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Search Results: 1 - 10 of 6645 matches for " MAGDALENA; VALDIVIA ALVAREZ "
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Estudio taxométrico de especies del género Mycobacterium aisladas en Cuba
FERRA SALAZAR,CARIDAD; MEDEROS CUERVO,LILIAN M; FONSECA,MAGDALENA; VALDIVIA ALVAREZ,JOSE A;
Revista Cubana de Medicina Tropical , 1996,
Abstract: 40 straing of the mycobacterium genus corresponding to 12 species, which were subjected to 62 microbiological and biochemical tests, were studied. each one was considered as a character. as a result of the similitude coefficient and their grouping, 9 phenomes represented by: phenome i (mycobacterium fortitum), phenome ii (mai complex), phenome iii (mycobacterium phlei), phenome iv (mycobacterium triviale), phenome v (mycobacterium smegmatis), phenome vi (mycobacterium gordonae), phenome vii (mycobacterium szulgai), phenome viii (mai complex), and phenome ix (mycobacterium scrofulaceum), were obtained. the strain identification work was consistent with grouping from the phenotypic point of view.
Estudio taxométrico de especies del género Mycobacterium aisladas en Cuba
CARIDAD FERRA SALAZAR,LILIAN M MEDEROS CUERVO,MAGDALENA FONSECA,JOSE A VALDIVIA ALVAREZ
Revista Cubana de Medicina Tropical , 1996,
Abstract: Se estudiaron 40 cepas del género Mycobacterium correspondientes a 12 especies las cuales fueron sometidas a 62 pruebas microbiológicas y bioquímicas, consideradas cada una como un carácter. Como resultado de los coeficientes de similitud y su agrupación se obtuvieron 9 fenones, representados por: Fenón I (Mycobacteriu fortuitum), Fenón II (Complejo MAI), Fenón III (Mycobacterium phlei), Fenón IV (Mycobacterium triviale), Fenón V (Mycobacterium smegmatis), Fenón VI (Mycobacterium gordonae), Fenón VII (Mycobacterium szulgai), Fenón VIII (Complejo MAI) y Fenón IX (Mycobacterium scrofulaceum). El trabajo de identificación de las cepas fue coherente con la agrupación desde el punto de vista fenético. 40 straing of the Mycobacterium genus corresponding to 12 species, which were subjected to 62 microbiological and biochemical tests, were studied. Each one was considered as a character. As a result of the similitude coefficient and their grouping, 9 phenomes represented by: Phenome I (Mycobacterium fortitum), Phenome II (MAI Complex), Phenome III (Mycobacterium phlei), Phenome IV (Mycobacterium triviale), Phenome V (Mycobacterium smegmatis), Phenome VI (Mycobacterium gordonae), Phenome VII (Mycobacterium szulgai), Phenome VIII (MAI Complex), and Phenome IX (Mycobacterium scrofulaceum), were obtained. The strain identification work was consistent with grouping from the phenotypic point of view.
Discinesia abdominal paroxística: Presentación de un caso
Valdivia Alvarez,Ileana;
Revista Cubana de Pediatr?-a , 2005,
Abstract: se reporta un caso de trastorno paroxístico del movimiento, localizado en la pared abdominal. es involuntario y tiene las características de una discinesia abdominal. la paciente tiene antecedentes de menarquía precoz, sin desarrollo de caracteres sexuales secundarios. respondió muy favorablemente al tratamiento con carbamazepina. se revisa la literatura sobre el tema.
Discinesia abdominal paroxística: Presentación de un caso Paroxysmal abdominal dyscinesia: A case report
Ileana Valdivia Alvarez
Revista Cubana de Pediatr?-a , 2005,
Abstract: Se reporta un caso de trastorno paroxístico del movimiento, localizado en la pared abdominal. Es involuntario y tiene las características de una discinesia abdominal. La paciente tiene antecedentes de menarquía precoz, sin desarrollo de caracteres sexuales secundarios. Respondió muy favorablemente al tratamiento con carbamazepina. Se revisa la literatura sobre el tema.
Alternativas terapéuticas en la epilepsia refractaria del ni?o
Valdivia Alvarez,Ileana; Abadal Borge,Gisela;
Revista Cubana de Pediatr?-a , 2006,
Abstract: se realiza una valoración de los métodos actuales de tratamiento de la epilepsia refractaria en ni?os. se revisa la alternativa quirúrgica de la epilepsia en pediatría, las indicaciones según tipo de epilepsia, las principales técnicas empleadas según etiología y las complicaciones. se revisa la dieta cetogénica como método reemergente en el tratamiento de la refractariedad, sus principales ventajas, bases fisiopatológicas y complicaciones. realizamos una valoración del estado actual de estos procedimientos en nuestro país.
Alternativas terapéuticas en la epilepsia refractaria del ni o Therapeutic alternatives in childhood refractory epilepsy
Ileana Valdivia Alvarez,Gisela Abadal Borge
Revista Cubana de Pediatr?-a , 2006,
Abstract: Se realiza una valoración de los métodos actuales de tratamiento de la epilepsia refractaria en ni os. Se revisa la alternativa quirúrgica de la epilepsia en pediatría, las indicaciones según tipo de epilepsia, las principales técnicas empleadas según etiología y las complicaciones. Se revisa la dieta cetogénica como método reemergente en el tratamiento de la refractariedad, sus principales ventajas, bases fisiopatológicas y complicaciones. Realizamos una valoración del estado actual de estos procedimientos en nuestro país.
Evidence of UVB differential response in Sophora microphylla from shady and sunny places
Hess,Susan; Alvarez,José Luis; Iturra,Griselda; Romero,Magdalena;
Boletín de la Sociedad Chilena de Química , 2002, DOI: 10.4067/S0366-16442002000400022
Abstract: the effect of the supplemental uvb radiation in forest species was studied in sophora microphylla, a native tree that grow at low latitudes in the central-south of chile and important by their association with soil bacteria and mycorhizal fungi. seeds of sun and shade variety growing at different light intensities were collected. using indoor supplemental uvb radiation germination and seedling grow were examined. as response to uvb radiation, seeds and young emerging seedling from high irradiance habitat (ppf ± 2200 m molm-2s-1), sun variety plants show more tolerance than plants from habitat with less irradiance (ppf ± 1400 m molm-2s-1), shade variety plants. germination and growing of sunny plants was faster than shady plants. photosynthetic pigments (chlorophyll a and chlorophyll b) content increased in shady plants and was almost invariable for sunny plants. total protein content decreased in both cases. biosynthesis of flavonoids and epicuticular waxes was induced by uvb, especially in sun variety seedling. uvb screening total flavonoids were determined with uv spectroscopy. epicuticular wax analysis was performed with ft ir technique. all this results suggest that an increment of uvb radiation is more harmful for plants accustomed to low radiation intensity, than for those growing at high light intensity.
Evidence of UVB differential response in Sophora microphylla from shady and sunny places
Susan Hess,José Luis Alvarez,Griselda Iturra,Magdalena Romero
Boletín de la Sociedad Chilena de Química , 2002,
Abstract: The effect of the supplemental UVB radiation in forest species was studied in Sophora microphylla, a native tree that grow at low latitudes in the Central-South of Chile and important by their association with soil bacteria and mycorhizal fungi. Seeds of sun and shade variety growing at different light intensities were collected. Using indoor supplemental UVB radiation germination and seedling grow were examined. As response to UVB radiation, seeds and young emerging seedling from high irradiance habitat (PPF ± 2200 m molm-2s-1), sun variety plants show more tolerance than plants from habitat with less irradiance (PPF ± 1400 m molm-2s-1), shade variety plants. Germination and growing of sunny plants was faster than shady plants. Photosynthetic pigments (chlorophyll a and chlorophyll b) content increased in shady plants and was almost invariable for sunny plants. Total protein content decreased in both cases. Biosynthesis of flavonoids and epicuticular waxes was induced by UVB, especially in sun variety seedling. UVB screening total flavonoids were determined with UV spectroscopy. Epicuticular wax analysis was performed with FT IR technique. All this results suggest that an increment of UVB radiation is more harmful for plants accustomed to low radiation intensity, than for those growing at high light intensity. Se estudio en laboratorio el efecto de radiación UBV adicional en Sophora microphylla, una especie forestal nativa de bajas latitudes en el centro-sur de Chile importante por su asociación con bacterias y hongos micorricicos del suelo. Semillas de Sophora en variedad sol y sombra (± 2200 y ± 1400 m molm-2s-1 respectivamente) y las plantulas emergidas fueron irradiadas durante dos meses con un exceso de UVB (9.6 m W cm-2 x 5 min.) y 120 m molm-2s-1 PPF diarios, con lamparas que simulan el espectro solar con un incremento de la radiacion UVB. Semillas de variedad sol cultivadas en exceso de UVB germinaron mas rápidamente que su control y que las de variedad sombra, siendo su crecimiento y biomasa también mayor. La radiación UVB indujo reducción en el crecimiento y biomasa en ambas variedades, aumento en la síntesis de pigmentos fotosinteticos principalmente en variedad sol y aumento en la síntesis de flavonoides y ceras epicuticulares también en variedad sol. Esta mayor resistencia a eventos esporádicos de UVB en exceso sugieren que un incremento de la radiación UVB podría afectar mayormente a plantas acostumbradas a intensidades de radiación bajas (variedad sombra) que en aquellas que naturalmente crecen bajo altas intensidades de luz (variedad so
Detection of cytomegalovirus in urine of HIV-infected patients by DNA-DNA hybridization comparison with virus isolation, immunofluorescence and immunoperoxidase
Valdivia, Angel;Marrero, Miguel;Alvarez, Maritza;Mune, Mayra;Valdes, Odalys;Roges, German;
Memórias do Instituto Oswaldo Cruz , 1992, DOI: 10.1590/S0074-02761992000100016
Abstract: immunofluorescence and immunoperoxidase test directed against early viral antigens, and dna-dna hybridization were compared with viral isolation for their abilities to detect cytomegalovirus (cvm) in the urine of 89 hiv infected patients. from the 100 urine samples collected, 70 were found positive by at least one method. considering viral isolation as the "gold standard" technique, immunofluorescence and immunoperoxidase had a sensitivity of 92.3% and88% respectively, with a specificity in both cases of 95%. dna-dna hybridization showed a sensitivity of 90% but with lower (60%) specificity. all of the three assays were effective in detecting cvm from urine and the technical advantage of each is discussed.
Deteccion de citomegalovirus mediante la tecnica de inmunoperoxidasa y aislamiento viral
Alvarez, Maritza;Marrero, Miguel;Valdivia, Angel;Garcia, Serafina;Valdes, Odalys;Morier, Luis;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1991, DOI: 10.1590/S0036-46651991000300002
Abstract: an immunoperoxidase assay was applied to detect early antigens of cytomegalovirus (cmv) in 150 urine samples from immunocompromised patients, using the commercial available monoclonal antibody against cmv el3. the detection of early antigen by ip (ipcmv) is compared to the conventional cell culture isolation regarding specificity and sensitivity in order to evaluate is usefulness in the diagnostic of cmv infections. the ipcmv showed a sensitivity of 89.8% and a specificity of 91.3% when compared to the isolation method. the great advantage of the ipcmv is based on the shorter time results are achieved, since 48-72 hs can be enough to provide evidence of cmv infection, while in the isolation technique cytopatho-genic effect was present around 14 days after sample inoculation.
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