“Toma‐La Ciudad”

In autumn 2013, an activist network in Guadalajara, Mexico, mounted a museum exhibition, carried out interventions in city streets, and organized various events to persuade urban dwellers and government officials to address problems in the metropolis. The mostly middle-class activists used the phrase “Toma-la Ciudad” (Take the City) to encourage urban dwellers to engage in organized civil society efforts that would have the potential to reshape Guadalajara. Based on ethnographic fieldwork among participating groups, this article introduces the concept of “intersubjective activism” and employs it as a means by which to analyze the uses of and references to sensory experiences of the city. By inciting empathic responses toward how others experience the city, activists sought to break down some of the barriers that characterize Mexico’s inequalities. They also appeared to have learned lessons from previous forms of activism in which violent protests did not achieve their desired goals.publishe

Experiences on analog circuit technology migration and reuse

This work deals with two aspects of the reuse and redesign of analog circuits. First, a method for technology migration of analog circuits, recently proposed by Galup-Montoro and Schneider (Proc. SBCCI2000, pp. 89-93, 2000), is validated experimentally in the redesign of a Miller OTA from a 2.4 /spl mu/m technology to a 0.8 /spl mu/m technology. In addition, the impact of the method on performance aspects of analog circuits not covered in the original proposal (slew rate and current mirror frequency response) is studied. As a second mechanism for allowing the reuse of analog circuits, the feasibility of the application of the reference bias current as a tuning parameter to customize the performance of an existing design to suit different applications is demonstrate

Ict applied to teach and learn english language in the eight grade of educational center Dr Eugenio Espejo.

The same evolution of information technologies in the context defined in the service society poses new challenge to education in the future as the collection and organization of information will become the dominant life activity for a significant portion of the population English Language Teaching. Language is widely published in order to developed competition cognitive, communicative, a concept that involves the expression, interpretation and negotiation of meaning in the interaction between 2 or more people or between a person and a text or oral. It should also contribute to the efficiency linguistic, ability to construct and reconstruct new knowledge. For this reason it is of vital importance to implement the ICT in the classroom, in this way to improve knowledge and management of different skills with the use of technology, we are sure you used a very good way will produce good result and create it a new learning environments interactive class, entertaining and motivation for students

Pre‐historic eating patterns in Latin America and protective effects of plant‐based diets on cardiovascular risk factors

In this review, we present the contributions to nutrition science from Latin American native peoples and scientists, appreciated from a historic point of view since pre‐historic times to the modern age. Additionally, we present epidemiological and clinical studies on the area of plant‐based diets and their relation with the prevention and treatment of cardiovascular diseases conducted in recent decades, and we discuss challenges and perspectives regarding aspects of nutrition in the region

Re-imagining cities as ecosystems: environmental subject formation in Auckland and Mexico City

The constitution of environmental subjects by governments and civil society organizations around the world has taken place within a framework of neoliberal urbanization. This entails promoting an individual sense of responsibility over urban environments among city dwellers. The approach used is not so much governmentality as environmentality, because of its focus on environmental matters. We claim that the tools used in this process are designed to generate among urban dwellers an imaginary of the cities they inhabit as ecosystems. Using qualitative methods, we examine cases in Auckland and Mexico City regarding water management

Effective Description of the Quantum Damped Harmonic Oscillator: Revisiting the Bateman Dual System

In this work, we present a quantization scheme for the damped harmonic oscillator (QDHO) using a framework known as momentous quantum mechanics. Our method relies on a semiclassical dynamical system derived from an extended classical Hamiltonian, where the phase-space variables are given by expectation values of observables and quantum dispersions. The significance of our study lies in its potential to serve as a foundational basis for the effective description of open quantum systems (OQS), and the description of dissipation in quantum mechanics. By employing the Bateman's dual model as the initial classical framework, and undergoing quantization, we demonstrate that our description aligns exceptionally well with the well-established Lindblad master equation. Furthermore, our approach exhibits robustness and broad applicability in the context of OQS, rendering it a versatile and powerful tool for studying various phenomena. We intend to contribute to the advancement of quantum physics by providing an effective means of quantizing the damped harmonic oscillator and shedding light on the behavior of open quantum systems.Comment: 18 pages, 3 figure

Ultratrace arsenic determination through hydride trapping on oxidized multiwall carbon nanotubes coupled to electrothermal atomic absorption spectrometry

Arsenic determination in natural waters is an issue of current research. This article reports a novel hydride generation (HG) approach developed for As determination with electrothermal atomic absorption spectrometry (ETAAS) detection. The HG process was interfaced with ETAAS through hydride trapping onto a carbon nanotubes microcolumn. To this end a homemade gas-liquid separator was used, allowing arsine formation and its flow throughout the CNT microcolumn. The retention process involved thus a solid phase extraction from the gas phase to the solid support. Once arsine generation was completed, the elution was carried out with nitric acid directly onto the dosing hole of the graphite furnace. Outstanding sensitivity with detection limit of 1 ng L-1, quantification limit of 5 ng L-1 and the characteristic mass, 5.8 ± 0.4 pg could be achieved. A satisfactory correlation between concentration of As and absorbance (R = 0.9993) from the limit of quantification up to 500 ng L-1, with a relative standard deviation of 6.3% were obtained. A sensitive enhancement factor of 38 was reached when 2 mL of sample were processed and 50 μL of HNO3 were used as eluent. The system was successfully applied to the analysis of a standard reference material, QC LL2 metals in natural waters. In addition tap water analysis provided an As concentration of 0.29±0.03 μg L-1.Fil: Maratta Martínez, Sergio Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; ArgentinaFil: Acosta, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; ArgentinaFil: Martinez, Luis Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; ArgentinaFil: Pacheco, Pablo Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; ArgentinaFil: Gil, Raul Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentin

Genome Sequence of the Siphoviridae Staphylococcus aureus Phage vB_SauS_BaqSau1

Here, we report the genome sequence of a Siphoviridae phage named vB_SauS_BaqSau1 (BaqSau1), infecting Staphylococcus aureus. Phage BaqSau1 was isolated from a sewage water treatment plant in Sahagún, Córdoba, Colombia. It has a double-stranded DNA (dsDNA) genome of 44,384 bp with 67 predicted genes, including a lysin containing a CHAP (cysteine, histidine-dependent amidohydrolase/ peptidase) domain

Impact of photocatalyst optical properties on the efficiency of solar photocatalytic reactors rationalized by the concepts of initial rate of photon absorption (IRPA) dimensionless boundary layer of photon absorption and apparent optical thickness

The concepts of “initial rate of photon absorption” (IRPA), “dimensionless boundary layer of photon absorption” and “apparent optical thickness (τapp)” are presented to evaluate the radiative transfer phenomena in solar, slurry, planar, photocatalytic reactors. The radiation field produced by suspensions of TiO2 and goethite, two photocatalysts with profoundly different optical properties used in heterogenous photocatalysis and heterogeneous photo-assisted Fenton reactions, was determined by the six-flux radiation absorption-scattering model coupled to the Henyey-Greenstein scattering phase function (SFM-HG). The concept of IRPA, defined by the differentiation at the local volumetric rate of photon absorption (LVRPA) at the reactor window boundary, is proposed as a new approach to determine the impact of catalyst loading and optical properties on the extinction of light inside a photoreactor. The IRPA showed that the extinction of light follows a second order dependency on the photocatalyst concentration while the impact of the optical properties can be expressed by a decoupled function (Ψ function). The Ψ function increased with photocatalyst concentration and approached a maximum at the same optimal photocatalyst concentration determined from the analysis of the total rate of photon absorption (TRPA) in the reactor. The analysis of TRPA and boundary layer of photon absorption redefined here in dimensionless form, as a function of τapp, determined that the most efficient rate of radiation absorption in solar powered planar reactors occurs at τapp = 4.1–4.4, with approximately 10% of the reactor width under darkness. τapp is a similarity dimensionless parameter exclusively derived from the SFM approach, which clusters the effects of photocatalyst loading, reactor dimension and photocatalyst optical properties, providing an ideal parameter for designing and scaling photocatalytic reactors operated with any kind of photocatalytic material