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Search Results: 1 - 10 of 389982 matches for " Julio César Almanza-Pérez "
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Hypoglycemic Activity of Aqueous Extracts from Catharanthus roseus
Elisa Vega-ávila,José Luis Cano-Velasco,Francisco J. Alarcón-Aguilar,María del Carmen Fajardo Ortíz,Julio César Almanza-Pérez,Rubén Román-Ramos
Evidence-Based Complementary and Alternative Medicine , 2012, DOI: 10.1155/2012/934258
Abstract: Introduction. Catharanthus roseus (L.) is used in some countries to treat diabetes. The aim of this study was to evaluate the hypoglycemic activity of extracts from the flower, leaf, stem, and root in normal and alloxan-induced diabetic mice. Methods. Roots, leaves, flowers, and stems were separated to obtain organic and aqueous extracts. The blood glucose lowering activity of these extracts was determinate in healthy and alloxan-induced (75 mg/Kg) diabetic mice, after intraperitoneal administration (250 mg/Kg body weight). Blood samples were obtained and blood glucose levels were analyzed employing a glucometer. The data were statistically compared by ANOVA. The most active extract was fractioned. Phytochemical screen and chromatographic studies were also done. Results. The aqueous extracts from C. roseus reduced the blood glucose of both healthy and diabetic mice. The aqueous stem extract (250 mg/Kg) and its alkaloid-free fraction (300 mg/Kg) significantly () reduced blood glucose in diabetic mice by 52.90 and 51.21%. Their hypoglycemic activity was comparable to tolbutamide (58.1%, ). Conclusions. The best hypoglycemic activity was presented for the aqueous extracts and by alkaloid-free stem aqueous fraction. This fraction is formed by three polyphenols compounds.
Taller de estudiantes. Santiago de Cuba: Ciudad Segura
Pérez Velázquez,Julio César;
Arquitectura y Urbanismo , 2012,
Abstract: in this paper, the results of the students’ workshop “santiago de cuba: a safe city” (sc+sc) are presented at the vii international meeting city image and memory held on may 2011. it aimed at searching for alternatives to increase the security of human settlement, applying the alternatives to two vulnerable sectors of the city of santiago de cuba. the workshop was coordinated by arch. julio cesar pérez velázquez with the collaboration of the professors: zoila ba?os, grisel cabezas, luís enrique bello, julio cesar pérez, and also the special participation of arch. josé antonio choy. this paper shows the motivations and details of the workshop and the students′ proposals, emphasizing the need to go over these topics for the new generation of architects.
Servicio web inteligente para la clasificación de imágenes digitales utilizando conjuntos aproximados
Caicedo Caicedo,Julio César; Pérez Castillo,José Nelson;
Ingeniería e Investigación , 2010,
Abstract: integrating recent developments in service-orientated computing, web technologies and computational intelligence has facilitated the development of applications for solving complex problems in several fields of scientific and technological research. rough sets theory provides a solid theoretical background within the computational intelligence (ci) field for the qualitative reasoning re-quired for analysing datasets loaded with uncertainties due to the vagueness and lack of precision associated with them. this paper describes the development of an intelligent web service to process digital imagery, demonstrating the benefits of rough sets theory in dealing with the flexible supervised classification of the pixels associated with them.
Servicio web inteligente para la clasificación de imágenes digitales utilizando conjuntos aproximados An intelligent web service for classifying digital imagery by using rough sets
Caicedo Caicedo Julio César,Pérez Castillo José Nelson
Ingeniería e Investigación , 2010,
Abstract: La integración de los avances en computación orientada a servicios, con aquellos alcanzados por la tecnología de la web y la inteligencia computacional, facilita el desarrollo de aplicaciones complejas para la solución de problemas de manera transversa en los diversos ámbitos de la investigación científica y tecnológica. Desde el campo de la inteligencia computacional la teoría de los conjuntos aproximados aporta un sólido fundamento teórico al razonamiento cualitativo exigido por el análisis de datos, caracterizados por la incertidumbre generada por la vaguedad e imprecisión asociada a éstos. El presente trabajo describe el desarrollo de un servicio web inteligente aplicado al procesamiento digital de imágenes, ilustrando las bondades de los conjuntos aproximados, para abordar de modo flexible y supervisado la clasificación de los pixeles asociados a ellas. Integrating recent developments in service-orientated computing, Web technologies and computational intelligence has facilitated the development of applications for solving complex problems in several fields of scientific and technological research. Rough sets theory provides a solid theoretical background within the computational intelligence (CI) field for the qualitative reasoning required for analysing datasets loaded with uncertainties due to the vagueness and lack of precision associated with them. This paper describes the development of an intelligent Web service to process digital imagery, demonstrating the benefits of rough sets theory in dealing with the flexible supervised classification of the pixels associated with them.
Primary Hyperparathyroidism in a Twin Pregnancy: A Case Report  [PDF]
Luis Eduardo Pérez Sánchez, Julio César Jordan Balanza, Alicia Goya Pacheco, P.E.G. de Chaves Rodríguez, Manuel Barrera Gómez
Open Journal of Endocrine and Metabolic Diseases (OJEMD) , 2016, DOI: 10.4236/ojemd.2016.66022
Abstract: The primary hyperparathyroidism during pregnancy is an infrequent disorder but it is rarer in a twin gestation. Often it is not suspected because the symptomatology is overlapped with the normal course of pregnancy and it is usually discovered after a routine blood test. Ultrasound is the best option to identify the adenoma, while the gold-standard istechnetium-99 m sestamibi but is contraindicated in this situation. The treatment is controversial and depends of the time of the gestation: the medical therapy is accepted in the first and third trimester, and the surgery is reserved for the second trimester, where the side effects are low. We present a case of primary hyperparathyroidism in a twin pregnancy treated by a minimally invasive parathyroidectomy in the second trimester without consequences for both, mother and newborns.
Metástasis palpebral de carcinoma renal de células claras: A propósito de un caso
Pérez Suárez,Julio César; Alfonso Guillén,Boris; León Rodríguez,Yamilé;
Revista Cubana de Medicina , 2009,
Abstract: eyelids are formed by different types of tissue, from which may be developed many histological types of neoplasia. authors present the case of a man aged 70, operated on five years ago to excise a renal tumor two years later which metastasizes the brain. subsequently, patient is admitted in our hospital for exeresis at left eyelid level to eliminate mechanical ptosis provoked by tumor and to improve vision. histological study reports a renal origin of tumor.
Metástasis palpebral de carcinoma renal de células claras: A propósito de un caso Palpebral metastasis caused by clear cells renal carcinoma: A case presentation
Julio César Pérez Suárez,Boris Alfonso Guillén,Yamilé León Rodríguez
Revista Cubana de Medicina , 2009,
Abstract: Los párpados están constituidos por diferentes tipos de tejidos, de los cuales pueden desarrollarse diversos tipos histológicos de neoplasias. Se presentó un hombre de 70 a os de edad, operado hace 5 a os para extirparle un tumor renal, 2 a os después, el tumor metastiza al cerebro. Posteriormente, el paciente es ingresado en este hospital y se le realizó exéresis al nivel del borde del párpado izquierdo para eliminar la ptosis mecánica que el tumor le producía y mejorar la visión. El estudio histológico informa un origen renal del tumor. Eyelids are formed by different types of tissue, from which may be developed many histological types of neoplasia. Authors present the case of a man aged 70, operated on five years ago to excise a renal tumor two years later which metastasizes the brain. Subsequently, patient is admitted in our hospital for exeresis at left eyelid level to eliminate mechanical ptosis provoked by tumor and to improve vision. Histological study reports a renal origin of tumor.
Anemia y disminución de la fuerza en brazos y piernas en hombre de 52 a os Anemia and a decrease of arms and legs strength in a man aged 52
Cosme Manuel Cand Huerta,Julio César Pérez Suárez
Revista Cubana de Medicina , 2010,
Abstract:
Comportamiento electroquímico del cianuro
Pérez Domínguez,Julio César; Higuera Cobos,óscar Fabián;
Ingeniería y Desarrollo , 2008,
Abstract: in this work of investigation one studied the effect of the ph, the cyanide concentration and the oxygen concentration dissolved in solution on the adsorption phenomena and cyanide reduction using a glass coal electrode. it was observed that independent of the cyanide concentration in solution, the ph of the solution is smaller (aerated solutions) the current associated to the wave in - 0,95 v versus sce is more important that to ph's majors (deaireated solutions), so that it can be happening a competition between ions cyanide and hidroxil when adsorbing itself on the surface of the electrode to ph's majors, and low dissolved oxygen concentrations.
Universidad y tradición: notaciones sobre el contexto referencial de la racionalidad universitaria
Paulín Pérez, Georgina;Horta, Julio César;Siade Paulín, Gabriel Antonio;
Revista mexicana de ciencias políticas y sociales , 2012,
Abstract: this paper presents a central thesis: that humanistic language is the idiomatic context in which the western cultural universe or world has existence, and, by extension, where the academic world has existence and sense. in this frame, the authors analyze two main topics: a) the way in which meaning units, that name the referent university, articulate and organize humanistic contents that adjust along to the academic world which men have been postulating throughout history; and b) the evidence of inherited vocabulary of western thought in the traditional discourse of the national autonomous university of mexico.
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