H形鋼 보와 기둥 溶接 接合部의 力學的 擧動에 관한 硏究

金明鎭,朴鶴吉 동아대학교 공과대학 부설 한국자원개발연구소 1982 硏究報告 Vol.6 No.1

In the classical analysis of steel frames which is commenly used in this day, beams and columns are reduced to single lines, and they are assumed to be rigidly connected. It means that the beam-to-column connection "joint" is perfectly rigid. This study is to investigate the mechanical behavior of beam-to-column connections under symmetrical loading, which is of great importance in design and construction of multistory steel frames. This report is the result of experimental and analytical investigation into the mechanical behavior of connections both with and without stiffeness from testing connection types. The result represents the effective width of column web(Be), rotation capacity, ultimate strength, failure mechanism, steel-strain relationship, joint efficiency and stress concentration factor.

보안신뢰도, 보안태도, 지각된 보안이 인터넷뱅킹 보안의도에 미치는 영향에 관한 연구

최명길,김종기,강다연 釜山 大學校 經營 經濟 硏究所 2008 經營 經濟 硏究 Vol.27 No.2

SM20C 旋削時 加工條件 變化에 따른 칩 形狀에 관한 硏究

정태상,황광성,김명규,김길진,박영태 진주산업대학교 산업과학기술연구소 2007 산업과학기술연구소보 Vol.- No.14

This study was to look for cutting conditions which are safe, comfortable and contributable to the increase in productivity at the time in turning. The shape of chips while turning have a strong effect on cutting processing. If chips fail to be well controlled, systematic cutting is not possible by revolution of chips entangled with workpiece or damage of tool edges, and this causes problems threatening the safety of the operator. This study is designed to identify conditions which chips effectively controlled and able to treat properly, and the results are as follows: 1. Feed rate, which determined the shape of chips, was found to have a stronger impact on the shape of resulting chips than any other cutting condition. 2. When feed rate was 0.25mm or over, controlled chips(coil spring type) were produced under whatever cutting conditions. 3. When feed rate was 0.25mm or over and depth of cut was 1.0mm, well-controlled shorter coil type chips were produced at every spindle speed, which implied they were the most suitable cutting conditions. 4. Feed rate 0.2mm was found to be an unstable section where coil spring and linear mixed type chips were produced together, and as feed rate decreased, more linear chips beyond control were produced. 5. At the same spindle speed, as the diameter of the material became bigger, controlled chips were produced only when the depth of cut was reduced, and vice versa under feed rate 0.2mm. 6. At the same feed rate, the lower spindle speed was, the more stable chips were produced.

Identification and Antimicrobial Susceptibilities for Patients with Non-tuberculous Mycobacteria Infection in Jeju Island: Single-Center Retrospective Study

Kim Misun,Heo Sang Taek,Lee Jaechun,Lee Jong Hoo,Kim Miok,Kim Changhwan,Seong Gil Myeong,Kang Myeong Jin,Yoo Jeong Rae 대한감염학회 2024 Infection and Chemotherapy Vol.56 No.1

Background The distribution of species and characteristics of non-tuberculous mycobacteria (NTM) differ, and surveillance data for changes in antimicrobial susceptibilities of NTM is insufficient. This study analyzed the changes in antimicrobial susceptibility trends across NTM species and assessed the appropriateness of empirical antimicrobial drugs for NTM. Materials and Methods We retrospectively analyzed the clinical characteristics, including demographics, distribution of NTM species, antimicrobial drug susceptibilities, and outcomes, at a teaching hospital in Jeju Island from 2009 - 2022. Results Overall, 342 patients were included in the analysis; 93.0% were classified into the pulmonary group (PG) and 7.0% into the extrapulmonary group (EPG). The isolation rate of Mycobacterium avium was significantly higher in PG (36.8% vs. 0%, P = 0.001), while that of Mycobacterium fortuitum was significantly higher in EPG (4.5% vs. 31.3%, P = 0.001). The antimicrobial susceptibility rate is higher against clarithromycin (89.9%) and amikacin (83.3%) and lower against rifampin (54.7%) and ethambutol (28.1%). The susceptibility rate to clarithromycin was over 80%, but those to rifampin and ethambutol showed decreasing annual trends. Of the 162 patients who received empirical antimicrobial therapy, actual antimicrobial susceptibility rates were high (90.1%) using empirical macrolide, and relatively low using ethambutol and rifampin (28.0% and 58.8%, respectively). Conclusion This is the first study of analysis of the distribution, baseline characteristics, and antimicrobial susceptibility of isolated NTM species in pulmonary and extrapulmonary patients in Jeju Island over 10 years. Policies that continuously monitor changes in susceptibility rate are required to ensure effective treatment strategies. Background The distribution of species and characteristics of non-tuberculous mycobacteria (NTM) differ, and surveillance data for changes in antimicrobial susceptibilities of NTM is insufficient. This study analyzed the changes in antimicrobial susceptibility trends across NTM species and assessed the appropriateness of empirical antimicrobial drugs for NTM. Materials and Methods We retrospectively analyzed the clinical characteristics, including demographics, distribution of NTM species, antimicrobial drug susceptibilities, and outcomes, at a teaching hospital in Jeju Island from 2009 - 2022. Results Overall, 342 patients were included in the analysis; 93.0% were classified into the pulmonary group (PG) and 7.0% into the extrapulmonary group (EPG). The isolation rate of Mycobacterium avium was significantly higher in PG (36.8% vs. 0%, P = 0.001), while that of Mycobacterium fortuitum was significantly higher in EPG (4.5% vs. 31.3%, P = 0.001). The antimicrobial susceptibility rate is higher against clarithromycin (89.9%) and amikacin (83.3%) and lower against rifampin (54.7%) and ethambutol (28.1%). The susceptibility rate to clarithromycin was over 80%, but those to rifampin and ethambutol showed decreasing annual trends. Of the 162 patients who received empirical antimicrobial therapy, actual antimicrobial susceptibility rates were high (90.1%) using empirical macrolide, and relatively low using ethambutol and rifampin (28.0% and 58.8%, respectively). Conclusion This is the first study of analysis of the distribution, baseline characteristics, and antimicrobial susceptibility of isolated NTM species in pulmonary and extrapulmonary patients in Jeju Island over 10 years. Policies that continuously monitor changes in susceptibility rate are required to ensure effective treatment strategies.

A Study on the Activities of α-Amylase and Protease in Enzyme Foods and Enzyme-Shaped Foods

Myeong-Gil Kim,Moon-Seog Oh,Suk-Ho Kang,Han-Taek Kim,Mi-Hye Yoon,Jong-Bok Lee 한국식품영양과학회 2015 한국식품영양과학회 학술대회발표집 Vol.2015 No.8

갯기름나물 경엽생산을 위한 적정 유기질 비료 선발 및 시용효과 구명

Myeong Seok Kim,Ho Sub An,Gil Ja Kim,Yong Soon Kim,Jin Gyung Choi,Sook Jae Lee,Heung Gyu Park,Hae Ryoung Shin,Seong Il Kim,Young Guk Kim,Young Sup Ahn,Seon Woo Cha,Chan Sik Jeong 한국약용작물학회 2016 한국약용작물학술대회 발표집 Vol.2016 No.05

Background : The purpose of this study was to evaluate methods to high quality medicinal vegetables, thereby increasing farm income. This study investigated the effects of different organic fertilizer and applicated cultivation on stable foliage production in Peucedanum japonicum Thunberg. Methods and Results : method of application with organic fertilizer were conducted under nine condition compose to control(non application), N-P2O5-K2O (20-12-10)㎏․10 a−1, Hyphal incubation compost(HIC) applied at 851㎏․10 a−1, Hangawi organic compost(HOC) applied at 547㎏․10 a−1, Fermented mixed oil cake compost(FMOC) applied at 380㎏․10 a−1, 60% and 40% of basal fertilizer in March 12, top dressing were four application in April 12, May 12, June 13 and July 12, respectively. Sowing dates were March 23, 2015. Plants were spaced 15 ㎝ apart in rows 15 ㎝ apart with open cultivation. Conclusions : chemical fertilizers < hyphal incubation compost < hangawi organic compost < fermented mixed oil cake compost application, top dressing than 60% in order of 40% additional fertilizer, aerial part as a result were so many such amount of growth as number of leaf per plant, etc., Green leaf yields is untreated control plot (875 kg․10 a−1) compared to 12% from using chemical fertilizers, HIC application 18% higher, HOC application 20% higher, and FMOC application increased to 28% of the most.

식용 모싯잎 안정생산을 위한 적정 시비방법 구명

Myeong Seok Kim,Ho Sub An,Gil Ja Kim,Yong Soon Kim,Jin Gyung Choi,Dong Kwan Kim,Heung Gyu Park,Hyun Woo Kim,Seong Il Kim 한국약용작물학회 2017 한국약용작물학술대회 발표집 Vol.2017 No.05

Background : The purpose of this study was to evaluate methods to high quality food ramie rice cake, thereby increasing farm income. This study investigated the effects of different Split Application and Adapted Fertilizer Culture for Stable Production with Edible Leaf in Ramie (Boehmeria nivea L.). Methods and Results : Method of fertilizer application were conducted under three condition compose to standard application (N-P-K-Compost applied at 27-9-27-1,500 ㎏․ 10 a−1), 25% increased application (N-P-K-Compost applied at 34-11-34-1,500 ㎏․10 a−1), 50% increased application (N-P-K-Compost applied at 41-14-41-1,500 ㎏․ 10 a−1) cultivation. Compost and fused phosphate applied at 100% of basal fertilizer in March 25. The split application level of standard application (N-K) applied at 50% of basal fertilizer in March 25, 50% of top dressing were five times application (N-K) in May 4, July 5, September 5, October 5, 20% respectively. Transplanting with Yeongkwang varieties in April 12 by growing pot seedling for 35 days in 2011. Planting density were spaced 60 ㎝ apart in rows 25 ㎝ apart with rice straw cutting covered open cultivation. Plot design randomized block 3 repetition. Conclusion : Organic matter, available phosphate, K2O, CaO, and MgO of soil increased in all plots with the addition of fertilizers culture, specifically in 25% and 50% increased application. Growth characteristics by 50% of top dressing were five times application (N-K) in May 4, July 5, September 5, October 5, compared to standard application (N-K) applied at 100% basal fertilizer, aerial part as a result were so many such amount of growth as number of branch and leaf per plant, etc., Length, width of leaf and leaf colorimetry of aboveground part growth increment rising highest. Green leaf yields compared to standard fertilizer 100% application (1,344 kg․ 10 a−1). 25% and 50% increased application (N-K) applied at 50% basal fertilizer, 50% of top dressing were five times application increased by 9%, 17%. respectively.

갯기름나물 경엽생산을 위한 적정 녹비작물 선발 및 시용효과 구명

Myeong Seok Kim,Ho Sub An,Gil Ja Kim,Yong Soon Kim,Jin Gyung Choi,Heung Gyu Park,Hyun Woo Kim,Seong Il Kim,Young Guk Kim,Chun Geun Park,Jae Gi Chang 한국약용작물학회 2017 한국약용작물학술대회 발표집 Vol.2017 No.05

Background : The purpose of this study was to evaluate methods to high quality medicinal vegetables, thereby increasing farm income. This study investigated the effects of different green manures crop and application culture stable foliage production in Peucedanum japonicum Thunberg. Methods and Results : Method of application with green manure crop were conducted under four condition compose to control (non application), single cropping in barley, hairy vetch and mixed cropping in hairy vetch (60%) + barley (40%)culture. Sowing dates of green manure crop were October 14 in 2014. Transplanting with Jeonam Yeosu varieties in Junel 28 by growing pot seedling for 45 days in 2015. Method of application were standard application (N-P-K-Compost applied at 20-12-10-600 ㎏․10 a−1). Plants were spaced 10 ㎝ apart in rows 10 ㎝ apart with open cultivation. Conclusions : The utilization effect of nitrogen supplied by green manure crop was highest with the hairy vetch by 21.1% in single cropping and hairy vetch + barley by 29.8% in mixed cropping. Organic matter, available phosphate, K2O, CaO, and MgO of soil increased in plots with the mixed cropping hairy vetch + barley culture. Non application < barley < hairy vetch < hairy vetch + barley in mixed cropping, aerial part as a result were so many such amount of growth as number of leaf per plant, etc., green leaf yields is untreated control plot (1,876 kg․10 a−1) compared to 7% from using barley culture, hairy vetch culture 10% higher and hairy vetch + barley culture increased to 15% of the most.

A Study on the Content of Vitamins in Fortified Food

Myeong-Gil Kim,Young-Sug Kim,Young-Su Kim,Seong-Bong Lee,Kyong-Shin Ryu,Mi-Hye Yoon,Jong-Bok Lee 한국식품영양과학회 2014 한국식품영양과학회 학술대회발표집 Vol.2014 No.10

지치 GAP 지침설정을 위한 재배유형별 적정 파종시기 및 정식시기 구명

Myeong Seok Kim,Ho Sub An,Gil Ja Kim,Yong Soon Kim,Jin Gyung Choi,Heung Gyu Park,Hyun Woo Kim,Seong Il Kim,Young Guk Kim,Seon Woo Cha,Chan Sik Jeong 한국약용작물학회 2016 한국약용작물학술대회 발표집 Vol.2016 No.10

Background : The purpose of this study is to investigate the effect of the ridge and mulching cultivation and adapted sowing(planting)time in stable medicinal herbs production of Lithospermum erythrorhizon Siebold et Zuc. And it accomplished one’s purpose to GAP guide manual established standard method of cultivation technology, contribute to the enlargement of farm’s income. Methods and Results : Method of cultivation type with the ridge and covering material were conducted under two condition compose to open cultivation (level row : 120㎝ ridging, black polyethylene mulching) and plastic greenhouse cultivation (high row : 90㎝ ridging, non-woven fabric mulching). Sowing with Daehong varieties in April 17, transplanting July 25 by growing pot seedling for 40 days in 2015. Planting density were spaced 30㎝ apart in inter-rows 10 ㎝ apart intra-row. Fertilizing level of N-P-K-Compost (fermented mixed oil cake fertilizer) applied at 6-4-6-300 ㎏․10 a−1, 60% of basal fertilizer in March 14, 40% of top dressing were four times application in April 14 ~July 15. Plot design randomized block 3 repetition. Conclusions : Compared to level ridging on black polyethylene mulching open cultivation for growing plastic greenhouse with the high ridging non woven mulching cultivation, seed yields havesting 1.4 times, the dried roots yields increased in 0.7 times. Also, Growth characteristics by sowing time in April 16. compared to planting time in July 25. Length of stem and main root of above-ground, subterranean part growth increment rising highest. Seed and dried roots yields with increased by 71%, 30%. respectively.