时基

It is found that the initial pH,ρ(H_2O_2) and ρFe~(3+ of the solution have significant effects in this photooxidative process. The removal percentage of COD_ is higher under solar irradiation than under UV irradiation. Under the selected conditions, using solar/H_2O_2/ferric oxalate complexes to treat the landfill leach has good efficiency. landfill leach ; ferric oxalate ; photocatalysis

已有的研究表明，Fe3+羧酸盐络合物具有光催化降解有机物的性能[1-3]；当草酸铁络合物体系中存在一定量的H2O2时，在太阳光或紫外光照射下，可发生类Fenton反应产生羟基自由基[4]，而草酸铁络合物可在一定程度上循环利用，使Fe3+和C2O2-4可以重新形成草酸铁络合物：2[Fe(C2O4)n](3-2n)hν2Fe2++(2n-1)C2O42-+2CO2(1)Fe2++H2O2

Finally, we established rat model of PF induced by bleomycetin, and observed the interventional action of phenol total base to model. The analysis of experimental result including pathematologic and tissue biochemical indicator showed phenol total base of plumula nelumbinis have some therapeutic action to rat model of PF induced by BLM.

通过病理学观测及组织生化指标的检测(SOD、MAD、GSH一PX、Hyp)，说明莲子心酚性总碱对博莱霉素致大鼠肺纤维化有一定治疗作用，可能的作用机制：降低肺纤维时胶原含量；抑制肺成纤维细胞的增殖；抗自由基和抗脂质过氧化作用及提高了机体内GSH一Px含量。

When it surpasses the removal ability of antioxidation , it .causes chain reactions of peroxidation, resulting in serious damnification of organism membrance and microcycle, even collapse. Free radicals and product of their metabolism make polyamylose divide chains, unsaturated fat acid peroxide, protein tangle, RNA and DNA rupture and mutate.

当其超出体内抗氧化酶的清除能力时，引起脂质过氧化链式反应，导致生物膜及微循环严重损伤，甚至崩溃，自由基及其产物使多糖聚解，不饱和脂肪酸过氧化，蛋白交联，RNA、DNA断裂、突变等。

Loaded on the pontic vertically, the distribution of the stresses in periodontal ligament was less un...

提示粘接桥修复时更应充分考虑基牙条件，缺牙区间隙的大小及修复材料的选择。

Thermally denatured DNA was preconcentrated at pretreated GCE by its adsorption in open circuit for 5min or at the potential of+0.3V for 90s, and produced two well-defined oxidation peaks of guanine and adenine residues at+0.80V and+1. 11V in pH 5. 0 phospoate buffer, respectively, but the native DNA did not produce any peaks at the same conditions.

在pH 5.0的磷酸盐缓冲液中，于+0.3V富集90秒或在开路条件下吸附富集5分钟，热变性DNA可以吸附富集在预处理玻碳电极表面，阳极扫描时，鸟嘌呤和腺嘌呤残基产生两个很好的氧化峰，峰电位分别为+0.80V和+1.11V，而在同样条件下，天然DNA却几乎不出现峰。

This site, by Larry Nittler of the Carnegie Institution of Washington, gives an overview of the study of presolar grains in meteorites.

该站点介绍了在太阳系形成以前时的红巨星和超新星粒子，这些粒子通过陨石来收集到，该网页是由美国华盛顿卡内基学会Larry Nittler先生创建的。

Methyl 6-acylnaphthalene from 2-methylnaphthalene was synthesized via acylation using acetic anhydride and propionyl chloride as the acylating agents with catalyst aluminum trichloride in homogeneous liquid phase system.

为制备重要的化合物2-甲基6-酰基萘，提高酰化产物的收率和纯度，以2-甲基萘为原料，分别研究了乙酸酐和丙酰氯为酰化剂时的酰化反应，对酰化反应的产物进行了GC、FT-IR和GC-MS表征；对酰化反应的影响因素进行了研究。

However, the mobility of protocorm of PX-2 is controlled at 30-33 seconds, so the spraying shall adopt electrical spray gun with a power of above 1.5KW.

PX-2在工程中使用可涂可喷，由于PX-2的原基体流动度均控制在30-33秒之间，使用喷枪时需1.5KW以上的电动喷枪。

As PX-9 adopts the protocorm of PX-2 and the mobility of protocorm of PX-2 is controlled at 30-33 seconds, the spraying shall adopt electrical spray gun with a power of above 1.5KW.

PX-9在工程中使用可涂可喷，由于PX-9采用PX-2原基体，流动度均控制在30-33秒之间，使用喷枪时需1.5KW以上的电动喷枪。

Under scanning electron microscopy, along with the extension of the culture time, the chondrocytes grew and propagated well on the surface. On 3 weeks, the cells adhered to the surface, and extended the pseudopodia, by which the cells were connected each other. The cells secreted matrix, which deposited around the cells and the surface of meniscus. In some area, the cells formed the structure like cartilage lacuna.

扫描电镜观察，随着培养时间延长，细胞在材料表面生长良好，细胞密度增加。3周时，可见细胞黏附在材料表面，有伪足伸出，细胞间通过伪足相互连接，并可见细胞分泌的大量基质沉积于细胞周围和材料表面，部分区域形成类似于软骨陷窝样结构。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。