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Search Results: 1 - 10 of 557249 matches for " Fernando Urzúa V "
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CERVICO HISTEROPEXIA SACRA CON REPARACIóN PARAVAGINAL
Laíz R,Domingo; Urzúa V,Fernando;
Revista chilena de obstetricia y ginecología , 2006, DOI: 10.4067/S0717-75262006000100006
Abstract: it is showed the case of a patient with complete genital prolapse with a heavy uterine component; besides, the woman shows a secondary sexual dysfunction but she wants to preserve the uterus because of the incomplete parity. a cervicosacropexia is carried out with a prolene mesh. because of repairing a paravaginal imperfection a good uterine suspension is achieved. six months after the operation, the patient does not have prolapse. she does not show any sign of her previous dysfunction. the woman is in good sexual condition and plans a future pregnancy
CERVICO HISTEROPEXIA SACRA CON REPARACIóN PARAVAGINAL
Domingo Laíz R,Fernando Urzúa V
Revista Chilena de Obstetricia y Ginecología , 2006,
Abstract: Se presenta el caso de una paciente con diagnóstico de prolapso genital completo con marcado componente uterino y disfunción sexual secundaria, quien desea conservación de este órgano por paridad incompleta. Se realiza cervicosacropexia con malla de prolene y reparación de defecto paravaginal logrando buena suspensión uterina. La paciente a los seis meses de operada se encuentra sin prolapso. Se mantiene asintomática con buena función sexual y en planificación de un próximo embarazo It is showed the case of a patient with complete genital prolapse with a heavy uterine component; besides, the woman shows a secondary sexual dysfunction but she wants to preserve the uterus because of the incomplete parity. A cervicosacropexia is carried out with a prolene mesh. Because of repairing a paravaginal imperfection a good uterine suspension is achieved. Six months after the operation, the patient does not have prolapse. She does not show any sign of her previous dysfunction. The woman is in good sexual condition and plans a future pregnancy
INTERACCIóN RHIZOBIUM LEGUMINOSARUM BV TRIFOLII Y HONGOS MICORRíCICOS EN UN ANDISOL CON DIFERENTES NIVELES DE SATURACIóN DE ALUMINIO
Castillo R,Claudia G; Rubio H,Rosa; Urzúa S,Horacio; Borie B,Fernando;
Idesia (Arica) , 2008, DOI: 10.4067/S0718-34292008000300002
Abstract: aluminium phytotoxicity is a serious limitation of the productivity of prairies growing on volcanic soil by affecting nodulation and effectiveness of rhizobium. the aim of this study was to select rhizobium strains to determine the effect as inoculant on trifolium repens cropped in an andisol with different aluminium saturation levels. acidity tolerance (ph 4.5 and 6.0) of twelve rhizobium strains of collection at three al levels (100, 200, 300 μm) was evaluated in mineral nutritive medium vitro. simultaneously, in a greenhouse trial, strains effectivity were tested by inoculation of trifolium pratense growing in an acidic andisol and compared with dry matter accumulation produced by native strains. according to the results of this two trials, three rhizobium strains (r-109, r-113 and r-115) were selected to study the effect of their inoculation on trifolium repens growth cropped in an andisol at four al saturation levels (sal1 to sal4). in addition, the effect on arbuscular mycorrhizal propagules was also studied. plants showed different capacity for association with the inoculated strains giving the best response r-113 at sal1 level with positive synergism expressed by microbiological parameters such as high nodulation (16 nodules pot-1), amf spore number (384 spores 100 g-1), root colonization percentage (45%), together with agronomical variables with an increase of aerial phytomass (93,5%) in comparison with the control. higher al levels had an deleterious effect on the inoculation of collection strains; therefore, with r-109 strain inoculation the smallest root growth and nodulation were observed in comparison with soil with native strains whereas r-113 was the more effective one.
INTERACCIóN RHIZOBIUM LEGUMINOSARUM BV TRIFOLII Y HONGOS MICORRíCICOS EN UN ANDISOL CON DIFERENTES NIVELES DE SATURACIóN DE ALUMINIO INTERACTION OF RHIZOBIUM LEGUMINOSARUM BV TRIFOLII AND MYCORRHIZAL FUNGI IN AN ANDISOL AT DIFFERENT LEVELS OF ALUMINIUM SATURATION
Claudia G Castillo R,Rosa Rubio H,Horacio Urzúa S,Fernando Borie B
IDESIA , 2008,
Abstract: La fitotoxicidad por Al es una seria limitante de la productividad de praderas crecidas sobre suelos volcánicos afectando la nodulación y efectividad de los Rhizobium. El objetivo del estudio consistió en seleccionar cepas de Rhizobium de colección para estudiar su efectividad en Trifolium repens crecido en un Andisol con cepas nativas y distinta saturación de Al. Para ello se evaluó previamente en caldo nutritivo la tolerancia a la acidez y toxicidad por Al de 12 cepas de colección mediante control de curvas de crecimiento. Paralelamente, se inocularon los Rhizobium en un Andisol para evaluar su efectividad mediante rendimiento de Trifolium pratense. Se seleccionaron las cepas R-109, R-113 y R-115 para inocularlas en el Andisol utilizando cuatro tratamientos: suelo adicionado de 2 Mg CaCO3 ha-1 (SAl1), un testigo (SAl2) y suelo adicionado de dos niveles de saturación Al (SAl1, SAl4) utilizando Trifolium repens como hospedero. Las plantas mostraron capacidad para asociarse con las especies inoculadas presentando mayor efectividad R-113-SAl1 sinergismo positivo expresado en variables microbiológicas como nodulación (16 nódulos maceta-1), esporas de hongos micorrícicos arbusculares, HMA (384 esporas 100g-1), colonización HMA (45%) junto con variables agronómicas alcanzándose un incremento de biomasa foliar (93,5%) frente al testigo. Niveles más elevados de Al afectaron la inoculación con cepas de colección; así, con R-109 se obtuvo el menor crecimiento radical y nodulación respecto al suelo natural mientras que R-113 fue la cepa más efectiva. Aluminium phytotoxicity is a serious limitation of the productivity of prairies growing on volcanic soil by affecting nodulation and effectiveness of Rhizobium. The aim of this study was to select Rhizobium strains to determine the effect as inoculant on Trifolium repens cropped in an Andisol with different aluminium saturation levels. Acidity tolerance (pH 4.5 and 6.0) of twelve Rhizobium strains of collection at three Al levels (100, 200, 300 μM) was evaluated in mineral nutritive medium vitro. Simultaneously, in a greenhouse trial, strains effectivity were tested by inoculation of Trifolium pratense growing in an acidic Andisol and compared with dry matter accumulation produced by native strains. According to the results of this two trials, three Rhizobium strains (R-109, R-113 and R-115) were selected to study the effect of their inoculation on Trifolium repens growth cropped in an Andisol at four Al saturation levels (SAl1 to SAl4). In addition, the effect on arbuscular mycorrhizal propagules was also studied. P
A Structure-Activity Study of Antibacterial Diterpenoids
Alejandro Urzúa,Marcos C. Rezende,Carolina Mascayano,Loretta Vásquez
Molecules , 2008, DOI: 10.3390/molecules13040822
Abstract: An analysis of the antibacterial activities of 15 terpenoids, eleven of which werepreviously described by us and four were extracted from the literature, suggested twostructural requirements for activity of these and related compounds: a hydrophobic moiety,consisting of a substituted decalin skeleton, and a hydrophilic region possessing onehydrogen-bond-donor group. These structural requirements are responsible for an optimalinsertion of these and related compounds into cell membranes, as suggested by the resultsof docking some of these compounds into a model phospholipid bilayer.
Sífilis ocular: Presentación de diez casos y revisión de la literatura Ocular syphilis: Ten new cases and review of the literature
Pablo Romero C,Cristhían Urzúa S,Patricia Gallardo V,Juan Verdaguer T
Revista chilena de infectología , 2010,
Abstract: Introducción: Las manifestaciones oculares de los pacientes con sífilis pueden comprometer cualquiera de las estructuras del ojo. Objetivos: Describir diez nuevos casos de sífilis con compromiso ocular y realizar una breve discusión de su manejo y tratamiento. Pacientes y Métodos: Se estudiaron, de forma retrospectiva, diez casos en un período de 13 a os. Se evaluaron factores demográficos, exámenes oftalmológico y de laboratorio. Resultados: De los diez casos, 7 eran hombres y 3 mujeres. El promedio de edad fue de 39,7 a os. Las presentaciones fueron: panuveítis (n: 6), neuritis óptica (n: 3), vasculitis retinal (n: 1) y pupila de Argyll-Robertson (n: 1). Se obtuvo VDRL (+) en líquido cefalorraquídeo en 6 pacientes y serología para VIH (+) en 3 pacientes. Conclusiones: La sífilis puede producir variadas manifestaciones oftalmológicas. No en todos los casos el VDRL resultó positivo en el LCR. El tratamiento anti-treponémico produce una rápida y efectiva respuesta en los pacientes afectados. Introduction: Ocular manifestations in patients with syphilis may involve almost any of the structures of the eye. Objectives: To describe ten new cases of syphilis with eye involvement and to briefly discuss the management and therapy of such condition. Material and Methods: Ten cases were retrospectively studied over 13 years. Demographic factors, ophthalmologic examination, and laboratory tests were assessed. Results: Seven of the 10 cases were male and 3 were female. The mean age of patients was 39,7 years. Disease presentation included: panuveitis (6 patients), optic neuritis (3), retinal vasculitis (1) and Argyll-Robertson pupil (1). Cerebrospinal fluid VDRL test was positive in 6 patients and 3 patients were HIV (+). Conclusions: Syphilis is able to display diverse ophthalmologic manifestations. Not in all the cases the CSF-VDRL test was positive. Antitreponemal therapy generates a fast and effective response in the affected patients.
ABSCESO EPIDURAL LUMBAR POST HERNIA DISCAL TRAUMáTICA: CASO CLíNICO
Sajama l,Carlos; Munjin L,Milán; Marré P,Bartolomé; Arriagada V,Víctor; Urzúa B,Alejandro;
Revista chilena de radiología , 2009, DOI: 10.4067/S0717-93082009000100007
Abstract: we report the case of a 42-year-old male patient presenting with trauma history and lumbar spine axial compression which caused a herniated nucleus pulposus at lumbar level, revealed through mri. after a four-day evolution period, fever and laboratory alterations indicative otan infectious process appear without signs of neurologic involvement. hemoculture was positive for staphylococcus aureus and mri showed the presence of a lumbar spinal abscess secondary to infected epidural hematoma. the patient was treated with antibiotics, being given ceftriaxone, metronidazol, and gentamicin as an initial theraphy switched subsecuently to cloxaciline and cefazoline, he showed a favourable evolution, completing a six-week period of endovenous treatment plus fourweeks receiving oral therapy the patient was discharged in good condition with no neurologic deficit.
Prevalencia de caries en escolares de 6 a 15 a os, Isla de Pascua Caries prevalence in 6 to 15 year-old school children, from Easter Island
V Gómez González,R Cabello Ibacache,G Rodríguez Martínez,I Urzúa Araya
Revista Clínica de Periodoncia, Implantología y Rehabilitación Oral , 2012,
Abstract: Objetivo: El objetivo de este estudio fue determinar la prevalencia y severidad de caries de piezas permanentes y algunos factores de riesgo relacionados en un grupo de escolares de Isla de Pascua. Materiales y Métodos: 116 ni os de 6 a 15 a os de edad fueron seleccionados al azar. Se efectuó examen clínico individualizado y se registraron los índices COP-D, significante de caries (SIC), de Higiene Oral de Greene y Vermillon (G-V) y se realizó una encuesta de dieta. Para conocer la frecuencia y recuento de Streptococcus mutans y Streptococcus sobrinus, se tomaron muestras de saliva estimulada a 23 ni os Rapa Nui elegidos al azar. Finalmente, se analizaron muestras de agua potable en 3 sitios distintos de la isla para medir la cantidad de flúor disponible. Resultados: La prevalencia de caries en piezas permanentes fue 38%. El COP-D fue 1.19. El valor promedio del G-V fue 1.63. Se aisló e identificó S. mutans y S. sobrinus en el 56.2% y 13.2% respectivamente. El recuento promedio para S. mutans fue de 3.3x105 UFC/ml saliva y para S. sobrinus fue de 7.2x104 UFC/ml. Se observó un promedio de 0.223 ppm/Fluoruro en el agua. Desviación Estándar 0.025 ppm. Según la encuesta de dieta el 30% de los ni os presenta bajo riesgo de caries, el 47% presenta mediano riesgo y el 23% presenta alto riesgo. Conclusión: El 38% presenta historia de caries en piezas permanentes. El COP-D promedio es 1.19. En ni os Rapa Nui 0.9 y en No Rapa Nui 1.77. Aim: The aim of this study was to determine the prevalence and severity of caries and some related risk factors in a group of school children from Easter Island. Materials and Methods: 116 children aged 6 to 15 years were randomly selected. Individual clinical examination was performed and index COP-D, significant caries index (SIC), Greene and Vermillon Oral Hygiene index (GV) were recorded. A diet survey was performed. To determine the frequency and count of Streptococcus mutans and Streptococcus sobrinus, stimulated saliva samples were collected from 23 Rapa Nui children randomly selected. Finally, samples of drinking water in 3 different places of the island were analyzed to measure the amount of fluoride available. Results: Caries prevalence was 38%. COP-D index was 1.19. The mean value of G-V was 1.63. S. mutans and S. sobrinus were isolated and identified in 56.2% and 13.2% of the samples, respectively. The average count for S. mutans was 3.3 x105 CFU/ml saliva and for S. sobrinus was 7.2 x104 CFU/ml. A mean of 0.223 Standard Deviation 0.025 ppm/Fluoride was observed in drinking water. According to the diet survey, 30% of ch
SECONDARY METABOLITES IN THE EPICUTICLE OF HAPLOPAPPUS FOLIOSUS DC. (ASTERACEAE)
URZúA,ALEJANDRO;
Journal of the Chilean Chemical Society , 2004, DOI: 10.4067/S0717-97072004000200006
Abstract: from the ch2cl2 extract of the surface of haplopappus foliosus, monoterpenes, sesquiterpenes, flavonoids, coumarins, phenyl propanoids, n-alkanes and different miscellaneous compounds were identified. the complexity of the chemistry in terms of number of families and compounds makes attractive the use of this specie as a model to study variations in the cuticle chemistry, triggered by different ecological pressures. keywords: haplopappus foliosus; monoterpenes; sesquiterpenes; flavonoids; coumarins; phenyl propanoids, n-alkanes; miscellaneous compounds
MONOTERPENES AND SESQUITERPENES IN THE HEADSPACE VOLATILES FROM INTACT PLANTS OF PSEUDOGNAPHALIUM VIRA VIRA, P. HETEROTRICHIUM, P. CHEIRANTHIFOLIUM AND P. ROBUSTUM: THEIR INSECT REPELLENT FUNCTION
URZúA,ALEJANDRO;
Boletín de la Sociedad Chilena de Química , 2002, DOI: 10.4067/S0366-16442002000200005
Abstract: thirty-seven monoterpenes and sesquiterpenes have been identified in the headspace of four pseudognaphalium spp. the major compound identified was a-(z)-ocimene [1]: 87.0% in p. vira vira, 45.0% in p. heterotrichium, 41.0% in p. cheiranthifolium and 76.0% in p. robustum. other major components were germacrene d [2] (6.4%) in p. vira vira, b-phellandrene [3] (45.4% and 27.4%) in p. heterotrichium and p. cheiranthifolium, germacrene b [4](17.9%) in p. cheiranthifolium and (e)-3,7,11-trimethyl-1,6,10-dodecatriene-3-ol [5] (9.5%) in p. robustum. the insect repellent function of the mixture of volatile compounds is discussed
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