欧盟新的共同贸易政策对我国石化行业的影响

简单介绍了欧盟新的共同对外贸易政策，包括市场准入战略，反倾销战略，新普惠制，统一技术标准与法规等。着重探讨了欧盟及共同对外贸易政策对我国石化行业造成的影响，并提出了应对策略。     

基于VXI虚拟仪器的EEC加力通道检测系统设计

针对某型发动机综合电子调节器系统复杂、排故不便的缺点,设计了该电子调节器的检测系统,研究了虚拟仪器技术在该复杂测控系统中的应用,介绍了加力通道系统的硬件结构设计、软件结构设计以及测控功能的实现.实验表明,该系统能够迅速准确地对控制系统进行检测和维护,具有较广的应用范围,可用于控制器的数字化设计与研究.     

U.v. absorbers in sun cosmetics 1978

A comprehensive survey has been carried out to establish which sun-screen agents are used by the cosmetics industry in Holland. During 1978, some 200 cosmetic sun preparations, composed of forty-eight brands, were purchased and analysed to determine which u.v. absorbing compounds were present. Most of those found were identified and quantified by means of thin layer chromatography and u.v. spectrometry. A basis for this work was the proposal by the European Cosmetic Manufacturers to produce a positive list of u.v. absorbers. It was felt that by carrying out this survey, some priority could be placed on the most popular materials used by the industry. When comparing those found with the European list of u.v. absorbers 1978, only twenty-four of the sixty compounds listed could be identified in the samples. The six most frequently used were found to be:

• 1 2-Ethylhexyl.p.methoxycinnamate (nineteen brands).
• 2 2-Phenylbenzimidazole.5-sulphonic acid (eleven brands).
• 3 2-Ethoxyethyl.p.methoxycinnamate (nine brands).
• 4 3 (4′Methylbenzylidene)D,D,L-camphor (seven brands).
• 5 3-Benzylidene.D,L-camphor (six brands).
• 6 2-Hydroxy.4-methoxy.benzophenone (six brands).

Usage levels varied from 0.4% up to 6.8%. Twenty-two products used a combination of two, and four products a combination of three sun-screens. Les filtres u.v. dans les produits anti-solaires 1978     

某型涡扇发动机综合电子调节器测控系统设计

综合电子调节器是发动机控制系统的核心部件，它与外部传感器、执行机构、控制软件等一起完成对发动机的全权限控制。文章研究了虚拟仪器技术在该复杂测控系统中的应用。介绍了系统的硬件结构设计、软件结构设计、虚拟功能单元的构造及测控功能的实现与重构。测控系统能完成综合电子调节器静态和动态过程的测控，且具有高测试精度、高可靠性、人机交互性好等特点，可用于控制器的数字化设计与研究。     

FADEC硬件在回路测试系统设计

发动机全权限数字电子控制器(FADEC)对航空发动机进行实时在线控制,其控制效果直接影响发动机的安全运行.硬件在回路测试系统是FADEC设计与验证的重要手段之一.设计了一种FADEC硬件在回路测试系统,该系统包括发动机电子控制器(EEC)、接口模拟器、发动机和飞机模型及其显示系统.该系统可以实时模拟发动机和飞机的各种传感器、执行机构信号,对FADEC进行高效、全面的验证,主要包括控制规律、EEC的接口电路、自检测、容错和重构策略等.通过大量的试验测试表明,该系统能够实现实时、稳定、高效的闭环仿真,达到了验证控制算法和控制逻辑的要求.     

Lipid determination in fish meal: An investigation of three standard methods applied to stabilised and non-stabilised anchovy meals at increasing stages of maturity

An investigation into the relative merits of three standard laboratory procedures for lipid determination in fish meal is described. It was found that the amount of lipid extracted by these methods from both stabilised and non-stabilised anchovy meals decreased on storage of the meals. The decrease in lipid yield as a function of the storage time may be approximated by straight lines, which reveal clear distinctions between the three methods as well as the two types of meal. The cold Bligh and Dyer method gave consistently higher lipid yields than either the hot hexane or a modified EEC method, and the decrease in the Bligh and Dyer lipid content with storage was less than that found in the hot hexane or the EEC lipid content. This difference was more pronounced in the non-stabilised than in the stabilised meals. No fundamental difference between the hot hexane and the modified EEC lipid extraction method could be established since the hydrolysis step in the EEC procedure does not de polymerise the lipid portion which is unextractable by hot hexane. The effectiveness of the antioxidant ethoxyquin in protecting polyunsaturated fatty acids in anchovy meal from oxidation is demonstrated.     

环境温度和地磁场对彩色显示管色纯的影响分析

针对环境温度及地磁场对彩色显示管色纯的影响，进行了分析研究。通过实验找出了17in纯屏彩色显示管色纯随环境温度及地磁场变化的规律。结果为温度每变化l℃。显示管ECC的最大变化量接近1μm；横向，轴向，垂直三个不同方向地磁场的变化引起ECC的变化有各自特殊的方向性。实验结果有效地为控制产品质量提供了依据，确保了产品质量稳定提高。     

欧盟农药风险评价发展现状

论述了农药风险评价的必要性和遵循原则.介绍了欧盟国家现行的农药风险评价模型和指标体系.以农药风险评价指标POCER为例,阐述了建立风险指标的标准操作程序,以及如何表征农药施用过程中和施用后其残留对环境(土壤、水体、鱼类等)、人体健康(经由饮食、皮肤、呼吸等途径接触)的风险.对我国农药风险评价工作提出了可行建议:直接引进国外已较为完备的评价模型,基于某一农业示范区域对模型加以修正,逐步实现评价模型的推广应用.     

基于APCI总线的电子调节器检测仪研制

基于虚拟仪器技术的发动机电子调节器检测仪,可以完成“电子调节器检测”、“发动机试车参数显示”以及“传感器检测”三项检测功能。检测仪硬件模块主要包括6块APCI板卡和两块信号调理板,软件模块的测试库编程技术和模块化设计完全满足性能优化和功能扩展的要求。试验证明,该型检测仪满足工程需求,对提高EEC快速排故和综合检测的自动化程度,有很大的帮助。     

A critical investigation of a number of different methods of lipid determination in fish meal,with particular emphasis on corrections required in these determinations

A critical study was made of a number of lipid extraction methods on stabilised brown fish meals and on white fish meal. By analysing the lipids it was shown that in all procedures proteinaceous material was extracted and an attempt was made to correct for this non-lipid material. On the basis of the results obtained it seemed that the Bligh and Dyer method gave the highest yield of lipid. In addition it was found that the EEC procedure needed the application of a correction factor to account for the losses sustained in the hydrolysis step.