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Search Results: 1 - 10 of 468446 matches for " MARTHA MARíA; ROMIEU "
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Efecto de la contaminación ambiental sobre las consultas por infecciones respiratorias en ni os de la Ciudad de México
TéLLES-ROJO MARTHA MARíA,ROMIEU ISABELLE,POLO-PE?A MARCO,RUIZ-VELASCO SILVIA
Salud Pública de México , 1997,
Abstract: Objetivo. Modelar la variabilidad en el número de consultas infantiles diarias por motivos respiratorios como consecuencia de los cambios diarios en los niveles de contaminación ambiental, observada en los servicios de urgencias y medicina familiar de un hospital de especialidades del Instituto Mexicano del Seguro Social ubicado en la zona suroeste de la Ciudad de México durante 1993. Material y métodos. Se estudió la correlación entre la presencia de infecciones respiratorias altas y bajas con la exposición a ozono y bióxido de nitrógeno. Para modelar esta asociación se utilizó la técnica de regresión Poisson aplicada sobre modelos de riesgo lineal y no lineal con periodos de latencia entre las mediciones ambientales y la consulta de uno, dos y tres días, así como el promedio de las mediciones de los tres, cinco y siete días previos a la consulta. Resultados. El modelo utilizado estima que un incremento de 50 ppb en el promedio horario de ozono de un día ocasionaría, al día siguiente, un incremento del 9.9% en las consultas de urgencias por infecciones respiratorias altas en el periodo invernal, pudiendo incrementarse hasta en un 30% si el incremento se diera en cinco días consecutivos como promedio. Conclusiones. Los resultados sugieren que la exposición de los menores de 15 a os al ozono y bióxido de nitrógeno inciden significativamente sobre el número de consultas ocasionadas por motivos respiratorios en esta zona de la Ciudad de México.
Efecto de la contaminación ambiental sobre las consultas por infecciones respiratorias en ni?os de la Ciudad de México
TéLLES-ROJO,MARTHA MARíA; ROMIEU,ISABELLE; POLO-PE?A,MARCO; RUIZ-VELASCO,SILVIA; MENESES-GONZáLEZ,FERNANDO; HERNáNDEZ-AVILA,MAURICIO;
Salud Pública de México , 1997, DOI: 10.1590/S0036-36341997000600004
Abstract: objective. to model the variability of medical visits by children for respiratory reasons as a consequence of the daily changes in environmental pollution observed in the emergency and family medicine departments of a hospital of the instituto mexicano del seguro social located in the southwest of mexico city during 1993. materials and methods. the correlation between the presence of upper and lower respiratory tract infections and exposure to ozone and nitrogen dioxide was studied. to model this association, the authors used multivariate poisson regression models with linear and non-linear risk, with lag periods between the environmental measurements and the medical visits of one, two and three days, as well as the average of the measurements of three, five and seven days previous to the visit. results. the model estimates that an increment of 50 ppb in the daily average of ozone would cause an increase of 9.9% in emergency visits due to high respiratory tract infections during the winter, which could rise to 30% if the increment would last five consecutive days in average. conclusions. results suggest that exposure of children younger than 15 years of age to ozone and nitrogen dioxide significantly affect the number of medical visits for respiratory causes in this part of mexico city.
Prevalencia de asma y otras enfermedades alérgicas en ni?os escolares de Ciudad Juárez, Chihuahua
Barraza-Villarreal,Albino; Sanín-Aguirre,Luz Helena; Téllez-Rojo,Martha María; Lacasa?a-Navarro,Marina; Romieu,Isabelle;
Salud Pública de México , 2001, DOI: 10.1590/S0036-36342001000500007
Abstract: objective. to assess the prevalence and severity of asthma and allergic diseases in schoolchildren residing in ciudad juarez, chihuahua. material and methods. a cross-sectional study was conducted from april 1998 to may 1999, among 6 174 children from 53 schools in ciudad juarez, chihuahua. the method used was the one recommended by the international study of asthma and allergies in childhood (isaac) to determine the prevalence and severity of asthma, rhinitis, and eczema. parents were asked to answer a standardized questionnaire on current and cumulative prevalence of asthma, rhinitis, and eczema. a sample stratified by level of pollution was selected. results. the cumulative prevalence of medically diagnosed asthma and wheezing was 6.8% (95% ci 6.2, 7.4) and 20% (95% ci 19.7, 21.8), respectively. the prevalence of wheezing in the last 12 months was higher in the group aged 6-8 years than in those aged 11-14 years (9.7% vs. 5.8 %, p<0.01). the prevalence of medically diagnosed rhinitis was 5.0 % (95% ci 4.5, 5.6). the prevalence of medically diagnosed eczema was 4.9% (4.3, 5.4). the prevalence of eczema symptoms in the last 12 months was 12.7% in the 6-8 years group and 13.3% in the 11-14 year group, respectively. severe symptoms of asthma were significantly higher in the 6-8 years group and during the autumn months. conclusions. the prevalence of medically diagnosed and symptomatic asthma was relatively low in comparison with findings from others studies that use similar methods, but the prevalence rates of rhinitis and eczema were higher.
Contaminación atmosférica, asma bronquial e infecciones respiratorias agudas en menores de edad, de La Habana
Romero-Placeres,Manuel; Más-Bermejo,Pedro; Lacasa?a-Navarro,Marina; Rojo-Solís,Martha María Téllez; Aguilar-Valdés,Juan; Romieu,Isabelle;
Salud Pública de México , 2004, DOI: 10.1590/S0036-36342004000300012
Abstract: objective: to identify the relationship between emergency visits for acute respiratory illnesses, acute bronchial asthma crisis (abac) and acute respiratory infections (ari), in children less than 14 years of age, and the daily changes of air pollutant levels, in two central hospitals of havana city, between october 1st 1996 and march 16 1998. material and methods: an ecological time series study was conducted. we assessed the relationship between the presence of acute respiratory illnesses, abac, and ira, and exposure to levels of particles less than 10 μg/m3 (pm10), smoke, and sulfur dioxide (so2); negative binomial regression models were used to assess latency periods of one to five days as well as the cumulative effect of seven days before the emergency visit. results: the levels of atmospheric pollutants were low, in general. the 24-hour mean values for pm10 levels, smoke, and so2, were 59.2 μg/m3 (sd=29.2), 27.7 μg/m3 (sd=21.2), and 21.1 μg/m3 (sd=20.1), respectively. an increase of 20 μg/m3 in the daily average of black smoke was associated with a 2.2% increase (95% ci 0.9-3.6) in the number of emergency visits for abac. a 20μg/m3 increase in the daily average of black smoke and so2 was associated with an increase in ari of 2.4% (95% ci 1.2-3.6), and 5% (95% ci 1.3-5.3), respectively, with a 5-day lag. we also ob served a cumulative effect for all the contaminants studied. conclusions: these results suggest that air pollution levels in havana city affect children's respiratory health; therefore implementation of control measures is necessary, especially those aimed at decreasing motor vehicle exhaust fumes
Discursos sociales sobre la sexualidad: narrativas sobre la diversidad sexual y prácticas de resistencia
Collignon Goribar, María Martha;
Comunicación y sociedad , 2011,
Abstract: this work considers the variety of public discourses in mexico about the legitimacy and inclusion of sexual diversity and difference; its purpose is to reveal the struggles for the establishment of a given socio-sexual order, as well as the social tensions arising from changes in ethical, moral and religious values around the subject of sexuality.
BIENESTAR PSICOLóGICO: EL ESTRéS Y LA CALIDAD DE VIDA EN EL CONTEXTO LABORAL
María Martha Durán
Revista Nacional de Administración , 2010,
Abstract: The changing environment in which we currentlylive has been translated into increased competitionand demands for organizations. This situationaffects employees by generating high levelsof pressure, which in turn become an everydaypart of work. This leads to the emergence of theso-called occupational diseases: stress, burnout,addiction to work and others. Emotional or psychologicalfactors play a decisive role in such diseases.This article discusses aspects related to the quality of professionallife and occupational stress by pointing out personaland organizational implications as well as preventionand coping strategies at both levels.
Discursos sociales sobre la sexualidad: narrativas sobre la diversidad sexual y prácticas de resistencia
MARíA MARTHA COLLIGNON GORIBAR
Comunicación y sociedad , 2011,
Abstract: This work considers the variety of public discourses in Mexico about the legitimacy and inclusion of sexual diversity and difference; its purpose is to reveal the struggles for the es-tablishment of a given socio--sexual order, as well as the social tensions arising from changes in ethical, moral and religious values around the subject of sexuality.This work considers the variety of public discourses in Mexico about the legitimacy and inclusion of sexual diversity and difference; its purpose is to reveal the struggles for the es-- tablishment of a given socio--sexual order, as well as the social tensions arising from changes in ethical, moral and religious values around the subject of sexuality.
Relación entre consultas a urgencias por enfermedad respiratoria y contaminación atmosférica en Ciudad Juárez, Chihuahua
Hernández-Cadena,Leticia; Téllez-Rojo,Martha Ma.; Sanín-Aguirre,Luz Helena; Lacasa?a-Navarro,Marina; Campos,Armando; Romieu,Isabelle;
Salud Pública de México , 2000, DOI: 10.1590/S0036-36342000000400003
Abstract: objective: to assess the relationship of £10 μm particles (pm10) and atmospheric ozone concentrations, with the daily number of emergency visits due to asthma and acute respiratory diseases, among children aged under 15, living in ciudad juarez, chihuahua, mexico. material and methods: between 1998 and 1999, an ecologic study was conducted. atmospheric data were obtained from the environmental protection agency (epa), from eight monitoring stations located in ciudad juarez, chihuahua, and el paso, texas. from july 1997 to december 1998, data from emergency room visits for respiratory illness were abstracted from existing medical records of two mexican institute of social security (imss) hospitals in ciudad juarez. diagnoses were classified into two groups: a) asthma, and b) upper respiratory infections (uri), according to the international classification of diseases (icd-9 and/or idc-10). statistical analysis was carried out using the poisson regression time series method. results: during the study period, the mean 24-hour pm10 level was 34.46 μg/m3 (sd=17.99) and the mean ozone level was 51.60 ppb (sd=20.70). the model shows that an increase of 20 μg/m3 in the mean 24-hour exposure to pm10 was related to an increase of 4.97% (95% ci 0.97-9.13) in emergency visits for asthma, with a 5-day lag, as well as to an increase of 9% (95% ci 1.8-16.8) when a cumulative 5-day exposure was considered. uri increased 2.95% as a cause of emergency room visits, for each 20 μg/m3 increase in the mean 24-hour exposure to pm10. the impact of pm10 on emergency visits for asthma was greater on days with ozone ambient levels exceeded 49 ppb (median value). conclusions: a positive association was found between environmental pm10 and ozone concentrations and the daily number of emergency room visits due to asthma and acute respiratory diseases, even with levels lower than the mexican standard levels. also, a synergic effect between pm10 and o3 was found.
Una propuesta innovadora de evaluación en geometría
Ferrero, María Martha;Ferraris, Cristina;
Educación matemática , 2008,
Abstract: we describe a partial evaluation modality, implemented in the courses of euclidean geometry of the plane and euclidean geometry of the space, which are part of the mathematical education studies of the bariloche regional university center. this proposal of evaluation allows to overcome its function as mere accreditation. the work begins with the assignation to the students of individual and collective problems; then, after one week, follows the oral and written presentation of the student productions; and it culminates with the accreditation. the implementation of this modality demands the preparation and selection of problems. the characteristics of this modality of evaluation are: to consider students' appropriation time of the knowledge, to stimulate them to investigate about the subject to evaluate, to develop communication abilities and to be integrated to the dynamics of the subject, without causing cuts in the teaching-learning process.
Los ensayos clínicos y su contribución a la salud pública cubana Clinical trials and their contribution to Cuban public health
Martha María Fors López
Revista Cubana de Salud Pública , 2012,
Abstract: La salud pública ha avanzado en los últimos a os, en aras de mejorar la calidad de las evidencias científicas que sustentan las intervenciones y determinadas acciones de salud. La evaluación de la efectividad de las intervenciones en el ámbito clínico se basa en el dise o de ensayos clínicos controlados y aleatorizados, que sirven como una de las fuentes más confiables para la toma de decisiones en salud pública, a pesar de sus limitaciones. Se generan tensiones entre los investigadores e instituciones y los sistemas de salud pública, puesto que en ocasiones existen dudas de que los resultados de dichos estudios puedan generalizarse en la práctica. Las diferentes características que conforman el mundo de los investigadores y el de los responsables políticos, incluidos plazos, intereses y prioridades; pueden contribuir a estas tensiones e impedir la conexión entre los resultados de la investigación con los decisores en el campo de la salud pública. En este trabajo se hacen algunas consideraciones al respecto y se explica brevemente la situación en Cuba. Public health has advanced in recent years in order to improve the quality of scientific evidence supporting interventions and specific health actions. The evaluation of the effectiveness of interventions in the clinical setting is mainly based on the design of randomized controlled trials which serve, despite their limitations, as one of the most trusted sources for making public health decisions. On the other hand, there are controversies between the investigators, institutions and the public health systems, due to some uncertainty about the generalization of these results in the public health. The differences between the characteristics of the researchers' world and those of the world of policymakers, including deadlines, interests and priorities, can contribute to these controversies, thus preventing the connection of research findings to decision-makers in this field. This paper made some considerations in this regard and briefly explained the present situation in Cuba.
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