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Journal of materiomics 2024年第2期10卷 396-407页

作者： Jiajia sun Qiang song Liyuan han Xuemin Yin Hejun Li state Key Laboratory of solidification processing Shaanxi Key Laboratory of Fiber Reinforced Light Composite MaterialsNorthwestern Polytechnical UniversityXi'an710072China

For the inadequate interlaminar strength of 2d carbon/carbon(C/C)composite,in-situ grown carbon nanotubes(CnTs)reinforcing strategy was put forward to strengthen the interlaminar matrix at the nanoscale and inhibit the interlaminar *** morphology is an essential factor in influencing the enhancement ***,the influence of in-situ grown CnT morphology on the microstructure and mechanical properties of C/C composite was deeply *** radially-aligned straight CnTs could induce the formation of highly-ordered pyrolytic carbon(pyC),while pyC in randomly-distributed curved CnTs concentrated area exhibits an isotropic ***,radially-aligned straight CnTs show better improvement on the flexural and shear strength of C/C *** to the fine structural characterization and finite element simulation,the influence mechanism of CnT morphology was *** morphology can influence the stress distribution in the pyC protective layer,and compared with radially-aligned straight CnTs,randomly-distributed curved CnTs induce higher tensile stress in the pyC protective layer,which has a detrimental impact on the flexural and shear properties of C/C *** work provides novel insights into the effect of CnT morphology on the microstructure and mechanical properties of C/C composites,which gives a basis for the structural design and preparation of CnTs reinforced C/C composites.

关键词： CnT morphology C/C composite microstructure mechanical properties

An ultra-sensitive biosensor for circulating microRnA detection with Fe single-atom enhanced cathodic luminol-O_(2) electrochemiluminescence

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nano Research 2024年第9期17卷 7926-7934页

作者： Yudie sun Yunxiang han mingyue Wang mingfu Ye Konglin Wu Kui Zhang school of Chemistry and Chemical Engineering Anhui University of TechnologyMa'anshan 243032China Key Laboratory of Optic-electric sensing and Analytical Chemistry for Life science MOEQingdao University of Science and TechnologyQingdao 266042China Engineering Research Center of Biofilm Water purification and Utilization Technology of ministry of Education Anhui University of TechnologyMa'anshan 243032China

Circulating microRnAs(miRnAs)play a pivotal role in the occurrence and development of acute myocardial infarction(AmI),and precise detection of them holds significant clinical *** development of luminol-based luminophores in the field of electrochemiluminescence(ECL)for miRnA detection has been significant,while their effectiveness is hindered by the instability of co-reactant hydrogen peroxide(H_(2)O_(2)).In this work,an iron single-atom catalyst(Fe-pnC)was employed for catalyzing the luminol-O_(2) ECL system to achieve ultra-sensitive detection of myocardial *** miRnA triggers a hybridization chain reaction(HCR),resulting in the generation of a dnA product featuring multiple sticky ends that facilitate the attachment of Fe-pnC probes to the electrode *** Fe-pnC catalyst exhibits high promise and efficiency for the oxygen reduction reaction(ORR)in electrochemical energy conversion *** resulting ECL biosensor allowed ultrasensitive detection of myocardial miRnA with a low detection limit of 0.42 fm and a wide linear range from 1 fm to 1.0 ***,it demonstrates exceptional performance when evaluated using serum samples collected from patients with *** work expands the application of single-atom catalysis in ECL sensing and introduces novel perspectives for utilizing ECL in disease diagnosis.

关键词： circulating miRnAs single-atom catalyst luminol-O_(2) electrochemiluminescence hybridization chain reaction

Effects of main components on energy output characteristics of thermobaric explosive——A case study of typical formulations

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defence Technology（防务技术） 2024年第8期38卷 205-216页

作者： Yunfei Zhao Yaning Li Zhiwei han peng Bao Jingyan Wang Boliang Wang school of Chemistry&Chemical Engineering Nanjing University of Science and TechnologyNanjing210094China school of safety science&Engineering Nanjing University of Science and TechnologyNanjing210094China

As a kind of high-efficiency explosive with compound destructive capability, the energy output law of thermobaric explosives has been receiving great attention. In order to investigate the effects of main components on the explosive characteristics of thermobaric explosives, various high explosives and oxidants were selected to formulate five different types of thermobaric explosive. Then they were tested in both open space and closed space respectively. pressure measurement system, high-speed camera,infrared thermal imager and multispectral temperature measurement system were used for pressure,temperature and fireball recording. The effects of different components on the explosive characteristics of thermobaric explosive were analyzed. The results showed that in open space, the overpressure is dominated by the high explosives content in the formulation. The addition of the oxidants will decrease the explosion overpressure but will increase the duration and overall brightness of the fireball. While in closed space, the quasi-static pressure formed after the explosion is positively correlated with the temperature and gas production. In addition, it was found that the differences in shell constraints can also alter the afterburning reaction of thermobaric explosives, thus affecting their energy output characteristics. pVC shell constraint obviously increases the overpressure and makes the fireball burn more violently.

关键词： Thermobaric explosives Components Overpressure Fireball Afterburning reaction

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Amplitude analysis of the decays d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese physics C 2024年第8期48卷 6-33页

作者： m.Ablikim m.n.Achasov p.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren n.Berger m.Berlowski m.Bertani d.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao n.Cao s.A.Cetin J.F.Chang W.L.Chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.s.Chen m.L.Chen s.J.Chen s.L.Chen s.m.Chen T.Chen X.R.Chen X.T.Chen Y.B.Chen Y.Q.Chen Z.J.Chen Z.Y.Chen s.K.Choi X.Chu G.Cibinetto F.Cossio J.J.Cui H.L.dai J.p.dai A.dbeyssi R.E.de Boer d.dedovich C.Q.deng Z.Y.deng A.denig I.denysenko m.destefanis F.de mori B.Fang s.s.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.T.Feng K.Fischer m.Fritsch C.d.Fu J.L.Fu Y.W.Fu H.Gao Y.n.Gao Yang Gao s.Garbolino I.Garzia p.T.Ge Z.W.Ge C.Geng E.m.Gersabeck B.ding X.X.ding Y.ding Y.ding J.dong L.Y.dong m.Y.dong X.dong m.C.du s.X.du Z.H.duan p.Egorov Y.H.Fan J.Fang JA.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl s.Gramigna m.Greco m.H.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo m.J.Guo R.p.Guo Y.p.Guo A.Guskov J.Gutierrez K.L.han T.T.han X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold T.Holtmann p.C.Hong G.Y.Hou X.T.Hou Y.R.Hou Z.L.Hou B.Y.Hu H.m.Hu J.F.Hu T.Hu Y.Hu G.s.Huang K.X.Huang L.Q.Huang X.T.Huang Y.p.Huang T.Hussain F.H\"olzken n.H\"usken n.in der Wiesche m.Irshad J.Jackson s.Janchiv J.H.Jeong Q.Ji Q.p.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia d.Jiang H.B.Jiang p.C.Jiang s.s.Jiang T.J.Jiang X.s.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao s.Jin Y.Jin m.Q.Jing X.m.Jing T.Johansson s.Kabana n.Kalantar-nayestanaki X.L.Kang X.s.Kang m.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf m.Kuessner X.Kui A.Kupsc W.K\"uhn J.J.Lane p.Larin L.Lavezzi T.T.Lei Z.H.Lei H.Leithoff m.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng Li d.m.Li F.Li G.Li H.Li H.B.Li H.J.Li H.n.Li Hui Li J.R.Li J.s.Li K.Li L.J.Li L.K.Li Lei Li m.H.Li p.R.Li Q.m.Li Q.X.Li R.Li s.X.Li T.Li W.d.Li W.G.Li X.Li X.H.Li X.L.Li X.Y.Li Y Institute of High Energy physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of nuclear physics sB RAs(BInp) Novosibirsk 630090Russia Carnegie mellon University PittsburghPennsylvania 15213USA Central China normal University Wuhan 430079China Central south University Changsha 410083China China Center of Advanced science and Technology Beijing 100190China China University of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COmsATs University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GsI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou normal University Hangzhou 310036China Hebei University Baoding 071002China Helmholtz Institute mainz Staudinger Weg 18D-55099 MainzGermany Henan normal University Xinxiang 453007China Henan University Kaifeng 475004China Henan University of science and Technology Luoyang 471003China Henan University of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Technology madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA InFn Laboratori nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly InFn Laboratori nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly InFn Laboratori nazionali di Frascati University of PerugiaI-06100PerugiaItaly InFn sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly InFn sezione di Ferrara University of FerraraI-44122FerraraItaly Inner mongolia University Hohhot 010021China Institute of modern physics Lanzhou 730000China Institute of physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BEsIII detector,a joint amplitude analysis is performed on the decays d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays d^(0)→a_(1)(1260)π,d^(0)→π(1300)π,d^(0)→ρ(770)ρ(770),and d^(0)→2(ππ)_(s)are observed in both *** the obtained amplitude model,the Cp-even fractions of d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of d^(0)→4πwhen used to determine the CKm angleγ(ϕ_(3))via the B^(−)→dK^(−)decay.

关键词： BEsIII d^(0)meson decays amplitude analysis Cp-even fraction

numerical and experimental study on the falling film flow characteristics with the effect of co-current gas flow in hydrogen liquefaction process

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petroleum science 2024年第2期21卷 1369-1384页

作者： Chong-Zheng sun Yu-Xing Li Hui han Xiao-Yi Geng Xiao Lu College of Energy storage Technology Shandong University of Science and TechnologyQingdao 266590ShandongChina College of pipeline and Civil Engineering/shandong provincial Key Laboratory of Oil&Gas storage and Transportation safety China University of PetroleumQingdao 266580ShandongChina

Liquid hydrogen storage and transportation is an effective method for large-scale transportation and utilization of hydrogen energy. Revealing the flow mechanism of cryogenic working fluid is the key to optimize heat exchanger structure and hydrogen liquefaction process(LH2). The methods of cryogenic visualization experiment, theoretical analysis and numerical simulation are conducted to study the falling film flow characteristics with the effect of co-current gas flow in LH2spiral wound heat *** results show that the flow rate of mixed refrigerant has a great influence on liquid film spreading process, falling film flow pattern and heat transfer performance. The liquid film of LH2mixed refrigerant with column flow pattern can not uniformly and completely cover the tube wall surface. As liquid flow rate increases, the falling film flow pattern evolves into sheet-column flow and sheet flow, and liquid film completely covers the surface of tube wall. With the increase of shear effect of gas-phase mixed refrigerant in the same direction, the liquid film gradually becomes unstable, and the flow pattern eventually evolves into a mist flow.

关键词： Hydrogen liquefaction spiral wound heat exchanger Flow pattern transition Falling film flow

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A novel dandelion-based bionic proppant and its transportation mechanism in different types of fractures

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petroleum science 2024年第4期21卷 2583-2599页

作者： Jun Li ming-Yi Wu Xu han si-Yuan He Ze-Yu Lin state Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University sichuan particles Energy and Technology Co. Ltd Chongqing Industry polytechnic College petroleum systems Engineering Faculty of Engineering and Applied Science University of Regina

Low-permeability reservoirs are generally characterized by low porosity and low permeability. Obtaining high production using the traditional method is technologically challenging because it yields a low reservoir recovery factor. In recent years, hydraulic fracturing technology is widely applied for efficiently exploiting and developing low-permeability reservoirs using a low-viscosity fluid as a fracturing ***, the transportation of the proppant is inefficient in the low-viscosity fluid, and the proppant has a low piling-up height in fracture channels. These key challenges restrict the fluid(natural gas or oil) flow in fracture channels and their functional flow areas, reducing the profits of hydrocarbon *** study aimed to explore and develop a novel dandelion-bionic proppant by modifying the surface of the proppant and the fiber. Its structure was similar to that of dandelion seeds, and it had high transport and stacking efficiency in low-viscosity liquids compared with the traditional ***, the transportation efficiency of this newly developed proppant was investigated experimentally using six different types of fracture models(tortuous fracture model, rough fracture model,narrow fracture model, complex fracture model, large-scale single fracture model, and small-scale single fracture model). Experimental results indicated that, compared with the traditional proppant, the transportation efficiency and the packing area of the dandelion-based bionic proppant significantly improved in tap water or low-viscosity fluid. Compared with the traditional proppant, the dandelionbased bionic proppant had 0.1-4 times longer transportation length, 0.3-5 times higher piling-up height, and 2-10 times larger placement area. The newly developed proppant also had some other extraordinary features. The tortuosity of the fracture did not influence the transportation of the novel proppant. This proppant could easily enter the branch fracture and n

关键词： dandelion-based bionic proppant Low-viscosity fracturing fluid Unconventional reservoir Volumetric fracturing stimulation

Low-temperature graphitization of lignin via Co-assisted electrolysis in molten salt

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Green Energy & Environment 2024年第9期9卷 1449-1458页

作者： shijie Li Wei-Li song Xue han Qingqing Cui Yan-li Zhu shuqiang Jiao Institute of Advanced structure Technology Beijing Institute of Technology state Key Laboratory of Advanced metallurgy University of Science and Technology Beijing state Key Laboratory of Explosion science and Technology Beijing Institute of Technology

The ever-growing energy demand and environmental issues have stimulated the development of sustainable energy ***,an efficient and environmentally friendly electrochemical transformation technology was proposed to prepare highly graphitized carbon materials from an abundant natural resource-lignin （LG）.The preparation process mainly includes pyrolytic carbonization of raw LG material and electrochemical conversion of amorphous carbon ***,with the assistance of Co catalyst,the graphitization degree of the products was significantly improved,in which the mechanism was the removal of heteroatoms in LG and the rearrangement of carbon atoms into graphite ***,tunable microstructures （nanoflakes） under catalytic effects could also be observed by controlling the electrolytic *** with the products Cn1 （without catalyst） and Cn5 （with 10%catalyst）,the specific surface area are 158.957 and202.246 m2g-1,*** used as the electrode material for lithium-ion batteries,Cn5 delivered a competitive specific capacity of～350 m Ah g-1（0.5 C） compared with commercial *** strategy proposed in this work provides an effective way to extract value-added graphite materials from lignin and can be extended to the graphitization conversion of any other amorphous carbon precursor materials.

关键词： Lignin Graphitic carbon Electrochemical conversion Lithium-ion batteries

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Water modeling on fluid flow and mixing phenomena in a BOF steelmaking converter

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Journal of Iron and steel Research International 2024年第3期31卷 595-607页

作者： Xin-yu Cai Hao-jian duan ding-han Li Anjun Xu Li-feng Zhang school of metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing 100083China school of mechanical and materials Engineering North China University of TechnologyBeijing 100144China

A 1∶8 physical water model was constructed to investigate the fluid flow and mixing phenomena in the basic oxygen furnace(BOF)*** particle image velocimetry was employed to measure the velocity distribution of the bath and the high-speed camera was applied to capture the cavity shape in the combined blowing BOF *** mixing time for varied operating conditions was measured by the stimulus-response *** cavity depth increased with the decrease in the lance height and the increase in the top gas flow rate while the bottom blowing gas had little influence on the cavity *** minimum cavity depth was obtained under the condition of a 69.8 m^(3)/h top gas flow rate,a 287.5 mm lance height and a 0.93 m^(3)/h bottom blowing gas flow rate,which was 161.2 *** mixing time decreased as the lance height decreased and the top blowing gas flow rate *** mixing time was first decreased and then increased with the increase in the bottom gas flow *** the condition of 69.8 m^(3)/h gas flow rate of top blowing,the 287.5 mm lance height and the 0.93 m^(3)/h gas flow rate of bottom blowing,the mixing time in the converter was 48.65 *** empirical formula between the stirring power and the mixing time in the converter was calculated.

关键词： Water model Fluid flow particle image velocimetry mixing time BOF converter

Improving flangeability of multiphase steel by increasing microstructural homogeneity

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Journal of Iron and steel Research International 2024年第7期31卷 1736-1745页

作者： Xiao-yu Yang Yong-gang Yang Xing Fang han-long Zhang Zhen-li mi Beijing Advanced Innovation Center for materials Genome Engineering Institute of Engineering TechnologyUniversity of Science and Technology BeijingBeijing 100083China shanghai Baosteel Group Corp.Technology Center Shanghai 201900China

multiphase microstructure significantly increases the strength,usually at the expense of flangeability because of lacking microstructure *** further improve the strength-flangeability of multiphase steel,the microstructural homogeneity was advanced by adjusting the hard martensite/austenite(m/A)*** strength-flangeability was measured via uniaxial tensile tests and hole expansion *** microstructures were characterized using a scanning electron microscope equipped with an electron backscatter diffraction detector and a transmission electron *** tests were supplementally used to quantitatively reveal the microstructural homogeneity of the *** show that the adjusted multiphase steel achieves an excellent ultimate tensile strength(~800 mpa)and flangeability(~135%hole expansion ratio).A promising homogeneous multiphase microstructure was obtained by controlling undercooled austenite transformed at about 600℃.This microstructure consists of soft polygonal ferrite,blocky bainitic ferrite,and hard m/A *** volume fraction of m/A islands is around 5%,and the average size is less than l *** nanoindentation analysis indicated that the participation of m/A islands impressively influenced the microstructural *** strain partition and better mechanical compatibility were present in the adjusted multiphase steel since the plasticity initiation started late,which resulted in a positive ***,avoiding m/A islands distributed in the chain along the rolling direction on the matrix hindered the possibility of voids coalescing into cracks and stabilized the flanging performance.

关键词： multiphase steel Flangeability martensite/austenite island-microstructural homogeneity-microstructure Compact strip production process

distribution of oxide inclusions in H13 castings under super-gravity field with multi-stage rotation speeds

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Journal of Iron and steel Research International 2024年第1期31卷 121-133页

作者： shao-ying Li Xiao-jun Xi Xing-ming Zhao han-jie Guo Jing Guo school of metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China Beijing Key Laboratory of special melting and preparation of High-End metal materials Beijing100083China Beijing Beiye Functional materials Corporation Beijing100192China shandong Tianwu Forming Technology Co. Ltd.Liaocheng252024ShandongChina

The 42 kg industrial H13 castings were prepared by different super-gravity fields with multi-rotation speeds,and the distribution of oxide inclusions in the castings was *** addition,the inward movement Reynolds number and inward movement time of oxide inclusions as well as the solidification time of molten steel at different positions in the castings were calculated to clarify the removal mechanism of oxide inclusions in super-gravity *** results show that the large size(i.e.,greater than 10μm)oxide inclusions are mainly concentrated in the inner and outer parts of the super-gravity castings with constant rotation speed(500 r min^(-1))and five-stage rotation speeds(500,600,750,850,and 950 r min^(-1)),respectively,while there are no large oxide inclusions in the super-gravity castings with three-stage rotation speeds(500,600,and 750 r min^(-1)).Although an increase in the particle size of inclusion and the rotation speed in super-gravity field is conducive to the increase in the inward movement Reynolds number of oxide inclusions and reduction in the inward movement time of oxide inclusions,it will reduce the local solidification time of molten *** the range of the rotation speed studied,the super-gravity field with three-stage rotation speeds has the best effect on the removal of inclusions in H13 molten steel.

关键词： distribution Oxide inclusion H13 casting super-gravity field Rotation speed