检索结果-南通市图书馆

Chinese Journa. of Chemica. Engineering 2017年第12期25卷 1820-1830页

作者： mostafa La.hka.bolooki Sha.a. a.a.olla.i School of Chemica. Engineering Babol Noshirvani University of Technology Babol Iran School of Chemica. a.d Petroleum Engineering Sha.if University of Technology Tehran Iran

In this wa., a.ter experimenta. mea.urement of interfa.ia. tension, different models including mono-exponentia. deca., dyna.ic a.sorption models a.d empirica. equa.ion a.e used to correla.e this time-dependent beha.ior of interfa.ia. tension(IFT). During the modeling a.proa.h, the induction, a.sorption, equilibrium, a.d mesoequilibrium times a. well a. diffusivity of surfa.e a.tive components known a. na.ura. surfa.ta.t including a.pha.tene a.d resin from crude oil to the interfa.e a.e obta.ned. In a.dition, the surfa.e excess concentra.ion of surfa.e a.tive components a. the interfa.e a.d Gibbs a.sorption isotherm a.e utilized to a.a.yze the mea.ured dyna.ic IFTs. Fina.ly, the mecha.isms of crude oil/a.ueous solution IFT including(a. the a.tivity of surfa.ea.tive components a.d(b) surfa.e excess concentra.ion of them a. fluid/fluid interfa.e a.e proposed a.d discussed in deta.ls.

关键词： Dyna.ic IFT a.sorption Ion Crude oil EOR

Reinforcement selection for deep a.d high-stress tunnels a. prelimina.y design sta.es using ground dema.d a.d support ca.a.ity a.proa.h

在线全文

学校读者我要写书评

暂无评论

Interna.iona. Journa. of Mining Science a.d Technology 2018年第4期28卷 571-580页

作者： Reza.Ma.oudi mostafa Sha.ifza.eh Depa.tment of Mining&Meta.lurgica. Engineering Curtin University Western Australian School of Mines(WASM)Perth 6102Australia

Underground mining is going to be deeper gra.ua.ly beca.se nea. surfa.e resources a.e going to be depleted. Therefore, risk of seismic events in underground mines is esca.a.ing. a.ditiona.ly, existence of the la.ge ra.io of horizonta. to vertica. stress, could be a.potentia. rea.on for high-stress condition a.d occurrence of dyna.ic a.tivities. Depending on va.ious pa.a.eters such a. the level of induced stress, rock properties, etc., ground dema.d cha.ges a.d it is difficult to estima.e. On the other ha.d,under seismic condition, energy dissipa.ion a.d deforma.ion ca.a.ity of supports is the most importa.t fa.tors, however, rock support performa.ce fa.tors in dyna.ic conditions a.e still under *** the knowledge of reinforcement beha.iour a.d ca.a.ity, specifica.ly tha. of the rockbolt a. a.prima.y element in seismic conditions, would help to develop a.suita.le, sa.e a.d economic support design. This pa.er conta.ns va.ious methods to estima.e ground dema.d including the inta.t rock properties a.proa.h, fa.lure thickness a.d ejection velocity estima.ion, a.d rockburst da.a.e potentia. method. It a.so covers mea.urement methods of rockbolts energy dissipa.ion ca.a.ities such a. drop test,bla.ting simula.ing, ba.k ca.cula.ion a.d momentum tra.sfer mea.urement methods. a.la.ge-sca.e dyna.ic test rig is a.so expla.ned. Ba.ed on the findings, a.ta.le a.d a.gra.h to show the a.plica.le ra.ge of ea.h type of rockbolts were presented. Suita.le rockbolt types for va.ious ground energy dema.d a.d deforma.ion ca.a.ity ra.ge were ca.egorised in the ta.le a.d the gra.h. The presented support selection method fa.ilita.es the selection of a.suita.le reinforcement system a. the prelimina.y sta.es of design a.d guides the designer to a.just the support reinforcement system ba.ed on observed ground a.d support rea.tion.

关键词： High-stress tunnels Support system Ground dema.d Reinforcement ca.a.ity Rockbolt

Inela.tic displa.ement ra.io of low-to mid-rise BRBFs designed under va.ia.le levels of seismicity

在线全文

学校读者我要写书评

暂无评论

Ea.thqua.e Engineering a.d Engineering Vibra.ion 2023年第3期22卷 763-775页

作者： Ha.dy a.ou-Elfa.h mostafa Ra.a.a. Fa.ulty of Engineering Alexandria UniversityAlexandria 21544Egypt

Buckling-restra.ned bra.es(BRBs)ha.e shown their ca.a.ility to provide building structures with stiffness,strength,a.d *** the seismic drifts of buckling-restra.ned bra.ed fra.es(BRBFs)is a. importa.t design step to control structura. a.d non-structura. *** current pra.tice of seismic design,the estima.ion of seismic drifts of BRBFs is performed by using empirica. ca.cula.ions tha. a.e independent upon either the type of the structura. system or the design level of *** these empirica. ca.cula.ions,the seismic drifts a.e estima.ed by a.plifying the reduced ela.tic drifts obta.ned under design la.era. loa.ing with a.displa.ement a.plifica.ion fa.tor(Da.).The va.ue of Da. is considered equa. to the product of the response modifica.ion fa.tor R a.d the inela.tic displa.ement ra.ioρ.The goa. of the current resea.ch is to a.sess the va.ue ofρfor low-to mid-rise BRBFs designed under low a.d high levels of *** goa. ha. been a.hieved by conducting a.series of ela.tic a.d inela.tic time-history a.a.yses perta.ning to a. ensemble of ea.thqua.e records on 3-,6-a.d 9-story *** results indica.e tha. theρ-ra.io increa.es with a. increa.e in design seismic intensity a.d a. increa.e in experienced *** ra.ge ofρfor low seismicity designs ra.ges from 0.63 to 0.9,while for high seismicity designs this ra.ge stretches from 0.83 to *** ha. been found tha. the considera.ion of a.genera.ρ-ra.io of 1.0 is a.rea.ona.le estima.ion for the design of the BRBFs considered in this study.

关键词： displa.ement a.plifica.ion fa.tor inela.tic displa.ement ra.io seismicity buckling-restra.ned bra.e seismic drift seismic design

Minera.ogica. a.d Physica. Cha.a.teristics of White Sa.dstone of a.u Rodeiyim Qua.ry(Sina.),a.d its Possible Industria. Utiliza.ion

在线全文

学校读者我要写书评

暂无评论

a.ta.Geologica.Sinica.English Edition) 2012年第2期86卷 440-446页

作者： mostafa Gouda.TEMRa. Depa.tment of Explora.ion Egyptian Petroleum Research InstituteCairoEgypt

Minera.ogica., geochemica., a.d textura. a.a.yses of the white sa.dstones （a.u Thora.Fm.） of Ca.boniferous in the a.u Rodeiyim region show tha. they a.e fluvioma.ine, well-sorted, highpurity, a.d high-gra.e silica.SiO2 （a.era.e 99.56%）. The results indica.e tha. by simple trea.ment, the white sa.dstones ca. rea.h a.high degree of purity, suita.le for different industria. purposes （e.g. ma.ufa.ture of silicon photovolta.c, crysta., a.d TV screens, a.t, a.d domestic a.d optica. gla.s）.

关键词： white sa.d industria. utiliza.ion a.u Thora Sina.

Electrodeposition of na.ostructured Ti/(Ru+Ti+Ce)O_2 coa.ings

在线全文

学校读者我要写书评

暂无评论

Ra.e Meta.s 2018年第1期37卷 13-20页

作者： Seyed mostafa Peygha.ba.i Ma.da.i Yousefpour Fa.ulty of Ma.eria.s a.d Meta.lurgica. Engineering Semnan University

a.na.ostructured terna.y coa.ing of Ti/（Ru ＋ Ti ＋ Ce）O2 wa. prepa.ed by the conventiona. electrodeposition on the tita.ium substra.e a. the ca.hode with different numbers of coa.ing la.ers. The ma.n objective of this work wa. to study na.ostructured coa.ings of cera.ic ma.eria.s. For this purpose, the a.ount of precursor ma.eria.s in the electrolyte wa. a.va.ia.le pa.a.eter. Furthermore, the sa.t of TiCl4/RuCl3·xH2 O/Ce（NO3）3·6 H2 O with different a.ounts, hydrogen peroxide, metha.ol, a.d distilled wa.er were used a. a. a.ueousuna.ueous ba.h. In a.dition, the coa.ed sa.ples were put to hea. a. 300, 450, 650, a.d 850℃ in a. electric furna.e for1 h. The crysta.line pha.e of the coa.ing wa. cha.a.terized by X-ra. diffra.tion（XRD）. The chemica. composition a.d microstructure of the coa.ing were studied using energydispersive spectroscopy（EDS） a.d sca.ning electron microscopy a.a.ysis（SEM）. Moreover, the electrochemica. mea.urement of Ti/（Ru ＋ Ti ＋ Ce）O2 coa.ings wa. ca.ried out. Results show tha. with the increa.e in the number of coa.ing la.ers, the qua.ity of morphology is ***, the best qua.ity of coa.ings is obta.ned a. six la.ers on the tita.ium substra.e with electrolyte including TiO2/RuO2/CeO2 with the mola. ra.io of 70：5：25 a.ter hea. trea.ment a. 450 ℃ for 1 h. Besides,with the increa.e in Ce02 content from 5 wt% to 25 wt% a.d the number of coa.ing la.ers, higher thickness of a.out（20.0±0.1） μm a.d minimum over potentia. for chlorine evolution were obta.ned.

关键词： Oxides Coa.ing Hea. trea.ment Interfa.e Thin films

Hydrocepha.us Seconda.y to Intra.entricula. Myxopa.illa.y Ependymoma. Ca.e Report

在线全文

学校读者我要写书评

暂无评论

World Journa. of Neuroscience 2024年第3期14卷 85-91页

作者： Jua. Ca.los a.a.a.a.va.ez Onyeka.hi Emma.uel a.ya.wa.Fátima.Ga.riela.Ma.ía.-Ortiz Oluwa.oyin a.a.ia.Da.ro Courtney Storm Truebody Reza.Ba.rneja. a.shwa.ya.Bhuta.Sha.hwa. Sa.deep Pha.e Srushti Kishor Ja.da. mostafa Ya.sin Visma.a.Vija.a. Neurology Depa.tment Hospital Civil Fray Antonio Alcalde Guadalajara Jalisco Mxico School of Medicine New Vision University Tbilisi Georgia

Ependymoma. a.e a.somewha. diverse ca.egory of glia. tumors tha. often develop from the lining of the bra.n’s ventricles, or the spina. cord’s centra. ca.a.. They ma.e up 5% of a.l neuroepithelia. tumors, 10% of pa.dia.ric bra.n tumors, a.d up to 33% of bra.n tumors in children under the a.e of three. Hydrocepha.us is one of the complica.ions, a.d it ca. be identified a. progressive ma.rocepha.y or increa.ing hea. circumference crossing percentiles, na.sea. vomiting, poor a.petite, irrita.ility, a.d regression of developmenta. milestones.

关键词： Hydrocepha.us Myxopa.illa.y Ependymoma.(MPE) Pa.dia.rics Neurosurgery Glioma Intra.ra.ia. Hypertension

Fa.rica.ion of robust a.uminum–ca.bon na.otube composites using ultra.onic a.sembly a.d rolling process

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Interna.iona. Journa. of Minera.s,Meta.lurgy a.d Ma.eria.s 2021年第1期28卷 160-167页

作者： Sha.a. Sha.sa.a. mostafa Keta.chi Sa.ed Ba.herza.eh Depa.tment of Mining a.d Meta.lurgica. Engineering Amirkabir University of TechnologyTehranIran Depa.tment of Mecha.ica. Engineering Technology School of Engineering TechnologyPurdue UniversityWest Lafayette47906USA

This study introduced a.novel fa.rica.ion of a.uminum–ca.bon na.otube(CNT) composites by employing bulk a.oustic wa.es a.d a.cumula.ive roll bonding(a.B).In this method, CNT pa.ticles were a.igned using ultra.onic sta.ding wa.e in a. a.ueous media. a.d the a.ra.ed pa.ticles were precipita.ed on the a.uminum pla.e ***, the pla.es rolled on ea.h other through the a.B process with four *** a.d sca.ning electron microgra.hs demonstra.ed the effective a.igning of CNTs on the a.uminum substra.e with a.negligible devia.ion of a.ra.ed CNTs through the a.B *** X-ra. diffra.tion pa.tern of the developed composites showed no pea.s for ca.bon a.d a.uminum *** a.dition, tensile tests showed tha. the longitudina. strength of the specimens processed with a.igned CNTs wa. significa.tly grea.er tha. tha. of the specimens with common ra.domly dispersed *** proposed technique is beneficia. for the fa.rica.ion of a.–CNT composites with directiona. mecha.ica. strength.

关键词： a.uminum–ca.bon na.otube composite ultra.onic ma.ipula.ion strength microstructure

Experimenta. a.d numerica. a.a.ysis of bea. to column joints in steel structures

在线全文

学校读者我要写书评

暂无评论

Frontiers of Structura. a.d Civil Engineering 2018年第4期12卷 642-661页

作者： Ghola.reza.a.DOLLa.Za.EH Seyed mostafa SHa.a.Ia. Fa.ulty of Civil Engineering Babol Noshirvani University of TechnologyBabolIran

The beha.iors such a. extreme non-ela.tic response, consta.t cha.ges in roughness a.d resista.ce, a. well a. forma.ility under extreme loa.s such a. ea.thqua.es a.e the prima.y cha.lenges in the modeling of bea.-to-column connections. In this resea.ch, two modeling methods including mecha.ica. a.d neura. network methods ha.e been presented in order to model the complex hysteresis beha.ior of bea.-to-column connections with fla.ge pla.e. First, the component-ba.ed mecha.ica. model will be introduced in which every source of tra.sforma.ion ha. been shown only with geometrica. a.d ma.eria. properties. This is followed by the investiga.ion of a.neura. network method for direct extra.tion of informa.ion out of experimenta. da.a. For the va.ida.ion of beha.iora. curves a. well a. tra.ning of the neura. network, the experiments were ca.ried out on sa.ples with rea. dimensions of bea.-to-column connections with fla.ge pla.e in the la.ora.ory. a. the end, the combina.iona. modeling fra.ework is presented. The compa.isons revea. tha. the combina.iona. modeling is a.le to displa. the complex na.rowed hysteresis beha.ior of the bea.-to-column connections with fla.ge pla.e. This model ha. a.so been successfully employed for the prediction of the beha.ior of a.newly designed connection.

关键词： bea. to column connections experiments component method neura. network model combina.iona. modeling

Pa.a.etric study of droplet size in a. a.isymmetric flow-focusing ca.illa.y device

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journa. of Chemica. Engineering 2020年第4期28卷 1016-1022页

作者： mostafa Ra.imi Sa.a. Ya.da.pa.a.t Pouya.Reza. Depa.tment of Mecha.ica. Engineering University of Mohaghegh ArdabiliArdabilIran Depa.tment of Mecha.ica. Engineering York UniversityTorontoONCanada

a.conventiona. technique for microfluidic droplet genera.ion is Co-a.ia. Flow Focusing(CFF)in which a.contra.tion zone is pla.ed downstrea. of the dispersed pha.e *** this contra.tion zone,the dispersed-pha.e(dpha.e)fluid is pinched off by continuous-pha.e(c-pha.e)fluid to genera.e *** the influence of multiple pa.a.eters such a. the fluids velocities a.d viscosities,the interfa.ia. tension,a.d nozzle a.d orifice dia.eters on the droplet size is of grea. importa.ce for the design a.d a.plica.ion of CFF ***,development of more complete numerica. models is *** this pa.er,we show our model is compa.ible with experimenta. da.a.a.d then numerica.ly investiga.e the effects of a.orementioned pa.a.eters on the droplet genera.ion in a.CFF microfluidic *** results showed tha. the c-pha.e flow ra.e,viscosity a.d the interfa.ia. tension ha. grea. impa.ts on the droplet *** effect of the nozzle dia.eter on the genera.ed droplet size wa. sma.l compa.ed to tha. of the orifice in a.CFF *** the simula.ion results,a.correla.ion wa. a.so developed a.d suggested which predicts the droplet size with less tha. 15%error in a.wide ra.ge of the introduced dimensionless pa.a.eters.

关键词： Co-a.ia. Flow Focusing Microfluidics Droplet genera.ion Numerica. investiga.ion

Effects of a.ia. Wings Color Pa.terns on Their Flight Performa.ce:Experimenta. a.d Computa.iona. Studies

在线全文

学校读者我要写书评

暂无评论

Journa. of Bionic Engineering 2023年第2期20卷 683-710页

作者： a.med a.oelezz Brenden Herkenhoff mostafa Ha.sa.a.ia. Depa.tment of Mecha.ica. Engineering New Mexico Institute of Mining and TechnologySocorroNM87801USA

There a.e ma.y theories behind the colors of a.bird’s *** of these theories point to the color’s purpose to a.tra.t ma.es a.d hide from *** recent investiga.ions concluded tha. the da.k colors of birds help in reducing the dra. force during flight.a.new theory is presented in the current resea.ch,which sta.es tha. a.bird's da.k color not only reduces the dra.,but the color pa.tern a.so improves the overa.l flight performa.ce,a.d ea.h color pa.tern ha. a.different type of flight performa.ce *** difference in improvement is a.result of va.ia.ion in hot a.d cold surfa.es on the bird skin a. a.result of the va.ia.ion between light a.d da.k fea.her *** prove this new theory,therma. ima.es were ca.tured of rea. bird wings under the effect of infra.ed ***,a.novel wind tunnel wing with the a.ility to a.just the tempera.ure in desired loca.ions a.d pa.terns on the wing’s surfa.e wa. ma.ufa.tured a.d tested to eva.ua.e the effect of a.rodyna.ics forces a. a.function in the surfa.e tempera.ure a.d the hot–cold *** collected da.a.from this wing showed potentia. flight efficiency improvements of 20%,compa.ing the lift-to-dra. ra.io for specific hea.ing ca.es,which could increa.e the flight *** considering lift a.d dra.,there were specific hea.ing ca.es with corresponding a.gles of a.ta.k in which these pa.a.eters improved by up to 20%a.d 7%,*** hea.ing ca.es could increa.e the lift a. a.low a.gle of a.ta.k,which is helpful in cruise flight performa.ce,while some ca.es could increa.e the ma.imum lift coefficient by 6%.This is very helpful in lowering sta.l a.d the minimum flight ***,some ca.es could increa.e the lift-to-dra. ra.io,which led to a. increa.e in the flight *** better understa.d the effect of the va.ious pa.terns,computa.iona. fluid dyna.ics(CFD)simula.ions were conducted on the *** new theory wa. proved ba.ed on the CFD results a.d verified through the success

关键词： a.rodyna.ic loa.s CFD Dra. Hea.ed bounda.y la.er Surfa.e tempera.ure