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| 1 | Age-related Changes of Carbon Accumulation and Allocation in Plants and Soil of Black Locust Forest on Loess Plateau in Ansai County, Shaanxi Province of China显示文摘在高原生态系统吸引了的瓷器黄土的碳(C) 隐遁上的重新造林的效果很在最近的年里研究注意。黑蝗虫树(Robinia pseudoacacia L.) 在重新造林和水和土壤保存努力为他们的重要使用被珍视。这种森林类型越过黄土高原是普遍的,并且一定是任何在这个易碎的生态的区域为 C 隐遁努力计划的一个必要部件。在重新造林仍然保持不明确以后,看台的长期的效果在 C 累积和分配上变老。我们在黄土高原上检验了黑蝗虫森林(后来种的 5, 9, 20, 30, 38,和 56 年) 的年龄顺序在植物(树,灌木,牧草,和叶垃圾) 和土壤(0100 厘米) 评估 C 累积和分配。Allometric 方程为估计树部件的生物资源被开发(叶,树枝,茎没有吠叫,吠叫并且根) 与一个破坏采样方法。我们的结果证明那个黑蝗虫森林生态系统常常积累了 C,从 31.42 Mg C/ 哈(1 Mg = 10 < 啜 class= “ a-plus-plus ” > 6 g ) 在到在 38 年的 79.44 Mg C/ha 的 5 年。在旧森林阶段(38 ~ 56 年) ,在植物生物资源的 C 的数量显著地减少了(从 45.32 ~ 34.52 Mg C/ha ) 由于树的高死亡。然而,旧森林能在土壤连续地积累 C (从 33.66 ~ 41.00 Mg C/ha ) 。在灌木生物资源的 C 与看台年龄增加了,当在牧草层和叶垃圾的 C 股票是年龄无关的时。重新造林在森林土壤导致了 C 重新分配。C 存货与看台年龄常常增加了的表层土(020 厘米) 。然而,在 2030, 3050, 50100,和 20100 厘米层,在亚顶土壤的 C 存储是年龄无关的。这些结果建议作为一个时间的因素,继任在植被在地区性的 C 动力学在黑蝗虫森林里并且也在 C 累积和重新分配起一个关键作用。 | LI Taijun LIU Guobin | 2014 | Chinese Geographical Science2014，24，4： | 11 |
| 2 | DYNAMIC BEHAVIORAL MODELING FOR STRONGLY NONLINEAR DOHERTY PAS USING REAL-VALUED TIME-DELAY RECURRENT RBF MODEL显示文摘This paper proposes a Real-Valued Time-Delay Recurrent Radial Basis Function (RVTDRRBF) model suitable for dynamic modeling of the strongly nonlinear behaviors of the Doherty Power Amplifiers (DPAs). This model has four Tapped Delay Lines (TDLs), which account for the memory effect of the DPA. The structure of the RVTDRRBF model is simpler than the traditional FeedForward Neural Networks (FFNNs) model. Weights and centers of the proposed model can be resolved by the Orthogonal Least Square (OLS) and Singular Value De-composition (SVD) algorithm. A three-carrier Wideband Code Division Multiple Access (WCDMA) signal is taken as the test signal. The simulation results in frequency-domain and time-domain for a DPA with 51 dBm output illustrate a good agreement between the RVTDRRBF model and measurement data. Moreover, comparing the Normalized Mean Square Error (NMSE) of RVTDRRBF model, memory polynomial model and RVTDRBF model, it can be noticed that the proposed RVTDRRBF model is more accurate than the RVTDRBF model and the memory polynomial model in modeling the strong dynamic nonlinearity of the DPAs. | Hui Ming Liu Taijun Ye Yan Zhang Haili Shen Dongya Li Liang | 2012 | Journal of Electronics(China)2012，29，1： | 4 |
| 3 | Augmented hammerstein predistorter for linearization of broadband wireless transmitters 显示文摘 | Liu Taijun Boumaiza Slim Ghannouchi F M | 2005 | Microwave Theory and Techniques2005，54，4： | 1 |
| 4 | Dynamic behavioral medeling of 3G power amplifiers using real-valued time-delay neural networks 显示文摘 | Liu Taijun Boumaiza S Hannouchi F | 2004 | IEEE Trans on Microwave Theory Techniques2004，52，3： | 1 |
| 5 | Deembedding static nonlinearities and accurately identifying and modeling memory effects in wide-band RF transmitters 显示文摘 | Liu Taijun Boumaiza Slim Ghannouchi F M | 2005 | Microwave Theory and Techniques2005，53，11： | 1 |
| 6 | Deembedding Static Nonlinearities and Accurately Identifying and Mod- eling Memory Effects in Wide - band RF Transmitters 显示文摘 | Taijun Liu Slim Boumaiza Fadhel M Ghannouchi | 2005 | IEEE Transactions on Microwave Theory and Techniques2005，，5： | 1 |
| 7 | INDEPENDENTLY-TUNED CONCURRENT DUAL-BAND BRANCH-LINE COUPLER USING VARACTOR显示文摘This paper presents a concurrent dual-band branch-line coupler with an independently tunable center frequency. In the proposed architecture, the quarter-wavelength lines, which work at two separated bands concurrently and can be tuned in one of them, are key components. Based on the analysis of ABCD-matrix, a novel hybrid structure and a pair of varactors topology are utilized to achieve concurrent dual-band operation and independent tunability, respectively. Using this configuration, it is convenient to tune the center frequency of the upper band, while the responses of the lower band remain unaltered. To verify the proposed idea, a demonstration is implemented and the simulated results are presented. | Guo Xiaofeng Ye Yan Liu Taijun Xu Qian Li Ruiyang | 2014 | Journal of Electronics(China)2014，31，4： | 1 |
| 8 | PERFORMANCE IMPROVEMENT FOR A WCDMA RADIO OVER FIBER SYSTEM USING DIGITAL PRE-DISTORTER显示文摘In this paper,a Radio Over Fiber (ROF) system with a Digital Pre-Distorter (DPD) for WCDMA signal transmission is investigated.A Look-Up Table (LUT) based DPD and a Memory Polynomial (MP) DPD are applied in the ROF link so as to suppress the out-of-band spurious spectrum and improve the transmission performance.The experimental results show that the out-of-band emission due to existence of the third-order Inter-Modulation Distortion (IMD3) is obviously sup-pressed by these two DPD.An Adjacent Channel Power Ratio (ACPR) improvement of 8 dB is ob-tained for a single-carrier WCDMA signal transmission.These two DPD have equal ability in lin-earization of the ROF system for a three-carrier WCDMA signal transmission.There is no apparent memory effects exist in the ROF link. | Ying Xiangyue Xu Tiefeng Liu Taijun Nie Qiuhua | 2012 | Journal of Electronics(China)2012，29，1： | 1 |
| 9 | Dynamic behavioral modeling of 3G power amplifiers using real-valued time-delay neural networks显示文摘 | Liu Taijun Boumaiza S | 2004 | IEEE2004，，： | 1 |
| 10 | Pericyte protection by edaravone after tissue plasminogen activator treatment in rat cerebral ischemia显示文摘 | Kentaro Deguchi Ning Liu Wentao Liu Yoshio Omote Syoichiro Kono Taijun Yunoki Shoko Deguchi Toru Yamashita Yoshio Ikeda Koji Abe | 2014 | Journal of Neuroscience Research2014，，11： | 1 |
| 11 | Augmented Hammerstein predistorter for linearization of broad-band wireless transmitters显示文摘 | Liu Taijun Boumaiza S Ghanouchi F M | | 0，，06： | 1 |
| 12 | NONLINEAR CHARACTERIZATION OF CONCURRENT DUAL-BAND RF POWER AMPLIFIERS显示文摘In this paper, the synchronous concurrent dual-band RF signal is used to drive the RF Power Amplifier (PA). The nonlinear characterization of a concurrent dual-band RF PA is discussed while two band signals in the dual-band are modulated by CDMA2000 and WCDMA signals. When the two band signals in the dual-band of the PA are modulated with the same signals, it is found that the nonlinearity of the PA can be expressed by any of the two corresponding baseband data. On the other hand, when the two band signals in the dual-band of the PA are modulated with two different signals, the PA nonlinearity cannot be characterized by any of the two corresponding baseband data. In this case, its nonlinearity has to be denoted by a composite signals consisting of the two baseband signals. Consequently, the requirements for the speed of the A/D converter can be largely reduced. The experimental results with CDMA2000 and WCDMA signals demonstrate the speed of the A/D converter required is only 30 M Sample Per Second (SaPS), but it will be at least 70 M SaPS for the conventional method. | Hui Ming Liu Taijun Ye Yan Zhang Haili Shen Dongya Li Liang | 2012 | Journal of Electronics(China)2012，29，3： | 0 |
| 13 | Identification and characterization of related substances in EVT-401 by hyphenated LC–MS techniques显示文摘A sensitive and selective method was developed for the separation and characterization of related substances(RSs) in EVT-401 by hyphenated LC–MS techniques. Complete separation of the RSs was achieved with an Inertsil ODS-SP column(250 mm×4.6 mm, 5 μm) by linear gradient elution using a mobile phase consisting of 0.2% formic acid solution, methanol and acetonitrile. EVT-401 was found to be susceptible to acid, alkaline and oxidative stresses, while relatively stable under photolytic and thermal dry stress conditions. Fourteen RSs including six process-related substances and eight degradation products were detected and identified in EVT-401 with positive ESI high-resolution TOF-MS analysis of their parent ions and the corresponding product mass spectra elucidation, and some of them were further verified by chemical synthesis and NMR spectroscopy. The specific LC–MS method developed for separation, identification and characterization of RSs is valuable for EVT-401 manufacturing process optimization and quality control. | Binan Zhu Yuting Lu Leilin Chen Binbin Yu Yuexin Liu Min Song Taijun Hang | 2017 | Journal of Pharmaceutical Analysis2017，7，4： | 0 |
| 14 | NOVEL ELECTRONIC TUNER USING VARACTORS FOR TUNABLE RF FRONT-ENDS显示文摘This paper presents a novel electronic tuner with high power handling capability utilizing varactors based on the asymmetric bilateral coupled microstrip transmission line. Through varying the bias voltage of the varactor at the Ultra High Frequency (UHF) band, the performance of the tuner is demonstrated according to simulated and measured results from several cases with the return loss (S11 ) below -20 dB and the insertion loss (S21 ) within ±0.5 dB. Compared with tuners using p and t network, electronic tuner of this paper shows superior frequency agility as well as wide impendence coverage. Advanced biasing structure has been developed to improve power handling for high power level applications. It is expected that the novel tuner would be part of intelligent Radio Frequency (RF) front-ends system and cognitive wireless system in the future. | Li Liang Liu Taijun Ye Yan Zhang Haili Hui Ming Li Jun Wen Huafeng | 2013 | Journal of Electronics(China)2013，30，3： | 0 |
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