后柱

In order to find the post-buckling path for ring-stiffened shells under hydrostatic pressure and consider the practical shapes of ring sections, the Compound Strip Method is applied to the post-buckling analysis of ring-stiffened cylindrical shells.

为了研究水压作用下的加肋柱壳的后屈曲状况，并且能考虑到肋骨的实际截面形状和分布情况，本文将复合有限条方法应用于环加肋圆柱壳的后屈曲分析。

Classic hardtop styling, with no B-pillar CTS production windshield laid at a faster angle to create a sleeker profileChrome, split seven-spoke wheel design; 20-inch front wheels and 21-inch rear wheels Sculpted lower front fascia with unique brake-cooling vents Slim-profile outside mirrors XLR-type hidden door handles with proximity remote opening Unique front fender vents Diamond-cut rear fascia with mesh lower grilles and center-outlet exhaust Taillamps with a subtle fin profile and are highlighted with LED lighting technology with light pipes Rear spoiler integrated into the center high-mounted stop lamp Sculpted roof-mounted antenna for OnStar, XM Satellite Radio, etc.

经典硬顶的设计风格，没有B柱，挡风玻璃生产中旅以更快的角度作出规定，以创造一个更光滑profileChrome，分7辐轮毂设计，20英寸前轮和21英寸后轮向内凹陷下具有独特的前仪表板刹车冷却喷口轻薄外后视镜XLR型隐蔽接近门把手的远程开放独特的前挡泥板通风口钻石切割与网格的微妙鳍配置较低的格栅和中心排气出口筋膜后尾灯，并与照明技术，突出了光管后扰流器集成到中央高位安装停止灯设计的弧线车顶安装了卫星导航，XM卫星收音机，天线等

After centrifugation, the extracts were separated on HILIC column by using acetonitrile-water as mobile phase. The analytes were identified and quantitated by LC-tandem MS under the positive/negative electrospray ionization and multiple reaction monitormode. The calibration curves showed good linearity in the range of 25-5000 μg/kg for melamine and cyanuric acid, and 50-10000 μg/kg for ammeline and ammelide. The limits of detection and limits of quantification were in the range of 5-20 μg/kg and 50-100 μg/kg, respectively.

牛奶样品直接用乙腈超声波提取；奶粉样品先用水溶解后再加乙腈超声波提取，高速离心后以乙腈－水为流动相，采用亲水作用色谱柱分离这4种化合物，在电喷雾正、负电离切换多反应监测模式下进行定性与定量分析，三聚氰酸一酰胺与三聚氰酸二酰胺含量在50~10000μg/kg之间、三聚氰胺与三聚氰酸在25~5000μg/kg之间，均获得良好的线性。

The watermelons, the citrullus lamtus or the stems and leaves thereof are taken as raw materials, and the extracting process comprises the following steps: firstly, the raw materials are washed clean and broken to separate the watermelon peel from the watermelon pulp for respectively extracting juice; the two juices are mixed, and micro-filtration and ultra-filtration are carried out to remove insoluble substances and macromolecular substances; and then reverse osmosis and nano-filtration are carried out to obtain the filtrate; the pH value of the filtrate is regulated and then a macroporous strong acid cation exchange resin column is added; and then ammonia water is taken as an eluant for isocratic elution; the eluent obtained is decompressed, distilled, deaminized, discolored, condensed and crystallized to obtain a white crystalline product of the natural L-citrulline extracted from the watermelons.

本发明方法以西瓜、打瓜或者其茎叶为原料，其过程为：首先将原料清洗干净，破碎后将西瓜皮西瓜瓤分开，分别进行榨汁；所得汁液合并，经过微滤和超滤除去不容物和大分子物质；然后再经反渗透和纳滤过滤；透过液调节pH值后通入大孔型强酸性阳离子交换树脂柱；然后以氨水做洗脱剂进行等度洗脱；将洗脱液减压蒸馏脱氨，脱色，浓缩结晶，得到西瓜提取天然L-瓜氨酸白色结晶产品。

Methods: PNS was got by extracting panax notognseng with general method of alcohol circumfluence, purified with organic solvents, and separated with D101 macroreticular resin. The hematolysis rate and the immunocompetence of biology of PNS were determined by hemolysis test and experiment of splenocyte proliferation respectively.

乙醇回流法提取PNS粗提物，经有机溶剂除杂后，通过大孔树脂柱层析分离纯化；溶血性试验测定PNS作用后红细胞的溶血率；脾淋巴细胞增殖反应测定PNS的生物免疫活性。

Determination of organic mercury was based on volatilization of different compounds from aqueous media, purging to an adsorbent trap, release from that trap onto an isothermally operated GC column, and detection by AFS.

有机汞的测定基于不同组分从液体中的挥发后，通于吸附装置，从该装置释放后通入等温操作GC柱中，而后由AFS测定。

The colour of most detected bands became light in the five media with the order of mannosan, mannose, xylan, glucose and pectin.(4)The pectinase in the supernatant was purified by centrifuge , acetone precipitation and sephadex G-75 cloumngel filtration. The specific activity was increased 9.8-fold with an activity recovery of 32.98%.The molecular weight of pectinase was 42.2KD estimated by SDS-PAGE.

确立了以葡萄糖培养基6h的发酵液为提取果胶酶的最初取样点，发酵液经离心，丙酮沉淀，Sephadex G-75葡聚糖凝胶柱层析后获得了凝胶电泳均一的样品，比活力较原酶液提高了9.8倍，回收率达到了32.98%，用SDS-PAGE凝胶电泳测的纯化后的果胶酶分子量为42.2KD。

Then the migration was mainly driven by buoyancy in adjusting periods of reservoir after Neocene, it is difficult to form high continuous oil column, because of the reservoir bed being over tight.

提出了古近纪前、后的&跷跷板&式成藏模式，即明水期—古近纪油气主要由源区向西南方向运移，而新近纪后的油气运移主要靠浮力驱动，但因储层已致密化，难以形成较高的连续油柱，油、水的分异程度低。

The samples of free amino acids were prepared from bee-collected pollens of codo-nopsis pilosula, brassica campestris, typha angustifilia and papaver, through extraction with ethanol-water solution and further purified by ion-exchange chromatographic columns.

本文以党参、油菜、水烛及罂粟等4种植物的蜂集花粉进行醇—水提取，经离子交换柱后得到游离氨基酸样品，提取后的花粉残渣以6ml/l盐酸封管水解制得结合氨基酸样品。

Calcium montmorillonite was prepared by purifying LeXi bentonite with wet method two times. After purification, sodium modification of Ca-M was studied. A series of Fe/Cr-pillared montmorillonites were prepared with conventional method using sodium montmorillonite as experimental materials, and synthesis condition of Fe/Cr-PILM was studied and optimized. In order to shorten the preparation cycle of PILM by overleaping the step of sodium modification of Ca-M, the pretreatment technique for Ca-M has been pointed out for the first time. A series of PILMs were prepared with hydrothermal method using pretreated Ca-M as starting materials, which show that pretreatment of Ca-M is feasible.

然后，本文以莱西膨润土为原料，用二次湿法提纯了-2μm的钙基蒙脱石，对其进行了钠化改型研究；以改型后的钠基蒙脱石为原料，新型的铁、铬复合离子为柱化剂，研究并优化了常规离子交换法制备PILM的工艺；为了简化PILM的制备工艺，我们首次提出了蒙脱石的预处理工艺，希望通过预处理后可以省去蒙脱石的钠化工艺，以Ca-M为原料直接合成PILM。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。