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1.
树木的拍摄     
徐梅 《中国科技信息》2008,(5):157-158,160
树木与人类息息相关,不论自觉或不自觉。人们都意识到,这个世界用于呼吸的空气,环境地球的大气,以及培植未来生物的土壤,全都依赖于树木的存在。人们应该利用摄影去表现春.夏、秋、冬四季树木的形态,表达树木的个性,抒发对大自然热爱的情感,通过摄影活动唤起人们保护自然的意识。  相似文献   

2.
现代西方文明尽管已发展到一定程度,但社会对女性的歧视依然存在,女权主义团体的日益增多.试图从英语的词汇入手,分析英语词汇对女性的歧视和贬低.第一部分阐述英语词汇通常给人某种暗示,认为女人通常都是男人的一部分;第二部分则揭示英语词汇本身对女性的一种天生的敌意,它不断地歧视贬低女性.只要社会中的性别歧视未被消灭,语言中的歧视现象就永远不会消失.  相似文献   

3.
安登峰  和燕 《内江科技》2007,28(3):66-67
牛顿是一名伟大的科学家,在许多领域均有过创造性的成就,对社会的发展和历史的进步曾经作出杰出的不可磨灭的功绩.然而,后人在对其广泛深入的研究中却发现了牛顿令人遗憾的另一面,本文从牛顿生平、功绩、留下的遗憾三个方面对牛顿进行了分析研究,深刻反思了牛顿性格两极化的根本原因,对牛顿的成败给出了自己的结论,可供今天的科研工作者参考.  相似文献   

4.
随着科技的飞速发展和人们生活节奏的不断加快,对现代大型工程项目迫切需求加强风险管理,风险所致损失规模也越来越大,这些都促使科研人员和实际管理人员从理论上和实践上重视对大型工程项目的风险管理.  相似文献   

5.
面上项目是国家自然科学基金资助的主要项目类型,其经费额度约占整个研究项目总额度的60%。近年来,国家自然科学基金面上项目申请量快速增长,2007年申请量达到64827项,比2000年的21111项提高了207%。生命科学部2000年以来更是以年均约30%速度递增,从2000年的8860项增加到2007年的27460项。  相似文献   

6.
《发明与创新》2008,(3):53-53
据媒体报道,西班牙正在一些医院进行"手机医疗计划"的试验活动. 巴伦西亚市佩塞特医院1年以前开办了手机跟踪外科门诊病人的服务,试验通过手机增进医生与病人的接触,同时为完善病人的电子病历做补充.一名病人反映说:"医生通过手机问我感觉如何、是否发烧等,并给我提出不少建议.我感觉放心多了,因为我知道出了问题会有医生帮忙解决."  相似文献   

7.
年初,在美国举行的国际消费类电子产品展览会上,微软展区一台与众不同的个人电脑前聚集了很多人,这就是配备了触摸式显示屏的桌面电脑"Microsoft Surface".比尔·盖茨向与会者演示了Surface的概念,在演示过程中,他定制了一个虚拟滑雪板,并将其保存到Windows Mobile设备和WindowsLive Spaces中.  相似文献   

8.
有一座在全国颇具盛名的"专题景点",它就是浓缩着几千年经济、金融变革精髓的"钱币博物馆".它坐落在最佳观海点,风光绮丽,为英国驻厦门领事馆的官邸旧址.博物馆以展示闽台钱币文化为重点,供全世界各地的人参观,现辟有5个展厅,从先秦到民国,从贝币到四大货币体系,洋洋5000多个品种,穿越时空隧道,历经千年沧桑,可尽情饱览钱币历史长河中的朵朵多彩浪花.  相似文献   

9.
基于技术引进、消化吸收的自主创新困境及消解对策   总被引:3,自引:3,他引:0  
实现技术、经济的持续发展必须重视技术引进后的消化和吸收再创新.国家对于技术引进应有明确的战略目标,必须形成一套机制,有效地对国内企业实现激励、导向和制约的作用,促进企业技术引进后能够消化吸收进行自主创新.必须坚持制度创新,建立现代企业制度,使企业真正成为技术引进的主体、技术创新的主体.企业在引进技术时必须注重技术引进的先进性及本土化,技术引进后必须加大研发投入量并最终形成拥有自主知识产权的核心专利技术.  相似文献   

10.
城市污水处理工程设计是一个综合性极强的系统工程,涉及的学科多,相关部门多,其中任何一个环节不合理都会给工程设计带来影响和造成不同程度的损失.  相似文献   

11.
Pyrgophyllum (Gagnep.) T. L. Wu et Z. Y. Chen is a monotypic genus of Zingibera- ceae from China.  Originally, it was placed in Kaempferia as a subgenus by Gagnepain (1901), later transferred to Camptandra by Schumann (1904) and to Caulokaempferia by R. M. Smith. (1972).        In this paper, the authors suggest that the separation of Pyrgophyllum at generic rank is justified on cytological, morphological and anatomical evidence.  It is characterised by the large lamina-like bracts, which are rarely seen in Zingiberaceae.  The margin of each bract is ad- nate to the main axis of the inflorescence at the base and the lip is lobed.  Trichomes unicel- lular, stomata each with 4-7 lateral subsidiary cells, lateral veins are of three various types of vascular bundles: girder-shaped, semigirder-shaped and isolated. The pollen grains are spinecent. The basic chromosome number (x) is 21.       The type species, Pyrgophyllum yunnanensis (Gagnep.) T. L. Wu et Z. Y. Chen (Kaemp- feria yunnanensis Gagnep.), is only distributed in Yunnan and Sichuan provinces of China.    相似文献   

12.
 通过对我国北部各省区所产的杏Armeniaca vulgaris Lam.及野杏 A.vulgaris Lam.var. ansu(Maxim.) Yϋ et Lu的形态学比较研究结果表明,杏分类群存在较大的变异,在一些标本馆内被 鉴定为野杏的标本实际上包括了一个混杂的类群。本文对杏及野杏的描述作了修订,分出一个新种志丹杏A.zhidanensis C.Z.Qiao et Y.P.Zhu.  相似文献   

13.
When the genus  Yinshania Ma et Y.  Z. Zhao  was published,  it had only a single species, Y. albiflora Ma et Y.  Z.  Zhao which was indicated as the type of the genus (Acta Phytotax. Sin. 1979).  Y. Z. Zhao 155.  was indicated as the type specimen of Y.  albiflora. It is adequate to cite Y. albiflora Ma et Y.  Z. Zhao as the type of genus Yinshania Ma et Y. Z. Zhao. In a revision (Acta Phyto- tax.  Sin.  25(3): 204-219, 1987) Y.  H. Zhang made  a combintion,  Yinshania acutangula (O. E. Schulz) Y.  H. Zhang (=Cochlearia acutangula O. E. Schulz) and reduced Yinshania albiflora Ma et Y. Z. Zhao as a variety of Y. acutangula,i. e. Y. acutangula var. albiflora (Ma et Y. Z. Zhao) Y. H. Zhang. She is uncorrect, however, when she cited Y.  acutangula (O. E. Schulz) Y. H .  Zhang as the type of the genus Yinshania Ma et Y. Z. Zhao. It should be cited as follows: Yinshania Ma et Y. Z. Zhao      Typus generis: Yinshania albiflora Ma et Y. Z. Zhao (=Yinshania acutangula(O. E. Schulz) Y. H. Zhang var. albiflora (Ma et Y. Z. Zhao) Y. H. Zhang)  相似文献   

14.
中国毛茛科植物小志(十五)   总被引:1,自引:0,他引:1  
 在本文中澄清了一些错误鉴定;一些学名证实不能成立,成为异名;对偏翅唐松草的种下分类 群做出修订,并给出新的区别特征;做出锐棱铁线莲系的分种检索表;对渐尖铁线莲群各种的亲缘关 系进行了初步讨论;描述了1新系,3新种,3新变种,2新变型;做出1新组合,4新等级,并拟出1新名;报道了拳距瓜叶乌头、星果草和直梗高山唐松草的国外分布。  相似文献   

15.
Apostasioideae, a small subfamily of Orchidaceae, is largely distributed in tropical Asia with its northern limit extending to the Ryukyu Islands and south China. The first Chinese species of this subfamily was reported by E. D. Merrill (1927) based on a specimen collected from Hainan (McClure 9519, AMES), which he regarded as Apostasia wallichii R. Br. As later labelled by E. F. de Vogel, it is in fact identical with A. odorata Bl., a widespread spe- cies also found in southern Guangdong, Guangxi and Yunnan of China.  It was not until re- cently that the true A. wallichii was collected from southwestern Yunnan bordering on Burma, which is initially reported here.  In addition, an interesting new species, A. ramifera S. C. Chen et K. Y. Lang, is described from Hainan.       The only Chinese species of Neuwiedia has long been known as N. veratrifolia Bl. (of. Iconographia Cormophytorum Sinicorum 5: 602, t. 8034. 1976, and Flora Hainanica 4 180, t. 1078. 1977), which, however, was considered by de Vogel (1969) to be not found in China.  In de Vogel's revision, no Chinese taxon but a variety, N. zollingeri Rchb. f. var. singapureana (Baker) de Vogel, is cited with some doubt based on a specimen of Hainan (F. C. How 73122, in young fruit, AMES). N. zollingeri var. singapureana is in fact quite different from N. veratrifolia by having glandular hair, much shorter inflorescence and flattened filaments.  As recently pointed out by de Vogel and G. Barretto (in Journ. Taiwan Museum 37: 78. 1984), the plants found in Hongkong, as well as those in Guangdong and Yunnan, possess glandular hair and short inflorescence. They are identical with the Vietnamese species N. balansae Gagnep., which was reduced by de Vogel to a synonym of N. zollingeri var singapureana. E. F. de Vogel's suggestion seems to be acceptable except the varietal rank.  It is treated here as a se- parate species, N. singapureana (Baker) Rolfe, according to its fruit and hair characters.  Thus we have altogether one species of Neuwiedia and three species of Apostasia in China, including a new species and a newly recorded one.  相似文献   

16.
Wikstroemia anhuiensis D. C. Zhang  et X.  P. Zhang and W. monnula Hance var. xiuningensis D. C. Zhang et J. Z.  Shao of the family Thymelaeaceaeare described as new from Anhui Province, China.  相似文献   

17.
One new species and one new variety of genus  Plantago are describecd from China.  They are P. densiflora J. Z. Liu and P. arachnoidea var.  lorata J. Z. Liu.  相似文献   

18.
乌蒙杓兰及其近亲种   总被引:1,自引:0,他引:1  
 In addition to describing a new species, Cypripedium wumengense, as well as a new variety, C. bardolphianum var. zhongdianense,  nomenclatural and taxonomic notes are made on its allies and the division to which they belong.  They are ltrge]y found in the Hengduan Mountains in southwestern China, characterized by the absence of bract, havirg lip more or less covered with small wart-like outgrowths, and that as the capsule matures the scape becomes much elongated.  Six species of this group have hitherto been reported, of which, however, C. ebracteatum and C. nutans are regarded here as conspecific with C. fargesii and C. bardolphianum respectively. Thus, including the new taxa described here, it composes five species and one variety: C. bardolphianum W. W. Sm. et Farrer (var. bardolphianum and var. zhongdianense S. C. Chen), C. mic- ranthum Franch., C. fargesii Franch., C. margaritaceum Franch. and C. wumengense S. C. Chen.  They are all grouped here into the same section, Sect.  Trigonopedium (Franch.) Pfitz., the oldest legitimate name of this group in the rank of section.  相似文献   

19.
 此文包括了缢花沙参Adenophora contracta (Kitag.)  J.  Z.  Qu  et  Hong 和松叶沙参 A.pinifolia Kitag.两个种。在过去,前者曾被处理为石沙参的变种(A.polyantha Nakai var.contracta Kitag.)。本文通过对它的地理分布、植物体形态和细胞学特征的研究,发现它相当独特。所以,把它处理为种的等级A.contracta (Kitag.) J.Z.Qu. et Hong。后者,曾被洪德元(1983)处理为存疑种。在此被确认为独立的种。  相似文献   

20.
 In the present paper, we new species and two new varieties of Saxifragaceae and Rosaceae are  described   from  the  Hengduan Mountains.  They are Philadelphus lushui- ensis Ku et S. M. Hwang, Parnassia lanceolata Ku var. oblongipetala Ku, P. nubicola Wall.ex Royle var. nana Ku and Malus muliensis Ku.  相似文献   

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