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제2형 당뇨병환자에서 혈중 글루카곤 농도와 심혈관 질환 위험도의 관계
정우석,문재철,유소연,Jeong, Wooseok,Moon, Jaecheol,Yoo, Soyeon 제주대학교 의과학연구소 2020 The Journal of Medicine and Life Science Vol.17 No.2
Glucagon regulates glucose and fat metabolism as well as being involved in the production of ketone bodies. The new antidiabetic drug, a sodium-glucose co-transporter-2 inhibitor, increases glucagon, and reduces the risk of cardiovascular death and hospitalization due to heart failure. The presence of metabolic syndrome is an important risk factor for cardiovascular diseases(CVD) in type 2 diabetes(T2DM) patients. We, thus, investigated the association between glucagon levels and metabolic syndrome in T2DM patients. This cross-sectional study involved 317 T2DM patients. Fasting and postprandial (30 min after ingestion of a standard mixed meal) glucagon levels were measured. Metabolic syndrome was defined according to the criteria of the International Diabetes Federation. A multiple regression logistic analysis was employed for statistical evaluation. A total of 219 (69%) subjects had metabolic syndrome. The fasting and postprandial glucagon levels did not differ between the group with metabolic syndrome and the group without. Postprandial glucagon levels increased significantly with the increase in the number of metabolic syndrome components, but the fasting levels did not. However, a hierarchical logistic regression analysis revealed that the postprandial glucagon levels did not contribute significantly to metabolic syndrome even after adjusting for other covariates. Fasting and postprandial glucagon levels are not associated with metabolic syndrome in T2DM patients. However, further studies are needed to investigate the relationship between glucagon and cardiovascular risk in patients with T2DM.
진드기 백신 개발을 위한 기초연구(I) - 수용성 항원에 대한 면역반응에 관하여 -
정우석,강승원,최은진,윤용덕,Jeong, Woo-seog,Kang, Seung-won,Choi, Eun-jin,Yoon, Yong-dhuk 대한수의학회 1996 大韓獸醫學會誌 Vol.36 No.3
Haemaphysalis longiscornis is the common cattle tick of great economic importance in Korea. Chemical control using dips or sprays has been the traditional method of attempting to kill these ticks during the infestation period. However, the presence of resistant forms to chemical, the rising costs of acaricides and environmental problems have made it almost impossible to use these chemicals on a regular basis according to the pest problem. For this reason, vaccination against ticks and breeding for host resistance against ticks are being studied. In order to determine the common proteins and antigens according to developmental stages, SDS-PAGE and western blotting were performed. In SDS-PAGE 103.3kD and 98.3kD proteins were observed as common proteins, and these proteins were observed as common antigens in western blotting. Unimmunized rabbits were infestated three times with H longicornis. The weight of the second and the third engorged ticks were 0.153g and 0.104g respectively. This weight is 69% and 47% of the first engorged ticks weight respectively. Immunized rabbits by adult ticks antigen and control were infested with H longicornis. The control taked 3-4 days to fully engorge, but the immunized rabbits taked about 7 days. So adult tick antigen may be effective to render the immunity to host.
정우석(Useok Jeong),김종우(Jongwoo Kim),송대섭(Dae-Seob Song),조규진(Kyu-Jin Cho) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
This study focuses on the design and evaluation of control algorithm that is embedded on cycle ergometer for rehabilitation. The admittance control algorithm is developed for the safe, compliant and effective rehabilitation exercise. The control mode is consist of passive and active mode depending on how the user exerts force. The intensity of the exercise can be adjusted by changing the impedance parameter of the controller. A developed algorithm is tested on the cycle ergometer which is widely used for the rehabilitation of upper limb and lower limb. The results show that admittance control scheme can flexibly guide the limbs compared to speed or position control and can provide various intensity of exercise with several combination of the impedance parameters.
논벼 무경운재배의 온실가스 감축효과를 고려한 경제성 분석
정우석(U Seok Jeong),김성섭(Seong sup Kim),서상택(Sang taek Seo),김숙진(Sook jin Kim) 한국농식품정책학회 2017 농업경영정책연구 Vol.44 No.4
This study performed an economic analysis for no-till practice of paddy rice compared with traditional till practice of paddy rice. The effect of reducing greenhouse gas (GHG) emissions from soil and agricultural machinery was added to economic outcome of no-till practice. Experimental data of GHG and yield by practices were obtained from National Institute of Crop Science and partial budgeting method was adopted for the analysis. Results showed that GHG reduction from no-till practice was very large in soil compared with agricultural machinery. The economic outcome of no-till practice was larger than that of traditional till practice even when it did not contain GHG reduction effect. In addition, no-till practice showed positive economic performance regardless of the ownership for agricultural machinery. The results of this study are expected to be highly useful as legitimacy of policy support for no-till paddy rice practice.
고령화 사회에 대응한 도시형 노인용 코하우징의 단위평면 계획에 관한 연구
정우석(Jeong Woo-Suk),조한(Joh Hahn) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
The welfare of the aged is becoming one of the critical issues of our society. However, building industry has not catched up to the need of the aged in housing market yet. The goal of this study is to find the needs of aged people and propose alternative housing types which corresponds to aged people's changes in physical and psychological features. The physical and the psychological need of the aged people are analyzed and categorized according to the components of the barrier free design. The different senior housing plan types are compared to find the pros/cons of each housing types. With these comparison, the concept and the special quality of co-housing plan types are presented and each co-housing plan components are matched with the need of aged people according to the barrier free design to propose alternative senior co-housing unit plan.
정우석(U Seok Jeong),김성섭(Seongsup Kim) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.3
본 연구는 시설원예 농가의 작목 대안으로 망고 초밀식 화분재배 도입의 경제성을 평가하였다. 기본모형은 전남지역 대표 농가사례로 선정하고, 관행작목에 대한 시나리오를 설정하였다. 작목전환에 따른 경제성은 부분예산분석법을 활용하여 평가하였고, 생산 및 시장 여건을 고려한 민감도 분석 및 손익분기점을 제시하였다. 경제성 분석결과, 모든 관행작목에서 망고 도입에 따른 손실요인의 증가액보다 이익요인의 증가액이 더 크기 때문에 작목전환이 경제적인 것으로 나타났다. 또한 모든 관행작목에서 망고 도입의 경제성은 비용 항목의 변동보다 총수입의 변동에 더 민감한 반응을 보였다. 이익의 순변화가 양(+)의 값을 가지는 10a당 생산량과 kg당 농가수취가격은 기본모형이 각각 947kg과 16,600원으로 나타났고, 시나리오별 손익분기점은 파프리카가 1,097kg과 18,508원으로 가장 높았다. 시설참외는 609kg과 10,613원으로 가장 낮은 수준을 나타냈다. 농가사례 및 시나리오별로 제시된 예산 항목별 증감 방향과 증감액 정보는 개별 농가의 여건과 선호에 따른 작목선택의 상세 조건들을 제공한다. 특히, 농가사례의 절반 수준으로 나타난 시나리오별 손익분기점 분석결과는 생산 및 시장위험에 대응한 최소 목표치를 제시한 점에서 의의가 있다. This study evaluated the economic feasibility of facility farms according to the introduction of the ultra-high density pot cultivation (UHDPC) for mango. The basic model was selected as a representative farmhouse case in the Jeonnam region, and seven scenarios for conventional crops were tested. The economic feasibility of crop switching was analyzed through partial budget analysis (PBA). The PBA analysis results were supplemented by adding a sensitivity analysis and a break-even point (BEP) analysis. As a result of the analyses, it was found that crop conversion was economical because the increase in the profit coefficient was greater than the increase in the loss coefficient due to the introduction of mango for all conventional crops. The economics of introducing mango was more sensitive to changes in gross income than to changes in cost items. The results show the detailed conditions of crop selection according to the conditions and preferences of individual farms by presenting the direction of increase and decrease by budget item and information on the amount of increase or decrease. In particular, the BEP analysis result, which is about half of the farms case, is significant in that it presents the minimum target value according to production and market risks.