The configuration of logistics networks for waste oil and fats collection services is a strategic point of great importance, since their disposal contributes to a number of environmental disturbances, problems in sewage pipes and wastewater treatment systems. Starting from this premise, this paper proposes location of ecopoints in the city of Montes Claros-MG, capable of optimizing the collection of the waste oil and fats in all urban area of the municipality. This proposal of location was constructed in two stages: in the first, the collection network was constructed by integrating a location model of facilities with a geographic information system (GIS). It was possible to model a collection network in the city of Montes Claros - MG containing 87,748 points referenced by geographic coordinates and representatives of residential points considered as potential generators of these residues. During the creation of the model, due to the high density of the network and the low quantity of facilities (p), which causes limitation in the solution, it was observed the need for thematization of the map and consequently the network partitioning in zones, which allowed to determine the initial amount of installations that were to be found in the solution. Finally, an application in the native language of Transcad, GISDK, was developed with a programming interface that was developed to automate the process of integration of the model in the GIS. The model allowed the creation of 12 networks with densities below 12000 points, allowing gain in the solution of the problem.

Studies on walkability aim to assess the quality of pedestrian movement and the factors that influence decisions about travelling on foot. In the last two decades, authors have dedicated themselves to answering these questions, after all, walking is the most elementary mode of travel, and it is present throughout Brazilian territory. The objective of this work is to propose a methodology for the elaboration of a Walkability Index for the city of Montes Claros/MG. As specific objectives, it proposes the apprehension of studies focused on pedestrian displacements and the use of the multicriteria analysis method AHP – Analytic Hierarchy Process to develop the index. The methodology was built in two stages. The first carries out a review of the theoretical aspects of walkability. The second consists of building the Walkability Index, carried out in three activities: i) multicriteria analysis to define the weights of the walkability indicators, resulting from expert opinion and pedestrian perception; ii) definition of criteria for evaluating the indicators; and iii) application of the mathematical model for calculating the walkability index. The results reflect the relevance of the indicators: existence of sidewalks, lighting and sidewalk maintenance/conservation, and show how essential it is to understand local specificities in the assessment of walkability. Os estudos acerca da caminhabilidade propõem avaliar a qualidade do deslocamento dos pedestres e os fatores que influenciam as decisões pela viagem a pé. Nas últimas três décadas autores se dedicam a responder a estas questões, afinal, o caminhar é o mais elementar modo de deslocamento, e está presente em todo território brasileiro. O objetivo desse trabalho é propor uma metodologia para elaboração de um Índice de Caminhabilidade para a cidade de Montes Claros/MG. Como objetivos específicos, propõe a apreensão de estudos voltados para os deslocamentos pedonais e a utilização do método de análise multicritério AHP – Analytic Hierarchy Process para desenvolver o Índice de Caminhabilidade. A metodologia foi construída em duas etapas. A primeira efetua uma revisão nos aspectos teóricos da caminhabilidade. A segunda consiste na construção do Índice de Caminhabilidade realizada em três atividades: i) análise de multicritério para definição dos pesos dos indicadores de caminhabilidade, resultante da opinião de especialistas e da percepção de pedestres; ii) definição de critérios para avaliação dos indicadores; e iii) aplicação do modelo matemático para o cálculo do índice de caminhabilidade. Os resultados refletem a relevância dos indicadores: existência de calçada, iluminação, e manutenção/conservação de calçada, e mostram o quão é fundamental entender as especificidades locais na avaliação da caminhabilidade.

Noise-induced hearing loss has a high incidence among Brazilian workers, causing socioeconomic and cognitive impairments. To describe noise-induced hearing loss according to professional occupation between 2012 and 2021. This was a cross-sectional and descriptive study of Brazilian workers affected by noise-induced hearing loss. Data were collected from noise-induced hearing loss notifications filed with the Sistema de Informação de Agravos de Notificação in Brazil. The absolute and relative frequencies of sociodemographic variables and occupational characteristics were assessed. A total of 7,413 cases of noise-induced hearing loss were notified in Brazil. Workers in industrial production were the most affected (56.4%). There was a higher prevalence in White (45.4%), male (87.3%) participants aged between 50 and 59 years (42.5%) from the Southeast region (43%). In this study, 3.5% of participants were temporarily removed from their position, 42.6% reported using personal protective equipment, and 65.7% did not use collective protective equipment. The most prevalent type of noise was continuous noise (33%). Noise-induced hearing loss is prevalent among Brazilian workers and varies according to each occupational group. Cases of noise-induced hearing loss are underreported in Brazil.

Este estudo apresenta os resultados das propriedades termoluminescentes (TL) de discos de quartzo prensados com teflon, visando aplicações dosimétricas para feixes de raios X utilizados em exames de mamografia. Os resultados desta pesquisa mostraram que os discos de quartzo possuem alta sensibilidade, resposta TL linear com a dose de radiação, boa reprodutibilidade, baixo desvanecimento da resposta TL e tempo de vida útil do sinal TL adequado para o uso na dosimetria de raios X. Estes resultados foram comparados e discutidos em relação aos valores relatados na literatura para os dosímetros TL comerciais. Com esta pesquisa, também foi possível constatar a importância de realizar a leitura TL sempre na face irradiada dos discos, tendo em vista que a morfologia da superfície degradada pela manipulação e pelos procedimentos de irradiação, leitura TL e tratamentos térmicos, pode diminuir a sensibilidade dos discos, ocasionando maiores variações da resposta TL. Este fato foi confirmado com microscopia óptica e pela análise comparativa entre as leituras TL realizadas nas faces dos discos expostos a um feixe de raios X.

This study investigated the cycling infrastructure and cyclists' perceptions of sustainable urban mobility in Montes Claros, Minas Gerais, Brazil, based on bicycle use. The methodology involved an analysis of the road environment for cyclists and the application of questionnaires to experts and cyclists, using a multi-criteria approach. The results revealed limitations in the infrastructure, such as the lack of segregated bike lanes. Additionally, cyclists expressed concerns about safety, such as disrespect from drivers and insufficient lighting on roads. These findings highlight the need for investments in cycling infrastructure and public policies focused on safety and sustainable mobility. This study contributes to the knowledge of cyclability in Montes Claros by developing a procedure for cyclability analysis that can be used in other locations. Furthermore, it provides valuable information for urban planning and the promotion of bicycle use as a sustainable mode of transportation, with the potential to improve urban mobility and quality of life for the population.

O Aumento crescente da população mundial e constante processo de urbanização vem provocando o aumento da produção das grandes unidades industriais e o consumo de bens no mercado, promovendo aumento da geração da quantidade de Resíduos sólidos das cidades nos últimos anos. Em consequência deste fenômeno descrito anteriormente, a quantidade de pontos para a coleta dos Resíduos Sólidos Domiciliares aumenta, promovendo a geração de custos e distâncias maiores, consequentemente com impactos no transito urbano e diminuição da eficácia e qualidade dos sistemas logísticos e de transporte das empresas que operam os serviços de limpeza. Como método de suporte aos processos de roteirização para a coleta dos resíduos, utilizou-se o SIG-T software TransCAD versão 4.5. com a aplicação da rotina do Problema de Roteirização de Veículos para o planejamento, execução e análise dos roteiros dos Caminhões nos serviços de coleta de limpeza Urbana – SSU- Secretaria de Serviços urbanos na cidade de Montes Claros.