求助 化工类英文翻译 急 我是学生 谢谢!
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AnefficientMAEmethodintegratedwithsaponificationpro-cesshasbeendevelopedforsolanesolrecoveryfromtobaccoleafmaterials.Theoptimalextractantishexane:ethanol(1:3,v/v)with0.05... An efficient MAE method integrated with saponification pro- cess has been developed for solanesol recovery from tobacco leaf materials.The optimal extractant is hexane:ethanol(1:3,v/v) with 0.05 mol/l NaOH.Compared to heat-reflux extraction,the new MAE reduced extraction time and obtained high percentage extracted of solanesol,and showed great potential for efficient sample preparation and large-scale industrial application in the near future. 展开
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- linna0417 2011-06-12 00:00:00
- 一个GX的微波皂化法亲塞斯集成已经从烟叶铺料,茄尼醇的Z佳萃取剂回收开发的正己烷:乙醇(1:3,v / V选择)用0.05摩尔/升NaOH.Compared热回流提取,新的微波提取时间缩短,并获得高比例提取茄尼醇,表现出GX的样品制备和大规模在不久的将来工业应用的巨大潜力。
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- 请叫我王爷呗 2011-06-13 00:00:00
- 一个有效的方法,结合微波皂化亲 塞斯已经制定了从烟叶中茄尼醇复苏 铺料是Z佳的萃取剂正己烷:乙醇(1:3,v / V选择) 用0.05 mol / L的NaOH.Compared热回流提取, 新的微波提取时间缩短,并获得高比例 茄尼醇提取和显示,有效的巨大潜力 样品制备和大型工业中的应用 不久的将来。
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- 求助 化工类英文翻译 急 我是学生 谢谢!
- AnefficientMAEmethodintegratedwithsaponificationpro-cesshasbeendevelopedforsolanesolrecoveryfromtobaccoleafmaterials.Theoptimalextractantishexane:ethanol(1:3,v/v)with0.05... An efficient MAE method integrated with saponification pro- cess has been developed for solanesol recovery from tobacco leaf materials.The optimal extractant is hexane:ethanol(1:3,v/v) with 0.05 mol/l NaOH.Compared to heat-reflux extraction,the new MAE reduced extraction time and obtained high percentage extracted of solanesol,and showed great potential for efficient sample preparation and large-scale industrial application in the near future. 展开
- 药学类英文翻译!!!急!!!
- bicyclam coreceptors Cyclams Monocyclam pphenylenebis Bipharmacophore covalentlycoupled metalcyclams dizinc
- 急!急!急需中文摘要的英文翻译,麻烦大家帮我解决下,谢谢
- 纳米材料改性PVC(polyvinylchloride,聚氯乙烯)树脂能改善其力学性能,近年来成为研究的热点。本文提出了,添加纳米TiO2使PVC增强增韧的实验方法。试想通过此法,改善PVC的力学性能。... 纳米材料改性PVC (polyvinyl chloride,聚氯乙烯)树脂能改善其力学性能,近年来成为研究的热点。本文提出了,添加纳米TiO2使PVC增强增韧的实验方法。试想通过此法,改善PVC的力学性能。设计了实验过程。Z后通过拉伸实验、冲击实验、维卡软化点温度的测定和低温试验,证明了添加纳米TiO2对材料力学性能的影响,并找出纳米TiO2对PVC材料性能改进的一些规律。研究结果表明:选择适当的加工助剂,加入纳米TiO2后PVC的强度和韧性都得到改善,从而达到PVC增强增韧的作用。 展开
- 求一篇化工类英语文献,带中文翻译,谢谢
- 求一篇化工类英语文献,带中文翻译,谢谢,原文Z好是PDF格式
- 我是一个12岁的学生想学吉他
- 可是之前我对他一点都不了解身边的人也都不懂,买吉他也不知道买什么样的?学吉他也不知道去哪里学?还听说学吉他很苦,可我还是很想学... 可是之前我对他一点都不了解身边的人也都不懂,买吉他也不知道买什么样的?学吉他也不知道去哪里学?还听说学吉他很苦,可我还是很想学 展开
- 急求英文翻译is presented here. Non-linear series are decomposed into
- ispresentedhere.Non-linearseriesaredecomposedintostationaryIMFsandresidualcomponents,andthentheselectedhighfrequencyIMFsarede-noisedwiththewaveletmodel.Finally,theEMDreco... is presented here. Non-linear series are decomposed into stationary IMFs and residual components, and then the selected high frequency IMFs are de-noised with the wavelet model. Finally, the EMD reconstruction gives the extracted system error series. Some evaluation standards for proving the effectiveness of the proposed methodology are also given. In this paper, DD systematic errors are isolated with the EMD-Wavelet model and integrated into the baseline computation for a higher accuracy baseline solution. Experimental results show improvements in reliability and the residual series of the baseline solution. 展开
- 英文翻译
- Determination of the Illuminating Power of Chal-gas.—The value of coal-gas naturally depends chiefly on its .illuminating power. This can be determined in various ways. Of these, the most practically useful and easiest is the photometri... Determination of the Illuminating Power of Chal-gas.—The value of coal-gas naturally depends chiefly on its .illuminating power. This can be determined in various ways. Of these, the most practically useful and easiest is the photometric method, the amount of light emitted by a gas flame, burning at the rate of five cubic feet per hour, being compared with that given off by a standard sperm candle consuming 120 grains of sperm (7*79 grams) per hour. For this purpose, Btmsen's photometer, see Fig. 211, is employed. This depends upon the fact that the intensity of the illumination from a luminous point is inversely proportional to the square of the distance of the illuminated surface from that point. For flames- of coal-gas or candles, this law is of course only approximately true, but sufficiently so for practical purposes, and it, therefore, serves as the basis of a useful, though not very accurate, method of testing the illuminating power of coal-gas. All that is neces-* savy is to ascertain the distances at which the standard candle and the gas-flame both produce the same illuminating effect; it then only remains to take the squares of these distances in the inverse order to obtain the relative illuminating power of the two sources of the light. In Bunsen's photometer, the surface illuminated by the candle- and gas-flames, consists of a diaphragm of paper, Fig. 211, which, with the exception of a small circle in. the centre, Fig. 212, has been painted over with a solution of spermaceti in benzene, which renders the whole surface, with the exception of the central disc, transparent. This diaphragm is placed in a frame fixed to a moveable slide, which fits on to the long divided tod of the photometer (o'o), Fig. 211. Over this frame is placed a black shade containing two pieces of mirror-plate ao fixed, that when the observer looks at the diaphragm in a direction at right angles to the divided rod, he sees in the two mirrors a reflection of each side of the waxed paper At the right hand extremity of the rod is fixed the standard candle, whilst at the other the gas flame is allowed to burn, the rate of its combustion being accurately determined by means of the experimental gas-meter (p). 展开
- 英文翻译
- 高手帮忙翻译下下面的文字,翻得好的会追加分数,请不要机翻 研究光在生物组织中的传播特性是生物医用光学的重要内容。它在医学上的应用有重要的理论以及实际意义,既可以无损地探测组织的光学性质参数,又可以用来成像。而生物组织折射率是组织的重要光学... 高手帮忙翻译下下面的文字,翻得好的会追加分数,请不要机翻 研究光在生物组织中的传播特性是生物医用光学的重要内容。它在医学上的应用有重要的理论以及实际意义,既可以无损地探测组织的光学性质参数,又可以用来成像。而生物组织折射率是组织的重要光学特性参数之一,这一数据的精确测量与否关系到生物组织光学众多研究的基础。 本论文根据全反射原理,克服了组织的强散射问题,设计了一个由白光光源,光纤,透镜,单等腰直角棱镜,光谱仪等构成的测量装置,通过测量临界状态时,白光进入直角棱镜的入射角A,以及棱镜的折射率N,再由公式计算出生物组织的折射率。 该实验的设计是使白光经棱镜散射,从中选取赤绿蓝三色不同波长的光进行测量。经过试验,所得生物组织折射率的数据资料基本与参考文献相同,用结果论证了该测量方法有效可行,为进一步完善生物组织光学的特性参数研究提供了又一方法。 展开
- 英文翻译
- 9.3Anti-collisionsystemsSomeanti-collisionsystemsworkusingtheprinciplesof:–sonar;–radar;–lowfrequencynear-fieldinduction.MiscellaneousSonarAlthoughtheprincipleisverygo... 9.3 Anti-collision systems Some anti-collision systems work using the principles of: – sonar; – radar; – low frequency near-field induction. Miscellaneous Sonar Although the principle is very good, there is the danger with this system that a strong wind can blow the sonar waves away. Radar Radar usually uses advanced microwave or Doppler radar technology combined with some digital signal processing. Safety circuits are builtin, and the system can sense objects up to a distance of about 40 m. The maximum crane travel speed is about 200 mmin. The radar beam which is sent out will be reflected by solid objects and will be received by the same radar antenna. It can measure the distance between two objects and also the speed with which the object is approaching the sensed object. Low-frequency near-field induction system These low frequency systems work at a frequency of approximately 90 to 220 kHz and have a working maximum range of about 30 m. A transmitter and antenna is installed on the first crane and a receiver and antenna on the adjacent crane. With this system it is possible to install three distance steps between the cranes, which should be respected. For example: – at 30 m distance an audible signal is given; – at 20 m distance the crane speed is decreased; – at 5 m distance the final stop signal is given. 不要机器翻译,通顺流畅点 展开
- 急求助一篇学习心得!
- 关于学习数字电子课程设计的心得!
- 辩论赛,急急急!!!!!!!!(我是正方)
- 印刷媒介优点:读者拥有主动权。读者在接触印刷媒介时,可以自由的选择阅读的时间和地点,这一点上它优于电子媒介,电子媒介的受众处于一种被动的地位,受众必须在一定的时间或地点才... 印刷媒介优点:读者拥有主动权。 读者在接触印刷媒介时,可以自由的选择阅读的时间和地点,这一点上它优于电子媒介,电子媒介的受众处于一种被动的地位,受众必须在一定的时间或地点才能接触到其内容。由于电子媒介的传统方式是线性的,所以受众如果想回头再看,必须付出额外的代价,比如将电视节目录下来。可以说,印刷媒介较为充分的照顾到了受众的选择性。 展开
- 我是计算机嵌入式专业的学生,迷茫,求帮助!!!
- 我是计算机嵌入式专业大二的学生,平时只工读课本,现在发现这样不行了,我关于电脑的知识了解的不多,现在的专业的东西,也只学到了C和C++,我想问下,我通过什么方式可以了解到更多有关电脑的知识,我想学一些嵌入式专业的东西,但现在不知道学什么,困惑中... 我是计算机嵌入式专业大二的学生,平时只工读课本,现在发现这样不行了,我关于电脑的知识了解的不多,现在的专业的东西,也只学到了C和C++,我想问下,我通过什么方式可以了解到更多有关电脑的知识,我想学一些嵌入式专业的东西,但现在不知道学什么,困惑中,求帮助!希望能将的细致些!!! 展开
- 抱歉,我还是让你失望了。 (英文翻译)
- 求助化学专业翻译,谢谢
- Syntheses and properties of fluorinated phosphate acrylates used for UV-curing coatings The acrylated perfluoroalkyl phosphates (PFPA I and PFPA II) used as an oligomer and monomer, respectively, for UV-curing systems were synthesized... Syntheses and properties of fluorinated phosphate acrylates used for UV-curing coatings The acrylated perfluoroalkyl phosphates (PFPA I and PFPA II) used as an oligomer and monomer, respectively, for UV-curing systems were synthesized and characterized with 1H NMR and FTIR spectra. The photopolymerization behavior was investigated by using photo-DSC analysis, showing that both acrylates were photopolymerized quickly to a moderate final unsaturation conversion at the presence of a photoinitiator. The limiting oxygen indices of the UV-cured pure filmswere determined to be over 35. The surface properties of UV-cured polyurethane films added PFPAs, respectively, as additives were investigated by measuring the contact angles. The results showed that the addition of a small amount of PFPA I or PFPA II efficiently led to the increases in the contact angles, and the decreases in the surface tension. The X-ray photoelectron spectroscopy analysis confirmed that the film surface was enriched with fluorinated species. 展开
- PCB英文翻译
- 植物提取物 英文翻译
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- 纺织面料是一种纤维集合体,其机械力学性能的研究一直是纺织科学界的ZD,是评价织物品质的一个重要指标。织物在使用的过程中会遇到各式各样的破坏形式,其中拉伸,撕裂,顶破就是三... 纺织面料是一种纤维集合体,其机械力学性能的研究一直是纺织科学界的ZD,是评价织物品质的一个重要指标。织物在使用的过程中会遇到各式各样的破坏形式,其中拉伸,撕裂,顶破就是三种常见的破坏。为了提高织物的使用寿命,所以对织物的机械力学性能的研究就很有意义了。到目前为止,国内外已有好多学者都对此进行过研究,包括针织物,机织物,非织造土工布等等。本论文工作的主要内容是对十块机织物的拉伸,撕裂,顶破性能的测试分析。通过扯边纱法对织物的拉伸性能进行了测试研究;采用落锤法对织物的撕裂性能进行了测试研究,采用钢球法对织物的顶破性能进行了测试研究。在测试织物的拉伸,撕裂和顶破性能的同时也对织物的结构参数进行了测试,包括织物的厚度,织物中纱线的细度,经纬纱密度等等。通过这些测试和对数据的具体分析,得出了织物的拉伸,撕裂,顶破三者之间的关系。 展开
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