Anais da Academia Brasileira de Ciencias最新文献_第7页

Ultrasound-based control of water hyacinth proliferation in tropical reservoirs: experimental design and acoustic attenuation modeling. 基于超声的热带水库水葫芦增殖控制：实验设计和声衰减模型。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250433

Daniel M Sobral, Gleice Paula DE Araújo, Bruno Augusto C Roque, Mariana S C Lourenço, Leonardo B Dos Santos, Mohand Benachour, Valdemir A Dos Santos

{"title":"Ultrasound-based control of water hyacinth proliferation in tropical reservoirs: experimental design and acoustic attenuation modeling.","authors":"Daniel M Sobral, Gleice Paula DE Araújo, Bruno Augusto C Roque, Mariana S C Lourenço, Leonardo B Dos Santos, Mohand Benachour, Valdemir A Dos Santos","doi":"10.1590/0001-3765202620250433","DOIUrl":"https://doi.org/10.1590/0001-3765202620250433","url":null,"abstract":"The proliferation of floating macrophytes such as Eichhornia crassipes, driven by eutrophication, compromises the ecological and operational quality of hydroelectric reservoirs. This study developed and evaluated an ultrasonic (US) system for controlling this species. Controlled experiments tested frequencies of 40, 80, and 120 kHz, identifying 40 kHz as the most effective. E. crassipes seedlings were exposed daily to US in pure and eutrophic water. Growth and seed production were assessed through physical, visual, and photographic analyses. US exposure reduced growth rates, inhibited flowering, and decreased seed production compared to the control group. Acoustic modeling indicated an average attenuation coefficient of 1.00 × 10⁻⁴ dB/cm in eutrophic water. Based on simulated acoustic signal decay derived from experimentally obtained attenuation coefficients, the system using piezoelectric transducers operating at 40 kHz showed a theoretically estimated effective operational range of up to approximately 50 m per transducer, not validated by field tests. The system features an adaptable design and consistent performance across different water compositions, offering a scalable approach for macrophyte control. Continuous environmental monitoring is recommended to ensure efficiency and ecological safety. Overall, US represents a promising and sustainable alternative for macrophyte management, considering potential effects on non-target organisms and environmental variability.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20250433"},"PeriodicalIF":1.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Vertical Earthquake Ground Motion on the Seismic Response of Base-Isolated Reinforced Concrete Buildings. 垂直地震动对基础隔震钢筋混凝土建筑物地震反应的影响。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620251194

Mehmet Firat Karapinar, Baris Sayin

{"title":"Effects of Vertical Earthquake Ground Motion on the Seismic Response of Base-Isolated Reinforced Concrete Buildings.","authors":"Mehmet Firat Karapinar, Baris Sayin","doi":"10.1590/0001-3765202620251194","DOIUrl":"https://doi.org/10.1590/0001-3765202620251194","url":null,"abstract":"This study investigates the effects of vertical ground motion on the seismic design of base-isolated structures. Two soil classes were considered, and for each class, near-fault and far-fault ground motions were selected, resulting in four seismic scenarios. Earthquake acceleration records were identified for each scenario and scaled to the Maximum Considered Earthquake (MCE) and Design Basis Earthquake (DBE) hazard levels. A finite element model of a base-isolated building was developed, and nonlinear time-history analyses were performed to evaluate the influence of vertical ground motion on structural response. The results show that the vertical earthquake component significantly increases isolator forces, overturning moments, vertical displacements, and vertical accelerations. These effects are considerably more pronounced under near-fault ground motions than under far-fault conditions. In addition, differences in soil class further amplify the influence of vertical ground motion on the seismic response of base-isolated structures. The findings demonstrate that both fault distance and site conditions should be explicitly considered in the seismic design of base-isolated buildings. Furthermore, limiting the ratio of the shorter plan dimension to the building height, while accounting for fault distance and soil class, may contribute to safer and more reliable seismic design.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20251194"},"PeriodicalIF":1.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strengthening urban waste governance: Integrating data and policy in the northern coast of Rio Grande do Sul, Brazil. 加强城市垃圾治理：在巴西南巴西格兰德州北部海岸整合数据和政策。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250407

Marília Cerciná, Nelson Luiz S Gruber, Darci B Campani, Juan Adolfo Chica-Ruiz

{"title":"Strengthening urban waste governance: Integrating data and policy in the northern coast of Rio Grande do Sul, Brazil.","authors":"Marília Cerciná, Nelson Luiz S Gruber, Darci B Campani, Juan Adolfo Chica-Ruiz","doi":"10.1590/0001-3765202620250407","DOIUrl":"https://doi.org/10.1590/0001-3765202620250407","url":null,"abstract":"Inadequate infrastructure for the final disposal of solid waste increases the vulnerability of coastal areas to environmental impacts. Poor waste management in these regions leads to severe marine contamination, as land-based waste reaches the oceans through rivers, storm water, and improper land disposal, threatening marine life. This study analyzes the integration between the National Sanitation Information System and the National Solid Waste Policy in regulating the Municipal Integrated Solid Waste Management Plans, focusing on coastal municipalities. A descriptive documentary approach was adopted, involving an analytical review of urban sanitation indicators. The results reveal significant governance gaps and the need for improved coordination in coastal management. In municipalities along the Northern Coast of Rio Grande do Sul, weak integration was found between data repositories and legislation, with extensive and redundant reporting forms. Strengthening Sanitation Information System through alignment with international standards, regulatory mechanisms, social participation, and circular economy principles - especially through the inclusion of low-income waste pickers - can enhance transparency and accountability. Integration with reports from the United Nations Environment Programme would enable the system to become a global reference, contributing to sustainable coastal management and climate change mitigation.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20250407"},"PeriodicalIF":1.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Autonomic dysfunction in individuals with metabolically healthy obesity: a cross-sectional study. 代谢健康型肥胖患者的自主神经功能障碍：一项横断面研究

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250712

Alice P Duque, Christiane F S Araujo, Ilana C S Nogueira, Renato Cerceau, Andrea DE Lorenzo, Grazielle V B Huguenin, Mauro Felippe F Mediano, Luiz Fernando Rodrigues Junior

{"title":"Autonomic dysfunction in individuals with metabolically healthy obesity: a cross-sectional study.","authors":"Alice P Duque, Christiane F S Araujo, Ilana C S Nogueira, Renato Cerceau, Andrea DE Lorenzo, Grazielle V B Huguenin, Mauro Felippe F Mediano, Luiz Fernando Rodrigues Junior","doi":"10.1590/0001-3765202620250712","DOIUrl":"https://doi.org/10.1590/0001-3765202620250712","url":null,"abstract":"The identification of autonomic alterations in metabolically healthy obesity could be an additional parameter for elucidating if this phenotype of obesity only represents a transition stage to the development of metabolically unhealthy obesity. So, this study aimed to assess the presence of autonomic dysfunction in individuals with metabolically healthy obesity. We conducted a cross-sectional study that randomly recruited individuals (≥18 years old), being excluded those on sick leave, pregnant or lactating women. According to the body mass index and International Diabetes Federation criteria for metabolic syndrome, the individuals, stratified as metabolically healthy eutrophic; metabolically healthy obesity; or metabolically unhealthy obesity were included in the analysis. Heart rate variability (HRV), electrocardiography, orthostatic test, and orthostatic hypotension test were used to evaluate autonomic function. Our findings evidenced that metabolically healthy obesity individuals exhibited alterations in HRV, in orthostatic hypotension test and in electrocardiographic parameters for ventricular repolarization, compared to metabolically healthy eutrophic individuals. Therefore, we concluded that metabolically healthy obesity is associated with the occurrence of autonomic dysfunction, which suggests that it can be, in fact, a transition stage to the development of metabolically unhealthy obesity.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 3","pages":"e20250712"},"PeriodicalIF":1.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Neighboring species hinder the anatomical traits of a non-native and invasive aquatic grass in Pantanal. 邻近物种阻碍了潘塔纳尔一种非本地和入侵水生草的解剖特征。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250744

Vanessa C Harthman, Jorciane R Seren, Marcus Vinícius S Urquiza, Márcio José Silveira

{"title":"Neighboring species hinder the anatomical traits of a non-native and invasive aquatic grass in Pantanal.","authors":"Vanessa C Harthman, Jorciane R Seren, Marcus Vinícius S Urquiza, Márcio José Silveira","doi":"10.1590/0001-3765202620250744","DOIUrl":"https://doi.org/10.1590/0001-3765202620250744","url":null,"abstract":"Plant interactions significantly influence individual growth, with competition for resources being a key factor. However, it's still unclear if neighboring species affect the anatomical development of aquatic plants. This 60-day factorial experiment investigated the anatomical responses of three Pantanal macrophytes: the non-native Urochloa arrecta and native species Ipomoea carnea and Polygonum ferrugineum, grown alone and with neighbors. After the experiment, plants were analyzed anatomically using standard techniques, Image J, and a two-way ANOVA. Results showed that neighboring I. carnea and P. ferrugineum inhibited the formation of certain anatomical structures in U. arrecta, such as mesophyll and vascular bundles. This inhibition could reduce U. arrecta's success in the Pantanal, as these structures are vital for optimal plant development. Conversely, U. arrecta's cortex structures were stimulated by neighboring species, potentially enhancing its resistance and competitive ability. This finding aligns with previous studies showing that higher native species richness can inhibit the morphological development of non-native species, suggesting this relationship extends to anatomical structures as well.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 suppl 1","pages":"e20250744"},"PeriodicalIF":1.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Marking methods for tracking and recapturing snakes around the world: An integrative review. 世界各地追踪和重新捕获蛇的标记方法：综合综述。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250381

Vanessa DO N Barbosa, Jéssica Monique DA S Amaral, Adrian Antonio Garda, Frederico Gustavo R França

{"title":"Marking methods for tracking and recapturing snakes around the world: An integrative review.","authors":"Vanessa DO N Barbosa, Jéssica Monique DA S Amaral, Adrian Antonio Garda, Frederico Gustavo R França","doi":"10.1590/0001-3765202620250381","DOIUrl":"https://doi.org/10.1590/0001-3765202620250381","url":null,"abstract":"Mark-recapture studies using marking techniques are crucial for understanding the ecology and behavior of snakes. This review aims to identify and compare the most common marking methods employed in snake ecology research, from traditional techniques to modern, innovative approaches. These methods facilitate global research on snake individualization, tracking, and recapture. We evaluated 1.533 papers encompassing over 482 species, the reviewed studies span 78 countries, reflecting a wide geographical distribution of snake marking research. The United States, Canada, Australia, and Brazil have contributed the most studies. Among the most widely used methods, radio telemetry remains essential for despite tracking its invasiveness and associated risks for snake's welfare. More recent innovations, such as fluorescent powder and elastomer marking, offer cost-effective, non-invasive alternatives, applicable across diverse species and habitats. Microchipping, a well-established method, continues to be a reliable option for long-term monitoring, with successful recaptures documented after over 30 years. Natural marks, recognized through photographs and drawings. This paper the importance of continually refining snake marking techniques to balance research efficacy with animal welfare. Future advancements should focus on improving durability, facilitating recapture, and minimizing disruptions to snake ecology, health, and behavior, ultimately supporting more effective autecological and population studies.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 suppl 1","pages":"e20250381"},"PeriodicalIF":1.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Traditional Architecture and Energy Conservation: The Role of Spatial Configuration in Hot and Dry Climates. 传统建筑与节能：空间结构在干热气候中的作用。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250949

Ruşen Ergün

{"title":"Traditional Architecture and Energy Conservation: The Role of Spatial Configuration in Hot and Dry Climates.","authors":"Ruşen Ergün","doi":"10.1590/0001-3765202620250949","DOIUrl":"https://doi.org/10.1590/0001-3765202620250949","url":null,"abstract":"In this study, the effect of spatial configurations on the cooling load in the summer parts of traditional houses in Diyarbakır was investigated. The main objective is to analyse the impact of different spatial configurations on energy consumption, to draw lessons from traditional architecture and to create a guide for modern sustainable building design. This study a systematic methodology was employed, utilising a literature review, case study, space syntax theory and DesignBuilder energy analysis. The cooling load of a total of 53 different scenarios, organised according to spatial configuration parameters, has been analysed. As a result of qualitative and quantitative data, the relationship between semi-open and enclosed spaces directly affects the cooling load. An increase in the spatial depth level can reduce the cooling load to around 50%. In traditional architecture, the proper interaction of the iwan with other spaces has been shown to reduce the cooling load by up to 23%. However, it should be noted that internal heat transfer has the potential to increase the cooling load by up to 10%. These results indicate that spatial configurations influence indoor cooling load. The limited research on their impact on indoor thermal comfort underscores the significance of this study.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 suppl 1","pages":"e20250949"},"PeriodicalIF":1.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphology and morphometry of Pseudoproleptus sp. (Nematoda: Cystidicolidae) parasitic on amazonian fish. 寄生在亚马逊河鱼类上的拟虫（线虫纲：囊虫科）的形态和形态计量学。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620251076

Tallytha N P DA Silva, Gabrielly P Alves, Ricardo Luis S Santana, Yan Rafael G S Brigida, Raul Henrique S Pinheiro, Elane G Giese

{"title":"Morphology and morphometry of Pseudoproleptus sp. (Nematoda: Cystidicolidae) parasitic on amazonian fish.","authors":"Tallytha N P DA Silva, Gabrielly P Alves, Ricardo Luis S Santana, Yan Rafael G S Brigida, Raul Henrique S Pinheiro, Elane G Giese","doi":"10.1590/0001-3765202620251076","DOIUrl":"https://doi.org/10.1590/0001-3765202620251076","url":null,"abstract":"Nematodes of the family Cystidicolidae Skryabin, 1946 represent a complex group of parasites of aquatic organisms. They are present in freshwater, estuarine, and marine environments, with fish as intermediate, paratenic, and definitive hosts. This study adds relevant data on the morphology, morphometry, and parasitic ecology of third-stage larvae of Pseudoproleptus Khera, 1953 in fish consumed by riverside populations in the Amazon. A total of 92 fish specimens were acquired between March 2024 and January 2025 from artisanal fishing, distributed among five species: Astronotus ocellatus; Cichla ocellaris; Cynoscion microlepidotus; Gymnotus carapo; and Hoplerythrinus unitaeniatus. Nematodes were recovered free and encysted in the visceral peritoneum, coelomic cavity, and lumen. The parasites collected had morphological characteristics compatible with the genus Pseudoproleptus. This is the first record of Pseudoproleptus infection in Gymnotus carapo and has provided new data on the biodiversity of larvae that parasitize fish in the Marajó region, Pará, Brazilian Amazon.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"98 suppl 1","pages":"e20251076"},"PeriodicalIF":1.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A machine learning and neural network approach to flood forecasting in the Wupper river. 基于机器学习和神经网络的伍珀河洪水预报。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250485

Gabriel W C Rocha, Alberto B DE Palhares Júnior, Joab M Varela, Eliardo G DA Costa, Rafael Chaves

引用次数: 0

Beneficial bacteria improve the growth of Mimosa flocculosa Burkart seedlings under reduced fertilizer application. 减肥条件下有益菌对含羞草幼苗生长有促进作用。

IF 1.2 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2026-08-24 eCollection Date: 2026-01-01 DOI: 10.1590/0001-3765202620250989

Rosana M DA Mota, Carlos André Stuepp, Rosimeri O Fragoso, Leticia Prestes, Jesiane Stefania S Batista

引用次数: 0