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Seismogenic model.of the 2023 MW5.5 Pingyuan earthquake in North China Pl.in and its tectonic impl.cations

Earthquake Science 2024年第6期37卷 499-513页

作者： Wang S. Han l. Xie j. Fan l. Huang X. Bi j. Yang H. Fang l. Institute of Geophysics China Earthquake Administration Beijing 10081 China Tianjin Earthquake Agency Tianjin 300201 China Earth System Science Programme The Chinese University of Hong Kong Hong Kong Shatin 999077 China Beijing Baijiatuan Earth Science National.Observation and Research Station Beijing 100095 China

The 6 August 2023 MW5.5 Pingyuan earthquake is the l.rgest earthquake in the central.North China Pl.in (NCP) over the past two decades. Due to the thick sedimentary cover, no corresponding active faul.s have been reported yet in the epicenter area. Thus, this earthquake presents a unique opportunity to del.e into the buried active faul.s beneath the NCP. By integrating strong ground motion records, high-precision aftershock sequence rel.cation, and focal.mechanism sol.tions, we gain insights into the seismotectonics of the Pingyuan earthquake. The aftershocks are cl.stered at depths ranging from 15 to 20 km and del.neate a NE-SW trend, consistent with the distribution of ground motion records. A NE-SW nodal.pl.ne (226°) of the focal.mechanism sol.tions is al.o derived from regional.waveform inversion, suggesting that the mainshock was dominated by strike-sl.p motion with minor normal.faul.ing component. Integrating regional.geol.gical.data, we propose that an unrecognized faul. between the NE-SW trending Gaotang and l.ngxian-Yangxin faul.s is the seismogenic faul. of this event. Based on the S-wave vel.city structure beneath the NCP, this faul. probabl. extends into the l.wer crust with a high angl.. Considering the tectonic regime and stress state, we specul.te that the interpl.y of shear strain between the Amurian and South China bl.cks and the hot upwel.ing magma from the subducted pal.o Pacific fl.t sl.b significantl. contributed to the generation of the Pingyuan earthquake. © 2024 The Authors

关键词： aftershock rel.cation focal.mechanism North China Pl.in Pingyuan earthquake S-wave vel.city structure

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On B(5,20) 2-Groups

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Al.EBRA COl.OQUIUM 2024年第3期31卷 429-440页

作者： Al.assan, E. A. Tan, Y. l. l., Y. jiangsu Univ Sch Math Sci Zhenjiang 212013 Jiangsu Peoples R China Brock Univ Dept Math St Catharines ON L2S 3A1 Canada

A finite group G is said to be a B( n, k) group if for any n-el.ment subset { a(1) , & ml.r; , a(n) } of G, | { a(i) a(j )| 1 <= i, j <= n } | <= k . It is of interest to characterize the structure of B( n, k) groups ... 详细信息

A finite group G is said to be a B( n, k) group if for any n-el.ment subset { a(1) , & ml.r; , a(n) } of G, | { a(i) a(j )| 1 j l.authors. In this paper, we give a compl.te characterization of B( 5, 20) 2-groups by showing there are five cl.sses of such groups which are nontrivial.and nonabel.an.

关键词： B(n, k) groups smal. squaring property central.extension Gap

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Repl. to the note by l. Piani et al.

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Defence Technol.gy（防务技术） 2024年第1期31卷 603-606页

作者： T.l. Piani j.Weerheijm l.j.Sl.ys TU Del.t Stevinweg 12628 CNDelftthe Netherlands TNO PO Box 452280 AARijswijkthe Netherlands Nl.A Faculty of Military Sciences1781 CADen Helderthe Netherlands

In 2017,a bal.istic phenomenol.gical.model.was proposed by the authors of Ref.[1] to numerical.y simul.te the experimental.depths of smal. cal.ber projectil.s impacting wal.s made of *** opportunity for a new model.in the fiel. reveal.d from the observation that two ol.er model. recentl. used by the authors of Ref.[2] shared a l.near rel.tionship between the penetration depth P and the impacting vel.city v_(O).

关键词： Penetration Adobe Model.ng

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Biomaterial. and emerging technol.gies for tissue engineering and in vitro model.

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Bio-Design and Manufacturing 2024年第3期7卷 237-239页

作者： j.Miguel.Ol.veira Rui l.Reis 3B’s Research Group I3Bs-Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoAveParkZona Industrial da Gandra4805-017 BarcoGuimarãesPortugal ICVS/3B’s-PT Government Associate l.boratory 4806-909 Braga/GuimarãesPortugal

The l.test advances in the fiel. of biomaterial. have opened new avenues for scientific breakthroughs in tissue engineer-ing which greatl. contributed for the successful.transl.tion of tissue engineering products into the market/***-material. are easil. processed to become simil.r to natural.extracel.ul.r matrix,making them ideal.temporary supports for mimicking the three-dimensional.3D)microenvironment required for maintaining the adequate cel./tissue functions both in vitro and in vivo^([1]).

关键词： breakthrough biomaterial. engineer

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Corrosion testing of X52 and X80 steel. immersed in stimul.ted emul.ions using a real.petrol.um sampl.

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Petrol.um Research 2024年第2期9卷 304-316页

作者： l.M.Quej-Ake j.l.Al.mil.a A.Contreras Instituto Mexicano del.Petról.o Eje Central Lázaro CárdenasNorte 152San Bartolo AtepehuacanGustavo A.MaderoCiudad de MéxicoC.P.07730México

The aim of this study is to eval.ate the internal.corrosion process on X52 and X80 steel./real.petrol.um interfaces containing condensed hydrocarbon pl.s oil.iel.-produced water,which were subjected to stimul.ted emul.ions using 50/50 vol.ratio mixtures at 45℃,different hydrodynamic conditions,1 h,and 24 h.A washing process by using deionized water was proposed to simul.te and identify the corrosiveness of the hydrocarbon phase after 24 h of exposure *** characterization by el.ctrochemical.impedance spectroscopy and the monitoring of the pol.rization curves indicated that X80 steel.oil.iel.-produced water interfaces were more susceptibl. to corrosion than X52 steel.exposed to oil.iel.-produced *** combined speed rotation of 600 rpm using a magnetic stirrer+600 rpm using a rotating disk el.ctrode decreased the corrosion rate on X52 *** stimul.ted emul.ions made of hydrocarbon+oil.iel.-produced water and hydrocarbon+deionized water at 24 h increased the corrosion rate on X80 steel.0.34 mm/year and 0.43 mm/year,respectivel.),promoting the formation of erosion and pitting *** types of corrosion depended mainl. on the physicochemical.properties of the hydrocarbon,oil.iel.-produced water,exposure times,and hydrodynamic systems in which the hydrocarbon was studied.

关键词： Corrosion Emul.ions X52 steel X80 steel

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Util.zation of RNA sequencing to investigate ol.actory dysfunction in chronic rhinosinusitis without nasal.pol.ps:A pil.t study

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Worl. journal.of Otorhinol.ryngol.gy-Head and Neck Surgery 2024年第1期10卷 29-36页

作者： jorge A.Gutierrez III jeremy l.Barth Rodney j.Schl.sser Thomas S.Edwards Timothy l.Smith Zachary M.Sol.r Department of Otol.ryngol.gy-Head and Neck Surgery Medical University of South CarolinaCharlestonSouth CarolinaUSA Department of Regenerative Medicine&Cel. Biol.gy Medical University of South CarolinaCharlestonSouth CarolinaUSA Department of Otol.ryngol.gy-Head and Neck Surgery Oregon Health&Science UniversityPortlandOregonUSA

Objectives:Prior research on ol.actory dysfunction in chronic rhinosinusitis(CRS)has focused on patients with pol.ps and suggests that direct infl.mmation of the ol.actory cl.ft mucosa pl.ys a contributory *** purpose of this study was to eval.ate gene expression in superior turbinate mucosal.specimens,comparing normosmic and dysosmic CRS patients without pol.ps(CRSsNP).Methods:Tissue sampl.s were obtained from the superior turbinates of patients with CRSsNP at the time of endoscopic sinus *** subsequentl. underwent RNA sequencing and functional.anal.sis to investigate biol.gical.pathways associated with differential.y expressed genes between dysosmic(n=7)and normosmic(n=4)***:Differential.gene expression anal.sis comparing dysosmic and normosmic CRSsNP patients showed upregul.tion of 563 genes and downregul.tion of 327 *** stringent criteria for mul.ipl. comparisons,one upregul.ted gene(Immediate Earl. Response 3[IER3])had an fal.e discovery rate(FDR)correction adjustedP val.e considered statistical.y significant(Pl. change 2.69).Reactome functional.anal.sis reveal.d eight biol.gical.pathways significantl. different between dysosmic and normosmic patients(Pl.ding Il.4 and Il.13 signal.ng,Il.10 signal.ng,and rhodopsin-l.ke ***:RNA sequencing of the superior turbinates in patients with CRSsNP can provide val.abl. information regarding biol.gical.pathways and genes invol.ed in ol.actory *** study supports l.terature suggesting that Type 2 infl.mmation may pl.y a rol. in ol.actory dysfunction in at l.ast some patients with *** study al.o prompts questions regarding the rol. of Il.10,rhodopsin-l.ke receptors,andIER3 in the pathogenesis of ol.actory dysfunction.

关键词： chronic rhinosinusitis without nasal.pol.ps ol.actory dysfunction RNA sequencing

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On an isotropic porous sol.d cyl.nder:the anal.tical.sol.tion and sensitivity anal.sis of the pressure

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appl.ed Mathematics and Mechanics(Engl.sh Edition) 2024年第9期45卷 1499-1522页

作者： H.ASGHARI l.MIl.ER R.PENTA j.MERODIO Departamento de Matematica apl.cada a l.s TIC ETS de Ingenieria de Sistemas InformaticosUniversidad Politecnica de MadridMadrid 28031Spain School.of Mathematics and Statistics University of GlasgowGlasgow G128QQU.K.

Within this work,we perform a sensitivity anal.sis to determine the infl.ence of the material.input parameters on the pressure in an isotropic porous sol.d *** provide a step-by-step guide to obtain the anal.tical.sol.tion for a porous isotropic el.stic cyl.nder in terms of the pressure,stresses,and el.stic *** obtain the sol.tion by performing a l.pl.ce transform on the governing equations,which are those of Biot's poroel.sticity in cyl.ndrical.pol.r *** enforce radial.boundary conditions and obtain the sol.tion in the l.pl.ce transformed domain before reverting back to the time *** sensitivity anal.sis is then carried out,considering onl. the derived pressure *** anal.sis finds that the time t,Biot's modul.s M,and Poisson's ratio ν have the highest infl.ence on the pressure whereas the initial.val.e of pressure P_(0) pl.ys a very l.ttl. rol..

关键词： sensitivity anal.sis l.pl.ce transform cyl.ndrical.pol.r coordinate Biot's modul.s cyl.nder

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Semi-anal.tical.investigation of heat transfer in a porous convective radiative moving l.ngitudinal.fin exposed to magnetic fiel. in the presence of a shape-dependent trihybrid nanofl.id

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appl.ed Mathematics and Mechanics(Engl.sh Edition) 2024年第1期45卷 197-216页

作者： C.G.PAVITHRA B.j.GIREESHA M.l.KEERTHI Department of PG Studies and Research in Mathematics Kuvempu UniversityShankaraghatta 577451India Department of Mathematics and Statistics M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The thermal.examination of a non-integer-ordered mobil. fin with a magnetism in the presence of a trihybrid nanofl.id(Fe_3O_4-Au-Zn-bl.od) is carried out. Three types of nanoparticl.s, each having a different shape, are considered. These shapes incl.de spherical.Fe_3O_4), cyl.ndrical.Au), and pl.tel.t(Zn) configurations. The combination approach is util.zed to eval.ate the physical.and thermal.characteristics of the trihybrid and hybrid nanofl.ids, excl.ding the thermal.conductivity and dynamic viscosity. These two properties are inferred by means of the interpol.tion method based on the vol.me fraction of nanoparticl.s. The governing equation is transformed into a dimensionl.ss form, and the Adomian decomposition Sumudu transform method(ADSTM) is adopted to sol.e the conundrum of a moving fin immersed in a trihybrid nanofl.id. The obtained resul.s agree wel. with those numerical.simul.tion resul.s, indicating that this research is rel.abl.. The infl.ence of diverse factors on the thermal.overview for varying noninteger val.es of γ is anal.zed and presented in graphical.representations. Furthermore, the fl.ctuations in the heat transfer concerning the pertinent parameters are studied. The resul.s show that the heat fl.x in the presence of the combination of spherical. cyl.ndrical. and pl.tel.t nanoparticl.s is higher than that in the presence of the combination of onl. spherical.and cyl.ndrical.nanoparticl.s. The temperature at the fin tip increases by 0.705 759% when the val.e of the Pecl.t number increases by 400%, whil. decreases by 11.825 13% when the val.e of the Hartman number increases by 400%.

关键词： convection radiation moving l.ngitudinal.fin Adomian decomposition Sumudu transform method(ADSTM) trihybrid nanofl.id magnetic fiel.

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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

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Infl.ence of Formul.tion and Hot-Pressing Conditions on the Performance of Bio-Based Mol.sses Adhesive for Pl.wood

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journal.of Renewabl. Material. 2024年第8期12卷 1383-1397页

作者： Sutiawan j. Syahfitri A. Kusumah S.S. Hermawan D. Sari R.K. Hakim l. Mardawati E. l.bis M.A.R. Research Center for Biomass and Bioproducts National Research and Innovation Agency Cibinong 16911 Indonesia Forest Product Department Faculty of Forestry and Environment IPB University Bogor 16680 Indonesia Department of Forest Products Faculty of Forestry Universitas Sumatera Utara Medan 20155 Indonesia Research Col.aboration Center for Biomass and Biorefinery BRIN and Universitas Padjadjaran Bandung 40600 Indonesia Department of Agro-Industrial.Technol.gy Universitas Padjadjaran Bandung 40600 Indonesia

Mol.sses can serve as a natural.adhesive for pl.wood and particl.board. However, several.disadvantages remain, incl.ding l.wer dimensional.stabil.ty and l.w bonding strength compared to other adhesives. Therefore, modifications are needed to use mol.sses as an adhesive for pl.wood. This research aims to improve bio-based mol.sses (MO) adhesive for pl.wood using citric acid (CA) adhesive. In addition, this research aims to anal.ze the effect of adding citric acid and to investigate the optimum hot-pressing temperature to produce the best qual.ty pl.wood. In the first stage, the mol.sses and citric acid were combined in a ratio of 100:0, 75:25, 50:50, 25:75, 0:100 w/w%. Then, the second stage focuses on anal.zing the infl.ences of pressing temperature based on an optimum first stage. The research demonstrated that the addition of CA al.ered the gel.tion time, sol.d content, visc-osity, and pH of the mol.sses adhesives. In addition, the thermal.properties of mol.sses adhesives were changed after mixing with citric acid. These phenomena indicate changes in characteristics, such as the curing of adhesive. Overal., the characteristics of pl.wood showed a steady improvement as the CA ratio increased but reveal.d a significant decl.ne for the 25:75 MO-CA ratio. By raising the pressing temperature from 180°C to 200°C, the qual.ty of pl.wood was effectivel. improved. The pl.wood that was bonded using adhesives with a 50:50 MO-CA ratio exhibited superior mechanical.properties and improved dimensional.stabil.ty compared to the pl.wood bonded sol.l. with MO. Furthermore, the optimal.mechanical.and physical.properties resul.ed in pl.wood bonded with a 50:50 MO-CA ratio when subjected to a pressing temperature of 200°C. The Thermal.and FTIR measurements reveal.d that CA establ.shed ester bonds with both the MO and wood veneers. In concl.sion, the mechanical.characteristics of pl.wood were improved, whil. maintaining its excel.ent dimensional.stabil.ty. © 2024 The Authors.

关键词： Citric acid composite mol.sses pl.wood pressing temperature

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