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Search Results: 1 - 10 of 626116 matches for " F Célio M;Vieira "
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A 10-year experience with the Amatsu tracheoesophageal shunt
Vieira Mauro Becker M.,Maia Amélio F.,Ribeiro Jaime C.,Cunha Flávia C.
Revista Brasileira de Otorrinolaringologia , 2002,
Abstract: Introduction: Since 1991, we have done the tracheoesophageal shunt as described by Amatsu in candidates to a total laryngectomy. Our goal is to provide the patients a better speech rehabilitation that that obtained by the non-surgical techniques, and by doing so, lessen the oncological treatment impact on the patient's quality of life. Aim: This work revises the experience of our institution with the procedure during a 10 years period. Study design: Clinical retrospective. Material and method: We had 54 patients submitted to the procedure, 3 women e 51 men, with ages from 30 to 78 years old and a mean age of 59 years. All had scamous cell carcinoma, 10 from the piriform sinus, 2 from retrocricoide area, 6 from the supraglottis, 1 from the subglottis, 16 from the glottis and 19 were transglottic. According to the AJC staging system, 3 were stage II, 17 were stage III, 24 were stage IV and 10 were not staged. Previous radiotherapy as initial treatment had been done in 18 patients. During the laryngectomy, 33 patients had some type of neck dissection and in 15 of these patients the neck dissection was done bilaterally. A myocutaneous pectoralis major flap was needed in 5 cases and a deltopectoralis flap was used in one case. Postoperative radiotherapy was used in 20 patients. Local infections occurred in 36% of the cases, and all had a good outcome. One patient died in the early postoperative period. Results: Speech rehabilitation by the technique was successful in 70% of the cases. Aspiration occurred in 10 patients and, in 2 of these, the shunt had to be surgically closed. Conclusion: In conclusion, due to its low cost, good results with few complications, the Amatsu tracheoesophageal shunt continues in our service as the main technique for speech rehabilitation after laryngectomy.
Experiência de 10 anos com o shunt traqueoesofágico de Amatsu
Vieira, Mauro Becker M.;Maia, Amélio F.;Ribeiro, Jaime C.;Cunha, Flávia C.;Camargos, Fabiano;
Revista Brasileira de Otorrinolaringologia , 2002, DOI: 10.1590/S0034-72992002000500011
Abstract: introduction: since 1991, we have done the tracheoesophageal shunt as described by amatsu in candidates to a total laryngectomy. our goal is to provide the patients a better speech rehabilitation that that obtained by the non-surgical techniques, and by doing so, lessen the oncological treatment impact on the patient's quality of life. aim: this work revises the experience of our institution with the procedure during a 10 years period. study design: clinical retrospective. material and method: we had 54 patients submitted to the procedure, 3 women e 51 men, with ages from 30 to 78 years old and a mean age of 59 years. all had scamous cell carcinoma, 10 from the piriform sinus, 2 from retrocricoide area, 6 from the supraglottis, 1 from the subglottis, 16 from the glottis and 19 were transglottic. according to the ajc staging system, 3 were stage ii, 17 were stage iii, 24 were stage iv and 10 were not staged. previous radiotherapy as initial treatment had been done in 18 patients. during the laryngectomy, 33 patients had some type of neck dissection and in 15 of these patients the neck dissection was done bilaterally. a myocutaneous pectoralis major flap was needed in 5 cases and a deltopectoralis flap was used in one case. postoperative radiotherapy was used in 20 patients. local infections occurred in 36% of the cases, and all had a good outcome. one patient died in the early postoperative period. results: speech rehabilitation by the technique was successful in 70% of the cases. aspiration occurred in 10 patients and, in 2 of these, the shunt had to be surgically closed. conclusion: in conclusion, due to its low cost, good results with few complications, the amatsu tracheoesophageal shunt continues in our service as the main technique for speech rehabilitation after laryngectomy.
Karyotype studies in Brazilian species of Lobelia L., subgenus Tupa (Campanulaceae)
RUAS, PAULO M.;VANZELA, ANDRé L.L.;VIEIRA, ANA ODETE S.;BERNINI, CéLIO;RUAS, CLAUDETE F.;
Brazilian Journal of Botany , 2001, DOI: 10.1590/S0100-84042001000300002
Abstract: karyotypes of 14 populations including eight species of the genus lobelia were studied using root tip mitotic metaphases. all populations were tetraploid with 2n = 28 chromosomes. the chromosome base number x = 7 was confirmed for the genus. karyotype analysis showed that chromosome size varied from 1.05 μm to 2.02 μm with predominance of m and sm chromosome types. the karyotypes were similar among themselves with small intra- and interspecific variations on the size of haploid sets, symmetry indexes and centromere position of some chromosome pairs. these results showed that karyotypes of brazilian lobelias of the subgenus tupa were probably due to polyploidy associated with chromosomal rearrangements probably in small chromatin segments.
In vitro inhibition of Plasmodium falciparum by substances isolated from Amazonian antimalarial plants
Andrade-Neto, Valter F de;Pohlit, Adrian M;Pinto, Ana Cristina S;Silva, Ellen Cristina C;Nogueira, Karla L;Melo, Márcia RS;Henrique, Marycleuma C;Amorim, Rodrigo CN;Silva, Luis Francisco R;Costa, M?nica RF;Nunomura, Rita CS;Nunomura, Sergio M;Alecrim, Wilson D;Alecrim, M das Gra?as C;Chaves, F Célio M;Vieira, Pedro Paulo R;
Memórias do Instituto Oswaldo Cruz , 2007, DOI: 10.1590/S0074-02762007000300016
Abstract: in the present study, a quassinoid, neosergeolide, isolated from the roots and stems of picrolemma sprucei (simaroubaceae), the indole alkaloids ellipticine and aspidocarpine, isolated from the bark of aspidosperma vargasii and a. desmanthum (apocynaceae), respectively, and 4-nerolidylcatechol, isolated from the roots of pothomorphe peltata (piperaceae), all presented significant in vitro inhibition (more active than quinine and chloroquine) of the multi-drug resistant k1 strain of plasmodium falciparum. neosergeolide presented activity in the nanomolar range. this is the first report on the antimalarial activity of these known, natural compounds. this is also the first report on the isolation of aspidocarpine from a. desmanthum. these compounds are good candidates for pre-clinical tests as novel lead structures with the aim of finding new antimalarial prototypes and lend support to the traditional use of the plants from which these compounds are derived.
Sustained Reduction of the Dengue Vector Population Resulting from an Integrated Control Strategy Applied in Two Brazilian Cities
Lêda N. Regis, Ridelane Veiga Acioli, José Constantino Silveira, Maria Alice Varjal Melo-Santos, Wayner Vieira Souza, Candida M. Nogueira. Ribeiro, Juliana C. Serafim. da Silva, Antonio Miguel Vieira Monteiro, Cláudia M. F. Oliveira, Rosangela M. R. Barbosa, Cynthia Braga, Marco Aurélio Benedetti Rodrigues, Marilú Gomes N. M. Silva, Paulo Justiniano Ribeiro Jr., Wagner Hugo Bonat, Liliam César de Castro Medeiros, Marilia Sa Carvalho, André Freire Furtado
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0067682
Abstract: Aedes aegypti has developed evolution-driven adaptations for surviving in the domestic human habitat. Several trap models have been designed considering these strategies and tested for monitoring this efficient vector of Dengue. Here, we report a real-scale evaluation of a system for monitoring and controlling mosquito populations based on egg sampling coupled with geographic information systems technology. The SMCP-Aedes, a system based on open technology and open data standards, was set up from March/2008 to October/2011 as a pilot trial in two sites of Pernambuco -Brazil: Ipojuca (10,000 residents) and Santa Cruz (83,000), in a joint effort of health authorities and staff, and a network of scientists providing scientific support. A widespread infestation by Aedes was found in both sites in 2008–2009, with 96.8%–100% trap positivity. Egg densities were markedly higher in SCC than in Ipojuca. A 90% decrease in egg density was recorded in SCC after two years of sustained control pressure imposed by suppression of >7,500,000 eggs and >3,200 adults, plus larval control by adding fishes to cisterns. In Ipojuca, 1.1 million mosquito eggs were suppressed and a 77% reduction in egg density was achieved. This study aimed at assessing the applicability of a system using GIS and spatial statistic analysis tools for quantitative assessment of mosquito populations. It also provided useful information on the requirements for reducing well-established mosquito populations. Results from two cities led us to conclude that the success in markedly reducing an Aedes population required the appropriate choice of control measures for sustained mass elimination guided by a user-friendly mosquito surveillance system. The system was able to support interventional decisions and to assess the program’s success. Additionally, it created a stimulating environment for health staff and residents, which had a positive impact on their commitment to the dengue control program.
Avalia??o de argilas cauliníticas de Campos dos Goytacazes utilizadas para fabrica??o de ceramica vermelha
Vieira, C. M. F.;Pinheiro, R. M.;
Ceramica , 2011, DOI: 10.1590/S0366-69132011000300010
Abstract: this work has for objective to evaluate the effect of the variation, in the ceramic body composition, of the two main types of clays from campos dos goytacazes north of the state of rio de janeiro, in the processing and technical performance of the red ceramic. the clays designated as "strong" and "weak" were previously submitted to mineralogical, chemical and physical characterization tests. in the sequence, compositions were prepared varying the amount of the clays. the plasticity of the clays was determined by the atterberg method. specimens were prepared by uniaxial pressing at 20 mpa before firing at 900 oc. the technological properties evaluates were: linear shrinkage, water absorption and flexural strength. the results showed that the clays are mineralogically similar with the presence of kaolinite, quartz, gibbsite and muscovite mica. the "weak" clay significantly decreases the water absorption and the firing linear shrinkage of the compositions. however, it was also observed a decrease in the mechanical strength. this behavior is due to the presence of quartz in a higher amount.
Baixa prevalência das manifesta??es extra-articulares renais, cardíacas, pulmonares e neurológicas nas espondiloartrites: análise do Registro Brasileiro de Espondiloartrites
Rodrigues, Carlos Ewerton Maia;Vieira, Walber Pinto;Bortoluzzo, Adriana B.;Gon?alves, Célio Roberto;Silva, José Antonio Braga da;Ximenes, Antonio Carlos;Bértolo, Manoel B.;Ribeiro, Sandra L. E.;Keiserman, Mauro;Menin, Rita;Skare, Thelma L.;Carneiro, Sueli;Azevedo, Valderílio F.;Albuquerque, Elisa N.;Bianchi, Washington A.;Bonfiglioli, Rubens;Campanholo, Cristiano;Carvalho, Hellen M. S.;Costa, Izaias P.;Duarte, Angela P.;Kohem, Charles L.;Leite, Nocy H.;Lima, Sonia A. L.;Meirelles, Eduardo S.;Pereira, Ivanio A.;Pinheiro, Marcelo M.;Polito, Elizandra;Resende, Gustavo G.;Rocha, Francisco Airton C.;Santiago, Mittermayer B.;Sauma, Maria de Fátima L. C.;Valim, Valeria;Sampaio-Barros, Percival D.;
Revista Brasileira de Reumatologia , 2012, DOI: 10.1590/S0482-50042012000300008
Abstract: objective: to describe the extra-articular manifestations (cardiac, renal, pulmonary, and neurological), usually not related to spondyloarthritis (spa), in a large cohort of brazilian patients. materials and methods: this retrospective study analyzed 1,472 patients diagnosed with spa and cared for at 29 health care centers distributed in the five major geographic regions in the country, participating in the brazilian registry of spondyloarthritis (brs). all patients were assessed for the prevalence of major extra-articular manifestations (cardiac, renal, pulmonary, and neurological), classified according to the diagnosis [ankylosing spondylitis (as), psoriatic arthritis (psa), reactive arthritis (rea), arthritis associated with inflammatory bowel disease (ibd), undifferentiated spondyloarthritis (uspa), and juvenile spa], and according to the clinical presentation (axial, peripheral, mixed, and enthesitis). results: of the patients with spa assessed, 963 had as, 271 psa, 49 rea, 48 arthritis associated with ibd, 98 uspa, and 43 juvenile spa. cardiac involvement was reported in 44 patients (3.0%), pulmonary involvement in 19 (1.3%), renal involvement in 17 (1.2%), and neurological involvement in 13 patients (0.9%). most patients with visceral involvement had as or psa, and the mixed (axial + peripheral) and/or predominantly axial clinical form. conclusion: cardiac, renal, pulmonary, and neurological extra-articular manifestations are quite infrequent in spa, ranging from 0.9% to 3% in this large brazilian cohort, and affected predominantly patients with as and psa.
Ceramica argilosa incorporada com resíduo oleoso proveniente do setor petrolífero
Vieira, C. M. F.;Monteiro, S. N.;
Matéria (Rio de Janeiro) , 2006, DOI: 10.1590/S1517-70762006000300008
Abstract: the incorporation of an oily waste from the petroleum extraction sector into a red ceramic body was evaluated with respect to the changes produced on the physical and mechanical properties of the ceramic. compositions were prepared with amounts of the waste of 0, 1, 3, 5 and 10 wt.%, used to mold specimens by uniaxial pressure before firing at 900oc. the evaluated physical and mechanical properties were: bulk density, water absorption, linear shrinkage and flexural rupture strength measured by the 3 points test. the fracture surface of the specimens was studied by scanning electron microscopy (sem). the results showed that the waste addition to the clayey ceramic contributed to decrease of the porosity and, consequently, to improve the quality of the ceramic. this was attributed to the heat power of the waste that effectively contributed to the sintering reactions.
Evaluation of a plastic clay from the state of Rio de Janeiro as a component of porcelain tile body
Vieira, C. M. F.;Monteiro, S. N.;
Matéria (Rio de Janeiro) , 2007, DOI: 10.1590/S1517-70762007000100002
Abstract: the objective of this work was to evaluate the possibility of using a clay from the city of silva jardim, state of rio de janeiro, brazil, in the composition of porcelain tile body. the clay investigated was a plastic kaolinitic type with white color. initially, a typical porcelain body composed of the mixture of this clay with feldspar, quartz, kaolin and talc was prepared. specimens were then obtained from this porcelain mixture by uniaxially pressing samples until a dry density of 2.0 g/cm3 was achieved. these specimens were then fired at 1180°c in a laboratory furnace. physical and mechanical properties related to linear shrinkage, water absorption and flexural rupture strength, determined by weibull statistical method, were evaluated. microstructural analysis for the experimental body was performed by scanning electron microscopy, x-ray diffraction and mercury porosimetry. the technological properties of the elaborated composition satisfied the porcelain tile standard specifications. the microstructural analysis displayed small pores as well as a glassy matrix. the presence of quartz, mullite and plagioclase were also detected in the fired porcelain tile. these results indicated that the clay presents satisfactory characteristics to be used in porcelain tile body.
Influência da temperatura de queima na microestrutura de argilas de Campos dos Goytacazes-RJ
Vieira, C. M. F.;Monteiro, S. N.;
Ceramica , 2003, DOI: 10.1590/S0366-69132003000100003
Abstract: the present work had as objective to study the effect of the firing temperature on the microstructure of two typical clays from the campos dos goytacazes region. these clays are used in the fabrication of red ceramics such as bricks and roofing tiles. clay specimens were prepared through 20 mpa uniaxial pressing operation. the specimens were then fired at 950 oc, 1100 oc and 1250 oc. the phase composition of the clays was identified, before and after firing, by x-ray diffraction. the texture and the microstructure of each clay were evaluated by scanning electron microscopy. the results indicate that the clays show important microstructural changes due to the different mineralogical composition and the proper effect of firing temperatures.
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