H2O2与UV／TiO2协同体系光催化降解酸性品红的研究

采用高压汞灯为光源，考察了H2O2与UV／TiO2协同体系对酸性品红的降解效果。结果表明：H2O2提高了UV／TiO2光催化降解酸性品红的速率。同时，研究了影响纳米TiO2光催化降解酸性品红的主要影响因素。实验结果表明：初始PH值等于7时，光催化效率最佳；随着初始浓度的增加光催化降解效率降低；TiO2的最佳用量为0．2g/L。     

1-(2-苯并噻唑)-3-(4-硝基苯基)-三氮烯的合成及分析性能研究

报道了1-（2-苯并噻唑）－3-（4-硝基苯基）-三氮烯（BTNPT）的合成及性质．在TrionX－100存在下，B－R的缓冲碱性介质中，试剂与镉、汞、镍等离子具有高灵敏显色反应，表观摩尔吸光系数分别为2．20×105L·mol－1·cm－1、1．47×105L·mol－1·cm－1、1．00×105L．mol－1·cm－1．     

制作家畜骨架标本脱脂漂白法的改良

通过试验,对制作家畜骨架标本的脱脂漂白法进行了改良。以煮沸的2％—3％Na_2CO_3脱脂和日光曝晒增白,替代了使用有机溶剂脱脂和化学增白剂漂白,其方法简易、经济、安全、实用。经对28具家畜骨架标本和数千枚散骨标本的制作和使用,其制成的骨架标本形态美观、正确、色白、耐用。     

石板坡大桥钢箱梁车载作用下局部应力分析

石板坡大桥主跨由钢箱梁与预应力混凝土箱梁组成。针对该桥钢箱梁桥面板局部受力复杂的情况，运用ANSYS软件建立了钢箱梁结构分析的空间有限元模型，分析了钢箱梁在车载作用下局部应力的分布特点。     

Bayesian mixture modeling for spatial Poisson process intensities,with applications to extreme value analysis

We propose a method for the analysis of a spatial point pattern, which is assumed to arise as a set of observations from a spatial nonhomogeneous Poisson process. The spatial point pattern is observed in a bounded region, which, for most applications, is taken to be a rectangle in the space where the process is defined. The method is based on modeling a density function, defined on this bounded region, that is directly related with the intensity function of the Poisson process. We develop a flexible nonparametric mixture model for this density using a bivariate Beta distribution for the mixture kernel and a Dirichlet process prior for the mixing distribution. Using posterior simulation methods, we obtain full inference for the intensity function and any other functional of the process that might be of interest. We discuss applications to problems where inference for clustering in the spatial point pattern is of interest. Moreover, we consider applications of the methodology to extreme value analysis problems. We illustrate the modeling approach with three previously published data sets. Two of the data sets are from forestry and consist of locations of trees. The third data set consists of extremes from the Dow Jones index over a period of 1303 days.     

On characterizations of the logistic distribution

We modify and extend George and Mudholkar's [1981. A characterization of the logistic distribution by a sample median. Ann. Inst. Statist. Math. 33, 125–129] characterization result about the logistic distribution, which is in terms of the sample median and Laplace distribution. Moreover, we give some new characterization results in terms of the smallest order statistics and the exponential distribution.     

Some preservation results of NBUC aging property with applications

This paper develops a new characterization of NBUC aging property, and investigates its preservation properties both under monotonic anti-star-shaped transformations and under the non-homogeneous Poisson shock models.     

当前淘宝网C2C交易市场的运营措施分析

我国的C2C电子商务交易市场已进入寡头垄断时期,呈现出"三强纷争、淘宝独大"的局面.淘宝网作为当前我国C2C交易市场的龙头老大,其市场运营措施的实施将引领和决定这个市场的未来发展方向,对此加以分析意义深刻.     

磁载TiO_2光催化剂的进展

磁载光催化剂是一类具有磁响应特性的光催化剂,它不仅具有比较高的催化活性,在外加磁场作用下,容易分离回收。本文综述了近年来磁载光催化剂研究进展状况,同时提出了磁载光催化剂研究目前的热点和发展趋势。     

校企合作教改工学结合育人——“2 1”教学模式改革与实践

广东白云学院艺术系深入贯彻落实学院关于校企合作,工学结合育人教改精神,在"2 1"教学模式改革与实践中,全员参与,注重过程管理,以做好"1"、做精"1"为本系工作重点,使艺术系在"2 1"教学模式改革中取得了初步的成效。