|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Simultaneous oxidation of NO,SO_2 and Hg^0 from flue gas by pulsed corona discharge显示文摘A process capable of simultaneously oxidizing NO,SO2,and Hg0 was proposed,using a high-voltage and short-duration positive pulsed corona discharge.By focusing on NO,SO2,and Hg0 oxidation effciencies,the influences of pulse peak voltage,pulse frequency,initial concentration,electrode number,residence time and water vapor addition were investigated.The results indicate that NO,SO2 and Hg0 oxidation effciencies depend primarily on the radicals(OH,HO2,O) and the active species(O3,H2O2,etc.) produced by the pulsed corona discharge.The NO,SO2 and Hg0 oxidation effciencies could be improved as pulse peak voltage,pulse frequency,electrode number and residence time increased,but they were reduced with increasing initial concentrations.By adding water vapor,the SO2 oxidation effciency was improved remarkably,while the NO oxidation effciency decreased slightly.In our experiments,the simultaneous NO,SO2,and Hg0 oxidation effciencies reached to 40%,98%,and 55% with the initial concentrations 479 mg/m3,1040 mg/m3,and 15.0 μg/m3,respectively. | XU Fei,LUO Zhongyang,CAO Wei,WANG Peng,WEI Bo,GAO Xiang,FANG Mengxiang,CEN Kefa State key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China. | 2009 | Journal of Environmental Sciences2009，21，3： | 22 |
| 2 | Research on coal staged conversion poly-generation system based on fluidized bed显示文摘A new coal staged conversion poly-generation system combined coal combustion and pyrolysis has been developed for clean and high efficient utilization of coal.Coal is the first pyrolysed in a fluidized pyrolyzer.The pyrolysis gas is then purified and used for chemical product or liquid fuel production.Tar is collected during purification and can be processed to extract high value product and to make liquid fuels by hydro-refining.Semi-coke from the pyrolysis reactor is burned in a circulating fluidized bed(CFB)combustor for heat or power generation.The system can realize coal multiproduct generation and has a great potential to increase coal utilization value.A 1 MW poly-generation system pilot plant and a 12 MW CFB gas,tar,heat and power poly-generation system was erected.The experimental study focused on the two fluidized bed operation and characterization of gas,tar and char yields and compositions.The results showed that the system could operate stable,and produce about 0.12 m^(3)/kg gas with 22 MJ/m^(3)heating value and about 10 wt%tar when using Huainan bituminous coal under pyrolysis temperature between 500 and 600℃.The produced gases were mainly H_(2),CH_(4),CO,CO_(2),C_(2)H_(4),C_(2)H_(6),C_(3)H_(6)and C_(3)H_(8).The CFB combustor can burn semi-coke steadily.The application prospect of the new system was discussed. | Mingjiang Ni Chao Li Mengxiang Fang Qinhui Wang Zhongyang Luo Kefa Cen | 2014 | International Journal of Coal Science & Technology2014，1，1： | 13 |
| 3 | Automatic analytical approach for the determination of 12 illicit drugs and nicotine metabolites in wastewater using on-line SPE-UHPLC-MS/MS显示文摘In this study,we developed a novel on-line solid phase extraction(SPE)-ultra-high-performance liquid chromatography tandem mass spectrometry(UHPLC-MS/MS)-based analytical method for simultaneously quantifying 12 illicit drugs and metabolites(methamphetamine,amphetamine,morphine,codeine,6-monoacetylmorphine,benzoylecgonine,3,4-methylenedioxymethamphetamine,3,4-methylenedioxyamphetamine,cocaine,ketamine,norketamine,and methcathinone)and cotinine(COT)in wastewater samples.The analysis was performed by loading 2 m L of the sample onto an Oasis hydrophilic-lipophilic balance cartridge and using a cleanup step(5%methanol)to eliminate interference with a total run time of 13 min.The isotope-labeled internal standard method was used to quantify the target substances and correct for unavoidable losses and matrix effects during the on-line SPE process.Typical analytical characteristics used for method validation were sensitivity,linearity,precision,repeatability,recovery,and matrix effects.The limit of detection(LOD)and limit of quantification(LOQ)of each target were set at 0.20 ng/L and 0.50 ng/L,respectively.The linearity was between 0.5 ng/L and250 ng/L,except for that of COT.The intra-and inter-day precisions were<10.45%and 25.64%,respectively,and the relative recovery ranged from 83.74%to 162.26%.The method was used to analyze various wastewater samples from 33 cities in China,and the results were compared with the experimental results of identical samples analyzed using off-line SPE.The difference rate was between 19.91%and-20.44%,and the error range could be considered acceptable.These findings showed that on-line SPE is a suitable alternative to off-line SPE for the analysis of illicit drugs in samples. | Jingyuan Wang Likai Qia Chenzhi Hou Tingting Zhang Mengyi Chen Haitao Meng Mengxiang Su Hui Xu Zhendong Hua Youmei Wang Bin Di | 2021 | Journal of Pharmaceutical Analysis2021，11，6： | 5 |
| 4 | A comprehensive CFD combustion model for supercritical CFB boilers显示文摘A combustion model of a large-scale supercritical circulati ng fluidized bed (CFB) boiler was developed for comprehensive computational-fluid-dynamics analysis. The model incorporates gas-solid hydrodynamics, coal combustion, heat transfer on heat exchange surfaces in the furnace, and heat transfer between fumace and working medium in the heat transfer tubes. In simulating the dense and dilute phases in the fumace, the gas-solid hydrodynamics is based on the Euler-Euler model and energy-minimization multiscale drag model. Coal combustion entails evaporation, devolatilization, char combustion, gas homoge neous reaction, and pollutant emission. The coefficient ofheat transfer between gas-solid and the waterwall is estimated using the cluster renewal model, and for radiation, the discrete ordinate model is used. Moreover, thermohydraulic processes in the membrane wall are also in eluded in the heat transfer process. The model was successfully applied in simulations of a 350-MW supercritical CFB boiler. Detailed distributions of solids concentration, oxygen, heat flux, and working medium temperature in the boiler furnace are presented. | Linjie Xu Leming Cheng JieqiangJi Qinhui Wang Mengxiang Fang | 2019 | Particuology2019，17，2： | 5 |
| 5 | Acetylglutamate kinase is required for both gametophyte function and embryo development in Arabidopsis thaliana显示文摘The specific functions of the genes encoding arginine biosynthesis enzymes in plants are not well characterized. We report the isolation and characterization of Arabidopsis thaliana N-acetylglutamate kinase(NAGK), which catalyzes the second step of arginine biosynthesis. NAGK is a plastid-localized protein and is expressed during most developmental processes in Arabidopsis. Heterologous expression of the Arabidopsis NAGK gene in a NAGK-deficient Escherichia coli strain fully restores bacterial growth on arginine-deficient medium. nagk mutant pollen tubes grow more slowly than wild type pollen tubes and the phenotype is restored by either specifically through complementation by NAGK in pollen, or exogenous supplementation of arginine. nagk female gametophytes are defective in micropylar pollen tube guidance due to the fact that female gametophyte cell fate specification was specifically affected. Expression of NAGK in synergid cells rescues the defect of nagk female gametophytes. Lossof-function of NAGK results in Arabidopsis embryos not developing beyond the four-celled embryo stage. The embryo-defective phenotype in nagk/NAGK plants cannot be rescued by watering nagk/NAGK plants with arginine or ornithine supplementation. In conclusion,our results reveal a novel role of NAGK and arginine in regulating gametophyte function and embryo development, and provide valuable insights into arginine transport during embryo development. | Jie Huang Dan Chen Hailong Yan Fei Xie Ying Yu Liyao Zhang Mengxiang Sun Xiongbo Peng | 2017 | Journal of Integrative Plant Biology2017，59，9： | 4 |
| 6 | Predictions of NOx/N2O emissions from an ultra-supercritical CFB boiler using a 2-D comprehensive CFD combustion model显示文摘NOx and N2O emissions from an ultra-supercritical circulating fluidized bed(CFB)boiler were predicted using a two dimensional(2-D)comprehensive computational fluid dynamics(CFD)combustion model.This model was developed from a three dimensional model for a supercritical CFB boiler previously constructed by our group.Based on an analysis of the NOx and N2O conversion processes in a CFB boiler,the primary formation and destruction reactions were introduced into the 2-D model and coupled.The resulting model was validated using data from the Baima 600 MW supercritical CFB boiler,and then applied to a 660 MW ultra-supercritical CFB boiler.The effects of excess air,the secondary air(SA)to(primary air(PA)plus SA)ratio and the SA injection height on NOx and N2O emissions were investigated.The results show that a higher excess air volume increases both NOx and N2O emissions,while increasing the SA/(PA+SA)ratio somewhat reduces both the NOx and N2O concentrations.On the basis of the results of this work,optimal locations for SA injection ports so as to lower NOx and N2O emissions are recommended. | Jieqiang Ji Leming Cheng Yangjun Wei Junfeng Wang Xinyu Gao Mengxiang Fang Qinhui Wang | 2020 | Particuology2020，18，2： | 4 |
| 7 | Review of dielectric drying of foods and agricultural products显示文摘Dielectric drying methods with microwave(MW)and radio frequency(RF)energy as emerging drying technologies have drawn much attention from both research community and industry over the past decades.When properly applied,MW and RF drying can be energy efficient and of great potential to be used for a wide range of materials.However there are few reviews that cover both MW and RF drying technologies.Such a review is timely considering the ever increasing interest of the food industry in adapting energy efficient new drying technologies.This paper attends to provide a comprehensive review on uses of MW and RF energy in drying of foods and agricultural products.It provides a brief discussion on the fundamental theory of MW and RF heating and gives a general overview of the works of the most active research groups on modeling of drying kinetic,energy control strategy and the influence of MW and RF drying conditions on quality and structural changes of the final products.Finally,it proposes possible solutions to main challenges facing the industrial adaptation of the technologies and makes suggestions on further research directions to improve the dielectric drying. | Yunyang Wang Yuanrui Li Shaojin Wang Li Zhang Mengxiang Gao Juming Tang | 2011 | International Journal of Agricultural and Biological Engineering2011，4，1： | 4 |
| 8 | Atomic force microscopic view of the fine topography on the tobacco stigma surface during its response to pollination显示文摘During compatible pollination in tobacco, an extracellular matrix (ECM) is secreted from the stigma surface; however, it is unknown whether the pattern of secretion across the stigma depends on the pollen source. In fact, technical limitations have prevented clear observation of ECM secretion. Here, we report the detailed topographic changes on the stigma surface that accompanies intraspecies and interspecies pollination in tobacco using contact mode atomic force microscopy (AFM). Our results, which show the dynamics and time course of ECM secretion after pollination, indicate that a certain pattern of secretion already exists on the stigma prior to pollination. Intraspecies induced a two-step response, characterized by topographical changes on the stigma surface several hours after pollina-tion, which was distinct from the pattern of ECM secretion induced by interspecies pollination. This difference was confirmed by root-mean-square analysis, which assessed the roughness of the stigma surface. Our findings indicate that compatible pollination not only induces ECM secretion from the stigma, but also results in a specific distribution of the ECM. Thus, this study demonstrates the pow-erful potential of AFM in studying the pollen-stigma interaction. | WU Hui LI Meng SUN MengXiang | 2008 | Chinese Science Bulletin2008，53，7： | 4 |
| 9 | Effects of CO_(2)atmosphere on slow pyrolysis of high-ash lignite显示文摘Slow pyrolysis of a typical high-ash lignite in China was carried out in atmospheres of N_(2),20%CO_(2)/N_(2),40%CO_(2)/N_(2),and 60%CO_(2)/N_(2)in a fixed bed reactor.The evolution of char,tar,and gases in yield and characteristics,and the physico-chemical characteristics of chars in different atmospheres were compared.Results revealed that CO_(2)almost behaves as an inert gas in the evolution of char and CO before 600℃.The decrease in char and CO_(2)yields and the increase in CO yield at temperatures higher than 600℃are ascribed to the occurrence of char-CO_(2)gasification.The higher the CO_(2)level present in the atmosphere,the higher the severity of the gasification becomes.Introducing CO_(2)into the atmosphere raises tar and water yields but cuts down H_(2),CH_(4),and C_(2)H_(6)yields.The promotion of tar yield results from the higher phenols and aliphatics yields in the presence of CO_(2).The reduction of H_(2)yield is associated with the increase in water yield,while the decline of light hydrocarbon gases is connected with the suppression effects of CO_(2)on methyl decomposition.The role of inherent minerals was also investigated by comparing product yields from raw coal and demineralized coal.The comparison indicated that the char-CO_(2)gasification rate is sharply reduced to nearly zero without the catalytic effects of calcium,iron,and magnesium minerals.The evolution of tar and light hydrocarbon gases in the CO_(2)-containing atmosphere greatly depends on inherent minerals.Without minerals,tar yield is inhibited in the presence of CO_(2).In the absence of minerals,CO_(2)hardly has influences on CH_(4)and C_(2)H_(6)yields. | Qinhui Wang Kaikun Li Zhihang Guo Mengxiang Fang Zhongyang Luo Kefa Cen | 2018 | Carbon Resources Conversion2018，1，1： | 4 |
| 10 | Analysis of bacitracin and its related substances by liquid chromatography tandem mass spectrometry显示文摘A suitable liquid chromatography quadrupole time-of-flight mass spectrometric(LC–Q-TOF–MS) method was developed for separation and characterization of related substances in bacitracin test drug. The separation was performed on Li Chrospher RP-18 column using methanol as mobile phase A and 0.2% ammonium acetate buffer solution as mobile phase B in gradient elution. A total of 12 related substances were detected through high resolution mass spectrometric determination in a positive electrospray ionization mode. They were identified as co-existing active components and degradation products of bacitracin through the analysis and elucidation of both the protonated parents and the product ions of all the related substances and their fragmentation pathways were also proposed. | Suleiman Ahmed Suleiman Fan Song Mengxiang Su Taijun Hang Min Song | 2017 | Journal of Pharmaceutical Analysis2017，7，1： | 3 |
| 11 | Anti-wear beam effects on gas-solid hydrodynamics in a circulating fluidized bed显示文摘Anti-wear beams installed on water walls of circulating fluidized bed(CFB) boilers are one of the most effective ways to protect against water-wall erosion.Beam effects from,for example,beam size and superficial gas velocity were investigated on gas-solid hydrodynamics in a CFB test rig using CFD simulations and experimental methods.The downward flow of the wall layer solids is observed to be disrupted by the beam but is then restored some distance further downstream.When falling solids from the wall layer hit the anti-wear beam,the velocity of the falling solids decreases rapidly.A fraction of the solids accumulates on the beam.Below the beams,the falling solids have reduced velocities but upward-moving solids were observed on the wall.The effect of the beam increases with width and superficial gas velocity.Wear occurs mainly above the beam and its variation with width is different above to below the beam.There is an optimum width that,when combined with beam height,results in less erosion. | Yunfei Xia Leming Cheng Chunjiang Yu Linjie Xu Qinhui Wang Mengxiang Fang | 2015 | Particuology2015，13，2： | 3 |
| 12 | Rotation speed measurement of moving particles in a CFB riser显示文摘This paper presents a study on measuring rotation speed of moving glass beads with an average diameter of 500 m in a pilot-scale circulating fluidized bed (CFB) riser with a high-speed digital imaging system. Two methods have been developed to calculate particle rotation speed from the particle images. The first method consists of a fully automated algorithm based on cross-correlation of gray distribution of particle images for particles whose rotation axes are (nearly) perpendicular to the imaging plane, and the second method calculates the speed of particle rotation by identifying its rotation axis using two or more characteristic points on its surface. The reliability of the two methods is verified by using a small sphere with known speed and direction of rotation. The first method is shown to be capable of measuring accurately the rotation speed for the particle with a rotation axis (nearly) perpendicular to the imaging plane and filtering off other particles using an appropriate threshold of correlation coefficient. The second method is shown to be capable of yielding both the speed and direction of particle rotation, with a measurement error of less than 10%. Results of both methods on real glass beads in a CFB riser are compared against each other. | Xuecheng Wu Qinhui Wang Zhongyang Luo Mengxiang Fang Kefa Cen | 2009 | Particuology2009，7，4： | 3 |
| 13 | Liposome-based anchoring and core-encapsulation for combinatorial cancer therapy显示文摘Downregulated pro-apoptotic protein in cancer cells compromises the chemotherapy by a cytotoxic drug.Here,we report co-delivery of a pro-apoptotic protein,caspase 3(Cas 3),and cytotoxic agent,oridonin(ORD),for synergistic cancer treatment,using a method of liposome-based anchoring and core encapsulation.First,ORD is modified with hyaluronic acid(HA)to improve its solubility.Then,the targeted co-delivery system is prepared by assembling the conjugate HA-ORD onto the Cas 3-loaded liposomes,which the surface HA can target the CD44 receptor on cancer cells.In vitro,the co-loaded liposomes(120 nm)are specifically taken up by 4T1 cells and endow a 1.5-fold increase of Cas 3.After intravenous injection into the tumor-bearing mice,the liposomes accumulate in the tumor with high efficacy and significantly inhibit tumor growth via promoting apoptosis and anti-proliferation of cancer cells.Mechanistically,the co-delivery works synergistically by upregulating the activated Cas form,cleaved-Cas 3. | Qingqing Xiao Xiaotong Li Chang Liu Yi Yang Yuqi Hou Ying Wang Mengxiang Su Wei He | 2022 | Chinese Chemical Letters2022，33，9： | 2 |
| 14 | Acid modified carrier on catalytic oxidation of dichloromethane over CeO_(2)/HZSM-5 catalysts显示文摘In this study,a series of Hydrogen-Zeolite Socony Mobil-5-X(HZSM-5-X) catalysts were prepared by acid modification,then Ce/HZSM-5-X(X=0,0.2,0.4,1.0,2.0) catalysts were prepared by impregnation method.The catalytic performance of the catalysts on dichloromethane(DCM) oxidation was investigated.Through different characterizations,HZSM-5-X exhibit high specific surface area,good redox ability,rich acidity and much suitable acidic site distribution after acid treatment.Among them,Ce/HZSM-5-0.4 shows better catalytic activity with the lowest by-product and the best CO_(2) yield.Its T_(90) is 302℃ and the CO_(2) yield of T_(90) is more than 80 wt%,which demonstrates that the acid modification of carrier plays the positive effect on the catalytic capacity for DCM oxidation. | Mengxiang Li Jing Mo Xuanyu Gu Yue Zhou Mengjie Fan Shubao Shen Yingwen Chen | 2022 | Journal of Rare Earths2022，40，10： | 2 |
| 15 | Arabidopsis RAN 1 Mediates Seed Development through Its Parental .Ratio by Affecting the Onset of Endosperm Cellularization显示文摘尽管以前的研究证明了内乳开发被它的父母染色体体质影响,控制 parent-of-origin 效果的基因基础和分子的机制要求进一步的说明。这里我们 showthat 地岬相关的原子蛋白质(RAN1 ) 1 在 Arabidopsis thaliana 调整内乳开发。相互的十字在之间野类型(WT ) 并且当 RAN1 down-regulated/up-regulated 个人被用作一个男性 / 女性的父母时,转基因的线错误快车 RAN1 (msRAN1 ) 产生了小 F1 种子;相反,当 RAN1 down-regulated/up-regulated 植物被用作一个女性 / 男性的父母时, F1 种子被放弃,建议种子开发被 RAN1 的 theparental 染色体比率影响。而在野类型的植物的 RAN1 表示在内乳 cellularization 的发作前被减少,从相互的 crossesbetween WT 和 msRAN1 的 F1 种子显示出反常内乳 cellularization 和 RAN1 的宫外的表示。当 msRAN1 植物在相互的十字被使用时,也控制内乳 cellularizationwas 的基因也在这些相互的十字影响了的 MINISEED3 (MINI3 ) 的表示,和 misregulationof MINI3 活动救了 F1 种子。一起拿,我们的结果建议 RAN1 的父母比率通过它和 MINI3.Key 词的基因相互作用调整内乳 cellularization 的发作: | Peiwei Liu Ming Qi Yuqian Wang MingQin Chang Chang Liu Mengxiang Sun Weicai Yang Haiyun Ren | 2014 | Molecular Plant2014，7，8： | 2 |
| 16 | Cryopreservation of Pollen by Vitrification in Brassica显示文摘CryopreservationofPolenbyVitrificationinBrasicaXuBingfang,HanHongmei,ZhengCongyi,SunMengxiangColegeofLifeSciences,WuhanUnive... | Xu Bingfang Han Hongmei Zheng Congyi Sun Mengxiang | 1997 | Wuhan University Journal of Natural Sciences1997，2，1： | 2 |
| 17 | Spatial and temporal dynamics of microbial community composition and factors influencing the surface water and sediments of urban rivers显示文摘The temporal and spatial characteristics of urban river bacterial communities help us understand the feedback mechanism of bacteria to changes in the aquatic environment.The Fuhe River plays an important role in determining the water ecological environment of Baiyangdian Lake.16S rRNA gene sequencing was used to study the microbial distribution characteristics in the Fuhe River in different seasons.The results showed that some environmental factors of the surface water(ammonia nitrogen(NH_(3)^(-)N),total nitrogen(TN),and total phosphorus(TP))were different on the spatial and temporal scales.Moreover,there were no seasonal differences in the contents of TN,TP,total organic carbon(TOC),or heavy metals in the sediments.The distributions of Cyanobacteria,Actinomycetes and Firmicutes in the water and Actinomycetes and Planctomycetes in the sediments differed significantly among seasons(P<0.05).There were significant spatial differences in bacteria in the surface water,with the highest abundance of Proteobacteria recorded in the river along with the highest nutrient concentration,while the abundance of Bacteroidetes was higher in the upstream than the downstream.Microbial communities in the water weremost sensitive to temperature(T)and the TP concentration(P<0.01).Moreover,differences in the bacterial community were better explained by the content of heavy metals in the sediments than by the chemical characteristics.A PICRUStmetabolic inference analysis showed that the effect of high summer temperatures on the enzyme action led to an increase in the abundances of the metabolic-related genes of the river microorganisms. | Hongjie Wang Xingchun Liu Yali Wang Shengqi Zhang Guangming Zhang Yangyang Han Mengxiang Li Ling Liu | 2023 | Journal of Environmental Sciences2023，，2： | 2 |
| 18 | Efficacy in mi-crobial sterilization of pulsed magnetic field treatment显示文摘 | Ma Haile Pan Zhongli? Gao Mengxiang | 2008 | Inter-national Journal of Food Engineering2008，4，4： | 1 |
| 19 | In vitro antifungal activity of baicalin against Candida albicans biofilms via apoptotic induction显示文摘 | TianMing Wang GaoXiang Shi Jing Shao DaQiang Wu YuanYuan Yan MengXiang Zhang YanYan Cui ChangZhong Wang | 2015 | Microbial Pathogenesis2015，，： | 1 |
| 20 | Editor’s note显示文摘The XXth International Congress on Sexual Plant Reproduction (SPR) was held from August 4 to 8, 2008, in Brasília, Brazil. Shortly afterward, 'Frontiers in Sexual Plant Reproduction III' was held on October 17–19, 2008, in Tucson, Arizona. Both conferences demonstrated that the richly historic | SUN MengXiang | 2009 | Chinese Science Bulletin2009，54，14： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员