梅特勒-托利多NewClassic系列天平全新上市——传承经典，超越品质

梅特勒-托利多全新NewClassic系列天平即将上市，NewClassic系列天平是面对各种业务挑战而开发的新一代分析和精密天平，上市后将逐步替代现有的经典B系列和L-IC系列天平。“Classic”表示延续了梅特勒-托利多作为称量领域的领先者，长期以来积累的传统和先进技术，以及倍受客户赞赏的天平系列和型号；而“New”标志着梅特勒-托利多不断创新的能力：全新的研发平台，众多新的产品特性和新的功能设计。     

佳能EOS系列照相机的AE系统

佳能ＥＯＳ系列照相机的ＡＥ系统史焕佳能（Ｃａｎｏｎ）ＥＯＳ系列照相机的共同开发思想是“更简便地拍摄出更完美的照片”。为了实现这一开发思想，ＥＯＳ系列照相机采用了精密的机械技术，精密的光学技术、先进的电子技术，引进了评估测光、自动聚焦等重要的自动化功能...     

出砂油藏整体提液及出砂差异研究

针对永安油田部分单元存在不同程度的出砂现象，结合出砂油藏地质特点，找出影响出砂的主要因素，“对症下药”通过完善定向井防砂技术，攻关水平井、侧钻井防砂技术，逐渐形成了“3大系列、10小项”的防砂工艺系列，提高了出砂油藏的开发水平。     

气相色谱仪的发展轨迹与趋势

文章以岛津公司系列气相色谱仪系列为例，从电子、机械、设计思想几个方面讲述其技术进步的发展轨迹，并预测了今后气相色谱仪的发展趋势。     

质量管理标准的新思考——访ISO／TC176主席盖瑞·科特博士

本刊记者：我们都知道，ISO／TC176是ISO技术委员会中最重要和最具影响力的技术委员会之一，其制定的ISO9000族系列标准可以说家喻户晓，是ISO国际标准推广应用的成功典范。请您谈谈ISO／TC176的范围。以及ISO9000族系列标准对全球产生了什么样的影响。     

徕卡的纪念性相机

自Ur型诞生90年以来，及徕卡相继以此为起点，由LSM(leica Screw Mount徕卡螺口座)系列、M系到发展至R系列，进而到今日的数码系列、不论在哪个技术时代，德卡总是“领袖群伦”、与时俱进地起着相机业界排头兵作用。     

美能达第四代自动调焦单反照相机α－si系列特色

在美能达推出α系列首机──“α－７０００”自动调焦单镜头反光照相机至今已达１０周年及其第四代α－ｓｉ系列机种基本齐备之际，本文特对α－ｓｉ系列五个机种的主要特色作一次扼要的介绍，使读者了解α－ｓｉ系列３５毫米自动调焦单反相机主要技术特性，并供选购时参考。     

企业要积极实施GB／T 19000—ISO9000系列标准,推行认证制度

企业要积极实施ＧＢ／Ｔ１９０００－ＩＳＯ９０００系列标准，推行认证制度杨世英（大同矿务局计量处）一、ＧＢ／Ｔ１９０００－ＩＳＯ９０００系列标准的构成和作用该系列标准，是由国际标准化组织ＩＳＯ／ＴＣ１７６技术委员会在总结世界上工业发达国家质量管理经验基...     

美能达第四代自动调焦单反照相机α—si系列特色

在美能达推出α系列首机－－“α－７０００”自动调焦单镜头反光照相机至今已达１０周年及其第四代α－ｓｉ系列机种基本齐备之际，本文特对α－ｓｉ系列五个机种的主要特色作一次扼要的介绍，使读者了解α－ｓｉ系列３５毫米来自动调焦单反相机主要技术特性，并从选购时参考。     

控制领域千里马——SYAC-CFBB系列自控装置

CFBB技术在国际上已得到广泛的推广。目前，国内对于CFBB技术缺少有效的控制，该项技术故障频频。SYAC-CFBB系列自控装置具有其自身独特控制策略，可以弥补该项技术的控制需求，满足了CFBB的技术要求。     

From Industry 4.0 to Research 4.0. Development of High Performance Fibers in the Light of Digitization

We associate a variety of innovations with the term ＂Industry 4.0＂. The pioneer of many 4.0 modifications forms the basisfor the trend towards the integrated di...     

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.     

Roman iron and steel: A review

ABSTRACT

The production of ferrous metal increased during the Roman Late Republican period, Principate and Empire. The direct bloomery process was used to extract the metal from its ores using slag-tapping and slag-pit furnaces. The fuel was charcoal and an air blast was introduced by bellows-operated tuyères. Iron formed as a bloom, often as a spongy mass of metal, which contained impurities from the smelting process, including unreacted ore, fuel, slag and fragments from the furnace walls, while the metal was often inhomogeneous with varied carbon contents. Blooms were either smithed directly into bars or ingots or they were broken up, which also allowed the removal of gross impurities and a selection of pieces with similar properties to be made. These could then be forge-welded together and formed into characteristically shaped ingots. Making steel in the furnace seems to have been achieved: it depended on the ore and the furnace and conditions within it. Surface carburization was also carried out. Iron and steel were used extensively in construction and for tools and weapons. Fire welding was often used to add pieces of steel to make the edges of tools and weapons, which could be heat-treated by quenching to harden them.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Synthesis of Alumina-Zirconia Nanocomposites by Solgel Process

Al₂O₃-ZrO₂ nanocomposites were developed starting with the solgel process. Composite alumina-zirconia nanopowders were synthesized from metallorganic precursors (Aluminium secondary butoxide and zirconium Iso propoxide) using the solgel process. The parameters affecting the synthesis—solvent, concentration of precursor, R/H ratio (i.e., dilution of water in solvent)—were varied as also the temperature and pH. BET and TEM were used to measure nanosize. Diffuse reflectance spectroscopy and also qualitative optical absorption led to identical particle size estimate. The variation of process parameters was used to study the effect and interdependence of process parameters. Artificial Neural Networks was used to rigorously analyze the process. Although this led to confirmation of interdependence of parameters, the presence of a single overwhelming solvent variable was also established. Then the optimal process was used to synthesize more nanopowder. To produce bulk nanocomposite the nanopowders were sintered by varying the temperature and time period. The sintered lithoids were probed with a vickers hardness tester to measure elastic modulus, hardness, and fracture toughness. The results showed high elastic modulus, modest hardness, and very high fracture toughness.     

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.     

Friction Stir Processing Strategies for Uniform Distribution of Reinforcement in a Surface Composite

Friction stir processing (FSP) is an important technique for preparing surface composites. Fabricating defect-free surface composites with uniform particle distribution by FSP is a challenging task. In this study, silicon carbide particles reinforced AA5083 alloy surface composites was fabricated using different FSP strategies including variation in process parameters, dual-tool processing and tool offset overlapping. Material flow of the processed material with reinforcement particles demonstrated that the distribution of particles was influenced by the stirring action of the probe as well as the extrusion of the plasticized material due to the movement of the tool. Process parameters, particularly rotational speed, showed a dominant influence on the distribution of silicon carbide particles.     

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.