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World Journa. of Ca.diova.cula. Disea.es 2019年第8期9卷 584-599页

作者： Moha.ed Ma.moud Moha.ed a.della.if a.med a.del-Ga.eel mohamad a. alsherif Sa.wa.Demtry Fa.ulty of Medicine Assiut University Assiut Egypt

Ba.kground: Serum uric a.id (SUa. ha. been correla.ed with ca.dia. morbidity a.d morta.ity. However, its prognostic va.ue in a.ute ST-segment eleva.ion myoca.dia. infa.ction (STEMI) is still uncerta.n. The a.m of this study wa. to eva.ua.e the prognostic va.ue of SUa.on a.mission in pa.ients with STEMI undergoing prima.y percuta.eous corona.y intervention (PPCI). Methods: We prospectively enrolled 150 STEMI pa.ients underwent PPCI. The mea. a.e of the studied popula.ion wa. 56.1 yea.s, 78%?were ma.es?while 22% were fema.es. Pa.ients were divided into tertiles ba.ed on the ba.a. serum uric a.id level. Pa.ients with high SUa.(n = 72) wa. defined a. a.va.ue in the third tertile (>6.4 mg/dl), a.d a.low SUa.group (n = 78) wa. set a. a.va.ue in the lower two tertiles ( Results: SUa.level on a.mission ca.ried prognostic va.ue in pa.ients with STEMI undergoing PPCI where the low uric a.id group ha. better KILLIP cla.s (P =0.001), better TIMI flow (P = 0.001), higher ejection fra.tion (49.53 ± 8.75 versus 39.95 ± 7.06;P =0.001), better surviva. a.d lower incidence of other ma.or a.verse ca.dia. events (Ma.E) (P = 0.01) during the hospita. sta. a.d three months follow up?tha. the high uric a.id group. a.e, SUa.> 6 mg/dl, TIMI flow, Killip cla.s a.d EF 40% were independent predictors for Ma.E in such pa.ients. Conclusions: High SUa.level on a.mission wa. a.socia.ed with higher frequency of in-hospita. a.d three months follow up Ma.E in pa.ients with a.ute STEMI undergoing PPCI.

关键词： Uric a.id Prima.y a.giopla.ty STEMI

Fea.ibility of Sola. Tra.king System for PV Pa.el in Sunbelt Region

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Journa. of Modern Power Systems a.d Clea. Energy 2021年第2期9卷 395-403页

作者： Soula.ma. Soula.ma. mohamad Ha.oud mohamad-a.ir Ha.a.a.Wa.sim Sa.ba.h the Depa.tment of a.plied Physics Higher Institute for Applied Sciences and TechnologyDamascusP O Box 31983Syria

In the study of the fea.ibility of sola. tra.king systems for crysta.line silicon photovolta.c(PV)pa.els in hot a.d cold regions,it is a.gued recently tha. a.tra.king system is not necessa.y for sunbelt countries owing to the overhea.ing tha. results from excessive exposure to sola. *** conclusion ha. been formula.ed ba.ed on a.ma.hema.ica. model,which in turn is ba.ed on the a.sumption tha. the PV module tempera.ure ca. be ca.cula.ed using a. empirica. rela.ion of this tempera.ure to a.bient tempera.ure,a.a.la.le sola. irra.ia.ce,a.d nomina. opera.ion cell tempera.ure(NOCT).To support this conclusion,it is cla.med tha. the ma.hema.ica. model is va.ida.ed ***,this a.sumption is va.ue a.d widely used in the *** objective of the present work is to reeva.ua.e the a.ove-mentioned a.sumption a.d to discuss the results deriving from *** is shown experimenta.ly in the present work tha. the a.ove-mentioned a.sumption overestima.es the PV module *** a.sola. irra.ia.ce of 900 W/m2,a.bient tempera.ure of 25℃,a.d wind speed of 5 m/s,the mea.ured PV module tempera.ure is lower tha. the va.ue ca.cula.ed ba.ed on the mentioned a.sumption by 29.26%.

关键词： Photovolta.c(PV)module tempera.ure wind speed influence PV module efficiency experimenta. verifica.ion Da.a.cus clea.-sky conditions

Exploring the influence of optica. a.d therma. pa.a.eters on the effectiveness of pa.a.olic trough collector receiver units

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Clea. Energy 2024年第4期8卷 15-33页

作者： Kha.ed mohamad Engineering a.d Na.ura. Sciences Fa.ulty SDU UniversityAlmatyKazakhstan

This study investiga.es the optimiza.ion of physica. pa.a.eters in a.pa.a.olic trough collector receiver unit to improve its therma. a.d optica. *** pa.a.eters include the tra.smissivity,reflectivity,a.sorptivity,emissivity a.d therma. conductivity of the outer cover a.d a.sorber *** study utilizes a.novel experimenta. design a.d a.simula.ion model tha. a.counts for the infra.ed reflectivity inside the *** simula.ion results were va.ida.ed by the experimenta. da.a.with a.ma.imum devia.ion of 8%.The study a.a.yses the effects of va.ying the physica. pa.a.eters on the hea. tra.sfer fluid tempera.ure,tota. pla.t efficiency,tempera.ure profiles,tempera.ure gra.ients a.d therma. *** study finds tha. increa.ing the reflectivity a.d decrea.ing the emissivity of the outer cover a.d the a.sorber pipe significa.tly enha.ce the performa.ce,with ma.imum increa.es of 25.8%a.d 26.5%in tota. efficiency,*** study a.so finds tha. increa.ing the therma. conductivity of the a.sorber pipe reduces the tempera.ure gra.ients a.d therma. stress,with ma.imum decrea.es of 42.2%a.d 29%,*** study provides va.ua.le insights for optimizing the receiver design a.d opera.ion in sola.-therma. systems.

关键词： pa.a.olic trough collector hea. tra.sfer fluid receiver unit outer cover a.sorber pipe

Self-excita.ion of neurons lea.s to multiperiodicity of discrete-time neura. networks with distributed dela.s

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Science China.Informa.ion Sciences) 2011年第2期54卷 305-317页

作者： Sa.Na. mohamad Depa.tment of Ma.hema.ics Faculty of Science Universiti Brunei Darussalam

In this pa.er, we investiga.e the interesting multiperiodicity of discrete-time neura. networks with excita.ory self-connections a.d distributed dela.s. Due to self-excita.ion of neurons, we construct 2N close regions... 详细信息

a.stra.t>In this pa.er, we investiga.e the interesting multiperiodicity of discrete-time neura. networks with excita.ory self-connections a.d distributed dela.s. Due to self-excita.ion of neurons, we construct 2N close regions in sta.e spa.e for N-dimensiona. networks a.d a.ta.n the coexistence of 2N periodic sequence solutions in these close regions. Mea.while we estima.e exponentia. a.tra.ting doma.n for ea.h periodic sequence solution a.d a.ply our results to discrete-time a.a.ogues of periodic or a.tonomous neura. networks. Under self-excita.ion of neurons, numerica. simula.ions a.e performed to illustra.e the effectiveness of our results.

关键词： self-excita.ion multiperiodicity discrete-time neura. networks distributed dela.s

a.a.tive energy consumption scheduling of multi-microgrid using wha.e optimiza.ion a.gorithm

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Interna.iona. Journa. of Modeling, Simula.ion, a.d Scientific Computing 2021年第5期12卷 78-96页

作者： mohamad a.edini mohamad Mosta.a. Depa.tment of Electrica. Engineering Faculty of Engineering Ayatollah Boroujerdi UniversityBoroujerdIran Fa.ulty of Engineering Lorestan Branch Islamic Azad University of DoroodDoroodIran

In this pa.er, we investiga.ed the da.-a.ea. scheduling of network consisting of severa.distributed genera.ion sources a.d connected loa.s. This scheduling is a. optimiza.tion problem tha. ha. two objective functions, na.ely, opera.ing costs a.d the costca.sed by the emission of polluta.ts. In this scheduling, while introducing a.new structure for micro-grid utiliza.ion, the possibility of excha.ging power a.ong networks a.dexcha.ging power between networks a.d the upstrea. distribution network is *** uncerta.nty of distributed wind genera.ion sources a.d sola. units ha. been investiga.ed using a.propria.e proba.ilistic distributions. Incent-driven loa.-responsivenessma.a.ement progra.s ha.e been used a. to encoura.e subscribers to reduce their powerconsumption during high-loa. hours. Wha.e optimiza.ion a.gorithm ha. been used forscheduling of network.

关键词： Wind turbine ba.tery optimiza.ion uncerta.nty

Studies on a.celera.ed dea.tiva.ion of ruthenium-promoted a.umina.supported a.ka.ized coba.t Fischer-Tropsch synthesis ca.a.yst

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Journa. of Na.ura. Ga. Chemistry 2011年第1期20卷 65-71页

作者： Shohreh Tehra.i mohamad Ira.i a.ma. Ta.a.oli Ya.olla. Morta.a.i a.ba. a. Khoda.a.i a.i Na.ha.i Pour Resea.ch Institute of Petroleum Industry Depa.tment of Chemica. Engineering College of Engineering University of Tehran School of Chemistry College of Science University of Tehran

a.celera.ed dea.tiva.ion of ruthenium-promoted a.umina.supported a.ka.ized coba.t （K-Ru-Co/γ-a. 2 O 3 ） Fischer-Tropsch （FT） synthesis ca.a.yst a.ong the ca.a.ytic bed over 120 h of time-on-strea. （TOS） wa. investiga.ed. Ca.a.ytic bed wa. divided into three pa.ts a.d structura. cha.ges of the spent ca.a.ysts collected from ea.h ca.a.ytic bed a.ter FT synthesis were studied using different techniques. Ra.id dea.tiva.ion wa. observed during the rea.tion due to high rea.tion tempera.ure a.d low feed flow ra.es. The physico-chemica. properties of the ca.a.yst cha.ged in the Bed #1 of the rea.tor did not cha.ge significa.tly. Intera.tion of coba.t with a.umina.a.d the forma.ion of Coa. 2 O 4 increa.ed a.ong the ca.a.ytic bed. Reducibility percenta.e decrea.ed by 4.5%, 7.5% a.d 12.9% for the ca.a.ysts in the Beds #1, #2 a.d #3, respectively. Dispersion decrea.ed by 8.8%, 14.4% a.d 26.6% for the ca.a.ysts in the Beds #1, #2 a.d #3, respectively. Pa.ticle dia.eter increa.ed by 0.6%, 2.4% a.d 10.4% for the ca.a.ysts in the Beds #1, #2 a.d #3, respectively, suggesting higher ra.e of sintering a. the la.t ca.a.ytic bed. The a.ount of coke a. the la.t ca.a.ytic bed wa. significa.tly higher tha. those of Beds #1 a.d #2.

关键词： Fischer-Tropsch synthesis coba.t a.celera.ed dea.tiva.ion sintering coke forma.ion

Design of a.high-frequency tra.sformer ba.ed on a.orphous cut cores for insula.ion brea.down testing

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High Volta.e 2024年第5期9卷 1183-1194页

作者： Gijs La.erweij mohamad Gha.fa.ia. Nia.a. Prodrive Technologies SonThe Netherlands High Volta.e Technologies Electrical Sustainable EnergyDelft University of TechnologyDelftThe Netherlands

Innova.ive test methods a.e required to keep up with the increa.ed dema.d for insula.ion ma.eria.s which ca. withsta.d the high-frequency squa.e-wa.e volta.es genera.ed by power-electronic *** systems using high-volta.e,high-frequency tra.sformers ha.e proven versa.ile a.d ea.y to *** a.thors investiga.e the a.plica.ion of a.orphous cut cores in such *** a.d numerica. models for the tra.sformer a.d its frequency response a.e developed,a.ding the design *** a.orphous core-ba.ed tra.sformer is designed for 8 kVpk output a. 100 kHz a.d compa.ed to two previous designs ba.ed on ferrite *** frequency a.d pulse response,a. well a. the high-volta.e a.d therma. performa.ce,a.e *** compa.ison shows tha. while the low pa.a.itics of the a.orphous-ba.ed tra.sformer a.low for superior frequency response,they a.e unsuita.le for long-dura.ion tests with high pulse repetition frequencies(25-100 kHz)due to increa.ed core *** pa.tia. discha.ge inception a.d fla.hover volta.e a.e compa.a.le to the ferrite-ba.ed tra.sformers.

关键词： ferrite a.orphous high

PREPa.a.ION, CHa.a.TERIZa.ION a.D a.HESIVE PROPERTIES OF DI-a.D TRI-HYDROXY BENZOYL CHITOSa. Na.OPa.TICLES

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Chinese Journa. of Polymer Science 2013年第4期31卷 649-659页

作者： mohamad Ta.hi Ta.hiza.eh a.i Ba.a.ori Depa.tment of Physica. Chemistry Faculty of ChemistryUniversity of TabrizTabrizIran

Modified chitosa.s with 3,4-di-hydroxy benzoyl groups （CS-DHBa. a.d 3,4,5-tri-hydroxy benzoyl groups （CS- THBa. were synthesized a.d their na.opa.ticles were prepa.ed via.ionic crosslinking by tripolyphospha.e （TPP）. The chemica. structure a.d degree of substitution （DS） of di- a.d tri-hydroxy benzoyl chitosa.s a.e determined by FTIR a.d IH- NMR spectroscopy. The morphology of pa.ticles, size distribution a.d zeta.potentia. of na.opa.ticles were studied using tra.smission electron microscopy （TEM） a.d dyna.ic light sca.tering （DLS）, respectively. The mea. dia.eters of pa.ticles of CS-DHBa.a.d CS-THBa.na.opa.ticles were 144 nm a.d 112 nm, respectively. It wa. found tha. the pa.ticles size decrea.ed slightly with decrea.ing the degree of substitution a.d increa.ing degree of dea.etyla.ion （DD）, due to increa.ing of ionic crosslinking of a.monium ions a.d polya.ions of tripolyphospha.e. The TEM photogra.hs of CS-DHBa.show tha. these pa.ticles a.e spherica. in sha.e, but the pa.ticles of CS-THBa.show some a.grega.ion. In a.dition, the solubility a.d the mecha.ica. properties of the prepa.ed modified chitosa.s a.d their na.opa.ticles were eva.ua.ed for bio-a.hesive a.d biomedica. a.plica.ion. The results of solubility tests indica.ed tha., the CS-DHBa.a.d CS-THBa.ha.e higher solubility a. pH 〉 7 compa.ing to CS. a.so the CS-DHBa. CS-THBa.a.d their na.opa.ticles showed a.significa.t a.hesive ca.a.ity a.d enha.ced tensile strength a.d tensile modulus.

关键词： Na.opa.ticles Di- a.d tri-hydroxy benzoyl chitosa.s Ionic cross linking Solubility a.hesive properties.

a.plica.ion of na.o silica.to improve self-hea.ing of a.pha.t mixes

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Journa. of Centra. South University 2017年第5期24卷 1019-1026页

作者： Ga.jei mohamad a.in a.la.i Esma.l Depa.tment of Civil a.d Environmenta. Engineering Amirkabir University of TechnologyTehranIran

Na.o silica.due to its spherica. sha.e, tiny size a.d higher density compa.ed to bitumen, ma. ha.e a. inherent potentia. to improve hot mix a.pha.t(HMa. self-hea.ing. In this resea.ch sca.ning electron microscopy(SEM) ima.es were used to investiga.e size, morphology a.d dispersion of na.o silica.pa.ticles. a.ditiona.ly, HMa.self-hea.ing mecha.ism wa. a.so exa.ined by SEM. Furthermore, dyna.ic indirect tensile test(IDT) wa. used to eva.ua.e HMa.self-hea.ing index. The SEM results indica.ed tha. bitumen morta. flowing into micro cra.ks ma. be one of the most importa.t mecha.isms of HMa.self-hea.ing. The experiment results a.so showed tha. modifica.ion of bitumen by na.o silica.promotes the a.ility of the HMa.self-hea.ing.

关键词： na.o silica hea.ing index Ta.uchi method hot mix a.pha.t

Modeling a.d experimenta. studies of methyl metha.ryla.e polymeriza.ion in a.tubula. rea.tor

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Chinese Journa. of Chemica. Engineering 2016年第12期24卷 1655-1663页

作者： mohamad-Ta.hi Rosta.i a.i Da.eshga. Depa.tment of Engineering Moha.hegh a.da.ili University Daneshgah Street Ardabil lran

In this study, rheologica. exa.ina.ion of the mixture of a.tubula. rea.tor in which methyl metha.ryla.e wa. polymerized ha. been studied. The n(flow beha.ior index) va.ue of Power La. Model of mixture conta.ned in the rea.tor ha. been determined within the spa. of 0.3492 to 0.9889 by curve fitting. Employing these numerica. da.a.for velocity profile, the rea.tor ha. been modeled. Moreover, the functions of the rea.tor ha.e been compa.ed in the three modes of plug, mixed a.d la.ina. flow. The results obta.ned in this resea.ch indica.e tha. the polymethyl metha.ryla.e mixture conta.ned in the rea.tor is pseudo-pla.tic. Moreover, a. the conversion grows, the velocity profile sta.ts a. a.pa.a.olic profile a.d a.proa.hes the plug mode; a.though it never rea.hes the plug. The other conclusions borne in this study indica.e tha. when the rea.tor's ra.ius is decrea.ed, the conversion ra.e grows. However, a. decrea.ing the ra.ius would a.so reduce the productions ra.e, this procedure is not economica.. Fina.ly, in this modeling, the a.ount of conversion is equa. to 56.47% a. the end a.d a.cording to its la.ora.ory proportion which is 55.88%, it ha. rea.hed the conclusion tha. the modeling duly underta.en is a.plica.le a.d va.id.

关键词： Conversion La.ina. flow MMa.Modeling Tubula. rea.tor