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Solar evaporation for simultaneous oil-water separation and electricity generation with Janus wood-based absorbers

Frontiers of Environmental Science & Engineering 2024年第2期18卷 13-23页

作者： yue Yang ze Fu Qi zhang Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science&TechnologyNanjing 210094China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructuresCollege of Engineering and Applied SciencesKey Laboratory of Intelligent Optical Sensing and Manipulation(Ministry of Education)Jiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210093China

Oily wastewater from ocean oil spills endangers marine ecosystems and human health. Therefore, developing an effective and sustainable solution for separating oil-water mixtures is urgent. Interfacial solar photothermal evaporation is a promising approach for the complete separation of two-phase mixtures using only solar energy. Herein, we report a carbonized wood-based absorber with Janus structure of comprising a hydrophobic top-layer and an oleophobic bottom-layer for simultaneous solar-driven oil-water separation and electricity generation. Under sunlight irradiation, the rapid evaporation of seawater will induce a separation of oil-water mixtures, and cause a high salt concentration region underlying the interface, while the bottom “bulk water” maintains in a low salt concentration, thus forming a salinity gradient. Electricity can be generated by salinity gradient power. Therefore, oil-water separation efficiency of > 99% and derived extra electricity power of ~0.1 W/m2 is achieved under solar radiation, demonstrating the feasibility of oil-water separation and electricity production synchronously directly using solar energy. This work provides a green and cost-effective path for the separation of oil-water mixtures.

关键词： Oily wastewater Carbonized wood Salinity gradient Electricity generation Solar irradiation

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北京平原区南苑—通县断裂南西段结构特征和活动性

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科学技术与工程 2024年第18期24卷 7552-7562页

作者：牛文治何付兵沙春梅张悦泽刘振华北京市地质调查研究所北京102206 北京市市级职工创新工作室(城市地质、活动构造与监测) 北京100097 黑龙江省自然资源调查院哈尔滨150036 北京市规划和自然资源委员会门头沟分局北京102300

南苑—通县断裂是北京市平原区重要的隐伏断裂之一,其结构特征及活动性的研究对于优化北京市国土空间格局及城市地质安全具有重要意义。采用可控源大地音频电磁测深和高精度重力勘探方法,结合钻孔地层剖面及地质年代学测定,对南苑—通... 详细信息

南苑—通县断裂是北京市平原区重要的隐伏断裂之一,其结构特征及活动性的研究对于优化北京市国土空间格局及城市地质安全具有重要意义。采用可控源大地音频电磁测深和高精度重力勘探方法,结合钻孔地层剖面及地质年代学测定,对南苑—通县断裂南西段的结构特征及活动性进行深入探讨。研究结果显示:南苑—通县断裂在北京市南部地区具有较好的延展性,其断裂行迹在可控源音频大地电磁测深和重力剖面上得到了良好的反映。通过钻孔地层剖面及钻孔年代学格架分析,发现断裂没有错断中更新统以上地层,推测南苑—通县断裂南西段在中更新世以来不活动。此外,钻孔中新近纪玄武岩的出现也证明了断裂带定位的准确性,推断玄武岩岩浆来源于软流圈地幔的上涌和区域内大断裂的伸展活动共同作用结果。研究结果填补了南苑—通县断裂南西段活动性研究的空白,为北京市南部地区城市地质安全和国土空间开发提供了重要的科学支持,具有重要的理论和实践意义。

关键词：南苑—通县断裂断裂活动性岩浆活动钻孔地层剖面地球物理探测

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Generalized distributed four-domain digital twin system for intelligent manufacturing

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Journal of Central South University 2022年第1期29卷 209-225页

作者： LIU Zhi-feng zhang yue-ze YANG Cong-bin HUANG Zu-guang zhang Cai-xia XIE Fu-gui Institute of Advanced Manufacturing and Intelligent Technology Beijing University of TechnologyBeijing 100124China Beijing Key Laboratory of Advanced Manufacturing Technology Beijing University of TechnologyBeijing 100124China China National Machine Tool Quality Supervision Testing Center Beijing 100000China Department of Mechanical Engineering(DME) Tsinghua UniversityBeijing 100084China

Discrete manufacturing workshops are confronted with problems of processing diverse products and strict real time requirements for data service calculation and manufacturing equipment,which makes it difficult to provide real time feedback and *** this study,a high-availability,high-performance,and high-concurrency digital twin reference model was constructed to satisfy a large number of manufacturing requirements.A multiterminal real-time interaction model and information aging classification rules for virtual and physical models were ***,a multiterminal virtual interaction model was proposed,and a generalized distributed computing service digital twinning system was *** digital twin system was considered a machine tool box processing line as an actual ***,a full closed-loop manufacturing process digital twin platform for physical request service,real-time response,and quality information feedback from iterations,which provides case guidance for subsequent factory digital twin systems,was *** proposed system can satisfy the requirements of multidevice big data computing services in modern manufacturing plants,as well as multiplatform,low-latency,and high-fidelity information visualization requirements for ***,this system is expected to play an important role in information factories.

关键词： digital twin distributed system multiterminal interaction container choreography system

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Risk evaluation for diabetic retinopathy in Chinese renalbiopsied type 2 diabetes mellitus patients

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International Journal of Ophthalmology(English edition) 2024年第7期17卷 1283-1291页

作者： Shou-yue Huang Qi-Wei Hu ze-Wei zhang Ping-Yan Shen Qiong zhang Department of Ophthalmology Ruijin Hospital Affiliated Medical SchoolShanghai Jiao Tong UniversityShanghai 200025China Department of Nephrology Ruijin Hospital Affiliated Medical SchoolShanghai Jiao Tong UniversityShanghai 200025China

AIM:To investigate diabetic retinopathy(DR)prevalence in Chinese renal-biopsied type 2 diabetes mellitus(T2DM)patients with kidney dysfunction,and to further evaluate its relationship with diabetic nephropathy(DN)incidence and the risk factors for DR development in this ***:A total of 84 renal-biopsied T2DM patients were *** and imaging examinations were employed for DR *** information and clinical measures along with renal histopathology were analyzed for comparisons between the DR and non-DR *** factors on DR development were analyzed with multiple logistic ***:DR prevalence was 50%in *** incidences of DN,non-diabetic renal disease(NDRD)and mixed-type pathology were 47.6%,19.0%and 33.3%in the DR group respectively,while 11.9%,83.3%and 4.8%in the non-DR *** blood pressure,ratio of urinary albumin to creatine ratio,urinary albumin,24-hours urinary protein,the incidence and severity of DN histopathology were found statistically increased in the DR *** logistic regression analysis showed histopathological DN incidence significantly increased the risk of DR development[odds ratio(OR)=21.664,95%confidential interval(CI)5.588 to 83.991,P<0.001 for DN,and OR=45.475,95%CI 6.949 to 297.611,P<0.001 for mixed-type,respectively,in reference to (NDRD)],wherein DN severity positively ***:Renal histopathological evidence indicates DN incidence and severity increases the risk of DR development in Chinese T2DM patients inexperienced of regular fundus examinations.

关键词： diabetic retinopathy diabetic nephropathy vision threatens renal biopsy vision screening

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Improvement for creep strength of a second-generation single crystal superalloy by design of heat treatments

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Rare Metals 2024年第1期43卷 342-350页

作者： Wan-Shun Xia Xin-Bao Zhao Jia-Chen Xu Quan-Zhao yue Qing-Qing Ding Huan-Chang Duan yue-Feng Gu Hong-Bin Bei ze zhang Institute of Superalloys Science and Technology School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Silicon and Advanced Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China

Design of heat treatments is related to the key technology for development of nickel-based single crystal superalloys(Ni-SXs). Based on the full understanding of the solidification characteristics, this work applies optimization design of heat treatments for a second-generation Ni-SX. Microstructure evolution and creep properties are compared in the material under conventional/standard(Std.) and optimized(Opt.) treatments. For the Std. sample,strong dendritic segregations determine inconsistent microstructure evolution in the dendritic(D) and interdendritic region(ID), while the latter serves as weak area to have the prior microcrack initiation, damaging overall performance of the alloy. The Opt. treatment applies higher homogenization temperature, leading to overall reduced segregations, while not inducing incipient melting. A lower temperature of first-step ageing is used to lower the size ofγ'particles. These help to form the more uniform microstructure in dendritic and interdendritic region and relieve the inconsistent microstructure evolution. The balanced local strength makes ID no longer as the weak area,thus restricting microcrack initiation. Great improvement of high temperature and low stress property is obtained by this progress, leading to the pronounced increase of creep rupture life under 1100 °C/140 MPa.

关键词： Single crystal superalloy Heat treatment Segregation Solidification Creep property

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Characteristic analysis of 1.06 μm long-cavity diode lasers based on asymmetric waveguide structures

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JOURNAL OF INFRARED AND MILLIMETER WAVES 2024年第4期43卷 557-562页

作者： Zhao, Ren-ze Xin, Gao Fu, Ding-Yang zhang, yue Su, Peng Bo, Bao-Xue Changchun Univ Sci & Technol Natl Key Lab High Power Semicond Lasers Changchun 130022 Peoples R China

In long-cavity edge-emitting diode lasers, longitudinal spatial hole burning (LSHB), two-photon absorption (TPA) and free carrier absorption (FCA) are among the key factors that affect the linear increase in output power at high injection currents. In this paper, a simplified numerical analysis model is proposed for 1. 06 mu m long-cavity diode lasers by combining TPA and FCA losses with one-dimensional (1D) rate equations. The effects of LSHB, TPA and FCA on the output characteristics are systematically analyzed, and it is proposed that adjusting the front facet reflectivity and the position of the quantum well (QW) in the waveguide layer can improve the front facet output power.

关键词： diode lasers longitudinal spatial hole burning free carrier absorption two-photon absorption

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Elite Dung Beetle Optimization Algorithm for Multi-UAV Cooperative Search in Mountainous Environments

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Journal of Bionic Engineering 2024年第4期21卷 1677-1694页

作者： Xiaoyong zhang Wei yue The College of Marine Electrical Engineering Dalian Maritime UniversityDalian116026China

This paper aims to address the problem of multi-UAV cooperative search for multiple targets in a mountainous environment,considering the constraints of UAV dynamics and prior environmental ***,using the target probability distribution map,two strategies of information fusion and information diffusion are employed to solve the problem of environmental information inconsistency caused by different UAVs searching different areas,thereby improving the coordination of UAV ***,the task region is decomposed into several high-value sub-regions by using data clustering *** on this,a hierarchical search strategy is proposed,which allows precise or rough search in different probability areas by adjusting the altitude of the aircraft,thereby improving the search ***,the Elite Dung Beetle Optimization Algorithm(EDBOA)is proposed based on bionics by accurately simulating the social behavior of dung beetles to plan paths that satisfy the UAV dynamics constraints and adapt to the mountainous terrain,where the mountain is considered as an obstacle to be ***,the objective function for path optimization is formulated by considering factors such as coverage within the task region,smoothness of the search path,and path *** effectiveness and superiority of the proposed schemes are verified by the simulation.

关键词： Mountainous environment Multi-UAV cooperative search Environment information consistency Elite dung beetle optimization algorithm(EDBOA) Path planning

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Non-monotonic behavior of jam probability and stretched exponential distribution in pedestrian counterflow

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CHINESE PHYSICS B 2024年第9期33卷 259-266页

作者： Chen, ze-Hao Wu, Zhi-Xi Guan, Jian-yue Guangxi Normal Univ Guilin 541004 Peoples R China Lanzhou Univ Lanzhou Ctr Theoret Phys Key Lab Theoret Phys Gansu Prov Lanzhou 730000 Peoples R China Lanzhou Univ Key Lab Quantum Theory & Applicat Minist Educ Lanzhou 730000 Peoples R China

We adopt a floor field cellular automata model to study the statistical properties of bidirectional pedestrian flow moving in a straight corridor. We introduce a game-theoretic framework to deal with the conflict of multiple pedestrians trying to move to the same target location. By means of computer simulations, we show that the complementary cumulative distribution of the time interval between two consecutive pedestrians leaving the corridor can be fitted by a stretched exponential distribution, and surprisingly, the statistical properties of the two types of pedestrian flows are affected differently by the flow ratio, i.e., the ratio of the pedestrians walking toward different directions. We also find that the jam probability exhibits a non-monotonic behavior with the flow ratio, where the worst performance arises at an intermediate flow ratio of around 0.2. Our simulation results are consistent with some empirical observations, which suggest that the peculiar characteristics of the pedestrians may attributed to the anticipation mechanism of collision avoidance.

关键词： traffic and crowd dynamics evolutionary game theory 02.50.Le 45.70.Vn FLOW CHARACTERISTICS DYNAMICS

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One-step controlled electrodeposition nickel sulfides heterointerfaces favoring the desorption of hydroxyl groups for efficient hydrogen generation

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Rare Metals 2024年第9期43卷 4377-4386页

作者： Ru-Chun Li Xin-yue zhang ze-yue Qu Feng-Yi Liu Quan-Qing Xu Zhao-Xia Hu Jing-Wei Li Mohamed-Nawfal Ghazzal Jin-Li Yu Faculty of Chemistry and Chemical Engineering Yunnan Normal University Foshan Gaoke Hechuang Technology Co. Ltd. School of Chemistry and Chemical Engineering Guangzhou University Universite′Paris-Saclay UMR 8000 CNRSInstitut de Chimie Physique Department of Chemistry City University of Hong Kong

The heterointerface engineering involving different components or phases represents a desirable strategy for enhancing the sluggish kinetics of hydrogen evolution reaction （HER）.However,constructing desired heterointerfaces and elucidating the reaction mechanisms on the interface remains a considerable *** this work,we propose a straightforward electrochemical synthesis strategy to prepare the nickel sulfide-based heterointerfaces for *** mechanism of electrochemical synthesis is revealed,wherein metal-thiourea species can be formed at the cathode potential and subsequently oxidized to nickel sulfides at the anode *** this mechanism,a range of nickel sulfides,including NiS,Ni3S2/NiS,Ni/Ni3S2and Ni3S2,have been successfully synthesized by tuning the potential range of cyclic *** these,the obtained Ni3S2/NiS@CC（CC:carbon cloth） exhibits the smallest overpotential of84 mV at 10 mA·cm-2and high *** calculations further reveal that the combination of NiS and Ni3S2induces electron redistribution at the interface,and thus the Volmer process is effectively promoted with faster water dissociation and OH desorption ***,the simplicity method coupled with a clear synthesis mechanism and outstanding HER performance highlights its promising potential for practical applications.

关键词： Electrochemical synthesis Heterointerfaces Hydrogen evolution reaction OH desorption kinetics

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Highly selective and eco-friendly dihydroisoquinoline synthesis via Cu/Co synergistic catalysis in Cu NPs@MOFs catalyst under mild conditions

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Science China Chemistry 2024年第5期67卷 1561-1568页

作者： Peng-Fei Guo ze-Long Liang yue-E Jiao Hang Xu Bin Zhao Key Laboratory of Advanced Energy Material Chemistry Renewable Energy Conversion and Storage CenterDepartment of ChemistryNankai UniversityTianjin 300071China

3,4-Dihydroisoquinoline(DHIQ)is an important precursor used in the production of drugs for treating cancer,HIV,Alzheimer's disease,*** studies on DHIQ synthesis show low catalytic selectivity due to the susceptible over-oxidation feedstock of1,2,3,4-tetrahydroisoquinoline(THIQ),which often requires alkali ***,it is desirable yet challenging to explore a highly selective and efficient oxydehydrogenation capacity for DHIQ synthesis under eco-friendly reaction ***,a novel framework 1 was synthesized,exhibiting 1D channels with the size of 4.6 A×9.6 A and high solvent/p H/thermal stability.A stable framework allows it to encapsulate Cu nanoparticles(NPs)to form Cu NPs@1-x(x=1,2,3,and 4)with varying loading amounts of Cu NPs at 2.0 wt%,3.0 wt%,4.0 wt%,and 6.0 wt%,*** NPs@1-3 could selectively catalyze the reaction from THIQ to DHIQ with a high selectivity of 98%and a recorded turnover frequency(TOF)of 22.1 h-1under eco-friendly mild *** corresponding catalytic activity can maintain at least five recyclings and can be further applied to gram-scale ***,the efficient preparation of DHIQ catalyzed by Cu NPs@1-3 could be realized even under air ***,the anticancer molecule precursor synthesis of 6,7-dimethoxy-3,4-dihydroisoquinoline was also selectively catalyzed by Cu NPs@*** investigations revealed that high catalytic performance can be attributed to the stable framework and the synergistic catalytic effect of the loaded Cu NPs and Co metal *** importantly,this work represents the first example of MOF catalysts for selectively thermo-catalytic DHIQ synthesis and demonstrates a simple approach to obtain efficient catalysts for selective oxydehydrogenation in the production of unsaturated compounds.

关键词： metal-organic frameworks Cu NPs@MOFs 3 4-dihydroisoquinoline selective oxydehydrogenation synergistic catalysis

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