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Review of data security within energy blockchain:A comprehensive analysis of storage,management,and utilization

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High-Confidence Computing

High-Confidence Computing 2024年第3期4卷 82-102页

作者： Yunhua He zhihao Zhou Yan Pan Fahui Chong Bin wu Ke Xiao Hong Li School of Information Science and Technology North China University of TechnologyBeijing 100144China China Industrial Control Systems Cyber Emergency Response Team Beijing 100040China Key Laboratory in Blockchain and Data Security by Ministry of Industry and Information Technology Beijing 100040China Institute of Information Engineering Chinese Academy of Sciences Beijing 100195China

Energy systems are currently undergoing a transformation towards new paradigms characterized by decarbonization,decentralization,democratization,and *** this evolving context,energy blockchain,aiming to enhance efficiency,transparency,and security,emerges as an integrated technological solution designed to address the diverse challenges in this *** security is essential for the reliable and efficient functioning of energy *** pressing need to address challenges related to secure data storage,effective data management,and efficient data utilization is increasingly *** paper offers a comprehensive survey of academic discourse on energy blockchain data security over the past five years,adopting an all-encompassing perspective that spans data storage,management,and *** work systematically evaluates and contrasts the strengths and weaknesses of various research ***,this paper proposes an integrated hierarchical on-chain and off-chain security energy blockchain architecture,specifically designed to meet the complex security requirements of multi-blockchain business ***,this paper identifies key directions for future research,particularly in advancing the integration of storage,management,and utilization of energy blockchain data security.

关键词： Energy blockchain Data security Storage Management Utilization

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地铁列车轴装制动盘热力耦合仿真分析

机械强度 2023年第1期45卷 190-197页

作者：吴志豪吴兵苏州大学轨道交通学院苏州215131

电制动失效时的摩擦制动热负荷引起的制动盘热疲劳损伤是影响列车运行安全的重要因素。建立地铁列车轴装制动盘摩擦制动三维有限元模型,调查了制动盘在一次常用制动、一次紧急制动两种制动工况时的热-力耦合情况,获得制动盘在两种制动... 详细信息

电制动失效时的摩擦制动热负荷引起的制动盘热疲劳损伤是影响列车运行安全的重要因素。建立地铁列车轴装制动盘摩擦制动三维有限元模型,调查了制动盘在一次常用制动、一次紧急制动两种制动工况时的热-力耦合情况,获得制动盘在两种制动方式下的温度场和应力场。仿真结果表明,不同工况下制动盘面的温度分布具有相似规律,即在制动初期,盘面温度迅速上升并很快达到峰值点166.81℃和151.5℃,随后盘面温度缓慢下降。应力场初始以机械应力为主,随着制动温度的上升,热应力成为主要影响因素。应力场与温度场分布相似,但应力峰值延后于温度峰值出现。热应力在制动中会引起材料损伤积累,导致制动盘疲劳开裂。

关键词：制动盘温度场应力场热-力耦合

A polygalacturonase gene OsPG1 modulates water homeostasis in rice

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The Crop Journal 2024年第1期12卷 79-91页

作者： Qinwen Zou Ranran Tu Jiajun wu Tingting Huang zhihao Sun Zheyan Ruan Hongyu Cao Shihui Yang Xihong Shen Guanghua He Hong Wang Rice Research Institute Key Laboratory of Application and Safety Control of Genetically Modified CropsAcademy of Agricultural SciencesSouthwest UniversityChongqing 400715China State Key Laboratory of Rice Biology and Breeding Key Laboratory for Zhejiang Super Rice ResearchChina National Center for Rice ImprovementChina National Rice Research InstituteHangzhou 311401ZhejiangChina

A dynamic plant architecture is the basis of plant adaptation to changing *** many genes regulating leaf rolling have been identified,genes directly associated with water homeostasis are largely ***,we isolated a rice mutant,dynamic leaf rolling 1(dlr1),characterized by‘leaf unfolding in the morning-leaf rolling at noon-leaf unfolding in the evening’during a sunny *** content was decreased in rolled leaves and water sprayed on leaves caused reopening,indicating that in vivo water deficiency induced the leaf ***-based cloning and expression tests demonstrated that an A1400G single base mutation in Oryza sativa Polygalacturonase 1(OsPG1)/PHOTO-SENSITIVE LEAF ROLLING 1(PSL1)was responsible for the dynamic leaf rolling phenotype in the dlr1 ***1 encodes a polygalacturonase,one of the main enzymes that degrade demethylesterified homogalacturonans in plant cell ***1 was constitutively expressed in various tissues and was enriched in *** of the OsPG1 gene exhibited defects in stomatal closure and decreased stomatal density,leading to reduced transpiration and excessive water loss under specific conditions,but had normal root *** analysis revealed that mutation of OsPG1 led to reduced pectinase activity in the leaves and increased demethylesterified homogalacturonans in guard *** findings reveal a mechanism by which OsPG1 modulates water homeostasis to control dynamic leaf rolling,providing insights for plants to adapt to environmental variation.

关键词： Photosynthesis Stomata Transpiration Leaf rolling

Improvement of blue InGaN light-emitting diodes with gradually increased barrier heights from n- to p-layers

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Frontiers of Optoelectronics 2013年第4期6卷 429-434页

作者： wu TIAN Xiong HUI Yang LI Jiangnan DAI Yanyan FANG zhihao wu Changqing CHEN wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China

The advantages of blue InGaN light-emitting diodes （LED） with the active region of gradually increased barrier heights from n- to p-layers are studied. The energy band diagram, hole concentration, electrostatic field near the electron blocking layer （EBL）, and the internal quantum efficiency （IQE） are investigated by Crosslight simulation program. The simulation results show that the structure with gradually increased barrier heights has better performance over the equal one, which can be attributed to the mitigated polarization effect near the interface of the last barrier/EBL due to less interface polarization charges. Moreover, reduced barrier height toward the n-layers is beneficial for holes injection and transportation in the active region. As a result, holes are injected into the active region more efficiently and distributed uniformly in the quantum wells, with which both the IQE and the total lighting power are increased. Although it can lead to the broadening of the spontaneous emission spectrum, the increase is slight such that it has little effect on the application in solid-state lighting.

关键词： InGaN light-emitting diodes (LED) polariza-tion effect gradual barrier height

Preparation of lithium-ion battery anode materials from graphitized spent carbon cathode derived from aluminum electrolysis

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International Journal of Minerals,Metallurgy and Materials 2024年第11期31卷 2466-2475页

作者： zhihao Zheng Mingzhuang Xie Guoqing Yu Zegang wu Jingjing Zhong Yi Wang Hongliang Zhao Fengqin Liu State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

Graphitized spent carbon cathode(SCC)is a hazardous solid waste generated in the aluminum electrolysis *** this study,a flotation-acid leaching process is proposed for the purification of graphitized SCC,and the use of the purified SCC as an anode material for lithium-ion batteries is *** flotation and acid leaching processes were separately optimized through one-way *** maximum SCC carbon content(93wt%)was achieved at a 90%proportion of−200-mesh flotation particle size,a slurry concentration of 10wt%,a rotation speed of 1600 r/min,and an inflatable capacity of 0.2 m^(3)/h(referred to as FSCC).In the subsequent acid leaching process,the SCC carbon content reached 99.58wt%at a leaching concentration of 5 mol/L,a leaching time of 100 min,a leaching temperature of 85°C,and an HCl/FSCC volume ratio of 5:*** purified graphitized SCC(referred to as FSCC-CL)was utilized as an anode material,and it exhibited an initial capacity of 348.2 mAh/g at 0.1 C and a reversible capacity of 347.8 mAh/g after 100 ***,compared with commercial graphite,FSCC-CL exhibited better reversibility and cycle ***,purified SCC is an important candidate for anode material,and the flotation-acid leaching purification method is suitable for the resourceful recycling of SCC.

关键词： graphitized spent carbon cathode hazardous solid waste flotation acid leaching lithium-ion batteries

An Interfacial Gel Electrode Patch with Tunable Hydrogen Bond Network for Electromyographic Sensing and Discrimination

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CCS Chemistry 2024年第2期6卷 450-464页

作者： Jianliang Li zhihao Liu Yongtao Tang Jiabao Xian Chaofan He Hao wu Mingjie Liu Fengyu Li College of Chemistry and Materials Science Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and ApplicationsSu Bingtian Center for Speed Research and TrainingJinan UniversityGuangzhou 510632 School of Chemistry Beihang UniversityBeijing 100191

The sensitivity and fidelity of surface electromyography(sEMG)signal monitoring is critical for muscle status and fatigue assessment,prosthetic control,and gesture ***,the incompatible skin-electrode interface and complex electrophysiological environment restrict the sensitive acquisition and accurate analysis of sEMG *** on the impedance of the skin-electrode interface issue,we developed an interfacial gel electrode patch with a tunable hydrogen bond network to simultaneously achieve a conformal interface,suitable adhesion,and high conductivity for sEMG signal *** exploiting hydroxyethylidene diphosphonic acid(HEDP)and 2-hydroxyphosphono-acetic acid(HPAA)as hydrogen bonding regulators were introduced into the polyvinyl alcohol(PVA)-based hydrogel network to regulate the hydrogen bond cross-linking *** a result,the balance of elastic modulus,adhesion,and electrical conductivity of PVA-HEDP-HPAA(PHH)hydrogel are *** reliable electrodeskin interface is manipulated to achieve conformal contact by matching the elastic modulus,reducing the gap of electrode-skin interface by adhesion,and promoting ion and electron conduction by electrical *** PHH electrode patches exhibit a lower interfacial impedance(12.56 kΩ)and a signal-to-noise ratio of 38.09±1.28 dB for accurate analysis of muscle strength and evaluation of the fatigue *** the assistance of the artificial neural network algorithm,seven gestures can be recognized with 100%prediction *** interfacial gel electrode patch contributes a bio-matching electrophysiological platform for prosthetic control,human–machine interaction,and clinical or athletic auxiliary monitoring.

关键词： hydrogel electrode hydrogen bond network surface electromyography muscle fatigue artificial neural network gesture recognition

基于变结构Copula模型的股市与汇市间波动溢出效应研究

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金融发展研究 2015年第2期 3-7页

作者：吴智昊浙江工商大学浙江杭州310018

本文采用变结构Copula模型对我国股、汇市间的波动溢出效应进行研究。利用二元正态Copula函数的时变相关系数得出美元对人民币汇率与沪深300指数间相关关系的变结构点,再利用混合Copula模型分段检验波动溢出效应。实证结果表明,汇改以来... 详细信息

本文采用变结构Copula模型对我国股、汇市间的波动溢出效应进行研究。利用二元正态Copula函数的时变相关系数得出美元对人民币汇率与沪深300指数间相关关系的变结构点,再利用混合Copula模型分段检验波动溢出效应。实证结果表明,汇改以来,美元对人民币汇率与沪深300指数间存在着长期而显著的波动溢出效应。在次贷危机发生期间,美元对人民币汇率与沪深300指数间相关关系的变结构点增多,尾部相关性增强,两市间的波动溢出效应显著增强。因此,应加强对波动溢出传导中介的管理,减轻波动溢出效应的负面影响。

关键词：人民币汇率波动溢出效应变结构Copula模型

Alteration of Gene Expression Profile and Signal Pathway Induced by Methylseleninic Acid in Human Lung Cancer Cell Lines

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中国肺癌杂志 2009年第6期12卷 476-477页

作者： Ting WANG zhihao wu Hongyu LIU Jun CHEN Liya SUN Qjnghua ZHOU Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment Tianjin Lung Cancer Institute Tianjin Medical University Hospital Tianjin 300052 China

Objective and Methods Lung cancer has a fastest growing rate of morbidity and mortality among malignant tumors and poses a great threat to the human health. Chemotherapy, as one

关键词：肺癌治疗疗效临床

Visualization of the sound scattering by a cylinder

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Chinese Journal of Acoustics 1993年第1期12卷 9-18页

作者： wu zhihao, ZHOU Genxiang and FENG Shaosong (Shanghai Acoustics Laboratory, Academla Sinica. Shanghai 200032)

The schlieren method is applied to visualizing the sound scattering of a cylinder immersed in the liquids. Images of the echoes, caused by normal and oblique incidence from a cylinder, are obtained for two kinds of liquids: (1) the liquid is composed of a transparent liquid; and (2) the liquid is composed of two non-mixable transparent liquids. It is found experimentally that the echo can be caused by the discontinaites in the shadow zone. This fact is utilized to demonstrate the locus of the helical surface wave creeping along the surface of the cylinder. For such cases the three-dimensional image can be described by this method and has not to use the system with special appliances and complex algorithm.

关键词： Scattering Greeping waves Schlieren Method.