Navegando por Data de Publicação, começando com "2024-04-05"

Filtrar resultados por ano ou mês

Agora exibindo 1 - 3 de 3

Proposição de uma Arquitetura Baseada na Tecnologia Blockchain para Logística Reversa: Um Estudo em uma Indústria de Painéis de Madeira
(Universidade Federal de São Carlos, 2024-04-05) Barretti, Jayson Wilson; Mendes, Juliana Veiga; https://lattes.cnpq.br/5692633697407656; https://orcid.org/0000-0003-4514-2558; https://lattes.cnpq.br/5717421131776851; https://orcid.org/0000-0003-3843-3760
Given the environmental crisis resulting from the rampant consumption of natural resources and the lack of material and waste reuse, organizations are taking responsibility for adopting impactful measures to mitigate environmental and societal damage. The convergence of environmental, social, and governance aspects through ESG is essential for promoting sustainable resilience. In this context, the present study proposes a blockchain-based architecture to reintegrate waste into the production process in manufacturing companies. Objectives include identifying and applying blockchain architectures to facilitate this return, aiming to investigate their support for reverse logistics and production planning, creating a secure and decentralized technological ecosystem for real-time data transmission and material tracking, promoting waste reuse, and driving sustainability. The methodology adopted encompasses theoretical research to substantiate the topics addressed, the proposition of the blockchain architecture to enable the return of materials to manufacturing, and its conceptual application in a reconstituted wood panel industry. The delimitation of the work is based on theoretical research and a systematic literature review, establishing criteria for content analysis and reporting of results in the proposal of a conceptual architecture and its theoretical exemplification of application in the cited industry. Specialized literature highlights blockchain as advantageous for participants in reverse supply chains; however, there are no studies on its application in manufacturing, especially through reverse logistics. This research concludes the relevance of blockchain technology for sustainable supply chain management, offering valuable insights to science by exploring its traceability and transparency capabilities. The implications of promoting sustainable practices and reducing natural resource consumption can foster more sustainable societies. In the meantime, integrating blockchain with other emerging technologies offers opportunities to redesign processes, increase efficiency, and adopt more sustainable business models for managers and organizations.
Avaliação da influência de diferentes solos na degradação de hidrogel de amido modificado com EDTAD
(Universidade Federal de São Carlos, 2024-04-05) Moura-Murari, Adriana Sheyla; Delforno, Tiago Palladino; https://lattes.cnpq.br/8149468011291406; https://orcid.org/0000-0002-1705-0763; Duarte, Iolanda Cristina Silveira; https://lattes.cnpq.br/2626035341263254; https://orcid.org/0000-0002-9141-1010; https://lattes.cnpq.br/2458536523108741; https://orcid.org/0000-0001-7163-9141
This study evaluated the influence of the degradation of a new hydrogel produced from EDTAD-modified starch in two different soils and the bacterial community involved in this process. The soils are an argisol, which was called "soil A", and a red oxisol, called "soil B". The soils were characterized and the argisol presented 12.4% of organic matter and pH 5.1, and the red oxisol, 11.6% of organic matter and pH 4.6. The argisol also has more residual soil moisture and higher amounts of micro and macronutrients, such as phosphorus, calcium, magnesium, and other physical characteristics such as cation exchange capacity, while the oxisol has more calcium phosphate and aluminum. The biodegradation test was performed using the Bartha respirometric method, measuring biodegradation by titrating the KOH solution that captured theCO2 emitted by the microbiota present in the respirometers with soil and hydrogel sample. It was observed that the biodegradation of the hydrogel in the argisol was more efficient, but more thorough and linear. After the end of the degradation experiments, the soil DNA was extracted from the DNA and sequenced for a qualitative analysis of the existing microorganisms. 340 to 480 genetic profiles were found in each one of the samples, with the highest diversity being in the soil sample B with hydrogel post-biodegradation, and the lowest, in soil A post-biodegradation. The fact that two different soils were used in this study shows how important their physicochemical properties are in the activity of the microorganisms present in the biodegradation process, since the sample incubated in the soil, richer in organic matter (albeit with a slight difference), micro and macronutrients and higher acidity obtained a more complete and uniform biodegradation, while soil B, with opposite characteristics, obtained a lower biodegradation of the hydrogel, even though it was incubated for a longer time, a fact that may have been influenced by a higher concentration of aluminium, which influences a lower bacterial activity.
Restauração ecológica por semeadura direta: trajetória e análise multicriterial
(Universidade Federal de São Carlos, 2024-04-05) Costa, Glória Fabiani Leão da; Piña-Rodrigues, Fátima Conceição Márquez; https://lattes.cnpq.br/1475369713141675; https://orcid.org/0000-0001-8713-448X; https://lattes.cnpq.br/7510204418276540; https://orcid.org/0000-0001-5964-276X
Direct seeding is a promising and constantly evolving forest restoration technique. Monitoring your trajectory is essential to identify gaps and improvements. This work was divided into two stages, where, in Chapter 1, we sought to analyze the trajectory of a direct seeding area over 60 months; and in Chapter 2, evaluate whether direct seeding was efficient in restoring ecological processes essential for its stability, resilience and reliability. For the trajectory, monitoring was carried out at 30 days, 24 and 60 months in permanent plots, the composition, diversity, phytosociology and dynamics were evaluated. To evaluate ecological functions, a protocol based on the MESMIS method was used, obtaining the Ecological Functionality Consolidation Index (EFCI), with 25 indicators, defined by descriptors and reference scenarios. Sowing (SD) was compared with areas of forest remnants (AR) and restoration area by planting seedlings (RAD). At 60 months, the area had a density of 14,031 plants.ha-1. The plant assemblage was able to maintain the composition of established species, with an increase in richness (S=36), without the exclusion of any. SD presented higher values in the descriptors of soil fertility (0.07 SD; 0.06 RAD; 0.08 AR) and functional diversity (0.08; 0.06; 0.15) compared to RAD, but demonstrated the lowest value for community diversity (0.06; 0.07; 0.10), control and management (0.06; 0.08; 0.37) and soil and litter protection (0.15; 0. 17; 0.23). Over 60 months, the trajectory of the plant assemblage demonstrated stability in its composition, enabled the entry of new species, and presented a structure similar to natural forests in the initial stage of succession. SD demonstrated potential for the return of ecological functions, requiring the inclusion of adaptive management and continuous monitoring in the coming months.