This paper describes the experimental efficiency of a compact organic Rankine cycle (ORC) system with a compact rotary-vane-type expander. The compact ORC system can be used for power generation from low-temperature heat sources such as waste heat from various small-scale heat engines, fuel cells, electric devices, and solar thermal energy. The purpose of this study is to develop an ORC system ...

Presently the on-the-road transportation sector is responsible of 21% whole CO 2 amount emitted into atmosphere. This pushes International Governments and Organizations to provide strict limitations in terms ICEs emissions, also introducing fees payment for car manufacturers. The vehicle electrification allows certainly meet these requirements, but higher cost need a green electricity still lim...

This systematic review was registered in PROSPERO (CRD42017075917) and aimed to investigate whether the available clinical evidence supports hypothesis that reciprocating motion results a lower incidence of nickel-titanium files fracture compared continuous rotation. Clinical studies reported engine-driven were included. The main exposure kinematics, primary outcome fracture. overall 2.27%, wit...

INTRODUCTION Preparation techniques and instruments produce and push debris out of canals. This can induce inflammation within the periapical area. Therefore, instrumentation that causes less extrusion of debris is more desirable. The purpose of this in vitro study was to evaluate the quantity of debris extruded from the apical foramen during root canal preparation by using one hand, and two ro...

INTRODUCTION The aim of the present work was to evaluate the resistance to flexural fatigue of Reciproc R25 nickel-titanium files, 25 mm, used in continuous rotation motion or reciprocation motion, in dynamic assays device. METHODS Thirty-six Reciproc R25 files were divided into 2 groups (n = 18) according to kinematics applied, continuous rotary (group CR) and reciprocation motion (group RM)...