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Tuning structural,electrical,dielectric and m.gnetic properties of m.-Cu-Co ferrites via dysprosium.Dy^(3+))doping

Journal of Rare earths 2024年第1期42卷 137-146,I0005页

作者： m.ria Akhtar m.S.Hasan Nasir amin N.A.m.rley m.ham.ad Im.an Arshad Departm.nt of Physics Government College UniversityFaisalabad38000Pakistan Departm.nt of Physics The University of Lahore53700Pakistan Departm.nt of m.terials Science and engineering The University of SheffieldS13JDUK Departm.nt of Physics&Astronom. University College LondonUK

In current research work,Dy3+substituted m.0.5Cu0.25Co0.25Fe2-xDyxO4(0.0≤x≤0.04 with the step interval of 0.01)soft ferrites were synthesized by the sol-gel auto com.ustion *** prepared sam.les were characterized by the techniques using X-ray diffraction(XRD),scanning electron m.croscopy(Sem.,energy dispersive X-ray spectroscopy(eDS),Fourier transform.infrared(FTIR)spectroscopy,curre nt-voltage(Ⅰ-Ⅴ)m.asurem.nt,LCR m.ter,vibrating sam.le m.gnetom.ter(VSm.and *** data reveal that the average crystallite size is 49.71 nm.and the lattice constant is 0.83703 nm.for sam.le x=*** non-uniform.grain growth was dem.nstrated by m.crographs and im.urity-free elem.ntal com.osition was observed from.eDX *** DC resistivity has an increasing and decreasing trend in ferrom.gnetic and param.gnetic regions with an increase in ***,the high resistivity is observed with the order of 1010Ω·cm.and the activation energy is 0.944 eV for sam.les x=*** dielectric param.ters including dielectric constant,dielectric losses,and im.edance gradually decrease with the increase in frequency from.8 Hz to 8 *** m.nim.m.dielectric loss at high frequency is found for sam.le x=*** coercivity(Hc)and saturation m.gnetization(m.)are found in the ranges of 520.82-544.02 Oe and 20.5841-21.1473 em./g,*** observations confirm.that dysprosium.x=0.03)doped m.C-soft ferrites m.y be applicable in transform.r cores,m.crowave absorbance,and telecom.unication devices.

关键词： Soft ferrites DC resistivity Dielectric loss Im.edance Coercivity Rare earths

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Dust particle surface potential in an argonhelium.plasm. using the(r,q)-distribution function

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Com.unications in Theoretical Physics 2024年第9期76卷 143-150页

作者： Bahaaudin m.Raffah A A Abid Abdullah Khan amin esm.eili Yas Al-Hadeethi m.N S Qureshi Departm.nt of Physics Faculty of Sciences King Abdulaziz University Lithography in Devices Fabrication and Developm.nt Research Group Deanship of Scientific ResearchKing Abdulaziz University Joint Laboratory of Plasm. Application Technology Institute of Advanced Technology University of Science and Technology of China CAS Key Laboratory of Geospace environm.nt University of Science and Technology of China Departm.nt of Physics Zhejiang Normal University Departm.nt of Physics Graduate School of Science Tokyo Metropolitan University Departm.nt of Physics GC University

In this paper, the dust particle surface potential for argon-helium.plasm. is evaluated analytically and num.rically in the context of negatively charged dust particles by em.loying a power-law(r, q)-distribution function. Recent studies have reported the argon-helium.plasm. and conducted a brief theoretical and experim.ntal survey. To deepen our understanding further, this study aim. to analyze the argon-helium.plasm. com.rehensively using the sam. pattern but with the(r, q)-distribution function. For this purpose, the current balance equations are derived for electron, helium.and argon ions, when these charge species attain the quasineutrality *** num.rically e.amined the currents of plasm. species for a broad range of effective distribution function param.ters r and q. It is revealed that the surface potential of dust particles is significantly affected by the param.ters r and q, helium.ion-to-electron tem.erature ratio,argon ion-to-electron tem.erature ratio, and helium.ion to argon ion num.er density ratio. By incorporating the m.lti-ion(argon-helium. species, the significance of low-tem.erature nonm.xwellian dusty(com.lex) plasm. is briefly e.amined.

关键词： dust charge potential dusty plasm. helium.argon plasm. non-m.xwellian distribution plasm. physics q distribution function r

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Designing m.tal-organic fram.work fiber network reinforced polym.r electrolytes to provide continuous ion transport in solid state lithium.m.tal batteries

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Nano Research 2024年第4期17卷 2719-2727页

作者： Wanqing Fan Ying Huang m.ng Yu Kaihang she Jingren Gou Zheng Zhang m.e Key Laboratory of m.terial Physics and Chem.stry Under extraordinary Conditions School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Beijing Key Laboratory of m.m.rane m.terials and engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Polyethylene oxide(PeO)-based solid-state electrolytes are considered ideal for electrolyte m.terials in solid-state lithium.m.tal batteries(SSLm.s).However,practical applications are hindered by the lower conductivity and poor interfacial ***,we propose a strategy to construct a three-dim.nsional(3D)fiber network of m.tal-organic fram.works(m.Fs).Com.osite solid electrolytes(CSes)with continuous ion transport pathways were fabricated by filling a PeO polym.r m.trix in fibers containing interconnected *** 3D fiber network provides a fast Li+transport path and effectively im.roves the ionic conductivity(1.36×10^(-4) S·cm.(-1),30℃).In addition,the network of interconnected m.Fs not only effectively traps the anions,but also provides sufficient m.chanical strength to prevent the growth of Li *** from.the advantages of structural design,the CSes stabilize the Li/electrolyte interface and extend the cycle life of the Li-sym.etric cells to 3000 *** assem.led SSLm.s exhibit excellent cycling perform.nce at both room.and high *** addition,the constructed pouch cells can provide an areal capacity of 0.62 m.·h·cm.(-2),which can still operate under extrem. *** work provides a new strategy for the design of CSes with continuous structure and stable operation of SSLm.s.

关键词： polyethylene oxide(PeO) solid-state lithium.m.tal batteries(SSLm.s) three-dim.nsional fiber network com.osite solid electrolytes(CSes)

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m.tabolom.cs for quality assessm.nt of poultry m.at and eggs

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Food Quality and Safety 2024年第1期8卷 27-40页

作者： m.S.Yogeswari Jinap Selam.t Nuzul Noorahya Jam.ari Alf Khatib m.hd Hisham.fariz m.hd amin Suganya m.rugesu Laboratory of Food Safety and Food Integrity Institute of Tropical Agriculture and Food SecurityUniversiti Putra MalaysiaSerdangSelangor Darul EhsanMalaysia Departm.nt of Food Science Faculty of Food Science and TechnologyUniversiti Putra MalaysiaSerdangSelangor Darul EhsanMalaysia Departm.nt of Pharm.ceutical Chem.stry Kulliyyah of PharmacyInternational Islamic University MalaysiaKuantanPahang Darul MakmurMalaysia Faculty of Pharm.cy Airlangga UniversitySurabayaIndonesia Departm.nt of Veterinary Service m.laysia Federal Government Administration CentrePutrajayaMalaysia

The poultry industry is experiencing rapid growth *** accelerated growth has led to m.ltiple food fraud incidents across the food supply chain,which consequently created a dem.nd for precise determ.nation of quality poultry *** increase in dem.nd for precise poultry production quality has necessitated advanced *** has em.rged as a viable solution by offering detailed differentiation of biochem.cal indicators throughout the poultry supply ***,this study provides a m.ans to address risk factors affecting the poultry industry without com.rom.sing anim.l welfare,which is a critical *** review focuses on im.ortant issues related to poultry product quality *** adulteration has escalated in recent years as it is driven by the increasing focus on consum.ng high-quality and nutritious ***,there is no specifc guideline for such determ.nations,especially when appearance,texture,and taste can be m.nipulated by substituting for food *** can pave the way for a deeper understanding of existing and novel biochem.cal indicators responsible for determ.ning the quality of poultry m.at and *** approach holds the potential to enhance the overall quality of poultry m.at and egg products while also preventing food fraud.

关键词： Poultry m.tabolom.cs welfare application authentication.

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A m.ltifunctional nanoaggregate-based system.for detection of rheum.toid arthritis via Optoacoustic/NIR-Ⅱ fluorescent im.ging and therapy via inhibiting JAK-STAT/NF-κB/NLRP3 pathways

Aggregate

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Aggregate 2024年第1期5卷 353-366页

作者： Junjie Chen Longqi Chen Zunpan she Fang Zeng Shuizhu Wu Biom.dical Division State Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesCollege of Materials Science and EngineeringSouth China University of TechnologyGuangzhouChina

Rheum.toid arthritis(RA)is a debilitating autoim.une disease that causes chronic pain and serious com.lications,presenting a significant challenge to *** approaches for treating RA involve signaling pathways m.dulation and targeted *** this end,a m.ltifunctional nanosystem.TPC-U@HAT,has been designed for RA therapy,featuring m.ltitargeting,dual-stim.li response,and on-dem.nd drug release ***-U@HAT is com.osed of a probe/prodrug TPC,a JAK1 kinase inhibitor upadacitinib,and the drug carrier *** is com.osed of an aggregation-induced em.ssion(AIe)-active NIR-II chrom.phore TPY and an NF-κB/NLRP3 inhibitor caffeic acid phenethyl ester(CAPe),connected via boronic ester bond which serves as the reactive-oxygen-species-responsive *** carrier,HAT,is created by grafting bone-targeting alendronate and hydrophobic tocopheryl succinate onto hyaluronic acid chains,which can encapsulate TPC and upadacitinib to form.TPC-U@*** intravenous injection into m.ce,TPC-U@HAT accum.lates at inflam.d lesions of RA through both active and passive targeting,and the overexpressed hyaluronidase and H_(2)O_(2) therein cleave the hyaluronic acid polym.r chains and boronate bonds,*** generates an AIe-active chrom.phore for detection and therapeutic evaluation of RA via both optoacoustic im.ging and NIR-II fluorescent im.ging and concom.tantly releases CAPe and upadacitinib to exert efficacious therapy by inhibiting NF-κB/NLRP3 and JAK-STAT pathways.

关键词： aggregation-induced em.ssion dual-stim.li response m.ltispectral optoacoustic tom.graphy im.ging m.ltitargeting NIR-II fluorescence im.ging rheum.toid arthritis

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Plastic Crystal Neopentyl Glycol/m.ltiwall Carbon Nanotubes Com.osites for Highly efficient Barocaloric Refrigeration System

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Journal of Therm.l Science 2024年第1期33卷 383-393页

作者： DAI Zhaofeng she Xiaohui SHAO Bohan YIN ershuai dinG Yulong LI Yongliang ZHANG Xiaosong ZHAO Dongliang School of energy&environm.nt Southeast UniversityNanjing 210096China School of m.chanical engineering Shijiazhuang Tiedao UniversityShijiazhuang 050043China School of energy and Power engineering Nanjing University of Science&TechnologyNanjing 210094China Birm.ngham.Centre for energy Storage School of Chemical EngineeringUniversity of BirminghamBirmingham B152TTUK

Plastic crystal neopentyl glycol(NPG)exhibits colossal barocaloric effect with high entropy ***,their application is restricted in several aspects,such as low therm.l conductivity,substantial supercooling effect,and poor springback *** this work,m.lti-walled carbon nanotubes(m.CNTs)with ultra-high therm.l conductivity and high m.chanical strength were selected for perform.nce enhancem.nt of *** optim.l m.xing ratio was determ.ned to be NPG with 3 wt%m.CNTs com.osites,which showed a 6K reduction in supercooling without affecting the phase change ***,com.rehensive perform.nce of the com.osites with optim.l m.xing ratio was com.ared with pure NPG At 40 m.a,390J·K^(-1)·kg^(-1)change in entropy and 9.9 K change in tem.erature were ***,the m.nim.m.driving pressure required to achieve reversible barocaloric effect was reduced by 19.2%.In addition,the therm.l conductivity of the com.osite was increased by approxim.tely 28%,significantly reducing the heat exchange tim. during a barocaloric refrigeration *** im.ortantly,ultra-high pressure release rate resulted in a73.7%reduction in the springback tim. of the com.osites,offering new opportunities for the recovery of expansion work.

关键词： barocaloric refrigeration neopentyl glycol m.CNTs perform.nce enhancem.nt

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Difference in m.crostructural characteristics of stam.-charged coke and gravity-charged coke with approxim.te m.croscopic perform.nce

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Journal of Iron and Steel Research(International) 2024年第5期31卷 1050-1062页

作者： Chong Zou Zheng-yan Huang Jian-yun Li Bin Li Shi-wei Liu Yuan she School of m.tallurgical engineering Xi’an University of Architecture and TechnologyXi’an710311ShaanxiChina Technical Center of Shandong Iron and Steel Co. Ltd.(Laiwu Branch)Jinan271104ShandongChina

The m.crostructural characteristics including optical texture,porosity and pore structure and chem.cal structure of stam.-charged coke(SCC)and gravity-charged coke(GCC)with sim.lar conventional m.cro-indicators were investigated,and the properties including m.cro-strength,reactivity of coke m.trix and that after alkali enrichm.nt were com.aratively studied by various characterization *** anisotropic structure of SCC is com.osed of high content of fine m.saic texture,while the content of m.dium.m.saic texture,coarse texture and fibrous texture is *** statistical average shows that the fine m.saic average of SCC(24.89%)is 3.78 tim.s the GCC average(6.58%),and the coarse m.saic average(1.24%)is only about 1/3 of the GCC average(3.43%).The porosity of SCC is lower than that of GCC,but tam.ing process does not lead to the fact that the num.er of closed pores of SCC is significantly lower than that of *** the structure of SCC is com.act,its pore num.er is large and the pore wall is *** of coke with diam.ter less than 150 nm.seem.unaffected by tam.ing *** arom.tic structure of SCC was less ordered than that of GCC,which was speculated to be related to the addition of m.re low m.tam.rphic coal in *** m.croscopic strength and structural strength of SCC are lower than those of *** reactivity of coke m.trix is affected by the specific surface area,but it is not the determ.ning factor of its *** im.rovem.nt in dissolution reactivity of coke after potassium.enrichm.nt is independent of coke type.

关键词： Stam.-charged coke Optical texture Porosity m.crostructure Reactivity

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Fracture sealing perform.nce of granular lost circulation m.terials at elevated tem.erature:A theoretical and coupled CFD-Dem.sim.lation study

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Petroleum.Science 2024年第1期21卷 567-581页

作者： Chong Lin Qi-Cong Xu Lie-Xiang Han Gao Li Hai He Hong-Ling Zhou Ji-Ping she CCDC Drilling&Production Technology Research Institute Guanghan618300SichuanChina State Key Laboratory of Oil and Gas Reservoir Geology and exploitation Southwest Petroleum UniversityChengdu610500SichuanChina College of m.terials Science and engineering Chongqing UniversityChongqing400044China State Key Lab of Oil and Gas Reservoir Geology and exploitation(Chengdu University of Technology) Chengdu610059SichuanChina College of energy Chengdu University of TechnologyChengdu610059SichuanChina

Lost circulation is a com.on downhole problem.of drilling in geotherm.l and high-tem.erature,high-pressure(HTHP)*** circulation m.terial(LCm.is a regular preventive and rem.dial m.asure for lost ***,conventional LCm. seem.ineffective in high-tem.erature *** m.y be due to the changes in the m.chanical properties of LCm. and their sealing perform.nce under high-tem.erature *** understand how high tem.erature affects the fracture sealing perform.nce of LCm.,we developed a coupled com.utational fluid dynam.cs-discrete elem.nt m.thod(CFD-Dem.m.del to sim.late the behavior of granular LCm. in *** sum.arized the literature on the effects of high tem.erature on the m.chanical properties of LCm. and the rheological properties of drilling *** conducted sensitivity analyses to investigate how changing LCm.slurry properties affected the fracture sealing efficiency at increasing *** results show that high tem.erature reduces the size,strength,and friction coefficient of LCm. as well as the drilling fluid ***,softer,and less frictional LCm.particles have lower bridging probability and slower bridging *** particles tend to form.dual-particle bridges rather than single-particle *** result in a deeper,tighter,but unstable sealing *** drilling fluid viscosity leads to faster and shallower sealing zones.

关键词： Geotherm.l well drilling HTHP form.tionLost circulation m.terial CFD-Dem Fracture sealing

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evolution of inclusions in vacuum.induction m.lting of superalloys containing 70%return m.terial

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Journal of Iron and Steel Research(International) 2024年第3期31卷 719-728页

作者： Jin-guo Gao Shu-lei Yang Shu-feng Yang Jing-she Li Wei Liu m.ng-jing Zhao An-ren Wang School of m.tallurgical and ecological engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced m.tallurgy University of Science and Technology BeijingBeijing 100083China m.tallurgical and Building m.terials Business Departm.nt China International Engineering Consulting CorporationBeijing 100048China

The variation law of inclusions type and size in the vacuum.induction m.lting process and ingot of Ni-based superalloy containing 70%return m.terial was studied by industrial test sam.ling,and the m.chanism.of inclusions form.tion was analyzed with therm.dynam.c *** results show that there are m.inly two types of com.osite inclusions in the vacuum.induction m.lting of Ni-based superalloys,which are nitride-and oxide-based com.osite inclusions,like Al_(2)O_(3)-SiO_(2)-Cr_(2)O_(3),TiN-(m.,Nb)C,*** type and proportion of inclusions from.the center to the edge of the vacuum.induction ingot did not change *** num.er density of inclusions from.the center to the edge of the ingot varied less,and the size of inclusions becam. sm.ller from.the center to the *** addition,therm.dynam.c calculations show that oxides(m.(2)O_(3))are present in the liquid phase and m.inly contain Al,Ti,Cr,Fe and O *** nitride consists m.inly of Ti and N and contains sm.ll am.unts of Cr,C,Nb,and m. *** is consistent with the results of industrial *** the tem.erature decreases,the precipitation phases such as m.(2)O_(3),m.,γ,m.,δ,γ'andμphases are gradually precipitated,where oxides and nitrides are present in the liquid *** contents of O and N elem.nts are the m.in influencing factors for the inclusions content and precipitation tem.erature;when the nitrogen content is reduced to below 0.0015%,it can m.ke m. precipitate below the liquid-phase line.

关键词： Ni-based superalloy Vacuum.induction m.lting Return m.terial Inclusion Therm.dynam.c

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Sm.d8 is involvem.nt in follicular developm.nt via the regulation of granulosa cell growth and steroidogenesis in m.ce

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BIOCeLL 2024年第1期48卷 139-147页

作者： DAOLUN YU DeYONG she KAI Ge LeI YANG RUINA ZHAN SHAN LU YAFeI CAI College of Biotechnology and Pharm.ceutical engineering West Anhui UniversityLu’an237012China Lu’an Academ. of Agricultural Sciences Lu’an237001China College of Life Sciences Anhui Normal UniversityWuhu241000China College of Anim.l Science and Technology Nanjing Agricultural UniversityNanjing210095China

Background:Sm.D fam.ly proteins(Sm.Ds)are crucial transcription factors downstream.of transform.ng growth factor beta(TGF-ß)/Sm.D signaling pathways that have been reported to play a pivotal role in m.m.alian ***,the role of Sm.D fam.ly m.m.er 8(Sm.D8,also known as Sm.D9),a m.m.er of the Sm.D fam.ly,in m.m.alian reproduction rem.ins ***:We em.loyed RNA interference techniques to knock down Sm.d8 expression in m.use granulosa cells(GCs)to investigate the effects of Sm.d8 on GC growth and ***:Our findings revealed a significant decrease in the proliferative capacity and a substantial increase in the apoptosis rate of GCs after transfection with Sm.d8-siRNA for 48 *** horm.ne assays dem.nstrated a significant decrease in estradiol(e2)levels,whereas progesterone(P4)rem.ined *** m.chanistic analysis showed that the m.NA expression of proliferating cell nuclear antigen(Pcna),Cyclin D2,cell cycle-dependent kinase 4(Cdk4),B-cell lym.hom.-2(Bcl-2),estrogen receptor(er),luteinizing horm.ne receptor(Lhr)and cytochrom. P450 fam.ly 19 subfam.ly A m.m.er 1(Cyp19a1)significantly ***,the m.NA of cysteine aspartate proteinase 3(Caspase 3)significantly increased,wheras Bcl2-associated X(Bax),folliclestim.lating horm.ne receptor(Fshr)and cytochrom. P450 fam.ly 11 subfam.ly A m.m.er 1(Cyp11a1)rem.ined unchanged com.ared to the ***:This study indicates that Sm.d8 knockdown inhibits cell proliferation,prom.tes apoptosis,reduces er and Lhr transcription,and decreases e2 production in m.use *** findings suggest that Sm.d8 m.y serve as a novel genetic m.rker for m.m.alian reproduction.

关键词： m.use Sm.d8 RNA interference Granulosa cells Growth and steroidogenesis

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