Analysis of the MSS51 region on chromosome XII of Saccharomyces cerevisiae.

We have localized gene MSS51 on chromosome XII of Saccharomyces cerevisiae between the RDN1 and CDC42 loci. 'Head to head' with MSS51 is another gene, QRI5, the function of which is unknown. However, the proximity of these genes, the structure of the intergenic region and the presence of an ABF1 binding site right in the middle of this region suggest that the MSS51 and QRI5 expressions are submitted to a common regulatory process.     

关于砂金工艺矿物学研究规范化的建议

本文从样品的采集、加工、制备到砂金性状、矿砂物质组成;从分离、鉴定质量要求到选矿产品考察;从矿砂可洗性、可选性评价到矿砂工艺类型确定等项内容的系统化、标准化,阐述了砂金工艺矿物学的研究规范。     

Liquid–liquid extraction of a recombinant protein with reverse micelles

Recombinant cytochrome b₅ was extracted into the reversed micelle phase of an anionic surfactant (AOT) in octane and back-extracted to a final aqueous phase. The extraction of the protein was controlled by an electrostatic mechanism, since it was dependent on the global charge of the protein. This was directly demonstrated by experiments with native and mutant cytochromes obtained by site directed mutagenesis. The back-extraction of cytochrome b₅ to a fresh aqueous phase was decreased by factors that reduced the size of the water pool of the organic phase, such as high salt concentrations (1–2 mol dm^?3 NaCl) and low temperatures (4°C), probably because of an increase in a favourable interaction of this protein with the surfactant at closer distances.     

水工钢闸门聚酯玻璃钢复合防腐处理方法

水环境的恶化，使水工钢闸门腐蚀加重，传统的防腐工艺保护效果下降。聚酯玻璃钢复合防腐层的水工钢闸门防腐工艺具有使用设备少，工艺简单、防腐效果好、成本低等优点，适用于在各种水环境中作各种形式的水工钢闸门防腐，效果良好。该文结合江苏省淮海农场工程施工经验，提出了水工钢闸门聚酯玻璃钢复合防腐层结构设计、施工工艺及质量标难，为今后的推广应用提供了一定的参考依据。     

数字电视及其标准

电视技术的数字化是电视领域发展的必然趋势，它给电视技术带来了质的飞跃。在对比分析了电视模拟技术与电视数字技术的区别的基础上，对数字电视的相关技术及其标准进行了介绍，并提出了作者的看法与见解。     

Provision of accuracy for quantitative determination of small amounts of components: Principles of resolving the problem and their realization

Versions are suggested for resolving the problem of monitoring the accuracy of determining small amounts of components in samples of substances and materials. __________ Translated from Izmeritel'naya Tekhnika, No. 1, pp. 52–57, January, 2006.     

P油田长4+52小层孔隙度三维模型的建立

为了更准确的评价P油田主要产层长4 52小层的储集能力，以随机模拟建模方法对该层的孔隙度进行研究，建立孔隙度分布三维模型。研究表明，长4 52小层属于低孔储层，平均孔隙度为11．85％。根据P油田储层物性分类原则，该储层在本区分布较为广泛，是今后挖潜的重点。     

Yeast mutants with increased bacterial transposon Tn5 excision

Five complementing recessive mutations that exhibit increased bacterial transposon Tn5 precise excision in yeast Saccharomyces cerevisiae were obtained by ethylmethanesulfonate treatment. One of these mutations (tex1) was submitted to extensive genetic analysis. tex1 is a recessive temperature-sensitive mutation resulting in a 20-100-fold increase in Tn5 excision. It also has increased frequencies of ochre mutation reversion, of forward mutation to canavanine resistance, and loss of chromosome III or its right arm. The possible mechanism of tex1 effects is discussed.     

锆(Ⅳ)-3,5-diBr-PADAP-安替比林三元配合物的分光光度研究与应用

本文提出在安替比林存在下,以3,5-diBr-PADAP为显色剂,分光光度测定微量锆的新方法。在pH1～2的HCl介质中,锆(W)与试剂和安替比林形成配合比为1:1:1的红色三元配合物,最大吸收值在615nm波长处,摩尔吸光系数ε=1.35×10~5。锆(Ⅳ)量在0～25μg/25ml范围内,遵守比尔定律。方法简单、快速、准确。若采用钽试剂—苯萃取法分离共存离子,可适用于钽铌矿和合金中痕量锆的测定。     

光谱法快速测定土壤中的多个微量元素

本法采用碳酸钡、氟化锂、石墨粉作缓冲剂，用锑做铅锌的标．用铪作铌的内标，用钯作铍、铬、镧、锶、铜的内标。采用小孔电极，交流电弧做为激发光源，同时测定铅、锡、锌、铍、铬、镧、铌、铜、锶等九个元素。分析数据基本稳定．能达到土壤样品的检出限要求。