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| 1 | Community structure of β-Proteobacterial ammonia-oxidizing bacteria in prawn farm sediment显示文摘To examine the community structure of b-Proteobacterial ammonia-oxidizing bacteria(AOB)in prawn farm sediment,the 16S rRNA gene library was constructed with b-Proteobacterial AOB-specific primers.The library was screened by PCR-restriction fragment length polymorphism(RFLP)analysis and clones with unique RFLP patterns were sequenced.Two groups of b-Proteobacterial AOB,the Nitr-osomonas and the Nitrosospira,were detected.The Nitrosomonas occupied an absolute dominant position,accounting for more than 90% of total clones in the clone library,while the Nitrosospira accounting for 5.48%.Nitrosomonas-aliated clones were grouped into the Nitrosomonas marina and the Nitrosomonas sp.Nm143 clusters,and Nitrosospira-aliated clones were grouped into the Nitrosospira cluster 1.No other clusters of b-Proteobacterial AOB were found.The results enriched our knowledge of AOB diversity in the prawn farm sediment and provided important foundational data for further functional studies of these microbes in mariculture environments. | Ying Ma Lin Wang Lumin Qian | 2008 | Progress in Natural Science:Materials International2008,18,6: | 7 |
| 2 | Design, Optimization and Control of Extractive Distillation for Separation of Ethyl Acetate-Ethanol-Water Mixture Using Ionic Liquids显示文摘In this work, the process simulation of pressure-swing distillation(PSD) and extractive distillation(ED) using ionic liquid(IL) 1-butyl-3-methylimidazolium acetate([bmim][OAc]) as the entrainer for separation of ethyl acetateethanol-water mixture is performed. The design parameters of the two distillation processes are optimized with the minimum total annual cost(TAC) serving as the objective function. The results show that the TAC saving of ED process is 35.27% in comparison with that of PSD process in the case of achieving the same purity and yield of ethyl acetate.In addition, the dynamic controllability of ED process is further studied. The traditional two-point temperature control structure is proposed for the ED process, and it works pretty well while taking into account the disturbances in both feed rate and feed composition. | Ma Shoutao Shang Xianyong Li Lumin Xue Changyong Li Jie Sun Lanyi | 2019 | China Petroleum Processing & Petrochemical Technology2019,21,1: | 2 |
| 3 | An overview of functional biolubricants显示文摘At present,more and more diseases are associated with the lubrication dysfunction,which requires a systematic study of the complex lubrication behavior of tissues and organs in human body.Natural biomacromolecular lubricants are essential for maintaining ultra-low coefficients of friction between sliding biological interfaces.However,when the surface lubrication performance of tissues or organs destroys heavily,it will bring friction/shear damage for sliding contact interfaces.Therefore,the application of exogenous biological lubricating materials to improve the lubrication situation of damaged tissue or organ interfaces has attracted extensive attention of researchers.In this review,based on a simple summary of lubrication mechanism at sliding biological interface,we systematically introduce the research progress of several kinds of representatively biolubrication materials,including eye drops,tissue anti-adhesion agents,joint lubricants,and medical device lubricants.Meanwhile,the lubrication mechanism and individual advantage and shortcoming for each of these synthetic exogenous lubricated materials are clarified.Correspondingly,the important lubrication application functionality of these biolubricant materials in typically medical surgery scenes,such as dry eye syndrome,tissue adhesion,arthritis,and interventional medical devices,is discussed.Finally,we look forward to the future development direction of artificial biolubricant materials. | Lumin YANG Xiaoduo ZHAO Zhengfeng MA Shuanhong MA Feng ZHOU | 2023 | Friction2023,11,1: | 1 |
| 4 | Electrochemical reduction characteristics and the mechanism of chlorinated hydrocarbons at the copper electrode显示文摘The electrochemical reduction characteristics of chlorinated hydrocarbons were investigated by cyclic voltam-metry technique.The reduction mechanism and activity of the chlorinated hydrocarbons at the copper electrode were explored.The relationship between the structure of chlori-nated hydrocarbons and their reductive activity were dis-cussed.The experimental results showed that chlorinated alkanes and a portion of chlorinated aromatic hydrocarbons could be reduced directly at the copper electrode.However,chlorinated aromatic hydrocarbons were not easy to reduce at the copper electrode.The results provided a theoretical basis for the catalyzed iron inner electrolysis method. | XU Wenying GAO Tingyao ZHOU Rongfeng MA Lumin | 2007 | Frontiers of Environmental Science & Engineering2007,1,2: | 1 |
| 5 | Application of different molecular sieves in photothermal catalysis of Jatropha oil显示文摘The preparation of green and economical bio-aviation fuel is a priority for the sustainable development industry.In this study,Jatropha oil was used as a raw material to catalyze the conversion of raw material to aviation kerosene fraction by photothermal coupling under the conditions of light and low temperature.The correlations among conversion rate,target alkane selectivity,composition distribution,and catalyst microstructure were investigated by X-ray diffraction(XRD),high-resolution transmission electron microscopy(HRTEM),nitrogen(N2)adsorption and desorption,X-ray fluorescence(XRF),ammoniatemperature programmed desorption(NH3-TPD),ultraviolet-visible spectrophotometry(UV-Vis),and other characterization.The correlation between conversion and target alkane selectivity and composition distribution and catalyst microstructure was investigated,and different modification methods and different molecular sieve materials were selected.The results showed that the molecular sieves modified with the solid dispersion method could retain the structural stability of titanium dioxide(TiO2)and molecular sieves to a great extent while slightly enhancing the pore capacity and pore size of the catalyst to make it easier to adsorb reactants;the introduction of active metal platinum(Pt)could reduce the forbidden bandwidth of the catalyst,increase the weak acid amount of the catalyst,improve the adsorption capacity of hydrogen(H2),and thus improve the catalytic ability,resulting in a suitable catalyst for this study:P-21.The photothermal catalytic reaction of Jatropha oil using P-21 catalyst obtained 97.21%conversion and 74.99%selectivity of the target alkanes under the optimal process parameters.The results of this study provide effective catalyst parameters for research in the field of clean energy. | Yijie Yang Longlong Ma Lumin Sun Xinghua Zhang Chao Gui Yubao Chen | 2023 | International Journal of Agricultural and Biological Engineering2023,16,5: | 0 |