轉導效率 的英文怎麼說
中文拼音 [zhuǎndǎoxiàolǜ]
轉導效率
英文
transduction efficiency-
In this study, the stem segments of new shoot with axillary buds of well - growth tetraploid black locust trees were used as explants. the effects of different basic mediums, different hormone kinds and their concentrations ratios, different sucrose concentrations on calli induction, buds differentiation and rooting in the process of establishment of high frequency regeneration system of tetraploid black locust were studied. on the base of high frequency regeneration system, the effects of various factors on transformation efficiency of badh mediated by agrobacterium tumefaciens were discussed in the light of gus histochemical assays
本實驗首先以生長良好的四倍體刺槐優株上當年生新梢的帶腋芽莖段為外植體，研究了在四倍體刺槐高頻再生體系的建立過程中不同基本培養基、不同激素濃度及其配比、不同蔗糖濃度對愈傷組織的誘導、芽的分化及生根的影響；然後在得到高頻再生體系的基礎上，通過農桿菌介導法轉化甜菜堿醛脫氫酶（ badh ）基因，以gus染色組織分析為依據探討了影響轉化效率的各種因素，建立了高效、可重復的基因轉化體系，為四倍體刺槐目的基因的導入打下了基礎。Part 3 : the paper set out from big system and coordination view, use the systematic dynamics method to analyse all - sidedly that the city expands the relation with various kinds of ecological factors, and natural factor discern mode of city develop, point out city ecological problems are production by improper use the environment ecological factor during city expand, it cause the problems production, such as the function of natural system disappearance or lose efficiency ; systematic circulation obstruct, material energy transform efficiency being low, and so on
第三部分：從大系統大協調觀出發，運用系統動力學方法全面分析城市擴展與各種生態因子的因果關系，及城市發展的自然因子識別模式，指出城市生態問題的產生是由於城市擴展對環境生態因子的不當使用，導致自然系統功能的缺失或失效，系統循環受阻，物質能量轉化效率低下等問題的產生。At the same time the effection of some important recombinations are discussed and the relation of photoconduction versus time is given. in chapter 4, auston circuit, blumlein pulse forming line, multiplier of pulse forming line are introduced and give their differentiates
在第四章中，分析各種以光導開關為核心器件的電脈沖成形電路: auston電路、 blumlein脈沖成形線、層疊線倍壓器，對其輸出轉換效率進行比較，並進行實驗研究。This study was conducted to examine the interrelationship of 10 seed vigor traits in 12 wheat genotypes through variance, co - variance and path coefficient analysis, to determine broad - sense heritability, and to estimate genetic advance under selection. the genotypes showed significant difference for all traits, except for percentage of normal seedling. genetic correlation between conversion efficiency of seed reserve, electrical conductivity with other traits were not significant, showed that selection for any of them might be possible without hampering any other traits. however path coefficient analysis indicated that conversion efficiency of seed reserve, seed reserve utilization ratio have strong direct effect in affecting seedling weight, and that mean germination time has significantly negatively correlated in affecting gi. moderate to high estimates of broad - sense heritability, genetic coefficient of variation and expected genetic advance were obtained for electrical conductivity, germination index, mean germination time, seed dry weigh, seedling dry weigh, seed reserve depletion ratio indicating the possibility for improving these traits
本研究利用12個普通小麥品種對10個種子活力性狀的遺傳變異和相關研究，表明除正常幼苗百分率外，其餘種子活力性狀在品種間均存在顯著的差異.種子貯藏物質轉換效率、電導率兩個性狀間及與其它性狀均無顯著的遺傳相關，因此對他們的選擇不會影響到其它性狀.通徑分析表明幼苗干重主要取決于種子貯藏物質轉換效率、種子貯藏物質利用速率;發芽指數主要由平均發芽時間決定.電導率、發芽勢、幼苗干重、種子干重、發芽指數、種子貯藏物質消耗比率6個性狀表現中到高的遺傳力、遺傳變異系數和相對遺傳進展，指明通過遺傳育種手段改良這些性狀是可能的4. according to the cefgshg, the fundamental light radius was optimized when the length of bbo crystal was constant. 5
根據所推導的高斯光束倍頻轉換效率公式，對bbo倍頻晶體在長度確定的情況下，對基頻光斑進行了優化。The transformed hairy roots were detected for agropine to make sure the transformation was successful. a conclusion was reached as follows : agrobacterium rhizogenes r1601 was an ideal strain for hairy roots transformation from trichosanthes bracteata voigt which exhibited extraordinary transformation rate ( 60 % ). od600 = 0. 7 was the optimum infection concentration for the tested transforming agent, with temperature at 25, ph at 6. 0, 20min of infection and 48h of co - culture and phytohormone at 1. 0mg / l being the most favourable hairy root - inducting pattern
通過實驗和對結果的數據分析，得出下面的結論：發根農桿菌r1601是較好的大苞栝樓發根的誘導菌株，它對預培養24h的大苞栝樓子葉外植體具有最好的轉化效率和發根誘導率（ 60 ） ，最適的菌株感染濃度od _ （ 600 ）為0 . 7 ，溫度27 、 ph值為6 . 0 、 20min的感染時間和48h的共培養，以及黑暗條件和1 . 0mg / l的激素最有利於發根誘導的環境條件。Laser diode ( ld ) has the advantages of small volume, light weight, longevity of service, high electro - optic convert efficiency and direct modulate etc. now it is more widely used in the fields of information, energy, therapeutic, material, entrainment and so on
半導體激光器（以下簡稱ld ）具有體積小、重量輕、壽命長、電光轉換效率高、可直接調制等優點，目前在信息、能源、醫療、材料、娛樂等諸多領域都得到了越來越廣泛的應用，材料和器件的水平也有了長足的進展。The primary factor to limit seed setting was the windy psychro - environment which limits the activities of insects, leading to the insect number to visited flowers decreased. all these factors induced the low setting percentage
結果表明，限制結實的主要因素是高寒多風的環境限制了昆蟲的活動，訪花昆蟲數量減少，從而使花粉轉移效率降低，導致了低的結實率。With the precondition that invitro tissue could survive after implantation, the study on transferring gus gene into arabidopsis callus was done. and we got the transformants. transformation efficiency was up to 2 %
在活體組織注入后可以存活的前提下，通過對離子束介導質粒dna導入擬南芥愈傷組織的遺傳體系的研究，得到了gus基因轉入擬南芥愈傷組織的轉化植株，轉化效率達2 。Abstract : techniques of apple genetic transformation can improve apple trees and shorten the breeding cycle by molecular methods. in the last years, great progress has been made in this field, which involves a number of important apple genotypes developed. so far, apple genetic ransformation mainly adopts agrobacterium - mediated technique, involving infection and transgenic tissue regeneration, which are important steps to affect the transformation efficiency. the initial work to the date is to know and to search for the factors which can increase the efficiency
摘要蘋果的遺傳轉化技術通過分子手段改良蘋果，有助於縮短其育種周期.最近十年，在該領域的研究取得很大進展，涉及到一些重要的蘋果基因型及有用的外源基因.迄今，蘋果的遺傳轉化主要採用農桿菌介導法，侵染與轉化材料的再生是影響其轉化效率的關鍵過程，了解其影響因素，尋找有利因素以提高轉化效率是目前蘋果遺傳轉化研究的重點。The conversion efficiency formula of the flat wave for second - harmonic generation was deduced in detail. and that of the gaussian wave for second - harmonic generation also was given in the small signal deliver
詳細推導了平面二次諧波的倍頻轉換效率公式，介紹了小信號近似下高斯光束的倍頻轉換效率公式。39 % of total conversion efficiency at pump level of 600mw 858nm is obtained experimentaily with our single - resonant, external ring frequency - doubler pumped by tr. sapphite laser at room temperature ( about 21. 50c ). the conversion efficiency is seriously limited by what is called " blura " ( blue light induced infrared absorption ) and thermal effects. yet, up to 137 mw of cw blue light at 429nm at pump level of 565 mw has been achieved and stabilized over a hour when the cavity is locked via pound - drever - hall ( pdh ) technique
泵浦功率為600mw時，由於兩種效應「藍光導致紅外吸收（ bliira ） 」和「熱效應（ thermaleffects ） 」的嚴重影響，室溫下（約21 . 5 ）獲得了39的倍頻轉換效率；採用邊帶鎖頻技術， 565mw的泵浦光獲得137mw的藍光輸出，在沒有外界強烈的干擾下可以鎖定1小時以上而不失鎖。It was concluded that using the nopaline type of agrobacterium ( e. g. c58 ), 5min vacuum infiltration, and using the plants with just several blooming flowers would give the best results
其中以開花初期的植株，利用胭脂堿型農桿菌介導（如c58 ） ，真空滲入5分鐘的處理方法轉化效率最高。The main purpose of this paper is to offset the pitfalls mentioned above from two aspects : on one hand, to put forward an overall analytic skeleton on the corporate control trading efficiency, on the other, to conduct comprehensive comparisons among the efficiency of different trading models by using the skeleton
本文力圖從兩方面彌補這一缺陷：一方面提出一個對公司控制權轉讓效率進行總體分析的框架；另一方面則利用這一框架對各種轉讓方式間的效率差異進行綜合比較，力圖得出對公司控制權轉讓實踐有指導意義的結論。It is based on umc 0. 6 m bcd process. a built - in power mosfet with low on - resistance and a lossless current sensing circuit on chip provide fast and precise current mode control. furthermore, the whole losses decrease and high efficiency up to 90 % can be obtained
它採用umc0 . 6 mbcd工藝製程，利用內置的低導通電阻功率mosfet和內置的無損耗電流感應電路實現了快速精確的電流模式控制，同時也降低了功耗，提高了轉換效率，典型的效率可達90 % 。Our experiment indicates : ( 1 ) the optimal concentration of kanamycin for screening torenia fournier regenerated buds was 400 mg / l. the ideal transformation was obtained in the following conditions : the leaf discs were dipped in agrobacterium suspension that od600 was 0. 1 for 10 ~ 20 min ; subsequently cocultivated on the ms solid coculture medium containing 20umol / l acetosyringon for 7 to 8 d at 23, and the induction ratio of regenerated buds was 27. 2 %
研究結果表明： （ 1 ）篩選藍豬耳轉化芽的最適卡那黴素濃度為400mg l 。 od _ （ 600 ）為0 . 1的菌液濃度菌液浸染葉盤10 20min ，固體共培養基（含20 mol l乙酰丁香酮）上23共培養7 8d可獲得理想的轉化效率，轉化芽誘導率為27 . 2 ； 16h光照， 8h黑暗是較理想的共培養光周期；莖段是較好的轉化受體。Kurane s, kranss jc, watari e, et al. targeted gene transfer for adenocarcinoma using a combination of tumor - specific antibody and tissue - specific promoter [ j ]. jpn j cancer res, 1998, 89 ( 11 ) : 1212
李芳，伍新堯，郭語彬，等.陽離子脂質體介導肺癌細胞基因轉移效率的比較研究[ j ] .中山醫科大學學報， 2000 ， 21 （ 6 ） : 484However, the pure cdte films have high electrical resistivity and this is mighty unfavourable to improve the conversion efficiency of cdte solar energy cells, and the best way is to doping donor or acceptor in pure cdte films
但本徵cdte薄膜均為高阻半導體，這對于提高cdte薄膜太陽能電池的光電轉換效率是極為不利的，要提高cdte薄膜的光電性能必須通過施主或受主的摻雜。( 2 ) the damping mechanism of multi - energy transitions takes effect when the vgcf content is among the semi - conductive area. when the vgcf content is low ( below 8 % ), the vgcf conductive circuit does not form and the heat loss is quite little. when the vgcf content is higher than 20 %, the transition efficiency between electric energy and heat is limited
這是由於當vgcf含量太少時（低於8 ） ，復合材料中導電網路還沒有來得及形成，起不到能量損耗的目的；而當vgcf含量太高時（高於20 ） ，電導率太高，復合材料成為電的良導體，電能與熱能之間的轉換效率很低，能量損耗也不高。4. the expression vector was introduced into young embryo - derived calluses of weeker winter - type wheat variety " youngmail58 " by agrobacterium - mediated and biolistic transformation, and 15 gus - positive plant lines were regenerated. the transformation rates by agrobacterium - mediation and biolistic bombardment were 1. 23 % and 1. 71 %, respectively
將所構建表達載體分別用農桿菌介導法和基因槍法導入半冬性小麥品種「揚麥158 」的幼胚愈傷，共獲得15株gus陽性苗，其中農桿菌法的轉化效率為1 . 23 ，基因槍法的轉化效率為1 . 71 。分享友人