特性

It was suggested that the capacities of parthenogenesis and apogamy of rice were used to obtain stable lines in early hybrid generations.And several characteristics such as apomixis,cleistogamy,superior genes of qualities and resistance to disease and pest were combined and were used to search a new pathway of selecting high yield,superior quality and heteroresistance to diseases and pest,and lead to realize the purpose of fixing heterosis by apomixis.

利用水稻的孤雌生殖和无配子生殖能力，获得早世代稳定品系，建立快速育种方法，把无融合生殖特性与闭颖授粉、优质、抗性等特性结合探索高产优质多抗育种新途径，逐步实现利用无融合生殖固定杂种优势的目的。2。

Only one complete corollinae chromosome was detected in Ml4, and was determined corollinae chromosome 9. We have used in situ hybridization of genomic DNA to discrimination the parental chromosomes in Beta Ml 4, suppression of cross-hybridization by blocking DNA was not necessary indicating that the investigated Beta genome contain sufficient species-species DNA enabling the unequivocal determination of genomic composition of the hybrids.In our study , the results of BAC -FISH combined with the analysis of GISH in Beta M14,indicating that present of the corollinae chromosome 9 alone was sufficient to confer apospory in Beta M14 upon celluar and molecular..

BAC克隆16-M11和26-L15携带M14花期特异表达的基因；在M14甜菜对应的有性栽培甜菜染色体上没有出现信号，呈半合子状态；包含的单或低拷贝DNA序列在野生白花甜菜进化过程是共线的；两个BAC克隆部分同源；位于末端重组抑制区，所有这些不同寻常的特性都暗示着：BAC克隆16-M11和26-L15和无融合生殖特性相关，可作为无融合生殖

Objective:To study the effect of water content in soil on physiological characters and yield of Artemisia annua.

中文摘要：目的：对不同土壤水分下黄花蒿生理及产量特性进行分析，研究黄花蒿抗旱生理及需水特性。

The results suggested that the hypovir-ulence - associated genetic elements existed in the cells of isolate Ep- 1PN unequally, andsome cells were shortage of the hypovirulence- associated genetic elements.1572 sexual progenies of isolate Ep- 1PN were obtained through single- ascospore -isolation from seven apothecia.

本文对核盘菌Ep-1PN菌株的弱毒特性及其相关特性的遗传特点进行了分析，并评估了Ep-1PN菌株及其弱毒因子防治菌核病的生防潜能，现将结果报道如下

The distributions of the chain radius of gyration and the two-dimensional asphericity are measured. It is found that the DNA molecules exhibit highly anisotropic shape even for circular-form and the mean asphericity is chain length independence.

从测量二维的鍊回旋半径分布发现DNA分子展现高度的非等向性的形状(甚至是环形的DNA也具备此特性)且此特性与鍊长无关。

We indicate that when wavelength number is larger than 16, even 8, all of the networks show good small blocking performance. Further, we discuss different aspects that affecting blocking, including routing, wavelength number, wavelength assignment, wavelength conversion, multi-fiber and network connectivity. We find out that increasing wavelength or implementing multi-fiber can reduce blocking dramatically while in light loads (＜0.4Er), fixed alternate routing or First Fit wavelength assignment can improve the performance to some extent.

为了进一步获得更优的阻塞特性，研究比较了影响阻塞率的几个重要方面，包括路由（固定路由与固定可选路由）、波长数与波长分配算法、波长变换与多光纤、网络连接度，结果表明阻塞特性通过增加波长或采用多光纤可以得到明显的改善，在负载较轻时(＜0.4Er)，改用可选路由方式或First Fit波长分配算法也可以一定程度地改善阻塞率，但是这种改善受网络连接度和波长数的影响比较明显。

The study has focused on: 1 The research background and the current state of the power measurement were analyzed systematically, and then wavelet-based power measurement algorithm was certified feasible for astable signals; 2 We developed a new method of RMS and power measurement based on Dmeyer wavelet. After that three other wavelet measurement approaches were compared with Dmeyer wavelet-based measurement approach. Then the impact on measurement errors of amplitude frequency property and energy leakage of wavelet filter banks were deeply researched, and some measures were proposed to reduce it; 3 We developed a new strategy of power measurement algorithm based on lifting wavelet, which had calculation advantage compared with the first wavelet, so that it was more suitable for the realization of hardware; 4 The running system of wavelet-based power measurement algorithm based on DSP was proposed, and then it was realized on ICETEK-VC5416-A EVM board; 5 Existing problems and the further research direction of wavelet-based power sub-band measurement algorithm was discussed.

本文对基于小波变换的功率测量算法展开深入的分析研究，主要内容有：1）系统地分析了功率分解测量的研究背景、国内外的研究现状，并从能量守恒的角度验证了小波功率分频带测量算法在非平稳信号条件下的可行性；2）首次提出了Dmeyer小波变换有效值与功率的测量方法，进而通过对该方法与3种已经提出的小波测量方法的对比分析，深入研究了小波滤波器组的幅频特性和能量泄漏特性对测量误差的影响，并针对电网谐波的特点提出了减小影响的相关措施；3）首次提出了二代小波功率测量算法，对比一代小波功率分频带测量算法，它大大减少了算法实现的运算量及内存的需求量，从而更适合于硬件的实时实现；4）提出了小波功率分频带测量算法的DSP实现方案，并在ICETEK-VC5416-A EVM板上进行了实现；5）探讨了小波功率分频带测量算法目前仍存在的问题，并提出了进一步的研究方向。

So the study on the dynamical characteristics of the ASU is important to the dynamical characteristics and control system of the overall IGCC plant.

因此IGCC空分系统动态特性的研究对于IGCC全电站动态特性和控制系统的研究也有很重要的意义。

It includes stability analysis and control of gyroscopic system, analog controller optimization, stability analysis of an active magnetic bearing rotor system based on a full-order or a reduced-order observer, and identification of dynamic coefficients of asymmetric system.

本文主要研究了主动磁轴承转子系统的稳定性、控制器设计和系统动特性参数辨识问题，包括陀螺效应对系统稳定性的影响和抑制方法；模拟控制器的设计和带全阶观测器的系统性能分析；对非对称结构系统动特性系数辨识的研究。

Vibration Modal analysis and parameters identify is an analysis method which is used in "athwart question" in the Structure Dynamics.

模态分析的最终目标是识别出系统的模态参数，为结构系统的振动特性分析、振动故障诊断与预报以及结构动力特性的优化设计提供依据。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。