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Now showing items 41-50 of 625
Estudos de poligalacturonases do fungo mutualista Leucoagaricus gongylophorus
(Universidade Federal de São Carlos, 2014-08-12)
Polygalacturonases (PGases) are enzymes which hydrolyze glycosidic linkages - 1,4 between pectic acid residues, and are produced by plants, fungi, bacteria and yeasts. The fungus L. gongylophorus, Atta sexdens ant ...
Nano-microencapsulados de extrato de Azadirachta indica usando ligninas do bagaço de cana-de-açúcar: estabilidade e eficácia contra insetos pragas
(Universidade Federal de São Carlos, 2014-07-25)
The present work aimed the development of a model bioinsecticide for pest insect control using microencapsulated botanical extracts of Azadirachta indica (neem), and natural polymer of lignins, witch were extracted from ...
Complexos de vanádio contendo bases de Schiff como catalisadores na oxidação do cicloexano
(Universidade Federal de São Carlos, 2014-03-27)
The vanadium complexes of the type [VO(acac)2], [VO(acac)(apftsc)], [VO(acac)(apmtsc)], [VO(acac)(aptsc)], [VO(acac)(apf)], vanadium (IV) and [VO2(apftsc)], [VO2(apmtsc)], [VO2(aptsc)] e [VO2(apf)], vanadium (V), were used ...
Alcaloides e diidrochalconas de Metrodorea stipularis: química e bioatividade
(Universidade Federal de São Carlos, 2014-04-04)
This work was based on bioactivity-guided study of five plants ( Galipea jasminiflora , Esenbeckia febrifuga, Esenbeckia grandiflora , Metrodorea stipularis and Zanthoxylum Fagara ) from Rutaceae family using the enzyme ...
Reações de adição conjugada de indóis e oxindóis empregando organocatálise
(Universidade Federal de São Carlos, 2014-08-07)
Organocatalysis has emerged as a powerful synthetic tool which accelerated the development of new methods to obtain symmetric and asymmetric molecules. Furthermore, the use of small organic molecules such as amino acids ...
Desenvolvimento de filmes de carboximetilcelulose com nanopartículas de prata e avaliação de sua atividade antimicrobiana e toxicidade
(Universidade Federal de São Carlos, 2014-08-25)
One alternative for new packagings is the use of renewable materials as raw materialin the development of films, with the challenge of maintaining the quality of the product. Polysaccharides are abundant and renewable ...
Uso da modelagem molecular na solução de problemas em química
(Universidade Federal de São Carlos, 2014-08-29)
The studies presented herein show the use of molecular modelling coupled to spectroscopic data to tackle four different problems in organic chemistry. In the first study, the sulfonylation of the primary hydroxyl group of ...
Síntese e caracterização de espinélios de lítio e manganês obtidos via rota hidrotermal assistida por microondas
(Universidade Federal de São Carlos, 2014-11-28)
Lithium and manganese oxide in spinel phase (LiMn2O4) was obtained by microwave-assisted hydrothermal route starting from completely soluble reagents. For this, a mixture of potassium permanganate and lithium hydroxide ...
Estudos de complexos de rutênio (III) e complexos polímero-suportados em reações de hidrogenação e hidroformilação de substratos orgânicos
(Universidade Federal de São Carlos, 2014-05-16)
The synthesis and characterization of five ruthenium (III) complexes such as mer-[RuCl3(dppb)(N)], where N = pyridine and 4-substituted derivatives were performed in this work. These complexes were evaluated as catalysts ...
Síntese e aplicação do SrTiO3 na fotodecomposição da água para a geração de hidrogênio
(Universidade Federal de São Carlos, 2014-07-11)
Strontium titanate (SrTiO3) is an n-type semiconductor with high chemical and photochemical stability. This wide band gap oxide has a band gap energy of about 3.2 eV as well as a favorable energy for photocatalysis. In ...