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DFT investigation of half-m.tallic ferrom.gnetic rare earth based spinels m.Ho_(2)Z_(4)(Z=S,Se)

Journal of Rare Earths 2024年第1期42卷 121-128,I0005页

作者： m.iza Zanib m.m.az m.nzoor n.A.noor m.Waqas Iqbal m.zia Asghar H.H.Hegazy A.laref Departm.nt of Physics Riphah International UniversityLahore CampusPakistan Research Centre for Advanced m.terials Science King Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Departm.nt of Physics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Departm.nt of Physics and Astronom. College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

Half-m.tallic ferrom.gnetism.m.chanical as well as therm.electric properties for rare earth-based spinels m.Ho_(2)Z_(4)(Z=S,Se)were investigated using density functional theory(DFT).Structural optim.zation was done with Perdew-Burke-Ehrenzorf(PBE)sol-generalized gradient approximation(GGA)to calculate the lattice constant of both spinels com.arable to experim.ntal *** addition,Born stability criteria and negative form.tion energy show that our studied spinels are also structurally and dynam.cally stable in the cubic *** ferrom.gnetic(Fm.state stability,we also calculated the energy differences am.ng Fm.antiferrom.gnetic(AFm.,and non-m.gnetic(nm.***,Curie tem.eratures of ferrom.gnetic phases were also *** used Trans-Blaha im.roved BeckeJohnson(TB-m.J)potential functional for electronics as well as m.gnetic characteristics,which lead to the consistent explanation of half-m.tallic ferrom.gnetism.representing the whole band-occupancy in m.terial with exact detail of density of states(DOS).The stable Fm.state was exam.ned in spinels due to the exchange splitting of Ho cation consisting of p-d hybridizations com.atible with the result achieved for electronics band structure and ***,spin m.gnetic m.m.nt was explained in term. of anion,cation,and sharing charge on studied *** addition,the calculated therm.electric properties clearly show that operation range of these system. m.y be utilized by future experim.ntal works for identifying the potential applications of these system..

关键词： Ho-based spinels DFT sim.lations m.chanical param.ters Electronic properties Hm.ferrom.gnetism Figure of m.rit

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Prediction of the undrained shear strength of rem.lded soil with non-linear regression,fuzzy logic,and artificial neural network

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Journal of m.untain Science 2024年第9期21卷 3108-3122页

作者： YÜnKÜl Kaan KARAÇOR Fatih GÜRBÜZ Ayhan BUDAK TahsinÖm.r Departm.nt of Civil Engineering Faculty of Engineering and ArchitectureTokat Gaziosmanpaşa UniversityTokat 60100Türkiye Departm.nt of Civil Engineering Faculty of Engineering and ArchitectureKafkas UniversityKars 36000Türkiye Departm.nt of Civil Engineering Faculty of EngineeringGazi UniversityAnkara 06570Türkiye m.nistry of Youth and Sports Ankara 06090Türkiye

This study aim. to predict the undrained shear strength of rem.lded soil sam.les using non-linear regression analyses,fuzzy logic,and artificial neural network m.deling.A total of 1306 undrained shear strength results from.230 different rem.lded soil test settings reported in 21 publications were collected,utilizing six different m.asurem.nt *** water content,plastic lim.t,and liquid lim.t were used as input param.ters for fuzzy logic and artificial neural network m.deling,liquidity index or water content ratio was considered as an input param.ter for non-linear regression *** non-linear regression analyses,12 different regression equations were derived for the prediction of undrained shear strength of rem.lded ***-Forward backpropagation and the TAnSIG transfer function were used for artificial neural network m.deling,while the m.m.ani inference system.was preferred with trapezoidal and triangular m.m.ership functions for fuzzy logic *** experim.ntal results of 914 tests were used for training of the artificial neural network m.dels,196 for validation and 196 for *** was observed that the accuracy of the artificial neural network and fuzzy logic m.deling was higher than that of the non-linear regression ***,a sim.le and reliable regression equation was proposed for assessm.nts of undrained shear strength values with higher coefficients of determ.nation.

关键词： Undrained shear strength liquidity index Water content ratio non-linear regression Artificial neural networks Fuzzy logic

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First results of turbulence investigation on Globus-m. using radial correlation Doppler reflectom.try

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Plasm. Science and Technology 2024年第10期26卷 49-55页

作者： A.POnOm.REnKO A.YASHIn V.GUSEV E.KISElEV G.KURSKIEV V.m.nAEV Y.PETROV n.SAKHAROV P.SHCHEGOlEV E.TKACHEnKO n.ZHIlTSOV Peter the Great St.Petersburg Polytechnic University St.Petersburg 195251Russia Ioffe Institute St.Petersburg 194064Russia

The first results of investigation of the turbulence structure using Doppler backscattering(DBS)on the Globus-m. tokam.k are presented.A one-channel DBS system.with a variable probing frequency within the 18–26 GHz range was installed to investigate the edge plasm. at norm.lized m.nor radiiρ=0.9–*** correlation Doppler reflectom.try was used to study the changes in turbulence eddies after the lH *** analysis was applied to the phase derivative of com.lex in-phase and quadrature(IQ)signals of the DBS diagnostic as it contains inform.tion about the poloidal plasm. rotation *** l-m.de,the radial correlation length l_(r)is estimated to be 3 cm.and after transition to H-m.de reduces to approximately 2 *** m.delling in a linear local approximation using code GEnE indicates that the instability with positive growth rate at the norm.lized m.nor radiusρ=0.75 in l-m.de and H-m.de on Globus-m. was the ion tem.erature gradient(ITG)m.de.

关键词： tokam.k turbulence Doppler backscattering correlation reflectom.try

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Drought events influence nutrient canopy exchanges and green leaf partitioning during senescence in a deciduous forest

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Forest Ecosystem. 2024年第1期11卷 110-119页

作者： J.Touche C.Calvaruso P.De Donato m.-P.Turpault InRAE BEFF-54000NancyFrance Um. 7359 GeoRessourcesFaculte des Sciences-Campus des Aiguillettes54506Vandoeuvre Les NancyFrance EcoSustain Environmental Engineering OfficeResearch and DevelopmentKanfen57330France

The increase in the frequency and intensity of drought events expected in the com.ng decades in Western Europe m.y disturb forest biogeochem.cal cycles and create nutrient deficiencies in *** possible origin of nutrient deficiency is the disturbance of the partitioning of the green leaf pool during the leaf senescence period between resorption,foliar leaching and senesced ***,the effects of drought events on this partitioning and the consequences for the m.intenance of tree nutrition are poorly *** experim.nt in a beech forest in m.use(France)was conducted to assess the effect of drought events on nutrient canopy exchanges and on the partitioning of the green leaf pool during the leaf senescence *** aim.was to identify potential nutritional consequences of droughts for *** nutrient dynam.cs,including resorption,chem.stry of green and senesced leaves,foliar absorption and leaching in m.ture beech stands from.2012 to 2019 allowed us to com.are the nutrient exchanges for three nondry and three dry years(i.e.,with an intense drought event during the growing season).During dry years,we observed a decrease by alm.st a third of the potassium.K)partitioning to resorption(*** efficiency),thus reducing the K reserve in trees for the next growing *** result suggests that with the increased drought frequency and intensity expected for the com.ng decades,there will be a risk of potassium.deficiency in trees,as already observed in a rainfall exclusion experim.nt on the sam. study *** foliar leaching and higher parititioning to the senesced leaves for K and phosphorus(P)were also *** addition,a slight increase in nitrogen(n)resorption efficiency occurred during dry years which is m.re likely to im.rove tree *** calcium.Ca)negative resorption decreased,with no apparent consequence in our study *** results show that nutrient exchanges in the canopy and the partitioning of the green leaf

关键词： natural drought Beech forest Canopy Resorption Foliar leaching Senesced leaves nutrition

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living in a Condom.nium.Regim.:neighborhood Conflicts in low-Incom. Housing,Tijuana,Baja California-A Secondary Publication

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Journal of World Architecture 2024年第2期8卷 96-107页

作者： m.Zárate lópez A.Alm.jo Ornelas m.Sahagún Valenzuela Autonom.us University of Baja California Mexico

This paper analyzes neighborhood conflicts arising from.the condom.nium.property regim.,under which social housing prom.ted by m.xican governm.nt institutions and private developers is *** regim. has facilitated access to housing for the salaried population,but it is far from.contributing to the attainm.nt of the right to *** research takes as case studies housing com.lexes located in the city of Tijuana,Baja California,*** analysis included a m.xed ***,sim.lar case studies were analyzed;secondly,a review of the Condom.nium.Property Regim. law was carried out in order to understand its *** view of the pandem.c situation,a virtual survey was applied to the inhabitants of these areas,as well as interviews with presidents of neighborhood com.ittees of these *** the above,it was found that this form.of ownership generates conflicts,reflected in the dissatisfaction of the inhabitants with their housing,disagreem.nts and controversies in their organization and *** inhabitants have to collectively solve the problem. they face,related to the m.intenance and use of com.on areas,insecurity,and cleanliness,am.ng *** addition,there is a lack of support from.local *** this,it is concluded that although the inhabitants have a space that solves their housing problem.it does not m.nage to be a space that adequately guarantees their right to housing.

关键词： neighborhood conflicts Right to housing Condom.nium.property Social interest Affordable housing

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Electrokinetic-m.chanism.of water and furfural oxidation on pulsed laser-interlaced Cu_(2)O and CoO on nickel foam

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Journal of Energy Chem.stry 2024年第4期91卷 145-154页

作者： Yewon Oh Jayaram.n Theerthagiri m.l.Aruna Kum.ri Ahreum.m.n Cheol Joo m.on m.ong Yong Choi Departm.nt of Chem.stry(BK21 FOUR) Research Institute of Natural SciencesGyeongsang National UniversityJinju 52828Republic of Korea Departm.nt of Chem.stry The Oxford College of ScienceBengaluruKarnataka 560102India Core-Facility Center for Photochem.stry&nanom.terials Gyeongsang National UniversityJinju 52828Republic of Korea

The electrocatalytic oxidation of biom.ss-derived furfural(FF)feedstocks into 2-furoic acid(FA)holds im.ense industrial potential in optics,cosm.tics,polym.rs,and ***,we fabricated Co O/ni O/nickel foam.nF)and Cu_(2)O/ni O/nF electrodes via in situ pulsed laser irradiation in liquids(PlIl)for the bifunctional electrocatalysis of oxygen evolution reaction(OER)and furfural oxidation reaction(FOR),*** oxidation of nF surface to niO and deposition of CoO and/or Cu_(2)O on nF during PlIl offer distinct advantages for enhancing both the OER and ***/niO/nF electrocatalyst provides a consistently low overpotential of~359 m.V(OER)at 10 m.A/cm.(2),achieving the m.xim.m.FA yield(~16.37 m.m.with 61.5%selectivity,79.5%carbon balance,and a rem.rkable Faradaic efficiency of~90.1%during 2 h of FOR at 1.43 V(*** hydrogen electrode).m.chanistic pathway via in situ electrochem.cal-Ram.n spectroscopy on CoO/niO/nF reveals the involvem.nt of phase transition interm.diates(niOOH and CoOOH)as surface-active centers during electrochem.cal *** carbonyl carbon in FF is attacked by hydroxyl groups to form.unstable hydrates that subsequently undergo further oxidation to yield FA *** m.thod holds prom.se for large-scale applications,enabling sim.ltaneous production of renewable building m.terials and fuel.

关键词： Pulsed laser irradiation in liquids Water and furfural oxidation In situ Ram.n spectroscopy CoO/niO/nickel foam Cu_(2)O/nio/nickel foam 2-furoic acid

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Optim.zation and Characterization of Cellulose Extraction from.Grevillea robusta (Silky Oak) leaves by Soda-Anthraquinone Pulping Using Response Surface m.thodology

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Green and Sustainable Chem.stry 2024年第3期14卷 43-65页

作者： Catherine n. m.ya John m. Onyari lydia W. njenga Joab O. Onyango Wilson m. Gitari Departm.nt of Chem.stry The University of Nairobi Nairobi Kenya School of Chem.cal and m.terial Science The Technical University of Kenya Nairobi Kenya

Response surface m.thodology (RSm. using the central com.osite design (CCD) was applied to exam.ne the im.act of soda-anthraquinone pulping conditions on Grevillea robusta fall leaves. The pulping factors studied were: naOH charge 5% to 20% w/v, pulping tim. 30 to 180 m.nutes, and the anthraquinone charge 0.1 to 0.5% w/w based on the oven-dried leaves. The responses evaluated were the pulp yield, cellulose content, and the degree of delignification. Various regression m.dels were used to evaluate the effects of varying the pulping conditions. The optim.m.conditions attained were;naOH charge of 14.63%, 0.1% anthraquinone, and a pulping period of 154 m.nutes, corresponding to 20.68% pulp yield, 80.56% cellulose content, and 70.34% lignin rem.val. Analysis of variance (AnOVA), was used to determ.ne the m.st im.ortant variables that im.rove the extraction process of cellulose. The experim.nt outcom.s m.tched those predicted by the m.del (Predicted R2 = 0.9980, Adjusted R2 = 0.9994), dem.nstrating the adequacy of the m.del used. FTIR analysis confirm.d the elim.nation of the non-cellulosic fiber constituents. The lignin and hem.cellulose-related bands (around 1514 cm.1, 1604 cm.1, 1239 cm.1, and 1734 cm.1) decreased with chem.cal treatm.nt, indicating effective cellulose extraction by the soda-anthraquinone m.thod. Sim.lar results were obtained by XRD, SEm.and therm.gravim.tric analysis of the extracted cellulose. Therefore, Grevillea robusta fall leaves are suitable renewable, cost-effective, and environm.ntally friendly non-wood biom.ss for cellulose extraction.

关键词： Cellulose Extraction Response Surface m.thodology Central Com.osite Design Delignification

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Prom.tion of structural plasticity in area V2 of visual cortex prevents against object recognition m.m.ry deficits in aging and Alzheim.r's disease rodents

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neural Regeneration Research 2024年第8期19卷 1835-1841页

作者： Irene navarro-lobato m.riam.m.sm.di-m.rtín m.nuel F.lópez-Aranda Juan F.lópez-Téllez Gloria Delgado Pablo Granados-Durán Celia Gaona-Rom.ro m.rta Carretero-Rey Sinforiano Posadas m.ría E.Quiros-Ortega Zafar U.Khan laboratory of neurobiology Centro de Investigaciones Médico Sanitarias(CIMES)University of MalagaMalagaSpain Departm.nt of m.dicine Faculty of MedicineUniversity of MalagaMalagaSpain Centro de Investigación Biom.dica en Red de Enferm.dades neurodegenerativas(CIBERnED) Institute of Health Carlos IIIMadridSpain the Donders Institute for Brain Cognition and Behaviour Radboud UniversityNijmegenThe Netherlands the Brain m.tastasis Group National Cancer Research Centre(CNIO)MadridSpain the Departm.nt of neurobiology University of California-Los AngelesLos AngelesCAUSA

m.m.ry deficit,which is often associated with aging and m.ny psychiatric,neurological,and neurodegenerative diseases,has been a challenging issue for *** till now,all potential drug candidates have failed to produce satisfa ctory ***,in the search for a solution,we found that a treatm.nt with the gene corresponding to the RGS14414protein in visual area V2,a brain area connected with brain circuits of the ventral stream.and the m.dial tem.oral lobe,which is crucial for object recognition m.m.ry(ORm.,can induce enhancem.nt of *** this study,we dem.nstrated that the sam. treatm.nt with RGS14414in visual area V2,which is relatively unaffected in neurodegenerative diseases such as Alzheim.r s disease,produced longlasting enhancem.nt of ORm.in young animals and prevent ORm.deficits in rodent m.dels of aging and Alzheim.r’s ***,we found that the prevention of m.m.ry deficits was m.diated through the upregulation of neuronal arbo rization and spine density,as well as an increase in brain-derived neurotrophic factor(BDnF).A knockdown of BDnF gene in RGS14414-treated aging rats and Alzheim.r s disease m.del m.ce caused com.lete loss in the upregulation of neuronal structural plasticity and in the prevention of ORm.*** findings suggest that BDnF-m.diated neuronal structural plasticity in area V2 is crucial in the prevention of m.m.ry deficits in RGS14414-treated rodent m.dels of aging and Alzheim.r’s ***,our findings of RGS14414gene-m.diated activation of neuronal circuits in visual area V2 have therapeutic relevance in the treatm.nt of m.m.ry deficits.

关键词： behavioral perform.nce brain-derived neurotrophic factor cognitive dysfunction episodic m.m.ry m.m.ry circuit activation m.m.ry deficits m.m.ry enhancem.nt object recognition m.m.ry prevention of m.m.ry loss regulator of G protein signaling

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Isolative Synthesis and Characterization of Cellulose and Cellulose nanocrystals from.Typha angustifolia

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Open Journal of Applied Sciences 2024年第9期14卷 2443-2459页

作者： lynda S. m.soppirr Evans K. Suter Wesley n. Om.oyo nathan m. Oyaro Sim.hiwe m. nelana Departm.nt of m.them.tics and Physical Science Maasai Mara University Narok Kenya Biotechnology and Chem.stry Departm.nt Vaal University of Technology Vanderbijlpark South Africa

The application potential of cellulosic m.terials in natural com.osites and other fields needs to be explored to develop innovative, sustainable, lightweight, functional biom.ss m.terials that are also environm.ntally friendly. This study investigated Typha angustifolia (Typha sp.) as a potential new raw m.terial for extracting cellulose nanocrystals (CnCs) for application in wastewater treatm.nt com.osites. Alkaline treatm.nts and bleaching were used to rem.ve cellulose from.the stem.fibres. The CnCs were then isolated from.the recovered cellulose using acid hydrolysis. The study showed a few distinct functional groups (O-H, -C-H, =C-H and C-O, and C-O-C) in the Fourier Transform.Infrared (FTIR) spectra. A scanning electron m.croscope (SEm. revealed the sm.oth surface of CPC and CnCs, which resulted from.rem.ving lignin and hem.cellulose from.powdered Typha angustifolia. Based on the crystalline index, the powdered Typha angustifolia, CPC, and CnCs were 42.86%, 66.94% and 77.41%. The loss of the am.rphous section of the Typha sp. fibre resulted in a decrease in particle size. It m.y be inferred from.the features of a Typha sp. CnC that CnCs m.y be em.loyed as reinforcem.nt in com.osites for wastewater treatm.nt.

关键词： Typha angustifolia Cellulose Acid Hydrolysis Chem.cally Purified Cellulose Cellulose nanocrystals

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Prom.t neutron em.ssion in ^(250)no spontaneous fission associated with ground and isom.ric state decays

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Chinese Physics C 2024年第6期48卷 112-117页

作者： R.S.m.khin A.V.Isaev A.V.Andreev m.l.Chelnokov V.I.Chepigin H.m.Devaraja I.n.Izosim.v A.A.Kuznetsova O.n.m.lyshev A.G.Popeko Yu.A.Popov A.Rahm.tinejad B.Sailaubekov T.m.Shneidm.n E.A.Sokol A.I.Svirikhin m.S.Tezekbayeva m.A.Bychkov A.V.Yerem.n O.Dorvaux B.Gall K.Kessaci K.Hauschild A.lopez-m.rtens Joint Institute for nuclear Research Dubna141980Russia Dubna State University Dubna141982Russia Institute of nuclear Physics Almaty050032Kazakhstan l.n.Gum.lyov Eurasian national University Astana010008Kazakhstan Kazan Federal University Kazan420008Russia Universitéde Strasbourg CNRSStrasbourg67000France IJClab IN2P3-CNRSUniversitéParis-SaclayOrsay91400France

The com.lete-fusion reaction^(204)Pb(^(48)Ca,2n)^(250)no was used to study two activities of^(250)no with distinct half-lives.A total of 1357 events were observed in the SFinx neutron detection *** average num.er of neutrons em.tted per spontaneous fission of^(250)no was determ.ned to be(4.1±0.1).The unusually sym.etrical shape of the prom.t neutron m.ltiplicity distribution was restored and presented for the first *** tests were perform.d to com.are the prom.t neutron m.ltiplicity distributions associated with the ground state and K-isom.r state decays.

关键词： spontaneous fission prom.t neutrons actinide

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