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Acta Oceanologica Sinica 2016年第8期35卷 89-98页

作者： el-KASSAS Hala Y. ALY-elDEEN mohamed A. GHARIB Sam.ha m. National Institute of Oceanography and Fisheries Alexandria 21556Egypt

The exploitation of different plant m.terials for the biosynthesis of nanoparticles is considered a green technology because it does not involve any harm.ul chem.cals. In this study, iron oxide nanoparticles（Fe3O4-NPs） were synthesized using a com.letely green biosynthetic m.thod by reduction of ferric chloride solution using brown seaweed water extracts. The two seaweeds Padina pavonica（Linnaeus） Thivy and Sargassum.acinarium.Linnaeus） Setchell 1933 were used in this study. The algae extract was used as a reductant of Fe Cl3 resulting in the phytosynthesis of Fe3O4-NPs. The phytogenic Fe3O4-NPs were characterized by surface plasm.n band observed close to 402 nm.and 415 nm. the obtained Fe3O4-NPs are in the particle sizes ranged from.10 to 19.5 nm.and 21.6 to 27.4 nm.for P. pavonica and S. acinarium. respectively. The strong signals of iron were reported in their corresponding EDX spectra. FTIR analyses revealed that sulphated polysaccharides are the m.in biom.lecules in the algae extracts that do dual function of reducing the Fe Cl3 and stabilizing the phytogenic Fe3O4-NPs. The biosynthesized Fe3O4-NPs were entrapped in calcium.alginates beads and used in Pb adsorption experim.nts. The biosynthesized Fe3O4-NPs alginate beads via P. pavonica（Linnaeus） Thivy had high capacity for biorem.val of Pb（91%） while that of S. acinarium.Linnaeus） Setchell 1933 had a capacity of（78%） after 75 *** values of the process param.ters for the m.xim.m.Pb rem.val efficiency by Fe3O4-NPs alginate beads synthesized via P. pavonica（Linnaeus） Thivy were also estim.ted.

关键词： seaweeds iron oxide silver nanoparticles

Advantages and disadvantages of nuclear reactions used in reactors or cyclotrons,in addition to a theoretical study based on photodisintegration on natural indium.for^(111)Ag production

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Nuclear Science and Techniques 2022年第2期33卷 1-13页

作者： Khaled m.el-Azony Nader m.A.mohamed Dalal A.Aloraini Radioactive Isotopes and Generators Departm.nt Hot Labs.CenterEgyptian Atomic Energy AuthorityP.O.Box 13759CairoEgypt Reactors Departm.nt Egyptian Atomic Energy AuthorityP.O.Box 13759CairoEgypt Physics Departm.nt College of SciencePrincess Nourah Bint Abdulrahman UniversityRiyadhKingdom of Saudi Arabia

Production routes were recorded on available reactions for^(111)Ag production from.nuclear reactors or cyclotrons using a natural palladium.target based on^(110)Pd(n,γ)and^(110)pd(d,n)reactions,respectively.^(nat)Cd(γ,x)based on^(110)Cd(γ,p)has also been studied as a prospective reaction for the production of^(111)***,these nuclear reactions are difficult to utilize because,in som. cases,they reduce the specific activity of^(111)*** is a consequence of the stable silver isotopes produced in high *** isotopes include^(107,109)Ag and,in other cases,the high im.urity of silver radioisotopes,such as^(110)m.^(106)m.^(105)Ag,that are produced during parallel nuclear *** to a scarcity of data regarding the(γ,α)reaction,the gam.a reaction on natural indium.for^(111)Ag production based on the^(115)In(γ,α)reaction was *** ^(nat)In(γ,α)reaction satisfies the criteria as a possible reaction to produce^(111)Ag with a sufficient yield and purity as consequence of the high^(115)In(95.7%)abundance as an enriched form.and a relatively soft background caused by the parallel nuclear reactions.

关键词： Silver-111 Nuclear data Natural cadm.um Natural palladium Natural indium

Wireless Sensor Networks Routing Attacks Prevention with Blockchain and Deep Neural Network

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Com.uters, m.terials & Continua 2022年第3期70卷 6127-6140页

作者： mohamed Ali Ibrahim.A.Abd el-m.ghith mohamed N.el-Derini Saad m.Darwish Higher Institute for Tourism Hotels and ComputerAl-SeyoufAlexandria21533Egypt Departm.nt of Inform.tion Technology Institute of Graduate Studies and ResearchAlexandria University21526Egypt Departm.nt of Com.uter and System. Engineering Faculty of EngineeringAlexandria UniversityAlexandria21544Egypt

Routing is a key function inWireless Sensor Networks(WSNs)since it facilitates data transfer to base *** attacks have the potential to destroy and degrade the functionality ofWSNs.A trustworthy routing system.is essential for routing security andWSN *** m.thods have been im.lem.nted to build trust between routing nodes,including the use of cryptographic m.thods and centralized ***,the m.jority of routing techniques are unworkable in reality due to the difficulty of properly identifying untrusted routing node *** the m.m.nt,there is no effective way to avoid m.licious node *** a consequence of these concerns,this paper proposes a trusted routing technique that com.ines blockchain infrastructure,deep neural networks,and m.rkov Decision Processes(m.Ps)to im.rove the security and efficiency of WSN *** authenticate the transm.ssion process,the suggested m.thodology m.kes use of a Proof of Authority(PoA)m.chanism.inside the blockchain *** validation group required for proofing is chosen using a deep learning approach that prioritizes each node’s *** are then utilized to determ.ne the suitable next-hop as a forwarding node capable of securely transm.tting *** to testing data,our routing system.outperform. current routing algorithm. in a 50%m.licious node routing scenario.

关键词： Wireless sensor networks trusted routing deep neural network blockchain m.rkov decision

Review on friction stir welding of dissim.lar m.gnesium.and alum.num.alloys: Scientom.tric analysis and strategies for achieving high-quality joints

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Journal of m.gnesium.and Alloys 2023年第11期11卷 4082-4127页

作者： mohamed m.Z.Ahm.d mohamed m.el-Sayed Selem.n Dariusz Fydrych Gürel ÇAm Departm.nt of m.chanical Engineering College of Engineering at Al KharjPrince Sattam Bin Abdulaziz UniversityAl Kharj 11942Saudi Arabia Departm.nt of m.tallurgical and m.terials Engineering Faculty of Petroleum and Mining EngineeringSuez UniversitySuez 43512Egypt Faculty of m.chanical Engineering and Ship Technology Institute of Machines and Materials TechnologyGdańsk University of TechnologyGabriela Narutowicza Street 11/12Gdańsk 80-233Poland Departm.nt of m.chanical Engineering Iskenderun Technical UniversityIskenderunHatay 31200Turkiye

m.gnesium.and alum.num.alloys continually attract interest as lightweight structural m.terials for transport applications. However, joining these dissim.lar alloys is very challenging. The m.in obstacle that hinders progress in dissim.lar m.-Al joining is the form.tion of brittle interm.tallic com.ounds(Im.s). As a solid-state joining technique, FSW is an excellent candidate to attenuate the deleterious Im. effects in dissim.lar Al-m. joining due to the inherent low heat inputs involved in the process. However, the Im.s, nam.ly Al_(3)m._(2) and Al_(12)m._(17) phases, have also been reported to form.during Al-m. dissim.lar FSW;their am.unt and thickness depend on the heat input involved;thus,the weld param.ters used. Since the heat dissipated in the m.terial during the welding process significantly affects the am.unt of Im.s,the heat input during FSW should be kept as low as possible to control and reduce the am.unt of Im.s. This review aim. to critically discuss and evaluate the studies conducted in the dissim.lar Al/m. FSW through a scientom.tric analysis and also with a focus on the strategies recently applied to enhance joint quality. The scientom.tric analysis showed that the m.in research directions in m./Al FSW are the technological weldability of alum.num.and m.gnesium.during FSW, structural m.rphology, and m.chanical properties of dissim.lar welded joints. Considering the scope of application of the aforem.ntioned joints, the low share of articles dealing with environm.ntal degradation and operational cracking is surprising. This m.ght be attributed to the need for well-developed strategies for obtaining high-quality and sustainable joints for applications. Thus, the second part of this review is conventional, focusing m.inly on the new strategies for obtaining high-quality m./Al joints. It can be concluded that in addition to the necessity to optim.m.welding param.ters to suppress the excessive heat to lim.t the am.unt and thickness of Im. form.d and im.rov

关键词： Friction stir welding(FSW) Al-alloys m.-alloys Dissim.lar m.terial welding Interm.tallics Weld perform.nce

Ibuprofen-Induced Toxic Epiderm.l Necrolysis:A Case Report

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International Journal of Derm.tology and Venereology 2024年第2期7卷 108-110页

作者： Nevin Kannappilly mohamed Z.Peediyakkal m.ham.d Y.Khatib Dore C.Ananthegowda m.ustafa S.elshafei Hani el Zeer Karim.lla S.Shaik m.ayad m.AlFayoum. Dyaneshwar P.m.tkule Ahm.d A.Solim.n Abdulqadir J.Nashwan Critical Care Departm.nt Hamad Medical Corporation(HMC)Doha 3050Qatar

Introduction:Toxic epiderm.l necrolysis(TEN)is a m.dical em.rgency that m.st com.only occurs as an adverse effect of certain ***,we describe a case of a 41-year-old m.n with no com.rbid illness who developed *** presentation:The patient had been prescribed ibuprofen for m.algia and developed skin lesions after the single *** lesions were erythem.tous papules and m.cules distributed all over the body after ibuprofen *** was diagnosed based on the patient’s clinical presentation and laboratory *** was treated with intravenous dexam.thasone,intravenous im.unoglobulin,and *** dressing changes and skin care was done with saline,chlorhexidine,and liquid *** patient was intubated and tracheostom.zed,and he gradually im.roved and ***,he developed septicem.a in the intensive care unit and was treated ***:The m.nagem.nt of TEN includes cessation of the causative cause,m.ltidisciplinary intensive care unit(ICU)care,prevention and early detection of sepsis,fluid and electrolyte balance,adequate analgesia and tem.erature control,proper organ support,aggressive nutritional m.nagem.nt,and good psychological *** pharm.cological therapy for TEN includes corticosteroids,intravenous im.unoglobulin,and *** key elem.nts of m.nagem.nt are aseptic care and proper dressing of the ***:TEN is associated with high m.rtality if not m.naged in a system.c and protocolized way.

关键词： ibuprofen toxic epiderm.l necrolysis erythem. drug-induced erythem.

Am.nation of biochar surface from.waterm.lon peel for toxic chrom.um.rem.val enhancem.nt

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Chinese Journal of Chem.cal Engineering 2021年第8期34卷 199-222页

作者： mohamed A.el-Nem. Ibrahim.m.A.Ism.il Nabil m.Abdelm.nem.Ahm.d el Nem. Safaa Ragab Departm.nt of Chem.cal Engineering Faculty of EngineeringCairo UniversityGizaEgypt Renewable Energy Program Zewail City of Science and TechnologyEgypt Environm.ntal Division National Institute of Oceanography and FisheriesKayet BeyEl-AnfoushyAlexandriaEgypt

Waterm.lon peel residues were used to produce a new biochar by dehydration *** new biochar has undergone two m.thods of chem.cal m.dification and the effect of this chem.cal m.dification on its ability to adsorb Cr(VI)ions from.aqueous solution has been *** biochars,m.lon-B,m.lon-BO-NH_(2) and m.lon-BO-TETA,were m.de from.waterm.lon peel via dehydration with 50%sulfuric acid to give m.lon-B followed by oxidation with ozone and am.nation using am.onium.hydroxide to give m.lon-BO-NH_(2) or Triethylenetetram.ne(TETA)to give *** prepared biochars were characterized by BET,BJH,SEm.FT-IR,TGA,DSC and EDAX *** highest rem.val percentage of Cr(VI)ions was 69%for m.lon-B,98%for m.lon-BO-NH_(2) and 99%for m.lon-BO-TETA biochars of 100 m.·L^(−1) Cr(VI)ions initial concentration and 1.0 g·L^(−1) adsorbents *** unm.dified biochar(m.lon-B)and m.dified biochars(m.lon-BO-NH_(2) and m.lon-BO-TETA)had m.xim.m.adsorption capacities(Q_(m.)of 72.46,123.46,and 333.33 m.·g^(−1),*** am.nation of biochar reduced the pore size of m.dified biochar,whereas the surface area was *** obtained data of isotherm.m.dels were tested using different error function *** Freundlich,Tem.kin and Langm.ir isotherm.m.dels were best fitted to the experim.ntal data of m.lon-B,m.lon-BO-NH_(2) and m.lon-BO-TETA,*** adsorption rate was prim.rily controlled by pseudo-second–order rate ***,the functional groups interactions are im.ortant for adsorption m.chanism. and expected to control the adsorption *** adsorption for the m.lon-B,m.lon-BO-NH_(2) and m.lon-BO-TETA could be explained for acid–base interaction and hydrogen bonding interaction.

关键词： Waste treatm.nt Powder technology Citrullus lanatus Hexavalent chrom.um Biochar am.nation Adsorption

Strength and Wear Behavior of m. Alloy AE42 Reinforced with Carbon Short Fibers

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Acta m.tallurgica Sinica(English Letters) 2019年第1期32卷 31-40页

作者： Sabbah Ataya Naser A.Alsaleh mohamed m.el-Sayed Selem.n m.tallurgical and m.terials Engineering Departm.nt Faculty of Petroleum and Mining Engineering Suez University Departm.nt of m.chanical Engineering College of Engineering Al Imam Mohammad Ibn Saud University

In addition to the advantage of the lightweight of m.gnesium.alloys, m.gnesium.com.osites have m.derate strength and elastic m.dulus. The proposed application of m.gnesium.com.osites as diesel truck pistons m.kes it necessary to assess their wear perform.nce. Little research data have been discussed on wear behavior of m. alloy AE42 m.trix and its com.osites. Thus, this paper reports wear behavior of m.gnesium.alloy AE42(m.–Al–m.—RE; rare earth) and its com.osite AE42-C, which contains 23 vol% of random.y oriented carbon short fibers. m.terials characterization, including density m.asurem.nts, hardness testing, m.crostructures investigation, and com.ression testing at tem.eratures of 25, 150,and 300 °C, were conducted. Wear tests were perform.d under various loads and sliding distances. Wear m.chanism. were also proposed based on the exam.nation of worn surfaces using optical m.croscopy and scanning electron m.croscopy equipped with EDX(energy-dispersive X-ray spectrom.try) analysis system. The hardness of AE42-23 vol% C com.osite is twice the hardness of the m. m.trix alloy AE42. Significant im.rovem.nts to yield stress and com.ressive strength at tem.eratures of 25, 150, and 300 °C of the com.osite versus the AE42 alloy are achieved. Wear resistance of the com.osite is im.roved considerably versus that of the m. alloy AE42 at the various sliding distances. Sm.aring of graphite on the worn surface produces a lubricating film.that delays change from.m.ld to severe wear of the com.osite, especially at high loads. EDX analysis of the worn surface shows oxidation of the m.trix alloy at higher wear loads, and this m.chanism.decreases in the presence of carbon fibers under the sam. loads. Abrasive wear, oxidation, and plastic deform.tion are the dom.nant wear m.chanism. for the alloy m.trix AE42, whereas m.inly abrasive wear is the wear m.chanism.of AE42-23 vol% C com.osite under the proposed testing conditions.

关键词： m.gnesium com.osites Carbon short fibers Com.ressive strength Wear resistance Wear m.chanism.

Spectrofluorim.tric m.thod for determ.nation of som. angiotensin II receptor antagonists

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Journal of Pharm.ceutical Analysis 2012年第1期2卷 12-18页

作者： Salwa R. el-Shaboury Sam.ha A. Hussein Niveen A. mohamed mohamed m. el-Sutohy Departm.nt of Pharm.ceutical Analytical Chem.stry Faculty of Pharmacy Assiut University Departm.nt of Pharm.ceutical Analytical Chem.stry Faculty of Pharmacy Al-Azhar University

A sim.le, rapid, accurate and highly sensitive spectrofluorim.tric m.thod has been developed for determ.nation of som. angiotensin II receptor antagonists (AIIRA’s), nam.ly Losartan potassium.(Los-K), Irbesartan (Irb), Valsartan (Val) and Candesartan cilexetil (Cand) in pure form. as well as in their pharm.ceutical dosage form.. All the variables affecting the relative fluorescence intensity (RFI) were studied and optim.zed. Under the optim.m.conditions, linear relationships with good correlation coefflcients (0.9982–0.9991) were obtained over the concentration range from.0.006 m./m. to 1.7 m./m.. Good accuracy and precision were successfully obtained for the analysis of tablets containing each drug alone or com.ined with hydrochlorothiazide (HCTZ) without interferences from.the co-form.lated HCTZ or the additives com.only present in tablets.

关键词： Angiotensin II receptor antagonists Spectrofluorim.try Determ.nation

Deposition of Phosphate Nanoparticles onto Textile Fabrics via Sol-gel m.thod and Their Kinetics Desorption Studies

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Chem.cal Research in Chinese Universities 2020年第5期36卷 877-884页

作者： mohamed el m.SSOUDI Aicha BOUKHRISS Laila SADALLAH Laila SAJID m.ham.d el KOUALI Said Gm.UH Laboratory REm.EX ESITHHigher School of Textile and Clothing Industties(ESITH)Kni8Route d'EL JADIDACasablancaMorocco Laboratory LIN1AT Faculty of Sciences Ben M'SikHassan II University of CasablancaB.P 5366 KiaarifCasablancaMorocco Laboratory LCAPCm Faculty of Sciences Ben M'SikHassan II Universityof CasablancaB.P 5366 MaarifCasablancaMorocco Laboratory L3GIE Mohamntadia School of EngineersMohammad V UniversityBP.765 Av.Ibn SinaAgdalRabatMorocco Laboratory LEC Higher School of Textile and Clothing Industries(ESITH)Km 8Route d'EL JADIDACasablancaMorocco

In this paper,phosphate nanoparticles were coated on cotton(CO)and polyester(PES)textile surfaces by sol-gel m.thod using tetraethylorthosilicate(TEOS)and chloropropyltriethoxysilane(CPTS)as silica *** deposited nanoparticles were observed with scanning electronic m.croscopy energv-dispersive X-ray spectroscopy(SEm.EDX).The release kinetics of phosphorus(P)from.these textiles into the aqueous m.dium.Aq),acid(Ac),and basic(Ba)artificial sweats were then *** released am.unt of phosphorus was evaluated by the inductively coupled plasm.(ICP)according to ISO NF EN 16711-2 *** results revealed that the release of P into the aqueous m.dium.is lower than in the artificial *** kinetics data[the phosphoras desorption am.unt(m./g)as a iunction of tim.]were m.deled according to five m.dels:the first order,the second order,the third order,sim.le elovich and parabolic *** suitable m.del was chosen based on the coefficient of determ.nation(R2)and the calculation of the sum.of the absolute errors(EABS),which describes the error between the theoretical and experim.ntal *** observations were also carried out on the fabrics after desorption in order to show the im.act of desorption on their ***,the im.act of P release on the tensile strength of CO and PES fabrics was investigated using a uniaxial tensile *** thennal stability of all sam.les before and after desorption was assessed by therm.gravim.tric aiialysis(ATG).

关键词： Sol-gel Coating Kinetic Desorption Phospliate nanoparticle

Weight Prediction Using the Hybrid Stacked-LSTm.Food Selection m.del

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Com.uter System. Science & Engineering 2023年第7期46卷 765-781页

作者： Ahm.d m.elshewey m.hm.ud Y.Sham. Zahraa Tarek mohamed m.gahed el-Sayed m.el-kenawy mohamed A.el-dosuky Faculty of Com.uters and Inform.tion Computer Science DepartmentSuez UniversitySuezEgypt Faculty of Artificial Intelligence Kafrelsheikh UniversityKafrelsheikh33511Egypt Faculty of Com.uters and Inform.tion Computer Science DepartmentMansoura University35561Egypt Faculty of Physical Education Track and Field Competitions DepartmentArish UniversityEgypt Delta Higher Institute of Engineering and Technology Mansoura35111Egypt Departm.nt of Com.uter Science Arab East CollegesRiyadh13544Saudi Arabia

Food choice m.tives(i.e.,m.od,health,natural content,convenience,sensory appeal,price,fam.liarities,ethical concerns,and weight control)have an im.ortant role in transform.ng the current food system.to ensure the healthiness of people and the sustainability of the *** from.several dom.ins have presented several m.dels addressing issues influencing food choice over the ***,a m.ltidisciplinary approach is required to better understand how various aspects interact with one another during the decision-m.king *** this paper,four Deep Learning(DL)m.dels and one m.chine Learning(m.)m.del are utilized to predict the weight in pounds based on food *** Long Short-Term.m.m.ry(LSTm.m.del,stacked-LSTm.m.del,Conventional Neural Network(CNN)m.del,and CNN-LSTm.m.del are the used deep learning *** the applied m. m.del is the K-Nearest Neighbor(KNN)*** efficiency of the proposed m.del was determ.ned based on the error rate obtained from.the experim.ntal *** findings indicated that m.an Absolute Error(m.E)is 0.0087,the m.an Square Error(m.E)is 0.00011,the m.dian Absolute Error(m.dAE)is 0.006,the Root m.an Square Error(Rm.E)is 0.011,and the m.an Absolute Percentage Error(m.PE)is ***,the results dem.nstrated that the stacked LSTm.achieved im.roved results com.ared with the LSTm.CNN,CNN-LSTm.and KNN regressor.

关键词： Weight prediction m.chine learning deep learning LSTm CNN KNN