Arc Based
Mostrando 25-36 de 145 artigos, teses e dissertações.
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25. Effects of the application techniques of self-adhesive resin cements on the interfacial integrity and bond strength of fiber posts to dentin
ABSTRACT Objective: To evaluate the influence of an application technique of a glass-fiber post using self-adhesive resin cements on the push-out bond strength and the presence of bubbles in the root thirds. The cements were either applied according to the manufacturer's instruction or using a commercial delivering system (Centrix), at which the cement past
J. Appl. Oral Sci.. Publicado em: 2016-10
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26. Control of the Microhardness to Young Modulus Ratio by Mechanical Processing of a Ti-10Mo-20Nb Alloy
β-metastable titanium alloys with high strength to Young’s modulus ratio have been developed by different authors aiming their use as biomaterials for hard tissue replacement. However, it is not easy to combine low elastic modulus with high mechanical strength. In this work, a β-Ti alloy (Ti-10Mo-20Nb) was produced by arc-melting, then homogenized, cold
Mat. Res.. Publicado em: 23/10/2015
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27. First report of brown widow spider sightings in Peninsular Malaysia and notes on its global distribution
Abstract Background: The brown widow spider (
Latrodectus geometricus Koch, 1841) has colonised many parts of the world from its continent of origin, Africa. By at least 1841, the species had successfully established populations in South America and has more recently expanded its range to the southern stateJ. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 11/08/2015
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28. Dynamic crushing of uniform and density graded cellular structures based on the circle arc model
AbstractA new circle-arc model was established to present the cellular structure. Dynamic response of models with density gradients under constant velocities is investigated by employing Ls-dyna 971. Compared with the uniform models, the quasi-static plateau stress of different layers seems a significant parameter correlated with the deformation mode except
Lat. Am. j. solids struct.. Publicado em: 2015-06
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29. Analysis of expansions of a bus transit network considering the needs identified by the community: case study
Abstract Expansion analyses are performed on a bus transit network in the City of Laramie area in Wyoming. Expansion analysis is based on the needs identified by the bus transportation agency and the community. This paper examines the expansions, operations and sustainability of a bus transit in a small city having a population of 30,000 people. When funding
J. Transp. Lit.. Publicado em: 2015-04
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30. Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution
The H2S corrosion resistance of API 5L X80 steel and its welded joint (WJ) were evaluated using the weight loss method in a 5%wt brine solution and different corrosive environments based on a sodium thiosulphate solution (10–3 and 10–2 mol/l). The weight loss method, scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) were applied to
Mat. Res.. Publicado em: 2015-04
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31. Improving adhesion between luting cement and zirconia-based ceramic with an alternative surface treatment
This study evaluated the influence of an alternative surface treatment on the microshear bond strength (μsbs) of zirconia-based ceramic. Thirty-five zirconia disks were assigned to five groups according to the following treatments: Control (CO), glass and silane were not applied to the zirconia surface; G1, air blasted with 100μm glass beads + glaze + sila
Braz. oral res.. Publicado em: 31/03/2015
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32. Effect of Continuous and Pulsed Current on the Metallurgical and Mechanical Properties of Gas Tungsten Arc Welded AISI 4340 Aeronautical and AISI 304 L Austenitic Stainless Steel Dissimilar Joints
In this research work, the weldability of low alloyed AISI 4340 aeronautical steel and AISI 304L austenitic stainless steel joined by continuous current (CC) and pulsed current (PC) gas tungsten arc welding (GTAW) techniques, using ER309L and ERNiCr-3 filler metals was investigated. The main focus of the study involves the investigation on the effect of cont
Mat. Res.. Publicado em: 2015-02
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33. Efecto de los parámetros de soldadura sobre la microestructura de recargues nanoestructurados base hierro depositados por FCAW-S
Lately modern hardfacing tubular wires for semiautomatic welding with gas protection and without it have been developed. These wires deposit Fe-based nanostructured alloys with high abrasive wear resistance. The information on these new consumables is scarce, especially about the effect that the welding parameters (heat input, shielding gas, arc voltage, cur
Soldag. insp.. Publicado em: 2014-12
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34. A crop model-based approach for sunflower yields
Pushed by the Brazilian biodiesel policy, sunflower (Helianthus annuus L.) production is becoming increasingly regarded as an option to boost farmers' income, particularly under semi-arid conditions. Biodiesel related opportunities increase the demand for decision-making information at different levels, which could be met by simulation models. This study aim
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-10
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35. Bioclimatic distribution and prevalence maps for Fasciola hepatica in Espírito Santo State, Brazil
Background Fasciolosis affects different ruminant species and leads to great economic losses for cattle farmers worldwide. Thus, the current study aimed to evaluate bovine fasciolosis prevalence in the state of Espírito Santo, Brazil, using slaughter maps provided by slaughterhouses and verifying the origin of cattle. Methods : A map was created based o
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 02/09/2014
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36. Valoraciones empírico-teóricas sobre los métodos de evaluación de la transferencia de carga eléctrica en la soldadura con electrodo revestido
The present work is based on an assessment of experimentally obtained results from the application of different methods of evaluation, reported in the specialized literature, of the electrical charge transference stability in the arc. A simple factorial design, taking the welding current as independent variable, was applied to the process with an AWS A5.1 E6
Soldag. insp.. Publicado em: 2014-09