instruments have been traditionally used with a continuous rotary motion, but more recently, a new approach to the use of nickel-titanium instruments in a reciprocating movement has been introduced by Yared (2004). The clockwise (CW) and counter-clockwise (CCW) rotations used by Yared were four-tenths and two-tenths of a circle respectively, and the rotational speed utilized was 400 rpm. The co...

INTRODUCTION The aim of this ex vivo study was to evaluate the removal of filling material after using CM-wire, M-wire, and nickel-titanium instruments in both reciprocating and rotary motions in curved canals. METHODS Thirty maxillary lateral incisors were divided into 9 groups according to retreatment procedures: Reciproc R25 followed by Mtwo 40/.04 and ProDesign Logic 50/.01 files; ProDesi...

There is an extensive literature across the humanities and social sciences on reciprocity as a fundamental driver of human behavior, and yet attempts to bring the main arguments from the diverse literatures together in a single interdisciplinary space remain scarce. This article aims to collate many of the main arguments from these literatures with the intention of speculating how reciprocity m...

As compared with continuous rotary systems, reciprocating motion is believed to increase the fatigue resistance of NiTi instruments. We compared the cyclic fatigue and torsional resistance of reciprocating single-file systems and continuous rotary instrumentation systems in simulated root canals. Eighty instruments from the ProTaper Universal, WaveOne, MTwo, and Reciproc systems (n = 20) were s...

Condition monitoring data collection capabilities have grown over the last decade in large part due to advances in integrated circuits (IC). These advances now permit real time thermodynamic and process calculations on desktop computing platforms. With these capabilities, the sophistication and amount of data available to the users of rotating and reciprocating equipment has grown exponentially...

Abstract Rural irrigation could be challenging in regions without proper access to electricity. In many remote places of Nepal, where the takes place vicinity a river stream, water pump or coil can used supply from lower terrain field. Water powered is reciprocating that operates by rotating coiled tube, harnessing power flowing river. A comparison performance cylindrical and conical shaped pum...

A reciprocating fuel pump system was investigated using a modeling approach. The diesel comprises variable-sized barrel and plunger. This study investigates the effect of diesel, propane, DME fuels on plunger barrel’s deformation flow rate characteristics. It compares displacement as function working pressure. Based multi-field coupling theory, numerical fluid–solid thermal model developed to c...

Reducing harmful emissions from exhaust gases and increasing energy efficiency are urgent tasks when designing reciprocating internal combustion engines. In this experimental work, the fuel system of a diesel locomotive engine operating on Miller cycle is improved. The purpose study to improve environmental economic indicators engines at minimal financial cost. article provides an overview main...

general concept and major emphasis on off-pump coronary artery bypass surgery (opcab) is maintaining quality of care and patient safety while reducing cost and resource utilization. opcab probably avoids the potential complications of cardiopulmonary bypass. however its acceptance depends on clinical and economic outcome. the aim of this study is to compare clinical and economic outcome of off-...

Improvement of technical objects and systems energy efficiency, the most widespread which are heat engines, is an urgent task, for solution it necessary to use various methods. The review scientific publications allows single out exergic analysis based on balance power installations different purpose design as one basic universal methods efficiency estimation. Substantiation universality method...