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Radiative Blood-Based Hybrid Copper-Graphene Nanoliquid Flows along a Source-Heated Leaning Cylinder

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 1017-1037页

作者： siti Nur Ainsyah Ghani Noor Fadiya mohd Noor Institute of Mathematical Sciences Faculty of ScienceUniversiti MalayaKuala Lumpur50603Malaysia Center for Data Analytics Consultancy&Services(UM-CDACS) Faculty of ScienceUniversiti MalayaKuala Lumpur50603Malaysia

Variant graphene,graphene oxides(GO),and graphene nanoplatelets(GNP)dispersed in blood-based copper(Cu)nanoliquids over a leaning permeable cylinder are the focus of this *** forms of graphene are highly beneficial in the biological and medical fields for cancer therapy,anti-infection measures,and drug *** non-Newtonian Sutterby(blood-based)hybrid nanoliquid flows are generalized within the context of the Tiwari-Das model to simulate the effects of radiation and heating *** governing partial differential equations are reformulated into a nonlinear set of ordinary differential equations using similar transformational *** equations are then transformed into boundary value problems through a shooting technique,followed by the implementation of the bvp4c tool in *** influences of various parameters on the model’s nondimensional velocity and temperature profiles,reduced skin friction,and reduced Nusselt number are presented for detailed *** results indicated that Cu-GNP/blood and Cu-GO/blood hybrid nanofluids exhibit the lowest and highest velocity distributions,respectively,for increased nanoparticles volume fraction,curvature parameter,Sutterby fluid parameter,Hartmann number,and wall permeability ***,opposite trends are observed for the temperature distribution for all considered parameters,except the mixed convection *** in the reduced skin friction magnitude and the reduced Nusselt number with higher values of graphene/GO/GNP nanoparticle volume fraction are also ***,GNP is identified as the superior heat conductor,with an average increase of approximately 5%and a peak of 7.8%in the reduced Nusselt number compared to graphene and GO nanoparticles in the Cu/blood nanofluids.

关键词： Hybrid nanofluid sutterby fluid tiwari-das model thermal radiation graphene graphene oxides graphene nanoplatelets

Effects of Hibiscus sabdariffa Linn. fruit extracts on α-glucosidase enzyme,glucose diffusion and wound healing activities

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Asian Pacific Journal of Tropical Biomedicine 2017年第5期7卷 466-472页

作者： Raheem Mohssin Shadhan siti Pauliena mohd Bohari Department of Biotechnology and Medical Engineering Faculty of Biosciences and Medical EngineeringUniversiti Teknologi Malaysia81310UTMJohor BahruJohorMalaysia

Objective:To provide in vitro evidence for antidiabetic activity through potential inhibition of α-glucosidase enzyme,glucose diffusion and enhancement in the wound healing using methanolic extract and fractions from Hibiscus sabdariffa ***:The inhibitory action of methanolic extract and fractions of such fruit on aglucosidase enzyme and glucose movement through in vitro assay assessment was *** activities on wound healing were tested using the scratch ***:Ethyl acetate fraction at 50 mg/m L concentration exhibited significant aglucosidase inhibition(95.79 mg/m L) with P sitively.

关键词： α-Glucosidase Glucose diffusion Wound healing Hibiscus sabdariffa Linn

Modified 2 Satisfiability Reverse Analysis Method via Logical Permutation Operator

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Computers, Materials & Continua 2023年第2期74卷 2853-2870页

作者： siti Zulaikha mohd Jamaludin mohdAsyraf Mansor Aslina Baharum mohd Shareduwan mohd Kasihmuddin Habibah A.Wahab Muhammad Fadhil Marsani School of Mathematical Sciences Universiti Sains MalaysiaMindenPenang11800Malaysia School of Distance Education Universiti Sains MalaysiaMindenPenang11800Malaysia Faculty of Computing and Informatics Universiti Malaysia SabahJalan UMSKota Kinabalu88450SabahMalaysia School of Pharmaceutical Sciences Universiti Sains MalaysiaMindenPenang11800Malaysia

The effectiveness of the logic mining approach is strongly correlated to the quality of the induced logical representation that represent the behaviour of the ***,the optimum induced logical representation indicates the capability of the logic mining approach in generalizing the real datasets of different variants and *** main issues with the logic extracted by the standard logic mining techniques are lack of interpretability and the weakness in terms of the structural and arrangement of the 2 Satisfiability logic causing lower *** address the issues,the logical permutation serves as an alternative mechanism that can enhance the probability of the 2 Satisfiability logical rule becoming true by utilizing the definitive finite arrangement of *** work aims to examine and analyze the significant effect of logical permutation on the performance of data extraction ability of the logic mining approach incorporated with the recurrent discrete Hopfield Neural *** on the theory,the effect of permutation and associate memories in recurrent Hopfield Neural Network will potentially improve the accuracy of the existing logic mining *** validate the impact of the logical permutation on the retrieval phase of the logic mining model,the proposed work is experimentally tested on a different class of the benchmark real datasets ranging from the multivariate and timeseries *** experimental results show the significant improvement in the proposed logical permutation-based logic mining according to the domains such as compatibility,accuracy,and competitiveness as opposed to the plethora of standard 2 Satisfiability Reverse Analysis methods.

关键词： Logic mining logical permutation discrete hopfield neural network knowledge extraction

Numerical Simulations of One-Directional Fractional Pharmacokinetics Model

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Computers, Materials & Continua 2022年第12期73卷 4923-4934页

作者： Nursyazwani Mohamad Noor siti Ainor mohd Yatim Nur Intan Raihana Ruhaiyem School of Distance Education Universiti Sains MalaysiaUSM PenangPenang11800Malaysia School of Computer Science Universiti Sains MalaysiaUSM PenangPenang11800Malaysia

In this paper,we present a three-compartment of pharmacokinetics model with irreversible rate *** compartment consists of arterial blood,tissues and venous ***’s principle and the law of mass action were used to develop the model based on the diffusion *** model is modified into a fractional pharmacokinetics model with the sense of Caputo *** existence and uniqueness of the model are investigated and the positivity of the model is *** behaviour of the model is investigated by implementing numerical algorithms for the numerical solution of the system of fractional differential *** software is used to plot the graphs for illustrating the variation of drug concentration concerning ***,the numerical simulations of the model are presented for different values ofαwhich verified the theoretical ***,we also observed the pattern of the simulations at the three-compartment of the model by using different values of initial conditions.

关键词： Pharmacokinetics model Irreversible rate Fractional order Numerical simulations

XPC Lys939Gln polymorphism, smoking and risk of sporadic colorectal cancer among Malaysians

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World Journal of Gastroenterology 2013年第23期19卷 3623-3628页

作者： Abdul Aziz Ahmad Aizat mohd Shahpudin siti Nurfatimah Mustapha mohd Aminudin Ravindran Ankathil Human Genome Centre School of Medical SciencesUniversiti Sains Malaysia Health Campus16150 Kubang Kerian Kelantan Malaysia

AIM: To investigate the risk association of xeroderma pigmentosum group C (XPC ) Lys939Gln polymorphism alone and in combination with cigarette smoking on colorectal cancer (CRC) predisposition. METHODS: Peripheral blood samples of 510 study subjects (255 CRC patients, 255 controls)were collected. DNA was extracted and genotyping was performed using polymerase chain reaction-restriction fragment length polymorphism. The association between polymorphic genotype and CRC predisposition was determined using the OR and 95%CI. RESULTS: The frequency of the homozygous variant (Gln/Gln) genotype was significantly higher in cases compared with controls (16.0% vs 10.2%, P = 0.049). The Gln/Gln genotype of XPC showed a significantly higher association with the risk of CRC (OR = 1.884; 95%CI: 1.082-3.277; P = 0.025). In the case of allele frequencies, variant allele C was associated with a significantly increased risk of CRC (OR = 1.375; 95%CI: 1.050-1.802; P = 0.020). Moreover, the risk was markedly higher for those who were carriers of the Gln/Gln variant genotype and were also cigarette smokers (OR = 3.409; 95%CI: 1.061-10.949; P = 0.032). CONCLUSION: The XPC Gln/Gln genotype alone and in combination with smoking increases the risk of CRC among Malaysians.

关键词： DNA repair Xeroderma pigmentosum group C Lys939Gln polymorphism Cigarette smoking Colorectal cancer Susceptibility risk

A Preliminary Genetic Investigation of Rastrelliger Kanagurta Based on Random Amplified Polymorphic DNA and Mitochondrial ND2 Gene

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湿地科学 2008年第4期6卷 518-525页

作者： siti Azizah mohd Nor Abu Talib A mohd Ghows M A Samsudin B Aquaculture Research Group School of Biological Sciences University Sains Malaysia 11800 Minden Penang Malaysia Fisheries Research Institute 11900 Batu Maung Penang Malaysia

In a preliminary investigation, Random Amplified Polymorphic DNA (RAPD) analysis and partial mitochondrial ND2 gene sequencing were conducted to study the genetic variation of the Indian mackerel, Rastrelliger kanagurta along a 450 km stretch of its distribution on the west coast of Peninsular Malaysia. A total of 53 individuals from 6 populations were analyzed using 4 RAPD primers and a sub-sample of 15 individuals was chosen for sequencing of partial ND2 gene. Comparison between the 2 markers revealed genetic structuring in the RAPD results but genetic homogeneity for ND2 gene. Based on the former there may be at least 2 genetically differentiated groups of Rastrelliger kanagurta along this stretch.

关键词：基因 DNA分析分析方法生物技术水生生物

Distribution of Chironomidae (Insecta: Diptera) in polluted rivers of the Juru River Basin, Penang, Malaysia

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Journal of Environmental Sciences 2010年第11期22卷 1718-1727页

作者： Salman A. Al-Shami Che Salmah Md Rawi Abu HassanAhmad siti Azizah mohd Nor School of Biological Sciences Universiti Sains Malaysia Centre for Marine and Coastal Studies Universiti Sains Malaysia

The influence of physical and chemical parameters on the abundance and diversity of chironomids was studied in six rivers with moderate to highly polluted water in the Juru River Basin. The rivers： Ceruk Tok Kun （CTKR） as reference site, and polluted rivers of Pasir （PR）, Juru （JR）, Permatang Rawa （PRR）, Ara （AR） and Kilang Ubi （KUR） were sampled over a period of five months （November 2007–March 2008）. Nine chirnomid species： Chironimus kiiensis, C. javanus, Polypedilum trigonus, Microchironomus sp., Dicrotendipes sp., Tanytarsus formosanus, Clinotanypus sp., Tanypus punctipennis and Fittkauimyia sp. were identified. Assessment of their relationships with several environmental parameters was performed using the canonical correspondence analysis （CCA）. Tanytarsus formosanus was the most dominant in the relatively clean CTKR and moderately polluted JR with mean densities of 19.66 and 25.32 m 2 , respectively while C. kiiensis was abundant in more polluted rivers. Tanytarsus formosanus, Dicrotendipes sp. and Microchironomus sp. were grouped under moderate to high water temperature, total organic matter （TOM）, total suspended solids （TSS）, velocity, pH, phosphates and sulphates. However, Tanypus punctipennis, Fittkauimyia sp., and Clinotanypus sp. were associated with high contents of river sediment such as TOM, Zn and Mn and water ammonium-N and nitrate-N and they were associated with higher dissolved oxygen （DO） content in the water. Chironomus kiiensis, C. javanus and P. trigonus showed positive relationships with TOM, ammonium-N and nitrate-N as well as trace metals of Zn, Cu and Mn. These three species could be considered as tolerant species since they have the ability to survive in extreme environmental conditions with low DO and high concentrations of pollutants. Based on the water parameter scores in all rivers, the highest diversity of chironomid larvae was reported in CTKR. With higher concentrations of organic and/or inorganic pollutants as reported in PPR, K

关键词： chironomid larvae Juru River physicochemical parameters canonical correspondence analysis

Development and characterization of food packaging bioplastic film from cocoa pod husk cellulose incorporated with sugarcane bagasse fibre

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Journal of Bioresources and Bioproducts 2020年第4期5卷 248-255页

作者： siti Nuurul Hud Mohammad Azmin Najah Aliah binti mohd Hayat mohd Shukri Mat Nor Faculty of Agro-Based Industry Universiti Malaysia Kelantan Jeli CampusLocked Bag 10017600 Jeli KelantanMalaysia Department of Research and Development Jeli Agricultural TechnologyPT7458 Kampung Gemang Baru17700 Ayer LanasJeli KelantanMalaysia

Agricultural wastes,including cocoa pod husk(waste from the chocolate industry)and sugarcane bagasse(waste from the sugar industry),are increasing day by *** development of food packaging biofilms from these two wastes could be beneficial to the environment and ***,this study was conducted to develop biodegradable plastic films by using cocoa pod husk and sugarcane *** and fibre were extracted from cocoa pod husk and sugar-cane bagasse,*** developed bioplastic films were divided into several concentration ratios of cellulose and fibre which are 100꞉0(100%cellulose),75꞉25(cellulose꞉fibre),50꞉50(cel-lulose꞉fibre),25꞉75(cellulose꞉fibre),and 0꞉100(100%fibre).The physicochemical properties for all bioplastic concentration ratios were determined in terms of sensory evaluation,drying time,moisture content,water absorption and water vapor *** the observation and anal-ysis of the physicochemical properties of bioplastic,we found that the most suitable bioplastic film for food packaging goes to the combination of 75%cellulose and 25%fibre bioplastic,as it demonstrated the lowest water absorption percentage and water vapor permeability.

关键词： Agricultural waste Cocoa pod husk Sugarcane bagasse Bioplastic film Water absorption Moisture content

A Multi-scale Smart Fault Diagnosis Model Based on Waveform Length and Autoregressive Analysis for PV System Maintenance Strategies

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Chinese Journal of Electrical Engineering 2023年第3期9卷 99-110页

作者： siti Nor Azlina M.Ghazali Muhamad Zahim Sujod mohd Shawal Jadin Department of Electrical Engineering Universiti Malaysia PahangPekan 26600Malaysia Faculty of Electrical and Electronics Engineering Technology Universiti Malaysia PahangPekan 26600Malaysia

Nonlinear photovoltaic(PV)output is greatly affected by the nonuniform distribution of daily irradiance,preventing conventional protection devices from reliably detecting *** fault diagnosis and good maintenance systems are essential for optimizing the overall productivity of a PV system and improving its life ***,a multiscale smart fault diagnosis model for improved PV system maintenance strategies is *** study focuses on diagnosing permanent faults(open-circuit faults,ground faults,and line-line faults)and temporary faults(partial shading)in PV arrays,using the random forest algorithm to conduct time-series analysis of waveform length and autoregression(RF-WLAR)as the main features,with 10-fold cross-validation using Matlab/*** actual irradiance data at 5.86°N and 102.03°E were used as inputs to produce simulated data that closely matched the on-site PV output *** data from the maintenance database of a 2 MW PV power plant in Pasir Mas Kelantan,Malaysia,were used for field testing to verify the developed *** RF-WLAR model achieved an average fault-type classification accuracy of 98%,with 100%accuracy in classifying partial shading and line-line faults.

关键词： Autoregressive PV fault diagnosis supervised machine learning simulation waveform length