脱毒对热解液中内醚糖及紫色光合菌利用热解液的影响

研究了不同脱毒材料和处理方式对热解液中内醚糖及紫色光合菌利用热解液的影响.实验结果表明,脱毒处理能显著改善紫色光合菌对热解液的利用效率,不同的脱毒材料对热解液中的内醚糖吸附程度有较大的差异.以氢氧化钙和活性炭联用处理后,紫色光合菌对热解液的利用效果最好,对内醚糖的利用率在培养的第4 d即达到77.7%,培养6 d对热解液的利用率达到94.1%,远高于未脱毒处理时的利用效率（61.9%,14 d）.几种脱毒处理方式中,以氢氧化钙处理时对内醚糖的吸附最少（15.1%）,而以717阴离子交换树脂处理时对内醚糖的吸附量最高（68.8%）.     

永磁直驱型风电机组两类故障的穿越技术

为了提高永磁直驱型风电机组的并网性能,分析永磁直驱型风电机组的基本结构,讨论应用于永磁直驱型风电机组的各种低电压穿越技术,变桨距控制,增加功率开关器件的额定容量,网侧加装辅助变流器,STATCOM运行模式控制,不同位置加装撬棒Crowbar耗能元件,加装超级电容器,储能电池或超级电容器与储能电池组合,连接点出现事故性不对称故障时,改进网侧变流器的控制策略,配合撬棒Crowbar保护电路控制机组的功率平衡,实现不对称故障穿越。文中分析的各种故障穿越技术为后续永磁直驱型风电机组并网能力的提高有一定的理论指导。     

一个改进的混凝土氯离子扩散计算模型

通过对影响混凝土中氯离子扩散的因素分析,根据Fick第二定律导出的简化模型,建立综合考虑水灰比、混凝土掺合料、龄期、温度、湿度、混凝土与氯离子结合能力及冻融损伤影响的扩散模型,通过与现有解析模型和有限差分法模型的计算结果的对比,验证模型的正确性和有效性。与现有解析模型相比,该模型考虑的因素更广泛,综合考虑温度、湿度的季节变化及冻融损伤的时随效应对氯离子扩散的影响;与数值模型相比,该模型计算效率高,便于工程应用。     

基于决策树的个人住房贷款信用风险评估模型

在决策树理论的指导下，通过信息增益的应用和公式的构造获取属性重要程度评价值，结合决策树挖掘得到个人住房贷款风险评估模型。经过对该模型进行测试和评价，得出它们预测准确率较高的结论，实现了能够从真正意义上帮助银行信贷人员进行信贷分析并为信贷决策提供支持的模型。同时，该方法对其它评价模型的构造也有一定借鉴意义。     

论经济犯罪中的内幕交易罪

证券内幕交易是证券市场中经常发生的、危害极大的一种经济犯罪行为。本文主要论述了内幕交易的犯罪构成，从内幕信息、内幕信息知情人员的范围、内幕交易的主观方面、客观方面等环节重新梳理内幕交易罪。     

水中 ClO_2、Cl_2、ClO_2~- 及ClO_3~- 的连续碘量法测定

通过大量的试验确定了碘量法连续测定水中ＣｌＯ２、Ｃｌ２、ＣｌＯ－２和ＣｌＯ３－的适宜条件。该方法的准确度、精密度和灵敏度都较好。其方法的回收率：ＣｌＯ２为９６７８％；Ｃｌ２为９８１７％；ＣｌＯ－２为９７２８％；ＣｌＯ３－为１０３３１％。变异系数：ＣｌＯ２为１５２％；Ｃｌ２为２３７％；ＣｌＯ２－为２４３％；ＣｌＯ３－为３５６％。最低检出限：ＣｌＯ２为００５０ｍｇ／Ｌ；Ｃｌ２为００５０ｍｇ／Ｌ；ＣｌＯ２－为００５０ｍｇ／Ｌ；ＣｌＯ３－为０５００ｍｇ／Ｌ。     

一种新的多线程实现技术

本文提出了一种实现多线程机制的简单有效的新方案，它利用多机系统中原有的Ｃａｃｈｅ实现多线程功能，在很低的代价下实现了多机系统的多线程化，使应用程序的执行效率得到大幅度提高。     

基于粗糙集的高维空间离群点发现算法研究

该文提出在高维空间下离群点发现技术的新方法,即利用粗糙集的属性约简技术减少高维空间的维数,并在各个关联规则子空间下对数据集进行基于密度的离群点挖掘,使高维空间下的离群点挖掘更具有实用性。数据分析表明,该算法能有效地发现高维空间数据集中的离群点。     

Block spatial scheduling modelling and application in shipbuilding

With the wide application of module-shipbuilding technology, problems related to block spatial scheduling occur in various working areas, and this restricts the productivity of shipbuilding. To address the problems and to obtain the optimum block sequence and spatial layout, typical block features and work plates were investigated. A heuristic spatial scheduling model was established based on the investigation and proposed strategies with the objective to minimise makespan. With the heuristic algorithm, a block spatial scheduling system was developed and implemented with real data from a large ship. Through the spatial scheduling system, visual results of daily block layouts and progress charts for all blocks can be easily obtained and work orders can also be created for site workers. Several other spatial scheduling methods are described and compared with the above-mentioned heuristic algorithm. The result shows that the heuristic algorithm is better than Cplex and a genetic algorithm in solving large-scale block scheduling, and the heuristic algorithm is better than a grid algorithm and manual scheduling in all aspects such as makespan, utilisation of work plates, runtime of scheduling and on-time delivery. The developed block spatial scheduling system is applied in a block production shop of a modern shipyard and shows good performance.     

Novel porous carbon felt cathode modified by cyclic voltammetric electrodeposited polypyrrole and anthraquinone 2-sulfonate for an efficient electro-Fenton process

A novelty two-step synthesized porous carbon felt (PCF) cathode modified by cyclic voltammetric (CV) electrodeposited polypyrrole (Ppy) and anthraquinone 2-sulfonate (AQS) (PCF/Ppy/AQS) for an efficient electro-Fenton process has been investigated. Brunauer Emmett Teller (BET) and scanning electron microscope (SEM) measurements verified the three-dimensional porous structure of the PCF, revealing that the specific surface area was approximately 2.5 times higher than that of the bare carbon felt (CF), which ensured more active sites available for oxygen reduction reaction (ORR). In addition, the electrodeposited Ppy decreases the charge transfer resistance (R_ct) of the PCF cathode. AQS, a type of anthraquinone that can serve as an oxygen reduction catalyzer, could accelerate the ORR process and subsequently improve the performance of the electro-Fenton system. Rotating disk electrode (RDE) analysis confirmed that the ORR catalyzed by AQS was a double-electron reduction process, which contributed to hydrogen peroxide (H₂O₂) generation. The removal efficiency of total organic carbon (TOC) from Rhodamine B (RhB) could reach 51% within 1 h in the electro-Fenton system equipped with the PCF/Ppy/AQS, resulting in an improvement of approximately 24% compared with the bare CF cathode without porous treatment. The cycle experiment showed a good stability of the PCF/Ppy/AQS cathode. Additionally, the possible mechanism of degradation process in the electro-Fenton equipped with the PCF/Ppy/AQS cathode was proposed based on the electron paramagnetic resonance (EPR) analysis and quenching experiment. The novel fabricated PCF/Ppy/AQS provides an alternative as a high-efficiency cathode, yielding energy savings in the electro-Fenton system.