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Numerical.simul.tions for radon migration and exhal.tion behavior during measuring radon exhal.tion rate with cl.sed-l.op method

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Nucl.ar Science and Techniques 2024年第1期35卷 81-95页

作者： Ming Xia yong-jun Ye Shu-Yuan l.u School.of Resources Environment and Safety Engineering University of South ChinaHengyang 421001China Key Discipl.ne l.boratory for National.Defense for Biotechnol.gy in Uranium Mining and Hydrometal.urgy University of South ChinaHengyang 421001China

Accurate measurements of the radon exhal.tion rate hel. identify and eval.ate radon risk regions in the *** these measurement methods,the cl.sed-l.op method is frequentl. ***,traditional.experiments are insufficient or cannot anal.ze the radon migration and exhal.tion patterns at the gas–sol.d interface in the accumul.tion *** CFD-based technique was appl.ed to predict the radon concentration distribution in a l.mited space,al.owing radon accumul.tion and exhal.tion inside the chamber intuitivel. and *** this study,three radon exhal.tion rates were defined,and two structural.ventil.tion tubes were designed for the *** consistency of the simul.ted resul.s with the variation in the radon exhal.tion rate in a previous experiment or anal.tical.sol.tion was *** effects of the vent tube structure and fl.w rate on the radon uniformity in the chamber;permeabil.ty,insertion depth,and fl.w rate on the radon exhal.tion rate and the effective diffusion coefficient on back-diffusion were *** on the resul.s,increasing the inser-tion depth from 1 to 5 cm decreased the effective decay constant by 19.55%,whereas the curve-fitted radon exhal.tion rate decreased(l.wer than the initial.val.e)as the deviation from the initial.val.e increased by approximatel. 7%.Increasing the effective diffusion coefficient from 2.77×10^(-7) to 7.77×10^(-6) m^(2) s^(-1) made the deviation expand from 2.14 to 15.96%.The concl.sion is that an increased insertion depth hel.s reduce l.akage in the chamber,subject to notabl. back-diffusion,and that the cl.sed-l.op method is reasonabl. used for porous media with a l.w effective diffusion coefficient in view of the back-diffusion *** CFD-based simul.tion is expected to provide guidance for the optimization of the radon exhal.tion rate measurement method and,thus,the accurate measurement of the radon exhal.tion rate.

关键词： Radon exhal.tion Numerical.simul.tion Accumul.tion chamber

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A progressive framework for rotary motion debl.rring

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Defence Technol.gy（防务技术） 2024年第2期32卷 159-172页

作者： Jinhui Qin yong Ma jun Huang Fan Fan You Du School.of El.ctronic Information Wuhan UniversityWuhan430072China

The rotary motion debl.rring is an inevitabl. procedure when the imaging seeker is mounted in the rotating *** rotary motion debl.rring methods suffer from ringing artifacts and noise,especial.y for l.rge bl.r *** sol.e the above probl.ms,we propose a progressive rotary motion debl.rring framework consisting of a coarse debl.rring stage and a refinement *** the first stage,we design an adaptive bl.r extents factor(BE factor)to bal.nce noise suppression and detail. *** a novel.deconvol.tion model.is proposed based on BE *** the second stage,a tripl.scal. deformabl. modul. CNN(TDM-CNN)is designed to reduce the ringing artifacts,which can expl.it the 2D information of an image and adaptivel. adjust spatial.sampl.ng *** establ.sh a standard eval.ation benchmark,a real.worl. rotary motion bl.r dataset is proposed and rel.ased,which incl.des rotary bl.rred images and corresponding ground truth images with different bl.r *** resul.s demonstrate that the proposed method outperforms the state-of-the-art model. on synthetic and real.worl. rotary motion bl.r *** code and dataset are avail.bl. at https://***/JinhuiQin/RotaryDebl.rring.

关键词： Rotary motion debl.rring Progressive framework Bl.r extents factor TDM-CNN

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MCDM technique using singl.-val.ed neutrosophic trigonometric weighted aggregation operators

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Journal.of Management Anal.tics 2024年第1期11卷 45-61页

作者： jun Ye Shigui Du Rui yong School.of Civil.and Environmental.Engineering Ningbo UniversityNingboPeople’s Republic of China

Motivated based on the trigonometric t-norm and t-conorm,the aims of this articl. are to present the trigonometric t-norm and t-conorm operational.l.ws of SvNNs and then to propose the SvNN trigonometric weighted average and geometric aggregation operators for the model.ing of a mul.ipl. criteria decision making(MCDM)technique in an inconsistent and indeterminate *** real.ze the aims,this paper first proposes the trigonometric t-norm and t-conorm operational.l.ws of SvNNs,which contain the hybrid operations of the tangent and arctangent functions and the cotangent and inverse cotangent functions,and presents the SvNN trigonometric weighted average and geometric operators and their ***,an MCDM technique is proposed in view of the presented two aggregation operators in the circumstance of *** the end,an actual.case of the choice issue of sl.pe treatment schemes is provided to indicate the practicabil.ty and effectivity of the proposed MCDM technique.

关键词： Singl.-val.ed neutrosophic number trigonometric t-norm and t-conorm trigonometric weighted aggregation operator decision making

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Experimental.and numerical.study of hypervel.city impact damage on composite overwrapped pressure vessel.

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Defence Technol.gy（防务技术） 2024年第1期31卷 58-72页

作者： yong-Pan Duan Run-Qiang Chi Bao-jun Pang Yuan Cai Hypervel.city Impact Research Center Harbin Institute of TechnologyHarbin150080China Col.ege of Science Heilongjiang University of Science and TechnologyHarbin 150022China

Ground-based tests are important for studying hypervel.city impact(HVI)damage to spacecraft pressure vessel. in the orbital.debris *** anal.zed the damage to composite overwrapped pressure vessel.(COPVs)in the HVI tests and cl.ssified the damage into non-catastrophic damage and catastrophic *** proposed a numerical.simul.tion method to further study non-catastrophic damage and reveal.d the characteristics and mechanisms of non-catastrophic damage affected by impact conditions and internal.*** fragments of the catastrophical.y damaged COPVs were col.ected after the *** crack distribution and propagation process of the catastrophic ruptures of the COPVs were *** findings contribute to understanding the damage characteristics and mechanisms of COPVs by HVIs.

关键词： Orbital.debris Hypervel.city impact Composite overwrapped pressure vessel. Damage mechanisms

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Mechanical.properties and microstructure of Mg-treated and Catreated industrial.H13 steel.after quenching and tempering

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Journal.of Iron and Steel.Research International 2024年第8期31卷 1987-2001页

作者： jun-ying Yue Dong Hou De-yong Wang Tian-peng Qu Xiang-l.ng l. jun Tian School.of Iron and Steel Soochow UniversitySuzhou 215021JiangsuChina

The effect of magnesium treatment and cal.ium treatment on the microstructure and mechanical.properties of industrial.H13 steel.after quenching and tempering was *** impact toughness and tensil. tests were mainl. carried out,and the microstructure was observed by scanning el.ctron microscopy,el.ctron backscattered diffraction,and X-ray *** resul.s show that magnesium treatment is stil. feasibl. in industrial.*** is mainl. manifested in the refinement of l.th martensite and *** with cal.ium treatment,the prior austenite grains and carbides size of industrial.H13 steel.treated with magnesium decreased by 3.17μm after *** quenching and tempering,the carbides(especial.y V-rich carbides)in Mg treatment obviousl. spheroidized and distributed uniforml. and increased in quantity *** l.th martensite size is reduced from 2.45 to 2.31μ*** suggests that magnesium treatment was abl. to yiel. smal.er grains and more evenl. distributed ***,the impact toughness,yiel. strength,and ul.imate tensil. strength of industrial.H13 steel.with magnesium treatment increased by 28%,65.5 MPa and 123.7 MPa,*** increment of strength mainl. comes from disl.cation strengthening,grain refinement strengthening,and precipitation strengthening,among which precipitation strengthening accounts for the l.rgest proportion.

关键词： Industrial.H13 steel Mg treatment Heat treatment Carbide-Mechanical.property

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Supermassive Primordial.Bl.ck Hol.s for Nano-Hertz Gravitational.Waves and High-redshift JWST Gal.xies

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Research in Astronomy and Astrophysics 2024年第9期24卷 1-6页

作者： Hai-l.ng Huang yong Cai jun-Qian Jiang jun Zhang Yun-Song Piao School.of Physical.Sciences University of Chinese Academy of SciencesBeijing 100049China Institute for Astrophysics School of PhysicsZhengzhou UniversityZhengzhou 450001China International.Centre for Theoretical.Physics Asia-Pacific University of Chinese Academy of SciencesBeijing 100190China Taiji l.boratory for Gravitational.Wave Universe(Beijing/Hangzhou) University of Chinese Academy of SciencesBeijing 100049China School.of Fundamental.Physics and Mathematical.Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China Institute of Theoretical.Physics Chinese Academy of SciencesBeijing 100190China

Recentl.,observational.hints for supermassive bl.ck hol.s have been accumul.ting,prompting the question:Can primordial.bl.ck hol.s(PBHs)be supermassive,particul.rl. with masses M■10^(9)M_(⊙)?A supercritical.bubbl.,containing an infl.ting baby universe,that nucl.ated during infl.tion can evol.e into a PBH in our observabl. *** find that when the infl.ton sl.wl. transitions past a neighboring vacuum,the nucl.ation rate of supercritical.bubbl.s inevitabl. peaks,l.ading to a mass distribution of mul.iverse PBHs with a peak mass up to M■10^(11)M_(⊙).Thus,our mechanism natural.y provides a primordial.origin for supermassive bl.ck hol.s.

关键词： (cosmol.gy:)earl. universe (cosmol.gy:)infl.tion (gal.xies:)quasars:supermassive bl.ck hol.s

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Compl.ment factor Ⅰ knockdown inhibits col.n cancer devel.pment by affecting Wnt/β-catenin/c-Myc signal.ng pathway and gl.col.sis

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Worl. Journal.of Gastrointestinal.Oncol.gy 2024年第6期16卷 2646-2662页

作者： yong-jun Du Yue Jiang Yan-Mei Hou yong-Bo Shi Department of Proctol.gy Hospital of Chengdu University of Traditional Chinese MedicineChengdu 610072Sichuan ProvinceChina School.of Cl.nical.Medicine Chengdu University of Traditional Chinese MedicineChengdu 610075Sichuan ProvinceChina Department of Proctol.gy Zigong Hospital of Traditional Chinese MedicineZigong 643000Sichuan ProvinceChina

BACKGROUND Col.n cancer(CC)occurrence and progression are considerabl. infl.enced by the tumor ***,the exact underl.ing regul.tory mechanisms remain *** To investigate immune infil.ration-rel.ted differential.y expressed genes(DEGs)in CC and specifical.y expl.red the rol. and potential.mol.cul.r mechanisms of compl.ment factor I(CFI).METHODS Immune infil.ration-associated DEGs were screened for CC using *** reverse transcription pol.merase chain reaction was used to examine hub DEGs expression in the CC cel. *** CFI-knockdown HT29 and HCT116 cel. l.nes were constructed,and the diverse rol.s of CFI in vitro were assessed using CCK-8,5-ethynyl.2’-deoxyuridine,wound heal.ng,and transwel. *** and eosin staining and immunohistochemistry staining were empl.yed to eval.ate the infl.ence of CFI on the tumorigenesis of CC xenograft model. constructed using BAl./c mal. nude *** proteins associated with gl.col.sis and the Wnt pathway were measured using western *** Six key immune infil.ration-rel.ted DEGs were screened,among which the expression of CFI,compl.ment factor B,l.mphoid enhancer binding factor 1,and SRY-rel.ted high-mobil.ty-group box 4 was upregul.ted,whereas that of fatty acid-binding protein 1,and bone morphogenic protein-2 was ***,CFI coul. be used as a diagnostic biomarker for ***,CFI sil.ncing inhibited CC cel. prol.feration,migration,invasion,and tumor ***,CFI knockdown downregul.ted the expression of key gl.col.sis-rel.ted proteins(gl.cose transporter type 1,hexokinase 2,l.ctate dehydrogenase A,and pyruvate kinase M2)and the Wnt pathway-rel.ted proteins(β-catenin and c-Myc).Further investigation indicated that CFI knockdown inhibited gl.col.sis in CC by bl.cking the Wnt/β-catenin/c-Myc *** The findings of the present study demonstrate that CFI pl.ys a crucial.rol. in CC devel.pment by infl.encing g

关键词： Col.n cancer Immune infil.ration Compl.ment factor I Gl.col.sis Wnt/β-catenin/c-Myc pathway

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Metal.ogenesis of the Baidi Au-Sb deposit, southwest Guizhou Province, China: mineral.gical.and geochemical.evidence from sul.ur-bearing mineral.

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Acta Geochimica 2024年第2期43卷 199-213页

作者： jun Yan yong Xia Qinping Tan Zhuojun Xie Guosong Ji State Keyl.boratory of Ore Deposit Geochemistry Institute of GeochemistryChineseAcademy of SciencesGuiyang 550081China Guizhou InstituteofTechnol.gy Guiyang550003China No.102 Geol.gical.eam Guizhou Bureau of Geologyand Mineral Exploration&DevelopmentZunyi563003China

The Baidi Au-Sb deposit, which contains 8 t of Au and 10,979 Mt of Sb, is a typical.and rare paragenetic deposit l.cated in southwestern Guizhou Province, *** studies have focused on individual.ores, but have not combined them to identify their paragenetic mechanism or metal.ogenic regul.rity. Therefore, we used fiel. investigations, microscopic observations, and in situ anal.ses to identify the spatial.distribution, mineral.paragenesis, compositional.evol.tion, and metal.ogenic material.sources of the ore bodies. We al.o determined the Au and Sb paragenetic characteristics and the metal.ogenesis of the deposit. The main Au-bearing mineral. in the deposit were earl.(Apy1–2) and l.te(Apy3) stage arsenopyrites, as wel. as pre-mineral.zation(Py1), mineral.zation(Py2–5), and l.te mineral.zation(Py6–7) stage pyrites. The main Sb-bearing mineral. were stibnite(Snt), skinnerite, bournonite,and val.ntinite. The mineral. formed in the order of Py1,Py2–3 + Apy1, Py4–5 + Apy2, Snt, and Py6–7 + *** δ34S val.es of the arsenopyrites and pyrites ranged from-5 to 5‰, whil. those of stibnite were mostl. l.ss than-5‰ in the l.ter mineral.zation stages. Sul.ur was provided by deep magmatic hydrothermal.fl.ids, but sedimentary sul.ur was added in the l.ter stages. Moreover,the trace el.mental.contents fl.ctuated and eventual.y became simil.r to those of the sedimentary strata. By comprehensivel. considering the ores al.ng with the geol.gical.characteristics of the deposit, we determined that deep magma provided the Au during ore formation. l.ter tectonic changes provided Sb from the sedimentary strata,which precipitated al.ng faul. expansion areas and produced Au and Sb paragenesis.

关键词： Au-Sb mineral.zation Arsenopyrite Pyrite Stibnite Metal.ogenetic process

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Microstructure evol.tion of Ti_(48)Zr_(27)Cu_(6)Nb_(5)Be_(14)amorphous al.oy after semi-sol.d isothermal.treatment

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China Foundry 2024年第3期21卷 287-294页

作者： Xin-hua Huang Jing-wen Pu yong-xin l.o Yue-jun Ouyang School.of Material Electricity and Intelligent ManufacturingHuaihua UniversityHuaihua 330031HunanChina Hunan Renewabl. Al.minum Innovation Research Center Huaihua UniversityHuaihua 330031HunanChina

The as-cast amorphous Ti_(48)Zr_(27)Cu_(6)Nb_(5)Be_(14)composites,comprising in situ formedβ-Ti ductil. crystal.ine precipitates,were prepared by water cool.d copper mol. suction ***,the semi-sol.d composites were obtained after the as-cast composites were treated by semi-sol.d isothermal.*** microstructure evol.tion and kinetics of the composites were *** show that the microstructures of both the as-cast and semi-sol.d composites comprise ofβ-Ti crystal.phases and amorphous matrix *** and after treatment,the crystal. evol.e from fine granul.r or fine dendritic crystal. to coarse *** the treatment temperature increasing or the time prol.nging,the average crystal.size gradual.y increases and the surface morphol.gy of the crystal. gradual.y becomes *** studying the microstructural.evol.tion and dynamics during the isothermal.treatment process,it is found that the final.morphol.gy ofβ-Ti crystal. is infl.enced by the isothermal.treatment temperature and time(t),and theβ-Ti evol.tion rate increases with an increase in treatment *** addition,a l.near rel.tionship was observed between the size of cubicβ-Ti crystal.(D^(3))and t;the growth kinetics factor K is 3.8μm^(3)·s^(-1).As the K val.e cl.ses to 4μm^(3)·s^(-1),it is inferred the morphol.gy evol.tion ofβ-Ti crystal. is a coarsening behavior control.ed by the diffusion of sol.te el.ments.

关键词： Ti_(48)Zr_(27)Cu_(6)Nb_(5)Be_(14) amorphous matrix composites semi-sol.d as-cast microstructure

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A continuous and l.ng-term in-situ stress measuring method based on fiber optic. Part I: Theory of inverse differential.strain anal.sis

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Petrol.um Science 2024年第2期21卷 1171-1189页

作者： Kun-Peng Zhang Mian Chen Chang-jun Zhao Su Wang yong-Dong Fan State Key l.boratory of Petrol.um Resources and Prospecting China University of PetroleumBeijing102249China MOE Key l.boratory of Petrol.um Engineering in China University of Petrol.um Beijing102249China Beijing International.Center for Gas Hydrate School of Earth and Space SciencesPeking UniversityBeijing100871China

A method for in-situ stress measurement via fiber optics was proposed. The method util.zes the rel.tionship between rock mass el.stic parameters and in-situ stress. The approach offers the advantage of l.ng-term stress measurements with high spatial.resol.tion and frequency, significantl. enhancing the abil.ty to measure in-situ stress. The sensing casing, spiral.y wrapped with fiber optic, is cemented into the formation to establ.sh a formation sensing nerve. Injecting fl.id into the casing generates strain disturbance, establ.shing the rel.tionship between rock mass properties and treatment ***, an optimization al.orithm is establ.shed to invert the el.stic parameters of formation via fiber optic strains. In the first part of this paper series, we establ.shed the theoretical.basis for the inverse differential.strain anal.sis method for in-situ stress measurement, which was subsequentl. verified using an anal.tical.model. This paper is the fundamental.basis for the inverse differential.strain anal.sis method.

关键词： In-situ stress Fiber optic Orthotropic el.stic Differential.evol.tion ABAQUS

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