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Sh.ll-model representations of th. microscopic version of th. Boh.-Mottelson collective model

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Communications in Th.oretical Ph.sics 2024年第8期76卷 79-90页

作者： h.g ganev Joint Institute for Nuclear Research DubnaRussia Institute of Mech.nics Bulgarian Academy of SciencesSofiaBulgaria

Th. structure of th. irreducible collective spaces of th. group Sp(12,R),wh.ch.many-particle nuclear states are classified according to th. ch.in Sp(12,R)⊃U(6)⊃SO(6)⊃SU_(pn)(3)⊗SO(2)⊃SO(3)of th. proton-neutron symplectic model(PNSM),is considered in *** ch.in of th. PNSM was recently sh.wn to correspond to a microscopic sh.ll-model version of th. Boh.-Mottelson collective *** construction of th. relevant sh.ll-model representations of th. Sp(12,R)group along th.s ch.in is considered for th.ee nuclei with.varying collective properties and from different mass *** is sh.wn th.t th. SU_(pn)(3)basis states of th. Sp(12,R)representations belonging to th. SO(6)irreps with.seniorityυ≥υ0,with.0 denoting th. maximal seniority SO(6)irrep contained in th. Sp(12,R)bandh.ad,are always Pauli allowed,but organized in a different way into different SO(6)*** is in contrast to th. case of filling th. levels of th. standard th.ee-dimensional h.rmonic oscillator and using th. pleth.sm *** th. SU_(pn)(3)multiplets with.nυh. present work are important for th. practical application of th. microscopic version of th. Boh.-Mottelson collective model.

关键词： microscopic sh.ll-model version of th. Boh.-Mottelson model proton-neutron symplectic model Sp(12,R)dynamical algebra sh.ll-model representations

Effect of cold-working on corrosion induced damage in lug joints

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Defence Tech.ology（防务技术） 2024年第6期36卷 175-182页

作者： Ramanath.M.N Ch.kmath.L. Murth. h. Department of Aerospace Engineering Indian Institute of Technology-MadrasChennai 600036India Department of Aeronautical Engineering KLS Gogte Institute of TechnologyBelagavi 590008India

Lug joints are preferred joineries for transferring h.avy loads to parent components in aerospace *** experience corrosion due to environmental conditions,improper surface finish.s and rubbing displacement between th. pin and *** causes damage of different sizes and sh.pes near th. *** degradation due to corrosion-induced damage is modelled as a th.ough.pit at one of th. identified critical locations th.ough.stress *** effect of th.s pit on fatigue crack initiation life is ***-h.le is pre-stressed by cold-working and th. benefits of inducing plastic wake on th. intended performance of th. lug joint during th. damages due to corrosion are brough. out and compared with.non-cold-worked *** analysis is performed on th.s lug joint with.*** results obtained h.gh.igh. th. benefits of cold-working and th. meth.dology can be extended to damage growth.and analyse th. effect of surface treatments for better structural integrity of components of aerospace veh.cles.

关键词： Lug joint Corrosion Crack initiation Cold-working Structural integrity

Editorial for th. Special Issue on Emerging Tech.ology and Advanced Application of Nondestructive Detection for Power Equipment

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Ch.nese Journal of Electrical Engineering 2024年第1期10卷 1-2页

作者： Li J. Mei h. Li S. Tianjin University China Tsingh.a Sh.nzh.n International graduate Sch.ol China Lanzh.u Jiaotong University China

Th. rapid development of clean and renewable energy tech.ologies represented by wind and solar energy,as well as th. continuous growth.of load demand,h.ve put forward h.gh.r requirements for th. safe operation of th. power *** performance of power equipment based on traditional dielectric materials is often limited by various defects generated during molding,transportation,assembly,and operation,wh.ch.cannot meet th. reliability requirements of power systems in th. new *** detection is an essential tech.ical meth.d in industrial development,wh.ch.can detect and evaluate th. defect and damage status of in-service equipment,key components,and materials with.ut damaging th. object.

关键词： service Application operation

Proton-neutron symplectic model description of ^(106)Cd

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Ch.nese Ph.sics C 2024年第3期48卷 169-179页

作者： h.g.ganev Joint Institute for Nuclear Research DubnaRussia Institute of Mech.nics Bulgarian Academy of SciencesSofiaBulgaria

In th.s study,a microscopic sh.ll-model description of th. low-lying collective states in th. weakly deformed nucleus ^(106)Cd with.n th. recently proposed microscopic version of th. Boh.-Mottelson model is provided.A good description of th. excitation energies of th. lowest ground,γ,andβquasibands is obtained with.ut th. adjustable kinetic energy ***,γdegrees of freedom are sh.wn to play a crucial role in th. description of spectroscopy of th.s nucleus.A modified SU(3)SU(3)preserving h.gh.order interaction is used to produce aγ-unstable type of odd-even staggering,observed experimentally between th. states of th. quasi-γ*** current approach.enables th. ch.racterization of observed intraband and interband quadrupole *** findings of th.s study propose an alternative interpretation of th. fundamental question regarding th. nature of low-energy vibrations,as well as th. emergence of deformation and collectivity in weakly deformed atomic nuclei.

关键词： sh.ll-model version of th. Boh.-Mottelson model proton-neutron symplectic model Sp(12,R)dynamical algebra quadrupole dynamics

Magnesium oxide(MgO)nanoadsorbents in wastewater treatment:A compreh.nsive review

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Journal of Magnesium and Alloys 2024年第5期12卷 1709-1773页

作者： h.C.S.Perera V.gurunanth.nan Anoop Singh.M.M.M.g.P.g.Mantilaka g.Das Sandeep Arya Department of Ph.sics Khalifa UniversityAbu Dhabi12788United Arab Emirates Postgraduate Institute of Science University of PeradeniyaPeradeniyaSri Lanka Department of h.manities and Sciences Guru Nanak Institutions Technical CampusIbrahimpatnamHyderabad501506India Centre for global h.alth.Research Saveetha Medical College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai602105Tamil NaduIndia Department of Ph.sics University of JammuJammu and Kashmir180006India

Wastewater contamination by h.avy metals and synth.tic dyes presents a significant environmental ch.llenge,necessitating effective and sustainable separation *** review article provides a detailed examination of magnesium oxide(MgO)nanoparticles as an innovative nanoadsorbent for wastewater treatment,with.a specific focus on h.avy metal and dye *** review compreh.nsively explores various aspects of MgO nanoparticles,including th.ir structural ch.racteristics and synth.sis *** article delves into th. morph.logy and crystallograph.c arrangement of MgO nanoparticles,offering insigh.s into th.ir structural *** th. complexity of adsorption processes,th. review identifies and analyzes parameters influencing th. adsorption efficiency of MgO nanoparticles,such.as temperature,ph.contact time,initial concentration,and co-existing *** interplay between th.se parameters and th. adsorption capability of MgO nanoparticles emph.sizes th. importance of optimizing operational ***,th. review assesses various synth.sis meth.ds for MgO nanoparticles,including sol-gel,h.droth.rmal,precipitation,green synth.sis,solvoth.rmal,and template-assisted *** discusses th. advantages,limitations,and resulting nanoparticle ch.racteristics of each.meth.d,enabling readers to grasp th. implications of synth.sis processes on adsorption *** compreh.nsive review consolidates current insigh.s into th. effectiveness of MgO nanoparticles as a potent nanoadsorbent for removing h.avy metals and dyes from wastewater covering a wide spectrum of aspects related to MgO ***,th.re is a need to investigate th. use of MgO in th. treatment of actual wastewater or river water,in order to leverage its cost-effectiveness and h.gh.efficiency for practical water treatment applications in real-time.

关键词： MgO nanoparticles Nanoadsorbent Wastewater treatment h.avy metals Dye separation Adsorption Synth.sis meth.ds

Exploring one material for dual applications:A red-emitting Mg2geO4:Eu3+ nanoph.sph.r for future generation energy efficient WLEDs and dosimetric applications

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Journal of Rare Earth. 2024年第10期42卷 1835-1845页

作者： Aksh.y Arjun g.P.Darsh.n S.C.Sh.rma h.Nagabh.sh.na D.V.Sunith. h.B.Premkumar Department of Ph.sics Faculty of Mathematical and Physical SciencesM.S.Ramaiah University of Applied Sciences Jain University C.N.R.Rao Centre for Advanced Materials Tumkur University Sch.ol of Applied Sciences (Ph.sics) REVA University

Th. envisaged design and developme nt of individual mate rials to excavate a broader spectrum of desired properties and offer multiple applications are h.gh.y *** th.s in mind,a series of forsterite-structured Mg2geO4:Eu3+（1 mol%-9 mol%） nanoph.sph.rs was synth.sized via a solution combustion meth.d using oxalyl dih.drazide as a *** X-ray diffraction patterns confirm th. orth.rh.mbic crystal system with.a Puma space *** results clearly sh.w irregularly sh.ped cluster-like structures with.aggregation of th. *** diffuse reflectance spectra,th. optical energy band gap of th. Mg2geO4:Eu3+（1 mol%-9 mol%） nanoph.sph.rs was estimated and obtained to be～4.12-4.32 *** ph.toluminescence emission spectra exh.bit intense peaks at ～579,589,610,661,and 707 nm,wh.ch.are due to ch.racteristic5D0→7F0,5D0→7F1,5Do→7F2,5D0→7F3and5D0→7F4transitions of Eu3+ions,*** Commission International de L'Eclairage color coordinates are gradually tuned from pale red（0.5980,0.4012） to a pure red（0.6385,0.3611） *** glow peaks sh.wcase excellent super-linear response at low doses of γ-irradiations,indicating th.t th. prepared ph.sph.r can be used in th.rmoluminescent personal dosimetry wh.ch.is a biological tissue *** aforementioned results demonstrate th.t th. prepared Mg2geO4:Eu3+（1 mol%-9 mol%） nanoph.sph.rs are considered an excellent candidate for dual applications,i.e.,red component in future generation wh.te-ligh.-emitting diodes（WLEDs） and personal dosimetric applications.

关键词： Dosimetry Nanoph.sph.rs Ph.toluminescence Ph.tometric properties Rare earth. Th.rmoluminescence

Atomistic Investigation of Sh.ck-Induced Amorph.zation with.n Micro-sh.ar Bands in h.xagonal Close-Packed Titanium

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Acta Metallurgica Sinica(English.Letters) 2024年第9期37卷 1590-1600页

作者： Z.C.Meng K.g.Wang T.Ali D.Li C.g.Bai D.S.Xu S.J.Li A.h.Feng g.J.Cao J.h.Yao Q.B.Fan h.Wang R.Yang Institute of Metal Research Chinese Academy of SciencesShenyang 110016China Sch.ol of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Interdisciplinary Centre for Additive Manufacturing(ICAM) School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China Sch.ol of Materials Science and Engineering Tongji UniversityShanghai 201804China Key Laboratory for Ligh.-Weigh. Materials Nanjing Tech UniversityNanjing 210009China National Key Laboratory of Science and Tech.ology on Materials Under Sh.ck and Impact School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Tech.ology Ch.ngqing Innovation Center Chongqing 401135China

Th. mech.nical response of a single crystal titanium sample against(0001)α surface impact was investigated using molecular dynamics ***,non-uniform plastic deformation was observed in th. *** h.gh.strain rates,amorph.zation occurred near th. edge of th. contact region wh.re severe sh.ar strain induced a large number of stacking faults(SFs)and *** contrast,th. central part of th. contact region underwent less deformation with.significantly fewer ***,instead of amorph.zation by consuming SFs and dislocations,th.re was a gradual increase in th. density of dislocations and SFs during th. process of *** local amorph.us regions eventually grew into sh.ar bands.

关键词： Sh.ck compression Amorph.zation Sh.ar band Titanium Molecular dynamics

Spark Plasma Sintering of Boron Carbide Using Ti_(3)SiC_(2) as a Sintering Additive

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Journal of Wuh.n University of Tech.ology(Materials Science) 2024年第3期39卷 645-650页

作者： h.lya Biçer Mustafa Tuncer h.san göçmez Iurii Bogomol Valerii Kolesnich.nko Andrey Ragulya Kutah.a Dumlupinar University School of EngineeringDepartment of Metallurgical and Materials EngineeringKütahya 43100Tur-key Boron Based Advanced Ceramics Application and Research.Center Kütahya Dumlupınar UniversityKütahya 43100Turkey Advanced Tech.ologies Center(İLTEM) Kütahya Dumlupınar UniversityKütahya 43000Turkey Department of h.gh.Temperature Ma-terials and Powder Metallurgy National Technical University of Ukraine“Igor Sikorsky Kyiv Polytechnic Institute”Kyiv 03056Ukraine Frantsevich.Institute for Problems of Materials Science National Academy of Sciences of UkraineKyiv 03056Ukraine

Boron carbide h.s unique properties for wide application possibilities;h.wever,poor sinterability limits its *** approach.to overcome th.s limitation is th. addition of secondary ph.ses into boron *** carbide based composite ceramics are produced by th. direct addition of secondary ph.ses into th. structure or via reactive sintering using a sintering *** present study investigated th. effect of Ti_(3)SiC_(2) addition to boron carbide by reactive spark plasma sintering in th. range of 1700-1900℃.Ti_(3)SiC_(2) ph.se decomposed at h.gh.temperatures and reacted with.B4C to form secondary ph.ses of TiB2 and *** results demonstrated th.t th. increase of Ti_(3)SiC_(2) addition(up to 15 vol%)effectively promoted th. densification of B4C and yielded h.gh.r ***,as th. amount of Ti_(3)SiC_(2) increased furth.r,th. formation of microstructural inh.mogeneity and agglomeration of secondary ph.ses caused a decrease in h.rdness.

关键词： reactive sintering SPS boron carbide MAX ph.se

Enh.ncing fault-clearing algorith. for renewable-energy-based distribution systems using artificial neural networks

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Clean Energy 2024年第5期8卷 97-116页

作者： Rania g.Moh.med M.A.Ebrah.m Sh.dy h.E.Abdel Aleem Electrical Engineering Department Institute of Aviation Engineering and TechnologyGiza12658Egypt Electrical Engineering Department Faculty of Engineering at ShoubraBenha UniversityCairo11629Egypt

Integrating small and large-scale ph.tovoltaic(PV)solar systems into electrical distribution systems h.s become mandatory due to increased electricity bills and th. concern for limiting greenh.use ***,th. reliable and efficient operation of PV-based distribution systems can be confronted by th. intermittence and h.gh.variability of solar sources and th.ir consequential *** th.s regard,th.s article suggests a moderated fault-clearing strategy based on th. incremental conductance–maximum power point tracking(IC–MPPT)tech.ique and artificial neural networks(ANNs)to enh.nce fault detection,localization,and restoration pro-cesses in PV-based distribution *** proposed strategy leverages IC–MPPT to ensure optimal power generation from th. PV solar system,even in th. presence of *** tracking th. maximum power point,th. algorith. maintains th. performance of th. system and mitigates against th. impact of faults on th. output ***,an ANN is employed to improve fault detec-tion and localization *** developed ANN-based moderated fault-clearing strategy is trained using h.storical data and fault scenarios,enabling it to recognize fault patterns and make informed decisions th.ough.extensive simulations and comparisons with.traditional fault-clearing *** accomplish.th.s study,bench.arks in PV-based distribution systems are constructed and em-ployed using th. MATLAB®/Simulink®software ***,to validate th. efficacy of th. developed ANN-based moderated fault-clearing strategy,a real case study of a 1-MW PV-based distribution system in an industrial field located in giza governorate,Egypt,is tested and *** obtained results demonstrate th. effectiveness of th. IC–MPPT and ANN-based moderated fault-clearing strategy in ach.eving faster fault detection,precise fault localization,and efficient restoration in PV solar-based dis-tribution systems wh.le preserving maximum power extraction under small and larg

关键词： ph.tovoltaic solar systems fault-clearing algorith. incremental conductance renewable energy artificial neural network maximum power point tracking