PREPARATION OF IRON/CARBON MATERIAL FROM BIODIESEL WASTE FOR APPLICATION IN THE REMOVAL OF ORGANIC CONTAMINANTS. In this work, iron/carbon-based catalysts obtained from biodiesel residues, glycerin, were prepared. The composites were prepared by thermal carbonization of the glycerin polymer, from biodiesel residues, in the presence of iron salt. The materials obtained were characterized by adsorption/desorption of N2, scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy and thermogravimetric analysis. XRD analysis have shown the presence of hematite and magnetite. The methylene blue (MB) adsorption and oxidation tests reached 99% color removal in the presence of hydrogen peroxide. The steadystate spectra confirmed the MB oxidation by the reduction of the fluorescence intensity. Besides, it has high stability, with no active phase leaching, proving a heterogeneous oxidation process.

ABSTRACT PURPOSE: To evaluate the effects of dobutamine (DB), noradrenaline (NA), and their combination (NADB), on volume retention in rabbits submitted to hemorrhage. METHODS: Thirty six rabbits were randomly divided into 6 groups: SHAM, Control, Saline, DB, NA, DB+NA. All the animals, except for SHAM, were subjected to hemorrhage of 25% of the calculated blood volume. Control animals were replaced with their own blood. The other groups received NSS 3 times the volume withdrawn. The intravascular retention, hematocrit, diuresis, central venous pressure, mean arterial pressure, NGAL, dry-to-wet lung weight ratio (DTWR) and the lung and kidney histology were analyzed. RESULTS: Replacement with NSS and NA, DB or NA+DB did not produce differences in the intravascular retention. After hemorrhage, the animals presented a significant decrease in the MAP and CVP, which were maintained until volume replacement. Regarding NGAL, dry-to-wet-lung-weight ratio, lung and kidney histology, there were no statistical differences between the groups. CONCLUSION: The use of noradrenaline, dobutamine or their combination did not increase the intravascular retention of volume after normal saline infusion.

PURPOSE: To compare the incidence of endothelial injury after single-dose or continuous propofol infusion in conventional lipid-based emulsion (LE) versus microemulsion (ME). METHODS: Forty-two rabbits (2.5-4.5 Kg) were randomly allocated into seven groups of six animals each: SHAM- surgical treatment alone; Bolus Control Group - 3 mL-intravenous (IV) bolus of saline; Continuous Infusion Control Group - 3 mL- IV bolus of saline followed by a continuous infusion of 0.2 ml/kg/min for 60 min; Bolus LE Propofol Group - IV bolus of LE propofol (3 mg/kg); Bolus ME Propofol Group - IV ME propofol bolus (3 mg/kg); Continuous LE Propofol Group - IV LE propofol bolus (3 mg/kg) followed by a continuous infusion of 0.2 ml/kg/min for 60 min; Continuous ME Propofol Group - IV ME propofol bolus (3 mg/kg) followed by a continuous infusion of 0.2 ml/kg/min for 60 min. RESULTS: There were no statistically significant differences between the studied groups in blood pressure, in central venous pressure and in the biochemical profile. No significant differences were found in inflammatory mediators and in tissue analysis between the two emulsions. CONCLUSION: Microemulsion and lipid-based emulsion propofol had similar inflammatory, biochemical and microscopy profiles. Thus, microemulsion propofol can be used as an alternative to lipid-based emulsion propofol.

O objetivo do estudo foi investigar a influência da natação sobre as alterações morfológicas do músculo esquelético em processo de reparo após criolesão. Foram usados 45 ratos divididos em cinco grupos: controle (n=5); sham (n=5), adaptação (n=5), criolesionados e tratados com natação sacrificados após 7, 14 e 21 dias (n=15); criolesionados e sem tratamento aquático sacrificados após 7, 14 e 21 dias (n=15). As sessões de natação foram realizadas 6 vezes por semana com 90 min de duração cada. Ao término do protocolo os animais foram sacrificados e a análise morfológica da área da lesão foi realizada. A análise morfológica semiquantitativa demonstrou que os músculos do grupo controle apresentaram aspecto histológico normal. O grupo sham apresentou edema, mionecrose e infiltrado inflamatório em grau 1. Nos grupos 7, 14 e 21 dias, não existiram diferenças estatisticamente significativas nas 4 etapas de remodelamento tecidual avaliadas (infiltrado inflamatório, edema, necrose e fibras musculares imaturas) entre os grupos lesionados quando comparados aos grupos com lesão e tratamento aquático. Em conclusão, foi possível verificar que a natação não causou alterações morfológicas durante o reparo do músculo esquelético após criolesão.

The aim of study was investigate the influence of swimming on the morphological changes in skeletal muscle repair process following cryoinjury. There were used 45 rats divided into 5 groups: control (n=5), sham (n=5), adaptation (n=5), cryolesioned treated with swimming and sacrificed after 7, 14 and 21 days (n=15), untreated and cryolesioned sacrificed after 7, 14, and 21 days (n=15). Animals swan for 90 min/ each session and 6 times a week. At the end of the protocol, the animals were sacrificed and morphological analysis of the lesion area was performed. The semi-quantitative morphological analysis showed that the muscles in the control group exhibited normal histological aspects while the sham group exhibited edema, myonecrosis and inflammatory infiltrate grade 1. In groups 7, 14, and 21 days, the results indicated that there were no statistically significant differences in four stages of tissue remodeling evaluated (inflammatory infiltration, edema, necrosis, and immature muscle fibers) between the injured groups compared to groups with lesion and treated with swimming. In conclusion, it was verified that swimming did not alter morphological aspects of skeletal muscle during the repair process following cryoinjury.

OBJETIVO: avaliar e comparar a postura de cabeça e pescoço e a relação com a classe oclusal, entre crianças respiradoras orais e respiradoras nasais. MÉTODOS: realizou-se um estudo observacional, de corte transversal em que participaram 110 crianças divididas em Grupo I: respiradoras nasais e Grupo II: respiradoras orais. Para avaliação da respiração utilizou-se o teste do vapor no espelho e água na boca, e exame clínico intra-oral para classificação oclusal de Angle. A análise da postura foi realizada por meio de fotogrametria e o software Alcimage® para mensuração do ângulo pré-definido pelos pontos Processo Espinhoso da sétima vértebra cervical, Manúbrio do Esterno e Ápice do Mento. Os dados obtidos foram tabulados e submetidos à análise estatística, utilizando o programa SPSS 12.0, num intervalo de confiança de 95%. RESULTADOS: foi possível observar valores significativamente maiores do ângulo cervical para o Grupo II (96,59º±8,79) quando comparado ao Grupo I (86,60º±8,53) (p<0,001). As crianças respiradoras orais apresentaram oclusão classe II de Angle (p<0,05). Os participantes classe II apresentaram maior ângulo cervical, diferindo estatisticamente dos pacientes classe I (p<0,05). CONCLUSÃO: existe relação entre respiração oral, alteração na postura da cabeça e pescoço e oclusão classe II de Angle nas crianças estudadas, sendo a anteriorização da cabeça a alteração mais evidente em crianças respiradoras orais.

PURPOSE: to evaluate and compare head and neck posture, and the relationship between occlusal class, among mouth and nasal breathing children. METHODS: an observational, cross-sectional study was carried out, in which 110 children took part. These were divided into Group I: nasal breathers, and Group II: mouth breathers. For evaluating the respiration, we used mirror clouding and filling the mouth with water tests, with intrabuccal clinical exam for the Angle occlusal classification. Posture analysis was carried out by means of photogrammetry, and the software Alcimagem® was used to measure the predefined angle by the protuberances of the Spinous Process of the 7th Cervical Vertebra, Manubrium of the sternum and Mentum Vertex. The obtained data were tabulated and submitted to a statistical analysis, using the program SPSS 12.0 with a 95% confidence interval. RESULTS: a larger cervical angle was observed for Group II (96.59º±8.79) than for Group I (86.60º±8.53), showing statistically significant differences (p<0.001). The majority (68.5%) of the mouth breathing individuals presented class II occlusion Angle, and this relationship was significant (p<0.05). The class II individuals showed a larger cervical angle, differing statistically from the class I patients (p<0.05). CONCLUSION: it may be concluded that there is a connection between mouth breathing, alteration in head and neck posture and class II occlusal Angle in the studied children. In mouth breathing subjects, forward inclination of the head is predominant.