WorldWideScience

Sample records for frecuente al orl

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

    Directory of Open Access Journals (Sweden)

    Manuel Mallol Simmonds

    2017-07-01

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

  2. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    Les localisations ORL extra ganglionnaires de la tuberculose sont peu communes. La symptomatologie clinique ... peuse, posant ainsi le problème de diagnostic différentiel avec la pathologie tumorale. ... of tuberculosis treated in ENT department of the Fattouma Bourguiba hospital of Monastir between 1995 and 2009. The.

  3. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    le cancer des VADS ainsi que ses thérapies, la recherche ... les cancers des VADS, il faut commencer très précocement avant même ... support should always be preferred. ... D'une manière générale, la tumeur se développe quelque .... patients pris en charge en ORL pour cancer des VADS .... Evaluation nutritionnelle.

  4. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    et associé à une érosion du mur de la logette et de lʼos temporal ( Fig1). Lʼimagérie en résonnance magnétique (IRM) confirme la lésion tissulaire du conduit auditif externe gauche éten- due à lʼ lʼoreille moyenne avec envahissement de la paro-. J. TUN ORL - N° 24 JUIN 2010. 87. SARCOME DʼEWING DU ROCHER.

  5. Revista ORL at Open Science Ecosystem

    Directory of Open Access Journals (Sweden)

    Tránsito FERRERAS FERNÁNDEZ

    2018-05-01

    Full Text Available In October 2017 they were held at the University of Salamanca the congress Open Knowledge Ecosystems (ACE 2017 posed as an international meeting point for specialists in open access. The congress allowed to approach the open knowledge from the perspectives I + D + i, offering papers and communications on research related to Open Access, as well as experiences developed in repositories and institutions and approaches to innovative trends in any of the fields of open knowledge.The experience of Revista ORL was present in ECA 2017 through a joint communication of several authors titled Nuevas vías de publicación para revistas biomédicas. Proyecto Revista ORL de Ediciones Universidad de Salamanca, offering an overview of the history of the Revista as an open edition project. Although on that occasion it was called a project, now we should call it "reality" fully consolidated because the data on results obtained.Open Science represents a paradigm change in the way to make science. Although this doesn't change substantially with respect to its motivations and objectives, it changes its methods. The change lies in how it is done, not in what is done. It is an open science, collaborative and made with and for society.The concept of Open Science has been preceded by Open Access to academic content and this may have conditioned its understanding. Open Access has been assimilated only with open access to articles, while with Open Science it is considered that what must be open is any research result (articles + data as well as the auxiliary instruments used (for example, laboratory notebooks. However, the double meaning of "open" (free and free is the same for the two concepts.In this paper we pose questions such as What is Open Science? What are the motivations of governments for its promotion? What components does make up this ecosystem? What are the implications for agents of scientific research? What does represent all this for the edition of

  6. Modification of parotids in case of conformal ORL irradiation

    International Nuclear Information System (INIS)

    Louvel, G.; Lafond, C.; Manens, J.P.; Jouyaux, F.; Williaume, D.; Le Prise, E.; Crevoisier, R. de; Cazoulat, G.; Simon, A.; Haigron, P.

    2009-01-01

    The objective of the study is to analyze the anatomical modifications of the parotids in case of tumors irradiation of the O.R.L. area. In case of irradiation of the O.R.L. area the parotids reduce about one third of their volume, by moving inwards and backwards. The dose received by these glands at the end of irradiation can be different from this one initially planned. (N.C.)

  7. GHG monitoring over Paris megacity and Orléans forest

    Science.gov (United States)

    Te, Y. V.; Jeseck, P.; Zanon, T.; Boursier, C.; Janssen, C.; Deutscher, N. M.; Warneke, T.; Notholt, J.; Lac, C.; Dieudonné, E.; Lopez, M.; Schmidt, M.; Xueref-remy, I. C.

    2012-12-01

    In a growing world with more than 7 billion inhabitants and big emerging countries such as China, Brazil and India, emissions of anthropogenic pollutants and greenhouse gases (GHGs) are increasing continuously. Their monitoring and control in megacities have become a major challenge for scientists and public health authorities in environmental research area. The ground-based Fourier transform spectrometer (QualAir FTS[a], model IFS 125HR) of the QualAir platform located in downtown Paris at University Pierre et Marie Curie (UPMC), is a scientific research instrument dedicated to the survey of greenhouse gases (GHGs) and urban air quality. Equipped with a sun-tracker, the remote sensing QualAir FTS relies on solar infrared absorption for monitoring trace gas concentrations and their variability in the Ile-de-France region[b]. Concentrations of atmospheric GHGs, especially CO2, CH4 and N2O, are retrieved by the radiative transfer model PROFFIT[c]. Because Paris is the third largest European megacity, the QualAir FTS can provide new and complementary measurements as compared to existing ground-based FTS network stations (NDACC and TCCON) located in unpolluted environments, such as the TCCON-Orléans station[d] situated in the forest of Orléans (100 km south of Paris). In the effort to integrate QualAir FTS into the TCCON network, simultaneous FTS measurements of GHGs at Paris and Orléans have been performed. We will emphasize on comparisons of CO2 from these two sites. Our comparison will be completed by high-resolved direct CO2 modeling outputs from the Meso-NH model, and ground in situ measurements at different sites (Orléans/Trainou, Paris/Jussieu, Paris/Eiffel Tower). Parts of the data were acquired in the framework of the French CO2-MEGAPARIS project[e, f], whose main goal is to quantify CO2 emissions from the Paris area. The present data intercomparison will help to reduce uncertainties in carbon cycle models and to better characterize regional GHG fluxes

  8. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    688-93. 18. Gordin A., Golz A., Daitzchman M. et al. Fluorine-18 fluorodesoxyglucose positron emission tomography/computed tomography imaging in patients with carcinoma of the nasopharynx: diagnostic accuracy and impact on clinical management. International Journal of Radiation Oncology BiologyPhysics in press.

  9. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    35- Mtasiwa DM, Imamura N, Inda T et al. Immunophenotype, histology and cli- nical stage: their predictive value in the prognosis of non Hodgkin's lymphomas. Hiroshima J Med Sci 1990; 39(4): 95-102. 36- Hutchison RE, Berard CW, Shuster JJ, Link MP, Pik TE, Murphy SB; B-cell lineage confers a favorable outcome ...

  10. la tuberculose extra-ganglionnaire de la sphere orl extranodal ent ...

    African Journals Online (AJOL)

    16 juin 2006 ... EXTRANODAL ENT TUBERCULOSIS. K. MIGHRI, I. LAHMAR , B. HAMMAMI, M. JLAIEL, A. MOUSSA, N. DRISS. SERVICE O.R.L. CHU TAHAR SFAR MAHDIA. RESUME. La tuberculose extra ganglionnaire est une pathologie rare en ORL. Elle pourrait poser des problèmes diagnostiques sur- tout avec la ...

  11. seasonal variation in water quality of orle river basin, sw nigeria.

    African Journals Online (AJOL)

    LUCY

    The seasonal variation of water quality of Orle River and its tributatries in S.W. Nigeria was investigated forthnightly or two ... KEYWORD: water quality, river basin, wet and dry seasons; pollution. ..... Environmental Modeling and Software,.

  12. Términos en inglés de uso frecuente y su significado en medicina

    Directory of Open Access Journals (Sweden)

    Iris Caridad Hernández Barro

    Full Text Available Teniendo en cuenta que en la Universidad de Ciencias Médicas no son suficientes los documentos para la enseñanza del inglés con fines generales y específicos, surgió la idea de elaborar un material de consulta que sirviera de apoyo al proceso de enseñanza-aprendizaje y facilitara, además, la comunicación, la traducción y la interpretación del lenguaje médico, por parte de los estudiantes de medicina, principalmente de cuarto y quinto años, así como de profesionales de la salud. A tales efectos, se realizó una revisión bibliográfica exhaustiva y se obtuvo un material de 6 páginas, con términos de uso frecuente y su significado en medicina

  13. El reflujo faringolaringeo en la Esfera O.R.L.

    OpenAIRE

    Faubel Serra, Marta

    2011-01-01

    El término reflujo viene del griego y significa flujo de “vuelta” o “de “regreso”. El Reflujo Gastro-Esofágico (RGE) un hecho fisiológico que consiste en el paso de contenido gástrico hacia el esófago, sin nauseas ni vómitos. Es muy frecuente en los tres primeros meses de vida, siendo fisiológico por la inmadurez del esfínter esofágico inferior (EEI). El Recién Nacido presenta regurgitaciones tras las comidas y de forma postural, sin significado patológico. La mayoría (60 %) de...

  14. Análisis Comparativo de Algoritmos de Minería de Subgrafos Frecuentes

    Directory of Open Access Journals (Sweden)

    Santiago Bianco

    2016-06-01

    Full Text Available Gracias a las posibilidades que ofrecen a la hora de representar información y la abstracción conceptual que permiten manejar, los grafos son ampliamente utilizados en investigaciones relacionadas con la informática. A medida que se fueron incrementando las aplicaciones de estas estructuras, la complejidad de los elementos a representar y el volumen de información manejado, aparece la necesidad de utilizar procesos eficientes para extraer información o patrones ocultos en esa gran masa de datos, por lo que se comienza a aplicar la minería de grafos. Dentro las técnicas de minería de grafos se encuentra la búsqueda de subgrafos frecuentes, utilizada para reconocer subestructuras comunes entre un conjunto de grafos. En los últimos años se han llevado a cabo varias investigaciones que resuelven este problema, generando algoritmos diversos aplicando distintos enfoques, entre los cuales se encuentran el FSG, FFSM, gSpan y GASTON. El objetivo de este artículo es analizar el comportamiento de estos algoritmos a través de distintos experimentos diseñados para identificar si existe un algoritmo superior al resto y, en caso de que no lo haya, poder definir en qué escenarios es más recomendable la elección de cada uno.

  15. Spatio-Temporal Variation in Water Quality of Orle River Basin, S.W. ...

    African Journals Online (AJOL)

    Spatio-Temporal Variation in Water Quality of Orle River Basin, S.W. Nigeria. ... Abstract. The water quality of small streams in Auchi area of Edo State, S.W. Nigeria was investigated with a view to ... and ecosystems. The study was carried out

  16. La tuberculose extra-ganglionnaire de la sphere O.R.L. | Mighri ...

    African Journals Online (AJOL)

    Conclusion : La tuberculose extra-ganglionnaire en ORL pose surtout des problèmes diagnostiques. Son diagnostic est le plus souvent histo-pathologique. Son traitement repose sur la himiothérapie anti-tuberculeuse. Extra-nodal tuberculosis is a rare in ENT practice. We report 10 cases of extra-ganglionic localizations of ...

  17. Investigation of dose modifications related to dental cares in an ORL radiotherapy treatment

    International Nuclear Information System (INIS)

    De Conto, C.; Gschwind, R.; Makovicka, L.; De Conto, C.; Martin, E.

    2010-01-01

    The authors report the investigation of the influence of dental implants on the dose received during an ORL radiotherapy treatment in order to optimize both the dosimetric planning and the patient radioprotection. They report experimental measurements performed on a phantom representing a lower jaw in irradiation conventional conditions. Then, they report the Monte Carlo simulation of the dose distribution in the phantom using the BEAMnrc code designed for radiotherapy

  18. Apoptosis-Inducing Effect of Three Medicinal Plants on Oral Cancer Cells KB and ORL-48

    Directory of Open Access Journals (Sweden)

    Mohd Zabidi Majid

    2014-01-01

    Full Text Available Brucea javanica, Azadirachta indica, and Typhonium flagelliforme are medicinal plants commonly used to treat conditions associated with tumour formation. This study aimed to determine the antiproliferative activity of these plants extracts on KB and ORL-48 oral cancer cell lines and to suggest their mode of cell death. The concentration producing 50% cell inhibition (IC50 was determined and the activity was examined under an inverted microscope. Immunohistochemistry fluorescent staining method (TUNEL was performed to indicate the mechanism of cell death and the fragmented DNA band pattern produced was obtained for verification. Compared to Azadirachta sp. and Typhonium sp., the antiproliferative activity of Brucea sp. extract was the most potent on both KB and ORL-48 cells with IC50 of 24.37 ± 1.75 and 6.67 ± 1.15 µg/mL, respectively. Signs of cell attrition were observed 24 hr after treatment. Green fluorescent spots indicating cell death by apoptosis were observed in images of both cells following treatment with all the three extracts. DNA fragments harvested from Brucea-treated cells produced bands in a ladder pattern suggesting the apoptotic effect of the extract. It is thus concluded that Brucea sp. extract exhibited cytotoxic activity on ORL-48 cells and their action mechanism is via apoptosis.

  19. Evaluation of subsidence hazard in mantled karst setting: a case study from Val d'Orléans (France)

    Science.gov (United States)

    Perrin, Jérôme; Cartannaz, Charles; Noury, Gildas; Vanoudheusden, Emilie

    2015-04-01

    Soil subsidence/collapse is a major geohazard occurring in karst region. It occurs as suffosion or dropout sinkholes developing in the soft cover. Less frequently it corresponds to a breakdown of karst void ceiling (i.e., collapse sinkhole). This hazard can cause significant engineering challenges. Therefore decision-makers require the elaboration of methodologies for reliable predictions of such hazards (e.g., karst subsidence susceptibility and hazards maps, early-warning monitoring systems). A methodological framework was developed to evaluate relevant conditioning factors favouring subsidence (Perrin et al. submitted) and then to combine these factors to produce karst subsidence susceptibility maps. This approach was applied to a mantled karst area south of Paris (Val d'Orléans). Results show the significant roles of the overburden lithology (presence/absence of low-permeability layer) and of the karst aquifer piezometric surface position within the overburden. In parallel, an experimental site has been setup to improve the understanding of key processes leading to subsidence/collapse and includes piezometers for measurements of water levels and physico-chemical parameters in both the alluvial and karst aquifers as well as surface deformation monitoring. Results should help in designing monitoring systems to anticipate occurrence of subsidence/collapse. Perrin J., Cartannaz C., Noury G., Vanoudheusden E. 2015. A multicriteria approach to karst subsidence hazard mapping supported by Weights-of-Evidence analysis. Submitted to Engineering Geology.

  20. Diabetes mellitus en el anciano, un problema frecuente Diabetes mellitus present in elderly, a common problem

    Directory of Open Access Journals (Sweden)

    Marelys Yanes Quesada

    2009-09-01

    Full Text Available La presencia de diabetes mellitus en la población anciana es un problema de salud frecuente en la atención primaria. Es por ello que en el presente trabajo pretendemos revisar algunos elementos importantes de este tema. Esta entidad se presenta habitualmente en estos pacientes, oligosintomática o de manera atípica, y los objetivos terapéuticos dependen de la situación funcional del enfermo. En relación con el tratamiento no farmacológico, la educación, la dieta y el ejercicio físico constituyen los pilares básicos; y respecto a la terapéutica farmacológica, se deben evitar las sulfonilureas de acción prolongada y de gran potencia. Las biguanidas pueden ser usadas para mejorar la sensibilidad a la insulina, y los inhibidores de la alfa glucosidasa son los medicamentos de elección cuando predomina la hiperglucemia posprandial. Las tiazolidinedionas deben ser usadas con precaución en pacientes con riesgo cardiovascular, y el uso de insulina está indicado en circunstancias especiales. Siempre se debe tener presente el tratamiento de la comorbilidad, para así tratar integralmente al anciano con diabetes mellitus.Presence of diabetes mellitus in elderlies is a common health problem in primary care. Thus, the aim of present paper is to review some significant elements of this matter. This entity is habitually present in these patients in a olisymptomatic way of in a atypical form, and therapeutic objectives depend on functional status of patient. With regard to non-pharmacological treatment, the education, diet, and physical exercise are the main basis; and regarding the pharmacological therapeutics, sulfonylurea of lengthy action and very potent must to be avoided. Biguanides may be used to improve insulin-sensitivity, and a-glycosidase inhibitors are the choice drugs when there is a predominance of postprandial hyperglycemia. The thiazolidinediones must to be used with precaution in patients presenting with cardiovascular risk, and

  1. Remote sensing of GHG over Paris megacity and Orléans forest using ground-based QualAir FTS and TCCON-Orléans

    Science.gov (United States)

    Te, Y.; Jeseck, P.; Da Costa, J.; Deutscher, N. M.; Warneke, T.; Notholt, J.

    2012-04-01

    In a growing world with more than 7 billion inhabitants and big emerging countries such as China, Brazil and India, emissions of anthropogenic pollutants are increasing continuously. Monitoring and control of atmospheric pollutants in megacities have become a major challenge for scientists and public health authorities in environmental research area. The QualAir platform at University Pierre et Marie Curie (UPMC), is an innovating experimental research platform dedicated to survey greenhouse gases (GHGs) and urban air quality. As one of the major instruments of the QualAir platform, the ground-based Fourier transform spectrometer (QualAir FTS, IFS 125HR model) analyses the composition of the urban atmosphere of Paris, which is the third European megacity. The continuous monitoring of atmospheric pollutants is essential to improve the understanding of urban air pollution processes. Associated with a sun-tracker, the QualAir remote sensing FTS operates in solar infrared absorption and enables to monitor many trace gases, and to follow up their variability in the Ile-de-France region. A description of the QualAir FTS will be given. Concentrations of atmospheric GHG, especially CO2 and CH4, are retrieved by the radiative transfer model PROFFIT. Located in the centre of Paris, the QualAir FTS can provide new and complementary urban measurements as compared to unpolluted ground-based stations of existing networks (NDACC and TCCON). The work made by LPMAA to join the TCCON network will also be presented. TCCON-Orléans is a ground-based FTS of the TCCON network located in the forest of Orléans (100 km south of Paris). Preliminary comparisons of GHGs measurements from both sites will be shown. Such ground-based information will help to better characterize regional GHGs, especially regarding anthropogenic emissions and trends.

  2. Guía del investigador americanista: La Universidad de Tulane en Nueva Orleáns

    OpenAIRE

    Betancourt, Margarita Vargas

    2009-01-01

    Introducción La Universidad de Tulane se encuentra en una de las ciudades más interesantes de Estados Unidos, y probablemente, una de las ciudades norteamericanas que más se parece a las ciudades de Latino América: Nueva Orleáns. Copyright © (fotografías de Daniela Castillo y James Huck) Ejemplo de ello es que Nueva Orleáns tiene un centro histórico (el barrio francés) y una plaza o zócalo (Jackson Square). Antes de que Napoleón vendiera Luisiana a Thomas Jefferson en 1803, Nueva Orleáns fue...

  3. Aplicando minería de datos para descubrir rutas de aprendizaje frecuentes en Moodle

    OpenAIRE

    Alejandro Bogarín Vega; Cristóbal Romero Morales; Rebeca Cerezo Menéndez

    2016-01-01

    En este artículo, aplicamos técnicas de minería de datos para descubrir rutas de aprendizaje frecuentes. Hemos utilizado datos de 84 estudiantes universitarios, seguidos en un curso online usando Moodle 2.0. Proponemos agrupar a los estudiantes, en primer lugar, a partir de los datos de una síntesis de uso de Moodle y/o las calificaciones finales de los alumnos en un curso. Luego, usamos los datos de los logs de Moodle sobre cada cluster/grupo de estudiantes separadamente con el fin de poder ...

  4. Tics: los trastornos del movimiento más frecuentes en los niños

    OpenAIRE

    Ortiz Giraldo, Blair; Blazicevich Carrillo,Lucía

    2010-01-01

    Los tics son los trastornos del movimiento más frecuentes en los niños y su mayor prevalencia es en la edad escolar. La mayoría son transitorios, pero algunos pueden tener repercusiones negativas en los ámbitos escolar, familiar y social, que pueden llevar a fracaso escolar, baja autoestima y disfunción social. Algunos de los tics se relacionan con el trastorno de déficit de atención e hiperactividad (TDAH) y con otras enfermedades que requieren diagnóstico oportuno y adecuado tratamiento. En...

  5. Revitalisation of Orlík reservoir – case study of a regional restoration project

    Directory of Open Access Journals (Sweden)

    Ivana Očásková

    2014-06-01

    Full Text Available This case study describes the bottom-up formation of a regional project for restoring a reservoir. Land use changes in the upper Vltava river basin caused the eutrophication of Orlík reservoir, which resulted in water blooms, which in association with socio-economic changes caused a decline in tourism in this region and serious difficulties for local people. The study examines how public awareness helped in the establishment of a restoration project, its framework and strategy. Regional governance of the project management took into consideration both knowledge-based solutions and the interests of local people and municipalities. The project has the potential for resolving both environmental and socio-economic problems and providing a sustainable win-win strategy for the region, residents, tourists and stakeholders.

  6. Characterization of the nociceptin receptor (ORL-1) agonist, Ro64-6198, in tests of anxiety across multiple species.

    Science.gov (United States)

    Varty, G B; Hyde, L A; Hodgson, R A; Lu, S X; McCool, M F; Kazdoba, T M; Del Vecchio, R A; Guthrie, D H; Pond, A J; Grzelak, M E; Xu, X; Korfmacher, W A; Tulshian, D; Parker, E M; Higgins, G A

    2005-10-01

    Previous studies have demonstrated behaviors indicative of anxiolysis in rats pretreated with the nociceptin receptor (opioid receptor like-1, ORL-1) agonist, Ro64-6198. The aim of this study was to examine the effects of Ro64-6198 in anxiety models across three species: rat, guinea pig, and mouse. In addition, the receptor specificity of Ro64-6198 was studied, using the ORL-1 receptor antagonist, J-113397, and ORL-1 receptor knockout (KO) mice. Finally, neurological studies examined potential side effects of Ro64-6198 in the rat and mouse. Ro64-6198 (3-10 mg/kg) increased punished responding in a rat conditioned lick suppression test similarly to chlordiazepoxide (6 mg/kg). This effect of Ro64-6198 was attenuated by J-113397 (10 mg/kg), but not the mu opioid antagonist, naltrexone (3 mg/kg). In addition, Ro64-6198 (1-3 mg/kg) reduced isolation-induced vocalizations in rat and guinea pig pups. Ro64-6198 (3 mg/kg) increased the proportion of punished responding in a mouse Geller-Seifter test in wild-type (WT) but not ORL-1 KO mice, whereas diazepam (1-5.6 mg/kg) was effective in both genotypes. In rats, Ro64-6198 reduced locomotor activity (LMA) and body temperature and impaired rotarod, beam walking, and fixed-ratio (FR) performance at doses of 10-30 mg/kg, i.e., three to ten times higher than an anxiolytic dose. In WT mice, Ro64-6198 (3-10 mg/kg) reduced LMA and rotarod performance, body temperature, and FR responding, but these same measures were unaffected in ORL-1 KO mice. Haloperidol (0.3-3 mg/kg) reduced these measures to a similar extent in both genotypes. These studies confirm the potent, ORL-1 receptor-mediated, anxiolytic-like effects of Ro64-6198, extending the findings across three species. Ro64-6198 has target-based side effects, although the magnitude of these effects varies across species.

  7. Tics: los trastornos del movimiento más frecuentes en los niños

    Directory of Open Access Journals (Sweden)

    Ortiz Giraldo, Blair

    2010-12-01

    Full Text Available Los tics son los trastornos del movimiento más frecuentes en los niños y su mayor prevalencia es en la edad escolar. La mayoría son transitorios, pero algunos pueden tener repercusiones negativas en los ámbitos escolar, familiar y social, que pueden llevar a fracaso escolar, baja autoestima y disfunción social. Algunos de los tics se relacionan con el trastorno de déficit de atención e hiperactividad (TDAH y con otras enfermedades que requieren diagnóstico oportuno y adecuado tratamiento. En esta revisión sobre los tics se incluyen los siguientes aspectos: epidemiología, etiología, factores de riesgo, caracterización, enfermedades asociadas, diagnóstico, tratamiento y pronóstico.

  8. Aplicando minería de datos para descubrir rutas de aprendizaje frecuentes en Moodle

    Directory of Open Access Journals (Sweden)

    Alejandro Bogarín Vega

    2016-01-01

    Full Text Available En este artículo, aplicamos técnicas de minería de datos para descubrir rutas de aprendizaje frecuentes. Hemos utilizado datos de 84 estudiantes universitarios, seguidos en un curso online usando Moodle 2.0. Proponemos agrupar a los estudiantes, en primer lugar, a partir de los datos de una síntesis de uso de Moodle y/o las calificaciones finales de los alumnos en un curso. Luego, usamos los datos de los logs de Moodle sobre cada cluster/grupo de estudiantes separadamente con el fin de poder obtener más específicos y precisos modelos de procesos del comportamiento de los estudiantes.

  9. ERRORES FRECUENTES EN EL DIAGNÓSTICO Y TRATAMIENTO DE LOS PACIENTES CON ENFERMEDAD INFLAMATORIA INTESTINAL

    Directory of Open Access Journals (Sweden)

    JAIME LUBASCHER C., DR.

    2015-09-01

    Full Text Available El creciente aumento de pacientes con enfermedad inflamatoria intestinal (EII, sumado a la multiplicidad de alternativas terapéuticas y a la poca experiencia en general de los médicos para tratar estas patologías, ya que son enfermedades emergentes, ha facilitado que se cometan errores tanto en el diagnóstico como en el tratamiento de las EII. En este artículo, se presentarán los más frecuentes e importantes, según la experiencia del autor, con el objeto de corregir estas conductas y alertar a los equipos médicos sobre éstas. El listado incluye errores cometidos en la historia clínica, laboratorio general, endoscopia y tratamiento.

  10. Dental problems and irradiation of the O.R.L. sphere: a new attitude. Preliminary results on 488 cases

    International Nuclear Information System (INIS)

    Paget, C.R.

    1975-01-01

    High-energy radiotherapy has greatly improved the percentage of cures in cancers of the ORL sphere, but it is debatable whether the same progress has been made in the prevention of its sequels and complications. Post-radiotherapeutic dental decay, the result of asialia, is almost inevitable when the saliva glands are irradiated at doses above 3000 rads. These post-radiotherapeutic caries with their train of local infections, pains, and in some very serious but fortunately rare cases evolution towards osteonecrosis of the lower jaw, more often affected than the upper, can cancel out all the benefits derived from a cervico-facial radiotherapy from which a local sterilisation has been obtained. Post-radiotherapeutic tooth decay and its evolution towards osteoradionecrosis are described. A combined effort has been made by a team of ORL specialists, radiotherapists and dentists in an attempt to work out a dental policy aimed at reducing these complications to a minimum [fr

  11. Předstihový výzkum hradu Orlíka u Humpolce v roce 2006

    Czech Academy of Sciences Publication Activity Database

    Dragoun, B.; Durdík, Tomáš

    2007-01-01

    Roč. 68, - (2007), s. 56-57 ISSN 1211-992X. [Archeologické výzkumy v Čechách 2006. Praha, 11.04.2007-12.04.2007] R&D Projects: GA MK DB06P01OPP004 Institutional research plan: CEZ:AV0Z80020508 Keywords : castle * castellology * architecture * medieval archeology * Orlík u Humpolce * Middle Ages * Bohemia Subject RIV: AC - Archeology, Anthropology, Ethnology

  12. Bone scintigraphy in the diagnosis of bone invasions of face and skull epitheliomas and ORL neoplasms

    International Nuclear Information System (INIS)

    Hocquard, Claude.

    1975-01-01

    Bone scintigraphy has been considerably improved by the use of technetium 99m-labelled organic phosphates: the physical characteristics are almost ideal for detection and the extemporaneous labelling of the product is convenient. This study on 75 patients has proved the value of bone scintigraphy in evaluating the bone invasion of tumoral lesions affecting the face and skull. An 88% agreement was found for scintigraphy, radiography giving 81%. The technique allows a fast assessment of whole-body bone invasion from one examination, with no extra injection of radioactive product, and it is therefore possible to orient the radiological enquiry without having to X-ray the whole skeleton, which reduces the amount of irradiation delivered to the organism. From these observations it may be concluded that scintigraphy is a simple, harmless method, with many advantages, but its limits must be known and it must always be interpreted as a function of other clinical and radiological data. It should be systematic in research on the local spreading of face and skull epitheliomas, in neoplasms of the ORL sphere and in the search for bone metastases [fr

  13. Biochemical studies of the macromolecular matrix of long bones in the Op/Orl mutant rat strain

    Energy Technology Data Exchange (ETDEWEB)

    Moczar, E; Berenholc, S; Phan-Dinh-Tuy, B; Robert, A M

    1978-01-01

    The long bones of normal and Op/Orl mutant rats were incubated with /sup 14/C-glucose and fractionated by EDTA and urea extraction. The analytical results of the various extracts suggested an increase in structural glycoprotein content and a decrease in collagen solubility in the long bones of mutants. Significant differences were found in the organic matrix composition of male and female bones of the two strains. /sup 14/C-glucose incorporation was stronger in males than in females. The presence of a glycosaminoglycan different from the chondroitinesulfate was shown in males. Basic amino acid content (lysine, arginine, histidine) was clearly higher in the insoluble residue of male bones .

  14. Biochemical studies of the macromolecular matrix of long bones in the Op/Orl mutant rat strain

    International Nuclear Information System (INIS)

    Moczar, E.; Berenholc, S.; Phan-Dinh-Tuy, B.; Robert, A.M.

    1978-01-01

    The long bones of normal and Op/Orl mutant rats were incubated with 14 C-glucose and fractionated by EDTA and urea extraction. The analytical results of the various extracts suggested an increase in structural glycoprotein content and a decrease in collagen solubility in the long bones of mutants. Significant differences were found in the organic matrix composition of male and female bones of the two strains. 14 C-glucose incorporation was stronger in males than in females. The presence of a glycosaminoglycan different from the chondroitinesulfate was shown in males. Basic amino acid content (lysine, arginine, histidine) was clearly higher in the insoluble residue of male bones

  15. La tuberculose extra-ganglionnaire primitive de la sphère ORL: à propos de 15 cas

    Science.gov (United States)

    Touati, Mohamed Mliha; Darouassi, Youssef; Chihani, Mehdi; Lakouichmi, Mohammed; Tourabi, Khalid; Ammar, Haddou; Bouaity, Brahim

    2014-01-01

    Les localisations ORL extra ganglionnaires de la tuberculose sont rares. La symptomatologie clinique ainsi que les examens paracliniques sont souvent trompeurs,posant ainsi le problème de diagnostic différentiel avec la pathologie tumorale. Nous rapportons 15 cas de localisations extra ganglionnaires de tuberculose, colligés au service ORL et CCF de l'Hopital Militaire Avicenne de Marrakech colligés entre 2009 et 2013. L’âge moyen de nos patients est de 33 ans. L’étude topographique a montré 6 cas au niveau du cavum, un cas de miliaire tuberculeuse pharyngée, 4 cas laryngés; 2 localisations auriculaires; 1 parotidienne et 1 localisation sous maxillaire. Le diagnostic était anatomopathologiquedans tous les cas. Tous nos patients ont reçu un traitement antituberculeux avec une bonne évolution. Mots-clés: Tuberculose, amygdale, rhinopharynx, larynx, glandes salivaires,Oreille moyenne. PMID:25815100

  16. Algunos aspectos del espectro Autista. Un trastorno inusitadamente frecuente y doloroso.

    Directory of Open Access Journals (Sweden)

    Daniel Jácome Roca

    2008-07-01

    Full Text Available

    El autismo (o espectro autista es un desorden neuro-conductual –hereditario y heterogéneo-
    del desarrollo del cerebro, que comienza en niños menores de tres años de edad y que deteriora
    su comunicación e interacción social causando un comportamiento restringido y repetitivo. Pueden jugar
    un papel en estos síndromes, algunas anormalidades cromosómicas. Las soluciones ni son simples ni
    uniformes en los diferentes síndromes, que algunas veces se asocian con patologías conocidas como el
    síndrome de Down, rubéola congénita, síndromes de Rett o de la X frágil, embriopatía por valproato, etc.
     
    Para hacer un diagnóstico de autismo, el DSM-IV –de la Asociación Americana de Psiquiatría- indica que es necesario encontrar las siguientes características:
    A. Un total de seis o más manifestaciones de (1, (2 y (3, con l menos dos de (1, al menos una
    de (2, y al menos una de (3.
    1. Trastorno cualitativo de la relación, expresado como mínimo en dos de las siguientes manifestaciones:
    a. Trastorno importante en muchas conductas de relación no verbal, como la mirada a los ojos, la
    expresión facial, las posturas corporales y los gestos para regular la interacción social.
    b. Incapacidad para desarrollar relaciones con iguales adecuadas al nivel de desarrollo.
    c. Ausencia de conductas espontáneas encaminadas a compartir placeres

  17. Anquilosis mandibular: una frecuente secuela por Noma Mandibular ankylosis: a Noma frequent sequel

    Directory of Open Access Journals (Sweden)

    R. Fernández García-Guilarte

    2009-12-01

    Full Text Available Conocemos poco sobre el Noma o Enfermedad Cancrum Oris. Esta entidad afecta a niños con malnutrición crónica, poca higiene oral, poco desarrollo sanitario y enfermedades concurrentes debilitantes. Existe un consenso general sobre que el Noma empieza como una gingivitis; en su fase aguda, puede haber respuesta al tratamiento antibiótico, no obstante, las secuelas tras su curación incluyen daños estéticos y funcionales variables, que pueden requerir cirugía reconstructiva. Presentamos 3 casos de anquilosis mandibular que en el examen preoperatorio presentaron dimorfismo mandibular, fusión de hueso maxilar y mandibular y anquilosis de la articulación témporomandibular. La ortopantografía y la Tomografía Axial Computerizada (TAC fueron muy útiles en la planificación de la cirugía. El tratamiento quirúrgico consistió en todos los casos en la resección del hueso anquilótico y la reconstrucción con injerto condrocostal en uno de los casos. En el postoperatorio se siguió fisioterapia intensiva. Clínicamente todos los pacientes mostraron una gran mejoría en la masticación, la alimentación y el habla, obviamente debido a una buena oclusión. El problema más común fue la baja colaboración en la rehabilitación mandibular por parte de los pacientes.Little is known about Noma or Cancrum Oris Disease. This entity affects to children with chronic malnutrition, poor oral hygiene, poor environmental sanitation and debilitating concurrent illness. There is general consensus that noma starts as gingivitis. The acute stage responds readily to antibiotic treatment. The sequelae after healing include variable functional and aesthetic impairments, which require reconstructive surgery. We report 3 cases of mandibular ankylosis. Preoperative examination revealed mandibular dismorphism, fusion of maxilla and mandible and ankylosis of the temporomandibular joint. Orthopantography and Computed Thomography scan (TCS were very useful in planning

  18. Combination of radiotherapy and cetuximab for patients suffering from of an advanced and non operable epidermoid carcinoma of the ORL sphere: results and side effects

    International Nuclear Information System (INIS)

    Acevedo, C.; Valette, G.; Bouchekoua, M.; Marianowski, R.; Pradier, O.

    2010-01-01

    The authors report a retrospective survey of a set of locally advanced epidermoid carcinomas treated by irradiation and cetuximab. They assessed the response to the treatment, the specific survival, and the global survival as well as the tolerance. The survey is based on 31 men and 5 women suffering from different stage 4 non-metastatic advanced epidermoid carcinomas of the ORL sphere. Short communication

  19. Receptor binding properties and antinociceptive effects of chimeric peptides consisting of a micro-opioid receptor agonist and an ORL1 receptor antagonist.

    Science.gov (United States)

    Kawano, Susumu; Ito, Risa; Nishiyama, Miharu; Kubo, Mai; Matsushima, Tomoko; Minamisawa, Motoko; Ambo, Akihiro; Sasaki, Yusuke

    2007-07-01

    Receptor binding properties and antinociceptive activities of chimeric peptides linked by spacers were investigated. The peptides consisted of the micro-opioid receptor ligand dermorphin (Tyr-D-Ala-Phe-Gly-Tyr-Pro-Ser-NH(2)) or its analog YRFB (Tyr-D-Arg-Phe-betaAla-NH(2)) linked to the ORL1 receptor ligand Ac-Arg-Tyr-Tyr-Arg-Ile-Lys-NH(2) (Ac-RYYRIK-NH(2)). All chimeric peptides were found to possess high receptor binding affinities for both micro-opioid and ORL1 receptors in mouse brain membranes although their binding affinities for both receptors in spinal membranes were significantly lower. Among them, chimeric peptide 2, which consists of dermorphin and Ac-RYYRIK-NH(2) connected by a long spacer, had the highest binding affinity towards both receptors. In the tail-flick test following intrathecal (i.t.) administration to mice, all chimeric peptides showed potent and dose-dependent antinociceptive activities with an ED(50) of 1.34-4.51 (pmol/mouse), nearly comparable to dermorphin alone (ED(50); 1.08 pmol/mouse). In contrast to their micro-opioid receptor binding profiles, intracerebroventricular (i.c.v.) administration of the chimeric peptides resulted in much less potent antinociceptive activity (ED(50) 5.55-100peptides, and the regulation of mu-opioid receptor-mediated antinociception in brain. The present chimeric peptides may be useful as pharmacological tools for studies on micro-opioid receptor/ORL1 receptor heterodimers.

  20. Sedimentology, stratigraphy and chronology of a decantation tank in the sewer network of Orléans (France).

    Science.gov (United States)

    Jacob, Jérémy; Thibault, Alexandre; Simonneau, Anaëlle; Le Milbeau, Claude; DiGiovanni, Christian; Sabatier, Pierre; Reyss, Jean-Louis; Ardito, Luigi; Morio, Cédric

    2017-04-01

    Current debates on the status of the Anthropocene convey geologists and palaeoenvironmentalists toward new spatial and temporal targets. One of the most emblematic socio-ecosystem of the Anthropocene is urban areas in which the dynamics of materials are mainly controlled by human activities. This brings unprecedented elemental, molecular and isotopic concentrations and distributions that lead Norra (2009) to propose a new geological sphere: the Astysphere. Here we propose that sediments accumulated in sewer networks can provide original, integrated, and multi-thematic archives for the recent history of cities by considering urban systems as any catchment where materials are produced, transported and sedimented. The study site is a decantation tank that collects stormwater and wastewater from the north of Orléans city, upstream wastewater plants in Orléans. Sediments accumulated since 1942 over 17 m depth and were never cleaned out until 2015. Two sedimentary cores of 70 (A) and 250 cm long (B) were collected before clean out and then a third of 150 cm (C) after. Sediments are organized into layers constituted by sands and gravels alternating with silts and organic layers. Sharp contacts between those layers indicate evenemential sedimentation, as expected in sewer networks. We formulate the hypothesis that organic/mineral alternations result from a seasonal dynamic. 7Be presence in topmost sample from core A confirms it was deposited within the last 6 months. In core C, only the upper half core, mostly mineral, displays significant 7Be levels whereas 7Be is absent from the lower half, which is mostly organic. This would confirm that our hypothesis of a seasonal alternation, with organic facies deposited during spring- summer and mineral facies deposited during fall-winter. 30 14C dates measured on cores A and B by postbomb method are logically distributed with depth, the most ancient (beginning of the eighties) being recorder at 2.5m depth. This study shows that

  1. Crisis vaso-oclusivas, una complicación frecuente de la drepanocitosis Vaso-occlusive crisis, a frequent complication of drepanocytosis

    OpenAIRE

    S. González Muñiz; E. Larrea Tamayo; J. Mayordomo Colunga; M. González Sánchez; A. Sariego Jamardo

    2010-01-01

    Introducción: Existen diferentes formas clínicas de drepanocitosis, siendo la homocigosis la más grave. Es especialmente frecuente en la raza negra. Los actuales movimientos migratorios hacen que su manejo sea cada vez más frecuente en nuestro ámbito.  Presentamos dos casos de crisis vasooclusivas en niños afectos de drepanocitosis homocigota.
    Caso clínico 1: Paciente con drepanocitosis homocigota, que acude por cuadro febril, asociando dolor lumbar y en ambas rodillas, que no res...

  2. Supernumerarios : Anomalías dentarias de número más frecuentes en la clínica odontopediátrica

    OpenAIRE

    Hernández, Sandra Fabiana; Iriquin, Stella Maris; Ruiz, Miriam Ester; Rom, Mónica Graciela

    2017-01-01

    Los dientes supernumerarios o hiperodoncia se han definido como dientes que exceden de la fórmula dental normal, independientemente de su forma y localización. Esta anomalía parece tener componente hereditario que pueden estar o no asociadas a algún síndrome. La presencia de dientes supernumerarios puede ser doble, múltiple y única, siendo ésta la más frecuente. La prevalencia es mayor en la dentición permanente y su presencia es más frecuente en el sexo masculino. Los dientes supernumerarios...

  3. Combination of radiotherapy and cetuximab for patients suffering from of an advanced and non operable epidermoid carcinoma of the ORL sphere: results and side effects; Association de radiotherapie et de cetuximab chez des patients atteints d'un carcinome epidermoide de la sphere ORL evolue non operable: resultats et effets secondaires

    Energy Technology Data Exchange (ETDEWEB)

    Acevedo, C.; Valette, G.; Bouchekoua, M.; Marianowski, R.; Pradier, O. [CHU Morvan, 29 - Brest (France)

    2010-10-15

    The authors report a retrospective survey of a set of locally advanced epidermoid carcinomas treated by irradiation and cetuximab. They assessed the response to the treatment, the specific survival, and the global survival as well as the tolerance. The survey is based on 31 men and 5 women suffering from different stage 4 non-metastatic advanced epidermoid carcinomas of the ORL sphere. Short communication

  4. Teatro al aire libre

    Directory of Open Access Journals (Sweden)

    Philippe Canac

    2016-11-01

    Full Text Available Siendo cada vez más frecuentes y numerosas las peregrinaciones a la basílica de Notre Dame, de Laus (Altos Alpes, su capacidad resultaba hace tiempo insuficiente para acoger a sus peregrinos. Este fue el motivo de crear, en un terreno situado ante el atrio de la basílica, un conjunto, que permitiese celebrar misas al aire libre, ceremonias litúrgicas o representaciones de teatro religioso y que dispusiese de todas las posibilidades para conseguir la libertad del juego escénico.

  5. Programa Padres al Colegio

    OpenAIRE

    Viñeglas Fernández, Sandra

    2014-01-01

    El presente trabajo, es un proyecto orientado a la promoción de la salud, en referencia al virus del papiloma humano (VPH), ya que este virus es el causante de una de las infecciones de transmisión sexual más frecuentes en el mundo, el objetivo de este trabajo, es diseñar una serie de intervenciones que contribuyan a sensibilizar e informar a la ciudadanía, para lograr mejorar la prevención del virus del papiloma humano y el cáncer de cérvix. Como ya es sabido, cualquier intervención sobre...

  6. Las manifestaciones del desarrollo desigual más frecuentes en los niños/as de la edad preescolar y su tratamiento psicopedagógico

    Directory of Open Access Journals (Sweden)

    Yedania Borot Nuñez

    2017-11-01

    Full Text Available El presente trabajo aborda los aspectos teóricos fundamentales en relación con la comprensión de las manifestaciones del desarrollo desigual más frecuentes en la edad preescolar para su tratamiento psicopedagógico, aprovechando los diferentes contextos en cada momento y situaciones de la vida de los niños/as

  7. Porfirias poco frecuentes: Casos detectados en la población argentina Non frequent porphyrias in the argentinean population

    Directory of Open Access Journals (Sweden)

    V A Melito

    2006-12-01

    Full Text Available Las porfirias son consecuencia de fallas en el metabolismo del hemo. Se clasifican según el tipo de sintomatología clínica prevalente o el órgano donde se expresa preferencialmente la falla metabólica. En general la deficiencia enzimática está asociada a mutaciones en los genes que codifican para cada una de las enzimas. Están descritos 7 tipos de porfiria diferentes. Se transmiten por carácter autosómico dominante a excepción de la PCE, la PHE y la NPA que son recesivas. Sin embargo, están reportadas variantes homocigotas para el resto de las porfirias de pronóstico y evolución mucho más grave que la forma heterocigota. La descripción de estos casos poco frecuentes, sus tratamientos y evolución, facilitarían tanto el diagnóstico diferencial de la porfiria como el conocimiento de las posibilidades terapéuticas en cada caso. Asimismo para las porfirias heterocigotas con manifestación infantil, su identificación temprana y tratamiento aseguraría una mejor evolución minimizando los riesgos asociados. Se han diagnosticado 5 casos de porfirias agudas en niñas: 2 de PAI, 2 de PV y 1 de CPH. Entre las porfirias cutáneas se presentan 25 casos de PCT infantil, el primer caso de PHE en Argentina, 4 casos de PCE infantil y 1 en un adulto y 2 casos de PPE con compromiso hepatobiliar.The Porphyrias are a group of diseases resulting from partial deficiencies in one of the heme biosynthetic enzymes. These disorders can be classified on the basis of their clinical manifestations or according the organ where the metabolic deficiency is mainly expressed. In general this enzyme deficiency is associated with mutations in the genes which codify each enzyme. There are 7 types of Porphyrias. They are autosomal dominant disorders with the exception of PCE, PHE and NPA which are recessive. However, some rare and severe cases with recessive inheritance have also been reported. The description of these infrequent cases and their treatments and

  8. La nefropatía IgA, la glomerulopatía más frecuente en el mundo

    Directory of Open Access Journals (Sweden)

    Sandalio Durán Álvarez

    Full Text Available La nefropatía inmunoglobulina A es una glomerulonefritis mediada por inmunocomplejos caracterizada por el depósito de inmunoglobulina A1 en el mesangio glomerular. Es la forma más frecuente de glomerulonefritis primaria en el mundo. La probabilidad de deterioro de la función renal a largo plazo, está aumentada por los hallazgos siguientes: hipertensión arterial, hematuria microscópica persistente, proteinuria mayor de 0,5 g/día, descenso de la función renal al comenzar las manifestaciones o hallazgos en la biopsia renal de esclerosis glomerular, esclerosis vascular, fibrosis intersticial, atrofia tubular, formación de crecientes o distribución de IgA en la pared de los capilares glomerulares en la inmunofluorescencia. Son manifestaciones clínicas en la nefropatía inmunoglobulina A la hematuria macroscópica en aproximadamente la mitad de los pacientes al primero o segundo día del inicio de síntomas de infección respiratoria, y está asociada con dolor en el flanco en pacientes menores de 40 años. En los más viejos, la hematuria microscópica es generalmente asintomática, y en ocasiones, detectada en análisis de orina de pesquisa. Entre 10 y 20 % de los pacientes, por lo general aquellos que tienen hematuria y proteinuria ligera, pueden lograr remisión espontánea; pero, entre 25 y 30 % pueden mostrar progresión hacia la enfermedad renal crónica terminal, y la progresión por lo general es lenta (5-20 años. La biopsia renal es la única prueba específica para confirmar el diagnóstico. Los pacientes con hematuria y proteinuria menor de 0,3 g/día que están normotensos, no requieren tratamiento específico con medicamentos, pero necesitan ser controlados periódicamente con análisis de orina, creatinina sérica y medida de la tensión arterial. Los pacientes con proteinuria o hipertensión deben ser tratados enérgicamente con inhibidores de la enzima convertidora. La hipertensión, la proteinuria significativa (> 0,5 g

  9. Bohemian Book Painting in the Early Modern Period in a New Context. An Illuminated Printed Book from the Property of the Bohemian Brethren Priest Vavřinec Orlík

    Czech Academy of Sciences Publication Activity Database

    Just, Jiří; Šárovcová, M.

    2016-01-01

    Roč. 64, č. 6 (2016), s. 462-479 ISSN 0049-5123 Institutional support: RVO:67985963 Keywords : The Bohemian Brethren * Vavřinec Orlík * Book Painting * Old Prints Subject RIV: AB - History OBOR OECD: History (history of science and technology to be 6.3, history of specific sciences to be under the respective headings)

  10. Lesiones musculo-esqueléticas más frecuentes en miembro superior, en los trabajadores de locales de comida rápida

    OpenAIRE

    Dasilva, Luciana; Gallo, Pablo

    2015-01-01

    La presente investigación se centra en el estudio de las lesiones laborales más usuales, a nivel de los miembros superiores, entre los empleados de los locales de comida rápida. Se buscó detallar la prevalencia de enfermedades laborales dentro del sector de la cocina, se inquirió sobre las causas de dichas lesiones y se estudió las condiciones de trabajo. UObjetivo general:U Identificar las lesiones músculo-esqueléticas más frecuente que sufren en los miembros superiores los...

  11. Opciones vacunales contra los virus patógenos de porcinos PRRS y PCV2, un binomio frecuente

    Directory of Open Access Journals (Sweden)

    Marcos Cajero-Juárez

    2017-01-01

    Full Text Available En la última década, el síndrome reproductivo y respiratorio porcino (PRRS, por sus siglas en inglés y las enfermedades asociadas al circovirus porcino tipo 2 (PCV2, por sus siglas en inglés, representan una gran preocupación para la industria porcícola, debido a la afectación de los índices productivos. En consecuencia, su presencia va acompañada de cuantiosas pérdidas económicas. Actualmente, en la mayoría de los centros de producción, se utilizan vacunas clásicas, es decir, elaboradas a partir del virus completo viable ó atenuado. En relación al PCV2, se dispone de pocas vacunas de nueva generación, referidas como aquellas obtenidas a través de la tecnología del ADN recombinante, mientras que, únicamente vacunas clásicas están disponibles contra el virus PRRSV. En este manuscrito, revisamos la naturaleza de los virus PRRSV y PCV2, así también, resaltamos la importancia económica, de acuerdo a los datos de prevalencia nacional e internacional. Además, se incluyen datos de nuevas opciones vacunales, en relación con las vacunas comerciales que, en algunos casos, se ha documentado una baja protección contra cepas heterólogas y cepas de reciente aparición. Por un lado, la investigación en vacunas de nueva generación, ha tenido buena aceptación, debido a la posibilidad de seleccionar la información genética del virus para estimular la respuesta inmune protectora del hospedero y, por otro, porque se acelera el desarrollo de vacunas, e incluso, es posible evitar las infecciones de las cuales es responsable el virus vacunal.

  12. Ondas J de Osborn en hipotermia: Presentación de un caso poco frecuente en el trópico Osborn waves in hypothermia: One rare case in the tropic

    Directory of Open Access Journals (Sweden)

    Eduardo Ramírez

    2009-08-01

    Full Text Available En 1953, el Doctor John Osborn describió la onda J en el electrocardiograma. La hipotermia (temperatura corporal menor a 35 grados centígrados inicialmente se asocia a taquicardia sinusal, pero con temperaturas menores a 32,2 grados centígrados se inicia la bradicardia sinusal, asociada a prolongación progresiva del intervalo PR, el complejo QRS y el intervalo QTc. De otra parte, a temperaturas por debajo de 30 grados centígrados, 80% de los pacientes presenta ondas J o de Osborn, que consisten en una deflexión extra, al final del QRS, la cual se observa mejor en las derivaciones inferiores y laterales. Empeora a medida que la temperatura desciende y mejora en el momento en que al paciente se le incrementa su temperatura corporal. Este fenómeno no es raro en países con estaciones, pero en el trópico no es un hallazgo frecuente.Dr. John Osborn described J wave in the electrocardiogram 1953. Hypothermia (body temperature < 35°C is initially associated with sinus tachycardia, but with temperatures < 32.2°C, sinus bradycardia associated to progressive prolongation of PR interval, QRS complex and QTc interval, appears. Otherwise, at temperatures below 30°C, 80% patients present J or Osborn waves consisting of an extra deflection at the end of QRS, best depicted in inferior and lateral leads. They become more prominent as the temperature drops and gradually disappear with re-warming. This phenomenon is not rare in countries with 4 seasons but is not common in the tropics.

  13. laryngectomie totale résultats de l'expérience du service d'orl de sfax

    African Journals Online (AJOL)

    fistula: incidence, predisposing factors and therapy. Head and Neck Surg. 2005;. 133: 689-694. 5- Gates GA, Hearne EM. Predicting oesopharyngeal speech. Ann. Otol. Rhinol. Laryngol. 1982; 91: 454-457. 6- Leonhardt FD, Tangerina R, Okada DM et al. Peristomal recurrence after total laryngectomy. Head and Neck Surg.

  14. Afecciones bucales más frecuentes en preescolares de Consolación del Sur Most frequent oral affections in pre-school children in Consolacion del Sur

    Directory of Open Access Journals (Sweden)

    María del Carmen Rosete Mazón

    2011-12-01

    Full Text Available Se realizó un estudio descriptivo, transversal en niños preescolares de 2-5 años, pertenecientes al área de salud del policlínico "5 de Septiembre", municipio Consolación del Sur, Pinar del Río, en el período comprendido entre 2006-2007, con el objetivo de determinar las afecciones bucales más frecuentes. El universo estuvo formado por 453 niños y la muestra por 412 niños según los criterios de inclusión y exclusión. Los preescolares incluidos en el estudio oscilaron entre 2 y 5 años de edad. Se confeccionó un formulario para la recogida de los datos previo consentimiento informado de padres o representantes. Se examinaron los niños en el consultorio, hogar o círculo infantil, con luz natural, usando guantes, depresores linguales y regla milimetrada para medir la magnitud del resalte. Para el procesamiento y el análisis de la información se confeccionó una base de datos utilizando el sistema Microsoft Excel 2003 y el programa estadístico Estadística 5.0. Se aplicó en calidad de medida de resumen el porcentaje. La asociación entre las variables se analizó mediante el test de independencia basado en la distribución ji cuadrado. El nivel de significación estadística empleado fue de 0.05. Se identificaron como afecciones bucales más frecuentes en la mayoría de los niños estudiados la caries dental, maloclusiones y traumatismos dentarios.A descriptive, cross- sectional study with pre-school children from 2 to five years old belonging to "5 de septiembre" clinic in Consolacion del Sur was conducted from 2006 to 2007 with the objective of determining most frequent oral affections. The target group was comprised of 453 children and the sample of 412 considering inclusion and exclusion criteria. Ages taken were approximately 2 and 5 years old. A form to collect data was prepared taking into account a previous informed consent from parents or representatives. Children were examined in the polyclinic, home or care centers

  15. Incapacidad laboral por diabetes mellitus: características epidemiológicas y complicaciones macro y microangiopáticas más frecuentes

    Directory of Open Access Journals (Sweden)

    Raúl Jesús Regal Ramos

    2014-03-01

    Full Text Available La diabetes mellitus (DM es la enfermedad metabólica más frecuente y conlleva la disminución en la calidad de vida de los sujetos que la padecen, así como la pérdida de años de vida productiva a consecuencia de las complicaciones crónicas o de la mortalidad. Objetivo: Conocer las características epidemiológicas de los pacientes con invalidez permanente (IP debida a DM y conocer cuáles son las complicaciones más frecuentes que motivaron la IP y su relación con las distintas ocupaciones. Método: Se realizó un estudio descriptivo en el que se recogieron pacientes valorados en la Unidad Médica de la Dirección Provincial del INSS de Madrid entre los años 2005 a 2011 con el diagnóstico de diabetes. Se excluyeron aquellos expedientes que no fueron calificados como IP, aquellos que presentaban otras patologías no relacionadas con la diabetes subsidiarias de probable incapacidad (como procesos oncológicos, demencia, esclerosis múltiple,.. y los casos de diabetes secundarias. Se estudian las variables edad, sexo, estado civil, profesión, régimen de afiliación a la Seguridad Social, y las recogidas en el apartado diagnóstico del informe médico de síntesis (tipo de diabetes, complicaciones derivadas de la DM y factores de riesgo cardiovascular. Resultado: El total de pacientes estudiados fue de 896. Respecto a la población general ocupada de nuestro entorno observamos un 31% más de varones (p< 0,0005; Razón de prevalencia =1,56 y un 28% más de ocupaciones del grupo VII de la CNO-11 (industria y construcción (p < 0,005; Razón de prevalencia =2,3. El 48% de las profesiones científicas y el 36 % de las administrativas estaban diagnosticados de oftalmopatía. El 39% de trabajadores de industria y construcción estaban diagnosticados de algún grado de coronariopatía. Conclusión: Nuestros resultados permiten objetivar que la oftalmopatía es la complicación que más se asocia a invalidez permanente en profesiones de alta

  16. Asociación del trastorno por deficit de atención con hiperactividad e impulsividad (TDAH) con accidentes graves frecuentes o unicos en el servicio de urgencias del hospital infantil de Morelia

    OpenAIRE

    García Zamora, Ivonne

    2011-01-01

    El transtorno por déficit de atención hiperactivad e impulsividad es uno de los trastornos neuroconductuales más frecuentes, empieza en la niñez temprana y puede continuar a la edad adulta, la mayoría de los casos de TDAH se diagnostican en los primeros años escolares llámese preescolar o primaria.

  17. Fístula carótido-cavernosa asociada al parto

    Directory of Open Access Journals (Sweden)

    David Magaña-García

    2016-07-01

    Conclusión: Este caso nos parece interesante al tratarse de una fístula carótido-cavernosa de alto flujo asociada al parto. Esto no representa la etiología más frecuente, ni el cuadro clínico que se esperaría encontrar en una presentación espontánea debida a este suceso.

  18. [ORL manifestations in malignant hemopathies].

    Science.gov (United States)

    Koffi-Aka, V; Akon, J C; Koné, M; Yotio, A; Ehouo, F

    1999-01-01

    The purpose of this study was to collect ENT signs observed during lymphomas. The study was conducted in the unit of ENT at the CHU of Treichville, during 15 month from december 1995 to march 1997. Ten cas of lymphomas was enrolled with 6 Hodgkin's lymphomas, 3 acute leukemia and 1 Hodgkin's lymphoma. The diagnosis was based on biopsy and myelogram. There is a wide spectrum and non specific clinical pictures. Pharynx is the common site particularly on the Waldeyer's ring. The disease is common among young people, low socio-economical status. Female are predominant. Most patients died before specific treatment because of the late diagnosis.

  19. Entrenamiento y fisiología del ejercicio en la pubertad : Análisis de las creencias actuales mas frecuentes

    OpenAIRE

    Mirco, Gustavo Ariel

    2013-01-01

    El presente trabajo forma parte de la especialización en fisiología del ejercicio de la Universidad Nacional de La Plata, Argentina. En este estudio se pudo comprobar la existencia de diversas creencias en cuanto a las prácticas de entrenamientos físico-deportivos en edades puberales. En primer lugar se seleccionaron algunas de las creencias consideradas mas relevantes en cuanto al impacto que pudieran ocasionar en los jóvenes practicantes. Posteriormente se confecciono un instrumento de reco...

  20. Patologías pulpares y periapicales más frecuentes en urgencias en 2 clínicas estomatológicas

    OpenAIRE

    Dinhora Quiñones Márquez

    2000-01-01

    Las patologías pulpares y periapicales son unas de las enfermedades que más llevan a los pacientes a acudir a una consulta de urgencia estomatológica debido a su sintomatología. Es de gran importancia realizar un correcto diagnóstico en este momento para brindar la terapeútica adecuada.La frecuencia de estas patologías en consulta de urgencia fue lo que nos motivó a la realización de este trabajo, el cual tuvo entre sus objetivo contribuir al conocimiento de las patologías pulpares y periapic...

  1. Miocardiopatía hipertrófica y cardiopatía isquémica. Una asociación frecuente

    OpenAIRE

    ESTIGARRIBIA PASSARO, JORGE

    2010-01-01

    RESUMEN Se presenta el caso de una paciente de 74 años portadora de una miocardiopatía hipertrófica con comportamiento obstructivo en la cual los estudios funcionales y la cinecoronariografía llevaron al diagnóstico de cardiopatía isquémica asociada. Se repasan las principales pautas diagnósticas de la miocardiopatía hipertrófica en sus aspectos clínicos y ecocardiográficos, su signología diferencial con la estenosis aórtica valvular y su manejo farmacológico básico, así como la indicación de...

  2. Una causa poco frecuente de hipertrabeculación exclusiva del ventrículo derecho: ventrículo derecho no compacto

    Directory of Open Access Journals (Sweden)

    Juan C. Díaz, MD

    2013-07-01

    Full Text Available La cardiopatía por falta de compactación ventricular es una entidad infrecuente, que generalmente compromete el ventrículo izquierdo ocasionando falla cardíaca, arritmias ventriculares, embolismo periférico y muerte súbita. Hasta el momento, se han descrito muy pocos casos de ventrículo derecho no compacto, por lo cual no hay criterios diagnósticos establecidos y se desconoce como es la evolución clínica y la respuesta al tratamiento de este grupo de pacientes. Se describe el caso de un paciente con hipertrabeculación marcada del ventrículo derecho en quien se descartó un origen estructural de la misma, haciéndose diagnóstico de ventrículo derecho no compacto.

  3. Una causa poco frecuente de hipertrabeculación exclusiva del ventrículo derecho: ventrículo derecho no compacto

    Directory of Open Access Journals (Sweden)

    Juan C Díaz

    2013-08-01

    Full Text Available La cardiopatía por falta de compactación ventricular es una entidad infrecuente, que generalmente compromete el ventrículo izquierdo ocasionando falla cardíaca, arritmias ventriculares, embolismo periférico y muerte súbita. Hasta el momento, se han descrito muy pocos casos de ventrículo derecho no compacto, por lo cual no hay criterios diagnósticos establecidos y se desconoce como es la evolución clínica y la respuesta al tratamiento de este grupo de pacientes. Se describe el caso de un paciente con hipertrabeculación marcada del ventrículo derecho en quien se descartó un origen estructural de la misma, haciéndose diagnóstico de ventrículo derecho no compacto.

  4. Íleo biliar:: complicación poco frecuente de la litiasis vesicular Biliary ileum:: an uncommon complication of vesicular lithiasis

    Directory of Open Access Journals (Sweden)

    Gabriel González Sosa

    2010-06-01

    Full Text Available Se presenta el caso de una paciente de 80 años de edad, con antecedentes de diabetes mellitus de tipo II, cardiopatía isquémica y obesidad exógena, que ingresó de urgencia, por presentar un cuadro de dolor abdominal, varios vómitos y distensión abdominal de 3 días de evolución. De forma secundaria presentó una deshidratación moderada. En la radiografía simple de abdomen se constataron signos radiológicos de oclusión intestinal, que corroboraron una ecografía abdominal y una tomografía axial computadorizada de abdomen. Se corrigió el desequilibrio hidroelectrolítico y se realizó una laparotomía exploradora, en la que se encontró un cálculo grande enclavado en el íleon terminal. Se realizó una enterolitotomía con enterorrafia y resolvió el cuadro oclusivo. A los 16 días del alta, la paciente reingresa con un cuadro similar y al reintervenirla se constató la presencia de otro cálculo y de una fístula colecistogástrica, que involucraba la vesícula biliar y el antro gástrico. Se reparó mediante colecistectomía y gastrorrafia. Al final del transoperatorio la paciente presentó un episodio de fibrilación ventricular, con bradicardia extrema, y finalmente un paro en asistolia. Fue reanimada, pero la situación no se revirtió y la paciente falleció.This the case of a female patient aged 80 with a history of type 2 diabetes mellitus, ischemic heart failure and a exogenous obesity urgently admitted due to abdominal pain, vomiting and abdominal distention of 3 days course. In abdominal simple radiograph radiological signs of intestinal occlusion were confirmed corroborated by abdominal echography and CAT. Hydroelectrolytic imbalance was corrected performing an exploration laparotomy observing the presence of large calculus located in terminal ileum. An enterolithotomy with enterorrhaphy and occlusive picture was resolved. At 16 from discharge, patient is re-admitted with a similar situation and at re

  5. ALS Association

    Science.gov (United States)

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

  6. Familial ALS

    Science.gov (United States)

    Boylan, Kevin

    2015-01-01

    Synopsis Genes linked to ALS susceptibility are being identified at an increasing rate owing to advances in molecular genetic technology. Genetic mechanisms in ALS pathogenesis appear to exert major effects in ~10% of patients, but genetic factors at some level may be important components of disease risk in most ALS patients. Identification of gene variants associated with ALS has informed concepts of the pathogenesis of ALS, aided the identification of therapeutic targets, facilitated research to develop new ALS biomarkers, and supported the establishment of clinical diagnostic tests for ALS-linked genes. Translation of this knowledge to ALS therapy development is ongoing. PMID:26515623

  7. La frecuente colisión entre el derecho a la libertad religiosa y los intereses empresariales en una sociedad multicultural

    Directory of Open Access Journals (Sweden)

    Durán-Bernadino, Manuela

    2017-10-01

    Full Text Available La utilización del velo islámico en el ámbito laboral sigue siendo objeto de debate en Europa. Lo novedoso es que el Tribunal de Justicia de la Unión Europea ha respaldado recientemente la posibilidad de que las empresas prohíban el uso del pañuelo islámico en horario laboral, al estimar, que dicha prohibición «no constituye una discriminación directa por motivos de religión o convicciones». Ante este hecho, el objetivo del presente trabajo es abordar la problemática del uso de símbolos religiosos o políticos en el ámbito laboral, en el marco de una sociedad cada vez más heterogénea y plural. Para lo cual, se realizará, en primer lugar, el estudio de la normativa marco existente a nivel europeo sobre la protección del derecho de toda persona a la igualdad ante la ley y a estar protegida contra la discriminación. En segundo lugar, el análisis de la jurisprudencia del Tribunal de Justicia de la Unión Europea, prestando especial atención a las Sentencias de 14 de marzo de 2017, con las que el Tribunal Europeo avala a las empresas a prohibir el uso visible de cualquier signo político, filosófico o religioso. Por último, se abordará la trascendencia de las bases fijadas por la doctrina científica y jurisprudencial ante el reto de resolver los conflictos internos originados entre el derecho a la libertad religiosa de los trabajadores y los intereses empresariales en el marco de las relaciones laborales. Este estudio cuenta con la revisión necesaria del derecho positivo europeo y con el seguimiento de las opiniones que al efecto se hayan vertido desde la perspectiva doctrinal. The use of the Islamic veil in the workplace continues to be the subject of debate in Europe. What is new is that the Court of Justice of the European Union has recently endorsed the possibility of companies banning the use of the Islamic handkerchief during working hours, when it considers that such a ban "does not constitute direct discrimination

  8. CAUSAS FRECUENTES DE CONDICIONES CRÍTICAS DE SALUD MADRE-HIJO, EN LOS HOSPITALES UNIVERSITARIOS DE LA SAMARITANA Y DEL VALLE ENTRE FEBREROY JUNIO DE 2005

    Directory of Open Access Journals (Sweden)

    Carmen Lilia Rodríguez Medina

    2008-04-01

    Full Text Available Antecedentes. Existen factores macro ambientales, matro ambientales y micro ambientales que llevan a condiciones críticas de salud madre-hijo. Objetivo. Describir los principales factores que caracterizaron las condiciones críticas de salud madre- hijo en los Hospitales Universitarios de la Samaritana y del Valle durante los meses de febrero a junio del 2005. Material y métodos. Se realizó un estudio descriptivo prospectivo utilizando los datos de las historias clínicas y una encuesta aplicada a las 110 madres de los recién nacidos que se encontraron en las unidades de cuidado intensivo neonatal. Se evaluaron las variables: edad gestacional, género, peso, patología del recién nacido, edad de la madre, controles prenatales, ingreso mensual, patología y hospitalizaciones previas de la madre, consumo de sustancias psico-activas, estado civil, procedencia. Se analizaron las frecuencias y se realizó un análisis multivariado mediante el paquete estadístico SPAD el análisis de regresión se hizo con el paquete MINITAB versión 14.0. Resultados. La mayoría de los recién nacidos correspondieron al género masculino, con un peso promedio de 2.411 gramos, con un promedio de edad gestacional de 33.14 semanas (26-43. La patología de mayor incidencia fue la membrana hialina seguida de la sepsis. En las madres se encontró que el rango de edad estuvo entre 12 y 46 años, el mayor porcentaje se encontró en madres entre 15 y 19 años. El 28 por ciento eran procedentes de zona rural, tres por ciento vivían en la calle y 24 por ciento sufrían condición de desplazamiento. El 9 por ciento consumió licor o droga antes y durante el embarazo, 21 por ciento de estas madres son cabeza de familia, 26 por ciento son madres solteras. El promedio de controles prenatales fue de tres y solamente el 30 por ciento los consideraron buenos,18 por ciento no asistió a ningún tipo de control prenatal. El bajo nivel de control prenatal obedeció a razones socio

  9. Lesiones más frecuentes en el boxeo durante un año de entrenamiento en todas las categorías. Pinar del Río, Año 2005

    Directory of Open Access Journals (Sweden)

    José Alejandro Álvarez Gutiérrez

    2007-12-01

    Full Text Available Se realizó un estudio de carácter descriptivo, longitudinal y retrospectivo a los atletas de boxeo de todas las categorías de edades en Pinar del Río en el período comprendido de enero del 2005 a enero del 2006 con el objetivo de conocer las lesiones más frecuentes que los afectaron. Se encontró como la categoría de edad más afectada la social con 172 lesiones para el 54.2 % del total, se comprobó que las lesiones traumáticas eran superiores a las no traumáticas en la mayoría de las categorías de edades, excepto en la pioneril y la estudiantil. Dentro de las categorías estudiantil y juvenil las lesiones en la cara fueron las significativas, siendo las del aparato motor en la social, se relacionaron las principales causas en las categorías más afectadas Se arribó a conclusiones y se dieron recomendaciones.

  10. Les charpentes à entrait retroussé moisé : exemples orléanais des XVe et XVIe siècles Braced collar-beam roofs: examples from 15th and 16th century Orleans

    Directory of Open Access Journals (Sweden)

    Clément Alix

    2010-03-01

    Full Text Available La ville d’Orléans possède un ensemble important et inédit de charpentes à pannes des XVe et XVIe s. présentant la particularité de posséder un entrait retroussé moisé. Attesté dès le premier quart du XVe siècle, ce procédé innovant, constitué de deux pièces jumelées venant enserrer les principaux éléments de la ferme, va largement se diffuser dans les édifices religieux mais surtout dans l’habitat domestique, de la maison polyvalente en pan-de-bois au riche hôtel particulier. Ce mode de construction, démontrant une parfaite maîtrise de la statique de la charpente dès sa conception en vue de renforcer la triangulation de la ferme, s’impose donc rapidement dans un contexte architectural local marqué par la rareté de l’emploi de structures à chevrons-formant-fermes. Ainsi, on le retrouve également dans les charpentes à enrayure (tourelle d’escalier, toiture en pavillon, abside. L’utilisation généralisée de la moise à Orléans, et de manière plus ponctuelle en val de Loire et dans certaines régions de France, amène aussi à s’interroger sur l’origine de ce procédé connu sous d’autres formes dans des charpentes dès les XIIe-XIIIe s.The town of Orleans possesses an important and unpublished collection of timber-framed roof structures of the 15th and 16th centuries, with a braced collar-beam. Known since the first quarter of the 15th century, this innovative process, involving two twinned pieces clasping the main elements of the frame, became widely spread in religious buildings but particularly in domestic housing, from the multipurpose timber-framed home to the elaborate town house. This method of construction, demonstrating a perfect mastery of the statics of a roof structure from its design with a view to reinforcing the triangulation of the truss, rapidly established itself in a local architectural context marked by the rare use of “chevrons-formant-fermes” (common rafters forming a

  11. Efectividad de la Distracción Tibiofemoral en la Funcionalidad Adicionada al Tratamiento Convencional en Pacientes Mayores de 50 Años con Osteoartritis de Rodilla. Un Estudio Piloto

    OpenAIRE

    Rojas-Vidal, Angelo; Valencia, Cecilia; Salazar, Luis A.

    2018-01-01

    RESUMEN: Osteoartritis (OA) es una de las enfermedades reumáticas más frecuentes y la más común enfermedad articular, afecta principalmente al cartílago articular y el hueso subcondral de una articulación sinovial resultando en la incapacidad articular. La OA es reconocida como una causa substancial de discapacidad, con significativos costos sociales y financieros debidos a las frecuentes intervenciones médicas y quirúrgicas además del ausentismo laboral. El objetivo del estudio fue determina...

  12. Ti, Al

    Indian Academy of Sciences (India)

    In the present study, authors report on the effect that substrate bias voltage has on the microstructure and mechanical properties of (Ti, Al)N hard coatings deposited with cathodic arc evaporation (CAE) technique. The coatings were deposited from a Ti0.5Al0.5 powder metallurgical target in a reactive nitrogen atmosphere at ...

  13. INTERVENCIÓN PARA REDUCIR EL TRASTORNO DE ANSIEDAD ASOCIADO AL TDA/TDAH

    OpenAIRE

    García-Fernández, Laura

    2012-01-01

    El trastorno por déficit de atención con o sin hiperactividad es abordado aquí valorando la comorbilidad asociada al mismo. Principalmente nos centramos en el trastorno de ansiedad por ser uno de los más frecuentes dentro de este grupo. Además de dar a conocer la sintomatología de ambas problemáticas y la relación que entre ellas existe, se propone un programa de intervención dirigido a la infancia, para disminuir la ansiedad asociada al TDAH. Para llegar a este punto primero se realiza un re...

  14. Asociación entre puesto de trabajo computacional y síntomas musculoesqueléticos en usuarios frecuentes Association between computational jobs and musculoskeletal symptoms in office workers

    Directory of Open Access Journals (Sweden)

    Claudio Fernando Muñoz Poblete

    2012-06-01

    Full Text Available Introducción: Está comprobado que el uso frecuente de computadores en trabajos administrativos muestra un aumento de problemas musculoesqueléticos en las personas que los utilizan. Este estudio pretende determinar asociaciones entre puestos de trabajo computacional y presencia de síntomas musculoesqueléticos, con especial énfasis en elementos físicos que componen el diseño. Materiales y Métodos: Estudio transversal realizado sobre una muestra poblacional de 153 sujetos administrativos y usuarios frecuentes de computadores. Se administró cuestionario de síntomas musculoesqueléticos y una evaluación ergonómica de los puestos de trabajo. Posteriormente, se realizó análisis univariado y multivariados. Resultados y Discusión: La proporción de puestos de trabajo con diseño ergonómico inadecuado de la superficie de trabajo fue 62,7%, teclado 53,6%, y portadocumentos 90,8%. La asociación más importante entre los síntomas por región corporal con diseño ergonómico inadecuado fue hombro izquierdo/teclado (valor p: 0,04. Se concluye que la población estudiada tiene alta prevalencia de síntomas musculoesqueléticos y que el diseño no ergonómico del teclado, escritorio y silla podrían estar relacionados con síntomas en extremidades superiores, región dorsal y lumbar, respectivamente. Se sugiere estudiar el uso dado a los puestos de trabajo por parte de los usuarios, ya que podría estar influyendo en los resultados.Introduction: This found that frequent use of computers in administrative work shows an increase of musculoskeletal problems in people who use them. This study evaluated associations between computational jobs and presence of musculoskeletal symptoms, with special emphasis on physical elements that make up the design. Materials and Methods: Cross-sectional study on a population sample of 153 subjects administrative and frequent users of computers. Questionnaire was administered musculoskeletal symptoms and ergonomic

  15. Identificación de procesos patológicos más frecuentes en fachadas y cubiertas en España a partir del método Delphi

    Directory of Open Access Journals (Sweden)

    Ortega, L.

    2015-03-01

    Full Text Available The estimated service life, as well as its components materials, is critical in order to establish realistic building maintenance programs, manageable and economically viable. The methods based on durability factors, proposed in ISO- 15686, are an efficient way of estimating the building’s service life. However, there has been limited information on quantifying the durability values, and their relationship to vulnerability or processes of deterioration which might present a constructive element. Then, this paper describes a method to characterize the most frequent damage mechanisms in the envelope of a building, since it is an element with a high risk of lesions and, accordingly, with a reduced durability. The system used to generate this information was the Delphi method that involves consultation to groups with expert-based approach to generate convergence of views. The results allow the identification and quantification of relevant durability factors that determine the occurrence of damage to an element affecting its service life.Los métodos basados en factores de durabilidad, según ISO-15686, son una forma eficiente de estimar la vida útil los elementos de un edificio. Sin embargo, se ha constatado la escasa información sobre cuantificación de dichos factores y sobre su vinculación con la vulnerabilidad o procesos de deterioro que podría presentar un elemento constructivo. En consecuencia, este artículo describe un procedimiento para caracterizar los mecanismos de daño más frecuentes en la envolvente del edificio, por ser un elemento con un elevado riesgo de presentar lesiones y ver reducida su durabilidad. Para elaborar dicha información se ha utilizado el método Delphi que implica la consulta a grupos de expertos a fin de generar convergencia de opiniones. Los resultados obtenidos permiten la identificación y cuantificación de los factores de durabilidad relevantes que condicionan la aparición de un daño de un elemento y

  16. Un nouvel habitat du Bronze final IIIb dans le Val d’Orléans et ses traces de métallurgie du fer : Bonnée, Les Terres à l’Est du Bourg (Centre, Loiret A new settlement from late Bronze IIIb in the val d’Orléans: Bonnée, Les Terres à l’Est du Bourg (lands to the east of the town (Centre, Loiret

    Directory of Open Access Journals (Sweden)

    Stéphane Joly

    2011-12-01

    Full Text Available La multiplication récente des diagnostics archéologiques autour du petit bourg actuel de Bonnée a permis la détection d’une occupation du Bronze final IIIb (circa 900-750 av. n.-e. sur environ un hectare aux Terres à l’Est du Bourg. Les limites inhérentes à ce type d’intervention réduisent l’interprétation des structures et toute approche spatiale de ce probable habitat repéré. L’étude conjointe des différents mobiliers en particulier céramique et métallurgique, mais aussi le torchis et la faune, atteste de sa culture matérielle et de son intérêt. Ces scories pourraient être parmi les plus anciennes traces en région Centre d’activité métallurgique du fer. Des activités de post-réduction sont avérées et certaines opérations de forgeage sont supposées.La découverte de cet habitat dans ce secteur du lit majeur de la Loire, apporte de nouvelles données concernant l’occupation du sol et ses problématiques évolutives dans le Val d’Orléans sur ces périodes de transition avec le Hallstatt ancien.The recent increase in the archaeological evaluations around the village of Bonnée has enabled the discovery of a final Bronze Age IIIb settlement (circa 900-750 BP on about a hectare of the Terres à l’Est du Bourg. The limits inherent in this type of work restrict the interpretation of structures and all spatial approaches to this likely dwelling. The joint study of the different furnishings, in particular ceramics and metal, but also the cob and fauna, attests to its material culture and its interest. The slag could be amongst the oldest iron metallurgy remains from the Centre region. Some activities of post-forging are proven and certain operations are guessed at. The discovery of this settlement in this sector of the major bed of the Loire, has produced new data concerning the occupation of the land and its evolutionary problems in the valley of Orleans over these periods of transition in the early

  17. Carta al Editor

    Directory of Open Access Journals (Sweden)

    Darío Maldonado Romero

    1991-03-01

    Full Text Available

    Bogotá, 01 de Agosto de 1990
    Señores
    Miembros del Consejo Editorial
    Academia Nacional de Medicina
    E.S.D.

    Señores doctores:

    Con toda consideración y respeto me permito agregar algunas anotaciones al escrito del Académico Alberto Cárdenas Escobar, aparecido en el No. 22 de Medicina, para destacar algunos aspectos de la personalidad del doctor Alberto Schweitzer galardonado con el Premio Nobel de la Paz.

    A los 30 años de edad tomó una decisión dramática: Estudiar Medicina para trabajaren el África Ecuatorial. Cuando terminó sus investigaciones sobre enfermedades tropicales y sus prácticas hospitaLarias, partió para el Gabon al pequeño pueblo de Lambarené. La tarea era desconsoladora; La atención médica había que prestarla al aire libre; iba con su esposa, como enfermera y amanuense, y no se encontraba ni un intérprete, ni un ayudante. Cuando le llegaron la medicina y el equipaje hubo que acomodarlos en un viejo gallinero abandonado; el calor era insoportable y le venían enfermos de varias millas a la redonda, a pie o en Canoas.

    Las enfermedades más difundidas eran Malaria, Disentería, estreptococias y la más mortífera, la Tripanosomiasis Gambiense, para la que empezaban a llegar medicinas nuevas eficaces y las medidas preventivas como el suministro de agua potable y enmallado de ventanas impedían muchas contaminaciones.

    Pero la que causaba mayores dificultades y trabajo era la Mycobacteriasis Anestesiante, incurable, de difícil diagnóstico, afectando a varios miembros de la misma familia, de aspecto horripilante, con complicaciones neuríticas muy dolorosas, frecuente ceguera, e invalideces y procesos erisepelatososacrotéricos, que exigían acompañante para el cambio y lavado de vendas y suministro de alimentos.

    A menos de un año de

  18. AL Amyloidosis

    Directory of Open Access Journals (Sweden)

    Desport Estelle

    2012-08-01

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

  19. Presa Orlík, en Checoslovaquia

    Directory of Open Access Journals (Sweden)

    Ogánek, Mojmír

    1959-11-01

    Full Text Available Checoslovaquia, país muy industrializado, aumenta progresivamente sus recursos de energía eléctrica desde su constitución en Estado. La producción de energía eléctrica en 1957 fue de 17.800 millones kWh, cantidad que se piensa elevar a 64.000 millones kWh en 1970. La energía hidroeléctrica se utiliza para cubrir las puntas de consumo, y representa el 13 por 100 de la producción total.

  20. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    Observation : we report a case of nasal desmoid fibromatosis occurred in a 1 year, 9 month infant. The treatment has .... Juvenile fibromatosis of the infratemporal fossa. ... the maxilla: Report of a case and review of the literature. Oral Surgery ...

  1. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    Résultats : the Middle Age of our population is 64.2 years, with a clear male prevalence. ... However, because of their poor sensitivity, they have little interest to the early phase of the ..... (tomographie par émission monophotonique de positrons.

  2. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    Introduction: Acquired tracheal stenoses represent rare but serious disease. They are often secondary to inappropriate ... RFE was performed in 6 cases and showed an obstructive syndrome in all of them. All patients received medical .... par des bougies en gomme (10 patients) ou aux broncho- scopes (1 patient). Elle nʼa ...

  3. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    Pièce de monnaie. Médiastinite. Pneumo- médiastin. Exclusion remplacement de l'œsophage. 4. 8 épilepsie. Fil d'acier enroulé. Abcés pulmonaire droit. Exclusion remplacement de l'œsophage. 5. 8. Sténose caustique. Tentative de dilatation. Pleurésie bilatérale. Drainage pleural. Exclusion remplacement de l'œsophage.

  4. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    et la mesure des composés volatils sulfurés, grâce à lʼhalimétre. Lʼhalitose était diagnostiquée dés que le niveau de ... tion chirurgicale, les allergies ou la prise de médicaments. - Les pratiques dʼhygiène bucco-dentaire .... En effet, plusieurs auteurs rapportaient que 50% de la population nord-américaine souffrait de ...

  5. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    LʼIRM trouve une lésion kystique extra axiale de lʼAPC droit de 4 cm de grand axe à contours polyé- driques irréguliers exerçant un effet de masse sur le parenchyme cérébelleux en regard et englobant en partie les structures nerveuses homolatérales. Elle est en hypo signal T1, en hyper T2 non atténué sur la séquence.

  6. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    Dans notre série, une activité ablative plus élevée est nécessaire lorsque la taille du foyer tumoral dépasse les 6 cm. (p=0,012), en cas de dépassement de la graisse péri thyroïdienne (p<10-3) ou d'envahissement ganglionnaire multi-com- partimentale (p<10-3). Un constat comparable est trouvé avec la classification ...

  7. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    gine du patient (milieu rural), sa profession (précisera s'il y a notion de contact avec les chiens) et ses antécédents médicochirurgicaux notamment une chirurgie pour un kyste hépatique ou pulmonaire. L'examen clinique notera la localisation exacte du kyste, sa taille, sa consistance, ses rapports anatomiques et recher-.

  8. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    3 : Actine musculaire lisse(+). Cet examen concluait au diagnostic de fasciite nodulaire. Une exérèse de la tumeur fut alors programmée. Elle fut menée sous anesthésie générale, par voie endobuccale avec section autour du pédicule en muqueuse saine. (Figure 4). Fig. 4 : Pièce opératoire. Les suites opératoires furent ...

  9. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    mucorales à l'amphotéricine B (3), les thromboses vascu- laires et la nécrose tissulaire constituent des contraintes qui limitent l'efficacité du traitement médical et qui justi- fient la nécessité d'un traitement chirurgical adjuvant. L'exploration chirurgicale consiste en un débridement pré- coce, répété, et complet de la totalité du ...

  10. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    mucorales (1). Les principaux germes responsables de l'infection chez l'homme sont Rhizopus, Mucor et Absidia. (1,2). Ces microorganismes sont ubiquitaires, ils sont omniprésents dans l'environnement sous formes de spores dans l'air, la terre, les végétaux en décomposition et les produits d'origine animale (3).

  11. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    sence dʼantécédents de paralysie faciale et lʼabsence de contracture permanente sur des muscles parésiés. - Les tics convulsifs sont plutôt lʼapanage de lʼenfant (syn- drome de Gilles de la Tourette), disparaissent pendant le sommeil et par le contrôle volontaire. - Les dystonies neuromusculaires sont bilatérales (spas-.

  12. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    rhumatoïde, le syndrome de Gougerot-Sjogren primitif, la sclérodermie ou le lupus, au cours des déficits immuni- taires congénitaux ou acquis, dans le sarcome de Kaposi, dans les adénopathies contiguës à des pathologies malignes notamment les lymphomes ou encore dans des pathologies infectieuses (VIH) (2,3,9).

  13. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    Les prélèvements sanguins ont été effectués dans tous les cas dans les mêmes conditions, le matin à jeun. Le dosage du ... Conclusion: The decrease of magnesium in blood concerns the globular fraction more than plasmatic. The dosage of the magnesium is an element of decorate-clinic orientation in the diagnosis of the ...

  14. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    derniers entraînent des altérations de l'ADN des kératinocytes basaux et une diminution de leur activité mitotique. L'épithélium devient à terme atrophique et la capacité photoprotectrice est diminuée. Les femmes seraient relativement protégées par l'utilisa- tion de cosmétiques labiaux. Le traitement au laser CO2.

  15. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    (CT) of the petrous bone in patients with mixed hearing loss and a normal tympanic membrane. Results: ... Conclusion: Mixed hearing loss with a normal tympanic membrane should suggest superior semi circular canal dehis- cence. Coronal and ... La baisse de la conduction osseuse peut concerner uniquement les fré-.

  16. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    The surgical treatment consisted in a closing in one operative time of the veil, the hard palate and the lip, ... A standard managementl with a pre-established therapeutic ..... incisor status in a surgical-orthodontic protocol for complete clefts.

  17. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    Le bilan d'extension doit donc comporter systématiquement une radiographie du thorax, une échographie abdominale et une scintigraphie osseuse. Le pronostic du carcinome adénoïde kystique, tumeur plus agressive, est grevé d'une lourde mortalité à court terme. (10). Notre patiente est toujours en vie au terme de deux.

  18. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    Hakeem AH, Hazarika B, Pradhan SA, Kannan R. Primary pleomorphic ade- noma of minor salivary gland in the parapharyngeal space. World J Surg Oncol. 2009;7: 85. 15. Naoya K, Shoko G, Junko T, Mitsunobu K, Shumei M, Souhei F. CT and MR images of pleomorphic adenoma in major and minor salivary glands. Eur J.

  19. LES GOITRES BÉNINS EN ORL

    African Journals Online (AJOL)

    18 juin 2007 ... Montury S., de Clermont H, Gatina J.H. Prévalence des cancers thyroïdiennes à la Réunion à partir des données scinti- graphiques. Bull Patho Exot, 1997. 9. Moumen M, Touhami M, Elaoui M.E, Fares F.El. Les micro-carcinomes thyroïdiens. Médecine du Maghreb, 1992, 31 :25-28. 10. Ntyonga-Pono M.P.

  20. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    trou de sécurité platinaire avec interruption de l'interven- tion. Les vertiges sont fréquemment signalés les premiers jours post-opératoires. Dubreuil (8) a constaté des ver- tiges invalidants dans 2,2% des cas et Simoncelli dans. 1% des cas (15). Dans notre étude, une fermeture du. Rinne était meilleure en absence de d'un ...

  1. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    souvent indolore. Son histoire naturelle se fait vers lʼaug- mentation de volume et la dissémination métastatique ganglionnaire et pulmonaire essentiellement. Le pronostic est principalement lié à la taille de la tumeur. Le diagnos- tic se doit dʼêtre le plus précoce possible puisque le seul traitement efficace étant chirurgical ...

  2. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    INTRODUCTION. La tuberculose est une maladie infectieuse spécifique causée par une mycobactérie : le bacille de Koch, elle est devenue plus rare en raison de la vaccination et de lʼamé- lioration du cadre de la vie. Les localisations extrapulmonnaires de la tuberculose sont peu fréquentes. Elles représentent 0,5 à 10 ...

  3. MAQUETTE ORL Décembre 2004

    African Journals Online (AJOL)

    della tiroide. Chirurgia : 1994 ; 7 :315-18. 17-Morone G, Meriggi F, Forni E. : elementi di diagnostica a principi di terabit nel canro della tiroide : esperenza pavese 100anni dopo Bottini. G. Chir : 1992 ;. 13:193-298. 18-Block M.A, Miller J. M, Horn R. C. : Thyroid carcinoam with cervical lymph node metastasis. Am J Surg.

  4. Envejecimiento fisiológico y predisposición al trauma craneoencefálico

    OpenAIRE

    Mosquera Betancourt, Gretel

    2011-01-01

    Fundamento: el trauma craneoencefálico es la enfermedad neuroquirúrgica más frecuente en todos los grupos de edades y en el adulto mayor es la principal causa de morbilidad y de mortalidad neuroquirúrgica. El envejecimiento fisiológico predispone a la ocurrencia de esta variedad de traumas y a sus complicaciones. Objetivo: actualizar los conocimientos sobre los efectos del envejecimiento fisiológico, su predisposición al trauma craneoencefálico y a sus complicaciones en el adulto mayor. Desar...

  5. Análisis de las mutaciones más frecuentes del gen BRCA1 (185delAG y 5382insC en mujeres con cáncer de mama en Bucaramanga, Colombia

    Directory of Open Access Journals (Sweden)

    María Carolina Sanabria

    2009-03-01

    Conclusión. Se requieren más estudios en la región que abarquen la tamización de la totalidad del gen BRCA1, para hacer una mayor contribución al conocimiento de la epidemiología molecular del cáncer de mama en Bucaramanga, Santander, Colombia.

  6. Asesoría en la toma de decisiones frente al aborto

    Directory of Open Access Journals (Sweden)

    Vanegas Blanca Cecilia

    1994-11-01

    Full Text Available

    Uno de los dilemas éticos más frecuentes a que se ve enfrentado el profesional de salud, se presenta cuando una mujer o pareja solicita asesoría en la toma de decisiones frente al aborto provocado, como alternativa de solución al embarazo indesearlo. El artículo hace una serie de reflexiones a considerar, antes de tomar la decisión, tales como: la gravedad del problema, el drama de la mujer, aspectos religiosos, éticos y consecuencias en el hijo indeseado. Finalmente, propone una serie de pasos que guían al profesional de salud para ofrecer la asesoría y reflexiones sobre su participación en medidas preventivas.

  7. Detección y patrones de intervención en la disfunción sexual secundaria al uso de antidepresivos

    OpenAIRE

    Calama Martín, Julia

    2014-01-01

    [ES]La disfunción sexual(DS) asociada al uso de antidepresivos es un efecto secundario frecuente y subestimado por los clínicos. Los antidepresivos más frecuentemente relacionados con estos efectos secundarios son los ISRS, tricíclicos y duales. Estos efectos adversos afectan seriamente a la calidad de vida del paciente y de su pareja, relacionándose en gran medida con incumplimiento terapéutico. Estimar la prevalencia e intensidad de la disfunción sexual asociada al uso de diferentes anti...

  8. Evaluación de la tolerancia a la crioconservación de dos cepas de Escherichia coli K12 de uso frecuente en biotecnología

    Directory of Open Access Journals (Sweden)

    Diliana Celeste Pérez-Reytor*, Angela Estela Sosa Espinosa

    2010-08-01

    Full Text Available Uno de los métodos más recomendados para la conservación de E. coli es la congelación entre -20ºC y -70ºC, donde comúnmente se utiliza glicerol o dimetilsulfóxido como criopreservante. Los bancos de E. coli que se conservan por esta vía pueden mantener altas viabilidades por más de 10 años. A pesar de que es una práctica común están poco documentadas las diferencias que existen entre las cepas de interés biotecnológico en cuanto a la resistencia a la congelación. En este artículo se comparan dos cepas mutantes de E. coli K12: la cepa RRI y la cepa HB101, con el objetivo de evaluar el comportamiento de ambas a dos temperaturas de almacenamiento y diferentes concentraciones de glicerol, después de ocho ciclos sucesivos de congelación-descongelación. Las cepas estudiadas sólo difieren en su capacidad de reparación al daño sobre el ADN al presentar la HB101 una variante mutada del gen recA. Cuando se utilizó una temperatura de almacenamiento de -70 ºC y diferentes concentraciones de criopreservante las cepas tuvieron un comportamiento similar de supervivencia, después de los ocho ciclos. Sin embargo, el comportamiento de la supervivencia difiere cuando la temperatura de congelación en los ciclos es de -20 ºC. Además de la supervivencia y la estabilidad de los marcadores genéticos estudiados, observamos que el efecto de los ciclos de congelación y descongelación retardó el tiempo de aparición de las colonias en medio sólido.

  9. All About ALS

    Science.gov (United States)

    ... Subscribe August 2015 Print this issue All About ALS Understanding a Devastating Disorder En español Send us ... Sports Concussions Wise Choices How Can I Help ALS Research? If you have ALS, join the National ...

  10. Cuidados de enfermería al paciente con traumatismo de la columna vertebral

    Directory of Open Access Journals (Sweden)

    Moreno María Elisa

    1994-06-01

    Full Text Available

    Los traumatismos de columna vertebral afectan principalmente a adultos jóvenes en edad productiva. Su principal complicación la constituyen las lesiones medulares que son irreversibles y comprometen funciones corporales que limitan la independencia de las personas. El cuidado de enfermería para éste tipo de pacientes tiene como meta prevenir complicaciones, apoyar al paciente y motivarlo para que aproveche al máximo sus capacidades residuales en busca de su independencia. El presente artículo presenta un plan de cuidados basado en los diagnósticos de enfermería prioritarios y más frecuentes.

  11. Revisión de la descripción y tratamiento de las anomalías congénitas más frecuentes de la mano

    Directory of Open Access Journals (Sweden)

    Andrés A. Dogliotti

    Full Text Available Introducción y Objetivo. Este trabajo de revisión intenta aportar una introducción al vasto grupo de las anomalías congénitas de la mano enfocada en las 3 entidades más habituales en la consulta diaria, a saber: la sindactilia simple y la polidactilia radial, predominando una o la otra de acuerdo a la población y las publicaciones, y siendo su frecuencia de aproximadamente 1 por cada 2000 nacidos vivos; y el pulgar en resorte, cuya frecuencia es difícil de estimar pero se calcula que está en torno a los 3 por cada 1000 nacidos vivos. Nuestro objetivo en el presente trabajo es volcar la experiencia de más de 27 años de nuestro Servicio en estas 3 entidades, con las respectivas subclasificaciones utilizadas que nos guian en la indicación del tratamiento y las conductas quirúrgicas a seguir en cada tipo de anomalía. Material y Método. Para la recogida de nuestra casuística recopilamos la información sobre pacientes de una base de datos personal desde 2005 a 2016; y para los pacientes más antiguos, entre 1998 a 2006, consultamos una base de datos electrónica del Servicio de Cirugía Plástica y Quemados del Hospital de Pediatría Juan P. Garrahan, en Buenos Aires, Argentina, combinada con los registros de fichas (1987-2000 y complementada con el actual sistema de historias clínicas electrónicas del hospital (2014 a 2016. Llevamos a cabo también una revisión de la literatura sobre las 3 patologías que con más frecuencia vemos en consulta: el dedo en resorte congénito, la sindactilia congénita y la polidactilia radial. Resultados. El número de procedimientos quirúrgicos en casos con patología congénita de mano operados en nuestro Servicio entre 1988 y 2015 fue de 622. Gracias a la revision de la literatura encontramos una nueva clasificación de las anomalías congénitas de la mano basada en el sector y el eje predominantemente involucrado. Conclusiones. En las patologías congénitas de la mano resulta primordial

  12. Is geographical rarity frequent among the cacti of the Chihuahuan Desert? ¿Es la rareza geográfica frecuente entre las cactáceas del Desierto Chihuahuense?

    Directory of Open Access Journals (Sweden)

    Héctor M. Hernández

    2010-04-01

    rara geográficamente. Se sugiere que la rareza geográfica en cactáceas es un fenómeno natural; sin embargo, se propone que la distribución de algunas de las especies ha sido influenciada por actividades humanas. En lo que respecta al estado de conservación de las especies, 75 pueden ser consideradas bajo la categoría de Preocupación menor, mientras que las restantes 67 (47.2% caen en alguna de las categorías de amenaza (Vulnerable = 27 spp., Amenazada = 11 spp., Críticamente amenazada = 29 spp.. Los resultados confirman el grave estado de conservación de las cactáceas mexicanas.

  13. /Cu-Al System

    Science.gov (United States)

    Kish, Orel; Froumin, Natalya; Aizenshtein, Michael; Frage, Nachum

    2014-05-01

    Wettability and interfacial interaction of the Ta2O5/Cu-Al system were studied. Pure Cu does not wet the Ta2O5 substrate, and improved spreading is achieved when relatively a high fraction of the active element (~40 at.% Al) was added. The Al2O3 and AlTaO4 phases were observed at the Ta2O5/Cu-Al interface. A thermodynamic evaluation allowed us to suggest that the lack of wetting bellow 40 at.% Al is due to the presence of a native oxide, which covers the drop. The conditions of the native oxide decomposition and the formation of the volatile Al2O suboxide strongly depend on the vacuum level during sessile drop experiments and the composition of the Cu-Al alloy. In our case, Al contents greater than 40% provides thermodynamic conditions for the formation of Al2O (as a result of Al reaction with Al2O3) and the drop spreading. It was suggested that the final contact angle in the Ta2O5/Cu-Al system (50°) is determined by Ta adsorption on the newly formed alumina interlayer.

  14. Bankole et al (2)

    African Journals Online (AJOL)

    DELL

    Relationships of Clay-filled Channels on the Delta Flanks (Modified after Doust and Omatsola, 1990 and Lawrence et al., 2002). ... and in the Indo-Malaysian area (Germeraad et al.,. 1968). The genus ..... Upper Cretaceous of British Guiana.

  15. Lou Gehrig's Disease (ALS)

    Science.gov (United States)

    ... disease. Who Gets ALS? Although this disease can strike anyone, ALS is extremely rare in kids. According ... home to provide care that the family cannot handle alone. Living With Lou Gehrig's Disease Living with ...

  16. Aussprache als motorische Fertigkeit

    DEFF Research Database (Denmark)

    Bonner, Maria

    2013-01-01

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

  17. Tratamiento de la parasitosis intestinales frecuentes en Colombia

    Directory of Open Access Journals (Sweden)

    David Botero

    1981-12-01

    Full Text Available En la úitima década se han obtenido importantes avances en el tratamiento de las parasitosis intestinales (1. 2. La droga ideal, efectiva en dosis única contra todos o la mayoría de los parásitos del intestino, de bajo costo y sin toxicidad, todavía no se ha logrado. El enorme número de personas parasitadas, la mayoría de bajos recursos económicos y eluso de tratamientos en masa como medida de salud pública, hacen necesaria la obtención de nuevos medicamentos apropiados para este fin (3. Mencionaremos inicialmente las parasitósis y las drogas recomendadas y nos referiremos posteriormente a las drogas con más detalle.

  18. Amyotrophic lateral sclerosis (ALS)

    Science.gov (United States)

    Lou Gehrig disease; ALS; Upper and lower motor neuron disease; Motor neuron disease ... One out of 10 cases of ALS is due to a genetic defect. The cause is unknown in most other cases. In ALS, motor nerve cells (neurons) waste away ...

  19. Algunas contribuciones al debate sobre la clínica de las psicosis

    Directory of Open Access Journals (Sweden)

    Juan Manuel Rodríguez

    Full Text Available La clínica de las psicosis plantea la necesidad de establecer una modalidad de tratamiento diferente al tratamiento de las neurosis. Esta practica implica un trabajo multidisciplinario cercano y frecuente en donde se establecen algunas coordenadas fundamentales en el devenir del tratamiento. Asimismo, en el interior del grupo de trabajo se presentan algunos fenómenos similares a la dinámica propia del paciente psicotico, por ello se hace necesario considerar la locura del grupo como un factor dinámico del tratamiento. En este sentido es fundamental partir de la singularidad del paciente para desarrollar el modelo único en cada caso, en el cual la intervención es un elemento que pretende sostener aquello que falla en la dimensión delirante del paciente.

  20. Intervenções de enfermagem nas complicações mais freqüentes durante a sessão de hemodiálise: revisão da literatura Intervenciones de enfermería en las complicaciones más frecuentes durante la sesión de hemodialisis: revisión de la literatura Nursing interventions for the most frequent complications during hemodialysis procedure: literature review

    Directory of Open Access Journals (Sweden)

    Cristiano Dias Nascimento

    2005-12-01

    Full Text Available O procedimento hemodialítico tem complicações potenciais e o enfermeiro deve estar apto a intervir em tais complicações. Considerando este contexto, este artigo tem como objetivo descrever as complicações mais freqüentes relacionadas à hemodiálise e as intervenções de enfermagem a elas relacionadas. Esta revisão de literatura consiste em pesquisa as Bases de Dados, LILACS, BEDENF E MEDLINE, utilizando descritores pertinentes. Os resultados demonstraram que as complicações que ocorrem com maior freqüência são: hipotensão, hipertensão, cãibras musculares, náusea e vômito, cefaléia, dor torácica e lombar, prurido, febre e calafrios. Concluiu-se que o papel do enfermeiro é essencial para a monitorização, detecção e intervenção em tais complicações e que este é um diferencial para a obtenção de segurança e qualidade no procedimento hemodialítico. No entanto, existe a necessidade de realização de mais pesquisas na área de enfermagem para melhor definir a atuação do enfermeiro.Lo procedimiento de hemodialisis tiene complicaciones potenciales y los enfermeros deben estar aptos a intervenir en ellos. Al considerar esto contexto, lo artículo objectiva describir las complicaciones más frecuentes relacionadas a la hemodialisis así como las intervenciones de enfermería. Esta revisión bibliografica ha consistido de busqueda a las basis de datos LILACS, DBENF y MEDLINE usandose descriptores pertinentes. Resultados han demonstrado que las mayores complicaciones son: hipotensión, hipertensión, distres musculares, nausea, vomitos, cefalea, dolor toracica y lumbar, prurido, fiebre y calafrios. Se ha concluido que el papel del enfermero es esencial para la monitorización, identificación y intervención en estas complicaciones y que esto papel tanbien es uno diferencial para obterse la calidad en lo procedimiento hemodialitico. Entremientes, hay una necessidad de realizarse más pesquisas en la area de enfermer

  1. 143 - 148_Makeri et al.

    African Journals Online (AJOL)

    USER

    2015-06-01

    Jun 1, 2015 ... Yuan et al., 2003), antimicrobial activity (Sundarrao et al., 1993; Betancur-Galvis et al., 1999; Takashi et al., 2006), anti-parasitic, anti-malarial activities (Alali et al., 1998; Jaramillo et al., 2000; Luna et al.,. 2005). This study evaluates the antibacterial activity of extract of stem –bark and leaf extracts of Annona.

  2. Abu al-Layth al-Libi

    Science.gov (United States)

    2015-02-01

    success. As an Arab participant acknowledged very early on, “the situation was really harsh. All the brothers were tired,” as they lacked food and... glorious battles that occurred during the early Islamic period.133 He stressed the importance of the battlefield as the path to achieve honor and dignity...diaspora in Waziristan. In the words of Walid Othmani, a French jihadi trained by al-Qa`ida in Waziristan in 2008, “[Al-Libi] was someone well-known and

  3. Pornographie als Metapher

    Directory of Open Access Journals (Sweden)

    Caroline Schubarth

    2010-02-01

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

  4. Alles is al uitgevonden

    NARCIS (Netherlands)

    J.G.M. van Marrewijk (Charles)

    1996-01-01

    textabstractDe voordelen van vrijhandel zijn zeer beperkt, al-thans als we de empirische schattingen van vooraanstaande economen en internationale organisaties mogen geloven. Zo worden de voordelen van liberalisatie voor de Europese Unie geraamd op ongeveer 0,5% van het bnp 1. De door het IMF

  5. Lukman et al. (5)

    African Journals Online (AJOL)

    DELL

    1 Civil Engineering Department, Obafemi Awolowo University, Ile-Ife- Nigeria and Corresponding author. 2Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Samaru, Zaria- Nigeria s Department of Civil Engineering, University of Hafr Al-Batin, Hafr Al-Batin, Saudi Arabia.

  6. Interview als Text vs. Interview als Interaktion

    Directory of Open Access Journals (Sweden)

    Arnulf Deppermann

    2013-09-01

    Full Text Available Das Interview ist nach wie vor das beliebteste sozialwissenschaftliche Verfahren des Datengewinns. Ökonomie der Erhebung, Vergleichbarkeit und die Möglichkeit, Einsicht in Praxisbereiche und historisch-biografische Dimensionen zu erhalten, die der direkten Beobachtung kaum zugänglich sind, machen seine Attraktivität aus. Zugleich mehren sich Kritiken, die seine Leistungsfähigkeit problematisieren, indem sie auf die begrenzte Reichweite der Explikationsfähigkeiten der Befragten, die Reaktivität der Erhebung oder die Differenz zwischen Handeln und dem Bericht über Handeln verweisen. Im Beitrag wird zwischen Ansätzen, die das Interview als Text, und solchen, die es als Interaktion verstehen, unterschieden. Nach dem Text-Verständnis werden Interviews unter inhaltlichen Gesichtspunkten analysiert und als Zugang zu einer vorgängigen sozialen oder psychischen Wirklichkeit angesehen. Das Interaktions-Verständnis versteht Interviews dagegen als situierte Praxis, in welcher im Hier und Jetzt von InterviewerInnen und Befragten gemeinsam soziale Sinnstrukturen hergestellt werden. Anhand ubiquitärer Phänomene der Interviewinteraktion – Fragen, Antworten und die Selbstpositionierung von InterviewerInnen und Befragten – werden Praktiken des interaktiv-performativen Handelns im Interview dargestellt. Ihre Relevanz für die Interviewkonstitution und ihre Erkenntnispotenziale für die Interviewauswertung werden aufgezeigt. Es wird dafür plädiert, die interaktive Konstitutionsweise von Interviews empirisch zu erforschen und methodisch konsequent zu berücksichtigen. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs1303131

  7. Intervenções de enfermagem para os diagnósticos de enfermagem mais freqüentes em dois serviços públicos de assistência à saúde da mulher Intervenciones de enfermería para los diagnósticos de enfermería más frecuentes en ginecología en centros regionales de salud Nursing interventions formulated for the most frequent nursing diagnoses in gynecology at two regional health centers

    Directory of Open Access Journals (Sweden)

    Maria Auxiliadora de Souza Gerk

    2005-09-01

    establecimiento de las intervenciones. OBJETIVOS: Constucción de las intervenciones de enfermería MÉTODO: Foram analisados 165 protocolos de consulta de enfermagem nas quais havia sido utilizado um instrumento de levantamento de dados sistematizado. RESULTADOS: Las acciones establecidas más frecuentes fueron 'orientar', 'referir ‘explicar y provenir. CONCLUSIÓN: Determinando las intervenciones, verificamos la extrema necesidad del trabajo multidisciplinar, pues la acción ''direccionar'' ha significado , en nuestra pesquisa, lo equivalente al direccionamiento a otros campos de salud. Y además de eso ha sido constatado la importancia de la enfermera como educadora.INTRODUCTION: This study constitutes a descriptive, analytical, and retrospective research on the nursing interventions formulated for the most frequent nursing diagnoses in gynecology identified for 165 women seen at outpatient nursing appointments held at two regional health centers in Campo Grande, MS, Brazil. The interventions were developed from axes A (action type, B (target, C (means, and H (beneficiary of the ICNP® Nursing Actions Classification (Beta 2 version. OBJECTIVES: Establish nursing interventions and nursing outcomes. METHOD: The data on the population were obtained from the protocols of 165 outpatient consultation sessions. RESULTS: Sixty nursing diagnoses were identified, whose simple frequency ranged from 1 to 137, and the five most frequent ones were selected for establishing the nursing interventions. The actions most frequently established were ‘guiding’, ‘referring’, ‘explaining’, and ‘providing’. CONCLUSIONS: While formulating the interventions, an urgent need for multidisciplinary work was perceived, considering that the action ‘referring’, in the scope of this research, equated the referral to diverse health care services. Another finding was the evidence that nurses play a pivotal role as education agents.

  8. Universitat popular al Cabanyal

    OpenAIRE

    Ribés Granell, Juan Miguel

    2012-01-01

    La intención es dotar al barrio de un gran espacio verde y de un edificio de interés para los vecinos que enriquezca al Cabanyal, ya que actualmente se encuentra en proceso de degradación. Se pretende desarrollar un proyecto que signifique una mejora en la predisposición del visitante, cubriendo sus necesidades. Al mismo tiempo, se busca crear un espacio arquitectónico que mejore la relación entre las actividades que incluye y su entorno. El proyecto está condicionado por cuatro aspectos fund...

  9. Advanced Light Source (ALS)

    Data.gov (United States)

    Federal Laboratory Consortium — The Advanced Light Source (ALS), a world leader in soft x-ray science, generates light in the wavelengths needed for examining the atomic and electronic structure of...

  10. Taiwo et al (15)

    African Journals Online (AJOL)

    Timothy Ademakinwa

    geometric rise in preference for commercial aquaculture .... content, malondialdehyde level and lipid content of the muscle of the .... other researchers on the gilthead sea bream (Mnari et al., 2007), the .... 23, Orlando, Florida, USA, pp. 18–28.

  11. Okusanya et al (5)

    African Journals Online (AJOL)

    DELL

    rainfall and number of days with rain per month were obtained from Meteorological Institute, Oshodi, Lagos- ... Central and South America, Australia, West. Indies, Africa, (Orwa et al., 2009) and in Florida .... dominant forest tree species. In this ...

  12. Initial Symptoms of ALS

    Science.gov (United States)

    ... have trouble grasping a pen or lifting a coffee cup, while another person may experience a change ... Start your own fundraising event & help create a world without ALS Start an Event Site Map | Press ...

  13. ALS (Amyotrophic Lateral Sclerosis)

    Science.gov (United States)

    ... FDA) has approved the drugs riluzole (Rilutek) and edaravone (Radicava) to treat ALS. Riluzole is believed to ... reverse the damage already done to motor neurons. Edaravone has been shown to slow the decline in ...

  14. Amyotrophic Lateral Sclerosis (ALS)

    Science.gov (United States)

    ... found for ALS. However, the drugs riluzole and edaravone have approved by the Food and Drug Administration ( ... 2-3 months but does not relieve symptoms. Edaravone can slow the clinical decline in daily functioning ...

  15. Obuotor et al (16)

    African Journals Online (AJOL)

    DELL

    fractions and essential oils from the leaves of Eugenia uniflora were investigated on some multidrug resistant pathogens. ... et al., 1987), a reduction in blood pressure measured ..... from E. uniflora suggests high efficacy against this bacterium.

  16. Fakinle et al (11)

    African Journals Online (AJOL)

    DELL

    management issues; there is however a concern about air emissions from the ... poses risks to humans and animals through ... Nigeria have focused on cement industries. (Adejumo et al. ... based MCA which controls the sample holder and.

  17. Ogunyemi et al (17)

    African Journals Online (AJOL)

    DELL

    The results of physicochemical analysis revealed that the concentrations of ... scientific basis for regulating the discharge of potentially ... method for genotocity evaluation using Allium cepaand it ..... al., 2013). National agency for food and drug.

  18. Omotayo et al (4)

    African Journals Online (AJOL)

    DELL

    using biochemical technique and API 20E identification system. The isolates were .... sulphate, phosphate, ammonia and appearance. Heavy metals ... technique as described by Collee et al. (1989) was ..... enzymatic methods. Water Res. 36,.

  19. David et al (12)

    African Journals Online (AJOL)

    DELL

    larger mesophyll cells, xylem tissues, vascular bundles and bundle sheaths than other cultivars. Thus, larger ... mechanism to cope with drought stress. There was an ... where solar radiation is intense (Løe et al., 2007). Most ecological studies ...

  20. Cartas al editor

    Directory of Open Access Journals (Sweden)

    Facultad de Medicina Revista

    1995-10-01

    Full Text Available Con respecto al ensayo "Evaluación del aprendizaje en la educación superior" de la Dra. Análida Pinilla / Ciencia y conciencia en la medicina colombiana / Farmacovigilancia: Una necesidad urgente

  1. Kulturmorphologie als Zivilisationskritik

    DEFF Research Database (Denmark)

    Peters, Rikke Alberg

    2010-01-01

    Der Untergang des Abendlandes wird oft als dasjenige Werk betrachtet, das am tiefsten die national gefärbte Gegenüberstellung von Kultur und Zivilisation in der Zwischenkriegszeit geprägt und propagiert hat. Wie auch bei anderen Autoren der Konservativen Revolution, vor allem bei Thomas Mann und...... Arthur Moeller van den Bruck, tritt der Begriff ‚Kultur’ bei Spengler als normativer Wertbegriff auf, der im Kontrast zu einer degenerierten und seelenlosen Zivilisation steht....

  2. ESTUDIO COMPARATIVO DEL EFECTO DE CRANEO-ACUPUNTURA VS ACUPUNTURA CORPORAL, EN PACIENTES CON SECUELAS DE ENFERMEDAD VASCULAR CEREBRAL EN EL HOSPITAL REGIONAL DEL INSTITUTO DE SEGURIDAD SOCIAL AL SERVICIO DE LOS TRABAJADORES DEL ESTADO DE PUEBLA

    OpenAIRE

    MENDEZ MENDEZ, NAZARIO CELSO

    2011-01-01

    ESTUDIO COMPARATIVO DEL EFECTO DE LA CRANEOACUPUNTURA VS ACUPUNTURA CORPORAL, EN PACIENTES CON SECUELAS DE ENFERMEDAD VASCULAR CEREBRAL EN EL HOSPITAL REGIONAL DEL INSTITUTO DE SEGURIDAD SOCIAL AL SERVICIO DE LOS TRABAJADORES DEL ESTADO DE PUEBLA. LAS SECUELAS DE EVC SON UN PROBLEMA DE SALUD PUBLICA, CON MAYOR FRECUENCIA DE LA ISQUEMIA 81.25 POR CIENTO POR CIENTO Y EN SEGUNDO LUGAR LA HEMORRÁGICA CON EL 18.75 POR CIENTO, EL SEXO FEMENINO ES LA MAS FRECUENTE Y LA EDAD MAS AFECTADA ES DE LO...

  3. Respuesta al tapiz rodante y entrenamiento en niños con riesgo de retraso en el desarrollo motor

    OpenAIRE

    Valentín Gudiol, Marta

    2014-01-01

    El recién nacido prematuro y los bebés de bajo peso al nacer frecuentemente presentan retrasos/anomalías en el desarrollo motor, cognitivo y emocional(1). Son una población que será clasificada como niños con riesgo de retraso en el desarrollo psicomotor(2). Uno de los diagnósticos más frecuentes en esta población es el de parálisis cerebral (PC)(3), que suele establecerse a partir de los 12 meses de edad del niño(4). El tapiz rodante se ha utilizado en población pediátrica con diferentes dia...

  4. Coupled growth of Al-Al2Cu eutectics in Al-Cu-Ag alloys

    International Nuclear Information System (INIS)

    Hecht, U; Witusiewicz, V; Drevermann, A

    2012-01-01

    Coupled eutectic growth of Al and Al 2 Cu was investigated in univariant Al-Cu-Ag alloys during solidification with planar and cellular morphology. Experiments reveal the dynamic selection of small spacings, below the minimum undercooling spacing and show that distinct morphological features pertain to nearly isotropic or anisotropic Al-Al 2 Cu interfaces.

  5. Version pediátrica del protocolo de evaluación de la adecuación (PAE: Aplicación a los cuatro Grupos Diagnósticos relacionados más frecuentes en un hospital infantil de la Coruña

    Directory of Open Access Journals (Sweden)

    Saleta Canosa Jesús Luis

    1997-01-01

    Full Text Available FUNDAMENTO: Existe un amplio consenso en que una parte de la utilización de los recursos hospitalarios es inadecuada, en el sentido de que los pacientes reciben servicios que no les proporcionan beneficios significativos, o bien, que podrían ser más beneficiosos, o menos costosos, en un nivel asistencial inferior. El objetivo principal de este trabajo es determinar, mediante la aplicación retrospectiva de la versión pediátrica del Protocolo de Evaluación de la Adecuación (AEP, el porcentaje de ingresos y estancias inadecuadas de los 4 Grupos Relacionados con el Diagnóstico (GDR más frecuentes en un hospital materno-infantil. MÉTODO: Se trata de un estudio retrospectivo en el que se analizan 353 historias clínicas (HC de las 361 que constituyen la población de estudio. Como análisis estadístico se utiliza Chi cuadrado y análisis de tendencia lineal. Sobre las medias obtenidas se aplicó un análisis de la varianza y la prueba de comparación múltiple de Scheffé. RESULTADOS: Las admisiones fueron juzgadas como adecuadas en 284 (80,5% de los casos e inadecuadas en 69 (19,5%. El 76% de las estancias revisadas fueron juzgadas como apropiadas y el 24% como inapropiadas. En el GDR 030 (estupor y coma de origen traumático, coma<1 hora, edad 0-17 se aprecia una relación directa entre duración de la estancia y uso inapropiado de la hospitalización. CONCLUSIONES: De los resultados de este estudio se desprende que una sustancial proporción de la utilización en el hospital es inapropiada y que, particularmente en el GDR 030, es probable se esté efectuando un manejo especialmente conservador.

  6. Pornographie als Metapher

    Directory of Open Access Journals (Sweden)

    Caroline Schubarth

    2010-03-01

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

  7. Prevalencia de malformaciones congénitas detectadas al nacimiento en un hospital de segundo nivel en Sinaloa

    Directory of Open Access Journals (Sweden)

    Ana Beatriz Calderón-Alvarado

    2017-11-01

    Full Text Available INTRODUCCIÓN: la prevalencia de malformaciones congénitas (MC detectadas al nacimiento es de 2 a 5.5 neonatos vivos, variando significativamente según las características de la población y metodología del estudio.   OBJETIVO: determinar la prevalencia y tipos de MC en los recién nacidos atendidos por el servicio de neonatología en un periodo de un año.   MATERIAL Y MÉTODOS: estudio transversal. Se revisaron expedientes clínicos de recién nacidos vivos atendidos en el servicio de neonatología de nuestra institución durante el año 2015. Se incluyeron neonatos con alteraciones morfológicas detectadas al nacimiento y/o antes del alta hospitalaria, referidas en el expediente.   RESULTADOS: se detectaron 117 MC en 98 neonatos, de un total de 4,097 estudiados, obteniendo una prevalencia de 2.39% en el análisis por individuo y de 2.85%, tomando en cuenta el total de MC. Los aparatos y sistemas más afectados fueron: genitourinario (29.1%, osteomuscular (21.4% y circulatorio (16.2%. Las MC más frecuentes fueron: criptorquidia (14.5%, hipospadias (12.8% y anquiloglosia (10.3%. CONCLUSIÓN: la tasa de prevalencia de MC fue de 23.9 por 1,000 recién nacidos vivos, lo cual coincide con la reportada en el resto del mundo, siendo el aparato genitourinario el más afectado y la criptorquidia la MC más frecuente en nuestra población.

  8. BERKELEY: ALS ring

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    1993-06-15

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

  9. Alimba et al (5)

    African Journals Online (AJOL)

    USER

    There was significant (p<0.05) increase in erythrocytes, haemoglobin ... for its anti-hemorrhoid and anti-inflammatory properties (Afolabi et al., 2008), ... genome instability which may lead to genetic related diseases ... membrane, behavioral pattern, morbidity and mortality. ..... extracts of Phyllanthus amarus in mice and rats.

  10. Taiwo et al (8)

    African Journals Online (AJOL)

    DELL

    Ife Journal of Science. (2016) vol. 18, no. 4. SPATIAL ... Ogun State. On the contrary, published work in some parts of Nigeria had ..... Prevalence among. Age Group (%). Cause of Infection. (%). Adeoye et al.,. 2007. Lagos. Kato-Katz. A. lumbricoides =29.7. Hookworm = 0.7. T. Trichiura = 18.4. S. stercoralis =0.3. Total =49.1.

  11. Rossie et al

    African Journals Online (AJOL)

    PUBLICATIONS1

    ing onto the torso for bike riders (Blocken et al., 2013) or it might ... designing new vehicles as well as for drawing up specific training ... These models were chosen because they repre- ..... muscles is relevant since the bio-mechanical workload ...

  12. aboagye et al.2

    African Journals Online (AJOL)

    PUBLICATIONS1

    14 Aboagye et al. wide variety of birds, including chickens, by piercing the quills of feathers and gnawing the epidermis. In doing so, they can spread disease and lower .... evolution. Oikos, 97: 223-228. Nordenfors, H. and Chirico, J. (2001). Evalua- tion of a sampling trap for Dermanyssus gal- linae (Acari: Dermanyssidae).

  13. Fadimu et al

    African Journals Online (AJOL)

    coconut water has the potential to increase growth and nutritional value of S. mombin(Linn.) so that S. mombin ... of plant growth and development, including seed maturation and ... et al., 2000). Auxins are primary regulators of plant form while ...

  14. Bello et al (9)

    African Journals Online (AJOL)

    Timade VENTURE

    family Solanaceae and it is one of the largest and ... al.,2004). The taxonomy of this important genus is of ... importance of numerical taxonomic method in ..... SME. SAE. SAM. SNI. SER. SWR. SMA. SGI. -6.4. -4.8. -3.2. -1.6. 0. 1.6. 3.2. 4.8.

  15. Iraq and Al Qaeda

    National Research Council Canada - National Science Library

    Katzman, Kenneth

    2008-01-01

    .... The Administration assertions were derived from U.S. intelligence showing a pattern of contacts with Al Qaeda when its key founder, Osama bin Laden, was based in Sudan in the early to mid-1990s and continuing after he relocated to Afghanistan in 1996...

  16. Iraq and Al Qaeda

    National Research Council Canada - National Science Library

    Katzman, Kenneth

    2007-01-01

    .... The Administration's assertions were derived from U.S. intelligence showing a pattern of contacts with Al Qaeda when its founder, Osama bin Laden, was based in Sudan in the early to mid-1990s and continuing after he relocated to Afghanistan in 1996...

  17. Ojo et al (2)

    African Journals Online (AJOL)

    DELL

    network geometry hence control how the samples' ... generate different permeability curves from wire- ... occupy in the reservoir pore system (McPhee et. ..... Fig.3. Poroperm cross-plot for a homogenous reservoir. Ojo et al.: Rock Type Based ...

  18. Agwu et al (6)

    African Journals Online (AJOL)

    DELL

    Enterobacteriaceae, the bacteria Escherichia coli is regarded as non-halophilic, and cannot tolerate high salt concentrations (Abdulkarim et al., 2009). Nevertheless, some strains of E. coli are halo- tolerant and survive in high salt concentrations. The ability to demonstrate such high osmotic pressure is possibly due to the ...

  19. Dichtung als Erfahrungsmetaphysik

    DEFF Research Database (Denmark)

    Magnusson, Gisli

    Rilkeforskning. Fordi Rilke ikke – uden at gøre vold mod hans værk – kan fortolkes ud fra et traditionelt religiøst verdensbillede, har man fortolket ham som en antimetafysisk mo­dernist. Afhandlingen Dichtung als Erfahrungsmetaphysik. Esoterische und okkultistische Modernität bei R. M. Rilke argumenterer for...

  20. Nucleosynthesis of 26Al

    International Nuclear Information System (INIS)

    Casse, M.

    1986-07-01

    A burst of interest has followed the discovery in the galactic plane of the 1.8 MeV gamma line attached to the decay of 26 Al. We discuss the relative merits of supernovae, novae, massive and supermassive mass-losing stars as potential sources of this expressive isotope

  1. Njukeng et al. + DOI

    African Journals Online (AJOL)

    confo

    3 Institute of Agricultural Research and Development (IRAD), Bambui, North West Province, Cameroon. ... Potato (Solanum tuberosum L.) is an important cash-food crop, which is widely ... production in Africa nearly tripled over the past 35 years ... Njukeng et al, Prevalence of Viruses in Potato Seed Tubers in the North West ...

  2. Comentarios al Salto Social

    Directory of Open Access Journals (Sweden)

    Facultad de Ciencias Económicas

    1995-06-01

    Full Text Available 1. El Plan considera que la política social es un componente central de la estrategia macroeconómica. A diferencia de la administración Gaviria, lo social ha dejado de ser un asunto marginal, es consustancial al desarrollo y, por tanto, se le confiere una dimensión cualitativamente diferente.

  3. Hamid et al (24)

    African Journals Online (AJOL)

    USER

    acne, and eye problems (Diaz-Bolio, 1975). Cnidoscolus aconitifolius roots and leaves have been taken as a laxative, diuretic, circulation stimulant, to increase digestion, stimulant for lactation, and to harden the fingernails (Rowe, 1994; Kuti, and. Torres, 1996). Oyagbemi et al., (2011) reported the proximate analysis and ...

  4. Esuuman et al (17)

    African Journals Online (AJOL)

    big timmy

    ether (Sathe et al., 2002). Various extraction conditions such as pH, solvent types (NaOH, NaCl or Ethanol), solvent concentration, extraction time, solvent/flour ratio, may affect the final properties of the extracted protein. When many factors and interactions affect desired responses in a certain process design, Response.

  5. BERKELEY: ALS ring

    International Nuclear Information System (INIS)

    Anon.

    1993-01-01

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

  6. Proton irradiation studies on Al and Al5083 alloy

    Science.gov (United States)

    Bhattacharyya, P.; Gayathri, N.; Bhattacharya, M.; Gupta, A. Dutta; Sarkar, Apu; Dhar, S.; Mitra, M. K.; Mukherjee, P.

    2017-10-01

    The change in the microstructural parameters and microhardness values in 6.5 MeV proton irradiated pure Al and Al5083 alloy samples have been evaluated using different model based techniques of X-ray diffraction Line Profile Analysis (XRD) and microindendation techniques. The detailed line profile analysis of the XRD data showed that the domain size increases and saturates with irradiation dose both in the case of Al and Al5083 alloy. The corresponding microstrain values did not show any change with irradiation dose in the case of the pure Al but showed an increase at higher irradiation doses in the case of Al5083 alloy. The microindendation results showed that unirradiated Al5083 alloy has higher hardness value compared to that of unirradiated pure Al. The hardness increased marginally with irradiation dose in the case of Al5083, whereas for pure Al, there was no significant change with dose.

  7. Traumatismes externes du larynx | Ghorbal | Journal Tunisien d'ORL ...

    African Journals Online (AJOL)

    Le but de ce travail est de rappeler la présentation clinique des traumatismes externes du larynx et d'étayer notre attitude dans la prise en charge de ces ... Introduction: External laryngeal trauma is rare but acutely life-threatening. ... The main presenting symptoms were hoarseness, cervical pain, dyspnea and bleeding.

  8. La nasofibroscopie en pratique orl a ouagadougou | Ouedraogo ...

    African Journals Online (AJOL)

    Il s'est agi d'une étude rétrospective qui a permis d'analyser les dossiers de 115 patients ayant bénéficié d'une nasofibroscopie au Centre Médical Schiphra entre mars 2007 à mars 2010. L'âge moyen des patients était de 41,34 ans avec une prédominance masculine de 52 % des cas. Les patients étaient en majorité des ...

  9. Carcinome parathyroidien | Gassab | Journal Tunisien d'ORL et de ...

    African Journals Online (AJOL)

    Parathyroid cancer is uncommon and its etiology is largely unknown. It is difficult to diagnose. The preoperative syndrome is unusually severe primary hyperparathyroidism. Intraoperatively, many characteristics of the tumor may be highly suggestive. Confirmation requires pathological analysis of the operative specimens ...

  10. Dermatosis de origen alimentario al regreso de un viaje: gnathostomiasis

    Directory of Open Access Journals (Sweden)

    Tomás A. Orduna

    2013-12-01

    Full Text Available Se describe el caso de un paciente de 32 años de edad, residente en Buenos Aires, con manifestaciones dermatológicas compatibles con gnathostomiasis. Había realizado un viaje a Colombia en el mes previo a la aparición de la sintomatología. Allí consumió cebiche (pescado crudo marinado en jugo de limón en reiteradas oportunidades. El cuadro clínico se presentó como paniculitis eritematosa y migratoria acompañada de eosinofilia sanguínea. Se le realizó biopsia cutánea de una lesión y el diagnóstico anatomopatológico fue "paniculitis eosinofílica". La tríada de paniculitis migratoria, eosinofilia sanguínea y el consumo de pescado crudo durante el viaje a Colombia fue sugestiva de gnathostomiasis por lo que se indicó tratamiento con ivermectina con buena evolución inicial y recaída posterior. Se realizó un nuevo tratamiento con la misma droga con buena evolución y sin recaídas durante tres años de seguimiento. La afección dermatológica es un motivo frecuente de consulta al regreso de un viaje, y representa la tercera causa de morbilidad en viajeros. Es muy importante el reconocimiento de las enfermedades que pueden tener manifestación cutánea, ya que muchas de ellas son potencialmente graves y pueden poner en riesgo la vida del paciente si no son oportunamente diagnosticadas y tratadas.

  11. Factores asociados al bajo peso al nacer

    Directory of Open Access Journals (Sweden)

    Georgina J Peraza Roque

    2001-10-01

    Full Text Available El bajo peso al nacer (BPN ha constituido un enigma en la ciencia a través de los tiempos. Múltiples son las investigaciones realizadas acerca de las causas que lo producen y las consecuencias que provoca. Su importancia no solo radica en lo que significa en la morbilidad y la mortalidad infantil, sino que estos niños tienen habitualmente múltiples problemas posteriores. El Programa para la Reducción del BPN señala que los niños nacidos con un peso inferior a los 2 500 g presentan riesgo de mortalidad 14 veces mayor durante el primer año de vida, en comparación con los niños que nacen con un peso normal a término. Dentro de los factores de riesgo del BPN se han encontrado con mayor frecuencia en estudios realizados por diferentes autores, los siguientes: el embarazo en la adolescencia, la desnutrición en la madre, el hábito de fumar, la hipertensión arterial durante el embarazo, la sepsis cervicovaginal, la anemia y los embarazos gemelares, entre otros. Es innegable la influencia que el BPN tiene sobre las futuras generaciones, por lo que debe constituir la diana de los esfuerzos que el médico y la enfermera deben desarrollar en su prevención, sobre todo en la comunidadLow birth weight has been an enigma for Science through times. A lot of research works have been carried out about its causes and consequences. The importance of LBW not only lies in its meaning for infant mortality and morbidity but also in the many problems that low birth weight children regularly face in the future. The program for the reduction of LBW points out that newborns weighing under 2500g have during his/her first year of life a mortality risk 14 times higher than newborns with a normal weight at term. Among the low birth weight risk factors, a number of studies by various authors have frequently found the following; pregnancy at adolescence; undernourishment in mothers, smoking, blood hypertension during pregnancy, cervix-vaginal sepsis; anemia, twin

  12. Reacciones Adversas al Tratamiento Antirretroviral de Gran Actividad Inicial en el Hospital Santa Rosa - Piura.

    Directory of Open Access Journals (Sweden)

    Jiovany Jhan Carlos Saldaña-Gastulo

    2009-01-01

    Full Text Available Objetivo, Determinar la incidencia y factores asociados a reacciones adversas medicamentosas (RAM al TARGA inicial durante el periodo enero 2006 - diciembre 2007 en el Hospital de Apoyo Santa Rosa-Piura. Diseño, Se realizó un estudio analítico de cohorte retrospectiva. Lugar, Hospital de Apoyo Santa Rosa-Piura. Participantes, 107 historias clínicas de pacientes VIH positivos mayores de 18 años que recibieron TARGA y fueron atendidos durante este periodo en el consultorio de infectología. Intervenciones, Se analizaron retrospectivamente las historias clínicas que fueron pertinentes para la recolección de datos. Principales medidas de resultado, Analisis Univariado, Bivariado (t de Student, y Riesgo Relativo, multivariado (Regresión logística con 95% de confianza (p<0.05. Resultados, En 107 pacientes se encontró una incidencia acumulada de 66,35% de RAM al TARGA inicial. Las RAM experimentadas con mayor frecuencia fueron anemia (35,2%, rash (16,9% y vómitos (9,9%. Se encontró diferencias significativas entre la media de edad y la presencia de RAM con la prueba de t de student (p < 0.05 Conclusiones, Existe una alta incidenica de RAM en pacientes incluidos en TARGA, siendo la más frecuente la anemia en 25 pacientes (35,2%. La media de edad es mayor en pacientes con RAM.

  13. De GPS al mapa

    Directory of Open Access Journals (Sweden)

    Esteban Dörries

    2016-03-01

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

  14. ALS insertion devices

    International Nuclear Information System (INIS)

    Hoyer, E.; Chin, J.; Halbach, K.; Hassenzahl, W.V.; Humphries, D.; Kincaid, B.; Lancaster, H.; Plate, D.

    1990-11-01

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

  15. Adekola et al (7)

    African Journals Online (AJOL)

    Timothy Ademakinwa

    the South Atlantic between Latitudes 31° and 33.5 ... South Atlantic Ocean in the Early Cretaceous, around 136 Ma (Brown et al., 1996; Reeves and de. Wit, 2000 ..... 3244. 3246.70. L o w e r C re ta c e o u s. P e rio d. /E p o c h. 3244. 3246.70. B a ..... moderate counts of forest species such as ... The other, near shore is rich.

  16. Factores asociados al uso regular de fuentes de información en estudiantes de medicina de cuatro ciudades del Perú

    Directory of Open Access Journals (Sweden)

    Christian R Mejía

    Full Text Available Objetivos. Determinar los factores asociados al uso regular de fuentes de información en estudiantes de Medicina de cuatro ciudades de Perú. Materiales y métodos. Estudio transversal analítico, se encuestó a estudiantes de Medicina de cuatro ciudades del Perú, recopilando información del uso de 14 fuentes de información y otras variables educativas e informáticas. Se definió uso frecuente de la fuente de información si accedía a ella mínimo una vez a la semana. Se obtuvieron los valores p mediante modelos lineales generalizados ajustando por la sede de cada encuestado. Resultados. Se encuestaron 2300 estudiantes con una mediana de edad de 21 años, el 53% fueron mujeres. El recibir una capacitación para el uso de las fuentes incrementó el uso en doce de las bases consultadas, no en SciELO (p=0,053 ni en la biblioteca universitaria (p=0,509. Cuando se añadió el ajuste por poseer una laptop/netbook se mantuvieron dichas asociaciones. Al ajustar también por poseer un smartphone se perdió la asociación con la base BVS Perú (p=0,067, lo mismo ocurrió al hacer el último ajuste, si había realizado alguna actividad de investigación. Conclusiones. El uso frecuente de las fuentes de la información está asociado con haber recibido capacitación, realizar investigación y el uso de las tecnologías de la información y comunicación. Esto debe ser tomado en cuenta en programas de capacitación y mejora continua en el pre y posgrado.

  17. Tratamiento por Medicina Natural y Tradicional de la rinitis alérgica

    Directory of Open Access Journals (Sweden)

    Yanelis Santos Díaz

    2015-11-01

    Full Text Available La rinitis alérgica es uno de los problemas de salud más comunes y una de las principales causas de consulta médica en el mundo y en Cuba. Los resultados de los métodos de Medicina Natural y Tradicional han sido contradictorios en la terapia de la enfermedad. Se estudiaron 50 pacientes atendidos en el Servicio de Medicina Natural y Tradicional del Policlínico “Aquiles Espinosa Salgado” del municipio de Las Tunas, desde septiembre del 2008 a septiembre de 2009. El esquema de tratamiento tuvo en cuenta los puntos V2, IG4, B10, VG20 y E3 en dos sesiones semanales durante ocho semanas, hasta completar 16 sesiones; al culminar la 2da, 4ta, 6ta, 8va semana se valoraron los resultados con una encuesta. La obstrucción nasal fue el síntoma más frecuente en los enfermos atendidos, en el 96% de los casos. Al finalizar el esquema de tratamiento, el 86% de los sujetos mejoraron la severidad y frecuencia de los síntomas. Solo se reportó un efecto adverso, con la formación de un hematoma en el sitio de aplicación, lo que fue catalogado como reacción leve. No ocurrieron salidas ni pérdidas de casos en el estudio. El esquema aplicado tuvo resultados satisfactorios, lo que refuerza la utilidad de los métodos de medicina natural y tradicional en el manejo de la rinitis alérgica.

  18. Flipped Classroom al laboratori

    OpenAIRE

    Molés Bort, Jaume

    2014-01-01

    L'article presenta una experiència d'aprenentatge de la geologia mitjançant el treball en grups d'experts. Els alumnes han d'indagar i promoure el seu propi aprenentatge per a assolir un repte que se'ls proposa, i consensuar els criteris per els que avaluaran els seus propis resultats mitjançant rúbriques. L'activitat inclou aspectes artístics, TIC i matemàtics, i segueix un esquema similar al de les WebQuest. Els resultats de l'activitat es presenten juntament amb una enquesta realitzada ent...

  19. Architektur als Vermittlung

    OpenAIRE

    Ott, Konrad

    2016-01-01

    Mit Anbruch der Moderne hat sich die Architektur bewußt von den Stilen vorangegangener Epochen losgesagt und sich fortan als Ausdruck einer neuen Kultur, eines neuen Zeitgeistes legitimiert. Der Philosoph Konrad Ott setzt sich mit dem Spannungsfeld zwischen den humanistischen und ästhetischen Ansprüchen der modernen Architektur, wie sie etwa von LeCorbusier formuliert worden sind, und der Realität, die sich etwa in der "Behältnis-Architektur" der Großstädte zeigt, auseinander. Die kritische T...

  20. Salvar al planeta

    OpenAIRE

    Thomas Sancton

    2015-01-01

    El desastre de Exxon Valdez en Canadá (1989)en que derramaron 262 mil barriles de petróleo en las aguas de Alaska cambió la conciencia de los norteamericanos para bien. Comienzan a preocuparse, les gusta ser ecologistas. Se espera que no sea moda o novelería y que asuman el liderazgo para salvar al planeta, pues la deforestación, el incremento de la población, la quema de combustibles fósiles, el calentamiento global, el agujero de ozono sobre la Antártida dejan intuir que la Tierra está en g...

  1. Del Pasadismo al Futurismo

    OpenAIRE

    Agudo-Martínez, M. J.

    2003-01-01

    Uno de los habituales prejuicios a la hora de abordar el análisis del movimiento futurista, al igual que sucede con el constructivismo, es la consideración del contexto político en el que se desarrollaron ambas vanguardias. Sin embargo, y dejando a un lado un enfoque del arte con finalidad política de signo diverso, habría que insistir en el hecho de que posiblemente sean tanto el futurismo italiano como el constructivismo ruso, los movimientos que con mayor entusiasmo se manifestaron, en un ...

  2. Synthesizing (ZrAl3 + AlN)/Mg-Al composites by a 'matrix exchange' method

    Science.gov (United States)

    Gao, Tong; Li, Zengqiang; Hu, Kaiqi; Han, Mengxia; Liu, Xiangfa

    2018-06-01

    A method named 'matrix exchange' to synthesize ZrAl3 and AlN reinforced Mg-Al composite was developed in this paper. By inserting Al-10ZrN master alloy into Mg matrix and reheating the cooled ingot to 550 °C, Al and Mg atoms diffuse to the opposite side. As a result, liquid melt occurs once the interface areas reach to proper compositions. Then dissolved Al atoms react with ZrN, leading to the in-situ formation of ZrAl3 and AlN particles, while the Al matrix is finally replaced by Mg. This study provides a new insight for preparing Mg composites.

  3. Appiah-Adjei et al

    African Journals Online (AJOL)

    PUBLICATIONS1

    ing, sale of automobile spare parts, and metal fabrication. Some of these activities generate huge ... Keywords: Groundwater quality, pollution, waste disposal, Suame, Ghana ... of fertilizers (Chen et al., 2007; Parris, 2011;. Shen et al., 2011), ...

  4. AL-USRCRN Station Information

    Data.gov (United States)

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

  5. Derivados vinculados al seguro.

    Directory of Open Access Journals (Sweden)

    De Paz Cobo, Sonia

    2003-01-01

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

  6. Bukti Kebenaran Al-quran

    OpenAIRE

    Aliyah, Sri

    2015-01-01

    Al Quran is the greatest miracles of Muhammad SAW as the direction of humankind in order to reach eternal happiness. Scientific evidences show that Al Quran has the truth massages, although it was released far before the finding of modern sciences. The researches continue to study the truth of Al Quran an it revealed the historical fact.

  7. Extracción de señal y predicción en series turísticas

    Directory of Open Access Journals (Sweden)

    José Mondéjar Jiménez

    2007-01-01

    Full Text Available En los últimos años existe un creciente interés en materia de investigación turística, en un sector dinámico y de comportamiento especialmente complejo. En este escenario resulta de especial dificultad el manejo de las series temporales disponibles. La extracción de señal relevante en las series así como la realización de predicciones del comportamiento futuro de las cifras turísticas, cobran una especial importancia. En este trabajo se pretende realizar una comparación entre los métodos tradicionales y bayesianos de extracción de señal, de forma que el análisis empírico se aplica a las series turísticas más representativas de todas las provincias de la comunidad autónoma de Castilla-La Mancha. Los trabajos más frecuentes en la materia han abordado un análisis de estas series temporales a nivel internacional, nacional o regional; por ello, al descender a un nivel de desagregación provincial, los datos muestran mayores fluctuaciones y patrones de comportamiento y, por consiguiente, su modelización y predicción a futuro se hace más compleja.

  8. Mortalidad en recién nacidos de extremo bajo peso al nacer en la unidad de neonatología del Hospital Nacional Cayetano Heredia entre enero 2000 y diciembre 2004.: January 2000 to December 2004

    Directory of Open Access Journals (Sweden)

    Pablo Lohmann Gandini-Billinghurst

    2006-07-01

    Full Text Available Objetivos: Identificar los factores demográficos y clínicos más frecuentes en recién nacidos con peso menor a 1 000g al nacimiento (extremo bajo peso fallecidos en la unidad de neonatología del Hospital Nacional Cayetano Heredia. Material y métodos: El estudio diseñado es una serie de casos. Se evaluaron las epicrisis y la base de datos NEOCOSUR de los pacientes con estas características, fallecidos durante la hospitalización, de enero 2000 a diciembre 2004. Resultados: Se encontraron 99 pacientes, con registros completos en 87 de ellos (88% de la muestra. La mortalidad en esta población fluctuó entre 70 y 85%, siendo las siguientes condiciones clínicas más frecuentes: control prenatal inadecuado, edad gestacional menor a 27 semanas, uso de corticoides prenatales, empleo de surfactante, enfermedad de membrana hialina-síndrome de distrés respiratorio y hemorragia intraventricular. Conclusiones: Los cuidados prenatales, el uso de corticoides prenatales y surfactante son factores modificables que tendrían impacto en la mortalidad. Síndrome de Distrés Respiratorio-membrana hialina, sepsis y hemorragia intraventricular, constituyen las entidades de morbilidad más frecuentes. El alcance de este estudio permite formular estas hipótesis. La evaluación de las mismas requiere estudios tipo observacionales y analíticos posteriores. (Rev Med Hered 2006;17:141-147.

  9. Salvar al planeta

    Directory of Open Access Journals (Sweden)

    Thomas Sancton

    2015-01-01

    Full Text Available El desastre de Exxon Valdez en Canadá (1989en que derramaron 262 mil barriles de petróleo en las aguas de Alaska cambió la conciencia de los norteamericanos para bien. Comienzan a preocuparse, les gusta ser ecologistas. Se espera que no sea moda o novelería y que asuman el liderazgo para salvar al planeta, pues la deforestación, el incremento de la población, la quema de combustibles fósiles, el calentamiento global, el agujero de ozono sobre la Antártida dejan intuir que la Tierra está en grave peligro. Se recomienda entonces optar por un desarrollo sustentable.

  10. COMENTARIO AL CASO PINOCHET

    Directory of Open Access Journals (Sweden)

    Alberto Contreras Clunes

    2002-01-01

    Full Text Available El fallo en el caso Pinochet tiene distintas formas de ser analizado. De partida, desde un punto de vista político, también constitucional, del derecho penal. Sin embargo, nos abocaremos al estudio desde el punto de vista procesal, en especial a lo referido al Debido Proceso. Para ello se analizará los presupuestos, la solución dada por la Excma. Corte Suprema y las consecuencias del mismo. Además, se criticará la solución dada, desde la óptica de las garantías procesales del imputado, contenidas en el nuevo proceso penal y lo dispuesto en la Constitución y la Convención Americana de Derechos Humanos. Finalmente, se argumentará en favor de una interpretación finalista y armónica de la Constitución y los tratados internacionales de derechos humanos.The verdict of the Pinochet Case has different ways of being analyzed: from the political, the constitutional, and the penal law points of view. However, we will approach this study from the legal point of view, especially to that referred to as the Proper Process. To do this, the budgets, the solution given by the Most Excellent Supreme Court, and its consequences will be analyzed. Furthermore, the given solution will be criticized from the point of view of the legal guarantees of the accused contained in the new penal process and what is contained in the Constitution and in the American Convention of Human Rights. In conclusion, we will argue in favor of a final and harmonious interpretation of the Constitution and the international agreement of human rights.

  11. Nuevas aportaciones a la búsqueda de genes de predisposición al cáncer de mama hereditario

    OpenAIRE

    Fernández García, Daniel

    2014-01-01

    [ES] El cáncer de mama es el más frecuente en mujeres y la principal causa de muerte tanto en países desarrollados como en países en desarrollo, representando un 23 % del total de nuevos casos de cáncer (se estima en 1 millón de nuevos casos cada año) y un 14 % del total de muertes en 2008 (Jemal et al. 2011). Aproximadamente un 5-10% de los cánceres de mama tienen una predisposición genética debido a la presencia de mutaciones germinales de genes de susceptibilidad, de forma que el aumen...

  12. Factores asociados al destete precoz

    Directory of Open Access Journals (Sweden)

    Georgina Peraza Roque

    1999-01-01

    Full Text Available Se realiza un estudio descriptivo y transversal a 91 niños nacidos entre el 1ro de enero y el 31 de diciembre de 1993, en los 14 consultorios del médico de la familia, pertenecientes a un Grupo Básico de trabajo, del Policlínico Docente "Antonio Maceo" del municipio Cerro, en la Ciudad de La Habana. Se analizaron factores biopsicosociales relacionados con la madre y con el niño. Se confeccionó la base de datos mediante el programa Foxplus, realizándose comparaciones de media y se empleó el método comparativo de los porcentajes. Predominó el destete precoz en niños nacidos con bajo peso, hijos de madres estudiantes o amas de casa, con nivel de información sobre la lactancia materna bajo; la hipogalactia y "el niño que no se llena" fueron las causas más frecuentes de abandono.A descriptive and cross-sectional study of 91 children that were born between January, 1991, and December, 1993, at 14 family physicians´ offices corresponding to the Basic Working Group of the "Antonio Maceo" Teaching Polyclinic in Cerro municipality, Havana City, was conducted. Biopsychosocial factors related to the mother and the child were analyzed. The data base was made by the Foxplus program. Mean comparisons were also made and the comparative method of percentages was used. Early weaning predominated in children with low birth weight, and in children of student mothers or housewives with low level of information about lactation. The commonest causes for giving up breast feeding were hypogalactia and the fact that "the child is not fully satisfied".

  13. Idaaratu al Wahdah al Namthiyah li at Tathwiri al Tarbiyah al Islamiyah

    Directory of Open Access Journals (Sweden)

    Ahmad Danusiri

    2016-04-01

    Full Text Available Islam, through the Quran, proclaims that its mission includes the teachings to the whole universe, Everything in the universe is maintained by Islam, and none of the symptoms are ignored. The revelations also include the traditions of the Prophet that are authentic (shahih and good (hasan in quality. Both the Quran and maqbulah hadiths are accepted by Muslims on the basis of faith. When some experts of UIN Walisongo from various disciplines try to understand the sacred words of these two resources, their understanding continues, reaching the paradigm of the unity of science which essentially unites the normative, social, and natural sciences. The effect of this paradigm has brought up an issue for the author. Is there any hadiths or Prophetic traditions that can be used as a grand theory in the management disciplines of Islamic education.To address this issue, the authors conducted a literature research with the title Development of Islamic Education Management Module. Sources of data were focused on nine books of Hadiths : Sahih al-Bukhari, Sahih al-Muslim, Sunan Abu Dawud, Sunan at-Turmudzi, Sunan an-Nasai, Sunan Ibn Majah, Sunan ad-Darimi, Muwatta Malik, and Musnad Imam Ahmad bin Hanbal in the form of digital data Lidwa Reader Software Book 9 Imam Hadith. The findings of the study stated that the meaning of the word Rabb includes: creating, nurturing, maintaining, teaching, educating, and organizing. Thus, in an academic term, the word Rabb implies a manager or leader. Meanwhile, in the concept of comprehensive manager it contains at least 14 nomenclature denotations: planning, responsibility, organization, coordination, system of employee payroll, learning, resources, humanity, principle of making it easier for the manager to the employee, motivated to achieve optimal performance, preventing unproductivity, education participation, institutional costs, monitoring, and evaluation system. Each nomenclature has numerous hadiths that could serve

  14. Factores biológicos asociados al retardo primario del lenguaje en niños menores de cinco años

    Directory of Open Access Journals (Sweden)

    Ileana Valdivia Álvarez

    Full Text Available Introducción: el retardo primario del lenguaje está presente entre 6 y 10 % de niños menores de 6 años, y constituye un frecuente motivo de consulta pediátrica, sobre el que se puede actuar, una vez conocidos los factores de riesgo. Objetivos: identificar factores biológicos o personales asociados al retardo primario del lenguaje, en niños entre 18 meses y 5 años de edad. Metodos: estudio analítico caso-control, en niños entre 18 meses y 5 años, atendidos en la Consulta de Neuropediatría del Hospital Pediátrico "Juan Manuel Márquez", por retardo del lenguaje, entre enero de 2010 y julio de 2011, en relación con un grupo control de niños sanos. Resultados: el retardo primario del lenguaje es más frecuente en varones a razón de 1:4,6, que son diagnosticados a una edad media de 3,05 (+0,95 años, con antecedentes familiares de retardo de lenguaje (p= 0,001 y enfermedades neuropsiquiátricas (p= 0,012. Presentaron más antecedentes de malformaciones, traumas y distermia al nacer (p= 0,007, y también mayor retardo en el desarrollo de la lateralidad (p= 0,025. Conclusiones: se consideran factores de riesgo para el retardo primario del lenguaje, el género masculino, los antecedentes familiares de trastornos del lenguaje y enfermedades neuropsiquiátricas, la lateralidad demorada y los eventos posnatales patológicos.

  15. Vulnerabilidad al estrés en pacientes con enfermedad ulcerosa péptica

    Directory of Open Access Journals (Sweden)

    David Pérez Núñez

    Full Text Available Introducción: el estrés es considerado una reacción o respuesta no específica del organismo o cualquier cambio engendrado en este por el impacto de acontecimientos importantes. Método: se realizó una investigación descriptiva, correlacional, de corte transversal y cuantitativa, con un diseño no experimental con el. Objetivo: de evaluar la vulnerabilidad al estrés en una muestra seleccionada de manera intencional de 70 sujetos, todos diagnosticados con enfermedad ulcerosa péptica, por endoscopias recientes (menos de seis meses, que asistieron a la consulta de Gastroenterología del Policlínico "Efraín Mayor" del municipio Cotorro, en el periodo de enero a marzo de 2013. Resultados: se encontró que el 85,7% de la muestra son no vulnerables al estrés, predominó el sexo femenino en el estudio, siendo el tabaco y el café los hábitos tóxicos más frecuentes en la población estudiada. La ansiedad como rasgo y como estado, predominaron a un nivel bajo y medio. Conclusiones: se recomendó repetir estudio similar en otra área de salud del municipio Cotorro y otros estudios con variables: Estilos de vida, afrontamientos y apoyo social, en su relación a la vulnerabilidad al estrés, además de realizar estrategia de intervención educativa en los pacientes estudiados.

  16. Malamih al-Ashwat al-'Arabiyyah wa Makharijaha

    Directory of Open Access Journals (Sweden)

    Amrah Muhammad Kasim

    2015-12-01

    Full Text Available This writing discusses on al-ashwat al-‘arabiyyah that is known with “phonetic” term. It talks and interprets makharij al-huruf or place for producing sounds and also processing production of sounds by parts of mouth in Arabic language. The problems of sounds and its systems in Arabic language have been conducted by the scholars of al-ashwat al-‘arabiyyah attractively, neatly, and detail and gotten ahead the phonetic western scholars. Part of their analysis results formulate the study about al-ashwat al-sakinah (al-Shamit is known with vocal and consonant sounds in research questions shawait – shawamit. Ibnu Jinni has formulated “harakat”(wowel in Arabic language and dimension of letter  mad and liyn on alif  letter - waw - ya’ (ا و ي, from these letters create  harakat fathah, dammah, and kasrah. Moreover, in this writing also exist the description of hija’i letters and its makhraj that are correct from parts of mouth and the unity of coordinative sounds that produce sounds in morphemes arrangement, in one word that produces meaning. The result of phonological study has divided al-ashwat to be kinds of sound like the pronounced sounds, produced sounds from mouth, and heard sound.

  17. Morton et al. Reply

    Science.gov (United States)

    Morton, Douglas C.; Nagol, Jyoteshwar; Carabajal, Claudia C.; Rosette, Jacqueline; Palace, Michael; Cook, Bruce D.; Vermote, Eric F.; Harding, David J.; North, Peter R. J.

    2016-01-01

    Multiple mechanisms could lead to up-regulation of dry-season photosynthesis in Amazon forests, including canopy phenology and illumination geometry. We specifically tested two mechanisms for phenology-driven changes in Amazon forests during dry-season months, and the combined evidence from passive optical and lidar satellite data was incompatible with large net changes in canopy leaf area or leaf reflectance suggested by previous studies. We therefore hypothesized that seasonal changes in the fraction of sunlit and shaded canopies, one aspect of bidirectional reflectance effects in Moderate Resolution Imaging Spectroradiometer (MODIS) data, could alter light availability for dry-season photosynthesis and the photosynthetic capacity of Amazon forests without large net changes in canopy composition. Subsequent work supports the hypothesis that seasonal changes in illumination geometry and diffuse light regulate light saturation in Amazon forests. These studies clarify the physical mechanisms that govern light availability in Amazon forests from seasonal variability in direct and diffuse illumination. Previously, in the debate over light limitation of Amazon forest productivity, seasonal changes in the distribution of light within complex Amazon forest canopies were confounded with dry-season increases in total incoming photosynthetically active radiation. In the accompanying Comment, Saleska et al. do not fully account for this confounding effect of forest structure on photosynthetic capacity.

  18. Alternativen als Programm

    Directory of Open Access Journals (Sweden)

    Paulina Dobroć

    2018-03-01

    Full Text Available Der vorliegende Artikel soll einen Beitrag zu theoretischen Überlegungen einer Technikfolgenabschätzung (TA der Alternativen leisten. Ausgehend von der Annahme, dass TA seit ihrer Entstehung den Anspruch auf die Entwicklung von (technischen Alternativen erhoben hat, wird hier der Versuch unternommen, die Rolle der TA im Rahmen aktueller Innovationsprozesse zu reflektieren und (neu zu definieren. Dies scheint vor allem im Hinblick auf aktuelle gesellschaftliche Herausforderungen notwendig. Zu diesem Zweck wird eine Grundannahme Lothar Hacks über das Verhältnis von Gesellschaft und Technik herangezogen. Seine Annahme besagt, dass die kontinuierliche Überführung von sozialen Problemen und Leitbildern in enge technische Lösungsansätze in hochindustrialisierten Ländern dominant und Teil der aktuellen gesellschaftlichen Probleme ist. Diese These wird im vorliegenden Artikel im Hinblick auf einen Perspektivenwechsel als Ausgangspunkt eines zukünftigen Forschungsprogramms der TA fruchtbar gemacht. Hierbei bildet das Denken in Alternativen von gesellschaftlichen Zukünften den zentralen Fokus.

  19. Notas clínicas: un caso de espiroquetosis bronquial que cede al “Neostibosan "

    Directory of Open Access Journals (Sweden)

    Alfonso Peláez Mejía

    1932-09-01

    Full Text Available No son extraños a nuestra Patología Tropical los casos de espiroquetosis bronquial (bronquitis sangrienta, y ya desde 1926 el doctor Rafael Martín Rodríguez inauguró su tesis de doctorado Con algunas observaciones sobre la enfermedad. Es difícil, evidentemente, ennuestro medio, diagnosticarla dada su asociación, muy frecuente, con la tuberculosis y su rareza. Cuando llegamos al Servicio de Clínica interna del profesor Miguel Canales, en calidad de internos, en marzo del año en curso, encontramos en la cama número 2 una enferma entrada en el hospital desde octubre de 1931. Nos llamó la atención la singularidad de su sintomatología que hacía difícil orientar el diagnóstico a determinada afección, máxime cuando sus mayores dolencias estaban del lado del aparato digestivo.

  20. Undulators at the ALS

    International Nuclear Information System (INIS)

    Hoyer, E.; Akre, J.; Chin, J.

    1994-07-01

    At Lawrence Berkeley Laboratory's (LBL) Advanced Light Source (ALS), three 4.6 m long undulators have been completed, tested and installed. A fourth is under construction. The completed undulators include two 5.0 cm period length, 89 period devices (U5.0s) which achieve a 0.85 T effective field at a 14 mm minimum gap and a 8.0 cm period length, 55 period device (U8.0) that reaches a 1.2 T effective field at a 14 mm minimum gap. The undulator under construction is a 10.0 cm period length, 43 period device (U10.0) that is designed to achieve 0.98 T at a 23 mm gap. Undulator magnetic gap variation (rms) is within 25 microns over the periodic structure length. Reproducibility of the adjustable magnetic gap has been measured to be within +/- 5 microns. Gap adjusting range is from 14 mm to 210 mm, which can be scanned in one minute. The 5.1 m long vacuum chambers are flat in the vertical direction to within 0.74 mm and straight in the horizontal direction to within 0.08 mm over the 4.6 m magnetic structure sections. Vacuum chamber base pressures after UHV beam conditioning are. in the mid 10 -11 Torr range and storage ring operating pressures with full current are in the low 10 -10 Torr range. Measurements show that the uncorrelated magnetic field errors are 0.23%, and 0.20% for the two U5.Os and the U8.0 respectively and that the field integrals are small over the 1 cm by 6 cm beam aperture. Device description, fabrication, and measurements are presented

  1. Estudio transcriptómico de los mecanismos implicados en la tolerancia inducida por el curado al daño de frío y por el etileno al colapso de la corteza en los frutos cítricos

    OpenAIRE

    Establés Ortiz, Beatriz A.

    2008-01-01

    Muchos productos hortofrutícolas desarrollan 'daños de frío' durante la conservación a temperaturas inferiores a 12-15 ºC. El tratamiento de 'curado' (3 días 37 ºC) previene la aparición de esta alteración en los frutos cítricos cuando se conservan a 2 ºC. En la mandarina 'Fortune', muy susceptible al frío, los daños se manifiestan como un picado y áreas de color pardo en la parte más externa de la corteza (flavedo). Otra de las alteraciones frecuentes en la postcosecha de los frutos cítricos...

  2. Diffusion-induced quadrupole relaxation of 27Al nuclei in dilute Al-Ti, Al-Cr, Al-Mn, and Al-Cu alloys at high temperatures

    International Nuclear Information System (INIS)

    Bottyan, L.; Beke, D.L.; Tompa, K.

    1983-01-01

    The temperature dependence of the laboratory frame spin-lattice relaxation time of 27 Al nuclei is measured in 5N Al and in dilute Al-Ti, Al-Cr, Al-Mn, and Al-Cu alloys at 5.7 and 9.7 MHz resonance frequencies. The relaxation in pure aluminium is found to be purely due to the conduction electrons. An excess T 1 -relaxation contribution is detected in all Al-3d alloys investigated above 670 K. The excess relaxation rate is proportional to the impurity content and the temperature dependence of the excess contribution is of Arrhenius-type with an activation energy of (1.3 +- 0.3) eV for all of the investigated alloys. The relaxation contribution is found to be quadrupolar in origin and is caused by the relative diffusional jumps of solute atoms and Al atoms relatively far from the impurity. (author)

  3. Notificación de accidentes y enfermedades laborales al Ministerio de Trabajo. Perú 2010-2014

    Directory of Open Access Journals (Sweden)

    Christian R Mejia

    Full Text Available Con el objetivo de determinar las tendencias de los accidentes y enfermedades laborales notificadas al Ministerio de Trabajo del Perú, se realizó un estudio descriptivo de datos secundarios, con los reportes extraídos de los boletines mensuales desde septiembre de 2010 a diciembre de 2014. Se notificaron a nivel nacional 54 596 accidentes laborales no mortales, las tasas de los accidentes laborales no mortales por millón de habitantes aumentaron en el período 2011- 2013 (296,5 el 2011, 955,9 el 2012 y 1176,3 el 2013, disminuyendo en el 2014 (878,9. Hubieron 674 accidentes mortales, cuyas tasas se incrementaron entre el 2011-2012 y se redujeron entre el 2013-2014. Se reportaron 346 enfermedades laborales, las más frecuentes fueron los casos de hipoacusia (77, enfermedades por posturas inadecuadas (57 y dermatitis alérgica (44; los reportes se redujeron de 6,9 en el 2011 a 2,3 en el 2014. Los reportes de enfermedades laborales fueron disminuyendo, lo que podría indicar una subnotificación importante

  4. Análisis del Cambio en un Problema de Adicción al Alcohol. Estudio de Caso

    Directory of Open Access Journals (Sweden)

    Gala Almazán Antón

    2012-01-01

    Full Text Available Se analiza el caso de C., una mujer que acude a consulta por problemas con el consumo de alcohol y un bajo estado de ánimo. El objetivo de este artículo es exponer un caso abordado con éxito desde la terapia de conducta justificando los progresos obtenidos a través de la operativización de las medidas de cambio. Los resultados obtenidos muestran una tendencia general positiva en las medidas de cambio establecidas (consumo de alcohol, interacciones sociales, estado de ánimo, nivel de actividad, dificultades para dormir, etc., a pesar de las dificultades que presentaba el caso por ser varias las áreas problemáticas asociadas y por la reticencia al cambio de la cliente. Estos dos factores están muy presentes en este tipo de problemática y los clínicos deben permanecer en alerta ante posibles caídas o recaídas, tan frecuentes en los casos de abuso o dependencia al alcohol.

  5. Deformation mechanisms of nanotwinned Al

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Xinghang [Texas A & M Univ., College Station, TX (United States)

    2016-11-10

    The objective of this project is to investigate the role of different types of layer interfaces on the formation of high density stacking fault (SF) in Al in Al/fcc multilayers, and understand the corresponding deformation mechanisms of the films. Stacking faults or twins can be intentionally introduced (via growth) into certain fcc metals with low stacking fault energy (such as Cu, Ag and 330 stainless steels) to achieve high strength, high ductility, superior thermal stability and good electrical conductivity. However it is still a major challenge to synthesize these types of defects into metals with high stacking fault energy, such as Al. Although deformation twins have been observed in some nanocrystalline Al powders by low temperature, high strain rate cryomilling or in Al at the edge of crack tip or indentation (with the assistance of high stress intensity factor), these deformation techniques typically introduce twins sporadically and the control of deformation twin density in Al is still not feasible. This project is designed to test the following hypotheses: (1) Certain type of layer interfaces may assist the formation of SF in Al, (2) Al with high density SF may have deformation mechanisms drastically different from those of coarse-grained Al and nanotwinned Cu. To test these hypotheses, we have performed the following tasks: (i) Investigate the influence of layer interfaces, stresses and deposition parameters on the formation and density of SF in Al. (ii) Understand the role of SF on the deformation behavior of Al. In situ nanoindentation experiments will be performed to probe deformation mechanisms in Al. The major findings related to the formation mechanism of twins and mechanical behavior of nanotwinned metals include the followings: 1) Our studies show that nanotwins can be introduced into metals with high stacking fault energy, in drastic contrast to the general anticipation. 2) We show two strategies that can effectively introduce growth twins in

  6. Deformation mechanisms of nanotwinned Al

    International Nuclear Information System (INIS)

    Zhang, Xinghang

    2016-01-01

    The objective of this project is to investigate the role of different types of layer interfaces on the formation of high density stacking fault (SF) in Al in Al/fcc multilayers, and understand the corresponding deformation mechanisms of the films. Stacking faults or twins can be intentionally introduced (via growth) into certain fcc metals with low stacking fault energy (such as Cu, Ag and 330 stainless steels) to achieve high strength, high ductility, superior thermal stability and good electrical conductivity. However it is still a major challenge to synthesize these types of defects into metals with high stacking fault energy, such as Al. Although deformation twins have been observed in some nanocrystalline Al powders by low temperature, high strain rate cryomilling or in Al at the edge of crack tip or indentation (with the assistance of high stress intensity factor), these deformation techniques typically introduce twins sporadically and the control of deformation twin density in Al is still not feasible. This project is designed to test the following hypotheses: (1) Certain type of layer interfaces may assist the formation of SF in Al, (2) Al with high density SF may have deformation mechanisms drastically different from those of coarse-grained Al and nanotwinned Cu. To test these hypotheses, we have performed the following tasks: (i) Investigate the influence of layer interfaces, stresses and deposition parameters on the formation and density of SF in Al. (ii) Understand the role of SF on the deformation behavior of Al. In situ nanoindentation experiments will be performed to probe deformation mechanisms in Al. The major findings related to the formation mechanism of twins and mechanical behavior of nanotwinned metals include the followings: 1) Our studies show that nanotwins can be introduced into metals with high stacking fault energy, in drastic contrast to the general anticipation. 2) We show two strategies that can effectively introduce growth twins in

  7. SANANDO AL SANADOR

    Directory of Open Access Journals (Sweden)

    Juan Pablo Acuña, Dr.

    2017-09-01

    Full Text Available RESUMEN: La dependencia o adicción a sustancias de uso profesional es un problema que puede afectar gravemente a médicos de diferentes especialidades. En la anestesiología hay mayor riesgo de dependencia a opioides e hipnóticos que en otras especialidades y puede llegar a afectar al 1% de los médicos anestesiólogos.La fisiopatología del trastorno por uso de sustancias tiene hechos comunes para diferentes drogas. Interactúan la vulnerabilidad genética y factores psicosociales como predisponentes y los efectos psicobiológicos de la sustancia como factor gatillante. En el caso de los anestesiólogos, la sustancia se encuentra en el lugar de trabajo y por lo tanto, el individuo está constantemente expuesto.Una disfunción previa del sistema de recompensa en el circuito mesocorticolímbico o causada por la exposición a la sustancia adictiva es la piedra central de la neurobiología de las adicciones. Los opioides, anfetaminas, canabinoides, alcohol y nicotina, son algunas de las sustancias exógenas que activan el circuito y causan inicialmente un efecto hedónico que reforzará la conducta por repetir la experiencia. Con el tiempo la interacción con la droga será para evitar los síntomas de abstinencia.Dada la exposición laboral de los anestesiólogos, es necesario prevenir, detectar y tratar precozmente a quienes están abusando de sustancias durante su ejercicio profesional.Por las características de estos fármacos, aspectos psicológicos especiales de los médicos y el contexto laboral se hace necesario un tratamiento especializado y en anestesiólogos la reinserción laboral debe ser un proceso controlado, gradual y con un seguimiento prolongado. SUMMARY: Prescription drugs dependence seriously impairs doctors from differents fields of medicine. Anesthesiology has greater risk than other specialties to opioids and hypnotics dependence, with prevalence up to 1%.Substances use disorder has common mechanisms of disease regardless

  8. Reacciones adversas al tratamiento antirretroviral de gran actividad inicial en el hospital Santa Rosa – Piura.

    Directory of Open Access Journals (Sweden)

    Jiovany Jahn Carlos Saldaña-Gastulo

    2011-01-01

    Full Text Available Objetivo: Determinar la incidencia y factores asociados a reacciones adversas medicamentosas (RAM al TARGA inicial durante el periodo enero 2006 – diciembre 2007 en el Hospital de Apoyo Santa Rosa-Piura. Diseño: Se realizó un estudio analítico de cohorte retrospectiva. Lugar: Hospital de Apoyo Santa Rosa-Piura. Participantes: 107 historias clínicas de pacientes VIH positivos mayores de 18 años que recibieron TARGA y fueron atendidos durante este periodo en el consultorio de infectología. Intervenciones: Se analizaron retrospectivamente las historias clínicas que fueron pertinentes para la recolección de datos. Principales medidas de resultado: Analisis Univariado, Bivariado (t de Student, y Riesgo Relativo, multivariado (Regresión logística con 95% de confianza (p<0.05. Resultados: En 107 pacientes se encontró una incidencia acumulada de 66,35% de RAM al TARGA inicial. Las RAM experimentadas con mayor frecuencia fueron anemia (35,2%, rash (16,9% y vómitos (9,9%. Se encontró diferencias significativas entre la media de edad y la presencia de RAM con la prueba de t de student (p < 0.05 Conclusiones: Existe una alta incidenica de RAM en pacientes incluidos en TARGA, siendo la más frecuente la anemia en 25 pacientes (35,2%. La media de edad es mayor en pacientes con RAM. Palabras Claves: VIH/SIDA, Terapia de alta actividad antirretroviral, Reacciones adversas a medicamentos.

  9. 117 - 122 Omoniyi et al

    African Journals Online (AJOL)

    User

    Bayero Journal of Pure and Applied Sciences, 8(2): 117 – 122. Received: ... FOLLOWING MILD EXPOSURE. Omoniyi ... People who work with materials containing mere traces .... obscured physical effect in the animal model (Omoniyi et al.

  10. 150 - 159_Salisu et al.

    African Journals Online (AJOL)

    User

    of interaction occurring in this natural system (Dube et al.,2000). Many soils ... minerals including gold, copper, zinc etc. The Zamfara ... contain unusually problematic concentration of lead and other ..... Copper (Cu) is an essential micronutrient ...

  11. 142 - 149_Safiyanu et al.,

    African Journals Online (AJOL)

    User

    insecticides producing industries whose daily challenge is minimization of malaria burden across the globe. Larvae of ... emerge and currently represents the major threat to ..... eastern Thailand (Pimsamurna et al., 2009) and resistance to ...

  12. 24 - 28_Suleiman et al.

    African Journals Online (AJOL)

    User

    larval instar. Keywords: Antlion, Construction, Density, Distribution, Hunger, Larvae, Pit. INTRODUCTION ... 1987), moisture (Gotelli 1993; Morrison 1994), and shade (scharfet al. .... Pit building was virtually the same in all three instar, and no ...

  13. Laniyan et al (1).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    Pollution of groundwater has become a major environmental problem. Anthropogenic ... drinking water comes from aquifers (Forster et al.,. 1998). Aquifers ... improvement in public health. ..... Arsenic (As): Chemical properties,. Health and ...

  14. Radiation detection with Nb/Al-AlOx/Al/Nb superconducting tunnel junctions

    International Nuclear Information System (INIS)

    Matsumura, Atsuki; Takahashi, Toru; Kurakado, Masahiko

    1992-01-01

    Superconductor radiation detectors have the possibility of 20-30 times better energy resolution than that of a high resolution Si detector. We fabricated Nb/Al-AlOx/Al/Nb superconducting tunnel junctions with low leakage current. X rays were detected with large area junctions of 178x178 μm 2 . High energy resolution of 160 eV for 5.9 keV was obtained. We also fabricated series connected junctions which covers a rather large area of 4x4 mm 2 . α particles injected into the rear substrate were detected using nonthermal phonons induced by the radiations in the substrate. (author)

  15. Indicadores del bajo peso al nacer en el área de salud del Policlínico Docente "José Martí Pérez" durante un quinquenio

    Directory of Open Access Journals (Sweden)

    Nolvis Argota Matos

    2013-07-01

    Full Text Available Se realizó un estudio descriptivo de los 252 nacidos con bajo peso pertenecientes al área de salud del Policlínico Docente "José Martí Pérez" de Santiago de Cuba, durante el quinquenio 2007-2011, a fin de caracterizarles y determinar cómo se manifestó el bajo peso al nacer en ellos. Se incluyeron las variables: índices de bajo peso al nacer, peso al nacer, distribución y fallecidos según sus formas clínicas, mortalidad del nacido con peso menor de 2 000 g y su supervivencia, causa del nacimiento pretérmino e indicaciones médicas. En la serie el índice de bajo peso aumentó de 6,9 en 2007 a 7,1 en el 2011, predominó como forma clínica el crecimiento intrauterino retardado, la preeclampsia grave fue el diagnóstico médico más frecuente y el mayor número de fallecidos correspondió al grupo con peso menor de 2 000 g. De igual manera, se logró un incremento en la supervivencia de estos recién nacidos, en directa relación con la mejoría ostensible de los indicadores en el período.

  16. Al clamor de les vuvuzeles

    Directory of Open Access Journals (Sweden)

    Javier Olivera Betrán

    2010-09-01

    Full Text Available El Mundial de Futbol de Sud-àfrica ha situat l’Àfrica al mapa mundial i ha mostrat al món el triomf de l’estil de futbol d’Espanya basat en la col·lectivitat, l’esperit d’equip, la humilitat, la cohesió interna i el joc bonic. L’organització africana, seriosa i eficaç, ha sabut mobilitzar i il·lusionar la població del país que ha participat en el mundial des de l’orgull de ser africà, amb l’esperit alegre, festiu i també reivindicatiu de la gent de l’Àfrica. Aquest esdeveniment suposa el llançament de la marca “Sud-àfrica” al món amb un avís clar d’optar a l’organització d’uns primers Jocs Olímpics a Àfrica (potser els de 2020. S’obre una finestra d’esperança al segle xxi per al continent perdut de la mà de l’esport espectacle tan universal, massiu, emocional i mercantil que també es juga a la canxa de la política i de l’economia.

  17. Combustion synthesis of AlB2-Al2O3 composite powders with AlB2 nanowire structures

    Science.gov (United States)

    Yang, Pan; Xiao, Guoqing; Ding, Donghai; Ren, Yun; Yang, Shoulei; Lv, Lihua; Hou, Xing

    2018-05-01

    Using of Al and B2O3 powders as starting materials, and Mg-Al alloy as additives, AlB2-Al2O3 composite powders with AlB2 nanowire structures were successfully fabricated via combustion synthesis method in Ar atmosphere at a pressure of 1.5 MPa. The effect of different amount of Mg-Al alloy on the phase compositions and morphology of the combustion products was investigated. The results revealed that AlB2 and Al2O3 increased, whereas Al decreased with the content of Mg-Al alloy increasing. The impurities MgAl2O4 and AlB12 would exist in the sample with adding of 18 wt% Mg-Al alloy. Interestingly, FESEM/TEM/EDS results showed that AlB2 nanowires were observed in the products when the content of Mg-Al alloy is 6 wt% and 12 wt%. The more AlB2 nanowires can be found as the content of Mg-Al alloy increased. And the yield of AlB2 nanowires with the diameter of about 200 nanometers (nm) and the length up to several tens of micrometers (μm) in the combustion product is highest when the content of Mg-Al alloy is 12 wt%. The vapor, such as Mg-Al (g), B2O2 (g), AlO (g) and Al2O (g), produced during the process of combustion synthesis, reacted with each other to yield AlB2 nanowires by vapor-solid (VS) mechanism and the corresponding model was also proposed.

  18. AL ITTIJAHAT AL MUNHARIFAH FI AT TAFSIR LI BADLI ASHAB AL MADZAHIB AL NAHWIYYAH WA BADL MAN YAJHALUNA QAWAID AL LUGHAH AL ARABIYYAH FI NADHAR MUHAMMAD HUSAIN AL DZAHABIY

    Directory of Open Access Journals (Sweden)

    Misbakhudin Misbakhudin

    2017-06-01

    Full Text Available One of the most precious achievement in qur’anic studies was the book of Al-Ittijâhât al-Munharifah fî al-Tafsîr: Dawâfi’uha wa Daf’uha written by A great Islamic scholar, Muhammad Husein al-Dzahabî. He was succeeded in discussing several issues of corruptions of the exegesis of the holy Qur’an. This article is aimed to explain and to describe his analysis toward several corrupted linguist interpretations in their originations and such corrupted linguistic interpretations of the holy Qur’an which are ignoring Arabic structures and grammers

  19. Conjuntivitis alérgica

    Directory of Open Access Journals (Sweden)

    Alejandro Tello Hernández

    2008-07-01

    Full Text Available La conjuntivitis alérgica es una de las causas más comunesde consulta externa en oftalmología y tiene una muy altarelación con las reacciones alérgicas sistémicas. Lafisiopatología de las reacciones de hipersensibilidad noshace entender los cuadros clínicos característicos de estapatología y sus diferentes grados de severidad. Eldiagnostico diferencial es amplio, sin embargo hay clavesdiagnosticas que nos orientan rápidamente al diagnosticocorrecto. El tratamiento se enfoca en las medidasfarmacológicas y no farmacológicas, utilizándolas enconjunto para disminuir la recurrencia del cuadro y prevenirsecuelas visuales.

  20. PENDIDIKAN MENURUT AL-GHAZALI

    Directory of Open Access Journals (Sweden)

    Syamsul Kurniawan

    2016-12-01

    Full Text Available Education reform efforts typically begin with a conceptual perspective before implementation. Thus, developing Islamic education usually begins with a study of a figure and his educational thought. And one of the most influential figures whose thought which has Sufi religious pattern has dominated educational thinking atmosphere over the centuries since his death. The purpose of education according to al-Ghazali was to get closer to Allah. He came with a view that the most noble job is to educate: to become a teacher. Al-Ghazali advised that his students, in the learning process, aim to become scientists who could disseminate their knowledge for the sake of humanity values. Keywords: Al-Ghazali, Thought, Islamic Education.

  1. A united refinement technology for commercial pure Al by Al-10Ti and Al-Ti-C master alloys

    Energy Technology Data Exchange (ETDEWEB)

    Ma Xiaoguang [Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061 (China); Liu Xiangfa [Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061 (China)], E-mail: xfliu@sdu.edu.cn; Ding Haimin [Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061 (China)

    2009-03-05

    Because flake-like TiAl{sub 3} particles in Al-Ti-C master alloys prepared in a melt reaction method dissolve slowly when they are added into Al melt at 720 deg. C, Ti atoms cannot be released rapidly to play the assistant role of grain refinement, leading to a poor refinement efficiency of Al-Ti-C master alloys. A united refinement technology by Al-10Ti and Al-Ti-C master alloys was put forward in this paper. The rational combination of fine blocky TiAl{sub 3} particles in Al-10Ti and TiC particles in Al-Ti-C can improve the nucleation rate of {alpha}-Al. It not only improves the grain refinement efficiency of Al-Ti-C master alloys, but also reduces the consumption.

  2. A united refinement technology for commercial pure Al by Al-10Ti and Al-Ti-C master alloys

    International Nuclear Information System (INIS)

    Ma Xiaoguang; Liu Xiangfa; Ding Haimin

    2009-01-01

    Because flake-like TiAl 3 particles in Al-Ti-C master alloys prepared in a melt reaction method dissolve slowly when they are added into Al melt at 720 deg. C, Ti atoms cannot be released rapidly to play the assistant role of grain refinement, leading to a poor refinement efficiency of Al-Ti-C master alloys. A united refinement technology by Al-10Ti and Al-Ti-C master alloys was put forward in this paper. The rational combination of fine blocky TiAl 3 particles in Al-10Ti and TiC particles in Al-Ti-C can improve the nucleation rate of α-Al. It not only improves the grain refinement efficiency of Al-Ti-C master alloys, but also reduces the consumption

  3. estigma tolerable al estigma intolerable

    Directory of Open Access Journals (Sweden)

    Nelson Arteaga Botello

    2006-01-01

    cristalización pasa por dos referentes de interacción y relación social al interior del espacio escolar. El primero está constituido por parámetros de normalidad y anormalidad a partir de la localización de estigmas. El segundo se encuentra, a contrapelo de la tendencia anterior, tratando de diluir los efectos de los estigmas al señalarlos como una práctica de tipificación social intolerable o inaceptable.

  4. De la contingencia al destino

    Directory of Open Access Journals (Sweden)

    Heller, Agnes

    1991-10-01

    Full Text Available Not available.

    La modernidad no ha podido dar respuesta al problema de la contingencia histórica, El texto muestra, por medio de metáforas, que el abandono necesario de esta cuestión no significa que estemos abocados al relativismo respecto a la contingencia existencial. La contingencia existencial, individual, sigue presente en la vida de todo individuo. Se sostiene que podemos dar un destino a nuestras vidas, y ésta es la tarea principal del filósofo.

  5. Tailoring ultrafine grained and dispersion-strengthened Ti 2 AlC/TiAl ...

    Indian Academy of Sciences (India)

    In situ Ti 2 AlC/TiAl composite was fabricated by hot-pressing method via the reaction system of Ti 3 AlC 2 and Ti-Al pre-alloyed powders at low temperature of 1150 ∘ C. The composite mainly consisted of TiAl, Ti 3 Al and Ti 2 AlC phases. Fine Ti 2 AlC particles were homogeneously distributed and dispersed in the matrix.

  6. ¿COLOMBIA DEBE APOSTARLE AL SOFTWARE LIBRE, AL DE FUENTE ABIERTA O AL PROPIETARIO?

    Directory of Open Access Journals (Sweden)

    Luis Alberto Girón Murillo

    2014-06-01

    Full Text Available Es complejo para gestores y administradores conocer las implicaciones que la adopción de modelos de desarrollo de software tendría para una región. Este artículo ofrece una evaluación de las implicaciones dinámicas que para el desarrollo de software de una región tendría el apostar de forma excluyente al software libre, al software de fuente abierta y al software propietario. Se desarrolló un modelo de simulación en Vensim de la dinámica de sistemas en donde se evaluaron 3 escenarios: uno en donde se adopta de forma excluyente el software libre, uno en donde se adopta el software propietario y uno en donde se adopta el software de fuente abierta. Se ofrecen descripciones y explicaciones de los resultados que sugieren las potencialidades de cada uno de los modelos de desarrollo evaluados.

  7. AlN/Al dual protective coatings on NdFeB by DC magnetron sputtering

    Energy Technology Data Exchange (ETDEWEB)

    Li Jinlong; Mao Shoudong; Sun Kefei [Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China); Li Xiaomin [Shanghai Institute of Ceramics Chinese Academy of Sciences, Shanghai 200050 (China); Song Zhenlun [Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China)], E-mail: songzhenlun@nimte.ac.cn

    2009-11-15

    AlN/Al dual protective coatings were prepared on NdFeB by DC magnetron sputtering in a home-made industrial apparatus. Comparing with Al coating, AlN/Al coatings have a denser structure of an outmost AlN amorphous layer following an inner Al columnar crystal layer. The coatings and NdFeB substrate combine well, and moreover, there is occurrence of metallurgy bonding in the interface layer. Both Al and AlN/Al coatings have a good protective ability to NdFeB. Especially, the corrosion resistance of AlN/Al coated NdFeB is improved largely. AlN/Al and Al protective coatings not only do not deteriorate the magnetic properties of NdFeB, but contribute to their slight increase.

  8. AlN/Al dual protective coatings on NdFeB by DC magnetron sputtering

    International Nuclear Information System (INIS)

    Li Jinlong; Mao Shoudong; Sun Kefei; Li Xiaomin; Song Zhenlun

    2009-01-01

    AlN/Al dual protective coatings were prepared on NdFeB by DC magnetron sputtering in a home-made industrial apparatus. Comparing with Al coating, AlN/Al coatings have a denser structure of an outmost AlN amorphous layer following an inner Al columnar crystal layer. The coatings and NdFeB substrate combine well, and moreover, there is occurrence of metallurgy bonding in the interface layer. Both Al and AlN/Al coatings have a good protective ability to NdFeB. Especially, the corrosion resistance of AlN/Al coated NdFeB is improved largely. AlN/Al and Al protective coatings not only do not deteriorate the magnetic properties of NdFeB, but contribute to their slight increase.

  9. 34 - 38 Ashiru et al.

    African Journals Online (AJOL)

    User

    INTRODUCTION. Commercial fish feeds are usually expensive because the traditional or conventional protein source ingredient such as fish meal, soyabean ... consumption (Madu et al., 2003). Fish feed constitute for about 60-80% of management cost in agricultural production (Igonifagha, 1979). Periodic scarcity and.

  10. 39 - 47_Aminu et al.

    African Journals Online (AJOL)

    User

    estimated 453, 000 resulting in the death of a child younger than five years. In Sub-Saharan Africa and. Asia, according to Kotloff et al., (2013), rotavirus is one of the four most common causes of moderate to severe diarrhea among children <5 years of age. Diarrhea is one of the documented '10 killer conditions' among ...

  11. Oyebola et al (23).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    3+ described elsewhere (Oyebola et al., 2010). Ho absorption peaks were obtained from transmission studies carried out with a Cary 5000. UV-VIS-NIR spectrophotometer and corresponding absorption coefficients deduced using the Beer-Lambert law. Spectral emission measurements were carried out using the schematic ...

  12. 180 - 184_ Farouk et al.,

    African Journals Online (AJOL)

    User

    College of Arts, Science and Remedial Studies, Kano, Nigeria aceutical and Medicinal ... d out to determine the levels of Cadmium (Cd) and Lead (Pb) in m ... and soil. Contamination of als may be due to natural, activities (Wilkinson et ation of ...

  13. Adewale et al (18).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    MATERIAL IN SOIL AND MINE TAILINGS OF AWO AND EDE, OSUN-STATE,. NIGERIA. 1*. 1. 2 ... The materials may be original (such as uranium and thorium) or decay .... following equation (Beck et al., 1972). D = 0.042A (K) + 0.429A.

  14. Idowu et al (19).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    aquifer flow (MacDonald et al., 2005). Typically, it travels vertically downwards through the unsaturated zone to the water table, from where it flows according to the hydraulic gradient, until it reaches an area of discharge where it occurs as springs or seepages, providing part of the dry season flow and constituting part of the.

  15. 94 - 99_Nafiu et al.

    African Journals Online (AJOL)

    User

    destination for tourist, it promotes tourism and ecotourism in .... Malaysia. It is also similar with the work of Abuessaila et al., (2011) who reported Trichostrongylus spp. (13.5%) ... animals that tend to receives medical attention were reported to ...

  16. El reclutamiento de menores en el conflicto armado colombiano. Aproximación al crimen de guerra

    Directory of Open Access Journals (Sweden)

    Paula Andrea Ramírez Barbosa

    2010-06-01

    Full Text Available El reclutamiento de menores en Colombia constituye un crimen de guerra contenido en la legislación nacional y en el Estatuto de la Corte Penal Internacional, de innegable gravedad por la naturaleza de los derechos que resultan afectados con su comisión. A los menores se les anula su dignidad y garantías fundamentales, al obligarlos a participar en conflictos armados, en los que son los blancos más fáciles de los enfrentamientos. La revictimización de los menores reclutados y la cifra negra de criminalidad, son características frecuentes a este tipo de crímenes, por ello, es importante fortalecer no sólo la investigación y sanción de los responsables, sino además la prevención y medidas de resocialización de los menores que son víctimas de este crimen.

  17. El reclutamiento de menores en el conflicto armado colombiano. Aproximación al crimen de guerra

    Directory of Open Access Journals (Sweden)

    Paula Andrea Ramírez Barbosa

    2010-07-01

    Full Text Available El reclutamiento de menores en Colombia constituye un crimen de guerra contenido en la legislación nacional y en el Estatuto de la Corte Penal Internacional, de innegable gravedad por la naturaleza de los derechos que resultan afectados con su comisión. A los menores se les anula su dignidad y garantías fundamentales, al obligarlos a participar en conflictos armados, en los que son los blancos más fáciles de los enfrentamientos. La revictimización de los menores reclutados y la cifra negra de criminalidad, son características frecuentes a este tipo de crímenes, por ello, es importante fortalecer no sólo la investigación y sanción de los responsables, sino además la prevención y medidas de resocialización de los menores que son víctimas de este crimen.

  18. Derecho humano al agua y al saneamiento: derechos estrechamente vinculados al derecho a la vida

    OpenAIRE

    Fernández Aller, Maria Celia; Luis Romero, Elena de; Guzmán Acha, Cristina

    2013-01-01

    Los derechos humanos al agua y al saneamiento están íntimamente relacionados con otros derechos esenciales para la vida, como la alimentación o la salud. Su reconocimiento como derechos humanos en 2010 marca un hito importante en el respeto, protección y realización de estos derechos, que se encuentran seriamente vulnerados para una mayoría de población más vulnerable y empobrecida, sobre todo en el ámbito rural. Mucho camino queda aún para conseguir no sólo la disponibilidad de agua y saneam...

  19. Personalidad y tolerancia al dolor

    Directory of Open Access Journals (Sweden)

    JESÚS M.ª CARRILLO

    2005-01-01

    Full Text Available Se examina la relación de algunas variables de personalidad -EPQ-A (Eysenck y Eysenck, 1975, NEO-PI (McCrae y Costa, 1988 y STA -personalidad esquizotípica- y STB -personalidad límite-, de Claridge y Broks (1984, con la tolerancia al dolor experimental inducido mediante agua fría (cold pressor test, según el procedimiento de Staats, Heckmat y Staats (1998 en una muestra filtrada mediante un cuestionario sobre dolor crónico, dolores de cabeza, de espalda, artritis, síndrome de Raynaud, y personas bajo medicación. La tolerancia al dolor experimental se evaluó mediante el Umbral del dolor (tiempo en segundos desde la introducción de la mano en el agua hasta el primer informe de dolor, Mantenimiento del dolor (duración en segundos de la inmersión de la mano desde la aparición del umbral hasta su retirada y Tolerancia al dolor (duración total en segundos de la inmersión de la mano desde su introducción hasta su retirada. Un análisis correlacional, factorial y de regresión por pasos mostraron un efecto cruzado entre medidas de ansiedad (tolerancia negativa al dolor y psicoticismo, siendo psicoticismo junto con control emocional predictores de tolerancia positiva al dolor. En cuanto a psicoticismo, parece que son sus elementos de naturaleza paranoide y de "dureza" los que afectan a una percepción atenuada del dolor.

  20. Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions.

    Science.gov (United States)

    Zhang, Kun; Li, Huan-Huan; Grünberg, Peter; Li, Qiang; Ye, Sheng-Tao; Tian, Yu-Feng; Yan, Shi-Shen; Lin, Zhao-Jun; Kang, Shi-Shou; Chen, Yan-Xue; Liu, Guo-Lei; Mei, Liang-Mo

    2015-09-21

    Magnetoresistance and rectification are two fundamental physical properties of heterojunctions and respectively have wide applications in spintronics devices. Being different from the well known various magnetoresistance effects, here we report a brand new large magnetoresistance that can be regarded as rectification magnetoresistance: the application of a pure small sinusoidal alternating-current to the nonmagnetic Al/Ge Schottky heterojunctions can generate a significant direct-current voltage, and this rectification voltage strongly varies with the external magnetic field. We find that the rectification magnetoresistance in Al/Ge Schottky heterojunctions is as large as 250% at room temperature, which is greatly enhanced as compared with the conventional magnetoresistance of 70%. The findings of rectification magnetoresistance open the way to the new nonmagnetic Ge-based spintronics devices of large rectification magnetoresistance at ambient temperature under the alternating-current due to the simultaneous implementation of the rectification and magnetoresistance in the same devices.

  1. Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions

    OpenAIRE

    Zhang, Kun; Li, Huan-huan; Grünberg, Peter; Li, Qiang; Ye, Sheng-tao; Tian, Yu-feng; Yan, Shi-shen; Lin, Zhao-jun; Kang, Shi-shou; Chen, Yan-xue; Liu, Guo-lei; Mei, and Liang-mo

    2015-01-01

    Magnetoresistance and rectification are two fundamental physical properties of heterojunctions and respectively have wide applications in spintronics devices. Being different from the well known various magnetoresistance effects, here we report a brand new large magnetoresistance that can be regarded as rectification magnetoresistance: the application of a pure small sinusoidal alternating-current to the nonmagnetic Al/Ge Schottky heterojunctions can generate a significant direct-current volt...

  2. Caracterización de algunos factores de riesgo asociados al intento suicida en adolescentes

    Directory of Open Access Journals (Sweden)

    Idelis Fedeslinda Arias de la Torre

    2015-03-01

    Full Text Available El intento suicida es un problema de salud frecuente en los adolescentes, su manejo en muchas ocasiones resulta complejo y desalentador, por el riesgo de suicidio. Se realizó un estudio observacional, descriptivo, retrospectivo, con el objetivo de caracterizar algunos de los factores de riesgo asociados al intento suicida en los adolescentes del municipio de Bayamo en el año 2014. La población de estudio estuvo conformada por los 108 adolescentes que presentaron intento suicida, notificados por tarjeta de enfermedad de declaración obligatoria (EDO, en el departamento de Estadística de dicho municipio, en el período de estudio. Se estudiaron las variables edad, sexo, área de salud, antecedentes patológicos personales de enfermedades o sintomatologías psiquiátricas, conflictos personales, conflictos familiares y el método empleado de suicidio. Los datos fueron analizados mediante el paquete estadístico SPSS, mostrados en tablas, expresados en números y porcientos. En la población de estudio predominó el sexo femenino (78,70 %, el grupo de edad de 14 a 16 años (50 %, el área de salud del policlínico Bayamo Oeste (tasa 74,9 x 10 000 habitantes, los deseos de hacerse daño (100 %, las malas relaciones con los padres (63,9 % y la ingestión de tabletas (92,7 %

  3. Cartas al editor publicadas en revistas biomédicas peruanas indizadas en SciELO-Perú 2006-2013

    Directory of Open Access Journals (Sweden)

    Juan José Montenegro-Idrogo

    Full Text Available Estudio bibliométrico que describe las características de cartas al editor publicadas en el período 2006-2013 en revistas biomédicas indizadas a SciELO-Perú. Se recopilaron 253 cartas (10,3% del total de publicaciones, el mayor número de cartas (139 fue de la Revista Peruana de Medicina Experimental y Salud Pública, con notorio aumento por años. El 25% de cartas presentaron participación médico-estudiantil. El 14% de cartas presentaron autores con filiación internacional y 27% de cartas con filiación endogénica - frecuente en revistas universitarias (AFM, RMH. Los criterios habituales que justifican la publicación de cartas fueron: opinión sobre hecho médico o de dominio público (35,6% y discusión de resultados, defectos metodológicos o de interpretación (22,9%. En revistas biomédicas indizadas a SciELO-Perú las cartas al editor constituyen un porcentaje de publicaciones que ha aumentado en los últimos años, con baja la publicación de cartas de hallazgos o datos propios, en comparación con criterios de opinión o crítica

  4. Al cruzar el límite/ Extreme Measures: cine, principios bioéticos e investigación clínica

    Directory of Open Access Journals (Sweden)

    Josep-E BAÑOS

    2016-09-01

    Full Text Available La utilización de películas comerciales para ilustrar conflictos bioéticos es una experiencia frecuente en la docencia universitaria de ciencias de la salud. En este ámbito, la investigación clínica es un importante paradigma para conocer cómo los principios éticos pueden aplicar en situaciones de análisis complejo. En el presente artículo se analiza el interés de una película comercial, Al cruzar el límite/ Extreme Measures (1996 de Michael Apted, para presentar el difícil debate de aplicación de los principios de autonomía, justicia, beneficencia y no maleficencia. El film presenta diversas situaciones en el marco de un argumento policíaco inspirado en el libro del médico norteamericano Michael Palmer. Los autores comentan las fortalezas y las debilidades de la película, así como aquellos aspectos que pueden plantearse en el debate de la película, y sugieren su posible utilidad para debatir cómo los factores personales pueden influenciar la toma de decisiones en situaciones límite. La principal conclusión es que Al cruzar el límite puede ser un instrumento útil a pesar de que se necesitan pruebas empíricas para confirmarla.

  5. Jongerenwerk als werkplaats voor professionalisering

    Directory of Open Access Journals (Sweden)

    Judith Metz

    2012-03-01

    met wetenschappelijke experimentele kennis als norm, is dat zij niet altijd goed aansluiten bij de complexiteit en flexibiliteit van de uitvoeringspraktijk. Vraag is: wat dan wel? In Amsterdam richten opleidingen en werkveld in 2008 Youth Spot op, het onderzoek- en praktijkcentrum voor jongerenwerk, met als doel om gezamenlijk te werken aan de profilering, professionalisering en praktijkontwikkeling van het jongerenwerk. Dit artikel belicht de aanleiding voor het ontstaan van Youth Spot, de structuur van de samenwerking, de ervaringen met de wijze van samen werken en de meerwaarde voor de professionalisering van het grootstedelijk jongerenwerk. Daarmee biedt dit artikel enerzijds een kijkje in de keuken van het (grootstedelijke jongerenwerk en anderzijds biedt zij inzicht in ervaringen met alternatieve professionalisering strategieën.

  6. Response to Lefebvre et al.

    Science.gov (United States)

    Takeda, K; Kou, I; Kawakami, N; Yasuhiko, Y; Ogura, Y; Imagawa, E; Miyake, N; Matsumoto, N; Sudo, H; Kotani, T; Nakamura, M; Matsumoto, M; Watanabe, K; Ikegawa, S

    2017-11-01

    Congenital scoliosis (CS) is a common vertebral malformation with incidence of up to 1 of 1000 births worldwide. Recently, TBX6 has been reported as the first disease gene for CS: about 10% of CS patients are compound heterozygotes of rare null mutations and a common haplotype composed by 3 SNPs in TBX6. Lefebvre et al in this journal reported that 2 patients with spondylocostal dysostosis (SCD), a rare skeletal dysplasia affecting spine and ribs also have TBX6 mutations: 1 carried the microdeletion and a rare missense variant, and another 2 rare missense variants. We investigated the pathogenicity of the 3 missense variants in SCD by a luciferase assay. The results were negative for the proposal of Lefebvre et al. We consider these 2 SCD patients are more probably compound heterozygotes of null mutations and a common risk haplotype just as CS patients with TBX6 mutations. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  7. Transient oxidation of Al-deposited Fe-Cr-Al alloy foil

    International Nuclear Information System (INIS)

    Andoh, A.

    1997-01-01

    The oxide phases formed on an Al-deposited Fe-Cr-Al alloy foil and an Fe-Cr-Al alloy foil of the same levels of Al and (La+Ce) contents, and their oxidation kinetics have been studied in air at 1173 and 1373 K using TGA, XRD and SEM. Al deposition promotes the growth of metastable aluminas (θ-Al 2 O 3 , γ-Al 2 O 3 ). Scales consisting of θ-Al 2 O 3 and a small amount of α-Al 2 O 3 develop on the Al-deposited foil at 1173 K and exhibit the whisker-type morphology. In the early stage of oxidation at 1373 K, thick scales consisting of θ-Al 2 O 3 and α-Al 2 O 3 grow rapidly on the Al-deposited foil. The transformation from θ-Al 2 O 3 to α-Al 2 O 3 is very fast, and the scales result in only α-Al 2 O 3 . In contrast, α-Al 2 O 3 scales containing a minor amount of FeAl 2 O 4 develop on the alloy foil. The growth rate of α-Al 2 O 3 scales on the Al-deposited foil is smaller than that on the alloy foil and very close to that on NiAl at 1373 K. (orig.)

  8. Response to Lisovski et al.

    Science.gov (United States)

    Streby, Henry M.; Kramer, Gunnar R.; Peterson, Sean M.; Lehman, Justin A.; Buehler, David A.; Andersen, David

    2018-01-01

    Lisovski et al. [1] describe the widely recognized limitations of light-level geolocator data for identifying short-distance latitudinal movements, recommend that caution be used when interpreting such data, intimated that we did not use such caution and argued that environmental shading likely explained the Golden-winged Warbler (Vermivora chrysoptera) movements described in our 2015 report [2] . Lisovski et al. [1] conclude that the bird movements we reported could not be disentangled from estimation error in stationary animals caused by environmental shading. We argue that, to the contrary, these hypotheses can easily be disentangled because the premise that environmental shading caused synchronous and parallel error among geolocators is false. With their assertion that our location estimates could be biased by >3,500 km on a day with no observable local sources of shading, Lisovski et al. [1] have taken a position of incredulity toward all geolocator-based animal movement data published to date.

  9. Vormundschaftsrecht als Grundlage politischer Herrschaft

    Directory of Open Access Journals (Sweden)

    Arne Duncker

    2006-07-01

    Full Text Available In ihrer beachtlichen und sehr gewissenhaft dokumentierten Arbeit über vormundschaftliche Regentschaften im 16. und 17. Jahrhundert beschreibt Pauline Puppel unter ausführlichem Bezug auf zeitgenössische Literatur und Archivalien sowohl die allgemeine Rechtslage im damaligen Reich als auch die Anwendungsfälle in Hessen, wo zwischen 1500 und 1700 insgesamt viermal eine Landgräfin als Vormünderin des Fürsten zur Regentin ihres Landes wurde. Dies steht exemplarisch für eine bereits in der Frühen Neuzeit mögliche und nicht einmal ganz seltene Form politischer Frauenherrschaft, die bisher oft nicht hinreichend gewürdigt wurde. Puppels Untersuchung ist in zwei Hauptteile gegliedert. Der erste Teil (Das juristische Regelwerk“, S. 34-143 behandelt die zeitgenössischen Rahmenbedingungen der durch Frauen ausgeübten Vormundschaft und Regentschaft. Der zweite Abschnitt („Die Landgräfinnen von Hessen als Regentinnen“, S. 144-307 befasst sich mit der Ausfüllung dieser Regeln durch konkrete Fallbeispiele in Gestalt von Leben und Regentschaft der regierenden Landgräfinnen von Hessen.

  10. Stem cells therapy for ALS.

    Science.gov (United States)

    Mazzini, Letizia; Vescovi, Angelo; Cantello, Roberto; Gelati, Maurizio; Vercelli, Alessandro

    2016-01-01

    Despite knowledge on the molecular basis of amyotrophic lateral sclerosis (ALS) having quickly progressed over the last few years, such discoveries have not yet translated into new therapeutics. With the advancement of stem cell technologies there is hope for stem cell therapeutics as novel treatments for ALS. We discuss in detail the therapeutic potential of different types of stem cells in preclinical and clinical works. Moreover, we address many open questions in clinical translation. SC therapy is a potentially promising new treatment for ALS and the need to better understand how to develop cell-based experimental treatments, and how to implement them in clinical trials, becomes more pressing. Mesenchymal stem cells and neural fetal stem cells have emerged as safe and potentially effective cell types, but there is a need to carry out appropriately designed experimental studies to verify their long-term safety and possibly efficacy. Moreover, the cost-benefit analysis of the results must take into account the quality of life of the patients as a major end point. It is our opinion that a multicenter international clinical program aime d at fine-tuning and coordinating transplantation procedures and protocols is mandatory.

  11. Comparison of one and two-neutron transfer near the Coulomb barrier for the 27Al(18O, 16O)29Al, 27Al(18O, 17O)28Al and 27Al(13C, 12C)28Al reactions

    International Nuclear Information System (INIS)

    Schiller, S.A.; Eck, J.S.

    1975-01-01

    Total reaction cross sections for the transfer reactions 27 Al( 18 O, 16 O) 29 Al, 27 Al( 18 O, 17 O) 28 Al and 27 Al( 13 C, 12 C) 28 Al are reported for center-of-mass energies between 13 and 20 MeV for 18 O projectiles and between 11 and 17.5 MeV for 13 C projectiles. The reaction products, 29 Al, and 28 Al, beta decay to 29 Si and 28 Si, respectively, and the subsequent γ decays of 29 Si and 28 Si were measured. Due to the relatively long beta decay half lives, data were taken in a beam-off mode, resulting in very clean spectra. Total cross sections were calculated and compared with a theoretical model for barrier penetration proposed by C.Y. Wong. Differences between 18 O induced one and two-neutron total transfer reaction cross sections are discussed. (orig.) [de

  12. AlN nanoparticle-reinforced nanocrystalline Al matrix composites: Fabrication and mechanical properties

    International Nuclear Information System (INIS)

    Liu, Y.Q.; Cong, H.T.; Wang, W.; Sun, C.H.; Cheng, H.M.

    2009-01-01

    To improve the specific strength and stiffness of Al-based composites, AlN/Al nanoparticles were in-situ synthesized by arc plasma evaporation of Al in nitrogen atmosphere and consolidated by hot-pressing to fabricate AlN nanoparticle-reinforced nanocrystalline Al composites (0-39 vol.% AlN). Microstructure characterization shows that AlN nanoparticles homogeneously distribute in the matrix of Al nanocrystalline, which forms atomically bonded interfaces of AlN/Al. The hardness and the elastic modulus of the nanocomposite have been improved dramatically, up to 3.48 GPa and 142 GPa, respectively. Such improvement is believed to result from the grain refinement strengthening and the interface strengthening (load transfer) between the Al matrix and AlN nanoparticles

  13. Armaflex in Burj al Arab; Armaflex im Burj al Arab

    Energy Technology Data Exchange (ETDEWEB)

    Steiner, B.

    2003-07-01

    This article describes the Burj al Arab in Dubai, the unique seven-star high-rise hotel. The construction of the hotel, that is built on 250 piles driven into the sand of an artificial island in the Persian Gulf, is described. In particular, various special materials used in the building are described, as are the luxurious fittings and furnishings of the hotel. The cooling and air-conditioning installations that are necessary as a result of the desert climate of Dubai are described and the use of 'Armaflex' elastomer insulating material for the insulation of refrigeration machines and cold-water piping is discussed.

  14. Structural stability and electronic properties of AlCu3, AlCu2Zr in AlZr3: Stabilnost strukture in elektronske lastnosti AlCu3, AlCu2Zr in AlZr3:

    OpenAIRE

    Cheng, Rong; Wu, Xiao-Yu

    2013-01-01

    First-principles calculations were performed to study the alloying stability and electronic structure of the Al-based intermetallic compounds AlCusub3, AlCusub{2}Zr and AlZrsub3. The results show that the lattice parameters obtained after the full relaxation of the crystalline cells are consistent with the experimental data, and these intermetallics have a strong alloying ability and structural stability due to their negative formation energies and their cohesive energies. A further analysis ...

  15. Necesidad de asistencia educativa al niño hospitalizado

    Directory of Open Access Journals (Sweden)

    Marian SERRADAS FONSECA

    2009-11-01

    Full Text Available RESUMEN: Teniendo en cuenta las necesidades educativas del niño enfermo y a su vez la necesidad de compensar y normalizar en la medida de lo posible la situación de estos niños, presentamos los resultados obtenidos en la investigación que hemos llevado a cabo en el Hospital Clínico Universitario y el Hospital «Virgen de la Vega» de Salamanca, y que hace referencia a la situación y tratamiento de niños hospitalizados en edad escolar. Los resultados indican niveles moderados de ansiedad en los niños como un estado producto de su hospitalización, además estos resultados arrojaron diferencias significativas entre los niños que asisten al aula hospitalaria de los que no reciben ningún tipo de atención educativa en el estado de la ansiedad. De acuerdo a estos resultados y desde la perspectiva de la pedagogía hospitalaria, defendemos la necesidad de desarrollar programas de intervención educativa en el ámbito hospitalario como una alternativa en la reducción de la ansiedad infantil hospitalaria, por ser este trastorno uno de los más frecuentes dentro de las reacciones de los niños enfermos hospitalizados.ABSTRACT: Taking into account the educational needs of sick children and in turn, the need to compénsate and normalize the situation of these children as much as possible, we present the results obtained in the research we carried out in the University Clinical Hospital and the «Virgen de la Vega» Hospital in Salamanca. This research refers to the situation and treatment of school-aged hospitalised children. The results indícate modérate levéis of anxiety in the children as a condition produced by their hospitalisation. Furthermore, these results show significant differences in this state of anxiety between the children who attend the hospital classroom and those that receive no type of educational attention. In accordance with these results and from the perspective of hospital education, we defend the need to develop

  16. Cáncer de laringe y exposición laboral al amianto

    Directory of Open Access Journals (Sweden)

    A. Borin Mario

    2015-06-01

    Full Text Available Resumen: Es conocido el riesgo para la salud que supone la exposición laboral a las fibras del amianto. El cáncer de laringe debido a la inhalación de polvo de amianto está incluido en el anexo II del RD 1299/2006. Hasta la fecha los estudios epidemiológicos realizados han obtenido resultados controvertidos con respecto a dicha asociación. Objetivos: Identificar las últimas evidencias científicas de la asociación entre la exposición laboral al amianto y el cáncer de laringe, conocer el riesgo de presentar cáncer de laringe acorde a la frecuencia de exposición al amianto e identificar el tipo de cáncer de laringe más frecuente en relación a dicha exposición laboral. Métodos: Se realizó una revisión sistemática de artículos de evidencia científica recolectados de distintas bases de datos (Medline, OSH, Scopus, IBECS, ILO realizando una búsqueda bibliográfica por descriptores MeSH (cáncer de laringe, exposición laboral, exposición ocupacional, asbesto de artículos publicados entre 1999 y 2014, en humanos, artículos originales exclusivamente, con un tamaño muestral mayor de 30, en castellano, inglés, francés, italiano y portugués. Se excluyeron estudios duplicados, estudios no originales y estudios de prevalencia sin grupo control. Posterior a esto se realizó una lectura sistemática evaluando el nivel de evidencia de los estudios con los criterios SIGN. Resultados: Se recolectaron 107 artículos a través de la búsqueda bibliográfica, tras aplicar criterios de inclusión/exclusión se seleccionaron un total de 6 artículos (4 estudios caso-control, 1 estudio de cohortes y 1 meta-análisis. De estos, 2 estudios de caso-control y el estudio de cohortes obtuvieron una asociación estadísticamente significativa entre la exposición laboral al amianto y el cáncer de laringe. El meta-análisis sugiere asociación, aunque sin obtener significación estadística, mientras que los 2 restantes estudios de caso

  17. A study of ion damage in Al, Al/Cu and Al/Ag

    International Nuclear Information System (INIS)

    Marikar, P.

    1979-06-01

    Specimens of pure aluminium, aluminium-copper and aluminium-silver have been irradiated with 20 keV helium ions and/or 100 keV aluminium ions and the nature of the damage assessed using transmission electron microscopy. Irradiation with 20 keV helium ions to a dose of 2.7 x 10 15 ions cm -2 results in the formation of interstitial loops and helium gas bubbles. The helium bubbles were detectable only after annealing at a high temperature following irradiation. When the helium preinjected aluminium specimens were irradiated with 100 keV Al + ions to a dose of 84 dpa at temperatures above 150 0 C, voids were observed to form. At a lower dose of 64 dpa, only a high density of dislocation loops was observed. Al-1 wt% Cu alloy containing partially coherent theta' precipitates resists void formation to a considerable extent, and Al-10 wt% Ag alloy containing coherent G.P. zones offers complete resistance to both dislocation loop nucleation and void formation. The experimental results are discussed in the light of the current theories of irradiation induced damage in metals. The importance of the dislocation-sink efficiency for point defects, the gaseous impurity and the alloying elements in determining void formation is highlighted. (author)

  18. Investigations of Al-Dalang and Al-Hawashat meteorites

    Energy Technology Data Exchange (ETDEWEB)

    Gismelseed, A. M., E-mail: abbasher@squ.edu.om [Sultan Qaboos University, College of Science (Oman); Abdallah, S. B. [University of Khartoum, Department of Geology, Faculty of Science (Sudan); Al-Rawas, A. D.; Al-Mabsali, F. N.; Widatallah, H. M.; Elzain, M. E.; Yousif, A. A. [Sultan Qaboos University, College of Science (Oman); Ericsson, T. [Uppsala University, Department of Physics and Material Sciences (Sweden); Annersten, H. [Uppsala University, Department of Earth Sciences (Sweden)

    2016-12-15

    Mössbauer spectroscopy, X-ray diffraction (XRD) measurements, and electron microprobe analysis (EMPA) have been performed on two meteorites named Al-Dalang and Al-Hawashat after identifying their falling sites in the Western region of Sudan. These two meteorites are ordinary chondrites with similar mineralogy. XRD and EMPA show that the two specimens consist of primary olivine, ortho-pyroxene and later crystallising clino-pyroxene as reaction rims against plagioclase. Fe-metal phases are dominated by kamacite (≈6 wt.% Ni) and minor amounts of tetrataenite (≈52 wt.% Ni). Troilite (FeS) and alabandite (MnS) are optically observed as sulphide phases. The Mössbauer measurements at 295 and 78 K are in agreement with the above characterizations, showing at least two paramagnetic doublets which are assigned to olivine and pyroxene and magnetic sextets assigned to kamacite (hyperfine field ≈33.5 T) and troilite FeS (hyperfine field ≈31 T).

  19. FTD and ALS: genetic ties that bind.

    Science.gov (United States)

    Orr, Harry T

    2011-10-20

    Curiously, amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD), seemingly disparate neurodegenerative disorders, can be inherited together. Two groups (DeJesus-Hernandez et al. and Renton et al.) show that the long sought after ALS/FTD mutation on chromosomal region 9p is a hexanucleotide expansion in C90RF72. These studies, plus a study on X-linked ALS/FTD, provide molecular starting points for identifying pathways that link ALS and FTD pathogenesis. Copyright © 2011 Elsevier Inc. All rights reserved.

  20. United modification of Al-24Si alloy by Al-P and Al-Ti-C master alloys

    Institute of Scientific and Technical Information of China (English)

    韩延峰; 刘相法; 王海梅; 王振卿; 边秀房; 张均艳

    2003-01-01

    The modification effect of a new type of Al-P master alloy on Al-24Si alloys was investigated. It is foundthat excellent modification effect can be obtained by the addition of this new type of A1-P master alloy into Al-24Simelt and the average primary Si grain size is decreased below 47 μm from original 225 μm. It is also found that theTiC particles in the melt coming from Al8Ti2C can improve the modification effect of the Al-P master alloy. Whenthe content of TiC particles in the Al-24Si melt is 0.03 %, the improvement reaches the maximum and keeps steadywith increasing content of TiC particles. Modification effect occurs at 50 min after the addition of the Al-P master al-loy and TiC particles, and keeps stable with prolonging holding time.

  1. Tumores intracraneales: hallazgos tomográficos más frecuentes

    Directory of Open Access Journals (Sweden)

    José Antonio Navarro Mariño

    2015-12-01

    Full Text Available La Tomografia Axial Computarizada (TAC es la técnica de neuroimagen más ampliamente utilizada para el diagnóstico de los tumores intracraneales. Se ha estimado que con este estudio  se pueden  detectar hasta el 90% de las neoplasias intracraneales. En tal sentido se realizó un estudio descriptivo, retrospectivo en 24 pacientes atendidos en el Hospital Pediátrico Provincial “Octavio de la Concepción y la Pedraja” de Holguín,  con diagnóstico de tumores  intracraneales, en el período comprendido de enero 2006 a diciembre 2011, a los cuales  se les realizó TAC   de cráneo, con el objetivo de describir los hallazgos tomográficos más incidentes.  Se tomaron en consideración la edad, sexo, tipo  histológico, hallazgos tomográficos directos e indirectos y la localización tumoral. Se encontró que los tumores intracraneales se presentaron más frecuentemente en pacientes entre los 5 y 9 años, predominando  el sexo masculino. Los Astrocitomas fueron los más representados (62.5%. Como  hallazgos tomográficos indirectos  predominaron la dilatación ventricular (62.5% y  el  efecto de masa (58.3%. El 66.6% presentó  localización infratentorial intraaxial. La mayoría  de las lesiones  se observaron hipodensas  y homogéneas. Se recomendó  evaluar la correlación entre los tipos histológicos y los hallazgos imagenológicos, para su posible empleo como guías  para el diagnóstico.

  2. Rhupus, un síndrome poco frecuente: Reporte de un caso

    Directory of Open Access Journals (Sweden)

    Bryan Abarca-Acuña

    2015-01-01

    Full Text Available El Rhupus es uno de los síndromes de overlap, en la que existe sobreposición de artritis reumatoide y lupus eritematoso sistémico. Se reporta el caso de una mujer de 47 años de edad, con un cuadro caracterizado por poliartralgias a predominio en ambas rodillas y cadera derecha, fotosensibilidad, alopecia difusa, úlceras orales, dedos en cuello de cisne en manos, hallux valgus en ambos pies y edema en miembros superiores e inferiores. La coexistencia de dos o más enfermedades del tejido conectivo en un mismo paciente es un raro fenómeno, en especial la de LES y AR, la cual ha sido estimada entre el 0,01 y el 2%.

  3. Guías para el tratamiento de las parasitos intestinales frecuentes en Colombia

    Directory of Open Access Journals (Sweden)

    David Botero R.

    1983-12-01

    Full Text Available Si bien es cierto que no existe droga ideal en ninguna de las ramas de la medicina es necesario destacar que en los últimos años se han obtenido importantes avances en el tratamiento de las parasitosis intestinales (1,2. Es así como hoy se cuenta con antiparasitarios de dosis única, altos grados de efectividad y muy buena tolerancia. Para no citar sino un ejemplo, recordemos cómo los tricocéfalos, hasta hace poco tiempo de difícil tratamiento. hoy pueden ser controlados eficazmente con solo una dosis de medicamento. Tan importantes avances facilitan indudablemente los tratamientos antihelmínticos comunitarios como medida de salud pública. y se convierten en herramienta valiosísima en cualquier plan encaminado a mejorar efectivamente la salud de la comunidad (3.

  4. Aceites vegetales de uso frecuente en Sudamérica: características y propiedades

    OpenAIRE

    Durán Agüero, Samuel; Torres García, Jairo; Sanhueza Catalán, Julio

    2015-01-01

    El consumo de aceites vegetales se ha incrementado en las últimas décadas en nuestra sociedad y son parte importante de la dieta en todo el mundo. Sudamérica es un gran productor de diferentes aceites vegetales. La composición de los aceites vegetales no es estándar, ya que varía considerablemente en el aporte de ácidos grasos saturados, monoinsaturados y poliinsaturados, y particularmente en el aporte de ácidos grasos omega-6 y omega-3, asociado a la fuente de origen, ya sea especie vegetal,...

  5. Carcinoma verrucoso plantar. A propósito de un caso poco frecuente

    OpenAIRE

    López López, Daniel; Rodríguez Sanz, David; Morales Ponce, Ángel; Soriano Medrano, Alfredo

    2013-01-01

    Antecedentes: Los carcinomas verrucosos en pocas ocasiones se mencionan en la literatura su localización en la planta de los pies, siendo una variante bien diferenciada del carcinoma de células escamosas visto en mucosa y piel, incluyendo los pies. Objetivo: Describir las características clínicas, histopatológicas y de laboratorio y los resultados de un caso clínico inusual de un carcinoma verrucoso en la planta del pie. Métodos: Presentamos un extraño caso de un carcinoma verr...

  6. La innovación hotelera como respuesta a las necesidades de los viajeros frecuentes.

    Directory of Open Access Journals (Sweden)

    Cindy Melissa Loor Mero

    2015-11-01

    Full Text Available Las mini cápsulas hoteleras son pequeños dormitorios creados para los viajeros en espera por su próximo vuelo, cada una de estas cápsulas están equipadas con la finalidad de cubrir las necesidades básicas de los viajeros como son, el internet, cama, televisor, etc. La implementación de estas cápsulas hoteleras surge con el propósito de cubrir ciertas necesidades de las personas que para ellos viajar es parte de su vida diaria sea por placer, negocios o necesidad, dado que por diversos motivos ajenos a la gestión aeroportuaria los vuelos pueden sufrir retraso en sus horas ya programada, ocasionado así que las salas de espera del Aeropuerto pueda llegar a sobre poblarse y no poder cumplir con los requerimientos mínimos de sus usuarios, surge esta nueva y vanguardista alternativa con el objetivo de hacer más ameno el tiempo de espera de los usuarios el propósito siempre será más altas expectativas y requerimientos.

  7. Infecciones por parásitos más frecuentes y su manejo

    Directory of Open Access Journals (Sweden)

    B. Werner Apt, Dr.

    2014-05-01

    Debido a estos antecedentes creímos que sería útil revisar la epidemiología y clínica de las principales parasitosis del mundo y, a través de tablas, destacar el diagnóstico de laboratorio y la terapia tanto de las enteroparasitosis como las histo-hemoparasitosis y las originadas por artrópodos.

  8. Patología poco frecuente de la región lumbo-sacra

    Directory of Open Access Journals (Sweden)

    Mario Peña Cortés

    1993-01-01

    Full Text Available Se analizan los datos relacionados con 565 pacientes que presentaban lumbalgia crónica como motivo de consulta. El criterio para la inclusión de los pacientes en el trabajo fue la presencia de dolor lumbar crónico. Se presentan los diagnósticos definitivos en el grupo de pacientes estudiados y se analiza en forma exhaustiva un grupo de 81 pacientes con "Mega-apófisis transversa de L5".

  9. Frecuencia de los hongos asociados al desarrollo de mohos poscosecha en el pedúnculo de la piña en dos zonas de Costa Rica

    Directory of Open Access Journals (Sweden)

    Johanny Castro Chinchilla

    2017-01-01

    Full Text Available La piña es uno de los principales cultivos de exportación en Costa Rica y la presencia de moho en el pedúnculo afecta su calidad en los mercados internacionales. El objetivo de esta investigación fue determinar en frutos de piña, en la cera aplicada sobre la fruta y en el aire de las cámaras de enfriamiento, la frecuencia de los principales hongos asociados al desarrollo de mohos en el pedúnculo. Se realizó un muestreo mensual de abril de 2012 a marzo de 2013 en empacadoras de Sarapiquí y Puntarenas, Costa Rica. En cada empacadora se muestreó: frutos luego del proceso-comercial que se realiza para exportación y almacenamiento, la cera aplicada sobre la superficie de las frutas y el aire de las cámaras de enfriamiento. Se realizó un análisis de frecuencia de los principales hongos recuperados por muestreo en cada zona, para la cáscara y el pedúnculo, la cera y el aire. Además, se comparó el crecimiento in vitro a 18°C de los hongos más frecuentes al finalizar los muestreos. El hongo más frecuente en las cámaras de enfriamiento, el pedúnculo y la cáscara de ambas zonas y en la cera de Sarapiquí fue Penicillium diversum, con valores entre 7% y 100%. Mientras que en la cera de Puntarenas únicamente destacó la presencia de un grupo de hongos de micelio blanco. P. purpureogenum, Penicillium sp., Talaromyces calidicanius y Cladosporium sp., fueron microorganismos también recuperados con alta frecuencia tanto en la fruta como en el aire de las cámaras de enfriamiento de ambas empacadoras. P. purpureogenum, P. diversum y T. calidicanius fueron las especies con mayor crecimiento in vitro. Se concluyó que el manejo integrado de P. diversum, P. purpureogenum y T. calidicanius es necesario si se desea evitar el desarrollo de moho en el pedúnculo de la piña.

  10. The ALS gun electronics system

    International Nuclear Information System (INIS)

    Lo, C.C.

    1993-01-01

    The ALS Gun Electronics system has been designed to accommodate the gun with a custom made socket and a high speed electronics circuit which is capable of producing single and multiple electron bunches with time jitters measured at better than 50 PS. The system generates the gated RF signal at ground level before sending it up to the 120 KV-biased gun deck via a fiber optic cable. The current pulse width as a function of grid bias, using an Eimac 8847A planar triode simulating an electron gun, was measured to show the relationship between the two parameters

  11. The ALS Gun Electronics system

    International Nuclear Information System (INIS)

    Lo, C.C.

    1993-05-01

    The ALS Gun Electronics system has been designed to accommodate gun with a custom made socket and high speed electronics circuit which is capable of producing single and multiple electron bunches with time jitters measured at better than 50 PS. The system generates the gated RF signal at ground level before sending it up to the 120 KV-biased gun deck via a fiber optic cable. The current pulse width as a function of grid bias, using an Eimac 8847A planar triode simulating an electron gun, was measured to show the relationship between the two parameters

  12. Aportes amazonicos al formativo andino*

    OpenAIRE

    Morales Chocano, Daniel

    2014-01-01

    RESUMEN La tesis de J.C Tello sobre los orígenes amazónicos de la cultura Chavín ha tenido en la iconografía amazónica presente en Chavin sus argumentos mas fuertes, sin embargo, falta mucho por investigar el aspecto ideológico que representan esos iconos como el jaguar, las cabezas trofeo y el uso de alucinógenos, los cuales indudablemente se vinculan al chamanismo amazónico.

  13. Gettysburg: Monumento al mundo libre

    Directory of Open Access Journals (Sweden)

    Neutra, Richard J.

    1961-12-01

    Full Text Available En el verano del año 1958 fui invitado, por las autoridades de la Universidad de Arizona, en Tucson, a la colocación de la primera piedra de su futuro taller, construido para favorecer el desarrollo técnico del Estado. Varios alcaldes y ministros presenciaron la ceremonia, que fue muy interesante, y uno de los periodistas presentes, John Riddick, del "Tucson Daily Citizen", invitó cordialmente, a mi esposa y a mí, a atravesar, al día siguiente, la frontera mejicana, que cruzaba un vasto desierto.

  14. A melancolia em Al Berto

    OpenAIRE

    Camila Emanuele Martins de Souza

    2015-01-01

    Este trabalho objetiva estudar, sob a perspectiva da melancolia, os livros Salsugem (1984) e Horto de Incêndio (1997), de Al Berto. O autor português produz escritos em que a temática da melancolia atravessa a palavra, o que justifica o debruçar-se sobre as construções textuais da poética albertiana, a fim de traçar-lhe novas possibilidades de leitura por esse ângulo. Para isso, com o intuito de compreender o discurso melancólico segue-se o embasamento teórico: de Klibansky, Panosfsky e Saxl ...

  15. Nanoporous Al sandwich foils using size effect of Al layer thickness during Cu/Al/Cu laminate rolling

    Science.gov (United States)

    Yu, Hailiang; Lu, Cheng; Tieu, A. Kiet; Li, Huijun; Godbole, Ajit; Kong, Charlie

    2018-06-01

    The roll bonding technique is one of the most widely used methods to produce metal laminate sheets. Such sheets offer interesting research opportunities for both scientists and engineers. In this paper, we report on an experimental investigation of the 'thickness effect' during laminate rolling for the first time. Using a four-high multifunction rolling mill, Cu/Al/Cu laminate sheets were fabricated with a range of thicknesses (16, 40, 70 and 130 μm) of the Al layer. The thickness of the Cu sheets was a constant 300 μm. After rolling, TEM images show good bonding quality between the Cu and Al layers. However, there are many nanoscale pores in the Al layer. The fraction of nanoscale pores in the Al layer increases with a reduction in the Al layer thickness. The finite element method was used to simulate the Cu/Al/Cu rolling process. The simulation results reveal the effect of the Al layer thickness on the deformation characteristics of the Cu/Al/Cu laminate. Finally, we propose that the size effect of the Al layer thickness during Cu/Al/Cu laminate rolling may offer a method to fabricate 'nanoporous' Al sandwich laminate foils. Such foils can be used in electromagnetic shielding of electrical devices and noisy shielding of building.

  16. Betaalde arbeid als verdringer van vrijwilligerswerk? Overbelasting als mogelijke verklaring

    Directory of Open Access Journals (Sweden)

    Angela Kok-Van Meer

    2014-06-01

    Full Text Available Do paid work activities displace volunteering? A potential explanation from role overload theoryRecent changes in Dutch society might lead to a shortage of volunteers. On the one hand, the demand for volunteers is increasing: in the social welfare domain because of governmental austerity policies and in other domains such as sports because of the higher supervision intensity of activities. On the other hand, the supply of volunteers is likely to decrease as more and more women and older workers are active in the labor market, which reduces the time that is available for volunteering. Role overload theory would suggest that the increasing labor participation rate of certain categories of workers goes along with a decline of participation in voluntary work. The secondary data analysis shows that various role loads (work, care for children living at home are associated with differences in participation in voluntary work. However, while a higher number of contractual work hours and hours spent on work-related training are negatively associated with volunteer work, care for children living at home is positively associated with volunteering. These results provide only limited support for role overload theory.Betaalde arbeid als verdringer van vrijwilligerswerk? Overbelasting als mogelijke verklaringDe afgelopen jaren hebben zich enkele maatschappelijke veranderingen voorgedaan, die wellicht tot schaarste op de Nederlandse vrijwilligersmarkt zouden kunnen leiden. Enerzijds neemt de vraag naar vrijwilligers toe doordat subsidieregelingen versoberen (bijvoorbeeld in zorg en welzijn en de begeleidingsintensiteit in bepaalde organisaties stijgt (bijvoorbeeld in sport. Anderzijds neemt het aanbod van vrijwilligers af doordat vrouwen en ouderen meer en langer op de arbeidsmarkt actief zijn, waardoor minder tijd beschikbaar is voor vrijwilligerswerk. In dit artikel wordt aan de hand van de role overload theorie nagegaan of het al dan niet deelnemen aan

  17. Muflikhah et al., Afr., J. Infect. Dis.

    African Journals Online (AJOL)

    TOSHIBA

    2017-10-13

    Oct 13, 2017 ... Human infection occurs mainly by ingesting food or water ... Humans can be infected by consumption of uncooked meat, contaminated food or water, ..... Malaysia, Alvarado-Esquivel et al., (2011) in Mexico, Wang et al., (2014) ...

  18. Heterotopia als sociaal-ruimtelijke constructie

    NARCIS (Netherlands)

    Lengkeek, J.

    2003-01-01

    Uitleg van het begrip heterotopia, waar het gaat om het gebruik van de ruimte. Volgens de auteur wordt heterotopia als persoonlijke ruimte en als vrijetijdsruimte op tal van manieren tot stand gebracht; het is een georganiseerde wereld

  19. Benefits for Military Veterans with ALS

    Science.gov (United States)

    ... Chapters Certified Centers and Clinics Support Groups About ALS About Us Our Research In Your Community Advocate ... Veterans Resources for Military Veterans, Families & Survivors The ALS Association is working everyday to support people with ...

  20. con bajo peso al nacer

    Directory of Open Access Journals (Sweden)

    Adriana Mora Antó

    2005-01-01

    Full Text Available Esta investigación dio cuenta de la relación entre el estilo de funcionamiento familiar, los patrones de crianza y las edades de desarrollo evolutivo en niños, nacidos con bajo peso. El estudio descriptivo correlacional se realizó con 41 niños y sus madres, aplicándose cuestionarios sobre funcionamiento familiar, prácticas de crianza y desarrollo infantil. Los resultados señalaron la existencia de un funcionamiento familiar caracterizado por una cohesión amalgamada y una adaptabilidad caótica, una disciplina complaciente, falta de control y de límites claros en la díada madre-hijo. Se trataba de familias monoparentales, donde la temprana edad de concepción, el madresolterismo y el apoyo de la familia extensa eran constantes. Las edades evolutivas registradas indicaron un desarrollo inferior a la edad cronológica, en la mayor parte de los casos; sin embargo, éstas tendieron a ser superiores al compararlas con la edades reales de los infantes. No se encontró una correlación estadísticamente significativa entre la edad de desarrollo y los diferentes factores del funcionamiento familiar para algunos de los rangos de edad considerados; sin embargo, no se lo descartó por completo, especialmente en lo referente al optimismo familiar

  1. Rekonstruksi Konsep Ijtihad: Studi Pemikiran Ben’umar tentang al-Ijtihad fi al-Waqi’

    Directory of Open Access Journals (Sweden)

    Duski Ibrahim

    2015-10-01

    Full Text Available This paper is the result of a research that evaluating the reconstruction the concept of ijtihad, by discuss the idea of al-Ijtihad Ben'umar fi al-waqi’. This paper concludes that Al-Ijtihad fi al-waqi’ is actually a form of collective ijtihad (al ijtihad al-jama'i, by gathering the experts of shari'ah law (fuqaha` ash-shar'i and experts Researchers and scientists (khubara` al-'ashr. Because experts know the nash purposes, while researchers and scientists (al-khubara` know the reality (al-waqi’, the effects in the future (ma'alat = future effect and challenges (tahaddiyat. The idea of formulating the concept of al-ijtihad fi al-waqi’ emerged based on a premise that ijtihad is a creation of experts to implement Islamic law in society. Therefore, the concept of ijtihad experienced a significant development, start from using the nash from the language aspects, continue to the using of logic. At the moment when the situation people are increasingly develop, then the creation of ijtihad become a necessary to developed, for example in the form of al-ijtihad fi al-waqi’ . About the source of the formation of the concept of al -ijtihad fi al-waqi’ comes from theory about the functions of nash, al-manath theory in Islamic law, and supported by the theory of al-mashlalah al-mursalah.

  2. Al-quran dalam Perspektif Budaya

    OpenAIRE

    Sudrajat, Ajat

    2009-01-01

    Al-Quran merupakan kitab suci terakhir yang diturunkan kepada manusia. Tujuan utama diturunkannya al-Quran adalah sebagai kitab petunjuk yang meliputi bidang akidah, syariah, dan akhlak. Akan tetapi di luar ketiga petunjuk tersebut, al-Quran telah memberikan motivasi dan inspirasi kepada umat Islam dalam berbagai bidang kehidupan sehingga melahirkan jenis budaya tertentu. Dialog intelektual yang dilakukan secara kreatif oleh umat Islam terhadap al-Quran ternyata telah menghasilkan lahirnya ge...

  3. A study of the Al-rich part of the Al-Re alloy system

    International Nuclear Information System (INIS)

    Balanetskyy, S.; Grushko, B.

    2008-01-01

    The Al-rich part of the Al-Re phase diagram was reinvestigated by scanning and transmission electron microscopy, powder X-ray diffraction and differential thermal analysis. The earlier reported Al 12 Re, Al 6 Re, and Al 11 Re 4 phases were confirmed. Close to the Al 4 Re composition a high-temperature h-Al 4 Re and a low-temperature l-Al 4 Re phase were found to be formed at slightly different compositions. Both exhibited compositional ranges. A new phase was revealed close to the Al 3 Re composition. The Al 11 Re 4 phase is formed congruently at 1650 deg. C, Al 3 Re peritectically at 1610 deg. C, h-Al 4 Re peritectically at 1410 deg. C, l-Al 4 Re peritectically at ∼1000 deg. C, Al 6 Re peritectically at 813 deg. C and Al 12 Re peritectically at 746 deg. C. Finally, the Al 12 Re-(Al) eutectic is formed at 658 deg. C. The Al 3 Re and h-Al 4 Re are decomposed by eutectoid reactions at ∼946 and 833 deg., respectively. The structure of the h-Al 4 Re phase has not yet been clarified, but it is distinctly different from the Al 4 W phase suggested earlier. The structure of l-Al 4 Re was confirmed. The Al 3 Re phase was found to have a monoclinic structure with a = 0.5180(4) nm, b = 3.97641(9) nm, c = 0.4955(3) nm and β = 99.55(7) o

  4. Laser alloyed Al-Ni-Fe coatings

    CSIR Research Space (South Africa)

    Pityana, SL

    2008-10-01

    Full Text Available The aim of this work was to produce crack-free thin surface layers consisting of binary (Al-Ni, Al-Fe) and ternary (Al-Ni-Fe) intermetallic phases by means of a high power laser beam. The laser surface alloying was carried out by melting Fe and Ni...

  5. Bipolar characteristics of AlGaN/AlN/GaN/AlGaN double heterojunction structure with AlGaN as buffer layer

    International Nuclear Information System (INIS)

    Peng, Enchao; Wang, Xiaoliang; Xiao, Hongling; Wang, Cuimei; Yin, Haibo; Chen, Hong; Feng, Chun; Jiang, Lijuan; Hou, Xun; Wang, Zhanguo

    2013-01-01

    Highlights: •2DEG and 2DHG coexist in the AlGaN/AlN/GaN/AlGaN DH-structure. •The sheet densities of 2DEG and 2DHG vary with buffer Al content and GaN thickness. •The conditions for the disappearance of 2DHG are discussed. •Increasing buffer Al content provides better electron confinement. •Dislocation scattering is reduced in the DH-structure. -- Abstract: This is a theoretical study of AlGaN/AlN/GaN/AlGaN double heterojunction (DH) structure with AlGaN as buffer layer. Our calculation shows that as the buffer Al content increases, though two-dimensional electron gas (2DEG) sheet density decreases, the channel back-barrier caused by polarization-induced electric field in GaN provides better electron confinement. And under certain conditions the DH-structure shows bipolar characteristics, with an additional two-dimensional hole gas (2DHG) formed at GaN/AlGaN interface. The influence of the buffer Al content and GaN channel thickness on the 2DEG and 2DHG sheet densities are investigated, and the conditions for the disappearance of 2DHG are discussed. Also, the mobility inhibited by dislocation scattering is enhanced in DH-structure due to the enhancement of screening effect of the 2DEG

  6. Comportamiento del índice de bajo peso al nacer en el Policlínico Docente Cerro durante los años 2009-2010

    Directory of Open Access Journals (Sweden)

    Ramona Moraima Torres Zulueta

    Full Text Available Introducción: el bajo peso al nacerconstituye el índice predictivo más importante de la mortalidad infantil y se plantea que es 20 veces mayor que en el recién nacido con peso adecuado. Objetivo: comparar el comportamiento del índice de bajo peso al nacer en recién nacidos de un Policlínico durante los años 2009 y 2010. Método: se realizó un estudio comparativo de tipo descriptivo en el Policlínico Universitario Cerro, en la provincia La Habana, durante los años 2009 y 2010. El Universo estuvo constituido por los 350 recién nacidos vivos en el 2009 y los 318 en el 2010, y la muestra estuvo conformada por 23 niños con bajo peso al nacer en el 2009 y por 21 en el 2010. Se revisaron las historias obstétricas de las madres y se identificaron algunas variables socio-demográficas. Resultados: en ambos años estudiados la edad materna de mayor bajo peso al nacer fue de 20 a 34 años, con 73,9 y 80,9 %. Los factores de riesgo que se asociaron al bajo peso fueron: el hábito de fumar, que predominó en ambos años de estudio, representado por un 60,8 % en 2009 y por un 61,9 % en el 2010; el trastorno hipertensivo, con un 35 % en el año 2010 y un 27,7 % en el año 2009, y en ambos años fue superior en el grupo de gestantes con hipertensión arterial crónica. La anemia aumentó considerablemente en el 2010 en un 80,9 %, comparado con un 69,5 % en el año 2009. Conclusiones: el bajo peso al nacer resultó más frecuente en las gestantes de 20 a 34 años. Los factores de riesgo asociados al bajo peso al nacer con mayor frecuencia fueron: la anemia, el hábito de fumar y los trastornos hipertensivos.

  7. The effects of boron in TiAl/Ti3Al

    International Nuclear Information System (INIS)

    Feng, C.R.; Michel, D.J.; Crowe, C.R.

    1989-01-01

    The authors discuss the TiAl/Ti 3 Al interfacial misfit dislocations structures investigated by TEM in Ti-45Al alloy and Ti-45Al/TiB 2 composite. For TiAl with c/a = 1.02, only a single set of misfit dislocation arrays are crystallographically possible; these were observed in Ti-45Al alloy. However, the observation of three sets of misfit dislocation arrays in the Ti-45Al/TiB 2 composite suggests that the occupation of octahedral sites in the TiAl structure by excess boron was responsible for a decrease in the c/a ratio leading to an increased fcc character of the TiAl at the TiAl/Ti 3 Al interface

  8. Opportunity's 'Rub al Khali' Panorama

    Science.gov (United States)

    2005-01-01

    [figure removed for brevity, see original site] Click on the image for Opportunity's 'Rub al Khali' Panorama (QTVR) This panoramic image, dubbed 'Rub al Khali,' was acquired by NASA's Mars Exploration Rover Opportunity on the plains of Meridiani during the period from the rover's 456th to 464th sols on Mars (May 6 to May 14, 2005). Opportunity was about 2 kilometers (1.2 miles) south of 'Endurance Crater' at a place known informally as 'Purgatory Dune.' The rover was stuck in the dune's deep fine sand for more than a month. 'Rub al Khali' (Arabic translation: 'the empty quarter') was chosen as the name for this panorama because it is the name of a similarly barren, desolate part of the Saudi Arabian desert on Earth. The view spans 360 degrees. It consists of images obtained in 97 individual pointings of the panoramic camera. The camera took images with five camera filters at each pointing. This 22,780-by-6,000-pixel mosaic is an approximately true-color rendering generated using the images acquired through filters admitting light wavelengths of 750, 530, and 480 nanometers. Lighting varied during the nine sols it took to acquire this panorama, resulting in some small image seams within the mosaic. These seams have been smoothed in sky parts of the mosaic to better simulate the vista that a person would see if able to view it all at the same time on Mars. Opportunity's tracks leading back to the north (center of the panorama) are a reminder of the rover's long trek from Endurance Crater. The deep ruts dug by Opportunity's wheels as it became stuck in the sand appear in the foreground. The crest and trough of the last ripple the rover crossed before getting stuck is visible in the center. These wind-formed sand features are only about 10 to 15 centimeters (4 to 6 inches) tall. The crest of the actual ripple where the rover got stuck can be seen just to the right of center. The tracks and a few other places on and near ripple crests can be seen in this color image to

  9. Trato verbal paterno al adolescente

    Directory of Open Access Journals (Sweden)

    Rodríguez Juan Carlos

    1995-06-01

    Full Text Available

    En alguna ocasión se ha escuchado una palabra, que causa un sentimiento y a la vez un recuerdo, que lleva a evocar la adolescencia o la infancia, se recuerda quien la pronunciaba y en que ocasión la decía. Este es el poder que tiene una palabra y más aún si es dicha por el padre, puesto que este es la figura significativa que se lleva en la memoria. De aquí nace el interés de realizar un estudio, en donde se describe y analice la percepción y el sentimiento del adolescente, quien en esta etapa es vulnerable al cambio, ya que está buscando su propia identidad; que con el trato verbal paterno la encontrara sin ninguna dificultad o por el contrario nunca la encontrará.

     

  10. Compliance als Schutz vor Verbandsverantwortlichkeit?

    Directory of Open Access Journals (Sweden)

    Alexander Tipold

    2016-05-01

    Full Text Available Compliance bedeutet nicht nur Einhaltung und Beachtung von Vorschriften, sondern betrifft auch Maßnahmen, die die Einhaltung der Rechtsnormen absichern sollen und läuft somit auf eine Übererfüllung von Verpflichtungen hinaus. Wenn es keinen klaren Maßstab für Kontroll- und Überwachungspflichten gibt, besteht die Gefahr, dass Strafverfolgungsbehörden die Compliance-Maßnahmen als Maßstab heranziehen und so eine Verschärfung der Pflichten erzeugen. Nach den Regeln des Verbandsverantwortlichkeitsgesetzes schließt im Übrigen das beste Compliance-System nicht zwingend die Verbandsverantwortlichkeit aus, steht aber unter Umständen einem Verfahren gegen den Verband entgegen.

  11. Orientation of Al3Ti platelets in Al-Al3Ti functionally graded material manufactured by centrifugal method

    International Nuclear Information System (INIS)

    Watanabe, Y.; Fukui, Y.

    1997-01-01

    Al-Al 3 Ti functionally graded materials (FGMs) were manufactured by the centrifugal method with a commercial ingot of Al-5 mass% Ti master alloy. The alloy was melted at a liquid/solid coexisting temperature, at which Al 3 Ti remains as a solid, and then it was cast into a thick-walled ring. It was found that the Al-Al 3 Ti functionally graded material can be successfully fabricated by the centrifugal method. It was also found that the volume fraction of the Al 3 Ti can be increased by repetition of the centrifugal method. Since the shape of Al 3 Ti particles in a commercial alloy ingot is that of a platelet, the Al 3 Ti particles are arranged with their platelet planes nearly perpendicular to the radial direction. The orientation effects become stronger when the G number becomes larger. Although the final centrifugal casting was conducted under a very large centrifugal force for the specimen cast three times, the orientation effects were weaker than those in the specimen cast one time. From these observations, it is concluded that the origin of orientation of Al 3 Ti platelets can be attributed to the angular velocity gradient of the melt along the radial direction produced by the difference in the viscosity. (orig.)

  12. Eutectic microstructures of Al-ThA13 and Al-UA14 alloys

    International Nuclear Information System (INIS)

    Vieira, R.R.; Ambrozio Filho, F.

    1990-01-01

    This paper deals on the microstructures of systems Al-ThAl3 and Al-UAL4, which are composed by a non faceted phase (aluminium) and an intermetallic phase (ThAl3 or UAL4) which is normally faceted phase. (C.M.)

  13. Cryptanalysis of Lin et al.'s Efficient Block-Cipher-Based Hash Function

    NARCIS (Netherlands)

    Liu, Bozhong; Gong, Zheng; Chen, Xiaohong; Qiu, Weidong; Zheng, Dong

    2010-01-01

    Hash functions are widely used in authentication. In this paper, the security of Lin et al.'s efficient block-cipher-based hash function is reviewed. By using Joux's multicollisions and Kelsey et al.'s expandable message techniques, we find the scheme is vulnerable to collision, preimage and second

  14. TEM characterization of Al-C-Cu-Al2O3 composites produced by mechanical milling

    International Nuclear Information System (INIS)

    Santos-Beltran, A.; Gallegos-Orozco, V.; Estrada-Guel, I.; Bejar-Gomez, L.; Espinosa-Magana, F.; Miki-Yoshida, M.; Martinez-Sanchez, R.

    2007-01-01

    Novel Al-based composites (Al-C-Cu-Al 2 O 3 ) obtained by mechanical milling (MM), were characterized by transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS). Analyses of composites were carried out in both, the as-milled and the as-sintered conditions. C nanoparticles were found in the as-milled condition and Al 2 O 3 nanofibers were found in as-sintered products, as determined by EELS. C and Cu react with Al to crystallize in Al 3 C 4 and Al 2 Cu structures, respectively

  15. La "historia de los omeyas de al-Andalus" en los Masalik al-Absar

    OpenAIRE

    Molina, Luis

    2005-01-01

    [ES]Los Masalik al-absar de Ibn Fadl Allah al-`Umari incluyen un breve resumen de la Historia de los omeyas de al-Andalus. En este trabajo se analizan las relaciones textuales entre ese pasaje y el Muqtabis de Ibn Hayyan, crónica que resulta ser la fuente casi única utilizada por al-`Umari para redactar ese capítulo. [EN]The Masalik al-absar by Ibn Fadl Allah al-`Umari contains a brief summary of the Umayyad history in al-Andalus. In this article, the textual relationship between this p...

  16. Atomistic simulations of diffusion mechanisms in off-stoichiometric Al-rich Ni3Al

    International Nuclear Information System (INIS)

    Duan, Jinsong

    2007-01-01

    This paper presents dynamics simulation results of diffusion in off-stoichiometric Al-rich Ni 3 Al (Ni 73 Al 27 ) at temperature ranging from 1300 to 1550 K. The interatomic forces are described by the Finnis-Sinclair type N-body potentials. Particular attention is devoted to the effect of the extra 2% of Al atoms sitting on the Ni sublattice as antisite point defects (Al Ni ) on diffusion. Simulation results show that Ni atoms mainly diffuse through the Ni sublattice at the temperatures investigated. Al atoms diffuse via both the intrasublattice and antistructure bridge (ASB) mechanisms. The contribution to Al diffusion from the ASB mechanism decreases at the lower temperature (T Ni ) enhances both Al and Ni diffusion in Ni 73 Al 27 . The Ni-Al coupled diffusion effect is observed and understood at the atomic level for the first time

  17. Piezo-tunnel effect in Al/Al2O3/Al junctions elaborated by atomic layer deposition

    Science.gov (United States)

    Rafael, R.; Puyoo, E.; Malhaire, C.

    2017-11-01

    In this work, the electrical transport in Al/Al2O3/Al junctions under mechanical stress is investigated in the perspective to use them as strain sensors. The metal/insulator/metal junctions are elaborated with a low temperature process (≤200 °C) fully compatible with CMOS back-end-of-line. The conduction mechanism in the structure is found to be Fowler-Nordheim tunneling, and efforts are made to extract the relevant physical parameters. Gauge factors up to -32.5 were found in the fabricated devices under tensile stress. Finally, theoretical mechanical considerations give strong evidence that strain sensitivity in Al/Al2O3/Al structures originates not only from geometrical deformations but also from the variation of interface barrier height and/or effective electronic mass in the tunneling oxide layer.

  18. Al-Qurû’ fi Al-Qur’an ‘Inda Al-Anbary fi Al-Adhdâd

    Directory of Open Access Journals (Sweden)

    Raushani Azza

    2018-03-01

    Full Text Available This study examines about the term al-Qurû in the Qur’an. Al-Qurû is one of the most popular discussions among muslim scholars and mufasir, both in terms of language and fiqh. However, there is a bate among muslim scholar and mufasir about the meaning of al-Qurû. It’s because al-Qurû is one of the sentence of al-Adhdâd wich has two meaning, especially in the Qur’an, namely haid (menstruation and thahr. One of the most popular muslim scholar who concern in Qur’an and Arabic is al-Anbari with his book al-Adhdâd. Al-Anbari explains that Qurû has two meanings, First, al-Qurû in etymology is the form of Jama’ from aqra and qurû. Second, al-Qurû has a meaning of menstruation, thahr, or the period of iddah as a sign of being allowed to remarry after certain period of time.

  19. Interfacial phenomena in the reactions of Al-B, Al-Ti-B, and Al-Zr-B alloys with KF-AlF3 and NaF-AlF3 melts

    International Nuclear Information System (INIS)

    Lee, M.S.; Terry, B.S.; Grieveson, P.

    1993-01-01

    The interfacial phenomena occurring during the contacting of liquid Al-B, Al-Ti-B, and Al-Zr-B melts with KF-AlF 3 liquid fluxes have been investigated by optical examination of quenched metal drops previously immersed in the liquid fluxes. Reactions in the Al-B/KF-AlF 3 system involve the formation of metastable AlB 12 at the metal/flux interface. At high KBF 4 levels in the flux, the AlB 12 is dispersed in the flux and also at low KBF 4 levels in the metal. Reactions in the Al-Ti-B/KF-AlF 3 system involve the formation of TiB 2 , which may be dispersed in either the metal or the flux depending upon the composition of the flux. The results obtained for the Al-Ti-B/NaF-AlF 3 and Al-Zr-B/KF-AlF 3 systems were similar to those observed for the Al-Ti-B/KF-AlF 3 system

  20. Al-Si/Al2O3 in situ composite prepared by displacement reaction of CuO/Al system

    Directory of Open Access Journals (Sweden)

    Zhang Jing

    2010-02-01

    Full Text Available Al2O3 particle-reinforced ZL109 composite was prepared by in situ reaction between CuO and Al. The microstructure was observed by means of OM, SEM and TEM. The Al2O3 particles in sub-micron sizes distribute uniformly in the matrix, and the Cu displaced from the in situ reaction forms net-like alloy phases with other alloy elements. The hardness and the tensile strength of the composites at room temperature have a slight increase as compared to that of the matrix. However, the tensile strength at 350 ℃ has reached 90.23 MPa, or 16.92 MPa higher than that of the matrix. The mechanism of the reaction in the CuO/Al system was studied by using of differential scanning calorimetry(DSC and thermodynamic calculation. The reaction between CuO and Al involves two steps. First, CuO reacts with Al to form Cu2O and Al2O3 at the melting temperature of the matrix alloy, and second, Cu2O reacts with Al to form Cu and Al2O3 at a higher temperature. At ZL109 casting temperature of 750–780 ℃, the second step can also take place because of the effect of exothermic reaction of the first step.

  1. Plastic deformation of Al13Fe4 particles in Al-Al13Fe4 by high-speed compression

    International Nuclear Information System (INIS)

    Yoneyama, N.; Mizoguchi, K.; Kumai, S.; Sato, A.; Kiritani, M.

    2003-01-01

    Spray-formed Al-Fe alloys having undergone high-speed deformation were examined under a high-voltage electron microscope. Two types of specimens were examined; one containing fine Al 13 Fe 4 particles, and the other containing large particles. In the former specimen, deformation is found to proceed in three patterns, depending on specimen thickness and strain rate: (1) without deformation of the Al 13 Fe 4 ; (2) breaking of the Al 13 Fe 4 ; or (3) melting of the Al 13 Fe 4 . Local melting is found to alter some of the Al 13 Fe 4 particles, to impart five-fold symmetry in diffraction or an amorphous structure. In the latter specimen, introduction of glide dislocations enabled us to determine a shear system in the mc102 monoclinic c2/m crystal of Al 13 Fe 4 . On the bases of these observations, the mechanism of high-speed deformation is discussed while taking into account the highly stressed and/or heated states of Al 13 Fe 4 embedded in Al matrix

  2. Entrevista al narrador Tommaso Pincio

    Directory of Open Access Journals (Sweden)

    Franco Zangrilli

    2016-07-01

    Full Text Available El autor Tommaso Pincio, seudónimo di Marco Colapietro (Roma, 1963, es sin lugar a dudas uno de los narradores de mayor proyección en el panorama literario de los últimos tiempos. Iniciada su carrera en 1999 con M., ha publicado títulos como Lo spazio sfinito (2000 y Un amore dell'altro mondo (2002, en el que narra la vida de Kurt Cobain, líder del grupo Nirvana, a través de la visión de un amigo imaginario. A estas dos novelas siguieron La ragazza che non era lei (2005, Gli alieni (2006 o Cinacittà. Memorie del mio delitto efferato (2008, ambientada en una Roma colonizada por los chinos y abandonada por los mismos romanos a causa de problemas medioambientales. Títulos como L'hotel a zero stelle (2011, un ensayo autobiográfico en el que plantea diálogos ficticios con algunos de los grandes nombres de la literatura o la más reciente Panorama (2015, le han hecho valerse un hueco provilegiado entre los nuevos narradores surgidos en estas primeras décadas de siglo. Justamente la publicación de esta última novela, Panorama, ha servido de excusa al profesor Franco Zangrilli, gran conocedor de su obra, a plantearle algunas preguntas sobre temas clave de su producción.

  3. Comentario al libro: ACADEMIA MUTISIANA

    Directory of Open Access Journals (Sweden)

    Efraím Otero Ruiz

    2012-04-01

    Full Text Available Por tercera vez en un quinquenio ocupo este podio para ocuparme de uno de los libros del grupo de inmunogenética (o de anti-inmunohistoria, diría yo de la Universidad Javeriana, esta vez enriquecido con la presencia del P. Ortiz Valdivieso, orquídeologo y mutisiólogo y del Dr. Uribe Angel notable historiador educativo, y presentado admirablemente por el P. Durán Casas, Vicerrector Académico de la Universidad Javeriana. En el prólogo, citando desde Sarton y Ziman en los 70s. hasta Mauro Torres en el 2011 afirmo que, aunque suene extraño, parece como si las Academias florecieran entre las guerras. Tal sucedió con la de Platón, “la máxima institución de enseñanza superior surgida en el mundo”, -al decir de Sartonenmarcada desde las guerras del Peloponeso, hasta el final de la dominación espartana de Atenas en el siglo IV antes de Cristo. Según dichos autores, las Academias han simbolizado una manera de continuar la vida espiritual entre uno y otro conflicto.

  4. The most commonly used drugs during early childhood and their relationship to the incisor molar hypomineralization syndrome : experimental study in mice= Relación entre los fármacos de uso más frecuente en la primera infancia y la aparición del síndrome de hipomineralización incisivo-molar: estudio experimental en ratones

    OpenAIRE

    Serna Muñoz, Clara

    2017-01-01

    El término hipomineralización incisivo molar (MIH) fue descrito por primera vez por Weerheijm, Jälevik y Alaluusua (2001), y definitivamente adoptado por la comunidad dental internacional como resultado de un consenso tras varias discusiones sobre un defecto del desarrollo del esmalte en el Congreso de la Academia Europea de Odontopediatría celebrado en Atenas, en 2003 (Weerheijm et al., 2003). La MIH es un defecto cualitativo del esmalte, que afecta a los primeros molares y los incisivos per...

  5. Sobrevida a 5 años en relación al tipo histológico de cáncer de estómago.

    Directory of Open Access Journals (Sweden)

    Juan Diaz Placencia

    1995-10-01

    Full Text Available Objetivo: Comparar parámetros clinico-patológicos, quirúrgicos y datos de sobrevida actuarial a 5 años en pacientes con cáncer de estómago sometidos a gastrectomía. Material y métodos: Es un estudio retrospectivo realizado en el Hospital de Belén del 1º de enero de 1966 al 31 de diciembre de 1991. Fueron incluidos 69 pacientes con tipo histológico intestinal y 68 de tipo difuso. El estadío clínico se determinó según la clasificación TNM de la UICC. Resultados: El tipo histológico intestinal fue mas frecuente que el difuso en los pacientes mayores de 40 años (p 5 cm. y la sobrevida de 5 años después de gastrectomía es similar a la del tipo intestinal. (Rev Med Hered 1995; 6: 175-181.

  6. Ausentismo y producción: el esquema de ajuste de primas por siniestralidad observada aplicado al seguro de salud en Francia

    Directory of Open Access Journals (Sweden)

    Sébastien Ménard

    2018-01-01

    Full Text Available En este trabajo se analizan los efectos de la introducción de un esquema de ajuste (experience rating en las contribuciones patronales al seguro de salud. Para ello, se desarrolla un modelo de búsqueda y emparejamiento en un mercado de trabajo segmentado. En el segmento donde los empleos son más riesgosos, las ausencias por enfermedad son más frecuentes y la producción media es más baja. El modelo es calibrado para Francia y los resultados de las simulaciones muestran que la introducción de este esquema mejora levemente la producción y el empleo. En términos cuantitativos, una variación del 1 % en la tasa de experience rating induce una reducción de 0,48 % en la duración del desempleo y de 1,07 % en los días de ausencia, así como un aumento de 0,1 % en la producción. Finalmente, se encuentra que esta política conduce también a un desempeño económico ligeramente mejor que la privatización del seguro de salud

  7. Caracterización de la esclerosis tuberosa en pacientes que consultan al Hospital Universitario San Vicente de Paúl, Medellín, Colombia

    Directory of Open Access Journals (Sweden)

    Dagoberto Nicanor Cabrera Hémer

    2008-11-01

    Full Text Available La esclerosis tuberosa (ET es una enfermedad autosómica dominante, que afecta muchos sistemas y cursa con diversas manifestaciones clínicas, entre ellas epilepsia, retardo mental y lesiones cutáneas. Se hizo un estudio retrospectivo para contribuir a la caracterización de la esclerosis tuberosa en Medellín, Colombia. Se revisaron 21 historias, 62% mujeres y 38% hombres; la edad media al momento del diagnóstico fue 23 meses, todos los pacientes tenían epilepsia y lesiones cutáneas, las crisis más frecuentes fueron las parciales con generalización secundaria (66%, 47% tuvieron espasmos infantiles, la mayoría presentaron dos o más tipos de crisis (90%. Todos los pacientes recibieron anticonvulsivantes, los más frecuentemente utilizados fueron: fenobarbital, ácido valproico, vigabatrina, carbamazepina y clonazepam. En general, la mayoría de los pacientes requirieron varios medicamentos durante la evolución de su enfermedad y los pocos que lograron un adecuado control de la epilepsia, lo hicieron con anticonvulsivantes de primera generación. CONCLUSIÓN:las características de nuestra serie son similares a las reportadas en la literatura mundial. Los antiepilépticos de primera generación siguen siendo la principal herramienta terapéutica para el tratamiento inicial de los pacientes Medellín.

  8. Imágenes poéticas en textos de viajes románticos al Sur de España

    Directory of Open Access Journals (Sweden)

    Romero Tobar, Leonardo

    2011-06-01

    Full Text Available The poetical image reported to the visited places is an artistic device that makes travel books a «literary piece of work». In this article I offer an anthology of the images about Andalucía given by their visitors in the XIXth Century. The most common image is about the bipolarity North/ South, but there are and we can read many other images: the brilliant metaphors used to described Cádiz as a «sea-shell» or a «ship» and specially for describing the charm of women there.Una marca artística que otorga a los relatos de viajes la condición de «género literario» es el empleo de imágenes poéticas que el viajero asocia con aspectos de los lugares visitados. Estas páginas dan una selección de imágenes empleadas por viajeros a Andalucía durante el siglo XIX. La imagen más frecuente es la que remite al tópico cultural troquelado sobre la bipolaridad Norte/Sur; también se recuerdan otras metáforas con las que fue descrito Cádiz en sus connotaciones de paisaje rodeado de mar y belleza luminosa que fue trasladada a la belleza de sus mujeres.

  9. Variantes alélicas de CYP2D6: *4, *6 y *10 en una muestra de residentes del estado Aragua, Venezuela

    Directory of Open Access Journals (Sweden)

    Carlos Flores-Angulo

    Full Text Available El objetivo del estudio fue determinar la frecuencia de las variantes del gen CYP2D6: *4, *6 y *10 y predecir el fenotipo metabolizador en una muestra de 145 individuos no consanguíneos, aparentemente sanos, residentes del estado Aragua, Venezuela. Los genotipos fueron determinados mediante ensayos de reacción en cadena de la polimerasa seguidos de digestión con endonucleasas de restricción. La predicción del fenotipo metabolizador se realizó con base al sistema Activity score. Las frecuencias de CYP2D6 *4, *6 y *10 fueron de 14,5%, 0,3% y 1%, respectivamente; un porcentaje significativo de individuos fueron categorizados como metabolizador rápido heterocigoto/metabolizador intermedio (23,5% y metabolizador lento (4,1%. Esta información tiene impacto clínico potencial, porque CYP2D6 interviene en el metabolismo de fármacos de prescripción frecuente como: carvedilol, captopril, cloroquina, codeína, fluoxetina, fluvastatina, haloperidol, idarrubicina, indinavir, imatinib, loperamida, nifedipina, ondansetrón y tamoxifeno

  10. Relación de la percepción del acudiente del menor sobre la calidad del servicio asistencial de vacunación y su adherencia al programa ampliado de inmunización

    Directory of Open Access Journals (Sweden)

    William de Jesús Atehortua-Puerta

    2015-06-01

    Full Text Available Objetivo: determinar la relación de la percepción del acudiente del menor sobre la calidad del servicio asistencial de vacunación y su adherencia al Programa Ampliado de Inmunización en una institución de salud en Cúcuta. Materiales y Métodos: estudio descriptivo, corte transversal, con una muestra de 334 niños. Se aplicó el cuestionario de la Escala Servqual, evaluando las dimensiones de elementos tangibles: fiabilidad, capacidad de respuesta, seguridad y empatía. Se utilizó la escala de Linkert donde 1 es la menor calificación y 5 la mayor calificación. Resultados: los acudientes tienen una percepción de indiferencia del 55.7% e insatisfacción del 34.4% en la dimensión tangible porque en oportunidades carecen de información. Menor es el nivel de satisfacción en la fiabilidad con el 24.3% expresaron sentirse muy satisfechos con los tiempos de espera prolongados para el acceso al servicio. Mientras en la capacidad de respuesta, el 6.9% de los acudientes manifestaron estar satisfechos, opinión más frecuente en acudientes de niños entre los 2 y 5 años. Igualmente frente a la seguridad, la mayoría expresan un grado de satisfacción neutro, siendo más frecuentes en acudientes de menores de 1 año y medio de edad 61.2%. Para la empatía, se constata un nivel alto de insatisfacción donde solo el 5.1% se considera satisfecho frente a un 43.1% de insatisfacción. Conclusión: los usuarios se encuentran vinculados al servicio de vacunación por demanda y necesidad pero es evidente que se debe fortalecer todas las dimensiones de forma integral.

  11. Structural features in Ni-Al alloys

    International Nuclear Information System (INIS)

    Abylkalykova, R.B.; Kveglis, L.I.; Rakhimova, U.A.; Nasokhova, Sh.B.; Tazhibaeva, G.B.

    2007-01-01

    Purpose of the work is study of structural transformations under diverse memory effect in Ni-Al alloys. Examination were conducted in following composition samples: Ni -75 at.% and Al - 25 at.%. The work is devoted to clarification reasons both formation atom-ordered structures in inter-grain boundaries of bulk samples under temperature action and static load. Revealed inter-grain inter-boundary layers in Ni-Al alloy both bulk and surface state have complicated structure

  12. Fabrication of AlN-TiC/Al composites by gas injection processing

    Institute of Scientific and Technical Information of China (English)

    YU Huashun; CHEN Hongmei; MA Rendian; MIN Guanghui

    2006-01-01

    The fabrication of AlN-TiC/Al composites by carbon-and nitrogen-containing gas injection into Al-Mg-Ti melts was studied. It was shown that AlN and TiC particles could be formed by the in situ reaction of mixture gas (N2+C2H2+NH3) with Al-Mg-Ti melts. The condition for the formation of AlN was that the treatment temperature must be higher than 1373 K, and the amounts of AlN and TiC increased with the increase of the treatment temperature and the gas injection time.It was considered that AlN was formed by the direct reaction of Al with nitrogen-containing gas at the interface of the gas bubble and the melt. However, the mechanism of TiC formation is a combination mechanism of solution-precipitation and solid-liquid reaction.

  13. Electrodeposition of Al from a 1-butylpyrrolidine-AlCl3 ionic liquid

    Directory of Open Access Journals (Sweden)

    Giridhar Pulletikurthi

    2015-12-01

    Full Text Available The addition of 1-butylpyrrolidine to AlCl3 results in the formation of an electrolyte that is suited to Al deposition. The feasibility of electrodepositing Al from the synthesized electrolyte was investigated. Several compositions of AlCl3 and 1-butylpyrrolidine were prepared for this purpose. These mixtures show a different phase behavior at various compositions of AlCl3 and 1-butylpyrrolidine. IR, Raman and NMR spectroscopy were employed to characterize the synthesized liquids. Among the prepared compositions, 1:1.2 mol ratio of 1-butylpyrrolidine:AlCl3 and the upper phase of 1:1.3 mol ratio of 1-butylpyrrolidine:AlCl3 were found to be suitable for Al electrodeposition at room temperature (RT. Uniform and thick (~µm thick layers of Al were obtained on copper at RT. Al deposition occured from the cationic species of AlCl3−xLy+ (where x≤2, y=1–2, and L=1-butylpyrrolidine in this electrolyte. This behavior is contrary to the well investigated classic AlCl3 based ionic liquids, where the deposition of Al occurs mainly from anionic Al2Cl7− ions.

  14. Patrones de prescripción de antipsicóticos en pacientes afiliados al Sistema General de Seguridad Social en Salud de Colombia

    Directory of Open Access Journals (Sweden)

    Jorge E. Machado-Alba

    2013-09-01

    Full Text Available Introducción. La esquizofrenia altera la percepción del individuo, el pensamiento, el afecto y el comportamiento. El tratamiento farmacológico puede mejorar estas manifestaciones. Objetivo. Determinar los patrones de prescripción de medicamentos antipsicóticos en un grupo de pacientes afilados al Sistema General de Seguridad Social en Salud de Colombia. Materiales y métodos. Se llevó a cabo un estudio descriptivo sobre base de datos de 6,2 millones de personas. Se seleccionaron los pacientes medicados con antipsicóticos, de ambos sexos, todas las edades, con tratamiento continuo de marzo a junio de 2012, y residentes de 57 ciudades colombianas. Se diseñó una base de datos sobre consumo de medicamentos, obtenidos por la empresa que dispensa dichos fármacos. Resultados. Se estudiaron 3.075 pacientes con edad promedio de 55,8±21,5 años; 50,3 % eran mujeres; 81,9 % recibían monoterapia y, 18,1 %, dos o más antipsicóticos. El orden de prescripción fue: atípicos, 77,1 %, y clásicos, 31,9 %. Los medicamentos más utilizados fueron: quetiapina (30,3 %, clozapina (23,7 %, levomepropamiza (18,4 % y risperidona (14,9 %. Las combinaciones más frecuentes fueron: haloperidol más levomepromazina (n=67; 12,1 % de las asociaciones, clozapina más pipotiazina (n=54;9,7 % clozapina más risperidona (n=45; 8,1 %, quetiapina más levomepromazina (n=40; 7,2 %. Los medicamentos prescritos concomitantemente más frecuentes fueron: antidepresivos (n=998; 32,5%; ansiolíticos (n=799; 26,0 %; hipolipemiantes (n=672; 21,9 %; antiparkinsonianos (341; 11,1 % yantidiabéticos (n=327; 10,6 %. Conclusiones. Predominan los hábitos de prescripción de medicamentos de alto valor terapéutico, principalmente en la monoterapia antipsicótica. En la mayoría, se emplean en dosis superiores a las recomendadas. Se plantea la necesidad de diseñar estrategias educativas para corregir algunos hábitos de prescripción e investigaciones que evalúen la efectividad

  15. Superbend era begins swiftly at the ALS

    Energy Technology Data Exchange (ETDEWEB)

    Robinson, Art; Tamura, Lori

    2001-11-29

    The successful installation and commissioning of high-field superconducting bend magnets (superbends) in three curved sectors of ALS storage ring was the first time the magnet lattice of an operating synchrotron light source has been retrofitted in this fundamental way. As a result, the ALS now offers an expanded spectral range well into the hard x-ray region without compromising either the number of undulators or their high brightness in the soft x-ray region for which the ALS design was originally optimized. In sum, when the superbend-enhanced ALS started up for user operations in October 2001, it marked the beginning of a new era in its history.

  16. Referral bias in ALS epidemiological studies.

    Science.gov (United States)

    Logroscino, Giancarlo; Marin, Benoit; Piccininni, Marco; Arcuti, Simona; Chiò, Adriano; Hardiman, Orla; Rooney, James; Zoccolella, Stefano; Couratier, Philippe; Preux, Pierre-Marie; Beghi, Ettore

    2018-01-01

    Despite concerns about the representativeness of patients from ALS tertiary centers as compared to the ALS general population, the extent of referral bias in clinical studies remains largely unknown. Using data from EURALS consortium we aimed to assess nature, extent and impact of referral bias. Four European ALS population-based registries located in Ireland, Piedmont, Puglia, Italy, and Limousin, France, covering 50 million person-years, participated. Demographic and clinic characteristics of ALS patients diagnosed in tertiary referral centers were contrasted with the whole ALS populations enrolled in registries in the same geographical areas. Patients referred to ALS centers were younger (with difference ranging from 1.1 years to 2.4 years), less likely to present a bulbar onset, with a higher proportion of familial antecedents and a longer survival (ranging from 11% to 15%) when compared to the entire ALS population in the same geographic area. A trend for referral bias is present in cohorts drawn from ALS referral centers. The magnitude of the possible referral bias in a particular tertiary center can be estimated through a comparison with ALS patients drawn from registry in the same geographic area. Studies based on clinical cohorts should be cautiously interpreted. The presence of a registry in the same area may improve the complete ascertainment in the referral center.

  17. Decoding ALS: From Genes to Mechanism

    Science.gov (United States)

    Taylor, J. Paul; Brown, Robert H.; Cleveland, Don W.

    2017-01-01

    Preface Amyotrophic lateral sclerosis (ALS) is a progressive and uniformly fatal neurodegenerative disease. A plethora of genetic factors underlying ALS have now been identified that drive motor neuron degeneration, increase susceptibility to the disease, or influence the rate of progression. Emerging themes include dysfunction in RNA metabolism and protein homeostasis, with specific defects in nucleocytoplasmic trafficking, induction of endoplasmic reticulum stress, and impaired dynamics of ribonucleoprotein bodies such as RNA granules that assemble through the process of liquid-liquid phase separation. Extraordinary recent progress in understanding the biology of ALS provides new grounds for optimism that meaningful therapies for ALS will be identified. PMID:27830784

  18. Genetics of Familial and Sporadic ALS

    Science.gov (United States)

    2018-03-27

    Amyotrophic Lateral Sclerosis (ALS); Familial Amyotrophic Lateral Sclerosis; Amyotrophic Lateral Sclerosis With Frontotemporal Dementia; Lou Gehrig's Disease; Motor Neuron Disease; Primary Lateral Sclerosis

  19. RESULTADOS DEL MANEJO NUTRICIONAL EN UNA FAMILIA CON FENILCETONURIA, POSTERIOR AL DIAGNÓSTICO GENÉTICO: DISERTACIONES EN TORNO AL SEGUIMIENTO Y ADHERENCIA AL TRATAMIENTO.

    Directory of Open Access Journals (Sweden)

    Marta L. Tamayo F.

    2015-12-01

    Full Text Available

    Introducción: Aunque ciertamente la Fenilcetonuria (PKU no sea un desorden metabólico común en Colombia, médicos generales, pediatras y genetistas deben estar alerta de su presencia y, deben propender por un diagnóstico completo que permita iniciar un manejo nutricional adecuado temprano. De manera que no sólo es importante el diagnóstico, sino la asesoría genética apropiada, el manejo y seguimiento. Sólo de esta manera se logran minimizar las secuelas y en especial, el daño neurológico propio de esta alteración metabólica, dado que es una de las pocas patologías genéticas en la que es posible ofrecer algún tipo de manejo que evite daños devastadores y ofrezca así un mejor pronóstico. Es igualmente importante estar atentos a los procesos del sistema de salud colombiano, que impone trabas y demoras en los manejos y tratamientos de estas enfermedades poco frecuentes, pues son causa de baja adherencia, suspensión de tratamientos y empeoramiento clínico de nuestros pacientes, con deterioro irreversible muy negativo en estas familias afectadas vulnerables e indefensas.

    Objetivo: En este trabajo se realizó seguimiento durante un año y medio de evolución bajo manejo nutricional a una familia colombiana con diagnóstico clínico, bioquímico y molecular de Fenilcetonuria (PKU.

    Materiales y Métodos: A una familia colombiana con diagnóstico de Fenilcetonuria, con 4 individuos afectados, se le hizo el seguimiento clínico de su evolución durante un año y medio, mientras recibían el tratamiento consistente en el manejo nutricional adecuado para su enfermedad de base, la ingesta de preparados de fórmulas comerciales adecuadas y seguimiento de pruebas bioquímicas y de evolución clínica con o sin tratamiento.

    Resultados: Se presentan los resultados de la evolución clínica bajo tratamiento con manejo nutricional adecuado durante un a

  20. PEMAHAMAN HADITS TARBAWI BURHAN AL ISLAM AL ZARNUJI DALAM KITAB TA’LIM AL MUTA’ALLIM

    Directory of Open Access Journals (Sweden)

    Benny Afwadzi

    2017-01-01

    Full Text Available This paper explores the understanding of tarbawi (education hadith from one of the major influential clerics in the Islamic educational system, especially in pesantren. He is Burhan al Islam al Zarnuji with his landmark book Ta’lim al Muta’allim. The conclusion that can be drawn is that al Zarnuji has shades of sufistical view in understanding tarbawi hadith. This can be seen in his understanding of hadith on obligation to seek knowledge (thalab al ilmi faridhatun ‘ala kulli muslimin wa muslimatin, which is interpreted as ilm al hal, the science concerning the condition of the human religious or simplistically said as the religious sciences; and the hadith of intention of studying (innama al a’malu bi al niyyat with the intention for the sake of the hereafter and religion, not mundane. Such an understanding is not something taken for granted, but it can be reinterpreted and perfected in accordance with the spirit of the times of context.

  1. The code of light: al-ghazali and al-suhrawardi

    OpenAIRE

    Gediminaitė, Barbora

    2017-01-01

    The Code of Light: Al-Ghazali and Al-Suhrawardi The Bachelor’s thesis The Code of Light in Islam: al-Ghazali and al-Suhrawardi presents a comparative study of light. The study analyses the philosophical systems of al-Ghazali and al-Suhrawardi through the reconstruction of the image of light and its operation principles. The main subject of the thesis are the attributes of light. The main problem of the research is the semantics and contextuality of light in Islamic theology and philosophy. Th...

  2. Formation of AlFeSi phase in AlSi12 alloy with Ce addition

    Directory of Open Access Journals (Sweden)

    S. Kores

    2012-04-01

    Full Text Available The influence of cerium addition on the solidification sequence and microstructure constituents of the Al-Si alloys with 12,6 mass % Si was examined. The solidification was analyzed by a simple thermal analysis. The microstructures were examined with conventional light and scanning electron microscopy. Ternary AlSiCe phase was formed in the Al-Si alloys with added cerium during the solidification process. AlSiCe and β-AlFeSi phases solidified together in the region that solidified the last. Cerium addition influenced on the morphology of the α-AlFeSi phase solidification.

  3. Valoración de la atención de urgencias al paciente con trauma grave

    Directory of Open Access Journals (Sweden)

    Gabriel Rodríguez Suárez

    2002-12-01

    Full Text Available Con el objetivo de determinar la calidad de la atención de urgencias a los pacientes que ingresaron en el Hospital Universitario "Doctor Gustavo Aldereguía Lima" de Cienfuegos, con el diagnóstico de trauma grave, se realizó un estudio descriptivo correlacionar. Se incluyeron 95 pacientes admitidos en unidades de cuidados progresivos durante el período de estudio, siguiendo el protocolo general de atención al trauma vigente en el Servicio. La edad media total de los lesionados fue de 39 años, con predominio del sexo masculino. El traumatismo craneoencefálico fue el más frecuente y de mayor mortalidad. Un análisis multivariado demostró que cerca del 50 % de los fallecimientos estuvo relacionado con la severidad de las lesiones, el tipo de trasporte utilizado y la demora en recibir los cuidados definitivosIn order to determine the quality of the emergency care received by the patients that were admitted at Doctor Gustavo Aldereguía Lima Teaching Hospital of Cienfuegos with the diagnosis of severe trauma, a correlative descriptive study was conducted. 95 patients who were admitted in progressive care units during the studied period were included, following the general protocol of trauma care that is in force at the Service. Total average age of the injured was 39. A predominance of males was observed. The cranioencephalic trauma was the most common and that with the highest mortality. A multivariate analysis showed that at about 50 % of the deaths were connected with the severity of the injuries, the type of transportation used and the delay in receiving the definitive care

  4. Desórdenes lipídicos: una puesta al día Lipid disorders: an updating

    Directory of Open Access Journals (Sweden)

    Mayra Sánchez León

    2003-04-01

    Full Text Available Las dislipidemias son desórdenes metabólicos frecuentes, que se constituyen en un importante factor de riesgo de enfermedades, las cuales tienen como sustrato anatómico la aterosclerosis. El efecto particularmente nocivo de los niveles elevados de lípidos en el plasma está bien documentado en relación con la aparición y progresión de la enfermedad coronaria (prevención primaria y secundaria. Su manejo adecuado presupone el conocimiento de los niveles de colesterol de lipoproteína de baja densidad (C-LDL deseados, de acuerdo con la estratificación del riesgo cardiovascular del paciente. Se recomienda siempre en su tratamiento, independientemente de la categoría de riesgo, los cambios terapéuticos en el estilo de vida, y se reserva el tratamiento farmacológico para aquellos pacientes que con lo anterior no lograron las metas propuestas y para los de alto riesgo. Con la presente revisión pretendemos poner al día los principales aspectos relacionados con su clasificación, diagnóstico y tratamiento.Dyslipidemias are frequent metabolic disorders that are an important risk factor for diseases and have atherosclerosis as anatomical substrate. The particularly negative effect of high plasma lipid levels is well documented as to the occurrence and progression of the coronary disease (primary and secondary prevention. The adequate management entails knowledge of the desirable low-density lipoprotein cholesterol levels according to the cardiovascular risk stratification of the patient. Regardless of the risk category, the treatment recommends therapeutic changes in the lifestyle whereas drug treatment is reserved for those patients who did not succeed in attaining the proposed goals and for high-risk patients. The present review intends to update the fundamental aspects related to classification, diagnosis and treatment of dyslipidemias.

  5. Tadris Al Mufradat Li Tathbiq Maharah Al Kalam Fi Madrasah Al Muallimin Al Islamiyyah Li Mahad Bait Al Arqam Balong Jember

    Directory of Open Access Journals (Sweden)

    Muhammad Ardy Zaini

    2017-06-01

    Full Text Available There are four  skills in teaching Arabic. Ie listening, speaking, reading, and writing. Among these four, speaking considered one of the most important objectives of learning foreign language. In order to speak properly, one must know the vocabulary and apply it in a sentence. The aims of this research is to describe the teaching of vocabulary to apply the speaking skill in the school of Islamic teachers in the Institute of Bait al Arqom Balong Jember. This study used qualitative approach. The data collection was taken trough observation, personal interview, history and documentation. The teaching of vocabulary to apply the speaking skill at the Islamic Teachers' School at the Institute of Bait Al Arqam Balong Jember has gone well in terms of planning (general objectives and specific objectives, implementation (materials, use of the teaching method and teaching aids, and evaluation (assessment and evaluation. This teaching is to apply the speaking skill in terms of conversation or dialogue and lecture.

  6. Kritik al-Ghazali terhadap Kekekalan Alam

    Directory of Open Access Journals (Sweden)

    Sahidi Mustafa

    2015-09-01

    Full Text Available The concept of the creation of universe offered by Neo-Platonism philosopher such as al-Kindi, al-Farabi, and Ibnu Sina are philosophical concept existed and came as an early moment of development of Islamic philosophy interrelated to God, ultimately about his Existence and Characteristics. One of the topics is how God created the universe. According to al-Farabi and Ibnu Sina, God created this universe by way of emanation in order to prevent Himself from the new attitudes. Consequently, universe has eternal feature (qadim as God as well, in the case of everything overflowed from qadim is also qadim. Al-Ghazali refuted this theory because it contradicted with al Qur’an’s thought which clearly explained that God created the entire universe. The universe should not qadim and it means that God existed in the first, and then created universe later as we know today. On the contrary, in the view of Muslim philosopher, the universe should be qadim because God created it from all eternity. For them, it is impossible that God existed by Himself without any creation before. God, according to them is impossible to be changed, so that is impossible as well if God changed from did not create yet before and then creates. Al-Ghazali persistently opposed the concept of eternity. Al Ghazali saw if this universe is qadim so it is impossible that universe created by God. The concept of qadim will led to the conclusion that universe born by itself, it was not created by God. This critique has been written by al-Ghazali in Tahafut al-Falasifah. This paper will present the concept of eternity which was discussed by al-Farabi and Ibn Sina and al Ghazali’s critique toward it as well.

  7. ALS and other motor neuron diseases.

    Science.gov (United States)

    Tiryaki, Ezgi; Horak, Holli A

    2014-10-01

    This review describes the most common motor neuron disease, ALS. It discusses the diagnosis and evaluation of ALS and the current understanding of its pathophysiology, including new genetic underpinnings of the disease. This article also covers other motor neuron diseases, reviews how to distinguish them from ALS, and discusses their pathophysiology. In this article, the spectrum of cognitive involvement in ALS, new concepts about protein synthesis pathology in the etiology of ALS, and new genetic associations will be covered. This concept has changed over the past 3 to 4 years with the discovery of new genes and genetic processes that may trigger the disease. As of 2014, two-thirds of familial ALS and 10% of sporadic ALS can be explained by genetics. TAR DNA binding protein 43 kDa (TDP-43), for instance, has been shown to cause frontotemporal dementia as well as some cases of familial ALS, and is associated with frontotemporal dysfunction in ALS. The anterior horn cells control all voluntary movement: motor activity, respiratory, speech, and swallowing functions are dependent upon signals from the anterior horn cells. Diseases that damage the anterior horn cells, therefore, have a profound impact. Symptoms of anterior horn cell loss (weakness, falling, choking) lead patients to seek medical attention. Neurologists are the most likely practitioners to recognize and diagnose damage or loss of anterior horn cells. ALS, the prototypical motor neuron disease, demonstrates the impact of this class of disorders. ALS and other motor neuron diseases can represent diagnostic challenges. Neurologists are often called upon to serve as a "medical home" for these patients: coordinating care, arranging for durable medical equipment, and leading discussions about end-of-life care with patients and caregivers. It is important for neurologists to be able to identify motor neuron diseases and to evaluate and treat patients affected by them.

  8. Optical phonon scattering on electronic mobility in Al2O3/AlGaN/AlN/GaN heterostructures

    Science.gov (United States)

    Zhou, X. J.; Qu, Y.; Ban, S. L.; Wang, Z. P.

    2017-12-01

    Considering the built-in electric fields and the two-mode property of transverse optical phonons in AlGaN material, the electronic eigen-energies and wave functions are obtained by solving Schrödinger equation with the finite difference method. The dispersion relations and potentials of the optical phonons are given by the transfer matrix method. The mobility of the two dimensional electron gas influenced by the optical phonons in Al2O3/AlGaN/AlN/GaN heterostructures is investigated based on the theory of Lei-Ting force balance equation. It is found that the scattering from the half-space phonons is the main factor affecting the electronic mobility, and the influence of the other phonons can be ignored. The results show that the mobility decreases with increasing the thicknesses of Al2O3 and AlN layers, but there is no definite relationship between the mobility and the thickness of AlGaN barrier. The mobility is obviously reduced by increasing Al component in AlGaN crystal to show that the effect of ternary mixed crystals is important. It is also found that the mobility increases first and then decreases as the increment of the fixed charges, but decreases always with increasing temperature. The heterostructures constructed here can be good candidates as metal-oxide-semiconductor high-electron-mobility-transistors since they have higher electronic mobility due to the influence from interface phonons weakened by the AlN interlayer.

  9. Experimental investigation of the Al-Y phase diagram

    International Nuclear Information System (INIS)

    Liu Shuhong; Du Yong; Xu Honghui; He Cuiyun; Schuster, Julius C.

    2006-01-01

    The Al-Y phase diagram has been reinvestigated with 16 key alloys over its whole composition range by means of differential thermal analysis, X-ray diffraction, optical microscopy, and scanning electron microscopy with energy dispersive X-ray techniques. The existence of five intermetallic phases, Al 3 Y, Al 2 Y, AlY, Al 2 Y 3 , and AlY 2 , has been confirmed. Al 2 Y and Al 2 Y 3 melt congruently at 1490 ± 2 and 1105 ± 2 deg. C, respectively. Al 3 Y, AlY, and AlY 2 are formed via the peritectic reactions L + Al 2 Y ↔ Al 3 Y at 980 ± 2 deg. C, L + Al 2 Y ↔ AlY at 1138 ± 2 deg. C, and L + Al 2 Y 3 ↔ AlY 2 at 977 ± 2 deg. C, respectively. Three eutectic reactions L ↔ (Al) + Al 3 Y at 637 ± 2 deg. C, L ↔ AlY + Al 2 Y 3 at 1081 ± 2 deg. C, and L ↔ AlY 2 + (αY) at 955 ± 2 deg. C , are observed. The previously reported Al 3 Y 5 , AlY 3 compounds were not found. A revised Al-Y phase diagram is presented mainly based on the present experimental results

  10. La mortalidad infantil en Santa Fe, Argentina (2007-2011. Un aporte al monitoreo de los derechos de los niños

    Directory of Open Access Journals (Sweden)

    Ana Cecilia Augsburger

    2015-07-01

    Full Text Available La mortalidad infantil en Santa Fe tuvo un comportamiento similar al de Argentina, acompañando el descenso que se presentó para el país, aunque siempre con valores inferiores al indicador nacional. Pese a ello, mereció particular preocupación la elevada proporción de defunciones cuyas causas se consideran reducibles con valores históricos superiores al 50%. El establecimiento de las metas internacionales conocidas como Objetivos de Desarrollo del Milenio, que bregó por la protección de los derechos de la niñez, contó con la ratificación nacional al tiempo que la provincia se comprometió con estos fijándolos como política socio-sanitaria estratégica. El estudio construyó el perfil de la mortalidad infantil de la provincia de Santa Fe durante el quinquenio 2007-2011. Se realizó un estudio epidemiológico descriptivo y transversal. La población incluyó las defunciones en menores de un año del período estudiado. Se analizó su distribución según la edad al morir, peso al nacer y lugar de ocurrencia, causas de muerte y criterios de reducibilidad. Ocurrieron 2.904 muertes de niños, obteniendo una tasa del 10,9‰, que mantuvo el comportamiento descendente previo. Las muertes neonatales duplicaron la mortalidad posneonatal y se concentraron en la primera semana de vida. Las causas más frecuentes estuvieron asociadas a los problemas perinatales. El mayor riesgo de morir fue para los niños de menos de 1.000 gramos o inmadurez extrema. El 60% de los eventos podría haberse evitado. La persistencia de muertes consideradas reducibles debería estimular para incentivar estrategias de intervenciones sociales y sanitarias más equitativas y de protección de la infancia.

  11. La mortalidad infantil en Santa Fe, Argentina (2007-2011. Un aporte al monitoreo de los derechos de los niños

    Directory of Open Access Journals (Sweden)

    Ana Cecilia Augsburger

    2015-01-01

    Full Text Available La mortalidad infantil en Santa Fe tuvo un comportamiento similar al de Argentina, acompañando el descenso que se presentó para el país, aunque siempre con valores inferiores al indicador nacional. Pese a ello, mereció particular preocupación la elevada proporción de defunciones cuyas causas se consideran reducibles con valores históricos superiores al 50%. El establecimiento de las metas internacionales conocidas como Objetivos de Desarrollo del Milenio, que bregó por la protección de los derechos de la niñez, contó con la ratificación nacional al tiempo que la provincia se comprometió con estos fijándolos como política socio-sanitaria estratégica. El estudio construyó el perfil de la mortalidad infantil de la provincia de Santa Fe durante el quinquenio 2007-2011. Se realizó un estudio epidemiológico descriptivo y transversal. La población incluyó las defunciones en menores de un año del período estudiado. Se analizó su distribución según la edad al morir, peso al nacer y lugar de ocurrencia, causas de muerte y criterios de reducibilidad. Ocurrieron 2.904 muertes de niños, obteniendo una tasa del 10,9‰, que mantuvo el comportamiento descendente previo. Las muertes neonatales duplicaron la mortalidad posneonatal y se concentraron en la primera semana de vida. Las causas más frecuentes estuvieron asociadas a los problemas perinatales. El mayor riesgo de morir fue para los niños de menos de 1.000 gramos o inmadurez extrema. El 60% de los eventos podría haberse evitado. La persistencia de muertes consideradas reducibles debería estimular para incentivar estrategias de intervenciones sociales y sanitarias más equitativas y de protección de la infancia.

  12. Miedo, ansiedad y fobia al tratamiento estomatológico. Fear, Anxiety and phobia to dentistry treatment

    Directory of Open Access Journals (Sweden)

    Magda Lima Álvarez

    2006-04-01

    Full Text Available A la consulta estomatológica acuden muchos pacientes con miedo al tratamiento y al sillón dental. Es por eso que nos motivamos a revisar la literatura para establecer la diferencia de los términos que empleamos para referirnos a estas situaciones dentales, precisar su prevalencia según edad y sexo, relacionar la etiología y los posibles tratamientos, así como su prevención. Se estableció la diferencia entre miedo, ansiedad y fobia dental, predominan entre el 5 y 31,5% de la población y aumenta con la edad, sin diferencias significativas de sexo. Las etiologías más frecuentes son experiencias traumáticas pasadas y la actitud aprendida de su entorno. Los tratamientos incluyen el control de la ansiedad con terapia del comportamiento y medicamentosa. En la prevención debe tenerse en cuenta los consejos a pacientes para superar el miedo al dentista y la responsabilidad del odontólogo, las cualidades requeridas del equipo de tratamiento y las características del consultorio dental.To dentistry consultation many patients go with fear to the treatment and to the dental armchair. That is why we were motivated to revise literature to establish the difference of the terms we use to refer to these dental situations, to specify their prevaling according to age and sex, to relate the ethiology and their possible treatments, as well as their prevention. We found out that fear, anxiety and dental phobia prevail between the 5 to 31º.5% of the population, and increase with age, without significant differences of sex. The most frequent ethiologies are past traumatic experiences and the learned attitude of their environment. The treatments include anxiety control with therapy of behavior and medicine. In prevention it should be kept in mind the advice to patients to surpass the fear to dentistry and the odontologist responsibility, the required qualities of the treatment team and the characteristics of the dental clinic.

  13. Explosive destruction of "2"6Al

    International Nuclear Information System (INIS)

    Kahl, D.; Yamaguchi, H.; Shimizu, H.

    2016-01-01

    The γ-ray emission associated with the radioactive decay of "2"6Al is one of the key pieces of observational evidence indicating stellar nucleosynthesis is an ongoing process in our Galaxy, and it was the first such radioactivity to be detected. Despite numerous efforts in stellar modeling, observation, nuclear theory, and nuclear experiment over the past four decades, the precise sites and origin of Galactic "2"6Al remain elusive. We explore the present experimental knowledge concerning the destruction of "2"6Al in massive stars. The precise stellar rates of neutron-induced reactions on "2"6Al, such as (n,p) and (n,α), have among the largest impacts on the total "2"6Al yield. Meanwhile, reactions involving the short-lived isomeric state of "2"6Al such as radiative proton capture are highly-uncertain at present. Although we presented on-going experimental work from n TOF at CERN with an "2"6Al target, the present proceeding focuses only on the "2"6Al isomeric radioactive beam production aspect and the first experimental results at CRIB.

  14. Handlung und Kommunikation als Grundbegriffe der Soziologie

    NARCIS (Netherlands)

    Martens, W.P.M.; Albert, H.; Greshoff, R.; Schützeichel, R.

    2010-01-01

    Handlung und Kommunikation gelten in der Soziologie manchmal als alternative, konkurrierende Grundbegriffe für die Beschreibung und Erklärung sozialer Zusammenhänge (siehe u.a. Luhmann 1984; 1990; Schneider 1994; Stichweh 2000; Greshoff 1999; Schwinn 2001; Albert et. al. 2003). Eine Soziologie,

  15. Kus on al-Zarqawi? / Aadu Hiietamm

    Index Scriptorium Estoniae

    Hiietamm, Aadu, 1954-

    2005-01-01

    Suurbritannia nädalalehe Sunday Times andmetel on Iraagi tagaotsituim mässaja, terrorivõrgustiku al Qaeda liitlane Abu-Musab al-Zarqawi pärast USA raketirünnakus haavatasaamist riigist põgenenud

  16. Miércoles al cine

    OpenAIRE

    Aguado Franco, Juan Carlos

    2014-01-01

    Se analiza un caso concreto de demanda ante una iniciativa empresarial: los miércoles al cine. Se analiza un caso concreto de demanda ante una iniciativa empresarial: los miércoles al cine. Fundamentos del Análisis Económico

  17. Oke et al 2 (12).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    The study revealed that PES contained calcium, aluminum, and iron as part of its major components. 2+. 2+ ... carbon (Chan et al., 1994) , chitosan (Schmub et al., .... (1.735 g of nickel chloride) in 200 ml of distilled. ÷. ÷. ר. צ. ח. ח. ט. ז. -. = 1. 2. 1. 100. (%). W. W. W. Mc. ÷. ÷. ר. צ. ח. ח. ט. ז. -. = 2. 3. 2. 100. (%). W. W. W. VS. ÷. ÷.

  18. Abdullah G M Al-Sehemi

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Chemical Sciences. Abdullah G M Al-Sehemi. Articles written in Journal of Chemical Sciences. Volume 121 Issue 6 November 2009 pp 983-987. Multifunctional switches based on bis-imidazole derivative · Abdullah M A Asiri Gameel A Baghaffar Khadija O Badahdah Abdullah G M Al-Sehemi ...

  19. Primary (AL) amyloidosis with gastrointestinal involvement

    DEFF Research Database (Denmark)

    Madsen, Lone Galmstrup; Gimsing, Peter; Schiødt, Frank V

    2009-01-01

    OBJECTIVE: Immunoglobulin light-chain (AL) amyloidosis is a rare disease that can affect several organs. The aim of this study was to characterize patients with gastrointestinal manifestations of AL amyloidosis, in terms of symptoms, biochemistry, and outcome. MATERIAL AND METHODS: Retrospectivel...

  20. Kultur als Ordnungshypothese über Raum?

    OpenAIRE

    Klüter, Helmut

    2009-01-01

    Inhalt: 1 Einleitung 2 Zur Attraktivität von Kultur 3 Kulturologische Methodik 4 Schnittmengen mit und Bindearme zur Kulturgeographie 5 Kritische Argumente gegen Kultur als Ordnungshypothese über Raum 6 Räumliche Abstraktion als Ordnungsstrategie über „Kultur“? 7 Zusammenfassung

  1. Al-Biruni: A Muslim Critical Thinker

    Directory of Open Access Journals (Sweden)

    Mohammad Noviani Ardi

    2016-03-01

    Full Text Available As an academic course, critical thinking has emerged in the last century as the one of the important subjects, especially in the second half. But as a kind of thinking and a process of the human reason, it was exist as old as mankind. What are known, nowadays, as (standards of critical thinking or (characteristic of critical thinker were used by some ancient Greek philosophers, e.g. Socrates, Aristotle, as well as great Muslim scholars, e.g. al-Biruni, al-Ghazali, etc. al-Biruni was known as a great Muslim scholar due to objectively scientific method in his works. Moreover, he also was famed in comparative religion which early in history of discipline of comparative religion. However, this study attempts to talk about al-Biruni, one of greatest Muslim scholar in history from another side of previously discussion. It is tries to analyze al-Biruni as a Muslim critical thinker based on his monumental work of Tahqiq ma li al-Hind min Maqulah Maqbulah fi al-‘Aql aw Mardhulah or it is known by Kitab al-Hind.

  2. Tratamiento con inmunoterapia específica en niños con Rinitis Alérgica y/o Asma Bronquial. Área Norte. 2005 - 2007.

    Directory of Open Access Journals (Sweden)

    Matilde Iraida Morera Franco

    2007-10-01

    Full Text Available Se realizó un estudio descriptivo longitudinal durante el período Enero 2005_ Enero 2007 en el Policlínico Norte del municipio Sancti Spíritus. El universo estuvo constituido por el total de niños con edades de 2_15 años con enfermedades alérgicas, a los que se realizó pruebas de alergia e indicó tratamiento con inmunoterapia específica por vía subcutánea, la muestra estuvo formada por 75 pacientes con asma bronquial, rinitis alérgica y/o ambas enfermedades, con el objetivo de determinar el comportamiento del tratamiento con inmunoterapia específica se aplicó el método porcentual para el análisis de resultados, donde el grupo etáreo que predominó fue de 2 _5 años, más del 65 % de los pacientes tratados refirieron mejoría de los síntomas las causas más frecuentes de abandono de tratamiento fue la aparición de infecciones intercurrentes, no ocurrió reacción anafiláctica en ninguno de los casos estudiados, el tratamiento con inmunoterapia puede reducir el uso de otros tratamientos asociados como Intal, antihistamínicos, broncodilatadores y esteroides.

  3. Factores asociados al bullying en instituciones de educación superior

    Directory of Open Access Journals (Sweden)

    Mawency Vergel Ortega

    2016-08-01

    Full Text Available El artículo es el resultado de la fase I del proyecto de investigación "Impacto de la comunidad de aprendizaje en el desarrollo de competencias e indicadores de innovación en la enseñanza", adelantado por la Universidad Francisco de Paula Santander, Colombia. El objetivo es analizar los factores que inciden en el bullying en estudiantes de instituciones de educación superior. La investigación sigue un enfoque cuantitativo, diseño transversal, con técnica de análisis factorial y red neuronal. La muestra la constituyen 571 estudiantes de universidades del departamento de Norte de Santander. Resultados: con una media de edad de 19,62±0,96 años, la prevalencia del bullying identificada en el estudio fue de 11,11%, y resultó más frecuente en el género femenino, en alumnos más jóvenes, homosexuales. Los factores de riesgo para las víctimas fueron: características físicas y sicológicas (χ2=21,59, p=0,000, OR2,86, IC95% 1,82-4,5, tipo y forma de acoso (χ2=31,23, p=0,000, OR5,79, IC95% 2,9-11,4; las causas del bullying con mayor frecuencia de victimización se relacionan con orientación sexual (28,6%, apariencia del cuerpo (16,2%, raza (6,8%, religión (2,5%, región de origen (1,7%. Conclusión: los factores asociados al bullying en universidades son: tipo y forma de acoso, programas de prevención institucional, perfil de la víctima, causas que generan la situación de acoso y percepciones hacia el bullying; el género y la orientación sexual explican la presencia de acoso en instituciones de educación superior en Norte de Santander.

  4. Las enfermedades alérgicas en la farmacia comunitaria: Alergológica 2014

    Directory of Open Access Journals (Sweden)

    Cristià Civit E

    2018-03-01

    Full Text Available Introducción: Alergológica 2014 es un proyecto para obtener información de tipo epidemiológico, clínico y socioeconómico de los pacientes alérgicos. Esta es la primera edición en que los farmacéuticos de farmacia comunitaria participan en el estudio junto con alergólogos. El objetivo ha sido obtener información sobre posibles programas de apoyo y asesoramiento a partir de una encuesta sobre alergia en las farmacias. Material y métodos: Estudio descriptivo mediante una encuesta nacional online para farmacéuticos comunitarios realizada entre el 17 de marzo y el 19 de mayo de 2014. Resultados: Participaron 415 farmacéuticos que contestaron el cuestionario de forma voluntaria. Entre los resultados destaca que un 40% recibe entre el 25-50% de prevalencia de consultas sobre alergia en primavera y otoño, siendo la rinitis/conjuntivitis la más frecuente con un 43%. Los tratamientos sintomatológicos sin prescripción son los que reciben más preguntas (75% de los casos. Más del 90% de los farmacéuticos consideran interesante contar con protocolos de actuación en alergia pero solo un 34% dispone de protocolos en dispensación e indicación. Entre el 88 y 98% de los casos no hay coordinación con otros profesionales sanitarios. Discusión: La información obtenida permitirá implementar protocolos, mejorar los conocimientos y dar una atención farmacéutica de calidad, ya que se podrá mejorar la atención sanitaria que reciben los pacientes atendiendo a sus necesidades. Además permitirá cooperar con los alergólogos que obtendrán información fidedigna de los aspectos que más preocupan y se preguntan los pacientes cuando no están en su consulta.

  5. Studies on SiC(p) reinforced Al-Al sub 3 Ni eutectic matrix composites

    International Nuclear Information System (INIS)

    Masrom, A.K.; Foo, L.C.; Ismail, A.B.

    1996-01-01

    An investigation on processing of Al-5.69wt% Ni eutectic with SiC particulate composites is reported. The intermetallic composites are prepared by elemental powder metallurgy route and sintered at two different temperatures, i.e., 600 degree C and 620 degree C. Results show that the metal matrix was Al-Al sub 3 Ni eutectic. The phase analysis by XRD identified the presence of Al sub 3 Ni and Al as dominant phases together with silicon and Al sub 4 C sub 3 phase as minor phases. The Al sub 4 C sub 3 and Si phases are formed during sintering due to SiC-Al interface reaction. SEM micrographs also reveal the formation of microvoid surrounding the SiC particle

  6. Data supporting Al-Abed et al., Environ. Sci.: Nano, 2016,

    Data.gov (United States)

    U.S. Environmental Protection Agency — Data files representing each of the Figures and Tables published in Al-Abed et al., Environ. Sci.: Nano, 2016, 3, 593. The data file names identify the Figure or...

  7. Konsepsi Ibnu Jarir Al-Tabari Tentang Al-Qur’an, Tafsir Dan Ta’wil

    Directory of Open Access Journals (Sweden)

    A.M Ismatulloh

    2012-12-01

    Full Text Available The objective of this research is to describe the concept of Ibnu Jarir al-Tabari about al-Qur’an, tafsir and ta’wil. Ibn Jarir al-Tabari is an outstanding expert in the classic Islamic tradition. His knowledge in hadits, fiqh, lughah, history, and tafseer is unquestionable. This study uses an analytical descriptive design. The findings show that: Firstly, in defining al-Qur’an, al-Tabari focused on the al-Qur’an as an Arabic language text, not in other language. Secondly, al-Qur’an is written in sab’ah ahruf. It means that there are 7 different kinds of language with the same meaning. Thirdly, al-Qur’an comes from seven heaven’s door. Fourthly, there is no different word between tafseer and ta’wil. They have same meaning. These concepts are different to other concepts proposed by other ulama.

  8. Synthesis and structural transformations of hydrotalcite-like materials Mg-Al and Zn-Al

    NARCIS (Netherlands)

    Prihod'ko, R.V.; Sychev, M.V.; Astrelin, I.M.; Erdmann, K.; Mangel, A.; Santen, van R.A.

    2001-01-01

    Mg-Al and Zn-Al hydrotalcite-like layered double hydroxides of various compositions were synthesized and characterized. A detailed comparative analysis of the structure and composition of starting and reconstructed layered double hydroxides was made

  9. Tailoring ultrafine grained and dispersion-strengthened Ti2AlC/TiAl ...

    Indian Academy of Sciences (India)

    and Ti-Al pre-alloyed powders at low temperature of 1150◦C. The composite mainly consisted ... Metal–matrix composites; mechanical properties; microstructures; sintering. 1. Introduction γ-TiAl-based intermetallic alloys have been extensively.

  10. Electric quadrupole moments of neutron-rich nuclei {sup 32}Al and {sup 31}Al

    Energy Technology Data Exchange (ETDEWEB)

    Kameda, D., E-mail: kameda@ribf.riken.jp; Ueno, H. [RIKEN Nishina Center (Japan); Asahi, K.; Nagae, D.; Takemura, M.; Shimada, K. [Tokyo Institute of Technology, Department of Physics (Japan); Yoshimi, A.; Nagatomo, T.; Sugimoto, T. [RIKEN Nishina Center (Japan); Uchida, M.; Arai, T.; Takase, K.; Suda, S.; Inoue, T. [Tokyo Institute of Technology, Department of Physics (Japan); Murata, J.; Kawamura, H. [Rikkyo University, Department of Physics (Japan); Watanabe, H. [Australian National University, Department of Nuclear Physics (Australia); Kobayashi, Y.; Ishihara, M. [RIKEN Nishina Center (Japan)

    2007-11-15

    The electric quadrupole moments for the ground states of {sup 32}Al and {sup 31}Al have been measured by the {beta} ray-detected nuclear quadrupole resonance method. Spin-polarized {sup 32}Al and {sup 31}Al nuclei were obtained from the fragmentation of {sup 40}Ar projectiles at E/A = 95 MeV/nucleon, and were implanted in a single crystal {alpha}-Al{sub 2}O{sub 3} stopper. The measured Q moment of {sup 32}Al, |Q({sup 32}Al)| = 24(2) mb, is in good agreement with a conventional shell-model calculation with a full sd model space and empirical effective charges, while that of {sup 31}Al is considerably smaller than the sd calculations.

  11. The Y-Cu-Al system

    International Nuclear Information System (INIS)

    Krachan, T.; Stel'makhovych, B.; Kuz'ma, Yu.

    2003-01-01

    The phase diagram of the Y-Cu-Al system at 820 K has been constructed using X-ray powder diffraction. The existence of earlier known ternary aluminides has been confirmed and their homogeneity regions and atomic distributions in the structures have been determined: YCu 4.6-4.0 Al 7.4-8.0 (ThMn 12 -type R I =0.049), Y 2 Cu 12.0-10.5 Al 5.0-6.5 (Th 2 Zn 17 -type R I =0.092), YCu 1.0-1.1 Al 1.0-0.9 (Fe 2 P-type R I =0.068). It has been shown that the structure of Y(Cu,Al) 3 is characterized by an ordered distribution of the Cu and Al atoms and it should be referred as Ca 3 Cu 2 Al 7 structure type (R I =0.060) besides the PuNi 3 structure type with statistical occupancies of the smaller atoms. At the investigated temperature the compound YCu 1.0-0.25 Al 3.0-3.75 (BaAl 4 -type) was not observed. However, we found the ternary aluminide with composition Y 3 Cu 2.7-2.0 Al 8.3-9.0 and related La 3 Al 11 -type (space group Immm, a=0.4192-0.4228, b=1.2423-1.2557, c=0.9812-0.9895 nm, R I =0.069). The compounds YCu 6.8 Al 4.2 (space group Fddd, Tb(Cu 0.58 Al 0.42 ) 11 -type, a=1.42755, b=1.48587, c=0.65654 nm, R I =0.062) and YCu 6.5 Al 4.5 (space group I4 1 /amd, BaCd 11 -type, a=1.02774, c=0.65838 nm, R I =0.071) have been found and structurally refined for the first time

  12. Pemikiran Filosofis Sadra Dalam Tafsir Al-Qur’an Al-Karim : Surah Al-’A‘la

    Directory of Open Access Journals (Sweden)

    Kerwanto Kerwanto

    2014-12-01

    Full Text Available Abstrak : Dalam tafsir atas Surah al-’A‘lā, Mulla Sadra, melalui karyanya Tafsīr al Qur’ān al-Karīm, mengajak jiwa kita berpetualang menuju lapisan makna terdalam untuk mengenali realitas ketauhidan (al- mabdā’, kenabian (shirāth atau nubuwwah dan kebangkitan (ma‘ād dan mengulasnya secara filosofis. Penelitian ini merupakan suatu upaya untuk menggali manfaat dari aspek-aspek penting dari sumber-sumber keagamaan yang tergali dari petunjuk al Qur’an yang berpadu dengan prinsip- prinsip rasional filosofis dan pengalaman mistik (intuitif Sadra. Setiap bab pada tafsir ini diberikan judul dengan tasbīḥ (pernyataan pemujian dan pensucian, dengan tetap memaparkan beragam pokok persoalan terkait metafisika al-Qur’an. Prinsip-prinsip filosofis yang digunakan dalam risalah tafsir ini bisa menjadi salah satu bukti ketidakberjarakan antara filsafat dengan teks-teks keagamaan. Sadra menggunakan metode tafsir yang tetap menerima sisi lahiriah al-Qur’an, dan selanjutnya mencari misteri-misteri, rahasia-rahasia, dan dengan bantuan intelek (akal, intuisi dan iluminasi Tuhan untuk memperoleh realitas-realitas dan makna- makna dibalik selaput ekternalnya (aspek literalnyaKata kunci : Ḥikmah Muta’āliyah, irfan, al-mabdā’, kebangkitan setelah mati, nubuwwah, takwīl, gerak substansial (ḥarakah jawhariyyah, denotasi utama (al-maqshūd al-ashlī, penyempurnaan diri (takammul, tasbīḥ.  Abstract : In his commentary on Surah al-’ A‘lā, Mulla Sadra, through his Tafsīr al-Qur’ān al-Karīm invites our souls to ventureinto the deepest layers of meaning to recognize the reality of Divinity (al- mabdā’, prophethood (Ṣirāṭ or nubuwwah and resurrection (ma‘ād and discusses it in a more philosophical manner. This study is an attempt to explore the benefits of these important aspects of religious sources unearthed from Qur’anic injunctions combined with rational principles of philosophical and mystical experiences

  13. KRITIK ATAS KRITIK EPISTEMOLOGI TAFSIR M. ABIED AL JABIRI: Studi Kritis atas Madkhal ila al Quran al Karim

    Directory of Open Access Journals (Sweden)

    Ahmad Fawaid

    2015-12-01

    Full Text Available This paper critically views the epistemology of Muhammad Abid al Jabiri’s interpretation in his book, Madkhal ila al Quran al Karim. His latest work is projected to make the Quran relevant to mankind today and with certainly critiquing classical Quranic studies that have been constructed by previous scholars. Starting from Arab criticism, which is expected to synergize the gap between Turath and modernity, al Jabiri tried out his theory in the realm of Quranic studies oriented to maintain its originality and interpretation from sectarian influence. Focusing on al Jabiri’s review on the Quran, this paper examines and associates some of the problems with the epistemology of critique in Arab reasoning. Finally, it is inferred that the epistemologic offer of al Jabiri used in Turath is not fully applicable in Quranic studies for several reasons. First, the Quranic studies existed within the chain of sanad in its formation. Secondly, at the application stage, al Jabri often overlooked the sanad and narrations from the companions.

  14. Micromechanisms of fracture and fatigue in Ti3Al based and TiAl based intermetallics

    International Nuclear Information System (INIS)

    James, A.W.; Chave, R.A.; Hippsley, C.A.; Bowen, P.

    1993-01-01

    Micromechanisms of fracture and fatigue crack growth resistance in specific Ti 3 Al based and TiAl based intermetallics are reviewed. Effects of test temperature, environment and microstructure on crack growth resistance are considered in detail for several Ti 3 Al and Ti'Al based intermetallic systems under development. The implications of these studies for the structural reliability of these materials is also addressed briefly. (orig.)

  15. Density and atomic volume in liquid Al-Fe and Al-Ni binary alloys

    Energy Technology Data Exchange (ETDEWEB)

    Plevachuk, Yu. [Ivan Franko National Univ., Lviv (Ukraine). Dept. of Metal Physics; Egry, I.; Brillo, J.; Holland-Moritz, D. [Deutsches Zentrum fuer Luft- und Raumfahrt, Koeln (Germany). Inst. fuer Raumsimulation; Kaban, I. [Chemnitz Univ. of Technolgy (Germany). Inst. of Physics

    2007-02-15

    The density of liquid Al-Fe and Al-Ni binary alloys have been determined over a wide temperature range by a noncontact technique combining electromagnetic levitation and optical dilatometry. The temperature and composition dependences of the density are analysed. A negative excess volume correlates with the negative enthalpy of mixing, compound forming ability and chemical short-range ordering in liquid Al-Fe and Al-Ni alloys. (orig.)

  16. AL(0) in municipal waste incinerator ash

    Science.gov (United States)

    Stipp, S. L.; Ronsbo, J. G.; Zunic, T. B.; Christensen, T. H.

    2003-04-01

    Disposal of municipal waste is a challenge to society. Waste volume is substantially decreased by incineration but residual ash usually contains a number of toxic components which must be immobilised to insure environmental protection. One element, chromium, is mobile and toxic in its oxidised state as Cr(VI) but it can be reduced to Cr(III) and immobilised. Reduction can be promoted by ash treatment with Fe(0) or Fe(II), but recent evidence shows that at least some Cr(VI) is reduced spontaneously in the ash. Aspects of ash behaviour suggest metallic aluminium as the reducing agent, but no direct evidence of Al(0) has been found until now. We examined filter ash from an energy-producing, municipal-waste incinerator (Vest-forbrænding) near Copenhagen. X-ray diffraction (XRD) identified expected salts of Na, K and Ca such as halite, sylvite, calcite, anhydrite and gypsum as well as quartz, feldspar and some hematite. Wave-dispersive electron microprobe produced elemen-tal maps of the ash; Al-rich areas were analysed quantitatively by comparison with standards. We identified metallic Al particles, averaging 50 to 100 micrometers in di-ameter, often with a fractured, glassy border of aluminum oxide. The particles were porous, explaining fast Cr(VI) reduction and they contained thin exsolution lamellae of Al-alloys of Pb and Cu or Mn, Fe and Ag, which provide clues of the Al(0) origin in the waste. Sometimes Al(0) occurred inside glassy globes of Al2O3. Time-of-flight secondary ion mass spectroscopy (TOF-SIMS) and X-ray photoelectron spectroscopy (XPS) proved that surface Al concentrations on ash particles were below detection, confirming reactivity of the Al(0) bulk. The persistence of reduced Al through the highly oxidising combustion procedure comes as a surprise and is a benefit in the immobilisation of Cr(VI) from municipal-waste incineration residues.

  17. HOMENAJE AL DOCTOR JORGE CAVELIER

    Directory of Open Access Journals (Sweden)

    Guillermo Rueda Montaña

    1979-06-01

    ósitos. Jamás concibió nada pequeño, ni en lo material, ni en lo espiritual. Su propio mundo de acción y movimiento, tallado a su imagen y semejanza, no le permitía detenerse en pequeñeces. Cabalgaba
    contra el tiempo, y este no le era suficiente para sus designios. Por eso no podía detenerse en minucias, jamás fue mediocre, ni toleró la mediocridad.

    JORGE CAVELIER pasa al Panteón de los grandes de Colombia, su excepcional condición humana así lo impone, sus valiosos servicios a la Patria así lo demandan, y el profundo rastro que deja de su paso por la vida, así lo decide.

    La CRUZ ROJA COLOMBIANA, que le debe casi todo, ya no será la misma. Será imposible ocupar el inmenso vacío que deja la desaparición del titán. Ocuparemos su sitio, mas no lo reemplazaremos.
    Como las criaturas del bosque milenario, permaneceremos silenciosos y cavilantes ante el majestuoso y doloroso espectáculo de su caída.

    Descanse en Paz.

  18. Magnetic tunnel junctions with AlN and AlNxOy barriers

    International Nuclear Information System (INIS)

    Schwickert, M. M.; Childress, J. R.; Fontana, R. E.; Kellock, A. J.; Rice, P. M.; Ho, M. K.; Thompson, T. J.; Gurney, B. A.

    2001-01-01

    Nonoxide tunnel barriers such as AlN are of interest for magnetic tunnel junctions to avoid the oxidation of the magnetic electrodes. We have investigated the fabrication and properties of thin AlN-based barriers for use in low resistance magnetic tunnel junctions. Electronic, magnetic and structural data of tunnel valves of the form Ta (100 Aa)/PtMn (300 Aa)/CoFe 20 (20 Aa - 25 Aa)/barrier/CoFe 20 (10 - 20 Aa)/NiFe 16 (35 - 40 Aa)/Ta (100 Aa) are presented, where the barrier consists of AlN, AlN x O y or AlN/AlO x with total thicknesses between 8 and 15 Aa. The tunnel junctions were sputter deposited and then lithographically patterned down to 2 x 2μm 2 devices. AlN was deposited by reactive sputtering from an Al target with 20% - 35% N 2 in the Ar sputter gas at room temperature, resulting in stoichiometric growth of AlN x (x=0.50±0.05), as determined by RBS. TEM analysis shows that the as-deposited AlN barrier is crystalline. For AlN barriers and AlN followed by natural O 2 oxidation, we obtain tunnel magnetoresistance >10% with specific junction resistance R j down to 60Ωμm 2 . [copyright] 2001 American Institute of Physics

  19. Dakwah Kultural Bayt al-Qur’an al-Akbar Ukiran Kayu Khas Melayu Palembang

    Directory of Open Access Journals (Sweden)

    Reza Pahlevi

    2016-07-01

    Full Text Available Penelitian ini berusaha mengungkap berbagai fenomena yang menggambarkan serangkaian kegiatan dakwah kultural Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang. Sehingga dapat diperoleh sejumlah informasi mengenai berbagai upaya penerapan program yang dimaksud. Penelitian ini dapat disimpulkan, pertama kontribusi Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang terhadap perkembangan metode dakwah kultural adalah dakwah melalui seni. Kedua, Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang sebagai tempat Wisata Religi yang sangat signifikan.   This research tries to reveal the various phenomenon that describe a series of cultural propaganda activities Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang. In order to obtain some informations about the efforts of the implementation of the program in question. It can be concluded, the first contribution of Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang on the development of methods of cultural propaganda is propaganda through art. Second Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang as a very significant Religious Tourism.

  20. SAP-like ultrafine-grained Al composites dispersion strengthened with nanometric AlN

    International Nuclear Information System (INIS)

    Balog, M.; Krizik, P.; Yan, M.; Simancik, F.; Schaffer, G.B.; Qian, M.

    2013-01-01

    This paper reports the development of novel Sinter-Aluminum-Pulver (SAP)-like Al–AlN nanocomposites via replacing the native Al 2 O 3 thin films on fine Al powder with a large volume fraction of in situ formed nanometric AlN dispersoids. Fine gas-atomized Al powder (d 50 =1.3 µm) compacts were first partially nitrided at 590 °C in flowing nitrogen, controlled by a small addition of Sn (0.3–0.4 wt%), and subsequently consolidated by hot direct extrusion. The resulting Al–AlN composites consisted of submicrometric Al grains reinforced with nanometric AlN dispersoids together with some nanometric Al 2 O 3 dispersoids. An Al–13 vol% AlN nanocomposite fabricated this way achieved exceptional ultimate tensile strength of 227 MPa, yield strength of 195 MPa and Young's modulus of 66 GPa at 300 °C, superior to typical SAP materials and coarse grained Al–AlN composites. In addition, the Al–13 vol% AlN nanocomposite exhibited good thermal stability up to 500 °C. The strengthening mechanism is discussed

  1. Computer aided cooling curve analysis for Al-5Si and Al-11Si alloys ...

    African Journals Online (AJOL)

    The effect of grain refiner, modifier, and combination of grain refiner cum modifier was studied on Al-5Si and Al-11Si alloys using computer aided cooling curve analysis. For combined grain refinement and modification effect, Al-Ti-B-Sr single master alloy was developed that acted as both grain refiner and modifier.

  2. Assessing behavioural changes in ALS: cross-validation of ALS-specific measures.

    Science.gov (United States)

    Pinto-Grau, Marta; Costello, Emmet; O'Connor, Sarah; Elamin, Marwa; Burke, Tom; Heverin, Mark; Pender, Niall; Hardiman, Orla

    2017-07-01

    The Beaumont Behavioural Inventory (BBI) is a behavioural proxy report for the assessment of behavioural changes in ALS. This tool has been validated against the FrSBe, a non-ALS-specific behavioural assessment, and further comparison of the BBI against a disease-specific tool was considered. This study cross-validates the BBI against the ALS-FTD-Q. Sixty ALS patients, 8% also meeting criteria for FTD, were recruited. All patients were evaluated using the BBI and the ALS-FTD-Q, completed by a carer. Correlational analysis was performed to assess construct validity. Precision, sensitivity, specificity, and overall accuracy of the BBI when compared to the ALS-FTD-Q, were obtained. The mean score of the whole sample on the BBI was 11.45 ± 13.06. ALS-FTD patients scored significantly higher than non-demented ALS patients (31.6 ± 14.64, 9.62 ± 11.38; p ALS-FTD-Q was observed (r = 0.807, p ALS-FTD-Q. Good construct validity has been further confirmed when the BBI is compared to an ALS-specific tool. Furthermore, the BBI is a more comprehensive behavioural assessment for ALS, as it measures the whole behavioural spectrum in this condition.

  3. Japanese version of the ALS-FTD-Questionnaire (ALS-FTD-Q-J).

    Science.gov (United States)

    Watanabe, Yasuhiro; Beeldman, Emma; Raaphorst, Joost; Izumi, Yuishin; Yoshino, Hiide; Masuda, Michihito; Atsuta, Naoki; Ito, Satoru; Adachi, Tadashi; Adachi, Yoshiki; Yokota, Osamu; Oda, Masaya; Hanashima, Ritsuko; Ogino, Mieko; Ichikawa, Hiroo; Hasegawa, Kazuko; Kimura, Hideki; Shimizu, Toshio; Aiba, Ikuko; Yabe, Hayato; Kanba, Makoto; Kusumi, Kimiyoshi; Aoki, Tetsuya; Hiroe, Yu; Watanabe, Hirohisa; Nishiyama, Kazutoshi; Nomoto, Masahiro; Sobue, Gen; Nakashima, Kenji

    2016-08-15

    Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) share common clinical, genetic and neuropathological features. Some ALS patients have behavioral/personality changes, which could result in significant obstacles in the care provided by family members and caregivers. An easy screening tool would contribute greatly to the evaluation of these symptoms. We translated the ALS-FTD-Questionnaire, developed in the Netherlands, into Japanese (ALS-FTD-Q-J) and examined the clinimetric properties (internal consistency, construct and clinical validity). Patients with ALS and/or behavioral variant FTD (bvFTD) were evaluated alongside healthy controls in this multicenter study. All ALS patients, regardless of bvFTD status, were further evaluated by the frontal behavioral inventory (FBI) and for frontal/executive function, cognition, anxiety/depression, and motor functions. Data from 146 subjects were analyzed: ALS (92), ALS-bvFTD (6), bvFTD (16), and healthy controls (32). The internal consistency of the ALS-FTD-Q-J was good (Cronbach α=0.92). The ALS-FTD-Q-J showed construct validity as it exhibited a high correlation with the FBI (r=0.79). However, correlations were moderate with anxiety/depression and low with cognitive scales, in contrast to the original report, i.e. a moderate correlation with cognition and a low correlation with anxiety/depression. The ALS-FTD-Q-J discriminated ALS patients from (ALS-)bvFTD patients and controls. Thus, the ALS-FTD-Q-J is useful for evaluating Japanese ALS/FTD patients. Copyright © 2016 Elsevier B.V. All rights reserved.

  4. Does Al Qaeda Central Still Matter?

    Directory of Open Access Journals (Sweden)

    Kangil Lee

    2015-01-01

    Full Text Available El artículo discute si Al Qaeda central es todavía relevante o no. Tras estudiar la actividades de Al Qaeda central cuyo objetivo es provocar la violencia en Afganistán y Pakistán, así como los planes continuos de ataques directos contra los Estados Unidos, el artículo muestra que la capacidad operativa de Al Qaeda es más sólida y fuerte que la que Estados Unidos y otros investigadores y eruditos han anticipado. Además, el apoyo virulento y la contribución Al Qaeda en la Península Arábiga a la red de Al Qaeda muestra que la longevidad de Al Qaeda depende de la relación con sus afiliados. El artículo concluye que, en estas condiciones, Al Qaeda central todavía ocupa un lugar en las discusiones de seguridad global.

  5. Al cation induces aggregation of serum proteins.

    Science.gov (United States)

    Chanphai, P; Kreplak, L; Tajmir-Riahi, H A

    2017-07-15

    Al cation is known to induce protein fibrillation and causes several neurodegenerative disorders. We report the spectroscopic, thermodynamic analysis and AFM imaging for the Al cation binding process with human serum albumin (HSA), bovine serum albumin (BSA) and milk beta-lactoglobulin (b-LG) in aqueous solution at physiological pH. Hydrophobicity played a major role in Al-protein interactions with more hydrophobic b-LG forming stronger Al-protein complexes. Thermodynamic parameters ΔS, ΔH and ΔG showed Al-protein bindings occur via hydrophobic and H-bonding contacts for b-LG, while van der Waals and H-bonding interactions prevail in HSA and BSA adducts. AFM clearly indicated that aluminum cations are able to force BSA and b-LG into larger or more robust aggregates than HSA, with HSA 4±0.2 (SE, n=801) proteins per aggregate, for BSA 17±2 (SE, n=148), and for b-LG 12±3 (SE, n=151). Thioflavin T test showed no major protein fibrillation in the presence of Al cation. Al complexation induced major alterations of protein conformations with the order of perturbations b-LG>BSA>HSA. Copyright © 2017 Elsevier B.V. All rights reserved.

  6. Strength of Al and Al-Mg/alumina bonds prepared using ultrahigh vacuum diffusion bonding

    International Nuclear Information System (INIS)

    King, W.E.; Campbell, G.H.; Wien, W.L.; Stoner, S.L.

    1994-01-01

    The authors have measured the cross-breaking strength of Al and Al-Mg alloys bonded with alumina. Diffusion bonding of Al and Al-Mg alloys requires significantly more bonding time than previously thought to obtain complete bonding. In contrast to previous diffusion bonding studies, fracture morphologies are similar to those obtained in bonds formed by liquid phase reaction; i.e., bonds are as strong or stronger than the ceramic; and fracture tends to propagate in the metal for pure Al and near the interface in the ceramic for the alloys. There are indications that the fracture morphology depends on Mg content and therefore on plasticity in the metal

  7. [Lessons from Guam ALS/PDC study].

    Science.gov (United States)

    Asao, Hirano

    2007-11-01

    An extraordinarily high incidence of amyotrophic lateral sclerosis (ALS) and parkinsonism-dementia complex (PDC) affecting the native population was discovered on the island of Guam a half century ago. Guam ALS is identical to classic ALS clinically and pathologically while PDC is marked by progressive parkinsonism and dementia. The unusual histological finding in these fetal neurodegenerative diseases is the presence of numerous neurofibrillary tangles in a selective topographic distribution unassociated with senile plaques. There have been remarkable advances in field of age-associated neurodegenerative disease after our initial study of Guam cases. Four noteworthy topics are presented in this communication. 1) Clinically, the coexistence of parkinsonism and dementia was frequently recognized in Parkinson disease and Alzheimer disease. Some other new disease entities characterized by coexistence of parkinsonism and dementia have been reported. These include progressive supranuclear palsy, frontotemporal dementia and parkinsonism linked to chromosome 17. 2) Neuropathologically, abundant neurofibrillary tangles unassociated with senile plaques were demonstrated in many diseases such as aftermath of boxing and tangle-only dementia. Furthermore, tau-positive structures were recognized not only in neurons but in glial cells in certain diseases. Tauopathy is one of the current hot research subjects. 3) Familial aggregation of Guam ALS patients provoked investigation of familial ALS elsewhere. Familial motor neuron disease with SOD1 mutation is the target of worldwide intense investigation at the present time. SOD1 gene mutation is, however, not found in Guam ALS. 4) The most striking findings of the Guam study is the gradual decline in the incidence of ALS on Guam during a quarter century and virtual disappearance of new patients. This may be linked to a remarkable change in environment and life style of the Chamorro population. The etiology of ALS is still unknown and

  8. Factores asociados al absentismo laboral en los empleados de una institución de salud de Medellín. Colombia, 2016

    Directory of Open Access Journals (Sweden)

    Edwin Alexis Cataño Saldarriaga

    Full Text Available RESUMEN Introducción: El absentismo laboral es una situación muy frecuentes en las empresas de salud de Colombia, sin embargo la empresa objeto de estudio no conoce los factores asociados a este. Objetivo: Identificar los factores asociados al absentismo laboral en los empleados de una institución de salud. Materiales y métodos: Estudio empírico-analítico, cuantitativo de corte transversal. La población de estudio fueron los empleados de una institución prestadora de servicios de salud de Medellín, Colombia. Se aplicó una encuesta estructurada teniendo en cuenta variables demográficas, laborales, familiares, personales y sociales. Resultados: Se encuestaron 140 de los 898 empleados, con una proporción de absentismo del 8,4%. De los que presentaron absentismo laboral, el 84% fueron mujeres. En cuanto a la edad se identificó una media de 32 años; el nivel educativo técnico o menor tuvo una RP 3,2, el área laboral asistencial de 4,8 y el cargo laboral de apoyo de 2,3, variables que presentaron una asociación estadísticamente significativa con haber tenido absentismo laboral. Conclusiones: Los factores que se asocian al absentismo laboral en los empleados de la institución de salud de estudio, están dados por el bajo nivel educativo, tener un cargo laboral de apoyo y desempeñar funciones de asistencia.

  9. Modal analysis applied to rotor balancing: two relevant technical aspects; Analisis modal aplicado al balanceo de rotores: dos aspectos tecnicos relevantes

    Energy Technology Data Exchange (ETDEWEB)

    Aguirre Romano, Jorge E.; Preciado Delgado, Eduardo [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1991-12-31

    In applying the modal analysis to rotor balancing, it is frequent to find technical matters that are hardly developed in text books or that can only be deducted through a profound and complex study. For this reason, an engineer dedicated to the practice that wishes to deepen in the subject of rotor balancing, can hardly understand these matters, unless they are developed with the specific orientation that relate them with the balancing practice. In this paper two of these subjects related to the definition and recollection of modal parameters are presented: a) the fundamental form of the polar diagrams of response, that can be perfectly circular in certain cases and b) the relationship that exists among the modal forms of a rotor and the distribution of weights that must be placed to balance them in a given way. [Espanol] Al aplicar el analisis modal al balanceo de rotores, es frecuente encontrar temas tecnicos que dificilmente se desarrollan en los libros de texto, o que solo pueden deducirse mediante un estudio profundo y complejo. Por esta razon, un ingeniero dedicado a la practica que desee profundizar en el tema de balanceo de rotores, dificilmente podra comprender estos temas, a no ser que estos sean desarrollados con la orientacion especifica que los relacionen con la practica del balanceo. En este trabajo se presentan dos de esos temas relacionados con la definicion y obtencion de los parametros modales: a) la forma fundamental de los diagramas polares de respuesta, que puede ser circular perfecta en ciertos casos, y b) la relacion que existe entre las formas modales de un rotor y la distribucion de pesos que se deben colocar para balancear un modo dado.

  10. Modal analysis applied to rotor balancing: two relevant technical aspects; Analisis modal aplicado al balanceo de rotores: dos aspectos tecnicos relevantes

    Energy Technology Data Exchange (ETDEWEB)

    Aguirre Romano, Jorge E; Preciado Delgado, Eduardo [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1992-12-31

    In applying the modal analysis to rotor balancing, it is frequent to find technical matters that are hardly developed in text books or that can only be deducted through a profound and complex study. For this reason, an engineer dedicated to the practice that wishes to deepen in the subject of rotor balancing, can hardly understand these matters, unless they are developed with the specific orientation that relate them with the balancing practice. In this paper two of these subjects related to the definition and recollection of modal parameters are presented: a) the fundamental form of the polar diagrams of response, that can be perfectly circular in certain cases and b) the relationship that exists among the modal forms of a rotor and the distribution of weights that must be placed to balance them in a given way. [Espanol] Al aplicar el analisis modal al balanceo de rotores, es frecuente encontrar temas tecnicos que dificilmente se desarrollan en los libros de texto, o que solo pueden deducirse mediante un estudio profundo y complejo. Por esta razon, un ingeniero dedicado a la practica que desee profundizar en el tema de balanceo de rotores, dificilmente podra comprender estos temas, a no ser que estos sean desarrollados con la orientacion especifica que los relacionen con la practica del balanceo. En este trabajo se presentan dos de esos temas relacionados con la definicion y obtencion de los parametros modales: a) la forma fundamental de los diagramas polares de respuesta, que puede ser circular perfecta en ciertos casos, y b) la relacion que existe entre las formas modales de un rotor y la distribucion de pesos que se deben colocar para balancear un modo dado.

  11. Al-Âyah al-Mutasyâbihât al-Lafzhiyyah fi Sûrah al-An’âm ‘Inda al-Kirmâny

    Directory of Open Access Journals (Sweden)

    Hikmatiar Pasya

    2017-07-01

    Full Text Available This paper discusses about the verses of mutasyâbihât in the Quran. The debate of this verses caused various opinions. The meaning of the mutasyâbihât in this paper is the similarity and difference of the words in the Qur'an. Mufasir have different opinion about the meaning of the verse of mutasyâbihât al-lafdzi. In addition, many Hufadz of the Quran who are confused from one verse to another, or one chapter to another. It’s because similarity of verses in the Qur'an with other verses. So the writer wants to explain the verses mutasyâbihât al-lafdzi in the perspective of Hamzh al-Karmani in Surah al-An'âm. In this discussion the author discovers some passages in mutasyâbihât al-lafdzi, namely Asrâru al-balaghah fi mutasyabih al-lafdzi, Asrar al-balaghah fi mutasyabih al-hurf, and murâ'ah al-ikhtilâfmurâd bi al-lafdzi al-mukarrar.

  12. Tracing Al Shabaab’s Decision to Cooperate with Al Qaeda in Somalia (2008

    Directory of Open Access Journals (Sweden)

    Adlini Ilma Ghaisany Sjah

    2014-02-01

    Full Text Available 'Al Shabaab, a Somali insurgent with predominantly nationalistic causes (alongside transnational [global Jihad] and Islamic goals made the choice to fight on behalf of Al Qaeda in 2008. The decision to do so contrasted with Al Shabaab’s previous behaviour of actively denying cooperation and distancing itself from Al Qaeda. This study aims to uncover factors that contributed to Al Shabaab’s decision through the use of process-tracing. The results show that Al Shabaab’s declaration of cooperation with Al Qaeda in August 2008 was brought about by a series of events that traced back to four factors: public reactions to the implementation of a Salafi ideology, the shift to a radical leadership, Al Shabaab’s inability to maintain stability in areas under its control and its increasing attacks by Al Shabaab on the Somali public. Al Shabaab pursued cooperation with Al Qaeda after realizing that their nationalistic preference was no longer achievable in the near future.' ' '

  13. Optical, structural, and nuclear scientific studies of AlGaN with high Al composition

    Science.gov (United States)

    Lin, Tse Yang; Chung, Yee Ling; Li, Lin; Yao, Shude; Lee, Y. C.; Feng, Zhe Chuan; Ferguson, Ian T.; Lu, Weijie

    2010-08-01

    AlGaN epilayers with higher Al-compositions were grown by Metalorganic Chemical Vapor Deposition (MOCVD) on (0001) sapphire. Trimethylgallium (TMGa), trimethylaluminium (TMAl) and NH3 were used as the source precursors for Ga, Al, and N, respectively. A 25 nm AlN nucleation layer was first grown at low-temperature of 590 °C at 300 Torr. Followed, AlxGa1-xN layers were grown at 1080 °C on low-temperature AlN nucleation layers. The heterostructures were characterized by a series of techniques, including x-ray diffraction (XRD), Rutherford backscattering (RBS), photoluminescence (PL), scanning electron microscopy (SEM) and Raman scattering. Precise Al compositions were determined through XRD, RBS, and SEM combined measurements. Room Temperature Raman Scattering spectra shows three major bands from AlGaN alloys, which are AlN-like, A1 longitudinal optical (LO) phonon modes, and E2 transverse optical (TO) band, respectively, plus several peak comes from the substrate. Raman spectral line shape analysis lead to an optical determination of the electrical property free carrier concentration of AlGaN. The optical properties of AlGaN with high Al composition were presented here.

  14. Formation of epitaxial Al 2O 3/NiAl(1 1 0) films: aluminium deposition

    Science.gov (United States)

    Lykhach, Y.; Moroz, V.; Yoshitake, M.

    2005-02-01

    Structure of epitaxial Al 2O 3 layers formed on NiAl(1 1 0) substrates has been studied by means of reflection high-energy electron diffraction (RHEED). The elucidated structure was compared to the model suggested for 0.5 nm-thick Al 2O 3 layers [K. Müller, H. Lindner, D.M. Zehner, G. Ownby, Verh. Dtsch. Phys. Ges. 25 (1990) 1130; R.M. Jaeger, H. Kuhlenbeck, H.J. Freund, Surf. Sci. 259 (1991) 235]. The stepwise growth of Al 2O 3 film, involving deposition and subsequent oxidation of aluminium onto epitaxial 0.5 nm-thick Al 2O 3 layers, has been investigated. Aluminium was deposited at room temperature, whereas its oxidation took place during annealing at 1070 K. The Al 2O 3 thickness was monitored by means of Auger electron spectroscopy (AES). It was found that Al 2O 3 layer follows the structure of 0.5 nm thick Al 2O 3 film, although a tilting of Al 2O 3(1 1 1) surface plane with respect to NiAl(1 1 0) surface appeared after Al deposition.

  15. Structural and electrical characterization of AuPtAlTi ohmic contacts to AlGaN/GaN with varying annealing temperature and Al content

    OpenAIRE

    Fay, Mike W.; Han, Y.; Brown, Paul D.; Harrison, Ian; Hilton, K.P.; Munday, A.; Wallis, D.; Balmer, R.S.; Uren, M.J.; Martin, T.

    2008-01-01

    The effect of varying annealing temperature and Al layer thickness on the structural and electrical characteristics of AuPtAlTi/AlGaN/GaN ohmic contact structures has been systematically investigated. The relationship between annealing temperature, Al content, interfacial microstructure, surface planarity and contact resistance is\\ud examined. In particular, the presence of a detrimental low temperature Pt-Al reaction is identified. This is implicated in both the requirement for a higher Al:T...

  16. Some aspects of anelastic and microplastic creep of pure Al and two Al-alloys

    International Nuclear Information System (INIS)

    Sgobba, S.; Kuenzi, H.U.; Ilschner, B.

    1993-01-01

    Anelastic creep of pure Al, commercial Al-Cu and a binary Al-Cu alloy has been measured at room temperature by means of a high resolution laser interferometer. The irreversible component of the deformation was also quantified from measurements of the anelastic creep recovery. The dependence of the deformation-time curves on thermal treatment and cold work is analyzed. The mechanisms responsible for the room temperature anelastic creep are discussed. Materials loaded below their elastic limit can present either a pure anelastic behavior (commercial Al-Cu) or additional viscoelastic creep (pure Al, high purity Al-Cu). For commercial Al-Cu, the presence of an irreversible deformation appears to be mainly related to the state of the surface. A viscoelastic after effect has been measured for this alloy after a Cu-electroplating treatment. As a typical result for room temperature creep, the irreversible deformation depends logarithmically on load time. (orig.)

  17. Some aspects of anelastic and microplastic creep of pure Al and two Al-alloys

    Energy Technology Data Exchange (ETDEWEB)

    Sgobba, S. (Lab. de Metallurgie Mecanique, Dept. des Materiaux, Ecole Polytechnique Federale de Lausanne (Switzerland)); Kuenzi, H.U. (Lab. de Metallurgie Mecanique, Dept. des Materiaux, Ecole Polytechnique Federale de Lausanne (Switzerland)); Ilschner, B. (Lab. de Metallurgie Mecanique, Dept. des Materiaux, Ecole Polytechnique Federale de Lausanne (Switzerland))

    1993-11-01

    Anelastic creep of pure Al, commercial Al-Cu and a binary Al-Cu alloy has been measured at room temperature by means of a high resolution laser interferometer. The irreversible component of the deformation was also quantified from measurements of the anelastic creep recovery. The dependence of the deformation-time curves on thermal treatment and cold work is analyzed. The mechanisms responsible for the room temperature anelastic creep are discussed. Materials loaded below their elastic limit can present either a pure anelastic behavior (commercial Al-Cu) or additional viscoelastic creep (pure Al, high purity Al-Cu). For commercial Al-Cu, the presence of an irreversible deformation appears to be mainly related to the state of the surface. A viscoelastic after effect has been measured for this alloy after a Cu-electroplating treatment. As a typical result for room temperature creep, the irreversible deformation depends logarithmically on load time. (orig.).

  18. Analisis Kecenderungan Manhaj Akidah Shaykh Shams al-Din al-Sumatera’i

    Directory of Open Access Journals (Sweden)

    MOHD HAIDHAR KAMARZAMAN

    2016-12-01

    Full Text Available Shaykh Shams al-Din al-Sumatera'i is a very great and respected scholar during 16th and 17th century of Acheh. His knowledge in various fields recognized by local and international scholars. He had been a Qadi Malik al-’Adil, a religious leader, who became a referred by communities and country during the reign of the three Sultans of Aceh. He has authored nearly 40 pieces of books related to the theology and sufism. This study focuses on the methods used by Shaykh Shams al-Din al-Sumatera'i in his theological writings. This study found that Shaykh Shams al-Din al-Sumatera'i had used six methods in the such writings.

  19. Láser helio-neón combinado con clorhexidina al 0,2 %.: Efectos clínicos y microbiológicos en el tratamiento de la gingivitis crónica

    Directory of Open Access Journals (Sweden)

    Tatiana Peña Ruiz

    Full Text Available La gingivitis crónica constituye una de las formas más frecuentes de enfermedad periodontal, caracterizada por la inflamación crónica de la encías, tumefacción, enrojecimiento y sangramiento. Su principal factor de riesgo lo constituye la microbiota del surco gingival, que resulta necesario, pero no suficiente para desencadenarla. Se realizó un ensayo clínico-terapéutico fase II, controlado, aleatorizado y a simple ciegas, para evaluar los efectos clínicos y microbiológicos del tratamiento combinado de la radiación láser helio-neón (He-Ne con la clorhexidina al 0,2 %. Todos los pacientes recibieron tratamiento inicial; al mes de finalizado este, se distribuyeron aleatoriamente en 2 grupos: un grupo estudio que recibió la combinación láser-neón y clorhexidina al 0,2 % y otro grupo control que solo recibió clorhexidina al 0,2 %. Se realizó una evaluación a los 15, 30 y 45 días, con criterios de eficacia clínicos y microbiológicos. Los resultados clínicos fueron satisfactorios en el grupo estudio con predominio de los morfotipos I, caracterizados por cocos gramnegativos y positivos, compatibles con un periodonto sano. Los eventos adversos detectados con esta terapéutica fueron mínimos, todos relacionados con la somnolencia.

  20. Tratamiento al niño febril en atención primaria de salud Treatment of the febrile child in primary health care

    Directory of Open Access Journals (Sweden)

    Rogelio León López

    2008-03-01

    Full Text Available Se exponen consideraciones útiles sobre el tratamiento de la fiebre en el niño en el nivel de atención primaria de salud, haciendo referencia a aspectos esenciales, tales como: definición, fisiopatología, clasificación, signos de alarma y cómo tomar la temperatura, así como también aspectos básicos a tener en cuenta en el tratamiento de la entidad. Al constituir la fiebre uno de los motivos más frecuentes de atención al niño, se destaca la importancia de su correcta valoración por todo el personal que se enfrenta a la siempre preocupante situación del niño febril. Además, se enfatiza en el pesquisaje de una infección bacteriana severa a todo niño que acuda al facultativo con fiebre. Se hace referencia a algunos protocolos de trabajos nacionales e internacionales para el tratamiento al niño febril. Finalmente se hacen consideraciones sobre la importancia de entrenar no solamente al personal de la salud que atiende a los niños, sino también a los familiares y a los cuidadores del niño febril, así como algunas recomendaciones y sugerencias basadas en la bibliografía revisada y en nuestra propia experiencia en la práctica clínica.Useful considerations on the treatment of fever in the child at the primary health care level were exposed, making reference to essential aspects, such as: definition, physiopathology, classification, alarm signs, how to take the temperature, as well as other basic aspects to be taken into account in the treatment of the entity. On having fever, one of the most frequent reasons to give attention to the child, it was stressed the importance of its correct assessment by all the personnel facing the increasingly worrying situation of the febrile child. Moreover, emphasis was made on the screening of a severe bacterial infection in every child with fever visiting the physician. Reference was made to some national and international working protocols for the treatment of the febrile child. Finally, some

  1. ALS-Plus Syndrome: Non-Pyramidal Features in a Large ALS Cohort

    Science.gov (United States)

    McCluskey, Leo; Vandriel, Shannon; Elman, Lauren; Van Deerlin, Vivianna M.; Powers, John; Boller, Ashley; Wood, Elisabeth McCarty; Woo, John; McMillan, Corey T.; Rascovsky, Katya; Grossman, Murray

    2014-01-01

    Objective Autopsy studies show widespread pathology in amyotrophic lateral sclerosis (ALS), but clinical surveys of multisystem disease in ALS are rare. We investigated ALS-Plus syndrome, an understudied group of patients with clinical features extending beyond pyramidal and neuromuscular systems with or without cognitive/behavioral deficits. Methods In a large, consecutively-ascertained cohort of 550 patients with ALS, we documented atypical clinical manifestations. Genetic screening for C9orf72 hexanucleotide expansions was performed in 343 patients, and SOD1, TARDBP, and VCP were tested in the subgroup of patients with a family history of ALS. Gray matter and white matter imaging was available in a subgroup of 30 patients. Results Seventy-five (13.6%) patients were identified with ALS-Plus syndrome. We found disorders of ocular motility, cerebellar, extrapyramidal and autonomic functioning. Relative to those without ALS-Plus, cognitive impairment (8.0% vs 2.9%, p=0.029), bulbar-onset (49.3% vs 23.2%, pALS-Plus. Survival was significantly shorter in ALS-Plus (29.66 months vs 42.50 months, p=0.02), regardless of bulbar-onset or mutation status. Imaging revealed significantly greater cerebellar and cerebral disease in ALS-Plus compared to those without ALS-Plus. Conclusions ALS-Plus syndrome is not uncommon, and the presence of these atypical features is consistent with neuropathological observations that ALS is a multisystem disorder. ALS-Plus syndrome is associated with increased risk for poor survival and the presence of a pathogenic mutation. PMID:25086858

  2. High Temperature AL-Nanocrystal Alloy Synthesis

    National Research Council Canada - National Science Library

    Perepezko, J

    2001-01-01

    Aluminum-rich metallic glasses containing transition metals and rare earth elements have been found to yield finely mixed microstructures of Al nanocrystals embedded in an amorphous matrix and exhibit...

  3. Landbouwprotectie als middel tot politieke integratie.

    NARCIS (Netherlands)

    Noort, van den P.C.

    1988-01-01

    In acht hoofdstukken is dit beleid uiteengezet. 1. Landbouwprotectie als middel tot politieke integratie. 2. Eigenbelang van een meer marktgericht landbouwbeleid. 3. uitdagingen voor landbouwcooperaties. 4. Het westers landbouwbeleid en het wereldvoedselprobleem. 5. Landbouw heeft nu een eigen

  4. (14) Akinwole et al Influence of Culture

    African Journals Online (AJOL)

    Adeyinka Odunsi

    Influence of Culture Water Draw-off on Growth of the African ... 1Department of Aquaculture and Fisheries Management, University of ... areas (Eyo et al., 2003). .... systems. Nigerian Journal of Rural. Extension and Development. 6: 38-. 42.

  5. Al Qaeda: Statements and Evolving Ideology

    National Research Council Canada - National Science Library

    Blanchard, Christopher M

    2004-01-01

    ... [April and October 2004] have led some terrorism analysts to speculate that the messages may signal a new attempt by him to create a lasting political leadership role for himself and Al Qaeda as the vanguard...

  6. Grain boundaries in Ni3Al. 2

    International Nuclear Information System (INIS)

    Kung, H.; Sass, S.L.

    1992-01-01

    This paper discusses the dislocation structure of small angle tilt and twist boundaries in ordered Ni 3 Al, with and without boron, investigated using transmission electron microscopy. Dislocation with Burgers vectors that correspond to anti-phase boundary (APB)-coupled superpartials were found in small angle twist boundaries in both boron-free and boron-doped Ni 3 Al, and a small angle tilt boundary in boron-doped Ni 3 Al. The boundary structures are in agreement with theoretical models proposed by Marcinkowski and co-workers. The APB energy determined from the dissociation of the grain boundary dislocations was lower than values reported for isolated APBs in Ni 3 Al. For small angle twist boundaries the presence of boron reduced the APB energy at the interface until it approached zero. This is consistent with the structure of these boundaries containing small regions of increased compositional disorder in the first atomic plane next to the interface

  7. 12th Annual ALS Users' Association Meeting

    International Nuclear Information System (INIS)

    Robinson, Arthur L.

    1999-01-01

    Science took the front seat as 219 Advanced Light Source (ALS) users and staff gathered on Monday and Tuesday, October 18 and 19 for the twelfth annual users' meeting. The bulk of the meeting was dedicated to reports on science at the ALS. Packed into two busy days were 31 invited oral presentations and 80 submitted poster presentations, as well as time to visit 24 vendor booths. The oral sessions were dedicated to environmental science, chemical dynamics, biosciences, magnetic materials, and atomic and molecular science. In addition, there was an ALS highlights session that emphasized new results and a session comprising highlights from the young scientists who will carry the ALS into the future

  8. AL Amyloidosis Complicated by Persistent Oral Bleeding

    Directory of Open Access Journals (Sweden)

    Luiz Antonio Liarte Marconcini

    2015-01-01

    Full Text Available A case of amyloid light chain (AL amyloidosis is presented here with uncontrolled bleeding after a nonsurgical dental procedure, most likely multifactorial in nature, and consequently treated with a multidisciplinary approach.

  9. Arfiputri et al., Afr., J. Infect. Dis.

    African Journals Online (AJOL)

    Dharin Serebrina Arfiputri

    2017-10-20

    Oct 20, 2017 ... Diagnosis of VVC are from history taking, physical examination (Linhares et al, 2001; ... From the appearance of vaginal discharge usually minimal, ... (69.48%), and the rest are not yet married, divorce and widow, not yet.

  10. Ayinmode et al., Afr., J. Infect. Dis.

    African Journals Online (AJOL)

    Ayinmode, Adekunle

    Brucella abortus antibodies using Rose Bengal test and Competitive Enzyme Linked ... milk production in both dairy and beef cattle (Hernandez et al., 2001; Dubey and Schares, 2011). ..... Institut National de la Recherche Agronomique. Paris ...

  11. PEMBARUAN MASLAḤAH DALAM MAQĀṢID AL- SHARĪ‘AH: TELAAH HUMANISTIS TENTANG AL-KULLIYYĀT AL-KHAMSAH

    Directory of Open Access Journals (Sweden)

    Zaenuddin Mansyur

    2012-06-01

    Full Text Available Abstract:   In order to answer a variety of issues faced by human being in the current era, such as human rights abuses, social disintegration, and terrorism, the renewal of Islamic law in the level of theoretical and practical aspects is very urgent. This paper aims to examine one of the Islamic legal reform efforts, namely to build a more technical understanding of the concept of maṣlaḥah contained in the maqāṣīd sharī‘ah, called the al-kulliyat al-khamsah. Therefore, the concept of maṣlaḥah in ḥifẓ al-dīn is technically defined as al-ḥurriyah al-i‘tiqād (freedom of religion and schools; in ḥifẓ al-nafs as al-karamat al-insān (human being breeding; in ḥifẓ al-nasl as ḥifẓ al-usrah (wholeness and harmony of the family; in ḥifẓ al-māl as al-taḍammun al-insān (social solidarity , and in ḥifẓ al-‘aql as al-ḥuqūq as al-tarbiyāt (increasing human resources quality.Abstrak: Demi menjawab aneka persoalan zaman yang dihadapi manusia era sekarang, seperti penyelewengan terhadap HAM, disintegrasi sosial, dan terorisme, maka pembaharuan hukum Islam dalam tataran teoretis dan praktis urgen dilakukan. Tulisan ini bertujuan untuk mengkaji salah satu upaya pembaruan hukum Islam, yaitu membangun pemahaman yang lebih teknis terhadap konsep maṣlaḥah yang terkandung dalam maqāṣīd sharī‘ah, yang disebut dengan al-kulliyāt al-khamsah. Oleh karena itu, konsep maṣlaḥah dalam ḥifẓu al-dīn secara teknis dimaknai sebagai ḥurriyah al-i‘tiqād (kebebasan untuk beragama dan beraliran; dalam ḥifẓu al-nafs sebagai al-karāmāt al-insān (pemuliaan kemanusiaan; dalam ḥifẓu al-nasl sebagai ḥifẓu al-usrah (keutuhan dan keharmonisan keluarga; dalam ḥifẓu al-māl sebagai al-taḍammun al-insān (solidaritas sosial; dan dalam ḥifẓu al-‘aql sebagai al-ḥuqūq al-tarbiyāt (peningkatan sumber daya manusia.

  12. In Situ Fabrication of AlN Coating by Reactive Plasma Spraying of Al/AlN Powder

    Directory of Open Access Journals (Sweden)

    Mohammed Shahien

    2011-10-01

    Full Text Available Reactive plasma spraying is a promising technology for the in situ formation of aluminum nitride (AlN coatings. Recently, it became possible to fabricate cubic-AlN-(c-AlN based coatings through reactive plasma spraying of Al powder in an ambient atmosphere. However, it was difficult to fabricate a coating with high AlN content and suitable thickness due to the coalescence of the Al particles. In this study, the influence of using AlN additive (h-AlN to increase the AlN content of the coating and improve the reaction process was investigated. The simple mixing of Al and AlN powders was not suitable for fabricating AlN coatings through reactive plasma spraying. However, it was possible to prepare a homogenously mixed, agglomerated and dispersed Al/AlN mixture (which enabled in-flight interaction between the powder and the surrounding plasma by wet-mixing in a planetary mill. Increasing the AlN content in the mixture prevented coalescence and increased the nitride content gradually. Using 30 to 40 wt% AlN was sufficient to fabricate a thick (more than 200 µm AlN coating with high hardness (approximately 1000 Hv. The AlN additive prevented the coalescence of Al metal and enhanced post-deposition nitriding through N2 plasma irradiation by allowing the nitriding species in the plasma to impinge on a larger Al surface area. Using AlN as a feedstock additive was found to be a suitable method for fabricating AlN coatings by reactive plasma spraying. Moreover, the fabricated coatings consist of hexagonal (h-AlN, c-AlN (rock-salt and zinc-blend phases and certain oxides: aluminum oxynitride (Al5O6N, cubic sphalerite Al23O27N5 (ALON and Al2O3. The zinc-blend c-AlN and ALON phases were attributed to the transformation of the h-AlN feedstock during the reactive plasma spraying. Thus, the zinc-blend c-Al

  13. Performance of the ALS injection system

    International Nuclear Information System (INIS)

    Kim, C.H.

    1993-05-01

    The authors started commissioning the Advanced Light Source (ALS) storage ring on January 11, 1993. The stored beam reached 60 mA on March 24, 1993 and 407 mA on April 9, 1993. The fast pace of storage ring commissioning can be attributed partially to the robust injection system. In this paper they describe the operating characteristics of the ALS injection system

  14. The evolving genetic risk for sporadic ALS.

    Science.gov (United States)

    Gibson, Summer B; Downie, Jonathan M; Tsetsou, Spyridoula; Feusier, Julie E; Figueroa, Karla P; Bromberg, Mark B; Jorde, Lynn B; Pulst, Stefan M

    2017-07-18

    To estimate the genetic risk conferred by known amyotrophic lateral sclerosis (ALS)-associated genes to the pathogenesis of sporadic ALS (SALS) using variant allele frequencies combined with predicted variant pathogenicity. Whole exome sequencing and repeat expansion PCR of C9orf72 and ATXN2 were performed on 87 patients of European ancestry with SALS seen at the University of Utah. DNA variants that change the protein coding sequence of 31 ALS-associated genes were annotated to determine which were rare and deleterious as predicted by MetaSVM. The percentage of patients with SALS with a rare and deleterious variant or repeat expansion in an ALS-associated gene was calculated. An odds ratio analysis was performed comparing the burden of ALS-associated genes in patients with SALS vs 324 normal controls. Nineteen rare nonsynonymous variants in an ALS-associated gene, 2 of which were found in 2 different individuals, were identified in 21 patients with SALS. Further, 5 deleterious C9orf72 and 2 ATXN2 repeat expansions were identified. A total of 17.2% of patients with SALS had a rare and deleterious variant or repeat expansion in an ALS-associated gene. The genetic burden of ALS-associated genes in patients with SALS as predicted by MetaSVM was significantly higher than in normal controls. Previous analyses have identified SALS-predisposing variants only in terms of their rarity in normal control populations. By incorporating variant pathogenicity as well as variant frequency, we demonstrated that the genetic risk contributed by these genes for SALS is substantially lower than previous estimates. © 2017 American Academy of Neurology.

  15. Thermoluminescence properties of AlN ceramics

    DEFF Research Database (Denmark)

    Trinkler, L.; Christensen, P.; Agersnap Larsen, N.

    1998-01-01

    The paper describes thermoluminescence (TL) properties of AlN:Y2O3 ceramics irradiated with ionising radiation. A high TL sensitivity of AlN:Y2O3 ceramics to radiation encouraged a study of the AlN ceramics for application as a dosimetric material. The paper presents experimental data on: glow...... curve, emission spectrum, dose response, energy dependence, influence of heating rate and fading rate. The measured TL characteristics were compared with those of well-known, widely used TLDs, i.e. LiF:Mg,Ti, LiF:Mg,Cu,P and Al2O3:C. It is concluded that AlN:Y2O3 ceramics showing a radiation sensitivity...... which is approximately 50 times greater than that of LiF:Mg,Ti is an interesting dosimetry material; however due to a high fading rate of the TL of AlN:Y2O3 on storage at room temperature, a further development of the material for improving the fading characteristics is needed for its application...

  16. Clinical trials for neuroprotection in ALS.

    Science.gov (United States)

    Siciliano, G; Carlesi, C; Pasquali, L; Piazza, S; Pietracupa, S; Fornai, F; Ruggieri, S; Murri, L

    2010-07-01

    Owing to uncertainty on the pathogenic mechanisms underlying motor neuron degeneration in amyotrophic lateral sclerosis (ALS) riluzole remains the only available therapy, with only marginal effects on disease survival. Here we review some of the recent advances in the search for disease-modifying drugs for ALS based on their putative neuroprotective effetcs. A number of more or less established agents have recently been investigated also in ALS for their potential role in neuroprotection and relying on antiglutamatergic, antioxidant or antiapoptotic strategies. Among them Talampanel, beta-lactam antibiotics, Coenzyme Q10, and minocycline have been investigated. Progress has also been made in exploiting growth factors for the treatment of ALS, partly due to advances in developing effective delivery systems to the central nervous system. A number of new therapies have also been identified, including a novel class of compounds, such as heat-shock protein co-inducers, which upregulate cell stress responses, and agents promoting autophagy and mitochondriogenesis, such as lithium and rapamycin. More recently, alterations of mRNA processing were described as a pathogenic mechanism in genetically defined forms of ALS, as those related to TDP-43 and FUS-TLS gene mutations. This knowledge is expected to improve our understanding of the pathogenetic mechanism in ALS and developing more effective therapies.

  17. The fecal microbiome of ALS patients.

    Science.gov (United States)

    Brenner, David; Hiergeist, Andreas; Adis, Carolin; Mayer, Benjamin; Gessner, André; Ludolph, Albert C; Weishaupt, Jochen H

    2018-01-01

    Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative motor neuron disease accompanied by both systemic and central nervous system-specific inflammation as well as deregulated energy metabolism. These potential pathogenetic factors have recently been found to mutually interact with the gut microbiota, raising the hypothesis of a link between microbiome alterations and ALS pathogenesis. The aim of our study was to assess whether ALS is associated with an altered composition of the fecal microbiota. We compared the fecal microbiota of 25 ALS patients with 32 age- and gender-matched healthy persons using 16S rRNA gene sequencing analysis. Confounding factors and secondary disease effects on the microbiome were minimized by selection of patients without dysphagia, gastrostomy, noninvasive ventilation, or reduced body mass index. Comparing the 2 carefully matched groups, the diversity and the abundance of the bacterial taxa on the different taxonomic levels as well as PICRUSt-predicted metagenomes were almost indistinguishable. Significant differences between ALS patients and healthy controls were only observed with regard to the overall number of microbial species (operational taxonomic units) and in the abundance of uncultured Ruminococcaceae. Conclusively, ALS patients do not exhibit a substantial alteration of the gut microbiota composition. Copyright © 2017 Elsevier Inc. All rights reserved.

  18. Heterogeneous nucleation of solid Al from the melt by Al 3 Ti : Molecular dynamics simulations

    KAUST Repository

    Wang, Junsheng; Horsfield, Andrew; Lee, Peter D.; Brommer, Peter

    2010-01-01

    It has been known experimentally for some time that Al3 Ti is a powerful nucleant for the solidification of aluminum from the melt; however, a full microscopic understanding is still lacking. To develop this understanding, we have performed molecular dynamics simulations of the nucleation and early stages of growth using published embedded atom method potentials for Al-Ti, but modified by us to stabilize the D 022 structure. We discover that Al3 Ti can indeed be very effective in promoting the growth of solid Al but the manner in which growth takes place depends sensitively on the surface on which the Al nucleates. In particular, complete growth of solid Al from the liquid on the (001) and (110) surfaces of Al3 Ti occurs at a lower temperature than on the (112) surface. This anisotropy agrees with observations in previous experiments. We explain this observation in terms of interfacial energies. On the preferential (111) surface of Al the solid-liquid interfacial energy is highest while the solid-vacuum energy is lowest. Our simulations also show that the extent of ordering taking place in liquid Al close to the Al 3 Ti substrate above the melting point correlates well with the effectiveness of the substrate as a nucleant below the melting temperature: this could provide a computationally efficient scheme to identify good nucleants. © 2010 The American Physical Society.

  19. Compressive performance and crack propagation in Al alloy/Ti{sub 2}AlC composites

    Energy Technology Data Exchange (ETDEWEB)

    Hanaor, D.A.H., E-mail: dorian.hanaor@sydney.edu.au [School of Civil Engineering, University of Sydney, Sydney, NSW 2006 (Australia); Hu, L. [Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011 (United States); Kan, W.H.; Proust, G. [School of Civil Engineering, University of Sydney, Sydney, NSW 2006 (Australia); Foley, M. [Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, NSW 2006 (Australia); Karaman, I.; Radovic, M. [Department of Materials Science and Engineering, Texas A& M University, College Station, TX 77843 (United States)

    2016-08-30

    Composite materials comprising a porous Ti{sub 2}AlC matrix and Al 6061 alloy were fabricated by a current-activated pressure assisted melt infiltration process. Coarse, medium and fine meso-structures were prepared with Al alloy filled pores of differing sizes. Materials were subjected to uniaxial compressive loading up to stresses of 668 MPa, leading to the failure of specimens through crack propagation in both phases. As-fabricated and post-failure specimens were analysed by X-ray microscopy and electron microscopy. Quasi-static mechanical testing results revealed that compressive strength was the highest in the fine structured composite materials. While the coarse structured specimens exhibited a compressive strength of 80% relative to this. Reconstructed micro-scale X-ray tomography data revealed different crack propagation mechanisms. Large planar shear cracks propagated throughout the fine structured materials while the coarser specimens exhibited networks of branching cracks propagating preferentially along Al alloy-Ti{sub 2}AlC phase interfaces and through shrinkage pores in the Al alloy phase. Results suggest that control of porosity, compensation for Al alloy shrinkage and enhancement of the Al alloy-Ti{sub 2}AlC phase interfaces are key considerations in the design of high performance metal/Ti{sub 2}AlC phase composites.

  20. The formation of AlB2 in an Al-B master alloy

    International Nuclear Information System (INIS)

    Wang Xiaoming

    2005-01-01

    The formation of borides in an Al-3 wt.%B master alloy, produced via chemical reactions of KBF 4 and aluminium has been investigated. The chemical reactions produce boron, which dissolves into molten aluminium and subsequently forms aluminium borides. Backscattered electron imaging (BEI) of the Al-3 wt.%B master alloy under a scanning electron microscope (SEM) revealed the presence of two types of phases that contain different levels of boron. Combined with X-ray diffraction (XRD) results, the two types of phases are identified as AlB 2 on AlB 12 . This gives a direct evidence for a peritectic reaction of AlB 12 and aluminium, which produces AlB 2 . The thermodynamic properties of the reactions that may be involved are examined, and the presence of AlB 12 phase in the master alloy explained. The observed microstructure is explained according to the peritectic reaction in an Al-B phase diagram. The stability of AlB 2 and AlB 12 at lower temperature than 975 deg. C is clarified

  1. Heterogeneous nucleation of solid Al from the melt by Al 3 Ti : Molecular dynamics simulations

    KAUST Repository

    Wang, Junsheng

    2010-10-27

    It has been known experimentally for some time that Al3 Ti is a powerful nucleant for the solidification of aluminum from the melt; however, a full microscopic understanding is still lacking. To develop this understanding, we have performed molecular dynamics simulations of the nucleation and early stages of growth using published embedded atom method potentials for Al-Ti, but modified by us to stabilize the D 022 structure. We discover that Al3 Ti can indeed be very effective in promoting the growth of solid Al but the manner in which growth takes place depends sensitively on the surface on which the Al nucleates. In particular, complete growth of solid Al from the liquid on the (001) and (110) surfaces of Al3 Ti occurs at a lower temperature than on the (112) surface. This anisotropy agrees with observations in previous experiments. We explain this observation in terms of interfacial energies. On the preferential (111) surface of Al the solid-liquid interfacial energy is highest while the solid-vacuum energy is lowest. Our simulations also show that the extent of ordering taking place in liquid Al close to the Al 3 Ti substrate above the melting point correlates well with the effectiveness of the substrate as a nucleant below the melting temperature: this could provide a computationally efficient scheme to identify good nucleants. © 2010 The American Physical Society.

  2. Conductas sexuales de riesgo y actividades preventivas frente al cáncer de cuello uterino en mujeres universitarias vacunadas frente al VPH

    Directory of Open Access Journals (Sweden)

    Ana Fernández-Feito

    2018-05-01

    Full Text Available Resumen: Objetivo: Estimar la asociación entre la vacunación frente al virus papiloma humano (VPH y las conductas sexuales de riesgo, así como la participación en el Programa de Detección Precoz de Cáncer de Cuello Uterino (PDPCCU. Diseño: Estudio descriptivo transversal. Emplazamiento: Facultad de Medicina y Ciencias de la Salud, Facultad de Derecho y Facultad de Economía y Empresa (Universidad de Oviedo. Participantes: Estudiantes universitarias. Mediciones principales: Se recogió información sobre métodos anticonceptivos, conducta sexual, conocimientos sobre VPH y participación en el PDPCCU. Se estimaron proporciones y odds ratio (OR con sus correspondientes intervalos de confianza al 95% (IC 95%. Resultados: El 67,7% de la muestra estaban vacunadas frente al VPH. Un total de 216 mujeres (65,3% eran sexualmente activas. El 67,6% utilizaba un método de barrera en la relación actual, siendo menos frecuente entre las mujeres no vacunadas (54,9% frente al 75,4% en estudiantes vacunadas (p = 0,002. El riesgo de mantener al menos una conducta sexual de riesgo era mayor entre las mujeres no vacunadas: OR 2,29 (IC 95%: 1,29-4,07. La probabilidad de realizar una citología dentro del PDPCCU fue mayor entre las mujeres no vacunadas: OR 2,18 (IC 95%: 1,07-4,47. Conclusiones: La prevalencia de conductas sexuales de riesgo en mujeres no vacunadas es elevada y se relaciona con la no utilización de métodos de barrera. La vacunación frente al VPH puede influir en la conducta sexual y en la participación en PDPCCU. Se debería reforzar la información que reciben los jóvenes sobre anticoncepción, enfermedades de transmisión sexual y prevención del cáncer. Abstract: Aim: To estimate the association between the human papillomavirus (HPV vaccine and sexual risk behaviour, as well as the participation in the Cervical Cancer Screening Program (CCSP. Design: Cross-sectional study. Location: School of Medicine and Health Sciences

  3. Predicting glass-forming compositions in the Al-La and Al-La-Ni systems

    International Nuclear Information System (INIS)

    Gargarella, P.; de Oliveira, M.F.; Kiminami, C.S.; Pauly, S.; Kuehn, U.; Bolfarini, C.; Botta, W.J.; Eckert, J.

    2011-01-01

    Research highlights: → The glass-forming ability of the Al-La and Al-La-Ni systems was studied using the λ* and the λ.Δe criteria. → Both criteria predicted with just 1% at. of error the best glass-former verified so far in the Al-La system. → Four new glass-former compositions could be predicted in the Al-La-Ni system using the λ.Δe criterion. → The best glass-former reported so far in the Al-La-Ni system was found. - Abstract: In this work, a criterion considering the topological instability (λ) and the differences in the electronegativity of the constituent elements (Δe) was applied to the Al-La and Al-Ni-La systems in order to predict the best glass-forming compositions. The results were compared with literature data and with our own experimental data for the Al-La-Ni system. The alloy described in the literature as the best glass former in the Al-La system is located near the point with local maximum for the λ.Δe criterion. A good agreement was found between the predictions of the λ.Δe criterion and literature data in the Al-La-Ni system, with the region of the best glass-forming ability (GFA) and largest supercooled liquid region (ΔT x ) coinciding with the best compositional region for amorphization indicated by the λ.Δe criterion. Four new glassy compositions were found in the Al-La-Ni system, with the best predicted composition presenting the best glass-forming ability observed so far for this system. Although the λ.Δe criterion needs further refinements for completely describe the glass-forming ability in the Al-La and Al-La-Ni systems, the results demonstrated that this criterion is a good tool to predict new glass-forming compositions.

  4. Phase relationships in the Al-rich region of the Al-Cu-Er system

    International Nuclear Information System (INIS)

    Zhang Ligang; Masset, Patrick J.; Cao Fuyong; Meng Fangui; Liu Libin; Jin Zhanpeng

    2011-01-01

    Research highlights: → One ternary phase τ 1 -Al 8 Cu 4 Er in Al-rich region with a composition of 59.4-60.4 at.% Al, 32.2-33.8 at.% Cu, and 6.4-7.7 at.% Er is observed in both as-cast and annealed alloys. At 673 K, the binary Al 3 Er phase dissolves about 3.51 at.% Cu. → The calculated solidification paths (based on the CALPHAD method) of as-cast alloys are in agreement with the experimental results. → It can be found that the resultant thermodynamic database can be applied to case studies of as-cast alloys, showing that the literature thermodynamic description of the Al-Cu-Er system is reliable as a working basis for computer-assisted alloy design. - Abstract: The Al-rich region of the ternary Al-Cu-Er system is investigated using the method of X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy. Phase equilibria in the Al-rich region of the Al-Cu-Er system at 673 K have been obtained, and the microstructures of as-cast alloys in the Al-rich region are also investigated. One ternary phase τ 1 -Al 8 Cu 4 Er with a composition of 59.4-60.4 at.% Al, 32.2-33.8 at.% Cu, and 6.4-7.7 at.% Er is observed in both as-cast and annealed alloys. At 673 K, the binary Al 3 Er phase dissolves about 3.51 at.% Cu. The calculated solidification paths (based on the CALPHAD method) of as-cast alloys are in agreement with the experimental results.

  5. Liquidus projection of the Nb-Cr-Al system near the Al3(Nb,Cr) + Cr(Al,Nb) eutectic region

    International Nuclear Information System (INIS)

    Souza, S.A.; Ferrandini, P.L.; Nunes, C.A.; Coelho, A.A.; Caram, R.

    2006-01-01

    The system Nb-Cr-Al was investigated in the region near the Al 3 (Nb,Cr) + Cr(Al,Nb) eutectic and the liquidus projection of that region was determined based on the microstructural characterization of arc melted alloys. The characterization utilized scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), differential thermal analysis (DTA) and X-ray diffraction (XRD). The results allowed one to determine three primary solidification liquidus surfaces ((Cr,Al) 2 Nb, Cr(Al,Nb) and Al 3 (Nb,Cr)), that are originated from the binary systems Cr-Nb, Cr-Al and Al-Nb. It is proposed the occurrence of the invariant reaction L + (Cr,Al) 2 Nb ↔ Al 3 (Nb,Cr) + Cr(Al,Nb) and of a point of minimum, which involves a three phase reaction, L ↔ Al 3 (Nb,Cr) + Cr(Al,Nb). All alloys studied showed formation of the Al 3 (Nb,Cr) + Cr(Al,Nb) eutectic as the last solidification step with Al(Nb)Cr 2 precipitating from Cr(Al,Nb)

  6. Effect of elevated Al and pH on the growth and root morphology of Al-tolerant and Al-sensitive wheat seedlings in an acid soil

    Directory of Open Access Journals (Sweden)

    Md. Toufiq Iqbal

    2014-03-01

    Full Text Available Aluminium ion (Al3+ toxicity and hydrogen ion (H+ activity are the major constraints for plant growth in acid soil. This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8 and Al-sensitive (ES8 wheat seedlings. Different levels of AlCl3 and CaCO3 were added to the soils to manipulate soil pH and extractable Al. The results showed that the bulk soil pH remained constant at pH 4.1 with further applications of AlCl3, and that the seedlings died at the 200 mg AlCl3/kg treatments. The ET8 seedlings responded better than the ES8 seedlings in both low and high Al and pH. The ET8 seedlings had higher root surface areas and root tip numbers than the ES8 seedlings in the Al treatment. In contrast, the ES8 had higher root diameters than the ET8 seedlings due to the elevated Al supply. Apoplast Al increased with the increase of soil available extractable Al, and declined with the decrease of soil extractable Al. The ET8 seedlings accumulated more Al in their apoplast than the ES8 seedlings. This study concluded that accumulation of Al in the apoplast is also involved in Al tolerance mechanism with the addition of organic acid exudation.

  7. Morbilidad asociada al empleo del acceso vascular profundo, 2006 Morbidity associated with the use of deep vascular approach, 2006

    Directory of Open Access Journals (Sweden)

    Darelys Baños Sánchez

    2009-03-01

    Full Text Available Los catéteres intravasculares se han convertido en un instrumento indispensable en las Unidades de Cuidados Intensivos Pediátricos, (U.C.I.P. Se analizó la morbimortalidad asociada al empleo de Abordajes Vasculares Profundos (AVP en la UCIP, Hospital Pediátrico Provincial Docente Pepe Portilla, 2006. Investigación aplicada descriptiva, observacional, prospectiva y longitudinal desde el 1ro de enero al 31 de diciembre, 2006. Se confeccionó un modelo de recolección de datos para la recogida de las variables evaluadas relacionadas con la muestra. Se aplicaron los métodos bioestadísticas adecuados. Todos los pacientes ingresados, a los que se les realizaron A.V.P. Alta incidencia en el uso de estos procederes prevaleciendo en los menores de un año, por más de 10 días, con la infección como principal complicación y poca relación de estos procederes con las causas de fallecimiento. Estos procederes mantienen su alta prevalencia en las UCIP. La infección es la complicación más frecuente en esta UCIP. No hay relación entre los A.V.P y las causas de fallecimiento.Intravascular catheters have become into an indispensable tool in the Paediatric Intensive Care Units (PICU. Morbidity associated with the use of Deep Vascular Approaches during 2006 in the PICU of "Pepe Portilla" Provincial University Paediatric Hospital was analyzed. A descriptive, observational, prospective and longitudinal research was carried out from January 1 to December 31, 2006. A model to collect the data and the variables evaluated related to the sample was created. Suitable bio-statistical methods were applied. All in-patients. In-patients who underwent to Deep Vascular Approach. High incidence in the use of these procedures that prevailed in children under one year old for more than 10 days suffering from an infection as a main complication, and not much relation to the use of these procedures with the cause of death was observed. The use of these procedures

  8. Profesor Doctor. Hernando Groot Lievano. Premio Nacional al Mérito Científico 2001. Modalidad "Vida y Obra"

    Directory of Open Access Journals (Sweden)

    Juan Mendoza Vega

    2001-12-01

    Full Text Available

    La Asociación Colombiana para el Avance de la Ciencia, en este primer año del Siglo XXI y del Tercer Milenio de Occidente, otorga el "Premio Nacional al Mérito Científico 2001", en la modalidad "Vida y Obra de un Científico", al destacado médico colombiano doctor Hernando Groot Liévano
    Nació el doctor Groot en Bogotá, Colombia, el 25 de Julio de 1917 y recibió su grado de Doctor en Medicina y Cirugía por la Universidad Nacional de Colombia en 1939; obtuvo luego el Master en Salud Pública, Cum Laude, en la Universidad de Harvard (1942 y Diploma de Alta Gerencia en la Universidad de Los Andes de Bogotá (1968.
    Su larga trayectoria de investigador se inició en 1935, cuando obtuvo por concurso la posición de "preparador" en la cátedra de Parasitología que regentaba el destacado científico César Uribe Piedrahita; en 1937 hizo su primera publicación, "Frecuencia de los parásitos intestinales en los enfermos del Hospital San Juan de Dios de Bogotá", y desde entonces ha realizado estudios sobre temas relativos a la virología, la microbiología y las enfermedades tropicales, muchas de ellas pioneras en el mundo como la demostración de que el flagelado Trypanosoma rangeli no es patógeno para el ser humano, la identificación de una nueva bacteria (descrita antes solamente en aves y serpientes como patógena para nuestra especie, el hallazgo de una forma antes desconocida del virus de la encefalitis equina venezolana y la demostración de que la vacuna contra la fiebre amarilla deja inmunidad por más de diez años, lo que permitió duplicar el período internacional de validez para esta vacuna.
    Demostró también el doctor Groot que muchas de las frecuentes fiebres que sufren las personas en el Alto Magdalena son en realidad episodios de dengue, y estudió con detalle las dos primeras grandes epidemias de esta enfermedad que se presentaron en Colombia...

  9. Factores asociados al ejercicio de la sexualidad de las y los adolescentes escolarizados de Cartagena – Colombia 2008

    Directory of Open Access Journals (Sweden)

    Carmen Elena Díaz Montes

    2014-03-01

    Full Text Available Title: Associated factors in the sexual practices of school adolescents of Cartagena- Colombia 2008Objetivo: Establecer las prácticas sexuales y los factores asociados al ejercicio de la sexualidad de las y los adolescentes escolarizados en Cartagena. Metodología: Estudio transversal, población 104.088 adolescentes estudiantes de secundaria en colegios oficiales y privados de Cartagena. Muestra 1.035 adolescentes, intervalo de confianza 95%, error 2%. Muestreo; multietapico. Se utilizaron una escala de conocimientos y actitudes y la escala Francis para valorar religiosidad. Resultados: La edad promedio de inicio de relaciones sexuales fue de 14.1 años, el 17% de los adolescentes ha tenido relaciones sexuales. Tener relaciones sexuales se asocia con ser varón, mayor grado de escolaridad, consumir cigarrillo, pertenecer a un grupo social, desigualdad de género, tener pareja y considerarla estable. Tener relaciones sexuales es más frecuente, en adolescentes de colegios públicos que privados. Conclusión: de los veintidós factores estudiados, ocho factores se mantuvieron fuertemente asociados al inicio de relaciones sexuales.AbstractObjective: To establish the sexual practices and the associated factors of the sexual behavior of school adolescents of Cartagena. Methodology: Transversal study, population 104.088 adolescent students of Secondary School of Public and private schools of Cartagena. Sample 1.035 adolescents, confidence level 95 %, and error 2 %. Sampling: multistage. Two scales of knowledge and attitudes were used, and the Francis scale. Results: The average age to start sexual relations was 14.1, 17% of the adolescents have had sexual relationships. To have sexual relations is associated significantly with the fact of being male, being in a higher grade, cigarette consumption, belonging to a social group, gender inequality, having a partner and considering him/her stable. Sexual relations are more common in public

  10. Trombosis portal y mesentérica asociada al déficit de la proteína S Portal and mesenteric thrombosis associated with protein S deficiency

    Directory of Open Access Journals (Sweden)

    J. A. Chirinos Vega

    2008-02-01

    Full Text Available Introducción: la causa más frecuente de trombosis portal (TP es la cirrosis hepática, mientras que los estados hipercoagulables son raramente identificados como etiología de la TP. Presentamos un caso de TP y mesentérica secundaria al déficit de la proteína S (pS. Caso clínico: paciente mujer de 74 años, que debuta con dolor abdominal difuso de 2 semanas de evolución y hemorragia digestiva alta tipo melena secundaria a varices esofágicas. En el estudio se objetiva un hígado heterogéneo, esplenomegalia y ascitis, así como una trombosis portal completa no oclusiva del hilio hepático y de sus ramas y de la vena mesentérica superior con circulación colateral. El estudio etiológico de hepatopatía fue negativo, incluyendo una biopsia hepática que mostraba cambios arquitecturales secundarios al flujo hemático disminuido compatible con hipertensión portal no cirrótica. El estudio de hipercoagulabilidad fue positivo para un déficit de proteína S. pS libre 56%, pS total 107%. Desde entonces se inició tratamiento anticoagulante sin presentar descompensaciones posteriores. Discusión: la trombosis portal suele manifestarse con síntomas inespecíficos, siendo la forma de presentación más frecuente la hemorragia digestiva alta como el caso que nos ocupa. La cirrosis es una de las causas más frecuentes de trombosis portal, sin embargo existe hasta un 65% de estos pacientes que tienen una enfermedad protrombótica asociada, como es el déficit de proteína S. Nuestro caso remarca la importancia de realizar estudios de factores trombogénicos en pacientes con TP, incluso cuando la etiología se puede atribuir a una cirrosis.Introduction: liver cirrhosis is the main cause of portal thrombosis (PT, while hypercoagulability syndromes are rarely found as the etiology of PT. We report a case of portal and mesenteric thrombosis secondary to protein S deficiency. Case report: a 74-year-old woman was admitted with melena secondary to upper

  11. Journal Tunisien d'ORL et de Chirurgie Cervico-Faciale

    African Journals Online (AJOL)

    The aim of the journal is to publish original papers on the field of Otorhinolaryngology & face and neck surgery. Our goal after 10 years of our journal publication is a wider diffusion to the African colleagues. The editors also encourage the submission of articles from African French-speaking countries. Our web site allows a ...

  12. Brachytherapy in head and neck cancers; Curietherapie des cancers de la sphere ORL

    Energy Technology Data Exchange (ETDEWEB)

    Mazeron, J.J.; Noel, G.; Simon, J.M.; Racadot, S.; Jauffret, E. [Groupe Hospitalier la Pitie-Salpetriere, Centre des Tumeurs, 75 - Paris (France)

    2003-02-01

    Experience accumulated over several decades with radiation of Head and Neck tumours by irradiation has demonstrated the need for a high tumour dose to achieve local control. With external beam irradiation alone, it is difficult to spare adjacent normal tissues, resulting in undesirable late effects on the salivary glands; mandible, and muscles of mastication. Interstitial implantation is ideally suited to deliver a high dose limited to the volume of the primary tumor, thus minimizing sequels. A large experience has been accumulated with low dose rate (LDR) brachytherapy in treatment of carcinoma of oral cavity, oropharynx, and nasopharynx. Recent analysis of large clinical series provided data indicating that modalities of low dose rate brachytherapy should be optimized in treating these tumors for increasing therapeutic ratio. Low dose rate brachytherapy is now challenged by high dose rate (HDR) brachytherapy and pulsed dose rate (PDR) brachytherapy. Preliminary results obtained with these two last modalities are discussed regarding to those of low dose rate brachytherapy. (authors)

  13. Sarcome d'ewing du rocher | Kaffel | Journal Tunisien d'ORL et de ...

    African Journals Online (AJOL)

    Introduction : Primary cranial Ewing's sarcoma is rare. This tumor was first described in 1921, since then, only a few cases have been reported in the literature. Aim: the aim of this study is to report the clinical and therapeutic aspects of primary cranial Ewing's sarcoma. Method: We report a case of Ewing's sarcoma of the ...

  14. Journal Tunisien d'ORL et de Chirurgie Cervico-Faciale - Vol 26 ...

    African Journals Online (AJOL)

    Sarcome d'ewing- Une localisation exceptionnelle : Le rocher · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. K Khamassi, N Jlassi, SB Ghamra, H Jaafoura, R Lahiani, D Nejah, MB Salah, N Kaffel, M Ferjaoui, 49-52 ...

  15. Manifestations orl au cours de l'infection au VIH-SIDA au Chu de Lome

    African Journals Online (AJOL)

    The ENT symptoms found during HIV infection are diverse and can constitute the motive for consultation. We therefore deemed it necessary to conduct this study in order to see how these symptoms appear in our country. This is a retrospective study conducted over a period of ten years and focussed on the files of patients ...

  16. MANIfESTATIONS ORL dU RGO ChEz L'ENfANT

    African Journals Online (AJOL)

    7 déc. 2011 ... Le volume de salive déglutie et sa concentration en bicarbonates semblent jouer un rôle primordial dans la clairance œsophagienne (4, 6). vidange gastrique : Des études récentes ont montré qu'il existait une gastro- parésie et des troubles de la motricité gastro-intestinale chez des enfants atteints de RGO ...

  17. Leomyosarcome du larynx | Abid | Journal Tunisien d'ORL et de ...

    African Journals Online (AJOL)

    Le leiomyosarcome laryngé est une tumeur musculaire lisse maligne rare. Il représente moins de 1% de toutes les tumeurs malignes laryngées. Nous rapportons un nouveau cas chez un patient de 63 ans. Le traitement a consisté en une laryngectomie totale avec curage ganglionnaire suivie de radiothérapie. A travers ce ...

  18. Maladie de kimura: À propos d'un cas | Dib | Journal Tunisien d'ORL ...

    African Journals Online (AJOL)

    Introduction : Mots-clés : Maladie de Kimura, parotide, chirurgie.La maladie de Kimura ou lymphogranulome éosinophile est une pathologie inflammatoire chronique très rare, d'étiologie inconnue. Nous rapportons un cas de maladie de Kimura à localisation parotidienne et à travers une revue de la littérature, rappelons les ...

  19. Journal Tunisien d'ORL et de Chirurgie Cervico-Faciale: Advanced ...

    African Journals Online (AJOL)

    Search tips: Search terms are case-insensitive; Common words are ignored; By default only articles containing all terms in the query are returned (i.e., AND is implied); Combine multiple words with OR to find articles containing either term; e.g., education OR research; Use parentheses to create more complex queries; e.g., ...

  20. Revitalization of Orlík Reservoir – case study of a regional restoration project

    Czech Academy of Sciences Publication Activity Database

    Očásková, I.; Vrba, Jaroslav; Průša, L.

    2014-01-01

    Roč. 4, č. 1 (2014), s. 77-82 ISSN 1805-0174 Grant - others:GA MŠk(CZ) CZ.1.07/2.4.00/17.0130 Institutional support: RVO:60077344 Keywords : Vltava river basin * eutrophication * socio-economic transformation * regional governance * science-based sustainable strategy Subject RIV: DJ - Water Pollution ; Quality

  1. THE DISCREPANT KINEMATICS OF ORLs AND CELs IN NGC 7009 AS A FUNCTION OF IONIZATION STRUCTURE

    Energy Technology Data Exchange (ETDEWEB)

    Richer, Michael G. [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Apartado Postal 106, 22800 Ensenada, BC (Mexico); Georgiev, Leonid; Torres-Peimbert, Silvia [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-264, CP 04510 Mexico DF (Mexico); Arrieta, Anabel, E-mail: richer@astrosen.unam.mx, E-mail: silvia@astroscu.unam.mx, E-mail: anabel.arrieta@ibero.mx [Departamento de Fisica y Matematicas, Universidad Iberoamericana, Prolongacion Paseo de la Reforma 880, Lomas de Santa Fe, CP 01210 Mexico DF (Mexico)

    2013-08-20

    We present spatially and velocity-resolved echelle spectroscopy for NGC 7009 obtained with the UVES spectrograph at the European Southern Observatory's Very Large Telescope. Our objective is to analyze the kinematics of emission lines excited by recombination and collisions with electrons to determine whether similarities or differences could be useful in elucidating the well-known abundance discrepancy derived from them. We construct position-velocity maps for recombination, fluorescence, charge transfer, and collisionally excited lines. We find a plasma component emitting in the C II, N II, O II, and Ne II recombination lines whose kinematics are discrepant: they are incompatible with the ionization structure derived from all other evidence and the kinematics derived from all of these lines are unexpectedly very similar. We find direct evidence for a recombination contribution to [N II] {lambda}5755. Once taken into account, the electron temperatures from [N II], [O III], and [Ne III] agree at a given position and velocity. The electron densities derived from [O II] and [Ar IV] are consistent with direct imaging and the distribution of hydrogen emission. The kinematics of the C II, N II, O II, and Ne II lines does not coincide with the kinematics of the [O III] and [Ne III] forbidden emission, indicating that there is an additional plasma component to the recombination emission that arises from a different volume from that giving rise to the forbidden emission from the parent ions within NGC 7009. Thus, the chemical abundances derived from either type of line are correct only for the plasma component from which they arise. Apart from [N II] {lambda}5755, we find no anomaly with the forbidden lines usually used to determine chemical abundances in ionized nebulae, so the abundances derived from them should be reliable for the medium from which they arise.

  2. Journal Tunisien d'ORL et de Chirurgie Cervico-Faciale - Vol 31 ...

    African Journals Online (AJOL)

    Bacteriologie de l'otite moyenne suppuree chronique de l'enfant au mali · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. HB Sacko, RK Dembele, AO Diallo, MS Coulibaly, N Telly, 34-36 ...

  3. Disordered crystal structure of 20H-AlON, Al10O3N8

    International Nuclear Information System (INIS)

    Banno, Hiroki; Funahashi, Shiro; Asaka, Toru; Hirosaki, Naoto; Fukuda, Koichiro

    2015-01-01

    The disordered crystal structure of 20H-AlON (Al 10 O 3 N 8 ) was determined by combined use of X-ray powder diffraction and transmission electron microscopy. The title compound is hexagonal with space group P6 3 /mmc (Z=2) and the unit-cell dimensions are a=0.307082(5) nm, c=5.29447(8) nm and V=0.432376(12) nm 3 . The structural model showed the positional disordering of three of the six Al sites in the unit cell. The reliability indices calculated from the Rietveld method were R wp =6.97%, S (=R wp /R e )=1.68, R p =5.45%, R B =5.13% and R F =4.56%. We interpreted the disordered structure of 20H-AlON as a statistical average of six different types of ordered structural configurations, which are composed of an octahedral [Al(O, N) 6 ] layer and tetrahedral [Al(O, N) 4 ] layers. We demonstrated the high correlations between the hexagonal unit-cell dimensions and the octahedral layer concentrations for AlON and SiAlON polytypoids. - Graphical abstract: Variations of a and c/(n O +n T ) with n O /(n O +n T ). The a and c are the hexagonal unit-cell dimensions of AlON, SiAlON and AlN. The n O and n T are, respectively, the numbers of octahedral and tetrahedral layers in the unit cells. The unit-cell dimensions in literature are plotted in black plus for AlON and black cross for SiAlON. The unit-cell dimensions of AlN are a=0.3110 nm and c=0.4980 nm. - Highlights: • Crystal structure of Al10O3N8 is determined by laboratory X-ray powder diffraction. • The atom arrangements are represented by the split-atom model. • Six types of ordered atom arrangements are derived from the disordered structure. • Hexagonal unit-cell dimensions changed systematically for AlON and SiAlON compounds

  4. Ilhaq al-Masa'il bi Nazairiha dan Penerapannya dalam Bahth al-Masa'il

    Directory of Open Access Journals (Sweden)

    Luthfi Hadi Aminuddin

    2013-11-01

    Full Text Available Abstract: Ilh}a>q al-Masa>’il bi Naz}a>iriha is one of the methods used by Nahdlatul Ulama in resisting the opinion based on (manhaji analytical concept of Islamic jurisprudence (the solution for complex social problems as the main purpose of Islamic shari’ah. As known that, up to now, ilh}a>q has been understood as a process of answering a new case by the way of equating to the old one which is written in the book called al-mu’tabarah. Such ilh}a>q has got many criticisms both from the definitions, procedures and its epistemogical footing. This paper is about to reveal how the NU clerics of Islam understand the concept of Ilh}a>q}, what its epistemological footing was and how the concept was applied in discussing many cases (bah}th al-masa>’il. Based on the writer’s study to several documents of decision results of NU that Ilh}a>q did not only simplify to equate the new cases with the old ones that have been freely discussed in the books of al-mu’tabarah, but both cases should have similar legal substance, that is, both should be under the decrees of laws of al-qawa> ‘id al-fiqhi>yah. Thus, Ilh}a>q is actually answering the problem by applying al-qawa>‘id al-fiqhi>yah, whereas the formulation al-qawa>‘id al-fiqhi>yah itself was set off from the examination of a number of furu>’ generated by qiya> s. This paper also found three variations of the implementation of Ilh}a>q in bah}th al-masa>’il. First, the application of Ilh}a>q was without mentioning al-qawa> ‘id al-fiqhi>yah which covered new cases (mulh}aq and the old case law that has been known in the books of fiqh (mulh}aq bih/attached to. Second, the application of Ilh}a>q was accompanied by mentioning mulh}aq bih and al-qawa> ‘id al-fiqhi>yah. Third, the application of Ilh}a>q, was only by the mentioning al-qawa> ‘id al-fiqhi>yah.

  5. Prinsip Pendidikan Karakter dalam Islam: Studi Komparasi Pemikiran Al-Ghazali dan Burhanuddin Al-Zarnuji

    Directory of Open Access Journals (Sweden)

    Agus Setiawan

    2014-06-01

    Full Text Available The impelemtantion of character education that is done by the Indonesian government recently has been provoked by al-Ghazali and Burhanuddin al-Zarnuji long ago. It was proven by some written thoughts of al-Ghazali and Burhanuddin al-Zarnuji. They were very famous scientists in their era and widely welknown as educational experts who produced some phenomenal thoughts many people use today. Al-Ghazali and Burhanuddin al-Zarnuji lived in the era of Bani Abbasiyah monarchy, but Both of them lived in different era. Al-Ghazali was born first, then Burhanuddin al-Zarnuji. They had different mazhab, al-Ghazali went to the traditional principle of mazhab Syafi’I and Burhanuddin al-Zarnuji went to the modern principle of mazhab Hanafi. The differences, of course, would create a different thought. Still, they might have a similar principle of Islamic character education. The thoughts of character education of al-Ghazali have been poured in the “Ayyuha Walad” focusing to the students’ character building characterized by religiously obedient, skillfull of general and religious knowledge, socially helpful, affectionate, generous, good citizen, and coloring the society. Some applicable thoughts of character education of Ayyuha al-Walad of al-Gazhali to the contemporary education are: the balance of the happiness purposes of the recent life and the life after death, qana’ah and tawakal, affectionate, caring other, patience, honesty, philanthrophy, social works, generousity, democratic, peace makers, and patriotic. Those characters are also directed in the islamic character education nowdays. So that, the thoughts of al-Ghazali positively and responsively are absorbed by the Indonesian government to build the national character widely implementing in the national curriculum based on the local wisdom and the Islamic values. In the end, the students are able to live happily based on the Islamic rules by implementing the good behavior. Similar to the al

  6. Alpha and beta stabilizer character of Al in Zr-Nb-Al alloys

    International Nuclear Information System (INIS)

    Peruzzi Bardella, A.; Bolcich, J.C.

    1987-01-01

    The T β/α+β of Zr5Nb and Zr5Nb2Al (weight %) were determined in order to observe the alpha-stabilizer character of Al in ternary Zr-Nb-Al alloys. Techniques employed were change of resistivity with temperature in dynamic experiences, and metallography of samples quenched to room temperature after isothermal annealings. The T β/α+β of the ternary resulted 17 ± 8 deg C higher than that of the binary alloy. In addition, taking into account the results of previous investigations of the transformation of beta on quenching Zr-Nb-Al alloys from the beta field to room temperature, it is concluded that the beta-stabilizer character of Nb is stronger than the alpha-stabilizer character of Al in these Zr alloys, and that the Al can have important influence on the mechanical properties by the appearance of TRIP effect. (Author) [es

  7. KONSEPSI AL-QURAN DAN AL-HADITS TENTANG OPERASIONAL BANK SYARIAH

    Directory of Open Access Journals (Sweden)

    Muhammad Ardy Zaini

    2015-01-01

    Full Text Available Islam hadir dengan beberapa tujuan, diantaranya adalah terciptanya khoirul ummah dan rahmatan lil’alamin dengan al-Qur’an dan al-Hadits sebagai penuntun umat Islam demi tercapainya tujuan tersebut. Sebagai pedoman hidup, al-Qur’an dan al-Hadits memberikan berbagai petunjuk tentang keteraturan dan permasalahan hidup, termasuk didalamnya mengenai perbankan yang telah memenuhi hampir separuh sisi-sisi kehidupan manusia. Untuk memaksimal ajaran syariah secara kaffah, maka nilai-nilai yang terdapat dalam al-Quran harus mampu diturunkan pada tataran praktis. Salah satu usaha dan langkah dalam rangka menemukan formula perbankan masa depan, al-Quran dan Hadits memiliki konsepsi dalam kegiatan operasional Bank Syariah. Hal ini dilakukan untuk membentuk sikap mental atau watak yang terjabarkan dalam pola berpikir, cara berbicara, dan etika bertingkah laku, sebagai ekspresi jiwa dari manusia yang beriman dan bertakwa kepada Allah Swt. Agar umat Islam mampu menjadi umat yang unggul (khayr ummah.

  8. Effects of Al(III and Nano-Al13 Species on Malate Dehydrogenase Activity

    Directory of Open Access Journals (Sweden)

    Rong Fu Chen

    2011-05-01

    Full Text Available The effects of different aluminum species on malate dehydrogenase (MDH activity were investigated by monitoring amperometric i-t curves for the oxidation of NADH at low overpotential using a functionalized multi-wall nanotube (MWNT modified glass carbon electrode (GCE. The results showed that Al(III and Al13 can activate the enzymatic activity of MDH, and the activation reaches maximum levels as the Al(III and Al13 concentration increase. Our study also found that the effects of Al(III and Al13 on the activity of MDH depended on the pH value and aluminum speciation. Electrochemical and circular dichroism spectra methods were applied to study the effects of nano-sized aluminum compounds on biomolecules.

  9. Effects of Al(III) and nano-Al13 species on malate dehydrogenase activity.

    Science.gov (United States)

    Yang, Xiaodi; Cai, Ling; Peng, Yu; Li, Huihui; Chen, Rong Fu; Shen, Ren Fang

    2011-01-01

    The effects of different aluminum species on malate dehydrogenase (MDH) activity were investigated by monitoring amperometric i-t curves for the oxidation of NADH at low overpotential using a functionalized multi-wall nanotube (MWNT) modified glass carbon electrode (GCE). The results showed that Al(III) and Al(13) can activate the enzymatic activity of MDH, and the activation reaches maximum levels as the Al(III) and Al(13) concentration increase. Our study also found that the effects of Al(III) and Al(13) on the activity of MDH depended on the pH value and aluminum speciation. Electrochemical and circular dichroism spectra methods were applied to study the effects of nano-sized aluminum compounds on biomolecules.

  10. 60Co gamma radiation effect on AlGaN//AlN/GaN HEMT devices

    International Nuclear Information System (INIS)

    Wang Yanping; Luo Yinhong; Wang Wei; Zhang Keying; Guo Hongxia; Guo Xiaoqiang; Wang Yuanming

    2013-01-01

    The testing techniques and experimental methods of the 60 Co gamma irradiation effect on AlGaN/AlN/GaN high electron mobility transistors (HEMTs) are established. The degradation of the electrical properties of the device under the actual radiation environment are analyzed theoretically, and studies of the total dose effects of gamma radiation on AlGaN/AlN/GaN HEMTs at three different radiation bias conditions are carried out. The degradation patterns of the main parameters of the AlGaN/AlN/GaN HEMTs at different doses are then investigated, and the device parameters that were sensitive to the gamma radiation induced damage and the total dose level induced device damage are obtained. (authors)

  11. 27Al NMR studies of NpPd5Al2

    International Nuclear Information System (INIS)

    Chudo, H.; Sakai, H.; Tokunaga, Y.; Kambe, S.; Aoki, D.; Homma, Y.; Shiokawa, Y.; Haga, Y.; Ikeda, S.; Matsuda, T.D.; Onuki, Y.; Yasuoka, H.

    2009-01-01

    We present 27 Al NMR studies for a single crystal of the Np-based superconductor NpPd 5 Al 2 (T c =4.9K). We have observed a five-line 27 Al NMR spectrum with a center line and four satellite lines separated by first-order nuclear quadrupole splittings. The Knight shift clearly drops below T c . The temperature dependence of the 27 Al nuclear spin-lattice relaxation rate shows no coherence peak below T c , indicating that NpPd 5 Al 2 is an unconventional superconductor with an anisotropic gap. The analysis of the present NMR data provides evidence for strong-coupling d-wave superconductivity in NpPd 5 Al 2 .

  12. Potential skin involvement in ALS: revisiting Charcot's observation - a review of skin abnormalities in ALS.

    Science.gov (United States)

    Paré, Bastien; Gros-Louis, François

    2017-07-26

    Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease affecting motor neurons of the brain and spinal cord, leading to progressive paralysis and death. Interestingly, many skin changes have been reported in ALS patients, but never as yet fully explained. These observations could be due to the common embryonic origin of the skin and neural tissue known as the ectodermal germ layer. Following the first observation in ALS patients' skin by Dr Charcot in the 19th century, in the absence of bedsores unlike other bedridden patients, other morphological and molecular changes have been observed. Thus, the skin could be of interest in the study of ALS and other neurodegenerative diseases. This review summarizes skin changes reported in the literature over the years and discusses about a novel in vitro ALS tissue-engineered skin model, derived from patients, for the study of ALS.

  13. A note on Wang et al's attack on Zhang et al's multiparty quantum secret sharing

    International Nuclear Information System (INIS)

    Gao Gan

    2012-01-01

    Recently, Wang et al (2008 Phys. Lett. A 373 65) proposed an attack on Zhang et al's (2007 Opt. Commun. 269 418) multiparty quantum secret sharing scheme, in which the first and the last agent are reported to be able to cooperatively eavesdrop on all the secret messages without being detected. In this paper, we show that in Wang et al's attack, on average no more than half the secret messages can be eavesdropped. (paper)

  14. Effect of the interface in laminated composites of Al-1100 and Al-2024

    International Nuclear Information System (INIS)

    Godefroid, L.B.

    1983-01-01

    Laminated composites consisting of alternating layers of Al-1100 and Al-2024 were produced by hot rolling, with 45% Al-2024 volume fraction. These composites were subjected to cyclic thermal treatment (various numbers of cycles) and to isothermal treatment (various numbers of cycles) and to isothermal treatment (at peak temperature and for times equivalent to those of the thermal cycles. Microhardness, tensile and fatigue crack arrester modes) were studied in the initial state and after treatments. (E.G.) [pt

  15. Generation and evolution of nanoscale AlP and Al{sub 13}Fe{sub 4} particles in Al-Fe-P system

    Energy Technology Data Exchange (ETDEWEB)

    Qiao, Huan; Gao, Tong; Zhu, Xiangzhen; Wu, Yuying; Qian, Zhao; Liu, Xiangfa, E-mail: xfliu@sdu.edu.cn

    2015-02-15

    Highlights: • Diffusion and gradual solid reactions between Al and Fe{sub x}P phases in Al-Fe-P alloy were investigated. • Nanoscale AlP clusters are in-situ generated and evolve during the whole process. • This novel Al-Fe-P alloy has an excellent low-temperature refining performance on hypereutectic Al-Si alloy. - Abstract: In this paper, the gradual solid reactions between Al and Fe{sub x}P phases in Al-Fe-P alloy were investigated. The results show that the whole reaction process undergoes four main stages: the diffusion of Al atom, the generation of (Al, Fe, P) intermediate compound, the precipitation of nano AlP and Al{sub 13}Fe{sub 4} clusters and their growth to submicron particles. The microstructure of Fe-P particles evolves from the “egg-type”, the “sponge-type” to the “sesame-cake” structure. AlP and Al{sub 13}Fe{sub 4} nano phases have in-situ generated and evolved during the whole process. The gradual reaction mechanism has been discussed. Furthermore, a novel Al-Fe-P alloy which contains (Al, Fe, P) intermediate compounds and nano AlP particles has been synthesized and its low-temperature refining performance on A390 alloy has also been investigated.

  16. Solutional Landforms of Gabal Al-Qaraha, the Oasis of Al-Hasa, Saudi Arabia

    OpenAIRE

    Embabi, Nabil S.

    1981-01-01

    Jabal Al-Qarah is one of the small outlier hills at the Oasis of Al-Hasa, lying at about lOkm ENE of Al-Hafuf Town. The solutional forms of Al-Qarah hill discussed in this paper are as follows : 1. A calcareous duricrust which covers the top and some of the slopes of the hill. 2. Rock Pillars which are long columns of white lime-stone. 3. Huge crevasses which are wide erosional openings along vertical joints. 4. Narrow, sinuous caves inside the hill. 5. Pedestal rocks with mushroo...

  17. Tetragonal phase in Al-rich region of U-Fe-Al system

    International Nuclear Information System (INIS)

    Meshi, L.; Zenou, V.; Ezersky, V.; Munitz, A.; Talianker, M.

    2005-01-01

    A new ternary aluminide U 2 FeAl 20 with the approximate composition Al-4.2at% Fe-8.5at% U was observed in the Al-rich corner of the U-Al-Fe system. Transmission electron microscopy and electron microdiffraction technique were used for characterization of the structure of this phase. It has a tetragonal unit cell with the parameters a=12.4A and c=10.3A and can be described by the space group I4-bar 2m

  18. Study on Mg/Al Weld Seam Based on Zn–Mg–Al Ternary Alloy

    Directory of Open Access Journals (Sweden)

    Liming Liu

    2014-02-01

    Full Text Available Based on the idea of alloying welding seams, a series of Zn–xAl filler metals was calculated and designed for joining Mg/Al dissimilar metals by gas tungsten arc (GTA welding. An infrared thermography system was used to measure the temperature of the welding pool during the welding process to investigate the solidification process. It was found that the mechanical properties of the welded joints were improved with the increasing of the Al content in the Zn–xAl filler metals, and when Zn–30Al was used as the filler metal, the ultimate tensile strength could reach a maximum of 120 MPa. The reason for the average tensile strength of the joint increasing was that the weak zone of the joint using Zn–30Al filler metal was generated primarily by α-Al instead of MgZn2. When Zn–40Al was used as the filler metal, a new transition zone, about 20 μm-wide, appeared in the edge of the fusion zone near the Mg base metal. Due to the transition zones consisting of MgZn2- and Al-based solid solution, the mechanical property of the joints was deteriorated.

  19. The effectiveness of ERC advanced life support (ALS) provider courses for the retention of ALS knowledge.

    Science.gov (United States)

    Fischer, Henrik; Strunk, Guido; Neuhold, Stephanie; Kiblböck, Daniel; Trimmel, Helmut; Baubin, Michael; Domanovits, Hans; Maurer, Claudia; Greif, Robert

    2012-02-01

    Out-of-hospital emergency physicians in Austria need mandatory emergency physician training, followed by biennial refresher courses. Currently, both standardized ERC advanced life support (ALS) provider courses and conventional refresher courses are offered. This study aimed to compare the retention of ALS-knowledge of out-of-hospital emergency physicians depending on whether they had or had not participated in an ERC-ALS provider course since 2005. Participants (n=807) from 19 refresher courses for out-of-hospital emergency physicians answered eight multiple-choice questions (MCQ) about ALS based on the 2005 ERC guidelines. The pass score was 75% correct answers. A multivariate logistic regression analyzed differences in passing scores between those who had previously participated in an ERC-ALS provider course and those who had not. Age, gender, regularity of working as an out-of-hospital emergency physician and the self-reported number of real resuscitation efforts within the last 6months were entered as control variables. Out-of-hospital emergency physicians who had previously attended an ERC-ALS provider course had a significantly higher chance of passing the MCQ test (OR=1.60, p=0.015). Younger age (OR=0.95, pERC-ALS provider course since 2005 had a higher retention of ALS knowledge compared to non-ERC-ALS course participants. Copyright © 2011 Elsevier Ireland Ltd. All rights reserved.

  20. Chemical failure modes of AlQ3-based OLEDs: AlQ3 hydrolysis.

    Science.gov (United States)

    Knox, John E; Halls, Mathew D; Hratchian, Hrant P; Schlegel, H Bernhard

    2006-03-28

    Tris(8-hydroxyquinoline)aluminum(III), AlQ3, is used in organic light-emitting diodes (OLEDs) as an electron-transport material and emitting layer. The reaction of AlQ3 with trace H2O has been implicated as a major failure pathway for AlQ3-based OLEDs. Hybrid density functional calculations have been carried out to characterize the hydrolysis of AlQ3. The thermochemical and atomistic details for this important reaction are reported for both the neutral and oxidized AlQ3/AlQ3+ systems. In support of experimental conclusions, the neutral hydrolysis reaction pathway is found to be a thermally activated process, having a classical barrier height of 24.2 kcal mol(-1). First-principles infrared and electronic absorption spectra are compared to further characterize AlQ3 and the hydrolysis pathway product, AlQ2OH. The activation energy for the cationic AlQ3 hydrolysis pathway is found to be 8.5 kcal mol(-1) lower than for the neutral reaction, which is significant since it suggests a role for charge imbalance in promoting chemical failure modes in OLED devices.

  1. Al-matrix composite materials reinforced by Al-Cu-Fe particles

    International Nuclear Information System (INIS)

    Bonneville, J; Laplanche, G; Joulain, A; Gauthier-Brunet, V; Dubois, S

    2010-01-01

    Al-matrix material composites were produced using hot isostatic pressing technique, starting with pure Al and icosahedral (i) Al-Cu-Fe powders. Depending on the processing temperature, the final reinforcement particles are either still of the initial i-phase or transformed into the tetragonal ω-Al0 0.70 Cu 0.20 Fe 0.10 crystalline phase. Compression tests performed in the temperature range 293K - 823K on the two types of composite, i.e. Al/i and Al/ω, indicate that the flow stress of both composites is strongly temperature dependent and exhibit distinct regimes with increasing temperature. Differences exist between the two composites, in particular in yield stress values. In the low temperature regime (T ≤ 570K), the yield stress of the Al/ω composite is nearly 75% higher than that of the Al/i composite, while for T > 570K both composites exhibit similar yield stress values. The results are interpreted in terms of load transfer contribution between the matrix and the reinforcement particles and elementary dislocation mechanisms in the Al matrix.

  2. Rupture of Al matrix in U-Mo/Al dispersion fuel by fission induced creep

    Energy Technology Data Exchange (ETDEWEB)

    Jeong, Gwan Yoon; Sohn, Dong Seong [UNIST, Daejeon (Korea, Republic of); Kim, Yeon Soo [Argonne National Laboratory, Argonnge (United States); Lee, Kyu Hong [KAERI, Daejeon (Korea, Republic of)

    2016-05-15

    This phenomenon was found specifically in the dispersion fuel plate with Si addition in the Al matrix to suppress interaction layer (IL) formation between UMo and Al. It is known that the stresses induced by fission induced swelling in U-Mo fuel particles are relieved by creep deformation of the IL, surrounding the fuel particles, that has a much higher creep rate than the Al matrix. Thus, when IL growth is suppressed, the stress is instead exerted on the Al matrix. The observed rupture in the Al matrix is believed to be caused when the stress exceeded the rupture strength of the Al matrix. In this study, the possibility of creep rupture of the Al matrix between the neighboring U-Mo fuel particles was examined using the ABAQUS finite element analysis (FEA) tool. The predicted rupture time for a plate was much shorter than its irradiation life indicating a rupture during the irradiation. The higher stress leads Al matrix to early creep rupture in this plate for which the Al matrix with lower creep strain rate does not effectively relieve the stress caused by the swelling of the U-Mo fuel particles. For the other plate, no rupture was predicted for the given irradiation condition. The effect of creeping of the continuous phase on the state of stress is significant.

  3. Al Qaeda in the Arabian Peninsula (AQAP): An Al Qaeda Affiliate Case Study

    Science.gov (United States)

    2017-10-01

    Villarosa, Al-Qaeda in Yemen, Carnegie Endowment, July 7, 2009, http://carnegieendowment.org/2009/07/07/Al-Qaeda-in-yemen- event-1372. 53 Brian Whitaker...73 Khaled Fattah, “Yemen’s Insecurity Dilemma,” Yemen Times, February 11, 2014, http:// carnegie -mec.org/2014/02...Johnsen, and Shari Villarosa, “Al-Qaeda in Yemen.” Carnegie Endowment. July 7, 2009. http://carnegieendowment.org/2009/07/07/Al-Qaeda-in- yemen-event

  4. KITAB AL-SANĪ AL-MAṬĀLIB: INTERKONEKSI NAHWU DAN TASAWUF

    Directory of Open Access Journals (Sweden)

    Zakiyah Zakiyah

    2012-12-01

    Tulisan ini mereview buku yang berjudul al-Sanī al-Maṭālib yang ditulis oleh Kiai Nur Iman Mlangi Yogyakarta. Buku ini ditulis dalam bahasa Arab yang me­ngandung interkoneksi antara ilmu Nahwu (tata bahasa Arab dengan mis­tisis­me. Buku ini sangat menarik karena kenyataan bahwa kedua pengetahuan tersebut memiliki aturan sendiri-sendiri. Selain itu, sangat sedikit penulis yang menulis dengan gaya seperti itu. Salah satunya adalah Syaikh Abdul Qadir bin Ahmad al-Kuhany dengan karyanya yang berjudul Manniyat al-Fāqir al-Munjarid wa Sayrat al-Murīd al-Mutafarrid. Buku al-Saniy al-Muthalib diduga telah ditulis pada akhir abad ke-18 atau awal abad ke-19, menurut periode kehidupan Kiai Nur Iman yaitu sekitar pertengahan abad ke-18. Aturan Nahwu dalam buku ini dijelaskan secara teosofi yang dimulai dengan penjelasan mengenai tauhid (keesaan Tuhan sebagai kajian dasar bagi orang Islam, yang diikuti dengan makna dari masing-masing aturan bahasa Arab dalam aspek mistiknya.

  5. Growth of CdTe: Al films; Crecimiento de peliculas de CdTe: Al

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez A, M.; Zapata T, M. [CICATA-IPN, 89600 Altamira, Tamaulipas (Mexico); Melendez L, M. [CINVESTAV-IPN, A.P. 14-740, 07000 Mexico D.F. (Mexico); Pena, J.L. [CINVESTAV-IPN, A.P. 73 Cordemex, 97310 Merida, Yucatan (Mexico)

    2006-07-01

    CdTe: AI films were grown by the close space vapor transport technique combined with free evaporation (CSVT-FE). The Aluminum (Al) evaporation was made by two kinds of sources: one made of graphite and the other of tantalum. The films were deposited on glass substrates. The Al source temperature was varied maintaining the CdTe source temperature fixed as well as the substrate temperature. The films were characterized by x-ray energy dispersive analysis (EDAX), x-ray diffraction and optical transmission. The results showed for the films grown with the graphite source for Al evaporation, the Al did not incorporate in the CdTe matrix, at least to the level of EDAX sensitivity; they maintained the same crystal structure and band gap. For the samples grown with the tantalum source, we were able to incorporate the Al. The x-ray diffraction patterns show that the films have a crystal structure that depends on Al concentration. They were cubic up to 2.16 at. % Al concentration; for 19.65 at. % we found a mixed phase; for Al concentration higher than 21 at. % the films were amorphous. For samples with cubic structure it was found that the lattice parameter decreases and the band gap increases with Al concentration. (Author)

  6. Phenotypic and genotypic studies of ALS cases in ALS-SMA families.

    Science.gov (United States)

    Corcia, Philippe; Vourc'h, Patrick; Blasco, Helene; Couratier, Philippe; Dangoumau, Audrey; Bellance, Remi; Desnuelle, Claude; Viader, Fausto; Pautot, Vivien; Millecamps, Stephanie; Bakkouche, Salah; Salachas, FranÇois; Andres, Christian R; Meininger, Vincent; Camu, William

    2018-03-01

    Amyotrophic lateral sclerosis (ALS) and spinal muscular atrophy (SMA) are the most frequent motor neuron disorders in adulthood and infancy, respectively. There is a growing literature supporting common pathophysiological patterns between those disorders. One important clinical issue for that is the co-occurrence of both diseases within a family. To collect families in which ALS and SMA patients co-exist and describe the phenotype and the genotype of ALS patients. Nine families with co-occurrence of SMA and ALS have been gathered over the last 15 years. Epidemiological, phenotype and genetic status were collected. Out of the nine families, six corresponded to the criteria of familial ALS (FALS). Clinical data were available for 11 patients out of the 15 ALS cases. Mean age of onset was 58.5 years, site of onset was lower limbs in nine cases (81.8%), median duration was 22 months. Four ALS patients carried a mutation: three mutations in SOD1 gene (G147N in two cases and one with E121G) and one repeat expansion in the C9ORF72 gene. Three patients had abnormal SMN1 copy numbers. While the high proportion of familial history of ALS cases in these ALS-SMA pedigrees could have suggested that these familial clusters of the two most frequent MND rely on a genetic background, we failed to exclude that this occurred by chance.

  7. Characterization of N-polar AlN in GaN/AlN/(Al,Ga)N heterostructures grown by metal-organic chemical vapor deposition

    Science.gov (United States)

    Li, Haoran; Mazumder, Baishakhi; Bonef, Bastien; Keller, Stacia; Wienecke, Steven; Speck, James S.; Denbaars, Steven P.; Mishra, Umesh K.

    2017-11-01

    In GaN/(Al,Ga)N high-electron-mobility transistors (HEMT), AlN interlayer between GaN channel and AlGaN barrier suppresses alloy scattering and significantly improves the electron mobility of the two-dimensional electron gas. While high concentrations of gallium were previously observed in Al-polar AlN interlayers grown by metal-organic chemical vapor deposition, the N-polar AlN (Al x Ga1-x N) films examined by atom probe tomography in this study exhibited aluminum compositions (x) equal to or higher than 95% over a wide range of growth conditions. The also investigated AlN interlayer in a N-polar GaN/AlN/AlGaN/ S.I. GaN HEMT structure possessed a similarly high x content.

  8. 26Al in the interstellar medium

    International Nuclear Information System (INIS)

    Clayton, D.D.; Leising, M.D.

    1987-01-01

    Several different lines of physical reasoning have converged on the importance of the radioactive nucleus 26 Al. The sciences of meteoritics, nucleosynthesis, gamma-ray astronomy, galactic chemical evolution, solar system formation, and interstellar chemistry all place this nucleus in a central position with possible profound implications. Perhaps more importantly the study of this radioactivity can unite these diverse fields in a complicated framework which will benefit all of them. This review traces the evolution of ideas concerning 26 Al in the context of these disciplines. 26 Al was first discussed for the possibility that its decay energy could melt meteorite parent bodies, and its daughter, 26 Mg, was later found in meteorites with enhanced abundance. It was also among the first radioactivities expected to be synthesized in interestingly large quantities in nulceosynthetic events. The first definitive detection of gamma-rays from an interstellar radioactivity is that of 1.809 MeV gamma-rays from 26 Al. This discovery has many implications, some of which are outlined here. The whole problem of isotopic anomalies in meteorites is greatly influenced by the specific issues surrounding excess 26 Mg, whether it represents in situ decay of 26 Al or memory of conditions of the ISM. The relationships among these ideas and their implications are examined. (orig.)

  9. Kerja Perspektif Al-Qur'an

    Directory of Open Access Journals (Sweden)

    Ahmad Munir

    2011-05-01

    Full Text Available The moslem ethics of life is based on movement as ex­pressed in certain terms like al-sharī’ah, al-tarīqah, al-sirāt, al-sabīl and al-manhaj, that make sense of way and teachings to achieve good life. Islam obliges and gives appreciation of the achievements of Mus­lims. The Qur’an uses several terms to refer to such work; ‘charity, kasb, juhd, ibtighâ’, sa ’yu and su ’âl. From this concept, the Qur’an considers work as nob­le, while begging is despicable. Work means thankful to God for the potential He bestows. The Qur’an promotes work not only because it is the way to achieve the wealth, but also because it possesses the its sacred value for the benefit of fulfilling livelihood. Therefore the work should also be done based on ethical values .

  10. Neuropsychoanalyse: Hirntätigkeit als Zeichenprozess

    Directory of Open Access Journals (Sweden)

    Milan Scheidegger

    2014-12-01

    Full Text Available Fassen wir Geist und Natur nicht als Dichotomie sondern im Sinne von Peirce als Kontinuität auf, dann lässt die genauere Betrachtung des Körpers semiotische Leibphänomene als Zeichen einer Sprache erkennen, deren Grammatik es – im Sinne einer «Bioarchäologie» – zu entschlüsseln gilt. Hierfür stellen die Neurowissenschaften mit modernen Visualisierungstechniken geeignete epistemische Hilfsmittel bereit: Sie machen körperliche Vorgänge des Informationsaustausches sichtbar und heben die semiotisch wenig erschlossene Ebene komplexer neuronaler Zeichentransformationen ans Licht. Um eine Integration der physiologischen und psychologischen Perspektive bemüht sich das transdisziplinäre Projekt der «Neuropsychoanalyse». Sie hebt die Relevanz natürlicher Verarbeitungsmechanismen des Körpers für die subjektiv geprägten Zeichentransformationen des mentalen Erlebens hervor und weicht eine semiotisch allzu undurchlässige Grenzziehung zwischen Psycho- und Neurodynamik etwas auf. Die Hirntätigkeit als potenziell erkenntnisleitenden Zeichenprozess zu verstehen, darf aber nicht in einer unreflektierten Bezugnahme auf neuronale Zeichensysteme münden, wenn die Neuropsychoanalyse mehr als nur eine medienwirksame Neurokarikatur psychodynamischer Konzepte erreichen will.

  11. Threshold states in /sup 26/Al revisited

    Energy Technology Data Exchange (ETDEWEB)

    Champagne, A E; McDonald, A B; Wang, T F; Howard, A J; Magnus, P V; Parker, P D

    1986-03-31

    Threshold states in /sup 26/Al have been re-examined using the /sup 27/Al(/sup 3/He,..cap alpha..)/sup 26/Al and /sup 25/Mg(/sup 3/He,d..gamma..)/sup 26/Al reactions in order to resolve apparent ambiguities in some of the previously reported properties of these states. In particular, the s-wave resonance strength reported at E=37 keV is now found to be located at E/sub c.m./=57.54 keV, and the proton width for the 374 keV resonance has been revised to GAMMA/sub p/=0.82 eV. These results have been used to calculate a new resonance strength of ..omega gamma..= 1.6 x 10/sup -13/ eV for the 57.54 keV resonance. As a result, the stellar production rate for /sup 26/Al is increased by a factor approx.=3-38 for temperatures T/sub 9/=0.05-0.1.

  12. Deletion of ALS5, ALS6 or ALS7 increases adhesion of Candida albicans to human vascular endothelial and buccal epithelial cells

    OpenAIRE

    ZHAO, XIAOMIN; OH, SOON-HWAN; HOYER, LOIS L.

    2007-01-01

    C. albicans yeast forms deleted for ALS5, ALS6 or ALS7 are more adherent than a relevant control strain to human vascular endothelial cell monolayers and buccal epithelial cells. In the buccal and vaginal reconstituted human epithelium (RHE) disease models, however, mutant and control strains caused a similar degree of tissue destruction. Deletion of ALS5 or ALS6 significantly slowed growth of the mutant strain; this phenotype was not affected by addition of excess uridine to the culture medi...

  13. MOSQUE ARCHITECTURE AS A SUSTAINABLE BUILDING IN URBAN (Case Study: Al Markas Al Islamic Mosque Makassar

    Directory of Open Access Journals (Sweden)

    Imriyanti Imriyanti

    2014-02-01

    Full Text Available Abstract Mosque Architecture is a part of Islamic architecture. Mosque should be fused with elements of nature because its function as a place to pray to God who created the universe. Al Markas Al Islamic Makassar mosque is used as a center of Islamic aspirations of the people and the government to accommodate all the activities of moslems in Makassar. Through this function, the provision of Al Markas Al Islamic mosque began from the desire of Islamic societies in Makassar, which wants the Islamic center to be equipped with facilities and infrastructure as well as architectural, monumental buildings and structures that can be last for hundreds of years (continuous, blend with the environment, and also can be used by the public. Having regard to the function of a mosque especially at the Al Markas Al Islamic Makassar mosque, then the problem that arise is how the Al Markas Al Islamic mosque can be survived/sustainable  in order  to function  as a place  of worship  and  as a center  of Islam.  This research  is a descriptive qualitative research that is trying to generate data in the form of systematic and accurate picture of the object of study. The sustaiprophetlity  of Al Markas AL Islamic mosque can be known through the concept of Islam  in accordance with the view of Islam as well as the sustaiprophetlity of the buildings that seen in the spatial pattern of the mosque, appearance, natural lighting, natural ventilation, and user behavior of the mosque. Keywords: mosque architecture, sustaiprophetlity, view of Islam     Abstrak Arsitektur masjid merupakan bagian dari arsitektur Islam. Bangunan masjid sebaiknya dapat menyatu dengan unsur alam karena masjid difungsikan sebagai wadah dalam bersujud/sembahyang  kepada Allah SWT yang menciptakan alam semesta ini. Masjid Al Markas Al Islamic Makassar merupakan kompleks kegiatan Islam yang digunakan sebagai pusat aspirasi masyarakat  dan pemerintahan  yang dapat menampung

  14. Perfil de consulta en niños alérgicos provenientes de familias de bajos ingresos Profile of consultation of allergic children from low income families

    Directory of Open Access Journals (Sweden)

    Alain Raimundo Rodríguez-Orozco

    2007-09-01

    Full Text Available Las enfermedades alérgicas son una de las principales causas de atención médica en la infancia y su impacto se acentúa más en las familias de bajos ingresos. En un estudio descriptivo analítico se caracterizó el perfil de consulta del niño alérgico proveniente de familias mexicanas de bajos recursos económicos. Las enfermedades alérgicas predominaron en el sexo masculino y la edad escolar; el 71 % de los enfermos provenía de localidades urbanas. El asma fue el diagnóstico más frecuente (64 %, seguido de la rinitis alérgica (30 %, dermatitis atópica (6 % y urticaria (3 %. Las reactividades encontradas con más frecuencia en la prueba cutánea fueron Dermatofagoides farinae (77 %, Dermatofagoides pteronyssinus (60 %, Phleum pratense (20 %, gato (17 %, perro (14 % y Cynodon dactylon (11 %. El alto grado de disfunción familiar y la poca adhesión a tratamientos prolongados posibilitan la perpetuidad de los síntomas y el pronóstico incierto en este grupo de niños.Allergic diseases are one of the main causes for seeing the doctor in childhood and their impact is more acute in low income families. An analytical descriptive study characterized the profile of medical consultation of the allergic child from Mexican low income families. Allergic diseases prevailed in males and at school age, and 71 % of the sick children lived in urban settings. Asthma was the most frequent diagnosis (64 % followed by allergic rhinitis (30%, atopic dermatitis (6 % and urticaria (3 %. The most commom reactivity rates in the cutaneous test were Dermatofagoides farinae (77 %, Dermatofagoides pteronyssinus (60 %, Phleum pratense (20 %, cat (17 %, dog (14 % and Cynodon dactylon (11 %. The high level of family dysfunction and low adhesion to long therapies make it possible the persistence of symptoms and the uncertain prognosis in this group of children.

  15. Características clínicas y sociolaborales de pacientes psiquiátricos al término de la incapacidad temporal por contingencia común

    Directory of Open Access Journals (Sweden)

    J.I. Pastrana-Jiménez

    2013-06-01

    Full Text Available Introducción: La patología psiquiátrica es la principal causa de pérdida de calidad de vida y presenta unos altísimos costes, personales y económicos. Pese a ello, existen pocos datos sobre las características de los pacientes psiquiátricos con incapacidad laboral y sus características clínicas. Por ello nos proponemos describir estas características en los pacientes con más de 12 meses de incapacidad temporal e investigar factores que puedan estar ligados a cronicidad o disfunción. Material y métodos: Sobre el total de pacientes derivados por el INSS para evaluación psiquiátrica, se excluyeron aquellos que no se encontraran en Incapacidad Temporal o que llevaran menos de 12 meses, conformando una muestra de 97 pacientes. Se registraron las principales características sociolaborales y clínicas, diagnóstico según criterios DSM-IV-TR, se aplicaron escalas de funcionalidad e intensidad sintomatológica como EEAG, MADRS y WHODAS O. Resultados: La distribución por sexos fue homogénea, con una edad media de 47 años, vive en pareja el 51,5%, normalmente refieren una vivencia de apoyo social moderado y 1/3 no ha superado estudios primarios. El 78,4% presenta antecedentes físicos importantes, fuma 50,5%, 59% tiene antecedentes familiares psiquiátricos, que tienden a asociarse a baja funcionalidad y tratamientos más prolongados. La concordancia diagnóstica es del 71,1%, los trastornos afectivos son el grupo diagnóstico más frecuente. El trastorno adaptativo es el diagnóstico más frecuente en el grupo al que no se le encuentra limitación funcional y se asocia a menos tiempo en tratamiento y a menos intensidad sintomatológica. Las escalas utilizadas correlacionan entre sí, distinguiendo EEAG y WHODAS O a los trastornos adaptativos y a los cuadros no incapacitados, mientras que MADRS señala a los trastornos afectivos. Tras la evaluación, al 46,39% no se le propone incapacidad, al 11,34% se le solicita prórroga, al 29

  16. Ultrasonic spot welding of Al/Mg/Al tri-layered clad sheets

    International Nuclear Information System (INIS)

    Macwan, A.; Patel, V.K.; Jiang, X.Q.; Li, C.; Bhole, S.D.; Chen, D.L.

    2014-01-01

    Highlights: • The optimal welding condition is achieved at 100 J and 0.1 s. • Failure load first increases and then decreases with increasing welding energy. • The highest failure load after welding is close to that of the clad sheets. • At low energy levels failure occurs in the mode of interfacial failure. • At high energy levels failure takes place at the edge of nugget region. - Abstract: Solid-state ultrasonic spot welding (USW) was used to join Al/Mg/Al tri-layered clad sheets, aiming at exploring weldability and identifying failure mode in relation to the welding energy. It was observed that the application of a low welding energy of 100 J was able to achieve the optimal welding condition during USW at a very short welding time of 0.1 s for the tri-layered clad sheets. The optimal lap shear failure load obtained was equivalent to that of the as-received Al/Mg/Al tri-layered clad sheets. With increasing welding energy, the lap shear failure load initially increased and then decreased after reaching a maximum value. At a welding energy of 25 J, failure occurred in the mode of interfacial failure along the center Al/Al weld interface due to insufficient bonding. At a welding energy of 50 J, 75 J and 100 J, failure was also characterized by the interfacial failure mode, but it occurred along the Al/Mg clad interface rather than the center Al/Al weld interface, suggesting stronger bonding of the Al/Al weld interface than that of the Al/Mg clad interface. The overall weld strength of the Al/Mg/Al tri-layered clad sheets was thus governed by the Al/Mg clad interface strength. At a welding energy of 125 J and 150 J, thinning of weld nugget and extensive deformation at the edge of welding tip caused failure at the edge of nugget region, leading to a lower lap shear failure load

  17. Core electron binding energy shifts of AlBr3 and Al2Br6 vapor

    International Nuclear Information System (INIS)

    Mueller, Astrid M.; Plenge, Juergen; Leone, Stephen R.; Canton, Sophie E.; Rude, Bruce S.; Bozek, John D.

    2006-01-01

    The Al 2p and Br 3d inner-shell photoelectron spectra of aluminum tribromide monomer and dimer vapor were measured at 90 and 95 eV photon energy, respectively, to determine the core electron binding energies of the atoms in the two molecular species. While AlBr 3 has three identical Br atoms, Al 2 Br 6 exhibits four terminal and two bridging Br atoms. The species are identified by their distinct valence photoelectron spectra. Comparison of the observed Al 2p 1/2 and Al 2p 3/2 electron binding energies of AlBr 3 with those of Al 2 Br 6 shows that there is a chemical shift of (0.15 ± 0.03) eV to lower energy in the dimer. In Al 2 Br 6 , an assignment is proposed in which the Br 3d 3/2 and Br 3d 5/2 binding energies of terminal Br atoms are (1.18 ± 0.03) eV lower than those of bridging Br atoms. This assignment assumes that both types of Br atoms have similar cross-sections for ionization. With this result, the Br 3d 3/2 and Br 3d 5/2 binding energies of Br atoms in AlBr 3 are (0.81 ± 0.03) eV lower than those of bridging Br atoms of the dimer but (0.37 ± 0.03) eV higher than those of terminal Br atoms of the dimer. The obtained chemical shifts are considered in terms of the binding relations and electron density distributions in both molecules. Chemical shifts that are larger than a few hundred millielectron volts, as observed in the Al 2 Br 6 /AlBr 3 system, offer potential to study the dissociation dynamics of the dimer in a femtosecond visible or ultraviolet-pump/XUV-probe experiment

  18. Solute trapping of Ge in Al

    International Nuclear Information System (INIS)

    Smith, P.M.; West, J.A.; Aziz, M.J.

    1992-01-01

    This paper reports on partitioning during rapid solidification of dilute Al-Ge alloys. Implanted thin films of Al have been pulsed-laser melted to obtain solidification at velocities in the range of 0.01 ms to 3.3 m/s, as measured by the transient conductance technique. Previous and subsequent Rutherford Backscattering depth profiling of the Ge solute in the Al alloys has been used to determine the nonequilibrium partition coefficient k. A significant degree of lateral film growth during solidification confines determination of k to the placing of an upper bound of 0.22 on k for solidification velocities in this range. The authors place a lower limit of 10 m/s on the diffusive velocity, which locates the transition from solute partitioning to solute trapping in the Continuous Growth Model

  19. Al- Khwarizmi and axiomatic foundation of algebra

    International Nuclear Information System (INIS)

    Fares, N.

    2015-01-01

    This paper intends to investigate the axiomatic foundations of algebra, as they were presented in the book of algebra of al-Khwarizmi (9 th century), and as they were developed in many subsequent Arabic works. The paper gives also a description of algebra evolution towards a discipline independent ofgeometry and arithmetic: the two disciplines whosemarriage had led to its birth.By an in depth reading of some details in the text of al Khwarizmi , we concluded that this mathematician intended to lay down the axiomatic foundations of that new discipline. His resort to arithmetical and geometrical means was a way of making his theory more accessible. He used them to justify the axioms: those that were not explicitly introduced per se, and those that were remained implicit. The paper also relies on some unedited writingsof al-Khwarizmi's successors, which could shedlight on the ways they used to consolidate the foundations of algebra and improve its methods. (author)

  20. Superbends expand the scope of Berkeley's ALS

    International Nuclear Information System (INIS)

    Robin, David S.; Robinson, Arthur L.; Tamura, Lori S.

    2002-01-01

    While the ALS has turned out to be a world-leader in providing beams of soft X-rays -- indeed, furnishing these beams remains its core mission -- there has nonetheless been a steadily growing demand from synchrotron radiation users for harder X-rays with higher photon energies. The clamor has been strongest from protein crystallographers whose seemingly insatiable appetite for solving structures of biological macromolecules could not be satisfied by the number of crystallography beamlines available worldwide. But how to provide these X-rays in a cost-effective way without disrupting the thriving research programs of the existing ALS users was the problem. Superconducting bend magnets (superbends) provided the answer for the ALS, which adopted a proposal to replace some of the normal combined-function (gradient) magnets in the curved arcs of the storage ring with superconducting dipoles that could generate higher magnetic fields and thus synchrotron light with a higher critical energy

  1. Evaluation of Functional Disability in ALS

    Directory of Open Access Journals (Sweden)

    Akbar Soltan-Zadeh

    2002-06-01

    Full Text Available Objective: Amyotrophic Lateral Sclerosis (ALS is a progressive degenerative fatal disorder of motor neuron. In this research course of functional disability and possible underlying factors affecting disability were studied. Materials & Methods: First 59 patients with definite ALS were selected and for each patient ALSFRS (ALS Functional Rating Scale was determined at Initial and the end of a six month period. Results: During this period 9 patients expired. Bulbar onset localization showed a more rapid course than non-bulbar onset group. Conclusion: There was no significant relationship between the age group or gender with progression of disability. In expired group, mean survival in bulbar onset and older patients were significantly less than those with non-bulbar onset and younger ones. There was no significant relationship between survival and gender.

  2. Grain refinement of Al wrought alloys with newly developed AlTiC master alloys; Kornfeinung von Al-Knetlegierungen mit neu entwickelten AlTiC-Vorlegierungen

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, W. [Vereinigte Aluminium-Werke AG, Bonn (Germany). Forschung und Entwicklung

    2000-10-01

    AlTiC master alloys are a new grain refiner type to produce an equiaxed grain structure of cast extrusion and rolling ingots. These master alloys contain Ti carbides which act as nucleants of the {alpha} solid solution during solidification. The TiC content is lower than the TiB{sub 2} content of the industrial proved AlTiB master alloys. Benefits of the AlTiC master alloys are the low agglomeration tendency of the Ti carbides in the melt and that no Zr poisoning takes place. Despite of the low Ti carbide content the grain refinement performance can be very efficient, if low melt temperatures during casting will be used and as result of this a sufficient constitutional supercooling at the solidification front is achieved. (orig.)

  3. Autologous Stem Cell Transplant for AL Amyloidosis

    Directory of Open Access Journals (Sweden)

    Vivek Roy

    2012-01-01

    Full Text Available AL amyloidosis is caused by clonal plasma cells that produce immunoglobulin light chains which misfold and get deposited as amyloid fibrils. Therapy directed against the plasma cell clone leads to clinical benefit. Melphalan and corticosteroids have been the mainstay of treatment for a number of years and the recent availability of other effective agents (IMiDs and proteasome inhibitors has increased treatment options. Autologous stem cell transplant (ASCT has been used in the treatment of AL amyloidosis for many years. It is associated with high rates of hematologic response and improvement in organ function. However, transplant carries considerable risks. Careful patient selection is important to minimize transplant related morbidity and mortality and ensure optimal patient outcomes. As newer more affective therapies become available the role and timing of ASCT in the overall treatment strategy of AL amyloidosis will need to be continually reassessed.

  4. Respuesta al tratamiento de la Enfermedad de Graves-Basedow en pacientes pediátricos

    Directory of Open Access Journals (Sweden)

    Martha Calagua Quispe

    2014-04-01

    Full Text Available Objetivos: Describir la respuesta clínica y bioquímica al tratamiento del hipertiroidismo por enfermedad de Graves en pacientes pediátricos. Diseño: Estudio retrospectivo. Institución: Instituto Nacional de Salud del Niño, Lima, Perú. Participantes: Niños con enfermedad de Graves. Métodos: Se incluyó 32 pacientes con diagnóstico de hipertiroidismo por Enfermedad de Graves, entre 1996 a 2007. Se consideró remisión, cuando se encontraban asintomáticos y bioquímicamente eutiroideos, luego de 6 meses de suspendido el tratamiento; y recaída, si luego de este periodo de tiempo, se encontró valores hormonales alterados. Principales medidas de resultados: Remisión o recaída luego del tratamiento. Resultados: Al diagnóstico, la edad promedio fue 10,5 años (3,2 a 17,9 años; 26 pacientes (81,2% fueron de sexo femenino, 13 (40,6% púberes y 19 (59,3% pre-púberes. Los síntomas y signos más frecuentes fueron bocio, sudoración, nerviosismo, pérdida de peso, taquicardia y exoftalmos. Se usó metimazol como primera opción terapéutica a una dosis inicial promedio de 0,78 mg/kg/ día (0,4 a 2 mg/kg/día. La TSH (57,1% y el T4L (50% alcanzaron valores normales entre los 6 y 8 meses. Se observó remisión en 11 pacientes (34,3%, 3 (9,3% sufrieron recaída, 12 (37,5% pasaron a tratamiento con radioyodo (I131 y 6 (18,7% continuaron recibiendo metimazol. La remisión de la enfermedad se alcanzó a los 2,81± 0,91 años de tratamiento (rango de 1.5 a 4,8; 4,1% remitió luego del primer año, y 35,3%, 37,5% y 25% luego del segundo, tercer y cuarto año de tratamiento, respectivamente. La edad promedio de los que recibieron I131 fue 14,6 años (7,1 a 19,6 años, a una dosis alrededor de 7mCi. El 75% de ellos remitió a los 0,64± 0,60 años (rango de 0,16 a 1,5 años. Conclusiones: El hipertiroidismo por enfermedad de Graves es de relativa frecuencia en pediatría. Se obtuvo remisión en 34,3% de pacientes tratados con metimazol en un tiempo

  5. [Al-Biruni--a universal scientist].

    Science.gov (United States)

    Kujundzić, E; Masić, I

    1999-01-01

    Al-Biruni's was of Persian descent. He was born in Horesmiya and had studied mathematics, history and medicine. Acquiring knowledge from these sciences, he wrote an outstanding work on chronology of several nations and devoted it to Ziyarit ruler Kabus. He made a chronological overview of calendars from many nations, including Persians, Greeks, Egyptians, Jews, Melkitian and Nestorian Christians, Sabeyaans as well as the old Arabs. Data presented in the work, according to the later authors, were taken from very reliable sources. He was contemporary of Ibn-Sina, and thanks to their friendship, they have discussed very much miscellaneous topics. He belonged to the group of scholars, taken by Gaznevian Soultan Mahmud to a long journey to India. Afterwards Al-Biruni wrote and published detailed work "Description of India"--a work on cultural history of India. Due to excellent abilities of Al-Biruni as a philosopher and scholar, there are still significant and reliable notes about buddhistic philosophy, structure of castes and Brahmans' life style. In this Al-Biruni's masterpiece, there are many comparative analysis of Suffism and certain Indian philosophical methods. Al-Biruni's most important work is "Pharmacopoeia"--"Kitab al-saydala", which brilliantly describes all medicaments. This work has been published in many languages. He also wrote few works on astronomy and astrology. In those works he has explained some astrological events through scientific approach in a such peculiar way that nobody has ever explained before. He was also interested in sciences like geology, mineralology, geography, mathematics, psychology and many others.

  6. Instability of TiC and TiAl3 compounds in Al-10Mg and Al-5Cu alloys by addition of Al-Ti-C master alloy

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The performance of Al-Ti-C master alloy in refining Al-10Mg and A1-5Cu alloys was studied by using electron probe micro-analyzer (EPMA) and X-ray diffractometer (XRD) analysis.The results indicate that there are obvious fading phenomena in both Al-10Mg and Al-5Cu alloys with the addition of Al-5Ti-0.4C refiner which contains TiC and TiAl3 compounds.Mg element has no influence on the stability of TiC and TiAl3, while TiC particles in Al-10Mg alloy react with Al to form Al4C3 particles, resulting in the refinement fading.However, TiC particles are relatively stable in Al-5Cu alloy, while TiAl3 phase reacts with Al2Cu to produce a new phase Ti(Al, Cu)2, which is responsible for the refinement fading in Al-5Cu alloy.These indicate that the refinement fading will not occur only when both the TiC particles and TiAl3 compound of Al-Ti-C refiner are stable in Al alloys.

  7. Magnetic Properties of NdAl2

    DEFF Research Database (Denmark)

    Bak, P.

    1974-01-01

    The magnetic properties of NdAl2 are calculated using a Hamiltonian including crystal-field and isotropic exchange interaction terms. A two-dimensional mean-field theory is evaluated to calculate single-crystal magnetization curves. It is shown that the magnetic properties can be understood using...... the crystal-field parameters derived from the magnetic exciton spectrum measured by Houmann et al. by means of inelastic neutron scattering. The combined lambda -Schottky anomaly in the heat capacity is explained. No additional parameters are introduced....

  8. PERFILES PROFESIONALES Y VALORES RELATIVOS AL TRABAJO

    OpenAIRE

    Moreno, José Eduardo; Marcaccio, Antonela

    2014-01-01

    El objetivo del presente trabajo es evaluar la relación existente entre los valores relativos al trabajo y algunos perfiles profesionales (contabilidad y administración, marketing y ventas, y recepción). El instrumento utilizado es la Escala Argentina de Valores Relativos al Trabajo (Moreno & Marcaccio, 2012) que contiene cuatro subescalas de cinco ítems cada una, a saber: Realización Personal, Reconocimiento Social, Altruismo y Aspiraciones Económicas. La muestra incluye a 425 sujetos (40% v...

  9. Trastornos temporomandibulares en adictos al qat

    OpenAIRE

    Orlando Guerra Cobián; Raúl J Pupo Triguero; Humberto Sarracent Pérez; Kirenia M Rabilero Salgado

    2012-01-01

    Introducción: los trastornos temporomandibulares se asocian frecuentemente al hábito de masticar qat, pero se carece de estudios que detallan sus particularidades, por lo que se realiza este trabajo, con los objetivos de determinar la prevalencia de trastornos temporomandibulares en pacientes adictos al qat, identificar los hallazgos clínicos- radiográficos asociados y clasificar los trastornos temporomandibulares presentes en la población estudiada. Métodos: se realizó un estudio prospectivo...

  10. Complementary and Alternative Therapies in ALS

    Science.gov (United States)

    Bedlack, Richard S.; Joyce, Nanette; Carter, Gregory T.; Pagononi, Sabrina; Karam, Chafic

    2015-01-01

    Synopsis Given the severity of their illness and lack of effective disease modifying agents, it is not surprising that most patients with ALS consider trying complementary and alternative therapies. Some of the most commonly considered alternative therapies include special diets, nutritional supplements, cannabis, acupuncture, chelation and energy healing. This chapter reviews these in detail. We also describe 3 models by which physicians may frame discussions about alternative therapies: paternalism, autonomy and shared decision making. Finally, we review a program called ALSUntangled which using shared shared decision making to review alternative therapies for ALS. PMID:26515629

  11. Surface study and thickness control of thin Al2O3 film on Cu-9%Al(111) single crystal

    International Nuclear Information System (INIS)

    Yamauchi, Yasuhiro; Yoshitake, Michiko; Song Weijie

    2004-01-01

    We were successful in growing a uniform flat Al 2 O 3 film on the Cu-9%Al(111) surface using the improved cleaning process, low ion energy and short time sputtering. The growth of ultra-thin film of Al 2 O 3 on Cu-9%Al was investigated using Auger electron spectroscopy (AES) and a scanning electron microscope (SEM). The Al 2 O 3 film whose maximum thickness was about 4.0 nm grew uniformly on the Cu-9%Al surface. The Al and O KLL Auger peaks of Al 2 O 3 film shifted toward low kinetic energy, and the shifts were related to Schottky barrier formation and band bending at the Al 2 O 3 /Cu-9%Al interface. The thickness of Al 2 O 3 film on the Cu-9%Al surface was controlled by the oxygen exposure

  12. Isothermal cross-sections of Sr-Al-Ge and Ba-Al-Ge systems at 673 K

    International Nuclear Information System (INIS)

    Kutsenok, N.L.; Yanson, T.I.

    1987-01-01

    X-ray and microstructural analyses are used to study phase equilibria in Sr-Al-Ge and Ba-Al-Ge systems. Existence of SrAl 2 Ge 2 , Sr(Al, Ge) 2 Ba(Al, Ge) 2 , Sr 3 Al 2 Ge 2 , Ba 3 Al 2 Ge 2 ternary compounds is confirmed, a new BaGe 4 binary compound and also new ternary compounds of approximate composition Sr 57 Al 30 Ge 13 and Ba 20 Al 40 Ge 40 , which crystal structure is unknown, are detected. Aluminium solubility in SrAl 4 and BaAl 4 binary compounds (0.05 atomic fraction) is determined. Ba(Al, Ge) 2 compound homogeneity region is defined more exactly (aluminium content varies from 0.27 to 0.51 at. fractions)

  13. A study on preparation and hydriding of β-Mg2Al3 and γ-Mg17Al12

    International Nuclear Information System (INIS)

    Hadi Suwarno

    2009-01-01

    The mechanism of the synthetic formation of β-Mg 2 Al 3 and γ-Mg 17 Al 12 has been studied. Mechanical alloying of Mg and Al powders with the atomic ratio of Mg:Al = 2:3 in toluene solution yields β-Mg 2 Al 3 compound after milling for 30 h. The γ-Mg 17 Al 12 can be formed by heating the β-Mg 2 Al 3 at 430°C under high vacuum. The measured hydrogen capacities of β-Mg 2 Al 3 and γ-Mg 17 Al 12 as hydride at 300°C are 3.2 and 4.9 wt%, respectively. Microstructure of the Mg-Al specimen shows that on hydriding at 300°C the polygonal shape of the γ-Mg 17 Al 12 changes into irregular shapes which are composed of γ-MgH 2 and Al. (author)

  14. Computer aided cooling curve analysis for Al-5Si and Al-11Si alloys

    African Journals Online (AJOL)

    user

    fine fibrous form (Hess and Blackmun, 1975; Dahle et al., 2005). ..... grain structure in the casting (Apelian et al., 1984), which in turn are supported in the present work by a decreased ..... Liao H., Zhang M., Wu Q., Wang H. and Sun G., 2007.

  15. Preparation, deformation, and failure of functional Al-Sn and Al-Sn-Pb nanocrystalline alloys

    Science.gov (United States)

    Noskova, N. I.; Vil'Danova, N. F.; Filippov, Yu. I.; Churbaev, R. V.; Pereturina, I. A.; Korshunov, L. G.; Korznikov, A. V.

    2006-12-01

    Changes in the structure, hardness, mechanical properties, and friction coefficient of Al-30% Sn, Al-15% Sn-25% Pb, and Al-5% Sn-35% Pb (wt %) alloys subjected to severe plastic deformation by equal-channel angular pressing (with a force of 40 tonne) and by shear at a pressure of 5 GPa have been studied. The transition into the nanocrystalline state was shown to occur at different degrees of plastic deformation. The hardness exhibits nonmonotonic variations, namely, first it increases and subsequently decreases. The friction coefficient of the Al-30% Sn, Al-15% Sn-25% Pb, and Al-5% Sn-35% Pb alloys quenched from the melt was found to be 0.33; the friction coefficients of these alloys in the submicrocrystalline state (after equal-channel angular pressing) equal 0.24, 0.32, and 0.35, respectively. The effect of disintegration into nano-sized powders was found to occur in the Al-15% Sn-25% Pb, and Al-5% Sn-35% Pb alloys after severe plastic deformation to ɛ = 6.4 and subsequent short-time holding.

  16. Sintering Behavior of CNT Reinforced Al6061 and Al2124 Nanocomposites

    Directory of Open Access Journals (Sweden)

    Nouari Saheb

    2014-01-01

    Full Text Available Ball milling and spark plasma sintering were successfully used to produce carbon nanotube reinforced Al6061 and Al2124 nanocomposites which have potential applications in the fields of aerospace, automotive, electronics, and high precision instrumentation. Al2124 and Al6061 nanocomposite powders containing 0.5 to 2 wt.% CNTs prepared through sonication and wet ball milling were spark plasma sintered at 400, 450, and 500°C for 20 minutes under a pressure of 35 MPa. CNTs were better dispersed, and less agglomerated and had good adhesion to the matrix in composites containing 1 wt.% CNTs. The increase of CNT content to 2 wt.% led to the formation of CNT clusters which resulted in less uniform and homogenous composite powders. Almost full densification of Al6061 reinforced with CNTs was achieved at 500°C. Also, CNTs reinforced Al2124 nanocomposites reached very high densities at 500°C. Composites reinforced with 1 wt.% CNTs displayed better densification compared to composites containing 2 wt.% CNTs. The increase of CNTs content from 0.5 to 1 wt.% increased the hardness of the Al6061 and Al2124 alloys to maximum values. Further increase of CNTs content to 2 wt.% decreased the hardness to values lower than that of the monolithic alloys.

  17. Al-muammar et al., Afr J Tradit Complement Altern Med. (2016) 13(1 ...

    African Journals Online (AJOL)

    PROF ADEWUNMI

    Al-muammar et al., Afr J Tradit Complement Altern Med. (2016) 13(1):17- .... Feed and water were provided ad libitum for one week before the start of experiment for adaptation. The basal .... The mean value of feed intake (g/day/rat) for all treated groups was slightly reduced as compared to the negative control group. On the.

  18. Mechanical properties and deformation behavior of Al/Al7075, two-phase material

    International Nuclear Information System (INIS)

    Sherafat, Z.; Paydar, M.H.; Ebrahimi, R.; Sohrabi, S.

    2010-01-01

    In the present study, mechanical properties and deformation behavior of Al/Al7075, two-phase material were investigated. The two-phase materials were fabricated by mixing commercially pure Al powder with Al7075 chips and consolidating the mixture through hot extrusion process at 500 o C. Mechanical properties and deformation behavior of the fabricated samples were evaluated using tensile and compression tests. A scanning electron microscope was used to study the fracture surface of the samples including different amount of Al powder, after they were fractured in tensile test. The results of the tensile and compression tests showed that with decreasing the amount of Al powder, the strength increases and ductility decreases. Calculation of work hardening exponent (n) indicated that deformation behavior does not follow a regular trend. In a way that the n value was approved to be variable and a strong function of strain and Al powder wt% of the sample. The results of the fractography studies indicate that the type of fracture happened changes from completely ductile to nearly brittle by decreasing the wt% of Al powder from 90% to 40%.

  19. Surface modified Al2O3 in fluorinated polyimide/Al2O3 ...

    Indian Academy of Sciences (India)

    guest group into a host structure without a major struc- tural modification of the ... on nano-structure size (Li et al 2009). Among ... naocomposite by the decrease of interfacial areas between ... pling agent which usually has a long alkyl tail shows a good ... the mechanical and thermal properties of polymers (Li et al. 2010).

  20. The ALS-FTD-Q: A new screening tool for behavioral disturbances in ALS

    NARCIS (Netherlands)

    Raaphorst, J.; Beeldman, E.; Schmand, B.; Berkhout, J.; Linssen, W.H.J.P.; Van den Berg, L.H.; Pijnenburg, Y.A.L.; Grupstra, H.F.; Weikamp, J.G.; Schelhaas, H.J.; Papma, J.M.; van Swieten, J.C.; de Visser, M.; de Haan, R.J.

    2012-01-01

    Objective: The assessment of behavioral disturbances in amyotrophic lateral sclerosis (ALS) is important because of the overlap with the behavioral variant of frontotemporal dementia (ALS-bvFTD). Motor symptoms and dysarthria are not taken into account in currently used behavioral questionnaires. We

  1. The ALS-FTD-Q: a new screening tool for behavioural disturbances in ALS

    NARCIS (Netherlands)

    Raaphorst, J.; Beeldman, E.; Schmand, B.; Berkhout, J.; Linssen, W.H.J.P.; van den Berg, L.H.; Pijnenburg, Y.A.; Grupstra, H.F.; Weikamp, J.G.; Schelhaas, H.J.; Papma, J.M.; van Swieten, J.C.; de Visser, M.; de Haan, R.J.

    2012-01-01

    Objective: The assessment of behavioral disturbances in amyotrophic lateral sclerosis (ALS) is important because of the overlap with the behavioral variant of frontotemporal dementia (ALS-bvFTD). Motor symptoms and dysarthria are not taken into account in currently used behavioral questionnaires. We

  2. The ALS-FTD-Q A new screening tool for behavioral disturbances in ALS

    NARCIS (Netherlands)

    Raaphorst, Joost; Beeldman, Emma; Schmand, Ben; Berkhout, Joris; Linssen, Wim H. J. P.; van den Berg, Leonard H.; Pijnenburg, Yolande A.; Grupstra, Hepke F.; Weikamp, Janneke G.; Schelhaas, H. Jurgen; Papma, Janne M.; van Swieten, John C.; de Visser, Marianne; de Haan, Rob J.

    2012-01-01

    Objective: The assessment of behavioral disturbances in amyotrophic lateral sclerosis (ALS) is important because of the overlap with the behavioral variant of frontotemporal dementia (ALS-bvFTD). Motor symptoms and dysarthria are not taken into account in currently used behavioral questionnaires. We

  3. The ALS-FTD-Q: a new screening tool for behavioral disturbances in ALS

    NARCIS (Netherlands)

    Raaphorst, J.; Beeldman, E.; Schmand, B.A.; Berkhout, J.; Linssen, W.H.J.P.; Berg, L.H. van den; Pijnenburg, Y.A.; Grupstra, H.F.; Weikamp, J.G.; Schelhaas, H.J.; Papma, J.M.; van Swieten, J.C.; Visser, M. de; Haan, R.J. de

    2012-01-01

    OBJECTIVE: The assessment of behavioral disturbances in amyotrophic lateral sclerosis (ALS) is important because of the overlap with the behavioral variant of frontotemporal dementia (ALS-bvFTD). Motor symptoms and dysarthria are not taken into account in currently used behavioral questionnaires. We

  4. InAlGaAs/AlGaAs quantum wells: line widths, transition energies and segregation

    DEFF Research Database (Denmark)

    Jensen, Jacob Riis; Hvam, Jørn Märcher; Langbein, Wolfgang

    2000-01-01

    We investigate the optical properties of InAlCaAs/AlGaAs quantum wells pseudomorphically grown on GaAs using molecular beam epitaxy (MBE). The transition energies, measured with photoluminescence (PL), are modelled solving the Schrodinger equation, and taking into account segregation in the group...

  5. Direct observations of grain boundary phenomena during indentation of Al and Al-Mg thin films

    NARCIS (Netherlands)

    Soer, WA; De Hosson, JTM; Minor, AM; Stach, EA; Morris, Joan K.; Corcoran, SG; Joo, YC; Moody, NR; Suo, Z

    2004-01-01

    The deformation behaviour of Al and Al-Mg thin films has been studied with the unique experimental approach of in-situ nanoindentation in a transmission electron microscope. This paper concentrates on the role of solute Mg additions in the transfer of plasticity across grain boundaries. The

  6. Burden of rare variants in ALS genes influences survival in familial and sporadic ALS.

    Science.gov (United States)

    Pang, Shirley Yin-Yu; Hsu, Jacob Shujui; Teo, Kay-Cheong; Li, Yan; Kung, Michelle H W; Cheah, Kathryn S E; Chan, Danny; Cheung, Kenneth M C; Li, Miaoxin; Sham, Pak-Chung; Ho, Shu-Leong

    2017-10-01

    Genetic variants are implicated in the development of amyotrophic lateral sclerosis (ALS), but it is unclear whether the burden of rare variants in ALS genes has an effect on survival. We performed whole genome sequencing on 8 familial ALS (FALS) patients with superoxide dismutase 1 (SOD1) mutation and whole exome sequencing on 46 sporadic ALS (SALS) patients living in Hong Kong and found that 67% had at least 1 rare variant in the exons of 40 ALS genes; 22% had 2 or more. Patients with 2 or more rare variants had lower probability of survival than patients with 0 or 1 variant (p = 0.001). After adjusting for other factors, each additional rare variant increased the risk of respiratory failure or death by 60% (p = 0.0098). The presence of the rare variant was associated with the risk of ALS (Odds ratio 1.91, 95% confidence interval 1.03-3.61, p = 0.03), and ALS patients had higher rare variant burden than controls (MB, p = 0.004). Our findings support an oligogenic basis with the burden of rare variants affecting the development and survival of ALS. Copyright © 2017 The Author(s). Published by Elsevier Inc. All rights reserved.

  7. First-principles study of L10 Ti-Al and V-Al alloys

    International Nuclear Information System (INIS)

    Chubb, S.R.; Papaconstantopoulos, D.A.; Klein, B.M.

    1988-01-01

    As a first step towards understanding the reduced embrittlement of L1 0 Ti-Al alloys which accompanies the introduction of small concentrations of V, we have determined from first principles, using full-potential linearized--augmented-plane-wave calculations, the equilibrium values of the structural parameters and the associated electronic structure for the stoichiometric (L1 0 ) Ti-Al (tetragonal) compound. Our calculated values of c/a and a are in good agreement with experiment. Using the same method of calculation, we have also studied the electronic structure associated with the (hypothetical) L1 0 V-Al alloy that would form when V is substituted for Ti. We find that (1) the electronic structures of these V-Al alloys are relatively insensitive to variations of c/a and a; (2) near the Ti-Al equilibrium geometry, the electronic structures of the V-Al and Ti-Al alloys are very similar; and (3) that a rigid-band model involving substitution of V for Ti can be used to gain a qualitative understanding of the reduction in c/a which accompanies the introduction of small concentrations of V. We relate the reduction in c/a to important changes in the bonding that accompany the occupation of bands immediately above the Fermi level of the stoichiometric Ti-Al compound

  8. NEK1 genetic variability in a Belgian cohort of ALS and ALS-FTD patients.

    Science.gov (United States)

    Nguyen, Hung Phuoc; Van Mossevelde, Sara; Dillen, Lubina; De Bleecker, Jan L; Moisse, Matthieu; Van Damme, Philip; Van Broeckhoven, Christine; van der Zee, Julie

    2018-01-01

    We evaluated the genetic impact of the amyotrophic lateral sclerosis (ALS) risk gene never in mitosis gene a-related kinase 1 (NEK1) in a Belgian cohort of 278 patients with ALS (n = 245) or ALS with frontotemporal dementia (ALS-FTD, n = 33) and 609 control individuals. We identified 2 ALS patients carrying a loss-of-function (LOF) mutation, p.Leu854Tyrfs*2 and p.Tyr871Valfs*17, that was absent in the control group. A third LOF variant p.Ser1036* was present in 2 sibs with familial ALS but also in an unrelated control person. Missense variants were common in both patients (3.6%) and controls (3.0%). The missense variant, p.Arg261His, which was previously associated with ALS risk, was detected with a minor allele frequency of 0.90% in patients compared to 0.33% in controls. Taken together, NEK1 LOF variants accounted for 1.1% of patients, although interpretation of pathogenicity and penetrance is complicated by the observation of occasional LOF variants in unaffected individuals (0.16%). Furthermore, enrichment of additional ALS gene mutations was observed in NEK1 carriers, suggestive of a "second hit" model were NEK1 variants may modify disease presentation of driving mutations. Copyright © 2017 The Author(s). Published by Elsevier Inc. All rights reserved.

  9. The Genyornis Egg: Response to Miller et al.'s commentary on Grellet-Tinner et al., 2016

    Science.gov (United States)

    Grellet-Tinner, Gerald; Spooner, Nigel A.; Handley, Warren D.; Worthy, Trevor H.

    2017-04-01

    Williams (1981) and Williams and Rich (1991) attributed Australian Quaternary fossil eggshell that differed from that of emu Dromaius novaehollandiae to the extinct bird Genyornis newtoni without any osteological or embryonic support. Such association by proximity or abundance mirrors the case of the mistaken association of oviraptor eggs to Protoceratops in the 1920's by Andrews (Grellet-Tinner and Makovicky, 2006). No other candidate species was considered, and this attribution has been unchallenged and followed by everyone thereafter. Much research has been done on this Australian eggshell, with one result being that the extinction of the parent of this eggshell is the most well documented for a taxon in Australia (e.g., Miller et al., 1999, 2005). Grellet-Tinner et al. (2016) raised several problems with the identity of the eggshell Williams (1981) attributed to Genyornis newtoni and suggested that extinct megapodes of the genus Progura were the more likely layer of this eggshell type, therein referred to as ;putative Genyornis oological material; (PGOM). Miller et al. (2017) challenged our hypothesis stating that ;Based on the dimensions of the reconstructed Spooner Egg,Grellet-Tinner et al. (2016)argue that PGOM is too small for a bird with the body mass estimated for Genyornis (168-275 kg) … …[and] …. None of the additional PGOM observations reported byGrellet-Tinner et al. (2016)are inconsistent with a Genyornis parent;. Here we take the opportunity to respond to their critique, the basis of which resolves into a few points, which we address in turn.

  10. Fluctuations of charge variance and interaction time for dissipative processes in 27 Al + 27 Al collision

    International Nuclear Information System (INIS)

    Berceanu, I.; Andronic, A.; Duma, M.

    1999-01-01

    The systematic studies of dissipative processes in light systems were completed with experiments dedicated to the measurement of the excitation functions in 19 F + 27 Al and 27 Al + 27 Al systems in order to obtain deeper insight on DNS configuration and its time evolution. The excitation function for 19 F + 27 Al system evidenced fluctuations larger than the statistical errors. Large Z and angular cross correlation coefficients supported their non-statistical nature. The energy dependence of second order observables, namely the second moment of the charge distribution and the product ω·τ (ω - the angular velocity of the DNS and τ its mean lifetime) extracted from the angular distributions were studied for 19 F + 27 Al case. In this contribution we are reporting the preliminary results of similar studies performed for 27 Al + 27 Al case. The variance of the charge distribution were obtained fitting the experimental charge distribution with a Gaussian centered on Z = 13 and the product ω·τ was extracted from the angular distributions. The results for 19 F + 27 Al case are confirmed by a preliminary analysis of the data for 27 Al + 27 Al system. The charge variance and ω·τ excitation functions for Z = 11 fragment are represented together with the excitation function of the cross section. One has to mention that the data for 27 Al + 27 Al system were not corrected for particle evaporation processes. The effect of the evaporation corrections on the excitation function was studied using a Monte Carlo simulation. The α particle evaporation was also included and the evaluation of the particle separation energies was made using experimental masses of the fragments. The excitation functions for 27 Al + 27 Al system for primary and secondary fragments were simulated. No structure due to particle evaporation was observed. The correlated fluctuations in σ Z and ω·τ excitation functions support a stochastic exchange of nucleons as the main mechanism for

  11. 26Mg(p,n)26Al and 23Na(α,n)26Al reactions

    International Nuclear Information System (INIS)

    Skelton, R.T.

    1985-01-01

    Cross sections for the 26 Mg(p,n) 26 Al reaction were measured from threshold at 4.988 MeV to 5.820 MeV. Cross sections for the 23 Na(α,n) 26 Al reaction were measured from threshold at 3.483 MeV to 4.597 MeV. In each case, separate measurements were to the ground state and to the first and second excited states of 26 Al. Cross sections for the inverse reactions were calculated and reaction rate factors relating to the destruction of 26 Al in a supernova environment were determined. Astrophysical implications relating to the observation of live and extinct 26 Al are discussed. Excitation functions for several additional exit channels for the 26 Mg + rho and 23 Na + α reactions are reported

  12. Grain refinement of 7075Al alloy microstructures by inoculation with Al-Ti-B master alloy

    Science.gov (United States)

    Hotea, V.; Juhasz, J.; Cadar, F.

    2017-05-01

    This paper aims to bring some clarification on grain refinement and modification of high strength alloys used in aerospace technique. In this work it was taken into account 7075 Al alloy, and the melt treatment was carried out by placing in the form of master alloy wire ternary AlTiB the casting trough at 730°C. The morphology of the resulting microstructures was characterized by optical microscopy. Micrographs unfinished and finished with pre-alloy containing ternary Al5Ti1B evidence fine crystals, crystal containing no columnar structure and highlights the size of the dendrites, and intermetallic phases occurring at grain boundaries in Al-Zn-Mg-Cu alloy. It has been found that these intermetallic compounds are MgZn2 type. AlTiB master alloys finishing ensures a fine eutectic structure, which determines the properties of hardware and improving the mechanical properties of aluminum alloys used in aeronautical engineering.

  13. Al2O3 adherence on CoCrAl alloys

    International Nuclear Information System (INIS)

    Kingsley, L.M.

    1980-04-01

    Adherence of protective oxides on NiCrAl and CoCrAl superalloys has been promoted by a dispersion of a highly oxygen reactive element or its oxide being produced within the protection system. Two aspects of this subject are investigated here: the use of Al 2 O 3 as both the dispersion and protective oxide; and the production of an HfO 2 dispersion while simultaneously aluminizing the alloy. It was found that an Al 2 O 3 dispersion will act to promote the adherence of an external scale of Al 2 O 3 to a degree comparable to previously tested dispersions and an HfO 2 dispersion comparable to that produced by a Rhines pack treatment is produced during aluminization

  14. Production of 26Al by spallation of Fe, Si, Al nuclei

    International Nuclear Information System (INIS)

    Paillard, P.

    1977-01-01

    Cross sections for 7 Be, 10 Be and 26 Al formation in Al, Si and Fe targets bombarded with 0.6 and 24GeV protons have been measured by using highly selective chemical separation and low level background counters. Results for 26 Al at 0.6GeV are in mb: 17.9 + or - 2.7 in Al, 12.5 + or - 2.5 in Si and 0.45 + or - 0.14 in Fe; at 24GeV 2.6 + or - 0.5mb in Fe. Results for 10 Be are not valid on account of experimental difficulties. It is deduced from these values of aluminium in cosmic ray propagation that 26 Al is not yet cosmic ray chronometer [fr

  15. Different magnetic behaviour of the Kondo compounds Al3Ce and Al11Ce3

    International Nuclear Information System (INIS)

    Benoit, A.; Flouquet, J.; Palleau, J.; Buevoz, J.L.

    1979-08-01

    Neutron diffraction experiments on the Al 3 Ce and Al 11 Ce 3 compounds have been performed on the multidetector of the I.L.L. high flux reactor. No magnetic structure has been detected on the Al 3 Ce compound down to 20 mK. This confirms the non magnetic ground state of Al 3 Ce. For Al 11 Ce 3 , two magnetic structures have been observed: a ferromagnetic one at 4.2 K and an antiferromagnetic one at 2 K. The antiferromagnetic structure, which corresponds to a propagation vector (0,0,1/3), implies a strong reduction of the magnetic moment of determined sites; this reflects the Kondo character of the compounds

  16. Phase constituents and microstructure of laser cladding Al2O3/Ti3Al reinforced ceramic layer on titanium alloy

    International Nuclear Information System (INIS)

    Li Jianing; Chen Chuanzhong; Lin Zhaoqing; Squartini, Tiziano

    2011-01-01

    Research highlights: → In this study, Fe 3 Al has been chosen as cladding powder due to its excellent properties of wear resistance and high strength, etc. → Laser cladding of Fe 3 Al + TiB 2 /Al 2 O 3 pre-placed alloy powder on Ti-6Al-4V alloy substrate can form the Ti 3 Al/Fe 3 Al + TiB 2 /Al 2 O 3 ceramic layer, which can increase wear resistance of substrate. → In cladding process, Al 2 O 3 can react with TiB 2 leading to formation of Ti 3 Al and B. → This principle can be used to improve the Fe 3 Al + TiB 2 laser-cladded coating. - Abstract: Laser cladding of the Fe 3 Al + TiB 2 /Al 2 O 3 pre-placed alloy powder on Ti-6Al-4V alloy can form the Ti 3 Al/Fe 3 Al + TiB 2 /Al 2 O 3 ceramic layer, which can greatly increase wear resistance of titanium alloy. In this study, the Ti 3 Al/Fe 3 Al + TiB 2 /Al 2 O 3 ceramic layer has been researched by means of electron probe, X-ray diffraction, scanning electron microscope and micro-analyzer. In cladding process, Al 2 O 3 can react with TiB 2 leading to formation of amount of Ti 3 Al and B. This principle can be used to improve the Fe 3 Al + TiB 2 laser cladded coating, it was found that with addition of Al 2 O 3 , the microstructure performance and micro-hardness of the coating was obviously improved due to the action of the Al-Ti-B system and hard phases.

  17. The Existence of a Designer Al=Al Double Bond in the LiAl2 H4- Cluster Formed by Electronic Transmutation.

    Science.gov (United States)

    Lundell, Katie A; Zhang, Xinxing; Boldyrev, Alexander I; Bowen, Kit H

    2017-12-22

    The Al=Al double bond is elusive in chemistry. Herein we report the results obtained via combined photoelectron spectroscopy and ab initio studies of the LiAl 2 H 4 - cluster that confirm the formation of a conventional Al=Al double bond. Comprehensive searches for the most stable structures of the LiAl 2 H 4 - cluster have shown that the global minimum isomer I possesses a geometric structure which resembles that of Si 2 H 4 , demonstrating a successful example of the transmutation of Al atoms into Si atoms by electron donation. Theoretical simulations of the photoelectron spectrum discovered the coexistence of two isomers in the ion beam, including the one with the Al=Al double bond. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  18. Microstructural defects modeling in the Al-Mo system

    International Nuclear Information System (INIS)

    Pascuet, Maria I.; Fernandez, Julian R.; Monti, Ana M.

    2006-01-01

    In this work we have utilized computer simulation techniques to study microstructural defects, such as point defects and interfaces, in the Al-Mo alloy. Such alloy is taken as a model to study the Al(fcc)/U-Mo(bcc) interface. The EAM interatomic potential used has been fitted to the formation energy and lattice constant of the AlMo 3 intermetallic. Formation of vacancies for both components Al and Mo and anti-sites, Al Mo and Mo Al , as well as vacancy migration was studied in this structure. We found that the lowest energy defect complex that preserves stoichiometry is the antisite pair Al Mo +Mo Al , in correspondence with other intermetallics of the same structure. Our results also suggest that the structure of the Al(fcc)/Mo(bcc) interface is unstable, while that of the Al(fcc)/Al 5 Mo interface is stable, as observed experimentally. (author) [es

  19. The constitution of alloys in the Al-rich corner of the Al-Si-Sm ternary system

    International Nuclear Information System (INIS)

    Markoli, B.; Spaic, S.; Zupanic, F.

    2001-01-01

    The constitution of alloys and the liquidus surface in the Al-rich corner of the Al-Si-Sm ternary system were determined by the examination of controlled heated and cooled specimens, as well as heat-treated specimens by means of optical and scanning electron microscopy, energy-dispersive X-ray spectroscopy, differential thermal analysis and X-ray diffraction. The Al-rich corner of the Al-Si-Sm ternary system comprises five regions of primary crystallisation (α Al , β Si , Al 3 Sm, Al 2 Si 2 Sm and AlSiSm) with following characteristic invariant reaction sequences: ternary eutectic reaction L → α Al + β Si + Al 2 Si 2 Sm, and two liquidus transition reactions, i. e., L + Al 3 Sm → α Al + AlSiSm, and L + AlSiSm → α Al + Al 2 Si 2 Sm. Along with the position of ternary eutectic and both interstitial points in the Al-rich corner of the Al-Si-Sm ternary system, the temperatures for each reaction were determined. (orig.)

  20. The constitution of alloys in the Al-rich corner of the Al-Si-Sm ternary system

    Energy Technology Data Exchange (ETDEWEB)

    Markoli, B.; Spaic, S. [Ljubljana Univ. (Slovenia). Faculty of Natural Science and Engineering; Zupanic, F. [Maribor Univ. (Slovenia). Faculty of Mechanical Engineering

    2001-09-01

    The constitution of alloys and the liquidus surface in the Al-rich corner of the Al-Si-Sm ternary system were determined by the examination of controlled heated and cooled specimens, as well as heat-treated specimens by means of optical and scanning electron microscopy, energy-dispersive X-ray spectroscopy, differential thermal analysis and X-ray diffraction. The Al-rich corner of the Al-Si-Sm ternary system comprises five regions of primary crystallisation ({alpha}{sub Al}, {beta}{sub Si}, Al{sub 3}Sm, Al{sub 2}Si{sub 2}Sm and AlSiSm) with following characteristic invariant reaction sequences: ternary eutectic reaction L {yields} {alpha}{sub Al} + {beta}{sub Si} + Al{sub 2}Si{sub 2}Sm, and two liquidus transition reactions, i. e., L + Al{sub 3}Sm {yields} {alpha}{sub Al} + AlSiSm, and L + AlSiSm {yields} {alpha}{sub Al} + Al{sub 2}Si{sub 2}Sm. Along with the position of ternary eutectic and both interstitial points in the Al-rich corner of the Al-Si-Sm ternary system, the temperatures for each reaction were determined. (orig.)