Buscar
Itens para a visualização no momento 21-30 of 96
Síntese de α-metileno-β-lactamas via ciclização intramolecular de n-propiolamidas catalisada por t-BuOK e sua funcionalização via arilação de Heck catalisada por paládio
(Universidade Federal de Santa Maria, 2021-04-30)
The present work describes the regio- and stereoselective synthesis of α-methylene-β-lactams through intramolecular cyclization of different N-propiolamides catalyzed by potassium tert-butoxide. The same, in catalytic ...
Estudo da natureza de interações químicas do tipo calcogênio e halogênio mediante o estudo da estrutura eletrônica e da teoria quântica de átomos em moléculas
(Universidade Federal de Santa Maria, 2021-08-27)
In this work we present the results of a systematic analysis of the electronic structure of different chemical systems, through the Density Functional Theory (DFT), for the study of the nature of chemical bonds involving ...
Proposta de uma arquitetura para detecção de situações de interesse e ações proativas em processos de negócio
(Universidade Federal de Santa Maria, 2021-03-03)
With the advancement of technology and the constant search of organizations to
improve their organizational processes, aiming to maximize the use of resources,
several organizations are investing in improvements in the ...
Modelos matemáticos para evolução de resistência de insetos-praga a transgênicos
(Universidade Federal de Santa Maria, 2021-04-30)
Genetically Modified Organisms (GMOs) are organisms that have undergone artificial
changes in their genetic material. We can cite as an example of GMOs, genetically modified
crops or, simply, transgenic crops. The main ...
Cografos integrais
(Universidade Federal de Santa Maria, 2021-09-16)
The search for integral cographs is a topic of interest in Spectral Graph Theory. From this,
and motivated by the structural characteristics of these graphs, and by their spectral properties,
we propose, in this dissertation, ...
Solução analítica do modelo 2-estrelas com graus correlacionados
(Universidade Federal de Santa Maria, 2021-10-27)
In this work, we study an important tool to model complex networks built from empirical data,
wich are exponential random graphs. We propose a model to generate random graphs,
whose hamiltonian enables to impose generic ...
Variações em curta e longa escalas de tempo do perfil em duplo-pico de Ha da Galáxia Pictor A
(Universidade Federal de Santa Maria, 2021-10-27)
In the current paradigm nuclear activity in a galaxy happens when the central Supermassive
Black Hole (SMBH) is being fed by an accretion disk of gas. The spectral signature of the
accretion disk is the presence of broad ...
Equações polinomiais de até quarto grau: o limite das soluções gerais por radicais
(Universidade Federal de Santa Maria, 2021-10-15)
Trying to enrich the Maths teaching, discussion about techniques and equation solutions
of up to fourth degree became the subject of this work, focusing on these sentences resolutions
through radicals. In order to analize ...
[2]- e [3]rotaxanos como modelos para avaliar a influência das interações intercomponentes e intermoleculares no estado sólido cristalino
(Universidade Federal de Santa Maria, 2021-07-30)
Rotaxanes are widely studied for their ability to move one component relative to another. Intercomponent interactions are widely studied in solution and have been gaining more field in the crystalline solid state. ...
Development of methods for Mg, Sr and Pb isotopic analysis of crude oil by MC-ICP-MS
(Universidade Federal de Santa Maria, 2021-09-17)
Neste trabalho, foi feita a determinação das razões isotópicas de Mg, Sr e Pb em petróleo por espectrometria de massa com plasma indutivamente acoplado e multi-coletor (MC-ICP-MS). Dois métodos de preparo de amostra foram ...