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Empirical Analysis of Influencing Factors in Collaboration of Primary Industry and Tertiary Industry in Dujiangyan City, Sichuan Province, China  [cached]
Qizhi Yang,Fuhui Yan,Feng Ye
International Journal of Business Administration , 2012, DOI: 10.5430/ijba.v3n1p84
Abstract: Collaborative development of the thrice industrial is an important means for change of the economic development pattern on the basis of following the rule of industrial structure vicissitude. As an important water source in Chengdu City and an important ecological preservation area which has abundant tourism resources, industrial development of this region is relatively stable. It is a significant task of the municipal government of Dujiangyan to develop the primary industry and the tertiary industry in a collaborative way, which has great significance to effectively resolve the “three rural” issues in Dujiangyan and to promote social and economic development of Dujiangyan. This article makes sorting on important factors influencing the primary industry and tertiary industry in Dujiangyan through an empirical analysis and puts forward corresponding policies and suggestions.
A teaching tool: A key to selected Fagaceae
Fantz, P.R.
Vulpia , 2003,
Abstract: Commentary on teaching identification of oaks, beeches and chestnuts is presented along with a key to selected Fagaceae utilized as a teaching tool for teaching students ornamental plant identification at North Carolina State University.
An Analysis of Synergy Degree of Primary-Tertiary Industry System in Dujiangyan City  [cached]
Qizhi Yang,Fuhui Yan,Feng Ye
International Journal of Business and Management , 2011, DOI: 10.5539/ijbm.v6n8p291
Abstract: According to the characteristics of complex system and the synergetic theories, authors establish the order parameters for the primary industry system and the tertiary industry system, using order parameters describing the order degree of industry system, constituting the model assessing the synergy degree of the primary-tertiary complex industry system, analyzing the impact factor of system synergetic development, and studying the synergy degree of primary-tertiary industry system in Dujiangyan City. Studies show that: there is a positive synergy degree in the primary-tertiary industry system in Dujiangyan City, but the synergy degree is low. No efficient synergetic relationship exists between the two industry systems. By means of adjusting the employment structure, focusing on the development of special industries of agriculture, and developing the tertiary industry, especially the tourism industry as the leading industry, we can improve the synergy degree of primary-tertiary industry system.
THE DISTRIBUTION OF FAGACEAE IN CHINA AND ITS RELATIONSHIP WITH CLIMATIC AND GEOGRAPHIC CHARACTERS
中国壳斗科的地理分布及其与气候条件的关系

刘茂松,洪必恭
植物生态学报 , 1998,
Abstract: Fagaceae is one of the most important families in temperate and
宽顶堰水力试验研究  [PDF]
刘建新,程昌华
重庆交通大学学报(自然科学版) , 1995,
Abstract: :?在水道工程的建设中,各种类型的堰利用率很高.堰的坝型和坝高的选择直接影响到过水能粒本文通过宽顶堰的模型试验,再现越障水流现象并对过堰水流流型进行探讨,以便为水利工程设计提供可靠的依据.
Evaluation on Land Use Planning Based on Ecosystem Services Value Change: A Case of Dujiangyan City  [cached]
He Ge
Advances in Natural Science , 2012, DOI: 10.3968/j.ans.1715787020120502.1900
Abstract: This paper aims at evaluating the implementationperformance of the LUP of Dujiangyan city based onthe total ESV change. The finding is that the total ESVincreased only 192.76 million yuan over the period ofthe LUP implementation. The results show that the LUPachieve a good performance in maintaining ESV. Key words: Land use change; Ecosystem servicesvalue; Dujiangyan city
翼形堰应用于过水土石坝控制堰的试验研究  [PDF]
唐新军,杨京,李晓庆,凤炜
人民黄河 , 2007,
Abstract: ?对于翼形堰应用于过水土石坝的过流能力进行了试验研究,对其流量系数的变化规律及其主要影响因素进行了初步分析.试验结果表明:在坝体结构和水头条件都相同的情况下,翼形堰的流量系数比梯形堰的大;在上下游坝坡确定的情况下,流量系数随c值的减小而增大;上下游坝坡较陡时,翼形堰具有较大的流量系数.介绍了翼形堰用于过水土石坝时结构尺寸的确定方法.
地震诱发的堰塞湖初步研究  [PDF]
聂高众,高建国,邓砚
第四纪研究 , 2004,
Abstract: :由于地震引发山体滑坡并堵塞河道形成的湖泊称为地震堰塞湖。据统计,我国自1856年以来,共计产生141个地震堰塞湖,按照其形成和造成的灾害来看,堰塞湖可以分为3类:高危型堰塞湖、稳态型堰塞湖和即生即消型堰塞湖。高危型堰塞湖由于蓄水量大、落差大,往往在形成后几天至几年后会被冲垮,形成严重的地震滞后次生水灾。稳态型堰塞湖(亦称“死湖”),可以存在很长时间且湖积水量很大。即生即消型堰塞湖为震时形成的短时堰塞湖,很快会被后来累积的水体冲毁,一般危害不大。如果简单的用时间来区分堰塞湖的类型,那么在一天或者几天内溃决的是即生即消型堰塞湖;几天至100年溃决的是高危型堰塞湖;溃决时间超过100年者,是稳态型堰塞湖。
海上溢油堰式回收技术的原理与改进  [PDF]
张银东,杨杰,张兴明
海洋环境科学 , 2015, DOI: 10.13634/j.cnki.mes20150223
Abstract: 堰式回收技术在海上溢油污染治理中应用广泛。应用堰过流理论对堰式撇油器中回收堰的过流性能进行分析,确定薄壁回收堰发生过流不稳而导致回收效率变差的原因,提出应用曲线形实用堰代替薄壁堰以改进回收堰的过流稳定性和回收速度,并给出曲线形实用堰的设计方法,为堰式撇油器实现溢油的快速高效回收奠定了理论基础。
响叶杨(populusadenopoda)种子的形成及其寿命  [PDF]
吴琼美,樊汝汶
南京林业大学学报(自然科学版) , 1984, DOI: 10.3969/j.jssn.1000-2006.1984.01.014
Abstract: <正>用显微技术及软x射线摄影,定位观察响叶杨种子发育过程中的形态变化与胚胎发育的对应关系。根据观察、试验的结果,讨论了环境条件与种子寿命的关系;还测定了响叶杨种子寿命的变化规律及其影响因素,探索延长这种子寿命的方法。
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