• Food Science and Biotechnology
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• v.16 no.5
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• pp.663-674
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• 2007

Starches from different botanical sources differ in the ratio of amylose to amylopectin contents, molecular structures of amylose and amylopectin, granule morphology, and minor-component contents. These structural features result in different gelatinization, pasting, retrogradation properties, and enzyme digestibility of starch granules. In this review, compositions and molecular structures of starches and their effects on the physicochemical properties are summarized and discussed.

• Culinary science and hospitality research
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• v.7 no.1
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• pp.135-145
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• 2001

This study was undertaken to analyze chemical composition, minerals and texture characteristics of Pongnipgangjung in various volumes of adding Pongnip powder. With increasing Pongnip powder level, moisture, total nitrogen, crude protein, crude fat and crude ash contents were significantly increased. Ca, P, K and Mg contents of Pongnip powder 1%, 3%, 4% was higher than Pongnip flour free group. According to rheometer evaluatuion, Pongnipgangjung added Pongnip powder 1% showed higher level of hardness than Pongnip powder 3%, 4% and free group. In sensory evaluation, the results of preference are in the following order Pongnipgangjung added Pongnip powder 1%, 3%, 4% and free group.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.43 no.1
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• pp.18-24
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• 2010

The biochemical composition of wild and cultured yellow croaker, Larimichthys polyactis, was analyzed in this study. The moisture contents in wild and cultured yellow croaker was high: $75.2{\pm}1.60%$ and $79.5{\pm}1.95%$, respectively. The crude lipid contents of wild and cultured yellow croaker were low; moreover, the crude protein and ash contents did nol differ significantly (P>0.05). The total amino acid content of wild and cultured yellow croaker did not differ significantly; however, the cystine content of wild yellow croaker was higher than than of cultured yellow croaker. The essential /nonessential amino acid (E/NE) ratio in wild and cultured yellow croaker was $0.76{\pm}0.01$ and $0.77{\pm}0.02$, respectively. The free amino acid and extractive nitrogen contents of cultured yellow croaker were high and differed significantly. The water soluble vitamin ($B_1$, $B_2$, $B_6$, $B_{12}$, C and folate) and fat-soluble vitamin (A and E) contents did not differ significantly. expect for niacin. The niacin content of cultured yellow croaker was higher than that of wild yellow croaker. The fatty acid composition of wild and cultured yellow croaker did not differ significantly The sodium, magnesium, and copper contents in wild yellow croaker were relatively low. In comparison, the calcium, phosphorus and iron contents in cultured yellow croaker were relatively high. Overall, the biochemical composition of wild and cultured yellow croaker did not differ significantly.

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.4
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• pp.535-541
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• 2010

Excessive intake of sodium is known as a risk factor for hypertension, and Korean adults consume sodium 3 times higher than Dietary Reference Intakes (DRIs). The purpose of this study was to evaluate the difference on sodium content between analyzed and estimated by food composition table and food exchange list. Seven days of low salt diet and seven days of high salt diet were prepared, and sodium contents were estimated by food composition table and food exchange list and measured by atomic absorption spectrophotometer. Sodium contents of diet per day estimated by food exchange list significantly differed from analyzed content, but those estimated by food composition table were not. However, when absolute differences from analyzed content were compared by dishes in the low and high salt diet periods, there were significant differences among estimated sodium content by food composition table and food exchange list and analyzed sodium content. The discrepancy between those results was due to that absolute value was used to compare sodium contents of dishes but not to compare sodium contents of days. In addition, main dish, side dish, and soup were significantly different among estimated sodium content by food composition table and food exchange list and analyzed sodium content. Actual sodium contents of Jap-Chae Deop-Bap and Roasted chicken with oyster sauce differed to a great extent from estimated contents by food exchange list and food composition table. In conclusion, actual sodium contents of Korean dishes were significantly different from those estimated by food composition table and food exchange list, and thus these differences in salt content should be considered on planning of low-salt menu for hypertensive patients.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.45 no.3
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• pp.203-206
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• 2000

Although lignans of sesame seed, sesamolin and sesamin have been known as possessing an antioxidant activity, it is less known about their contents of the sesame cultivated in Korea. Collections of sesame cultivated in Korea were used for studies on their lignans content of the seed and fatty acids composition of the oil. The sesamin content of sesame seed with white-coat were 370.29 mg/100g seed, while that of sesame seed with black-coat were 246.58mg/100g seed. Also, the sesamolin contents of sesame seed were 202.22 mg/100g seed in white-coat cultivars and 132.68 mg/100g seed in black-coat sesames. Hence, the lignan content of white-coat sesame cultivars was significantly hi임or than that of black-coat ones. Korean sesame cultivars also showed considerably higher sesamin content than sesamolin content in seeds. The correlation between sesamin and sesamolin contents was not recognized in Korean sesame cultivars. The stearic acid of white-coat sesame was significantly higher than that of black-coat one (p＜0.05).

• Journal of the Korean institute of surface engineering
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• v.43 no.5
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• pp.243-247
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• 2010

The micro Vickers hardness and internal stress of Ni-Fe metal thin film synthesized by electrodeposition method at $25^{\circ}C$ were studied as a function of bath composition, and surface microstructure and atomic compositions of thin films were investigated by SEM and EDS. And the shape change of $200\;{\AA}$ Ni-Fe nanowires made using anodic aluminum oxide(AAO) templates by electrodeposition method were observed by SEM as a function of ultrasonic treatment time and bath composition. The Fe deposition contents on the substrate non-linearly increased with Fe ion concentration over total metal ion concentration. In case of low Fe contents film, the grain size is smaller and denser than high Fe contents deposited films, and the micro Vickers hardness increased with Fe contents of electrodeposited films. These results affected the shape change of nanowire after ultrasonic treatments.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.287-288
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• 2006

CG and Photo-realistic image composition in the ocean scenes is frequently used in movies and TV advertisement. But it is very difficult task because it's impossible to use calibration tool in outdoor environment or to use auto-calibration algorithm using natural features like KLT(Kanade Lucas Tomasi feature tracker) from the ocean scene. We propose a simple, effective method for solving camera motion using previous knowledge about background structure. We applied our method to the production of a commercial movie, 'Hanbando' and the result was satisfactory.

• Journal of radiological science and technology
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• v.44 no.6
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• pp.591-597
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• 2021

In the present study, we developed virtual reality education contents for radiation generator on radiation education field. The radiation generator was divided by module and even the X-ray exposure part was manufactured in detail for designing 3D models. The mechanical details of the X-ray exposure part, the function of adjusting field size of the X-ray, the function of moving the exposure part, and the demonstrating the principle of the X-ray tube were applied. For developing VR contents, the Unreal Engine was used. To evaluate the usefulness of virtual reality content, we used t-test by SPSS. The group used the simulator showed significantly higher levels of understanding of X-ray generation, X-ray irradiation unit composition, irradiation field size adjustment, irradiation unit position adjustment, and overall composition and function. We believe that this VR contents will be used well with radiation safe environment.

• Environmental Mutagens and Carcinogens
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• v.15 no.2
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• pp.140-147
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• 1995

For studying the effect of different dietary fats on carcinogenesis, fatty acid composition of membrane and lipid peroxidation were measured. Male Sprague-Dawley rats were fed on diet containing 15%(w/w) beef tallow or soybean oil. A single dose of 50 mg 2-AAF/kg B.W. was injected i.p. in each diet group 10 times. Rats were sacrifled after 1, 5, 10, and 15 weeks from the first injection. By 2-AAF injection, !ipid peroxidation increased slightly compared to control group. The rats fed on different fats had similar MDA production and those fed on soybean oil had slightly higher free radical concentration measured by ESR. In young rats, iipid peroxidation level was high and hydroxy radical production was higher in soybean oil group than in beef tallow group. With age, the lipid peroxidation values were decreased initially then increased. The fatty acid composition in microsomal membrane was reflected by dietary fatty acid composition. In soybean oil group, monoenoic acid was lower and polyunsaturated fatty acid was higher than beef tallow group. Linoleic acid contents showed the most discrepancy among groups. By 2-AAF treatment, iinoleic acid content and unsaturation index increased in soybean oil group. But in beef tallow group, there was no difference in fatty acid contents.

• Review of Korea Contents Association
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• v.13 no.3
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• pp.65-69
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• 2015