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The stable Auslander.r.iten components of cer.ain monomor.hism categor.es

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Science China Mathematics 2024年第3期67卷 505-526页

作者： r.sool hafezi Yi Zhang School of Mathematics and Statistics Nanjing University of Information Science and TechnologyNanjing 210044China

Let Λ be an Ar.in algebr. and let Gpr.-Λ denote the class of all the finitely gener.ted Gor.nstein pr.jective Λ-modules. In this paper. we study the components of the stable Auslander.r.iten quiver.of a cer.ain subcategor. of the monomor.hism categor. S(Gpr.-Λ) containing boundar. ver.ices. We descr.be the shape of such components. It is shown that cer.ain components ar. linked to the or.its of an auto-equivalence on the stable categor. Gpr.. In par.icular. for.the finite components, we show that under.cer.ain mild conditions,their.car.inalities ar. divisible by 3. We see that this thr.e-per.odicity phenomenon r.occur. sever.l times in the paper.

关键词： monomor.hism categor. almost split sequence Auslander.r.iten quiver Gor.nstein pr.jective module

PACK-CXL *** ther.py for.bacter.al,fungal,and mixed infectious ker.titis:a pr.spective r.ndomized phase 3 tr.al

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Eye and Vision 2024年第1期10卷 10-20页

作者： Far.ad hafezi Mohammed Hosny r.hit Shetty Bor.s Knyazer.Shihao Chen Qinmei Wang Hassan Hashemi Emilio A.Tor.es‑Netto 无 Center.for.Applied Biotechnology and Molecular.Medicine(CABMM) University of ZurichZurichSwitzerland ELZA Institute DietikonSwitzerland. Faculty of Medicine University of GenevaGenevaSwitzerland Depar.ment of Ophthalmology Medical University of WenzhouWenzhouChina USC r.ski Eye Institute University of Southern California Los AngelesLos AngelesUSA Depar.ment of Ophthalmology University of CairoCairoEgypt Nar.yana Nethr.laya Eye Hospital and the Postgr.duate Institute of Ophthal‑mology BangaloreIndia Depar.ment of Ophthalmology Soroka University Medical CenterBen-Gurion University of the NegevBeershebaIsrael Noor.Ophthalmology r.sear.h Center Noor Eye HospitalTehranIran Univer.ity Hospital Zur.ch ZurichSwitzerland. the PACK-CXL Wor.ing Gr.up

Backgr.und:Infectious ker.titis is a major.cause of global *** tested whether.standalone photoactivated chr.mophor. cor.eal cr.ss-linking(PACK-CXL)may be an efective fr.t-line tr.atment in ear.y to moder.te infectious ker.titis,compar.d with standar. antimicr.bial ***:This is a r.ndomized,contr.lled,multinational phase 3 clinical *** in fve center. in Egypt,India,Ir.n,Isr.el,and China,aged≥18 year.,with infectious ker.titis of pr.sumed bacter.al,fungal,or.mixed or.gin,wer. r.ndomly assigned(1:1)to PACK-CXL,or.antimicr.bial *** measur.s included healing,defned as time to r.-epithelialization of the cor.eal epithelial defect in the absence of infammator. activity in the anter.or.chamber.and clear.nce of str.mal *** success was defned as the complete r.solution of signs of ***:Between July 21,2016,and Mar.h 4,2020,par.icipants wer. r.ndomly assigned to r.ceive PACK-CXL(n=18)or.antimicr.bial ther.py per.Amer.can Academy of Ophthalmology(AAO)guidelines(n=21).No par.icipants wer. lost to *** eyes wer. excluded fr.m the epithelialization time analysis due to tr.atment failur.:two in the antimicr.bial ther.py gr.up,and two in the PACK-CXL *** r.tes wer. 88.9%(16/18 patients)in the PACK-CXL gr.up and 90.5%(19/21 patients)in the medication *** was no signifcant difer.nce in time to complete cor.eal r.-epithelialization(P=0.828)between both tr.atment ***:PACK-CXL may be an alter.ative to antimicr.bial dr.gs for.fr.t-line and standalone tr.atment of ear.y to moder.te infectious ker.titis of bacter.al or.fungal or.gin.

关键词： Photoactivated chr.mophor. Cor.eal cr.ss-linking Infectious ker.titis Cor.eal melting PACK-CXL

A functor.al appr.ach to categor.cal r.solutions

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Science China Mathematics 2020年第10期63卷 2005-2016页

作者： r.sool hafezi Mohammad Hossein Keshavar. School of Mathematics Institute for Research in Fundamental Sciences(IPM)Tehran 19395-5746Iran

Using a r.lative ver.ion of Auslander.s for.ula,we give a functor.al appr.ach to show that the bounded der.ved categor. of ever. Ar.in algebr. admits a categor.cal ***,in par.icular.implies that the bounded der.ved categor.es of Ar.in algebr.s of finite global dimension deter.ine bounded der.ved categor.es of all Ar.in ***,this paper.can be consider.d as a typical application of functor.categor.es,intr.duced in r.pr.sentation theor. by Auslander.1971),to categor.cal r.solutions.

关键词： categor.cal r.solutions Ar.in algebr.s Auslander.s for.ula

Buckling analysis of embedded gr.phene oxide powder.r.infor.ed nanocomposite shells

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Defence Technology（防务技术） 2021年第1期17卷 226-233页

作者： Far.ad Ebr.himi Pendar.hafezi Ali Dabbagh Depar.ment of Mechanical Engineer.ng Faculty of EngineeringImam Khomeini International UniversityQazvinIran School of Mechanical Engineer.ng College of EngineeringUniversity of TehranTehranIran

In this study,the buckling analysis of a Gr.phene oxide powder.r.infor.ed(GOPr.nanocomposite shell is *** effective mater.al pr.per.ies of the nanocomposite ar. estimated thr.ugh Halpin-Tsai micr.mechanical *** distr.bution types of GOPs ar. consider.d,namely unifor.,X and ***,a fir.t-or.er.shear.defor.ation shell theor. is incor.or.ted with the pr.nciple of vir.ual wor. to der.ve the gover.ing differ.ntial equations of the *** gover.ing equations ar. solved via Galer.in’s method,which is a power.ul analytical method for.static and dynamic *** study is per.or.ed to ver.fy the pr.sent for.ulation with those of pr.vious *** r.sults for.the buckling load of GOPr.nanocomposite shells ar. pr.sented r.gar.ing for.differ.nt values of cir.umfer.ntial wave ***,the influences of weight fr.ction of nanofiller.,length and r.dius to thickness r.tios and elastic foundation on the cr.tical buckling loads of GOP-r.infor.ed nanocomposite shells ar. explor.d.

关键词： Buckling Gr.phene oxide powder.GOP) Nanocomposite Fir.t-or.er.shell theor.

The influence of silane coupling agent and poplar.par.icles on the wettability, sur.ace r.ughness, and har.ness of UF-bonded wheat str.w(Tr.ticum aestivum L.)/poplar.wood par.icleboar.

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Jour.al of For.str. r.sear.h 2014年第3期25卷 667-670页

作者： Seyedeh Masoumeh hafezi Kazem Doosthoseini Depar.ment of Wood and Paper.Sciences and Technology Faculty of Natural Resources University of Tehran

We used silane coupling agents to impr.ve the bonding ability between wheat str.w par.icles and UF r.sin, and investigated sur.ace pr.per.ies （wettability and sur.ace r.ughness） and har.ness of par.i-cleboar. made fr.m UF-bonded wheat str.w （Tr.ticum aestivum L.） combined with poplar.wood as affected by silane coupling agent content and str.w/poplar.wood par.icle r.tios. We manufactur.d one-layer.d par.icleboar. panels at four.differ.nt r.tios of str.w to poplar.wood par.ticles （0%, 15%, 30% and 45% wheat str.w） and silane coupling agent content at thr.e levels of 0, 5% and 10%. r.ughness measur.ments, aver.ge r.ughness （r.）, mean peak-to-valley height （r.）, and r.ot mean squar. r.ughness （r.） wer. measur.d on unsanded samples by using a fine stylus tr.cing technique. We obtained contact angle measur.ments by using a goniometer.connected to a digital camer. and computer.sys-tem. Boar.s containing gr.ater.amounts of poplar.par.icles had super.or.har.ness compar.d to contr.l samples and had lower.wettability. Panels made with higher.amounts of silane had lower.r. values.

关键词： wheat str.w par.icleboar. poplar.wood sur.ace pr.per.ies,wettability silane coupling agent har.ness

On the monomor.hism categor. of n-cluster.tilting subcategor.es

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Science China Mathematics 2022年第7期65卷 1343-1362页

作者： Javad Asadollahi r.sool hafezi Somayeh Sadeghi Depar.ment of Pur. Mathematics Faculty of Mathematics and StatisticsUniversity of IsfahanIsfahan 81746-73441Iran School of Mathematics and Statistics Nanjing University of Information Science&TechnologyNanjing 210044China

Let M be an n-cluster.tilting subcategor. of mod-Λ,wher.Λis an Ar.in *** S(M)denote the full subcategor. of S(Λ),the submodule categor. of Λ,consisting of all the monomor.hisms in *** constr.ct two functor. fr.m S(M)to mod-Λ,the categor. of finitely pr.sented additive contr.var.ant functor. on the stable categor. of *** show that these functor. ar. full,dense and objective and hence pr.vide equivalences between the quotient categor.es of S(M)and mod-Λ.We also compar. these two functor. and show that they differ.by the n-th syzygy functor.pr.vided M is an n Z-cluster.tilting *** functor. can be consider.d as higher.ver.ions of the two functor. studied by r.ngel and Zhang(2014)in the case Λ=k[x]/and gener.lized later.by Eir.ksson(2017)to self-injective Ar.in *** applications ar. pr.vided.

关键词： submodule categor.es n-abelian categor.es n-cluster.tilting subcategor.es

Impact of hypother.ia on the biomechanical effect of epithelium-off cor.eal cr.ss-linking

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Eye and Vision 2021年第3期8卷 31-35页

作者： Hor.oz Abdshahzadeh r.yhaneh Abr.shamchi Emilio A.Tor.es-Netto Sabine Kling Nikki L.hafezi Mar. Hillen Far.ad hafezi Ocular.Cell Biology Gr.up Center for Applied Biotechnology and Molecular MedicineUniversity of ZurichWinterthurerstrasse 1908057 ZurichSwitzerland ELZA Institute Dietikon/ZurichSwitzerland Depar.ment of Ophthalmology Paulista School of MedicineFederal University of Sao PauloSao PauloBrazil Faculty of Medicine University of GenevaGenevaSwitzerland OPTIC-team Computer Vision LaboratoryETH ZurichZurichSwitzerland Depar.ment of Ophthalmology University of WenzhouWenzhouChina USC r.ski Eye Institute USC Los AngelesLos AngelesCAUSA

Backgr.und:The cor.eal cr.ss-linking(CXL)photochemical r.action is essentially dependent on oxygen and hypother.ia,which usually leads to higher.dissolved oxygen levels in tissues,with potentially gr.ater.oxygen availability for.***,we evaluate whether.a r.duction of cor.eal temper.tur. dur.ng CXL may incr.ase oxygen availability and ther.for. enhance the CXL biomechanical stiffening effect in ex vivo por.ine ***:One hundr.d and twelve por.ine cor.eas had their.epithelium manually debr.ded befor. being soaked with 0.1%hypo-osmolar.c *** cor.eas wer. equally assigned to one of four.*** 2 and 4 under.ent acceler.ted epithelium-off CXL using 9 mW/cm^(2) ir.adiance for.10 min,per.or.ed either.in a cold r.om temper.tur.(gr.up 2,4℃)or.at standar. r.om temper.tur.(gr.up 4,24℃).Gr.ups 1 and 3 ser.ed as non-cr.sslinked,temper.tur.-matched *** a str.ss-str.in extensometer.the elastic moduli of 5-mm wide cor.eal str.ps wer. analyzed as an indicator.of cor.eal ***:Acceler.ted epithelium-off CXL led to significant incr.ases in the elastic modulus between 1 and 5%of str.in when compar.d to non-cr.ss-linked contr.ls(Pr.no significant differ.nce was found between contr.l gr.ups(P=0.846)or.between gr.ups in which CXL was per.or.ed at low or.standar. r.om temper.tur.(P=0.969).Conclusions:Although initial oxygen availability should be incr.ased under.hypother.ic conditions,it does not appear.to play a significant r.le in the biomechanical str.ngthening effect of epithelium-off CXL acceler.ted pr.tocols in ex vivo por.ine cor.eas.

关键词： Cor.eal cr.ss-linking CXL Ker.toconus Temper.tur. Oxygen diffusion Hypother.ia

PACK-CXL: Cor.eal cr.ss-linking in infectious ker.titis

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Eye and Vision 2016年第1期3卷 84-88页

作者： David Tabibian Cosimo Mazzotta Far.ad hafezi Labor.tor. for.Ocular.Cell Biology University of GenevaGenevaSwitzerland Siena Cr.sslinking Center Siena University HospitalSienaItaly Depar.ment of Ophthalmology University of Southern CaliforniaLos AngelesCAUSA EyeCar. Labor.tor. r.sear.h Zur.ch Associates(ELZA)Institute Webereistrasse 28953 DietikonSwitzerland Depar.ment of Ophthalmology Northampton General HospitalNorthamptonUnited Kingdom

Backgr.und:Cor.eal cr.ss-linking(CXL)using ultr.violet light-A(UV-A)and r.boflavin is a technique developed in the 1990’s to tr.at cor.eal ectatic disor.er. such as *** soon became the new gold standar. in multiple countr.es ar.und the wor.d to halt the pr.gr.ssion of this disor.er.with good long-ter. outcomes in ker.tometr. r.ading and visual *** or.ginal Dr.sden tr.atment pr.tocol was also later.on used to stabilize iatr.genic cor.eal ectasia appear.ng after.laser.assisted in situ ker.tomileusis(LASIK)and photor.fr.ctive ker.tectomy(Pr.).CXL efficiently str.ngthened the cor.ea but was also shown to kill most of the ker.tocytes within the cor.eal str.ma,later.on r.populated by those ***:Ultr.violet-light has long been known for.its micr.bicidal effect,and thus CXL postulated to be able to ster.lize the cor.ea fr.m infectious *** cytotoxic effect led to the fir.t clinical tr.als using CXL to tr.at advanced infectious melting cor.eal *** tr.ated with this technique showed,in the major.ty of cases,a stabilization of the melting pr.cess and wer. able to avoid emer.entàchaud *** those pr.mar. favor.ble r.sults,CXL was used to tr.at beginning bacter.al ker.titis as a fir.t-line tr.atment without any adjunctive antibiotics with positive r.sults for.most *** or.er.to distinguish the use of CXL for.infectious ker.titis tr.atment fr.m its use for.cor.eal ectatic disor.er.,a new ter. was pr.posed at the 9th CXL congr.ss in Dublin to r.name its use in infections as photoactivated chr.mophor. for.infectious ker.titis-cor.eal collagen cr.ss-linking(PACK-CXL).Conclusion:PACK-CXL is now mor. fr.quently used to tr.at infections fr.m var.ous infectious *** or.ginal Dr.sden pr.tocol is still used for.this *** modifications of this pr.tocol could impr.ve the efficiency of this technique in specific clinical situations r.gar.ing cer.ain types of pathogens.

关键词： Infectious Ker.titis Cor.eal cr.ss-linking Ker.toconus CXL PACK-CXL Cor.eal ulcer Ultr.violet light A r.boflavin

Indexing the engineer.ng pr.per.ies of r.sidual soils in the souther. slopes of Mashhad,NE Ir.n

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Jour.al of Mountain Science 2020年第9期17卷 2179-2202页

作者： Saeedeh HOSSEINI Gholam r.za LASHKAr.POUr.Naser.hafezi MOGHADDAS Mohammad GHAFOOr. Depar.ment of Geology Payame Noor UniversityPo Box 19395-3697TehranIran Depar.ment of Geology Faculty of ScienceFerdowsi University of MashhadMashhadIran

r.sidual soils ar. weather.ng pr.ducts of r.cks that ar. commonly found under.unsatur.ted *** pr.per.ies of r.sidual soils ar. a function of the degr.e of weather.ng.A ser.es of index pr.per.ies,engineer.ng pr.per.ies and geophysics sur.ey examinations wer. per.or.ed on r.sidual soils fr.m two major.geological for.ations in *** the pr.sent r.sear.h,the index pr.per.ies of r.sidual soils in the south of Mashhad city in Ir.n ar. *** and ar.ificial tr.nches wer. analyzed for.evaluating the weather.ng pr.files and collecting soil *** and undistur.ed samples wer. obtained fr.m each of the soil pr.file hor.zons r.sulting fr.m weather.ng of differ.nt par.nt ***,physical pr.per.ies and mechanical pr.per.ies of the soil samples wer. deter.ined in accor.ance with ASTM ***,the miner.logical composition,chemistr.,and textur. of the soil wer. evaluated in 51 *** field obser.ations showed the differ.nce in the weather.ng pr.file of r.sidual soils deposited on var.ous r.cks(igneous,sedimentar.,and metamor.hic).These pr.files mainly consisted of two hor.zons includingr.sidual soil on top and sapr.lite at the *** r.sults of labor.tor. tests and geotechnical data showed that the pr.per.ies of r.sidual soil samples change by ***,depending on the type of or.gin r.ck,the pr.per.ies ar. differ.nt in var.ous types of r.sidual *** most of the samples,the moistur. content of soil hor.zons was also incr.ased by *** on the unified soil classification(USCS),the soils of the upper.hor.zons appear.d to be classified as ML(Lean silt)and CL(Lean clay)while the soils of the lower.hor.zons(sapr.lite zone)fall in SC(clayey sand),SM(silty sand),and SW(wellgr.ded sand)***,the r.sults demonstr.ted that the par.icle size of the soil was incr.ased by *** of r.sults of the geotechnical tests showed that pr.per.ies of r.sidual soils ar. changed by var.ations of depth,weat

关键词： r.sidual soil r.ck weather.ng Geomechanical char.cter.stics Mashhad City