搜索结果: 1-6 共查到“知识库 理学 Mar”相关记录6条 . 查询时间(0.031 秒)
Radium depletion and 210Pb/226Ra disequilibrium of Marítaro hydrothermal deposits, Los Azufres geothermal field, Mexico
hydrothermal deposits 210Pb 226Ra radium adsorption Los Azufres
2017/4/11
In order to calculate the chronology of hydrothermal deposits precipitated from hot springs at Marítaro, Los Azufres
geothermal field, Mexico, their 224Ra, 226Ra, 228Ra and 210Pb activities were meas...
Shallow landslide prediction in the Serra do Mar, São Paulo, Brazil
Shallow landslide prediction Serra Sã o Paulo Brazil
2010/10/21
Various methods are currently used in order to predict shallow landslides within the catchment scale. Among them, physically based models present advantages associated with the physical description of...
植物的MAR及其对转基因表达的效应
植物 基质附着区 转基因表达
2008/1/4
与核基质结合的DNA序列称为基质附着区（matrix attachment regions，MARs），可提高转基因的表达水平并降低转基因在不同转基因系间的表达差异，因其在植物基因工程中的巨大应用潜力而引起了研究者的极大兴趣。对植物中MAR的研究尚处于早期阶段，本文综述了植物中MAR的分离鉴定、序列特征及MAR对植物中转基因表达的影响，并进一步讨论了MAR对转基因效应的可能机制。
摘要 为减轻逆转录病毒介导的外源基因的沉默 ,进一步提高逆转录病毒MFG载体介导的转移基因的表达 ,将人 β INF基因上游 80 0bp的核骨架基质结合区 (S MAR)分别反向和正向克隆至MFG载体 3′LTR上游 ,以egfp为报告基因观察S MAR对egfp基因表达水平以及对病毒滴度的影响 .结果显示 :反向和正向的S MAR在瞬时表达的情况都不能提高egfp的表达 ,但在稳定整合的情况下...
Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR
Reconstruction Greenland ice sheet surface mass balance regional climate model MAR
2010/2/4
Results from a 28-year simulation (1979–2006) over the Greenland ice sheet (GrIS) reveal an increase of solid precipitation (+0.4±2.5 km3 yr−2) and run-off (+7.9±3.3 km3 yr−2) of surface m...