Centro Universitario Do Leste Of Minas Gerais
Centro Universitario Do Leste Of Minas Gerais
Almeida G.D.,Federal University of Viçosa |
Godoi E.P.,Centro Universitario Do Leste Of Minas Gerais |
Santos E.C.,Federal University of Viçosa |
de Lima L.R.P.,Centro Universitario Do Leste Of Minas Gerais |
de Oliveira M.E.,Instituto Metropolitano Of Ensino Superior
Revista de Ciencias Farmaceuticas Basica e Aplicada | Year: 2013
The present study aimed to analyze the influence of (Allium sativum) aqueous extract activity in the minimum inhibitory concentration of antibiotics against S. aureus, in vitro, and its synergistic effect with vancomycin, gentamicin, and tetracycline. The synergy tests were performed by Kirby-Bauer method. The association of the extract with each antibiotic in isolation was effective in inhibiting the growth of S. aureus strain. The greatest evidence of synergism was observed in the combination of extract with vancomycin. The synergy tests results were submitted to Wilcoxon's t-test (p <0.01). Regarding the results obtained in this study, the association of antibiotic therapy with garlic extract can represent a promising therapeutic tool for the treatment of bacterial diseases with possibility of reduction in the toxicity degree and bacterial resistance to antibiotics.
Moura A.N.D.,Federal University of Espirito Santo |
Favarato L.N.O.,Aperam S.A |
Itman Filho A.,Federal University of Espirito Santo |
Alcantara C.M.,Aperam S.A |
And 3 more authors.
Materials Characterization | Year: 2017
The banded microstructure effects on the texture and recrystallization evolution in UNS S32304 Lean Duplex stainless steel was investigated by Electron Backscatter Diffraction (EBSD), hardness and microhardness measurements. The annealed hot rolled band was cold rolled and annealed in the laboratory with interruptions at temperatures ranging from 900 °C to 1050 °C and according to industrial process conditions. The experimental results indicated that the nucleation during recrystallization occurred at high angle grain boundaries and phase boundaries. The austenite recrystallized independently of the ferrite and showed typical deformation texture. The inexistence of transition from α-fiber to γ-fiber and the prevalence of the recovery process in ferrite during annealing could be adequately explained by the presence of austenite lamellae acting as barriers to the growth of γ-fiber recrystallized grains. © 2017 Elsevier Inc.
De Araujo Cardoso R.F.,Brazilian Center for Research in Physics (CBPF) |
Cunha M.A.D.,Centro Universitario Do Leste Of Minas Gerais |
Brandao L.P.M.,Military Institute of Engineering of Rio de Janeiro
Journal of Materials Research and Technology | Year: 2013
A major concern of society nowadays is the issue of sustainable development, which includes energy conservation. In order to induce a reduction of electrical energy consumption, governments across the world have pressured the appliance makers to increase in energy efficiency of electric engines. One of the ways to improve the performance of electric engines is to use steels with lower magnetic losses. The typical electrical steels are steels with about 3.5 wt.% Si. It is well known that an increase in Si content decreases magnetic losses. The purpose of this work was to evaluate the decrease of magnetic losses after increasing the Si and Al content in electrical steels by hot dipping, using an Al-Si alloy bath followed by a thermal treatment. A reduction of eddy current losses, for 60 Hz and 400 Hz, was observed in the steel after addition of Al and Si to about 4.5 wt.% Al and 4.8 wt.% Si. © 2013 Brazilian Metallurgical, Materials and Mining Association.
Godinho M.,Centro Universitario Do Leste Of Minas Gerais |
De F. Goncalves R.,Federal University of São Carlos |
Leite E.R.,Federal University of São Carlos |
Raubach C.W.,Federal University of Pelotas |
And 4 more authors.
Journal of Materials Science | Year: 2010
The gadolinium-doped ceria nanorods (Gd0.2Ce0.8O 2-x ) were synthesized by hydrothermal treatment. It was shown that the use of microwave heating during hydrothermal treatment decreases the treatment time required to obtain gadolinium-doped ceria nanorods and that oriented attachment is the dominant mechanism responsible for anisotropic growth. It was clear that Gd0.2Ce0.8O2-x nanorods were more catalytically active than commercial CeO2 in the ethanol reforming reaction. © 2009 Springer Science+Business Media, LLC.
Drumond G.V.F.,Centro Universitario Do Leste Of Minas Gerais |
de Almeida Caixeiro A.P.,Centro Universitario Do Leste Of Minas Gerais |
Marcon J.L.,Federal University of Amazonas |
Affonso E.G.,National Institute of Amazonian Research
Acta Amazonica | Year: 2010
The present study compared the biochemical and hematological parameters of fingerlings and juveniles Arapaima gigas (Osteoglociformes, Arapaimidae) from a semi-intensive fish farming in Manaus, Amazon State, Brazil. Fingerlings A. gigas had lower levels of total protein, triglycerides, urea and mean cell volume (MCV), but higher (p<0.05) glucose, cholesterol and hemoglobin concentration, red blood cell counts, hematocrit and cell hemoglobin concentration (MCHC) when compared to juveniles. However, there was not significant difference (p>0.05) in the total thrombocytes and total white blood cell counts between fingerlings and juveniles. Juveniles A. gigas presented lower lymphocytes number and higher monocytes, neutrophils and eosinophils number when compared to the fingerlings. In further studies, A. gigas specimens with other ages should also be compared for a better understanding of the ontogenic development in this Amazon fish, because this information besides increase the knowledge of the physiology of this species, can aid in the establishment of strategies for its adequate handling.
Barbosa S.P.,Centro Universitario Do Leste Of Minas Gerais |
Elizeu T.S.,Centro Universitario Catolico Do Leste Of Minas Gerais |
Penna C.M.M.,Federal University of Minas Gerais
Ciencia e Saude Coletiva | Year: 2013
The term access is understood from the perspective of admission or entry into the system, related to the use of the system. This research seeks to analyze access to primary health care from the perspective of professionals in family health teams of three municipalities in the State of Minas Gerais: Ipatinga, Coronel Fabriciano and Santana do Paraíso. This work is a qualitative case study into the understanding of access on the part of professionals in family health teams. Twelve health professionals from different professional categories participated in the study. The data was collected through taped and subsequently transcribed interviews and analyzed using Bardin's content analysis technique. As a result the professionals showed that they believe that it is possible to improve working conditions and consequently the supply of services. The type of care and the inherent complexity make a difference in waiting time and the ability of the system to respond thereby impacting the quality of access. Professionals in the municipalities of Coronel Fabriciano and Santana do Paraíso consider the service to be organized and decisive. However, in the municipality of Jaipur, there is high management turnover that hampers the organization of the service and the smooth operation of flows and routines.
Figueredo C.C.,Federal University of Minas Gerais |
von Ruckert G.,Centro Universitario Do Leste Of Minas Gerais |
Giani A.,Federal University of Minas Gerais
Acta Botanica Brasilica | Year: 2016
Conservational studies of the threatened Atlantic Forest biome are frequently restricted to terrestrial ecosystems. We know little about the water bodies, specially considering that this biome covers the third largest system of lakes in Brazil. Some of these lakes are located inside the protected “Rio Doce State Park”, but many others are found outside this reserve. These external lakes are seldom studied, but understanding their response to human activities is essential for the conservation and the protection of the lakes inside the Park. We evaluated the effects of degradation in a lake outside the Park, which shows a constant bloom of the toxic invasive cyanobacteria Cylindrospermopsis raciborskii. Phytoplankton, climate and physico-chemical variables were assessed from 2011 to 2013 to evaluate which were the major determinants of the lake dynamics. Despite the seasonal changes, the lake was always eutrophic, and cyanobacteria, transparency and nutrients were the major indicators of water characteristics. The lake seems to be nitrogen-limited and cyanobacteria were negatively correlated withnitrogen levels, since the constantly dominant C. raciborskii is a superior competitor for N. We suggest that the monitoring of nitrogen levels is fundamental to establish management strategies to avoid harmful algae blooms in this Atlantic Forest lake. © 2016, Sociedade Botanica do Brasil. All rights reserved.
Caldeira I.C.,Centro Universitario Do Leste Of Minas Gerais |
Luizi-Ponzo A.P.,Federal University of Juiz de fora |
Esteves V.G.,Federal University of Rio de Janeiro
Plant Systematics and Evolution | Year: 2013
Spores from 19 species of the subgenus Aloma Kindb. of the moss genus Fissidens were analyzed by light and scanning electron microscopy. Aloma is the largest subgenus of Fissidentaceae and is characterized by the presence of a peristome of scariosus type. The spores of the subgenus Aloma are present in monads, size small to very small, heteropolar, plano-convex, with a proximal aperture region, and the sporoderm is formed by a perine, exine, and intine. The intine is not stratified, the exine is psilate, and the perine granulated. The ornamentation elements may occur singly or grouped on the surface of the spore. The aperture region shows irregular contours, ranging from circular to elongated, due to the weakness of the sporoderm proximal pole. The observed variations among species are related to different patterns of distribution of the sporoderm granules and nanogranules. Quantitative analysis combined with qualitative results did not allow all species of the subgenus Aloma to be distinguished. The results of this study demonstrate that the spore is a useful tool for taxonomic studies, and suggest that its characters be included in phylogenetic analyses, to assist in the reconstruction of the evolutionary history of mosses. © 2012 Springer-Verlag Wien.
De Alcantara F.L.,Aperam S.A |
Barbosa R.A.N.M.,Federal University of Minas Gerais |
Da Cunha M.A.,Centro Universitario Do Leste Of Minas Gerais
ISIJ International | Year: 2013
A fine dispersion of precipitates is a key requirement in the manufacturing process of Fe-3%Si grain oriented electrical steel. In the production of high permeability grain oriented steel precipitate particles of copper and manganese sulphides and aluminium nitride delay normal grain growth during primary recrystallization, causing preferential growth of grains with Goss orientation during secondary recrystallization. The sulphides precipitate during the hot rolling process. The aluminium nitride particles are formed during hot rolling and the hot band annealing process. In this work AlN precipitation during hot deformation of a high permeability grain oriented 3%Si steel is examined. In the study, transfer bar samples were submitted to controlled heating, compression and cooling treatments in order to simulate a reversible hot rolling finishing. The samples were analyzed using the transmission electron microscope (TEM) in order to identify the precipitates and characterize size distribution. Precipitate extraction by dissolution method and analyses by inductively coupled plasma optical emission spectrometry (ICP-OES) were used to quantify the precipitation. The results allowed to describe the precipitation kinetics by a precipitation-timeerature (PTT) diagram for AlN formation during hot rolling. © 2013 ISIJ.
Botelho R.A.,Military Institute of Engineering of Rio de Janeiro |
Diniz S.B.,Military Institute of Engineering of Rio de Janeiro |
Da Cunha M.A.,Centro Universitario Do Leste Of Minas Gerais |
Brandao L.P.,Military Institute of Engineering of Rio de Janeiro
Materials Research | Year: 2015
The effects of asymmetric and conventional deformations and annealing on the microstructure of non-grain-oriented (NGO) 3 wt% silicon steel were analyzed by X-ray diffraction, optical microscopy and magnetometry. The results suggest that pure asymmetric rolling tends to lessen magnetic losses. However, intermediate annealing resulted in lower planar anisotropy, which could be estimated from the magnetic anisotropy theory. In this work, it was shown that this theory is able to predict the J50 magnetic polarization values using crystallographic texture.