oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 64 )

2018 ( 224 )

2017 ( 243 )

2016 ( 233 )

Custom range...

Search Results: 1 - 10 of 58547 matches for " Miguel Suárez Bosa "
All listed articles are free for downloading (OA Articles)
Page 1 /58547
Display every page Item
Empresarios canarios en Latinoamérica. El caso de Cuba
Miguel Suárez Bosa
Anuario Americanista Europeo , 2007,
Abstract: Este artículo analiza la participación de los canarios en la iniciativa empresarial en Cuba, en tanto que población migrante. Se parte de la consideración de que la iniciativa empresarial emprendida por los canarios fue importante para la economía de ese país, particularmente en la industria tabaquera, en la azucarera y en los servicios. Ello, en cierta medida, viene a desmentir el mito alimentado por la historiografía sobre la incapacidad del canario para emprender negocios. El objetivo es, pues, presentar un panorama de la actividad empresarial de los canarios en la isla caribe a desde la segunda mitad del siglo XIX hasta el primer tercio del siglo XX, tomando como referencia alguno de los empresarios o de las empresas más significativas establecidas en la isla.
Evolución de la producción y el comercio mundial de la grana cochinilla, siglos XVI-XIX
Sánchez Silva, Carlos,Suárez Bosa, Miguel
Revista de Indias , 2006,
Abstract: In this article it is analysed the production of cochineal and what were the reasons why it was moved from the Mexican province of Oaxaca (which held the monopoly until 19th century) to Centro America and to the Canaries. This is a study of Comparitve History, where are used results of investigations made in productive areas mentioned above. Direct sources have been used and different documents, such as consular or administrative reports and publications second hand reliable. En este artículo se analiza la producción y el comercio de la grana cochinilla y las causas por las que se trasladó desde la provincia mexicana de Oaxaca (que tuvo el monopolio hasta el siglo XIX a Centroamérica y Canarias). Es un estudio de historia comparada, partiendo de los resultados de investigaciones llevadas a cabo en senda zonas productoras, utilizando las fuentes directas e informes de diversa índole como los consulares y/o administrativos así como las publicaciones de segunda mano más solventes.
Rehabilitación de algunas propiedades químicas de los suelos y del bosque de niebla en veracruz, México con ensambles experimentales de le?osas nativas y casuarina equisetifolia L, Amoen
Suárez Guerrero,Ana Isabel; Equihua,Miguel;
Interciencia , 2009,
Abstract: on the rehabilitation of a severely degraded site formerly occupied by cloud forest, the impact of five experimental tree species assemblages on some soil chemical properties and plant performance was explored. seedlings of ten native cloud forest succession tree species and the exotic species casuarina were combined in five assemblages of different composition and richness. their effect was noticeable on five out of eight soil properties analyzed. the one that included casuarina stood out on height, and had the highest levels of most of the nutrients, particularly nitrogen. more than half of the trees sown remained alive after the initial two years of the experiment (1999 and 2001). assemblages affected individual survival time as well as growth variables. plant cover was most rapid and extensively formed by the native species assemblages; those that included oaks, showed high levels of some nutrients. the richest assemblage displayed intermediate levels in soil and plant variables. the inclusion of the rapid growth species casuarina was validated to enhance nutrient accumulation on degraded soils. the results suggest that initial rehabilitation can be achieved by the assemblage establishment.
Reconstrucción de Parámetros y Variables de Estado para una Clase de Sistemas Caóticos con Aplicación en Codificación y Decodificación de Información
Suárez Casta?ón, Miguel Santiago;
Computación y Sistemas , 2005,
Abstract: in this paper we describe how to use exact state and parametric integral equations re-constructors for the identification of the state variables of dynamic chaotic discrete and continuous non-lineal systems. in both cases, we avoid the use of asymptotic observers and takens theorem. identification and reconstruction of discrete systems is illustrated with lozi's system. the state reconstruction schema for discrete systems was used in the design of an information codification and de-codification mechanism. the re-constructor approach is extended for hyper-chaotic maps. the codification and de-codification schema presents an enhancement that consists on using the observable signal also as porter of the codified information. the developed ideas for discrete systems are translated to the continuous case, by taking iterative integrals in the same case as the delayed outputs were used in the designing of exact re-constructors. the non-observable reconstruction process was done by means of the design of iterative integral equations; identification of the unknown parameters is obtained by solving a linear equation system where the unknowns are formed as lineal combinations of such parameters. all these processes are illustrated with duffing's oscillator and chua's circuit.
Errores en el examen físico del paciente Errors in the physical examination of patient
Birsy Suárez Rivero,Miguel ángel Blanco Aspiazú,Emilio Morales Jiménez,Alujy Suárez Rivero
Revista Cubana de Medicina Militar , 2011,
Abstract: Introducción: el examen físico está dirigido a la obtención de información de valor diagnóstico guiado por el interrogatorio precedente, pero también impacta la calidad de la relación médico-paciente. Objetivo: determinar los errores más frecuentes al examinar al paciente y si existe asociación de estos con la certeza del diagnóstico nosológico. Métodos: se realizó un estudio descriptivo mediante la observación de 75 exámenes efectuados a pacientes por 36 médicos de la especialidad de Medicina Interna, para lo cual se utilizó una guía de observación. Resultados: los errores más frecuentes fueron: no tomar en cuenta las expectativas del paciente al examinar, omisión de aspectos, desorden al examen, mala técnica en la ejecución de maniobras, sugerencia de hallazgos al paciente y no identificar datos semiográficos. Ningún error se asoció a la certeza del diagnóstico. Conclusiones: los errores detectados ponen en evidencia necesidades de aprendizaje en el plano técnico y en cuanto al estilo de examen físico centrado en el paciente. Introduction: the physical examination is aimed to obtain valuable diagnostic information directed by the previous questioning, but also to impact the quality of physician-patient relationship. Objective: to determine the more frequent errors in examination of patient and if there is association of these with certainty of disease diagnosis. Methods: a descriptive study was conducted by means of observation of 75 examinations performed to patients by 36 physicians from the specialty of Internal Medicine, using a observation guide. Results: the more frequent errors were: not to take into account the patient's expectancies at examination, omission of elements, mess at examination, a poor technique in performing the maneuvers, suggestion of findings to patient and not to identify semiographic data. Any error was associated with the certainty of diagnosis. Conclusions: the errors detected demonstrate the needs of learning in the technical plane and as regards the style of physical examination centered in patient.
Relación de la certeza diagnóstica con los errores en estudios complementarios Relation between diagnostic certainty and errors in complementary studies
Birsy Suárez Rivero,Miguel ángel Blanco Aspiazú,Emilio Morales Jiménez,Alujy Suárez Rivero
Revista Cubana de Medicina Militar , 2012,
Abstract: Introducción: con el desarrollo impetuoso de la tecnología, se ha producido una situación en que no pocos médicos y pacientes, han perdido la confianza en el interrogatorio, el examen físico y el razonamiento médico, y sobrevaloran el uso de la tecnología en el diagnóstico. No es raro, tampoco, encontrarse con el caso de que a una peque a anormalidad en un examen complementario, se le ofrezca más valor que al cuadro clínico del paciente. Objetivo: determinar la relación entre los errores en estudios complementarios y la certeza diagnóstica. Métodos: se realizó un estudio descriptivo, basado en la observación de la indicación de estudios complementarios por 36 médicos de la especialidad de Medicina Interna. Resultados: los tres errores más frecuentemente observados en los exámenes complementarios fueron: utilización de rutinas, estudios innecesarios y no informar al enfermo de los resultados. Las diferencias observadas entre los grupos según certeza diagnóstica, no resultaron estadísticamente significativas. Conclusiones: los errores más frecuentes en la utilización de los exámenes complementarios, muestran un mal razonamiento clínico previo a su indicación. Ningún error identificado se asoció de manera significativa a la certeza del diagnóstico. La indicación y evaluación de los estudios complementarios debe hacerse vinculada a la del razonamiento diagnóstico, así se evita la indicación de rutinas y estudios innecesarios. Introduction: with the impetuous development of technology, a situation has arisen in which a considerable number of physicians and patients have lost their confidence in clinical interviews, physical examination and clinical reasoning, and overestimate the use of medical technology for diagnostic purposes. It is not uncommon that a small abnormality found in a complementary test is given more importance than the patient's clinical status. Objective: determine the relation between errors in complementary studies and diagnostic certainty. Methods: a descriptive study was conducted based on the indication of complementary studies by 36 internal medicine specialists. Results: the three most common errors found in complementary examinations were the use of routines, unnecessary studies and not informing results to the patient. The differences found between the groups as to diagnostic certainty were not statistically significant. Conclusions: the most common errors in the use of complementary examinations are evidence of faulty clinical reasoning before their indication. None of the errors identified was significantly associated with diagno
Errores más frecuentes al interrogar y su asociación con la certeza diagnóstica Most common errors and their association to examine the diagnostic accuracy
Birsy Suárez Rivero,Miguel ángel Blanco Aspiazú,Emilio Morales Jiménez,Alujy Suárez Rivero
Revista Cubana de Medicina Militar , 2012,
Abstract: Introducción: la entrevista es un encuentro del facultativo con el enfermo donde se desarrolla la mayor parte del ejercicio asistencial en el ámbito de la salud, tiene diferentes etapas en las cuales se pueden cometer errores. Objetivo: determinar si existe asociación entre los errores al interrogar y la certeza del diagnóstico nosológico. Métodos: se realizó un estudio descriptivo mediante la observación de 75 interrogatorios por 36 médicos de la especialidad de Medicina Interna del Hospital Militar Central "Dr. Carlos J. Finlay" en el periodo de enero-julio del 2006. Se utilizó una guía de observación. Los datos se expresaron en valores absolutos y relativos y se organizaron en tres grupos, según fueran los diagnósticos: correctos, incorrectos y solo el diagnóstico nosológico correcto. La asociación se calculó mediante la prueba de Ji cuadrado con significación estadística para p<0,05. Resultados: los errores más frecuentes se relacionaron con el completamiento de la información, presente en el 44-68 % de las entrevistas, pero sin diferencias estadísticamente significativas entre los grupos de certeza. Conclusiones: no existe asociación entre los errores de completamiento de información y la certeza del diagnóstico nosológico. Introduction: the interview is an encounter of the physician with the patient where it develops most of the care exercise in the health field; it has different stages in which mistakes can be made. Objective: to determine the association between errors in questioning and nosological diagnostic certainty. Methods: a descriptive study was made by observation of 75 interviews conducted by 36 doctors, specialists in internal medicine at the military hospital, from January to July 2006. We used an observation guide. Data are expressed in absolute and relative values and they were organized into three groups, according to the diagnoses which turned to be correct, incorrect, and the single correct nosological diagnosis. The association was calculated using the Chi-square test with p <0.05 statistical significance. Results: we detected 12 types of errors. The most common were related to the completion of the information in 44-68% of the interviews, but no statistically significant differences between groups of certainty were observed. Conclusion: there is no association between completeness of information errors and nosological diagnostic certainty.
Influencia en la certeza diagnóstica de los errores médicos en la discusión diagnóstica Influence of medical errors in diagnostic discussion upon diagnostic certainty
Birsy Suárez Rivero,Miguel ángel Blanco Aspiazú,Emilio Morales Jiménez,Alujy Suárez Rivero
Revista Cubana de Medicina Militar , 2012,
Abstract: Introducción: el diagnóstico es un fin y un medio indispensable para establecer una terapéutica eficaz. Hay quienes lo se alan como la parte más importante del trabajo médico, pero existen dificultades en la forma de ense arlo. Objetivo: establecer la relación entre los errores en la discusión diagnóstica y la certeza diagnóstica. Métodos: se realizó un estudio descriptivo basado en el análisis de 75 discusiones diagnósticas escritas y expuestas por 36 médicos de la especialidad de Medicina Interna del Hospital Militar Central "Dr. Carlos J. Finlay". Cada discusión fue analizada a través de una guía de observación, de forma individual por tres profesores, los cuales discutían lo observado para definir los errores cometidos durante discusión diagnóstica. Resultados: los errores más frecuentes fueron: no abordar la afectación ni el padecer, no pronostica, error diagnóstico etiológico y entidad nosológica errada; los dos últimos con diferencias estadísticamente significativas. Conclusiones: existen limitaciones conceptuales de lo que incluye el diagnóstico como resultados. La mayor parte de los errores no se asocia de forma significativa con la certeza diagnóstica. Introduction: diagnosis is both an end and an indispensable means to establish an effective treatment. To some it is the most important part of medical practice. However, there are difficulties related to the way it should be taught. Objective: determine the relationship between errors in diagnostic discussion and diagnostic certainty. Methods: a descriptive study was conducted based on the analysis of 75 diagnostic discussions written and presented by 36 internal medicine specialists from Dr. Carlos J. Finlay Central Military Hospital. All discussions were analyzed by three professors based on an observation guide. The three professors would then discuss their observations with a view to defining the errors made during diagnostic discussion. Results: the most common errors were the following: not dealing with the disorder or condition, not making a prognosis, wrong etiological diagnosis and wrong nosological entity, the latter two with statistically significant differences. Conclusions: there exist conceptual limitations as to what to include in the diagnosis as results. Most errors are not significantly associated with diagnostic certainty.
Pesos en corazones normales de Venezuela
de Suárez,Claudia; Avilán Rovira,José Miguel;
Gaceta Médica de Caracas , 2004,
Abstract: the heart weight is the most important mass measure as it constitutes the indispensable element to diagnose heart hypertrophy, risk factor for acute cardiovascular events. at the moment we do not have normal values for the national heart weigths and we use data from other ethnic groups as a reference. our goal was to analyse the weight in a sample of 141 macro and microscopical "normal" hearts, from the forensic medical service of the metropolitan area. the estimated linear equation with 33 hearts? weights and the age from people under 16 years old was 27+10.6x. on the 108 hearts from people between 16 and 80 years old, 95 % confidence limits vary from 276.2 g to 294.4 g and a general (both genders) mean weight of 285.7 g. for males the mean heart weight was 294.4 g, 36 g more than the female mean heart weight (258.4 g). this difference reach statistical significance (p< 0.01). adult hearts weights were normally distributed, according to the goodness of fit test (p= 0.83) and the asimetry and kurtosis values. no matter the limitations we had, our results are similar to those found by foreign authors. concepts as critical, physiologic and pathologic hypertrophy are discuss and also factors which influence upon the increase of the heart weight, as obesity, myocardial infiltrations and other changes proper to the old aged.
EL METODO CLINICO Y SU VALOR PARA EL DIAGNOSTICO
Suárez Bergado,Roberto; Blanco Aspiazú,Miguel Angel;
Revista Habanera de Ciencias M??dicas , 2007,
Abstract: the clinical method, which principles are based on the scientific method is the application of this method to the individualized attention of patients. the importance of clinical abilities for the diagnosis such as clinical background and physical exam has been quoted by numerous authors through time. a descriptive study was designed from january to september 2004 to determine the conferred validity of family medicine specialists to the clinical background, the physical exam and the diagnosis tests. these criterions were explored in ten diseases or syndromes in the current clinical practice. at the same time, patient's preferences were established when being attended by these means. an ordinal qualitative scale was utilized as an instrument of evaluation. out of 492 graduated specialists of less than six years gave a 55 % of value to interrogation in their current practice, this number increased to an 85% when added the physical exam. less than 20% of all the questioned doctors consider the diagnostic tests as fundamental to diagnosis. of all the diseases and syndromes that were explored, a 60% of their diagnosis is made by interrogation and physical exam, being of a 70 % in 8 of them. concerning the patients, an 80% of them conferred more importance to interrogation and physical exam.
Page 1 /58547
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.