Curved Bridges
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. A Very Rare Combination: two Scimitar Veins and a Myocardial Bridge
Abstract Scimitar syndrome is a rare congenital anomaly characterized by partial or complete anomalous pulmonary venous drainage of the right (rarely left) lung into the inferior vena cava. This anomalous vein resembles the curved Turkish sword “scimitar”[1]. Only few cases were reported with two scimitar veins[2]. “Myocardial bridge” constitutes a p
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-04
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2. 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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3. Sensitivity analysis of bridge-track-train system to parameters of railway
Generally, Railway bridges are long structures which have different responses against different loads of train. Applied loads of train on railroad bridges are different in terms of axle loads speed, and annual passed tonnages and they have quite different dynamic behavior in comparison with road bridges. Most researches are basically focused on the quasi-sta
Lat. Am. j. solids struct.. Publicado em: 2014-08
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4. Protensão em pontes celulares curvas. / Prestressing of curved box-girder bridges.
This work compares the results from a practical and simplified method and the Finite Element Method to determinate section efforts in prestressed box-girder curved bridges. The first part, theoretical, introduces the basic principles of the cellular curved beams, showing the differences of its behavior comparing with straight beams. Next, prestressing of con
Publicado em: 2001
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5. Bacillus subtilis LrpC is a sequence-independent DNA-binding and DNA-bending protein which bridges DNA
Genetic evidence suggests that the Bacillus subtilis lrpC gene product participates in cell growth and sporulation. The purified LrpC protein, which has a predicted molecular mass of 16.4 kDa, is a tetramer in solution. LrpC binds with higher affinity (Kapp ~ 80 nM) to intrinsically curved DNA than to non-curved DNA (Kapp ~ 700 nM). DNase I footprinting and
Oxford University Press.
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6. Force-velocity relation for frog muscle fibres: effects of moderate fatigue and of intracellular acidification.
1. Intact frog single fibres were investigated under control conditions (1 s tetanus every 2, 3 or 5 min) and during moderate fatigue (interval between tetani 15 or 30 s). 2. Fatigue reduced isometric force (P0) by 25.8 +/- 1.6% (S.E.M.; n = 13) and depressed the maximum velocity of shortening (Vmax) by 10.2 +/- 2.2% (n = 13). The force-velocity relation bec
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7. The stiffness of frog skinned muscle fibres at altered lateral filament spacing.
When the surface membrane is removed from a frog muscle fibre the myofibrils swell, so that the spacing between the filaments increases by 10-30%. In this study, the stiffness of skinned fibres was measured when the lateral spacing of the filament lattice was reduced osmotically using polyvinyl pyrrolidone (PVP), a synthetic linear polymer. In the absence of
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8. Structure of the actin-myosin complex in the presence of ATP.
The structure of the complex between actin and myosin subfragment 1 (S1), designated the acto-S1 complex, in the presence of ATP was examined by electron microscopy. This was accomplished by using negative staining to study a complex of S1 covalently crosslinked to actin by the zero-length crosslinker, 1-ethyl-3-[3-(dimethylamino)-propyl]carbodiimide. Two le