高灵敏数字显示溶氧监测仪的研制

论述了高灵敏度数字显示溶氧监测仪的电路设计、温度补偿、数模转换以及该仪表的性能。经实验和实际使用表明，该仪器运行可靠、精度高、操作简单。实现了溶氧监测仪的升级换代的目标。     

原位时间分辨拉曼光谱研究电化学氧化还原和吸附过程

原位时间分辨拉曼光谱研究电化学氧化还原和吸附过程李五湖，高劲松，钟起玲，田中群（厦门大学固体表面物理化学国家重点实验室化学系厦门３６１００５）Ｉｎ－ＳｉｔｕＴｉｍｅＲｅｓｏｌｖｅｄＲａｍａｎＳｐｅｃｔｒｏｓｃｏｐｉｃＳｔｕｄｉｅｓｏｎＥｌｅｃｔｒｏｃ...     

质构仪在果实品质测定方面的研究与应用

因其测定结果的高度灵敏性和客观性,质构仪越来越频繁的应用到食品的物性研究及检测当中。目前在果蔬测定中只局限于单一的质构参数的测定与研究,通过对质构仪在当前水果方面应用概况的了解及分析,提出了质构仪测定方法今后在果蔬测定方面的应用,并对其今后的发展方向进行了预测和展望。     

One Pot Cooking of Rice Grains for Preparation of Rice-Gel Samples Using a Small-Scale Viscosity Analyzer: Small-scale Rice-gel Preparation from Grains

Rice-gel prepared by the following three steps: rice grain cooking, shearing of the cooked rice, and cooling for gel formation, is expected as a novel food ingredient for modification of various food products such as bread and noodles. To meet the demand for high-throughput systems for research and developments on the new rice gels, herein we established a mini-cooking system for preparation of rice gel samples from grains using a small-scale viscosity analyzer (Rapid Visco Analyzer; RVA). Polished rice grains (4 g) were cooked with 22 mL of water in a canister, and the paddle equipped in the canister was rotated at 2,000 rpm for 30 min (80 °C was used as a representative) to shear the cooked rice. The sheared paste was cooled to 10 °C at 160 rpm, and the initial gelation property was evaluated by viscosity analysis within the RVA. Alternatively, the sheared paste was transferred to an acrylic mold and kept at 4 °C for 0, 1, 3, and 5 days for determination of the hardness with a compression test. Compressive forces required to penetrate 20 % thickness for three tested rice cultivars were measured, and the trend of the value shifts during preservation is similar to the corresponding trend obtained in 300-g grain scale laboratory tests, whereas the individual values were halved in the former. This small cooking method could offer a useful assay system for a rapid evaluation in the breeding programs and in the high-throughput screening of additives for the modification of properties.     

炼油装置在线质量分析仪表的应用

在线质量分析仪表是炼油装置中应用的主要仪表之一。本文主要介绍它的原理和结构，综述国内外制造和应用的现状，指出我国和先进国家的差距，并就充分发挥在线质量分析仪表的作用发表一些建议。     

尿碘分析仪的研制与开发

采用离子色谱法原理研制和开发尿碘自动分析仪,介绍仪器的原理、结构、应用.     

电解质分析仪校准方法

电解质分析仪是临床检验中的常用仪器,为了保证电解质分析仪检测结果的准确性和可靠性,我们通过大量实验和系统研究,初步建立了一套电解质分析仪的校准方法。文中对电解质分析仪的工作原理和校准方法进行了详细的介绍。     

热中子三轴谱仪的性能模拟及其参数优化

热中子三轴谱仪(TTAS)是利用非弹性散射测量材料激发态信息的重要实验手段。论文基于Mc Stas中子装置模拟程序对中物院拟建的热中子三轴谱仪的各项参数进行了系统的模拟和优化。研究表明,双聚焦单色器采用15行×11列的阵列、总面积为260 mm(宽)×200 mm(高)时可最大限度地提高中子束流强度,单晶片采用34'的镶嵌度可提高反射中子强度,速度选择器螺旋角最佳值为10.7°。该项模拟研究为热中子三轴谱仪的设计和建设提供了良好的基础和优化的方案。     

氮氧化物气体分析仪

本文以ＴＥ公司的氮氧化物气体分析仪为例,详细分析了其工作原理,多年来的发展变化,仪器使用过程中的质量控制,以及仪器的日常维护和故障维修,最后谈了几点改进意见。     

虚拟逻辑分析仪触发功能

文中提出用FPGA中的双口RAM实现的虚拟逻辑分析仪的触发功能.采用Verilog硬件描述语言设计,用EDA工具进行仿真、综合与实现,在单片FPGA上实现虚拟逻辑分析仪的触发功能.