氮烷 的英文怎麼說
中文拼音 [dànwán]-
Organic dyes related in this review included the following categories, the triphenymethanes, the azo dyes, the phthalocyanines, the hydroxyanthraguinones and etc ( 58 ref. citd )
文中沙及的有機染料主要有:三苯甲烷類、偶氮類、酞菁類及羥基蒽醌類等(引用文獻58篇) 。Diazaspiro [ 4. 4 ] nonane was synthesized from malononitrile as the starting material by a series of nucleleophilic displacement, hydrolytic cyclization and carbonyl reduction
摘要以丙二腈為原料,經過親核取代、水解環合、羰基還原系列反應,合成了2 , 7 -二氮螺[ 4 . 4 ]壬烷。This method is to obtain multi - fungi from water and waster water by methylene chloride fluid - fluid extract nitrogen, and then take the concentration purification to the highly effective liquid phase color spectrometer where it can be detected by the diode matrix detector
摘要用二氯甲烷液液萃取氮吹濃縮法萃取水和廢水中的多菌靈,取濃縮純化后的有機相直接進樣到高效液相色譜儀,用二極體矩陣檢測器檢測,根據保留時間外標法定量。Synthesis and industrial production of five hydrogenolysis - debenzylation compounds from hexabenzylhexaazaisowurtzitane
六芐基六氮雜異伍茲烷五種氫解脫芐化合物的合成及工業制備N - methyl piperidine base
甲基氮雜環己烷By using sterically hindered, electron - rich alkylphosphines and n - heterocyclic carbenes ( nhc ), this process has encompassed a broad range of substrates including ketones, aldehydes, esters, amides, malonates, nitrocompounds, nitriles and sulfones
隨著大位阻、富電子烷基膦和氮雜環卡賓( nhc )為配體的催化體系的出現,該類反應的底物已從酮擴展到醛、酯、酰胺以及含酸性氫的化合物如丙二酸酯、硝基化合物、腈、碸等。The investigation of catalytic activity of la - sr - fe - co perovskite - type - oxide
甲烷在鈣鈦礦型催化劑上脫硫脫氮的研究At the same time, especially in air two peaks turned little and became a continuous process at low heating rate ( 5 c / min ). the residue was 15 % in air compared to 3 % in n2, because pdms turned into sio2 of solid state in air, but ds of gas state in na
發現在氮氣氣氛中的殘留物重為3 ,而在空氣下為15 ,這是因為聚硅氧烷在氮氣中分解成環三硅氧烷揮發了,而在空氣中形sio _ 2 。Other contributors include methane released from landfills and agriculture ( especially from the digestive systems of grazing animals ), nitrous oxide from fertilizers, gases used for refrigeration and industrial processes, and the loss of forests that would otherwise store co2
其它氣體包括垃圾和農業(食草動物的消化系統)排放的甲烷、肥料中的氮氧化物、用於致冷和工業加工的氣體,以及能夠儲藏二氧化碳的森林面積的減少。The coal - bed gas is the one kind low pollution energy, and its major composition is methane, a small amount heavy hydrocarbon and some non - hydrocarbon gas bodies ( such as nitrogen gas, the carbon dioxide etc )
煤層氣是一種低環境污染能源,其主要成分是甲烷,少量重烴氣體和一些非烴氣體(如氮氣,二氧化碳等) 。Diaryl nitroxides are even more stable than the dialkyl nitroxides.
二芳基氮氧化物比二烷基氮氧化物還要穩定。It also supplies liquid oxygen, liquid nitrogen, acetylene, carbon dioxide, hydrogen, propane, freon, liquid ammonia, and rare element gas
還兼營液氧、液氮、液氬、乙炔氣、二氧化碳、氫氣、丙烷氣、氟里昂、液氨及其他高純和稀有氣體。This fact is clearly demonstrated by the ready formation of polyethylidene and polybenzylidene from (highly reactive) diazomethane.
這個事實已由(高度活躍的)重氮甲烷快速形成聚乙叉和聚芐叉而清楚的證明。. . creating a new kind of diazomethane
生成一種新得重氮甲烷化合物Creating a new kind of diazomethane
生成一種新得重氮甲烷化合物According to the features of naphthenic base oil ( i. e., high nitrogen and low sulfur content ) and based upon theoretical analysis of the h2s concentration needed for phase equilibrium of nickel sulfide and tungsten sulfide in hydrogen, the most economic quantity of sulfiding agent injected into the reactor for supplement of sulfur in lube oil hydrogenation catalysts was obtained
摘要針對環烷基油高氮、低硫的特點,通過對硫化鎢和硫化鎳在氫氣中相平衡態所需硫化氫濃度的理論分析,對反應器入口所需補硫量作了詳細的闡述,得出了最經濟的補充注硫量。The results show that the chosen test variables have no effect on the activity of methane, except that the activity refeering to the blast limit was restrained at a certain extent by nitrogen and carbon dioxide adulteration
結果表明,甲烷活性隨貯存時間的延長沒有變化,甲烷通過水、硫酸、氫氧化鈉洗氣后活性沒有變化;氮氣、二氧化碳在一定程度上可抑制甲烷與空氣混合爆炸,且二氧化碳的影響稍大;氨氣則沒有影響。Methane and nitrous oxide were two of the most important green - house gases after carbon dioxide
甲烷和氧化亞氮是重要的溫室效應氣體,它們對溫室效應的貢獻僅決于co _ 2 ,居第二、三位。N sources ( including organic and inorganic n tested ) and c sources tested could restrain methane oxidation. cellulose inhibited methane oxidation most weakly while the high concentration of methanol and glucose did dramatically, but the proper concentration of methanol could stimulate soil methane oxidation sharply. in the middle process of methane oxidation, addition of glucose could restrain methane oxidation shortly but the inhibition could be relieved about 5 days later when supplied again with enough oxygen
土壤微生物是甲烷氧化的主要生物類群,含水量對土壤甲烷氧化活性有明顯影響,過高或過低對甲烷氧化均具有抑制作用;氮源(包括有機和無機氮源)對甲烷氧化均有抑制作用;不同碳源對甲烷氧化的影響各異,纖維素對甲烷氧化抑制作用最小,而高濃度的甲醇、葡萄糖則對甲烷氧化具有強烈抑制作用;而適當濃度的甲醇可極大促進土壤對甲烷的氧化:在甲烷氧化過程中加入葡萄糖能迅速抑制甲烷氧化;在加入葡萄糖的同時保持瓶中充足的氧氣,則這種抑制作用可以在重新培養一定時間后得到解除。The diazirines are interesting, highly strained ring systems.
偶氮雜環丙烷是一類重要的、環內張力頗大的化合物。分享友人