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金弘燮,文溶植 조선대학교 농업연구소 1984 農業硏究 Vol.1984 No.1
木浦河口堰과 靈光백수의 新干拓地에 대한 土性別 ?分濃度別에 따른 植物相에 대해 1984年 5月~9月까지 5回에 걸쳐 調査하여 얻은 結果를 要約하면 다음과 같다. 植物相은 木浦河口堰 新干拓地에 있어서는 7科 17種 1變種이고 靈光백수 新干拓地에서는 8科 20種 3變種이 自生하고 있었다. 양干拓地를 통해 植物分布는 벼과>국화과>명아주과>사초과>마디풀과 順이었다. P. communis, S. herbacea, S. maritima, A. tripolium, s. viridis, C. mitratas는 群落을 이루었다. 土生別 植物相은 徵砂質壤土에서는 21種 埴壤土에서는 17種이었다. 土壤?分濃度別에 따른 植物相은 NaCl 0.25% 以下에서는 14種, NaCl 0.26~0.50%에서는 22種, NaCl 0.51~0.75%에서는 10種, NaCl 0.76% 以上에서는 6種이었다. According to soil texture ana-"degree of salinity in the ncw reclaimed soil of the Mokpo estuary and Young Gwang Baek Soo, flora were investigated five times from May to September 1984. The results obtained are follows. The flora of the Mokpo estuary for new reclaimed soil were 7 families, 17 species and 1 variety. The new reclaimed soil of Young Gwang Baek Soo were 8 families, 20 species and 3 variety. The total for both areas was spontaneous 9 families, 22 species and 3 variety. Plant distribution of both reclaimed soils was Gramineae > Compositae > Chenopiaceac > Cyperaceae > Polygonaceae. P. communis, S. herbacea, S. maritima, A. tripolium, S. viridis, C. mitrata were a composed community. The flora separated by soil texture: Silty loam had 22 species and Clay loam had 17 species. The flora by degree, of salinity of soil; Below 0.25% NaCl had 14 species, 0.26~0.50% NaCl had 23 species, 0.51~0.75% NaCl had 10 species and over 0.76% NaCI had 6 species.
市內버스 交通事故 實態 및 豫防對策에 關한 硏究 : The Case of Urban Buses in Seoul 서울시 事故事例를 中心으로
김준식,김홍상 明知大學校 産業技術硏究所 1996 産業技術硏究所論文集 Vol.15 No.-
Urban buses have importance in the urban transit systems in our county, because of the easy access and low fare. But, until now the quality of transportation service don't satisfy the public transportation users need, and as the urban buses traffic accidents are three times the number of accidents, 1.4 times of the death and twice of the injured than suburban buses in the traffic accidents rate per 100 million vehicle-Km it threatened the basic safety to the urban public transportation. Therefore, this study analyzed actual traffic accidents condition of the urban buses into prevention of the urban buses traffic accidents. The most important thing is the efficient management system. To make this, the bus mutes arrangement based on the public interest and rational operation management are solved first of all. Furthermore, to prevent the traffic accidents of the urban buses making the practical use of analyzing data about actual condition of the accidents records management of the fleet are needed.
마이크로 기공 알루미나 기판위에 스프레이 코팅된 ZnO 고정막의 광촉매 성질을 이용한 사진폐액으로 부터 Ag이온 회수
김홍식,안정민,박성 明知大學校 産業技術硏究所 2009 産業技術硏究所論文集 Vol.28 No.-
ZnO nanopowders were synthesized by solution combustion method(SCM) and their average particle size was about 30nm. They were immobilized on microporous alumina substrates by spray coating. The microporous alumina substrates were prepared by anodization and the average pore size was about 150nm. Ag ions were tried to be recovered from waste photograph developing solution by photocatalytic reaction. Three kinds of samples were prepared to compare their photocatalytic efficiency commercial ZnO powders (slurry type reaction), SCM ZnO powders immobilized on normal alumina substrates and SCM ZnO powders immobilized on anodized alumina substrates. The commercial ZnO powders without immobilization did not sbow any photocatalytic reaetion even though they have maximum surface area. This is probably ascribed to their poor cristalline quality. However, the Ag ions recovery rate by SCM ZnO powders immobilized on anodized alumina substrates was about 2.5 times higher than that by SCM ZnO powders immobilized on normal alumina substrates. This big difference in photocatalytic efficiency is probably due to the large surface area of the anodized alumina. This result was correspondent to photoluminescence measurement results.
다차선 고속도로 노면배수시설 개선방안연구 : L형측구 및 중앙분리대 집수정을 중심으로
김홍상,조강식 明知大學校 産業技術硏究所 1996 産業技術硏究所論文集 Vol.15 No.-
The road drainages that enables of the vehicle's fine operation and the road organization preservation are very important facilities. Especially, the functions of the road surface drainage facilities are critical for the safe driving in the rainy days. Normally, the expressway is designed by the vuilt-in-guide-lines and criteria. In the case of the design of multi-lane expressway, it is necessary to apply the different criteria from 4 lane expressway. Because the broaden road-surface of multi-lane expressway increase the drainage volume, the criteria of the 4 lane expressway can't be used to design of the multi-lane expressway. This paper is concentrated on the following improvement methods of the L-type ditch and the median barrier catch-pit that is directly related with the road surface d-rainage.
김진택,최홍식,안상현,박인식,강윤호,김호현,이해풍 동국대학교 경주대학 1999 東國論集 Vol.18 No.-
Knee joint BALB/C mice were administered with JINTONGSAN(JTS) extract after Lipopolysaccaride(LPS) injection were observed to investigate the anti-inflammatiory effect of JTS for arthritis. The JTS extract(3.3 ㎖/㎏/day) were daily administered to mice suffered from arthritis of knee joint induced by LPS injection, as dose of 300㎖/㎏. The specimen were fixed in 4% paraformaldehyde and were decalcificate in EDTA solution for 4 Weeks. In synovial membrane, the hyperplasia of synovial lining cell(fibroblast like synoviocytes) on JTS group were diminished then LPS group. The number of synovial lining cell(synovial phagocytic cells) with filopodia and the infiltrated of lymphocyte on JTS group were decreased. In fibrous membrane, The region of fibrosis on JTS group were mitigated than LPS group and the appearance of fibroblast and migrated cell, as neutrophil leukocytes and lymphocyte, were decreased. As results indicated that JTS was effective in anti-inflammatory reaction for LPS-induced arthritis.
Applications on p-values of Chi-Square Distribution
Hong, Chong Sun,Hong, Sung Sick The Korean Statistical Society 2002 Communications for statistical applications and me Vol.9 No.3
In this paper, behaviors and properties of p-values for goodness-of-fit test are investigated. With some findings on the p-values, we consider some applications to determine sample size of a survey research using the regression equation based on a pilot study data. Regression equations are obtained by the well-known least squared method, and we find that regression lines could be formulated with only two data points, alternatively. For further studies, this works might be extended to t distributions for testing hypotheses about population mean in order to determine sample size of a prospective study. Also similar arguments could be explored for F test statistics.
COMPARISON STUDY OF BIVARIATE LAPLACE DISTRIBUTIONS WITH THE SAME MARGINAL DISTRIBUTION
Hong, Chong-Sun,Hong, Sung-Sick The Korean Statistical Society 2004 Journal of the Korean Statistical Society Vol.33 No.1
Bivariate Laplace distributions for which both marginal distributions and Laplace are discussed. Three kinds of bivariate Laplace distributions which are extended bivariate exponential distributions of Gumbel (1960) are introduced in this paper. These symmetrical distributions are compared with asymmetrical distributions of Kotz et al. (2000). Their probability density functions, cumulative distribution functions are derived. Conditional skewnesses and kurtoses are also defined. Their correlation coefficients are calculated and compared with others. We proposed bivariate random vector generating methods whose distributions are bivariate Laplace. With sample means and medians obtained from generated random vectors, variance and covariance matrices of means and medians are calculated and discussed with those of bivariate normal distribution.
Ma, Hong,Kim, Chung-Soo,Ma, Yuan,Nam, Sang-Yoon,Kim, Dong-Seon,Woo, Sung-Sick,Hong, Jin-Tae,Oh, Ki-Wan John Wiley Sons, Ltd. 2009 Phytotherapy research Vol.23 No.9
<P>This study was performed to investigate whether magnolol enhances pentobarbital-induced sleeping behaviors through the GABAergic systems. Magnolol prolonged the sleeping time induced by pentobarbital. In addition, magnolol increased chloride influx in primary cultured cerebellar granule cells. The expression of the GABA<SUB>A</SUB> receptor &agr;-subunit was increased selectively by magnolol, but magnolol had no effect on the abundance of &bgr;- or &ggr;-subunits. The expression of glutamic acid decarboxylase (GAD) was not influenced by magnolol. It is suggested that magnolol may enhance pentobarbital-induced sleeping behaviors through the activation of GABAergic systems. Copyright © 2009 John Wiley & Sons, Ltd.</P>