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Won, Hyun Kyu,Jeon, Hyon Sun,Han, Hee,Lee, Seung Jung,Jung, Byung Heon Institute of Forest Science 2017 Journal of Forest Science Vol.33 No.4
This study was aimed to analyze the increased forestry incomes by combining timber production and wood processing, which is one of 6th industrialization types in Korean forestry. The selected household has been engaged in forestry for two generations and they produce timber and associated wood products in their own facility. The wood products include dimension lumber, interior wood material, cutting board, and cube chips, the household also utilize logging and sawmill residues as well as seed and seedlings as by-products. Incomes and expenses that have been incurred on individual processes of the sequential timber production and wood processing were surveyed, and we analyzed the economic outcomes of entire business. The results of this study indicate that the gross income of the household is 122.3 million Korean won and the net income is 93.6 million Korean won. The net income of the household is approximately 2.8 times higher than the average net income of whole households in the forestry of Korea in 2016, which is approximately 4.3 times higher than that of households that have been particularly engaged in timber production over the country. We found that the 6th industrialization by combining the two sequential processes creates approximately 3.2 times as much added value compared to the case relying on timber production only.
Hyun Kyu Won,Hyon Sun Jeon,Hee Han,Seung Jung Lee,Byung Heon Jung 강원대학교 산림과학연구소 2017 Journal of Forest Science Vol.33 No.4
This study was aimed to analyze the increased forestry incomes by combining timber production and wood processing, which is one of 6th industrialization types in Korean forestry. The selected household has been engaged in forestry for two generations and they produce timber and associated wood products in their own facility. The wood products include dimension lumber, interior wood material, cutting board, and cube chips, the household also utilize logging and sawmill residues as well as seed and seedlings as by-products. Incomes and expenses that have been incurred on individual processes of the sequential timber production and wood processing were surveyed, and we analyzed the economic outcomes of entire business. The results of this study indicate that the gross income of the household is 122.3 million Korean won and the net income is 93.6 million Korean won. The net income of the household is approximately 2.8 times higher than the average net income of whole households in the forestry of Korea in 2016, which is approximately 4.3 times higher than that of households that have been particularly engaged in timber production over the country. We found that the 6th industrialization by combining the two sequential processes creates approximately 3.2 times as much added value compared to the case relying on timber production only.
전우선,정원지,김원제,남경원 國立 昌原大學校 産業技術硏究所 2000 産技硏論文集 Vol.14 No.-
HILS(Hardware In Loop Simulation) is an effective means of testing unmanned underwater vehicle under extreme operational conditions and a variety of operational environments. In order to verify the vehicle performance under time-varying pressure conditions, a reliable pressure simulator is vital to an integrated system for the HILS. This paper presents the results of design research for the pressure simulator using pneumatic pressure (nitrogen), a high speed solenoid valve and a PWM control method. The test and evaluation results of the pressure simulator show that the simulator can generate an appropriate level of desired pressure with an average error below 1m depth for time-varying pressure change conditions corresponding to vehicle dynamics. In addition, the levels of overshoot and vibration have been shown to be under the requirements of design specifications.
흰쥐에 있어서 피부노출 차단이 피부조직의 Xanthine Oxidase 활성에 미치는 영향
한선일,전태원,윤종국 대한의생명과학회 2000 Journal of biomedical laboratory sciences Vol.6 No.1
횐쥐에 있어서 피부의 공기차단이 피부조직의 xanthine oxidate (XO) 활성에 미치는 영향을 검토하고자 직경 46 mm, 높이 10 mm인 petri dish-shaped glass chamber에 순간접착제 (α-cyanoacrylate)를 이용하여 실험동물의 등 부위 피부조직에 부착시켜 10일간 공기의 접촉을 차단하였다. 공기 접촉 차단 5일째에 피부의 땀 축적량은 약 400 mg 정 도이었으나, 10일째 에는 약 25 mg으로 감소하였다. 5일간 피부차단 시 피부조직 중 XO활성은 대조군에 비해 증가하였으며,그 증가율은 chamber 내의 땀 축적량과 관련하여 10일간 피부차단군 보다 높게 나타났다. 5일간 피부차단 시 XO의 기질 농도 변화에 따른 반응 속도를 관찰한 결과, 대조군에 비해 V-max치가 높게 나타났다. 이상 실험 결과를 보아, 피부의 공기접촉 차단으로 피부조직 중 XO효소 활성이 증가된 것은 이 효소 단백 합성 유도에 기인되며, 이는 피부조직에서 oxygen free radical의 생성을 유도하여 외부 환경에 대한 방어장벽작용에 관여할 것으로 생각된다. To investigate an impact of skin occlusion on the dermal xanthine oxidase (XO) activity, the dorsal part in rats was covered with closed petri dish-shaped chamber, 46 mm in diameter and 10mm in height, which was made of glass. The crack between top of chamber and skin was sealed by an adhesive agent. After 5 days, the quantity of sweat accumulation was about 400 mg, whereas after 10 days that was decreased about to 25 mg. The 5 days skin occlusion showed the more increased activity of dermal XO compared with the control, and the increased ratio of enzyme activity to the control was higher than that of 10 days skin occlusion, with the increase being associated with sweat accumulation in chamber. Furthermore, the Vmax of dermal XO in 5 days skin occlusion was higher than that in the control. In conclusion, it may be hypothesized that the XO system may play an role for defence mechanism in dermal tissue.
김재홍,윤기범,박평원,김영진,전경민,김영태,김중환,곽호,구상완,송민석,유옥,지혜구,김동원,문상은,박영립,정승호,성범진,성순제,엄주용,황정열,이기홍,이주협,전태진 대한화학요법학회 1994 대한화학요법학회지 Vol.12 No.1
The prevalence of PPNG among pretreated gonorrhea cases isolated at the STD clinic of Choong-Ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1991, 123 strains of N.gonorrhoeae were isolated, among which 58(47.1%) were PPNG. In 1992, 98 starains of N.gonorrhoeae were isolated, among which 51(52.0%) were PPNG. In all, 109(49.3%) strains were found to be PPNG among 221 strains isolated between 1991-1992. The prevalence of PPNG in Seoul showed increased tendency till 1989, thereafter, it has been stationary or slightly decreasing.
알코올의 섭취가 흰쥐의 혈액과 간의 지질대사에 미치는 영향
이명숙,김영연,김효숙,김매하,전진순,서진숙,송선미,양영재,윤원손,이미라,이효영,정승현 誠信女子大學校 生活文化硏究所 2004 生活文化硏究 Vol.18 No.-
To investigate the effects of ethanol on the lipid metabolism in blood and liver, twenty one male Sprague Dawley rats had orally taken the 25% alcohol and 50% alcohol by 5g per Kg of weight during 3 weeks after the adjusting period. For the energy balance, 85% sucrose and 45% sucrose was added in control group and 25% alcohol group each. The weight was reduced by alcohol treatment according to the levels, otherwise the weight of liver and heart was little increased in alcohol groups rather than in control without significance. Moreover, RBC, WBC, hemoglobin and hematocrit were increased by alcohol treatment according to the levels without significance. Otherwise, adjusted bilirubin levels by 100g of weight was significantly increased by alcohol treatment dose dependently. Alcohol induced RBC degradation and increased circulated bilirubin because of liver damage. For blood lipid profiles, blood cholesterol was increased in 50% of alcohol group compared to that of 25% and control groups, otherwise, blood triglycerides (TG) was increased by 30% in 25% alcohol groups rather than in control but not significantly different. The hepatic lipid composition, cholesterol levels in alcohol treatment groups was lower than those in control. The hepatic TG was not influenced by alcohol treatment. The two reasons of decreasing hepatic lipids were suggested by 85% sucrose of control for energy balance more synthesized cholesterol and TG than those in 25 or 50% alcohol groups, and by cholesterol and TG could not be synthesized because of liver damage from alcohol.
차윤엽 ( Yun Yeop Cha ),고연석 ( Youn Seok Ko ),이정한 ( Jung Han Lee ),정원석 ( Won Suk Chung ),신병철 ( Byung Cheul Shin ),전찬용 ( Chan Yong Jeon ),고호연 ( Ho Yeon Go ),선승호 ( Seong Ho Sun ),장보형 ( Bo Hyoung Jang ),송윤경 한방재활의학과학회 2013 한방재활의학과학회지 Vol.23 No.2
Objectives : The purpose of this study is to explore the trends of Korean medical study on stress in the industrial worker. Methods : We received numbers of the studies about stress in the industrial worker from 6 Korean web databases, using key words such as ‘Industry AND Stress’, ‘Oriental medicine AND Stress’, ‘Worker AND Stress’, ‘Workplace AND Stress’. We received 12 research papers and they were analyzed and the journals, the authors, the contents of 3 classification of those research papers. Results : Among them, we had 6 reviews of Dept. of preventive medicine and Dept. of third medicine, college of Korean Medicine, Won-kwang University, and the rest of them were 6 reviews. We had 4 reviews of Korean Journal of Oriental Preventive Medical Society, 2 reviews of the Journal of Traditional Korean Medicine, 2 reviews of Journal of Oriental Neuropsychiatry and so on. According to the contents of reviews, we had 7 reviews of correlation of industrial worker and stress, 4 reviews of cause on the industrial worker’s stress and 1 case report. Conclusions : We reviewed the trends of Korean medical study on stress in the industrial worker. The stress in the industrial workers were related with the type of occupation, social psychology, drinking, smoking, the satisfaction of job, the harmony of organization.And we knew that the musculoskeletal pain was related to the industrial worker’s stress. In the future, abundant case studies, follow-up trials and RCTs should be done about the industrial worker’s stress.
The Development of Evidence-Based Guideline for Diagnosis and Management of Headache in Korea
Sun Mi Kim,Young-Hoon Ko,Seoyoung Yoon,Won Sub Kang,Hye-Geum Kim,Hye Youn Park,Cheolmin Shin,Yoo Hyun Um,Soyoung Youn,Jae-Hon Lee,Seung-Ho Jang,Sang Won Jeon,Hong Jun Jeon,Seockhoon Chung,Jae-Won Choi 대한신경정신의학회 2019 PSYCHIATRY INVESTIGATION Vol.16 No.3
Objective: We aimed to develop the clinical guideline for headache by the systematic review and synthesis of existing evidence-based guidelines. The purpose of developing the guideline was to improve the appropriateness of diagnosis and treatment of headache disorder, and consequently, to improve patients’ pain control and quality of life. The guideline broadly covers the differential diagnosis and treatment of tension-type headache, migraine, cluster headache, and medication-overuse headache. Methods: This is a methodological study based on the ADAPTE methodology, including a systematic review of the literature, quality assessment of the guidelines using the Appraisal of Clinical Guidelines for REsearch & Evaluation II (AGREE II) Instrument, as well as an external review using a Delphi technique. The inclusion criteria for systematic search were as follows: topic-relevant, up-to-date guidelines including evidence from within 5 years, evidence-based guidelines, guidelines written in English or Korean, and guidelines issued by academic institutions or government agencies. Results: We selected five guidelines and conducted their quality assessment using the AGREE II Instrument. As a result, one guideline was found to be eligible for adaptation. For 13 key questions, a total of 39 recommendations were proposed with the grading system and revised using the nominal group technique. Conclusion: Recommendations should be applied to actual clinical sites to achieve the ultimate goal of this guideline; therefore, follow-up activities, such as monitoring of guideline usage and assessment of applicability of the recommendations, should be performed in the future. Further assessment of the effectiveness of the guideline in Korea is needed.