检索结果-南通市图书馆

国际医学放射学杂志 2020年第6期 741-742页

作者：刘林翰 k.s.choi s.H.You Y.Han J.C.Ye B.Jeong s.H.choi Department of Radiology Seoul National University Hospital

摘要由动态增强MRI(DCE-MRI)获得的药代动力学(Pk)参数可以评估星形细胞瘤微循环的通透性,但动脉输入函数(AIF)的不可靠性仍然是一个挑战。目的建立一个深度

关键词：

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

维普期刊数据库

特发性正常颅压脑积水的风险评估：基于大脑形态学的列线图开发和验证

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 2023年第6期 746-747页

作者： s.Y.Yun k.s.choi C.H.suh s.C.kim H.Heo W.H.shim 徐浩洋

摘要目的根据MRI影像特征开发并验证用于预测特发性正常颅压脑积水（iNPH）的列线图。方法从2所三级转诊医院（其中一家医院作为训练集，另一家医院为验证集）回

关键词：

早期胃癌:对符合扩大标准的胃癌行治疗性内镜下黏膜切除术后的CT监测是否必要?

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 2017年第1期 83-84页

作者： k.s.choi s.H.kim s.G.kim J.k.Han 陈丽华 Department of Radiology Seoul National University Hospital

摘要目的符合扩大标准的早期胃癌(EGC)行治疗性内镜下黏膜剥离术(EsD)后,评价腹盆部CT随访对于监测胃外复发的价值。材料与方法该回顾性研究经机构伦理委

关键词：早期胃癌治疗性 EGC CT

Mathematical modeling and simulations of stress mitigation by coating polycrystalline particles in lithium-ion batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2024年第6期45卷 947-962页

作者： N.IQBAL J.choi s.F.sHAH C.LEE s.LEE Department of Mechanical Roboticsand Energy EngineeringDongguk University-SeoulSeoul 04620Republic of Korea

A chemo-mechanical model is developed to investigate the effects on the stress development of the coating of polycrystalline Ni-rich LiNixMnyCo_(z)O_(2)(x≥0.8)(NMC)particles with poly(3,4-ethylenedioxythiophene)(PEDOT).The simulation results show that the coating of primary NMC particles significantly reduces the stress generation by efficiently accommodating the volume change associated with the lithium diffusion,and the coating layer plays roles both as a cushion against the volume change and a channel for the lithium transport,promoting the lithium distribution across the secondary particles more ***,the lower stiffness,higher ionic conductivity,and larger thickness of the coating layer improve the stress *** paper provides a mathematical framework for calculating the chemo-mechanical responses of anisotropic electrode materials and fundamental insights into how the coating of NMC active particles mitigates stress levels.

关键词： lithium-ion battery(LIB) polycrystalline particle coating finite element simulation Ni-rich LiNixMnyCo_(z)O_(2)(x>0.8)(NMC)

维普期刊数据库

Extracellular vesicles and angiotensin-converting enzyme 2 in COVID-19 disease

在线全文

学校读者我要写书评

暂无评论

BIOCELL 2024年第1期48卷 1-8页

作者： YU LIU ROBERT J.kAsPER NATALIE J.s.choi Department of Family and Community Medicine Northwestern University Feinberg School of MedicineChicagoIllinois

Extracellular vesicles(EVs)are membranous vesicular structures released from almost all eukaryotic cell types under different physiological or pathological *** evidence demonstrates that EVs can serve as mediators of intercellular communication between donor and recipient cells or microorganism-infected and noninfected *** disease 2019(COVID-19)disease is caused by infection of the severe acute respiratory syndrome coronavirus 2(sARs-CoV-2)of host cells in the respiratory system and various extra-pulmonary tissue/organs,resulting in complications of multiple organ *** the cell surface receptor,angiotensin-converting enzyme 2(ACE2)mediates cellular entry of sARs-CoV-2 into the host cells in patients with *** studies have found that ACE2 can be released with EVs,which have been shown to interfere with the entry of the virus into host cells and thus may be involved in COVID-19 *** addition,ACE2,neprilysin(NEP),and thimet oligopeptidase(TOP)are the key enzymes that regulate angiotensin metabolism by converting angiotensin II or angiotensin I to angiotensin 1-7,the latter of which has protective effects in counterbalancing the harmful effects of angiotensin II in COVID-19 *** review summarizes the recent research progress regarding EV-associated ACE2,NEP,and TOP and the perspectives of their potential involvement in the pathophysiology of COVID-19 disease.

关键词： Extracellular vesicles COVID-19 Angiotensin converting enzyme 2 Thimet oligopeptidase

Analysis and Modeling of Mobile Phone Activity Data Using Interactive Cyber-Physical social system

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

Computers, Materials & Continua 2024年第9期80卷 3507-3521页

作者： Farhan Amin Gyu sang choi school of Computer science and Engineering Yeungnam UniversityGyeongsan38541Republic of Korea

Mobile networks possess significant information and thus are considered a gold mine for the researcher’s *** call detail records(CDR)of a mobile network are used to identify the network’s efficacy and the mobile user’s *** is evident from the recent literature that cyber-physical systems(CPs)were used in the analytics and modeling of telecom *** addition,CPs is used to provide valuable services in smart *** general,a typical telecom company hasmillions of subscribers and thus generatesmassive amounts of *** this aspect,data storage,analysis,and processing are the key *** solve these issues,herein we propose a multilevel cyber-physical social system(CPss)for the analysis and modeling of large internet *** proposed multilevel system has three levels and each level has a specific ***,raw Call Detail Data(CDR)was collected at the first ***,the data preprocessing,cleaning,and error removal operations were *** the second level,data processing,cleaning,reduction,integration,processing,and storage were ***,suggested internet activity record measures were *** proposed system initially constructs a graph and then performs network *** proposed CPss system accurately identifies different areas of internet peak usage in a city(Milan city).Our research is helpful for the network operators to plan effective network configuration,management,and optimization of resources.

关键词： Cyber-physical social systems big data cyber-physical systems pervasive computing smart city big data management techniques

数字化乳腺摄影在乳腺癌筛查中的作用：一项超过800万韩国女性的对比研究

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

国际医学放射学杂志 2020年第2期 237-237页

作者： s.Hong s.Y.song B.Park M.suh k.s.choi s.E.Jung 李璐 National Cancer Control Institute National Cancer Center

在乳腺癌筛查中,全数字化乳腺X线摄影(FFDM)优于传统的屏-片乳腺摄影(sFM)已得到公认,尤其对于年龄<50岁或致密型乳腺的妇女。目的评价FFDM筛查乳腺

关键词：乳腺癌筛查 PPV 敏感度数字化乳腺摄影韩国女性

Modeling asymmetric fracture mechanics of Mg alloy wire in drawing process

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第5期12卷 2057-2069页

作者： sunghoon choi Jongwon shin Joung sik suh Dongchoul kim Department of Mechanical Engineering Sogang UniversitySeoul04107Republic of Korea Advanced Metals Division Korea Institute of Materials ScienceChangwon 51508Republic of Korea

In this study,a numerical analysis was conducted on the ductile fracture of a 2-mm diameter Mg-1Zn-0.5Mn-0.5sr-0.1Ca alloy wire during *** hexagonally close-packed crystal structure of Mg alloys causes asymmetric fracture behavior,especially in the compression *** aim of this study is to develop a comprehensive damage model for Mg alloy wire that accurately predicts ductile fracture,with a focus on the compression region.A novel experimental method was introduced to measure the ductile fracture of Mg alloy wires under different stress *** wire drawing process was simulated using the Generalized Incremental stress-state dependent damage(GIssMO)Model and the semi-Analytical Model for Polymers(sAMP)*** damage model's prediction and the experimental results were found to be in excellent agreement,especially in determining crack *** analysis established a safe zone diagram for die angle and reduction ratio,and experimental validation confirmed the feasibility of this *** proposed damage model can provide a practical and reliable analysis for optimizing the drawing process of Mg alloy wire.

关键词： Mg alloy Wire drawing Finite element method Damage model safe zone diagram

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

深度学习用于胸片上肺转移的检测

国际医学放射学杂志 2022年第1期 108-108页

作者： E.J.Hwang J.s.Lee J.H.Lee W.H.Lim J.H.kim k.s.choi 李鹏飞

摘要在CT检查受限的情况下，计算机辅助检测(CAD)系统有助于胸部X线摄影对肺转移的监测。目的评估基于深度学习(DL)的CAD系统能否提高肿瘤病人胸部X线片上

关键词：