Buscar
Exibindo os resultados de 1 a 10 de 522
Irradiance stress responses of gas exchange and antioxidant enzyme contents in pariparoba [Pothomorphe umbellata (L.) Miq.] plants
(Photosynthetica, 2008-12-01) [Artigo]
We evaluated the growth and development of the medicinal species Pothomorphe umbellata ( L.) Miq. under different shade levels ( full sun and 30, 50, and 70 % shade, marked as I(100), I(70), I(50), and I(30), respectively) ...
Comparison of polyamine, phenol and flavonoid contents in plants grown under conventional and organic methods
(International Journal of Food Science and Technology, 2008-10-01) [Artigo]
The objective of this work was to compare the contents of polyamines (putrescine, spermidine and spermine), and total soluble phenols and flavonoids in parts of plants grown under either organic or conventional cropping, ...
GFAAS Determination of Zinc in Fish Feed and Feces Using Slurry Sampling
(Food Analytical Methods, 2009-06-01) [Artigo]
This paper presents a simple, fast, and sensitive method to determine zinc in samples of feces and fish feed by electrothermal atomic absorption spectrometry through the direct introduction of slurries of the samples into ...
Photoelectrocatalytic treatment of p-nitrophenol using Ti/TiO2 thin-film electrode
(Journal of Photochemistry and Photobiology A: Chemistry, 2005-08-01) [Artigo]
The photoelectrochemical degradation of p-nitrophenol (PNP) was investigated using titanium dioxide thin-film photoelectrode. The effects of different supporting electrolytes, pH, applied potential and PNP concentration ...
Study of Densification Process and Microstructure for Highly Dense Doped MgB2 Bulk Samples
(Journal of Superconductivity and Novel Magnetism, 2012-10-01) [Artigo]
In order to give a contribution in the subject of MgB2 processing technique to obtain low cost high density bulk samples with improved superconducting properties, studies on dilatometry and on the microstructures of in ...
Electroanalytical determination of carbendazim and fenamiphos in natural waters using a diamond electrode
(Diamond and Related Materials, 2012-07-01) [Artigo]
In this study, a method for electroanalytical determination of carbendazim (CBZ) and fenamiphos (FNP) in natural and spiked water was developed using square wave voltammetly in Na2HPO4 0.1 mol L-1 as supporting electrolyte. ...
In situ evaluation of anticancer drug methotrexate-DNA interaction using a DNA-electrochemical biosensor and AFM characterization
(Physical Chemistry Chemical Physics, 2011-01-01) [Artigo]
An in situ evaluation of the dsDNA-methotrexate (MTX) interaction was performed by voltammetry using a DNA-electrochemical biosensor and characterized by atomic force microscopy (AFM) at a highly oriented pyrolytic graphite ...
N-acetylcysteine in high-sucrose diet-induced obesity: Energy expenditure and metabolic shifting for cardiac health
(Pharmacological Research, 2009-01-01) [Artigo]
To study the effects of N-acetylcysteine (NAC, C(5)H(9)-NO(3)S) on high-sucrose diet-induced obesity and its effects on energy metabolism and cardiac oxidative stress, male Wistar 24 rats were divided into four groups (n ...
Tethered DNA scaffolds on optical sensor platforms for detection of hipO gene from Campylobacter jejuni
(Sensors and Actuators B: Chemical, 2011-08-10) [Artigo]
DNA biosensors have gained increased attention over traditional diagnostic methods due to their fast and responsive operation and cost-effective design. The specificity of DNA biosensors relies on single-stranded oligonucleotide ...
Lipase and esterase: to what extent can this classification be applied accurately?
(Food Science and Technology (Campinas), 2011-09-01) [Artigo]
Tecnologia enzimática é um campo de conhecimento cada vez maior, e, nos últimos anos, esta tecnologia tem apresentado um interesse crescente, devido à busca de novos paradigmas em diversos processos produtivos. Lipases, ...