formamide 中文意思是什麼
formamide
解釋
甲醛胺-
Testing of textiles ; quantitative analysis of binary mixtures, acrylic, modacrylic and certain polyvinyl chloride fibres with other fibres, dimethyl formamide method
紡織品的檢驗.丙烯酸纖維改良丙烯酸纖維及某些聚氯 -
Meso - tetra ( 4 - acyloxyphenyl ) pophyrin was prepared by usual procedure from acyl chloride and meso - tetra ( 4 - hydroxyphenyl ) porphyrin in benzene and obtained in 86. 4 % yield. treatment of the free base with zinc chloride in dimethyl formamide ( dmf ) - dichloromethane ( ch2cl2 ) yielded corresponding zinc porphyrin complex. the spectral data ( uv - visjr / h - nmr ) and elemental analysis are in agreement with the assigned structures
在合成工作基礎上,採用紫外可見光譜( uv - vis ) 、紅外光聲光譜( ftir - pas ) 、核磁共振氫譜( ~ 1hnmr ) 、元素分析、摩爾電導等手段研究了卟啉及金屬卟啉材料的組成及結構。 -
The reactions are selectively compatible with such diverse slurry additives as alcohols, glycols, glycerol, urea, formamide.
與醇類,二醇類,丙三醇,尿素,甲酰胺各種漿液附加物進行反應時,在相言性方面是有選擇性的。 -
The preparation of optically active composite is a promising alternative to obtain a kind of new and competitive sensing membrane for fiber optic sensors, and has attracted the global attention. in this thesis, the modified sol - gel sensing membranes based on fluorescence quenching have been prepared by using tetraethoxysilane ( teos ) and dimthyldimethoxysilane ( dds ) as the main material, formamide as the drying control chemical additive ( dcca ), ru ( phen ) 3cl2 and ru ( bpy ) 3cl2 as the indicator. this kind of membranes is crack - free and has low indicator - leaking rate
本文以四乙氧基硅烷( teos ) 、二甲基二乙氧基硅烷( dds )為主要原料,以甲酰胺為控制乾燥劑,二價釕離子絡合物釕( ) ?聯吡啶( ru ( bpy ) _ 3cl _ 2 )和釕( ) ?菲咯啉( ru ( phen ) _ 3cl _ 2 )為熒光指示劑,採用改進的溶膠凝膠技術,通過添加控制乾燥劑和有機摻雜兩種手段,制備了基於熒光猝滅原理的光纖氧敏感膜。 -
The intercalation reaction is very sensitive to moisture and a small amount of water added to the kaolinite - formamide system facilitates the intercalation reaction
插層反應對插層劑中的水含量非常敏感,最佳含水量為5 9 。 -
The ratio of tetraethyloxysilane ( teos ) : ethanol : distilled water is 1 : 3 : 4. n - n " dimethyl formamide ( dmf ) was used as solvent and drying control chemical additive ( dcca ) in a proportion of 0. 3 dmf / ethanol volume ratio. drops of hf / hc1 mixture acid was added to promote hydrolysis ( ph = 2 )
溶劑的選擇對基質凝膠孔的形狀基本沒有影響,但對其孔徑分佈有較大影響:在hf / hci混合酸催化情況下, dmf溶劑的樣品孔徑最小, dmf /乙醇混合溶劑的其次,乙醇溶劑的樣品孔徑最大。 -
The acute dimethyl formamide poisoning accident caused by garment making
制衣過程引起的急性二甲基甲酰胺中毒事故 -
After formamide intercalation, three proton peaks were detected. the proton peak of the inner surface hydroxyl of the intercalation compound shifts to high - field with 52. 3 - 2. 7, whereas the proton peak of the inner hydroxyl shifts to 5 - 0. 3 toward low - field
甲酰胺插層后產生3個質子峰,內羥基質子峰向低場位移至- 0 . 3 ,內表面羥基質子峰向高場位移到2 . 3 2 . 7 。 -
The oxygen sensing properties of the membranes have been studied, the results indicate that the membranes with ru ( phen ) 3cl2 have better oxygen - sensitivity than those with ru ( bpy ) 3cl2, and the membranes with the formamide content of 16 % ( v / v ) and ru ( phen ) 3cl2 content of 2. 10g / l in the precursor mixture have the best structure and quality. the fiber optic gas oxygen sensor with this sensing membrane has a detection limit of 5ppm, a response time of less than 30s, excellent reproducibility and stability. ( 2 ) a new kind of organically modified oxygen - sensitive membrane based on fluorescence quenching was prepared by sol - gel method, using dds and teos as the mixed precursor, rufchenbcla as the indicator
實驗證明:該類敏感膜的tan _ 0 tan值與氧氣濃度存在良好的線性關系;包埋ru ( phen ) _ 3cl _ 2的凝膠膜的氧敏感性相對較好;當甲酰胺為16體積比含量, ru ( phen ) _ 3cl _ 2在前驅體中濃度為2 . 10g l時,制備的敏感膜結構和性能最佳;對氣態氧檢測時,該敏感膜的響應時間小於30秒,檢測下限為5ppm ,具有較好的重復性和穩定性。 -
Solubility soluble in hot water, acetone, 2 - j ketone, n, n - dimethy formamide, ethyl acetoacetate, cyclohexanoneit can recat with ethanol anhydrous
溶解性:溶於熱水及丙酮酮二甲基甲酰胺乙酸乙酯環乙酮溶於無水乙醇並發生反應 -
Discussion on prophylactic measures of occupational dimethyl formamide hazard in imitation - leather industry
仿皮行業二甲基甲酰胺職業危害預防措施探討 -
Workplace air - determination of dimethyl formamide - gas chromatographic method
車間空氣中二甲基甲酰胺的氣相色譜測定方法 -
The theoretical investigation on the mechanism of the thermal decomposition of formamide
注入花生種子引起生物體的微結構變化及其機理 -
Investigation of the occupational hazards of dimethyl formamide in kunshan city of jiangsu province
江蘇省崑山市二甲基甲酰胺職業危害調查 -
Survey on the working condition with dimethyl formamide exposure in artificial leather - producing factories
仿皮製衣廠二甲基甲酰胺作業環境調查 -
Effective evaluation of measures against occupational dimethyl formamide hazards in a pu - leather plant
革企業二甲基甲酰胺職業危害治理措施效果評價 -
Protective function of n - acetylcysteine on acute liver injuries induced by dimethyl formamide
乙酰半胱氨酸對二甲基甲酰胺所致急性肝損傷的保護作用 -
In this paper, the kaolinite / polyacrylamide intercalation compound was prepared first by the displacement reaction of kaolinite / formamide intercalation precursor with acrylamide, and then the in - situ polymerization of acrylamide. the kaolinite structure and the intercalation mechanism were discussed by the techniques of powder x - ray diffraction analysis, * h mas nmr, raman, and ir spectra
本文以甲酰胺為前驅劑、丙烯酰胺為取代劑,採用插層-取代-原位聚合的方法制備高嶺石有機插層復合物,用x射線衍射、 ~ 1hmasnmr 、 raman 、 ir等技術研究了插層復合物結構特徵和插層反應機理。
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