• 가정의 벗
• /
• v.33 no.5 s.381
• /
• pp.18-18
• /
• 2000

• 가정의 벗
• /
• v.36 no.5 s.417
• /
• pp.18-18
• /
• 2003

• Sijohaknonchong
• /
• v.18 no.1
• /
• pp.5-18
• /
• 2002

• Information Display
• /
• v.18 no.5
• /
• pp.12-18
• /
• 2017

• Communications of the Korean Institute of Information Scientists and Engineers
• /
• v.18 no.5
• /
• pp.10-18
• /
• 2000

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.27 no.5
• /
• pp.476-481
• /
• 1994

The lipase activity of crude enzyme extracted from the molded sardine meal(MSM) 'koji', and lipid classes and fatty acid composition of neutral lipid(NL) and phospholipid (PL) of MSM 'koji' were investigated. The optimum pH and temperature of the crude enzyme was 8.0 and $40^{\circ}C$ using olive oil emulsion as a substrate, but the residual activity depended on pH and temperature. Total lipid contents of the MSM 'koji' consisted of 15.33g/100g NL, 5.45g/100g PL respectively. The major lipid classes of NL were triglyceride ($53.4\%$) and free fatty acid($28.1\%$), that of PL were phosphatidylethanol($32.7\%$), phosphatidylinositol($25.5\%$), phosphatidylcholine($25.1\%$), lyso-phosphatidylcholine($7.3\%$) and sphingomyeline($3.5\%$). The prominent fatty acid fractions of NL were 16:0, 22:6, 18:1 n-9, 18:2n-6 and 20:5, with PL fractions the major fatty acid ratios were 22:6, 16:0, 18:1n-9, 18:2n-6 and 20:5, in the same respective order.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.22 no.5
• /
• pp.621-628
• /
• 1993

Total lipid contents from 10 species of marine algae(2 green, 5 brown, and 3 red algae) collected from different places in Korea were examined and their fatty acid compositions were compared among species and habitats. Total lipid(TL) was prominent in green laver(about 7.3~10.1%) of the green algae, in sea mustard and seaweed fusiforme(about 3.1~4.8%) of the brown algae and purple laver(about 4.9~6.4%) of the red algae. Sea mustard and seaweed fusiforme collected at Chungmu contained a relatively high level of TL than that at Yosu and Kijang. The TL content of purple laver showed the highest portion in that collected at Nakdong. Green algae comprised the majority of n-3 fatty acids(29.0~66.3%), which mainly consisted of 16 : 4(n-3) (or 16 : 3 (n-3)), 18 : 3(n-3) and 18 : 4(n-3). Brown algae accounted for a low level of n-3 fatty acids(17.9~36.5%) mainly 18 : 4(n-3), 18 : 3(n-3) and 20 : 5(n-3), whereas the brown algae contained a significant level of n-6 fatty acids(7.23~26.5%) such as 20 : 4(n-6) and 18 : 2(n-6). In the case of red algae, the n-3 fatty acids consisted mostly of 20 : 5(n-3) which scored 53% of polyenoic acids in purple laver collected at Nakdong. The proportion of n-3 fatty acids in algae belonging to the same species was higher in algae of high TL contents. Consequently, TL and n-3 fatty acid levels from the seaweeds studied in this paper were different from their habitats.

• Journal of Korean Society of Archives and Records Management
• /
• v.15 no.3
• /
• pp.29-54
• /
• 2015

This study aims to propose an education program using the records and archives of the May 18th Democratic Uprising, which are large in number and have diverse provenance. The PBL model, which is a basic model for this program, is appropriate for suggesting a number of records and inducing the use of archives. This program is based on the rule of PBL but is divided into two parts: a pre-class level and an in-class level. The archives list for this program is selected from the archives map, which consists of a horizontal axis of provenance and a vertical axis of creation time. The expected effects of this program is to vitalize and expand the use of archives and to inspire a student's historical thinking. This program is meaningful in proposing a proposed education program using the records and archives of a historical event and the probability to use in a real class.

• Polymer(Korea)
• /
• v.30 no.5
• /
• pp.426-431
• /
• 2006

Novel azacrown ether containing blue -light emitting anthracene fluorophore, 9,10-bis [p-(1-aza-18-crown-6)methylphenyl] anthracene (3) and N,N-bis [9-(p-methylphenyl) anthracenyl-methyl] -1,6-diaza-18-crown-6 (4) were prepared by reacting anthracene derivatives 1 and 2 with mono- and diaza-18-crown-6, respectively Also, crown ether containing fluorophore copolymer (5) were prepared by reacting 1,6-diaza-18-crown-6 with 1. Their fluorescence emission spectral studies were investigated by binding group I, group II and various metal cations. The fluorophores showed an absorption at ${\lambda}_{max}$= 372 nm and an emission at ${\lambda}_{max}$= 430 nm. pH Dependency of fluorescence emission intensity were examined to determine the optimum pH for the fluorophores.

• Journal of Korean Ophthalmic Optics Society
• /
• v.19 no.1
• /
• pp.121-133
• /
• 2014

Purpose: In this study, we analyzed the progression and prevalence of myopia according to age for the last five years. Methods: We have done a comparative analysis of the progression and prevalence of myopia with the Korean National Health and Nutrition Examination Survey document from 2008 to 2012. Results: According to classification of myopia by age group for the last five years, the prevalence of low myopia was 25.5% for 5-11ages group, 25.1% for 12-18ages, 27.3% for 19-29ages, 30.7% for 30-39ages, 29.6% for 40-49ages, 19.2% for 50-59ages, 11.8% for 60-69ages, and 20.2% for over 70ages respectively. The prevalence of moderate myopia was 21.7% for 5-11ages group, 43.6% for 12-18ages, 36.2% for 19-29ages, 30.0% for 30-39ages, 20.4% for 40-49ages, 9.9% for 50-59ages, 5.2% for 60-69ages, and 7.6% for over 70ages respectively. The prevalence of high myopia was 2.1% for 5-11ages group, 11.7% for 12-18ages, 11.5% for 19-29ages, 6.9% for 30-39ages, 5.6% for 40-49ages, 1.9% for 50-59ages, 1.5% for 60-69ages, and 1.0% for over 70ages respectively. Conclusions: We must recognize an importance to the increase of the progression and prevalence of myopia, so it is necessary to provide a social interest in prevention of deteriorating vision and eye health welfare.