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hydrolyzing
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  水解
     Synthesis and Crystal Structure of Complex [Ni(IDB)_2][C_6H_4(OH)COO]·ClO_4·CH_3CH_2OH·H_2O and Its Catalytic Activity in Hydrolyzing Urea
     配合物[Ni(IDB)_2][C_6H_4(OH)COO]·ClO_4·CH_3CH_2OH·H_2O的合成、晶体结构及催化尿素水解活性的研究
短句来源
     The apparent activity of penicillin G acylase(PGA) immobilized on G-SBA-15 and O-SBA-15 were respectively 1075 IU/g and 1761 IU/g for hydrolyzing penicillin G potassium into 6-aminopenicillanic acid(6-APA) at 37~(o)C.
     G-SBA-15和O-SBA-15用于固定青霉素酰化酶(pen ic illin G acylase,PGA),固定化酶PGA/G-SBA-15和PGA/O-SBA-15在37℃时水解青霉素G钾制备6-氨基青霉烷酸(6-APA)的表观活性分别为1075 IU/g和1761 IU/g.
短句来源
     The result of hydrolyzing Pefachrome? PCa reaction of APCL showed that the dynamic constants Km and Vmax were 3.16×10-5mol/L and 1.16× 10-4mol· L-1·min-1, respectively.
     酶学动力学研究表明APCL水解显色肽反应的Km为3.16×10-5mol/L、Vmax为1.16×10-4mol·L-1·min-1。
短句来源
     Preparation of TiO_2 nanoparticles by forced hydrolyzing Ti(SO_4)_2 alld its catalytic performance
     Ti(SO_4)_2沸腾水解法制备纳米TiO_2及光催化研究
短句来源
     Theoptimum hydrolysis condition of hydrolyzing the protein of Silver carp by-product byAlcalase was: [E]/[S]=3.33%,pH=8.54, T=58℃,time=90min.
     得出最优水解条件为:[E]/[S]=3.33%、pH=8.54、T=58℃、水解时间为 90min。
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  “hydrolyzing”译为未确定词的双语例句
     Their activities of hydrolyzing raw starch were 240.5 U/g,207.6 U/g and 218.5 U/g,respectively.
     对生淀粉的酶活力分别为240.5 U/g,207.6U/g和218.5U/g;
短句来源
     After hydrolyzing the amount of starch was reduced to 5.0 mg/g from 186.0 mg/g.
     酶解后淀粉含量由186.0mg/g降至5.0mg/g以下。
短句来源
     The results indicated that chitosan with low molecular weightcould be obtained by hydrolyzing 4% chitosan with 0.01u/ml ChA chitosanase at 30℃, pH 5, using MHS equation η=1.02×10-4Mw1.27 to control reaction time.
     结果表明,在30℃、pH5、加内切酶ChA0.01u/ml的条件下降解4%壳聚糖,通过MHS方程η=1.02×10-4Mw1.27控制反应时间,可以得到低分子量的壳聚糖。
短句来源
     The Michaelis constant (K_m) of Na+-K+-ATPase hydrolyzing ATP was 0.42 mmol/L, not significantly different from that of Ca 2+ -Mg 2+ -ATPase (0.40 mmol/L).
     Na+-K+-ATPase的米氏常数(Km)为0.42mmol/L,最大反应速度(Vmax)为302.47nmol/(min.mg)。
短句来源
     The minimal inhibitory concentration(MIC) of 2h hydrolyzing peptide against Escherichia coli ATCC25922 and Staphylococcus aureus CMCC26801 was 1.2()mg/ml and 0.34()mg/ml respectively.
     2h水解液对大肠杆菌ATCC25922和金黄色葡萄球菌CMCC26801的最小抑菌浓度(MinimalInhibitory Concentration,MIC)分别是1.20 mg/ml和0.34 mg/ml。
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  相似匹配句对
     Microbial Hydrolyzing of Lignin
     木质素的微生物降解
短句来源
     Microbial Hydrolyzing of Chitin and Chitosan
     甲壳质及壳聚糖的微生物降解的现状
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  hydrolyzing
Phenylpyruvic acid derivatives are obtained by hydrolyzing aromatic Z/E azlactones.
      
The possibility of using xylanase preparations for hydrolyzing hemicelluloses in a non-bleached kraft pulp in order to facilitate its bleaching was studied.
      
The Respiratory Activity of Rhodococcus rhodochrousM8 Cells Producing Nitrile-Hydrolyzing Enzymes
      
Enzymes hydrolyzing 4-O-methyl-α-D-glucurono-β-D-xylan and sodium carboxymethyl xylan were also found in the culture liquid after 4 h of fungal growth.
      
Inulinase from Bacillus polymyxa 722, hydrolyzing a polyfructosan inulin, was studied.
      
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In connection with our work on “sulfabenzothiazoles”,several tertiary am- inophenyl-thioureas are required.The usual procedure of rearranging substituted ammonium thiocyanates failed to give satisfactory results.They were prepared, according to Douglass and Dains' procedure,by the reaction of benzoyl isothiocy- anate on p-ter.-amino-aniline followed by hydrolyzing the benzoyl thioureas formed.Among the products obtained,p-diethylamino-,p-N-piperidyl- and p-N- morpholinyl-thioureas and most of the intermediates...

In connection with our work on “sulfabenzothiazoles”,several tertiary am- inophenyl-thioureas are required.The usual procedure of rearranging substituted ammonium thiocyanates failed to give satisfactory results.They were prepared, according to Douglass and Dains' procedure,by the reaction of benzoyl isothiocy- anate on p-ter.-amino-aniline followed by hydrolyzing the benzoyl thioureas formed.Among the products obtained,p-diethylamino-,p-N-piperidyl- and p-N- morpholinyl-thioureas and most of the intermediates are new compounds.

用异硫氰化苯醯与对-叔胺基苯胺相作用,得苯醯对-叔胺基苯硫脲。再经水解,即得对-叔胺基苯硫脲。经由此法制得对-二甲胺基苯硫脲,对-二乙胺基苯硫脲,对-(N-六氢吡啶基)-苯硫脲,对-(N-四氢基)-苯硫脲。其中后三者都是新化合物。综合过程中的中间产物,多半也是新化合物。

Two oil soluble organic thioantimonials, antimony tri-dodecyl mercaptide and antimony tri-α-naphthylethyl mercaptide, have been prepared by modifying Clemenca and Leffler's procedure. Antimony tri-dodecyl mercaptide was easily obtained from dodecyl mercaptan and antimony trichloride in methanol. It was separated immediately from the solution as colorless crystals of melting point 45-46℃ (literature, 38-40℃). Antimony tri-α-naphthyl ethyl mercaptide was obtained from α-naphthylethylmercaptan and antimony trichloride...

Two oil soluble organic thioantimonials, antimony tri-dodecyl mercaptide and antimony tri-α-naphthylethyl mercaptide, have been prepared by modifying Clemenca and Leffler's procedure. Antimony tri-dodecyl mercaptide was easily obtained from dodecyl mercaptan and antimony trichloride in methanol. It was separated immediately from the solution as colorless crystals of melting point 45-46℃ (literature, 38-40℃). Antimony tri-α-naphthyl ethyl mercaptide was obtained from α-naphthylethylmercaptan and antimony trichloride in ether. After removing the solvent, drying, and then washing with methanol and ether, we obtained a white solid of melting point 69-70℃, while the product as given in literature was an oil or a waxy solid. α-Naphthylethylmercaptan was prepared by hydrolyzing the product obtained from α-naphthylethyl bromide and thiourea in aqueous solution. It was better to separate the intermediate, α-naphthylethyl isothiouronium bromide from the solution, and then to hydrolyze the purified product in alkaline solution under nitrogen atmosphere to obtain the pure mercaptan. Both thioantimonials have been proved to possess the therapeutic action in the treatment of experimental infections of schistosoma japonicum in mice.

我們制备了两种油溶陸三价锑剂,三(十二硫醇)锑及三(α-萘乙硫醇)锑。經对感染日本血吸虫病的动物疗效試驗,証明有作用,其毒性以三(α-萘乙硫醇)銻为低。在制造过程中,我們改进了十二硫醇、α-萘乙硫醇、三(十二硫醇)锑及三(α-萘乙硫醇)锑的制法,同时提高了它們的純度。我們得到的三(十二硫醇)锑熔点为45—46℃(文献为38—40℃);三(α-萘乙硫醇)銻的熔点为69—70℃(文献[6]为油狀或蜡狀固体)。

A mongst hundreds of analogues of chloramphenicol, which have so far beensynthesized and studied for their relationships between chemical constitutionand biological action, one concept is to curtail the hydroxymethyl group in the structure of chloramphenicol to form a simpler compound, 1-(p-nitrophenyl)-2-dichloroacetamido-ethanol (II), in which one asymmetric carbon being eli-minated. By so doing, however, the antibiotic activity is greatly reduced.We thought that the cause of loss of activity might be due...

A mongst hundreds of analogues of chloramphenicol, which have so far beensynthesized and studied for their relationships between chemical constitutionand biological action, one concept is to curtail the hydroxymethyl group in the structure of chloramphenicol to form a simpler compound, 1-(p-nitrophenyl)-2-dichloroacetamido-ethanol (II), in which one asymmetric carbon being eli-minated. By so doing, however, the antibiotic activity is greatly reduced.We thought that the cause of loss of activity might be due to the disappea-rance of chelating structure, which is regarded to be necessary for the exhibi-ting of antibiotic activity, between two hydroxyl groups as present in themolecule of chloramphenicol (I). In this investigation, therefore, the authorshave devised, on the one band, a compound, 1-(o-hydroxymethyl-p-nitrophenyl)-2-dichloroacetamido-ethanol (III), in which the hydroxymethyl group is retainedbut shifted from the propanediol side chain to benzene ring at the positionortho to the secondary alcoholic group so as to make the two hydroxyl groupsstill capable of chelating with one another. The second compound, 1-(o-hydroxy-p-nitrophenyl)-2-dichloroacetamido-ethanol (IV), is so designed that thehydroxymethyl group being changed to a hydroxyl group, which also shiftedto the same position as in compound III. Besides, 1-(o-methoxy-p-nitrophenyl)-2-dichloroacetamido-ethanol (VI), in which the hydroxyl group is masked bymethylation, has been prepared for the purpose of comparison. The results of antibacterial tests against both Gram-positive and Gram-negative bacteria showed that the activity of compound III, IV, VI was alsogreatly reduced as compared with that of chloramphenicol. This is in line withthe conclusion drawn by other investigators, who suggested that the prop-anediol moiety being vital to the exhibiting of antibiotic action of chloramphe-nicol. Compound III was prepared by a 11-step synthesis starting from o-amino-p-nitroethylbenzene (VII). The latter was converted to 2-ethyl-5-nitro-benzo-nitrile (VIII), m. p. 73.5°, yield 44%, by Sandmeyer reaction. The nitrile wasthen hydrolyzed to 2-ethyl-5-nitrobenzoic acid (IX), yield 90.5%; and subse-quently transferred to its methyl ester (X), b. p. 118--120°/1 mm, m. p. 36--37°,yield 90.5%, by usual way. The ethyl group of X was oxidized to acetyl groupby chromium trioxide to form 2-carbomethoxy-4-nitroacetophenone (XI), yield56.6%. α-Amino-2-carbomethoxy-4-nitroacetophenone hydrochloride (XIV) wasprepared by Delepine reaction, first by converting XI to α-bromo-2-Carbome-thoxy-4-nitroacetophenone (XII), followed by transferring the bromo-compoundto urotropine double salt (XIII), m. p. 147--149°, yield 46.5%, and finally byhydrolyzing the latter with hydrochloric acid. The amine (XIV), withoutisolating pure, was acetylated to α-acetamido-2-carbomethoxy-4-nitroacetophenone(XV), m. p. 168--l72°, yield 51.2%; which was then reduced by lithium aluminiumhydride to 1-(o-hydroxymethyl-p-nitrophenyl)-2-acetamido-ethanol (XVI), m. p.175--176°, yield 23.6%. The requiring product III, m. p. 136--137°, yield 66%,was obtained by substituting the acetyl group in compound XVII with dichlo-roacetyl group, first by hydrolyzing to free amine (XVII), m. p. 172--173°(dec),yield 72%, and treating the latter with methyl dichloroacetate. Compound IV, m. p. 143--144°, and compound VI, m. p. 94.5--96°, were bothprepared from the corresponding carbonyl compounds, α-dichloroacetamido-2-hydroxy (or methoxy)-4-nitroacetophenone (V, or XVIII) by Meerwein-Ponn-dorf reduction in, 13% and 47% yield respectively.

1.从隣氨基-对硝基乙苯开始,经过十一个步骤合成1-(隣羟甲基-对硝基苯)-2-二氯乙酰胺基乙醇。此化合物没有氯霉素的原有抗菌作用,因此说明氯霉素结构上的羟甲基移位后虽然仍可能有氢键钳环结构也不能维持原有抗生作用。 2.α-二氯乙酰胺基-隣羟(或甲氧基)-对硝基苯乙酮经异丙醇铝还原获得1-(隣羟(或甲氧基)-对硝基苯-2-二氯乙酰胺基乙醇,此二化合物的抗菌作用也小於氯霉素。

 
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