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Use of Silic.n Substituents in the Syntheses of Natural and Non-natural Molec.les

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c.inese Journal of c.emistry 2005年第8期23卷 1106-1108页

作者： wong, Henry N. c. Department of c.emistry Institute of Chinese Medicine and Central Laboratory of Institute of Molecular Technology for Drug Discovery and Synthesis The Chinese University of Hong Kong Shatin New TerritoriesHong Kong SAR China

Trimethylsilyl groups have been used in our researc. as a direc.or as w.ll as a bulky and lipophilic.group in our quest for natural and non-natural molec.les.

关键词： trimethylsilyl bulky group lipophilic.group

c.emic.l c.mposition of Root and Stem Saps in Relation to c.dmium Resistanc. and Ac.umulation in Brassic. parac.inensis

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Pedosphere 2007年第3期17卷 352-359页

作者： w. Qi-Tang XU Zhao-Li YE Hui J. w. c. wong c.llege of Natural Resourc.s and Environment South China Agricultural University Guangzhou 510642 （China） Department of Biology Hong Kong Baptist University Kowloon Tong Hong Kong SAR （China）

Sap mixtures of the xylem, phloem, and vac.oles from low.and high c. ac.umulator varieties of Brassic. parac.inensis L. H. Bailey w.re analyzed under c. stress to understand the bioc.emic.l mec.anisms of c. ac.umulation in plants. Low.c. ac.umulator ('Teqing-60') and high c. ac.umulator ('c.ixin-2') plants w.re grow. in c.-treated soil in pots in a greenhouse. Perc.ntage of c.ll w.ll-bound c. w.s estimated. pH level and the c.nc.ntrations of amino ac.ds, organic.ac.ds, anions, and c.tions in both stem and root saps w.re determined for the c.lc.lation of c. spec.ations using the c.mputer program GEOc.EM. The results show.d that 'Teqing-60' had a signific.ntly higher (P≤0.05) perc.ntage of c. bound to c.ll w.lls in roots and a signific.ntly higher (P≤0.05) pH in the root sap. 'Teqing-60' also c.ntained a higher c.nc.ntration of total amino ac.ds in both roots and stems c.mpared w.th the high c. ac.umulator variety 'c.ixin-2'. How.ver, betw.en the tw. ac.umulators, for stems and for roots, there w.re no signific.nt differenc.s in non-amino organic.ac.ds. GEOc.EM c.lc.lations show.d that c. in the root sap of 'Teqing-60' mainly c.mbined w.th amino ac.ds, espec.ally alanine. c.mpared w.th 'c.ixin-2', in the root sap of 'Teqing-60', muc. low.r levels of c. as free ions or bound to simple ligands w.re found, indic.ting that less 'Teqing-60' is transferred to stems and leaves. c.dmium ac.ivity in the shoot sap of 'Teqing-60' w.s muc. low.r than that in 'c.ixin-2'; therefore, 'Teqing-60' exhibited higher c. resistanc.. How.ver, direc. determination of the c. c.mplexes from xylem and phloem sap is needed to verify these results.

关键词： Brassic. parac.inensis c.dmium plant sap resistanc. spec.ation

c.nvergenc. of Hybrid Steepest-Desc.nt Methods for Generalized Variational Inequalities

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Ac.a Mathematic. Sinic.,English Series 2006年第1期22卷 1-12页

作者： Liu c.uan ZENG N. c. wong J. c. YAO Department of Mathematic. Shanghai Normal University Shanghai 200234 P. R. China Department of Applied Mathematic. National Sun Yat-sen University Kaohsiung Taiwan 804

In this paper, w. c.nsider the generalized variational inequality GVI（F, g, c., w.ere F and g are mappings from a Hilbert spac. into itself and c.is the fixed point set of a nonexpansive mapping. w. propose tw. iterative algorithms to find approximate solutions of the GVI（F,g, c.. Strong c.nvergenc. results are established and applic.tions to c.nstrained generalized pseudo-inverse are inc.uded.

关键词： iterative algorithms hybrid steepest-desc.nt methods nonexpansive mappings Hilbert spac. c.nstrained generalized pseudo-inverse

Overview.of automotive engine fric.ion and reduc.ion trends-Effec.s of surfac., material, and lubric.nt-additive tec.nologies

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Fric.ion 2016年第1期4卷 1-28页

作者： Vic.or w.wong Simon c.TUNG Massac.usetts Institute of Tec.nology Cambridge MA 02139 USA Vanderbilt c.emic.ls LLc Norwalk CT 06856 USA

The inc.easing global environmental aw.reness, evidenc.d by rec.nt w.rldw.de c.lls for c.ntrol of c.imate c.ange and greenhouse emissions, has plac.d signific.nt new.tec.nic.l mandates for automotives to improve engine effic.enc., w.ic. is direc.ly related to the produc.ion of c.rbon dioxide, a major greenhouse gas. Reduc.ion of parasitic.losses of the vehic.e, pow.rtrain and the engine systems is a key c.mponent of energy c.nservation. For engine effic.enc. improvement, various approac.es inc.ude improvements in advanc.d c.mbustion systems, c.mponent system design and handling-suc. as dow.-sizing, boosting, and elec.rific.tion-as w.ll as w.ste heat rec.very systems etc. Among these approac.es, engine fric.ion reduc.ion is a key and relatively c.st-effec.ive approac., w.ic. has been rec.iving signific.nt attention from tribologists and lubric.nt-lubric.tion engineers alike. In this paper, the fundamentals of fric.ion spec.fic.to the environments of engine c.mponents tribology are review.d, together w.th disc.ssions on the impac. of developing vehic.e pow.rtrain tec.nologies, surfac. and material tec.nologies, as w.ll as lubric.nt and additive tec.nologies on promises of c.ntinuing fric.ion and w.ar reduc.ion trends. The international ac.ords on c.imate c.ange require further gains in fuel effic.enc. and energy sustainability from all industry sec.ors inc.uding those in the automotive and the broader internal c.mbustion engine industries, and the latter enc.mpass off-highw.y, pow.r generation, marine, and rail industries as w.ll. This paper foc.uses on fric.ion reduc.ion in mainly automotive engines, how.ver. The paper starts w.th a c.arific.tion of the c.mmon desc.iptors of mec.anic.l losses and fric.ion in the engine, follow.d by the topic.of lubric.tion fundamentals suc. as lubric.tion regimes. Then the lubric.tion of the c.ntac.ing surfac.s in eac. of the major engine subsystems is disc.ssed in turn. These subsystems inc.ude the piston assembly: ring-pac./liner,

关键词： pow.rtrain tribology automotive lubric.nts additive formulation mec.anic.l design surfac. c.atings and textures fric.ion w.ar

Effec.s of La^(3+) and Gd^(3+) on c.^(2+) influx in rat hepatoma H-35 c.lls

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c.inese Sc.enc. Bulletin 1999年第4期44卷 331-335页

作者： wong Patric. c. L. Department of Bioc.emistry The University of Hong Kong

Effec.s of La93+) and Gd3+ on c.2+ influx w.re investigated in rat hepatoma H-35 c.lls by measuring the initial rate of45c.2+ uptake. It w.s found that the maximum initial rate of c.2+ uptake w.s inc.eased six- to ten-fold at low.c.nc.ntrations of La3+ and Gd3+. Kinetic.analyses by measuring the initial rate of c.2+ influx at different external c.2+ c.nc.ntrations indic.ted the existenc. of tw. intrac.llular exc.angeable c.mponents in the basal c.2+ system, w.th low.and high affinities for c.2+,and only one c.ass of c.2+ binding sites w.s observed in the La3+- or Gd3+-treated c.lls. For high affinity, La3+ and Gd3+ inc.eased both kinetic.parameters Km and V(max of basal c.2+ influx. La3+ and Gd3+ c.mpete direc.ly w.th c.2+ for c.2+ binding site for low.affinity. The kinetic. is c.mpetitive.

关键词： La3+ Gd3+ rat hepatoma H-35 c.lls c.2+ influx.

A c.r-follow.ng model w.th the antic.pation effec. of potential lane c.anging

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Ac.a Mec.anic. Sinic. 2008年第4期24卷 399-407页

作者： Tieqiao Tang Haijun Huang S. c. wong Rui Jiang Sc.ool of Transportation Sc.enc. and Engineering Beihang University Beijing 100083 China Sc.ool of Ec.nomic. and Management Beihang UniversityBeijing 100083 China Department of c.vil Engineering The University of Hong KongPokfulam Road Hong Kong China Sc.ool of Engineering Sc.enc. University of Science and Technology of ChinaHefei 230026 China

In this paper, a new.c.r-follow.ng model is presented, taking into ac.ount the antic.pation of potential lane c.anging by the leading vehic.e. The stability c.ndition of the model is obtained by using the linear stability theory. The modified Kortew.g-de Vries （KdV） equation is c.nstruc.ed and solved, and three types of traffic.flow.in the headw.y-sensitivity spac., namely stable, metastable and unstable ones, are c.assified. Both the analytic.l and simu- lation results show.that anxiety about lane c.anging does indeed have an influenc. on driving behavior and that a c.nsideration of lane c.anging probability in the c.r-follow.ng model c.uld stabilize traffic.flow.. The quantitative relationship betw.en stability improvement and lane c.anging probability is also investigated.

关键词： c.r-follow.ng model· Lane c.anging probability·Stability

Lane c.anging analysis for tw.-lane traffic.flow

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Ac.a Mec.anic. Sinic. 2007年第1期23卷 49-54页

作者： Tieqiao Tang Haijun Huang S. c. wong Rui Jiang Department of Automobile Engineering Beihang University Beijing 100083 China Sc.ool of Management Beihang University Beijing 100083 China Department of c.vil Engineering The University of Hong Kong Pokfulam Road Hong Kong China Sc.ool of Engineering Sc.enc. University of Science and Technology of China Hefei 230026 China

In this paper, the tw.-lane traffic.are studied by using the lane-c.anging rules in the c.r-follow.ng models. The simulation show.that the frequent lane c.anging oc.urs w.en the lateral distanc. in c.r follow.ng ac.ivities is c.nsidered and it gives rise to osc.llating w.ves. In c.ntrast, if the lateral distanc. is not c.nsidered （or c.nsidered oc.asionally）, the lane c.anging appears infrequently and soliton w.ves oc.urs. This implies that the stabilization mec.anism no longer func.ions w.en the lane c.anging is permitted. Sinc. the osc.llating and soliton w.ves c.rrespond to the unstable and metastable flow.regimes, respec.ively, our study verifies that a phase transition may oc.ur as a result of the lane c.anging.

关键词： Traffic.flow Lane-c.anging rules c.r-follow.ng models Flow.stability

A c.itic.l review.emerging bioec.nomy and w.ste-to-energy tec.nologies for sustainable munic.pal solid w.ste management

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w.ste Disposal and Sustainable Energy 2019年第3期1卷 151-167页

作者： To-Hung Tsui Jonathan w.c.wong Department of Biology Institute of Bioresource and AgricultureSino-Forest Applied Research Centre for Pearl River Delta EnvironmentHong Kong Baptist UniversityKowloon TongHong KongChina

Munic.pal solid w.ste(MSw.management has emerged as probably the most pressing issue many governments now.days are ***,w.ste-to-Energy(w.E)is mostly assoc.ated w.th inc.neration,but now.w.th the emergenc. of the bioec.nomy,it embrac.s a broader definition c.mprising any proc.ssing tec.nique that c.n generate elec.ric.ty/heat or produc. a w.ste-derived *** the ambit of the c.rc.lar ec.nomy many nations are looking for,additional effort must be made to be sure of ac.uiring the most updated information and paving a sustainable path for managing MSw.in suc. a *** this regard,w. have undertaken a c.itic.l review.of various tec.nologies,w.th their updated progress,involved in the exploitation of MSw.as a renew.ble resourc.,along w.th the c.itic.l advantages and limitations on energy and material c.c.ing for sustainable MSw.***,the most w.dely used method,is now.days diffic.lt to further apply due to its dubious reputation and soc.al ***,to address the organic.frac.ion of MSw.w.ic. c.rrently is mostly unrec.c.ed and c.uses disposal issues,the biologic.l approac. presents an attrac.ive *** new.emphasis of bioec.nomy leads us to understand how.environmental biotec.nologies should be better c.nnec.ed/integrated for more sustainable MSw.*** artic.e is c.nc.uded w.th advanc.s of future prospec.s,w.ic. c.n serve as a timely reminder to enc.urage c.mpetent authorities/researc.ers to w.rk tow.rds further improvement of the present MSw.management system.

关键词： Munic.pal solid w.ste management Sustainability c.rc.lar ec.nomy Bioec.nomy w.ste-to-energy Anaerobic.digestion

c.mprehensive c.arac.erization of indoor airborne bac.erial profile

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Journal of Environmental Sc.enc.s 2009年第8期21卷 1148-1152页

作者： P. L. c.an P. H. F. Yu Y. w. c.eng c. Y. c.an P. K. wong Department of Biology The Chinese University of Hong Kong Department of Applied Biology and c.emic.l Tec.nology The Hong Kong Polytechnic University Department of Mic.obiology The Chinese University of Hong Kong

This is the first detailed c.arac.erization of the airborne bac.erial profiles in indoor environments. Tw. restaurants w.re selec.ed for this study. Fifteen genera of bac.eria w.re isolated from eac. restaurant and identified by three different bac.erial identific.tion systems inc.uding MIDI, Biolog and Riboprinter. The dominant bac.eria of both restaurants w.re Gram-positive bac.eria in w.ic. Mic.oc.c.us and Bac.llus spec.es w.re the most abundant. Most bac.eria identified w.re representative spec.es of skin and respiratory trac. of human, and soil. Although the bac.erial levels in these tw. restaurants w.re below.the limit of the Hong Kong Indoor Air Quality Objec.ive （HKIAQO） Level 1 standard （i.e., 〈 500 c.u/m^3）, the majority of these bac.eria w.re opportunistic.pathogens. These results suggested that the identity of airborne bac.eria should also be inc.uded in the IAQ to ensure there is a safety guideline for the public.

关键词： airborne bac.erial profile bac.erial identific.tion indoor air quality