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Search Results: 1 - 10 of 207539 matches for " Victoria; Díaz Almeida "
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Acné vulgar e inmunidad celular
Addis Abad Machado,Victoria Fundora Guerra,José G. Díaz Almeida,Isabel Molinet Duarte
Revista Cubana de Medicina , 1996,
Abstract: Se realizó un estudio prospectivo de la inmunidad celular de 44 pacientes con acné que acudieron a la Consulta Externa del Hospital "General Calixto García" durante el a o 1992, mediante el test de roseta espontánea y de roseta activa, para aportar nuevos elementos que ayuden a esclarecer uno de los aspectos más controvertidos de la patogenia del acné, el inmunológico. La formación de roseta espontánea estuvo por debajo de los valores normales en el 64 % de los enfermos, en el de roseta activa tuvieron respuesta normal el 55 % de los casos. Hubo disminución significativa de la formación de roseta espontánea y activa en relación con los grados de intensidad del acné. En los pacientes con acné vulgar estudiados, la inmunidad celular parece estar comprometida y relacionada con los grados de intensidad del acné, hecho muy importante que abriría nuevas perspectivas en la inmunoterapia para el tratamiento de esta afección. A prospective study of cell-mediated immunity was carried out in 44 patients presenting with acne who were attended at the out patient service of "Calixto García" Hospital during 1992, by the spontaneous rosetting assay and the active roselting formation test with the aim of providing with new elements for elucidating one of the most controversial aspects of the pathogenesis of acne, i.e. the immunological aspect. The spontaneous rosetting formation was found to be below normal values in 64 % of patients, while the active rosething formation showed a normal response in 55 % of cases. There was a significant reduction in the formation of spontaneous and active rosettes related to the severity degree of acne. In patients presenting with acne vulgaris, the cell-mediated immunity seems to be compromized and related to the degrees of severity of the disease, fact that appears to be very important and may lead to new perspectives for the immunologic therapy of this condition.
Acné vulgar e inmunidad celular
Abad Machado,Addis; Fundora Guerra,Victoria; Díaz Almeida,José G.; Molinet Duarte,Isabel; Manrique,Juan René;
Revista Cubana de Medicina , 1996,
Abstract: a prospective study of cell-mediated immunity was carried out in 44 patients presenting with acne who were attended at the out patient service of "calixto garcía" hospital during 1992, by the spontaneous rosetting assay and the active roselting formation test with the aim of providing with new elements for elucidating one of the most controversial aspects of the pathogenesis of acne, i.e. the immunological aspect. the spontaneous rosetting formation was found to be below normal values in 64 % of patients, while the active rosething formation showed a normal response in 55 % of cases. there was a significant reduction in the formation of spontaneous and active rosettes related to the severity degree of acne. in patients presenting with acne vulgaris, the cell-mediated immunity seems to be compromized and related to the degrees of severity of the disease, fact that appears to be very important and may lead to new perspectives for the immunologic therapy of this condition.
Vivencias e implicación académica en estudiantes universitarios: adaptación y validación de escalas para su evaluación Vivências e envolvimento acadêmico de estudantes universitários: adapta o e vali-da o de escalas para a sua avalia o College students' academic experiences and involvement: assessment scales adaptation and validation
Rubén Abello Riquelme,Alejandro Díaz Mujica,María Victoria Pérez Villalobos,Leandro S Almeida
Estudios Pedagógicos (Valdivia) , 2012,
Abstract: Este artículo describe los procesos preliminares de adaptación y validación de dos instrumentos dise ados para describir Vivencias Académicas (centradas en la satisfacción) y la Implicación Académica (centrada en el compromiso) en estudiantes universitarios. De acuerdo con la literatura científica en el área, las vivencias y la implicación académica se encuentran asociadas con las dificultades relacionadas al abandono de los alumnos. Para este estudio se aplicaron dos cuestionarios a 261 estudiantes pertenecientes a la Universidad de Concepción, Campus Los ángeles, Chile. Ambos instrumentos mostraron niveles adecuados de homogeneidad o consistencia interna en los ítems repartidos para las subescalas de cada cuestionario. Paralelamente, se calcularon las correlaciones entre las dimensiones de ambos cuestionarios, siendo los coeficientes obtenidos adecuados para los constructos evaluados. Estos antecedentes permiten el comienzo de la validación de los cuestionarios en estudio. Descrevem-se os processos preliminares de adapta o e valida o de dois instrumentos voltados para a avalia o das Vivências Acadêmicas (centradas na satisfa o) e da Implica o Acadêmica (centrada no compromisso) de estudantes universitários. Conforme a literatura científica na área, vivências e implica o acadêmica encontram-se associadas às dificuldades relacionadas ao abandono dos alunos. Este estudo envolveu a aplica o dos dois questionários a 261 estudantes da Universidade de Concepción, campos Los Angeles, Chile. Ambos os instrumentos mostram níveis adequados de homogeneidade ou consistência interna dos itens divididos em subescalas, em cada questionário. Paralelamente, calculam-se as correla es entre as dimens es dos questionários, sendo os coeficientes obtidos adequados aos constructos avaliados. Estes antecedentes permitem o início da valida o dos questionários em estudo. This paper presents preliminary findings regarding the adaptation and validation of two instruments designed to measure Academic Experiences (centred on satisfaction) and Academic Involvement in university students. Previous research has shown that academic experience and involvement are strongly correlated with student drop-out rates. For the present study, the two surveys were administered to 261 students at the University of Concepción, Chile, on the Los ángeles campus. Both instruments showed suitable levels of reliability and internal consistency on the subscales. Furthermore, the correlation coefficients obtained when comparing dimensions on each survey were acceptable for the constructs being ev
Vivencias e implicación académica en estudiantes universitarios: adaptación y validación de escalas para su evaluación
Abello Riquelme,Rubén; Díaz Mujica,Alejandro; Pérez Villalobos,María Victoria; Almeida,Leandro S; Lagos Herrera,Irma; González Puentes,Jaime; Strickland,Brandee;
Estudios pedagógicos (Valdivia) , 2012, DOI: 10.4067/S0718-07052012000200001
Abstract: this paper presents preliminary findings regarding the adaptation and validation of two instruments designed to measure academic experiences (centred on satisfaction) and academic involvement in university students. previous research has shown that academic experience and involvement are strongly correlated with student drop-out rates. for the present study, the two surveys were administered to 261 students at the university of concepción, chile, on the los ángeles campus. both instruments showed suitable levels of reliability and internal consistency on the subscales. furthermore, the correlation coefficients obtained when comparing dimensions on each survey were acceptable for the constructs being evaluated. these findings allow for a preliminary validation of the two questionnaires included in the study.
Durabilidad de la respuesta inmune antihepatitis B en trabajadores de la salud peruanos con 6 a?os de vacunados
González Griego,Antonio; Ramírez Albajés,Victoria; Almeida Varela,Ricardo; Zumaeta,Eduardo; Ferrandiz,Jorge; Villanueva,A; Soto,Víctor; Alerm González,Alina; Díaz,René; Antón Lolo,Manuel;
Revista Cubana de Investigaciones Biom??dicas , 2000,
Abstract: on the basis of the importance given by the health world organization and the disease control center to the protection of health workers against viral hepatitis b(hbv), the peruvian institute of social security(presently essalud) instructed in 1993 the vaccination of health personnel at risk in 4 national hospitals by using the cuban vaccine called herberbiovac hb(20 mg, 0,1,and 2 month schedule). the purpose was to evaluate the persistence of antibodies in the immunized workers six years after the immunization program and the possible presence of hb virus infection markers. sera from 144 health workers were studied covering 70.24% of seroprotected subjects in comparison with seroprotected subjects in the initial study. conventional immunoenzymatic methods were used to detect markers in the serum, hbsag and antibodies to hbcag were negative in all the serological samples, an outcome that showed that any of the vaccinated persons had traces of hb virus infection. the anti-hbsag was positive, seroconversion was 100% whereas seroprotection and hyperesponse amounted to 91.6 and 43.7% respectively. the mean lifetime of anti-hbsag is 3 years but it was predicted that the levels of antibodies would reach over 10 ui/l after 15 years of the vaccination schedule completion. subjects aged under 40 years had significantly higher levels of seroprotection and hyperesponse, being females those in the higher response categories. the evaluation of the post-vaccination reinforcement immunological response in seroconverted non-seroprotected cases and the extension of the work with essalud to other hospitals in the country were recommended
Efectividad absoluta y relativa de la vacunación antihepatitis B en ni?os de Quillabamba, Perú, 1997-1999
Ramírez,Victoria; González Griego,Antonio; Almeida Varela,Ricardo; Fernández-Baca Loayza,Delia; Macedo Calderón,Yolanda; González Ramírez,Gisela; Alerm González,Alina; Díaz,René;
Revista Cubana de Investigaciones Biom??dicas , 2000,
Abstract: knowing the importance that the pan-american health organization gives to hepatitis b as a health problem in some regions of south america and bearing in mind the recommendations of the commission in charge of the control of this hepatitis in peru, the ministry of health in this country started a mass vaccination of under one year-old infants in highly and medium endemic areas. this paper sets forth a concurrent study of 115 children immunized with heberbiovac hb (10 μg/dose, at 0, 2 and 4 months) which incorporated the extended immunization program in peru and 77 non-vaccinated children. all of them were serologically analyzed to find out prevalence of infection and of hbv carriers (hbsag and anti-hbcag) and their anti-hbsag was quantified using immunoenzymatic methods of organon teknika. there was no evidence of virus b infection in the children accounting for 100 % effectiveness. the percentages of seroconversion, seroprotection and hyperesponse among the immunized children were 99.1, 98.3 and 42.6 respectively. markers of previous infection were found in 31.1 % of children and 3.9 were hbsag positive. considering the average age at which markers occur and the levels of hbsag, it was thought that a pattern of horizontal transmission predominates, which supports the study of people living in the same place as the infested subject and the assessment of non-evident route of infection. on the basis of the impact of vaccination, it was recommended to immunize all children in need of, even if they are not included in the age range set for the extended immunization program as well as to people living with these children if viral spread is detected
Sexualidad, cuerpo y duelo: experiencia clínica con mujeres diagnosticadas con cáncer ginecológico o de mama
Victoria Eugenia Díaz Facio Lince
Pensamiento Psicológico , 2010,
Abstract: El diagnóstico de un cáncer de mama o ginecológico implica para las pacientes la confrontación con las consecuencias orgánicas y psicológicas, propias de una enfermedad que afecta a partes del cuerpo llenas de significaciones subjetivas y culturales. Con base en la formalización de 15 a os de experiencia, clínica con pacientes que consultan por esta enfermedad, se propone en este artículo una reflexión, enmarcada en la Psicooncología, acerca de los efectos psíquicos que estos cánceres generan en las pacientes. Se hace énfasis en los conceptos de sexualidad, cuerpo y duelo, y con base en ellos, se propone que estos cánceres y sus tratamientos producen múltiples pérdidas, las cuales pueden generar procesos que favorecen la reconstrucción afectiva y la resignificación de la vida. En algunos casos, las pacientes se fijan en el dolor como forma de no renunciar a lo perdido.
Aspectos sociolingüísticos de un cambio gramatical: la expresión de futuro
Almeida,Manuel; Díaz,Marina;
Estudios filológicos , 1998, DOI: 10.4067/S0071-17131998003300001
Abstract: in our research, we have analysed the social and linguistic insertion of a change taking place in the city of las palmas de gran canaria (canary islands): the advance of the use of the future form -ré (ma?ana iré a la playa "tomorrow i?ll go to the beach") against other forms of the present (ma?ana voy a la playa "tomorrow i?m going to go to the beach"), wich had been more common in the city in former decades, and of periphrasis (ma?ana voy a ir a la playa "tomorrow i?m going to go to the beach"). the three expressions of future time do not represent, however, different ways of saying the same thing (in the labovian sense), but rather a different means (in the pragmatic sense) of locating future facts.
Aspectos sociolingüísticos de un cambio gramatical: la expresión de futuro Sociolinguistic aspects of a grammatical change: the expression of future
Manuel Almeida,Marina Díaz
Estudios filológicos , 1998,
Abstract: En nuestra investigación estudiamos un cambio que se está produciendo en el nivel morfosintáctico de Las Palmas de Gran Canaria (Islas Canarias): el avance de la forma futura en -ré (Ma ana iré a la playa) frente a otras formas de expresar la futuridad, el presente de indicativo (Ma ana voy a la playa), que fue más frecuente en épocas pasadas, y la perífrasis (Ma ana voy a ir a la playa). No se trata de selección de una de entre varias formas de "decir lo mismo", sino de tres modos diferentes (en sentido pragmático) que tiene el hablante de presentar los hechos futuros. In our research, we have analysed the social and linguistic insertion of a change taking place in the city of Las Palmas de Gran Canaria (Canary Islands): the advance of the use of the future form -ré (Ma ana iré a la playa "Tomorrow I’ll go to the beach") against other forms of the present (Ma ana voy a la playa "Tomorrow I’m going to go to the beach"), wich had been more common in the city in former decades, and of periphrasis (Ma ana voy a ir a la playa "Tomorrow I’m going to go to the beach"). The three expressions of future time do not represent, however, different ways of saying the same thing (in the Labovian sense), but rather a different means (in the pragmatic sense) of locating future facts.
Shoot Biomass Assessments of the Marine Phanerogam Zostera marina for Two Methods of Data Gathering  [PDF]
Elena Solana-Arellano, Héctor Echavarría-Heras, Victoria Díaz-Casta?eda, Olga Flores-Uzeta
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.311186
Abstract: In order to compare to data gathering methods for shoot biomass assessments of Zostera marina, we compare two allometric models each one representing a data gathering method, one at leaf level and the other in aggregated form. The first allometric model presented leaf dry weight in terms of leaf length as . The second model is expressed as a several-variables version of the allometric Equation (1) dry weight of each leaf in a given shoot can be considered to be a random variable therefore shoot biomass ws can be represented in the form Both models presented similar determination coefficients values of 0.85 and 0.87 respectively. We found no significant differences between parameters α (p = 0.11) and β (p = 0.50) fitted for each model, showing that both equations conduced to the same result. Moreover, both fitted models presented high Concordance Correlation Coefficients of reproducibility () (0.92 and 0.91). We concluded that for shoot weight assessments if larger samples and faster data processing is required then should model of Equation (2) be used. On the other hand, we proposed model of Equation (1) if data at leaf level is required for other endeavors.
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