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Background The purpose of this in vitro study is to compare the antimicrobial effect and pH of two calcium silicate cements Mineral trioxide aggregate high plasticity (Angelus PR, Brazil) and iRoot BP Plus (BioCeramix Inc., Vancouver, BC, Canada) and new bioactive restorative resin composite restorative material (ACTIVA, MA, Pulpdent, USA) against aerobic bacteria, strictly anaerobic bacteria and...
Background The purpose of this study was to compare the biocompatibility of three bioactive materials, namely ACTIVA bioactive restorative resin composite, iRoot BP plus and Mineral Trioxide Aggregate (MTA) Angelus-HP. Methods Seventy-five Wistar male rats were subjected to subcutaneous implantation of four polyethylene tubes; one empty tube was used as control (Group 1), and the other tubes were...
Based on distance distribution of nucleotides in a DNA sequence, a new distance measurement, average distance of four nucleotides, was proposed. The new index can be used to describe the regularity of four nucleotides distribution in a given DNA sequence. According to the new measurement, 17 complete mammal mitochondrial genomes have been analyzed and then cluster analysis and principal component...
Electrocardiogram (ECG) indicators are widely used in driver mental workload studies. Because ECG is always recorded continuously in experiments, ECG indicator data often have trend. To make follow-up data analysis faster and more reliable, ECG indicator data should be preprocessed to remove or extract the trend according to the aim of the experiment. However, most researchers tend to ignore this...
As one part of ITS (Intelligent Transportation System), IRS (Intelligent Road System) focus on improving the road safety and operation efficiency of highway system based on the idea of cooperation between road infrastructure and vehicles. Many IRS applications such as Collision Avoidance, Automatic Lane Changing and others are principally based on the knowledge of the accurate geographical locations...
Driver fatigue is one of the main causes of traffic accidents. Many researchers believe that electroencephalography is very accurate and promising to detect driving fatigue, but so far, the research results have been variable. Through simulation experiments, this paper found when driving at night, delta band varies significantly with the degree of fatigue. The results have implications for real-time...
This paper deals with the nonlinear feedback stabilization control problem for the dynamic model of wheeled mobile robots (WMRs) which moves in a two-dimensional space existed obstacles. By the combination of CLF and backstepping methods, a nonlinear feedback state control law is obtained. The simulation demonstrates the validity of the proposed controllers
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