硅胶
- 与 硅胶 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Curcas seeds and physicochemical characteristics and fatty acid composition of the seed oils, among the 6 sources.
而后采用脱脂后水浴醇提的方式大量提取,结合大孔吸附树脂和硅胶柱层析
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The results showed that the ultrasonic extraction is a rather ideal method of extracting red P. tha fortuneana pigment. Cyanidin3glucoside can be hydrolysised to aglycon cyanidin under the conditions of 90℃, 9%HCl and 11min.Silica gel thinlayer chromatography with developping agent benzene∶ethyl acetate∶formic acid = 2∶2∶1 is better to separate cyanidin. Cyanidin is stable to heat and light, unstable to Zn2+ and Fe3+ and Cu2+, insensitive to Co2+ and Bi3+, befitting to acidic condition.
结果表明,超声提取法是提取火棘红色素的较理想方法;矢车菊素3葡萄糖苷在90℃和9%盐酸中水解11 min,可以顺利得到其苷元矢车菊素;以苯、乙酸乙酯、甲酸(2∶2∶1)为展开剂的硅胶薄层层析法分离矢车菊素的效果较好;矢车菊素对热和光较稳定,在酸性条件下稳定,对Co2+和Bi3+不敏感,对Zn2+、Fe3+、Cu2+不稳定。
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Under the optimum conditions of a cyclopentene amount of 1.0 mol, a molar ratio of cyclopentene to water of 0.25, a reaction temperature of 120 ℃, a reaction time of 4.0 h, a main catalyst dosage of 4.0 g and a cocatalyst dosage of 0.8 g, the yield of cyclopentanol reached 68.6%.
确定适宜的反应条件为:环戊烯1.0 mol,n﹕n=1﹕4,反应温度120 ℃,反应时间4.0 h,硅胶负载铌酸主催化剂用量4.0 g,三(3,6-二氧杂庚基)胺助催化剂0.8 g。在此反应条件下,环戊醇收率68.6%。
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Cyclopentanol was synthesized from cyclopentene and water through hydration reaction using HNb3O8·H2O/SiO2 as main catalyst and tris(dioxa-3,6-heptyl)amine (TDA-1) as cocatalyst.
在以硅胶负载铌酸为主催化剂、三(3,6-二氧杂庚基)胺为助催化剂的作用下,以环戊烯和水为原料,通过水合加成反应合成了环戊醇。
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Among them, 2 were treated by CO2 laser and the laryngeal cavity was exposed by distending laryngoscope under general anesthesia; 13 were treated by bipedical muscle flap. And 2 were selected by excising the stenosis and jumping together. Results: All of the patients achieved decannulation in the end.
根据情况分别采用支撑喉镜下CO2激光切除术,双蒂胸骨舌骨肌瓣修复术,狭窄部分切除+端端吻合术对17例喉瘢痕性狭窄患者进行治疗,部分患者放置硅胶T形管,术后随访时间均在3年以上。
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The adsorption of decyl and octyl Me sulfoxides at the silica/aq. solution interface and the contact angles of sulfoxide solns. on quartz were measured.
测定了癸基和辛基-甲亚基亚砜在硅胶/水溶液界面的吸附以及溶液在石英界面的接触角。
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The reactive model of SiO2 in production of feed-grade dicalcium phosphate, and the effect of pH on the process of gelification of silica gel are discussed, also the distribution and form of SiO2 is studied and ultimately the elimination methods of SiO2 is given.
论述SiO2在饲料级磷酸氢钙生产中的反应模式,pH对硅胶凝胶化过程的影响。研究SiO2的分布及形态,提出了生产中SiO2的消除方法。
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The reactive model of SiO 2 in production of feedgrade dicalcium phosphate , and the effect of pH on the process of gelification of silica gel are discussed, also the distribution and form of SiO 2 is studied and ultimately the elimination methods of SiO 2 is given.
论述 Si O2 在饲料级磷酸氢钙生产中的反应模式,p H对硅胶凝胶化过程的影响。
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The effect of the series of dicarboxylic acids and metal ions on the crystallization of calcium oxalate was investigated in silica gel system.
本文在硅胶体系内,研究了不同二元羧酸及金属离子对CaOxa晶体生长的影响。
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Methods The constituents in the 60% ethanol extract 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.
采用硅胶、Sephadex LH-20、ODS柱色谱分离骨碎补根茎的活性成分,应用理化方法及1D-NMR、2D-NMR方法确定化学结构,并检测对UMR 106细胞增殖的影响。
- 推荐网络例句
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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&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。