This paper presents the identification and classification of steel cord failures in conveyor belt core based on an analysis a two-dimensional image magnetic field changes recorded using Diagbelt system around scanned test belt. The obtained set identified images, for numerous parameters settings device, were base statistical analysis. makes it possible to determine Pearson’s linear correlation ...

The resistance of ProTaper (Dentsply Maillefer, Ballaigues, Switzerland) nickel-titanium rotary instruments to cyclic fatigue was examined after their initial use in straight or curved canals in vivo. These instruments were rotated freely inside a steel phantom until separation. The number of rotations before failure and the lengths of the separated fragments were compared with data derived fro...

INTRODUCTION In recent years, with the advances in counterfeiting methods, counterfeit products have reached the dental market. The purpose of this study was to compare the cyclic fatigue resistance of original and counterfeit rotary root canal instruments. MATERIALS AND METHODS The cyclic fatigue of original and counterfeit ProTaper F2 endodontic instruments was tested (n = 20) in 3 mm radiu...

Connecting rod is the intermediate link between the piston and the crank. And is responsible to transmit the push and pull from the piston pin to crank pin, thus converting the reciprocating motion of the piston to rotary motion of the crank. Generally connecting rods are manufactured using carbon steel and in recent days aluminium alloys are finding its application in connecting rod. In this w...

We report on the design of two different surface acoustic wave (SAW) driven rotary motors. Both designs use 20–30 MHz transducers patterned onto Lithium Niobate (LN), geometrically tailored to generate Rayleigh waves that are incident on opposing sides of each rotor. The first design exploits the efficient coupling between SAWs and fluids by use of a fluid coupling layer between the rotor and s...

AIM To report on a conservative approach for removal of a fractured file in the severely curved apical portion of the distobuccal canal of a mandibular molar. SUMMARY With the assistance of stainless steel hand files and a chloroform-dipped gutta-percha cone, a fractured rotary NiTi instrument was successfully removed. The use of this technique may assist in removal of loose instrument fragme...

In the Iberian Pyritic Belt (SW Europe), Acid Mine Drainage (AMD) is consequence of interaction physical-chemical and biological factors, where aerobic Fe and/or S oxidizing chemolithotrophic anaerobic sulfate reducing bacteria play an essential role. As a result, polluted waters are highly acidic (pH 2–3) contain numerous dissolved or suspended metals, which gives them powerful corrosive actio...

statement of problem: various factors are involved in causing inflammation following root canal treatment. controlling these factors may relieve the related pain. one of these factors is extrusion of debris beyond the apex. although debris extrusion happens in all instrumentation techniques, researchers have declared that in coronal flaring technique, there is minimum debris extrusion. purpose:...