Variable Length Chains
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Algoritmos de estimação para Cadeias de Markov de alcance variavel : aplicações a detecção do ritmo em textos escritos / Estimation of algorithms for variable length Markov chains : applications in the detection of rhythm in written texts
No presente trabalho, direcionamos nossos estudos à questão de se encontrar evidências estatísticas na detecção de ritmos em textos escritos, apresentando para isso ferramentas probabilísticas que nos permitam discriminar textos brasileiros e portugueses. Para alcançarmos tais objetivos, abordamos alguns resultados teóricos e práticos em modelagem,
Publicado em: 2008
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2. Um esquema regenerativo visível em cadeias de alcance variável não limitada / A visible regenerative scheme in unbounded variable length chains
Our main aim is prove the existence of a regeneration scheme in unbounded variable length chains. We present an algorithm to identify sequences of regeneration times which converges almost surely as the sample length.
Publicado em: 2007
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3. AnÃlise de sensibilidade do modelo fluidodinÃmico de um Riser atravÃs do formalismo diferencial perturbativo / Sensitivity analysis for a fluid-dynamic model of a riser via the differential pertubation method
In an oil refinery, the crude oil is pre-heated in order to promote the cracking of the large hydrocarbon chains, transforming the heavy oil into lighter components. These lighter and vaporized oil (gas oil) is now submitted to a fluid catalyst cracking inside a long column denominated riser, where an ascending mixture of gas oil and solid catalyst are simul
Publicado em: 2007
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4. Attachment of protein affinity-labeling reagents of variable length and amino acid specificity to E. coli tRNAfMet.
Transamination with bifunctional amines in the presence of bisulfite has been used to attach side chains of variable length to the N4-position of single stranded cytidine residues in E. coli tRNAfMet. Such side chains, terminating in reactive primary amino groups, have been coupled to a variety of N-hydroxysuccinimide esters. The resulting modified tRNAs car
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5. Organization of the diversity--joining region in rabbit immunoglobulin heavy chains as revealed by cleavage of a specific methionine residue in a100 allotype.
Three anti-micrococcus antibodies of restricted heterogeneity have been isolated from the antisera of homozygous a100/a100 rabbits. Heavy chains contained an unusual methionine residue at position 87 that may correlate with the a100 specificity. From this position, the sequence of a stretch of 35-50 amino acid residues was determined, permitting the definiti
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6. Structural and functional division into two domains of the large (100- to 115-kDa) chains of the clathrin-associated protein complex AP-2.
The clathrin-associated protein complex 2 (AP-2 complex) is a group of proteins associated with clathrin-coated vesicles and believed to interact with cytoplasmic domains of receptors found in the plasma membrane. AP-2 was purified as an assembly of several polypeptide chains (alpha, beta, AP50, and AP17), of which only the alpha and beta chains (100-115 kDa
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7. Structure and multiplicity of genes for the human immunoglobulin heavy chain variable region.
Several genes for the variable region of immunoglobulin heavy chains (VH genes) have been isolated from human fetal liver DNA by using a cDNA plasmid probe containing a mouse VH sequence. The detectable VH genes are separated by 12-16 kilobases of DNA, and hybridization experiments show about 23 hybridizing VH genes in DNA of three different individuals. The
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8. THE COVALENT STRUCTURE OF AN ENTIRE γG IMMUNOGLOBULIN MOLECULE*
The complete amino acid sequence of a human γG1 immunoglobulin (Eu) has been determined and the arrangement of all of the disulfide bonds has been established. Comparison of the sequence with that of another myeloma protein (He) suggests that the variable regions of heavy and light chains are homologous and similar in length. The constant portion of the hea
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9. Complete sequence of a cDNA clone specifying sandbar shark immunoglobulin light chain: gene organization and implications for the evolution of light chains.
A full-length cDNA clone specifying sandbar shark (Carcharhinus plumbeus) immunoglobulin light chain has been isolated and sequenced. By alignment with human lambda chains, the leader, framework, complementarity-determining, joining, and constant regions are clearly identified in the shark light chain. Approximately 40-50% identity is shared between the huma
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10. Identification of a putative yeast homolog of the mammalian beta chains of the clathrin-associated protein complexes.
The clathrin-associated protein complexes are heterotetrameric structures believed to interact with clathrin and with membrane components of mammalian coated pits and coated vesicles. I have identified a yeast homolog of the mammalian beta-type large chains, suggesting the existence in yeast cells of clathrin-associated protein complexes. A sequence comparis
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11. Coexpression of mu and gamma 1 heavy chains can occur by a discontinuous transcription mechanism from the same unrearranged chromosome.
We previously documented that a single BCL1 leukemia cell can produce mu and gamma 1 immunoglobulin heavy chains with identical variable segments in an allelically excluded fashion without heavy chain constant region gene rearrangement. To understand the mechanism of dual mu/gamma 1 synthesis in BCL1 subclones, we have analyzed mature and pre-RNA at the nasc
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12. Mechanisms of antibody diversity: Multiple genes encode structurally related mouse κ variable regions
The complete amino acid sequences of the variable regions of three mouse Vκ-21 kappa chains (A22, T111, and CB101) and one partial sequence (B32) have been determined and are compared to four previously reported Vκ-21 variable regions. These eight κ variable region sequences have, with the exception of an amide difference at residue 1, identical amino-ter