弥散强化铜高温塑性变形的研究

弥散铜电极是近２０年来研制出的一种新型电极。本文通过对弥散的压缩热模拟实验，研究其热变形规律以及高温显微组织。并且通过其真实σ－ε曲线，拟合出散铜的高温本构方程模型。     

孤岛面开采强矿震异常区的被动声波探测技术及应用

针对鲍店煤矿103上05孤岛面综放开采面临的高应力集中与强矿震威胁,论文在分析声波波速与加载载荷的关系基础上,建立了基于矿震被动声波探测的孤岛面开采矿震异常区评价方法,提出了采用P波波速异常与波速梯度异常2个指标进行采动应力集中程度的评价,并给出了判别标准,最后开展了现场实践。研究表明:P波波速与应力场具有正相关特性,103上05孤岛工作面临近小采空区侧常出现高波速与高波速梯度异常区,与后续开采阶段的强矿震异常区基本重合。实践证明该方法能够对孤岛面开采强矿震危险性与危险区域做出有效动态评价,强矿震活动的预警准确率较高。矿震被动声波探测技术提升了煤矿强矿震、冲击矿压等煤岩动力灾害的微震识别水平。     

基于X3D的水轮发电机组虚拟安装研究与开发

由于水轮发电机组的结构比较复杂,有关专业的学生或水电站技术人员在了解水轮发电机组的结构与安装过程时,往往面临一定的困难。针对这一实际问题,在应用Pro/E对水轮发电机组三维建模的基础上,对应用Xj3D工具包、Java、Java3D实现虚拟场景的动态交互技术进行了研究,将三维模型转换为虚拟场景,进而实现了水轮发电机组的虚拟安装。实际应用表明,所开发的系统在教学和技术人员培训方面有较高的应用价值。     

Reaction Mechanisms in Platinum-Mediated Electrodynamic Therapy

Electrodynamic therapy (EDT) has emerged as an alternative stimuli-responsive approach for tumor treatment. The current understanding of its mechanism is that an electric field activates water dissociation on platinum nanoparticles (PtNPs) to produce toxic hydroxyl radicals. Nevertheless, the argument here remains that, if without direct contact with electrodes, the equipotential surfaces of PtNPs may hardly trigger electrocatalytic reactions and thus the induction of any radicals. Clearly, the limited understanding of EDT has considerably hindered its current and further explorations. Herein, the fundamental mechanism of EDT is revealed from the view of heterogeneous catalysis. First and foremost, the free chlorine generated during electrolysis is identified as the crucial reactant, which is not observed previously. Through experimental examinations and density functional theory (DFT) calculations, the fundamental reaction is confirmed to be the catalytic activation of HOCl by PtNPs, resulting in the production of oxygen anion radicals and the corrosion of PtNPs. Moreover, the cytotoxicity and intracellular abnormalities further verify the findings and provide new insight into its in vitro anti-cancer mechanism. This study not only assists in re-recognizing the nature of EDT, but also provides core knowledge in guiding its future investigations in catalytic medicine and medical technologies.     

Low Temperature Specific Heat of Amorphous Alloys

A low temperature specific heat model for amorphous alloys was proposed by comprehensive applications of Debye model, two-lever scattering model, and energy band theory. In this model, the low temperature specific heat was considered to be composed of the parts contributed from the lattice as well as that from electrons, and the former part is resulted from the atoms periodically arranged besides those disorderly distributed, and a specific heat formula, which is suitable for amorphous alloys at low temperature, C _p =α T ³+β T, was derived by theoretical analysis. Results show that there is a perfect linear relationship between C _p /T and T ², and many experiment results can be explained satisfactorily by using this model.     

人工神经网络的虚拟输入方法及其在水轮机建模中的应用

本文绘出一种人工神经网络的虚拟输入方法，可以在应用人工神经网络理论建立系统的数学模型时，提高模型的精度。将这种方法用于建立水轮机数学模型，取得了满意的结果。     

统计分析水轮机工作参数的新方法

提出一种包络回归的方法,并用于水轮机工作参数的统计与分析。     

基于监测数据的水力发电系统人工神经网络建模

将引水管路、水轮机、发电机作为一个整体的水力发电系统,并在现场监测数据的基础上,应用人工神经网络方法,建立了该系统的输入输出数学模型.与实际的监测数据进行对比分析表明,所建立的人工神经网络模型具有较高的计算精度,能够用于开发水电站中水轮发电机组的优化运行系统.     

贯流式水轮机比转速的统计分析

综合分析国内已投入运行的贯流式水轮机资料,研究了水轮机比转速与转轮叶片数和工作水头之间的关系,并通过回归分析的方法,综合考虑水轮机转轮叶片数和工作水头对比转速的影响,得到了相应的比转速统计公式。     

GH4169合金高温氧化特征

GH4169合金在850℃、950℃和1040℃条件下氧化符合抛物线动力学规律. 氧化物层为Ti0.95Nb0.95O4+Cr2O3+(Cr.Fe)2O3的复杂结构，高温下氧化元素扩散导致氧化层为岛状结构，在一定氧化时间,氧化层深度与温度是对数函数关系,氧化反应激活能为143.52kJ/mol. 温度高于1040℃氧化物剥落.