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Canonical m.t.ics on com.lex m.nifold

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Science China m.t.em.t.cs 2008年第4期51卷 503-508页

作者： YAU shing-t.ng(Yau S.-t.) Depart.ent.of m.t.em.t.cs Harvard University

Com.lex m.nifolds are t.pological spaces t.at.are covered by coordinat. chart. where t.e coordinat. changes are given by holom.rphic *** exam.le,Riem.nn surfaces are one dim.nsional com.lex *** order t. underst.nd com.lex m.nifolds,it.is useful t. int.oduce m.t.ics t.at.are com.at.ble wit. t.e com.lex *** general,we should have a pair(m.ds^2_m.where ds^2_m.is t.e *** m.t.ic is said t. be canonical if any biholom.rphism. of t.e com.lex m.nifolds are aut.m.t.cally *** m.t.ics can nat.rally be used t. describe invariant. of t.e com.lex st.uct.res of t.e m.nifold.

关键词：云门

t.t.l synt.esis of(-)-goniopypyrone

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Chinese Journal of Chem.st.y 1993年第5期11卷 479-480页

作者： shing t.ny k.m. Depart.ent.of Chem.st.y The Chinese University of Hong KongShatinH.K.

Recent.y,t.ree novel st.ryl-lact.nes,goniofufurone,goniopypyrone,and 8-acet.lgo-niot.iol,which are cyt.t.xic t. hum.n t.m.r cells,have been isolat.d from.t.e st.m.ark.of Goniot.alam.s *** t.ese lact.nes,goniopypyrone ... 详细信息

关键词： t.t.l synt.esis of goniopypyrone t.F

Benzene and lead exposure assessm.nt.am.ng occupat.onal bus drivers in Bangk.k.t.affic

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Journal of Environm.nt.l Sciences 2004年第1期16卷 61-66页

作者： shing t.t.LEONG PREECHA LAORt.NAk.L Research Lab Supervisor Urban Environmental Engineering and Management ProgramSchool of EnvironmentResource and DevelopmentAsian Institute of TechnologyAffiliated Research Associate G.P.O. Box 4 Klong Luang Pathumthani 12120 Thailand216 Soi Satsana 5 Phya Thai Bangkok 10400 Thailand

Four environm.nt.l and biological m.nit.ring sit.s were st.at.gically est.blished t. evaluat. benzene and lead exposure assessm.nt.at.various t.affic zones of Bangk.k.m.t.opolit.n Region(Bm.). Biological m.asurem.nt.of 48 non air-condit.oned, m.le bus drivers was carried t. st.dy t.e relat.onship bet.een individual exposure levels and exposure biom.rk.rs. t.e st.dy group was furt.er sub-divided int. four age groups(16—25, 26—35, 36—45 and 46—55 years old) t. m.nit.r t.e age—relat.d exposure effect.. A t.t.l of 12 unexposed persons were deliberat.ly chosen as t.e cont.ol group. m.asurem.nt.of unm.t.bolized benzene in blood and analysis of urinary t.-m.conic acid urine and urinary creat.nine are recom.ended as biom.rk.rs of benzene exposure. m.asurem.nt.of lead in blood and urine is also recom.ended for t.e biological m.nit.ring of lead exposure. During t.e m.nit.ring period, benzene and lead levels at.Yaowarat.Road was C_6H_6: 42.46±3.88 μg/m. 3, Pb: 0.29±0.03 μg/m. 3 and decreased t. C_6H_6: 33.5±1.35 μg/m. 3, Pb: 0.13±0.01 μg/m. 3 at.Phahonyot.in Road. Significant.difference was est.blished bet.een t.e nonsm.k.ng exposed group and nonsm.k.ng cont.ol group for blood benzene concent.at.ons ( P t.o-t.iled, m.nn-Whit.ney U t.st.. St.ong correlat.ons were also found bet.een t.ans-t.ans-m.conic acid concent.at.ons in post.shift.sam.les and at.ospheric benzene concent.at.ons. Sim.larly, good correlat.on bet.een all of biom.rk.rs and lead level in air is est.blished from.aut.m.bile *** analysis revealed t.at.am.ng t.e occupat.onal populat.on in t.e urban sit.s, t.e driver groups were found t. have t.e highest.risk.of benzene and lead exposures derived from.aut.m.bile em.ssion.

关键词： benzene and lead m.asurem.nt biom.rk.rs exposure assessm.nt hum.n biom.nit.ring unleaded gasoline

COm.Ut.NG HARm.NIC m.PS AND CONFORm.L m.PS ON POINt.CLOUDS

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Journal of Com.ut.t.onal m.t.em.t.cs 2023年第5期41卷 879-908页

作者： t.anqi Wu shing-t.ng Yau Cent.r of m.t.em.t.cal Sciences and Applicat.ons Harvard UniversityCambridgeMA 02138USA Depart.ent.of m.t.em.t.cs Harvard UniversityCambridgeMA 02138USA

We use a narrow-band approach t. com.ut. harm.nic m.ps and conform.l m.ps for surfaces em.edded in t.e Euclidean 3-space,using point.cloud dat. *** a surface,or a point.cloud approxim.t.on,we sim.ly use t.e st.ndard cubic lat.ice t. approxim.t. it.ϵ-*** t.e harm.nic m.p of t.e surface can be approxim.t.d by discret. harm.nic m.ps on *** conform.l m.p,or t.e surface uniform.zat.on,is achieved by m.nim.zing t.e Dirichlet.energy of t.e harm.nic m.p while deform.ng t.e t.rget.surface of const.nt.*** propose algorit.m. and num.rical exam.les for closed surfaces and t.pological *** t.e best.of t.e aut.ors’k.owledge,our approach provides t.e first.m.shless m.t.od for com.ut.ng harm.nic m.ps and uniform.zat.ons of higher genus surfaces.

关键词： harm.nic m.ps conform.l m.ps point.clouds

Healt. im.licat.on am.ng occupat.onal exposed work.rs in a chrom.um.alloy fact.ry, t.ailand

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Journal of Environm.nt.l Sciences 2004年第2期16卷 181-186页

作者： S. m.t.am.ra shing t.t.Leong Research Lab Supervisor Urban Environmental Engineering and Management Program School of EnvironmentResources and DevelopmentAsian Institute of Technology G.P.O. Box 4Klong LuangResearch Lab SupervisorUrban Environmental Engineering and Management Program School of EnvironmentResources and DevelopmentAsian Institute of Technology G.P.O. Box 4Klong Luang Pathumthani 12120 ThailandPathumthani 12120 Thailand

t.is st.dy was conduct.d t. assess t.e occupat.onal exposure and it. healt. im.act.on t.e chrom.um.alloy work.rs. Environm.nt.l and biological m.nit.ring, noise and audiom.t.y m.asurem.nt. were done t. evaluat. t.e exposure levels in t.e fact.ry. A t.t.l of 112 non-sm.k.ng work.rs were m.nit.red from.July 2001 t. August.2002 t.e result. showed t.at.m.st.of t.e chrom.um.and lead exposures in t.e fact.ry were below t.e ACGIH-t.A of 50 μg/m. 3 for chrom.um.Ⅵ) and OSHA-PEL of 50 μg/m. 3 for lead. t.e highest.chrom.um.7 25±0 16 μg/m. 3) and lead(14 50±0 29 μg/m. 3) concent.at.ons were m.asured in t.e vibro room. t.e result. indicat.d t.at.elevat.d concent.at.ons of chrom.um.and lead were found in bot. blood and urine sam.les especially in t.ose areas which were charact.rized by poor vent.lat.on. t.e m.t.l cont.nt. in blood and urine sam.les were significant.y correlat.d wit. airborne m.t.l concent.at.ons in t.e fact.ry. t.e result.dem.nst.at.d t.at.blood and urinary levels am.ng work.rs were associat.d wit. increasing age and durat.on of exposure. t.e back.round noise level of t.e fact.ry ranged from.67 6 t. 89 2 dBA and was frequent.y higher t.an t.e t.reshold lim.t.value for noise(90 dBA). According t. t.e audiom.t.ic t.st. t.e exposed work.rs showed signs of noise-induced hearing loss. Noise at.work.cont.nued t. be an im.ort.nt.fact.r t. hearing loss am.ng exposed work.rs. In our st.t.st.cal analysis, a significant.hearing loss was est.blished on age effect.and year of exposure am.ng t.e work.orce.

关键词： chrom.um.and lead exposure elect.oplat.ng environm.nt.l and biological m.nit.ring audiom.t.y m.asurem.nt

Novel Field Em.ssion Organic Light.Em.t.ing Diodes wit. Dynode

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发光学报 2011年第1期32卷 1-6页

作者： m.iso YOk.YAm. LI Chi-shing SU Shui-hsiang Depart.ent.of Elect.onic Engineering I-Shou UniversityKaohsiung CountyChina

t.is work.present. novel field em.ssion organic light.em.t.ing diodes(FEOLEDs) wit. dynode,in which an organic EL light.em.t.ing layer is used inst.ad of an inorganic phosphor t.in film.in t.e field em.ssion display(FED).t.e proposed FEOLEDs int.oduce field em.ssion elect.ons int. organic light.em.t.ing diodes(OLEDs),which exhibit.a higher lum.nous efficiency t.an convent.onal *** field em.ssion elect.ons em.t.ed from.t.e carbon nanot.bes(CNt.) cat.ode and t. be am.lified by im.act.t.e dynode in *** field em.ssion elect.ons are inject.d int. t.e m.lt.-layer organic m.t.rials of OLED t. increase t.e elect.on ***,t.e proposed FEOLED increase t.e lum.nance of OLED from.10 820 cd/m. t. 24 782 cd/m. by raising t.e current.densit. of OLED from.an ext.rnal elect.on *** role of FEOLED is t. add t.e quant.t. of elect.ons-holes pairs in OLED,which increase t.e excit.n and furt.er increase t.e lum.nous efficiency of *** t.e sam. operat.ng current.densit.,t.e FEOLED exhibit. a higher lum.nous efficiency t.an t.at.of OLED.

关键词： field em.ssion diodes organic light.em.t.ing diodes elect.ons

t.ism.a t.nt.culat.(Burm.nniaceae t.ibe t.ism.eae) from.Hong k.ng:first.record of t.e genus and t.ibe from.cont.nent.l China

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Journal of Syst.m.t.cs and Evolut.on 2009年第6期47卷 605-607页

作者： George W.C.HO Shek.shing m.R Richard m.k.SAUNDERS 812 Fu Yuen HouseChuk Yuen South EstateHong KongChina Ying Wa College Hong KongChina Division of Ecology and Biodiversit. School of Biological SciencesThe University of Hong Kong

Populat.ons of t.ism.a t.nt.culat.(Burm.nniaceae t.ibe t.ism.eae) are described and illust.at.d from.t.i m. Shan in Hong k.ng,sout.ern *** represent. t.e first.report.of t.e genus and t.ibe from.cont.nent.l China.

关键词： Burm.nniaceae Hong k.ng new record t.ism.aceae t.ism.a t.nt.culat.

Prognost.c value of alcohol consum.t.onand som. ot.er diet.ry habit. for survival in a cohort.of Chinese m.n wit. lung cancer

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Chinese Journal of Cancer 2017年第7期36卷 298-305页

作者： Went.o Li Lap Ah t.e Joseph S.k.Au k.i shing Yu Feng Wang Ignat.us t.k.sun Yu JC School of Public Healt. and Prim.ry Care The Chinese University of Hong Kong4F School of Public Health and Primary CarePrince of Wales Hospital Depart.ent.of Clinical Oncology Hong Kong Adventist Hospital

Back.round:Alcohol consum.t.on and som. ot.er diet.ry habit. are t.ought.t. be associat.d wit. lung cancer ***,t.e effect. of t.ese habit. on lung cancer prognosis have been st.died *** purpose of t.is st.dy was t. address t.ese gaps in ***:We st.died a cohort.of 1052 Chinese m.n in Hong k.ng who were diagnosed wit. prim.ry lung *** proport.onal hazards m.dels were used t. det.rm.ne t.e prognost.c values of consum.t.on of alcohol,fresh fruit. or veget.bles,m.at.and fried or preserved ***:Com.ared wit. never drink.rs,m.n who drank.alcohol 1-3 days per week.had a m.re favorable lung cancer prognosis(hazard rat.o[HR]:0.82,95%confidence int.rval[CI]0.68-0.97);however,t.is survival advant.ge was not.significant.in m.n who drank.alcohol m.re frequent.y(HR:0.91,95%CI 0.73-1.14).Com.ared wit. m.n who consum.d preserved or fried food only occasionally,m.n who consum.d t.ese foods frequent.y had a higher risk.of lung cancer m.rt.lit.(HR:1.20,95%CI 1.00-1.42).Conclusions:Occasional consum.t.on of alcohol was a favorable survival fact.r for Chinese m.n wit. lung ***,t.is survival benefit.did not.exist.for frequent.drink.rs of *** m.n wit. lung cancer who were frequent.consum.rs of fried or preserved food had a worse prognosis t.an t.ose who consum.d t.ese foods only occasionally.

关键词： Diet.ry habit. Alcohol Lung cancer Prognosis Epidem.ology

Derivat.ons on t.e Algebra of Operat.rs in Hilbert.C~*-m.dules

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Act. m.t.em.t.ca Sinica,English Series 2012年第8期28卷 1615-1622页

作者： Peng t.ng LI De Guang HAN Wai shing t.NG Depart.ent.of m.t.em.t.cs Nanjing University of Aeronautics and Astronautics Depart.ent.of m.t.em.t.cs University of Central Florida Depart.ent.of m.t.em.t.cs National University of Singapore

Let.m.be a full Hilbert.C＊-m.dule over a C＊-algebra A, and let.End^（.A4） be t.e algebra of adjoint.ble operat.rs on m. We show t.at.if A is unit.l and com.ut.t.ve, t.en every derivat.on of End＊A（m. is an inner derivat.on, and t.at.if A is a-unit.l and com.ut.t.ve, t.en innerness of derivat.ons on ＂com.act. operat.rs com.let.ly decides innerness of derivat.ons on EndA（m.. If .4 is unit.l （no com.ut.t.vit. is assum.d） such t.at.every derivat.on of A is inner, t.en it.is proved t.at.every derivat.on of EndA（Ln（A）） is also inner, where Ln（A） denot.s t.e direct.sum.of n copies of A. In addit.on, in case A is unit.l, com.ut.t.ve and t.ere exist.xo,yo ∈m.such t.at.〈xo,yo〉 = 1, we charact.rize t.e linear A-m.dule hom.m.rphism. on EndA（m. which behave lik. derivat.ons when act.ng on zero product..

关键词： Derivat.ons inner derivat.ons C*-algebras Hilbert.C*-m.dules