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Effect of Temperature and Gamma-Ray Irradiation on Optical Characteristics of Fiber Bragg Grating Inscribed Radiation-Resistant Optical Fiber

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Photonic Sensors 2020年第1期10卷 16-33页

作者： Seongmin JU Youngwoong KIM Kadathala LINGANNA Yune Hyoun KIM Won-taek han School of Electrical Engineering and Computer Science Gwangju Institute of Science and TechnologyGwangju 61005South Korea Smart Photonics Research Center/Advanced Optical Lens Research Center/Laser Research Center Korea Photonics Technology InstituteGwangju 61007South Korea

A new radiation-hard germano-silicate glass optical fiber with a pure silica glass buffer and a boron-doped silica glass inner cladding was fabricated for temperature sensor application based on the fiber Bragg grating(FBG)underg-ray irradiation *** temperature dependences of optical attenuation at 1550.5 nm and Bragg reflection wavelength shift from 18℃to 40℃before theγ-ray irradiation were about 4.57´10^(-4)dB/℃and 5.48 pm/℃,*** radiation-induced optical attenuation at 1550.5 nm and the radiation-induced Bragg reflection wavelength shift under theγ-ray irradiation with the total dose of 22.85 kGy at 35℃were about 0.03 dB/m and 0.12 nm,respectively,with theγ-ray irradiation sensitivity of 5.25´10^(-3)pm/*** temperature and theγ-ray irradiation dependence of optical attenuation at 1550.5 nm in the FBG written fiber with boron-doped silica glass inner cladding were about 6 times and 4 times lower than that in the FBG written fiber without boron-doped silica glass inner cladding under a temperature change from 18℃to 40℃and theγ-ray irradiation with the total dose of 22.85 kGy at 35℃,***,the effect of temperature increase on the Bragg reflection wavelength of the FBG written fiber with boron-doped silica inner cladding was much larger about 1000 times than that of theγ-ray ***,no influence on the reflection power of the Bragg wavelengths and the full width at half maximum(FWHM)bandwidth under temperature and theγ-ray irradiation change was ***,after theγ-ray irradiation with the dose of 22.85 kGy,no significant change in the refractive index was found but the residual stresses developed in the fiber were slightly relaxed or retained.

关键词： Optical fiber radiation resistance temperature sensor fiber Bragg grating radiation-induced attenuation

Optimization of Waveguide Structure for Tunable Optical Switch in Si/SiGe System

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光学学报 2003年第S1期23卷 263-264页

作者： Seongjae Boo Won-taek han Korea Institute of Industrial Technology (KITECH) Department of Information and Communications Kwangju Institute of Science and Technology (K-JIST) 1 Oryong-dong Buk-gu Gwangju 500-712 South Korea

A new electro-optical device using Si/SiGe-system with two parallel ridge waveguides is proposed for optical switching and the optimization of the structure for a single mode operation is investigated.

关键词： for it of Optimization of Waveguide Structure for Tunable Optical Switch in Si/SiGe System in

Value of glucose transport protein 1 expression in detecting lymph node metastasis in patients with colorectal cancer

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World Journal of Clinical Cases 2024年第5期12卷 931-941页

作者： Hongsik Kim Song-Yi Choi Tae-Young Heo Kyeong-Rok Kim Jisun Lee Min Young Yoo taek-Gu Lee Joung-Ho han Department of Internal Medicine Chungbuk National University HospitalCheongju 28644South Korea Department of Pathology Chungnam National University College of MedicineDaejeon 35015South Korea Information and Statistics Chungbuk National UniversityCheongju 28644South Korea Department of Radiology College of MedicineChungbuk National UniversityChungbuk National University HospitalCheongju-si 28644South Korea Department of Nuclear Medicine School of MedicineInha UniversityIncheon 22332South Korea Department of Surgery Chungbuk National UniversityCollege of MedicineCheongju-si 28644South Korea Department of Internal Medicen Chungbuk National UniversityCollege of medicineCheongju-si 28644South Korea

BACKGROUND There are limited data on the use of glucose transport protein 1(GLUT-1)expre-ssion as a biomarker for predicting lymph node metastasis in patients with colorectal ***-1 and GLUT-3,hexokinase(HK)-II,and hypoxia-induced factor(HIF)-1 expressions may be useful biomarkers for detecting primary tumors and lymph node metastasis when combined with fluorodeoxyglucose(FDG)uptake on positron emission tomography/computed tomography(PET/CT).AIM To evaluate GLUT-1,GLUT-3,HK-II,and HIF-1 expressions as biomarkers for detecting primary tumors and lymph node metastasis with 18F-FDG-PET/*** This retrospective study included 169 patients with colorectal cancer who underwent colectomy and preoperative 18F-FDG-PET/CT at Chungbuk National University Hospital between January 2009 and May *** tissue cores from the central and peripheral areas of the tumors were obtained and were examined by a dedicated pathologist,and the expressions of GLUT-1,GLUT-3,HK-II,and HIF-1 were determined using immunohisto-chemical *** analyzed the correlations among their expressions,various clinicopathological factors,and the maximum standardized uptake value(SUVmax)of PET/*** GLUT-1 was found at the center or periphery of the tumors in 109(64.5%)of the 169 ***-1 positivity was significantly correlated with the SUVmax of the primary tumor and lymph nodes,regardless of the biopsy site(tumor center,P<0.001 and P=0.012;tumor periphery,P=0.030 and P=0.010,respectively).GLUT-1 positivity and negativity were associated with higher and lower sensitivities of PET/CT,respectively,for the detection of lymph node metastasis,regardless of the biopsy ***3,HK-II,and HIF-1 expressions were not significantly correlated with the SUVmax of the primary tumor and lymph *** GLUT-1 expression was significantly correlated with the SUVmax of 18F-FDG-PET/CT for primary tumors and lymph *** should consider GLUT-1 expression in preoperative endoscop

关键词： 18F-FDG-PET-CT Biomarker Colorectal neoplasms Glucose transporter type 1 Lymph node

Thermal Stabilization of EDFA gain by hybrid concatenation of antimony-doped silica EDF

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光学学报 2003年第S1期23卷 419-420页

作者： Young-Eun Im Uh-Chan Ryu P. Babu Won-taek han K. Oh David J. DiGiovanni Baishi Wang Anand Hariharan Department of Information and Communications K-JIST Kwangju 500712 Rep. of KoreaDepartment of Information and Communications K-JIST Kwangju 500712 Rep. of KoreaDepartment of Information and Communications K-JIST Kwangju 500712 Rep. of KoreaDepartment of Information and Communications K-JIST Kwangju 500712 Rep. of KoreaDepartment of Information and Communications K-JIST Kwangju 500712 Rep. of KoreaOFS Laboratories 700 Moutain Ave. Murray Hill NJ 07974 USAOFS Fitel SPD 19 Schoolhouse Road Somerset NJ 08873 USAOFS Fitel SPD 19 Schoolhouse Road Somerset NJ 08873 USA

Sb-doped silica EDF showed an opposite temperature dependent gain profile compared to Al-doped silica EDF. Concatenation of those two EDFs showed a gain variation less than ?0.4 dB over 40nm of C-band with the 15dB ga... 详细信息

关键词： EDFA in on Thermal Stabilization of EDFA gain by hybrid concatenation of antimony-doped silica EDF of by

Discovery of Plasmodium vivax serologic markers using high-throughput protein arrays

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Discovery of Plasmodium vivax serologic markers using high-t...

Fe_(3)GeTe_(2):a site-differentiated Hund metal

中国动物学会寄生虫学专业委员会第十届全国寄生虫学青年工作者学术研讨会

作者： Feng Lu Yaobao Liu Jin-Hee han Guoding Zhu Huayun Zhou Qi Gao Eun-taek han Jun Cao Jiangsu Institute of Parasitic Diseases Key Laboratory of Parasitic Disease Control and Prevention (Ministry of Health) Jiangsu Provincial Key Laboratory of Parasite Molecular Biology Department of Medical Environmental Biology and Tropical Medicine School of Medicine Kangwon National University

Plasmodium vivax is the world’s most widely distributed,and difficult control human *** transmission declines,surveillance becomes increasingly important for expedite the goal of malaria elimination and *** the traditional techniques for malaria surveillance become less sensitive and relatively costly,there is great potential for the development and application of serological biomarkers of

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npj Computational Materials 2022年第1期8卷 2355-2360页

作者： taek Jung Kim Siheon Ryee Myung Joon han Department of Physics KAISTDaejeon34141Republic of Korea I.Institute of Theoretical Physics University of HamburgNotkestrasse 9-11Hamburg22607Germany

Magnetism in two-dimensional(2D)van der Waals(vdW)materials has lately attracted considerable attention from the point of view of both fundamental science and device ***,establishing a detailed and solid understanding of their magnetism is the key first step toward various *** Fe_(3)GeTe_(2)is a representative ferromagnetic(FM)metal in this family,many aspects of its magnetic and electronic behaviors still remain ***,we report our new finding that Fe_(3)GeTe_(2)is a special type of correlated metal known as“Hund metal”.Furthermore,we demonstrate that Hund metallicity in this material is quite unique by exhibiting remarkable site dependence of Hund correlation strength,hereby dubbed“site-differentiated Hund metal”.Within this new picture,many of the previous experiments can be clearly understood,including the ones that were seemingly contradictory to one another.

关键词： strength establishing metallic

Plasmodium vivax GPI-anchored micronemal antigen(PvGAMA) binds human erythrocytes independent of Duffy antigen status

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Plasmodium vivax GPI-anchored micronemal antigen(PvGAMA) bin...

Effect of Radiant Spectral Characteristics on Performance of a Near-Infra-Red Heating Module

中国动物学会寄生虫学专业委员会第十届全国寄生虫学青年工作者学术研讨会

作者： Yang Cheng Feng Lu Bo Wang Jian Li Jin-Hee han Daisuke Ito Deok-Hoon Kong Lubin Jiang Jian Wu Kwon-Soo Ha Eizo Takashima Jetsumon Sattabongkot Won Sun Park Seok-Ho Hong Sanjay A.Desai Louis H.Miller Takafumi Tsuboi Eun-taek han Department of Medical Environmental Biology and Tropical Medicine School of MedicineKangwon National University Department of Parasitology Wuxi Medical School Jiangnan University Laboratory of Malaria and Vector Research (LMVR) National Institute of Allergy and Infectious Diseases (NIAID) National Institutes of Health (NIH) Division of Malaria Research Proteo-Science Center Ehime University Department of Molecular and Cellular Biochemistry School of Medicine Kangwon National University Key Laboratory of Molecular Virology & Immunology Unit of Human Parasite Molecular and Cell Biology Institut Pasteur of Shanghai Mahidol Vivax Research Unit Faculty of Tropical Medicine Mahidol University Department of Physiology School of Medicine Kangwon National University Department of Internal Medicine School of Medicine Kangwon National University

Plasmodium vivax, a major agent of malaria in both temperate and tropical climates, has a limited capacity for infecting humans lacking the Duffy(Fy) blood group antigen as this receptor is critical for erythrocyte invasion. Recent surveys in various endemic regions, however, have reported P. vivax infections in Duffy-negative individuals, suggesting that the parasite may utilize alternative receptor-ligand pairs to complete erythrocyte invasion. Here, we identified and characterized a novel parasite ligand, GPI-anchored micronemal antigen(Pv GAMA), that can bind human erythrocytes regardless of Duffy antigen status. Specific antibodies raised against PvG AMA localize the protein to the parasite microneme, consistent with a role in invasion. These antibodies also inhibited Pv GAMA binding to erythrocytes in a dose-dependent manner. Pv GAMA appears to play a role in a sialic acid-independent, chymotrypsin-sensitive invasion pathway. Thus, Pv GAMA may be an adhesion molecule for invasion of Duffy positive and negative human erythrocytes and is an important P. vivax vaccine candidate.

关键词： Plasmodium vivax GAMA erythrocyte binding Duffy negative sialic acid-independent vaccine candidate

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Journal of Thermal Science 2011年第6期20卷 510-515页

作者： Ju-Hyun Kim Won-taek Choi Minsub han School of Mechanical System Engineering University of Incheon Araytech IncheonKorea

We simulated the heat transfer phenomena of the heating module that is primarily based on the radiant energy in the near-infra-red(NIR) *** the module,the power emitted by the lamp filament is distributed to the lamp glass,reflector,and the target medium,which are cooled by an air *** radiant heat transfer is simulated by using the ray-tracing scheme,in which the spectral characteristics of the emission and the materials are *** heat transport from the lamp glass to the cooling air is analyzed by using the finite volume *** the lamp-filament temperature rises in the range of 3000-3400K,the NIR radiant power on the target medium ***,the lamp-glass temperature also rises,and the proportion of the NIR power to the entire radiation has a peak in the temperature *** spectral distributions of the absorbed energies in all the components in the module are highly non-uniform,and a monochromatic model of the radiant heat transfer may result in a significant discrepancy.

关键词：辐射能量红外加热光谱特性模块玻璃化温度辐射传热模型性能近红外线

Two-photon interference between continuous-wave coherent photons temporally separated by a day

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Photonics Research 2020年第3期8卷 338-342页

作者： DANBI KIM JIHO PARK taek JEONG HEONOH KIM han SEB MOON Department of Physics Pusan National UniversityGeumjeong-GuBusan 46241South Korea

An understanding of the phenomenon of light interference forms the kernel underlying the discovery of the nature of light from the viewpoints of both classical physics and quantum *** we report on two-photon interference with temporally separated continuous-wave coherent photons by using a temporal post-selection method with an arbitrary time *** the temporal separation of a day between the photons is considerably longer than the coherence time of the light source,we observe the Hong–Ou–Mandel(HOM)interference of the pairwise two-photon ***,we experimentally demonstrate the HOM interference observed in one of the interferometer-output modes by using only one single-photon detector for a large temporal separation.

关键词： separated coherent photon