Cyclic Extension
Mostrando 1-12 de 60 artigos, teses e dissertações.
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1. An Anchorage System for Enhanced Bond Behavior between Carbon Fiber Reinforced Polymer Sheets and Cracked Concrete
Abstract The contribution of CFRP wraps, as an anchorage system, to enhancing bond behavior between CFRP sheet and cracked concrete, was investigated. Thirty six concrete blocks (150 x 150 x 200 mm) were cast with 3ϕ12 mm steel bars embedded laterally at different spacing along the 200-mm-dimension. Half of the moist-cured blocks were subjected to a cyclic
Lat. Am. j. solids struct.. Publicado em: 05/09/2019
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2. A Two-Surface Viscoplastic Model for the Structural Steel
Abstract As extension of the previous two-surface model in plasticity, a two-surface model for viscoplasticity is presented herein. In order to validate and investigate the performance of the proposed model, several numerical simulations are undertaken especially for structural steel under monotonic and cyclic loading cases, where experimental results and nu
Lat. Am. j. solids struct.. Publicado em: 2017-06
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3. Oxocarbonos, pseudo-oxocarbonos e esquaraínas
Oxocarbons ions are cyclic compounds presenting unusual electronic and vibrational properties. These molecules anions possess a high symmetry and degree of electronic delocalization, characteristics that have been discussed in several structural and spectroscopic investigations. Compounds in which one or more of the carbonyl oxygen atoms are replaced by othe
Química Nova. Publicado em: 2009
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4. Sobre bases normais para extensões galoisianas de corpos / On normal bases for galoisian extensions of fields
Neste trabalho apresentamos várias demonstrações do Teorema da Base Normal para certos tipos de extensões galoisianas de corpos, algumas existenciais e outras construtivas, destacando as diferenças e dificuldades de cada situação. Apresentamos também generalizações de tal teorema e mostramos que toda extensão galoisiana de grau ímpar de corpos ad
Publicado em: 2008
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5. Actions of groups on sphere product, cohomology of virtually cyclic groups (ZaX| Zb)X| Z and [ZaX|(ZbXQ2i)]X|Z and Tate Cohomology / Ações de p-grupos sobre produto de esferas, co-homologia dos grupos virtualmente cíclicos (Z IND.aX| Z IND. b)X| Z e [Z IND.aX| (Z IND.bX Q IND.2 POT. i)] X| Z e cohomologia de Tate
In this work is studied the rank of the fixed point set of a semifree action on spaces X~p S POT.nX S POT.nand X~p S POT.nX S POT.nX S POT.n, with n>0. We also consider the extension of the result for actions of p-groups on spaces X~p SPOT.nX S POT.m, with 0
Publicado em: 2008
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6. Codigos ciclicos sobre aneis locais e suas relações com a transformada discreta de Fourier / Cyclics codes on local rings and its relations with the discrete transformed of Fourier
In this research we present some existing relationships between cyclic codes and discrete Fourier transform both local rings. For this, it is necessary to identify the groups of unit associated with each corresponding local ring. As a consequence, cyclic codes over these rings may be constructed. Next, we construct sequence generators by use of linear feedba
Publicado em: 2007
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7. Representação Matemática do Comportamento Mecânico Cíclico de Solos Saturados e não Saturados / Mathematical Representation of the Cyclic Mechanical Behaviour of Saturated and Unsaturated Soils
Granular materials, such as soils, exhibit a relatively complex mechanical behaviour. Usually, the mechanical behaviour of soils is studied with the aid of the Continuum Mechanics. Materials under cyclic loadings exhibit a dierent mechanical behaviour, with respect to monotonic loadings. The mathematical theory of elastoplasticity has been employed to the nu
Publicado em: 2006
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8. Ultrasound-guided intra-uterine injection technique for embryo transfer in mares / Técnica ultra-sonográfica de injeção intra-uterina para transferência de embriões em eqüinos
Embryo transfer (ET) in mares has been performed by transcervical or surgical methods. Pregnancy rates resulting from the transcervical method are more variable; however this is the more routine ET technique used nowadays. The surgical method has resulted in higher and less variable pregnancy rates. Although, this technique is much more invasive than the tra
Publicado em: 2003
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9. Uma contribuição a classe dos codigos geometricamente uniformes
In this research we present extensions oí code constructions whose codes belong to the class oí geometrically uniíorm codes. We consider two characterizations oí signal sets matched to groups. The first characterization is derived írom a noncommutative group which is the semidirect product oí a commutative group by a cyclic group oí even order. The se
Publicado em: 1996
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10. Effects of putative modulators of relaxation microinjected into intact amphibian smooth muscle cells.
1. Single smooth muscle cells were isolated intact from the stomach of the toad Bufo marinus. The relaxation of cells following cessation of electrical stimulation was compared with those relaxed by pressure microinjection of either metal ion chelators or cyclic nucleotides. 2. Injection of either a Ca2+ chelator or 3',5'-cyclic AMP slowed or halted shorteni
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11. Cyclic birefringence changes in pseudopods of Chaos carolinensis revealing the localization of the motive force in pseudopod extension.
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12. Positive and negative control of ompB transcription in Escherichia coli by cyclic AMP and the cyclic AMP receptor protein.
The ompB operon encodes OmpR and EnvZ, two proteins that are necessary for the expression and osmoregulation of the OmpF and OmpC porins in Escherichia coli. We have used in vitro and in vivo experiments to show that cyclic AMP and the cyclic AMP receptor protein (CRP) directly regulate ompB. ompB expression in an ompB-lacZ chromosomal fusion strain was incr