• Journal of Veterinary Clinics
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• v.37 no.6
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• pp.305-310
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• 2020

To confirm the accuracy of the prediction of parturition day, the actual parturition days were compared with each day of the prediction of parturition day (n = 80). The accuracy of the prediction of parturition day was 80.0% (64/80) with a precision of ± 2 days from the first day of estrus after the first vaginal discharge, 97.5% (78/80) from the day when plasma progesterone concentrations increase above 4.0 ng/ml, and 72.5% (58/80) from the first day of diestrus, respectively. The accuracy of the prediction of parturition day by plasma progesterone concentration was higher than that by the first day of estrus and diestrus after the first vaginal discharge. These results indicated that the determination of plasma progesterone concentrations at estrus were a useful method for estimating of parturition day and for the reproductive management in pregnant bitches.

• Korean Journal of Environmental Agriculture
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• v.30 no.2
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• pp.144-152
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• 2011

BACKGROUND: Eutrophication occurs occasionally in flood control reservoirs around Juam lake in summer and early autumn. Lakeside macrophyte which is one of internal pollutants effects on water quality when it is submerged during water surface is rising after rainy season. METHODS AND RESULTS: To improve water the quality of water from water supply source and to establish the management plan of submerged plants in flood control reservoirs around Juam Lake, the removal and release velocities of nutrients by submerged plants in site 1 and 2 were investigated. Removal or release velocity constant (K) of COD by Carex dimorpholepis Steud in column was 0.07~0.18 $day^{-1}$ at 0~4 days after flooding, -0.23~-0.17 $day^{-1}$ at 5~19 days after flooding and -0.28~0.03 $day^{-1}$ at 20~33 days after flooding. Removal or release velocity constant (K) of T-N by Carex dimorpholepis Steud was 0.02 $day^{-1}$ at 0~4(8) days after flooding, -0.13~-0.10 $day^{-1}$ at 5(9)~33 days after flooding in column. Removal or release velocity constant (K) of T-P by Carex dimorpholepis Steud was 0.05~0.06 $day^{-1}$ at 0~4 days after flooding, -0.14~-0.09 $day^{-1}$ at 5~33 days after flooding. Release velocity constant (K) of nutrients by Miscanthus sacchariflorus Benth was lower than that by Carex dimorpholepis Steud. In site 1, the amount of nutrients release by Carex dimorpholepis Steud was 6,719 kg/month/area for COD, 2,397 kg/month/area for T-N and 466 kg/month/area for T-P. The amounts of nutrients release by Carex dimorpholepis Steud were higher than those by Miscanthus sacchariflorus Benth in both sites. CONCLUSION(s): The results of this study suggest that COD, T-N and T-P in water quality of Juam lake were strongly influenced by submerged plants in flood control reservoirs.

• Korean Journal of Animal Reproduction
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• v.19 no.2
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• pp.141-145
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• 1995

The effect of splenectomy on the concentration of progesterone in pregnant wistar rats showing 4-day regular estrous cycles more than two cycles were investigated. The day after mating with the same male animal was designated day 0 of pregnancy. Splenectomy was conducted on day 0 (early-S), 6 (middle-S) and 13 (late-S) of pregnant rat, respectively. Blood sample were collected at day 1, 7, 14 and 21 of pregnancy. Concentraton of serum progesterone was determined by emzyme-linked immunosorbent assay (ELISA) using specific antibodies and emzyme conjugate(progesterone peroxidase labeled). In normal pregnant rats, serum progesterone concentrations were increased significantly (P<0.05) on day 7 and 14 of pregnancy compared with on day 1 of pregnancy and then dramatically decreased on day 21. However in early and middle splenectomized rats, progesterone concentrations were significantly (P<0.05) decreased on day 7 and 14 of pregnancy compared with same day of normal rats. These observations indicate that luteotropic action and steroidogenesis by corpus luteum of ovary may be regulated by splenocytes in rat.

• Journal of Veterinary Clinics
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• v.36 no.1
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• pp.38-41
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• 2019

The aim of this study was to estimate of prediction of whelping day and to confirm the accuracy of prediction of whelping day in small pet bitches. The gestation length from the each based on days was $66.64{\pm}2.32days$ ($Mean{\pm}S.D$) when the Cornification index (CI) was over 90% after the first vaginal discharge, $64.65{\pm}2.87days$ from the day of CI peak, $63.46{\pm}1.63days$ from the day of ovulation by progesterone concentrations, and $57.67{\pm}2.43days$ from the first day of cytologic diestrus, respectively. The whelping day was estimated 66 days when the CI was over 90% after the first vaginal discharge, 64 days from the day of CI peak, 63 days from the day of ovulation by progesterone concentrations, and 57 days from the first day of cytologic diestrus, respectively. The accuracy of the prediction of whelping day was 90.0% with a precision of ${\pm}2days$ when the CI was over 90% after the first vaginal discharge, 77.5% from the day of CI peak, 86.2% from the day of ovulation by progesterone concentrations, and 81.2% from the first day of cytologic diestrus, respectively. These results indicated that the prediction of parturition day by vaginal cytology was useful method for management of reproduction and parturition in small pet bitches.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.46 no.3
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• pp.184-188
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• 2001

This study was conducted to find out the basic informations related to the rice cultivation using the infant seedlings. Infant seedlings with different nursery Periods were compared for the growth and grain yield of rice at the National Crop Experiment Station in 1997. The highest sound seedling ratio of 93.9% was observed in 8-day old seedling, followed by 88.9% of 12-day, 82.0% of 16-day, and 80.8% of 20-day, The endosperm remained 52.5% in the 8-day old seedling at transplanting and decreasingly with increasing nursery period. Missing hills at transplanting were more in 16-day and 20-day old seedling than in 8-day and 12-day old seedlings, 5.1-5.2% in 8-day and 12-day growing seedling, 6.7% in 16-day and 7.8% in 20-day old seedling. Rooting ability was observed highest in 8-day, followed by 12-day, 16-day and 20-day old seedling. The milled rice was lower by 5-16% in 12-day, 16-day and 20-day old seedling than in 8-day old seedling of 6.18 t/ha. It was found that the 8-day and 12-day old seedling provided more advantage for sound seedling ratio, endosperm remaining, missing hill during transplanting, rooting ability and grain yields than 16-day and 20-day old seedlings.

• Journal of Aquaculture
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• v.17 no.4
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• pp.262-267
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• 2004

Physiological responses (oxygen consumption, ammonia excretion, hemoglobin, red blood cell and white blood cell) of cultured eel, Anguilla japonica to vibration stress were studied in an indoor experimental system. Vibration of 76-93 dB (V) from an electric vibrator was provided in 15-minute intervals during daytime (0800-1800) over a ten day period. Oxygen consumption before the beginning of the experiment (0 day) was 83.9 mg $O_2$$.$kg$^{-1}$ ㆍhr$^{-1}$ . After 1, 5 and 10 days of stress respiration rate decreased by 37.5, 53.7 and 70.5%, respectively. Ammonia excretion showed a similar pattern to that of oxygen consumption. Ammonia excretion decreased by 80.1 % following 10 days of vibration stress. Blood hemoglobin concentration also decreased at 1, 3 and 10th day were 29.4% on day 1,83.9% on day 3 and 87.9% by day 10, while red blood cell counts at day 1 and day 10th were 59.8% and 84.7% lower than initial counts, respectively. The white blood cell count increased by 191.2% at day 7, dropping to 41.5% at day 10. Physiological activity was reduced by 50% following 3.4 days of vibration stress.

• International Journal of Human Ecology
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• v.3 no.1
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• pp.127-136
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• 2002

According to the Labor Standard Law in Japan which was enacted after World War II in 1947, all work hours for adult men, women, and youth were set at a maximum of eight hours per day and forty-eight hours per week. In other words, a six-day work week, with only one-day off, was set. Now we are in the full five-day and two-day off school system. The five-day school week influences on our home life. Students are highly enthused by the new system, in looking forward to their personal time they now have to play with friends, to relax, or just watch TV. To implement this new five-day school system positively and effectively, we should see the point at issue related to the two-day off system from a different angle, which suggests that we should see far ahead into the future.

• Journal of Animal Environmental Science
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• v.6 no.3
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• pp.185-190
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• 2000

TAO system and solid-liquid separation (28mesh filter and 200mesh filter) were applied in processing piggery slurry to see the reduction of N and P and to draw the efficiency in reducing manure application area. The results are as follows; 1. The amount of N and P in slurry of $4.6m^3/day$ was 22.5kg/day ($4,893mg/{\ell}$) and 7.32kg/day ($1,592mg/{\ell}$). 2. Reduction rate of N and P by TAO reactor was 9.9 kg/day (46.0%) and 3.47kg/day(34.0%). 3. Reduction rate of N and P by Solid-liquid separation was 10.5kg/day (46.6%) and 5.12kg/day (69.8%). 4. One the basis of the amount of nitrogen composting, the square size of liquid manure sprinkled area was reduced from 74.6ha/y to 39.0ha/y in rice paddy, and from 63.2ha/y to 33.0ha/y by the treatment.

• Journal of Nutrition and Health
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• v.36 no.7
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• pp.736-742
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• 2003

Soybeans have been a major protein source for many centuries in Korea. Soybeans contain phytochemicals which are isoflavones, biochemically active component. Isoflavone is a kind of phytoestrogen, structurally and functionally similar to estrogen. It has been reported that the breast milk and blood of breast feeding mothers who consume soy products contain isoflavones. This study was conducted to investigate the effects of soy milk supplement on the isoflavones (daidzein, genistein) concentration of breast milk, plasma and urine from breast feeding woman. Seventeen healthy women who delivered at Kyung Hee Medical Center were recruited. For the first 2 weeks after delivery, seventeen women ingested 400 ml (isoflavone 43.2 mg) of soy milk on the given time starting from the day of giving birth. For the next 2 weeks, soy milk ingestion was withdrawn. Dietary intake and anthropometric data were checked and breast milk, blood, and 24 hr urine samples were collected on the day of giving birth, the 14th (the last day of the supplement phase) and 28th (the last day of the withdrawal phase) day, respectively. HPLC analysis was used to measure the concentration of isoflavones. Dietary intakes of the subjects were inadequate for the Korean RDA regardless of soy milk supplementation. Especially, intakes of vit A, calcium, and iron were very low. The Anthropometric data such as LBM, TBW, PIBW, BMI checked on the day of 14th decreased and maintained their levels by the 28th day. Daidzein concentration in breast milk was not affected by soy milk supplementation. However, genistein concentration decreased by the 28th day (14th day: 0.89 $\pm$ 0.10 $\mu$g/ml, 28th day : 0.48 $\pm$ 0.07 $\mu$g/ml) (p < 0.05). Plasma daidzein and genistein concentrations were not changed by the 14th day and decreased by the 28th day (14th day: 49.64 $\pm$ 3.30 ng/ml, 26.72 $\pm$ 2.90 ng/ml, 28th day: 38.30 $\pm$ 4.40 ng/ml, 6.51 $\pm$ 0.50 ng/ml, respectively) (p < 0.05). Twenty four hour urine concentrations of daidzein and genistein significantly increased by the 14th day and decreased by the 28th day (14th day: 5.80 :t 0.3 mg/d, 4.17 $\pm$ 0.2 mg/d, 28th day: 6.72 $\pm$ 0.4 mg/d, 5.09 $\pm$ 0.5 mg/d, respectively) (p < 0.001). The rate of urinary recovery of daidzein was greater than that of genistein. The results of this study indicate that the supplement of dietary soy milk to the lactating women elevates the contents of isoflavone in the breast milk.

• Journal of the Korean Society of Food Science and Nutrition
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• v.19 no.5
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• pp.418-428
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• 1990

This study measured each daily intake and excretion of iron copper and cobalt of eight 20-26 years old college men during four weeks by means of analyzing their food intake urine and feces keeping their normal living pattern and maintenance body weight. This study also compared the actual measurement value of iron intake by atomic absorption spectrophoto-meter with the conversion value of it by food table. The results were as follows. Each person's average intake daily was iron 9.19±0.32mg/day, copper 0.56±0.06mg/day and cobalt 1.86±0.18mg/day. Each person's average urinary excretion daily was iron 0.53±0.07mg/day, copper 0.07±0.03mg/day and cobalt 0.13±0.01mg/day. Each person's average fecal excretion daily was iron 1.73±0.14mg/day copper 0.16±0.01mg/day and cobalt 0.46±0.08mg/day. The actual measurement value was 9.19±0.32mg/day and its conversion value 14.07±0.29mg/day : the former was 35% lower than the latter.