|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Polycyclic aromatic hydrocarbon concentrations, compositions, sources, and associated carcinogenic risks to humans in farmland soils and riverine sediments from Guiyu, China显示文摘The concentrations of 16 priority polycyclic aromatic hydrocarbons(PAHs) were measured in 23 farmland soil samples and 10 riverine sediment samples from Guiyu, China, and the carcinogenic risks associated with PAHs in the samples were evaluated. Guiyu is the largest electronic waste(EW) dismantling area globally, and has been well known for the primitive and crude manner in which EWs are disposed, such as by open burning and roasting. The total PAH concentrations were 56–567 ng/g in the soils and 181–3034 ng/g in the sediments.The Shanglian and Huamei districts were found to be more contaminated with PAHs than the north of Guiyu. The soils were relatively weakly contaminated but the sediments were more contaminated, and sediments in some river sections might cause carcinogenic risks to the groundwater system. The PAHs in the soils were derived from combustion sources,but the PAHs in the sediments were derived from both combustion and petroleum sources. | Pengjun Xu Bu Tao Zhiqiang Ye Hu Zhao Yue Ren Ting Zhang Yeru Huang Jiping Chen | 2016 | Journal of Environmental Sciences2016，28，10： | 8 |
| 2 | Growth Mechanism,Modified Morphology and Optical Properties of Coral-like BaTiO_3 Architecture through CTAB Assisted Synthesis显示文摘Three-dimensional hierarchical structure coral-like BaTiO3 nanoparticles have been self-assembled by a facile one step hydrothermal method. Cetyltrimethyl ammonium bromide(CTAB),Ba(OH)2·8H2O and tetrabutyl titanate have been used as precursors. The prepared Ba TiO3 exhibits cubic perovskite phase at room temperature,and the coral-like architecture is a micro-nano hiberarchy consisted of dendrimer-like structure and trunk-like structure. By adjusting the hydrothermal duration and the precursor substances,a surfactant induced mechanism is proposed to understand the self-assembly process. UV-vis measurement demonstrates that the as-prepared Ba TiO3 nanoparticles exhibit dozens of times overwhelming absorptive character compared to the ordinary nanospheres at ultraviolet band,which is benefited from the coral-like porous framework. Moreover,halogen anions( F,Cl,Br,and I) have been chosen to adjust the coral-like Ba TiO3 physical properties. Results show the halogen doping produces distinct modulation effect on the grain size,UV-vis absorbance and photoluminescence properties of the materials. The coral-like BaTiO3 nanoparticle and its halogen modified ramifications offer significant opportunities to develop nano-laser devices,photon detectors,photocatalyst based on BaTiO3 perovskite materials. | Pengjun Zhao Lei Wang Liang Bian Jinbao Xu Aimin Chang Xinqian Xiong Fanglong Xu Jiaqi Zhang | 2015 | Journal of Materials Science & Technology2015，31，2： | 2 |
| 3 | Occurrence and impact of polychlorinated dibenzo-p-dioxins/dibenzofurans in the air and soil around a municipal solid waste incinerator显示文摘To assess the influence of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans(PCDD/Fs) on the environment in the vicinity of municipal solid waste incinerators(MSWIs), we determined the levels of PCDD/Fs in air and soil samples collected around a MSWI, which is the largest in China. The International Toxicity Equivalency Quantity(I-TEQ) concentrations of PCDD/Fs in air samples were from 0.0300 to 1.03 pg I-TEQ/m^3(0.445–13.6 pg/m^3), with an average of 0.237 pg I-TEQ/m^3, while in soil samples they ranged from 0.520 to 3.40 pg I-TEQ/g(2.41–88.7 pg/g) with an average of1.49 pg I-TEQ/g. The concentrations of PCDD/Fs in air and soil samples were comparable to other areas, and Pe CDFs were the dominant contributors, which was different from stack gas homologue patterns. Multivariate statistical analysis showed that PCDD/Fs emission from the MSWI did not directly affect the profiles of PCDD/Fs in air and soils, so that vehicles and unidentified emission sources should be considered. The daily inhalation levels of PCDD/Fs for children(0.0110 to 0.392 pg I-TEQ/(kg·day) and adults(0.00600 to 0.221 pg I-TEQ/(kg·day) near the MSWI were lower than the tolerable daily intake of 1.00 to 4.00 pg WHO-TEQ/(kg·day), but in winter the values were higher than in summer. These results can be used as basic data for assessing the risk of PCDD/Fs exposure in residents living around this MSWI, and more monitoring programs and studies should be carried out around MSWIs. | Zhiguang Zhou Yue Ren Jiazhi Chu Nan Li Sen Zhen Hu Zhao Shuang Fan Hui Zhang Pengjun Xu Li Qi Shuting Liang Bin Zhao | 2016 | Journal of Environmental Sciences2016，28，6： | 1 |
| 4 | Sustainable Urban Expansion and Transportation in Growing Megacity: Consequences of Urban Sprawl for Mobility on the Urban Fringe of Beijing 显示文摘 | Zhao Pengjun | 2010 | Habitat International2010，34，： | 1 |
| 5 | Conflicts in ur- ban fringe in the Transformation era: An examination of performance of the metropolitan growth Management in Bei- jing 显示文摘 | Pengjun Zhao Bin Lu Johan Woltjer 2008 | 2008 | Habitat International2008，110，： | 1 |
| 6 | The Impact of the Built Environment on Individ- ual Workers' Commuting Behavior in Beijing 显示文摘 | Zhao Pengjun | 2013 | International Journal of Sustainable Transportation2013，7，5： | 1 |
| 7 | Angiotensin1-7 protects cardiomyocytes from hypoxia/reoxygenation-induced oxidative stress by preventing ROS-associated mitochondrial dysfunction and activating the Akt signaling pathway显示文摘 | Pengjun Zhao Fen Li Wei Gao Jing Wang Lijun Fu Yiwei Chen Meirong Huang | 2015 | Acta Histochemica2015，，8： | 1 |
| 8 | Impact of the Jobs-housing Balance on Urban Commuting in Beijing in the Transformation Era显示文摘 | Pengjun Zhao Bin Lü Gert de Roo | | 0，，19： | 1 |
| 9 | Too Complex to Be Managed? New Trends in Peri- Urbanisation and Its Planning in Beijing显示文摘 | Zhao Pengjun | 2013 | Cities2013，30，2： | 1 |
| 10 | Managing urban growth in a transforming China: Evidence from B eijing 显示文摘 | Zhao Pengjun | 2011 | Land Use Policy2011，28，： | 1 |
| 11 | Resilience patterns of human mobility in response to extreme urban floods显示文摘Large-scale disasters can disproportionately impact different population groups,causing prominent disparity and inequality,especially for the vulnerable and marginalized.Here,we investigate the resilience of human mobility under the disturbance of the unprecedented‘720’Zhengzhou flood in China in 2021 using records of 1.32 billion mobile phone signaling generated by 4.35 million people.We find that although pluvial floods can trigger mobility reductions,the overall structural dynamics of mobility networks remain relatively stable.We also find that the low levels of mobility resilience in female,adolescent and older adult groups are mainly due to their insufficient capabilities to maintain business-as-usual travel frequency during the flood.Most importantly,we reveal three types of counter-intuitive,yet widely existing,resilience patterns of human mobility(namely,‘reverse bathtub’,‘ever-increasing’and‘ever-decreasing’patterns),and demonstrate a universal mechanism of disaster-avoidance response by further corroborating that those abnormal resilience patterns are not associated with people’s gender or age.In view of the common association between travel behaviors and travelers’socio-demographic characteristics,our findings provide a caveat for scholars when disclosing disparities in human travel behaviors during flood-induced emergencies. | Junqing Tang Pengjun Zhao Zhaoya Gong Hongbo Zhao Fengjue Huang Jiaying Li Zhihe Chen Ling Yu Jun Chen | 2023 | National Science Review2023，10，8： | 1 |
| 12 | A novel thermophilic xylanase from Achaetomium sp. Xz-8 with high catalytic efficiency and application potentials in the brewing and other industries显示文摘 | Liang Zhao Kun Meng Pengjun Shi Yingguo Bai Huiying Luo Huoqing Huang Yaru Wang Peilong Yang Bin Yao | 2013 | Process Biochemistry2013，，12： | 1 |
| 13 | Conflicts in urban fringe in the Transformation era:An examination of performance of the metropolitan growth Management in Beijing显示文摘 | Pengjun Zhao Bin Lu ohan Woltjer | 2008 | Habitat International2008，32，： | 1 |
| 14 | Revisiting the gravity laws of inter-city mobility in megacity regions显示文摘Inter-city mobility is one of the most important issues in the UN Sustainable Development Goals,as it is essential to access the regional labour market,goods and services,and to constrain the spread of infectious diseases.Although the gravity model has been proved to be an effective model to describe mobility among settlements,knowledge is still insufficient in regions where dozens of megacities interact closely and over 100 million people reside.In addition,the existing knowledge is limited to overall population mobility,while the difference in inter-city travel with different purposes is unexplored on such a large geographic scale.We revisited the gravity laws of inter-city mobility using the 2.12 billion trip chains recorded by 40.48 million mobile phone users’trajectories in the Jing-Jin-Ji Region,which contains China’s capital Beijing.Firstly,unlike previous studies,we found that non-commuting rather than commuting is the dominant type of inter-city mobility(89.3%).Noncommuting travellers have a travel distance 42.3%longer than commuting travellers.Secondly,we developed more accurate gravity models for the spatial distribution of inter-city commuting and non-commuting travel.We also found that inter-city mobility has a hierarchical structure,as the distribution of inter-city travel volume follows Zipf’s law.In particular,the hierarchy of non-commuting travel volume among the cities is more in line with an ideal Zipf distribution than commuting travel.Our findings contribute to new knowledge on basic inter-city mobility laws,and they have significant applications for regional policies on human mobility. | Pengjun ZHAO Haoyu HU Liangen ZENG Jun CHEN Xinyue YE | 2023 | Science China Earth Sciences2023，66，2： | 0 |
| 15 | Synthesis and optical properties of novel Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics for radiation detection applications显示文摘45 P_(2)O_(5)-15 BaO-25 ZnO-15 B2O_(3)glasses doped with different concentrations(0 mol%,0.1 mol%,0.25 mol%,0.5 mol%,and 0.75 mol%)of Gd^(3+)were prepared by a melt-quenching method and treated to fabricate glass-ceramics containing BaZn_(2)(PO_(4))_(2)crystals by controllable crystallization.The structural,optical,and dosimetric properties were investigated.FTIR spectra indicate that the glasses are composed of[PO_(4)],[BO_(3)],and[BO_(4)]basic structural units.The XRD pattern analysis indicates that the samples contain BaZn_(2)(PO_(4))_(2)crystals.In the photoluminesce nce(PL)spectra,two emission bands are observed at 307 and 313 nm due to the^(6)P_(5/2)→^(8)S_(7/2)and^(6)P_(7/2)→^(8)S_(7/2)transitions of Gd^(3+),respectively.The OSL dosimetric properties of glass-ceramics were studied further under beta radiation of90Sr.The optimal Gd^(3+)doping concentration of 0.5 mol%was determined.The fading of the OSL signal shows that the CW-OSL signal of Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics decays by about 58.95%within120 h,and the intensity remains stable thereafter.The thermoluminescence(TL)curve has three peaks at 164,240,and 344℃.Minimum detectable dose(MDD)of the 0.5 mol%Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics was calculated as 0.675 mGy.The samples also exhibit good signal reusability and a broad linear dose-response range(0.3-500 Gy).Results show the excellent dosimetric properties of Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics and their potential application in radiation dosimetry. | Wanli Li Zhaoyang Chen Jie Xu Pengjun Zhao Yanwei Fan Chengfa He | 2022 | Journal of Rare Earths2022，40，12： | 0 |
| 16 | Survey and Prospect for Applying Knowledge Graph in Enterprise Risk Management显示文摘Enterprise risk management holds significant importance in fostering sustainable growth of businesses and in serving as a critical element for regulatory bodies to uphold market order.Amidst the challenges posed by intricate and unpredictable risk factors,knowledge graph technology is effectively driving risk management,leveraging its ability to associate and infer knowledge from diverse sources.This review aims to comprehensively summarize the construction techniques of enterprise risk knowledge graphs and their prominent applications across various business scenarios.Firstly,employing bibliometric methods,the aim is to uncover the developmental trends and current research hotspots within the domain of enterprise risk knowledge graphs.In the succeeding section,systematically delineate the technical methods for knowledge extraction and fusion in the standardized construction process of enterprise risk knowledge graphs.Objectively comparing and summarizing the strengths and weaknesses of each method,we provide recommendations for addressing the existing challenges in the construction process.Subsequently,categorizing the applied research of enterprise risk knowledge graphs based on research hotspots and risk category standards,and furnishing a detailed exposition on the applicability of technical routes and methods.Finally,the future research directions that still need to be explored in enterprise risk knowledge graphs were discussed,and relevant improvement suggestions were proposed.Practitioners and researchers can gain insights into the construction of technical theories and practical guidance of enterprise risk knowledge graphs based on this foundation. | Pengjun Li Qixin Zhao Yingmin Liu Chao Zhong Jinlong Wang Zhihan Lyu | 2024 | Computers, Materials & Continua2024，78，3： | 0 |
| 17 | Double Mutational Salp Swarm Algorithm:From Optimal Performance Design to Analysis显示文摘The Salp Swarm Algorithm(SSA)is a population-based Meta-heuristic Algorithm(MA)that simulates the behavior of a group of salps foraging in the ocean.Although the basic SSA has stable exploration capability and convergence speed,it still can fall into local optimum when solving complex optimization problems,which may be due to low utilization of population information and unbalanced exploration-to-exploitation ratio.Therefore,this study proposes a Double Mutation Salp Swarm Algorithm(DMSSA).In this study,a Cuckoo Mutation Strategy(CMS)and an Adaptive DE Mutation Strategy(ADMS)are introduced into the structure of the original SSA.The former mutation strategy is summarized as three basic operations:judgment,shuffling,and mutation.The purpose is to fully consider the information among search agents and use the differences between different search agents to participate in the update of positions,making the optimization process both diverse in exploration and minor in randomness.The latter strategy employs three basic operations:selection,mutation,and adaptation.As the follower part,some individuals do not blindly adopt the original follow method.Instead,the global optimal position and differences are considered,and the variation factor is adjusted adaptively,allowing the new algorithm to balance exploration,exploitation,and convergence efficiency.To evaluate the performance of DMSSA,comparisons are made with numerous algorithms on 30 IEEE CEC2014 benchmark functions.The statistical results confirm the better performance and significant difference of DMSSA in solving benchmark function tests.Finally,the applicability and scalability of DMSSA to optimization problems with constraints are further confirmed in three experiments on classical engineering design optimization problems.The source code of the proposed algorithm will be available at:http://gffzz188fe103f8f1460asxfv6cvqu6fpx6cf9.ffgz.tsg.suse.edu.cn/ncjsq/Double-Mutational-Salp-Swarm-Algorithm. | Chao Lin Pengjun Wang Xuehua Zhao Huiling Chen | 2023 | Journal of Bionic Engineering2023，20，1： | 0 |
| 18 | 3-1 Probing the Geometry of Ar2N2 Cluster by Heavy Ions Impact显示文摘The molecular complexes play an important role in planet’s atmosphere and chemical reactions of astrophysics.The investigation of geometry configurations for molecular complexes is an important subject both in experimental and theoretical aspects.As a prototype molecular system,the investigation of geometry configuration of van der Waals cluster Ar2N2 attracts considerable attention recently.The different equilibrium configurations of Ar2N2 cluster were reported by experiments as linear conformation[1;2]and theoretical calculations as linear or spatial X-shaped conformations[3-6]. | Zhu Xiaolong Yan Shuncheng Feng Wentian Guo Dalong Gao Yong Zhang Ruitian Zhang Shaofeng Wang Hanbing Huang Zhongkui Zhang Min Hai Bang Zhao Dongmei Wen Weiqiang Zhang Pengjun Qian Dongbin Ma Xinwen | 2016 | IMP & HIRFL Annual Report2016，，1： | 0 |
| 19 | Repurposing EV Batteries for Storing Solar Energy显示文摘1.Introduction Carbon neutrality has emerged as a global goal due to its pivotal role in addressing the challenges of global climate change.Before the United Nations Climate Summit was held in November 2020,124 countries promised to reach net-zero emissions[1].Solar energy is one of the important renewable energy sources that significantly curtail carbon emissions originating from fossil fuels. | Jinyu Chen Haoran Zhang Pengjun Zhao Zhiheng Chen Jinyue Yan | 2023 | Engineering2023，，10： | 0 |
| 20 | A Boosted Communicational Salp Swarm Algorithm: Performance Optimization and Comprehensive Analysis显示文摘The Salp Swarm Algorithm (SSA) is a recently proposed swarm intelligence algorithm inspired by salps, a marine creature similar to jellyfish. Despite its simple structure and solid exploratory ability, SSA suffers from low convergence accuracy and slow convergence speed when dealing with some complex problems. Therefore, this paper proposes an improved algorithm based on SSA and adds three improvements. First, the Real-time Update Mechanism (RUM) underwrites the role of ensuring that excellent individual information will not be lost and information exchange will not lag in the iterative process. Second, the Communication Strategy (CMS), on the other hand, uses the multiplicative relationship of multiple individuals to regulate the exploration and exploitation process dynamically. Third, the Selective Replacement Strategy (SRS) is designed to adaptively adjust the variance ratio of individuals to enhance the accuracy and depth of convergence. The new proposal presented in this study is named RCSSSA. The global optimization capability of the algorithm was tested against various high-performance and novel algorithms at IEEE CEC 2014, and its constrained optimization capability was tested at IEEE CEC 2011. The experimental results demonstrate that the proposed algorithm can converge faster while obtaining better optimization results than traditional swarm intelligence and other improved algorithms. The statistical data in the table support its optimization capabilities, and multiple graphs deepen the understanding and analysis of the proposed algorithm. | Chao Lin Pengjun Wang Ali Asghar Heidari Xuehua Zhao Huiling Chen | 2023 | Journal of Bionic Engineering2023，20，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员