从对流免疫扩散电泳免疫复合物沉淀线提取抗原小核RNA的方法

可提取性核抗原(ENA,包括Sm、RNP、Ro和La等多种抗原成分)是小核RNA和蛋白质组成的复合物。本文介绍从对流免疫扩散电泳(CIDE)形成的免疫复合物沉淀线提取单一抗原小核RNA的方法。其结果与纯化抗原的小核RNA组成相同。此法仅需约100微升的单价特异性抗体,抗原不需纯化,操作简单易行。     

鲤鲫LDH同工酶的薄层等电聚焦电泳

采用高分辨率的薄层等电聚焦电泳技术和酶活性特异染色法相结合把鲤鲫LDH同工酶区分为24条电脉区带,发现鲤鲫LDH同工酶电泳区带,具有种间相似性。     

集成毛细管电泳芯片研究进展

集成毛细管电泳芯片是一种新型的微全分析系统,它具有被分析的样品用量少、分析速度快、体积小便于携带、成本低等优点,介绍了该芯片的产生和发展过程,综述了芯片的结构、进样方式、检测方法等方面的进展和存在的问题;简述了其主要应用领域并展望了其应用前景。     

Degradation of organic matter in the sediments of Hongfeng Reservoir

In this work, the distribution of organic carbon, DNA and lipids in the sediments of Hongfeng Reservoir were described in addition to SO4^2- profile in pore water. The contents of organic carbon in the sediments range from 23.3 to 76.8 mg·g^-1, with the peak value appearing at the depth of 8 cm bellow the sediments water interface （SWI）, and tend to decrease gradually with sedimentation depth. The concentrations of SO4^2- decreased from 40.50 mg·L^-1 to 12.00 mg·L^-1 at SWI in top 4 cm sediment, and was kept at 12.0 mg·L^-1 bellow that depth. Newly produced organic carbon can be conserved as long as 14 years in the sediments. The contents of DNA were relatively high in top 9 cm surface sediments, as revealed by agarose gel images, close to those of organic carbon and sulphate reduction index （SRI）. This study shows that bacteria played an important role in organic matter degradation; SO4^2- is the primary electron acceptor under anaerobic condition in this reservoir; DNA in the lake sediments can provide important information for the study of cycling of nutrient elements in the lake.     

Analysis of Male Sterility-Related Proteins of Young Panicle in Rice （Oryza sativa L. ） by Two-Dimensional Electrophoresis

For searching out male sterility-related proteins (polypeptides) in rice (Oryza sativa L.), we examined the difference of panicle protein (polypeptides) between hybrid rice (Wujin2A/R168, Wujin5A/R988) and their parents (male-sterile line Wujin2A, Wujin5A, and restorer line R168, R988) at the formation stage of pollen mother cell by two-dimensional electrophoresis (2-DE). The results revealed that the 2-DE polypeptide maps were similar among these experimental materials. A small group of polypeptides were disappeared in 2-DE polypeptide maps of male-sterile line (Wujin2A, Wujin5A) by comparing to restorer line (R168, R988) and the first filial (F₁) generation (Wujin2A/R168, Wujin5A/R988). The isoelectric points of these polypeptides were pI 5.8–6.5 molecular, weight 42.7×10³−66.2×10³. Foundation item: Supported by the National Natural Science Foundation of China (30340079) and the Science and Technology Key Research Foundation of the Education Ministry of China (03109) Biography: HU Yao-jun (1960-), male Ph. D candidate, research direction: molecular cytogenetics.     

D-和L-肉碱对映体的毛细管电泳分离研究

提出了用毛细管区带电泳分离和检测肉碱对映体的方法。肉碱消旋体用4-溴苯甲酰甲基溴衍生化，并经选择性手性试剂——磺化β-环糊精和手性冠醚[(S，S)-l，7-bis(4-苯基-5-羟基-2-氧-3-氮苄基)-l，7-二氮杂-12-冠-4]协同作用后，可得到良好分离，并用紫外检测器检测，两异构体的检测下限约为80ng／mL。     

多对强与弱反应电解质形成的多移动化学反应界面

由多对强、弱反应电解质形成的多移动化学反应界面（MMCRB）模型，可推导出一系列的多移动化学反应界面方程（MMCRBE：s），结果显示：移动化学反应界面（MCRB）模型不同于MMCRB模型，MCRBE:s只是MMCRBE：的一个特列。因此，MMCRBE：s是对MCRB理论的推广，这为研究及设计新的分离技术、研究新的测定反应离子迁移数和淌度的方法、研究“等电聚焦电泳（IEF）”机制等方面提供了理论依据。     

二甲亚砜对水稻浸种及苗期的后续效应研究

报道了二甲亚砜(DMSO)对水稻种子"金优"、"特优"萌发的影响,并对以后若干性状进行研究.结果表明,不同浓度的DMSO溶液对水稻种子初期萌发及其后幼苗的根长与苗高皆有一定的影响.0.05%DMSO对水稻的根长有促进作用.另根据过氧化物同工酶电泳分析表明:DMSO处理表现出明显的短期效应.