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苯酮
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  benzophenone
     Photoreduction of benzophenone (BP) derivatives characteristic of molecular selfaggregation (PKT) [p-C_6H_5COC_6H_4CH_2 N~+(CH_3)_2C_(12)H_(25)Br~-] and its physical behaviors have been studied.
     本文研究了一种具有分子自聚集作用的二苯酮(BP)衍生物ρ-C_6H_5COC_6H_4CH_2~+N(CH_3)_2C_(12).
短句来源
     The order of benzophenone phosphorescence intensity: BP>Co(VBP-St)>P(VBP) indicates the T-T annihilation decreasing phosphorescence of PVBP.
     从二苯酮(BP)发色团燐光强度序列:BP>Co(VBP-St)>P(VBP),也证明因T-T湮没的存在,使P(VBP)的燐光强度降低.
短句来源
     Conclusion:In the synthesis of 4 (2 chloroethoxy)benzophenone,the proportion of water and 1,2 dichloroethane obviously affects the yield.
     结论:在合成4(2氯乙氧基)二苯酮的过程中,水与1,2二氯乙烷的配比显著影响反应产率。
短句来源
     STUDY OF THE PHOTOSENSITIZED INITIATION SYSTEMSCONTAINING OXYGEN——Ⅰ. Kinetic Study of Photopolymerization of MMA Intiated by Benzophenone/Triethylamine/Oxygen System
     含氧光敏引发体系的研究——Ⅰ.二苯酮/三乙胺/氧体系引发甲基丙烯酸甲酯光聚合反应动力学的研究
短句来源
     Results A new benzophenone was isolated and identified as 2-methoxy-3,4-methylenedioxy-benzophenone (I), along with a known compound 4-hydroxy-2,6-dimethoxy-benzophenone (II).
     结果 分离鉴定了2个二苯酮化合物,其结构分别为2 甲氧基- 3, 4 -亚甲二氧基-二苯酮(I), 4 羟基-2, 6 -二甲氧基-二苯酮(II)。
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  “苯酮”译为未确定词的双语例句
     Calculated based on 2,4'-difluorobenzophenone,the yield and purity of 1-(2-fluorophenyl)-1-(4-fluorophenyl) oxirane was 91.23% and 97.45% respectively.
     以2,4’-二氟二苯酮计,产品收率为91.23%,含量为97.45%。
短句来源
     Studies on Synthesis and Biological Activities of α-(1H-1,2,4- Triazol-1-yl)-β-Arylthioethyl Substituted Phenyl Ketones
     α-(1H-1,2,4-三唑-1-基)-β-芳硫基取代苯酮的合成及生物活性研究
短句来源
     Results: The linear ranges was between 0.05 and 0.6μg· mL -1 ,with the correlation coefficients of 0.9995.The average recovery was 99.2%( RSD =1.0%,n=6) .
     结果 :二苯酮在 0 .0 5~ 0 .6μg/mL范围内线性关系良好 ,加样回收率为 99.2 %(RSD =1.0 %,n =6)。
短句来源
     STUDY OF THE PHOTOSENSITIZED INITIATION SYSTEM CONTAINING OXYGEN
     含氧光敏引发体系的研究——Ⅵ.二苯酮/三乙胺体系引发光聚合过程中的再次引发效应
短句来源
     Through orthogonal experimental design,the optimum reaction conditions were determined: molar ratio of potassium hydroxide, methanol and 2,4'-difluorobenzophenone was 6∶1.25∶1,reaction temperature was 45℃.
     通过正交实验确定最佳工艺条件为:氢氧化钾、甲醇和2,4’-二氟二苯酮的物质的量比为6∶1.25∶1,反应温度45℃。
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  相似匹配句对
     EXPERIMENTAL STUDY ON PHARMACODYNAMICS OF EXIFONE
     依昔苯酮的药效学研究
短句来源
     A new benzophenone from the root of Securidaca inappendiculata
     蝉翼藤根中的一个新二苯酮
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  benzophenone
It was found that when benzophenone was used as single initiator and the crosslink agent is absent, the grafting degree (Dg) increases with the prolongation of irradiation time.
      
The processes of complexation and solvation in the Tb(ClO4)3 · nH2O -adamantylideneadamantane-1,2-dioxetane (I)-benzophenone (II) system in acetonitrile solutions were studied at 280-320 K.
      
Calculations on the bimolecular complexes of acetophenone or benzophenone with anthracene and its substituted derivatives were carried out using a standard quantum-chemical approach to molecular systems.
      
The deactivation pathways for lower triplet excited states of acetophenone and benzophenone were established.
      
Butyl methacrylate was found to affect the composition of radical intermediates formed in the photoreduction of benzophenone with triethylamine.
      
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Eleven 5-nitrofurfurylidene mono-and di-substituted acetophenones with possible schistosomicidal activity have been prepared by condensation of furfural with the requisite substituted acetophenones in alcoholic sodium hydroxide, followed by nitration. Attempts to prepare 5-nitrofurfurylidene-p-hydroxyacetophenone and 5-nitrofurfurylidenep-dimethylaminoacetophenone by nitration failed; the crude products could not be recrystallized. None of these compounds was found effective against experimental schistosomiasis...

Eleven 5-nitrofurfurylidene mono-and di-substituted acetophenones with possible schistosomicidal activity have been prepared by condensation of furfural with the requisite substituted acetophenones in alcoholic sodium hydroxide, followed by nitration. Attempts to prepare 5-nitrofurfurylidene-p-hydroxyacetophenone and 5-nitrofurfurylidenep-dimethylaminoacetophenone by nitration failed; the crude products could not be recrystallized. None of these compounds was found effective against experimental schistosomiasis On mice.

5-硝基呋喃-2-丙烯取代苯酮类的合成,是以等克分子的呋喃甲醛和取代苯乙酮在氫氧化鈉的乙醇溶液中縮合而成呋喃-2-丙烯取代苯酮,然后再在发烟硝酸的乙酐溶液中进行硝化,溫度維持在-10℃以下。所合成的化合物經实驗动物篩选試驗,对日本血吸虫病无預防和治疗作用。

This paper presents the effect of different initiators and solvents on the anionic polymerization of tert-butyl-vinylketone. An amorphous polymer was obtained with softening point at 140-180° when the title monomer was polymerized with n-butyl lithium as anionic initiator in a homogenous phase with pyridine or tetrahydrofuran as solvent, while that in a heterogenous phase such as benzene, toluene, xylene or n-heptane it would give crystalline and probably isotactic polymer with melting point between 260-280℃....

This paper presents the effect of different initiators and solvents on the anionic polymerization of tert-butyl-vinylketone. An amorphous polymer was obtained with softening point at 140-180° when the title monomer was polymerized with n-butyl lithium as anionic initiator in a homogenous phase with pyridine or tetrahydrofuran as solvent, while that in a heterogenous phase such as benzene, toluene, xylene or n-heptane it would give crystalline and probably isotactic polymer with melting point between 260-280℃. The crystalline form showed the characteristic bands at 1100 cm-1 and 1330 cm-1, which were both absent in those of the amorphous form. A series of IR spectra were obtained from mixture of crystalline polymer with various amounts of amorphous form. It was found that bands of 1100cm-1, 1290cm-1, and 1330cm-1 would weaken gradually as the content of crystalline form dropped below 87%, and the spectra would be actually identical with those of the amorphous one of the crystalline part dropped below 14%. Alkali metals as Li, Na, K as well as their organometallic compounds as NaH, LiAlH4, RONa, ROK, RMgX and diphenylketone-Na were also able to initiate heterogenous polymerization.

本文报导了第三丁基乙烯基酮在不同溶剂中应用各种负离子引发剂的聚合研究。以正丁基锂为引发剂,吡啶或四氢呋喃为溶剂时,都是均相聚合,得到无定形聚合物,它们的软化温度为40—180°之间,如果以苯、甲苯、二甲苯或正庚烷为溶剂,则都是非均相聚合,得到结晶性聚合物,有着高达260—280°之间的熔点。上述结晶性与无定形聚第三丁基乙烯基酮的红外光谱有着显著的不同,结晶性聚合物具有特征的吸收峯,以1100厘米~(-1)与1330厘米~(_1)二处最为明显。还研究了不同比例的混合物的红外光谱,当结晶性聚合物含量降至 87%以下时,则 1100厘米~(-1) ,1290厘米~(-1)及 1330厘米~(-1)三处吸收峯逐渐减弱,当减少至13%时则与无定形聚合物的光谱一致。此外金属锂、钠与钾都能引发聚合第三丁基乙烯基酮,也试用了NaH,LiAlH_4,RONa,ROK,RMgX,二苯酮以及二苯酮钠等引发剂进行非均相聚合。

Kinetic studies were carried out on the polymerization of MMA photo-initiated by benzophenone/triethylamine/oxygen (BP/TBA/O2) system. Experimental results shown that the rate of polymerization is directly proportional to [BP]0.25 [TEA]0.25 [MMA] [O2] and [I0]0.5. Some deviation from this relationship has been found in case of too high concentrations of photosensitized initiation system. This may be attributed to the strong enhancing cage deactivation and extinction of the intermediate products. The accelerating...

Kinetic studies were carried out on the polymerization of MMA photo-initiated by benzophenone/triethylamine/oxygen (BP/TBA/O2) system. Experimental results shown that the rate of polymerization is directly proportional to [BP]0.25 [TEA]0.25 [MMA] [O2] and [I0]0.5. Some deviation from this relationship has been found in case of too high concentrations of photosensitized initiation system. This may be attributed to the strong enhancing cage deactivation and extinction of the intermediate products. The accelerating effect of oxygen in this system resulted an increase in the rate of polymerization to 1.4 times and a quantum yield to 4.4×102.

对二苯酮(BP)/三乙胺(TEA)/氧体系光敏引发甲基丙炜酸甲酯聚合反应动力学进行了研究。实验结果表明: 、 R_p=K[BP]~(0.25)[TEA]~(0.25)[MMA][O_2][I_0]~(0.5) 当光敏引发体系的浓度较大时,上述动力学关系发生偏离,认为这是由于笼脱活效应和消光副产物剧增的缘故。体系中氧的加速作用使聚合速度提高1.4倍,量子效率达4.4×10~2。

 
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