微波消解法快速测定废水中的总磷

采用微波对废水中的总磷进行消解,考察了消解时间、功率等不同实验条件对标样微波消解的影响,得出本实验消解的最佳条件,即过硫酸钾溶液用量为 0.5 mL,压力为10 MPa,消解时间为 2 min：并将该法与总磷测定的常规方法进行了比较,结果表明,过硫酸钾-微波消解法操作简单,效率高,对工作环境污染小.最后对微波消解法的精密度和准确度进行验证,实验结果表明其具有良好的精密度和准确度.     

CWP／SU地震数据处理软件研究与应用

CWP／SU是美国科罗拉多矿业学院波场处理中心开发的一款免费的地球物理开源软件。其主要研究地震建模和成像,地震反演理论,以及复杂地质体地震数据处理算法,既可以作为地震数据处理环境,也可以作为波场处理的相关软件的研究与开发环境。其广泛应用于地震勘探开发领域,是一个很好的学习工具。本文主要是以SU地震处理软件为平台,进行了三个方面的研究与应用：基于SU的地震正演模拟;LIFT去噪方法在SU中的实现;基于SU的地震延时校正程序编写。     

Intelligent auxiliary function method for multimodal global optimization problems

When solving multimodal global optimization problems, many auxiliary function methods are sensitive to their parameters and of great difficulty in dealing with high dimensional problems. Aiming to overcome these two disadvantages, a new intelligent auxiliary function method is proposed in this paper. Firstly, the smoothing function is employed to eliminate the solutions worse than the best one found so far. Based on the smoothing function, a novel auxiliary function is constructed, in which there is only one easily-adjusted parameter. This auxiliary function can avoid the unwilling “Mexican hat” effect caused by improper parameter settings. Then, properties of the auxiliary function are analyzed. In order to improve the searching ability, the proposed auxiliary function and intelligent optimization techniques are assembled in the designed method, which can help the method deal with high dimensional problems. Finally, 13 different benchmarks are used to test the influence of the parameter and the performance of the searching method. Experimental results indicate the effectiveness of the proposed method.     

贵州息烽磷矿矿山接替方案的比较及实施效果

贵州息烽磷矿矿山接替方案有二：方案一为地下开采方案，该方案总投资1890万元，矿石直接生产成本38．51元／t；方案二为第二次露天延深开采方案，该方案总投资2370万元，矿石直接生产成本39.72元／t。通过分析比较，由于方案二回采率高，贫化率低，能开采山高品位原矿，对企业、国家及需矿厂家创造可观的经济效益。因此，选择了投资大，成本较高的方案二即第二次露天延深开采方案。经过对该方案两年的实施效果证明，该 技术上是可行的，经济上是合理的。     

Formation of amorphous and nanocrystalline phases in high velocity oxy-fuel thermally sprayed a Fe–Cr–Si–B–Mn alloy

High velocity oxy-fuel (HVOF) thermal spray was used to deposit a Fe–Cr–Si–B alloy coating onto stainless steel (1Cr18Ni9Ti) substrate. Microstructures of the powder and the coating were investigated by X-ray diffraction (XRD), scanning election microscopy (SEM), transmission election microscopy (TEM) and differential scanning calorimeter (DSC). The coating had layered morphologies due to the deposition and solidification of successive molten or half-molten splats. The microstructures of the coating consisted of a Fe–Cr-rich matrix and several kinds of borides. The Fe–Cr-rich matrix contained both amorphous phase and nanocrystalline grains with a size of 10–50 nm. The crystallization temperature of the amorphous phase was about 605 °C. The formation of the amorphous phase was attributed to the high cooling rates of molten droplets and the proper powder compositions by effective addition of Cr, Mn, Si and B. The nanocrystalline grains could result from crystallization in amorphous region or interface of the amorphous phase and borides by homogeneous and heterogeneous nucleation.     

动画片制作样式的探索

一、动画的表现力 动画片作为艺术的一种载体，同其他艺术形式一样担负着传达人类情感与思想的媒介作用。不仅如此，由于动画片自身所特有的表现方法，使它的表现力往往会超越其他的艺术载体，要比文字、绘画、音乐更有表现力。     

汽轮机分布式远程监控系统设计与实现

本文介绍了基于汽轮机分布式远程监控系统设计技术,对系统的关键组成部分进行了较为详细的讨论。通过现场与远程端的计算机及其数据采集模块,可实现对现场汽轮机统一安全监控。系统组网灵活、可靠、易于维护,便于推广。从而能够提高汽轮机系统的安全性能和工作效率。     

镁镍系储氢合金箔的制备研究

根据机械合金化和界面固相扩散反应的基本原理,合成出了一系列不同原子配比的Mg-Ni系储氢合金箔(Mg,Ni原子配比分别是81,41,21及11).研究了Mg-Ni系储氢合金箔的组成及其储氢性能.结果表明,Mg8Ni合金箔的吸放氢温度最低可降至300 ℃,Mg4Ni和Mg2Ni合金箔在250 ℃就可部分氢化,且放氢量均可达到2.5%(质量分数)以上;MgNi合金箔吸氢量较低,但放氢温度有所降低.     

TMS320C28x模数转换器的精度校正

TMS320C28x系列DSP内部集成ADC转换模块,为提高ADC转换精度,对TMS320F2812的ADC模块转换误差及其影响进行分析测试,提出一种用于提高ADC模块精度的校正算法。实际应用证明使用该方法补偿效果良好,有效改善ADC的转换精度,并具有普遍性。