速甲基化 的英文怎麼說
中文拼音 [sùjiǎjīhuà]
速甲基化
英文
flash methylation-
The oxide and reduce potential and the dopant concentration. the experiments of degradation methyl blue a1so showed that the photocatalytic activity could be greatly improved with vzos - loaded tio2, maybe that loading v2o5 would accelerate the electron captured and charge transferring, change the samp1e surface hydrophilic and absorption
納米tio _ 2 - v _ 2o _ 5復合光催化劑對次甲基藍的降解實驗表明,復合v _ 2o _ 5后tio _ 2可以加速電子捕獲和電荷遷移速率,改變了樣品表面吸附親合力,使降解效率相比純tio _ 2有很大提高。They are applied to different situations and verified by experiments. analysis model of small ap oblique penetrating ceramic / metal light armor is established on the basis of energy model and the assumption of ellipse absorbing the same energy in back plate, giving the predictable formula about ballistic limit velocity. with energy model the optimization design in relation to ceramic / metal light armor is analyzed and the optimal coefficient of ceramic / metal composite armor is gained
本文的主要研究內容如下: (一)建立了小型穿甲彈垂直侵徹陶瓷/金屬輕型裝甲的動量模型和能量模型,它們分別適用不同情況,並通過試驗驗證;基於能量模型和背板橢圓吸能相同假設,建立了小型穿甲彈斜侵徹陶瓷/金屬輕型裝甲的分析模型,給出了彈道極限速度預測公式;利用能量模型對陶瓷/金屬輕型裝甲的優化設計進行了分析,給出了陶瓷/金屬復合裝甲的最佳優化系數。Nonpolar solvent with little dielectric constant has good effect to the rate of the reaction, while larger polar solvent without h ( superscript + ) also can increase the rate of the reaction
可以知道對甲醇羰基化這一反應,在極性溶劑中,極性較大且為非質子型的溶濟能顯著提高反應的速率;非極性溶劑中,介電常數較小的溶劑能增加反應速率。In view of the poor thermal stability of polyoxymethylene ( pom ) induced by the residual catalyst and unstable end groups formed in the synthesis of pom. the pom was treated by amine, and the effects of the variety of amine compounds, treatment technology and water content on the thermal stability of pom were investigated ; the effect of triethanolamine on the thermal stability of pom was further studied by means of isothermal mass loss, isothermal mass loss rate, and formaldehyde emission amount
摘要針對聚甲醛由於合成中殘留催化劑及不穩定端基導致其熱穩定較差的問題,採用胺對聚甲醛進行處理,並考察了胺種類、胺處理工藝及水用量對聚甲醛熱穩定性能影響;採用等溫熱質量損失率、等溫熱質量損失速率、甲醛釋放量分析等方法對三乙醇胺對pom的熱穩定作用進行了進一步研究。The results show that : - bi is a good burning catalyst of double - base propellant and possesses an excellent ability to reduce pressure exponent
結果表明, 2 , 4 -二羥基苯甲酸鉍是雙基系推進劑良好燃燒催化劑,它能顯著提高了雙基推進劑的燃速,並降低壓強指數。Methods the 54th generation of transformed human embryonic tendon cells and artificial composite materials of carbon fibers ( cf ) and polyglycolic ( pga ) were co - cultured in vitro to construct tet. lt was frozen in liquid nitrogen with four kinds of cpa for 2 months. post - thawed quickly and transplanted into hind limbs of nude mice, and repaired the defects of achilles tendon. after 2, 4, 6, 8, 12 weeks, the morphological, histological, ultrastructure, short tandem repeat loci and immunohistochemistry examination were detected, and biomechanical strength of tet were examined. result tendon cell survived and could secret type i collagen after 12 weeks to transplanted into nude mice. in the group of dmso + raffmose + kh2o4, vacuole in mitochondrion degraded i tendon cell ranged in order, abundant collagen fibers were found and linked each other and the biomechanical strength was increased as time elapsed. c onclusion dmso + raffmose + kh2o4 could protect tet in deep low temperature
組織工程肌腱制備完成後在四種抗凍劑保護下液氮凍存2月;快速復溫后植入裸鼠以修復跟腱缺損, 2 、 4 、 6 、 8 、 12周后取出,觀察形態學、組織學、電鏡和免疫組織化學變化,短串聯重復位點檢測和生物力學變化。結果實驗組組織工程肌腱體內植入12周后仍有肌腱細胞存活並分泌型膠原;隨著時間延長, 10二甲基亞碸( dmso ) +棉子糖( 30mmol l ) + kh _ 2po _ 4 ( 25mmol l )組線粒體空泡減少,肌腱細胞排列整齊,膠原纖維增粗並連接,抗拉強度增高。During the accelerated thermal aging and ultraviolet radiation aging of pmma which is used as the core materials of fiber in pof, it was found that the relative permittivity of pmma decreased significantly to approximately equal to its square refractive index
摘要實驗中觀察到用作塑料光纖纖芯材料的純有機玻璃(聚甲基丙烯酸甲酯)在加速熱老化和紫外老化過程中其相對電容率急劇下降至大約等於其折射率的平方,即有機玻璃由極性聚合物變為非極性聚合物( 「全去偶極子極化」現象) 。The type of photocatalytic reaction was first - degree reaction which was not very typical, and the reaction speed constants could be used to judge the efficiency of photocatalysis. the tio _ ( 2 ) films were prepared on glasses by magnetron sputtering. the influences on the tio _ ( 2 ) films properties of various o _ ( 2 ) partial pressure, various sputtering power, various heat treatment method and n was studied too
加入光催化劑tio _ 2粉末以後,光催化反應速率增幅較大,其過程可以認為是準一級反應,可以用一級反應速率常數來表徵光催化效率,降解甲基橙和甲基藍的反應速率常數分別為0 . 003min ~ ( - 1 )和0 . 35min ~ ( - 1 )左右。The l - n - carbamoylase of arthrobacter bt801, coded by the hyuc gene, is the rate - limiting and the only stereoselective enzyme. hydantoin hydrolase gene ( hyuh ) and n - carbamoylase gene ( hyu c ) were amplified from the plasmid of puc18 - 169 by pcr and, at the same time, activity expression was obtained in e. coli and pichia pastor is gs115 respectively
節桿菌bt801的乙內酰脲水解酶催化乙內酰脲類化合物水解開環, n -氨甲酰基氨基酸水解酶是該菌乙內酰脲酶系中惟一具有立體選擇性的酶,也是整個反應體系的限速酶。A novel anticoagulative biomaterial which was prepared from modified graphite oxide and silicone rubber through solution intercalated reaction was synthesized, the excellent properties of the new type nanocomposites, such as good mechanical strength and blood compatibility, have been characterized by xrd, mechanical properties, adhesion of blood platelet test and the heparin release rate test
摘要利用溶液插層法合成了新型的硅橡膠氧化石墨十八烷基二甲基2 -羥乙基溴化銨肝素納米抗凝血復合膜材料,並通過機械性能測試、 x射線衍射、血小板黏附試驗和肝素擴散速率測定實驗對復合膜材料的力學性能和血液相容性進行了表徵。A. niger m - l which was screened in our laboratory produced a strongly a - transglucosidase. in this paper, studies on the fermentation conditions, purification and characterization of a - transglucosidase and its necessary groups was carried out in this dissertation. the main reports were as following : the fermentation conditions in shaking flasks were investigated by the method of single - factor analysis, the suitable main medium was achieved : which contained 4 % a, 2 % b and 1 % g ; the a. niger m - l was inoculated into 100ml medium in flask, shaking in 33 c at 140r / min for four days, with initial ph6. 5 and 6 % inocula volume ; adding 0. 1 mmol / l methyl a - d - glucopyranoside had inductive effect on enzyme formation, the a - transglucosidase activity amounted to 296. 05u / ml
本研究以黑麴黴m - 1為出發菌株,對其-葡萄糖轉苷酶的產酶影響因素、純化、酶學性質以及必需基團進行系統的研究,結果如下:通過對影響黑麴黴m - 1產-葡萄糖轉苷酶的單因素分析,得液態發酵生產-葡萄糖轉苷酶的最適產酶條件為: 4 a , 2 b和1 g ;在33 ,起始ph值為6 . 5 ,轉速為140r min ,接種量為6 ,裝液量100ml條件下,發酵4 . 0d ,酶活力達296 . 05u ml ,添加0 . 1mmol l的酶作用底物甲基- - d -葡萄糖苷對產酶的誘導作用最大。The objective of this research is to transform the cloned phytase gene into pichia pastoris in order to obtain high - yield phytase - producing strain and to optimize the engineered yeast media recipes for the scale - up production of phytase. main results of this research are as follow : 1, xba i - linized recombinant plasmid ppic9k - phya was transformed into pichia pastoris by gene pulser. 98 positive transformants showing measurable phytase activities were screened on md plates and ypd plates containing g418. they all grew quickly on both md plates and mm plates, which proved their phenotypes of methanol utilization were mut +
主要實驗結查如下:西南農業大學碩士學位論文1 、用乃ai酶切攜帶植酸酶基因表達片段的重組質粒ppicgk夕句) a ,回收dna ,用genepulser電擊轉化畢赤酵母,塗布md平板,又用含不同濃度g418的ypd平板進行抗性篩選,得到98個可檢測到植酸酶活力的陽性轉化子,它們在md 、 mm平板上均表現快速生長,說明其甲醇利用表型是mut干。The program software and design hardware realize the control of the digital governor of n6136 turbocharged diesel and speed adjust system of sla - 02 gas turbine, they can control the rotating speed of the diesel and gas turbine in the forward experiment and can make the main engine changeover processes of the codog physical analog experiment rig possible to be controlled through computer, therefore to set up a solid foundation for the research of possible projects in the changeover processes
通過軟體編程和硬體設計實現了對n6135柴油機的電子調速器和s1a - 02甲燃機的調速系統進行控制,能夠在實驗前和實驗中實時的對柴油機和燃氣輪機的轉速變化進行設定和控制,使codog物理模擬實驗臺主機切換過程實現計算機控制,為實現多方案切換過程研究打下堅實的基礎。Under the irregular wave force, the deviation of the acceleration response of the top deck motion is used as the cost function to optimize the parameters of the control device
在此基礎上,本文針對平臺所處位置的特殊性,提出以平臺甲板加速度響應譜為輸入優化控制裝置的最佳剛度。Nevertheless, the step toward the practical application has not been developed as fast as had been expected. mainly, there are some problems, such as low electrocatalytic activity of the anodic catalyst, the poisoning of the anode catalysts by the adsorbed carbonyl species derived from methanol oxidation, methanol permeation from anode to cathode and demand for methanol - tolerant oxygen reduction catalyst
然而,陽極催化劑的低催化活性、甲醇氧化中間體羰基物對陽極催化劑的毒化、甲醇從陽極向陰極的滲透、以及由甲醇滲透引起的陰極氧還原抗甲醇要求等,致使dmfc的實際應用發展速度一直沒有預期的快。Graft copolymerization of methyl methacrylate onto carboxymethyl chitin was carried out by stirring quickly and no emulsifier, without emulsifier made the products more pure
摘要通過高速攪拌,未使用乳化劑,制備了羧甲基甲殼素和甲基丙烯酸甲酯的接枝共聚物,避免了產物中引入乳化劑雜質。分享友人