应用ICP-MS测定葡萄酒中微量元素

应用电感耦合等离子质谱法（ICP-MS）葡萄酒中Mg、Ca、Fe、Mn等11种微量元素的含量。样品用1％硝酸稀释后直接测定。其结果方法的线性范围宽，线性相关系数均〉0．999。测定试样中11种元素的相对标准偏差（n=7）均低于6．O‰各元素的加标回收率均在80．5％～102％。结论：方法操作简便、快速、灵敏、准确，不同产地的葡萄酒中均含有较丰富的微量元素。     

ICP-AES法同时测定芋头中的微量元素

采用电感耦合等离子体发射光谱法同时测定自塔芋头中Mg、P、K、Fe、Cu、Zn、Si、Co等8种微量元素的含量。该方法简单、快速、灵敏度高，准确性好。回收率在88．0％～114％之间之间，相对标准偏差小于2．9％。实验结果证明：芋头中含有丰富的对人体有益的K、P、Mg、Fe等元素。     

世界香料地图

1．日本：百合 GIVENCHY ANGE ou DEMON纪梵希“魅幻天使”优雅灵性的百合花香，是从这个岛国飘逸出由花朵和蜜油调和成的性感香调．有如东方女子走路时的婀娜姿态。     

萨索商品代肉鸡生产性能测定

通过测定特定饲养条件下萨索系列商品代肉鸡生产性能，结果表明：63日龄，红羽萨索肉鸡成活率100％，体重2．33kg，饲料报酬2．36：芦花萨索肉鸡成活率99．5％，体重2．14kg，饲料报酬2．26：黑羽萨索肉鸡成活率99．O％，体重1．95kg，饲料报酬2．31。     

Fe3B基纳米复合永磁材料的微结构和性能

利用差热(扫描)分析、X射线、透射电镜、振动样品磁强计研究了添加Co、Dy对Fe3B／Nd2Fe14B 纳米复合永磁材料的微结构和性能的影响．结果表明：添加适当的微量元素可以提高Nd4．5Fe77B18．5纳米复合永磁材料的内禀磁性，改进微结构，从而提高材料的永磁性能．在Nd4．5Fe77B18．5中添加1％-3％(原子分数)的Co、Dy明显地降低材料的晶化温度和最佳热处理温度、提高了2：14：1相的居里温度、改善了纳米复合永磁材料的微观结构，从而提高材料的永磁性能．与Nd4．5Fe77B18．5相比，Nd3．5Fe74Co3DylBl8.5的永磁性能为：Br=1.06T，jHc=328kA／m，(BH)max=108．9kJ／m^3，分别提高了26％，17％和104％．     

微波消解-ICP-AES／ICP—MS测定大米中微量元素

采用微波消解技术,电感耦合等离子体光谱（ICP-AES）和电感耦合等离子体质谱（ICP—MS）测定了分别产自辽宁、四川、湖南三地的大米中21种元素B、Ba、Ca、Cd、Cu、Fe、K、Mg、Mn、Na、P、S、Sr、Zn、Co、Ni、Cr、Mo、Pb、Li、Cs。所有元素标准曲线回归方程线形系数均大于0．999,各元素相对标准偏差（RSD）均小于5．31％（测定次数n=4）,加标回收率为96．6％-110．6％,方法检出限：ICP-AES为0．0048-0．33μg·mL-1,ICP-MS为0．022-0．192ng·mL-1。用国家一级标准物质大米（GBW10010）验证了方法的准确性,测定值与推荐值相符,实验表明,P、S、K、Mg、Ca、Na、Zn、Mn、Fe、Cu在大米中含量较高。此方法简便、快速,适用于大米等粮食作物中微量元素的测定。     

研究探讨气相色谱法测定阿莫西林钠中残留溶剂

研究探讨气相色谱法同时测定阿莫西林钠中残留溶剂二异丙胺和三乙胺残留量的方法。方法：采用内标法自动进样,在非极性弹性毛细管柱上进行分离,效果良好。定量准确,便于操作。结论：平均回收率：三乙胺95．9％-97．7％;二异丙胺97．1％-100％;变异系数：三乙胺1．2％,二异丙胺1．9％。     

电感耦合等离子体发射光谱法测定钯碳催化剂中钯含量

试样用王水溶解,于电感耦合等离子体原子发射光谱仪波长324．270（103）nm,342．124（98）nm处测定钯量。测定范围：1％-10％。本法试验了测定条件及试样分析,RSD-0．76％-0．83％,回收率98．4％-101．4％,适用于钯碳催化剂中钯的测定。     

制备复方环丙沙星膜剂及含量测定方法研究

目的：制备复方环丙沙星膜剂并制定该制剂的含量测定方法。方法：以聚乙烯醇-124、羧甲基纤维索钠为成膜材料,制备复方环丙沙星膜剂。采用等吸收双波长紫外分光光度法进行含量测定。结果：环丙沙星浓度测定的线性范围为4-9gmL^-1,r=0．9997（n=6）,平均回收率98．06％,RSD为1．04％替硝唑浓度测定的线性范围8～18gmL^-1,r=0．9989（n=6）,平均回收率99．17％,RSD为0．82％。结论：复方环丙沙星膜剂制备工艺可行,含量测定方法准确可靠,可达到质量控制的目的。     

微波消解-氢化物原子荧光光谱法同时测定金华火腿中砷和汞研究

为提高金华火腿中砷和汞的检测水平，建立了微波消解-氢化物原子荧光光度法同时测定火腿中砷和汞的方法。确定了微波消解样品的条件，优化了仪器的最佳工作参数。在最佳的试验条件下，0～10．0μg．L^-1砷和0～2．0μg．L^-1汞标准溶液，标准曲线具有良好的线性，砷、汞的检出限分别为：砷0．073μg．L^-，汞0．0055μg．L^-1；回收率砷在90．0％。110．0％之间、汞在95．0％～1．10．0％之间；相对标准偏差砷为1．26％，汞为3．08％。     

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.……     

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...     

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.     

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.     

Brainstorming for ISO Strategy 2016-2020

正Responding to ISO’s appeal for survey for the to-be-developed ISO Strategy Plan for 2016-2020,SAC hosted a special workshop over the needs and comments of various fi elds on June 8 in Beijing.The workshop was attended by ISO President-elect and Ansteel General Manager Zhang Xiaogang,SAC Vice-Administrator Yu Xinli,and 30 experts from