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Evicting and filling attack for linking multiple network addresses of Bitcoin nodes

Cybersecurity 2024年第3期7卷 49-68页

作者： Huashuang Yang Jinqiao Shi Yue Gao Xuebin wang Yanwei Sun Ruisheng Shi dongbin wang School of Cyberspace Security Bejing University of Posts and TelecommunicationsBeijingChina Tsinghua University Bejing 100084China Institute of Information Engineering Chinese Academy of SciencesBeijingChina

Bitcoin is a decentralized P2P *** supports users to use pseudonyms instead of network addresses to send and receive transactions at the data layer,hiding users'real network *** transaction tracing attack cuts through the network layer to directly associate each transaction with the network address that issued it,thus revealing the sender's network *** this attack can be mitigated by Bitcoin's network layer privacy *** Bitcoin protects the unlinkability of Bitcoin addresses and there may be a many-to-one relation-ship between addresses and nodes,transactions sent from the same node via different addresses are seen as com-ing from different nodes because attackers can only use addresses as node *** this paper,we proposed the evicting and flling attack to expose the correlations between addresses and cluster transactions sent from different addresses of the same *** attack exploited the unisolation of Bitcoin's incoming connection processing *** particular,an attacker can utilize the shared connection pool and deterministic connection eviction strategy to infer the correlation between incoming and evicting connections,as well as the correlation between releasing and flling *** on inferred results,different addresses of the same node with these connections can be linked together,whether they are of the same or different network *** designed a multi-step attack procedure,and set reasonable attack parameters through analyzing the factors that affect the attack effciency and *** mounted this attack on both our self-run nodes and multi-address nodes in real Bitcoin network,achieving an aver-age accuracy of 96.9% and 82%,***,we found that the attack is also applicable to Zcash,Litecoin,Dogecoin,Bitcoin Cash,and *** analyzed the cost of network-wide attacks,the application scenario,and proposed countermeasures of this attack.

关键词： Security and privacy Bitcoin Address linking

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胆总管结石继发急性重症胆管炎患者行内镜下逆行胆胰管造影术治疗的效果分析

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中外医药研究 2024年第16期3卷 42-44页

作者：王东斌遵义市桐梓县人民医院普外科贵州遵义563200

目的:分析胆总管结石继发急性重症胆管炎患者行内镜下逆行胆胰管造影术(ERCP)治疗的效果。方法:选取2023年2月—2024年2月遵义市桐梓县人民医院收治的胆总管结石继发急性重症胆管炎患者60例为研究对象,随机分为对照组与研究组,各30例。... 详细信息

目的:分析胆总管结石继发急性重症胆管炎患者行内镜下逆行胆胰管造影术(ERCP)治疗的效果。方法:选取2023年2月—2024年2月遵义市桐梓县人民医院收治的胆总管结石继发急性重症胆管炎患者60例为研究对象,随机分为对照组与研究组,各30例。对照组行腹腔镜下胆总管探查取石术治疗,研究组行ERCP治疗。比较两组时间指标、炎性指标及肝胆生化指标水平、并发症发生情况。结果:研究组手术时间及住院时间短于对照组,腹痛缓解时间、发热缓解时间、寒战缓解时间、黄疸消退时间早于对照组,差异有统计学意义(P0.05)。两组并发症发生率比较,差异无统计学意义(P>0.05)。结论:ERCP治疗胆总管结石继发急性重症胆管炎的效果显著,可缩短手术时间,加快恢复速度,减轻炎症,改善肝胆功能,且不会增加并发症发生率。

关键词：急性重症胆管炎胆总管结石内镜下逆行胆胰管造影术

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Electrochemical process for recovery of metallic Mn from waste LiMn_(2)O_(4)-based Li-ion batteries in NaCl−CaCl_(2)melts

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International Journal of Minerals,Metallurgy and Materials 2022年第3期29卷 473-478页

作者： Jinglong Liang dongbin wang Le wang Hui Li Weigang Cao Hongyan Yan College of Metallurgy and Energy North China University of Science and TechnologyTangshan 063210China

new method is proposed for the recovery of Mn via the direct electrochemical reduction of LiMn_(2)O_(4) from the waste of lithium-ion batteries in NaCl−CaCl_(2) melts at 750°*** results show that the LiMn_(2)O_(4) reduction process by the electrochemical method on the coated electrode surface occurs in three steps:Mn(IV)→Mn(III)→Mn(II)→*** products of this electro-deoxidation are CaMn2O4,MnO,(MnO)x(CaO)1−x,and *** Mn appears when the electrolytic voltage increases to 2.6 V,which indicates that increasing the voltage may promote the deoxidation reaction *** the advancement of the three-phase interline(3PI),electric deoxygenation gradually proceeds from the outer area of the crucible to the *** high voltage,the kinetic process of the reduction reaction is accelerated,which generates double 3PIs at different stages.

关键词： lithium-ion-battery waste electrochemistry of melts Mn recovery electro-deoxidation lithium manganate

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QoS-oriented packet scheduling scheme for opportunistic networks

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The Journal of China Universities of Posts and Telecommunications 2017年第3期24卷 51-57页

作者： Yao Wenbin Chen Yin Zong Ming wang dongbin Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia Beijing University of Posts and Telecommunications School of Computer Science Beijing University of Posts and Telecommunications Yingcai Honors College University of Electronic Science and Technology of China National Engineering Laboratory for Mobile Network Security Beijing University of Posts and Telecommunications

The unique characteristics of opportunistic networks （ONs）, such as intermittent connectivity and limited network resources, makes it difficult to support quality of service （QoS） provisioning, particularly to guarantee delivery ratio and delivery delay. In this paper, we propose a QoS-oriented packet scheduling scheme （QPSS） to make decisions for bundle transmissions to satisfy the needs for the delivery ratio and delivery delay constraints of bundles. Different from prior works, a novel bundle classification method based on the reliability and latency requirements is utilized to decide the traffic class of bundles. A scheduling algorithm of traffic class and bundle redundancy is used to maintain a forwarding and dropping priority queue and allocate network resources in QPSS. Simulation results indicate that our scheme not only achieves a higher overall delivery ratio but also obtains an approximate 14% increase in terms of the amount of eligible bundles.

关键词： opportunistic networks packet scheduling QoS traffic class of bundles

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基于电动单梁起重机故障分析的控制电路优化设计

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中国特种设备安全 2024年第7期40卷 49-51,81页

作者：王秀民王冬彬高力李颖东营市特种设备检验研究院东营257000

针对电动单梁起重机在无操作状态下缺少运行按钮开关接通和接触器主触点粘连的监测保护功能的缺陷,通过在控制电路中增加由时间继电器组成的监测回路,借助各功能的运行按钮的常闭触点与此功能对应接触器的常开触点在运行过程中两者存在... 详细信息

针对电动单梁起重机在无操作状态下缺少运行按钮开关接通和接触器主触点粘连的监测保护功能的缺陷,通过在控制电路中增加由时间继电器组成的监测回路,借助各功能的运行按钮的常闭触点与此功能对应接触器的常开触点在运行过程中两者存在的逻辑关系,实现无操作状态下运行按钮开关接通和接触器主触点粘连隐患的监测保护功能。

关键词：电动单梁起重机接触器故障分析

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3种佐剂对猪口蹄疫-伪狂犬二联基因缺失灭活疫苗的免疫效果评价

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黑龙江畜牧兽医 2024年第11期 95-100页

作者：王冬斌吴涵贾文青李洪庆白满达张七斤内蒙古农业大学兽医学院呼和浩特010018 必威安泰生物科技有限公司呼和浩特011500

为了评价ISA 201、ISA 206和SW 3种佐剂对猪口蹄疫-伪狂犬二联基因缺失灭活疫苗的免疫增强效果,试验采用PCR方法鉴别口蹄疫O/rV-1株+A/rV-2株和伪狂犬RPVS1601-1株是否存在3B基因和gE基因缺失;将口蹄疫O/rV-1株+A/rV-2株和伪狂犬RPVS160... 详细信息

为了评价ISA 201、ISA 206和SW 3种佐剂对猪口蹄疫-伪狂犬二联基因缺失灭活疫苗的免疫增强效果,试验采用PCR方法鉴别口蹄疫O/rV-1株+A/rV-2株和伪狂犬RPVS1601-1株是否存在3B基因和gE基因缺失;将口蹄疫O/rV-1株+A/rV-2株和伪狂犬RPVS1601-1株抗原灭活并制成水相,分别与3种佐剂混合制成相应的灭活疫苗,使各抗原最终含量为口蹄疫O/rV-1株和A/rV-2株146S 10μg/头份,伪狂犬RPVS1601-1株1×10^(9)TCLD50/头份。将70只昆明小鼠随机分成ISA 201佐剂组(20只)、ISA 206佐剂组(20只)、SW佐剂组(20只)和PBS对照组(10只),肌肉注射制备的疫苗,首次免疫后2周进行二次免疫,首次免疫后第0,1,2,3,4,5,6周时进行断尾采血,收集血清,用ELISA方法检测白细胞介素-2(IL-2)、IL-4、γ干扰素(IFN-γ)含量和口蹄疫(O/rV-1型、A/rV-2型)抗体及伪狂犬抗体水平;并在首免2,4,6周时每组随机各取3只小鼠进行眼眶采血,用流式细胞仪检测CD4+和CD8+细胞百分比。结果表明:第3周时,ISA 201佐剂组的小鼠血清IL-2含量最高,显著高于ISA 206佐剂组和SW佐剂组(P<0.05);ISA 201佐剂组IFN-γ含量最高,三个佐剂组之间差异显著(P<0.05)。另外,所有佐剂组的IL-4含量在第2周开始显著高于PBS对照组(P<0.05)。第1~6周,ISA 201佐剂组抗体含量显著高于ISA 206佐剂组和SW佐剂组(P<0.05)。三个佐剂组CD4+/CD8+比值均显著高于PBS对照组(P<0.05),且ISA 201佐剂组的比值显著高于ISA 206佐剂组和SW佐剂组(P<0.05)。说明三种佐剂均能不同程度地提升猪口蹄疫-伪狂犬二联基因缺失灭活疫苗的免疫效果,其中ISA 201佐剂的提升效果最好。

关键词：猪口蹄疫-伪狂犬二联基因缺失灭活疫苗佐剂免疫效果 CD4+ CD8+ 细胞因子

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Network Traffic Generation Based on Statistical Packet-Level Characteristics

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China Communications 2015年第S2期12卷 144-148页

作者： wang dongbin ZHUO Weihan ZHANG Junhui WU Kexin OUYANG Wen School of Software Engineering Beijing University of Posts and Telecommunications National Engineering Laboratory for Mobile Network Security (BUPT) Key Laboratory of Trustworthy Distributed Computing and Service (BUPT) Ministry of Education

Network traffic is very important for testing network equipment, network services, and security products. A new method of generating traffic based on statistical packet-level characteristics is proposed. In every time unit, the generator determines the sent packets number, the type and size of every sent packet according to the statistical characteristics of the original traffic. Then every packet, in which the protocol headers of transport layer, network layer and ethernet layer are encapsulated, is sent via the responding network interface card in the time unit. The results in the experiment show that the correlation coefficients between the bandwidth, the packet number, packet size distribution, the fragment number of the generated network traffic and those of the original traffic are all more than 0.96. The generated traffic and original traffic are very highly related and similar.

关键词： network traffic generation packet-level traffic characteristics

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Arsenic removal from acidic industrial wastewater by ultrasonic activated phosphorus pentasulfide

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中国化学工程学报:英文版 2023年第8期60卷 46-52页

作者： Bo Yu Guang Fu Xinpei Li Libo Zhang Jing Li Hongtao Qu dongbin wang Qingfeng Dong Mengmeng Zhang Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China Kunming Key Laboratory of Special Metallurgy Kunming University of Science and TechnologyKunming 650093China Key Laboratory of Unconventional Metallurgy Ministry of EducationKunming 650093China Yunnan Chihong Zn&Ge Co. LtdQujing 655011China

Arsenic is one of the main harmful elements in industrial *** to remove arsenic has always been one of the research hotspots in academic *** the process of arsenic removal by traditional sulfuration,the use of traditional sulfurizing agent will introduce new metal cations,which will affect the recycling of *** this study,phosphorus pentasulfide (P_(2)S_(5)) was used as sulfurizing agent,which hydrolyzed to produce H_(3)PO_(4) and H_(2)S without introducing new metal *** effect of ultrasound on arsenic removal by P_(2)S_(5) was *** the action of ultrasound,the utilization of P_(2)S_(5) was improved and the reaction time was *** effects of S/As molar ratio and reaction time on arsenic removal rate were investigated under ultrasonic *** enhanced heat and mass transfer so that the arsenic removal rate of 94.5%could be achieved under the conditions of S/As molar ratio of 2.1:1 and reaction time of 20 *** the first 60 min,under the same S/As molar ratio and reaction time,the ultrasonic hydrolysis efficiency of P_(2)S_(5) was *** is because P_(2)S_(5) forms ([(P_(2)S_(4))])^(2+)under the ultrasonic action,and the structure is damaged,which is easier to be *** addition,the precipitation after arsenic removal was characterized and analyzed by X-ray diffraction,scanning electron microscope-energy dispersive spectrometer,X-ray fluorescence spectrometer and X-ray photoelectron *** research avoids the introduction of metal cations in the arsenic removal process,and shortens the reaction time.

关键词： Arsenic removal Mass transfer Precipitation Waste water Ultrasound

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Measurement of atmospheric nanoparticles:Bridging the gap between gas-phase molecules and larger particles

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Journal of Environmental Sciences 2023年第1期123卷 183-202页

作者： Chao Peng Chenjuan Deng Ting Lei Jun Zheng Jun Zhao dongbin wang Zhijun Wu Lin wang Yan Chen Mingyuan Liu Jingkun Jiang Anpei Ye Maofa Ge Weigang wang State Key Laboratory for Structural Chemistry of Unstable and Stable Species Beijing National Laboratory for Molecular Sciences(BNLMS)CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China School of Environment Science and Engineering Nanjing University of Information Science&TechnologyNanjing 210044China School of Atmospheric Sciences Sun Yat-sen UniversityZhuhaiGuangdong 519082China State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3) Department of Environmental Science&EngineeringFudan UniversityShanghai 200433China Key Laboratory for the Physics and Chemistry of Nanodevices Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China University of Chinese Academy of Sciences Beijing 100049China

Atmospheric nanoparticles are crucial components contributing to fine particulate matter(PM_(2.5)),and therefore have significant effects on visibility,climate,and human *** to the unique role of atmospheric nanoparticles during the evolution process from gas-phase molecules to larger particles,a number of sophisticated experimental techniques have been developed and employed for online monitoring and characterization of the physical and chemical properties of atmospheric nanoparticles,helping us to better understand the formation and growth of new *** this paper,we firstly review these state-of-the-art techniques for investigating the formation and growth of atmospheric nanoparticles(e.g.,the gas-phase precursor species,molecular clusters,physicochemical properties,and chemical composition).Secondly,we present findings from recent field studies on the formation and growth of atmospheric nanoparticles,utilizing several advanced ***-more,perspectives are proposed for technique development and improvements in measuring atmospheric nanoparticles.

关键词： Nanoparticle Measurement techniques Size distributions Physical properties Chemical composition

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Cordierite Ceramics Prepared from Poor Quality Kaolin for Electric Heater Supports: Sintering Process, Phase Transformation, Microstructure Evolution and Properties

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Journal of Wuhan University of Technology(Materials Science) 2018年第3期33卷 598-607页

作者：吴建锋陆成龙 XU Xiaohong ZHANG Yaxiang wang dongbin ZHANG Qiankun State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology

To efficiently utilize the kaolin, an economical way of preparing cordierite ceramic with high performance for electric heater supports was put forward. In this study, sintering process, phase transformation, microstructure evolutions were systematically studied by heating microscope, X-ray diffraction, scanning electronic microscope and thermal analysis. Properties（physical properties, electrical properties and coefficient of thermal expansion（CTE）） were tested for comprehensive performance evaluation. The results showed that the utilization of poor quality kaolin broadened the firing range of cordierite ceramic which was from 1 200 to 1 380 ℃. Microstructure becomes loose with increasing of the pore size, which had significant influence on bending strength and electrical properties. High content of K2 O in poor quality kaolin was the reason for liquid phase generation in sintering process, which further leads to microstructural changes. The cordierite ceramic sintered at 1 320 ℃ had the properties as follows： CTE of 1.98×10^（-6） ℃^（-1）（500 ℃）, bending strength of 90 MPa, apparent porosity of 15.1%, dielectric constant of 7.5（100 Hz）, and volume resistivity of 1.05×109 Ω·cm（100 Hz）. The comprehensive properties are very suitable for use as electric heater supports.

关键词： cordierite ceramic poor quality kaolin microstructure-final electrical properties electric heater supports

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