烷酸 的英文怎麼說
中文拼音 [wánsuān]-
Through orthogonal design experiments on synthesizing p - tert - butylcstechol from hydroquinone and isobutylene by using a new catalyst prepared from cobalt naphthenate and zinc chloride, the optimum technology parameters were obtained : mole ratio was 1 : 1. 15 for hydroquinone and isobutylene, mass ratio was 100 : 20 for hydroquinone and catalyst, and the reaction temperature was 100 5
摘要用環烷酸鈷與氯化鋅復配的新型催化劑,以鄰苯二酚、異丁烯為原料合成對叔丁基鄰苯二酚,通過正交實驗確定的較佳工藝參數為:鄰苯二酚:異丁烯(物質的量比) 1 : 1 . 15 ,鄰苯二酚:催化劑(質量比) 100 : 20 ,烷基化反應溫度100 5 。The methods - three dimension fabric - enforced laminates, and sparse fabric - enforced laminates, layer - enforced laminates ? to enhance the interlaminar toughness of fabric - reinforced laminates were discussed in this paper. the stitching method to enhance interlaminar toughness of stitched - laminates was mainly discussed in this paper based on our research and experiment. the middle - alkali glass fabric used as enforced - material with thickness of 0. 2mm, 3 section 600 deniner kevlar yarn is used as stitching thread in this research, which improved lock stitching way and different kinds of stitching mode were adopted
以提高層合板復合材料的層間斷裂韌性(能量釋放率)為目標,採用中堿玻璃布為增強材料,對疊層后的玻璃布,採用凱芙拉縫合線、改進的鎖型縫合方法、不同的縫合工藝進行了縫合;基體採用的是不飽和樹脂,固化劑為過氧化甲乙酮,促進劑為環烷酸鈷液;在室溫下採用真空輔助rtm ( resigntransfermolding )成型固化方法,製作了不同縫合工藝的玻璃布增強復合材料層合板。Specification for zinc naphthenate and zinc naphthenate concentrates
環烷酸鋅及環烷酸鋅濃縮物規范Aminocephalosporanic acid 7 - aca
氨基頭孢菌烷酸Nonadecanoic acid methylester
十九烷酸甲酯Aminopenicillanic acid 6 - apa
氨基青黴烷酸The synthetic process was improved by using sodium formate instead of sodium 2 - ethylhexanoate and yield of the modified method was also raised to 76 % with low consumption of 6 - apa comparing with the 70 % in the literature
該工藝路線使用甲酸鈉代替異辛酸鈉,減少了關鍵中間體6 -氨基青黴烷酸( 6 - apa )的耗用量,收率從文獻的70 %提高到76 % 。S. fredii can synthesize phb in culture medium of glucose and change its metabolic pathway by intimidation pressure when alkanoates were added int o culture medium. according to this theory, metabolic pathway of p ( hb - hh ) was induced
根據費氏中華根瘤菌在以葡萄糖為碳源時合成phb ,而在烷酸鹽提供一定環境脅迫壓條件下,改變了代謝方向,我們推導出該菌合成phas的代謝途徑。The seed was also rich in total sugar, in crude protein, in amino acid and inorganic elements. in addition, the higher antimicrobial activity of alcohol extracts from the seed and pentadecanoic acid containing 18. 99 % in the unripe seed oils were first found
種子的總糖、粗蛋白、氨基酸、礦質元素含量也較豐富。首次發現種子醇提物有較強的抗菌活性和青果種子油有相對含量高達18 . 99的十五碳烷酸。It has not only the characteristic of petrochemical plastics but also has the biodegradability, biocompability and degradable product without toxin. these biologic polymers are new kinds of environment - friendly material that provide a new way to resolve white pollution and can be used as scaffold material in medical tissue engineering
多聚羥基烷酸是一類由生物合成的結構簡單的高分子聚合物,它不僅具有石化塑料的特性,而且具有生物可降解性、生物相容性、降解產物無毒性的特性,是一種環境友好型的生物材料。Poly - 3 - hydroxybutyrate ( phb ) and other related polyhydroxyalkanoates ( phas ) are biodegradable thermoplastic polyesters stored in numerous bacteria as carbon and energy reserves and now have been regarded as ideal alternatives to traditional petroleum - derived plastics, which cause severe environmental and waste management problems
聚3 -羥基丁酸酯( poly - 3 - hydroxybutyrate , phb )及其它類型的聚3 -羥基鏈烷酸酯同屬于聚酯類物質,是自然界中多種細菌的碳源及能源儲備物。Tem image showed that nanorods form after the modification, which were 50 ~ 100nm in width and several microns in length. the rodlike nanostructures may be caused by the special packing of these ots - coated nanotubes through hydrophobic interaction between the long fatty chains. then the lb technique was attempted to assemble the nanorods
使用lb技術對修飾后得到的納米棒進行了組裝,使用原子力顯微鏡觀察形貌,結果表明納米棒排列混亂無序且有聚集現象;經二十二烷酸( ba )作為分散劑混合做膜后,納米棒的分散性良好。Specification for copper naphthenate and copper naphthenate concentrates
環烷酸銅及環烷酸銅濃縮物規范Producer of precipitated and activated calcium carbonate, for use as additives in various materials and products
-生產環烷酸環烷酸鹽異辛酸鹽和稀土催干劑。Research results in this field have been reported but there are still many questions that are not completely understood
環烷酸腐蝕的規律比較復雜,迄今對很多問題還不甚了解。Spectrophotometric determination of cobalt in crude oil and cobalt naphthenate with 2 - 5 - bromo - 2 - pyridylazo - 5 - diethylaminophenol
二乙氨基苯酚分光光度法測定原油及環烷酸鈷中鈷Manufacturer in china of 1 - aminoanthraquinone and 1 - nitroanthraquinone, used primarily as dye intermediates. also offers a pulp digestion product, magnesium sulfate, and potassium permanganate
-生產鈷鹽粘合劑,鎳鐵,不銹鋼帶,電解鎳,環烷酸鈷硬脂酸鈷硼酰化鈷癸酸鈷,硅鐵鉬鐵鈦鐵。Abstract : the synthetic method of pentaerythrito naphthenate by n on - acid catalyst sno was studied. the influences of mole ratio of ethanediol and naphthenic acid, a mount of catalyst, reation time, reation temperature etc. on est erification were discussed and the suitable processing conditions were found
文摘:介紹了用氧化亞錫非酸性催化劑催化合成環烷酸季戊四醇脂的方法,通過討論醇酸摩爾比、催化劑用量、反應時間、反應溫度等因素對該脂化反應的影響,從而確定了適宜的工藝條件After the organic modification of montmorillonite, the interplanar spacing of montmorillonite increased from 1. 21nm to 1. 78nm. up ( unsaturated polyester ) mmt ( montmorillonite ) nanocomposites were prepared by dispersing organically modified montmorillonite in prepromoted up resin and subsequently cross - linked using methyl ethyl ketone peroxide catalyst at several different clay concentrations
將有機蒙脫土分散到不飽和聚酯中,加入引發劑(過氧化甲乙酮) 、促進劑(環烷酸鈷) ,使不飽和聚酯交聯制得納米復合材料。Methods of analysis of wood preservatives and treated timber - determination of zinc naphthenate in preservative solutions and treated timber
木材防腐劑與防腐處理後分析方法.第5部分:防腐劑溶液及防腐處理后木材環烷酸鋅的測定分享友人