by Marcos Lacasa-Cazcarra

Received: 31 July 2024;  Published: 25 March 2025;  doi: 10.21926/rpse.2501005

The main aim of this work is to analyze the impact of the National Minimum Wage (NMW) on wealth redistribution in Spain during the 2001-2021 period. This research addresses a fundamental question: Does increasing the minimum wage effectively reduce income inequality and contribute to a more equitable wealth distribution without negatively impacting overall economic growth and employment? Using a complete statistical census provided by the Spanish Tax Administration Agency, this study examines how the increase in th [...]

by Recent Progress in Science and Engineering Editorial Office

Received: 19 March 2025;  Published: 19 March 2025;  doi: 10.21926/rpse.2501004

by Babkir Ali  and Ahmed Gamil

Received: 16 November 2024;  Published: 10 March 2025;  doi: 10.21926/rpse.2501003

Carbon capture and storage (CCS) technology mitigates greenhouse gas (GHG) emissions. However, comprehensive studies assessing the sustainability of coal-based power generation (CBPG) with CCS remain limited. This study focuses on developing comparative sustainability indicators across the entire life cycle of CBPG integrated with CCS technology. Sixty-six pathways were analyzed after establishing five sustainability indicators for each. These indicators were standardized per megawatt-hour (MWh) of energy, encompas [...]

by Abel Kolawole Oyebamiji  , Ifeoluwa Samson Ajayi  , Faith Eniola Olujinmi  , Godwin O. Olujinmi  , Sunday A. Akintelu  , Emmanuel T. Akintayo  , Cecilia O. Akintayo  and Oluwakemi Ebenezer

Received: 22 October 2024;  Published: 06 March 2025;  doi: 10.21926/rpse.2501002

The biochemical properties of metal complexes containing benzo hydrazide Schiff base have been reported by numerous researchers worldwide in various ways. In this work, the evaluation of biochemical roles of the metal complexes with benzo hydrazide Schiff base activity as anti-gram positive and gram-negative bacteria, as well as antifungal agents, were observed. The use of various techniques, including the induced fit docking methodology, the density functional theory method, and pharmacokinetics investigations wit [...]

by Carlos Armenta-Déu

Received: 20 September 2024;  Published: 20 January 2025;  doi: 10.21926/rpse.2501001

This work focuses on designing a control unit for improving Proton Exchange Membrane Fuel Cell (PEMFC) performance powering electric vehicles when operating in variable atmospheric pressure conditions, a current situation in mountainous countries with sudden changes in road altitude. The paper studies and analyzes the PEM fuel cell behavior working with hydrogen supply from a pressurized tank and oxygen input from atmospheric air supply in journeys with continuous variation of road level due to the orography. The w [...]

by Jonathan K Sinclair  , Lauren Baker  and Lindsay M Bottoms

Received: 20 April 2026;  Published: 30 September 2026;  doi: 10.21926/rpn.2603024

Poor sleep and insomnia are prevalent and carry substantial health and societal costs. Tart cherry (Prunus cerasus) contains polyphenols and melatonin and has been proposed as a dietary strategy to support sleep. This systematic review and meta-analysis synthesised evidence from randomised controlled trials (RCTs) evaluating the effects of tart cherry supplementation on sleep quality and biomarkers linked to inflammatory and melatonin-related pathways. PubMed, Scopus, and Web of Science were searched from inception [...]

by Taiwo Ayodele Aderinola  , Uche Capulet Anyaiwe  and Sinmiloluwa Esther Ogunbowale

Received: 14 April 2026;  Published: 23 September 2026;  doi: 10.21926/rpn.2603023

This study evaluates the potential of composite flours made from cassava, sorghum residue, and garden egg (both ripe and unripe) to create a nutritionally enhanced doughmeal. Seven flour blends were formulated: A (100% cassava), B (95% cassava, 2.5% sorghum residue, 2.5% ripened garden egg), C (95% cassava, 2.5% sorghum residue, 2.5% unripened garden egg), D (90% cassava, 5% sorghum residue, 5% ripened garden egg), E (90% cassava, 5% sorghum residue, 5% unripened garden egg), F (85% cassava, 7.5% sorghum residue, 7 [...]

by Taiwo Ayodele Aderinola  , Uche Capulet Anyaiwe  and Blessing Oluwanifemi Adeyemi

Received: 14 April 2026;  Published: 18 September 2026;  doi: 10.21926/rpn.2603022

Yam is a widely consumed staple food but has a high carbohydrate content and limited functional attributes. This study evaluated the nutritional, antioxidant, and in vitro antidiabetic properties of doughmeals produced from yam and tigernut flour blends at ratios of 95:5, 90:10, 85:15, 80:20, and 100% yam (control). Results showed that tigernut inclusion significantly improved the nutritional profile, with protein increasing from 8.09% to 11.81% and crude fiber rising from 0.24% to 1.14%. Ash and fat contents also [...]

by Kevin Liu  , Wenbiao LU  and Kaiyu Xiao

Received: 06 April 2026;  Published: 09 September 2026;  doi: 10.21926/rpn.2603021

Trace minerals (Cu, Fe, Mn, Zn, I and Se) are essential components of numerous enzymes thus indispensable for metabolism, immunity, growth and reproduction. Inorganic forms of these minerals (ITM) are widely used in the poultry industry often with much in excess in order to cover various uncertainties, resulting in not only oxidative deterioration of feeds and gastro-intestinal health, but also large proportions to be excreted into the eco-system, leading to many jurisdictions to set up limits of Cu and Zn usages i [...]

by Ricardo H. Hernández-Figueroa  , Aurelio López-Malo  and Emma Mani-López

Received: 17 April 2026;  Published: 04 August 2026;  doi: 10.21926/rpn.2603020

Cottage cheese is a promising matrix for delivering probiotic microorganisms due to its buffering capacity, high moisture content, and consumer acceptance. In this study, a probiotic cottage cheese incorporating Lactobacillus acidophilus LA-5 was developed and evaluated against a control formulation and commercial products. Physicochemical properties, probiotic viability, acidification kinetics, and sensory acceptance were assessed during refrigerated storage. The formulation consistently maintains viable probiotic [...]