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Two-dimensional-lag complex logistic map with complex parameters and its encryption application

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Chinese Physics B 2024年第5期33卷 324-335页

作者：张芳芳武金波寇磊马凤英吴黎明张雪 School of Information and Automation Engineering Qilu University of Technology (Shandong Academy of Sciences)Jinan 250353China Institute of Oceanographic Instrumentation Qilu University of Technology (Shandong Academy of Sciences)Qingdao 266000China

With the rapid development of internet technology,security protection of information has become more and more prominent,especially information *** the great advantages of chaotic encryption,we propose a 2D-lag complex logistic map with complex parameters(2D-LCLMCP)and corresponding encryption ***,we present the model of the 2D-LCLMCP and analyze its chaotic properties and system stability through fixed points,Lyapunov exponent,bifurcation diagram,phase diagram,***,a block cipher algorithm based on the 2D-LCLMCP is proposed,the plaintext data is preprocessed using a pseudorandom sequence generated by the *** on the generalized Feistel cipher structure,a round function F is constructed using dynamic S-box and DNA encoding rules as the core of the block cipher *** generalized Feistel cipher structure consists of two F functions,four XOR operations,and one permutation operation per *** symmetric dynamic round keys that change with the plaintext are generated by the ***,experimental simulation and performance analysis tests are *** results show that the block cipher algorithm has low complexit,good diffusion and a large key *** the block length is 64 bits,only six rounds of encryption are required to provide sufficient security and robustness against cryptographic attacks.

关键词： logistic map block ciphers chaotic system encryption

Hot Corrosion Behavior of Hf-Doped NiAl Coating in the Mixed Salt of Na_(2)SO_(4)+K_(2)SO_(4)at 900℃

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金属学报:英文版 2023年第9期36卷 1409-1420页

作者： W.L.Zhang W.Li L.B.Fu X.Peng J.Sun S.M.Jiang J.Gong C.Sun Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials science and Engineering University of Science and Technology of ChinaShenyang110016China Advanced research Institute for Multidisciplinary science Qilu University of Technology(Shandong Academy of Sciences)Jinan250353China

The hot corrosion behavior of the NiAl coating and the 5Hf-NiAl coating induced by mixed salt at 900℃was *** with the NiAl coating,the 5Hf-NiAl coating exhibited superior hot corrosion resistance because the addition of Hf promoted the formation of protective oxide scale and reduced the growth rate of oxide ***,internal sulfides were not present in the 5Hf-NiAl coating after hot corrosion for 140 *** exhibited different distribution in the two coatings since the addition of Hf changed the hot corrosion process of the *** and Ti in the 5Hf-NiAl coating trapped and captured sulfur,preventing the penetration of sulfur into the *** hot corrosion mechanism of the two coating and the effects of Hf on this process were discussed in this work.

关键词： Hot corrosion Hafnium Oxide scale Titanium Sulfide

Passability test and simulation of sand control string with natural gas hydrates completion in large curvature hole

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China Geology 2023年第1期6卷 27-36页

作者： Hao-xian Shi Yan-jiang Yu Ru-lei Qin Jun-yu Deng Yi-xin Zhong Li-qiang Qi Bin Li Bo Fan Qiu-ping Lu Jian Wang Kui-wei Li Ye-cheng Gan Gen-long Chen Hao-wen Chen Zhi-ming Wu Guangzhou Marine Geological Survey China Geological SurveyGuangzhou 510075China National Engineering research Center of Gas Hydrate Exploration and Development Guangzhou 510075China Southern Marine science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Institute of Exploration Technology Chinese Academy of Geological SciencesLangfang 065000China CNPC Offshore Engineering Company Limited Tianjin 345000China Starse Energy Technology Co. LtdShanghai 201600China

To meet the requirements of marine natural gas hydrate exploitation,it is necessary to improve the penetration of completion sand control string in the large curvature *** this study,large curvature test wells were selected to carry out the running test of sand control string with pre-packed ***,the running simulation was performed by using the Landmark *** results show that the sand control packer and screen can be run smoothly in the wellbore with a dogleg angle of more than 20°/30 m and keep the structure ***,the comprehensive friction coefficient is 0.4,under which and the simulation shows that the sand control string for hydrate exploitation can be run *** findings have important guiding significance for running the completion sand control string in natural gas hydrate exploitation.

关键词： Natural gas hydrates(NGHs) Completion sand control string Large curvature borehole Passability test Friction coefficient Oil and gas exploration engineering NGHs exploration trial engineering

Design and feasibility analysis of a new completion monitoring technical scheme for natural gas hydrate production tests

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China Geology 2023年第3期6卷 466-475页

作者： Qiu-ping Lu Yan-jiang Yu Xie Wen-wei Jin-qiang Liang Jing-an Lu Ben-chong Xu Hao-xian Shi Hao-yu Yu Ru-lei Qin Xing-chen Li Bin Li Guangzhou Marine Geological Survey China Geological SurveyMinistry of Natural ResourcesGuangzhou 510075China Southern Marine science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Institute of Exploration Techniques China Geological SurveyMinistry of Natural ResourcesLangfang 065000China

As a prerequisite and a guarantee for safe and efficient natural gas hydrates(NGHs)exploitation,it is imperative to effectively determine the mechanical properties of NGHs reservoirs and clarify the law of the change in the mechanical properties with the dissociation of NGHs during NGHs production tests by *** on the development of Japan’s two offshore NGHs production tests in vertical wells,this study innovatively proposed a new subsea communication technology-accurate directional connection using a wet-mate *** helps to overcome the technical barrier to the communication between the upper and lower completion of offshore *** this new communication technology,this study explored and designed a mechanical monitoring scheme for lower completion(sand screens).This scheme can be used to monitor the tensile stress and radial compressive stress of sand screens caused by NGHs reservoirs in real time,thus promoting the technical development for the rapid assessment and real-time feedback of the in-situ mechanical response of NGHs reservoirs during offshore NGHs production tests by depressurization.

关键词： Natural gas hydrates Depressurization test Wet-mate Directional connection Lower completion monitoring In-situ mechanical response of reservoirs Oil-gas exploration engineering The South China Sea

Intercalation-deintercalation design in MXenes for high-performance supercapacitors

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Nano research 2022年第4期15卷 3213-3221页

作者： Zhenjiang Li Jun Dai Yiran Li Changlong Sun Alan Meng Renfei Cheng Jian Zhao Minmin Hu Xiaohui Wang School of Materials science and Engineering Qingdao University of Science and TechnologyQingdao 266061China College of Electromechanical Engineering Qingdao University of Science and TechnologyQingdao 266061China Department of Mechanical Engineering City University of Hong KongHong Kong 999077China State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Shenyang National Laboratory for Materials science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

MXene is a new intercalation pseudocapacitive electrode material for supercapacitor *** fast ion diffusion is significantly essential for MXene to achieve excellent electrochemical *** expansion of interlayer void by traditional spontaneous species intercalation always leads to a slight increase in capacitance due to the existence of species sacrificing the smooth diffusion of electrolyte ***,an effective intercalation-deintercalation interlayer design strategy is proposed to help MXene achieve higher *** cation intercalation leads to the expansion of interlayer *** electrochemical cation extraction,intercalated cations are deintercalated mostly,leaving a small number of cations trapped in the interlayer silt and serving as pillars to maintain the interlayer space,offering an open,unobstructed interlayer space for better ion migration and ***,a preferred surface with more-O terminations for redox reaction is created due to the reaction between cations and-OH *** a result,the processed MXene delivers a much improved capacitance compared to that of the original Ti_(3)C_(2)T_(x)electrode(T stands for the surface termination groups,such as-OH,-F,and-O).This study demonstrates an improvement of electrochemical performance of MXene electrodes by controlling the interlayer structure and surface chemistry.

关键词： MXene electrochemical ion intercalation−deintercalation interlayer design supercapacitor energy storage

Atomic insights of electronic states engineering of GaN nanowires by Cu cation substitution for highly efficient lithium ion battery

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Journal of Energy Chemistry 2022年第4期31卷 46-54页

作者： Zhenjiang Li Kesheng Gao Ying Han Shiqi Ding Yanglansen Cui Minmin Hu Jian Zhao Meng Zhang Alan Meng Jimmy Yun Zhiming Liu Da-Wei Wang Changlong Sun College of Materials science and Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina School of Chemical Engineering The University of New South WalesSydneyNSW 2052Australia Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials College of Electromechanical EngineeringQingdao University of Science and TechnologyQingdao 266061ShandongChina Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life science MOECollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina Qingdao International Academician Park research Institute QingdaoShandong 266000China School of Materials science and Engineering Beihang University100191 BeijingChina School of Materials science and Engineering Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina

Electronic engineering of gallium nitride(Ga N) is critical for enhancement of its electrode *** this work, copper(Cu) cation substituted Ga N(Cu-Ga N) nanowires were fabricated to understand the electronically engineered electrochemical performance for Li ion storage. Cu cation substitution was revealed at atomic level by combination of X-ray photoelectron spectroscopy(XPS), X-ray absorption fine structure(XAFS), density functional theory(DFT) simulation, and so forth. The Cu-Ga N electrode delivered high capacity of 813.2 m A h g^(-1) at 0.1 A g^(-1) after 200 cycles, increased by 66% relative to the unsubstituted Ga N electrode. After 2000 cycles at 10 A g^(-1),the reversible capacity was still maintained at326.7 m A h g^(-1). The DFT calculations revealed that Cu substitution introduced the impurity electronic states and efficient interatomic electron migration, which can enhance the charge transfer efficiency and reduce the Li ion adsorption energy on the Cu-Ga N electrode. The ex-situ SEM, TEM, HRTEM, and SAED analyses demonstrated the reversible intercalation Li ion storage mechanism and good structural stability. The concept of atomic-arrangement-assisted electronic engineering strategy is anticipated to open up opportunities for advanced energy storage applications.

关键词： Cu cation substitution Electronic states engineering GaN nanowires Lithium-ion batteries DFT

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基于成像能流矢量的弹性波能量成像条件

Applied Geophysics 2022年第2期19卷 258-270,308,309页

作者：张晓语郑轶何传林梁展源齐鲁工业大学(山东省科学院)山东省科学院海洋仪器仪表研究院青岛266061 齐鲁工业大学(山东省科学院)海洋技术科学学院青岛266061

弹性波逆时偏移方法可有效处理多分量地震数据,其中能量互相关成像条件可实现标量成像结果提取。但是,基于一阶弹性波方程的能量互相关成像条件存在背景速度依赖度高等问题。为此,本文基于能量密度与能流矢量间定量关系利用能流矢量实... 详细信息

弹性波逆时偏移方法可有效处理多分量地震数据,其中能量互相关成像条件可实现标量成像结果提取。但是,基于一阶弹性波方程的能量互相关成像条件存在背景速度依赖度高等问题。为此,本文基于能量密度与能流矢量间定量关系利用能流矢量实现无背景参数的弹性波场能量表征,结合震源端质点振动速度和检波端应力构建成像能流矢量和提出可以实现标量成像结果提取的弹性波能量成像条件。结合平面波解推导证明了弹性波能量成像条件的背向散射压制机理。数值实验表明,与矢量波场中标量成像条件相比,弹性波能量成像条件可以得到无背向散射的能量成像结果,且一定程度上可以降低背景速度依赖度,从而可有效处理海底多分量数据。

关键词：能流矢量能量密度弹性波能量成像条件背向散射

Isolation and Characterization of a Methomyl-Degrading Paracoccus ***-1

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Pedosphere 2009年第2期19卷 238-243页

作者： XU Jing-Liang WU Jun WANG Zhi-Chun WANG Kun LI Meng-Ying JIANG Jian-Dong HE Jian LI Shun-Peng Key Laboratory for Microbiological Engineering of Agricultural Environment of Ministry of Agriculture Nanjing Agricultural University Nanjing 210095 China Guangzhou Institute of Energy Conversion Key Laboratory of Renewable Energy and Gas Hydrate Chinese Academy of Sciences Guangzhou 510640 China

Methomyl,an extremely toxic pesticide,is widely used in agriculture.A strain named mdw-1 capable of degrading methomyl rapidly was successfully isolated from activated sludge in this *** could utilize methomyl as the sole carbon or nitrogen *** optimal temperature and medium pH for its growth and methomyl biodegradation were 30-C and 7.0,*** was identified as a Paracoccus *** to its morphological features,physiological and biochemical characteristics,and phylogenetic analysis based on the sequence of 16S *** chromatography-mass spectrometry (GC-MS)analysis showed that methomyl could be completely transformed to S-methyl-N-hydroxythioacetamidate in 10 h of incubation with the isolate mdw-1.

关键词：降解分离鉴定系统发育分析生理生化特性 rDNA序列藻活性污泥法

Facile pathway to generate agrochemical nanosuspensions integrating super-high load, eco-friendly excipients, intensified preparation process, and enhanced potency

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Nano research 2021年第7期14卷 2179-2187页

作者： Zhengxi Zhu Chuanhua Shao Yanlin Guo Jianguo Feng Chong Chen and Haibin Yang School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China School of Horticulture and Plant Protection Yangzhou UniversityYangzhou 225002China Testing Center Yangzhou UniversityYangzhou 225002China

An aqueous nanosuspension of agrochemicals unlike pharmaceutics has to achieve massive production in an effective way,capable to ensure sufficient profits in *** work implements the flash nanoprecipitation(FNP)technique to effectively generate agrochemical nanosuspension,anticipatedly overcoming such an ***,a broad spectrum fungicide,in either acetone or ethanol is used herein as a mode *** ensure a green and practical utilization,three kinds of commercially available and eco-friendly surfactants,i.e.,poly(ethylene glycol)-block-poly(lactic-co-glycolic acid)(PEG-b-PLGA),Tween 80 and alkyl polyglucosides(APGs),are employed for stabilizing the *** results show that the polymeric stabilizer,PEG-b-PLGA,has the best stabilization efficiency,and can maintain the particles below 100 nm for at least three *** azoxystrobin load of the nanoparticles reaches as high as 77 wt.%,beneficial to enhancing the biological ***,the FNP brings the particles a much smaller size,narrower size distribution,better size stability,and higher biological efficacy than the ones made via a traditional method of the drop and stir(DS).The nanosuspensions present superior fungicidal performances over a prevailing counterpart from *** study proves an enhanced biological potency and reduced dosage of agrochemical nanosuspension made via the FNP,indicating a remarkable advantage of the FNP over the conventional *** integration of a super-high load,eco-friendly excipients,intensified preparation process,enhanced potency,and reduced dosage creates a promising pathway to generate a green aqueous nanosuspension of agrochemicals.

关键词： turbulent confined jet mixing flash nanoprecipitation agrochemical nanosuspensions super-high loads high biological efficacy eco-friendly formulations