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A New Wronskian Condition for a(3+1)-Dimensional Nonlinear Evolution Equation

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Chinese Physics Letters 2011年第5期28卷 57-59页

作者： wu jian-ping Institute of Electronic Technology Information Engineering UniversityZhengzhou 450004

A new Wronskian condition is set for a(3+1)-dimensional nonlinear evolution *** the aid of the Hirota bilinear transformation,a novel Wronskian determinant solution is presented for the equation.

关键词： equation bilinear Nonlinear

超高效液相色谱-串联质谱法测定添加剂预混合饲料中3种异噻唑啉酮杀菌剂的研究

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饲料研究 2024年第17期47卷 138-143页

作者：吴雨珊张婧吴剑平王博曹莹严凤上海市动物疫病预防控制中心上海201103

试验旨在建立添加剂预混合饲料中3种噻唑啉酮类药物的超高效液相色谱-串联质谱测定方法(UPLC-MS/MS)。饲料样品经乙腈提取后,使用Prime HLB小柱净化,以SB-C18(100 mm×3 mm,1.8μm)作为分析柱,甲醇和水作为流动相进行梯度洗脱。在电喷... 详细信息

试验旨在建立添加剂预混合饲料中3种噻唑啉酮类药物的超高效液相色谱-串联质谱测定方法(UPLC-MS/MS)。饲料样品经乙腈提取后,使用Prime HLB小柱净化,以SB-C18(100 mm×3 mm,1.8μm)作为分析柱,甲醇和水作为流动相进行梯度洗脱。在电喷雾正离子模式下,进行检测;使用基质匹配外标法测定3种异噻唑啉酮类药物的含量,并对所建方法的线性关系、检出限、定量限、回收率、准确度、精密度等指标进行考察。结果显示,在0.25~500.00μg/L范围内线性关系良好,3种目标物的相关系数(R^(2))均大于0.9900;检出限、定量限分别为10μg/kg和30μg/kg。3种异噻唑啉酮类药物的回收率在69.8%~99.9%之间,相对标准偏差(RSD)在4.2%~10.0%之间。研究表明,试验所用方法操作简单、灵敏度高且定量准确,适用于测定添加剂预混合饲料中3种异噻唑啉酮类药物含量,可为养殖环节投入品中异噻唑啉酮类药物污染筛查提供准确高效的技术手段,从源头保障动物源性产品安全。

关键词：添加剂预混合饲料超高效液相色谱-串联质谱异噻唑啉酮杀菌剂

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一种基于互信息度量的时序数据因果发现方法

控制与决策 2024年第9期39卷 3151-3159页

作者：李德志鲁云军吴健平李强国防科技大学信息通信学院武汉430019

在时序数据因果关系发现研究中,传统算法针对时间窗口内时序数据之间的因果关系进行分析,存在因果关系识别准确率受限、算法复杂度较高等问题.为解决该问题,首先对概要因果图、因果概要互信息和条件因果概要互信息进行定义,在此基础上... 详细信息

在时序数据因果关系发现研究中,传统算法针对时间窗口内时序数据之间的因果关系进行分析,存在因果关系识别准确率受限、算法复杂度较高等问题.为解决该问题,首先对概要因果图、因果概要互信息和条件因果概要互信息进行定义,在此基础上推导出基于因果互信息的时序变量定向规则,而后区分是否存在混杂因子,结合PC (Peter and Clark)和FCI (fast causal inference)算法分别提出改进的PCSMI (Peter and Clark summary mutual information)和FCISMI (fast causal inference summary mutual information)算法.实验结果表明改进后算法能够在低复杂度条件下有效提升时序数据因果发现的准确率.

关键词：因果发现时序数据概要因果图因果概要互信息条件因果概要互信息 PC FCI

液相色谱-串联质谱法同时快速检测鸡蛋中的氟苯尼考及其代谢物残留

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化学研究与应用 2024年第9期36卷 2210-2216页

作者：张婧吴剑平王博陶玉洁严凤上海市兽药饲料检测所上海201103

建立鸡蛋中氟苯尼考及其代谢物氟苯尼考胺的液相色谱-串联质谱(HPLC-MS/MS)检测方法。样品采用2%氨水乙酸乙酯提取并经C_(18)粉净化,以Waters HSS T3色谱柱(100mm×2.1mm,1.8μm)分离,0.01%甲酸水溶液和乙腈溶液为流动相进行梯度洗脱,... 详细信息

建立鸡蛋中氟苯尼考及其代谢物氟苯尼考胺的液相色谱-串联质谱(HPLC-MS/MS)检测方法。样品采用2%氨水乙酸乙酯提取并经C_(18)粉净化,以Waters HSS T3色谱柱(100mm×2.1mm,1.8μm)分离,0.01%甲酸水溶液和乙腈溶液为流动相进行梯度洗脱,并采用HPLC-MS/MS电喷雾电源(ESI)正负离子同时采集检测,以内标法定量。结果表明:氟苯尼考及氟苯尼考胺在0.1~10ng·mL^(-1)范围内线性关系良好;检出限为0.6μg·kg^(-1);方法回收率范围为89.1~109.6%,相对标准偏差范围为4.4~15.3%。该方法较传统的检测方法省去了繁琐的前处理步骤,分析速度快、效率高、灵敏度好,填补了鸡蛋中氟苯尼考及氟苯尼考胺同时检测的标准检测技术空白。

关键词：鸡蛋氟苯尼考氟苯尼考胺液相色谱-串联质谱

New Wronskian Representation of Solution for a Variable-Coefficient Kadomtsev-Petviashvili Equation

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Chinese Physics Letters 2013年第6期30卷 46-49页

作者： wu jian-ping GENG Xian-Guo Department of Mathematics Zhengzhou University100 Kexue RoadZhengzhou 450001

Utilizing the Wronskian technique,a new Wronskian representation is proposed for a variable-coefficient Kadomtsev–Petviashvili(vcKP)***,some particular forms of Wronskian determinant solutions,includingN-soliton solu... 详细信息

关键词： equation. soliton rational

Grammian Determinant Solution and Pfaffianization for a (3+1)-Dimensional Soliton Equation

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Communications in Theoretical Physics 2009年第11期52卷 791-794页

作者： wu jian-ping GENG Xian-Guo2 Institute of Electronic Technology Information Engineering University Zhengzhou 450004 China Department of Mathematics Zhengzhou University Zhengzhou 450052 China

Based on the Pfaffian derivative formulae,a Grammian determinant solution for a(3+1)-dimensionalsoliton equation is ***,the Pfaffianization procedure is applied for the equation to generate a newcoupled *** last,a Gra... 详细信息

关键词： (3+1)-dimensional soliton equation Grammian determinant solution Pfaffianization Gram-type Pfaffian solution

ANALYSIS OF MESOSCALE CONVECTIVE SYSTEMS OVER TIBETAN PLATEAU IN SUMMER

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Chinese Geographical Science 2006年第2期16卷 116-121页

作者： GUO Zhong-yang DAI Xiao-yan wu jian-ping LIN Hui Key Laboratory of Geographic Information Science of Ministry of Education East China Normal University Shanghai 200062 P. R. China Department of Geography and Resource Management ＆ Joint Laboratory for Geolnformation Science the Chinese University of Hong Kong Hong Kong P. R. China

In this paper, Geostationary Meteorological Satellite (GMS) infrared black-body temperature (Tbb) data from June to August 1998 are used to automatically track the activity of Mesoscale Convective System (MCS) over the Tibetan Plateau in China. Consequently, the features of MCS, such as area, intensity, life cycle, activity region and shape, are obtained. High Resolution Limited Area Analysis and Forecasting System (HLAFS) values provided by China National Meteorological Center are used to study the relationships between the MCS trajectories and their environmental physical field values, based on the distribution and trajectories of MCSs over the Tibetan Plateau. Favorable environmental physical field charts of influencing MCS movement out of the Tibetan Plateau in different UTC (Universal Time Coordinate) are developed by using spatial data mining techniques at levels of 400hPa and 500hPa, respectively.

关键词： Tibetan Plateau Mesoscale Convective Systems black-body temperature automatically tracking

透明质酸酶体外活性抑制抗过敏模型测定活性胶原蛋白的抗敏抗炎功效

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日用化学品科学 2024年第5期47卷 22-25页

作者：吴剑萍李思祥李琪叶春婷广州创尔生物技术股份有限公司广东广州510700

研究活性胶原蛋白的抗敏抗炎功效,采用0.1%(w/%)聚丙烯酸钠接枝淀粉对活性胶原蛋白进行保护后,通过透明质酸酶体外活性抑制实验,对活性胶原蛋白进行抗敏抗炎功效的研究。研究结果表明,经0.1%(w/%)聚丙烯酸钠接枝淀粉保护后的活性胶原蛋... 详细信息

研究活性胶原蛋白的抗敏抗炎功效,采用0.1%(w/%)聚丙烯酸钠接枝淀粉对活性胶原蛋白进行保护后,通过透明质酸酶体外活性抑制实验,对活性胶原蛋白进行抗敏抗炎功效的研究。研究结果表明,经0.1%(w/%)聚丙烯酸钠接枝淀粉保护后的活性胶原蛋白,解决了活性胶原蛋白与透明质酸钠的絮凝问题;活性胶原蛋白对透明质酸酶具有抑制作用,抑制率随活性胶原浓度的增加而增大,活性胶原蛋白浓度0.758 mg/mL的抗敏抗炎性能与0.03 mg/mL的扑尔敏相当,显示出活性胶原蛋白具有优异的抗敏抗炎功效,在化妆品应用中具有非常广泛的应用前景。

关键词：透明质酸酶活性胶原蛋白抗炎抗敏

MAGE ANALYSIS OF GEOSTATIONARY METEOROLOGICAL SATELLITE FOR MONITORING MOVEMENT OF MESOSCALE CONVECTIVE SYSTEMS OVER TIBETAN PLATEAU

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Chinese Geographical Science 2005年第3期15卷 231-237页

作者： DAI Xiao-yan wu jian-ping LIN Hui Ministry of Education Key Laboratory of Geographic lnJbrmation Science East China Normal UniversityShanghai 200062 P. R. China Department of Geography and Resource Management ＆ Joint Laboratory for Geolnformation Science the Chinese University of Hong Kong Hong Kong P. R. China

Disaster weather forecasting is becoming increasingly important. In this paper, the trajectories of Mesoscale Convective Systems （MCSs） were automatically tracked over the Chinese Tibetan Plateau using Geostationary Meteorological Satellite （GMS） brightness temperature （Tbb） from June to August 1998, and the MCSs are classified according to their movement direction. Based on these, spatial data mining methods are used to study the relationships between MCSs trajectories and their environmental physical field values. Results indicate that at 400hPa level, the trajectories of MCSs moving across the 105°E boundary are less influenced by water vapor flux divergence, vertical wind velocity, reIative humidity and K index. In addition, if the gravity central longitude locations of MCSs are between 104°E and 105°E, then geopotential height and wind divergence are two main factors in movement causation. On the other hand, at 500hPa level, the trajectories of MCSs in a north-east direction are mainly influenced by K index and water vapor flux divergence when their central locations are less than 104°E. However, the MCSs moving in an east and south-east direction are influenced by a few correlation factors at this level.

关键词： Tibetan Plateau Mesoscale Convective Systems automatically tracking spatial data mining