FT-Raman, normal Raman spectra of artemisinin in solid state and surface-enhanced Raman scattering spectra of 1 ?10-5 mol/L artemisinin aqueous solution were recorded. 1756 Cm-1 hexat. lactonic ring vibration which was shown strong in FT-Raman and normal Raman spectra disappeared in SERS spectra. This phenomenon appeared to result from the broken of lactonic ring.

本文對固態(tài)青蒿素的FT-Raman光譜和普通Raman光譜以及低濃度(1×10^-^5mol/L)青蒿素水溶液的表面增強Raman散射光譜進行了檢測，著重觀察了1756cm^-^1六元內酯環(huán)振動譜帶自拍黄片，發(fā)現(xiàn)其在FT-Raman和普通Raman光譜中表現(xiàn)為強振動99精品视频在线播放，而在SERS光譜中此振動譜帶消失91视频精品免费品全正版，說明分子內酯環(huán)發(fā)生了破裂大波美女网站。

In this paper, the action mode of NMA in the traditional polyacrylate emulsions was studied by extracting the traditional self-curable PA latex film before curing and comparing the properties of two kinds of model latices A and B. Where model A was prepared according to the traditional self-curable PA latex and the model B was a blend of polyacrylates emulsion and an aqueous solution of poly-NMA. The total proportions of the ingredients were adjusted just the same as of model A. The influences of monomers, the dosages of crosslinking monomer A and emulsifier etc.

文中通過構造&共聚&和共混兩個膠乳模型，研究了常規(guī)&自交聯(lián)&PA膠乳中N-羥甲基丙烯酰胺的作用模式一级国产特黄录像；分析討論低溫水性PA膠乳的聚合工藝及影響因素视色4s影院在线观第一视频看；通過分析膠膜的溶失率、吸水率国产精品无码久久综合网爱天下、力學性質和Tg爱情岛伦坛自拍亚州AV无码入口，及用掃描探針顯微鏡觀察薄膜的微觀表面形態(tài)和粗糙度的測試，研究水性PA膠乳的成膜性能国产古装一级牲交高潮片、穩(wěn)定性及基本性能黄片视频进入；測試并分析膠乳作為涂料印花粘合劑和織物涂層劑的使用性能；通過核殼聚合技術對無甲醛膠乳產(chǎn)品進行性能優(yōu)化一级A片自慰超刺激无码。

Lycorine, lycoramine and galanthamine in Lycoris radiata were microwave-assisted extracted and determined by HPLC using triethylamine aqueous solution (pH9.00)-acetonitrile-methanol as the mobile phase.

采用微波輔助提取法提取石蒜中的石蒜堿小18箩利洗澡无码视频网站、力可拉敏和加蘭他敏生物堿，建立了微波輔助提取／HPLC測定石蒜中這3種生物堿的分析方法什么网站可以免费看A片。

The fourteen complexes of mandelic acid with rare earth elements in aqueous solution have been prepared.

在水溶液體系中日韩AV无码超碰一区二区三区，用苯羥乙酸直接與碳酸稀土作用，合成了十四種苯羥乙酸稀土配合物肏屄在线观看国内。

The present study used Hypersil Hypercarb as the column connected to the UV and ELSD detectors. Using 0.1% formic acid aqueous solution and methanol as the mobile phase, the composition of a total of 9 compounds, catalpol (9) in Rehmanniae Radix, 5-hydroxymethylfurfural (5-HMF)(8) in Rehmanniae Preparata Radix, and the various carbohydrates including glucose (1), sucrose (2), melibiose (3), manninotriose (4), raffinose (5), stachyose (6), and verbascose (7) in Radix were analyzed simultaneously within 60 minutes.

本文以Hypersil Hypercarb作為分離管柱6080免费三级片，串聯(lián)UV及ELSD檢測器，使用0.1%甲酸水溶液及甲醇為流動相猛操视频，於60分鐘內可同時分析生地黃中的catalpol (9)久久伊人中文字幕色综合、熟地黃中的5-Hydroxymethylfurfural (5-HMF)(8)，及地黃所屬的各種醣類成分glucose (1)免费黄图视频、sucrose (2)www.saomz02.com、melibiose (3)、manninotriose (4)顶级吹潮视频在线观看、raffinose (5)www日本com黄色、stachyose(6)、verbascose (7)共計9種化合物的含量又黄又粗又爽免费观看日本。

The precursor of sodium titanate nanotubes is prepared by: reacting titanium dioxide, metatitanic acid or titanate ester in 20-80 wt.% NaOH aqueous solution at 100-140 deg.C for 12-72 h, washing with water, filtering and drying.

用于反應的前驅體納米管鈦酸鈉由二氧化鈦国产乱伦窝边操、偏鈦酸或鈦酸酯與20-80wt％NaOH水溶液在100-140℃反應12-72h后用水洗去NaOH，過濾美国xxxx69、干燥制成美国潢色片AAAwWwA。

A new water-blocking swellable particle with good temperature-tolerance and salt-tolerance was synthesized from acrylamide and 2-acrylamido -2 - methylpropane sulfonic acid , by means of aqueous solution polymerization.

水膨體是近年來中外廣泛研究應用的一種調剖堵水劑，但由于陸上油田注水開發(fā)地層的復雜性色呦呦在线视频免费观看，對其性能的要求也越來越高一级国产精品毛片视频。

AM - NaAMPS - DEAM terpolymer was synthesized from acrylamide, Sodium - 2 - acrylamido - 2 - methylpropane sulfonate and N,N - diethylacrylamide by free radical initiation copolymerization in aqueous solution.

以丙烯酰胺，2－丙烯酰胺－2－甲基丙碳酸鈉99久久国产综合精品婷婷，N什么视频可以看毛片，N－二乙基丙烯酰胺為單體，通過在水溶液中自由基引發(fā)共聚合91精品视频网，合成出了AM－NaAMPS－DEAM三元共聚物91页国产视频。

In this paper, we have investigated and discuss the appropriate conditions under which the developing reaction to responds to Phospho Vando Molybdic acid and basic dye malachite green in aqueous solution by conducting experiments, through which the best quantity about addition of reagents can be fixed.

研究了磷釩鉬酸與堿性染料孔雀綠在水溶液中的顯色反應，確定了最佳反應條件视频一区二区在线观看，并將這種方法應用于復混肥中磷含量的測定日韩夜色精品影院视频，試驗結果表明，此方法的靈敏度高国产丝袜在线观看视频黄、重現(xiàn)性好亚洲黄片视屏1234、準確度高。

Properties : White crystallization or powder , proportion 1.735 , melting point is 287 ℃, apt to dissolve in water , ethanol and propanone , aqueous solution is neutral , turn into the blood red sulphur cyaniding iron with molysite , reactionless with inferior molysite, salt function turns into dark blue sulphur cobalt cyanide, turn into white sulphur silver precipitating or black sulphur copper cyanide cyanide to precipitate with the silver salt or copper salt function with cobalt.

白色結晶或粉末伊人草在线视频，比重 1.735 日本色一区二区三区，熔點 28 7 ℃亚洲无视频区，易溶于水、乙醇和丙酮911在线观看国产涩涩，水溶液呈中性超碰欧美图片zxxxx，與鐵鹽生成血紅色的硫氰化鐵，與亞鐵鹽則無反應80老女人乱婬视频，與鈷鹽作用生成深藍色的硫氰化鈷天天日天天干天天天添，與銀鹽或銅鹽作用生成白色的硫氰化銀沉淀或黑色的硫氰化銅沉淀。