OBJECTIVE To assess the relationship between crack cocaine use and dimensions of quality of life and social functioning in young adults. METHODS This was a cross-sectional, population-based study involving 1,560 participants in Pelotas, Brazil. Crack cocaine use and abuse were investigated using the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) inventory. Outcomes of inte...

In this paper, the steady-state and transient heat transfer processes of functionally graded materials (FGMs) are analyzed using a coupled thermo-mechanical model in GPU parallel multiphysics finite–discrete element software, namely MultiFracS. First, to handle problem heterogeneous is verified. Then, advantages disadvantages FGMs composite response thermal shock loads compared results indicate...

This study numerically predicts the failure scenario of a cracked concrete gravity dam through a push-over nonlinear analysis. The mixed-mode Linear Elastic Fracture Mechanics (LEFM) was employed using the extended finite element method (XFEM). The dam base was considered to be fully fixed without any foundation effects. The hydrostatic pressure on the dam's upstream face was increased incremen...

Nowadays modification of metallic biomaterials which are used as implants for bone and hard tissues replacement is considered as an important subject. In the current study, corrosion fatigue properties of Ti-6Al-4V alloy investigated via Rotating-Bending standard test method and then, the results compared with the fatigue properties of the specimens tested in the same conditions. Scanning elect...

OBJECTIVE To determine deformity correction by postural correction and subsequent balloon inflation in acute vertebral compression fractures (OVCFs) and to examine the effect of bone mineral density on deformity correction. METHODS A totol of 50 acute OVCFs received balloon kyphoplasty. Lateral radiographs were taken and analyzed at five different time points : 1) preoperative, 2) after placi...

To investigate the effect of crack angle on fracture performance brittle materials under tensile load, a molecular dynamics simulation method based ReaxFF is used to establish an amorphous silica model through high-temperature melting and annealing process. Under environment 300 K, 1.013 × 105 Pa 5 109 s−1, impact from three perspectives analyzed: material mechanical properties, micro process, ...