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Open Access Original Research

Impact of the COVID-19 Pandemic Measures on the Number of Meals and the Types of Physical Activity of Adolescents: Cross-Sectional Study in Delhi, India

Received: 10 January 2022;  Published: 30 March 2022;  doi: 10.21926/rpn.2201010

Abstract

COVID-19 greatly affected the lives of adolescents through restrictions such as less playtime, more screen time, and limited interaction with peers. In this study, we assessed the impact of the COVID-19 pandemic on the dietary and physical activity-related behavior of school students aged 10–16 years. This cross-sectional study was conducted with adolescents recruited from seven randomly selected private schools in Delhi, India, during 2021. A self-administered web-based survey was conducted to evaluate the behavio [...]

2352 12800

Open Access Original Research

Physical Activity Mentoring in Schools: An Undergraduate-Mentored Running Intervention for Elementary Students

Received: 17 December 2021;  Published: 15 March 2022;  doi: 10.21926/rpn.2201009

Abstract

Most children do not meet physical activity guidelines, and school-based programs often fail to increase physical activity levels. However, there has been no intervention pairing college mentors with elementary students to date. The purpose of this paper is to report the feasibility and acceptability, both quantitative and qualitative, of an undergraduate-mentored running program designed to increase physical activity in elementary students. A convergent parallel mixed methods design was used to evaluate the feasib [...]

2060 15666

Open Access Review

Sulforaphane: The Principal Broccoli Phytochemical as a Cancer Challenger

Received: 10 January 2022;  Published: 14 March 2022;  doi: 10.21926/rpn.2201008

Abstract

Broccoli has long been reported to exert a positive impact on human health. It contains high levels of isocyanates, the most important of which is sulforaphane (SFN). Numerous studies have demonstrated that SFN can be used as an effective supplement for treating a variety of diseases. In addition, it is known to possess anti-cancer properties such as chemopreventive properties against gastrointestinal, breast, lung, bladder, prostate, and other cancers. The reported data indicates that broccoli could be a potent in [...]

2674 30227

Open Access Short Communication

Gut Microbiota Potentiates the Effect of Immune Checkpoint Therapy against Cancers

Received: 16 November 2021;  Published: 08 March 2022;  doi: 10.21926/rpn.2201007

Abstract

Immune checkpoints have been aggressively investigated for anti-cancer immunotherapy. The power of microbiota on the outcome of this immunotherapy has attracted much attention. For example, intestinal microorganisms play a key role in the effectiveness of programmed cell death 1 (PD1) and cytotoxic T lymphocyte-associated antigen 4 (CTLA4) blockade. Additionally, short-chain fatty acids produced in the gut may modulate anti-CTLA4 and anti-PD1 stimulated immune responses and their anti-tumor efficacy. Enhancing the [...]

1661 13003

Open Access Original Research

Metabolic, Anthropometric and Blood Pressure Effects of Adding Two Kiwifruit or Bottled Water into the Diets of People with Pre-Diabetes: A Randomised, Parallel Group, Intervention Study

Received: 22 December 2021;  Published: 25 February 2022;  doi: 10.21926/rpn.2201006

Abstract

People with pre-diabetes may be reluctant to add fruit to their diets due to concerns around sugars. Our objective was to measure outcomes associated with potential adverse effects of ingesting fruit sugars while assessing metabolic benefits from eating nutrient-rich kiwifruit. Thirty-four people with pre-diabetes were randomized to receive two kiwifruit or 250 mL bottled water per day for 12-weeks; two people withdrew. The primary outcomes were between-group differences for glycated haemoglobin (HbA1c) and plasma [...]

1987 15562

Open Access Review

Dietary Needs, Approaches and Recommendations to Meet the Demands of Future Manned Space Flights

Received: 09 December 2021;  Published: 23 February 2022;  doi: 10.21926/rpn.2201005

Abstract

Space flight imposes a myriad of adverse effects upon the human body. Improved in-flight nutritional strategies help mitigate those adverse effects. This review examines how space flight changes human physiology, and how improved in-flight nutritional strategies may address the unique dietary needs created by microgravity exposure. Dietary approaches and recommendations to address those needs are discussed. This review also describes food sustainability methods for long-term manned space flight, how precision nutri [...]

2195 14925

Open Access Original Research

Association of Club Sports Participation and TV in the Bedroom with Dietary Pattern in Austrian Adolescents

Received: 15 November 2021;  Published: 18 February 2022;  doi: 10.21926/rpn.2201004

Abstract

Poor lifestyle choices in adolescents, including low physical activity (PA), excess screen time, and unhealthy dietary habits, are major threats to their health in the future. Unhealthy behaviors such as insufficient PA, high TV time, and poor dietary choices also tend to cluster, but information on the combined association of screen time, sports participation, and dietary habits is limited in Austrian youth. To examine the association among these behaviors, 165 adolescents (74 girls and 91 boys) between 11 and 14 [...]

1692 11075

Open Access Review

Ketogenic Therapy for Major Depressive Disorder: A Review of Neurobiological Evidence

Received: 06 December 2021;  Published: 17 February 2022;  doi: 10.21926/rpn.2201003

Abstract

Major depressive disorder (MDD) is a debilitating illness that places a great burden on global health. A ketogenic diet, which has traditionally been used for treating refractory epileptic disorders, is being increasingly explored for its potential of alleviating other neuropsychiatric conditions. Providing an up-to-date summary on the ketogenic diet’s potential to alleviate MDD, its neurobiological basis, and preliminary clinical evidence. A structured literature survey was performed, and a narrative review was wr [...]

2506 28252

Open Access Review

Parenteral Nutrition: Review of Recent American Society for Parenteral and Enteral Nutrition Publications

Received: 30 December 2021;  Published: 15 February 2022;  doi: 10.21926/rpn.2201002

Abstract

Parenteral nutrition (PN) is a complex medication administered to adult, pediatric, and neonatal patients. PN is recognized as a high-alert medication by the Institute for Safe Medication Practices (ISMP). The American Society for Parenteral and Enteral Nutrition (ASPEN) has published several key recommendations regarding safe use of PN. This manuscript will review several of the important PN papers published in 2020-2021 by ASPEN.

2456 14348

Open Access Research Article

An Exploration of Preschool Teachers’ Perceptions of Physical Activity Integration in a Whole Child Pilot Curriculum

Received: 15 November 2021;  Published: 13 January 2022;  doi: 10.21926/rpn.2201001

Abstract

It is recommended that children ages 3-5 receive 180 minutes of physical activity a day, with at least 60 minutes of moderate-to-vigorous physical activity. Despite these recommendations, a majority of preschoolers are not provided opportunities in the early childhood education setting to meet these daily recommendations through either structured or unstructured physical activity. Accordingly, the number of young children identified as overweight or obese over the past couple of decades has increased. Critical to a [...]

2695 16824

Open Access Original Research

Consumption of a Recommended Serving of Wheat Bran Cereals Significantly Increases Human Faecal Butyrate Levels in Healthy Volunteers and Reduces Markers of Inflammation Ex Vivo

Received: 08 October 2021;  Published: 17 December 2021;  doi: 10.21926/rpn.2104002

Abstract

Wheat bran cereals are an important source of dietary fibre. The aim of the study was to investigate if a high intake (120 g) of fibre rich breakfast cereal (which delivers the UK Government guidelines for fibre intake in one serving but is three-fold higher than the manufacturers recommended serving) has additional potential health benefits compared to the recommended serving (40 g, containing 11 g of dietary fibre). To assess this, the study determined the short chain fatty acid (SCFA) profiles in human faecal, u [...]

2605 18309

Open Access Original Research

Ad Libitum Western Diet Feeding Does Not Alter Basal Skeletal Muscle Heat Shock Protein Expression in Sedentary or Aerobically Trained Young Rats

Received: 03 August 2021;  Published: 15 October 2021;  doi: 10.21926/rpn.2104001

Abstract

Poor dietary habits can lead to obesity and insulin resistance—both of which can impair basal heat shock protein (HSP) expression and the HSP stress response in skeletal muscle. It remains unclear if impairments in HSP expression occur during the early stages of diet-induced obesity and metabolic dysfunction. We determined if basal HSP expression (HSP70, HSP60, HSP25) was impaired in sedentary or exercised rats following the onset of diet-induced obesity. Male Long-Evans rats (N=6-7/group) were assigned to a [...]

1636 11765

Open Access Review

Recycled Concrete Aggregates: Production, Properties of RCA and RCA-Based Concrete, and Economic Considerations

Received: 10 February 2026;  Published: 15 June 2026;  doi: 10.21926/rpm.2602004

Abstract

The use of recycled concrete aggregate (RCA) offers a sustainable alternative to traditional virgin aggregates in concrete production, helping mitigate the environmental impacts associated with mining and construction waste disposal. RCA is characterized by the presence of attached mortar from previous concrete applications, which significantly influences the mechanical properties of the aggregates, as well as mix design and the overall performance of new concrete incorporating these recycled materials. This paper [...]

488 1741

Open Access Review

Advances Toward In Vivo Cartilage Repair: A Comprehensive Review of Current Strategies and Future Directions

Received: 03 December 2025;  Published: 07 April 2026;  doi: 10.21926/rpm.2602003

Abstract

The cartilage is avascular and has limited regenerative capacity, posing a significant clinical challenge. Conventional treatments often do not restore hyaline cartilage, leading to progressive osteoarthritis. Recent advances in tissue engineering have focused on integrating biomaterials, stem cells, growth factors, and gene-delivery approaches. In addition, in vivo models serve as critical platforms for translational validation. Biomaterial scaffolds, including polycaprolactone, silk fibroin, chitosan, and composi [...]

873 5299

Open Access Original Research

A New Model for the Shear of Atomic Planes

Received: 21 December 2025;  Published: 18 March 2026;  doi: 10.21926/rpm.2601002

Abstract

The article presents a model that describes the shear of atomic planes in crystalline solids by accounting for their electronic structure. Previous studies have shown that an isotropic distribution of valence electrons leads to a spherically symmetric interatomic potential, which affects the stability of the crystal lattice against small shear deformations. Under these conditions, lattice stability is largely determined by the crystal's surface layer. As a consequence, the resistance to atomic-plane shear exhibits [...]

526 1767

Open Access Editorial

Acknowledgment to Reviewers of Recent Progress in Materials in 2025

Received: 04 January 2026;  Published: 04 January 2026;  doi: 10.21926/rpm.2601001

Abstract

The editors of Recent Progress in Materials would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2025. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers can download a certificate of recognition directly from our submission system. Additionally, reviewers can sign up t [...]

604 1514

Open Access Original Research

Rapid Green Synthesis of Silver Nanoparticles and Alginate-Silver Nanocomposite Beads Using Mashmoom (Ocimum basilicum), a Bahraini Household Medicinal Herb

Received: 16 June 2025;  Published: 17 November 2025;  doi: 10.21926/rpm.2504017

Abstract

The study focuses on the rapid green synthesis of silver nanoparticles (AgNPs) and alginate-silver nanocomposite (Alg-AgNc) beads using sweet basil or Mashmoom (Ocimum basilicum), a common household medicinal herb in Bahrain. The aqueous extract of mashmoom was used as a reducing and stabilizing agent in the reduction of the precursor salt, silver nitrate, and formation of stable AgNPs. The Alg-AgNc beads were prepared by ionotropic gelation of sodium alginate-AgNPs solution in calcium chloride. A strong surface pl [...]

873 2958

Open Access Original Research

Deep Learning Approaches for Predicting Strain Energy in Heterogeneous Materials

Received: 15 July 2025;  Published: 24 October 2025;  doi: 10.21926/rpm.2504016

Abstract

This paper investigates data-driven strain energy prediction for heterogeneous elastic materials using the Mechanical MNIST benchmark dataset (60,000 28 × 28 stiffness maps by precomputed finite-element results). The results by classical regression models (linear regression, random forest, and gradient boosting) using hand-crafted features were compared with the results by the deep learning models (Convolutional neural network (CNN) and residual network (ResNet)) trained end-to-end on images. In held-out tests, CNN [...]

1326 4195

Open Access Original Research

Effect of EVA on the Unnotched Impact Toughness of PP/HDPE/EVA Blends

Received: 29 May 2025;  Published: 24 September 2025;  doi: 10.21926/rpm.2503015

Abstract

Beverage bottle caps are usually made from two primary materials: PP and HDPE. In this study, the evaluation criteria were the unnotched impact toughness and the microstructure of PP/HDPE/EVA samples produced by injection molding. The samples were tested according to ASTM D256. PP/HDPE/EVA blends were prepared with various ratios: 47.5/47.5/5, 45/45/10, 42.5/42.5/15, 40/40/20, and 37.5/37.5/25. The results showed that adding EVA to the PP/HDPE blend significantly increased the unnotched impact toughness: from 84.03 [...]

1372 6216

Open Access Original Research

Bioremediation of Organic Compounds and Trace Metals from Landfill Leachate Using Lactobacillus kefiri Strains: A Sustainable Approach Based on Facultative Treatment

Received: 09 November 2023;  Published: 16 September 2025;  doi: 10.21926/rpm.2503014

Abstract

The sustainable management of water resources is increasingly recognized as a critical component of environmental conservation and socio-economic development. Among the most challenging aspects of wastewater treatment is the effective remediation of landfill leachate, a complex and highly polluted effluent characterized by high levels of organic matter, ammonia, turbidity, and heavy metals. This study investigates an integrated treatment approach that combines chemical coagulation using aluminum sulfate with a subs [...]

953 4572

Open Access Original Research

Effect of Oil Palm Broom Fiber on the Mechanical Properties of Rice Husk Ash–Blended Concrete

Received: 04 June 2025;  Published: 04 September 2025;  doi: 10.21926/rpm.2503013

Abstract

The high carbon footprint of cement production and the cost and environmental impact of steel reinforcement make conventional concrete unsustainable for long-term use. Reducing cement consumption and identifying sustainable, cost-effective alternatives to steel are critical for lowering construction’s ecological and economic burden. Bio-based supplementary cementitious materials (SCMs), such as rice husk ash (RHA), and natural plant fibers show promise, but prior studies have mostly tested them separately or with v [...]

3162 13018

Open Access Review

Quantum Diamonds and the Future of Advanced Processors, Review on Benefits and Challenges

Received: 09 April 2025;  Published: 03 August 2025;  doi: 10.21926/rpm.2503012

Abstract

Nowadays, the development of advanced processors plays a key role in the progress of humanity and the discovery of new sciences, and quantum computers play an essential role in this regard. In this regard, the development of new generation processors is necessary for the development of quantum computers. Quantum diamonds, with their astonishing properties, especially the presence of nitrogen-vacancy (NV) centers in their crystalline structure, are among the most advanced emerging technologies in the field of quantu [...]

4035 14175

Open Access Review

An Overview of Circular Economy Approaches for Plastics

Received: 28 February 2025;  Published: 28 July 2025;  doi: 10.21926/rpm.2503011

Abstract

Plastic pollution has received worldwide attention due to its extensive environmental and health implications. The circular economy has emerged as a potential solution to plastic pollution. This overview comprehensively presents different plastic circular economy approaches and discusses their advantages, disadvantages, and implementation challenges. It highlights that the current plastic circular economy approaches primarily comprise mechanical recycling, chemical recycling, bio-based and biodegradable plastics, e [...]

3827 34115

Open Access Research Article

Development of Parametric Voronoi-Based Scaffolds for Trabecular Bone Tissue Replacement Using Additive Manufacturing

Received: 07 February 2025;  Published: 28 May 2025;  doi: 10.21926/rpm.2502010

Abstract

Tissue engineering is a technique for regenerating living tissue using portions of the patient's tissue, which are dissociated into cells and cultured on biological or synthetic supports before being transferred to the patient. In this context, the present study seeks to develop implant models (scaffolds) for replacing trabecular bone tissue, with requirements such as porosity and interconnected pores. All design development was aimed at the manufacturing of scaffolds using the material extrusion additive manufactu [...]

1536 7944

Open Access Review

Emerging Progress in Nanotechnological Influence on Polymeric Textile Finishing

Received: 13 January 2025;  Published: 27 May 2025;  doi: 10.21926/rpm.2502009

Abstract

Nanotechnology has revolutionized the textile industry by introducing innovative finishing techniques that enhance the durability and performance of textile materials and the application of nanoscale/nanoparticles/nanomaterials and processes to improve the properties and performance of textiles. The synergism of textile technology and nanotechnological advancements has propelled a paradigm shift, changed the narrative, and formed novel platforms for textile surface engineering at both atomically affiliated and mole [...]

3103 23419

Open Access Original Research

Quantitative Evaluations on Harmonic and Anharmonic Lattice Thermal Capacity of Polymers

Received: 28 December 2024;  Published: 22 May 2025;  doi: 10.21926/rpm.2502008

Abstract

So-called ‘Generalized Skettrup Model(s)’ (GSMs) of different (1D, 2D, 3D) spatial dimensionalities are used at simulations on temperature-dependent harmonic and anharmonic fractions of lattice thermal capacity of polyethylene and polypropylene with crystalline and/or amorphous atomic structures of limited spatial extents. Basic equations of the GSM slot in explicitly quantization effects of the single-particle and many-particle energy levels of spatially confined phonons. The harmonic lattice thermal c [...]

1172 6159

Open Access Review

Graphene Quantum Dots from Synthesis to Innovation for Advanced Optics and Bio-Optics Trends

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

Abstract

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 [...]

2844 12766

Open Access Review

A Review on Metal Additive Manufacturing - Types, Applications and Future Trends

Received: 01 October 2024;  Published: 10 February 2025;  doi: 10.21926/rpm.2501006

Abstract

Metal Additive Manufacturing (MAM) process has been established as an industrial process for customized and intricate metallic components. It is one of the growing technologies proving its potential in numerous fields by introducing the latest processing methods. The significant growth in this technology is partially fueled by its ability to manufacture parts that could be performance-beneficial and commercially utilizable in various industries. The adaptability of metal AM processes has prompted innovation across [...]

7697 67916

Open Access Review

Emerging Advances in 3-D & 4-D Printing of Polymeric Nanoarchitectures & Multifacet Applications

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

Abstract

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 [...]

2710 9430

Open Access Review

Novel In-Situ Synthesis Techniques for Cellulose-Graphene Hybrids: Enhancing Electrical Conductivity for Energy Storage Applications

Received: 20 September 2024;  Published: 21 January 2025;  doi: 10.21926/rpm.2501004

Abstract

This study investigates the hypothesis that diverse synthesis techniques can yield cellulose-graphene hybrids with tailored properties for specific applications, enabling advancements in flexible electronics, energy storage, environmental remediation, and biomedical devices. We examined and compared multiple synthesis methods, including chemical reduction, in-situ synthesis, green synthesis using natural reducing agents, solvent-assisted approaches, hydrothermal and solvothermal techniques, mechanical and chemical [...]

4374 16335

Open Access Review

Recent Developments in Synthesis Techniques and Microwave Absorption Performance of Materials Based on Molybdenum Disulfide (MoS2) with Metal Oxides: A Review

Received: 11 October 2024;  Published: 26 January 2025;  doi: 10.21926/rpm.2501003

Abstract

The widespread usage of various wireless equipment in many facets of life has significantly contributed to the severe pollution caused by electromagnetic radiation. Thankfully, scientists have created materials that can absorb microwave radiation and convert dangerous electromagnetic waves into other forms of energy, including heat energy. Many recent investigations have been published regarding developing materials that absorb microwaves with different constituents, morphologies, and architectures. Microwave-absor [...]

4261 25575

Open Access Original Research

Valorization of Agroindustrial Waste as Biosorbent of Lead (II) in Solution and its Reuse in the Manufacture of Building Bricks

Received: 24 October 2024;  Published: 10 January 2025;  doi: 10.21926/rpm.2501002

Abstract

Lead is a non-biodegradable toxic heavy metal. Biosorption is a simple, cost-effective and eco-friendly method for remediating lead-contaminated environments. Additionally, rice husk is a highly available residual biomass that can be used as a biosorbent. This study aimed to analyze the biosorption of Pb2+ using both natural and chemically treated rice husk and to evaluate the incorporation of the resulting biomass-contaminant residue into ceramic matrices to immobilize the removed Pb2+. Natural and alkaline-activa [...]

1300 5765

Open Access Editorial

Acknowledgment to Reviewers of Recent Progress in Materials in 2024

Received: 02 January 2025;  Published: 02 January 2025;  doi: 10.21926/rpm.2501001

Abstract

The editors of Recent Progress in Materials would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2024. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers can download a certificate of recognition directly from our submission system. Additionally, reviewers can sign up t [...]

850 3763

Open Access Original Research

Construction & Demolition Waste and Circular Economy: The Case Study of a Brazilian City

Received: 11 August 2024;  Published: 24 December 2024;  doi: 10.21926/rpm.2404029

Abstract

Construction and demolition waste (CDW) is a significant waste stream in Brazil. It represents 38.2% of the total CDW and MSW streams. The recycling of CDW in Brazil is estimated to be at least 7.2% by weight (collected CDW) or about 15% by volume (produced CDW). Therefore, only a tiny part of CDW is returned to construction activities. On the other hand, 48.9% of the total amount of the top fifty extracted minerals in the country is sand and gravel, which is used in the national construction industry. Considering [...]

2259 17550

Open Access Original Research

Mechanical Characterization of a Tunable 3-D Collagen-Hyaluronic Acid Hydrogel for Use in Cell Culture

Received: 28 June 2024;  Published: 17 December 2024;  doi: 10.21926/rpm.2404028

Abstract

Many cells demonstrate variances in behavior due to their cell culture environment. To provide a mechanically-tunable, tissue-like environment, a 3D hydrogel for cell culture was formulated using collagen (Col) and hyaluronic acid (HA) to help provide a system for studying these dynamic cellular responses in a soft-tissue environment. A design of experiments was organized to study the effects of collagen concentration, HA fragment size, and Col: HA mass ratio on the hydrogel mechanical properties. Mechanical charac [...]

1662 8672

Open Access Review

Viral/Non-Viral Vectors in DNA/RNA Delivery Technology

Received: 26 August 2024;  Published: 12 December 2024;  doi: 10.21926/rpm.2404027

Abstract

Viral and non-viral vectors for nucleic acids (DNA/RNA) therapeutics are important in development of pharmaceutical industries. Although viral vectors have shown significant impact in transfection of DNA/RNA, but numerus studies have shown that non-viral vectors are also effective for the safe and targeted delivery of DNA/RNA to exact location in the body with high percentage of efficacy, safety, and low-immunogenicity. It is also important to protect the nucleic acids from degradation and large-scale production ca [...]

2396 9984

Open Access Review

Current Advancements in the Behavior Analysis of EPDM Elastomers in Peripheral Applications of the Cathodic Side of PEMFC Systems

Received: 30 June 2024;  Published: 04 November 2024;  doi: 10.21926/rpm.2404026

Abstract

This review examines the latest developments in the study of how Ethylene Propylene Diene Monomer (EPDM) elastomers behave in peripheral applications of Proton Exchange Membrane Fuel Cells (PEMFCs), specifically on the cathodic side. The review highlights the crucial role of EPDM in maintaining the integrity and efficiency of PEMFCs in challenging conditions characterized by varying temperatures, humidity, and acidic environments. The study examines the impact of various additives and vulcanization procedures on EP [...]

1818 12432

Open Access Review

Research Progress in Enhancing Proton Conductivity of Sulfonated Aromatic Polymers with ZIFs for Fuel Cell Applications

Received: 22 June 2024;  Published: 04 November 2024;  doi: 10.21926/rpm.2404025

Abstract

The escalating global temperatures and their adverse effects underscore the growing imperative for the widespread adoption of clean fuels, notably hydrogen. Proton Exchange Membrane Fuel Cells (PEMFC) emerge as a pivotal green energy technology, facilitating electricity and water generation. The optimization of PEMFC efficiency hinges on the judicious selection and fabrication of polymer membranes. Within innovative materials, Zeolitic Imidazolate Frameworks (ZIFs) represent a novel subclass within the expansive fa [...]

2304 14648

Open Access Review

Emerging Trends in Engineering Polymers: A Paradigm Shift in Material Engineering

Received: 30 June 2024;  Published: 30 September 2024;  doi: 10.21926/rpm.2403024

Abstract

Emerging Trends in Engineering Polymers signify a pivotal transformation in material engineering, marking a departure from traditional materials towards innovative, multifunctional, and sustainable polymers. This review delineates the forefront of advancements in polymer materials, including high-performance, bio-based, biodegradable, innovative, and functional polymers. Highlighting their enhanced mechanical properties, thermal stability, and chemical resistance showcases these materials' pivotal role in driving t [...]

5875 46002

Open Access Review

Revolutionizing Infrastructure Development: Exploring Cutting-Edge Advances in Civil Engineering Materials

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

Abstract

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, [...]

3278 15201

Open Access Review

Nanomedicine: Pioneering a New Frontier in Neuro-Ophthalmology

Received: 23 April 2024;  Published: 29 August 2024;  doi: 10.21926/rpm.2403022

Abstract

Nanotechnology is one of the most promising fields of study, and it represents a pioneering leap in science and technology by the precise control over materials at the atomic and molecular level. This transformation affects numerous aspects of modern human life, including medicine, healthcare, electronics, computing, and energy storage. Nanotechnology has shown significant advancements in managing various health problems through different nano-formulations. These engineered nano-systems can be used as drug delivery [...]

1991 9135

Open Access Original Research

Obtaining of WC–Co- and WC–TiC–Co-Based Ultradispersive Alloys Modified with B4C–TiB2 Quasieutetic

Received: 21 March 2024;  Published: 26 August 2024;  doi: 10.21926/rpm.2403021

Abstract

Tungsten carbide WC-based materials characterized by high hardness and wear resistance have long been widely used in manufacturing cutting and mining tools. They are alloyed or modified with different ceramic phases to improve operational characteristics further. There are obtained the hard tungsten carbide–cobalt WC–Co and tungsten carbide–titanium carbide–cobalt WC–TiC–Co metal-ceramic alloys ultradispersed powders modified with quasieutectic ceramic alloy B4C–30wt.%TiB2 [...]

1984 14460

Open Access Original Research

Influence of Thermal Environment Conditions on Mechanical Properties of MEX Printed 17-4 PH Stainless Steel

Received: 18 February 2024;  Published: 22 August 2024;  doi: 10.21926/rpm.2403020

Abstract

This study investigates the influence of thermal environmental conditions during printing and their effects on the mechanical properties of material extrusion (MEX) 3D-printed 17-4 PH stainless steel. Various ambient temperatures and cooling behaviors were used during the printing process of the tensile specimens. Following DIN EN ISO 50125 and DIN EN ISO 6892, the study analyzes tensile strength, elongation and yield strength. The results demonstrate that the thermal environmental conditions affect both tensile an [...]

1063 7090

Open Access Original Research

Sustainable Concrete with Zero Carbon Footprint

Received: 15 April 2024;  Published: 09 August 2024;  doi: 10.21926/rpm.2403019

Abstract

This paper describes a method to use solely recycled and by-product materials as constituents to form concrete that can be used in buildings structural applications. As concrete is one of the most important materials in human civilization, where it is used widely in construction, cement and aggregate the main components of concrete cause an emission of large amounts of carbon dioxide, which is the main cause of global warming. The production of one tonne of cement, for example, causes the emission of about 800 kg o [...]

1573 11398

Open Access Original Research

Construction and Evaluation of a Modular Anthropomorphic Phantom of the Skull with an Exchangeable Specimen Jar to Optimize the Radiological Examination of Temporal Bone Pathology

Received: 26 March 2024;  Published: 25 July 2024;  doi: 10.21926/rpm.2403018

Abstract

To develop a modular anthropomorphic phantom to evaluate the performance of radiological techniques for detecting pathologies in the temporal bone region. A phantom was constructed using a human skull, temporal bone specimen, and 3D-printed contour of a human skull. The human skull was embedded in tissue-equivalent plastic, with a cavity to hold the plastic jars containing the exchangeable freshly frozen human temporal bones. Subsequently, stepwise introduction and examination of different clinicopathological scena [...]

1331 5952

Open Access Review

Impact of Pernicious Chemicals on Geopolymer and Alkali-Activated Composites Incorporated with Different Fiber Types: A Review

Received: 27 March 2024;  Published: 22 July 2024;  doi: 10.21926/rpm.2403017

Abstract

Over the past decade, developing geopolymer mixes to replace ordinary Portland Cement (OPC) composites has yielded positive results, leading to extensive research. The incorporation of fibers in geopolymers, besides impacting the mechanical properties, has also significantly impacted durability, mainly when dealing with the most pernicious forms of deterioration resulting from chloride attack, water penetration, sulfate attack, acid attack, as well as freeze-thaw, which occurred through chemical transgression. This [...]

1461 13729

Open Access Research Article

Spark Plasma Sintering of Cu-Ti-Ni Ternary Alloy: Microstructural, Thermal and Electrical Properties

Received: 28 December 2023;  Published: 01 July 2024;  doi: 10.21926/rpm.2403016

Abstract

High strength and good conductivity are both critical parameters for copper-based alloys for electrical and other technological applications. This study is aimed to produce copper alloys and metal matrix composites (MMCs) with enhanced physical properties. Cu-Ti-Ni ternary alloys and MMCs samples were sintered at 600 to 700°C using spark plasma sintering (SPS), with a heating rate of 100°C/minutes, uniaxial pressure of 50 MPa, and a holding time of 10 minutes. Scanning electron microscopy (FE-SEM) was used to exami [...]

1317 7073

Open Access Review

Review on Some Important Research Progresses in Biodegradable Plastics/Polymers

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

Abstract

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 [...]

2884 29909

Open Access Research Article

Development of the Stochastic Interpretation of Quantum Mechanics by E. Nelson. Derivation of the Schrödinger-Euler-Poisson Equations

Received: 10 November 2023;  Published: 26 June 2024;  doi: 10.21926/rpm.2402014

Abstract

The article aims to develop the stochastic interpretation of quantum mechanics by E. Nelson based on balancing the intra-systemic contradiction (i.e., antisymmetry) between “order” and “chaos”. For the set task, it is proposed to combine two mutually opposite system-forming principles: “the principle of least action” and “the principle of maximum entropy” into one, the “principle of averaged efficiency extremum”. In a detailed consideration of the averaged states of a chaotically wandering particle, the time-indepe [...]

1480 18705

Open Access Original Research

The Effect of Rake Angle and Cutting Edge Radius on the Orthogonal Cutting Process of Ti6Al4V Alloy

Received: 23 February 2024;  Published: 18 June 2024;  doi: 10.21926/rpm.2402013

Abstract

This paper investigates the effect of rake angle, α, cutting edge radius, r, and feed rate, f, on the cutting force and cutting zone temperature during orthogonal dry cutting of Ti6Al4V. A numerical model representative of the 2D orthogonal cutting process is developed using ABAQUS/Explicit software. Johnson-Cook, (JC) constitutive material model is used to describe material plasticity. JC damage model and energy-based fracture criterion are used to describe damage initiation and evolution. Using Minitab-19 softwar [...]

1737 9195

Open Access Research Article

Spin Entanglement – A Unifying Principle for Superconductors and Molecular Bonding

Received: 20 December 2023;  Published: 03 June 2024;  doi: 10.21926/rpm.2402012

Abstract

The spin-statistics theorem is generalized to include quantum entanglement. Specifically, within the context of spin entanglement, we prove that isotropically spin-correlated (ISC) states must occur in pairs. This pairing process can be composed of parallel or anti-parallel states. Consequently, the article proposes using ISC states as a unifying principle to explain better Bose-Einstein condensates, the theory of superconductivity, and molecular and atomic orbitals, all of which involve a pairing process. The theo [...]

1124 8719

Open Access Original Research

Enhancing Thermal, Viscoelastic, and Mechanical Properties of Silicone Rubber Matrix through Reinforcements for Use as a Medical Implant

Received: 14 December 2023;  Published: 03 May 2024;  doi: 10.21926/rpm.2402011

Abstract

The use of silicone rubber as an implant is limited due to its weak properties. In this study, the impact of various reinforcements, such as TiO2 or SiO2 nanoparticles, carbon, or polypropylene fiber micro reinforcements, on the mechanical, thermal, and viscoelastic properties of silicone rubber composites with RTV-4125 matrix was investigated. The composites were evaluated through several tests, including tensile, compression, FTIR, TGA, DMTA, and water adsorption tests. It was found that the composites' tensi [...]

2650 16741

Open Access Perspective

Whisker Bond: From Findings to Concept in Refractories

Received: 12 January 2024;  Published: 12 April 2024;  doi: 10.21926/rpm.2402010

Abstract

Ceramic bonds are conventionally formed during the burning of refractory bricks and by using pre-fabricated blocks or monolithic lining, which is characterized as the coalescence of the particles by liquid sintering. However, the whisker bond was discovered with the outstanding performance of unburnt periclase–spinel–Al bricks while substituting magnesia–chrome bricks in the chromium-free campaign of refractory lining of RH degassers. Thanks to the prominent effect of the whisker bond, such a refr [...]

1440 6596

Open Access Review

Review on the Development of Titanium Diboride Ceramics

Received: 02 January 2024;  Published: 03 April 2024;  doi: 10.21926/rpm.2402009

Abstract

Titanium diboride (TiB2) materials have garnered significant attention due to their remarkable comprehensive properties. They offer potential applications in high-temperature structural materials, cutting tools, armor, electrodes for metal smelting, and wear-resistant parts. However, due to the low self-diffusion coefficient, the TiB2 exhibits poor sinterability, excessive grain growth at elevated temperatures, and inadequate oxidation resistance, limiting its wide application. Therefore, many research works are de [...]

4156 25189

Open Access Review

A Review on Silk Fibers and Their Medical Applications

Received: 12 December 2023;  Published: 15 March 2024;  doi: 10.21926/rpm.2401008

Abstract

This mini-compilation study included the chemical structure, mechanical, thermal, and dimensional properties of silk fiber, its production process, pre-treatment, and biomedical applications from various experimental studies, which are compiled and summarized. The silk fiber should have a degumming process before using biomedical applications. The 25% concentration for Na2CO3 in ethanol solution (80%) as a coagulant chemical with a salt such as LiB2 (9 M) at a temperature of 98°C for 45 minutes at pH between 6 [...]

13423 30228

Open Access Research Article

Capillary Suction Properties of Mortar Made with Recycled Plastic Aggregates Elaborated from Waste Electrical and Electronic Equipment

Received: 18 October 2023;  Published: 15 March 2024;  doi: 10.21926/rpm.2401007

Abstract

It is possible to revalue the plastic fraction from WEEE using it as a recycled aggregate (RA) in cement mortars. However, this feasibility depends on elaborating a granular material via a core-shell strategy to stabilize the potential contaminants. The core is a plastic particle, and the shell is a cement, fillers, and activated carbon mixture. Due to the hydrophilic characteristics of the shell and the presence of interstitial sites generated by the use of the RA, it is necessary to study the wetting properties o [...]

1048 5594

Open Access Review

Self-Healing Concrete Techniques and Technologies and Applications

Received: 30 April 2023;  Published: 21 February 2024;  doi: 10.21926/rpm.2401006

Abstract

The main weakest point of concrete is its exposure to cracks, and concrete structure repair is expensive, especially for infrastructure maintenance, which is difficult to access. The ability of self-healing concrete (SHC) to successfully heal fractures without the assistance of humans has received much attention since it increases operational life and lowers maintenance expenses. This paper reviews various techniques and technologies of autogenous and autonomous self-healing concrete. Much more attention is given t [...]

8038 76380

Open Access Original Research

Do Magnetic Monopoles Exist?

Received: 21 October 2023;  Published: 07 February 2024;  doi: 10.21926/rpm.2401005

Abstract

In this paper, we continue our previous work by discussing the consequences of curvature in spacetime caused by the presence of mass and the implications of this. We address the question raised by Dirac regarding the impact of a magnetic monopole on the quantum world. We discuss quantization concerning the solid angles observed, which may have a connection with a magnetic monopole.

1891 12842

Open Access Original Research

Elementary Collective Effects in Systems Containing Small Fermion-Numbers

Received: 14 October 2023;  Published: 06 February 2024;  doi: 10.21926/rpm.2401004

Abstract

Collective effects are a typical nuclear feature that refers to the behavior of a group of N fermions (protons and neutrons) within the atomic nucleus. Our interest lies in light nuclei only. Thus, we consider here, using the Lipkin model, a small-N fermion system at low-temperature T and discover -collective phenomena. Our fermion-model simplicity allows one to gain insight into collective fermion behavior. We focus attention, for N<20, on several quantifiers. These include standard ones related to thermal [...]

1478 6134

Open Access Review

Modified Organized Systems by Incorporation of Carbon Allotropes and Derivatives for Electron Shuttle, ET, FRET, MEF, and Quantum Biology Coupling

Received: 14 October 2023;  Published: 31 January 2024;  doi: 10.21926/rpm.2401003

Abstract

This communication was brief to show how high conjugated carbon-based structures and carbon allotropes could participate as electron shuttles, semiconductors, quantum emitters, and Optoelectronic processors within confined nanostructured organized systems. In particular, it was focused on nanoassemblies such as vesicles, micelles, and lipidic nanoparticles and incorporated insights from other types of nanomaterials that could afford to develop new organized systems. In these cases, the term organized system was use [...]

1221 7157

Open Access Review

An Overview of Treatments for Ultraviolet Quenching Substances (UVQS) and Per- and Polyfluoroalkyl Substances (PFAS) Removal from Landfill Leachate

Received: 15 September 2023;  Published: 24 January 2024;  doi: 10.21926/rpm.2401002

Abstract

Organics found in landfill leachate (humic acids, fulvic acids, and hydrophilic fraction) have a solid ability to absorb ultraviolet (UV) radiation, which negatively affects UV disinfection; leachate ultraviolet quenching substances (UVQS) can, therefore, have a significant impact on the cotreatment of landfill leachate and sewage in wastewater treatment plants. On the other hand, per- and polyfluoroalkyl substances (PFAS), which pose potential risks to the environment and human health, commonly exist in landfill l [...]

2205 11737

Open Access Editorial

Acknowledgment to Reviewers of Recent Progress in Materials in 2023

Received: 04 January 2024;  Published: 05 January 2024;  doi: 10.21926/rpm.2401001

Abstract

The editors of Recent Progress in Materials would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2023. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers can download a certificate of recognition directly from our submission system. Additionally, reviewers can sign up t [...]

934 4638

Open Access Review

Quantum Semiconductors Based on Carbon Materials for Nanophotonics and Photonics Applications by Electron Shuttle and Near Field Phenomena

Received: 16 September 2023;  Published: 26 December 2023;  doi: 10.21926/rpm.2304037

Abstract

This review intended to resume key Research reports and publications that open many themes and topics related to Carbon-based semiconductors and Quantum emitters. The Design and synthesis of highly pure materials such as Graphene, Carbon Nanotubes, fullerenes, and other Carbon-based allotropes were shown. They presented their most important and promising properties concerning new studies and developments in photonics. Carbon-based Quantum dots, semiconductors, and higher sized Nanoplatforms allowed us to discuss fu [...]

1415 9525

Open Access Editorial

Potential Applications of Nanomedicine

Received: 03 December 2023;  Published: 05 December 2023;  doi: 10.21926/rpm.2304036

Abstract

EditorialPotential Applications of NanomedicineHossein Hosseinkhani *Innovation Center for Advanced Technology, Matrix HT, Inc., New York, NY 10019, USA; E-Mail: hh@matrix-inc.com* Correspondence: Hossein Hosseinkhani; E-Mail: hh@matrix-inc.comRecent Progress in Materials2023, volume 5, issue 4doi:10.21926/rpm.2304036Received: December 03, 2023Accepted: December 04, 2023Published: December 05, 2023

1407 6320

Open Access Original Research

Stress Analysis and Life Prediction of a Ceramic Matrix Composite Vane Using a Micromechanics-Based Approach

Received: 06 September 2023;  Published: 01 December 2023;  doi: 10.21926/rpm.2304035

Abstract

The results of stress analysis of a ceramic matrix composite (CMC) vane using a physics-based model developed for two-dimensional woven CMCs are presented. The model considers the inherent defects and micromechanical damage in woven CMCs along with time-dependent deformation of the constituents. Predictions include damage state under general load conditions and the global deformation response of the vane. Strain-gage data from burst tests are compared to strain predictions obtained using the model. Results from tim [...]

1915 11437

Open Access Short Review

Versatile Surface Chemistry of Carbon-Based Nanoplatforms by Covalent Bonding, Non-Covalent Linking, Crosslinking, and Self-Assembling

Received: 28 July 2023;  Published: 15 November 2023;  doi: 10.21926/rpm.2304034

Abstract

This mini-review discussed the best-known chemical and synthetic methodologies used in the last years to modify carbon allotropes, with an interest in nanotechnology. In this perspective, chemistry with optoelectronics applications and recent trends within bio-applications focusing mainly on graphene and its derivatives were considered. So, the mini-review intended to focus on methodologies to add functional groups with varied reactivities, polymer chemistry, and nanoscale control. These methodologies provide insig [...]

1492 8983

Open Access Original Research

Mesoscale Modeling of Extrusion and Solidification During Material Extrusion Additive Manufacturing

Received: 22 August 2023;  Published: 25 October 2023;  doi: 10.21926/rpm.2304033

Abstract

In this work, we apply a multiphysics approach to fused deposition modeling to simulate extrusion and solidification. Restricting the work to a single line scan, we focus on the application of polylactic acid. In addition to heat, momentum and mass transfer, the solid/liquid/vapor interface is simulated using a front-tracking, level-set method. The results focus on the evolving temperature, viscosity, and volume fraction and are cast within a set of parametric studies, to include the printing and extrusion speed, a [...]

1857 9115

Open Access Original Research

Pyrethrin Type Compounds from the Municipal Solid Waste Ghazipur Landfill Inert Soil as Brain and Cancer 5-HT Receptor Binding Agents

Received: 17 June 2023;  Published: 01 September 2023;  doi: 10.21926/rpm.2303032

Abstract

The Inert soil obtained from the Ghazipur Municipal Solid Waste landfill located in East Delhi, India has been used as the starting material for the work described in this paper. This mountain-like monster is often in the news for its bad smell, pollution of the groundwater in the area from its leachates, and the occasional fires in it endangering the lives of the people living nearby. Landfills produce many greenhouse gases (CO2, CH4, CO, HCHO, H2S, and NH3) which are poisonous and cause environmental pollution in [...]

1442 8300

Open Access Review

Review on Material Performance of Carbon Nanotube-Modified Polymeric Nanocomposites

Received: 21 March 2023;  Published: 16 August 2023;  doi: 10.21926/rpm.2303031

Abstract

The chemically functionalized carbon nanotubes (f-CNTs) and hydrogen bonding modified polymer composites (CPCs) exhibit unique chemical, mechanical, electrical, and thermal properties and are emerging as promising materials to achieve extraordinarily high electrical and thermal conductivity, lightweight and anticorrosion, superior strength and stiffness for potential applications in the aerospace and automotive industries, energy conversion, and optical and electronic devices, therefore, attracting considerable res [...]

3134 19103

Open Access Review

Insights Focused on Hybrid Graphene Modifications within the Nanoscale for Opto-Electronics Perspectives

Received: 26 May 2023;  Published: 04 August 2023;  doi: 10.21926/rpm.2303030

Abstract

This brief letter presents this Special Issue nominated as “Hybrid Graphene-based Materials: Synthesis, Characterization, Properties, and Applications”. This intends to show and discuss the main properties of Graphene and its derivatives; and how it could be synthesized, modified and tuned for Optics, Electro-Optics, Electronics, and Quantum characteristics. In this context, the synthesis and chemical modifications were highlighted for the design of Hybrid composites, platforms. In this context, it was afforded to [...]

1463 8236

Open Access Original Research

Behavior of RC Buildings under Blast Loading: Case Study

Received: 28 April 2023;  Published: 27 July 2023;  doi: 10.21926/rpm.2303029

Abstract

In recent years, regional wars and terror activities have caused blast-loading effects on reinforced concrete buildings, resulting in catastrophic human and material damage. When a building is exposed to a blast load, a very high air pressure affects the building within a very short duration. To decide on the reconstruction or retrofit of a building exposed to blast loading, the behavior of the building under blast loading should be investigated. In this paper a case study of a RC building exposed to blast loading [...]

1633 11976

Open Access Original Research

Detection of Anomalies in Additively Manufactured Metal Parts Using CNN and LSTM Networks

Received: 10 January 2023;  Published: 26 July 2023;  doi: 10.21926/rpm.2303028

Abstract

The process of metal additive manufacturing (AM) involves creating strong, complex components by using fine metal powders. Extensive use of AM methods is expected in near future for the production of small and medium-sized batches of end-use products and tools. The ability to detect loads and defects would enable AM components to be used in critical applications and improve their value. In this study, the Surface Response to Excitation (SuRE) method was used to investigate wave propagation characteristics and load [...]

1664 11664

Open Access Original Research

Development of Environmentally Ecofriendly Composites Based on Polypropylene/Bahia Beige Waste: Effect of Reinforcement Content on Physical, Mechanical, Chemical, and Microstructural Properties

Received: 22 May 2023;  Published: 18 July 2023;  doi: 10.21926/rpm.2303027

Abstract

This article presents the development and characterization of environmentally friendly composites comprising polypropylene (PP) reinforced with Bahia Beige (BB) marble waste. The composites were prepared using different PP/BB weight ratios and analyzed for their chemical, physical, mechanical, microstructural, and thermal properties. X-ray fluorescence (XRF) analysis revealed the composition of BB, which exhibited a significant concentration of CaO, indicating the presence of calcite and other oxides. X-ray diffrac [...]

1443 8988

Open Access Research Article

Spontaneous Magnetization in the Finite-Size Two-Leg Ising Ladder in the External Magnetic Field

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

Abstract

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 [...]

2299 10732

Open Access Original Research

Micromechanics-Based Modeling of SiC/SiC Ceramic Matrix Composites and Structures

Received: 23 January 2023;  Published: 20 June 2023;  doi: 10.21926/rpm.2302025

Abstract

The behavior and response of ceramic matrix composites (CMCs), in particular silicon carbide fiber reinforced silicon carbide matrix (SiC/SiC), is affected by many factors such as variation of fiber volume fraction, residual stresses resulting from processing of the composites at high temperature, random microstructures, and the presence of matrix flaws (e.g., voids, pores, cracks etc.) as well as general material nonlinearity and heterogeneity that occurs randomly in a composite. Residual stresses arising from the [...]

2173 14174

Open Access Original Research

Efficacy of Zinc Pyrithione as A Novel Anti-Bacterial Coating Agent

Received: 02 May 2022;  Published: 15 June 2023;  doi: 10.21926/rpm.2302024

Abstract

Zinc pyrithione (ZPT) is used to prevent microbial degradation and deterioration of manufacturing starting materials such as plastics, polymers, and latexes. The main objective of this study was to evaluate the anti-bacterial properties of ZPT. Currently, there is insufficient data on the effect of ZPT on viability of commonly encountered bacterial pathogens. We tested the efficacy of ZPT manufactured in the form of film rolls as an anti-bacterial protective layer by using the ASTM–recommended protocol on gro [...]

2296 15262

Open Access Review

Nanomaterials with Plant or Animal Origin for Greener Biodelivery and Biosensor Applications: A Review

Received: 26 October 2022;  Published: 12 June 2023;  doi: 10.21926/rpm.2302023

Abstract

Nanomaterials are now used in almost every field of science; as conductors and electrodes in electronics, as nanodelivery systems in health screenings and drug delivery, as nanofibrils in filtering and textile industry, as nanoparticles in biosensor fabrication for toxin and pathogen detection, and in packaging materials in the food industry. Synthetic materials and plastics accumulate in the environment causing increasing health concerns for their use in food and pharmaceutical products. Therefore, researchers now [...]

1703 8654

Open Access Technical Note

Towards Femtoscan-Assisted Analysis of Liquid Crystal Self-Organization on Different Polymer and Glass Surfaces for Lab-on-a-Chip and Lab-on-a-Dish Applications, Including Optofluidic and Flexoelectric Ones

Received: 27 December 2022;  Published: 29 May 2023;  doi: 10.21926/rpm.2302022

Abstract

In this paper, starting with an introductory review of the applications of liquid crystals and polymer-dispersed liquid crystal systems in (bio)sensors and microfluidics, the possibilities of visualizing self-organization products of liquid crystalline media or field-induced instabilities of liquid crystalline systems are considered. In particular illustrated cases, it is proposed to use FemtoScan software-containing metrological complexes to visualize instabilities in liquid crystalline systems and products of sel [...]

2037 8822

Open Access Original Research

Low-Velocity Impact Resistance of Glass Laminate Aluminium Reinforced Epoxy (GLARE) Composite

Received: 16 June 2022;  Published: 12 May 2023;  doi: 10.21926/rpm.2302021

Abstract

This study intends to determine the behavior of glass laminate aluminum-reinforced epoxy (GLARE) and glass fiber-reinforced polymer (GFRP) composites under a low-velocity impact test. Experimental tests and numerical simulations are considered for this investigation. All samples are made by the hand lay-up method. Moreover, specimens are produced with a 7075-T6 aluminium sheet with a 0.5 mm thickness, resin 3001, and E-glass fiber. The drop weight test performs the low-velocity impact at 6.7 J and 10 J impact energ [...]

1730 12739

Open Access Review

3D Printing of MXenes-Based Electrodes for Energy Storage Applications

Received: 31 January 2023;  Published: 08 May 2023;  doi: 10.21926/rpm.2302020

Abstract

Energy storage devices (ESD) including batteries, and supercapacitors are becoming progressively imperative in the transition to a renewable energy future, as they enable the integration of intermittent renewable sources into the grid and provide backup power during outages. There are already reviews available on various energy storage materials and systems. However, the challenges in the choice of suitable materials and fabrication technology are yet to establish for the commercialization of affordable and efficie [...]

3023 17204

Open Access Original Research

Experimental and Analytical Studies of an Ultra-high Performance Concrete Beam Using Carbon Fiber Reinforced Polymer Bars

Received: 10 September 2022;  Published: 04 May 2023;  doi: 10.21926/rpm.2302019

Abstract

Infrastructure degradation attributable to concrete deterioration and corrosion of reinforcing steel has been a long-standing challenge to the owners and engineers. This problem becomes more evident when concrete structures are subject to aggressively corrosive environments. The use of advanced materials such as ultra-high performance concrete (UHPC) and carbon fiber reinforced polymer (CFRP) bars has a strong potential to overcome this challenge and help build new infrastructure that is durable and sustainable. Ho [...]

1428 9775

Open Access Correction

Correction: Non Solved Contemporary Scientific Problems of Non-Conventional Bio-Surfaces Lubrication. Recent Progress in Materials 2023; 5(1): 013

Received: 26 April 2023;  Published: 27 April 2023;  doi: 10.21926/rpm.2302018

Abstract

CorrectionCorrection: Non Solved Contemporary Scientific Problems of Non-Conventional Bio-Surfaces Lubrication. Recent Progress in Materials 2023; 5(1): 013Krzysztof Wierzcholski *, Jacek GospodarczykWSG Bydgoszcz University Garbary 2, Bydgoszcz, Poland; E-Mails: Krzysztof.wierzcholski@wp.pl; jacek.gospodarczyk@byd.pl* Correspondence: Krzysztof Wierzcholski; E-Mail: Krzysztof.wierzcholski@wp.plAcademic Editor: Hossein HosseinkhaniSpecial Issue: Non-Conventional Hydrodynamic Lubrication for Biological and Mechanic [...]

1072 5680

Open Access Original Research

Physiological Response of a Natural Central Incisor Tooth to Various Loading Conditions: A 3D Finite Element Study

Received: 05 May 2022;  Published: 24 April 2023;  doi: 10.21926/rpm.2302017

Abstract

This study evaluates the influence of different loading angles and the area of loading on the ensuing stress distribution and the physical response of a natural central incisor tooth, using a 3D finite element analysis. The CAD model of the incisor tooth assembly (including enamel, dentin, periodontal ligament, pulp, gingiva and jaw bone) was subject to an external (chewing) load of 100 N, over four different areas and at four different angles along the vertical. It was observed that the tooth experiences high von- [...]

1107 8642

Open Access Research Article

Evaluating the Performance of Hollow Core Slabs (HCS)-Concrete and Simplifying Their Implementation

Received: 02 March 2023;  Published: 19 April 2023;  doi: 10.21926/rpm.2302016

Abstract

The largest proportion of the material used in multistory buildings, and thus its carbon impact, is attributed to their slabs being the main contributor of weight. Because of their high strength and concrete self-weight reduction, composite beams with hollow-core slabs were created for their technical and economic benefits, making this system inexpensive and with a reduced environmental impact, thereby lowering carbon emissions. Geometrically, the hollow slab has a sequence of T and L form pieces on both sides. Hol [...]

3306 17532

Open Access Original Research

Effect of Heat Treatment on Sliding Wear Resistance of Hybrid Aluminum Matrix Composite

Received: 22 December 2022;  Published: 12 April 2023;  doi: 10.21926/rpm.2302015

Abstract

Composite materials with aluminum as matrix material have a wider amplitude of large-scale applications in engineering. Some salient features of aluminum matrix composites are, low density, low thermal coefficient of performance and low weight and high strength. Among the various series of aluminum alloy, Al6061 have been widely used by researchers due to its outstanding properties particularly as they are heat treatable. Aluminum 6061 alloys have been reinforced with various particulate reinforcements such as sili [...]

1376 8772

Open Access Original Research

7Li Diffusion in Thin Disks of Single-Crystal Garnet LLZO-Ta Studied by PFG-NMR Spectroscopy

Received: 24 January 2023;  Published: 03 April 2023;  doi: 10.21926/rpm.2302014

Abstract

Pulsed field-gradient (PFG) NMR spectroscopy was applied to thin disk samples (0.5, 1 and 2 mm thick, 4 mm diameter) of LLZO-Ta (Li6La3Zr1.5Ta0.5O12) single crystal. We have measured the diffusion of 7Li in thin pellets (0.5 to 3 mm thick) of NASICON-type LAGP powder and found that the Li+ diffuses preferentially in the thicker direction. In this study, we placed 1 mm thick, 4 mm diameter disk-shaped single crystals vertically, i.e., parallel to the PFG direction. We found that 7Li ions diffuse similarly as in rod- [...]

4638 16377

Open Access Research Article

Non Solved Contemporary Scientific Problems of Non-Conventional Bio-Surfaces Lubrication

Received: 19 December 2022;  Published: 27 March 2023;  doi: 10.21926/rpm.2301013

Abstract

This paper presents new non solved, scientific research directions and their applications in contemporary non-conventional lubrication problems of the bio-surfaces domain. Here are described new research scientific trends and research problem solutions of hydrodynamic lubrication for living tissue, human skin and human cartilage joints surfaces. At first in introduction is described the state of the art, a new purpose of anticipate research and the bio-tribology connections with other scientific domains are documen [...]

1151 7809

Open Access Original Research

Mechanics of ABS Polymer under Low & Intermediate Strain Rates

Received: 24 January 2023;  Published: 16 March 2023;  doi: 10.21926/rpm.2301012

Abstract

Thermoplastics polymers like Acrylonitrile Butadiene Styrene (ABS) are often reinforced with nano/micro reinforcements to enhance their mechanical, thermal and electrical properties. However, the viscoelastic nature of these polymers results in their strong dependence on the applied strain rate and temperature sensitivity, leading to their characterization complexity. Hence it is paramount to study the strain rate-dependent mechanics of neat ABS. In this study, the effect of strain rate and temperature on Young’s m [...]

3076 16965

Open Access Retraction

Retraction: Roy S. Performance of Grouted Coupler Embedded in Reinforced Concrete ABC Bridge Pier at Vehicle Impact. Recent Progress in Materials 2023; 5(1): 001

Received: 28 February 2023;  Published: 28 February 2023;  doi: 10.21926/rpm.2301011

Abstract

RetractionRetraction: Roy S. Performance of Grouted Coupler Embedded in Reinforced Concrete ABC Bridge Pier at Vehicle Impact. Recent Progress in Materials 2023; 5(1): 001Recent Progress in Materials Editorial OfficeLIDSEN Publishing Inc., 2000 Auburn Drive, One Chagrin Highlands, Suite 200, Beachwood, OH, USA; E-Mail: rpm@lidsen.com Recent Progress in Materials2023, volume 5, issue 1doi:10.21926/rpm.2301011Received: February 28, 2023Accepted: February 28, 2023Published: February 28, 2023

943 5301

Open Access Interview

An Interview with Assoc. Prof. Carlo Santulli

Received: 26 February 2023;  Published: 27 February 2023;  doi: 10.21926/rpm.2301010

Abstract

InterviewAn Interview with Assoc. Prof. Carlo SantulliRecent Progress in Materials Editorial OfficeLIDSEN Publishing Inc., 2000 Auburn Drive, One Chagrin Highlands, Suite 200, Beachwood, OH, USA; E-Mail: rpm@lidsen.com Recent Progress in Materials2023, volume 5, issue 1doi:10.21926/rpm.2301010Received: February 26, 2023Accepted: February 26, 2023Published: February 27, 2023

995 5451

Open Access Research Article

Accounting for the Influence of Heat-Moisture Treatment Mode When Designing Concrete Composition

Received: 12 January 2023;  Published: 24 February 2023;  doi: 10.21926/rpm.2301009

Abstract

The article proposes a method that considers the parameters of heat and moisture treatment of concrete when designing its composition. Based on the analysis of experimental data, formulas are proposed that allow taking into account the type and characteristics of cement, the characteristics of aggregates, the effect of temperature and duration of steaming, and the water-cement ratio. Graphs and nomograms have been obtained, which makes it possible to simplify the calculation procedure according to the proposed meth [...]

1366 7402

Open Access Review

Advances in Quantum Properties of Graphene and Derivatives Applied to Functional Nanomaterials and Metamaterials

Received: 30 December 2022;  Published: 13 February 2023;  doi: 10.21926/rpm.2301008

Abstract

In the present work we describe the most important quantum properties of graphene and derivatives recently published. We discuss how these properties were incorporated into varied hybrid materials such as substrates for specific tuning of matter to track varied quantum signals. Their potential applications were analyzed from nanomaterial and nanotechnology. In particular graphene, its derivatives and other carbon-based allotropes were chosen due to their special chemical structure and properties from the nanoscale [...]

1710 11623

Open Access Original Research

Study of Recycled Spent Coffee Grounds as Aggregates in Cementitious Materials

Received: 29 September 2022;  Published: 16 January 2023;  doi: 10.21926/rpm.2301007

Abstract

Most spent coffee grounds (SCGs), a byproduct of brewing coffee, are buried in landfill sites, and their decomposition produces significant greenhouse gases. As the recent warming of the Earth’s climate has made it imperative that industries reduce greenhouse gas emissions, the present study investigates the viability of recycling SCGs for use as a partial replacement of aggregates in concrete materials. Cement mortar samples with a fixed cement-to-water ratio and varying amounts of SCGs were fabricated and tested. [...]

2698 30344

Open Access Review

Reuse of Sawdust in Developing Countries in the Light of Sustainable Development Goals

Received: 02 September 2022;  Published: 12 January 2023;  doi: 10.21926/rpm.2301006

Abstract

The several furniture-making phases, from cutting to processing to polishing, produce a significant volume of sawdust of differing grades. The extraction and disposal of such waste in developing countries with no established or sustainable methods is an increasing problem, frequently posing environmental challenges. Sawdust is one of the most underused wood waste portions, with mounds dispersed around the region, detracting from its visual appeal and causing other ecological concerns. This study investigated potent [...]

4589 645452

Open Access Review

The Relation between Environmental Risk Analysis and the Use of Nanomaterials in the Built Environment Sector: A Circular Economy Perspective

Received: 02 August 2022;  Published: 11 January 2023;  doi: 10.21926/rpm.2301005

Abstract

Nowadays, the challenge of climate change and “ecological transition” is substantially an “energy challenge” for every city, which is supposed to become as “energetically self-sufficient” as possible. The construction sector is one of the main contributors to the effects of climate change, starting from the production of materials to the use phase of buildings to their demolition. Recent innovations in sustainable/circular design are related to using “new materials." According to this perspective, nanomaterials are [...]

1940 10216

Open Access Case Report

Influence of Wetting-Drying Cycles on Wood Behaviour of Coastal Pedestrian Walkways

Received: 30 September 2022;  Published: 11 January 2023;  doi: 10.21926/rpm.2301004

Abstract

In the context of inspection and maintenance actions for beach walkways in the North of Portugal, some samples of wood used in their construction were collected – the Pinus sylvestris wood, widely applied in the country. The sustainability of the beach walkways over natural coastal areas is very dependent on their material durability. One of the main problems of the timber used to build those structures is its behavior under wet-drying cycles. For that reason, this work aimed to simulate the effects of weathering o [...]

1503 10190

Open Access Review

Application of Finite Element Method for Mechanical Characterization of Wood and Reconstituted Lignocellulosic-Based Composites – A Review

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

Abstract

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 [...]

2615 16786

Open Access Editorial

Acknowledgment to Reviewers of Recent Progress in Materials in 2022

Received: 04 January 2023;  Published: 04 January 2023;  doi: 10.21926/rpm.2301002

Abstract

The editors of Recent Progress in Materials would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2022. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers receive a voucher entitling them to a discount on their next LIDSEN publication and can download a certificate of re [...]

956 4952

Open Access Original Research

Retracted: Performance of Grouted Coupler Embedded in Reinforced Concrete ABC Bridge Pier at Vehicle Impact

Received: 27 September 2022;  Published: 03 January 2023;  doi: 10.21926/rpm.2301001

Abstract

Increased occurrence of dynamic loading on bridge piers caused by seismic, blast and vehicular impact incidences have been increasingly reported. Statistical data shows that while seismic and blast have received significant attention in the literature despite the frequency of occurrence of vehicular impact is remarkably higher. Unfortunately, pier damage caused by high velocity vehicle impact contemplates a little consideration. With the newer construction methods like accelerated bridge construction (ABC) and its [...]

1477 9041

Open Access Review

A Review of Various Treatment Methods for the Removal of Dyes from Textile Effluent

Received: 15 October 2022;  Published: 30 December 2022;  doi: 10.21926/rpm.2204028

Abstract

Wastewater generated by the textile industry has been a major environmental concern for a long. Production of fiber involves various steps and uses a lot of chemicals, dyes, and water. Therefore, the effluent produced from the textile industry needs proper purification before discharging into the water body. The current review summarizes various physical and chemical methods like ion exchange, coagulation-flocculation, membrane separation, membrane distillation, oxidation, ozonation, etc., for wastewater treatment. [...]

5984 40059

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