查询词典 RF

Diagnostic performances of anticyclic citrullinated peptides antibody and antifilaggrin antibody in Korean patients with rheumatoid arthritis.

AKA、APF、RF和抗CCP抗体在类风湿关节炎诊断和鉴别诊断中的应用。医学检验与临床 2006， 17(6)： 35-37.56 潘解萍，谢雯。抗环瓜氨酸肽抗体在类风湿关节炎早期诊断中的临床意义。

PLT, PCT were positively correlated with CD62P, IgG, ESR, CRP, RF, arthrpain, arthrocele. And PLT was positively correlated with arthrtenderness, morning stiffness time.

PLT、PCT与CD62P、免疫球蛋白G、血沉、C反应蛋白、类风湿因子、关节疼痛、关节肿胀呈正相关关系，PLT还与关节压痛和晨僵时间呈正相关关系。

Owing to the reducing of ballasting resistance, RF power HBT will provide higher output power, power gain, and power-added efficiency in an amplifier block.

由于R的减小，功率HBT将能提供更大的输出功率、功率增益和功率附加效率。

Using the proposed scheme,the biplanar transverse gradient coil for open MRI system and theRF phase array coils are designed.

采用提出的方法，本文设计了开放型MRI系统中的双平面横向梯度线圈和应用于并行成像的RF相控阵线圈。

The tryptophan residues play important roles in DNA photoreactivation catalyzed by CPD photolyases. We have investigated the action mechanism concerning Trp in DNA photoreactivation, and obtained the results as follows: 1 We proposed a mechanism of photosensitized splitting of CPDs by Trp and Trp-containing peptides. 2 Quantum yields of splitting of the model compounds that a Trp linked covalently a CPD were obtained under 290 nm light in various solvents, these values changing with solvent, range from 0.01 to 0.5. 3 Utilizing pulse radiolysis technique, splitting processes were observed in aqueous solution of the CPDs with hydrated electron and some oxidative species (such as hydroxyl radical, bromic radical and azide radical), and obtained their rate constants. In the case of interaction between CPD and hydrated electron, splitting of the CPD anion, and pyrimidine anion transfer an electron to FAD or Rf, were observed. The process rate was slower one order more than that in photolyase. Minor, but highly mutagenic UV-light-induced lesions are (6-4) photoproducts, which are repaired by (6-4) photolyases. These enzymes, discovered in 1993, are not well characterized and their mechanism is still under investigation.

我们研究它的作用机理，获得以下结果：1）建立了色氨酸及其肽对嘧啶二聚体光敏化裂解的直接修复作用机理模型；2）获得了色氨酸共价键连接于嘧啶二聚体的化合物在多种溶剂中290nm光辐照裂解的量子效率，其值随溶剂而变化，范围在0.01-0.5；3）运用脉冲辐解观察到嘧啶二聚体与水合电子和一些氧化性的自由基作用裂解过程，得到相应速率常数；对二聚体与水合电子作用发生裂解以及向FAD返还电子的过程进行了体外模拟；4）（6-4）光解酶的作用机理中一个关键假定是氧杂环丁烷中间体在接受电子后能自发裂解，恢复二嘧啶的结构。

Ashi points were selectedmostly, cooperated with selecting points along the pathway of charmel andaccording to differentiation of syndrome.

本研究系统地观察了治疗前后RA患者关节疼痛、压痛、肿胀、障碍指数、晨僵、握力、20米步行时间、BSR、CRP、RF、IgA、IgG、IgM等指标的变化。

By time-varying filtering, we realize the signal selectivity and interference suppression, especially for the signals with time-varying power spectrum. It is shown herein that conventional eigenstructure based methods are lower dimensional special case of the time-frequency subspace fitting method. The closed-form array response estimation algorithms for blind source separation in wireless communication is also developed in the dissertation by exploiting the data structure of second-order statistics of the array output in the presence of multipath. The proposed method achieves array response estimation with little constraint on signal property and propagation environment such as scatters or angular spread. Moreover, the array utilized here can be of arbitrary geometry and even uncalibrated. Since the closed-form solution is obtained, no misconvergency may occur and large amount of computation can be saved. The equivalent feed model and corresponding optimization designation are proposed to realize the downlink multi-user selective transmission. By coherent and non-coherent superposition of the electromagnetical field, multiple beams can be formed using a single array, so that each co-channel user signal is transmitted in each beam and will not interfered with each other. The proposed system scheme implements the digital beamforming and the channel allocation in the base band, therefore is suitable for the utilization of the radio software technology. The feasibility and effectiveness of the proposed model are proved by the RF experiment.

在窄带条件下，GSC－SSF方法还可以提高阵列的虚拟孔径，从而提高估计的性能；可以证明，Cyclic DOA 和SC-SSF方法可看作该方法的特例或近似； 3、提出了二维GSC－SSF方法和宽带谱相关DOA矩阵方法，利用信号的循环平稳特性解决了宽带条件下二维 DOA 估计问题，并具有阵元数少、计算量较小的特点； 4、提出了时频子空间拟合和宽带时频DOA估计算法，将联合时频分析的理论和方法引入到阵列信号的空间谱估计研究中，利用时变滤波实现信号选择性测向和干扰抑制，特别适合于谱时变信号；可以证明传统特征结构法可看作是时频子空间拟合方法的特例； 5、提出了多用户环境下阵列响应的估计方法——CARE方法，该方法对信号结构和传播参数（主要是散射源分布与角度散布）的约束较少，适用于各种几何结构的阵列甚至未校准的阵列，能够直接得到阵列响应的闭式解，因此计算量小、稳健性好，不存在收敛问题； 6、提出了针对多用户下行选择性发送的阵列等效激励模型、优化设计方法及其系统实现方案，通过空间场的相干叠加与非相干叠加使得单一阵列能够形成多个波束，并保证各波束内的用户信号各不相同且相互干扰最小；其系统方案具有在基带实现数字波束成形、信道分配并便于软件无线电实现的特点，其有效性已得到外场实测数据的证实。

Measurement of internal parameters of electrooptically Q-switched RF excited waveguide CO2 laser using rotatable phase plate .

旋转波片法测量电光调Q射频波导CO2激光器的内部参数。

Study of electrooptically Q-switched RF excited CO2 waveguide laser with line selected by grating.

光栅选支电光调Q射频激励CO2激光器研究。

In this thesis, an introduction to FELs and high brightness injectors is given and the properties of electron beam for BFEL must have are discussed briefly. Then the author's contributions to BFEL are reported, which contains two main parts, one is theoretical and experimental research of the RF-gun, another is the design and fabrication of the beamlines.

本文简要介绍了自由电子激光器和高亮度注入器的发展，讨论了自由电子激光对束流品质的要求，然后报告了作者在BFEL上所做的工作，主要包括两个部分，其一是微波枪的理论和实验研究，其二是束流输运线的设计和制造。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。