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:...

Abstract The solar corona hosts many explosive events. Among them, flares are some of the most energetic, rapidly releasing huge amounts energy and, in case largest ones, producing coronal mass ejections that have potential to harm life on our planet. Therefore, there is great interest attempting foresee occurrence extreme flares. Avalanche models for been used since beginning 1990s model flari...

Gas flaring is commonly used by industrial plants for processing oil and natural gases in the atmosphere, and hence is an important anthropogenic source for various pollutants including CO2, CO, and aerosols. This study evaluates the feasibility of using satellite data to characterize gas flaring form space by focusing on the Khanty Mansiysk Autonomous Okrug in Russia, a region that is well kno...

We discuss the impact of special relativistic effects on the observed light curves and variability duty cycles of radio-loud active galactic nuclei (AGNs). We model the properties of AGN light curves at radio wavelengths using a simulated shot noise process in which the occurrence of major flaring events in a relativistic jet is governed by Poisson statistics. We show that flaring sources whose...

A flare is a combustion device that uses air or steam to burn associated, unwanted or excess gases and liquids released during production or by pressure relief valves during unplanned over-pressuring of plant equipment in many industrial operations, such as oil-gas extraction, refineries, chemical plants, coal industry and landfills. Several environmental problems caused by gas flaring such as ...

We present a new method to analyze, classify and characterize 3D landmark-based shapes. It is based on a framework provided by oriented matroid theory, that is on a combinatorial encoding of convexity properties. We apply this method to a set of skull shapes presenting various types of coronal craniosynostosis.

Quasi-periodic fast propagating (QFP) waves are often excited by solar flares, and could be trapped in the coronal structure with low Alfvén speed, so they used as a tool for diagnosing both flaring core magnetic waveguide. As periodicity of QFP wave originate from periodic source or dispersively waveguided, it is key parameter In this paper, we study two Geostationary Operational Environmental...

Objective: The purpose of this study was to evaluate the effect using single-file with different tapered coronal flaring files on dentinal crack. Material and Methods: Human extracted mandibular premolars (n=128) were selected divided into four groups (n=32) based instruments; Group 1, One Flare; 2, Endoflare; 3, Gates Glidden Drills; 4, Control Group. Specimens subgroups single file system (n=...