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	The metal- and covalent-organic frameworks-based molecularly imprinted polymer composites for sample pretreatment 期刊论文 OAI收割 TRAC-TRENDS IN ANALYTICAL CHEMISTRY, 2024, 卷号: 178, 页码: 20 作者: Wen, Yuhao; Sun, Dani; Li, Jinhua; Ostovan, Abbas; Wang, Xiaoyan \| 收藏 \| 浏览/下载：9/0 \| 提交时间：2024/10/24 Molecularly imprinted polymers (MIPs) Metal -organic frameworks (MOFs) Covalent -organic frameworks (COFs) Composite materials Molecular recognition characteristics Sample pretreatment Sample preparation
	Strength Characteristics and Slope Stability Analysis of Expansive Soil with Filled Fissures 期刊论文 OAI收割 APPLIED SCIENCES-BASEL, 2020, 卷号: 10, 期号: 13, 页码: 16 作者: Dai, Zhangjun; Guo, Jianhua; Luo, Hongming; Li, Jian; Chen, Shanxiong \| 收藏 \| 浏览/下载：21/0 \| 提交时间：2021/05/25 expansive soil filled fissure triaxial test sample preparation device strength characteristics slope stability sliding surface
	Molecular genetic studies of ADHD and its candidate genes: A review 期刊论文 OAI收割 PSYCHIATRY RESEARCH, 2014, 卷号: 219, 期号: 1, 页码: 10-24 作者: Li, Zhao; Chang, Su-hua; Zhang, Liu-yan; Gao, Lei; Wang, Jing 收藏 \| 浏览/下载：33/0 \| 提交时间：2015/09/18 Attention-deficit/hyperactivity disorder Linkage study Association study Study design Sample characteristics
	Ethanol outperforms multiple solvents in the extraction of chlorophyll-a from biological soil crusts 期刊论文 OAI收割 SOIL BIOLOGY & BIOCHEMISTRY, 2011, 卷号: 43, 期号: 4, 页码: 857-861 作者: Lan, Shubin; Wu, Li; Zhang, Delu; Hu, Chunxiang; Liu, Yongding 收藏 \| 浏览/下载：78/17 \| 提交时间：2011/06/30 Photoautotrophic biomass Extraction efficiency Mass of sample Development and succession Soil characteristics
	The research on statistical properties of TDI-CCD imaging noise (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China Gu Y.-Y.; Shen X.-H.; He G.-X. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 TDI-CCD can improve the sensitivity of space camera without any degradation of spatial resolution which is widely used in aerospace imaging devices. The article describes the basic working principle and application characteristics of TDI-CCD devices analyses the composition of TDI-CCD imaging noise and propose a new method to analyze TDI-CCD imaging noise with statistical probability distribution. In order to estimate the distribution of gray values affect by noise we introduced the concept of skewness and kurtosis. We design an experiment using constant illumination light source take image with TDI-CCD working at different stage such as stage 16 stage 32 stage 48 stage 64 and stage 96 analyse the characteristics of image noise with the method we proposed experimental results show that the gray values approximately meet normal distribution in large sample cases. 2011 SPIE.
	Analyse the angular velocity estimation errors of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者: Zhang Y. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter based on high sampling rate was established model and error characteristics were analyzed. With the hypothesis of constant acceleration -- filter and its angular velocity transfer function were deduced. Combing with optimum parameters the effects of and sample rate on the error characteristics were evaluated. According to the requirements of stabilization servo mechanism the frequency characteristics of angular velocity transfer function are analyzed and the filter parameters are designed. The experimental which filter tracked and smoothed sinusoidal signal the results show that when the cutoff frequency of angular velocity loop is 44.9rad/s sampling period and parameters are 0.08ms and 0.01279 respectively the phase leading of angular position is 70. -- filter tracked sinusoidal signals with maximum angular velocity(30/s) and maximum angular acceleration(30/s2) the error of angular velocity estimation was 0.053/s. In the engineering of electro-optical stabilization servo mechanism -- filter can reduce noise effectively and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.
	The angular velocity estimation principal of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者: Zhang Y. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter and its angular velocity transfer function were predigested. Combing with optimum parameters -- filter based on high sampling rate was established the effect of and sample rate on filter nature frequency were evaluated. According to the requirements of stabilization platform the principle of steady and transient tracking filter differential were proved. With the hypothesis of constant acceleration the frequency characteristics of angular velocity transfer function were analyzed three-dimensional Kalman filter was simplified and the filter parameters were designed. The results show that when the spectrum of input signal was lower than 6rad/s parameters was 0.02 and sampling period were 0.08ms and 0.1ms respectively the filter can realize differential exactly when the spectrum was 9rad/s the precision was no less than 1.1% the phase leading of angular position was no less than 70 the natural frequency should be higher than the cut-off frequency of stabilization platform was two or three times. In the engineering of electro-optical stabilization servo mechanism -- filter has properties of tracking differential and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.
	Graph fitting test method for the interpolation error of Moire fringe (EI CONFERENCE) 会议论文 OAI收割 9th International Conference on Electronic Measurement and Instruments, ICEMI 2009, August 16, 2009 - August 19, 2009, Beijing, China 作者: Sun Y.; Sun Y. 收藏 \| 浏览/下载：30/0 \| 提交时间：2013/03/25 In order to realize the fast test for the interpolation error the graph fitting test method for the interpolation error of Moire fringe is put forward in this paper. Firstly the triangular wave Moire fringe photoelectric signal of the encoder whose phase difference is 90 are sampled to get the Lissajous graph of the two signals. Secondly the single wave represented by the founded subsection function is used to fit the practical Moire fringe Lissajous graph. Then the fitting result is tested to verify whether it satisfies the accuracy requirement. Lastly the founded subsection function instead of the practical wave function is used to calculate the interpolation error. Using the graph fitting method to sample the Moire fringe single of 15-bits photoelectric encoder to get the interpolation error curve the tested maximum interpolation error is 70" and the minimum error is - 69". Comparing with the interpolation error which is received from traditional test method the change trend of the interpolation error curve is similar and peak-peak value is almost equality. The results of experiment indicate that: the equipment is convenient and the examination method is efficient and feasible. The measure speed is fast and the manifestation result is intuitionistic. The system can be used in the working field. The method can avoid the speed influence and realize the dynamic interpolation error measure which is significant for the research of encoder's dynamic accuracy characteristics. 2009 IEEE.