甲基丙烯酸

Osteoporotic pedicles were augmented with polymethyl methacrylate using either a kyphoplasty type technique or a transpedicular augmentation technique.

骨质疏松的椎弓根用聚甲基丙烯酸甲酯进行了强化，它们有的是用后凸成形技术，也有的是用经椎弓根强化技术。

It's almost remarkable that a man who turned to MMA because he was frustrated with the "jab, jab, jab" tedium of western boxing, would be such a fan of the intangible, but Neves said he's already learned a few valuable life lessons from his new friends at TAPS.

它的几乎显着，一名男子谁转向甲基丙烯酸甲酯，因为他是沮丧与&申诉委员会，申诉委员会，申诉委员会& tedium西方拳击，将这样一个扇无形的，但韦斯说，他已经学到了一些宝贵的生活的教训，从他的新朋友，在水龙头。

AbstractObjectives1 Correlate bone mineral densityto vertebral compressive strengths.2 Consummate the technique for percutaneous polymethylmethacrylate vertebroplasty and observe the pattern of PMMA imaging distribution.3 Determine the strength and stiffness of osteoporotic with or without vertebroplasty with PMMA bone cement.4 Correlation of BMD,insertion torque and pull-out strengths of pedicle screws.5 Ascertain whether augmentation with PMMA bone cement can enhance pedicle screw fixation in the osteoporotic spine.6 Ascertain whether augmentation pedicle screw fixation with PMMA bone cement can enhance the stability of unstable thoracolurner burst fractures of osteoporotic spine.

目 的1、测试椎体压缩强度，分析强度与骨矿物质密度（bone mineral density，BMD）的相关关系。2、观察经皮椎体成形术后聚甲基丙烯酸甲脂（polymethylme- thacrylate，PMMA）骨水泥在椎体内的形态学分布及影像学表现。3、比较PMMA骨水泥骨质疏松椎体成形术前/后椎体最大抗压力和压缩刚度的变化。4、分析椎体BMD、螺钉最大旅入力矩和最大拔出力三者之间的关系。5、分析PMMA骨水泥强化骨质疏松椎弓根螺钉后的螺钉的最大轴向拔出力和拔出刚度的变化。6、评价PMMA骨水泥强化骨质疏松椎弓根螺钉脊柱内固定对不稳定型胸腰椎损伤的即刻稳定性和反复载荷后的稳定性。

In the maximal axial pulling-out force group, the hollow nails were directly implanted into 10 femoral neck samples after drilling at the axial center.

最大轴向拔出力实验分组，10个股骨颈在轴向正中钻孔后直接置入空心钉，另10个股骨颈在轴向正中钻孔后注入聚甲基丙烯酸甲酯骨水泥，然后置入带侧孔的空心钉。

RESULTS:① The maximal axial pulling-out force of 10 femoral neck samples implanting the hollow nail was 471.5-1 070.5 N, with the mean value of (855.0±207.5) N; the maximal axial pulling-out strength of femoral neck samples implanting the side-hole hollow nail added by poly-methyl methacrylate bone cement was 2 023.7-3 572.1 N, with the mean value of (2 943.3±535.8) N.

结果：①置入空心钉10个股骨颈的最大轴向拔出力为471.5~1 070.5 N，平均(855.0±207.5)N；而添加聚甲基丙烯酸甲酯侧孔空心钉后最大轴向拔出力在2 023.7~3 572.1 N，平均(2 943.3±535.8)N。

The pulling out experiment was performed by AGS-10KN material testing machine to measure the maximal axial pulling-out strength of hollow nail and the maximal loading when the nail was loose during anti-bending cycle experiments.

结果：①置入空心钉10个股骨颈的最大轴向拔出力为471.5~1 070.5 N，平均(855.0±207.5)N；而添加聚甲基丙烯酸甲酯侧孔空心钉后最大轴向拔出力在2 023.7~3 572.1 N，平均(2 943.3±535.8)N。

In the maximal axial pulling-out force group, the hollow nails were directly implanted into 10 femoral neck samples after drilling at the axial center. The polymethyl methacrylate bone cement was inserted into other 10 femoral neck samples after drilling at the axial center, and the side-hole hollow nail were then implanted.

最大轴向拔出力实验分组，10个股骨颈在轴向正中钻孔后直接置入空心钉，另10个股骨颈在轴向正中钻孔后注入聚甲基丙烯酸甲酯骨水泥，然后置入带侧孔的空心钉。

To address this question, I've written a three-part MMA fitness program.

为解决这个问题，我已经写了三个部分，甲基丙烯酸甲酯的健身计划。

Chloromethyl-4-hydroxyl-7-methyl-6,7-dihydrothiopheno pyrimidine,2-chloromethyl-4-methoxyl-7-methyl-6,7-dihydrothiopheno pyrimidine have been synthesized by the reaction of chloroacetamidine hydrochcoride 2-ethoxycarbonyl-4-methyl-tetrahydrothiophen-3-one and dimethyl sulphate in this paper.

以甲基丙烯酸乙酯、巯基乙酸乙酯和氯乙腈为原料高产率地合成了两种新型导电高分子单体化合物，并通过核磁氢谱、核磁碳谱、质谱等确定了它们的结构。

The solidify liquid was consisted of 5% sodium chondroitin sulphate, 12% sodium suecinate and 83% water.

聚甲基丙烯酸甲酯辅强组，15只／组：分别于术后3，6，12周取材，每个时间点5只／组。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。