碱性蛋白酶对酪蛋白水解的最适宜条件

蛋白质酶解是改善蛋白质特性,便于人体吸收的有效途径。我们对富含于乳制品中的酪蛋白,采用碱性蛋白酶进行水解实验。通过对主要影响因素的分析及回归方法,确定碱性蛋白酶对酪蛋白水解的最佳工艺条件:温度55℃,酶-底物比为7%,底物质量分数为6%,pH值为8。     

工业热电偶、热电阻自动检定装置

将传统的手动热电偶、热电阻检定装置改进为自动检定装置，实现了自动连续检定。     

正则化广义逆ERT 图像重建算法的研究

提出一种正则化广义逆ERT图像重建算法，利用ERT仿真软件得到的数据进行图像重建。与常用的ERT图像重建算法进行比较，重建出的图像经过统一的门限滤波后，反投影算法、灵敏度系数算法和正则化广义逆ERT图像重建算法重建图像的CSIE平均值分别为12％，9％和6％。研究表明，正则化广义逆ERT图像重建算法重建速度快，能显著提高重建图像的质量，适合于工业过程应用。     

Structurally noise resistant classifier for multi-modal person verification

In this letter we propose a piece-wise linear (PL) classifier for use as the decision stage in a two-modal verification system, comprised of a face and a speech expert. The classifier utilizes a fixed decision boundary that has been specifically designed to account for the effects of noisy audio conditions. Experimental results on the VidTIMIT database show that in clean conditions, the proposed classifier is outperformed by a traditional weighted summation decision stage (using both fixed and adaptive weights). Using white Gaussian noise to corrupt the audio data resulted in the PL classifier obtaining better performance than the fixed approach and similar performance to the adaptive approach. Using a more realistic noise type, namely “operations room” noise from the NOISEX-92 corpus, resulted in the PL classifier obtaining better performance than both the fixed and adaptive approaches. The better results in this case stem from the PL classifier not making a direct assumption about the type of noise that causes the mismatch between training and testing conditions (unlike the adaptive approach). Moreover, the PL classifier has the advantage of having a fixed (non-adaptive, thus simpler) structure.     

The AC losses measurement and analysis of superconducting NbTi CICC for HT-TU superconducting Tokamak

Superconducting TF and PF coils have been measured in SULTAN test facility. Segregated copper strands are included in four NbTi CICC and this is a technical innovation. Two AC losses measurement methods, calorimetric and electromagnetic methods, have been used in the experiments, and a broad frequency range (from 0.05 Hz to 6 Hz) is covered in sample test. The purpose of this experiment was to investigate AC losses of TF and PF CICC conductor including segregated copper and to check the design of PF and TF CICC coated with different resistive barriers (Pb-30Sn-2Sb and Ni plating on NbTi strands).     

真空状态下变压器铁心对地绝缘电阻的变化规律

通过测试变压器铁心对地的绝缘电阻及其模型的绝缘电阻，分析了绝缘电阻随真空度变化而变化的机理。总结出了绝线电阻随真空度变化的规律。     

碱性锌锰电池隔膜筒堆砌机的设计

在消化吸收国外引进设备的基础上，设计一种用于碱性锌锰电池隔膜筒自动堆砌的设备。该设备具有结构简单、自动化程度和生产效率高、无污染等特点，生产速度达150只／分，解决了碱性锌锰电池自动化生产线的设备配套问题。     

μΩ级小电阻测量方法研究

对μΩ级小电阻测量的三种方法进行详细的讨论，并对小电阻测量中用到的4个关键技术进行了说明，给出了测量框图。     

交流电压灭磁的现场试验与应用

本文对葛洲坝二江电厂励磁系统灭磁原理及其存在的问题进行了分析，介绍了几种解决问题的方案，并对其进行了比较，详细介绍了交流电压灭磁实现方法和应用情况。     

电阻器设计研究探讨

阐述了电阻器设计的基本原则，提出根据给定的电阻允差，求出电阻的偏差值，再根据偏差值及材料尺寸偏差，得出材料的加工偏差的方法；此外，电阻器的热耗散可根据本文提供的值进行计算，然后对比一些成熟的产品再作修正，通过多次反复，取得经验，就可以设计出合乎要求的电阻器。