Concatenated
Mostrando 13-24 de 83 artigos, teses e dissertações.
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13. Generation of diversity in Streptococcus mutans genes demonstrated by MLST
Streptococcus mutans, consisting of serotypes c, e, f and k, is an oral aciduric organism associated with the initiation and progression of dental caries. A total of 135 independent Streptococcus mutans strains from caries-free and caries-active subjects isolated from various geographical locations were examined in two versions of an MLST scheme consisting o
Publicado em: 2010
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14. Phenotypic, genetic and bioactivity analyses of Brazilian cyanobacterial isolates from the genera Fischerella and Hapalosiphon / Análise fenotípica, genética e de bioatividade de isolados brasileiros de cianobactérias dos gêneros Fischerella e Hapalosiphon
A afiliação genérica de Fischerella e Hapalosiphon é problemática devido à instabilidade dos caracteres morfológicos. Os gêneros Fischerella e Hapalosiphon são diferenciados pela presença de tricoma multisseriado e uni ou bisseriado, respectivamente. Porém, geneticamente esses caracteres não se mostraram diacríticos para diferenciar gêneros. Es
Publicado em: 2009
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15. Evolução do reparo por excisão de nucleotídeo
The phylogeny is one of the main activities of the modern taxonomists and a way to reconstruct the history of the life through comparative analysis of these sequences stored in their genomes aimed find any justification for the origin or evolution of them. Among the sequences with a high level of conservation are the genes of repair because it is important f
Publicado em: 2008
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16. Molecular evolution of the mitochondrial genome of the family Calliphoridae (Diptera: Brachycera) / Evolução molecular do genoma mitocondrial da familia Calliphoridae (Diptera: Brachycera)
In this study, we present the complete mitochondrial DNA (mtDNA) sequence of three Calliphoridae (Diptera: Brachycera) species: Chloroprocta idioidea, Calliphora vomitoria and Phormia regina, which had 15004, 16143 and 16635 bp, respectively. Each genome was arranged in the same order described for insects and crustaceans, containing 13 protein coding genes
Publicado em: 2008
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17. The city of São Paulo from 1870 to 1930: coffee, immigrants, railroads and industry. / A cidade de São Paulo de 1870 a 1930: café, imigrantes, ferrovia, indústria.
This study approaches the processes of São Paulo urban evolution from 1870 to 1930, since its initial phase as villa until the city that later became into the current metropolis. For this, it analyzes in a concatenated manner, formulating casual connections, about the importance of coffee culture; the deployment and development of the railroads, decisive fo
Publicado em: 2007
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18. A phylogenomic appraisal of the evolutionary relationship of mycoplasmas
Several genomes of mycoplasmas have been sequenced and here we tried to retrieve the evolutionary relationships of nine species using a phylogenomic approach. Several methods were used to build phylogenetic trees based on protein sequence information, gene-order, and gene-content. We also utilized datasets composed of individual and concatenated sets of orth
Genetics and Molecular Biology. Publicado em: 2007
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19. Projeto e analise de receptores iterativos atraves de funções EXIT / Design and analysis of iteativers using EXIT charts
Durante a última década foram desenvolvidas novas ferramentas para o projeto e análise da decodificação iterativa de códigos concatenados. Duas destas ferramentas são: o algoritmo de evolução de densidades de probabilidade (conhecido em inglês como density evolution) e as funções EXIT (do inglês, Extrinsic Information Transfer Functions). As cur
Publicado em: 2007
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20. New proposals for optmization of digital TV receivers based on OFDM in regional single frequency network environments / Novas propostas para otimização de receptores de TV digital baseados em OFDM em ambientes de redes de frequencia unica regionais
This thesis deals with the optimization of Digital TV receivers based on OFDM, with performance evaluation in regional single frequency networks (SFN). Such environment facilitates the channel distribution, however its characteristics degrade the receiver operation. Initially, projects of loop canceller filters in relay stations are treated, and they are nec
Publicado em: 2007
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21. Codificadores bit-geometricamente uniformes para sistemas com concatenação serial / Bit-geometrically uniform encoders for serially concatenated systems
This thesis approaches the problem of building bit-geometrically uniform (BGU) encoders to be used as inner encoders in systems with serially concatenated codes. By using this type of encoders, certain parameters that are used to analyze the system s performance are easily determined. There is a great control over these parameters when building encoders usin
Publicado em: 2006
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22. Codigos convolucionais quanticos concatenados
Decoherence is one of the major challenges facing the field of quantum computation. The field of quantum error correction has developed to meet this challenge. A group-theoretical structure and associated class of quantum codes, the stabilizer codes, has proved particularly fruitful in producing codes and in understanding the structure of both specified code
Publicado em: 2004
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23. O problema de Cauchy para o sistema de Liu-Kubota-Ko
ln this work we consider the initial value problem for the Liu-Kubota-Ko system {Ut + auux - 1 1 (MHl) Ux - /2 (MH2) UX + /2 (NH2) VX = O Vt + bvvx -/3 (MH3) Vx -/4 (.1 vfH2) Vx + /4 (NHJ Ux = O u (x, O) - Uo E H:, s >J v (x, O) - Vo E H , s >"2 (LKK) where the symbol of the operator NH2 is n(k) = sinh_H2 and the symbol of the operator MHi is mi(k) = kcoth(k
Publicado em: 2002
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24. Codigos de linha a partir de codigos corretores de erro concatenados
This work deals with the construction of line codes based on concatenated binary error control codes, which are a combination of outer Reed-Solomon codes with inner codes that possess good properties of line coding. The inner codes were obtained by modification of known error correcting codes (block and convolutional) in which the number of consecutive like-
Publicado em: 2001