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Search Results: 1 - 10 of 211501 matches for " Diez Martín "
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Discriminación experimental de los rasgos técnicos en la talla bipolar y a mano alzada en lascas a través los cuarzos de Naibor Soit (Garganta de Olduvai, Tanzania)
Sánchez Yustos, P.,Diez Martín, F,Domínguez Rodrigo, M.,Tarri?o Vinagre, A.
Munibe Antropologia-Arkeologia , 2012,
Abstract: La identificación de la talla bipolar puede ser controvertida debido fundamentalmente a la naturaleza petrográfica del cuarzo y a su fracturación heterogénea. Este trabajo pretende superar este problema mediante el desarrollo de un marco explicativo experimental destinado al reconocimiento de los rasgos diagnósticos en las lascas producidas por ambos métodos de talla en la reducción del cuarzo de Naibor Soit (Garganta de Olduvai, Tanzania). El objetivo final de este trabajo es el de utilizar un conjunto de variables relacionadas con la respuesta de esta materia prima a la fractura a mano alzada y bipolar en dos experimentos destinados a individualizar estadísticamente los rasgos técnicos diagnósticos que mejor identifican a la talla bipolar en este tipo de materia prima.
Consenso para el tratamiento de las metástasis cerebrales
Alejandra T. Rabadán,Blanca Diez,Ana María Martínez,Julio Antico
Revista Argentina de Neurocirugía , 2006,
Abstract: El avance en la terapia oncológica ha hecho del tratamiento de las metástasis cerebrales un factor primordial en el tiempo de sobrevida y la calidad de vida de los pacientes con cáncer. A pesar de que existen numerosas publicaciones sobre el tema, no existe todavía un consenso sobre la mejor estrategia terapéutica, probablemente por la heterogeneidad de la población en términos de estado funcional, tipo de neoplasia, control sistémico de la enfermedad y número y localización de las lesiones en el sistema nervioso central. Nuestro objetivo es presentar recomendaciones generales basadas en un análisis racional para guiar el manejo práctico de las metástasis cerebrales. Con este propósito, un equipo multidisciplinario integrado por neurocirujanos, neurooncólogos, neuropatólogos, radioterapeutas y neurólogos fue convocado para conducir una búsqueda minuciosa en las publicaciones en inglés y espa ol a través del PubMed (1980-2006) coincidiendo con el comienzo del empleo de la resonancia magnética en la práctica médica. Se seleccionaron revisiones y artículos originales con un n = o > a 20. También se incluyeron capítulos de libros escritos por expertos conocidos. La evaluación de la literatura así como la experiencia de los autores permitió el desarrollo del "Consenso para el Tratamiento de las Metástasis Cerebrales". Finalmente los autores esperan que el presente trabajo contribuya a un abordaje multidisciplinario para el manejo de las metástasis cerebrales con recomendaciones simples y prácticas y probablemente estimule nuevos desarrollos en este campo. The advances in oncological therapies has made brain metastases treatment a major factor influencing the survival time and the quality of life patients with cancer. Although there are numerous publications on the issue, there is no consensus about the best treatment strategy. This is probably due to population heterogeneity in terms of functional status, type of neoplasia, control of the systemic disease, and the number and localization of the lesions in the central nervous system. Our objective is to present general recommendations based on a rational analysis in order to guide the practical management of brain metastases. With this purpose, a multidisciplinary team composed by neurosurgeons, neurooncologists, neuropathologist, radiotherapist and neurologists were brought together to conduct a thorough search in english and spanish publications through PubMed (1980-2006). The starting period was set at the beginning of the use of magnetic resonance in medical practice. Reviews and original articles with n=
UTILIDAD CLíNICA DE LA VIDEOCONFERENCIA EN TELEMEDICINA
Coma del Corral MJ,,Diez Sánchez V,Hernandez Martín A,,Gutierrez Ortega MC
Electronic Journal of Biomedicine , 2004,
Abstract:
Consenso para el tratamiento de las metástasis cerebrales
Rabadán,Alejandra T.; Diez,Blanca; Martínez,Ana María; Antico,Julio; Saidón,Patricia; Christiansen,Silvia; Rojas,Galeno;
Revista argentina de neurocirug?-a , 2006,
Abstract: the advances in oncological therapies has made brain metastases treatment a major factor influencing the survival time and the quality of life patients with cancer. although there are numerous publications on the issue, there is no consensus about the best treatment strategy. this is probably due to population heterogeneity in terms of functional status, type of neoplasia, control of the systemic disease, and the number and localization of the lesions in the central nervous system. our objective is to present general recommendations based on a rational analysis in order to guide the practical management of brain metastases. with this purpose, a multidisciplinary team composed by neurosurgeons, neurooncologists, neuropathologist, radiotherapist and neurologists were brought together to conduct a thorough search in english and spanish publications through pubmed (1980-2006). the starting period was set at the beginning of the use of magnetic resonance in medical practice. reviews and original articles with n= or >20 were selected. also, book chapters of renowned authors in the different consulted areas were included. the assessment of the literature, in addition to the experience of the authors allowed the development of the "consensus for the treatment of brain metastases". finally, the authors expect that the present work will contribute to the multidisciplinary approach in the management of brain metastases with simple and practical recommendations, and probably stimulating future developments in this field.
Estación Biológica Senda Darwin: Investigación ecológica de largo plazo en la interfase ciencia-sociedad Senda Darwin Biological Station: Long-term ecological research at the interface between science and society
MARTíN R CARMONA,J. C ARAVENA,MARCELA A BUSTAMANTE-SáNCHEZ,JUAN L CELIS-DIEZ
Revista chilena de historia natural , 2010,
Abstract: La Estación Biológica Senda Darwin (EBSD) constituye un centro de investigación inmerso en el paisaje rural del norte de la Isla de Chiloé (42o S), donde fragmentos del bosque siempreverde original coexisten con praderas de uso ganadero, turberas de Sphagnum, matorrales sucesionales, plantaciones de Eucalyptus y otras formaciones de origen antropogénico. Desde 1994 hemos realizado estudios de largo plazo centrados en algunas especies de plantas (e.g., Pilgerodendron uviferum D. Don) y animales (e.g., Aphrastura spinicauda Gmelin, Dromiciops gliroides [Thomas]) catalogados como amenazados o escasamente conocidos y en ecosistemas nativos de importancia regional y global (e.g., turberas de Sphagnum, bosque Valdiviano y Nordpatagónico). Las investigaciones han considerado las respuestas de las especies y de los ecosistemas frente al cambio antropogénico del paisaje y cambio climático, así como los efectos de diferentes formas de manejo. Este escenario es semejante al de otras regiones de Chile y Latinoamérica lo que da generalidad a nuestros resultados y modelos. En este período, investigadores asociados a la EBSD han producido más de un centenar de publicaciones en revistas nacionales e internacionales y 30 tesis de pre y postgrado. Entendiendo el papel clave de los seres humanos en los procesos ecológicos de la zona rural, la EBSD ha desarrollado un programa de educación ecológica y vinculación del avance científico con la sociedad local y nacional. La integración de la EBSD a la naciente red de Sitios de Estudios Socio-Ecológicos de Largo Plazo en Chile consolidará y fortalecerá la investigación básica y aplicada que realizamos para proyectarla hacia la siguiente década. Senda Darwin Biological Station (SDBS) is a field research center immersed in the rural landscape of northern Chiloé island (42o S), where remnant patches of the original evergreen forests coexist with open pastures, secondary successional shrublands, Sphagnum bogs, Eucalyptus plantations and other anthropogenic cover types, constituting an agricultural frontier similar to other regions in Chile and Latin America. Since 1994, we have conducted long-term research on selected species of plants (e.g., Pilgerodendron uviferum) and animals (e.g., Aphrastura spinicauda, Dromiciops glirioides) that are considered threatened, poorly known or important for their ecological functions in local ecosystems, and on ecosystems of regional and global relevance (e.g., Sphagnum bogs, North Patagonian and Valdivian rain forests). Research has assessed the responses of species and ecosystems to anthropogeni
Lipid disorders in patients of 15 to 64 years old in a policlinic of Rodas municipality. Trastornos lipídicos en pacientes de 15 a 64 a os en un consultorio médico del municipio de Rodas.
Manuel Castillo Frías,Ana Teresa Fernández Vidal,Emiliano Diez Martínez,Iván González Solis
MediSur , 2007,
Abstract: Background: Since long time ago clinic medicine established the inexorable progress or development of the human arteriosclerosis, a disease expressed through complications as coronary and cerebrovascular ischemia and obliterant arteriosclerosis of inferior limbs, among others. Objectives: To determine lipid disorders in patients of 15 to 64 years of age of a policlinic in an urban health area. Methods: A transversal cut and descriptive study that included 263 patients to whom the cold test and the cholesterol and triglyceride exams were applied. Results and Conclusions: The risk factors that were more associated with the type of hyperlipoproteinemia were alcoholic consumption, poor nutrition, sedentary habit and overweight. The 26.9% presented hyperlipoproteinemia diagnoses, the 63, 4% of them are masculine and the 50, 7% belonged to the age group of 45 to 54 years old, the one who predominated. The hyperlipoproteinemia type found with more percentage was that of IIb, followed by IIa type and IV type. The non transmissible diseases more associated were arterial hypertension, diabetes mellitus and angina. Fundamento: Dentro de las enfermedades crónicas no trasmisibles, las de índole vascular encabezan a escala mundial lo registros de morbi-mortalidad de la población adulta. Los trastornos lipídicos aumentan estas afecciones. Objetivo: Determinar la presencia de trastornos lipídicos en pacientes de 15 a 64 a os, del consultorio 3 del área de salud urbana del municipio de Rodas, Cienfuegos. Métodos: Estudio descriptivo y de corte transversal, realizado en un universo constituido por 438 pacientes con edades comprendidas entre los 15 y 64 a os, del que se obtuvo una muestra representativa de 263 pacientes, mediante la aplicación del método estratificado por sexo y edad, tomándose como grupo de edades estratos de 10 a os y por sexo. A todos los pacientes se les realizó la prueba de frío y los exámenes de colesterol y triglicéridos. Resultados y Conclusiones: Los factores de riesgo que más se relacionaron con el tipo de hiperlipoproteinemia fueron la ingestión de bebidas alcohólicas, la alimentación inadecuada, el sedentarismo y el sobrepeso. El 26, 9 % de los pacientes objeto de estudio presentaron diagnóstico de hiperlipoproteinemia, de ellos el 63, 4 % pertenecen al sexo masculino y el 50,7 % al grupo de edad de 45 a 54 a os que fue el que predominó en nuestro trabajo. El tipo de hiperlipoproteinemia que se encontró con mayor porcentaje fue la tipo IIb con un 38 %, seguida de la tipo IIa y la tipo IV con 23, 9 % y 22, 5 % respectivamente. Las enfermedades
Characterization of pedological parameters that influence almond productivity
Fernández,Emilia; Mu?oz,Juan Manuel; Martín,Francisco; Sierra,Manuel; Fernández,Juan; Diez,María; Martínez,Armando; Aguilar,José;
Revista de Ciências Agrárias , 2010,
Abstract: several almond orchards have been studied in south-eastern spain to characterize and evaluate the soils dedicated to the cultivation of different cultivars in order to identify the parameters that most affect yield. the percentage of gravels, high in several of the soils studied, correlated negatively with the clay content and water holding capacity (whc) as did the percentage of caco3 with available potassium. the greatest yield corresponded to soils with higher surface porosity and lower subsurface porosity, enaulic or gefuric related distribution in the surface horizons and porphyric related distribution in the subsurface horizons. both for the fertility capability classification as well as for the agricultural productivity evaluation (fao), the soils with the best characteristics for the crop did not coincide with those in which the greatest yield was found (ferragnès registering the highest yield), due to the flowering period of the rest of the cultivars selected, which was more influenced by the climatic characteristics of the zone, especially temperature.
El consumo de sal Riesgo o necesidad?
Emiliano Nicolás Diez y Martínez de la Cotera,Mikhail Benet Rodríguez,Alain Francisco Morejón Giraldoni,Rubén García Nú?ez
Finlay : Revista de Enfermedades no Transmisibles , 2011,
Abstract: Se realizó una revisión acerca del consumo de sal y sus usos en las diferentes etapas de la historia de la humanidad. Se abordan elementos relacionados con su presencia en el organismo, las funciones fisiológicas esenciales para el mantenimiento homeostático en la vida, así como las complicaciones cuando sus niveles son inferiores a los límites fisiológicos, o superiores a estos. Se analizaron diferentes estudios y sus contradicciones sobre los da os que ocasiona a la salud el consumo de sal. Se precisan los grupos poblacionales sal sensibles (SS) y sal resistentes (SR), pautados por estudios realizados, así como las posibles causas de sus variaciones. Se emiten conclusiones en cuanto a riesgo y beneficio del consumo de sal. Se recomienda intervenir en un equilibrado consumo, tanto para los individuos como para las poblaciones. Salt Intake: Risk or Need? A literary review on salt intake and its uses throughout the different stages in the history of mankind was conducted. It addresses issues related to salt concentrations in the human body, its physiological functions that are essential for homeostatic control, as well as the complications when salt levels are below or over the physiological limits. Different studies were analyzed including the contradictions they all present on the damage that salt intake can cause to human health. Population groups are defined as salt sensitive (SS) and salt resistant (SR) according to study that was conducted as well as to the possible causes for their variations. Conclusions are drawn on the risks and benefits of salt intake. Intervention is recommended for balanced consumption, both for individuals and for populations.
Selección de cepas de Shigella sonnei para el desarrollo de una vacuna efectiva contra la shigellosis
Martínez,Olga M; Riverón,Luis; Alemán,Ainel; Talavera,Arturo; Montano,Isis; Soto,Carmen; Diez,Ranset; Araujo,Leopoldo; Suárez,Magaly;
Vaccimonitor , 2008,
Abstract: a work methodology was developed at finlay institute that contributed to the selection of shigella sonnei strains as possible vaccinal candidates against shigellosis. strains under study , were donated by the provincial centre of hygiene and epidemiology in the city of havana and were characterized using traditional methods. the identification and of the serogroup and serotype was performed by agglutination in slides with commercial antisera. whereas diramic 10, a semi automated equipment was used to study antimicrobial susceptibility. results were obtained four hours after. the presence of virulence plasmid for the growth of shigella spp. in agar soy triptone with congo red at 0.025%, as well as outer membrane protein expression in of sds-page. in addition, animal models mice-lung and the test of sereny were used for virulence and potency tests. results obtained allowed the selection of the strain s. sonnei a-04 as the most adequate for the obtainment of a possible vaccinal candidate.
Tratamiento combinado con radioterapia externa y hormonoterapia en los pacientes con cáncer de próstata localmente avanzado: factores predictivos de toxicidad genitourinaria
Ferrandis,C.; March,J.A.; Martínez,J.M.; Hernández,J.; Diez,N.; Morillo,V.; García,F.; Chuan,P.;
Actas Urológicas Espa?olas , 2011, DOI: 10.4321/S0210-48062011000300005
Abstract: introduction: radiotherapy and androgen deprivation are an established treatment option for locally advanced prostate cancer. we evaluate outcomes in efficacy and toxicity for patients treated with this combined therapy at our institution. methods: a retrospective study of 80 patients with locally advanced prostate cancer treated with radiotherapy combined with neo-adjuvant (2 months) and adjuvant (24 months) androgen deprivation. we studied the clinical variables and side effects. we evaluated treatment outcomes using psa nadir and biochemical failure, and recorded acute and late gastrointestinal and urinary toxicity. we assessed the correlation between clinical variables and urinary toxicity by means of univariate and multivariate analyses (multiple logistic regression). results: the mean patient age was 68 ± 5.81 years; the initial psa was 20.05 ± 16.27 ng/ ml and the mean prostate volume 43.7 ± 27.57 cc. the clinical stage was t3a in 33% and t3b in 66%. the gleason score was <7 in 39%, 7 in 46% and >8 in 15%. the mean follow-up was 44.4 months and biochemical failure was observed in 3 cases. acute urinary toxicity was recorded in 90% of the patients (chronic in 35%) and acute gastrointestinal toxicity in 75% (late in 32%). in a univariate analysis, prostate volume and urinary symptoms were statistically correlated to acute and late urinary toxicity. both prostate volume and urinary symptoms were independently associated with an increase in urinary toxicity in the logistic regression analysis. conclusions: hormone-radiotherapy is a valid option to locally treat advanced prostate cancer with optimal short-term outcomes, although it is not devoid of side effects. prostate volume and urinary symptoms before treatment can predict genitourinary toxicity.
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