by Pierre Bernstein  , Yiteng Xing  and Jacques Noudem

Received: 07 July 2022;  Published: 15 September 2022;  doi: 10.21926/rpm.2203018

Stable levitation of systems consisting of a magnetic source and a superconductor is actively investigated due to the promising applications of this technology. While huge efforts have been made for modeling these setups with numerical simulations, analytical models, in spite of their use being limited to devices with a high degree of symmetry, can bring precious information on certain characteristics of levitating systems. Summarizing our previous work in the field, we present the mean-field model that we have pro [...]

by Satoshi Migita  and Tomoya Yamaguchi

Received: 18 September 2019;  Published: 14 January 2020;  doi: 10.21926/rpm.2001003

The surface roughness of titanium could regulate various cellular functions such as survival and growth. In the context of cell adhesion to materials, cell spreading and cell shape are also closely linked to various cellular functions. Previously, we found that Ti substrate with a 100-nm scale surface roughness reduced cell survival. However, effects of surface roughness on cell shape were not investigated. Herein, we quantified the initial adhesion behavior of osteoblasts on a Ti substrate with ~100 nm scale surfa [...]

by Sam T Briggs  , Mary Beth B Monroe  , Mark A Weizbicki  , Sayyeda Marziya Hasan  and Duncan J Maitland

Received: 05 April 2021;  Published: 25 June 2021;  doi: 10.21926/rpm.2102025

Shape memory polymers (SMPs) are highly attractive materials for medical devices. Specifically, SMP foams are currently being used as embolic devices in peripheral and cerebral vascular applications. To ensure the proper function and safety of these materials in their intended applications, it is important to understand how processing treatments, such as aging, sterilization, and foam composition can influence their degradation. Here, SMP foams were treated with industry relevant processing parameters, and the infl [...]

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

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

The present study aimed to characterize wastewater fractions obtained after the wet extraction of proteins from legumes. In addition, the suitability of wastewater fractions for the potential recovery of high value-added compounds was also examined, and consequently, the prevention of the environmental impact of these wastes was explored. Similar to the industrial production of proteins, wet alkaline and acidic extractions of proteins from faba bean and pea flours were performed in two stages of extraction. The dif [...]

by C. Aris Chatzidimitriou-Dreismann

Received: 31 March 2020;  Published: 23 June 2020;  doi: 10.21926/rpm.2002015

Current developments of non-relativistic quantum mechanics appear to predict, and reveal, counter-intuitive dynamical effects of hydrogen in nanostructured materials that are of considerable importance for basic research as well as for technological applications. In this review, the experimental focus is on H2O and H molecules in carbon nanotubes and other nanocavities that have been experimentally investigated using the well-established technique of incoherent inelastic neutron scattering (INS). For instance, the [...]

by Maathar Al Qasimi  , Dhafer Manna Al Zulayqa  and Mostafa Seifan

Received: 29 July 2020;  Published: 23 October 2020;  doi: 10.21926/rpm.2004022

Additive manufacturing is a recent revolution in the construction field since cementitious materials became printable. This extrusion technique has enabled the construction of very complex geometry with a reduction in costs, time and labour interventions. This study aims to evaluate the possibility of reinforcing 3D printable cementitious composites with the use of nano and micro materials, particularly nano silica, micro silica and microfibrillated cellulose (MFC) which are known for their ability to enhance the f [...]

by Adefemi Adebisi Alade  and Ahmed Ibrahim

Received: 22 September 2022;  Published: 09 January 2023;  doi: 10.21926/rpm.2301003

Performance evaluations of wood and other lignocellulosic-based composites involve complex scenarios of several factors such as material heterogeneity and geometry that often leads to complicated, expensive, and time-consuming experimental procedures. Hence, the application of computational modeling and simulation is desirable to mitigate these biocomposites’ performance testing challenges. This review paper, therefore, presents an outlook on the finite element method (FEM) application in probing performance charac [...]

by Christopher Igwe Idumah  , Ifeanyi Emmanuel Okoye  and Chioma Joan Ikebudu

Received: 05 September 2024;  Published: 02 February 2025;  doi: 10.21926/rpm.2501005

3-Dimension printing (3-DPT) or additive manufacturing (AM) technology has been utilized for a while in the construction of customized 3-D objects utilizing computer software such as computer-aided design (CAD). However, the emergence of an innovative and new four-dimensional printing (4-DPT) has enabled the synergy of AM technology with programmable materials in transforming digital processes virtually into physical entities, thereby providing innovation and advanced functionalities. 4-DPT is a procedure facilitat [...]

by Angelo Morro

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

The objective 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; second, to demonstrate a connection between the quantum and classical models of diffusion. As diffusion is inherently related to the motion of constituents, the consistent models are framed within the dynamics of mixtures. The derivation of diffusion equations is then determined based on the related, pertinent approximations.

by Pei-Yu Wu  , Kristina Mjörnell  , Claes Sandels  and Mikael Mangold

Received: 22 January 2021;  Published: 11 May 2021;  doi: 10.21926/rpm.2102017

Assessment of the presence of hazardous materials in buildings is essential for improving material recyclability, increasing working safety, and lowering the risk of unforeseen cost and delay in demolition. In light of these aspects, machine learning has been viewed as a promising approach to complement environmental investigations and quantify the risk of finding hazardous materials in buildings. In view of the increasing number of related studies, this article aims to review the research status of hazardous mater [...]

by Kiril Fedorov  , Sonia Sheikh  , Alex Romaschin  and Michael Thompson

Received: 03 May 2020;  Published: 18 August 2020;  doi: 10.21926/rpm.2003019

During a variety of medical procedures such as renal dialysis, bypass surgery, and lung transplantation patient blood is exposed to the surface of a number of polymeric materials such as polycarbonate (PC), poly (vinyl chloride) (PVC) and polysulfone (PS) for a period up to several days. Such exposure may result in undesirable protein-material interactions that can potentially trigger deleterious biological processes including thrombosis, which may be responsible for other complications such as cognitive disability [...]

by A. Guillermo Bracamonte

Received: 24 November 2024;  Published: 18 February 2025;  doi: 10.21926/rpm.2501007

The generation of non-classical light with improved performances within tiny sizes, intervals of lengths, and diameters is still a challenge. The generation of variable wavelengths associated with different frequencies of energy modes produced from new sources of emitters within confined scales from the Quantum to Nano-and Micro-scales are of high impact. It is noted here that the concept of the generation of non-classical light related to electronics and photonics interactions with different topological matter con [...]

by Michael Toryila Tiza  , Samson Imoni  , Ebenezer Ogırıma Akande  , Onyebuchi Mogbo  , Victoria Hassana Jiya  and Collins Onuzulike

Received: 04 July 2023;  Published: 26 September 2024;  doi: 10.21926/rpm.2403023

This study addresses the evolving challenges in infrastructure development by exploring recent advancements in civil engineering materials. The problem lies in the limitations of traditional materials such as concrete and steel, which, while foundational, may not fully meet the demands of modern construction in terms of sustainability, durability, and resilience. The objective of this review is to assess the role and impact of both traditional and emerging materials, including supplementary cementitious materials, [...]

by Lia Ofek  , Daniella Goder  and Meital Zilberman

Received: 31 July 2019;  Published: 11 October 2019;  doi: 10.21926/rpm.1904004

Background:Wound management is an important field in medical care, as annually, millions of wounds require treatment worldwide. Soy protein is highly biocompatible, easily processed, and a relatively cheap natural polymer, which can be used for wound dressing applications. Methods:In this study, solvent cast soy protein films, plasticized by glycerol and cross-linked by glyoxal, were thermally treated and their mechanical properties were evaluated as a function of various processing parameters. Samples were then lo [...]

by Zhong Hu  and Ruanbao Zhou

Received: 15 March 2024;  Published: 27 June 2024;  doi: 10.21926/rpm.2402015

Biodegradable plastics/polymers may serve as a promising solution to the global problem of plastic waste accumulation in oceans and soil and may significantly reduce carbon emissions from the manufacturing process, since the materials used to make biodegradable polymers are carbon-based and emitted during the synthesis processes. This article systematically reviewed the existing and closely related scientific literature on materials, biomaterials, and biodegradable materials to find answers on how to effectively st [...]

by Michelle Szucs  , Miguel Angulo  , Carlos Costa  and Mª Carmen Márquez

Received: 12 May 2021;  Published: 08 November 2021;  doi: 10.21926/rpm.2104045

Five different commercial proteases (Alcalase 2.4L, Flavourzyme 1000L, Neutrase, Protamex, and PTN) were evaluated for the simultaneous recovery of protein and lipids through hydrolysis. The hydrolysis reaction was monitored using the pH-stat procedure, in which samples were collected after 240 min of hydrolysis using each enzyme. The samples were analyzed for the degree of hydrolysis, protein hydrolysate, collagen, lipids, and fatty acids. A clear relationship was observed between the degree of hydrolysis and the [...]

by Andrea P. Cuevas-Gómez  , Izlia J. Arroyo-Maya  and Humberto Hernández-Sánchez

Received: 26 April 2021;  Published: 22 June 2021;  doi: 10.21926/rpm.2102027

Whey protein is a byproduct of cheese, casein, and Greek yogurt produced in Europe, North America, and Australasia. It is a substantial source of functional proteins and peptides for the worldwide food industry. α-Lactalbumin (α-La) is a globular protein that can be isolated from WPI (whey protein isolates) using techniques such as chromatography/gel filtration, membrane separation, etc. α-La is used in the elaboration of functional foods and is a very good source of peptides with anticancer, antimicrobial, antivir [...]

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 high temperature structural 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 familie [...]

by Athanasia Soultana  , Michael Galetakis  , Anthoula Vasiliou  , Konstantinos Komnitsas  and Despina Vamvuka

Received: 11 February 2021;  Published: 17 August 2021;  doi: 10.21926/rpm.2103035

Waste concrete is the most predominant constituent material among construction and demolition waste. Current waste concrete recycling is limited to the use of recycled concrete aggregates as a road-base material and less as aggregates in new concrete mixes. Further, the production of recycled concrete aggregates results in the generation of a high amount of fines, consisting mainly of cement paste particles. Hence, this study aims to produce the cement mortars using the upgraded recycled concrete aggregates (sand g [...]

by Evelyne El Masri  and Tat-Hean Gan

Received: 28 May 2020;  Published: 27 August 2020;  doi: 10.21926/rpm.2003020

Carbon fibre reinforced polymer (CFRP) systems as sheets or plates are commonly used to strengthen and retrofit damaged reinforced concrete beams. In general, the bond between the FRP element and concrete defines the effectiveness of the externally bonded FRP materials. In most cases, the interface bonding behaviour is usually tested via static loading conditions. In this paper, the bonding is verified under dynamic conditions. Wave propagation is modelled in delaminated CFRP strengthened reinforced concrete beam. [...]

by Omar Alelweet  , Sara Pavia  and Zehao Lei

Received: 28 September 2021;  Published: 29 November 2021;  doi: 10.21926/rpm.2104047

This paper investigates the composition, properties and reactivity of a red mud waste generated in Saudi Arabia with a view to find alternative materials to replace construction binders of high environmental impact. The phase transformation triggered by the sintering of the RM up to 1000°C is determined with thermal and X-Ray Diffraction analyses. Reactivity is investigated with chemical and physical methods including the Chapelle test, setting times, mechanical index and microscopy. The RM is clearly pozzol [...]

by Vardan Apinyan

Received: 30 March 2023;  Published: 24 June 2023;  doi: 10.21926/rpm.2302026

This paper considers a finite-sized two-leg ladder of spin-1/2 particles with local inter-chain Ising interaction. We include the effects of an external magnetic field by incorporating a Zeeman-type coupling between the magnetic field and the spins localized on the lattice sites. To analyze the system, we utilize the transfer-matrix formalism to calculate the partition function. We compute the magnetization for different configurations by varying the system's parameters. We observe the presence 3of spontaneous magn [...]

by Aurélie Laborel-Préneron  , Paulina Faria  , Jean-Emmanuel Aubert  and Camille Magniont

Received: 12 March 2021;  Published: 07 May 2021;  doi: 10.21926/rpm.2102016

Bio-based earth composites present various environmental benefits, such as usable wastes, coproducts, abundant or renewable materials, etc. Moreover, the incorporation of bioaggregates in the earth matrix allows the buildings to act as an effective carbon sink. A growing number of studies are now focusing on the mechanical and hygrothermal properties of bio-based earth building materials. However, the durability of these types of material is a major concern, and knowledge of their various aspects is essential to an [...]

by Heizel Rosado-Galindo  and Maribella Domenech

Received: 15 March 2020;  Published: 14 May 2020;  doi: 10.21926/rpm.2002013

Cells can respond to different topographical cues in their natural microenvironment. Hence, scientists have employed microfabrication techniques and materials to generate culture substrates containing topographies for cell-based assays. However, one of the limitations of custom topographical platforms is the lack of adoption by the broad research community. These techniques and materials have high costs, require high technical expertise, and can leach components that may introduce artifacts. In this study, we devel [...]

by O.A. Kornienko  , S.V. Yushkevych  , A.V. Sameljuk  and O.R. Andrievskaya

Received: 24 May 2021;  Published: 02 September 2021;  doi: 10.21926/rpm.2103036

The phase equilibria and structural transformations in the ternary ZrO2-CeO2-Eu2O3 system at 1500 °C were studied by X-ray diffraction and scanning electron microscopy in the overall concentration range. The system was found to constitute fields of solid solutions based on the tetragonal (T) modification of ZrO2, cubic (C) and monoclinic (B) modifications of Eu2O3, cubic with a fluorite-type structure (F) modifications of CeO2 (ZrO2), and ordered intermediate phase with a pyrochlore-type structure of Eu2Zr2O [...]