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Injeção intracitoplasmática de espermatozoide: métodos de ativação oocitária e desestabilização da membrana espermática
(Universidade Federal de Santa Maria, 2017-02-09)
Development of bovine embryos produced by intracytoplasmic sperm injection (ICSI) is low compared to fertilized embryos. Deficient oocyte activation, inappropriate sperm capacitation, and lack of sperm decondensation are ...
Interações dinâmicas no crescimento de tungue e cana-de-açúcar em sistemas agroflorestais
(Universidade Federal de Santa Maria, 2017-06-30)
The aim of the study was to evaluate the influence of meteorological variables on the growth of Tungue and its implications on the growth and productivity of sugarcane in agroforestry systems. The research was conducted ...
Caracterização morfológica e agressividade de populações de Pratylenchus spp. provenientes de cana-de-açúcar e manejo de fitonematoides na cultura pelo emprego de rizobactérias
(Universidade Federal de Santa Maria, 2017-03-31)
Sugarcane is among the crops most affected by the presence of phytonematoids, with large losses in productivity observed each year. In view of this problem, the objective of this work was to characterize the nematode ...
A inibição da enzima δ-aminolevulinato desidratase por monossacarídeos não é mediada pela oxidação de grupos -sh
(Universidade Federal de Santa Maria, 2004-08-18)
Heme pathway enzyme δ-aminolevulinate dehydratase (δ-ALA-D) is a good marker for oxidative stress and metal intoxication. This sulfhydrylic enzyme is inhibited in several oxidative pathologies like lead, mercury and aluminum ...
Quantificação da glutationa reduzida em eritrócitos humanos por cromatografia líquida de alta eficiência-uv: validação e aplicação
(Universidade Federal de Santa Maria, 2005-02-21)
Oxidative stress may be initiated by a decline in the antioxidant defence system or by an overproduction of free radicals leading to an imbalance between oxidants and antioxidants. The most significant alteration in the ...
Derivados pirazolínicos inéditos causam antinocicepção em camundongos no teste da formalina
(Universidade Federal de Santa Maria, 2004-07-29)
The discovery of pyrazole derivatives dates back to 1884, when the German chemist Ludwig Knorr attempted to synthesize quinoline derivatives with antipyretic activity and accidentally obtained antipyrine, a pyrazolinone, ...
Efeito teratogênico do ditelureto de difenila, administrado durante a gestação em ratas e efeito de organocalcogênios sobre a reprodução em ratos machos
(Universidade Federal de Santa Maria, 2004-07-30)
Organochalcogens are important intermediates and the main applied reagents in organic synthesis and in industrial processes, which can increase human exposure risk to these chemicals in the workplace. The effects of single ...
Ratas lactantes e não lactantes diferem quanto à sensibilidade ao HgCl2: efeito protetor do ZnCl2
(Universidade Federal de Santa Maria, 2012-08-17)
Mercury is a divalent metal found in the liquid state at room temperature without biological function. Occupational exposure to this metal occurs mainly in industrial activities and agriculture. Its toxicity seems to be ...
Manejo do solo e plantas de cobertura de inverno para o cultivo da soja em área de arroz irrigado
(Universidade Federal de Santa Maria, 2017-02-23)
In Rio Grande do Sul state, the Alfisols areas are predominantly cultivated with irrigated rice, however, the monoculture of rice can complicate the use of these areas for rice crop. An alternative to this is the use of ...
Toxidez por cobre: reflexos na qualidade de sementes e no desenvolvimento inicial de aveia preta
(Universidade Federal de Santa Maria, 2017-02-24)
in the soill elevated over the years through anthropogenic actions such as the application of
manure and cupping fungicides. As a reflection of these increases the establishment and
development of plants grown in these ...