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RESULT: In vitro,the IC_(50) of Que of inhibiting the production of lipid peroxides in homogenates from rat heart,brain,and CCl_(4) damaged liver in mice and H_(2)O_(2) induced hemolysis is 0.4×10~(-4),0.2×10~(-4),0.5×10~(-4),0.3×10~(-4) mol/L,separately,while that of TP is 0.7×10~(-4),7.8×10~(-4),1.1×10~(-4),0.6×10~(-4) mol/L,separately.

结果 ：在体外，Que和TP均可剂量依赖性地抑制Fenton反应导致的大鼠心、脑匀浆和CCl4毒化小鼠肝匀浆中过氧化脂质的生成和H2 O2 诱导的红细胞溶血：Que的IC50 分别为：0 4× 10 -4，0 2× 10 -4，0 5× 10 -4，0 3× 10 -4mol/L ；TP的IC50 分别为：0 7× 10 -4，7 8× 10 -4，1 1×10 -4，0 6× 10 -4mol/L。

Kcal/mol and one between 32 and 49℃ with Ea=2. 44 Kcal/mol.

在13-32℃，反应的活化能为7.23 Kcal／mol。

Employing CuI(5 mol%), N,N-dimethylglycine hydrochloride(10 mol%) and K_2CO_3(2 equiv.) in refluxing THF as the optimized reaction conditions,the four-membered 4-alkylidene-2-azatidinones could be efficiently synthesized.

当以3-溴-3-N-苯基-丁烯酰胺为底物，在5 mol%CuI为催化剂，10 mol%N，N-二甲基甘氨酸盐酸盐为配体，2当量K_2CO_3作碱，THF回流的反应条件下，可以高效的合成2-亚甲基-4-氮杂环丁酮类化合物。

As support, Agarose can benot only used in normal condition, but also in denaturalization (for example, 6 mol/Lhydrochloric acid carbamidine or 8 mol/L urea). Herein, the preparation of IMACmatrixes were conducted using agarose as support, carboxymethylated aspartate as chelating ligand and Co~(2+) and Ni~(2+) as chelating center ions.

本实验用琼脂糖作为基质，选用四配位，与金属离子有较强作用力的羧甲基天冬氨酸为配基，以Co~(2+)、Ni~(2+)作为螯合金属离子，合成了一系列金属螯合亲和色谱填料，并对其蛋白质分离性能进行了研究。

The sensor show Nernst response for 20× 10〓～50×10〓mol/L nicotinic acid with detective limit of 2.0×10〓mol/L, other advantages of the sensor include resistance to poison、 fast response et al..

用电化学方法制备的烟酸-PPy化学传感器对2.0×10〓～5.0×10〓mol/L浓度范围内的烟酸有良好的Nernst响应，传感器具有选择性好、响应快、制备容易等优点。

In phosphate buffer solution at pH 5.0, this electrode showed near Nernst response to SCN(superscript -) in the range of l.0×10^(-1)-1.6×10^(-6) mol/L. The slope was-55.4 mV/pSCN(superscript -)(26℃) and the detection limit was 6.3×10^(-7) mol/L.

在pH 5.0磷酸盐缓冲溶液中，该电极对SCN在l.0×10^(-1)~1.6×10^(-6)mol/L浓度范围内呈近能斯特响应，斜率为－55.4 mV/pSCN (26℃)，检出限为6.3×10^(-7)mol/L。

The enhancement factor of IR absorption of CO on nm-Ru/GC electrode has been measured at 33 in 0.1 mol.L－1 NaOH solution,which is more than 2 times larger than the value determined in a 0.1 MH2SO4 solution.

测得在碱性溶液中吸附态CO的红外吸收被增强了33倍，其增强因子是酸性溶液中的两倍左右。

Under the optimal conditions 1.5×10~(-3 mol/L of 22, 1.0 MPa of O_2, 120℃, 20 h, the conversion of ethylbenzene was 37.8%, and the selectivity for acetophenone and 1-phenylethynol was 82.5% and 13.5% respectively.

在22浓度为1.5×10~(-3)mol／L，氧气压力为1.0 MPa，120℃反应20 h，乙苯转化率为37.8％，苯乙酮的选择性为82.5％，1-苯基乙醇的选择性为13.5％，锰配合物23次之。

Under optimal conditions, oxidation of ethylbenzene into acetophenone under 1 atm O2 and 1 mol% NHPI reach to 64% yield.

在最佳的催化状态下，苯乙烷能在1 atm的氧气、1 mol% NHPI与轴向配位基为吡啶的紫质修饰二氧化钛共催化下，氧化成苯乙酮，并得到64%的产率。

Enzyme solution was extracted by 0.02 mol/L、pH4.8 acetum at the room temperature for 3 h.

纤维素酶和果胶酶主要由霉菌通过固态发酵法来生产，其影响因素较多。为了获得高

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。