堿基取代 的英文怎麼說
中文拼音 [jiǎnjīqǔdài]
堿基取代
英文
base substitution-
Systemic research including the influence of the crown ether ring ' s symmetry, the size and the conformation on the liquid - crystalline behavior have been done in this paper. the synthesis way and method were improved. from the experimental results, it was found that : 1, compounds 2, 4, 16, 17 and 18 have liquid crystal properties
優化和改進了合成路線及方法，對席夫堿型液晶冠醚，因取代基的大小、冠醚環的大小和冠醚環的對稱性以及不同結構的順反構型對液晶性能的影響等諸方面進行了較系統的研究，取得了一系列具有規律性的結果。( 3 ) on the basis of the deletion analysis, three substitution mutants ( ml : 6bp sequence upstream of gcc box m2 : gcc box and m3 : g box - like sequence ) by pcr were designed to isolate the essential ja - responsive element. transgenic tobacco plants containing promoter substitution constructs were generated by agrobacterium - rnqdiaied leaf transformation. loss - of - function experiment, using transient expression analysis of gus reporter genes, confirmed that gcc box act as an essential element to respond ja signaling in pdf1. 2 promoter
（ 3 ）在缺失突變的基礎上，通過對gccbox及其相鄰的上下游六個堿基進行取代突變，將突變啟動子與gus構建融合基因，在煙草中受heja誘導的瞬時表達結果表明， h1和m3的突變對該啟動子應答ja信號的影響很小，而m2 （ gccbox的突變）則幾乎使該啟動子應答ja信號的功能完全喪失，所以gccbox是該啟動子中應答ja信號的必需元件。On the basis of detailed and systematic studies on the petrography, major and trace elements and sr - nd isotopic data of mesozoic volcanic rocks, especially the mafic volcanic rocks in yanshan area, we successfully studied the deep processes related to magma generation and their relationship with shallow - level tectonic evolution. the major conclusions are summarized as below. 1
論文通過對燕山地區中生代火山巖，特別是中基性火山巖，進行詳細而系統的巖石學、主微量元素地球化學特徵和sr - nd同位素組成特徵的研究，主要取得了以下研究成果： 1燕山地區中生代（ j - k ）火山巖為一套鈣堿性-高鉀鈣堿性-橄欖安粗巖系列巖石。
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