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Dynamic Analysis of Propulsion Mechanism Directly Driven by Wave Energy for Marine Mobile Buoy

Chinese Journal of Mechanical Engineering 2016年第4期29卷 710-715页

作者： yu zhenjiang ZHENG Zhongqiang YANG Xiaoguang CHANG Zongyu College of Engineering Ocean University of China Qingdao 266100 China Key Lab of Ocean Engineering of Shandong Province Qingdao 266100 China

Marine mobile buoy（MMB） have many potential applications in the maritime industry and ocean *** progress has been made,however the technology in this area is far from maturity in theory and faced with many difficulties in application.A dynamic model of the propulsion mechanism is very necessary for optimizing the parameters of the MMB,especially with consideration of hydrodynamic *** principle of wave-driven propulsion mechanism is briefly *** set a theory foundation for study on the MMB,a dynamic model of the propulsion mechanism of the MMB is *** responses of the motion of the platform and the hydrofoil are obtained by using a numerical integration method to solve the ordinary differential equations.A simplified form of the motion equations is reached by omitting terms with high order small *** relationship among the heave motion of the buoy,stiffness of the elastic components,and the forward speed can be obtained by using these simplified *** dynamic analysis show the following：The angle of displacement of foil is fairly small with the biggest value around 0.3 rad;The speed of mobile buoy and the angle of hydrofoil increased gradually with the increase of heave motion of buoy;The relationship among heaven motion,stiffness and attack angle is that heave motion leads to the angle change of foil whereas the item of speed or push function is determined by vertical velocity and angle,therefore,the heave motion and stiffness can affect the motion of buoy significantly if the size of hydrofoil is kept *** proposed model is provided to optimize the parameters of the MMB and a foundation is laid for improving the performance of the MMB.

关键词： propulsion mechanism marine mobile buoy dynamic model hydrodynamics Morision's equation

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Technologies for pollutant removal and resource recovery from blackwater:a review

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Frontiers of Environmental Science & Engineering 2023年第7期17卷 57-77页

作者： Wei Zhang Huaqiang Chu Libin Yang Xiaogang You zhenjiang yu Yalei Zhang Xuefei Zhou State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China

Blackwater(BW),consisting of feces,urine,flushing water and toilet paper,makes up an important portion of domestic *** improper disposal of BW may lead to environmental pollution and disease transmission,threatening the sustainabie development of the *** in nutrients and organic matter,BW could be treated for resource recovery and reuse through various *** at providing guidance for the future development of BW treatment and resource recovery,this paper presented a literature review of BWs produced in different countries and types of toilets,including their physiochemical characteristics,and current treatment and resource recovery *** degradation and utilization of carbon(C),nitrogen(N)and phosphorus(P)within BW are *** performance of different systems was classified and *** all the treating systems,biological and ecological systems have been long and widely applied for BW treatment,showing their universality and operability in nutrients and energy recovery,but they are either slow or ineffective in removal of some refractory *** processes,especially advanced oxidation processes(AOPs),are becoming increasingly extensively studied in BW treatment because of their high efficiency,especially for the removal of micropollutants and *** review could serve as an instructive guidance for the design and optimization of BW treatment technologies,aiming to help in the fulfilment of sustainable human excreta management.

关键词： Blackwater Water-flushing toilet Sanitation Nutrientrecovery Waterreuse Sustainable development

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Unraveling the reaction mechanism of low dose Mn dopant in Ni(OH)_(2) supercapacitor electrode

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Journal of Energy Chemistry 2021年第10期30卷 497-506,I0013页

作者： Zhiguo Zhang Hua Huo zhenjiang yu Lizhi Xiang Bingxing Xie Chunyu Du Jiajun Wang Geping Yin Key Laboratory of Materials for New Energy Conversion and Storage(Ministry of Industry and Information Technology) School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina

Mn doping is deemed as a promising strategy to improve the electrochemical performance of the a-Ni(OH)_(2)battery-type supercapacitor ***,the internal structure evolution,the pathways and the dynamics of the proton/intercalated anion migration,as well as the functioning mechanism of Mn dopant to stabilize the layered structure during cycles remain ***,we unveil that irreversible oxidization of Mn^(3+)at the initial CV cycles,which will remain as Mn^(4+)in the NiO_(2)slabs after the first oxidization to effectively suppress the phase transformation fromα-Ni(OH)_(2)/γ-NiOOH toβ-Ni(OH)_(2)/β-NiOOH and further maintain the structural integrity of *** a synergistic combination of theoretical calculations and various structural probes including XRD and^(2)H MAS solid state NMR,we decode the structure evolution and dynamics in the initial CV(cyclic voltammetry)cycles,including the absorption/desorption of hydrogen containing species,migration of intercalated anions/water molecules and the change of interlayer *** present work elucidates a close relationship between doping chemistry and structural reliability,paving a novel way of reengineering supercapacitor electrode materials.

关键词： Reaction mechanism Structure evolution ^(2)H MAS NMR Layered double hydroxides Local environments

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Understanding and unveiling the electro-chemo-mechanical behavior in solid-state batteries

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SusMat 2024年第2期4卷 75-88页

作者： yunlei Zhong Xia Zhang Yong Zhang Peng Jia yuebin Xi Lixing Kang zhenjiang yu Key Laboratory of Multifunctional Nanomaterials and Smart Systems Division of Advanced MaterialsSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouChina Institute of Applied Materials Helmholtz Centre Berlin for Materials and EnergyBerlinGermany School of Electronic and Information Engineering Changshu Institute of TechnologyChangshuJiangsuChina State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyJinanShandongChina

Solid-state batteries(SSBs)are attracting growing interest as long-lasting,thermally resilient,and high-safe energy storage *** an emerging area of battery chemistry,there are many issues with SSBs,including strongly reductive lithium anodes,oxidized cathodes(state of charge),the thermodynamic stability limits of solid-state electrolytes(SSEs),and the ubiquitous and critical *** this Review,we provided an overview of the main obstacles in the development of SSBs,such as the lithium anode|SSEs interface,the cathode|SSEs interface,lithium-ion transport in the SSEs,and the root origin of lithium intrusions,as well as the safety issues caused by the *** and overcoming these obstacles are crucial but also extremely challenging as the localized and buried nature of the intimate contact between electrode and SSEs makes direct detection *** reviewed advanced characterization techniques and discussed the complex ion/electron-transport mechanism that have been plaguing ***,we focused on studying and revealing the coupled electro-chemo-mechanical behavior occurring in the lithium anode,cathode,SSEs,and beyond.

关键词： advanced characterization techniques chemo-mechanical effects interface

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Unraveling the advances of trace doping engineering for potassium ion battery anodes via tomography

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Journal of Energy Chemistry 2021年第7期30卷 355-363页

作者： zhenjiang yu Ruhong Li Kedi Cai yudong Yao Junjing Deng Shuaifeng Lou Mi Lu Qinmin Pan Geping Yin Zaixing Jiang Jiajun Wang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina Liaoning Engineering Technology Research Center of Supercapacitor Bohai UniversityJinzhou 121013LiaoningChina Advanced Photon Source Argonne National LaboratoryLemontIL 60439USA Key Laboratory of Functional Materials and Applications of Fujian Province School of Materials Science and EngineeringXiamen University of TechnologyXiamen 361024FujianChina

Doping have been considered as a prominent strategy to stabilize crystal structure of battery materials during the insertion and removal of alkali *** instructive knowledge and experience acquired from doping strategies predominate in cathode materials,but doping principle in anodes remains ***,we demonstrate that trace element doping enables stable conversion-reaction and ensures structural integrity for potassium ion battery(PIB) *** a synergistic combination of X-ray tomography,structural probes,and charge reconfiguration,we encode the physical origins and structural evolution of electro-chemo-mechanical degradation in PIB *** the multiple ion transport pathways created by the orderly hierarchical pores from "surface to bulk" and the homogeneous charge distribution governed in doped nanodomains,the anisotropic expansion can be significantly relieved with trace isoelectronic element doping into the host lattice,maintaining particle mechanical *** work presents a close relationship between doping chemistry and mechanical reliability,projecting a new pathway to reengineering electrode materials for next-generation energy storage.

关键词： Trace doping Conversion-type electrode Structural evolution X-ray imaging Hierarchical integrity

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Ongoing Compressional Tectonism and Regional Seismic Hazard Revealed by the 2023 Mw6.1 Jishishan Earthquake

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Journal of Earth Science 2025年第1期36卷 275-290页

作者： Xiaoning Hu Chen yu zhenjiang Liu Yingying Zhang Zhenhong Li Chuang Song Bingquan Han Haihui Liu Jie Li College of Geological Engineering and Geomatics Chang'an UniversityXi'an 710054China Key Laboratory of Loess Xi'an 710054China Big Data Center for Geosciences and Satellites Chang'an UniversityXi'an 710054China Key Laboratory of Western China's Mineral Resources and Geological Engineering Ministry of EducationXi'an 710054China China Earthquake Networks Center Beijing 100045China

On December 18,2023,a Mw6.1 earthquake struck Jishishan County,Gansu Province,China,marking the most significant earthquake in the northeastern edge of the Tibetan Plateau since *** its proximate to the Loess Plateau,which is extremely susceptible to geohazards,this earthquake raises awareness about the seismic hazard of several mega-cities such as Xi'an in Northwest *** this paper,we inferred that the rupture occurred on an east-dipping backthrust,resulting from the regional E-W contraction tectonic *** dynamic model through teleseismic waves and static model through radar displacement measurements together reveal a unilateral,along-strike rupture,encountering a slip barrier at one side of the main slip patch causing a cluster of *** also identified a high-dip structure,which is an early-stage backthrust fault whose dip becomes increasingly high due to regional compressional *** from the loaded fault segments,particularly on the fault linkage,which necessitate continuous examination,a detailed seismic hazard assessment of the west Qinling and Daotanghe-Linxia fault system identifies a seismic gap between Weiyuan and Dingxi with the potential for a Mw7.5 ***,these findings provide valuable insights into the seismic behavior of the seismogenic fault as well as guidance on hazard mitigation in its surrounding fault systems.

关键词： 2023 Jishishan Earthquake dynamic rupture process coseismic displacements seismic hazard assessment fault slips mechanics

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AUGER STUDY OF CARBON LAYER ON ON IMPLANTED STEEL SURFACE

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Acta Metallurgica Sinica(English Letters) 1989年第11期2卷 354-356页

作者： yu zhenjiang YANG Dequan XIE Xie YAN Rongxin FAN Chuizhen, Lanzhou Institue of Physics, Ministry of Aeronautical Industry, Lanzhou, China

The carbon layers on implanted steel surface have been studied by means of Auger spectra. It is shown that the thickness of the carbon layer is proportional to the dose of implanted ions. By comparison with the results of friction and wear tests, the friction coefficient is smaller than 0.20 at the first part of the friction coefficient curve. It is considered that the graphitic carbon layer on the top of steel is helpful to reducing the surface friction coefficient of steel.

关键词： nitrogen ion implantation carbon layer on surface GCr15 wear resistance

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煤气化废水酚氨分离回收系统的流程改造和工业实施

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化工学报 2010年第7期61卷 1821-1828页

作者：钱宇周志远陈赟余振江华南理工大学化学与化工学院广东广州510640 中煤集团哈尔滨煤化工公司黑龙江哈尔滨154854

煤气化工艺中产生的洗气废水含有酚氨等高浓度难降解有机污染物。工业上采用化工分离和生化处理两段法来依次实现回收酚氨和净化排放。现有工艺中酚回收效率较低,难以保证进入生化工艺段的水质,影响最终排放。本文研究发现:萃取剂的选... 详细信息

煤气化工艺中产生的洗气废水含有酚氨等高浓度难降解有机污染物。工业上采用化工分离和生化处理两段法来依次实现回收酚氨和净化排放。现有工艺中酚回收效率较低,难以保证进入生化工艺段的水质,影响最终排放。本文研究发现:萃取剂的选择和分离序列对萃取过程的pH值及随之对脱酚效率的影响极大。本文将脱氨装置单元前置,提出了精馏汽提塔侧线脱氨技术,将废水的pH值从10.5降到6.5,使萃取在偏酸条件下进行。采用甲基异丁基甲酮(MIBK)替代原有的二异丙醚(DIPE)萃取剂,显著提高了对多元酚的分配系数,总酚萃取效率从76%提升到93%。以上新流程已在某大型煤化工企业3200t.d-1煤气化污水化工分离系统中得以成功改造实施。新流程的实施提高了有机污染物的脱除率,为后续的生化处理工艺的达标排放奠定了基础。

关键词：分离萃取煤气化废水甲基异丁基甲酮苯酚回收

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Isolation of a Halophilic Bacterium, Bacillus sp. Strain NY-6 for Organic Contaminants Removal in Saline Wastewater on Ship

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Journal of Marine Science and Application 2013年第2期12卷 245-249页

作者： Jie Gao zhenjiang yu Xiaohui Zhang Dan Zhao Fangbo Zhao Key Laboratory of Superlight Materials and Surface Technologies Ministry of Education Harbin Engineering University Harbin 150001 China Department of Pathology No. 4 Hospital of Harbin Medical University Harbin 150001 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin 150090 China

The objective of this research was to examine if certain strains of Bacillus bacteria, could survive in dry powder products and if so, could the bacteria degrade organic contaminants in saline wastewater on a ship. As part of the study, we isolated 7 domesticated strains named NY1, NY2,..., and NY7, the strain NY6 showed to have the best performance for organic matter degradation and could survive in dry powder more than 3 months. NY6 was identified as Bacillus aerius, based on the morphological and physic-chemical properties. Its optimal growth conditions were as follows： salinity was 2%; temperature was 37℃; pH was in 6.5-7.0; best ratio of C： N： P was 100：5：1. The capability of its dry powder for Chemical Oxygen Demand （COD） removal was 800mg COD/g in synthesized marine wastewater with 2% salinity. The spores in the dry powder were 1.972×108 g-1.

关键词： halophilic bacterium saline wastewater bacillus Chemical Oxygen Demand NY6

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安徽省第四纪岩石地层序列

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地质学报 2008年第2期82卷 254-261页

作者：于振江彭玉怀安徽省地质调查院合肥230001

依据《国际地层指南》(1979)和《中国地层指南及中国地层指南说明书》(2001,修订版),总结多年的研究成果,按照多重地层划分原则,厘定安徽省第四纪地层序列,并结合年代地层和气候地层研究,试与最新的国际地层表(2004)和中国区域年代地层... 详细信息

依据《国际地层指南》(1979)和《中国地层指南及中国地层指南说明书》(2001,修订版),总结多年的研究成果,按照多重地层划分原则,厘定安徽省第四纪地层序列,并结合年代地层和气候地层研究,试与最新的国际地层表(2004)和中国区域年代地层(地质年代)表(2002)对比。安徽省第四纪地层主要发育于淮北平原、江淮波状平原和沿江丘陵平原。平原与山麓、河谷与波状平原、河谷与垅状平原,分别平行地发育两套地层,其沉积环境不同,在剖面上相互交错;而且绝大部分岩石地层单位是穿时的。

关键词：岩石地层序列第四纪安徽

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