硅胶

Methods The constituents in the marcroporous adsorption resin 50% EtOH eluent of Drynaria fortunei were isolated by a combination of silica gel, Sephadex LH-20 and ODS chromatographies and their structures were identified by spectral methods.

利用硅胶、Sephadex LH-20、ODS柱色谱及制备型HPLC等方法进行分离纯化，根据化合物的理化性质及波谱数据鉴定结构。

The process of extraction of antimicrobial substance from Eleocharis tuberose peel with ultrasonic were studied; the properties of antibacterial substances were studied; antibacterial substances was isolated by TLC and silica gel colum chromatography, and the structure of antibacterial substances were identified useing liquid chromatograph mass spectrometer.

包括：采用超声波法提取荸荠皮抑菌物质并获得最佳工艺条件；研究了荸荠皮提取物的稳定性及其对多种菌的抑制作用；通过薄层层析和硅胶柱层析对抑菌物质分离纯化后对抑菌成分进行了初步的结构鉴定。

During epithesis, nasal columella were extended, collapse nasal alar cartilages were l iberated and fixed in symmetrical positions, injured upper l ip was extended with nasolabial flap or to "tongue-l ike" flap on nasal base.

术中延长鼻小柱，游离塌陷鼻翼软骨并悬吊固定于对称位置，鼻槛组织瓣或鼻底舌形瓣延长患侧上唇，其中11 例植入L 形硅胶假体隆鼻。

A 4.70 g partially pure ginsenoside Rd was obtained together,the yield of which was 15.6%.We adopt the mothod of crystallization to epurate.

结果表明，在硅胶柱分离中，从30 g二醇类皂苷分离得到含人参皂苷Rd的皂苷9.46 g，得率为32.5%，得到较纯人参皂苷Rd4.70 g，得率为15.6%。

The dry seeds(silica gel dry or 6.5%MC PVE filmtight)could maintain high germinative powerand germination percentage and vigor index afterbeing stored for two summer seasons.

在硅胶干燥和干燥种子（6.5%MC）塑料袋密封贮藏条件下，种子经过两个夏季的贮藏仍能保持较高的发芽势、发芽率及活力指数。

Gingerols in ginger oleoresin were separated by AB8 macroporous adsorption resin and silica gel column chromatography. The samples were characterized by the gas chromatography-mass spectrometry method.The peak area normalization method was used to determine the relative percentage of the components and the rate of accumulation of gingerol was determined by contrasting with gingerol standard samples. The results showed that gingerols was concentrated on the 3rd and the 4th parts.

采用硅胶柱层析和AB8大孔树脂吸脱附两种方法分离姜油树脂中的姜酚，采用气相色谱-质谱(gas chromatography-mass spectrometry， GC-MS)对分离样品进行表征，用峰面积归一化法对测试样品的气相色谱-质谱结果进行分析，确定了分离样品中各组分的相对峰面积百分比。

Methods Column chromatography over normal phase silica gel, reversed phase silica gel, Sephadex LH-20, and recrystallization techniques were used to isolate and purify constituents from Halenia elliptica.

利用正相硅胶柱色谱、Sephadex LH-20柱色谱、反相高效液相色谱和重结晶等手段进行分离

College of Veterinary Medicine, China Agricultural University, Beijing 100094, China Abstract: A method has been developed to determine residual stilbenes such as diethylstilbestrol, dienestrol and hexestrol in animal tissues using solid phase extraction and gas chromatography-mass spectrometry.

动物组织样品在碱性条件下用乙酸乙酯提取，经碳酸钠溶液液-液分配净化，再用硅胶柱固相萃取净化，洗脱液均分成两份后经氮气吹干，分别用双三甲基硅基三氟乙酰氨和七氟丁酸酐衍生，采用选择离子监测模式进行测定，外标法定量。

Based on biological experiments, mango glycoside is used as raw material; under the condition with phenol and hydroiodic acid, carbon-carbon bonds are broken to produce the crude product of mango aglycone; the crude product is separated and purified through silica gel column chromatography so that the mango aglycone is separated; the yield rate reaches 12 percent, the purity is higher than 95 percent, and the reproduction performance is good; the IGTT of C57BL/6 normal mice is effectively improved with the norathyriol; and simultaneously the quantity of insulin secretion induced by glucose in vivo for the C57BL/6 normal mice can be improved with the norathyriol.

通过生物学实验证明，本发明所涉及的以芒果苷为原料，在苯酚和氢碘酸条件下，使得碳-碳键断裂，制备得到芒果苷元粗品，再通过硅胶柱层析分离纯化得到芒果苷元的方法使得其产率可达12％、纯度大于95％，且重现性好；norathyriol可使C57BL/6正常小鼠IGTT有明显改善；同时norathyriol可提高C57BL/6正常小鼠体内葡萄糖诱导的胰岛素分泌量。

Quercetin, quercetin rhamnoside, hyperin, syringoside and eleutheroside E wereisolated from the flower of Acanthopanax senticosus. Searching bioactive natural compound and establishing quality evaluation standard arefocused on this experiment. Using cold immersing of 70% methanol to extract from flower ofAcanthopanax senticosus and integrating macroporous resin, silica gel column chromatography,sephadex gel to abstract. We obtained five monomer compounds (compoundⅠ-compoundⅤ),quercetin, quercetin rhamnoside, hyperin, syringoside and eleutheroside E. That five compoundswere determined by HPLC in eight parts of Acanthopanax senticosus (flower, root, leaf fruit,shoot, new shoot, phloem of shoot, skin of shoot), which provide science bases for establishingquality evaluation system and settle infarctate foundation.

本文以从刺五加花蕾中寻找具有重要生物活性的天然化合物和建立质量评价标准为主要目的，对其化学成分进行研究，采用70％甲醇冷浸的方法对刺五加花蕾中的成分进行提取，运用大孔树脂吸附色谱法、硅胶柱层析法以及葡聚糖凝胶柱层析相结合的方法进行分离，得到5种单体化合物，分别为槲皮素、槲皮素鼠李糖苷、金丝桃苷、紫丁香苷和刺五加苷E；利用高效液相色谱法对这5种化合物在刺五加花蕾中的含量进行了测定；考察了8个部位(花蕾、根、叶、果、茎干、新枝、茎韧皮部、茎皮)中这5种化合物的含量分布情况，并作一比较，为今后建立刺五加质量评价体系提供了科学依据，奠定了坚实的基础。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。