R 质粒:通称抗药性因子(Resistant factor, R factor),编码一种或数种抗菌素抗性基因,并能 将此抗性转移到缺乏该质的适宜的受体细胞中去。
基于14个网页-相关网页
R-factor analysis R型因子分析
r-factor r因子
power r factor 功率因数
major r factor 主要因素
master r factor 决定因素
barrier r factor 势垒穿透率
R-factor control 减径因子
r factor analysis r因子分析
transmissible R factor 可传递R因子
The R factor analysis shows that: Ti, Ga, Rb, Y, Zr, Nb, Hf, SiO_2, Al_2O_3, P, Mn, Zn, As, Br, Sr, MgO, CaO and Na_2O are mostly related to the povenance of source rocks which was directly controlled by the chemical weathering intensity; Zr, Hf, V, Co, Ni, Cu, Zn, Ga, As, Rb, Fe_2O_3, Al_2O_3, and K_2O can reflect the content of clay which is possibly related to the element redistribution in the process of diagenesis; Fe_2O_3 P and Mn can record the paleo-productivity and Fe_2O_3, MnO are usually formed under the condition of adlittoral and oxidated environment. Warm-humid and cold-dry environment can been qualitative indicated by Q factor analysis.
对样本的Q型因子分析,可以定性地区分出暖湿与干冷环境。
参考来源 - 苏北盆地兴化1孔元素反映的中更新世以来的环境变化·2,447,543篇论文数据,部分数据来源于NoteExpress
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