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Spectrofluorimetric and Spectrophotometric Stability- Iwndicating Methods for the Analysis of Veralipride in Presence of Its Degradants and in Spiked Human Plasma

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Chinese Journal of Chemistry 2012年第1期30卷 183-189页

作者： Salama,Nahla Nour El Din Ahmed Salem,Maissa Yacoub Abd El Halim,Lobna Mohammed abdel fattah,laila ei-sayed National Organization for Drug Control and Research(NODCAR) 6 Abu Hazem StreetPyramids AveP.O.Box 29GizaEgypt Analytical Chemistry Department Faculty of PharmacyCairo UniversityCairoEgypt Analytical Chemistry Department Faculty of PharmacyMisr University for Science and Technology6th of OctoberEgypt

Spectrofluorimetric and spectrophotometric stability-indicating methods were developed and validated for analysis of veralipride （Ver） in presence of its hydrolytic and oxidative degradants. The spectrofluorimetric method was based on direct measurement of the intrinsic fluorescence of Ver at 366 nm after excitation at 299 nm using sodium lauryl sulfate （SLS） as micelle enhancer. The fluorescence intensity plot was linear over the concentration range 1.0-10.0 ***-1. The high sensitivity of the method allowed its successful application to the analysis of Ver in spiked human plasma. Two other methods were developed. They are based on the oxidative coupling reac- tion of Vet with 3-methyl benzothiazolin-2-one hydrazone （MBTH） hydrochloride in presence of ceric ammonium sulphate in an acidic medium. The first method depends on spectrophotometric measurement of the stable green colored oxidative coupling product at 660 nm. The different experimental parameters affecting the reaction were optimized. Linearity range is 10.0--100.0 ~tgomL-1. The second method depends on a fluorescence quenching effect of Vet on the fluorescence of Ce3＋. The difference in fluorescence intensity was measured at 380 nm after excitation at 300 nm. This method is applicable over the concentration ranges 0.25-2.50 pg-mL-1. The methods were validated according to the ICH guidelines. They were successfully applied for the analysis of Ver in drug substance, drug product and in laboratory prepared mixtures containing different percentages of hydrolytic and oxidative degradants.

关键词： veralipride micelle-enhanced fluorescence MBTH validation stability fluorescence quenching Ce3+

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Ultralong hydroxyapatite-based forward osmosis membrane for freshwater generation

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Frontiers of Chemical Science and Engineering 2024年第9期18卷 37-49页

作者： Mohamed Gamal Gomaa Hamdy Maamoun abdel-Ghafar Francesco Galiano Francesca Russo Alberto Figoli El-sayed Ali abdel-Aal abdel-Hakim Taha Kandil Bahaa Ahmed Salah Central Metallurgical Research and Development Institute(CMRDI) 11421 CairoEgypt Chemistry Department Faculty of ScienceHelwan University11795 CairoEgypt Institute on Membrane Technology(CNR-ITM) 87036 RendeItaly

Increasing global water shortages are accelerating the pace of membrane manufacturing,which generates many environmentally harmful *** challenges need a radical rethink of developing innovative membranes that can address freshwater production without generating environmentally harmful *** work utilized the synthesized ultra-long hydroxyapatite(UHA)by the solvothermal method using the green solvent oleic acid in preparing UHA-based forward osmosis *** membranes were developed using different loading ratios of graphene oxide(GO)by vacuum-assisted filtration *** prepared GO/UHA membranes were identified using X-ray diffraction,scanning electron microscope,Fourier-transform infrared spectroscopy,and X-ray photoelectron *** contact angle and pore size distribution were determined for the obtained GO/UHA *** obtained hierarchical porous structure in the prepared membranes with interconnected channels results in a stable water flux with reverse salt *** best water flux rate of 42±2 L·m^(–2)·h^(–1)was achieved using the 50 mg GO/UHA membrane,which is 3.3 times higher than the pristine membrane,and a reverse salt flux of 67 g·m^(-2)·h^(–1).The obtained results showed a promising capability of a new generation of sustainable inorganic-based membranes that can be utilized in freshwater generation by energy-efficient techniques such as forward osmosis.

关键词： forward osmosis ultra-long hydroxyapatite graphene oxide inorganic-based membrane

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The combined effects of farm yard manure and boron application on growth,and oil quality of Canola grown under newly reclaimed soils

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Oil Crop Science 2024年第1期9卷 53-59页

作者： Farid Hellal Saied El sayed Amany abdel Mohsen Ramadan Doaa M.Abobasha Plant Nutrition Department National Research Centre33 El-Behouth St12622DokkiCairoEgypt Botany Department National Research Centre33 El-Behouth St12622DokkiCairoEgypt

Two field experiments were conducted during the main seasons of 2021/2022 at the Research and Production Station of National Research Centre in Egypt to investigate the effects of farmyard manure(FYM)and boron on Canola growth,yield,oil yield,and *** results unequivocally demonstrated that the combined application of FYM at a rate of 14.4 ton ha^(-1)with a foliar spray of boron at 100 ppm positively influenced plant characteristics,leading to enhanced growth rates and higher yields compared to the control ***,this integrated approach significantly improved nutrient content by enhancing levels of oil content,carbohydrates,proteins,phenolics,flavonoids,and total soluble *** findings provide compelling evidence that utilizing farm manure along with boron can effectively enhance Canola properties in newly reclaimed soils while promoting sustainable agricultural practices.

关键词： Oil quality Farmyard manure Phytochemical content Canola Yield production

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Experimental validation of double-fed induction generator in oscillating water column using circulatory system-based optimization

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Clean Energy 2024年第2期8卷 127-143页

作者： Basem E.Elnaghi Ahmed M.Ismaiel Fathy El sayed abdel-Kader Reham H.Mohammed M.N.Abelwhab Electrical Power and Machine Department Suez Canal UniversityIsmailiaEgypt Electrical Power and Machine Department Menoufia UniversityMenoufiaEgypt Computer and Control Department Suez Canal UniversityIsmailiaEgypt

This paper validates the optimal operation for a grid-connected double-fed induction generator(DFIG)in an oscillating water column power plant(OWCPP).This study presents a novel optimization technique called the circulatory system-based optimization(CSBO)approach to develop six adaptive fuzzy logic controllers(AFLCs)with 30 parameters and compare them to chaotic-billiards optimization(C-BO)and genetic algorithm(GA).The proposed controller is also compared with a proportional-integral differential(PID)controller based on a self-adaptive global-best harmony search(SGHS).CSBO-based AFLCs are fully investigated under different scenarios and experimented with using a real-time interface *** results of using CSBO-AFLCs revealed a fast time response,fast convergence,less overshoot and minimal error compared with those achieved with C-BO-AFLC,SGHS-PID and GA-AFLC during different case *** CSBO-based AFLCs ensure maximum power from the DFIG in an OWCPP and enhance dynamic response with very low *** results show that the CSBO shows better power tracking by 25%as compared with C-BO,by 45%when compared with the GA and by 56%when compared with ***,the integral absolute errors of six controllers are investigated to demonstrate the feasibility of *** root mean square of the errors of six controllers using CSBO is improved by 68.27%when compared with GA,by 22.57%when compared with C-BO and by 38.42%when compared with *** indicators demonstrate the feasibility of CSBO when compared with other algorithms with the same OWCPP.

关键词： circulatory system-based optimization approach adaptive fuzzy logic controller grid-tied oscillating water column power plant maximum power point tracking

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Statistical Analysis with Dingo Optimizer Enabled Routing for Wireless Sensor Networks

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Computers, Materials & Continua 2022年第11期73卷 2865-2878页

作者： Abdulaziz S.Alghamdi Randa Alharbi Suliman A.Alsuhibany sayed abdel-Khalek Department of Mathematics College of Science&ArtsKing Abdulaziz UniversityRabigh21911Saudi Arabia Department Statistics College of ScienceUniversity of TabukTabukSaudi Arabia Department of Computer Science College of ComputerQassim UniversityBuraydah51452Saudi Arabia Department of Mathematics and Statistics College of ScienceTaif UniversityTaif21944Saudi Arabia Mathematics Department Faculty of ScienceSohag UniversitySohag82524Egypt

Security is a vital parameter to conserve energy in wireless sensor networks(WSN).Trust management in the WSN is a crucial process as trust is utilized when collaboration is important for accomplishing trustworthy data *** the available routing techniques do not involve security in the design of routing *** study develops a novel statistical analysis with dingo optimizer enabled reliable routing scheme(SADO-RRS)for *** proposed SADO-RRS technique aims to detect the existence of attacks and optimal routes in *** addition,the presented SADORRS technique derives a new statistics based linear discriminant analysis(LDA)for attack detection,Moreover,a trust based dingo optimizer(TBDO)algorithm is applied for optimal route selection in the WSN and accomplishes secure data transmission in ***,the TBDO algorithm involves the derivation of the fitness function involving different input variables of *** demonstrating the enhanced outcomes of the SADO-RRS technique,a wide range of simulations was carried out and the outcomes demonstrated the enhanced outcomes of the SADO-RRS technique.

关键词： Statistical analysis reliability routing wireless sensor networks linear discriminant analysis dingo optimizer security

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Pharmacological effects of ethanol extract of Egyptian Artemisia herba-alba in rats and mice

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Asian Pacific Journal of Tropical Biomedicine 2016年第1期6卷 44-49页

作者： Gehad abdel Raheem abdel Jaleel Heba Mohammed Ibrahim Abdallah Nawal E.L.sayed Gomaa Pharmacology Department National Research Centre

Objective:To investigate some pharmacological effects including gastroprotective,antiinflammatory,analgesic,antipyretic and in vitro antioxidant effects of Artemisia herbaalba extract in different experimental ***:Inflammation was induced in rat paw by subcutaneous injection of 1%(v/v)carrageenan *** was induced in mice by intraperitoneal injection of 0.6%(v/v) acetic acid *** was induced using Brewer's yeast *** lesion was induced in rats by oral administration of 99% *** anti-inflammatory,analgesic,antipyretic and gastroprotective activities of Artemisia herba-alba extract were investigated *** vitro antioxidant effect was investigated using DPPH free ***:The plant extract showed anti-inflammatory effect in carrageenan-induced paw edema in rats,analgesic effect against acetic acid-induced writhing,and antipyretic activity in Brewer's yeast model of ***,it was shown to be a gastroprotective agent against ethanol-induced gastric *** plant also exhibited a free radical scavenging potential in an in vitro antioxidant study using ***:The results validate the use of the investigated plant in traditional medicine for different ailments.

关键词： Artemisia herba-alba Gastric ulcer Inflammation Antioxidant Rats Mice

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A geometric phase for superconducting qubits under the decoherence effect

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Chinese Physics B 2013年第10期22卷 88-93页

作者： S.abdel-Khalek K.Berrada Mohamed A.El-sayed M.Abel-Aty Mathematics Department Faculty of ScienceSohag University82524 SohagEgypt Mathematics Department Faculty of ScienceTaif UniversityTaifSaudi Arabia Al Imam Mohammad Ibn Saud Islamic University (IMSIU) College of ScienceDepartment of PhysicsRiyadhSaudi Arabia The Abdus Salam International Centre for Theoretical Physics Strada Costiera 11Miramare-TriesteItaly Laboratoire de Physique The'orique Faculte' des SciencesUniversite' Mohammed V-AgdalAvenue Ibn BattoutaBote Postale 1014Agdal RabatMorocco Informatics Department Faculty of ScienceTaif UniversityTaifSaudi Arabia

We propose a relaxation rate or dissipative cavity-based parameters that can be used as indicators of the stationary limit of a mixed state geometric phase. We perform our considerations for the system of a superconducting qubit in an open transmission line or interacting with a dissipative cavity. This system is very useful for performing an effective quantum computation by exhibiting the long collapse time of the geometric phase. It is shown that the geometric phase in the stationary limit does not depend on interaction time if the decay time exceeds an upper bound.

关键词： superconducting-qubit meometric phase mixed state decoherence

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Competitive Swarm Optimization with Encryption Based Steganography for Digital Image Security

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Computers, Materials & Continua 2022年第8期72卷 4173-4184页

作者： Ala’A.Eshmawi Suliman A.Alsuhibany sayed abdel-Khalek Romany F.Mansour Department of Cybersecurity College of Computer Science and EngineeringUniversity of JeddahJeddahSaudi Arabia Department of Computer Science College of ComputerQassim UniversityBuraydah51452Saudi Arabia Department of Mathematics College of ScienceTaif UniversityTaif21944Saudi Arabia Department of Mathematics Faculty of ScienceNew Valley UniversityEl-Kharga72511Egypt

Digital image security is a fundamental and tedious process on shared communication *** methods have been employed for accomplishing security on digital image transmission,such as encryption,steganography,and *** stenography and encryption are commonly used models to achieve improved ***,optimal pixel selection process(OPSP)acts as a vital role in the encryption *** this motivation,this study designs a new competitive swarmoptimization with encryption based stenographic technique for digital image security,named CSOES-DIS *** proposed CSOES-DIS model aims to encrypt the secret image prior to the embedding *** addition,the CSOES-DIS model applies a double chaotic digital image encryption(DCDIE)technique to encrypt the secret image,and then embedding method was ***,the OPSP can be carried out by the design of CSO algorithm and thereby increases the secrecy *** order to portray the enhanced outcomes of the CSOES-DIS model,a comparative examination with recent methods is performed and the results reported the betterment of the CSOES-DIS model based on different measures.

关键词： Image security optimal pixel selection encryption metaheuristics image steganography

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Mineralogy,Chemical Characteristics and Upgrading of Beach Ilmenite of the Top Meter of Black Sand Deposits of the Kafr Al-Sheikh Governorate,Northern Egypt

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Acta Geologica Sinica(English Edition) 2017年第4期91卷 1326-1338页

作者： abdel-Aal M. abdel-KARIM Mohamed I. MOUSTAFA Adel H. ei-AFANDY Mohamed G. BARAKAT Faculty of Science Zagazig University Egypt Engineering Colleges Northern Border University Saudi Arabia Nuclear Materials Authority P. O. Box 530 Maadi Cairo Egypt

Egyptian beach ilmenite occurs in a relatively high content in the naturally highly concentrated superficial black sand deposits at specific beach zones in the northern parts of the Nile Delta at Rosetta. Microscopic study shows that the ilmenite occurs as fresh homogeneous black or heterogeneous multicoloured altered grains and exhibits three types （homogeneous, exsolved and altered） of ilmenite varieties. XRD data of ilmenite indicates their association with minor hematite and quartz, whereas leucoxene shows its association with Nb-rutUe, pseudorutile and hematite. Grain size distribution suggests a very fine sand size of 〉89% and 80% and a fine sand size of 10.5% and 18.3% for fresh and altered ilmenites, respectively. The density of fresh, altered ilmenite and leucoxene concentrates varies from 2.70, 2.50 to 2.40 ton/m^3, suggesting a gradual decrease from high grade fresh to leucoxene and consistent with variation in magnetic susceptibility as a consequence of the leaching of iron. Mass magnetic susceptibility reveals 97.6% of ilmenite and 92% of the altered form are obtained at 0.20 and 0.48 ampere. Fresh iimenite exhibits variable TiO2 （47.18%） and Fe2O3^T （46.10%） with minor MnO, MgO and Cr2O3 （1.22, 1.10 and 0.51%）. The altered ilmenite is higher in TiO2 （76.16%） and SiO2 （4.68%） and lower in Fe2O3^T （14.45%）, MnO, MgO and Cr2O3 （0.39, 0.52 and 0.11%） compared with the fresh form. Three concentrates of ilmenites （G1, G2 and G3） were prepared from crude ore using a Reading cross belt magnetic separator under different conditions, revealing a gradual increase of TiO2, SiO2, Al2O3 and CaO accompanied by a decrease of Fe2O3^T, MgO and Cr2O3 with repetition of the separation processes. Several ore dressing techniques were carried out to upgrade the iimenite concentrate.

关键词： Beach ilmenite mineralogy chemistry upgrading Northern Egypt

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Meta-heuristics for Feature Selection and Classification in Diagnostic Breast Cancer

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Computers, Materials & Continua 2022年第10期73卷 749-765页

作者： Doaa Sami Khafaga Amel Ali Alhussan El-sayed M.El-kenawy Ali E.Takieldeen Tarek M.Hassan Ehab A.Hegazy Elsayed abdel fattah eid abdelhameed Ibrahim abdelaziz A.abdelhamid Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh11671Saudi Arabia Department of Communications and Electronics Delta Higher Institute of Engineering and TechnologyMansoura35111Egypt Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura35712Egypt Communications and Computers Engineering Department Faculty of EngineeringDelta University for Science and TechnologyInternational Coastal RoadGamasa CityDakhliyaEgypt Faculty of Applied Health Science Technology Delta University for Science and TechnologyMansoura35712Egypt Faculty of Medicine Head of Internal Medicine DepartmentDelta University for Science and TechnologyMansouraEgypt Computer Engineering and Control Systems Department Faculty of EngineeringMansoura University35516MansouraEgypt Department of Computer Science Faculty of Computer and Information SciencesAin Shams University11566CairoEgypt Department of Computer Science College of Computing and Information TechnologyShaqra University11961Saudi Arabia

One of the most common kinds of cancer is breast *** early detection of it may help lower its overall rates of *** this paper,we robustly propose a novel approach for detecting and classifying breast cancer regions in thermal *** proposed approach starts with data preprocessing the input images and segmenting the significant regions of *** addition,to properly train the machine learning models,data augmentation is applied to increase the number of segmented regions using various scaling *** the other hand,to extract the relevant features from the breast cancer cases,a set of deep neural networks(VGGNet,ResNet-50,AlexNet,and GoogLeNet)are *** resulting set of features is processed using the binary dipper throated algorithm to select the most effective features that can realize high classification *** selected features are used to train a neural network to finally classify the thermal images of breast *** achieve accurate classification,the parameters of the employed neural network are optimized using the continuous dipper throated optimization *** results show the effectiveness of the proposed approach in classifying the breast cancer cases when compared to other recent approaches in the ***,several experiments were conducted to compare the performance of the proposed approach with the other *** results of these experiments emphasized the superiority of the proposed approach.

关键词： Breast cancer image segmentation dipper throated optimization feature selection meta-heuristics

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