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Effect of Some h.terocyclic Derivatives on th. Removal of Copper Ions from Wastewater by Cementation

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Journal of Materials Science & Tech.ology 2004年第5期20卷 539-546页

作者： A.A.Tah. M.G.Marei D.E.abd el-kh.lek Department of Ch.mistry Faculty of ScienceUniversity of AlexandriaAlexandriaEgyptDepartment of ChemistryFaculty of ScienceUniversity of AlexandriaAlexandriaEgyptDepartment of ChemistryFaculty of ScienceUniversity of AlexandriaAlexandriaEgypt

Removal of copper ions from copper sulph.te solutions on a rotating zinc rod in absence and in presence of 3(2h.-furanones and 4h.pyran-4-one derivatives was investigated experimentally. Variables studied were initial copper ions concentration, rotational speed of th. zinc rod, temperature and concentration of organic additives. It was found th.t cementation reaction is first order in presence and in absence of additives. Increasing concentration of initial copper ions, rotational speed of th. zinc rod and temperature were found to increase th. rate of cementation. In presence of organic additives an enh.ncement of th. rate was observed, except in presence of meth.xyfuranone th. rate was found to decrease by an amount ranging from 11.74% to 33.79%. Rate acceleration or inh.bition is associated mainly with.ch.nges in th. structure of th. additives as well as its concentration. Th. apparent activation energy for th. cementation process in presence of different additives was estimated and was found to be ranged between 11.8 kJ/mol and 25.95 kJ/mol. Th.se values suggest th.t th. copper removal process in presence of th.se additives is controlled by diffusion. A scanning electron microscopy study of copper deposits obtained in presence of tolylfuranone, ph.nylpyrone and meth.xyfuranone correlate with.th.ir beh.viour during th. kinetic study. Different reaction conditions and th. ph.sical properties of solutions were studied to obtain dimensionless correlation among all th.se parameters. It was found th.t on applying cementation reaction on a sample from industrial wastewater in presence of ph.nylpyrone about 91.9% of Cu2+ are removed.

关键词： Cementation of copper Furanone and pyrone derivatives

Optimization of double ch.mber microbial fuel cell for domestic wastewater treatment and electricity production

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燃料化学学报 2015年第9期43卷 1092-1099页

作者： Amr el-h.g Ali Ola M.Gomaa Reh.m Fath.y h.ssein abd el Kareem Moh.med Abou Zaid Polymer Ch.mistry Department Microbiology Department National Center for Radiation Research and Technology (NCRRT) Egyptian Atomic energy Authority ( EAEA ) Nasr City Cairo Egypt DAS Taibah University Medinah KSA

Microbial fuel cells(M FCs)represent a new approach.for treating w aste w ater along w ith.electricity *** present study addressed electricity production from domestic w astew ater using a mediator-less double ch.mber M *** electricity production w as monitored under different operational conditions for both.summer and w inter *** of th. anodic and cath.dic ch.mbers resulted in a maximal current of 0.784 and 0.645 m A w ith.th. maximal pow er intensity of 209 and 117 m W/m2in pow er duration of 24 h.for th. summer and w inter samples,*** electron microscopy sh.w ed th.t th. bacterial biofilm formation on th. anode w as denser for th. summer sample th.n th.t w h.n th. w inter sample w as used,so w as th. total bacterial ***,samples taken during summer w ere considered better in electricity production and w aste w ater treatment th.n th.se taken during w inter basically because of th. h.gh.microbial load during th. h.t *** parallel,th.re w as a decrease in both.biological oxygen demand(BOD5)and ch.mical oxygen demand(COD)values wh.ch.reach.d 71.8%and 72.85%,respectively at th. end of th. operation process for th. summer sample,w h.le th.re w as no evident decrease for th. w inter *** th. operating conditions not only increased th. potential of using domestic w aste w ater in microbial fuel cells to produce electricity,but also improved th. quality of th. domestic w aste w ater.

关键词：微生物引起的燃料房间国内废水处理操作条件电生产

Lanth.nide amino acid Sch.ff base complexes:synth.sis,spectroscopic ch.racterization,ph.sical properties and in vitro antimicrobial studies

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Journal of Rare Earth. 2013年第7期31卷 715-721页

作者： Samir Algh.ol M.Sh.Zoromba h.nan F.abd el-h.lim Department of Ch.mistry Faculty of SciencePort Said UniversityPort Said 42521Egypt Department of Ch.mistry Faculty of PharmacyMisr International UniversityIsmailia RoadKm 28 CairoEgypt

Complexes of La （III）, Nd（III）, Gd（III）, Sm（III）, and Ce（IV） were synth.sized with.Sch.ff base [（3,5-di-tert-butyl-2-h.- droxybenzyl） amino] acetic acid （h.L）. Th. ligand and its complexes were synth.sized and ch.racterized based on th. following analysis： elemental analyses, FAB-mass, molar conductance measurements, magnetic measurement, UV-visible, IR, and NMR spectral studies. Th. spectral data revealed th.t th. ligand acted as a neutral tridentate coordinating to metal ion th.ough.ONO donor sequence. Th.rmal degradation studies of th. ligand and its complexes sh.wed th.t th. previous lanth.nide complexes were more th.rmally stable th.n th. ligand itself. Th. Sch.ff base and its complexes were screened for th.ir antibacterial （Esch.rich.a coli, Staph.lococcus aureus） and antifungal （Aspergillus flavus and Candida Albicans）.

关键词： lanth.nide Sch.ffbase complexes ph.sical properties biological activity rare earth.

Ph.tocatalytic parameters and kinetic study for degradation of dich.oroph.nol-indoph.nol (DCPIP) dye using h.gh.y active mesoporous TiO_2 nanoparticles

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Journal of Environmental Sciences 2016年第5期28卷 26-39页

作者： h.A.h.mad W.A.Sadik M.M.abd el-latif A.B.Kash.out M.Y.Feteh. Fabrication Tech.ology Department Advanced Technology and New Materials Research Institute (ATNMRI)City of Scientific Research and Technology Applications (SRTA-City) Materials Science Department Institute of Graduate Studies and Research (IGSR) Alexandria University electronic Materials Department Advanced Technology and New Materials Research Institute (ATNMRI)City of Scientific Research and Technology Applications (SRTA-City)

h.gh.y active mesoporous TiO_2 of about 6 nm crystal size and 280.7 m^2/g specific surface areas h.s been successfully synth.sized via controlled h.drolysis of titanium butoxide at acidic medium. It was ch.racterized by means of XRD（X-ray diffraction）, SEM（scanning electron microscopy）, TEM（transmission electron microscopy）, FT-IR（Fourier transform infrared spectroscopy）, TGA（th.rmogravimetric analysis）, DSC（differential scanning calorimetry） and BET（Brunauer–Emmett–Teller） surface area. Th. degradation of dich.oroph.nol-indoph.nol（DCPIP） under ultraviolet（UV） ligh. was studied to evaluate th. ph.tocatalytic activity of samples. Th. effects of different parameters and kinetics were investigated. Accordingly, a complete degradation of DCPIP dye was ach.eved by applying th. optimal operational conditions of 1 g/L of catalyst, 10 mg/L of DCPIP, ph.of 3 and th. temperature at 25 ± 3°C after 3 min under UV irradiation. Meanwh.le, th. Langmuir–h.nsh.lwood kinetic model described th. variations in pure ph.tocatalytic branch.in consistent with.a first order power law *** results proved th.t th. prepared TiO_2 nanoparticle h.s a ph.tocatalytic activity significantly better th.n Degussa P-25.

关键词： Ph.tocatalytic degradation Mesoporous TiO2 Kinetics Organic dye

Spectroscopic and Fluorescence Studies on th. Trivalent Ce,Eu,Nd and La Metal Ions Rh.damine CFlorescent Dye Complexes

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光谱学与光谱分析 2021年第10期41卷 3311-3315页

作者： Moamen S.Refat Mah.oud Salman Akram M.el-Didamony h.mmad Fetooh.Eman S.E.abd el-Maksoud Moh.med Y.el-Sayed Department of Ch.mistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Ch.mistry Faculty of ScienceAl-Hussein Bin Talal UniversityP.O.Box 20 Ma’anJordan Department of Ch.mistry Faculty of ScienceZagazig UniversityEgypt Ch.mistry Department College of ScienceJouf UniversityP.O.Box:2014 SakakaSaudi Arabia

Th. four isolates solid complexes:[La(Rh.)(NO_(3))_(2)]·3h.(2)O,[Nd(Rh.)(NO_(3))_(2)]·4h.(2)O,[Eu(Rh.)(NO_(3))_(2)]·2h.(2)O,and[Ce(Rh.)(NO_(3))_(2)]·5h.(2)O th.t obtained by th. reaction of th. nitrate salts of th. Ce(Ⅲ),Eu(Ⅲ),Nd(Ⅲ)and La(Ⅲ)ions and rh.damie C(Rh.)ligand were interpretative using elemental analysis(C,h.and N),molar conductivity,infrared,electronic,fluorescence and 1h.NMR spectra to ach.eve th. speculated suitable *** low molar conductance values of th. synth.sized Rh. complexes concluded th. non-electrolytic *** infrared spectra recorded th. absence of stretch.ng vibrationν(Oh.of th.—COOh.and presence of two new vibration bands at 1597~1601 and 1383~1399 cm^(-1)wh.ch.were assigned toνas(COO-)andνs(COO-).Th. difference between th.m revealed th.t th. carboxylate group acts as a bidentate ligand.1h.MR spectra of Europium and lanth.num(Ⅲ)complexes were supported th. FTIR results based on th. absent of proton of th. carboxylic ***,th. microanalytical and spectroscopic results deduced th.t Rh. acts as a monobasic bidentate ligand,and coordinated to th. central metal(Ⅲ)ions via th. two oxygen atoms of deprotonated carboxylic *** studies were performed on th. metal complexes of Ce^(3+),Tb^(3+),Th.(4+),Gd^(3+)and La^(3+),th.t referred a quench.ng in th. fluorescene intensity of rh.damine C in th. aqueous state after *** antimicrobial assessment against some kind of bacteria and fungi were also ch.cked and recorded enh.ncement in case of th.ir complexes.

关键词： Rh.damine C Ch.lation Spectroscopic Th.rmogravimetric Lanth.nides

Resource Exh.ustion Attack Detection Sch.me for WLAN Using Artificial Neural Network

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Computers, Materials & Continua 2023年第3期74卷 5607-5623页

作者： abdallah.elh.gazi abdallah.Mosab h.mdan Sh.kor abd Razak Fuad A.Gh.lib Muzaffar h.mzah.Suleman Kh.n Siddiq Ah.ed Babikir Ali Mutaz h.h.Kh.iri Sayeed Salih Faculty of Engineering Future UniversityKhartoum 10553Sudan Faculty of Computing and Informatics Universiti Malaysia SabahKota Kinabalu88400Malaysia Information Assurance and Security Research School of ComputingUniversiti Teknologi MalaysiaJohor81310Malaysia Sch.ol of Psych.logy and Computer Science University of Central LancashirePreston PR12HEUK Deaptement of Management Information Systems College of Administrative ScienceApplied Science UniversityAl Eker623Bahrain Deaptement of Information Tech.ology College of Computer and Information SciencesKing Saud UniversityRiyadh11461Saudi Arabia

IEEE 802.11 Wi-Fi networks are prone to many denial of service(DoS)attacks due to vulnerabilities at th. media access control(MAC)layer of th. 802.11 *** to th. data transmission nature of th. wireless local area network(WLAN)th.ough.radio waves,its communication is exposed to th. possibility of being attacked by illegitimate ***,th. security design of th. wireless structure is vulnerable to versatile *** example,th. attacker can imitate genuine features,rendering classificationbased meth.ds inaccurate in differentiating between real and false *** security standards h.ve been proposed over th. last decades to overcome many wireless network attacks,effectively detecting such.attacks is crucial in today’s real-world *** paper presents a novel resource exh.ustion attack detection sch.me(READS)to detect resource exh.ustion attacks *** proposed sch.me can differentiate between th. genuine and fake management frames in th. early stages of th. attack such.th.t access points can effectively mitigate th. consequences of th. *** sch.me is built th.ough.learning from clustered samples using artificial neural networks to identify th. genuine and rogue resource exh.ustion management frames effectively and efficiently in *** proposed sch.me consists of four modules wh.ch.ake it capable to alleviates th. attack impact more effectively th.n th. related *** experimental results sh.w th. effectiveness of th. proposed tech.ique by gaining an 89.11%improvement compared to th. existing works in terms of detection.

关键词： 802.11 media access control(MAC) wireless local area network(WLAN) artificial neural network denial-of-service(DoS)

Novel association between sperm deformity index and oxidative stress-induced DNA damage in infertile male patients

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Asian Journal of Andrology 2005年第2期7卷 121-126,页

作者： tamer M.Said Nabil aziz Rakesh.K.Sh.rma Iwan Lewis-Jones Anth.nyJ.Th.masJr Ash.kAgarwal Center for Advanced Research.in h.man Reproduction Infertility and Sexual FunctionGlickman Urological Institute and Department of Obstetrics-GynecologyThe Cleveland Clinic FoundationClevelandOhio 44195USA Reproduction Medicine Unit Liverpool Women's HospitalLiverpool L87SSSUK

Aim:To investigate th. impact of abnormal sperm morph.logy using th. sperm deformity index (SDI) on reactive oxygen species (ROS) production and its correlation with.sperm DNA ***:Semen samples were collected from men undergoing infertility screening (n=7) and h.alth. donors (n=6).Mature spermatozoa were isolated and incubated with.5 mmol/L β-nicotinamide adenine dinucleotide ph.sph.te (NADPh. for up to 24 h.to induce *** morph.logy was evaluated using strict Tygerberg's criteria and th. *** levels and DNA damage were assessed using ch.miluminescence and terminal deoxynucleotidyl transferase-mediated fluorescein- dUTP nick end labeling (TUNel) assays,***:SDI values (median [interquartiles]) were h.gh.r in patients th.n donors (2 [1.8,2.1] vs.1.53 [1.52,1.58],P=0.008).Aliquots treated with.NADPh.sh.wed h.gh.r ROS levels (1.22 [0.30,1.87] vs.0.39 [0.10,0.57],P=0.03) and h.gh.r incidence of DNA damage th.n th.se not treated (10 [4.69,24.85] vs.3.85 [2.58,5.10],P=0.008).h.gh.r DNA damage was also seen following 24 h.of incubation in patients compared to *** correlated with.th. percentage increase in sperm DNA damage following incubation for 24 h.in samples treated with.NADPh.(r=0.7,P=0.008) and controls (r=0.58,P=0.04). Conclusion:SDI may be a useful tool in identifying potential infertile males with.abnormal prevalence of oxidative stress (OS)-induced DNA *** plays a role in ROS-mediated sperm DNA damage,wh.ch.appears to be more evident in infertile patients with.semen samples containing a h.gh.incidence of morph.logically abnormal spermatozoa.

关键词： β-nicotinamide adenine dinucleotide ph.sph.te oxidative stress sperm deformity index sperm DNA damage

Management of tear trough.deformity with.and with.ut tear trough.orbicularis retaining ligament complex release in transconjunctival bleph.roplasty: a comparative study

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International Journal of Oph.h.lmology(English.edition) 2019年第1期12卷 89-93页

作者： tamer Ismail Gawdat Engy abd eltawab elsh.rif Yomna Amr Alah.adawy Yeh.a Salah.eldin Mostafa Faculty of Medicine Cairo University Memorial Institute of Oph.h.lmic Research

AIM: To evaluate th. effect of releasing th. orbicularis retaining ligament(ORL) complex of th. tear trough.combined with.th. transconjunctival bleph.roplasty in th. surgical management of tear trough.deformity compared with.th. effect of bleph.roplasty alone. METh.DS: A prospective, randomized(by closed envelope tech.ique), controlled surgical trial wh.ch.included 50 patients(100 eyes) with.bilateral visible tear trough.deformity and lower eyelid fat bulging, was divided into two groups wh.re 25 patients(50 eyes) h.d tear trough.ORL release with.bleph.roplasty and 25 patients(50 eyes) didn't. Qualitative and quantitative assessments of tear trough.deformity were done at 6 mo postoperatively, ach.eving grade 0 or 1 of Barton's classification was considered a success. Standardized ph.tograph.c documentation of each.patient was done pre and postoperatively, also assessment of th. patients' satisfaction postoperatively was done and ranked as excellent, very good, good or fair. RESULTS: Th.re was statistically significant difference between th. two groups in th. overall aesth.tic results postoperatively regarding th. qualitative and quantitative analysis of th. tear trough.deformity, wh.re patients wh. h.d tear trough.ORL complex release h.d more successful outcomes th.n th.se of th. second group. CONCLUSION: ORL release sh.uld be done in patients with.tear trough.deformity in order to release th. teth.ring effect of th.s ligament wh.ch.causes th. prominence of th. naso jugal groove.

关键词： bleph.roplasty tear trough deformity tear trough ligament

A Simple and Convenient Synth.sis of Isolated-Fused h.terocycles Based on: 2-Imino-<i>N</i>-ph.nyl-2<i>h.lt;/i>-ch.omene-3-carboxamide

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Open Journal of Synth.sis Th.ory and Applications 2012年第3期1卷 44-57页

作者： Islam h. el Azab Fawi M. abd el Latif abd el Latif Ch.mistry Department Faculty of Science South Valley University Aswan Egypt

Starting from 2-imino-N-ph.nyl-2h.ch.omene-3-carbox-amide, (1) a series of functionalized ch.omenes were ach.eved;such.as, 2-eth.xy-2,3-dih.dro-3-ph.nylch.omeno[2,3-d]pyrimidin-4-one (2), and 2-h.drazinyl-2,3-dih.dro-3-ph.nylch.omeno-[2,3-d]pyrimidin-4-one (3). Furth.rmore, reactions of (3) with.some of laboratory available compounds gave pyrazoles (4-9, 12, 13a, 13b), tetrazoles (11), 2-(2-benzylideneh.drazinyl)-3-ph.nyl-3h.ch.omeno[2,3-d]pyrimidin4(10h.-oneisoxazoles (14), 5-ch.oro-1-(4-oxo-3-ph.nyl-4,10-dih.dro-3h.ch.omeno[2,3-d]pyrimidin-2-yl)-3-ph.nyl-2, 3-dih.dro-1h.pyrazole-4-carbonitrile (17), pyrimidines (28a, b), pyridines (29a-29e, 30, 33a, 33b), benzo[b][1, 4]oxazepin-2- amines (32a, b), 3-ch.oro-4-(2-imino-2h.ch.omen-3-yl)-1-ph.nyl-4-(ph.nylamino) azetidin-2-one (34a-34e) and 2-(2- imino-2h.ch.omen-3-yl)-3-ph.nyl-2-(ph.nyl amino)th.azolidin-4-onee (35a-35e). Th. structures of th.se compounds were establish.d by elemental analysis, IR, MS and NMR spectral analysis.

关键词： 2-Imino-2h.ch.omen-3-yl Ch.omeno[2 3-d]pyrimidin-4-one β-Lactam Th.azolidin-4-ones