[PA-0031] Insight of Haplotype Effect on the Candidate Genes Related to Preharvest Sprouting

Myeong-Hyeon Min(Myeong-Hyeon Min),Aye Aye Khaing(Aye Aye Khaing),Sang-Ho Chu(Sang-Ho Chu),Yong-Jin Park(Yong-Jin Park) 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-

Electromagnetic Vibration Analysis and Measurements of Double-Sided Axial-Flux Permanent Magnet Generator With Slotless Stator

Hyeon-Jae Shin,Jang-Young Choi,Yu-Seop Park,Min-Mo Koo,Seok-Myeong Jang,Hyungsuk Han IEEE 2014 IEEE transactions on magnetics Vol.50 No.11

<P>This paper examines the effects of the electromagnetic source on the vibration of a double-sided axial permanent magnet generator with a slotless stator depending on the ac and dc-load conditions. The slotless machine has no cogging torque. Most of the vibration originates from the torque ripple and axial force distributions, which result from the current load conditions. The 3-D finite element analysis results are compared with voltage, current, and torque measurements. The order tracking analysis of the vibration test data clearly demonstrates the dependence of the critical harmonics on the load conditions.</P>

A Study on the Fabrication and Comparison of the Phantom for CT Dose Measurements Using 3D Printer

Myeong-Seong Yoon,Seong-Hyeon Kang,Soon-Min Hong,Youngjin Lee,Dong-Koon Han 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.6

전산화 단층촬영 장치의 정 도관리 항목 중 하나인 환자 피폭선량 피폭 시험은 의료법 제38조 특수의료 장비 설치 및 운영에 따라 1년마다 측정을 시행하고 기록을 보관해야 한다. 선량 측정을 위해 사용되고 있는 CT-Dose 팬텀은 정확한 선량 측정이 가능하지만 가격이 비싸다는 단점이 있다. 따라서 본 연구를 통해 기존의 CT-Dose 팬텀을 3D프린터로 유사하게 제작하여 기존의 팬텀과 비교 분석하고 유용성을 알아보았다. 기존의 CT-Dose팬텀과 동일한 팬텀을 제작하기위해 PLA 필라멘트를 이용하여 FFF 방식의 3D프린터를 이용하였으며, CTDIw 값을 산출하기 위해 팬텀의 주변부와 중앙부에 이온챔버를 삽입하여 각 10번씩 측정 하였다. 측정결과 주변부는 CT-Dose팬텀 30.44 ± 0.31 mGy, 중앙부는 29.55 ± 0.34 mGy CTDIw값은 30.14 ± 0.30 mGy로 측정되었고, 3D프린터를 이용하여 제작된 팬텀은 주변부 30.59 ± 0.18 mGy, 중앙부 29.01 ± 0.04 mGy, CTDIw값은 30.06 ± 0.13 mGy로 측정되었다. SPSS 통계 프로그램의 Mann- Whiteney U-test를 사용하여 분석한 결과 중앙부의 결과 값은 통계적으로 유의한 차이가 있었지만 주변부와 CTDIw의 결과 값은 통계적으로 유의한 차이를 나타내지 않았다. 결론적으로, 3D프린터를 이용하여 제작된 팬텀으로 기존의 CT-Dose 팬텀과 유사한 선량측정 성능을 보였으며, 본 연구를 통해 3D프린터를 이용한 저비용의 팬텀 제작의 가능성을 확인할 수 있었다. Patient exposure dose exposure test, which is one of the items of accuracy control of Computed Tomography, conducts measurements every year based on the installation and operation of special medical equipment under Article 38 of the Medical Law , And keep records. The CT-Dose phantom used for dosimetry can accurately measure doses, but has the disadvantage of high price. Therefore, through this research, the existing CT - Dose phantom was similarly manufactured with a 3D printer and compared with the existing phantom to examine the usefulness. In order to produce the same phantom as the conventional CT-Dose phantom, a 3D printer of the FFF method is used by using a PLA filament, and in order to calculate the CTDIw value, Ion chambers were inserted into the central part and the central part, and measurements were made ten times each. Measurement results The CT-Dose phantom was measured at 30.44 ± 0.31 mGy in the periphery, 29.55 ± 0.34 mGy CTDIw value was measured at 30.14 ± 0.30 mGy in the center, and the phantom fabricated using the 3D printer was measured at the periphery 30.59 ± 0.18 mGy, the central part was 29.01 ± 0.04 mGy, and the CTDIw value was measured at 30.06 ± 0.13 mGy. Analysis using the Mann - Whiteney U-test of the SPSS statistical program showed that there was a statistically significant difference in the result values in the central part, but statistically significant differences were observed between the peripheral part and CTDIw results I did not show. In conclusion, even in the CT-Dose phantom made with a 3D printer, we showed dose measurement performance like existing CT-Dose phantom and confirmed the possibility of low-cost phantom production using 3D printer through this research did it.

A case of cataract surgery using phacoemulsification in a 12-year-old poodle

( Myeong-gon Kang ),( Dong-hyun Han ),( Sei-myoung Han ),( Eun-gyeom Jung ),( Gyeong-min Kim ),( Jae-hyeon Cho ),( Phil-ok Koh ),( Chung-kil Won ),( Chung-hui Kim ),( Dongbin Lee ) 한국동물위생학회 2022 한국동물위생학회지 (KOJVS) Vol.45 No.3

Cataracts occur commonly in older dogs, which can lead to partial or complete vision loss. In the present study, a 12-year-old male poodle presented for evaluation of ocular sinister (OS) cataract. This study was a clinical case report on the process of performing surgery using phacoemulsification (PHACO) and the problems that arise in patient diagnosed with OS cataract. In the oculus dexter (OD), the artificial eye was inserted because there was no electroretinography (ERG) response. In the OS, the ERG was 51.6 μV, so operation was performed because the visual pathway function remained. Slit-lamp biomicroscopy of the OS showed complete loss of vision as a hypermature cataract and that the lens was hardened. During the cataract surgery using PHACO, visco-elastic agents were used to maintain the shape of the eyeball, and the PHACO procedure took 3.13 minutes. The hardened lens and visco-elastic agents were removed from the eye through PHACO surgery, and the operation was completed by inserting an intraocular lens (IOL). As a result of managing IOP for 2 months after surgery, it remained stable at a maximum of 19 mmHg, and no postoperative ocular hypertension (POH) occurred. Currently, one year has passed since the operation, and the dog maintains its daily life with its left eye without any problems.

Boxed KOSPI

Myeong Hyeon Kim,Young Min Kim,Kisung Yang 한국재무학회 2019 한국재무학회 학술대회 Vol.2019 No.11

Korea Composite Stock Price Index (KOSPI) has been becalmed for ve years before 2017 due to its narrow movement, being continuously cited as \BOXPI" meanong boxed KOSPI. We endeavor to resolve the BOXPI phenomenon by as- sociating heterogeneities in sensitivity of sector portfolio indices to their devia- tions from the market index with fundamental valuations at the industry level and macroeconomic determinants at the aggregate level. To do so, we derive the theoretical stochastic dynamics of the sector indices capturing sector rotation strategies. Then we estimate the dynamic mean-reversion speed of sector portfolio indices to KOSPI. Finally, we investigate three possible hypotheses from the valu- ation, economic fundamental, and economic policy uncertainty perspectives. Our main nding is that nancial ratios, several macroeconomic properties of a small open economy and uncertainty proxies are proven to be the main determinants to explain the BOXPI. To be specic, the sector rotations turn out to be more sen- sitive to the market variables during the BOXPI period and comove tightly with the economic variables during the non-Boxed period. Our ndings have important implications for market practitioners.

Free radical scavenging and hepatoprotective actions of acorn extract against CCl4-induced hepatotoxicity

Min-Jae Lee(이민재),Ying-Shan Jin,Dong-Seok Sin,Hyun Im,Seong-Il Heo,Wong Han,Ji-Yae Song,Myeong-Hyeon Wang 한국실험동물학회 2005 한국실험동물학회 학술발표대회 논문집 Vol.2005 No.-

A case of eczema herpeticum in mycosis fungoides

( Myeong Hyeon Yang ),( Seol Hwa Seong ),( Ji Yun Jang ),( Min Soo Jang ),( Kee Suck Suh ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1

Eczema herpeticum (EH), also known as Kaposi's varicelliform eruption, is characterized by disseminated papulovesicular eruption caused by a herpes simplex virus infection superimposed on a pre-existing dermatosis. The eruption usually occurs in individuals with atopic dermatitis or other pre-existing dermatosis such as Darier's disease, pemphigus foliaceus, and ichthyosis vulgaris. Mycosis fungoides (MF) is the most frequent manifestation of cutaneous T cell lymphoma but its cause and pathophysiology remain unclear. Herpes virus infection occurs not uncommonly in MF patients. However, only a few MF patients with EH have been described. A 58-year-old male presented with erythematous patches and plaques on the face. Two years ago, he was diagnosed with MF stage IIA and he had been receiving treatment including oral retinoid and ultraviolet A-1 therapy. Because the patient suffered from severe pruritus and his lesions had worsened, he was started to treat with topical imiquimod 5% cream 3 times weekly. After applying topical imiquimod 12 times, painful edematous plaques developed on his face. After 3 days, grouped vesicles and erosions developed in the erythematous areas of the face. Tzanck’s smear from a vesicle on his face showed multinucleated giant cells. The diagnosis of EH was thus made. The patient was treated with valacyclovir (3,000 mg/day) for 7 days and the lesion was completely resolved. Herein, we report a case of EH in MF.

P224 Association of lichen planus and hepatitis C virus infection in the Busan, Korea

( Myeong Hyeon Yang ),( Ji Yun Jang ),( Joon Hee Kim ),( Kang Hoon Lee ),( Hyun Hwangbo ),( Min Soo Jang ),( Kee Suck Suh ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.2

<div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div> Background: Lichen planus (LP) is a chronic inflammatory mucocutaneous disease and its association with hepatitis C virus (HCV) infection has been suggested in many studies. But reported prevalence of HCV infection in patients with LP tends to appear wide international variable between 0 and 70%. Objectives: The purpose of this study is to assess the prevalence of HCV infection in patients with LP in Busan, Korea and association between the two diseases. Methods: We reviewed medical records of 65 patients of LP, who lived in Busan, at our department of dermatology from May 1992 to April 2016. We investigated medical history, clinical, and laboratory findings including anti-HCV antibody and HCV RNA via reverse transcription-polymerase chain reaction (RT-PCR) for evaluation of HCV infection and liver function test (LFT). Results: Six patients (9.2%) were positive for anti-HCV antibody and all of them were confirmed with RT-PCR. Percentage of HCV infection among 65 patients of LP in this study was higher than that among adult in Busan (1.1%). Two patients (3.1%) were positive for hepatitis B surface antigen. Abnormal values in LFT were observed in 16 patients (24.6%) and liver diseases were observed in 7 patients (10.8%). Other associated diseases were hypertension, diabetes mellitus, and cardiac disease. Conclusion: LP is associated with HCV infection and it would be necessary to investigate HCV infection and liver disease in the LP patients.

Leveraging GWAS to Decipher the Genomic Basis of Seed Dormancy and Pre-Harvest Sprouting in rice

Myeong-Hyeon Min,Sang-Ho Chu,Bhagwat Nawade,Yong-Jin Park 한국육종학회 2023 한국육종학회 공동학술발표집 Vol.2023 No.-

Histopathologic Finding of Perieschar Lesions in Tsutsugamushi Disease Shows Lymphocytic Vasculitis Mimicking Angiocentric Lymphoma

( Min Soo Jang ),( Jong Bin Park ),( Kang Hoon Lee ),( Ji Yun Jang ),( Myeong Hyeon Yang ),( Joon Hee Kim ),( Hyun Hwangbo ),( Taek Geun Lee ),( Kee Suck Suh ) 대한피부과학회 2018 Annals of Dermatology Vol.30 No.1

Background: Tsutsugamushi disease is an acute, febrile, infectious disease caused by Orientia tsutsugamushi. Several studies investigating the histopathologic findings of eschars in tsutsugamushi disease reported leukocytoclastic vasculitis and neutrophil infiltration as the major findings. However, these findings may result from secondary changes following tissue necrosis. The histopathologic findings of perieschar lesions may be important to understand the primary changes associated with tsutsugamushi disease. Objective: To investigate characteristic histopathologic features of perieschar lesions and suppose the mechanism of vascular pathophysiological changes associated with tsutsugamushi disease. Methods: We analyzed histopathological slides of perieschar lesions in 12 patients diagnosed with tsutsugamushi disease. Results: In the epidermis, exocytosis of mononuclear cells (75.0%) and basal vacuolar changes (66.7%) were frequent. In the dermis, perivascular, interstitial, and perineural mononuclear cell infiltration (100.0%, 83.3%, and 83.3%, respectively), as well as thrombosis (83.3%), atypical lymphocyte infiltration (91.7%), and mitotic figures (83.3%) were commonly seen. Lymphocytic vasculitis and mononuclear cell infiltration around eccrine glands were found in all cases, but eosinophil infiltration was only found in one patient (8.3%). However, the characteristic findings of eschar lesions, such as leukocytoclastic vasculitis and neutrophil infiltration, were not found in perieschar lesions. Conclusion: The major histopathologic findings in the perieschar lesions of tsutsugamushi disease were lymphocytic vasculitis and atypical lymphocytic infiltration, mimicking lymphoma. Therefore, we suggest that this lesion should be added to the list of pseudolymphomas. To observe these characteristic histopathologic features, we also recommend that skin biopsies should be performed on perieschar lesions, not eschar lesions. (Ann Dermatol 30(1) 29∼35, 2018)