381 research outputs found
Apoyo sanitario durante la invasión y campaña militar de Antonio Maceo en Pinar del Rio
No full textABSTRACT Introduction: a personality who stood out significantly within Pinar del Río and national society during the War of Independence of 1895-1896 was Major General Antonio Maceo. Much has been written about his military exploits, but there are still aspects that are not well supported historically. On the occasion of a political-ideological day in the provinceSubject: of military health was discussed; the insufficient literatures was the reason for undertaking a research aimed at researching the structure of military health that Maceo supposedly had in Pinar del Río during the military campaign in 1896.Methods: A qualitative, historical, situational, and descriptive research was carried out, using the primary and the secondary sources of information collected. The main sources to obtain the data were found in the History Archive and in the Provincial Library of Pinar del Río of the main historical moments with reference to Antonio Maceo.Development: that were published at that time; which allowed to create geographical, chronological and specific thematic aspects, and state.Conclusions: concerning the doctors that really accompanied him and also had a great performance in the attention of the wounded in the main combats, the number of casualties and deaths in the combat actions, the mentioned blood hospitals and the burials carried out in the province. In the opinion of the author, historical facts are mentioned that are typical from Pinar del Río in that military conflict of Maceo.Introducción: una personalidad que sobresalió de manera significativa dentro de la sociedad pinareña y nacional durante la guerra de independencia de 1895 -1896 fue el Mayor General Antonio Maceo. Mucho se ha escrito sobre sus hazañas militares, pero quedan aspectos que no están bien sustentados históricamente. En ocasión de una jornada política ideológica en la provincia donde se abordaba el tema de la sanidad militar; la insuficiente bibliografía, fue motivo para emprender una investigación.Objetivo: indagar sobre la estructura de Sanidad Militar que suponía tenía Maceo en Pinar del Río durante la Campaña militar durante el año 1896.Métodos: se ha realizado una investigación cualitativa, histórica y situacional, descriptiva, utilizando fuentes primarias y secundarias de recolección de información. Las principales fuentes para la obtención de los datos, se encontraron en el Archivo de Historia y en la Biblioteca Provincial de Pinar del Río.Desarrollo: los principales momentos históricos que sobre Antonio Maceo se publicaron en esa época; lo que permitió conformar con aspectos geográficos, cronológicos y la temática específica.Conclusiones: sobre los médicos que realmente lo acompañaron y tuvieron además gran actuación en la atención de heridos en los combates principales, la cifra de bajas y muertos en las acciones combativas, los hospitales de sangre mencionados y los enterramientos realizados en la provincia. A opinión de los autores se mencionan hechos históricos que le son propios a Pinar del Río en esa contienda militar de Maceo
The environmental education in the students of the specialidad welding in Pinar del Río
No full textThe environmental impact of the welding process during learning in the specialized area as well as the exercise of practice for obtaining working qualification in the labor entity students welding specialty in Pinar del Rio has been of interest to the author of this research. The research is the methodological basis dialectical materialist method. From the results obtained it was concluded the need to train a qualified among others show their professional performance in attitudes towards environmental care worker
Factores de riesgo del intento suicida en adolescentes, Pinar del Río
No full textAn observational, analytical case-control study was carried out with the purpose of identifying the risk factors related to suicide attempt in adolescents in Pinar del Rio municipality from January to June 2009. The target group was comprised of the total population from 10 to 19 years old with suicide attempts; the sample consisted of 36 cases vs. 72 controls, chosen by a matching of 1:2, individual and familial risks factors associated with suicide attempt were analyzed as well. Data were obtained by means of the application of a questionnaire designed by the author of the study, the association between the risk factors and suicide attempt was determined using chi square test and the reason of crossed products ratio by punctual estimation and by confidence intervals; among the main results a significant statistical association to suicide attempt was found and the following risk factors: presence of mental disorders in adolescents (depression), mental retardation, schooling difficulties, involuntary boarding school and history of suicide attempt in other family members.Se realizó un estudio observacional analítico de caso y control, con el objetivo de identificar los factores de riesgo relacionados con el intento suicida en los adolescentes del municipio Pinar del Río, en el período comprendido de enero a junio del 2009. El universo del estudio estuvo constituido por la población de 10 a 19 años con intento suicida, quedando conformada la muestra por 36 casos contra 72 controles, seleccionados por un pareo de 1:2, se analizaron los factores de riesgo individuales y familiares asociados al intento suicida. Los datos se obtuvieron mediante la aplicación de un cuestionario diseñado por la autora de la investigación, se determinó la asociación entre los factores de riesgo y el intento suicida, a través de la prueba de Chi cuadrado y la razón de productos cruzados (OR) con estimación puntual y por intervalos de confianza; entre los principales resultados se encontró asociación estadística significativa al intento suicida, de los siguientes factores de riesgo: la presencia de adolescentes con desordenes mentales como depresión y retraso mental, dificultades escolares e internamiento invo luntario y el antecedente de suicidio por otro miembro del hogar
Aportació al coneixement espeleològic del cap des Pinar a Alcúdia
No full text[eng] We show five unknown cavities. These cavities were explored and topographied by the author for 1980-81. During this time he did the militar service in the Alcúdia base. The cavities are in the militar zone called Cap des Pinar, into the municipal district of Alcúdia (Balears).[fre] Nous montrons cinq cavités inédites, explorées et topographiées par I'auteur dans les années 1980-81. Dans cette époque il fit le service militaire a la base d'Alcúdia. Les cavités se trouvent a la zone militaire de Cap des Pinar, Alcúdia (Balears)
Chromatin modifications of hTERT gene in hTERT-immortalized human mesenchymal stem cells upon exposure to radiation
No full textRegulation of telomerase activity is thought to participate in the cellular response to ionizing radiation. Epigenetic mechanisms play a role in this regulation, as well as other mechanisms such as transcription, phosphorylation, etc. Here, we investigated chromatin modifications in telomerase promoter upon exposure to ionizing radiation in human mesenchymal stem cells (hMSC) and telomerase-immortalized hMSCs (hMSC-telo1) together with a hMSC-telo1 cell line in which TRF2 expression was partially repressed (siTRF2 hMSC-telo1). Histone methylations and acetylations were compared in all cell lines after exposure to various doses of ionizing radiation (0.1, 1, 2.5 and 15 Gy) using chromatin immunoprecipitation assay. hTERT gene was shown to be quickly regulated through H3, H4 acetylations, as well as with H3K4 and H3K9 methylations, following radiation exposure, although the kinetic of hMSC-telo1 cells were different, indicative of the higher radioresistivity of these cells. To the author's surprise, there was an upregulation of endogenous telomerase activity in the hMSC-telo1 cells, even though the cells had already expressed high levels of ectopic hTERT. Our results show that telomerase regulation is one of the primary actions in response to damage and epigenetic factors play a major role in this regulation. Our results also suggested that partial silencing of TRF2 enhances the radiosensitivity of these cells, and endogenous telomerase is upregulated upon radiation, even under ectopic expression of hTERT in these cells
Pinar, William F., Autobiography, Politics, and Sexuality: Essays in Curriculum Theory, 1972-1992. New York: Peter Lang, 1994.
No full textPresents 15 essays written between 1972 and 1992 by the author which convey the meaning ofautobiography as curriculum
Feasibility of Bolted Connectors in Hybrid FRP-Steel Structures
No full textDue to the low weight and excellent durability of composite materials, Fibre Reinforced Polymer (FRP) decks mounted on steel superstructures are becoming all the more common in engineering practice. Bolted joints are generally used to facilitate connections between an FRP deck and steel girders in road bridges. The connections are subjected to both high magnitude static forces as well as fatigue loading due to overpassing vehicles. With ever increasing traffic on both road and railway bridges, fatigue performance is of critical concern. Bolted FRP joints have been extensively researched in the past under static loading, but less is known about the fatigue and creep behaviour of such joints. Furthermore, little research exists on non-pultruded FRP profiles connected using bolted connections. Therefore, the objective of this research is to investigate connectors’ feasibility by means of static, fatigue and creep experiments on four different types of bolted joints comprising mechanical connectors and injection techniques. The study focuses on application in vacuum infused GFRP panels with integrated webs made of multi-directional laminates, connected to steel bridge superstructures. In addition, experimental results are validated by Finite Element Analyses (FEA). Based on the obtained results, the novel injected steel-reinforced resin (iSRR) connector developed at TU Delft shows promising potential in hybrid steel-FRP bridges where good fatigue endurance of the connection and local loads in FRP panel, are required.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Steel & Composite Structure
Shear Force in Bolted Connection Due to Traffic and Temperature Loads in Hybrid Steel-FRP Bridges
No full textAs many bridges are reaching the end of their service life, researchers are searching for new solutions to extend the lifespan of those bridges. Fibre reinforce polymers (FRP) could be possible a solution for bridges with deck problems. Lightweight FRP decks can be installed quickly via bolted connectors on steel substructure. In general, shear force in the connector is not taken into account during the design of FRP decks because slip behaviour and interaction with steel substructure is unknown. This research connects to research at TU Delft on non-slip shear connectors for FRP decks. Aim of this paper is to quantify shear forces in bolted connectors due to traffic and temperature loads. The direction of webs, fibres in panel facings and the expansion coefficient of resin has been investigated to determine the influence of the FRP deck on the shear force in the connectors. To investigate the results of traffic loading and temperature loading on real bridges, a database of bridges in the Netherlands has been used. Results from the analyses offer an indication of the influence of the laminates on the shear force in the connectors and show shear force ranges that can occur in existing bridges.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Steel & Composite Structure
Caracterización del cáncer de piel facial. Pinar del Río. 2007
No full textA descriptive cross - sectional study was performed in all patients attending to the provincial dental surgeon office in Abel Santamaría Cuadrado General hospital, they were diagnosed as facial skin malignancy in order to characterize this disease in our enviroment in 2007 being motivated by its high frequency. A survey was applied to every patient having the informed consent previously and meeting the criteria for inclusion.Data were recorded in a form and processed with Epinfo 2002 system and the percentage statistical method was used. All the results were shown in pictures and were analyzed later taking into account the previous author´s knowledge and the scientific information predominating the basal carcinomas being the clinical ulcer nodule the most frequent. 55 year-old peasants were the most affected showing phototype II and coming from rural areas. The nasal aspect was predominating as well as a high percent of actinic keratosis in patiens, most of them presented personal y/or family pathological backgrounds of skin malignancy and the hat was the most used protection. It is concluded that the basal carcinoma was the most frequent facial skin malignancy in our enviroment and its incidence was related to the following variables: age, sex, phototype, living area, occupation, photoprotection,skin premalignant lesions and positive family and personal skin malignancy.Se realizó un estudio descriptivo, transversal a todos los pacientes que acudieron a una consulta provincial de Maxilofacial del Hospital Clínico Quirúrgico Abel Santamaría a los que se les diagnosticó cáncer de piel facial, con el objetivo de caracterizar esta patología en nuestro medio en el año 2007, motivados por su alta frecuencia. Se le aplicó una encuesta a cada paciente, previo consentimiento informado y que cumplieron los criterios de inclusión. Los datos se plasmaron en un formulario y procesaron utilizando el sistema Epinfo 2002 y el método estadístico porcentual. Todos los resultados fueron expresados en cuadros y posteriormente analizados según los conocimientos previos de los autores y la información científica consultada. Predominó el carcinoma basal y de este la forma clínica nóduloulcerada. Los más afectados fueron los hombres de más de 55 años, con fototipo II, residentes en zonas rurales, de ocupación campesinos, la región de la cara que prevaleció fue la nasal y un alto porciento de los pacientes presentaron queratosis actínicas. La mayoría de los pacientes tuvieron antecedentes patológicos personales y/o familiares de cáncer de piel y el medio de protección más usado por nuestros pacientes fue el sombrero. Concluimos que el cáncer de piel facial más frecuente en nuestro medio fue el carcinoma basal y que su incidencia se relacionó con variables como la edad, sexo, fototipo, zona de residencia, ocupación, fotoprotección, presencia de lesiones premalignas en piel y antecedentes familiares y personales positivos de cáncer cutáneo
Contexto y racionalismo en Pinar del Río. Experiencias de planeamiento urbano en Cuba
No full textEl planeamiento urbano en Pinar del Río se ha visto sujeto a diferentes procesos de ajuste conforme con las coyunturas económicas del País, así como por los cambios de perspectiva en los objetivos e, incluso, por las modificaciones en los métodos seguidos. Los paradigmas metodológicos han evolucionado desde el cientificismo racionalista, regulador de todas las actividades humanas tras la búsqueda de un ideal de sociedad, que negaba el contexto, hasta la negociación entre las partes como premisa fundamental de un planeamiento cambiante y competitivo, que se amolda al contexto y se ajusta a las coyunturas.The author explains how Town Planning for Pinar del Rio has gone through several adaptive changes to answer those dictated by Cuba's economic cycles. The ends and means to such planning have also undergone change, we are told. Methodological paradigms have evolved from rationalist scientism which seeks to control human activity to thus build an ideal society but which ignores the demands of context, towards taking inter-party negotiation a the basic premise from which to undertake flexible and competitive Town Planning in the light of context and a fluctuating economic cycle
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