Repositorio Académico de la Universidad de Chile: Recent submissions
Now showing items 35821-35840 of 98765
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(Elsevier, 2017)In order to study the effect of electron-surface scattering in gold ultrathin films (∼10 nm), we have prepared a set of Au samples on mica on top of a chromium seedlayer (<1 nm). Chromium is added as a metallic surfactant ...
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(Academic Press, 2017)In this paper, ordinary and exponential dichotomies are defined in differential equations with equations with piecewise constant argument of general type. We prove the asymptotic equivalence between the bounded solutions ...
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VLT spectroscopic analysis of HH 202. Implications on dust destruction and thermal inhomogeneities (Universidad Nacional Autonoma de Mexico, 2017)We present a long-slit spectroscopic analysis of Herbig-Haro 202 and the surrounding gas of the Orion Nebula using data from the Very Large Telescope3. We determined the spatial variation of its physical conditions and ...
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(Springer, 2017)We report the first absolute dating for rock paintings by Andean hunter-gatherer groups. Analysis by Raman spectrometry of remains of black paintings from the center-north of Chile (30° lat. S) allows for the identification ...
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(Blackwell, 2017)Along a subduction zone, great megathrust earthquakes recur either after long seismic gaps lastingseveral decades to centuries or over much shorter periods lasting hours to a few years when cascadingsuccessions of earthquakes ...
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(Wiley, 2017)In this study, synergistic effects of crosslinking and chitosan molecular weight on the microstructure, molecular mobility, thermal, and sorption properties of porous chitosan/ gelatin/ hyaluronic acid hybrid foams are ...
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(Elsevier, 2017)Background and Objective: Published algorithms for classification of human sperm heads are based on relatively small image databases that are not open to the public, and thus no direct comparison is available for competing ...
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(Springer, 2017)This paper is devoted to the study of optimal solutions of symmetric coneprograms by means of the asymptotic behavior of central paths with respect to a broadclass of barrier functions. This class is, for instance, larger ...
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(Springer, 2017)A theory of economic equilibrium for incomplete financial markets in general real assets is developed in a new formulation with currency-denominated prices. The "goods" are not only commodities, and they can influence ...
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(Wiley, 2017)When dealing with practical problems of stress-strength reliability, one can work with fatigue life data and make use of the well-known relation between stress and cycles until failure. For some materials, this kind of ...
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(Elsevier, 2017)In this study, synthesis of novel binary chitosan-SnO2nanocomposites is reported. Different physical and chemical techniques were used to characterize and analyze the characteristics of the chitosan-SnO2nanocomposites as ...
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(IEEE, 2017)Model-driven Engineering (MDE) is a paradigmthat promotes the use of models and automatic model transfor-mations to handle complex software developments. Model trans-formations promise to reduce the effort ...
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Isogeometric boundary element methods for three dimensional static fracture and fatigue crack growth (Elsevier, 2017)We present a novel numerical method to simulate crack growth in 3D, directly from the Computer-Aided Design (CAD) geometry of the component, without any mesh generation. The method is an isogeometric boundary element ...
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(IEEE, 2017)Energy independence is a wireless device quality that demands the utmost exigency. Energy harvesting devices (EHD) alleviate the energy constraints demanded by these nodes and with the use of protocols, such as variable ...
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(Springer, 2017)The plurigaussian model is used in miningengineering, oil reservoir characterization, hydrology andenvironmental sciences to simulate the layout of geologicaldomains in the subsurface, while reproducing their spatialcontinuity ...
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(Elsevier, 2017)Rural education systems have higher barriers to inclusion than their urban counterparts. An observational, analytic cross-sectional study was performed. A self-report survey was collected from inclusive program coordinators, ...
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(Elsevier., 2017)The near-shore surface mesoscale atmospheric circulation in the upwelling systems off Peru and Chile is influen-tial on the Sea Surface Temperature through Ekman transport and pumping. There has been a debate whether ornot ...
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(Springer, 2017)About 15% of the world’s population suffers from some kind of disability. Inaddition to experiencing high rates of poverty, exclusion and lack of access to education,employment, health care, legal support and other services, ...
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(Institute of Electrical and Electronics Engineers Inc., 2017)Special protection schemes (SPSs) are an efficient alternative to increase the flexibility in the operation of power systems. The implementation of SPSs is often motivated by technical rather than economic reasons. The aim ...
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(Wiley-VCH Verlag, 2017)In this paper we derive the full analytical solution for the problem of a circular micropolar inhomogeneity in an infinite micropolar plate subjected to a remote uni-axial tension. The interface between the inhomogeneity ...
