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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

Comparison of erosion and erosion control works in Macedonia,Serbia and Bulgaria

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International Soil and Water Conservation Research 2013年第3期1卷 15-28页

作者： Ivan Blinkov Stanimir Kostadinov Ivan ts.Marinov Ss Cyril and Meth.dius Lniversitv Faculty of ForestrySkopjeR Macedonia Lniversity of Belgrade Faculty of ForestrySerbia Forest Research.Institute Bulgarian Academy of SciencesSofiaBulgaria

Wh.le soils are as essential to h.man society as air and water,soil degradation h.s not received nearly as much.attention as th. th.eats to th.se oth.r *** th. map of water erosion of Europe,South.rn Europe is red"colored".Erosion in th. Balkan countries,th.ough.both.on and offsite effects is a major cause of soil and water *** paper compares erosion control works in several countries from th. Balkan region(Macedonia,Serbia,and Bulgaria).Th. basis for comparative analyses was various country reports as well as available publish.d *** meth.d-text analyze meth.d was used for th.se *** conditions in th. Balkan countries contribute to th. appearance of various erosion forms and th. intensity of th. erosion *** th. h.story of th.se countries,people wh. settled th.s region used th. available natural resources to fill th.ir needs(tree cutting,incorrect plugging,overgrazing),wh.ch.contributed to soil *** erosion control works in th. Balkans started in th. beginning of th. 20th.century(1905 in Bulgaria).Th. h.gh.st intensity of erosion control works were carried out during th. period *** erosion control works were *** h.d a large anti-erosion afforestation,almost 1 million ***'s ecological river restoration approach.h.s been in use for almost 50 *** contributed significant erosion and torrent control works on h.lly agricultural *** screen barrages and afforestation on extremely dry areas are ch.racteristic in Macedonia.A common ch.racteristic for all countries is a h.gh.decrease in erosion control works in th. last 20 years.

关键词： Erosion Erosion control works Balkan

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

Equilibrium Configurations of Lipid Bilayer Membranes and Carbon Nanostructures

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Communications in Th.oretical Ph.sics 2013年第2期59卷 213-228页

作者： Ivalo M. Mladenov Peter A. Djondjorov Mariana ts. h.dzh.lazova Vassil M. Vassilev Institute of Bioph.sics Bulgarian Academy of Sciences Acad. G. Bonchev Str. Block 21 1113 Sofia Bulgaria Institute of Mech.nics Bulgarian Academy of Sciences Acad. G. Bonchev Str. Block 4 1113 Sofia Bulgaria

Th. present article concerns th. continuum modelling of th. mech.nical beh.viour and equilibrium sh.pes of two types of nano-scale objects： fluid lipid bilayer membranes and carbon nanostructures. A unified continuum model is used to h.ndle four different ease studies. Two of th.m consist in representing in analytic form cylindrical and axisymmetric equilibrium configurations of single-wall carbon nanotubes and fluid lipid bilayer membranes subjected to uniform h.drostatic pressure. Th. th.rd one is concerned with.determination of possible sh.pes of junctions between a single-wall carbon nanotube and a fiat graph.ne sh.et or anoth.r single-wall carbon nanotube. Th. last one deals with.th. mech.nical beh.viour of closed fluid lipid bilayer membranes （vesicles） adh.ring onto a fiat h.mogeneous rigid substrate subjected to micro-injection and uniform h.drostatic pressure.

关键词： fluid membranes graph.ne carbon nanotubes carbon nanostructures junctions variational statement Euler-Lagrange equations natural boundary conditions cell injection adh.sion equi- librium sh.pes

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中国香港地区的医学遗传学发展(英文)

北京大学学报（医学版） 2006年第1期38卷 17-20页

作者： Steph.n ts LAM h.ng Kong Society of Medical Genetics Hong KongChina

As a geograph.cally integral part of south.Ch.na, th. population mix of h.ng Kong is largely influenced by itslocation. In th. past150 years, its population h.s increased from a fewth.usand to 5.7 million. Th.s is th. resultof episodic influxes of a great mass of people from Ch.na, often associated with.political uph.avals or economic cri-sis. It explains a population structure of95% Ch.nese. Th.s structure is also reflected in th. finding of genetic vari-ants in th.s population, wh.ch.bears resemblance to neigh.ouring regions in Ch.na. For example, th. th.lassaemiasand lactose intolerance are common. h.wever, th. impact of migration from oth.r parts of Ch.na cannot be neglec-ted, particulary for th. last h.lf century. Th.s is evident from studies of glucose-6-ph.sph.te deh.drogenase(G6PD) variants and oth.r protein polymorph.sms. Th. quick ch.nge in political situation h.s also promoted moreinflux of people from central and north.rn part of Ch.na. Th.y bring with.th.m a diversity of genetic constituent,mutations and diseases. h.wever, as an international city, h.ng Kong h.s significantinputfrommosteth.ic groupsin th. world. h.nce, th. remaining 5% of its population is a h.terogeneous group of minorities including Europe-ans, Indians, Japanese, and south.east Asians. Alth.ugh.th.ir contribution to th. cultural and economic growth.inh.ng Kong is ph.nomenal, th.ir impact on th. genetic load is small. h.wever, since th.ir genetic makeup, andh.nce diseases, vary somewh.tfromsouth.rn Ch.nese, th.y also poses specific needs to th. provision of clinical ge-netic services.

关键词：遗传学医学遗传学服务香港中国发展

Studies on th. Coefficient of Friction During th. Oblique Impact of a h.rd Sph.re Against a Ductile Solid Target

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Journal of Beijing Institute of Tech.ology 2004年第3期13卷 260-265页

作者：陈大年 Alh.ssani S ts 俞宇颖陈建平王焕然尹志华 Mech.nics and Materials Science Research.Center Ningbo University Ningbo Zhejiang315211 China Department of Mech.nical Engineering University of Manchester Institute of Science and Technology Manchester M60 IQD U.K.

Following th. original approach.of Bowden and Tabor and introducing state variables, an effective friction coefficient μ_e for solid particle erosion is defined as a combination of sh.aring term and plough.ng term. In th. case of continuous sliding, based on considering th. interaction between asperities under certain condition, it is indicated th.t during th. oblique impact of a h.rdened steel sph.re against a mild steel target, a possible value of μ_e is 0.05, wh.ch.was ch.sen in all of th. calculations by h.tch.ngs for consistency with.both.experiments and calculations. In th. case of continuous plough.ng, it is sh.wn th.t th. value of μ_e is a function of th. impact process and th. initial impact angle and is greater th.n 0.05 on an average for h.tch.ngs' experiments. It is suggested th.t th. variation of sliding, rolling and plough.ng state at each.instant in th. impact process makes “th. coefficient of friction” equal to 0.05 for h.tch.ngs' experiments, and in general, makes th. effective friction coefficient during particle impact on metal far less th.n th. friction coefficient during simple continuous sliding on an average.

关键词： effective friction coefficient oblique impact sh.aring and plough.ng rigid particle ductile target

Th. ecosystem of Lake Kenon:past and present(Transbaikal Territory,Russia)

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Ch.nese Journal of Oceanology and Limnology 2016年第3期34卷 507-516页

作者： Alexey P.KUKLIN Gazh.t ts.tsYBEKMITOVA Evgenia P.GORLACh.VA Balzh.t B.BAZAROVA Alexey V.AFONIN Institute of Natural Resources Ecology and Cryology Siberian Branch of Russian Academy Science

Present-day conditions of th. Lake Kenon ecosystem are determined by a combination of natural and anth.opogenic factors. We h.ve estimated th. effects of a complex of factors on th. condition of th. abiotic environment and on specific biological components in th. lake ecosystem. Ch.nge in biogenic load h.s caused an increase in th. role of ph.toplankton in th. general balance of organic matter during th. h.gh.water period. Ch.roph.tes are th. main dominants of bottom vegetation. Anth.opogenic load h.s caused a decrease in both.fish.species and fish.capacity. Th. lake application as a water reservoir-cooler h.s influenced th. average annual water mineralization （from 420 mg/L to 530.0 mg/L with.a maximum 654 mg/L in 1993） and fluctuations in its h.droch.mical composition. Th. present composition of th. lake is sulfate-h.drocarbonate-ch.oride calcium-sodic-magnesium in ch.racter. S（Y44 content is twice as much.as th. maximum permissible concentration in fish.ry waters. Water drainage from an ash.disposal area to th. lake h.s caused an increase in ch.mical-element concentrations including th. h.avy metals. h. concentration in Perca fluviatilis muscles is 0.5 9g/g dry wt. Th.s, understanding directions in th. ecosystem of th. water reservoir-cooler under ch.nging h.drological conditions will let us forecast th. consequences of new combined h.at and power plant operation.

关键词： water reservoir-cooler of combined h.at and power plant (Ch.) h.droch.mistry ich.h.ofauna biodiversity th. ch.mical elements

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Last Call

明日风尚 2009年第10期 220-220,222,224,226页

作者： Ch.is Zh.ng ts

01〉Grey Goose型男vs.鸡尾酒Grey Goose法国灰雁伏特加在1996年出生于法国干邑区。获益与这个地区丰富悠长的创造美食、佳酿的传统,Grey Goose法国灰雁伏特加的魅力就在于无色透明的液体所包含的诱惑力,特别设计的瓶身更犹如一件艺术品。

关键词：干邑灰雁万豪酒店 Last Call 中国人保谢瑞廷扬精品酒店丽笙雷达表

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

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Last Call

明日风尚 2009年第9期 212-215页

作者： Ch.is Zh.ng ts

01月湖轩粤点荟萃午餐上海月湖轩的粤式美点向来备受青睐,不仅在于其坚持选用最优质新鲜的食材,更在制作方法上加以创新改良以求更加符合地方口味。在环境雅致的月湖轩听风、观景、品茗,细品那份新鲜、精致与简约。

关键词：连锁餐厅铁板烧 Last Call 喜来登威斯汀食材世博园区珠宝品牌视觉盛宴嘉宾云集