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Search Results: 1 - 10 of 32759 matches for " Adilson Oliveira "
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Comparison of methods for the detection of biofilm production in coagulase-negative staphylococci
Adilson Oliveira, Maria de Lourdes RS Cunha
BMC Research Notes , 2010, DOI: 10.1186/1756-0500-3-260
Abstract: Among the 100 CNS isolates studied, 82% tested positive by PCR, 82% by the tube test, 81% by the TCP assay, and 73% by the CRA method. Using PCR as a reference, the tube test showed the best correlation with detection of the ica genes, presenting high sensitivity and specificity.The tube adherence test can be indicated for the routine detection of biofilm production in CNS because of its easy application and low cost and because it guarantees reliable results with excellent sensitivity and specificity.Coagulase-negative staphylococci (CNS) are the microorganisms most frequently involved in nosocomial infections among neonates. These infections are generally associated with the use of catheters and other medical devices [1]. The capacity to adhere to polymer surfaces and consequent biofilm production are the main virulence factors of CNS, especially S. epidermidis, the most frequently isolated species.The biofilm protects CNS against the action of antibiotics administered for the treatment of these infections and also against the patient's immune system. Removal of the foreign body is often necessary for cure [2,3]. In this respect, CNS infections seem to be related to the health condition of the patient and to the production of this extracellular polysaccharide [4,5].The biofilm consists of layers of cell clusters embedded in a matrix of extracellular polysaccharide, called polysaccharide intercellular adhesin (PIA), which consists of β-1,6-N-acetylglycosamine and is synthesized by N-acetylglucosaminyltransferase [6]. PIA is involved in cell-cell adhesion and is essential for biofilm production by CNS, which is observed in most clinical strains of S. epidermidis [7,8].The synthesis of PIA is mediated by the products of the chromosomal ica gene (intercellular adhesion), which are organized in an operon structure. This operon contains the icaADBC genes, in addition to the icaR gene which exerts a regulatory function and is transcribed in the opposite direction. Once t
Preoperative Intra-Aortic Balloon Counterpulsation in Coronary Artery Bypass Graft Patients with Severe Left Ventricular Dysfunction  [PDF]
Andrea Cristina Oliveira Freitas, Danilo B. Gurian, Wladmir F. Saporito, Leandro N. Machado, Louise Horiuti, Adilson C. Pires
World Journal of Cardiovascular Diseases (WJCD) , 2016, DOI: 10.4236/wjcd.2016.610036
Abstract: Background: The intra-aortic balloon pumping (IABP) is the most used ventricular mechanical assist device. In recent years, the preoperative use in patients with severe ventricular dysfunction presents itself as a great benefic strategy to the postoperative recovery. This paper aim is to evaluate the IABP post-operative benefit in patients with severe ventricular dysfunction. Methods: From January 2011 to March 2016, 125 patients underwent a coronary artery bypass graft (CABG) with cardiopulmonary bypass and preoperative IABP in Teaching Hospital of the ABC Medical School and Hospital Estadual Mario Covas. The inclusion criteria were the presence of severe ischemic cardiomyopathy with left ventricular ejection fraction (LVEF) less than or equal to 40%, estimated by Doppler echocardiography using the Simpson method. The preoperative LVEF was 30.25% ± 8.53% and the diastolic diameter of the left ventricle (LVDD) 67.75 ± 16.37 mm. IABP was installed approximately 15 hours before the surgery. Results: The patients required the IABP for 2.4 ± 1.58 days, and vasoactive drugs, 4.8 ± 2.12 days. We performed 3.2 ± 1.9 grafts per patient and the total length of stay was 07 ± 5.52 days. Cardiopulmonary bypass time was 67 ± 10.95 minutes and anoxia time, 46.4 ± 10.06 minutes. Twelve patients (9.6%) had pneumonia and four (3.2%), atrial fibrillation. We observed a LVDD reduction to 63 ± 16.26 (p = 0.068) and LVEF enhancement to 36.50 ± 16.86 (p = 0.144). The data were analyzed statistically according to the Wilcoxon test. There were no deaths. Conclusion: The initial experience of the authors with the preoperative IABP in patients with severe left ventricular dysfunction suggests great benefit in post-operative recovery with im-provement of LVEF and reduction of LVDD.
Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de Presidente Figueiredo, Amazonas
Hara, Francisco Adilson dos Santos;Oliveira, Luiz Antonio de;
Acta Amazonica , 2004, DOI: 10.1590/S0044-59672004000300002
Abstract: some isolated rhizobias, besides fixing n2, are also able to solubilize low soluble phosphates, making the p available both for plants and for themselves. some factors like toxic al and acidity, as in some amazonian soils, may decrease the population of these microorganisms. the present study evaluated the nodulation ability, tolerance to acidity and toxic aluminum, as well as the ability to solubilize ca and al phosphates of rhizobia isolated from agricultural soils the municipality of from presidente figueiredo, am. samples of soil under agricultural cultivation were collected and used as a source of inoculum for the cowpea bean. some rhizobia isolates were tested for tolerance to acidity and toxic al, as well as to verify their abilities to solubilize phosphates. the soil samples contained rhizobia populations capable of inducing the nodulation and improving the aerial biomass of cowpea bean under acidity (ph 4,5) and alic (2 cmolc al.l-1) conditions. the rhizobia population from the soil samples idnetified as inpa-pf2, inpa-pf3, inpa-pf4, inpa-pf5, inpa-pf13, inpa-pf15, inpa-pf22 and inpa-pf24 promoted increases of aerial biomass when compared to the control tratment (absence of inoculum). twenty-five percent of the isolates were tolerant to acidity and 23% to al. the ca phosphate was solubilized by 39% of the isolated rhizobia. however, just one isolate presented high solubilization index. the al phosphate solubilization ability was identified in 67% of the isolates. the majority of the isolates that solubilized ca phosphate (76.5% of the lineages) also solubilized the al phosphate.
Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos de Iranduba, Amazonas
Hara, Francisco Adilson dos Santos;Oliveira, Luiz Antonio de;
Pesquisa Agropecuária Brasileira , 2005, DOI: 10.1590/S0100-204X2005000700007
Abstract: aluminum content and acidity of amazonian soils may decrease the population of rhizobia, which fix n2, solubilize insoluble phosphates, and increase the availability of p in the productive systems. the aim of this work was to evaluate the nodulation capacity, tolerance to acidity and to toxic aluminum, as well as the capacity to solubilize calcium and aluminum phosphates of rhizobia isolates obtained from farm soil samples of iranduba, am, brazil. soil samples were used as source of inocula for cowpea bean, and isolates were extracted from the nodules, in order to test tolerance and solubilization. soil samples presented populations of rhizobia with potential to be used as source of inocula for cowpea. inpa-m10 tended to surpass all other inocula in relation to the shoot dry matter yield. there was a significant correlation between the number and mass of the nodules, indicating that isolated rhizobia presented nodules of similar sizes. the sensibility to acidity and aluminum was showed by 43% of the isolated rhizobia; the other presented itself as tolerant. the solubilization of calcium phosphate was observed in the presence of 57% of isolated rhizobia. the same proportion occurred in the solubilization of aluminum phosphate.
Novas tecnologias na sala de aula
Miguel Adilson de Oliveira Júnior,ária Lobo da Silva
ECCOM , 2010,
Abstract: This study has the goal to discuss about the new communication methods used in classroom. It is important to confirm that there is a great necessity to use them, but the teachers have to be trained to handle the equipment to become better the teaching and learning process. The technology are made to become easier the human being’s life and improve their lives. So, the teacher trained and the new technology have to be linked for education development in Brazil.
Sources of phosphorus associated inoculation with Pseudomonas fluorescens in development and maize yield Fontes de fósforo associadas à inocula o com Pseudomonas fluorescens no desenvolvimento e produtividade do milho
Danilo Pinceli Chaves,Claudemir Zucareli,Adilson de Oliveira Júnior
Semina : Ciências Agrárias , 2013,
Abstract: The increased use of fertilizers to raise phosphorus availability to plants has promoted a strong economic impact on agriculture. For the better efficiency of use of phosphate fertilizers, this study aimed to evaluate the effect of P sources linked to inoculation with Pseudomonas fluorescens via seeds, in the development and yield components of corn plants. The experiment was conducted in the field, in 6x2 factorial, in randomized block design with four replications. Were applied 120 kg ha-1 P in the soil through five sources: triple superphosphate (SFT), Gafsa rock phosphate, Itafos rock phosphate, SFT+Gafsa and SFT+Itafos, and a control treatment (no P). The seeds of the cultivar AG 8088 were subjected to inoculation or not with the Pseudomonas fluorescens strain 1008. The variables studied in the flowering were: plant height (AP), height of ear insertion (AIE), stem diameter (DC), leaf area AF), leaf dry mass (MSF), total dry weight (MST) and leaf P content (PF). At harvest, there was the assessment of yield components: number of kernels per ear (NG), weight of 100 grains (M100), P content in grain (PG), yield (PROD), harvest index (IC) and relative agronomic effectiveness (EAR). The inoculation with P. fluorescens to seeds increased the AIE and AP when used SFT. At control the rhizobacteria inoculation resulted in 87% of EAR. The applications of SFT and SFT+Itafos and SFT+Gafsa can be an alternative to farming systems, aiming to lower use of acidulated phosphate. The yield performance of corn was not altered by the P sources and levels of inoculation with P. fluorescens. A utiliza o crescente de fertilizantes para elevar a disponibilidade de P para as plantas tem promovido um forte impacto econ mico no setor agrícola. Visando a melhor eficiência do uso dos fertilizantes fosfatados, este estudo teve como objetivo avaliar o efeito de fontes de P associados à inocula o com Pseudomonas fluorescens via sementes, no desenvolvimento e nos componentes de produ o de plantas de milho. O experimento foi conduzido a campo, em esquema fatorial 6x2, em blocos casualizados, com quatro repeti es. Foram aplicados 120 kg ha-1 de P via solo por meio de seis fontes: Superfosfato Triplo (SFT), Gafsa, Itafós, SFT+Gafsa e SFT+Itafós, além do controle (sem P). As sementes da cultivar AG 8088 foram submetidas à inocula o ou n o com Pseudomonas fluorescens da Estirpe 1008. As variáveis analisadas no florescimento foram: altura de plantas (AP), altura da inser o da espiga (AIE), diametro do colmo (DC), área foliar (AF), massa seca de folhas (MSF), massa seca total (MST)
Concentra es e cargas de nitrato e fosfato na Bacia do Ribeir o Concórdia, Lontras, SC Concentrations and loads of nitrate and phosphate in the Ribeir o Concórdia river basin, Lontras, SC
Adilson Pinheiro,Vander Kaufmann,Danieli Schneiders,Daniela A. de Oliveira
Revista Brasileira de Engenharia Agrícola e Ambiental , 2013,
Abstract: Neste trabalho foram determinadas as concentra es e as cargas de nitrato e de fosfato inorganico total, na água de escoamento superficial, de drenagem e subterranea, na bacia do Ribeir o Concórdia, Lontras, SC. Foram coletadas 102 amostras durante 109 dias, em três se es fluviométricas, três lisímetros e três po os piezométricos, distribuídos no interior da bacia. As concentra es foram comparadas com os padr es estabelecidos nas Resolu es CONAMA no. 357/2005 e no. 420/2009. As concentra es de nitrato e de fosfato no escoamento e drenagem dos lisímetros foram maiores que aquelas das se es fluviométricas e dos po os piezométricas. Nas se es fluviométricas e no escoamento superficial do lisímetro com pastagem as concentra es de nitrato foram inferiores aos padr es estabelecidos para essas águas. As concentra es de fosfato nas se es fluviométricas e nos lisímetros tanto do escoamento superficial quanto da drenagem e nos piez metros, superaram os padr es das Resolu es CONAMA no. 357/2005 e no. 420/2009. As águas de drenagem nos lisímetros transportaram cargas de nitrato e de fosfato superiores àquelas do escoamento superficial; estas, por sua vez, transportaram cargas similares às dos rios. This study presents concentrations and loads of nitrate and total inorganic phosphate in surface runoff infiltrating water and subsurface flow in the basin of Ribeirao Concordia, Lontras, SC - Brazil . Over a 109-day period, 102 samples were collected from three river sections, three lysimeters and three piezometric wells in the interior of the basin. Concentrations were compared with the standards given in the CONAMA Resolutions 357/2005 and 420/2009. Concentrations of nitrate and phosphate in lysimeter drainage water and flows were greater than those in river sections and piezometric wells. In the river sections and in surface flow from the lysimeter under pasture, nitrate concentrations were lower than the benchmarks set for such waters. Phosphate concentrations in the river sections and in both lysimeter surface runoff and in drainage water, and in the piezometers, all exceeded the standards defined in CONAMA Resolutions 357/2005 and 420/2009. Drainage waters in the lysimeters transported nitrate and phosphate loads greater than those in surface runoff, which in turn transported loads of the same order of magnitude as in river flow.
Marcha de absor??o de macronutrientes na cultura do girassol
Zobiole, Luiz Henrique Saes;Castro, César de;Oliveira, Fabio Alvares de;Oliveira Junior, Adilson de;
Revista Brasileira de Ciência do Solo , 2010, DOI: 10.1590/S0100-06832010000200016
Abstract: this study aimed to establish curves of macronutrient accumulation in sunflower. the experiment was conducted in the field on a typic hapludox, at the experimental station of embrapa soja in londrina, state of paraná. the plots consisted of 14 25 m long rows spaced 0.70 m apart, resulting in a total area of 245 m2, with four replications. prior to sowing a fertilization seeding of 300 kg ha-1 of 05-20-20 npk fertilizer was applied. fertilization was split in two applications of 25 + 1 kg ha-1 n and b, which were applied 21 and 35 days after sowing, respectively. the hybrid brs 191 and a final plant density of 40,000 plants ha-1 were used. plant samples were collected every two weeks after emergence and separated in the different parts (petioles, leaves, stems and, when applicable, capitula and achenes). after drying, each plant part was weighed and ground to determine the n, p, k, ca, mg, and s content. from the contents of these nutrients and dry mass of each plant, the accumulation curve was obtained. it was found that for yields > 3,000 kg ha-1, brs 191 extracted about 150, 24, 286, 116, 42, and 24 kg ha-1 of n, p, k, ca, mg, and s, respectively, in the following order of extraction: k> n> ca> p = s. in addition to the relation to exportation, the nutrient order was: n> p = k> s = mg> ca. therefore, special attention should be paid to the maintenance of an adequate supply of n, k and ca, due to the high demand of sunflower.
Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites
Zabotto, Fabio Luis;Gualdi, Alexandre José;Eiras, Jose Antonio;Oliveira, Adilson Jesus Aparecido de;Garcia, Ducinei;
Materials Research , 2012, DOI: 10.1590/S1516-14392012005000043
Abstract: this study evaluates the structural, microstructural, electric and magnetic properties of nickel ferrite samples prepared through the solid state reaction. it was observed that an increase in the sintering temperature produces a higher cation concentration in the a site when compared to the b site. the assessment of magnetic properties showed that an increase in grain size leads to a decrease in the coercive fields verging on superparamagnetic values, while the saturation magnetization increases up to 46.5 am2.kg-1 for samples sintered at 1200 oc. the dc electric resistivity behavior of samples was attributed to the increase in the cross-sectional area of grains as well as the different oxidation states and distribution of cations amongst the lattice sites of the spinel structure.
Impact of brackets on smile esthetics: laypersons and orthodontists perception
Oliveira, Seandra Cordeiro de;Furquim, Rachel D'Aurea;Ramos, Adilson Luiz;
Dental Press Journal of Orthodontics , 2012, DOI: 10.1590/S2176-94512012000500009
Abstract: objective: this study evaluated the influence of orthodontic appliances on smile esthetics assessed by lay adolescents, lay adults and orthodontists. methods: a facial photograph of a smiling young woman was used under the following conditions: with metal orthodontic brackets ligated by different elastic ligature colors (green, red and gray), with ceramic bracket brackets (transparent elastic ligature) and without brackets, totaling five 15 x 20 cm pictures. for the photograph assessment, 16 lay adolescents, 16 lay adults and 16 orthodontists were randomly selected. the photographs were randomly arranged in an album, followed by a visual analog scale (vas) for the scores registration. scores in both evaluations of each group of evaluators (adolescents, adults and orthodontists) were submitted to error analysis by wilcoxon test and multiple comparison among groups performed by kruskal - wallis at 5% significance. results: orthodontists, adults and adolescents agreed in their opinions, although the orthodontists gave lower scores in their assessments. it could be observed that ceramic brackets were more acceptable concerning the smile esthetics, whereas the metal brackets received the lowest scores. conclusion: orthodontists, adults and even adolescents seem to prefer esthetic solutions during orthodontic treatment.
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