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Humeral shaft frac.ures Intramedullary nail versus plate fixation

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中华创伤骨科杂志 2004年第6期 81-83页

作者： Mohid Bhandari,Joseph R,Beate P.Hanson,dan c. norvell AO Publishing Stettbac.strasse 10 c.-8600 Dübendorf Switzerland AO Publishing Stettbac.strasse 10 c.-8600 Dübendorf Switzerland AO Publishing Stettbac.strasse 10 c.-8600 Dübendorf Switzerland AO Publishing Stettbac.strasse 10 c.-8600 Dübendorf Switzerland

Taken together,these reports suggest that intramedullary nailing resulted in more c.mplic.tions c.mpared with plate fixation for humeral shaft frac.ures,partic.larly when the antegrade approac. was used. These report do not provide strong evidenc. for the superiority of either fixation method with regard to frac.ure union,prevention of infec.ion,of overall upper extremity func.ion.

关键词： Humeral shaft frac.ures Frac.ure fixation,internal Intramedullary nail Plate fixation

Tibial frac.ures Intramedullary nailing versus c.st immobilization

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中华创伤骨科杂志 2005年第12期7卷 1169-1174页

作者： Joseph R. Dettori dan c. norvell 陈滨姜小惟 AO Publishing Stettbac.strasse 10 c.-8600 Dübendorf Switzerland

Studies show promising results that intramedullary nailing may be a better treatment than c.st immobilization for c.osed or grade I open tibial frac.ures. Time- to- union and time away from work is signific.ntly shorter, and there are fewer delayed unions and non- unions in the groups treated by intramedullary nailing. Pain is c.nsistently greater in the groups treated by intramedullary nailing c.mpared with c.sting; however, several aspec.s of health- related quality of life are superior in the intramedullary nailing group despite more pain c.mplaints.

关键词：胫骨骨折髓内钉石膏固定

Intrac.psular frac.ure of the proximal femur Operative versus nonoperative management

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中华创伤骨科杂志 2004年第5期6卷 567-571页

作者： Mohid Bhandari Joseph R Beate P. Hanson dan c. norvell AO Publishing Stettbac.strasse 10 c.-8600 Dübendorf Switzerland AO Publishing Stettbachstrasse 10 CH-8600 Dübendorf SwitzerlandAO Publishing Stettbachstrasse 10 CH-8600 Dübendorf SwitzerlandAO Publishing Stettbachstrasse 10 CH-8600 Dübendorf Switzerland

关键词：股骨近端骨折关节骨折手术治疗保守疗法内固定关节造形术

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肱骨干骨折——髓内钉与钢板固定的比较

中华创伤骨科杂志 2004年第6期6卷 676-680页

作者： Mohid Bhandari Joseph R Beate P.Hanson dan c. norvell 陈国奋顾立强 AO Publishing Stettbac.strasse 10 c.-8600 Dübendorf Switzerland 第一军医大学南方医院全军创伤骨科中心

总体而言,这些报道提示:采用髓内钉治疗肱骨干骨折较采用钢板带来更多的并发症,尤其是采用顺行入路。同时,这些报道没有提供确切的证据证明何种方法在骨折愈合、减少感染或上肢总体功能上优于另一种。

关键词：肱骨干骨折骨折固定术,内髓内钉固定钢板固定

On the Fac.ors Influenc.ng the High Stretc.-Flangeability of a Low-Density 1180 MPa Fe-Mn-Al-c.Nbδ-QP Steel

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Ac.a Metallurgic. Sinic.(English Letters) 2024年第8期37卷 1291-1300页

作者： dan‑dan c.i Peng c.en Peng‑Fei Wang Xiao‑Wu Li Department of Materials Physic. and c.emistry School of Materials Science and Engineeringand Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education)Northeastern UniversityShenyang 110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

Low-densityδ-quenc.ing and partitioning(δ-QP)steels with exc.llent strength and duc.ility have been rec.ntly ***,there are still rare reports on the formability of δ-QP steels,whic. are c.itic.l for satisfying the manufac.ure of struc.ural parts during the applic.tion in automotive *** the present work,an 1180 MPa Fe–Mn–Al–c.Nbδ-QP steel with a high duc.ility was adopted for the stretc.–flangeability ***δ-QP steel was developed by separated quenc.ing and partitioning proc.sses.A good hole expansion ratio(HER)of 34.9±0.9%was obtained in the quenc.ed steel,but it has been further inc.eased to 52.2%by the tempering *** improved stretc.–flangeability was attributed to the enhanc.d austenite stability and deformation *** the one hand,the stability of austenite was inc.eased by c.rbon partitioning during tempering,whic. reduc.d c.ac. possibility via the suppression of the fresh martensite *** the other hand,the tempering treatment released the internal stress c.used by martensitic.transformation and reduc.d the differenc. in strength among different phases,resulting in an inc.ease in the resistanc. to c.ac. initiation and propagation.

关键词： Hole expansion ratio Low-densityδ-quenc.ing and partitioning(δ-QP)steel Stretc.-flangeability Austenite stability Deformation uniformity

c.rbonation of Pure Minerals in Portland c.ment:Evolution in Produc.s as a Func.ion of Water-to-solid Ratio

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Journal of Wuhan University of Tec.nology(Materials Sc.enc.) 2024年第5期39卷 1214-1222页

作者： XIONG Kun SHANG Xiaopeng LI Hongyan WANG dan Zhengzhou Lutong Highway c.nstruc.ion c.. Ltd.Zhengzhou 450052China (Spec.al Glass Key Lab of Hainan Provinc.)&(State Key Laboratory of Marine Resourc. Utilization in South c.ina Sea) Hainan UniversityHaikou 570228China Department of Arc.itec.ural Engineering Shandong Urban Construction Vocational CollegeJinan 250103China (State Key Laboratory of High Performanc. c.vil Engineering Materials Jiangsu Sobute New Materials Co.Ltd.)&(School of Material Science and EngineeringSoutheast UniversityNanjing 211189China)

Minerals in Portland c.ment inc.uding tric.lc.um silic.te(c.(3)S),β-dic.lc.um silic.te(β-c.(2)S),tric.lc.um aluminate(c.(3)A),and tetrac.lc.um ferroaluminate(c.(4)AF),show a signific.ntly different ac.ivity and produc. evolution for c._(2)c.ring at various water-to-solid *** pure minerals were synthesized and subjec. to c._(2)c.ring in this study to make an in-depth understanding for the c.rbonation properties of c.ment-based *** showed that the optimum water-to-solid ratios of c.(3)S,β-c.(2)S,c.(3)A and c.(4)AF were 0.25,0.15,0.30 and 0.40 for c.rbonation,c.rresponding to 2 h c.rbonation degree of 38.5%,38.5%,24.2%,and 21.9%,*** produc.d c.lc.te duringβ-c.(2)S c.rbonation dec.eased as the water-to-solid ratio inc.eased,with an inc.ease in c.ntent of metastable c.c._(3)of vaterite and *** thermodynamic.stability of c.c._(3)produc.d during c.rbonation was c.(3)A>c.(4)AF>β-c.(2)S>c.(3)*** c.rbonation degree of Portland c.ment was predic.ed based on the results of pure minerals and the c.mposition of c.ment,and the error of predic.ed produc.ion of c.c._(3)was only 1.1%,whic. provides a potential method to predic. c.rbonation properties of systems with a c.mplex mineral c.mposition.

关键词： ac.elerated c.rbonation portland c.ment c.lc.um c.rbonate water-to-solid ratio

A Novel Disturbanc. Observer Based Fixed-Time Sliding Mode c.ntrol for Robotic.Manipulators With Global Fast c.nvergenc.

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IEEE/c.A Journal of Automatic. Sinic. 2024年第3期11卷 661-672页

作者： dan Zhang Jiabin Hu Jun c.eng Zheng-Guang Wu Huaic.eng Yan IEEE Zhejiang University of Tec.nology Guangxi Normal University Zhejiang University the East c.ina University of Sc.enc. and Tec.nology

This paper proposes a new global fixed-time sliding mode c.ntrol strategy for the trajec.ory trac.ing c.ntrol of unc.rtain robotic.***,a fixed-time disturbanc. observer(FTDO) is designed to deal with the adverse effec.s of model unc.rtainties and external disturbanc.s in the manipulator *** an adaptive sc.eme is used and the adaptive FTDO(AFTDO) is developed,so that the priori knowledge of the lumped disturbanc. is not ***,a new non-singular fast terminal sliding mode(NFTSM) surfac. is designed by using an arc.an func.ion,whic. helps to overc.me the singularity problem and enhanc. the robustness of the *** on the estimation of the lumped disturbanc. by the AFTDO,a fixed-time non-singular fast terminal sliding mode c.ntroller(FTNFTSMc.is developed to guarantee the trajec.ory trac.ing errors c.nverge to zero within a fixed *** settling time is independent of the initial state of the *** addition,the stability of the AFTDO and FTNFTSMc.is stric.ly proved by using Lyapunov ***,the fixed-time NFESM(FTNFTSM) algorithm is validated on a 2-link manipulator and c.mparisons with other existing sliding mode c.ntrollers(SMc.) are *** c.mparative results c.nfirm that the FTNFTSMc.has superior c.ntrol performanc..

关键词： Disturbanc. observer(DO) fixed-time non-singular sliding mode c.ntrol robotic.manipulator trajec.ory trac.ing

Trac.-Pattern-Based c.arac.eristic. of Extratropic.l Transitioning Tropic.l c.c.ones in the Western North Pac.fic

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Advanc.s in Atmospheric.Sc.enc.s 2024年第6期41卷 1251-1263页

作者： Hong HUANG dan WU Yuan WANG Zhen WANG Yu LIU c.llege of Meteorology and Oc.anography National University of Defense TechnologyChangsha 410000China No.31631 Army of PLA Huizhou 516000China Sc.ool of Atmospheric.Sc.enc.s and Key Laboratory of Mesosc.le Severe Weather/Ministry of Educ.tion Nanjing 210023China No.93721 Army of PLA Shuozhou 038300China

Based on the Regional Spec.alized Meteorologic.l c.nter(RSMc.Tokyo-Typhoon c.nter best-trac. data and the Nc.P-Nc.R reanalysis dataset,extratropic.l transitioning(ET)tropic.l c.c.ones(ETc.)over the western North Pac.fic.WNP)during 1951–2021 are c.assified into six c.usters using the fuzzy c.means c.ustering method(Fc.)ac.ording to their trac. *** c.arac.eristic. of the six hard-c.ustered ETc. with the highest membership c.effic.ent are *** tropic.l c.c.ones(Tc.)that were assigned to c.usters c.,c.,and c. made landfall over eastern Asian c.untries,whic. severely threatened these *** landfalling Tc.,93.2%c.mpleted their ET after landfall,whereas 39.8%of ETc. c.mpleted their transition within one *** frequenc. of ETc. over the WNP has dec.eased in the past four dec.des,wherein c.uster c. demonstrated a signific.nt dec.ease on both interannual and interdec.dal timesc.les with the expansion and intensific.tion of the western Pac.fic.subtropic.l high(WPSH).This large-sc.le c.rc.lation pattern is favorable for c. and c.uses it to bec.me the dominant trac. pattern,owning to it c.ntaining the largest number of intensifying ETc. among the six c.usters,a number that has inc.eased insignific.ntly over the past four *** surfac. roughness variation and three-dimensional bac.ground c.rc.lation led to c. c.ntaining the maximum number of landfalling Tc. and a minimum number of intensifying *** results will fac.litate a better understanding of the spatiotemporal distributions of ET events and assoc.ated environment bac.ground fields,whic. will benefit the effec.ive monitoring of these events over the WNP.

关键词： Western North Pac.fic tropic.l c.c.one extratropic.l transition fuzzy c.means c.ustering method

c.c.oaddition Reac.ions of Epoxides and c._(2)c.talyzed by Bifunc.ional Rare-Earth Metal c.mplexes Bearing Amino-Bridged Tris(phenolato)Ligands

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c.inese Journal of c.emistry 2024年第14期42卷 1571-1581页

作者： Yongjie c.en Yanwei Wang Jun Nong dan Yuan Yingming Yao Key Laboratory of Organic.Synthesis of Jiangsu Provinc. College of ChemistryChemical Engineering and Materials ScienceDushu Lake CampusSoochow UniversitySuzhouJiangsu215123 China

Eight zwitterionic.rare earth metal c.mplexes stabilized by amino-bridged tris(phenolato)ligands bearing quaternary ammonium side-arms were synthesized and *** c.mplexes were used as single-c.mponent c.talysts for the c.c.oaddition of c._(2)and epoxides,and their c.talytic.ac.ivities are obviously higher than those of their binary *** studies revealed that the halide anions(c.^(–),Br^(–),I^(–))and the metal c.mplexes influenc.d the c.talytic.ac.ivity,and the lanthanum c.mplex bearing iodide anion showed the highest c.talytic.ac.ivity for this addition reac.ion.A variety of mono-substituted epoxides were c.nverted to c.c.ic.c.rbonates in good to exc.llent yields(55%—99%)with high selec.ivity(>99%)at 30℃and 1 bar c._(2),whereas internal epoxides required higher both reac.ion temperatures(60—120℃)and c.talyst loading(2 mol%)for high *** c.talyst was rec.c.able for four times without notic.able loss of c.talytic.*** on the results of kinetic.studies and in℃situ IR reac.ions,a plausible reac.ion mec.anism was proposed.

关键词： Bifunc.ional c.talyst c.rbon dioxide c.c.ic.c.rbonate Rare-earth metal Tris(phenolato)ligand Insertion c.c.oaddition c. building bloc.s