前后的

From SPF wister rats were extracted from the femur BMSCs nestin cultivation, and third generation will BMSCs and join BMP - 2 after polylactic acid/Hydroxyapatite Poly (Lactid Hydroxyapatite/L - and PLLA/HA) composite material compound for in vitro cell culture, BMSCs MTT method in detecting the proliferation of biological material surface conditions, Scanning electron microscopy to observe its surface ultrastructure and cells in the growth of the material.

从SPF级wister大鼠股骨中提取BMSCs进行原代和传代培养，将第三代BMSCs与加入BMP-2前后的聚乳酸/羟基磷灰石（Poly L-Lactid /Hydroxyapatite， PLLA/HA）复合材料复合进行体外细胞培养，MTT法检测BMSCs在生物材料表面的增殖情况；SEM观察其表面超微机构及细胞在材料上的生长情况。

All the cases were observed on symptoms,signs and the changes of lumbar lordotic angle and intervertebral space height on radiology before and after operation,and the area of interbody graft was measured by postoperative CT. A follow-up period was lasted for 6-26 months to observe initial clinical effect and fusion rate.

观察手术前后的症状、体征、影像学上的腰椎前凸角、椎间隙高度指数的变化，以及手术后CT检查椎体间植骨面积，同时随访6~26个月观察初期临床疗效和融合率。

This essay offers an analysis on both the problems caused by usin g permanent residents as the total population quota in the assessment of GDP per c apita and its reasons as well. Amendments are put forward that present populati on be used as the total population quota. Meanwhile, a comparison between the f ormer GDP per capita and amended GDP per capita is provided.

文章对我国人均 GDP核算中用常住人口作为人口总数指标出现的问题及其原因进行了分析，然后提出了用现有人口作为人口总数指标的修正方法，并对修正前后的人均GDP进行了比较分析。

INTERVENTIONS: The patients were asked to be in prone sitting position,their nape and shoulder were fully exposed, and the negative pressure cupping was applied to patient' s nape and shoulder until petechiae appeared on the skin. The treatment was given once or twice a week.

干预：患者俯伏坐位，暴露颈肩部和上背部，用负压罐吸拔于颈部，使颈肩部和背部疼痛部位的皮肤出现瘀斑，每周治疗一两次，治疗1个月后，根据患者治疗前后的自觉症状和体征以及X射线片、脑血流图的检查结果进行治疗效果评定。

Ca2 was activated by microwave to investigate its physical characteristics and dechloriantion.The change of total pore area,pore area of different pore size zone,pore size distribution of the sample before and after reaction of different microwave activation was examined by mercury porosimeter.

采用微波炉对一定质量的氢氧化钙样品进行活化，利用压汞仪考察了不同微波活化时间及脱氯反应前后的Ca2总比孔表面积、分段比表面积和孔径分布的变化，并在脱氯实验台上对脱氯效率进行实际测试。

In order to solve the problems of complex cellulose production process and serious pollution, The paper investigated the solubility of cotton stalk cellulose in ionic liquid N-ethyl pyridinium bromide. The structural differences between cotton stalk cellulose and cellulose regenerated from the ionic liquid were investigated using infrared spectroscopy and chemical analysis. Recovery ratio of ionic liquids was also studied.

为解决纤维素生产加工过程复杂且污染严重问题，试验探讨了棉秆纤维素在离子液体溴代N-乙基吡啶中的溶解性能，采用红外光谱等手段对棉秆纤维素在离子液体中溶解和再生前后的结构变化进行了分析，并探讨了离子液体的回收。

The low temperature properties of the binders were greatly improved, the dynamic mechanical properties of SBR-modified asphalts before and after oxidation or sulfurization were characterized at -30~100℃ by using dynamic shear rheometry. The results show that the addition of SBR1500 increased the binder elasticity at low temperature.

结果表明，加入粉末SBR1500后改性沥青材料薄膜前后的延度和流变性能都有明显的改进，而硫化共混改性可显著提高低温下改性沥青的粘弹性能。

In this manuscript, the quality changes of the dehydrated Salicornia bigelovii Torr treated by clear water immersion, vacuum infiltration and ultrasonic treatment were inverstigated, and the quality parameters were compared on the basis of salt content, conductivity of soak solution, VC and chlorophyll contents, sensory assess before or after rehydration.

通过对含盐量、浸泡液的电导率、VC、叶绿素、干制品复水前后的感官评定分析，研究了清水浸泡、真空渗透、超声波处理等3种脱盐方式对海芦笋干制品含盐量及其品质的影响。

In this study, We used longer DD primers in combination with a two-step PCR protocol to overcome these two problems in term of modified methods of Martin and Pardee.K562 erythroleukemia cell differentiation induced by HEMIN or PMA for 36 hours was used as erythriod or megakaryocytic differentiation model in vitro.Total RNAs were extracted from induced and uninduced K562 cells and were applied to mRNA differential display analysis.

为解决此问题，我们参照Martin和Pardee的改进方案［3］，建立了一种使用长引物，进行二步PCR的改进DDRT-PCR方法，以氯高铁血红素和肉豆蔻佛波酯诱导K562细胞36小时作为体外红细胞和巨核细胞分化模型，取诱导前后的细胞总RNA进行mRNA差异显示分析。

The article mainly studied impact of carbon dioxide dissolved and degassed in raw milk on physical property and the stability,and got the suitable carbon dioxide supplementation.

在实验室条件下研究了添加CO2的原料乳在脱气前后的物理性质和稳定性，以确定适宜的CO2添加量。

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。