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Search Results: 1 - 10 of 380623 matches for " Maria J. dos;Rocha "
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New records of Parvalona parva (Crustacea: Anomopoda: Chydoridae) from Brazil, with first description of the male
Elmoor-Loureiro, Lourdes M.A.;Santos-Wisniewski, Maria J. dos;Rocha, Odete;
Zoologia (Curitiba) , 2009, DOI: 10.1590/S1984-46702009000200022
Abstract: the neotropical species parvalona parva (daday, 1905) was previously reported only from two localities (northern argentina and len?óis maranhenses, brazil). in the present paper, seven new records of p. parva from brazil are presented. the specimens were collected from small waterbodies located in the federal district and the states of s?o paulo, pará, and pernambuco. these new records suggest that this species is not as rare as previously believed. the male, sexual female, and the lateral head pores of parthenogenetic females are described and illustrated for the first time.
Synchaeta jollyae (Shiel & Koste) (Rotifera, Synchaetidae): an overlooked species or a newcomer in Neotropical freshwaters?
Negreiros, Natalia F.;Santos, Renata M. dos;Oliveira, Laira Lúcia Damasceno de;Santos-Wisniewski, Maria J. dos;Rocha, Odete;
Iheringia. Série Zoologia , 2012, DOI: 10.1590/S0073-47212012000200007
Abstract: populations of synchaeta jollyae (shiel & koste, 1993) (rotifera), a species recently recorded for the first time in brazil and south america, were analyzed in reservoirs in southeast brazil. sampling was carried out monthly from august 2006 to july 2007 at furnas reservoir in the rio grande basin, state of minas gerais, and in four cascade reservoirs in the tietê river basin (barra bonita, bariri, ibitinga and nova avanhandava) state of s?o paulo, in june and september 2008 and in january and may 2009. synchaeta jollyae occurred in most samples and periods. from the results obtained it is evident that s. jollyae occurs in water bodies of varied trophic status but reaches larger populations in eutrophic water bodies and during lower temperature periods. the greatest densities of s. jollyae were found in the eutrophic bariri reservoir, on the tietê river, during the winter. mann-whitney test confirmed the significant difference between the population densities in periods of high and low temperatures, with populations reaching higher densities at lower temperatures. it is not yet possible to tell whether s. jollyae is a widely distributed species that has been overlooked in previous plankton studies in south america. wherever these populations of s. jollyae might have originated, it appears to be a species well established and adapted to a wide range of conditions in the neotropics.
Cromoendoscopia com azul de metileno para diagnóstico de es?fago de Barrett
Saporiti, Marcela Rocha Loures;Souza, Raquel Canzi de Almada e;Pisani, Júlio César;Amarante, Heda Maria Barska dos Santos;Carmes, Eliane Ribeiro;Sakamoto, Danielle Giacometti;
Arquivos de Gastroenterologia , 2003, DOI: 10.1590/S0004-28032003000300002
Abstract: background: barrett's esophagus is a condition in which the normal stratified squamous epithelium of the esophagus is replaced by specialized intestinal metaplasia, that carries an increased risk for the development of adenocarcinoma of the esophagus. dysplasia and initial stage carcinoma generally precede this neoplasm; the increased risk has led to attempts at early detection of these lesions through periodic upper endoscopy and biopsies. the continued rise in the incidence of adenocarcinoma of the esophagus has fueled resurgent interest in the use of a variety of endoscopic techniques, like methylene blue chromoendoscopy, to improve the diagnosis of barrett's esophagus and associated complications. aim: to determine if methylene blue chromoendoscopy directed biopsies offer advantage over the conventional technique in the detection of barrett's esophagus. material and method: forty-five patients with previous diagnosis of barrett's esophagus were enrolled in this study; all of them underwent upper endoscopy with random biopsies and upper endoscopy with methylene-blue directed biopsies within 4 weeks, in the period between april and october, 2002. results: results of histologic examination of random biopsies and those of methylene blue directed biopsies were compared. sensitivity, specificity, positive and negative predictive values were 62,5%, 15,4%, 57,7% and 18,2%, respectively. no significant differences were found in the total number of biopsy specimens. differences were found in the total amount of time spent during each procedure (chromoendoscopy x conventional technique), with chromoendoscopy being significantly longer. conclusion: we concluded that methylene blue chromoendoscopy offered no advantage over the conventional method in the diagnosis of barrett's esophagus.
Características agroindustriais da cana-de-a?úcar em fun??o da aduba??o fosfatada, em solos de Pernambuco
Sim?es Neto, Djalma E.;Oliveira, Alexandre C. de;Rocha, Alexandre T. da;Freire, Fernando J.;Freire, Maria B. G. dos S.;Nascimento, Clístenes W. A. do;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2012, DOI: 10.1590/S1415-43662012000400003
Abstract: the p recommendations in northeastern brazil are based on research carried out in the decades of 70 and 80, being necessary a modernization in this recommendation, to focus the maximum capacity of p adsorption. therefore, this work aimed to evaluate agroindustrial sugarcane characteristics in soils in function of phosphate fertilization. five experiments were carried out at pernambuco state forest zone region. the soils were: argisoil yellow distrocoeso (padx); latosoil yellow distrofic (lad); argisoil yellow distrofic (pad); gleisoil haplic eutrofic (gxve); and espodosoil carbic duripanic (esko). the treatments consisted of seven p doses, determined in function of the maximum adsorption capacity of p. the experimental design was a completely randomized block, with four replications. the sugarcane variety rb863129 was used in pad, lad, gxve and eko soils and rb855536 on pad soil. the p fertilization increased agricultural and industrial productivities. total recoverable sugar (atr) values were not affected by phosphate fertilizer, being more elevated in soils with higher maximum adsorption capacity of p.
Extra??o de fósforo em solos cultivados com cana-de-a?úcar e suas rela??es com a capacidade tamp?o
Sim?es Neto, Djalma E.;Oliveira, Alexandre C. de;Freire, Fernando J.;Freire, Maria B. G. dos S.;Nascimento, Clístenes W. A. do;Rocha, Alexandre T. da;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2009, DOI: 10.1590/S1415-43662009000700005
Abstract: despite concerns with expected production, the phosphate fertilizer recommendations for pernambuco do not take into account influence of the buffer capacity of soil on p availability. therefore, this work had as objective to evaluate extraction methods to estimate p availability considering content and quality of clay fraction as well mineralogical, chemical and physical soil characteristics. the experiments were carried under field conditions at 'zona da mata' of sugarcane cropping area of the state. five soils were used: argisol yellow distrocoeso (padx); latosol yellow distrophic (lad); argisol yellow distrofic (pad); gleisol haplic eutrophic (gxve); and espodosol carbic duric (esko). the treatments consisted of seven doses of p, determined in function of the p maximum capacity of adsorption (pmca). the experimental design was a completely randomized treatment block, with four replications. in soil samples collected after treatment application, p was determined by mehlich-1, mehlich-3, bray-1 and ion-exchange resin extractors. ion-exchange resin did not present correlation with any physical or chemical characteristics of the soils, having extracted p indistinctly, and independent of the soil. however, mehlich-1 was highly sensible to buffer capacity of p in soil.
Cromoendoscopia com azul de metileno para diagnóstico de es fago de Barrett
Saporiti Marcela Rocha Loures,Souza Raquel Canzi de Almada e,Pisani Júlio César,Amarante Heda Maria Barska dos Santos
Arquivos de Gastroenterologia , 2003,
Abstract: RACIONAL: O es fago de Barrett é uma condi o na qual a mucosa escamosa esofágica é substituída por metaplasia intestinal especializada, que predisp e o paciente ao desenvolvimento de adenocarcinoma esofágico. Este é precedido por displasia e carcinoma precoce; o rastreamento dessas les es faz-se através de endoscopias digestivas periódicas com biopsias randomizadas. A incidência aumentada desse, tem despertado interesse no desenvolvimento de novas técnicas endoscópicas, como a cromoendoscopia com azul de metileno, para melhorar a identifica o do es fago de Barrett e suas complica es. OBJETIVO: Determinar se as biopsias dirigidas pela cromoendoscopia com azul de metileno oferecem vantagem em rela o ao método convencional na detec o do es fago de Barrett. MATERIAL E MéTODO: Estudaram-se 45 pacientes com diagnóstico prévio de es fago de Barrett, todos submetidos a dois exames de endoscopia digestiva alta com biopsias, em intervalo de 4 semanas, um convencional e outro com aplica o do corante, no período entre abril e outubro de 2002. RESULTADOS: Os resultados histológicos das biopsias de todos os exames foram comparados. Observou-se sensibilidade de 62,5%, especificidade de 15,4%, valor preditivo positivo de 57,7% e valor preditivo negativo de 18,2%. N o houve diferen a significativa quanto ao número de biopsias. O tempo de dura o da técnica de cromoendoscopia foi significativamente maior quando comparado ao da técnica convencional. CONCLUS O: N o se observou vantagem na utiliza o da cromoendoscopia em rela o à técnica randomizada no diagnóstico do es fago de Barrett.
Historical Land Use/Cover Changes and the Hemeroby Levels of a Bio-Cultural Landscape: Past, Present and Future  [PDF]
Angela Terumi Fushita, José Eduardo dos Santos, Yuri Tavares Rocha, Elisabete Maria Zanin
Journal of Geographic Information System (JGIS) , 2017, DOI: 10.4236/jgis.2017.95036
Abstract: The urbanization of a campus landscape has required much space for this expansion, reinforcing the status of geographical space as a limited resource. We analyzed the effects of land cover change assessed over temporal dataset on composition and configuration dynamics of UFSCar (Federal University of São Carlos) campus landscape, based on a descriptive view of the hemeroby levels, over a 54-year period (1962-2016), in order to understand the impacts of past anthropogenic induced landscape change and inform decision making with regard to biodiversity management. The classification of land use/cover dynamics, over time, was obtained based on screen digitizing of aerial photos and LandSat imagery. An ordinal scale ranging from ahemerob to metahemerob was applied to assess the hemerobiotic state of each land use type. Currently, The UFSCar landscape campus configures a biocultural mosaic in different stages of hemeroby. Thus a campus landscape dynamics model, which can be denoted as “forestry-conservation-urban model”, anthropogenic landscape is replaced by natural one, later by land cover reflecting the spatial anthropization process. Through time, two hemerobiotic trajectories were identified, in which 1) an euhemerob landscape matrix is substituted by an ahemerob one, resulting in increased naturalness of the campus landscape, and then 2) metahemerob patch types will later on increasing as a consequence of ongoing urbanization. Expressive amount of ahemerob patches in campus landscape fulfills one of the conditions for maintenance of the capacity for self-regulation and sustainability of a biocultural landscape. This framework provides an essential tool supporting with essential information about current and historical landscape sustainability for campus landscape management and support decision making process. The main institutional challenge for campus landscape sustainable management lies in the balance between the competitors of the campus landscape matrix: conservation x urbanization.
Fun??o ventricular após cirurgia de revasculariza??o: Gated SPECT comparado à ressonancia cardíaca
Mesquita, Cláudio Tinoco;Pessoa, Maria Carolina Pinheiro;Vasconcelos, Paulo Pontes;Oliveira Júnior, Amarino Carvalho;Dohmann, Hans Fernando Rocha;Reis, Adair Gomes dos;Fonseca, Lea Mirian Barbosa da;
Arquivos Brasileiros de Cardiologia , 2009, DOI: 10.1590/S0066-782X2009000500004
Abstract: background: the assessment of left ventricular function may be impaired by the abnormal interventricular septal motion frequently found after coronary artery bypass grafting (cabg). studies on the validation of gated spect as a tool for the assessment of left ventricular function in this patient group are scarce. objective: we investigated the agreement and correlation between left ventricular ejection fraction (lvef), end-diastolic volume (edv), and end-systolic volume (esv) as obtained using electrocardiogram-gated myocardial perfusion scintigraphy (gated spect) and cardiac magnetic resonance imaging in 20 patients undergoing coronary artery bypass grafting. methods: correlation was measured using spearman's correlation coefficient (ρ). agreement was assessed using bland-altman analysis. results: a good correlation was found between gated spect and cardiac magnetic resonance imaging in patients after cabg with regard to left ventricular ejection fraction (ρ = 0.85; p =0.0001), moderate correlation for end-diastolic volume (ρ = 0.51; p = 0.02), and non-significant correlation for end-diastolic volume (ρ = 0.13; p = 0.5). agreement ranges for lvef, esv and edv were: -20% to 12%; -38 to 54 ml and; -96 to 100 ml, respectively. conclusion: a reliable correlation was found for left ventricular ejection fraction as obtained by gated spect and magnetic resonance imaging in patients undergoing cabg. for ventricular volumes, however, the correlation is not adequate.
Sele??o de linhagens experimentais de soja para características agron?micas e tolerancia a insetos
Maia, Maria Clideana Cabral;Vello, Natal Antonio;Rocha, Maurisrael de Moura;Fonseca Júnior, Nelson Silva da;Lavorante, Osmir José;Pinheiro, José Baldin;Dias, Carlos Tadeu dos Santos;Assis, Giselle Mariano Lessa de;
Bragantia , 2009, DOI: 10.1590/S0006-87052009000100010
Abstract: this research aimed to evaluate experimental soybean lines, with the finality to identify genotypes that contine traits of elevate yield and insect tolerance. plant material included three populations derived from a 4×4 partial diallel having four parents insect resistants and four with elevated yield cultivars. the 24 experiments were carried out in randomized complete block design with two replications subdivided in three sets with common checks, testing the three populations in eight environments. there is genetic variability among lines in the three populations; the management systems were efficient as representative of the environmental diversity; the anhembi location exhibited with high seed yield in all situations; as for the ability in originating superior lines, the following parents stand out: iac-100, d72-9601-1, br-6, davis, and ias-5; the best outstanding biparental crosses occurred when the iac-100 parent was crossed with ias-5, davis, ocepar-4, and br-6.
Perfil de fermenta??o e perdas na ensilagem de diferentes fra??es da parte aérea de quatro variedades de mandioca
Mota, álvaro Diego Soares;Rocha Júnior, Vicente Ribeiro;Souza, André Santos de;Reis, Sidnei Tavares dos;Tomich, Thierry Ribeiro;Caldeira, Luciana Albuquerque;Menezes, Gustavo Chamon de Castro;Costa, Maria Dulcinéia da;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011000700010
Abstract: the objective of this work was to determine fermentative profile of silage of four cassava varieties. in the study of ph, ammonia nitrogen, organic acid, dry matter (dm) recovery index and silage densities, it was used a 4 × 3 factorial arrangement, with four repetitions, four cassava varieties (amarelinha, olho roxo, periquita and sabará) and three aerial part fractions (entire plant, surpluses of the planting and superior third). in the study of dry matter loss by gases and effluents, it was used a 4 × 3 × 7 factorial arrangement, with four replicates, composed of four cassava varieties, three aerial section fractions and seven silo opening dates (1, 3, 5, 7, 14, 28 and 56 days after ensilage). ensilage was done in laboratory silos made of pvc pipes. the obtained data were submitted to analysis of variance and for average comparison effect, the test of scott-knott was performed at the 5% level of significance. there was no significant difference among ph values, organic acid and silage densities of the different varieties but ph, ammonia nitrogen and silage densities of aerial section fractions differed among varieties. ammonia nitrogen of silages also differed among varieties. although fresh forage had presented dry matter values lower than 30%, values of ph were satisfactory. silages of superior-third fractions and plant remains present great fermentative quality. silages of this study present low dry matter loss.
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