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Now showing items 31-40 of 994
Avaliação da eficiência energética no processo de retificação de metal duro
(Universidade Federal de São Carlos, 2022-02-17)
The quest to make manufacturing processes sustainable is an increasingly important need. In this context, the present work assessed the grinding process of cemented tungsten carbide inserts with SNGN geometry (square, with ...
Desenvolvimento de métodos de pré-concentração para a determinação de elementos traço e especiação de cromo e arsênio em amostras agrícolas
(Universidade Federal de São Carlos, 2021-10-27)
Agricultural sustainable production is indispensable to meet the growing demand for food and nutritional control. The risk assessment associated with contamination by toxic elements in agricultural and aquaculture matrices ...
Desenvolvimento de compósito epóxi/fibra de vidro produzido por enrolamento filamentar para revestimento interno de coluna de produção de petróleo em aço carbono na exploração offshore
(Universidade Federal de São Carlos, 2021-08-04)
Epoxy/glass fiber composites (GRE) were produced by filament winding with a view to application as a liner in a carbon steel tube to replace all-metal super duplex stainless steel column in offshore petroleum exploration. ...
Construção automática de grafo de conhecimento no domínio do e-commerce
(Universidade Federal de São Carlos, 2022-04-27)
Extracting knowledge efficiently, when large volumes of data are generated daily, is still a challenge. In most cases, these data are unstructured, that is, they are presented in textual or visual format without a clear ...
Análise de um conversor fonte de tensão a quatro fios com corrente de neutro gerada por cargas desequilibradas
(Universidade Federal de São Carlos, 2022-02-24)
Several studies have examined the reduction of carbon dioxide emissions into the
atmosphere. The use of sustainable energy sources, such as solar and wind power, is focused by some of these studies. The Voltage Source ...
A influência dos capitais na trajetória dos empreendedores de startups de tecnologia no Brasil
(Universidade Federal de São Carlos, 2021-10-20)
Several studies highlight the positive contribution of entrepreneurship to economic and social development, given the relevance of the subject it is possible to observe the growth of studies about entrepreneurship, especially ...
Modelagem matemática aplicada ao estudo de células a combustível a etanol direto
(Universidade Federal de São Carlos, 2022-03-09)
The current fuel cell market is dominated by Hydrogen cells. Nevertheless, due to Hydrogen’s high reactivity, the difficulty in storage and the lack of infrastructure to distribute it, Hydrogen cells might not be the most ...
Obtenção e aplicação de fotoanodos baseados em TiO2 com adição de nitretos de carbono polimérico do tipo poli(heptazina imida)
(Universidade Federal de São Carlos, 2022-07-01)
In this work, poly(heptazine imide) carbon nitrides containing metals single atom in the ionic form were evaluated alone and in the combination with TiO2. Initially, a percentage of 2.5% of the nickel-containing material ...
Heat equation and the Yamabe flow on manifolds with fibered boundary metric
(Universidade Federal de São Carlos, 2021-09-02)
This work is dedicated to the study of the Yamabe flow on a class of non-compact complete Riemannian manifolds with fibered boundary and infinite volume, called Phi-manifolds. Some examples of this type of manifold include ...
REMEDY: architectural conformance checking for adaptive systems
(Universidade Federal de São Carlos, 2021-11-12)
Adaptive Systems (ASs) evaluate their own behavior and change it when the evaluation indicates it is not accomplishing the established goals, or when better functionality or performance is possible. Nowadays these kind of ...