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氯萘
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  chloronaphthalene
     Results:When the concentration of chloronaphthalene was in the range of 0.33~6.67 mg/m~3,r>0.999.Determination limit was 0.3 μg/ml. The lowest determinable concertration was 0.04 mg/m~3 when 7.5 liter workplace air sample was colleceted.
     结果:当空气中氯萘浓度范围在0.33~6.67 mg/m3(参照国标PC-TWA 0.5 mg/m3)时,相关系数r>0.999,检出限0.3μg/m l,以采集7.5 L空气样品计,最低检出浓度0.04 mg/m3。
短句来源
     Desorption efficiency was 90%. After taking 10.0 μg of chloronaphthalene by silica gel tube 7 days,recovery efficiency was 90%.
     平均解吸效率90%,硅胶吸附10.0μg氯萘,样品放置7 d后,回收率仍达90%。
短句来源
     GC determination for chloronaphthalene desorbed by solvent in workplace air
     气相色谱法测定工作场所空气中氯萘
短句来源
     Conclusion:This method can be used to determine the concentration of chloronaphthalene in the workplace air.
     结论:本方法可用于工作场所空气中氯萘的检测。
短句来源
     Objective:To establish a gas chromatographic(GC) analytical method for chloronaphthalene in the workplace using silica gel tube for sampling.
     目的:建立用硅胶管采集工作场所空气中氯萘的毛细管气相色谱分析方法。
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  “氯萘”译为未确定词的双语例句
     The inhibitory effect of daidzein on recombinant holoenzyme and its kinetics were determined according to IC 50 . Results: Daidzein obviously inhibited CK2 holoenzyme activity (IC 50 = 2.38 μmol/L), and its inhibitory effect was superior to that of the known CK2 inhibitors such as 5, 6-dichloro-1-β-D-ribofuranosyl benzimidazole (DRB) and N-2-aminoethyl-5-chloronaphthalene-1-sulfonamide (A3).
     结果 :大豆黄酮能显著抑制重组人蛋白激酶 CK2的活性 (IC50 =2 .38μmol/ L ) ,抑制作用明显强于已知的 CK2抑制剂 5,6-二氯 - 1 -β- D-呋喃核糖苯并咪唑 (DRB)和 N- (2 -氨乙基 ) - 5-氯萘 - 1 -硫胺 (A3)。
短句来源
     The ultrasonic degradation kinetics of 1-chloronaphthalene in aqueous solution are found to be first-order and the degradation rate coefficients is -4.27×10 -2?
     1-氯萘降解动力学为一级反应 ,降解速率常数为 - 4.2 7× 10 -2 min-1。
短句来源
     Sonochemical Degradation Kinetics of 1-Chloronaphthalene in Aqueous Solution
     1-氯萘的超声化学降解动力学研究
短句来源
     Studies on Protein Kinase C Immune Modulation Agents and Synthesis of 5-Chloro-1-Naphthalenesulfonamides
     氯萘磺酰胺类化合物的合成与蛋白激酶C免疫调节作用
短句来源
     The research results of sonochemical degradation of 1-chloronaphthalene in aqueous solution are presented. It is found that 1-chloronaphthalene can be decomposed with ultrasonic treatment in water and 93% 1-chloronaphthalene is removed after 60 min sonolysis.
     研究了水溶液中 1-氯萘的超声化学降解动力学 ,结果表明 ,水溶液中的 1-氯萘可通过超声化学方法有效降解 ,超声处理 60min ,降解率可达 93 %。
短句来源
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  相似匹配句对
     Sonochemical Degradation Kinetics of 1-Chloronaphthalene in Aqueous Solution
     1-氯萘的超声化学降解动力学研究
短句来源
     GC determination for chloronaphthalene desorbed by solvent in workplace air
     气相色谱法测定工作场所空气中氯萘
短句来源
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  chloronaphthalene
The concept of the molar response (MR) in HRGC/EI-MS has been checked for naphthalene and three chlorinated naphthalenes: 1-chloronaphthalene, 1,2,3,4-tetrachloronaphthalene and octachloronaphthalene.
      
Above extraction equilibria were confirmed to hold in cases of various extracting solvents including planar solvents (1-chloronaphthalene, etc.) and non-planar solvents (1,2-dichloroethane, chloroform).
      
A hexafluorotantalate(V)-selective coated-graphite electrode was prepared by coating a graphite rod with brilliant green-hexafluorotantalate(V) extract in 1-chloronaphthalene in a PVC matrix.
      
chlorobenzene or 1-chloronaphthalene with a series of normal alkanes (n-Cn,n = 6, 8, 10, 12, 14, 16), and with a series of highly branched alkanes (br-Cn,n = 6, 8, 12, 16), viz.
      
The α position of naphthalene showed a reactivity 2.5 higher with respect to benzene, while the absence of 2-chloronaphthalene among the products confirmed the relatively high activation energy required for the attack in β position.
      
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(1) Two useful intermediates for the synthesis of desdimethylaminoterrarubein(Ⅰ), namely 4-methyl-8-methoxynaphthol-[1] (Ⅳ) and 1, 8-dimethoxy-4-methyl-2-naphthoic acid (Ⅶ) were prepared and their structures ascertained. (2) The synthesis of 4-methyl-8-methoxynaphthol-[1] (Ⅳ) was accomplishedby two different routes. One consists of three stages of reactions: 1, 8-naphthalenediolwas mothylated to give 8-methoxynaphthol-[1] (Ⅱ), m. p. 55°, which was convertedinto 4-hydroxy-5-methexynaphthadehyde-[1] (Ⅲ), m. p....

(1) Two useful intermediates for the synthesis of desdimethylaminoterrarubein(Ⅰ), namely 4-methyl-8-methoxynaphthol-[1] (Ⅳ) and 1, 8-dimethoxy-4-methyl-2-naphthoic acid (Ⅶ) were prepared and their structures ascertained. (2) The synthesis of 4-methyl-8-methoxynaphthol-[1] (Ⅳ) was accomplishedby two different routes. One consists of three stages of reactions: 1, 8-naphthalenediolwas mothylated to give 8-methoxynaphthol-[1] (Ⅱ), m. p. 55°, which was convertedinto 4-hydroxy-5-methexynaphthadehyde-[1] (Ⅲ), m. p. 112.5--113°, by Gatter-mann aldehyde synthesis and (Ⅲ) was then reduced into the requisite compound(Ⅳ), m. p. 75--76°, by Huang-Minlonmodified Woelff-Kishner reduction. Another route to the synthesis of Ⅳ consists of the following sequence ofreactions: 2-Chloro-5-aminobenzoic acid was diazotized in dilute acetic acid insteadof in dilute HCl or H_2SO_4 as reported in literature, giving 2-chloro-5-hydroxyben-zcic acid in satisfactory yield. Its methylether was converted into the correspondingchloride (Ⅷ), b. p. 126--128°/5 mm. and m. p. 24--25°, which was caused tocondense with diazomethame to give the diazoketone (Ⅸ), m .p. 46--47°. Ⅸ wasthen treated with HCl or HBr to form 2 chloro-5-methexyphenacyl chloride (Ⅹa),m. p. 40° or the bromide (Ⅹb), m. p. 14°, respectively. Either Ⅹa or ,Ⅹb was allowed to condense with diethyl sodiomalonaio giving, after hydrolysis of the resulting ester,2-chloro-5-methoxyphenacyl malonic acid (Ⅺ), m. p. 170°, which, in turn, producedβ-(2-chloro-5-methoxybonzoyl)-propionic acid (Ⅻ), m. p. 92--93°, by pyrolysis.γ-Hydroxy-γ-(2-chloro-5-methoxyphenyl)-valerolaetono (ⅩⅢ), b. p. 133--134°/ca.0.03 mm, was obtained by treating Ⅻ with methyl magnesium bromide. It affordedan unsaturated ester (ⅩⅠⅤ), b. p. 120°/ca. 0.02mm, by successive treatment withthionyl chloride, ethanol and finally by pyrolysis. Hydrogenation in the presenceof Adams' catalyst followed by hydrolysis converted ⅩⅠⅤ into γ-(2-chloro-5-methoxyphenyl)-valeric acid (ⅩⅤ), m. p. 82-83°, the chloride of which was cyelizedto 4-mothyl-5-chloro-8-methoxyletralone-[1] (ⅩⅤⅠ), m. p. 76--77°. Bromination ofⅩⅤⅠ witb one mole of bromine gave 2-bromo-4-methyl-5-chloro-methoxytetralone-[1] (ⅩⅤⅡ), m. p. 85--86°. Dehydrobromination of ⅩⅤⅡ was effected readily byheating with morpholine on water--bath for 3 minutes giving 4-methyl-5-chloro-8-methoxynaphthol-[1] (ⅩⅤⅢ), m. p. 122--123°. Finally it was converted intoⅣ by hydrogenolysis in the plesence of Pd-SrCO_3 catalyst. The behaviors of the final product (Ⅳ) obtained by two different routes wereshown to be identical in all respects. (3) 1, 8 Dimethoxy-4-methy-2-Inaphthoic acid was synthesised by the followingreactions: Ⅳ was first brominated to form 2-bromo-4-methyl-8-methoxynaphthol-[1] (Ⅴ), m. p. 104--105.5°, which was then methylated, giving 2-bromo-4-mothyl-1, 8-dimethoxynaphthalene (Ⅵ), m. p. 44--46°. Successive treatmentwith n-butyl lithium and carbon dioxide converted Ⅵ into Ⅶ, m. p. 121--122.5°. The structure of Ⅶ was proved as follows: Bromination of ⅩⅤⅠ with twomoles of bromine afforded 2, 2-dibromo-4-methyl-5-chloro-8-methoxytetralonel-[1](ⅪⅩ), m. p. 129--130°. It was converted into 1, 8-dimethoxy-2-bromo-4-methyl--chlcro-naphthalene (ⅩⅩ), m. p. 87--88°, when treated with sodium methoxide andlimethyl sulfate simultaneously. On the other hand, chlorination of Ⅵ, produced2, 4-dichloro-5-methyl-7-bromo-8-mothoxynaphthol--[1] (ⅩⅩⅩⅠ), m. p. 156--157°nstead of tine expected ⅩⅩ. Since ⅩⅩⅠ could also be obtained by chlorination ofⅩⅩ, the position of bromine in Ⅵ was thus demonstrates and therefore the strua-ature of Ⅷ ascertained.

本文报告脱二甲胺地霉红(Ⅰ)合成工作中两种有用中间体4-甲基-8-甲氧基萘酚-[1](Ⅵ)和1,8-二甲氧基-4-甲基萘甲酸-[2](Ⅶ)的合成以及其结构的证明。 4-甲基-8-甲氧基萘酚-[1](Ⅳ)可从两条途径合成:其一由8-甲氧基萘酚-[1](Ⅱ)经Gattermann醛合成及黄鸣龙改良Kishner-Wolff还原法而得。另一途径由2-氯-5-甲氧基苯甲酰氯(Ⅷ)经八步反应,首先获得4-甲基-5-氯-8-甲氧基四氢萘酮-[1](ⅩⅥ),其中每步反应都分离得到纯粹的产物。将ⅩⅥ经溴化,脱溴化氢及氢解反应便生成化合物(Ⅳ)。从这两途径所得的最后产物(Ⅳ)性质完全相同。 1,8-二甲氧基-4-甲基萘甲酸-[2](Ⅶ)乃由化合物Ⅳ引入溴原子,甲基化后,经金属-卤素的交换及羧基化而得。Ⅶ的结构证明如下;化合物(ⅩⅥ)经二溴化及脱溴化氢、甲基化后,生成1,8-二甲氧基-2-溴-4-甲基-5-氯萘(ⅩⅩ),另一方面,将Ⅵ氯化以期获得ⅩⅩ,却得到2,4-二氯-5-甲基-7-溴-8-甲氧基萘酚-[1](ⅩⅪ)。由于将ⅩⅩ氯化亦得到ⅩⅪ,化合物Ⅵ中溴的位置得到证明,因此Ⅶ的结构也予以肯定。

A number of carbamates useful as insectisides have attracted much attention owing to their marked physiological activity. Both phenyl, naphthyl N,N-dimethylcarbamates as well as their mono- and dichloro-analogues were prepared in the present work in order to study the relationship between chemical constitution and insecticidal activity. Preliminary tests showed that dichloro-phenyl N,N-dimetnylcarbamate possessed strong insecticidal activity against house-flies, naphthyl N,N-dimethylcarbamate displayed strong...

A number of carbamates useful as insectisides have attracted much attention owing to their marked physiological activity. Both phenyl, naphthyl N,N-dimethylcarbamates as well as their mono- and dichloro-analogues were prepared in the present work in order to study the relationship between chemical constitution and insecticidal activity. Preliminary tests showed that dichloro-phenyl N,N-dimetnylcarbamate possessed strong insecticidal activity against house-flies, naphthyl N,N-dimethylcarbamate displayed strong insecticidal activities both to house-flies and mosquito-larvae whilst monochloronaphthyl N,N-dimethylcarbamate was more active to mosquito-larvae than to house-flies. Toxicity tests against 'mammalians are in progress.

本文合成了N,N-二甲氨基甲酸苯酯、4-氯苯酯、2,4-二氯苯酯、萘酯、4-氯萘酯、2,4-二氯萘酯等6种,并比较其杀虫效力,借以了解芳核上代入氯原子对杀虫作用的影响.对家蝇触杀作用,以苯核上代入2个氯原子的效果较好,萘核上代入氯原子对家蝇的触杀作用有所降低,而其一氯取代物对蚊蚴的浸杀效力略有增强.

The black rot [Ceratocystis fimbriata (Ell et Halst.) Hunt.] of sweet potato seedlings is one of the important sources of field infection. Dessimination of the fungus spores occur when the seedlings are picked from the seed-bed and dipped in water for keeping freshness. Seedlings thus infested begin to show symptoms after an incubation period of 5—7 days in soil at a temperature of about 20℃. After developing necrotic spots, the lower part of the seedlings begin to decay. To eliminate seedling infection, 18...

The black rot [Ceratocystis fimbriata (Ell et Halst.) Hunt.] of sweet potato seedlings is one of the important sources of field infection. Dessimination of the fungus spores occur when the seedlings are picked from the seed-bed and dipped in water for keeping freshness. Seedlings thus infested begin to show symptoms after an incubation period of 5—7 days in soil at a temperature of about 20℃. After developing necrotic spots, the lower part of the seedlings begin to decay. To eliminate seedling infection, 18 fungicides for seedling dipping were tested. It was shown that 1:600 (50% wettable Phygon) and 1:2000 (2.12%) Phenyl mercuric acetate were most promising.

药剂浸秧防治黑斑病[Ceratocystis fimbriata(Ell.& Halst.)Hunt.]的試驗証明赛力散与二氯萘醌效果最好。1960—1962年田間試驗用剪去薯秧基部1厘米长的白茎,豎插于10厘米深的600倍(50%)可湿性二氯萘醌或2000倍赛力散水悬液内浸10分钟,再整株蘸药保护,其保苗率一般在80%—95%,比对照增产50%左右。經大田示范推广,一致証明保苗率在90%以上。在薯秧供应不足的条件下,可将带有病斑的薯秧剪去病斑及以上1厘米高处,然后浸药,也有相同的防病保苗作用。

 
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