影响...

Due to the fact that the intercarrier spacing in OFDM is relatively small, OFDM transceivers are somewhat more sensitive to phase noise compared to single carrier transceivers. Thus this problem must be carefully considered in designing an OFDMbased system since an accurate prediction of the tolerable phase noise can allow designer to relax system specifications. According to spectrum theorem, two components of phase noise were analyzed: common phase error and intercarrier interference. On the basis of the analysis, the performance of OFDM was given for the case where phase noise has been added to the signal, and an optimal design criterion for OFDM parameters was proposed that allows to improve the phase noise error correcting capabilities in OFDM receiver.

由于采用子载波间相互正交的结构，OFDM系统对于由本地振荡器不稳定性所导致的相位噪声影响非常敏感，针对公共相位误差CPE和载波间干扰ICI两种影响表现形式不同的干扰项，从功率谱密度函数这一独特角度分析了相位噪声对OFDM系统性能的影响，提出了旨在提高接收机抵抗相位噪声能力的OFDM系统关键参数优化与设计准则，可在对所设计OFDM系统性能加以提高的同时，有效降低对接收机前端模拟振荡器件和相位噪声抑制单元的性能指标要求，从而降低接收机硬件实现成本。

ConclusionTo begin with, the blood supply is adequate in the intertransverse area, and the distribution of blood vessels follows some regularities, so to be familiar with the anatomy and to operate carefully can reduce bleeding.

同时腰椎横突间及小关节区域常为诸多腰椎手术所涉及，临床上在处理这一区域时常会因损伤血管，引起出血不止而导致手术视野不清并影响手术操作，同时大量的出血可影响患者的手术耐受性，增加发生输血相关并发症的风险，尤其对ILIF手术，如忽略对此区域解剖结构和血管走行的认识将可能影响手术成功施行。

Cifu in South Song dynasty was affected firstly by the psychology of interversion, secondly by Buddism, Taoism and Confusian school of idealist philosophy of that time, thirdly by the choice of the theme and artistic conception.

具体表现为：沉潜内敛心理特征的影响；释、道、理学思想的影响；题材的选择、构思方面的影响。

Leitzmann, MD, from the National Institutes of Health in Bethesda, Maryland, and colleagues."Whether dietary zinc intake affects intraprostatic zinc levels is unknown. However, ingestion of 150 mg/day or more of zinc has undesirable metabolic effects, such as immune dysfunction and impaired antioxidant defense that are potentially related to prostate cancer."

Leitzmann博士表示，虽然日常饮食的锌摄取量是否会影响前列腺中的锌含量仍然未知，但是前列腺中拥有较高的锌浓度可能会对於前列腺的健康造成影响，但是，每天服用150mg以上的锌，对於代谢会造成不良影响，如免疫功能障碍并造成与前列腺癌有关的抗氧化剂之缺损。

In one hand, this kind of distribution enhanced the ability to withstand the adverse environment condition, in another hand, this kind of distribution had no benefit to extend the population and had some effect on the endangered state of Davidia involucrate.

通过对珙桐在湖北五峰后河的空间分布格局的研究，珙桐的种群偏离随机分布显著，由x~2检验和测定的各集聚强度指数也一致反映出琪桐种群的分布格局服从负二项分布，属集聚分布类型，水分和土壤因子是影响其生长进而影响其分布格局的主导因子，这种分布虽然增强了种群抵御不良环境的能力，但不利于琪桐扩散，对珙桐濒危有一定的影响。

It is speculated that this components feedback adjusting the this receptor\'s expression through receptor-binding with 5-HT3A receptor.3.3 Effection of Iridoids composition of Valeriana jatamansi Jones on THP1 mRNA expression of IBS rats induced by chronic stressMethods:Animals were randomly divided into 6 groups:normal group,model group, OSD group,FXT group,MSP group and Iridoids composition of Valeriana jatamansi Jones groups.

表明蜘蛛香环烯醚萜不影响色氨酸羟化酶的转录表达。3.1.3蜘蛛香环烯醚萜对5-HT受体的影响目的：探讨蜘蛛香环烯醚萜对慢性应激所致IBS大鼠5-HT3受体mRNA表达的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组，除对照组外，其余各组进行慢性应激实验。

Sugar water choosed degree have no significant change. It means that Iridoids composition of Valeriana jatamansi Jones has central inhibitory action.2.2 Effection of Iridoids composition of Valeriana jatamansi Jones on weight and food intake of IBS rats induced by chronic stressAnimals were randomly divided into 7 groups:normal group,model group, OSD group,FXT group and Iridoids composition of Valeriana jatamansi Jones groups in quantiy of 24.92mg/kg,12.46mg/kg,6.23mg/kg.

蜘蛛香环烯醚萜可以减缓正常小鼠的胃肠运动和利血平化小鼠的胃肠功能亢进，降低慢性应激所致IBS模型大鼠的内脏敏感性，显著减少了IBS模型大鼠的排便数量，从而改善腹泻型IBS的临床症状。2蜘蛛香环烯醚萜对神经系统功能的影响目的：探讨蜘蛛香环烯醚萜对精神活动的影响2.1蜘蛛香环烯醚萜对慢性应激所致IBS大鼠精神活动的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组，除对照组外，其余各组进行慢性应激实验。

It is speculated that this components feedback adjusting the this receptor\'s expression through receptor-binding with 5-HT3A receptor.3.3 Effection of Iridoids composition of Valeriana jatamansi Jones on THP1 mRNA expression of IBS rats induced by chronic stressMethods:Animals were randomly divided into 6 groups:normal group,model group, OSD group,FXT group,MSP group and Iridoids composition of Valeriana jatamansi Jones groups.

表明蜘蛛香环烯醚萜不影响色氨酸羟化酶的转录表达。3.1.3蜘蛛香环烯醚萜对5-HT受体的影响目的：探讨蜘蛛香环烯醚萜对(来源：ABC论文aaaaaa网www.abclunwen.com)慢性应激所致IBS大鼠5-HT3受体mRNA表达的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组，除对照组外，其余各组进行慢性应激实验。

It means that Iridoids composition of Valeriana jatamansi Jones has central inhibitory action.2.2 Effection of Iridoids composition of Valeriana jatamansi Jones on weight and food intake of IBS rats induced by chronic stressAnimals were randomly divided into 7 groups:normal group,model group, OSD group,FXT group and Iridoids composition of Valeriana jatamansi Jones groups in quantiy of 24.92mg/kg,12.46mg/kg,6.23mg/kg.

蜘蛛香环烯醚萜可以减缓正常小鼠的胃肠运动和利血平化小鼠的胃肠功能亢进，降低慢性应激所致IBS模型大鼠的内脏敏感性，显著减少了IBS模型大鼠的排便数量，从而改善腹泻型IBS的临床症状。2蜘蛛香环烯醚萜对神经系统功能的影响目的：探讨蜘蛛香环烯醚萜对精神活动的影响2.1蜘蛛香环烯醚萜对慢性应激所致IBS大鼠精神活动的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组，除对照组外，其余各组进行慢性应激实验。

Research on the Iridoids composition of Valeriana jatamansi Jones in the role of mechanism of action of rat model induced by chronic stress3.1 Effection of Iridoids composition of Valeriana jatamansi Jones on 5-HT and 5-HIAA in colon,serum and central of IBS rats induced by chronic stressMethods:Animals were randomly divided into7 groups:normal group,model group, OSD group,FXT group and Iridoids composition of Valeriana jatamansi Jones groups in quantiy of 24.92mg/kg,12.46mg/kg,6.23mg/kg.

同时，蜘蛛香环烯醚萜可显著降低醋酸所致小鼠的扭体次数，说明其有良好的镇痛作用。3蜘蛛香环烯醚萜治疗肠易激综合征机理3.1蜘蛛香环烯醚萜对5-HT神经递质的影响3.1.1蜘蛛香环烯醚萜对外周和中枢5-HT含量的影响目的：探讨蜘蛛香环烯醚萜对慢性应激所致IBS大鼠结肠、血清和脑中5HT、5-HIAA的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组，除对照组外，其余各组进行慢性应激实验。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐