论知识经济时代图书馆员的继续教育

基于继续教育的概念,阐述了图书馆员进行继续教育的必要性,探讨了图书馆员继续教育的内容,并提出了在实施过程中应注意的问题。     

衡水湖样品中粘细菌的分离与纯化

对衡水湖区域采集的水样、泥样、草样以及岸上沉积物样品预处理后,利用兔粪诱导、滤纸诱导、滤膜过滤等方法进行了粘细菌分离,共纯化得到24株粘细菌.根据营养细胞、粘孢子、子实体和菌落形态等特征可将所分离纯化粘细菌鉴定为珊瑚球菌属(Corallococcus)、囊球菌属(Angiococcus)、原囊菌属(Archangium)和粘球菌属(Myxococcus)4属.首次从淡水环境中分离出粘细菌.     

Electronic Noses Using Quantitative Artificial Neural Network

The present paper covers a new type of electronic nose (e-nose) with a four-sensor array, which has been applied to detecting gases quantitatively in the presence of interference. This e-nose has adapted fundamental aspects of relative error (RE) in changing quantitative analysis into the artificial neural network (ANN). Thus, both the quantitative and the qualitative requirements for ANN in implementing e-nose can be satisfied. In addition, the e-nose uses only 4 sensors in the sensor array, and can be designed for different usages simply by changing one or two sensor(s). Various gases were tested by this kind of e-nose, including alcohol vapor, CO, iiquefied-petrol-gas and CO2. Satisfactory quantitative results were obtained and no qualitative mistake in prediction was observed for the samples being mixed with interference gases.     

蛋白质在疏水色谱中的变性热力学

研究21-80℃温度范围内一些蛋白质和小分子在疏水相互作用色谱中的热行为。利用Van't Hoff作图(lnk'-1/T)测定蛋白质分子的热力学参数(ΔH°, ΔS°和ΔG°), 根据标准熵变(ΔS°)和标准自由能变(ΔG°)判断蛋白质在色谱过程中的构象变化, 通过ΔH°-ΔS°的线性关系估计蛋白质变性时的"补偿温度"(β), 鉴定蛋白质在疏水相互作用色谱中保留机理的同一性。     

基于黏菌优化极限学习机的煤矸石多光谱识别

煤和矸石的精准辨识是煤矸分选和煤炭清洁高效利用的重要前提,针对传统方法存在效率低、需加装辐射隔离以及受环境干扰等诸多不足,提出了基于多光谱图像特性和光谱特性来识别煤和矸石,构建黏菌优化极限学习机(Slime Mold Algorithm Extreme Learning Machine,SMA-ELM)的分类模型。 搭建多光谱数据采集系统完成煤与矸石的光谱图像采集,通过 LBP 对光谱图像进行特征提取并使用 PCA 主成分分析对提取后的特征向量降维,输入SMA-ELM 分类模型、蚁狮优化极限学习机(Antlion Algorithm Optimized Extreme Learning Machine,ALO-ELM)分类模型、鲸鱼优化极限学习机(Whale Algorithm Optimized Extreme Learning Machine,WOA-ELM)分类模型进行对比,重点研究不同波长响应下煤和矸石的辨识精度来筛选最佳波长,通过多评价指标对优化后的最优波段进行比较。实验结果表明, SMA -ELM 分类效果最佳,第 6 波段为最优波段, SMA - ELM 在该波段的平均识别准确率为95. 08%,煤和矸石的识别 F1-Score 分别为 96. 47%和 92. 68%,用时 10. 6 s。 所提出的方法可以实现煤和矸石的精准识别,这对煤和矸石的智能分选具有重要的研究意义。     

LiCl-NaCl-KCl-H2O溶液体系渗透压的分子动力学模拟

盐湖卤水中含有大量的锂、 钾资源, 发展卤水的渗透压预测模型和方法, 对于资源的综合利用具有重要的指导意义. 本文采用分子动力学(MD)方法结合水溶液渗透压模拟(OPAS)技术, 研究了LiCl-NaCl-KCl-H₂O体系的渗透压模拟方法, 计算了298.15 K下体系多种组成和浓度的渗透压, 并将计算结果与实验值和Pitzer模型计算值进行了对比. 结果显示, 模拟计算值与实验值和Pitzer模型计算值渗透压的趋势基本一致, 包括同种溶液不同浓度和同浓度不同溶液之间的渗透压关系. 该方法可以应用于多元混合物体系对渗透压进行定性和半定量的计算.     

浅析师范院校《化工基础》课的教学改革

本文基于师范院校《化工基础》课的特点,讨论了教学改革过程中要注意的问题,并强调了实验和见习环节在教学改革中的重要性。     

Study of BESⅢ MUC offline software with cosmic-ray data

Cosmic-ray data of 90 M events have been collected and used for calibration, alignment as well as detector tuning. A special tracking algorithm for the BESⅢ muon counter is developed and verified with Monte-Carlo simulation and then further confirmed with the cosmic-ray data. The obtained strip resolutions are in good agreement with the design values. A new alignment approach for the BESⅢ muon counter is confirmed with the cosmic-ray data and proposed to be used in future analysis of experimental data.     

Application of Nanogold Probe Coupled with Silver Enhancement in Rapid cTnI Colorimetric Immunoassay

Cardiac troponin I (cTnI) in the serum of patients has been established as a principal biochemical marker of myocardial damage1-4. Fast detection of cTnI will be helpful for the diagnosis of acute myocardial infarction (AMI), the identification of myocardial injury (MI) and the stratification of cardiac risk. A number of serological tests have been developed for the detection of cTnI. As known, among many methods, enzyme-linked immunosorbent assay (ELISA) and radioimmunoassay (RIA) wer…     

等点时Cu（Ⅱ）与HSA与BSA结合的研究

用平衡透析法研究了等电点时Ｃｕ（Ⅱ）与人血清白蛋白（ＨＳＡ）或牛血清白蛋白的相互作用，Ｓｃａｔｃｈａｒｄ图分析表明，ＨＳＡ和ＢＳＡ对Ｃｕ（Ⅱ）各有１个强结合部位，它可能位于白蛋白分子的Ｎ－端三肽段上，为全面反映Ｃｕ（Ⅱ）与ＨＳＡ或ＢＳＡ的结合情况，用非线性最小二乘法拟合Ｂｊｅｒｒｕｍ方程，首次报道了等电点时Ｃｕ（Ⅱ）－ＨＳＡ和Ｃｕ（Ⅱ）－ＢＳＡ体系的逐级稳定常数值，其Ｋ１的数量级为１０＾４．Ｈｉｌ