a new design for replacing a missing anterior tooth is described. in this article, a lingually fixed partial denture, its advantages, disadvantages, indication and contraindications have been explained. the ability of this design to replace a single missing central or lateral incisor is discussed.

In order to calculate the vehicle load model of Baijianhe Bridge, based on data health monitoring system, type, weight, wheelbase, and other information were counted processed diagraphed obtain probability density distribution. At same time, automobile parameters relative national current code finite element method are calculated. The results show that 2-axle 6-axle vehicles main types, account...

Shortwave track diseases are generally reflected in the form of local irregularity. Such will greatly impact train–track–bridge interaction (TTBI) dynamic system, seriously affecting train safety. Therefore, a method is proposed to detect and localize irregularities based on multi-sensor time–frequency features high-speed railway bridge accelerations. Continuous wavelet transform (CWT) was used...

It is critical for the safety monitoring of highway bridges that beam bridge damage can be identified from dynamic response passing vehicles. Numerical simulations vehicles were conducted utilizing vehicle–bridge coupling vibration theory and indirect measurement method. Fast Fourier transform was performed on time history vehicle acceleration, driving frequency component its instantaneous ampl...

A generation method for the rail random irregularity with arbitrary wavelength interval (WI) is developed, and its accuracy and efficiency are demonstrated. Then a moving wheel-rail-bridge interaction element is derived to establish the finite element equations of motion for the train-rail-bridge interaction system, and the flow chart of assembly and calculation for the system equations is give...