mechanism of a reaction 中文意思是什麼

mechanism of a reaction 解釋
反應機制
  • mechanism : n 1 （機械）結構；機械裝置[作用]；（故事的）結構。2 【哲學】機械論 （opp vitalism）。 3 【文藝】...
  • of : OF ＝Old French 古法語。
  • a : an 用在以母音音素開始的詞前〉 indefinite art 1 〈普通可數名詞第一次提到時，冠以不定冠詞主要表示類...
  • reaction : n 1 反作用，反應；反沖；反動力。2 【政治學】反動，倒退；復古（運動）。3 【化學】反應，【物理學】...
  1. This article mainly focus on the selection and amelioration of catalyst. we think the mechanism of depolymerization reaction of the poly lactic acid ( oligomer ) is a intramolecular ester exchange reaction

    本文從改善合成反應的催化條件入手，通過對丙交酯合成反應的機理分析，認為整個反應是一個酯化和分子內的酯交換的反應過程。
  2. And it also shows some microscope dynamics mechanism of the system. the present results also demonstrate that the svrt model for atom - polyatom reaction provides a practical and accurate approach for studying chemical reactions involving polyatomic molecule

    同時也說明在研究多原子參與的化學反應中， svrt模型是一種實際可行的方法，值得應用到更一般的多原子分子反應體系中去。
  3. In this paper, high concentration vanadium electrolyte has been prepared by electrolysis, graphite and graphite felt electrode also have been made, moreover, the electeodes have been activated, and based it, a lab - level vanadium battery has been manufactured. cyclic voltammetry, current step and invariable current charge / discharge method have been used to study the reactive mechanism of electrolysis, of vanadium electrode reaction and of electrode activation, also to investigate maiden charge process and electricity performance of vanadium battery. the influence of electrode activation and trace stibium ion, indium ion added into vanadium electrolyte has been discussed

    利用循環伏安法、恆電流階躍法、恆電流充放電循環等電化學方法，探討了電解法制備釩液流電解質的反應機理，考察了釩的電極反應、電極表面活化處理對釩的電極反應的影響，結合電極反應分析了活化的機理；還考察了釩電池初次充電活化過程及恆流充/放電循環的電性能；並且考察了添加銻離子、銦離子對釩電池電性能特別是析氫行為的影響。
  4. With the rapid development of molecular biology, the researchers of different scientific background are provided with a good opportunity to enter the field. people can resolve some important difficult problems with all kinds of research methods and knowledge in their fields. it is chemists " tribute that they design and synthesize effective nucleic acid cleavage reagents and clarify the reaction mechanism of complexes and dna, which makes it possible to search effective remedial reagents and structural probes by molecular design

    分子生物學的迅猛發展為不同科學背景的研究者涉足該領域提供了良好的機遇，人們可以利用各自領域的研究方法和知識來攻克生物學中的一些重要難題，化學家所能做的貢獻就是設計和合成一些特異識別和高效切割的核酸斷裂試劑，並闡明其作用機理，從而使通過分子設計尋找有效的治療試劑和結構探針成為可能。
  5. The effects of the fabrication conditions on the crystal structure, grain size, micromorphology and electrochemical performance of these materials have been studied in depth. the reaction mechanism of the low - heating solid - state reaction method has also been investigated. in addition, a novel electrochemical method ( rpg method ) based on the concept of " ratio of potentio - galvano - charge capacity " has been for the first time developed to determine the diffusion coefficient of lithium - ion within insertion - host materials on the basis of the spherical diffusion model

    本論文較系統地考察了低熱固相反應法合成鋰離子電池正極材料的可行性問題，研究了工藝條件對材料的晶體結構、晶粒尺寸、微觀形貌及電化學性能等的影響，探討了低熱固相反應的機理，並通過引進「恆壓-恆流充電容量比」的概念，給出了一種測定鋰離子嵌入脫出固相擴散系數的新方法。
  6. Using v2 & 5 and alkylamines ( cs - cao alkyl chain ) as precursor, vanadium oxide nanotubes which have an unique structure that alkylamines intercalate into layers of tubes wall affecting the layer spacing were prepared. their layers spacing ranges from 1. 25 nm to 3. 82 nm according to the length of alkyl chain. moreover, the growth mechanism of vanadium oxide nanotubes have been investigated and 3 - 2 - id model was established to interpret the vanadium oxide nanotubes growth process. potassium niobate is a functional materials which can be used as photochemical catalysts. lt is well known that the catalytic activites are affected greatly by the surface area of catalyst particles on which the reaction take place

    以系列烷基胺和五氧化二釩為原材料，通過簡單的水熱反應合成出了氧化釩納米管，這種納米管結構獨特，烷基胺作為模板劑內嵌入納米管管壁層間，成為支持納米管的骨架，並影響層間距大小，納米管管壁層間距隨著烷基胺碳鏈長度的不同在很大范圍內變化，通過採用不同碳鏈長度的烷基胺（ c _ nh _ （ 2n + 1 ） nh _ 23 n 20 ）作為模板，來控制氧化釩納米管的層間距，層間距可調控范圍從1 . 25nm到3 . 82nm 。
  7. Reaction mechanism and characterization of a super absorbent resin of cellulose am aa

    接枝高吸水樹脂的反應機理及表徵
  8. Because of the influences of the turbidity, ph of raw water, current, temperature and the pollutions of raw water, the process of coagulant dosage is a very complex reaction. to find out the automation of coagulant dosage and reduce the cost of the coagulant, many domestic and international scientific research organizations make research into the theory and mechanism of automation of coagulant dosage, such as the streaming current control method ( scd ), the emulation experimenting method in spot, mathematics model, flocculation control device ( fcd )

    由於受到原水濁度、 ph值、配水流量、原水溫度和其他水質污染的影響，投藥絮凝過程是一個非常復雜的反應過程，為實現投藥系統的自動化和降低混凝劑耗率，國內外相當多的科研機構和院校在進行投藥機理和自動化處理的研究，主要有流動電流儀檢測法（ scd ） 、現場模擬實驗法、數學模型、顯示絮凝控製法（ fcd法）等自動投藥方式的研究和實驗。
  9. The organic chemistry is a subject of study the structures, properties, synthesis, reaction the mechanism of organic compound and the changes of carbon compounds of mutually

    有機化學是研究有機化合物的結構、性質、合成、反應機理和碳化合物間相互轉變的一門學科。
  10. Till now, a protein with 22kda in tartary buckwheat ( tb22kda ) has been identified as the major allergen, so further study of the corresponding epitope in virtue of immunological and molecular genetic methods will be helpful in understanding the molecular mechanism of allergenic reaction and finding proper ways of resisting irritability

    Tb22kda蛋白是苦蕎中的主要過敏蛋白，對此蛋白中抗原決定簇免疫學和分子遺傳學的深入研究，將有助於了解過敏反應機制並設計抑制蕎麥過敏蛋白的表達或使患者脫敏的方法。
  11. Western - blotting result demostrated rhpf4 had specific reaction with rabbit anti - hpf4 antibody. our system improve the expression level of r hpf4 by 80 fold compared with pt7 - 7 - r hpf4. after purified and renatured, r hpf4 prepared by our methods has bioactivity like wide hpf4. our study establish a stable base for further reseach of the h pf4 and provide a theoretics gist for modulative mechanism of eukaryotic protein expression in prokaryotic cells

    我們構建的rhpn原核高效表達系統經m page及凝膠密度掃描分析結果表明， rhpf4表達量占菌體總蛋白量的25 30 ，較原表達克隆pt7 7 rhpf4提高了近80倍，經快速高效的包涵體分高純化工藝和復性工藝， rhpf4具有野生蛋白活性。
  12. All vanadium redox flow battery is a new - style and environmentally friendly energy storage battery that has many characteristics such as instant recharge by replacing the spent electrolytes, discharged at large current density, really fully discharged ( 100 % ), increasing storage capacity easily, a theoretically unlimited life, sim - ple operation and maintenance. therefore, it is undergoing a exciting development and commercialization. however, there are still some questions to be solved during its commercialization, such as how to prepare highpurity vanadium electrolyte, to enhance its energy density and efficiency, to improve its charge / discharge performance. so it is very important for improving the perfoemance of vanadium redox flow battery and its commercialization to select adaptive electrode materials, to investigate the mechanism of the electrode reaction and to select some additives

    如何制備高純度的釩液流電解質、進一步提高釩電池的能量密度和效率，提高其充放電性能，是釩電池實用化過程中需要解決的問題。因此，選擇合適的電極材料，進一步探討釩離子的電極反應機理，研究釩電池在充放電過程的變化，適當選擇並探討添加劑對釩電池電行為和性能的影響，對進一步改善和提高釩電池的電性能以及釩電池的實用化具有重要的理論意義和實用價值。
  13. In combination with the characteristics of the molecular structure of carbazole, a possible genetic mechanism of dmcs is proposed : l, x - dmcs may be derived from 1 - methylcarbazole by methylation. the methylation at the cyclocarbon positions 3 and 6, with equal chemical reaction activity, would result in equal products ; at the same time, competitive methylations would occur between cyclocarbon positions 3, 6 vs 4, 5 ; different conditions of reactions will result in different preferences of 1, 3 - + 1, 6 - dmc or 1, 4 - + 1, 5 - dmc

    結合咔唑分子結構分析，首次提出二甲基咔唑的一種甲基化作用形成機理： 1 ， x -二甲基咔唑由1 -甲基咔唑經甲基化作用演化形成；等化學反應活性的環碳3與6位上的甲基化作用理應獲得相等的產物。
  14. The mechanism of hydrothermal process has also been studied. under the hydrothermal conditions, a small quantity of cu2 + in solutions were carried to the copper lattice due to the diffusion and convection, then the cu2 + move to the positions of lattice defect. the crystallization reaction happened and copper powders got a good crystallinity and an excellent antioxidation

    在穩定的水熱條件下，由於擴散、對流或強迫流動引起少部分溶解在溶液中的銅離子向銅晶體表面附近的區域輸運，在晶面某一位置上被吸附，並通過表面擴散，順著臺階運動到扭折位置，發生結晶反應。
  15. This paper has reviewed the resources of ceo2 in our country, the markets and the condition of application. the advantages and drawbacks of the important preparation methods were reviewed. it puts emphasis on the reaction mechanism of precipitation method to nanoparticals and analyzes redox potential between ce3 + and ce4 +, puts forward a new technics named " a two - stage precipitation process " to succeed in obtaining nanocrystalline powers of cerium oxide

    本文簡要介紹了我國ceo _ 2的資源和市場以及國內外納米ceo _ 2的應用現狀：分析對比了納米ceo _ 2制備研究現狀；重點討論了沉澱法制備納米粉體的理論基礎：結合鈰（ ）離子、鈰（ ）離子的氧化?還原電位分析，提出以兩步沉澱法來制備納米二氧化鈰。
  16. The forming - nucleus drive power could form numerous little crystal nucleus under natural melting temperature. the formation of tic particles in the melt could be divided into two phases which was forming - nucleus and growth. the forming mechanism of tic was : melting ti first surrounded c, then ti melting in the alloy and c formed a complicated reaction mesosphere on the carbon surface

    根據熱力學及動力學分析，認為在碳顆粒界面處tic的形核率很高，形核驅動力足以在正常的熔煉溫度下形成眾多的小晶核；熔體中tic顆粒的合成可分為形核與長大兩個階段，其形核機制為：首先活性ti原子包圍c ，溶入合金中的ti與c在碳表面形成一復雜反應中間層，隨著反應進行， ti和c顆粒不斷減少，生成的tic不斷彌散分佈於熔體中；其長大過程伴隨著tic顆粒的相互堆砌、聚集和形態規則化。
  17. The study on the function and mechanism of phrip1 is important for clarifying how the cell plate and cell wall form in plants. in this study, full length of phrip1 is amplified by pcr and ligated into pks plasmid, then the bait plasmid, peg202 - phrip1, is constructed. the inseret gene are sure to be translated into the right fusion protein through its sequence. in the yeast two - hybrid system, the bait plasmid ( peg202 - phrip1 ) and a reporter plasmid ( psh18 - 34 ) are introduced into the yeast ( egy48 ) by co - transformation. then cdna library ( which is in pjg4 - 5 ) is screened and two genes are obtained. the two insert gene fragments are sequenced. one of them is plastocyanin, the other is putative photosystem i reaction center subunit ii precursor, both of them are the necessary components of photosynthetic chain

    成膜素相關蛋白1 （ phrip1 ）是一個含608個氨基酸的蛋白質，它對于植物胞質分裂中細胞板的形成起到了十分重要的作用。研究phrip1的功能和機制，對在分子水平上闡明植物細胞板以及細胞壁形成的機理具有重大的生物學意義。在本實驗中，根據phrip1的序列設計引物對其進行pcr擴增，得到該基因后將其連接到了pks質粒上，並進一步構建成了誘餌質粒peg202 - phrip1 。
  18. The phase composition, microstructure and the interface characteristic were all analyzed through xrd, sem, optical microscope, eds, etc. the results are listed as follows : the growth mechanism of al - 5zn - 10si alloy is that molten aluminum keep a continuous oxidation and growth in the way of cell - shape through the micro - channels which transfer the molten aluminum to the reaction front

    採用xrd 、 sem和光學顯微鏡以及能譜分析法，研究分析了al _ 2o _ 3 sic ni al - si合金多相陶瓷基復合材料的相組成及其界面特徵。研究發現： al - 5zn - 10si合金原位氧化生長是合金熔體通過氧化體中的微觀通道傳輸到氧化生長體前沿繼續氧化，並以胞狀形式向前生長。
  19. It is the first time to study the mechanism of interfacial reaction in sic / ti composites by quantum chemistry computation methods. a suitable method to calculate titanium carbide and silicide was found and the thermodynamic and dynamic data involved in interfacial reaction of sic / ti composites have been obtained

    首次將量子化學計算理論運用於金屬基復合材料界面反應的研究中，運用gaussian98量子化學計算程序，找到了適合於研究過渡族金屬ti的碳化物和硅化物的計算方法，獲得了sic ti基復合材料界面反應的熱力學和動力學數據。
  20. Abstract : benzotriazole is a good corrosion preventive compound that can reacts with aldehyde and alcohol. the addition reaction is used to synthesize eight alkoxyalkyl benzotriazoles by benzotriazole, propionaldehyde and methanol, ethanol, propanol, iso - propyl alcohol, n - but anol, iso - butanol, sec - butanol, tert - butanol. their structures were confirmed by elemental analysis, ir and 1hnmr. the mechanism of addition reaction was discussed

    文摘:利用苯駢三氮唑、丙醛分別和甲醇、乙醇、丙醇- 1 、丙醇- 2 、丁醇- 1 、丁醇- 2 、 2 -甲基丙醇- 1 、 2 -甲基丁醇- 2反應合成了八種烷氧基烷基苯駢三氮唑，通過元素分析、 ir 、 1hnmr對上述化合物的結構進行了測定，並討論了這類加成反應的歷程。
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