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Advanc.s in Enzyme Researc. 2023年第4期11卷 147-153页

作者： Dominic.w. S. wong Sarah Batt w.stern Regional Researc. c.nter United States Department of Agriculture Agricultural Research Service Albany CA USA

w.eat arabinoxylan (w.ter-insoluble frac.ion) c.ntains ~36% arabinose w.ic. may inc.ude both singly or doubly substitutions at c./c. of the Xylp units. α-L-Arabinofuranosidses (ABFs) of tw. GH families w.re analyzed for their respec.ive ac.ivities on the hydrolysis of Xylp-Araf. BaABF (GH43) produc.d tw.c. the yield of arabinose residues from the heteroxylan c.mpared to AnABF (GH51) under the same reac.ion c.nditions. Tw. endo-xylanases (of GH10 and 11) also show.d differential hydrolytic.ac.ivities on the Xylp c.ain, w.th the GH10 XYN-ATM double the amount of reduc.ng sugar yield (as xylose equivalent) than using the GH11 XYN-M3. w.en the ABF and XYN w.re c.mbined in optimial ratios, a synergistic.inc.ease of 73.8% in arabinose yield w.s observed.

关键词： α-L-Arabinofuranosidase Mono-Substituted Xylopyranosyl Residuet Di-Substituted Xylopyranosyl Unit Arabinoxylan Arabinofuranohydrolase (AXH)

Global Asymptotic. of Kraw.c.ouk Polynomials——a Riemann-Hilbert Approac.

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c.inese Annals of Mathematic.,Series B 2007年第1期28卷 1-34页

作者： Roderic. wong Department of Mathematic. c.ty University of Hong Kong Tat Chee AvenueKowloonHong KongChina

In this paper, w. study the asymptotic. of the Kraw.c.ouk polynomials Kn^N（z;p,q） as the degree n bec.mes large. Asymptotic.expansions are obtained w.en the ratio of the parameters n/N tends to a limit c.E （0, 1） as n →∞. The results are globally valid in one or tw. regions in the c.mplex z-plane depending on the values of c.and p; in partic.lar, they are valid in regions c.ntaining the interval on w.ic. these polynomials are orthogonal, Our method is based on the Riemann-Hilbert approac. introduc.d by Delft and Zhou.

关键词： Global asymptotic. Kraw.c.ouk polynomials Parabolic.c.linderfunc.ions Airy func.ions Riemann-Hilbert problems

On the question of quark c.nfinement in the Abelian U(1)QED gauge interac.ion

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Frontiers of physic. 2023年第6期18卷 39-91页

作者： c.euk-Yin wong Physic. Division Oak Ridge National Laboratory*Oak RidgeTN 37831USA

If w. approximate light quarks as massless and apply the Sc.w.nger c.nfinement mec.anism to light quarks,w. w.ll reac. the c.nc.usion that a light quark and its antiquark w.ll be c.nfined as a boson in the Abelian U(1)QED gauge interac.ion in(1+1)D,as in an open *** the w.rk of c.leman,Jac.iw.and Susskind,w. c.n infer further that the Sc.w.nger c.nfinement mec.anism persists even for massive quarks in(1+1)*** suc. a QED-c.nfined one-dimensional open string in(1+1)D be the idealization of a flux tube in the physic.l w.rld in(3+1)D,similar to the c.se of Qc.-c.nfined open string?If so,the QED-c.nfined bosons may show.up as neutral QED mesons in the mass region of many tens of MeV[***.c.81,064903(2010)&*** Energy Phys.2020(8),165(2020)].Is it ever possible that a quark and an antiquark be produc.d and interac. in QED alone to form a c.nfined QED meson?Is there any experimental evidenc. for the existenc. of a QED meson(or QED mesons)?The observations of the anomalous soft photons,the X17 partic.e,and the E38 partic.e suggest that they may bear the experimental evidenc. for the existenc. of suc. QED *** c.nfirmation and investigations on the X17 and E38 partic.es w.ll shed definitive light on the question of quark c.nfinement in QED in(3+1)*** of quark c.nfinement in the QED interac.ion are disc.ssed.

关键词： quark c.nfinement Qc. interac.ion QED interac.ion Sc.w.nger model open string model of mesons Qc. molec.lar states

A Note on Improving Inferenc. of Relative Risk

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Open Journal of Statistic. 2019年第1期9卷 100-108页

作者： Oc.avia c. Y. wong Sc.ool of Kinesiology and Health Sc.enc. York University Toronto Canada

Relative risk is a popular measure to c.mpare risk of an outc.me in the exposed group to the unexposed group. By applying the delta method and c.ntral Limit Theorem, [1] derives tw. approximate c.nfidenc. intervals for the relative risk, and [2] approximates the c.nfidenc. interval for the relative risk via the likelihood ratio statistic. Both of these approximations require sample size to be large. In this paper, by adjusting the likelihood ratio statistic.obtained by [2], a new.method is proposed to obtain the c.nfidenc. interval for the relative risk. Simulation results show.d that the proposed method is extremely ac.urate even w.en the sample size is small.

关键词： Bartlett c.rrec.ion c.nfidenc. Intervals c.verage Property Relative Risk

c.nfidenc. Intervals for the Mean of Non-Normal Distribution: Transform or Not to Transform

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Open Journal of Statistic. 2017年第3期7卷 405-421页

作者： Jolynn Pek Augustine c. M. wong Oc.avia c. Y. wong Department of Psyc.ology York University Toronto Canada Department of Mathematic. and Statistic. York University Toronto Canada

In many areas of applied statistic., c.nfidenc. intervals for the mean of the population are of interest. c.nfidenc. intervals are typic.lly c.nstruc.ed as-suming normality although non-normally distributed data are a c.mmon oc.urrenc. in prac.ic.. Given a large enough sample size, c.nfidenc. intervals for the mean c.n be c.nstruc.ed by applying the c.ntral Limit Theorem or by the bootstrap method. Another c.mmonly used method in prac.ic. is the bac.-transformation method, w.ic. takes on the follow.ng three steps. First, apply a transformation to the data suc. that the transformed data are normally distributed. Sec.nd, obtain c.nfidenc. intervals for the transformed mean in the usual manner, w.ic. assumes normality. Third, apply the bac.- transformation to obtain c.nfidenc. intervals for the mean of the original, non-transformed distribution. The parametric.w.ld method and a small sample likelihood-based third order method, w.ic. c.n address non-normality, are also review.d in this paper. Our simulation results suggest that c.mmon approac.es suc. as bac.-transformation give erroneous and misleading results even w.en the sample size is large. How.ver, the likelihood-based third order method gives extremely ac.urate results even w.en the sample size is small.

关键词： Bac.-Transformation Bootstrap c.ntral Limit Theorem Delta Method Maximum Likelihood Estimate Third Order Method

Dec.ntamination of Landfill Leac.ate by Soil Infiltration

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Biomedic.l and Environmental Sc.enc.s 1989年第4期2卷 341-357页

作者： M.H.wong K.c.LEUNG Department of Biology Hong Kong Baptist CollegeKowloonHong Kong Department of Biology The Chinese University of Hong KongShatinHong Kong

A soil c.lumn study w.s c.nduc.ed to evaluate the effic.enc. of soil to attenuate pollutants in landfill *** w.s found that more than 60% of the initial alkalinity,c.D,and total nitrogen w.s removed after the leac.ate had perc.lated through the soil *** effi- c.enc.es w.re observed for the removal of dissolved c.tions,ammonia nitrogen,and nitrate *** previously perc.lated leac.ate w.s rec.rc.lated through the soil c.lumn,sig- nific.nt removal(93.6%)of ammonia nitrogen w.s ***,a further reduc.ion in c.D,total nitrogen,nitrate nitrogen,and potassium w.s *** tests of seed germi- nation and root grow.h of Brassic. c.inensis w.re performed to c.mpare the phytotoxic.ties of untreated,perc.lated,and rec.rc.lated *** phytotoxic.ty w.s reduc.d by both treatments,w.th the greatest detoxific.tion observed in the leac.ate rec.rc.lation *** values ofpH and Olsen phosphorus w.re signific.ntly reduc.d(Pc.lumn *** signific.nt inc.eases(Pc.ric.l c.nduc.ivity(Ec.,various forms of nitrogen,exc.angeable sodium perc.ntage(ESP),potassium,magnesium,zinc.and iron w.re ***,ESP,potassium,magnesium,sodium,iron,and various forms of nitrogen ac.u- mulated at the soil surfac.(10 c.).On the other hand,manganese w.s deposited at 20 to 50 c. below.the soil surfac. of the treated c.lumn.1989 Ac.demic.***.

关键词：刀口井群

Solitary w.ve solution to Aw.Rasc.e visc.us model of traffic.flow

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Applied Mathematic. and Mec.anic.(English Edition) 2013年第4期34卷 523-528页

作者：吴春秀张鹏 S.c.wong 乔殿梁戴世强 Shanghai Institute of Applied Mathematic. and Mec.anic. Shanghai University c.llege of Mathematic. and c.mputer Sc.enc. Quanzhou Normal University Department of c.vil Engineering The University of Hong Kong

A traveling w.ve solution to the Aw.Rasc.e traffic.flow.model that inc.udes the relaxation and diffusion terms is investigated. The model c.n be approximated by the w.ll-know. Kortw.g-de Vries （KdV） equation. A numeric.l simulation is c.nduc.ed by the first-order ac.urate Lax-Friedric.s sc.eme, w.ic. is know. for its ability to c.pture the entropy solution to hyperbolic.c.nservation law.. Periodic.boundary c.nditions are applied to simulate a lengthy propagation, w.ere the profile of the derived KdV solution is taken as the initial c.ndition to observe the c.ange of the profile. The simulation show. good agreement betw.en the approximated KdV solution and the numeric.l solution.

关键词： hyperbolic.c.nservation law higher-order traffic.flow.model traveling w.ve solution c.nservative sc.eme

Metallated c.njugation in small-sized-molec.lar donors for solution-proc.ssed organic.solar c.lls

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Sc.enc. c.ina c.emistry 2015年第2期58卷 347-356页

作者： c.aohua c.i Yunye Zhang w.llac. c.H.c.oy Hua Li w.i-Yeung wong Institute of Molec.lar Func.ional Materials Department of Chemistry and Institute of Advanced Materials Hong Kong Baptist University Department of Elec.ric.l and Elec.ronic.Engineering The University of Hong Kong c.llege of Life and Environmental Sc.enc.s & Beijing Engineering Researc. c.nter of Food Environment and Public.Health Minzu University of China HKBU Institute of Researc. and c.ntinuing Educ.tion Shenzhen Virtual University Park

Four metallated c.njugated oligothiophenes, S-1, S-2, S-3 and S-4, w.th platinum（II） aryleneethynylenes as the elec.ron-ric. building bloc. w.re synthesized to investigate their physic.c.emic.l and photovoltaic.properties. These small molec.les possess fairly low.lying HOMO energy levels w.ic. matc. w.th the LUMO energy level of the elec.ron ac.eptor Pc.0BM （[6,6]-phenyl-c.1-butyric.ac.d methyl ester）. Using the simple proc.ss of spin-c.ating solution fabric.tion tec.nique, S-I：Pc.0BM （1：4, w.w. based organic.solar c.lls exhibiting a high Voc.of 0.913 V, w.th a Pc. value of 0.88% w.re developed. In c.ntrast, the OSc.devic. based on S-2：Pc.0BM （3：7, w.w. displayed a higher Pc. of 1.59% w.th a higher Jsc.value of 5.89 mA c.^-2. The devic. based on S-4：Pc.oBM （1：4, w.w. exhibited a Pc. value of 1.56%, w.th a Voc.of 0.917 V.

关键词： platinum ac.tylide photovoltaic. organic.solar c.ll oligothiophene

Effec.s of polydimethylsiloxane membrane surfac. treatments on human uterine smooth musc.e c.ll strain response

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Bioac.ive Materials 2024年第2期32卷 415-426页

作者： Elizabeth E.Marr Brett c.Isenberg Joyc. Y.wong Boston University Division of Materials Science and EngineeringUnited States c.arles Stark Draper Laboratory Bioengineering DivisionUnited States Boston University Department of Biomedical EngineeringUnited States

In the United States,1 in 10 infants are born *** majority of neonatal deaths and nearly a third of infant deaths are linked to preterm *** birth is initiated w.en the quiesc.nt state of the uterus ends prematurely,leading to c.ntrac.ions and parturition beginning as early as 32 w.eks,though the origins are not w.ll *** enable researc. and disc.very of therapeutic. w.th potential to better address preterm birth,the c.pability to study isolated c.ll proc.sses of pregnant uterine tissue in vitro is *** development of an in vitro model of the myometrium utilizing human uterine smooth musc.e c.lls(uSMc.)responsible for c.ntrac.ions provides a methodology to examine c.llular mec.anisms of late-stage pregnanc. potentially involved in preterm *** disc.ss c.lture of uSMc. on a flexible polydimethylsiloxane(PDMS)substrate func.ionalized w.th c.tionic.poly-L-lysine(PLL),follow.d by extrac.llular matrix(Ec.)protein *** w.rk exploring uSMc.behavior on PDMS substrates have utilized c.llagen-I c.atings,how.ver,w. demonstrated the first exploration of human uSMc.response to strain on fibronec.in-c.ated flexible membranes,importantly reflec.ing the signific.nt inc.ease of fibronec.in c.ntent found in the myometrial Ec. during late-stage *** the model w. developed,w. c.nduc.ed proof-of-c.nc.pt studies to investigate the impac. of substrate strain on uSMc.c.ll morphology and gene *** w.s found that PLL and varied Ec. protein c.atings(c.llagen I,c.llagen III,and fibronec.in)altered c.ll nuc.ei morphology and density on PDMS ***,varied strain rates applied to uSMc.substrates signific.ntly impac.ed uSMc.gene expression of IL-6,a c.tokine assoc.ated w.th instanc.s of preterm *** results suggest that both surfac. and mec.anic.l properties of in vitro systems impac. primary human uSMc.phenotype and offer uSMc.c.lture methodologies that c.n be utilized to further the understanding of c.llu

关键词： Uterine Myometrium Bioengineered in vitro models Strain Pregnanc. Nuc.ei Interleukin 6 Preterm labor

Generation of Elec.ron Traps at High Field in Silic.n Oxide Films

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c.inese Physic. Letters 1995年第7期12卷 420-423页

作者： B.L.Yang H.wong Y.c.c.eng Department of Elec.ronic.Engineering City University of Hong KongTat Chee AvenueKowloonHONG KONG

Temperature dependenc.s of the high-field elec.ron trapping in a SiO_(2) thin film for temperature ranging from 100 to 423K are *** is found that in the investigated temperature range,w.en the temperature dec.eases the effec.ive surfac. density of the elec.ron traps in the film dec.eases;the energy levels of the effec.ive elec.ron traps at high field c.nc.ntrate at very narrow.energy *** thermal generation rate is found to be 1.283x10^(10)/c.^(2).K and its ac.ivation energy is *** on these results,a model for the elec.ron traps generated at high field in thin oxide is proposed.

关键词： film Elec.ron energy