oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

4 ( 1 )

2020 ( 39 )

2019 ( 314 )

2018 ( 516 )

Custom range...

Search Results: 1 - 10 of 256972 matches for " Gisela L. da;Rezende "
All listed articles are free for downloading (OA Articles)
Page 1 /256972
Display every page Item
Screening of the odour-activity and bioactivity of the essential oils of leaves and flowers of Hyptis Passerina Mart. from the Brazilian Cerrado
Zellner, Barbara D.;Amorim, Ana Carolina L.;Miranda, Ana Luisa P. de;Alves, Ruy J. V.;Barbosa, Jussara P.;Costa, Gisela L. da;Rezende, Claudia M.;
Journal of the Brazilian Chemical Society , 2009, DOI: 10.1590/S0103-50532009000200018
Abstract: the chemical profile of the essential oils obtained from the leaves and flowers of hyptis passerina mart., a rare species of the brazilian cerrado, has been determined for the first time. analyses by gc-ms showed sesquiterpenes as major compounds. β-epi-acorenol (35.7% and 32.8%, respectively from leaf and flower essential oils), was isolated and identified by 1d and 2d nmr. the flower-derived oil presented a higher concentration of hydrocarbon and oxygenated monoterpenes, while the leaf-oil was richer in diterpenes. the global odour impressions of both oils were given by direct analysis and gc-ms-o and were characterized as herbaceous with tea notes, and green, cooked and woody impressions for leaf-oil; herbaceous, with spicy, woody and minty notes for flower-oil. β-epi-acorenol, spathulenol, β-caryophyllene, and caryophyllene oxide were relevant for the odour-activity of both oils, as well as minor constituents, such as linalool. the antimicrobial activity was investigated by means of agar diffusion disc method and contact bioautography, against gram-positive and negative bacteria and yeast. both oils presented to be bioactive against the tested microorganisms with significant inhibition level.
Effect of oils sources on blood lipid parameters of commercial laying hens
Murata, LS;Ariki, J;Machado, CR;Silva, L da PG da;Rezende, MJM;
Revista Brasileira de Ciência Avícola , 2003, DOI: 10.1590/S1516-635X2003000300008
Abstract: the experiment was carried out to verify if total cholesterol, hdl-cholesterol and triacylglicerol plasma levels are affected when laying hens are fed rations containing different dietary oil sources. one hundred sixty 50 week-old hens, assigned to four treatments with five replicates using 8 hens per replicate were used. the experimental period was of 84 days divided in 3 cycles of 28 days each. in the last day of each cycle, blood samples of 2 hens per replicate were randomly choose and blood samples were collected. on the other hand, blood was also collected at 7 am, 11 am and 3 pm aiming to study the daily changes of these lipids. blood lipid parameters were not affected by different dietary oil sources (p > 0.05); however, hdl-cholesterol did change during the day, giving evidence that this lipid is indeed involved in the egg yolk formation.
Avalia??o da resistência de suturas duodenais com ou sem omentoplastia pediculada: estudo experimental em ratas
Rezende Neto, Jo?o Baptista de;Silva, Alcino Lázaro da;
Acta Cirurgica Brasileira , 1999, DOI: 10.1590/S0102-86501999000300007
Abstract: to study the effects of the omental patch on the repair of duodenal injuries, we created a full thickness duodenal incision in 90 female holtzman rats that were divided into 2 groups. g1 (n=45) had repair of the incision with an omental patch after a suture of the lesion, g2 (n=45) had a simple running suture of the incision. a control group g3 (n=45) had a laparotomy only. subgrupos of 15 animals from each group were then killed at 2, 7, and 14 days after the repair and a 4cm segment of the duodenum that included the repaired injury was ressected. this segment was subjected to air insuflation in order to test the scar?s resistance measured as cm/hg necessary to disrupt the repair. the coefficient of variation was used to evaluate the internal variability of the results obtained and whenever there was variability among the factors, the least significant difference test was applied to the results. we concluded that the omental patch did not promote any more resistance to a simple closure of a duodenal incision in any of the three post operative days in which the test was done.
Avalia??o do ciclo térmico de conforma??o por compress?o de pe?as em poli(sulfeto de fenileno) refor?ado com fibras contínuas de carbono
Costa, Gustavo G. da;Botelho, Edson C.;Rezende, Mirabel C.;Costa, Michelle L.;
Polímeros , 2008, DOI: 10.1590/S0104-14282008000100016
Abstract: thermoplastic composite parts were produced by the hot press compression molding process with three different thermal cycles, which were evaluated employing the material comparative analysis, before and after the manufacturing of parts. the properties of laminates and parts were evaluated by visual inspection, presence of voids or delamination by using optical microscopy, degree of crystallinity (doc) utilizing dsc technique and mechanical properties making use of the flexural test. the results showed no delamination or voids. however, when the coldest mold was used (100 °c), the mechanical properties decreased up to 25% and a significant difference of doc was observed from the part surfaces in contact with the mold (13%) to its centre (21%). this did not occur with the other processing conditions (molds at 170 and 210 °c), which exhibited docs around 20%.
Tarefa de leitura de palavras em voz alta: uma proposta de análise dos erros
Pinheiro,?ngela Maria V.; Cunha,Carolina Rezende da; Lúcio,Patrícia Silva;
Revista Portuguesa de Educa??o , 2008,
Abstract: in this study we investigated the strategies used by brazilian children in a wordlist reading aloud task. concentrating on the nature of the type of error that produces real words, we distinguished those kinds of responses that suggest the use of lexical processing (or a dictionary-look up strategy) from those that suggest the use of phonological processing (or a rule based strategy). we concluded that the "real word responses" for brazilian portuguese, differently from english, seem to indicate the use of phonological processing in reading, due to the fact that in all grades studied only a small proportion of the responses showed a lexical influence, indicated by lexicalizations. thus, based on the processing indicated by the response we suggest a classification of reading errors according to these two types: one which points to a lexical tendency and the other to a phonological tendency. the proposed error analysis could be used in the evaluation of developmental changes in reading processes.
Avalia o da resistência de suturas duodenais com ou sem omentoplastia pediculada: estudo experimental em ratas
Rezende Neto Jo?o Baptista de,Silva Alcino Lázaro da
Acta Cirurgica Brasileira , 1999,
Abstract: Estudamos os efeitos da omentoplastia pediculada como método de refor o de suturas sobre o duodeno. Foram utilizadas 135 ratas HOLTZMAN, divididas em nove subgrupos de quinze ratas cada (n=15). Após a realiza o de uma les o padronizada na segunda por o do duodeno, os animais, exceto os do grupo controle, foram submetidos, dependendo do subgrupo, a dois tipos diferentes de reparos: n sutura da les o e omentoplastia pediculada de refor o. n sutura da les o sem omentoplastia de refor o. A avalia o da resistência do reparo da les o duodenal, foi realizada através da insufla o de ar até a ruptura do segmento testado. Esta avalia o foi feita em três períodos pós-operatórios diferentes: dois, sete e 14 dias em todos os subgrupos. O coeficiente de varia o (CV) foi utilizado como forma de avaliar a variabilidade interna das variáveis centrais do estudo. Nos casos em que a análise indicou a existência de influência de algum fator ou de intera es entre os fatores estudados, realizamos as compara es múltiplas de médias segundo o teste "Least Significant Difference" (LSD). Os achados mostraram que a realiza o de uma omentoplastia pediculada como refor o de um reparo sobre uma les o padronizada do duodeno, quando comparado a uma simples sutura, n o aumentou a resistência do reparo. N o importando o dia de pós-operatório em que o teste de resistência foi realizado. Os achados histológicos demonstraram que a omentoplastia pediculada proporcionou rea o inflamatória intensa no nível do reparo.
Teor de nitrato em alface hidrop nica em fun o de vaz es e períodos de pós-colheita Nitrate content in hydroponic lettuce in function of flow rate and post-harvest periods
Antonio Aprígio,Roberto Rezende,Paulo S. L. de Freitas,André R. da Costa
Revista Brasileira de Engenharia Agrícola e Ambiental , 2012, DOI: 10.1590/s1415-43662012000900004
Abstract: O objetivo do trabalho foi determinar o teor de nitrato (NO3-) presente em plantas de alface (Lactuca sativa L.) da cultivar Vera, conduzida por hidroponia, em fun o de vaz es e períodos de pós-colheita. O experimento foi realizado no município de Cascavel, PR, em casa de vegeta o da Universidade Estadual do Oeste do Paraná (UNIOESTE). As plantas foram nutridas mediante utiliza o de uma solu o nutritiva caracterizada por possuir condutividade elétrica média de 1,2 dS m-1 e que, ao percorrer toda a bancada de cultivo, retornava ao tanque de irriga o e reiniciava o processo, constituindo, desta forma, um sistema fechado. No experimento, utilizou-se o delineamento inteiramente casualizado com oito repeti es que foram representadas, individualmente, por duas plantas de alface, no esquema fatorial (3 x 4). Os tratamentos resultaram da combina o entre três vaz es (0,5; 1,0 e 1,5 L min-1) e quatro períodos de armazenamento pós-colheita (0; 24; 48 e 72 h). A determina o do teor de nitrato foi realizada por meio do método colorimétrico e os valores obtidos foram inferiores ao limite máximo exigido pela Comunidade Europeia. Os fatores investigados influenciaram significativamente os teores médios de nitrato. The objective of this study was to determine the nitrate (NO3-) content present in lettuce plants (Lactuca sativa L.) of the Vera cultivar, produced under hydroponic system, in function of different flow rates and post-harvest periods. The experiment was conducted in the city of Cascavel-PR, in a greenhouse of the Universidade Estadual do Oeste do Paraná (UNIOESTE). The plants were nourished by the use of a nutrient solution, characterized by mean electrical conductivity of 1.2 dS m-1 which after passing the entire growing bench, returned to the irrigation tank and restarted the process, forming a closed system. The experiment was conducted in completely randomized design with eight replications, which were represented, individually, by two lettuce plants, in the factorial scheme (3 x 4). The treatments resulted from the combination among three flow rates (0.5; 1.0; and 1.5 L min-1) and four post-harvest storage periods (0; 24; 48; and 72 h). The nitrate content was determined by the colorimetric method and the obtained values were lower than the maximum limit required by the European Community. The investigated factors influenced significantly the mean levels of nitrate.
Tarefa de leitura de palavras em voz alta: uma proposta de análise dos erros
?ngela Maria V. Pinheiro,Carolina Rezende da Cunha,Patrícia Silva Lúcio
Revista Portuguesa de Educa??o , 2008,
Abstract: El estudio investiga las estrategias utilizadas por ni os brasile os en la lectura en voz alta de palabras aisladas. Tomando como foco la investigación de la naturaleza de los errores que generaron palabras reales, se han distinguido los tipos de respuestas que sugerían la utilización del proceso lexical (el reconocimiento automático de las palabras) de aquellas que sugerían el uso del proceso fonológico (o la construcción de la pronunciación de la palabra por el uso de procedimientos de conversión grafema-fonema). Se concluyó que las "respuestas palabras reales", en el portugués brasile o, al contrario de la lengua inglesa, parecen indicar el uso del proceso fonológico de lectura, pues en las series estudiadas sólo una peque a proporción de las respuestas denotó una influencia lexical, expresa por lexicalizaciones. Así, partiendo del proceso se alado por la respuesta, proponemos clasificar los errores de lectura en dos índices: uno indicativo de tendencia lexical y otro de tendencia fonológica. El análisis de errores propuesto puede ser utilizado para verificar el cambio de procesos de lectura a lo largo del desarrollo
Pérdidas de independencia e ideología: el caso de Portugal (1580-1640)
Gisela da Silva Guevara
Memorias: Revista Digital de Historia y Arqueología desde el Caribe , 2009,
Abstract: Este artículo tiene como objetivo mostrar cómo la autoridad de los monarcas lusos, que siempre ha sido fuerte desde la fundación del reino de Portugal, ha sido legitimada, tras la pérdida de la independencia entre 1580 y 1640, en un plan no solamente políticojurídico, sino también místico.
Rese a de "América Latina, Una y Diversa: Teorías y Métodos para su Análisis" de Heriberto Cairo y Gerónimo de Sierra
Gisela da Silva Guevara
Memorias: Revista Digital de Historia y Arqueología desde el Caribe , 2008,
Abstract:
Page 1 /256972
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.