Anuario do Instituto de Geociencias最新文献_第9页

Dispersão Espacial de Atributos Químicos do Solo de um Açaizeiro na Região Amazônica 亚马逊地区一株Acai树土壤化学属性的空间分散性

Anuario do Instituto de Geociencias Pub Date : 2022-07-26 DOI: 10.11137/1982-3908_2022_45_40848

Lucélia Souza de Barros, Ewelyn Regina Rocha Silva, M. D. N. M. Maciel, Vânia Silva de Melo, R. E. Cicerelli, T. Almeida

引用次数: 1

Principais Padrões de Verão da Pressão ao Nível do Mar sobre a Região da América do Sul no Clima Presente e em Projeções Futuras 南美洲地区目前和未来气候预测中海平面压力的主要夏季模式

Anuario do Instituto de Geociencias Pub Date : 2022-07-18 DOI: 10.11137/1982-3908_2022_45_40597

T. Teodoro, Michelle Simões Reboita, Gustavo Carlos Juan Escobar

引用次数: 1

Evaluation of LiDAR Point Clouds Density in the Interpolation of Digital Terrain Models for Power Line Planning in Northeast Brazil 巴西东北部输电线路规划数字地形模型插值中激光雷达点云密度的评估

Anuario do Instituto de Geociencias Pub Date : 2022-07-15 DOI: 10.11137/1982-3908_2022_45_40773

J. Centeno, Claudionor Ribeiro da Silva

{"title":"Evaluation of LiDAR Point Clouds Density in the Interpolation of Digital Terrain Models for Power Line Planning in Northeast Brazil","authors":"J. Centeno, Claudionor Ribeiro da Silva","doi":"10.11137/1982-3908_2022_45_40773","DOIUrl":"https://doi.org/10.11137/1982-3908_2022_45_40773","url":null,"abstract":"Mapping activities for the implementation of basic and executive projects for electric power transmission lines systematically involves topographic surveys. This study presents the results of a comparative study on the influence of the density of aerial survey points, LiDAR (Light Detection and Ranging), for the calculation of digital terrain models (DTMs) in typical areas of the northeastern region of Brazil, in the context of modeling ground for planning electricity transmission lines. The study area is the region covered by the 230 kV Ibicoara/Brumado transmission line, located in the state of Bahia/Brazil.. In part of this region, elevations of the mountains of the Western Edge of Chapada Diamantina predominate. Therefore, points with varying densities were used to interpolate DTMs in different environments. Point cloud classification (Airborne LiDAR) was performed using the TerraScan program using semi-automatic classification methods, followed by manual refinements. To evaluate the terrain models obtained with different point densities, four areas were selected under transmission line: Area 1 (24.4/m2), Area 2 (46.0/m2), Area 3 (33.7/m2) e Area 4 (29.7/m2). The Airborne LiDAR survey was performed with an Optech ALTM Pegasus HD500 sensor, calibrated to obtain a density of 15 points/m2. The results showed that, depending on the nature of the vegetation cover, less dense laser surveys do not offer enough quality to generate DTMs. However, in some cases, when the vegetation is denser and the terrain is not flat, the quality of the DTM decreases as the density of the points decreases. The study shows that the survey density must be suitable for the region to be analyzed. An important guideline would be to repeat this study in other areas with different coverage and relief variations, in order to create specifications to serve as a basis for planning LiDAR surveys on other transmission lines.","PeriodicalId":39973,"journal":{"name":"Anuario do Instituto de Geociencias","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49480977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Geostatistical Mapping of Folded Itabiritic Rocks of the Bonito Mine, Northeastern Brazil 巴西东北部Bonito矿褶皱易达曜岩的地质统计填图

Anuario do Instituto de Geociencias Pub Date : 2022-07-15 DOI: 10.11137/1982-3908_2022_45_40955

Helano Fonteles, Cesar Ulisses Vieira Veríssimo

{"title":"Geostatistical Mapping of Folded Itabiritic Rocks of the Bonito Mine, Northeastern Brazil","authors":"Helano Fonteles, Cesar Ulisses Vieira Veríssimo","doi":"10.11137/1982-3908_2022_45_40955","DOIUrl":"https://doi.org/10.11137/1982-3908_2022_45_40955","url":null,"abstract":"Geological modeling is the primary task of any exploratory geological investigation, and it is performed even during the mine development. In the study area, the Serra dos Quintos Formation hosts banded iron formations represented by assorted itabirites. The database used in this work was exploited from a geological databank which was structured to gather data and information depicted from an exhaustive exploratory drilling program. A survey was performed throughout the entire databank to collect the available thickness data values (measured in meters) from drill core logs that intersected the itabirite. Since structural heterogeneities can occur within these rocks, this study aims to identify such features. Geostatistical estimation and simulation methods were employed to map folded itabiritic beds based on thickness data accurately. Kriging estimators are often used for practical reasons; however, sometimes, the estimates can be smoothed and do not represent the entire original data range. Simulation algorithms can yield several stochastic images, but local accuracy cannot always be guaranteed. Simulated annealing was performed by adjusting the global statistics and preserving the local accuracy. We demonstrated that the banded iron formations’ thicker areas might correspond to the antiform fold as the dominant tectonic feature in the study area. Finally, we show that the simulated thickness map discloses the thicker mineralized spots. Meanwhile, the thinner ones may unveil intrinsic structural heterogeneities mainly observed at the limbs of the Bonito fold, where intensive deformation within the itabiritic layer was higher than expected. Concerning the mining issues, information obtained from the simulated thickness map could provide ancillary data to improve mining planning in the study area. ","PeriodicalId":39973,"journal":{"name":"Anuario do Instituto de Geociencias","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44909951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estrogenic Activity and Endocrine Disruptor Compounds Determined in Guanabara Bay (Brazil) by Yeast Estrogen Screen Assays and Chemical Analyses 用酵母雌激素筛选试验和化学分析测定瓜纳巴拉湾(巴西)的雌激素活性和内分泌干扰物

Anuario do Instituto de Geociencias Pub Date : 2022-07-14 DOI: 10.11137/1982-3908_2022_45_45450

M. Nascimento, A. Santos, D. Cunha, L. Felix, G. Gomes, R. Hauser‐Davis, E. Fonseca, D. Bila, J. A. Baptista Neto

{"title":"Estrogenic Activity and Endocrine Disruptor Compounds Determined in Guanabara Bay (Brazil) by Yeast Estrogen Screen Assays and Chemical Analyses","authors":"M. Nascimento, A. Santos, D. Cunha, L. Felix, G. Gomes, R. Hauser‐Davis, E. Fonseca, D. Bila, J. A. Baptista Neto","doi":"10.11137/1982-3908_2022_45_45450","DOIUrl":"https://doi.org/10.11137/1982-3908_2022_45_45450","url":null,"abstract":"Studies assessing the presence of endocrine disrupting compounds in marine environments have increased in the last decades. In Brazil, the combination of poor sanitation conditions and low investment in sewage treatment plants leads to significant contamination of receiving waters. The risks of these micropollutants in the aquatic biota include biochemical and histopathological alterations of the liver, gonads, and kidneys, as well as, reproductive process and development modifications, and behavioral changes, among others. The aim of this study was to evaluate the quality of the surface and deep waters of Guanabara Bay, southeastern Brazil, regarding the presence of estrogenic substances. Acute toxicity assays were also conducted employing Vibrio fischeri. The estrogenic activity of the water samples was determined by Yeast Estrogen Screen assay and the quantification of the Bisphenol A, estriol, 17β-estradiol, and 17α-ethinylestradiol by high-performance liquid chromatography, using fluorescence and diode array detectors. Estrogenic activity ranged from 9 to 77 ng L-1 of estradiol equivalents. The highest micropollutants concentrations were detected for bisphenol A (298.5 and 465.5 ng L-1), followed by 17α-ethinylestradiol (248 and 256.9 ng L-1), estriol (70.7 and 179.6 ng L-1), and 17β-estradiol (167 and 174.8 ng L-1) for surface and deep waters, respectively. The findings indicate significant risks for the Guanabara Bay ecosystem. No acute toxicity effects were observed in the V. fisheri assay. These data reflect the current environmental degradation situation of the bay’s waters and highlight the need for the systematic monitoring of this important estuary. ","PeriodicalId":39973,"journal":{"name":"Anuario do Instituto de Geociencias","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42227628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Estimação da Cobertura de Gelo Marinho nos Mares Antárticos de Weddell, Belingshausen e Amundsen com Redes Neurais Artificiais 用人工神经网络估计威德尔、贝林高森和阿蒙森南极海海冰覆盖情况

Anuario do Instituto de Geociencias Pub Date : 2022-06-21 DOI: 10.11137/1982-3908_2022_45_40763

Ricardo Bruno de Araújo Tenório, J. Fernandez, David Mendes, José Pedro Da Silva Júnior

引用次数: 0

Estudos de Casos de Trovoadas com Descargas Elétricas em Alagoas 阿拉格斯雷电放电案例研究

Anuario do Instituto de Geociencias Pub Date : 2022-06-15 DOI: 10.11137/1982-3908_2022_45_38477

Glenda Cristine de Oliveira Silva, N. Fedorova, Vladimir Levit

引用次数: 0

The Effect of Agricultural Modernization on Work Preferences in Batu, East Java, Indonesia 印尼东爪哇巴图农业现代化对工作偏好的影响

Anuario do Instituto de Geociencias Pub Date : 2022-06-15 DOI: 10.11137/1982-3908_2022_45_43036

Hamyana Yana, K. Hidayat, K. Sukesi, Y. Yuliati, Eva Soviana

引用次数: 2

Organic Farming: Is a Metamorphosis of Modern Agricultural Imperialism or a Postmodern Agricultural Model? 有机农业：是现代农业帝国主义的变形还是后现代农业模式？

Anuario do Instituto de Geociencias Pub Date : 2022-05-23 DOI: 10.11137/1982-3908_2022_45_49113

Hamyana Yana, K. Hidayat, K. Sukesi, Y. Yuliati

{"title":"Organic Farming: Is a Metamorphosis of Modern Agricultural Imperialism or a Postmodern Agricultural Model?","authors":"Hamyana Yana, K. Hidayat, K. Sukesi, Y. Yuliati","doi":"10.11137/1982-3908_2022_45_49113","DOIUrl":"https://doi.org/10.11137/1982-3908_2022_45_49113","url":null,"abstract":"The implementation of organic farming programs in Indonesia involves various actors and various interests in it. The relationship between actors and their interests has positioned organic agriculture at the intersection between modern agricultural camouflage and the antithesis of modern agriculture (postmodern agriculture). How did this happen? so this research is very important to provide a complete picture in describing the involvement of actors and power relations as one of the key factors that will determine theformulation of policies for developing organic agriculture in the future. This research used a qualitative method with a case study approach. Data collection techniques were carried out by in-depth interviews, observations, and document studies. The research data were analyzed concerning the Miles and Huberman (2002) framework, which consisted of stages of data reduction, analysis formulation, and concluding. The results showed that there were four typologies of actors, namely, type A actors oriented to spiritual values; actor type B oriented to moral values; type C actor is oriented to rational values and type D actor is oriented to political/powervalues. The struggle between actors is dominated by driving actors (advanced farmers or champions, state apparatus, capitalists) who have stronger knowledge power. The rhetoric and images narrated by the driving actors then become tools for domination to seize the rights of other actors with the interests and powers attached to each actor. The implementation of organic agriculture which is full of power interests puts organic farming programs in Indonesia trapped in a market trap and a poor meaning reduction of moral values, human values, spiritual values, and ecological values.","PeriodicalId":39973,"journal":{"name":"Anuario do Instituto de Geociencias","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47374963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Avaliação do Potencial de Captação de Água Subterrânea em Áreas Rurais de Municípios do Noroeste Fluminense-RJ, Brasil 巴西弗鲁米嫩塞RJ西北城市农村地区地下水收集潜力评估

Anuario do Instituto de Geociencias Pub Date : 2022-05-19 DOI: 10.11137/1982-3908_2022_45_41755

Andréa Alves Ferreira, Alfredo Akira Ohnuma Júnior, Marcelo Dos Santos Salomão

引用次数: 0