基于累积前景理论与PGSA的应急响应群决策模型

针对区间概率条件下的突发事件应急响应群决策问题,考虑决策者的心理行为特征,提出了基于累积前景理论和模拟植物生长算法的决策模型.首先,根据人员伤亡和财产损失的损益值计算突发事件情景的综合价值,其次,基于累积前景理论计算各应急方案的累积前景值.然后,构建了以各决策者信息与群体集结信息之间距离最小为目标的非线性规划模型,采用模拟植物生长算法获得群体最优集结信息.最后,通过案例验证模型的有效性和可行性.     

测定人体尿液中苄基丙二酸的免疫分析新方法研究

将苄基丙二酸(BA)与牛血清白蛋白通过活化酯法偶联制备人工免疫原,然后免疫新西兰大白兔制得抗苄基丙二酸多克隆抗体;使用该抗体建立了测定人体尿液中的苄基丙二酸的间接竞争酶联免疫吸附方法(ic-ELISA),方法线性范围为1.0×10-2～1.0×103ng/mL,最低检测浓度为0.01 ng/mL,板内差异为5.5%,板间差异在3.8%～7.8%的范围内;用于实际尿样中苄基丙二酸的测定,回收率为87.8%～115.1%。     

海洛因毒品水解机理的探讨

利用海洛因在氯仿和乙醚中溶解性的差异,在pH 4.4~11.9范围内,对收缴海洛因毒品分别采用氯仿和乙醚进行提取和检测,以研究海洛因毒品可能存在的变化规律。实验表明,当pH值小于9.22时,水溶液中海洛因变化是以酸碱中和反应为主,水解反应为辅;当pH值大于9.22时,海洛因完全转化为海洛因碱,随着pH值的增加,海洛因碱进入快速水解状态,分解产物为单乙酰吗啡和吗啡。该研究可为海洛因收缴毒品的提取、检测以及制备海洛因碱等方面提供参考。     

Growth Feature of Cubic Boron Nitride on c-BN Crystal Substrates

Cubic boron nitride （c-BN） films were deposited on highly-oriented （111） bulk c-BN crystal by using the rf magnetron sputtering method. The growth films are characterized by micro-Raman spectroscopy （μ-RS） and scanning electron microscopy （SEM）, The results show that the high crystallization electron transparent c-BN films in thickness of about 10μm are obtained, Island and step growth models are clearly shown.     

分子印迹固相萃取-超高效液相色谱法测定河水中的碱性橙Ⅱ

以碱性橙Ⅱ为模板分子,α-甲基丙烯酸为功能单体,乙二醇二甲基丙烯酸酯为交联剂,采用沉淀聚合法合成分子印迹聚合物(BO-MIPs)和不添加模板的非印迹聚合物(MNIPs)。上述聚合物通过扫描电镜、傅里叶红外光谱、X射线衍射法进行结构表征及等温吸附和动力学吸附试验,结果表明:与MNIPs相比,BO-MIPs对模板分子具有明显的特异性吸附作用。在此基础上,利用分子印迹固相萃取结合超高效液相色谱法对等浓度混合的6种结构相似的偶氮色素溶液进行分子识别性研究,发现BO-MIPs对碱性橙Ⅱ具有专一识别性。碱性橙Ⅱ线性范围为4~48μmol·L-1,检出限(3S/N)为0.20μmol·L-1。BO-MIPs对碱性橙Ⅱ的选择吸收率和回收率分别在94.5%~100%和93.0%~99.4%之间,测定值的相对标准偏差(n=5)在3.2%~5.4%之间。     

Effect of Flow-rate Induced Cation Mixing and Particle Size Tuning on the Structure and Electrochemical Properties of LiNi0.8Co0.1Mn0.1O2 Synthesized by Spray Drying

Lithium ion battery cathode material LiNi0.8Co0.1Mn0.1O2(NCM811)was synthe-sized via a spray drying method.The effect of different spray drying flow-rates(200,250,300,and 400 mL·min^-1)on the structural and electrochemical properties of NCM811 are investigated.We find that the contents of Ni,Co,and Mn in the NCM811 cathode materials do not change significantly with the changing flow-rate,but the lattice parameter and morphology of the materials are significantly affected.Under the optimal spray drying flow-rate(250 mL·min^-1),the obtained NCM811 cathode(250NCM811)exhibits the best crystallinity,with the highest ratio of I(003)/I(104)in the XRD pattern.SEM images reveal the spherical morphology of 250NCM811 and the average diameter of about 5 mm.The results of electrochemical test show that the reversible capacity of 250NCM811 reaches 210 mA·g^-1 at 0.2 C(1 C=280 mA·g^-1).After 100 charge-discharge cycles at 1 C,the battery retains more than 94%of its initial capacity.Overall,spray drying flow-rate demonstrates great effect on the electrochemical properties of NCM811.     

双丙酮丙烯酰胺为阳离子的新型离子液体及其在酯化反应中的应用

本文通过酸碱在室温下的中和反应合成了以双丙酮丙烯酰胺为阳离子，乙酸根、三氟乙酸根、四氟硼酸根、六氟磷酸根、硫酸根与氯离子为阴离子的六种盐，用IR, ¹H NMR 和元素分析对其进行了表征。研究结果表明，这六种新的化合物具有离子液体的特征，并且其中四种盐是C1-C6及辛醇与乙酸进行酯化反应的高效催化剂。     

暗孤子耗散阻尼的周期补偿

用计算模拟方法研究了暗孤子在用光纤放大器周期补偿损耗的光纤中的传播。暗孤子对在这种系统中传播时，其亮背景会产生自激的噪声。与光纤放大器配合使用法布里－珀罗滤波器，可以消除这种噪声，有利于暗孤子的长距离稳定传播。     

STUDY ON in vitro SPERM CAPACITATION AND EGG-PENETRATION OF GIANT PANDA

A preliminary report on in vitro sperm capacitation and egg-penetration of giant panda is briefly presented. The panda spermatozoon consists of head, neck and tail, just like the spermatozoa of other animals. Before capacitation sperm heads clusterd together and dispersed after capacitation. They were then able to swim straight forwared. During the time of in vitro capacitation the plasm membrane of the sperm head was first expanded tov arious degrees, then disintegrated, and finally became detached. The electro-dense material in the acrosome appeared in small clumps with high density. Extensive vesiculation occurred between the bi-layered acrosome membranes and thus led to disintegration. Vesiculation in panda sperm differs from that reported in hamsters. When the capacitated panda spermatozoa came into contact with the hamster eggs, the region between the acrosome collar and postacrosome cap first fused with the egg membrane followed by the penetration of the nucleus into the cortex of the egg. Some o     

近红外拉曼光谱快速检测地榆

采用先进的共焦显微拉曼光谱仪,测试了地榆的拉曼光谱,绘出地榆拉曼一阶导数谱。地榆拉曼光谱中,在155、195、902、1466、1476cm-1等处出现明显的特征峰。地榆拉曼谱的一阶导数谱,在152,192,900,157,197,905cm-1等处出现明显特征峰。分析地榆拉曼光谱,确认主要归属与已有的地榆化学成分研究结果相符。地榆拉曼光谱及其一阶导数谱可作为地榆快速准确检测的依据。