Buscar
Itens para a visualização no momento 1261-1270 of 1406
Síntese, caracterização e aplicação biológica de complexos derivados de bismuto(III) com ligantes do tipo aroiltioureias
(Universidade Federal de Santa Maria, 2020-03-06)
This work describes the synthesis, structural characterization and biological applications of four new bismuth(III) compounds with aroylthioureas as ligands: 1 - [Bi(La-O,S)3(HLa-S)], 2 - [Bi2(Lb-O,S)4(-Lb-12O,S,2 ...
Espectrometria de absorção atômica com tubo aquecido na chama e amostragem direta de sólidos para determinação de manganês e níquel em coque de petróleo
(Universidade Federal de Santa Maria, 2009-07-28)
A solid sampling flame furnace atomic absorption spectrometry (SS-FF-AAS)
system was developed in this work for Mn and Ni determination in petroleum coke.
The proposed solid sampling system was made in quartz, with two ...
Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics
(Universidade Federal de Santa Maria, 2023-03-15)
Microplastics (MP) have received great attention due to the mass-produced
residues discharged into the environment. MP are ideal for adhering to organic pollutants
that can be easily dispersed, thus posing risks to human ...
Síntese de derivados do estigmasterol e do ácido ursólico e avaliação de suas atividades biológicas
(Universidade Federal de Santa Maria, 2014-02-28)
The present work describes the synthesis of twenty-two new derivatives (4-25) from stigmasterol (1) and seven new derivatives (26-32) from ursolic acid (2) via esterification and coupling reactions with different amino ...
GPUHELP: um ambiente de apoio à execução de programas paralelos em arquiteturas de GPU
(Universidade Federal de Santa Maria, 2014-03-07)
Faced with complex problems that involve scientific applications, researchers are looking
for new ways to optimize the processing of these, using new concepts and paradigms for parallel
and distributed programming. An ...
Batimetria de pequenos reservatórios através de metodologia convencional e alternativa
(Universidade Federal de Santa Maria, 2013-02-19)
For legal use of artificial water reservatories, it is necessary liberation of competent authorities granting the request for water use. The application requires extensive information about the object to be measured. When ...
Algoritmo genético acoplado a um método multi-grid e a teoria dos grafos para determinação da estrutura de equilíbrio de aglomerados atômicos
(Universidade Federal de Santa Maria, 2012-12-14)
In this work we present a proposal to improve Genetic Algorithm method by coupling
it to the techniques of discretization of the configurational space via the multi-grid
methodology, and by employing a topological selection ...
Avaliação de ações preventivas de riscos utilizando teoria de decisão e redes de Petri coloridas
(Universidade Federal de Santa Maria, 2012-04-18)
Risk management in software projects involves the definition of actions to
prevent risks identified for the project in order to minimize their effects or eliminate
them.The definition of preventive actions, and especially ...
Congelamento inverso em um modelo de vidro de spin fermiônico
(Universidade Federal de Santa Maria, 2012-10-03)
The present work studies the counterintuitive phenomenon of inverse transitions (IT). The
IT are a class of phase transitions (reversible) in which the ordered phase appears at higher
temperatures than the disordered ...
Automação no processo de vetorização de áreas de interesse e buffer variável sobre imagens de satélite
(Universidade Federal de Santa Maria, 2012-08-02)
The constant improvement in computer application development techniques,
combined with the technological advancement of electronic devices that support such
systems, comes with the most contributing significantly different ...