四川红层分布区地下水水化学若干问题探讨——以自贡市为例

利用钻孔试验分析了自贡红层分布区地下水水化学的水平及垂直分布特征,探讨了该区地下水的水化学特征及形成原因,进而探讨红层水资源开采等引起的咸淡水混合、水质变化等相关环境问题.     

Molecular cloning and expression of interleukin Ibeta (IL-1β) from red seabream (Pagrus major)

The interleukin 1β (IL-1β) cDNA was cloned from the red seabream (Pagrus major) by homology cloning strategy. A cDNA fragment was amplified by PCR using two degenerated primers, which were designed according to the conserved regions of other known IL-1β sequences, and elongated by 3' ends and 5' ends RACE PCR to get the full length coding sequence of red seabream IL-1β (RS IL-1β). The sequence contained 1252 nucleotides that included a 5' untranslated region (UTR) of 84bp, a 3' UTR of 410 bp and an open reading frame (ORF) of 759 nucleotides which could be translated into a putative peptide of 253 amino acids with molecular weight of 28.6 kD and putative isoelectric point pI of 5.29. The deduced peptide contained two potential N-glycosylation sites and an identifiable IL1 family signature, but lacked the signal peptide and the clear ICE cut site, which were common in other nonmammalian IL-1β genes. The RS IL-1β had the highest homology with piscine IL-1β according to phylogenetic tree analysis.     

分子筛负载HPA/TiO2催化剂的性能

报道了分子筛负载杂多酸和二氧化钛催化剂MS／HPA／TiO2的制备及其对品红溶液降解的效果，系统研究了催化品红溶液降解的优化条件。实验表明，MS／HPA／TiO2具有良好的催化活性且容易回收。当MS：HPA：TiO2=1：10：1，品红的浓度为0．005％（10mL），催化剂的用量为10mg，反应时间为10min，品红的降解率达到96．87％。     

Impoverishment of Soil Nutrients in Gully Erosion Areas in Yuanmou Basin

The impoverishment of soil nutrients of nine gully head areas in Yuanmou Basin is assessed through an integrated evaluation method established on the basis of Fuzzy mathematics and multivariate mathematical theory. Results show that soil erosion of gully erosion area in Yuanmou basin has resulted in severe impoverishment of soil nutrients. All gully head areas are at high leves of impoverishment except for one at middle. By probing into and analyzing the mechanism of impoverishment of soil nutrients, we find that soil erosion has led to impoverishment of soil nutrients in a way of compacting soil, heightening position of obstacle horizon, and reducing the content of organic matter, as well as the direct loss of nutrient elements. Finally, this paper points out that soil and water conservation arming at the prevention of soil erosion is the most effective way against impoverishment of soil nutrients in Yuanmou basin.     

亚硝基血红色素食品着色剂的研究

本文以健康的猪、牛、羊的新鲜牲血为原料，经化学提取、合成及酶解等简单步骤、研制成了亚硝基血红色素食品着色剂。该产品可替代具有毒性作用的亚硝酸盐而直接加入食品着色，是一种无毒副作用的理想的调味食品着色剂，同时也增强了食品的营成份。     

苏丹Ⅰ替代番茄红素和β-胡萝卜素标准品的研究

番茄红素是一种具有多种生理功能的类胡萝卜素，由于含有数目众多的双键，极易发生氧化和顺反异构化，而在HPLC检测中需要使用番茄红素标准品以确定保留时间和计算样品中番茄红素的含量，但番茄红素标准品价格昂贵，且本身稳定性差，不宜长期保存。文中根据苏丹Ⅰ在450nm处和番茄红素、β-胡萝卜素具有相同的吸收特性，研究用苏丹Ⅰ替代番茄红素和β-胡萝卜素标准品，检测误差不超过2%；说明苏丹Ⅰ可用作标品进行番茄红素和β-胡萝卜素的检测。得到了番茄红素和β-胡萝卜素的计算公式。     

含氟聚合物在赤磷基抗红外发烟剂中的应用

在实验室条件下利用多波段红外辐射仪，测试了含四种不同聚合物的赤磷发烟剂燃烧产生的烟雾在远红外波段的透过率，并使用粉尘取样仪测试了烟雾的质量，计算出了各种烟雾质量消光系数．试验结果和计算表明：以含氟聚合物的赤磷发烟剂燃烧产生烟雾在远红外波段的质量消光系数最高，透过率最低，并分析了上述烟雾在远红外波段具有不同质量消光系数的原因．     

DNA与中性红相互作用电化学和光谱研究

利用电化学和光谱方法研究中性红和DNA的相互作用,根据其循环伏安曲线和紫外-可见光谱,在pH=7.05缓冲体系中中性红与DNA发生了嵌插作用.     

红曲色素生产中代谢调控的研究进展

红曲色素由红曲霉发酵而得,它的发酵质量直接影响红曲色素的产量和质量.文章对近几年红曲色素发酵中代谢调控的研究进展以及控制过程中建立的数学模型作一简单介绍.     

苏丹穆格莱德盆地古近系储层微观特征分析

从储层的岩性、成岩作用、孔隙类型及影响孔隙结构的因素等方面，对苏丹穆格莱德盆地古近系储层的孔隙结构特征进行了分析，揭示了该储层的微观特征及其对开发的影响。研究结果表明，该储层以岩屑石英砂岩及长石石英砂岩为主，结构成熟度低。成岩作用类型多样，成岩阶段进入早成岩B亚期。孔隙类型以原生粒间孔为主，有少量溶蚀孔。孔隙结构以粗孔粗喉型为主，少量中孔中喉型。压实作用、岩石粒度及泥质含量是影响研究区储层孔隙结构的主要因素。同时还指出，储层岩石粒度、泥质含量受沉积相控制，须加强沉积微相的研究；粘土矿物以高岭石为主，具有速敏性，在油田注水开发时为防止伤害孔隙结构和破坏储层，应采取适当的注水速度。