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Search Results: 1 - 10 of 390471 matches for " FLáVIO R; DE SOUZA "
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Colony cycle, foundation strategy and nesting biology of a Neotropical paper wasp Ciclo colonial, estrategia de la fundación y biología de anidación de una avispa de papel neotropical
DANIELLE M. S SINZATO,FLáVIO R ANDRADE,ANDRé R DE SOUZA,KLEBER DEL-CLARO
Revista chilena de historia natural , 2011,
Abstract: Polistes ferreri Saussure, 1853 is a Neotropical paper wasp often found in anthropic environments. However, there is little information available on biological, ecological and behavioral interactions of this species under these environmental conditions. This study investigated the colony cycle, foundation strategy and nesting biology of this species. From March of 2000 to February of 2004, several colonies were studied in the municipal district of Juiz de Fora, in southeastern Brazil. The colony cycle events of P. ferreri are concentrated in specific periods of the year. The colonies are established principally by association of females, the latter is the foundation strategy that confers the greatest success. Nidification on manmade substrates seems common for the species. The peduncle of the nest is increased in width to support the weight of colony members. Likewise, cells are increased in height, in accordance with the size of the layers of meconium, allowing accommodation of the immature. It is suggested that, at least for post-emergent colonies of P. ferreri, the cost of nest construction is not a factor limiting the development of the colonies. Finally, the results also support the idea that the reuse of cells is an advantageous strategy because it saves costs related to the construction of new cells. Polistes ferreri Saussure, 1853 es una avispa de papel neotropical encontrada a menudo en ambientes antrópicos. Sin embargo, hay poca información disponible sobre las interacciones biológicas, ecológicas y de comportamiento de esta especie en estas condiciones ambientales. Este estudio investigó el ciclo de la colonia, la estrategia de fundación y la biología de anidación de esta especie. Desde marzo de 2000 a febrero de 2004, varias colonias fueron estudiadas en el municipio de Juiz de Fora, en el sureste de Brasil. Los eventos del ciclo de la colonia de P. ferreri se concentran en determinados períodos del a o. Las colonias se establecen, principalmente, por asociación de hembras, siendo esta la estrategia que se traduce en un mayor éxito. La nidificación en sustratos artificiales parece común para la especie. El pedúnculo del nido va aumentando en ancho para soportar el peso de los miembros de la colonia. Del mismo modo, las celdas aumentan en altura, de acuerdo con el tama o de las capas de meconio, lo que permite el alojamiento de los inmaduros. Se sugiere que, al menos para las colonias de postemergentes de P. ferreri, el costo de la construcción del nido no es un factor que limita el desarrollo de las colonias. Por último, los resultados tambi
Production of polyclonal antibodies for lectin from Anticarsia gemmatalis hemolymph Produ o de anticorpos policlonais para lectina de hemolinfa de Anticarsia gemmatalis
Fernanda Bovo,Rogério Fernandes de Souza,Daniel R. Soza-Gomez,Flávio Moscardi
Semina : Ciências Biológicas e da Saúde , 2005,
Abstract: The velvet bean caterpillar Anticarsia gemmatalis promotes extensive damage to soybean and is controlled frequently by chemical insecticides. Due to risks to human and animal health as well as the environment, new approaches were developed to A. gemmatalis control such as the bioinsectide Baculoviru anticarsia. The development of resistance in A. gemmatalis populations treated along several generations with B. anticarsia was reported under laboratory conditions. The insects show complex mechanisms against microorganism infection, such as the lectins, that work as recognition molecules. The aim of this work was to develop polyclonal antibodies to A. gemmatalis lectin. The lectin activity in A. gemmatalis caterpillar hemolymph was evaluated using erythrocytes from human, rabbit, mouse, sheep and cow. Only bovine erythrocytes were not agglutinated by lectin. The rabbit erythrocytes showed stronger reactivity (1:512). Therefore the polyclonal antibodies were raised in rabbit immunized with autologous erythrocytes sensitized with lectin. The antibody to lectin showed a titer of 1:8 in immunodiffusion test. In this study we described a simple method for antibody production against hemolymph lectin without expensive purification techniques. A lagarta de Anticarsia gemmatalis promove extensos danos na cultura da soja e seu controle é geralmente baseado na aplica o de inseticidas químicos. Devido aos riscos à saúde humana, animal e ao meio ambiente, métodos alternativos de controle tem sido desenvolvidos como o bioinseticida Baculovirus anticarsia. Há relatos de desenvolvimento de resistência em popula es de A. gemmatalis submetidas, em laboratório, ao tratamento com baculovirus durante várias gera es. Os insetos apresentam mecanismos elaborados de prote o contra agentes infecciosos, como as lectinas, que atuam como moléculas de reconhecimento. Assim, o objetivo deste estudo foi desenvolver anticorpos policlonais para lectina de A. gemmatalis. A atividade de lectina de hemolinfa de lagartas de A. gemmatalis foi avaliada frente a hemácias humanas, de coelho, camundongo, carneiro e boi em ensaio de hemaglutina o. Apenas as hemácias de bovino n o foram aglutinadas pela lectina. As hemácias de coelho apresentaram maior reatividade com a lectina (1:512) e portanto os anticorpos policlonais foram produzidos em coelho imunizado com hemácias autólogas sensibilizadas com lectina. O anticorpo anti-lectina apresentou título de 1:8 em rea o de precipita o em gel. Assim, nesse estudo foi possível produzir anticorpos para lectina de A. gemmatalis sem necessidade de emp
Colony cycle, foundation strategy and nesting biology of a Neotropical paper wasp
SINZATO,DANIELLE M. S; ANDRADE,FLáVIO R; DE SOUZA,ANDRé R; DEL-CLARO,KLEBER; PREZOTO,FáBIO;
Revista chilena de historia natural , 2011, DOI: 10.4067/S0716-078X2011000300004
Abstract: polistes ferreri saussure, 1853 is a neotropical paper wasp often found in anthropic environments. however, there is little information available on biological, ecological and behavioral interactions of this species under these environmental conditions. this study investigated the colony cycle, foundation strategy and nesting biology of this species. from march of 2000 to february of 2004, several colonies were studied in the municipal district of juiz de fora, in southeastern brazil. the colony cycle events of p. ferreri are concentrated in specific periods of the year. the colonies are established principally by association of females, the latter is the foundation strategy that confers the greatest success. nidification on manmade substrates seems common for the species. the peduncle of the nest is increased in width to support the weight of colony members. likewise, cells are increased in height, in accordance with the size of the layers of meconium, allowing accommodation of the immature. it is suggested that, at least for post-emergent colonies of p. ferreri, the cost of nest construction is not a factor limiting the development of the colonies. finally, the results also support the idea that the reuse of cells is an advantageous strategy because it saves costs related to the construction of new cells.
Cine Letras Goytisolo Cartelera
Flávio Pimenta de Souza
Caligrama : Revista de Estudos Romanicos , 2000,
Abstract: Resumo: Estudo de investiga o sobre a obra literária do escritor Juan Goytisolo em que se analisam comparativamente as técnicas cinematográficas do projeto Dogma 95 e as técnicas literárias do referido autor. Palavras-chave: Literatura espanhola; Juan Goytisolo; cinema. Resumen: Estúdio de investigación sobre la obra literaria del escritor Juan Goytisolo en el que se analizan comparativamente las técnicas cinematográficas del proyecto Dogma 95 y las técnicas literarias de dicho autor. Palabras-clave: Literatura espa ola; Juan Goytisolo; cine. Keywords: Spanish literature; Juan Goytisolo; cinema.
Endonuclease IV Is the Main Base Excision Repair Enzyme Involved in DNA Damage Induced by UVA Radiation and Stannous Chloride
Ellen S. Motta,Paulo Thiago Souza-Santos,Tuany R. Cassiano,Flávio J. S. Dantas,Adriano Caldeira-de-Araujo,José Carlos P. De Mattos
Journal of Biomedicine and Biotechnology , 2010, DOI: 10.1155/2010/376218
Abstract: Stannous chloride (SnCl2) and UVA induce DNA lesions through ROS. The aim of this work was to study the toxicity induced by UVA preillumination, followed by SnCl2 treatment. E. coli BER mutants were used to identify genes which could play a role in DNA lesion repair generated by these agents. The survival assays showed (i) The nfo mutant was the most sensitive to SnCl2; (ii) lethal synergistic effect was observed after UVA pre-illumination, plus SnCl2 incubation, the nfo mutant being the most sensitive; (iii) wild type and nfo mutants, transformed with pBW21 plasmid (
Eficiência da subsolagem na profundidade de preparo do solo em fun??o da declividade do terreno
Pereira, Daniel Pena;Fiedler, Nilton César;Lima, Juli?o Soares de Souza;Guimar?es, Pompeu Paes;M?ra, R?mulo;Carmo, Flávio Cipriano de Assis do;
CERNE , 2012, DOI: 10.1590/S0104-77602012000400010
Abstract: the effectiveness of subsoiling by measuring the depths achieved in different classes of slope of a forest plantation was evaluated. this operation was made with a fertilizer trawling subsoiler with a single smooth parabolic rod depending on seven groups of slope and the maximum lateral inclination of the tractor to perform the subsoiling. it was determined the number and breadth of slope classes by sturges formula. data were assessed by regression analysis for data with repetition at 5% significance level. the proposed regression model was adequate to describe the values given that it presented significant result for the f test. for the adjustment of the regression equation, the coefficient of determination was 78.95%, representing the the depth values that are explained by the slope. thus, it can be said that the depth of subsoiling decreases as the steepness of the ground increases and is a limiter for the quality of the mechanized soil preparation. the results demonstrate that slopes up to 40% allowed the operation of subsoiling to reach the minimum depth of 0.50 m for forest cultivation.
Clinical and epidemiological features of oral cancer in a medical school teaching hospital from 1994 to 2002: increasing incidence in women, predominance of advanced local disease, and low incidence of neck metastases
Durazzo, Marcelo D.;Araujo, Carlos Eugenio Nabuco de;Brand?o Neto, José de Souza;Potenza, André de Souza;Costa, Pedro;Takeda, Flávio;Bianchi, Cristina;Tavares, Marcos R.;Silva Filho, Gilberto de Britto e;Ferraz, Alberto R.;
Clinics , 2005, DOI: 10.1590/S1807-59322005000400006
Abstract: purpose: description of clinical and epidemiological characteristics of patients who underwent surgery for oral cancer in a medical school teaching hospital, and determination of differences with respect to other institutions and/or periods of time. method: the charts of patients undergoing surgery for oral cancer from 1994 to 2002 were reviewed. data were collected in a spreadsheet in order to analyze clinical and epidemiological features.. results: a total of 374 patients having undergone 406 operations was identified. their ages varied from 14 to 94 years (mean = 57.4 years), with 255 men (68.2%), and 295 out 366 caucasian (80.6%). a majority had tumors of the tongue and/or floor of mouth (55.6%), while 20.3% had lip cancer. squamous cell carcinoma was found in 90.3%, and glandular carcinoma in 4%. t4 tumors in 39.6%, tis or t1 lesions in 15.2% of all patients. nearly 62% had no regional metastases, and the relative incidence in young patients (40 years or younger) reached 8.6%. conclusion: in spite of the predominance of locally advanced tumors, a majority of patients had no neck metastases. the 31.8% incidence in females indicates an increasing incidence of oral cavity cancer among women when compared to previous periods at the same institution.
Cranio-orbital approach for the paraclinoidal and anterior communicating aneurysms
Souza, Jorge Marcondes de;Rodrigues, Flávio F.;Silva, Marcelo R. da;Maron, Ricardo;Martins, Leonardo;Souto, Antonio A. do;Lima, Luciara S.;
Arquivos de Neuro-Psiquiatria , 1995, DOI: 10.1590/S0004-282X1995000400007
Abstract: aneurysms arising at the proximal intracranial carotid artery (between cavernous sinus and posterior communicating artery) and at the anterior communicating complex may present with technical difficulties regarding appropriate access without excessive brain retraction. in a series of 15 patients the authors show the use of the cranio-orbital approach, formerly designed in the access of skull base tumors, for these subgroups of aneurysms. they discuss the advantages of a basal avenue in minimizing brain retraction, better anatomical orientation, obviation of tissue ressection and easier extra-dural bone removal. it was not identified any complication due to the described approach.
Evaluation of reagent strips for ascitic fluid leukocyte determination: is it a possible alternative for spontaneous bacterial peritonitis rapid diagnosis?
Ribeiro, Tarsila C.R.;Kondo, Mario;Amaral, Ana Cristina C.;Parise, Edson Roberto;Bragagnolo Júnior, Maurício A.;Souza, Aécio Flávio Meirelles de;
Brazilian Journal of Infectious Diseases , 2007, DOI: 10.1590/S1413-86702007000100017
Abstract: in order to evaluate the accuracy of a urine reagent dipstick (multistix 10sg?) to determine ascitic fluid leukocyte count, we prospectively studied 106 cirrhotic patients from april 2003 to december 2004, in two different centers (federal university of s?o paulo - unifesp-epm and federal university of juiz de fora - hu-ufjf) for the rapid bedside diagnosis of spontaneous bacterial peritonitis. the mean age 54 ± 12 years, there was a predominance of males (eighty-two patients, 77%), and alcohol was the most frequent etiology (43%). forty-four percent of patients were classified as child b and fifty-one as child c (51%). abdominal paracentesis was performed both in outpatient and inpatient settings and the multistix 10sg? was tested. eleven cases of spontaneous bacterial peritonitis were identified by means of polymorphonuclear count. if we considered the positive multistix 10sg? result of 3 or more, the sensitivity, specificity, positive and negative predictive value were respectively 71%, 99%, 91% and 98%. with a positive reagent strip result taken as grade 2 (traces) or more, sensitivity was 86% and specificity was 96% with positive and negative predictive values of 60% and 99%, respectively. diagnostic accuracy was 95%. we concluded that the use of a urine reagent dipstick (multistix 10sg?) could be considered a quick, easy and cheap method for ascitic fluid cellularity determination in sbp diagnosis.
Feo-hifomicose sistêmica em c?o
Uch?a, Iana Carolina Pordeus;Santos, José R?mulo Soares;Souza, Almir Pereira de;Dantas, Ant?nio Flávio Medeiros;Borges, Olívia Maria Moreira;Medeiros, Larissa Coutinho de;
Ciência Rural , 2012, DOI: 10.1590/S0103-84782012000400015
Abstract: the objective of this study was to describe clinical, laboratorial and histopathological findings of systemic phaeohyphomycosis in a dog. the animal was presented with a history of fatigue, ascites, lethargy, weight and appetite loss and polydipsia. the therapy for erliquiose and babesiosis was started. after 11 days, the dog returned with severe liver disease and died after forty-eight hours. at necropsy, there were black nodules in various abdominal organs. histologically, necrotizing granulomatous reaction with hemorrhage associated with myriads of intralesional pigmented fungal hyphae was observed in multiple organs, characterizing systemic phaeohyphomycosis. thus, it is important to include this illness in the differential diagnosis of severe liver diseases in dogs with ascites.
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