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转化率
    By adding activated charcoal into the bioreactor,the conversion rate was raised to 1.09%,the maximum vanillin concentration was 136.48 mg/L in receiving solution,and vanillin amounted to 96.77% of the total area of the HPLC peaks.
    活性炭优化后的转化率为1.09%,下游萃取液最高质量浓度为136.48 mg/L,香草醛的HPLC峰面积比为96.77%。
    Polystyrene film encapsulated on the surface of flaky aluminium of micro-particles was prepared by in situ polymerization. The conversion of monomer(C%),the percentage of grafting(PG%),and the grafting efficiency(GE%) were discussed.
    通过原位聚合法,在超细片状铝粉表面聚合包覆聚苯乙烯薄膜,讨论了聚苯乙烯的转化率(C%)及其在铝粉表面的接枝率(PG%)、接枝效率(GE%)随反应条件的变化趋势,并采用FTIR、TEM对样品进行了表征,最后对复合粒子进行了TG-DTA分析。
    The experimental data show that when the initiator is ammonium ceric nitrate and the inter-crosslinker is divinylbenzene in the preparation of polyurethane-polyether,the amount of initiator is 1.00% of total monomers mass,the ratio of polyurethane-polyether to acrylic resin is 15 ∶1,the resins have high conversion and the coating prepared has excellent hydrophilicity.
    实验结果表明,在聚氨酯-聚醚树脂的制备中,用硝酸铈铵作引发剂,用二乙烯苯作内交联剂,在丙烯酸树脂的制备中,引发剂量为单体总质量的1.00%,聚氨酯-聚醚树脂与丙烯酸树脂的质量比为15∶1,制备的树脂转化率高,涂料亲水性能优异。
    The optimum conditions were:reaction temperature 210℃,reaction time 2 h,NaOH dosage 40%(W/W),ratio of oil to water 1∶2(W/W),and the conversion yield under these conditions was 98.3%.
    确定的最佳条件为:反应温度210℃,反应时间2 h,加碱量为油重的40%,油水比1∶2,在此条件下转化率为98.3%。
    The results indicate that the yields of conversion and extraction reach the maximum value, 88.52% and 52.52%, respectively, at the mole fraction of ethanol, 0.21.
    实验结果表明,在乙醇的摩尔分数为0.21,达到乙醇-水二元系统的临界条件,玉米秸秆的转化率和萃取率均达到最高值,分别为88.51%,52.52%。
    Cultured at the original fermentation conditions for 72h, the hydrocortisone conversion rate and yield ratio were 63.05% and 53.3%, respectively, with the RSA addition content 1.0g/L.
    RSA投料浓度为1.0g/L时,在未优化条件下发酵72h,氢化可的松转化率达到63.05%,氢化可的松对RSA的收率达到53.3%。
    Based on the optimized fermentation conditions and the optimal RSA addition method, the hydrocortisone conversion rate was 74.88% with the RSA addition content at l.
    以适宜摇瓶分批发酵条件为基础,对氢化可的松高产菌株KA一91进行了7L罐分批发酵试验,发酵周期68h,RsA投料浓度为1 .09几时,氢化可的松转化率达到77.92%。
    Under this condition, the conversion of the reaction reached 50% and the ee_p reached 99% after 36 h.
    在此条件下,反应36h左右底物转化率接近50%,ee_p可达99%以上;
    Shake flask fermentation experiment under optimized conditions reached the yield of 22.6g/L exopolysaccharide, conversion efficiency of 45.2% and broth viscosity of 2.01 Pa.
    摇瓶发酵的产量22.6g/L,碳源转化率45%,产品粘度2.01Pa.
    It was found that theoptimum conditions for high conversion emulsion polymerizationunder 600C were: composite emulsifier 8.5%, the anionic/nonioncemulsifier quality ratio 1:2, redox initiator 0.2%, (I-f SOi/S~O8 ) molarratio 0.66. The copolymer structure was studied with lnfra-RedSpectrometry and DDV-III-EA Rheovibron Viscoelastorneter.
    应用正交设计和均匀设计实验方法得出:当乳化剂用量为8.5%,阴离子/非离子乳化剂质量比为1:2,引发剂用量为0.2%,还原剂/氧化剂摩尔比为0.66时,采用间歇法聚合工艺得到了高转化率的性能良好的乳液,采用红外光谱和动态力学粘弹谱对乳液共聚物进行了表征。
    Firstly, by means of Uniform Design and stepwise regression, the culture medium of high cells-concentration was optimized to be: yeast extracts 6.8g/L, with a better conversion of 88%.
    首先,采用均匀设计和多元逐步回归方法对高细胞密度微囊化发酵培养基进行优化研究,得到仅含6.8g/L酵母浸膏的优化培养基配方。 与文献中针对游离发酵的优化培养基相比,新的培养基配方使木糖转化率从83%提高到88%,效果显著。
    Fe2"1" concentration is 1.0~1.5mol/L, amount of NaClO3 is 1.05 times of NaClO3 theoretical amount, reaction temperature is 60~65癈. The conversion rate of Fe2+ to Fe3+ is 99% under the above reaction factors.
    (1)Fe~(2+)氧化阶段,Fe~(2+)浓度为1.0~1.5mol/L、NaClO_3的用量为理论用量的1.05倍、反应温度为60~65℃时,在该条件下,Fe~(2+)的转化率达到99%。
    After the products were analyzed by GC, the results were showed : (1) the condensation of citral with acetone, conversion of citral, synthetic and refined yields of pseudoionone were 98% , 95.4% and 75.5% respectively, so total yield of condensation process was 72% ;
    产品经GC分析,结果表明:(1)柠檬醛与丙酮的缩合反应,柠檬醛转化率、假性紫罗兰酮合成及精制收率分别为98%、95.4%、75.5%,缩合工段总收率为72%;
    the cylization of pseudoionone, conversion of pseudoionone, synthetic and refined yields of P-ionone were 99%,95.5% and 69% respectively,so total yield of cylization process was 66% .
    假性紫罗兰酮的环化反应,假性紫罗兰酮转化率、β-紫罗兰酮合成及精制收率分别为99%、95.5%、69%,环化工段总收率为66%。
    Pyruvate production 39.6g/L and conversion rate 49.5% were achieved after 48h batch fermentation in shake flask on the super conditions.
    在优化条件下经60h摇瓶分批发酵,丙酮酸产量39.6g/L,转化率49.5%。
    Meanwhile, the carbon and nitrogen ratio was maintained constantly, namely 25: 1. Consequently, pyruvate of 61.9g/L, conversion rate of 53.8% and productivity of 1.29g/(L-h) were achieved after 48h fermentation in 5L bioreactor.
    1不变,经48h 5L罐发酵,丙酮酸产量达61.9g/L,转化率53.8%(总糖浓度115g/L),生产率1.29g/(L·h)。
    The maximum levels were yield 67.8g/L, conversion rate 49.4%, productivity 1.08g/(L-h) after 63h feed-batch fermentation on conditions that total glucose concentration was 140g/L.
    国外最高水平为:发酵时间63h,产量67.8g/L,转化率49.4%,发酵方式3L罐分批补料,生产率1.08g/(L·h)。
    On the conditions above,L-lactic acid productivity and the crude Sweet Potato Starch conversion rate were 120 g/L and 80%, respectively.
    在最适发酵条件下,该菌株的摇瓶发酵L-乳酸累积量可达120g/L,对原淀粉转化率为80%,最高生物量达6.5g/L。
    The hydrocortisone conversion rate was 74.88% based on the improved fermentation process and the optimal RSA adding method while the RSA addition content 1 .0g/L.
    采用改进工艺和最适投料方法,RSA投料浓度为1.0g/L时,氢化可的松转化率达到74.88%。
    Temperature, molar ratio of sugar to acid, pH, initial water activity, dosage of lipase, molecular sieve and rotation speed were investigated, the optimum conditions as follows: 45 C , sugar to acid 1:3, pH7.5, initial water activity 0.75, dosage of lipase 50mg, 1g molecular sieve, rotation speed 150r/min, after reaction for 32h, conversion of lauric can reach 69%.
    同时对如温度、底物摩尔比、pH值、加酶量、初始水活度、分子筛添加量、摇床转速等进行了研究,得出最佳反应条件为:45℃、糖酸摩尔比1:3、pH7.5、加酶量50mg、初始水活度0.75、分子筛1g、转速150r/min,反应32h后月桂酸转化率达69%。
 

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