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文摘１英国的烟花标准及其应用（英文）Ｃ９２３６２９７０ＤＵＣＫＷＯＲＴＨＡＲ（ＨｅａｌｔｈａｎｄＳａｆｅｔｙＥｘｅｃｕｔｉｖｅ．Ｍｅｒｓｅｙｓｉｄｅ，ＧＢＲ）：Ｋ９２０２０４ＰｒｏｃｌｓｔｉｎＳｙｍｐＦｉｒｅｗ１９９２（ＣＡＮ）１１２～１１９（１９９...     

偶联剂KH和聚合物PVA在硫铝酸盐─MDF水泥中的作用机理

以硫铝酸盐水泥为基材，采用有机聚合物ＰＶＡ，并且在ＭＤＦ（Ｍａｃｒｏ—Ｄｅｆｅｃｔ—Ｆｒｅｅ）水泥中添加偶联剂ＫＨ，制备出抗折强度大于１７０ＭＰａ，抗压强度达２４０ＭＰａ的新型ＭＤＦ水泥、同时，借助于Ｘ射线光电子能谱分析（ＸＰＳ），红外光谱分析（ＩＲ）等测试手段研究了偶联剂ＫＨ和聚合物ＰＶＡ在硫铝酸盐－ＭＤＦ水泥中的作用机理     

新型动静压挤压油膜阻尼器减振特性的实验研究

以小孔节流的新型动静压挤压油膜阻尼器（ＨＳＦＤ）为例，从实验上研究了ＨＳＦＤ对柔性转子系统振动的控制能力，并与传统挤压油膜阻尼器（ＳＦＤ）的减振特性进行了比较。结果表明了与ＳＦＤ相比，ＨＳＦＤ能够明显地改善ＳＦＤ的非线性特性，是一种具有良好减振特性的阻尼元件。     

三款柯尼卡相机介绍

ＫｏｎｉｃａＺｏｏｍＦＲ７３５ＤＫｏｎｉｃａＺｏｏｍＦＲ７３５Ｄ是柯尼卡１２８周年纪念机种。该相机是去年１２月中旬与Ｋｏｎｉ ｃａＬｅｘｉｏ７０Ｄ同时推向市场的 ,其外型与Ｌｅｘｉｏ７０Ｄ有较大的区别 ,Ｌｅｘｉｏ７０Ｄ以精致、小巧为主要特征 ,而ＦＲ７３５Ｄ是以流线型加结实的外形为主要特征 ,它是ＫｏｎｉｃａＺＵＰ-７０Ｄ的改进型。ＦＲ７３５相机有７种模式可供选择 ,分别是 :自动闪光、红眼减轻、强制闪光、强制不闪光、自拍、 １ ５曝光补偿、远景拍摄。镜头为 :３５ｍｍＦ５ ２～７０ｍｍＦ９ ８（５组５片）的变焦…     

K_2NbOF_5－MF_3系玻璃的结构及电性质

研制了Ｋ＿２ＮｂＯＦ＿５－ＭＦ＿３（Ｍ＝Ａｌ、Ｇａ）新体系氟化物玻璃，测定了玻璃的特征温度、Ｒａｍａｎ光谱和电导率，玻璃中Ｎｂ￣（５＋）、Ａｌ￣（３＋）、Ｇａ￣（５＋）分别以ＮｂＯＦ、ＡＩＦ、ＧａＦ八面体形式存在，玻璃的电导率随ＡｌＦ＿３含量的增加而增加，ＡｌＦ＿３含量达到３０ｍｏｌ％时，Ａｌ￣（３＋）除ＡＩＦ八面体外，还有ＡｌＦ四面体结构出现，同时电导率降低，Ｆ￣－阴离子是主要的导电离子，７５Ｋ＿２ＮｂＯＦ＿５·２５ＡｌＦ＿３玻璃的电导率在１９６℃时，σ＝１．０２×１０￣（－２）Ｓ·ｃｍ￣（－１）。     

无Co混合导电型陶瓷透氧膜的制备和性质研究

首次合成了Ｓｒ１０－ｎ／２ＢｉｎＦｅ２０Ｏｍ（ｎ＝２，４，６，８，１０等）系列氧化物透氧膜，它们具有较高的透氧能力，其中，样品ｎ＝１０在１１００Ｋ时的透氧率为０．９０ｍｌ（ＳＴＤ）／（ｃｍ２·ｍｉｎ），比Ｓｒ１－ｘＢｉｘＦｅＯ３高约两倍．Ｓｒ１－ｘＢｉｘＦｅＯ３（ｘ＝０．１，０．３，０．５）系列的透氧率随Ｂｉ含量增加而增大．通过两个系列氧化物的ＸＲＤ和化学组成的对比，发现Ｂｉ离子含量和晶格空位浓度对透氧能力大小起决定性作用．     

CSF－1R部分基因在大肠杆菌中表达、抗融合蛋白血清制备及丝氨酸／苏氨酸磷酸化的初步研究

鼠巨噬细胞集落刺激因子－１受体（ｍＣＳＦ－１Ｒ）部分序列与质粒ｐＧＥＸ－２Ｔ谷胱苷肽转移酶（ＧＳＴ）融合，融合蛋白ＧＳＴ－ＣＤ－Ｐｓｔ（胞浆区），ＧＳＴ－ＣＴｅｒｍ（Ｃ－末端）和ＧＳＴ－ＫＩ（激酶插入区）成功地在大肠杆菌ＪＭ１０９株表达。初步结果指出：（１）ＧＳＴ－融合蛋白在体外激酶分析中可以作为底物；（２）由ＰＫＡ导致的磷酸化可能具有生理学意义；（３）ｍＣＳＦ－１Ｒ被ＣＫＩＩ磷酸化。３２Ｐ标记ＧＳＴ－ＣＤ－Ｐｓｔ的磷酸氨基酸分析证实，ｍＣＳＦ－１Ｒ的胞浆区丝氨酸上被磷酸化，已制备抗ＧＳＴ－ＣＴｅｒｍ，ＧＳＴ－ＫＩ和ＧＳＴ－ＣＤ－Ｐｓｔ兔抗体。抗血清的筛选通过野生型３２Ｄ－ＣＳＦ－１Ｒ转染子免疫沉淀进行。     

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文摘１工业炸药发展现状及其试验方法Ｓｈｖｅｄｅｖ，Ｋ．Ｋ，Ｆｉｚ．Ｔｅｋｈ．Ｐｒｏｂｌ．Ｒａｚｒａｂ．Ｐｏｌｅｚｅｎ．Ｉｓｋｏｐ．（ＰｈｙａｉｃａｌａｎｄＴｅＣｈｎｉｃａｌＰｒｏｂｆｅｒｎｓｏｆＭｉｎｉｎｓＯｆＭｉｎｅａｌｓ—一矿物开采的物理和技术问...     

热孔法表征特种高分子合金超滤膜的孔径

用热分析方法（ＤＳＣ）对磺化聚砜（ＳＰＳＦ）与聚醚酮（ＰＥＫ）高分子合金超滤膜的孔径和孔结构进行了研究。由实验得到热谱图，经计算得到不同合金比（ＳＰＳＦ／ＰＥＫ）的超滤膜孔径及孔径体积分布。研究结果表明，在一定条件下，ＳＰＳＦ／ＰＥＫ以不同的比例混合时，其膜的孔径分布范围在５￣１５ｎｍ，平均孔径在６￣９ｎｍ之间；当合金比（ＳＰＳＦ／ＰＥＫ）等于或大于４：６时，所制得的超滤膜对聚乙二醇（ＰＥＧ，Ｍｗ     

耐辐射聚丙烯吹塑饮料瓶的生产

耐辐射聚丙烯吹塑饮料瓶的生产宋建民ＰＲＯＤＵＣＴＩＯＮＯＦＲＡＤＩＡＴＩＯＮＲＥＳＩＳＴＡＮＴＰＰＢＬＯＷＭＯＵＬＤＢＯＴＴＬＥＳＦＯＲＳＯＦＴＤＲＩＮＫＳ￥ＳｏｎｇＪｉａｎｍｉｎＡｂｓｔｒａｃｔ：Ｃｈｉｎａｉｓｎｏｔｃａｐａｂｌｅｔｏｐｒｏｄｕｃｅ...     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

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.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

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...     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

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.     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

A study of centrifugal cast high boron high speed steel

In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M₂(B,C), (W,Mo)₂(B,C), M₃(B,C), M₂₃(B,C)₆ type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm². The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K₁ mill housing of bar mill.     

Thixotropy of Systems with Shear Thinning and Plastic Flow Behavior

The definition of the thixotropy is a decrease in viscosity with time in shear and a subsequent recovery of viscosity after the shear deformation is removed.We ...