Thermal decomposition kinetics and lifetime of the complex of Tb2（BA）6（PHEN）2

The thermal behavior of Tb2(BA)6(PHEN)2 (BA: benzoate, and PHEN: 1,10-phenanthroline) in a static air atmospbere was investigated by TG-DTG, SEM and IR techniques. By the kinetic method of processing thermal analysis data put forward by Malek et al., it is defined that the kinetic model for the first-step thermal decomposition is SB(m, n). The activation energy E for this step reaction is 99.07 kJ/mol, the entropy of activation ΔS^≠ is -84.72 J/mol, the enthalpy of activation ΔH^≠ is 94.26 kJ/mol, the free energy of activation ΔG^≠ is 144.77 kJ/mol and the pre-exponential factor lnA is 20.93.The lifetime equation at mass-loss of 10% was deduced as lnτ = -29.0312 19760.83/T by isothermal thermogravimetric analysis.     

双辊铸轧AZ91D半固态镁合金板带试验研究

在自行设计、安装的双辊连续、水平铸轧机上进行AZ91D镁合金半固态板带铸轧试验研究，分析了镁合金半固态浆料的制备过程，在590℃左右机械搅拌5min，在550-585℃温度区间内进行铸轧。结果表明，半固态连续铸轧技术可以提高板带的塑性加工性能，细化晶粒。在380℃时进行热轧再加工，最大压下率达到46％。     

双组分高固体丙烯酸聚氨酯涂料的研究

介绍了改性高固体分羟基丙烯酸树脂的合成工艺，通过对引发剂、链转移剂、反应温度及叔碳酸缩水时油酯等因素的讨论，合成了新型的羟基丙烯酸树脂。以其为基料配制了丙烯酸聚氨酯涂料，并讨论了该磁漆的配方设计和各项性能。     

混合化工废水混凝脱色实验研究

对混合化工废水分别用聚铝、聚铁等无机混凝剂和有机高分子絮凝剂进行混凝脱色实验，并分析了脱色机理。实验表明,脱色剂性质、脱色剂投药量对处理效果都有很大影响。通过比较,可以根据混合化工废水不同的进水水质情况,选择适当的絮凝脱色剂，使出水色度大大降低,经济而有效。     

规整填料塔精馏的Marangoni效应

选用 6种代表性物系对陶瓷板波纹和不锈钢丝网规整填料进行全回流精馏实验 ,考察Marangoni效应对规整填料液体流动分布及传质的影响 .结果表明 :对纯有机体系 ,Marangoni效应影响较小 ;而对有机物的水溶液 ,Marangoni效应严重影响着填料的润湿和传质效率     

低磷共聚物对黄铜的缓蚀作用

采用失重法、能量散射X-射线、电化学方法，研究了自制低磷共聚物在配制冷却水中对黄铜的缓蚀作用，分析了空白实验和加入低磷共聚物后黄铜试片的表面元素组成，探讨了低磷共聚物的缓蚀机理。结果表明，低磷共聚物在黄铜试片表面活性位置吸附抑制了阳极电化学过程。     

苗家坝-碧口梯级水库汛期水位动态控制研究

本文将单一水库预泄能力约束法,推广到梯级水库汛期水位动态控制中,并建立了梯级水库汛期水位联合运用和动态控制模型,假定预报信息准确,在不降低下游保护对象的防洪标准的前提下,最大限度发挥梯级水库的兴利效益。以苗家坝、碧口水库为对象进行了实时调度模拟,其结果相比于原设计汛限水位动态控制方案,减少了弃水,且保证最大出库流量均在可控范围内,达到在不降低防洪标准的前提下提高梯级水库兴利效益的目的,大大提高了洪水资源利用率。     

Automatic moment segmentation and peak detection analysis of heart sound pattern via short-time modified Hilbert transform

This paper proposes a novel automatic method for the moment segmentation and peak detection analysis of heart sound (HS) pattern, with special attention to the characteristics of the envelopes of HS and considering the properties of the Hilbert transform (HT). The moment segmentation and peak location are accomplished in two steps. First, by applying the Viola integral waveform method in the time domain, the envelope (E_T) of the HS signal is obtained with an emphasis on the first heart sound (S1) and the second heart sound (S2). Then, based on the characteristics of the E_T and the properties of the HT of the convex and concave functions, a novel method, the short-time modified Hilbert transform (STMHT), is proposed to automatically locate the moment segmentation and peak points for the HS by the zero crossing points of the STMHT. A fast algorithm for calculating the STMHT of E_T can be expressed by multiplying the E_T by an equivalent window (W_E). According to the range of heart beats and based on the numerical experiments and the important parameters of the STMHT, a moving window width of N = 1 s is validated for locating the moment segmentation and peak points for HS. The proposed moment segmentation and peak location procedure method is validated by sounds from Michigan HS database and sounds from clinical heart diseases, such as a ventricular septal defect (VSD), an aortic septal defect (ASD), Tetralogy of Fallot (TOF), rheumatic heart disease (RHD), and so on. As a result, for the sounds where S2 can be separated from S1, the average accuracies achieved for the peak of S1 (AP₁), the peak of S2 (AP₂), the moment segmentation points from S1 to S2 (AT₁₂) and the cardiac cycle (ACC) are 98.53%, 98.31% and 98.36% and 97.37%, respectively. For the sounds where S1 cannot be separated from S2, the average accuracies achieved for the peak of S1 and S2 (AP₁₂) and the cardiac cycle ACC are 100% and 96.69%.     

物料在竖直管道中的流动和堵塞原因分析

介绍了竖直管道中气力输送物料过程各种不同参数的关系以及物料在管道中发生堵塞的原因，给出了预测堵塞发生的计算方法，为物料气力输送系统的设计提供了一些借鉴。     

聚合物胶束作为药物载体的应用

作为药物载体聚合物胶束具有其他纳米载体所不具有的优势,如良好的稳定性和靶向性等.本文综述了聚合物胶束的种类、自组装原理、制备方法、载药方法和释药机理.