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Chinese Journal of Polymer Science 2024年第10期42卷 1595-1601,I0015页

作者： Meng wei wei-hao feng Chen Yu Zhen-Yi Jiang Guang-Qiang Yin wei Lu Tao Chen Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201China School of Chemical Sciences University of Chinese Academy of SciencesBeijing100049China School of Materials Science and Chemical Engineering Ningbo UniversityNingbo315211China

Achieving versatile room temperature phosphorescence(RTP)materials,especially with tunable mechanical properties and shape memory is attractive and essential but rarely ***,a strategy was reported to realize multi-functional RTP films with multicolor fluorescence,ultralong afterglow,adjustable mechanical properties,and shape memory through the synergistic dynamic interaction of lanthanide(Ln~Ⅲ)-terpyridine coordination,borate ester bonds,and hydrogen bondings in a poly(vinyl alcohol)(PVA)*** varying the amount of borax,the mechanical properties of the films could be finely controlled due to the change of crosslinking degree of dynamic borate ester bonds in *** assembly and disassembly of borate ester bonds upon the trigger of borax and acid were applied as reversible linkage to achieve programmable shape memory *** addition,the films displayed both fascinating multicolor fluorescence and ultralong afterglow characteristics due to the presence of Ln III doping and confinement of terpyridine in *** study provides a new avenue to impart modulable mechanical strength and shape memory to RTP materials.

关键词： Room temperature phosphorescence materials Dynamic bonds Multicolor fluorescent Tunable mechanical properties Shape memory

Preparation of ultrafine Ti (C, N)-based cermet using oxygen-rich powders

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Journal of Central South University of Technology 2005年第z1期12卷 39-43页

作者： feng Ping HE Yue-hui XIONG wei-hao XIAO Yi-feng State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China State Key Laboratory of Die & Mould Technology Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China State Key Laboratory of Die & Mould Technology Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China

The availability using oxygen-rich powders to prepare ultrafine Ti(C,N)-based cermets was investigated. The deoxidation process, denitrification phenomenon and the effect of deoxidation on microstructure and mechanical properties of sintered samples were discussed, respectively. The results show that oxygen in the samples prepared even with high oxygen contained in starting powders can be almost completely cleaned away through suitable sintering process. The ultrafine oxygen-rich powders have a significant effect on microstructure, which promotes the formation of white core phase. A ultrafine Ti(C,N)-based cermet with mean particle size of 0. 30 μm, uniform microstructure and excellent mechanical properties is successfully prepared. It is also found that there exists severe denitrification phenomenon in the preparation process of ultrafine Ti(C,N)-based cermet.

关键词： Ti(C,N)-based cermet ultrafine structured grain solid-state sintering deoxidation microstructure mechanical property

Inversion of Venus internal structure based on geodetic data

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Research in Astronomy and Astrophysics 2020年第8期20卷 237-251页

作者： Chi Xiao Fei Li Jian-Guo Yan wei-feng hao Yuji Harada Mao Ye Jean-Pierre Barriot Chinese Antarctic Center of Surveying and Mapping Wuhan UniversityWuhan 430079China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China Space Science Institute Macao University of Science and TechnologyAvenida WailongTaipaMacaoChina Observatory Geodetic de Tahiti BP 657098702 Faa'aTahitiFrench Polynesia

Understanding the internal structure of Venus promotes the exploration of the evolutionary history of this ***,the existing research concerning the internal structure of Venus has not used any inversion *** this work we employed an inversion method to determine the internal structure of Venus using observational or hypothetical geodetic data;these data include mass,mean radius,mean moment of inertia and second degree tidal Love number *** determine the core state of Venus,we created two models of Venus,an isotropic 3-layer model with entire liquid core and an isotropic 4-layer model with liquid outer core and a solid inner core,assuming that the interior of Venus is spherically symmetric and in hydrostatic equilibrium.A series of the sensitivity analysis of interior structure parameters to the geodetic data considered in here shows that not all of the parameters can be constrained by the geodetic data from *** this basis,a Markov Chain Monte Carlo algorithm was used to determine the posterior probability distribution and the optimal values of the internal structure parameters of Venus with the geodetic *** found that the 3-layer model is more credible than the 4-layer model via currently geodetic *** the assumption of the 3-layer model with the k2=0.295±0.066,I/MR^2=0.33±0.0165,andρ=5242.7±2.6 kg m^-3,the liquid iron-rich core of Venus has a radius of 3294+215-261km,which suggests a larger core than previous research has *** average density of the mantle and liquid core of Venus are 4101+325-375and 11885+955-1242kg m~^-3,respectively.

关键词： planets and satellites:interiors planets and satellites:terrestrial planets planets and satellites:physical evolution planets and satellites:fundamental parameters

Reducing loss of significance in the computation of Earth-based two-way Doppler observables for small body missions

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Research in Astronomy and Astrophysics 2021年第8期21卷 75-90页

作者： wei-Tong Jin Fei Li Jian-Guo Yan Xuan Yang Mao Ye wei-feng hao Thomas Paul Andert Jean-Pierre Barriot State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China State Key Laboratory of Satellite Navigation System and Equipment Technology Shijiazhuang 050200China Chinese Antarctic Center of Surveying and Mapping Wuhan UniversityWuhan 430079China Universitat der Bundeswehr München NeubibergBayern85579Germany University of French Polynesia BP 6570F-98702 Faa'aTahitiFrench Polynesia

Two-way Doppler measurement is a typical Earth-based radiometric technique for interplanetary spacecraft navigation and gravity science *** most widely used model for the computation of two-way Doppler observables is Moyer’s differenced-range Doppler(DRD) formula,which is based on a Schwarzschild approximation of the Solar-System ***,the computation of range difference in DRD formula is sensitive to round-off errors due to approximate numbers defined by the norm IEEE754 in all *** paper presented two updated models and their corresponding detailed instructions for the computation of the two-way Doppler observables so as to impair the effects of this type of numerical *** two models were validated by two case studies related to the Rosetta mission—asteroid Lutetia flyby and comet 67 P/Churyumov-Gerasimenko orbiting *** these two cases,the numerical noise from the updated models can be reduced by two orders-of-magnitude in the computed two-way Doppler *** results showed an accuracy from better than 6 × 10^(-3) mm s^(-1) at 1 s counting time interval to better than 3 × 10^(-5) mm s^(-1) at 60 s counting time interval.

关键词： methods:numerical space vehicles planets and satellites:general

证券处罚行刑衔接过程中行政行为之可诉性审查

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云南师范大学学报（哲学社会科学版） 2018年第3期50卷 139-147页

作者：魏浩锋中国政法大学法学院北京100088

证券处罚行刑衔接过程中的各阶段,监管机关依据有关规定会做出相应的行政行为,此类行政行为因涉及与刑事司法机关的衔接,其可诉性问题十分复杂。从行政诉讼的角度分析证券处罚行刑衔接过程中有关行政行为的可诉性,具有重要的实践意义。... 详细信息

证券处罚行刑衔接过程中的各阶段,监管机关依据有关规定会做出相应的行政行为,此类行政行为因涉及与刑事司法机关的衔接,其可诉性问题十分复杂。从行政诉讼的角度分析证券处罚行刑衔接过程中有关行政行为的可诉性,具有重要的实践意义。监管机关的移送行为、行政强制措施、行政认定及同种罚在案件的不同阶段,其可诉性亦不相同。

关键词：证券处罚行刑衔接可诉性移送行为行政强制措施行政认定

A model study on carbon cycle and phytoplankton dynamical processes in the Bohai Sea

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Acta Oceanologica Sinica 2003年第1期22卷 47-56页

作者： weihao ZhaoLiang fengShizuo InstituteofPhysicalOceanography OceanUniversityofChina(OceanUniversityofQingdao)Qingdao266003China PhysicalOceanographyKeyLabofStateEducationMinistry OceanUniversityofChina(OceanUnivrsityofQingdao)Qingdao266003China

The carbon cycle of lower trophic level in the Bohai Sea is studied with a three-dimensional biological and physical coupled model. The influences of the processes (including horizontal advection, river nutrient load, active transport etc. ) on the phytoplankton biomass and its evolution are estimated. The Bohai Sea is a weak sink of the CO2 in the atmosphere. During the cycle, 13.7% of the gross production of the phytoplankton enter the higher trophic level and 76.8 % of it are consumed by the respiration itself. The nutrient reproduction comes mainly from the internal biogeochemical loop and the rem-ineralization is an important mechanism of the nutrient transfer from organic form to inorganic. Horizontal advection decreases the total biomass and the eutrophication in some sea areas. Change in the nutrient load of a river can only adjust the local system near its estuary. Controlling the input of the nutrient, which limits the alga growth, can be very useful in lessening the phytoplankton biomass.

关键词： Carbon cycle phytoplankton dynamics the Bohai Sea

Role of iron ore in enhancing gasification of iron coke:Structural evolution,influence mechanism and kinetic analysis

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 58-69页

作者： Jie Wang wei Wang Xuheng Chen Junfang Bao Qiuyue hao Heng Zheng Runsheng Xu School of Chemistry and Materials Science Hubei Engineering UniversityXiaogan 432000China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Institue of Ironmaking Technology Baosteel Central Research InstituteShanghai 201999China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The utilization of iron coke provides a green pathway for low-carbon *** uncover the influence mechanism of iron ore on the behavior and kinetics of iron coke gasification,the effect of iron ore on the microstructure of iron coke was ***,a comparative study of the gasification reactions between iron coke and coke was conducted through non-isothermal thermogravimetric *** findings indicate that compared to coke,iron coke exhibits an augmentation in micropores and specific surface area,and the micropores further extend and *** provides more adsorption sites for CO_(2) molecules during the gasification process,resulting in a reduction in the initial gasification temperature of iron *** the heating rate in non-isothermal gasification can enhance the reactivity of iron *** metallic iron reduced from iron ore is embedded in the carbon matrix,reducing the orderliness of the carbon structure,which is primarily responsible for the heightened reactivity of the carbon *** kinetic study indicates that the random pore model can effectively represent the gasification process of iron coke due to its rich pore ***,as the proportion of iron ore increases,the activation energy for the carbon gasification gradually decreases,from 246.2 kJ/mol for coke to 192.5 kJ/mol for iron coke 15wt%.

关键词： low-carbon ironmaking iron coke gasification structural evolution kinetic model

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基于远震接收函数的南极大陆冰盖厚度研究

地球物理学报 2017年第10期60卷 3780-3792页

作者：晏鹏李志伟李斐杨元德郝卫峰周磊武汉大学中国南极测绘研究中心武汉430079 中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室武汉430077 武汉大学测绘遥感信息工程国家重点实验室武汉430079

冰盖厚度是研究南极冰盖质量、建立冰盖动力学模型的基本参数,对于冰川均衡调整、冰盖物质平衡及全球气候变化研究具有重要意义.基于地震学的远震接收函数和H-Kappa格网搜索方法可以用于地震台站下方冰盖厚度的可靠探测,不仅能与冰雷达... 详细信息

冰盖厚度是研究南极冰盖质量、建立冰盖动力学模型的基本参数,对于冰川均衡调整、冰盖物质平衡及全球气候变化研究具有重要意义.基于地震学的远震接收函数和H-Kappa格网搜索方法可以用于地震台站下方冰盖厚度的可靠探测,不仅能与冰雷达获得的冰盖厚度进行独立对比,还可以与冰雷达方法相互补充,进一步填补南极大陆冰盖厚度探测空白区.本文利用布设于南极大陆冰盖上方的流动地震台阵记录到的远震波形数据,基于接收函数方法对台阵下方的冰盖厚度进行了研究.结果显示:基于远震接收函数方法的冰盖厚度与Bedmap2冰厚格网模型相比,二者差别大多在200 m以内;少数台站差值达到600 m左右,这一差别可能与Bedmap2测线分布空区、冰雷达测深不确定性以及冰盖内部复杂波速结构等因素有关.本文研究结果表明:利用南极大陆冰盖上方的流动地震台阵,基于远震接收函数方法可以获得比较可靠的南极冰盖厚度,为独立验证冰雷达的探测结果并弥补冰雷达探测空白区提供了有效方法.同时,部分台站接收函数波形的复杂性可能暗示了南极大陆数千米厚的冰盖内部结构不是均一的,仍然存在比较复杂的内部结构变化.因此,有必要进一步利用包括接收函数波形拟合、地震面波反演等方法对南极大陆冰盖厚度及其内部精细结构进行更为深入的研究.

关键词：南极冰盖厚度远震接收函数 H—Kappa格网搜索

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顾及时变的参考框架转换研究

测绘科学 2012年第4期37卷 19-21页

作者：刘常娟郝卫峰湖南省水利水电勘测设计研究总院长沙410007 武汉大学测绘遥感信息工程国家重点实验室武汉430079

在传统的大地坐标参考框架转换中,参考点都被固定在同一个历元。由于各种地球动力学现象的存在,以大地测量为目的的静态参考系统已不存在,同时随着高精度参考框架的连续观测和测定,参考框架的转化必须顾及时变性。本文讨论了时变参考框... 详细信息

在传统的大地坐标参考框架转换中,参考点都被固定在同一个历元。由于各种地球动力学现象的存在,以大地测量为目的的静态参考系统已不存在,同时随着高精度参考框架的连续观测和测定,参考框架的转化必须顾及时变性。本文讨论了时变参考框架转换中2个互逆的过程,采纳了相似转换中参考点之间的内在约束来克服转换中人为的公式简化和秩亏问题。通过数值计算分析,该方法成功实现了坐标框架之间的转换,并保持了尺度、旋转和平移参数及其变化率精度的独立性。

关键词：时变参考框架相似转换

Prospects of elafibranor in treating alcohol-associated liver diseases

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World Journal of Gastroenterology 2025年第2期31卷 132-137页

作者： wei-Tong Cui Hua-Ru Xue Dian-Fang wei Xiao-Yu feng Kai Wang School of Basic Medicine Qilu Medical UniversityZibo 255300Shandong ProvinceChina School of Medical Imaging Qilu Medical UniversityZibo 255300Shandong ProvinceChina

Alcohol-related liver disease(ALD),which is induced by excessive alcohol con-sumption,is a leading cause of liver-related morbidity and *** pa-tients exhibit a spectrum of liver injuries,including hepatic steatosis,inflam-mation,and fibrosis,similar to symptoms of nonalcohol-associated liver diseases such as primary biliary cholangitis,metabolic dysfunction-associated steatotic liver disease,and nonalcoholic *** has been approved for the treatment of primary biliary cholangitis and has been shown to improve symptoms in both animal models and in vitro cell models of metabolic dysfunc-tion-associated steatotic liver disease and nonalcoholic ***,the efficacy of elafibranor in treating ALD remains *** this article,we comment on the recent publication by Koizumi et al that evaluated the effects of elafibranor on liver fibrosis and gut barrier function in an ALD mouse *** findings indicate the potential of elafibranor for ALD treatment,but further experimental investigations and clinical trials are warranted.

关键词： Elafibranor Alcohol-associated liver diseases Peroxisome proliferator-activated receptor Lipid Apoptosis Steatosis Inflammation Fibrosis