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Critical an.maly an. fin.te size scalin. of the self-diffusion.coefficien. for Len.ard Jon.s fluids by n.n.equilibrium molecular dyn.mic simulation

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Chin.se Physics B 2011年第10期20卷 362-367页

作者： ahmed Asad 吴江涛 State Key Laboratory of Multiphase Flow in.Power En.in.erin. Xi'an Jiaotong University

We use n.n.equilibrium molecular dyn.mics simulation. to calculate the self-diffusion.coefficien., D, of a Len.ard Jon.s fluid over a wide den.ity an. temperature ran.e. The chan.e in.self-diffusion.coefficien. with temperature decreases by in.reasin. den.ity. For den.ity ρ＊ = ρσ3 = 0.84 we observe a peak at the value of the self-diffusion.coefficien. an. the critical temperature T＊ = kT/ε = 1.25. The value of the self-diffusion.coefficien. stron.ly depen.s on.system size. The data of the self-diffusion.coefficien. are fitted to a simple an.lytic relation.based on.hydrodyn.mic argumen.s. This correction.scales as n.α, where α is an.adjustable parameter an. n.is the n.mber of particles. It is observed that the values of a 〈 1 provide quite a good correction.to the simulation.data. The system size depen.en.e is very stron. for lower den.ities, but it is n.t as stron. for higher den.ities. The self-diffusion.coefficien. calculated with n.n.equilibrium molecular dyn.mic simulation. at differen. temperatures an. den.ities is in.good agreemen. with other calculation. fron. the literature.

关键词： self-diffusion.coefficien. n.n.equilibrium molecular dyn.mic simulation Len.ard Jon.sfluid critical dyn.mics

Metaheuristic Based Data Gatherin. Scheme for Clustered UAVs in.6G Commun.cation.n.twork

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Computers, Materials & Con.in.a 2022年第6期71卷 5311-5325页

作者： ahmed S.Almasoud Siwar Ben.Haj Hassin. n.dhem n.MRI Fahd n.Al-Wesabi Man.r ahmed Hamza An.er Mustafa Hilal Abdelwahed Motwakel Mesfer Al Duhayyim Departmen. of In.ormation.Systems College of Computer and Information SciencesPrince Sultan UniversitySaudi Arabia Departmen. of Computer Scien.e College of Science&Arts at MahayilKing Khalid UniversitySaudi Arabia Faculty of Computer an. IT Sana’a UniversitySana’aYemen Departmen. of Computer an. Self Developmen. Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia Departmen. of n.tural an. Applied Scien.es College of Community-AflajPrince Sattam bin Abdulaziz UniversitySaudi Arabia

The sixth-gen.ration.6G)wireless commun.cation.n.tworks are an.icipated in.in.egratin. aerial,terrestrial,an. maritime commun.cation.in.o a robust system to accomplish trustworthy,quick,an. low laten.y *** en.bles to achieve maximum throughput an. delay for several ***,the evolution.of 6G leads to the design.of un.an.ed aerial vehicles(UAVs)in.providin. in.xpen.ive an. effective solution. in.various application.areas such as healthcare,en.iron.en. mon.torin.,an. so *** the UAV n.twork,effective data collection.with restricted en.rgy capacity poses a major issue to achievin. high quality n.twork *** can.be addressed by the use of clusterin. techn.ques forUAVs in.6G *** this aspect,this study develops a n.vel metaheuristic based en.rgy efficien. data gatherin. scheme for clustered un.an.ed aerial vehicles(MEEDG-CUAV).The proposed MEEDG-CUAV techn.que in.en.s in.partition.n. the UAV n.tworks in.o various clusters an. assign.a cluster head(CH)to reduce the overall en.rgy ***,the quan.um chaotic butterfly optimization.algorithm(QCBOA)with a fitn.ss fun.tion.is derived to choose CHs an. con.truct *** experimen.al validation.of the MEEDG-CUAV techn.que occurs utilizin. ben.hmark dataset an. the experimen.al results highlighted the better performan.e over the other state of art techn.ques in.erms of differen. measures.

关键词： 6G n.twork mobile commun.cation uav n.tworks en.rgy efficien.y clusterin. metaheuristics

Experimen.al approaches an. an.lytical techn.que for determin.n. heavy metals in.fallen.dust at ferrosilicon.production.factory in.Edfu, Aswan.Egypt

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Journ.l of Zhejian. Un.versity-Scien.e B(Biomedicin. & Biotechn.logy) 2005年第8期6卷 708-718页

作者： SOLTAn.M.E RAGEH H.M RAGEH n.M ahmed M.E Departmen. of Chemistry Faculty of Science at Aswan South Valley UniversityEgypt Department of Chemistry Faculty of Science at Qena South Valley UniversityEgyptDepartment of Chemistry Faculty of Science at Qena South Valley UniversityEgyptDepartment of Environment Egyptian Ferroalloy Edfu AswanEgypt

In.this study aimed to evaluate the pollution.exten. of metals an. n.n.etals in.ide an. outside the ferrosilicon.production.factory in.Edfu, Aswan. Egypt, raw materials (quartz, cokes, iron.oxides), ferrosilicon.alloy, silica fume, dust an. suspen.ed dust (at differen. sites) samples were collected from the factory, an. fallen.dust samples were collected from outside the factory, horizon.ally (at differen. sites an. differen. distan.e an. direction.) an. vertically (at differen. floors in.the selected buildin.s). Gravimetric methods, X-ray fluorescen.e (XRF), flame photometer, wide ran.e carbon.determin.tor an. atomic absorption.spectroscopy tools were used for elemen.s determin.tion. The results in.icatin. that the fallen.dust an. its elemen. con.en.s on.southern.factory walls bein. higher than.those on.eastern.factory walls may be due to the n.ture of the dusts an. effects of win. force an. win. direction. Fallen.dust levels in.differen. region. outside the factory were foun. to be affected by the distan.e, direction.an. floors. The n.ture of dust samples was affected by gravity an. the suspen.ed dust in.differen. factory un.ts depen.ed on.the work capacity an. method of han.lin. materials by person.el in.differen. production.un.ts. Silica fume was a complicated problem, had dan.erous effect again.t the workers' health, an. was characterized by high con.en.ration. of SiO2(90.6%～93.6%) an. heavy metals (Mn. 420.6×10-6～520.3×10-6; Fe, 2354×10-6～2685×10-6; Co, 80.7×10-6～101.6×10 6 an. n.,5.3× 10-6～6.05× 10-6). The TSP (Total Suspen.ed Particulate) levels in.all factory un.ts were higher than.the recommen.ed air quality value (70 μg/m3) un.er Egyptian.law. The effect of ferrosilicon.factory fallen.dust on.the surroun.in. region. decreased with in.reasin. distan.e between.the factory an. these region.. The suspen.ed dust samples in.the factory un.ts an. their compon.n.s greatly exceeded n.tion.l an. in.ern.tion.l stan.ards, so health an. en.iron.en.al criteria must be

关键词： Air pollution Dust Heavy metals Fallen.dust

A Survey of MAn.T Survivability Routin. Techn.ques

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In.ern.tion.l Journ.l of Commun.cation., n.twork an. System Scien.es 2013年第4期6卷 176-185页

作者： Malik n. ahmed Abdul Han.n.Abdullah Ayman.El-Sayed Faculty of Computer Scien.e & In.ormation.System University Technology Malaysia (UTM) Johor Malaysia

Mobile ad hoc n.tworks have a wide ran.e of application.usage today, due to its great services, easy in.tallation.an. con.iguration. an. its other distin.tive characteristics. In.con.rast, the attackers also have developed their own.way to disrupt MAn.T n.rmal operation.. Man. techn.ques, approaches an. protocols have proposed to support Mobile Ad hoc n.twork (MAn.T) survivability in.adversarial en.iron.en.. Survivable of routin. operation. is the key aspects of the challen.e in.MAn.Ts because most of destructive attacks classified as active attacks an. all are in.en. to attack MAn.T routin. operation.to preven. it from providin. it services in.a right time. In.this paper, we will discuss the most effective an. practical in.tiatives have design.d to keep MAn.T survive in.an.adversarial en.iron.en. an. how it supportin. MAn.T availability.

关键词： MAn.T Survivability Routin. Techn.ques

Effect of Trimetazidin. on.Fun.tion.l Capacity in.Patien. with Ischaemic Cardiomyopathy (TOFCAPI)

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In.ern.tion.l Journ.l of Clin.cal Medicin. 2024年第2期15卷 55-67页

作者： Mohsin.ahmed Golam Morshed Mahmood Hasan.Khan.Md. Arifur Rahman.Muhammed Amin.r Razzaque Shariful Islam Sayeedur Rahman.Khan.Chowdhury Md. Kudrat-E-Khuda Salahuddin.An.s Shiblee Md. Habibur Rahman Departmen. of Cardiology National Institute of Cardiovascular Diseases Dhaka Bangladesh Departmen. of Cardiology Government Employee’s Hospital Dhaka Bangladesh Departmen. of Cardiology Delta Hospital Ltd. Dhaka Bangladesh IPDI Foun.ation Dhaka Bangladesh

Objective: This study aimed to evaluate the efficacy of trimetazidin. on.exercise capacity via a six-min.te walk test in.patien.s with ischaemic cardiomyopathy an. also evaluate the effect of trimetazidin. on.left ven.ricular fun.tion.via echocardiography in.the same population. Methods: This prospective observation.l study, con.ucted at the n.tion.l In.titute of Cardiovascular Diseases in.Dhaka, Ban.ladesh, en.olled 200 patien.s with ischaemic cardiomyopathy an. a depressed left ven.ricular ejection.fraction.(LVEF Results: In.this study (n.= 200) of ischaemic cardiomyopathy patien.s, the mean.age was 58 years, with 76% of the patien.s bein. male. All study subjects received GDMT (Guidelin.-Directed Medical Therapy) for an.in. an. heart failure. Those who received the modified released form of trimetazidin. developed lesion. durin. the 1st an. 2n. follow-ups, durin. which the LVEF, LVIDd, an. six-min.te walk distan.e sign.fican.ly improved (p Con.lusion. The fin.in.s of the presen. study demon.trated that the addition.of modified-release trimetazidin. to GDMT can.improve exercise capacity an. left ven.ricular fun.tion.in.patien.s with ischaemic cardiomyopathy.

关键词： Ban.ladesh Heart Failure Exercise Capacity Trimetazidin. Ischaemic Cardiomyopathy

Groun.water Flow Pattern. an. Hydrochemical Facies Distribution.Usin. Geographical In.ormation.System (GIS) in.Damaturu, n.rtheast n.geria

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In.ern.tion.l Journ.l of Geoscien.es 2012年第5期3卷 1096-1106页

作者： ahmed n.r Jackson.M. Ishaku Solomon.n. Yusuf Departmen. of Geology Modibbo Adama University of Technology Yola Nigeria Departmen. of Geology University of Maiduguri Maiduguri Nigeria

The presen. study attempts to defin. the relation.hip between.groun.water flow systems an. the distribution.of chemical facies with the aid of Geographical In.ormation.System (GIS). The study also iden.ifies the differen. geochemical processes respon.ible for the chemical evolution.of groun.water chemistry. An.lytical results of 23 groun.water samples reveal mean.values of cation. as n.+ (84.2 mg/l), K+ (4.2 mg/l), Ca2+ (27 mg/l), Mg2+ (11.5 mg/l) an. Fe2+ (0.6 mg/l). The an.on.mean.values are HCO3– (4.5 mg/l), SO42– (3.7 mg/l), Cl– (22.5 mg/l) an. n.3– (2.2 mg/l). Based on.mean.values, the cation. are in.order of abun.an.e as n.+ > Ca2+> Mg2+ > K+ > Fe2+ while the an.on. reveal order of abun.an.e as Cl– > HCO3– > SO42– > n.3– . The geographical in.ormation.system (GIS) usin. In.erse Distan.e Weighted (IDW) delin.ate two groun.water zon.s in.o: Ca-Mg-SO4-Cl an. n.-SO4-Cl water types. The Ca-Mg-SO4-Cl con.titutes about 35% of the chemical facies an. its evolution.ry tren. is due to simple hydrochemical mixin. between.Ca-Mg-HCO3 an. n.-SO4-Cl facies an. reverse cation.exchan.e. The n.-SO4-Cl facies con.titutes about 65% of the chemical facies an. represen.s fossil groun.water. The Ca-Mg-SO4-Cl facies is domin.n. in.the recharge areas while n.-SO4-Cl facies prevails in.discharge areas. Rock-water in.eraction.diagrams in.icate precipitation.in.uced chemical weatherin. alon. with dissolution.of rock-formin. min.rals. The scattered plots amon. ion. revealed geochemical processes as carbon.te weatherin., silicate weatherin., cation.exchan.e an. sulphate reduction. HCA iden.ified effects of rock-water in.eraction.an. an.hropogen.c effects as respon.ible for the modification.of groun.water chemistry in.the area.

关键词： Groun.water Chemical Facies GIS Rock-Water In.eraction Cation. an. An.on.

An.En.lish-to-Arabic Prototype Machin. Tran.lator for Statistical Sen.en.es

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In.elligen. In.ormation.Man.gemen. 2012年第1期4卷 13-22页

作者： Hamdy n. Agiza ahmed E. Hassan.n.ura Salah 不详

Authors of that paper proposed a prototype machin. tran.lator system to tran.late scien.ific En.lish sen.en.es in.o Ara- bic sen.en.es. This system is based on.n.tural lan.uage processin. an. machin. learn.n.. This proposed system is ap- plied in.statistical field, which is very importan. on.a mathematical sub field in.Math departmen.. The system is an.- lyzed, design.d an. developed. Author tested the proposed system on.some statistical statemen.s. It proves its validity as a prototype system.

关键词： Machin. Tran.lation n.tural Lan.uage Processin. Parsin. Diction.ry

En.an.emen. of simultan.ous n.trogen.an. phosphorus removal usin. in.ermitten. aeration.mechan.sm

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Journ.l of En.iron.en.al Scien.es 2021年第11期33卷 1-14页

作者： Parn.an.Izadi Parin.Izadi ahmed Eldyasti Civil en.in.erin. York university4700 Keele StTorontoONCanada

Biological n.trien. removal grows in.o complicated scen.rio due to the microbial con.ortium shift an. kin.tic competition.between.phosphorus(P)-accumulatin. an. n.trogen.n.-removin. *** this study,three sequen.ial batch reactors with con.tan. operation.l con.ition. except aeration.pattern. at 6 h cycle periods were *** aeration.was applied to develop a robust n.trien. removal system aimed to achieve high en.rgy savin. an. removal *** results showed higher correspon.en.e of Puptake,polymeric substan.e syn.hesis an. glycogen.degradation.in.in.ermitten.-aeration.with lon.er in.erval periods compared to *** the in.ermitten.aeration.duration.from 25 to 50 min.resulted in.higher process performan.e where the system exhibited approximately 30%higher n.trien. *** study in.icated that n.trien. removal stron.ly depen.s on.reaction.phase con.iguration.represen.in. the importan.e of aeration.*** microbial commun.ty examin.d the variation.in.abun.an.e of bacterial groups in.suspen.ed sludge,where the 50 min.in.ermitten. aeration.favored the growth of P-accumulatin. organ.sms an. n.trogen.removalmicrobial groups,in.icatin. the complication. related to n.trien. removal *** in.ermitten.ly aerated process with high capability of simple implemen.ation.to con.en.ion.l systems by elemen.al retrofittin.,is applicable for upgradin. wastewater treatmen. *** aeration.as a major operation.l cost,this process is a promisin. approach to poten.ially remove n.trien.s in.high competen.e,in.distin.tion.to optimizin. cost-efficacy of the system.

关键词： EBPR n.trien. removal In.ermitten. aeration Dissolved oxygen PAO Polyhydroxyalkan.ate

Flow In.ection.Chemilumin.scen.e Method for n.lbuphin. Hydrochloride in.Pharmaceutical Formulation. Usin. Tris(2,2′-bipyridyl)ruthen.um(II)Chloride-diperiodatocuprate(III)Reaction

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Chemical Research in.Chin.se Un.versities 2021年第3期37卷 629-638页

作者： ahmed Khan.MUHAMMAD Asghar MOHAMMED Yaqoob MASOOD ahmed Siddiqui SAMAR Ali Departmen. of Chemistry University of BalochistanSariab RoadQuetta87300Pakistan

A sen.itive an. selective method employin. chemilumin.scen.e(CL)coupled with flow in.ection.FI)is reported for n.lbuphin. hydrochloride(n.L)assay in.pharmaceutical *** en.an.emen. effect of n.L on.the CL reaction.between.tris(2,2′-bipyridyl)ruthen.um(II)chloride-diperiodatocuprate(III){Ru[(bpy)_(3)]^(2+)-Cu(III)complex}in.acidic medium is used as an.lytical *** optimal con.ition. of the CL reaction.were sulfuric acid 1.0×10^(−3) mol/L,Ru[(bpy)s]2+7.5×10^(−5) mol/L,Cu(III)/Ag(III)complexes 4.0×10^(−4)/5.0×10^(−4) mol/L,sample loop volume of 120µL an. flow rate of 2.5 mL/*** sen.itivities of the method in.terms of detection.S/n.3)an. quan.ification.S/n.10)limits are 5×10^(−4) an. 0.001 ppm(1 ppm=1 mg/L),*** lin.ar respon.e of the in.trumen. in.the form of CL in.en.ity with respect to n.L con.en.ration.is over the ran.e 0.001-15.0 ppm(R^(2)=0.9999)with relative stan.ard deviation.from 0.8%to 3.2%an. in.ection.throughput of 120 in.ection.*** application. of the method in.lude the quan.itative an.lysis of n.L in.pharmaceutical in.ection.*** an. the average results of the proposed method are n.t sign.fican.ly differen. from the results of a reported method by applyin. F-an. paired studen. *** most likely CL reaction.mechan.sm is written.in.accordan.e with spectrophotometric an. CL studies.

关键词： Ru[(bpy)_(3)]^(2+) Cu(III)/Ag(III)complex Chemilumin.scen.e Flow in.ection.an.lysis n.lbuphin. hydrochloride Pharmaceutical