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稀土尾矿/钢渣催化CO燃烧性能的研究

稀土 2024年第4期45卷 64-70页

作者：陈義元张钊戚瑞龚志军武文斐内蒙古科技大学能源与环境学院内蒙古包头014010 内蒙古自治区高效洁净燃烧重点实验室内蒙古包头014010 白云鄂博共伴生矿资源高效综合利用省部共建协同创新中心内蒙古包头014010

采用固定床与红外烟气分析仪对白云鄂博稀土尾矿和钢渣在不同温度段(600℃~1000℃)催化CO燃烧的性能进行了研究。研究结果表明:在稀土尾矿和钢渣作用下CO的转换率都得到提高,说明稀土尾矿和钢渣的添加强化了CO催化燃烧作用,从而提高了C... 详细信息

采用固定床与红外烟气分析仪对白云鄂博稀土尾矿和钢渣在不同温度段(600℃~1000℃)催化CO燃烧的性能进行了研究。研究结果表明:在稀土尾矿和钢渣作用下CO的转换率都得到提高,说明稀土尾矿和钢渣的添加强化了CO催化燃烧作用,从而提高了CO的燃烧效率,并且其催化性能也随温度升高而升高。与钢渣相比,稀土尾矿在600℃~900℃温度范围内表现出较好的催化性能,说明稀土元素Ce与Fe_(2)O_(3)间具有良好的协同作用;钢渣则在900℃~1000℃表现出比稀土尾矿更好的催化性能,在1000℃时能实现91.3%的CO转换率。

关键词： CO催化燃烧转换率稀土尾矿钢渣催化活性

基岩断层面黏滑和蠕滑时岩石表层光释光信号模拟

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地震地质 2024年第2期46卷 357-370页

作者：罗明陈杰覃金堂尹金辉杨会丽刘进峰龚志军东华理工大学江西省数字国土重点实验室南昌330013 东华理工大学地球科学学院南昌330013 中国地震局地质研究所地震动力学国家重点实验室北京100029 新疆帕米尔陆内俯冲国家野外科学观测研究站北京100029

重建断层的黏滑(seismic slip)和蠕滑(creep)历史对于更好地了解断层活动和地震危险性评估至关重要。近年来,利用大地测量技术研究活动断层的蠕滑和黏滑过程成为一个研究热点。然而,在地质历史时期(如百年尺度以上),如何判断活动断层的... 详细信息

重建断层的黏滑(seismic slip)和蠕滑(creep)历史对于更好地了解断层活动和地震危险性评估至关重要。近年来,利用大地测量技术研究活动断层的蠕滑和黏滑过程成为一个研究热点。然而,在地质历史时期(如百年尺度以上),如何判断活动断层的滑动方式(黏滑或蠕滑),并获取其滑动速率仍然是一项挑战。文中基于近十年来发展的岩石表层光释光测年方法,结合内蒙古狼山断裂花岗岩样品的光释光晒退参数进行理论模拟,得到了基岩正断层发生黏滑、蠕滑和崩积楔侵蚀等情形的光释光晒退模型。模拟结果表明,该方法能够有效区分断层的黏滑和蠕滑,获得相应的活动期次和位移量,并且有潜力记录崩积楔侵蚀。文中还分析了该方法区分断层活动方式、期次的时间分辨率和获得位移量的空间分辨率。

关键词：基岩断层面黏滑蠕滑岩石表层光释光测年

Reinforcement of High Impact Polystyrene by Aramid Nanoparticle Fillers Prepared via an In situ Bottom-up Approach

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Chinese Journal of Polymer Science 2024年第8期42卷 1167-1176页

作者： Xiang-jun gong zhi-Ping Zhao Chang-Mei Sun Ying Zhang Rong-jun Qu Ying Wang School of Chemistry and Materials Science Ludong UniversityYantai 264025China

In this work,aramid nanoparticles(ANPs)were prepared in dimethyl formamide(DMF)solution containing high impact polystyrene(HIPS)via a bottom-up *** electron microscopy(TEM)images showed that the obtained ANPs were evenly distributed in the HIPS matrix without any *** composition of the ANPs,i.e.,poly(p-phenyl-p-phenylenediamine)(PPTA),was confirmed by Fourier transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS)and X-ray diffractometer(XRD).The ANP/HIPS composites,obtained after ethanol precipitation,were added to neat HIPS as fillers to fabricate ANP/HIPS composite *** surface roughness and the glass transition temperature(T_g)of the sheets were characterized by atomic force microscope(AFM)and differential scanning calorimetry(DSC),*** with neat HIPS,the mechanical properties of the composite sheet were significantly improved,and the Young's modulus increased from 246.55 MPa to 2025.12 MPa,the tensile strength increased from 3.07 MPa to 29.76 MPa,and the toughness increased from 0.32 N/mm^2 to 3.92 N/mm^2,with an increase rate of 721%,869%and 1125%,***,the thermal stability of the composites improved with the increase in ANP content.

关键词： High impact polystyrene PPTA nanoparticle Reinforce Mechanical property

Green synthesis of luminescent La-MOF nanoparticle from waste poly(ethylene terephthalate) for high-performance in Fe(Ⅲ) detection

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Rare Metals 2024年第8期43卷 3833-3843页

作者： zhi gong zhi-Kui Dai zhi-Yue Dong Qiu-Xuan Liu Valentin A.Milichko Hua-Jian Liu Jie Liu Ran Niu Jiang gong Key Laboratory of Material Chemistry for Energy Conversion and Storage Hubei Key Laboratory of Material Chemistry and Service FailureHubei Engineering Research Center for Biomaterials and Medical Protective MaterialsSemiconductor Chemistry CenterSchool of Chemistry and Chemical EngineeringMinistry of EducationHuazhong University of Science and TechnologyWuhan 430074China School of Chemical Engineering and Pharmacy Wuhan Institute of TechnologyWuhan 430073China Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical EngineeringHubei UniversityWuhan 430062China School of Physics and Engineering ITMO UniversitySt.Petersburg197101Russia School of Materials Science and Engineering Hubei UniversityWuhan430062China Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing School of Mechanical and Automotive EngineeringKey Laboratory of Polymer Processing EngineeringMinistry of EducationSouth China University of TechnologyGuangzhou 510641China

Developing luminescent metal-organic frameworks(MOFs) capable of high-efficiency Fe^(3+)sensing has aroused great attraction in the fields of biology,chemistry,***,previous solvothermal methods are limited by organic solvent usage,time consuming,high pressure,and high-energy ***,we propose the waste-toMOF strategy towards the scale-up production of La-MOF nanoparticles through the ball milling of recycled poly(-ethylene terephthalate)(PET) bottles and La(NO_(3))_(3)·_(6)H_(2)*** goes on alkaline hydrolysis to form 1,4-benzenedicarboxylic acid sodium salt(Na_(2)BDC) and ethylene glycol by ball ***,BDC reacts with La^(3+)to form *** as-prepared La-MOF crystal nanoparticles possess a rod-like morphology with the size of few hundred ***,La-MOF nanoparticles display high selectivity and sensitivity for Fe^(3+)*** quenching constant and limit of detection are 5.29×10^(3)(mol·L^(-1))^(-1) and 0.147 μmol·L^(-1),respectively,thus surpassing many advanced Fe^(3+) *** to the result of density functional theory,the high Fe^(3+) detection performance of La-MOF is related to the complexing of Fe^(3+)with La-MOF,which leads to the gradual dissociation of the coordination bond between terephthalic acid and La^(3+).It is anticipated that the mechanochemistry milling-based wasteto-MOF strategy provides a new platform for the massive production of functional MOFs in a green manner.

关键词： Metal-organic framework Waste polyester Mechanochemistry milling Fluorescence sensor

HSP110 aggravates ischemia-reperfusion injury after liver transplantation by promoting NF-κB pathway

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Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 344-352页

作者： Qing-zhi Hu Zhen-Rui Cao Wei-Xiong Zheng Min-Jie Zhao jun-Hua gong Cong Chen Zhong-jun Wu Rui Tao Department of Hepatobiliary Surgery Bishan Hospital of Chongqing Medical UniversityChongqing 402760China Department of Cardiothoracic Surgery the First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China c Department of Hepatobiliary Surgery the First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Hepatobiliary Surgery the Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China

Background:Ischemia-reperfusion injury(IRI)poses a significant challenge to liver transplantation(LT).The underlying mechanism primarily involves overactivation of the immune *** shock protein 110(HSP110)functions as a molecular chaperone that helps stabilize protein ***:An IRI model was established by performing LT on Sprague-Dawley rats,and HSP110 was silenced using ***-eosin staining,TUNEL,immunohistochemistry,ELISA and liver enzyme analysis were performed to assess IRI following *** blotting and quantitative reverse transcription-polymerase chain reaction were conducted to investigate the pertinent molecular ***:Our findings revealed a significant increase in the expression of HSP110 at both the mRNA and protein levels in the rat liver following LT(P<0.05).However,when rats were injected with siRNAHSP110,IRI subsequent to LT was notably reduced(P<0.05).Additionally,the levels of liver enzymes and inflammatory chemokines in rat serum were significantly reduced(P<0.05).Silencing HSP110 with siRNA resulted in a marked decrease in M1-type polarization of Kupffer cells in the liver and downregulated the NF-κB pathway in the liver(P<0.05).Conclusions:HSP110 in the liver promotes IRI after LT in rats by activating the NF-κB pathway and inducing M1-type polarization of Kupffer *** HSP110 to prevent IRI after LT may represent a promising new approach for the treatment of LT-associated IRI.

关键词： Ischemia-reperfusion injury Liver transplantation Inflammation HSP110 Heat shock proteins NF-κB

乌兰巴托以西断裂活动时代的光释光年代学研究

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地震地质 2013年第2期35卷 322-327页

作者：孙高元龚志军中国科学院地质与地球物理研究所北京100029 中国科学院大学北京100864

蒙古乌兰巴托周边发育了多条活动断裂。以乌兰巴托以西的Emeelt和Hustai断裂为例,对相关断层开挖探槽,进行年代学研究。结果表明,Emeelt断裂以走滑运动为主,根据剖面错断地层和其上覆、下伏地层的光释光年代学研究结果,推断出该断层最... 详细信息

蒙古乌兰巴托周边发育了多条活动断裂。以乌兰巴托以西的Emeelt和Hustai断裂为例,对相关断层开挖探槽,进行年代学研究。结果表明,Emeelt断裂以走滑运动为主,根据剖面错断地层和其上覆、下伏地层的光释光年代学研究结果,推断出该断层最新活动时间介于距今(9.6±1.0)ka和(11.3±1.3)ka之间;对Hustai断裂开挖的新鲜剖面显示其为正断层,通过分析错断地层和其上覆堆积物的光释光定年结果,推断该断裂最新活动时间介于距今(0.87±0.08)ka和(24.2±4.9)ka之间,且可能更接近距今(0.87±0.08)ka。

关键词：活动断层光释光测年晚第四纪乌兰巴托

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我国涉外非婚同居财产关系准据法选择论要

湖南师范大学社会科学学报 2014年第4期43卷 89-95页

作者：龚志军湖南商学院

经济的全球发展、社会保障的增强、全球沟通与交往的顺畅以及道德观念和文化的趋同,非婚同居跨越了国界,出现了涉外非婚同居的新型财产关系。面对各国关于非婚同居财产关系的不同规定,我国国际私法必须正视这一新型法律冲突。我国立法... 详细信息

经济的全球发展、社会保障的增强、全球沟通与交往的顺畅以及道德观念和文化的趋同,非婚同居跨越了国界,出现了涉外非婚同居的新型财产关系。面对各国关于非婚同居财产关系的不同规定,我国国际私法必须正视这一新型法律冲突。我国立法应该结合该类财产关系的自身特殊性,按照"管辖权处理方式"和"冲突法处理方式"两种准据法确定方式,构建我国开放灵活的涉外非婚同居财产关系准据法选择体系,这对相关当事人合法权益的维护乃至整个国际私法理论与立法的完善都具有重要价值。

关键词：涉外非婚同居财产关系准据法

DEM investigation of strength and critical state behaviours of granular materials under true triaxial loadings

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Particuology 2024年第2期85卷 198-212页

作者： Minyi Zhu Guobin gong jun Xia Stephen Wilkinson Department of Civil Engineering Xi'an Jiaotong-Liverpool UniversityChina Department of Civil Engineering and Industrial Design University of LiverpoolLiverpoolUK Faculty of Engineering and Information Sciences University of Wollongong in DubaiUnited Arab Emirates

This paper investigates the strength and critical state(CS)behaviours of granular materials via DEM simulations of true triaxial drained tests under three different loading modes including constant b(in-termediate stress ratio)tests with constantσ'1(major principal stress),constant p(mean pressure)and constantσ'3(minor principal stress)*** this end,a series of samples are generated with the same particle size distribution,and with the confining stresses ranging from 100 kPa to 900 *** CS is achieved for all *** the macroscopic behaviours and the microscopic behaviours are examined and compared considering different loading modes,confining stresses and intermediate stress ratios(b).The critical state lines(CSLs)are found to be unique and independent of the loading modes,but dependent on the b *** CSLs with b=0 and b=1 form the two boundaries of CSLs respectively beyond which CSLs under all other b tests cannot go *** different strength criteria are examined and compared in terms of both peak and CS *** Mohr-Coulomb strength criterion is found to be only suitable for axisymmetric loading *** Lade-Duncan criterion is only suitable for describing peak strengths,which is dependent on the loading modes and confining *** Satake criterion and Matsuoka-Nakai criterion are the more appropriate strength criteria for describing CS failures,indicating that the CS values of both the Satake parameter and the Matsuoka-Nakai parameter describe an inherent property that characterizes the CS failure for a given type of *** CS mechanical coordination number is fitted by a curved line for a given b value,which is unique regardless of the loading *** peak and CS values of both major and minor principal fabric tensors decrease with increasing b values,while they increase with increasing b values for the intermediate principal fabric tensor.

关键词： Discrete element method Intermediate stress ratio Dilation Critical state Failure criterion

Effect of Mo and cold forging deformation on strength and ductility of cobalt-based alloy L605

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Journal of Iron and Steel Research International 2024年第7期31卷 1811-1823页

作者： Zhong-lin Wang zhi-hua gong Quan Li Han-sheng Bao School of Materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou 014017Inner MongoliaChina Institute of Special Steels Central Iron and Steel Research Institute Co.Ltd.Beijing 100081China

Mo element was added to cobalt-based alloy L605,and cold forging deformation was *** effects of the addition and cold forging deformation on the microstructure and mechanical properties of the alloy were studied by thermodynamic calculation,electron backscatter diffraction,transmission electron microscopy,and X-ray *** stacking fault energy(SFE)of the alloy decreased after the addition,and the formation of stacking faults and intersections were promoted to improve the strength and *** tensile strength of the alloy with Mo increased from 1190 to 1702 MPa after 24%cold deformation,producing significant work *** strengthening mechanism is strain-induced martensitic transformation(SIMT)and deformation *** alloy,combined with Mo and after 24%deformation,had both high strength and ductility in comparison with the original cobalt-based alloy *** is attributed to the lower SFE which caused the increase in stacking fault *** the tensile process,theε-hcp phase was easily generated at the stacking fault to reduce the stress concentration and increase the *** SIMT by adjusting the density of stacking faults can improve the mechanical properties of cobalt-based ***ε-hcp phase,the interaction between deformation twins and dislocations,and the interaction between e-hcp phases during cold forging deformation caused local stress concentration,lowering ductility and toughness.

关键词： Cobalt-based alloy-Stacking fault energy Strain-induced martensitic transformation Deformation twin Cold forging deformation