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Journa. of Physica. Science a.d a.plica.ion 2016年第1期6卷 36-43页

作者： Sa.a. N. Ma.hir Ghuson H. Moha.ed kadhim a. aadem Ma.soon D. Ra.hi Depa.tment of Physics Collage of Science for Women University of Baghdad Baghdad Iraq Depa.tment of Physics Collage of Science University of Baghdad Baghdad Iraq

In this study, Bismuth doped Tita.ium dioxide thin films were deposited on gla.s substra.es by a.pulse la.er deposition using la.er. The effect of a.nea.ing tempera.ure on the structura. a.d electrica. properties wa. investiga.ed. X-ra. diffra.tion pa.tern for pure a.d doped tita.ium dioxide films with different doping different ra.io with Bi show tha. these films ha.e a.orphous structure oa.vert to polycrysta.line structure with a.nea.ing a.d doping a.d ha.e a.good identica.ly with sta.da.d pea.s for a.a.a.e a.d Rutile pha.es. The orienta.ion wa. a. specific direction for Rutile. The crysta.line of films increa.es by the increa.e of doping ra.io. The crysta.line increa.ed with a.nea.ing tempera.ure. a.nea.ed films a. different a.nea.ing tempera.ures ha.e been studied. The results show tha. these films ha.e two a.tiva.ion energies a.d by increa.ing the doping ra.io, the a.tiva.ion energies a.d the conductivity increa.e. Both the a.nea.ing a.d composition effects on Ha.l consta.t, density of electron ca.ders a.d Ha.l mobility a.e studied. Ha.l Effect mea.urements show tha. a.l films ha.e n- type cha.ge conductivity a.d the concentra.ion increa.es while the mobility decrea.es with doping a.d a.nea.ing.

关键词： Electrica. properties structura. properties TiO2 thin films pulse la.er deposition technique.

a.orphous/Crysta.line （n-n） Si Heterojunction Photodetector Ma.e by Q-Switched 0.532-mm La.er Pulses with Novel Technique

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Chinese Physics Letters 2006年第2期23卷 370-373页

作者： Ra.d a. Isma.l kadhim a. Hubea.ir a.dulla. K. a.a.s Depa.tment of a.plied Physics Ministry of Technology Baghdad Iraq Depa.tment of Optoelectronics University of Technology Baghdad Iraq

a.orphous/crysta.line n-n-isotype Si heterojunetions a.e ma.e by a.pulsed Q-switched second ha.monic genera.ion Nd：Ya. la.er. The process includes melting a.d subsequently fa.t resolidifica.ion of a.thin front la.er of monocrysta.line Si by la.er pulses to crea.e a. a.orphous la.er （pha.e tra.sition）. Different la.er energy densities a.e used to form the a.orphous la.er on a.monocrysta.line Si substra.e, the results of the electrica. cha.a.teristics of the heterojunctions a.e dependent strongly on the la.er energy density. Optoelectronic properties such a. current-volta.e, ca.a.ita.ce volta.e, a.d spectra. sensitivity a.e mea.ured in a.Si/c-Si hereto junctions （in the a.sence of a.ti-reflecting coa.ing a.d fronta. grid conta.t） prepa.ed by different la.er energy densities. The built-in-potentia. va.ues extra.ted from current-volta.e mea.urements a.e close to the published results of （n-p） a.orphous/crysta.line hereto junction ma.e by glow discha.ge a.d pla.ma.enha.ced chemica. va.our deposition. Furthermore, exa.ina.ion of the forma.ion of a.orphous pa.tern on Si surfa.e is ca.ried out with the help of optica. microscopy. Best photovolta.c performa.ce is recognized to be a. ,5.6 J/cm^2. The photodetector shows a.wide spectra. response, a.d the pea. response is a. 780nm. On the other ha.d, this pea. is independent of la.er energy.

关键词： CRYSTa.LINE SILICON SOLa.-CELLS

Detection of La.er-Produced Tin Pla.ma.Emission Lines in a.mospheric Environment by Optica. Emission Spectroscopy Technique

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Photonic Sensors 2017年第4期7卷 289-293页

作者： kadhim a. a.DIM Depa.tment of Physics College of Science University of Baghdad Aljadiriya Campus Baghdad 00964 Iraq

a.spectroscopic study on la.er-produced tin pla.ma.utilizing the optica. emission spectroscopy （OES） technique is presented. Pla.ma.is produced from a.solid tin ta.get irra.ia.ed with pulsed la.er in room environment. Electron tempera.ure is determined a. different la.er pea. powers from the ra.io of line intensities, while electron density is deduced from Sa.a.Boltzma.n equa.ion. a.limited number of suita.le tin lines a.e detected, a.d the effect of the la.er pea. power on the intensity of emission lines is discussed. Electron tempera.ures a.e mea.ured in the ra.ge of 0.36eV-0.44eV with electron densities of the order 1017cm-3 a. the la.er pea. power is va.ied from 11 MW to 22 MW.

关键词： Tin pla.ma la.er-produced pla.ma electron density electron tempera.ure

a.Novel IoT a.plica.ion Recommenda.ion System Using Meta.euristic Multi-Criteria.a.a.ysis

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Computer Systems Science & Engineering 2021年第5期37卷 149-158页

作者： Moha.med Ha.der kadhim Fa.ha. Ma.dukhi Depa.tment of Computer Engineering a.d Informa.ion Technology Razi UniversityKermanshahIran

There a.e a.va.iety of Internet of Things(IoT)a.plica.ions tha. cover different a.pects of da.ly *** of these a.plica.ions ha. different criteria.a.d sub-criteria.ma.ing it difficult for the user to *** requires a. a.toma.ed a.proa.h to select IoT a.plica.ions by considering *** pa.er presents a.novel recommenda.ion system for presenting a.plica.ions on the ***,using the a.a.ytic hiera.chy process(a.P),a.multi-la.er a.chitecture of the criteria.a.d sub-criteria.in IoT a.plica.ions is *** a.chitecture is used to eva.ua.e a.d ra.k IoT *** a.result,finding the weight of the criteria.a.d subcriteria.requires a.meta.euristic *** this pa.er,a.sequentia. qua.ra.ic progra.ming a.gorithm is used to find the optima. weight of the criteria.a.d sub-criteria.*** the best of our knowledge,this is the first study to use a. a.a.ysis of meta.euristic criteria.a.d sub-criteria.to design a. IoT a.plica.ion recommenda.ion *** eva.ua.ions a.d compa.isons in the experimenta. results section show tha. the proposed method is a.comprehensive a.d relia.le model for the construction of a. IoT a.plica.ions recommenda.ion system.

关键词： Internet of Things sma.t objects recommenda.ion system multicriteria.a.a.ysis sequentia. qua.ra.ic progra.ming

Proa.tive Loa. Ba.a.cing Mecha.ism for Fog Computing Supported by Pa.ked Vehicles in IoV-SDN

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China.Communica.ions 2021年第2期18卷 271-289页

作者： a.med Ja.a. kadhim Ja.er Ibra.im Na.er Ministry of Educa.ion General Directorate for Education in Al-QadisiyahAl-Qadisiyah 58002Iraq

Internet of Vehicles(IoV)is a.new style of vehicula. a. hoc network tha. is used to connect the sensors of ea.h vehicle with ea.h other a.d with other vehicles’sensors through the *** sensors genera.e different ta.ks tha. should be a.a.yzed a.d processed in some given period of *** send the ta.ks to the cloud servers but these sending opera.ions increa.e ba.dwidth consumption a.d *** computing is a.simple cloud a. the network edge tha. is used to process the jobs in a.short period of time instea. of sending them to cloud computing *** some situa.ions,fog computing ca.not execute some ta.ks due to la.k of ***,in these situa.ions it tra.sfers them to cloud computing tha. lea.s to a. increa.e in la.ency a.d ba.dwidth occupa.ion ***,severa. fog servers ma. be fuelled while other servers a.e *** implies a. unfa.r distribution of *** this resea.ch study,we sha.l merge the softwa.e defined network(SDN)with IoV a.d fog computing a.d use the pa.ked vehicle a. a.sista.t fog computing *** ca. improve the ca.a.ilities of the fog computing la.er a.d help in decrea.ing the number of migra.ed ta.ks to the cloud *** increa.es the ra.io of time sensitive ta.ks tha. meet the *** a.dition,a.new loa. ba.a.cing stra.egy is *** works proa.tively to ba.a.ce the loa. loca.ly a.d globa.ly by the loca. fog ma.a.ers a.d SDN controller,*** simula.ion experiments show tha. the proposed system is more efficient tha. Va.ET-Fog-Cloud a.d IoV-Fog-Cloud fra.eworks in terms of a.era.e response time a.d percenta.e of ba.dwidth consumption,meeting the dea.line,a.d resource utiliza.ion.

关键词： IoV pa.ked vehicles SDN fog computing loa. ba.a.cing

Pra.tica. solution for sta.ilized pseudo-stea.y sta.e productivity index of multiple vertica. wells depleting closed reservoirs

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Petroleum 2020年第1期6卷 53-69页

作者： Sa.a. a.-Rbea.i Fa.hil S.kadhim METU-Northern Cyprus Ca.pus Cyprus University of Technology Iraq

The objective of this pa.er is introducing pra.tica. solutions for sta.ilized pseudo-stea.y sta.e productivity index a.d pressure beha.iors a.d flow regimes of multiple vertica. wells depleting closed recta.gula. *** introduces full understa.ding of reservoir performa.ce during tra.sient a.d pseudo-stea.y sta.e flow using pressure a.d pressure deriva.ive pa.terns a.d productivity index a.d productivity index deriva.ive *** pra.tica. solutions proposed in this study a.e relied on a.new a.proa.h for a.cura.e estima.ion of sta.ting time of pseudo-stea.y sta.e flow a.d sta.ilized productivity index by a.plying productivity index deriva.ive tha. converges ma.hema.ica.ly to zero a. the beginning of this *** is a.so a. a.tempt for pointing out the optima. reservoir configura.ion tha. ca. give ma.imum sta.ilized pseudo-stea.y sta.e productivity index for different wellbore types a.d distributions in the dra.na.e *** a.a.ytica. models a.e used in this study for describing pressure drop a.d productivity index beha.ior of multiple vertica. wells considering different reservoir configura.ions a.d different wellbore types a.d *** wells were a.sumed either fully or pa.tia.ly penetra.e the *** pressure models a.e justified to genera.e two pressure deriva.ives,one represents the deriva.ive of time dependent pressure drop a.d the second represents the deriva.ive of time-inva.ia.t pressure *** two deriva.ives a.e used for determining the sta.ting time of pseudo-stea.y sta.e flow a.d sta.ilized productivity index when both converge a.d ma.hema.ica.ly become *** models a.e used a.so to genera.e severa. plots for time-inva.ia.t or sta.ilized pseudo-stea.y sta.e productivity index for different reservoir geometries considering different wellbore *** ma.imum sta.ilized productivity index is illustra.ed in these plots a.d severa. a.a.ytica. models for the expected flow regimes a.e developed using pressure a

关键词： Pressure beha.ior a.d flow regimes Reservoir cha.a.teriza.ion Reservoir performa.ce Vertica. wells Modeling a.d simula.ion Productivity index

The impa.t of hydra.lic flow unit & reservoir qua.ity index on pressure profile a.d productivity index in multi-segments reservoirs

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Petroleum 2017年第4期3卷 414-430页

作者： Sa.a. a.-Rbea.i Fa.hil kadhim METU-Northern Cyprus Ca.pus Cyprus University of Technology Iraq

The objective of this pa.er is studying the impa.t of the hydra.lic flow unit a.d reservoir qua.ity index(RQI)on pressure profile a.d productivity index of horizonta. wells a.ting in finite *** ma.hema.ica. models ha.e been developed to investiga.e this *** models ha.e been built ba.ed on the pressure distribution in porous media.depleted by a.horizonta. well,consist of multi hydra.lic flow units a.d different reservoir qua.ity *** porous media.a.e a.sumed to be finite recta.gula. reservoirs ha.ing different configura.ions a.d the wellbores ma. ha.e different *** a.a.ytica. models describing flow regimes ha.e been derived wherein hydra.lic flow units a.d reservoir qua.ity index ha.e been included in a.dition to rock a.d fluid *** impa.t of these two pa.a.eters on reservoir performa.ce ha. a.so been studied using stea.y sta.e productivity *** ha. been found tha. both pressure responses a.d flow regimes a.e highly a.fected by the existence of multiple hydra.lic flow units in the porous media.a.d the cha.ge in reservoir qua.ity index for these *** cha.ge in the RQI could lea. to positive cha.ge in both pressure drop required for reservoir fluids to move towa.ds the wellbore a.d hence the productivity index.

关键词： reservoir reservoirs index

The a.tiba.teria. a.tivities of Copper Oxide Na.opa.ticles Synthesized Using La.er a.la.ion in Different Surfa.ta.ts a.a.nst Streptococcus muta.s

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Journa. of Renewa.le Ma.eria.s 2023年第5期11卷 2109-2123页

作者： Rua. H.a.ba. a.kadhim a.ha. M.Ha.eem La.er a.d Optoelectronics Engineering Depa.tment University of Technology-IraqBaghdadIraq Environmenta. Resea.ch Center University of Technology-IraqBaghdadIraq

Copper oxide na.opa.ticles(CuO NPs)were synthesised with la.er a.la.ion of a.copper sheet immersed in deionized wa.er(DW),cetrimonium bromide(CTa.),a.d sodium dodecyl sulpha.e(SDS),*** ta.get wa. irra.ia.ed with a.pulsed Nd:Ya. la.er a. 1064 nm,600 mJ,a.pulse dura.ion of 10 ns,a.d a.repetition ra.e of 5 *** CuO NPs colloida. were a.a.yzed using UV–Vis spectroscopy,the Fourier tra.sform infra.ed(FTIR)spectrometer,zeta.potentia.(ZP),X-ra. diffra.tion(XRD),tra.smission electron microscope(TEM)a.d field emission sca.ning electron microscopy(FESEM).The a.sorption spectra.of CuO NPs colloida. showed pea.s a. 214,215 a.d 220 nm a.d low-intensity pea.s a. 645,650 a.d 680 nm for SDS,CTa. a.d DW,*** NPs’colloida. results a.e(−21.6,1.2,a.d 80 mV)for nega.ively,neutra.ly,a.d positively cha.ged SDS,DW,a.d CTa.,*** XRD pa.tern of the NPs revea.ed the presence of CuO pha.e pla.es(110)(111),(20-2)a.d(11-1).The TEM ima.es revea.ed nea.ly spherica. NPs,with sizes ra.ging from 10–90,10–50,a.d 10–210 nm for CuO NPs mixed with DW,SDS a.d CTa.,*** ima.es of a.l the synthesized sa.ples illustra.e the forma.ion of spherica. na.ostructure a.d la.ge pa.ticles a.e *** CuO NPs were tested for a.tiba.teria. a.tivity a.a.nst Streptococcus muta.s by using the well diffusion *** this method,CuO NPs prepa.ed in DW a. a.concentra.ion of 200μg/mL showed a.grea.er inhibition zone a.a.nst Streptococcus muta.s.

关键词： Copper oxide na.opa.ticles(CuO NPs) la.er a.la.ion Streptococcus muta.s

The impa.t on a.pha.emission ra.es of va.ying dista.ces between a.CR-39 detector a.d a.pha.emitting bone sa.ples

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Ra.ia.ion Detection Technology a.d Methods 2021年第4期5卷 618-626页

作者： Na.a.Fa.ha. kadhim Ya.ser a.a. kadhim Ra.ha.S.a.med a.i a.Ridha.Mosta.a.Y.a.Mosta.a Depa.tment of Physics College of ScienceMustansiriyah UniversityBaghdadIraq Depa.tment of Physiology College of MedicineAl-Nahrain UniversityP.O.Box 70010AlkadhimiyaBaghdadIraq Physics Unit Science DepartmentRustaq College of EducationUniversity of Technology and Applied SciencesMuscatSultanate of Oman Physics Depa.tment Faculty of ScienceMinia UniversityEl-Minia 61519Egypt Ura. Federa. University Mira Street 19YekaterinburgRussia620002

Ba.kground Cha.ging the dista.ce between a.sa.ple a.d a. exposed solid-sta.e nuclea. tra.k detector a.fects the number of a.pha.tra.ks recorded by the *** concept ha. been used to distinguish high-energy a.pha.pa.ticles by computing the a.pha.emission ra.e a. two dista.ces(0 a.d 2 cm)from a.ima. bone *** a.d methods Two Cr-39 detectors were pla.ed in a.conta.ner with bone a.h inside to mea.ure the a.pha.emission ra.e when the detectors were in conta.t with the a.h a.d hung a. a.dista.ce of 2 cm from the *** The a.pha.emission ra.e wa. found to be 62.7×10^(−4) Bq cm^(−2) when the detector wa. in conta.t with the sa.ple(a.sma.l exposure a.ea.a.d 324.4×10^(−4) Bq cm^(−2) when the sa.ple wa. pla.ed 2 cm a.a.(a.la.ger exposure a.ea..a.ma.hema.ica. equa.iza.ion of the exposure a.ea. wa. conducted(the a.ea.of the detector exposed to the a.pha.emitter sa.ple a. a.dista.ce of 2 cm wa. equa.ized to the a.ea.exposed when in conta.t with the sa.ple).a.ter equa.iza.ion,a.reduction in the a.era.e va.ue of the a.pha.emission ra.e from 324.4×10^(−4) to 17.4×10^(−4) Bq cm^(−2) wa. *** The increa.e in dista.ce between the sa.ple a.d the detector a.lowed only high-energy a.pha.pa.ticles with a.ra.ge grea.er tha. the tra.eled dista.ce to rea.h the ***,this system ca. distinguish the type a.d number of nuclides in the sa.ple by cha.ging the dista.ce between the detector a.d the sa.ple a.cording to ea.h nucleus ***,the results show tha. the a.pha.emission ra.es in these bone sa.ples a.e higher tha. the loca. va.ues.

关键词： Ra.ioa.tivity a.ima. bone CR-39 detector Tra.k density a.pha.ra.ge

a. Eva.ua.ion to the Performa.ce of Eva.ua.ed Tube Sola. Hea.ers for a.id a.d Hot a.ea.

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Energy Engineering 2023年第3期120卷 587-596页

作者： a.a.d H.Sa.er Sa.a. Hussein kadhim Ha.eed B.Ma.ood Depa.tment of Chemistry College of ScienceUniversity of Thi-QarNasiriyahIraq Centre for Susta.na.le Cooling School of Chemical EngineeringUniversity of BirminghamBirminghamUK

Sola. energy a.plica.ions could be the best a.terna.ive to the conventiona. fuels for the purposes of domestic,wa.er a.d spa.e hea.ing a.d some industries in the sunny,a.id,a.d hot *** the present study,the performa.ce of a. eva.ua.ed tube sola. hea.er for wa.er hea.ing for months of Februa.y a.d Ma.ch wa. experimenta.ly *** wa. performed in a.hot a.d a.id a.ea.Na.iriya.City,South of Ira.).a.sola. hea.er with ten eva.ua.ed tube sola. collectors with a.ca.a.ity of 100 liter wa. used in the *** eva.ua.ed tube ha. a.length of 1.8m with a. outside dia.eter of 8 *** wa. observed tha. for the two selected months,wa.er tempera.ure of the sola. hea.er rea.hed a.ma.imum more tha. 70°C during sunny da.s with no hea. extra.tion from the ta.k of the sola. ***,hea. wa. extra.ted from the sola. collector with four different flowra.es 0.5,0.75,1,a.d 1.25 l/min,*** results showed tha. tempera.ure of the sola. hea.er beha.ed differently from the sta.ic *** the hea. extra.tion begun,there wa. a.gra.ua. a.d noticea.le decrea.e in the wa.er tempera.ure of the *** observed decrea.e wa. slight with the lowest flowra.e(0.25 l/m)a.d becomes sha.p with the highest flowra.e(1.25 l/min).However,wa.er tempera.ure of the sola. hea.er rema.ned higher tha. 40°C for the investiga.ed flowra.es except the ca.e of 1.25 l/*** results showed tha. eva.ua.ed tube sola. hea.er ca. work efficiently in a.id a.d hot a.ea. in winter a.d spring sea.ons when the conditions of sola. ra.ia.ion a.e suita.le.

关键词： Sola. energy eva.ua.ed tubes sola. collectors