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	Study on the difference between turfy soil and normal peat soil in China (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM2011, October 21, 2011 - October 23, 2011, Shanghai, China 作者: Nie L. 收藏 \| 浏览/下载：40/0 \| 提交时间：2013/03/25 As the special soil turfy soil and peat soil in China contained some similar properties with high void ratio high water content high organic content etc. But turfy soil also had properties which difference from peat soil. In this paper based on the formation of the cause and geological environment and geomorphologic characteristics of geological in the quaternary took the typical and widespread turfy soil and peat soil regions for example systematically discussed the material composition and macroscopic and microcosmic structural features put further research on the physical chemistry mechanical characteristics. Then the come to the conclusion that the essential reason for difference between turfy soil and peat soil were decomposition degree and organic content. The result that worse engineering properties such as higher the moisture content porosity compressibility internal cohesion and the lower specific weight consolidation coefficient and permeability were due to the lower decomposition degree and higher organic content of turfy soil than peat soil. It can provide reference to the practical projects of turfy soil to distinguish peat soil according to this characteristic. (2012) Trans Tech Publications.
	Study and calibration of azimuth effect in multi-position strap-down north seeking system (EI CONFERENCE) 会议论文 OAI收割 7th World Congress on Intelligent Control and Automation, WCICA'08, June 25, 2008 - June 27, 2008, Chongqing, China 作者: Wang Z.; Zhao J.; Wang Z. 收藏 \| 浏览/下载：10/0 \| 提交时间：2013/03/25 In order to reduce the influence of azimuth effect in multi-position strap-down north seeking system its cause of formation is studied based on the precession principle of the dynamically tuned gyro. A detecting system composed by true north prism two Leica theodolites and benchmark prism fixed in the strap-down north seeking system was designed to calibrate the azimuth effect. By two steps many measurements are gone on in every position to eliminate the random error. According to the homologous between the error and the position a sinusoid is made a fit as compensate curve after the error of twelve positions is measured. Then the azimuth effect of the arbitrary position can be corrected by the curve. The experiment result shows that the seeking north standard deviation is only 11.77 after compensation which is considerably less than the 87.75 without correction. 2008 IEEE.
	Dried earth layers of artificial forestland in the Loess Plateau of Shaanxi Province 期刊论文 OAI收割 Journal of Geographical Sciences, 2007, 卷号: 17, 期号: 1, 页码: 114-126 J.B. Zhao; J. Du; B.Q. Chen 收藏 \| 浏览/下载：218/61 \| 提交时间：2011/06/07 Loess Plateau dried earth layer effective factors cause of formation soil moisture zone
	Straight river: its formation and speciality 期刊论文 OAI收割地理学报：英文版, 2002, 卷号: 000, 期号: 1.0, 页码: 72 作者: Wang Suiji; Ni Jinren \| 收藏 \| 浏览/下载：11/0 \| 提交时间：2021/03/16 straight river formation cause evolvement
	Straight river: its formation and speciality 期刊论文 OAI收割地理学报：英文版, 2002, 卷号: 000, 期号: 1.0, 页码: 72 作者: Wang Suiji; Ni Jinren \| 收藏 \| 浏览/下载：14/0 \| 提交时间：2021/03/16 straight river formation cause evolvement