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The prognostic significance of percentage of tumour involvement according to disease risk group in men treated with radical prostatectomy

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Asian Journal of Andrology 2011年第6期13卷 828-832页

作者： Jong Jin Oh Sang Cheol Lee Chang Wook Jeong Cheol Yong yoon Seong Jin Jeong Sung Kyu Hong Seok-Soo Byun yoon kwan rho Gheeyoung Choe Sang Eun Lee Department of Urology Seoul National University Bundang Hospital Seongnam Kyunggi-do 463-707 Korea Department of Pathology Seoul National University Bundang Hospital Seongnam Kyunggi-do 463-707 Korea

We investigated the prognostic significance of percentage of tumour involvement （PTI） according to the clinicopathological features of prostate cancer among patients who underwent radical prostatectomy （RP）. A retrospective study of 534 patients who underwent RP between September 2003 and March 2008 without any neoadjuvant or adjuvant therapy was performed. The associations of PTI with various clinicopathological features and biochemical recurrence-free survival were examined via uni- and multivariate analyses. The predictive accuracy of the multivariate model was assessed with a receiver operating characteristics-derived area under the curve. PTI was demonstrated to be significantly associated with preoperative prostate-specific antigen （PSA） level （P=0.001）, pathological Gleason score （P〈0.001）, extraprostatic tumour extension （P〈0.001）, seminal vesicle invasion （P〈0.001） and positive surgical margin （P〈0.001） in univariate analyses. When patients were stratified into disease risk groups, PTI was an independent predictor of biochemical recurrence-free survival in multivariate analysis only among the low-risk group （P=0.033） but not the intermediate- （P=0.287） or the high-risk groups （P=0.828）. The addition of the PTI did not significantly increase the accuracy of the multivariate model devised for the prediction of biochemical recurrence-free survival among both total patients （P=-0.459） and the low-risk group （P=0.268）, respectively. In conclusion, although PTI appeared to be a more significant prognostic factor among patients with low-risk disease than among those with higher risk diseases, overall, the PTI may not provide additional prognostic information beyond what can already be obtained via established prognostic factors.

关键词： biochemical recurrence-free survival percentage of tumour involvement prognosis prostate cancer prostatectomy

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Geometric and physical configurations of meta-atoms for advanced metasurface holography

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InfoMat 2021年第7期3卷 739-754页

作者： Joohoon Kim Younghwan Yang Trevon Badloe Inki Kim Gwanho yoon Junsuk rho Department of Mechanical Engineering Pohang University of Science and TechnologyPohangSouth Korea Department of Manufacturing Systems and Design Engineering Seoul National University of Science and TechnologySeoulSouth Korea Department of Chemical Engineering Pohang University of Science and TechnologyPohangSouth Korea

Metasurfaces consisting of subwavelength structures,so-called meta-atoms,have steadily attracted considerable attention for advanced holography due to their advantages in terms of high-resolution holographic images,large field of view,and compact device *** contrast to conventional holographic displays using bulky conventional diffractive optical elements,metasurface holography enables arbitrary complex wavefront shaping with a much smaller *** this review,we classify metasurface holography according to the meta-atom design methodologies,which can further expand hologram *** describe light-matter interactions,particularly in metasurface systems,using the relevant the Jones matrix to rigorously explain modulations of the amplitude,phase,and polarization of *** different types of metaatoms are presented,and the corresponding achievable wavefronts that form the holographic images in the far-field are also *** a simple classification will give a straightforward approach to design and further realize advanced metasurface holographic devices.

关键词： Jones calculus meta-atom metahologram metamaterial metasurface

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Thermally-curable nanocomposite printing for the scalable manufacturing of dielectric metasurfaces

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Microsystems & Nanoengineering 2022年第4期8卷 73-80页

作者： Wonjoong Kim Gwanho yoon Joohoon Kim Heonyeong Jeong Yeseul Kim Hojung Choi Trevon Badloe Junsuk rho Heon Lee Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea Department of Mechanical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Department of Manufacturing Systems and Design Engineering Seoul National University of Science and TechnologySeoul 01811Republic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea POSCO-POSTECHRIST Convergence Research Center for Flat Optics and Metaphotonics Pohang 37673Republic of Korea National Institute of Nanomaterials Technology(NINT) Pohang 37673Republic of Korea

Metasurfaces consisting of artificially designed meta-atoms have been popularized recently due to their advantages of amplitude and phase of light ***,the electron beam lithography method for metasurface fabrication has high cost and low throughput,which results in a limitation for the fabrication of *** this study,nanocomposite printing technology is used to fabricate high-efficiency metasurfaces with low *** demonstrate the efficiency of the proposed fabrication method,a metahologram is designed and fabricated using a *** metahologram exhibits conversion efficiencies of 48%and 35%at wavelengths of 532 and 635 nm,*** nanocomposite is composed of polymers with nanoparticles,so durability tests are also performed to evaluate the effects of temperature and humidity on the *** test verifies that at temperatures below the glass transition temperature of the base resin,the nanostructures do not collapse,so the efficiency of the metasurfaces remains almost the *** surrounding humidity does not affect the nanostructures at ***,the durability of the nanocomposite metasurfaces can be further enhanced by replacing the base resin,and this nanocomposite printing method will facilitate practical metasurface use at low cost.

关键词： surfaces durability resin

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An Overview of Current Oriental Medicine Herbal Cancer Research in Korea

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Chinese Journal of Integrative Medicine 2011年第4期17卷 251-256页

作者： Jeungwon yoon Hwa-Seung Yoo Yeon-Weol Lee Chong-kwan Cho East-West Cancer Center Dunsan Oriental Medical Hospital of Daejeon UniversityDaejeonRepublic of Korea

Cancer is the number one cause of death in Korea with annual mortalities of 69 *** suggests one in every four Koreans will end up getting cancer at some point in their life *** these persistent threats,strive for cancer cure is continued. Ten years of Korea＇s oriental medicine herbal research on cancer have been reviewed. Researches between the years of 2000 and 2010 are analyzed in terms of their published year,study types,tested subjects,testing measures,cancer types,and *** the past ten years,cancer researches have blossomed from null to full in Korean peninsula, and further development is much anticipated in the next ten years to come.

关键词： oriental medicine herbal research cancer Korea

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Effects of core/shell volumetric ratio on the dielectric-temperature behavior of BaTiO_(3)

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Journal of Advanced Ceramics 2014年第1期3卷 76-82页

作者： Sang-Chae JEON Byung-Kwon yoon kwan-Hyeong KIM Suk-Joong L.KANG Materials Interface Laboratory Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology291 Daehak-roYuseong-gu Daejeon 305-701Korea LCR Division Samsung Electro-MechanicsSuwon 443-743Korea

Two sets of(Mg,Y)-doped BaTiO_(3)samples were prepared to investigate the effects of the core/shell volumetric ratio on the dielectric-temperature behavior of BaTiO3:one set with samples of the same grain size but different core sizes and the other with samples of the same core size but different shell *** microstructural variation of the samples was characterized and their dielectric properties were *** both sets of samples,the temperature stability of the dielectric properties was generally improved with a reduction of the volumetric shell ratio regardless of the grain and core *** existed,however,a limit of the reduction;for the studied range,shell thickness of one third of the core radius appeared to be an optimum thickness for the given amounts of *** was concluded that the volumetric shell ratio should be optimized so as not to exceed a specific limit,for our case two thirds of the grain volume,to secure temperature stability of the dielectric properties of BaTiO_(3).

关键词： barium titanate core/shell structure dielectric properties temperature stability

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Active pixel image sensor array for dual vision using large-area bilayer WS_(2)

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InfoMat 2024年第4期6卷 68-82页

作者： Arindam Bala Mayuri Sritharan Na Liu Muhammad Naqi Anamika Sen Gyuchull Han Hyun Yeol rho Youngki yoon Sunkook Kim School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySuwonRepublic of Korea Waterloo Institute for Nanotechnology(WIN) University of WaterlooWaterlooOntarioCanada Department of Electrical and Computer Engineering University of WaterlooWaterlooOntarioCanada

Transition metal dichalcogenides(TMDs)are a promising candidate for developing advanced sensors,particularly for day and night vision systems in vehicles,drones,and security *** traditional systems rely on separate sensors for different lighting conditions,TMDs can absorb light across a broad-spectrum *** this study,a dual vision active pixel image sensor array based on bilayer WS2 phototransistors was *** bilayer WS2 film was synthesized using a combined process of radio-frequency sputtering and chemical vapor *** WS2-based thin-film transistors(TFTs)exhibit high average mobility,excellent Ion/Ioff,and uniform electrical *** optoelectronic properties of the TFTs array exhibited consistent behavior and can detect visible to near-infrared light with the highest responsivity of 1821 A W1(at a wavelength of 405 nm)owing to the photogating ***,red,green,blue,and near-infrared image sensing capabilities of active pixel image sensor array utilizing light stencil projection were *** proposed image sensor array utilizing WS2 phototransistors has the potential to revolutionize the field of vision sensing,which could lead to a range of new opportunities in various applications,including night vision,pedestrian detection,various surveillance,and security systems.

关键词： dual vision image sensors infrared wavelength detection phototransistors thin-film transistor arrays transition metal dichalcogenides

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Survival Analysis of Stage Ⅳ Metastatic Gastric Cancer Patients Treated with HangAm-Plus

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Chinese Journal of Integrative Medicine 2014年第1期20卷 49-55页

作者： Jae-Woo Park Jeungwon yoon Chong-kwan Cho Yeon-Weol Lee Hwa-Seung Yoo East-West Cancer Center Dunsan Oriental Hospital of Daejeon University

Objective：To evaluate the efficacy of HangAm-Plus（HAP）on stageⅣmetastatic gastric cancer by analyzing the treated patients’overall survival ***：Following the study eligibility,overall survival and one year survival rate of 44 stageⅣmetastatic gastric cancer patients who visited EastWest Cancer Center（EWCC）were *** study consisted of two arms：HAP treatment only（n=18）and combined treatment of concurrent conventional chemotherapy and HAP（n=26）.Patient characteristics by gender,age,surgical intervention,Eastern Cooperative Oncology Group（ECOG）score,treatment duration（〈4 weeks or≥4 weeks）,and lines of the chemotherapy received were *** related side effects were also ***：The median survival of combined group was longer（10.0 months）than that of HAP group（5.1 months）.One-year survival rate of combined treatment group and HAP group was 38.5%±9.5%and 33.3%±11.1%,respectively（P〉0.05）.One-year survival rate of those received more and less than 4-week treatment was 57.1%±18.7%and 8.3%±8.0%,respectively（P=0.001）.Conclusions：The study supports the safety and potential efficacy of HAP treatment in prevention of chemo-related side effects for stageⅣmetastatic gastric cancer treated with conventional *** studies are needed to investigate and confirm the results before applying the treatment in clinical settings.

关键词： advanced gastric cancer supportive care Chinese materia medica Oriental medicine

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Integrated metasurfaces for re-envisioning a near-future disruptive optical platform

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Light(Science & Applications) 2023年第8期12卷 1467-1493页

作者： Younghwan Yang Junhwa Seong Minseok Choi Junkyeong Park Gyeongtae Kim Hongyoon Kim Junhyeon Jeong Chunghwan Jung Joohoon Kim Gyoseon Jeon Kyung-il Lee Dong Hyun yoon Junsuk rho Department of Mechanical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Research Institute of Industrial Science and Technology(RIST) Pohang 37673Republic of Korea POSCOPOSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics Pohang 37673Republic of Korea

Metasurfaces have been continuously garnering attention in both scientific and industrial fields,owing to their unprecedented wavefront manipulation capabilities using arranged subwavelength artificial *** date,research has mainly focused on the full control of electromagnetic characteristics,including polarization,phase,amplitude,and even ***,versatile possibilities of electromagnetic wave control have been achieved,yielding practical optical components such as metalenses,beam-steerers,metaholograms,and *** research is now focused on integrating the aforementioned metasurfaces with other standard optical components(e.g.,light-emitting diodes,charged-coupled devices,micro-electro-mechanical systems,liquid crystals,heaters,refractive optical elements,planar waveguides,optical fibers,etc.)for commercialization with miniaturization trends of optical ***,this review describes and classifies metasurface-integrated optical components,and subsequently discusses their promising applications with metasurface-integrated optical platforms including those of augmented/virtual reality,light detection and ranging,and *** conclusion,this review presents several challenges and prospects that are prevalent in the field in order to accelerate the commercialization of metasurfaces-integrated optical platforms.

关键词： optical polarization surfaces

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Current status and challenges in sentinel node navigation surgery for early gastric cancer

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Chinese Journal of Cancer Research 2017年第2期29卷 93-99页

作者： Bang Wool Eom Young-II Kim Hong Man yoon Soo-Jeong Cho Jong Yeul Lee Chan GyooKim Soo Jin Kim Ji yoon rho Seok Ki Kim Myeong-Cherl Kook Young-Woo Kim Keun Won center for gastric cancer national cancer centerrepublic of korea center for diagnostic oncology national cancer centerrepublic of korea

Although a number of feasibility studies for sentinel node （SN） concepts in gastric cancer have been conducted since 2000, there remains a debate regarding detailed detection techniques and oncological safety. Two important multicenter phase II clinical trials were performed in Japan that used different methods and reached different conclusions; one confirmed acceptable results with a false-negative rate of 7%, and the other showed an unacceptably high false-negative rate of 46.4%. The Sentinel Node Oriented Tailored Approach （SENORITA） trial is a multicenter randomized controlled phase 1/I trial being performed in Korea. Patient enrollment is now complete and the long-term results are currently awaited. Recently, an image-guided SN mapping technique using infrared ray/fluorescence was introduced. This method might be a promising technology because it allows the clear visualization of SNs. With regard to the primary tumor, the non-exposed endoscopic wall-inversion surgery technique and non-exposure endolaparoscopic full-thickness resection with simple suturing technique have been reported. These methods prevent abdominal infection and tumor seeding and can be good alternatives to conventional laparoscopic gastric wedge resection. For indications, SN navigation surgery can be extended to patients who underwent non-curative endoscopic resection. Although a few studies have been performed on these patients, sentinel concepts may be beneficial to patients as they omit the need for additional gastrectomy. SN navigation surgery can lead to actual organ-preserving surgery and plays a key role in improving the quality of life of patients with early gastric cancer in the future.

关键词： Sentinel node navigation surgery early gastric cancer SENORITA

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High Refractive Index Ti3O5 Films for Dielectric Metasurfaces

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Chinese Physics Letters 2017年第8期34卷 141-143页

作者： Sohail Abdul Jalil Mahreen Akram Gwanho yoon Ayesha Khalid Dasol Lee Niloufar Raeis-Hosseini Sunae So Inki Kim Qazi Salman Ahmed Junsuk rho Muhammad Qasim Mehmoo Department of Electrical Engineering Information Technology University of the Punjab Lahore 54000 Pakistan Department of Mechanical Engineering Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea Department of Chemical Engineering Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea Centre for Advanced Studies in Physics GCU Lahore 54000 Pakistan

Ti33O55 films are deposited with the help of an electron beam evaporator for their applications in metasurfaces. The film of subwavelength （632nm） thickness is deposited on a silicon substrate and annealed at 400℃. The ellipsometry result shows a high refractive index above 2.5 with the minimum absorption coefficient in the visible region, which is necessary for high efficiency of transparent metasurfaces. Atomic force microscopy analysis is employed to measure the roughness of the as-deposited films. It is seen from micrographs that the deposited films are very smooth with the minimum roughness to prevent scattering and absorption losses for metasurface devices. The absence of grains and cracks can be seen by scanning electron microscope analysis, which is favorable for electron beam lithography. Fourier transform infrared spectroscopy reveals the transmission and reflection obtained from the film deposited on glass substrates. The as-deposited film shows high transmission above 60%, which is in good agreement with metasurfaces.

关键词： High Refractive Index Ti3O5 Films for Dielectric Metasurfaces Ti

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