STRICT DERIVATION OF MEAN FIELD EQUATION FOR ONE-DIMENSIONAL TRAFFIC FLOW MODEL

A new analysis method is presented for the study of Fukui-Ishibashi deterministic one-dimensional traffic flow cellular automaton model of high speed car on highway. By using this method, the exact mean field equation describing the fundamental diagram curve of average traffic speed versus the car density on highway can be derived strictly.     

牙龈卟啉菌表面蛋白的生物活性和免疫原性研究

为了更好地研究牙龈卟啉菌(Prophyromonas gingivalis，Pg)表面蛋白(Surface-associated proteins，SAP)的生物活性，实验用SAP体外刺激小鼠颅骨和人外周血单个核细胞，分别用自动生化分析仪和放免方法检测培养液中Ca2 和IL-6的含量．同时，采用ELISA和旧法分别测定SAP免疫小鼠的抗体效价和诱导的脾细胞转化程度．结果显示：一方面SAP是体外诱导骨吸收和前炎性因子合成的介质；另一方面SAP免疫的小鼠产生了抗SAP特异性抗体和脾细胞特异增生反应．这说明具有生物活性的SAP诱导了实验小鼠产生体液免疫应答和细胞免疫应答．     

Ultra-Narrow Dual-Channel Filter Based on Symmetrical Sampled Fibre Bragg Grating

A kind of ultra-narrow dual-channel filter is proposed in principle and demonstrated experimentally. This filter is designed by means of two sampled fibre Bragg gratings （SFBGs）, where one is periodic O-π sampling and the other is symmetrical spatial sampling. The former can create two stopbands in the transmission spectra and the latter can produce two ultra-narrow passbands. Our filter has the 3-dB bandwidth of about 1 pm, whose value is two orders of magnitude less than the bandwidth of the traditional SFBG filters. The proposed filter has a merit that the channel spacing remains unchanged when tuning the filter.     

一类平均算子Markov链的极限定理

该文给出了一类平均算子Ｍａｒｋｏｖ链,并证明了对此类算子Ｍａｒｋｏｖ链,其大数定理,中心极限定理及重对数定律成立。     

钌多吡啶配合物的合成及结合DNA的研究

合成了咪唑并［ｆ］邻菲咯啉（ＩＰ）和２－苯基咪唑并［ｆ］邻菲咯啉（ＰＩＰ）两种新的配体及［Ｒｕ·（ｂｐ）２（ＩＰ）］￣（２＋）（简称ｂ２ＩＰ）、［Ｒｕ（ｂｐｙ）２（ＰＩＰ）］￣（２＋）（简称ｂ２ＰＩＰ）、［Ｒｕ（ｐｈｅｎ）２（ＩＰ）］￣（２＋）（简称ｐ２ＩＰ）和［Ｒｕ（ｐｈｅｎ）２（ＰＩＰ）］￣（２＋）（简称ｐ２ＰＩＰ）４种新混配物。用电子吸收、稳态发光、圆二色谱研究了配合物与小牛胸腺ＤＮＡ的结合情况。总的结合强度顺序为：ｂ２ＩＰ＜ｂ２ＰＩＰ≤ｐ２ＩＰ＜ｐ２ＰＩＰ，这与配体的平面大小、π电子扩展程度和疏水性顺序（ｂｐｙ＜＜ｐｈｅｎ＜ＩＰ＜ＰＩＰ）是一致的。证明了配合物与ＤＮＡ存在插入结合。ＣＤ谱表明这种结合有对映体选择性．     

废轮胎热解半焦CO2气化反应动力学

利用热重－差热（TG－DTA）分析仪对废轮胎热解半焦进行气化反应的研究,反应气体为CO2,在20－1100度温度范围内以不同的加热速率（10℃/min,30℃/min,50℃/min对各种热解条件下制得的废轮胎半焦进行气化动力学研究,分析了升温速率,制焦条件等对半焦气化反应特性的影响,得到废轮胎热解半焦与CO2气化反应的动力学参数。建立了废轮胎半焦CO2气化反应一级动力学模型,模型与实验结果吻合良好。     

Facile fabrication of highly flexible,porous PEDOT: PSS/SWCNTs films for thermoelectric applications

High-performance organic composite thermoelectric(TE)materials are considered as a promising alternative for harvesting heat energy.Herein,composite films of poly(3,4-ethyienedioxythiophene):poly(styrene sulfonate)/single-walled carbon nanotubes(PEDOT:PSS/SWCNTs)were fabricated by utilizing a convenient solution mixing method.Thereafter,the as-prepared hybrid films were treated using sulfuric acid(H₂SO₄)to further optimize the TE performance.Film morphological studies revealed that the sulfuric acid treated PEDOT:PSS/SWCNTs composite samples all possessed porous structures.Due to the successful fabrication of highly conductive networks,the porous nano-architecture also exhibited much more excellent TE properties when compared with the dense structure of the pristine samples.For the post-treated sample,a high power factor of 156.43μW·m^-1·K^-2can be achieved by adjusting the content of CNTs,which is approximately 3 orders of magnitude higher than that of the corresponding untreated samples(0.23μW·m^-1·K^-2).Besides,the obtained films also showed excellent mechanical flexibility,owing to the porous nanostructure and the strong p–p interactions between the two components.This work indicates that the H₂SO₄ treatment could be a promising strategy for fabricating highly-flexible and porous PEDOT:PSS/SWCNTs films with high TE performances.     

某航天硅基复合材料防静电性能测试研究

高速运动的航空器在其飞行过程中会经历复杂的空间环境,使其静电安全性遭受严峻挑战。针对某型航空隔热瓦硅基复合材料讨论分析了多种防静电性能的评估方法,确定了静电衰减时间作为其防静电性能指标,并采用充电法对静电衰减时间进行了测试研究,获得了该材料在烧蚀前后的静电衰减特性,为评价高速飞行器的静电安全性提供了重要依据。研究结果表明,烧蚀前的硅基复合材料静电衰减时间长,残余电量大;烧蚀后的硅基复合材料静电衰减时间大大减小、残余电量显著降低,防静电性能远好于烧蚀前的硅基复合材料。     

贵州罗甸玉红外光谱特征及意义

选取了罗甸玉中一些典型样品,在进行FT-IR测试的基础上,对罗甸玉中透闪石晶体内部结构基团的振动归属进行了探讨。罗甸玉的IR研究结果证实,罗甸玉矿物组成主要为透闪石,这与其他测试结果吻合。但罗甸玉中透辉石840～860 cm-1频率的吸收带的出现,这是在其他天然软玉的IR研究中未见报道的,也是罗甸玉矿物组成与其他软玉矿物组成的最大区别,为罗甸玉在成玉(即由透闪石岩向软玉转变)过程中残留透辉石所致,是揭示罗甸玉变质成因过程的重要矿物学证据,同时也表明罗甸玉的成玉过程与已发现的其他天然软玉相比存在一定差异,这一差异进一步揭示罗甸玉是一种新成因类型的软玉矿。