Browsing by Title Facultad de Ciencias
Now showing items 5618-5637 of 8181
-
(Universidad de Chile, 2005)
-
(Universidad de Chile, 2010)
-
(Institute of Physics Publishing, 2010)We present redshifts and optical richness properties of 21 galaxy clusters uniformly selected by their Sunyaev-Zel'dovich (SZ) signature. These clusters, plus an additional, unconfirmed candidate, were detected in a 178 ...
-
(AMER PHYSICAL SOC, 2012-01-31)We investigate numerically the effect of the competition of disorder, nonlinearity, and boundaries on the Anderson localization of light waves in finite-size, one-dimensional waveguide arrays. Using the discrete ...
-
(American Chemical Society, 2018)© 2018 American Chemical Society. Antimony and bismuth «111» layered perovskites have recently attracted significant attention as possible, nontoxic alternatives to lead halide perovskites. Unlike lead halide perovskites, ...
-
(AMER INST PHYSICS, 2008-07-21)We describe a simple method to control a known unstable periodic orbit UPO in the presence of noise. The strategy is based on regarding the control method as an optimization problem, which allows us to calculate a ...
-
(American Society of Agricultural and Biological Engineers, 2005)This work reports on the determination of the optimal operating conditions for an optical ring sensor system as a first step in its use for fruits and vegetable sizing. The system was comprised of a singulator which fed ...
-
(Universidad de Chile, 2010)El estudio de las redes complejas ha sido de gran interés en este ultimo tiempo puesto que son capaces de describir una variedad importante de fenómenos. En particular, en este trabajo estudiaremos aquellos fenómenos que ...
-
(Universidad de Chile, 2016)
-
(Universidad de Chile, 2020-03)Los fármacos antitumorales han presentado una creciente utilización durante los últimos treinta años debido a que, por factores genéticos y medio ambientales, es cada vez más frecuente la aparición de cáncer en la población ...
-
(Universisdad de Chile, 2009)Acidithlobacitus ferrooxidans es una bacteria Gram-negativa quimiolitotrofica que participa en el consorcio bacteriano de biolixivacion de minerales. La adherencia de los microorganismos al mineral es determinante en la ...
-
(Universidad de Chile, 1992)El objetivo de este trabajo es estudiar la factibilidad de hacer análisis de elementos trazas usando el método PIXE, orientado preferentemente el estudio de muestras biológicas. Esto se realiza usando las instalaciones y ...
-
(Universidad de Chile, 2002)El tratamiento de residuos líquidos requiere de soluciones eficientes, de bajo costo y limpias, como las de origen electrolítico. Uno de estos procesos es la electrocoagulación, en donde electrodos de hierro o aluminio, ...
-
(Universidad de Chile, 2022)Los fotorreceptores son moléculas que surgen como un mecanismo biológico de percibir la luz, provocada por cambios conformacionales que estas moléculas sufren en respuesta a diversas longitudes de onda. Su nivel de respuesta ...
-
Optimización paramétrica en renormalización perturbativa de sistemas clásicos de spin tipo ising (Universidad de Chile, 1986)
-
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2006-12)Chemical, electrochemical and flow variables were optimized to examine the effectiveness of the electrocoagulation process for the removal of copper, lead and cadmium. The electrochemical process, which uses electrodes of ...
-
(Elsevier, 2014)Stochastic volatility models have been widely studied and used in the financial world. The Heston model (Heston, 1993) [7] is one of the best known models to deal with this issue. These stochastic volatility models are ...
-
(Wiley, 2020)The bonding and antibonding character of individual molecular orbitals has been previously shown to be related to their orbital energy derivatives with respect to nuclear coordinates, known as dynamical orbital forces. ...
-
(2016)AimOrchidaceae is the most species-rich angiosperm family and has one of the broadest distributions. Until now, the lack of a well-resolved phylogeny has prevented analyses of orchid historical biogeography. In this study, ...
-
(Royal Soc., 2015)Orchids are the most diverse family of angiosperms, with over 25 000 species, more than mammals, birds and reptiles combined. Tests of hypotheses to account for such diversity have been stymied by the lack of a fully ...