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

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Chinese Physics C 2024年第3期48卷 169-179页

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

In this study,a microscopic shell-model description of the low-lying collective states in the weakly deformed nucleus ^(106)Cd within the recently proposed microscopic version of the Bohr-Mottelson model is provided.A good description of the excitation energies of the lowest ground,γ,andβquasibands is obtained without the adjustable kinetic energy ***,γdegrees of freedom are shown to play a crucial role in the description of spectroscopy of this nucleus.A modified SU(3)SU(3)preserving high-order interaction is used to produce aγ-unstable type of odd-even staggering,observed experimentally between the states of the quasi-γ*** current approach enables the characterization of observed intraband and interband quadrupole *** findings of this study propose an alternative interpretation of the fundamental question regarding the nature of low-energy vibrations,as well as the emergence of deformation and collectivity in weakly deformed atomic nuclei.

关键词： shell-model version of the Bohr-Mottelson model proton-neutron symplectic model Sp(12,R)dynamical algebra quadrupole dynamics

Magnesium oxide(MgO)nanoadsorbents in wastewater treatment:A comprehensive 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.gurunanthanan Anoop Singh M.M.M.g.P.g.Mantilaka g.Das Sandeep Arya Department of Physics Khalifa UniversityAbu Dhabi12788United Arab Emirates Postgraduate Institute of Science University of PeradeniyaPeradeniyaSri Lanka Department of humanities and Sciences Guru Nanak Institutions Technical CampusIbrahimpatnamHyderabad501506India Centre for global health Research Saveetha Medical College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai602105Tamil NaduIndia Department of Physics University of JammuJammu and Kashmir180006India

Wastewater contamination by heavy metals and synthetic dyes presents a significant environmental challenge,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 heavy metal and dye *** review comprehensively explores various aspects of MgO nanoparticles,including their structural characteristics and synthesis *** article delves into the morphology and crystallographic arrangement of MgO nanoparticles,offering insights into their structural *** the complexity of adsorption processes,the review identifies and analyzes parameters influencing the adsorption efficiency of MgO nanoparticles,such as temperature,ph,contact time,initial concentration,and co-existing *** interplay between these parameters and the adsorption capability of MgO nanoparticles emphasizes the importance of optimizing operational ***,the review assesses various synthesis methods for MgO nanoparticles,including sol-gel,hydrothermal,precipitation,green synthesis,solvothermal,and template-assisted *** discusses the advantages,limitations,and resulting nanoparticle characteristics of each method,enabling readers to grasp the implications of synthesis processes on adsorption *** comprehensive review consolidates current insights into the effectiveness of MgO nanoparticles as a potent nanoadsorbent for removing heavy metals and dyes from wastewater covering a wide spectrum of aspects related to MgO ***,there is a need to investigate the use of MgO in the treatment of actual wastewater or river water,in order to leverage its cost-effectiveness and high efficiency for practical water treatment applications in real-time.

关键词： MgO nanoparticles Nanoadsorbent Wastewater treatment heavy metals Dye separation Adsorption Synthesis methods

自体软骨细胞伴基质移植术后病人T2和T2*图变化:3T MRI临床应用初步研究结果

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国际医学放射学杂志 2010年第4期 407-408页

作者： g.h.welsch S.Trattnig T.hughes S.Quirbach A.Olk M.Blanke 郭丽君

目的膝关节自体软骨细胞伴基质移植术(MACT)后,比较病人的T2和T2*图变化,并分析2种方法的相关性。方法30例MACT病人,随访周期为(28.1±18.8)个月时均行3T MRI。配

关键词： MRI 自体软骨 T2 细胞

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

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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 645-650页

作者： hülya Biçer Mustafa Tuncer hasan göçmez Iurii Bogomol Valerii Kolesnichenko Andrey Ragulya Kutahya 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 Technologies Center(İLTEM) Kütahya Dumlupınar UniversityKütahya 43000Turkey Department of high-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 has unique properties for wide application possibilities;however,poor sinterability limits its *** approach to overcome this limitation is the addition of secondary phases into boron *** carbide based composite ceramics are produced by the direct addition of secondary phases into the structure or via reactive sintering using a sintering *** present study investigated the effect of Ti_(3)SiC_(2) addition to boron carbide by reactive spark plasma sintering in the range of 1700-1900℃.Ti_(3)SiC_(2) phase decomposed at high temperatures and reacted with B4C to form secondary phases of TiB2 and *** results demonstrated that the increase of Ti_(3)SiC_(2) addition(up to 15 vol%)effectively promoted the densification of B4C and yielded higher ***,as the amount of Ti_(3)SiC_(2) increased further,the formation of microstructural inhomogeneity and agglomeration of secondary phases caused a decrease in hardness.

关键词： reactive sintering SPS boron carbide MAX phase

膝关节3T和7TMRI使用专用的多通道线圈和优化的2D和3D的成像比较

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国际医学放射学杂志 2012年第6期 596-597页

作者： g.h.welsch V.Juras P.Szomolanyi T.C.Mamisch P.Baer C.Kronnerwetter 李桂来 MR Center Department of RadiologyMedical University of ViennaLazarettgasse 141090 ViennaAustria

目的显示两种7T("7T高分辨力成像"和"7T快速成像")28通道线圈膝关节成像与最佳的3T8通道线圈膝关节成像的比较。方法这项研究是伦理委员会审查批准的。3T和7TMRI均有10例健康的志愿者[(29.6±7.9)岁]进行了2个2D序列(PD-TSE和T1-SE)和3... 详细信息

目的显示两种7T("7T高分辨力成像"和"7T快速成像")28通道线圈膝关节成像与最佳的3T8通道线圈膝关节成像的比较。方法这项研究是伦理委员会审查批准的。3T和7TMRI均有10例健康的志愿者[(29.6±7.9)岁]进行了2个2D序列(PD-TSE和T1-SE)和3个3D序列(TRUFI,FLASh和PD-TSESPACE)检查。不同的阅片医师执行一致的评价标准来进行定量的对比噪声比(CNR)和定性评估。结果软骨-骨、软骨-液体、软骨-半月板和半月板-液体的信噪比(SNR)与CNR是一致的,大多数情况下7T比3T的要高,且7T快速检查略优于7T高分辨力检查。主观定性分析的结果是7T检查优于3T检查。阅片医师可靠性高(0.884～0.999)。结论通过高场强和合适的线圈,7T的分辨力可增强,图像采集时间可缩短,且能比3T得到更好的图像结果。要点①7T的MRI使用28通道膝关节线圈能得到高质量影像。②各同向性的3D-MR序列优于高磁场的2D序列。③7T高分辨力快速MR影像采集是可能的。④专用线圈确保高场强MRI在肌肉骨骼中的临床适用性。

关键词： MRI 3T 7T 软骨各同向性

应用3TMRI对人类膝关节移植软骨进行运动生物力学评估:活体可重复性研究

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国际医学放射学杂志 2009年第4期32卷 406-407页

作者： V.Juras g.h.welsch S.Millington P.Szomolanyi T.C.Mamisch K.Pinker 刘艳杰 Department of Radiodiagnostics MR Centre of ExcellenceMedical University of Vienna

本研究的目的是应用运动MRI研究股骨髁关节软骨T2变化的临床可行性及可重复性。利用柔性膝关节线圈．其允许MRI检查过程中从屈曲40°到完全伸直间不同位置采集数据。就观察者之间和测量个体之间的可变性进行Tz测量可重复性评估，并确定... 详细信息

本研究的目的是应用运动MRI研究股骨髁关节软骨T2变化的临床可行性及可重复性。利用柔性膝关节线圈．其允许MRI检查过程中从屈曲40°到完全伸直间不同位置采集数据。就观察者之间和测量个体之间的可变性进行Tz测量可重复性评估，并确定每名志愿者和观察者的变异系数（CV）。对3名不同的志愿者分别测量2次，感兴趣区由3名观察者在不同的时间点选出。为了证实其临床可行性，20例个体（10例病人和10名性别、年龄相匹配的健康人）参加了本研究。

关键词：运动生物力学膝关节移植可重复性关节软骨 MRI 评估变异系数(CV) 活体

Optimization of chemistry and process parameters for control of intermetallic formation in Mg sludges

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Journal of Magnesium and Alloys 2024年第4期12卷 1431-1448页

作者： Y.Fu g.g.Wang A.hu Y.Li K.B.Thacker J.P.Weiler h.hu Department of Mechanical Automotive and Materials EngineeringUniversity of Windsor401 Sunset AveWindsorOntario N9B 3P4Canada global Technology Centre Meridian Lightweight Technologies25 MacNab AveStrathroyOntario N7G 4H6Canada

Intermetallic formation in sludge during magnesium(Mg)melting,holding and high pressure die casting practices is a very important ***,very often it is overlooked by academia,original equipment manufacturers(OEM),metal ingot producers and even die *** aim of this study was to minimize the intermetallic formation in Mg sludge via the optimization of the chemistry and process *** Al8Mn5 intermetallic particles were identified by the microstructure analysis based on the Al and Mn *** design of experiment(DOE)technique,Taguchi method,was employed to minimize the intermetallic formation in the sludge of Mg alloys with various chemical compositions of Al,Mn,Fe,and different process parameters,holding temperature and holding *** sludge yield(SY)and intermetallic size(IS)was selected as two *** optimum combination of the levels in terms of minimizing the intermetallic formation were 9 wt.%Al,0.15 wt.%Mn,0.001 wt.%(10 ppm)Fe,690℃ for the holding temperature and holding at 30 mins for the holding time,*** best combination for smallest intermetallic size were 9 wt.%Al,0.15 wt.%Mn,0.001 wt.%(10 ppm)Fe,630℃ for the holding temperature and holding at 60 mins for the holding time,*** groups of sludge factors,Chemical Sludge(CSF),Physical Sludge(PSF)and Comprehensive Sludge Factors(and CPSF)were established for prediction of sludge yields and intermetallic sizes in Al-containing Mg *** CPSF with five independent variables including both chemical elements and process parameters gave high accuracy in prediction,as the prediction of the PSF with only the two processing parameters of the melt holding temperature and time showed a relatively large deviation from the experimental *** Chemical Sludge Factor was primarily designed for small ingot producers and die casters with a limited melting and holding capacity,of which process parameters could be fixed *** Physical Sludge Factor could be used f

关键词： Magnesium sludge Al-Mn intermetallic Optimization Taguchi method Sludge factor Chemical composition Process parameter

膝关节软骨的生化MRI（T2、T2*和磁化转移率）:超高场（7T）成像的可行性,并与高场（3T）的比较

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国际医学放射学杂志 2011年第4期 400-401页

作者： g.h.welsch S.Apprich S.Zbyn T.C.Mamisch V.Mlynarik K.Schef-fler 胡秀华 MR Center Department of RadiologyMedical University of Vienna

目的本研究比较了在7T和3T场强下,对关节软骨进行定量T2、T2*和磁化转移率(MTR)测定的能力和可重复性。方法健康志愿者[(25.8±5.7)岁]的17个膝关节在3T和7T的MR设备上分别进行髌骨横断面扫描,使用同类型表面线圈和来自同一厂家的全身M... 详细信息

目的本研究比较了在7T和3T场强下,对关节软骨进行定量T2、T2*和磁化转移率(MTR)测定的能力和可重复性。方法健康志愿者[(25.8±5.7)岁]的17个膝关节在3T和7T的MR设备上分别进行髌骨横断面扫描,使用同类型表面线圈和来自同一厂家的全身MR系统。其中,13个

关键词： T2 T2* 磁化转移软骨 7T 3T

Exact solutions for magnetohydrodynamic nanofluids flow and heat transfer over a permeable axisymmetric radially stretching/shrinking sheet

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Chinese Physics B 2024年第2期33卷 108-114页

作者： U.S.Mahabaleshwar g.P.Vanitha L.M.Pérez Emad h.Aly I.Pop Department of Studies in Mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of Mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of Mathematics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the magnetohydrodynamic impact on the axisymmetric flow of Al_(2)O_(3)/Cu nanoparticles suspended in h_(2)O past a stretched/shrinked *** the use of partial differential equations and the corresponding thermophysical characteristics of nanoparticles,the physical flow process is *** resultant nonlinear system of partial differential equations is converted into a system of ordinary differential equations using the suitable similarity *** transformed differential equations are solved *** of the magnetic parameter,solid volume fraction and stretching/shrinking parameter on momentum and temperature distribution have been analyzed and interpreted *** skin friction and Nusselt number were also *** addition,existence of dual solution was deduced for the shrinking sheet and unique solution for the stretching ***,Al_(2)O_(3)/h_(2)O nanofluid flow has better thermal conductivity on comparing with Cu/h_(2)O ***,it was found that the first solutions of the stream are stable and physically realizable,whereas those of the second ones are unstable.

关键词： magnetohydrodynamic nanofluid stretching/shrinking sheet axisymmetric flow analytical solution suction/injection