n-butanol 中文意思是什麼

n-butanol 解釋
正丁醇
  • n : 1. 【羅馬數字】90〈N＝90000〉。2. 【化學】＝nitrogen. 3. ＝North（ern）。N ＝nuclear 核的：N-waste 核廢料。
  • butanol : n. 【化學】丁醇（＝ butalalcohol）.
  1. The anti - microbial activities of crude ethanol extract from aerial parts of sophora alopecuroides and its petroleum ether, chloroform, n - butanol and water fractions of sophora alopecuroides to pythium aphanidermatum, fusarium oxysporum f. sp. cucumerinum, fusarium oxysporum f. sp. lycopersici, alternaria solani, pseudomonas pachrymans and xanthomonas vesicatoria were tested by mycelial radial growth test and agar - well diffusion

    本實驗採用帶毒平板菌絲生長法和瓊脂打孔藥劑擴散法測定了苦豆子地上部分乙醇粗提物及其石油醚、氯仿、正丁醇和水層的不同極性溶劑萃取物對瓜果腐霉、黃瓜枯萎病菌、番茄枯萎病菌、番茄早疫病菌、黃瓜角斑病菌和番茄瘡痂病菌的抗菌活性。
  2. Study on the washing activation energies of sds n - butanol decane water system

    水微乳體系洗滌的研究
  3. Chemical reagent - n - butanol

    化學試劑正丁醇
  4. Food additive n - butanol

    食品添加劑.正丁醇
  5. N - butanol for industrial use

    工業正丁醇
  6. Abstract : the anti - inflammatory effect of n - butanol extract of xanthocerassorbifolia bunge ( bex ) was studied in this paper. the ear edema resulted from dimethyl benzene, paw edema induced by carrageenin, the increase of vascular permeability caused by acetic acid, the chemotaxis of wbc induced by cmc and the weight of cotton granuloma in mice and hind paw edema induced by fresh egg white in rats were inhibited significantly by ig bex daily for 7 days, respectively. the carrageenin - induced paw edema was also inhibited markedly in adrenal - ectomiced mice. no changes in weight of adrenal and the concentration of vitamin c were observed, indicating that the anti - inflammatory effect of bex was not related to pituitary - adrenal system

    文摘:文冠木正丁醇提取物對二甲苯致小鼠耳腫脹、蛋清致大鼠足腫脹、角叉菜膠致小鼠足腫脹、醋酸致小鼠腹腔毛細血管通透性增加、小鼠羧甲基纖維素囊中白細胞遊走、小鼠棉球肉芽腫生長均有顯著的抑制作用，同樣劑量下，文冠木正丁醇提取物對角叉菜膠致去雙側腎上腺小鼠足腫脹仍有顯著的抑制作用，且對小鼠腎上腺重量及腎上腺中維生素c的含量沒有明顯影響。
  7. In general, n - butanol for defatted igy is a simple, rapid and efficient procedure

    總之正丁醇去脂是一種快速、簡便、有效的純化igy的方法。
  8. 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
  9. The results showed that the n - butanol and chloroform fractions had a stronger inhibitory activity to fungal growth and the n - butanol fraction had a stronger inhibitory activity to the bacteria, so that it was surmised that alkaloids in sophora alopecuroides were the major ant - fungal component, and flavonoid glycosides and triterpene glycosides in the n - butanol fraction had both anti - bacterial and anti - fungal activities

    結果表明，正丁醇萃取部分和氯仿萃取部分對真菌生長有較強的抑制活性，正丁醇萃取部分對細菌亦有較強的抑制活性，推測苦豆子中的生物堿是主要的抗真菌成分，存在於正丁醇萃取部分的黃酮和三萜類配糖體等成分同時具有抗真菌和抗細菌活性。
  10. Preparation of mesoporous silica supported so2 - 4 zro2 solid superacid catalysts and their activity on esterification of acetic acid with n - butanol

    2固體超強酸催化劑的制備及其酯化催化活性研究
  11. Stationary source emission. determination of nickel. dimethylglyoxime with n - butanol by spectrophotometry

    大氣固定污染源.鎳的測定.丁二酮肟-正丁醇萃取分光光度法
  12. 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。
  13. In this study, n - bulanol for defatted igy was superior to water dilution ( wd ). after igy was defatted wilh n - butanol, further purification of igy wilh sodium sulphate and ammonium sulphate sailing out were compared. as a result, the salting out procedure of ammonium sulphale was superior to sodium sulphate

    蛋黃正丁醇去脂后應用飽和硫酸銨和飽和硫酸鈉兩種不同鹽析法純化igy進行比較，飽和硫酸銨略好於飽和硫酸鈉鹽析法，其純化后所獲得的產量達9 . 5mgigy / ml卵黃，天津醫科大學碩士學位論文純度94
  14. In the paper, blend composed membranes with different ratio of pva and sa have been prepared supported by hollow fiber ultrafiltration membrane of polysufone. the characterization of the blend membranes has been studied in the dehydration of methanol, isopropanol, n - butanol and tert - butanol. the influencing factors of operating temperature, feed concentration, and feed speed rate have been researched

    此外，實驗中還制備聚乙烯醇與海藻酸鈉聚丙烯腈平板復合膜，分別對甲醇、乙醇進行滲透汽化脫水實驗，發現以聚丙烯腈為底膜的平板復合膜的分離因子比聚碸為底膜的中空纖維復合膜的高。
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