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Ecotoxicologia de nanopartículas de ZnO é devida às partículas per se ou à sua ...

Analysis of the activation mechanism of Pseudomonas stutzeri cytochrome c perox...

J Biol Inorg Chem (2011) 16:881–888 DOI 10.1007/s00775-011-0785-8

Traceability statement for the determination of total chromium fraction in serp...

The purpose of this work is to contribute for the metrological traceability statement of chemical measurements. Traceability statement for total chromium mass fraction in serpentine soils was developed. Accordingly, the quantity values requiring a high degree of control are calibration and quality control standard solutions, matrix certified reference material and the calibration curve model fit.

Contamination by heavy metals in aquatic trophic webs: the case of otter and re...

Benefits of membrane electrodes in the electrochemistry of metalloproteins: med...

J Biol Inorg Chem. 2008 Jun;13(5):779-87. doi: 10.1007/s00775-008-0365-8 ; A comparative study of direct and mediated electrochemistry of metalloproteins in bulk and membrane-entrapped solutions is presented. This work reports the first electrochemical study of the electron transfer between a bacterial cytochrome c peroxidase and horse heart cytochrome c. The mediated catalysis of the peroxidase was analysed b...

Treatment of Bothrops alternatus envenomation by Curcuma longa and Calendula of...

It was investigated the efficiency of two extracts of plants and one fraction of their properties against the local effects of bothropic envenomation. Bothrops alternatus venom (1.25µg) diluted in 100µl of sterile saline solution was inoculated (intradermally) into the shaved dorsal back skin of 30 New Zealand rabbits. The animals were divided in six groups receiving the following treatments: group I: subcutane...

Neuroferritinopathy : missense mutation in FTL causing early-onset bilateral pa...

The authors identified a missense mutation in the FTL gene (474G>A; A96T) in a 19-year-old man with parkinsonism, ataxia, corticospinal signs, mild nonprogressive cognitive deficit, and episodic psychosis. This mutation was also present in his asymptomatic mother and younger brother, who had abnormally low levels of ferritin in the serum. The patient and his mother displayed bilateral involvement of the pallidum.

Avaliação das lesões locais de cães envenenados experimentalmente com Bothrops ...

The aim of this study was to evaluate the therapeutic action of flunixin meglumine and aqueous extract of Curcuma longa (10%) on local lesions caused by bothropic venom, comparing with the specific antivenom. Twelve adult dogs were inoculated in the middle third of the lateral face of the thigh with 0.3mg/kg of venom. The dogs were divided into three groups of four animals and the treatment was done two hours a...

Electrochemical studies on small electron transfer proteins using membrane elec...

Journal of Electroanalytical Chemistry 541 (2003) 153-162 ; Membrane electrodes (ME) were constructed using gold, glassy carbon and pyrolytic graphite supports and a dialysis membrane, and used to study the electrochemical behavior of small size electron transfer proteins: monohemic cytochrome c522 from Pseudomonas nautica and cytochrome c533 as well as rubredoxin from Desulfovibrio vulgaris . Different electr...

Supercritical extraction of oleaginous: parametric sensitivity analysis

The economy has become universal and competitive, thus the industries of vegetable oil extraction must advance in the sense of minimising production costs and, at the same time, generating products that obey more rigorous patterns of quality, including solutions that do not damage the environment. The conventional oilseed processing uses hexane as solvent. However, this solvent is toxic and highly flammable. Th...