查询词典 free-standing system

Free Bridge Free Contact Freecredit Free Cross Stitch Pattern Free Directv Satellite System Freedom ...

自由桥免费联系freecredit免费交叉缝合模式免费的DirecTV卫星系统的自由。。。

The free radical scavenging properties of six Aloe species are to be investigated in some modified chemical system. The antioxidant was purified by silica column and thin layer chromatography and analyzed by HPLC. A fraction was purified from A. brevifolia Mill showed the most effective scavenging activities on 〓 and ·OH (66. 01% and 38. 98% respectively). With the analysis of IR spectrum, UV spectrum and mass spectrum, the structure of FA was identifed as 8-C-D-glucopyranosyl-2- [2-hydroxy] propyl-5-methyl-7-hydroxychromone. Its scavenging activity on free radicals is higher than that of aloe-emodin. Its antioxidant activity may be due to the phenoxyl on glucosyl chromone which can be react with free radicals and form relatively stable free radicals.

本研究利用分别产生超氧阴离子自由基和羟自由基的化学模型体系研究比较了不同品种芦荟提取物的清除活性氧自由基的抗氧化作用，进一步利用硅胶柱结合薄层层析法和反相高压液相色谱法，从短叶芦荟叶子中首次分离了具有较强自由基清除能力（超氧阴离子自由基和羟自由基清除率分别为66.01％和38.98％）的成分FA，利用红外光谱、紫外光谱和质谱等仪器分析结果推断出该活性成分的分子结构为8-C-吡喃葡萄糖-2-[2-羟基]-丙基-5-甲基-7-羟基对氧萘酮，它的自由基清除能力高于芦荟大黄素，是一种天然抗氧化剂。

From the experiment discovered for the first time the dimethyl ether may substitute CO to take the chain-carrying agent of the peroxy free radical chemistry amplifier system, and optimized the CH_3OCH_3-NO-HO_2 chemistry amplifying system determination condition, the CH_3OCH_3 best density is 1.876 ppmv, the NO best density is 1.3ppmv, and obtained this method chain length CL=124, 5 parallel determinations densities of HO_2 are the 44.0pptv, the relatively standard deviation is smaller than 4%; Although chemistry box model computed result indicated the dimethyl ether, the ethene, the propene and the ethanol all can take the chain-carrying agent of the peroxy free radical chemistry amplifier system, and their simulation chain length all grows up compared to the CO-NO-HO_2 chemistry amplifying systems, but experiments proved the ethene, the propene and the ethanol have not suit the chain-carrying agents.

首次从实验上发现二甲醚可以替代CO作为过氧自由基化学放大系统的链传递试剂，并优化了CH_3OCH_3-NO-HO_2化学放大系统的测定条件，CH_3OCH_3的最佳浓度是1876ppmv，NO的最佳浓度为1.3ppmv，并得到了这一方法的链反应长度(CL=124)，5次平行测定浓度为44.0pptv的HO_2自由基，相对标准偏差＜4％；虽然化学盒子模式计算结果表明二甲醚、乙烯、丙烯和乙醇都能作为过氧自由基化学放大系统的链传递试剂，并且它们的模拟链长都比CO-NO-HO_2化学放大体系的链长大，但是实验证明乙烯、丙烯和乙醇不适合作为过氧自由基化学放大系统的链传递试剂。

2DRG co-cultured with sciatic nerve undergoing Wallerian degeneration for 14days in vivo in serum free DMEM/F12,1sciatic nerve segment was added into co-culture system at the first moment,the axons were strong and straight and could adhered to each other,and the number of axons dramatically reduced compared with that of DRG cultured alone in serum free medium.2DRG cultured in serum free DMEM/F12for 4days,then the sciatic nerve segment was added into the culture system for 3days,the axons became straight and part of them adhered to each other.

分别在无血清和有血清的条件下将新生鼠的背根神经节和体内变性14天的大鼠坐骨神经段进行联合培养作为实验组，并以在相应条件下单独培养的DRG的轴突的生长情况作为对照组来观察比较轴突的生长情况。

The Company in November 2002 has been made SGS/ISO9001: 2000 international quality management system certification; in 2003 in response to environmental requirements SONY have passed the SGS certificate of heavy metals to Pb-free requirements of Cadmium-free manufacturing process; in early 2004 to obtain LED Lighting Product of the CE certification and substantial to the overseas markets, on the basis of the formation of a self-evolving system of chemicals management system, in order to to provide customers with quality products and perfect service, and has for the general taxpayers are allowed to issue 17% value-added tax invoices, the spirit of continuous improvement, and constantly enterprising spirit to perfect every detail, with excellent quality and first-class after-sales service with you to create brilliant.

本公司于2002年11月已取得SGS/ISO9001：2000国际品质管理体系认证；于2003年为响应SONY环保要求已顺利通过SGS重金属合格证书，达到无铅无镉制程要求；于2004年初取得LED灯饰产品的CE认证并以大量推向海外市场，在此基础上形成了自我不断完善的品管理体系制度，为给顾客提供优质的产品和完善的服务，并已办理了一般纳税人可开具17%增值税发票，本着持续改善、不断进取的精神去完善每一个细节，以优良的品质及一流的售后服务与你共创辉煌。

We will show the world once again the resilience of America's free enterprise system.

我们将向世界再次展示，美国自由企业制度的坚韧性。

We will show the world once again the resilience of Americas free enterprise system.

我们将向世界再次展现美国自由企业制度的复兴。

We will show the world once again the resilience of America's free enterprise system.

凭借着我们的决心和辛勤工作，我们将美国经济重新拉回到增长的车道上。

The President, like Smith, believes in the free enterprise system.

总统，和史密斯一样，相信自由的企业制度。

METHODS Xenopus leavis females were injected with HCG, eggs were harvested next morning and dejellied by 2% cysteine, from which the Xenopus leavis egg cell free translating system was prepared.

而基因功能的研究离不开基因的表达，这就迫切需要一种操作简便，适用范围广的表达工具来表达有功能的蛋白质。方法非洲爪蟾注射HCG催卵，2%半胱氨酸去胶膜，高速离心制备卵提取物，即为非洲爪蟾卵非细胞翻译体系。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。