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Search Results: 1 - 10 of 199829 matches for " Yanet; Baró Román "
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Dise?o de una formulación de fenilefrina 10 % y tropicamida 1 % colirio: eyedrops
Zu?iga Dedorite,Georgy Armando; García Pe?a,Caridad Margarita; Botet García,Martha; Troche Concepción,Yenilen; Montes de Oca Porto,Yanet; Baró Román,Gerardo;
Revista Cubana de Farmacia , 2010,
Abstract: the 10 % phenylephrine and 1 % tropicamide eyedrops is used in medical practice as antihistaminic, analgesic, mydiatric and cycloplegic. the aim of present paper was to develop a 10% phenylephrine and 1 % tropicamide formula fulfilling the quality specifications established by manufacturer physically, chemically and microbiologically stable with the performing of a design and pre-formula studies. also, we studied the quality specifications of selected formula, the product stability and its expiry time. an analytical method was developed and validated to quality control and stability study of the finished product by high-performance liquid chromatography. analytical results of accelerated stability study and by shelf life using 3 batches of product at pilot scale. eyedrops was physically, chemically and microbiologically stable when it was bottling in low density polyethylene flasks during 12 months of storage at room temperature.
Bases moleculares de las enfermedades mitocondriales
Arredondo Falagán,Aglais; Venet Cadet,Gleymis; Román Guerra,Olivia; Ramírez Delgado,Eglis Yanet;
MEDISAN , 2012,
Abstract: mitochondria are subcellular organelles whose primary role is to produce energy, which contain their own genetic system that encodes a small number of proteins that are part of the oxidative phosphorylation system. in recent years mutations in mitochondrial genetic material have been discovered, causing mitochondrial diseases. in order to increase and update the knowledge of the subject a literature survey was performed, where the relationship of mitochondria with conditions such as alzheimer's, parkinson's and diabetes mellitus, to name a few, is also stated.
Bases moleculares de las enfermedades mitocondriales Molecular basis of mitochondrial diseases
Aglais Arredondo Falagán,Gleymis Venet Cadet,Olivia Román Guerra,Eglis Yanet Ramírez Delgado
MEDISAN , 2012,
Abstract: Las mitocondrias son orgánulos subcelulares que tienen como misión principal la producción de energía, los cuales contienen su propio sistema genético que codifica un número peque o de proteínas que forman parte del sistema de fosforilación oxidativa. En los últimos a os han sido descubiertas mutaciones en el material genético mitocondrial que originan las enfermedades mitocondriales. Con el objetivo de contribuir a elevar y actualizar el conocimiento acerca del tema se realizó una revisión bibliográfica, donde se expone, además, la relación de las mitocondrias con afecciones como el alzheimer, el parkinson y la diabetes mellitus, por citar algunas. Mitochondria are subcellular organelles whose primary role is to produce energy, which contain their own genetic system that encodes a small number of proteins that are part of the oxidative phosphorylation system. In recent years mutations in mitochondrial genetic material have been discovered, causing mitochondrial diseases. In order to increase and update the knowledge of the subject a literature survey was performed, where the relationship of mitochondria with conditions such as Alzheimer's, Parkinson's and diabetes mellitus, to name a few, is also stated.
Evaluación de la toxicidad aguda oral y de la actividad antimicrobiana de una mezcla de aceite de hígado de tiburones de Cuba Assessment of the oral acute toxicity and the antimicrobial activity of an oily mixture from shark's liver of Cuba
Caridad Margarita García Pe?a,Addis Bellma Menéndez,Gerardo Baró Román,Mirna Fernández Cervera
Revista Cubana de Farmacia , 2010,
Abstract: Se evaluó la toxicidad aguda oral y la actividad antimicrobiana de una mezcla de aceites de hígado de tiburón, de las especies Rhincodon typu (tiburón ballena) y Galeocerdo cuvier (tiburón tigre), que habitan en zonas aleda as a las costas del litoral norte occidental de Cuba, para su posterior uso farmacéutico, debido a que presenta un alto contenido de vitaminas y de ácidos grasos, que le confieren actividad antioxidante y antiinflamatoria. El estudio de la toxicidad aguda oral demostró que la mezcla de aceites de hígado de tiburones, no provocó alteraciones macroscópicas en los órganos extraídos, ni síntomas tóxicos severos, ni mortalidad de ninguno de los animales empleados en el estudio a la dosis de 20 mL/kg. Los resultados del estudio de la actividad antimicrobiana demostraron una ligera actividad bacteriostática frente a K. pneumoniae; además una actividad antifúngica frente a Microsporum canis; y resistencia frente a C. albicans y T. mentagrophytes a las concentraciones evaluadas. The total acute toxicity and the antimicrobial activity of an oil mixtures from shark liver of Rhicodon typu (whale-shark) and Galeocerdo cuvier (tigger-shark) was assessed in species leaving in the adjacent costs of Cuban northern coastal for its subsequent pharmaceutical use due to its high content of vitamins and fatty acids and its antioxidant and anti-inflammatory activity. Study of oral acute toxicity demonstrated that oil mixture of shark liver hasn't macroscopic alterations in removed organs, severe toxic symptoms and on mortality of any animals used in study at 20 mL/kg dose. Study results of antimicrobial activity showed a slight bacteriostatic activity against K. pneumoniae and an antifungal activity against Microsporum canis, and a resistance against C. albicans and T. mentagrophytes at assessed concentrations.
Redefinition of the Terminus of the Middle America Trench  [PDF]
Román Alvarez
International Journal of Geosciences (IJG) , 2013, DOI: 10.4236/ijg.2013.44070
Abstract:

The terminus of the Middle America Trench has been traditionally represented as an arc, concave towards the continent. Tres Marías Islands are located at the terminus of the Middle America Trench in western Mexico, and their location is not only intriguing but also a key to the re-construction of the position of Baja California peninsula before separation from the North America plate. Previous re-constructions suggested various places around the location of Tres Marías Islands for the position of the tip of the peninsula, and several converge to a position that invades the area occupied by the islands, offering no explanation for the overlap. Before peninsular separation from North America, the Guadalupe trench followed a smooth curve; recreating the position of this paleo-trench yields a baseline for fixing the position of the peninsula, as well as the original position of the Tres Marías Islands fragment. A new tectonic view of the structure of the Middle America Trench terminus is proposed, replacing the traditional arc representation with a series of en echelon blocks, the northernmost terminates at the Tres Marías Escarpment. The long sides of the blocks correspond to previously identified geological faults in the Bahía de Banderas region, while their offshore continuation is supported by topographic observations. As a test of this model I show the corresponding re-construction of the position of Baja California prior to separation from the North America plate and the positional evolution of the peninsula and the Tres Marías fragment from Chron 4n.2 (7.90 Ma) to Chron 3n.4 (5.12 Ma).

Replacement of Process Scale Chromatography by Counterflow Membrane Cascades  [PDF]
Edwin N. Lightfoot, Bar?? ünal
Advances in Bioscience and Biotechnology (ABB) , 2014, DOI: 10.4236/abb.2014.511106
Abstract: Invention and innovation, always important, become ever more so in these fast changing and competitive times. They are in addition primarily dependent upon the dynamic behavior of the human mind. Our underlying purpose here is to examine these creative processes and to provide means to make them more effective. This is a timely effort because our understanding of perception and its interpretation by the human brain is very rapidly advancing. Even experimental insights into mental activity can be determined with rapidly increasing effectiveness. The framework of our discussion is that of evolution dynamics, and the scientific bases are rapidly developing neural sciences. However the bulk of our discussion deals with a specific example: the replacement of process scale chromatography by membrane-mediated steady counterflow in downstream processing. We do this because inventive activities must depend upon intimate knowledge of the systems available.
Southward Migration of Magmatic Activity in the Colima Volcanic Complex, Mexico: An Ongoing Process  [PDF]
Román Alvarez, Vsevolod Yutsis
International Journal of Geosciences (IJG) , 2015, DOI: 10.4236/ijg.2015.69085
Abstract: The Colima Volcanic Complex trends in a nearly N-S direction in western Mexico, and one of itsstructures, Colima volcano, is the most historically active volcano in the country. Immediately to theN, there is another volcanic center called El Cántaro volcano, whose activity started around 1.7 Ma in its N portion and migrated to the S in various episodes. Volcanic activity migrated further south, from El Cántaro to the Colima Volcanic Complex where the southernmost manifestation, Hijos del Volcán domes, is located on the south slope of Fuego volcano. The above date appears to mark initiation of the rather continuous volcanic activity in the area. It has been noted that these volcanic manifestations lie on, or near the Rivera-Cocos inland plate boundary. Colima’s Fuego volcano is also the closest to the Middle America Trench, among the polygenetic volcanoes in Mexico. We submit that the anomalous location of volcanism in this area originates in an anomalous subduction process of the Rivera and Cocos plates and evoke a tectonic model, proposed elsewhere, to support the idea. Modeling gravimetric and aeromagnetic data we locate the magma chambers of the Fuego (active) and Nevado (extinct) volcanoes within a 65 mGals negative Bouguer anomaly elongated in a nearly N-S direction. The corresponding aeromagnetic map displays a magnetic high over the southern portion of the Fuego volcano edifice. We found two additional, associated structures whose anomalies have not been previously reported, which appear to follow the southward magmatic migration pattern. One of them is a collapse structure with a circular topographic expression, and the southernmost is a low-density intrusion ~1 km below sea level, associated with a moderate topographic bulge at the surface that we interpret as a magma body. Five lines cross the anomalies; gravimetric and magnetic fields are concurrently modeled along them to locate the magmatic bodies. In addition to the 2-D models we perform 3-D gravimetric and magnetic inversions. For each field a 3-D mesh is built under the area occupied by the Colima Volcanic Complex, the volume elements are then assigned density or magnetic susceptibility values and their surface contributions in various points are evaluated. The process is
Experiencia espa?ola en el dise?o de políticas de información y documentación
Román Román, Adelaida;
Ciência da Informa??o , 1997, DOI: 10.1590/S0100-19651997000300012
Abstract: evolution of the spanish experience in the design of information and documentation policies. analysis os today's challenges that are being faced by spain points to the need of new governmental programs, nevertheless all the positive impacts of the european union' policies in the field of information.
Estrés académico y afrontamiento en estudiantes de Medicina
Díaz Martín,Yanet;
Humanidades M??dicas , 2010,
Abstract: stress coping strategies are considered as health protective factors. positive coping supports a healthy life style and favors both mental health and quality of life. from this viewpoint, medical students′ academic stress and coping styles are characterized. with a sample of 42 second-year medical students from the medical school of camagüey, a descriptive study was carried out during academic course 2007-2008. tests and surveys were applied. results showed that the most important factors within the academic context are: taking exams, academic overload, and lack of time to complete school tasks. concerning coping styles, strategies focused on solving problems were predominant, such as: active coping, positive reinterpretation, development after elaborating an action plan, situation coping, and learning from experiences. there was little prevalence of passive coping focused on emotions. as conclusions, the whole sample proved to be vulnerable to stress.
Estrés académico y afrontamiento en estudiantes de Medicina Academic stress and coping in medical students
Yanet Díaz Martín
Humanidades M??dicas , 2010,
Abstract: Las estrategias de afrontamiento al estrés son consideradas factores protectores de la salud. El afrontamiento positivo promueve un estilo de vida salutogénico favoreciendo la salud mental y la calidad de vida. Desde esta perspectiva se caracteriza al estrés académico y los estilos de afrontamiento de estudiantes de Medicina. Durante el curso 2007-2008 se realizó un estudio descriptivo con una muestra de 42 estudiantes del primer a o de Medicina del Instituto Superior de Ciencias Médicas de Camagüey, a los que se les aplicaron exámenes y encuestas. Los resultados mostraron que los factores más significativos dentro del contexto académico son: la realización de un examen, la sobrecarga académica y la falta de tiempo para cumplir las tareas docentes. En cuanto los estilos de afrontamiento, predominaron las estrategias enfocadas en la solución del problema como el afrontamiento activo, la reinterpretación positiva, el crecimiento a partir de la elaboración de un plan de acción, el afrontamiento de la situación y el aprendizaje de la experiencia. Hay un bajo predominio del afrontamiento pasivo centrado en la emoción. Se concluye que toda la muestra es vulnerable al estrés. Stress coping strategies are considered as health protective factors. Positive coping supports a healthy life style and favors both mental health and quality of life. From this viewpoint, medical students′ academic stress and coping styles are characterized. With a sample of 42 second-year medical students from the Medical School of Camagüey, a descriptive study was carried out during academic course 2007-2008. Tests and surveys were applied. Results showed that the most important factors within the academic context are: taking exams, academic overload, and lack of time to complete school tasks. Concerning coping styles, strategies focused on solving problems were predominant, such as: active coping, positive reinterpretation, development after elaborating an action plan, situation coping, and learning from experiences. There was little prevalence of passive coping focused on emotions. As conclusions, the whole sample proved to be vulnerable to stress.
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