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isomer n.【化學】同分異構體;【物理學】同質異構素。 isom...

isomeric

Our study shows that maturity has an effect on the evolution of long chain alkyl benzenes , that is , with the increase of maturity , the carbon number distribution of alkyl benzenes shifts to the lower homologues isomers ; relative abundance of alkyl benzenes isomeride decreases , whereas n - alky benzenes increase 研究表明:長鏈烷基苯的演化受成熟度的影響,表現為隨著成熟度的增加,長鏈正構烷基苯的碳數分布前移,長鏈烷基苯異構體相對豐度減小;而正構烷基苯相對豐度有增加的趨勢。

By choosing different solvents , concentrations and temperatures , and using nmr spectrum technique , to determine the hydroxyl of z / e isomers of perillartine , the concentration of which was 3 . 125 mg / ml , present different chemical shifts in c6d6 , solvent and carbon tetrachloride and in the 1h nmr , and accordingly , conduct qualitative and quantitative analysis of z / e isomers of perillartine 摘要本文利用核磁共振波譜儀,通過對紫蘇葶溶液不同溶劑、不同濃度和不同測試溫度的選擇,使順式結構和反式結構的紫蘇葶羥基峰在核磁共振維氫譜中呈現出不同化學位移值,從而對其順式結構和反式結構進行了定性、定量分析。

( 2 ) in order to achieve the binding mode , the docking simulations were performed between glutathione ( gsh ) and different isomers of 99mtc - hmpao with the package of autodock . the mechanism of the two molecules recognition and the effect of the stereoisomers on its retention in the brain in terms of the level of molecular and theoretical calculations were also discussed in our work Dock軟件模擬腦灌注顯像劑” ” to hmpao的不同的異構體與谷眈甘肽( gsh )的對接,擬獲得二者的初步結合模式,從分子水平和理論計算上對二者的識別機制以及” ” to hmpao的立體構型差異對其滯留效應的影響進行了討論。

An one - pot process including direct condensation of ethyl isodehydracetate and hydrocitronellal , followed by decarboxylation , isomerization and isomer resolution , was developed for practical preparation of zr juvenile hormone analogue series with high content of effective component 摘要以異脫氫乙酸乙酯與甲氧基香茅醛直接縮合為起點,將縮合、脫羧、異構化、 (順、反)異構體拆分等采用多步反應連續一鍋法的操作方法,成功地得到高有效含量的zr型保幼激素類似物。

An one - pot process including direct condensation of ethyl isodehydracetate and hydrocitronellal , followed by decarboxylation , isomerization and isomer resolution , was developed for practical preparation of zr juvenile hormone analogue series with high content of effective component 以異脫氫乙酸乙酯與甲氧基香茅醛直接縮合為起點,將縮合、脫羧、異構化、 (順、反)異構體拆分等采用多步反應連續一鍋法的操作方法,成功地得到高有效含量的zr型保幼激素類似物。

Additionally , we have investigated isomers in neutron - rich nuclei . the analyzing method has been explored . using our technique , some lifetimes of levels in 107 , 109 , 111 , 113ru with low excited energy were analyzed and some new lifetimes of the levels have been discoverd 最后,對豐中子奇a核107 、 109 、 111 、 113ru的集體帶的一些重要特性進行了系統學比較,并利用粒子?轉子模型( prm )程序進行了理論計算,得到與實驗數據很好相符的結果。

By measuring high - fold prompt - ray coincidence events following the spontaneous fission of 252cf , the high spin states in very neutron - rich 113ru nucleus have been studied . furthermore , some isomers in neutron - rich odd - a nuclei 107 , 109 , 111 , 113ru have been analyzed 通過對252cf自發裂變產生的瞬發譜的測量,對極端豐中子核113ru的高自旋態進行了研究,并對豐中子奇a核107 , 109 , 111 , 113ru的低激發態同質異能態進行了分析。

The result shows as follows : one is that hog cu , zn - sod has no isozymes and it contains the same two subunits , with molecular masses of 32112 daltons . the other is that the polymorphism of the cu , zn - sod from hog blood is caused by polymerization and conformational isomers 結果表明:豬血只含一種cu , zn - sod類型,其分子量為32112 ,有兩個相同的亞基構成,本文所測得的亞基約為16293 ,約為分子量的一半。

This paper by using examples of disubs tution cyclohexanes with different and identical functional groups , examines some stereochemistry problems puzzling to stuaents , such as the configuvation conformation , and enantiomorphism isomers , and presents some practical solutions 摘要以基團相同和不同的二取代環己烷為例,分析了環己烷衍生物的構型、構象和對映異構等學生易模糊的立體化學問題。

Currently , with the increase of web demand , the development of web is heading for the distributed framework because the distributed computing shields the isomer of system and supplies the operation of different distributed objects 當前,隨著web需求的不斷增長,使得web的開發應用正向分布式結構的方向發展,分布式計算屏蔽了系統中存在的異構性,提供了分布式對象間的互操作性。

Methods atomoxetine hydrochloride was synthesized using 3 - phenyipropanol as the starting material via six steps , such as chlorination , bromination , etherification , substitution , separation of levorotary isomer and acidification by gaseous hydrogen chloride 方法以1 -苯丙醇為起始原料,經氯代、溴代、醚化、胺化、拆分、氯化氫成鹽6步反應合成鹽酸托莫西汀。

Ion - exchange filler are used in ion - exchange chromatogram ; filler such as gel or polymer microsphere are used in molecular exclusion chromatogram , etc ; chiral bonded filler is used in chiral resolution of corresponding isomer 離子交換填充劑用于離子交換色譜;凝膠或高分子微球等填充劑用于分子排阻色譜等;手性鍵合填充劑用于對映異構體的拆分分析。

To utilize the natural numerous merit of java ( such as distributed ^ architecture neutral , portable ) can breaks through these obstacles to add strong computing power into isomer interlinked environment 利用java天生的諸多優點(如分布式、結構中立、可移植)能夠突破這些重大障礙,使java成為向異構互聯環境添加強大計算能力的理想工具。

It has been found that 1 , 1 - diamino - 2 , 2 - nitroethylene is the most stabilized isomer and has the best exploding properties in three of isomers judged by its the smallest molecular volume 發現1 , 1 -二氨基2 , 2 -二硝基乙烯為最穩定的異構體;其分子體積最小,預示在其同分異構體中爆轟性能最好。 3

Internet ’ s characteristic of magnanimity , isomer and dynamic , make web information extraction different from traditional information extraction , and bring a new challenge meanwhile Internet具有的海量、異構、動態變化等特性使web信息抽取不同于傳統信息抽取,同時帶來了新的挑戰。

Web information extraction is a currently lovely research fileld , but the mass , isomer and dynamics of web data is a difficult of web information extraction Web信息提取是當前比較活躍的一個研究課題,但web數據的大量性,異構性和動態性,是web信息提取的一個桎梏。

Fine chemical , flavours , isomers separation . the separation of thermally sensitive materials , pilot and laboratory columns . reform exisling columns for increased performance 精細化工香料同分異構體分離,適用于熱敏性物質的分離,試驗塔及對有塔的改造。

Plastics . basic materials for polyurethanes . determination of the ratio of 2 , 4 and 2 , 6 isomers in the toluylene diisocyanate by infra - red spectroscopy 塑料制品.聚氨基甲酸酯塑料.用紅外線光譜法測定二異氰酸二苯乙烯中2 4和2 6異構體的含量

Especially , for separating azeotropic mixtures , closing - boiling point mixtures and isomers , pervaporation is regarded as an effective process 特別是用于恒沸、近沸及同分異構有機有機混合物的分離,替代傳統的蒸餾等工藝是非常有意義的。