International Journal of Geoscience, Engineering and Technology
type: channel
description: The International Journal of Geoscience, Engineering and Technology is a interdisciplinary journal of the Postgraduate Program of Technology, Environment and Society of the Federal University of Jequitinhonha and Mucuri Valleys (PPGTAS / UFVJM).
publisher: Programa de Pós Graduação em Tecnologia, Ambiente e Sociedade (PPGTAS) da Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
language: pt-BR
publication name: International Journal of Geoscience, Engineering and Technology
issn: 2675-2883
copyright: All articles published in this journal are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International.
items: Editorial to the thirteenth issue of International Journal of Geoscience, Engineering and Technology
items: Editorial Team and Contents Volume 13
items: Correlation between cement content and flexural strength in high-performance concrete
items: Temporal Analysis of the Evolution of the Area Irrigated by Central Pivot Systems in the Municipality of Paracatu, Minas Gerais, Brazil
items: Development of a geovisualization platform applied to the dissemination of railway memory: a case study on the urban quilombo ‘Margem da Linha’ in the city of Teófilo Otoni, Minas Gerais, Brazil
items: Production and quality of seedlings of Pennisetum purpureum Schum cultivar BRS Kurumi as affected by the position of the mini-cutting on the stem and the forcing of sprouting
items: Graph modeling of hospitalizations due to infectious and parasitic diseases in a health macro-region of Minas Gerais
items: Spatiotemporal analysis of deforestation and fire occurrence associated with agricultural potential
items: Analysis and assessment of innovation in a large pharmacy network
items: Theoretical and experimental study of precast slabs reinforced in one direction
items: Editorial Team and Contents Volume 12
items: Editorial to the twelfth issue of the International Journal of Geoscience, Engineering and Technology
items: The first hydrographic and forest survey of the Mucuri Valley in the 19th century
items: Correlation between Compressive Strength and Cement Content in Soil-Cement Blocks
items: Areas of geohydrological risk in the urban perimeter of the Municipality of Coluna in the State of Minas Gerais
items: Zoning of forest fire risk in the city of Teófilo Otoni, Mucuri Valley, Minas Gerais, Brazil
items: National Solid Waste Policy: analysis of final disposal in Teófilo Otoni/MG and the surrounding area
items: Vagão Sustentável: Extension Practices for the SDGs - Insights from a UFVJM Experience in the Mucuri Valley
items: Assessment of the Genotoxic Potential of 17β-estradiol in Different Filters Using the Comet Assay
items: Valuation of Lithium Mining Waste for Water Treatment: An Experimental Study and Broader Implications of Residual Aluminum Silicate (Al2SiO5) as an Artificial Zeolite
items: Comparative Analysis Between the Empirical DNIT Method and the Mechanistic-Empirical MeDiNa in Flexible Pavement Design: A Case Study on BR-135 (Itacarambi–Manga Section)
items: Analysis of Seasonal Variation in the Vegetation Carbon Flux in Quiterianópolis, Ceará, Brazil
items: Assessing the Impact of Land Use, Land Cover, and Precipitation on Water Quality in the Funil Stream, Ouro Preto – MG, Brazil
items: Evaluation of Approximate Methodologies for Dimensioning Reinforced Concrete Columns According to NBR 6118
items: Study of Electricity Generation in Basic Sanitation Systems in Teófilo Otoni/MG
items: Creeping Trends and Risk Assessment in Teófilo Otoni: A Case Study on Presidente Prudente Street
items: A study on dynamic non-destructive testing of ground anchorages - dynamic stiffness method
items: Study on Mass Movement Risk Area in The Manoel Pimenta Neighborhood in the City of Teófilo Otoni/MG
items: Soil and Water Loss Estimation Mathematical Models: A Review
items: Editorial to the eleventh issue of the International Journal of Geoscience, Engineering and Technology

Editorial to the thirteenth issue of International Journal of Geoscience, Engineering and Technology
type: item
description: Editorial to the thirteenth issue of International Journal of Geoscience, Engineering and Technology.
subject: Preface
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creator: Antônio Jorge de Lima Gomes
creator: Jorge Luiz dos Santos Gomes
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-06-30
publication date: 2026-06-30
starting page: IV
ending page: IV
doi: 10.70597/anfac534

Editorial Team and Contents Volume 13
type: item
description: Editorial Team and Contents.
subject: General Layout
  topic: section
subject: Array
  topic: keywords
subject: Array
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creator: Antônio Jorge de Lima Gomes
creator: Jorge Luiz dos Santos Gomes
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-06-30
publication date: 2026-06-30
starting page: I
ending page: III
doi: 10.70597/as9mbd30

Correlation between cement content and flexural strength in high-performance concrete
type: item
description: This study analyzes the correlation between cement content and flexural strength of high-performance concrete (HPC), based on a systematic review of the international literature. The search was conducted on Google Scholar using the terms ASTM C293 and HPC, yielding 205 studies; 35 articles met the inclusion criteria, totaling 289 mix designs analyzed. The data collected included the percentage of cement, the water/cement ratio, the presence of mineral additions, the use of superplasticizers, and the mechanical strengths at 28 days. Average flexural strengths were calculated in cement content intervals of 3%, in addition to the standard deviation and the linear correlation coefficient (r). The results indicated an approximately linear increase in flexural strength with increasing cement content, with average values ranging from 2.70 MPa to 7.20 MPa. The Pearson correlation coefficient obtained (r = 0.693) indicated a moderate association between the variables. For contents above 30%, the behavior became more variable, showing a greater influence of factors such as mineral additions and the water/binder ratio. Additionally, the Mechanical Efficiency Index (MEI) was proposed, which relates flexural strength to cement consumption, enabling evaluation of mix design efficiency. It was found that higher absolute strengths do not necessarily correspond to more efficient mixtures. The results reinforce the importance of optimizing mix designs, considering mechanical performance, and rationalizing cement consumption.
subject: Artigos
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creator: Demisson Renato Ferreira
creator: Deiziele Vieira Higino
creator: Bernat Vinolas Prat
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-05-31
publication date: 2026-05-31
starting page: 51
ending page: 80
doi: 10.70597/13evgc98

Temporal Analysis of the Evolution of the Area Irrigated by Central Pivot Systems in the Municipality of Paracatu, Minas Gerais, Brazil
type: item
description: Agriculture plays a crucial role in economic and social development, particularly in regions where irrigation is essential to ensure stable agricultural production. The availability and demand for water resources are critical factors for guaranteeing water security and promoting sustainable management of natural resources in agricultural environments. This study aimed to analyze the temporal evolution of the irrigated area using central pivot irrigation systems in the municipality of Paracatu, Minas Gerais, Brazil, between 2019 and 2023. Data collection involved hydrological information provided by the National Water Agency (ANA) and metadata on irrigation pivots available from the National Water Resources Information System (SNIRH). Satellite images obtained from Google Earth were used to perform a spatial and temporal analysis of irrigation expansion in the region. The results showed that in 2019 the municipality had approximately 837 central pivots, covering about 61,698.2 hectares of irrigated area. By 2023, the number increased to 1,140 pivots, covering 72,662.83 hectares. This represents a growth of approximately 17.75% in irrigated area and 36.23% in the number of pivots. The findings highlight the importance of irrigation for local agricultural development and reinforce the need for efficient water resource management to ensure environmental sustainability and support future agricultural expansion.
subject: Artigos
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creator: João Victor Oliveira Araújo
creator: Julia Rocha de Oliveira
creator: Mauricio Cezar Resende Leite Junior
creator: Luciane da Costa Barbe Barbe
creator: Leonardo Barros Dobbs
creator: Jefferson Luiz Antunes
creator: Lucas Santos Santana
creator: Denis Leocadio Teixeira
creator: Ângelo Danilo Faceto
creator: Hermes Soares da Rocha
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-05-31
publication date: 2026-05-31
starting page: 81
ending page: 88
doi: 10.70597/fyb08347

Development of a geovisualization platform applied to the dissemination of railway memory: a case study on the urban quilombo ‘Margem da Linha’ in the city of Teófilo Otoni, Minas Gerais, Brazil
type: item
description: This article examines the use of ArcGIS StoryMaps as a tool for preserving and disseminating the collective memory associated with railway heritage, using the quilombola community of Margem da Linha, located in the city of Teófilo Otoni (Minas Gerais, Brazil), as a case study. The historical formation of this community was closely linked to the former Bahia and Minas Railway, whose construction and subsequent dismantling deeply influenced local territorial dynamics. Given the scarcity and dispersion of documentary records related to this railway system, the research sought to identify, organize, and catalog sources concerning its tangible and intangible heritage. The methodological approach combined bibliographic and documentary research, field surveys for mapping remaining railway structures, and the development of the StoryMap entitled “Identidade e Resistência” which integrates interactive maps, historical photographs, documents, and oral history records. The results highlight the potential of geotechnologies for valuing and disseminating railway memory, enabling the reconstruction of the former railway layout, the georeferencing of community social spaces, and broader public access to this historical legacy. The platform was also integrated into the Virtual Museum of the Mucuri Valley (MUVIM), expanding the accessibility of the digital collection. The study concludes that the developed geovisualization platform represents an effective instrument for documenting and preserving local memories, with potential for application in other heritage and territorial contexts.
subject: Artigos
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creator: Anna Clara Carneiro Silva
creator: Hidemitsu Katsuki
creator: Geraldo Lopes Júnior
creator: Sérgio Morais
creator: Márcio Achtschin Santos
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-05-29
publication date: 2026-05-29
starting page: 40
ending page: 50
doi: 10.70597/ns8sq835

Production and quality of seedlings of Pennisetum purpureum Schum cultivar BRS Kurumi as affected by the position of the mini-cutting on the stem and the forcing of sprouting
type: item
description: The production of forage grass seedlings is not a common practice, but for dwarf elephant grass cv. BRS Kurumi, the use of pre-sprouted seedlings is an alternative to optimize quality and reduce establishment costs. Therefore, the objective of this study was to evaluate, for this cultivar, seedling production and quality as a function of the position of the mini-cutting on the stem and the use of a humid chamber in the pre-planting stage. The treatments consisted of combinations of three bud positions on the stem — initial third, middle third, and final third (apical, intermediate, and basal) — subjected or not to acclimatization. A randomized complete block design was used, arranged in a 3 × 2 factorial scheme, with three replications and 42 seedlings per experimental unit. The following morphological parameters were evaluated: Number of Leaves (NF); Stem Diameter (DC); Shoot Height (SH); Number of Roots (NR); Sprouting Percentage (SP); Dry masses: SDM (shoot dry mass), RDM (root dry mass), TDM (total dry mass). Data were subjected to analysis of variance and means were compared by Tukey's test at 5%. Little significant difference was observed among the types of mini-ratoons subjected or not to acclimatization; however, based on the statistical analysis, it was concluded that mini-ratoons extracted from the base of the stem result in better seedling growth and quality regardless of acclimatization.
subject: Artigos
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creator: Yasmin Oliveira Silva Lima
creator: Paula de Aguiar Silva
creator: Amário Nuno Meireles Duarte
creator: Vitor Aparecido Martins Soares
creator: Alexsander Seleguini
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-05-21
publication date: 2026-05-21
starting page: 16
ending page: 27
doi: 10.70597/yfwb2p62

Graph modeling of hospitalizations due to infectious and parasitic diseases in a health macro-region of Minas Gerais
type: item
description: Brazil is undergoing a complex demographic and epidemiological transition, marked by the growing prevalence of chronic non-communicable diseases alongside persistent infectious and parasitic diseases. This study analyzes the profile of hospitalizations associated with these conditions in the municipalities of the Western Macroregion of Minas Gerais, using data from the Unified Health System’s Hospital Information System (SIH/SUS) and applying graph theory to detect similarity patterns among localities. By clustering cities based on characteristics such as gender, race/ethnicity, and age group, we identified both predominant hospitalization profiles and notable outliers. The findings indicate a heterogeneous distribution of hospitalizations, underscoring the importance of targeted public health policies and interventions to address regional health disparities more effectively.
subject: Artigos
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creator: Joaquim Cézar Santana Cruz
creator: Maryanna Soares de Santana
creator: Anna Claúdia Martins de Lima Braga
creator: Cleya da Silva Santana Cruz
creator: Leida Calegário de Oliveira
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-05-28
publication date: 2026-05-28
starting page: 28
ending page: 39
doi: 10.70597/g54t1086

Spatiotemporal analysis of deforestation and fire occurrence associated with agricultural potential
type: item
description: The Cerrado biome has been suffering from deforestation and an increase in wildfires over the past decade, especially due to the expansion of new agricultural frontiers. The aim of this study was to assess the incidence of deforestation and fire events within the different classes of agricultural potential identified for the municipality of Couto de Magalhães de Minas over the last four decades, using continuous monitoring data provided by the MapBiomas Project, with a spatial resolution of 30 meters. For this study, raster files were obtained, clipped to the municipal boundaries, containing cumulative data on deforestation and fires that occurred between 1985 and 2024. These files were processed using geoprocessing techniques in open-source software to generate thematic maps showing the incidence of deforestation and fires in relation to the agricultural potential classes assigned to the municipal territory. The results showed that, over 40 years, the incidence of fires in Couto de Magalhães de Minas was the most concerning environmental degradation factor when compared to deforestation. While deforestation removed about 13.41% of the natural vegetation to make way for human activities, cumulative fire occurrences affected more than 40% of the territory.
subject: Artigos
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creator: Josimar Rodrigues Oliveira
creator: Getulio Fonseca Domingues
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-06-09
publication date: 2026-06-09
starting page: 104
ending page: 113
doi: 10.70597/bmjyy020

Analysis and assessment of innovation in a large pharmacy network
type: item
description: Innovation has played a central and strategic role in global business operations, recognized as an essential component for fostering competitive differentiation in the market. This demand for distinction through innovation has driven research into the true concept of innovation and the development of strategies based on this principle. Any process of change that generates improvements in processes or products, whether goods or services, can be considered innovation, distinguishing itself from invention by being applicable to a real need, feasible for production, and capable of being transferred to the economy. To enhance the level of innovation in a company, it is crucial to understand its innovation strategy and its level of maturity in innovating. This study adopts a single case study methodology, utilizing a qualitative and descriptive approach through the application of questionnaires and interviews with managers. One way to understand the degree of innovation is by applying the Innovation Radar method, a framework composed of 12 dimensions. The objective of this study is to apply the Innovation Radar to analyze and assess the level of innovation in a sector within a large pharmaceutical network. As a result, the Innovation Radar identified that there are innovative proposals and initiatives, especially in the “offering” and “presence” dimensions, but with difficulties in “platform”, “networking”, and “supply chain” aspects. The sector was classified as an occasional innovator, as shown in the overall results of the twelve dimensions.
subject: Artigos
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creator: Hugo Sindeaux Peixoto
creator: Lucelindo Dias Ferreira Junior Reis
creator: Joanderson de Almeida Reis Ferreira
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-05-31
publication date: 2026-05-31
starting page: 1
ending page: 15
doi: 10.70597/9530kf04

Theoretical and experimental study of precast slabs reinforced in one direction
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description: This article presents a case study of the precast slab construction system with the objective of analyzing the accuracy of theoretical structural design methods in comparison with its real mechanical behavior in terms of both ELS and ELU. For the analysis, a 200x200 cm precast slab was built, composed of commercial beams with a height of 8 cm, a base of 12 cm, reinforced with 4.2 mm CA-60 steel. The slab was filled with ceramic tiles and received a 5 cm concrete cap, resulting in a final thickness of 13 cm. The concrete used was of the ARI type, with a minimum characteristic strength of 25 MPa. After a 28-day curing, the shoring was removed in accordance with NBR 6118 (ABNT, 2023), and the load test began in 10 sequential and cumulative stages to measure the displacements immediately up to the ultimate limit state (ELU). The initial experimentally predicted plans were close to the analytically predicted values, validating the theory for the serviceability limit state (SLS). In the ELU, the experimental rupture load was 23.22 kN/m², significantly higher than that found theoretically, confirming the safety of the analytical formulations. Thus, the precast system was considered well characterized by the theoretical model, reinforcing its applicability in future studies.
subject: Artigos
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creator: Flaviane da Rocha Pereira
creator: Matheus Augusto Costa de Oliveira
creator: Thiago Bomjardim Porto
rights: Direitos autorais (c) 2026 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2026-06-09
publication date: 2026-06-09
starting page: 89
ending page: 103
doi: 10.70597/pd3kqr38

Editorial Team and Contents Volume 12
type: item
description: Editorial Team and Contents.
subject: General Layout
  topic: section
subject: Array
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subject: Array
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creator: Antônio Jorge de Lima Gomes
creator: Jorge Luiz dos Santos Gomes
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: I
ending page: III

Editorial to the twelfth issue of the International Journal of Geoscience, Engineering and Technology
type: item
description: Editorial to the twelfth issue of the International Journal of Geoscience, Engineering and Technology.
subject: Preface
  topic: section
subject: Array
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creator: Antônio Jorge de Lima Gomes
creator: Jorge Luiz dos Santos Gomes
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: IV
ending page: IV

The first hydrographic and forest survey of the Mucuri Valley in the 19th century
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description: In 1836, the landlord Antônio da Costa Pinto, taking into account the interests of the Brazilian Empire, ordered the engineer Pierre Victor Renault to make a survey of the forests of Mucuri and the Todos os Santos River in order to choose a place for the construction of a colony and also due to interest in research on the mineral resources in the region. This expedition concluded in 1837 and produced a report that significantly enhanced regional knowledge of the Mucuri Valley. During his journey of clearing certain areas of Minas Gerais, in the region of the present Valley of Mucuri, he discovered a new river that the natives called Mokury, which was later definitively named Rio Mucuri. Found valuable minerals along the route of the Todos os Santos River, chrysolite, seawater, and withdrew from the banks of the small stream called Americanas. Among these, there was a beryl of two and a half pounds, which King John VI presented to the French Emperor Napoleon I, and which is in the Louvre Museum, in the form of a cup. This expedition resulted in a report that contributed to a greater regional knowledge of the Mucuri Valley.
subject: Artigos
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creator: Antonio Jorge de Lima Gomes
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 90
ending page: 95
doi: 10.70597/ijget.v12i1.857

Correlation between Compressive Strength and Cement Content in Soil-Cement Blocks
type: item
description: This study investigates the correlation between the compressive strength of soil-cement blocks and the cement content in their mixture. A systematic literature review was conducted, collecting data from 12 scientific articles, resulting in 87 studies. The selected studies provided important information on the cement content, compressive strength, and casting characteristics of the blocks. The data were organized and statistically analyzed using Microsoft Excel 2019. A linear regression model was applied to evaluate the relationship between cement content and compressive strength measured at 28 days of curing. The results indicate a positive correlation (Pearson's correlation coefficient, r = 0.589) as described in the literature, suggesting that increasing cement content generally improves compressive strength. However, the results also reveal that other factors, such as soil type, compaction pressure, curing conditions, and moisture content, significantly influence the improvement in block performance. This research contributes to the optimization of soil-cement formulations, promoting more sustainable construction practices, minimizing cement consumption, and ensuring structural integrity. Limitations of the study include the variability in experimental conditions between the reviewed studies and the reliance on secondary data. Future research should incorporate experimental investigations to validate and expand on these results.
subject: Artigos
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creator: Demisson Renato Ferreira
creator: João Luiz da Cruz Junior
creator: Lucas Felype Silva
creator: Luís Otávio Rocha Porto
creator: Frank Alison de Carvalho
creator: Rosana Passos Cambraia
creator: Bernat Vinolas Prat
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 66
ending page: 77
doi: 10.70597/ijget.v12i1.678

Areas of geohydrological risk in the urban perimeter of the Municipality of Coluna in the State of Minas Gerais
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description: This study presents the initial results of the geohydrological risk survey conducted in the Municipality of Coluna, State of Minas Gerais, Brazil. In this matter, field surveys were conducted, integrating with historical records of landslides and floods, which enabled the classification of geohydrological risks from R1 to R4, in accordance with the methodology of the Brazilian Ministry of Cities, as well as an understanding of the region's vulnerability. With unplanned urbanization, human interventions, road construction, and building in unsuitable areas, the risk of environmental disasters is increased in the city of Coluna, characterized by soils susceptible to erosion, irregular topography, and steep slopes, increases during the rainy season. The results obtained at the six points studied, called A, B, C, D, E and F, indicate that the lack of adequate drainage, combined with interventions without technical criteria, increases soil instability and population exposure, with Points A, B, E and F being high risk (R3) and Points C and D being medium risk (R2). It is therefore essential to implement prevention and mitigation strategies, such as rigorous urban planning, inspection, containment and drainage works, and environmental education, as fundamental measures to reduce vulnerabilities, protect lives, and promote safer and more sustainable development in the city of Coluna.
subject: Artigos
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creator: MARCELO AZEVEDO
creator: Antônio Jorge de Lima Gomes
creator: Jorge Luiz dos Santos Gomes
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 96
ending page: 106
doi: 10.70597/ijget.v12i1.850

Zoning of forest fire risk in the city of Teófilo Otoni, Mucuri Valley, Minas Gerais, Brazil
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description: Forest fires, intensified by anthropogenic pressure and climate change, pose a significant threat to ecosystems and socioeconomic activities. This study aimed to perform wildfire risk zoning in Teófilo Otoni, Minas Gerais, in order to identify vulnerable areas and support conservation and sustainable management policies. Maps were developed using QGIS software, considering slope aspect, gradient, distance from urban clusters, proximity to road networks, and land use and land cover, based on data from the Digital Elevation Model (MDE), the Spatial Data Infrastructure of the State Environmental System (IDE-SISEMA) and the MapBiomas Project, Collection 10 (2024). The results showed that 65.60% of the municipal territory presents Moderate to Very High risk, particularly in agricultural areas, north-facing slopes, and regions near highways. The consistency of the zoning was confirmed by the 227 fire hotspots recorded between 2020 and 2025, highlighting its relevance for local environmental planning.
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creator: Guilherme Ribeiro Amorim
creator: Heder Alves dos Reis
creator: Lucas Pereira Cerqueira
creator: Leonidas Soares Murta Júnior
creator: Erica Karolina Barros de Oliveira
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 25
ending page: 38
doi: 10.70597/ijget.v12i1.759

National Solid Waste Policy: analysis of final disposal in Teófilo Otoni/MG and the surrounding area
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description: This article examines the effectiveness of the National Solid Waste Policy (PNRS), established by Law n°. 12,305/2010, in municipalities with high socioeconomic vulnerability in the semi-arid region of Minas Gerais. The focus is on Teófilo Otoni and neighboring areas in the Mucuri Valley. The study uses a literature review and analyzes secondary data from official sources, including the IBGE. The results reveal several problems: the continuous existence of uncontrolled landfills, limited structured public policies, weak implementation of Municipal Integrated Solid Waste Management Plans (PMGIRS), and a lack of effective inter-municipal cooperation. Furthermore, the analysis highlights fragmented governance and inadequate technical and financial support for smaller municipalities. Although the PNRS represents a significant regulatory advancement, its implementation in peripheral regions is limited by structural and operational challenges. The study suggests that strengthening inter-municipal partnerships, promoting inclusive recycling practices, and ensuring sufficient funding mechanisms are vital to improving the policy's effectiveness at the local level.
subject: Artigos
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creator: Pedro Henrique Oliveira
creator: Luiz Gustavo Magalhães Keller
creator: Francisco César Dalmo
creator: Jakelyne Coelho
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 78
ending page: 89
doi: 10.70597/ijget.v12i1.757

Vagão Sustentável: Extension Practices for the SDGs - Insights from a UFVJM Experience in the Mucuri Valley
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description: This paper presents the results carried out at the Mucuri Campus of the Federal University of the Jequitinhonha and Mucuri Valleys (UFVJM), in Teófilo Otoni, Minas Gerais, held in reference to World Environment Day. The initiative aimed to raise awareness among the academic and local community regarding responsible consumption, environmental education, and solidarity. The actions included a swap fair, ecological thrift store, donation drive, selective waste collection, and seedling distribution, all conducted in an integrated and coordinated manner. Participants included students, faculty members, administrative staff, representatives from ASCANOVI, the State Institute of Forests (IEF), and elderly residents from the Vila Esperança neighborhood in the city. As outcomes, food and clothing were collected and donated to the “Pão Nosso de Cada Noite” Project, approximately 50 native and fruit tree seedlings were distributed by the IEF, and recyclable waste was properly disposed of, reinforcing the sustainable dimension of the activity. The experience was aligned with five Sustainable Development Goals (SDGs) from the UN’s 2030 Agenda: SDG 1 - No Poverty, SDG 11 - Sustainable Cities and Communities, SDG 12 - Responsible Consumption and Production, SDG 13 - Climate Action, and SDG 15 - Life on Land, demonstrating the potential of university extension as a tool for socio-environmental transformation and the strengthening of territorial sustainability.
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creator: Eric Mendes Ramos
creator: Nívia Lisboa dos Santos
creator: Francisco César Dalmo
creator: Luan Brioschi Giovanelli
creator: Izabel Cristina Marques
creator: Jakelyne Coelho
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 61
ending page: 65
doi: 10.70597/ijget.v12i1.755

Assessment of the Genotoxic Potential of 17β-estradiol in Different Filters Using the Comet Assay
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description: This study assessed the genotoxicity of different filtering materials in remediating the hormone 17β-estradiol (E2), an emerging contaminant with genotoxic potential. The comet assay was performed using Allium cepa root cells to evaluate DNA damage after filtration. Filters containing banana biomass, Pleurotus ostreatus biomass, δ-FeOOH, and a combination of the three were tested. All treatments were efficient in reducing E2-induced DNA damage, with δ-FeOOH showing the highest remediation performance, presenting the lowest DNA Damage Index and Damage Frequency. The ImageJ software was used for the analysis of images obtained by epifluorescence microscopy, being essential for accurate measurement of DNA migration. The findings highlight the potential of natural, low-cost materials in the treatment of estrogen-contaminated effluents, supporting the development of sustainable environmental technologies.
subject: Artigos
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creator: Alice Camilo Duarte
creator: Edipaula Barbosa Franco
creator: Fernanda Junger Schaper
creator: Sthefany Burmann Soares
creator: Jairo Lisboa Rodrigues
creator: Márcia da Silva Faria
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 39
ending page: 51
doi: 10.70597/ijget.v12i1.734

Valuation of Lithium Mining Waste for Water Treatment: An Experimental Study and Broader Implications of Residual Aluminum Silicate (Al2SiO5) as an Artificial Zeolite
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description: This study explored the potential of residual aluminum silicate (Al2SiO5), a mining byproduct collected from Brazilian Lithium Company (CBL), as a flocculating agent in the treatment of clay particle-laden waters. The experiments evaluated the material's ability to aggregate particles and reduce water turbidity under different conditions, acting as an artificial zeolite. Results demonstrated the effectiveness of residual aluminum silicate in flocculation, outperforming the control treatment. It was observed that the flocculant's performance was influenced by the medium's pH, being more efficient under alkaline conditions. This work suggests that residual aluminum silicate is a promising candidate for water treatment, but highlights the need for further understanding of its action and optimization for large-scale applications.
subject: Artigos
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creator: Thiago Heron de Queiroz Rodrigues Thiago Heron
creator: Luana Gonzaga de Carvalho Silva
creator: Lucas Faria da Silva
creator: Márcia Cristina da Silva Faria
creator: Alexandre Sylvio Vieira da Costa
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 1
ending page: 14
doi: 10.70597/ijget.v12i1.701

Comparative Analysis Between the Empirical DNIT Method and the Mechanistic-Empirical MeDiNa in Flexible Pavement Design: A Case Study on BR-135 (Itacarambi–Manga Section)
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description: This study presents a comparative analysis between the empirical DNIT method and the mechanistic-empirical MeDiNa method for flexible pavement design. The research aimed to identify the conceptual and practical differences between the methodologies, highlighting calculation criteria, structural parameters, and long-term performance. Case studies and technical references were used to demonstrate the advantages of MeDiNa, such as greater accuracy in handling traffic, climate, and material variables, as well as the ability to estimate pavement behavior over time. On the other hand, the empirical DNIT method, although well-established, shows limitations under current conditions. The results indicate that MeDiNa represents a significant advancement, allowing for more efficient and durable designs, and is considered a superior alternative for modern pavement design in Brazil.
subject: Artigos
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creator: Cinthia Emanuelle Alves de Souza
creator: Alana Ellen Valeriano Rocha
creator: Paulo Cesar Mendes Junior
creator: Breno Alcântara Silva
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 15
ending page: 24
doi: 10.70597/ijget.v12i1.699

Analysis of Seasonal Variation in the Vegetation Carbon Flux in Quiterianópolis, Ceará, Brazil
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description: Vegetation is of significant importance in various ecosystemic, biotic, and abiotic relationships, particularly for its active role in maintaining biogeochemical cycles. A prime example is the carbon cycle, where carbon is removed from the atmosphere and relocated to the biosphere through photosynthesis. Recognizing the importance of vegetation in mitigating the climatic and environmental impacts of carbon, this study aimed to perform a spatial-seasonal analysis of phytomass development, light use efficiency in photosynthesis, and carbon flux for the municipality of Quiterianópolis, Ceará. The analysis was conducted using biophysical indices (NDVI, sPRI, and CO2Flux) derived from Landsat 8 satellite imagery. The findings revealed that climatic seasonality influences the spatial distribution and values of phytomass development, light use efficiency, and carbon assimilation. The variables analyzed during the rainy season were found to be more developed compared to the results from the dry season. This phenomenon is related to the phenological stages of vegetation, which respond to the abiotic stimuli provided by climatic seasonality.
subject: Artigos
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creator: Douglas Cavalcante Holanda
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-10-31
publication date: 2025-10-31
starting page: 52
ending page: 60
doi: 10.70597/ijget.v12i1.575

Assessing the Impact of Land Use, Land Cover, and Precipitation on Water Quality in the Funil Stream, Ouro Preto – MG, Brazil
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description: With population growth, the demand for water resources increases, intensifying environmental pressures. Among these, inadequate land management practices can significantly affect the integrity of aquatic ecosystems. This study investigates the effects of precipitation patterns and anthropogenic changes in the landscape on water conditions in a watershed located in Ouro Preto, Minas Gerais, Brazil. Data on water parameters were collected from the Minas Gerais Water Management Institute (IGAM), precipitation records from the National Institute of Meteorology (INMET), and land cover data from the United States Geological Survey (USGS), analyzed using ArcGIS 10.5/ArcMap®. The results indicate variations in water characteristics associated with increased surface runoff and the mobilization of geological materials, including heavy metals. These changes appear to be linked to soil exposure over time, as observed in remote sensing analyses. Additionally, the presence of mining activities in the area may be a contributing factor to water quality degradation.
subject: Artigos
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creator: Tasmine Miranda Ramos
creator: Rodrigo Esteves Ribeiro
creator: Francisco César Dalmo
creator: Luan Brioschi Giovanelli
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-04-30
publication date: 2025-04-30
starting page: 57
ending page: 66
doi: 10.70597/ijget.v11i1.560

Evaluation of Approximate Methodologies for Dimensioning Reinforced Concrete Columns According to NBR 6118
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description: A comparative analysis was carried out between two semi-empirical methods for calculating double-supported columns established by ABNT NBR 6118 de 2023, “Concrete Structures Design – Procedure”, with emphasis on columns classified as moderately slender, with a slenderness index between 35 and 90. A comparison was made of steel consumption and the moment requesting calculation for 18 different columns (geometry and loading), considering the calculation methods (I) of the standard column with approximate curvature and, (II) of the standard column with approximate “κ” stiffness. The main differences obtained refer to the methodology for calculating second-order geometric effects for evaluating the structural deformability of bars after being requested by design loads. The analyzes carried out considered the three classifications of pillars provided for in the Brazilian Regulations: corner, end and center. Finally, it was concluded that methodology (II) standard column method with approximate “κ” stiffness proved to be more economical, with an indication of a reduction in the reinforcement rate of reinforced concrete columns varying in the order of 50% (± 34%) depending on the conditioning variables of each element analyzed.
subject: Artigos
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creator: Rafael Pereira Malheiros
creator: Thiago Fonseca Diniz
creator: Antônio Ribeiro de Oliveira Neto
creator: Thiago Bomjardim Porto
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-04-30
publication date: 2025-04-30
starting page: 50
ending page: 56
doi: 10.70597/ijget.v11i1.559

Study of Electricity Generation in Basic Sanitation Systems in Teófilo Otoni/MG
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description: The aim of this study was to evaluate the implementation of different sources of energy generation in the facilities of the basic sanitation service companies that serve the municipality of Teófilo Otoni, Minas Gerais. It is, therefore, the water supply collection system and the sanitary sewage treatment system. The systems are operated by Companhia de Saneamento de Minas Gerais (COPASA). The energy potential was calculated based on the power and energy equations and was taken into account the quantity of each resource. In the water collection system, the volume of water collected for supply was considered; in the sewage treatment plant, the volume of sewage treated was considered. For each energy potential, the total value was multiplied by the corresponding energy price in the last auctions in which each source participated. In view of the estimated revenue, a financial balance was made concerning energy costs in the water supply and sewage system. Finally, it was found that the financial savings would be positive in the short term if the generation projects were implemented, which could reduce the fees and tariffs applied to sanitation systems.
subject: Artigos
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creator: Larissa Gonzaga de Carvalho Silva
creator: Tuane de Oliveira Dutra
creator: Luan Brioschi Giovanelli
creator: Francisco César Dalmo
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-04-30
publication date: 2025-04-30
starting page: 38
ending page: 49
doi: 10.70597/ijget.v11i1.558

Creeping Trends and Risk Assessment in Teófilo Otoni: A Case Study on Presidente Prudente Street
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description: This study investigated the creeping phenomena on Presidente Prudente Street, Jardim São Paulo neighborhood, in Teófilo Otoni – MG, using an approach that combined literature review, field analysis, and the application of guidelines from the Ministry of Cities for risk mapping. During the field survey, various indicators of creeping were observed, such as trees with abnormal inclinations, soil cracks, and abandoned buildings with signs of structural deformation. Based on these observations, the area was preliminarily classified as Medium Risk (R2), although this assessment is an initial interpretation. The instability of the terrain and the presence of mass movements indicate potential risks to the safety of constructions in the studied area. This research identified physical signs of these geological phenomena, demonstrating the vulnerability of this location and warning against unplanned urbanization. The study contributes to understanding the geological processes affecting Teófilo Otoni, providing a basis for future studies and interventions aimed at safety and sustainable urban planning in the region.
subject: Artigos
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creator: Luiz Felipe Amaral Silva
creator: Antônio Jorge de Lima Gomes
creator: Jorge Luiz dos Santos Gomes
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-04-30
publication date: 2025-04-30
starting page: 31
ending page: 37
doi: 10.70597/ijget.v11i1.557

A study on dynamic non-destructive testing of ground anchorages - dynamic stiffness method
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description: This present paper analyzes an anchored retaining wall using a non-destructive dynamic test, which is based on the variation of the dynamic stiffness of the ground anchors, applied to a real case study. The main objective is to evaluate the applicability and particularities of the method to identify the structural integrity of the anchorages, including their free, total and anchored lengths, as well as their current working loads. The results indicated that the dynamic stiffness of the anchorages varied around 5.0E8 N/m, while the working loads found were values between 74.6 kN and 107.9 kN. The analyses performed indicated that the dynamic stiffness of the anchorages did not present large variations along the anchored wall, proving that the determined lengths accurately reflect the real situation of the anchorages. In addition, a very isonomic distribution of forces was obtained, evidenced by the stiffness values obtained. The method stood out for its practicality in execution and analysis of results, consolidating itself as an effective and non-destructive tool for structural evaluation. Despite the general ease of the method, the study reinforces the need for technical experience in the interpretation of specific steps of the procedure, especially in cases with more complex structural behavior. The test proved to be a reliable solution for the continuous monitoring and diagnosis of containment systems, meeting the requirements of normative inspections and contributing to preventive maintenance. Thus, the work reinforces the potential of the method to ensure the safety, structural performance and longevity of anchored walls.
subject: Artigos
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creator: Emanuel Gomes Cândido Coelho
creator: Lucas Deleon Ferreira
creator: Jean-Jacques Rincent
creator: Antônio Jorge de Lima Gomes
creator: Armando Belato Pereira
creator: Marcos Túlio Fernandes
creator: Ticiane Schivittez Elacoste
creator: Thiago Bomjardim Porto
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-01-29
publication date: 2025-01-29
starting page: 19
ending page: 30
doi: 10.70597/ijget.v11i1.556

Study on Mass Movement Risk Area in The Manoel Pimenta Neighborhood in the City of Teófilo Otoni/MG
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description: Brazil is a country with great climatic, geological and socioeconomic diversity. One of the main problems faced in urban centers is the occupation of land, mostly by an economically vulnerable population, in areas at risk of movement of massive soil or in areas of flooding, putting them at risk of material, health and life. This work aims to identify, classify and recommend technical solutions in an area at risk of slope sliding in the Manoel Pimenta neighborhood, in the city of Teófilo Otoni. A history of mass movement and the imminence of new mass movement were noted in the study area, where there are 3 residences, all classified as R4 (High Risk), requiring intervention from public bodies and owners to mitigate risks.
subject: Artigos
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creator: Helio Soares de Aguilar Junior
creator: Antônio Jorge de Lima Gomes
creator: Hiago Félix Santos
creator: Thais Mayara Rodrigues Gomes
creator: Thiago Ferreira de Araújo
rights: Direitos autorais (c) 2024 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2024-12-02
publication date: 2024-12-02
starting page: 11
ending page: 18
doi: 10.70597/ijget.v11i1.555

Soil and Water Loss Estimation Mathematical Models: A Review
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description: The erosion process is natural but has intensified in recent years due to anthropogenic activities, becoming a socio-environmental issue resulting from soil degradation. This process impacts various areas, and its measurement is a critical tool for adopting management strategies and conservation practices. Mathematical models can estimate soil losses under different environmental conditions. When integrated with GIS environments, these models significantly reduce execution and study costs, while generating valuable information, creating maps, and characterizing the environment. This study aimed to perform a systematic literature review on mathematical models for soil and water loss and to highlight some of their applications through the analysis of articles published in journals and indexed in electronic databases. Over the years, various models have been developed, and their use has proven essential for implementing conservation practices and restoring degraded areas. Due to the complexity of the process, it is crucial to consider the parameters available in each situation to select the most appropriate model.
subject: Artigos
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creator: Nayme Soares Guedes
creator: Camila de Sousa Queiroz Almeida
creator: Caio Herman Teixeira de Oliveira
creator: Marlon Fernandes Ramos
creator: Huézer Viganô Sperandio
creator: Daniel Brasil Ferreira Pinto
creator: Rafael Alvarenga Almeida
rights: Direitos autorais (c) 2024 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2024-12-02
publication date: 2024-12-02
starting page: 1
ending page: 10
doi: 10.70597/ijget.v11i1.554

Editorial to the eleventh issue of the International Journal of Geoscience, Engineering and Technology
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description: Editorial to the eleventh issue of the International Journal of Geoscience, Engineering and Technology.
subject: Preface
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creator: Antônio Jorge de Lima Gomes
creator: Jorge Luiz dos Santos Gomes
rights: Direitos autorais (c) 2025 International Journal of Geoscience, Engineering and Technology https://creativecommons.org/licenses/by-nc-sa/4.0
date: 2025-04-30
publication date: 2025-04-30
starting page: III
ending page: III