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Síntese de 3 e 4-(organosselenil)-quinolinas via reações de ciclização intramolecular
(Universidade Federal de Santa Maria, 2024-03-27)
Quinolines are important heterocycles, where many molecules that have biological and pharmacological activities constitute this quinoline nucleus, driving more and more studies on the synthesis of these compounds. In the ...
Fonte ininterrupta de energia de dupla conversão com integração de energia fotovoltaica
(Universidade Federal de Santa Maria, 2024-03-02)
This work presents topologies and designs for the integration of photovoltaic systems with
a double-conversion uninterruptible power supply (UPS). Based on the literature review,
two topologies are derived and selected ...
Formação de portfólios com o uso de redes neurais artificiais e distribuição de probabilidade com caudas longas
(Universidade Federal de Santa Maria, 2024-03-04)
In this experimental study, artificial neural networks (ANNs) and long-tail Probability Ranking
are used to construct investment portfolios. The objective is to investigate whether portfolio
formation can be seen as a ...
Emissão de óxido nitroso e atributos físicos, químicos e biológicos de um argissolo com histórico de adubação com composto de pó de tabaco
(Universidade Federal de Santa Maria, 2024-01-19)
Tobacco powder compost produced by solid-state fermentation (SSF) of waste generated in the tobacco industry has been used in agricultural crops in southern Brazil. However, as this is a recent practice, there are few ...
Modelos agrícolas para aumentar a eficiência produtiva nos sistemas de produção de grãos em ambientes subtropicais
(Universidade Federal de Santa Maria, 2024-02-20)
Studies on yield gaps in individual crops to identify the possibility of increasing yield are frequent in the literature. However, annual yield can also be increased by altering the type, number, and temporal arrangement ...
Perfil redox, imunológico e histopatológico de jundiás infectados por Aeromonas hydrophila e tratados com extrato de folhas de Hesperozygis ringens (Benth.) Epling
(Universidade Federal de Santa Maria, 2024-01-30)
Aquaculture represents an essential practice for feeding the growing world population and has demonstrated record expansion levels. Combined with this growth, bacterial outbreaks have emerged and lead to large losses in ...
Análise técnica e de custo-benefício do sistema não convencional trifásico a dois fios para a distribuição de energia elétrica em média tensão no meio rural
(Universidade Federal de Santa Maria, 2024-03-14)
This Doctoral Thesis presents a technique to support the hypothesis that the Three-Phase Two-
Wire (TPTW) system is an excellent economic alternative for rural properties that do not have
their electricity needs met by ...
Sociabilidades e modos de vida em uma vila operária: o caso de Camaragibe (1900 – 1930)
(Universidade Federal de Santa Maria, 2023-10-09)
This doctoral thesis, entitled “Sociabilities and ways of life in a working-class village: the case
of Camaragibe (1900-1930),” aims to verify the inner workings of and daily life of workers at
the Fábrica de Tecidos de ...
Prospecção de microrganismos para o controle de insetos-praga nas culturas da soja e do algodão
(Universidade Federal de Santa Maria, 2024-02-01)
The occurrence of insect pests in crops of high economic value directly affects the yield of plants and grains. This scenario led to the mass investigation of chemical products that overcome these adversities and provide ...
Capacidades dinâmicas produtivas, comportamento estratégico e desempenho organizacional: um estudo nas microcervejarias artesanais
(Universidade Federal de Santa Maria, 2023-12-07)
In today's ever-changing global business environment, organizations need to pay attention to developing innovative forms of development. In this context, it appears that the Brazilian beer market is undergoing a major ...