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Influence of microwave treatment under a hydrogen or methane atmosphere on the flotability of the macerals in Shenfu coals

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Mining Science and Technology 2011年第6期21卷 761-766页

作者： Zhao wei Yang fusheng Li Yuangang Qu Jianlin Zhou Anning College of Chemistry and Chemical Engineering Xi＇an University of Science and Technology Xi＇an 710054 China

The modification of Shenfu coals by a microwave treatment carried out under a hydrogen or a methane atmosphere, and the subsequent maceral separation by flotation, are described in this paper. The surface contact angle and the Zeta potential of the coal macerals were measured both with and without the treat- ment. The results show that the surface wettability of SFF (Shenfu Fusain) and SFV (Shenfu Vitrain) can be changed by the microwave treatment. An increase in the difference in surface wettability of SFF and SFV causes in a subsequent increase in the enrichment of inertinite and vitrinite. The results of the Zeta potential measurements show that the surface potentials of SFF and SFV are also changed by the treatment.

关键词： Microwave Modification Maceral Flotation

Selective separation of polychlorinated naphthalene (PCNs), hexabromocyclododecanes (HBCDs) and tetrabromobisphenol A (TBBPA) in soil matrices

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Chinese Science Bulletin 2013年第4期58卷 500-506页

作者： TENG Man JIN Jing FU Qiang CAI YaQi CHEN JiPing wei fusheng Research Center for Eco-Environmental Sciences Chinese Academy of Sciences China National Environmental Monitoring Center Dalian Institute of Chemical Physics Chinese Academy of Sciences

A method for the selective separation of polychlorinated naphthalene (PCNs), hexabromocyclododecanes (HBCDs) and tetrabro-mobisphenol A (TBBPA) in complex matrices was developed. In the present study, the type of sorbents and the volume and composition of eluting solvents were investigated in detail. Under the optimal conditions, the recoveries of PCNs, HBCDs and TBBPA in different fractions were determined with liquid/gas chromatography tandem mass spectrometry (LC or GC-MS/MS), which was nearly close to 100%. To investigate the feasibility of the developed method, it was applied to isolate target compounds from spiked soil extracts. PCNs, HBCDs and TBBPA could be subsequently eluted with hexane, hexane/dichloromethane (1:1), and hexane/dichloromethane (1:3), and the recoveries of the analysts from three fractions were satisfactory (70.9%-107%) with the exception of -HBCD at low levels. The results indicated that the method exhibited good performance for the selective separation of PCNs, HBCDs and TBBPA and showed great potential in sample pretreatment in terms of alleviating influence from different class of impurities to some extent.

关键词：选择性分离四溴双酚A 矩阵A 氯化土壤四溴双酚-A 六溴环十二烷萘

Irrigation-induced pollution of organochlorine pesticides and polychlorinated biphenyls in paddy field ecosystem of Liaohe River Plain,China

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Chinese Science Bulletin 2013年第15期58卷 1751-1759页

作者： TENG Man ZHANG HaiJun FU Qiang LU XianBo CHEN JiPing wei fusheng Research Center for Eco-Environmental Sciences Chinese Academy of Sciences State Environmental Protection Key Laboratory for Quality Control of Environmental Monitoring China National Environmental Monitoring Center Dalian Institute of Chemical Physics Chinese Academy of Sciences

In order to assess the influence of long-term irrigation of polluted river water on the ecological health of the rice fields in the low reach of Liaohe River Plain,a series of environmental samples and biological samples in rice fields,including sediments,paddy soils,mitten-handed crabs(Eriocheir sinensis),loaches(Misgurnus anguillicaudatu) and frog(Hoplobatrachus tigerinus),were collected from the area far away from industrial zones,and polychlorinated biphenyls(PCBs) and organochlorine pesticides(HCH,DDT,HCB and Mirex) were analyzed by high resolution gas chromatography coupled with high resolution mass spectrometry(HRGC/HRMS).The comparison of pollutant concentrations and profiles verified that the significant contribution of river water irrigation to PCBs contaminations in paddy soils and the mutual influence of organochlorine pesticide contamination between river sediments and paddy *** of PCBs and organochlorine pesticides in mitten-handed crabs and loaches were site-specific,suggested that they were both the good indicators of ecosystem ***-handed crabs had the highest capacity to accumulate PCBs and organochlorine pesticides,and also they had the strong ability to degrade these pollutants in their bodies,especially for DDT and *** biota-soil accumulation factors(BSAF) of ΣH CH,ΣDDT,Mirex,HCB and ΣP CBs in mitten-handed crab were calculated to be 24.5,15.3,122.2,28.1 and 54.6,*** view of the strong bioaccumulation ability,the health risk should be concerned for the cultivation of mitten-handed crabs in paddy fields in the low reach of Liaohe River Plain.

关键词：有机氯农药污染稻田生态系统多氯联苯辽河平原苯污染灌溉中华绒螯蟹河流沉积物

Primary investigation of the pollution status of polycyclic aromatic hydrocarbons (PAHs) in water and soil of Xuanwei and Fuyuan,Yunnan Province,China

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Chinese Science Bulletin 2009年第19期54卷 3528-3535页

作者： LU JunGang XU RenJi ZHANG QingHua LIU JiYan LIAO ChunYang wei fusheng State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China National Environmental Monitoring Center Beijing 100029 China

Lung cancer incidence in Xuanwei and Fuyuan is extremely high. The air pollution, especially indoor airborne PAHs generated by burning smoky coals, has been considered as the most probable reason. The air pollution may affect drinking water and soil through dry and wet deposition. In this study, the concentrations of PAHs in water and soil samples from Xuanwei and Fuyuan were monitored to investigate the influence of atmospheric PAHs pollution on water and soil. No obvious PAHs pollution in water was found in these two areas, indicating that airborne PAHs have no apparent effect on the drinking water (well water). The smoky coal combustion from household and industry, such as the activities related to power plants, coking plants and chemical industries, is responsible for the soil PAHs pollution in these two areas. The soil pollution might be the reemission source and would pose long-term threat to the local environment and health of residents.

关键词：土壤污染环境污染居民健康状态 PAHs

Self-doped Br in Bi_(5)O_(7)Br ultrathin nanotubes:Efficient photocatalytic NO purification and mechanism investigation

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Chinese Chemical Letters 2022年第6期33卷 3161-3166页

作者： Ping Yan Qin Ren Fengyi Zhong Jieyuan Li fusheng wei Jianjun Li Xian Shi Fan Dong College of Architecture and Environment Sichuan UniversityChengdu 610065China Yangtze Delta Region Institute(Huzhou)&Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaHuzhou 313001China State Centre for International Cooperation on Designer Low carbon and Environmental Materials(CDLCEM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001 China

Bismuth-rich Bi_(5)O_(7)Br is a promising photocatalyst for pollutant removal owing to its stability and appropriate band structure in comparison with bismuth ***,bulk-phase Bi_(5)O_(7)Br suffers from poor light absorption and high charge recombination rates resulting in poor *** doping is a powerful strategy to enhance photocatalytic *** this study,we prepared a series of Br autodoped ultrathin Bi_(5)O_(7)Br nanotubes and explored the effect of Br doping on photocatalytic NO *** optimal doping content was determined via a photocatalytic NO removal experiment,which revealed the optimal ratio of Bi and Br was approximately 3:*** situ diffuse reflectance infrared Fourier transform spectroscopy(In situ DRIFT)and density functional theory(DFT)studies revealed that NO removal mechanism catalyzed by Br doped Bi_(5)O_(7)*** work presents a new strategy for the enhancement of photocatalytic pollutant degradation by bismuth oxyhalide photocatalysts.

关键词： Bi_(5)O_(7)Br Br auto-doped Photocatalytic no removal DFT In situ DRIFT

Pd nanoparticles on defective polymer carbon nitride:Enhanced activity and origin for electrocatalytic hydrodechlorination reaction

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Chinese Chemical Letters 2020年第10期31卷 2762-2768页

作者： Song Shu Peng Wang Wendong Zhang weilu Wang Jianjun Li Yinghao Chu fusheng wei Xianming Zhang Guangming Jiang College of Architecture and Environment Sichuan UniversityChengdu 610065China Engineering Research Center for Waste Oil Recovery Technology and Equipment Ministry of EducationChongqing Technology and Business UniversityChongqing 400067China Chongqing Key Laboratory of Three Gorges Reservoir Area Surface Process and Environmental Remote Sensing Chongqing Key Laboratory of Inorganic Functional MaterialsChongqing Normal UniversityChongqing 401331China

Here we report a facile defect-engineering strategy on the support to optimize the metal-support interaction and enhance the metal’s electrocatalytic hydrodechlo rination perfo rmance in converting 2,4-dichlorophenol(2,4-DCP)to *** specific activity of the Pd nanoparticles(Pd NPs)on defective polymer carbon nitride(Pd/PCN-x)reaches 0.09 min^(-1) m^-2Pd,which is 1.5 times that of the Pd NPs supported on the perfect PCN(Pd/PCN-0).The combined experimental and theoretical results demonstrate that the strong adsorption of phenol on Pd/PCN-0 passivates the active sites,limiting the dechlorination *** PCN-x containing-C≡N defects can effectively mediate the spatial configuration and electronic structure of Pd NPs,and promote the preferential adsorption of 2,4-DCP rather than phenol,resulting in an enhanced dechlorination efficiency.

关键词： Hydrodechlorination Electrocatalysis Adsorption properties Metal-support interaction N defects

Reinforcement Learning Navigation for Robots Based on Hippocampus Episode Cognition

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Journal of Bionic Engineering 2024年第1期21卷 288-302页

作者： Jinsheng Yuan wei Guo Zhiyuan Hou fusheng Zha Mantian Li Pengfei Wang Lining Sun State Key Laboratory of Robotics and System Harbin Institute of Technology(HIT)Harbin 150001China Shenzhen Academy of Aerospace Technology Shenzhen 518057China School of Mechanical and Electrical Engineering Lanzhou University of TechnologyLanzhou 730050China

Artificial intelligence is currently achieving impressive success in all ***,autonomous navigation remains a major challenge for *** learning is used for target navigation to simulate the interaction between the brain and the environment at the behavioral level,but the Artificial Neural Network trained by reinforcement learning cannot match the autonomous mobility of humans and *** hippocampus–striatum circuits are considered as key circuits for target navigation planning and *** paper aims to construct a bionic navigation model of reinforcement learning corresponding to the nervous system to improve the autonomous navigation performance of the *** ventral striatum is considered to be the behavioral evaluation region,and the hippocampal–striatum circuit constitutes the position–reward *** this paper,a set of episode cognition and reinforcement learning system simulating the mechanism of hippocampus and ventral striatum is constructed,which is used to provide target guidance for the robot to perform autonomous *** with traditional methods,this system reflects the high efficiency of learning and better Environmental *** research is an exploration of the intersection and fusion of artificial intelligence and neuroscience,which is conducive to the development of artificial intelligence and the understanding of the nervous system.

关键词： Episode cognition Reinforcement learning Hippocampus Robot navigation

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广西民族研究 2007年第3期 197-205页

作者：韦复生广西民族大学商学院副教授南宁530007

旅游社区居民在旅游发展过程中扮演着非常重要的角色。空间的紧密性、资源的互动性使旅游社区居民在旅游社区发展建设的许多方面都处于主体地位。本文以桂林市"印象刘三姐"实景式演出中将当地居民看作旅游社区的重要利益主体,并以其为... 详细信息

旅游社区居民在旅游发展过程中扮演着非常重要的角色。空间的紧密性、资源的互动性使旅游社区居民在旅游社区发展建设的许多方面都处于主体地位。本文以桂林市"印象刘三姐"实景式演出中将当地居民看作旅游社区的重要利益主体,并以其为视角中心,结合利益主体理论和社区参与理论,探讨旅游社区居民与相关利益相关者的博弈关系,分析多方利益主体间的冲突类型和引发冲突的因素,提出了冲突的解决范式和实施步骤。

关键词：多元利益主体冲突类型博弈关系解决办法

耦合与创新：民族文化创意与区域旅游发展--西部民族地区经济结构调整与发展的新视角

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广西民族研究 2011年第1期 174-179页

作者：韦复生广西百色学院副院长、教授广西百色533000

西部民族地区由于生态的脆弱性,经济结构的二元化特征,客观上要求在产业结构调整中,要减少资源性经济过渡增长。作为文化资源的富集区,民族文化创意与区域旅游发展的耦合与创新及利用民族文化不可复制的文化特征,是西部民族地区追赶的... 详细信息

西部民族地区由于生态的脆弱性,经济结构的二元化特征,客观上要求在产业结构调整中,要减少资源性经济过渡增长。作为文化资源的富集区,民族文化创意与区域旅游发展的耦合与创新及利用民族文化不可复制的文化特征,是西部民族地区追赶的潜在优势。

关键词：民族文化创意产业耦合