多功能光栅测量仪

MGMI系列测量仪器量程为0～100mm,分辨率为0.001mm,可对工件作绝对或比较测量,由于体积小有磁力座,故适用于计量室,车间和科研实验室。它广泛用于机械加工测量,闭环数控,数字显示,8、4、2、1码数字量输出和控制信号输出等系统中。     

ICP-AES法测定硅钢用高纯磷铁中铌钒钛

提出ICP-AES法测定硅钢用高纯磷铁中铌钒钛含量。对样品称样量、溶样方式、溶样酸、光谱干扰、工作曲线制备等进行了优化处理,建立了ICP-AES法测定硅钢用高纯磷铁中铌钒钛含量。此方法应用到实际样品检测,铌钒钛相对标准偏差(RSD,n=11)分别在4.6~9.0%、2.2%~12.4%、4.1~6.3%范围内,回收率分别在99.0%~101.2%、98.3%~102.5%、99.2%~102.8%,方法操作简便,自动化程度高,满足硅钢生产使用要求。     

机载相干激光雷达收发机

相干激光雷达系统建立在固态激光技术上,以对眼安全的波长工作。它已在衫的传感器方面得到飞速发展,这些传感器只在一些地面雷达和机载对风远距离探测上得到应用,而没有在众的飞机上得到应用,这是由于它们的价值、体积、重量、需要大功率的冷却器以使系统温度稳定这些因素所阻制。     

Molecular dynamics studies of a lubricant system by NMR spectroscopic techniques

The present studies highlight the applications of NMR spectroscopic techniques for unravelling the unique structural features present in base oils responsible for imparting lubricant properties. The viscosity—temperature and viscosity—pressure properties of base oils of API groups I—IV, such as viscosity, viscosity index, pour point, elastohydrodynamic film thickness, and pressure—viscosity coefficient, have been correlated with the detailed hydrocarbon composition of base oils with an emphasis on the various types of methyl branched structures. Molecular dynamics parameters, such as diffusion coefficient and energy of activation, estimated from the NMR spectral studies have provided evidence of the factors responsible for the different viscosity—temperature or viscosity—pressure characteristics of base oils.     

空间汇流环的探讨

本文主要对空间汇流环的工作条件作了一些简要介绍,并针对某产品对空间泯流环的技术要求,着重提出了盘式汇流环的设计方案,并对其优缺点及应用前景作了一些探讨。     

光栅光密度测试

本文阐述了光栅光密度的测试情况,文中叙述了多种不同栅距,制造工艺各异的光栅母板、复制品等的光密度测试数据,分据了光栅其他参数对光密度的影响,并对光栅密度标准的制定提出了一些想法。     

邱捷的财富之路

在邱捷看来，日和东浦之所以能够走到今天，关键在于始终坚持以客户为中心。长期以来，日和东浦遵循“与客户共享成功、与员工共求发展、与社会共同进步”的理念，结合自身特点，寻求不断创新。     

DMAIC在降低生产停线时间方面的运用

基于定义—测量—分析—改进—控制(Definition—Measurement—Analysis—Improvement—Control,DMAIC),通过对车间停线时间进行统计测量,找出造成停线的原因所在,然后进行分类改进,最后对改进的结果进行固化,从而达到提高企业产量的目的.     

大范围连续可变且精细可调的光学延迟器

本文报导了一种光学延迟器的设计和研制结果。该延迟器主要由一个输入三棱镜和一组共轭焦点的球面反射镜所组成,可以实现大到几百个毫微秒范围的连续可变和小到几十个飞秒的精细调节,並具有结构简单、稳定性好和保持光束质量等突出的优点。     

Engine oil compositions based on PIB—succinimide combinations

Additive packages for engine oils were prepared using PIB—succinimide combinations with different properties. PIB—succinimide‐type dispersants of various average molecular weights and dominant side effects were selected for preparing multifunctional additive combinations. A high‐molecular‐weight PIB—polysuccinimide type as viscosity‐index improver, a PIB—polysuccinimide with strong basic character as a highly effective sludge dispersant, molybdenum‐containing poly‐alkylene—polysuccinic anhydride derivatives as dispersants with complementary antifriction efficiency, and some conventional detergent, antioxidant, antiwear, and anticorrosion engine oil additives were used in engine oil compositions of various viscosity grades. The technical and economic advantages of appropriately selected and balanced additive combinations were shown by bench test results of the rheological, detergent—dispersant, and antifriction properties of the test oils.     

游泳池水中氰尿酸快速检测仪性能评价

对游泳池水中氰尿酸快速检测仪的反应时间、线性、试剂批次、不同操作人员对检测结果的影响,以及仪器波长示值误差和重复性、仪器示值误差和重复性以及样品加标回收率等性能指标进行了系统的考察。实验结果表明:氰尿酸在20.0～100.0 mg/L检测范围内时,检测仪标准曲线的线性相关系数r大于0.9998;不同批次试剂检测相对误差小于±5%;不同操作人员检测同一样品的相对误差小于±10%;3台检测仪波长示值误差范围为-0.05 nm～0.53 nm,波长重复性范围为0.02 nm～0.05 nm; 3台仪器设备对20.00 mg/L和50.00 mg/L两浓度标准溶液测定的示值误差均小于±5%,重复性均小于5%;水样的低、中、高浓度加标回收率范围为86.3.0%～111.6%。     

The state of the art of high energy rate bulk forming

This paper reviews the field of high energy rate bulk forming, considering the machine advantages and the process advantages in relation to conventional machines; the different types of HERF machines and their respective industrial roles; the economics of HERF hammers; and finally HERF processes. The latter topic is explored in depth and covers: (i) Hot Forming — process advantages, die life, dwell time, tooling design, component accuracy, die materials; (ii) Cold Forming — process advantages, producting experience, tooling design, upsetting and heading, tool life, tool materials; (iii) Warm Forming — process advantages, forging temperature, process experience; (iv) Powder Compaction — process advantages, types of powder; (v) Powder Forging — powder preforms, process advantages, component density, process experience; (vi) Cropping — process advantages, long billets, short billets, blade life, economic potential; (vii) Blanking and Piercing — process advantages, tool design, economic potential. Both the machines and the processes discussed are illustrated by numerous figures, and there is extensive reference to relevant published literature.     

YJ1—YAG激光眼科治疗机的光学系统设计

简要地介绍了 YJ1— YAG激光眼科治疗机的组成。详细叙述了该机的光学系统的设计原理和方法 ,并分析了它的性能特点。     

An application of high-resolution transmission electron microscopy to the study of the fine structure of dislocations in potassium feldspars

An application of high-resolution transmission electron microscopy (HRTEM) to the study of two types of dislocations in potassium feldspars (K-feldspars) is shown here. HRTEM images were submitted to a filtering in order to improve their interpretation. One type of dislocation—(010)[001]/2—appears to be dissociated, with (010)[001]/2 planar defect, whereas the other one—(010)[110]/2—is perfect. This result helps provide an understanding of dislocation activation in this material.     

车载分体式空调器的隔振方法与实践

介绍了野战环境中车载空调器进行隔振时的耦合振动和共振问题,提出了实现完全解耦的方法,建立了无谐辱劝隔离的模型,并对其进行了推导,通过实际工况的试验和检测,验证了解耦方法和无谐振动隔离原理。     

超级微波ICP-MS法测定食用猪油中5种微量元素

建立了超级微波ICP-MS(电感耦合等离子体质谱)法测定食用猪油中5种微量元素。使用超级微波对食用猪油消化前处理,直接定容,采用ICP-MS法进行分析。结果表明:在0~20μg/L浓度范围内,5种元素标准曲线的线性关系良好,相关系数在0.9998~1.0000之间,检出限在0.003~0.017μg/L,加标回收率在98.3%~109.2%,RSD在2.62%~5.26%之间。相比于传统微波,该方法耗时短,效率高,可以满足日常大量样品分析。     

略论紫外可见分光光度计对光栅的基本要求

本文详细讨论了紫外可见分光光度计对光栅的基本要求;分析了用于紫外可见分光光度计的光栅之输出能量、波长范围、杂散光和分辨率等方面的要求;对杂散光和分辨率的测试方法也作了简单讨论;本文可供从事紫外分光光度计、光栅单色仪设计以及研制光栅的工作者参考。     

A tribological study of an S–P–N containing additive in polyalphaolefin

The load‐carrying capacity, antiwear, and friction reduction properties of a novel S—P—N additive (BMDDP) added to a synthetic lubricant, polyalphaolefin (PAO), were evaluated using a four‐ball test machine. The results were compared with those of a commercial S—P—N additive (T307), and show that BMDDP is an excellent extreme pressure and antiwear additive in polyalphaolefin, similar to T307. The rubbed surfaces were investigated using X‐ray photoelectron spectroscopy, and the antiwear mechanism is discussed.     

单分子拉曼光谱超灵敏分析技术的新进展

描述了一种快速发展的超灵敏检测技术——单分子拉曼光谱,对其特点和可能的应用领域做了介绍。     

Antiwear synergism between organomolybdenum compounds and a ZnDDP

A four‐ball machine was used to evaluate the antiwear performance of three kinds of organomolybdenum compounds — molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate (MoDTC), and sulphur‐ and phosphorus‐free organomolybdenum — and their antiwear synergistic effect with a zinc dialkyldithiophosphate (ZnDDP). The results indicate that the three organomolybdenum compounds have good antiwear properties, especially MoDDP, and the organomolybdenum compound — especially MoDTC and sulphur‐ and phosphorus‐free organomolybdenum compound — exhibit good antiwear synergisms with ZnDDP in a paraffin base oil. Copyright © 2006 John Wiley & Sons, Ltd.