the aim of ideal canal preparation is to prevent iatrogenic aberrations such as transportation. the aim of this study was to evaluate the root canal transportation by reciproc file with and without glide path.thirty acrylic-resin blocks with a curvature of 60° and size#10 (2% taper) were assigned into two groups (n= 15). in group 1, the glide path was performed using stainless steel k-files siz...

kinetic parameters of the ammonolysis reaction of dichloroethane in nonaqueous media are studied and the optimum reaction conditions are reported. a suitable reactor for running the reaction under high pressure in the range of 50 to 500 °c is designed. kinetic behaviours of the system is studied and other reaction parameters such as rate constant, kinetic order, and activation energy are determ...

introduction: the purpose of this in-vitro study was to compare shaping ability of niti rotary mtwo and flexmaster with stainless steel hand k-flexofile in curved root canals of extracted teeth. materials and methods: mesiobuccal canals of 45 mandibular molar teeth were balanced into three groups of 15 each, with respect to the schneider angle, canal access angle, height, dis-tance and radius o...

ABSTRACT This document presents the educational research model from classroom implemented at Colegio Gimnasio Campestre El Rodadero, in city of Santa Marta, Colombia. consisted creating a seedbed integrating middle school students, with aim generating academic spaces that would allow development investigative skills area humanities, according to guidelines national Ministry Education proposes. ...

Due to the variability of soil characteristics in field and rising prices high-quality seeds, farmers are increasingly interested applying a system precision variable rate seeding (VRS), which makes it easier manage risks crop production allows ensure profitability farm. Most modern seed drills equipped with hydraulic or electric drive terminal tractor cabin, allowing apply VRS. The aim this st...

Sowing or seedbed depth is an important agro-technological parameter that varies with specific on-field soil and microclimatic conditions depends on crop biology. There a lack of detailed information regarding how relates to other parameters affects the development agricultural crops. Several seeder constructions methods for seeding condition detection adjustment have been investigated in high-...