Browsing by Author "Ramirez, C."

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    Dexmedetomidine metabolic clearance is not affected by fat mass in obese patients
    (2018) Rolle, A.; Paredes, S.; Cortínez Fernández, Luis Ignacio; Anderson, B. J.; Quezada Sanhueza, Nicolás; Solari, S.; Allende, Fidel; Torres, J.; Cabrera, D.; Contreras, V.; Carmona, J.; Ramirez, C.; Oliveros, A. M.; Ibacache Figueroa, Mauricio Enrique
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    Firm, industry and corporation effects revisited: a mixed multilevel analysis for Chilean companies
    (ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD, 2010) Tarzijan, J.; Ramirez, C.
    The relative importance of the corporate, industry and firm effects on business performance has been studied profusely in the literature. Until now, little has been said about the nested structure of the problem. The multilevel analysis appears as a good alternative over the approaches used so far to better understand this phenomenon. This article analyses the significance of the aforesaid effects on Chilean firms and assesses the impact of various regressors on residual variances. The export intensity of firms and industries proved to have a significant impact on the estimated industry effect, making the industry-related variance statistically not different from zero. However, the industry's influence did not totally disappear, because the effect of export intensity on firms' profitability depends on the industry to which the firm belongs. Moreover, firm size turns out to be significant and positively associated with firm's return, which can be evidence of economies of scale or more efficient processes as a company grows in size.
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    Inhibition of Wild Enterobacter cloacae Biofilm Formation by Nanostructured Graphene- and Hexagonal Boron Nitride-Coated Surfaces
    (2019) Zurob, E.; Dennett, G.; Gentil, D.; Montero-Silva, F.; Gerber, U.; Naulin Gysling, Pamela Alejandra; Gómez Zúñiga, Andrea Verónica; Fuentes, R.; Lascano, S.; Barrera Rojas, Nelson Patricio; Rodrigues da Cunha, T.H.; Ramirez, C.; Henriquez, R.; Del Campo, V.; Wilkens, M.; Parra, C.
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    Microstructure analysis on pre-treated apple slices and its effect on water release during air drying
    (ELSEVIER SCI LTD, 2011) Ramirez, C.; Troncoso, E.; Munoz, J.; Aguilera, J. M.
    Microstructural studies have played an important role in the comprehensive understanding of some food phenomena that occur during drying processes. The aim of this work was to study the effect of four pre-treatments (immersion in boiling water, vacuum impregnation, freezing/thawing, and uni-axial compression) on apple microstructure characterized by cell cavities size parameter and how the changes induced by these pre-treatments can affect the water loss rate during air drying. The quantitative structure analysis showed that freezing/thawing and compression pre-treatments caused more damage on the apple structure, yielding larger cell cavities in comparison to vacuum impregnation and immersion in boiling water and control. Apple slices that were frozen/thawed, compressed and immersed in boiling water displayed the higher drying rates and diffusivity coefficients than the vacuum impregnated and control samples. These results allow concluding that disruption of the cell walls can be considered as a factor that affects the drying rate. (C) 2011 Elsevier Ltd. All rights reserved.