• 수산해양기술연구
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• 제30권3호
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• pp.161-171
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• 1994

Mesh selection analysis for the trawl net were carried out at the Southern Korean Sea and the East China Sea during the 1992-1994 years by the training ship Seabada of the National Fisheries University of Pusan, using A type (51.2mm), B type (70.2mm), C type (77.6mm), D type (88.0mm) square mesh cod-ends. The fishing trials were made using bottom trawl of the trouser type cod-end with cover net. Selection curves and selection parameters were calculated by a logistic model for Sphyraena pinguis, Pampus argenteus, Trachurus japonicus, Pagrus major, Callanthias japonicus, Trichiurus lepturus. The results obtained are summarized as follows: 1. Red barracuda : Selection range and fifty percent selection length in the A type was 115.8mm, 292.8mm, respectively. 2. Harvest fish : Each selection range and fifty percent selection length in the B. C. and D type was 37.7mm, 113.8mm : 40.1mm, 131.7mm and 64.8mm, 148.6mm, respectively. Selection parameters of master curve were : slope, 3.81 : intercept, -6.4. Optimum mesh size was 89.3mm. 3. Horse mackerel : Each selection range and fifty percent selection length in the A, B, C and D type was 43.0mm, 148.3mm : 60.7mm, 183.2mm, 214.5mm and 91.4mm, 254.9mm, respectively. Selection parameters of master curve were : slope 2.30 : intercept, -6.4. Optimum mesh size was 66.8mm. 4. Red seabrem : Selection range and fifty percent selection length in the D type was 42.7mm, 203.4mm, respectively. 5. Yellowsail red bass : Selection range and fifty percent selection length in the A type was 84.0mm, 110.6mm, respectively. 6. Hair tail : Each selection range and fifty percent selection length in the A, B and C type was 59.7mm, 176.0mm : 100.9mm, 250.7mm and 178.6mm, 307.0mm, respectively. Selection parameters of master curve were : slope, 1.54 : intercept, -5.4. Optimum mesh size was 57.5mm.

• 한국양식학회:학술대회논문집
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• 한국양식학회 2003년도 추계학술발표대회 논문요약집
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• pp.145-145
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• 2003

To evaluate the effect of PAHs on fertilization and larval development of the Pacific oyster, Crassostrea gigas via in vivo exposure for 30 days. Conditioned C. gigas adult brood stock was taken from oyster farm in May 2003 and raised in flow through tank at 20-22$^{\circ}C$ with feeding equivalently mixed marine microalgae: Chaetoceros simplex, C. gracilis, Isochrysis galbana and Tetrasemis tetrathele. The oysters were exposed to PAHs cocktail at 200ppb (10 species) until they are fully riped with an untreated group. Motility of sperm, Fertilization and The percent of D-shaped larvae was measured under microscope (Olympus BX-50). Fertilization capability using dry sperm and eggs from both non- and PAHs treated brood stocks was significantly reduced at the treated group (P<0.01). In addition to the origin effect, it was obvious that fertilization of eggs from both group were adversely suppressed in consistent with PAHs level (P<0.01). The percent of D-shaped larvae in treated group was significantly reduced comparing to non-treated. The percent was adversely correlated with PAHs level, which was more significantly reduced in treated group. Therefore, it was obvious that PAHs exposure on the Pacific oyster has adverse affects on the sperm as well as larvae in both maternal and acute source.

• 약학회지
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• 제3권1호
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• pp.23-25
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• 1957

The herb of Geranium sibirium L, a drug knwon as "Chui Sonni Poul" distributed widely, has been used as a folk-medicine for the treatment of diarrhea. The dried entire herb is boiled with methanol and methanol is distilled of from the filtered methanol extract under reduced pressure. Then the extract is boiled with water and filtered off. From the filtrate, the following substances are isolated and identified by treating with organic solvents as ether, ethyl acetate, and etc.: 1. Gallic acid: a colorless needle crystal which is soluble in alcohol and water. mp.235.deg. C, positive (dark blue) against the ferric chloride reagent. 0.76 percent of gallic acid is yielded from the herb. 2. Quercetin: a light yellow crystal. mp.194.deg. C. negative against the ferric chloride reagent. 3. Ellagic acid: a light yellow crystal which is insoluble in ehter and acetone and slightly soluble in alcohol. Positive (blue) against the ferric chloride reagent. The crystal obtained by recrystalisation from pyridine, does not melt by 360.deg. C. Represent a yield of 0.03 percent from the herb. 4. Crude tannin: a approximately 7.6 percent of crude tannin is yielded by treating with ethyl acetate. gallic acid and querceetin are yielded by hydrosis with dliute sulfuric acid. Based on the above results, the following suggestion could be recommendable; Geraed in the Japanese Pharmacoeia VI.acoeia VI.

• Journal of Ginseng Research
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• 제11권1호
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• pp.39-45
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• 1987

Panu ginseng (6 Year old) was grown $17^{\circ}C$/$15^{\circ}C$ and $27^{\circ}C$ day/$23^{\circ}C$ night in the light room of phytotron for 84 days. The composition of neutral lipid(NL), glycolipid(GL), phospholipid(PL) and fatty acids were investigated in leaves. The contents of NL and GL were higher in $25^{\circ}C$ while PL was lower. Similarity (simple correlation) of lipid composition between $16^{\circ}C$ and $25^{\circ}C$ was not significant for PL and GL but significant for NL(p = 0.001), indicating that PL and GL were important factors in the mostability. Similarity of fatty acid composition between growth temperatures was highly significant (p = 0.001) for all three lipids, while similarity between lipids was significant between NL and PL (p=0.01) and NL and GL (p=0.05), but nonsignificant between GL and PL at $16^{\circ}C$. .In NL digalactosyldiacylglycerol (3->$7^{\circ}$) increased but monogalactosyldiacylglycerol (10%) did not change at $25^{\circ}C$. In PL phosphatidic acid (22 -> 4%) and phosphatidylinositol (18 -> 5%) decreased but phosphatidyl ethanolamine (12->l6%) increased at $25^{\circ}C$. Percent unsaturated acid slightly decreased in NL and PL but greatly increased in GL at $25^{\circ}C$. Percent unsaturated bond slightly decreased in NL but did not change in PL and GL.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1989년도 하계종합학술대회 논문집
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• pp.341-344
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• 1989

A Modified equivalent circuit by combining a series and parallel of polymer matrix for estimating the dielectric constant ${\bar{K}}_{33}$ values changing the volume percent of $PbTiO_3$, the dependences of frequency for the 713 and dissipation factor for 0 - 3 composites was derived. The difference of the dielectric constant and dissipation factor between the calculated and measured values became smaller at higher volume percent of $PbTiO_3$. There was, good agreement between the calculated and observed results for 70 volume percent of $PbTiO_3$ and 30 volume percent of Eccogel composite at 1(KHz), 25($^{\circ}C$). The optimized variable x was 0.94 in $PbTiO_3$ ceramics. $PbTiO_3$ powder and Eccogel polymer were used as piezoelectric fillers and matrix, respectively.

• 한국응용곤충학회지
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• 제38권1호
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• pp.23-28
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• 1999

온도(24$^{\circ}C$, 28$^{\circ}C$ 및 32$^{\circ}C$) 및 기주조건이 담배거세나방의 용발육, 성충수명 및 산란에 미치는 영향을 조사하였다. 용화유은 23~88%로 온도가 높을수록 높았으며, 기주별로는 인공사료, 고구마잎, 들깨잎 및 콩잎의 순서로 높았다. 용무게는 0.28~0.40g으로 온도가 낮을수록 약간 무거워지는 경향이었으며, 기주별로는 들깨잎에서 가장 무거웠으나, 그밖의 기주간에는 현저한 차이가 없었다. 용기간은 $24^{\circ}C$, 28$^{\circ}C$ 및 $32^{\circ}C$에서 각각 약 14일, 10일 및 7일로 기주에 따른 유의한 차이가 없었다. 우화율은 21~89%로 온도가 높을수록 높았으며, 기주별로는 28$^{\circ}C$와 $32^{\circ}C$에서 인공사료, 고구마잎, 들깨잎 및 콩잎의 순서로 높았으나, $24^{\circ}C$에서 인공사료, 콩잎, 들깨잎 및 고구마 잎의 순서로 높았다. 성충의 산란전기간은 $24^{\circ}C$, $28^{\circ}C$ 및 32$^{\circ}C$에서 각각 3.2일, 2.8일 및 2.5일로 온도에 따른 차이가 있었으나, 기주에 따른 차이는 없었다. 성충수명은 3.9~6.4일로 온도가 높을수록 짧았으며, 지주별는 인공사료, 고구마잎, 콩잎 및 들깨잎의 순서로 긴 경향이었고, 암컷보다 수컷에서 약간 길었다. 성충의 총 산란수는 803~1,441개로 온도 및 기주간에 변이가 심하였으나, 인공사료보다 천연기주에서 산란수가 현저히 많았다. 난괴당 난수 및 개체당 난괴수도 각각 약74~186개 및 6~14개로 온도 및 기주에 따라 변이가 심하였다.

• 대한간호학회지
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• 제2권1호
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• pp.73-85
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• 1971

A epidemiological study was conducted by author on 925 official reported patients with the first grade legal communicable disease during the period from January 1969 to December 1970 in all area of Kangwon province. As the results of this study, tile following conclusion were obtained. A) Typhoid fever 1. Of all 925 patients surveyed, typhoid fever showed the highest rate as 50.7 percent. 2. Age group from 10 to 14 years old showed the highest rates 3. High epidemic period was from June to September. 4. As for the occupational distribution, unemployed showed the highest rate as 63.2 percent, followed by-21.1 percent in farmer and 9.4 percent in student. 5. Most of all patients(93.7%) were isolated in their own house 6. The morbidity rate was 16.0 per 100, 000 population and case fatality rate was 1.76 percent 7. The mean of the duration from onset to diagnosis and carnation were 11.7$\pm$7.1 days and 25.1$\pm$13, 8 days respectively. 8. Main diagnostic method was almost the clinical examination B) Dysentery 1, Of all 925 patients surveyed, dysentery showed 44.4 percent 2. Age group from 0 to 9 years old showed the highest rate 3. High epidemic period of this disease was from April to August 4. As for the occupational distribution, unemployed showed the highest rate as 73.9 percent, followed by 17.7 person in farmers and 7.0 percent in student 5. the attack rate of agricultural area was higher than of fishing area 6. The mean of the duration from onset to diagnosis and crating duration were 10.4$\pm$4.3 days and 15.7$\pm$8.8 days respectively. 7. The morbidity rate and case fatality rate were 21.8 per 100.000 population and 1.46 percent, respectively. 8. Most of all patients were isolated in own house 9. Most of all patients (97.6%) were diagnosed by the clinical examination C) Diphtheria 1. As for the age distribution, 0-4 years old group showed the highest rate as 44.4 percent followed by 27.7 percent in 5-9 years old group and 22.2 percent in 10-14 years old group 3. Epidemic season was almost in autumn, winter and spring 3. The morbidity rate was 0.96 per 100.000 population and case fatality rate was high as 26.6 percent 4. 66.6 percent of this disease was isolated in their own house and the others were admitted in hospital D) Paratyphoid fever 1. Most of all patients were attacked below 20 years old 2. Epidemic season was almost was almost in late summer 3. The morbidity rate was 0.53 per 100.000 population 4. The mean of the duration from onset to diagnosis and crating duration were 18.3$\pm$1.3 day and 13.7$\pm$0.2 day. respectively.

• 한국식품영양학회지
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• 제30권4호
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• pp.735-741
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• 2017

This study was conducted to investigate if the supplement formula may improve alcohol metabolism in healthy adult men. In a double-blinded, randomized, crossover study, subjects were administrated yeast extract mixtures (YEM, n=15), Hovenia dulcis mixtures (HDM, n=15), placebo (PLA, n=15), and control (CON, n=15) in an oral dose followed by one week washout periods. At each visit (0, 1, 2, 3, 4 week), subjects drank 450 mL, 20.1 percent alcohol after administered mixtures. Blood was drawn periodically (0, 0.25, 0.5, 1, 2, 4, 6, 15 hours). Fifteen subjects completed the protocol and were included in the analysis. Plasma ethanol concentration was lower in YEM (10 percent) and the HDM (5 percent) groups. The area under the curves (AUC) and $C_{max}$ for plasma ethanol were significantly decreased only in the YEM group, when compared with the CON group. The AUC and $C_{max}$ for plasma acetaldehyde concentration were significantly decreased in the YEM (45 and 54 percent) and the HDM (35 and 53 percent) groups respectively, when compared with PLA (p<0.01). Together, these findings validate that YEM or HDM improved alcohol metabolism and hangover syndromes, leading to reduce alcohol concentration and acetaldehyde concentration without adverse effects.

• 한국식품위생안전성학회지
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• 제13권3호
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• pp.189-195
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• 1998

본 연구는 Group A (Permethrine.Phthalthrine), B(Permethrin.Furamethrine) 및 C(Phthalthrine.Dichlorvos)를 공시 살충제로 하였으며, P.B.O., MGK-264 및 S-421를 협력제로 각각 선택한 후, 그 첨가 비율에 따라 Blattella G.와 Musca D.에 대한 살충효과를 비교 실험하였다. 가정용 살충제로서 유효성을 참작하여 Knock-down rate($KT_{50},\;KT_{90}$)와 누적 Motraility(percent/hrs)를 측정한 결과 공시살충제 A, B, C의 각 군에 협력제를 첨가한 시제품의 경우 살충효과가 크게 증가되었고, 첨가한 협력제 중 P.B.O의 살충효과가 가장 크게 나타났으며, 다음은 S-421>MGK-264의 순 이었다. 첨가비율에 대해서는 3종류의 첨가제모두에서 $1:5{\geq}1:4>1.3$의 순으로 증가하여 살충효과는 협력제의 농도에 따라 비례함을 알 수 있었다. 또한 시간 경과에 따른 Mortaility(percent) 역시 $KT_{50}\;또는\;KT_{90}$과 유사함에 따라 Knock-down rate가 그 효능을 증명해 주었다.

• 정보처리학회논문지C
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• 제13C권2호
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• pp.259-266
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• 2006

스팸 메일의 양의 급증함에 따라, 다양한 스팸 메일 필터링 기법이 제시되고 있다. 이런 필터링 기법 가운데, 학습 기반 필터링 기법은 현재 가장 보편화된 필터링 기법 가운데 하나이다. 본고에서는 신경망과, 유전자알고리즘, 카이제곱통계를 이용한 학습 기반 필터링 기법을 제시한다. 제안된 필터링 기법은 기존 필터링 기법의 문제를 해결하고, 스팸 메일 필터링에 높은 정확도를 제공할 수 있다 제안된 필터링 기법은 스팸메일 필터링 정확도와 정상 메일 필터링 정확도에서 각각 95.25%와 95.31%의 높은 정확도를 보인다. 이런 실험 결과는 기존의 규칙 기반 필터링 기법과 베이지안 필터링 기법에 비해 각각 7%, 12% 이상 높은 수치이다.