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Search Results: 1 - 10 of 188128 matches for " José Roberto;Galv?o "
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Prevalence of antibodies to hepatitis B core antigen in blood donors in the middle west region of Brazil
Aguiar, José Ivan;Aguiar, Eliana;Paniago, Anamaria;Cunha, Rivaldo;Galvo, Luciney;Daher, Roberto;
Memórias do Instituto Oswaldo Cruz , 2001, DOI: 10.1590/S0074-02762001000200009
Abstract: the prevalence of antibodies to hepatitis b core antigen in 552 prime blood donors was of 9.4%. the majority (71.2%) has antibodies to hepatitis b surface antigen. the hepatitis b surface antigen was present in 0.7%, all of them antibodies to hepatitis b core antigen positive.
Avalia??o do endométrio em menopausadas após uso de isoflavonas
Wolff, Luis Paulo Galvo;Martins, Marcos Roberto;Bedone, Aloísio José;Monteiro, Ilza Maria Urbano;
Revista da Associa??o Médica Brasileira , 2006, DOI: 10.1590/S0104-42302006000600022
Abstract: objetive: to evaluate the endometrium of menopausal women before and after six months use of total isoflavone. methods: a non-controlled clinical, type "before and after" trial was carried out with 32 post-menopause women, between 40 and 60 years of age. they received 80mg/day of total isoflavones obtained from trifolium pratense (climadila) during six months. they were evaluated at the beginning and end of treatment by transvaginal pelvic ecography, hysteroscopy and endometrial biopsy. data analysis: data collected were registered by means of the epi info, version 6.04b software, data analysis was made using the sas version 8.2 statistics program, considering a significance level (a) of 0.05 and a 0.80 power (1-b). in order to study the average variation of endometrial thickness and variation of the hysteroscopic and hystologic findings the t student test for paired data was used. results: among the 32 participant women, six presented vaginal bleeding and three presented endometrial alteration when compared to the initial exams. two of the women developed endometrial cell proliferation and one of them endometrial hiperplasia. there were no significant alterations in relation to endometrial thickness. conclusion: in this study, three women who used isoflavones during the six month period presented endometrial activity.
Response Function Theory for Many-Body Systems away-from Equilibrium: Conditions of Ultrafast-Time and Ultrasmall-Space Experimental Resolution
Clóves G. Rodrigues,áurea R. Vasconcellos,José Galvo Ramos,Roberto Luzzi
Physics , 2012,
Abstract: A Response Function Theory and Scattering Theory applicable to the study of physical properties of systems driven arbitrarily away from equilibrium, specialized for dealing with ultrafast processes and in conditions of space resolution (including nanometric scale), are presented. The derivation is done in the framework of a Gibbs-style Nonequilibrium Statistical Ensemble Formalism. It is shown the connection of the observable properties with time and space-dependent correlation functions out of equilibrium. A generalized fluctuation-dissipation theorem, which relates these correlation functions with generalized susceptibilities is derived. It is also presented the method, useful for calculations, of nonequilibrium-thermodynamic Green functions. A couple of illustration with application of the formalism, consisting of the study of optical responses in ultrafast laser spectroscopy and Raman Scattering of electrons in III-N semiconductors (of "blue diodes") driven away from equilibrium by action of electric fields of moderate to high intensities, are described.
Thymoglobulin as an induction therapy: protection against ischemia and reperfusion injury
Lúcio Roberto Requi?o Moura,Maurício Galvo Pereira,Marcelino Dur?o,Eduardo José Tonato
Einstein (S?o Paulo) , 2006,
Abstract: Objective: To asses graft function and survival after one year inpatients at high risk of acute tubular necrosis (ATN) and to definethe impact of this lesion on allograft function in patients whoutilized an induction protocol with Thymoglobulin (Thymo).Methods: Thymo was utilized as an induction strategy. CD3+cells counting was monitored. Graft function and survival wasdemonstrated. Results: Seventy-eight patients who receivedkidneys from cadaveric donors utilized the referred protocol.Follow-up was 2 years. Cold ischemia time was 19.9 ± 4.8 hours.Thymo total doses was 7.48 ± 3.7. CD3+ cells counting was19.3 ± 22.3. Acute rejection occurred in 14.1% of cases, ATN in66.6% and CMV infection in 55.1%. One-year graft survival noncensoredby death was 95.9%, and serum creatinine was 1.56 ±0.53 mg/dl. Patients who presented ATN had longer length ofhospital stay (18.8 ± 6.1 vs. 10.4 ± 4.3 days, p < 0.010) andworse serum creatinine levels (1.66 ± 0.4 vs. 1.39 ± 0.6 mg/dl,p = 0.003). The only one variable related with graft function wasdonor age (when > 38 years, RR = 3.43, p < 0.001). Conclusion:Thymoglobulin induction provided an excellent graft survival anda low rate of acute rejection and good graft function until 2 yearsafter transplantation, despite high prevalence of ATN.
Deficiência de alfa-1 antitripsina: diagnóstico e tratamento
Camelier, Aquiles A;Winter, Daniel Hugo;Jardim, José Roberto;Barboza, Carlos Eduardo Galvo;Cukier, Alberto;Miravitlles, Marc;
Jornal Brasileiro de Pneumologia , 2008, DOI: 10.1590/S1806-37132008000700012
Abstract: alpha-1 antitrypsin deficiency is a recently identified genetic disease that occurs almost as frequently as cystic fibrosis. it is caused by various mutations in the serpina1 gene, and has numerous clinical implications. alpha-1 antitrypsin is mainly produced in the liver and acts as an antiprotease. its principal function is to inactivate neutrophil elastase, preventing tissue damage. the mutation most commonly associated with the clinical disease is the z allele, which causes polymerization and accumulation within hepatocytes. the accumulation of and the consequent reduction in the serum levels of alpha-1 antitrypsin cause, respectively, liver and lung disease, the latter occurring mainly as early emphysema, predominantly in the lung bases. diagnosis involves detection of low serum levels of alpha-1 antitrypsin as well as phenotypic confirmation. in addition to the standard treatment of chronic obstructive pulmonary disease, specific therapy consisting of infusion of purified alpha-1 antitrypsin is currently available. the clinical efficacy of this therapy, which appears to be safe, has yet to be definitively established, and its cost-effectiveness is also a controversial issue that is rarely addressed. despite its importance, in brazil, there are no epidemiological data on the prevalence of the disease or the frequency of occurrence of deficiency alleles. underdiagnosis has also been a significant limitation to the study of the disease as well as to appropriate treatment of patients. it is hoped that the creation of the alpha one international registry will resolve these and other important issues.
Host-induced morphological changes of Schistosoma mansoni Sambon, 1907 male worms
Machado-Silva, José Roberto;Galvo, Cleber;Presgrave, Octavio Augusto Fran?a;Rey, Luis;Gomes, Delir Corrêa;
Memórias do Instituto Oswaldo Cruz , 1994, DOI: 10.1590/S0074-02761994000300021
Abstract: in order to evaluate the permissiveness of nectomys squamipes to schistosoma mansoni and the influence of the albino mice on the morphological aspects of adult worms derived from a population isolated from n. squamipes, the morphology of adult s. mansoni sambon, 1907 male worms was studied using a digital image analyser (mop videoplan) and light microscopy. their sources were as follows: (1) recovered from the wild rodent n. squamipes brants naturally infected from sumidouro, rj, brazil; (2) recovered from albino mice experimentally infected with the strain derived from n. squamipes; (3) recovered after the isolation of a strain derived from aboriginal human infections in sumidouro. worms recovered from n. squamipes (group 1) showed body lenght and distance between suckers significantly bigger than those of the specimens maintained in mice (groups 2 and 3). the number of tests in group 1 was statistically less than of groups 2 and 3. group 2 strains which were maintained in mice, presented the lenght of the worms as the only significant different character. data show that: (1) n. squamipes is a more suitable host for the development of s. mansoni when compared to the albino mice; (2) a strain of s. mansoni isolated from a natural host undergoes morphological changes after its passage in the white mouse.
Effect of dentinal surface preparation on bond strength of self-etching adhesive systems
Rocha, Patrícia Itocazo;Borges, Alessandra Bühler;Rodrigues, José Roberto;Arrais, César Augusto Galvo;Giannini, Marcelo;
Brazilian Oral Research , 2006, DOI: 10.1590/S1806-83242006000100010
Abstract: the aim of this study was to evaluate the effects of dentin surface treatments on the tensile bond strength (tbs) of the self-etching primer clearfil se bond (cse) and the one-step self-etching one-up bond f (oub). the exposed flat dentin surfaces of twenty-four sound third molars were prepared with diamond bur at high-speed, carbide bur at low-speed or wet ground with #600 grit sic paper. the adhesive systems were applied to the dentin surfaces and light-cured according to the manufacturers' instructions. a 6-mm high composite crown was incrementally built-up and each increment was light-cured for 40 seconds. after being stored in water (37°c/24 h), the samples were serially sectioned parallel to the long axis, forming beams (n = 20) with a cross-sectional area of approximately 0.8 mm2. the specimens were tested in a universal testing machine at 0.5 mm/min. the cross-sectional area was measured and the results (mpa) were analyzed by two-way anova and tukey test (p < 0.05). overall, the groups treated with cse exhibited the highest tbs for all surface treatments. dentin surfaces prepared with carbide bur at low speed reduced tbs in the cse group; however, oub was not affected by surface treatments. the effect of surface abrasive methods on tbs was material-dependent.
Estudo de ovos de quatro espécies do gênero Meccus (Hemiptera, Reduviidae, Triatominae), vetores da doen?a de Chagas
Obara, Marcos Takashi;Barata, José Maria Soares;Silva, Nilza Nunes da;Ceretti Júnior, Walter;Urbinatti, Paulo Roberto;Rosa, Jo?o Aristeu da;Jurberg, José;Galvo, Cleber;
Memórias do Instituto Oswaldo Cruz , 2007, DOI: 10.1590/S0074-02762007000100002
Abstract: the objective of this work was to analyze the morphological, morphometrical, and histological characteristics of eggs of four triatomine bugs species still not studied, in order to understand phylogenetic aspects and to facilitate parameters used in taxonomy, with the purpose of a specific and generic characterization of these vectors in public health. the eggs of each species had come from the collections of the laboratory of triatomine bugs and culicid mosquitoes of the faculdade de saúde pública - usp (faculty of public health/usp). the morphologic studies were carried out through optic microscopy (om) and scanning electronic microscopy (sem). the eggs were measured with the help of the digital paquimeter starrett? 727. in relation to histological measures, microtome leica rm 2145? was used. similarities were evidenced in the exocorial architecture of the eggs when they were studied by om and sem. this similarity among the eggs suggests a recent speciation, probably derived from common ancestry, representing a monophyletic group. some structures were also detected by the histological cuts. the study has contributed to the magnification and recognition in generic and specific terms of the triatominae subfamily. these new data will be able to subsidize a better understanding to determine roles for each vector species and to facilitate parameters to be used in taxonomy.
A study of the scutellum in eight Chagas disease vector species from genus Triatoma (Hemiptera, Reduviidae) using optical and scanning electron microscopy
Obara, Marcos Takashi;Rosa, Jo?o Aristeu da;Ceretti Jr, Walter;Urbinatti, Paulo Roberto;Quintero, Lisardo Osório;Barata, José Maria Soares;Galvo, Cleber;Jurberg, José;
Memórias do Instituto Oswaldo Cruz , 2007, DOI: 10.1590/S0074-02762007005000027
Abstract: the aim of this study was to analyze the external morphology of the scutellum through optical microscopy and scanning electron microscopy (sem) in male specimens of triatoma costalimai, t. delpontei, t. eratyrusiformis, t. matogrossensis, t. infestans melanosoma, t. sherlocki, t. tibiamaculata, and t. vandae. a total of 30 photographs of the scutellum were made. magnification varied from 50x to 750x. regarding depth and forms of the central depression, the heart-shaped form was predominant, with some exceptions, so that this shape appears to be a common characteristic for species of genus triatoma laporte, 1832. in t. eratyrusiformis, a kind of sensillum with important taxonomic value was observed. the different sizes and shapes of the designs found on the posterior process of the scutellum were also of important taxonomic interest. the study of the scutellum based on sem showed valuable characteristics, allowing the use of this structure to aid the diagnosis of triatomine species. thus, more specimens in subsequent studies and analyses of morphometric parameters should contribute to agreement on phylogenetic aspects in this genus. a key to eight species of triatoma based on male scutellar morphology is presented.
Genetic control of grain yield and nitrogen use efficiency in tropical maize
Souza, Leandro Vagno de;Miranda, Glauco Vieira;Galvo, Jo?o Carlos Cardoso;Eckert, Fernando Roberto;Mantovani, éder Eduardo;Lima, Rodrigo Oliveira;Guimar?es, Lauro José Moreira;
Pesquisa Agropecuária Brasileira , 2008, DOI: 10.1590/S0100-204X2008001100010
Abstract: the objectives of this work were to study the genetic control of grain yield (gy) and nitrogen (n) use efficiency (nue, grain yield/n applied) and its primary components, n uptake efficiency (nupe, n uptake/n applied) and n utilization efficiency (nute, grain yield/n uptake), in maize grown in environments with high and low n availability. experiments with 31 maize genotypes (28 hybrid crosses and three controls) were carried out in soils with high and low n rates, in the southeast of the state of minas gerais, brazil. there was a reduction of 23.2% in average gy for maize grown in soil with low n, in comparison to that obtained with high n. there were 26.5, 199 and 400% increases in nute, nupe, and nue, respectively, for maize grown with low n. the general combining ability (gca) and specific combining ability (sca) were significant for gy, nue and nupe for maize grown in high n soil. only gca was significant for nupe for maize grown in low n soil. the gca and sca for nute were not significant in either environment. additive and non-additive genetic effects are responsible for the genetic control of nue and gy for maize grown in soils with high n availability, although additive effects are more important.
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