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活化能

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The results show that in the presence of NaHCO3 as base and DMF-H2O (volume ratio 2∶1) as solvent, the complex could catalyze not only iodobenzene but also non-activated bromobenzene quantitatively at 90 ℃ without the inert gas protection, and furthermore the catalyst could be recovered and reused more than eight times.

结果表明,在没有惰性气体保护的情况下,以NaHCO3作碱,以DMF水溶液(体积比为2∶1)作溶剂,在90 ℃时,该配合物不仅对活性较高的碘代苯能够定量地催化,对未活化的溴代苯也能定量地催化,并且催化剂能够回收再利用8次以上。

Treatment with amydae carapax decoction could resist lipid perioxidation, improve pathological function of liver tissue, improve liver function and regulate cell factor level. Thus it could inhibit hepatic stellate cells activated multiplication and extra cellular matrix synthesis and secretion, promote ECM degradation and significantly prevent and treat liver fibrosis in rats.

鳖甲煎煮液能有效地预防和治疗大鼠肝纤维化,效果显著,其作用机制可能是通过抗脂质过氧化、改善肝组织病理、改善肝功能、调控细胞因子水平等而发挥抑制肝星状细胞活化增殖及细胞外基质合成分泌、促进ECM降解吸收等综合作用,阻断和治疗肝纤维化。

The cheap and easily available nonmetal selenium catalyst possesses both efficiency to catalytically activate carbon monoxide and the function of phase-transfer catalysis. What is more, it can be recycled.

价廉易得的非金属硒作催化剂不但具有良好的催化活化CO的性能及反应过程相转移催化特性,而且能循环使用。

The experiments showed that polypeptides were formed by self-assembly of N, O- bis amino acids with the assistance of o-phenylene phosphoro- chloridate. Three steps were involved in the self organization reactions, i.

侧链无官能团的N,O-二-α-氨基酸在O,O-亚苯基磷酰氯辅助下能自组装得到系列2~n聚寡肽,其自组装成肽过程大致分为三步:氨基酸的活化、肽链的延长和链反应终止。

High magnetic filter: Use KLQ unique high magnetic field E + E, complexification of magnet technology, so that has been activated small molecules of water with stronger activity, more time to maintain the water activity that was called not reducing property small molecules of water , constant magnetic field of 10,000 gauss systems, instantaneous release of 9600-10300 gauss of magnetic field lines, so that an orderly arrangement of small molecules of water take of various trace elements needed by human body,delay cell senescence, activation of T cell growth, modulation of human blood fat, improve body microcirculation, reducing blood vessel wall fat deposition, improve immunity, have a preventive of hyperlipidemia and other kinds of chronic diseases, diabetes, high blood pressure.

高磁化过滤器:使用KLQ独特的E+E高磁场,复化磁钢技术,使已经活化的小分子团水活性更强,具有磁记忆能,更长时间维持水的活性被称为不还原的小分子团水,10000高斯生物恒磁场系统,瞬间释放9600-10300高斯的磁力线,使小分子团有序排列摄取人体所需的各种微量元素,延缓细胞衰老,激活T细胞生长,调节人体血脂,改善身体微循环,减少血管壁脂肪沉积,提高免疫能力,可保健肝胃具有预防高血脂高血压糖尿病等种慢性疾病。

Moreover, expression of a constitutively active form of Notch4 in mammary epithelial cells inhibits epithelial differentiation and leads to tumor formation in this organ.

再者,乳腺上皮细胞中一种持续活化形式Notch4的表达也能抑制上皮细胞的分化,从而导致肿瘤形成。

Thorough is pure is the beautiful flesh important step, Xantia deep cleaning oil can the dismantle dirty air and the color, specially has the acne the pore spot, has the in-depth clean effect, Glycol, Algae Extrac and Corallina Officinalis Extract.The tiny member can instantaneous seep 〝the base first floor〞to achieve activates the flesh, highly effective guarantees the wet function banana plant oil, Aloe oil level approximate human body sebum natural to guarantee the wet protective layer, after prevented washes the face the moisture content to drain.

彻底洁净是美丽肌肤的重要步骤,Xantia深层洁颜油能够卸除脏空气及彩妆污垢,特别是有粉刺的毛孔部位,具有深层清洁的效果,海洋微量元素、海藻萃取液、珊瑚萃取液微细的分子能瞬间渗透到「基底层」达到活化肌肤、高效保湿功能;荷荷芭油、芦荟油形成一层近似人体皮脂的天然保湿防护膜,防止洗脸后水分流失;加入镇定、舒缓肌肤的薰衣草精油,达到深层清洁、去除角质、温和洗净、舒缓肌肤等四大功效。

Taxol have been used in clinic therapy of breast cancer. Generally speaking, taxol can accelerate the-assemble of microtubule, stabilize microtubule from its discomposing, make mitosis stagnate at G2/M, sequentially interdict the normal mitosis and proliferation of cells, induce cell apoptosis; Besides, a direct function of taxol on cell signal and gene expression, activations of apoptosis genes and expression of proteins can induce apoptosis.

紫杉醇已应用于乳腺癌的临床治疗,一般认为紫杉醇能增强微管聚合,稳定微管防止解聚,使有丝分裂停滞在G2/M期,从而阻断正常的有丝分裂和细胞增殖;除此之外,紫杉醇可以直接在细胞信号和基因表达上发挥作用,活化多种凋亡相关基因的表达,从而引发细胞凋亡。

AAⅠcan bind covalently to the exocyclic amino group of purine nucleotides to form AAⅠ-DNA adduct. LC/MS/MS is a practical tool to detect AAⅠ-DNA adduct.

AAⅠ活化后能与腺嘌呤形成AAⅠ-DNA加合物,LC/MS/MS技术能够决速力便准确地检测AAⅠ-DNA加合物。

The activation energy barrier is low,it is 79.84 kJ., mol- 1 and 62.68 kJ., mol- 1 respectively,both the elimination reactions under normal temperature and pressure are entropy increase,exothermal and Gibbs free energy Δ G

反应活化势垒较低,分别为79.84kJ。,mol-1和62.68kJ。,mol-1,且二者反应在常温常压下是熵增、放热、吉布斯自由能ΔG

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推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。