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Wherein, it comprises faujasite at 1-95%, fusion-resistant oxide at 1-90%, and active metal as 0.05-60%; the mol ratio as SiO2/Al2O3 of faujasite is 6-20, the zeolite XRD spectrum analysis proves it is Y-type zeolite, whose particles have sheet shape.

催化剂中含八面沸石1％-95％，耐熔氧化物1％-90％，活性金属组分0.05％―60％。其中八面沸石的SiO2/Al2O3摩尔比为6―20，沸石XRD光谱分析属于八面沸石中的Y型沸石，晶体颗粒形貌具有片状形貌。

The appropriate addition of formic acid (0.1 mol/L) into test solution was 10 mL.

通过加入甲酸作为焦性没食子酸试液的抗氧化保护剂，解决了由于试样的氧化而导致测定值不稳定的问题。

Compounds 5, 7 and 8 were obtained from the genus Fraxinus for the first time. Compound 4 showed remarkable antioxidative activity, which was higher than that of VE (35%).

讨论：化合物5，7，8为首次从该属植物中分离得到，其中化合物4在10-6 mol·L-1浓度能使脂质过氧化产物MDA的生成抑制50%以上，强于阳性对照药VE(抑制率35％)，具有显著的抗氧化作用。

The composition of melilite in the Ningqiang inclusions is near gehlenite, their AK values are mostly in the rang of 5 to 15 mol%.

宁强包体中黄〓石的成份接近于钙铝黄〓石，它们的AK值多数在5-15mol%的范围内。

The guanine plus cytosine content mol% of Pseudomonas cocovenenans subsp farinofermantans, Burkholderia gladioli and Burkholderia cocovenenans, which were similar in biochemical characteristics, were determined with Tm values method and HPLC method, and the comparative study of these two methods was discussed.

利用复性速率法和高效液相色谱法对生化性状比较相近的椰毒假单胞菌酵米面亚种、唐菖蒲伯克霍尔德氏菌和椰毒伯克霍尔德氏菌共7个菌株的鸟嘌呤和胞嘧啶摩尔百分含量%进行了测定，并对这2种方法做了对比研究。

The results showed that pectinase activity can retained up to 95.2% when prepared with 4.0% sodium alginate, 0.20 % glutaric acid, 0.10 mol/L CaCl2, 0.50 mL pectinase. The recovery activity of the immobilized pectinase was more than 76% after repeated 10 times.

结果表明，以4.0%的海藻酸钠为载体、0.20%的戊二醛为交联剂、0.10mol/L的CaCl2为凝聚剂、用酶量为0.50mL时所得的固定化果胶酶活力保存率可达95.2%，回收使用10次以后，酶的活力回收率为76.1%。

The passage 3 rat bone marrow mesenchymal stem cells were cultured at the density of 5×107/L in different groups, the induced group was added into conditioned medium containing 1×10-8 mol/L dexamethasone, 10 mmol/L beta-sodium glycerophosphate and 50 mg/L ascorbic acid at the same time of seeding, at 50%-60% confluence, at 85%-90% confluence, respectively.

将第3代大鼠骨髓间充质干细胞以5×107 L-1密度分组培养，诱导组分别于接种当时、细胞达50%~60%融合时、细胞达85%~95%融合时加入含地塞米松、β-甘油磷酸钠、维生素C的成骨诱导培养基诱导。

Degradation test in vitro was carried out in phosphate buffer solution (0.1M, pH7. 4) at 37 ℃. The buffer solution was changed daily. Degradation test in vivo was implanted the sample to subdermal in adult ICH rat in the scapular area lateral to the dorsal midline. At suitable time the samples were recovered. Molecular weight changes in surface layer and bulk of polymer sample were measured by GPC and weight loss was determined gravimetrically. It was found that the degradation behavior can be regulated by changing the composition of copolymers. The critical compositions from surface to bulk degradation behavior for PGCA, PLCA, PLMCA, PLDCA systems were 15-20, 20-30, 30- 40, 40 of mol percent GA or LA unit in copolymers, respectively. The degradation behavior of PGCA, PLCA, PLMCA, PLDCA systems were compared and analysed. Some factors influencing the degradation character, such as copolymer composition, hydrophobicity, crystallinity and enzyme affect etc. played important role.

体外实验中材料降解环境为37℃，0.1M，pH7.4磷酸缓冲溶液，每天换液，定期取样；体内实验中将聚合物试样埋置于ICH小白鼠背部肩胛骨皮下部位，定期处死小鼠，取样，将体内体外样品进行重量损失及试样内外层分子量变化测定，分析各聚合物试样降解行为特性，实验结果证明，改变共聚物组成，可以调节各聚合体系降解行为特性，对PGCA，PLCA，PLMCA，PLDCA共聚体系，交酯摩尔百分含量15-20％，20-30％，30-40％，40％分别为各体系内降解行为特性由表面降解型向本体降解型过渡的临界转折点，交酯含量较低的聚合物不同程度地表现表面降解行为特性，论文对各共聚体系体内外降解行为作了分析对照，例如共聚物组成对材料降解速度与降解行为的影响；生物体内酶对降解行为的影响；材料亲疏水性，聚合物链段结晶行为及碳酸酯结构对材料降解行为的影响等，得出交酯/环碳酸酯共聚体系降解行为一些共性和规律。

In 0.015 mol/L NaOH medium, AuCl4(superscript -)reacted with hexadecyl trimethyl ammonium bromide, forming water soluble CTMAB-AuCl4 complex that exhibited a weak absorption peak at 400 nm. In the presence of hydrazine, the reaction produced orange-red nanogold particle and exhibited a surface plasma resonance absorption peak at 520 nm.

在0.015mol/LNaOH介质中，氯金酸根离子AuCl(上标-下标 4与阳离子表面活性剂十六烷基三甲基溴化铵反应生成水溶性的CTMAB-AuCl4缔合物，在400nm处产生一个很弱的吸收峰，当有肼存在时，反应生成橙红色的金纳米粒子，在520nm处出现一个表面等离子体共振吸收峰，从而可实现废水中微量肼的分光光度测定。

This effect was observed clearly at final concentration between 1 and 10μ mol/L after treating for 24 hours. We concluded that the possible mechanisms of hydroquinone bleaching hyperpigmented skin were through its inhibition of tyrosinase activity at lower concentration and its cytotoxicity at higher one.

提示18α-甘草酸双胺盐、熊果苷的皮肤脱色作用机制与氢醌可能不同，后者低浓度时以抑制酪酸酶活性为主，高浓度时主要是细胞毒，且细胞早期的损伤部位可能发生在树状突。18α-甘草酸双胺盐能否成为一种无细胞毒酪氨酸酶抑制型皮肤脱色剂有待进一步临床加以验证。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。