磁性多级结构镍铝氧化物的制备及其对染料吸附性能的研究

采用离子液体辅助尿素法合成了多级结构的NiAl-LDH(水滑石), 通过焙烧处理得到花状结构的复合金属氧化物(MMO). 对所合成样品进行罗丹明B吸附实验, 结果表明焙烧产物MMO 由于自身丰富的孔结构对废水溶液中的染料吸附具有较强的吸附效果; 更重要的是通过800℃焙烧处理得到MMO 样品具有较强磁性, 这种磁性吸附剂不仅可以实现对废水中染料的高效吸附, 同时由于自身磁性, 在外加磁场的作用下易于实现吸附剂的可循环利用.      

重金属铅对实验红鲫生理生化指标影响的研究

为了检测重金属铅离子对实验红鲫的生物毒性效应,以实验红鲫为受试鱼类,观察实验红鲫在不同浓度重金属铅溶液中的生长情况、死亡率、异常状态以及血红细胞微核和核异常情况,并检测血液中乳酸脱氢酶(lactate dehydrogenase,LDH)的变化情况指标,分析不同浓度的铅对实验红鲫生理状态的影响。结果发现与空白对照组相比,实验红鲫在安全浓度范围内未出现死亡,生长状态良好,随着重金属铅浓度的不断增加,核异常率明显发生变化,血液中的乳酸脱氢酶也有明显的变化。     

在偏序集上单调函数的一些性质

给出单调函数在偏序集上的一些性质,并给予证明.同时,将全序集上的单调函数与偏序关系中的单调函数进行了比较.     

聚焦超声治疗129/J小鼠外阴上皮内瘤变模型的实验研究

为探讨聚焦超声治疗对小鼠外阴上皮内瘤变的影响,研究治疗前后VEGF表达变化,采用苯甲酸雌二醇注入40只129/J型鼠腹部皮下,7周时建立外阴上皮内瘤变轻到中度不典型增生(Vulvar Interaepithelial Neoplasia,VIN Ⅰ～Ⅱ)小鼠模型.随机分为聚焦超声治疗组和假照组,治疗前后检测皮肤病理及VEGF表达变化.建立VIN Ⅰ～Ⅱ小鼠模型16例.结果显示聚焦超声治疗组7例皮肤基本恢复正常,VEGF表达降低.与假照组相比差异均有统计学意义(P<0.05).由此得出,聚焦超声治疗小鼠外阴内上皮瘤样病变具有无创性、安全性和有效性.     

基于HS-树的所有MIPS求解算法

本体在语义web中扮演很重要的角色.本体的重用、合并或者进一步扩展都有可能导致本体不一致.目前很多解决本体不一致的方法都需要计算最小不一致保持子集(MIPS).本文利用HS-树方法给出了一种能够有效计算本体中所有MIPS的算法.实验表明该算法是有效的,尤其对于本体中包含不可满足的概念远远多于MIPS的情形更加有效.     

山口岩水库移民调查及安置分析

对萍乡市唯一的大型水利枢纽工程山口岩水库的工程情况和库区条件做了较为详细的介绍,并重点对水库移民的调查经过、调查成果以及移民的生产安置作了介绍和分析。     

法律信仰论析

法治已成为现代社会文明的标志。而社会民众对法律的信仰是法治社会的基石。与西方发达国家相比,社会公众对法律信仰的缺乏,在一定程度上已经影响到了我国的法治化进程。究其原因主要是我国缺乏法律信仰的宗教土壤与法治的真正价值没有得以弘扬所致。因此,我们应当积极培育法律信仰的土壤,夯实法律信仰的根基,培养公众信仰法律的情感和信心。     

基于相对概率分布的属性约简算法

鉴于现有属性约简算法大多是针对一致决策表不适合对不一致决策表的求解,且运行效率底.文章提出了一种新的决策表属性约简算法.首先判断决策表是否为一致决策表 如果是不一致决策表,则通过最大相对概率分布将其转换为一致决策表; 然后基于一致决策表的相对概率分布满足单点分布的性质来快速确定属性是否为冗余属性,从而求出约简; 并通过MATLAB和UCI学习数据库验证了该算法的有效性和高效性.     

Molecular regulation of development and differentiation inStreptomyces

Development and differentiation is an important and leading research field in modem biology. Streptomyces has a complicated life cycle of morphological differentiation including the spore germination, aerial mycelium and spore formation. Each developmental stage has a distinguished morphological feature which greatly facilitates the identification of developmental mutants, the complementary cloning and the spatial and temporal expression of the genes involved in differentiation. This characteristic of Streptomyces  is comparatively superior to other prokaryotic bacteria such as Escherichia coli, Bacillus subtilis and Myxococcus xanthus. Moreover, Streptomyces  also possesses a complicated physiological differentiation in which it produces a wide variety of secondary metabolites (more than half of the 12 000 or so known antibiotics), including many important antibiotics used in medicine, agriculture and industry. Studies on the molecular mechanism of antibiotic biosynthesis will be helpful in improving the antibiotic producer and developing some new medicines. In comparison with eukaryotic microorganism such as Asperillus nidulans,the structure of genetic material in Streptomyces  is simple,and it is linear and conkaryotes such as Streptomyces  cerevisiae. The large number of genes are the molecular basis of Streptomyces  differentiation,suggesting that the regulation mechanism of gene expression in differentiation and development may be complex^[1]     

Rate of decay in admixture linkage disequilibrium and its implication in gene mapping

Modeling linkage disequilibria (LD) between genes usually observed in admixed natural populations has been shown an effective approach in high-resolution mapping of disease genes in humans. A prerequisite to obtain accurate estimation of recombination fraction between genes at a marker locus and the disease locus using the approach is a reliable prediction of the proportion of the admixture populations. The present study suggested the use of gene frequencies to predict the estimate of the admixture proportion based on the observation that the gene frequencies are much more stable quantities than the haplotype frequencies over evolution of the population. In this paper, we advanced the theory and methods by which the decay rate of nonlinear term of LD in admixed population may be used to estimate the recombination fraction between the genes. Theoretical analysis and simulation study indicate that, the larger the difference of gene frequencies between parental populations and the more closely the admixture proportion approaches 0.5, the more important the nonlinear term of the LD in the admixed population, and hence the more informative such admixed populations in the high-resolution gene mapping practice.