鄭源根 的英文怎麼說
中文拼音 [zhèngyuángēn]
鄭源根
英文
chung won keun-
In order to form a chloroplast transformation system of d. salina, we have conducted some studies including its sensitivity to antibiotics, the activity of promoter, cloning of the chloroplast genes and construction of transformation vectors, so far a pilot transformation system of the d. salina chloroplast has been completed. methods : the sensitivity of d. salina to seven antibiotics or herbicide used commonly in gene engineering was studied and the biological activity of atpa promoter from c. reinhardtii chloroplast was tested by using enhanced green fluorescent protein ( egfp ) as a reporter. primers were designed in the conservative encoding regions according to the chloroplast genomes from four algae which have close genetic relationship with d. salina, and the sequences of 16s rrna, chll and chln of d. salina chloroplast were cloned and sequenced, respectively
方法:根據杜氏鹽藻的近緣藻類的葉綠體基因組序列資料，在基因編碼區的高度保守區域設計引物，克隆了杜氏鹽藻葉綠體165識na基因、咖l基因和ch n基因，並分別以165識na基因和chln基因序列為同源片段，以cat和bar基因為篩選標記基因構建了三套杜氏鹽藻葉綠體轉化載體: 2鄭州大學2003年博士學位論文杜氏鹽藻（ d ~ iiellasalina ）葉綠體轉化研究pds165一eaf 、 ptn1269一bar和psp72一5一bar一3 ，用基因槍法轉化杜氏鹽藻，初步建立起杜氏鹽藻葉綠體轉化體系。The solving steps are as follows : the field is divided into three regions by the cylindrical surface of the finite - length cylinder and the location of the delta - coils. because " the surface current source is placed at the interface, the non - homogenous restricted equation on the magnetic vector potential is transformed into the homogenous helmholtz equation. by using the method of separation of variables to solve equation and according to the interface conditions and the condition at infinity to determine the unknown constants, the expressions for the magnetic vector potential of the three regions are solved out
在求解過程中，假定放置式圓柱線圈是由無窮多個對稱圓環線圈密饒而成，首先求解含有有限長磁芯的通電對稱圓環線圈的電磁場：以有限長圓柱磁芯的側面和圓環線圈所在圓柱面為分界面將場域劃分為三個小區域，由於場源放置在內邊界面上，使得關于矢量磁位的非齊次約束方程轉化成齊次亥姆霍茲方程，利用分離變量法求解，根據分界面鄭州大學碩十研究生畢業論文摘要條件以及無限遠條件確定待定常數，從而得到各場區矢量磁位的表達式。
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