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PASSAGE,BLOCKADE,SINK AND SOURCE OF A PLANAR DYNAMICAL SYSTEM

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Chinese Annals of Mathematics,Series B 1992年第3期13卷 257-265页

作者：叶彦谦 Department of Mathematics Nanjing UniversityNanjing Jiangsu 210008China.

The author defines passage,blockade,sink and source of a plane multiply-connectedregion G with respect to a smooth dynamical *** theorems on the non-existenceor existence of closed orbits,and the existence of a passag... 详细信息

关键词： passage SOURCE erior stated dynamical multiply 二忍 outer triangle shaded

The Effects of Shade Tree Types on Light Variation and Robusta Coffee Production in Vietnam

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Engineering（科研） 2015年第11期7卷 742-753页

作者： Nguyen Van Long Nguyen Quang Ngoc Nguyen Ngoc Dung Paul Kristiansen Isa Yunusa Chris Fyfe The Black Pepper Research & Development Centre Pleiku City Vietnam The University of New England Armidale NSW Australia

Vietnam is well-known as the second largest global coffee producer and the largest worldwide exporter of Robusta coffee. However, the Robusta coffee sector in Vietnam is facing many problems, including low quality, high external inputs and water shortages as a result of shade tree eradication. A six-month research project was conducted that focused on effects of shaded tree types on variation of light intensity and aspects of Robusta production. Three shade tree species at different planting densities and shade provision were investigated, including 46 trees of Durian ha–1 (14% shade), 35 trees of Sennaha–1 (17% shade), and 60 trees of Leucaena ha–1 (34% shade), and unshaded site (Open) was used as a control. The study found that light intensity declined 50% with Durian, 58% with Senna and 60% with Leucaena compared with the Open site (2096 μmol?m–2?s–1). Within the coffee canopy, a significant decline in light intensity was observed from the top of the canopy to the bottom. The percentage of light at the middle (90 cm above ground) and bottom (30cm) levels of the coffee canopy was declined by 81% and 88% respectively for the Open site, and 86% and 92% for the Leucaena site. There were no differences in the number of flowers branch–1 tree–1 and fruit set between shaded and unshaded coffee sites. However, a significant difference in first fruit drop was observed.

关键词： Robusta Coffee shaded Coffee Light Intensity Coffee Production Vietnam

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HOPES IN THE AIR

城市漫步（全国英文版） 2015年第7期 70-73页

作者： Vladimir Gofolhua 不详

When I was a child I used to go up to the,roof of my parentis house,lay down and watch the kites in the sky.I was curious about these flying crafts and I remember my elder brothers told me that one of my uncles was a kite,making master,and that he could make tridimensional kites,plane-shaped kites,cube-shaded kites,three-cabes-together-shaped kites,human-shaped kites-anything you want,he could make,they said.

关键词： shaped remember shaded

Andrade Morettin Arquitetos Associados Itda，巴西

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钢结构 2007年第A8期22卷 26-28页

Design Concept:Essential Architecture Essential Architecture Using pre-fabricated steel solutions,this concept has been designed to block the intense light of the sun,while admitting air circulation at all *** ventilation is guaranteed by open interiors fitted with room dividers and ***,shaded platforms have been designed in the Brazilian housing *** buildings have been designed"glass free"to respond to condensation issues during the more humid months in Brazil.设计理念:基本建筑采用预制钢结构,这个概念设计强调在阻挡强烈阳光的同时使得空气畅通。采用开阔的室内装饰,如房间分隔以及百页窗来保证交叉通风。考虑巴西住房的传统,设计了开放的、带有遮阳篷的平台。建筑物的"无玻璃"设计,可以很好地解决在潮湿月份中的结露问题,见图1。

关键词：结露问题室内装饰 guaranteed 概念设计 housing shaded tradition

虹桥花瓣楼,中国上海(2013-2015)

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世界建筑导报 2016年第1期31卷 92-94页

作者： shen-photo(摄) 无不详荷兰mvrdv建筑规划事务所

该建筑融合了四个塔的顶端,透过其之间的阴影创造亲密的广场。该建筑的底层有大面玻璃,将有零售空间,同时使建筑物能够灵活地通过一个或多个不同租户使用的四个塔之间的顶楼功能连接。该建筑使用圆的形式,最大程度地减少外墙的数量,同... 详细信息

该建筑融合了四个塔的顶端,透过其之间的阴影创造亲密的广场。该建筑的底层有大面玻璃,将有零售空间,同时使建筑物能够灵活地通过一个或多个不同租户使用的四个塔之间的顶楼功能连接。该建筑使用圆的形式,最大程度地减少外墙的数量,同时也扩大视野。花瓣楼的悬臂,自遮阳形式是通过与楼上小开口的外观连接,以减少能源消耗,使之获得建筑节能三星级。白色的外墙,由极轻,但高度绝缘的GRC板,提供了一个微妙的移动网格膨胀,它到达地面变得更加开放,并减少了空调需求。

关键词：建筑节能功能连接能源消耗 shaded 城市热岛效应地下商业体量 ranking permeable subtle

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让我也来试试GRE数学题

英语沙龙（初级版） 2005年第9期 42-42,47页

作者：关涛

许多同学一进入高中阶段就有将来出国留学获得学位的愿望。GRE,TOEFL,IELTS,GMAT 就成了梦想出国留学学子们的第一道关卡。为了让同学们在中学阶段就逐步适应这类考题,本刊每期选登一些与你们水平接近的考题让你们热身。你有兴趣试试吗?

关键词： TOEFL 出国留学 IELTS 数学题 GRE 阴影区下目阴影部分瓜第 shaded

Total Reaction Cross Sections of ~6He at Intermediate Energies

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IMP & HIRFL Annual Report 2001年第1期 31-31页

作者： Chen Zhiqiang, Xiao Guoqing, Zhan Wenlong, Guo Zhongyan, Wang Meng, Sun ZhiyuLi Jiaxing, Tian Wendong, Wang Jiansong, Wang Wusheng, Mao RuishiBai Jie, Hu Zhengguo, Chen Lixin and Li Chen

In order to reveal information on the details of the halo structure of the^6He,the total reaction cross section of^6He on^(28)Si target at intermediate energies have been performed at RIBLL~[1]of *** primary beam 60 MeV/u^(13)C was provided by HIRFL,bombarding the Be target(4 mm in thickness).The derector stack is composed by 7 pieces of Si derectors and a CsI(Tl)scintillator veto detector.

关键词： Intermediate details stack pieces relativistic Gupta sections private shaded Suzuki

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你的萤火虫

疯狂英语（初中天地） 2014年第12期 7-7页

作者： Ben Cocks 鱼又