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Search Results: 1 - 10 of 45089 matches for " Alonso Diego Fernández "
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EFECTO DE LA LUZ Y DEL áCIDO GIBERéLICO (AG3) EN LA GERMINACIóN DE Minthostachys mollis KUNTH. GRISEB.(LABIATAE)
SUáREZ,DIEGO; FERNáNDEZ ALONSO,JOSé LUIS; MELGAREJO,LUZ MARINA;
Acta Biológica Colombiana , 2011,
Abstract: minthostachys mollis (kunth) griseb., is a perennial shrub that grows in the andean region of colombia; this species is widely used by rural communities where it is valued for its medicinal properties. the aim of this study was to determine the effect of light (red light, white light, and natural light) and gibberellic acid (0, 5, 15, 25 ppm) on the process of germination of m. mollis. we found a strong inhibition of germination under conditions of darkness. we do not observe effect of ag3 on germination. the germination percentages obtained were above 80% (positive photoblastic seeds) for the three proposed lighting treatments where red-light treatment had a most significant effect on the germination process.
Drop Size Measurements in a Laboratory Scale Venturi Scrubber
Alonso, Diego Fernández;Azzopardi, Barry J.;Gon?alves, José Ant?nio Silveira;Coury, José Renato;
Journal of the Brazilian Society of Mechanical Sciences , 2001, DOI: 10.1590/S0100-73862001000400008
Abstract: venturi scrubbers are high efficiency gas cleaners in which suspended particles are removed from gas streams by droplets formed by liquid atomisation, usually in the venturi throat. the size of the droplets formed is of fundamental importance to the performance of the equipment, both in terms of pressure drop and collection efficiency. in this study, drop sizes in a cylindrical laboratory scale venturi scrubber were measured using a laser diffraction technique. gas velocity and liquid to gas ratios varied from 50 to 90 m/s and 0.5 to 2.0 l/m3, respectively. water was inserted as perpendicular jets at the beginning of the throat. measurements were performed at three positions: two located along the throat, and the last one at the end of the diffuser. the data presented here are a typical example of pneumatic atomisation and can be relevant to other industrial applications such as combustion and engine technology. finally, results are compared to available correlations and the validity of these equations is discussed.
EFFECT OF LIGHT AND GIBERELLIC ACID (AG3) ON THE GERMINATION OF MINTHOSTACHYS MOLLIS (LABIATAE)
Suárez Pe?aranda Diego Fernando,Fernández Alonso José Luis,Melgarejo Luz Marina
Acta Biológica Colombiana , 2011,
Abstract: Minthostachys mollis (Kunth) Griseb. o mu a es un arbusto perenne que crece naturalmente en las región andina de Colombia; esta especie es ampliamente utilizada por las comunidades rurales en donde es valorada por sus propiedades medicinales para tratar diferentes afecciones y como control de larvas de insectos transmisores de enfermedades; sin embargo, las poblaciones naturales de esta planta han sido fuertemente reducidas por acción antrópica, por lo tanto, es necesario generar tecnologías de propagación que permitan la recuperación y conservación de las poblaciones naturales. El objetivo de este estudio fue determinar el efecto de la luz (luz roja, luz blanca, luz natural) y del ácido giberélico (0, 5, 15, 25 ppm) en el proceso de germinación de M. mollis. Se encontró un efecto negativo de la oscuridad en el proceso de germinación y no se observó efecto del AG3 sobre la germinación de M. mollis en presencia de la luz. Los porcentajes de germinación obtenidos en los tratamientos de iluminación fueron superiores al 80% sobresaliendo el tratamiento de luz roja que arrojó los mejores resultados tanto en el porcentaje como en la velocidad de germinación. Los resultados indican que la germinación en M. mollis es dependiente de la luz debido a que sus semillas son fotoblásticas positivas.
Health-related physical condition variables in university students
DIEGO ALONSO FERNáNDEZ,áGUEDA GUTIéRREZ SáNCHEZ,MARGARITA PINO JUSTE
Journal of Human Sport and Exercise , 2012,
Abstract: The aim of this study was to assess the health of individuals over a sample of university students, by measuring variables related to fitness as a basis for reorienting physical activity programmes offered by the university sports services to optimise healthy physical condition of its users. We developed a descriptive study with a sample of 217 students of the University of Vigo applying battery tests AFISAL-INEFC variables measuring health-related physicalcondition variables: body composition, muscular strength, flexibility and maximal oxygen uptake. Since not all variables are normally distributed we used the nonparametric tests Mann-Whitney U and Chi-Square(χ2), using a significance level of p <0.05. The results showed that in the hand-grip variables, peak oxygenconsumption and lower body explosive power, women had a higher percentage of individuals with low fitness. The opposite situation occurred with the variable of trunk flexibility and hamstring muscles where men showed a lesser capacity. From a global view, the lower body explosive strength was the variable in which the university had a worse condition with 65.3% of subjects with low fitness. It would be positive to increase healthy physical activity programmes promote exercise in our target population (university students), particularly those affecting strength capacity and flexibility in both upper and lower body.
Drop Size Measurements in a Laboratory Scale Venturi Scrubber
Alonso Diego Fernández,Azzopardi Barry J.,Gon?alves José Ant?nio Silveira,Coury José Renato
Journal of the Brazilian Society of Mechanical Sciences , 2001,
Abstract: Venturi scrubbers are high efficiency gas cleaners in which suspended particles are removed from gas streams by droplets formed by liquid atomisation, usually in the venturi throat. The size of the droplets formed is of fundamental importance to the performance of the equipment, both in terms of pressure drop and collection efficiency. In this study, drop sizes in a cylindrical laboratory scale venturi scrubber were measured using a laser diffraction technique. Gas velocity and liquid to gas ratios varied from 50 to 90 m/s and 0.5 to 2.0 l/m3, respectively. Water was inserted as perpendicular jets at the beginning of the throat. Measurements were performed at three positions: two located along the throat, and the last one at the end of the diffuser. The data presented here are a typical example of pneumatic atomisation and can be relevant to other industrial applications such as combustion and engine technology. Finally, results are compared to available correlations and the validity of these equations is discussed.
Palladium and Organocatalysis: An Excellent Recipe for Asymmetric Synthesis
M. ángeles Fernández-Iba?ez,Beatriz Maciá,Diego A. Alonso,Isidro M. Pastor
Molecules , 2013, DOI: 10.3390/molecules180910108
Abstract: The dual activation of simple substrates by the combination of organocatalysis and palladium catalysis has been successfully applied in a variety of different asymmetric transformations. Thus, the asymmetric a-allylation of carbonyl compounds, a-fluorination of acyl derivatives, decarboxylative protonation of β-dicarbonyl compounds, cyclization reactions of alkynyl carbonyl compounds and β-functionalization of aldehydes have been efficiently achieved employing this double-catalytic methodology.
Ambulatory Blood Pressure Monitoring in the Elderly
Juan Diego Mediavilla García,Fernando Jaén águila,Celia Fernández Torres,Blas Gil Extremera,Juan Jiménez Alonso
International Journal of Hypertension , 2012, DOI: 10.1155/2012/548286
Abstract: The incidence of hypertension is high in the elderly and is present in 2/3 of the patients older than 65 years. Prevalence can reach 90% in patients older than 80 years. The presence of isolated systolic hypertension (ISH) is characteristic of this population. However, the prevalence of hypertension by ambulatory blood pressure monitoring (ABPM) is not well known. In this study, we analyzed the special characteristics of hypertension in this population, giving special emphasis on ABPM readings.
Seguimiento del esfínter urinario artificial FlowSecure
Alonso Rodríguez,Diego; Fernández Barranco,Lorena; García-Montes,Fernando; Mora Salvá,Antonia; Ozonas Moragues,Mariano;
Actas Urológicas Espa?olas , 2009, DOI: 10.4321/S0210-48062009000900004
Abstract: the ams-800 artificial urinary sphincter has been the only prosthesis available for treatment of stress urinary incontinence refractory to other therapeutic modalities for the past 25 years. the relatively high rate of complications occurring with the ams-800 device during this time led to introduce a number of cahnges in its design that resulted in a new prostheses, the flowsecure artificial sphincter. the flowsecure artificial urinary sphincter is an adjustable prosthesis filled with normal saline without contrast. plain x-rays cannot therefore be used for monitoring, and ultrasound is the most adequate radiographic technique for evaluation. in addition to calculating the post-void residue, ultrasound allows for verifying prosthesis status and for calculating the urethral occluding pressure. a detailed clinical history and flow rate measurement should be used together with the ultrasound scan to functionally assess patients with the flowsecure device in order to determine the need for adjusting system pressure to the minimum pressure required for total continence.
Women sport injuries: a retrospective study of elite windsurfers
ALFONSO PENICHET-TOMáS,DIEGO ALONSO-FERNáNDEZ,AGUEDA GUTIERREZ-SáNCHEZ,ELISEO ANDREU-CABRERA
Journal of Human Sport and Exercise , 2012,
Abstract: This study was designed to identify the injuries of professional women windsurfers, from their anatomical location, type of sport, context when they occurred, type of injury, the time of inactivity as a result of the same, the type of health care received and the relationship between the number of injuries and the position in the final classification of professional windsurfing competitions. We gave a retrospective questionnaire to 18 women elite windsurfers, who took part in the World Cup competition held in Fuerteventura (2008). Women are injured more frequently during training than competition (77.8%; p<0.05 vs. 20.5%). Women suffer leg injuries more than men (83.3%; p<0.05 vs. 14.3%) in freestyle. Serious injuries were more frequent for women (66.7%; p<0.05 vs. 28.2%) and the time of inactivity due to the injury was shorter for women (50%; p<0.05 vs. 20.5%). These results indicate that female windsurfers are more liable to suffer injuries, generally serious, during training sessions. Freestyle involves a greater risk of leg injuries for women. The knee is the area where most injuries occur, both for men and women, followed by the legs.
Estenosis hipertrófica de píloro y anestesia espinal Hypertrophic pyloric stenosis and spinal anesthesia
I. Fernández Jiménez,A. Sánchez Abuín,E. de Diego García,J.M. Maestre Alonso
Boletín de Pediatría , 2009,
Abstract: Introducción: La realización de la piloromiotomía extramucosa con abordaje umbilical o supraumbilical bajo anestesia espinal puede contribuir a la disminución de la morbimortalidad potencial asociada al tratamiento quirúrgico de la estenosis hipertrófica de píloro (EHP). Pacientes y métodos: Se realizó un estudio retrospectivo de 60 pacientes con EHP. Se analizaron la edad al diagnóstico, clínica, tipo de anestesia y evolución postoperatoria. En 50 pacientes se indujo anestesia general con atropina, fentanilo, propofol, succinil-colina y sevoflurano. En 10 pacientes se realizó bloqueo espinal con bupivacaína 0,5% hiperbárica espinal y sedación con bolos de propofol. Resultados: La edad media al diagnóstico fue de 34,07 días. Todos presentaron vómitos proyectivos, y se asociaron a pérdida de peso (33,3%), irritabilidad (15%), deshidratación (6,6%), ictericia (5%) y estre imiento (5%). El tiempo medio de evolución fue de 4,8 días. El diagnóstico se realizó mediante ecografía abdominal en todos los casos. En los casos de anestesia espinal, el bloqueo se instauró en menos de 10 minutos, los niveles sensitivos alcanzados oscilaron entre T3-T5 y el tiempo medio de duración fue de 60 minutos. En ningún caso se registró bradicardia <100 latidos/minuto, saturación <95%, apneas >15 segundos, ni cambios en la tensión arterial >15%. El inicio medio de la tolerancia oral fue de 18,7 horas para los pacientes intervenidos con anestesia general, y de 9,5 horas para el grupo de anestesia espinal. Un paciente precisó ingreso postoperatorio en la UCI pediátrica por necesidad de intubación prolongada. Conclusiones: La anestesia espinal en la piloromiotomía extramucosa es una alternativa segura a la anestesia general. El acceso y las condiciones quirúrgicas son iguales a los realizados bajo anestesia general. Nuestros resultados sugieren que puede disminuir el tiempo de inicio de tolerancia oral y de ingreso hospitalarios. Background: The pyloromyotomy procedure with umbilical or supraumbilical incision is generally performed under general anesthesia. Potential morbimortality is associated with postoperative apnoea and pulmonary aspiration. Spinal anesthesia may contribute to decrease these complications. Patients and methods:We report a retrospective study of 60 patients with congenital pyloric stenosis (CPS). We analyzed the age at diagnosis, symptoms, anesthesia and postoperative outcome. Fifty patients received general anesthesia with atropine, fentanyl, propofol, succinylcholine and sevoflurane. Ten patients underwent spinal anesthesia with hyperbaric bupivacaine 0,5% a
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