Search results for "RAV"

Photocatalytic oxidation mechanism of benzonitrile in aqueous suspensions of titanium dioxide

2007

Abstract The photocatalytic oxidation of benzonitrile was carried out in aqueous suspensions (pH 11) of commercial polycrystalline TiO 2 (Merck and Degussa P25) irradiated by ultraviolet light. The rate of decomposition was dependent on the concentration of benzonitrile and followed a pseudo-first order kinetics. The complete mineralization of a 0.70 mM benzonitrile solution was achieved in ca. 8 h by using TiO 2 Degussa P25, whereas the substrate was only partially mineralized even after 14 h of irradiation in the presence of TiO 2 Merck. The final oxidation products were carbonate and nitrate. The appearance and the evolution of organic and inorganic intermediate species were also investi…

Vida, penitencia y milagros de nuestro gloriosissimo padre melifluo San Bernardo / traduzida de latin en romance por fray Iuan Aluaro ... ; Ay una do…

1597

Errors tipogr. en la pag. - Caplletres

Cofrades y cofradesas del insigne Doctor Melifluo San Bernardo de la Santa Iglesia Catedral

Sense text Segons el "Repertorio de grabados españoles en la Biblioteca Nacional" de Elena Páez, aquest grav. xil. mallorquí, Melchior Guasp, va fer les seues obres conegudes entre 1753 i 1772 El grav. xil. "M. Guasp In." El full orlat

Chromatographic separation of chlorthalidone enantiomers using β-cyclodextrins as chiral additives

2000

Different beta-cyclodextrins have been tested as chiral additives in the mobile phase for the chromatographic analysis of chlorthalidone enantiomers in a C18 LiChrospher (125 x 4 mm I.D.) column. The effect on enantioresolution of different parameters was studied: composition of the mobile phase (percentage of organic solvent, type of buffer and pH), mobile phase flow-rate, and type and concentration of beta-cyclodextrin. A 25:75 mixture of methanol and 0.1 M phosphate buffer, pH 4, containing 2% triethylamine (v/v), and 12.5 mM beta-cyclodextrin, at a flow-rate of 0.8 ml/min, was found to be the best option for the resolution of chlorthalidone enantiomers. Under such conditions, linear cal…

In-flight calibration of the ROSAT HRI ultraviolet sensitivity

2000

Comparing measured and estimated count rates of a few selected sample stars, we confirm the validity and provide the in-flight calibration of the ROSAT HRI UV/visible effective area model in Zombeck et al. The count rate estimates for Betelgeuse derived with this model are in agreement with the measured HRI upper limit. This result is also confirmed in an erratum by Berghöfer et al. aimed at revising their previous calculation, which was overestimated by more than 2 orders of magnitude. Adopting this ROSAT HRI UV/visible effective area model and measured UV/visible spectra of a set of sample stars covering the range of Teff 3000-40,000 K, we have built the calibration curves to estimate UV/…

Photocoagulation laser et bevacizumab intravitréen dans la télengectasie rétinienne idiopatique:à propos d'un cas.

2008

Bevacizumab intravitreale nel trattamento dell'edema maculare in corso di Retinopatia Diabetica Proliferante

2011

Test-retest reliability of a new self reported comprehensive questionnaire measuring frequencies of different modes of adolescents commuting to schoo…

2009

Published version of an article from the journal: International Journal of Behavioral Nutrition and Physical Activity Article available from: http://www.ijbnpa.org/content/6/1/68 Background: Studies assessing active commuting to school usually use simple questionnaires, and often is mode of commuting reported with a single questionnaire item only. The purpose of the present study is to report the test-retest reliability of a newly developed comprehensive questionnaire on active commuting to school and work among 6thgrade school children and their parents in Norway. Methods: A total of 106 pupils and 77 parents completed a questionnaire two times, 14 days apart. The questionnaire consisted o…

Bien-être au travail et qualité des services fournis aux usagers : une recherche-action à l’intérieur d’un centre hospitalier italien.

2011

Depuis le milieu des années 1970 en Europe, un grand nombre d’écrits scientifiques ont investigué la relation bienêtre-travail en se concentrant sur les rapports entre les facteurs-clés qui apparaissent déterminants pour la qualité de vie au travail: la réalisation et le développement professionnel, les relations sociales et professionnelles, l’environnement physique, le contenu et l’organisation du travail. Ces facteurs jouent un rôle très important à l’intérieur des milieux socio-sanitaires : car ils ont un impact considérable sur la satisfaction des professionnels de santé et sur leurs nivaux de stress et d’épuisement, ils conditionnent la qualité de la relation avec le malade en influen…

Le Moyen Âge vu d'ailleurs II. Historiografia e pesquisas recentes

2004

Pascual Martinez Sopena Tradiciones y tendencias en el medievalismo españolJudite A. Ginçalves de Freitas Os caminhos da história do poder no medievalismo português (ca. 1975-ca. 2000)Pablo Ubierna Literatura profética y poder en Byzancio durante los siglos VIII al XEleonora Dell'Elicine Discurso, gestos y comunicación en la liturgia visigoda (589-711)Daniel Russo Histoire de l'art et iconographieMaria Cristina Pereira Os pilares do claustro de MoissacJean-Claude Schmitt Problèmes de l'image médiévale pour l'historien médiévisteMarta Madero Causa, creencia y testimonios. La prueba judicial en Castilla durante el siglo XIIIPaola Miceli Entre memoria y olvidio. El tiempo de la costumbre en el…