查询词典 root tip

Rice lateral root primordia initiated only from the pericycle cells adjacent to the phloem poles, indicating that initiation of rice lateral root primordia had specific cell type pattern.

3水稻侧根原基起始具有严格的细胞位置效应，只有与韧皮部极直接相邻的中柱鞘细胞才能分化形成侧根原基。

The results showed that POD activity increased at first and then decreased in the skin and flesh of root. The peak occurred at 40 d and 60 d in the skin and flesh, respectively. POD activity in the skin was higher than that in the flesh at 30 d and then contrary results were observed. The higher POD activity was, the more POD isoenzyme was. The pattern of POD isoenzymes was different between skin and flesh at different vegetative growth stages. POD isoenzymes in the skin were composed of five monomers and four dimers while five dimers or two monomers, two dimers and one tetramer in the flesh. POD isoenzymes in the root were mainly acidic. POD localized mainly in the cell walls of periderm, cambium, xylem ray, xylem vessels and primary xylem.

结果显示，心里美萝卜营养生长期肉质根的皮和肉中POD活性均先升高后降低，分别在播种后第40 d和60 d出现峰值，30 d时皮中POD活性高于肉，之后则相反，酶活性最高时同工酶数目也最多，不同时期，皮和肉中同工酶种类不同；皮中POD同工酶由5个单体和4个二聚体组成，而肉中由5个二聚体或2个单体、2个二聚体和1个四聚体组成，均以酸性同工酶为主；组化定位显示POD主要分布在肉质根的周皮、形成层、木射线、木质部导管和肉的初生木质部等的细胞壁附近。

Chapter 5, we get shaperupper and lower bounds of perron root of the matrix by the perron root of A2 undersome conditions. Some examples are given to show the new estimation method iseffective.

第五章借助已有的非负矩阵A 的Perron根的结果，通过对A2的Perron 根估计，得到了非负矩阵A 的perron 根的更优的上下界。

In order to concern the tax system change resulting in economic structure transformation, the Unit Root Test adopts in the research is the Perron (1989) Unit Root test which considers the variable structure transformation.

为考量税制改变可能造成经济体结构转变的情形发生，故在单根检定时特别采用Perron(1989)考量变数结构转变之单根检定。

Firstly, the research tests the stationary of each variable by adopting the Unit Root Test and all variables shows I(1) sequence. Secondly, it tests the stability of each variable by adopting Perron (1989) structure transformation Unit Root Test. The test result is same as the ADF test, which does not consider the structure transformation.

首先以单根检定法来检定各项变数是否为定态，结果显示变数皆为I(1)序列，接著以Perron(1989)结构转变的单根检定，检测各变数的平稳性，检定结果与不考虑结构转变的ADF检定结果相同。

The measured root concentrations and RCFs of phenanthrene and pyrene were positively correlated with root lipid contents.

不同植物根中菲和芘含量和根系富集系数与根的脂肪含量呈显著正相关。

The distribution ratio of photosynthate between root and shoot is another factor that may be contribute to the WUE difference mechanism, for the high WUE clones usually have optimal ratio of root to shoot.

叶片光合作用积累的同化物在地下、地上器官间分配比例的差异也是引起品系间WUE的差异的一个原因，WUE高的品系具有较优的根冠比。

Through integration of techniques including root phototonus, optics imaging and electric-mechanics, an experimental system for plant root image fast acquisition and procession was developed.

在图象边缘检测方面，提出了基于子波变换的边缘检测新算法，该方法具有较强的抗噪声性能。

There was a significant difference between phyllome and root for the distribution of Na in different varieties; In KWS0143 and PRESTIBEL, the Na distribution in root was higher than that in phyllome, but that of NongDaTianYan4 and BaoYu 302 were contrary.

植株中钠素累积量农大甜研4号与KWS0143皆高于包育302和PKESTIBEL，叶丛中累积总量高于块根；不同品种钠素累积量分配在叶丛和块根中的差异较明显，KWS0143和PRESTIBEL分配到块根的大于叶丛，而农大甜研4号和包育302与之相反。

When dry distillation of distillates by condensation, the liquid product of clarification, it is submerged in the lower pine root oil, pine root oil and then use the same method can be obtained for further processing pine tar.

干馏时的馏出物经冷凝后，液体产物澄清时，沉在下层的是松根油，再将松根油用同样方法进一步加工可制得松焦油。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。