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Directional amine-based solvent extraction for simultaneous enhanced water recovery,salt separation and effective descaling from hypersaline brines

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Frontiers of Environmental Science & Engineering 2024年第3期18卷 83-92页

作者： Yuyao Zhang Litao Jia Jin Zhao Xuming liu Shuyu Dong chuanyang liu Yuanyuan Cui Shougang Research Institute of Technology Beijing 100043China Research Center of Environmental Technology in Water Pollution Source Identification and Precise Supervision School of EnvironmentTsinghua UniversityBeijing 100084China

The feasibility of simultaneous water recovery,salt separation and effective descaling of hypersaline brine was investigated by diisopropylamine(DIPA)-based directional solvent extraction(DSE),using diluted/concentrated seawater with initial saline concentration range of 12–237 g/L at extraction temperatures of 5 and 15℃,*** water recovery shows an obvious boundary at saline concentration of 115 g/L under dual effect of specific water extraction efficiency and extraction *** Cl^(–) ion concentration in product water is in sharp contrast to the nearly complete removal of SO_(4)^(2–)and hardness ions,indicating that DIPA-based DSE process indeed achieved efficient separation and purification of Cl^(–) ion from hypersaline ***,the radical precipitation of Mg^(2+)and Ca^(2+)ions in form of Mg(OH)_(2)and CaCO_(3)demonstrates effective descaling potential,although it leads to more DIPA residues in dewatered raffinate than product ***,an exponential correlation between the Cl^(–) removal efficiency and specific water extraction efficiency further reveals the intrinsic relationship of water extraction process and transfer of Cl^(–) ion to the product ***,the study provides a novel approach for integrating the water recovery and separation of Cl^(–) ion from ultra-high-salinity brines with radical precipitation of Mg^(2+)and Ca^(2+) ions in one step.

关键词： Hypersaline brines Directional solvent extraction Salt separation Ca^(2+)and Mg^(2+)descaling

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基于视觉的输电线路金具锈蚀缺陷检测方法研究进展

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仪器仪表学报 2024年第3期45卷 286-305页

作者：刘传洋吴一全刘景景南京航空航天大学电子信息工程学院南京211106 池州学院机电工程学院池州247000

输电线路金具的表面锈蚀作为常见的缺陷类型,是危害输电线路安全运行的重要隐患之一,如何快速、准确地发现锈蚀的金具设备并进行修复是线路巡检运维工作亟待解决的问题。本文综述了近十年来基于视觉的输电线路金具锈蚀缺陷检测方法的研... 详细信息

输电线路金具的表面锈蚀作为常见的缺陷类型,是危害输电线路安全运行的重要隐患之一,如何快速、准确地发现锈蚀的金具设备并进行修复是线路巡检运维工作亟待解决的问题。本文综述了近十年来基于视觉的输电线路金具锈蚀缺陷检测方法的研究进展。首先简述了基于传统图像处理的金具锈蚀缺陷检测流程;然后按照基于传统图像处理、深度学习方法概述了金具设备锈蚀缺陷检测,重点阐述了基于深度卷积神经网络的目标检测和语义分割算法在输电线路金具锈蚀缺陷检测中的应用;随后介绍了基于深度学习的金具锈蚀缺陷检测自建数据集以及性能评价指标;最后指出了基于深度学习的输电线路金具锈蚀缺陷检测方法目前存在的问题,并对未来研究工作进行了展望。

关键词：金具锈蚀缺陷图像处理深度学习目标检测语义分割

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Line Fault Detection of DC Distribution Networks Using the Artificial Neural Network

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Energy Engineering 2023年第7期120卷 1667-1683页

作者： Xunyou Zhang chuanyang liu Zuo Sun Country College of Mechanical and Electrical Engineering Chizhou UniversityChizhou247000China School of Electrical Engineering Southeast UniversityNanjing210096China College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing211106China

ADC distribution network is an effective solution for increasing renewable energy utilization with distinct benefits,such as high efficiency and easy ***,a sudden increase in the current after the occurrence of faults in the network may adversely affect network *** study proposes an artificial neural network(ANN)-based fault detection and protection method for DC distribution *** ANN is applied to a classifier for different faults ontheDC *** backpropagationneuralnetwork is used to predict the line current,and the fault detection threshold is obtained on the basis of the difference between the predicted current and the actual *** proposed method only uses local signals,with no requirement of a strict communication *** experiments are conducted for the proposed algorithm on a two-terminal DC distribution network modeled in the PSCAD/EMTDC and developed on the MATLAB *** results confirm that the proposed method can accurately detect and classify line faults within a few milliseconds and is not affected by fault locations,fault resistance,noise,and communication delay.

关键词： Artificial neural network DC distribution network fault detection

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幽门螺杆菌根除治疗对儿童特发性血小板减少性紫癜疗效的meta分析

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现代医药卫生 2024年第4期40卷 625-629页

作者：方浩然刘传洋王玉婷重庆医科大学附属儿童医院消化科/儿童发育疾病研究教育部重点实验室/国家儿童健康与疾病临床医学研究中心/儿童发育重大疾病国家国际科技合作基地/儿科学重庆市重点实验室重庆400014

目的系统评价幽门螺杆菌(Hp)根除治疗对儿童特发性血小板减少性紫癜(ITP)的疗效。方法计算机检索PubMed、Embase、Cochrane随机对照试验数据库、万方医学网数据库中有关Hp根除治疗对儿童ITP疗效的随机对照试验。检索时间为建库至2022... 详细信息

目的系统评价幽门螺杆菌(Hp)根除治疗对儿童特发性血小板减少性紫癜(ITP)的疗效。方法计算机检索PubMed、Embase、Cochrane随机对照试验数据库、万方医学网数据库中有关Hp根除治疗对儿童ITP疗效的随机对照试验。检索时间为建库至2022年8月。采用RevMan5.4、Stata12.0软件进行统计分析。结果共纳入7项研究,315例患儿。与单纯免疫治疗比较,Hp根除治疗联合免疫治疗可明显提升总体缓解率、完全缓解率,降低治疗后复发率(优势比=2.87、3.27、0.24,95%可信区间:1.60~5.13、2.01~5.32、0.11~0.53,P=0.000 40、<0.000 01、0.000 30)。结论 Hp根除治疗对儿童ITP患者的临床缓解及预防复发均具有积极作用,但由于当前研究证据质量有限,研究结论仍有待于大规模、高质量随机对照试验进一步验证。

关键词：幽门螺杆菌儿童特发性血小板减少性紫癜治疗结果 Meta分析

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Cassiae Semen improves non-alcoholic fatty liver disease through autophagy-related pathway

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Chinese Herbal Medicines 2023年第3期15卷 421-429页

作者： Mingning Ding Fei Zhou Yijie Li chuanyang liu Yiqing Gu Jianzhi Wu Guifang Fan Yajing Li Xiaojiaoyang Li School of Life Sciences Beijing University of Chinese MedicineBeijing 100029China School of Chinese Materia Medica Beijing University of Chinese MedicineBeijing 100029China School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China

Objective:Cassiae Semen(CS,Juemingzi in Chinese)has been used for thousands of years in ancient Chinese history for relieving constipation,improving liver function as well as preventing *** we aimed to elucidate the anti-steatosis effect and underlying mechanism of CS against non-alcoholic fatty liver disease(NAFLD).Methods:High-performance liquid chromatography(HPLC)was used to identify the major components of CS water *** were fed with a high-fat and sugar-water(HFSW)diet to induce hepatic steatosis and then treated with *** anti-NAFLD effect was determined by measuring serum biomarkers and histopathology ***,the effects of CS on cell viability and lipid metabolism in oleic acid and palmitic acid(OAPA)-treated HepG2 cells were *** expression of essential genes and proteins involved in lipid metabolism and autophagy signalings were measured to uncover the underlying ***:Five compounds,including aurantio-obtusin,rubrofusarin gentiobioside,cassiaside C,emodin and rhein were simultaneously identified in CS *** not only improved the diet-induced hepatic steatosis in vivo,as indicated by decreased number and size of lipid droplets,hepatic and serum triglycerides(TG)levels,but also markedly attenuated the OAPA-induced lipid accumulation in *** lipid-lowering effects induced by CS were largely dependent on the inhibition of fatty acid synthase(FASN)and the activation of autophagy-related signaling,including AMP-activated protein kinase(AMPK),light chain 3-II(LC3-II)/LC3-1 and autophagy-related gene5(ATG5).Conclusion:Our study suggested that CS effectively protected liver steatosis via decreasing FASN-related fatty acid synthesis and activating AMPK-mediated autophagy,which might become a promising therapeutic strategy for relieving NAFLD.

关键词： autophagy AMPK Cassia obtusifolia L. Cassia tora L. Cassiae Semenfatty acid synthesis non-alcoholic fatty acid disease

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Photon counting technique as a potential tool in micro-defect detection of epoxy insulation pull rod in gas-insulated switchgears

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High Voltage 2024年第2期9卷 267-274页

作者： Xianhao Fan Shu Niu Hanhua Luo Jizhong Liang Fang liu Wenqiang Li Weidong liu Wensheng Gao Yulong Huang chuanyang Li Jinliang He School of Electrical Engineering Tsinghua UniversityBeijingChina Electric Power Research Institute Shangxi Power Grid CorporationTaiyuanShanxiChina Shandong Taikai Electrical Insulation Co. Ltd.TaianShandongChina

The micro-defects in epoxy-based insulation materials generate a local high electric field which results in continuous degradation,seriously endangering the insulation system of gas-insulated switchgears.A highly sensitive detection technique is reported for micro-defects of insulation pull rods based on the photon counting(PC)*** re-sults demonstrated that for an epoxy-based insulation pull rod,the photons released during electroluminescence and ionisation at 2 kV,which is less than the partial discharge inception voltage,can be clearly *** findings presented a strong correlation between photon counts and defect *** has been conducted to elucidate the mechanism behind defect-induced PC,employing the amplification of ionising luminescence through electric field distortion induced by micro defects and the augmentation of electroluminescence through the aggregation of trap *** this regard,the authors verified that PC can serve as a potential tool in the detection of micro-insulation defects,which also has huge potential in online insulation condition monitoring.

关键词： technique. insulation defect

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Insight into fluorescence properties of 14 selected toxic single-ring aromatic compounds in water:Experimental and DFT study

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Frontiers of Environmental Science & Engineering 2020年第3期14卷 59-74页

作者： Muhammad Farooq Saleem Khan Jing Wu Cheng Cheng Mona Akbar Bo liu chuanyang liu Jian Shen Yu Xin State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Research Institute for Environmental Innovation(Suzhou) Tsinghua UniversitySuzhou 215000China School of Physical Science and Technology&Jiangsu Key Laboratory of Thin Films Soochow UniversitySuzhou 215006China

Various single-ring aromatic compounds in water sources are of great concern due to its hazardous impact on the environment and human *** fluorescence excitation-emission matrix(EEMs)spectrophotometry is a useftil method to identify organic pollutants in *** study provides a detailed insight into the fluorescence properties of the 14 selected toxic single-ring aromatic compounds by experimental and theoretical *** theoretical analysis were done with Time-Dependent Density Functional Theory(TD-DFT)and B3LYP/6-31G(d,p)basis set,whereas,Polarizable Continuum Model(PCM)was used to consider water as *** selected compounds displayed their own specific excitation-emission(Ex/Em)wavelengths region,at ExCl>Br>I).In this study the theoretical results are in line with experimental *** understanding of fluorescence and photophysical properties are of great importance in the identification of these compounds in the water.

关键词： Fluorescence Photophysical properties Effect of the substituent Toxic aromatic compounds

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基于深度学习的输电线路视觉检测方法研究进展

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中国电机工程学报 2023年第19期43卷 7423-7445页

作者：刘传洋吴一全南京航空航天大学电子信息工程学院江苏省南京市211106

输电线路巡检是电网持续稳定供电的保障,其目的是对电力线、绝缘子、电力杆塔、防振锤等线路设备进行状态检测和故障诊断,同时观测电力线周围潜在隐患。深度学习的发展为输电线路巡检提供了有效手段,与传统目标检测方法相比,深度学习方... 详细信息

输电线路巡检是电网持续稳定供电的保障,其目的是对电力线、绝缘子、电力杆塔、防振锤等线路设备进行状态检测和故障诊断,同时观测电力线周围潜在隐患。深度学习的发展为输电线路巡检提供了有效手段,与传统目标检测方法相比,深度学习方法能更有效地实现航拍图像中电力设备的识别及缺陷检测。该文综述近十年来基于深度学习的输电线路视觉检测方法的研究进展。首先,概述适用于输电线路巡检的深度卷积神经网络,包括分类网络、检测网络、语义分割网络,考虑到开发的深度学习网络模型便于在移动设备上应用,另外阐述轻量化网络;然后,重点阐述基于深度卷积神经网络的输电线路巡检图像数据目标检测;随后介绍7个电力设备数据集以及性能评价指标;最后,指出基于深度学习的输电线路巡检图像数据视觉检测方法目前存在的问题,并对进一步的工作进行展望。

关键词：输电线路巡检深度学习分类网络检测网络语义分割网络电力设备

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Realization of Complete Boolean Logic and Combinational Logic Functionalities on A Memristor-Based Universal Logic Circuit

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Chinese Journal of Electronics 2024年

作者： Xiaojuan LIAN chuanyang SUN Zeheng TAO Xiang WAN Xiaoyan liu Zhikuang CAI Lei WANG The College of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications

Memristors are a promising solution for building an advanced computing system due to their excellent characteristics, including small energy consumption, high integration density, fast write/read speed, great endurance and so on. In this work, we firstly design three basis logic XNOR1, XNOR2 and XOR gates by virtue of memristor ratioed logic(MRL), and further construct 1-bit numerical comparators, 2-bit numerical comparators and full adder 1 based on the above XNOR1, XNOR2 and XOR gates. Furthermore, we propose and design a universal logic circuit that can realize four different kinds of logic functions(AND, OR, XOR, XNOR) at the same time. Subsequently, a full adder 2 is built using XOR function of this universal logic circuit. Compared with the traditional CMOS circuits, the universal logic circuit designed in this work exhibits several merits such as fewer components, less power, and lower delay. This work demonstrates that memristors can be used as a potential solution for building a novel computing architecture.

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Investigation of β-Ga2O3 films and β-Ga2O3/GaN heterostructures grown by metal organic chemical vapor deposition

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Science China(Physics,Mechanics & Astronomy) 2020年第11期63卷 98-102页

作者： YaChao Zhang YiFan Li ZhiZhe Wang Rui Guo ShengRui Xu chuanyang liu ShengLei Zhao JinCheng Zhang Yue Hao State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology School of MicroelectronicsXidian UniversityXi’an 710071China China Electronic Product Reliability and Environmental Testing Research Institute Guangzhou 510610China School of Electronic and Information Engineering Suzhou University of Science and TechnologySuzhou 215009China

In this work,(-201)β-Ga2O3 films are grown on GaN substrate by metal organic chemical vapor deposition(MOCVD).It is revealed that theβ-Ga2O3 film grown on GaN possesses superior crystal quality,material homogeneity and surface morphology than the results of common heteroepitaxialβ-Ga2O3 film based on sapphire ***,the relevance between the crystal quality of epitaxialβ-Ga2O3 film and theβ-Ga2O3/GaN interface behavior is *** electron microscopy result indicates that the interface atom refactoring phenomenon is beneficial to relieve the mismatch strain and improve the crystal quality of subsequentβ-Ga2O3 ***,the energy band structure ofβ-Ga2O3/GaN heterostructure grown by MOCVD is investigated by X-ray photoelectron spectroscopy and a large conduction band offset of 0.89 eV is *** results in this work not only convincingly demonstrate the advantages ofβ-Ga2O3 films grown on GaN substrate,but also show the great application potential of MOCVDβ-Ga2O3/GaN heterostructures in microelectronic applications.

关键词： β-Ga2O3 GaN substrate MOCVD interface band structure

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