• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.350-350
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• 2021

한국건설기술연구원의 돌발홍수연구센터는 돌발홍수예측 시스템을 구축하여 2019년부터 전국에서의 돌발홍수정보를 제공하고 있다. 2019년에는 초단기 예측 모델인 Macgill Algorithm for Precipitation-nowcast by Lagrangian Extrapolation(MAPLE) 알고리즘으로부터 생산된 초단기 예측 강우를 활용하여 동(읍/면) 단위로 1시간 선행 예보를 제공하였다. 2020년에는 추가로 초단기 예측 강우와 수치예보 자료를 병합한 예측 병합 강우 자료를 생산하여 예측 선행시간을 1시간에서 3시간까지 확장하였다. 돌발홍수예측 시스템의 목표는 도시 및 산지소하천에서의 돌발홍수에 대응하기 위한 정보를 실시간으로 사용자에게 제공하여 수재해에 빠르게 대응하는 것이다. 이에 돌발홍수예측 시스템은 2019년부터 실시간으로 운영하여 홍수기에 보다 빠른 돌발홍수정보를 제공해왔다. 본 연구에서는 2020년 우기에 운영된 돌발홍수시스템에 대한 평가를 수행하였다. 이를 위해 부산(07.23), 대전(07.29), 서울(08.01), 경기-충북(08.02)에서 발생한 수재해 사례를 분석하였다.

• The Journal of the Acoustical Society of Korea
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• v.23 no.4
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• pp.288-295
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• 2004

Detection and localization of a slow and quiet target in shallow water environments is a challenging problem for which it is well known that snapshot is deficient because of a fast and strong interferer. This paper presents waveguide interference filtering technique that mitigate strong interferer problems in adaptive matched field processing. MCM (multiple constraint method) based on NDC (null direction constraint) has been proposed for new spatial interferer filter. MCM-NDC using replica force a interferer component to be filtered through CSDM (cross-spectral density matrix). This filtering have an effect on sidelobe reduction and restoring of signal gain of a quiet target. This technique was applied to a simulation on Pekeris waveguide and vertical array data from MAPLE03 (matched acoustic properties and localization experiment) in the East Sea and was shown to improve SBNR (signal-to-background-and-noise ratio) over the standard MVDR (minimum-variance distortionless response) and NSP (null space projection) technique.

• Conservation Science in Museum
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• v.5
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• pp.31-36
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• 2004

The purpose of this experiment was to check the effects on metal corrosion of the 6 types of tree (Ash tree, Japanese cedar, black walnut, western hemlock, paulownia coreana and maple) which are currently being used, or the use of which is under study, by the Museum. As a method of test, an Oddy Test was conducted where the materials to be tested and the metal test piece are exposed to a specified temperature and humidity for a long period of time and the effects of materials on the test piece are observed. The results of the Oddy Test conducted on all 6 types of tree showed slight difference in the form of metal corrosion, and except for the blank, corrosion occurred on the entire surface of most iron (Fe) and lead (Pb) test pieces. Minor level of discoloration was noted in all test pieces of copper (Cu) even though different levels.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.11
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• pp.6739-6745
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• 2014

Acer tegmentosum Maxim (AT) is a species of the maple genus, which is native to North-Eastern China and Korea. Traditionally, AT has been already used for pain relief in Korea. On the other hand, its antidepressant-like activity and related molecular mechanisms is not completely understood. Using the Forced Swimming Test (FST), the effects of a subacute treatment with AT(100, 200, and 400 mg/kg, p.o.) on the immobility and FST-induced changes to the immune parameters, cortisol, ACTH, and cytokine, in rats were investigated. The tendency of immobility showed a dose-dependent decrease in FST. The levels of cortisol, IL-6 and $IL-1{\beta}$ in the peripheral blood were increased significantly after FST exposure. Overall, these results suggest that AT treatment can decrease the immobility time and the release of pro-inflammatory cytokines in the FST, suggesting that the anti-inflammatory effects of AT might be involved in the antidepressant-like effect.

• Clinical and Experimental Pediatrics
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• v.55 no.9
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• pp.322-329
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• 2012

Purpose: Aeroallergens are important causative factors of allergic diseases. Previous studies on aeroallergen sensitization rates investigated patients groups that had visited pediatric allergy clinics. In contrast, we investigated sensitization rates in a general population group of elementary school to teenage students in Incheon, Jeju, and Ulsan. Methods: After obtaining parental consent, skin-prick tests were performed on 5,094 students between March and June 2010. Elementary school students were tested for 18 common aeroallergens, whereas middle and high school students were tested for 25 allergens. The 25 allergens included Dermatophagoides pteronyssinus, Dermatophagoides farinae, pollen (birch, alder, oak, Japanese cedar, pine, willow, elm, maple, Bermuda grass, timothy grass, rye grass, orchard grass, meadow grass, vernal grass, mugwort, Japanese hop, fat hen, ragweed, and plantain), and mold (Penicillatum, Aspergillus, Cladosporium, and Alternaria). Results: The sensitization rates in descending order were 25.79% (D. pteronyssinus ), 18.66% (D. farinae ), 6.20% (mugwort), and 4.07% (willow) in Incheon; 33.35% (D. pteronyssinus ), 24.78% (D. farinae), 15.36% (Japanese cedar), and 7.33% (Alternaria) in Jeju; and 32.79% (D. pteronyssinus), 30.27% (D. farinae), 10.13% (alder), and 8.68% (birch) in Ulsan. The dust mite allergen showed the highest sensitization rate among the 3 regions. The sensitization rate of tree pollen was the highest in Ulsan, whereas that of Alternaria was the highest in Jeju. The ragweed sensitization rates were 0.99% in Incheon, 1.07% in Jeju, and 0.81% in Ulsan. Conclusion: The differences in sensitization rates were because of different regional environmental conditions and distinct surrounding biological species. Hence, subsequent nationwide studies are required.

• The Journal of the Korean life insurance medical association
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• v.18
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• pp.107-110
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• 1999

The disorders of congenital metabolic errors causing mental retardation can be prevented by early diagnosis and treatment. We analysed 144,000 neonatal blood samples for phenyketonuria(PKU), maple syrup urine disease(MSUD), homocystinuria(HCU) and histidinuria(HE) by bacterial inhibition method, and galactosemia(GAL) by Paigen method. In our survey, the positive were 4 samples in PKU(4mg/dl;2, 6mg/dl;1, 8mg/dl;1), 8 samples in MSUD(4mg/dl;2, 6mg/dl;2, 8mg/dl;3, 10mg/dl;1), 4 samples in HCU(4mg/dl;2, 6mg/dl;2), 4 samples in Galactosemia(4mg/dl;2, 6mg/dl;1, 8mg/dl;1), respectively. while, no one was positive in HE. The frequncy rate were 1/36,000 for PKU, HCU and GAL, 1/18,000 for MSUD, respectively. But those for HE couldn't be detected in our survey. In this study, the hightest frequency rate was 1/18,000 of MSUD, following were 1/36,000 for PKU, HCU and GAL, respectively. As results our data, it is our opinion that neonatal screening should be performed in terms of national policies for ealy diagnosis and theraphy.

• Journal of Korean Medical classics
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• v.29 no.2
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• pp.31-54
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• 2016

Objectives : The goal of this paper is to research what affected diagrams of liver originated from Mingtangzangfutu while they were changed. Methods : Diagrams of liver in Traditional Chinese and Japanese medical books had been gathered as many as possible. After they were divided into ones which were originated from Mingtangzangfutu and the others, diagrams originated from Mingtangzangfutu, were again classified into 4 filiations according to Huang Longxiang(黃龍祥)'s standard. Apart from his classification, they were analysed by 4 form factors, e.g. shape, number, veins and petiole of leafs. Results : Reliability of this methods had been confirmed by the correspondence with Huang's 14 standard books, before 29 diagrams of liver were derived from 33 books including 13 books that Huang had already suggested. The lobes of liver in most of diagrams resembled 7 lanceolate or long oval leafs, or a maple leaf with 6 indentations, 4 left lobes and right 3 ones. In most of diagrams, veins of leafs were described variously, and petioles of leafs were drawn more shortly or longer. Analysing 29 diagrams by 4 form factors proved that Huang's classification had crossing features among 4 filiations. This phenomenon implied the painters or doctors drawing diagrams might not convince if the shape of liver was correct or not. Although veins and petiole of leafs in diagrams of liver could be compared with tissues in liver in modern human anatomy, diagrams were not been affected by dissection from Yuan(元) to middle Qing(淸) dynasty. Conclusions : Lingshu(靈樞), Nanjing(難經) and Wang Bing would had constantly acted on 29 diagrams of liver, since diagram of liver originated from Mingtangzangfutu, appeared first in Zhenjiujuying(鍼灸聚英). But they did not come from dissection during same periods.

• Conservation Science in Museum
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• v.20
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• pp.93-106
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• 2018

The musical instruments displayed in Korean Museums consist of various materials such as wood, stone, metal, leather, and soil. As for instruments manufactured of organic materials, as time passed, they became damaged due to physical, chemical and biological effects. In order to restore these instruments, studies on the materials as well as the manufacturing techniques should be simultaneously conducted because of the characteristics of sound making instruments. In this study, 17th century Double bass were chosen as the model for the restoration study. The type of wood was identified and the finishing layer was analyzed. To investigate the finishing layer, the surface observation was conducted and the component analysis was also conducted by using both FT-IR and SEM-EDS. As a result, the species of wood were identified as the maple trees. In case of the finishing layer of it, the diluted Goma Lacca, a type of resin, with alcohol as the main solvent was covered for varnishing layer. These results were combined to determine the restoration of Double bass Maggini Giovanni Paolo varnishing layer and by this Violin was made.

• The Journal of Pediatrics of Korean Medicine
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• v.13 no.2
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• pp.41-77
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• 1999

The purpose of this research is that infant artificial feeding products is used in clonic with the study on characteristic, ingredients and indication of geneal and special modified milks. The result is as follows. 1. The main ingredients of four company products-Maeil , Namyang, Pasteur, Aebout is similar but the functional is different 2. General infant formula is divided into 100days, 5-6months, 12months, 24months and 36months out of consideration for growth and development of infant. 3. The indication and sorts of the special infant formula used at a hospital is as follows. PKU-1, PKU-2 formula is available for phenylketonuria. MPA formula is available for propionic acidemia and methylmalonic acidomia. UCD is available for urea cycle disorder Leucine-free formula is available for isovaleric acidemia. Maeil LP is available for hypocalcemia. MCT formula is available for indigestion and malabsorption of fat. BCAA-free formula is available for Maple syrup urine disease. Protein-free formula is available for limit of protein uptake or mixture of peculiar amino acid or higher uptake of mineral, vitamin, calory. Methionine-free formula is available for homocystinuria and hypermethioninemia. Premature infant is available for premature and low birth weight. 4. The special infant formula published in nation is as follows. Maeil soy A, Maeil MF1, Namyang hope doctor and Maeil HA is available for diarrhea. Maeil HA, Maeil HA-21 and Namyang hope allergy is available for hypoallergy. Maeil soy A is available for diarrhea of milk allergy. Maeil MF1 or Namyang hope doctor is available for acute bacterial or viral temporal diarrhea. Maeil HA is available for allergic chronic diarrhea. Maeil HA and Namyang hope allergy as eHP-formula is available for chronic diarrhea for lactose intolerance and milk allergy. Maeil-21 as pHP-formula for neonates with allergy family, allergic symptoms such as atopic dermatitis, asthma except digestive system.

• Journal of The Korean Society of Inherited Metabolic disease
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• v.11 no.1
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• pp.52-73
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• 2011

Since we have started organic acid analysis on Jul. 1997, we have been collecting data about organic acidemias in Korea. The data presented here is our 3 years experience in organic acid analysis. We have collected 712 samples from major university hospitals all over the Korea, large enough for relatively accurate incidence of organic acid disorders. We are using solvent extraction method with ethylacetate, MSTFA for derivatization and quantitation of 83 organic acids simultaneously. Out of 712 patients sample, 498 patients sample (70%) showed no evidence of organic acid abnormalities. Out of 214 remaining samples we have found very diverse disorders such as methylmalonic aciduria(6), propionic aciduria (10), biotinidase deficiency (6), maple syrup urine disease (3), isovaleric aciduria (4), tyrosinemia type II (4), tyrosinemia type IV (1), glutaric aciduria type I (1), glutaric aciduria type II (22), 3-methylglutaconic aciduria type I (3), 3-methylglutaconic aciduria type III (7), HMG-CoA lyase deficiency (1), hyperglyceroluria (2), cytosolic 3-ketothiolase deficiency (55), mitochondrial 3-ketothiolase deficiency (3), 3-hydroxyisobutyric aciduria (2), L-2-hydroxyglutaric aciduria (2), fumaric aciduria (2), lactic aciduria with combined elevation of pyruvate (most likely PDHC deficiency) (28), lactic aciduria without combined elevation of pyruvate (most likely mitochondrial respiratory chain disorders) (35), SCAD deficiency (3), MCAD deficiency (1), 3-methylcrotonylglycineuria (1), orotic aciduria (most likely urea cycle disorders) (7) and 2-methylbranched chain acyl-CoA dehydrogenase deficiency (1). In conclusion, though the incidence of indivisual organic acidemia is low, the incidence of overall organic acidemia is relatively high in Korea. Most of the patients showed some signs of neurological dysfunction. In other words, organic acid analysis should be included in the diagnostic work up of all neurological dysfunctions.