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    • 11. 发明申请
    • Cloning Transcription Factor Gene OsWOX20 That Regulates The Growth and Development of Monocotyledon's Root and Uses Thereof
    • 克隆转录因子基因OsWOX20调节单子叶根的生长发育及其应用
    • US20110160444A1
    • 2011-06-30
    • US12668391
    • 2008-06-26
    • Yu ZhaoDaoxiu Zhou
    • Yu ZhaoDaoxiu Zhou
    • C07H21/04
    • C12N15/8227C07K14/415C12N15/8261Y02A40/146
    • he present disclosure pertains to the field of plant genetic engineering. Specifically, the present disclosure relates to isolation and cloning, function verification, and use of a transcription factor gene OsWOX20 that regulates growth and development of roots of monocotyledons. According to the present disclosure, a transcription factor gene Os WOX20 DNA is isolated which regulates growth and development of roots of rice, and has (a) the DNA sequence of positions 1-786 in SEQ ID NO: 1 in the Sequence Listing, or (b) a DNA sequence that encodes the same protein as that encoded by the DNA sequence of (a). The promoter according to the present disclosure has the DNA sequence of positions 1-2078 in SEQ ID NO: 3 in the Sequence Listing. The cloned gene sequence is used to transform a rice variety and transgenic rice plants showing markedly improved growth and development of roots are obtained. The promoter drives the specific expression of a reporter gene in the roots of rice. The present disclosure shows that the cloned target gene and its promoter have a great prospect in their use in breeding transgenic plants having improved growth and development of roots.
    • 他的揭示涉及植物基因工程领域。 具体地,本公开涉及分离和克隆,功能验证和调节单子叶根生长和发育的转录因子基因OsWOX20的使用。 根据本公开,分离调节水稻根系的生长发育的转录因子Os WOX20DNA,并且(a)序列表中SEQ ID NO:1中的位置1-786的DNA序列,或 (b)编码与(a)的DNA序列编码的蛋白质相同的蛋白质的DNA序列。 根据本公开的启动子具有序列表中SEQ ID NO:3中的位置1-2078的DNA序列。 克隆的基因序列用于转化水稻品种,并获得显着改善生长和转基因发育的转基因水稻。 启动子驱动水稻根中报道基因的特异性表达。 本公开显示克隆的靶基因及其启动子在用于育种具有改善的根的生长和发育的转基因植物中具有很大的前景。
    • 13. 发明申请
    • DIGITAL TUNABLE INTER-STAGE MATCHING CIRCUIT
    • 数字可调节间歇匹配电路
    • US20110043285A1
    • 2011-02-24
    • US12715254
    • 2010-03-01
    • Yu ZhaoBabak NejatiNathan M. PletcherAristotele Hadjichristos
    • Yu ZhaoBabak NejatiNathan M. PletcherAristotele Hadjichristos
    • H03F3/16
    • H03F1/42H03F1/223H03F3/193H03F2200/318H03H7/40
    • A tunable inter-stage matching circuit that can improve performance is described. In an exemplary design, an apparatus includes a first active circuit (e.g., a driver amplifier), a second active circuit (e.g., a power amplifier), and a tunable inter-stage matching circuit coupled between the first and second active circuits. The tunable inter-stage matching circuit includes a tunable capacitor that can be varied in discrete steps to adjust impedance matching between the first and second active circuits. In an exemplary design, the tunable capacitor includes (i) a plurality of capacitors coupled in parallel and (ii) a plurality of switches coupled to the plurality of capacitors, one switch for each capacitor. Each switch may be turned on to select an associated capacitor or turned off to unselect the associated capacitor. The tunable capacitor may further include a fixed capacitor coupled in parallel with the plurality of capacitors.
    • 描述了可以提高性能的可调谐级间匹配电路。 在示例性设计中,装置包括耦合在第一和第二有源电路之间的第一有源电路(例如,驱动器放大器),第二有源电路(例如,功率放大器)和可调谐级间匹配电路。 可调谐级间匹配电路包括可以在离散步骤中变化的可调谐电容器,以调整第一和第二有源电路之间的阻抗匹配。 在示例性设计中,可调谐电容器包括(i)并联耦合的多个电容器和(ii)耦合到多个电容器的多个开关,用于每个电容器的一个开关。 每个开关可以被接通以选择一个相关联的电容器或关闭以取消选择相关联的电容器。 可调谐电容器还可以包括与多个电容器并联耦合的固定电容器。
    • 15. 发明申请
    • METHOD AND SYSTEM FOR WEB DOCUMENT CLUSTERING
    • WEB文件聚类方法与系统
    • US20090070366A1
    • 2009-03-12
    • US12208644
    • 2008-09-11
    • Yu ZhaoJianqiang Li
    • Yu ZhaoJianqiang Li
    • G06F17/30
    • G06F17/30707G06F17/30705G06F17/30882
    • Method and System for web documents clustering are provided. The method for web documents clustering comprises the steps of: inputting a plurality of web documents; collecting information of the links and the directory structure of the inputted web documents; extracting, according to the collected links and directory structure, a hierarchical structure for the plurality of web documents; and generating and outputting, based on the extracted hierarchical structure, one or more clusters of the plurality of web documents. In some embodiments, the hierarchical relations of the generated clusters can also be outputted at the same time. Compared with the prior art, the method and system for web documents clustering according to the present invention can improve substantially the accuracy and efficiency of the web documents clustering.
    • 提供了Web文档聚类的方法和系统。 用于web文档聚类的方法包括以下步骤:输入多个web文档; 收集链接的信息和输入的web文档的目录结构; 根据收集的链接和目录结构提取多个web文档的分层结构; 以及基于所提取的分层结构生成和输出所述多个web文档中的一个或多个集群。 在一些实施例中,也可以同时输出所生成的集群的层次关系。 与现有技术相比,根据本发明的用于web文档聚类的方法和系统可以显着提高web文档聚类的准确性和效率。
    • 16. 发明授权
    • Pen voltage regulator for inkjet printers
    • 喷墨打印机笔电压调节器
    • US07410231B2
    • 2008-08-12
    • US11277032
    • 2006-03-20
    • Yu ZhaoChiew-Teng TohYih-Shun Ng
    • Yu ZhaoChiew-Teng TohYih-Shun Ng
    • B41J29/38
    • B41J29/393B41J2/04541B41J2/04548
    • A pen voltage regulator is provided for supplying a regulated pen voltage to one or more printheads of an inkjet printer. The pen voltage regulator includes: a regulator switch arranged between an input terminal and an output terminal; a linear lifting circuit connected to the regulator switch; a soft start circuit arranged between the regulator switch and the output terminal; an output filter arranged between the soft start circuit and the output terminal; and a pulse width modulation (PWM) controller connected to the linear filtering circuit. The PWM controller is arranged to provide a pulse width modulated control signal to the linear filtering circuit. The linear filtering circuit is configured to transmit a smoothed control signal to the regulator switch and to ensure that the regulator switch is operable in a linear region. The soft start circuit is configured to provide a soft-start mode of operation so as to prevent the generation of large inrush currents and to provide overload protection.
    • 提供笔电压调节器,用于向喷墨打印机的一个或多个打印头提供经调节的笔电压。 笔稳压器包括:调节器开关,布置在输入端子和输出端子之间; 连接到调节器开关的线性滤波电路; 软启动电路,布置在调节器开关和输出端之间; 布置在软起动电路和输出端子之间的输出滤波器; 以及连接到线性滤波电路的脉宽调制(PWM)控制器。 PWM控制器被布置成向线性滤波电路提供脉宽调制控制信号。 线性滤波电路被配置为将平滑的控制信号发送到调节器开关并且确保调节器开关在线性区域中可操作。 软启动电路被配置为提供软启动操作模式,以防止产生大的浪涌电流并提供过载保护。
    • 19. 发明授权
    • Stacked amplifier with diode-based biasing
    • 具有基于二极管的偏置的堆叠放大器
    • US08847689B2
    • 2014-09-30
    • US12711858
    • 2010-02-24
    • Yu ZhaoNathan M. Pletcher
    • Yu ZhaoNathan M. Pletcher
    • H03F3/04
    • H03F1/0283H03F1/301H03F3/189
    • Techniques for improving linearity of amplifiers are described. In an exemplary design, an amplifier (e.g., a power amplifier) may include a plurality of transistors coupled in a stack and at least one diode. The plurality of transistors may receive and amplify an input signal and provide an output signal. The at least one diode may be operatively coupled to at least one transistor in the stack. Each diode may provide a variable bias voltage to an associated transistor in the stack. Each diode may have a lower voltage drop across the diode at high input power and may provide a higher bias voltage to the associated transistor at high input power. The at least one transistor may have higher gain at high input power due to the higher bias voltage from the at least one diode. The higher gain may improve the linearity of the amplifier.
    • 描述了用于提高放大器线性度的技术。 在示例性设计中,放大器(例如,功率放大器)可以包括耦合在堆叠中的多个晶体管和至少一个二极管。 多个晶体管可以接收和放大输入信号并提供输出信号。 至少一个二极管可以可操作地耦合到堆叠中的至少一个晶体管。 每个二极管可以向堆叠中的相关联的晶体管提供可变偏置电压。 每个二极管可以在高输入功率下在二极管上具有较低的电压降,并且可以在高输入功率下向相关联的晶体管提供更高的偏置电压。 由于来自至少一个二极管的较高偏置电压,至少一个晶体管可能在高输入功率下具有更高的增益。 较高的增益可以提高放大器的线性度。
    • 20. 发明授权
    • Multi-antenna wireless device with power amplifiers having different characteristics
    • 具有不同特性的功率放大器的多天线无线设备
    • US08670797B2
    • 2014-03-11
    • US13253003
    • 2011-10-04
    • Bhushan Shanti AsuriYu Zhao
    • Bhushan Shanti AsuriYu Zhao
    • H04M1/00
    • H04B1/406H04B1/0064H04B1/0483
    • A wireless device with power amplifiers having different characteristics to support transmission on multiple antennas is disclosed. These power amplifiers may have different gain, different maximum output power levels, etc. in order to meet requirements of different wireless systems. In an exemplary design, an apparatus includes first and second power amplifiers having different characteristics. The first power amplifier amplifies a first input signal and provides a first output signal for a first antenna. The second power amplifier amplifies the first input signal or a second input signal and provides a second output signal for a second antenna, e.g., in a MIMO mode or a transmit diversity mode. Only the first or second power amplifier amplifies another input signal and provides another output signal to the first antenna, e.g., in a CDMA mode or a GSM mode.
    • 具有功率放大器的无线设备具有不同的特性以支持多个天线上的传输。 这些功率放大器可能具有不同的增益,不同的最大输出功率等级,以满足不同无线系统的要求。 在示例性设计中,装置包括具有不同特征的第一和第二功率放大器。 第一功率放大器放大第一输入信号并提供用于第一天线的第一输出信号。 第二功率放大器放大第一输入信号或第二输入信号,并且例如以MIMO模式或发射分集模式为第二天线提供第二输出信号。 只有第一或第二功率放大器放大另一输入信号,并且例如以CDMA模式或GSM模式向第一天线提供另一输出信号。