Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 198 )

2018 ( 394 )

2017 ( 409 )

2016 ( 422 )

Custom range...

Search Results: 1 - 10 of 208256 matches for " Samuel Pereira de;Santos "
All listed articles are free for downloading (OA Articles)
Page 1 /208256
Display every page Item
Embriogênese somática direta em explantes foliares de Coffea arabica L. cv. acaiá cerrado: efeito de cinetina e ácido giberélico
Pereira, Alba Regina;Carvalho, Samuel Pereira de;Pasqual, Moacir;Santos, Flávia Carvalho;
Ciência e Agrotecnologia , 2007, DOI: 10.1590/S1413-70542007000200010
Abstract: it was aimed to study kinetin, ga3 and ana effects in the in vitro induction of direct somatics embryos. leaf segments withdrawn from plantlets in vitro were inoculated in 'ms'50% containing the following combination of kinetin (0; 1; 2; 4 and 8 mg l-1) and ga3 (0; 2,5; 5; 10 and 20 mg l-1). the culture media utilized had their ph adjusted to 5,8 ± 1 before being autoclaved. the experiment was carried out growth room at 25 ± 1oc. total number of embryos, number of embryos cotiledonar, number of embryos of torped and length of embryo were evaluated. the combination between kinetin and ga3 promoved induction of embryos. the use of kinetin 8 mg l-1 and ga3 17 mg l-1 not associate in medium with 8,0mg l-1 of ana, promoter higher rates in vitro.
Observa??es anat?micas em plantas de Coffea arabica L. obtidas por enraizamento de estacas
Jesus, Adriana Madeira Santos;Carvalho, Samuel Pereira de;Castro, Evaristo Mauro de;Gomes, Carlos Nick;
Revista Ceres , 2010, DOI: 10.1590/S0034-737X2010000200006
Abstract: f1 hybrid cloning using rooting of cuttings is a way to achieve less expensive and quicker coffea arabica improvement. cloning is still a problem in coffea arabica improvement and has been studied by different institutions to develop an efficient methodology. this work aimed to search for the presence of anatomical barriers to rooting of coffee stem cuttings and the origin of adventitious roots, comparing them with the structure of seedling tap roots. anatomical analyses of young coffee plants were carried out at the biology department of the universidade federal de lavras (ufla), lavras, mg. plants of the cultivars acaiá and ruby obtained by rooting of cuttings and seedlings were analyzed. no anatomical barriers to adventitious rooting were found in the rooted cuttings. in the cloning plants the rooting arose in close to the vascular tissues. the anatomical study of adventitious roots in the rooted cuttings and seedlings showed the same primary structures.
Caracteriza??o morfoagron?mica e coeficientes de trilha de caracteres componentes da produ??o em mandioca
Gomes, Carlos Nick;Carvalho, Samuel Pereira de;Jesus, Adriana Madeira Santos;Custódio, Telde Natel;
Pesquisa Agropecuária Brasileira , 2007, DOI: 10.1590/S0100-204X2007000800008
Abstract: the objectives of this work were to perform the agronomic characterization of 100 cassava plants (manihot esculenta crantz) and to obtain path coefficients analysis between the storage root production (basic variable) and five production components (explanative variable). the experiment was conducted at a research farm of universidade federal de lavras, minas gerais state, brazil, in square lattice (10x10), with two replications, using 100 clones and four plants per plot. statistical analyses were accomplished considering the eight characteristics individually. the scott-knott's test was used for grouping the means. clones 87 and 88 showed to be promising both to be used in crossings and to be fixed as new cultivate, due to their excellent performance in the characteristics: length, number and storage roots production per plant. path coefficient analysis demonstrates that root number per plant and aerial part weight can be used as criteria of indirect selection for storage roots production.
Impact of an Exercise Training Program in a Patient with Relapsing Polychondritis: A Case Report  [PDF]
Alexandre Moura dos Santos, Diego Sales de Oliveira, Rafael Giovani Misse, Letícia Alves Perin, Jean Marcos de Souza, Fernanda Rodrigues Lima, Rosa Maria Rodrigues Pereira, Samuel Katsuyuki Shinjo
Open Journal of Rheumatology and Autoimmune Diseases (OJRA) , 2018, DOI: 10.4236/ojra.2018.83010
Abstract: Background: Exercise training has demonstrating to be safe and promote benefits for several rheumatologic autoimmune diseases. However, no study has evaluated the safety and benefits of exercise in relapsing polychondritis. Aim: To evaluate the effectiveness of an exercise training program in a patient with relapsing polychondritis. Case presentation: A 67-year-old female patient with relapsing polychondritis in remission was submitted to a 12-week, twice weekly, aerobic and resistance training program. Aerobic capacity, muscle strength and function capacity, as well as body composition, were evaluated at baseline and after 12-weeks. Conclusions: Exercise training program demonstrated to be effective for increasing aerobic capacity, muscle strength and function, and for improving body composition in the patient. Further studies are necessary to confirm these findings.
Genetic variability among cassava accessions based on SSR markers
Ribeiro, Márcia de Nazaré Oliveira;Carvalho, Samuel Pereira de;Santos, Jo?o Bosco dos;Antonio, Rafaela Priscila;
Crop Breeding and Applied Biotechnology , 2011, DOI: 10.1590/S1984-70332011000300009
Abstract: the aim of this study was to characterize and estimate the genetic similarity among 93 cassava accessions. the dna amplification was performed with 14 microsatellite primers. the amplification products were separated by a polyacrylamide gel electrophoresis, showing a polymorphism formation, through which the accessions were discriminated against. the genetic similarity among accessions of cassava was estimated by the dice coefficient. cluster analysis was carried out using the upgma method. the polymorphic primers amplified a total of 26 alleles with 2-4 alleles per loci. the genetic similarity ranged from 0.16 to 0.96. the average values for observed and expected heterozygosity were 0.18 and 0.46, respectively. twenty genetic similarity clusters were determined, demonstrating diversity among accessions, suggesting the possibility of heterotic hybrid generation.
NOTE - Genetic variability among cassava accessions based on SSR markers
Márcia de Nazaré Oliveira Ribeiro,Samuel Pereira de Carvalho,Jo?o Bosco dos Santos,Rafaela Priscila Antonio
Crop Breeding and Applied Biotechnology , 2011,
Abstract: The aim of this study was to characterize and estimate the genetic similarity among 93 cassava accessions. The DNAamplification was performed with 14 microsatellite primers. The amplification products were separated by a polyacrylamide gelelectrophoresis, showing a polymorphism formation, through which the accessions were discriminated against. The genetic similarityamong accessions of cassava was estimated by the Dice coefficient. Cluster analysis was carried out using the UPGMA method. Thepolymorphic primers amplified a total of 26 alleles with 2-4 alleles per loci. The genetic similarity ranged from 0.16 to 0.96. Theaverage values for observed and expected heterozygosity were 0.18 and 0.46, respectively. Twenty genetic similarity clusters weredetermined, demonstrating diversity among accessions, suggesting the possibility of heterotic hybrid generation.
Avalia??o de caracteres quantitativos relacionados com o crescimento vegetativo entre cultivares de café arábica de porte baixo
Freitas, Zélia Maria Travassos Sarinho de;Oliveira, Francisco José de;Carvalho, Samuel Pereira de;Santos, Venézio Felipe dos;Santos, José Peroba de Oliveira;
Bragantia , 2007, DOI: 10.1590/S0006-87052007000200010
Abstract: the objective of this study was to verify the relationship between quantitative traits related with the vegetative growth in cultivars of short height of arabic coffee. the experiment was carried out in the experimental station of ipa (research institute of the state of pernambuco), located in the town of brej?o, during in the agricultural year of 2004/2005. the experimental design used was randomized blocks, with four replications and twelve treatments, with each replications composed by 24 plants, disposed in three arrays, with useful area formed by the central array. the spacing used was 2.0 m between rows and 1.0 m among plants. the characters were appraised through the variance analysis, estimate of the genetic determinism and the coefficients of correlations. the results detected in the population studied differences among cultivars for height of plants and length of plagiotropic branches. the cultivars topázio mg 1189, catuaí amarelo, obat? iac 1669-20 and topázio mg 1190 were better in growing at 12 months. the stem diameter is strong and positively correlated with length of plagiotropic branches for growth rate. when evaluated at 12 months, it was correlated and negative and highly with the canopy diameter and the length of plagiotropic branches was correlated negatively to number of secondary branches and positively with number of nodes of plagiotropic branches.
Correla??es genotípicas, fenotípicas e ambientais entre caracteres de mamoneira
Rodrigues, Helen Cristina de Arruda;Carvalho, Samuel Pereira de;Carvalho, Alexandre Alves de;Santos, Carlos Eduardo Magalh?es dos;Carvalho Filho, José Luiz Sandes de;
Ciência e Agrotecnologia , 2010, DOI: 10.1590/S1413-70542010000600005
Abstract: one of the great current challenges of agricultural research is the production of improved castor bean cultivars, with genetic stability, high quality and high yielding potential. the objective this work was to estimate genotypic, phenotypic and environmental correlations among traits of the castor bean plant to make the characterization of the accessions easy. they were evaluated in lavras, mg, brazil, in a randomized block design with three replicates, fifteen castor bean accessions. the traits evaluated were: plant height, stem height, number of nodes, stem diameter, final number of clusters, stand and 100-seed weight. it was observed that there was a positive phenotypic correlation of the node number and stem height, stem height and plant height, plant height and stem diameter and at last between stem diameter and 100-seed weight. there was also a positive environmental correlation among the correlations stem height and plant height, plant height and stem diameter, plant height and final stand and stem diameter and number of clusters, concluding that the estimated correlations make it possible to know the associations among the traits, giving important information to the establishment of a genetic improvement plan of castor bean from the accessions evaluated.
Divergência genética entre subamostras de mandioca
Nick, Carlos;Carvalho, Samuel Pereira de;Jesus, Adriana Madeira Santos;Custódio, Telde Natel;Marim, Bruno Garcia;Assis, Luiz Henrique Bambini de;
Bragantia , 2010, DOI: 10.1590/S0006-87052010000200005
Abstract: the objective of the present study was to estimate the genetic diversity among 75 f1 clones, 19 landraces and six commercial cultivars and to suggest on the basis of dissimilarity and the agronomic performance the accessions potential by use full as cultivars or for breeding programs. in addition this study aimed at to estimate the relative contribution of phenotypic traits for the diversity. the accessions were evaluated using seven quantitative traits related to shoot and roots production in experimental trial conducted in lavras, minas gerais state. the design was a simple lattice 10x10, in which plots of 2.4 m2, and four useful plants. the genetic diversity was expressed by the generalized mahalanobis distance, with subsequent grouping of the accessions by tocher's optimization procedure. the relative contribution of traits to the diversity based method of singh (1981). there are genetic differences between the accessions studied. the accessions 60, 61, 66 and 67 are potentially useful to participate in phases in a breeding program. the yield of shoots biomass and roots number per plant were more important for accession discrimination.
The Quality of Life for People with Parkinson’s Disease in Relation to Their Oral Health  [PDF]
Phablo Glewber T?rres Bezerra, Samuel Rodrigo de Andrade Veras, Camila Caroline da Silva, Renato Mariano da Silva, Deivison Edson Pereira da Silva, Eduardo Borges da Costa Leite, Maria das Gra?as Wanderley de Sales Coriolano, Carla Cabral dos Santos Accioly Lins
Open Journal of Stomatology (OJST) , 2018, DOI: 10.4236/ojst.2018.811029
Abstract: The present study aimed to evaluate the correlation between the oral health status and the quality of life for people with Parkinson’s disease. The Decayed, Missing, Filled (DMFT) index and the quality of life questionnaire for people with Parkinson’s disease (Parkinson’s Disease Questionnaire-39) were used as evaluation instruments. Sixty-two people with a clinical diagnosis of Parkinson’s disease between stages 1 and 3, age between 46 and 86 years, of both sexes, with an average time of disease evolution of 7 years, participated in the study. Data were evaluated using the Pearson’s correlation test, and one-way ANOVA (p < 0.05). The mean DMFT obtained was 23; there was no correlation between the DMFT values and the total score of the Parkinson’s Disease Questionnaire-39 neither in its domains, nor between the DMFT and the stages of Parkinson’s disease (p = 0.61). We found that the oral health of parkinsonians is deficient due to the high number of missing teeth, but their perception of quality of life is favorable despite their motor limitations related to mobility, and activities of daily living.
Page 1 /208256
Display every page Item

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