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| 1 | Besponse surface optimization for determination of pesticide multiresidues by matrix solid-phase dispersion and gas chromatograpby显示文摘 | Ping Zheng Youzhao He | 2005 | J Chromatography A2005，1098，： | 1 |
| 2 | Response surface optimization for determination of pesticide multiresidues by matrix solid-phase dispersion and gas chromatography 显示文摘 | HU Yanyun ZHENG Ping HE Youzhao | 2005 | J Chromatography A2005，1098，： | 1 |
| 3 | Determination of chromium(Ⅲ) and chromium(Ⅵ) in mineral water by bidirectional electrostacking and electrothermal atomic absorption spectrometry显示文摘 | HE Youzhao CERVERA M L PASTOR A | 2001 | Anal Chim Acta2001，447，12： | 1 |
| 4 | On-line pretreatment and determination of parabens in cosmetic products by combination of flow injection analysis,solid-phase extraction and micellar electrokinetic chromatography显示文摘 | FANG Han HE Youzhao YU Changzhu | 2008 | Talanta2008，74，5： | 1 |
| 5 | Response surface optimization for determination of pesticide multiresidues by matrix solid - phase dispersion and gas chromatography显示文摘 | Yanyun Hu Ping Zheng Youzhao He | 2005 | J Chromatography A2005，1098，12： | 1 |
| 6 | Relative Carrying Capacity of Resources and Problems of Sustainable Development in Jiangsu Province 显示文摘 | He Min Liu Youzhao | 2003 | China Population Resources and Environment2003，13，3： | 1 |
| 7 | Impro- ving separation efficiency of capillary zone eletro- phoresis of trypophan and phenylalanine With the transient moving chemical reaction boundary method显示文摘 | Cao Chengxi He Youzhao Li Min | 2002 | Journal of Chromatogr A2002，952，： | 1 |
| 8 | Determination of benzoic acid and sorbic acid in food products using electrokinetic flow analysis-ion pair solid phase extraction-capillary zone electrophoresis显示文摘 | HAN Fang HE Youzhao LI Lian | 2008 | Analytica Chimica Acta2008，618，： | 1 |
| 9 | High-precision Thickness Setting Models for Titanium Alloy Plate Cold Rolling without Tension显示文摘Due to its highly favorable physical and chemical properties,titanium and titanium alloy are widely used in a variety of industries.Because of the low output of a single batch,plate cold rolling without tension is the most common rolling production method for titanium alloy.This method is lack of on-line thickness closed-loop control,with carefully thickness setting models for precision.A set of high-precision thickness setting models are proposed to suit the production method.Because of frequent variations in rolling specification,a model structural for the combination of analytical models and statistical models is adopted to replace the traditional self-learning method.The deformation resistance and friction factor,the primary factors which affect model precision,are considered as the objectives of statistical modeling.Firstly,the coefficient fitting of deformation resistance analytical model based on over-determined equations set is adopted.Additionally,a support vector machine(SVM)is applied to the modeling of the deformation resistance and friction factor.The setting models are applied to a 1450 plate-coiling mill for titanium alloy plate rolling,and then thickness precision is found consistently to be within 3%,exceeding the precision of traditional setting models with a self-learning method based on a large number of stable rolling data.Excellent application performance is obtained.The proposed research provides a set of high-precision thickness setting models which are well adapted to the characteristics of titanium alloy plate cold rolling without tension. | WANG Xiaochen YANG Quan HE Fei SUN Youzhao XIAO Huifang | 2015 | Chinese Journal of Mechanical Engineering2015，28，2： | 1 |
| 10 | Experimental investigations on validity of moving chemical reaction boundary equation for the strong acid——weak base system with an excess of potassium chloride显示文摘A moving chemical reaction boundary (MCRB) is formed by the weak alkali NH3*H2O and strong acid HCl with an excess of potassium chloride as background electrolyte. The experimental results are compared with the predictions in accordance with the moving chemical reaction boundary equation (MCRBE). If the MCRB is cathodic, the experimental results are in agreement with the predictions by the MCRBE. However, if the MCRB is anodic, the experimental results significantly deviate from the predictions of the MCRBE. A corrected MCRB equation is proposed for such conditions. The findings are evidently different from those in our early reports(J. Chromatogr. A, 891 (2000): 337~347; 907 (2001): 347~352; 922 (2001) 283~393). This study is of obvious benefit to capillary electrophoresis and isoelectric focusing. | ZHOU Shulin, CAO Chengxi, QIAN Yitai, HE Youzhao, YANG Li, Qu Qishu and CHEN Wenkui(1. School of Life Science and Technology, Shanghai Jiaotong University, Shanghai 200030, China 2. Department of Chemistry, University of Science and Technology of China, Hefei 230026, China 3. Institute of Allergy Reserch, Wannan Medical College, Wuhu 241001, China) | 2002 | Progress in Natural Science:Materials International2002，12，9： | 0 |
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