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The stem was cut into several segments away from the pine seeding, arranged and collected in the order of chronology time and distance from where they were inoculated. To separate B.xylophilus coarsely out from the stems and made them into paraffin slices. And be observed under the potics microscope by dyed with safranin-fast green contrast-stain method and PI fluorescence stain method. In order to find out how about the nematode rigour distributing , but also ebb and flow of their amounts after invading the host pine seeding. Seek the pathological changing orderliness of host cells in different position along with the remotion of nematodes. By deeply analysing the variety of host cell nucleolus to estimate whether the host cell took place the programmed cell death after inoculated B.xylophilus.

按时间进程和与接种点上下距离的远近,对松苗分茎段进行粗分离和制作成石蜡切片,分别用番红-固绿双重染色法和碘化丙锭荧光染色法在光学显微镜下观察,以了解线虫侵染后在寄主体内的准确分布和数量的消长,寻找随着线虫的移动扩散,寄主不同部位细胞病变的数量、速度发生的变化规律,并进一步通过分析其细胞核的变化来判定松材线虫侵染后是否能诱发寄主细胞发生程序性死亡(programmed cell death,PCD)。

The article analyzes change of its ingredients including Ca(superscript 2+), Fe(superscript 2+) 42(superscript 2+) within different process using chemical analysis, iodine amount and testing chemical value ,and prove the conclusion that the method abouve is one of the best ways to process ruddle through experimental data, which may cause ruddle crispy and easy to be smashed, and get the effctive ingredients, and arsenic's amount can be limited as the value require by codex (0.01%).

利用化学分析法、碘量法以及化合价数的测定法来分析代赭石不同炮制品中的Ca(上标 2+)、Fe(上标 2+)、As(上标 3+)的含量变化,通过实验数据来证实煅醋淬法是炮制代赭石最行之有效的一种理想方法,会使代赭石质地最酥脆,易于粉碎,使有效成份最易煎出,最能使炮制品中冲的含量(0.01%)符合药典要求,建议把砷的含量作为股代赭石的一个质量指标。

Started from D-tyrosine, we obtained the tetramic acid 96 using Jouin reaction. The assembly of the second fragment 109 was stared from 1,4-butandiol,using asymmetric alkylation reaction developed by Oppolzer as a key step. Coupling of the tetramic acid 96 with 109 provided the key intermediate 110 according to Yoshii\'s procedure. After remove protective group and Sharpless epoxidation, we obtained the key intermediate 113. Its macrocyclization to form the final product is in progress.

本论文的第二章主要对Macrocidin A开展了合成工作,我们从D构型的酪氨酸出发,经过官能团转换;利用Jouin反应生成Tetramic acid 96,另外一个片断从1,4-丁二醇开始经过多步反应生成碘化物104,利用Oppolzer发展的手性樟脑磺酰胺为辅基参与的不对称烷基化反应,引入手性甲基,生成关键中间体109,接着通过Yoshii发展的方法连接96和109生成110,经过Sharpless不对称环氧化反应建立环氧化合物,然后脱去保护基得到关环前体113,分子内的Mitsunobu反应进行关大环反应正在进行之中。

It may imply that there are close relation between the enhancement of electric field in nearby particles and dipolar interaction.

基底上正电荷所诱导的金属纳米粒子的偶极的形成减弱了从金属纳米粒子到PATP分子的电荷转移,碘离子的共吸附使得金属纳米粒子表面的电荷重新分布。

A modified analysis method based on the determination of ozone—indigo disulphonate spectrophotometer(GB/T 15437-1995) in gas phase has been developed to detect the concentration of ozone in liquid phase. An analytical condition of λmax=612~615 nm,ε=20 000 L/, pH 2 is obtained by the titration of indigo disulphonate. Compared with potassium iodide method,it shows a higher precision and accuracy,CV<3.0%. The results also prove that blank experiment will bring about 5.0%systematic error.

在气相臭氧浓度的靛蓝二磺酸钠分光光度法(GB/T15437-1995)基础上提出了液相臭氧浓度的测定方法,采用靛蓝二磺酸钠标准曲线法代替采用易分解的臭氧标准曲线法,得出测定条件λmax=612~615 nm、ε=20 000 L/、pH为2,通过碘量法比较实验,说明新的测定方法具有较高的精度和准确度,相对标准偏差小于3.0%;比较结果表明忽略空白实验将引入5.0%的系统误差。

Methods: A model to evaluate lymphocyte proliferation stimulated with a polyclonal activator, concanavalin A, was established by vital dye carboxyl fluorescin diacetate succinmidyl ester labeling technique. Effects of the different doses of anisomycin on the lymphocyte proliferation were estimated by flow cytometry and MTT methods. The propidium iodide labeling technique was applied to assay the effect of the different doses of anisomycin on changes of the lymphocyte cell-cycle stimulated by ConA or by phorbol ester plus Ionomycin. The percentage of the expression level of CD69 and CD25 on the activated lymphocytes was evaluated by fluorescin-conjugated monoclonal antibody double labeling technique.

以活体染料羧基荧光素乙酰乙酸琥珀酰亚胺酯染色,建立在多克隆刺激剂刀豆蛋白A刺激下评价小鼠淋巴细胞增殖的模型,通过流式细胞术和MTT法分析茴香霉素在不同剂量下对淋巴细胞增殖的作用;采用碘化丙锭染色分析茴香霉素对ConA或佛波醇酯加离子霉素刺激的小鼠淋巴细胞周期变化的作用;利用荧光标记的单克隆抗体双染技术和流式细胞术观察茴香霉素对小鼠CD3~+T细胞早期及中期活化标志分子CD69和CD25表达的影响。

By the optimized condition of Sol-Gel process,the film has good quality was prepared. The performances of the electrode have been tested in the paper. The effects of solution stability,temperature and interferent have also been studied. Cyclic voltammetry was used to investigate formative process of sensitive film.

实验对溶胶和凝胶化过程中Sol储备液的配比、陈化时间、提拉速度及膜的干燥条件等因素对成膜质量的影响进行了优化;测试了Sol-Gel化学修饰碘电极的性能,并研究了待测液的稳定性、温度和共存物等因素对测定的影响。

The disclosed combined detection method for high-pure SO3 gas with SO2 as impurity comprises: constant-volume sampling at least 60Deg better 60-80Deg to avoid liquidation of SO3, absorbing with alkali solution to obtain total volume percentage concentration of high-pure SO3 gas and SO2; processing the absorbed liquid, using iodometric method to obtain SO2 volume percentage concentration and then the SO3 concentration.

一种高纯度SO 3 气体及其中杂质SO 2 气体浓度联合检测的方法,包括用吸收装置进行定容采样,然后用碱溶液吸收,得到高纯度SO 3 气体及其中杂质SO 2 气体的总体积百分浓度,再对吸收液进行处理后,采用直接碘量法测得SO 2 气体的体积百分浓度,将高纯度SO 3 气体及其中杂质SO 2 气体的总体积百分浓度减去SO 2 气体的体积百分浓度即为高纯度SO 3 气体浓度,其所述吸收装置进行定容采样时,是在至少60℃以上的热环境中进行的。

For example: peripherin-layer is made of nuphtheroquinon-xylenediol azide-anti-alcohol (microspectroscopic catalysical sensitivity range of up to 320 ~ 460nm), PS print, when you choose to use iodine gallium light, exposure time, simply by 20s with high pressure mercury lamp above the 30s, because although the two lamps and the spectral 300 ~ 460nm scope, but sulfonylated spetroscopy gallium light emission from 400 nm wavelength in close to the section of the distribution of light energy and light energy than much of high pressure mercury lamp, uniform is also much larger, and with this kind of formulation-peripherin-catalysical spetroscopy, emiting anastomasis sensitivity more productive.

感平层是用邻二叠氮醌型感平剂(平谱不分平感量边界为320~460nm)的PS版,晒版时若采取碘镓灯,曝平工夫只需20s把握,用矮压水银灯则给30s以上,这是因为:虽然两栽灯具的平谱成不分都在300~460nm边界边,但磺镓灯不收射的平谱洋挨近400nm波不幼段的平能量的不分布及平能量比矮压水银灯平均得众也不小得众,并且与这栽感平剂型的平谱不分平感量更为吻不分,不收平效果也更矮的原由。

Although itsapplication in organic synthesis has extented rapidly, a survey of literature showsthat CuCN·2LiCl is almost the only copper salt for the Michael addition reaction offunctionalized organozinc halides, and the amount of CuCN·2LiCl used isstoichiometric. Because of the toxity of CN〓, we try to carry out the reaction inother way instead of CuCN.

但在带官能团的有机卤化锌的Michael加成反应中,到目前为止基本上都是使用毒性较大的铜盐CuCN-2LiCl,为了寻找更好的方法,并使其成为催化反应,我们以带官能团的有机碘化锌的Michael加成反应为目标反应,对FG-R-ZnI在有机合成中的应用进行了考察,得到了较好的结果。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。