Received: 30 Oct 2010 Accepted: 22 Oct 2011 Abstract Background and Aim: Tooth color assessing is very important in esthetic dentistry. The aim of this article was to study tooth color prevalence of 20-30-year-old patients and also presentation of a simple method for color assessment. Materials and Methods: This cross section descriptive analytic study was performed on One thousand fifty nonsmo...

Abstract— User acceptance of technology is an important field of study in predicting the use of the computer systems. Unified Theory of Acceptance and Use of Technology (UTAUT) model is current model that has attracted the attention of researchers in predicting usage of computer systems. Individual performance and organizational performance can only increase by increasing user acceptance of com...

Breast cancer is one of the most frequently diagnosed cancers among women. Several techniques have been developed to help in the early detection of breast cancer such as conventional and digital x-ray mammography, positron and single-photon emission mammography, etc. A key advantage in digital mammography is that images can be manipulated as simple computer image files. Thus non-dedicated comme...

China has abundant crop residues (CRE) that could be used for bioenergy. The spatiotemporal characteristics of bioenergy production are crucial for high-efficiency use and appropriate management of bioenergy enterprises. In this study, statistical and remote-sensing data on crop yield in China were used to estimate CRE and to analyze its spatiotemporal changes between 1990 and 2010. In 2010, Ch...

Objective: Thoracolumbar kyphotic deformity is a common complication in the late stage of ankylosing spondylitis. The aim of this study was to compare the correction efficacy for ankylosing spondylitis kyphosis using preoperative osteotomy designs of papercut (PC)/splice and Photoshop (PS). Methods: This was a retrospective study of 35 patients with ankylosing spondylitis and thoracolumbar kyph...

Computed Tomography (CT) is a non-invasive method to give CT images of every part the human body without superimposition end-to-end structures. Some issues in measurements with are limiting too few parameters like quantum noise, beam hardening, X-ray scattering by patient, and nonlinear partial volume effects. Image processing Adobe Photoshop, ImageJ, Origin software have been used achieve good...

This topic prepared a composite nano-silver–tin slurry. According to the boiling point of dispersant, 300 °C is determined as sintering temperature. As amount tin added increases, shear strength Ag–Sn slurry gradually increases. When 1/20, reaches maximum 50 MPa. The increase in due strengthening second phase. exceeds drops sharply, mainly overgrowth Ag3Sn, product reaction silver and tin. poro...