查询词典 ethanol

The results showed that in acetone and ethanol, solubilities of 3, 28-di-O-glutaryl-betulin were 33.52 and 22.65 times of those of betulin respectively; In water, solubility of 3, 28-di-O-glutaryl-betulin was 0.0021 g (100 mL water), and in PBS, solubility of 3, 28-di-O-glutary-betulin was 0.0015 g (100 mL PBS), the hydrophilicity of 3, 28-di-O-glutaryl-betulin was significantly increase.

结果表明，在丙酮和无水乙醇中，桦木酐戊二酸酯的溶解度是桦木醇的33.52和22.65倍；在水中，桦木醇戊二酸酯的溶解度为0.0021g（100mL水）；在PBS中，桦木醇戊二酸酯的溶解度约为0.0015g(100mL PBS)，目标产物的亲水性有了显著的改善。

Its structure was characterized by FT-IR, 1H NMR and MS. Solubility data of betulin and 3, 28-di-O-glutaryl-betulin in acetone, ethanol, water and phosphate-buffered saline (PBS, pH value 7.4) were determined by equilibrium method.

采用FT-IR、1H NMR和MS对产物进行结构表征，并且选用平衡法测定了桦木醇和桦木醇戊二酸酯在丙酮、无水乙醇、水和磷酸盐缓冲溶液（PBS， pH值7.4，）等不同溶剂中的溶解度。

MATERIAL AND METHODS: Betulin was isolated from dry powder of the bark of silver birch by using ethanol circumfluence, decompress concentration and methanol-chloroform recrystallization.

材料与方法：取一定量的白桦树皮干粉，通过乙醇回流，减压浓缩和甲醇-氯仿重结晶等步骤获得白桦酯醇纯品。

The total contents of phenol compounds of fresh Boehmeria nivea root was 200.24± 0.93 mg/g, which is 4.5 times higher than ethanol extracts of fresh Boehmeria nivea leaf, and its ability to remove ABTS free radical is 7.4 times higher than that of fresh Boehmeria nivea leaf, which is one third of Trolox's ability to remove free radical. Antioxidant components of hot water extracts of Boehmeria nivea leaf exhibited 55 and 67% lower than that of fresh leaf respectively.

sulfonic acid］和DPPH(α，α-diphenyl-β-picrylhydrazyl)自由基为最高，其次为热水萃取物和冷水萃取物，而新鲜苎麻根乙醇萃取物总酚类含量为200.24 ±0.93 mg/g，约高於新鲜苎麻叶乙醇萃取物的4.5倍，其清除ABTS自由基能力是新鲜苎麻叶乙醇萃取物的7.4倍，约为维生素衍生物的1/3倍。

The first part of this research was to investigate anti-oxidant abilities of Boehmeria nivea leaf and root. Different extraction methods, drying conditions as well as far infrared were applied to measure their effects on anti-oxidant abilities of Boehmeria nivea leaf and root. Results showed that 95% ethanol extracts of fresh leaves and roots demonstrate the highest anti-oxidant components(total contents of phenol compounds and flavonoids)and scavenging abilities free radical scavengingABTS(2,2'-azinobis［3-ethylbenzothiazoline-6- sulfonic acid］and DPPH (α,α-diphenyl-β-picrylhydrazyl) free radical , followed by hot water and cold water extraction.

本研究第一部份拟针对苎麻叶与根探讨其抗氧化能力，并以不同萃取方法、不同乾燥处理方式及经远红外线照射对其抗氧化能力之影响，研究结果显示，在不同萃取方法中，新鲜苎麻叶与根皆以95%乙醇萃取物的抗氧化成分及抗氧化能力清除ABTS(2，2'-azinobis［3-ethylben-zothiazo-line-6

Unless most subsidies for renewables are phased out once a cap-and-trade system is in place, says Paul Bledsoe, a former adviser on energy to the Clinton administration, they risk creating a boondoggle akin to the proliferation of incentives for corn ethanol.

克林顿政府时期的一名能源顾问 Paul Bledsoe 表示，除非在限额交易体系实行之时，可再生能源获得的补贴也逐步消除，否则后果将会与猛增玉米乙醇刺激措施的结果相似，都是在做浪费时间金钱的无用功。

Unless most subsidies for renewables are phased out once a cap-and-trade system is in place, says Paul Bledsoe, a former adviser on energy to the Clinton administration, they risk creating a boondoggle akin to the proliferation of incentives for corn ethanol.

Paul Bledsoe表示，除非在限额交易体系实行之时，可再生能源获得的补贴也逐步消除，否则后果将会与猛增玉米乙醇刺激措施的结果相似，都是在做浪费时间金钱的无用功。

The synthesis of l-(4-acetylaminophenyl)-2-bromo-1-propanone was discussed, and the mechanism and possible factors were analyzed. Hence the routine was determined, in which l-(4-acetylaminophenyl)- 1-propanone was reacted with Bromine dissolved in ethanol, so that the a -bromination can be carried on, resulted in the yield of up to 70.4%.

探讨了1-(4-乙酰胺基苯基)-2-溴代-1-丙酮的合成方法，分析了反应机理和影响因素，确定将1-(4-乙酰氨基苯基)-1-丙酮溶解在乙醇中以溴的乙醇溶液进行α-溴化的合成路线，产率可达70.4％。

Bis-(2,3-dibromo-4,5-dihydroxy-phenyl)-methane is a natural bromophenol with significant inhibition against PTP1B IC_(50=2.4μmol/L, which was isolated from the ethanol extract of red algae Rhodomela confervoides.

双-(2，3-二溴-4，5-二羟基苯基)-甲烷是从松节藻醇提物中分离鉴定出的溴酚类化合物，体外活性筛选发现，它具有极强的蛋白酪氨酸磷酸酶1B(PTP1B)抑制活性IC_(50=2.4μmol/L。

The results showed that ascorbic acid oxidase activity in the flesh of 'brumal Jujube' became significantly higher than in pericarp with the development of maturity; but these activities of peroxidase , Polyphenoloxidase and phenylalanine ammonia-lyase in flesh were lower than in pericarp . During the development from green to half-red then to red, the lignin and fibre contents in pericarp gradually increased higher than in flesh; ethanol content also increased , acetaldehyde content reached to a peak during the red maturity stage and then declined.

随着贮期的延长，冬枣果肉中乙醇和乙醛含量增加，乙醇发酵关键酶的活性逐渐升高；气调贮藏延缓了果实中乙醇和乙醛的积累，抑制了PDC和ADH的活性，显著提高了果实的贮藏品质；说明气调贮藏延缓了果实的乙醇积累；但CA_1比CA_2促进果实乙醇积累的作用较明显，表明冬枣对高浓度CO_2较敏感，这可能是枣果实不耐高CO_2的原因之一。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新