Abstract Background Shaping ability of a file plays an important role during instrumentation in endodontic treatment. This study aimed to compare the shaping OneShape (OS), Hero Shaper (HS), and Revo-S (RS) instruments simulated L-shaped canals. Methods Forty-eight canals were prepared apical size 25 using OS, HS, RS (all from Micro-Mega SA, Besançon, France), (n = 16 canals/group) systems. The...

A methodology to miniaturize mechanical tests of metal alloys based on membrane deformation was developed in this investigation. The buildup new path for miniaturization requires small amounts material testing. This is particular interest irradiated structural nuclear materials. Micrometric metallic circular membranes were fabricated starting from thin alloy foils and using two different paths....

We empirically test whether B Corp certification affects the short- and medium-term growth rates of sustainable enterprises. These businesses are growing in popularity prevalence but, due to their hybrid nature, often suffer from external credibility issues competing internal logics. Because rigorous time-involving audit procedure, potentially sends a credible signal about nature enterprise its...

By dividing the production process into technical processes and procedural processes, this paper supplements theoretical connotation of roundaboutness, analyzes discusses micro impact mechanisms environmental regulation on industrial structure through roundaboutness. Subsequently, based panel data 31 provinces cities in China from 2003 to 2017, a threshold model was adopted empirically analyze ...

Bracing plays a vital role in the non-operative treatment of adolescent idiopathic scoliosis (AIS), especially when detected early. Recent high-quality studies confirm that bracing can alter natural progression curve, potentially preventing need for surgery. The concept is based on ability external force to guide spine growth, which has been experimentally proven. However, cannot straighten spi...

Self-healing term is widely used by the youth generation lately in cyber and real world. People comprehend as effort to heal oneself from heart discomfort caused a failure, pressure, anxiety, disappointment, insecurity, et cetera, seek inner serenity tranquility. However, unfortunately, some people choose do self-healing wrong deviant way. Therefore, this research aims straighten up reveal conc...

Abstract Greedy algorithms are among the most elementary ones in theoretical computer science and understanding conditions under which they yield an optimum solution is a widely studied problem. Greedoids were introduced by Korte Lovász at beginning of 1980s as generalization matroids. One basic motivations notion was to extend background behind greedy beyond well-known results on Indeed, many ...

Parkia biglobosa is a much-loved and over-exploited African savannah species for its socio-economic importance. Knowing taking into account architectural unit, which the basis diagnosing phenology, productivity tree health, could provide new perspective on sustainable management. The aim of this study to establish development in by retrospective analysis. To achieve objective, 390 individuals a...