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Now showing items 31-40 of 86
Modificação de matrizes em análise espectroscópica por Raman e infravermelho médio
(Universidade Federal de São Carlos, 2021-12-16)
The spectroscopy methods of analysis, as Mid Infrared (MIR) and Raman spectroscopy, are based on the interaction of light and matter. These techniques present advantages, such as, non-destructive analysis, low cost and ...
Síntese de 5-seleno-1,2,3-triazóis policíclicos via reação dominó: cicloadição/selenilação mediada por sais de cobre
(Universidade Federal de São Carlos, 2022-08-19)
In recent years, the number of works involving the synthesis of selenium-containing molecules has increased considerably, especially due to its pharmacological activities and potential application in materials science. ...
Investigação do efeito alelopático dos extratos da aroeira-preta Myracrodruon urundeuva Freire Allemão no desenvolvimento das sementes das braquiárias Urochloa decumbens Stapf e Urochloa brizantha (Hochst. ex A. Rich) Stapf
(Universidade Federal de São Carlos, 2021-12-20)
Brachiaria grasses have great importance in the livestock sector, however, these grasses are considered weeds that affect negatively the productivity of many crops. Field observations indicate that Myracrodruon urundeuva ...
Propriedades citotóxicas de complexos de Cu(I)-Trifenilfosfina com ligantes aciltioureias ou naftoquinonas
(Universidade Federal de São Carlos, 2021-07-26)
In this work, the synthesis, characterization, and evaluation of the cytotoxic activity of sixteen Cu(I)/Triphenylphosphine complexes containing the acylthiourea or naphthoquinones ligands are presented. The complexes were ...
Síntese hidrotérmica aquecida por micro-ondas e caracterização por raios X baseada em síncrotron operando de nanopartículas de LiMn2O4 enriquecidas com Li e dopadas com Al, Co ou Ni para aplicação em baterias de íons lítio
(Universidade Federal de São Carlos, 2022-05-24)
A facile, fast and efficient microwave-assisted hydrothermal (MWH) route was used to synthetize undoped and doped spinels with Al or Co or Ni. The reaction was carried at low temperature of 140 °C for 5 min in an MWH reactor ...
Avaliação da influência da carbodiimida na reciclagem de tecidos a base de PA6
(Universidade Federal de São Carlos, 2023-11-30)
The remaining fabric from the textile industry, especially that related to clothing, is a growing environmental and economic problem. On a global scale, in 2015, 92 million tons of fabric were discarded and it is expected ...
Avaliação por RMN de alta resolução da presença de cereais não maltados na produção de cervejas
(Universidade Federal de São Carlos, 2020-07-16)
Statistics show that beer is the most widely consumed alcoholic beverage in the world and it is made up of water, barley malt, hops and yeast as main ingredients. The use of non-malted cereals in beer production is common ...
Desenvolvimento de fibras compósitas ultrafinas de policaprolactona, pectina e zeólita faujasita para acondicionamento de cloxacilina
(Universidade Federal de São Carlos, 2020-03-27)
Bovine mastitis and hoof diseases are infections responsible for great economic losses in the Brazilian agricultural sector. Such losses are associated with a reduction in milk and meat production leading to extreme cases ...
Synthesis of N-heterocycles and building blocks using multicomponent, photochemical and electrochemical approaches
(Universidade Federal de São Carlos, 2020-02-17)
Multicomponent reactions and protocols mediated by light and electrochemistry are powerful tools for modern organic synthesis. Moreover, they obey several principles of green chemistry such as atom economy, catalysis, waste ...
Estudo do método de obtenção de membranas assimétricas de polietersulfona contendo complexos de polieletrólitos
(Universidade Federal de São Carlos, 2020-04-03)
Compared with traditional separation methods, polymeric membranes have low operation cost, fast separation rate and versatility. One interesting way of changing membrane properties is mixing additives into the polymeric ...