Buscar
Itens para a visualização no momento 1021-1030 of 1406
Síntese e determinação estrutural de compostos Halo-organiltelúrio-mercúrio(II)
(Universidade Federal de Santa Maria, 2002-12-16)
Não foi possível inserir o abstract.
Síntese e reações de 5-trifluormetil- 4,5-diidro-1H-1-pirazoltiocarboxamida 3(4)-substituídos
(Universidade Federal de Santa Maria, 2002-07-26)
This thesis describes the synthesis and application as bi-heterocyclic precursor a
series of 3-aryl[alkyl]-5-hydroxy-5-trifluoromethyl-4,5-dihydro-1H-1-
pyrazolethiocarboxamides (2), which are easily obtained from the ...
Desenvolvimento e validação de procedimento analítico para a determinação de compostos organohalogenados em fertilizante orgânico empregando GC-ECD
(Universidade Federal de Santa Maria, 2004-02-17)
The growing worldwide concern regarding the life quality, especially
regarding the preservation and appropriate use of natural resources and quality of
food, has reflected on the productive systems. Inside this new ...
Método multirresíduo para determinação de agrotóxicos em mamão empregando QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2022-10-21)
Papaya is the fourth most consumed fruit in Brazil and the third most exported fruit by
the country. In search of better results in production and greater resistance to diseases
and pests, pesticides have their widespread ...
Dimerização quimioseletiva de vinilarenos catalisada por tribrometo de índio
(Universidade Federal de Santa Maria, 2004-02-27)
This work describes our first results on the use of indium(III) salts as catalysts of oligo-polimerization processes of olefins. The first class of olefins which were tested was vinylarenes under the catalytic influence ...
Síntese e análise estrutural de compostos supramoleculares de Cd(II) com o ligante 4,6-dimetilpirimidina-2-tiona
(Universidade Federal de Santa Maria, 2004-03)
This dissertation describes the synthesis and analysis of the supramolecular
compounds α- and β-[Cd(DMPYMT-S)2]n, DMPYMT-S = 4,6-dimethylpyrimidine-2-
thione.
The reaction product of cadmium acetate dihydrate with ...
Síntese de derivados de aminoácidos contendo selênio ou telúrio miméticos da enzima glutationa peroxidase
(Universidade Federal de Santa Maria, 2007-02-26)
This work presents the synthesis of aminoacid derivatives containing
selenium or tellurium. The synthetic strategy employed herein afforded the target
compounds in a two-step route. Besides, it awarded a modular ...
A efetivação da legislação ambiental: estudo a partir do espaço rural de Santa Maria/RS
(Universidade Federal de Santa Maria, 2009-04-22)
The reality in the rural area has been showing that a good share of the
agricultural practices developed does not assure the accomplishment of the
environmental legislation and neither the sustainability of the rural ...
Estudo da interação entre silício e alumínio extraídos do vidro na presença de soluções para nutrição parenteral
(Universidade Federal de Santa Maria, 2003-08)
Silicon is a non-metal essential to the living organisms due to its role
in the tissues and bones. The most important biological forms of silicon are
the amorphous silica and the monomeric silicic acid. Only the ...
Síntese de 3-carboxietil-6-trialometil-[1,3]-oxazin-2-onas
(Universidade Federal de Santa Maria, 2003-03)
This work presents a three steps synthetic route to obtain 1,3-
oxazin-2-ones, from the β-alkoxyvinyl trihalomethyl ketones of general
formula X3CC(O)CH=C(R)OR¹, where R = H, CH3, Ph, p-Me-Ph; R¹ =
Me, Et.
β-alkoxyvinyl ...