麻煩哪位英語牛人幫忙翻譯下~~藥學的 翻譯成英語 謝謝了
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目的 制備足浴液并對其進行質量考察。方法 采用正交試驗優(yōu)選苦參中苦參堿和紫草中紫草素的提取工藝，通過紫外分光光度法對苦參堿與紫草素的含量進行測定，并將苦參堿、紫草素、水楊酸、苯甲酸和硼酸按一定比例進行溶解實驗?；瘜W成分分析采用薄層色譜法及試管... 目的 制備足浴液并對其進行質量考察。方法 采用正交試驗優(yōu)選苦參中苦參堿和紫草中紫草素的提取工藝，通過紫外分光光度法對苦參堿與紫草素的含量進行測定，并將苦參堿、紫草素、水楊酸、苯甲酸和硼酸按一定比例進行溶解實驗?；瘜W成分分析采用薄層色譜法及試管實驗法對苦參中苦參堿與紫草中紫草素進行化學成分檢測。結果 通過薄層色譜法和試管實驗法得出苦參堿為生物堿、紫草素為蒽醌。通過正交試驗和紫外分光光度法選出Z優(yōu)提取方案。通過溶解實驗使中化學藥物形成混懸液，Z后得到足浴液樣品。結論 通過T濃度實驗，溶解實驗選用95%乙醇為溶媒。通過L9(33)正交實驗確定Z佳提取工藝，即提取時間為30min，溫度為60℃，乙醇濃度為60%，以苦參堿作對照品，用分光光度法測定其苦參堿得率3.07%。經過實驗摸索，得到超聲提取紫草工藝的Z佳條件，即乙醇濃度為70%，超聲功率為400w，料液比為1：40時提取率較高。足浴液制備方法簡便，有利于實際生產，降低能源、節(jié)約時間，有較大的開發(fā)利用價值和廣泛的市場前景。 關鍵字：紫草；苦參；正交設計；薄層色譜 展開
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- elephantcule 2008-06-08 00:00:00
- Now ，preparation enough to shower and their quality inspection. Methods orthogonal test and optimization of Matrine Kushen Shikonin shikonin in the extraction process， through UV spectrophotometry of matrine and shikonin to determine the content and matrine， Shikonin Su， salicylic acid， benzoic acid and boric acid dissolved by a certain percentage to experiment. Chemical composition analysis by TLC and test-tube experiments in the Kushen Matrine and Shikonin shikonin in the chemical composition testing. Results TLC and test-tube experiments that matrine for alkaloids， shikonin for anthraquinone. By orthogonal testing and optimal UV spectrophotometry elected from the programme. Through the dissolution of the prescription drug in the form of suspension， enough to shower the end of samples. Conclusion T concentration of dissolved choice of 95 percent ethanol as solvent. Through L9 (33) orthogonal experiment to determine the optimal extraction process， that is， from time to 30 min， the temperature was 60 ℃， alcohol concentration of 60 percent， to matrine for reference substance， with its Determination in the matrine Rate of 3.07 percent. After experimental exploration， extraction by ultrasound Shikonin the best of conditions， namely the concentration of 70 percent ethanol， ultrasonic power for 400 w， feed than for the higher rate of extraction at 1:40. Preparation is simple enough to shower， to actual production， reduce energy and save time， have greater value and the development and utilization of broad market prospects. Keyword: Shikonin; Kushen; orthogonal design; TLC
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- 麻煩哪位英語牛人幫忙翻譯下~~藥學的 翻譯成英語 謝謝了
- 目的 制備足浴液并對其進行質量考察。方法 采用正交試驗優(yōu)選苦參中苦參堿和紫草中紫草素的提取工藝，通過紫外分光光度法對苦參堿與紫草素的含量進行測定，并將苦參堿、紫草素、水楊酸、苯甲酸和硼酸按一定比例進行溶解實驗?；瘜W成分分析采用薄層色譜法及試管... 目的 制備足浴液并對其進行質量考察。方法 采用正交試驗優(yōu)選苦參中苦參堿和紫草中紫草素的提取工藝，通過紫外分光光度法對苦參堿與紫草素的含量進行測定，并將苦參堿、紫草素、水楊酸、苯甲酸和硼酸按一定比例進行溶解實驗。化學成分分析采用薄層色譜法及試管實驗法對苦參中苦參堿與紫草中紫草素進行化學成分檢測。結果 通過薄層色譜法和試管實驗法得出苦參堿為生物堿、紫草素為蒽醌。通過正交試驗和紫外分光光度法選出Z優(yōu)提取方案。通過溶解實驗使中化學藥物形成混懸液，Z后得到足浴液樣品。結論 通過T濃度實驗，溶解實驗選用95%乙醇為溶媒。通過L9(33)正交實驗確定Z佳提取工藝，即提取時間為30min，溫度為60℃，乙醇濃度為60%，以苦參堿作對照品，用分光光度法測定其苦參堿得率3.07%。經過實驗摸索，得到超聲提取紫草工藝的Z佳條件，即乙醇濃度為70%，超聲功率為400w，料液比為1：40時提取率較高。足浴液制備方法簡便，有利于實際生產，降低能源、節(jié)約時間，有較大的開發(fā)利用價值和廣泛的市場前景。 關鍵字：紫草；苦參；正交設計；薄層色譜 展開
2008-06-07 10:30:31
591
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- 幫忙翻譯成英語
- 1.掌握量熱裝置的基本組合及電熱補償法測定熱效應的基本原理2.用電熱補償法測定KNO3或KCL在不同濃度水溶液中的積分溶解熱3.用作圖法求KNO3或KCL在水中的微分沖淡，積分沖淡熱和微分溶... 1.掌握量熱裝置的基本組合及電熱補償法測定熱效應的基本原理 2.用電熱補償法測定KNO3或KCL在不同濃度水溶液中的積分溶解熱 3.用作圖法求KNO3或KCL在水中的微分沖淡，積分沖淡熱和微分溶解熱 還有：1。測定蔗糖轉化的反應速率常數和半衰期 2.掌握旋光儀的使用方法 不要用翻譯網站翻啊······麻煩各位了 展開
2008-03-29 00:43:16
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- 幫忙翻譯一哈文章（翻譯成英語）
- 摘 要 本文采用環(huán)氧氯丙烷、乙二胺、對氨基苯磺酸等物質合成了一種新的活性染料耐氯水牢度提升劑，并對經多種類型活性染料染色的織物進行固色處理，再進行氯漂處理。經過對織物K/S值、Z大吸收波長λmax、摩擦牢度及皂洗牢度的分析，確定提升劑處理的Z佳工... 摘 要 本文采用環(huán)氧氯丙烷、乙二胺、對氨基苯磺酸等物質合成了一種新的活性染料耐氯水牢度提升劑，并對經多種類型活性染料染色的織物進行固色處理，再進行氯漂處理。經過對織物K/S值、Z大吸收波長λmax、摩擦牢度及皂洗牢度的分析，確定提升劑處理的Z佳工藝。實驗表明:織物的K/S值有很大的提高，織物的耐氯牢度大致可提升2～3級，并且不會改變織物色光。但是提升劑對色織物的摩擦牢度和皂洗牢度影響不是很大。 關鍵詞：活性染料；耐氯色牢度；提升劑；染色工藝 展開
2008-05-28 14:59:35
501
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- 求助：幫忙幫忙，機械英語NB的幫忙翻譯下
- 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 展開
2018-11-27 12:36:26
467
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- 幫忙翻譯一段英語
- 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. 請不要用google的那個，我看不懂~~ 展開
2008-02-19 03:32:04
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- 英語高手幫忙翻譯一下
- 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. 展開
2009-09-17 10:19:02
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- 哪位英語高手幫幫忙，翻譯英語文章！謝謝1
- 英語高手，謝謝了！ThecatalystsupportwasimpregnatedwithacetonesolutionofRuCl3.nH2Ouptorutheniumcontentof4w%，understirringfor6h.Afterconcentrationinarotaryevaporator，theobt... 英語高手，謝謝了！ The catalyst support was impregnated with acetone solution of RuCl3.nH2O up to ruthenium content of 4 w%， under stirring for 6 h. After concentration in a rotary evaporator， the obtained material was dried in air at 383 K overnight and subjected to preliminary reduction with a 1N2/3H2 stream at 698 K， and then cooled in 1N2/3H2 atmosphere. The potassium promoter was introduced by incipient wet impregnation with KNO3 solution at room temperature with molar ratio of K+ /Ru = 5/1. After stirring for 6 h and infusing for 24 h， the samples were dried in a rotary evaporator at 343K and then dried in the air at 383K for 12 h. The ammonia synthesis activities of the catalysts with about 35-60 meshes were evaluated by 1N2/3H2 flow of 2100 mL/h at 0.2 MPa from 623 K to 773 K. The amount of effluent ammonia was determined by titration method. As we can see from the Table 1， under the same reaction conditions， the catalyst K-Ru/Mg(Al)O exhibited the highest activity， 38.42 mL NH3?h-1?g-1 at 673K， 3 times more active than K-Ru/MgO， 12.88 mL NH3?h-1?g-1 at 748K. This means that selection of supports takes great effects on the activity of catalysts. The ammonia synthesis activity of different supports are K-Ru/Mg(Al)O > K-Ru/Mg-Al-Ca(1) > K-Ru/Mg-Al-Ca(2) > K-Ru/Al2O3 > K-Ru/CaO > K-Ru/MgO. The combinatorial supports showed higher activity than single supports. However， the sequence of temperature corresponding to the highest activity is just opposite to that of the activity. The optimal temperature for K-Ru/Mg(Al)O， 673K， is the lowest of all， on the contrary， that of K-Ru/MgO is the highest， 748K. The Mg(Al)O has a larger surface area of 140.95 m2?g-1 ， similar to γ-Al2O3， 110-180 m2?g-1 . The other two combinational supports have little surface areas but higher activities than Al2O3. It suggested that the activity of the catalyst is influenced not only by the dispersion of Ru crystals but also by the crystal structure of the supports. Table 1 Ammonia synthesis activities and BET surface areas Catalyst Optimal activity Highest activity Surface area of support temperature(K) (NH3/mL?h-1?g-1) (m2?g-1) K-Ru/MgO 748 12.88 K-Ru/Al2O3 698 23.79 K-Ru/CaO 723 23.22 K-Ru/Mg(Al)O 673 38.42 140.95 K-Ru/Mg-Al-Ca(1) 698 30.75 29.10 K-Ru/Mg-Al-Ca(2) 698 26.12 14.69 Acknowledgments This work was supported by the NNSF of China (20273053， 20023001 and 29933040)， the 973 Programming (001CB108906) and the NSF of Fujian province (E0310001). References 1. C. J. H. Jacobsen， S. Dahl， P. L. Hansen et al.， J. Mol. Catal. A， 2000， 163， 19. 2. F. Cavani， F. Trifiro， A. Vaccari， Catal. Today， 1991， 11， 173. 展開
2018-11-14 18:00:49
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- 喝牛奶翻譯成英語
2018-12-17 07:11:14
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- 幫忙翻譯下化工的英語。。用在線詞典翻譯部正確
- 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 展開
2010-06-01 05:49:52
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- 求專業(yè)的英語達人幫忙翻譯下 萬分感謝
- 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 展開
2010-05-07 12:23:38
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- 有英語高手或者會labview的高手幫忙翻譯下
- LabVIEW就是基于虛擬儀器的開發(fā)環(huán)境，本文闡述了基于虛擬儀器技術在阻抗參數測量中的應用，根據電子測量的基本原理、計算方法和流程，利用了LabVIEW的特有語言—G語言—對被測對象進行... LabVIEW就是基于虛擬儀器的開發(fā)環(huán)境，本文闡述了基于虛擬儀器技術在阻抗參數測量中的應用，根據電子測量的基本原理、計算方法和流程，利用了LabVIEW的特有語言—G語言—對被測對象進行程序編譯、運行、修改并Z終顯示運行結果 有高手幫忙翻譯下 展開
2009-06-12 22:57:18
377
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- 哪位英語高手幫我翻譯幾個地名？
- 以下幾個地名和句子：（是可書面應用的，不要口語，如是口語請注明） 1. 潘家園舊貨市場 2. 長安大戲院 3. 西單圖書大廈 4. 京廣ZX 5. 什剎海 6. 秀水 7. 建國門地鐵站 8. 百年奧運，夢想成真。
2005-08-23 00:00:40
342
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- 尋英語翻譯成中文
- 1.OpticalGasDetectionOpenPath(line-of–sight)GasDetectionemployingelectro-optical"spectralfinger-print"analysisoftheatmosphereusestheDifferentialOpticalAbsorptionSpectros... 1. Optical Gas Detection Open Path (line-of –sight) Gas Detection employing electro-optical "spectral finger-print" analysis of the atmosphere uses the Differential Optical Absorption Spectroscopy (DOAS) technique in a unique (patented) method. The use of discriminative UV and IR narrow band filtered sensors enables the detection， identification and concentration determination of Flammable & Explosive gases migrating in the atmosphere， at concentrations well below their explosive levels. The specific systems developed for detection of flammable or toxic gases employ a flash or filament light source， which is in communication with a detector that responds to the attenuation in the light intensity caused by the presence of the gas. This line of Optical Gas Detection Systems known as SafEye has been successfully introduced into the High Risk/High Value markets. 2. Optical Flame Detection Flame Detection employing electro-optical analysis of the electromagnetic radiation emitted by flames in the Ultraviolet and Infrared spectral bands. The patented spectral analysis of the Flames radiation signals includes frequency and time domain analysis， cross correlations and ratios between the various sensor inputs. Unique background radiation analysis enhances the flame detection accuracy in a cluttered environment that contains various emitting sources like: direct solar radiation， heaters and burners， light projectors， high voltage sparks and welding radiation， extreme temperature conditions. This line of Optical Flame Detectors named SharpEye was developed and introduced into the safety and high risk/high value fire protection markets. The SharpEye series includes UV， UV/IR， Triple IR (IR3) and CCTV Optical Flame Detectors. 3. Explosion & Fire conditions Detection Explosion & Fire conditions can be detected very early by monitoring their environmental characteristics such as: changes in temperature and pressure caused by gaseous decomposition processes， radiation emitted during such processes， decomposition by-products that can be monitored at very low concentrations in air. Monitoring combustion products such as: CO2， CO， NOx， HC (unburned hydrocarbons)， etc.， at very low concentrations in air (at PPM levels) enables very early and reliable detection of these conditions. The SafEye line of Optical Gas Analysis Systems includes UV and IR specific models. 4. Military Explosion Detection and Suppression Systems SAFE line of military vehicle fire and explosion detection and suppression systems was developed by Spectrex Inc. in order to protect personnel from skin burns and pressure shock. The systems suppress gas or vapor explosions in less than 150 milliseconds， with a speed of response of less than 3 milliseconds. Suppression is activated in less than 5 milliseconds to discharge and disperse the agent， thus providing a uniform extinguishing concentration. The systems have been incorporated successfully in thousands of military vehicles worldwide 展開
2008-03-29 11:33:27
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- 麻煩英文好的幫忙翻譯下~~~~
- 虛擬儀器技術與NI的優(yōu)勢及發(fā)展趨勢展望摘要：本文介紹了虛擬儀器的概念及發(fā)展。從虛擬儀器的組成，NI的優(yōu)勢及21世紀發(fā)展趨勢的展望進行了詳細的介紹。... 虛擬儀器技術與NI的優(yōu)勢及發(fā)展趨勢展望 摘要：本文介紹了虛擬儀器的概念及發(fā)展。從虛擬儀器的組成，NI的優(yōu)勢及21世紀發(fā)展趨勢的展望進行了詳細的介紹。 展開
2008-11-12 05:08:51
400
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- 英語高手幫忙翻譯段英文 謝謝！！
- 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 ef?cient 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 signi?cant 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 ef?ciency. 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 puri?cation of azo dyes ef?uents an issue of major technological importance. 展開
2011-05-06 19:00:45
584
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- 哪位高手能幫我翻譯一下 謝謝了
- 3.3. Microbial mapping The intensity of resonance Raman spectra of Cyt c allows for integration times below one second. Microbial mapping of an area of 50×50 μm2 with a resolution of 500 nm/pixel (10，000 single spectra) can be perform... 3.3. Microbial mapping The intensity of resonance Raman spectra of Cyt c allows for integration times below one second. Microbial mapping of an area of 50×50 μm2 with a resolution of 500 nm/pixel (10，000 single spectra) can be performed in less than 3 h. A further reduction of the measuring duration by a factor of 10 can be achieved by utilisation of an EMCCD camera (Coates et al.， 2004). Microbial mapping was done on granules from two different sequencing batch reactors (SBR) (Gaul et al.， 2006). The SBRs are used to analyse control parameters for the anaerobic ammonium oxidation. Fig. 7 shows two different microbial colonies in the same granulum. A graphical analysis of the spectroscopic data at 750 cm-1 (dominant resonant Raman band of Cyt c) and 2900 cm-1 (CH stretching mode) differentiated the two colonies. One colony shows stronger Raman signals at 750 cm-1 (blue frame). Whereas the other microorganisms have more amount of methyl or methylene groups (yellow frame). After the graphical analysis above， an average spectrum was constructed for each colony. The resulting averaged spectra were transferred to our Raman database of wastewater bacteria created by OPUS. The software recognized the microorganisms Fig. 5. Time series of N. eutropha Nm 57 which is captured by optical tweezers. Time difference between spectra: 1 s; Laser power: 9 mW. The bleaching effect due to photo-dissociation caused by laser radiation is easy to see. Fig. 6. The spectral heterogeneity of hierarchical clusteringis strongly dependent to the integration time. Bacteria from the same strain are only groupedtogether if the exposure time was the same. 246 R. P?tzold et al. / Journal of Microbiological Methods 72 (2008) 241–248 in the left colony as anammox bacteria， those in the upper right corner as Nitrosomonas. 展開
2008-11-08 00:52:54
436
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- 英語課文翻譯
- Ifyouhadtochoosethesinglemostimportantdiscoveryofthe20thcentury，youwouldhavearealdilemmaonyourhands.Injust100years，theworldchangedcompletely.Amazingdiscoveriesweremadeinm... If you had to choose the single most important discovery of the 20th century， you would have a real dilemma on your hands. In just 100 years， the world changed completely. Amazing discoveries were made in medicine， communications and transport， not to mention our knowledge of the world and space . Medical advances ranged from discovering the causes of diseased under microscopes to surgical procedures replacing diseased organs with donated ones.Communications changed with the introduction of mobile phones and the way we correspond went from writing letters to emailing. We started flying around the world and meanwhile， scientists figured out how to spilt the atom， previously thought to be the smallest particle of matter in the universe. Although it is impossible to choose the most important discovery， it is possible to single out a few pioneers of the 20th century.Here are five of them. 展開
2012-02-02 01:10:54
560
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- 請教英語高人，幫忙翻譯一下．急用，謝謝?。?！
- Theelementalcontentofrawmaterials，phosphogypsum，substrate(potassiumsalt)，products(superphosphateand“Amofoska”)，soil，andgrasswasdeterminedusingconventionalandepithermaln... The elemental content of raw materials， phosphogypsum， substrate (potassium salt)， products (superphosphate and “Amofoska”)， soil， and grass was determined using conventional and epithermal neutron activation analysis using the IBR-2 pulsed fast reactor at Frank Laboratory of Neutron Physics (FLNP)， Joint Institute for Nuclear Research (JINR)， Dubna， Russia. The analytical procedure was described elsewhere by Frontasyeva and Pavlov [15]. Quality control was based on the application of certified reference materials (CRMs): IAEA-336 (lichens)， IAEA-SDM (lake sediment) and IAEA-SL1 (soil). The certified values and the results obtained by NAA were compared (Table 2). Concentrations of most elements were in good agreement with the CRMs except for Ti， Ni， Ce， Eu， Dy and Rb， which differed from the certified value as follows: Ti - 41.7 %， Ni - 26.5 %， Ce - 24.3 %， Eu - 32.9 % and Dy - 33.3 % in IAEA-SL1 (soil) and Rb - 20.6 % in IAEA-336 (lichens). For the 21 elements in agreement with the certified values the bias observed was below 20 %. For 11 elements (Al， V， Mn， As， Br， Sc， Cr， Sm， Na， Co and Sb)， the bias ranged from 0.03 % to 5 %， for 5 elements (Fe， Zn， Ba， Th and Cs) the bias was greater than 5 % but lower than 10 %， and for 5 elements (La， Tb， Hf， Ta and U) the bias was determined to be between 10 % and 20 %. Samples of raw materials， phosphogypsum， substrate， products， soil (of about 0.1 g)， and grass (0.3 g) were irradiated in cadmium-screened channels 1 and 2 of the pneumatic “Regata” system described elsewhere by Frontasyeva and Pavlov [15]. In order to determine elements associated with long-lived radionuclides， samples were irradiated for 100 hours. Spectra of induced gamma activity were recorded after 4 and 20-24 days of cooling. Short irradiations， 5 minutes for grass samples and 60 seconds for the remaining samples， allowed determination of Al， Ca， Cl， I， K， Na， Mg， Mn， Ti and V. Gamma-ray spectra were recorded after 5 and 12 minutes after irradiation. Data processing was performed using software developed at FLNP JINR [16， 17]. All gamma-spectrometers and counting electronics were made at JINR [16]. The software developed at FLNP JINR for peak searching， peak fitting， and nuclide identification routines were used for processing the amplitude spectra [16]. In the case of the lack of analytical data， there was a half of the detection limit inserted for each analyte [18]. Principal component analysis (classical PCA and fuzzy PCA) was performed as a tool for searching the possible correlations between environmental and industrial samples that could implicate the impact of phosphatic fertilizer production on the environment adjacent to the plant. 請給一個比較能看懂的翻譯，謝謝. 展開
2007-06-03 08:49:34
477
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- 幫忙翻譯一下化工方面的單詞 英語
- 堿值測定器試劑移液管錐形瓶酸式滴定管甲基黃溴甲酚綠混合指示劑鹽酸標準溶液摩爾/升酸式滴定管... 堿值 測定器 試劑 移液管 錐形瓶 酸式滴定管 甲基黃溴甲酚綠混合指示劑 鹽酸標準溶液 摩爾/升 酸式滴定管 展開
2010-01-17 06:38:39
674
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- 誰可以幫我翻譯下這段話成英語，急用，求英語高手
- 本文簡述了國內外有關大氣生物氣溶膠的研究現狀及其展望。主要圍繞生物氣溶膠的研究意義，生物氣溶膠的研究歷史，生物氣溶膠的種類及來源，生物氣溶膠的濃度及粒徑分布特征，生物氣溶膠采樣技術與檢測，以及對生物氣溶膠未來發(fā)展的展望等六個方面進行了闡述。... 本文簡述了國內外有關大氣生物氣溶膠的研究現狀及其展望。主要圍繞生物氣溶膠的研究意義，生物氣溶膠的研究歷史，生物氣溶膠的種類及來源，生物氣溶膠的濃度及粒徑分布特征，生物氣溶膠采樣技術與檢測，以及對生物氣溶膠未來發(fā)展的展望等六個方面進行了闡述。ZD介紹生物氣溶膠的分布特征。 展開
2008-07-14 09:45:18
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