King Fahd University of Petroleum and Minerals

Design of a Pyrrolidine–QuaternaryAmmoniumCyclocopolymer as a Nonbiocidal Corrosion Inhibitor for Mild Steelin 15 wt % HCl

Abstract 15 wt % HCl used in oil and gas acidizing operations causes severe corrosion to operational pipelines and tubing. In this work, a pyrrolidine- and quaternary ammonium salt-based cyclocopolymer (PCP) has been synthesized as an efficient corrosion inhibitor for mild steel...

Molecular and Supramolecular Pathways for CO 2 Separation Membranes: Amine‐Functionalized Silica and Hydrogen‐Bonded Organic Frameworks

Efficient CO 2 capture from flue gas is fundamentally limited by the trade‐off between permeability, selectivity, and chemical stability. Amine‐functionalized sorbents (AFS) achieve high selectivity via strong chemisorption, but suffer from kinetic limitations, pore blocking, and...

Magnetically modified orange peel powder: A sustainable and recoverable adsorbent for enhanced removal of Rhodamine B

Orange peel powder (OPP) has been widely explored for dye adsorption; however, its limited adsorption capacity and poor separation efficiency restrict its practical applicability. In this study, magnetic Fe 3 O 4 nanoparticles were successfully integrated with OPP through a green...

Rural entrepreneurship and ecommerce interlinkage: a multi-country exploration in the African context

Purpose To explore the challenges facing rural entrepreneurs in adopting ecommerce in an under-researched African context, this study aims to adopt a multi-country exploration involving five countries and offers valuable managerial and theoretical implications. Design/methodology...

A configurational perspective of digital transformation: uncovering the multiple pathways to digital success in an emerging economy

Purpose Digital transformation (DT) research remains fragmented as prior studies adopt linear and factor-based approaches that overlook causal complexity. Drawing on the configurational theory and critical realism, this study addresses whether and how multiple organizational cond...

M-quad: an anomalous force-routing mechanical metamaterial

Most mechanical metamaterials (MMs) are optimized to absorb or sustain loads along a single path, limiting force-trajectory control. Herein, we introduce a novel multimaterial MM (M-quad) that actively routes a compressive force into the lateral and return pathways. Each unit cel...

Transient recovery voltage for load current switching test of MV load break switch

Switchgear manufacturers and type testing laboratories conduct the active load-current switching test of MV interrupter switches (load break switch or disconnector) following the guidelines of either the IEEE or IEC standards. However, the testing guidelines defined by these two...

Comparative assessment of OPC and portland composite cements on the rheology and strength of nylon fiber-modified self-compacting concrete

Abstract This study investigates the combined effects of Portland composite cement type and nylon fiber dosage on the fresh-property compliance and 28-day mechanical performance of self-compacting concrete (SCC). An empirical SCC proportioning approach was adopted. Four OPC-based...