排序方式: 共有24条查询结果,搜索用时 513 毫秒
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Jing?Zhou Yuqi?Liu Liming?Tang Xinchen?Teng Ning?Tang Zhongxian?HuangEmail author 《中国科学B辑(英文版)》2003,46(1):64-74
Two mutants of the zinc finger protein, ZNF191 (243–368) I323W and R327W, are successfully obtained by site-directed mutagenesis.
The fluorescence spectrum is used to study the interaction between these two mutants and the oligonucleotides. The influence
of the mutation on the interaction has been studied using ethidium bromide (EB) as the fluorescence probe. The binding constants
of the I323W-DNA and R327W-DNA have been calculated and the possible binding models have been discussed. 相似文献
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María M. Martínez 《Journal of Mathematical Analysis and Applications》2011,375(1):196-206
Let X be a Banach space and let f∈L∞(R+;X) whose Laplace transform extends analytically to some region containing iR?{0}, possibly having a pole at the origin. In this paper, we give estimates of the decay of certain slight suitable modification of f in terms of the growth of its Laplace transform along the imaginary axis. This technique is applied to obtain decay estimates of smooth orbits of bounded C0-semigroups whose infinitesimal generators have an arbitrary finite boundary spectrum. These results are close to those given recently by C.J.K. Batty and T. Duyckaerts. 相似文献
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无人机视频数据的实时压缩处理是无人机的关键技术之一。本文以DM368为核心处理器,以嵌入式Linux为板级操作系统,设计出一套可供无人机使用的低功耗视频实时压缩系统。与传统的嵌入式视频H264软件编码压缩系统相比,本系统依赖DM368内嵌的视频协处理硬核处理H264编码,具有功耗低,处理延迟小,外部电路简单等诸多优势。同时系统以嵌入式Linux为板级操作系统,实时性强,可稳定高效的管理视频采集、硬核调度、串口通讯、数据输出等诸多任务。试验结果表明,本系统在处理PAL制式为视频源的H264编码任务时,平均功耗仅为1.5W,具有功耗低、成本低、体积小、重量轻、实时性强等诸多优势,能够满足无人机视频压缩的应用需求。 相似文献
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基于TMS320DM368的高清视频采集系统设计与实现 总被引:1,自引:1,他引:0
实现了基于TMS320DM368嵌入式处理器的高清视频采集系统,详细介绍了系统的总体架构及主要的软硬件模块。首先,分析了核心处理模块性能及硬件采集模块功能;其次,描述了高清视频采集、处理及传输等模块的软件实现流程,给出了在嵌入式Linux平台下基于Web服务器移植的实现过程;最后,对系统进行测试,结果表明本系统达到了预期的高清视频采集及传输功能,图像清晰度高,实时性好,可以很方便地应用在需要高清视频监视的场合。 相似文献
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A general form of Jordan-type double inequality for the generalized and normalized Bessel functions 总被引:1,自引:0,他引:1
Ling Zhu 《Applied mathematics and computation》2010,215(11):3802-3810
In this note, a general form of Jordan-type double inequality involving the generalized and normalized Bessel functions is presented, and then some recent results concerning generalized and sharp work of Jordan’s inequality are extended. At the same time, the applications of the results above give two new infinite series for sinx/x and sinhx/x. 相似文献
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F.J. García-Pacheco J.B. Seoane-Sepúlveda 《Journal of Mathematical Analysis and Applications》2007,326(2):929-939
We show that, in analysis, many pathological phenomena occur more often than one could expect, that is, in a linear or algebraic way. We show this by means of the construction of large algebraic structures (infinite dimensional vector spaces or infinitely generated algebras) enjoying some special or pathological properties. 相似文献
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当前,视频监控特别是IP视频监控在工业与商业环境和交通运输领域的应用不断扩大,在某些领域,对1080p全高清视频的需求也在逐渐显现。德州仪器不久前面向这一市场推出了一款支持低功耗、高清(HD)视频处理的全新IP摄像 相似文献
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Hiroyuki Yamase 《Journal of Physics and Chemistry of Solids》2008,69(12):3297-3300
We propose that cuprate superconductors are in the vicinity of a spontaneous d-wave type Fermi surface symmetry breaking, often called a d-wave Pomeranchuk instability. This idea is explored by means of a comprehensive study of magnetic excitations within the slave-boson mean-field theory of the t-J model. We can naturally understand the pronounced xy anisotropy of magnetic excitations in untwinned YBa2Cu3Oy and the sizable change of incommensurability of magnetic excitations at the transition temperature to the low-temperature tetragonal lattice structure in La2-xBaxCuO4. In addition, the present theoretical framework allows the understanding of the similarities and differences of magnetic excitations in Y-based and La-based cuprates. 相似文献