494 resultados para Venenos de araña


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Programa de doctorado: Clí­nica y Terapéutica

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Programa de doctorado: Ingeniería ambiental y desalinización

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Programa de Doctorado: Tecnología de las telecomunicaciones

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Doctorado en Análisis Económico. Programa en Análisis Económico Aplicado

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Máster Universitario en Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería (SIANI)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

[EN] New TiO2 catalysts have been synthesised by means of a sol–gel method in which aggregates have been selected before thermal treatment. Sieving and calcination temperature have been proved to be key factors in obtaining catalysts with greater photoactivity than that of Degussa P-25. These new catalysts have been characterized by means of transmission electron microscopy (TEM), BET surface area, diffuse reflectance spectroscopy (DRS), UV–vis spectroscopy, Fourier transformed infrared (FTIR) and X-ray diffraction (XRD). The different parameters studied were compared to those obtained from two commercial catalysts (Degussa P-25 and Hombikat-UV100). The photocatalytic efficiency of the new catalysts was evaluated by the degradation of various phenolic compounds using UV light (maximum around 365 nm, 9mW). The catalyst sieved and calcinated at 1023 K, ECT-1023t, showed phenol degradation rates 2.7 times higher than those of Degussa P-25. Also in the degradation of different phenolic compounds, this catalyst showed a higher activity than that of the commercial one. The high photoactivity of this new catalyst has been attributed to the different distribution of surface defects (determined from FTIR studies) and its increased capacity to yield H2O2

Relevância:

10.00% 10.00%

Publicador:

Resumo:

[EN] OBJECTIVES: To assess the usefulness of clinical findings, nerve conduction studies and ultrasonography performed by a rheumatologist to predict success in patients with idiopathic carpal tunnel syndrome (CTS) undergoing median nerve release. METHODS: Ninety consecutive patients with CTS (112 wrists) completed a specific CTS questionnaire and underwent physical examination and nerve conduction studies. Ultrasound examination was performed by a rheumatologist who was blind to any patient's data. Outcome variables were improvement >25% in symptoms of the CTS questionnaire and patient's overall satisfaction (5-point Likert scale) at 3 months postoperatively. Success was defined as improvement in both outcome variables. Receiver operating characteristics (ROC) curves and logistic regression analyses were used to assess the best predictive combination of preoperative findings. RESULTS: Success was achieved in 63% of the operated wrists. Utility parameters and area under the ROC curve (AUC) for individual findings was poor, ranging from 0.481 of the nerve conduction study to 0.634 of the cross-sectional area at tunnel outlet. Logistic regression identified the preoperative US parameters as the best predictive variables for success after 3 months. The best predictive combination (AUC=0.708) included a negative Phalen maneuver, plus absence of thenar atrophy, plus less than moderately abnormalities on nerve conduction studies plus a large maximal cross-sectional area along the tunnel by ultrasonography. CONCLUSION: Although cross-sectional area of the median nerve was the only predictor of success after three months of surgical release, isolated preoperative findings are not reliable predictors of success in patients with idiopathic CTS. A combination of findings that include ultrasound improves prediction.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Programa de doctorado: Ingeniería ambiental y desalinización

Relevância:

10.00% 10.00%

Publicador:

Resumo:

[ES] El turismo es una actividad económica que utliza intensivamente recursos naturales. La relación del turismo con estos recursos es dual, ya que el propio devenir de la industria puede conducir a un deterioro de los mismos. En esta dinámica de la interacción del turismo y el medio ambiente, el fenómeno del cambio climático consitutye un reto para el futuro del turismo, debido a que puede afectar a los recursos naturales sobre los que se ha sustentado su desarrollo tradicional en la mayoría de los destinos, produciéndose por tanto una degradación de los atractivos turísticos que darán lugar a nuevos patrones tanto geográficos como estacionales en los turistas. Estos cambios en los flujos se producen como resultado de una modificación en la función de bienestar y satisfacción, producido como consecuencia de la transformación del hábitat donde se desempeña la experiencia vacacional. Esta modificación en las referencias de los turistas, pueden suponer pérdidas económicas. Por lo tanto, es necesario implementar políticas que disminuyan los impactos del cambio climático. El problema es la limitación de los recursos económicos, así como su distribución. Por eso hay que desarrollar políticas que permitan la obtención de un mayor número de recursos económicos. Para erllo es necesario el estudio de las preferencias de los turistas. Debido a que la oposición de los individuos a un pago para llevar a cabo políticas de lucha contra el cambio climático puede modificarse con un determinado diseño de éstas.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Programa de doctorado: Ingeniería Ambiental y Desalinización.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Programa de doctorado: Ingeniería ambiental y desalinización.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Máster en Economía del Turismo, Transporte y Medio Ambiente

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Directores: Sergio Moreno Gil y Jorge Enrique Araña Padilla. Programa de doctorado: Desarrollo integral e innovación de destinos turísticos