Escenario actual de la resistencia a la colistina mediada por plásmidos en América Latina

Colistin resistance can occur by chromosomal mutations and by acquisition of plasmid-carrying determinants, mainly mcr-1. In the recent years, we have observed the outburst of this resistance gene in our region. Due to the risk of the rapid dissemination of mcr-1, this finding has worried and alerted different actors from the health field and has become one of the most prolific topics. Our review compiles available reports of well-documented mcr-1-positive strains of Enterobacteriaceae, obtained from different samples in Argentina and other countries of Latin America. Furthermore, it addresses the association of mcr-1 with ESBL resistance markers and outlines the platforms involved in their dissemination.Fil: Quiroga, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones en Microbiología y Parasitología Médica. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones en Microbiología y Parasitología Médica; ArgentinaFil: Nastro, Marcela. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; ArgentinaFil: Di Conza, José Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentin

Design and manufacturing of integrated optical devices in visible spectrum = Diseño y fabricación de dispositivos integrados de guías de onda en espectro visible

In this project we aim at addressing the study of the full manufacturing process of a photonic integrated circuit, from the initial stage of components design to the tests required to ensure its proper functioning. Its most innovative aspect compared to the existing technology is that the wavelength used belongs to the visible light spectrum. Thus the dimensions of the waveguides have to be significantly reduced. For this reason, the analysis of new manufacturing protocols, using new materials and new techniques, is required. In addition, the current methods will be also modified in order to be optimized for our scenario. In a first step, design and simulation of the desired devices were conducted so that a set of different configurations can be approached. After that, the integration of the maximum number of these configurations was settled in a chromium mask design. This mask was then used in the photolithography process to harden SU-8 photoresist over a silicon substrate. Good fabrication results were obtained, being able to reach waveguides structures of 0.5 μm thick and 1.5 μm wide. The final chips were characterized in a dark room with two different laser input and proper light guidance was demonstrated as well as output switching

Presentación Anuario de Derechos Humanos 2010

Tenemos el agrado de presentar el sexto Anuario del Centro de Derechos Humanos de la Facultad de Derecho de la Universidad de Chile, consagrado desde su primer número al análisis de los más relevantes desarrollos doctrinarios, legales y jurisprudenciales en el campo de los derechos humanos y áreas afines, que han tenido lugar en el año precedente en el plano nacional e internacional.  

Consumerism: A Challenge for Christian Leadership?

This article is motivated by an academic work and a field research project developed by Hugo E. Quiroga (2012; personal communication, 2015) on oneomania as a challenge for christian leadership. Our intention is more to raise questions than to provide easy-sounding answers. The term oneomania may not be well known in theory, but its practical effects are recognized around the world. Oneomania, from the Greek onéo = to buy + mania = insanity, mental disorder (Taylor, 1950), is the scientific and technical term for the disease of consumerism, for the compulsive desire to shop, which is a progressive addiction to shopping and going into debt due to buying unnecessary things. It is also referred to as compulsive shopping, compulsive spending, shopping addiction, shopaholism, and Compulsive Buying Behavior (CBB). In Brazil, where we live, it is called Compulsive Buying Disorder (CBD)

Artifact Development for the Prediction of Stress Levels on Higher Education Students using Machine Learning

Stress is an adaptative reaction of an organism, human or not, to the demands of fitting in an environment (Kav Vedhara, 1996). When stress originates in an educational context, it is common to refer to it as a student and their mechanisms to adapt and cope with the academic demand. All humans experience stress during their lifetime, but when this overwhelmed feeling is prolonged can affect human behaviour and the ability to deal with physical and emotional pressure, having, as a result, a different range of problems. It is important for higher-level educations institutions, such as colleges and universities, to be aware and have a deep knowledge of the levels of academic stress in their students

Mobile application to travel the world using virtual reality and machine learning

This research intends to make travel and culture an accessible possibility for all. With a phone and a VRHeadset, people will have the opportunity to see some of the most amazing scenes in the world and learn about the history and culture of famous landmarks without leaving the comfort of their own homes

Effect of Temperature on Biohydrogen and Biomethane Productions by Anaerobic Digestion of Sugar Beet by-Products

This work analyzes the effect of temperature on the anaerobic digestion of sugar beet by-products for both biohydrogen and biomethane production. The findings demonstrate that the anaerobic process was significantly affected by the increase in temperature from mesophilic to thermophilic or hyper-thermophilic conditions. Therefore, it was found that the mesophilic temperature was more suitable for the anaerobic digestion of sugar beet by-products, using either the raw feedstock or the pretreated feedstock at higher temperatures. The specific production of biohydrogen from thermophilic acidogenic digester was 1.7 fold higher than that obtained from the hyper-thermophilic one. Moreover, when raw feedstock was used in single stage digesters, a methane production rate of 0.55 LCH4/Lr*d was obtained from the mesophilic digester, which was 45% higher than that of the thermophilic one. It has been observed that the increase in temperature led to a high accumulation of volatile and long chain fatty acids, inhibiting and slowing down the anaerobic process