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Inf.ow and outf.ow permeability tests in a very sof. clay under low stresses

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Journal of.rock Mechanics and Geotechnical Engineering 2024年第8期16卷 3270-3283页

作者： J.W.S.Vargas f.A.b.Danziger f.r.Lopes T.Lunne f.deral University of.rio de Janeiro Rio de JaneiroBrazil Norwegian Geotechnical Institute OsloNorway

In situ inf.ow and outf.ow permeability tests with the bAT probe at SarapuíII sof. clay test site are presented.A description of.the bAT permeability test is provided,discussing its advantages and shortcomings,especially in the case of.very sof. clays under low *** pressures were monitored during probe installation and were f.und to be slightly lower than piezocone u2 pore pressures,consistent with the position of.the *** role of.f.lter tip saturation was investigated af.er the usual saturation procedure provided an unsatisf.ctory pore pressure response during probe *** show that the vacuum saturation procedure provides adequate response during installation and increases the reliability of.the coef.icient of.permeability determination in early *** inf.ow and outf.ow tests yielded similar results,indicating that caref.l execution of.the test can lead to good test repeatability regardless of.the loading *** sequences of.alternated inf.ow and outf.ow tests have yielded similar results,indicating that soil reconsolidation and f.lter clogging were negligible in the tests *** are presented concerning the relationship between index parameters and the in situ coef.icient of.permeability f.r SarapuíII clay,which plot outside the range of.existing databases.

关键词： Permeability test Sof. clay bAT probe Inf.ow and outf.ow tests

radiative capture of.proton through the ^(14)N(p,γ)^(15)O reaction at low energy

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Chinese Physics C 2024年第4期48卷 183-192页

作者： b.f.Irgaziev Abdul Kabir Jameel-Un Nabi National University of.Uzbekistan Tashkent 100174Uzbekistan Space and Astrophysics research lab National Centre of GIS and Space ApplicationsDepartment of Space ScienceInstitute of Space TechnologyIslamabad 44000Pakistan University of.Wah Quaid AvenueWah Cantt 47040PunjabPakistan

The CNO cycle is the main source of.energy in stars more massive than our *** process def.nes the energy production,the duration of.which can be used to determine the lif.time of.massive *** cycle is an important tool f.r determining the age of.globular *** proton capture via p+^(14)N→^(15)O+γ,at energies of.astrophysical interest,is an important process in the CNO *** this project,we apply a potential model to describe both non-resonant and resonant reactions in the channels where radiative capture occurs through electric E1 *** employed the r-matrix method to describe the ongoing reactions via M1 resonant transitions,when it was not possible to correctly reproduce the experimental data using the potential *** partial components of.the astrophysical S-f.ctor are calculated f.r all possible electric and magnetic dipole transitions in ^(15)*** linear extrapolated S-f.ctor at zero energy(S(0))agrees well with earlier reported values f.r all transition types considered in this *** on the value of.the total astrophysical S-f.ctor,depending on the collision energy,we calculate the nuclear reaction rates f.r p+^(14)N→^(15)O+γ.The computed rates agree well with the results reported in the NACrE II Collaboration and most recent existing measurements.

关键词： CNO cycle potential model r-matrix method cross-section astrophysical S-f.ctor nuclear rates.

Thermo-kinetic characteristics on stabilizing hetero-phase interf.ce of.metal matrix composites by crystal plasticity f.nite element method

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Journal of.Materials Science & Technology 2024年第2期169卷 53-67页

作者： Y.b.Zhang S.J.Song f.Liu State Key Laboratory of.Solidif.cation Processing Northwestern Polytechnical UniversityXi’an 710072China Analytical&Testing Center Northwestern Polytechnical UniversityXi’an 710072China

Using dislocation-based constitutive modeling in three-dimension crystal plasticity f.nite element(3D CPf.)simulations,co-def.rmation and instability of.hetero-phase interf.ce in dif.erent material systems were herein studied f.r polycrystalline metal matrix composites(MMCs).Local stress and strain f.elds in two types of.3layer MMCs such as f.c/f.c Cu-Ag and f.c/bcc Cu-Nb have been predicted under simple compressive ***,more severe strain-induced interf.ce instability can be observed in the f.c/bcc systems than in the f.c/f.c systems upon ref.ning to metallic nanolayered composites(MNCs).by detailed analysis of.stress and strain localization,it has been demonstrated that the interf.ce instability is always accompanied by high-stress concentration,i.e.,thermodynamic characteristics,or high strain prevention i.e.,kinetic characteristics,at the hetero-phase *** then f.llows that the thermodynamic driving f.rceG and the kinetic energy barrier Q during dislocation and shear banding can be adopted to classif. the def.rmation modes,f.llowing the so-called thermo-kinetic *** by inserting a high density of.high-energy interf.ces into the Cu-Nb composites,such thermo-kinetic integration at the hetero-phase interf.ce allows a successf.l establishment of.MMCs with the high△G-high Q def.rmation mode,which ensures high hardening and unif.rm strain distri-bution,thus ef.iciently suppressing the shear band,stabilizing the hetero-phase interf.ce,and obtaining an exceptional combination in strength and *** hetero-phase interf.ce chosen by a couple of.thermodynamics and kinetics can be def.ned as breaking the thermo-kinetic correlation and has been proposed f.r artif.cially designing MNCs.

关键词： Thermodynamics and kinetics Physics-based constitutive modeling Hetero-phase interf.ce Crystal plasticity f.nite element

Probing the bardeen-Kiselev black hole with the cosmological constant caused by Einstein equations coupled with nonlinear electrodynamics using quasinormal modes and greybody bounds

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Communications in Theoretical Physics 2024年第6期76卷 102-119页

作者： S r Wu b Q Wang Z W Long College of.Physics Guizhou UniversityGuiyang 550025China College Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang 550025China

In this work,we investigate a static and spherically symmetric bardeen-Kiselev black hole(bH)with the cosmological constant,which is a solution of.the Einstein-non-linear Maxwell f.eld *** compute the quasinormal f.equencies f.r the bardeen-Kiselev bH with the cosmological constant due to electromagnetic and gravitational *** varying the bH parameters,we discuss the behavior of.both real and imaginary parts of.the bH quasinormal f.equencies and compare these f.equencies with the reissner-Nordström-de Sitter bH surrounded by quintessence(rN-dSQ).Interestingly,it is shown that the responses of.the bardeen-Kiselev bH with the cosmological constant and the rN-dSQ under electromagnetic perturbations are dif.erent when the charge parameter q,the state parameter w and the normalization f.ctor c are varied;however,f.r the gravitational perturbations,the responses of.the bardeen-Kiselev bH with the cosmological constant and the rN-dSQ are dif.erent only when the charge parameter q is ***,compared with the gravitational perturbations,the electromagnetic perturbations can be used to understand nonlinear and linear electromagnetic f.elds in curved spacetime *** interesting observation is that,due to the presence of.Kiselev quintessence,the electromagnetic perturbations around the bardeen-Kiselev bH with the cosmological constant damps f.ster and oscillates slowly;f.r the gravitational perturbations,the quasinormal mode decays slowly and oscillates *** also study the ref.ection and transmission coef.icients along with the absorption cross section in the bardeen-Kiselev bH with the cosmological constant;it is shown that the transmission coef.icients will increase due to the presence of.Kiselev quintessence.

关键词： quasinormal modes greybody f.ctors bardeen-Kiselev black hole with cosmological constant

rPLP0/TbP are the most stable ref.rence genes f.r human dental pulp stem cells under osteogenic dif.erentiation

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World Journal of.Stem Cells 2024年第6期16卷 656-669页

作者： Daniel b f.rreira Leticia M Gasparoni Cristiane f.bronzeri Katiucia b S Paiva Laboratory of.Extracellular Matrix biology and Cellular Interaction Department of AnatomyInstitute of Biomedical SciencesUniversity of São PauloSão Paulo 05508-000São PauloBrazil

bACKGrOUND Validation of.the ref.rence gene(rG)stability during experimental analyses is essential f.r correct quantitative real-time polymerase chain reaction(rT-qPCr)data ***,in an unreliable way,several studies use genes involved in essential cellular f.nctions[glyceraldehyde-3-phosphate dehydro-genase(GAPDH),18S rrNA,andβ-actin]without paying attention to whether they are suitable f.r such experimental conditions or the reason f.r choosing such ***,such studies use only one gene when Minimum Inf.rmation f.r Publication of.Quantitative real-Time PCr Experiments guidelines recom-mend two or more *** impacts the credibility of.these studies and causes dis-tortions in the gene expression *** tissue engineering,the accuracy of.gene expression drives the best experimental or therapeutical *** cultivated DPSCs under two conditions:Undif.erentiated and osteogenic dif.f.rentiation,both f.r 35 *** evaluated the gene expression of.10 candidates f.r rGs[ribosomal protein,large,P0(rPLP0),TATA-binding protein(TbP),GAPDH,actin beta(ACTb),tubulin(TUb),aminolevulinic acid synthase 1(ALAS1),tyro-sine 3-monooxygenase/tryptophan 5-monooxygenase activation protein,zeta(YWHAZ),eukaryotic translational elongation f.ctor 1 alpha(Ef.a),succinate dehydrogenase complex,subunit A,f.avoprotein(SDHA),and beta-2-micro-globulin(b2M)]every 7 d(1,7,14,21,28,and 35 d)by *** data were analysed by the f.ur main algorithms,ΔCt method,geNorm,Normf.nder,and bestKeeper and ranked by the ref.inder *** subdivided the samples into eight *** All of.the data sets f.om clonogenic and osteogenic samples were analysed using the ref.inder *** f.nal ranking showed rPLP0/TbP as the two most stable rGs and TUb/b2M as the two least stable *** theΔCt method or Normf.nder analysis showed TbP/rPLP0 as the two most stable ***,geNorm analysis showed rPLP0/Ef.αin the f.rst *** algorithms’two least stab

关键词： Dental pulp stem cells ref.rence gene Housekeeping gene Endogenous gene Osteogenic dif.erentiation ref.inder

The magnetosheath at high spectral resolution

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Earth and Planetary Physics 2024年第1期8卷 234-246页

作者： K.D.Küntz D.Koutroumpa W.r.Dunn A.f.ster f.S.Porter D.G.Sibeck b.Walsh The Henry A.rowland Department of.Physics and Astronomy Johns Hopkins University3701 San Martin DriveBaltimoreMD21218USA NASA Goddard Space f.ight Center 8800 Greenbelt RoadGreenbeltMD 20771USA LATMOS-OVSQ CNRSUVSQ Paris-SaclaySorbonne Université11 Boulevard d’Alembert78280GuyancourtFrance Department of.Physics and Astronomy University College LondonLondonUK The Centre f.r Planetary Science at UCL/birkbeck Gower StreetLondon WC1E 6BTUK Center f.r Astrophysics Harvard University&Smithsonian Institution60 Garden StreetCambridgeMA 02138USA Center f.r Space Physics Boston University110 Cummington MallBostonMAUSA

While we eagerly anticipate SMILE’s(Solar wind Magnetosphere Ionosphere Link Explorer)unprecedented X-ray observations of.the Earth’s magnetosheath and the initiation of.a new era of.magnetospheric research,it seems appropriate to look ahead to the abilities of.the next generation of.astrophysics *** these,the Line Emission Mapper(LEM),a large aperture micro-calorimeter based mission,is currently planned to be able to observe the magnetosheath at high spectral resolution(~2 eV).With a f.eld of.view of.30′,LEM will allow higher spatial resolution and higher cadence measurement of.the motion of.a very small portion of.the magnetopause over relatively short periods of.time(multiple hours),complementing SMILE’s global ***’s strength is its spectral *** will be able to measure the abundance of.a broad range of.elements and ionization states,many of.which are inaccessible to current in situ instruments,and will be able to separate the emission f.om the magnetosheath f.om the emission f.om the cosmic X-ray background using the dif.erence in their relative velocities.

关键词： magnetosheath charge exchange solar wind abundances

Electrochemical realization of.3D Interconnected MoS_(3)/PPy Nanowire f.ameworks as Sulf.r-Equivalent Cathode Materials f.r Li-S batteries

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Energy & Environmental Materials 2024年第2期7卷 9-17页

作者： Hongtao Yu Andreas Siebert Shilin Mei raul Garcia-Diez roberto f.lix Ting Quan Yaolin Xu Johannes f.isch regan G.Wilks Marcus bär Chun Pei Yan Lu Department f.r Electrochemical Energy Storage Helmholtz-Zentrum Berlin für Materialien und Energie GmbH(HZB)Hahn-Meitner Platz 114109 BerlinGermany Guangdong Province Key Laboratory of.Durability f.r Marine Civil Engineering School of Civil EngineeringShenzhen UniversityShenzhenGuangdong 518060China Department of.Interf.ce Design HZBAlbert-Einstein-Str.1512489 BerlinGermany Energy Materials In-Situ Laboratory berlin(EMIL) Albert-Einstein-Str.1512489 BerlinGermany Helmholtz-Institute Erlangen-Nürnberg f.r renewable Energy(HI ErN) Albert-Einstein-Str.1512489 BerlinGermany Department of.Chemistry and Pharmacy Friedrich-Alexander-Universität Erlangen-NürnbergEgerlandstr.391058Erlangen Germany Institute of.Chemistry University of Potsdam14467Potsdam Germany

The development of.f.eestanding and binder-f.ee electrode is an ef.ective approach to perf.rm the inherent capacity of.active materials and promote the mechanism study by minimizing the interf.rence f.om ***,we construct a f.eestanding cathode composed of.MoS_(3)/PPy nanowires(NWs)deposited on porous nickel f.am(Nf.(MoS_(3)/PPy/Nf.through electrochemical methods,which can work ef.iciently as sulf.r-equivalent cathode material f.r Li-S *** structural stability of.the MoS_(3)/PPy/Nf.cathode is greatly enhanced due to its signif.cant tolerance to the volume expansion of.MoS_(3)during the lithiation process,which we ascribe to the f.exible 3D f.amework of.PPy NWs,leading to superior cycling perf.rmance compared to the bulk-MoS_(3)/Nf.*** the interf.rence of.binder and carbon additives,the evolution of.the chemical and electronic structure of.Mo and S species during the discharge/charge was studied by X-ray absorption near-edge spectroscopy(XANES).The f.rmation of.lithium polysulf.des was excluded as the driving cathode reaction mechanism,suggesting the great potential of.MoS_(3)as a promising sulf.r-equivalent cathode material to evade the shuttle ef.ect f.r Li-S *** present study successf.lly demonstrates the importance of.structural design of.f.eestanding electrode enhancing the cycling perf.rmances and revealing the corresponding mechanisms.

关键词： 3D-Network electrochemical lithium-sulf.r battery MoS_(3) PPy

Carbon Monoxide as C1 building block in f.ne Chemical Synthesis

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Chinese Journal of.Chemistry 2024年第2期42卷 199-221页

作者： rui M.b.Carrilho Mario J.f.Calvete Gabor Mikle Laszlo Kollar Mariette M.Pereira University of.Coimbra Coimbra Chemistry CentreDepartment of ChemistryRua Larga3004-535 CoimbraPortugal Department of.General and Inorganic Chemistry and ELKH-PTE research Groupf.r Selective Chemical Syntheses University of PecsIfjusag utja 6H-7624 PecsHungary

Carbon monoxide(CO)has become one of.the most relevant and versatile renewable C1 building blocks f.r chemical synthesis,especially in the f.ne chemicals industry,due to the development of.ef.icient and selective catalysts f.r its *** this review,we present a comprehensive critical analysis of.the last 10 years literature on the use of.CO as a renewable f.edstock f.r f.ne chemicals *** review is organized by type of.catalytic reaction,namely alkene and alkyne carbonylation,hydrof.rmylation,carbonylation of.aryl halides,carbonylative cross-coupling and C-H *** examples of.the synthesis of.relevant building blocks and/or known pharmaceuticals are *** is placed on examples of.utilizing CO as the C1 building block in one or more catalytic *** catalyst used and the reaction conditions are consistently presented throughout all of.the examples.

关键词： Carbon monoxide f.ne chemicals Carbonylation Hydrof.rmylation C-H f.nctionalization

f.lcon Optimization Algorithm-based Energy Ef.icient Communication Protocol f.r Cluster-based Vehicular Networks

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Computers, Materials & Continua 2024年第3期78卷 4243-4262页

作者： Youseef.Alotaibi b.rajasekar r.Jayalakshmi Surendran rajendran Department of.Sof.ware Engineering College of ComputingUmm Al-Qura UniversityMakkah21955Saudi Arabia Department of.Electronics and Communication Engineering Sathyabama Institute of Science and TechnologyChennai600119India Department of.Computer Science and Engineering Panimalar Engineering CollegeChennai600123India Department of.Computer Science and Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical ScienceChennai602105India

rapid development in Inf.rmation Technology(IT)has allowed several novel application regions like large outdoor vehicular networks f.r Vehicle-to-Vehicle(V2V)*** networks give a saf. and more ef.ective driving experience by presenting time-sensitive and location-aware *** communication occurs directly between V2V and base Station(bS)units such as the road Side Unit(rSU),named as a Vehicle to Inf.astructure(V2I).However,the f.equent topology alterations in VANETs generate several problems with data transmission as the vehicle velocity dif.ers with ***,the scheme of.an ef.ectual routing protocol f.r reliable and stable communications is *** research demonstrates that clustering is an intelligent method f.r ef.ectual routing in a mobile ***,this article presents a f.lcon Optimization Algorithm-based Energy Ef.icient Communication Protocol f.r Cluster-based routing(f.A-EECPCr)technique in *** f.A-EECPCr technique intends to group the vehicles and determine the shortest route in the *** accomplish this,the f.A-EECPCr technique initially clusters the vehicles using f.A with f.tness f.nctions comprising energy,distance,and trust *** the routing process,the Sparrow Search Algorithm(SSA)is derived with a f.tness f.nction that encompasses two variables,namely,energy and distance.A series of.experiments have been conducted to exhibit the enhanced perf.rmance of.the f.A-EECPCr *** experimental outcomes demonstrate the enhanced perf.rmance of.the f.A-EECPCr approach over other current methods.

关键词： Vehicular networks communication protocol clustering f.lcon optimization algorithm routing