机械镀锌新工艺

本文介绍一种新的镀涂方法,并就机械原理、标准处理工艺、适用材料、设备和特点作了简单地介绍,着重介绍机械镀锌工艺。     

第五届国际电子测试与测量专业研讨会

在2005年秋季（第66届）全国电子产品展览会期间。主办单位在上海新国际博览中心举办了电子测试与测量专业研讨会。会上，中国工程院院士张钟华先生介绍了“‘十一五’电子测试与测量技术的发展”、美国吉时利公司介绍了“半导体器件特性测试的新技术”、日本横河公司介绍了“高性能便捷的电子元件测试技术”、美国NI公司介绍了“高效、模块化的消费电子测试解决方案”、凌华集团介绍了“PXI系统于各式量测应用开发环境中的实际案例”、北京航天测控公司介绍了“故障诊断技术研究与应用”、赛宝实验室介绍了“电磁兼容测试仪器的计量校准”、南京长盛公司介绍了“电子设备（电器设备）的防触电措施和安全测试（试验）”等。     

12Cr2Mo1R加氢反应器壳体焊接工艺

介绍加氢反应器用途、分类、使用钢材种类,详细介绍12Cr2Mo1R加氢反应器焊接材料、焊接方法、检验项目及标准。最后实例介绍某加氢反应器焊接工艺设计、实施及检验要点。     

电子商务解决方案研究

介绍电子商务解决方案的概念、分类、选择原因、选择方法,并介绍几个实用方案。     

“空客车用机”的大协同——A400M战术运输机

简要介绍了空客军用机公司研制的A400M战术运输机的演化、转变过程;介绍了该机的主要战、技术性能指标;介绍了该机的研发现状及分工概况等。     

小型冲压机械手设计

介绍一种冲压设备间自动搬运用机械手的设计方案、工艺流程及设备组成。详细介绍机械手滚珠丝杠副的设计原理及计算方法,概括介绍电磁铁、线性滑块、导轨、伺服电机、马达及减速机等部件参数的确定过程。     

恶臭污染及其治理技术

本文介绍了恶臭的来源及危害,并介绍了恶臭的治理技术、重点介绍了亚臭生物汉理技术的发展及应用。     

解析汽车工业的电子商务

文章在介绍汽车工业的价值链以及当前汽车工业所处的经济结构模式基础上,进一步介绍汽车行业中存在的电子商务模式。并将较为详细地介绍采购、销售、物流中的电子商务。     

旋转角的检测及智能化电子凸轮开关控制器

本文介绍了一种由单片机８０３１开发的智能化电子凸轮开关控制器的电路结构、工作原理、软件设计及使用方法，着重介绍了旋转角的检测，并以实例介绍其应用。此系统硬件简单、测量速度快、控制精度高、运行可靠。     

超大型500吨级BOP龙门起重机研制

介绍了采油业相关背景知识;介绍了防喷器龙门起重机的参数、组成、特点。     

GFJ—l型刚度分选机

本文介绍了GFJ-l型刚度分选机的结构设计、计算机控制、技术指标、用途、所达到的测试精度和在设计中应注意的几点问题.     

空气离心压缩机运转失效分析

介绍了5TYD160型空气压缩机运行失效的现象,分析出此压缩机使用环境中含有“SO2”气体和“铜尘”;水气分离器效果不好,轴套、冷却器壳体材料不防锈等是造成失效的原因,提出了改进措施.     

移动式吸压组合型气力输送机分离除尘技术

分离除尘器是移动式吸压组合型气力输送机的重要组成部分，其结构尺寸和重量是该机型整机结构尺寸和灵活性的决定因素。本文主要总结国家重点科技项目——移动式吸压组合型气力输送机中的分离除尘器主体结构小型化以及提高分离除尘效果的关键技术。     

重力式气液分离器的内流场CFD模拟

介绍重力分离的分离器.用CFD数值模拟方法,采用多相流模型中的欧拉-欧拉(Euler-Euler)的particle(Inhomogeneous)模型,且与实验结果吻合较好,说明该湍流模型和算法可行.同时用正交实验法设置模拟步骤,就分离因素之于分离效果进行统计对比,初步揭示分离因素的影响规律,可为进一步研究重力式气液分离器的结构优化提供参考.     

岭澳核电站常规岛MSR的国内研制

汽水分离再热器（简称MSR）是核电站常规岛的特有设备，属内部结构复杂的薄壁大型复合式卧式容器。本文对其制造过程中的难点与重点进行了系统分析，并结合实际制造过程中工艺措施与工装手段的实施，对MSR制造工艺技术以及取得的经验进行了较为全面的阐述。     

干式永磁磁选机的研制与应用探讨

为了给我国磁选机的研制开发提供有效的鉴借,本文从永磁材料的介绍入手,通过归纳法分析,总结了我国磁选机研制的现状,过于注重磁场强度和梯度的研究影响磁选机的研制研制水准,希望加强对磁场特性和磁路结构的研究。     

船舶分油机自动控制的实现

运用触摸屏、PLC、传感器以及智能仪器等硬件,对现有实训室中的ALFA-LAVAL分油机控制系统进行升级改造,使之达到《钢质海船入级与建造规范》对AUT-0自动化船舶中的分油机要求。实践证明,改造后的船舶分油机自动控制系统,运行良好,并通过国家海事局船员培训校验专家组的验收。     

Modification of an AEI/GEC MS9 High-Resolution Mass Spectrometer for Electron Impact/Chemical Ionization Studies

ABSTRACT

A double-focusing MS9 mass spectrometer has been modified to permit operation in both chemical ionization (CI) and electron impact (EI) modes. The modifications consist mainly of a closed ion chamber, a high capacity pumping system, a reactant gas inlet system, a new solid sample probe, and a source pressure measuring device. Changes have also been made in the electronic system and a new ion source power supply has been incorporated. The new ion source can be operated in the CI mode at pressures up to 1 Torr while the pressure in the analyzer is better than 10^?7 Torr. The new set-up has the ability to analyze solid, liquid, and gas samples in both CI and EI mode. It has also the ability to do GC/MS without a Separator.

The sensitivity in the CI mode is comparable to the sensitivity in the EI mode, and the maximum resolution obtained with the CI/EI source is similar to that obtained with the original EI source.     

Mass and lifetime measurements of exotic nuclei in storage rings

Mass and lifetime measurements lead to the discovery and understanding of basic properties of matter. The isotopic nature of the chemical elements, nuclear binding, and the location and strength of nuclear shells are the most outstanding examples leading to the development of the first nuclear models. More recent are the discoveries of new structures of nuclides far from the valley of stability. A new generation of direct mass measurements which allows the exploration of extended areas of the nuclear mass surface with high accuracy has been opened up with the combination of the Experimental Storage Ring ESR and the FRragment Separator FRS at GSI Darmstadt. In-flight separated nuclei are stored in the ring. Their masses are directly determined from the revolution frequency. Dependent on the half-life two complementary methods are applied. Schottky Mass Spectrometry SMS relies on the measurement of the revolution frequency of electron cooled stored ions. The cooling time determines the lower half-life limit to the order of seconds. For Isochronous Mass Spectrometry IMS the ring is operated in an isochronous ion-optical mode. The revolution frequency of the individual ions coasting in the ring is measured using a time-of-flight method. Nuclides with lifetimes down to microseconds become accessible. With SMS masses of several hundreds nuclides have been measured simultaneously with an accuracy in the 2 x 10(-7)-range. This high accuracy and the ability to study large areas of the mass surface are ideal tools to discover new nuclear structure properties and to guide improvements for theoretical mass models. In addition, nuclear half-lives of stored bare and highly charged ions have been measured. This new experimental development is a significant progress since nuclear decay characteristics are mostly known for neutral atoms. For bare and highly charged ions new nuclear decay modes become possible, such as bound-state beta decay. Dramatic changes in the nuclear lifetime have been observed in highly charged ions compared to neutral atoms due to blocking of nuclear decay channels caused by the modified atomic interaction. High ionization degrees prevail in hot stellar matter and thus these experiments have great relevance for the understanding of the synthesis of elements in the universe and astrophysical scenarios in general.