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공터키안을 동반한 쉬한 증후군에서 그레이보스 병이 병발된 2예
최윤종,정춘희,박의련,김홍승,신영구 대한내분비학회 1996 Endocrinology and metabolism Vol.11 No.4
The empty sella syndrome is characterized by obesity, frequent pregnancy, headache and high blood pressure, but its exact cause remains unknown. Usually the incomplete diaphragmatic sella has been considered as the cause of the empty sella syndrome, but some authors recently have suggested that the antipituitary antibody way be related to development of pituitary atrophy and the pituitary empty sella syndrome, and thus it may be clinically useful as screening test for the empty sella syndrome. We experienced two empty sella syndromes associated Graves disease and applied the antipituitary antibody as the diagnostic tool of the empty sella syndrome. But none of this two patients had antipituitary antibody and we report these cases with reviews of literatures. (J Kor Soc Endoerinol 11:517~522, 1996)
Fracture Analysis for Ceramic Disk with Semi-Elliptical Crack and Pore
최윤종,송문석,Yi-Jun Yoo,이준성 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.
Crack resistance is important to exam the structures destroyed under static and dynamic load as well as to the ceramic products under extreme mechanical and thermal load. But in addition to the metallic material, ceramic and ceramic composite materials have been pointed out as low resistance referred to a brittle materials form thermal impact. As destroyed ceramics are impossible to be restored, so the development of high toughness ceramics is required. To get high strength material design variables while keeping light weight, this study derives the modulus of elasticity for ceramic disk with elliptical crack pore and performs fracture behaviors assessment by applying the modulus of elasticity derived and MSST(Maximum Shear Stress Theory) techniques to compare with test data. As a result of assessment of fracture behavior based on the MSST, if stress is greater than fracture strength of material, it showed high probability of occurring of the shear fracture when fracture strength is 38 kgf.
G-protein coupled receptor 40 agonists as novel therapeutics for type 2 diabetes
최윤종,신동윤,이주연 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.4
With growing needs for new antidiabetic drugswhich are safe and effective alone or in combination withexisting drugs, G-protein coupled receptor 40 (GPR40) hasdrawn a considerable attention as a potential therapeutictarget for type 2 diabetes. As GPR40 agonist may offeradvantages to commonly used agents, by acting ambientglucose dependent manner which mechanistically leads toreduced risk of developing hypoglycemia. Since deorphanizationin 2003, development of small molecule GPR40agonists has been spurred by several research groups. There are a number of lead molecules targeting GPR40,and among these molecules TAK-875 (full agonist) andAMG 837 (partial agonist) advanced into clinical stage.
최윤종(Yunjong Choi),김홍성(Hongsung Kim),박정서(Jungseo Park),김문헌(Munheon Kim) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_1
This study introduced the bulk combustion systems instead of the conventional gasoline spark ignition system and diesel compression ignition system. To achieving both high efficiency, without ignition systems to the conventional single cylinder diesel engine, established the inlet-air heating and control systems for the heating and controlling of inlet-air.<br/> The lean limit of air-fuel ratio improved by the inlet-air heating with the compression ignition combustion systems' and the allowable air-fuel ratio extended to 63 when the temperature of the inlet-air was 170 ℃ and the engine speed 1000 rpm.<br/> The cycle maximum pressure and the brake mean effective pressure increased to proportional, when the air-fuel ratio was richer.<br/> The brake specific fuel consumptions increased largely at the air-fuel ratio was above 45 and affected strongly by the inlet-air heating temperature.<br/> The maximum brake thermal efficiency showed at the air-fuel ratio was 35 and decreased in case the leaner region and improved the higher inlet-air heating temperature.<br/> The maximum heat release rate increased in according to decreased and advanced the<br/> accurance period of the maximum heat release rate.<br/> Also, as showed the mass burned rate, the burning period shorted and established the rapid combustion in according to the air-fuel ratio decreasing.<br/>
간경변 환자에서 말초신경병증의 임상적 특성과 신경전도검사 소견
최윤종 ( Yeun Jong Choi ),백순구 ( Soon Koo Baik ),석기태 ( Ki Tae Suk ),김정민 ( Jung Min Kim ),지명관 ( Myeong Gwan Je ),김현수 ( Hyun Soo Kim ),이동기 ( Dong Ki Lee ),권상옥 ( Sang Ok Kwon ),박기철 ( Ki Chul Park ),이지용 ( Ji 대한소화기학회 2003 대한소화기학회지 Vol.41 No.6
Background/Aims: In liver cirrhosis, symptoms such as paraesthesia and numbness are associated with peripheral neuropathy (hepatic neuropathy). The prevalence and nerve conduction study (NCS) of hepatic neuropathy have not been reported yet in Korea. This prospective study was designed to evaluate the prevalence, clinical characteristics, and NCS of hepatic neuropathy, and to compare peripheral neuropathy of alcoholic cirrhosis with that of nonalcoholic cirrhosis. Methods: Seventy-three patients with liver cirrhosis underwent neurological evaluations including a history and neurological examinations relevant to the peripheral nervous system. NCS was performed in all subjects. Results: Peripheral neuropathy was found in 53.4% of the patients. Sensory neuropathy was observed more frequently than motor neuropathy on NCS. Overall, the pattern of neuropathy was axonal degeneration. There was no difference in the characteristics of peripheral neuropathy between the patients with alcoholic cirrhosis and the patients with nonalcoholic cirrhosis. Among 29 patients with neurologic symptom and sign, 22 patients (76%) showed an abnormality in NCS. Conclusions: The prevalence of peripheral neuropathy is 53.4%. This study suggests that symptoms such as numbness or paraesthesia in patients with cirrhosis are related to peripheral neuropathy. (Korean J Gastroenterol 2003;41:486-492)