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Alicia Alonso-Hernando,Rosa Capita,Miguel Prieto,Carlos Alonso-Calleja 한국미생물학회 2009 The journal of microbiology Vol.47 No.2
Information on the potential for acquired reduced susceptibility of bacteria to poultry decontaminants occurring is lacking. Minimal Inhibitory Concentrations (MICs) were established for assessing the initial susceptibility and the adaptative and cross-adaptative responses of four bacterial strains (Listeria monocytogenes serovar 1/2a, L. monocytogenes serovar 4b, Salmonella enterica serotype Typhimurium, and S. enterica serotype Enteritidis) to four poultry decontaminants (trisodium phosphate, acidified sodium chlorite -ASC-, citric acid, and peroxyacetic acid). The initial susceptibility was observed to differ among species (all decontaminants) and between Salmonella strains (ASC). These inter- and intra-specific variations highlight (1) the need for strict monitoring of decontaminant concentrations to inactivate all target pathogens of concern, and (2) the importance of selecting adequate test strains in decontamination studies. MICs of ASC (0.17±0.02 to 0.21±0.02 mg/ml) were higher than the U.S. authorized concentration when applied as a pre-chiller or chiller solution (0.05 to 0.15 mg/ml). Progressively increasing decontaminant concentrations resulted in reduced susceptibility of strains. The highest increase in MIC was 1.88 to 2.71-fold (ASC). All decontaminants were shown to cause cross-adaptation of strains between both related and unrelated compounds, the highest increase in MIC being 1.82-fold (ASC). Our results suggest that the in-use concentrations of ASC could, in certain conditions, be ineffective against Listeria and Salmonella strains. The adaptative and cross-adaptative responses of strains tested to poultry decontaminants are of minor concern. However, the observations being presented here are based on in vitro studies, and further research into practical applications are needed in order to confirm these findings.
Numerical investigation of truck aerodynamics on several classes of infrastructures
Alonso-Estebanez, Alejandro,del Coz Diaz, Juan J.,Rabanal, Felipe P.A lvarez,Pascual-Munoz, Pablo,Nieto, Paulino J. Garcia Techno-Press 2018 Wind and Structures, An International Journal (WAS Vol.26 No.1
This paper describes the effect of different testing parameters (configuration of infrastructure and truck position on road) on truck aerodynamic coefficients under cross wind conditions, by means of a numerical approach known as Large Eddy Simulation (LES). In order to estimate the air flow behaviour around both the infrastructure and the truck, the filtered continuity and momentum equations along with the Smagorinsky-Lilly model were solved. A solution for these non-linear equations was approached through the finite volume method (FVM) and using temporal and spatial discretization schemes. As for the results, the aerodynamic coefficients acting on the truck model exhibited nearly constant values regardless of the Reynolds number. The flat ground is the infrastructure where the rollover coefficient acting on the truck model showed lowest values under cross wind conditions (yaw angle of $90^{\circ}$), while the worst infrastructure studied for vehicle stability was an embankment with downward-slope on the leeward side. The position of the truck on the road and the value of embankment slope angle that minimizes the rollover coefficient were determined by successfully applying the Response Surface Methodology.
PARA UNA TEORIA METAFICCIONAL EN SARDUY
Mario Alonso Arango Morales 德成女子大學校 1997 德成女大論文集 Vol.28 No.-
본 논문에서는 쿠바작가 세베로 사르두이Severo Sarduy 작품에 의미를 부여하는 몇가지 특징을 다루었다. 이 특징들은 그이 작품 "Colibri"(1984)이후로부터 잘 드러나는 것으로, 특히 17세기 바로크에 작가가 미친영향과 라틴아메리카의 신바로코 미학에 대한 적용을 고찰하였다. 본 연구를 통하여 사르두이 작품의 조형적이고 회화적인 형상과 에로티즘, 기표의 우희에 대한 문학적 방법을 다루었다. 또한 특징적인 것으로 사르두이가 오늘날 사회에서 고발하는 잉여와 키츠(Kitch)에 대한 비평을 다루었다는 것이다. Al acercamos a la produccion literaria y ensayistica de Severo Sarduy nos encontramos con un trabajo de escritura bastante consciente, cuyos principios aplico a sus abras sobre todo en el nivel semantico composicional. Su universo ficcional jamas estuvo desligado de su propia biografla, a traves de el sus preocupaciones vitales personales, sociales e historicas entretejen una urdimbre de conceptos venidos de muchisimos campos del saber en un intento por aproximarse a esa realidad pluralmente barroca que es Latinoamerica. Sarduy es un hijo de la avidez conceptual, su escritura abigarrada, pintoresca y sensual se niega a una lectura frontal y austera, que en cambio se abre ante el lector como un abanico de efectos, Es una escritura hecha de puntadas que recuerdan otras tramas de discursos ya constituidos o haciendose, tramas de retazos que el lector reconstruye o que el autor muchas veces le propone como un incesante juego de asociaciones. Veremos a traves del presente trabajo algunos aspectos que dan sentido al universo discursivo del autor o a lo que podria denominarse el genotexto, es decir la sede de constitucion del sentido de su escritura, ejemplificados basicamente en su novela colibri. Y ?Por que Colibri de entre toda la variada produccion del autor, que va desde la cuentistica, la poetica, el teatro radiofonico, el ensayo y otras novelas? Son varias las razones, pero la escogencia tiene que ver con el caracter representativo de esta novela aparecida en 1984, pues en ella el autor vuelve a los problemas fundamentales de su creacion como frecuentemente lo ha rmarcado la critica. Esta novela que juega con la paradoga, el humor, la ambiguedad, los juegos de palabras, el idioma popular y hasta poetico algunas veces, se sirve de ellos para criticar y cuestionar el lenguaje en el seno mismo del texto, dando a la novela una inesperada dimension metalinguistica. Es decir, pone en practica una vision critica del sentido desde muchos codigos de referencias. De alli el caracter original de este texto en tanto que invencion critica y lo que ello supone en cuanto creaction: revision de la identidad y ejercicio libre de la imaginacion heterogenea. LA EXPLORACION DEL NOMBRE LA ENTRONIZACION DEL MODELO O LA AURIFICACION DE LA CARNE