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Partition of Unity Finite Element Analysis of Nonlinear Transient Diffusion Problems Using p-Version Refinement

Computer Modeling in Engineering & Sciences 2020年第7期124卷 61-78页

作者： Abdelkarim El Kahoui mustapha malek Nouh Izem MShadi Mohamed Mohammed Seaid Laboratory of Engineering Sciences Faculty of ScienceIbn Zohr UniversityAgadirMorocco School of Energy GeoscienceInfrastructure and SocietyHeriot-Watt UniversityEdinburghEH144ASUK Department of Engineering Durham UniversityDurhamDH13LEUK International Water Research Institute University Mohammed VI PolytechnicBenguerirMorocco

We propose a high-order enriched partition of unity finite element method for linear and nonlinear time-dependent diffusion *** solution of this class of problems often exhibits non-smooth features such as steep gradients and boundary layers which can be very challenging to recover using the conventional low-order finite element methods.A class of steady-state exponential functions has been widely used for enrichment and its performance to numerically solve these challenges has been ***,these enrichment functions have been used only in context of the standard h-version refinement or the so-called q-version *** this paper we demonstrate that the p-version refinement can also be a very attractive option in terms of the efficiency and the accuracy in the enriched partition of unity finite element ***,the transient diffusion problem is integrated in time using a semi-implicit scheme and the semi-discrete problem is then integrated in space using the p-version enriched finite *** results are presented for three test examples of timedependent diffusion problems in both homogeneous and heterogeneous *** computed results show the significant improvement when using the p-version refined enriched approximations in the finite element *** addition,these results support our expectations for a robust and high-order accurate enriched partition of unity finite element method.

关键词： Partition of unity finite element method p-version refinement

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Antibacterial, cytotoxicity and wound healing assessments of amine-functionalised zeolite Y

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Particuology 2019年第4期17卷 116-123页

作者： Muhammad Hariz Asraf Nik Ahmad Nizam Nik malek Khairunadwa Jemon Nor Suriani Sani mustapha Salisu Muhammad Department of Biosciences Faculty of Science Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia Centre for Sustainable Nanomaterials (CSNano) Ibnu Sina Institute for Scientific and Industrial Research (IS1-ISIR) Universiti Teknologi Malaysia 81310 UTMJohor Malaysia Office of Deputy Vice Chancellor (Research and Innovation) Universiti Teknologi Malaysia 81310 UTM Skudai Johor Malaysia

The antibacterial activities,cytotoxicity,and wound healing of amine(3-aminopropyltriethoxysilane (APTES))-functionalised zeolite Y against normal human fibroblast cells were *** characterisation of unmodified and amine-functionalised zeolites Y (Z,ZA 0.04,ZA 0.4,and ZA 0.6) by Fourier transform infrared spectroscopy,X-ray powder diffraction,and energy dispersive X-ray analysis proved that the APTES molecules were grafted onto the zeolite Y surface without distorting its framework *** amine-functionalised zeolite Y samples possessed antibacterial activities against several ATCC bacteria that were correlated with the increased amount of APTES on the zeolite Y ***,when a higher concentration of APTES was grafted on the zeolite Y,higher cytotoxicity was observed against the fibroblast *** the ZA 0.6 sample (zeolite Y functionalised with 0.6 M of APTES) had higher antibacterial activity,it was cytotoxic to the ***,the selection of an antibacterial agent for human treatment purposes must also consider its cytotoxicity effect against human cells to ensure it is biocompatible.

关键词： Zeolite Y Amine functionalised zeolite Functionalisation Antibacterial agent Cytotoxicity

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Impact of Palm Oil versus Other Oils on Weight Changes: A Systematic Review

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Food and Nutrition Sciences 2018年第7期9卷 915-936页

作者： Nor Asiah Muhamad Normi mustapha Mohd Farid Baharin Mohd Hatta Abdul Mutalip Murnilina Abdul malek Ruhaya Salleh Nor Azian Mohd Zaki Fatimah Othman Tahir Tahir Aris Shahnaz Murad Institute for Public Health Ministry of Health Kuala Lumpur Malaysia Non-Communicable Disease Section Ministry of Health Putrajaya Malaysia Faculty of Science and Technology Open University Kuala Lumpur Malaysia Institute for Medical Research Ministry of Health Kuala Lumpur Malaysia Clinical Research Centre Hospital Kuala Lumpur Ministry of Health Kuala Lumpur Malaysia Office of Deputy Director General of Health (Research and Technical) Ministry of Health Putrajaya Malaysia

Objective: The present review aimed to determine the effect of palm oil versus other oils on changes in body weight or Body Mass Index (BMI). Design: A systematic review was conducted. Studies were identified by database searching (EMBASE, PUBMED, CENTRAL, SCOPUS, PROQUEST, Web of Science [ISI Web of Knowledge], Cumulative Index to Nursing and Allied Health Library (CINAHL Plus), LILAC and ***. Searching, selecting and reporting were done according to the PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) Statement. Setting: Palm oil vs other oils intervention study on weight or BMI changes. Subjects: Individuals participating in palm oil vs other oil intervention study. Results: A total of 182 studies were screened for eligibility, five studies were finally included. Three studies compared the effect of palm oil vs sunflower oil on weight changes and BMI. One study examined the effect of hybrid palm oil vs extra virgin olive oil on weight changes. The last study examined the effect of palm oil vs olive oil vs lard on weight changes. Out of 292 participants in five studies, only one study (Iggman, 2014) had a low risk of bias. In this study, there was no significant difference between the group that received sunflower oil and palm oil (SMD: 0.04, 95% CI: -0.59 to 0.66). Other four studies had unclear risk of bias. Conclusions: Based on the review, there is insufficient evidence to suggest the impact of palm oil intake on weight changes or BMI.

关键词： Palm Oil Systematic Review

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Valorization of natural diatomite mineral:Application to removal of anionic dye from aqueous solution in a batch and fixed-bed reactor

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Journal of Central South University 2022年第6期29卷 2084-2098页

作者： HADRI Mohamed EL MRABET Imane CHAOUKI Zineb DRAOUI Khalid HAMDAOUI mustapha DOUHRI Hikmat ZAITAN Hicham Processes MaterialsEnvironment Laboratory(LPME)Faculty of Sciences and TechnologySidi Mohamed Ben Abdellah UniversityB.P.2202FezMorocco Laboratory MSI Faculty of SciencesAbdel Malek Essaadi UniversityB.P.2121M’hannech II93002TetouanMorocco

In this work,the efficiency of an adsorption process,in which Moroccan diatomite(ND)is used as a low-cost adsorbent to remove Congo red(CR)dye from contaminated waters in batch and column system,was *** influence of experimental conditions(pH,adsorbent dose and temperature)on the adsorption of CR onto the ND adsorbent was studied.A study of the adsorption kinetics for CR revealed that a pseudo-second-order model provided the best fit to the experimental kinetic data,and the equilibrium data were well described by the Langmuir isotherm model with an adsorption capacity of 6.07 mg/g using 15 g/L of ND,pH=6,contact time 3 h and 25℃.On the other hand,the ND regeneration tests were investigated and showed that the desorption reaches at least 50%when using ethanol as *** addition,the adsorption process in a continuous mode was *** curves were properly represented by the Yoon—Nelson ***,the adsorption capacity of 5.71 mg/g was reached using 0.114 g of adsorbent,CR concentration of 6 mg/L and a flow of 1 mL/min under 25℃.

关键词： Congo red adsorption diatomite fixed-bed column kinetic model

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