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According to the frequently used methods of extraction and isolation of natural products from organic body, the freeze-dried ascidian body was exhaustively extracted with methanol/toluene ( 3 : 1 ) and then the combined extracts were filtered and the solvent was separatelyconcentrated under vacuum.

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At last the prospect of the MEA for DMFC is discussed.

最后，對(duì)直接甲醇燃料電池膜電極未來的發(fā)展進(jìn)行了展望A吖在线视频。

E. , plastic deformation developed into a critical state, local stress in dislocation-freezone will be equal to atomic bond strength, which will induce the initiation of SCC microcrack.

為了說明這個(gè)附加拉應(yīng)力在陽(yáng)極溶解型SCC中的主要作用亚洲美女模特一级A片，對(duì)不同含H〓O量的甲醇溶液，用慢拉伸法測(cè)量了SCC敏感性一级男女啪拾起来，同時(shí)測(cè)量了自然腐蝕時(shí)表層拉應(yīng)力的大小一级作爱片免费。

The number of atomic and sub-surface oxygen species may decrease with the addition of iodine.

碘的加入可使原子氧和次表層氧物種種類更單一，更有利于甲醇的氧化脫氫反應(yīng)内地自拍。

To study the expression, purification and bioactivity of human augmenter of liver regeneration in Pichia Pastoris, the expression plasmid pPICZαA- ALR was constructed and transformed into P. Pastoris by the method of electroporation transformation. Induced with 0.5% methanol, the 30 kD protein in the culture supernatant of recombinant P. Pastoris was confirmed to be rhALR by SDS-PAGE and Western blot. Quantitative analysis showed that the target protein was in a level of 66% of the total protein of the culture supernatant, with a yield of 40mg/L.we had performed DEAE anion exchange chromatography two times with excessive and regular adsorption quantity consecutively, and then the rhALR above 95% purity and 52% protein recovery could be obtained by G75 molecular sieve chromatography at last step. The bioactivity assay of the purified product showed that rhALR could stimulate the proliferation of HepG2, SMMC-7721 and NIH-3T3 in vitro.

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Aureomycin on reduction with zinc-acetic acid gives desdimethylaminoaureomycin under mild conditions and desdimethylaminodesoxyaureomycin under more drastic conditions.

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Methanol ; Diesel Fuel ; Combustion ; Optical Measurement ; Optical Radiation ; Autoignition ; Flame Propagation ; Diesel Engine

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The values of AFC50(media antifeeding concentration)at 24h on the 3rd instar larvae of Ostrinia furnacalis was 3408.31μg/ml, according to 2275.22μg/ml of media azedarach.

結(jié)果表明：蟛蜞菊4個(gè)不同部位中，以花的甲醇提取物拒食效果最好内地50岁熟妇网站，24h對(duì)亞洲玉米螟3齡幼蟲的AFC50為3392.28μg/ml中文字幕第23页，對(duì)照印楝為2228.72μg/ml。

It was used to simulate the catalytic distillation column of methyl acetate and methanol azeotrope hydrolysis combined with the macro-dynamic equation of methyl acetate hydrolysis.

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