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채건식,손인호,이수대 경남대학교 환경문제연구소 1982 환경연구 Vol.4 No.-
In our study, the noise level were computed by the computer simulation method at the hospital and the schools located near the main street in Masan City. The noise level chart was attained and compared with the values measured by a sound level meter. The values were very similar to the those computed by the computer simulation method. The noise values of one hospital and six school areas in this study were lower than the international value of criteria for city(55dB), but three hospital and eight school areas higher than 55dB.
이수대,채건식,김영국,설정식 慶南大學校 附設 基礎科學硏究所 1989 硏究論文集 Vol.1 No.-
The temperature dependence of the ultrasonic velocity of 10 MHz and the absorption coefficient in the 10-30MHz range by the pulse echo method were determined in lead germanate single crystal. The velocity of longitudinal 10 MHz ultrasound along the c axis changed anomalously at the phase transition point and the jump was approximately 50m/sec. Near Curie point, the relaxation time and the kinetic coefficient of electric polarization from the Landau-Khalatnikov theory were calculated as ?? sec and ??, respectively. At room temperature, the viscosity tensor were measured as, ?? in the MKS units.
Al/p - Si MIS 형 태양전지의 물성에 관한 연구
이수대,채건식,설정식,김영국,김일홍 慶南大學校 附設 基礎科學硏究所 1989 硏究論文集 Vol.1 No.-
The metal-thin insulating film-semiconductor structure is currently receiving much attention in solar cell studies. In this a MIS solar cell consisting of aluminum on single and poly silicon with an interfacial oxide layer(∼20Å) have been fabricated by vacuum evaporation method and found a good reproducibility. Recent studies show the importance of surface and interfacial oxide thickness. An interfacial of 20∼30Å is optimum and may be achieved by furnace heating to 600℃ in 800cc/min O₂flow. These cells have good rectification with forward and reverse voltage under dark condition. The best Al/p-Si Si solar cell has an open circuit voltage Voc=0.4V, short circuit current density Isc=30mA/㎠, fill factor FF=0.58 and conversion efficiency η=10% for single crystal, and Voc=0.33 V, Isc=30mA/㎠, FF=0.49 and η=5% for poly crystalline silicon substrates for 70mA/㎠ irradiation of AM₂.
Putative association of RUNX1 polymorphisms with IgE levels in a Korean population
채수천,박병래,박춘식,류하정,양윤식,이수옥,최유현,김은미,우수택,김용훈,김가경,오범석,정헌택,김규찬,신형두 생화학분자생물학회 2006 Experimental and molecular medicine Vol.38 No.5
RUNX1, a member of the runt domain gene family of transcription factors, encodes a heterodimeric transcription factor and regulates the expression of hematopoiesis and myeloid differentiation. RUNX1 has been one of the target genes for research into various autoimmune disea-ses due to its properties as a transcription factor and functional distribution for chromosomal trans-location. In an effort to identify additional gene polymorphisms in which variants have been implicated in asthma, we investigated the genetic polymorphisms in RUNX1 to evaluate it as a potential candidate gene for a host genetic study of asthma and IgE production. We identified 19 sequence variants by direct DNA sequencing in 24 individuals of which four common variants were selected for genotyping in our asthma cohort (1,055 asthmatic patients, 384 normal controls). Using logistic regression analysis for association with the risk of asthma, while controlling for age, gender, and smoking status as of asthma were detected. However, two poly-morphisms in the promoter region (-2084G> C and -1282G>A) showed a marginal association with total IgE levels (0.03 and 0.03 in recessive models, respectively). Our findings suggest that poly-morphisms in RUNX1 might be one of the genetic factors for the regulation of IgE production
이수행,최성환,박정지,이광남,채순석,원준희 경기연구원 2021 정책연구 Vol.- No.-
The positive note that has been obvious at Leisure Marine Industry in recent years has had a visible impact on leisure marine boats market. The demand on the leisure marine market is rapidly increasing with the change of hobbies and lifestyle and with increments of GNI. South Korea"s per capita income has surpassed 30,000 U.S. dollars. Changing of consumer interests are continuing to re-shape the market segment and undercut the traditional business models in terms of boat ownership and experience through the boat. South Korea has a relatively weak base in leisure marine boating, despite their strong industrial base of maritime. The Leisure Marine Boats industry is an important part of the emerging new section of maritime industry and it is important to getting much support from governments and Gyeonggi-Do. Despite the importance of leisure marine boats industry recognized by the people, government is in shortage of major data on the sector. Korean shipbuilders do not have experience in leisure marine boats, but they have competencies in shipbuilding and experience in manufacture. The Gyeonggi-Do is a major population center. To the east, the coast is a good area for boating with islands. It has the potential to be a major leisure marine boating center. In this study, several suggestions for vitalizations on the leisure marine boats industry are made after comparing the leisure marine industry of each country. The 4 policy directions are as follows. First, it is necessary to construct foundation of development by public private partnership. For this establish the basic plan for the development of the leisure marine industry and operates the Gyeonggi-do Leisure Marine Industry Development Committee(tentative name) in consultation with the public and private sectors. Second, it is crucial to development of Support System for the technological competitiveness of leisure marine boat industry. It aims to train professional personnel for improve technology competitiveness and establish R&D support system to secure industry competitiveness. Third, the popularizing leisure marine boats is one of the key policy. Infrastructure for leisure boating needs to be integrated Marina facilities and promote a shared leisure boat rental system. Fourth, to support policy for marine leisure boating system needs to be relevant system, including financial system and insurance for leisure boats.