有限电导率模块在THz折叠波导行波管模拟中的验证和确认

采用与同类商业软件比对的方法，在THz折叠波导行波管算例中对自编NEPTUNE3D程序的有限电导率模块进行有效验证和确认，包括冷腔损耗与计及损耗的热腔增益。比对结果表明：冷腔损耗计算相对误差在3％～4％左右，计及损耗的热腔最佳增益相对误差及最佳工作电压漂移相对误差均在2％左右。通过不同软件、冷腔损耗与热腔增益的比对，验证了有限电导率模块正确性和可靠性。此外，还对加工因素导致结构参数变化对冷腔损耗特性影响，做了规律性讨论。

石油生产多组分监测光纤电导一体式传感器研究

为了解决石油生产多组分监测问题,基于光纤技术和电导技术成功研制了一种用于石油生产多组分监测光纤电导一体式传感器。利用ZEMA光线追迹方法和FEM方法建立FOCIS仿真模型。对电导测量模块(CMM)电场分布、CMM响应特性、光纤测量模块(OFMM)返回光照强度分布、OFMM响应特性等进行了仿真分析。不同油气水三相流流型条件下CMM和OFMM测量值与标准含率值呈现出良好的线性关系,测量相含率误差均在5%以内。在内径为32 mm垂直管道内进行了FOCIS现场实验测试,实验结果表明:在气流量5、20、40 m^(3)/d,油水总流量10、30、50、70 m^(3)/d,液相含水率50%、60%、70%、80%、90%等工况下,测量含水率与含气率误差在5%以内。仿真与实验均证明FOCIS油气水多组分监测是可行和有效的。

金宝AK200US血液透析机故障维修3例

1故障一故障现象：开机自检约8 min左右,出现错误代码提示,错误代码为FCN 4.43 031,查看电导度显示在19左右,无法稳定。故障分析及处理：此错误代码提示为自检5 min内未达到电导度高限。首先检查透析液,

INSTRUMENT FOR MEASURING GEOMETRIC ERRORS OF GUIDE RAIL OF ELEVATOR

A new instrument for checking the quality of elevator guide rails is introduced.With this instrument,the general geometric errors such as straightness,flatness,squareness,twist,thickness and height can be measured automatically,simultaneously in a short time with high accuracy.It is very useful for elevator guide rail factories to improve their work efficiency and the quality of their products.

Derivations of the Even Part of Finite-Dimensional Simple Modular Lie Superalgebra M

Let F be the underlying base field of characteristic p 〉 3 and denote by M the even part of the finite-dimensional simple modular Lie superalgebra M. In this paper, the generator sets of the Lie algebra M which will be heavily used to consider the derivation algebra Der（M） are given. Furthermore, the derivation algebra of M is determined by reducing derivations and a torus of M, i.e., Der（m）=ad（m） spanF{∏l ad （ξr＋1ξl）} spanF{adxi,ad（xiξ^v）∏ad（ξr＋1ξl）}. As a result, the derivation algebra of the even part of M does not equal the even part of the derivation superalgebra of M.