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Avaliação de pastos de capim elefante em sistemas forrageiros de produção convencional e orgânica sob pastejo
(Universidade Federal de Santa Maria, 2019-02-18)
Elephant grass has great importance in regions of tropical and subtropical climate, especially in dairy farms. Normally, this forage is established in monoculture under conventional production, using high levels of nitrogen ...
Avaliação de minerais e elementos traço na leishmaniose cutânea e sua correlação com a patogênese da doença
(Universidade Federal de Santa Maria, 2019-03-07)
Leishmaniasis is a disease caused by parasites of the genus Leishmania and can manifest several clinical forms like localized, disseminated skin lesions or visceral form. The clinical result of a Leishmania spp. infection ...
Estimativa dos parâmetros de funções de pedotransferência para os solos do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2019-04-29)
The soil water retention curve is an important information for the rational management of irrigation. Due to the difficulty in generating it through traditional methods, there is a need to create alternative methods, such ...
A adoção do padrão internacional contábil e sua influência na estrutura de capital das empresas brasileiras: um quase-experimento
(Universidade Federal de Santa Maria, 2019-03-29)
The capital structure of a company consists on the proportion of equity and thirty-part capital, which signs information related to its financing structure, making the company susceptible to the agents’ evolution which ...
Engenharia de cristais: estudo conformacional, topológico e energético de t-butilpirazóis e bis-t-butilpirazóis
(Universidade Federal de Santa Maria, 2019-02-22)
This work presents a proposed crystallization mechanism and conformational study of regioisomers of 5(3)-aryl-3(5)-carboxyethyl-1-(1,1-dimethylethyl)-1H-pyrazole (aryl, 4-X-C6H4, where X = H, F, Cl and Br) and a series of ...
Síntese, análise estrutural, luminescência e atividade biológica de complexos de metais de transição com ligantes derivados de benzoilidrazina e feniltiossemicarbazida
(Universidade Federal de Santa Maria, 2019-01-30)
This work reports the synthesis and characterization of new complexes with 2,6-diacetylpyridine-bis(benzoylidrazone) (L1) and 2,6-diformylpyridine-bis(4-phenylthiosemicarbazone) (L2) ligands. The complexes [(L1)2Ce]Cl3.14H2O ...
Interação entre líquidos iônicos imidazolíneos e os alginatos de sódio e hidroxâmico
(Universidade Federal de Santa Maria, 2019-01-30)
This work describes the interactions between sodium alginate (ALG) and hydroxamic
alginate (AHX) with the monocationic imidazolium ionic liquids series (CnMIMBr).
From the surface tension, electrical conductivity, ...
Efeitos de campos magnéticos aleatórios em sistemas de vidro de spin com clusters
(Universidade Federal de Santa Maria, 2019-03-08)
This work investigates the effects of the presence of random magnetic fields (RFs) in
thermodynamic quantities that characterize the spin glass state (VS). We adopt a cluster
spin model that considers long-range disordered ...
Identificação dos mecanismos entomotoxicos de dois compostos inseticidas naturais em modelo experimental alternativo de insetos: extrato contendo anatoxina-a(s) e jaburetox
(Universidade Federal de Santa Maria, 2019-03-29)
The risk assessment is a stage that aims at the evaluation and characterization of the toxic properties of xenobiotic compounds, conditions of exposure to humans and the environment. The aim of this work was to contribute ...
Parâmetros bioquímicos em guppy (Poecilia vivipara) e jundiá (Rhamdia quelen) expostos ao zinco
(Universidade Federal de Santa Maria, 2019-02-27)
Anthropogenic activities such as agriculture, urbanization and mining may increase the contamination of the aquatic environment by metals. Zinc (Zn) is an essential mineral that is involved in many biological processes. ...