Bridges
Mostrando 25-36 de 936 artigos, teses e dissertações.
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25. Seismic Evaluation of Horizontally Curved Bridges Subjected to Near-Field Ground Motions
Abstract Horizontally curved bridges have more complex seismic behavior than straight bridges and have been more vulnerable to earthquakes. The present study aimed to evaluate the seismic response of concrete bridges with straight and arched box girder decks in isolated and non-isolated states. The results indicated that increasing the curvature of the non-i
Lat. Am. j. solids struct.. Publicado em: 14/03/2019
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26. Analysis of strengthening procedures of reinforced concrete highway bridges: a brazilian case study
Resumo O sistema rodoviário federal brasileiro é constituído em grande parte por pontes construídas antes de 1984. Assim, essas pontes possuem geometria e capacidade de carga incompatíveis com o tráfego atual. Nesse cenário, o objetivo deste estudo foi a avaliação dos procedimentos de alargamento e reforço empregados em uma ponte de concreto armado
Rev. IBRACON Estrut. Mater.. Publicado em: 2019-02
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27. Analysis of the brazilian federal bridge inventory
Resumo A gestão de pontes promove suporte na tomada de decisões gerenciais, otimizando as intervenções necessárias sob limitações orçamentárias. Nessa perspectiva, o Departamento Federal de Transportes (DNIT) desenvolveu o Sistema Brasileiro de Gerenciamento de Pontes (SGO) e promoveu o mais abrangente inventário de pontes rodoviárias sob sua admi
Rev. IBRACON Estrut. Mater.. Publicado em: 2019-02
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28. Integração econômica vs. evitamento social: analisando relações de bairro entre a favela de Calabar e os condomínios de elite circundantes
Resumo Esta pesquisa analisa o impacto do efeito-território nas condições de vida de trinta habitantes de Calabar, uma favela localizada em uma área de classe alta em Salvador, Bahia. Foi adotado um arcabouço metodológico tripartite para explorar as dimensões materiais, sociais e simbólicas do efeito-território com base em um conjunto de entrevistas
Rev. Bras. Estud. Urbanos Reg.. Publicado em: 01/01/2019
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29. Experimental Study of Fatigue Crack Behavior of Rib-To-Rib Butt Welded Connections in Orthotropic Steel Decks
Abstract Rib-to-rib (RR) butt welded connections are one of the most sensitive locations for encountering fatigue failure in orthotropic steel decks (OSDs), and numerous fatigue cracks arising from these areas have been identified in existing OSD bridges. Due to dynamic factors in their service life bridges with an orthotropic steel deck (OSD) are prone to f
Lat. Am. j. solids struct.. Publicado em: 11/10/2018
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30. Optimization of reinforced concrete polygonal sections under biaxial bending with axial force
Abstract Concrete is the world’s most utilized material for production of the structural elements employed in civil construction. Due to its low tensile strength and brittle nature it is reinforced with steel bars forming the reinforced concrete (RC structure). Linear elements of reinforced concrete are commonly employed in multi-story buildings, bridges,
Lat. Am. j. solids struct.. Publicado em: 04/10/2018
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31. BONEFILL ® block as alternative for bone substitute: a toxicological evaluation
ABSTRACT Bone substitutes based on hydroxyapatite (HA) and Bonefill® (BO - inorganic bovine bone) associated with poly(lactic-co-glycolic acid) (PLGA) (HA/PLGA and BO/PLGA) were evaluated concerning cytotoxicity, genotoxicity and mutagenicity as potential candidates for bone repair. The materials were developed and provided by Bionnovation Biomedical Produc
Braz. J. Pharm. Sci.. Publicado em: 26/07/2018
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32. Development of a Heavy Containment Level Bridge Rail for Istanbul
Abstract The international highways within the city limits of Istanbul are used to transit more than 15 million trucks and other heavy good vehicles per year. According to the statistics, the number of single truck run of the road accidents is in the rise. Recent accidents on bridges showed that currently used bridge rails specified by Istanbul Metropolitan
Lat. Am. j. solids struct.. Publicado em: 02/07/2018
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33. Effect of setting on the gelling properties of a protein concentrate from giant squid ( Dosidicus gigas) mantle
Abstract Different studies on obtaining protein concentrates or surimi from giant squid ( Dosidicus gigas) have reported that soft gels are obtained in comparison with other fish species. Therefore, the aim of this research was to investigate the effect of the setting (30 and 60 °C, for 0, 30, 60, and 90 min) on the gelling capacity as a possible alternati
Food Sci. Technol. Publicado em: 16/04/2018
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34. Actiflagelin, a new sperm activator isolated from Walterinnesia aegyptia venom using phenotypic screening
Abstract Background Sperm contains a wealth of cell surface receptors and ion channels that are required for most of its basic functions such as motility and acrosome reaction. Conversely, animal venoms are enriched in bioactive compounds that primarily target those ion channels and cell surface receptors. We hypothesized, therefore, that animal venoms shou
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 22/02/2018
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35. Crotalus durissus terrificus crotapotin naturally displays preferred positions for amino acid substitutions
Abstract Background Classically, Crotalus durissus terrificus (Cdt) venom can be described, according to chromatographic criteria, as a simple venom, composed of four major toxins, namely: gyroxin, crotamine, crotoxin and convulxin. Crotoxin is a non-covalent heterodimeric neurotoxin constituted of two subunits: an active phospholipase A2 and a chaperone p
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 18/12/2017
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36. ”La cadena sexo-género-revolución”
Abstract When carrying out political projects, the use of homosexual/heterosexual or trans*/cis distinctions as exclusive categories of analysis may limit the understanding of the complexity of belongings in which each subject is positioned. In many cases, including some queer approaches, this strategy provides for a simplification, which attributes a radica
Rev. Estud. Fem.. Publicado em: 2017-08