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Publications (30)
Introducción:
La aparición y diseminación de Enterobacterales resistentes a carbapenémicos ha generado un gran impacto en las infecciones asociadas a la atención de salud en el mundo. Recientemente, en Chile se detectó un brote por Klebsiella pneumoniae productora de carbapenemasas tipo oxacilinasas (OXA) de la subfamilia tipo OXA-48, reportándose...
All our knowledge about Saturn and its icy ring system comes from the data obtained during the flybys of Pioneer 11, Voyager 1, Voyager 2 and Cassini, as well as from the observations carried out by Hubble Space Telescope. The discovery of water vapor plumes at the poles of Enceladus and other compelling evidence of the existence of subsurface wate...
Brucella abortus, B. canis, and pathogenic Leptospira are zoonotic pathogens that infect
humans, as well as domestic and wild animals. In wild canids, they may affect their fertility and reproduction, threatening their conservation. Wild canids play a crucial role in the environment as meso- and top-predators and environmental sentinels for zoonoti...
Q fever and rickettsial diseases occur throughout the world and appear to be emergent zoonoses in Chile. The diagnosis of these diseases is currently uncommon in Chile, as their clinical presentations are non-specific and appropriate diagnostic laboratory assays are of limited availability. During a recent outbreak of undiagnosed human atypical pne...
With this special edition of the Strategic Design Research Journal (SDRJ) we want tocontribute to the emerging debate on Design and Territory, presenting a selection of paperssubmitted on the occasion of the 7th International Forum of Design as a Process, organizedby Latin Network for The Development of Design Processes and the Faculty of Engineeri...
The aim of the paper is to present a focus on the relationship between Design and Territory, framing it in the contemporary debate about the Anthropocene and orienting the discussion in the direction of emergencies and conflicts concerning the evolution of our artificial world. After an overview about typical issues regarding the relationship betwe...
A technique for the aeroelastic solution of parachute decelerators is presented in this work. The methodology uses empirical aerodynamics, based on a filling-time inflation model and Ludtke's area law, coupled to two explicit structural solution approaches. A mass-spring-damper technique allows solving the deployment of the system (when the grid is...
An efficient method for the aeroelastic analysis of wind effects on inflatable structures is presented. The solution scheme is staggered and uses an explicit finite-element structural solver and potential flow aerodynamics. In order to take into account the essential features of the flow around blunt-shaped structures, a physics-based correction of...
We investigated exposure to Brucella canis and Leptospira spp. in sera from 56 canids sampled between 2008 and 2012 in Tierra del Fuego, Chile. No seropositives to B. canis were found. We detected antibodies against Leptospira spp. in Fuegian culpeo fox (Pseudalopex culpaeus lycoides; 20%), chilla foxes (Pseudalopex griseus; 8%), and dogs (Canis lu...
Introducing the cultural and historical background of the relationship between design and anticipation is the aim of this chapter. It first provides an overview of the topic describing the various phases and connotations of this connection in design evolution. Then it discusses the creation of a culture of anticipation in contemporary European, and...
We present a simulation tool for transient events in complex hydraulic networks. The code includes modelling of the transport of suspended cuttings in near-vertical wells. An unstructured finite volume formulation with implicit time integration has been chosen. The unconditional stability of the integrator makes the method suitable for the simulati...
An a-posteriori error estimate with application to inviscid compressible flow problems is presented. The estimate is a surrogate measure of the discretization error, obtained from an approximation to the truncation terms of the governing equations. This approximation is calculated from the discrete nodal differential residuals using a reconstructed...
Advanced Design is a systemic practice of continuous innovation, inter-disciplinary, capable of undertaking complex projects thanks to its capacity to combine instruments and competencies (Celaschi, 2010) and which acts at the Front Ends of Innovation (Cooper and Kleinschmidt, 1986; Smith and Reinertsen, 1991; Koen, 2002), finding opportunities and...
El Diseño Avanzado es una práctica orientada a la búsqueda y visualización de oportunidades de de innovación futuras, una práctica que si se realiza sistemáticamente, crea corredores de innovación para las empresas que trabajan bajo el concepto de innovación contínua.Estas prácticas han sido documentadas, en especial cuando se trata de su aplicació...
The aim of this research was to statistically analyze the association between antimicrobial susceptibility/resistance to erythromycine, gentamicin, ciprofloxacin, and tetracycline and 11 virulence genes associated with adherence, invasion, and cytotoxicity in 528 isolates of Campylobacter coli and Campylobacter jejuni obtained from retail meat and...
SUMMARY Clostridium difficile infection has gained importance in recent years as a result of the rapid spread of epidemic strains, including hypervirulent strains. This study reports the molecular epidemiology of C. difficile obtained from hospitalized patients in Chile. Seven hundred and nineteen isolates of toxigenic C. difficile from 45 hospital...
Purpose
– The purpose of this paper is to describe a set of simple yet effective, numerical method for the design and evaluation of parachute-payload system. The developments include a coupled fluid-structural solver for unsteady simulations of ram-air type parachutes. The main features of the computational tools are described and several numerical...
The recent attention given to advanced design is due to important mutations and characteristics within the international context in which process design operates, increasing the complexity of the production and consumer systems, accelerating the processes of change and increasing the need for sustainable processes. All this can be attributed to a c...
In this work, the finite point method is applied to the solution of high-Reynolds compressible viscous flows. The aim is to explore this important field of applications focusing on two main aspects: the easiness and automation of the meshless discretization of viscous layers and the construction of a robust numerical approximation in the highly str...
A comparative assessment of the Finite Point Method (FPM) is presented. Using a wing-fuselage configuration under transonic inviscid flow conditions as reference test case, the performance of the FPM flow solver is compared with an equivalent edge-based Finite Element (FEM) implementation. Efficiency issues have discouraged practical application of...
SUMMARYA finite point method for solving compressible flow problems involving moving boundaries and adaptivity is presented. The numerical methodology is based on an upwind‐biased discretization of the Euler equations, written in arbitrary Lagrangian–Eulerian form and integrated in time by means of a dual‐time steeping technique. In order to exploi...
The design and evaluation of parachute-payload systems is a technology field in which numerical analysis tools can make very important contributions. This work describes a new development from CIMNE in this area, a coupled fluid-structural solver for unsteady simulations of ram-air type parachutes. For an efficient solution of the aerodynamic probl...
The PUMI flow solver has been developed at CIMNE in order to address the need for fast solutions of the flow field around complex geometries. Nowadays calculations involving a number of cells on the order of tens of millions are performed routinely. PUMI was created to deal with this kind of large-scale problem using modest hardware, therefore spec...
The wing model deformation due to the twin-sting support mechanism, with an emphasis on wing torsion and bending is proposed. Three different support configurations have been analyzed to evaluate their effect on model deformation. These shall be referred to as outboard, intermediate, and inboard boom positions. Some cryogenic-wind-tunnel entries we...
A methodology for error estimation and mesh adaptation for finite element (FE) analysis of incompressible viscous flow is presented. The error estimation method is based on the evaluation of the energy rate (the power) of the FE residuals of the momentum and incompressibility equations. The residuals are computed using recovered values of the deriv...
The paper describes a new residual-based procedure for error estimation and mesh adaptivity of the finite element solution for Navier-Stokes incompressible flows using a finite calculus formulation. The error estimation is based on the power of the residuals of the momentum and the mass balance equations. Details of the error estimation and the mes...