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Effect of ligand initial conformation and counteranion on complexation behaviors of R-BTBP toward Pd(Ⅱ)contained in highly active liquid waste

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Chinese Chemical Letters 2022年第7期33卷 3565-3569页

作者： Lei Xu Wenya Ding Anyun Zhang ziyang Liu Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province Institute of Nuclear Agricultural SciencesZhejiang UniversityHangzhou 310058China College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310027China College of Materials Science and Engineering China Jiliang UniversityHangzhou 310018China

Soft N-donor bis-triazin bipyridines derives(R-BTBP)are a type of very promising extratant for extraction and complexation with long-lived trivalent minor actinides over lanthanides from highly active liquid waste(HLW).In addition to minor actinides,R-BTBP also holds very strong complexation ability toward fission ***,few studies have been focused on the separation and complexation with the fission product Pd(Ⅱ)by ***,the complexation behaviors of Pd(Ⅱ)with four typical R-BTBP ligands were systematically studied by single crystal X-ray diffraction,1H NMR titration and theoretical *** effects of R-BTBP initial conformation and nitrate anions on the complexation behaviors of R-BTBP with Pd(Ⅱ)were thoughtfully *** the 1:1 and 2:1 binuclear complexes could be formed between Pd(Ⅱ)and R-BTBP with initialⅡconformation in the presence of nitrate anions,while only one 1:1 type Pd(Ⅱ)complex could be formed for those with initial OO *** nitrate anion,only one 1:1 type complex was formed in *** structure of the 1:1 Pd(Ⅱ)/R-BTBP complex was firstly characterized by single crystal *** calculation results showed that a significant large rotational energy barrier(21.8~22.6 kcal/mol)must be overcome to form theⅡtype 2:1Pd(Ⅱ)complex for those OO type R-BTBP ligands,however which would not prevent them from forming the 1:1 type complex.

关键词： R-BTBP Fission product palladium Minor actinides Complexation Highly active liquid waste

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An MPC-based manoeuvre stability controller for full drive-by-wire vehicles

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Control Theory and Technology 2019年第4期17卷 357-366页

作者： Ping WANG ziyang LIU Qifang LIU Hong CHEN The State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun Jilin 130025China Department of Control Science and Engineering School of Communication EngineeringJilin UniversityChangchun Jilin 130025China

Aiming at the actuator time delay caused by the drive-by-wire technology,a novel manoeuvre stability controller based on model predictive control is proposed for full drive-by-wire ***,the future vehicle dynamics are predicted by a twodegree-of-freedom vehicle model with input ***,in order to prevent the vehicle from destabilizing due to excessive side slip angles,the determined ideal yaw rate and side slip angle are tracked simultaneously by optimizing the front wheel angle and additional yaw ***,in order to improve the trajectory tracking ability,a side slip angle constraint determined by phase plane stability boundaries is added to the cost *** results of Matlab and veDYNA co-simulation show that the regulated yaw rate can track the reference value well and the side slip angle ***,the trajectory tracking ability is improved obviously by compensating the time delay.

关键词： Drive-by-wire technology networked control system model predictive control stability control time delay

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Difference in calcium ion precipitation between free and immobilized Halovibrio mesolongii HMY2

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Journal of Environmental Sciences 2022年第12期34卷 184-200页

作者： Huaxiao Yan Meiyu Huang Jihan Wang Heding Geng Xiyu Zhang ziyang Qiu Yongliang Dai Zuozhen Han Yudong Xu Long meng Lanmei Zhao Maurice E.Tucker Hui Zhao College of Chemical and Biological Engineering College of Safety and Environmental EngineeringCollege of Earth Science and EngineeringShandong University of Science and TechnologyQingdao 266590China Laboratory for Marine Mineral Resources Center for Isotope Geochemistry and GeochronologyQingdao National Laboratory for Marine Science and TechnologyQingdao 266237China School of Earth Sciences University of BristolBristol BS81RJUK Cabot Institute University of BristolCantock’s CloseBristol BS81UJUK

Biomineralization has become a research focus in wastewater treatment due to its much lower costs compared to traditional ***,the low sodium chloride(NaCl)-tolerance of bacteria limits applications to only water with low NaCl ***,calcium ions in hypersaline wastewater(10%NaCl)were precipitated by free and immobilized Halovibrio mesolongii HMY2 bacteria and the differences between them were *** results show that calcium ions can be transformed into several types of calcium carbonate with a range of morphologies,abundant organic functional groups(C-H,C-O-C,C=O,etc),protein secondary structures(β-sheet,α-helix,3_(10)helix,andβ-turn),P=O and S-H indicated by P2p and S2p,and more negativeδ^(13)C_(PDB)(‰)values(-16.8‰to-18.4‰).The optimal conditions for the immobilized bacteria were determined by doing experiments with six factors and five levels and using response surface *** the action of two groups of immobilized bacteria prepared under the optimal conditions,by the 10^(th)day,Ca^(2+)ion precipitation ratios had increased to 79%-89%and 80%-88%with changes in magnesium ion *** ions can significantly inhibit the calcium ion precipitation,and this inhibitory effect can be decreased under the action of immobilized *** induced by immobilized bacteria always aggregated together,had higher contents of Mg,P,and S,lower stable carbon isotope values and less well-developed protein secondary *** study demonstrates an economic and eco-friendly method for recycling calcium ions in hypersaline wastewater,providing an easy step in the process of desalination.

关键词： Biomineralization Halovibrio mesolongii Hypersaline wastewater Calcium ion removal Intracellular aragonite

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Assembly Variation Identification of High Pressure Spool by Response Surface Based Model Updating Using IV-optimal Designs

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Chinese Journal of Aeronautics 2012年第5期25卷 817-824页

作者： ZHANG ziyang XIE Shousheng HU Jinhai MIAO Zhuoguang WANG Lei The Engineering Institute Air Force Engineering UniversityXi'an 710038China

This article, in order to improve the assembly of the high-pressure spool, presents an assembly variation identification method achieved by response surface method （RSM）-based model updating using IV-optimal designs. The method involves screening out non-relevant assembly parameters using IV-optimal designs and the preload of the joints is chosen as the input features and modal frequency is the only response feature. Emphasis is placed on the construction of response surface models including the interactions between the bolted joints by which the non-linear relationship between the assembly variation caused by the changes ofpreload and the output frequency variation is established. By achieving an optimal process of selected variables in the model, assembly variation can be identified. With a case study of the laboratory bolted disks as an example, the proposed method is verified and it gives enough accuracy in variation identification. It has been observed that the first-order response surface models considering the interactions between the bolted joints based on the IV-optimal criterion are adequate for assembly purposes.

关键词： high-pressure spool bolted joints response surface method identification of assembly variation model updating IV-optimal designs

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Cyber-physical Collaborative Restoration Strategy for Power Transmission System Considering Maintenance Scheduling

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1331-1341页

作者： Baozhong Ti Chuanyun Zhang Jingfei Liu Zhaoyuan Wu ziyang Huang North China Branch of State Grid Corporation of China Beijing 100053China State Grid Beijing Electric Power Company Beijing 100031China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of Electrical and Electronic EngineeringNorth China Electric Power UniversityBeijing 102206China IEEE CSEE

In order to improve the ability of power transmission system to cope with compound faults on the communication side and power side,a cyber-physical collaborative restoration strategy is ***,according to the information system’s role in fault diagnosis,remote control of equipment maintenance and automatic output adjustment of generator restoration,a cyber-physical coupling model is *** this basis,a collaborative restoration model of power transmission system is established by studying interactions among maintenance schedule paths,information system operation,and power system *** on power flow linearization and the large M-ε method,the above model is transformed into a mixed integer linear programming model,whose computational burden is reduced further by the clustering *** to the parameters of IEEE39 New England system,the geographic wiring diagram of the cyber-physical system is *** results show the proposed restoration strategy can consider the support function of the information system and space-time coordination of equipment maintenance at both sides comprehensively to speed up load recovery progress.

关键词： Clustering method collaborative restoration cyber-physical power system maintenance scheduling power transmission system restoration

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A highly selective catalyst of Co/La_(4)Ga_(2)O_(9) for CO_(2) hydrogenation to ethanol

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Journal of Energy Chemistry 2021年第5期30卷 486-495页

作者： Kang An Siran Zhang Jiaming Wang Qiang Liu ziyang Zhang Yuan Liu Department of Catalysis Science and Technology School of Chemical EngineeringTianjin UniversityTianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China

A new catalyst of Co/La_(4)Ga_(2)O_(9) for CO_(2) hydrogenation to produce ethanol was prepared by reducing LaCo^(0).5 Ga0.5 O3,which showed excellent selectivity to ethanol(%35 C-mol%)at mild reaction conditions(270°C,3.5 MPa,3000 m L g-1 h-1).The catalysts were characterized by N_(2) adsorption/desorption,XRD,XAFS,CO and CO_(2)-TPD,H2 chemisorption,XPS and TEM *** interaction between Co nanoparticles(NPs)and La2+4 Ga_(2)O_(9) oxide resulted in Co^(0)-Coon the surface of Co *** was proposed that La_(4)Ga_(2)O_(9) could catalyze reverse water gas shift reaction(r-WGS),which converted CO_(2) to ***,the CO migrated to Co^(0)-Co^(2+)on Co NPs,where it was hydrogenated to form ethanol like higher alcohols synthesis from *** results suggest that by controlling the oxidation state of cobalt,and combined with a kind of active site for activating CO_(2) to form CO,a catalyst with excellent selectivity to ethanol could be obtained for CO_(2) hydrogenation,which means that the complex reaction may be proceed with high selectivity using only one active metal component.

关键词： CO_(2)hydrogenation Ethanol synthesis Perovskite Gallium Co nanoparticles

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Deployment of Edge Computing Nodes in IoT:Effective Implementation of Simulated Annealing Method Based on User Location

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China Communications 2024年第1期21卷 279-296页

作者： Junhui Zhao ziyang Zhang Zhenghao Yi Xiaoting Ma Qingmiao Zhang School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing 100044China School of Information Engineering East China Jiaotong UniversityNanchang 330013China

Edge computing paradigm for 5G architecture has been considered as one of the most effective ways to realize low latency and highly reliable communication,which brings computing tasks and network resources to the edge of *** deployment of edge computing nodes is a key factor affecting the service performance of edge computing *** this paper,we propose a method for deploying edge computing nodes based on user *** the combination of Simulation of Urban Mobility(SUMO)and Network Simulator-3(NS-3),a simulation platform is built to generate data of hotspot areas in Io T *** effectively using the data generated by the communication between users in Io T scenario,the location area of the user terminal can be *** this basis,the deployment problem is expressed as a mixed integer linear problem,which can be solved by Simulated Annealing(SA)*** analysis of the results shows that,compared with the traditional method,the proposed method has faster convergence speed and better performance.

关键词： deployment problem edge computing internet of things machine learning

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Effects of Added Mass on Muscle Activity and Joint Movement During Walking

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Journal of Bionic Engineering 2023年第6期20卷 2703-2715页

作者： Yali Han Frank C.Sup IV ziyang Han Zhangzhang Mi Department of Mechanical Engineering Nanjing Institute of TechnologyNanjing211167China Department of Mechanical and Industrial Engineering University of MassachusettsAmherstMA01003USA

Added mass provided irregular interference towards human movement and shifted the force generated by lower limb ***,the association between mass and muscle activities is not well *** study aims at investigating the influence of added mass on lower *** our study,five young,healthy walkers performed walking trials under three load conditions(unload;C1:0.25 pounds on feet,1 pound on calves,and 2 pounds on thighs;C2:1 pound on feet,2 pounds on calves,and 4 pounds on thighs).During walking,three-dimensional kinematics,sEMG signals,and oxygen consumption were collected which allowed us to understand the effects of added mass on *** also generated OpenSim simulation,designed to comprehend the relationship between added mass and *** the increase of added mass,maximum sEMG signal and peak joint torque increased;whereas,the horizontal stride time reduced(unload:1.697±0.02 s,C1:1.651±0.02 s,C2:1.622±0.02 s).Energy expenditure raised correspondingly(C1:6.53%,C2:24.85%).Moreover,joint moment increased,while same change occurred in muscle ***,our results show that participants responded positively to additional mass by adjusting muscle activities,joint movement,and stride frequency,which demonstrates the relationship between energy consumption and added mass.

关键词： Biomechanics Load carriage Gait Muscle force

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一种精细化声速场分步构建方法

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测绘工程 2025年第1期34卷 30-38页

作者：刘子阳王振杰王兆喆中国石油大学(华东)海洋与空间信息学院山东青岛266580

海洋环境监测、水下导航定位都需要准确的声速场信息,而声速场的构建面临分辨率与工作范围、时空尺度与数据之间的矛盾,导致无法反映准确的声速变化。为此,本文将声速场分为大尺度时空分辨率较低的背景场和小尺度时空分辨率较高的扰动场... 详细信息

海洋环境监测、水下导航定位都需要准确的声速场信息,而声速场的构建面临分辨率与工作范围、时空尺度与数据之间的矛盾,导致无法反映准确的声速变化。为此,本文将声速场分为大尺度时空分辨率较低的背景场和小尺度时空分辨率较高的扰动场,提出一种精细化声速场分步构建方法。首先,通过Argo声速剖面数据,基于经验正交函数构建声速长时间物理空间变化的背景场;然后,通过实测声速剖面数据,基于人工蜂群优化BP神经网络构建声速瞬时动态变化的扰动场;最后,将背景场与扰动场结合构建精确的声速场模型,反映完整的声速变化信息。本文基于该方法构建了南海局部区域600 m水深的声速场,结果表明,该方法能够建立高精度的声速场,其预测精度可达到1.038 m·s^(-1)。

关键词：声速场声速背景场声速扰动场经验正交函数人工蜂群优化BP神经网络

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Extraction of lacunarity variation index for revealing the slope pattern in the Loess Plateau of China

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Frontiers of Earth Science 2021年第1期15卷 94-105页

作者： ziyang DAI Fayuan LI Mingwei ZHAO Lanhua LUO Haoyang JIAO School of Geography Nanjing Normal UniversityNanjing 210023China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China Key Laboratory of Virtual Geographic Environment(Ministry of Education) Nanjing Normal UniversityNanjing 210023China Department of Land Information Engineering Chuzhou UniversityChuzhou 239000China

Lacunarity analysis is frequently used in multiscale and spatial pattern ***,the explanation for the lacunarity analysis results is limited mainly at a qualitative description *** other words,this approach can be used to judge whether the spatial pattern of the objective is regular,random or aggregated in *** lacunarity analysis,however,cannot afford many quantitative ***,this study proposed the lacunarity variation index(LVI)to reflect the rates of variation of lacunarity with the *** comparison with lacunarity analysis,the simulated experiments show that the LVI analysis can distinguish the basic spatial pattern of the geography objects more clearly and detect the scale of aggregated *** experiment showed that different slope types in the Loess Plateau display aggregated patterns,and the characteristic scales of these patterns were detected using the slope pattern in the Loess Plateau as the research *** study can improve the spatial pattern analysis and scale detecting methods,as well as provide a new method for landscape and vegetation community pattern *** analysis is frequently used in multiscale and spatial pattern ***,the explanation for the lacunarity analysis results is limited mainly at a qualitative description *** other words,this approach can be used to judge whether the spatial pattern of the objective is regular,random or aggregated in *** lacunarity analysis,however,cannot afford many quantitative ***,this study proposed the lacunarity variation index(LVI)to reflect the rates of variation of lacunarity with the *** comparison with lacunarity analysis,the simulated experiments show that the LVI analysis can distinguish the basic spatial pattern of the geography objects more clearly and detect the scale of aggregated *** experiment showed that different slope types in the Loess Plateau display aggregated patterns,and th

关键词： lacunarity variation index(LVI) slope pattern characteristic scale the Loess Plateau digital elevation model(DEM)

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