基于高效液相色谱法的帕瑞昔布钠位置异构体测定

建立以高效液相色谱法(HPLC)测定帕瑞昔布钠位置异构体的方法.以硅烷键合硅胶为填充剂(Agela Technologies silica 4.6×250 mm,5μm);以正己烷—异丙醇(85∶15)为流动相,流速,1.0 m L/min,柱温,30℃,检测波长,215 nm.实验表明,帕瑞昔布钠与位置异构体分离度为1.86,理论塔板数分别为8 041和8 929;在0.04μg/m L~0.64μg/m L范围内,帕瑞昔布钠异构体线性关系良好(A=70.647c-1.401,r=0.9998);重复性良好(RSD为0.12%);平均回收率为94.47%(RSD为3.03%,n=9).采用HPLC法测定帕瑞昔布钠中的位置异构体,操作简单,准确度高且灵敏度好,可为控制帕瑞昔布钠质量提供依据.     

Evolutionary game analysis of low-carbon behavior credit supervision of logistics enterprises

Based on the low-carbon obligation fulfillment of Chinese logistics enterprises, this study constructs a tripartite evolutionary game model to analyze the evolutionary process of the interaction between the local government, logistics enterprises and the public in the process of low-carbon behavior credit supervision. Then using Netlogo software, a parameter simulation experiment is conducted to determine the optimal policy for improving the effect of supervision. The results are as follows: ① The combined influence of the local government and the public can effectively change the strategic choice of enterprises and promote the low-carbon behavior of enterprises. ② In terms of improving the effect of supervision, reducing the cost of government supervision would have a highly significant effect, and reducing the cost of the public would be counterproductive. ③ Increasing the government subsidies to enterprises and the government’s fines to enterprises both have a significant effect, and the effect of improving the former is better. However, increasing the severity of higher-level governments punishing local governments will reduce the stability of the system. ④ Supervision can be more effective by increasing the public’s impact on enterprises’ earnings rather than by increasing government subsidies to the public.     

An M-Objective Penalty Function Algorithm Under Big Penalty Parameters

Some classical penalty function algorithms may not always be convergent under big penalty parameters in Matlab software, which makes them impossible to find out an optimal solution to constrained optimization problems. In this paper, a novel penalty function (called M-objective penalty function) with one penalty parameter added to both objective and constrained functions of inequality constrained optimization problems is proposed. Based on the M-objective penalty function, an algorithm is developed to solve an optimal solution to the inequality constrained optimization problems, with its convergence proved under some conditions. Furthermore, numerical results show that the proposed algorithm has a much better convergence than the classical penalty function algorithms under big penalty parameters, and is efficient in choosing a penalty parameter in a large range in Matlab software.     

铝胺钻井液在青东古1井的应用

通过优选抑制剂和封堵剂，确定了铝胺钻井液体系配方，配合相应的现场维护处理工艺，解决了沙河街组地质构造复杂，断层、地应力及层理性泥岩易导致井壁失稳等问题，保证了沙河街组的井壁稳定，使该井提前完钻，提高了钻井时效．该井的钻探成功为深化研究青东区块成藏条件提供了基础资料，有助于该区块进一步的勘探开发．     

网关控制器BootLoader系统设计

为实现某款车用网关控制器的实车应用程序更新功能、方便实车调试,设计了基于CAN总线的BootLoader系统.介绍了BootLoader系统实现的基本思路及具体实现方式,详细分析了以飞思卡尔控制器XET256为平台的存储空间分配、地址表示方式、存储空间擦除与写入方法.基于以CAN标准协议为基础的简单自定义命令和S19文件协议,实现了BootLoader与上位机之间信息的交互.试验结果表明,该BootLoader系统能够正确实现应用程序的更新及引导应用程序的执行,提高了网关控制器实车调试效率.     

由“气韵生动”谈审美活动的符号化显现

审美活动的抽象性特质集中体现在其特殊的形式化特征的显现上。而作为形式化内涵的载体，“符号”的特殊地位就愈发凸显出来。“气韵生动”，这个诞生于我国传统绘画技法当中的审美标尺，就是形式之美的高级实现表述，其可指的对象早已超出绘画的范畴。关于其自身信息传递方式及与我们主体融合对话所呈现出的审美体验的探究，具有非常重要的意义。     

引导滤波与视觉感知结合的自然场景轮廓提取

为更好地解决复杂背景下非结构化自然场景对象的轮廓提取问题,提出了一种引导滤波与视觉感知机制相结合的方法。通过改进的加权引导滤波方法对输入图像进行预处理,在去除图像中噪声的同时,保留和突出图像中物体的轮廓信息;之后采用基于非经典感受野视觉机制的背景抑制和轮廓增强算法进行处理。给出了完整的处理流程,阐述了各部分算法的实现步骤。通过最后定性和定量的实验对比,所提出的算法在效果上优于以往的同类算法,为进一步自然场景轮廓提取的实用化改进和视觉感受野仿生图像处理提供了一种思路。     

地方高师院校地理信息科学系地图学课程的教学改革

从当前地方高师院校地理信息科学系的角度分析了地图学课程的性质和特点等,阐述了目前的教学现状及其存在的主要问题,并以重庆师范大学地理信息科学系的地图学课程为例,从教学方法、评价体系和教材等方面实施了可参考和借鉴的教学改革措施,并取得了较好的教学效果.     

视频数据挖掘的非接触式桥梁振动监测

为克服传统桥梁监测技术施工难、成本高和观测点少等不足,利用视觉技术实现了非接触式桥梁振动状态监测。该方法包含视频数据采集、视频数据分析与结果可视化等3个环节。其中,视频数据分析环节又包含3个步骤:首先,对视频中的稳定像素点进行定位;然后,根据视频中稳定像素点的数值变化,由视频数据挖掘方法建立视频热噪声模型;最后,由视频热噪声模型计算出视频中桥梁各局部位置上的振动频率。实验结果表明,该方法可有效侦测到桥梁可见结构部件上出现的人眼不易察觉的微弱振动,并对桥梁不同局部位置上出现的振动频率进行同步定量测算,从而提供了一种便捷高效、成本合理、通用性好的桥梁结构健康监测新途径。     

数学软件与解析几何教学的有效整合

从转变教学形式、加强实验课时以及调整考核形式等方面,探讨了Mathematica与解析几何课程整合的一些措施,整合的实质即建设解析几何实验课程.