Mttf
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Estudo sobre modelagem e avaliação de confiabilidade em redes óticas / Study on reliability modeling and evaluation of optical networks
Nos dias de hoje, as redes de comunicação têm se mostrado cada vez mais vitais e importantes, pois provêm conexões locais, regionais e internacionais para voz, dados e vídeo. Num mundo globalizado, elas desempenham um papel importante na economia e nas relações humanas, de tal maneira que a sua indisponibilidade, ainda que por pouco tempo, pode causa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/06/2010
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2. Aplicação de técnicas de otimização à engenharia de confiabilidade
O presente trabalho busca apresentar de forma sucinta as técnicas tradicionais de modelagem e an´alise de confiabilidade e mantenabilidade para sistemas reparáveis e não-reparáveis. Técnicas de Inteligência Computacional são também sucintamente analisadas e suas aplicações mais recentes à engenharia de confiabilidade são relacionadas. Em termos
Publicado em: 2008
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3. Analysis and synthesis of multiplexed systems: an approach of reliability and operational maintainability. / Análise e síntese de sistemas multiplexados: uma abordagem de confiabilidade e manutenabilidade operacional.
The work presented under the heading "Analysis and Synthesis of Multiplexed Systems: An Approach of Reliability and Operational Maintainability" has as objective to consider a practical model for the maintenance, based on the reliability and maintainability of components. The data of this work had been gotten through management reports of the Company of Tele
Publicado em: 2007
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4. Metodologia para implementação do modelo Markoviano em analise confiabilistica de sistemas
Em uma economia globalizada e competitiva, com regras modernas de segurança, leis ambientais e de responsabilidade, o avanço da tecnologia permite o desenvolvimento de equipamentos e sistemas cada vez mais complexos, capazes de satisfazer as exigências impostas e competir com os concorrentes existentes no mercado, sendo um dos parâmetros de diferença, a
Publicado em: 2002
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5. Purification and characterization of human mitochondrial transcription factor 1.
We purified to near homogeneity a transcription factor from human KB cell mitochondria. This factor, designated mitochondrial transcription factor 1 (mtTF1), is required for the in vitro recognition of both major promoters of human mitochondrial DNA by the homologous mitochondrial RNA polymerase. Furthermore, it has been shown to bind upstream regulatory ele
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6. Assignment of a yeast protein necessary for mitochondrial transcription initiation.
Yeast mitochondrial DNA contains multiple promoters that are responsible for expression of its genes. The basic yeast mitochondrial promoter consists of a nonanucleotide consensus sequence [5'-ATATAAGTA(+1)-3'] that must be recognized by transcription proteins, including mitochondrial RNA polymerase and any relevant trans-acting factors. Since mitochondrial
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7. Cholesterol side-chain cleavage in the rat adrenal cortex: isolation of a cycloheximide-sensitive activator peptide.
A cytosolic peptide activator (Mr approximately equal to 2,200) of cholesterol side-chain cleavage in the adrenal cortex has been isolated from normal corticotropin-treated rats and from rats implanted with the MtT/F4 corticotropin-secreting pituitary tumor. The isolation techniques were those common to peptide hormone purification, including tissue extracti
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8. Replication-competent human mitochondrial DNA lacking the heavy-strand promoter region.
We identified two patients with progressive external ophthalmoplegia, a mitochondrial disease, who harbored a population of partially deleted mitochondrial DNA (mtDNA) with unusual properties. These molecules were deleted from mtDNA positions 548 to 4,442 and encompassed not only rRNA sequences but the heavy-strand promoter region as well. A 13-bp direct rep
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9. Ancestry and diversity of the HMG box superfamily.
The HMG box is a novel type of DNA-binding domain found in a diverse group of proteins. The HMG box superfamily comprises a.o. the High Mobility Group proteins HMG1 and HMG2, the nucleolar transcription factor UBF, the lymphoid transcription factors TCF-1 and LEF-1, the fungal mating-type genes mat-Mc and MATA1, and the mammalian sex-determining gene SRY. Th
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10. The HMG-1 box protein family: classification and functional relationships.
The abundant and highly-conserved nucleoproteins comprising the high mobility group-1/2 (HMG-1/2) family contains two homologous basic domains of about 75 amino acids. These basic domains, termed HMG-1 boxes, are highly structured and facilitate HMG-DNA interactions. Many proteins that regulate various cellular functions involving DNA binding and whose targe