帮忙翻译下化工的英语。。用在线词典翻译部正确

叫我为王亅 2010-06-01 05:49:52 613 浏览

A reversed-phase ion-pairing high-performance liquid chromatography (RP-HPIPC) method for the separation of a complex mixture of heparin-derived oligosacchrides has been developed by a stepwise optimization of the mobile phase， in which the... A reversed-phase ion-pairing high-performance liquid chromatography (RP-HPIPC) method for the separation of a complex mixture of heparin-derived oligosacchrides has been developed by a stepwise optimization of the mobile phase， in which the concentration of ion-pairing reagent， mobile phase pH， and acetonitrile concentration were varied. The resolution of more than 30 oligosaccharide components was obtained， under optimized conditions， in an analysis time of less than 30 min. This represents the first RP-HPLC method that can separate a complex mixture of both small and large sulfated oligosaccharides in a single chromatographic step. The heparin-derived oligosaccharides， in this mixture， can also be separated under a second set of RP-HPIPC conditions using a volatile ion-pairing reagent， tributylammonium acetate， to aid in the recovery of individual sulfated oligosaccharides. Moreover， it was possible to replace sodium chloride gradient， required for eluting highly sulfated oligosaccharides， with a fixed， low concentration of a volatile salt， ammonium acetate， by utilizing an acetonitrile gradient. This solvent system might make it possible to directly interface this RP-HPIPC separation with mass spectral analysis. 2003 Elsevier B.V. All rights reserved. Keywords: Ion-pairing reagents; Gradient elution; Oligosaccharides 展开

参与评论

登录后参与评论

全部评论(4条)

妖樱鬼蝶_棷 2010-06-10 00:00:00

爸爸爸爸爸爸爸爸爸爸爸爸不

赞(3)

回复(0)

评论

评论
登录后参与评论
vvv1236541 2010-06-02 00:00:00

阿反相离子对GX液相色谱法（RP - HPIPC）为一肝素衍生的寡糖复杂的混合物分离方法开发了一个流动相逐步优化，其中的离子浓度配对试剂，流动相pH值，乙腈浓度变化。该决议超过30寡糖成分，得到优化的下不到30分钟的分析时间条件。这是首次反相GX液相色谱法，可以在一个单一的色谱分离步骤的小型和大型硫酸寡糖的复杂混合物。肝素寡糖，在这种混合物，也可以下一个反相HPIPC条件的第二套分开使用挥发性离子对试剂，tributylammonium醋酸，以协助个别硫酸寡糖复苏。此外，有可能取代氯化钠梯度，需要洗脱高度硫酸寡糖，与一个固定的动荡盐，低浓度醋酸铵，利用一乙腈梯度。这种溶剂系统，因此可能直接接口这个质谱分析反相HPIPC分离。 2003埃尔塞维尔B.诉保留所有权利。关键词：离子配对试剂;梯度洗脱;寡糖

赞(16)

回复(0)

评论

评论
登录后参与评论
庄头河吧 2010-06-02 00:00:00

阿反相离子对GX液相色谱法（RP - HPIPC）为一肝素衍生的寡糖复杂的混合物分离方法开发了一个流动相逐步优化，其中的离子浓度配对试剂，流动相pH值，乙腈浓度变化，决议的组件超过30低聚糖，得到优化的30分钟条件下，小于1的分析时间。这是diyi个反相GX液相色谱法，可以在一个单一的色谱分离步骤的小型和大型硫酸寡糖的复杂混合物。肝素寡糖，在这种混合物，也可以分离的条件下，HPIPC 1第二套的RP使用挥发性离子对试剂，tributylammonium醋酸，以帮助恢复个人的低聚糖硫酸。此外，有可能取代氯化钠梯度洗脱需要高度低聚糖硫酸，有固定，醋酸铵低浓度的挥发性盐，利用一乙腈梯度.这种溶剂系统，因此可能直接接口这个质谱分析反相HPIPC分离。2003埃尔塞维尔BV公司版权所有。关键词：离子配对试剂;梯度洗脱;寡糖

赞(16)

回复(0)

评论

评论
登录后参与评论
笨猪工作室 2010-06-02 00:00:00

阿反相离子对GX液相色谱法（RP - HPIPC）为一肝素衍生的寡糖复杂的混合物分离方法开发了一个流动相逐步优化，其中的离子浓度配对试剂，流动相pH值，乙腈浓度变化。 The resolution该决议 of more than 30 oligosaccharide components was obtained， under optimized conditions， in an analysis time of less than 30 min.超过30寡糖成分，得到优化的下不到30分钟的分析时间条件。 This represents the first RP-HPLC method that can separate a complex mixture of both small and large sulfated oligosaccharides in a single chromatographic step.这是首次反相GX液相色谱法，可以在一个单一的色谱分离步骤的小型和大型硫酸寡糖的复杂混合物。 The heparin-derived oligosaccharides， in this mixture， can also be肝素寡糖，在这种混合物，也可以 separated under a second set of RP-HPIPC conditions using a volatile ion-pairing reagent， tributylammonium acetate， to aid in the recovery of individual sulfated oligosaccharides.下一个反相HPIPC条件的第二套分开使用挥发性离子对试剂，tributylammonium醋酸，以协助个别硫酸寡糖复苏。 Moreover， it was possible to replace sodium chloride gradient，此外，有可能取代氯化钠梯度， required for eluting highly sulfated oligosaccharides， with a fixed， low concentration of a volatile salt， ammonium acetate， by utilizing an acetonitrile gradient.需要洗脱高度硫酸寡糖，与一个固定的动荡盐，低浓度醋酸铵，利用一乙腈梯度。 This solvent system might make it possible to directly interface this RP-HPIPC separation with mass spectral analysis.这种溶剂系统，因此可能直接接口这个质谱分析反相HPIPC分离。 2003 Elsevier BV All rights reserved. 2003埃尔塞维尔BV公司版权所有。 Keywords: Ion-pairing reagents; Gradient elution; Oligosaccharides关键词：离子配对试剂;梯度洗脱;寡糖

赞(17)

回复(0)

评论

评论
登录后参与评论

热门问答

帮忙翻译下化工的英语。。用在线词典翻译部正确: A reversed-phase ion-pairing high-performance liquid chromatography (RP-HPIPC) method for the separation of a complex mixture of heparin-derived oligosacchrides has been developed by a stepwise optimization of the mobile phase， in which the... A reversed-phase ion-pairing high-performance liquid chromatography (RP-HPIPC) method for the separation of a complex mixture of heparin-derived oligosacchrides has been developed by a stepwise optimization of the mobile phase， in which the concentration of ion-pairing reagent， mobile phase pH， and acetonitrile concentration were varied. The resolution of more than 30 oligosaccharide components was obtained， under optimized conditions， in an analysis time of less than 30 min. This represents the first RP-HPLC method that can separate a complex mixture of both small and large sulfated oligosaccharides in a single chromatographic step. The heparin-derived oligosaccharides， in this mixture， can also be separated under a second set of RP-HPIPC conditions using a volatile ion-pairing reagent， tributylammonium acetate， to aid in the recovery of individual sulfated oligosaccharides. Moreover， it was possible to replace sodium chloride gradient， required for eluting highly sulfated oligosaccharides， with a fixed， low concentration of a volatile salt， ammonium acetate， by utilizing an acetonitrile gradient. This solvent system might make it possible to directly interface this RP-HPIPC separation with mass spectral analysis. 2003 Elsevier B.V. All rights reserved. Keywords: Ion-pairing reagents; Gradient elution; Oligosaccharides 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

帮忙翻译一下化工方面的单词英语: 碱值测定器试剂移液管锥形瓶酸式滴定管甲基黄溴甲酚绿混合指示剂盐酸标准溶液摩尔/升酸式滴定管... 碱值测定器试剂移液管锥形瓶酸式滴定管甲基黄溴甲酚绿混合指示剂盐酸标准溶液摩尔/升酸式滴定管展开

求助：帮忙帮忙，机械英语NB的帮忙翻译下: The effect of beam diameter on the electron skirt in a high pressure scanning electron microscope R. Belkorissata， A. Kadouna， B. Khelifab， C. Mathieub，* aLaboratoire d’Elaboration et de Caracte´risation des Mate´riaux， Univ... The effect of beam diameter on the electron skirt in a high pressure scanning electron microscope R. Belkorissata， A. Kadouna， B. Khelifab， C. Mathieub，* aLaboratoire d’Elaboration et de Caracte´risation des Mate´riaux， Universite´ Djilali Liabe`s de Sidi Bel-Abbes， BP 89， 22000 Sidi Bel-Abbe`s， Algeria bCentre de Calcul et de Mode´lisation de Lens， University D’Artois， Faculte´ Jean Perrin， SP 18 Rue Jean Souvraz， 62307 Lens cedex， France Received 9 February 2004; accepted 19 March 2004 Abstract Helium gas and air are commonly used in the high pressure scanning electron microscope (HPSEM). The presence of a gaseous environment in the specimen chamber modifies the electron beam profile. In order to fully understand the beam-gas interaction， we have investigated the beam-diameter effect for two gases (helium and air) by Monte Carlo simulation. In this calculation， we have assumed that the electron beam is Gaussian and we have explored the influence of the nature of the gas at low voltage. When the beam diameter varies between 1 and 100 nm， there is no influence on the beam profile for these two gases. The resolving power of the HPSEM is not affected by the beamgas interaction. These theoretical results have been compared with experimental images obtained at low voltage under air and helium gases. The variation of image quality at low voltage has confirmed the interest of helium for use in a Field Emission Gun SEM (FEGSEM) in high pressure (or low vacuum) conditions. q 2004 Elsevier Ltd. All rights reserved. Keywords: High pressure scanning electron microscope; Monte Carlo; Electron scattering; Electron profile; Skirting 展开

帮忙翻译一段英语: Plant material and culture conditions have been described (7). Briefly， a diploid tissue culture line， WOO1C， of wild carrot， Daucus carota L.， was maintained in Murashige and Skoog medium supplemented with 0.1 mg of 2，4-dichlorophenoxy... Plant material and culture conditions have been described (7). Briefly， a diploid tissue culture line， WOO1C， of wild carrot， Daucus carota L.， was maintained in Murashige and Skoog medium supplemented with 0.1 mg of 2，4-dichlorophenoxyacetic acid (2，4-D). To regenerate plants from the culture， callus tissue was transferred to the same medium devoid of 2，4-D (embryogenic medium). All experiments were performed with cultures grown in liquid medium. For convenience， cultures grown in 2，4-D-containing medium are referred to as "callus cultures"， and those grown in medium without 2，4-D as "embryo cultures." The growth of callus cultures was measured by the sidearmturbidity method (7). The number of cells at any time point of growth was estimated from turbidity in a Klett-Summerson calorimeter and was expressed in arbitrary units. For example， Klett 100 corresponds to ="2 X 106 cells per ml. The relationship is linear up to Klett 150 in our Klett-Summerson colorimeter. Suspension cultures ofWOOLC cell line are normally maintained at cell densities between 106 and 107 cells per ml in 0.1 mg of 2，4-D per liter (high-density culture) in shake flasks. During a quantitative study on embryogenesis， we found that maximal embryo production can be achieved by first incubating the culture at high density in medium without 2，4-D for one generation time and then diluting it to 2-3 x 104 cells per ml (low-density culture). To compare cultures of comparable density， callus cultures and embryo cultures were subjected to the same procedure. To initiate low-density embryo or callus cultures， an 8-day-old high-density culture grown at the logarithmic phase was washed three times with fresh callus or embryogenic medium and resuspended at 8 x 105 cells per ml for one generation (3 days) in its corresponding medium. It was then diluted to 2 x 104 cells per ml; 20 ml of the culture was incubated in a plastic Petri dish (9 cm in diameter) at 240C. The morphogenetic events of the cultures were examined and photographed under a dissecting microscope. 请不要用google的那个，我看不懂~~ 展开

英语高手帮忙翻译一下: ThequalitysystemofthecompanyisinconformitywithISO9002.Makingcomprehensiveuseofbiotechnology，thecompanyspecializesinmanufacturingandsellingC-4seriesorganicacidsandchiralpr... The quality system of the company is in conformity with ISO 9002 . Making comprehensive use ofbiotechnology， the company specializes in manufacturing and selling C-4series organic acids and chiral products. These products are widely used in many fields such as food， phamaceutical and chemical industries， and are well accepted by the overseas markets. The man products are L-Malic acid ， DL-Malic acid， L(+)-Tartaric acid ， Fumaric acid， Maleic acid and other organic acids. Annual productivity amounts to 20，000 tones. The company has become an important manufacturer of C-4 series organic acids in the world . All the products of the company have respectively met the different international aadvanced standards such as Food chemicals Codex， U.S. Pharmacopoeia ，British Pharmacopoeia and the products have obtained Star-K Kosher certificate. Above 70% of the Companys products are exported to Japan， Europe， Australias， the United states and middle East ， and they are renown and well recognized in the international markets. The company will devote itself to research and development of enzyme technology and organic electrochemistry. It will continuously introduce new food additives， chiral pharmaceutical intermediates， chiral auxiliaries and chiral drugs. Depending on superior quality， good service and high reputation， the company is willing to establish a long-term mutually beneficial business partnership with overseas customers and continue contribute to the happy life of humans. 展开

求专业的英语达人帮忙翻译下万分感谢: Caution:Do not place your finger over the vent(it pressurizes the sensor) to test the flow indicator when gas is flowing to the sensor.removing your finger (the restriction) generates a vacuum on the sensor and maydamage the sensor(voiding ... Caution:Do not place your finger over the vent(it pressurizes the sensor) to test the flow indicator when gas is flowing to the sensor.removing your finger (the restriction) generates a vacuum on the sensor and maydamage the sensor(voiding the sensor warraty). Positive pressure applications: If the sample pressure is greater than 30 psign an external pressure regulator(optional) is required upsteram of the analyzer to control of sample flow.a pressure regulator with a metallic diaphragm is recommended to prevent high oxygen reading that cuold result from the use of diaphragms constructed of more gas permeable materisls. If other optionoal sample system components such as coiled metal tubing(samples must be colled to at least 35-40℃ for continuous use)，coalescing filters ，scrubbers，etc.are required install the pressure rugulator after the coiled tubing and bofore the other components and the analyzer.a scrubber requires a flow valve upstream for optimum efficiency and response time and that the analyzer flow valve is opened completely. Atmospheric or slightly negative pressure applications: For accurate high ppb and/or low ppm range measurements，an optional simple pump is required downstream of the analyzer to draw the sample through the analyzer.The cacuum drawn on the analyzer and sensor should not exceed 4”of water. Caution:Use ofpump downstream of the sensor requires the floe control valve upstream of the sensor be completely opened to avoid drawing ercessive vacuum in the sensor，which can damage the sensor. If pump over-loading(due to the limitation of low flow rate of the sample gas)is a comsideration，a second throttle valve on the pump’s inlet side may be necessary to provide a bypass path，as illustrated below，to prevent the pump from over-loading and over-heating while miantaining the required sample flow rate within the above-mentioned parameters 展开

帮忙翻译下专业日语！: 急用，谢谢！

麻烦哪位英语牛人帮忙翻译下~~药学的翻译成英语谢谢了: 目的制备足浴液并对其进行质量考察。方法采用正交试验优选苦参中苦参碱和紫草中紫草素的提取工艺，通过紫外分光光度法对苦参碱与紫草素的含量进行测定，并将苦参碱、紫草素、水杨酸、苯甲酸和硼酸按一定比例进行溶解实验。化学成分分析采用薄层色谱法及试管... 目的制备足浴液并对其进行质量考察。方法采用正交试验优选苦参中苦参碱和紫草中紫草素的提取工艺，通过紫外分光光度法对苦参碱与紫草素的含量进行测定，并将苦参碱、紫草素、水杨酸、苯甲酸和硼酸按一定比例进行溶解实验。化学成分分析采用薄层色谱法及试管实验法对苦参中苦参碱与紫草中紫草素进行化学成分检测。结果通过薄层色谱法和试管实验法得出苦参碱为生物碱、紫草素为蒽醌。通过正交试验和紫外分光光度法选出Z优提取方案。通过溶解实验使中化学药物形成混悬液，Z后得到足浴液样品。结论通过T浓度实验，溶解实验选用95%乙醇为溶媒。通过L9(33)正交实验确定Z佳提取工艺，即提取时间为30min，温度为60℃，乙醇浓度为60%，以苦参碱作对照品，用分光光度法测定其苦参碱得率3.07%。经过实验摸索，得到超声提取紫草工艺的Z佳条件，即乙醇浓度为70%，超声功率为400w，料液比为1：40时提取率较高。足浴液制备方法简便，有利于实际生产，降低能源、节约时间，有较大的开发利用价值和广泛的市场前景。关键字：紫草；苦参；正交设计；薄层色谱展开

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

请高手帮忙翻译~在线等！: 由于为系列产品，在性质上有类似处，在某些行业可以相互替代。乙烯胺主要用于表面活性剂，环氧树脂固化剂，农药原料，医药原料，洗涤助剂，聚酰胺树脂，造纸助剂，润滑油添加剂，水处理剂原料，染料固色剂，粘合剂原料等方面。我国乙二胺主要用于生产农药（... 由于为系列产品，在性质上有类似处，在某些行业可以相互替代。乙烯胺主要用于表面活性剂，环氧树脂固化剂，农药原料，医药原料，洗涤助剂，聚酰胺树脂，造纸助剂，润滑油添加剂，水处理剂原料，染料固色剂，粘合剂原料等方面。我国乙二胺主要用于生产农药（森锰锌、代森锌、代森胺及杀虫剂、除草剂、杀菌剂），表面活性剂（生成双硬脂酸酰胺，烷基咪唑啉、双酰胺，与环氧乙烷，环氧丙烷合成非离子表面活性剂），环氧树脂固化剂（聚酰胺树脂，环氧固化剂，羟乙基乙二胺等），洗涤助剂（乙二胺四乙酸及其钠盐系列螯合剂），医药原料（氨茶碱，洗必泰，鼻眼净，灭虫灵等），水处理剂（乙二胺四甲叉膦酸盐，乙脒基乙叉二膦酸），缓蚀剂（环脒聚合物）染料固色剂，照相材料定影液及润滑油添加剂等。其中农药，螯合剂，表面活性剂及环氧固化剂占用量的70%以上。 2000年全年乙二胺用量为11140吨，预计今年将达到14000吨。二乙烯三胺主要和环氧氯丙烷以及己二酸配套生产湿强剂——一种造纸助剂，主要作用是提高潮湿纸张的强度，以利于加工或使用；其他方面的用途软片（烷基咪唑啉，柔软剂），环氧固化剂，缓蚀剂、印染助剂，水处理剂（二乙烯三胺五甲叉膦酸），农药菌毒清等。三乙烯四胺主要用于用途有两方面，环氧固化剂（包括聚酰胺树脂）和无灰分散剂，其他方面用途包括沥青乳化剂，水处理，缓蚀剂，表面活性剂等。四乙烯五胺主要用于生产无灰分散剂，其他方面用途包括沥青乳化剂，破乳剂，环氧固化剂，离子交换树脂，助滤剂等。展开

有英语高手或者会labview的高手帮忙翻译下: LabVIEW就是基于虚拟仪器的开发环境，本文阐述了基于虚拟仪器技术在阻抗参数测量中的应用，根据电子测量的基本原理、计算方法和流程，利用了LabVIEW的特有语言—G语言—对被测对象进行... LabVIEW就是基于虚拟仪器的开发环境，本文阐述了基于虚拟仪器技术在阻抗参数测量中的应用，根据电子测量的基本原理、计算方法和流程，利用了LabVIEW的特有语言—G语言—对被测对象进行程序编译、运行、修改并Z终显示运行结果有高手帮忙翻译下展开

帮忙翻译: AttachingtheSampleChuckYouwillneeda#2Phillipsscrewdriverforthisstep.FollowingthedetailsshowninFig.2-4，installthesamplechuckbyfirstaligningthepinsonthebottomofthesamplechu... Attaching the Sample Chuck You will need a #2 Phillips screwdriver for this step. Following the details shown in Fig. 2-4， install the sample chuck by first aligning the pins on the bottom of the sample chuck with the receptacles on the alpha- SE base. Then tighten the upper two captive thumb screws. Next， use the Phillips screwdriver to tighten the lower two captive screws. Don’t over tighten the screws! It will make it difficult to remove them in the future; just ensure that the screws are snug. Finally， connect the vacuum line from the sample chuck to the vacuum fitting on the alpha-SE base. Releasing the Z-stage Shipping Lock To access the Z-stage shipping lock， first loosen the captive screw on the lamp/shipping lock access door， then open the access door by rotating 180°， as shown in Fig. 2-5. To release the Z-stage shipping lock， stand in front of the ellipsometer and use your left hand to balance the weight of the Z-stage (you will feel it lift up slightly). It will be difficult to release the shipping lock if you apply too much or not enough upward force. Next， use your right hand to move the shipping lock to the operating position (to the right， see Fig. 2-6). If the lock is hard to move， you can use a tool to gain more leverage. The shipping lock will move about 1/3” [8mm] to the right. Checking the Lamp Check that the QTH lamp in fully seated in the lamp housing. The lamp is located behind the actuator screw (see Fig. 2-6) and has two white wires protruding from the back of the lamp. Simply push down on the lamp ensuring that the lamp is fully seated in the lamp housing. Rotate the lamp/shipping lock access door to the closed position and hand tighten the captive screw. 拒绝翻译软件，翻译软件我自己也会用不是用翻译软件我就看不懂，只是，上来找人翻译就是希望翻译出比较容易看懂，不需要自己对照就可以看的说明书，如果用翻译软件，根本就词不达意，还是要自己对着原文件核实既然用了那么多积分，就希望有相当的成果，如果用翻译软件混积分，那就是人品问题了还有，某些人不要不懂乱说混积分展开

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

帮忙翻译一哈文章（翻译成英语）: 摘要本文采用环氧氯丙烷、乙二胺、对氨基苯磺酸等物质合成了一种新的活性染料耐氯水牢度提升剂，并对经多种类型活性染料染色的织物进行固色处理，再进行氯漂处理。经过对织物K/S值、Z大吸收波长λmax、摩擦牢度及皂洗牢度的分析，确定提升剂处理的Z佳工... 摘要本文采用环氧氯丙烷、乙二胺、对氨基苯磺酸等物质合成了一种新的活性染料耐氯水牢度提升剂，并对经多种类型活性染料染色的织物进行固色处理，再进行氯漂处理。经过对织物K/S值、Z大吸收波长λmax、摩擦牢度及皂洗牢度的分析，确定提升剂处理的Z佳工艺。实验表明:织物的K/S值有很大的提高，织物的耐氯牢度大致可提升2～3级，并且不会改变织物色光。但是提升剂对色织物的摩擦牢度和皂洗牢度影响不是很大。关键词：活性染料；耐氯色牢度；提升剂；染色工艺展开

英语高手帮忙翻译段英文谢谢！！: In this paper， the degradation of an azo dye Orange G (OG) on nitrogen-doped TiO2 photocatalysts has been investigated under visible light and sunlight irradiation. Under visible light irradiation， the doped TiO2 nanocatalysts demonstrated ... In this paper， the degradation of an azo dye Orange G (OG) on nitrogen-doped TiO2 photocatalysts has been investigated under visible light and sunlight irradiation. Under visible light irradiation， the doped TiO2 nanocatalysts demonstrated higher activity than the commercial Dugussa P25 TiO2， allowing more efﬁcient utilization of solar light， while under sunlight， P25 showed higher photocatalytic activity. According to the X-ray diffraction (XRD)， X-ray photoelectron spectroscopy (XPS) and UV–vis spectra analyses， it was found that both the nanosized anatase structure and the appearance of new absorption band in the visible region caused by nitrogen doping were responsible for the signiﬁcant enhancement of OG degradation under visible light. In addition， the photosensitized oxidation mechanism originated from OG itself was also considered contributing to the higher visible-light-induced degradation efﬁciency. The effect of the initial pH of the solution and the dosage of hydrogen peroxide under different light sources was also investigated. Under visible light and sunlight， the optimal solution pH was both 2.0， while the optimal dosage of H2O2 was 5.0 and 15.0 mmol/l， respectively. Azodyes， which are characterized by the presence of one or more azo bonds ( N N )， are among the most notorious widespread environmental pollutants associated with textile，cosmetic， food colorants， printing， and pharmaceutical indus-tries. Because of their non-degradability， toxicity， potential mutagenicity and carcinogenicity， wastewaters originating from these dyes production or application industries pose a major threat to the surrounding ecosystems and human beings’ health.[1–3].Environmental concerns and the need of meeting the strin-gent international standards for rejecting wastewaters has made the development of novel and cost-effective processes for the puriﬁcation of azo dyes efﬂuents an issue of major technological importance. 展开

帮忙翻译下十万火急!!!! 万分感谢！!!!!!!!!!: thequalitysystemofthecompanyisinconformitywithISO9002.markingcomprehensiveuseofbiotechnology，finechemicaltechnology，thecompanyspecializesinmanufacturingandsellingC-4serie... the quality system of the company is in conformity with ISO 9002 . marking comprehensive use of biotechnology，fine chemical technology，the company specializes in manufacturing and selling C-4 series organic acids and chiral products. these products are widely used in many field such as food， pharmaceutical and chemical industries， and are well accepted by the domestic and overseas market. the main products are L-Malic acid ，DL- Malic acid，L(+)-lartaric acid， fumaric acid， Maleic acid and other organic acids. annual productivity amounts to 20，000 tones. the company has become aninportant manufacturer of C-4 series organic acids in the world. all the products of the company have respectively met the different international advanced standards such as food chemicals codex U.S. pharmacopoeia ， british pharmacopoeia ，and the products have obtained Star-K Kosher Certificate. Above 70% of the company 's products are exported to Japan，Europe，Australia，the United States and Middle East， and they are renown and well recognized in the international markets. the company will devote itself to research and development of enzyme technology and organic electrochemistry. it will continuously introduce new food additives， chiral pharmaceutical intermediates，chiral auxiliaries and chiral drugs. depending on superior quality ， good service and high reputation ， the company is willing to establish a long -term mutually beneficial business partnership with overseas customers and continue to contribute to the happy life of humans. 展开

金相组织用英语怎么翻译？: 它是指金属的内部结构，急！THANKS... 它是指金属的内部结构，急！THANKS 展开

磁翻板液位计用英语怎么翻译？: 磁翻板液位计用英语怎么翻译？有没有专业一点的说法？

麻烦英文好的帮忙翻译下~~~~: 虚拟仪器技术与NI的优势及发展趋势展望摘要：本文介绍了虚拟仪器的概念及发展。从虚拟仪器的组成，NI的优势及21世纪发展趋势的展望进行了详细的介绍。... 虚拟仪器技术与NI的优势及发展趋势展望摘要：本文介绍了虚拟仪器的概念及发展。从虚拟仪器的组成，NI的优势及21世纪发展趋势的展望进行了详细的介绍。展开

仪器网（yiqi.com）欢迎您！

联系我们

关注我们