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Influência dos parâmetros reacionais na N-alquilação de 3,5-dimetil-1H-pirazol sob irradiação de micro-ondas
(Universidade Federal de Santa Maria, 2012-02-27)
This work describes the reaction parameters influence in the 3,5-dimethyl-1H-pyrazole N-alkylation under microwave irradiation. The experiments were performed in different conditions with the purpose of verified the influence ...
Desenvolvimento de um reator de pirólise aquecido por micro-ondas para produção de bio óleo e bio carvão a partir de biomassa lignocelulósica
(Universidade Federal de Santa Maria, 2023-03-07)
In this work a pyrolysis system heated by microwave radiation was developed with the objective of producing bio oil and bio char using biomass of pine wood residue as raw material. For this purpose, a microwave oven was ...
Conversão biotecnológica de casca de arroz em celulose bacteriana
(Universidade Federal de Santa Maria, 2019-01-25)
The state of Rio Grande do Sul is the major national rice producer and generates each
year large volumes of rice husk (RH) ̶ a left-over biomass with no controlled
destination, composed essentially by lignin, cellulose ...
Síntese e caracterização dos 3-(benzo[c][1,2,5]calcogenodiazol-5- il)-5-(ariletinil)1,2,4-oxadiazóis derivados de (z)-n’- hidroxibenzo[c][1,2,5]calcogenodiazóis-5-carboximidamida e dos ácidos 3-arilpropiólicos
(Universidade Federal de Santa Maria, 2023-05-31)
The importance of heterocycle chemistry has grown in recent years, enabling the
connection among many interdisciplinary areas of science, standing out in synthetic organic
chemistry, mainly in the pharmaceutical area, ...
Desenvolvimento de sistema FI-CVG-ICP-MS para determinação de mercúrio em peixe
(Universidade Federal de Santa Maria, 2023-06-26)
Mercury (Hg) is a toxic element that can accumulate in the environment and in the food chain due to its biomagnification and bioaccumulation. A high concentration of Hg in the human body can lead to health complications, ...
Síntese de nanoadsorventes e chars a partir da pirólise de bagaço de uva para fins de adsorção
(Universidade Federal de Santa Maria, 2022-10-01)
Graphene has received great attention due to its excellent properties. Commonly, its
synthesis is carried out from graphite. However, because graphite is a non-renewable
material, it is necessary to develop graphene ...
Avaliação de métodos de preparo de amostras para a determinação de elementos terras-raras em insetos comestíveis por USN-ICP-MS
(Universidade Federal de Santa Maria, 2023-08-11)
In this work, three sample preparation methods were evaluated for the subsequent
determination of rare earth elements (REE) in insects using inductively coupled plasma mass
spectrometry (ICP-MS). To avoid possible ...
Determinação de resíduos de agrotóxicos em feijão preto empregando método QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2023-06-09)
Brazil is the third largest producer of black beans (Phaseolus vulgaris L.) in the world,
with 60% of its population consuming this legume. During bean cultivation, pesticides
can be used at any stage of development and ...
Adsorção de metais pesados de efluente de fosfatização industrial usando argila bentonita e casca de soja
(Universidade Federal de Santa Maria, 2023-10-25)
In the present work heavy metals removal from real phosphate effluent, a stage of the industrial painting process, was investigated. As adsorbents, bentonite clay and soybean hulls without previous treatments were evaluated. ...
Síntese e avaliação biológica de novos híbridos moleculares derivados de 5’-arilcalcogenil-3-amino-timidina e 2,4,6-tricloro- 1,3,5-triazina
(Universidade Federal de Santa Maria, 2023-09-29)
The search for synthetic strategies that allow the efficient hybridization of biologically active molecules has gained attention among researchers, since they allow access to wide multiactive pharmacological varieties. In ...