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Search Results: 1 - 10 of 172668 matches for " F.F. Oliveira "
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Linalool and methyl chavicol present basil (Ocimum sp.) cultivated in Brazil Linalol e metil-chavicol presentes em manjeric o (Ocimum sp.) cultivados no Brasil
R.A. de Oliveira,I.S. Moreira,F.F. Oliveira
Revista Brasileira de Plantas Medicinais , 2013,
Abstract: In Brazil, Ocimum species are commonly known as aromatic and restorative herbs. The present research aimed to study the chemical composition of the essential oils of fresh and dry basil (Ocimum sp) leaves obtained by hydrodistillation and analyzed by GC-FID and GC-MS. The obtained yield was 0.70% for dry leaves and 0.26% for fresh leaves. The major compounds were: linalool (29.50-32.26%) and methyl chavicol (36.81-41.62%). Eucalyptol could also be detected (9.99-7.68%). The oil from dry leaves presented a more complex chemical composition. This study serves to contribute to the knowledge of medicinal plants occurring in Brazil. No Brasil, as espécies de Ocimum s o conhecidas como ervas aromáticas e restaurativas. Nesse trabalho foi estudado a composi o química dos óleos essenciais das folhas frescas e secas de manjeric o (Ocimum sp) obtido por hidrodestila o e analisados por CG-FID e CG-EM. Os teores encontrados foram de 0,70% para as folhas secas e 0,26% para as folhas frescas. Os componentes majoritários foram: Linalol (29,50-32,26%) e metil-chavicol (36,81-41,62%). Eucaliptol também foi detectado (9,99-7,68%). O óleo das folhas secas apresentou composi o química mais complexa. Esse trabalho contribui para o conhecimento das plantas medicinais de ocorrência no Brasil.
Inferência robusta e heterocedástica em componentes de variancia, parametros e valores genéticos multirraciais
Oliveira, M.M.;Cardoso, F.F.;Osório, J.C.S.;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011000400010
Abstract: the objectives of this study were to evaluate a multibreed heteroskedastic animal model (mamr) to estimate residual variance heterogeneity due to breed, heterozigosity, sex and contemporary groups (cg) and robustness to outliers. differences on variance components, heritability and genetic values estimates were evaluated. it was used 4,016 records of post weaning weight gain (pwg) from brangus foundation herd of embrapa pecuária sul. data were analyzed by mamr with four different residual distribution specifications, which were defined by the nature of residual variance, homoskedastic (ho) or heteroskedastic (he) and by the gaussian (g) or student t marginal residual distribution. the best data fit was achived by using mamr-t-he and it was observed heteroscedasticity due to sex and animal heterozigosity and among contemporary groups. there were substantial differences in genetic variances of breed groups estimated by using different models and in the heteroskedastic, mamr-g-he and mamr-t-he. the greatest differences on heritability estimates occured among different breed groups. it was also noted a reordering in the ranking of superior animals regarded to genetic merit when heterogenous residual variances and robustness to outliers were considered. multibreed genetic evaluations by using the student t distribution model to describe residuals and assuming heterogenous residual variances are more appropriate to perform inference on genetic merit of animals from crossbreeding progenies of angus and nelore purebred animals.
Toxicological effects and resistance to pyrethroids in Boophilus microplus from Goiás, Brazil
Fernandes, F.F.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2001, DOI: 10.1590/S0102-09352001000500004
Abstract: in order to monitor the susceptibility of boophilus microplus to acaricides and improve control measures, the effects of cypermethrin, deltamethrin and permethrin on larvae obtained in the city of goiania in the brazilian state of goiás were studied. although these pyrethroids are already sold as acaricides, their cost-benefit efficiency has been questioned. fasting 14-21 day-old larvae were immersed in solutions of the acaricides under test, maintained at 27±1° c, and relative humidity over 80%, and observed under the stereoscope within an apparatus originally designed for studying the non-parasitic phase of the tick life cycle. the observed toxicological effects were: excitability, repetitive motion, decreased motor ability, detachment, paralysis, knock-down and cuticular proliferation of liquids and gases. the materials used in the manufacture of this apparatus consisted of disposable petri dishes, "organza" cloth and paraffin, none of which are toxic to tick larvae. mean death rates after 24h were 76.3%, 87.5%, 77.6%, 91.2%, 86.2% and 100% for 25 and 50ppm deltamethrin, 150 and 300ppm cypermethrin and 1250 and 2500ppm permethrin, respectively. the ticks were resistant to commercial concentrations of deltamethrin and cypermethrin. only 2500ppm permethrin produced the mortality recommended by the brazilian ministry of agriculture.
Atividade in vitro de permetrina, cipermetrina e deltametrina sobre larvas de Rhipicephalus sanguineus (Latreille, 1806) (Acari, Ixodidae)
Fernandes, F.F.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2000, DOI: 10.1590/S0102-09352000000600012
Abstract: aiming at monitoring the susceptibility, increasing the control and evaluating the toxicological effects, of different concentrations of three pyrethroids were investigated in vitro against rhipicephalus sanguineus larvae using concentrations formulated for cattle, dogs and household use. a total of 1,604 15-21 day-old fasting larvae, obtained by artificial infestation in dogs, was immersed in the solutions. larvae were then maintained in bod incubators inside experimental devices, constituted by disposable petridishes, filter paper and paraffin, and observed on the stereomicroscope during a 24-hour period. the larvae have shown excitability, repetitive movements, decrease of locomotion, detachment, paralysis, knock-down and production of gases and liquid in the cuticle. mortality after 24 hours was 86.9% (1250ppm) and 100.0% (2500ppm) for permethrin; 80.3% (150ppm) and 86.0% (300ppm) for cipermethrin; and for deltamethrin 68.2% (25ppm) and 78.0% (50ppm). mortality was not observed in the control group.
Reasons for Increase in Adolescence Sexual Activities in Nigeria
F.F. Akanle
Pakistan Journal of Social Sciences , 2012,
Abstract: This study investigated the reasons for increase in adolescence sexual activities in Nigeria. The research design was a descriptive survey type. The population for the study comprised of all parents and counsellors who are married sandwich students in their undergraduate studies of the University of Ado-Ekiti and their lecturers. The sample consist of 127 students and 23 counsellors who are married parents and who had children. The research instrument was a self construct are tagged Sexuality and Parents Questionnaire (SAPQ). The questionnaires were validated using face and content validity procedures. The instrument has a reliability coefficient of 0.80. The instrument was administered by the research and 4 research assistants. The analysis of the general questions was done through the use of frequency counts and percentages while the Hypotheses were tested using chi-square. The analyses revealed that a high percentage at parents and counsellors agree that youths do not adhere to the idea of "no sex guide", that teenage sex has become a way of life and that the role which sex play in the lives of youths and the influence of social forces contribute greatly to the non adherence of "no to sex guide among youths. There was a significant difference in the reason for non adherence of youths to the idea of no sex guide, there was a significant difference in the ways suggested for curbing premarital sexual behaviour by counsellors and parents. The analyses shows that majority of the respondents claimed the provision of sexuality education can curb premarital sex while parental guidance at early age could also assist in curbing premarital sex. Based on these findings it was recommended that sexuality education should be provided on the media, at school so as to assist adolescent to make informed about sexual issues so that they can adhere to "no sex guide" on sexual behaviour until they become more matured to handle sexual issues.
HAT veertig jaar — 'n persoonlike oorsig
F.F Odendal
Lexikos , 2011, DOI: 10.5788/16--663
Abstract: Opsomming: In 2005 was dit 40 jaar sedert die verskyning van die eerste uitgawe van HAT (Verklarende Handwoordeboek van die Afrikaanse Taal), onder redakteurskap van P.C. Schoonees, C.J. Swanepoel, S.J. du Toit en C.M. Booysen. Die ontwikkeling voor hierdie publikasie en daarna van HAT 2 en 3 onder die alleenredakteurskap van F.F. Odendal en van HAT 4 en 5 onder die gesamentlike redakteurskap van Odendal en R.H. Gouws, word oorsigtelik geskets. Sleutelwoorde: HAT (VERKLARENDE HANDWOORDEBOEK VAN DIE AFRIKAANSE TAAL), WAT (WOORDEBOEK VAN DIE AFRIKAANSE TAAL) Abstract: HAT Forty Years ? A Personal Survey. In 2005 it has been 40 years since the publication of the first edition of HAT (Verklarende Handwoordeboek van die Afrikaanse Taal), then with P.C. Schoonees, C.J. Swanepoel, S.J. du Toit and C.M. Booysen as editors. The development before this publication and subsequently of HAT 2 and 3 under the sole editorship of F.F. Odendal and of HAT 4 and 5 under the combined editorship of Odendal and R.H. Gouws is synoptically sketched. Keywords: HAT (VERKLARENDE HANDWOORDEBOEK VAN DIE AFRIKAANSE TAAL), WAT (WOORDEBOEK VAN DIE AFRIKAANSE TAAL)
Atividade in vitro de permetrina, cipermetrina e deltametrina sobre larvas de Rhipicephalus sanguineus (Latreille, 1806) (Acari, Ixodidae)
Fernandes F.F.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2000,
Abstract: Investigaram-se os efeitos toxicológicos in vitro de três piretróides em diferentes concentra es, formulados para uso pecuário, domiciliar e em c es, sobre larvas de R. sanguineus, objetivando monitorar sua suscetibilidade e fomentar seu controle. Utilizaram-se 1.604 larvas em jejum, com 15 a 21 dias, obtidas por infesta o artificial em c o, imersas nas solu es testadas, contidas em dispositivos constituídos por placa de Petri descartável, papel filtro e parafina, mantidas em incubadoras do tipo BOD e observadas ao estereoscópio por 24h. Observaram-se excitabilidade, movimenta o repetitiva, diminui o da locomo o, desprendimento, paralisia, "knock-down" e prolifera o cuticular de gases e líquidos. A mortalidade na 24a hora foi de 86,9%, 100,0%, 80,3%, 86,0%, 68,2% e 78,0%, respectivamente, para permetrina 1250ppm e 2500ppm, cipermetrina 150ppm e 300ppm, e deltametrina 25ppm e 50ppm. N o houve mortalidade no grupo controle.
Toxicological effects and resistance to pyrethroids in Boophilus microplus from Goiás, Brazil
Fernandes F.F.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2001,
Abstract: In order to monitor the susceptibility of Boophilus microplus to acaricides and improve control measures, the effects of cypermethrin, deltamethrin and permethrin on larvae obtained in the city of Goiania in the Brazilian state of Goiás were studied. Although these pyrethroids are already sold as acaricides, their cost-benefit efficiency has been questioned. Fasting 14-21 day-old larvae were immersed in solutions of the acaricides under test, maintained at 27±1° C, and relative humidity over 80%, and observed under the stereoscope within an apparatus originally designed for studying the non-parasitic phase of the tick life cycle. The observed toxicological effects were: excitability, repetitive motion, decreased motor ability, detachment, paralysis, knock-down and cuticular proliferation of liquids and gases. The materials used in the manufacture of this apparatus consisted of disposable Petri dishes, "organza" cloth and paraffin, none of which are toxic to tick larvae. Mean death rates after 24h were 76.3%, 87.5%, 77.6%, 91.2%, 86.2% and 100% for 25 and 50ppm deltamethrin, 150 and 300ppm cypermethrin and 1250 and 2500ppm permethrin, respectively. The ticks were resistant to commercial concentrations of deltamethrin and cypermethrin. Only 2500ppm permethrin produced the mortality recommended by the Brazilian Ministry of Agriculture.
Constituintes voláteis de Mentha pulegium L. e Plectranthus amboinicus (Lour.) Spreng
Oliveira, R.A;Sá, I.C.G;Duarte, L.P;Oliveira, F.F;
Revista Brasileira de Plantas Medicinais , 2011, DOI: 10.1590/S1516-05722011000200007
Abstract: this work investigated the chemical composition of the essential oils of two medicinal plants grown in ilhéus municipality, bahia state, brazil: plectranthus amboinicus (lour.) spreng (mexican mint) and mentha pulegium l. (pennyroyal). the essential oils were extracted from fresh leaves by hydrodistillation and analyzed by gc-fid and gc-ms, in the spring and in the winter. in both seasons, p. amboinicus yielded 0.10% oil and had thymol as major component. m. pulegium yielded 0.20% and 0.09% oil in the spring and winter, respectively. the major components were pulegone and trans-caryophyllene, whereas borneol, menthol and piperitone were identified at small quantities. higher menthol and isomenthol levels were detected in the winter. in addition, neoisomenthyl, menthyl and isomenthyl acetates were only observed in the winter. this work contributes to the knowledge of plant species grown in southern bahia
Utiliza??o de fenbendazole e da associa??o febantel, pamoato de pirantel e praziquantel no controle de oxiurídeos em gerbis
Machado, H.H.S.;Gomes, F.F.;Fiuza, V.R.S.;Toledo, R.S.;de Oliveira, F. C.R.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2007, DOI: 10.1590/S0102-09352007000100045
Abstract: eighteen jirds were equally distributed in two treated and one control groups. the commercial products to the fenbendazole base (10mg) and the association of febantel (1.5mg), pirantel (1.44mg) and praziquantel (0.5mg) were orally administred in the concentration of 0.1ml in each group. the effectiveness of febendazole against oxiurids was 81.8%, 65.0 and 38.7% and for the association of febantel, pirantel and praziquantel was 72.7%, 73.8% and 51.0% on days 7, 14 and 21, respectively. three applications of that dose of the tested medications, within intervals of 10 days, associated to hygiene, are recommended.
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