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Search Results: 1 - 10 of 66066 matches for " Ant?nio Carlos Sequeira;Azevedo "
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Composi??o molecular e origem paleobotanica de ambares da bacia do Araripe, Forma??o Santana
Pereira, Ricardo;Carvalho, Ismar de Souza;Fernandes, Antnio Carlos Sequeira;Azevedo, Débora de Almeida;
Química Nova , 2009, DOI: 10.1590/S0100-40422009000600032
Abstract: the terpenoid composition of seven amber samples from araripe basin (santana formation, crato member) has been analyzed by gas chromatography-mass spectrometry to determine their botanical origin. the diterpenoids, which have been identified in the fossil resin extracts are derived primarily from the abietane class, e.g., dehydroabietane, 4-epidehydroabietol, 16,17,18-trisnorabieta-8,11,13-triene, 7-oxo-16,17,19-trisnorabieta-8,11,13-trieno, dehydroabietic acid, ferruginol, hinokiol and hinokione. their composition is certainly typical for conifers, and angiosperms can be excluded as the botanical source, as no triterpene was identified. the terpenoid characteristics strongly support a relationship to the araucariaceae or podocarpaceae families. in addition, the fossil record of the embedding sediments (pollen and fossil leaves) also supports the proposal of these paleobotanical origins for the ambers.
Novas Ocorrências de mbar Provenientes da Bacia do Araripe (Forma o Santana, Membro Crato).
Ricardo Pereira,Ismar de Souza Carvalho,Débora de Almeida Azevedo,Antnio Carlos Sequeira Fernandes
Anuário do Instituto de Geociências , 2007,
Abstract: O ambar é uma resina fóssil originada devegetais superiores, tanto gimnospermas quantoangiospermas. A análise de sua composi o molecularpermite que se determine a origem botanica domesmo, também apresentando importancia pela suaextraordinária capacidade de preserva o de inclus esorganicas, tais como insetos, pequenos vertebrados erestos vegetais. No Brasil, a Bacia do Araripe constituia bacia sedimentar mais prolífica em ambar, tendosido relatadas diversas ocorrências. Esses registross o todos provenientes do Membro Crato, Forma oSantana (Cretáceo Inferior, Aptiano), consistindosempre em gotas de material resinoso imersos emcamadas de calcário laminado. A análise químicade algumas dessas amostras indicou a famíliaAraucariaceae como a possível fonte botanica dessesambares. Na localidade de Nova Olinda, CE, foramencontrados três fragmentos de material resinosocom aspecto vítreo amarelado e diametro médiode 1 cm, constituindo um novo registro de ambarno Brasil. Os fragmentos encontram-se imersosem placas de calcário laminado, típico do MembroCrato. A superfície dos mesmos apresenta aspectotrincado, com morfologia semelhante a um padr ode fratura do tipo conchoidal. Seus eixos maioresencontram-se paralelos aos planos de estratifica odo sedimento, estando deformados nesse sentidoprovavelmente devido à compress o litostática. Nomomento, esses ambares est o sendo analisados porCromatografia Gasosa acoplada à Espectrometriade Massas para caracteriza o da composi omolecular e conseqüente estabelecimento da origembotanica dos mesmos.
Lei de responsabilidade fiscal: condi??o insuficiente para o ajuste fiscal
Sodré, Antnio Carlos de Azevedo;
RAE eletr?nica , 2002, DOI: 10.1590/S1676-56482002000200010
Abstract: the study displayed here has as objective to discuss beyond fiscal responsibility law (frl) from the point of view of its relevance for the brazilian fiscal adjustment. for this, the main devices of this law are presented exploring their possible impacts in the brazilian public accounts in the next years. the analysis has been made based upon a theoretical reference that although simple it is extremely useful for the study of fiscal questions, therefore emphasizes the interrelation of the variables which influence directly in the evolution of the public debt. based on this reference and on the brief examination of the fiscal results presented by the country during the plano real it argues that the frl does not guarantee the brazilian fiscal balance therefore it does not exercise a significant control in the financial expenses of the public sector.
Dynamics of Protein Phosphatase Gene Expression in Corbicula fluminea Exposed to Microcystin-LR and to Toxic Microcystis aeruginosa Cells
José Carlos Martins,Jo?o Machado,António Martins,Joana Azevedo,Luís OlivaTeles,Vitor Vasconcelos
International Journal of Molecular Sciences , 2011, DOI: 10.3390/ijms12129172
Abstract: This study investigated the in vivo effects of microcystins on gene expression of several phosphoprotein phosphatases (PPP) in the freshwater clam Corbicula fluminea with two different exposure scenarios. Clams were exposed for 96 h to 5 μg L ?1 of dissolved microcystin-LR and the relative changes of gene expression of three different types of PPP (PPP1, 2 and 4) were analyzed by quantitative real-time PCR. The results showed a significant induction of PPP2 gene expression in the visceral mass. In contrast, the cyanotoxin did not cause any significant changes on PPP1 and PPP4 gene expression. Based on these results, we studied alterations in transcriptional patterns in parallel with enzymatic activity of C. fluminea for PPP2, induced by a Microcystis aeruginosa toxic strain (1 × 10 5 cells cm ?3) during 96 h. The relative changes of gene expression and enzyme activity in visceral mass were analyzed by quantitative real-time PCR and colorimetric assays respectively. The clams exhibited a significant reduction of PPP2 activity with a concomitant enhancement of gene expression. Considering all the results we can conclude that the exposure to an ecologically relevant concentration of pure or intracellular microcystins (-LR) promoted an in vivo effect on PPP2 gene expression in C. fluminea.
Row spacing and pruning regimes on organically grown cherry tomato
Azevedo, Vlamir F de;Abboud, Antnio Carlos de S;Carmo, Margarida Goréte F do;
Horticultura Brasileira , 2010, DOI: 10.1590/S0102-05362010000400002
Abstract: the effects of branch number and plant densities on organically grown cherry tomato yield and fruit quality were studied. labor costs for pruning were also assessed. the essay was conducted at the experimental fields of the universidade federal rural do rio de janeiro, brazil, from september 2004 to january 2005. a factorial design was used combining three row spacings (0.4, 0.6 and 0.8 m), two cherry tomato cultivars (hybrid 'super-sweet' and a local self pollinated 'perinha') and three pruning regimes (free growth, one branch per plant and two branches per plant). the row spacing treatment of 0.6 x 1.5 m resulted in lower number of fruits when compared to the 0.4 x 1.5 m treatment, however, producing fruits with higher individual average mass, which resulted in similar final yield. these yields were higher than the 0.8 m treatment. yield increases due to the higher number of plants per area were mostly due to the increase of fruit number, which compensated for the decrease of fruit size and mass. the 'free growth' treatment yielded similarly to the two branches per plant treatment. the labor costs were lower under 'free growth' due to the absence of pruning. both cultivars responded similarly to plant population and pruning regimes.
Influência do modo de armazenamento na microinfiltra??o de dentes decíduos restaurados com diferentes sistemas adesivos: estudo in vitro
GHERSEL, Eloisa Lorenzo de Azevedo;GUEDES-PINTO, Antnio Carlos;CIAMPONI, Ana Lídia;
Pesquisa Odontológica Brasileira , 2001, DOI: 10.1590/S1517-74912001000100006
Abstract: the influence of the method of storage of teeth and the effect of two kinds of dentin-bonding agents on the microleakage at the axial and cervical walls of composite restorations, in primary second molars, were evaluated. the samples were divided in three groups: dehydrated, hydrated and frozen. the dehydrated group was kept dry, the hydrated group was stored in physiological saline solution under refrigeration, and the frozen group was kept in the freezer, also immersed in physiological solution. the samples received two vertical slot preparations: a mesio-occlusal and a disto-occlusal one. in the mesio-occlusal cavities, scotchbond multi-use adhesive system was used, whereas in the disto-occlusal cavities prime & bond 2.1 system was used, and all cavities were filled with solitaire composite resin. the groups were then thermocycled and immersed in silver nitrate solution. microleakage was measured by means of a digitized image system and the values were submitted to statistical analysis. the results showed that the method of storage had no statistically significant influence on marginal microleakage. microleakage at the cervical wall was significantly greater than that at the axial wall, with 99,9% of certainty. the adhesive systems did not show significant influence on microleakage, in the studied methods of storage. however, there was statistical difference in the dehydrated group samples, with the use of prime & bond 2.1 adhesive, when considering the margins of the restoration (axial and cervical).
Transradial approach for coronary interventions
Brito José Carlos,Azevedo Júnior Antnio,Oliveira Adriano,Von Sohsten Roberto
Arquivos Brasileiros de Cardiologia , 2001,
Abstract: OBJECTIVE: To assess the feasibility and safety of coronary interventions performed through the radial artery. METHODS: We studied 103 patients with ages from 38 to 86 years (57±8.7), 90 (87%) males, and: radial pulse with a good amplitude, presence of ulnar pulse, a good collateral flow through the palmar arch assessed with the Allen's test. RESULTS: The vascular approach was obtained in 97 (94%) patients, 88 (91%) treated electively and 9 (9%) during acute myocardial infarction, for primary angioplasty; 56 (64%) unstable angina; 22 (25%) stable angina; 10 (11%) were asymptomatic, 6 referred for recanalization of chronic occlusion and 4 silent ischemia in the first week after acute myocardial infarction. We approached 107 arteries: anterior descending artery, 49 (46%); right coronary artery, 27 (25%); circumflex artery, 25 (23%); diagonal artery, 6 (6%); and 2 saphenous vein bypass grafts. We treated 129 lesions: 80 (62%) B2 type; 23 (18%) B1 type; 17 (13%) C type; and 9 (7%). A type. There were 70 stents , and 59 balloon angioplasties performed. Thirty-two (33%) patients used GP IIb/IIIa inhibitors. The mean duration of the elective procedure was 42.3±12.8 min. Success, correct stent deployment and residual lesion <20%, was reached in 100% of the lesions treated with stent implantation; arterial dilation with residual lesion <50% was obtained in 96% of the lesions treated with transluminal coronary angioplasty (TCA). Complications, were: 1 (1.0%) non-Q-wave acute myocardial infarction; 2 (2%) hematomas in the forearm; and 2 losses of radial pulse. CONCLUSION: Radial artery aproach is practical and safe for percutaneous coronary interventions there was a low incidence of complications.
Influência do modo de armazenamento na microinfiltra o de dentes decíduos restaurados com diferentes sistemas adesivos: estudo in vitro
GHERSEL Eloisa Lorenzo de Azevedo,GUEDES-PINTO Antnio Carlos,CIAMPONI Ana Lídia
Pesquisa Odontológica Brasileira , 2001,
Abstract: Foi avaliada, in vitro, a influência do modo de armazenamento e de dois tipos de adesivos dentinários sobre a microinfiltra o nas paredes axiais e cervicais de dentes decíduos restaurados com resina composta. As amostras foram divididas de acordo com o modo com que foram armazenadas e os grupos foram classificados em: Congelado, Hidratado e Desidratado. O grupo Congelado foi mantido no "freezer", em solu o fisiológica, o grupo Hidratado foi armazenado em solu o fisiológica em geladeira e o grupo Desidratado foi mantido seco. Foram realizados preparos tipo "slots" verticais: ocluso-mesial e ocluso-distal. Nos preparos ocluso-mesiais, utilizou-se o adesivo Scotchbond Multi-Uso e nos ocluso-distais o Prime & Bond 2.1, sendo todos restaurados com resina composta Solitaire. Após termociclagem, foram imersos em corante e os valores de microinfiltra o mensurados através de sistema de imagens digitalizadas e submetidos à análise de variancia. Os resultados demonstraram que o modo de armazenamento n o apresentou influência estatisticamente significante na microinfiltra o das restaura es. A microinfiltra o na parede cervical foi significantemente maior que na parede axial, com seguran a de 99,9%. Os adesivos utilizados n o apresentaram influência significante na microinfiltra o, nas diferentes formas de armazenamento estudadas. Porém, houve diferen a estatisticamente significante nas amostras do grupo Desidratado, com o adesivo Prime & Bond 2.1, considerando as margens da restaura o (axial e cervical).
SURTO DE SARNA CORIóPTICA EM CAPRINOS NA CIDADE DE GRAVATá, REGI O AGRESTE DO ESTADO DE PERNAMBUCO OUTBREAK OF CHORIOPTIC MANGE IN GOATS IN THE CITY OF GRAVATá IN PERNAMBUCO′S AGRESTE REGION
Janaina Azevedo Guimar?es,Alexandre Cruz Dantas,Antnio Carlos Lopes Camara,José Augusto Bastos Afonso
Ciência Animal Brasileira , 2009,
Abstract: A sarna corióptica é de rara ocorrência em caprinos, no entanto trata-se de uma enfermidade cutanea importante, resultando em perdas econ micas decorrentes do retardo no desenvolvimento dos animais, da perda de peso e do prejuízo à indústria de couro. Desse modo, o objetivo do presente artigo é relatar a ocorrência de um surto de sarna corióptica em um rebanho caprino criado no município de Gravatá (Lat. 08° 12’ 04’’ S e Long. 35° 33’ 53’’ O), regi o Agreste do estado de Pernambuco. Os animais apresentavam extensas áreas de alopecia, eritema, crostas e espessamento da pele na regi o das axilas, peito, ventre e as faces caudal e craniomedial dos membros posteriores, além de intenso prurido. Foi realizado raspado cutaneo e identificado o ácaro Chorioptes bovis spp. PALAVRAS-CHAVES: Caprinos, Chorioptes spp, sarna. Chorioptic mange is of rare occurrence in goats, although it is an important skin disease resulting in economic loss due to the delay in the development of the animals, weight loss and economic losses to the leather industry. Thus, the aim of the present article was to report the occurrence of an outbreak of chorioptic mange in a goat flock reared in the city of Gravatá, (Lat. 08° 12’ 04’’ S and Long. 35° 33’ 53’’ W) in Pernambuco′s Agreste region. The animals showed wide alopecia areas, erythema, crusts and skin thickness in the following areas: armpits, sternum, ventral abdomen, caudal and cranium-medial facets of the hind legs and severe scratching. Chorioptes bovis spp was identified in skin scrapings. KEY WORDS: Chorioptes spp, goats, mange.
Morphological and biomechanical study of abdominal aorta of rats submitted to experimental chronic alcoholism
Cerqueira, Nereide Freire;Yoshida, Winston Bonetti;Müller, Sérgio Swain;Sequeira, Júlio Lopes;Rodrigues, Antnio de Castro;Padovani, Carlos Roberto;
Acta Cirurgica Brasileira , 2005, DOI: 10.1590/S0102-86502005000300004
Abstract: purpose: to assess the influence of experimental chronic alcoholism in the morphology and biomechanics of the aorta, in a rat model. methods: forty-four wistar rats were randomly divided into two groups of 22 animals each: in the alcoholism group, the rats received water mixed to increasing concentrations of ethyl alcohol; and control group: the rats received pure water for 180 days. the animals were then killed by an overdose of pentobarbital and the abdominal aortas were excised for histological (hematoxylin-eosin, masson, calleja, and picrosirius red stain), histomorphometrical, and biomechanical analysis. results: histology and histomorphometry did not show differences in aorta morphology of both groups. biomechanical analysis showed a significantly greater yield point elongation in the alcoholic rat group (p<0.05). conclusion: chronic alcoholism did not cause morphological alterations in the aortic wall but increased elongation, without modifying any other mechanical properties.
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