by Duc Duy Huynh  , Hoang Phuc Nguyen  , Tran Quoc Thang Nguyen  , Thi Hong Nga Pham  , Quan Anh Pham  , Thi Van Anh Duong  , Van Huong Hoang  , Xuan Tien Vo  and Vinh Tien Nguyen

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

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 t [...]

by Yasmin Cherni  , Ridha Elleuch  , Cristian Botta  , Luca Cocolin  , Amjed Kallal  , Ismail Trabelsi  and Lobna Elleuch

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

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 [...]

by Taofiq O. Mohammed  , Mohammad Zunaied Bin Harun  , Jian Liu  and Ebenezer O. Fanijo

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

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 [...]

by Mahyar Vefaghi  , Hediyeh Rezaei Sedehi  and Omid Ashkani

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

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 [...]

by Kuok Ho Daniel Tang

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

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 biode [...]