[Ringworm of Trichophyton tonsurans outbreak in a basic school in Valparaíso, Chile]. / Brote de tiña por Trichophyton tonsurans en una escuela básica de Valparaíso, Chile.

BACKGROUND: Ringworm are skin and its annexes infections. Trichophyton tonsurans is an emergent anthropophilic fungus that might cause outbreaks. AIM: To describe a ringworm outbreak by T tonsurans in an elementary school in Valparaíso, Chile. METHODS: A descriptive study was run between June and August, 2018. Students and his closest relatives in contact with them who were clinically diagnosed with ringworm have been considered a case. Mycological studies of samples had been carried out through morphophysiology tests. Data are shown in numbers and percentages. RESULTS: There were 18 cases, 16 kids (15 from kindergarten) and 2 adults. Attack rate was 68% in kindergarten. Nine cases were boys with average age of 6 years old. For 14 cases their nationality was Chilean and in 1 case Haitian. First case was a Chilean boy, and primary case was a Haitian boy. The most frequent location was face. Ten cases yielded positive cultures for T tonsurans. Most of the patients needed terbinafine treatment after a therapeutic failure performed with clotrimazole. CONCLUSION: T. tonsurans outbreak ocurred mainly in kindergarten male. The most frequent location was face. Most of the patients needed terbinafine treatment after a therapeutic failure with clotrimazole.

Brote de tiña por Trichophyton tonsurans en una escuela básica de Valparaíso, Chile / Ringworm of Trichophyton tonsurans outbreak in a basic school in Valparaíso, Chile

Resumen Introducción: Las tiñas son infecciones que afectan la piel y anexos. Trichophyton tonsurans es un hongo antropofílico emergente que puede provocar brotes. Objetivo: Describir un brote de tiña por T. tonsurans en una escuela de Valparaíso. Materiales y Método: Estudio descriptivo realizado entre junio-agosto de 2018. Se consideró caso a todo alumno de la escuela y a familiares directos en contacto con ellos, con diagnóstico clínico de tiña. El estudio micológico de las muestras tomadas se realizó a través de pruebas morfo-fisiológicas. Los datos se expresaron en números y porcentajes. Resultados: Hubo 18 casos, 16 niños (15 del kindergarten) y dos adultos. Tasa de ataque en kindergarten fue de 68%. Nueve casos fueron varones con promedio de edad de 6 años. Catorce de nacionalidad chilena y una haitiana. El caso índice fue un niño chileno y el primario el niño haitiano. La localización más frecuente fue en el rostro. Diez casos tuvieron cultivo con desarrollo de T. tonsurans. La mayoría requirió tratamiento con terbinafina por fracaso terapéutico con clotrimazol. Conclusiones: El brote por T. tonsurans ocurrió principalmente en varones del kindergarten. La principal localización fue en el rostro. La mayoría de los casos requirió terbinafina como tratamiento por fracaso terapéutico con clotrimazol.

Background: Ringworm are skin and its annexes infections. Trichophyton tonsurans is an emergent anthropophilic fungus that might cause outbreaks. Aim: To describe a ringworm outbreak by T tonsurans in an elementary school in Valparaíso, Chile. Methods: A descriptive study was run between June and August, 2018. Students and his closest relatives in contact with them who were clinically diagnosed with ringworm have been considered a case. Mycological studies of samples had been carried out through morphophysiology tests. Data are shown in numbers and percentages. Results: There were 18 cases, 16 kids (15 from kindergarten) and 2 adults. Attack rate was 68% in kindergarten. Nine cases were boys with average age of 6 years old. For 14 cases their nationality was Chilean and in 1 case Haitian. First case was a Chilean boy, and primary case was a Haitian boy. The most frequent location was face. Ten cases yielded positive cultures for T tonsurans. Most of the patients needed terbinafine treatment after a therapeutic failure performed with clotrimazole. Conclusion: T. tonsurans outbreak ocurred mainly in kindergarten male. The most frequent location was face. Most of the patients needed terbinafine treatment after a therapeutic failure with clotrimazole.

Application and characterization of electroactive membranes based on carbon nanotubes and zerovalent iron nanoparticles.

Carbon nanotube (CNT) membranes were produced from multi-walled CNTs by a filtration technique and used for the removal of the betablocker metoprolol by adsorptive and reactive processes. The reactivity of CNT membranes was enhanced by nanoparticulate zero-valent iron (NZVI) which was deposited on the CNT membranes by pulsed voltammetry applying defined number of pulses (Fe-CNT (100) and Fe-CNT (400) membranes). Surface analysis with SEM showed iron nanoparticle sizes between 19 and 425 nm. Pore size distribution for the different membranes was determined by capillary flow porometry (Galwick fluid). Pore size distribution for all membranes was similar (40 nm), which resulted in a water permeability typical for microfiltration membranes. Metoprolol was removed by the CNT membrane only by sorption, whereas the Fe-CNT membrane revealed also metoprolol degradation due to Fenton type reactions. Further application of electrochemical potentials on both the CNT and the Fe-CNT membranes improved the removal efficiencies to 74% for CNT membranes at 1 V and to 97% for Fe-CNT (400) membranes at 1 V. Seven transformation products have been identified for metoprolol by high-resolution mass spectrometry when electrochemical degradation was performed with CNT and Fe-CNT membranes. Additionally, two of the identified transformation products (TPs) were also observed for Fe-CNT membranes without the application of electrochemical potential. However, only 10% of the degraded metoprolol could be explained by the formation of TPs.

Subjetividad en agrupaciones de personas en situación de discapacidad: explorando la dualidad sujeción-agencia y la visión de discapacidad desde la propia vivencia / Subjectivity in groups of people with disabilities: exploring the subjection - agency duality and the vision of the disabilities from the own living experience

La discapacidad como constructo social está compuesta por corporalidad, estereotipos y conductas de auto aceptación o negación. La discapacidad tiene implicancias a nivel personal y colectivo, demandando un perfeccionamiento en las perspectivas actuales de acción y comprensión por parte de los profesionales vinculados con esta realidad. Esta investigación se realizó con dos propósitos: explorar las construcciones subjetivas de personas en situación de discapacidad que forman parte de agrupaciones de personas con discapacidad; y describir cómo éstas influyen en su forma de organizarse y en sus ocupaciones. El contacto con los y las participantes se realizó mediante la estrategia de informantes clave, la recolección de datos a través de una entrevista semiestructurada y el método de análisis mediante la técnica de análisis de contenido (categorial). Los resultados muestran dos tendencias de funcionamiento en las agrupaciones que pueden llegar a coexistir en un mismo período. La primera de corte reivindicativo (demandar lo que se considera derecho propio) y la segunda tendencia problematizadora (poner en discusión lo que parece una idea irrefutable). Finalmente, la construcción de las personas se comprende desde la tensión existente entre las prácticas de sujeción y agencia relacionadas a la discapacidad, como la sumisión frente a modelos normativos y/o la crítica a la infantilización y asistencialismo.

The concept of disability, defined as a social construct, comprises corporality, stereotypes, and behaviors of self-acceptance or rejection. Subsequent implications of disability at the personal and collective level demand an improvement in its professional comprehension and action. This study’s purposes are to explore the subjective constructions of people with disabilities who are members of groups of people with disabilities; and to describe how these constructions influence both occupations and the way people organize as members of groups of people with disabilities. Contact with participants, data collection, and data analysis were completed through key informants, semi-structured interviews, and the Categorical Content Analysis method, respectively. Results revealed two tendencies of group function that may coexist; the first relates to a demanding standpoint - that is, claiming what is believed to be a right; and the second to a problem-causing standpoint - or arguing what seems to be irrefutable -. Finally, subjective construction of individuals was understood as the fine line existing between the subjection agency practices related to their disability, as well as the submission to normative models and/or the criticism towards infantilization and assistencialism.

SECOND LATIN AMERICAN INTERCOMPARISON ON INTERNAL DOSE ASSESSMENT.

Internal dosimetry intercomparisons are essential for the verification of applied models and the consistency of results'. To that aim, the First Regional Intercomparison was organised in 2005, and that results led to the Second Regional Intercomparison Exercise in 2013, which was organised in the frame of the RLA 9/066 and coordinated by Autoridad Regulatoria Nuclear of Argentina. Four simulated cases covering intakes of (131)I, (137)Cs and Tritium were proposed. Ninteen centres from thirteen different countries participated in this exercise. This paper analyses the participants' results in this second exercise in order to test their skills and acquired knowledge, particularly in the application of the IDEAS Guidelines. It is important to highlight the increased number of countries that participated in this exercise compared with the first one and, furthermore, the improvement in the overall performance. The impact of the International Atomic Energy Agency (IAEA) Projects since 2003 has led to a significant enhancement of internal dosimetry capabilities that strengthen the radiation protection of workers.

Cifras y datos del desarrollo alternativo en Bolivia: "más de diez años de camino recorrido"

Diez años de Desarrollo Alternativo en Bolivia, tiene una raíz de noventa años con la firma del Primer Tratado Internacional sobre fiscalización de drogas, en la Haya - Holanda. Desde ese entonces, mucho se escrito sobre el asunto, gran parte de lo cual ha obedecido a políticas y estrategias de gobiernos interesados en mostrar su capacidad para decidir, sobre la manera de resolver problemas de interés común a la humanidad.

Importancia de la Lutzomia peruensis en la transmisión de la enfermedad de Carrión en el Valle Sagrado de los incas. Urubamba Cusco, Perú / Importance of Lutzomyia peruensis in the transmission of the Carrionïs disease in the Incaïs Sacred Valley. Urubamba Cusco, Peru

En el valle Sagrado de los Incas (Valle del Río Urubamba) encontramos una sola de Lutzomyia, nos referimos a la Lutzomyia suele compartir su habitat con el vector de la enfermedad de Carrión, la Lutzomyia verrucarum. Los aspectos entomológicos fueron levados a cabo, en Mayo de 1998. Las colectas entomológicas se realizaron utilizando trampas de luz CDC toda la noche y en capturas diurnas en las viviendas.Se muestra la importancia de Lutzomyia peruensis incriminándola epidemiológicamente y se detectó Bartonella bacilliformis mediante PCR y haciendo secuenciamiento de ADN. Se presenta también la estimación del riesgo entomólogico de transmisión de bartonelosis por Lutzomyia peruensis, mediante el índice de inoculación de Bartonella bacilliformis

[Reconstructive and functional surgery of the middle ear (review of 276 cases)]. / Cirurgía reconstructivo-funcional del oído medio (revisión de 276 casos).

The present work presents the review of 276 cases that underwent the following surgeries: 62 myringoplasties, 176 tympano-ossicular reconstructions, 9 functional second look surgery and 29 tympanoplasties with ossiculoplasties. Regarding two different parameters, results were as follows: 1) New eardrum after one-year evolution: 94% were complete, 3.8% were perforated and 2.3% had cholesteatoma pearls. 2) Hearing level after one-year evolution: 33% was the same, 29% gained less than 15 dB, 26.8% gained between 15 and 30 dB, and 11.2% gained over 30 dB.