首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
H.o.l.l.a.n.d 荷兰Hope our love lasts and never dies.希望我们的爱永恒不变。I.t.a.l.y. 意大利I trust and love you. 我相信你并且爱你。F.r.a.n.c.e. 法兰西Friendships remain and never can end.友谊永固。C.h.i.n.a. 中国Come here I need affection. 来这,我需要爱!N.e.p.a.l. 尼泊尔Never ever part as lovers. 像情人一样,永不分开。I.n.d.i.a. 印度I nearly died in adoration. 我差点在狂爱中死去。T.h.a.i.l.a.n.d. 泰国Totally happy always in love and never dull. 完全快乐,时时刻刻蜜运中不会无聊。M.a.n.i.l…  相似文献   

2.
展讯信息     
《科技潮》1998,(8)
时间8 .10~8.138 .1!~8.148 .12~8.168 .12~8.158 .12一8 .158 .14~8.198 .17~8.258 .18~8.218 .19~8.238 .19一8.238 .23~8.268 .26~8.298 .27~8.308 .28~9.018 .28~9.028 .29一9.049 .01一9.以9 .01一9.以9 .02一9.059 .03一9.伪9.以一9 .089.伪一9.伪9 .07~9.139 .08~9.119  相似文献   

3.
中华人民共和国外交部http:∥WWW.fmprc.gov.cn中华人民共和国国家发展计划委员会http:∥WWW.sdpc.gov.cn中国人民共和国国家经济贸易委员会http:∥www.setc.gov.cn中华人民共和国教育部http:∥WWW.moe.edu.cn中华人民共和国科学技术部http:∥www.most.gov.cn中华人民共和国财政部http:∥www.most.gov.cn/index.html中华人民共和国建设部http:∥www.cin.gov.cn/中华人民共和国铁道部http:∥www.chinamor.cn.net中华人民共和国信息产业部http:∥www.mii.gov.cn中华人民共和国农业部http:∥WWW.mii.gov.cn中国农业机械化信息网http:∥www.amic.agrl.gov.cn中国乡镇企业信息网http:∥www.cte.gov.cn农业部饲料工业中心  相似文献   

4.
采用Merrifield多肽固相合成法,合成了促性腺激素释放激GhRH,即PGlu.His.Try.Ser.Tyr.Gly.Leu.Agr.Pro.Gly.NH2以及类似物[D-Ala^6][去Gly.NH2^10]GhRH乙基酰胺,即PGlu.His.Try.Ser.Tyr,D-Ala.Leu.Arg.Pro.NH-C2H5和[Arg^2]GhRH,即PGlu,Arg,Try.Ser.Tyr.Gly.Leu.Arg.Pro.Gly.NH2并得到纯品。  相似文献   

5.
抱茎花旗杆(新组合) Dontostemon eiegans Maxim. var. semiamplexicaulis (H. L. Yang)H. L. Yang et M. S. Yan, comb. nov. ——D. semiamplexicaulis H. L. Yang in Journ. NW. Teach. Colleg. (Nat. Sci. S1:38. 1988) A D. elegans folio differt semiamplexicaulis floribus parvis (Petalis 5~7mm). Gansu (甘肃): Minqin (民勤), Huaeryuan (花儿园). Gobi, alt. 1000m. 12. Jun. 1974.  相似文献   

6.
1.刺通草 Trevesia palmata (Roxb.) Vis.in Mem. Acad. Torin 2(4):262. 1842; Rehd. in Journ. Arn. 15: 113. 1934; Li in Sargentia 2:13. 1942; Hoo et Tseng in Fl. Reipub. Popul. Sin. 54:10. 1978; Feng et Y. R. Li in Fi. Yunna. 2:417. 1979; C. B. Shang in Journ. Nanjing Inst. Fores. 2:15. 1985—Gastonia Plamata Roxb. in Hort. Bengal. 3311. 1814, nom. nud. & Fl. Ind. ed 2(2):407, 1832—Fatsia cavalerieri Levl., Bull. Acad. Ceogr. Bot.24:144. 1914 & Fl.Kouy-Tcheou 34. 1914-Brassaiopsis papayoides Hand.-Mazz. in Akad. Wiss. With. Math.-Nat. KI.61:120. 1925 & Symb. Sin. 7:693. 1933. 凭证标本:望谟,贵州队2207、张秀实等66—859:册亨,贵州队2657、安顺队198;兴义、安顺队877、878。分布:广西北部、云南南部。本种为灌木或小乔木,具刺;叶片大,边缘5—9掌状深裂,裂片卵状长圆形或披针形,先端渐尖或钝头;圆锥花序大,各部被锈色绒毛;伞形花序具花数十朵至近百  相似文献   

7.
一、木蓼属研究简史: 本属是Linnaeus于1753年创立的。后来Ledeb.(Fl.Alt.2:1830),Jaub.et Spach(I11.P1.Orient.2:1844-1846),Ledeb.(F1.Ross.3:1846-1851),Bnuge(inMem.Acad.St.Petersb.Sav.Etrang.7:1852),Meisn.(in DC.Prodr.14:1857),Loz.-Lozinsk.(in Bull.Gard.Bot.Prim.URSS 26:1927),Крыл.(Фл.Зап.Сйб.4:1930),Н.В.Павл.(вфл.СССР 5:1936),Kitag.(in Rep.First Sci.  相似文献   

8.
报道了浙江蔷薇科植物研究的若干新发现:1)接受Rubus linearifoliolus和R.linearifoliolus var.yanshanensis(Z.X. Yu et W.T. Ji) Y.F. Deng作为光滑悬钩子和铅山悬钩子的合法名称,前者在浙江无分布点;2)基于遂昌悬钩子R.tsangii Merr. var.suichangensis(P.L. Chiu ex L. Qian et X.F. Jin) Z.H. Chen et F.Y. Zhang的茎与小枝、叶片两面、花梗、花萼裂片外面均密被长腺毛,中脉和侧脉在叶片上面不明显下陷,雌蕊和果实被腺毛等而与光滑悬钩子明显不同,将其提升为种级,即R.suichangensis(P.L. Chiu ex L. Qian et X.F. Jin)Z.H. Chen et Ju L. Liu; 3)描述了粉花柯氏梨Pyrus koehnei Schneid. f.roseiflorus Z.H. Chen, H.F. Xu et F.G. Zhang和重瓣铅山悬钩子Rubus linearifoliolus var.yanshanensis f.semiplenus Z.P. Lei, W.Y. Xie et Z.H. Chen 2个新变型,并附彩色照片;4)报道了重瓣金樱子Rosa laevigata Michx. f.semiplena T.T. Yu et T.C. Ku为浙江分布新记录.  相似文献   

9.
1.敦煌小叶杨(新变种)Populus simonii Carr.var.dunhuangensis H.L.Yang et C.F.Fang,var.nov.西北师范学院学报 1982,(2):128,nom.nud.A varietate typica differt foliis angustayis longisque,elliptico-lanceolatisvei lato-lanceo-latis,5~8 cm.longis,1.5~2. 5 cm.latis,rhachidibus pubescentibus.Gansu:Dunhuang(敦煌),Prope Megaoku(莫高窟),habitat ad margines agrorum,15.Ⅵ.1979.H.L.Yang et al.No.79512(Typus in Herb.Inst.Desert.Res.Acad.Sin.con-servatur.)Haec varitas nova P.simonii var.liaotungensi(Wang et Skv.)Wang et Tung affinis,a  相似文献   

10.
内蒙古被子植物新记录分类群   总被引:1,自引:0,他引:1  
新记录属1 大戟科铁苋菜属Acalypha L.Sp.Pl.1003.1753.铁苋菜A.australis L.Sp.Pl.1004.1753;Pojark.in Fl.URSS 14:299.t.17.f.6.1949;中国高等植物图鉴2:605.图2939.1972;东北草本植物志6:34.图版13.图1—4.1977;辽宁植物志上册:1033.图版438:1—5.1988;河北植物志2:65.图967.1989.  相似文献   

11.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

12.
13.
Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications (up to 574.8 km/ h test speeds or 380 km/h commercial speeds) in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.  相似文献   

14.
Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to  相似文献   

15.
Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.  相似文献   

16.
为了有助于提高英文爱好者的个人情操、文化素养和学习兴趣,以及专业人员对英语学习和研究进行多途径的探索,本文通过一些精选诗歌的引证和分析,着重论述了喻类修辞法在英文诗歌中的运用其及效果。  相似文献   

17.
Tennessee Williams is considered as one of the most important American playwrights since World War II.The Glass Menagerie is his first successful drama,which describes a tragic situation of family and means to say that Man is unable to change the miserable life,no matter whatever means he try,This essay focuses on the analysis of the arrangement of the four main characters:Laura.Amanda,Jim and Tom to reveal the theme.Laura is fragile.Amanda is brave.Jim is vital.Tom is sensible.And all of them develop and try the different means to struggle against life,but fail tragically.With the evidence,the paper comes to conclusion naturally that Man is unable to change the miserable life,and he dooms to fail.  相似文献   

18.
The aim of this study is to investigate the diversity of Retama raetam root-nodule bacteria isolated from arid regions of Tunisia. Twelve isolates, chosen as representative for different 16S rRNA gene patterns, were characterized by 16S rRNA gene sequencing and phenotypic analysis. Isolates were assigned to Sinorhizobium, Rhizobium and Agrobacterium. Symbiotic properties of Sinorhizobium and Rhizobium isolates showed a large diversity in their capacity to infect their host plant and fix atmospheric nitrogen. Strain RK 22 identified as Rhizobium was the most effective isolate.  相似文献   

19.
正Recently,docking has been widely used to predict the binding-modes of protein-inhibitors,when the crystal complexes structure was absent.Most docking algorithms are able to generate a large number of probable conformations,it,however,is difficult to effectively evaluate these docking poses and identify the most reasonable bindingmode.In the present study,on the basis of the crystallographic data of human 3-hydroxy-3-methylglutaryl coenzyme  相似文献   

20.
介绍了WiMAX与Wi-Fi两种无线宽带接入技术,并对两者之间的关系及相互之间的影响做了对比及分析,并对WiMAX的关键技术进行了详细说明,最后对两者的联合组网方式做了简单的探讨。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号