静脉产业园区规划建设研究

静脉产业园区是我国一种新近兴起、前景广阔的产业空间。本文首先结合我国静脉产业的发展现状,将静脉产业园区划分为生活垃圾类、工业固废类和机电类三种。然后,针对每种静脉产业园区的运输特点、环境影响、建设条件等,结合建设实践深入探讨它们的建设选址要求、用地规模预测和空间布局模式,从而构建起相对完善的园区规划研究框架,为发展循环经济、建设生态城市提供空间载体。     

基于未确知理论的小清河水环境容量计算

河流系统存在一定的不确定性.设计流量的确定对于水环境容量的计算具有决定作用.将未确知理论引入水环境容量计算,采用未确知理论中未确知有理数概念,将设计流量作为未确知有理数,分别计算其不同情况下的取值可能值以及可信度.以山东省小清河济南段为例,计算得到90％设计流量下水环境容量的区间值及其对应可信度,旨在更充分的了解小清河水环境容量的实际情况,为水环境治理提供更科学的依据.     

A novel green emitting phosphor Ca2GeO4:Tb3+

A novel green emitting phosphor, Tb³⁺-doped Ca₂GeO₄ was prepared for the first time by a solid-state reaction. The phosphor showed prominent luminescence in green due to the magnetic dipole transition of ⁵D₄ → ⁷F₅. Structural characterization of the luminescent material was carried out with X-ray powder diffraction (XRD) analysis and field emission scanning electron microscopy (FE-SEM). Luminescence properties were analyzed by measuring the excitation and photoluminescence spectra. Photoluminescence measurements indicated that the phosphor exhibited bright green emission at about 541 and 550 nm under UV excitation. In addition, Al³⁺ or Li⁺ co-doping enhances the green emission from Ca₂GeO₄:Tb³⁺ by about 18 and 4 times, respectively, under UV excitation. The excellent luminescence properties make it a possible candidate for flat panel display application.     

UPLC-MS/MS测定蜂王浆中7种磺胺类药物的残留

目的建立超高效液相色谱-串联质谱法测定蜂王浆中磺胺类药物残留的方法。方法试样加入乙腈-水(V_乙腈:V_水=80:20)溶液提取,经HLB固相萃取柱净化后,用超高效液相色谱-串联质谱分析测定。选用乙腈-0.1%甲酸为流动相,多反应监测模式(MRM)分析目标化合物。结果7种磺胺类药物均有良好线性关系,相关系数均大于0.99,检出限为0.5~8.0 μg/kg,定量限为1.0~10.0 μg/kg,加标回收率为79.29%~102.63%,相对标准偏差为2.5%~8.4%。结论该方法灵敏度高、操作方便,适用于蜂王浆中7种磺胺类药物残留同时、快速检测。     

高桥手绣的发展现状及制作工艺研究

利用田野调查方法,对高桥手绣的发展现状及制作工艺流程进行了探讨和分析。通过寻访和记录手绣传人生存状态及手绣工艺过程的方式,对高桥手绣订单式加工、原材料缺乏、传统手绣品类消失、手绣从业人员急剧减少的发展现状,以及高桥手绣代表性品种手绣荷包的制作工艺流程即取样、绣制、缝合、缝坠子,进行了详细而深入的记录、复原、分析与研究。     

Study on the effect of DIC deformation sensor on mechanical property of substrate

The thin epoxy film with micro-scale speckle pattern as a digital image correlation (DIC) deformation sensor has been fabricated or transferred on the surface of sample in the previous study. When the thickness of the film cannot be ignored, it may have an influence on the validity of measurement results. And thus, the influence of the thin epoxy film on mechanical properties of substrates should be investigated. In this study, the mechanical behavior of thin film itself and surface strain of composite structure of thin film and substrate were measured using micro digital image correlation (MDIC) method. And theoretical and simulative results were also analyzed. From the comparison analysis of theoretical, simulative and experimental results, it is concluded that when the ratios of Young’s modulus and thickness between the film and substrate are smaller than 13 and 0.5 respectively, the influence from the thin film can be ignored, and thin epoxy film as DIC sensor can be used to measure the deformation of substrate.     

Design of data feature-driven 1D/2D convolutional neural networks classifier for recycling black plastic wastes through laser spectroscopy

In this study, two types of convolutional neural network (CNN) classifiers are designed to handle the problem of classifying black plastic wastes. In particular, the black plastic wastes have the property of absorbing laser light coming from spectrometer. Therefore, the classification of black plastic wastes remains still a challenging problem compared to classifying other colored plastic wastes using existing spectroscopy (i.e., NIR). When it comes the classification problem of black plastic wastes, effective classification techniques by the laser spectroscopy of Fourier Transform-Infrared Radiation (FT-IR) with Attenuated Total Reflectance (ATR) and Raman to analyze the classification problem of black plastic wastes are introduced. Due to the strong ability of extracting spatial features and remarkable performance in image classification, 1D and 2D CNN through data features are designed as classifiers. The technique of chemical peak points selection is considered to reduce data redundancy. Furthermore, through the selection of data features based on the extracted 1D data with peak points is introduced. Experimental results demonstrate that 2DCNN classifier designed with the help of 2D data feature selection as well as 1DCNN classifier shows the best performance compared with other reported methods for classifying black plastic wastes.     

人事管理信息系统的设计与实现

本文详细介绍了系统开发的设计过程,数据库的设计及各个模块的设计和实现.本系统实现了部门、员工和用户的添加、删除与修改,还有其他诸如员工考勤、员工考评的设置和报表打印等功能,为后续开发提供了基础.     

防水密实剂与泵送剂双掺法在抗渗混凝土中的应用

本工程采用双掺法的设计思路,通过正交试验研究配制出高抗渗性可泵混凝土,以此解决混凝土基础筏板、地下室剪力墙和项板对混凝土性能的要求,并设计出抗渗混凝土施工工艺,提高混凝土抗渗性。     

线控转向技术在装载机上的应用

介绍了装载机线控转向系统的工作原理,阐述了线控转向系统的主要优点和关键技术。该线控转向系统是通过微电子技术连接并控制转向系统的各个元件来代替传统的机械或液压连接,它取消了方向盘和转向车轮之间的机械或液压的连接,通过控制软件协调它们之间的运动关系,可以实现传动比、路感等参数的任意设置,具有传统转向系统所无法比拟的优点。