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Lipase-catalyzed synthesis of fructosyl myristic acid esters as biosurfactants in a low solvent media: Optimization of the bioconversion

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Food Bioscience 2022年第6期50卷 492-501页

作者： Juan Tamayo Cabezas Amanda Waglay salwa karboune Department of Food Science and Agricultural Chemistry McGill University21 111 LakeshoreSte.Anne de BellevueQuebecH9X 3V9Canada

Lipase-catalyzed synthesis of fructosyl myristic acid esters as natural food biosurfactants in low solvent reaction media was investigated. The effect of chain length of fructose-based glycosides as acyl acceptors was found to be inversely proportional to the bioconversion yield. The application of molecular sieves proved unsuccessful in low-solvent media due to their saturation and mass transfer limitations. The substitution of low-solvent myristic acid reaction media with 5% oleic acid led to similar bioconversion yield than that achieved without oleic acid, while no solidification of the reaction media was observed. Response surface methodology using a 3-factor and 5-level central composite design was used to achieve a compromise between mass transfer limitations and catalytic activity of lipase in low-solvent myristic acid reaction media enriched with oleic acid. Modeling found reduced quadratic models accurately described the yield and productivity of the reaction. Maximum bioconversion yield (22%) was achieved using 0.2 mol/L of fructose and 5% (w/v) of Lipozyme® RM IM in a reaction media composed of 80% myristic acid and 10% oleic acid. Lipozyme® RM IM catalyzed successfully 5 consecutive reactions before showing reduction of its synthetic activity at the 6th cycle. The end-product profile analysis confirmed the selectivity of Lipozyme® RM IM towards saturated fatty acids over unsaturated one and the formation of fructosyl monoester and diester of myristic acids. This study lays the ground of a sustainable approach for the acylation of myristic or longer saturated fatty acids with carbohydrates for a great potential as functional ingredients.

关键词： Low-solvent reaction media Lipozyme®RM IM Lipase-catalyzed esterification Carbohydrate fatty acid esters

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A Synergistic Multi-Attribute Decision-Making Method for Educational Institutions Evaluation Using Similarity Measures of Possibility Pythagorean Fuzzy Hypersoft Sets

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 501-530页

作者： Khuram Ali Khan Saba Mubeen Ishfaq Atiqe Ur Rahman salwa El-Morsy Department of Mathematics University of SargodhaSargodha40100Pakistan Department of Mathematics University of Management and TechnologyLahore54000Pakistan Department of Mathematics College of ScienceQassim UniversityBuraydah51452Saudi Arabia

Due to the numerous variables to take into account as well as the inherent ambiguity and uncertainty,evaluating educational institutions can be *** concept of a possibility Pythagorean fuzzy hypersoft set(pPyFHSS)is more flexible in this regard than other theoretical fuzzy set-like models,even though some attempts have been made in the literature to address such *** study investigates the elementary notions of pPyFHSS including its set-theoretic operations union,intersection,complement,OR-and *** results related to these operations are also modified for ***,the similarity measures between pPyFHSSs are formulated with the assistance of numerical examples and ***,an intelligent decision-assisted mechanism is developed with the proposal of a robust algorithm based on similarity measures for solving multi-attribute decision-making(MADM)problems.A case study that helps the decision-makers assess the best educational institution is discussed to validate the suggested *** algorithmic results are compared with the most pertinent model to evaluate the adaptability of pPyFHSS,as it generalizes the classical possibility fuzzy set-like theoretical ***,while considering significant evaluating factors,the flexibility of pPyFHSS is observed through structural comparison.

关键词： Hypersoft set Pythagorean fuzzy hypersoft set computational complexity multi-attribute decision-making optimization similarity measures uncertainty

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Numerical investigation of velocity ratio effect in combined wall and offset jet flows

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Journal of Hydrodynamics 2018年第6期30卷 1105-1119页

作者： Nidhal Hnaien salwa Marzouk Habib Ben Aissia Jacques Jay Unité de Métrologie et des systèmes énergétiques Ecole National d'ingénieurs de Monastir Tunisie Centre de Thermique de Lyon (CETHIL-UMR CNRS 5008) INSA de Lyon France

In the present work, we propose to numerically study a combined turbulent wall and offset jet flow(this combination will be denoted WOJ). Several turbulence models were tested in this study: the standard k-w, SST k-w, standard k-ε, RNG, and realizable k-ε model. A parametric study was performed to determine the effect of offset ratio H and the velocity ratio r on the longitudinal and transverse positions of the merge point(MP), the combined point(CP), the upper vortex center(UVC) and the lower vortex center(LVC). Correlations that predict the position of these characteristic points of the WOJ flow as a function of H and r have been provided. Results show that any increase in the velocity ratio causes a displacement of the MP, CP, UVC and LVC further upstream along the longitudinal direction. Concerning the transverse positions, the increase of velocity ratio results in a deviation of the merge point(MP) and the lower vortex center(LVC) toward the strong jet(LWJ) whereas the transverse position of combined point(CP) and the upper vortex center(UVC) is almost independent of the velocity ratio.

关键词： Finite volume combined point merge point offset jet velocity ratio

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Classification and Diagnosis of Lymphoma’s Histopathological Images Using Transfer Learning

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Computer Systems Science & Engineering 2022年第2期40卷 629-644页

作者： Schahrazad Soltane Sameer Alsharif salwa M.Serag Eldin College of Computers and Information Technology Computer Engineering DepartmentTaif UniversityTaifKingdom of Saudi Arabia

Current cancer diagnosis procedure requires expert knowledge and is time-consuming,which raises the need to build an accurate diagnosis support system for lymphoma identification and *** studies have shown promising results using Machine Learning and,recently,Deep Learning to detect malignancy in cancer ***,the diversity and complexity of the morphological structure of lymphoma make it a challenging classification *** literature,many attempts were made to classify up to four simple types of *** paper presents an approach using a reliable model capable of diagnosing seven different categories of rare and aggressive *** Lymphoma types are Classical Hodgkin Lymphoma,Nodular Lymphoma Predominant,Burkitt Lymphoma,Follicular Lymphoma,Mantle Lymphoma,Large B-Cell Lymphoma,and T-Cell *** proposed approach uses Residual Neural Networks,ResNet50,with a Transfer Learning for lymphoma’s detection and *** model used results are validated according to the performance evaluation metrics:Accuracy,precision,recall,F-score,and kappa score for the seven *** algorithms are tested,and the results are validated on 323 images of 224×224 pixels *** results are promising and show that our used model can classify and predict the correct lymphoma subtype with an accuracy of 91.6%.

关键词： Classification confusion matrices deep learning k-fold cross validation lymphoma diagnosis residual neural network transfer learning

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Utilization of iron oxide bearing pellets waste for preparing hard and soft ferromagnetic glass ceramics

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Journal of Advanced Ceramics 2014年第4期3卷 259-268页

作者： salwa A.M.ABDEL-HAMEED Ibrahim M.HAMED Nehal A.ERFAN Glass Research Department National Research CenterDokkiCairoEgypt Chemical Engineering Department Faculty of EngineeringMinia UniversityMiniaEgyp

About 8%of the imported iron oxide pellets burdens to Egypt are *** this paper,broken pellets waste(BPW)is used as raw material for the preparation of hard magnetic glass ceramics(HMGC)as well as soft magnetic glass ceramics(SMGC).About 54 wt%and 37 wt%of BPW are used to prepare SMGC and HMGC,*** thermal analysis(DTA)reveals two broad exothermic peaks for HMGC at 591℃and 697℃,whereas one exothermic peak at 820℃is detected for SMGC.X-ray diffraction(XRD)shows the crystallization of hematite as the sol phase in BPW,and meanwhile,Zn-ferrite and Ba-hexaferrite are identified in SMGC and HMGC,*** electron microscopy(TEM)reveals the crystallization of nanosize particles of~20 nm for SMGC and~12 nm for *** scanning magnetometer(VSM)reveals an increase in saturation magnetization from~1 emu/g for BPW to~77 emu/g for SMGC and 21 emu/g for HMGC.

关键词： magnetic materials nanostructure pellets waste

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Static and dynamic stability responses of multilayer functionally graded carbon nanotubes reinforced composite nanoplates via quasi 3D nonlocal strain gradient theory

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Defence Technology（防务技术） 2022年第10期18卷 1778-1809页

作者： Ahmed Amine Daikh Mohamed Sid Ahmed Houari Mohamed Ouejdi Belarbi salwa A.Mohamed Mohamed A.Eltaher Laboratoire D'Etude des Structures et de Mecanique des Materiaux Departement de Genie CivilFacultedes Sciences et de La TechnologieUniversite Mustapha Stambouli B.P.305R.P.29000MascaraAlgeria Laboratoire de Genie Energetique et Materiaux LGEMUniversite de BiskraB.P.145R.P07000BiskraAlgeria Department of Engineering Mathematics Zagazig UniversityP.O.Box 44519ZagazigEgypt Faculty of Engineering Mechanical Engineering DepartmentKing Abdulaziz UniversityP.O.Box 80204JeddahSaudi Arabia Faculty of Engineering Mechanical Design and Production DepartmentZagazig UniversityP.O.Box 44519ZagazigEgypt

This manuscript presents the comprehensive study of thickness stretching effects on the free vibration,static stability and bending of multilayer functionally graded(FG)carbon nanotubes reinforced composite(CNTRC)*** nanoscale and microstructure influences are considered through a modified nonlocal strain gradient continuum *** on power-law functions,four different patterns of CNTs distribution are considered in this analysis,a uniform distribution UD,FG-V CNTRC,FG-X CNTRC,and FG-O CNTRC.A 3D kinematic shear deformation theory is proposed to include the stretching influence,which is neglected in classical ***'s principle is applied to derive the governing equations of motion and associated boundary *** solutions are developed based on Galerkin method to solve the governing equilibrium equations based on the generalized higher-order shear deformation theory and the nonlocal strain gradient theory and get the static bending,buckling loads,and natural frequencies of *** with previous works is presented.A detailed parametric analysis is carried out to highlight the impact of thickness stretching,length scale parameter(nonlocal),material scale parameter(gradient),CNTs distribution pattern,geometry of the plate,various boundary conditions and the total number of layers on the stresses,deformation,critical buckling loads and vibration *** new results are also reported in the current study,which will serve as a benchmark for future research.

关键词： 3D shear deformation theory Free vibration Buckling Bending Galerkin method Functionally graded nanotube Nonlocal strain gradient theory

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Indolent lung opacity: Ten years follow-up of pulmonary inflammatory pseudo-tumor

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World Journal of Clinical Cases 2017年第2期5卷 61-66页

作者： Jad A Degheili Nadim A Kanj salwa A Koubaissi Mouhamad J Nasser Division of General Surgery Department of Surgery American University of Beirut-Medical Center Division of Pulmonary Critical Care and Sleep Medicine Department of Internal Medicine American University of Beirut-Medical Center Department of Internal Medicine American University of Beirut-Medical Center

Inflammatory pseudotumor(IPT) has always been considered a diagnostic challenge. Its rarity and resemblance to other more common pathological entities imposes that neither clinical nor radiological characteristics can lead to a definitive diagnosis. The surgical excision of the lesion is the ultimate approach for accurate diagnosis and cure. Moreover the true nature of IPT, its origin as a neoplastic entity or an overreactive inflammatory reaction to an unknown trigger, has been a long debated matter. Surgery remains the treatment of choice. IPT is mostly an indolent disease with minimal morbidity and mortality. Local invasion and metastasis predict a poor prognosis. We hereby present a unique case of pulmonary IPT that was surgically excised, but recurred contralaterally, shortly thereafter. Despite no medical or surgical treatment for ten years, the lesion has remained stable in size, with neither symptoms nor extra-pulmonary manifestations.

关键词： Inflammatory pseudotumor Anaplastic lymphoma kinase Inflammatory myofibroblastic tumor Plasma cells granuloma IgG4-related sclerosing disease

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Optimized Gated Recurrent Unit for Mid-Term Electricity Price Forecasting

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Computer Systems Science & Engineering 2022年第11期43卷 817-832页

作者： Rashed Iqbal Hazlie Mokhlis Anis salwa Mohd Khairuddin Syafiqah Ismail Munir Azam Muhammad Department of Electrical Engineering Faculty of EngineeringUniversiti Malaya50603Malaysia Department of Electrical Engineering Main CampusIqra UniversityKarachi75300Pakistan

Electricity price forecasting(EPF)is important for energy system operations and management which include strategic bidding,generation scheduling,optimum storage reserves scheduling and systems ***,accurate EPF is crucial for the purpose of bidding strategies and minimizing the risk for market participants in the competitive electricity ***,accurate time-series prediction of electricity price is very challenging due to complex nonlinearity in the trend of electricity *** work proposes a mid-term forecasting model based on the demand and price data,renewable and non-renewable energy supplies,the seasonality and peak and off-peak hours of working and nonworking *** optimized Gated Recurrent Unit(GRU)which incorporates Bagged Regression Tree(BTE)is developed in the Recurrent Neural Network(RNN)architecture for the mid-term *** layer is employed to optimize the hyperparameters of the heterogeneous GRU with the aim to improve the model’s performance,error reduction and predict the *** this work,the proposed framework is assessed using electricity market data of five major economical states in Australia by using electricity market data from August 2020 to May *** results showed significant improvement when adopting the proposed prediction framework compared to previous works in forecasting the electricity price.

关键词： Deep learning energy management machine learning prediction

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A reference evapotranspiration map for Bosnia and Herzegovina

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International Soil and Water Conservation Research 2019年第1期7卷 89-101页

作者： Sabrija(C)adro salwa Cherni-(C)adro Mihajlo Markovi(c) Jasminka(Z)urovec University of Sarajevo(UNSA) Faculty of Agriculture and Food Sciences(PPF)Bosnia and Herzegovina Hydro-Engineering Institute Sarajevo(HEIS) Bosnia and Herzegovina University of Banja Luka(UNIBL) Faculty of AgricultureBosnia and Herzegovina

There are three major challenges for climatic data availability for Reference Evapotranspiration (ET0) calculations in Bosnia and Herzegovina:limited data availability,discontinuity of data records,and low station *** main objective of this study was to apply reliable methods to calculate and spatially distribute ET0,while considering the impact of the elevation.A 20 m spatial resolution map was created for mean ET0 values at monthly,vegetation period (April-September) and annual temporal resolution at municipality (143 municipalities),regional (4 regions) and national spatial resolutions.108 weather stations for the period 1961-2016 (56 years) were utilized for spatial interpolation of ET0 using kriging with external drift *** required elevation for ET0 estimation at each grid node was ext'acted from the digital elevation model of Bosnia and ***0 was calculated using FAO-56 PenmanMonteith,and in cases where only minimum and maximum temperature data were available the Hargreaves-Samani equation adjusted with locally appropriate empirical radiation coefficient was used.A gradual decrease of mean ET0 values from the southern to central and northern to central part of the country is *** the all seasons (monthly,vegetation and annually),the southern region has greater ET0 than the other three regions (north,west and central-east),which are *** long-term mean annual ET0 for Bosnia and Herzegovina is 716 mm,approximately 78% (559 mm) of which occurs during in the vegetation period.

关键词： Reference evapotranspiration Interpolation Penman-Monteith Limited data Calibration

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Cancellable Multi-Biometric Feature Veins Template Generation Based on SHA-3 Hashing

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Computers, Materials & Continua 2023年第1期74卷 733-749页

作者： salwa M.Serag Eldin Ahmed Sedik Sultan S.Alshamrani Ahmed M.Ayoup Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Robotics and Intelligent Machine Faculty of Artificial IntelligentKafrelsheikh UniversityEgypt Department of Information Technology College of Computer and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Electrical Communications Engineering Faculty of EngineeringMinia UniversityMinia61111Egypt

In this paper,a novel cancellable biometrics technique calledMulti-Biometric-Feature-Hashing(MBFH)is *** MBFH strategy is utilized to actualize a single direction(non-invertibility)biometric *** is a typical model security conspire that is distinguished in the utilization of this protection insurance framework in numerous sorts of biometric feature strategies(retina,palm print,Hand Dorsum,fingerprint).A more robust and accurate multilingual biological structure in expressing human loneliness requires a different format to record clients with inseparable comparisons from individual biographical *** may raise worries about their utilization and security when these spread out designs are subverted as everybody is acknowledged for another biometric *** proposed structure comprises of four sections:input multi-biometric acquisition,feature extraction,Multi-Exposure Fusion(MEF)and secure hashing calculation(SHA-3).Multimodal biometrics systems that are more powerful and precise in human-unmistakable evidence require various configurations to store a comparative customer that can be contrasted with biometric wellsprings of *** top words,biometrics graphs can’t be denied and change to another request for positive Identifications(IDs)while *** biometrics is may be the special procedure used to recognize this issue.

关键词： Feature extraction multi-biometrics SHA-3 MEF

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