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콘크리트 구조물용 GFRP리바의 기계적 특성에 관한 연구
한길영,이동기,김성용,전상기,최종대,박준식 조선대학교 에너지.자원신기술연구소 2000 에너지·자원신기술연구소 논문지 Vol.22 No.2
In this paper was studied on the mechanical characteristics of Glass Fiber Reinforced Plastics(GFRP) of the steel bar it is to replace The advantage of FRP such as high strength low weight and chemical inertness or noncorrosiveness can be fully exploited. GFRP bar were successfully fabricated at 10mm nominal diameters and hollow types using a pultrusion method Tensile and bending specimens from this bar were tested and compared with behavior of GFRP rebar and steel bar.
螢光像 測定法으로 分析한 HUMACTBP2 遺傳座位에 대한 韓國人의 遺傳的 多樣性과 法醫學的 有用性
황적준,남용석,최하주,이혜린,한길로 大韓法醫學會 1997 대한법의학회지 Vol.21 No.1
The HUMACTBP2 locus was investigated to collect population genetic data in the Korean population and to evaluate the applicability for the forensic field. An Automatic fluorescent-based sequencer (377 automatic DNA sequencer, ABI) was used to detect amplified fragments of the HUMACTBP2 locus electrophoresed on 4% denaturing polyacrylamide sequencing gels. ACTBP2 allelic ladder consisting of different sizes of 18 alleles was constructed and employed as an internal size standard in combination with a GS-350 size standard for precision of allele-band sizing. By utilizing different fluorescent dyes, both the allelic ladders and samples were able to be analyzed in the same lane by 99% precision of allele-band sizing. Among the Korean population (n=224), 26 alleles in the range of 239-313 bp are determined. Allele No. 6 is found 45 times (0.100) which is mostly frequent, and the rest of allele is distributed with their relative frequency of 0.112-0.100. The comparison between observed and expected numbers of homozygous and heterozygous individuals confirms that ACTBP2 locus is in the state of Hardy-Weinberg equilibrium among the Korean population. The heterozygosity is 0.9389±0.0034(93.89%), and the power of discrimination)PD) and power of exclusion(PEX) are calculated to be 0.991(99.1%) and 0.890(89.0%), respectively, showing the high informativeness for individual identification. Thus, these results mean that the HUMACTBP2 locus can effectively be used for the forensic application.
崩積土의 風化度가 自然斜面의 進行性 崩壞에 미치는 影響
鄭斗永,崔吉烈,李廣俊 全北大學校 1990 論文集 Vol.32 No.-
This study is an investigation of the influence of weathering degree on progressive failure slope. The clay mineral is kaolinite in failure soil layer which distributed in Granite - Schist rock zone of the Mesozic era and the thick of it is less than 3mm in heavy weathered soils, and so the failure form is friction type. The failure layer is sandy soils which have limited influence elements in sliding movement, and so the failure type is collapse type and bed rock failure type. The relationship between Ig-loss and saturation degree is an inverse proportion in characteristics of failure soils, and the saturation degree in laboratory sliding model increase about 78% to 85% and the effective porosity is deduced in 28% to 35%. The steady pore pressure(+) which produced according to rainfall time have more effective elements under the influence of precedent rainfall or concentrating precipitation on pointed day than weathering condition of failure soils, because the heavy weathered layer and rock-cracking layer is non-development state.
Joon-Kook Kwon,Kyoung-Sub Park,Hyo-Gil Choi,Sun-Yi Lee,K. Bekhzod,Mi-Ran Hwang,Nam-Jun Kang 경상대학교 농업생명과학연구원 2013 농업생명과학연구 Vol.47 No.1
This experiment was carried out to determine the effect of different spectrum conversion greenhouse films (red, blue, red+blue) to changing microclimate and subsequent effect on growth and quality of lettuce (Lactuca sativa L.), tomato (Solanum lycopersicum L.), and melon (Cucumis melo L.) Transmission of PAR (photosynthetic active radiation, 400-700 nm) under red, blue, and blue+red (BR) films was higher by 7.2, 7.6, and 5.8%, respectively, as compared with control greenhouse film. Light transmission in the 300-1100 nm wave band was 91.6% and 91.3% under red and blue films, respectively, compared to 86.4% under control film. Mean daytime temperature in greenhouse was slightly higher in red and blue film and mean night time temperature was higher in BR film. There were no significant differences in relative humidity among the films. Number of leaves and plant fresh weight of lettuce were higher under BR film. Total number of marketable tomato fruits was greater under blue and BR film and fruit weight was heavier under red and blue film compared to control film. Under BR and red film melon fruit weight was increased by 140 g and 80 g respectively, as compared to control film. Sugar content in melon and tomato fruits was not affected by covering films.
최길순 ( Gil Soon Choi ),박준성 ( Joon Sung Park ),유수경 ( Su Kyong Yu ),박진선 ( Jin Sun Park ),강준구 ( Joon Koo Kang ),임남규 ( Nam Kyu Lim ),이명희 ( Myoung Hee Lee ),박해심 ( Hae Sim Park ),남동호 ( Dong Ho Nahm ) 대한천식알레르기학회 2007 천식 및 알레르기 Vol.27 No.3
Toxic epidermal necrolysis (TEN) is an uncommon but life-threatening condition. It is characterized by the rapidly progressive onset of widespread epidermal necrosis, resulting in flaccid bullae with epidermal sloughing and frequent involvement of the mucous membrane. Currently, there is no clinically proven effective therapeutic modality for TEN. There have been several uncontrolled studies reporting beneficial clinical efficacy of plasmapheresis in patients with TEN. We report a case of severe TEN which was successfully improved by plasmapheresis treatment. A 26-year-old male patient was admitted due to severe myalgia and sore mouth at 8 days after medication with ofloxacin and loxoprofen for 3 days after eye surgery. After admission, a high spiking fever and erythematous skin rashes on both palm and sole developed in this patient and his skin lesions subsequently progressed to generalized bullous skin lesions covering the whole body area with oropharyngeal ulceration and conjunctivitis. The patient was diagnosed with TEN and administered intravenous immunoglobulin (IVIG) for 3 days, but he did not improved. Then he received plasmapheresis treatment for 3 days. After the plasmapheresis treatment, the progression of epidermal detachment of the skin was stopped and no new lesions developed. His bullous skin lesions progressively resolved. (Korean J Asthma Allergy Clin Immunol 2007;27:195-199)
Hyo Gil Choi,Jae Han Lee,Byoung Yong Moon,Joon Kook Kwon,Gyeong Lee Choi,Seung Hwa Lee,Nam Jun Kang 경상대학교 농업생명과학연구원 2017 농업생명과학연구 Vol.51 No.4
This study was carried out to explore possibilities of cultivating horticultural crops in the air-dome greenhouse in comparison to the common iron-frame greenhouse as the standard. The levels of carbon dioxide and atmospheric pressure measured inside the air-dome greenhouse turned out to be higher than those measured inside the iron-frame greenhouse. Contrastingly, light intensity was relatively weaker inside the air-dome greenhouse due to the air-inflated double layers. Plants of melon and cherry tomato were cultivated from May 2 to August 12, 2016, respectively in the two greenhouses. For melon plants, growth in the air-dome greenhouse effectively increased fruit weight as well as trunk circumference compared to iron-frame greenhouse. Moreover, soluble sugar content of melon fruit was significantly higher when cultivated in the air-dome greenhouse. For cherry tomato plants, fruit yield of cherry tomato was significantly increased inside the air-dome greenhouse. Furthermore, it has been found that the air-dome greenhouse was considerably effective in shortening the growing period of melon and cherry tomato plants in comparison to the iron-frame greenhouse.
발아조건과 배지종류 및 양액 농도에 따른 식물공장 재배 청경채와 상추의 묘 생육특성
최효길(Hyo-Gil Choi),권준국(Joon-Kook Kwon),박경섭(Kyoung-Sub Park),강윤임(Yun-Im Kang),조명환(Myeong-Whan Cho),노일래(Il-Rae Rho),강남준(Nam-Jun Kang) (사)한국생물환경조절학회 2011 생물환경조절학회지 Vol.20 No.4
본 연구는 식물공장에서 청경채와 상추의 발아조건과 육묘배지 및 육묘 시 양액농도가 묘의 생육에 미치는 영향을 구명하고자 수행되었다. 청경채와 상추의 발아율은 광의 유무와 온도처리(15, 20, 25℃) 간에 유의적 차이가 없었으나, 육묘배지 간에는 우레탄스펀지의 경우 파종 전ㆍ후 수분관리 유ㆍ무에 따라 큰 차이를 보였다. 즉, 우레탄스펀지 배지에서 파종전ㆍ후 수분관리를 하지 않았을 경우 암면에 비해 발아율이 현저히 낮았으나, 수분관리를 해주었을 때에는 암면보다 발아율이 높았으며, 묘의 생육도 암면과 차이가 없었다. 그리고 청경채의 생체중은 EC 1.0dSㆍm?¹에서 1.5dSㆍm?¹에서보다 1.8배 무거웠고, 0.5dSㆍm?¹에서보다는 6배 무거웠다. 상추의 생체중 또한 EC 1.0dSㆍm?¹이 1.5dSㆍm?¹와 0.5dSㆍm?¹에 비해 1.7배와 3.5배 각각 무거웠다. This experiment was conducted to study the effects of germination condition, nursery media and nutrient concentration in plant factory on the growth characteristics of pak-choi and lettuce seedlings. The results showed that temperature (15, 20, 25℃) and light conditions (lighting and no lighting) had no significant effect on germination rate of pak-choi and lettuce, whereas the interaction of growing media (rockwool and urethane sponge) and moisture management before and after sowing had significant effect on germination percentage. In case of no moisture management before and after sowing, germination percentage was much higher in rockwool medium than urethane sponge medium. But germination percentage of urethane sponge was higher than that of rockwool with applying moisture before and after sowing. At the nutrient concentration of EC 1.0 dSㆍm?¹ the fresh weight of pak-choi was heavier than in EC 1.5 and 0.5 dSㆍm?¹ by 1.8 and 6.0 times, respectively. At the nutrient concentration of EC 1.0 dSㆍm?¹ the fresh weight of lettuce was also heavier than in EC 1.5 and 0.5 dSㆍm?¹ by 1.7 and 3.5 times, respectively.
Joon-Kook Kwon(권준국),Kyoung-Sub Park(박경섭),Hyo-Gil Choi(최효길),Sun-Yi Lee(이선이),K. Bekhzod(벡조드),Nam-Jun Kang(강남준) (사)한국생물환경조절학회 2012 생물환경조절학회지 Vol.21 No.4
본 연구는 비닐하우스 피복재인 폴리오레핀(PO)계 필름의 효과를 구명하고자 관행의 피복필름(PE + EVA)과 비교하여 피복재별 물리적 특성과 상추와 오이의 생육 및 수량을 검토하였다. 인장강도, 인열강도 등 피복재의 물리적 특성은 일반필름보다 PO필름이 우수하였다. 400~700 ㎚의 광합성유효광의 투과율은 일반필름에 비해 PO필름이 4.1% 높았고, 전체 광선투과율(300~1,100 ㎚)도 PO필름이 4.3% 높았다. 하우스 내의 주간 평균기온은 일반필름보다 PO필름이 1.5℃ 높았고, 야간 평균기온도 PO필름이 0.8℃ 높게 유지되었다. 주야간 상대습도는 필름 간에 유의적 차이가 없었다. 엽록소 함량은 오이의 경우 필름 간 유의적 차이는 없었으나 일반필름에 비해 PO필름이 엽록소 a가 약간 높았으며, 상추는 PO필름이 일반필름보다 유의하게 높았다. 수확기 오이 생육에 있어서 초장, 엽면적, 생체중 및 건물중 모두 일반필름보다 PO필름을 피복한 하우스에서 크고 무거웠다. 수확한 오이의 과실 수량은 일반필름에 비해 PO필름이 14.0% 높았고, 상추 수량도 일반필름보다 PO필름이 13.6% 높았다. This study evaluated the effect of polyolefine greenhouse covering film on growth of lettuce and cucumber. The growth of lettuce and cucumber plants under conventional film (polyethylene plus ethylenevinyl acetate, PE + EVA) and polyolefine (PO) film were evaluated in a greenhouse. The physical qualities of PO film, such as tensile strength and tear strength, were stronger than conventional PE + EVA film. PO film showed 4% higher transmission performance in photosynthetic active radiation (PAR) than PE + EVA film. The average day and night temperature in greenhouse under PO film were 1.5oC and 0.8oC higher but there was no significant difference in relative humidity compared with conventional film. Chlorophyll content of lettuce and cucumber plants grown under PO film were higher than conventional film. Growth characteristics; plant height, leaf area, fresh weight and dry weight of cucumber was shown better for PO film. The yields of cucumber and lettuce was increased 14.0% and 13.6% respectively, when the crops were grown under PO covering film greenhouse.