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The results showe that (averageM(subscript η), of recycled PET is increased 4600g/mol when the amount of BOZ is 0.2%;(averageM(subscript η), of 33300 g/mol can be obtained when PMDA is employed, 9300 g/mol higher than the average (averageM(subscript η), of raw material.

实验结果表明：在扩链剂用量均为0.2%时，BOZ可使产品的(平均值M高4600 g/mol；BOZ和PMDA联用有一定的扩链效果，但不够理想；而使用PMDA可使产品的(平均值M高9300 g/mol，达到33300 g/mol，扩链效果显著。

The research results indicated that the best base was KOH, the best acid was H3PO4 and their neutralizing products were the necessary nutrients for foliar fertilizer; 12.4 L of foliar fertilizer were obtained in per kg of shrimp offal, chitin was obtained in 13.8% yield, crude protein was obtained in 23.2% yield using this method; This multifuctional foliar fertilizer was an abundant nutritional multifunctional foliar fertilizer which contained 15 kinds of amino acids, shimp cephalin, astacein and many trace elements. The concentration of calcium was 38.9 mg/L, the concentration of magnesium was 55.4 mg/L, the concentration of potassium was 20.0 g/L, the concentration of nitrogen was 4.5 g/L and the concentration of phosphorus was

研究结果表明：(1)处理虾下脚料的最佳碱是KOH，最佳酸是H3PO4，其中和产物是叶面肥必需的营养素；(2)本工艺不仅每Kg虾下脚料可制备虾叶面肥12.4L，而且可回收13.8％甲壳素和23.2％粗蛋白质；(3)经分析测定虾叶面肥中，含钙(Ca2+)38.9 mg/L，含镁(Mg2+)55.4 mg/L，含钾20.0 g/L，含氮4.5 g/L，含磷 78.9 g/L，还含有15种氨基酸及虾脑磷脂、虾红素及多种微量元素等，是一种营养丰富的多功能叶面肥。

In section 4,we research the solvable groups of finite rank,and provethat the union set of all quasi-cyclic subgroups of G is a characteristic subgroup andthe Hirsch number hdoes not exceed n if G is a solvable group of rank n.Inparticular,for an arbitrary solvable torsion-free group G of rank n,we give theupper bound fof the derived length of G.

在第4节里，我们研究了有限秩的可解群，证明了这类群的所有拟循环子群构成它的一个特征子群，且对秩n的可解群G来说，其Hirsch数h≤n，另外，我们给出了秩n的无挠可解群的导出长度的一个上界。

Meiotic pachytene bivalents were obtained from porcine testes using prolonged hypotonic treatment combined with high chloroform Carnory's fixative solution. Mitotic metaphase chromosomes were prepared from blood cell culture. Comparative studies on division index and length of pachytene bivalents and mitosis metaphase chromosomes showed that those of the former are 5 times higher and 3.42(1.87～5.98) times longer than the latter, respectively. Chromomere maps of bivalents are more abundant than mitotic metaphase G-bands, while they are correspondent with mitotic early-metaphase G-bands. The result was found by using the chromosome 12 as a sample.

以性成熟公猪睾丸和外周血为材料，采用长低渗、高氯仿卡诺固定液固定和外周血细胞培养制备减数分裂粗线期二价体和有丝分裂中期染色体，通过对二价体和有丝分裂中期染色体分裂指数和长度的比较研究，发现二价体的分裂指数和长度分别是有丝分裂中期染色体的5倍和3.42倍(1.87～5.98)；同时以12号染色体为例，比较了二价体上的染色粒结构带与有丝分裂中期染色体G-带，表明染色粒结构带比中期染色体G-带带纹丰富，而与早中期G-带带纹吻合。

Let G be a double-outer plane graph, V, E, F be the set of points, edge and face, a plane graph G is k-total colorable, if the elements of V E can be colored with K-colors, any two distinct adjacent or incident elements receive different colors.

设G是一个双外平面图，V，E，F分别为双外平面图G的点集，边集和面集。G的全色数X是使得V∪E中的任意两个相邻或相关联的元素间均染不同颜色的最少颜色数。

The results showed that the maximum lethal dosage of Datura stramonium ranged between 4 g·kg-1 and 16 g·kg-1 to Mus musculus.

结果表明，小鼠对曼陀罗的耐受量大于4 g·kg-1，小于16 g·kg-1，致死中量LD50=7.04 g·kg-1，95%置信区间为［5.75，8.62］，回归方程为Y=0.8872＋

The Gram-positive staphylococcus is also major disease-producing germs in VA pneumonia, and the infection routes of G+ and G- bacteria might be different.

(1)VA肺炎中G+球菌者占相当比例；(2)G-杆菌和G+球菌所致感染途径可能不同。

Spherical yeast OS-194 is an only erythritol production osmophilic yeast. 10 percent of glucose ,0.5 g/dL for yeast extract and 0.1 g/dL for urea were the best components of medium,which obtained high erythritol yield by OS-194.The optimum culture conditions were 35℃,150 rpm,and 4 d.

球拟酵母OS-194是一株单产赤藓糖醇的耐高渗酵母，该菌株高产赤藓糖醇的最佳培养基配方为：葡萄糖10 g/dL，酵母膏0.5 g/dL，尿素0.1 g/dL。

Lung concentration-time data after oral administration of 50mg/kg body weight we re also best d escribed by a two-compartment open model. The parameter of male chicken were as following: t1/2 a 为 2.28S±0.657h , t1/2Ka1.090±0.193h, t1/2B 为 37.606±4.474h, AUC530.797±48.050*h, CL 0.095±0.008mg/kg/h/, Tmax 5.256±0.442h, Cmax 9.044±0.016ug/g.

公鸡肺脏主要的药代动力学参数：t1／2 α为2.285±0.657h、t_(1/2Ka)为1.090±0.193h、t_(1/2β)为37.606±4.474h；AUC为530.797±48.050~*h、CL为0.095±0.008mg／kg／h／、T_为5.256±0.442h、C_为9.044±0.016μg／g；母鸡肺脏主要的药代动力学参数：t_(1/2α)为1.556±0.825h、t_(1/2Ka)为0.732±0.101h、t_(1/2β)为23.304±2.320h；AUC为395.073±12.095~*h、CL为0.127±0.004mg／kg／h／、T_为3.584±0.440h、C_为10.691±0.542μg／g。

Suppose that G is a finite group and p is a prime such that p||G|.

设G为有限群，p是G阶数的一个素因子，即p||G|。

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。