2,806 results match your criteria: "King Fahd University of Petroleum & Minerals KFUPM[Affiliation]"

An adaptive neural network approach for resilient leader-following consensus control of multi-agent systems under cyber-attacks.

ISA Trans

November 2024

Electrical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia; Interdisciplinary Research Center for Sustainable Energy Systems, KFUPM, Dhahran 31261, Saudi Arabia. Electronic address:

This paper addresses the dynamic neural networks (DNNs) based resilient leader-following consensus control of multi-agent systems (MASs) under unidentified false data injection (FDI) attacks. We have examined generic linear leader-following agents in the context of stochastic FDI attacks on the network topology. When information is sent from one agent to another, it is altered as a result of the attacks.

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PERSISTENT DIRAC OF PATHS ON DIGRAPHS AND HYPERGRAPHS.

Found Data Sci

June 2024

Department of Mathematics, Michigan State University, MI 48824, USA.

This work introduces the development of path Dirac and hypergraph Dirac operators, along with an exploration of their persistence. These operators excel in distinguishing between harmonic and non-harmonic spectra, offering valuable insights into the subcomplexes within these structures. The paper showcases the functionality of these operators through a series of examples in various contexts.

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Advancements and Challenges in Adsorption-Based Carbon Capture Technology: From Fundamentals to Deployment.

Chem Rec

January 2025

Interdisciplinary Research Center for Hydrogen Technologies and Carbon Management (IRC-HTMC), King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia.

Carbon dioxide (CO) adsorption on solid sorbents represents a promising technology for separating carbon from different sources and mitigating anthropogenic emissions. The complete integration of carbon capture technologies in various industrial sectors will be crucial for a sustainable, low-carbon future. Despite developing new sorbents, a comprehensive strategy is essential to realize the full potential and widespread adoption of CO capture technologies, including different engineering aspects.

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Green solution for oil spills: A review on the role of surface-active ionic liquids.

Adv Colloid Interface Sci

February 2025

Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia. Electronic address:

Oil spills have long-lasting and harmful impacts on the environment, particularly on aquatic ecosystems. This review provides a comprehensive overview of conventional methods for oil spill removal, highlighting both their advantages and limitations. Traditional methods for addressing oil spills, including physical, thermal, biological and chemical techniques, often prove insufficient, with chemical dispersants being the most popular approach.

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-Symmetry Breaking and Spin Control in 2D Antiferromagnetic MnSe.

ACS Omega

November 2024

Department of Physics and Electrical Engineering, Linnaeus University, SE-39231 Kalmar, Sweden.

Two-dimensional (2D) materials with intrinsic antiferromagnetic (AFM) order provide a unique avenue to harness both charge and spin degrees of freedom for practical spintronics applications. Here, by using ab initio electronic structure calculations, the interplay of discrete crystal symmetries (such as inversion ( ), time-reversal ( ), or combined symmetry) of 2D semiconducting AFM manganese selenide (MnSe) and external electric field along with graphene proximity is investigated. We show that both an external electric field and graphene proximity can independently break otherwise conserved combined symmetry in 2D MnSe, resulting in large and tunable spin-splittings in both valence and conduction bands, and provide electrical control over a wide energy range.

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Sodium alginate and its modified counterpart as sustainable-based corrosion inhibitors for N80 pipeline carbon steel: Experimental and theoretical approach.

Int J Biol Macromol

January 2025

Sustainable and Resilient Materials Lab, Center for Integrative Petroleum Research (CIPR), College of Petroleum Engineering & Geosciences (CPG), King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia. Electronic address:

Sodium alginate is a highly promising biopolymer for use as an eco-friendly/green corrosion inhibitor (CI), despite its limited solubility. In this study, a green and water-soluble modified sodium alginate (MSA) salt was synthesized and employed as a CI on pipeline N80 carbon steel (N80CS) in artificial sea water (ASW) medium. Various analytical tools related to surface and structure were utilized to describe the properties of the newly synthesized MSA polymer.

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A landfill biocover is essential for addressing environmental concerns, especially in waste management, as it plays a crucial role in mitigating the release of methane gas. This study investigates the geotechnical characteristics of soil amended with organic wastes for landfill biocover applications. Various organic waste amendments, viz.

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Article Synopsis
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  • The DOI (Digital Object Identifier) provided leads to the original article, which may have errors or issues that need addressing.
  • This correction is important for maintaining the accuracy and integrity of the research published in the article.
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This study investigates the erosion behavior of Al-SiC and Al-WC metal-based composites in a solid particle impingement environment developed through powder metallurgy. Micro-sized powders of SiC and WC were utilized in different weight proportions (0-10 wt%) for fabricating the composite samples. The angle of impingements of 30-90° and impact velocity of 30-90 m/s were used for solid particle erosion testing.

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Article Synopsis
  • The increasing levels of carbon dioxide in the atmosphere have significant adverse effects, prompting research into materials for carbon capture, with layered double hydroxides (LDHs) showing promise due to their high surface area and CO adsorption capabilities.
  • Despite existing reviews on carbon capture materials, there is a lack of comprehensive reviews specifically addressing LDH-based materials, highlighting the need for updated analysis in this rapidly evolving field.
  • This review article aims to fill that gap by providing an overview of recent advancements, synthesis methods, performance factors, and future research directions in CO capture using LDHs, while also discussing existing challenges and knowledge gaps.
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After natural disasters such as earthquakes, floods, or wars occur, cellular communication networks often sustain significant damage or become impaired. In these critical situations, first responders must coordinate with other rescue teams to communicate essential information to central command and survivors. To address this challenge, we have developed a reliable and rapidly deployable wireless ad hoc system for post-disaster management using Data Distribution Service (DDS) middleware, specifically RTI-DDS, named R-RDSP.

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Managing chemical reactivity is crucial for sustainable chemistry and industry, fostering efficiency, reducing chemical waste, saving energy, and protecting the environment. Emulsification is used for different purposes, among them controlling the reactivity of highly reactive chemicals. Thermochemical fluids (TCFs), such as NHCl and NaNO salts, have been utilized in various applications, including the oil and gas industry.

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An Integrated Multimodal-Based CAD System for Breast Cancer Diagnosis.

Cancers (Basel)

November 2024

Center for Applied and Translational Genomics (CATG), Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai Healthcare City, Dubai P.O. Box 50505, United Arab Emirates.

Breast cancer has been one of the main causes of death among women recently, and it has been the focus of attention of many specialists and researchers in the health field. Because of its seriousness and spread speed, breast cancer-resisting methods, early diagnosis, diagnosis, and treatment have been the points of research discussion. Many computers-aided diagnosis (CAD) systems have been proposed to reduce the load on physicians and increase the accuracy of breast tumor diagnosis.

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Article Synopsis
  • * A review of 43 studies revealed over 30 bacterial genera capable of degrading polyaromatic hydrocarbons (PAHs), detailing different methods of selecting and isolating these bacteria.
  • * The paper outlines the biochemical pathways for PAH degradation, identifies research gaps for future studies, and provides a foundational understanding for improving bioremediation strategies in oil-contaminated areas.
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The increasing number of individuals with limb loss worldwide highlights the need for advancements in prosthetic knee technology. To improve control and quality of life, integrating brain-computer communication with motor imagery offers a promising solution. This study introduces a hybrid system that combines electromyography (EMG) and functional near-infrared spectroscopy (fNIRS) to address these limitations and enhance the control of knee movements for individuals with above-knee amputations.

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Sample loading in gel electrophoresis using adapted 3D printers.

Anal Biochem

February 2025

Laboratory for Optics and Applied Mechanics, Department of Mechanical & Aerospace Engineering, Monash University, Clayton, Victoria, 3800, Australia. Electronic address:

In gel electrophoresis, samples that are dispensed too high above or too low into the wells result in sub-optimal outcomes. Here, an adapted 3D printer liquid handler equipped with an optical sensor was found to attain vertical sample delivery positionings at a standard deviation over mean ratio of 0.008.

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This study investigates the process of optimizing the injection rates of carbonic acid during matrix acidizing in carbonate formations, highlighting its impact on wormhole formation, dissolution, and the changes in rock petrophysical properties. Indiana limestone core samples, with porosity ranging from 14 % to 16 % and permeability from 7 to 12 mD, were flooded using diffrent injection rates (0.5, 1, 2, and 5 cm³/min) to determine the optimal injection velocity.

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Precipitation polymerization method was used to synthesize chitosan based poly[chitosan-N-isopropylmethacrylamide-acrylic acid] [P(CS-NI-AA)] microgel particles. Synthesized P(CS-NI-AA) microgel particles were utilized as micro-reactors for the fabrication of silver nanoparticles (AgNPs) inside the structure of microgels through chemical reduction of Ag ions using NaBH as reducing agent. P(CS-NI-AA) and Ag-P(CS-NI-AA) systems were analyzed using various characterization techniques like scanning electron microscopy (SEM), ultraviolet-visible (UV-visible) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy.

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Reinforced concrete (RC) constructions are seriously threatened by chloride-induced corrosion (CIC) and carbonation, which can result in structural degradation, safety issues, and financial losses. Electrochemical methods and microstructural analysis tests are some of the laboratory techniques used to examine key elements of CIC, such as the impact of different variables and the efficacy of mitigation solutions. studies that make use of non-destructive testing, chloride profiling, and half-cell potential measurements offer important new insights into the long-term performance and causes of RC structure deterioration in real-world circumstances.

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Maintaining public health and environmental safety in the Nordic nations calls for a strict plan to define exact benchmarks on air quality and energy efficiency. This study investigates the complicated interaction of decentralized energy production (DEP) with energy efficiency, and air quality index in the Nordic nations from 1990 to 2022 using System GMM and Artificial Neural Network (ANN) approach. Our research explored positive role of decentralized energy production and technological advancement to propel notable increases in energy efficiency, hence lowering pollution expressed as PM2.

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Transition Metal Ions in Solution: Complexed Ion Speciation at the Air-Liquid Interface.

Langmuir

November 2024

Mary and Charles Ferkel Professor of Chemistry, California Institute of Technology, Noyes Lab Chem Phys, Pasadena, California 91125, United States.

We have studied the interfacial properties of Zn vs selected transition metal cations such as Fe, Cu, and Cr in a water-ethanol mixture using field-induced droplet ionization. This was in particular inspired by the specific surface activity of Zn that has been observed on several occasions and a desire to clarify the root cause for this behavior. We have found that Zn, due to its unique electronic configuration and atomic size, is the only ion of those under study that gives rise to specific speciation at the air-liquid interface with three ethanol molecules attached to the central atom for optimal polarity.

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A combination of material innovations, advanced manufacturing, battery management systems, and regulatory standards is necessary to improve the energy density and safety of lithium (Li) batteries. High-energy-density solid-state Li-batteries have the potential to revolutionize industries and technologies, making them a research priority. The combination of improved safety and compatibility with high-capacity electrode materials makes solid-stateLi-batteries with polymer solid-electrolytes an attractive option for applications where energy density and safety are critical.

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This study aims to reach a sustainable solution for waste management of medical plastics through value-added product extraction. It uses the DOE technique to examine the effect of natural zeolite and synthetic AlO and SiO as catalysts. A small lab-scale pyrolysis setup was used for medical plastic waste management treatment.

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Recent research has discussed the positive impacts of metal-based nanoparticles (NPs) on bioprocesses producing either hydrogen (H) or methane (CH). The enhancement has been explained by mechanisms such as direct interspecies electron transfer (DIET), metal corrosion, and dissimilatory reduction. Such interactions could induce further benefits, such as controlling oxidation-reduction potential (ORP), mitigating toxicants, promoting enzymatic activity, and altering the microbiome, which have not yet been comprehensively discussed.

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