查询词典 root cell

If an invaded root cell happens to be a normal diploid cell, it is usually destroyed by the infection and degenerates.

如果被侵入的细胞碰巧是双倍体细胞的，它通常会被感染破坏而退化。

The Zn concentration in leaf and leafstalk increased with increasing Zn supply from 0 to 160 mgL^(-1), but had no increase or even decreased when the Zn supply was higher than 160 mgL^(-1). The Zn concentration in root exhibited a positive correlation with Zn supply and its exposure time, and the kinetic curve of Zn uptake fitted linear-quadratic model, i.e., fast linear uptake first and slow saturation uptake later, with the dividing point at about 1-2 hours' exposure, which could be related with the Zn adsorption on root cell wall and the Zn transportation across the cell membrane.

在0160 mgL^(-1) Zn处理下，植株叶片和叶柄Zn含量随Zn处理水平的提高显著增加，Zn浓度大于160 mgL^(-1)后，植株叶片和叶柄Zn含量不再随介质中Zn浓度的提高而增加，根系含Zn含量与介质中的Zn浓度和培养时间呈正相关，且根系Zn吸收动力学曲线具有二型性，即开始为快速的线性吸收，随后是较缓慢的饱和吸收，两者分界点约在12h，这可能分别与根细胞壁吸附Zn和Zn跨根细胞膜运输有关。

Analysis indicated that the ratios of the Cd forms extracted by ethanol and by deionized water in root, and the ratios of soluble Cd in root cell showed accordancy with the ratio of Cd transported from root to aboveground parts, and also the ratios of the Cd forms extracted by ethanol and by deionized water in stem, and the ratios of soluble Cd in stem cell showed accordancy with the ratio of Cd translocated from rice straw to grain.

分析表明，两供试品种根组织中乙醇提取态和去离子水提取态Cd的比例及根细胞中可溶性Cd的比例与根系吸收的Cd向地上部的分配比例存在一致性；茎组织中乙醇提取态和去离子水提取态Cd的比例及茎细胞中可溶性Cd的比例与植株地上部积累的Cd向籽粒分配的比例间存在一致性。

Due to the complexity of the cell jitter, the NonSynchronous Tining Recovery methods are currently not mature With the emphasis being given to the Class A CBR traffic, this paper analyzes the performance of the queueing delay and cell jitter at the source node and intermediate nodes, and discusses the Source Timing Recovery at the destination node in ATM networks Firstly, this paper presents a description of the cell jitter of CBR traffic, and gives the definitions of two kinds of cell jitter regarding the Source Timing Recovery for CBR traffic Then, by using exact mathematical models and analysis methods, this paper analyzes the impact of the factors, such as the capacity of the queueing buffer, the randomness, the deterministic nature and the correlation in cell arrivals of the background traffic sources, on the queueing delay and cell jitter performance of the CBR traffic through Statistical Multiplexitng To obtain an insight into the power spectral distribution and look for better schemes for the depression and filtering of the cell jitter, within the analyses we succeed deriving the power spectrum of the cell jitter for CBR traffic Hence, not only the power spectral distribution of the cell jitter can in the frequency domain be qualitatively understood, but also can the rms (root-meansquare) value of the cell jitter be quantitatively obtained so as to more accurately measure the amplitude of the jitter In the end-to-end performance analysis of the queueing delay and cell jitter, we propose a kind of quasi-periodic cell stream model to characterize the jittered CBR traffic, and present an initial queueing analysis of the CBR traffic following such a model at a generic intermediate node Additionally, we briefly discuss the buildout/playout and Source Timing Recovery functions of the destination node Finally, regarding the Source Timing Recovery of CBR traffic, this paper systematically discusses several important principles of the cell jitter filtering and depression reported in the literature, introduces several implementation schemes of the Source Timing Recovery e.

由于信元抖动的复杂性，非同步定时恢复方法目前还很不成熟。本文针对A类CBR业务流在ATM网络源节点和中间节点的排队时延和信元抖动性能，以及在目的节点的源定时恢复问题作了较为全面的研究。首先，文中描述了CBR业务流的信元抖动，并具体地给出了两种与CBR业务源定时恢复有关的信元抖动的定义。然后，采用了精确的数学模型和分析方法，有针对性地分析了业务背景中信元到达的纯随机性、确定性和相关性以及排队缓存器容量等因素对CBR业务流经过统计复用后的排队时延和信元抖动性能的影响。为了了解信元抖动的功率频谱分布和寻求更好的抑制和滤除抖动的方法，在性能分析中，我们成功地完成了CBR业务流信元抖动的功率谱分析，使得不但可以从频域定性地认识信元抖动的能量分布特性，而且还可以定量地求出信元抖动的均方根值(rms：root-mean-square)，以更为准确地衡量抖动的大小。在CBR业务流的多节点端-端排队时延和信元抖动性能分析中，我们提出了一种准周期性(quasi-periodic)信元流模型来描述感染了信元抖动的CBR业务流，并基于这一模型进行了CBR业务流中间节点的初步排队分析。

The kinetics of aluminum adsorption and desorption by root cell walls of an aluminum resistant wheat Triticum aestivum L.

铝胁迫对小麦根尖细胞质蛋白的影响：铝诱导苹果酸分泌的意义。植物营养与施肥学报。

Cytologic results showed that chromosome numbers of root cell are 2n 56, and 28 bivalents can be observed at PMC MI in the six 8x Trititrigia.

细胞学鉴定结果表明，6个八倍体小偃麦的根尖细胞染色体数目为2n=56，花粉母细胞减数分裂中期Ⅱ染色体构型为2n=28Ⅱ，具有高度的细胞学稳定性。

It wasconfirmed that the damage of root cell membrane is one ofthe mechanisms for Al phytotoxicity.

证实了铝离子的毒害机理之一是它损伤了原生质膜。

If, however, the root cell is one of the rare tetraploid cells (a cell having four sets of chromosomes that arise spontaneously in the root), it may develop into a nodule.

如果这个根细胞是罕见的四倍体细胞（一种在根部自然拥有四套染色体的细胞），它就可能生长成为根瘤。

The results showed that light rare earth elements adsorbed by plant root cell wall and taken up by cross-membrane were utilizable, and the total content of rare earth elements in plant root can be used for predicting bioavailability.

结果表明，玉米根细胞壁吸附和跨膜吸收的轻稀土元素都是植物可以吸收利用的，可以用根中总稀土元素来预测生物可利用性。

For example, exogenous REs, induce the extent of changes in root growth, root enzyme activities and root cell membrane permeability.

如施用不同剂量RE条件下，稀土元素与根系的相互作用使根系生长、酶活性、细胞质膜透性等受到不同程度的影响。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。