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Itens para a visualização no momento 11-20 of 104
Reações entre ácidos β-cianocarboxílicos e nitrogênios nucleofílicos: uma eficiente estratégia para a síntese de succinimidas, pirrolidinonas e tetrazóis
(Universidade Federal de Santa Maria, 2011-02-25)
This work presents the synthesis of 41 succinimides, 24 pyrrolidinones and 8 tetrazoles, all presenting unprecedented chemical structure, except for the
succinimide 3-ethoxy-1-methylpyrrolidine-2,5-dione. These compounds ...
Métodos individual e multirresidual para determinação de pesticidas em grãos e derivados por GC-PFPD, GC-ITD-MS e LC-MS/MS
(Universidade Federal de Santa Maria, 2011-08-29)
Due to the complexity of grains like soybean, corn and rice, and the very low
pesticide concentration expected for these samples, it is really necessary to develop
efficient and reliable analytical methods to identify and ...
Determinação das constantes de estabilidade dos complexos formados entre os aminoácidos cisteína, N-acetilcisteína e lisina com chumbo em solução aquosa
(Universidade Federal de Santa Maria, 2011-01-18)
In this study we investigated the interaction between lead and the amino acid cysteine, lysine and N-acetylcysteine by testing long-term contact with ion exchanger resins and also the determination of stability constants. ...
Estudo do comportamento químico de heterociclos trifluormetil substituídos em reações com DAST
(Universidade Federal de Santa Maria, 2011-03-01)
This work describes the study of the chemical behavior of trifluoromethyl substituted heterocycles as 1H-pyrazoles, 2-pyrazolines, 2H-cromenones and isoxazolines in reactions with DAST, with the aim of evaluating possible ...
Efeitos da espessura de gordura, conformação, peso de carcaça e idade sobre a qualidade da carcaça e da carne de vacas de descarte
(Universidade Federal de Santa Maria, 2011-12-12)
The objective was to analyse the effect of subcutaneous fat thickness (SFT),
conformation (CONF), cold carcass weight (CCW) and age on carcass and meat quality of
152 Nellore cull cows and 240 Charolais cull cows. The ...
Alimentos convencionais e não-convencionais na engorda e qualidade de pescado do jundiá(Rhamdia quelen)
(Universidade Federal de Santa Maria, 2011-12-09)
Die to rapid growth of aquaculture and the consequent increase for aquaculture feed, the industry's main challenge is to identify potential dietary ingredients that ensure satisfactory performance, economic viability and ...
Alternativas forrageiras para sistemas de recria de novilhas de corte
(Universidade Federal de Santa Maria, 2011-03-16)
Two experiments were carried out aiming to evaluate pasture attributes and productive
and reproductive performance of beef heifers from nine to 13 months of age (Experiment 1)
and subsequently from 15 to 18 months of age ...
Meta-análise do tratamento de dejetos suínos em reatores anaeróbio de fluxo ascendente com manta de lodo e reator sequencial em batelada
(Universidade Federal de Santa Maria, 2011-08-26)
The study was performed in order to evaluate, through meta-analysis, the relationship of upflow anaerobic sludge blanket or sequencing batch reactors on the removal efficiency ofpollutant loadin swine waste treatment. The ...
Desemulsificação de petróleos assistida por ultrassom e posterior caracterização das fases água e óleo
(Universidade Federal de Santa Maria, 2011-08-19)
The effect of ultrasound (US) for demulsification of crude oils with different
characteristics (viscosity, density e water content) was investigated, without using
chemical demulsifier. Initially, the treatment using US ...
Mecanismos envolvidos nos efeitos do seleneto vinílico bis substituído (svbs) em modelos animais de depressão e de dor
(Universidade Federal de Santa Maria, 2011-03-18)
The association between depression and chronic pain is frequent and bidirectional. The high number of patients with depression and chronic pain who are refractory to currently available drugs makes it important search for ...