• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2019.11a
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• pp.30-31
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• 2019

최근 들어 다양한 초 고화질 스트리밍 서비스의 보급과 통신기술의 급격한 발전에 따라 고화질 비디오 신호를 포함하는 멀티미디어 데이터의 이용과 전송의 중요성이 급속도로 증가하고 있다. 또한, 동시에 동영상에 대한 수요도 지속적으로 증가하고 있어, 더욱 효과적인 동영상의 압축기법이 요구되고 있는 실정이다. 본 논문에서는 최근 VVC(Versatile Video Coding) 표준화를 위하여 채택한 기술인 변환 생략 기술의 적용범위를 확장하여 기존의 방법처럼 휘도 채널에 적용하는 것뿐만 아니라 특정한 조건 하에서는 동일한 방법을 색차 채널에도 적용하도록 하여 압축 효율을 향상하는 방법을 연구하였다. 실험결과, 기존 VVC 방법 대비 BDBR 측면에서 (두번째는 SCC 영상의 실험결과) All Intra 방법에 대하여 Y(0.00%, 0.03%), U(-0.01%, -0.01%) 그리고 V(0.02%, -0.04%), Random access 방법에 대하여 Y(0.00%, 0.01%), U(-0.01%, -0.11%)그리고 V(0.03%, -0.15%)의 결과를 얻을 수 있었다.

• Journal of Chest Surgery
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• v.23 no.2
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• pp.245-252
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• 1990

To see the change of pulmonary arterial pressure after mitral valve replacement, postoperative cardiac catheterization and echocardiographies were performed in 12 patients of mitral valvular disease with pulmonary hypertension[systolic pulmonary arterial pressure>50 mm Hg]. The mean follow-up duration was 35.4[range: 15-47] months per patient. The following results were obtained. 1] Preoperative systolic pulmonary arterial pressure value of 66.17\ulcorner10.73mmHg decreased significantly to 29.17\ulcorner6.86mmHg postoperatively[p<0.01]. 2] Preoperative Pp/Ps value of 0.67\ulcorner0.13 decreased significantly to 0.28\ulcorner0.06 postoperatively[p<0.01]. 3] Preoperative PAWP value of 29.00\ulcorner4.02mmHg decreased significantly to 9.92\ulcorner4.27 mmHg postoperatively[p<0.01]. 4] Preoperative LAD value of 5.58\ulcorner1.20cm decreased significantly to 4.37\ulcorner0.67cm postoperatively [p<0.01]. In conclusion, pulmonary arterial hypertension secondary to mitral valvular disease could be reduced to normal range after successful mitral valve replacement.

• Korean Journal of Poultry Science
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• v.30 no.1
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• pp.61-66
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• 2003

This study was conducted to investigate the effects of dietary germanium biotite supplementation on egg quality and fecal noxious gas content in laying hens. One hundred and forty-four 40-wk-old, ISA Brown layers were used in this experiment. Dietary treatments were 1) CON(control diet), 2) GB0.5(control diet + 0.5% germanium biotite), 3) GB1.0 (control diet + 1.0% germanium biotite) and 4) GB1.5(control diet + 1.5% germanium biotite). Hen-day egg Production and egg shell breaking strength were not influenced by germanium biotite supplementation. However, egg weight decrease as the level of germanium biotite supplementation increased in the diets increased(Cubic effect, p<0.02). Eggshell thickness, yolk color and yolk index were not influenced by garmanium biotite supplementation. Serum triglyceride concentration as dietary germanium biotite increased (linear effect P<0.02; quadratic effect, p<0.05). Dietary supplementation of germanium biotite reduced fecal NH$_3$-N concentration (P<0.01), propionic acid(P<0.01), butyric acid( P<0.05) and acetic aicd(P<0.01) concentrations in the feces. In conclusion, the results of this experiment indicated that dietary germanium biotite supplementation did not affect egg shell quality, but reduced fecal NH$_3$-N concentration.

• Korean journal of food and cookery science
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• v.18 no.2
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• pp.164-172
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• 2002

The objective of this study was to investigate the sensory and quality characteristics of Solsulgi containing different ratios of ingredients such as pine leaves power(1, 2, and 3%), sugar, and water. The results of sensory evaluation showed that Solsulgi containing 1% pine leaves powder had the higher scores in overall acceptability, color and flavor preference. In the textural analysis of Solsulgi, the springiness, chewiness, gumminess, and hardness were decreased by adding pine leaves powder. The hunter's color L value of Solsulgi was decreased by the increase of pine leaves powder. The more pine leaves powder was added, the redness and yellowness of Solsulgi were increased. The moisture content of Solsulgi was higher in the samples with 3% pine leaves powder than those with 1 %.

• Proceedings of the KIEE Conference
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• 2001.04a
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• pp.163-166
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• 2001

It leaves much room for improvement that UTM-01 is of practical use. Therefor we will design of longitudinal pole magnet for UTM-02 system. The design of new magnet is based on light weight for bogie system. The new magnet for UTM-02 was reduced weight of magnet is 18kg per one, then it was ratio lift to weight is 10.13.

• The Korean Journal of Mycology
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• v.47 no.4
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• pp.347-357
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• 2019

This study evaluated the raw materials for spawning Perenniporia fraxinea, to eliminate urushiol. The growth rates of spawns on grains of millet, brown rice, and wheat were 4.92±0.05, 2.20±0.03, and 1.93±0.03 mm/day, respectively, and the laccase activity was 0.86±0.02, 0.04±0.01, and 0.01±0.00 U/mL, respectively. These observations revealed millet as the most appropriate grain for spawn production in terms of growth rate and enzyme activity. Inoculation of lacquer tree (Rhus verniciflua Stokes) stem bark with millet spawns of P. fraxinea resulted in a reduction of its urushiol contents, up to 86.6% on the third day and up to 98.5% on the seventh day. The optimal period of cultivation to eliminate urushiol was three days with 68% of residual flavonoids and 42% of phenolic components. When compared to the product cultivated from liquid spawn, the millet spawn reduced the cultivation period from 10 days to 3 days for eliminating urushiol.

• Asian-Australasian Journal of Animal Sciences
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• v.23 no.8
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• pp.1007-1012
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• 2010

The aim of the present study was to describe whether abnormal cervical mucus discharge (A-CMD) or pathogens in cervical mucus discharge (CMD) have effects on reproductive performance of cows and heifers in estrus. Animals having clear discharges (68 cows, 38 heifers) with normal viscosity and without bad odor were grouped as normal cervical mucous discharge (N-CMD) group. The other animals (84 cows, 32 heifers) were grouped as A-CMD group. Microorganisms isolated from samples were divided into three groups as uterine pathogens (UP), potential uterine pathogens (PUP) or opportunistic uterine pathogens (OUP). Presence of PUP was associated with A-CMD for both cows (p<0.01) and heifers (p<0.02). First service conception rates (FS-CR) were lower in cows positive for PUP (p<0.01). Moreover, presence of PUP and OUP affected FS-CR in heifers (p<0.01). Although A-CMD significantly affected FS-CR in cows (p<0.04), it did not affect FS-CR in heifers. Differences in average open day for cows (p<0.02) and first service age for heifers (p<0.01) were significant between N-CMD and A-CMD groups, respectively. The current study suggested that CMD should be evaluated more carefully when there are infertility problems. In addition to the known microorganism that causes sterility and infertility in the UP group, pathogens in the PUP group should be considered for their potential to cause infertility.

• Journal of Nutrition and Health
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• v.31 no.3
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• pp.324-332
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• 1998

Studies on relationships between antioxidant nutrients and various chronic diseases are increasing. In this study , serum concentrations of antioxidant minerals(Se, Cu, Zn & Mn) wee measured and compared among normal Korean adults. The ICP -MS method was employed to measure mineral concentrations. The subjects consisted of 329 healthy adults(154 men & 175 women) aged 20-79 years. The mean serum concentration appeared to be 26.4$\pm$0.41 (Se), 89.6$\pm$1.53(Cu), 113.3$\pm$1.56(Zn) & 0.34$\pm$0.05(Mn)$\mu\textrm{g}$/㎗ for men and 24.5$\pm$0.32(Se), 95.1$\pm$1.58(Cu), 133.6$\pm$1.79(Zn) & 0.35$\pm$0.02(Mn) $\mu\textrm{g}$/㎗ for women respectively. Among antioxidant minerals measured, the mean serum levels of Se and Zn were higher in men than in women(p<0.001), whereas that of Cu was higher in women(p<0.01). No significant difference between sex was observed for the mean Mn concentrations. The mean serum levels of Se(p<0.01) and Zn(p<0.05) decreased significantly in the 60's women On the other hand, the Mn concentrations in the 60's of women showed a significant increase(p<0.01). This difference seems to be due to the changes in menopausal status . The Cu levels in men showed a consistent increase with advancing age. The mean Cu/Zn ratios were 0.83 $\pm$0.04 for men and 0.95$\pm$0.02(p<0.01) for women respectively. The fact that this ratio increased significantly at the 60's of men (1.26 ; p<0.001) requires further study in relation to chronic diseases. When analyzed by stepwise multiple regression, drinking positively influenced serum Se and Cu levels for both men and women , smoking, however, negatively influenced all serum mineral levels for women. Further studies are needed to clarify precise roles of antioxidant minerals, their interactions and their relation to disease status.

• Journal of Food Hygiene and Safety
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• v.6 no.2
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• pp.83-87
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• 1991

Beef, pork and chicken on the market were analyzed for determination of tetracyclines residue and decomposition of tetracyclines by heating were studied. The content of oxytetracycline was trace in chicken A, 0.09 mg/kg in C and trace in beef C, pork A and B, but in the other samples was not detected oxytetracycline. Chlortetracycline residue was 0.14, 0.02 and 0.01 mg/kg in chicken A, C and beef B respectively. In HPLC analysis, two peaks of 8.1 and 9.0 min of retention time were found from beef and pork and expected to be component of meat, and because of same retention time, the one of 9.0 min interrupted determination of tetracycline. But those were not found in chicken, therefore the residue was 0.01 mg/kg in sample A. The residue were degradated rapidly by heating of roast, but slightly by that of boiling.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.10
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• pp.7043-7052
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• 2015

This study divides subjects into people with metabolically healthy obesity and those with metabolically unhealthy obesity to identify the physical activities and nutrients influencing adults with obesity. Participants in the sixth Korea National Health and Nutrition Examination Survey conducted from January through December 2013 were selected as the subjects, and an analysis of complex survey samples was conducted with them. It was found that the number of days of a flexibility exercise (Odds ratio (OR)=1.18, 95% confidence interval (95% CI)=1.01-1.38), water intake (OR=1.04, 95% CI=1.01-1.06) and protein intake (OR=1.07, 95% CI=1.02-1.13) for one week were higher in people with metabolically healthy obesity than in those with metabolically unhealthy obesity, while their fat intake (OR=0.99, 95% CI=0.98-1.00)and carbohydrate intake (OR=0.98, 95% CI=0.97-0.99) were lower. Based on the results of this study, it was found that nursing intervention for obesity would need an approach according to the metabolic condition of obesity.