We investigated constituent of triterpenoid saponins ofAlbizzia, two new compounds together with two known compounds were isolated from Albizzia julibrissin Durazz. by using column chromatography (macroreticular resin, silica gel, Sephadex gel, reverse phase silica gel),preparative HPLC methods et al.On the basis of spectroscopic analysis, including IR,ESI-MS,~1H-NMR,~(13)C-NMR,HMBC,HMQC,~1H-~1HCOSY and chemical methods, the structure of two new compounds were identified as 3 - O -[β-D-xylopyranosyl(1→2)-β-D-fucopyranosyl (1→6)-β- D -2- deoxy - 2 - acetoamidoglucopyranosyl] -21-O-[(6S)-2- trans- 2,6-dimethyl - 6 - O-β- D - quinovopyranosyl -2,7- octadienoyl] - acacic acid- 28 - O-β-D-glucopyranosyl(1→3)[α-L-arabinofuranosyl(1→4)]-α-L-rhamnopyranosyl(1→2)-β-D-glucopyranoside acacic acid 3- O -β- D- glucopyranosy(1→3)-β- D- fucopyranosl(1→6) [β-D- xylopyranosyl (1→2)]-β-D-glucopyranoside ;two known compounds were acacic acid lactone 3- O -β-D- xylopyranosyl-(1→2)-β-D-fucopyranosl (1→6)- 2-deoxy -2 -acetoamido -β-D- glucopyranoside ; acacic acid lactone 3- O-β-D-xylopyranosyl(1→2)-α-L- arabinopyranosl (1→6)- 2- deoxy - 2- acetoamido -β-D-glucopyranoside . The study lays chemical foundation and chemical reference substance for enhancing quality standard of Albizzia julibrissin Durazz.

本研究論文在綜述國內(nèi)外對合歡屬Albizzia三萜皂苷化學(xué)成分和藥理作用研究進(jìn)展的基礎(chǔ)上，利用傳統(tǒng)植化分離手段和現(xiàn)代分離技術(shù)www.91视屏，包括大孔樹脂在线看片黄、硅膠、葡聚糖凝膠欧美激情亚洲综合、反相硅膠等柱色譜涩涩的视频在线观看，制備高效液相色譜法等技術(shù)從中藥合歡皮中分離得到了4個(gè)化合物欧美激情日日噜一片黄，其中，2個(gè)新化合物和2個(gè)己知化合物无码激情免费视在线观看，并進(jìn)一步通過現(xiàn)代分析技術(shù)IR18岁以上禁止看的污视频在线观看，ESI-MS，~1H-NMR欧美日屄，~(13C-NMR九九这里有精彩视频，HMBC，HMQC无码久久久久久欧洲，~1H-~1HCOSY等和化學(xué)方法鑒定了2個(gè)新化合物的結(jié)構(gòu)分別是：3-O-[β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖基]-21-O-[(6S)-2-反式-2精品中文亚洲字幕，6-二甲基-6-O-β-D-吡喃雞納糖基-2，7-辛二烯酸基]-金合歡酸-28-O-α-L-呋喃阿拉伯糖基(1→4)[β-D-吡喃葡萄糖基(1→3)]-α-L-吡喃鼠李糖基(1→2)-β-D-吡喃葡萄糖苷国产黄址在线观看，金合歡酸3-O-β-D-吡喃葡萄糖基(1→3)-β-D-吡喃夫糖基(1→6)[β-D-吡喃木糖基(1→2)]-β-D-吡喃葡萄糖苷一级做a爰黑人有硬又粗；2個(gè)已知化合物結(jié)構(gòu)分別是：金和歡酸內(nèi)酯3-O-β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷，金和歡酸內(nèi)酯3-O-β-D-吡喃木糖基(1→2)-α-L-吡喃阿拉伯糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷黄色精品片免费看。

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This paper analyzes the connection between dye decentralization and stability of gel ink , expounds the stability mechanism of gel ink , plus, it excogitate an experiment methods which could accurately evaluate the stability of gel ink at short notice.

分析了顏料分散與中性墨水穩(wěn)定性的關(guān)系，論述了中性墨水的穩(wěn)定機(jī)理狠狠久久噜噜老熟女，并研究出一套可在短時(shí)間內(nèi)準(zhǔn)確有效地評價(jià)中性墨水穩(wěn)定性的實(shí)驗(yàn)方法国产区黄A片精品视频大。

Result show:the solution,extracted from rat rail tendons,consist mainly of type I collagen;No growth of bacteria in 37℃ thermostatic culture box for 72 hours;Absorbing the height of ultraviolet-spectrophotometry is 230 nm by using flicker photometer examination;Amino acid in type I collagen consist of aminoacetic acid(40 per cent) and proline(14.3 per cent);Under microscope:collagen gel netted constraction consist of original collagen fibril that had been fairly well-distributed and had a quite regular striate lines ;The collagen solution prepared collagen gel matrixes in 37℃ thermostasis for culture cells and also prepared collagen solid film by washing collagen gel with a phosphate solution for plasty surgery materials.

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The results showed that the total dissoluble proteins hands of 8% and 10% gel were 91 and 97, respectively, and the seed salt soluble proteins bands of 10% gel were 69; All of the five alfalfa species have their own characteristic bands, which are different in number, distribution, width, and concentration; Among three methods, the five species' seed dissoluble protein fingerprints of 10% gel' bands is relatively more, which genetic diversity scattered in A, B and C regions, and can be repeated in different experiments. So it's the best fingerprint. The fingerprints of the seed dissoluble proteins and seed salt soluble proteins of five species are unanimous, which showed that: the hybrid has the nearest genetic distance with Medico go sativa cv.

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Our country produces late , among them silica gel product starting A, orbed B type silica gel Yu 1973 Enterprise develops out and industrialization produces some annual Shanghai chemical industry, have filled in the blank space packing in the homeland with silica gel.

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Mango Shower Gel 60 ml, Coconut Shower Cream 60 ml, Passion Fruit Shower Gel 60 ml, Strawberry Shower Gel 60 ml and Satsuma Shower Gel 60 ml.

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Trans-Blot Plus Cell 170-3990 Trans-Blot Plus Cell With Plate Electrodes and Super Cooling Coil, includes 3 gel holder cassettes, buffer tank, lid with power cables, 6 fiber pads, 1 pack blot absorbent filter paper (26.5 x 28 cm, 30 sheets), roller, stirbar 170-3991 Trans-Blot Plus Cell and PowerPac HC Power Supply Accessories 170-3994 Trans-Blot Plus Gel/Cassette Assembly Tray 170-3995 Fiber Pads, 27 x 28.5 cm, 2 170-3996 Blot Absorbent Filter Paper, 26.5 x 28 cm, 60 sheets 170-3997 Stirbar 170-3998 Trans-Blot Plus Roller, 6 wide 170-39 Trans-Blot Plus Gel Holder Cassette With Clamps 170-4990 Trans-Blot Plus Super Cooling Coil 170-4991 Trans-Blot Plus Platinum Anode Plate Electrode 170-4992 Trans-Blot Plus Stainless-Steel Cathode Plate Electrode 170-4995 Trans-Blot Plus Cell Buffer Tank 170-4996 Trans-Blot Plus Cell Lid With Cables 170-4997 Gel Holder Cassette Clamps, for Trans-Blot Plus cell, set of 3 9 規(guī)格:說明:運(yùn)用Mini-PROTEAN II 多道篩選儀,可以快速有效地篩選 40 種不同的抗體或血清,無需把western

轉(zhuǎn)印條件可調(diào)，能在很大的分子量跨度上獲得最佳轉(zhuǎn)印效果*耐用的板式電極能產(chǎn)生強(qiáng)大而均一的電場草国产视频，而且電極在槽內(nèi)的位置靈活可換黄页网址在线；不論運(yùn)行1、2 或3 個(gè)轉(zhuǎn)印夾广元瓜温，電極間距可調(diào)節(jié)到最小以獲得最大的場強(qiáng)和轉(zhuǎn)印效率*凝膠支架轉(zhuǎn)印夾保證整個(gè)凝膠與印跡膜表面的均衡接觸*轉(zhuǎn)印夾的鉸鏈設(shè)計(jì)能防止凝膠滑動96在线精品视频免费观看，便于轉(zhuǎn)印夾組裝*顏色標(biāo)記的轉(zhuǎn)印夾及電極板確保在轉(zhuǎn)印槽內(nèi)的正確定向*特級冷卻芯和冷卻水循環(huán)器進(jìn)行溫度調(diào)節(jié)―可理想地用于天然酶或高強(qiáng)度轉(zhuǎn)印看一级日屄黄片免费视频，或用于延長轉(zhuǎn)印時(shí)間時(shí)減少緩沖液的損耗*可選擇的組裝盤是凝膠三明治和轉(zhuǎn)印夾組裝的理想選擇 Trans-Blot Plus 轉(zhuǎn)印槽能從單向和雙向大格式凝膠上均一、高效地轉(zhuǎn)移蛋白―配合使用新推出的 PowerPac HC 電源亚洲国产美女网站，多數(shù)蛋白都可在1530 分鐘內(nèi)完成轉(zhuǎn)印。

The morphological structure of cured vinyl-ester resin and the formation of two-phase structures in vinyl-ester resin has been studied by using SEM and differential scanning calorimetry.The results demonstrated the existence of clusters of gel-particles with a size of about 20 μ m,each cluster of gel-particles containing many gel-particles with coral-like structures.The formation of gel-particles resulted in two-phase structure characterized by the two peaks in the rescanned DSC thermographs of the resin. The cure conditions (temperatures,post-cure) affected microstructure in the cured resins.

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The organic smectite gel is prepared with inorganic smectite gel prepared with smectite mineral, such as Mg-Li smectite, as material and through the following steps: acid activating inorganic smectite gel; performing organic covering reaction under the action of ultrasonic wave; filtering, drying, and crushing to obtain the final organic smectite gel product.

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