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| 1 | Immobilization of Lead and Cadmium in Contaminated Soil Using Amendments: A Review显示文摘Since the inception of industrial revolution, metal refining plants using pyrometallurgical processes have generated the prodigious emissions of lead(Pb) and cadmium(Cd). As the core target of such pollutants, a large number of soils are nowadays contaminated over widespread areas, posing a great threat to public health worldwide. Unlike organic pollutants, Pb and Cd do not undergo chemical or microbial breakdown and stay likely in site for longer duration after their release. Immobilization is an in-situ remediation technique that uses cost-effective soil amendments to reduce Pb and Cd availability in the contaminated soils. The Pb and Cd contamination in the soil environment is reviewed with focus on source enrichment, speciation and associated health risks, and immobilization options using various soil amendments. Commonly applied and emerging cost-effective soil amendments for Pb and Cd immobilization include phosphate compounds, liming, animal manure, biosolids, metal oxides, and biochar. These immobilizing agents could reduce the transfer of metal pollutants or residues to food web(plant uptake and leaching to subsurface water) and their long-term sustainability in heavy metal fixation needs further assessment. | Amanullah MAHAR WANG Ping LI Ronghua ZHANG Zengqiang | 2015 | Pedosphere2015，25，4： | 56 |
| 2 | A novel m6A reader Prrc2a controls oligodendroglial specification and myelination显示文摘While N6-methyladenosine (m6A), the most abundant internal modification in eukaryotic mRNA, is linked to cell differentiation and tissue development, the biological significance of m6A modification in mammalian glial development remains unknown. Here, we identify a novel m6A reader, Prrc2a (Proline rich coiled-coil 2A), which controls oligodendrocyte specification and myelination. Nestin-Cre-mediated knockout of Prrc2a induces significant hypomyelination, decreased lifespan, as well as locomotive and cognitive defects in a mouse model. Further analyses reveal that Prrc2a is involved in oligodendrocyte progenitor cells (OPCs) proliferation and oligodendrocyte fate determination. Accordingly, oligodendroglial-lineage specific deletion of Prrc2a causes a similar phenotype of Nestin-Cre-mediated deletion. Combining transcriptome-wide RNA-seq, m6A-RIP-seq and Prrc2a RIP-seq analysis, we find that Olig2 is a critical downstream target gene of Prrc2a in oligodendrocyte development. Furthermore, Prrc2a stabilizes Olig2 mRNA through binding to a consensus GGACU motif in the Olig2 CDS (coding sequence) in an m6A-dependent manner. Interestingly, we also find that the m6A demethylase, Fto, erases the m6A modification of Olig2 mRNA and promotes its degradation. Together, our results indicate that Prrc2a plays an important role in oligodendrocyte specification through functioning as a novel m6A reader. These findings suggest a new avenue for the development of therapeutic strategies for hypomyelination-related neurological diseases. | Rong Wu Ang Li Baofa Sun Jian-Guang Sun Jinhua Zhang Ting Zhang Yusheng Chen Yujie Xiao Yuhao Gao Qingyang Zhang Jun Ma Xin Yang Yajin Liao Wei-Yi Lai Xiaolong Qi Shukun Wang Yousheng Shu Hai-Lin Wang Fengchao Wang Yun-Gui Yang Zengqiang Yuan | 2019 | Cell Research2019，29，1： | 32 |
| 3 | Use of Biochar as an Amendment for Remediation of Heavy Metal-Contaminated Soils:Prospects and Challenges显示文摘Biochar(BC), known as the new black gold, is a stable, novel carbonaceous by-product that is synthesized through pyrolysis of biological materials in the absence of O_2.Recently, an emerging interest in the application of BC as a robust soil amendment has given rise to a broad research area in science and technology.It is considered a promising remediation option for heavy metal(HM)-contaminated soils to reduce HM bioavailability to plants.Remediation efficacy of BC depends on the porosity, composition,pyrolysis temperature, feedstock, and residence time of pyrolysis.This review article aimed to present an overview of BC use in the immobilization of HMs, i.e., Cd, As, Pb, Zn, Ni, Cu, Mn, Cr, and Sb, in contaminated soils.The remaining uncertain factors, including the specific soil HM immobilization mechanisms, long-term beneficial effects, and potential environmental risks associated with BC application are analyzed.Future research must be conducted to ensure that the management of environmental pollution is in accord with ecological sustainability and adaptation of the black gold biotechnology on a commercial basis for immobilization of HMs in contaminated soils. | Altaf Hussain LAHORI GUO Zhanyu ZHANG Zengqiang LI Ronghua Amanullah MAHAR Mukesh Kumar AWASTHI SHEN Feng Tanveer Ali SIAL Farhana KUMBHAR WANG Ping JIANG Shuncheng | 2017 | Pedosphere2017，27，6： | 28 |
| 4 | Rock burst mechanism analysis in an advanced segment of gob-side entry under different dip angles of the seam and prevention technology显示文摘In order to investigate the frequent occurrences of rock burst in gob-side entry during the mining process of the mining zone No. 7, the mechanical model of main roof of fully-mechanized caving mining before breaking was established by the Winkler foundation beam theory, and the stress evolution law of surrounding rock with different dip angles of the seam during the mining process was analyzed by using FLAC3 D. The results show that: with the dip angle changing from 45° to 0°, the solid-coal side of gobside entry begins to form an L-shaped stress concentration zone at a dip angle of 30°, and the stress concentration degree goes to higher and higher levels. However, the stress concentration degree of the coalpillar side goes to lower and lower levels; the influence range and peak stress of the abutment at the lateral strata of adjacent gob increase with dip angle decreasing and reach a maximum value at a dip angle of 0°, but the tailgate is not affected; the abutment pressure superposition of two adjacent gobs leads to stress concentration further enhancing in both sides of gob-side entry. With the influence of strong mining disturbance, rock burst is easily induced by dynamic and static combined load in the advanced segment of gob-side entry. To achieve stability control similar to that in the roadway, the key control strategy is to reinforce surrounding rock and unload both sides. Accordingly, the large-diameter drilling and high-pressure water injection combined unloading and reinforced support cooperative control technology was proposed and applied in field test. The results of Electromagnetic Emission(EME) and field observation showed that unloading and surrounding rock control effect was obvious. | Yang Zengqiang Liu Chang Tang Shichuan Dou Linming Cao Jinglong | 2018 | International Journal of Mining Science and Technology2018，28，6： | 24 |
| 5 | Dynamic Prediction Method of Production Logistics Bottleneck Based on Bottleneck Index显示文摘In modern manufacturing pattern,there are many uncertain factors in the modern manufacturing process,such as changes of product attribute,changes of manufacturing resources' state,and so on,which cause production logistics bottleneck frequently shift,and make decisions of production planning and control based on formed bottleneck deviated from practical production process.Considering these factors,present researches mainly apply afterwards control to optimize production process to passively adapt to bottleneck changes.If the direction of bottleneck shifting can be accurately forecasted,the transition from afterwards control of chasing bottleneck to beforehand control can be realized.Therefore,aiming at the phenomenon of production logistics bottleneck shifting under uncertain manufacturing circumstances,this paper starts off with dynamic property of capability and requirement and then builds the concepts of bottleneck degree and bottleneck index to describe dynamic bottleneck characteristic of production unit;taken production capability,production load and quality assurance capability into consideration,mathematical model of bottleneck index is established to measure bottleneck degree accurately,consequently,quantitative research on mechanism of production logistics shifting is achieved.Based on bottleneck index,the prediction model of production logistics bottleneck is founded to predict dynamic change of bottleneck accurately.Finally,an example of forecasting and monitoring the production logistics bottleneck in one manufacturing shop is given to testify the validation and practicability of the prediction method. | LIU Mingzhou TANG Juan GE Maogen JIANG Zengqiang HU Jing LING Lin | 2009 | Chinese Journal of Mechanical Engineering2009，22，5： | 22 |
| 6 | Active disturbance rejection control on first-order plant显示文摘Conventional PI control encounters some problems when dealing with large lag process in the presence of parameter uncertainties.For the typical first-order process,an observerbased linear active disturbance rejection control(LADRC) scheme is presented to cope with the difficulties,and a reduced-order observer scheme is proposed further.Some quantitative dynamic results with regard to non-overshoot characteristics are obtained.Finally,the performance boundaries of LADRC and PI control are explicitly compared with each other,which shows that the former is more superior in most cases. | Ruiguang Yang Mingwei Sun Zengqiang Chen | 2011 | Journal of Systems Engineering and Electronics2011，22，1： | 20 |
| 7 | Application of high-pressure water jet technology and the theory of rock burst control in roadway显示文摘This paper puts forward using high-pressure water jet technology to control rock burst in roadway, and analyzes the theory of controlling rock burst in roadway by the weak structure zone model. The weak structure zone is formed by using high-pressure water jet to cut the coal wall in a continuous and rotational way. In order to study the influence law of weak structure zone in surrounding rock, this paper numerically analyzed the influence law of weak structure zone, and the disturbance law of coal wall and floor under dynamic and static combined load. The results show that when the distance between high-pressure water jet drillings is 3 m and the diameter of drilling is 300 mm, continuous stress superposition zone can be formed. The weak structure zone can transfer and reduce the concentrated static load in surrounding rock, and then form distressed zone. The longer the high-pressure water jet drilling is, the larger the distressed zone is. The stress change and displacement change of non-distressed zone in coal wall and floor are significantly greater than that of distressed zone under dynamic and static combined load. And it shows that the distressed zone can effectively control rock burst in roadway under dynamic and static combined load. High-pressure water jet technology was applied in the haulage gate of 250203 working face in Yanbei Coal Mine, and had gained good effect. The study conclusions provide theoretical foundation and a new guidance for controlling rock burst in roadway. | Yang Zengqiang Dou Linming Liu Chang Xu Mengtang Lei Zhen Yao Yahu | 2016 | International Journal of Mining Science and Technology2016，26，5： | 18 |
| 8 | Epidemic spreading behavior in local-world evolving networks显示文摘The susceptible-infected-susceptible(SIS)epidemic model is presented which can be used to study the epidemic spreading behavior in the local-world evolving network model.Local-world evolving model displays a transition from the exponential network to the scale-free network with respect to the connectivity distribution.From theoretical analyses and numerical simulations,we find that the epidemic spreading behavior on local-world networks also takes on some kind of transitional behaviors.The transitional behavior is further ver-ified by comparing the spreading behavior of local-world network with that of random and scale-free networks.Some feasible control strategies are also proposed to keep from the epidemic spreading on networks. | Chengyi Xia Zhongxin Liu Zengqiang Chen Shiwen Sun Zhuzhi Yuan | 2008 | Progress in Natural Science:Materials International2008，18，6： | 17 |
| 9 | EVENT-TRIGGERED AVERAGE-CONSENSUS OF MULTI-AGENT SYSTEMS WITH WEIGHTED AND DIRECT TOPOLOGY显示文摘这份报纸与直接、加权的拓扑学调查多代理人系统的平均一致的问题。被触发事件的控制法律被采用以便减少自从代理人可以是在许多真实系统的资源有限,更新的单个控制的频率。事件被触发的分离时间片刻被扳机功能关于某个测量错误决定。一个集中的平均一致的协议与固定相互作用拓扑学,稳定性和哪个也被分析的影响因素为网络首先被建议。为有可变拓扑学的网络的扳机函数的设计也被讨论。然后,结果被扩大到分散的对应物,代理人在要求仅仅他们的邻居的信息。数字例子也是如果表明理论结果的有效性。 | Zhongxin LIU Zengqiang CHEN Zhuzhi YUAN | 2012 | Journal of Systems Science & Complexity2012，25，5： | 15 |
| 10 | Mitochondrial calcium uniporter protein MCU is involved in oxidative stress-induced cell death显示文摘Mitochondrial 钙 uniporter (MCU ) 是在在真核细胞的房间的 mitochondrial 的保存 Ca 2+ transporter。然而,在氧化导致压力的房间死亡的 MCU 蛋白质的角色仍然保持不清楚。这里,我们证明宫外地表示的 MCU 是在局部性的 mitochondrial HeLa 和主要小脑的小粒神经原(CGN ) 。内长的 MCU 减少 mitochondrial Ca 2+ 举起追随者组织安刺激击倒并且稀释氧化应力在 HeLa 房间和 CGN 导致的房间死亡。我们也发现 MCU 与 VDAC1 交往并且调停在 CGN 的 VDAC1 导致 overexpression 的房间死亡。这发现证明那 MCU-VDAC1 建筑群调整 mitochondrial Ca 2+ 举起和氧化导致压力的 apoptosis,它可能表示为氧化应力的治疗学的目标联系了疾病。 | Yajin Liao Yumin Hao Hong Chen Qing He Zengqiang Yuan Jinbo Cheng | 2015 | Protein & Cell2015，6，6： | 12 |
| 11 | A Nosocomial COVID-19 Outbreak Initiated by an Infected Dockworker at Qingdao City Port-Shandong Province, China, October, 2020显示文摘On October 10,2020,3 cases of coronavirus disease 2019(COVID-19)were detected via routine preadmission nucleic acid screening of inpatients and their visitors at Qingdao Central Hospital.The 3 cases were all related to the Qingdao Chest Hospital.An additional 9 cases were discovered and confirmed through tracing and testing contacts of the 3 initial cases.Viral isolates from all 12 cases were found to have high degrees of genetic homology with the viral isolate from a dockworker at Qingdao Port,referred to as Patient A in this report.A joint investigation team was formed to determine the source of infection and the scale of the outbreak,and to prevent further spread of the virus. | Qun Yuan Zengqiang Kou Fachun Jiang Zhongjie Li Lijie Zhang Huihui Liu Xiang Zhao Dianmin Kang Ruqin Gao Jie Lei | 2020 | China CDC weekly2020，2，43： | 12 |
| 12 | Semi-tensor product approach to controllability and stabilizability of finite automata显示文摘Using semi-tensor product of matrices, the controllability and stabilizability of finite automata are investigated. By expressing the states, inputs, and outputs in vector forms, the transition and output functions are represented in matrix forms.Based on this algebraic description, a necessary and sufficient condition is proposed for checking whether a state is controllable to another one. By this condition, an algorithm is established to find all the control sequences of an arbitrary length. Moreover, the stabilizability of finite automata is considered, and a necessary and sufficient condition is presented to examine whether some states can be stabilized. Finally, the study of illustrative examples verifies the correctness of the presented results/algorithms. | Yongyi Yan Zengqiang Chen Zhongxin Liu | 2015 | Journal of Systems Engineering and Electronics2015，26，1： | 12 |
| 13 | Modeling and analysis of colored petri net based on the semi-tensor product of matrices显示文摘This paper applies the model petri net method based on the semi-tensor product of matrices to colored petri net. Firstly, we establish the marking evolution equation for colored petri net by using the semitensor product of matrices. Then we define the concept of controllability and the control-marking adjacency matrix for colored petri net. Based on the marking evolution equation and control-marking adjacency matrix, we give the necessary and sufficient condition of reachability and controllability for colored petri net. The algorithm to verify the reachability of colored petri net is given, and we analyze the computational complexity of the algorithm. Finally, an example is given to illustrate the effectiveness of the proposed theory. The significance of the paper lies in the application of the model petri net method based on the semitensor product of matrices to colored petri net. This is a convenient way of verifying whether one marking is reachable from another one as well as finding all firing sequences between any two reachable markings.Additionally, the method lays the foundations for the analysis of other properties of colored petri net. | Jiantao ZHAO Zengqiang CHEN Zhongxin LIU | 2018 | Science China(Information Sciences)2018，61，1： | 12 |
| 14 | Mechanism of rock burst caused by fracture of key strata during irregular working face mining and its prevention methods显示文摘To study the occurrence mechanism of rock burst during mining the irregular working face,the study took irregular panel 7447 near fault tectonic as an engineering background.The spatial fracture characteristic of overlying strata was analyzed by Winkler elastic foundation beam theory.Furthermore,the influence law of panel width to suspended width and limit breaking span of key strata were also analyzed by thin plate theory.Through micro-seismic monitoring,theoretical analysis,numerical simulation and working resistance of support of field measurement,this study investigated the fracture characteristic of overlying strata and mechanism of rock burst in irregular working face.The results show that the fracture characteristic of overlying strata shows a spatial trapezoid structure,with the main roof being as an undersurface.The fracture form changes from vertical‘‘O-X'type to transverse‘‘O-X'type with the increase of trapezoidal height.From the narrow mining face to the wide mining face,the suspended width of key strata is greater than its limit breaking width,and a strong dynamic load is produced by the fracture of key strata.The numerical simulation and micro-seismic monitoring results show that the initial fracture position of key strata is close to tailgate 7447.Also there is a high static load caused by fault tectonic.The dynamic and static combined load induce rock burst.Accordingly,a cooperative control technology was proposed,which can weaken dynamic load by hard roof directional hydraulic fracture and enhance surrounding rock by supporting system. | Zengqiang Yang Chang Liu Hengzhong Zhu Fuxing Xie Linming Dou Jianhang Chen | 2019 | International Journal of Mining Science and Technology2019，29，6： | 12 |
| 15 | High precision topographic data on Lop Nor basin's Lake 'Great Ear' ? and the timing of its becoming a dry salt lake显示文摘High precision elevation measurements using DGPS were carried out along three representative tran- sects for the 'Great Ear' area, a dry salt lake within the Lop Nor basin. Results indicate that the Lop Nor basin is only 5.2 m deep and its lowest point occurs at the center of the 'Great Ear'. In addition, the basin is asymmetric - steeper in the southwest (0.19‰) and gentler in the northeast (0.09‰). Points along the same 'Great Ear' ring were found to have an identical elevation value, but different when from different ones (lower towards the center). The spacing of the 'Great Ear' rings was found to be closely related with the surface steepness. The closer the 'Great Ear' rings are spaced, the steeper the ground surface, and vice versa. These findings support the argument that the 'Great Ear' rings are the former shoreline trails left behind by Lop Nor water during the last few episodes of recession towards its total dry up. A comprehensive analysis of the high precision elevation data, historical accounts, aerial and satellite photographs and imagery, and official topographic maps of the study area suggests that the 'Great Ear' area in the Lop Nor basin was incorrectly mapped as being covered by a great body of water on the 1963 topographic maps. A re-interpretation of the 1958 aerial photographs and newer remote sensing imagery indicated that the 'Great Ear' ring structure was already in place in 1958 and it continued to appear on the subsequent remote sensing data without any major changes. It is estimated that lake water in the 'Great Ear' area of the Lop Nor basin disappeared between the late 1930s and early 1940s. | LI BaoGuo MA LiChun JIANG PingAn DUAN ZengQiang SUN DanFeng QIU HongLie ZHONG JunPing WU HongQi | 2008 | Chinese Science Bulletin2008，53，6： | 11 |
| 16 | Dynamic spreading behavior of homogeneous and heterogeneous networks显示文摘传播在上的 dynsmic 流行病的详细调查同类并且 heteiogeneous 网络被执行。在基本流行模型的分析以后,同质、异构的网络上的 susceptible-infected-susceptible (SIS ) 模型被建立,并且在网络的这二种不同类型的感染的个人的密度的动态进化理论上被分析。它显示对 piopagate 更容易的那异构的网络 sre 因为流行病和领先的传播行为被在起始的爆发的指数的增加支配。感染在同类的上比那在异构的网络上是快得多的大规模模拟显示。它意味着网络拓扑学能在发生在复杂网络上的流行病上有重要效果。根据理论分析和数字模拟介绍的流行爆发 sre 的某抑制 sfrategies。 | XIA Chengyi LIU Zhongxin CHEN Zengqiang YUAN Zhuzhi | 2007 | Progress in Natural Science:Materials International2007，17，3： | 11 |
| 17 | Solving type-2 fuzzy relation equations via semi-tensor product of matrices显示文摘The problem of solving type-2 fuzzy relation equations is investigated. In order to apply semi-tensor product of matrices,a new matrix analysis method and tool, to solve type-2 fuzzy relation equations, a type-2 fuzzy relation is decomposed into two parts as principal sub-matrices and secondary sub-matrices; an r-ary symmetrical-valued type-2 fuzzy relation model and its corresponding symmetrical-valued type-2 fuzzy relation equation model are established. Then, two algorithms are developed for solving type-2 fuzzy relation equations, one of which gives a theoretical description for general type-2 fuzzy relation equations;the other one can find all the solutions to the symmetrical-valued ones. The results can improve designing type-2 fuzzy controllers,because it provides knowledge to search the optimal solutions or to find the reason if there is no solution. Finally some numerical examples verify the correctness of the results/algorithms. | Yongyi YAN Zengqiang CHEN Zhongxin LIU | 2014 | Control Theory and Technology2014，12，2： | 10 |
| 18 | Semi-tensor product of matrices approach to reachability of finite automata with application to language recognition显示文摘 | Yongyi YAN Zengqiang CHEN Zhongxin LIU | 2014 | Frontiers of Computer Science2014，8，6： | 9 |
| 19 | DESIGN AND ANALYSIS FOR NEW DISCRETE TRACKING-DIFFERENTIATORS显示文摘In this paper,some kinds of linear and nonlinear tracking-differentiators are designed by using suitable exponent functions instead of switch functions,and the stability of these tracking-differentiators is proved.From the result of simulations,it is manifest that the tracking speeds of these kinds of linear and nonlinear tracking-differentiators are very high,and their design procedures are simple. | Wang Xinhua Chen Zengqiang Yuan ZhuzhiDept. of Automation,Nankai Univ.,Tianjin 300071,China. | 2003 | Applied Mathematics(A Journal of Chinese Universities)2003，18，2： | 9 |
| 20 | Pinning weighted complex networks with heterogeneous delays by a small number of feedback controllers显示文摘Weighted complex dynamical networks with heterogeneous delays in both continuous-time and discrete-time domains are controlled by applying local feedback injections to a small fraction of network nodes. Some generic stability criteria ensuring delay-independent stability are derived for such controlled networks in terms of linear matrix inequalities (LMIs), which guarantee that by placing a small number of feedback controllers on some nodes the whole network can be pinned to some desired homogenous states. In some particular cases, a single controller can achieve the control objective. It is found that stabilization of such pinned networks is completely determined by the dynamics of the individual uncoupled node, the overall coupling strength, the inner-coupling matrix, and the smallest eigenvalue of the coupling and control matrix. Numerical simulations of a weighted network composing of a 3-dimensional nonlinear system are finally given for illustration and verification. | XIANG LinYing LIU ZhongXin CHEN ZengQiang YUAN ZhuZhi | 2008 | Science in China(Series F)2008，51，5： | 8 |
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