查询词典 selective

Recently, study on ion-selective electrodes with anti-Hofmeister selectivity pattern is an important and interesting project in the fields of electrochemistry and electroanalytical chemistry.

近年来，金属配合物作为载体呈现的反Hofmeister行为的阴离子选择性电极是电化学和电分析领域中公认的活跃研究课题。

Recently, study on ion-selective electrodes with anti-Hofmeister selectivity pattern is an important and interesting project in the fields of electrochemistry and electroanalytical chemistry.

研究发现，以呋喃甲醛甘氨酸合铜为载体的电极对水杨酸根离子有高的选择性并呈现出反Hofmeister选择序列行为。

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。

A flow injection system with electroosmotic driving, electrophoresis concentration and detection by ion-selective electrode has been presented.

提出一种电渗驱动，电泳富集和离子选择电极检测相结合的流动分析方法。

The stronge interaction between EMimBF4 and nitrobenzene, and its intermediates yielded in the process of electroreduction caused the selective reaction.

通过控制电位，可以选择性地合成氧化偶氮苯和偶氮苯；在EMimBF4中，硝基苯和水的浓度变化对电化学行为产生较大影响。

The results show that the developing sensors exhibit high sensitivity and selectivity due to high sensitive and selective electroreduction of PB for H2O2 at low potential and fast response and higher stability of the sensors are attributed to biocompatible microenviroment provided by the silica sol-gel and the 'sandwich' construction maintaining the enzyme activity.

研究结果表明：由于PB在低电位下对H_2O_2的高选择及高灵敏电催化还原，使得制备的酶电极具有高灵敏性和好的抗干扰性。

Methods Selective arterial catheter was used, and gelatin sponge processed by high temperature or chemoembolization was used to embolize the iliolumbar and internal iliac artery which nourished the tumor.

采用选择性动脉插管，用经高温处理的明胶海绵栓塞或化疗性栓塞供应肿瘤的腰动脉、髂内动脉。

Methods 17 cases super selective Embolize the bronchial artery of acute hemoptysis by antibiotics-anhydrousethanol-thread.

17例中、大量咯血病例，均经超选择性支气管动脉插管成功，全部采用&抗生素→无水乙醇→丝线粒沫/明胶海绵粒&栓塞病变区域分支血管；全部病例随访6～36个月。

Methods Random selective the light、midst and serious types of patients that the encephalic injury.

目的 探讨颅脑损伤后脑血管血流动力学改变与影像学和临床关系。

Methods Super selective chemoembolization of internal iliac artery was undertaken in 29 cases of advanced prostate cancer with surgical castration and endocrinotherapy was rendered; As control, 49 cases of advanced prostate cancer were given surgical castration and endocrinotherapy.

对49例晚期前列腺癌患者行内分泌治疗和去势手术常规综合治疗，对29例晚期前列腺癌患者进行常规综合治疗同时行双侧髂内动脉超选择化疗栓塞术。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。