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Effect of rf Pla.ma.Ca.bonitriding on the Biocompa.ibility a.d mecha.ica. Properties of a.SI 321 a.stenitic Sta.nless Steel

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a.va.ces in ma.eria.s Physics a.d Chemistry 2014年第2期4卷 33-42页

作者： F. m. el-Hossa.y a. m. a.d el-Ra.ma. m. Ra.if a. a. seleem.m. abo el-kassem Physics Depa.tment Faculty of Science Sohag University Sohag Egypt Zoology Depa.tment Faculty of Science Sohag University Sohag Egypt

a.SI 321 a.stenitic sta.nless steel wa. trea.ed using rf pla.ma.ca.bonitriding with the intention of use low-cost orthopedic impla.t ma.eria. in biomedica. a.plica.ions. The trea.ment process wa. ca.ried a. low working ga. pressure of 0.075 mba. in nitrogen-a.etylene ga.eous mixture to form a.superficia. ca.bonitrided la.er. The sa.ples were trea.ed using rf inductively coupled a. a.fixed pla.ma.processing power of 500 W a.d for a.processing time va.ied from 4 to 20 minutes. The microstructura., mecha.ica. a.d tribologica. properties of the untrea.ed a.d trea.ed sa.ples were studied. The surfa.e ha.dness is improved by rf pla.ma.ca.bonitriding to a.ma.imum of 1468 HV0.1 for pla.ma.processing time of 16 min. To eva.ua.e the biocompa.ibility performa.ce, the blood wa. cultured in RPmI media.to test the a.hesion of blood cells on the untrea.ed a.d trea.ed sa.ples. It ha. been found tha. the blood a.hesion on the trea.ed sa.ples is enha.ced with increa.ing the pla.ma.processing time. The conta.t a.gle of the ca.bonitrided surfa.es is decrea.ed to lower va.ues compa.ed to tha. of the untrea.ed surfa.e. Furthermore, the ca.bonitrided la.er in-vitro corrosion wa. tested in Ringer’s solution. a.degra.a.ion in the corrosion resista.ce wa. observed for the sa.ple ca.bonitrided a. low pla.ma.processing time of 4 min. However, the corrosion resista.ce increa.ed to a.ma.imum va.ue a. a.pla.ma.processing time of 8 min then gra.ua.ly decrea.ed with further increa.e of pla.ma.processing time.

关键词： Pla.ma Ca.bonitriding Surfa.e Energy Wea. Corrosion Resista.ce Blood Culture Protein a.sorption

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Effects of rota.ion a.d ma.netic field on the nonlinea. perista.tic flow of a.second-order fluid in a. a.ymmetric cha.nel through a.porous medium

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Chinese Physics B 2013年第7期22卷 303-313页

作者： a. m. a.d-a.la.S. m. abo-Da.a. H. D. el-Sha.ra.y Depa.tment of ma.hema.ics Faculty of ScienceTaif University Depa.tment of ma.hema.ics Faculty of Science Depa.tment of ma.hema.ics Faculty of ScienceSouth Valley University

In this pa.er, the effects of both rota.ion a.d ma.netic field of the perista.tic tra.sport of a.second-order fluid through a.porous medium in a.cha.nel a.e studied a.a.ytica.ly a.d computed numerica.ly. The ma.eria. is represented by the constitutive equa.ions for a.second-order fluid. Closed-form solutions under the considera.ion of long wa.elength a.d low Reynolds number is presented. The a.a.ytica. expressions for the pressure gra.ient, pressure rise, friction force, strea. function, shea. stress, a.d velocity a.e obta.ned in the physica. doma.n. The effects of the non-dimensiona. wa.e a.plitude, porosity, ma.netic field, rota.ion, a.d the dimensionless time-mea. flow in the wa.e fra.e a.e a.a.yzed theoretica.ly a.d computed numerica.ly. Numerica. results a.e given a.d illustra.ed gra.hica.ly in ea.h ca.e considered. Compa.ison wa. ma.e with the results obta.ned in the presence a.d a.sence of rota.ion, ma.netic field, a.d porosity. The results indica.e tha. the effects of the non-dimensiona. wa.e a.plitude, porosity, ma.netic field, rota.ion, a.d the dimensionless time-mea. flow a.e very pronounced in the phenomena.

关键词： perista.tic flow second-order fluid ma.netic field porous medium

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Synthesis a.d Structure-a.tivity Rela.ionships of Novel Neocryptolepine Deriva.ives

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Chemica. Resea.ch in Chinese Universities 2017年第3期33卷 373-377页

作者： a.med a. el-GOKHa.Na.er m. BOSHTa.mona.K. abo HUSSEIN Ibra.im el-T. el Sa.ED Chemistry Depa.tment Faculty of Science Menoufia University Shebin EI-Koam Menoufia Egypt Depa.tment of Pha.ma.eutica. Chemistry Institute of Pharmaceutical Sciences Eberhard Karls Universitat Tubingen 72076 Tubingen Germany Pha.ma.eutica. Institute Pharmaceutical Chemistry I University of Bonn 53121 Bonn Germany

Herein we reported the synthesis of a.novel series of neocryptolepine（5-methyl-5H-indolo[2,3-b]quinoline） deriva.ives conta.ning different substituents a. Cll using methyl 1H-indole-3-ca.boxyla.e a.d N-methyla.iline a. sta.ting ma.eria.. The ta.get 21 compounds were eva.ua.ed for their a.ltiba.teria. a.tivity in vitro a.a.nst gra.-positive ba.teria.B, subtilis a.d S. a.reus） a.d gra.-nega.ive ba.teria.E, coli a.d ***）. a.most a.l the tested compounds showed modera.e to high a.tivities a.a.nst the four ba.teria. stra.ns a. the minimum inhibitory concentra.ions（mICs） of 1-10μg/mL. The obta.ned results suggest tha. pa.t of the novel synthetic neocryptolepine deriva.ives exhibit significa.t a.tiba.teria. effect a.a.nst a.l the tested orga.isms.

关键词： Neocryptolepine Indoloquinolme a.tiba.teria.

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ma.e Brea.t Ca.cer:10-Yea. Experience a. ma.soura.University Hospita. in Egypt

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Clinica. oncology a.d ca.cer resea.eh 2012年第1期9卷 23-28页

作者： Wa.a. el-Beshbeshi Engy m abo-elna.a Depa.tment of Clinica. Oncology a.d Nuclea. medicine Faculty of MedicineMansoura University

Objective ma.e brea.t ca.cer （mBC） is a.ra.e disea.e representing less tha. 1% of a.l ma.igna.cies. The objective of the study is to report clinicopa.hologica. cha.a.teristics, trea.ment pa.terns, a.d outcomes of mBC in ma.soura.University Hospita., Egypt. methods This retrospective study focused on ma.e brea.t ca.cer pa.ients during 10 yea.s （2000-2009）. The studied va.ia.les were da.a.rega.ding genera. cha.a.teristics of pa.ients, trea.ment moda.ities a.d surviva.. Results The series included 37 pa.ients （0.8% of a.l brea.t ca.cer）. The media. a.e wa. 57.7 yea.s （ra.ge： 26-86 yea.s）. The ma.n clinica. compla.nt wa. a.ma.s benea.h the a.eola.ill 94.5% of the ca.es. most pa.ients ha. a.loca.ly a.va.ced disea.e. 94.5% of tumors were inva.ive duct ca.cinoma.. The trea.ment wa. essentia.ly surgery in 91.8%, followed by a.juva.t ra.iothera.y （in 89.2%）, hormona. thera.y （in 56.7%） a.d chemothera.y （in 91.8%）. Follow-up period ra.ged from 6-115 months. Loca. recurrence occurred in 4 ca.es a.d meta.ta.is in 11 ca.es. The 2-yea. a.d 5-yea. overa.l surviva. （OS） ra.es were 81.6% a.d 60.5%, respectively. The 2-yea. a.d 5-yea. disea.e-free surviva. （DFS） ra.es were 68.4%, a.d 52.6%, respectively. OS wa. not significa.tly a.fected by a.y of the studied pa.a.eters. Fa.tors influencing DFS were： T sta.e （P=0.05）, positive lymph nodes （P=0.043）, meta.ta.is （P=0.004）, a.d chemothera.y （1＇=0.046）. Conclusions mBC is a.ra.e disea.e a.d often dia.nosed a. a.loca.ly a.va.ced sta.e. The ma.a.ement of ma.e a.d fema.e brea.t ca.cinoma.is identica.. Future resea.ch for better understa.ding of this disea.e is needed to improve the ma.a.ement a.d prognosis of ma.e brea.t ca.cer pa.ients.

关键词： brea.t neopla.ms ma.e thera.eutics Egypt

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Physico-a.a.ytica. Studies on Sa.icyla.dehyde Thiosemica.ba.one Complexes

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Journa. of ma.eria.s Science & Technology 1998年第5期14卷 434-440页

作者： abo el Fetoh, S.H. a.d el-Ka.eem, a.T. Wa.sel, m.a. Eid, a.E. Fa.ulty of Girls-a.n Sha.s University Egypt Na.iona. Resea.ch Centre Egypt Fa.ulty of Science El-Menoufia University Egypt Fa.ulty of Science Al-Azhar University Egypt

The complexes of sa.icyla.dehyde thiosemica.ba.one with Pd, Cu a.d Ru were prepa.ed. The prepa.ed complexes were cha.a.terized by spectroscopic, element a.d therma. a.a.yses a.d D.C. conductivity mea.urements. The a.timicrobia. a.tivity of a.l the prepa.ed compounds a.a.nst gra.-positive, gra.-nega.ive a.d fungi wa. studied. From these studies, it ha. been obta.ned tha. the liga.d is bonded to the meta.s through O, N a.d S, but to pa.la.ium in [Pd (H//2L//2)] Cl//2 only through N a.d O. Biologica. studies confirm tha. the orga.ic effect on both gra.-positive a.d gra.-nega.ive ba.teria.is very wea. a.d their complexes ha.e no effect on fungi, but Cu-complex ha. strong influence on both types of ba.teria. (Edited a.thor a.stra.t) 22 Refs.

关键词： meta.lorga.ic polymers

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Tribo-mecha.ica. a.d electrochemica. Properties of Ca.bonitrided 316 a.stenitic Sta.nless Steel by rf Pla.ma.for Biomedica. a.plica.ions

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a.va.ces in ma.eria.s Physics a.d Chemistry 2018年第9期8卷 358-377页

作者： F. m. el-Hossa.y m. Ra.if a. m. a.d el-Ra.ma. m. abo el-kassem Physics Depa.tment Faculty of Science Sohag University Sohag Egypt

a.SI 316 a.stenitic sta.nless steel wa. ca.bonitrided using rf pla.ma.with purpose of using low-cost orthopedic impla.t ma.eria.s in biomedica. a.plica.ions besides the ma.ufa.turing requests. The pla.ma.trea.ment process wa. a.complished a. low working ga. pressure of 0.075 mba. in nitrogen-a.etylene ga.eous mixture. The pla.ma.processing time wa. fixed a. 10 min while the pla.ma.processing power wa. va.ied from 450 to 650 wa.t. The effect of pla.ma.trea.ment power on the structure, tribologica., mecha.ica., electrochemica. a.d biocompa.ibility of a.SI 316 ha. been investiga.ed. The structura. results demonstra.ed the forma.ion of nitrogen a.d ca.bon solid solutions, chromium nitride, iron ca.bide a.d iron nitride pha.es in the trea.ed sa.ples. The microha.dness of the trea.ed la.er increa.es with increa.ing the processing power to rea.h a.ma.imum va.ue of a.proxima.ely 1300 HV0.1 a. 600 W which represents more tha. 6-folds increa.e in microha.dness in compa.ison with the untrea.ed ma.rix. The wea. a.d corrosion resista.ce of the trea.ed a.SI 316 were enha.ced compa.ed to the untrea.ed one. The friction coefficient wa. reduced from nea.ly 0.5 for the untrea.ed substra.e to nea.ly 0.3 for the ca.bonitrided sa.ple. The surfa.e energy a.d wetta.ility of the ca.bonitrided sa.ples were a.gmented a. the pla.ma.processing power increa.ed. Furthermore, the numbers of grown mesenchyma. stem cells a.e higher for ca.bonitrided sa.ples compa.ed to the untrea.ed one. The forma.ion of nitrogen a.d ca.bon solid solution, chromium nitride, iron nitride a.d iron ca.bide ha.d pha.es a.ter ca.bonitriding process is responsible for a.hieving good mecha.ica., tribologica., biocompa.ibility a.d electrochemica. properties for a.SI 316 a.loys.

关键词： Pla.ma.ma.eria. Intera.tions 52.40.Hf Surfa.e Ha.dening 81.65.Lp mecha.ica. Properties 62.20.Qp Surfa.e Energy 68.35.md Biocompa.ibility 87.85.Jj

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Kinetics a.d Na.ostructure Dependence of High Tempera.ure-Low Stress Creep of a. a.d a.-0.3%Fe

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Journa. of ma.eria.s Science & Technology 2012年第1期28卷 27-33页

作者： m.abo-elsoud ma.er.Sci.La.. Physics DepartmentFaculty of ScienceBeni-SuefEgypt Physics Depa.tment College of GirlsAl GunfethaUmm Al Qura UniversityKingdom of Saudi Arabia

The novel na.ostructure of a. a.d a.-Fe were prepa.ed by ba.l milling a.umina.with elementa. Fe. The kinetics a.d na.ostructure dependence of high tempera.ure low stress Newtonia. creep of a. a.d a.-0.3%Fe ha.e been investiga.ed a.d compa.ed with the predica.ions of the Na.a.ro-Herring （N-H） theory of directiona. diffusion. a.simple theory ba.ed on the climb controlled genera.ion of disloca.ions from a.fixed density of sources is developed to expla.n the observed beha.ior. The disloca.ion density increa.es a.d subgra.ns form during the creep. a.so, the presence of precipita.es of Fea.3 reduces the creep ra.e of a. by a.solute fa.ter of 100 a. the sa.e stress a.d tempera.ure, in spite of the fa.t tha. the gra.n size in the a.-0.3%Fe a.loy is sma.ler by a.fa.tor of about 100 nm. The reduction of gra.n size to the na.ometer sca.e improves their mecha.ica. properties. electron diffra.tion methods combined with tra.smission electron microscopy （TEm） a.d sca.ning electron microscopy （SEm） studies a.e a.convenient a.d powerful technique for the cha.a.teriza.ion of the pha.es a.d gra.n structure of the resulting ma.eria.s.

关键词： Ba.l milling Na.ostructure Creep

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Dust a.oustic Solita.y Wa.es in Sa.urn F-ring's Region

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Communica.ions in Theoretica. Physics 2011年第1期55卷 143-150页

作者： E.K.el-Shewy m.I.abo el ma.ty H.G.a.delwa.ed m.a.elmessa.y Theoretica. Physics Group Faculty of ScienceMansoura University ma.hema.ics a.d Physics Depa.tment Fa.ulty of Engineering Mansoura University

Effect of hot a.d cold dust cha.ge on the propa.a.ion of dust-a.oustic wa.es （Da.s） in unma.netized pla.ma.ha.ing electrons, singly cha.ged ions, hot a.d cold dust gra.ns ha. been investiga.ed. The reductive perturba.ion method is employed to reduce the ba.ic set of fluid equa.ions to the Kortewege-de Vries （KdV） equa.ion. a. the critica. hot dusty pla.ma.density Nho, the KdV equa.ion is not a.propria.e for describing the system. Hence, a.set of stretched coordina.es is considered to derive the modified KdV equa.ion. It is found tha. the presence of hot a.d cold dust cha.ge gra.ns not only significa.tly modifies the ba.ic properties of solita.y structure, but a.so cha.ges the pola.ity of the solita.y profiles. In the vicinity of the critica. hot dusty pla.ma.density Nho, neither KdV nor mKdV equa.ion is a.propria.e for describing the Da.s. Therefore, a.further modified KdV （fmKdV） equa.ion is derived, which a.mits both soliton a.d double la.er solutions.

关键词： dust-a.oustic wa.es hot a.d cold dust cha.ge double la.er solutions

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The Impa.t of Inoculum Prepa.a.ion media.on Polluta.t Remova. through Phycoremedia.ion of a.ricultura. Dra.na.e Wa.er by Desmodesmus sp.

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Phyton-Interna.iona. Journa. of Experimenta. Bota.y 2023年第10期92卷 2875-2890页

作者： a.ma. Sa.a. Hoda.Sa.y abo el-Kha.r B.el-Sa.ed Reha. m.el-Ba.bohy Heba.I.moha.ed a.ma. a.in Pla.t Physiology Division Department of Agricultural BotanyFaculty of AgricultureCairo UniversityGizaP.O.Box 12613Egypt a.ga. Biotechnology Unit National Research CentreDokkiGiza12622Egypt Biologica. a.d Geologica. Science Depa.tment Faculty of EducationAin Shams UniversityCairo11341Egypt

Wa.er is the most essentia. na.ura. resource for the future *** production is extensively wa.er-dependent a.d a.significa.t polluter of wa.er ***,this work investiga.ed the effect of two different prepa.a.ion media.Bold’s Ba.a. medium(BBm)a.d Domia.i cheese whey(DCW)]for a.ricultura. dra.na.e wa.er(a.W)*** trea.ments were incuba.ed for 6 *** to the results of bioma.s productivity,specific growth ra.e,photosynthetic pigments,a.d biochemica. composition,Desmodesmus *** grow in dra.na.e wa.er without *** two trea.ments significa.tly reduced the concentra.ion of nitra.e,phospha.e,chemica. oxygen dema.d,a.d sodium in ***,using cheese whey with BBm a. inoculum prepa.a.ion media.enha.ced the lipid a.cumula.ion in the a.ga. bioma.s(25.4%w/w)a.d ga.e the best biodiesel properties a.ong ***,combining remedia.ion of dra.na.e wa.er with microa.ga. ma.s production ca. a.hieve the susta.na.ility of a.riculture.

关键词： Desmodesmus sp. dra.na.e wa.er nutrients recycle photosynthetic pigments phycoremedia.ion wa.er sca.city

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Effectiveness of biofertilizers folia. a.plica.ion on yield a.d qua.ity tra.ts of fla.(Linum usita.issimum L.)

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Oil Crop Science 2024年第2期9卷 91-101页

作者： Sa.ed el Sa.ed a.B.Ba.ry O.a.Nofa. m.a.abo Horish Pla.t Nutrition Depa.tment National Research Centre33 El-Behouth St12622DokkiCairoEgypt Field Crops Depa.tment National Research Centre33 El-Behouth St12622DokkiCairoEgypt

Fla. is considered to be one of the most significa.t dua.-purpose crops for oil a.d fiber production in Egypt a.d *** ha.e a.substa.tia. impa.t on va.ious metabolic processes,including increa.ed photo-synthesis,endogenous hormone levels,ion a.sorption,nucleic a.id synthesis,a.d protein *** fa.tors collectively contribute to the growth a.d development of ***,this study a.ms to investiga.e how three biofertilizers(a.ga. extra.t,CmS a. a.by-product of yea.t,a.d meta.osa.e multi minera.s a. a.ino a.ids)ca. enha.ce both the qua.tity a.d qua.ity of fla. seed yield under sa.dy soil *** field experiments were conducted a. the Experimenta. Sta.ion of Na.iona. Resea.ch Centre in Nuba.ia.District,Behira.Governora.e,Egypt during two sea.ons(2021/2022)using a.ra.domized complete block design(RCBD).The results revea.ed significa.t differences a.ong a.l tested biofertilizers in terms of va.ious cha.a.teristics studied in *** a.plica.ion of a.ga. extra.t a. a.ra.e of 1.50 mL/L resulted in a. increa.e in seed yield(ton/ha.by 26.69%&19.89%,stra. yield(ton/ha.by 8.08%&17.12%,a.d oil yield(kg/ha.by 47.72%&33.69%compa.ed to the control group during both sea.ons *** a.plica.ions of a.ga. extra.t a. a.ra.e of 1.50 mL/L a.ong with CmS a. a.ra.e of 5 m L/L a.d a.ino a.ids a. a.ra.e of 1.50 mL/L demonstra.ed significa.tly higher ma.ronutrient contents(N,P,K),micronutrient contents(Fe,Zn,mn),seed oil content,a.d protein content in fla. seeds during both *** highest va.ues for seed oil content a.d protein content%were obta.ned through folia. a.plica.ion of a.ino a.ids a. a.ra.e of 1.50 mL/*** ca. be concluded tha. folia. spra.s with these bio-fertilizers effectively improved fla. performa.ce by increa.ing seed stra. a.d oil yields,nutrients oil,protein a.d fa.ty a.ids seeds contents.

关键词： Fla. Bio fertilizers Seeds yield Nutrient contents Qua.ity

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