by CT Valliappan  , J Joyson Joe Asir  , V Subashri  , V Vaishnavi  and I Anand Sherwood

Received: 28 December 2020;  Published: 27 April 2021;  doi: 10.21926/rpm.2102014

Furcal perforation management in root canal retreatment is often challenging as the outcome of the perforation sealing depends on several parameters. The recent introduction of several bioactive cements and magnification systems has made the sealing of perforations easier and the outcome more predictable. This study highlights the clinical outcomes of furcal perforation management in root canal retreatment using biodentine.

by Sofía Albolafio  , María I. Gil  , Ana Allende  and Epameinondas Xanthakis

Received: 02 December 2020;  Published: 21 April 2021;  doi: 10.21926/rpm.2102013

This study aimed at the characterization of wastewater fractions obtained after the wet extraction of proteins from legumes. The suitability of wastewater fractions for the potential recovery of high value-added compounds was also examined and as a consequence, the prevention of the environmental impact of these wastes. Similarly to industrial protein production, wet alkaline and acidic extractions from faba bean and pea flours were performed in two extraction processes (first and second stages). The different wast [...]

by Eugene Mananga

Received: 26 December 2020;  Published: 13 April 2021;  doi: 10.21926/rpm.2102012

Light-matter interaction at the nanometer scale lies at the heart of many physical problems including magnetic resonance and optical spectroscopy. Over the past two decades, we have introduced various theoretical methods in nuclear magnetic resonance (NMR)1, and we have realized a series of experiments to investigate the interaction of electromagnetic waves or photons with various materials used in fuel cells and lithium-ion batteries (LIBs) for the energy storage materials for the benefit of society. In this persp [...]

by Angelo Morro

Received: 19 February 2021;  Published: 13 April 2021;  doi: 10.21926/rpm.2102011

The purpose of the paper is twofold. First, to review the classical diffusion models and show the approximations at the origin of the parabolic character of the classical equations. Secondly, to show a connection between quantum and classical models of diffusion. Since diffusion is inherently related to the motion of constituents then consistent models are framed within the dynamics of mixtures. The derivation of diffusion equations is then determined along with the related, pertinent approximations.

by Dimitris Kouzoudis  , Georgios Samourgkanidis  and Christos I. Tapeinos

Received: 12 December 2020;  Published: 06 April 2021;  doi: 10.21926/rpm.2102010

In the current work, 30 micron thin magnetoelastic ribbons made of metallic glass are embedded inside 6 mm thick PLA plastic cantilever beams made by 3-D printing, in order to detect the beams harmonics during bending excitation. This is possible because the ribbons are of magnetoelastic nature and thus changes in their mechanical state induce a corresponding change in their magnetic state. The ribbons are placed at four different depths, starting with zero depth at the beam’s external surface all the away inside [...]

by Chandra Mouli Vemury  , Marco Corradi  , Feras Abozaid  and Alasdair Charles

Received: 19 August 2019;  Published: 30 March 2021;  doi: 10.21926/rpm.2101009

Shape memory alloys (SMA) are metallic materials with special thermo-mechanical characteristics which could have many structural applications. Within this class of materials, Ni-Ti (Nickel-Titanium) alloys have numerous applications owing to the significant non-linear behaviour they demonstrate. Nitinol, one of the Ni-Ti alloys, has unique properties such as super-elasticity and shape memory effect which makes it suitable for damping vibrations transmitted to structures during high wind and seismic events. Results [...]

by Kohl Jacobson  , Sam Strassler  , Courtney Spalt  , Sara Henry  , Arthur Powers  and Donald W. Radford

Received: 22 December 2020;  Published: 29 March 2021;  doi: 10.21926/rpm.2101008

Continuous fiber reinforced geopolymer matrix composites offer the potential for use in structural applications at temperatures up to 700°C, while enabling the manufacture at temperatures below 100°C. Studies have investigated a variety of fiber reinforcements, including carbon, SiC and Al2O3. While there has been active research into various grades of Al2O3 fibers, SiC is most commonly used for high temperature reinforcement of geopolymers in oxidizing environments. Both families of reinforcement are relatively [...]

by Supriya Rattan  , Derek Fawcett  , M. Tennant  , Joanna Granich  and Gerrard Eddy Jai Poinern

Received: 02 November 2020;  Published: 05 March 2021;  doi: 10.21926/rpm.2101007

To date, many studies have examined the development and use of novel materials, enhancing the performance of existing dental composites and improving methods for restoring tooth structure. In recent years, nanotechnology-based techniques have been used to develop a variety of nanomaterial-based dental products aimed at conservative dentistry applications. These new nanomaterial-based materials offer improved physicochemical and mechanical properties, combined with enhanced aesthetics that makes them superior restor [...]

by Paola Stabile  , Francesco Radica  , Luigi Ranza  , Michael R. Carroll  , Carlo Santulli  and Eleonora Paris

Received: 12 December 2020;  Published: 02 March 2021;  doi: 10.21926/rpm.2101006

In this work, two types of wastes were introduced, namely, glass from municipal waste and Construction and Demolition Waste (CDW). The latter, which was obtained from rubble generated by the seismic events occurred in Central Italy in 2016, was introduced in two configurations, the single-layer and the double-layer of the cement-based Terrazzo tiles. A maximum of 77% of waste introduction was proven to be possible, therefore creating the possibility of obtaining construction products including high quantities of se [...]

by Gérald Lopez

Received: 25 November 2020;  Published: 25 February 2021;  doi: 10.21926/rpm.2101005

Polymers such as polyimides and fluoropolymers are widely used for insulating aeronautic wires. They are exposed to various changing factors such as temperature, pressure, moisture, vibration, chafing, etc. The electrification on the horizon can potentially increase the demand for these systems. Indeed, this impending evolution of technology pushes the boundaries of commonly-employed wires. Downsizing systems and enhancing the performance is an urgent requirement. A new generation of insulating materials capable of [...]