轉化分率 的英文怎麼說
中文拼音 [zhuǎnhuàfēnlǜ]
轉化分率
英文
fractional conversion-
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。Analysis of saving - investment conversion efficiency and its incompletion system
投資的轉化效率及其不完全制度分析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。First, based on the rapid development trend of the global hi - tech and new - tech industry and aiming at the problem of the inefficient transformation of the hi - tech and new - tech achievements in china, the paper gives a thorough analysis of the supply - demand system, the planning system, the intermediary system, the incentive system as well as the competing system. second, it summaries the general law of the hi - tech and new - tech achievements transformation in china and puts forward some theories and operating models for effectively accelerating the hi - tech and new - tech achievements transformation. third, it puts forward an innovative system conducive for the hi - tech and new - tech achievements transformation
該研究有四項目標：一是依據全球高新技術產業迅猛發展的大趨勢，針對我國高新技術成果轉化效率低的問題，深入地分析了我國高新技術成果轉化（產業化）中的供求機制、計劃機制、中介機制、激勵機制和競爭機制；二是歸納出我國高新技術成果轉化一般規律，提出有效加快我國高新技術成果轉化的理論依據和操作模式；三是構架有利於我國高新技術成果轉化的國家創新體系；四是通過政策與建議篇提出促進高新技術成果轉化的基本途徑和政策措施。At last, the impact of the monolith length, cell density, wall thickness and noble metal dosage on the light - off characteristic and conversion efficiency of three - way catalytic converter are analyzed and could provide a guide for the optimization of three - way catalytic converter
本文還對載體長度、孔密度、孔道壁厚和催化劑用量對催化轉化器起燃特性和轉化效率的影響進行了分析，為載體參數的優化設計提供了依據。According to its configuration, the monolith is considered to be a porous media. based on the monolith model and the use of software fluent, the research on the light - off characteristic and conversion efficiency of three - way catalytic converter is processed
在所建催化轉化器模型的基礎上，根據載體具有分佈細小孔道的特點，將其作為多孔介質處理，利用fluent軟體，對冷起動階段三效催化轉化器的起燃特性和轉化效率作了數值模擬。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。2. second harmonic generation in superlattice is derived from the coupled equation of three waves i discusing the relationship between the period of ppln and pumping wavelength. 3. on the theory of optical parametric oscillators, ppln - opo are analyed. theoretical analysises on temperature tuning and period tuning are presented
以光參量振蕩理論為基礎，分析了ppln opo在不同泵浦波段的調諧特性，重點討論了加ln opo的溫度調諧和周期調諧特性以及ppln opo的溫度帶寬周期帶寬，從理論上研究了ppln opo信號光的轉化效率和輸出特性。Computer fluid dynamics ( cfd ) is adopted to simulate the flow fields of catalytic converter while researching the working process of emission postprocessor. the velocity field and pressure field of exhaust gas are obtained. methods of structural optimization of catalytic converter for improving gas flow and conversion efficiency are proposed
本文在汽車排氣后處理裝置工作過程研究方面，運用計算流體動力學軟體，對催化轉化裝置氣流場開展了模擬，得出了氣體速度場和壓力場的分佈情況，提出了以改善氣體流動和催化轉化效率的催化轉化裝置結構優化的方案。The results showed that : the rate of food consumption and growth, and ecological conversion efficiency tended to decrease with the body weight increase ; with comparison among three diets such as themisto gracilipes, artemia nauplii and fish mud, the result showed that artemia nauplii was very applicable to the ammodytes personatus laboratory experiment ; the experiment of different food size showed that mature artemia nauplii was fitter than larva
在餌料實驗中，分別投喂細長腳（蟲戎） 、鹵蟲和魚糜三種餌料，實驗的結果表明：僅管投喂細長腳（蟲戎）的生態轉化效率比較高，但從玉筋魚的攝食、生長及與野生的生長相比較來看，鹵蟲還是室內實驗選擇的最佳餌料。In the forth chapter, the pressure lose and conversion efficiency of catalytic converters with various configurations have been measured on a steady flow rig and analyzed in theory
第四章詳述了在穩流試驗臺上對不同結構催化器壓力損失和轉化效率的測量，並進行了理論分析。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。Studies on transformation of indica rice with bt - toxin gene mediated by agrobacterium tumefaciens precultured immature embryo and callus derived from young panicle, immature embryo and mature embryo were used as acceptor for genetic transformation mediated by agrobacterium tumefaciens, the transformation rate of the above acceptor was investigated respectively. the results showed that immature embryo after precultured for 4 ~ 6d was the best. in respect to the concentration of agrobacterium tumefaciens when calli were cotransformated in medium yeb, to agrobacterium tumefaciens eha 105, od value of 0. 8 was the best
採用農桿菌介導法將bt毒蛋白基因導入水稻同樣以上述兩種秈稻為主要研究材料，比較了分別以預培養的幼胚和幼穗、幼胚、成熟胚來源的愈傷組織作為轉化受體的愈傷組織轉化頻率，結果表明預培養4 6天的幼胚最適宜作為農桿菌介導轉化的受體；其次是來源於幼胚和成熟胚的生長狀態良好的胚性愈傷組織。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 results show that npt ii had already integrated into the genome of sinningia speciosa, and the transformation efficiencies of tmek2 and tmek2mut were 1. 7 % and 0. 7 %, respectively
用pcr法對轉化再生植株進行了檢測，證實npt已經整合到大巖桐的基因組dna中。野生型、突變型mapkk基因的轉化效率分別為1 . 7和0 . 7 。The author discussed the determination of selection pressure, measured the growth of calli and analyzed the influences of regeneration media on the regeneration of resistant calli in order to get some parameters to enhance the indica rice transformation frequency of particle bombardment
從秈稻基因槍轉化過程中選擇壓的確定、愈傷組織的生長規律以及不同分化培養基對抗性愈傷出苗率的影響上，探討了可能提高秈稻基因槍轉化頻率的參數。Salsa roots was significantly higher than that in leaves and shoots after bei ng treated with 400mmol / l nacl for 72h. and we also concluded that the transcriptional level of sspip in s. salsa leaves was increased after being treated with 400 mmol / l nacl for 4d and 6d respectively. transformation of soybean has been far from routine
大豆的遺傳轉化一直是作物基因工程領域的難點之一，自hinchee和mccabe分別用兩種不同方法轉化大豆成功得到轉基因植株以來，有關於此方面的研究一直沒有突破性的進展，具體來說最重要的一點就是轉化效率沒有顯著提高。Mature embryo - derived calli of japonica rice ( oryza sativa l. ) cultivars nipponbare were transformed using agrobacterium tumefaciens strain agl1 carrying a binary vector pcas04 harboring the marker gene, neomycin phosphotransferase gene ( nptii ), driven by a promoter from the ubiquitin gene in maize, a promoterless p - glucuronidase gene near to the left border of t - dna for trapping gene and a strong promoter, rice actin - gb promoter, near to the right border of t - dna as activation tagging. in this system, co - cultivation was simplified, special selection stages and pre - regeneration stage were omitted, the whole process was almost under continuous light at 30 ? except co - cultivation and transgenic plants began to generate only after 7 weeks calli were induced
在一步轉化系統中，光照高溫條件下培養的水稻愈傷組織從誘導開始經過4周時間就可以達到轉化實驗的要求，並且簡化、優化了整個共培養過程，省去了一篩、二篩和預分化步驟，只用7周的時間就可以初步得到再生轉化植株；共191塊愈傷組織得到125塊抗性愈傷組織，轉化頻率達到65 . 4 ，最後共得到99棵獨立來源的再生植株，抗性愈傷組織再生頻率達到79 . 2 。Filling factor of the cell is equal to the percentage of discharging time per working period. ideal filling factor of ac solar cell can reach to 1
理論分析表明，交流太陽能電池的填充因子可以無限接近1 ，交流太陽能電池的轉化效率大於相應的直流太陽能電池。Based on the investigation of factors influencing extension of the technique - inter - planting rice in wheat fields with super - high stubble remained, the transformation efficiency of technological achievement was analyzed
本文通過對超高茬麥田套稻技術推廣的影響因素及推廣途徑的研究，分析不同推廣途徑下成果轉化效率。分享友人