醚化度 的英文怎麼說

中文拼音 [míhuàdù]
醚化度 英文
degree of etherification
  • 醚 : 名詞[化學] （有機化合物的一類） ether
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  1. In this paper, glycidyl ether, which was high epoxide value and low viscosity, was synthesized from 2 - trimethylene glycol, epichlorohydrin and the normal butyl alcohol by phase transfer catalyst based on the orthogonal experiment design

    摘要採用1 ， 2 -丙二醇、正丁醇和環氧氯丙烷為原料，在相轉移催化劑的作用下反應，通過正交實驗合成了的高環氧值、低粘度的混合醇縮水甘油醚。
  2. In trpsin tolerance assay. this virus could resist to 1 % trpsis at 37 in an hour. in acid tolerance assay, this virus was resistant to ph3. 0 and ph5. 0 at 37 in 2 hours, and the average infection litre of the virus decreased little. in heat assay, at 50, the virus was processed from 5 minutes to 150 minutes and at each condition the viral virulence reduced to some certain degree. among these conditions, when at 50 in 30 minutes. the average infection litre of this virus decreased over 2 tilre. and when al 50 in an hour, cpe of ihis virus disappeared. when time was set for an hour. but with processed in different temperature as 50 60 70, 80, the virus losl the multiplication capacity complelely. in biological assay, we selected different cell lines to cultivate this virus by laking advantage of possesional cells at that time in our laboratory. then we found that fcwf cell line was the most sensitive to dxmv and mdck was the second. with f81 cell line, after passaged for 12 times continuously with low concentration of fcs. the virus could produce cpe. however, with vero cell line. the virus could not procuce any cpe after many passages. the hemagglutination and lumadsorption reaction test proved that this virus had no any reaction to erythrocyte of pig, fowl and cavy. by neutrolizaion assay, dxmv could be identified as a kind of ccv

    理化學研究表明，該病毒為rna病毒，對氯仿、乙醚敏感；胰酶試驗中，經37 、 1小時處理的病毒，仍然能夠在貓源細胞fcwf細胞上生長，並且毒力基本保持不變；耐酸性試驗中，病毒分別在ph5 . 0和ph3 . 0經37作用2小時，毒力僅下降一個滴度；耐熱性試驗中，該病毒在恆定溫度50 ，設定不同時間，從5分鐘到150分鐘，毒力均有不同程度下降，其中， 50作用30分鐘，病毒平均滴度下降2個單位； 50 ， 60分鐘， cpe消失；恆定時間1小時，設定不同溫度（ 50 - 60 - 70 - 80 ） ，病毒在細胞上完全喪失增殖能力， cpe消失。生物學試驗，利用實驗室現有條件，選擇不同的細胞系對該病毒進行培養，發現該病毒對貓源細胞fcwf最敏感； mdck細胞次之； f81細胞經多次傳代，亦可出現cpe ；而vero細胞則不敏感。血凝試驗表明，該病毒對豬、雞、人及豚鼠的紅細胞均無血凝性。
  3. 5386 - 60 is a partially methanol etherified amino resin. it has rapid curing and lower baking temperature

    5386 - 60樹脂是一種部分甲醚化的氨基樹脂，固化反應快烘烤溫度低。
  4. The title mid - etherified melamine - formaldehyde resin was synthesized in two steps and used as a curing agent of water borne paint, the best reaction conditions were investigsted, in ferms of the influence of temperature, time and catalyst

    摘要採用兩步法合成了用於塗料交聯劑的甲醚化三聚氰胺樹酯，考察了溫度、時間、催化利等因素對交聯劑中不同組分含量的影響。
  5. As to the separation of p - xylene / m - xylene, in order to blend polymer hydrophobe with p - cd which is preferential to adsorb p - xylene, etherified p - cd was synthesized using benzyl chloride ( phch2cl ). the influences of etherification conditions on the reaction conversion and the degree of substitution of etherified p - cd were investigated. the reaction conversion increases with the increasing of molar ratio of phcr ^ cl : p - cd and the concentration of p - cd

    對于px mx體系的分離，為使對px具有優先絡合能力的一環糊精（ cd ）能夠與油溶性高分子共混，本文採用williamson合成法運用氯化芐（ phch _ 2cl ）使-環糊精（ - cd ）醚化，並由元素分析結果，計算出醚化產物的取代度和轉化率，系統地考察了反應條件對轉化率和取代度的影響。
  6. Filling flexibilizer, such as epoxy terminal block, polyurethane ether structure, thiokol and liquid ctbn to the system of expoxy - mannich amide, through the test on shear strength, bounding elasticity modulus and break strength of cured products, the different fuction could be found using different flexibilizers

    摘要在環氧酚醛胺體系中使用端環氧基聚氨酯醚、聚硫橡膠、液體丁腈橡膠等活性增韌劑，通過對固化物剪切強度、彎曲彈性模量及斷裂強度的測試對比，可以看出不同增韌劑效果不同。
  7. The dual - bath coagulation method suggested by j. a. va n ' t hof could be used in membranes with high selectivity clearance rate of low - molecular weight substances and moderate water flux theoretically. therefore it may be applied in the field of hemofiltration. to improve and optimize the performance of the pes ultrafiltration membrane applied in the hf, here the flat membranes and hollow fiber ( hf ) membranes are made in certain conditions based on the dual - bath coagulation method where pes is used as the membrane material, dmso as solvent and pvp & peg as additives this paper includes five parts as follow : 1

    為了改善和優化聚醚碸超濾膜（單浴法）在血液過濾實際應用中的性能，本論文以j . a . van ' thof等提出的雙凝固浴法為基礎，以聚醚碸（ pes ）為主要成膜材料，以二甲基亞碸為溶劑，並添加一定分子量的致孔劑（ pvp ，聚乙烯吡咯烷酮）以及一定分子量的添加劑（ peg ，聚乙二醇）按照一定配比在一定溫度下製成透明均一的鑄膜液，靜置脫泡后在一定的工藝條件下製成聚醚碸平板膜和中空纖維膜，然後通過測試膜的結構和性能來評估其用於血液過濾中的前景。
  8. Effect of reaction temperature on etherification of light fcc gasoline

    反應溫度對輕汽油醚化過程的影響
  9. Determination of degree of etherification of sodium carboxymethylcellulose for detergents

    洗滌劑用羧甲基纖維素鈉醚化度的測定
  10. In order to study the influence factors of aoa of rose flowers, the effects of drying and extraction methods on the aoa of rose flowers were investigated. the results indicated that drying after high - temperature short - time pretreatment was rather effective to maintain their aoa ; the aoa of water extracts was stronger when the temperature was raised from 25 to 100 ; by using orthogonal test, the optimum extraction conditions of rose flowers were : solvent - 75 % ethanol ; ratio of material and solven - 1 : 10 ; extraction times - three times with 24 h at one time, at the room temperature. the extracts obtained by 75 % ethanol were fractionatedly extracted with petroleum, diethyl ether, ethyl acetate and n - butanol in turn, and the various fractions " aoa were analyzed

    為了探討玫瑰花抗氧化活性的影響因子，比較了不同乾燥方法、提取方法對其抗氧化活性的影響，發現：經短時高溫處理后再進行乾燥有利於較好地保持玫瑰花的抗氧化活性；以水作溶劑提取時， 25 100范圍內水提液的抗氧化活性隨著溫度的升高而增強；通過正交實驗篩選得到常溫下玫瑰花抗氧化活性物質的最佳提取方法為： 75乙醇為溶劑，液料比1 ： 10 ，提取3次，每次24h ； 75乙醇提取物依次用石油醚、乙醚、乙酸乙酯、正丁醇等有機溶劑進行兩相分部萃取，發現玫瑰花的抗氧化活性物質主要存在於乙酸乙酯部，說明玫瑰花抗氧化活性主要成分可能是單寧類、黃酮苷類和原花色素類化合物； 4
  11. Effects of coagulation bath temperature on the structure and performance of polyethersulfone hollow - fiber membranes by dry wet process

    凝固浴溫度對相轉化聚醚碸中空纖維膜結構與性能的影響
  12. Aliphatic alcohol ehter alkyl capping series products have many particular properties, such as, low foam, strong lipophilicity, strong acid - base stability, good emulsification, low pour point, little viscosity change, chlorinated stability, heat resistivity and good property of anti - coking

    脂肪族醇醚的烷基封端系列產品具有很多獨特的性質，如泡沫低、新油性強、酸堿穩定強、乳化能力好、流動點低、粘度變化小，氯化穩定性、耐熱性、抗結焦性能力好。
  13. By static tests, studied the uf characteristics of the uf membranes, which have two kinds of intercept molecular eight, and made from pes, pek, spes and spk ， in treating black liquid from basic straw pulp. the result showed : at the condition of static contacting, the pes and spes spk are polluted by composition of black liquid in a less degree, and the pek is in the heaviest edgree. the sulphonaled membranes with higher negative charge have better uf characteristics of black liquid. the uf membranes characteristics of 20 thousand intercept molecular weight are superior to 50 thousand intercept molecular weight

    通過靜態試驗，研究了兩種截留分子量的聚醚碸、聚醚酮、磺化聚碸/聚醚碸、磺化聚碸/聚醚酮等超濾膜處理堿法草漿黑液的超濾特性，結果表明：靜態接觸條件下，聚醚碸及磺化類膜受黑液組份的污染程度較輕，聚醚酮膜的污染程度最重；荷負電性較高的磺化類膜具有較好的黑液超濾特性；截留分子量2萬的超濾膜特性要優於5萬的膜。
  14. To capsicum for raw materials dissolved in ethanol and used petroleum ether, ether from the organic solvent solution extraction and purification wealthy markets prospect of food additives and with extensive medical value of the material - pepper accuracy ; and further research in ethanol concentration, saponification time, temperature under different conditions, such as the purity level of capsaicin

    以辣椒精為原料溶於乙醇中，再利用石油醚、乙醚等有機溶劑從溶液中提取和純化富有市場前境的食品添加劑和具有廣泛醫用價值的物質辣椒精；並進一步研究在乙醇濃度、皂化時間、溫度等不同條件下得到的辣椒堿純度高低。
  15. Promote scientific research and technological transfer ; prioritize the development of natural fibre and artifical fibre with natural plants as raw materials ; intensify r & d efforts in new type high - tech fibre such as pps and ppt ; increase the degree of industrial intensification and comprehensive matching capacity so as to form a diversified development pattern with series products of textile materials, industrial cloth, engineering cloth, decorative cloth and ready - made clothing

    加強科研和成果轉化，重點發展天然纖維和以天然植物為原料的人造纖維，加大聚苯硫醚、 ppt等新型高技術纖維的研發力度，提高產業集約化程度和綜合配套能力，形成紡織面料、產業用布、工程用布、裝飾用布和服裝成衣等產品系列化發展的格局。
  16. 5303 - 98 is an amino resin of hexa methoxyl methyl melamine

    5303 - 98樹脂是一種高醚化度的氨基樹脂。
  17. The influence of catalyst on the copolymerization of epoxy and cyanate was investigated, and the mechanism of their copolymerization was discussed. the catalyst can obviously accelerate the curing of the resin to decrease the curing temperature. the three kinds of reactions ( cyclotrimerization, co - reaction and polyetherification ) in their copolymerization are not simultneous and independent to each other. in the lack of cyanate functional group, the main structures are oxazoine and polyether structure in the cured resin, and the triazine ring structure is of miner importance

    研究了催化劑對環氧樹脂與氰酸酯樹脂的共聚固化反應行為的影響，並初步探索氰酸酯/環氧固化的反應歷程.研究表明，催化劑能明顯地促進其固化反應，降低固化溫度，縮短固化時間；氰酸酯與環氧共聚反應歷程是首先氰酸酯三聚反應生成三嗪環結構，然後三嗪環開環與環氧共聚反應，最後是未能參與共聚反應的環氧官能團在唑啉結構和三嗪環的催化下發生聚醚化反應；在氰酸酯官能團欠量的條件下，固化樹脂中主要是唑啉和聚醚結構，而三嗪環結構的含量很少
  18. Abstract : the expressway landscape and its design and studies, the shift from economic compensation of forestland to landscape compensation during the construction of high - grade highway, the measures to conduct ecological environmental protection and the relationship between highway design and living environmental protection are discussed and studied

    文摘:紫外光度法測定水中油類時在標準油品、波長的選擇以及氯化鈉用量和石油醚純度等方面存在的問題進行了探討，提出以工作曲線代替標準曲線，使回收率達到97 %左右。
  19. The curing conditions were studied and the result indicated that the product showed a good storage, decreased the curing temperature, improved adhesion and brittleness, with an excellent film performance. expecially the adadhesion, flexibility and chemicol resistance

    結果表明，合成的交聯劑貯存性能良好，醚化三聚氰胺樹酯作為交聯利加入到丙烯酸環氧樹酯中，可以明顯降低固化溫度且改善原有塗膜的脆性，成膜性能好，尤其是具有優良的附著力、柔韌性和耐化學品性。
  20. Methods for chemical analysis of gallium - the phenylfluorone - polyethylene glycol octyl phenyl ether photometric method for the determination of germanium content

    鎵化學分析方法苯基熒光酮-聚乙二醇辛基苯基醚光度法測定鍺量
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