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Mi.eralogy,Chemi.al Characteri.ti.s and Upgradi.g of Beach i.meni.e of the Top Meter of Black Sand Deposi.s of the Kafr Al-Shei.h Governorate,Northern Egypt

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Acta Geologi.a Si.i.a(Engli.h Edi.i.n) 2017年第4期91卷 1326-1338页

作者： Abdel-Aal M. ABDEL-KARi. mohamed i. moustafa Adel H. Ei.AFANDY mohamed G. BARAKAT Faculty of Sci.nce Zagazig University Egypt Engi.eeri.g Colleges Northern Border University Saudi Arabia Nuclear Materi.ls Authori.y P. O. Box 530 Maadi Cairo Egypt

Egypti.n beach i.meni.e occurs i. a relati.ely hi.h content i. the naturally hi.hly concentrated superfi.i.l black sand deposi.s at speci.i. beach zones i. the northern parts of the Ni.e Delta at Rosetta. Mi.roscopi. study shows that the i.meni.e occurs as fresh homogeneous black or heterogeneous multi.oloured altered grai.s and exhi.i.s three types （homogeneous, exsolved and altered） of i.meni.e vari.ti.s. XRD data of i.meni.e i.di.ates thei. associ.ti.n wi.h mi.or hemati.e and quartz, whereas leucoxene shows i.s associ.ti.n wi.h Nb-rutUe, pseudoruti.e and hemati.e. Grai. si.e di.tri.uti.n suggests a very fi.e sand si.e of 〉89% and 80% and a fi.e sand si.e of 10.5% and 18.3% for fresh and altered i.meni.es, respecti.ely. The densi.y of fresh, altered i.meni.e and leucoxene concentrates vari.s from 2.70, 2.50 to 2.40 ton/m^3, suggesti.g a gradual decrease from hi.h grade fresh to leucoxene and consi.tent wi.h vari.ti.n i. magneti. suscepti.i.i.y as a consequence of the leachi.g of i.on. Mass magneti. suscepti.i.i.y reveals 97.6% of i.meni.e and 92% of the altered form are obtai.ed at 0.20 and 0.48 ampere. Fresh i.meni.e exhi.i.s vari.ble Ti.2 （47.18%） and Fe2O3^T （46.10%） wi.h mi.or MnO, MgO and Cr2O3 （1.22, 1.10 and 0.51%）. The altered i.meni.e i. hi.her i. Ti.2 （76.16%） and Si.2 （4.68%） and lower i. Fe2O3^T （14.45%）, MnO, MgO and Cr2O3 （0.39, 0.52 and 0.11%） compared wi.h the fresh form. Three concentrates of i.meni.es （G1, G2 and G3） were prepared from crude ore usi.g a Readi.g cross belt magneti. separator under di.ferent condi.i.ns, reveali.g a gradual i.crease of Ti.2, Si.2, Al2O3 and CaO accompani.d by a decrease of Fe2O3^T, MgO and Cr2O3 wi.h repeti.i.n of the separati.n processes. Several ore dressi.g techni.ues were carri.d out to upgrade the i.meni.e concentrate.

关键词： Beach i.meni.e mi.eralogy chemi.try upgradi.g Northern Egypt

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Houda mohamed Mahmoud moustafa Abdalla Department of Mathemati.s

Houda Mohamed Mahmoud Moustafa Abdalla Department of Mathema...

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作者： Houda mohamed Mahmoud moustafa AbdcJla 华中师范大学

学位级别：硕士

i. thi. thesi., we consi.er the soluti.ns for the matri. equati.n AX— XA=A wi.h A a gi.en complex square matri. and X unknown. We prove that thi. equati.n has a soluti.n i. and only i. A i. ni.potent. Also, when A i.... 详细信息

关键词： ni.potent ei.envalue i.teger 学位论文 Jordan algebra 论文注释 matri.es 授权书 blocks

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Enhanci.g mi.rogri. renewable energy i.tegrati.n at SEKEM farm

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Global Energy i.terconnecti.n 2024年第6期7卷 761-772页

作者： mohamed.M.Reda mohamed i.Elsayed M.A.moustafa Hassan Hatem M.Seoudy Department of Electri.al Engi.eeri.g May UniversityCairo 11769Egypt Department of Electri.al Engi.eeri.g El-Azhar university 11651CairoEgypt Department of Electri.al power Cairo UniversityCairo 12613Egypt Department of Electri.al power and machi.e The Higher Institute of EngineeringElshorouk 11765Egypt

Thi. study explores the feasi.i.i.y of i.plementi.g a hybri. mi.rogri. system powered by renewable energy *** solar photovoltai.s,wi.d energy,and fuel cells to ensure a reli.ble and sustai.able electri.i.y supply for the SEKEM farm i. WAHAT,*** study uti.i.es MATLAB/Si.uli.k software to conduct si.ulati.ns based on sun i.radi.ti.n and wi.d speed *** control techni.ues,such as the proporti.nal-i.tegral(Pi.controller,Fuzzy Logi. Controller for Pi.tuni.g(fuzzy-Pi.,and neuro-fuzzy controllers,were evaluated to i.prove the performance of the *** results demonstrate that the Fuzzy-Pi.control strategy outperforms the alternati.e control systems,enhanci.g the overall dependabi.i.y and long-term vi.bi.i.y of energy *** hybri. system was i.tegrated wi.h a voltage source control(VSC)and fuzzy Pi.controller,whi.h effecti.ely addressed power fluctuati.ns and i.proved the stabi.i.y and reli.bi.i.y of the energy ***,i. provi.es i.si.htful i.formati.n on how to desi.n and i.plement a 100%renewable energy system,wi.h the fuzzy Pi.controller emergi.g as a vi.ble method of control that can guarantee the system’s resi.i.nce and outperform other approaches,such as the standalone Pi.controller and the neuro-fuzzy controller.

关键词： SEKEM farm Neuro-fuzzy Mi.rogri. hybri. system Fuzzy-Pi

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Usi.g nanotechnology to prevent fi.es mi.rati.n whi.e producti.n

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Petroleum 2021年第2期7卷 168-177页

作者： mohamed Mansour mohamed Eleraki.Ahmed Noah El-Abbas moustafa Faculty of Sci.nce Zagazig UniversityEgypt Egypti.n Petroleum Research i.sti.ute(EPRi. Egypt The Bri.i.h Uni.ersi.y Egypt

Formati.n damage due to fi.es mi.rati.n i. a major reason for well producti.i.y decli.e for oi. and gas *** fi.es are small enough to pass through pore throats causi.g pore pluggi.g and permeabi.i.y *** factors affect fi.es mi.rati.n such as flow rate,sali.i.y,pH value,reservoi. temperature and oi. polari.y,as well as changes i. chemi.al envi.onment i.duced by Enhanced Oi. Recovery(EOR)*** paper focuses on the effect of flow rates on fi.es detachment from the grai. surfaces,whi.h causi.g permeabi.i.y *** the flui. i.si.e the reservoi. moves towards the wellbore,the flui. veloci.y i.creases,when the flui. reaches the cri.i.al flow rate these fi.es can be pi.ked up i.to the *** fi.es captured by thi.ner pore throats causi.g pore pluggi.g and permeabi.i.y *** concentrati.ns of nanoparti.les were used to fi. these fi.es on thei. sources and prevent thei. mobi.i.ati.n at hi.h flow *** uni.ue techni.ue used i. thi. study i. changi.g the potenti.l surfaces between fi.es and grai. surfaces to prevent fi.es movement above the cri.i.al flow ***_(2)and MgO NPs used i. thi. study can be adsorbed on the pore surfaces and reduce the repulsi.n forces between fi.es and pore ***_(2) and MgO nanoparti.les at di.ferent concentrati.ns(0.25,0.50 and 0.75 g/L)were used on treati.g the Abu-Rawash sandstone reservoi. usi.g Formati.n Damage System Cell *** experi.ental studi.s showed that usi.g MgO NPs would prevent fi.es detachment from the pore surfaces and decrease the reducti.n of permeabi.i.y at hi.h flow rates more than Si._(2) *** opti.um concentrati.n of MgO NPs was at 0.5 g/L as the permeabi.i.y remedi.ti.n at thi. concentrati.n reaches to 64.83%.

关键词： Formati.n damage Fi.es mi.rati.n Nanoparti.les Zeta potenti.l Permeabi.i.y reducti.n Flui. flow rate

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Pri.acy-preserved learni.g from non-i.i.d data i. fog-assi.ted i.T:A federated learni.g approach

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Di.i.al Communi.ati.ns and Networks 2024年第2期10卷 404-415页

作者： mohamed Abdel-Basset Hossam Hawash Nour moustafa i.ran Razzak mohamed Abd Elfattah Faculty of Computers and i.formati.s Zagazig UniversityZagazigSharqiyah44519Egypt School of Engi.eeri.g and i.formati.n Technology University of New South Wales@ADFACanberraACT2600Australia Deaki. Uni.ersi.y Geelong Waurn Ponds CampusAustralia Computer Sci.nce Department Misr Higher Institute for Commerce and ComputersMansoura35511Egypt

Wi.h the prevalence of the i.ternet of Thi.gs(i.T)systems,smart ci.i.s compri.e complex networks,i.cludi.g sensors,actuators,appli.nces,and cyber *** complexi.y and heterogenei.y of smart ci.i.s have become vulnerable to sophi.ti.ated cyber-attacks,especi.lly pri.acy-related attacks such as i.ference and data poi.oni.g *** Learni.g(FL)has been regarded as a hopeful method to enable di.tri.uted learni.g wi.h pri.acypreserved i.telli.ence i. i.T *** though the si.ni.i.ance of developi.g pri.acy-preservi.g FL has drawn as a great research i.terest,the current research only concentrates on FL wi.h i.dependent i.enti.ally di.tri.uted(i.i.d)data and few studi.s have addressed the non-i.i.d *** i. known to be vulnerable to Generati.e Adversari.l Network(GAN)attacks,where an adversary can presume to act as a contri.utor parti.i.ati.g i. the trai.i.g process to acqui.e the pri.ate data of other *** paper proposes an i.novati.e Pri.acy Protecti.n-based Federated Deep Learni.g(PP-FDL)framework,whi.h accompli.hes data protecti.n agai.st pri.acy-related GAN attacks,along wi.h hi.h classi.i.ati.n rates from non-i.i.d ***-FDL i. desi.ned to enable fog nodes to cooperate to trai. the FDL model i. a way that ensures contri.utors have no access to the data of each other,where class probabi.i.i.s are protected uti.i.i.g a pri.ate i.enti.i.r generated for each *** PP-FDL framework i. evaluated for i.age classi.i.ati.n usi.g si.ple convoluti.nal networks whi.h are trai.ed usi.g MNi.T and Ci.AR-10 *** empi.i.al results have revealed that PF-DFL can achi.ve data protecti.n and the framework outperforms the other three state-of-the-art models wi.h 3%–8%as accuracy i.provements.

关键词： Pri.acy preservati.n Federated learni.g Deep learni.g Fog computi.g Smart ci.i.s

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New Polymer Syntheses Part 60: A Faci.e Syntheti. Route to Polyami.es Based on Thi.no[2,3-b]thi.phene and Thei. Corrosi.n i.hi.i.i.n Behavi.r

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Chi.ese Journal of Polymer Sci.nce 2018年第7期36卷 835-847页

作者： Kamal i.Aly Amr H.moustafa Essam K.Ahmed Hany M.Abd El-lateef mohamed Gamal mohamed Sahar M.mohamed Polymer Research Lab Chemistry Department Faculty of Science Assiut University Chemi.try Department Faculty of Science Sohag University Chemi.try Department Faculty of Science Minia University Chemi.try Department College of Science King Faisal university

Polyami.es contai.i.g thi.no[2,3-b]thi.phene moi.ty were prepared vi. a si.ple polycondensati.n reacti.n of the di.mi.othi.no[2,3-b]thi.phene monomer la wi.h di.ferent ki.ds of di.ci. chlori.es （i.cludi.g oxalyl, adi.oyl, sebacoyl, i.ophthaloyl, terephthaloyl, 4,4＇-azodi.enzoyl, 3,3＇-azodi.enzoyl, p-phenylene di.cryloyl） i. the presence of Li.1 and NMP as a solvent through lowtemperature soluti.n polycondensati.n. The chemi.al structures of model compound and synthesi.ed polyami.es were confi.med by FTi., nuclear magneti. resonance spectroscopy （i.cludi.g 1 H-NMR and 13 C-NMR） and elemental analysi.. i. addi.i.n, the thermal stabi.i.y, crystalli.i.y structure and surface morphology of synthesi.ed polyami.es were characteri.ed vi. thermogravametri. analysi. （TGA）, wi.e-angle X-ray di.fracti.n analysi. （WAXD） and scanni.g electron mi.roscopy （SEM）. Also, the corrosi.n i.hi.i.i.n behavi.r of selected examples ofpolyami.es was i.vesti.ated; the i.hi.i.i.e effect of the i.vesti.ated polymers for carbon steel i. 1.0 mol＇L-1 HCi.was studi.d usi.g potenti.dynami. polari.ati.n （PDP） and electrochemi.al i.pedance spectroscopy （Ei.） methods. PDP results di.played that the polyami.es contai.i.g thi.no[2,3-b]thi.phene moi.ty can be as mi.ed-type i.hi.i.ors. The i.hi.i.i.n effi.i.ncy （P, %） was found to be i. the range from 67.13% to 96.01%. There i. an i.crease i. P by the synthesi.ed polymers i. compari.on to the starti.g monomer. The adsorpti.n of these polymers was found to obey Langmui. adsorpti.n i.otherm.

关键词： Thi.no[2 3-b]thi.phene Polymer synthesi. Thermal properti.s i.dustri.l appli.ati.ns Corrosi.n i.hi.i.i.n

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i.pacts of cli.ate change on water quanti.y, water sali.i.y, food securi.y, and soci.economy i. Egypt

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Water Sci.nce and Engi.eeri.g 2021年第1期14卷 17-27页

作者： Mohi. El Di. mohamed Omar Ahmed moustafa Ahmed Moussa Rei.hard Hi.kelmann Nati.nal Water Research Center Fum Ismailiya CanalShoubra El-Kheima 13411Egypt i.ternati.nal Center for Agri.ultural Research i. the Dry Areas Cairo 2416Egypt Ni.e Research i.sti.ute(NRi. National Water Research CenterEl-Qanater 13621Egypt Department of Water Engi.eeri.g Technische Universit€at Berlin(TU Berlin)Campus El GounaEl Gouna 84513Egypt

Cli.ate change mi.ht have di.ect i.pacts on water quanti.y i. Egypt and lead to i.di.ect effects on Medi.erranean saltwater i.trusi.n to groundwater,whi.h exposes agri.ulture to *** study i.vesti.ated i.pacts of cli.ate change on agri.ulture,wi.h parti.ular regard to food securi.y and soci.economy,and quanti.i.d the effecti.eness of croppi.g pattern adaptati.n measures by i.tegrati.g three mathemati.al *** BlueM model was used for hydrologi.al si.ulati.ns of Nasser Lake under floodi.g scenari.s to predi.t the water supply from the Hi.h Aswan *** water and sali.i.y balance(WB-SAL)model was adopted to esti.ate the water sali.i.y i. the Ni.e *** si.ulated results from the BlueM and WB-SAL models were i.tegrated wi.h the agri.ultural si.ulati.n model for Egypt(ASME)to project croppi.g patterns,food securi.y,and soci.economy throughout the *** results showed that future cli.ate change wi.l di.ectly affect the total crop area;crop areas for 13 crop types;the self-suffi.i.ncy of wheat,ri.e,cereal,and mai.e suppli.s;and soci.economi. *** proposed croppi.g pattern adaptati.n measures focus on fi.i.g the crop areas of ri.e and orchards and provi.i.g half of the populati.n wi.h lenti.s,mai.e,oni.n,vegetables,mi.k,and *** adaptati.n measures have the potenti.l to promote food securi.y wi.hout causi.g deteri.rati.n of the soci.economi. ***,water avai.abi.i.y has much more si.ni.i.ant effects on food securi.y and soci.economy than croppi.g pattern adaptati.n measures ***,the country should rati.nali.e water use effi.i.ncy and i.crease water supply.©2021 Hohai.*** and hosti.g by Elsevi.r *** i. an open access arti.le under the CC BY-NC-ND li.ense(http://***/li.enses/by-nc-nd/4.0/).

关键词： Cli.ate change Water quanti.y Sali.i.y Croppi.g pattern adaptati.n measures Food securi.y Soci.economy

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Anti.i.robi.l acti.i.i.s of three seaweeds extract agai.st some human vi.al and bacteri.l pathogens

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Bi.CELL 2022年第1期46卷 247-261页

作者： JELAN MOFEED mohamed DEYAB ABDELNASER mohamed MAHMOUD moustafa SALLY NEGM EMAD EL-Bi.AWY Faculty of Sci.nce King Salman International UniversitySinaiEgypt Faculty of Fi.h Resources Suez UniversitySuezEgypt Faculty of Sci.nce Damietta UniversityDamiettaEgypt Department of Bi.logy College of ScienceKing Khalid UniversityAbha9004Saudi Arabia Department of Botany and Mi.robi.logy Faculty of ScienceSouth Valley UniversityQenaEgypt Li.e Sci.nces Department Faculty of Science and ArtKing Khalid UniversityMahayel Aseer 61421Saudi Arabia Uni. of Food Bacteri.logy Central Laboratory of Food HygieneMinistry of HealthSharkia44516Egypt

Mi.robi.l i.fecti.ns cause compli.ated health i.fluences along wi.h bad economi. *** the present i.vesti.ati.n,three domi.ant seaweeds namely,Amphi.oa anceps,Coralli.a offi.i.ali. and Sargassum fi.i.endula were collected from di.ferent Egypti.n si.es at the Red Sea and Medi.erranean Sea duri.g autumn *** extracts of the three algae were screened for thei. anti.acteri.l acti.i.y agai.st three pathogeni. bacteri. Salmonella typhi.muri.m,Staphylococcus aureus and Escheri.hi. coli.i. addi.i.n to i. vi.ro anti.i.al acti.i.y agai.st Rotavi.us(RV),and Coxsacki. vi.us B3(CVB3)that cause severe di.eases i. *** extract of ***,*** and *** i.hi.i. *** cells by 57.1%,85.7%,and 91.4%,*** hi.hest level of concentrati.n of the *** extract(100μg/mL)i.hi.i.s 100%of Staphylococcus aureus cells followed by *** and *** extract whi.h i.hi.i. 82.5%and 75%of ***,the hi.hest concentrati.n of *** extract i.hi.i.s *** by 80%.The extract of *** exhi.i.ed a hi.h anti.i.al effect agai.st RV i.fecti.n wi.h Ti.22 and vi.us ti.ers lessened by 2.75 log TCi._(50) followed by extracti.ns of *** wi.h Ti.18.3 and vi.us ti.ers reduced by 2.5 log TCi._(50).Agai.st CVB3 i.fecti.n,the extract of *** causes the hi.hest anti.i.al acti.i.y wi.h Ti.15 and reduce the vi.al ti.ers by 2.5 log TCi._(50),followed by extracti.ns of *** wi.h Ti.8.8 and i.hi.i.i.n of vi.us ti.ers by 1.75 log TCi._(50).Extract of *** di.played the lowest anti.i.al effects agai.st RV and CVB3 i.fecti.n wi.h Ti.2.4 and 1.4,*** obtai.ed results clari.i.d that the extract of three mari.e seaweeds mai.tai.s a potent anti.i.robi.l acti.i.y,maki.g them a future promi.i.g source of new anti.i.robi.l drugs.

关键词： Seaweeds Anti.i.robi.l Anti.acteri.l Cytotoxi.i.y Anti.i.al

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Development and Modeli.g of Remotely Operated Scaled Multi.wheeled Combat Vehi.le Usi.g System i.enti.i.ati.n

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i.ternati.nal Journal of Automati.n and computi.g 2019年第3期16卷 261-273页

作者： A.N.Ouda Amr mohamed moustafa Ei.Gi.dy Haoxi.ng Lang Ji.g Ren Faculty of Engi.eeri.g and Appli.d Sci.nce University of Ontario Institute of Technology (UOIT)

Thi. paper descri.es the development and modeli.g of a remotely operated scaled multi.wheeled combat vehi.le(ROMWCV)usi.g system i.enti.i.ati.n methodology for headi.g angle *** vehi.le was developed at the vehi.le dynami.s and crash research(VDCR)Lab at the Uni.ersi.y of Ontari. i.sti.ute of Technology(UOi.)to analyze the characteri.ti.s of the full-si.e *** such vehi.les,the development of controllers i. consi.ered the most cruci.l *** thi. paper,the ROMWCV i. developed *** experi.ental test was carri.d out to record and analyze the vehi.le i.put/output si.nals i. open loop system,whi.h i. consi.ered a multi.i.put-si.gle-output(Mi.O)***,a fuzzy logi. controller(FLC)was developed for headi.g angle *** experi.ents showed that i. was feasi.le to represent the dynami. characteri.ti.s of the vehi.le usi.g the system i.enti.i.ati.n *** esti.ati.n and vali.ati.n results demonstrated that the obtai.ed i.enti.i.d model was able to explai. 88.44%of the output *** addi.i.n,the developed FLC showed a good headi.g angle tracki.g.

关键词： Autonomous multi.wheeled vehi.le system i.enti.i.ati.n all wheel steeri.g fuzzy logi.(FL) parametri. i.enti.i.ati.n

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i.otherm and ki.eti. studi.s on the adsorpti.n of humi. aci. molecular si.e fracti.ns onto clay mi.erals

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Acta Geochi.i.a 2019年第6期38卷 863-871页

作者： mohamed E.A.El-Sayed moustafa M.R.Khalaf James A.Ri.e Department of Chemi.try and Bi.chemi.try South Dakota State UniversityBrookingsSD 57007USA Soi.s Waterand Environmental Research InstituteAgriculture Research CenterEl-GizaEgypt Chemi.try Department Faculty of ScienceMinia UniversityEl-Minia 61519Egypt

Humi. aci.(HA)can adsorb onto mi.eral surfaces,modi.yi.g the physi.ochemi.al properti.s of the ***,understandi.g the sorpti.n behavi.r of HA onto mi.eral surfaces i. of parti.ular i.terest,si.ce the fate and transport of many organi. and i.organi. contami.ants are hi.hly correlated to HA adsorbed onto clay *** to the extreme heterogenei.y of HA,the extracted i.SS Leonardi.e humi. aci.(LHA)used i. thi. work was fracti.nated usi.g an ultrafi.trati.n techni.ue(UF)i.to di.ferent molecular si.e fracti.ns(Fr1,>0.2μm;Fr2,0.2 pm-300,000 daltons;Fr3,300,000-50,000 daltons;Fr4,50,000-10,000 daltons;Fr5,10,000-1000 daltons).Equi.i.ri.m and the ki.eti.s of LHA and fracti.n adsorpti.n onto kaoli.i.e and montmori.loni.e were *** results demonstrated that the maxi.um adsorpti.n capaci.y of LHA,Frl,Fr2,Fr3,Fr4,and Fr5 was 5.99,13.69,10.29,7.02,5.9&and 5.09 on kaoli.i.e whi.e i. was 8.29,22.62,13.17,8.91,8.62,and 5.69 on montmori.loni.e,*** adsorpti.n equi.i.ri.m data showed that the adsorpti.n behavi.r of LHA and i.s fracti.ns could be descri.ed more practi.ally by the Langmui. model than the Freundli.h *** rate of humi. aci. fracti.n adsorpti.n onto clays i.creased wi.h decreasi.g molecular si.e fracti.n and i.creasi.g carboxyli. group ***-fi.st-and second-order models were used to assess the ki.eti. data and the rate *** results explai.ed that LHA and i.s fracti.ns adsorpti.n on clay mi.erals conformed more to pseudosecondo rder.

关键词： Kaoli.i.e Montmori.loni.e Leonardi.e humi. aci. Humi. aci. fracti.ns Ki.eti.s Equi.i.ri.m

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