Repositorio Institucional Ulima

    Lectura básica del ajedrez de Borges

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    Efficiency of electrocoagulation method to reduce COD, BOD and TSS in tannery industry wastewater: Application of the box–behnken design

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    This study intends to assess the removal efficiency of the chemical oxygen demand (COD), biochemical oxygen demand (BOD), and total suspended solids (TSS) from raw tannery wastewater using electrocoagulation by aluminum electrodes as well as to determine the effects of its main operating factors. Therefore, the response surface methodology was applied through an experimental Box–Behnken design by considering the current intensity (I), treatment time (T), and pH levels as the factors. In addition, the BOD, COD, and TSS removal percentages were considered to be the response variables. The results indicate that the treatment time, current intensity, and pH level were significant for COD and TSS, whereas only the treatment time was significant at a confidence level of p-value < 0.05 for BOD. For COD, the optimal operating conditions were I = 3 A, T = 24 min, and pH = 8.4; for BOD, the optimal operating conditions were I = 3 A, T = 24 min, and pH = 5.5; and for TSS, the optimal operating conditions were I = 2.7 A, T = 19 min, and pH = 7.4. Under these conditions, removal efficiencies of 56.8%, 69.2%, 99.9% were observed for COD, BOD, and TSS, respectively. The results suggest that electrocoagulation is an effective method for removing the parameters under study; therefore, it is a viable alternative for reducing the pollution issues caused by the tannery industry

    A corrupção como espetáculo midiático: análise das capas da revista Veja sobre a operação Lava Jato

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    Este artigo propõe uma análise das capas da revista Veja sobre as atividades da Operação Lava Jato, investigação da Polícia Federal e do Ministério Público Federal. A intenção do estudo não é esgotar o tema, mas discutir os significados sociais e políticos produzidos pelas narrativas. Nossa hipótese é que, além de trabalhar a espetacularização da corrupção como valor-notícia, a revista participa ativamente como ator do jogo político, não sendo apenas um observador da crise que se instalou no Brasil, mas incentivando a população a ir às ruas e lutar contra os governos e os políticos em geral.This article proposes an analysis of the covers of Veja magazine on the activities of Operation Lava Jato — investigation of the Federal Police and the Federal Public Ministry. The intention of the study is not to exhaust the subject, but to discuss the social and political meanings produced by the narratives. Our hypothesis is that in addition to working on the spectacularization of corruption as news-value, Veja actively participates as an actor in the political game, not only being an observer of the crisis settled in Brazil, but encouraging the population to take to the streets and fight against governments and politicians in general

    Mar de recuerdos

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    Mar de Recuerdos es un cortometraje de ficción filmado a finales del 2015 y editado a comienzos del 2016. El proyecto nace de la necesidad de crear contenido audiovisual como medio de expresión artística

    Alguien llama a tu ... tienda

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    El proceso de comunicación con los clientes es un proceso integral y dinámico, gran parte es constituido por el lenguaje no verbal

    Pulso Bursátil (20-noviembre-2019)

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    Publicación diaria acerca del movimiento bursátil del Mercado Integrado Latinoamericano (Perú, Chile, Colombia y México), así como de los principales índices del mundo

    Estudio cuantitativo sobre implementación BIM orientada a la sustentabilidad energética

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    La presente investigación, de alcance descriptivo y enfoque cuantitativo, recopila distintos casos de estudios de diferentes autores acerca de la implementación BIM orientado a aspectos de sustentabilidad energética concernientes a la sexta dimensión BIM (BIM 6 D) encargada de simular el comportamiento de los sistemas energéticos y la correcta gestión de sus recursos Posteriormente, se analizó los datos de los casos de estudios y se concluyó en un demarcado ahorro energétic

    Ojos de Pinina

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    Repositorio Institucional Ulima is based in PE
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