检索结果-南通市图书馆

日用化学品科学 1981年第1期 48-51页

作者： c.k.kim 洪绍元

人参是人参属植物的根部,自古以来在东方用作治病的灵药,也作为化妆品的成分用在皮肤和头发上。人参汁(萃出物)作为护肤(外用)的效果曾有经验报道。对于头发保护方面人参不仅能防脱发,也能防止白发。对于

关键词：人参补气药头发胶原水解物皂素

3TMR重复动静脉标记技术的非增强肾血管成像与增强MR血管成像的对比研究:用于肾功能正常者

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2015年第2期 202-203页

作者： S.Y.Park c.k.kim E.J.kim B.k.Park 卢忠飞 Department of Radiology and center for Imaging Science Samsung Medical Center Sungkyunkwan University School of Medicine50 Ilwon-dong Gangnam-gu Seoul Republic of Korea 135-71

摘要目的研究采用重复动静脉标记(RAVEL)技术行非对比增强MR血管成像(Nc-MRA)评估肾动脉的可行性,并与对比增强MR血管成像(cE-MRA)进行比较。方法在

关键词： MR Nc 肾动脉动静脉 cE 血管成像对比增强肾功能 MRA

3TMRI动态对比增强在宫颈癌联合放化疗前后的应用

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2013年第1期 90-91页

作者： J.kim c.k.kim B.k.Park S.Y.Park S.J.Huh B.kim 程悦 Department of Radiology and center for Imaging Science Samsung Medical CenterSungkyunkwan University School of Medicine50 Ilwon-dongGangnam-guSeoulRepublic of Korea 135-710

目的评价宫颈癌联合放化疗前后在3TMRI上动态对比增强(DcE-MRI)参数的改变,并与肿瘤对治疗的最终反应进行相关性比较。方法 35例宫颈癌病人在联合放化疗前、开始治疗后4周以及治疗程结束后1个月进行DcE-MRI检查,测定肿瘤以及正常臀肌的D... 详细信息

目的评价宫颈癌联合放化疗前后在3TMRI上动态对比增强(DcE-MRI)参数的改变,并与肿瘤对治疗的最终反应进行相关性比较。方法 35例宫颈癌病人在联合放化疗前、开始治疗后4周以及治疗程结束后1个月进行DcE-MRI检查,测定肿瘤以及正常臀肌的DcE-MRI指标。肿瘤对治疗的最终反应通过肿瘤大小和体积变化确定,并与治疗前的DcE-MRI指标进行相关性分析。结果联合放化疗后,肿瘤内部的DcE-MRI指标(包括ktrans,ve和kep)明显改变(Pktrans和ve早期明显升高(P0.05)。治疗前,肿瘤组织的ktrans,kep,ve和vp明显高于肌肉组织(PcE-MRI指标与肿瘤最终的大小或体积改变无统计学相关性。结论 DcE-MRI指标可能有助于评价宫颈癌对联合放化疗的早期改变,但仍需大样本、确定性的研究。

关键词：动态对比增强 MRI 化疗前后 DcE 宫颈癌

使用扩散加权MRI识别隐性前列腺癌病人并进行积极监测

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2015年第4期 406-407页

作者： T.H.kim J.Y.Jeong S.W.Lee c.k.kim B.k.Park H.H.Sung 王凤丽 Department of Urology Samsung Medical CenterSungkyunkwan University School of Medicine

摘要目的探讨扩散加权MRI(DW-MRI)中的表观扩散系数(ADc)是否有助于识别积极复查(AS)人群的隐性前列腺癌。方法对前列腺根治性切除性术前行DW-MRI检查的

关键词：前列腺癌 AS ADc 病人扩散加权 MRI

Inclusive quasielastic neutrino-nucleus scattering with energy density functional nuclear models

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

chinese Physics c 2024年第8期48卷 153-158页

作者： k.S.kim Soonchul choi Hana Gil chang Ho Hyun School of liberal arts and science korea aerospace universitygoyang 10540korea center for exotic nuclear studies institute for basic sciencedaejeon 34126korea center for extreme nuclear matters korea universityseoul 02841korea Department of physics education daegu universitygyeongsan 38453korea

In this study,we calculated the inclusive charged-current neutrino-nucleus scattering from ^(40)Ar in the quasielastic *** explore the effect of uncertainties stemming from the nuclear structure,we used the kIDS(korea-IBS-Daegu-SkkU)nuclear energy density functional and Skyrme force models,namely SLy4,SkI3,and *** models were selected to have distinct behavior in terms of the density dependence of the symmetry energy and the effective mass of the *** the charged-current neutrino scattering,the single-and double-differential cross sections were calculated for various *** cross sections are reported as a function of the incident neutrino *** theoretical cross sections were compared with experimental data,and the roles of the effective mass and symmetry energy were investigated in terms of charged-current neutrino-nucleus scattering.

关键词： energy density functional neutrino-nucleus scattering symmetry energy effective mass of the nucleon

ADc值对宫颈癌同步放化疗临床转归的预测价值

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2020年第1期 121-121页

作者： k.Gu c.k.kim c.H.choi Y.c.Yoon W.Park 张立武 Department of Radiology and center for Imaging Science Samsung Medical Center Sungkyunkwan University School of Medicine

目的探讨扩散加权成像(DWI)预测宫颈癌病人同步放化疗(ccRT)后临床转归的价值。方法纳入124例接受确定ccRT的宫颈癌病人,在开始治疗前和治疗后1个月

关键词：宫颈癌同步放化疗临床转归 ADc 预测价值

Hyperreflective photonic crystals created by shearing colloidal dispersions at ultrahigh volume fraction

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2024年第1期10卷 161-173页

作者： Minji kim Jong Bin kim Shin-Hyun kim Department of chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea

colloidal crystallization serves as one of the most economic and scalable production methods for photonic ***,insufficient optical performance,nonuniformity and low reproducibility remain challenges for advanced high-value *** this study,we optimally formulate a photocurable dispersion of silica particles and apply shear flow to unify the orientation of the colloidal crystals,ensuring high optical performance and *** silica particles experience strong repulsion at ultrahigh volume fractions of 50%but demonstrate low mobility,leading to polycrystalline *** shear flow to the dispersions allows the silica particles to rearrange into larger crystalline domains with a unidirectional orientation along the *** shear-induced structural change produces absolute reflectivity at the stopband as high as 90%and a high transparency of 90%at off-resonant wavelengths with minimal diffusive ***,the strong interparticle repulsion ensures a uniform volume fraction of particles throughout the dispersion,reducing deviations in the optical *** intricately micropattern the photocurable dispersions using ***,the photonic films and patterns can be stacked to form multiple layers,displaying mixed structural colors and multiple reflectance peaks without sacrificing *** superior photonic materials hold promise for various optical applications,including optical components and anticounterfeiting patches.

关键词： properties. dispersion reflectivity

Boosted Lithium-Ion Transport kinetics in n-Type Siloxene Anodes Enabled by Selective Nucleophilic Substitution of Phosphorus

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第10期16卷 618-637页

作者： Se In kim Woong-Ju kim Jin Gu kang Dong-Wan kim School of civil Environmental and Architectural EngineeringKorea University02841 SeoulSouth Korea Nanophotonics Research center Korea Institute of Science and Technology02792 SeoulSouth Korea

Doped two-dimensional(2D)materials hold significant promise for advancing many technologies,such as microelectronics,optoelectronics,and energy ***,n-type 2D oxidized Si nanosheets,namely n-type siloxene(n-SX),are employed as Li-ion battery *** thermal evaporation of sodium hypophosphite at 275℃,P atoms are effectively incorporated into siloxene(SX)without compromising its 2D layered morphology and unique kautsky-type crystal ***,selective nucleophilic substitution occurs,with only Si atoms being replaced by P atoms in the O_(3)≡Si-H *** resulting n-SX possesses two delocalized electrons arising from the presence of two electron donor types:(i)P atoms residing in Si sites and(ii)H *** doping concentrations are varied by controlling the amount of precursors or their mean free *** at 2000 mA g^(-1),the n-SX electrode with the optimized doping concentration(6.7×10^(19) atoms cm^(-3))delivers a capacity of 594 mAh g^(-1) with a 73%capacity retention after 500 *** improvements originate from the enhanced kinetics of charge transport processes,including electronic conduction,charge transfer,and solid-state *** approach proposed herein offers an unprecedented route for engineering SX anodes to boost Li-ion storage.

关键词： Li-ion battery Two-dimensional N-type siloxene Doping mechanism kinetics

Postmortem ^(7)Li NMR analysis for assessing the reversibility of lithium metal electrodes in lithium metal batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy chemistry 2024年第7期94卷 430-440页

作者： Jaewon Baek Sunha kim Hee-Tak kim Oc Hee Han Department of chemical&Biomolecular Engineering KAISTDaejeon 34141Republic of Korea Metropolitan Seoul center Korea Basic Science InstituteSeoul 03759Republic of Korea Graduate School of Analytical Science&Technology Chungnam National UniversityDaejeon 34134Republic of Korea

Despite the proficiency of lithium(Li)-7 NMR spectroscopy in delineating the physical and chemical states of Li metal electrodes,challenges in specimen preparation and interpretation impede its *** this study,we conducted a comprehensive postmortem analysis utilizing ^(7)Li NMR,employing a stan-dard magic angle spinning probe to examine protective-layer coated Li metal electrodes and LiAg alloy electrodes against bare Li metal electrodes within Li metal batteries(LMBs).Our investigation explores the effects of sample burrs,alignment with the magnetic field,the existence of liquid electrolytes,and precycling on the ^(7)Li NMR *** contrasting NMR spectra before and after cycling,we identi-fied alterations in Li^(0) and Li^(+) signals attributable to the degradation of the Li metal *** NMR analyses decisively demonstrate the efficacy of the protective layer in mitigating dendrite and solid elec-trolyte interphase ***,we noted that Li*ions near the Li metal surface exhibit magnetic susceptibility anisotropy,revealing a novel approach to studying diamagnetic species on Li metal elec-trodes in *** study provides valuable insights and practical guidelines for characterizing distinct lithium states within LMBs.

关键词： NMR spectroscopy Lithium-7 Lithium metal battery Electrolyte Electrode-protective layer Solid electrolyte interface Magnetic susceptibility anisotropy Lithium-metal NMR signal Diamagnetic^(7)Li NMR signal

A comprehensive review on the resynthesis of ternary cathode active materials from the leachate of Li-ion batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy chemistry 2024年第8期95卷 446-463,I0010页

作者： Dongwoo kim Hyeoncheol Joo chanmin kim Seoa kim Wan-Yi kim Sangwoo Han Joongkil Park Soyeon Park Heechul Jung Sanghyuk Park kyungjung kwon Department of Energy and Mineral Resources Engineering Sejong UniversitySeoul 05006Republic of Korea LIB Recycling Research Group LIB Materials R&D CenterPOSCO HoldingsPohang 37859Republic of Korea Department of Future Energy convergence Seoul National University of Science&Technology232 Gongreung-roNowon-guSeoul 01811Republic of Korea Autonomous Intelligent Unmanned Flying Vehicles Institute Sejong UniversitySeoul 05006Republic of Korea

This review highlights the importance of recovering valuable metals from spent Li-ion battery(LIB)cathodes through the resynthesis of cathode active materials(cAMs).The resynthesis process of cAMs,a promising recycling method that directly produces cAM precursors from LIB leachate,is *** process encompasses six key steps,including pretreatment,leaching,purification,adjustment of metal concentrations,precursor synthesis,and *** review also investigates the potential introduction of impurity elements during cAM resynthesis and provides tolerance levels for these impurities based on thorough reference ***,it addresses challenges related to the commercialization of the resynthesis ***,this review represents the first comprehensive assessment of cAM resynthesis,including the systematic evaluation of 12 impurity elements(Fe,Li,Al,cu,c,P,F,Na,cl,S,Mg,and Zn).Overall,this comprehensive review is poised to support the commercial development of resynthesized cAMs by offering valuable guidelines for managing impurities and streamlining the purification process.

关键词： Li-ion battery Recycling Resynthesis Leachate Impurity