Buscar
Itens para a visualização no momento 1181-1190 of 1406
Eventos de drenagem de ar na camada limite muito estável
(Universidade Federal de Santa Maria, 2022-12-23)
The very stable boundary layer occurs on nights with light wind and clear skies, which cause
strong radiative cooling on the surface, changing the structure and some characteristics of
the normal stable boundary layer. ...
Aplicação da transformação ortogonal no georreferenciamento com divisão de área
(Universidade Federal de Santa Maria, 2008-11-11)
The Geodesy methods and equipments progress brings with himself the growing need on geodetic surveys. Thereby, it is possible to make compatible any surveys with no extension boundary like from plane models and with no ...
Síntese de 1,2,4-triazol-5-ilamino pirimidinas trifluormetil substituídas
(Universidade Federal de Santa Maria, 2009-12-16)
This work describes the synthesis and characterization of fourteen 4-trifluoromethyl-2-[3-(pyridyl)-1H-1,2,4-triazol-5-ylamino]pyrimidines (6, 7), from the cyclocondensation
reaction of N-[3-(pyridyl)-1H-1,2,4-triazol-5 ...
Síntese e cristaloquímica de complexos de Hg(II) e Ni(II) com o ligante 3-(2-fluorofenil)-1-(4-acetilfenil)triazenido e atividade biológica de triazenos livres
(Universidade Federal de Santa Maria, 2006-07-26)
In this dissertation were synthesized six compounds, of the which four are free triazene ligands and two
are triazenido complex of Hg(II) and Ni(II). The compouns were characterized by melting point, infrared an
UV/VIS ...
Complementaridade quântica nos processadores quânticos da IBM
(Universidade Federal de Santa Maria, 2023-01-31)
Bohr’s principle of complementarity, after gaining contributions from several researchers, moved from a qualitative analysis to a quantitative analysis through what we
call today complementarity relations (CR). This change ...
Análise estrutural de polímeros bidimensionais de fosfinatos de metais alcalinos e alcalinos terrosos
(Universidade Federal de Santa Maria, 2006-03-03)
In this work, the structures of three alkali and alkali-earth metal complexes of
phenylphosphinate ligands and ethylphosphinate ligands, (4) catena-poli-
[Ba(O2PHPh)2(OH2)], (5) catena-poli-[Na(O2PHPh)] e (6) ...
Pré-tratamento das vitaminas B1, B2, B3, B6 , BB12 e C para a determinação de cádmio e chumbo por voltametria de redissolução anódica
(Universidade Federal de Santa Maria, 2005-07-25)
The present work approaches pretreatment steps for the determination of
cadmium and lead, as contaminants, in water soluble vitamins of samples, vitamins B1,
BB2, B3, B6, B12, and C, for anodic stripping voltammetry ...
Determinação multirresíduo de agrotóxicos em casca, polpa e tubérculo de batata empregando método QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2023-02-16)
Pesticides have been intensively used to control pests, weeds and diseases
associated with various crops. Although these compounds protect crops, when the
recommended doses for application are not respected, they can ...
Antimicrobiais sulfametoxazol e trimetoprima em efluente hospitalar: determinação, degradação através de eletrocoagulação e identificação de subprodutos e metabólitos
(Universidade Federal de Santa Maria, 2009-03-03)
In this study, it was developed a methodology using liquid chromatography coupled to tandem mass spectrometry for the determination of antimicrobials sulphamethoxazole and trimethoprim in hospital effluent and for monitoring ...
Fotometria CCD UBVRI de aglomerados de estrelas das Nuvens de Magalhães
(Universidade Federal de Santa Maria, 2006-05-19)
We present UBVRI CCD photometry in the Johnson-Cousins photometric system for a sample of twenty nine Magellanic Cloud star clusters (Lindsay 16, 26, 29, 48, 53, 61, 66, 67, 72, 76, 79, 82, 83, 85 of the Small Cloud ...