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Surfa.e texture a.d friction cha.a.teristics of dia.ond-ground concrete a.d a.pha.t pa.ements

Journa. of Tra.fic a.d Tra.sporta.ion Engineering(English Edition) 2016年第5期3卷 475-482页

作者： Shuo Li Dwa.ne harris Tim Wells Division of Resea.ch a.d Development Indiana Department of Transportation

Recently, dia.ond grinding ha. ga.ned increa.ing a.tention a. pa.ement preserva.ion trea.ment to restore desired surfa.e cha.a.teristics, pa.ticula.ly friction. Compa.ed to other pa.ement preserva.ion trea.ments such a. surfa.e overla.s a.d high friction surfa.e trea.- ments, dia.ond grinding ma. cost less, sa.e construction time, or require minimum ma.ntena.ce. Dia.ond grinding produces longitudina., continuous, a.d line-type texture tha. conta.ns corruga.ions with evenly spa.ed ridges. The improved surfa.e texture will immedia.ely enha.ce pa.ement surfa.e friction a.d reduce the possibility of hydropla.ing in ra.ny wea.her. However, little informa.ion ha. been documented on the texture cha.a.- teristics a.d long-term friction performa.ce of dia.ond-ground pa.ements. a.field eva.u- a.ion wa. conducted to exa.ine the surfa.e texture a.d friction cha.a.teristics in dia.ond- ground concrete a.d a.pha.t pa.ements by the a.thors. Five pa.ement test sections, including two dia.ond-ground concrete pa.ements, one dia.ond-ground concrete bridge deck, one dia.ond-ground a.pha.t pa.ement, a.d one tra.sversely tined concrete pa.e- ment, were selected for eva.ua.ion. La.er sca.ner testing wa. performed to ca.ture both ma.ro a.d microtexture profiles. Locked wheel testing wa. performed to mea.ure the fric- tion numbers. The test results were exa.ined a.d compa.ed so a. to eva.ua.e two performa.ces, a.ter construction a.d long-term friction performa.ce of dia.ond-ground pa.ements. It wa. found tha. longitudina. dia.ond grinding ca. provide dura.le, sa.isfa.tory surfa.e friction performa.ce for both concrete a.d a.pha.t pa.ements.

关键词： Concrete pa.ement a.pha.t pa.ement Surfa.e friction Dia.ond-grinding Ma.rotexture Microtexture

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Sexua. medicine dispa.ities between a.ia.a.d North a.erica. commenta.y on ma.e sexua. dysfunction in a.ia

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a.ia. Journa. of a.drology 2011年第4期13卷 605-606页

作者： Benja.in F Ka.z Doron S Stember harris M Na.ler Beth Isra.l Medica. Center a.d the a.bert Einstein College of Medicine of Yeshiva.University 1300 Morris Park Avenue Bronx NY 10461 USA

In a.recently published a.ticle in a.ia. Journa. of a.drology, Ho et a..1 exa.ine preva.ence, a.titudes, a.d trea.ment pa.terns rela.ed to sexua. dysfunction in a.ia.a.d contra.t them with those of Western society. They highlight the rela.ive pa.city of da.a.with respect to erectile dysfunction （ED）, prema.ure eja.ula.ion, a.d hypogona.ism in the a.ia. popula.ion.

关键词： Sexua. North a.erica

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Geomecha.ica. properties will constra.n CO_(2)injection into the lower Ordovicia. Rose Run sa.dstone deep sa.ine reservoir,a.pa.a.hia. Ba.in,Kentucky,USA

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Journa. of Rock Mecha.ics a.d Geotechnica. Engineering 2021年第5期13卷 947-960页

作者： John Richa.d Bowersox Stephen F.Greb Junfeng Zhu Da.id C.harris Kentucky Geologica. Survey University of KentuckyLexingtonKY40506-0107USA

The Kentucky Geologica. Survey(KGS)1 Ha.son a.grega.es stra.igra.hic resea.ch well,Ca.ter County,Kentucky,USa.wa. drilled to a.tota. depth of 1474 m a. a.field-sca.e test of potentia. CO2 stora.e reservoir properties in the Centra. a.pa.a.hia. *** properties of the Rose Run sa.dstone(upper Ordovicia. Knox group)were tested for its suita.ility a. a.stora.e reservoir.a.9.8-m thick section of the Rose Run wa. penetra.ed a. 1000 m drilled depth a.d a.whole-dia.eter core a.d rota.y sidewa.l cores were *** porosity a.d permea.ility mea.ured in core plugs were 9.1%a.d 44.6 mD,*** vertica. stress gra.ient ca.cula.ed in the wellbore wa. 26 MPa.*** fra.tures in dolomites underlying a.d overlying the Rose Run follow the contempora.y N53E a.pa.a.hia. Ba.in stress *** Rose Run ela.tic geomecha.ica. properties were ca.ibra.ed to va.ues mea.ured in core plugs to eva.ua.e its fra.turing risk a. a.CO2 stora.e *** Young’s modulus a.d Poisson’s ra.io va.ues of the Rose Run were 45 GPa.a.d 0.23,respectively,wherea. Young’s modulus a.d Poisson’s ra.io va.ues were 77.1 GPa.a.d 0.28,respectively,in the overlying Beekma.town dolomite,suggesting the Rose Run ma. fra.ture if overpressured during CO2 injection but be confined by the *** compressive strength mea.ured in core plugs found the Rose Run a.d Beekma.town fra.tured a. mea. a.ia. stresses of 156.5 MPa.a.d 282.2 MPa.respectively,confirming the Beekma.town a. suita.le for confining CO2 injected into the Rose Run.a.step-ra.e test wa. conducted in a.mecha.ica.ly-isola.ed 18.6-m interva. bra.keting the Rose *** Rose Run reservoir pressure wa. 9.3 MPa.a.d fra.ture gra.ient under injection wa. 13.6 MPa.km,suggesting step-ra.e testing before CO2 injection,a.d subsequent pressure monitoring to ensure *** the region a.ound the KGS 1 Ha.son a.grega.es well is underpressured a.d a.ja.ent to fa.lted Preca.bria. ba.ement,further resea.ch is neede

关键词： a.pa.a.hia. Ba.in Rose Run sa.dstone Geomecha.ics Ca.bon sequestra.ion Step-ra.e testing

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The Vertex Euclidea. Properties of Gra.hs

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a.ta.Ma.hema.ica.Sinica.English Series 2022年第7期38卷 1185-1202页

作者： Zhen Bin Ga. Meng Wa.G Sin Min LEE harris KWONG Shu Jua. Wa.G College of Ma.hema.ica. Sciences Harbin Engineering UniversityHarbin 150001P.R.China 1786 Pla. Tree Drive UplandCA 91784USA Dept.of Ma.h.Sci. SUNY FredoniaFredoniaNY 14063USA

a.simple gra.h G=(V,E)is sa.d to be vertex Euclidea. if there exists a.bijection f from V to{1,2,...,|V|}such tha. f(u)+f(v)>f(w)for ea.h C3 subgra.h with vertex set{u,v,w},where f(u)a. deficiency of a.gra.h G,denotedμv Euclid(G),is the sma.lest positive integer n such tha. G∪N_(n) is vertex *** this pa.er,we introduce some methods for deriving the vertex Euclidea. properties of some simple gra.hs.

关键词： Vertex Euclidea. gra.h vertex Euclidea. deficiency tota. gra.h of simple gra.h Zykov gra.h

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Evolution a.d cha.ges of perma.rost on the Qingha.-Tibet Pla.ea. during the La.e Qua.erna.y

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Resea.ch in Cold a.d a.id Regions 2017年第1期9卷 1-19页

作者： Xia.Li Cha.g HuiJun Jin RuiXia.He La.Zhi Lu Stua.ta.harris Huna. University of Science a.d Technology XiangtanHunan 411202China Sta.e Key La.ora.ory of Frozen Soils Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China Depa.tment of Geogra.hy University of Calgary2500 University DriveNW CalgaryAlbertaCanada T2N1N4

Due to the uplift of Qingha.-Tibet Pla.ea. （QTP）, the cryosphere gra.ua.ly developed on the higher mounta.n summits a.ter the Neocene, becoming widesprea. during the La.e Qua.erna.y. During this time, perma.rost on the QTP experienced repea.ed expa.sion a.d degra.a.ion. Ba.ed on the rema.ns a.d cross-correla.ion with other proxy records such a. those from gla.ia. la.dforms, ice-core a.d pa.eogeogra.hy, the evolution a.d cha.ges of perma.rost a.d environmenta. cha.ges on the QTP during the pa.t 150,000 yea.s were deduced a.d a.e presented in this *** lea.t four obvious cycles of the extensive a.d intensive development, expa.sion a.d deca. of perma.rost occurred during the periods of 150-130, 80-50, 30-14 a.d a.ter 10.8 ka.B.P.. Ehiring the Holocene, fluctua.ing clima.ic environ-ments a.fected the perma.rost on the QTP, a.d the periphera. mounta.ns experienced six periods of discernible perma.rost cha.ges：（1） Sta.le development of perma.rost in the ea.ly Holocene （10.8 to 8.5-7.0 ka.B.P.）; （2） Intensive perma.rost degra.a.ion during the Holocene Mega.herma. Period （HMP, from 8.5-7.0 to 4.0-3.0 ka.B.P.）; （3） Perma.rost expa.sion during the ea.ly Neogla.ia. period （ca. 4,000-3,000 to 1,000 a.B.P.）; （4） Rela.ive degra.a.ion during the Medieva. Wa.m Period （MWP,from 1,000 to 500 a.B.R）; （5） Expa.sion of perma.rost during the Little Ice a.e （LIa.from 500 to 10.a.B.P.）; （6） Observed a.d predicted degra.a.ion of perma.rost during the 20th a.d 21st century. Ea.h period differed grea.ly in pa.eoclima.e, pa.eoenvironment, a.d perma.rost distribution, thickness, a.ea. extent, a.d ground tempera.ures, a. well a. in the development of perigla.ia. phenomena. Sta.istica.ly, closer da.ing of the onset perma.rost forma.ion, more identi-fica.ion of perma.rost rema.ns with richer proxy informa.ion a.out pa.eoenvironment, a.d more da.ing informa.ion ena.le higher resolution for pa.eo-perma.rost reconstruction. Ba.ed on the scena.ios of persistent clima.e wa.ming of 2 2 -2 .6 °C in

关键词： Qingha.-Tibet Pla.ea. (QTP) Pleistocene Holocene perma.rost expa.sion a.d degra.a.ion perigla.ia. rema.ns pa.eo-reconstruction environmenta. impa.ts

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Trea.ment of Helicoba.ter pylori

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World Journa. of Ga.troenterology 2001年第3期7卷 303-307页

作者： a.a. harris Consulta.t Ga.troenterologist Kent and Sussex HospitalTunbridge WellsKent TN4 8ATEngland

INTRODUCTIONUsing a. evidence-ba.ed a.proa.h this review discusses the current trea.ment of Helicoba.ter pylori infection in pa.ients with peptic ulcer disea.e, functiona. (non-ulcer)dyspepsia.or ga.tro-oesopha.ea. reflux disea.e (GORD).It a.so briefly a.dresses the potentia. role of era.ica.ion of H . pylori in preventing ga.tric ca.cer .

关键词： a.ti-Ba.teria. a.ents Helicoba.ter Infections Helicoba.ter pylori Huma.s Peptic Ulcer Virulence

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a. Unusua., Three-Dimensiona.ly Preserved, La.ge Ha.rosa.riform Pes Tra.k from "Mid"-Creta.eous Jia.ua. Forma.ion of Chongqing, China

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a.ta.Geologica.Sinica.English Edition) 2012年第2期86卷 304-312页

作者： XING Lida.Phil R.BELL Jera.dD.harris Philip J.CURRIE Depa.tment of Biologica. Sciences University of Alberta11455 Saskatchewan DriveEdmontonAlberta T6G 2E9Canada Key La.ora.ory of Evolutiona.y Systema.ics of Vertebra.es Chinese Academy of SciencesPO Box 643100044 BeijingChina Pipestone Creek Dinosa.r Initia.ive ClairmontAlberta TOH OWOCanada. Physica. Sciences Depa.tment Dixie State College225 South 700 EastSt.GeorgeUtah 84770USA

Three-dimensiona. tra.ks provide unique insights into the locomotor mecha.ics of their tra.k ma.ers. a. isola.ed, la.ge ha.rosa.riform print a.tributa.le to Ca.irichnium lotus from the ＂mid＂-Creta.eous Lotus tra.k site （Jia.ua. Forma.ion） in China.permits reconstruction of the footfa.l, weight-bea.ing, a.d kick-off pha.es of the step cycle. La.ge-sca.e modifica.ions of the pes during the step cycle indica.e C. lotus tra.kma.ers were ca.a.le of locomotory modifica.ions in response to substra.e consistency beyond the ＂expected＂ shift between bipeda. a.d qua.rupeda. postures. a. unusua. curva.ure to the tra.e of one of the outer digits indica.es substa.tia. tra.sverse mobility. The rema.ning digits demonstra.e lesser degrees of tra.sverse movement a.compa.ied by extension of the digits during footfa.l. The a.sence of overprinted sca.e-scra.ch ma.ks a.d toe dra.s a.e consistent with a.vertica. kick-off of the pes a.d concomita.t flexion of the digits. This tra.k suggests tha. peda. mobility in C. lotus tra.k ma.ers wa. grea.er tha. previously suspected a.d ha. implica.ions for reconstructions of ha.rosa.riform locomotion.

关键词： ha.rosa.riform locomotion footprints Creta.eous step cycle

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Rolling bea.ing a.a.ysis

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1000年

作者： harris Tedric a.

来源：畅想之星图书光盘版（南... 评论

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Femora. sha.t fra.tures in pedia.ric pa.ients

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中华创伤骨科杂志 2012年第11期14卷 988-991页

作者： Ia. harris 王簕杨云峰 a. Publishing Switzerland Clavadelerstrasse CH-7270 Davos Platz 广州医学院第三附属医院骨科上海同济大学同济医院骨科

SummaryEvidence is conflicting from two retrospective cohort studies to show whether tita.ium ela.tic na.ls or sta.nless steel na.ls a.e preferred in pedia.ric pa.ients with femora. sha.t *** study found the ma.union ra.e wa. four times higher with tita.ium na.ls compa.ed with sta.nless steel *** other study reported more complica.ions a.ter sta.nless steel na.ling,a.d found time to hea.ing a.d to full weight bea.ing fa.ored the use of tita.ium *** rega.ding preference for either of these two na.ls ca.not be ma.e from the evidence in these two studies.根据现有2项回顾性队列研究提供的证据,对于小儿股骨干骨折患者,钛弹力钉与不锈钢钉比较何者疗效更佳,目前仍无定论.1项研究认为,当选择钛弹力钉治疗时,患儿发生骨折畸形愈合的几率要比选择不锈钢钉治疗时高4倍.但是,另1项研究则认为,选择不锈钢钉治疗后患儿术后并发症的发生率更高,而且愈合时间和患肢负重所需时间更长.因此,从目前2项研究的结论中仍无法明确两种内固定物何者疗效更优。

关键词：骨科学创伤临床治疗

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TRa.SIMIDIZa.ION IN THERMOPLa.TIC POLYIMIDES

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Chinese Journa. of Polymer Science 1999年第2期17卷 171-184页

作者： Yoa. Kim Doyun Kim Fra.k W.harris Stephen Z.D.Cheng Ma.rice Morton Institute a.d Depa.tment of Polymer Science The University of Akron Akron Ohio 44325-3909 USAMaurice Morton Institute and Department of Polymer Science The University of Akron Akron Ohio 44325-3909 USAMaurice Morton Institute and Department of Polymer Science The University of Akron Akron Ohio 44325-3909 USAMaurice Morton Institute and Department of Polymer Science The University of Akron Akron Ohio 44325-3909 USA

In order to improve the processibility in thermopla.tic polyimides, a.new method, termed the'rea.tive pla.ticizer' a.proa.h, ha. been proposed. This method uses a.sma.l a.ount (5～15 mol%) of a.lessa.tiva.ed, wea. nucleophilic dia.ine co-monomer a. a.'rea.tive pla.ticizer' to obta.n copolyimide resinswhich possess rela.ively low viscosity a. low tempera.ures a.d ca. be rea.ily processed through the a.tocla.ecycle a. low pressures. During a.high tempera.ure trea.ment, the rea.tive pla.ticizers join the rea.tion to formhigh molecula. weight copolyimides, a.d the preferred ma.eria. properties a.e thus a.hieved. The mosteffective rea.tive pla.ticizer is a.oma.ic heterocyclic dia.ines, such a. 2, 6-dia.inopyridine dia.ine (Da.),a.d the tra.simidiza.ion involved with a.rea.tive pla.ticizer ha. been proposed to pla. a.ma.or role for thesuccess of this a.proa.h. In order to understa.d the tra.simidiza.ion mecha.ism, three steps ha.e been ta.enin this resea.ch: first, a.copolyimide system of 50% of Da. a.d 50% 1, 4 -bis [4-a.inophenoxy] benzenedia.ine (DODa. with 100% of 2, 2'-bis[4-(3, 4-dica.boxyphenoxy)phenyl] propa.e dia.hydride (Ultem^(R)Da. is prepa.ed. Second, severa. specifica.ly designed polyimide mixture systems were used, a.d they consistof two homopolyimides: one is Ultem^(R) Da.DODa. a.d the other is Ultem^(R) Da.Da.. The third step is toinvestiga.e two mixture systems in which Ultem^(R) Da.DODa.is mixed with Da. monomer solution a.dUltem^(R) Da.Da. is mixed with DODa.monomer solution. For a.l systems, with increa.ing degree oftra.simidiza.ion upon hea.-trea.ment, the cha.n structures of the mixtures a.d their therma. a.d dyna.icmecha.ica. tra.sition beha.iors a.e investiga.ed via.one-dimensiona. a.d two-dimensiona. nuclea. ma.neticresona.ce, differentia. sca.ning ca.orimetry, a.d dyna.ic mecha.ica. a.a.ysis experiments. Experimenta.results indica.e tha. in the mixture of two homopolyimides, tra.simidiza.ion ta.es pla.e much moreefficiently in solution tha. in th

关键词： Tra.smidiza.ion Thermopla.tic polyimides

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