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The studies was proceeded on the the supercritical CO2 extraction technique of rotenone from Tephrosia vogelii. The extraction influences of technology conditions were systematically groped, The research results were listed as follows:1 The analysis method applied in this paper has been proved to be suitable to technology research of the studies on the SC-CO: extraction technique of rotenone from Tephrosia vogelii. 3 indexes, extraction ratio of rotenone. extraction ratio of total compounds and rotenone content percent in total compounds weight, were carried out with HPLC quantitatively determination combined with the sample weight loss after extraction. With these 3 indexes. The extraction influences of technology conditions were evaluated by synthesis. Then the best technology conditions were ascertained for different extraction aims.2 The pretreatment of rough material should be needed before extraction. Comminuting the material to 0.28mm size is most fit to SC-CO: extraction.3 Firstly static extracting 20 min then turn to dynamic doing is the better extraction mode than other ones.4 The orthogonal experiment was conduct with 3 factors and 5 levers.
本论文通过对非洲山毛豆SC-CO_2萃取中影响萃取效果的工艺条件的研究,初步得出如下结果:(1)本论文中所采用的萃取效果评价方法适宜于非洲山毛豆中鱼藤酮的超临界流体萃取技术研究,该方法具体为:HPLC定量分析非洲山毛豆SC-CO_2萃取物中的鱼藤酮含量,再结合萃取前后处理样品的重量损失,得出鱼藤酮萃取率、萃取所得粗物质萃取率和粗物质中鱼藤酮含量三个参数,以此三个指标综合评价萃取条件对萃取效果的影响;(2)通过对原料粒度对萃取效果影响的研究,结果表明SC-CO_2萃取非洲山毛豆复叶中的鱼藤酮,原料粉碎成30目粒度叶粉时萃取效果较好;(3)通过对萃取方式与萃取效果之间关系的研究,结果表明SC-CO_2萃取非洲山毛豆中鱼藤酮应采用先静态后动态的萃取方式,静态萃取时间为20min;(4)通过温度、压力和CO_2流量三因素五水平的正交试验,结果表明温度是最主要的影响因素,压力因素对鱼藤酮萃取率的影响程度高于CO_2流量,而对于粗物质萃取率和粗物质中鱼藤酮含量CO_2流量因素高于压力。
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The combation of disparity consistency and matching cost are used to detect occlusion area. Fast and effective image segmentation is applied for extracting textureless and texture regions. The matching problem of textureless regions is then solved with constraint of disparity consistency and credibility concept. At the meantime, high credible seeds are obtained. Based on the smooth constraint of matching and disparity of seeds, dense disparity map is obtained via the adaptive-window based region growing.
然后采用视差一致性和匹配代价相结合的方法来检测遮挡区域;采用一种快速有效的图像分割算法提取了低纹理区和纹理区域,结合视差一致性和置信度约束来有效地解决低纹理区的匹配问题,同时得到一系列具有高置信度的种子点;根据立体匹配中的平滑性约束和种子点的视差,利用自适应窗口的区域增长技术最终得到致密的视差图。
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Provided are carbide derived carbon materials prepared by thermochemically reacting carbide compounds and a halogen containing gas and extracting all atoms of the carbide compounds except carbon atoms, wherein the intensity ratios of the graphite G band at 1590 cm -1 to the disordered-induced D band at 1350 cm-1 are in the range of 0.3 through 5 when the carbide derived carbon is analyzed using Raman peak analysis, wherein the BET surface area of the carbide derived carbon is 1000 m 2 /g or more, wherein a weak peak or wide single peak of the graphite (002) surface is seen at 2 = 25 DEG when the carbide derived carbon is analyzed using X-ray diffractometry, and wherein the electron diffraction pattern of the carbide derived carbon is the halo pattern typical of amorphous carbon when the carbide derived carbon is analyzed using electron microscopy.
提供了得自碳化物的碳,其通过热化学反应碳化物化合物和含卤族元素的气体并提取除了碳原子之外的碳化物化合物的全部原子制备,其中当使用拉曼峰分析法分析该得自碳化物的碳时,在1590cm -1 的石墨G波段与在1350cm -1 的无序引发的D波段的强度比为0.3至5,其中该得自碳化物的碳的BET表面积是1000m 2 /g或更大,其中当使用X射线衍射法分析该得自碳化物的碳时,在2θ=25°观察到石墨(002)面的弱峰或宽单峰,以及其中当使用电子显微法分析该得自碳化物的碳时,得自碳化物的碳的电子衍射图是代表无定形碳的晕图案。该发射体具有良好的均匀性和长寿命。可以使用比用于生产常规碳纳米管的方法更廉价的方法制备发射体。
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By extracting the leaves of Tilia mongolica using different solvents respectively, different kinds of extracts were obtained.
本文通过使用乙醇溶剂对蒙椴树叶进行连续提取,再选择不同的有机溶剂进行萃取分离,得到不同的萃取物。
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Objective To study the main technique of extracting tremella polysaccharides.
目的 研究一种提取银耳多糖的工艺技术。
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In a word, the CTAB method is most suitable for extracting genomic DNA from spores of Tremella fuciformis.
综合而言,CTAB法是五种方法中最为适合银耳芽孢基因组DNA提取的方法。
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The optimum extracting condition of β-ecdysone from tussore were investigated by using the response surface methodology.
通过单因素试验,应用响应面分析法研究了温度、乙醇体积分数、料液比和时间对柞蚕中β-蜕皮激素提取的影响,探讨以乙醇为溶剂提取柞蚕中的β-蜕皮激素的最佳提取工艺条件。
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In the extracting room, the frames are lilted out and lowered into an "uncapper" where rotating blades shave away the wax that covers each cell.
在提炼的房间里,这个结构被快速的拿出来并放到一个&没有盖&的盒子里,旋转式刀片削蜡覆盖每个蜂房。
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This article brings forward the technology and method of extracting xylose from the black corncon by natural zymotechnics and hydrolyzati unden the condition of diluted acid and ordinary pressure.
提出了用自然发酵和稀酸常压水解法从黑玉米芯中提取木糖的工艺和方法,通过红外光谱和紫外光谱确证结构,其产率达到28.65%,并讨论了影响木糖提取率的因素。
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The optimum conditions of extracting WUAX by Ba2 are as follows: WUS (the water unextractable substance that removed protein and starch):Ba2 is 1:188, the extraction temperature is 63°C, the extraction time is 3h, the extraction rate is 31.60%.
Ba2提取WUAX的最佳工艺条件为:料液比1:188,提取温度63℃,提取时间3h,提取率为31.60%;方差分析结果显示各因素对提取率影响的模型显著(P.05),提取温度的平方项对提取率的影响高度显著(P.001);最佳工艺条件下得到的提取物中WUAX含量为92.09%。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。