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초음파 분무 열 분해법을 통해 제조된 불소 도핑 된 주석 산화물 나노 입자의 전기화학적 특성
이도영,이정욱,안건형,류도형,안효진,Lee, Do-Young,Lee, Jung-Wook,An, Geon-Hyoung,Riu, Doh-Hyung,Ahn, Hyo-Jin 한국재료학회 2016 한국재료학회지 Vol.26 No.5
Fluorine-doped tin oxide (FTO) nanoparticles have been successfully synthesized using ultrasonic spray pyrolysis. The morphologies, crystal structures, chemical bonding states, and electrochemical properties of the nanoparticles are investigated. The FTO nanoparticles show uniform morphology and size distribution in the range of 6-10 nm. The FTO nanoparticles exhibit excellent electrochemical performance with high discharge specific capacity and good cycling stability ($620mAhg^{-1}$ capacity retention up to 50 cycles), as well as excellent high-rate performance ($250mAhg^{-1}$ at $700mAg^{-1}$) compared to that of commercial $SnO_2$. The improved electrochemical performance can be explained by two main effects. First, the excellent cycling stability with high discharge capacity is attributed to the nano-sized FTO particles, which are related to the increased electrochemical active area between the electrode and electrolyte. Second, the superb high-rate performance and the excellent cycling stability are ascribed to the increased electrical conductivity, which results from the introduction of fluorine doping in $SnO_2$. This noble electrode structure can provide powerful potential anode materials for high-performance lithiumion batteries.
오소원,이도영,김보해,김광현,김유경,정영호,Oh, So Won,Lee, Doh Young,Kim, Bo Hae,Kim, Kwang Hyun,Kim, Yu Kyeong,Jung, Young Ho The Korean Society for Head and Neck Oncology 2018 대한두경부 종양학회지 Vol.34 No.1
Background/Objectives: This study aimed to evaluate the changes of uptake around the sternoclavicular joint (SCJ) according to 18F-FDG PET images in patients with head and neck cancer who underwent neck dissection. Materials & Methods: Retrospectively, the medical records of patients who received selective or comprehensive neck dissection were reviewed. Preoperative and 1-year postoperative 18F-FDG PET images, if available, were analyzed by nuclear medicine physicians in both qualitative and quantitative manners. Correlation between the changes of uptake around SCJ and perioperative data were statistically analyzed. Results: Thirty-seven patients satisfying the inclusion criteria were enrolled. Seven patients with increased uptake around SCJ on 1-year postoperative 18F-FDG PET showed a correlation with radical or comprehensive neck dissection, accessory nerve sacrifice, and high postoperative SUVmax. When 20 patients with increased uptake around SCJ according to quantitative measurement were compared with other patients without increased uptake, no parameter was significantly different, except postoperative SUVmax. Bivariate logistic regression analysis revealed that the clinical symptom (shoulder or sternal pain) was significantly correlated with the extent of neck dissection (OR 0.227, CI 0.053-0.966, p=0.045) and spinal accessory nerve sacrifice (OR 13.500, CI 1.189-153.331, p=0.036). Conclusions: Increased uptake around SCJ on 1-year postoperative 18 F-FDG PET was correlated with either the radical or comprehensive procedure, as well as with accessory nerve sacrifice. This suggests that subjective analysis of 18F-FDG PET can be used to detect subclinical shoulder instability.
성대용종환자에서 후두미세수술시에 수술부위에 Triamcinolone 국소주입이 음성에 미치는 영향에 대한 연구
유준,오경호,윤희철,이도영,우정수,백승국,정광윤,권순영,Yoo, Jun,Oh, Kyung Ho,Yoon, Hee Chul,Lee, Doh Young,Woo, Jeung soo,Baek, Seung Kuk,Jung, Kwang Yoon,Kwon, Soon Young 대한후두음성언어의학회 2015 대한후두음성언어의학회지 Vol.26 No.2
Background and Objective : Laryngeal microscopic surgery (LMS) is popular method to treat for vocal polyp. There is not always the improvement of the voice after operation. Many methods have been developed for better outcome of the surgery. The purpose of this study is to investigate the effect of the triamcinolone injection at vocal cord during LMS. Materials and Methods : The medical records of 28 patients, received LMS under diagnosis of vocal polyp, were retrospectively reviewed. The patients were divided into two groups depending on whether triamcinolone injected or not (case group : Triamcinolone-injected group, control group : Triamcinolone-not injected group). The quality of voice was evaluated by GRBAS scale, fundamental frequency (Fo), jitter, shimmer and NHR (Noise to harmonic ratio) at previous operation, 4 weeks after operation, 8 weeks after operation. Each voice analysis factor was compared between case group and control group by Independent t-test. Results : The mean differences of each voice analysis factor. The mean difference of Jitter, Shimmer, NHR in case group were lower than in control group, and mean difference of GRBAS scale in case group were higher than in control group. These differences were not significant (p>0.05). Conclusion : Though there was a tendency of better voice outcome in patients of triamcinolone-injection, it may not be concluded that the triamcinolone injection is helpful for better voice outcome in surgery of vocal polyp due to statistical insignificance.
성대에서 발견된 재발성 T세포 림프종에 대한 증례 보고
강가람(Karam Kang),최인학(In Hak Choi),이도영(Doh Young Lee),백승국(Seung-Kuk Baek),정광윤(Kwang Yoon Jung) 대한두경부종양학회 2017 대한두경부 종양학회지 Vol.33 No.2
Background. Lymphoma of the vocal fold is extremely rare due to low lymphoid content in the larynx. To date, fewer than 100 cases of laryngeal lymphoma have been reported; however, none of these literatures are concerned about exclusive laryngeal involvement of recurred lymphoma which initially appeared in other body sites. Specific consensus about management for these patients yet to exist, due to its rare occurrence; however, the main modality of treatment is chemotherapy alone or in combination with radiation therapy. Case. Herein, we report a case of a 51-year-old female patient who had recurrent T-cell lymphoma developing in bilateral vocal folds. The patient was originally diagnosed of T-cell lymphoma in right colic flexure 10 years ago, and was cured by chemotherapy. Immunohistochemical stain revealed the histologic type of recurred tumor in the vocal folds that are identical to the previously cured lymphoma. Conclusion. To the best of our knowledge, this was the first case that recurrent lymphoma occurred solely in the vocal folds. Despite its rarity, lymphoma should be put in the index of suspicion among those patients with decreased vocal fold mucosal wave without definite vocal fold mass who had a history of cured lymphoma.
고령친화 보행환경에 대한 고령자 만족도 및 요구에 대한 연구
권현주(Kwon, Hyun Joo),오찬옥(Oh, Chan-Ohk),김수영(Kim, Soo-Young),이재정(Lee, Jae-Jung),이도영(Lee, Doh-Yeong) 한국실내디자인학회 2019 한국실내디자인학회 학술대회논문집 Vol.21 No.3
The purpose of this study was to identify the senior’s environmental satisfaction and needs on the age-friendly walking environment based on WHO age-friendly city guidelines. In-depth interviews were conducted targeting seniors aged 65 years and older living in Busan, Republic of Korea (n = 20). The results showed that participants were more likely to satisfied with the pedestrian roads, crosswalks. However, they were less likely to satisfied with outdoor seating, public toilets, elevators in subway stations, bus stops and green spaces. Participants suggested specific needs and ideas for the age-friendly walking environment. The significance of this study was to propose age-friendly walking environment directions for the increasing number of Korean senior population.