The present study aimed to assess the influence of curing distance on the loss of irradiance and power density of four curing light devices. The behavior in terms of power density of four different dental curing devices was analyzed (Valo, Elipar 2, Radii-Cal, and Optilux-401) using three different distances of photopolymerization (0 mm, 4 mm, and 8 mm). All devices had their power density meas...

Three modular multiplication algorithms are described and compared: the so-called Multiply and Reduce, the Shift and Add, and finally, the Montgomery product. An estimation of the cost of their combinational implementation using Xilinx FPGAs family is calculated. Practical results in term of area, delay, and power for both combinational and completely sequential implementations are presented.

In this paper, we consider the problems of identiication of delay-fault-sensitive components in a pipelined combinational circuit, and of circuit modiication to improve the circuit's tolerance of delay faults. The results assume purely combinational logic, and xed gate delays calculated under oating delay mode.

In the paper an application of evolutionary algorithm to design and optimization of combinational digital circuits with respect to transistor count is presented. Multiple layer chromosomes increasing the algorithm efficiency are introduced. Four combinational circuits with truth tables chosen from literature are designed using proposed method. Obtained results are in many cases better than thos...

Reliability analysis of combinational circuits has become imperative these days due to the extensive usage of nanotechnologies in their fabrication. Traditionally, reliability analysis of combinational circuits is done using simulation or paper-and-pencil proof methods. But, these techniques do not ensure accurate results and thus may lead to disastrous consequences when dealing with safety-cri...

In one-dimensional Lie algebraic framework, we calculated the vibrational frequencies of oxygen difluoride (F2O) molecule in fundamental mode, higher overtones and their combinational bands.

PURPOSE The aim was to evaluate the effect of curing mode and different dentin surface pretreatment on microtensile bond strength (µTBS) of self-adhesive resin cements. MATERIALS AND METHODS Thirty-six extracted human permanent molars were sectioned horizontally exposing flat dentin surface. The teeth were divided into 12 groups (3 teeth/group) according to the dentin surface pretreatment met...