Buscar
Itens para a visualização no momento 1291-1300 of 2657
Síntese e análise estrutural de clusters binários e ternários derivados de bis(fenilselenolato) de mercúrio Hg(SePh)2
(Universidade Federal de Santa Maria, 2012-03-30)
This work deals with the synthesis and structural analysis of binary and
ternary clusters derivatives from mercury bis(phenylselenolate) - Hg(SePh)2.
The reaction of Hg(SePh)2 with Mg(II), Fe(II), Co(II) and Ni(II) metal ...
Estudo de primeiros princípios de materiais nanoestruturados para baterias de lítio e para produção e armazenamento de hidrogênio
(Universidade Federal de Santa Maria, 2022-02-22)
In this work, Density Functional Theory (FTD) calculations were performed to
investigate nanostructured materials applicable in the production and storage of hydrogen
and in the composition of anodes for lithium batteries ...
A teoria da resolução de problemas aplicada em curso preparatório
(Universidade Federal de Santa Maria, 2021-12-14)
This dissertation aims to analyze the different methods used by students in solving problems that involve basic mathematical knowledge in Elementary School. Therefore, the Problem Solving methodology will be used for ...
A história (não) se repete
(Universidade Federal de Santa Maria, 2022-02-23)
This bibliographical and exploratory study of the history of mathematics, more specifically on the history of
infinitesimal calculus, relies both on the classical bibliography of the history of mathematics, notably in ...
Desenvolvimento de método colorimétrico utilizando dispositivo portátil para a determinação de cloreto em petróleo
(Universidade Federal de Santa Maria, 2020-09-24)
In this work, a colorimetric method was developed for the determination of chloride in crude oil using a portable device based on digital images obtained with an endoscopic camera and data processing using the PhotoMetrix ...
Investigação das propriedades fotofísicas e estudo da interação com biomoléculas de porfirinas meso-substituídas em posição meta contendo complexos de PdII, PtII e RuII
(Universidade Federal de Santa Maria, 2022-01-19)
This work aimed at the synthesis of porphyrins: meso-tetra(3-pyridyl)porphyrin (3-H2TPyP), meso-tetra [(3-
pyridyl)-chlor-(2,2'-bipyridyl)-palladium(II) ]porphyrin (3-Pd(bpy)TPyP), meso-tetra[(3-pyridyl)-chloro-(1,10-
...
Síntese, análise estrutural e avaliação do potencial inibitório frente à enzima tirosinase por complexos de oxidovánadio(IV) e dioxidovanádio(V) derivados de hidrazidas aromáticas.
(Universidade Federal de Santa Maria, 2021-10-07)
Ten ligands were synthesized through aldol condensation of salicylic aldehyde and pyridoxal hydrochloride (C1AS, C2AS, C3AS, C4AS, C5AS, C1P, C2P, C3P, C4P and C5P) with five primary amines from p-substituted aromatic ...
Síntese de 3-(organocalcogenil)-imidazotiazinas e funcionalização de inamidas via reações de ciclização, clorosselenação e tosilação promovidas por cloreto férrico e ácido p-toluilssulfônico
(Universidade Federal de Santa Maria, 2022-02-21)
In this thesis, four synthetic protocols were developed for the synthesis of four new classes of compounds, including the synthesis of 3-(organocalalcogenyl)-benzoimidazothiazines, 4-(organocalalcogenyl)-oxazolones, vinyl ...
Hidrotiolação regio e estereosseletiva de sistemas diínos: síntese e reatividade de (Z)-tioeninos
(Universidade Federal de Santa Maria, 2022-03-10)
Sulfur compounds are important building blocks in Organic Chemistry. The class of vinyl sulfides stands out for its versatility and applicability in the synthesis of new structures. Due to the relevance of these compounds, ...
Variabilidade interanual dos fluxos de CO2 em uma pastagem natural no bioma Pampa brasileiro
(Universidade Federal de Santa Maria, 2022-03-21)
The Pampa is a biome in South America, located in the southern region of Brazil, Uruguay and part of Argentina, its vegetation is mainly composed of grass interspersed with small gallery forests and riparian forests. The ...