四体的

The results showed that the best effect of autotetraploid was obtained with 2.0 gL-1 colchicine solution for 6 times, and the frequency was 4.5%.

结果表明：经2.0 gL^(-1)秋水仙素处理6次获得同源四倍体的效果最佳，四倍体诱导率达到4.5%。

There is no electron transfer from tetrakis(2-thienyl)tetrathiafulvalene to [60]fullerene containing piperidinoxanthate dyad in benzonitrile in steady-state.

四硫富瓦烯及其衍生物是良好的有机导体及电子给体，噻吩基取代的四硫富瓦烯可作为合成含噻吩及四硫富瓦烯两种电子给体的聚合物的单体。

The invention discloses a 3, 5-2-0-(4-chlorobenzene chlorobenzene)-2-deoxidising- D-red-furanoside that contains alpha body and beta body. The method includes the following steps: dissolving chlorine indicant into tetrahydrofuran, quickly adding to alcoholic solutioin, whisking and reacting, after reacting, vacuuming and steaming solvent to gain mixture of alpha body and beta body, taking separation by column chromatography to gain separated alpha body and beta body.

本发明公开了一种3、5-二-O-(4-氯苯甲酰基)-2-脱氧-D-赤-呋喃糖苷，它具有式表示的α体和式表示的β体，制备方法采用在室温下，将氯糖苷溶于四氢呋喃中，然后快速加入到醇溶液中，搅拌下进行反应；反应结束，减压蒸掉溶剂，得到白色固体，将该固体用石油醚溶解，过滤除去不溶物，再次减压蒸去溶剂，得到白色α体和β体的混合物，用柱色谱法进行分离，得到单独的α体和β体。

Tetraploid organisms may arise by the fusion of two diploid gametes that have resulted from the nondisjunction of chromosomes at meiosis, or by nondisjunction of the chromoosomes during the mitotic division of a zygote.

四倍体的产生可能是由于两个二倍体配子发生融合，这种二倍体配子又是在减数分裂中染色体不发生分离而形成。四倍体也可能因为受精卵进行有丝分裂时染色单体未发生分离而形成。

Molecular docking study of telomerase TMPYP4 quadruplex stabilization role Abstract: The purpose of ligand TMPyP4 to find telomerase TMPyP4 quadruplex in the best mode.

分子对接法研究TMPYP4对端粒酶四链体的稳定化作用摘要：目的以TMPyP4为配体，寻找TMPyP4在端粒酶四链体上的最佳作用方式。

But the electrochemical results show that complexes exhibitcompletely irreversible redox behaviour which is different from thatfound in diiron proteins. 1.3 To obtain the diiron species which are stable to elec-trochemical reduction, a series of new tetranuclear cage ironspecies containing two 〓 cores, with using hexadentatepolybenzimidazole ligands, were synthesized and characterized by vari-ous spectroscopic methods. Their physical properties have been investi-gated. The crystal structures of 〓〓tetrakis (benzimidazol-2-ylmethyl)-1, 4-diaminobutane and 〓,〓-tetrakis ( N-ethylbenzimidazol-2-ylmethyl )-1, 4-diaminobutane were determined. They contain two 〓 cores which arelinked to each other by -〓-chain in the ligands.

1.3为了获得电化学还原稳定双核氧桥联Fe化合物，使用六齿配体合成了一系列含有两个〓单元四核笼状化合物，并用各种谱学手段表征了它们，还研究了它们的物理化学性质确定了〓L=N，N，N'，N'-四(苯骈咪唑基-1，4-丁二胺和〓，〓四-1，4-丁二胺化合物的晶体结构，它们含有两个〓单元，其中两个〓单元是通过配体的〓链桥联成四核笼状结构。

The improved L.D.Cua method was used to induce tetraploid of Trichosanthes kirilowii Maxim. The suitable treating time of 0.2% colchicine, the morphology characters and cytology identification between plants of diploid and obtained tetraploid were studied.

采用改良L.D.Cua法诱导短把栝楼获得四倍体，研究了0.2%浓度的秋水仙碱诱导短把栝楼染色体倍性变异的最佳处理时间、四倍体栝楼与原栝楼的形态特征及其四倍体与二倍体的细胞学鉴定。

The tetraploids of C.reticulata from the localities with the altitude of over 1800 m were gross-morphologically similar to the hexaploids, but those growing between 1100 ～1800 m were different to some extent from the hexaploids.

中海拔(1800m)以上的四倍体的云南山茶花外部形态特征与六倍体类型比较相似，而低海拔(1100～1800 m)的四倍体类型的外部形态特征则有些不同，但核形态结构是比较相似的。

Each time after putting to (the instrument with the set of Yamshidi-Nadel provided by Kypho of America for injection of bone cement into the vertebrae; each putting could contain about 1.5 mL bone cement) inject bone cement into the vertebrae, the pressure P was not very high, with 500 kPa bar below for majority and the effect caused showed a significant statistical difference (P.01). Whereas, the pressure within the area of the vertebral P value was not high either, the majority was 10.00 Unit lower, which also led to the effects of significant difference (P.01). Both two states showed partial distribution. After making the statistical analysis to the casual two puttings between the first, second, third and fourth putting of each vertebrae, there existed the general differences. The differences were also found between other puttings (a.0083) on the statistics basis apart from between the first and second and between the third and fourth.

结果 每个椎体的椎体成形术均达到临床评价要求，每次推杆（美国Kypho公司提供标准椎体成形术中Yamshi-Nadel套系中推注骨水泥入椎体的器具，每具推杆可容纳骨水泥约1.5mL）推注骨水泥入椎体时所产生的椎体内的压力P不是很高，多数在0.50 bar以下，其所导致的效应具有显著的统计学差异(P.01)，而每次推杆推注骨水泥入椎体时的椎体内压力面积值P也不是很高，多数在10.00 Unit以下，其所导致的效应具有显著的统计学差异(P.01)，两者均呈偏态分布；而且，对每例椎体的第一、二、三、四杆之间两两予以统计学上的分析，在总体存在差异有统计学意义的基础上还发现除第一和二杆、第三和四杆之间外，其他各杆之间存在着差异(a.0083)。

It is considered that the four-evaporator three-effect process is the most practical for the evaporation of diaphragm caustic soda.

对三效顺流、四体三效及三效四体3种生产质量分数42%等高浓度烧碱的蒸发工艺的优劣性进行了对比分析，认为四体三效工艺在隔膜法烧碱蒸发中具有较强的实用性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。