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The tree T=is a bichromatic tree subgraph in a maximal plannar graph G, in which the subgraph induced by V_t is a tree and T is a component of some bichromatic subgraph Gij of some 4-coloring of G.

极大平面图G=中的一个二色树子图T=，其Vt在G中导出子图为树，并且图G存在至少一个四着色C，使T是该四着色一个二色子图的一个连通支。

A graph G is called*-choosable if for every list assignment L satisfying L=k for all v 6 V, there is an L-coloring of G such that each vertex of G has at most d neighbors colored with the same color as itself.

若对任一顶点给定k种颜色的列表，染色时每个顶点的颜色只能从自身的颜色列表中选择且每个顶点至多有d个邻点染相同的颜色，总存在图G的一个顶点的正常着色，则图G称为~*-可选色的。

The fill-in minimization problem comes from the elimination process of sparse matrix computation. In a graph-theoretic version for a graph G, it is to find a set F of added edges such that the graph G+F is chordal and |F| is minimized.

起源于稀疏矩阵计算和其它应用领域的图G的最小填充问题是在图G中寻求一个内含边数最小的边集F使得G+F是弦图。

And the effect of different carbon source for the SYPS-062 and Corynebacterium glutamicum ATCC13032 fermentation were studied. The experiment result showed that the sucrose was 60 g/L, the yield of L-serine and biomass reached the maximal value, 6.6 g/L and 8.1 g/L respectively.

同时考察了碳源对菌株SYPS-062发酵产L-丝氨酸的影响，实验结果表明，当蔗糖浓度为60 g/L时，菌株SYPS-062生物量和L-丝氨酸的积累均达到最大值，分别为8.1 g/L和

Human leukocyte antigen-G is a neoclassical human leukocyte class Ⅰ b antigen which was observed to be restrictively expressed by the fetal-maternal inter-fate on the extravillous cytotrophoblast.

人类白细胞抗原－G(human leukocyte antigen-G， HLA-G)属于非经典的HLA-Ⅰ类抗原分子，早期的研究发现HLA-G的表达仅局限于母胎界面的绒毛外细胞滋养层。

The Spectrophotometry method was used in experiment, the results is that the content of polyphenol is 14.8 mg/g in Jianshui's Elsholtzia bodineri Vaniot., which was higher than Shiping. The content of total flavones in the tea is 52.8 mg/g in Shiping, 43.9 mg/g in Jianshui.

通过分光光度法检测红河州两个县市野山茶茶水中的多酚类物质及总黄酮的含量，结果表明建水野山茶多酚类物质含量较高，为14.8 mg/g；石屏野山茶总黄酮较高，为52.8 mg/g。

Result The result showed that the inhibitory action of isofenphos-methyl on T. harzianum was strongest and the fungistatic rate was 64.37% after treated with 200 μg/ml isofenphos-methyl ,and its EC50 was 119.56μg/ml, the germination rate was 64.25 %. The next was phoxim and phoxim-cyoermethrin mixture, the germination rates were 68.5% and 72.08% when the application concentration was under normal use content, their EC50 of mycelia growth was 285.63 and 251.51 μg/ml.

结果］甲基异柳磷在田间使用浓度(200μg/ml)下对哈茨木霉的菌丝生长和孢子萌发有强烈的抑制作用，抑菌率为64.37%，抑制中浓度EC50为119.56μg/ml，孢子的萌发率仅为64.25%；其次为辛硫磷和辛。

The results showed that the structure of St-g-PAM was meshy,and porous,and integrant linetype,the soluble starch had elliptic form,and PAM was linear color;the crystallinity of St-g-Pam had been improved,and was better than PAM;the thermal stability of St-g-PAM was also better than PAM,which was the significant reason that the graft polymer had the ability of excellent flocculation.

线型St-g-PAM作为一种新型的高分子絮凝剂，它结合了淀粉与聚丙烯酰胺的特性，广泛应用于废水处理、石油化工、造纸工业等领域[3~5]。由于其原料淀粉来源丰富、价格低廉，且线型St-g-PAM的成本比PAM低，故越来越受到人们的重视。

Detection the early stage apoptosis cells by flow cytornetry Incubating SCL-1 cells in 6-well culture medium with 1×10~6/well, after 12～48hculture with the concentration of imiquimod 0μg/mL and 150μg/mL, gathering cellsgrowing along the wall and making monocellular suspension, washing in PBS for 2times, and then add 5μL Annexin V/FITC and 10μL PI solutions, reaction for 15min avoiding light, detection the early stage apoptosis cells by flow cytometry.

流式细胞仪测定细胞早期凋亡 SCL-1细胞以1×10~6个／孔接种于6孔培养板中，使用含0μg／mL、150μg／mL咪喹莫特的培养液培养12～48h，收集贴壁生长的细胞制成单细胞悬液，PBS洗两次，分别加入5μL Annexin V／FITC和10μL浓度20μg／mL的PI溶液，混匀后室温避光孵育15min，流式细胞仪检测，结果用Cell Quest软件分析。

In the study of testing the overall ability of anti-oxidation, polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) still have the better overall ability of anti-oxidation than control group, trolox. The IC50 values of compound 1-10 range 2.49 to 3.92, while the IC50 value of trolox is 5.23 μg/ml. Compound 10 is still the best derivative which has the best overall ability of anti-oxidation; IC50 value is 2.49 μg/ml.

而在总抗氧化能力结果显示，相较於对照组水溶性维生素E之IC50值5.23 μg/ml，多羟基取代之N-色洛冬宁苯甲醯胺衍生物（化合物1 ~ 10）之总抗氧化能力效果IC50值介於2.49 ~ 3.92 μg/ml之间，十种醯胺化合物的总抗氧化效果皆比对照组水溶性维生素E的抗氧化效果还要来得优越，其中效果最强的仍为化合物10，其 IC50值为 2.49 μg/ml。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。