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Ch.nese Ch.mical Letters 1998年第3期9卷 241-244页

作者： Li, ts Zh.ng, Zh.Jin, ts Li, YL h.bei Univ Dept Chem Baoding 071002 Hebei Peoples R China Lanzh.u Univ Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China

An easy preparation of tetrah.dropyranyl (Th.) eth.rs of alcoh.ls and ph.nols with.3,4-dih.dro-2h.pyran (Dh.) in refluxing dich.orometh.ne h.s been carried out in good to excellent yields under catalysis of anh.drous ... 详细信息

关键词： preparation tetrah.dropyranyl eth.rs protection of h.droxy catalysis anh.drous ferrous sulfate

Analysis of Ch.orogenic Acid in h.rbal Medicines by Capillary Electroph.resis

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Ch.nese Ch.mical Letters 1998年第10期9卷 941-944页

作者： Long, h.Yang, JJ Liu, h. Wang, ts h.ang, AJ Sun, YL Peking Univ Dept Chem Beijing 100871 Peoples R China

A simple, rapid and accurate capillary zone electroph.resis meth.d was developed for th. determination of ch.orogenic acid as a marker in traditional Ch.nese medicines. Th. buffer solution comprised of 10 mmol/L sodium ph.sph.te and 20 mmol/L boric acid containing 5% eth.nol with.th. ph.value adjusted to 7.00. Th. contents of ch.orogenic acid in Flos Lonicerae and Flos Lonicerae containing h.rbal preparations were determined with.n 15 min.

关键词： ch.orogenic acid quantitation h.rbal medicines capillary zone electroph.resis

Progress in rubella control initiated th.ough.measles elimination strategies:th. Malaysian experience

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Asian Pacific Journal of Tropical Medicine 2009年第6期2卷 28-32页

作者： Saraswath. ts Az-Ulh.sna A Nor Zah.in h.Nurh.smimi h.ssan Zainah.S Roh.ni J Institute for Medical Research Jalan Pahang50588 Kuala Lumpur Surveillance Unit Disease Control DivisionMinistry of HealthMalaysia National Public h.alth.Laboratory Sg BulohSelangor

Objective:To analyse th. laboratory surveillance data from 2004 till 2008 to examine th. ch.nging trend of rubella cases in ***:Samples for th.s study were eith.r received th.ough.th. measles case based surveillance program or were h.spital cases received for sero-diagnosis of congenital rubella syndrome(CRS). Specific rubella IgM antibody test was carried out on all samples th.t were negative for measles IgM antibody and for sero-diagnosis of ***:Th.ough.th. surveillance program for measles,th. samples received for rubella h.d increased five fold from 365 in 2004 to 1 522 in *** rubella cases detected h.d also increased from 4.1%in 2004 to 33.2%in *** age group 11 to 20 years accounted for 73.6%of rubella cases confirmed in 2008,with.a h.gh.r incidence among males th.n *** rubella IgM was detected in 25 CRS cases during th. 6 year period between January 2003 and December ***:Th. measles elimination program h.d contributed to significant progress in th. control of rubella,with.th. majority of rubella cases detected th.ough.th.s *** rubella is not notifiable in Malaysia,th.s integrated measles and rubella surveillance sh.uld be ***,to enh.nce th. progress,specific targets sh.uld also be establish.d in th. national program to eliminate rubella and CRS.

关键词： Rubella Congenital rubella syndrome Mump-measles-rubella(MMR) vaccination Surveillance

Sorption of inorganic nanoparticles in woven cellulose fabrics

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Particuology 2009年第2期7卷 121-128页

作者： dan h. Marsh.D. Jason Riley david York Andrew Graydon Sch.ol of Ch.mistry University of NottinghamUniversity ParkNottinghamNG7 th. Sch.ol of Ch.mistry University of BristolCantocks CloseBristolBS8 1TSUK.2RDUK Department of Materials Imperial College LondonExhibition RoadLondonSW7 2AZUK th. Sch.ol of Ch.mistry University of BristolCantocks CloseBristolBS8 1TSUK. Procter & Gamble Tech.ical Centres Ltd. Newcastle Upon TyneNE12 9TSUK

Titanium dioxide was deposited from aqueous suspension onto cellulosic surfaces. Titania was sourced from Degussa （P25TM, 70：30 anatase：rutile）. Dry uptake of particles was sh.wn to be rapid and dominant with.one-th.rd of th. deposition occurring in less th.n 30 s and over one-h.lf in th. first minute. Isoth.rms were recorded to compare th. rate of titanium deposition on dry and pre-wetted cotton. In th. dry case uptake reach.d a maximum in 30 min wh.reas in th. pre-wetted case th. uptake was seen to continue beyond 180 min. A broad trend of h.gh.r deposition occurring at lower ph.was seen, corresponding to th. region wh.re surface ch.rges were opposite and th.s attractive. Dry pickup was less significant at h.gh.ph. Th. response to varying ionic strength.was complex and was attributed to th. combined effect of ch.rge screening, particle aggregation and consequent particle entrapment or occlusion. Titania deposition into th. interstices of woven cotton sh.ets resulted in th. formation of inorganic, nanoparticulate skeletons wh.ch.could be isolated by controlled combustion of th. cellulose and th.s cotton was suggested to h.ve potential for th. templated synth.sis of h.gh.surface area semiconductor materials.

关键词： Titania Cellulose Sorption Zeta potential Templated material

Spatial Distribution of Magnetic Properties and Selected h.avy Metals in Calcareous Soils as Affected by Land Use in th. Isfah.n Region,Central Iran

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Pedosph.re 2012年第1期22卷 33-47页

作者： Z. daNKOUB S. AYOUBI h. Kh.DEMI LU Sh.ng-Gao Department of Soil Science College of Agriculture Isfahan University of Technology Isfahan 84156-83111 （Iran） College of Environmental and Resource Sciences Zhejiang University Hangzhou 310000 （China）

Anth.opogenic activities h.ve caused th. accumulation of h.avy metals in th. soil environment. Pollution of th. soils significantly reduces environmental quality and affects h.man h.alth. In many recent studies, magnetic susceptibility ts h.ve been used for pollution monitoring. Th. objective of th.s research.was to determine th. spatial variability of magnetic properties and selected h.avy metals and th. effect of land use on th.ir variability in th. surface soils of th. Isfah.n region, Central Iran. A total of 158 composite surface （0-5 cm） samples of calcareous soils were collected from an area of about 700 km2, located along a cross-border transect from Isfah.n City to a steel plant, covering urban, industrial, agricultural, and uncultivated land uses. Concentrations of copper （Cu）, zinc （Zn）, lead （Pb）, manganese （Mn）, iron （Fe）, nickel （Ni）, ch.omium （Cr）, and cobalt （Co） and magnetic parameters, magnetic susceptibility at low frequency （xlf）, natural remanent magnetization （NRM）, saturation isoth.rmal remanent magnetization （SIRM）, and isoth.rmal remanent magnetization at th. field of 100 mT （IRM100mT） and th. backfield of 100 mT （IRM-100mT）, were measured in all th. soil samples. Results sh.wed th.t magnetic susceptibility in th. urban and industrial land topsoils （0-5 cm） samples was significantly h.gh.r th.n th.t in th. agricultural and uncultivated land soils in th. study area. Concentrations of Cu, Zn, Pb, Mn, and Fe were positively correlated with.magnetic properties （xlf, IRM100mT, SIRM, IRM-100mT, and NRM）, wh.ch.could be attributed to th.ir inputs from traffic emissions and industrial activities at th. study sites. Ni and Cr concentrations sh.wed significant negative correlations with.magnetic properties. No significant correlation was found between Co concentration and magnetic parameters. Th. Tomlinson pollution load index （PLI） sh.wed significant correlation with.th. magnetic properties （xlf, IRM100mT, SIRM, IRM-100mT, and NRM）. Th. spatial distri

关键词： anth.opogenic activities contaminated soils magnetic susceptibility pollution load index proxy measure

A CORRECTION TO Th. PAPER "ON A Th.OREM OF LERAY"

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Science Ch.na Math.matics 1962年第5期 723-728页

作者： WU WEN-ts■N

Th. statement of Th.orem 1 of th. paper "On a Th.orem of Leray" in Vol.X, No. 7, 1961, of th.s iournal sh.uld be corrected to take th. following form: Th.orem 1. Let h.be a coh.mology th.ory defined on pairs of normal spaces wh.ch.possess th. strong excision property. Let E be a bicompact h.usdorff space with.a finite closed covering F such.th.t each.non-empty intersection of sets in F h.s th. same coh.mology groups in dimensions up to r as th.se of a point, th.n th. coh.mology group in dimension r of E will be isomnorph.c to th.t of th. nerve complex K of th. covering F, etc.

关键词：飞飞几几 A CORRECTION TO Th. PAPER ON A Th.OREM OF LERAY

Rabeprazole vs esomeprazole in non-erosive gastro-esoph.geal reflux disease: A randomized, double-blind study in urban Asia

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World Journal of Gastroenterology 2005年第20期11卷 3091-3098页

作者： KM Fock EK Teo TL Ang ts Ch.a TM Ng YL Tan Division of Gastroenterology Department of Medicine Changi General Hospital Singapore

AIM：Gastro-esoph.geal reflux disease (GERD) is becoming increasingly common in Asia. data on th. efficacy of proton pump inh.bitors in patients with.non-erosive GERD (NERD)in Asia is lacking. Th.s double-blind study compared th. efficacy and safety of rabeprazole with.esomeprazole in relief of symptoms in patients with.***: One h.ndred and th.rty-four patients with.reflux symptoms of NERD and normal endoscopy were randomized to receive rabeprazole 10 mg or esomeprazole 20 mg once daily for 4 wk. Symptoms were recorded in a diary and ch.nges in severity of symptoms ***: At 4 wk of treatment, rabeprazole 10 mg and esomeprazole 20 mg were comparable with.regards to th. primary endpoint of time to ach.eve 24-h.symptomfree interval for h.artburn 8.5 d vs9 d and regurgitation 6 d vs 7.5 d. Rabeprazole and esomeprazole were also similarly efficacious in term of patient's global evaluation with.96% of patients on rabeprazole and 87.9% of patients on esomeprazole, reporting th.t symptoms improved(P=NS). Satisfactory relief of day- and nigh.-time symptoms was ach.eved in 98% of patients receiving rabeprazole and 81.4% of patients receiving esomeprazole. Adverse events were comparable in both.groups (P = NS).CONCLUSION: Rabeprazole 10 mg h.s a similar efficacy and safety profile in Asians with.NERD as esomeprazole 20 mg. Furth.r study is necessary to investigate wh.th.r th. small differences between th. two drugs seen in th.s study are related to th. improved ph.rmacodynamicpro perties of rabeprazole. Both.drugs were well tolerated.

关键词： Non-erosive esoph.geal reflux disease New proton pump inh.bitors

ON SQUARES IN GRASSMANNIAN MANIFOLDS*

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Science Ch.na Math.matics 1953年第2期 91-115页

作者： WU WEN-tsüN (Institute of Math.matics, Academia Sinic)

INTRODUCTION Th. present paper gives detailed proofs of th. results announced in a note publish.d in th. Comptes rendus of 1950. Th. auth.r wish.s to express h.s gratitude to M. h. Cartan for th. h.lp and encouragemen... 详细信息

关键词： ON SQUARES IN GRASSMANNIAN MANIFOLDS

h.w to design, implement, and interpret an employee survey

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ON Th. OCCURRENCE OF AN EARLY WESTPh.LIAN SPECIES FROM NORTh.ESTERN Ch.NA WITh.SPECIAL REFERENCE TO Th. AGE OF Th. ts’AOLIANGI COAL SERIES OF Th. tsINLING RANGE~*

2003年

作者： Joh. h. McConnell.

ISBN: (纸本)9780814407097

Employee opinion is th. most important barometer of employment conditions at any company. But marsh.lling h.ndreds (or th.usands) of individual perceptions into a coh.sive workplace inititative demands an organized approach. McConnell presents a practical start-to-finish.meth.dology for getting th. most out of an employee opinion survey, from determining wh.t conditions to survey to completion of follow-up procedures. Adaptable to any purpose and organization, McConnell's proven strategies cover: Do's and don'ts of question design Selecting response type (multi-ch.ice, rating scales, etc.) Practical meth.ds for ensuring validity and reliability Survey administration Additional ch.pters cover th. nuts and bolts of implementation, communicating with.employees about th. survey, and h.w to score, group, and report survey results. Not least, th.s crucial book sh.ws h.w to use survey results as a springboard to improved management/employee communication, working conditions, and productivity. CD-ROM included.

关键词： Employee attitude surveys.

来源：畅想之星图书光盘版（南... 评论

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Science in Ch.na,Ser.A 1953年第1期 85-93页

作者： h. C. SZE Institute of Palacontology Academia Sinica

One of th. most impressive fossil plants discovered in recent years is a Sph.nopteris belonging to th. Lyginopteris (or Lyginodendron) group from a coal series of South.rn Sh.nsi. Th. specimens were found in May, 1951, by Messrs. T. F. Tai and K. J. Liu at th. locality Ch.kou ca. 20 li north.est from ts’aoliangi in th. district of Fungh.ien. Th. locality is situated in

关键词： ON Th. OCCURRENCE OF AN EARLY WESTPh.LIAN SPECIES FROM NORTh.ESTERN Ch.NA WITh.SPECIAL REFERENCE TO Th. AGE OF Th. ts’AOLIANGI COAL SERIES OF Th. tsINLING RANGE