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Methods Twenty female SD rats were divided into 2 groups (n=10): a 4 cm-segment of distal small intestine used to reconstruct the rat bladder (with preserved trigone of the bladder) in experiment group, and the control group with sham operation.
方法雌性SD大鼠2组,实验组以4cm末段小肠重新构建大鼠膀胱,对照组行假手术。
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this paper analyses the basic principle of tpc,compares the error performance in the system which has been applied with tpc with the uncoded system,studies the influences which different block codes and iterative numbers to tpc decode performance.under the circumstances of different iteration numbers and block codes,experiment simulation is carried on.the simulation results indicate that introduction of tpc can get the code gain of 5~6 db.tpc decoding algorithm is simple,and doesn′t have the error floor,the complexity of its hardware implementation is smaller,it is a kind of practical channel coding method.
摘 要:在分析turbo 乘积码的基本编译码原理的基础上,比较了未编码与编码后系统的差错性能,研究了选取不同分量码、不同迭代次数对tpc译码性能的影响。在不同迭代次数与分量码情况下,进行了仿真实验。仿真实验表明,在相同的差错性能条件下,采用tpc码能带来5~6 db的编码增益。tpc译码算法简单,没有错误平层,硬件实现复杂度较小,是一种非常实用的信道编码方式。
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The experiment results showed that, the MnO_2 particles scattered uniformally after milled for 6h, the average diameter was 300nm, which loaded on the surface of fiber in flat successfully. The removal efficiencies to HCHO of MnO_2 milled for 6h was up to 94.07% after 72h, the removal efficiencies increased with the content of MnO_2 loaded, its increased after treated with DMF, or so was 7%.
实验结果表明,研磨6h的MnO_2粉末分散均匀,平均粒径可达300nm,以平铺的形式均匀地负载于纤维上,效果比较理想;随着吸附时间的延长,研磨6h的MnO_2粉末反应72h对甲醛的去除率达94.07%;活性炭/腈氯纶负载MnO_2纤维对甲醛的去除率比未负载的明显提高;随着纳米MnO_2负载量的增大,甲醛的去除率变大,用DMF处理后的纤维对甲醛的去除率有所提高,大约提高7%。
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A detection method for welding lines based on K-L algorithm is discussed. Infrared light source is applied to get high quality images of welding lines through CCD. Image template libraries for unwelded and welded lines are constructed and the welding line image is processed by K-L algorithm to match with the template libraries to judge if the welding line has been welded. The experiment shows that above method is effective with high precision and speed and it can be applied on real-time detection of welding lines.
提出计算机对所得图像进行滤波和图像分割,讨论了K-L算法的原理及其在红外焊缝图像检测中的应用;以红外光源照射焊缝,通过CCD摄取焊缝的图像,建立已焊和未焊的图像模板库,采用K-L算法对焊缝图像进行处理,并与模板库进行比较,得出焊缝是否焊接的结论;试验结果表明,该方法检测精度高,检测速度快,可以实时运用于对手工电弧焊的焊缝质量检测中。
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Experiment was conducted with mature leaves of Zizyphus jujuba Mill. cv. Chuangan (stored at -20℃,-70℃, dried with silica gel) and 3 methods, including CTAB, high salt precipitation and high salt and low pH were used for total DNA extraction for studying their effects on DNA extraction.
以串杆枣的成熟鲜叶为试材,分别采用-20℃、-70℃和硅胶脱水干燥3种方法保存样品,采用简易CTAB法、高盐沉淀法与高盐低pH值法分别对3种方法保存的样品及对照样进行了基因组DNA提取效果的比较分析。
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Methods: Integrated and disrepaired skins in the rats were smeared with Salicylic AcidPhenol Liniment by the maximum tolerated dose only. The toxic reaction of the animals were observed and recorded continuously from the beginning of using the drug to 7 days, and evaluated by using the general standard of the reaction of skin stimulation in pharmacology. Animals were executed by taking off acanthi and blood was collected to check up the periphery blood routine and serum biochemistry at the end of the observation of the rats. And after the dissection, the pathological change of main visceras, such as heart, brain, liver and kidney were observed with naked eye and pathological slices. The data of this experiment was used to calculate the value of LD50 by using Bliss rule.
观察大鼠完整皮肤及破损皮肤一次性涂抹最大耐受量的小儿水杨酸苯酚搽剂所产生的毒性反应情况,从给药0时起至7 d连续观察记录动物的急性毒性和45 d连续的长期毒性反应,以皮肤刺激反应标准进行评分作毒理等级评价;对存活动物在观察结束时进行高位脱椎处死采血检测外周血常规和血清生化,解剖后裸眼和病理切片观察心、脑、肝、肾等主要脏器的病理变化。
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Electromagnetism is used to emulate the means that emulates union with circuit to be opposite in the design push - push medium oscillator undertook whole nonlinear emulate, the output spectrum that gets an oscillator, phasic noise emulates a result with what output power, undertook experiment test and verify.
设计中采用电磁仿真和电路仿真结合的方式对推-推型介质振荡器进行了整体非线性仿真,得到振荡器的输出频谱、相位噪声和输出功率的仿真结果,并进行了试验验证。
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The experiment can be optimized by these results: the pellets with great density or with big diameter have the same influence tendency.When the material density is great,the pellet diameter should be taken short relatively,when the material density is small,the pellet diameter should be taken long relatively,the modification effect is best.If spray gas is air,the best pellet diameter should be taken between 1 μm and 10 μm.
结果表明:大密度颗粒与大直径颗粒受流场影响趋势相同;材料密度较大时,颗粒直径应相对取小,材料密度较小时,颗粒直径应相对取大些,喷涂效果最佳;若喷涂气体为空气时,最佳颗粒直径应在1~10 μm。
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Experiment result indicates that the algorithm accords with fact well,and can deal with a variety of situations.
实验结果表明该算法实现的效果较符合实际情况,能有效地处理各种不同情况。
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Oil and polyol firstly hydrolyze, and then react with maleic anhydride to give semi ester, the residual maleic anhydride hydrolyzing to give maleic acid, finally are adducted with DCPD. The result of experiment shows that the synthesized resin is of perfect air drying performance and improved flexibility and anti-greening because of the use of oil, meetin...
试验结果表明,油与多元醇在210~220℃下先醇解,然后与顺酐反应形成半酯,剩余顺酐水解成顺丁烯二酸,然后与DCPD加成,合成的树脂具有优良的空干性;同时油的使用极大地提高了涂膜的柔韧性和抗绿化性,得到的树脂性能上可满足涂料用不饱和聚酯树脂的要求。
- 推荐网络例句
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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。
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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。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。