中柱

By tailoring the scale between hydrophilic region and lipophilic region, smectic, columnar and cubic mesophases were observed in compounds I-F and II-F. By changing the length of the lateral chains, a series of new columnar phases and a non-conventional semctic phase were obtained in III-F.

通过调节亲水部分和亲脂部分的比例，在I和II-F中观察到了从近晶层相到柱相再到三维立方相的液晶相序列；在波拉分子III-F中通过改变侧链的长度，获得了一系列柱相及新型层相。

Water samples were extracted and purified and collected by solid-phase extraction LC-18 column. Soil samples were extracted by ethyl acetate/petroleum ether (2:1, by vol) and purified by sulphonation. Wheat sample was extracted by acetonitrile/water (4:1, by vol) and purified and collected by SPE- Florisil column.

水样直接用LC-18固相萃取小柱分离、净化和富集；采用乙酸乙酯／石油醚（体积比2：1）振荡提取，磺化法净化，测定土壤中氯氟吡氧乙酸残留量；以乙腈／水（体积比4：1）为提取剂，氟罗里硅土固相萃取小柱分离、净化，测定小麦样品中氯氟吡氧乙酸的残留量。

Under different combustion pressuring rates of the solid motor, the relations among the convecting combustion flow characteristics, especial the pattern of flame spreading, and the variation of stress intensity factor at the crack tip are discussed in detail.

文中详细描述了在固体火箭发动机燃烧室环境中，药柱裂纹对流燃烧流场特性和固相裂纹体变形特性；燃烧室增压率对裂纹中火焰传播方式的影响；燃烧室增压率、燃烧室平衡压力的设计值、药柱裂纹径向长度对固相裂纹尖端应力强度因子、燃烧室压力的影响。

To purify platelets by magnetic activated cell soring LD and MS respcctively. To evaluate karyotc clearance by leucocount method and to detect the platelets activation grade by flow cytometry method.

血细胞分离机单采外周血中的血小板，分别采用磁性细胞MS柱和LD柱纯化浓缩血小板，采用白细胞绝对计数法对分选前后血小板中的有核细胞进行检测，计算有核细胞去除率。

The steel tube in the tubed reinforced concrete column is primarily used to confine and to take effects of shearing resistance as the transvers reinforcement for columns.

在套管钢筋混凝土柱中，套管用作柱中的横向增强，主要起约束和抗剪作用。

OBJECTIVE:To establish the RP-HPLC method for determination of methyl hydroxybenzoate and ethyl hydroxybenzoate in oral liquid preparations METHODS:The Nova-Park C18 column(3 9mm×150mm,5μm)was used The mobile phase consisted of acetonitrile-water(25∶75)at a flow rate of 1ml/min,the detection wavelength was set at 254nm and the sensitivity was set at 0 01 AUFS RESULTS:The linear ranges of methyl hydroxybenzoate and ethyl hydroxybenzoate were 0 4 412～13 2 360μg/ml(r=0 9 999) and 0 6 672～20 0 160μg/m...

目的 ：建立内服液体制剂中羟苯甲酯和羟苯乙酯的反相高效液相色谱测定方法。方法：色谱柱：Nova -ParkC18 柱(3 9mm×150mm ，5μm)；流动相：乙腈-水(25∶75)；流速：1ml/min ；检测波长：254nm ；灵敏度：0 01AUFS。结果：羟苯甲酯浓度在0 4412～13 2360μg/ml范围内线性关系良好(r=0 9999)；羟苯乙酯浓度在0 6672～20 0160μg/ml范围内线性关系良好(r=0 9998)。结论：该方法简便、快速、准确，可用于医院制剂中防腐剂的检测。

Complex surface structures stripes or bandings were found in those of A. dichotoma, but less in P. inclinatus. The trabeculae consisted of three parts the surface part, the cylindrical layer and the central part. The surface and the central part were mainly protein substances which could be dissolved by KOH.

其中心部主要是溶解于KOH溶液的物质蛋白一类的物质，环状纤维层中的几丁质纤维，在层和层之间相互不同的方向排列着，并各自与前翅的上下层中的几丁质纤维连续地连接着2独角仙前翅小柱的表面有复杂的纹样，而锹形虫的小柱表面只有非常简单的几乎没有纹样。

P and 〓Si MAS NMR results show that both Si-OH groups on the pillars and P-OH groups on the layers react with Cr〓 to form Si-O-Cr and P-O-Cr bondings in Cr〓O〓-SiO〓-ZrP, resulting in a more homogeneous dispersion of the chromium oxide in the interlamellar region.

用〓P和〓Si NMR表征时同样观察到传统方法中氧化铬主要与硅柱作用，与层板几乎不作用，而新方法中氧化铬与层板和硅柱均有强相互作用，使氧化铬更均一地分散于层间区域。

The lung tissues were extracted with acetonitrile and 0.1M potassium dihydrogen phosphate buffers. The extracts purified by C18 solid-phase extraction cartridges. The eluates were determined by HPLC at 288nm. Limits of detection were 0.025 ug/mL for tilmicosin in plasma and 0.025ug/g for tilmicosin in lung, respectively.

采用C18 SPE柱分离和提纯血浆中的替米考星，用乙腈和0.1M磷酸二氢钾缓冲液提取肺脏中的替米考星，用C18 SPE柱净化，均采用反相高效液相色谱测定替米考星，检测波长288nm。

Sample matrix are discharged by the pre-column. The mobile phases applied consisted of 0.1% HOAc (pH3.0) acetonitrile-water on extraction column with UV detection at 225nm. Then, coupled-column liquid chromatographic methods for the direct analysis of atrazine and simazine in urine was established. As a result, the system showed good chromatographic property in the on-line analysis of atrazine and simazine in urine.

使用该系统对尿中的莠去净和西玛津残留进行了分离分析，以含有0.1%乙酸的酸性水缓冲液对加标尿液中莠去净类化合物保留在预柱上，干扰分析的大分子被排阻而无保留通过，其它干扰分子保留小而通过，再切换六通阀，以乙腈和0.1%乙酸水溶液进行梯度洗脱，进而在下一级ODS分析柱上进行分离（紫外检测225nm），两种除草剂的分离分析取得了良好的定性定量结果

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。