羧乙基 的英文怎麼說

中文拼音 [suōyǐjī]
羧乙基 英文
carboxyethyl
  • 羧 : 名詞[化學] （羧基） carboxyl
  1. Using refined cotton, chloroacetic acid, sodium hydroxide and hydrogen peroxide as main feedstock, sodium carboxymethyl cellulose was made by the process of basification, etherification, abstersion and drying

    摘要以精製棉、氯乙酸、氫氧化鈉和過氧化氫為原料，經過堿化、醚化、洗滌、乾燥，制得羧甲基纖維素鈉。
  2. A review on application of monohydrated sodium bisulfate as catalyst in synthesis of ester, such as monocarboxylic esters, dicarboxylic esters, chloroacetates, hydroxycarboxylic esters, aromatic esters and the reusability of sodium bisulfate with

    摘要介紹了一水硫酸氫鈉在催化合成酯（如一元羧酸酯、二元羧酸酯、氯乙酸酯、羥基酸脂、芳香酸酯）中的應用及其重復催化性能。
  3. An one - pot process including direct condensation of ethyl isodehydracetate and hydrocitronellal, followed by decarboxylation, isomerization and isomer resolution, was developed for practical preparation of zr juvenile hormone analogue series with high content of effective component

    以異脫氫乙酸乙酯與甲氧基香茅醛直接縮合為起點，將縮合、脫羧、異構化、 （順、反）異構體拆分等採用多步反應連續一鍋法的操作方法，成功地得到高有效含量的zr型保幼激素類似物。
  4. Yh series inorganic gel can be used alone. or mix use with thickening agent such as cardoxymethyl cellulose, hydroxy ethyl cellulose, cmhpc, will acquire best rheological property. it has been found that this kind of product should avoid mix using with the polyurethane thickening agent

    2 . yh系列水性膨潤土無機凝膠產品可單獨使用或於其它增稠劑如羧甲基纖維素，羧乙基纖維素，甲基纖維素及其改性物，堿溶漲丙烯酸類等配合使用，能夠使體協獲得最佳流變性能。
  5. In order to find replacer for metronidazole and drug selection. some diesters or esters of acids containing nitrogen with metronidazole were designed and synthesized, which have difference in water - solubility. metronidazole was reacted with the corresponding amino or imino multi - carboxylic acid compounds in the presence of acetic anhydride or thionyl chloride or dcc. the intermediate of nitrilotriacetic acid with ac

    為尋找羥乙基甲硝唑的替代物，分別採用酸酐法酰氯法或dcc法，將氨基羧酸與羥乙基甲硝唑反應，得到5個親水性不同的單酯或二酯，用ms譜確證了次氨基三乙酸與乙酸酐反應的中間物，並對得到的酯的
  6. Abstract : methanesulfonic acid method was used to prepare five acylated chitins. except heptanoyl chitin, four of them, i. e. acetyl chitin, propionyl chitin, butyryl chitin and hexanoyl chitin, had high degree of substitution ( from 1. 5 to 2. 0 ) and exhibited lyotropic liquid crystalline behavior and cholesteric phase. as the length of the side chain increased the critical concentration ( w / w ) somewhat increased from 0. 21 to 0. 26 because the chain rigidity dropped. the critical concentration values of all the four derivatives were much higher than that of chitin ( 0. 12 ) due to the decrease of intramolecular hydrogen bonds. the four acylated chitin can form typical banded texture after being sheared. there minimum concentrations to form banded texture of them were evidently different, varied from 0. 25 ( for acetyl chitin ) to 0. 37 ( for hexanoyl chitin ). these results further indicated that liquid crystallinity decreased while the length of flexible side substituents increased

    文摘:四種羧酰化甲殼素即乙酰化、丙酰化、丁酰化和己酰化甲殼素在二氯乙酸溶液中均呈現膽甾型溶致液晶相.臨界濃度隨側基長度增加而略有增加，衍生物的臨界濃度明顯都比原甲殼素高許多，這些規律都可以用鏈剛性的變化來解釋.四種羧酰化甲殼素在剪切時均能形成條帶織構，而且能形成條帶織構的最低濃度有明顯差別，隨側基長度增加而提高，進一步表明側基較長，液晶性減少
  7. Acetyl coa plays a key role in metabolism, being a precursor of the krebs cycle and glyoxylate cycle, and the starting point for synthesis of fatty acids, terpenes, and some amino acids

    它在新陳代謝的過程中扮演非常重要的角色，是三羧酸循環和乙醛酸循環的前體物質，而且還是合成脂肪酸，萜類以及一些氨基酸的起始。
  8. Abstract : researches on unformaldehyde unironing finishing are summarized in this paper. functions and deficiencies of glyoralamido, water soluble heat reactive polyure thane, bishydroxyethyl - sulfoue, natural high precision chitosan, reactive organosilicon, amyloidosis epoxide, multiple carboxyl acid compound are also analyzed and compared

    文摘:綜述了無甲醛免燙整理方面的研究，分析比較了乙二醛-酰胺類整理劑、水溶熱反應性聚氨酯、雙羥乙基碸、天然高聚物殼聚糖、反應性的有機硅、澱粉改性物、環氧類整理劑、多羧酸化合物等無甲醛抗皺整理劑的功能以及各種整理劑存在的不足
  9. The association of gene polymorphisms of mgp and alad with lead blood level in children

    羧基谷氨酸蛋白和氨基乙酰丙酸脫水酶基因多態性與兒童血鉛的關系
  10. - acetolactate decarboxylase are widely found among bacterial strains but not in other groups of organisms. the enzyme has been demonstrated to be effective for removal of acetolactate and widely used in beer product. in this paper, - acetolactate decarboxylase from bacillus subtilis was purifed to homogeneity from cell extract by ammonium sulfate - fractionation, heat treatment, deae - sepharose fast flow column chromatography

    本文對來源於枯草芽孢桿菌（ bacillussubtilis ） 3226 - 5的-乙酰乳酸脫羧酶經硫酸銨分級沉澱、熱處理、 deae - sepharosefastflow離子交換柱層析等分離純化步驟，得到sds - paeg電泳純，通過n末端氨基酸序列分析驗證酶蛋白的純度。
  11. The synthesis technology of various liquid rubbers with different active group terminated, such as hydroxyl - terminated, carboxyl - terminated, isocyanate - terminated, ami - no - terminated, mercaptan - terminated and various main chains like polybutadiene, polyurethane, polystyrene were reviewed with 23 references

    摘要綜述了端羥基、端羧基、端異氰酸酯基、端氨基、端巰基等活性端基，以及聚丁二烯、聚氨酯、聚苯乙烯等不同主鏈結構的液體橡膠的合成技術。
  12. Sailuluo, carboxyl methyl cellulose that, nylon series products lu : yisuan, surface active agent, bringing alternative amides size, polyimide, plastics processing. mode of operation : manufacturing

    賽璐珞，羧甲基纖維素納，尼龍系列產品，氯乙酸，表面活性劑，聚碸酰胺漿液，聚酰亞胺，塑料加工。經營方式：製造。
  13. Abstract : the title compound useful as insecticide, is synthesized from methyl 3 - ( 2 :, 2, 2trichloroethyl ) - 2, 2 - dimethylcyclopropanecarboxylate. by uniform design, the experimental condition is optimized. mathematical model is established and discussed

    文摘:從3 - （ 2 ， 2 ， 2 -三氯乙基） - 2 ， 2 -二甲基環丙烷羧酸甲酯出發制備二氯菊酸甲酯。應用均勻設計選擇反應優化條件，並對實驗數據建立數學模型，同時對模型進行分析。
  14. On the basis of discussing the developmellt of antistatic and amibacterial polyamide generally in past decades, the anistatic and anibacterial methods and technologies of synthetic fibers are suxnmarzed emphasisly in this paper a series of pcaneg block copolymers are synthesized by two steps

    採用先合成雙端羧基的遙爪預聚己內酰胺，再與聚乙二醇進行酯化、縮聚的方法，合成了pca peg （聚己內酰胺聚乙二醇）嵌段共聚物。
  15. The dispersity and stability of the graphite aqueous suspensions was investigated with centrifugation, the violet visible spectrophotometer, the laser particle size analyzer and scanning electron microscopy ( sem ). the following aspects of the production technique were carefully studied : 1. the effects of surfactants, poly ( vinyl alcohol ) ( pva ), poly ( vinyl pyrrolidone ) ( pvp ), sodium alginate ( sa - na ) and poly ( sodium acrylate ) ( pa - na ) on the suspension stability of graphite were investigated

    本研究的主要內容有以下三個方面: 1 、研究了陰離子表面活性劑、非離子表面活性劑、聚乙烯醇（ pva ） 、聚乙烯基吡咯烷酮（ pvp ） 、海藻酸鈉（ sa - na ） 、聚丙烯酸鈉（ pa - na ）對石墨在水中分散性和穩定性的影響; 2 、研究了分散方法、分散介質、 ph值及羧甲基纖維素鈉（ cmc ）含量對石墨在水中分散性和穩定性的影響; 3 、研究了聚乙烯醇（ pva ） 、聚乙烯基吡咯烷酮（ pvp ） 、海藻酸鈉（ sa - na ） 、聚丙烯酸鈉（ pa - na ）四種助分散劑與羧甲基纖維素鈉（ cmc ）復配對石墨在水中分散性和穩定性的影響。
  16. Carboxyethyl ( phenyl ) phosphinic acid with the yield of 69. 2 % was synthesized from phosphorous trichloride, benzene, sodium chloride and acrylic acid

    以三氯化磷、苯、三氯化鋁、氯化鈉、丙烯酸為原料合成了阻燃劑2 -羧乙基苯基次磷酸，收率69 . 2 % 。
  17. Chitin possesses special character and usage after modification such as modified as sulphonation, carboxymethylation, deacetylation etc. the derivatives are widely used in the fields of chemical industry, medicine, food, cosmetics, printing and dyeing, papermaking, environmental protection and agriculture etc. chitin is the ba

    甲殼素經過化學修飾和改性，如磺化羧甲基化脫乙酰化等可獲得具有特殊性質和用途的甲殼質系列衍生物，在化工醫藥食品化妝品印染造紙環保農業等領域具有廣泛用途。
  18. The genes encoding pyruvate decarboxylase ( pdc ) and alcohol dehydrogenase ii ( adh ii ) were amplified from total dna of zymomonas mobilis by pcr. the genes of adhb andpdc were inserted into expression vector pse380 and then transformed into e. coli dh5a. the recombinant strains were induced to express adh ii and pdc with iptg

    本論文以zymomonasmobilisdna為模板， pcr擴增zymomonasmobilis中的乙醇脫氫酶基因（ adhb ）和丙酮酸脫羧酶基因（ pdc ） ，分別構建表達質粒pse - adhb和pse - pdc並在大腸桿菌dh5中表達。
  19. Synthesis of some esters of acids containing nitrogen with metronidazole

    含氮羧酸的羥乙基甲硝唑酯的合成
  20. The influence of retarder on the seaing time and ultimate strength of gypsum plaster was investigated in this paper. the experimental results indicate that the effect of single retarder, such as citric acid, is inferior to that of composite retarder which was made of blending citric acid with a few portland cement ( about 0. 5 ?, by weight ). the effect of different water - retention agents, such as polyvinyl alcohol ( pva ), carboxymethyl cellulose ( cmc ), and na - bentonite, etc., was also studied, and the results demonstrate that by means of adding organic and inorganic water - retention agent simultaneously the water - retention of plastering slurry can obviously be improved. the optimal mix proportion of gypsum plaster suitable to finish coat of walls and ceilings of buildings has been got by use of factorial experiment with orthogonal array accounting for interactions between factors each other

    研究了分別以檸檬酸、檸檬酸與普通硅酸鹽水泥復合物作緩凝劑，調節粉刷石膏的凝結時間，並對比2種緩凝體系對石膏抗折、抗壓強度的影響.比較不同保水劑（聚乙烯醇、羧甲基纖維素）以及相同量的保水劑在不同工藝流程下保水效果上的區別.探索了有機保水劑和無機保水劑對粉刷石膏的保水性的影響.結果表明，檸檬酸與普通硅酸鹽水泥的復合緩凝劑比單純的檸檬酸更能有效地延緩建築石膏的凝結，同時建築石膏的抗折、抗壓強度降低幅度減小
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