https://repositorio.ufpb.br/jspui/handle/123456789/11131 Sat, 02 May 2026 03:17:17 GMT 2026-05-02T03:17:17Z https://repositorio.ufpb.br/jspui/handle/123456789/37985 Título: A compostagem como estratégia para a bioeconomia: revisão de literatura e perspectivas futuras Autor(es): Oliveira, Nathália Vitória Alves de Orientador: Nobrega, Claudia Coutinho Abstract: The bioeconomy is based on the sustainable use of renewable biological resources as an alternative to the linear economic model dependent on fossil resources. In this context, composting stands out as a strategic technology for the valorization of the organic fraction of solid waste, promoting nutrient cycling and reintegration of materials into productive systems. This study aimed to analyze, through a systematic literature review, how composting has been addressed as a bioeconomy strategy between 2016 and 2024, identifying scientific trends, thematic clusters, and research gaps. The methodology followed the PRISMA protocol, with data collection conducted in the Scopus database, initially identifying 140 documents, of which 56 articles composed the final corpus. In addition to the systematic review, a bibliometric analysis was performed using VOSviewer software, including co-authorship, keyword co-occurrence, citation, bibliographic coupling, and co-citation analyses. The results indicated recent growth in scientific production, with emphasis on Asian countries, particularly India, China, and Malaysia, alongside significant European participation. Consolidated thematic clusters were identified, focusing on organic waste valorization, integration between composting and anaerobic digestion, environmental sustainability, and circular economy approaches. Keyword analysis demonstrated strong interrelation among bioeconomy, composting, waste management, and sustainability, confirming the conceptual consolidation of composting as an operational tool of circular bioeconomy. However, gaps remain regarding the integration of environmental, economic, and governance assessments. It is concluded that composting represents a key technology for the transition toward sustainable production systems, contributing to impact mitigation, nutrient recovery, and the strengthening of bio-based value chains. Editor: Universidade Federal da Paraíba Tipo: TCC Fri, 24 Apr 2026 00:00:00 GMT https://repositorio.ufpb.br/jspui/handle/123456789/37985 2026-04-24T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/37891 Título: Hortaliças como bioindicadoras do efeito da toxicidade de fármacos anti-inflamatórios Autor(es): Aguiar, Hellen Loyse Sousa Orientador: Rocha, Elisangela Maria Rodrigues Abstract: The significant increase in the consumption of anti-inflammatory drugs has intensified concerns regarding their presence in the environment and the potential ecotoxicological effects associated with them. This study aimed to evaluate the acute phytotoxic effect of anti-inflammatory drugs through bioassays using lettuce and cabbage seeds. Initially, a bibliographic survey was conducted in scientific databases in order to identify gaps related to the use of vegetables in ecotoxicological assays involving these compounds. In the experimental stage, germination bioassays were carried out under controlled conditions, with seed exposure to concentrations of 50, 100, 125, and 150 mg/L, in addition to a control with distilled water, under incubation for one hundred and twenty hours. Germination and the initial development of seedlings were evaluated, with determination of the Germination Index (GI) for classification of the phytotoxic effect. The results of the bibliographic survey revealed a concentration of studies on certain plant species, especially lettuce, and the absence of investigations using cabbage seeds, indicating a relevant scientific gap. The results of the phytotoxicity tests showed that the drugs presented distinct effects between the species, with diclofenac sodium being the compound with the highest phytotoxic potential for both seeds, promoting greater inhibition of initial growth, presenting GI values of 26.90% (100 mg/L) for lettuce and 24.44% (150 mg/L) for cabbage. Ibuprofen showed variable toxicity; at lower concentrations it showed less toxic effects, being non-phytotoxic at the concentration of 100 mg/L (GI: 99.61%) for lettuce and moderately phytotoxic at the concentration of 100 mg/L (GI: 76.52%) for cabbage, while paracetamol presented a comparatively lower impact. It is concluded that the evaluated vegetables demonstrated sensitivity to the presence of the tested anti-inflammatory drugs, reinforcing the importance of ecotoxicological studies and environmental monitoring strategies for pharmaceutical residues. Editor: Universidade Federal da Paraíba Tipo: TCC Tue, 17 Mar 2026 00:00:00 GMT https://repositorio.ufpb.br/jspui/handle/123456789/37891 2026-03-17T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/37802 Título: Análise da influência da densidade amostral na interpolação batimétrica por Krigagem: estudo de caso no Açude Pacatuba Autor(es): Amorim, Thomás Vinícius Silva de Orientador: Melo, Davi de Carvalho Diniz Abstract: Efficient water resource management is a constant challenge, particularly in regions with high rainfall variability, where water availability heavily depends on surface reservoir storage. Effective management requires precise knowledge of a reservoir's actual capacity and submerged topography. Bathymetric surveys provide this essential data, yet their execution is time-consuming, infrastructure-intensive, and costly, raising a critical question: what is the necessary sample density to achieve reliable volumetric calculations while avoiding both under-sampling and excessive effort? This study analyzes the influence of sample density on the accuracy of reservoir volume estimates. Data were acquired using a single-beam echo sounder and interpolated via ordinary kriging in a Python environment to identify the optimal balance between operational cost and estimation accuracy. The Pacatuba Reservoir (Sapé-PB, Brazil) was used as a case study, with 12,034 depth points collected on October 30-31, 2024. Depth data were interpolated using different variogram models (spherical, exponential, Gaussian, and linear) and spatial resolutions (20 m and 10 m), with each configuration's performance evaluated through cross-validation. The exponential variogram proved most suitable, demonstrating the lowest error and best fit (RMSE = 0.069 m; MAE = 0.037 m; R² ≈ 0.999). A 10 m resolution was established as standard, as further reductions did not yield significant changes in estimated volume. To assess the impact of sample density, 100 independent interpolations were performed for each percentage of data points used (2.5% to 80%), enabling the calculation of means, standard deviations, and coefficients of variation. Results indicated that densities ≤ 5% produce inconsistent volumes with high dispersion. From 12.5% of the points, reliable estimates were achieved (RMSE = 0.31 m; CV = 3.8%). Using 25% of the points, variability became negligible (RMSE = 0.01 m; CV = 0.3%), and volumes matched the reference value. Thus, the range of 12.5% to 25% represents the optimal trade-off between sampling cost and volumetric precision, confirming the robustness of the methodology. Editor: Universidade Federal da Paraíba Tipo: TCC Mon, 29 Sep 2025 00:00:00 GMT https://repositorio.ufpb.br/jspui/handle/123456789/37802 2025-09-29T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/37801 Título: Estudo de caso: utilização do sistema de painéis monolíticos em EPS como alternativa ao sistema tradicional de construção em concreto armado e alvenaria. Autor(es): Oliveira, Thiago Queiroz Vilar Orientador: Severo, Cibelle Guimarães Silva Abstract: This article presents a case study on the use of monolithic expanded polystyrene (EPS) panels as an alternative to traditional reinforced concrete and masonry construction systems. The main objective was to qualitatively analyze the system, identifying the stages of the construction process most susceptible to failures that could compromise the structural and functional performance of the building, as well as to evaluate its advantages and disadvantages in terms of performance and sustainability.The methodology adopted consisted of directly monitoring the construction of a high-end single-family residence. Photographic records, field diaries, and systematic observations of the construction stages were collected, allowing for the technical characterization of the system, the analysis of the execution conditions, and the comparison with the usual practices of the conventional system.The results pointed to significant limitations in the foundation, installation, mortar, and prestressed slab stages, which were highly complex. On the other hand, the assembly of EPS panels presented relevant advantages, such as speed, lightness, waste reduction, and low resource consumption, in addition to the rapid adaptation of the workforce. The installation phases demonstrated ease of execution. Finally, prestressed slabs represented schedule gains, in addition to other aspects that will be mentioned throughout the study.It is concluded that the monolithic EPS system has competitive potential as a sustainable and efficient alternative, but its practical application depends directly on adequate planning, skilled labor, and the use of appropriate equipment. The absence of these factors compromised the quality and productivity observed in the study. For future research, we recommend analyzing pathologies in buildings completed with the system, conducting financial feasibility studies in high-end construction projects, and investigating thermoacoustic performance in order to broaden the understanding of its applicability in the context of Brazilian civil construction. Editor: Universidade Federal da Paraíba Tipo: TCC Thu, 02 Oct 2025 00:00:00 GMT https://repositorio.ufpb.br/jspui/handle/123456789/37801 2025-10-02T00:00:00Z