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    • 2. 发明申请
    • Nucleic acid molecules encoding hyperactive nucleoside di-phosphate kinase 2 and uses thereof
    • US20070136897A1
    • 2007-06-14
    • US11247236
    • 2005-10-12
    • Jeong-II KimYun-Jeong HanSeong-Hee KimPill-Soon Song
    • Jeong-II KimYun-Jeong HanSeong-Hee KimPill-Soon Song
    • A01H1/00C07H21/04C12N5/04C12N15/82
    • C12N9/1229C12N15/8261C12N15/8271Y02A40/146
    • The present invention includes modified Arabidopsis Nucleoside Di-Phosphate Kinase 2 (NDPK2) nucleic acid molecules whose enzymatic activity have been increased (i.e. hyperactive). NDPKs are ubiquitous housekeeping enzymes that catalyze the transfer of γ-phosphoryl group from a nucleoside triphosphate (NTP) to a nucleoside diphosphate (NDP), and also multifunctional proteins that regulate a variety of eukaryotic cellular activities, including cell proliferation, development, and differentiation. In plants, NDPKs are reported to play a key role in the signaling of both stress and light. Among three NDPKs (NDPK1, NDPK2, NDPK3) in a model plant, Arabidopsis thaliana, NDPK2 was reported as a positive signal transducer of phytochrome-mediated plant light signaling and to regulate cellular redox state, which enhances multiple stress tolerance in transgenic plants. Thus, the plants with the hyperactive NDPK2 are expected to possess higher efficiency of light utilization and enhanced tolerance to various environmental stresses such as cold, salt, and oxidative stresses. Since abiotic stress is one of the most important factors to limit the productivity of many crops, the hyperactive NDPK2 can be used for the development of high-yielding multiple stress tolerant plants with higher efficiency of light utilization. In this invention, several hyperactive NDPK2 were generated by C-terminal deletion and site-directed mutagenesis. Therefore, the present invention can be utilized to develop multiple stress tolerant and efficiently light-utilizing plants, which can eventually increase crop yields. The invention also includes plants having at least one cell expressing the modified NDPK2, vectors comprising at least one portion of the modified NDPK2 nucleic acids, and methods using such vectors for producing plants with enhanced light sensitivity and stress tolerance.
    • 3. 发明授权
    • Encoding device and method and multimedia apparatus including the encoding device
    • 包括编码装置的编码装置和方法以及多媒体装置
    • US08948242B2
    • 2015-02-03
    • US13256846
    • 2010-03-17
    • Seong Hee Kim
    • Seong Hee Kim
    • H04N7/12H04N11/02H04N11/04H04N19/124H04N19/152H04N19/176H04N19/115H04N19/177
    • H04N19/0009H04N19/115H04N19/124H04N19/152H04N19/176H04N19/177
    • An encoding device and method of using a bit rate control method which accurately predicts a target bit amount, provides excellent quality, and is applicable to a real-time environment through a simple mechanism, and a multimedia apparatus including the encoding device. The encoding device includes a group-of-pictures (GOP)-based bit assigning unit for assigning a GOP-based bit amount targetGOP, a macroblock-based bit assigning unit for assigning a macroblock-based bit amount for all macroblocks included in the GOP, a quantizing device for checking a current buffer state, determining a quantization parameter (QP) by using an alternating current (AC) coefficient obtained by transforming a macroblock if a buffer occupancy rate is lower than a predetermined limit rate, and performing quantization by using the determined QP, and a variable length coding (VLC) unit for performing VLC.
    • 使用精确地预测目标比特量的比特率控制方法的编码装置和方法,提供优异的品质,并且可以通过简单的机制适用于实时环境,以及包括编码装置的多媒体装置。 编码装置包括用于分配基于GOP的比特量目标GOP的基于图像(GOP)的比特分配单元,基于宏块的比特分配单元,用于为GOP中包括的所有宏块分配基于宏块的比特量 ,用于检查当前缓冲状态的量化装置,如果缓冲器占用率低于预定极限速率,则使用通过对宏块进行变换而获得的交流(AC)系数来确定量化参数(QP),并且通过使用 所确定的QP和用于执行VLC的可变长度编码(VLC)单元。