四体

Compounds were identified by NMR etc, and they are veraflorizine 1, ebeinone 2, verticinone 3, isoverticine 4, trilinolein 5, phenanthrene 6, 2,5-dimethoxy-1,4-benzoquinone 7, tetradecane 8. All of them were isolated from this plant for the first time.

从安徽舒城县产舒城贝母的干燥鳞茎中分离得到了14个单体化合物，应用核磁共振等手段鉴定了8个化合物的结构，其中4个化合物为异甾体生物碱，4个为非生物碱，分别为：veraflorizine 1、鄂贝乙素2、浙贝乙素3、异浙贝甲素4、三亚麻油酸甘油酯5、菲6、2，5—二甲氧基苯醌(2，5-dimethoxy-1，4-benzoquinone)7和正十四烷8，这些化合物均为首次从该植物中分离得到。

The investigation of reaction kineties of tetralin hydrocraking on modified Molyblenum-Nickel catalysts with zeolite Y were conducted in the improved China-made continuous micro reactoe WF-8900 connected with gas chromatograph on-line.

在活性趋于稳定的以改性Y沸石为担体的钼镍催化剂上，利用经改造的国产WF—8900型连续流动微反-色谱装置，进行了四氢萘加氢裂化反应动力学方面的研究。

Hemoglobin is an oxygen and carbon dioxide carrying molecule of erythrocyte, so, it is a kind of necessary tetrameric protein for vertebrate.

血红蛋白是红细胞中的一种氧和二氧化碳的载体分子，因而是脊椎动物所必需的一种四聚体蛋白。

In vascular smooth muscle the KATP is a tetrameric complex by Kir6.1 and SUR2B.

血管平滑肌中的KATP是由Kir 6.1和SUR2B组成的四聚体结构。

For example,α2-macroglobulin appears to have an alternative structure that consists of a tetrameric subunit linked via disulfide bridges.

例如，第二号甲型巨型球蛋白似乎拥有一个由双硫键所连结的四倍体次单元所组成的结构。

The tetrameric anti PSA scFv which could bind to PC 3 cells has been successfully gained for the potential use in clinical studies.

获得了可与PC－3细胞特异结合的抗PSA scFv四聚体，为进一步临床应用奠定基础。

Compared with that in the air, a better resolution of the AFM images was obtained in the liquid. Smaller domains could be discerned, but these domains did not form RyR1s in the tetrameric appearance.

缓冲液中RyR1的AFM图象比空气中分辨率更高，能见到更小的结构域，但是这些结构域并未明显以四聚体的方式组成RyR1。

Methods HBcAg specific CD8+ cells in whole blood samples of chronic hepatitis B patients were stained with soluble HLA-A2—HBV core 18-27 peptide tetrameric complex counted by flow cytometry.

应用人类主要组织相容性复合体A2的胞外段与HBcAg表位肽Tc18-27构建的四聚体结合流式细胞术检测人外周全血中该表位肽特异的CD8+CTL的数量，并以其占CD8+细胞总数的百分比表示。

The results indicate that the pHbs modified with PEG and DBBF have more stable tetrameric conformations with a molecular weight of 107 kD. Their oxygen half-saturation pressure (P50) is around 3.33 kPa which approximates the physiological P50 of human red blood cells.

结果证明，联合修饰产物具有稳定的四聚体结构，分子量达107000，半饱和氧分压P50在3.33KPa左右，接近於生理条件下人体红细胞的P50值。

Beta-thalassemia major is a serious hereditary hemolytic anemia which does great harm to human being.It is a monogenic disease characterised by a reduced synthesis of beta-globin chains,which dues to the Doint mutation or deletion of beta-globin gene and its control region.It not only decreases the hemoglobin level,but breaks the balance of alpha/beta synthesis ratio.The major cellular pathogenetic mechanisms in beta thalassemia are based primarily on the deleterious effects produced by the accumulation of the excess alpha globin chain.These excess alpha-globin chains cannot form stable tetrameric structure and deposit in erythroid cells.They cause large ineffective erythropoiesis on their own,accelerate red cells destruction,and lead to hemolysis.

地中海贫血是一种对人类健康危害严重的遗传性溶血性贫血病，是因β-珠蛋白基因及其调控序列的点突变或缺失致使β-珠蛋白肽链合成减少或完全停止，这不仅使患者血红蛋白水平降低，而且使原来在数量上与之持平的α-珠蛋白肽链相对过剩，这些相对过剩的游离α-珠蛋白肽链并不能形成稳定的四聚体，它们沉积在红细胞中导致了大量无效红细胞生成和红细胞寿命缩短，引起了严重的溶血性贫血。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。