前后的

In the chapter 2 of this dissertation, the modification of CaCO_3 based on interfacial design and the application in the toughening of PVC were studied.

在CaCO_3表面键合上不同的表面改性剂，并以接触角测定的方法，研究了CaCO_3改性前后的表面性质及其与PVC的界面性质。

Effects of the experiment were evaluated by studies of (1) preoperative and postoperative gastric analyses,(2) retrograde tracing of horseradish proxidase to vagi, and (3) acetylcholinesterase activity of gastric tissue.

通过手术前后的胃液分析，术后（2周～4个月）辣根过氧化物酶对胃壁神经的逆行追踪及胆碱酯酶活性（AChE-activity）的测定来评价该设计手术的效果。

The related clinical information that were collected includes: age , sex , the time from onset of illness to hospitalization , the history of angina pectoris former and 48 hours before onset of illness, smoking history, the history of hypertension and diabetes mellitus, blood pressure of admission , the drug of thrombolysis therapy , the time from onset of illness to performing thrombolysis therapy, the recanalization of infarction related artery ,the serum MB isoenzyme of creatine kinase peak value , plasm blood white cell count of admission, plasm lipid concentration,the electrocardiogram before and after thrombolysis therapy .

收集的临床资料包括：年龄、性别、住院日、发病距入院的时间、既往心绞痛病史、发病前48小时内心绞痛发作情况、合并高血压病、合并糖尿病及心肌梗死部位情况、嗜烟史、入院时心率、血压、溶栓药物、溶栓距发病的时间、血管再通情况、血清肌酸磷酸激酶MB同工酶峰值、入院时血白细胞计数、血脂及溶栓前后的心电图。

Affected by the reverse-curve arch wires, the perpendicular force on the incisors were brought intrusively and on the molars were brought intrusively and distal upright; however, the canines and the bicuspids, in the perpendicular direction, moved along with the transformation of the angle and depth of the reverse-curve arch wires.

采用 ANSYS 有限元软件建立下颌牙列、牙周支持组织以及不同角度、不同弧形深度的0.46 mm ×0.64 mm 不锈钢下颌标准弓形摇椅弓的三维有限元模型，将摇椅弓变形前后的位移差作为荷载施加于有限元模型，通过多次迭代使其满足变形协调条件，计算出牙齿垂直方向的受力情况。

LogMiner is very good for getting change history, but it gives you changes in terms of deltas, not in terms of the before and after image of a row.

但 LogMiner 是以操作的形式来反映修改的历史记录的，而不能直接将修改前后的数据展现给用户。

In the article we do some analysis, count and contrast on the change of period-mode heat treatment electric stove's accumulation of heat capacity and stove weight and the furnace lining's structure of it has been improved on.

通过对周期式热处理电炉在炉衬结构改进前后的蓄热量和炉体重量的分析计算对比，证明了耐火纤维在周期式热处理电炉上的应用，将会给热处理电炉带来显著的节能经济效果。

To ensure the quality of customers, the company established a sound quality management system, each batch of paint for its heavy metal content requirements in line with ASTMF963-96A and ROHS standards, the production of paint for testing process, before and after the paint and packaging for all The test of performance, but also to stay boards, in order to trace.

为保证客户品质，公司建立了一套完善的品质管理体系，对每批颜料其重金属含量要求符合ASTMF963-96A及ROHS标准，对生产中的油漆进行制程检测，并对包装前后的油漆进行各项性能的测试，同时还要留板，以便追溯。

In addition, the ingredients have been tested by the IR spectra which show the probability of the nano-porous structure. SEM pictures, specific surface areas and distribution of pore diameter have been tested to study the nano-porous structures in surface and some data before and after the pyrolyzing process have been gained: the size of the organic aerogel is 30~50nm, that of the carbon aerogel is about 10nm, the specific surface area increases from 341.77m^2/g to 452.75m^2/g, the density increases from 0.1708g/cm^3 to 0.3356g/cm^3 respectively.

借助有机气凝胶的红外光谱研究了其化学结构，说明其网孔结构形成的可能性；研究了有机气凝胶的扫描电镜图像、比表面积及孔径分布等，并得到碳化前后的一些对比数据：有机气凝胶颗粒大小30~50nm，碳化后约为10nm，比表面积从341.77平方公尺/g增大到452.75平方公尺/g，密度从0.1708g/立方公分增大到0.3356g/立方公分。

However,the freeze-drying process provides a new way to solve this problem. The process was conducted the way a sample is precooled to-30℃,and the shelf temperature during primary drying is set to-30℃,which during secondary drying is set to 15℃.The time required for the whole freeze-drying process is a...

将样品预冻到-35℃后，一次干燥时搁板温度控制在-30℃，二次干燥时搁板温度控制在+15℃，整个冻干过程在25小时的工艺下，通过改变脐带血中冻干保护剂组分及浓度，比较冷冻干燥后有核细胞的恢复率，得出恢复率最高(68.397%)的配方(40%PVP+30%海藻糖+10%甘露醇)，并比较了细胞冻干前后的形态，然后将样本在常温下放置三周后进行了P I染色活性检测(89.08%)。

objective to evaluate clinical effect of the handling protaper nickel-titanium rotary instruments in preparation of canals of posterior teeth.methods 96teeth with pulpitis or periapical periodontitis were instrumented by handling protaper rotary instruments using step-down technique,and by k files using step-back technique for control.all teeth were obturated with lateral condensation methods.the efficiency of preparation was analyzed with ra-diographs before and after operation.results no transportation,apical blockage and ledge were found in test.the technique could keep canals smooth.there were two ledge,one instrument fracture and nine transportation in control.the operative time was shorter and post treatment pain seldom occurred in handling protaper group.conclusion the handling protaper niti rotary instruments can prepare the canals effectively and safety.after the preparation,the canals could be easily washed,sterilized and filled.it is an efficient instrumentation method for posterior teeth's canals and be used widely.

目的 评价手用protaper预备后牙根管的临床效果。方法选取患有牙髓炎和根尖周炎的后牙96例，随机分成试验组和对照组各48例，试验组用手用protaper多锥度镍钛旋转器械逐步伸入法预备根管，对照组用k锉，逐步后退法预备根管，两组均用侧向加压充填法充填根管，根据治疗前后的x线片，评价后牙根管预备效果。结果试验组无根管偏移、根尖阻塞、台阶，且根管壁平滑流畅，无器械折断等并发症发生。对照组有2例台阶形成，器械折断1例，根管偏移9例。试验组操作时间短且术后疼痛轻微。结论应用手用protaper预备后牙根管快速、安全，成形效果好，易于根管冲洗消毒及填充，可视为临床上预备后牙根管的有效方法。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新