.

  14. Dose assessment to inhalation exposure of indoor 222Rn daughters in Korea.

    Science.gov (United States)

    Ha, C W; Chang, S Y; Lee, B H

    1992-10-01

    Long-term, average indoor 222Rn concentrations were measured in 12 residential areas by passive CR-39 radon cups. Corresponding equilibrium-equivalent concentration of radon daughters were derived. The resulting effective dose equivalent for the Korean population due to inhalation exposure of this equilibrium-equivalent concentration of radon daughters was then evaluated.

  15. The fundamentals of integrating service in a post-licensure RN to BSN program.

    Science.gov (United States)

    Washington-Brown, Linda; Ritchie, Arlene

    2014-01-01

    Integrating service in a post-licensure registered nurse to bachelor of science in nursing (RN to BSN) program provides licensed registered nurse (RN) students the opportunity to learn, develop, and experience different cultures while serving the community and populations in need (McKinnon & Fitzpatrick, 2012). Service to the community, integrated with academic learning can be applied in a wide variety of settings, including schools, universities, and community faith-based organizations. Academic service-learning (ASL) can involve a group of students, a classroom, or an entire school. In the RN to BSN program, the authors use a student-directed service learning approach that integrates service-learning throughout the curriculum. RN students are introduced to service-learning at program orientation prior to the start of classes and receive reinforcement and active engagement throughout the curriculum. The students and volunteer agencies receive and give benefits from the services provided and the life lessons gained through mentorship, education, and hands-on experiences.

  16. Multifilmionu on tehtuga rahul / Priit Pärn ; interv. Rünno Saaremäe

    Index Scriptorium Estoniae

    Pärn, Priit, 1946-

    2001-01-01

    Priit Pärn eesti animafilmi olukorrast, oma tööst, 2. nov. Rakvere Keslinna galeriis avatud isikunäitusest "Pärna maailm" (30. novembrini näidatakse Rakveres Virma Dragon House'is iga päev kell 16 tema animafilme). Ottawa filmifestivalil anti Priit Pärnale ASIFA Special Award elutöö eest

  17. NCLEX-RN Examination Performance by BSN Graduates of Four Historically Black Colleges and Universities

    Science.gov (United States)

    Chesney, Anita M.

    2010-01-01

    This qualitative multiple-case study research explored and described differences as well as NCLEX-RN preparation strategies used by Historically Black College and University (HBCU) baccalaureate nursing programs with consistent NCLEX pass rates versus those with inconsistent pass rates. Two of the four selected programs had a history of consistent…

  18. Implementing a standardized testing program: preparing students for the NCLEX-RN.

    Science.gov (United States)

    Jacobs, Phyllis; Koehn, Mary L

    2006-01-01

    The undergraduate nursing faculty of a large Midwestern university initiated a program of standardized computerized testing for two purposes: to provide students experience with standardized computerized testing prior to taking the National Council Licensure Exam for Registered Nurses (NCLEX-RN) and to increase the students' NCLEX-RN passing rate. This article chronicles the process of implementing a comprehensive testing program developed by the Assessment Technologies Institute (Overland Park, KS). Although the first class of students to have taken the entire testing package has just graduated, midprogram results have demonstrated potential as key indicators for identifying at-risk students. The trends in scores on standardized computerized tests, grades in prerequisite science courses, and grades in medical-surgical courses are used to identify students who are at risk for failure in the program and on the NCLEX-RN. Faculty advisors meet with these students to develop individual plans of study and to provide additional resources. The testing process is going on smoothly, and faculty members are learning to use the extensive information on students' test scores to further assist them in passing the NCLEX-RN.

  19. Improving NCLEX-RN pass rates by implementing a testing policy.

    Science.gov (United States)

    Schroeder, Jean

    2013-01-01

    To improve the National Council Licensure Examination for Registered Nurses (NCLEX-RN) pass rates and to address the National League for Nursing Accrediting Commission's outcomes standard, a testing policy was developed and implemented at an associate degree of nursing (ADN) program located in a suburb south of Denver, CO. This article describes the testing policy strategies that were implemented by the ADN faculty to evaluate the curriculum. Strategies used for internal curriculum evaluation addressed test item writing, test blueprinting, and the use of item analysis data to evaluate and improve faculty-designed exams. Strategies used for external curriculum evaluation employed the use of HESI specialty exams that were administered at the completion of each course and HESI Exit Exams that were administered at the completion of the first and second years of the curriculum. These strategies were formalized with the development of a testing policy manual that described the procedures used to implement internal and external curriculum evaluation. To measure the effectiveness of the testing policy, NCLEX-RN outcomes were compared before and after implementing the testing policy. Findings indicated that the mean NCLEX-RN pass rate for the 5 years following implementation of the testing policy was significantly higher (P NCLEX-RN pass rate for the 5 years preceding implementation of the testing policy.

  20. The NCLEX-RN examination: charting the course of nursing practice.

    Science.gov (United States)

    Wendt, Anne

    2003-01-01

    The author describes the changes in the 2004 NCLEX-RN(R) Test Plan and provides information about the alternate item formats that are being developed for the NCLEX examination. Nursing educators will learn details about the new test plan and review sample alternate items. Information from this article can be used for curriculum review and to prepare students to take the NCLEX examination.

  1. Report on the July 1991 National Council Licensure Examination for Registered Nurses (NCLEX-RN).

    Science.gov (United States)

    Allen, David F.; Gober, Susan L.

    Factors associated with an unusually high rate of failure on the July 1991 National Council Licensure Examination for Registered Nurses (NCLEX-RN) were analyzed for nursing students at Angelo State University in San Angelo (Texas). Of the 111 nursing degree recipients who took the examination for the first time in July 1991, 18 (16.2%) failed.…

  2. Predictors of Success on the NCLEX-RN among Baccalaureate Nursing Students.

    Science.gov (United States)

    Barkley, Thomas W., Jr.; Dufour, Charles A.; Rhodes, Rosemary S.

    1998-01-01

    A study of 81 bachelor of science in nursing students found a strong correlation between performance on the National Council Licensure Examination for Registered Nurses (NCLEX-RN)and achievement on standardized National League for Nursing Achievement Tests. There was a significant relationship between NCLEX scores and grades in nursing courses.…

  3. Can success and failure be predicted for baccalaureate graduates on the computerized NCLEX-RN?

    Science.gov (United States)

    Seldomridge, Lisa A; Dibartolo, Mary C

    2004-01-01

    The current shortage of nurses and declining national pass rate on the National Council Licensure Examination for Registered Nurses (NCLEX-RN) has heightened educators' interest in identifying students at risk for failure. A retrospective descriptive study was conducted at a rural, public baccalaureate nursing program to determine variables that best predict NCLEX-RN success and failure. Data collected from 1998 through 2002 (N = 186) included entry as native or transfer student, preadmission grade point average (GPA), GPA after completing one semester of nursing courses, cumulative GPA at graduation, grades earned in prerequisite and core nursing courses, test averages in beginning and advanced medical/surgical nursing courses, and performance on the National League for Nursing Comprehensive Achievement Test for Baccalaureate Students (NLNCATBS). Logistic regression analysis revealed that a combination of test average in advanced medical/surgical nursing and percentile score on the NLNCATBS predicted 94.7 percent of NCLEX-RN passes and 33.3 percent of failures. The combination of NLNCATBS score and pathophysiology grade predicted 93.3 percent of NCLEX-RN passes and 50 percent of failures. Although success could be accurately predicted across all models, predicting failure was far more difficult.

  4. Predictors of NCLEX-RN success in a baccalaureate nursing program as a foundation for remediation.

    Science.gov (United States)

    Daley, Linda K; Kirkpatrick, Bonnie L; Frazier, Susan K; Chung, Misook L; Moser, Debra K

    2003-09-01

    This study evaluated students' demographic and nursing program variables and standardized test scores to determine whether significant differences existed between students who successfully completed the National Council Licensure Examination for Registered Nurses (NCLEX-RN) and those who were unsuccessful. In addition, the predictive accuracy of two standardized examinations, the Mosby AssessTest and the Health Education Systems, Incorporated (HESI) Exit Examination were compared. Two cohorts of graduating senior nursing students were studied (1999 cohort N = 121; 2000 cohort N = 103). Demographic and nursing program variables were obtained from student records. The Undergraduate Studies Committee provided standardized test scores (Mosby AssessTest in 1999; HESI Exit Examination in 2000). Only two program variables were consistently associated with success on the NCLEX-RN--final course grade for a didactic, senior-level medical-surgical nursing course and cumulative program grade point average. Scores on both standardized tests were significantly different in students who were successful on the NCLEX-RN and those who were not. The HESI Exit Examination demonstrated greater sensitivity, specificity, positive and negative predictive value, and test efficiency, compared with the Mosby AssessTest. Use of program variables and students' standardized test scores may allow faculty to identify students at risk for failing the NCLEX-RN and to provide structured remediation so these students may be successful on the licensing examination and begin their nursing careers.

  5. Predictors for Success on the NCLEX-RN for Associate Degree Nursing Graduates

    Science.gov (United States)

    Swain, Katrina C.

    2012-01-01

    The nursing shortage is a national issue that has ignited an increasing demand to address the importance of preparing students to be successful on the initial National Council of Licensure Examination for Registered Nursing (NCLEX-RN). Nursing programs are charged by the Board of Nursing to prepare graduates to be successful on the initial…

  6. Forskning i musikterapi - børn med fysiske og psykiske funktionsnedsættelser

    DEFF Research Database (Denmark)

    Holck, Ulla

    2013-01-01

    samspil. Samtidig er det muligt at udtrykke frustration, vrede og sorg gennem musik, så børn og unge med fysiske og psykiske funktionsnedsættelser, der har svært ved at udtrykke og bearbejde følelsesmæssige og relationelle problemer, kan opbygge positive relationserfaringer og styrke selvfølelsen vha...

  7. INDOOR 222RN IN TENNESSEE VALLEY HOUSES: SEASONAL, BUILDING AND GEOLOGICAL FACTORS

    Science.gov (United States)

    A two-season survey of indoor 222Rn concentrations was conducted in 226 occupied houses in Roane County, TN, during 1985 and 1986. A similar survey of 86 houses in Madison County, AL, was conducted in 1988 and 1989. Alpha track detectors were placed in each of the houses for thre...

  8. Nurse forecasting in Europe (RN4CAST): Rationale, design and methodology.

    NARCIS (Netherlands)

    Sermeus, W.; Aiken, L.H.; Heede, K. Van den; Rafferty, A.M.; Griffiths, P.; Moreno-Casbas, M.T.; Busse, R.; Lindqvist, R.; Scott, A.P.; Bruyneel, L.; Brzostek, T.; Kinnunen, J.; Schubert, M.; Schoonhoven, L.; Zikos, D.

    2011-01-01

    BACKGROUND: Current human resources planning models in nursing are unreliable and ineffective as they consider volumes, but ignore effects on quality in patient care. The project RN4CAST aims innovative forecasting methods by addressing not only volumes, but quality of nursing staff as well as

  9. Perfect simulation and moment properties for the Matérn type III process

    DEFF Research Database (Denmark)

    Møller, Jesper; Huber, Mark L.; Wolpert, Robert L.

    In a seminal work, Bertil Matérn introduced several types of processes for modeling repulsive point processes. In this paper an algorithm is presented for the perfect simulation of the Mat´ern III process within a bounded window in Rd fully accounting for edge effects. A simple upper bound...

  10. Rn-222 concentrations in private well water and in river water around Ningyo Toge area

    Energy Technology Data Exchange (ETDEWEB)

    Yunoki, Eiji [Okayama, Prefectural Inst. for Environmental Science and Public Health (Japan)

    1997-02-01

    The Ningyo-Toge Works of Power Reactor and Nuclear Fuel Development Corporation have started the pilot plant for uranium refining and conversion in 1984 and thereafter been producing 6-uranium fluoride, which is a raw material for an uranium concentration plant. The operation of prototype reactor has started since 1989. In this study, radioactive contamination around the works under these circumstances has been monitored in the respects of Rn concentrations in well water and river one for more than 10 years. The radioactivities of well water sampled at 4 points in this area were in a range of 0.6-82.9 Bq/l. The differences in the activities seemed to be depending on petrological properties. For the river water, the Rn concentration was determined at 13 points in the area. Seasonal changes in the Rn concentrations were not significant (p<0.05) but there were significant changes among years during 1985-1995. Further, the radioactive levels of soils collected from riverbed at 5 points were significantly different both for {sup 238}U and {sup 226}Ra, but the ratios of {sup 238}U/{sup 226}Ra were consistent. Furthermore, there was no correlation between {sup 226}Ra and {sup 222}Rn concentrations in the river water. (M.N.)

  11. Using Adobe Connect to Deliver Online Library Instruction to the RN to BSN Program

    Science.gov (United States)

    Carlson, Kathleen

    2011-01-01

    This paper takes a look at how one academic health sciences librarian brought mediated literature searching to the distance RN to BSN nursing students. It takes a look at why Adobe Connect was the webinar software that was selected to deliver online instruction to the students. The article explains how students participated in a pre-class survey…

  12. Indoor radon (Rn-222) concentration measurements in Cyprus using high-sensitivity portable detectors

    CERN Document Server

    Anastasiou, T; Christofides, S; Christodoulides, G

    2003-01-01

    Using high--sensitivity radon (Rn-222) portable detectors, the airborne Rn-222 concentration in the interior of various Cypriot buildings and dwellings was measured. For each preselected building and dwelling, a calibrated detector was put into a closed room, and the Rn-222 concentration was registered in sampling intervals of 2 to 4 hours for a total counting time of typically 48 hours. Rn-222 activity concentrations were found to be in the range of 6.2 to 102.8 Bq/m**3, with an overall arithmetic mean value of (19.3 +- 1.6) Bq/m**3. This value is by a factor of two below the world average (population-weighted) value of 39 Bq/m**3. The total annual effective dose equivalent to the Cypriot population was calculated to be between 0.16 and 2.6 mSv with an overall arithmetic mean value of (0.49 +- 0.04) mSv.

  13. Biodecolorization of Reactive Yellow-2 by Serratia sp. RN34 Isolated from Textile Wastewater.

    Science.gov (United States)

    Najme, Rabia; Hussain, Sabir; Maqbool, Zahid; Imran, Muhammad; Mahmood, Faisal; Manzoor, Hamid; Yasmeen, Tahira; Shehzad, Tanvir

    2015-12-01

    Remediation of colored textile wastewaters is a matter of interest. In this study, 49 bacteria were isolated from the textile wastewater and tested for their ability to decolorize reactive yellow-2 (RY2) dye. The most efficient isolate, RN34, was identified through amplification, sequencing, and phylogenetic analysis of its 16S rDNA and was designated as Serratia sp. RN34. This bacterium was also found capable of decolorizing other related reactive azo-dyes, including reactive black-5, reactive red-120, and reactive orange-16 but at varying rates. The optimum pH for decolorization of RY2 by the strain RN34 was 7.5 using yeast extract as cosubstrate under static incubation at 30 °C. The strain RN34 also showed potential to decolorize RY2 in the presence of considerable amounts of hexavalent chromium and sodium chloride. A phytotoxicity study demonstrated relatively reduced toxicity of RY2 decolorized products on Vigna radiata plant as compared to the uninoculated RY2 solution.

  14. R-n extension of the Starobinsky model in old minimal supergravity

    NARCIS (Netherlands)

    Özkan, Mehmet; Pang, Yi

    2014-01-01

    We provide a succinct way to construct the supersymmetric completion of R-n (n >= 3) in components using the superconformal formulation of old minimal supergravity. As a consequence, we obtain the polynomial f(R) supergravity extending the supersymmetric Starobinsky model to any higher power of R. T

  15. En forstærket indsats over for kriminalitetstruede børn og unge

    DEFF Research Database (Denmark)

    Bonke, Jens; Carøe Christiansen, Connie

    Regeringens voldspakke fra 1997 resulterede bl.a. i nye institutionsformer og behandslingstilbud og en forstærket opsøgende indsats i arbejdet med børn og unge, der allerede har begået kriminalitet, eller er socialt belastede og derfor er kriminalitetestruede. Socialforskningsinstituttet evaluere...

  16. Using Adobe Connect to Deliver Online Library Instruction to the RN to BSN Program

    Science.gov (United States)

    Carlson, Kathleen

    2011-01-01

    This paper takes a look at how one academic health sciences librarian brought mediated literature searching to the distance RN to BSN nursing students. It takes a look at why Adobe Connect was the webinar software that was selected to deliver online instruction to the students. The article explains how students participated in a pre-class survey…

  17. Nurse forecasting in Europe (RN4CAST): Rationale, design and methodology.

    NARCIS (Netherlands)

    Sermeus, W.; Aiken, L.H.; Heede, K. Van den; Rafferty, A.M.; Griffiths, P.; Moreno-Casbas, M.T.; Busse, R.; Lindqvist, R.; Scott, A.P.; Bruyneel, L.; Brzostek, T.; Kinnunen, J.; Schubert, M.; Schoonhoven, L.; Zikos, D.

    2011-01-01

    BACKGROUND: Current human resources planning models in nursing are unreliable and ineffective as they consider volumes, but ignore effects on quality in patient care. The project RN4CAST aims innovative forecasting methods by addressing not only volumes, but quality of nursing staff as well as quali

  18. One year of 222Rn concentration in the atmospheric surface layer

    Directory of Open Access Journals (Sweden)

    S. Galmarini

    2005-12-01

    Full Text Available A one-year time series of 222Rn measured in a rural area in the North of Italy in 1997 is analyzed. The scope of the investigation is to better understand the behavior of this common atmospheric tracer in relation to the meteorological conditions at the release site. Wavelet analysis is used as one of the investigation tools of the time series. The measurements and scalograms of 222Rn are compared to those of wind-speed, pressure, relative humidity, temperature and NOx. The use of wavelet analysis allows the identification of the various scales controlling the influence of the meteorological variables on 222Rn dispersion in the surface layer that are not visible through classical Fourier analysis or direct time series inspection. The analysis of the time series has identified specific periods during which the usual diurnal variation of radon is superimposed to a linear growth thus indicating the build up of concentration at the measurement level. From these specific cases an estimate of the surface flux of 222Rn is made. By means of a simple model these special cases are reproduced.

  19. Frankfurt ja tema mitu külge / Björn Koop

    Index Scriptorium Estoniae

    Koop, Björn, 1982-

    2012-01-01

    2007. aastast Kia Euroopa disainikeskuses töötav Eesti Kunstiakadeemia lõpetanud autodisainer Björn Koop Frankfurdist, linna ja lähiümbrusesse koondunud autodisaini büroodest. Autodisaini stuudiote funktsioonidest. Eesti disainist Frankfurdis

  20. Early Identification of At-Risk LPN-to-RN Students

    Science.gov (United States)

    Hawthorne, Lisa K.

    2013-01-01

    Nurse education programs are implementing standardized assessments without evaluating their effectiveness. Graduates of associate degree nursing programs continue to be unsuccessful with licensure examinations, despite standardized testing and stronger admission criteria. This problem is also prevalent for LPN-to-RN education programs due to a…

  1. Frankfurt ja tema mitu külge / Björn Koop

    Index Scriptorium Estoniae

    Koop, Björn, 1982-

    2012-01-01

    2007. aastast Kia Euroopa disainikeskuses töötav Eesti Kunstiakadeemia lõpetanud autodisainer Björn Koop Frankfurdist, linna ja lähiümbrusesse koondunud autodisaini büroodest. Autodisaini stuudiote funktsioonidest. Eesti disainist Frankfurdis

  2. Nurse forecasting in Europe (RN4CAST): Rationale, design and methodology.

    NARCIS (Netherlands)

    Sermeus, W.; Aiken, L.H.; Heede, K. Van den; Rafferty, A.M.; Griffiths, P.; Moreno-Casbas, M.T.; Busse, R.; Lindqvist, R.; Scott, A.P.; Bruyneel, L.; Brzostek, T.; Kinnunen, J.; Schubert, M.; Schoonhoven, L.; Zikos, D.

    2011-01-01

    BACKGROUND: Current human resources planning models in nursing are unreliable and ineffective as they consider volumes, but ignore effects on quality in patient care. The project RN4CAST aims innovative forecasting methods by addressing not only volumes, but quality of nursing staff as well as quali

  3. Külavanemast sõltub kohalikus elus palju / Henn Pärn

    Index Scriptorium Estoniae

    Pärn, Henn, 1941-

    2001-01-01

    Eesti tööandjate keskliidu nõunik, Loksa valla Kalme küla vanem Henn Pärn külavanema muredest, oma tegevuse eesmärkidest, külaliikumisest, Loksa valla abist, samuti ametiühingute osast Eestis

  4. Radon ((222)Rn) concentration in indoor air near the coal mining area of Nui Beo, North of Vietnam.

    Science.gov (United States)

    Nhan, Dang Duc; Fernando, Carvalho P; Thu Ha, Nguyen Thi; Long, Nguyen Quang; Thuan, Dao Dinh; Fonseca, Heloisa

    2012-08-01

    Concentrations of radioactive radon gas ((222)Rn) were measured using passive monitors based on LR115 solid state track detectors during June-July 2010 in indoor air of dwellings in the Nui Beo coal mining area, mostly in Cam Pha and Ha Long coastal towns, Quang Ninh province, in the North of Vietnam. Global results of (222)Rn concentrations indoors varied from ≤6 to 145 Bq m(-3) averaging 46 ± 26 Bq m(-3) (n = 37), with a median value of 47 Bq m(-3). This was similar to outdoor (222)Rn concentrations in the region, averaging 43 ± 19 Bq m(-3) (n = 10), with a median value of 44 Bq m(-3). Indoor (222)Rn concentrations in the coastal town dwellings only were in average lower although not significantly different from indoor (222)Rn concentrations measured at the coal storage field near the harbor, 67 ± 4 Bq m(-3) (n = 3). Furthermore, there was no significant difference in the average (222)Rn concentration in indoor air measured in the coastal towns region and those at the touristic Tuan Chau Island located about 45 km south of the coal mine, in the Ha Long Bay. The indoor (222)Rn concentration in a floating house at the Bai Tu Long Bay, and assumed as the best estimate of the baseline (222)Rn in surface air, was 27 ± 3 Bq m(-3) (n = 3). Indoor average concentration of (222)Rn in dwellings at the Ha Noi city, inland and outside the coal mining area, was determined at 30 Bq m(-3). These results suggest that (222)Rn exhalation from the ground at the Nui Beo coal mining area may have contributed to generally increase (222)Rn concentration in the surface air of that region up to 1.7 times above the baseline value measured at the Bai Tu Long Bay and Ha Noi. The average indoor concentration of (222)Rn in Cam Pha-Ha Long area is about one-third of the value of the so-called Action Level set up by the US EPA of 148 Bq m(-3). Results suggest that there is no significant public health risk from (222)Rn exposure in the study region.

  5. Prevalência do hipotiroidismo subclínico e repercussões sobre o perfil lipídico e massa óssea em mulheres na pós-menopausa Prevalence of subclinical hypothyroidism and its effects on lipidic profile and bone mineral density in postmenopausal women

    Directory of Open Access Journals (Sweden)

    Eliana Aguiar Petri Nahas

    2005-08-01

    Full Text Available OBJETIVO: avaliar a prevalência do hipotiroidismo subclínico e suas repercussões sobre o perfil lipídico e a densidade mineral óssea (DMO em mulheres na pós-menopausa. Métodos: trata-se de estudo transversal com recuperação de dados de prontuários de pacientes acompanhadas em ambulatório de climatério. Critérios de inclusão: mulheres na pós-menopausa com dosagem do hormônio estimulador da tiróide (TSH e de tiroxina livre (T4-L. Critérios de exclusão: hipertiroidismo e carcinoma de tiróide. Considerou-se hipotiroidismo subclínico valores de TSH superiores a 5,0 mUI/mL e T4-L normal. Foram selecionadas 320 pacientes (idade 55,2±6,4 anos divididas em 3 grupos: função tiroideana normal (n=208, hipotiroidismo subclínico (n=53 e hipotiroidismo clínico sob tratamento (n=59. Foram analisados dados clínicos, uso de terapia hormonal, índice de massa corpórea (IMC=kg/m², perfil lipídico (colesterol total, HDL, LDL, triglicerídeos e DMO da coluna lombar e fêmur. Na análise estatística, as diferenças entre as médias dos grupos foram comparadas utilizando-se a análise de variância (ANOVA. Para múltipla comparação, assumindo que a variância era diferente entre os grupos, utilizou-se o método de Tukey. RESULTADOS: o hipotiroidismo subclínico foi diagnosticado em 16,1% dos casos. Os grupos foram homogêneos quanto às características clínicas, IMC e perfil lipídico e uso de terapêutica hormonal. Nas pacientes com hipotiroidismo subclínico ou clínico encontrou-se menor freqüência de osteopenia na coluna lombar e fêmur quando comparadas às eutiroidianas (pPURPOSE: to evaluate the prevalence of subclinical hypothyroidism and its effects on lipidic profile and bone mineral density (BMD in postmenopausal women. METHODS: a cross-sectional study with survey of data from medical records of patients attended at a climacteric outpatient clinic. Inclusion criteria: postmenopausal women with measured thyroid

  6. Distribution characteristics of Rn-222 concentrations on Misasa spa district, Tottori Pref., JAPAN

    Energy Technology Data Exchange (ETDEWEB)

    Koga, T.; Morishima, H.; Inagaki, M.; Tanaka, Y.; Mifune, M. [Kinki Univ., Fuse, Osaka (Japan). Atomic Energy Research Inst

    2000-05-01

    We have carried out convenient and highly sensitive radon measurement using absorption to means of a detecting active charcoal and a liquid scintillation spectrometer, Packard Pico-rad System. The {alpha} and {beta} radioactivities of its decay products originated from radon gas absorbed detector exposed to air were measured. Its detection limit is 1.7Bq/m{sup 3} in air with an accuracy of about 10% on 200 minutes of counting time, and correction coefficient, the ratio of measured radon concentration to standard radon concentration (about 300Bq/m{sup 3}) is 0.75 on the standard radon gas chamber of Japan Nuclear Cycle Development Institute. Misasa district, Tottori pref. is famous for the radioactive spa in Japan. We have measured the Rn-222 concentrations in air with a set of indoor and outdoor. The distribution range of Rn-222 concentrations in air on Misasa spa district from 1995 to 1998 are 8 - 194Bq/m{sup 3} indoors, 2 - 150Bq/m{sup 3} outdoors, the former generally are higher than those outdoor and these ratios fluctuate on the range 1.1 - 2.3. Rn-222 concentrations in air on Asahi, Takeda and Misasa districts geologically formed from granite strata were higher than those on Mitoku and Osika districts formed from volcanic rocks (Andesite and Basalt), and its ratio of indoor to outdoor were similar trend too. The strata is also a influence on Rn-222 concentration in air. The Rn-222 concentrations on Higashi-osaka as control area are 4.9 - 17Bq/m{sup 3} indoors and 0.33 - 10Bq/m{sup 3} outdoors. (author)

  7. Identification of the minimal replicon and the origin of replication of the crenarchaeal plasmid pRN1.

    Science.gov (United States)

    Berkner, Silvia; Hinojosa, Mery Pina; Prangishvili, David; Lipps, Georg

    2014-10-01

    We have determined the minimal replicon of the crenarchaeal plasmid pRN1. It consists of 3097 base pairs amounting to 58% of the genome of pRN1. The minimal replicon comprises replication operon orf56/orf904 coding for a transcriptional repressor and the replication protein of pRN1. An upstream region of 64 bp that contains the promoter of the replication operon is essential as well as 166 bp of sequence downstream of the orf904 gene. This region contains a putative transcriptional terminator and a 100 nucleotides long stem-loop structure. Only the latter structure was shown to be required for replication. In addition replication was sustained when the stem-loop was displaced to another part of the pRN1 sequence. By mutational analysis we also find that the integrity of the stem-loop structure is required to maintain the replication of pRN1-derived constructs. As similar stem-loop structures are also present in other members of the pRN family, we suggest that this conserved structural element could be the origin of replication for the pRN plasmids. Further bioinformatic analysis revealed that the domain structure of the replication protein and the presence of a similar stem-loop structure as the putative replication origin are also found in several bacteriophages.

  8. Levan-type fructooligosaccharide production using Bacillus licheniformis RN-01 levansucrase Y246S immobilized on chitosan beads

    Directory of Open Access Journals (Sweden)

    Surawut Sangmanee

    2016-06-01

    Full Text Available Bacillus licheniformis RN-01 levansucrase Y246S (LsRN-Y246S was immobilized by covalently linking onto chitosan, Sepabead EC-EP, and Sepabead EC-HFA, beads. The stability of immobilized LsRN-Y246S was found to be the highest with chitosan beads, retaining more than 70% activity after 13 weeks storage at 4 oC, and 68% activity after 12 hours incubation at 40°C. LsRN-Y246S immobilized on chitosan beads withstands sucrose concentrations up to 70% (w/v, retaining over 85% of its activity, significantly better than LsRN-Y246S immobilized on others supporting matrices. LsRN-Y246S immobilized on chitosan showed a 2.4 fold increase in activity in the presence of Mn2+, and gave slight protection against deactivation by of Cu2+, Zn2+, Fe3+, SDS and EDTA. A maximum of 8.36 g and an average of 7.35 g LFOS yield at least up to DP 11 can be produced from 25 g of sucrose, during five production cycles. We have demonstrated that LFOS can be effectively produced by chitosan immobilized LsRN-Y246S and purified.

  9. Comparison of one- and two-filter detectors for atmospheric 222Rn measurements under various meteorological conditions

    Directory of Open Access Journals (Sweden)

    F. Conen

    2010-06-01

    Full Text Available Parallel monitoring of 222Rn and its short-lived progeny (218Po and 214Pb were carried out from November 2007 to April 2008 close to the top of the Schauinsland mountain, partly covered with forest, in South-West Germany. Samples were aspired from the same location at 2.5 m above ground level. We measured 222Rn with a dual flow loop, two-filter detector and its short-lived progeny with a one-filter detector. A reference sector for events, facing a steep valley and dominated by pasture, was used to minimize differences between 222Rn and progeny-derived 222Rn activity concentrations. In the two major wind sectors covered by forest to a distance between 60 m and 80 m towards the station progeny-derived 222Rn activity concentration was on average equal to 87% (without precipitation and 74% (with precipitation of 222Rn activity concentration. The observations show that most of the time both detector types follow the same pattern. Still, there is no single disequilibrium factor that could be used to exactly transform short-lived progeny to 222Rn activity concentration under all meteorological conditions.

  10. pH-dependent binding engineering reveals an FcRn affinity threshold that governs IgG recycling.

    Science.gov (United States)

    Borrok, M Jack; Wu, Yanli; Beyaz, Nurten; Yu, Xiang-Qing; Oganesyan, Vaheh; Dall'Acqua, William F; Tsui, Ping

    2015-02-13

    The Fc domain of IgG has been the target of multiple mutational studies aimed at altering the pH-dependent IgG/FcRn interaction to modulate IgG pharmacokinetics. These studies have yielded antibody variants with disparate pharmacokinetic characteristics, ranging from extended in vivo half-life to those exhibiting extremely rapid clearance. To better understand pH-dependent binding parameters that govern these outcomes and limit FcRn-mediated half-life extension, we generated a panel of novel Fc variants with high affinity binding at acidic pH that vary in pH 7.4 affinities and assessed pharmacokinetic outcomes. Pharmacokinetic studies in human FcRn transgenic mice and cynomolgus monkeys showed that multiple variants with increased FcRn affinities at acidic pH exhibited extended serum half-lives relative to the parental IgG. Importantly, the results reveal an underappreciated affinity threshold of neutral pH binding that determines IgG recycling efficiency. Variants with pH 7.4 FcRn affinities below this threshold recycle efficiently and can exhibit increased serum persistence. Increasing neutral pH FcRn affinity beyond this threshold reduced serum persistence by offsetting the benefits of increased pH 6.0 binding. Ultra-high affinity binding to FcRn at both acidic and neutral pH leads to rapid serum clearance.

  11. (222)Rn activity in groundwater of the St. Lawrence Lowlands, Quebec, eastern Canada: relation with local geology and health hazard.

    Science.gov (United States)

    Pinti, Daniele L; Retailleau, Sophie; Barnetche, Diogo; Moreira, Floriane; Moritz, Anja M; Larocque, Marie; Gélinas, Yves; Lefebvre, René; Hélie, Jean-François; Valadez, Arisai

    2014-10-01

    One hundred ninety-eight groundwater wells were sampled to measure the (222)Rn activity in the region between Montreal and Quebec City, eastern Canada. The aim of this study was to relate the spatial distribution of (222)Rn activity to the geology and the hydrogeology of the study area and to estimate the potential health risks associated with (222)Rn in the most populated area of the Province of Quebec. Most of the groundwater samples show low (222)Rn activities with a median value of 8.6 Bq/L. Ninety percent of samples show (222)Rn activity lower than 100 Bq/L, the exposure limit in groundwater recommended by the World Health Organization. A few higher (222)Rn activities (up to 310 Bq/L) have been measured in wells from the Appalachian Mountains and from the magmatic intrusion of Mont-Saint-Hilaire, known for its high level of indoor radon. The spatial distribution of (222)Rn activity seems to be related mainly to lithology differences between U-richer metasediments of the Appalachian Mountains and magmatic intrusions and the carbonaceous silty shales of the St. Lawrence Platform. Radon is slightly enriched in sodium-chlorine waters that evolved at contact with clay-rich formations. (226)Ra, the parent element of (222)Rn could be easily adsorbed on clays, creating a favorable environment for the production and release of (222)Rn into groundwater. The contribution of groundwater radon to indoor radon or by ingestion is minimal except for specific areas near Mont-Saint-Hilaire or in the Appalachian Mountains where this contribution could reach 45% of the total radioactive annual dose. Copyright © 2014 Elsevier Ltd. All rights reserved.

  12. Avaliação terapêutica e posológica da levotiroxina sódica em cães com hipotiroidismo primário adquirido

    Directory of Open Access Journals (Sweden)

    Viviani De Marco

    2012-10-01

    Full Text Available O hipotireoidismo primário adquirido é uma endocrinopatia frequentemente diagnosticada na espécie canina. A terapia consiste na suplementação oral com levotiroxina sódica (L-tiroxina, no entanto vários protocolos terapêuticos têm sido propostos pela literatura, com doses variando 11 a 44µg/kg uma a duas vezes ao dia, visto à grande variabilidade de absorção e meia-vida plasmática do fármaco. Foram estudados 30 cães com hipotiroidismo primário adquirido (13 machos e 17 fêmeas, idade média de 7,9±1,9 anos e peso médio de 19,1±12,6 kg atendidos no Hospital Veterinário da Universidade Guarulhos (UnG e no Serviço de Endocrinologia de duas clínicas particulares da cidade de São Paulo (2009-2011, com o objetivo de avaliar a posologia e a frequência de administração da L-tiroxina, mais frequentemente utilizada, capaz de garantir um controle terapêutico satisfatório, avaliado através dos sinais clínicos e do teste pós-tiroxina, além de correlacionar a dose de tiroxina empregada com o peso dos animais. A dose média de tiroxina utilizada em nossa casuística foi de 16,9±3,1µg/kg, sendo a frequência de administração a cada 12 horas em 50% dos casos. Para se investigar uma possível correlação entre o peso e a dosagem de tiroxina utilizada, uma vez que cães de pequeno porte apresentam maior taxa metabólica que cães de grande porte, os animais foram agrupados em grupo A, cães com peso 10 kg (n=18/30, 26,8±10,7 kg. A dose média de tiroxina empregada nos grupos A e B não apresentaram diferença estatística e foram, respectivamente, 16±3µg/kg e 17±3µg/kg. A frequência de administração foi 50% a cada 24 horas e 50% a cada 12 horas para ambos os grupos. Dessa forma, a dose de tiroxina não parece se correlacionar com o peso do animal, sendo imprevisível quem deverá receber dose e frequência máxima da medicação. O protocolo deve ser individualizado e o paciente devidamente monitorado.

  13. TSH Normal Alta: Su relación con bajo HDL-Colesterol en mujeres con resistencia a la insulina con independencia de otros posibles factores concurrentes

    Directory of Open Access Journals (Sweden)

    J Rezzónico

    2008-12-01

    Full Text Available Objetivo: En el hipotiroidismo tanto clínico como subclínico se han descripto alteraciones en el metabolismo lipídico, entre ellas la disminución de colesterol de lipoproteínas de alta densidad (HDL-C. Considerando el rango normal de TSH entre 0.4-3.0 μUI/ml y valores normales altos entre 2.0 y 3.0 μUI/ml, nosotros investigamos la hipótesis de que niveles normales altos de TSH e insulinorresistencia (IR se encuentran relacionados con HDL-C bajo en mujeres, en ausencia de otros factores concurrentes. Materiales y métodos: Estudiamos en un estudio transversal a 200 mujeres sanas, edad 18-50 años, eutiroideas, normotensas, con anticuerpos antiperoxidasa (ATPO negativos, no diabéticas, premenopáusicas, IMC 18.0-25.0 Kg/m2, perímetro de cintura ≤ 88 cm; perímetro de cuello ≤ a 35 cm. Se las dividió en 4 grupos, cada uno compuesto por 50 mujeres: Grupo 1 (G1 TSH ≥ 2μU/ml, IR; grupo 2 (G2 TSH ≥ 2μU/ml, no IR; grupo 3 (G3: TSH 0,40 a 1,99 μU/ml, IR; Grupo 4 (G4 TSH 0,40 a 1,99 μU/ml, no IR. Se les midió lípidos, TSH, T4 total y libre (T4L, glucosa e insulina basal y posprandial, índices HOMA y QUICKI y volumen tiroideo (VT. Resultados: Observamos que en el G1 el nivel de HDL-C (46,7± 8,1 mg/dl fue significativamente menor que en los restantes grupos. (vs G2: 56,8 ± 8,6 mg/dl; vs G3: 51,2 ± 7,6 mg/dl y vs G4: 56,5 ± 9,1 mg/dl. (pIt has been described abnormalities in lipid metabolism in clinical and subclinical hypothyroidism, including the reduction of high-density lipoprotein cholesterol (HDL-C. Considering the normal range for TSH between 0.4-3.0 uUI / ml and high-normal values between 2.0 and 3.0 uUI / ml, we investigated the hypothesis that in euthyroid women, high-normal TSH levels and insulin resistance (IR are associated with low HDL-C. We observed in euthyroid women with high-normal TSH and insulin resistance, without other factors, a significantly lower level of HDL-C than in non-insulin or insulin resistance

  14. Obituary: Jörn Rossa (1969-2009)

    Science.gov (United States)

    Veras, Dimitri

    2009-12-01

    rn Rossa (often spelled Joern Rossa) passed away on September 19, 2009 at the young age of 40 in Mainz, Germany from a virulent fast-acting blood cancer. He was born in that same city on March 17, 1969 to Alfred and Gudrun Rossa, who survive their only child. Joern had a deep, lifelong love of astronomy, as evidenced by the handwritten letters he wrote in his youth to prominent astronomers and astronauts for their perspectives, signatures and reprints, the popular astronomy magazines which he collected for decades, the decision to abandon a career as a locomotive driver and relearn the math and physics required to pursue his passion, the many papers he published himself, and the numerous space shuttle launches he made a point to personally attend at Kennedy Space Center. Since High School, Joern carried out observations using his own telescope, traveled with friends to remote locations to practice "serious" astrophotography, and lectured at a local amateur club. After attaining his undergraduate degree at the University of Heidelberg (Germany) in 1996, Joern continued his education at the Ruhr-University Bochum in Germany, where he worked under the guidance of Ralf-Juergen Dettmar. He received his Ph.D. degree in 2001 with a thesis focusing on extraplanar diffuse ionized gas and dust in the halos of edge-on spiral galaxies. He performed the largest-to-this-day ground-based H-alpha survey of a large number of galaxies, quantified their extraplanar ISM, and correlated its properties with the starburst activity in the galaxy disk. After his graduation, Joern stayed in Bochum for another year as a Postdoctoral Associate. During this time he expanded his interests in the same general subject area through the use of X-ray (XMM, Chandra) and radio observations. His interest in the ISM of nearby galaxies continued through his subsequent postdoctoral career. He analyzed high-spatial resolution Hubble Space Telescope (HST) WFPC2 H-alpha data of the edge-on non

  15. Strategies to promote success on the NCLEX-RN for students with English as a second language.

    Science.gov (United States)

    Cunningham, Helene; Stacciarini, Jeanne-Marie R; Towle, Susan

    2004-01-01

    Faced with an increasingly diverse population and a shortage of nurses, US schools of nursing need to educate nurses from diverse backgrounds. These students may use English as a second language (ESL), leading to challenges that can place them at risk for not passing the NCLEX-RN. The authors present several challenges for ESL students preparing for the NCLEX-RN and successful strategies to coach them. These preparation issues and strategies may also help foreign-educated nurses prepare for the NCLEX-RN.

  16. Hipotiroidismo en rumiantes Hypothyroidism in Ruminants

    OpenAIRE

    Matamoros, R.; P.A. CONTRERAS; WITTWER, F.; M.I. MAYORGA

    2003-01-01

    La glándula tiroides está presente en todos los vertebrados y es única entre las glándulas endocrinas en que almacena sus productos de secreción (hormonas tiroidales) extracelularmente. Estas hormonas juegan un papel indispensable en una variedad de reacciones bioquímicas en tejidos periféricos como el músculo esquelético, cardíaco, el hígado y el riñón los que colectivamente controlan la actividad metabólica basal del organismo. A pesar de que muchos procesos fisiológicos en rumiantes requie...

  17. Calibration factor determination for solid nuclear track detectors CR-39 type exposed to Rn-222; Determinacao do fator de calibracao para detectores solidos de tracos nucleares tipo CR-39 expostos a Rn-222

    Energy Technology Data Exchange (ETDEWEB)

    Cazula, Camila Dias; Campos, Marcia Pires de; Mazzilli, Barbara Paci, E-mail: cdcazula@ipen.br, E-mail: mpcampos@ipen.br, E-mail: mazzilli@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2014-07-01

    In the detection method with solid nuclear track detector, when a heavy particle rests on the detector surface, causes a breakdown in their molecular structure forming a trace. One of the typical applications of these detectors is the measurement of the concentration of Rn -222 in air, a noble radioactive gas, part of the U-238 series, emitting alpha particles and important in epidemiological studies to protect individuals from natural radiation. To determine the concentration of Rn -222 in the air in a room is necessary to know the density of lines (traces / cm{sup 2}) on the detector surface, the exposure time and the calibration factor. The determination of the calibration factor for CR-39 detectors was taken from the exposure of these to a known concentration of Rn-222. Therefore, the detectors were placed inside a cell of Lucas adapted and subsequently exposed to a concentration of Rn-222 15 kBq / m{sup 3}, by means of the apparatus RN-150 Pylon Electronics Incorporation, which has a source of Ra-226 and releases known concentrations of Rn-222. Six calibration factor determinations were performed, the average value obtained was 0.0534 ±0.0021 (traces / cm{sup 2} per Bq / m{sup 3} day). The results are consistent with literature values for the same type of detector and showed good reproducibility.

  18. Myopi, retinale karændringer og choroideatykkelse i relation til fysisk aktivitet hos børn og unge

    DEFF Research Database (Denmark)

    Lundberg, Kristian

    Foredrag med præsentation af forskningsprojekt med fokus på foreløbige resultater om prævalensen af myopi blandt danske skolebørn og associationen mellem fysisk aktivitet, myopi og choroidal tykkelse....

  19. Absolute measurement of the activity of sup 2 sup 2 sup 2 Rn using a proportional counter

    CERN Document Server

    Busch, I; Keyser, U

    2002-01-01

    A measuring set-up comprising a proportional counter of calculable sup 2 sup 2 sup 2 Rn efficiency and quantifiable active volume (delta sub V <0.1%) is described. On account of the special design of the end caps, the counter is suitable for absolute activity measurements on gaseous radiation sources. The sup 2 sup 2 sup 2 Rn efficiency is determined by computer simulation of the measured alpha-spectra. The procedures necessary for absolute measurements by means of the counter are described, and the suitability of the counter for absolute measurements of the sup 2 sup 2 sup 2 Rn activity is proved by experiments. Thus, a new method for the realization of the unit of activity of sup 2 sup 2 sup 2 Rn is obtained, which is independent of the unit of activity of sup 2 sup 2 sup 6 Ra.

  20. The diurnal evolution of 222Rn and its progeny in the atmospheric boundary layer during the Wangara experiment

    Directory of Open Access Journals (Sweden)

    S. Galmarini

    2007-06-01

    Full Text Available The diurnal atmospheric boundary layer evolution of the 222Rn decaying family is studied by using a state-of-the-art large-eddy simulation model. In particular, a diurnal cycle observed during the Wangara experiment is successfully simulated together with the effect of diurnal varying turbulent characteristics on radioactive compounds in a secular equilibrium. This study allows us to clearly analyze and identify the boundary layer processes driving the 222Rn and its progeny concentration behaviors. The activity disequilibrium observed in the nocturnal boundary layer is due to the proximity of the radon source and the trapping of fresh 222Rn close to the surface induced by the weak vertical transport. During the morning transition, the secular equilibrium is fast restored by the vigorous turbulent mixing. The evolution of 222Rn and its progeny concentration in the unsteady growing convective boundary layer depends on the strength of entrainment events.

  1. Commuting to work: RN travel time to employment in rural and urban areas.

    Science.gov (United States)

    Rosenberg, Marie-Claire; Corcoran, Sean P; Kovner, Christine; Brewer, Carol

    2011-02-01

    To investigate the variation in average daily travel time to work among registered nurses (RNs) living in urban, suburban, and rural areas. We examine how travel time varies across RN characteristics, job setting, and availability of local employment opportunities. Descriptive statistics and linear regression using a 5% sample from the 2000 Census and a longitudinal survey of newly licensed RNs (NLRN). Travel time for NLRN respondents was estimated using geographic information systems (GIS) software. In the NLRN, rural nurses and those living in small towns had significantly longer average commute times. Young married RNs and RNs with children also tended to have longer commute times, as did RNs employed by hospitals. The findings indicate that travel time to work varies significantly across locale types. Further research is needed to understand whether and to what extent lengthy commute times impact RN workforce needs in rural and urban areas.

  2. ANALOG OF AN INEQUALITY OF BOHR FOR INTEGRALS OF FUNCTIONS FROM L p (Rn

    Directory of Open Access Journals (Sweden)

    Ivanov

    2014-11-01

    Full Text Available Let p ∈ (2, +∞], n ≥ 1 and ∆ = (∆1, . . . , ∆n, ∆k > 0, 1 ≤ k ≤ n. It is proved that for functions γ(t ∈ L p (R n spectrum of which is separated from each of n the coordinate hyperplanes on the distance not less than ∆k, 1 ≤ k ≤ n respectively, the inequality is valid: ∫ Et γ(τ dτ L∞(Rn ≤ C n (q [∏n k=1 1 ∆ 1/q k ] ∥γ(τ ∥Lp(Rn , where t = (t1, . . . , tn ∈ R n , Et = {τ | τ = (τ1, . . . , τn ∈ R n , τj ∈ [0, tj ], if tj ≥ 0, and τj ∈ [tj , 0], if tj 0, 1 p + 1 q = 1 does not depend on γ(τ and vector ∆.

  3. Online case studies: HESI Exit Exam scores and NCLEX-RN outcomes.

    Science.gov (United States)

    Young, Anne; Rose, Gloria; Willson, Pamela

    2013-01-01

    Using data obtained for the 7th HESI Exit Exam (E(2)) validity study, the value of Elsevier's online case studies in assisting students to prepare for the E(2) and the National Council Licensure Examination for Registered Nurses (NCLEX-RN) was investigated. Of the 137 randomly selected schools of nursing, 72 (52.55%) participated in the study. The student sample consisted of 4,383 students from associate degree, baccalaureate, and diploma schools of nursing. Findings indicated that the mean E(2) score and the NCLEX-RN pass rate were significantly higher for students attending schools that used the case studies than they were for students attending schools that did not use the case studies. Descriptive data indicated that the case studies were most often used for remediation and examination preparation.

  4. Ensuring NCLEX-RN success for first-time test-takers.

    Science.gov (United States)

    Norton, Colleen K; Relf, Michael V; Cox, Catherine W; Farley, Jean; Lachat, Maryanne; Tucker, Michelle; Murray, Jason

    2006-01-01

    A major indicator of baccalaureate nursing program effectiveness is the pass rate on the National Council Licensure Examinations, Registered Nurse (NCLEX-RN) among first-time candidates. This article highlights the scope, instructional methods, and outcomes of the remediation program at Georgetown University School of Nursing & Health Studies (GU-NHS). With implementation of the multifaceted program, the NCLEX-RN pass rate for first-time takers at GU-NHS has been consistently above the national mean among all first-time candidates. Although it is impossible to determine which strategy made the greatest contribution to the success of the program, the cumulative effect is impressive and indicates the students are prepared for the challenge of the examination and contemporary nursing practice.

  5. First-time NCLEX-RN pass rate: measure of program quality or something else?

    Science.gov (United States)

    Taylor, Heidi; Loftin, Collette; Reyes, Helen

    2014-06-01

    The first-time NCLEX-RN(®) pass rate is considered by many to be the primary, if not sole, indicator of the quality of prelicensure nursing education programs. Used by state boards of nursing, educational program accreditors, and nursing faculty, the first-time NCLEX-RN pass rate influences important decisions about overall program quality, admission and progression policies, curricula, and teaching and learning practices. In this article, the authors call for a professional dialogue about the use of first-time pass rate (F-TPR) as an indicator of program quality, offer alternative methods for using the F-TPR as one measure of program quality, and suggest further research. One program's experience with low F-TPRs is offered as an exemplar of the unintended negative consequences that occur when the F-TPR is used as a sole criterion by a state board of nursing in judging a program's quality.

  6. Udvikling af dialogisk kompetence hos børn med CI

    DEFF Research Database (Denmark)

    Dammeyer, Jesper Herup; Carstensen, Susanne; Karlshøj, Bente;

    2011-01-01

    Der er relativ god viden om børn med CI’s sproglige udvikling, hvad angår sproglyde og ord. Derimod er der i den internationale forskning kun beskrevet meget lidt om den del af den sproglige udvikling, som ligger ud over sætningsniveauet. Denne artikel beskriver nogle af de resultater, der er...... fremkommet ved et fire år langt følgestudie af tre førskolebørn med CI. Børnenes sproglige udvikling er observeret og analyseret i forhold til dialogiske kompetencer. Resultaterne peger på, at børnene udvikler gode talesproglige kompetencer i løbet af den fireårige periode, men at børnene har brug for støtte...

  7. Solární vytápění

    OpenAIRE

    Kárl, Jiří

    2011-01-01

    Tato práce seznamuje se základními částmi solárních systémů a ukazuje na příkladu reálného rodinného domu, jak vypočítat návratnost investic vložených do solárního systému na rodinném domě. This work presents you a basic parts of solar systems and shows on example of real family house, how to count calculate return on investment in to solar system on family house. B

  8. Coulomb excitation of re-accelerated 208Rn and 206Po beams

    Directory of Open Access Journals (Sweden)

    Grahn T.

    2013-12-01

    Full Text Available In the present study, B(E2; 2+ → 0+ values have been measured in the 208Rn and 206Po nuclei through Coulomb excitation of re-accelerated radioactive beams in inverse kinematics at CERN-ISOLDE. The resulting B(E2; 2+ → 0+ in 208Rn is ∼ 0.08 e2b2. These nuclei lie in, or at the boundary of the region where seniority scheme should persist. However, contributions from collective excitations may be present when moving away from the N = 126 shell closure. To date, surprisingly little is known of the transition probabilities between the low-spin states in this region.

  9. A literature review of mentoring for RN-to-FNP transition.

    Science.gov (United States)

    Poronsky, Cathlin Buckingham

    2012-11-01

    Making the transition from RN to family nurse practitioner (FNP) can be challenging and stressful. The transition may begin during graduate school. As FNP students struggle to balance the multitude of academic, personal, and professional demands, they may also struggle with how to make the transition in role and practice. Nurse faculty may aid FNP students by mentoring them. However, information is limited regarding successful mentoring programs and faculty mentoring of FNP students. A literature review of mentoring was conducted, and findings are presented and discussed in this article, including recommendations for additional research. This information may assist faculty, students, and academic institutions seeking to better facilitate the RN-to-FNP transition during graduate school.

  10. Kan adoption hjælpe de glemte børn?

    DEFF Research Database (Denmark)

    Christoffersen, Mogens

    2008-01-01

    Er adoption bedre end opvækst på en moderne døgninstitution eller hos en plejefamilie? I et velfærdssamfund som det danske med lang tradition for fokus på, hvordan det går de anbragte børn, er dette et centralt spørgsmål.......Er adoption bedre end opvækst på en moderne døgninstitution eller hos en plejefamilie? I et velfærdssamfund som det danske med lang tradition for fokus på, hvordan det går de anbragte børn, er dette et centralt spørgsmål....

  11. A 'delayed' counting method to determine indoor Rn-222 levels indirectly

    CERN Document Server

    Iannopollo, V; Trimarchi, M; Tripepi, M G; Vermiglio, G

    2001-01-01

    A new indirect and 'delayed' way is presented to determine indoor concentration of Rn-222 by best-fitting methods. If a rapid knowledge of Rn-222 levels is required and if a detection system is not available in situ, it is possible to obtain concentration of radioactive gas by determining of 'delayed' counts of Po-214. The 'delay' time consists of two or three hours. The method is based on the use of cellulose filters for particulate collection and on the analysis of samples by alpha spectroscopy. It is also possible to obtain concentrations of short-lived radon daughters Po-218, Pb-214, Bi-214, which are very important quantities in a medical framework.

  12. Monitoring 222 Rn in soil gas of Garfagnana (Tuscany aimed at earthquake prediction

    Directory of Open Access Journals (Sweden)

    A. Pescia

    1994-06-01

    Full Text Available 222 Rn concentration in soil gas from nineteen stations of Garfagnana valley (Central ltaly was continuously monitored from December 1990 to May 1993. 222 Rn activity was measured by solid state nuclear track detector (SSNTD. Tracks detected by spark-counter and by optical microscope were proportionally constant for track densities lower than 2500 tracks/cm2. Since time variations in track density both for the same monitoring station and for different stations are significanfly higher than fluctuations in the experimental conditions, the validity of spark-counter for radon activity measurements is confirmed. Data collected in the period of monitoring indicate significant seasonal variations in radon concentration for every monitoring station. Moreover, the soil characteristics play an important role in determining the observed patterns. No significant correlation could be found between radon emission and seismicity. However, it should be noted that no earthquake with a magnitude higher than 3.5 occurred in Garfagnana during the monitoring period.

  13. Low-level measurements of Ra-226/Rn-222 by pulse ionization chambers

    Science.gov (United States)

    El-Daoushy, Fand; Garcia-Tenorio, Rafael

    1988-10-01

    Characteristics of two ionization chambers have been studied and the chambers utilized for 226Ra/ 222Rn measurements for more than ten years. The results obtained show that coating of internal surfaces with a pure and thin Ag-layer enhances the background of ionization chambers in spite of some improvements at the early stages of operation. In addition to previously known parameters influencing the accuracy in routine measurements, new correction factors are suggested. 226Ra impurities in the body of ionization chambers are found to act not only as a permanent, but also as a temperature-dependent source of background. Earlier accuracies of 226Ra/ 222Rn measurements have been considerably improved by assuring long-term mechanical and thermal stability of the ionization chambers.

  14. Overview of Hazard Assessment and Emergency Planning Software of Use to RN First Responders

    Energy Technology Data Exchange (ETDEWEB)

    Waller, E; Millage, K; Blakely, W F; Ross, J A; Mercier, J R; Sandgren, D J; Levine, I H; Dickerson, W E; Nemhauser, J B; Nasstrom, J S; Sugiyama, G; Homann, S; Buddemeier, B R; Curling, C A; Disraelly, D S

    2008-08-26

    There are numerous software tools available for field deployment, reach-back, training and planning use in the event of a radiological or nuclear (RN) terrorist event. Specialized software tools used by CBRNe responders can increase information available and the speed and accuracy of the response, thereby ensuring that radiation doses to responders, receivers, and the general public are kept as low as reasonably achievable. Software designed to provide health care providers with assistance in selecting appropriate countermeasures or therapeutic interventions in a timely fashion can improve the potential for positive patient outcome. This paper reviews various software applications of relevance to radiological and nuclear (RN) events that are currently in use by first responders, emergency planners, medical receivers, and criminal investigators.

  15. Educar con significado o con sentido

    Directory of Open Access Journals (Sweden)

    José Joaquín García García

    2017-01-01

    Full Text Available Hoy día, tres tendencias influyen directamente en la conformación de la escuela. En primer lugar, el afán de encontrar la esencia de todo encumbró a la razón e hizo de la racionalidad el único valor a defender en las aulas. En segundo lugar, el sistema capitalista hizo lo mismo con aquello que tiene valor de uso y valor de cambio, es decir, con la mercancía, validando solo lo que puede tener una utilidad económica conocida o posible. Esto convirtió a la educación en un proceso para certificar y ganar dinero, desdibujando así su intención de formar personas. Finalmente, la visión masculina y eurocéntrica con su locura por quererlo dominar todo, y de pensar que el hombre era el dueño del planeta e inclusive la vida y el destino de los otros hombres, mutiló culturas y eliminó a la naturaleza de los currículums en los centros educativos.

  16. con turbinas de disco con paletas planas

    Directory of Open Access Journals (Sweden)

    D. García-Cortés

    2006-01-01

    Full Text Available Las turbinas de disco con paletas planas son los impelentes de flujo radial más ampliamente utilizados en la industria por constituir el impelente que forma parte de la configuración geométrica estándar para obtener este patrón de flujo en los tanques agitados. El estudio detallado de la hidrodinámica en este sistema de agitación es fundamental para continuar obteniendo conocimientos básicos imprescindibles para la síntesis y la modelación matemática de diferentes procesos complejos que se llevan a cabo en los tanques agitados, por ejemplo, la cristalización esférica. El propósito de este artículo es hacer una revisión de la información publicada sobre la hidrodinámica y la modelación matemática de la dinámica de fluidos en los tanques agitados con turbinas de disco con paletas planas y señalar los avances logrados en cada uno de los aspectos abordados y aquellos en los cuales es necesario seguir investigando.

  17. Invariant Mean-Value Property and M-Harmonicity in the Unit Ball of Rn

    Institute of Scientific and Technical Information of China (English)

    Cong Wen LIU; Ji Huai SHI

    2003-01-01

    In 1993, Ahern, Flores and Rudin showed that, if f is integrable over the unit ball BnC ofCn and satisfies ∫Bnc foψdv=f(ψ(0)) for every ψ∈ Aut(BnC), then f is M-harmonic if and only if n ≤ 11. The present paper is about ananalogous question in the context of the unit ball Bn of Rn as well as in the weighted setting.

  18. Matérn's hard core models of types I and II with arbitrary compact grains

    DEFF Research Database (Denmark)

    Kiderlen, Markus; Hörig, Mario

    Matérn's classical hard core models can be interpreted as models obtained from a stationary marked Poisson process by dependent thinning. The marks are balls of fixed radius, and a point is retained when its associated ball does not hit any other balls (type I) or when its random birth time is st...... of this model with the process of intact grains of the dead leaves model and the Stienen model leads to analogous results for the latter....

  19. Nurse forecasting in Europe (RN4CAST): Rationale, design and methodology

    OpenAIRE

    Scott, Anne

    2011-01-01

    Background: Current human resources planning models in nursing are unreliable and ineffective as they consider volumes, but ignore effects on quality in patient care. The project RN4CAST aims innovative forecasting methods by addressing not only volumes, but quality of nursing staff as well as quality of patient care. Methods/Design: A multi-country, multilevel cross-sectional design is used to obtain important unmeasured factors in forecasting models including how features of hospital wo...

  20. Equal Area Laws and Latent Heat for d-Dimensional RN-AdS Black Hole

    Directory of Open Access Journals (Sweden)

    Li-Chun Zhang

    2014-01-01

    Full Text Available We study the equal area laws of d-dimensional RN-AdS black hole. We choose two kinds of phase diagrams, P-V and T-S. We employ the equal area laws to find an isobar which is the real two-phase coexistence line. Our calculation is much simpler to derive the critical value of the thermodynamic quantities. According to the thermodynamic quantities, we also study the latent heat of the black hole.

  1. Measurements of indoor 222RN activity in dwellings and workplaces of Curitiba (Brazil)

    Science.gov (United States)

    Corrêa, Janine N.; Paschuk, Sergei A.; Del Claro, Flávia; Kappke, Jaqueline; Perna, Allan F. N.; Schelin, Hugo R.; Denyak, Valeriy

    2014-11-01

    The present work describes the results of systematic measurements of radon (222Rn) in residential environments and workplaces in the Metropolitan Region of Curitiba (Paraná State, Brazil) during the period 2004-2012. For radon in air activity measurements, polycarbonate Track Etch Detectors CR-39, mounted in diffusion chambers protected by borosilicate glass fiber filters, were used. After being exposed in air, the CR-39 detectors were submitted to a chemical etching in a 6.25 M NaOH solution at 70 °C for 14 h. The alpha particle tracks were identified and manually counted with an optical microscope, and with the results of previously performed calibrations, the indoor activity concentration of 222Rn was calculated. The calibration of CR-39 and the alpha particle tracks chemical development procedures were performed in collaboration the National Institute of Radiological Sciences (NIRS, Japan). The major part of indoor 222Rn concentration in residences was found to be below 100 Bq/m3. In the case of working places, all measurements of 222Rn concentrations were below 100 Bq/m3. These values are considered within the limits set by international regulatory agencies, such as the US EPA and ICRP, which adopt up to 148 and 300 Bq/m3 as upper values for the reference levels for radon gas activity in dwellings, respectively. The latest value of 300 Bq/m3 for radon activity in air is proposed by ICRP considering the upper value for the individual dose reference level for radon exposure of 10 mSv/yr.

  2. Use of focus groups to elicit student perception of NCLEX-RN preparation.

    Science.gov (United States)

    Pabst, Mary K; Strom, Jan; Reiss, Penny J

    2010-09-01

    Focus groups are an appropriate data collection method when one wants to listen to and gather information from a homogenous group of participants. Faculty members from a baccalaureate program used this technique to learn more about their students' perceptions of NCLEX-RN preparation practices. Themes were identified that could lead to more controlled study and ways to effectively remediate those at risk for failure.

  3. Shell model description of low-lying states in Po and Rn isotopes

    Science.gov (United States)

    Higashiyama, Koji; Yoshinaga, Naotaka

    2014-03-01

    Nuclear structure of the Po and Rn isotopes is theoretically studied in terms of the spherical shell model with the monopole- and quadrupole-pairing plus quadrupole-quadrupole effective interaction. The experimental energy levels of low-lying states are well reproduced. The shell model results are examined in detail in a pair-truncated shell model. The analysis reveals the alignment of two protons in the 0h9/2 orbital at spin 8.

  4. Shell model description of low-lying states in Po and Rn isotopes

    Directory of Open Access Journals (Sweden)

    Higashiyama Koji

    2014-03-01

    Full Text Available Nuclear structure of the Po and Rn isotopes is theoretically studied in terms of the spherical shell model with the monopole- and quadrupole-pairing plus quadrupole-quadrupole effective interaction. The experimental energy levels of low-lying states are well reproduced. The shell model results are examined in detail in a pair-truncated shell model. The analysis reveals the alignment of two protons in the 0h9/2 orbital at spin 8.

  5. Writing for publication in an RN to Baccalaureate program: an exercise in critical thinking.

    Science.gov (United States)

    Davidhizar, R; Bechtel, G A; Tiller, C M

    1999-01-01

    More than 35,700 registered nurses are currently enrolled in an RN to Baccalaureate completion program (I). The demand for these graduates is expected to continue, along with an increased demand for community-based educational programs. Many of these students have significant clinical experience and expertise. Nursing faculty are challenged to develop learning experiences and program outcomes that enhance their professional skills and add to their expertise.

  6. Når børn lærer sprog

    DEFF Research Database (Denmark)

    Bleses, Dorthe; Højen, Anders

    Når børn lærer sprog, bryder de verdens måske mest komplicerede kode. De ligger lige så stille i vuggen eller sidder på bagsædet af bilen og lytter opmærksomt til de lyde der dannes når andre mennesker sender en luftstrøm forbi taleorganerne. Blot ved at analysere disse lyde udleder de hele sprog...

  7. Time Decay Rates of the Isotropic Non-Newtonian Flows in Rn

    Institute of Scientific and Technical Information of China (English)

    Bo-Qing Dong

    2007-01-01

    This paper is concerned with time decay rates for weak solutions to a class system of isotropic incompressible non-Newtonian fluid motion in Rn. With the use of the spectral decomposition methods of Stokes operator, the optimal decay estimates of weak solutions in L2 norm are derived under the different conditions on the initial velocity. Moreover, the error estimates of the difference between non-Newtonian flow and Navier-Stokes flow are also investigated.

  8. rn med handicap på døgninstitution

    DEFF Research Database (Denmark)

    Jydebjerg, Camilla

    Det kan væres svært at være forældre til børn på døgninstitution. Forældrene risikerer at miste retten til hjælpemidler og handicapkompenserende ydelser, fordi deres barn ikke længere bor hjemme. Undersøgelsen samler erfaringer og viden om problemet fra 260 forældre og forstandere og afdelingsled...

  9. Drænbehandling af recidiverende otitis media hos børn

    DEFF Research Database (Denmark)

    Lous, Jørgen; Trankjær, Christina Ryborg; Thomsen, Janus Laust

    2010-01-01

    I et nyligt publiceret Cochrane-review om effekten af indsættelse af trommehindedræn hos børn med recidiverende akut otitis media (RAOM) fandt man kun to studier, som opfyldte inklusionskriterierne. De inkluderede studier påviste en absolut risikoreduktion for at få AOM på 0,34 på seks måneder. Ved...

  10. Eesti Disaini muna BRUNO said Martin Pärn ja Annike Laigo / Urve Eslas

    Index Scriptorium Estoniae

    Eslas, Urve

    2006-01-01

    Eesti Disainerite Liidu auhinnad parima tootedisaini ja parima disainiprojekti eest pälvisid Martin Pärn büroomööbli seeria "Krog" eest ning Annike Laigo isehelenduva vaiba "Jaaniuss" eest. Samal teemal ka lk. 1 "Büroomööbel ja helendav vaip võitsid disaini-BRUNO". Eesti Disaini auhinna nominentide näitus on avatud Disaini- ja Arhitektuurigaleriis

  11. Attitudes of RN-to-BSN students regarding teaching strategies utilized in online courses.

    Science.gov (United States)

    Abell, Cathy; Williams, Deborah

    2014-09-01

    In this descriptive study, researchers examined RN-to-BSN students' attitudes regarding different teaching/learning strategies incorporated in courses offered utilizing the online delivery format. A semantic differential scale was used to measure attitudes regarding the use of wikis, podcasts, video capture, talking PowerPoint, and discussion boards. The results indicated that students had the most favorable attitude toward tegrity lectures as a teaching strategy. This was followed by talking PowerPoint lectures and discussion board.

  12. A NOTE ON SINGULAR VALUE DECOMPOSITION FOR RADON TRANSFORM IN Rn

    Institute of Scientific and Technical Information of China (English)

    王金平; 杜金元

    2002-01-01

    The singular value decomposition is derived when the Radon transform is restricted to functions which are square integrable on the unit ball in Rn with respect to the weight Wλ(x). It fulfilles mainly by means of the projection-slice theorem. The range of the Radon transform is spanned by products of Gegenbauer polynomials and spherical harmonics. The inverse transform of the those basis functions are given. This immediately leads to an inversion formula by series expansion and range characterizations.

  13. Eesti Disaini muna BRUNO said Martin Pärn ja Annike Laigo / Urve Eslas

    Index Scriptorium Estoniae

    Eslas, Urve

    2006-01-01

    Eesti Disainerite Liidu auhinnad parima tootedisaini ja parima disainiprojekti eest pälvisid Martin Pärn büroomööbli seeria "Krog" eest ning Annike Laigo isehelenduva vaiba "Jaaniuss" eest. Samal teemal ka lk. 1 "Büroomööbel ja helendav vaip võitsid disaini-BRUNO". Eesti Disaini auhinna nominentide näitus on avatud Disaini- ja Arhitektuurigaleriis

  14. Hvilken evidens er der for behandling af depression hos børn og unge med kognitiv terapi?

    DEFF Research Database (Denmark)

    Sørensen, Merete Juul; Thomsen, Per Hove

    2007-01-01

    Depression hos børn og unge er relativt hyppigt forekommende og kan have svære konsekvenser. Den specifikke antidepressive behandling kan være psykoterapeutisk eller medikamentel. I artiklen gennemgås på baggrund af systematisk litteratursøgning den videnskabelige evidens for effekten af kognitiv...... adfærdsterapi hos børn og unge med depression....

  15. Numerical simulation of {sup 222}RN exhalation from phosphogypsum building blocks and accumulation inside a closed chamber

    Energy Technology Data Exchange (ETDEWEB)

    Rabi Junior, Jose A. [Sao Paulo Univ., Pirassununga, SP (Brazil). Faculdade de Zootecnia e Engenharia de Alimentos]. E-mail: jrabi@fzea.usp.br; Silva, Nivaldo C. da [Pontificia Univ. Catolica de Minas Gerais, Pocos de Caldas, MG (Brazil)]|[Comissao Nacional de Energia Nuclear (CNEN), Pocos de Caldas, MG (Brazil). Laboratorio]. E-mail: ncsilva@pucpcaldas.br; ncsilva@cnen.gov.br

    2005-07-01

    Zero-order models for {sup 222}Rn exhalation from phosphogypsum-bearing building materials and its transient indoor accumulation assume uniform distribution inside the enclosure. Conversely, this paper numerically simulates a transient two-dimensional {sup 222}Rn accumulation in a test chamber that contains a phosphogypsum board at one wall. Results show that above hypothesis might be oversimplified when spatial dependence is considered. (author)

  16. ACOLHIMENTO: OPINIÃO DE PUÉRPERAS EM SISTEMA DE ALOJAMENTO CONJUNTO EM UMA MATERNIDADE PÚBLICA DE NATAL/RN

    Directory of Open Access Journals (Sweden)

    REJANE MARIE BARBOSA DAVIM

    2008-01-01

    Full Text Available El estudio tuvo como objetivo identificar la opinión de parturientas del sistema de alojamiento conjunto en una maternidad pública de Natal/RN, enfocando la acogida proporcionada por los profesionales de salud. Se trata de un estudio descriptivo con enfoque cualitativo. Los datos fueron recogidos por medio de una entrevista durante el período de dos meses del año 2007, constando d e dos partes: identificación de las parturientas , y una cuestión orientadora:”¿cuál es su opinión sobre la acogida proporcionada por los profesionales de salud de esta maternidad? Se constató que hubo satisfacción con la acogida proporcionada por los profesionales de salud y por las informaciones sobre los procedimientos a que serían sometidas. Sin embargo, se observó que la falta de un acompañante en el alojamiento conjunto fue considerada punto negativo por las parturientas. Se concluye que las interacciones personales son esenciales para auxiliar a los profesionales y clientes a recorrer la experiencia de la acogida a nivel hospital ario.

  17. An equal area law for holographic entanglement entropy of the AdS-RN black hole

    Science.gov (United States)

    Nguyen, Phuc H.

    2015-12-01

    The Anti-de Sitter-Reissner-Nordström (AdS-RN) black hole in the canonical ensemble undergoes a phase transition similar to the liquid-gas phase transition, i.e. the isocharges on the entropy-temperature plane develop an unstable branch when the charge is smaller than a critical value. It was later discovered that the isocharges on the entanglement entropy -temperature plane also exhibit the same van der Waals-like structure, for spherical entangling regions. In this paper, we present numerical results which sharpen this similarity between entanglement entropy and black hole entropy, by showing that both of these entropies obey Maxwell's equal area law to an accuracy of around 1%. Moreover, we checked this for a wide range of size of the spherical entangling region, and the equal area law holds independently of the size. We also checked the equal area law for AdS-RN in 4 and 5 dimensions, so the conclusion is not specific to a particular dimension. Finally, we repeated the same procedure for a similar, van der Waals-like transition of the dyonic black hole in AdS in a mixed ensemble (fixed electric potential and fixed magnetic charge), and showed that the equal area law is not valid in this case. Thus the equal area law for entanglement entropy seems to be specific to the AdS-RN background.

  18. Predicting NCLEX-RN success with the HESI Exit Exam: eighth validity study.

    Science.gov (United States)

    Langford, Rae; Young, Anne

    2013-01-01

    Increasingly, Elsevier's HESI Exit Exam (E(2)) is being used to assess students' readiness for the National Council Licensure Examination for Registered Nurses (NCLEX-RN). Seven previously conducted validity studies indicate that the E(2) is 96.36%-99.16% accurate in predicting NCLEX-RN success. Findings of this eighth validity study, which also investigated the predictive accuracy of repeat testing with parallel versions of the E(2), indicated that the E(2) is highly accurate (94.93%-98.32%) in predicting NCLEX-RN success for the initial testing and 2 retests. Of the 66 participating nursing programs, deans and directors from 43 (65.15%) of the programs reported implementing a policy that used E(2) scores as a benchmark for remediation. A score of 850 was the most common E(2) benchmark designated by faculties, and students who failed to achieve the faculty-designated E(2) benchmark score were required to retest with a parallel version of the E(2). Remediation resources used to assist students in achieving faculty-designated E(2) benchmark scores varied widely, with many programs employing multiple remediation methods.

  19. Measurements of 222Rn activity concentration in domestic water sources in Penang, northern peninsular Malaysia.

    Science.gov (United States)

    Muhammad, B G; Jaafar, M S; Azhar, A R; Akpa, T C

    2012-04-01

    Measurements of (222)Rn activity concentration were carried out in 39 samples collected from the domestic and drinking water sources used in the island and mainland of Penang, northern peninsular, Malaysia. The measured activity concentrations ranged from 7.49 to 26.25 Bq l(-1), 0.49 to 9.72 Bq l(-1) and 0.58 to 2.54 Bq l(-1) in the raw, treated and bottled water samples collected, respectively. This indicated relatively high radon concentrations compared with that from other parts of the world, which still falls below the WHO recommended treatment level of 100 Bq l(-1). From this data, the age-dependent associated committed effective doses due to the ingestion of (222)Rn as a consequence of direct consumption of drinking water were calculated. The committed effective doses from (222)Rn resulting from 1 y's consumption of these water were estimated to range from 0.003 to 0.048, 0.001 to 0.018 and 0.002 to 0.023 mSv y(-1), for age groups 0-1, 2-16 and >16 y, respectively.

  20. Prediction of {sup 222} Rn exhalation rates from phosphogypsum based stacks. Part I: parametric mathematical modeling

    Energy Technology Data Exchange (ETDEWEB)

    Rabi, Jose A. [Pontificia Univ. Catolica de Minas Gerais, Pocos de Caldas, MG (Brazil). Faculdade de Engenharia Civil]. E-mail: jrabi@pucpcaldas.br; Mohamad, Abdulmajeed A. [The University of Calgary, Alberta (Canada). Faculty of Engineering. Dept. of Mechanical and Manufacturing Engineering]. E-mail: amohamad@enme.ucalgary.ca

    2004-07-01

    Radon-222 is a radionuclide exhaled from phosphogypsum by-produced at phosphate fertilizer industries. Alternative large-scale application of this waste may indicate a material substitute for civil engineering provided that environmental issues concerning its disposal and management are overcome. The first part of this paper outlines a steady-state two-dimensional model for {sup 222}Rn transport through porous media, inside which emanation (source term) and decay (sink term) exist. Boussinesq approach is evoked for the laminar buoyancy-driven interstitial air flow, which is also modeled according to Darcy-Brinkman formulation. In order to account for simultaneous effects of entailed physical parameters, governing equations are cast into dimensionless form. Apart from usual controlling parameters like Reynolds, Prandtl, Schmidt, Grashof and Darcy numbers, three unconventional dimensionless groups are put forward. Having in mind {sup 222}Rn transport in phosphogypsum-bearing porous media, the physical meaning of those newly introduced parameters and representative values for the involved physical parameters are presented. A limiting diffusion-dominated scenario is addressed, for which an analytical solution is deduced for boundary conditions including an impermeable phosphogypsum stack base and a non-zero fixed concentration activity at the stack top. Accordingly, an expression for the average Sherwood number corresponding to the normalized {sup 222}Rn exhalation rate is presented.

  1. Determination of 210Pb and 222Rn in ground water of Okinawa Island

    Science.gov (United States)

    Ito, M.; Tanahara, A.

    2012-12-01

    In this study, we developed the method of 210Pb measurement from a large amount of ground water. The chelating resin (NOBIAS CHELATE-PA1; Hitachi High-technology) column combined with the ion-exchange resin (DOWEX-88; Dow Chemical Company) column were used for pre-treatment of 210Pb from ground water of 20 litter. It should be mentioned that this determination procedure is simple, fast, and give high recovery (more than 80 %). It avoids precipitation and large consumption of chemicals. Finally 210Pb was precipitated as PbSO4 and determined with low background 2πgas flow counter. 210Pb concentration in ground water of Okinawa Island ranged from 1.40-16.7 mBq/L. We also found that the organo-210Pb complex which could not be detected by this method was involved in some water samples. By increasing the column radius and the resin mass, while keeping a constant height of the resin column, it is possible to additionally increase the flow rate and accelerate the isolation procedure. 222Rn was determined by the direct method. The emulsion scintillation cocktail (10 mL) and water sample (10 mL) were put into a vial. After shaking and stand for 200 min, 222Rn was counted by LSC for 120 min. 222Rn concentration in ground water of Okinawa Island ranged from 0.71-14.0 Bq/L.

  2. Mr Bjørn Haugstad, State Secretary, Ministry of Education and Research, Norway

    CERN Document Server

    Maximilien Brice

    2003-01-01

    Photos 01,02: Mr Bjørn Haugstad, State Secretary, Ministry of Education and Research, Norway signing the guest book; standing, Dr Carlo Wyss Photo 03: Luncheon in honour of Mr Bjørn Haugstad, State Secretary, Ministry of Education and Research, Norway, April 2003. Around the table, from left to right: State Secretary Haugstad (standing); Prof. Cecilia Jarlskog, Adviser to the Director-General for Member State Relations; Mr Morten Knutsen, CERN staff - Purchase; Mr Jens Vigen, CERN staff, Library and Norwegian Contact; Prof. Steinar Stapnes, Prof. Univ. of Oslo and Physicist in the ATLAS experiment (in profile), Dr Carlo Wyss, Director for Accelerators (standing), Dr Leif Westgaard, Senior Adviser, Research Council of Norway, CERN Delegate. Photo 04: Luncheon in honour of Mr Bjørn Haugstad, State Secretary, Ministry of Education and Research, Norway, April 2003. Around the table, from left to right: State Secretary Haugstad (standing); Mr Jens Vigen, CERN staff, Library and Norwegian Contact; Prof. Steinar ...

  3. Measurements of soil and canopy exchange rates in the Amazon rain forest using Rn-222

    Science.gov (United States)

    Trumbore, S. E.; Keller, M.; Wofsy, S. C.; Da Costa, J. M.

    1990-01-01

    Measurements were taken of the emission of Rn-222 from Amazon forest rocks and soils and used as a tracer of ventilation of the forest canopy layer at night. It was determined that the greatest resistance to transfer of trace gases from the soil to the atmosphere lies in the soil air space. Profiles of Rn-222 and CO2 showed steepest concentration gradients in the layer between 0 and 3 m above soil surface. Aerodynamic resistances calculated for this layer from Rn-222 and CO2 varied from 1.6 to 18 s/cm, with greater resistance during the afternoon than at night. The resistance to exchange with air from the entire 41 m layer below the canopy averaged 4.8 s/cm during 13 nights of CO2 profiles. The calculated average time to flush the layer below 41 m is 5.5 hr, and it is concluded that this indicates that significant exchange occurs despite nocturnal stratification.

  4. A class of Matérn-like covariance functions for smooth processes on a sphere

    KAUST Repository

    Jeong, Jaehong

    2015-02-01

    © 2014 Elsevier Ltd. There have been noticeable advancements in developing parametric covariance models for spatial and spatio-temporal data with various applications to environmental problems. However, literature on covariance models for processes defined on the surface of a sphere with great circle distance as a distance metric is still sparse, due to its mathematical difficulties. It is known that the popular Matérn covariance function, with smoothness parameter greater than 0.5, is not valid for processes on the surface of a sphere with great circle distance. We introduce an approach to produce Matérn-like covariance functions for smooth processes on the surface of a sphere that are valid with great circle distance. The resulting model is isotropic and positive definite on the surface of a sphere with great circle distance, with a natural extension for nonstationarity case. We present extensive numerical comparisons of our model, with a Matérn covariance model using great circle distance as well as chordal distance. We apply our new covariance model class to sea level pressure data, known to be smooth compared to other climate variables, from the CMIP5 climate model outputs.

  5. The Central and Eastern European Earthquake Research Network - CE3RN

    Science.gov (United States)

    Bragato, Pier Luigi; Costa, Giovanni; Gallo, Antonella; Gosar, Andrej; Horn, Nikolaus; Lenhardt, Wolfgang; Mucciarelli, Marco; Pesaresi, Damiano; Steiner, Rudolf; Suhadolc, Peter; Tiberi, Lara; Živčić, Mladen; Zoppé, Giuliana

    2014-05-01

    The region of the Central and Eastern Europe is an area characterised by a relatively high seismicity. The active seismogenic structures and the related potentially destructive events are located in the proximity of the political boundaries between several countries existing in the area. An example is the seismic region between the NE Italy (FVG, Trentino-Alto Adige and Veneto), Austria (Tyrol, Carinthia) and Slovenia. So when a destructive earthquake occurs in the area, all the three countries are involved. In the year 2001 the Agencija Republike Slovenije za Okolje (ARSO) in Slovenia, the Department of Mathematics and Geoscience of the University of Trieste (DMG), the OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale) in Italy and the Zentralanstalt für Meteorologie und Geodynamik (ZAMG) in Austria signed an agreement for the real-time seismological data exchange in the Southeastern Alps region. Soon after the Interreg IIIa Italia-Austria projects "Trans-National Seismological Networks in the South-Eastern Alps" and "FASTLINK" started. The main goal of these projects was the creation of a transfrontier network for the common seismic monitoring of the region for scientific and civil defense purposes. During these years the high quality data recorded by the transfrontier network has been used, by the involved institutions, for their scientific research, for institutional activities and for the civil defense services. Several common international projects have been realized with success. The instrumentation has been continuously upgraded, the installations quality improved as well as the data transmission efficiency. In the 2013 ARSO, DMG, OGS and ZAMG decided to name the cooperative network "Central and Eastern European Earthquake Research Network - CE3RN". The national/regional seismic networks actually involved in the CE3RN network are: • Austrian national BB network (ZAMG - OE) • Friuli Veneto SP network (OGS - FV) • Friuli VG

  6. Factors Controlling the Groundwater Transport of U, Th, Ra, and Rn

    Indian Academy of Sciences (India)

    A Tricca; D Porcelli; G J Wasserburg

    2000-03-01

    A model for the groundwater transport of naturally occurring U, Th, Ra, and Rn nuclides in the 238U and 232Th decay series is discussed. The model developed here takes into account transport by advection and the physico-chemical processes of weathering, decay, -recoil, and sorption at the water-rock interface. It describes the evolution along a flowline of the activities of the 238U and 232Th decay series nuclides in groundwater. Simple sets of relationships governing the activities of the various species in solution are derived, and these can be used both to calculate effective retardation factors and to interpret groundwater data. For the activities of each nuclide, a general solution to the transport equation has been obtained, which shows that the activities reach a constant value after a distance $\\bar{x}_i$, characteristic of each nuclide. Where $\\bar{x}_i$ is much longer than the aquifer length, (for 238U, 234U, and 232Th), the activities grow linearly with distance. Where $\\bar{x}_i$ is short compared to the aquifer length, (for 234Th, 230Th, 228Th, 228Ra, and 224Ra), the activities rapidly reach a constant or quasi-constant activity value. For 226Ra and 222Rn, the limiting activity is reached after 1 km. High 234U values (proportional to the ratio 234Th/W238U) can be obtained through high recoil fraction and/or low weathering rates. The activity ratios 230Th/232Th, 228Ra/226Ra and 224Ra/226Ra have been considered in the cases where either weathering or recoil is the predominant process of input from the mineral grain. Typical values for weathering rates and recoil fractions for a sandy aquifer indicate that recoil is the dominant process for Th isotopic ratios in the water. Measured data for Ra isotope activity ratios indicate that recoil is the process generally controlling the Ra isotopic composition in water. Higher isotopic ratios can be explained by different desorption kinetics of Ra. However, the model does not provide an explanation for 228Ra

  7. Investigando con personas con dificultades de aprendizaje

    Directory of Open Access Journals (Sweden)

    Borja González Luna

    2013-12-01

    Full Text Available El artículo muestra los orígenes de lo que Walmsley (2008 denomina «investigación inclusiva». Para comprender qué se entiende por investigación inclusiva tenemos que remontarnos a los debates epistemológicos sobre las metodologías cuantitativas y cualitativas, acontecidos en la década de los 90, en torno a la revista Disability & Society. A partir de una síntesis de dichos debates, focalizados en el ámbito de la «discapacidad intelectual y del desarrollo», se exponen dos estrategias de colaboración con dicha población: a una aproximación etnográfica (de trabajo grupal, y b una aproximación biográfica (de trabajo individual. A continuación se esboza un posible diseño de trabajo de campo que intenta superar el paradigma cualitativo «clásico» con el objetivo de incluir a dicho colectivo más allá del rol de «sujetos de la investigación». Para finalizar se recoge el debate sobre la accesibilidad de los resultados de la investigación a los participantes en dichas investigaciones, y con ello la necesaria innovación en el ámbito de las «devoluciones» de los resultados, cuando se trata de incluir a personas que presentan limitaciones para la comprensión del lenguaje abstracto oral y/o escrito.

  8. Characterization of ceramics used in mass ceramic industry Goianinha/RN; Caracterizacao de massa ceramica utilizada em industria ceramica de Goianinha/RN

    Energy Technology Data Exchange (ETDEWEB)

    Sales Junior, J.C.C.; Nascimento, R.M. do; Andrade, J.C.S.; Saldanha, K.M., E-mail: jccalado@gmail.com [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil); Dutra, R.P.S. [Universidade Federal da Paraiba (UFPB), PB (Brazil). Laboratorio de Materiais Ceramicos

    2011-07-01

    The preparation of the the ceramic mass is one of the most important steps in the manufacture of ceramic products, since the characteristics of the raw materials used, and the proportions that they are added, directly influence the final properties of ceramic products and the operational conditions of processing. The objective of this paper is to present the results of the characterization of a ceramic mass used in the manufacture of sealing blocks by a red ceramic industry of the city of Goianinha / RN. We analyzed the chemical and mineralogical composition; thermogravimetric and differential thermal analysis; granulometric analysis; evaluation of plasticity; and determining the technological properties of specimens used in test firing at 700, 900 and 1100 ° C. The results show that the ceramic body studied has characteristics that allow use in the manufacture of sealing blocks when burned at a temperature of 900 ° C. (author)

  9. Comparison of the quantulus 1220 and 300SL liquid scintillation counters for the analysis of {sup 222}Rn in groundwater

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hyun Cheol; Jung, Yoon Hee; Lee, Wanno; Choi, Guen Sik; Chung, Kun Ho; Kang, Mun Ja [Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2016-12-15

    Liquid scintillation counters (LSCs) are commonly used as an analytical method for detecting {sup 222}Rn in groundwater because they involve a simple sample pretreatment and allow high throughout with an autosampler. The Quantulus 1220 is the best-selling LSC in Korea, but its production was stopped. Recently, a new type of LSC, the 300SL, was introduced. In this study, the 300SL was compared with the Quantulus 1220 in order to evaluate the ability of each apparatus to detect {sup 222}Rn in groundwater. The Quantulus 1220 and 300SL were used to detect the presence of {sup 222}Rn. Radon gas was extracted from a groundwater sample using a water-immiscible cocktail in a LSC vial. The optimal analytical conditions for each LSC were determined using a {sup 222}Rn calibration source prepared with a {sup 226}Ra source. The optimal pulse shape analysis level for alpha and beta separation was 80 for the Quantulus 1220, and the corresponding pulse length index was 12 in the 300SL. The counting efficiency of the Quantulus 1220 for alpha emissions was similar to that of the 300SL, but the background count rate of the Quantulus 1220 was 10 times lower than that of the 300SL. The minimum detectable activity of the Quantulus 1220 was 0.08 Bq·L{sup -,} while that of the 300SL was 0.20 Bq·L{sup -1}. The analytical results regarding {sup 222}Rn in groundwater were less than 10% different between these LSCs. The 300SL is an LSC that is comparable to the Quantulus 1220 for detecting {sup 222}Rn in groundwater. Both LSCs can be applied to determine the levels of {sup 222}Rn in groundwater under the management of the Ministry of Environment.

  10. Development and applications of AlphaScreen-based FcRn binding assay to characterize monoclonal antibodies.

    Science.gov (United States)

    Wu, Qiang; Lee, Ho Young; Wong, Pin Yee; Jiang, Guoying; Gazzano-Santoro, Hélène

    2015-05-01

    IgG antibodies are important pharmaceutical molecules that successfully treat a variety of human diseases. The neonatal Fc receptor (FcRn) interacts with IgG Fc in the CH2-CH3 domain and plays a key role in IgG antibody homeostasis and affects its pharmacokinetic properties. An in vitro FcRn binding assay could be a highly valuable complementary tool to assess IgG antibody pharmacokinetics in IgG engineering and screening during the early optimization stage. In addition, it could be useful in biological characterization studies for antibody minor variants, process optimization, and comparability study at later stages of antibody development. Here we developed a homogeneous AlphaScreen-based FcRn assay to assess the binding of FcRn to IgG antibody in vitro. The assay is found to be accurate, precise, specific, and simple: donor beads loaded with FcRn and acceptor beads loaded with IgG1 mAb1 are mixed together with sample IgG at various dilutions and incubated for 1h before acquiring data with a fluorescence reader. This assay can run up to four samples per plate in 2h, which is time and cost effective compared with other FcRn binding methods such as cell-based fluorescent-activated cell scan and surface plasma resonance. Our data demonstrated that this assay is suitable for assessing the FcRn binding in vitro and provides a platform approach that can be readily applied to various antibodies. Copyright © 2015. Published by Elsevier B.V.

  11. Socialpædagogisk støtte til livsførelse - børn og unge uden for eget hjem

    DEFF Research Database (Denmark)

    Schwartz, Ida

    2013-01-01

    Formålet med en anbringelse er at give børn og unge i sociale nødsituationer samme muligheder for læring og udvikling som andre børn og unge. Den socialpædagogiske opgave er at understøtte, at anbragte børn og unge kommer videre i deres liv på trods af de vanskeligheder, de oplever. Forskning har...

  12. Fully human monoclonal antibody inhibitors of the neonatal Fc receptor (FcRn reduce circulating IgG in nonhuman primates

    Directory of Open Access Journals (Sweden)

    Andrew E Nixon

    2015-04-01

    Full Text Available The therapeutic management of antibody mediated autoimmune disease typically involves immunosuppressant and immunomodulatory strategies. However, perturbing the fundamental role of the neonatal Fc receptor (FcRn in salvaging IgG from lysosomal degradation provides a novel approach – depleting the body of pathogenic immunoglobulin by preventing IgG binding to FcRn and thereby increasing the rate of IgG catabolism. Herein, we describe the discovery and preclinical evaluation of fully human monoclonal IgG antibody inhibitors of FcRn. Using phage display, we identified several potent inhibitors of human FcRn in which binding to FcRn is pH independent, with over 1000-fold higher affinity for human FcRn than human IgG-Fc at pH 7.4. FcRn antagonism in vivo using a human-FcRn knock-in transgenic mouse model caused enhanced catabolism of exogenously administered human IgG. In non-human primates we observed reductions in endogenous circulating IgG of > 60% with no changes in albumin, IgM, or IgA. FcRn antagonism did not disrupt the ability of non-human primates to mount IgM/IgG primary and secondary immune responses. Interestingly, the therapeutic anti-FcRn antibodies had a short serum half-life but caused a prolonged reduction in IgG levels. This may be explained by the high affinity of the antibodies to FcRn at both acidic and neutral pH. These results provide important preclinical proof of concept data in support of FcRn antagonism as a novel approach to the treatment of antibody mediated autoimmune diseases.

  13. Application of {sup 222} Rn as a tracer of groundwater discharge at the coastal zone of Ubatuba, Sao Paulo State, Brazil; Aplicacao de {sup 222} Rn como tracador da descarga de aguas subterraneas na regiao costeira de Ubatuba, Sao Paulo

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Joselene de; Farias, Luciana A.; Mazzilli, Barbara P. [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil). Dept. de Radiometria Ambiental]. E-mail: jolivei@net.ipen.br; Burnett, William C. [Florida State Univ., Tallahassee, FL (United States); Saraiva, Elisabete de S.B. e; Furtado, Valdenir V. [Sao Paulo Univ., SP (Brazil). Inst. Oceanografico. Dept. de Oceanografia Quimica e Geologica

    2002-07-01

    Submarine groundwater discharge (SGD) and recycled seawater can provide chemical constituents to coastal zone, representing an important material flux pathway from land to sea in some areas. Geochemical tracers, like {sup 222} Rn and {sup 226} Ra, are advantageous for regional-scale assessment of SGD, because their signals represent values integrated through the water column that removes small-scale variations. These radionuclides are usually enriched in groundwater compared to seawater, can be measured at very low concentrations and are conservative. This work reports preliminary results of a study carried out in a series of small embayements of Ubatuba, Sao Paulo State-Brazil, covering latitudes between 23 deg 26{sup '}S and 23 deg 46{sup '}S and longitudes between 45 deg02{sup '}W and 45 deg 11{sup '}W. The main aims of this research were to set up an analytical method to assess {sup 222} Rn and {sup 226} Ra activities in seawater samples and to apply the excess {sup 222} Rn inventories obtained to estimate the submarine groundwater discharge. Measurements made during 2001/2002 included {sup 222} Rn and {sup 226} Ra in seawater, {sup 222} Rn in sediment, seawater and sediment physical properties. (author)

  14. ~(222)Rn/~(220)Rn子体测量方法与仪器比较%Comparison of Methods and Instruments for ~(222)Rn/~(220)Rn Progeny Measurement

    Institute of Scientific and Technical Information of China (English)

    刘艳阳; 尚兵; 周青芝; 武云云

    2012-01-01

    In this paper,comparisons were made among three methods of measurement(grab measurement,continuous measurement and integrating measurement) and also measurements of different instruments for a radon/thoron mixed chamber.Taking the optimized five-segment method as a comparison criterion,for the equilibrium-equivalent concentration of 222 Rn,measured results of BWLM and 24 h integrating detectors are 31% and 29% higher than the criterion,the results of Wlx, however,is 20% lower;and for 220 Rn progeny,the results of FJ414-142,KF-602D,BWLM and 24 h integrating detector are 86%,18%,28% and 36% higher than the criterion respectively,except that of WLx,which is 5% lower.For the differences shown,further research is needed.%在小型氡混合室对抓取测量、连续测量和累积测量三种方法及仪器测量结果进行了比较。与优化五段法相比,对于222Rn平衡当量浓度,BWLM连续测量仪和24 h累积探测器测量结果分别高出其31%和29%,Wlx仪偏低20%左右;对于220Rn平衡当量浓度,FJ414-142低本底闪烁探测器和KF-602D氡子体测量仪的测量结果分别偏高86%和18%,BWLM连续测量仪和24 h累积探测器测量结果分别偏高28%和36%,Wlx仪偏低5%左右。对于这几种方法和仪器测量数据之间的差异,须进一步研究。

  15. en pacientes con obesidad

    Directory of Open Access Journals (Sweden)

    Alcia María Alvarado Sánchez

    2005-01-01

    Full Text Available El objetivo de este estudio fue evaluar la eficacia de una intervención psicológica en pacientes con obesidad. Se utilizó un diseño cuasiexperimental con un grupo de estudio y un grupo control. Después de la intervención, se encontró una diferencia significativa en la reducción de peso entre los grupos. Asimismo, hubo un incremento significativo en la autoestima del grupo estudiado.

  16. Soledad con espectador

    OpenAIRE

    2011-01-01

    Este proyecto se plantea como una investigación de las posibilidades del dibujo como una herramienta para relatar una historia propia que se empapa de realidad y de ficción con el deseo de confundir al espectador y suscitarle preguntas. Para ello me he servido de mi propia imagen como personaje central. Éste se presenta duplicado, multiplicado, repetido e interactúa consigo mismo en un espacio imaginario con intención de simular aquello que se revela en el interior de la psique. Mi trabajo se...

  17. Funcionando con la computadora

    OpenAIRE

    Álvarez, Eduardo; Astiz, Mercedes; Medina, Perla; Montero, Y.; Oliver, María; Rocerau, M. Cristina; VALDEZ, Guillermo; Vecino, María; Vilanova, Silvia

    2004-01-01

    En este trabajo se presenta la descripción y resultados de la segunda etapa de una experiencia planteada con el objetivo de indagar la manera en que los alumnos determinan e interpretan funciones que explican situaciones problemáticas valiéndose de una nueva forma de trabajo en el aula: la utilización de la computadora como herramienta y un programa asistente matemático. La primera etapa consistió en el desarrollo de un taller optativo con alumnos de entre 14 y 15 años de edad del Colegio Dr....

  18. Giochiamo con i robot

    Directory of Open Access Journals (Sweden)

    Andrea Bonarini

    2009-01-01

    Full Text Available "Giochiamo con i robot" e' un laboratorio interattivo per grandi e piccini realizzato per l'edizione 2007 del Festival della Scienza di Genova. Lungo un percorso che va dalla telerobotica alla robotica evolutiva, il laboratorio sviluppa il tema di dare intelligenza ai robot. Questo percorso, le cui tappe sono le varie installazioni, si conclude nella "bottega" dove e' possibile costruire e programmare i propri robot o smontare e modificare quelli esposti durante il percorso didattico. I visitatori sono coinvolti in attivita' ludiche grazie alle quali possonoentrare in contatto con alcune delle idee potenti della robotica,

  19. Using {sup 222}Rn as a tracer of geodynamical processes in underground environments

    Energy Technology Data Exchange (ETDEWEB)

    Valladares, D.L. [GEA, Instituto de Matemática Aplicada San Luis (IMASL), Universidad Nacional de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas, Ej. de los Andes 950, D5700HHW San Luis (Argentina); Silva, A.A.R. da [Instituto de Física, Universidade de São Paulo, P.O.Box 66318, 05314-970, São Paulo, SP (Brazil); Serviço Especializado em Engenharia de Segurança e Medicina do Trabalho, Departamento de Saúde, Universidade de São Paulo, Rua da Reitoria, 109, 05508-900, São Paulo, SP (Brazil); Lacerda, T. [Instituto de Física, Universidade Federal Fluminense, Av. Gal Milton Tavares de Souza, s/n" o, Gragoatá, 24210-340, Niterói, RJ (Brazil); Anjos, R.M., E-mail: meigikos@if.uff.br [Instituto de Física, Universidade Federal Fluminense, Av. Gal Milton Tavares de Souza, s/n" o, Gragoatá, 24210-340, Niterói, RJ (Brazil); Rizzotto, M.; Velasco, H.; Rosas, J.P. de [GEA, Instituto de Matemática Aplicada San Luis (IMASL), Universidad Nacional de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas, Ej. de los Andes 950, D5700HHW San Luis (Argentina); Tognelli, G. [Departamento de Geología, Universidad Nacional de San Luis, Ej. de los Andes 950, D5700HHW San Luis (Argentina); and others

    2014-01-01

    Radon levels in two old mines in San Luis, Argentina, were measured and analyzed, with the aim to assess the potential use of this radioactive noble gas as a tracer of geological processes in underground environments. La Carolina gold mine and Los Cóndores tungsten mine are today used as tourism mines. CR-39 nuclear track detectors were used for this purpose. Measurements were performed during both winter and summer seasons. The findings show that in these environments, significant radon concentrations are subject to large seasonal fluctuations, due to the strong dependence on natural ventilation with the outside temperature variations. For both mines, higher concentration values of {sup 222}Rn were observed in summer than in winter; with an extreme ratio of 2.5 times between summer and winter seasons for Los Cóndores mine. The pattern of radon transport inside La Carolina mine revealed, contrary to what was believed, that this mine behaves as a system with two entrances located at different levels. However, this feature can only be observed in the winter season, when there is a marked difference between the inside and outside temperatures of the mine. In the case of Los Cóndores mine, the radon concentration pattern distribution is principally established by air current due to chimney-effect in summer and winter seasons. In both cases, the analyses of radon pattern distribution appear as a good method to trace air currents, and then localize unknown ducts, fissures or secondary tunnels in subterranean environments. - Highlights: • {sup 222}Rn levels in two old mines in San Luis, Argentina • CR-39 nuclear track detectors were used for this purpose • higher concentration values of {sup 222}Rn were observed in summer than in winter • radon pattern distribution appear as a good method to trace air currents • it localizes unknown ducts, fissures or secondary tunnels in subterranean environments.

  20. Measurement of (222)Rn by absorption in plastic scintillators and alpha/beta pulse shape discrimination.

    Science.gov (United States)

    Mitev, Krasimir K

    2016-04-01

    This work demonstrates that common plastic scintillators like BC-400, EJ-200 and SCSF-81 absorb radon and their scintillation pulse decay times are different for alpha- and beta-particles. This allows the application of pulse shape analysis for separation of the pulses of alpha- and beta-particles emitted by the absorbed radon and its progeny. It is shown that after pulse shape discrimination of beta-particles' pulses, the energy resolution of BC-400 and EJ-200 alpha spectra is sufficient to separate the peaks of (222)Rn, (218)Po and (214)Po and allows (222)Rn measurements that are unaffected by the presence of thoron ((220)Rn) in the environment. The alpha energy resolution of SCSF-81 in the experiments degrades due to imperfect collection of the light emitted inside the scintillating fibers. The experiments with plastic scintillation microspheres (PSM) confirm previous findings of other researchers that PSM have alpha-/beta-discrimination properties and show suitability for radon measurements. The diffusion length of radon in BC-400 and EJ-200 is determined. The pilot experiments show that the plastic scintillators are suitable for radon-in-soil-gas measurements. Overall, the results of this work suggest that it is possible to develop a new type of radon measurement instruments which employ absorption in plastic scintillators, pulse-shape discrimination and analysis of the alpha spectra. Such instruments can be very compact and can perform continuous, real-time radon measurements and thoron detection. They can find applications in various fields from radiation protection to earth sciences. Copyright © 2016 Elsevier Ltd. All rights reserved.

  1. Tratamiento sin antibióticos en recién nacidos febriles con pleocitosis del líquido cefalorraquídeo y presunta meningitis viral

    Directory of Open Access Journals (Sweden)

    Manuel Díaz Álvarez

    2011-03-01

    Full Text Available INTRODUCCIÓN. El objetivo de esta investigación fue presentar la experiencia en antibioticoterapia en recién nacidos (RN febriles con pleocitosis del líquido cefalorraquídeo (LCR y presunción médica de meningitis viral. MÉTODOS. Se realizó un estudio retrospectivo con 310 RN con diagnóstico de meningitis aséptica, ingresados en el Servicio de Neonatología del Hospital Pediátrico Universitario «Juan Manuel Márquez» entre 1992 y 2009. Se determinó, utilizando estadística descriptiva, la indicación o no de tratamiento antibiótico, momento y motivos de la indicación. RESULTADOS. Hubo 204 RN (65,8 % con meningitis aséptica que egresaron favorablemente sin haber recibido tratamiento antibiótico. En 106 RN (34,2 % se indicaron antibióticos (en 76 inmediatamente al diagnóstico de meningitis y en 30 casos, mediatamente por diversos motivos. Los motivos para tratamiento inmediato fueron principalmente los resultados del examen citoquímico del LCR muy semejantes a los de una meningitis de causa bacteriana y los antecedentes de fiebre elevada o persistente. En la indicación mediata el principal motivo fue la concurrencia de infección del tracto urinario. En los pacientes que nunca recibieron tratamiento antibiótico, la mediana de estadía hospitalaria fue de 4 días (intervalo intercuartil 3-5 días y para los que sí lo recibieron fue de 5 días (intervalo intercuartil 4-7 días (p < 0,0001. CONCLUSIONES. Es aconsejable revisar el enfoque de utilizar tratamiento antibiótico ante todo RN proveniente de la comunidad cuando se encuentra pleocitosis del LCR y se presume la existencia de una meningitis viral, siempre y cuando existan condiciones de vigilancia profesional calificada y continua, y un laboratorio de microbiología con recursos suficientes para respaldar una estrategia de tratamiento con uso racional de la antibioticoterapia.

  2. 222Rn calibrated mercury fluxes from terrestrial surface of southern Africa derived from observations at Cape Point, South Africa

    Directory of Open Access Journals (Sweden)

    F. Slemr

    2013-03-01

    Full Text Available Gaseous elemental mercury (GEM and 222Rn, a radioactive gas of primarily terrestrial origin with a half-life of 3.8 days, have been measured simultaneously at Cape Point, South Africa, since March 2007. Between March 2007 and December 2011 altogether 191 events with high 222Rn concentrations were identified. GEM correlated with 222Rn in 94 of the events and was constant during almost all the remaining events without significant correlation. The average GEM/222Rn emission ratio of all events including the non-significant ones was −0.0001 ± 0.0030 pg mBq−1, with 0.0030 pg mBq−1 being the standard error of the average. With an emission rate of 1.1 222Rn atoms cm−2 s−1 and a correction for the transport duration, this emission ratio corresponds to a radon calibrated flux of about −0.01 ng GEM m−2 h−1 with a standard error of ±0.34 ng GEM m−2 h−1 (n = 191. With wet deposition, which is not included in this estimate, the terrestrial surface of southern Africa seems to be a net mercury sink of about −1.01 ng m−2 h−1.

  3. Too Many, Too Few, or Just Right? Making Sense Of Conflicting RN Supply and Demand Forecasts.

    Science.gov (United States)

    Spetz, Joanne

    2015-01-01

    Forecasts of future supply and demand of health professionals are tools to guide policy, not a final statement about how the world will be in the future. Recent forecasts of RN supply and demand vary widely and are incredibly confusing for nurse leaders, nurse educators, and policymakers. To effectively incorporate forecasts into policy and planning, one must understand the structure of the forecasts and underlying assumptions. One should treat all forecasts cautiously, and use them as guides to policy rather than definitive future outcomes.

  4. From expert to novice: The unnerving transition from experienced RN to neophyte APN.

    Science.gov (United States)

    Forbes, Vashti Jude; Jessup, Anna Loomis

    2004-06-01

    Following analysis of a critical incident, we discuss role identity stressors during knowledge acquisition. Specifically, we examine one nurse's supposition that expert knowledge is automatically transferable despite having a different role expectation. We share the unexpectedly powerful and potentially ego-deflating experience of one advanced practice nurse (APN) student preparing for the challenge of transitioning from novice to expert as a new APN. However, the greater lesson learned was failing to appreciate the transition in role identity from expert to novice that one undergoes as a registered nurse (RN) to APN student.

  5. Constructing pairs of dual bandlimited frame wavelets in L^2(R^n)

    DEFF Research Database (Denmark)

    Lemvig, Jakob

    2012-01-01

    Given a real, expansive dilation matrix we prove that any bandlimited function ψ∈L2(Rn), for which the dilations of its Fourier transform form a partition of unity, generates a wavelet frame for certain translation lattices. Moreover, there exists a dual wavelet frame generated by a finite linear...... combination of dilations of ψ with explicitly given coefficients. The result allows a simple construction procedure for pairs of dual wavelet frames whose generators have compact support in the Fourier domain and desired time localization. The construction relies on a technical condition on ψ, and we exhibit...

  6. DERIVATIVES OF HARMONIC MIXED NORM AND BLOCH-TYPE SPACES IN THE UNIT BALL OF Rn

    Institute of Scientific and Technical Information of China (English)

    Tang Xiaomin; Hu Zhangjian; Lu Xiaofen

    2011-01-01

    Let H(B) be the set of all harmonic functions f on the unit ball B of Rn.For 0 < p,q ≤ ∞ and a normal weight φ, the mixed norm space Hp,q,φ(B) consists of all functions f in H(B) for which the mixed norm ||·||p,q,φ < ∞. In this article, we obtain some characterizations in terms of radial, tangential, and partial derivative norms in Hp,q,φ(B).The parallel results for the Bloch-type space are also obtained. As an application, the analogous problems for polyharmonic functions are discussed.

  7. Karakteristik Roti Manis dari Pati Sagu yang Dimodifikasi dengan Lactobacillus plantarum 1 RN2-12112

    Directory of Open Access Journals (Sweden)

    Yusmarini Yusmarini

    2016-10-01

    Full Text Available Pati sagu dapat dimodifikasi secara mikrobiologis dengan memanfaatkan isolat bakteri asam laktat   L. plantarum 1 RN2-12112. Tujuan penelitian adalah untuk megetahui karakteristik  roti manis yang dibuat dengan memanfaatkan pati sagu temodifikasi sebagai bahan substitusi tepung terigu. Hasil penelitian menunjukkan bahwa roti manis yang dibuat dengan memanfaatkan pati sagu termodifikasi dapat mengurangi penggunaan terigu. Pemanfaatan pati sagu termodifikasi secara mikrobiologis dalam pembuatan roti manis memberikan pengaruh yang nyata terhadap kadar air, abu, protein, lemak, karbohidrat dan volume pengembangan. Penambahan pati sagu hingga 45% masih menghasilkan roti manis yang memenuhi standar dengan tingkat pengembangan yang cukup baik.

  8. rn Rüsen y la conciencia histórica

    Directory of Open Access Journals (Sweden)

    Carmen Lucía Cataño Balseiro

    2011-07-01

    Full Text Available “Historical consciousness” category, according to German historian and philosopher Jörn Rüsen, refers to a historical sense generation theory in which historical memory stands as the historical consciousness main component, both aiming for the creation of historical culture. This historical culture is defined by the set of functions through which an individual or society creates an active relationship with the past via a temporal experience that should be perceived and interpreted before becoming the way to orientate and motivate human life. This paper intends to describe the “historical consciousness” category.

  9. Experiential learning: using virtual simulation in an online RN-to-BSN program.

    Science.gov (United States)

    Breen, Henny; Jones, Melissa

    2015-01-01

    This article highlights the innovative experiential learning used by an online RN-to-BSN program through the use of simulation that takes place in an online classroom. Three experiential learning activities using a virtual community are described. These learning activities engage the students in thinking about social justice and health policy, as well as teaching concepts that include community, leadership, influence, advocacy, networking, collaboration, and vulnerable populations. These concepts are critical to the learning needs of diploma and associate degree-prepared nurses who wish to continue their education to be better prepared to meet the complex needs of today's health care environment. Copyright 2015, SLACK Incorporated.

  10. THE IMPLICATIONS OF STATE AID TO RnD ON ECONOMIC DEVELOPMENT IN THE EUROPEAN UNION

    Directory of Open Access Journals (Sweden)

    Bacila Nicolae

    2012-07-01

    Full Text Available In economic terms, the importance of state aid policy refers to the maintaining of an undistorted competition and the correction of inherent “market failures” which may occur in the economy, aiming at increasing economic efficiency, based on the traditional assumption that an effective competition will have a positive impact on economic development. The main objective of the present paper is to establish a possible correlation between state aid to research and development (RnD and GDP level in the EU. Our research hypothesis relates to considering state aid as a significant contribution to the economic development, measured by GDP level, which will be estimated as a function of state aid. Consequently, the main variables of this study are state aid to RnD and GDP level, considered in both relative and absolute terms. The relationship between technological change and economic development has been at the centre of the interest in both theoretical and empirical literature. The role of institutions and government policies in stimulating technological change has been provided mainly by the evolutionary theory, which considers economic development as a technological change driven process featured by a complex pattern which includes both uniformity and idiosyncrasy across time and countries. The relationship between these variables was estimated through a panel model which used seemly unrelated regression (SUR and ordinary least squares estimation (OLS. Taking into account that the economic value is likely to be realized after the innovation process took place we have interpreted this economic aspect in an econometric sense by using time lags. In analysing the relative importance of state aid to RnD, we have proposed an index which evaluates the relation between state aid and the relative size of the Member State’s economy. The relationship between state aid and GDP level was found to be positive and

  11. Transformational leadership and the hospice R.N. case manager: a new critical pathway.

    Science.gov (United States)

    Lafferty, C L

    1998-01-01

    This article asserts that in light of changing conditions in the healthcare environment, transformational leadership is the most appropriate leadership style for the hospice registered nurse case manager. The author defines transformational leadership and, tracing from early leadership theories, demonstrates how the transformational-transactional leadership paradigm emerged from preceding leadership theories. The components of transformational leadership--transformational behavior and transformational characteristics--are linked to hospice theory and hospice-specific nursing practices. The expanding role of the hospice R.N. case manager is addressed in light of transformational leadership and culture building. Specific actions are proposed in the arenas of research, education, and community, corporate, and legislative involvement.

  12. The Author on Stage Björn Ranelid as Performance Artist

    Directory of Open Access Journals (Sweden)

    Torbjörn Forslid

    2010-11-01

    Full Text Available Media development has profoundly affected the literary public sphere. Authors as well as politicians may feel obliged to follow “the law of compulsory visibility” (John B. Thompson. All contemporary writers, be it bestselling authors or exclu-sive, high brow poets, must in one way or another reflect on their marketing and media strategies. Meeting and communicating with the audience, the potential readers, is of critical importance. In the article “The Author on Stage”, the authors consider how different literary performances by Swedish novelist Björn Ranelid (b. 1949 help establish his “brand name” on the literary market place.

  13. Characteristic emission enhancement in the atmosphere with Rn trace using metal assisted LIBS

    Energy Technology Data Exchange (ETDEWEB)

    Hashemi, M. M. [Physics Department, Doctorate Technical Center of PNU, P.O. Box 19536-33511, Tehran (Iran, Islamic Republic of); Parvin, P., E-mail: parvin@aut.ac.ir; Moosakhani, A. [Physics Department, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of); Mortazavi, S. Z.; Reyhani, A. [Physics Department, Imam Khomeini International University, P.O. Box 34149-16818, Qazvin (Iran, Islamic Republic of); Majdabadi, A. [Laser and Optics Research School, NSTRI, P.O. Box 11155-3486, Tehran (Iran, Islamic Republic of); Abachi, S. [Physics Department, University of California, Irvin, CA 92697 (United States)

    2014-06-15

    Several characteristic emission lines from the metal targets (Cu, Zn and Pb) were investigated in trace presence of radon gas in the atmospheric air, using Q-SW Nd:YAG laser induced plasma inside a control chamber. The emission lines of metal species are noticeably enhanced in (Rn+air), relative to those in the synthetic air alone. Similar spectra were also taken in various sub-atmospheric environments in order to determine the optimum pressure for enhancement. Solid-state nuclear track detectors were also employed to count the tracks due to alpha particles for the activity assessment.

  14. Characteristic emission enhancement in the atmosphere with Rn trace using metal assisted LIBS

    Directory of Open Access Journals (Sweden)

    M. M. Hashemi

    2014-06-01

    Full Text Available Several characteristic emission lines from the metal targets (Cu, Zn and Pb were investigated in trace presence of radon gas in the atmospheric air, using Q-SW Nd:YAG laser induced plasma inside a control chamber. The emission lines of metal species are noticeably enhanced in (Rn+air, relative to those in the synthetic air alone. Similar spectra were also taken in various sub-atmospheric environments in order to determine the optimum pressure for enhancement. Solid-state nuclear track detectors were also employed to count the tracks due to alpha particles for the activity assessment.

  15. Radioactive sup 2 sup 2 sup 2 Rn daughter nuclides on a paper strip

    CERN Document Server

    Peralta, L; Ortigão, C

    2003-01-01

    The isotope sup 2 sup 2 sup 2 Rn belongs to the sup 2 sup 3 sup 8 U decay chain and can be obtained from natural mineral sources. The fact that radon is a gas and its radionuclide daughters get implanted on surrounding materials allows a set of different experiments in radiation physics. These experiments range from isotope decay time measurement to alpha, beta and gamma spectroscopy. To solve the radioactive decay chain equations, a simple iterative method is used as an alternative to the exact analytical solution.

  16. Design of Real-Time Monitoring and Control sytem of 222Rn/220 Rn sampling for Radon chamber%氡室222 Rn/220 Rn采样的实时监测与控制系统设计

    Institute of Scientific and Technical Information of China (English)

    吴荣燕; 赵修良; 张美琴; 俞红

    2008-01-01

    提出了以Intel 51系列单片机为控制核心的.222Rn/220Rn采样监测与控制系统设计方案.硬件部分对传感器、A/D转换器件、USB芯片、键盘和数码显示芯片、光耦隔离与直流泵驱动芯片的选择和使用进行了详细介绍,并给出了电路设计简图;软件部分包括上下位机软件,分别通过Visual Basic语言和汇编语言实现数据采集转换及直流泵流量控制,并采用PID控制算法对泵流量稳定性进行改善,给出了程序流程图.

  17. fertilizada con diferentes abonos

    Directory of Open Access Journals (Sweden)

    Jorge Alberto Elizondo-Salazar

    2007-01-01

    Full Text Available Producción y calidad de la biomasa de morera (Morus alba fertilizada con diferentes abonos. Se llevó a cabo un experimento en la Estación Experimental “Alfredo Volio Mata” de la Universidad de Costa Rica con el fi n de evaluar la aplicación de 150 kg de N/ha/año proveniente de dos abonos orgánicos: lombriabono y compostaje; y de un fertilizante químico, sobre la producción y calidad de la biomasa de morera. El periodo experimental comprendió un ciclo de 12 meses, iniciando en julio del 2003 y fi nalizando en julio del 2004. Se utilizó una plantación de morera de 12 años de establecida con una densidad de siembra de 27.777 plantas/ ha. Se empleó un diseño de bloques completos al azar con cuatro tratamientos: dos abonos orgánicos, nitrato de amonio (33,5% N y un control. Las plantas se podaron a 0,6 m sobre el nivel del suelo al inicio del ensayo. Durante el periodo experimental, las plantas fueron podadas consecutivamente cada 90 días. Las hojas y los tallos fueron separados y analizados para determinar el contenido de materia seca y proteína cruda. La producción de materia seca fue 23% superior y el contenido de proteína cruda fue signifi cativamente mayor con el nitrógeno químico, mientras que el contenido de materia seca fue menor. No se encontraron diferencias signifi cativas entre el tratamiento control y los tratamientos orgánicos.

  18. X-ray Crystal Structures of Monomeric and Dimeric Peptide Inhibitors in Complex with the Human Neonatal Fc Receptor, FcRn

    Energy Technology Data Exchange (ETDEWEB)

    Mezo, Adam R.; Sridhar, Vandana; Badger, John; Sakorafas, Paul; Nienaber, Vicki (Zenobia); (Biogen)

    2010-10-28

    The neonatal Fc receptor, FcRn, is responsible for the long half-life of IgG molecules in vivo and is a potential therapeutic target for the treatment of autoimmune diseases. A family of peptides comprising the consensus motif GHFGGXY, where X is preferably a hydrophobic amino acid, was shown previously to inhibit the human IgG:human FcRn protein-protein interaction (Mezo, A. R., McDonnell, K. A., Tan Hehir, C. A., Low, S. C., Palombella, V. J., Stattel, J. M., Kamphaus, G. D., Fraley, C., Zhang, Y., Dumont, J. A., and Bitonti, A. J. (2008) Proc. Natl. Acad. Sci. U.S.A., 105, 2337-2342). Herein, the x-ray crystal structure of a representative monomeric peptide in complex with human FcRn was solved to 2.6 {angstrom} resolution. The structure shows that the peptide binds to human FcRn at the same general binding site as does the Fc domain of IgG. The data correlate well with structure-activity relationship data relating to how the peptide family binds to human FcRn. In addition, the x-ray crystal structure of a representative dimeric peptide in complex with human FcRn shows how the bivalent ligand can bridge two FcRn molecules, which may be relevant to the mechanism by which the dimeric peptides inhibit FcRn and increase IgG catabolism in vivo. Modeling of the peptide:FcRn structure as compared with available structural data on Fc and FcRn suggest that the His-6 and Phe-7 (peptide) partially mimic the interaction of His-310 and Ile-253 (Fc) in binding to FcRn, but using a different backbone topology.

  19. Exploring (222)Rn as a tool for tracing groundwater inflows from eskers and moraines into slope peatlands of the Amos region of Quebec, Canada.

    Science.gov (United States)

    Berthot, Laureline; Pinti, Daniele L; Larocque, Marie; Gagné, Sylvain; Ferlatte, Miryane; Cloutier, Vincent

    2016-11-01

    Peatlands can play an important role in the hydrological dynamics of a watershed. However, interactions between groundwater and peat water remain poorly understood. Here, we present results of an exploratory study destined to test radon ((222)Rn) as a potential tracer of groundwater inflows from fluvioglacial landform aquifers to slope peatlands in the Amos region of Quebec, Canada. (222)Rn occurs in groundwater but is expected to be absent from peat water because of its rapid degassing to the atmosphere. Any (222)Rn activity detected in peat water should therefore derive from groundwater inflow. (222)Rn activity was measured in groundwater from municipal, domestic wells and newly drilled and instrumented piezometers from the Saint-Mathieu-Berry and Barraute eskers (n = 9), from the Harricana Moraine (n = 4), and from the fractured bedrock (n = 3). Forty measurements of (222)Rn activity were made from piezometers installed in five slope peatlands, along six transects oriented perpendicular to the fluvioglacial deposits. The relationship between (222)Rn and total dissolved solids (TDS) measured in water from the mineral deposits underlying the peat layer suggests that (222)Rn is introduced by lateral inflow from eskers and moraine together with salinity. This input is then diluted by peat water, depleted in both TDS and (222)Rn. The fact that a relationship between TDS and (222)Rn is visible calls for a continuous inflow of groundwater from lateral eskers/moraines, being (222)Rn rapidly removed from the system by radioactive decay. Although more research is required to improve the sampling and tracing techniques, this work shows the potential of (222)Rn tracer to identify groundwater inflow areas from granular aquifers found in eskers and moraines to slope peatlands. Copyright © 2016 Elsevier Ltd. All rights reserved.

  20. The influence of the nature of soil and plant and pollution on the 238U, 232Th, 222Rn and 220Rn concentrations in various natural honey samples using nuclear track detectors: Impact on the adult consumers

    Indian Academy of Sciences (India)

    M A Misdaq; A Mortassim

    2009-11-01

    238U and 232Th concentrations as well as 222Rn and 220Rn -activities per unit volume were measured in various natural honey samples collected from different regions in Morocco using CR-39 and LR-115 type II solid state nuclear track detectors (SSNTDs). These radionuclides were also measured in soils, plant flowers and nectar solutions corresponding to the honey samples studied. In addition, these radionuclides were measured in different imported honey samples. The measured 238U, 232Th, 222Rn and 220Rn concentrations ranged from (1.5 ± 0.1) mBq kg-1 to (10.6 ± 0.6) mBq kg-1, (1.1 ± 0.1) mBq kg-1 to (4.2 ± 0.2) mBq kg-1 , (1.5 ± 0.1) Bq kg-1 to (10.6 ± 0.6) Bq kg-1 and (1.1 ± 0.1) Bq kg-1 to (4.2 ± 0.2) Bq kg-1 for the honey samples studied, respectively. Annual 238U, 232Th and 222Rn intakes by Moroccan adults from the consumption of honey were assessed. The influence of the nature of soil and plant on the 238U and 232Th contents of the studied honey samples was investigated. These measurements were completed by an investigation of the 238U and 232 Th transfer between soils and plant flowers and that between plant flowers and honey, and also by the investigation of the influence of pollution due to different material dusts on 238U, 232Th and 222Rn in the honey samples studied. Committed equivalent doses due to the annual intake of 238U, 232Th and 222Rn were evaluated in the organs of adult members of the Moroccan rural population from the ingestion of the honey samples. The maximum total committed effective dose due to 238U, 232Th and 222Rn from the ingestion of natural honey by the Moroccan rural population was found to be equal to 0.64 Sv y-1 .

  1. Determination of {sup 222}Rn and its physico-chemical and biological characteristics in aquifers of Toluca valley; Determinacion de {sup 222}Rn y caracteristicas fisicoquimicas y biologicas en acuiferos del Valle de Toluca

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez, A.; Aranda, P.; Ceballos, S.; Cruz, D.; Jauregui, B.; Lopez, R.; Pena, P.; Salazar, S.; Segovia, N.; Tamez, E. [Instituto nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    1997-07-01

    In this work it is realized a geochemical study which includes the evaluation of {sup 222} Rn concentration in drinking water wells at Toluca city and a spring water of Almoloya de Juarez municipality at State of mexico. the same is studied about evolution of {sup 222} Rn concentration in water of the hydrating which supply it to those wells. the geochemical evaluation also covers the determination of major and minor elements or trace and the biological analysis of water. The study includes two seasonal cycles, the low water mark one and other the rainy for being able to evaluate the aquifers reloading effects in the water composition. (Author)

  2. {sup 222} Rn determination and physicochemical characteristic and biological in aquifers in the Toluca Valley; Determinacion de {sup 222} Rn y caracteristicas fisicoquimicas y biologicas en acuiferos del Valle de Toluca

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez A, A

    1998-10-01

    Concentration levels of {sup 222} Rn and {sup 226} Rn have been analyzed in water samples from boreholes belonging to the drinking water supply system around Toluca, Mexico. The {sup 222} Rn source is the decay of {sup 226} Rn within the solid matrix of the aquifer. The study was performed during the dry and rainy seasons. {sup 222} Rn concentration was determined by the liquid scintillation technique, {sup 226} Rn was determined by gamma spectrometry, the physicochemical parameters and bacteriological analysis were performed by conventional chemical techniques. Solubilized trace elements were determined by Inductively Coupled Plasma - Mass Spectrometry (Icp-Ms). The radon level fluctuations at the boreholes in Toluca city and Almoloya spring indicated differences in the radon content. At borehole Lodos Prietos 2, the temperature and radon level were systematically the highest in comparison with the other boreholes and the spring indicating a contribution of a regional flow to the water of this particular borehole. The result for {sup 226} Rn, the average {sup 222} Rn observed during the sampling period, no correspondence occurs between the radium and the radon content indicating that, radon is not supported by radium, but is incorporated into the water through fissures in the rocks in contact with the water. The radon levels obtained in house faucets which water is supplied by boreholes decrease as a function of the distance from the source borehole to the house. With the chemical composition of each one of the studied boreholes and spring a Piper diagram was draw indicating the kind of water. The boreholes and spring can be classified as bicarbonate calcium/magnesium. Almost no fluctuation on time was observed in the chemical species and trace elements only a slight increase was observed at the end of the rain season. At Almoloya, spring pollution with coliform bacteria and nitrates showed an anthropogenic contribution to the water deterioration probable and

  3. Anvender vi det optimale dosisregime for phenoxymethylpenicillin til børn mellem 0-10 år ?

    DEFF Research Database (Denmark)

    Glerup, Mia; Rittig, Søren; Veirum, Jens Erik;

    2011-01-01

    fået anlagt i.v. adgang. 20 børn skal indtage phenoxymethylpenicillin mikstur 25 mg/kg og 20 børn skal indtage 50 mg/kg. Blodprøver udtages 0-7 timer efter indtagelsen. Metode 2: Koncentrationen af penicillinet i blodprøverne bestemmes ved at måle hæmningszonen for Streptococcus Pyogenes på en...... agarplade påsat patientserum. Herefter sammenlignes med hæmningszonerne for Streptococcus Pyogenes på en anden agarplade påsat kendte penicillinkoncentrationer i intervallet 0,5-32 μg/ml (Standard disk diffusion bioassay). Resultater. To børn er færdigundersøgt. Begge havde maksimal koncentration 1 time...

  4. Estimates of Some Integral Operators with Bounded Variable Kernels on the Hardy and Weak Hardy Spaces over Rn

    Institute of Scientific and Technical Information of China (English)

    Hua WANG

    2016-01-01

    In this paper, we first introduce Lσ 1-(log L)σ 2 conditions satisfied by the variable kernelsΩ (x, z) for 0 ≤ σ 1 ≤ 1 and σ 2 ≥ 0. Under these new smoothness conditions, we will prove the boundedness properties of singular integral operators TΩ , fractional integrals TΩ ,α and parametric Marcinkiewicz integralsμρΩ with variable kernels on the Hardy spaces Hp(Rn) and weak Hardy spaces WHp(Rn). Moreover, by using the interpolation arguments, we can get some corresponding results for the above integral operators with variable kernels on Hardy–Lorentz spaces Hp,q(Rn) for all p

  5. Modeling and experimental validation of the dispersion of 222Rn released from a uranium mine ventilation shaft

    Science.gov (United States)

    Xie, Dong; Wang, Hanqing; Kearfott, Kimberlee J.

    2012-12-01

    Radon (222Rn) found in uranium mine shaft ventilation exhaust gases could pose hazards to the surrounding environment and the public by virtue of its progeny. Radon migration under complex terrain is complicated by pollution source characteristics, geographical features of the dispersion region, meteorological conditions and precipitation. Fluid dynamics computations of 222Rn dispersion are performed for uranium mine shaft exhausts for complex models of the actual physical terrain corresponding to a mine in the Jiangxi Province of China. The eight cases studied included a ventilation shaft source, four downwind velocities (0.5, 1.0, 2.0, 4.0 m s-1) and two underlying surface roughness characteristics (0.1 m, 1.0 m). 222Rn distributions in the vicinity of uranium mine ventilation shaft are computed and compared with field measurements.

  6. Dose by {sup 222} Rn in houses of the Chihuahua city; Dosis por {sup 222} Rn en casas-habitacion de la ciudad de Chihuahua

    Energy Technology Data Exchange (ETDEWEB)

    Colmenero S, L.H.; Talamantes F, C. [ITCH II, Ave. de las Industrias 11101, Chihuahua (Mexico); Villalba, M.L. [UACH, Facultad de Ingenieria, Chihuahua (Mexico); Dobson, P.F. [Laboratorio Nacional Lawrence Berkeley, California (United States); Ortalejo M, B. [UACH, Facultad de Enfermeria y Nutriologia, Chihuahua (Mexico)]. e-mail: luis.colmenero@cimav.edu.mx

    2007-07-01

    Full text: The dose equivalent that the population of the Chihuahua city receives due to the radon in air that joined to values of uranium, thorium and potassium due to the floor and radon in water was determined, they give values very above the international and national norms. The state of Chihuahua contains near 56 locations distributed by the whole state. The city of Chihuahua, capital of the state, is surrounded of rocks with great content of uranium, for what their floor also contains to the {sup 226} Ra that generates to the {sup 222} Rn. The construction of the housings of the city of Chihuahua is mainly of brick, block and adobe; the material to elaborate them is take from the rocks and floor of the surroundings, this makes that the radon is presented in a great quantity of houses of this city. As the floor and water they also contain those natural radionuclides, the total dose equivalent that the inhabitants receive is bigger to other cities of the country. Diverse international organizations dedicated to the radioactivity, indicate that the level of the {sup 222} Rn should not surpass the 148 Bq/m{sup 3}, since this gas produces lung cancer. The state of Chihuahua has an index of deaths on the average by lung cancer of double the national average, the capital of the state also has a high index. The radon concentration in a house depends on the construction material with which was made, as well as of the existent climatic conditions. During the day, this concentration depends mainly on the interior temperature, so during the night and dawn increases the radon concentration. The radon is the biggest source of radioactive dose received by the human being and it can generate a problem of public health if the concentration is high during enough time, for what the city of Chihuahua has the geologic and climatic characteristics to have it. This study was carried out in 50 house-room of the city of Chihuahua. Built houses with brick, block and adobe were

  7. Functional characterization of the origin of replication of pRN1 from Sulfolobus islandicus REN1H1.

    Science.gov (United States)

    Joshua, Chijioke J; Perez, Luis D; Keasling, Jay D

    2013-01-01

    Plasmid pRN1 from Sulfolobus islandicus REN1H1 is believed to replicate by a rolling circle mechanism but its origin and mechanism of replication are not well understood. We sought to create minimal expression vectors based on pRN1 that would be useful for heterologous gene expression in S. acidocaldarius, and in the process improve our understanding of the mechanism of replication. We constructed and transformed shuttle vectors that harbored different contiguous stretches of DNA from pRN1 into S. acidocaldarius E4-39, a uracil auxotroph. A 232-bp region 3' of orf904 was found to be critical for pRN1 replication and is therefore proposed to be the putative origin of replication. This 232-bp region contains a 100-bp stem-loop structure believed to be the double-strand origin of replication. The loop of the 100-bp structure contains a GTG tri-nucleotide motif, a feature that was previously reported to be important for the primase activity of Orf904. This putative origin and the associated orf56 and orf904 were identified as the minimal replicon of pRN1 because transformants of plasmids lacking any of these three features were not recovered. Plasmids lacking orf904 and orf56 but harboring the putative origin were transformable when orf904 and orf56 were provided in-trans; a 75-bp region 5' of the orf904 start codon was found to be essential for this complementation. Detailed knowledge of the pRN1 origin of replication will broaden the application of the plasmid as a genetic tool for Sulfolobus species.

  8. Functional characterization of the origin of replication of pRN1 from Sulfolobus islandicus REN1H1.

    Directory of Open Access Journals (Sweden)

    Chijioke J Joshua

    Full Text Available Plasmid pRN1 from Sulfolobus islandicus REN1H1 is believed to replicate by a rolling circle mechanism but its origin and mechanism of replication are not well understood. We sought to create minimal expression vectors based on pRN1 that would be useful for heterologous gene expression in S. acidocaldarius, and in the process improve our understanding of the mechanism of replication. We constructed and transformed shuttle vectors that harbored different contiguous stretches of DNA from pRN1 into S. acidocaldarius E4-39, a uracil auxotroph. A 232-bp region 3' of orf904 was found to be critical for pRN1 replication and is therefore proposed to be the putative origin of replication. This 232-bp region contains a 100-bp stem-loop structure believed to be the double-strand origin of replication. The loop of the 100-bp structure contains a GTG tri-nucleotide motif, a feature that was previously reported to be important for the primase activity of Orf904. This putative origin and the associated orf56 and orf904 were identified as the minimal replicon of pRN1 because transformants of plasmids lacking any of these three features were not recovered. Plasmids lacking orf904 and orf56 but harboring the putative origin were transformable when orf904 and orf56 were provided in-trans; a 75-bp region 5' of the orf904 start codon was found to be essential for this complementation. Detailed knowledge of the pRN1 origin of replication will broaden the application of the plasmid as a genetic tool for Sulfolobus species.

  9. Measurement of 222Rn dissolved in water at the Sudbury Neutrino Observatory

    Science.gov (United States)

    Blevis, I.; Boger, J.; Bonvin, E.; Cleveland, B. T.; Dai, X.; Dalnoki-Veress, F.; Doucas, G.; Farine, J.; Fergani, H.; Grant, D.; Hahn, R. L.; Hamer, A. S.; Hargrove, C. K.; Heron, H.; Jagam, P.; Jelley, N. A.; Jillings, C.; Knox, A. B.; Lee, H. W.; Levine, I.; Liu, M.; Majerus, S.; McDonald, A.; McFarlane, K.; Mifflin, C.; Noble, A. J.; Noël, S.; Novikov, V. M.; Rowley, J. K.; Shatkay, M.; Simpson, J. J.; Sinclair, D.; Sur, B.; Wang, J.-X.; Yeh, M.; Zhu, X.

    2004-01-01

    The technique used at the Sudbury Neutrino Observatory (SNO) to measure the concentration of 222Rn in water is described. Water from the SNO detector is passed through a vacuum degasser (in the light water system) or a membrane contact degasser (in the heavy water system) where dissolved gases, including radon, are liberated. The degasser is connected to a vacuum system which collects the radon on a cold trap and removes most other gases, such as water vapor and N 2. After roughly 0.5 tonnes of H 2O or 6 tonnes of D 2O have been sampled, the accumulated radon is transferred to a Lucas cell. The cell is mounted on a photomultiplier tube which detects the α-particles from the decay of 222Rn and its progeny. The overall degassing and concentration efficiency is about 38% and the single-α counting efficiency is approximately 75%. The sensitivity of the radon assay system for D 2O is equivalent to ˜3×10 -15 g U/g water. The radon concentration in both the H 2O and D 2O is sufficiently low that the rate of background events from U-chain elements is a small fraction of the interaction rate of solar neutrinos by the neutral current reaction.

  10. Measurements of indoor {sup 222}Rn concentration in two art galleries

    Energy Technology Data Exchange (ETDEWEB)

    Carneiro, Luana Gomes; Braz, Delson; Jesus, Edgar Francisco de, E-mail: carneiro@ird.gov.b [Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE/UFRJ), Rio de Janeiro, RJ (Brazil); Cunha, Kenya Dias da; Medeiros, Geiza; Zouain, Felipe, E-mail: kenya@ird.gov.b [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Pitassi, Gabriel; Leite, Carlos Barros [Pontificia Universidade Catolica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ (Brazil); Cardoso, Katia, E-mail: cardoso@ien.gov.b [Instituto de Engenharia Nuclear (IEN/CNEN-RJ), Rio de Janeiro, RJ (Brazil)

    2009-07-01

    It is point out that radon and their decay products in environment give high dose to human lung. Studies indicate that the indoor radon inhalation by humans has been considered probably the second most important cause of lung cancer after of smoking. A passive-type radon detector was used for measuring indoor radon concentration in two art galleries at Rio de Janeiro city during 90 days January to March, 2009. The aim of this study is to evaluate the occupational and public radon exposure in art galleries and museums. This paper shows the preliminary results of samples collected at two art galleries located in Gavea, Rio de Janeiro city. 30 LEXAN (GE) track detectors were exposed in the air (indoor as well as outdoor). The samples were collected in the same building which is a construction of XIX century. The analysis of the results suggests that the {sup 222}Rn concentration levels are different in both sampling site, in closed environmental, demonstrating that, although the construction materials are the same the absence of circulating air is a factor very important to increase the concentration of indoor Rn. (author)

  11. Uncertainty and Sensitivity of Alternative Rn-222 Flux Density Models Used in Performance Assessment

    Energy Technology Data Exchange (ETDEWEB)

    Greg J. Shott, Vefa Yucel, Lloyd Desotell

    2007-06-01

    Performance assessments for the Area 5 Radioactive Waste Management Site on the Nevada Test Site have used three different mathematical models to estimate Rn-222 flux density. This study describes the performance, uncertainty, and sensitivity of the three models which include the U.S. Nuclear Regulatory Commission Regulatory Guide 3.64 analytical method and two numerical methods. The uncertainty of each model was determined by Monte Carlo simulation using Latin hypercube sampling. The global sensitivity was investigated using Morris one-at-time screening method, sample-based correlation and regression methods, the variance-based extended Fourier amplitude sensitivity test, and Sobol's sensitivity indices. The models were found to produce similar estimates of the mean and median flux density, but to have different uncertainties and sensitivities. When the Rn-222 effective diffusion coefficient was estimated using five different published predictive models, the radon flux density models were found to be most sensitive to the effective diffusion coefficient model selected, the emanation coefficient, and the radionuclide inventory. Using a site-specific measured effective diffusion coefficient significantly reduced the output uncertainty. When a site-specific effective-diffusion coefficient was used, the models were most sensitive to the emanation coefficient and the radionuclide inventory.

  12. Predicting NCLEX-RN Success: the Seventh Validity Study HESI Exit exam.

    Science.gov (United States)

    Young, Anne; Willson, Pamela

    2012-01-01

    The findings of six previously conducted studies indicated that the HESI (E) was highly accurate in predicting NCLEX-RN success. The purpose of this study-the seventh study to investigate the validity of the E-was to examine the accuracy of three parallel versions of the Ein predicting licensure success and to describe program practices regarding E benchmark scores, remediation programs, and retesting policies. The findings of this study again indicated that the E was highly accurate in predicting NCLEX-RN success. Additionally, all three versions of the E were found to have a predictive accuracy above 90%. The most common E benchmark score designated by faculty at the participating schools was 850, and most schools required students to retest with different versions of the E until the faculty-designated E benchmark score was achieved. Remediation seemed to be effective in raising students' E scores, and it was recommended that future research investigate the effectiveness of specific remediation strategies.

  13. Quantitative research on critical thinking and predicting nursing students' NCLEX-RN performance.

    Science.gov (United States)

    Romeo, Elizabeth M

    2010-07-01

    The concept of critical thinking has been influential in several disciplines. Both education and nursing in general have been attempting to define, teach, and measure this concept for decades. Nurse educators realize that critical thinking is the cornerstone of the objectives and goals for nursing students. The purpose of this article is to review and analyze quantitative research findings relevant to the measurement of critical thinking abilities and skills in undergraduate nursing students and the usefulness of critical thinking as a predictor of National Council Licensure Examination-Registered Nurse (NCLEX-RN) performance. The specific issues that this integrative review examined include assessment and analysis of the theoretical and operational definitions of critical thinking, theoretical frameworks used to guide the studies, instruments used to evaluate critical thinking skills and abilities, and the role of critical thinking as a predictor of NCLEX-RN outcomes. A list of key assumptions related to critical thinking was formulated. The limitations and gaps in the literature were identified, as well as the types of future research needed in this arena.

  14. Academic and nursing aptitude and the NCLEX-RN in baccalaureate programs.

    Science.gov (United States)

    McCarthy, Mary Ann; Harris, Debra; Tracz, Susan M

    2014-03-01

    Accurately predicting NCLEX-RN® success has a positive impact on all nursing education stakeholders. This study focused on the ability to predict NCLEX-RN pass rates on the basis of prenursing academic aptitude variables and the Assessment Technologies Institute (ATI) nursing aptitude program. The ATI predictors were the Test of Essential Academic Skills (TEAS) and fi ve ATI subject tests: Fundamentals, Medical Surgical, Nursing Care of Children, Mental Health, and Maternal Newborn. The prenursing variables comprised the prenursing grade point average, a prerequisite communication course, and the ATI TEAS composite subscores of TEAS Reading, TEAS Math, TEAS Science, and TEAS English. This study included participants from four baccalaureate nursing programs in the California State University system. Results of canonical correlation, multiple linear regression, and logistic regression revealed a significant correlation among prenursing, ATI scores, and NCLEXRN fi rst-try pass rates. Prediction of NCLEX-RN success rate using standardized testing data was supported, with the strongest predictors being the ATI Medical Surgical and ATI Mental Health tests.

  15. Preparing underemployed Latino U.S. nurses through the Mexico NCLEX-RN Success Program.

    Science.gov (United States)

    Lujan, Josefina; Little, Kermit

    2010-12-01

    The critical nursing shortage in U.S. communities along the United States-Mexico border is compounded by the need for nurses who are linguistically and culturally concordant with the growing number of Latinos in these communities. The innovative 16-week Mexico NCLEX-RN Success Program responds to this need by helping underemployed Latino nurses, who were educated in Mexico and live in the United States, adapt linguistically and culturally to multiple-choice testing. Ten of the program students have taken the NCLEX-RN with a 50% pass rate, which is twice as high as the internationally educated candidate passing average. This demonstrates potential for the program to build the human capacity of U.S. communities along the United States-Mexico border by infusing linguistically and culturally concordant nurses into the workforce and materializing the dream of underemployed Latino nurses to implement their hard-earned and urgently needed nursing skills. Lessons learned from the program are discussed.

  16. An elementary proof of MinVol(Rn = 0 for n > 3

    Directory of Open Access Journals (Sweden)

    Jiaqiang Mei

    2008-12-01

    Full Text Available In this paper, we give an elementary proof of the result that the minimal volumes of R³ and R4 are zero. The approach is to construct a sequence of explicit complete metrics on them such that the sectional curvatures are bounded in absolute value by 1 and the volumes tend to zero. As a direct consequence, we get that MinVol (Rn = 0 for n > 3.Neste artigo fornecemos uma demonstração elementar do resultado de que os volumes minimais de R³ e R4 são ambos iguais a zero. A abordagem consiste na construção de uma seqüência de métricas completas explícitas nesses espaços cujas curvaturas seccionais são limitadas em valor absoluto por 1 e os volumes tendem a zero. Como conseqüência direta, estabelecemos que MinVol(Rn = 0 para n > 3.

  17. Environmental wodking level monitor. Final report. [for measuring airborne Rn-daughter concentrations

    Energy Technology Data Exchange (ETDEWEB)

    Keefe, D.; McDowell, W. P.; Groer, P. G.

    1978-09-29

    The Environmental Working Level Monitor (EWLM) is an instrument used to automatically monitor airborne Rn-daughter concentrations and the Working Level (WL). It is an ac powered, microprocessor--based instrument with an external inverter provided for dc operation if desired. The microprocessor's control processor unit (CPU) controls the actuation of the detector assembly and processes its output signals to yield the measurements in the proper units. The detectors are fully automated and require no manual operations once the instrument is programmed. They detect and separate the alpha emitters of RaA and RaC' as well as detecting the beta emitters of RaB and RaC. The resultant pulses from these detected radioisotopes are transmitted to the CPU. The programmed microprocessor performs the mathematical manipulations necessary to output accurate Rn-daughter concentrations and the WL. A special subroutine within the system program enables the EWLM to run a calibration procedure on command which yields calibration data. This data can then be processed in a separate program on most computers capable of BASIC programming. This calibration program results in the derivation of coefficients and beta efficiencies which provides the calibrated coefficients and beta efficiencies required by the main system program to assure proper calibration of the individual EWLM's.

  18. A Relativistic Many-Body Analysis of the Electric Dipole Moment of $^{223}$Rn

    CERN Document Server

    Sahoo, B K; Das, B P

    2014-01-01

    We report the results of our {\\it ab initio} relativistic many-body calculations of the electric dipole moment (EDM) $d_A$ arising from the electron-nucleus tensor-pseudotensor (T-PT) interaction, the interaction of the nuclear Schiff moment (NSM) with the atomic electrons and the electric dipole polarizability $\\alpha_d$ for $^{223}$Rn. Our relativistic random-phase approximation (RPA) results are substantially larger than those of lower-order relativistic many-body perturbation theory (MBPT) and the results based on the relativistic coupled-cluster (RCC) method with single and double excitations (CCSD) are the most accurate to date for all the three properties that we have considered. We obtain $d_A = 4.85(6) \\times 10^{-20} C_T \\ |e| \\ cm$ from T-PT interaction, $d_A=2.89(4) \\times 10^{-17} {S/(|e|\\ fm^3)}$ from NSM interaction and $\\alpha_d=35.27(9) \\ ea_0^3$. The former two results in combination with the measured value of $^{223}$Rn EDM, when it becomes available, could yield the best limits for the T-...

  19. Musikterapi med børn med svær autisme - en litteraturgennemgang

    Directory of Open Access Journals (Sweden)

    Ulla Holck

    2003-03-01

    Full Text Available Faglitteratur om musikterapi med børn med autisme er omfattende og indeholder såvel kvalitative case-beskrivelser som kvantitative forskningsundersøgelser. I artiklen gennemgås faglitteraturen systematisk med henblik på at specifi cere musikterapiens effekt og virkemåder i forhold til denne målgruppe. Vægten ligger på børn med svær autisme, men litteratur om voksne højtfungerende personer med autisme inddrages også. Forskningslitteraturen viser, at det især er inden for områderne koncentration, visuel opmærksomhed, respons og initiativ, samt brug af stemme og tur-tagning, at musikterapi har en effekt. Case-litteraturen begrunder denne effekt med musikkens evne til at være redundant, anvendelse af imitation og responsfremmende teknikker (overraskelse etc., fælles opbyggede samspilsformer, samt det temporale-interaktive element i improvisatorisk musikterapi. Ud fra en interaktionsteoretisk indfaldsvinkel sammenkobles effekten endvidere med, at den musikalske interaktion hjælper musikterapeuten til at fastholde et dynamisk udtryk, hvilket er afgørende i forhold til en klientgruppe, der ofte giver ´flad´ eller stærkt afvigende feedback.

  20. Purification and Characterization of Organic Solvent and Detergent Tolerant Lipase from Thermotolerant Bacillus sp. RN2

    Directory of Open Access Journals (Sweden)

    Tadahiko Kajiwara

    2010-09-01

    Full Text Available The aim of this study was to characterize the organic solvent and detergent tolerant properties of recombinant lipase isolated from thermotolerant Bacillus sp. RN2 (Lip-SBRN2. The isolation of the lipase-coding gene was achieved by the use of inverse and direct PCR. The complete DNA sequencing of the gene revealed that the lip-SBRN2 gene contains 576 nucleotides which corresponded to 192 deduced amino acids. The purified enzyme was homogeneous with the estimated molecular mass of 19 kDa as determined by SDS-PAGE and gel filtration. The Lip-SBRN2 was stable in a pH range of 9–11 and temperature range of 45–60 °C. The enzyme was a non metallo-monomeric protein and was active against pNP-caprylate (C8 and pNP-laurate (C12 and coconut oil. The Lip-SBRN2 exhibited a high level of activity in the presence of 108% benzene, 102.4% diethylether and 112% SDS. It is anticipated that the organic solvent and detergent tolerant enzyme secreted by Bacillus sp. RN2 will be applicable as catalysts for reaction in the presence of organic solvents and detergents.

  1. Matérn-based nonstationary cross-covariance models for global processes

    KAUST Repository

    Jun, Mikyoung

    2014-07-01

    Many spatial processes in environmental applications, such as climate variables and climate model errors on a global scale, exhibit complex nonstationary dependence structure, in not only their marginal covariance but also their cross-covariance. Flexible cross-covariance models for processes on a global scale are critical for an accurate description of each spatial process as well as the cross-dependences between them and also for improved predictions. We propose various ways to produce cross-covariance models, based on the Matérn covariance model class, that are suitable for describing prominent nonstationary characteristics of the global processes. In particular, we seek nonstationary versions of Matérn covariance models whose smoothness parameters vary over space, coupled with a differential operators approach for modeling large-scale nonstationarity. We compare their performance to the performance of some existing models in terms of the aic and spatial predictions in two applications: joint modeling of surface temperature and precipitation, and joint modeling of errors in climate model ensembles. © 2014 Elsevier Inc.

  2. Når børn trives i børnehaven

    DEFF Research Database (Denmark)

    Koch, Anette Boye

    2013-01-01

    Trivsel figurerer forrest i Dagtilbudslovens målbeskrivelse, men begrebet er komplekst og flertydigt. Hvordan ved pædagoger, at børn er i trivsel og hvilken betydning har de voksne for børns trivsel i børnehaven? Artiklen søger at besvare spørgsmålet ved at præsentere pointer fra et ph.d.-projekt......Trivsel figurerer forrest i Dagtilbudslovens målbeskrivelse, men begrebet er komplekst og flertydigt. Hvordan ved pædagoger, at børn er i trivsel og hvilken betydning har de voksne for børns trivsel i børnehaven? Artiklen søger at besvare spørgsmålet ved at præsentere pointer fra et ph...... væsentlige glædesfaktorer, og tildeler ikke de voksne stor betydning, når de skal fortælle, hvad der gør dem glade i børnehaven. Voksne er ikke uvigtige for børns trivsel i børnehaven, men børnene skaber selv trivsel ved på en og samme tid at leve op til og udfordre de voksnes forventninger som deltagere i...

  3. A Rn-220 source for the calibration of low-background experiments

    CERN Document Server

    Lang, Rafael F; Brown, Ethan; Cervantes, Mayra; Macmullin, Sean; Masson, Darryl; Schreiner, Jochen; Simgen, Hardy

    2016-01-01

    We characterize two 40 kBq sources of electrodeposited Th-228 for use in low-background experiments. The sources efficiently emanate Rn-220, a noble gas that can diffuse in a detector volume. Rn-220 and its daughter isotopes produce alpha, beta, and gamma-radiation, which may used to calibrate a variety of detector responses and features, before decaying completely in only a few days. We perform various tests to place limits on the release of other long-lived isotopes. In particular, we find an emanation of <0.008 atoms/min/kBq (90% CL) for Th-228 and 1.53 atoms/min/kBq for Ra-224. The sources lend themselves in particular to the calibration of detectors employing liquid noble elements such as argon and xenon. With the source mounted in a noble gas system, we demonstrate that filters are highly efficient in reducing the activity of these longer-lived isotopes further. We thus confirm the suitability of these sources even for use in next-generation experiments, such as XENON1T/XENONnT, LZ, and nEXO.

  4. Measurement of 222Rn dissolved in water at the Sudbury Neutrino Observatory

    CERN Document Server

    Blevis, I

    2004-01-01

    The technique used at the Sudbury Neutrino Observatory (SNO) to measure the concentration of 222Rn in water is described. Water from the SNO detector is passed through a vacuum degasser (in the light water system) or a membrane contact degasser (in the heavy water system) where dissolved gases, including radon, are liberated. The degasser is connected to a vacuum system which collects the radon on a cold trap and removes most other gases, such as water vapor and nitrogen. After roughly 0.5 tons of H2O or 6 tons of D2O have been sampled, the accumulated radon is transferred to a Lucas cell. The cell is mounted on a photomultiplier tube which detects the alpha particles from the decay of 222Rn and its daughters. The overall degassing and concentration efficiency is about 38% and the single-alpha counting efficiency is approximately 75%. The sensitivity of the radon assay system for D2O is equivalent to ~3 E(-15) g U/g water. The radon concentration in both the H2O and D2O is sufficiently low that the rate of ba...

  5. Direct measurement of attachment of {sup 220}Rn progeny on aerosols by atomic force microscopy

    Energy Technology Data Exchange (ETDEWEB)

    Leung, J.K.C. E-mail: jkcleung@hku.hk; Tso, M.Y.W.; Lam, J.H.C.; Zhau, Q.F

    2003-08-11

    Atomic force microscopy (AFM) is becoming a powerful tool for the study of nuclear tracks in materials such as CR-39. Coupled with its capability of observing near nm aerosol particles, we have utilized the AFM to observe the radon progeny-loaded aerosol particles deposited on surfaces of CR-39 and to observe the corresponding etch pits produced by the {alpha}-particles emitted from the radon progenies. A special platform was built so that after the aerosol particles on the CR-39 have been scanned and recorded, the CR-39 can be etched and then scanned for the etch pits at the same location. Both {sup 222}Rn and {sup 220}Rn progenies were used in the study. The progenies were generated by the appropriate radon sources and mixed with aerosol particles generated by aerosol generators. The aerosol size distributions were analyzed by a scanning mobility particle sizer. Some of the limitations and difficulties of the technique will be described. The results enable us to examine the attachment process including multiple attachments of radon progenies on aerosols.

  6. Relativistic many-body analysis of the electric dipole moment of 223Rn

    Science.gov (United States)

    Sahoo, B. K.; Singh, Yashpal; Das, B. P.

    2014-11-01

    We report the results of our ab initio relativistic many-body calculations of the electric dipole moment (EDM) dA arising from the electron-nucleus tensor-pseudotensor (T-PT) interaction, the interaction of the nuclear Schiff moment (NSM) with the atomic electrons and the electric dipole polarizability αd for 223Rn . Our relativistic random-phase approximation results are substantially larger than those of lower-order relativistic many-body perturbation theory and the results based on the relativistic coupled-cluster method with single and double excitations are highly accurate for all three properties that we have considered. We obtain dA=4.85 (6 ) ×10-20 CT|e | cm from T-PT interaction, dA=2.89 (4 ) ×10-17S /(|e |fm3) from NSM interaction, and αd=35.27 (9 ) e a03 . The former two results in combination with the measured value of 223Rn EDM, when it becomes available, could yield the best limits for the T-PT coupling constant, EDMs, and chromo-EDMs of quarks and θQCD parameter, and would thereby shed light on leptoquark and supersymmetric models that predict C P violation.

  7. DIAGNÓSTICO DA QUALIDADE SANITÁRIA DE PLANTAS MEDICINAIS COMERCIALIZADAS NO MUNICÍPIO DE CURRAIS NOVOS, RN.

    Directory of Open Access Journals (Sweden)

    Francisco Angelo Gurgel da Rocha

    2010-06-01

    Full Text Available Graças ao seu baixo custo e facilidade de acesso por parte da população, o uso de plantas medicinais como recurso terapêutico é uma constante em todo o território nacional. Dadas as condições inadequadas de coleta, processamento, transporte, armazenamento, exposição e manipulação do material, é possível que possa ocorrer a contaminação por microrganismos patogênicos, resultando em riscos à saúde humana. O presente trabalho objetivou di-agnosticar a qualidade microbiológica de amostras de pata de vaca (Bauhinia forticata, quixabeira (Bumelia sertorum e umburana (Amburana cearensis no município de Currais Novos, RN. Foram quantificados: aeróbios mesófilos (ágar Padrão de Contagem, 35±1°C/24h, coliformes totais/Escherichia coli (teste presuntivo: caldo LST, 35±0,5°C/24-48±2; CT: caldo VB, 35±0,5°C/24-48±2; E. coli: caldo EC, 44,5±0,2°C/24±2h; ágar L-EMB, 35±0,5°C/24±2h, bolores e leveduras (ágar Batata Dextrosado Acidificado, 25±1°C/5 dias e Staphylococcus aureus (ágar Baird-Parker, 35-37°C/24±2h. Para a con-firmação de E. coli, colônias foram submetidas às provas bioquímicas da série IMViC. To-das as amostras analisadas apresentaram contagens de bactérias do grupo dos coliformes totais. E. coli foi detectada em 34% das amostras. Níveis de bolores e leveduras e aeróbios mesófilos acima dos recomendados foram observados em 100% e 84% das amostras, res-pectivamente. S. aureus foi detectado em 25% das amostras. Os níveis de contaminação registrados apontam o material analisado como potencialmente danoso à saúde humana.

  8. Accelerated second-degree nursing students: predictors of graduation and NCLEX-RN first-time pass rates.

    Science.gov (United States)

    Penprase, Barbara B; Harris, Margaret A

    2013-01-01

    It is important to understand and identify factors that affect students' academic performance before entry into a nursing program and as they progress through the program. The authors discuss a study, and its outcomes, that assessed accelerated second-degree nursing students' prenursing and core nursing grades that served to predict their success at completing the nursing program and passing NCLEX-RN on first attempt. Strategies were identified to help at-risk students to be successful in the program and with first-time passage of NCLEX-RN.

  9. The contribution of cell surface FcRn in monoclonal antibody serum uptake from the intestine in suckling rat pups

    Directory of Open Access Journals (Sweden)

    Philip R Cooper

    2014-10-01

    Full Text Available The neonatal Fc Receptor (FcRn in intestinal epithelium is the primary mechanism for transfer of maternal immunoglobulin G (IgG from suckled milk to serum; but the factors contributing to the rapid uptake of IgG are poorly understood. These studies help to determine the contribution of cell-surface FcRn in IgG uptake in 2-week old rat pups by varying local pH and binding conditions. Variants of a human wild-type IgG monoclonal antibody (mAb WT were assessed for binding affinity (KD to rat (rFcRn at pH6.0 and subsequent off-rate at pH7.4 (1/s by Surface Plasmon Resonance. Selected mAbs were administered intra-intestinally in isofluorane-anesthetized 2-week rat pups. Full-length mAb in serum was quantified by immunoassay, (rFcRn mRNA expression by RT-PCR, and mAb epithelial localization was visualized by immunohistochemistry. After duodenal administration, serum levels of mAb variants correlated with their rFcRn off-rate at pH7.4, but not their affinity at pH6.0. The greatest serum levels of IgG were measured when mAb was administered in the duodenum where rFcRn mRNA expression is greatest, and was increased further by duodenal administration in pH6.0 buffer. More intense human IgG immunostaining was detected in epithelium than the same variant administered at higher pH. These data suggest an increased contribution for cell-surface receptor. We conclude that, in the neonate duodenum, receptor off-rates are as important as affinities for FcRn mediated uptake, and cell surface binding of IgG to rFcRn plays contributes to IgG uptake alongside pinocytosis; both of which responsible for increased IgG uptake.

  10. sistema Web con JSP

    Directory of Open Access Journals (Sweden)

    César Viloria Núñez

    2014-01-01

    Full Text Available Este artículo presenta el desarrollo de un sistema de información que permite la adquisición y la administración de información relacionada con los signos vitales como la presión arterial, la frecuencia cardiaca y respiratoria, y la saturación de oxígeno en la sangre de un paciente. La implementación del sistema se basa en una solución Web, permitiendo así que médicos especialistas puedan monitorear a sus pacientes desde cualquier punto conectado a la red en tiempo real y, al mismo tiempo, dar indicaciones críticas al personal médico que se encuentra en el lugar con el paciente.

  11. A Comparative Analysis of Demographic and Academic Characteristics and NCLEX-RN Passing among Urban and Rural Campus Students in a Midwest Associate Degree Nursing Program

    Science.gov (United States)

    Nacos-Burds, Kathleen J.

    2010-01-01

    A retrospective study was initiated to determine: (1) the predictive relationship between demographic and academic variables and NCLEX-RN success; and (2) if there were significant differences between urban and rural nursing students that could account for an increased percentage of rural NCLEX-RN failures. A convenience sample was comprised of…

  12. Use of Standardized Mastery Content Assessments Given during the First Year of a Baccalaureate Nursing Program for Predicting NCLEX-RN Outcomes

    Science.gov (United States)

    Emory, DeAnna Jan

    2012-01-01

    The purpose of this study was to evaluate the relationship between standardized content specific mastery assessments and NCLEX-RN outcomes. Three content-specific standardized assessments testing Fundamentals, Pharmacology and Mental Health concepts were used to explain the dichotomous NCLEX-RN outcome of pass or fail. The three assessments were…

  13. Trabajando fractales con Winlogo

    OpenAIRE

    Sabogal, Sonia; Arenas, Gilberto

    2007-01-01

    Después de una breve introducción en la cual se establecerán algunos conceptos teóricos básicos de la geometría fractal, se realizarán talleres en los cuales, con ayuda de las herramientas que trabaja el software WinLogo, se construirán diversos fractales, analizando sus principales características (autosimilitud, dimensión, etc.)

  14. Transporte forestal con cables

    OpenAIRE

    Anaya L. Héctor J.

    2012-01-01

    La explotación forestal es un problema fundamentalmente de transporte. El apeo y la preparación de las trozas, aunque a veces presentan algunas dificultades, son operaciones fáciles de resolver comparadas con la operación de transporte la cual absorbe del 60% al 70% o más del costo total del aprovechamiento del bosque. El 30% o 40% restante es absorbido por las faenas previas de apeo y troceo.

  15. Encuentros con Elena Poniatowska

    OpenAIRE

    Uzquiza González, José Ignacio

    2008-01-01

    El autor analiza, desde su encuentro con Elena Poniatowska, la vertiente de la literatura testimonial como literatura de mujeres. Un análisis interior de la relación entre realidad y ficción, entre Elena, Jesusa o Tinísima. The author analyzes testimonial literature from the perspective of female literature through his meeting with Elena Poniatowska. An analysis of reality vs. Fiction in Elena, Jesusa and Tinisima.

  16. pacientes con falla cardiaca

    Directory of Open Access Journals (Sweden)

    Diana Marcela Achury Saldaña

    2007-01-01

    Full Text Available Objetivo: determinar la adherencia al tratamiento de pacientes con falla cardiaca hospitalizados, al aplicar un plan educativo quefomenta el autocuidado.Método: estudio cuasiexperimental (entrevistas enfermera-paciente realizado entre diciembre de 2004 y mayo de 2006, con unamuestra de 50 pacientes seleccionados por conveniencia. Se diseñó un instrumento para evaluar los comportamientos de los pacientes,con base en algunos resultados de la adherencia y sus respectivos indicadores de la taxonomía NOC (Nursing out comes classification. Laadherencia al tratamiento fue medida en dos momentos: el primero durante la hospitalización, seguido de la aplicación del plan educativoantes del alta, que proporcionaba información en el manejo de su enfermedad desde una dimensión física, psicológica y social quepromueve el autocuidado; y el segundo un mes después del alta en su domicilio.Resultados: diferencias estadísticamente significativas (P=0,0001 que demuestran cómo mediante la capacitación al paciente enel manejo de su tratamiento farmacológico y no farmacológico, el establecimiento de una sana relación entre el profesional de enfermeríay el paciente, y la participación de la familia, se logra una total adherencia al tratamiento.Conclusiones: para lograr una adherencia total del paciente con falla cardiaca al tratamiento es necesario un proceso educativo y unseguimiento continuo y personalizado que motive permanentemente al paciente y se le reconozca el papel protagónico en su cuidado y manejo de la enfermedad.

  17. Lectura con adolescentes

    Directory of Open Access Journals (Sweden)

    Silvia Méndez Anchía

    2007-01-01

    Full Text Available Con base en la premisa de que la lectura de textos literarios tiene una función formadora y que esta se acentúa en la adolescencia, me propongo demostrar que el cuento “Rapunzel” puede utilizarse como estrategia para explorar algunas situaciones que los sujetos adolescentes perciben como particulares en relación con su vida, pero que se inscriben dentro de grandes problemáticas estudiadas por varias disciplinas. Para ello, he identificado, desde dos marcos de referencia (sociológico y psicoanalítico, diversas problemáticas y discursos que se desprenden de la lectura del cuento realizada por dos mujeres adolescentes, quienes respondieron una guía de lectura y participaron en una entrevista a profundidad. Concluyo que la lectura y comentario del cuento hacen posible que una serie de experiencias que los sujetos adolescentes viven como únicas (como el embarazo de una amiga, las críticas de las personas adultas y las exigencias de padres y madres, ingresen en el circuito de los conocimientos generales al relacionarlas con los discursos y problemáticas en que se inscriben (por ejemplo, el discurso de la “crisis” de la adolescencia, el enfoque de derechos humanos, el mundo fantasmático materno. Por ello, recomiendo la lectura y comentario de textos literarios como estrategia didáctica para contribuir a la elaboración de la subjetividad de personas adolescentes.

  18. Comparability of nurse staffing measures in examining the relationship between RN staffing and unit-acquired pressure ulcers: a unit-level descriptive, correlational study.

    Science.gov (United States)

    Choi, JiSun; Staggs, Vincent S

    2014-10-01

    Various staffing measures have been used in examining the relationship between nurse staffing and patient outcomes. Little research has been conducted to compare these measures based on their explanatory power as predictors of nursing-sensitive outcomes. In this study, both administrative and nurse-reported measures were examined. Administrative measures included registered nurse (RN) skill mix and three versions of nursing hours per patient day (HPPD); nurse-reported measures included RN-reported number of assigned patients and RN-perceived staffing adequacy. To examine correlations among six nurse staffing measures and to compare their explanatory power in relation to unit-acquired pressure ulcers (UAPUs). Descriptive, correlational study. 2397 nursing units in 409 U.S. acute care hospitals. Random-intercept logistic regression analyses were performed using 2011 data from a national database. Relationships between nurse staffing measures and UAPU occurrences were examined in eight models, each with one or more staffing measures as predictors. Characteristics of nursing units (RN workgroup education level and RN workgroup unit tenure) and hospitals (size, teaching status, and Magnet status) were included as control variables. Two versions of HPPD (total nursing HPPD and RN HPPD) and RN skill mix were significantly correlated with RN-reported number of assigned patients (r range=-0.87 to -0.75). These staffing measures had weaker correlations with RN-perceived staffing adequacy (r range=0.16 to 0.23). Of the six staffing variables, only RN-perceived staffing adequacy and RN skill mix were significantly associated with UAPU odds, the former being the better predictor. Although RN-perceived staffing adequacy was not highly correlated with administrative measures of HPPD and RN skill mix, it was the strongest predictor of UAPU occurrences. RN-perceived staffing adequacy can serve as a more appropriate measure of staffing for nursing-sensitive outcomes research than

  19. In vitro therapy study combined with low doses of radiation (Rn-222) and chemotherapy (taxol); Estudio in vitro de terapia combinada con bajas dosis de radiacion (Rn-222) y quimioterapia (taxol)

    Energy Technology Data Exchange (ETDEWEB)

    Soto, J.; Sainz, C.; Cos, S.; Gonzalez-Lamuno, D. [Universidad de Cantabria, Santander (Spain). Facultad de Medicina

    2004-07-01

    A study was carried out to test the possibility that breast cancer cells show increased sensitivity to the chemotherapeutic agent taxol when they have been treated with low radiation doses from the gas radon. To this end, the cells were cultivated in a medium containing dissolved radon and then in a second medium containing a concentration of taxol. After the culture phase the surviving cells were counted and their viability was assessed. The results obtained indicate that the cells treated with low doses of radon exhibit increased sensitivity when treated with certain concentrations of taxol; in particular a lower survival rate and lower viability were observed in cells treated with radon and 50 nM of taxol in cells treated with the same concentration of taxol alone. These effects seem to result from the influence of the radon on the expression of apoptosis -related genes, which is complementary to the action of taxol on bcl-x related genes. (author)

  20. Evolution of {sup 222} Rn and chemical species related with eruptive processes of the Popocatepetl volcano; Evolucion de {sup 222} Rn y especies quimicas relacionadas con procesos eruptivos del volcan Popocatepetl

    Energy Technology Data Exchange (ETDEWEB)

    Aranda Z, P

    1998-10-01

    The study of the water quality for human consumption has always been great importance, considering the factors that can affect water quality as aquifers recharge and underground permeability. In this work, the behavior of three water springs related with the Popocatepetl volcano were studied within April 1997 and March 1998. The spring in Paso de Cortes in the municipality of Amecameca, State of Mexico, and the springs of Atlimeyaya and Axocopan in Atlixco, State of Puebla; the water of these last two springs is used for human consumption. The content of radon in water was determined by means of liquid scintillation, and a concentration of 1.22 Bq/l was found in the spring of Atlimeyaya, which represents 2 % of the maximum permissible level established by ICRP. A significant increase was observed in the Paso de Cortes spring in the month of July 1997. The content of radium, was determined by means of gamma spectrophotometry and small quantities of this element (<0.11 Bq/l) were found. Water chemical analysis also included usual physical-chemical parameters determination by means of conventional methods. The spring of Axocopan, was found to have the major level of minerals, followed by Atlimeyaya and finally the Paso de Cortes spring, which is supplied by recent infiltrated water. Fluoride level showed a peak high level in concentration during the months of October and November, time in which infiltration due to rain is low; concentration level found was above the maximum permissible level established by Mexican authorities for this compound. The other chemical species determined were: Ca{sup 2+} , Mg{sup 2+} , K{sup +}, Na{sup +}, H C O{sub 3} {sup -} , Cl{sup -} , S O{sub 4} {sup -} {sup 2} , Li, B, Sc, Ti, V, Rb, Sr and Ba, primarily, which did not show any significant variation with the change of seasons. No important variations in the concentration of radon, radium or for other volcanic activity related species were found in the entire study. (Author)

  1. FloCon 2011 Proceedings

    Science.gov (United States)

    2011-01-01

    0. 08 0. 10 Nonzero Mobility Score P ro ba bi lit y 1e−09 1e−07 1e−05 0.001 0.1 10 1000 1e+05 Graph |I | |H| %a` RN RE G 667033 172283 1.00 3.87 4.56...COT 10127Q010 12:36 COT 100 80 -:::. 60 ~ -40 .c (’Ill .c 0 20 ... Q. 0 m. t echnologies High quality anomalies can be found without...l , , Tvoes ’ :0 ~ ~ , : : : , , , Date co cor m. t echnologies Customer Example 3: Malware Outbreak • R•pon R•suln m ~· AIIdr

  2. The Rn-222 with natural tracer in the study of natural gas transport within sterile cells of mining; O Rn-222 como tracador natural no estudo de transporte de gases no interior de pilhas de estereis de mineracao

    Energy Technology Data Exchange (ETDEWEB)

    Chagas, Eduardo G.L. das; Dias, Danila C.S.; Guerrero, Eder T. Z.; Alberti, Heber L.C.; Couto, Jeferson A.; Silva, Nivaldo C., E-mail: duglchagas@hotmail.com, E-mail: ncsilva@cnen.gov.br [Comissao Nacional de Energia Nuclear (LAPOC/CNEN-MG), Pocos de Caldas, MG (Brazil). Laboratorio de Pocos de Caldas; Braz, Marcelo L. [Universidade Federal de Alfenas (UNIFAL), Pocos de Caldas, MG (Brazil); Abreu, Carolina B. [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil); Lopez, Dina [Universidade de Ohio (United States); Branco, Otavio [Universidade Federal de Juiz de Fora (UFJF), MG (Brazil); Fleming, Peter M. [Centro de Desenvolvimento de Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2013-07-01

    The objectives of this work are mapping of Rn-222 concentration in the interstitial air of the cell 4 (BF-4) barren of uranium mining in the Industrias Nucleares do Brasil (INB), Pocos de Caldas, MG - Brazil, as well as build an automatic system for collection of interstitial gases.

  3. 关于RN上非齐次Kirchhoff方程的注记%A Note on a Nonhomogeneous Kirchhoff Equation on RN

    Institute of Scientific and Technical Information of China (English)

    陈尚杰; 李麟

    2012-01-01

    运用临界点理论中的Ekeland变分原理研究了非齐次Kirchhoff方程-(1+b ∫RN | ▽u|2dx)△u+V(x)u=f(u)+h(x) x∈RN解的存在性,其中V∈C(RN,R)满足inf x∈RN V(x)≥a1>0,这里a1>0是一个常数,更进一步,对每个M>0,meas({x∈RN:V(x)≤M})<∞,这里meas表示RN中的Lebesgue测度;f∈C(R,R+),f(0)=0,并且f(z)≡0当z<0; lim z→0 f(z)/z=0,lim z→+∞f(z)/z=l<+∞.%The existence of the nontrivial solutions for the nonhomogeneous Kirchhoff equation -(1 + b∫RN ∣▽u |2dx)▽u + V(x)u= f(u)+h(x) x ∈ RN is proved by using the Ekeland's variational principle in critical point theory,wherein V and / meet the fol lowing conditions; V∈C(RN,R) satisfies inf V(x)≥a>0,where a1 is a constant. Moreover,for every x∈RN M>0,meas ({x ∈ RN : V(x) ≤M}) <∞,where meas denotes the Lebesgue measure in RN; /f∈ C(R,R+),/(0)=0 and f(z)=0 when z<0; lim/z→∞f(z)/z=0,limz→+∞f(z)/z=l< +∞.

  4. Cementos con cenizas volantes

    Directory of Open Access Journals (Sweden)

    Ossa M., Mauricio

    1984-03-01

    additions of 20 and 30% .

    Casi la generalidad de los estudios realizados sobre cementos con adición de cenizas volantes se refieren a sus características y comportamiento en pastas, morteros y hormigones, siempre en relación con aquéllos del cemento portland. Esta vez, se desarrolló un trabajo experimental orientado a relacionar entre sí los cementos con adiciones de cenizas volantes y de puzolana natural. Para ello se fabricaron a escala de laboratorio cementos de ambos tipos, empleando como materias primas comunes clinker y yeso y, como variables, diferentes porcentajes de las dos adiciones, que cumplieron previamente los requisitos normalizados en cuanto a sus actividades puzolánicas. La calidad de los cementos fabricados resultó adecuada y concordante con la del cemento portland-puzolánico obtenido a escala industrial con los mismos clinker, yeso y puzolana natural de este estudio. Posteriormente, se determinaron las características de los cementos experimentales y se confeccionaron morteros normales para la realización de ensayos físicos y mecánicos. Los resultados de ensayos indicaron que los cementos con adición de cenizas volantes (CCV requieren menos agua para consistencia normal, presentan tiempos de fraguado mayores y expansiones en autoclave menores que los cementos con adición de puzolana (CP. Los calores de hidratación a 7 y 28 días de edad fueron aproximadamente similares para ambos tipos de cemento. En morteros normales, los cementos CCV mostraron menor retracción de secado, mayor retentividad y mayor fluidez (para igual cantidad de agua que los cementos CP. En los ensayos de exudación se observó que ésta depende más de la finura que el tipo de adición. Finalmente, los ensayos mecánicos señalaron que las resistencias a compresión y flexotracción de los morteros con cementos CCV son menores a edades inferiores que 14 días (del orden de 5 a 10% a un día de edad, pero que a partir de entonces pasan a ser mayores que las de

  5. Studying {sup 222}Rn exhalation rate from soil and sand samples using CR-39 detector

    Energy Technology Data Exchange (ETDEWEB)

    Shafi-ur-Rehman [Pakistan Institute of Engineering and Applied Sciences (PIEAS), P.O. Nilore, Islamabad (Pakistan); Matiullah [Pakistan Institute of Engineering and Applied Sciences (PIEAS), P.O. Nilore, Islamabad (Pakistan)]. E-mail: matiullah@pieas.edu.pk; Shakeel-ur-Rehman [Pakistan Institute of Engineering and Applied Sciences (PIEAS), P.O. Nilore, Islamabad (Pakistan); Rahman, Said [Pakistan Institute of Engineering and Applied Sciences (PIEAS), P.O. Nilore, Islamabad (Pakistan)

    2006-07-15

    Accurate knowledge of exhalation rate plays an important role in characterization of the radon source strength in building materials and soil. It is a useful quantity to compare the relative importance of different materials and soil types. Majority of houses in Pakistan are mainly constructed from soil and sand. Therefore, studies concerning the determination of radon exhalation rate from these materials were carried out using CR-39 based NRPB radon dosimeters. In this context, samples were collected from different towns of the Bahawalpur Division, Punjab and major cities of NWFP. After treatment, samples were placed in plastic containers and dosimeters were installed in it at heights of 25cm above the surface of the samples. These containers were hermetically sealed and stored for three weeks to attain equilibrium between {sup 222}Rn and {sup 226}Ra. After exposure to radon, CR-39 detectors were etched in 25% NaOH at 80 deg. C for 16h. From the measured radon concentration values, {sup 222}Rn exhalation rates were determined. It ranged from 1.56 to 3.33Bqm{sup -2}h{sup -1} for the soil collected from the Bahawalpur Division and 2.49-4.66Bqm{sup -2}h{sup -1} for NWFP. The {sup 222}Rn exhalation rates from the sand samples were found to range from 2.78 to 20.8Bqm{sup -2}h{sup -1} for the Bahawalpur Division and from 0.99 to 4.2Bqm{sup -2}h{sup -1} for NWFP. {sup 226}Ra contents were also determined in the above samples which ranged from 28 to 36.5Bqkg{sup -1} in the soil samples collected from the Bahawalpur Division and from 40.9 to 51.9Bqkg{sup -1} in the samples collected from NWFP. In sand samples, {sup 226}Ra contents ranged from 49.2 to 215Bqkg{sup -1} and 22.6-27Bqkg{sup -1} in the samples collected from the Bahawalpur Division and NWFP, respectively. {sup 226}Ra contents in these samples were also determined using HPGe detector. The results of both the techniques are in good agreement within experimental errors.

  6. Evaluation of patients with headache due to spontaneous intracranial hypotension by RN cisternography

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Su Zy; Park, Chan Hee; Soo, Joo In; Pai, Moon Sun; Yoon, Suk Nam; Kim, Jang Sung [College of Medicine, Ajou Univ., Suwon (Korea, Republic of)

    1997-07-01

    Spontaneous intracranial hypotension (SIH) typically occurs without an obvious cause. However, it can be seen following the lumbar puncture, craniotomy, or spinal surgery. Also listed are contributing factors such as sneezing, coughing, intercourse or minor fall. Spontaneous spinal CSF leaks are not common, but are now increasingly recognized as a cause of postural headache associated with intracranial hypotension. The purpose of our study was to evaluate the role of RN cisternography in the diagnosis of SIH cuased by spinal CSF leakage. Four patients with clinical suspicion of SIH (Group I) and six patients as normal control (Group II) underwent RN cisternography. RN cisternography in Group II was done for various reasons, such as hydrocephalus, syringomyelia and memory loss. Group I consisted of the patients who presented with postural headache, as well as additional symptoms, such as nausea, vomiting, dizziness, tinnitus and eyeball pain. The age range of these patients was 27 - 67 years. Lumbar puncture and CSF examinations were performed in Group I more than once and showed typical findings of low CSF pressure and slightly elevated protein level. Brain MRI (4/4), Cervico-thoracic spine MRI (3/4) were also performed. On gadolinium-enhanced brain MRI, enhancement of the meninges which is the most characteristic radiographic finding in intracranial hypotension was found in all patients of Group I. But, cervico-thoracic spin MRI was nonspecific. None of Group I had contrast myelography because of the patient's refusal. Group I and Group II underwent radionuclide cisternography following lumbar subarachnoid injection of 99mTc-DTPA (1-2mCi). The scans were taken in 2, 5, 24 hours later using single head gamma camera equipped with LEAP. Entire spinal region in posterior view and head in frontal and lateral views were obtained. The cisternography of Group I showed the CSF leakage or diverticulum at the level of cervico-thoracic junction(3/4) and mid

  7. Characterizing the statistical structure of bathymetry and topography as a Matérn process

    Science.gov (United States)

    Simons, Frederik J.; Olhede, Sofia C.; Eggers, Gabe L.; Lewis, Kevin W.

    2014-05-01

    Describing and classifying the statistical structure of topography and bathymetry is of much interest across the geophysical sciences. Oceanographers are interested in the roughness of seafloor bathymetry as a parameter that can be linked to internal-wave generation and mixing of ocean currents. Tectonicists are searching for ways to link the shape and fracturing of the ocean floor to build detailed models of the evolution of the ocean basins in a plate-tectonic context. Geomorphologists are building time-dependent models of the surface that benefit from sparsely parameterized representations whose evolution can be described by differential equations. Geophysicists seek access to parameterized forms for the spectral shape of topographic or bathymetric loading at various (sub)surface interfaces in order to use the joint structure of topography and gravity for inversions for the effective elastic thickness of the lithosphere. Planetary scientists are in need of robust terrain-classification models to help unravel the cratering history and tectonic evolution of planetary surfaces, for the selection of suitable landing sites, and for purposes as mundane as the prediction of wear and tear on rover wheels. Finally, statisticians, mathematicians and computer scientists are interested in the analysis of texture for purposes of out-of-sample prediction, extension, and in-painting for application in fields as diverse as computer graphics and medical imaging. A unified geostatistical framework for the description, characterization and study of surfaces of these various kinds and for such a multitude of applications is via the Matérn process, a theoretically well justified and mathematically attractive parameterized form for the spectral-domain covariance of Gaussian processes, both in isotropic form and considering various geometrical kinds anisotropy. We discuss a constructive new estimation technique to find the parameters of the Matérn forms of topography and bathymetry

  8. Calibration of a degassing-emanation line for 222Rn determination in seawater samples; Calibracao de uma linha de emanacao para determinacao de {sup 222}Rn em amostras de agua do mar

    Energy Technology Data Exchange (ETDEWEB)

    Farias, Luciana Aparecida

    2002-07-01

    The purpose of this study is to calibrate a degassing-emanation line and to determine {sup 222}Rn and {sup 226}Ra activity concentrations in seawater samples. This methodology, also called Lucas method, consists in the extraction of radon (originally dissolved in seawater), collection of the gas in a liquid nitrogen cold trap and transfer from the trap to an alpha scintillation cell. Total extraction efficiencies of the 4 degassing-emanation systems were determined by measuring {sup 226}Ra reference solutions. The efficiencies obtained for these 4 systems varied from 21 % to 62%. This work also presents preliminary results of a study carried out in a series of small embayements of Ubatuba, Sao Paulo State-Brazil: Flamengo Bay, Fortaleza Bay, Mar Virado Bay and Ubatuba Bay. Concentration of Rn in excess varied from 0,011 to 0,317 Bq/L for Flamengo Bay, from 0,009 to 0,130 Bq/L for Fortaleza Bay, from 0,018 to 0,050 Bq/L for Mar Virado Bay and from 0,004 to 0,120 Bq/L for Ubatuba Bay. The results obtained for the concentration of {sup 222}Rn in excess in a transect at Flamengo Bay varied from 0,002 to 0,036 Bq/L. Higher concentrations of {sup 222}Rn in excess were obtained in Flamengo Bay, Fortaleza Bay and Ubatuba bay. It was also observed that the concentration of {sup 222}Rn in excess increases with depth, as expected. (author)

  9. Nursing Transition: An Individualized Course To Promote Mobility from the LVN to RN Role. Registered Nurse Shortage Project. Final Report.

    Science.gov (United States)

    Irwin, Marcia; Malague, Marianne

    To address a regional shortage of registered nurses (RN's), a special transition course was developed at the North Harris Montgomery Community College District in Houston, Texas, to allow licensed vocational nurses to articulate into the second year of a two-year Associate Degree Nursing (ADN) program. Students completing the ADN program are…

  10. Early Start Denver Model - intervention for de helt små børn med autisme

    DEFF Research Database (Denmark)

    Brynskov, Cecilia

    2015-01-01

    Early Start Denver Model (ESDM) er en autismespecifik interventionsmetode, som er udviklet til helt små børn med autisme (0-4 år). Metoden fokuserer på at styrke den tidlige kontakt og barnets motivation, og den arbejder målrettet med de socio-kommunikative forløbere for sprog og med den tidlige...

  11. Towards a geometric interpretation of generalized fractional integrals - Erdelyi-Kober type integrals on $R^N$ as an example

    CERN Document Server

    Herrmann, Richard

    2014-01-01

    A family of generalized Erdelyi-Kober type fractional integrals is interpreted geometrically as a distortion of the rotationally invariant integral kernel of the Riesz fractional integral in terms of generalized Cassini ovaloids on $R^N$. Based on this geometric view, several extensions are discussed.

  12. Assessment of (222)Rn emanation from ore body and backfill tailings in low-grade underground uranium mine.

    Science.gov (United States)

    Mishra, Devi Prasad; Sahu, Patitapaban; Panigrahi, Durga Charan; Jha, Vivekanand; Patnaik, R Lokeswara

    2014-02-01

    This paper presents a comparative study of (222)Rn emanation from the ore and backfill tailings in an underground uranium mine located at Jaduguda, India. The effects of surface area, porosity, (226)Ra and moisture contents on (222)Rn emanation rate were examined. The study revealed that the bulk porosity of backfill tailings is more than two orders of magnitude than that of the ore. The geometric mean radon emanation rates from the ore body and backfill tailings were found to be 10.01 × 10(-3) and 1.03 Bq m(-2) s(-1), respectively. Significant positive linear correlations between (222)Rn emanation rate and the (226)Ra content of ore and tailings were observed. For normalised (226)Ra content, the (222)Rn emanation rate from tailings was found to be 283 times higher than the ore due to higher bulk porosity and surface area. The relative radon emanation from the tailings with moisture fraction of 0.14 was found to be 2.4 times higher than the oven-dried tailings. The study suggested that the mill tailings used as a backfill material significantly contributes to radon emanation as compared to the ore body itself and the (226)Ra content and bulk porosity are the dominant factors for radon emanation into the mine atmosphere.

  13. PERCEPÇÃO AMBIENTAL DE MORADORES DO BAIRRO NOVA PARNAMIRIM EM PARNAMIRIM/RN SOBRE SANEAMENTO BÁSICO

    Directory of Open Access Journals (Sweden)

    Maria Cândida Cunha

    2015-02-01

    iminente no processo de urbanização e desenvolvimento de um local. O bairro de Nova Parnamirim em Parnamirim/RN se destacou nos últimos 20 anos pelo acelerado crescimento populacional, urbanístico e de infraestrutura, porém, enfrenta graves problemas relacionados ao saneamento básico, especialmente esgotamento sanitário e drenagem urbana.

  14. Characterizing a shallow groundwater system beneath irrigated sugarcane with electrical resistivity and radon (Rn-222), Puunene, Hawaii

    Science.gov (United States)

    In this study, we use a combination of electrical resistivity profiling and radon (222Rn) measurements to characterize a shallow groundwater system beneath the last remaining, large-scale sugarcane plantation on Maui, Hawaii. Hawaiian Commercial & Sugar Company has continuously operated a sugarcane...

  15. National survey on the natural radioactivity and Rn-222 exhalation rate of building materials in the Netherlands

    NARCIS (Netherlands)

    de Jong, P.; van Dijk, W.; van der Graaf, E.R.; de Groot, A.V.

    2006-01-01

    The present study reports on results of a nationwide survey on the natural radioactivity concentrations and Rn-222 exhalation rates of the prevailing building materials in the Netherlands. In total 100 samples were taken and analyzed for the activity concentrations of Ra-226, Ra-228, Th-228, and K-4

  16. National survey on the natural radioactivity and Rn-222 exhalation rate of building materials in the Netherlands

    NARCIS (Netherlands)

    de Jong, P.; van Dijk, W.; van der Graaf, E.R.; de Groot, A.V.

    2006-01-01

    The present study reports on results of a nationwide survey on the natural radioactivity concentrations and Rn-222 exhalation rates of the prevailing building materials in the Netherlands. In total 100 samples were taken and analyzed for the activity concentrations of Ra-226, Ra-228, Th-228, and K-4

  17. Gaussian likelihood inference on data from trans-Gaussian random fields with Matérn covariance function

    KAUST Repository

    Yan, Yuan

    2017-07-13

    Gaussian likelihood inference has been studied and used extensively in both statistical theory and applications due to its simplicity. However, in practice, the assumption of Gaussianity is rarely met in the analysis of spatial data. In this paper, we study the effect of non-Gaussianity on Gaussian likelihood inference for the parameters of the Matérn covariance model. By using Monte Carlo simulations, we generate spatial data from a Tukey g-and-h random field, a flexible trans-Gaussian random field, with the Matérn covariance function, where g controls skewness and h controls tail heaviness. We use maximum likelihood based on the multivariate Gaussian distribution to estimate the parameters of the Matérn covariance function. We illustrate the effects of non-Gaussianity of the data on the estimated covariance function by means of functional boxplots. Thanks to our tailored simulation design, a comparison of the maximum likelihood estimator under both the increasing and fixed domain asymptotics for spatial data is performed. We find that the maximum likelihood estimator based on Gaussian likelihood is overall satisfying and preferable than the non-distribution-based weighted least squares estimator for data from the Tukey g-and-h random field. We also present the result for Gaussian kriging based on Matérn covariance estimates with data from the Tukey g-and-h random field and observe an overall satisfactory performance.

  18. Eesti idapiiri läbilaskevõimel on kolmekordne varu / Peeter Pärn ; intervjueerinud Tanel Raig

    Index Scriptorium Estoniae

    Pärn, Peeter

    2009-01-01

    Eesti Rahvusvahelise Autovedajate Assotsiatsiooni president ja NBI Ekspeditsiooni juht Peeter Pärn vastab küsimustele, mis puudutavad ooteaegade lühendamist piiril, elektroonse piirijärjekorra süsteemi kasutamist, Eesti idapiiri läbilaskevõimet, uute piiriületuspunktide rajamist Eesti-Vene piirile ning autotranspordi teenuste nõudlust. Tabel, graafik

  19. Atender con ansiedad

    Directory of Open Access Journals (Sweden)

    Alberto Acosta

    2009-10-01

    Full Text Available Tener una personalidad ansiosa o estar ansioso en una determinada situación hace que atendamos de modo diferente a lo que acontece. Investigaciones recientes están descubriendo las relaciones específicas de la ansiedad-rasgo y de la ansiedad-estado con diferentes procesos atencionales. La intervención terapéutica para aliviar los trastornos de ansiedad, tan frecuentes en nuestra época, se va a beneficiar de este conocimiento.

  20. Arquitectura con discurso

    OpenAIRE

    Schaposnik, Viviana

    2001-01-01

    En particular a la Carrera Arquitectura le compete un doble rol social: uno general, "educar" desde la Universidad y otro, específico, el que le es propio: dar respuesta a las necesidades planteadas por la sociedad haciéndole su lugar: construyéndolo junto con ella. Aparece la figura del "alumno de arquitectura"' nuestro destinatario específico. El alumno de arquitectura, también deberá tomar conciencia, entender, que el "espacio" que él deberá dominar a través d...