oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

4 ( 1 )

2018 ( 5 )

2017 ( 740 )

2016 ( 1168 )

自定义范围…

匹配条件: “Eduardo Peón Avés” ,找到相关结果约490190条。
列表显示的所有文章,均可免费获取
第1页/共490190条
每页显示
Study and Characterization of Expansive Cement Estudio y caracterización de cementos expansivos
Hugo Guerra Menéndez,Eduardo Peón Avés,Julio E. Lanza Rodríguez
Revista Cubana de Ingeniería , 2011, DOI: 10.1234/rci.v2i3.58
Abstract: The objective of this study is to characterize commercial expansive cement for subsequent development of national formulation, with consequent economic effect and independence of the international market. On the other hand the results contribute to the development of scientific and technological potential. Expansive cement is a product that enables non-explosive demolition, rock and concrete demolition. To characterize the composition of these products, techniques used infrared spectroscopy with Fourier Transforms and Scanning Electron Microscopy. El objetivo del trabajo consiste en caracterizar un cemento expansivo comercial, para el posterior desarrollo de una formulación nacional, con el consecuente efecto económico y de independencia del mercado internacional. Por otra parte, los resultados contribuyen al desarrollo del potencial científicotecnológico. El cemento expansivo es un producto demoledor no explosivo que permite demoler rocas y hormigones. Para caracterizar la composición de estos productos, se emplean las técnicas de espectroscopia infrarroja con transformada de Fourier y microscopía electrónica de barrido. Se determina que estos cementos están compuestos por óxidos, silicatos, sulfato, ferritoaluminato y aluminato de calcio.
Comparative study of hydroxyapatite coatings obtained by Sol-Gel and electrophoresis on titanium sheets
Peón Avés, Eduardo;Sader, Marcia Soares;Jer?nimo, Fabíola de A. Rodrigues;Sena, Lídia ágata de;Galván Sierra, Juan C.;Soares, Gloria D. de Almeida;
Matéria (Rio de Janeiro) , 2007, DOI: 10.1590/S1517-70762007000100020
Abstract: a comparative study of two coating methods on titanium (ti) substrates, sol-gel and electrophoresis processes, was performed. before coating, two different surface treatments were employed. the hydroxyapatite (ha) powder were characterized by infrared spectroscopy (ftir) and x-ray diffraction (xrd) while coated samples were examined by using scanning electron microscopy (sem) with energy dispersive spectroscopy (eds). both techniques seem to be suitable to coat ti. a previous surface treatment on metallic titanium seems to be fundamental to enhance coat uniformity and adhesion that was estimated by the adhesive tape test. the decrease in calcination temperature did not affect the coating adhesion.
Comprensión lectora y habilidades matemáticas de estudiantes de educación básica en México: 2000-2005
Backhoff Escudero, Eduardo;Sánchez Moguel, Andrés;Peón Zapata, Margarita;Andrade Mu?oz, Edgar;
Revista electrónica de investigación educativa , 2010,
Abstract: after the establishment of the national institute for educational evaluation (inee) in 2002, society demanded to know whether the educational system had progressed during the last five years. in response, the inee used the national standards tests for mathematics and reading comprehension, applied by the department of evaluation of the secretariat of public education (sep) in 2000, and again in 2005. the results showed that sixth graders in private, public, rural schools had made a significant advance in mathematics and reading comprehension. indigenous education had also advanced considerably in the latter subject. among junior high schools, only those of the general category showed significant improvement on both tests. regarding gender, women scored higher than men in reading comprehension, as contrasted with math. in terms of age, it was found that students of an age normal for their scholastic level performed better than those older. the explanations found in the results highlight the differences between the learning opportunities and cultural capital of the families of the different strata and modalities.
Uso de midodrín y congelación de semen en el tratamiento de las alteraciones del transporte espermático.: Caso clínico
Sánchez G,Raúl; Pe?a S,Patricio; Villagrán V,Eduardo;
Revista médica de Chile , 2000, DOI: 10.4067/S0034-98872000000100013
Abstract: retrograde ejaculation severely compromises male fertility. the use of sympathicomimetics for the treatment of this condition has poor results, except in patients with partial retrograde ejaculation, whose semen has a higher spermatozoa concentration. the semen of two patients with partial retrograde ejaculation was collected and frozen after the injection of a sympathicomimetic (midodrine). the frozen/thawed samples were mixed with fresh semen recently ejaculated to obtain a minimal number of motile spermatozoa, and used for intrauterine insemination (> de 1 x 106 motile spermatozoa/ml). in both cases, pregnancies that developed satisfactorily, were obtained. (rev méd chile 2000; 128: 93-97)
Uso de midodrín y congelación de semen en el tratamiento de las alteraciones del transporte espermático.: Caso clínico Use of Midodrine and frozen/thawed semen to treat semen transport disturbances.: Report of two cases
Raúl Sánchez G,Patricio Pe?a S,Eduardo Villagrán V
Revista médica de Chile , 2000,
Abstract: Retrograde ejaculation severely compromises male fertility. The use of sympathicomimetics for the treatment of this condition has poor results, except in patients with partial retrograde ejaculation, whose semen has a higher spermatozoa concentration. The semen of two patients with partial retrograde ejaculation was collected and frozen after the injection of a sympathicomimetic (Midodrine). The frozen/thawed samples were mixed with fresh semen recently ejaculated to obtain a minimal number of motile spermatozoa, and used for intrauterine insemination (> de 1 x 106 motile spermatozoa/ml). In both cases, pregnancies that developed satisfactorily, were obtained. (Rev Méd Chile 2000; 128: 93-97)
Fundamentación Científica de la Psiquiatría Cubana Actual
Pe?a Galbán,Liuba Y; González Hidalgo,Tomás; Mena Fernández,Magalys; Adán Mena,Eduardo R;
Humanidades M??dicas , 2007,
Abstract: a conceptual and methodological analysis of psychiatry as a science is made, taking the cuban psychiatrists' criteria as a starting point, referring to it as a branch of the medical sciences, in which the object of study is the mental illness or the process health-mental illness, being its actions the diagnosis, treatment, ethiology and pathogenesis, rehabilitation and prevention, as well as its epidemiological study that is related to the social and interdisciplinary levels. starting with redirecting psychiatry towards the community, a reflection is made of the meaning and implications of this science. it is documented the application of the community mental health attention model that is applied through the community centers of mental health, which constitute the cornerstone of the cuban model of community attention. thus, community psychiatry represents the new paradigm of current cuban psychiatry. it is recognized that the philosophical foundation that sustains current cuban psychiatry is the marxist-leninist theory
Fundamentación Científica de la Psiquiatría Cubana Actual Current Cuban Psychiatry: Its scientific foundation
Liuba Y Pe?a Galbán,Tomás González Hidalgo,Magalys Mena Fernández,Eduardo R Adán Mena
Humanidades M??dicas , 2007,
Abstract: Se realiza un análisis metodológico conceptual de la Psiquiatría como ciencia partiendo de los criterios de los psiquiatras cubanos, coincidiendo en que es una rama de las Ciencias Médicas, en la cual el objeto de estudio es la enfermedad mental o el proceso salud enfermedad mental y sus acciones es el diagnóstico, tratamiento, etiopatogenia, rehabilitación y prevención de las mismas, así como su estudio epidemiológico y que incluye el carácter social e interdisciplinario. A partir de la reorientación de la Psiquiatría hacia la comunidad se hace una reflexión del significado e implicaciones de la misma. Se argumenta como en Cuba se aplica el Modelo de la Atención Comunitaria de Salud Mental a través de los Centros comunitarios de Salud Mental que constituyen la piedra angular del modelo cubano de atención comunitaria, con los que constituye la Psiquiatría comunitaria el nuevo paradigma de la Psiquiatría cubana actual. Se reconoce que el fundamento filosófico que sustenta a la Psiquiatría cubana actual es la teoría Marxista Leninista A conceptual and methodological analysis of Psychiatry as a science is made, taking the Cuban psychiatrists' criteria as a starting point, referring to it as a branch of the Medical Sciences, in which the object of study is the mental illness or the process health-mental illness, being its actions the diagnosis, treatment, ethiology and pathogenesis, rehabilitation and prevention, as well as its epidemiological study that is related to the social and interdisciplinary levels. Starting with redirecting Psychiatry towards the community, a reflection is made of the meaning and implications of this science. It is documented the application of the Community Mental Health Attention Model that is applied through the community Centers of Mental Health, which constitute the cornerstone of the Cuban model of community attention. Thus, community Psychiatry represents the new paradigm of current Cuban Psychiatry. It is recognized that the philosophical foundation that sustains current Cuban Psychiatry is the Marxist-Leninist theory
Endometrio con reacción decidual idiopática en una mujer postmenopáusica: evaluación inmunocitoquímica de receptores de estrógeno, de progesterona y de su proteína transportadora (CBG)
Vasconcellos C,Adriana; Villagrán V,Eduardo; Pe?a,Patricio; Miska,Werner; Sánchez G,Raúl;
Revista médica de Chile , 2002, DOI: 10.4067/S0034-98872002000400010
Abstract: endometrial decidual reaction in postmenopausal women without an evident exogenous or endogenous progesterone stimulus, is uncommon. the morphological findings are decidual transformation of the endometrial stroma, necrosis, cellular pleomorphism and in some cases hyperplastic glands that exhibit focal atypia raising the possibility of malignancy. we report the case of a 55 years old woman with an idiopathic endometrial decidual reaction. in this woman, immunocytochemistry of endometrial tissue demonstrated the absence of cytoplasmatic and nuclear estrogen receptors. staining of nuclear progesterone receptors and cytoplasmatic corticoid binding globulin, exceeded the immunoreactivity observed in any period of the menstrual cycle (rev méd chile 2002; 130: 425-429)
Propuesta de modelo para la prescripción de medicamentos controlados por tarjeta
Sansó Soberats,Félix José; Vergara Fabián,Eduardo; Pérez Pe?a,Julián; Hernández Pérez,Aidelís;
Revista Cubana de Medicina General Integral , 2000,
Abstract: the delivery of drugs to patients (mainly for the treatment of non-communicable chronic diseases) is among the aspects included in the national drug program. to register a control card in the pharmacy, the prescriber issues a certificate with the necessary data required by the program. at present it is used the form 53-63, which was originally utilized for medical certificates. in order to design a form that adapts to the current requirements for prescription, we studied the national drug program (1998), the program for the rational use of drugs (1999) and other documents related to drug control. a proposal was made that besides meeting the needs of information of the national drug program strictly, is designed in such a way that only requires half of the paper that was used up to now in the medical certificate. approximately 1 500 000 patients have been prescribed this year some of the drugs sold under the control card system. the use of the proposed form just on account of paper will cause a saving of usd 3 300 in the first year, usd 16 500 in the fifth year and usd 33 000 in the tenth year. in addition to standardize the information that is exchanged in connection with this national program, the use of this form makes easy the scientific research related to the prescription of these drugs
Propuesta de modelo para la prescripción de medicamentos controlados por tarjeta
Félix José Sansó Soberats,Eduardo Vergara Fabián,Julián Pérez Pe?a,Aidelís Hernández Pérez
Revista Cubana de Medicina General Integral , 2000,
Abstract: Entre los aspectos que contempla el Programa Nacional de Medicamentos, se establece la entrega de medicamentos a los pacientes (sobre todo para tratamiento de enfermedades crónicas no transmisibles) mediante una tarjeta control. Para abrir una inscripción de tarjeta control en la farmacia, el prescriptor expide un certificado con los datos que exige el programa; para ello se utiliza hoy, el modelo 53-63, originalmente concebido para la expedición de certificados médicos. Con vistas a dise ar un modelo que se ajustara a los requerimientos actuales para la prescripción, estudiamos el Programa Nacional de Medicamentos (1998), el Programa para el Uso Racional de Medicamentos (1999) y otros documentos relacionados con el control de los medicamentos. Se elaboró una propuesta de modelo que además de responder estrictamente a las necesidades de información del Programa Nacional de Medicamentos, está dise ada de forma tal que por su tama o, solo requiere la mitad del papel que se utiliza en el modelo de certificado médico usado hasta ahora para este fin. Existen aproximadamente 1 500 000 pacientes a los cuales, este a o, se les ha prescrito algún medicamento de los que se expenden por el sistema de tarjeta control. De utilizar el modelo propuesto, solo por concepto de papel, en 1 a o el ahorro sería de 3 300 USD, a los 5 a os de 16 500 USD, y a los 10 a os se ahorrarían unos 33 000 USD. Además de uniformar la información que se intercambia en relación con este programa nacional, facilita la investigación científica relacionada con la prescripción de estos medicamentos The delivery of drugs to patients (mainly for the treatment of non-communicable chronic diseases) is among the aspects included in the National Drug Program. To register a control card in the pharmacy, the prescriber issues a certificate with the necessary data required by the program. At present it is used the form 53-63, which was originally utilized for medical certificates. In order to design a form that adapts to the current requirements for prescription, we studied the National Drug Program (1998), the Program for the Rational Use of Drugs (1999) and other documents related to drug control. A proposal was made that besides meeting the needs of information of the National Drug Program strictly, is designed in such a way that only requires half of the paper that was used up to now in the medical certificate. Approximately 1 500 000 patients have been prescribed this year some of the drugs sold under the control card system. The use of the proposed form just on account of paper will cause a savi
第1页/共490190条
每页显示


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