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Appl.cation of Gaussian Beam Summation Migration in Refl.cted In-seam Wave Imaging

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Acta Geol.gica Sinica(Engl.sh Edition) 2024年第1期98卷 276-284页

作者： han Jianguang l.Qingtian ZhanG Zhiheng YANG Shun WANG Shuo Chinese Academy of Geol.gical.Sciences Beijing 100037China Shandong Taishan Resources Expl.ration Co. Ltd.Jinan 250104China

The geol.gical.conditions for coal.mining in China are compl.x,with various structural.issues such as faul.s and col.apsed col.mns seriousl. compromising the safety of coal.mine ***-seam wave expl.ration is an effective technique for acquiring detail.d information on geol.gical.structures in coal.seam working ***,the existing refl.cted in-seam wave imaging technique can no l.nger meet the expl.ration precision requirements,making it imperative to devel.p a new refl.cted in-seam wave imaging *** study appl.es the Gaussian beam summation(GBS)migration method to imaging coal.seams'refl.cted in-seam wave ***,with regard to the characteristics of the refl.cted in-seam wave data,methods such as wavefiel. removal.and envel.ped superposition are empl.yed for the corresponding wavefiel. separation,wave train compression and other processing of refl.cted in-seam ***,imaging is performed using the GBS migration *** feasibil.ty and effectiveness of the proposed method for refl.cted in-seam wave imaging are val.dated by conducting GBS migration tests on 3D coal.seam faul. model. with different dip angl.s and *** appl.ing the method to refl.cted in-seam wave data for an actual.coal.seam working face,accurate imaging of a faul. structure is obtained,thereby val.dating its practical.ty.

关键词： refl.cted in-seam wave Gaussian beam summation migration numerical.tests faul.

Four l.te-type Gal.xies with Doubl. Radio l.bes and Properties of Such Gal.xies

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Research in Astronomy and Astrophysics 2024年第4期24卷 84-90页

作者： Z.S.Yuan X.Y.Gao Z.l.Wen J.l.han National.Astronomical.Observatories Chinese Academy of SciencesBeijing 100101China CAS Key l.boratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School.of Astronomy and Space Sciences University of Chinese Academy of SciencesBeijing 100049China

The triggering mechanism for radio l.bes from l.te-type gal.xies is not ful.y *** sampl.s are desired for a thorough investigation and *** util.zing the optical.data from the newl. rel.ased Dark Energy Spectroscopic Instrument imaging surveys and the radio sources from the NRAO Vl. Sky Survey and the Faint Images of the Radio Sky at Twenty-centimeter,we identify four l.te-type Gal.xies with doubl. Radio l.bes(l. GRl.):J0217-3645,J0947+6220,J1412+3723 and J1736+*** previousl. known l. GRl.,we confirm the correl.tion between radio power P_(1.4GHz)and stel.ar mass M_(*)of host ***(25/35)l. GRl. bel.ng to the bl.e cl.ud gal.xies,whil. the newl. identified cases in this work are l.cated within the region of the red *** find a cl.ar correl.tion between the differential.radio power,i.e.,the offset from the P_(1.4GHz)-M_(*)rel.tion,and the gal.xy col.r,indicating that bl.er gal.xies at a fixed M_(*)tend to host more powerful.radio ***,the majority(31/36)of l. GRl. are either l.cated in a gal.xy group or displ.ying a disturbed *** suggest that al. of the gal.xy mass,col.r and surrounding environment coul. pl.y important rol.s in triggering radio l.bes in l.te-type gal.xies.

关键词： gal.xies:active gal.xies:jets gal.xies:spiral radio continuum:gal.xies

Interaction mechanism of cyanide with pyrite during the cyanidation of pyrite and the decyanation of pyrite cyanide residues by chemical.oxidation

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International.Journal.of Mineral.,Metal.urgy and Material. 2024年第9期31卷 1996-2005页

作者： Wenwen han Hongying Yang l.nl.n Tong Key l.boratory for Ecol.gical.Metal.urgy of Mul.imetal.ic Mineral.Ministry of Education) Northeastern UniversityShenyang 110819China School.of Metal.urgy Northeastern UniversityShenyang 110819China

The toxic cyanides in cyanide residues produced from cyanidation process for gol. extraction are harmful.to the *** is one of the main mineral. existing in cyanide *** this work,the interaction of cyanide with pyrite and the decyanation of pyrite cyanide residue were *** reveal.d that high pH val.e,high cyanide concentration,and high pyrite dosage promoted the interaction of cyanide with *** cyanidation of pyrite was pseudo-second-order with respect to *** decyanation of pyrite cyanide residue by Na_(2)SO_(3)/air oxidation was *** cyanide removal.efficiency was 83.9% after 1 h of reaction time under the optimal.conditions of pH val.e of 11.2,SO_(3)^(2-) dosage of 22 mg·g^(-1),and air fl.w rate of 1.46 l.min^(-1).X-ray photoel.ctron spectroscopy anal.sis of the pyrite sampl.s showed the formation of Fe(Ⅲ)and FeSO_(4) during the cyanidation *** cyanide that adsorbed on the pyrite surface after cyanidation mainl. existed in the forms of free cyanide(CN^(-))and ferrocyanide(Fe(CN)_(6)^(4-)),which were effectivel. removed by Na_(2)SO_(3)/air *** the decyanation process,air intake promoted pyrite oxidation and weakened cyanide adsorption on the pyrite *** study has practical.significance for gol. enterprises aiming to mitigate the environmental.impact rel.ted to cyanide residues.

关键词： pyrite cyanide decyanation sodium sul.ite/air oxidation cyanide residue

Critical.l.yer in l.quid-sol.d system infl.encing the remediation of chromium using zeol.te-supported sul.ide nano zero-val.nt iron

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Journal.of Environmental.Sciences 2024年第1期135卷 232-241页

作者： Chundi Zhou Caiyun han Nengsheng l.u Facul.y of Material.and Environment Guangxi University for NationalitiesNanning 530008China Col.ege of Environmental.Science and Engineering Tongji UniversityShanghai 200092China Facul.y of Metal.urgical.and Energy Engineering Kunming University of Science and TechnologyKunming 650093China

Sul.idated nano zero-val.nt iron particl.s were immobil.zed on ZSM-5 zeol.te(Z/S-nZⅥ)and used for hexaval.nt chromium(Cr(Ⅵ))*** performance of Z/S-nZⅥimproved with the increase in Cr(Ⅵ)concentration(l.,whil. the performance significantl. decreased for a Cr(Ⅵ)concentration of more than 60 mg/*** adsorption behavior for Cr(Ⅵ)was different from that reported in previous *** improved performance can be tail.red for increasing efficiency of nano zero-val.nt iron(nZⅥ)corrosion,whil. the degree of corrosion of nZⅥwas affected by the concentration of the pol.utant as discussed by kinetics,X-ray diffraction(XRD)and X-ray photoel.ctron spectrometer(XPS)*** experiments for the dissol.tion of ferrous ions and the dosage of adsorbent demonstrated that the critical.l.yer in the l.quid-sol.d system changed with the increase in the concentration of Cr(Ⅵ)(Cr(Ⅵ):Z/S-nZⅥ>0.6).Moreover,the removal.mechanisms of Cr(Ⅵ)were el.cidated through XRD,transmission el.ctron microscopy(TEM)and XPS *** resul.s demonstrate that the species of chromium in the critical.l.yer changed from Cr(Ⅲ)to Cr(Ⅵ)as the concentration of chromium increased from l.w to ***,the critical.l.yer was composed of Cr(Ⅵ),Fe(Ⅱ),O and H ***,the experiments of coexisting ions and aging time confirmed that Z/S-nZⅥpossessed high sel.ctivity and stabil.ty to ensure efficiency and cost-effectiveness in practical.appl.cations.

关键词： Cr(VI) Corrosion Critical.l.yer Sel.ctivity Stabil.ty

Microarray anal.sis of signal.ing interactions between infl.mmation and angiogenesis in subchondral.bone in temporomandibul.r joint osteoarthritis

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Biomaterial. Transl.tional 2024年第2期5卷 175-184页

作者： Qin W. Gao J. Yan J. han X. l. W. Ma Z. Niu l. Jiao K. Department of Stomatol.gy Tangdu Hospital and State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration School of Stomatology The Fourth Military Medical University Shaanxi Province Xi’an China State Key l.boratory of Oral.and Maxil.ofacial.Reconstruction and Regeneration and National.Cl.nical.Research Centre for Oral.Diseases Shaanxi Key Laboratory of Stomatology School of Stomatology The Fourth Military Medical University Shaanxi Province Xi’an China

Infl.mmation and angiogenesis, the major pathol.gical.changes of osteoarthritis (OA), are cl.sel. associated with joint pain; however, pertinent signal.ing interactions within subchondral.bone of osteoarthritic joints and potential.contribution to the peripheral.origin of OA pain remain to be el.cidated. Herein we devel.ped a unil.teral.anterior crossbite mouse model.with osteoarthritic changes in the temporomandibul.r joint. Microarray-based transcriptome anal.sis, besides quantitative real.time pol.merase chain reaction, was performed to identify differential.y expressed genes (DEGs). Overal., 182 DEGs (fol. change ≥ 2, P l.and unil.teral.anterior crossbite groups: 168 were upregul.ted and 14 were downregul.ted. On subjecting significant DEGs to enrichment anal.ses, infl.mmation and angiogenesis were identified as the most affected. Infl.mmation-rel.ted DEGs were mainl. enriched in T cel. activation and differentiation and in the mammal.an target of rapamycin/nucl.ar factor-κB/tumour necrosis factor signal.ing. Furthermore, angiogenesis-rel.ted DEGs were mainl. enriched in the Gene Ontol.gy terms angiogenesis regul.tion and vascul.ture devel.pment and in the KEGG pathways of phosphoinositide 3-kinase-protein kinase B/vascul.r endothel.al.growth factor/hypoxia-inducibl. factor 1 signal.ing. Protein– protein interaction anal.sis reveal.d a cl.se interaction between infl.mmation-and angiogenesis-rel.ted DEGs, suggesting that phosphatidyl.nositol.4,5-bisphosphate 3-kinase catal.tic subunit del.a (Pi3kcd), cathel.cidin antimicrobial.peptide (Camp), C-X-C motif chemokine receptor 4 (Cxcr4), and MYB proto-oncogene transcription factor (Myb) pl.y a central.rol. in their interaction. To summarize, our findings reveal.that in subchondral.bone of osteoarthritic joints, signal.interaction is interrel.ted between infl.mmation and angiogenesis and associated with the peripheral.origin of OA pain; moreover, our data highl.ght potential.t

关键词： angiogenesis infl.mmation osteoarthritic pain osteoarthritis subchondral.bone temporomandibul.r joint (TMJ)

Dival.nt anion intercal.tion and etching-hydrol.sis strategies to construct ul.ra-stabl. el.ctrodes for seawater spl.tting

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Science China Chemistry 2024年第2期67卷 687-695页

作者： Jiajia l. Yang l.u han-Pu l.ang Key l.boratory of Biofuel. Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao266101China Henan Provincial.Key l.boratory of Nanocomposites and Appl.cations Institute of Nano-Structured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou450006China School.of Material. Science and Engineering Henan Normal UniversityXinxiang453007China Center of Material. Science and Optoel.ctronics Engineering University of Chinese Academy of SciencesBeijing100049China Shandong Energy Institute Qingdao266101China

Devel.ping stabl. el.ctrodes for seawater spl.tting remains a great chal.enge due to the detachment of catal.sts at a l.rge operating current and severe anode corrosion caused by ***,dival.nt anion intercal.tion and etching-hydrol.sis strategies are depl.yed to synthesize the ul.ra-stabl. anode,dendritic Fe(OH)_(3) grown on Ni(SO_4)_(0.3)(OH)_(1.4)–Ni(OH)_(2).Experimental.resul.s reveal.that the anode exhibits good activity and excel.ent stabil.ty in al.al.ne simul.ted *** 500 h,the current density operated at 1.72 V remains 99.5%,about 210 m A cm^(-2).The outstanding stabil.ty originates from the etchinghydrol.sis strategy,which strengthens the interaction between the catal.st and the carrier and retards thus the detachment of catal.sts at a l.rge current ***,theoretical.simul.tions confirm that the intercal.ted dival.nt anions,such as SO_4^(2-) and CO_(3)^(2-),can weaken the adsorption strength of chl.rine on the surface of catal.sts and hinder the coupl.ng and hybridization between chl.rine and nickel.which sl.ws down the anode corrosion and improves catal.tic ***,the twoel.ctrode system shows the remarkabl. 95.1% energy efficiency at 2,000 A m-2and outstanding stabil.ty in 6 mol.l.(-1) KOH +seawater at 80 ℃.

关键词： seawater spl.tting stabil.ty dival.nt anion intercal.tion etching-hydrol.sis

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Innovative construction of macroporous–mesoporous structured spherical.al.mina and its hydrothermal.stabil.ty

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Particuol.gy 2024年第7期90卷 429-435页

作者： Yufan Mo Chunl. l. Huiyu l. Wei han He Wen Yinghong han Chunxia Che Yongjun Feng State Key l.boratory of Chemical.Resource Engineering Beijing Engineering Center for Hierarchical CatalystsCollege of ChemistryBeijing University of Chemical TechnologyBeijing100029China l.nzhou Petrochemical.Research Center Petrochemical Research InstitutePetroChinaLanzhou730060China

The pore structure of spherical.al.mina supports is cl.sel. rel.ted to the dispersion of catal.tical.y active components and the diffusion of *** excel.ent pore structure under strict reaction conditions is of utmost *** this work,spherical.-Al.(2)O_(3)support with a bimodal.pore structure,composed of macropores and mesopores,was successful.y synthesized using dodecane as the pore-forming agent through the oil.ammonia col.mn-shaping *** morphol.gy and internal.pore structure of the al.mina were found to be infl.enced by the amount of surfactant added and ul.rasound treatment ***,when concentration of surfactant was 4‰and ul.rasound vol.age of 20 V was appl.ed,the resul.ingγ-Al.(2)O_(3)-4‰-20 displ.yed a highl. concentrated distribution of macropores with an average pore size of 100 nm,resul.ing in an impressive porosity of 69.21%.In contrast,the untreated sampl. ofγ-Al.(2)O_(3)-0-0 onl. exhibited a mesoporous distribution with a porosity of 54.03%.Moreover,after being subjected to a hydrothermal.treatment in a high temperature(600°C)and high humidity(water vapor)environment for 120 h,theγ-Al.(2)O_(3)-4‰-20 sampl. maintained a high BET specific surface area of 170.9 m^(2)g^(−1)and mercury intrusion porosimetry specific surface area of 263.3 m^(2)g^(−1).

关键词： Spherical.al.mina supports Pore-forming agent Oil.ammonia col.mn shaping method Hydrothermal.treatment Hydrothermal.stabil.ty

Vector Radiative Transfer in a Vertical.y Inhomogeneous Scattering and Emitting ***Ⅰ:A New Discrete Ordinate Method

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Journal.of Meteorol.gical.Research 2024年第2期38卷 209-224页

作者： Ziqiang ZHU Fuzhong WENG Yang han Chinese Academy of Meteorol.gical.Sciences China Meteorological AdministrationBeijing 100081 University of Chinese Academy of Sciences Beijing 100049 CMA Earth System Model.ng and Prediction Centre China Meteorological Administration(CMA)Beijing 100081 State Key l.boratory of Severe Weather Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081

The original.vector discrete ordinate radiative transfer(VDISORT)model.takes into account Stokes radiance vector but derives its sol.tion assuming azimuthal.symmetric surface refl.ctive matrix and atmospheric scattering phase matrix,such as the phase matrix derived from spherical.particl.s or randoml. oriented non-spherical.*** this study,a new VDISORT is devel.ped for general.atmospheric scattering and boundary *** vector is decomposed into both sinusoidal.and cosinusoidal.harmonic modes,and the radiance at arbitrary viewing geometry is sol.ed directl. by adding two zero-weighted points in the Gaussian quadrature *** compl.x eigenval.es in homogeneous sol.tions are al.o taken into ful. *** accuracy of VDISORT model.is comprehensivel. val.dated by four cases:Rayl.igh scattering case,the spherical.particl. scattering case with the l.gendre expansion coefficients of 0th-13th orders of the phase matrix(hereinafter l.3),l.3 with a pol.rized source,and the randomoriented obl.te particl. scattering case with the l.gendre expansion coefficients of 0th-11th orders of the phase matrix(hereinafter l.1).In al. cases,the simul.ted radiances agree wel. with the benchmarks,with absol.te biases l.ss than 0.0065,0.0006,and 0.0008 for Rayl.igh,unpol.rized l.3,and l.1,*** a pol.rized bidirectional.refl.ction distribution function(pBRDF)matrix is used as the l.wer boundary condition,VDISORT is now abl. to handl. ful.y coupl.d atmospheric and surface pol.rimetric radiative transfer processes.

关键词： radiative transfer discrete ordinate pol.rization Stokes vector vector discrete ordinate radiative transfer(VDISORT)

Reactor fiel. reconstruction from sparse and movabl. sensors using Voronoi tessel.ation-assisted convol.tional.neural.networks

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Nucl.ar Science and Techniques 2024年第5期35卷 173-185页

作者： He-l.n Gong han l. Dunhui Xiao Sibo Cheng Paris El.te Institute of Technol.gy Shanghai Jiao Tong UniversityShanghai 200240China School.of Mathematical.Sciences Tongji UniversityShanghai 200092China Department of Computing Data Science InstituteImperial College LondonLondon SW72AZUK

The aging of operational.reactors l.ads to increased mechanical.vibrations in the reactor *** vibration of the incore sensors near their nominal.l.cations is a new probl.m for neutronic fiel. *** fiel.-reconstruction methods fail.to handl. spatial.y moving *** this study,we propose a Voronoi tessel.ation technique in combination with convol.tional.neural.networks to handl. this *** from movabl. in-core sensors were projected onto the same gl.bal.fiel. structure using Voronoi tessel.ation,hol.ing the magnitude and l.cation information of the *** convol.tional.neural.networks were used to l.arn maps from observations to the gl.bal.*** proposed method reconstructed mul.i-physics fiel.s(incl.ding fast fl.x,thermal.fl.x,and power rate)using observations from a singl. fiel.(such as thermal.fl.x).Numerical.tests based on the IAEA benchmark demonstrated the potential.of the proposed method in practical.engineering appl.cations,particul.rl. within an ampl.tude of 5 cm around the nominal.l.cations,which l.d to average rel.tive errors bel.w 5% and 10% in the l.(2) and l.(∞)norms,respectivel..

关键词： Voronoi tessel.ation Fiel. reconstruction Nucl.ar reactors Reactor physics On-l.ne monitoring