Repositório Institucional da Universidade Federal do Amapá - RIUNIFAP
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Tipo de item:Item, Cálculo aproximado do potencial eletrostático de um disco circular e um disco elíptico, com distribuição de carga homogênea, utilizando matemática elementar(UNIFAP - Universidade Federal do Amapá, 2026-07-21) SANTOS, Gustavo Maciel dos; GONZALES, Yony Walter Milla; http://lattes.cnpq.br/0374412747606865This work proposes an approximate methodology for determining the electrostatic poten tial generated by uniformly charged circular and elliptical disks using exclusively elementary mathematical tools. In contrast to the classical approach, which is based on differential and integral calculus, the proposed method relies on the geometric discretization of the surface charge distribution into successive rings, the use of finite summations, and algebraic simplification techniques. Initially, the methodology is developed for a uniformly charged circular disk, demonstra ting its convergence to the classical solution for the electrostatic potential. The procedure is then generalized to elliptical disks through an appropriate parametrization of the geometry, allowing the derivation of approximate expressions that incorporate the effects of eccentricity. The results show excellent agreement with the expected physical behavior, indicating that the corrections due to eccentricity appear as second-order terms relative to the circular case. In addition to reproducing the known solutions with good accuracy, the proposed methodology demonstrates that problems traditionally solved using integral calculus can be treated through systematic discrete procedures while preserving mathematical consistency and physical interpretation. Therefore, the method provides an alternative approach to the study of electros tatics and a valuable educational resource for teaching continuous charge distributions using elementary mathematical tools.Tipo de item:Item, Avaliação ecotoxicológica da água por contaminantes metálicos em Danio rerio na bacia hidrográfica do rio Pedreira, Amapá: uma abordagem no ensino de química(UNIFAP - Universidade Federal do Amapá, 2026-02-26) MENDES, Edinaldo de Souza; FLORENTINO, Alexandro Cezar; http://lattes.cnpq.br/6152994413893554; https://orcid.org/0000-0002-8880-9618Water contamination in Amapá, particularly by heavy metals and organic pollutants from agriculture and lack of sanitation, threatens environmental health and traditional populations. The Pedreira River, vital for local communities, becomes the focus of study to assess these risks. To evaluate the occurrence of pollutants in the Pedreira River basin and study their toxicological impacts on the biological model Danio rerio (zebrafish) at different stages of development, proposing a didactic approach for chemistry teaching. Water and sediment samples were collected at seven points along the river. Physico-chemical analyses and toxicity bioassays were performed with adult and embryo zebrafish, following OECD 236 protocols and CONAMA standards. Genotoxicity parameters (micronuclei) and morphological alterations were evaluated. Physico-chemical analyses revealed acidic pH (4.71) and low dissolved oxygen levels, outside CONAMA Class 2 standards. Bioassays indicated significant frequencies of genotoxic damage, such as micronuclei (up to 18.9%) and blebbed nuclei, as well as vacuolated cytoplasm at critical points (P5 with 33.33%), suggesting a risk to cell survival and persistent environmental pressure.Tipo de item:Item, Políticas afirmativas: um estudo da promoção de igualdade no Ensino Médio do IFAP - Campus Macapá(UNIFAP - Universidade Federal do Amapá, 2026-05-28) COSTA, Jaqueline Ramos da Silva e; GUIMARAES, Andre Rodrigues; http://lattes.cnpq.br/0146898361391391; https://orcid.org/0000-0003-1153-0771This study aims to analyze the impact of affirmative action policies implemented at the Federal Institute of Amapá (IFAP), Macapá Campus, in promoting equal educational opportunities among students enrolled in the Integrated High School programs from 2022 to 2024. Specifically, it seeks to identify and discuss the affirmative actions developed by the institution, examine the profile of students benefiting from the quota system, and assess how these policies influence access, retention, and completion processes. The research adopts a qualitative-quantitative and documentary approach, based on the analysis of legislation, institutional resolutions, reports, and pedagogical records available in the Unified Public Administration System (SUAP). The analyzed documents include Decree No. 7,234/2010 and Law No. 14,965/2024, which regulate the National Student Assistance Program (PNAES); Law No. 12,711/2012 and its revision by Law No. 14,723/2023, which establish the quota system; as well as IFAP Student Assistance Program Notice No. 06/2022. The results show progress in consolidating affirmative action policies at IFAP but also highlight challenges related to the effectiveness of student retention measures, reflected in gaps in pedagogical follow-up and social assistance. The increase in records in the ETEP section of SUAP indicates improvement in student monitoring and emphasizes the need for stronger institutional strategies for inclusion. It is concluded that affirmative action policies, when combined with student support and monitoring programs, are essential to reduce historical inequalities and promote a more inclusive and democratic public education system.Tipo de item:Item, Análise da percepção e prática dos enfermeiros na identificação de sinais de risco/atraso em crianças na atenção básica do município de Oiapoque: uma abordagem qualitativa(UNIFAP - Universidade Federal do Amapá, 2026-02-27) SOUSA, Ingrid Iara Picanço de; RIBEIRO, Tamyres de Oliveira; OLIVEIRA, Heluza Monteiro de; MONTEIRO, Renata Simões; http://lattes.cnpq.br/6590690714916966; http://lattes.cnpq.br/9595997591856672; https://orcid.org/0000-0002-6153-4562Childcare (puericulture) is a fundamental strategy within Primary Health Care for promoting child growth and development, enabling the early identification of risk signs or developmental delays. In this context, nurses play a central role in conducting childcare consultations, being responsible for the comprehensive assessment of the child, providing guidance to families, and making timely referrals when necessary. This study aimed to analyze nurses’ perceptions and practices in identifying signs of risk or developmental delay during childcare consultations in Primary Care in the municipality of Oiapoque, Amapá. It’s a qualitative, descriptive study conducted with nurses working in the Family Health Strategy, using semi-structured interviews. The analysis of textual data was carried out using IRAMUTEQ software, combined with Bardin’s content analysis. Six categories of analysis emerged, and the results showed that nurses recognize the importance of assessing child development; however, they face challenges related to professional training, structural limitations, high demand for care, and difficulties in the systematic use of the Child Health Handbook. It’s concluded that strengthening continuing education, improving working conditions, and valuing childcare consultations are essential to enhance the early identification of risk signs or developmental delays, contributing to comprehensive care and the reduction of health problems in children.It’s expected that this research will contribute positively to society and the academic community by expanding the understanding of nurses’ roles in identifying signs of risk or developmental delay during childcare consultations. Furthermore, it is hoped that the findings will support future research on the topic, encourage interest in improving child health care, and guide actions and strategies aimed at strengthening nursing care in Primary Health Care. Thus, the study is expected to contribute to the promotion of child health, the prevention of health problems, and the improvement of the quality of care provided to children and their families, especially in vulnerable contexts.Tipo de item:Item, Análise quantitativa dos casos confirmados de hepatite B e C no Brasil entre 2013 e 2023: um estudo epidemiológico(UNIFAP - Universidade Federal do Amapá, 2025-08-05) SANTOS, Lucas Souza Reis; SILVA, Cleyson Nascimento; SOUZA, Augusto Cardoso da Costa de; FECURY, Amanda Alves; http://lattes.cnpq.br/9314252766209613