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Yoon‑Jin Lee,Kwan‑Sik Park,Byoung Joon Baek,Kyong‑Ae Lee,Sang‑Han Lee 대한독성 유전단백체 학회 2020 Molecular & cellular toxicology Vol.16 No.1
Backgrounds Arctigenin derived from the seeds of Arctium lappa Linnaeus is known as an anticancer drug candidate by targeting various pathways involved in anticancer therapy. Methods Using 2D monolayer and 3D spheroid culture systems in nasal septum carcinoma RPMI-2650 cells, the effects of arctigenin and dexamethasone on cell viability, ROS levels, ATP level, mitochondrial function, apoptosis and necroptosis were examined. Results The combination treatment of both compounds induced strong cytotoxicity, accompanied by increases of sub-G0/ G1 peak, annexin V-PE-positive cells, and ROS levels, loss of mitochondrial membrane potential, and decrease of cellular ATP content. These changes were observed as simultaneous induction of DNA damage, apoptosis, and necroptosis. A series of changes by arctigenin and dexamethasone were efficiently restored by decreasing ROS levels or supplementing ATP. Treatment of 3D spheroids with arctigenin and dexamethasone decreased cell viability in the spheroids, but it was slightly resistant than cells under 2D conditions. In addition, this phenomenon was accompanied by an increase in mediators for both apoptosis and necroptosis. Conclusion Results of this study suggest that the apoptosis and necroptosis-inducing effects of arctigenin are associated with ATP depletion due to oxidative mitochondrial dysfunction.
서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)
김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1
In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.
서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)
김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2
Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.
윤문구,박준원,이승윤 건국대학교 산업기술연구원 1998 건국기술연구논문지 Vol.23 No.-
High speed fiber spinning of polyethylene terephthalate(PET) was simulated at take-up speed of 6000m/min utilizing generalized steady state governing equations of melt spinning and some other assumed relationship for structure formation. In the present paper, the effect of changes of quench air temperature on the spinning line were mainly discussed. Distance of necking point and stress from the spinneret was elongated when higher quench air temperature was applied. Changes of necking point and stress may affect the development of PET fiber structure in the high speed threadline.
이윤성,이숭덕,권오준 大韓法醫學會 1996 대한법의학회지 Vol.20 No.1
A rare case of fatal intratumoral hemorrhage in a cerebellar hemangioblastoma is described. A 320year-old soldier was presented with loss of consciousness of acute onset, followed by rapidly progressing coma. At autopsy it was shown that the brain was edematous and covered with basal subarachnoid hemorrhage, and well circumscribed cystic tumor was noted in cerebellum. The tumor involved the cerebellar vermis and the right hemisphere, protruding upward from the superior surface of the cerebellum. The cystic portion was filled with fresh blood clot. Histologic study confirmed the diagnosis of hemangioblastoma showing typical two components of large polygonal stromal cell and anastomosing capillary network.
Olanzapine 복용 이후 당뇨병 케톤산증이 발생한 정신분열병 환자
이중선,김진용,안준호,김창윤 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.1
The use of olanzapine has been associated with clinically significant hyperglycemia (exacerbation of existing diabetes, new-onset type 2 diabetes and diabetic ketoacidosis). We report a case of diabetic ketoacidosis (DKA) in 30-year-o1d male patient with schizophrenia who was on olanzapine. When he was admitted to the hospital because of DKA, he had been taking olanzapine for 43 months. 14 months before the admission, his fasting and 2 hour postprandial serum glucose levels were normal. He had no personal and family history of diabetes mellitus. He had no risk factor for diabetes mellitus except for obesity (body mass index : 39.2 kgW). He also hadno precipitating factors for DKA such as infection or myocardial infarction. Periodic monitoring for changes in serum glucose levels in patients taking olanzapine may be needed.
The Dynamic Controller Design of the Nuclear Steam Generator Water Level Control System
이윤준 濟州大學校 産業技術硏究所 1997 산업기술연구소논문집 Vol.8 No.1
The steam generator feedwater and level control system is designed by two steps of the feedwater control design and the feedback loop controller design. The feedwater servo system is designed by the optimal LQR/LQG approach and then is modified by the LTR method to recover the robustness. The plant characteristics are subject to change with the power variation and tnese dynamic properties are considered in the design of the feedback controller. All the designs are made in the continuous domain and are digitalized by applying the proper sampling period. The system is simulated for the two cases of power increase and decrease. From the results of simulation, it is found that the controller constants would rather be invariable during the power increase, while for the case of power decrease they should be changed with the power variation to keep the system stability.
이윤준 濟州大學校 工科大學 産業技術硏究所 1991 産業技術硏究報告 Vol.2 No.-
The steam generator water level is difficult to control at low power due to its reversed responses to the feedwater flow, which are well known as the shrink and swell phenomena. With regard to this problem a new control scheme has been studied by which the level transients could be kept within permissible ranges at low power. The relations between the various input conditions to steam generator and the level transients have been examined to be expressed in the form of process transfer functions. Analog filters have been incorporated to the process with proper control constants. This control scheme allows the prediction of level variation together with the corresponding feedwater rate and results in milder transients with good stabilities.
Study on the Automatization of the Steam Generator Water Level at Low Power
李潤俊 제주대학교 1990 논문집 Vol.31 No.-
원자력 발전소의 증기발생기는 열수력학적 특성에 의하여 저출력에서 수위의 조절이 매우 어려우며, 가동시와 같은 저출력에서 원자로 강제정지의 큰 원인이 되고 있어 경제성 및 안정성에 영향을 미치고 있다. 본고에서는 강제정지 감소 방안의 일환으로 수위 제어의 자동화 영역을 저출력에까지 확장하였으며, 이를 위해 우선 증기발생기의 모델을 수정하여 주요인자에 대한 증기발생기 수위의 거동을 파악하였으며, 이를 위해 우선 증기발생기의 모델을 수정하여 주요인자에 대한 증기발생기 수위의 거동을 파악하였다. 이들 열수력학적 거동을 전달함수형태로 근사시킨후 전체 제어 시스템의 안정도 및 제어특성을 살폈으며, 제어기의 상수를 출력별로 조절함으로써 자동화 영역이 저출력까지 확장될 수 있음을 보였다.
이호경,김상철,윤준선,백준홍 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1
The purpose of this study is to examine the theoretical concept and practical example of Social Overhead Capital(SOC) project based on development of nation the world. Also, the critical access is to find the way we can develop domestic SOC project underway in private and nationwide. Furthermore, anther access is to propose clearly how to utilize BOT, BTO in financial, technical, CM method focusing on more systematic and effective result.