粒

Heteroduplex molecules have been made by mixing pJSA1175 and pJSAl175ADRV4, pJSA1175ADRV4 and pJSAl175RRV4 DNA molecules which have been linearized by Pst Ⅰ and Bgl Ⅱ respectively, denaturing them in alkaline or high temperature, allowing them to renature and then spreading in the presence of formamide.

以痘苗病毒表达载体pJSA1175及重组质粒pJSA1175ADRV4(含ADRV VP4基因)、pJSA1175RRV4(含猴轮状病毒VP4基因)为材料，用碱变性方法或热变性方法制备了载体质粒与重组质粒DNA之间的异源双链，电镜下成功观察到载体序列部分经变性、复性后配对呈双链状态，而外源基因区域突出呈单链环状结构，测量长度为2.3kb。

Coffee belongs to Rubiaceae Family, an evergreen shrub or short sarbor, and it has many species, among which the widely planted ones are :Arabica, Robusto, and Ethiopean ,while one of the arabica species named"Aromatic Coffee" is mostly prolific, accounting for about 80 percent of the total output of coffee.

咖啡是茜草科咖啡属的多年生常绿灌木或小乔木，种类很多，被广泛种植的有小粒种、中料种、大粒种和埃塞尔萨种，其中被称&香咖啡&的小粒咖啡种产量最多，约占咖啡总产量的百分之八十以上。

It was found that, with the increasing of volume fraction of silver and conductor phase, sheet resistivities descend and there are critical thresholds. The average partical size of bismuth ruthenate and PbO-B_2O_3-SiO_2 glass was researched.

研究了各相粉体平均粒径对膜层性能的影响，结果表明：钌酸铋平均粒径越小，膜层的方阻值越小，电阻温度系数偏正，重烧变化率越接近零值，球磨工艺的极限平均粒径为0.56μm。

Subtilis BD 224, it can be inferred that the host inheritable background could affect the segregational stability of plasmid.

这些起源相同的质粒在Baci-llus.subtilis ASl.1176中的分离稳定性存在差异，这种差异与质粒的大小和复制方式无关，而与质粒的拷贝数有一定的关系。

Experiment studies on the dehydration of fine particle coal using anion denaturating sodium ethyloic sesbania guargums as aid-fliter reagent have been carried out in this paper.

通过利用阴离子型羧甲基钠盐田菁胶对细粒煤和超细粒煤脱水的试验研究，探讨了助滤剂用量、过滤时间、真空度等因素对脱水效果的影响结果表明，该新型阴离子SESG助滤剂能够明显地提高细粒煤过滤脱水的技术指标图 9，参

The Changxing Formation reservoirs are mainly a set of reef dolomite, sparry oolitic dolomite, and have moderate to high porosity, moderate to high permeability and good physical properties. The reservoir space types are mainly intercrystalline pore, intercrystalline solution pore, intergranular dissolved pore, intragranular dissolved pore, moldic pore and dissolved expanding pore, and to a lesser extent, crack and suture.

长兴组储层主要为一套礁白云岩、亮晶鲕粒云岩和残余颗粒云岩，以高中孔、中高渗，孔隙型储层为主，储集空间类型以晶间孔、晶间溶孔、粒间溶孔、粒内溶孔、铸模孔以及溶蚀扩大孔为主，裂缝和压溶缝合线次之，具有较好的物性特征。

Telomerase activity of cavo3 cells treated with spermidine for 3 days significantly increased compared to the control group. conclusion: telomerase activity increased with the increasing of spermidine levels.

用不同浓度精脒室温处理的caov3细胞端粒酶提取液2小时后，端粒酶活性与对照组差异无显著性。caov3细胞经不同浓度精脒处理3天后的端粒酶活性与对照组相比明显增高。

There exists the optimum technical parameters about the effects of hydrolysis conditions. When the concentration of H+is 2.6 2.8 mol/L, the concentration of TiOSO4 is 25 28 g/L, the time of hydrolyzation is 60 min and the temperature of hydrolyzation is 125℃respectively, the yield of TiOSO4reaches 95%, the particle size of H3TiO3 is less than 40 nm, and the powder of H3TiO3 is spheral.

研究结果表明：水解条件直接影响偏钛酸的粒径及其分布，其中，钛液酸度的影响最大；水解条件对TiOSO4水解率和偏钛酸粒径的影响存在着最佳结合点，即当c为2.6~2.8 mol/L，ρ(TiOSO4)(按TiO2计)为25~28 g/L，水解时间为60 min，水解温度为125℃时， TiOSO4的水解率可达95%以上，得到的偏钛酸呈球形且粒径为40 nm。

There exists the optimum technical parameters about the effects of hydrolysis conditions. When the concentration of H(superscript +) is 2.6~2.8 mol/L, the concentration of TiOSO4 is 25~28g/L, the time of hydrolyzation is 60 min and the temperature of hydrolyzation is 125℃ respectively, the yield of TiOSO4 reaches 95%, the particle size of H3TiO3 is less than 40nm, and the powder of H3TiO3 is spheral.

研究结果表明：水解条件直接影响偏钛酸的粒径及其分布，其中，钛液酸度的影响最大；水解条件对TiOSO4水解率和偏钛酸粒径的影响存在着最佳结合点，即当cH(上标+为2.6~2.8mo1/L，ρ(TiOSO4)（按TiO2计）为25~28g/L，水解时间为60min，水解温度为125℃时，TiOSO4的水解率可达95%以上，得到的偏钛酸呈球形且粒径为40nm。

Ninety-eight backcross inbred lines derived from a subspecific cross of Nipponbare/Kasalth// Nipponbare and its genetic linkage map were used to identify quantitative trait locus controlling rice appearance quality traits such as grain length, grain width, length-width ratio, percentage of grains with chalkiness, square of chalky endoperm, degree of endosperm and grain endosperm transparency by composite interval mapping over two year.

利用由98个家系组成的Nipponbare / Kasalath // Nipponbare回交重组自交系（backcross inbred lines，BILs）群体（BC1F9）及其分子连锁图谱，采用复合区间作图的方法，在2个不同年份对粒长、粒宽、粒形、垩白率、垩白大小、垩白度和透明度等7个稻米外观品质性状的数量性状基因位点（Quantitative trait loci， QTL）进行了定位分析。

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。