子控制

Somatic embryogenesis and subsequent maintenance and plant regeneration from immature zygotic embryos of grapevine Vitis vinifera L.

以酿酒葡萄'神索'未成熟合子胚为外植体，通过植物生长调节剂、光照、温度等因素的控制，研究了葡萄体胚的产生、保存及植株再生。

In the subsystem of high-accuracy worktable, subdivision driver is applied in positioning of the worktable.

接着设计了控制系统的硬件平台，分别介绍了各子模块的实现和特点。

The activity of RNA interference is under control of promoter xylP, which can be induced by xylose.

RNA干扰的活性是由木糖诱导的启动子xylP控制的。

Self-pollination was brought as the essential reason for causing emptied seeds by former researchers. Based on those studies, potassium antimonate and electron microscopy were used to study the calcium distribution of pollens in the micropylar canal of self-pollinated and cross-pollinated ovules and morphological changes in certain cells undergoing programmed cell death from pollination to fertilization, and observation of histo-chemical changes during microgametopyte development was performed by paraffin section.

前人研究认为自交是华北落叶松产生空粒的主要原因，本论文在此基础，运用焦锑酸钾沉淀法配合电镜观察研究了传粉后到受精前异交控制和自交辅助授粉胚珠珠孔道内花粉的钙分布情况，及此过程中细胞程序化死亡超微结构的变化，并通过石蜡切片研究了华北落叶松传粉后到受精前雌配子体发育过程及细胞内含物的变化，以研究在受精前胚珠内是否存在花粉识别与选择系统，探讨钙信号传导和花粉与胚珠相互作用及细胞程序化死亡的关系。

Canarium album Raeusch ;Gallic acid;HPLC; Quality control

青果；没食子酸；高效液相；质量控制

Dentification and position control of manipulators .

陈默子。人工神经网络在机械手动力学辨识和位置控制

On the base of applied tech. and system structure, the key tech. are expressed in detail. It includes:Knowledge representation technology: it is described in two stages by "Depictive frame + Rule group"."Depictive frame" is used to reflect the factors concerning question field."Rule group" reflects the son-question in question field; knowledge management system: it is made up of knowledge-base editing component, factor classifying component, knowledge inspecting component and extractive knowledge component; uncertainty reasoning adopt method of elicitation search strategy and data drive controlled by member knowledge. It take reliability of compound proof at first. That can resolve the matching contradiction. Reasoning explanation introduce pre-text and followed method of resolving path. Knowledge discovery component take SLIQ as basic arithmetic. It provides classification model in two stage forms which aim at training suit. That is decision tree and productive rule.

在确定应用技术与系统结构的基础上，重点阐述了本文的核心技术，这包括：知识表示技术，采用&描述框架+规则组&的层次结构，&描述框架&用于描述问题域所涉及的因素，&规则组&反映问题域内的子问题；知识管理系统，由知识库编辑构件、因素分类构件、知识检测构件和知识求精构件组成；不确定性推理机采用启发式搜索策略，元知识控制的数据驱动，以复合证据可信度优先作为匹配冲突消解的策略，推理解释采用预置文本与求解路径追踪的方法；知识发现，采用SLIQ快速可伸缩算法，分类模型用判定树与产生式规则两种形式描述。

Characters controlled by the DNA of extranuclear organelles are not inherited according to Mendelian laws and are transmitted only through the female line, since only the female gametes have an appreciable amount of cytoplasm.

由于细胞质大多来自母体所产生的配子，所以由细胞核外的细胞器的 DNA 所控制的遗传性状一般只随母系而遗传，也不符合孟德尔定律。

The XYN7 gene, located on multicopy shuttle vectors pYES6/CT, was successfully expressed in the yeast Saccharomyces cerevisiae under the control of the GALI promoter and CYC1 transcription termination signal , respectively.

XYN7基因构建在多拷贝穿梭载体pYES6／CT上，在GALI启动子和CYC1转录终止信号的控制下成功在酿酒酵母中表达。

S-RNase-mediated gametophytic self-incompatibility is controlled by a multiallelic S-locus at which two separate genes, the female and male specificity determinants, are tightly linked.

配子体自交不亲和由具有多基因的单一位点S位点控制，该位点包括紧密连锁的雌性和雄性S决定因子。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。