示准化学科行为互换性定律的创建

本文讨论了互换性定律的族系,研究了非训练行为不准确现象,讨论了行为互换性的需求,推论了行为互换性定律的存在,建立了行为互换性的概念,创建了行为互换性定律的命题及其数学模型,详述了定律的内涵,分析了行为互换性与其他互换性的关系,讨论了行为互换性定律的对象范围、互换类型、自身特点和作用意义,对行为互换性定律进行了验证分析,讨论了行为互换性定律的应用,并给出了应用例子。     

某型车辆驾驶室内部噪声分析研究

建立了某型车辆驾驶室结构的三维有限元模型,对驾驶室进行了试验模态分析,得到了模态参数,检验和修正了结构的三维有限元模型,对驾驶室结构进行了动态响应分析.采用边界元法进行了驾驶室内部声学特性研究,对驾驶员耳旁的声压和声学灵敏度进行了分析,得出了驾驶室内声场的声学特性,对驾驶室结构提出改进措施,有效地降低了车内噪声.     

标准化学科几何互换性定律的创建

本文讨论了规律和定律的关系和特点,讨论了几何互换性的本质关系,推论了互换性定律的存在,创建了动配合互换性定律、定位配合互换性定律、紧配合互换性定律,建立了定律的命题、数学模型和关系模型,详述了每个定律的内涵,创建了支持互换性工程应用的几何互换性空间,讨论了互换性定律的应用,创建了广泛适用的互换性空间。     

标准化学科功能互换性定律的创建

本文讨论了互换性的新模式——功能互换性,阐述了功能互换性的概念和特点,创建了功能互换性的命题,解读了功能互换性命题的内涵及其数学模型,给出了功能互换性的关注情形,探讨了功能互换性的适用范围和作用意义,验证了功能互换性定律的有效性,说明了功能互换性定律的应用,并给出了指导功能互换性定律应用的实例。     

企业标准化信息管理系统分析与设计

从整体上分析了企业标准化管理系统的内容，探讨了计算机应用于企业标准化管理的可行性。根据系统需求分析选择了以ＦＯＸＢＡＳＥ＋为软件工具，从系统的内在关系入手，划分了功能模块，确立了系统软件结构，确定了数据库的结构。并对企业标准化管理软件作了详细描述，进一步阐述了在企业标准化管理中，应用计算机的具体作用及如何推广应用。     

闭幕词--2004年7月9日在中国缩协第三次全国会员代表大会上

经过两天的紧张工作，中国缩微摄影技术协会第三次全国会员代表大会已经圆满完成了各项议程。大会期间选出了第三届理事会，召开了三届一次理事会议，选举了常务理事、理事长、副理事长和秘书长，推举了名誉理事长，批准了十四位老同志为荣誉会员，聘任了副秘书长和各工作委员会的主任委员。     

标准化作业的价值分析

本文创建了自然态劳动作业模型,对自然态劳动作业模型的特点进行了分析,创建了标准化的劳动作业模型,对标准化劳动作业模型的特点作了深入的分析,建立了工业生产的机群模型和流水模型,并进行了对比分析,对自然态劳动作业模型和标准化作业模型进行了对比分析,讨论了标准化作业的价值作用和效果。     

基于LabVIEW的智能扭矩传感器的研究

研究了一种新型多通道光电扭矩传感器,通过光电方法测量旋转轴的扭转角来获得动态扭矩,采用虚拟仪器的思想,基于LabVIEW测试平台实现了对扭矩值的实时显示.应用动态扭矩加载器对扭矩值进行了动态校准.该传感器系统减少了硬件设备,缩短了开发周期,提高了测量精度.     

小型农业机械在大石山区的推广与应用

大石山区只有通过小型农业机械的推广应用,才能提高了劳动生产率,减轻了劳动强度,降低了生产成本,改善了农业生产条件,增加了农民的收入,而且缓解了劳动力季节性短缺的矛盾,促进了劳动力输出的健康发展。本文对小型农业机械在大石山区的推广与应用谈一些体会。     

食品安全呼唤技术进步

中国人在食品中完成了化学扫盲：从大米里我们认识了石蜡,从火腿里我们认识了敌敌畏,从成鸭蛋、辣椒酱里我们认识了苏丹红,从火锅里我们认识了福尔马林,从银耳、蜜枣里我们认识了硫磺,从木耳里我们认识了硫酸铜,从保鲜膜中我们认识了DEHA（己二酸二异辛酯）,从有毒奶瓶中我们认识了双酚A,今天,从奶粉中又让我们知道了三聚氰胺,     

Relationship between mechanical properties and crystal structure in cocrystals and salt of paracetamol

Abstract

Objectives were to study mechanical properties of various solid forms of paracetamol and relate to their crystal structures. Paracetamol form I (PRA), its cocrystals with oxalic acid (PRA-OXA) and 4,4-bipyridine (PRA-BPY) and hydrochloride salt (PRA-HCL) were selected. Cocrystals and salt were scaled-up using rational crystallization methods. The resulting materials were subjected to different solid-state characterizations. The powders were sieved and 90–360?µm sieve fraction was considered. These powders were examined by scanning electron microscopy (SEM) and densities were determined. Tablets were made at applied pressures of 35–180?MPa under controlled conditions and the tablet height, diameter and hardness were measured. Tensile strength and porosity of the tablets were estimated using well known models. Crystal structures of these systems were visualized and slip planes were identified. Cocrystal and salt of PRA were physically pure. Sieved powders had comparable morphologies and particle size. The apparent and theoretical densities of powders were similar, but no clear trends were observed. The tensile strengths of these compacts were increased with increasing pressure whereas tabletability decreased in the order oxalic acid?>?PRA-HCL?≈?PRA-OXA?>?BPY?>?PRA-BPY. Tablet tensile strength decreases exponentially with increasing porosity with the exception of PRY-BPY and BPY. Slip plane prediction based on attachment energies may not be independently considered. However, it was possible to explain the improved mechanical properties of powders based on the crystal structure. Cocrystallization and salt formation have introduced structural features that are responsible for improved tableting properties of PRA.     

圆柱形金属橡胶结构的静态力学性能

对圆柱形金属橡胶结构做静态实验,运用最小二乘法对实验数据进行拟合,得到金属橡胶材料本构方程的各系数,将由实验得到的各系数代入本构方程式中,从而得到理论拟合迟滞回线,将理论拟合迟滞回线与试验迟滞数据进行对比,发现理论拟合迟滞回线与试验迟滞数据吻合较好,同时运用ANSYS有限元软件对金属橡胶结构进行有限元建模、定义边界条件及施加载荷,最后进行应力应变分析,得到应力应变分布图,发现分析结果与实验结果吻合。     

两种含强供电基的三苯胺均二苯乙烯衍生物的合成及光电性能研究

设计合成了两种新型含强供电基团的三苯胺均二苯乙烯类化合物,并通过IR、MS、NMR进行了结构表征,用紫外吸收光谱、荧光发射光谱、循环伏安法(CV)等手段研究了它们的光电性能,分析了它们的电化学行为,计算出其电离势(P1)分别为5.41和5.54eV,带隙(Eg)分别为2.72和2.74eV,结果表明强供电子基团的引入大大增强了荧光量子效率和空穴的注入传输能力.     

有缺陷和无缺陷量子点内应变分布的比较与分析

阐述了量子点内能级结构与应变的关系,用ANSYS7．1计算了有缺陷和无缺陷两种情况下：InAs／GaAs量子点的应变分布,通过对计算结果的比较,讨论了两种情况下不同的应变分布对量子点电子结构影响的不同结果,指出有缺陷时量子点各能级的改变量都与无缺陷时不同,无缺陷时应变的作用只是使能级平行移动;有缺陷时,缺陷将使量子点内能级结构复杂化,有缺陷时发光波长和发光光谱都比无缺陷时复杂。     

Testing of explosive welding and welded joints. Wavy character of the process and joint quality

The basic defects occuring in explosive clad plates were properly systemized and the reasons of their formation were explained. Cases of cracks and delaminations in explosive clad plates were examined in this work. Various values of tensile stresses coming from loading and unloading waves were analysed, as they were the main reason of defects. The defects were connected with properties of welded materials in the joint area and beyond it. Some practical aspects of this process were shown as well.     

应用在食品行业中的冷封胶薄膜

概述了冷封胶薄膜的结构种类、制备工艺以及优点,接着陈述了冷封薄膜在软包装中的应用以及局限性,指出了实际生产中遇到的问题并对问题进行分析,提出改进方法.最后探讨了冷封薄膜未来的发展方向.     

宽带钢力学性能试样机械加工的难点及解决办法

在制取力学性能试样的机械加工中常发现试样有不同程度的弯曲与扭转变形，严重影响试样加工精度和力学性能测试的准确性。对宽带试样变形的产生原因及其对试样机械加工质量的影响进行了分析，并提出了相应措施，取得了较好的效果，保证了加工质量，提高了加工速度。     

Growth and study of some gel grown group II single crystals of iodate

Single crystals of calcium iodate and barium iodate were grown by simple gel technique by single diffusion method. The optimum conditions were established by varying various parameters such as pH of gel solution, gel concentration, gel setting time, concentration of the reactants etc. Crystals having different morphologies and habits were obtained. Prismatic, dendritic crystals of barium iodate and prismatic, needle shaped, hopper crystals of calcium iodate were obtained. Some of them were transparent, some transluscent, and few others were opaque. Both the crystals were studied using XRD, FT-IR, and thermal analysis. The crystals were doped by iron impurity. The effect of doping was studied using IR spectroscopy and thermal analysis.     

计算机直接制版技术的发展问题及动向

阐述和分析了CTP技术的发展情况及特点;探讨了目前CTP发展中存在的认识不高、缺乏政策导向、设备版材配套研发不够、机制问题引起的市场恶性竞争问题突出和数字化环境建设及技术人才培养不够4个方面问题,并提出了发展对策;指出并分析了CTP技术4个主要发展动向:紫激光、热敏CTP发展迅速;外鼓式制版机成为主流;光敏型CTP版材紫激光光聚合版将成为主流;热敏型CTP版材免处理版方兴未艾.     

基于差影技术的乳腺微钙化点检测方法

目的 协助医生进行诊断，避免医生因大量阅片引起疲劳而造成误诊，提高乳腺癌早期诊断的效率和准确率。方法 先对乳腺钼靶X线照片数字化；再对数字化的乳腺影像归一化；然后从中选取感兴趣区域；最后利用差影技术检测出微钙化点并标示于影像中。结果 对于16幅（其中13幅含有微钙化）经过病理解剖确诊的乳腺钼靶片进行实验，利用本文方法共检测出14幅钙化图像。结论 该方法检出率高，微钙化点定位准确，值得进一步研究。