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| 1 | Biogeochemical sequestration of carbon within phytoliths of wetland plants: A case study of Xixi wetland, China显示文摘As an important long-term terrestrial carbon sequestration mechanism, biogeochemical sequestration of carbon within phytoliths may play a significant role in the global carbon cycle and climate change. The aim of this study is to explore the potential of carbon bio-sequestration within phytoliths produced by wetland plants. The results show that the occluded carbon content of phytoliths in wetland plants ranges from 0.49% to 3.97%, with a CV (coefficient of variation) value of 810%. The data also indicate that the phytolith-occluded carbon (PhytOC) content of biomass for wetland plants depends not only on the phytolith content of biomass, but also the efficiency of carbon occlusion within phytoliths during plant growth in herb-dominated fens. The fluxes of carbon bio-sequestration within phytoliths of herb-dominated fen plants range from 0.003 to 0.077 t CO2 equivalents t-e-CO2ha-1a-1 . In China, 0.04×106 to 1.05×106t CO2 equivalents per year may be sequestrated in phytoliths of herbaceous-dominated fen plants. Globally, taking a fen area of 1.48×108 ha and the largest phytolith carbon biosequestration flux (0.077 t-e-CO 2 ha-1a-1 ) for herb-dominated fen plants, about 1.14×10 7 t CO 2 equivalents per year would have been sequestrated in phytoliths of fen plants. If other wetland plants have similar PhytOC production flux with herb-dominated fen plants (0.077 t-e-CO2ha-1a-1 ), about 4.39×10 7 t-e-CO2a-1 may be sequestrated in the phytoliths of world wetland plants. The data indicate that the management of wetland ecosystems (e.g. selection of plant species) to maximize the production of PhytOC have the potential to bio-sequestrate considerable quantities of atmospheric CO2 . | LI ZiMin SONG ZhaoLiang JIANG PeiKun | 2013 | Chinese Science Bulletin2013，58，20： | 18 |
| 2 | Primary studies on integration optimization of differential steering of electric vehicle with motorized wheels based on quality engineering显示文摘The model of the differential steering system(DSS) of electric vehicle with motorized wheels and the three-degree-of-freedom dynamic model of vehicle are built.Based on these models,the concepts and quantitative expressions of steering road feel,steering portability and steering stability are proposed.Through integrating the Monte Carlo descriptive sampling,elitist non-dominated sorting genetic algorithm(NSGA-II) and Taguchi robust design method,the system parameters are optimized with steering road feel and steering portability as optimization targets,and steering stability and steering portability as constraints.The simulation results show that the system optimized based on quality engineering can improve the steering road feel,guarantee steering stability and steering portability and thus provide a theoretical basis for the design and optimization of the electric vehicle with motorized wheels system. | ZHAO WanZhong WANG ChunYan SUN PeiKun LIU Shun | 2011 | Science China(Technological Sciences)2011，54，11： | 15 |
| 3 | Analysis of air quality characteristics of Beijing–Tianjin–Hebei and its surrounding air pollution transport channel cities in China显示文摘Beijing–Tianjin–Hebei(BTH)and its surrounding areas are very important to air pollution control in China.To analyze the characteristics of BTH and its surrounding areas of China,we collected 5,641,440 air quality data from 161 air monitoring stations and 37,123,000 continuous monitoring data from air polluting enterprises in BTH and surrounding cities to establish an indicator system for urban air quality portraits.The results showed that particulate matter with aerodynamic diameters of<2.5μm(PM2.5),particulate matter with aerodynamic diameters of<10μm(PM10)and SO2 improved significantly in 31 cities from2015 to 2018,but ozone deteriorated.Air quality in BTH and the surrounding areas showed obvious seasonal characteristics,among which PM2.5,PM10,SO2,and NO2 showed a'U'type distribution from January to December,while O3 had an'inverted U'distribution.The hourly changes in air quality revealed that peaks of PM2.5,PM10 and NO2 appeared from 8:00 to 10:00,while those for O3 appeared at 15:00–16:00.The exposure characteristics of the 31 cities showed that six districts in Beijing had the highest air quality population exposure,and that exposure levels in Zhengzhou,Puyang,Anyang,Jincheng were higher than the average of the 31 investigated cities.Additionally,multiple linear regression revealed a negative correlation between meteorological factors(especially wind and precipitation)and air quality,while a positive correlation existed between industrial pollution emissions and air quality in most of BTH and its surrounding cities. | Cuicui Xiao Miao Chang Peikun Guo Meifeng Gu Yang Li | 2020 | Journal of Environmental Sciences2020，32，1： | 15 |
| 4 | Rapid in-situ reaction synthesis of novel TiC and carbon nanotubes reinforced titanium matrix composites显示文摘In-situ TiC and remained multi-walled carbon nanotubes(MWCNTs) reinforced Ti composites were synthesized using vacuum hot-press sintering and hot rolling. The effect of weight fraction of MWCNTs on microstructural evolution and mechanical properties of the Ti composites was investigated. The results indicated that both proportion and particle size of TiC increased in proportion to MWCNTs content, which resulted in different matrix microstructure, and the grains were obviously refined after rolling deformation. The hardness tests indicated that MWCNTs addition could make the composites harden, and 18.4%improvement in hardness was obtained after hot rolling. The significant improvement in both strength and hardness could be attributed to grain refinement, solid solution strengthening of carbon and dispersion strengthening of TiC particles and remained MWCNTs. A good combination of strength and ductility were achieved in Ti–1 wt% MWCNTs composites, which were in accordance with the uniform distribution of smaller-sized TiC particles in Ti matrix. | Xianglong Sun Yuanfei Han Sanchen Cao Peikun Qiu Weijie Lu | 2017 | Journal of Materials Science & Technology2017，33，10： | 6 |
| 5 | Study on the Hungarian algorithm for the maximum likelihood data association problem显示文摘A specialized Hungarian algorithm was developed here for the maximum likelihood data association problem with two implementation versions due to presence of false alarms and missed detections. The maximum likelihood data association problem is formulated as a bipartite weighted matching problem. Its duality and the optimality conditions are given. The Hungarian algorithm with its computational steps, data structure and computational complexity is presented. The two implementation versions, Hungarian forest (HF) algorithm and Hungarian tree (HT) algorithm, and their combination with the nave auction initialization are discussed. The computational results show that HT algorithm is slightly faster than HF algorithm and they are both superior to the classic Munkres algorithm. | Wang Jianguo He Peikun Cao Wei | 2007 | Journal of Systems Engineering and Electronics2007，18，1： | 4 |
| 6 | Effect of micro-bubbles on coagulation flotation process of dyeing wastewater显示文摘 | Shu Liu Qunhui Wang Hongzhi Ma Peikun Huang Jun Li Takashige Kikuchi | 2010 | Separation and Purification Technology2010，，3： | 3 |
| 7 | Effect of BaNH,CaNH,Mg3N2 on the activity of Co in NH3 decomposition catalysis显示文摘Development of active and non-noble metal-based catalyst for H2 production via NH3 decomposition is crucial for the implementation of NH3 as a H2 carrier.Co-based catalysts have received increasing attention because of its high intrinsic activity and moderate cost.In this work,we examined the effect of BaNH,CaNH and Mg3 N2 on the catalytic activity of Co in the NH3 decomposition reaction.The H2 formation rate ranks the order as Co-BaNH>Co-CaNH>Co-Mg3 N2≈Co/CNTs within a reaction temperature range of 300-550℃.It is worth pointing out that the H2 formation rate of Co-BaNH at 500℃reaches20 mmolH2 gcat-1 min-1,which is comparable to those of the active Ru/Al2 O3(ca.17 mmolH2 gcat-1 min1)and Ru/AC(21 mmolH2 gcat-1 min-1)catalysts under the similar reaction conditions.In-depth research shows that Co-BaNH exhibits an obviously higher intrinsic activity and much lower Ea(46.2 kJ mol-1)than other Co-based catalysts,suggesting that BaNH may play a different role from CaNH,Mg3 N2 and CNTs during the catalytic process.Combined results of XRD,Ar-TPD and XAS show that a[Co-N-Ba]-like intermediate species is likely formed at the interface of Co metal and BaNH,which may lead to a more energy-efficient reaction pathway than that of neat Co metal for NH3 decomposition. | Pei Yu Han Wu Jianping Guo Peikun Wang Fei Chang Wenbo Gao Weijin Zhang Lin Liu Ping Chen | 2020 | Journal of Energy Chemistry2020，29，7： | 3 |
| 8 | Effect of micro-bubbles on coagulation flotation process of dyeing wastewater显示文摘 | Shu Liu Qunhui Wang Hongzhi Ma Peikun Huang Jun Li Takashige Kikuchi | 2010 | Separation and Purification Technology2010，，3： | 3 |
| 9 | Nonradical-dominated peroxymonosulfate activation through bimetallic Fe/Mn-loaded hydroxyl-rich biochar for efficient degradation of tetracycline显示文摘Biochar-based transition metal catalysts have been identified as excellent peroxymonosulfate(PMS)activators for producing radicals used to degrade organic pollutants.However,the radical-dominated pathways for PMS activation severely limit their practical applications in the degradation of organic pollutants from wastewater due to side reactions between radicals and the coexisting anions.Herein,bimetallic Fe/Mn-loaded hydroxyl-rich biochar(FeMn-OH-BC)is synthesized to activate PMS through nonradical-dominated pathways.The as-prepared FeMn-OH-BC exhibits excellent catalytic activity for degrading tetracycline at broad pH conditions ranging from 5 to 9,and about 85.0%of tetracycline is removed in 40 min.Experiments on studying the influences of various anions(HCO_(3)^(−),NO_(3)^(−),and H_(2)PO_(4)^(−))show that the inhibiting effect is negligible,suggesting that the FeMn-OHBC based PMS activation is dominated by nonradical pathways.Electron paramagnetic resonance measurements and quenching tests provide direct evidence to confirm that 1O2 is the major reactive oxygen species generated from FeMn-OH-BC based PMS activation.Theoretical calculations further reveal that the FeMn-OH sites in FeMn-OH-BC are dominant active sites for PMS activation,which have higher adsorption energy and stronger oxidative activity towards PMS than OH-BC sites.This work provides a new route for driving PMS activation by biochar-based transition metal catalysts through nonradical pathways. | Yihui Li Deying Lin Yongfu Li Peikun Jiang Xiaobo Fang Bing Yu | 2023 | Nano Research2023，16，1： | 3 |
| 10 | Insight into the formation mechanism and interaction of matrix/TiB whisker textures and their synergistic effect on property anisotropy in titanium matrix composites显示文摘Considerable studies on processed pure titanium and titanium alloys have proved the possibility of prop-erty anisotropy induced by crystallographic textures,but limited information is available for the intrinsic coupling of matrix and reinforcement textures and their synergistic effect on property anisotropy in tita-nium matrix composite(TMCs).In the present work,an advanced EBSD/EDS coupling method was used to investigate the formation mechanism of primaryαand secondaryαtextures in the matrix alloy.It is revealed for the first time that the reinforcement TiB_(w)displays a{100}<010>texture after hot rolling and has little effect on the matrix texture component but weakens texture intensity.Significant anisotropies in the tensile strength and ductility can be all noted at room and high-temperatures,which is the syn-ergistic effect of the matrix texture and the aligned TiB_(w).The mean Schmid factor of each slip system was calculated to evaluate the influence of matrix texture on the minimum active stress of slip deforma-tion in the different tensile directions.The analysis shows that the strong T-type matrix texture results in higher strength but lower ductility when loaded in the transverse direction.Moreover,a generalized shear-lag model was modified to quantitatively evaluate the strengthening contribution of aligned TiB_(w),which decreases with increasing off-axis angle and test temperature.A new parameter,defined as the critical aspect ratio of the off-axis whisker,was proposed to rationalize why the TiB_(w) failure mechanism converts from TiB_(w) fracture to TiB_(w)/matrix interfacial debonding with increasing off-axis angle and test temperature. | Jianwen Le Yuanfei Han Peikun Qiu Shaopeng Li Guangfa Huang Jianwei Mao Weijie Lu | 2022 | Journal of Materials Science & Technology2022，，15： | 2 |
| 11 | Improved Pretreatment (Coagulation-Floatation and Ozonation) of Younger Landfill Leachate by Microbubbles显示文摘 | Liu Shu Wang Qunhui Zhai Xuedong Huang Qifei Huang Peikun | 2010 | Water Environment Research2010，，7： | 1 |
| 12 | Soil organic carbon accumulation in intensively managed Phyllostachys praecox stands 显示文摘 | ZHOU Guomo ZHUANG Shunyao JIANG Peikun | 2011 | Bot Rev2011，77，3： | 1 |
| 13 | Long-term intensive management increased carbon occluded in phytolith (PhytOC) in bamboo forest soils 显示文摘 | HUANG Zhangting LI Yongfu JIANG Peikun | 2014 | Sci Rep2014，439，： | 1 |
| 14 | Use of the radialvelocity measurement in target tracking 显示文摘 | WANG Jianguo HE Peikun LONG Teng | 2003 | IEEE Transac-tions on Aerospace and Electronic Systems2003，39，2： | 1 |
| 15 | Studies on acetylferrocenylnicotinoyl and its coordinations compounds with transition metals 显示文摘 | ZHANG Hongyun CHEN Dongli CHEN Peikun | 1922 | Polyhedron1922，11，18： | 1 |
| 16 | Dissolved soil organic carbon and nitrogen were affected by conver- sion of native forests to plantations in subtropical China 显示文摘 | WU Jiasen JIANG Peikun CHANG S X et ol | 2010 | Can JSoil Sci2010，90，1： | 1 |
| 17 | Review of carbon fixation in bamboo forests in China显示文摘 | ZHOU Guomo MENG Cifu JIANG Peikun | 2011 | Botanical Review2011，77，3： | 1 |
| 18 | Extended Langmuir equation for correlating multilayer adsorption equilibrium data显示文摘 | Peikun Zhang Li Wang | 2010 | Separation and Purification Technology2010，70，3： | 1 |
| 19 | Dynamics and distribution of nutrition elements in bamboos 显示文摘 | WU Jiasen XU Qiufang JIANG Peikun | 2009 | J Plant Nutr2009，32，3： | 1 |
| 20 | Plant impact on the coupled terrestrial biogeochemical cycles of silicon and carbon: Implications for biogeochemical carbon sequestration显示文摘 | Zhaoliang Song Hailong Wang P. James Strong Zimin Li Peikun Jiang | 2012 | Earth-Science Reviews2012，，4： | 1 |
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