求解矩阵方程AXB+CXD=F参数迭代法的最优参数分析

本文针对求矩阵方程AXB+CXD=F唯一解的参数迭代法，分析当矩阵A，B，C，D均是Hermite正（负）定矩阵时，迭代矩阵的特征值表达式，给出了最优参数的确定方法，并提出了相应的加速算法.     

Experimental investigation on the effectiveness of sorption energy recovery wheel in ventilation system

The object of this research was to investigate the effectiveness of sorption energy exchanger and the impact of the operational and thermal environmental conditions on their efficiency under steady-state conditions. To achieve this object, a test facility was installed into the Indoor Air Quality and Thermal Comfort Laboratory of BUTE University. A molecular 3Å sieve sorption wheel with high latent effectiveness is integrated into the experimental setup. In this study, the correlation between the sensible, latent, total effectiveness under different ambient air temperature and humidity values and different rotational speeds of the wheel is investigated in detailed by experimental tests.     

A possible human counterpart of the principle of increasing entropy

It is well-known that the principle of increasing entropy holds for isolated natural systems that contain non-adaptive molecules. Here we present, for the first time, an experimental evidence for a possible human counterpart of the principle in an isolated social system that involves adaptive humans. Our work shows that the human counterpart is valid even though interactions among humans in social systems are distinctly different from those among molecules in natural systems. Thus, it becomes possible to understand social systems from this natural principle, at least to some extent.     

1stOpt软件在蔗糖水解实验教学中的应用

将1stOpt软件用于物理化学实验蔗糖水解反应速率常数的测定中，在无需严格记录反应开始时间和测定反应终了旋光度的情况下，通过非线性拟合无需编程及公式变换就可以简单方便准确地得到反应速率常数，避免了传统数据处理方法所带来的人为误差，可以补充和改进物理化学实验的教学。     

应用化学综合创新实验:铜纳米粒子催化硝基化合物还原反应的设计*

以较前沿的科研成果为基础设计了一个针对应用化学专业本科生的综合创新性实验--铜纳米粒子制备及催化硝基化合物还原反应的性能测试。实验内容包括一定粒径大小的铜纳米粒子的制备及表征,铜纳米粒子催化硝基芳烃还原的研究及催化剂的循环使用次数的考察等。本实验不仅可以锻炼学生的基本实验操作技能,同时训练学生对涉及到的仪器测试及结果进行合理分析,有助于提高学生的实验兴趣及动手能力,对培养学生的创新意识和团队协作精神也大有裨益。     

大学化学本科教学中综合化学实验的设计——锂离子电池制作

将CR2032型锂离子电池的制作及电化学性能测试实验设计为大学化学本科生的综合实验并将其应用于本科教学中，建立起基于锂离子电池用正极材料的合成、表征、电极制备及电池组装和性能测试的综合性开放实验。实验以无机材料制备为实验基础，以电化学原理为理论基础，通过文献查阅、确立合成路线、材料制备及表征、锂离子电池制作与测试等多项综合实验内容，使学生了解目前常见的正极材料种类、合成方法、电池的基本结构以及电池性能的测试方法。在教学过程中以学生主动探索为主体，培养学生的科学探究素养，锻炼学生查阅文献、自主设计实验和合作开发的能力。     

手持技术测定钙尔奇D片中的钙含量

利用二氧化碳传感器测定钙尔奇D片中的钙含量，解决二氧化碳含量不好直接测定的问题，帮助学生提升定量认识，同时体验多种数据记录与处理方式，感受信息技术的魅力。     

中美高中化学教科书支撑同一知识的实验设计和内容呈现比较——以“影响化学反应速率的因素”为例

以人教版、苏教版、鲁科版高中化学教科书以及美版教科书中支撑"影响化学反应速率的因素"这一知识内容所涉及的实验内容为研究对象，从实验的设计和内容呈现等方面进行系统地比较，结果表明：国内的教科书中设计的实验探究性更强，对于学生能力的培养更加全面，美国教科书中设计的实验更注重吸引学生的注意力，激发学生的学习兴趣。最后综合分析了不同版本教科书的优缺点，并对实际教学提出一些建议。     

Extreme beam attenuation in double-slit experiments: Quantum and subquantum scenarios

Combining high and low probability densities in intensity hybrids  , we study some of their properties in double-slit setups. In particular, we connect to earlier results on beam attenuation techniques in neutron interferometry and study the effects of very small transmission factors, or very low counting rates, respectively, at one of the two slits. We use a “superclassical” modeling procedure which we have previously shown to produce predictions identical with those of standard quantum theory. Although in accordance with the latter, we show that there are previously unexpected new effects in intensity hybrids for transmission factors below a?10⁻⁴$a?10^{-4}$, which can eventually be observed with the aid of weak measurement techniques. We denote these as quantum sweeper effects, which are characterized by the bunching together of low counting rate particles within very narrow spatial domains. We give an explanation of this phenomenology by the circumstance that in reaching down to ever weaker channel intensities, the nonlinear nature of the probability density currents becomes ever more important, a fact which is generally not considered–although implicitly present–in standard quantum mechanics.     

The Potential of O‐MMT as a Reinforcing Filler for Uncured and Dynamically Cured PVC/XNBR Composites

Organic montmorillonite modified with quaternary ammonium (O‐MMT) was compounded with uncured and dynamically cured poly(vinyl chloride)/carboxylated nitrile butadiene rubber (PVC/XNBR) composites, using a Brabender Plasticorder at 130°C and 50 rpm rotor speed. The reinforcing efficiency of the O‐MMT was investigated in the uncured PVC/XNBR composite and the dynamically cured PVC/XNBR counterpart. Mixing and dynamic curing of the composites were monitored by typical torque‐time curves derived from a Brabender internal mixer. The torque‐time curves revealed that the dynamic curing process was successful and the incorporation of O‐MMT has no adverse effect on the processibility of the composites. It has been found that the introduction of crosslinks within the rubbery phase in the presence of the O‐MMT has further improved the tensile properties. DMA studies revealed that dynamically cured composite with O‐MMT showed higher storage modulus than the composite without O‐MMT. Furthermore, a one‐step tensile modulus vs. temperature curve and a related one peak tensile loss modulus vs. temperature curve were obtained, consequently, both are characteristics of a miscible polymers system. Further evidence on the composite miscibility was purchased by thermal scans from DSC, which showed a single glass transition temperature of PVC/XNBR composites. This claim was further supported by ATR‐IR spectra which revealed that hydrogen bonding is extensively involved in PVC/XNBR composites. This evidence unveiled the exact nature of the specific interactions responsible for miscibility and hence, enhanced mechanical properties. Furthermore, we proved in our studies the reinforcing role played by layered clay due to better dispersion, as well as improved interactions.