异点序列

词组短语

sequence of distinct points

与异点序列相关的网络例句 [注：此内容来源于网络，仅供参考]

Firstly, This paper processes geometry filtration based on character of orbit's apogee and perigee after orbit model is analyzed and based. Secondly Space Debris is separated into two kinds, coplanar and not coplanar according as location interrelation of target and debris. In Dynamic filtration's processing, considering prediction time limit and orbit perturbation, secular effects which have increaser effect is considered so that some need catching danger time point is appeased, some law about time when target and debris pass intersectant line each other is inferred, when debris and object are in different plane and some similar law also is inferred otherwise. The time list is arithmetical progression. These laws can improve calculation efficiency remarkably; Lastly orbit predict is a course approaching least distance. Danger time point in the last step become beginning time point from which debris and object's position and velocity are calculated by SXP4 Model which is an analytic model.By result, determine that relative movement trend is closer or apart, farther calculate the interval apart from time when predictive least relative distance occurs. Least relative distance and time when least distance occurs is calculated finally. It is a fast approach course adopting varied interval.

本文在分析、建立轨道摄动计算模型的基础上，首先采用基于轨道远、近地点特征对大量编目在册的空间碎片进行初步几何静态筛选，然后根据碎片与目标轨道面的相对位置特点把碎片分为异面与准共面两种情况以进行动态筛选，在筛选过程中考虑到预报时限长度和轨道摄动影响，引入了轨道摄动中具有积累效应的长期项以满足危险时间点的捕捉要求，利用了长期项摄动变化线性的特点导出了碎片与目标异面情况下各自过交线的时间序列成准等差数列的规律性和准共面情况下类似的规律性，从而显著地提高了前期轨道筛选的计算效率；最后对剩余危险碎片和目标飞行器利用SXP4轨道预报模型在前期轨道筛选的基础上以各个危险探测时间点为预报的时间起点，并根据预报计算结果，分析目标和碎片在该时间点的运动趋势是相互远离还是相互接近，推出预计最小相对距离发生时刻相对此刻的时间长度，得到其随时间变化的局部最小相对距离以及危险距离发生的时刻和相对速度，这是一个采用变时间步长、快速逼近最小相对距离的过程。

The signals look like noncontinuous beads on the DNA fiber,which consist of multi-copy and arrange tandemly.Fiber-FISH results with 45S rDNA probe showed that an average signal length is about 3～11μm in many tandem copy sequence(measure number,n=8),so we estimated the size of each copy to be approximately 11～30kb in cotton genome.There are dual signals on each end of the mitosis metaphase chromosomes and pachytene chromosomes hybridized with telomere DNA probe.The signals also look like non-continuous beads on the DNA fiber,the length is about 1～9μm,so we estimated the size is about 4～27kb.The signals almost covered the whole mitosis metaphase chromosomes and pachytene chromosomes of G.arboretum Shixiya 1 hybridized with gDNA probe,the euchromatin zone and heterochromatin zone were identified clearly on pachytene chromosomes,and the signals also look like non-continuous beads.Two BAC clones 150-D-24 and 182-F-9 in DNA BAC library of Pima90 were selected as probe to hybridize with mitosis metaphase chromosomes,pachytene chromosomes and DNA fiber of G.raimondii.

棉花FISH技术系统的应用研究。45S rDNA在亚洲棉石系亚1号中期和粗线期染色体上有两对大的信号，在DNA纤维上信号为非连续的念珠状，多个拷贝串联排列，每个拷贝长度大约在3～11μm，推测每个拷贝的实际长度为11～30kb；端粒序列在亚洲棉石系亚1号中期和粗线期染色体端部都有双点信号，在DNA纤维上信号也为非连续的念珠状，不同染色体上信号长度大约在1～9μm不等，推测实际长度为4～27kb；gDNA信号几乎布满整个亚洲棉石系亚1号中期和粗线期染色体，在粗线期染色体上能明显区分出常染色质区和异染色质区，DNA纤维上的信号均为非连续的念珠状。

RT-PCR detection of SYT-SSX mRNA can be used in formalin-fixed, paraffin-embedded tissues as a sensitive and specific technique in the diagnosis and differential diagnosis of synovial sarcoma. 2. The SYT-SSX fusion type is related to histological type and cell proliferative activity of synovial sarcoma. 3. Some characteristic sequence motifs flank genomic breakpoints of chromosomal translocation of synovial sarcoma, including Alu sequences, Translin recognition sequences, topoisomerase Ⅱ recognition sites and palindromic sequences, which may be associated with chromosomal translocation of synovial sarcoma.

1、RT-PCR技术检测SYT-SSX mRNA表达可用于福尔马林固定、石蜡包埋组织，敏感性和特异性高，可用于滑膜肉瘤诊断和鉴别诊断。2、SYT-SSX融合基因类型与滑膜肉瘤组织学分型及细胞增殖活性相关。3、滑膜肉瘤染色体易位断裂点旁存在一些特征性序列，包括Alu序列、易位素识别序列、拓扑异构酶Ⅱ识别位点、回文序列等，可能与其染色体易位发生机制有关。

There were some characteristic sequences flanking the genomic breakpoints of SYT, SSX1 and SSX2. These sequences included Alu sequences, Translin recognition sequences, topoisomerase Ⅱ recognition sites and palindromic sequences. These sequences are speculative to be associated with chromosomal translocation of synovial sarcoma.

在SYT，SSX1和SSX2基因组断裂点旁存在一些特征性序列，包括Alu序列、易位素识别序列、拓扑异构酶Ⅱ识别位点、回文序列等，可能与滑膜肉瘤染色体易位有关。