• Clinical and Experimental Pediatrics
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• v.49 no.2
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• pp.212-216
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• 2006

Neurocutaneous melanosis is a rare congenital syndrome characterized by the presence of large or multiple congenital melanocytic nevi and benign pigment cell tumors of the leptomeninges. Neurocutaneous melanosis is thought to represent an error in the morphogenesis of embryonal neuroectoderm. We experienced a neonate who presented with giant, dark colored pigmented nevi covering chest, abdomen, neck and arms, with satellite lesions. Magnetic resonance image showed a nodular hyperintense lesion in the amygdala of the right temporal lobe, and T1-weighted images showed hyperintensities in the adjacent leptomeninges. We report a rare case of neurocutaneous melanosis with a brief review of related literature.

• Journal of Food Hygiene and Safety
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• v.21 no.3
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• pp.129-135
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• 2006

In order to provide fundamental data of food circulation policy, we performed monitoring the safety of the imported food which was circulating through Gwangju from March to October, 2005. Acid and peroxide value which are barometers for evaluation of the quality of lipid were investigated in 130 samples of imported oil treatment food. Not-permitted tar pigment and artificial sweetner were investigated in 139 candies by TLC and HPLC. The content of sulfur dioxide in 129 samples of dried fishery products and dried fruits was investigated by Monier-Williams method. In 130 samples of imported oil treatment food, 9 samples (6.9%) were incongruent with acid value, 6 samples (4.6%) with peroxide value and 4 samples (3.1%) with acid value simultaneously with peroxide value. In 139 imported candies, not-permitted artificial sweetner were found in 2 samples (1.4%). In 129 samples in which sulfur oxide was analyzed,4 samples (3.1%) were incongruent. Finally, in total 398 samples in which this study was analyzed, 25 samples (6.3%) were incongruent.

• Korean Journal of Soil Science and Fertilizer
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• v.21 no.1
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• pp.41-47
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• 1988

A laboratory experiment was conducted to find out the abilities of siderophore formation and competition of $Fe^{3+}$ and $Mn^{2+}$ absorption in synthetic medium with inoculation of fluorescence forming pseudomonas and soil saprophytic fungi as Stachybotrys chatarum, Fusarium solani, and F. oxysporum. The results obtained were summarized as follows; 1. The concentration of siderophore in synthetic medium with inoculation of Pseudomonas putida pt-II was increased (with progress of incubation time). 2. The negative correlation was obtained with the increase of $Fe^{3+}$ ion concentration and siderophore in synthetic medium with inoculation of fluorescence forming pseudomonas and soil saprophytic fungi. 3. The fresh weight of fungal hyphae was decreased with the increase of siderophore in synthetic medium. 4. There was insignificant relationship between the concentration of $Mn^{2+}$ and the concentration of siderophore while the positive correlation was obtained with the increase of fresh weight of fungal hyphae.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.24 no.2
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• pp.282-297
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• 2019

Detection of mesoscale oceanic eddies using satellite data can utilize various ocean parameters such as sea surface temperature (SST), chlorophyll-a pigment concentration in phytoplankton, and sea level altimetry measurements. Observation methods vary for each satellite dataset, as it is obtained using different temporal and spatial resolution, and optimized data processing. Different detection results can be derived for the same oceanic eddies; therefore, fundamental research on eddy detection using satellite data is required. In this study, we used ocean color satellite data, sea level altimetry data, and infrared SST data to detect mesoscale eddies in the East Sea and compared results from different detection methods. The sea surface current field derived from the consecutive ocean color chlorophyll-a concentration images using the maximum cross correlation coefficient and the geostrophic current field obtained from the sea level altimetry data were used to detect the mesoscale eddies in the East Sea. In order to compare the eddy detection from satellite data, the results were divided into three cases as follows: 1) the eddy was detected in both the ocean color and altimeter images simultaneously; 2) the eddy was detected from ocean color and SST images, but no eddy was detected in the altimeter data; 3) the eddy was not detected in ocean color image, while the altimeter data detected the eddy. Through these three cases, we described the difficulties with satellite altimetry data and the limitations of ocean color and infrared SST data for eddy detection. It was also emphasized that study on eddy detection and related research required an in-depth understanding of the mesoscale oceanic phenomenon and the principles of satellite observation.

• Journal of Chest Surgery
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• v.37 no.1
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• pp.1-10
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• 2004

Background: Currently, the cardiopulmonary machine with non-pulsatile pumps, which are low in internal circuit pressure and cause little damage to blood cells, is widely used. However, a great number of experimental studies shows that pulsatile perfusions are more useful than non-pulsatile counterparts in many areas, such as homodynamic, metabolism, organ functions, and micro-circulation. Yet, many concerns relating to pulsatile cardiopulmonary machines, such as high internal circuit pressure and blood cell damage, have long hindered the development of pulsatile cardiopulmonary machines. Against this backdrop, this study focuses on the safety and effectiveness of the pulsatile cardiopulmonary machines developed by a domestic research lab. Material and Method: The dual-pulsatile cardiopulmonary bypass experiment with total extracorporeal circulation was conducted on six calves, Extracorporeal circulation was provided between superior/inferior vena cava and aorta. The membrane oxygenator, which was placed between the left and right pumps, was used for blood oxygenation. Circulation took four hours. Arterial blood gas analysis and blood tests were also conducted. Plasma hemoglobin levels were calculated, while pulse pressure and internal circuit pressure were carefully observed. Measurement was taken five times; once before the operation of the cardiopulmonary bypass, and after its operation it was taken every hour for four hours. Result: Through the arterial blood gas analysis, PCO2 and pH remained within normal levels. PO2 in arterial blood showed enough oxygenation of over 100 mmHg. The level of plasma hemoglobin, which had total cardiopulmonary circulation, steadily increased to 15.87 $\pm$ 5.63 after four hours passed, but remained below 20 mg/㎗. There was no obvious abnormal findings in blood test. Systolic blood pressure which was at 97.5$\pm$5.7 mmHg during the pre-circulation contraction period, was maintained over 100 mmHg as time passed. Moreover, diastolic blood pressure was 72.2 $\pm$ 7.7 mmHg during the expansion period and well kept at the appropriate level with time passing by. Average blood pressure which was 83$\pm$9.2 mmHg before circulation, increased as time passed, while pump flow was maintained over 3.3 L/min. Blood pressure fluctuation during total extracorporeal circulation showed a similar level of arterial blood pressure of pre-circulation heart. Conclusion: In the experiment mentioned above, pulsatile cardiopulmonary machines using the doual-pulsatile structure provided effective pulsatile blood flow with little damage in blood cells, showing excellence in the aspects of hematology and hemodynamic. Therefore, it is expected that the pulsatile cardiopulmonary machine, if it becomes a standard cardiopulmonary machine in all heart operations, will provide stable blood flow to end-organs.

• Korean journal of food and cookery science
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• v.27 no.6
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• pp.643-651
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• 2011

The purpose of this study was to investigate the perceptions, intake levels and information needs of elementary school students on artificial food colorants in order to provide better understanding and proper dietary education to these students. From May to June 2010, a survey was conducted from 315 elementary school students at fifth and sixth grade level who were living in Seoul. The questionnaire was distributed by 14 elementary school teachers to their classroom students. The results showed that food safety was regarded as the most important factor in purchasing food items, and artificial food colorants were the most interested among various food additives. Although there was a lack of general knowledge and the students' estimated intake levels of artificial food colorants from processed foods were comparatively low, most (82.7%) believed that artificial food colorants were dangerous for health. The information they wanted to know most was the safety, necessity, and function of artificial food colorants, in order. Above results suggested the necessity of providing accurate information on artificial food colorants to elementary school students possibly by developing educational materials which can improve the perceptions on artificial food colorants and encourage a safe dietary life.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.1
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• pp.76-84
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• 2015

This study aimed to investigate awareness of processed foods and chronic disease in high school students (male 94 and female 85) in the Yongin area. Awareness of chronic disease caused by excessive intake of processed foods was 83.0% and 91.8% in male and female students, and the most harmful processed food was instant noodles (34.1%). The most fearful chronic disease was cancer (25.5%) and obesity (25.5%) in males, whereas female answered obesity (34.1%). Awareness of synthetic preservatives was the most negative answer among food additives, and the most useful information was harmfulness of food additives. Percentages of correct answers towards cardiovascular disease-causing food components, including lipids, saturated fat, cholesterol, and trans fat, and dietary fiber for prevention of obesity were 57.0% and 54.2%, respectively. The percentage of correct answers towards developing hypertension by excessive intake of sodium was very low at 24.6%. Consequently, high school students generally showed a negative attitude towards processed foods without accurate information related to prevention or food components causing chronic disease, especially sodium. Thus, an appropriate program and persistent nutrition education are required for healthy food choices to prevent chronic disease among processed foods.

• Journal of Practical Agriculture & Fisheries Research
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• v.21 no.2
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• pp.35-47
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• 2019

The mycelial growth of P. coccineus strain was good in PDA and YMA, but mycelial growth was low in MEA. Light irradiation during the incubation period affected the pigment formation and density of mycelia. Mushroom of P. coccineus strain was able to produce fruiting bodies in both bottle and bag cultivation, and oak sawdust was found to be the most suitable substrate for spawn culture and cultivation. In artificial cultivation using sawdust medium, fruiting body was grown to the extent that visual observation was possible from the 15th day, and it formed about 5 days fast in the treatment group with low relative humidity. From 40 to 45 days of mushroom development, mature fruiting bodies could be harvested, and the lower relative humidity of the growing room favored mushroom development and growth. Antioxidant activity of fruiting bodies harvested from artificial cultivation showed that ABTS radical scavenging activity of bottle-cultivated and wild fruit bodies were shown at 505㎍/㎖ and 515㎍/㎖, respectively. However, fruiting bodies harvested in bag cultivation were high at 910㎍/㎖. As a result of DPPH radical scavenging activity, all extracts were found to be inactive, exhibiting IC₅₀ value of more than 2,000㎍/㎖ concentration. The ethyl acetate extract of mushrooms obtained from bottle cultivation showed the highest activity with 1,550㎍/㎖ IC₅₀ value. Methanol extract of wild fruit bodies had the highest ABTS radical scavenging activity at the same concentration (10mg/㎖).

• Korean Journal of Ichthyology
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• v.11 no.1
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• pp.86-93
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• 1999

Artificial fertilization of flounder, Limanda herzensteini caught at Pohang brook was performed in April 13, 1995 and hatched larvae were reared for 25 days to describe the development of eggs and the morphogenesis of larvae. The fertilized egg was buoyant, colorless and spherical in shape, measuring 0.86~0.96 mm in diameter (mean: 0.90 mm), The egg has no oil globule, and its perivitelline space was narrow. Hatching in the indoor tank with $16.0^{\circ}C$ in mean water temperature started from the 64 hours after fertilization. The newly hatched larva, measuring about 2.80 mm in total length, had 10~11+25~27=35~38 myomeres. The anus is open at about the anterior point of the body. The 3 to 4 days old larva was 3.90 mm in total length. In this larva the eyes were black and the mouth was open. The yolk was consumed in 8 to 9 days. In 20 to 22 days after hatching, the larvae grew 6.1 mm in total length. The eyes were located symmetry on both sides of head.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.29 no.4
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• pp.497-502
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• 1996

Artificial fertilization of ice fish, Mypomesus transpaciticus nipponensis caught at Milyang-river and Osib-chun brook was performed in March 24, 1990, and the hatched larvae were reared for 25 days to describe the development of eggs and larvae. Fertilized eggs were spherical in shape, measuring $0.85\~1.05\;mm$ in diameter (mean: 0.97 mm) and translucent adhesive with many small-sized oil globules on the surface. Hatching in the indoor tank started from the 170 hours after fertilization under $16.5^{\circ}C$ water temperature. Newly-hatched larvae were measured $3.85\~4.25\;mm$ in total length (mean: 4.05 mm), and mouth and anus were not yet open. They had one yolk sac on the anterior part of abdomen, straight-type's notochord, and $52\~54$ myotomes. The larva of 5 days old transformed to postlarval stage and measured $5.20\~5.65\;mm$ (mean: 5.37 mm) in total length. As the yolk sac was completely absorbed, mouth and anus were open, and they fed rotifers vigorously. In 20 days after hatching, the larvae grew to 8.38 mm in TL, and the caudal notochord flex at $45^{\circ}$. In 25 days after hatching, total length reached 9.63 mm. The pan of the fin-fold of the future dorsal and anal fins became high.