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Now showing items 11-20 of 1296
Diferentes sons e tons em aulas de matemática: um estudo sobre frações
(Universidade Federal de São Carlos, 2022-06-30)
The present work aims to analyze the context of being a teacher and inquirer of one's own practices in the scope of mathematics education in elementary school, which presumes to find conceptions formed by experiences of ...
16º problema de Hilbert: uma motivação para o estudo de funções periódicas
(Universidade Federal de São Carlos, 2022-02-22)
Periodic situations are found in many aspects of general knowledge, such as the measurement of hours in a day, the movement of the waves and the translation of celestial bodies. Perhaps this is why the study of journals ...
Synthesis and characterization of CH3NH3SnI3, Mn doped CH3NH3SnI3 and oxygen-deficient TiO2 as visible-light active semiconductors
(Universidade Federal de São Carlos, 2020-02-14)
CH3NH3SnI3 is an environmentally-friendly (lead-free) perovskite whose synthesis depends on SnI2. Some disadvantages of SnI2 include high cost and tin(IV) contamination. Thus, SnSO4 and C16H30O4Sn are presented as cheaper ...
O impacto de contratos públicos na atuação de cooperativas de coleta seletiva: estudo de casos no interior de São Paulo
(Universidade Federal de São Carlos, 2022-07-28)
The selective collection is important from the environmental, economic, and social perspectives. However, the autonomous agents, who informally work on this, have no aid, protection or visibility. Therefore, their grouping ...
Impactos da pandemia da Covid-19 da gestão de resíduos recicláveis nos municípios de Belo Horizonte (MG), Curitiba (PR) e São Paulo (SP)
(Universidade Federal de São Carlos, 2022-06-26)
The spread of Covid-19 has limited the maintenance and development of various activities in the world. The population's participation in segregation and recycling in the recyclable solid waste sector is essential to promote ...
Desenvolvimento de um algoritmo de planejamento de trajetória em ambientes desconhecidos e não estruturados para UAVs
(Universidade Federal de São Carlos, 2021-08-30)
To make a UAV (Unmanned Aerial Vehicle) autonomous, it must perform actions without human interference in its missions. Regardless of the area of operation, several autonomous UAV missions require path planning, being able ...
Co-cristalização da curcumina com d-manitol: caracterização e aplicações sobre larvas do Aedes aegypti (Linnaeus, 1762)
(Universidade Federal de São Carlos, 2021-07-27)
The search for new compounds to eliminate Aedes aegypti mosquito larvae is a strategy used by several researchers. Brazil, for example, has been facing major problems due to the high number of cases of arboviruses transmitted ...
Síntese e caracterização de nanopartículas semicondutoras de ZnO@Carbono com estrutura tipo núcleo-casca
(Universidade Federal de São Carlos, 2021-08-05)
In these study, nanoparticles with a core-shell structure of oxide zinc-carbon (ZnO@Carbon) were synthesized using the simple thermal decomposition method of Zn(CH3CO2)2•2H2O in a conventional electric furnace and a hybrid ...
Estudo do desempenho de eliminadores de névoa na fermentação alcoólica extrativa
(Universidade Federal de São Carlos, 2021-08-27)
The ethanol removal by gas stripping with CO2 offers a potential way to minimize the inhibitory effects of ethanol on yeast cells during the alcoholic fermentation, allowing higher ethanol volumetric productivity compared ...
Método bagging para aprimoramento de previsões de séries temporais
(Universidade Federal de São Carlos, 2021-10-22)
Different methodologies are proposed and explored aiming to reduce time series forecasting
error. A promising approach consists in combining different forecasts from different models
in order to get a better accuracy, ...