13. INFLUENCE OF DIAMETER AND GEOMETRY IN THE TAPPING OF THE PILOT HOLE IN PEDICLE SCREWS

RESUMO Objetivo: Avaliar o torque de inserção e a força de arrancamento de cada parafuso com diferentes diâmetros e machos. Métodos: Foram utilizados no estudo blocos de poliuterano com orifício piloto de 2,7mm, sendo feito um grupo experimentais com 5 blocos sendo avaliado o torque de inserção com torquímetro e avaliado o arrancamento de cada par

Coluna/Columna. Publicado em: 2019-03

14. Ultrasonic tips as an auxiliary method for the instrumentation of oval-shaped root canals

Abstract To evaluate the influence of novel ultrasonic tips as an auxiliary method for the rotary preparation of flattened/oval-shaped canals. Forty-five mandibular incisors were selected and divided into one of three experimental groups (n = 15): Group PFCP – ProDesign Logic 25/.05 + Flatsonic + Clearsonic + Prodesign Logic 40/.01; Group FCP – Flatsonic

Braz. oral res.. Publicado em: 11/02/2019

15. Development of Improved Models for Estimation of Bursting Stresses in Elements under High-Concentrated Load

Abstract In precast concrete segmental tunnels, radial and circumferential joints are often the most highly stressed parts and it is therefore important to use appropriate equations to accurately analysed these joints during design and provide adequate structural capacity to avoid failure. Different design codes have put forward equations for the estimation

Lat. Am. j. solids struct.. Publicado em: 04/02/2019

16. Analytical study of cylindrical tanks including soil-structure interaction

Resumo Um estudo analítico voltado para o projeto de tanques cilíndricos para armazenagem de líquidos, apoiados sobre fundação deformável, é desenvolvido neste trabalho. O solo sob os tanques é modelado como um meio elástico linear. A parede cilídrica é considerada rigidamente conectada à placa de fundação. Aqui, tanques de concreto são enfati

Rev. IBRACON Estrut. Mater.. Publicado em: 2019-02

17. Numerical analysis of truss systems with stiffened flattened end-bars

Abstract Circular hollow sections are usually used in long-span roof truss systems. One of the typology for connecting elements in such structures involves the flattening of bar ends. This article presents the numerical analysis of a plane truss composed of circular hollow sections, in which diagonal bars have flattened ends. In this sense, a new flattening

Lat. Am. j. solids struct.. Publicado em: 03/05/2018

18. Free vibration analysis and design optimization of SMA/Graphite/Epoxy composite shells in thermal environments

Abstract Composite shells, which are being widely used in engineering applications, are often under thermal loads. Thermal loads usually bring thermal stresses in the structure which can significantly affect its static and dynamic behaviors. One of the possible solutions for this matter is embedding Shape Memory Alloy (SMA) wires into the structure. In the

Lat. Am. j. solids struct.. Publicado em: 23/04/2018

19. SOCIAL NETWORK ANALYSIS AND DYADIC IDENTIFICATION IN THE CLASSROOM

ABSTRACT Purpose: For this work I established as research objective the examination of antecedents (i.e., similarity of structural position, competence and sociability) and the consequences (i.e., formation of work group) of dyadic identification among students on a Business Administration course at a private University. Originality/Value: Identification h

RAM, Rev. Adm. Mackenzie. Publicado em: 05/04/2018

20. Biochemical and seminal parameters of lambs fed palm kernel cake under grazing system

ABSTRACT This study aimed to assess the effects of palm kernel cake on semen quality and biochemical parameters of Santa Inês lambs. A total of 40 animals with 24.10±2.72 kg body weight and five months old were assigned in a completely randomized design into four groups and 10 replicates. The animals were subjected to four levels of palm kernel cake (0, 15

R. Bras. Zootec.. Publicado em: 2017-08

21. A Novel Simple Convoluted Geometry to Design Frequency Selective Surfaces for Applications at ISM and UNII Bands

Abstract In this paper, we use a novel convoluted geometry to design a dual-band FSS with angular stability and independent polarization operation. The geometry allows the design of a dual-band FSS to block ISM and UNII radio bands. We performed a parametric study with the commercial software ANSYS HFSS. A prototype of our proposed FSS design was built and i

J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-04

22. Design of a Blade Antenna Embedded in Low-Cost Dielectric Substrate

Abstract A design of a blade antenna embedded in low-cost dielectric substrate (FR4) and operating at 4.97 GHz is the subject of this paper. The antenna design is accomplished using parametric analysis in the HFSS™ software, where the antenna dimensions are changed and it is observed how the changes affect figures-of-merit like input impedance, reflection

J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03

23. Finite Element Investigation of Performance of Composite-Steel Double Lap Adhesive Joint Under Tensile Loading

Abstract Parametric study of composite-steel double lap joint under tensile loading is performed using finite element modeling. The joint is such that steel is placed between a straight and a curved composite sublaminate. Three joint characteristics including maximum Von Mises stress in adhesive layer, stiffness and weight are investigated. Design curves are

Lat. Am. j. solids struct.. Publicado em: 2017-02

24. Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Abstract In this paper, weldability of magnesium alloys by friction stir welding (FSW) method which is difficult to join by the fusion welding have been investigated experimentally and numerically. To this end, the connection of magnesium alloys was performed using different welding parameters. AZ31 Mg-alloy plates were friction stir welded at rotation speed

Lat. Am. j. solids struct.. Publicado em: 2017-01