Repositório UFSCar

For more information, visit: RI UFSCar

Instructions for authors: Click here

Explore by document type

Discover UFSCar’s academic and scientific output

Communities

Select a community to browse its collections.

View all

Recent Submissions

  • Thumbnail Image
    Item type:Item,
    Percepção e adaptação climática na cafeicultura
    (Universidade Federal de São Carlos, 2026-05-13)
    Ferreira , Caroline Alves
    ;
    Gallo , Anderson de Souza
    ;
    Magalhães , Leonardo Pinto de
    ;
    http://lattes.cnpq.br/2414115508284005
    ;
    http://lattes.cnpq.br/8771305776391428
    Coffee farming holds great socioeconomic importance in Brazil, the world's leading producer. In southern Minas Gerais, production is predominantly driven by family farmers who face challenges due to climate change. Shifts in weather patterns and temperatures have impacted coffee productivity and quality, necessitating the adoption of adaptation strategies. In this context, this study aims to analyze how climate change is perceived by coffee farmers and to investigate adaptation strategies and factors associated with the resilience of coffee agroecosystems. The first chapter presents a systematic literature review, conducted according to the PRISMA protocol, identifying key methodological approaches used in studies on climate perception in global coffee farming, as well as adaptation strategies and territorial factors influencing farmers' perceptions. The second chapter details a study conducted with coffee farmers affiliated with the Cooperative of Family Farmers of Poço Fundo and Region (COOPFAM) in southern Minas Gerais; it analyzes perceptions regarding the impacts of climate change on production, identifies adaptation strategies, and examines factors contributing to the strengthening of climate resilience in the region. Results from the systematic review indicate that territorial factors, production systems, and socioeconomic conditions directly influence how coffee farmers perceive and respond to climate events. The study with COOPFAM farmers found that key adaptive strategies include crop shading, production diversification, the adoption of new cultivars, and ecological soil management. Integrating farmers' local knowledge with environmental monitoring tools proved significant for understanding the resilience of coffee agroecosystems in the face of climate change, thereby contributing to the development of adaptation strategies better suited to the realities of family farming.
  • Thumbnail Image
    Item type:Item,
    Crescimento e produtividade de plantas não convencionais em sistemas silvipastoris sob orientações de plantio Norte/Sul e Leste/Oeste
    (Universidade Federal de São Carlos, 2026-08-28)
    Rossi, Ana Caroline
    ;
    Campana , Mariana
    ;
    Oliveira, Renata Evangelista de
    ;
    http://lattes.cnpq.br/1957836503940255
    ;
    http://lattes.cnpq.br/6777223792862756
    The conventional extensive livestock farming model generates significant environmental impacts, reinforcing the need for sustainable alternatives such as Silvopastoral Systems (SPS). This study evaluated the silvicultural response, biomass accumulation, and morphological composition of mulberry (Morus nigra L.), gliricidia (Gliricidia sepium (Jacq.) Walp), and tithonia (Tithonia diversifolia (Hemsl.) A. Gray) subjected to North/South (N/S) and East/West (E/W) planting orientations. The experiment was conducted at UFSCar, Araras-SP, using a completely randomized design with six replicates per treatment. Height, stem diameter, and canopy diameter were evaluated at 10, 20, and 30 days of growth, in addition to green mass production (GMP), dry mass (DM), dry matter content (DM%), and the leaf-to-stem ratio at 30 days of regrowth. Evaluations were performed every 10 days over a 12-month period, from March 2024 to February 2025. Data were analyzed using the SAS PROC MIXED procedure. There was no triple interaction (cycle/time/planting orientation) for the morphometric variables (P ≥ 0.058). In general, the E-W orientation favored initial vegetative vigor, increasing height and canopy diameter for mulberry, stem diameter for gliricidia, and both stem and canopy diameters for tithonia. For mulberry, the E-W arrangement increased fresh biomass yield (333 vs. 184 kg ha¹ cycle¹) and dry biomass yield (86.7 vs. 51.9 kg ha¹ cycle¹), while reducing dry matter content. For gliricidia and tithonia, the orientation did not alter biomass production or dry matter content. Morphological partitioning was also unaffected, maintaining mean leaf proportions of 706, 811, and 688 g kg¹ for mulberry, gliricidia, and tithonia, respectively. Peak biomass production occurred between October and January/February, coinciding with the period of greatest water and thermal availability. It is concluded that the E-W orientation favors initial development and can increase biomass productivity, particularly for mulberry. However, forage accumulation is strongly influenced by climatic seasonality, indicating that cutting or grazing management should be flexible and guided by morphological indicators, such as canopy height
  • Thumbnail Image
    Item type:Item,
    A importância das práticas culturais nas bibliotecas universitárias: um diagnóstico de caso da Biblioteca Comunitária da Universidade Federal de São Carlos
    (Universidade Federal de São Carlos, 2026-07-13)
    Zuccari, Beatriz Pontes de Barros
    ;
    Gracioso, Luciana de Souza
    ;
    http://lattes.cnpq.br/4898201916360294
    ;
    https://orcid.org/0000-0002-6320-4946
    ;
    http://lattes.cnpq.br/6125259415999106
    This study aims to explore the strategic importance of cultural practices in university libraries, re-signifying their role beyond the traditional storage of resources. The case diagnosis focuses on the Biblioteca Comunitária (BCo) at the Federal University of São Carlos (UFSCar), on the São Carlos campus, whose pioneering nature and extension function stand out for extending access and services to the external community, thus fulfilling the university's commitment to social development. The main objective is to map and describe in detail the cultural activities promoted by BCo’s Department of Cultural Action (DeAC) from 2017 to 2024, analyzing the continuity and transformation of its extension role in the face of the challenging post-pandemic adaptation. The methodology, of an exploratory and qualitative nature, is based on a literature review and the documentary analysis of the DeAC Annual Activity Reports (2017-2024). The research is expected to contribute to the understanding of the value of libraries as socio-cultural centers and to the proposal of guidelines that enhance the offer of cultural activities and strengthen the Library's role in comprehensive education and the democratization of access to culture.
  • Thumbnail Image
    Item type:Item,
    A representação do feminino no caminhar da(s) história(s): uma análise dos filmes Mulan 1998 e Mulan 2020
    (Universidade Federal de São Carlos, 0013-07-20)
    Mezzotero, Maria Eduarda
    ;
    Pires, Livía Maria Falconi
    ;
    Araujo, Lígia Mara Boin Menossi de
    ;
    http://lattes.cnpq.br/7893136450669304
    ;
    http://lattes.cnpq.br/3231722533625671
    For many centuries, the role of women in patriarchal society was to aspire to marriage—“a stable family environment, a welcoming home, well-behaved children, and a wife devoted to her husband.” (D’Incao, 2004, p. 187). Thus, the female subject was constructed and shaped by patriarchal society with a single purpose: to be a wife. Thus, the overall objective of this research is to examine the discourses about women that circulated in the 1990s, beginning with the 1998 film Mulan, and that continue to circulate well into the 21st century with its new live-action version, Mulan, released in 2020. The films tell the story of a young Chinese woman who disguises herself as a man and goes to war in place of her sick father. Mulan’s primary duty is to bring honor to her family through marriage and to fulfill her role in society as a woman. In the 1998 film Mulan, the main character saves the emperor from invaders, becomes a war heroine, and, upon returning home, becomes engaged to Captain Lee Shang, thereby fulfilling her goal of bringing honor to her family through marriage. However, the 2020 film Mulan introduces significant changes to its narrative, such as replacing Mushu with the Phoenix, the introduction of new female characters, female leadership, and the fact that—without Captain Lee Shang—Mulan’s goal of returning home and getting married remains unfulfilled, and the honor she brings home is that of having saved the emperor. Thus, as a specific objective, we aim to analyze discourses on women through the linguistic and visual materiality of Disney films that circulate and have circulated in society. To this end, we will draw on the concepts of the discursive subject, utterance, and discourse from the perspective of French-school Discourse Analysis and the fruitful discussions within Discourse Analysis in Brazil. This study concludes that although Mulan 1998 and Mulan 2020 share the same underlying principles regarding the concepts of honor, femininity, and social status, the live-action film, in turn, shifts and challenges these concepts by introducing different possibilities for the representation of women. In the 1998 animated film, it is evident that Mulan must break with standards of femininity and prove her ability to occupy spaces traditionally reserved for male characters. The live-action film, on the other hand, by presenting women who occupy different social positions, thereby produces meanings of greater autonomy and multiplicity in the representation of women.
  • Thumbnail Image
    Item type:Item,
    Introdução à eletromigração controlada em materiais cerâmicos: uma revisão bibliográfica
    (Universidade Federal de São Carlos, 2026-09-21)
    Piazzi, Gabriel
    ;
    Motta, Maycon
    ;
    http://lattes.cnpq.br/8340540626164812
    ;
    https://orcid.org/0000-0002-5494-7705
    ;
    http://lattes.cnpq.br/7711406174484567
    Electromigration became established in the early days of microelectronics as a failure mechanism in metallic interconnects, but electrically driven mass transport can also be employed to enable controlled post-fabrication modification of devices. This work presents a literature review of the historical development, physical foundations, and controlled use of electromigration, with emphasis on ceramic materials, particularly complex oxides, with a primary focus on YBa2Cu3O7−δ (YBCO). It is organized into four thematic areas: classical studies of metals, mass-flux and reliability models, fabrication and control techniques, and studies of oxygen migration in functional oxides. In metals, the discussion addresses how effective force, Joule heating, microstructure, flux divergence, and mechanical stresses lead to the formation of voids and hillocks, which are classical outcomes of electromigration. In ceramics, the analysis is extended through electrochemical potential and defect chemistry, since the displacement of ions and vacancies alters stoichiometry, oxidation states, and electronic properties. YBCO is adopted as the central case because oxygen occupancy and ordering in the CuO chains regulate hole doping in the CuO2 planes, allowing its resistance and superconducting critical temperature to be modified. The fabrication of constrictions and nanogaps, resistance- or conductance-based feedback, electropulsing, and polarity reversal are also examined as strategies for controlling electromigration. Taken together, the literature review and analyses conducted show that the same mass transport process that limits interconnect reliability can, when controlled, be employed as a nanofabrication technique for defect nanoengineering and the localized tuning of material and device properties.