252 resultados para Immaculada Concepció


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A broad and simple method permitted halide ions in quaternary heteroaromatic and ammonium salts to be exchanged for a variety of anions using an anion exchange resin (A− form) in non-aqueous media. The anion loading of the AER (OH− form) was examined using two different anion sources, acids or ammonium salts, and changing the polarity of the solvents. The AER (A− form) method in organic solvents was then applied to several quaternary heteroaromatic salts and ILs, and the anion exchange proceeded in excellent to quantitative yields, concomitantly removing halide impurities. Relying on the hydrophobicity of the targeted ion pair for the counteranion swap, organic solvents with variable polarity were used, such as CH3OH, CH3CN and the dipolar nonhydroxylic solvent mixture CH3CN:CH2Cl2 (3:7) and the anion exchange was equally successful with both lipophilic cations and anions.

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En este proyecto se ha calculado la huella de carbono parcial, es decir, únicamente se ha tenido en cuenta la movilidad y la energía usada en la vivienda. Se ha aplicado la metodología creada por Mathis Wackernagel y William Rees en 1997 para el cálculo de la huella ecológica. Diferentes barrios distribuidos a distintas distancias del CBD (Central Business District) de Concepción (Chile), han sido los objetos de estudio de la Huella de Carbono y en concreto se ha focalizado la atención en dos barrios de bajas rentas (Cerro Centinela y Pedro de Valdivia Bajo). En ellos se ha propuesto mejoras tanto ecológicas como sociales para aumentar la calidad de vida de los vecinos.

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Un estudi demostra que els fets traumàtics que el pare hagi pogut viure un temps abans de la concepció d"un fill afecten el creixement del futur nadó. La causa se situaria en els canvis epigenètics provocats pel trauma en qüestió, que afectarien els espermatozous

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The Zein-2 component named Zc 1 corresponds to a storage protein of an apparent M.W. of 16 kDa present in maize endosperm.

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The Zein-2 component named Zc 1 corresponds to a storage protein of an apparent M.W. of 16 kDa present in maize endosperm.

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A genomic clone (p268c) coding for the 28 kD storage protein Zc2 from maize endosperm has been isolated and sequenced.

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A genomic clone (p268c) coding for the 28 kD storage protein Zc2 from maize endosperm has been isolated and sequenced.

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Podeu consultar la Setena trobada de professorat de Ciències de la Salut completa a: http://hdl.handle.net/2445/43352

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Podeu consultar la Setena trobada de professorat de Ciències de la Salut completa a: http://hdl.handle.net/2445/43352

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L’ús que fan els estudiants de segon cicle d’ESO de la ciutat de Barcelona de les diferents eines de Facebook, per a crear i consumir continguts generats per peers. Quines motivacions hi ha rere l’ús de cada eina i les relacions entre l’ús d’unes determinades eines per part dels usuaris i la concepció que tenen d’ells mateixos pel què fa a la seva popularitat.

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The existence of a new class of inclined periodic orbits of the collision restricted three-body problem is shown. The symmetric periodic solutions found are perturbations of elliptic kepler orbits and they exist only for special values of the inclination and are related to the motion of a satellite around an oblate planet

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Objectives: To analyze the role of the capsular type in pneumococci causing relapse and reinfection episodes of acute exacerbation in COPD patients. Methods: A total of 79 patients with 116 recurrent episodes of acute exacerbations caused by S. pneumoniae were included into this study (1995–2010). A relapse episode was considered when two consecutive episodes were caused by the same strain (identical serotype and genotype); otherwise it was considered reinfection. Antimicrobial susceptibility testing (microdilution), serotyping (PCR, Quellung) and molecular typing (PFGE/MLST) were performed. Results: Among 116 recurrent episodes, 81 (69.8%) were reinfections, caused by the acquisition of a new pneumococcus,and 35 (30.2%) were relapses, caused by a pre-existing strain. Four serotypes (9V, 19F, 15A and 11A) caused the majority (60.0%) of relapses. When serotypes causing relapses and reinfection were compared, only two serotypes were associatedwith relapses: 9V (OR 8.0; 95% CI, 1.34–85.59) and 19F (OR 16.1; 95% CI, 1.84–767.20). Pneumococci isolated from relapses were more resistant to antimicrobials than those isolated from the reinfection episodes: penicillin (74.3% vs. 34.6%, p,0.001), ciprofloxacin (25.7% vs. 9.9%, p,0.027), levofloxacin (22.9% vs. 7.4%, p = 0.029), and co-trimoxazole (54.3% vs. 25.9%, p,0.001). Conclusions: Although the acquisition of a new S. pneumoniae strain was the most frequent cause of recurrences, a third ofthe recurrent episodes were caused by a pre-existing strain. These relapse episodes were mainly caused by serotypes 9V and 19F, suggesting an important role for capsular type

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The main objective of this article is to assess the risk factors and the types of surface for the development of pressure ulcers (PU) on critical ill patients in an Intensive Care Unit (ICU)

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Dins del projecte de recerca I+D Impressió expandida: repercussions dels mitjans digitals en el context de l’art imprès, amb codi: HUM 2007-64757/ARTE i finançat pel Ministerio de Ciencia yTecnologia, l’any 2007 es va constituir un sub-grup que, sota el nom d’Ars Combinatoria, hatreballat en la investigació de la impressió digital sobre diferents suports.Aquest equip investigador està format per les professores M.Mercè Casanovas, Cristina Pastó iEva Vila (col·laboradora) , totes elles vinculades a la pràctica i la docència del gravat, la litografia ila serigrafia .L’interès i la dedicació per aquestes disciplines ha anat ampliant-se i creixent amb l’aportació delsmitjans digitals, que han suposat un canvi en el format, en el projecte i en la concepció de l’obra.Per dur a terme aquesta recerca, hem rebut el suport de l’empresa barcelonina EGM Laboratoriscolor, especialitzada en la impressió digital d’alta resolució.Des d’aleshores s’ha seguit una investigació profunda sobre les diferents possibilitats de laimpressió digital damunt suports convencionals i no convencionals. Tota una recerca que, fins al moment, s’ha concretat en tres exposicions, dues de col·lectives i una d’individual, que mostren els resultats obtinguts.