Preferential Attachment
Mostrando 1-12 de 47 artigos, teses e dissertações.
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1. Uma arquitetura de controle de qualidade de serviço aplicada a redes heterogêneas e serviços convergentes. / An architecture for QoS control applied to heterogeneous networks and convergent services.
One of the targets of the next generation communication systems is to provide access to any service, to any user, anytime, anywhere, regardless the access network technology or type of user device (mobile phone, PDA, personal computer, and so on). This scenario is called convergence of services by heterogeneous networks, and in such scenario quality of servi
Publicado em: 2010
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2. Contribuições ao estudo das redes complexas: modelo de qualidade
In this work we analyse the implications of using a power law distribution of vertice s quality in the growth dynamics of a network studied by Bianconi anel Barabási. In particular, we start studying the random networks which characterize or are related to some real situations, for instance the tide movement. In this context of complex networks, we investig
Publicado em: 2007
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3. Electronic structure of quantum wires by spatial charge distribution / Estrutura eletrônica de fios quânticos gerados por distribuição de carga espacial
In this work we investigate the electronic structure of space-charge quantum wires obtained via attachment of donors in misorientation steps of semiconductor vicinal surfaces. Recent experimental studies, combining epitaxial growth on GaAs (100) vicinal surfaces (terraces) with the ?-doping technique, suggests that the incorporation of Silicon donors is pref
Publicado em: 1997
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4. Comparative Behavior of Virulent Strains of Treponema pallidum and Treponema pertenue in Gradient Cultures of Various Mammalian Cells
Two strains of virulent Treponema pallidum and two of virulent T. pertenue were investigated for their ability to attach to and survive in gradient cultures of five different mammalian cells under aerobic conditions. The strains of T. pallidum studied were the high-rabbit-passage Nichols and the low-rabbit-passage KKJ. The former was known to readily attach
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5. Spontaneous IR Duplications Generated at Mitosis in ASPERGILLUS NIDULANS: Further Evidence of a Preferential Site of Transposed Attachment
A radiation-induced translocation, T(IIR → IIIL), has been shown to be nonreciprocal and to have most of IIR , including its terminus, attached uninverted to the terminus of IIIL.—Progeny with the IIR segment in duplicate, obtained from crosses of T(IIR → IIIL) to strains with a standard genome, were unstable at mitosis; like earlier duplication stra
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6. Mapping of structural and transcription-related matrix attachment sites in the alpha-globin gene domain of avian erythroblasts and erythrocytes.
The positions of preferential DNA interaction with the nuclear matrix were mapped within the domain of the chicken alpha-globin genes in transcriptionally active erythroblast nuclei and inactive nuclei of mature erythrocytes. In the latter, only two major distinct attachment sites were observed, close to the A + T-rich sequences previously found at the bound
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7. Attachment of Borrelia burgdorferi within Ixodes scapularis mediated by outer surface protein A
Borrelia burgdorferi outer surface protein (Osp) A has been used as a Lyme disease vaccine that blocks transmission: OspA antibodies of immune hosts enter ticks during blood feeding and destroy spirochetes before transmission to the host can occur. B. burgdorferi produce OspA in the gut of unfed Ixodes scapularis ticks, and many spirochetes repress OspA prod
American Society for Clinical Investigation.
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8. Species specificity of Bordetella adherence to human and animal ciliated respiratory epithelial cells.
Bacteria of the genus Bordetella adhere preferentially to ciliated respiratory epithelial cells. We investigated the specificity of this unique tropism by assessing the concentration-dependent adherence of the three Bordetella species to ciliated cells from different hosts. Bordetella pertussis and Bordetella parapertussis adhere better to human ciliated cel
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9. Inhibition of reovirus type 3 binding to host cells by sialylated glycoproteins is mediated through the viral attachment protein.
The interaction of mammalian reoviruses with sialylated glycoproteins was studied and found to be highly serotype specific in that attachment of type 3 Dearing reovirus to murine L cell receptors could be strongly inhibited by bovine submaxillary mucin (BSM), fetuin, and alpha 1 acid glycoprotein, albeit at different efficiencies, whereas attachment of type
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10. A Single Amino Acid in the Adenovirus Type 37 Fiber Confers Binding to Human Conjunctival Cells†
A 46-kDa receptor, coxsackievirus-adenovirus (Ad) receptor (CAR), mediates cell attachment of a number of different Ad serotypes; however, not all Ad serotypes utilize this receptor for infection. Moreover, the precise amino acid sequences in the Ad fiber protein that mediate cell attachment have yet to be identified. We investigated the interaction of subgr
American Society for Microbiology.
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11. Attachment of Chloroplast Polysomes to Thylakoid Membranes in Chlamydomonas reinhardtii
Treatment of synchronous cultures of Chlamydomonas reinhardtii with chloramphenicol at 4 hr after the beginning of the light phase led to a preferential loss of 70S ribosomes from the 17,000 × gmax supernate. The “lost” 70S ribosomes were found associated with a thylakoid membrane fraction prepared from the 17,000 × gmax pellet. Electron microscopic ex
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12. Attachment of Escherichia coli O157:H7 to the Surfaces and Internal Structures of Apples as Detected by Confocal Scanning Laser Microscopy
Confocal scanning laser microscopy (CSLM) was used to demonstrate the attachment of Escherichia coli O157:H7 transformed with a plasmid encoding for green fluorescent protein (GFP) to the surface and within the internal structures of nonwaxed Red Delicious cv. apples. Apples at 2 or 25°C were inoculated with an E. coli O157:H7 cell suspension at 2 or 25°C.
American Society for Microbiology.