各位大神，麻烦帮小弟翻译，急，在线等。。。。论文，不要机器翻译的

夏天and热 2011-06-19 10:06:36 234 浏览

本文采用氧化还原法制备了具有较高增强因子的银溶胶，以该银溶胶为活性基底，研究了L-苯丙氨酸（L-Phe）的表面增强拉曼光谱（SERS）。同时分析了L-Phe在银溶胶中的吸附状态及其与银溶胶的相互作用。研究结果表明：（1）L-Phe分子中的羧基、芳环或杂环、氨基和... 本文采用氧化还原法制备了具有较高增强因子的银溶胶，以该银溶胶为活性基底，研究了L-苯丙氨酸（L-Phe）的表面增强拉曼光谱（SERS）。同时分析了L-Phe在银溶胶中的吸附状态及其与银溶胶的相互作用。研究结果表明：（1）L-Phe分子中的羧基、芳环或杂环、氨基和银溶胶发生了吸附作用，因而表现出表面增强拉曼效应；（2）与其常规拉曼光谱相比，SERS峰强和峰位均有一定变化；（3）L-Phe浓度为2×10-5~1×10-2mo1/L 范围，其SERS强度呈先增大后减小的变化趋势，当浓度为1×10-3mo1/L时的SERS强度Z大。本论文为了解氨基酸在银溶胶中的SERS增强机制与规律提供，为更深入的进行氨基酸乃至生物大分子的SERS奠定了基础展开

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FreedomByKira 2011-06-20 00:00:00

专业论文Z好是去相关的网站搜索。

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各位大神，麻烦帮小弟翻译，急，在线等。。。。论文，不要机器翻译的: 本文采用氧化还原法制备了具有较高增强因子的银溶胶，以该银溶胶为活性基底，研究了L-苯丙氨酸（L-Phe）的表面增强拉曼光谱（SERS）。同时分析了L-Phe在银溶胶中的吸附状态及其与银溶胶的相互作用。研究结果表明：（1）L-Phe分子中的羧基、芳环或杂环、氨基和... 本文采用氧化还原法制备了具有较高增强因子的银溶胶，以该银溶胶为活性基底，研究了L-苯丙氨酸（L-Phe）的表面增强拉曼光谱（SERS）。同时分析了L-Phe在银溶胶中的吸附状态及其与银溶胶的相互作用。研究结果表明：（1）L-Phe分子中的羧基、芳环或杂环、氨基和银溶胶发生了吸附作用，因而表现出表面增强拉曼效应；（2）与其常规拉曼光谱相比，SERS峰强和峰位均有一定变化；（3）L-Phe浓度为2×10-5~1×10-2mo1/L 范围，其SERS强度呈先增大后减小的变化趋势，当浓度为1×10-3mo1/L时的SERS强度Z大。本论文为了解氨基酸在银溶胶中的SERS增强机制与规律提供，为更深入的进行氨基酸乃至生物大分子的SERS奠定了基础展开

求翻译，不要机器翻: All cell lines were grown in RPMI-1640 medium (GIBCO) supplemented with 10% heat-inactivated bovine serum， 2 nM L-glutamine， 105 IU/liter penicillin G， 100 mg/liter streptomycin and 10 mM HEPES， pH 7.4. Cells were kept at 37°C in a humidif... All cell lines were grown in RPMI-1640 medium (GIBCO) supplemented with 10% heat-inactivated bovine serum， 2 nM L-glutamine， 105 IU/liter penicillin G， 100 mg/liter streptomycin and 10 mM HEPES， pH 7.4. Cells were kept at 37°C in a humidified 5% CO2 incubator. 展开

成绩单翻译在线等: 生物工艺实验1《分子生物学》课程论文《生物工艺学》教学实习基因工程原理生物工艺学1《微生物遗传学》课程论文生物工程综合教学实习生物工艺实验2生物反应器生物工艺学2生物工程综合... 生物工艺实验1 《分子生物学》课程论文《生物工艺学》教学实习基因工程原理生物工艺学1 《微生物遗传学》课程论文生物工程综合教学实习生物工艺实验2 生物反应器生物工艺学2 生物工程综合专业实践《生物反应器》课程设计生物工程实习模块2 展开

求求大哥大姐帮帮忙帮小弟翻译一下石油专业英语文章急急急！: An Ensemble Level Upscaling Approach for Efficient Estimation of Fine-Scale Production Statistics Using Coarse-Scale Simulations Yuguang Chen， SPE， Chevron Energy Technology Co.， and Louis J. Durlofsky， SPE， Stanford U. Copyright 2007， S... An Ensemble Level Upscaling Approach for Efficient Estimation of Fine-Scale Production Statistics Using Coarse-Scale Simulations Yuguang Chen， SPE， Chevron Energy Technology Co.， and Louis J. Durlofsky， SPE， Stanford U. Copyright 2007， Society of Petroleum Engineers This paper was prepared for presentation at the 2007 SPE Reservoir Simulation Symposium held in Houston， Texas， U.S.A.， 26–28 February 2007. This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper， as presented， have not been reviewed by the Society of Petroleum Engineers and are subject to correction by the author(s). The material， as presented， does not necessarily reflect any position of the Society of Petroleum Engineers， its officers， or members. Papers presented at SPE meetings are subject to publication review by Editorial Committees of the Society of Petroleum Engineers. Electronic reproduction， distribution， or storage of any part of this paper for commercial purposes without the written consent of the Society of Petroleum Engineers is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of where and by whom the paper was presented. Write Librarian， SPE， P.O 展开

请帮翻译: Boron nitride nanotubes， nanocapsules and nanocages were fabricated by arc-melting LaB6 and boronLaB6 powder compacts in a nitrogenargon gas atmosphere， which were determined by high-resolution electron microscopy and energy dispersive X... Boron nitride nanotubes， nanocapsules and nanocages were fabricated by arc-melting LaB6 and boronLaB6 powder compacts in a nitrogenargon gas atmosphere， which were determined by high-resolution electron microscopy and energy dispersive X-ray spectroscopy. The diameters of the boron nitride nanotubes， nanocapsules and nanocages were in the range of 10100 nm， 1030 nm and 80 nm， respectively. The present work indicates that La could be a good candidate as a catalyst to produce the boron nitride fullerene materials by changing the ratio of LaB6B. 2001 Elsevier Science B.V. All rights reserved. 展开

帮忙翻译化工文献在线等拒绝使用自动翻译: Nano-sized Beta zeolites， with a crystal size of 80–100 nm， were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acet... Nano-sized Beta zeolites， with a crystal size of 80–100 nm， were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acetic anhydride than theconventional zeolites of largeparticle size.The smallcrystalsize of nano-sized zeolitesmay bringon more accessible activesites and then enhance the catalytic activity. The exposed pore openings in nano-sized zeolites allow a fast desorption of heavy products from the catalyst and can then reduce the occupancy of active sites by the adsorption of products ，this can then alleviate the catalyst deactivation and improve the catalyst stability deactivation and improve the catalyst stability. 急用在线等拒绝用自动翻译因为这个谁都会如果有超级好用的自动在线翻译或软件也可以推荐展开

一个英语句子的翻译---在线等: it is no good crying over spilt milk. 覆水难收请直译这个句子。谢谢

高分求高手翻译，不要机械翻译: Bimetallic dendrimer-encapsulated nanoparticles(DENs)are important materials，because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts.This tutorial review fo... Bimetallic dendrimer-encapsulated nanoparticles(DENs)are important materials，because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts.This tutorial review focuses on the recent research advances in bimetallic DENs with respect to their synthesis，characterization，and applications as catalysts.Bimetallic DENs can be made mainly via three routes:co-complexation，sequential loading，and partial displacement.The research in bimetallic DENs has been significantly promoted by the advancement of characterization instruments.The performances of bimetallic DENs as homogeneous and heterogeneous catalysts in organic synthesis have been compared with both monometallic DENs and their physical mixtures.It is concluded that the synergistic electronic effect in bimetallic nanoparticles enhances their catalytic activities. 能翻译多少都可以的展开

求大神帮修改或者翻译一篇论文，化学的关于单分散纳米粒子的: 这是毕业要求的，我自己翻译了一下，太多的不通顺，被返回来了，有没有人可以帮我翻译一下的，给个图片看看吧太闹心了，如果不行，大家有什么好的办法可以翻译的可以介绍一下也行

急求英语达人帮忙翻译段文章，在线等谢谢: The incorporation of silicon from the quartz-made growth chamber， characteristic of NIRIM-type reactor is insignificant in our samples， if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here)， wh... The incorporation of silicon from the quartz-made growth chamber， characteristic of NIRIM-type reactor is insignificant in our samples， if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here)， which supports the good quality of these films. The improvement of the crystalline quality of {111} films is explained by the weak ion bombardment of the sample during its growth outside the plasma ball. Raman measurements (not shown in this work) have also confirmed the high crystalline quality of our films， in particular in the low doping range. Very high boron concentrations (up to 5×1021 cm−3) have been reached at this growth position， outside the plasma ball. 展开

在线急等一种传感器论文: 小弟急求传感器论文一篇！·在线等啊！·真心求！·压力传感器；湿度传感器等等一切的传感器任选一种只要一份就可以了3000字差不多如果有开题报告那我就烧香拜佛了:-)我现在慌的都快哭... 小弟急求传感器论文一篇！·在线等啊！·真心求！· 压力传感器；湿度传感器等等一切的传感器任选一种只要一份就可以了 3000字差不多如果有开题报告那我就烧香拜佛了:-) 我现在慌的都快哭了 (:- …… 小弟邮箱 shuaiqiaojun@163.com 真心祈祷展开

翻译段文献麻烦: Eventhoughfluorescentprobesforcopperionhavebeenextensivelyexploredowingtobiologicalsignificanceofthismetalion，4therearestillonlyafewexamplesof“off-on”typesensorsavailab... Even though fluorescent probes for copper ion have been extensively explored owing to biological significance of this metal ion，4 there are still only a few examples of “off-on” type sensors available in aqueous systems.5 Furthermore， only a few ratiometric fluorescent probes for Cu2+ have been found in the literature due the fluorescence quenching nature of paramagnetic Cu2+，6 and most of them were working only in pure organic solvents. Ratiometric fluorescent measurements observe changes in the ratio of the intensities of the emission at two wavelengths. Thus， ratiometric fluorescent sensors have an important feature that they can be used to evaluate the analyte concentration and provide built-in correction for environmental effects. On the other hand， rhodamine derivatives are nonfluorescent and colorless， whereas ring-opening of the corresponding spirolactam gives rise to strong fluorescence emission and a pink color. Recently， a spirolactam (nonfluorescent) to ringopened amide (fluorescent) process was utilized for the detection of metal ions.5a，b，d，e，7 We introduced rhodamine fluorophore onto the pyrene moiety， which was utilized as a selective fluorescent and colorimetric sensor for Cu2+ in aqueous solution. Among the various metal ions， the chemosensor PRC displayed highly selective ratiometric changes upon the addition of Cu2+. As expected， the pyrene moiety served successfully as a source of these ratiometric changes. As far as we are aware， PRC is the first ratiometric sensor based on rhodamine derivative. For comparison， pyrene-based compound P4 was synthesized to test the fluorescence change with Cu2+. 展开

论文翻译，急啊，就这么多分了啊: Characterization. X-ray powder diffraction (XRD) pattern of the products was recorded on a Rigaku (Japan) D/max-çA X-ray diffractometer equipped with graphite monochromatized Cu KR radiation (ì ) 1.54178 Å). The transmissio... Characterization. X-ray powder diffraction (XRD) pattern of the products was recorded on a Rigaku (Japan) D/max-çA X-ray diffractometer equipped with graphite monochromatized Cu KR radiation (ì ) 1.54178 Å). The transmission electron microscopy (TEM) images and selected-area electron diffraction (SAED) patterns were captured on a Hitachi model H-800 instrument at an accelerating voltage of 200 kV. High-resolution transmission electron microscopy (HRTEM) images and SAED patterns were obtained on JEOL-2010 transmission electron microscope at an accelerating voltage of 200 kV. The Raman spectrum was recorded with a LABRAM-HR confocal Laser MicroRaman spectrometer with 514.5 nm radiation from an argon laser at room temperature. X-ray photoelectron spectra (XPS) were obtained from an ESCALAB MK II X-ray photoelectron spectrometer by using nonmonochromatized Mg Kα X-ray as the excitation source with an overall energy resolution of 1.0 eV. 展开

帮忙翻译论文摘要: 换热器是化工、炼油、动力、食品、轻工等许多工业部门广泛应用的一种通用设备。其性能的好坏直接影响过程工业热经济性的高低。近年来，由于能源危机，强化传热技术和新型换热器的研究... 换热器是化工、炼油、动力、食品、轻工等许多工业部门广泛应用的一种通用设备。其性能的好坏直接影响过程工业热经济性的高低。近年来，由于能源危机，强化传热技术和新型换热器的研究得了飞速发展。本次的实验是在前人设计的带螺旋折流片（下简称螺旋片）换热器的基础上再在内圆管多加上扰流柱，分析不同操作参数和结构参数条件下流体传热情况，由此得出影响换热器传热性能的条件，为进一步研究静态混合器传热情况和其在实际工程及设计中的应用奠定基础。本文对换热器进行了研究，测得壳程空气进出口温度，利用温差传热，以努塞尔准数作为衡量换热器传热性能的标准，分别考察了雷诺数对努塞尔准数的影响，并与空管进行了比较。换热器器中由于扰流柱的作用，使进入管中的流体在流经扰流柱时产生旋涡，有效地消除了径向主流道的速度梯度和温度梯度。因传热边界层大大减薄，使得边界层内流体不断得到更新，热阻下降，传热过程得到强化。通过实验可以得出一些结论: 由于有螺旋片同扰流柱的存在使得扰动螺旋型换热器的传热效果明显要优于圆滑管型换热器同螺旋型换热器;螺旋片使流体具有向外甩开的离心力，流体在流过扰流柱时因被分流、切割、再生，不仅加速了流速并且在柱后形成涡流，加速壁面流体的更新，减薄粘性边界层底层的厚度，从而提高了传热性能; 同一模型在不同Re下，随着Re的增加，Nu也随着增加，在不计阻力时，模型的传热效果随着Re的增加而提高不要在线翻译的。希望帮一忙！如果好再加100分，我现在非常急，马上就要交了。展开

帮忙翻译论文摘要: 换热器是化工、炼油、动力、食品、轻工等许多工业部门广泛应用的一种通用设备。其性能的好坏直接影响过程工业热经济性的高低。近年来，由于能源危机，强化传热技术和新型换热器的研究... 换热器是化工、炼油、动力、食品、轻工等许多工业部门广泛应用的一种通用设备。其性能的好坏直接影响过程工业热经济性的高低。近年来，由于能源危机，强化传热技术和新型换热器的研究得了飞速发展。本次的实验是在前人设计的带螺旋折流片（下简称螺旋片）换热器的基础上再在内圆管多加上扰流柱，分析不同操作参数和结构参数条件下流体传热情况，由此得出影响换热器传热性能的条件，为进一步研究静态混合器传热情况和其在实际工程及设计中的应用奠定基础。本文对换热器进行了研究，测得壳程空气进出口温度，利用温差传热，以努塞尔准数作为衡量换热器传热性能的标准，分别考察了雷诺数对努塞尔准数的影响，并与空管进行了比较。换热器器中由于扰流柱的作用，使进入管中的流体在流经扰流柱时产生旋涡，有效地消除了径向主流道的速度梯度和温度梯度。因传热边界层大大减薄，使得边界层内流体不断得到更新，热阻下降，传热过程得到强化。通过实验可以得出一些结论: 由于有螺旋片同扰流柱的存在使得扰动螺旋型换热器的传热效果明显要优于圆滑管型换热器同螺旋型换热器;螺旋片使流体具有向外甩开的离心力，流体在流过扰流柱时因被分流、切割、再生，不仅加速了流速并且在柱后形成涡流，加速壁面流体的更新，减薄粘性边界层底层的厚度，从而提高了传热性能; 同一模型在不同Re下，随着Re的增加，Nu也随着增加，在不计阻力时，模型的传热效果随着Re的增加而提高不要翻译软件翻译的。如果好再加分展开

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