過羥基 的英文怎麼說

中文拼音 [guòqiǎngjī]
過羥基 英文
perhydroxyl radical
  • 過 : 過Ⅰ動詞[口語] （超越） go beyond the limit; undue; excessiveⅡ名詞（姓氏） a surname
  • 羥 : 名詞[化學] （羥基） hydroxyl （group）
  1. Ha possesses well biocompatibility, which has been discovered through test and in clinical application. however, the relatively large dissolution or resorption rates of ha will result in the failure of the implants. fluoridated hydroxyapatite ( hfa ) in whose structure f " occupies partially the position of oh " in ha, is expected to be more resistant to body fluid and less soluble than ha and still possess almost the same bioactivity as ha

    生物活性羥基磷灰石薄膜（ ca _ （ 10 ） （ po _ 4 ） _ 6 （ oh ） _ 2 ， ha ）廣泛地應用於鈦合金硬組織種植體表面改性，臨床應用發現ha薄膜具有很好的生物相容性，但是ha薄膜在體內溶解速度有時可能會過快，引起種植體在體內失效，因此， ha薄膜長效性方面有待于提高。
  2. Camptotheca acuminata is a tree unique to china, producing terpenoid indole alkaloid ( tia ) 10 - hydroxycamptothecin ( hcpt ) and camptothecin ( cpt ), which possess strong anti - cancer bioactivity. the dynamics of hcpt and cpt during seed maturation, seed germination, post - germinative development and daily growth were measured by hplc ( high performance liquid chromatography )

    應用高效液相色譜技術對我國特有樹種? ?喜樹（ camptothecaacuminata ）在種子形成、成熟、萌發、幼苗生長及高溫脅迫過程中喜樹堿和10 -羥基喜樹堿的代謝動態進行了詳盡的研究。
  3. By observing the effect of acidity on the uv difference spectra of ehpg or hbed, the spectral characteristics of apoovotransferrin binding to metals and anions at ph 7. 4 show that the reaction of apoovotransferrin with metals is related to deprotonation of the phenolic group of tyrosine of the metal binding sites, while the binding of apoovotransferrin to anions is associated with the protonation of the phenolic group of tyrosine of the anion binding sites

    摘要通過觀察酸度對模擬轉鐵蛋白小分子ehpg和hbed紫外差光譜的影響，結合脫鐵伴清蛋白與金屬離子、陰離子結合的光譜特性，推斷脫鐵伴清蛋白與金屬離子的結合導致金屬離子結合位點處酪氨酸酚羥基的去質子化，而與陰離子的結合導致陰離子結合位點處酪氨酸酚羥基的質子化。
  4. This change makes the processing difficult. it is found that phbv ( poly ( hydroxybutyrate - co - valerate ) will still thermal degrade at the temperature much more lower than the acute thermal degradation temperature

    通過研究發現， phbv （聚羥基丁酸-羥基戊酸酯）在其發生劇烈快速熱降解的溫度以下仍然有熱降解行為的發生。
  5. Aminated and hydroxylated polysulfone membranes were prepared by amination and hydroxylation reaction, respectively. then bovine albumin ( bsa ) - fixed membranes were obtained by crossed - linking albumin into porous membrane with 1, 1 ' - carbonyldiimidazole and bisoxirane reagents, respectively. a mathematical model for facilitated transport in asymmetric membranes with fixed site carriers was derived by assuming an instantaneous, microscopic concentraion fluctuation in the membrane

    以氯甲基聚碸為基材，通過相轉化法制備出具有底部貫通孔的非對稱膜，通過胺化和羥基化反應，分別制得胺化聚碸膜和羥基化聚碸膜，再採用羰基二咪唑和雙環氧烷兩種活化試劑對其進行活化，將牛血清白蛋白固載在膜內，獲得固定白蛋白促進傳遞膜。
  6. Through molecular design, a series of liquid crystalline copolyesters, which possibly possessed the auxetic behavior, were prepared by solution condensation reaction between 2, 5 - bis ( p - alkoxy benzoyloxy ) hydrobenzoquinone, 4, 4 ' - ( decanoxy ) dibenzoyl chloride and 4, 4 ' - dihydroxy - oc, co - diphenoxydecane

    經分子設計，通過2 ， 5 ?二（對烷氧基苯酰氧基）對苯二酚、 4 ， 4 』 ?二羥基? ， ?二苯氧基癸烷和4 ， 4 』 ? （癸二酰氧基）二苯甲酰氯之間的縮合反應合成了一系列具有負泊松比潛能的液晶共聚酯。
  7. A rapid and simple method, stearic acid method was also developed to prepare nanostructured tio2 composites. microstructure of the samples was investigated by xrd, ft - ir, tem and bet specific surface area measurement and the results were compared with those obtained by conventional sol - gel method. it was found that nanocrystalline powders with good dispersity, high crystallinity and large specific surface area were successfully prepared by stearic acid method

    採用硬脂酸法快速、方便地制備了微結構可控的al _ 2o _ 3 、 sno _ 2復合納米tio _ 2 ，並與sol - gel法產物相比較， xrd 、 ft - ir 、 tem結果表明：硬脂酸法制備的復合納米tio _ 2表面貧羥基，具有良好的分散性、更高的比表面積，且可通過改變復合量對摘要博士論文產物晶型和粒徑進行控制。
  8. Based on this point, our aim to obtain the high performance materials should be carried out as well as the er behavior be actualized through the chemistry design. in this paper, 4 supramolecular complexes of - cyclodextrin inhydrosoluble polymer / l - ( 2 - pyridlazo ) - 2 - naphthol, 6 hydrosoluble - cyclodextrin polymer / 3 - hydroxy - 2 - naphthoic acid, 2 - cyclodextrin - starch resins and 6 supramolecular complexes of - cyclodextrin - starch copolymer / substituted salisylic acid and 3 - hydroxy - 2 - naphthoic acid er particles were prepared, respectively. the structure of these particles was characterized by ir, nmr, uv - vis, the fluorescence analysis, element analysis, and etc, respectively

    在本項研究中，分別制備了4種不溶性-環糊精聚合物及其與1 - （ 2 -吡啶偶氮） - 2 -萘酚構築的超分子配合物、 6種水溶性-環糊精聚合物及其與3 -羥基- 2 -萘甲酸的超分子配合物、 2種-環糊精澱粉樹脂及6種-環糊精澱粉共聚物與取代水楊酸、 3 -羥基- 2 -萘甲酸形成的超分子配合物顆粒，通過紅外光譜、熒光分析、元素分析、電子吸收光譜及核磁共振譜等對它們的結構進行了表徵。
  9. The paper also analyzed the crystal defeat formed in the process of growth and put forward to the solution, furthermore, the mechanism of needle - like growth was discussed

    並對晶須生長過程中所形成的各種晶體缺陷進行了分析，提出了解決辦法。同時對羥基磷灰石晶須針狀生長的結晶學和界面動力學機理進行了探討。
  10. But it is mainly dependant on the physical parameters such as volume shrinkage. and when phbv crystallized, the hv content will be segregated, it will be accelerated when crystallization temperature is increased

    在結晶過程中， phbv二元共晶中hv （羥基戊酸）組分會受到排斥，結晶溫度的升高會導致hv組分分凝現象的加劇。
  11. In addition, low ph and low supersaturation were in favor of the needle - like growth of hydroxyapatite whisker

    而低的過飽和度和低的ph值有利於羥基磷灰石晶須的針狀生長。
  12. Both ramie and flax are hydrophilic fibers, their thermal stability is not pretty well

    麻纖維素含有大量羥基，親水性強，熱穩定性較差，加工成型溫度不宜過高。
  13. This dissertation focuses on how to develop a high performance damping mechanism based on multi - energy transitions, which is independent or little dependant with the viscoelasticity of polymer matrix. three sections are mainly included in this dissertation as follows : chlorinated polyethylene ( cpe ) / piezoelectric ceramic ( pzt ) / vapor grown carbon fiber ( vgcf ) composites ; cpe / 2, 2 ' - methylene - bis - ( 4 - methyl - 6 - cyclohexylphenol ) ( zkf ) / vgcf composites ; organic hybrids made from cpe and small molecules cpe / pzt / vgcf composites : the damping composites of multi - energy transitions mechanism were produced by mixing pzt and vgcf into cpe. in this system, the mechanical vibration energy that was transmitted to cpe was found to convert into joule ' s heat through conduction paths between vgcf in the polymer matrix, so the vibration fades away

    本論文主要包括三個方面的研究內容： ?氯化聚乙烯（ cpe ） /壓電陶瓷（ pzt ） /氣相生長碳纖維（ vgcf ）復合材料； ? cpe /雙[ （ 2 -羥基- 3 -環己基- 5 -甲基） -苯基]甲烷（ zkf ） / vgcf復合材料； ? cpe基有機小分子混雜型復合材料cpe / pzt / vgcf減振復合材料：利用壓電和導電填料填充高聚物基體，當復合材料受到機械振動時，通過高聚物基體將機械振動能傳遞到壓電陶瓷粒子上，利用壓電陶瓷的壓電效應，將機械能轉換成電能，則電流在導電粒子產生的迴路中流動，由於導電迴路具有一定的電阻，所以電能又轉變成熱能耗散掉，從而起到減振的目的。
  14. The amount of hydroxyacetic acid, equal to that of sodium chloride, produced from chloroacetice acid hydrolysis is determined by adopting moore method and there fore the ratio of transformation of chloroacetice acid hydrolyzed can be calculated

    摘要氯乙酸水解生產羥基乙酸的工藝過程中產生等物質量的氯化鈉，採用莫爾法測定氯乙酸水解的產物氯化鈉，並計算氯乙酸的水解轉化率，從而選擇和控制水解反應的條件。
  15. Single - walled carbon nanotubes ( swnts ) were opened and oxidized in the concentrated h2so4 / hno3 mixture ( volume ratio : 3 : 1 ), hydroxyl groups could be brought into the swnts after oxidation modification treatment, and the long - chain silane coupling agent was grafted onto swnts via hydroxyl - silanol route

    摘要採用混酸體系（濃硫酸濃硝酸體積比為3 / 1 ）對單壁碳納米管進行了氧化處理，並通過氧化處理后在單壁碳納米管表面生成的羥基官能團與長鏈硅烷偶聯劑進行反應，制備了表面有機修飾的單壁碳納米管。
  16. ( 3 ) volume shrinkage of composite decreases greatly with wpu increasing, even can arrive a negative number, but thermal stability is still good. ( 4 ) toughening mechanism is that : the formation of high molecular linear amino formate construct is the toughening reason ; hydroxyl - terminated pu - prepolymer and pf react to produce chemical bond effect which participate cure ; carboxyl - terminated pu - prepolymer and pf form semi - ipn which make toughened pf occur maximum

    （ 4 ）通過紅外光譜對pf / pu共混物分子結構進行的定性分析、以及掃描電鏡對沖擊斷面形貌進行的分析，可證明聚氨酯預聚物增韌酚醛樹脂的機理是：兩個體系都是由於高分子量的線形氨基甲酸酯結構而增韌；端羥基pu與pf在共固化中產生化學鍵效應，參與pf的固化；而端羧基pu則與pf形成半互穿網路而增韌。
  17. Through strength tests and xrd tests for cemented stone, the paper presents action mechanism of the nanometer materials in the cement hydration and hardening process : pozzolanic effect, filling effect, acceleration action for the cement hydration, and improving action for microstructure. from the four aspects, the modified mechanism of the nanometer silica fume and ordinary silica fume in cement paste are compared. the analysis results show that the particular properties of the nanometer silica fume include particle fineness, crystal structure and surface hydroxy, etc. a serial of laboratory tests are performed to study physical and mechanic properties of the clay with the addition of the nanometer silica fume

    結合水泥石強度試驗和xrd試驗，從火山灰效應、填充效應、水泥水化促進作用和微結構改善作用等方面探討了三種納米礦粉在水泥水化硬化過程中的作用機理；從這四個方面出發，對比分析了納米硅粉和普通硅粉作用機理的異同點，分析表明，納米硅粉的優異特性主要表現為顆粒細度、晶體結構、表面羥基等特性。
  18. The grain size of the porous layer is about 2nm and the thickness lamellar layer is a few tens of nanometer

    由鈦合金基體到羥基磷灰石的過渡層是鈦的氧化層，厚度大約幾個納米。
  19. Hydroxyquinol triacetate was prepared from p - benzoquinone by 1, 4 - addition reaction with acetic anhydride and then 6, 7 - dihydroxy coumarin was synthesized from it by hydrolyze and cyclization in concentrated sulfuric acid. then 6, 7 - dimethoxy coumarin was synthesized by methylating from 6, 7 - dihydroxy coumarin with an overall yield of 74. 4 %. the procedure was practical. its structure was confirmed by ir and 1hnmr

    對苯醌與乙酸酐經1 ， 4 -加成生成1 ， 2 ， 4 -苯三酚三乙酸酯，然後與蘋果酸反應經水解、環合反應得6 ， 7 -二羥基香豆素，再經甲基化得到6 ， 7 -二甲氧基香豆素，總收率為74 . 4 % ，整個過程反應條件溫和，操作方便，適合工業生產的要求，對產品結構進行了ir和1hnmr表徵。
  20. Catalyst for ethanol synthesis. the results show that the reactive metals rh and mn are fixed on the catalyst surface by the interaction with si - oh, which can enhance the stability of highly dispersed metals. rh and mn interact with each other to form the acitve site with high ethanol synthesis activity. the surface si - oh was found to be of significance on the preparation of catalyst with high catalytic activity

    的性質，結果表明，活性金屬銠及錳經浸漬法擔載于載體上后即與表面羥基作用使金屬固定在氧化硅的表面上，保證了高度分散活性金屬的穩定性高度分散中的銠錳相互結合，構成了乙醇合成中的高活性位研究發現表面硅羥基在催化劑制備過程中起著重要作用。
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