HT－7托卡马克的八管弹丸注入器

介绍了用于ＨＴ－７托卡马克的的八管弹丸注入器的物理、工程设计原理和结构特点及配置的各种诊断手段。注入器采用气动发射技术，弹丸为１ｍｍ×１ｍｍ，１．２ｍｍ×１．２ｍｍ，１．５ｍｍ×ｌ．５ｍｍ圆柱体氢丸，丸速０．８～１．５ｋｍ／ｓ工作频率１～８Ｈｚ。     

LS2p型标准传声器的声中心测量

介绍了ＬＳ２ｐ型标准传声器的声中心测量。测量装置的自由场偏差小于０．１ｄＢ，坐标测距系统准确度优于０．０５％，分辨力为０．０１ｍｍ。声中心测量结果与ＩＥＣ／ＣＤ１０９４－３，２９（ｓｅｃ）２７９标准草案提供的数据进行比较，在２～２０ｋＨｚ频率范围内两者的声中心位置相差±０．１ｍｍ，而在２５ｋＨｚ和３１．５ｋＨｚ两频率分别有５８ｍｍ和１０．０ｍｍ的差别     

蓝色SrS：Ce薄膜电致发光矩阵屏

采用ＳｒＳ：Ｃｅ作为发光层制备了可用于彩色薄膜电致发光显示的较大面积的蓝色薄膜电致发光显示屏。非矩阵屏在１ＫＨｚ驱动时最高亮度是９００ｃｄ／ｍ２；矩阵屏亮度为３０ｃｄ／ｍ２；矩阵面积为４０ｍｍ×７５ｍｍ，象元数为８０×１５０线，象元面积为０３ｍｍ×０３ｍｍ。ＳｒＳ：Ｃｅ蓝色发光粉是采用Ｈ２法还原ＳｒＳＯ４得到的。对不同的合成方法及结构，Ｃｅ３＋浓度对ＰＬ性能的影响等进行了较系统的分析。     

腾龙AF28～300mm/F35～63LD非球面(IF)微距变焦镜头—— —支高质量的"超级标准变焦镜头

这是一支腾龙公司新推出的包括从广角到中焦的超高倍ＬＤ非球面（ＩＦ）微距变焦镜头,与去年推出的艺康ＡＦ２８～２００ｍｍ／Ｆ３５～５６ＡＬ（ＩＦ）以及宾得ＡＦ２８～２００ｍｍ／Ｆ３５～５６ＡＬ（ＩＦ）镜头比较,中焦段达到３００ｍｍ,足足延伸了１００ｍｍ。其主要特点：（１）高变倍比：１０７倍。（２）高清晰度：专业级像质。画面中心与边缘照度较均匀,各档光圈象质均优良。（３）小型轻量：外形尺寸８０４ｍｍ×９３６ｍｍ,重量５８５ｇ。（４）调焦方式：独特的内调焦方式,最短摄影距离达到０６ｍ（…     

钢铁无毒常温发黑剂

钢铁无毒常温发黑剂广东省东莞市轴承厂理化室（５１１７００）黄必来１主要成分ＣｌｌＳＯ。·ＳＨ。Ｏ３～５ｇ／ＬＮＩＳＯ。·７Ｈ。Ｏ０．８。１．２ｇ／Ｌ葡萄糖１．５～２．；召见冰醋酸１２ｍｌ／Ｌ催化剂２ｇ／Ｌ表面活性剂０．２～０．８ｇ／Ｌ２发黑Ｊ艺门）除...     

SOCl_2/TiCl_4引发体系的α-蒎烯/苯乙烯阳离子共聚反应研究 Ⅰ.SOCl_2/TiCl_4的共聚合性能研究

通过对ＳＯＣｌ２／ＴｉＣｌ４引发体系的α－蒎烯（Ｍ１）／苯乙烯（Ｍ２）共聚产物进行ＧＰＣ、１ＨＮＭＲ以及微臭氧化－薄层层析法等分析表征，证明该引发体系能在宽广的单体投料比范围内实现有效共聚。在确认仅生成共聚物的反应条件下，采用Ｍａｙｏ－Ｌｅｗｉｓ式积分法测得该体系在－３０℃、［ＳＯＣｌ２］＝２０ｍｍｏｌ／Ｌ、［ＴｉＣｌ４］＝６０ｍｍｏｌ／Ｌ、ＣＨ２Ｃｌ２溶剂中的竞聚率分别为苯乙烯ｒ２＝２．３１±０．１５；α－蒎烯ｒ１＝０．５２±０．０６。     

新型L—乳酸盐酶电极的研制

本文研制一种新型乳酸盐酶生物传感器，此传感器以复合酶ＮＡＤ＾＋与ＬＤＨ共固定在经ＣＮＢｒ活化的琼脂糖上作为敏感膜。用厚为０．３ｍｍ的粒状琼脂糖制成的敏感膜电极，其响应性能最佳。此乳酸盐酶电极测试的最优条件是：在ｐＨ８．５的Ｔｒｉｓ－ＨＣｌ缓冲液中进行，温度２５℃，此缓冲液中含１．５ｍｍｏｌ·Ｌ＾－１ＶＫ３电子介体。此电极的线性反应范围为０．０４￣２．１μｍｏｌ·Ｌ＾－１，每μｍｏｌ·Ｌ＾－１乳酸盐     

工业铯钟速率变化主要因素的探讨

上海天文台（ＳＯ）原子时实验室的４台工业铯钟１９８３～１９９０年连续工作了４或７年，它们的速率的长期变化与钟房的环境参数和性能参数的变化有关。本文根据有关数据，用不同的方法进行了分析，得到了一些明晰的结果。１）钟的速率变化受湿度的季节性变化影响：在相对湿度变化１％时，Ｃｓ２（１２６７）和Ｃｓ４（１４５７４）的速率变化分别为１．８９５ｕｓ／ｄ（２．２×１０－１４）和０．６１８ｎｓ／ｄ（７．１×１０－１５）。ＳＯ的原子钟房的相对湿度的年变化为２０％～８５％，引起这两台钟的速率年变化分别为１．４３×１０－１２和４．６５×１０－１４２）钟的速率变化受钟的离子泵电流参数的线性变化（从钟束管寿命的中期开始）影响：在离子泵电流参数变化１μＡ时，Ｃｓ３（１６１８０）和Ｃｓｌ（１２９９７）的速率变化分别为０．４３９ｎｓ／ａ（５．０８×１０－１５）和０．５５２ｎｓ／ａ（６．３９×１０－１５）。这两台钟的离子系电流参数的年变化分别为１６．４７μＡ／ａ和６．５３μＡ／ａ，引起的频率漂移率分别为１．６７×１０－１３／ａ（０．０３９５ｎｓ／ｄ２）和８．３×１０１４／ａ（０．０１９７ｎｓ／ｄ２）     

Fe73.5Cu0.8Nb2V1.2Si11.5B11新型纳米晶合金的研究

报道了Ｆｅ７３５Ｃｕ０８Ｎｂ２Ｖ１２Ｓｉ１１５Ｂ１１新型纳米晶合金的研究结果。透射电镜和穆斯堡尔谱研究表明，合金经８４３Ｋ，０５ｈ真空退火，形成由平均晶粒尺寸为１８ｎｍ左右的αＦｅ（Ｓｉ）相（～７８％）和剩余非晶组成的显微结构。合金的饱和磁感应强度为１４Ｔ，ｆ＝１ＫＨｚ时最大有效磁导率（μｅ）为７１８×１０－３Ｈ／ｍ，Ｐ１２／２ｋ２１ｋＷ／ｍ３，Ｐ１１／１０ｋ２１８ｋＷ／ｍ３，Ｐ０５／２０ｋ１５７ｋＷ／ｍ３，Ｐ０２／１００ｋ３００ｋＷ／ｍ３，矫顽力Ｈｃ≈１１Ａ／ｍ。合金具有明显的磁场处理效果，经纵向和横向磁场退火后，其Ｂ３０、α３０分别为１４４Ｔ，０９０和１３０Ｔ、０１。与Ｆｅ７３５Ｃｕ１Ｎｂ３Ｓｉ１３５Ｂ９相比，由于用Ｖ代替了部分Ｎｂ，提高了熔体流动性，改善了快淬合金带材的机械特性，降低了成本。     

三苯膦引发丙炔醇光聚合

本文首次应用三苯膦引发丙炔醇光聚合，制得黄色粉末状、具有共轭双键结构的聚丙炔醇。研究了该光聚合反应的动力学行为及机理。发现三苯膦与丙炔醇Ｃ≡Ｃ叁键能形成基态电荷转移络合物，在光照下引发自由基聚合。聚合速率方程为Ｒｐ＝ｋｐ［ＯＨＰ］（０．５）［ＰＰｈ３］（０．７），表观速率常数ｋｐ＝２．９０×１０（－５）Ｌ（０．２）·ｍｏｌ（－０．２）·ｓ（－１），聚合活化能Ｅａ＝２１．７８ｋＪ／ｍｏｌ。     

The Research of Anti-Wear Properties of Organomolybdenum Compounds in the Engine Oils

A four-ball tester was used to evaluate the anti-wear performance of three kinds of organomolybdemun compounds in the engine oils, i. e., molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate ( MoDTC), and sulphur and phosphorus freeorganomolybdeum (Molybdate). The results indicate that a low concentration of MoDDP doesn' t improve the anti-wear properties of the commercial engine oils, but a high concentration of MoDDP can obviously improve the anti-wear properties and the load-carrying capacity of the engine oils. MoDTC doesn' t improve the antiwear properties of the engine oils, but worsens the anti-wear properties of the oils. Signifi can timprove ment of frictional and wear characteristics is obtained with Molybdate added in the commercial engine oils and the formulated oils.     

Certification Becomes Important for the I Quality; and Safety Supervision of the Chinese Liquor Sector

The end of 2007, over 200 unit products of more than 80 Chinese firms have passed the quality grade certification for liquor products. These products involve distilled spirits, beer, wine, yellow wine, fruit syrup wine and others, and cover over 80% of the national top-branded liquor products.……     

Deposition and Coating Properties on CVD Tungsten

Surface characterization and microstructure studies are performed on chemical vapor deposited (CVD) tungsten coating. There is about 2 μm thickness diffusion layer of tungsten in the molybdenum substrate. The thermal shock test shows tungsten coating has good adhesion with molybdenum substrate, but the elements of oxygen and carbon in the tungsten coating have the bad affection to the adhesion. The result of high-temperature diffusion experiment is the diffusion rate from molybdenum substrate to tungsten coating is faster.     

Analysis of marine hydrobiont lipid extracts as possible cryoprotective agents

We studied a combined effect of the cryoprotectants both of lipid and carbohydrate origin at the presence of DMSO or without it on cell viability and the RNA synthesis in the embryonic mollusc and echinoderm cell cultures obtained at different developmental stages. Cryoprotective properties of exogenous lipids correlated with their thermotropic behavior. Lipid extracts from marine hydrobiontes, which thermal transitions are characterized by relatively small part of calorimetric thermogram area lying at temperatures above 0 °C (6–18%), were found to possess a considerable cryoprotective activity. The results are discussed in relation to the prediction of the cryoprotective activity of lipid extracts for marine animal cells. In addition, it was found that marine invertebrate cells can be cryopreserved without DMSO at the presence of trehalose and lipid extracts of some marine hydrobiontes.     

Low-Temperature Properties of Silver

Pure silver is used extensively in the preparation of high-temperature superconductor wires, tapes, films, and other configurations in which the silver not only shields the superconducting material from the surrounding materials, but also provides a degree of flexibility and strain relief, as well as stabilization and low-resistance electrical contact. Silver is relatively expensive, but at this stage of superconductor development, its unique combination of properties seems to offer the only reasonable means of achieving usable lengths of conductor. In this role, the low-temperature physical (electrical, thermal, magnetic, optical) and mechanical properties of the silver all become important. Here we present a collection of properties data extracted from the cryogenic literature and, to the extent possible, selected for reliability.     

Early ironwork in Biscay: Survey,excavation, experimentation and materials characterization. An integral study of the mountainside ironworks (ferrerías de monte or “haizeolak”)

ABSTRACT

The production of iron in Biscay (Basque Country, Spain) has been a hallmark of this territory of the North of the Iberian Peninsula throughout its history. The Archaeology team of the Basque Country Mining Museum has spent 13 years, so far, studying the origins of this activity through the evidences left at the old pre-hydraulic iron production workshops known as mountainside ironworks (ferrerías de monte) or haizeolak. It has catalogued 170 archaeometallurgical sites of this type in Biscay, and the archeological excavation of some of them has led to the knowledge of the different stages of the production process that took place in these workshops. The team has also experimentally reproduced the work carried out in a mountainside ironworks from the High Middle Ages, and it has currently started the characterization process of this type of activity through the study of the collected materials.     

Mechanism Study on the Wear of CrAlTiN Coated High-Speed Steel Twist Drills Under Dry Cutting Conditions

As demands about environment protection are growing up, dry cutting technology is getting more and more concerns from all over the world. Main works performed here are study on dry cutting performances and wear mechanisms of M2high-speed steel (HSS) twist drills with CrAlTiN multicomponent coatings, which was deposited using magnetron sputter ion plating system, in drilling 45 and 30CrMnSiA steel, and their comparisons to those in drilling the same steel but using monolayer CrN and commercial TiN coated drills. Drilling performances of drills are evaluated mainly through the measurements of width on outer corner flank land and the cutting forces. Results show that performances of CrAlTiN coated drills are better than those of monolayer CrN and TiN coated drills. In drilling 45 and 30CrMnSiA steel, the average tool life of the CrAlTiN coated drills are 17.2 and 11.8 times higher than those of the uncoated drills. Observing wear of the drill with scanning electronic microscope, results show that there is no crack or spallation of the CrAlTiN coatings in wear zones. Main mechanism of the wear here is adhesion.     

Study on Bond Ability of Arc-Spraying Coatings with Different Surface Pretreatment on Cast-Iron

Arc spraying coatings are widely used in various applications, but uncommon in cast iron substrate. Different surface pretreatment technology is tested on substrates of gray cast iron. Surface roughness and residual stress were measured by TR200 and X-ray diffraction analyzer. Influence of different surface pretreatment methods ( dry blasting and fusebond) on roughness and residual stress was analyzed. The arc-sprayed coatings of wire 3Cr13 (φ2mm) on gray cast iron substrate is studied. The microstructure and interface of bonding layer were observed by SEM. The bond strength was taken by tensile test. Results show that bond strength with grit blasting is higher than fuse-bond; it is feasible to make wire 3Cr13 coating with arc spraying on cast iron substrate roughened by grit blasting.     

Structural Characteristics of TiO2 Ceramic Coating by Micro-Plasma Oxidation

TiO2 ceramic coatings with thickness of 20 μm were formed on the surface of pure titanium by micro-plasma oxidation. Their micro-structures were investigated by by using X-ray diffraction and their surface images were detected by using scan electronic microscope. There were three kinds of TiO2 coatings, pure anatase type TiO2 phase, mixed phases consisted of rutile type TiO2 phase and anatase type TiO2 phase, pure rutile type TiO2 phase. The coating surface with the pure anatase type TiO2 phase is rough, while the coating surface with the pure rutile type TiO2phase is smooth. The upper coating surface with the mixed type TiO2 phases is anatase type TiO2 structure and the subsurface of the TiO2 coating is rutile type TiO2structure.     

Evaluation of fatigue life of steel using steel grain size

The insightful discussion of the relationship between the construction of metallographic and fatigue life and proposition of mathematical relationships describing this relationship was conducted in the paper. This paper presents a method for estimating the fatigue life, based on the construction of the microstructural material taking into account the grain size and the participation of ferrite and pearlite phase.