• Journal of Korean Medical classics
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• v.18 no.1 s.28
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• pp.67-72
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• 2005

통과분석(通過分析)${\ulcorner}$동의보감(東醫寶鑑)${\lrcorner}$양명형증용약여포괄중경적(陽明形證用藥？包括仲景的)${\ulcorner}$상한론(傷寒論)${\lrcorner}$재내적주요의학가대양명병적개념(在內的主要醫學家對陽明病的槪念), 득출여하결론(得出如下結論): 1.${\ulcorner}$동의보감(東醫寶鑑)${\lrcorner}$적양명형증용약당중이대편비결위중심, 미사용가이낭괄양명병증재내적위가실저개개념, 상세나열출양명병적구체증상 내급양명병하료정의(來給陽明病下了定義). 병미장대편비결작위대표성증상(幷未將大便秘結作爲代表性症狀), 이시근거표본관계분성경병여부병진행설명. 이기육작위표(以肌肉作爲表), 위작위리적표리개염분석기증상(胃作爲裏的表裏槪念分析其症狀). 2. 기찰급양명병하정의적의서(畿察給陽明病下定義的醫書), 발현제료중경적(發現除了仲景的)${\ulcorner}$상한론(傷寒論)${\lrcorner}$여기주석본성무이적${\ulcorner}$주해상한론(注解傷寒論)${\lrcorner}$이외(以外), 도장목동(都將目疼), 비건(鼻乾), 불득면부간주양명병대표증상(不得眠部看做陽明病代表症狀). 저충정의방식시종송도명대적보편관점 3. 재(在)${\ulcorner}$동의보감(東醫寶鑑)${\lrcorner}$당중작위인용서목적${\lrcorner}$의학입문(醫學入門)${\ulcorner}$, 근거표본(根据標本), 표리개염대증상진행료분류(表裏槪念對症狀進行了分類). 비기지전단순적대증상적서술갱구유조리성. 저가이간주시집당시제다견해지대성(這可以看做是集當時諸多見解之大成), 대병정적분석변적갱가구체. 선택(選擇)${\lrcorner}$의학입문(醫學入門)${\ulcorner}$작위인체서목(作爲引滯書目), 가이인위시채납료당시적최신견해, 병차흡수료용역장악병정적이증상위주적기술방식(幷且吸收了容易掌握病情的以症狀爲主的記述方式). ${\lrcorner}$의학입문(醫學入門)${\ulcorner}$취시집이상관점위일체적대성(就是集以上觀点爲一體的大成). 4. 여태양병당중양형증용약진행비교, 관찰병정적주요관점(觀察病情的主要觀点), 양자도추종료(兩者都追從了)${\lrcorner}$의학입문(醫學入門)${\ulcorner}$적견해(的見解). 단시태양형증용약몰유대몰위초출중경태양병적제망(但是太陽形證用藥沒有大沒圍超出仲景太陽病的提網), 상비지하양명형증용약기몰유인용(相比之下陽明形證用藥旣沒有引用) 중경적(仲景的)${\ulcorner}$상한론(傷寒論)${\lrcorner}$, 대증상적설명야대상경정(對症狀的設明也大相徑庭). 5. 양명형증용약당중몰유인용중경적위가실관점, 이시리용미악한(而是利用微惡寒), 발열(發熱), 갈(渴), 유한(有汗), 목동(目疼), 비건(鼻乾), 조한(潮汗), 폐삽(閉澁), 만갈(滿渴), 광섬, 불면등증상진행설명(不眠等症狀進行說明), 비기장악륭명병작위장부질병(比其掌握隆明病作爲臟腑疾病), 이해위이열위주적상당우양명속성적질병.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.33 no.4
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• pp.225-235
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• 2020

Ultrasonic investigation of damage detection has been widely used for non-destructive testing of various concrete structures. This study focuses on damage detection analysis with the aid of wave propagation in two-phase composite concrete with aggregate (inclusion) and mortar (matrix). To fabricate a realistic simulation model containing a variety of irregular aggregate shapes, the mesh generation technique using an image processing technique was proposed. Initially, the domains and boundaries of the aggregates were extracted from the digital image of a typical concrete cut-section. This enables two different domains: aggregates and mortar in heterogeneous concrete sections, and applied the grids onto these domains to discretize the model. Subsequently, finite element meshes are generated in terms of spatial and temporal requirements of the model size. For improved analysis results, all meshes are designed to be quadrilateral type, and an additional process is conducted to improve the mesh quality. With this simulation model, wave propagation analyses were conducted with a central frequency of 75 kHz of the Mexican hat incident wave. Several void damages, such as needle-shaped cracks and void-shaped holes, were artificially introduced in the model. Finally, various formats of internal damage were detected by implementing energy mapping based signal processing.

• Journal of Gastric Cancer
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• v.10 no.1
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• pp.40-44
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• 2010

The natural history of gastric cancer is unclear. We report here on a rare case of advanced gastric cancer for which we performed curative gastrectomy 78 months after the diagnosis. A 74-year-old woman with epigastric pain underwent esophagogastroscopy in January, 2000 and she was diagnosed with advanced gastric cancer. Suspicious omental cake was noted on CT. After refusing all kinds of treatment, she underwent a follow up CT scan on September, 2002, which no longer suggested omental cake. She once again refused treatment, but she visited the hospital in June, 2006 due to severe epigastric pain and a decreased oral intake. Abdominal CT showed no distant metastasis, and so radical subtotal gastrectomy with regional lymph node dissection was performed in July, 2006 and the TNM stage was T2bN1M0 (stage II).

• Korean Chemical Engineering Research
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• v.49 no.2
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• pp.244-249
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• 2011

In this study, performance and economic analysis of 500 MWe coal-fired power plant with $CO_{2}$ capture process was performed. For this purpose, chemical absorption method which is commercially available and most suitable for thermal power plant was studied and a criteria for technical and economic assessment of power plants suggested by IEA Greenhouse Gas R&D Programme was used. And we performed the sensitivity analysis focused on regeneration energy which exceed half of the total capture energy. Based on MEA(Monoethanoleamine) as a main chemical solvent and 3.31 GJ/ton$CO_{2}$ regeneration energy in the stripper, net power efficiency was reduced from 41.0% (no capture) to 31.6%(with capture) and the cost of $CO_{2}$ avoided was estimated 43.3 $/ton$CO_{2}$. And in case of 2.0 GJ/ton$CO_{2}$ regeneration energy, the cost of $CO_{2}$ avoided was calculated as 36.7 $/ton$CO_{2}$.

• Journal of Periodontal and Implant Science
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• v.33 no.2
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• pp.311-319
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• 2003

치주조직재생을 도모하기 위한 전통적인 시술방법으로는 여러 가지 골이식재를 이용한 골이식술이 오래 전부터 이용되고 있다. 이번 실험의 목적은 장,단기간의 신생골의 형성과 CPP의 흡수를 비교하여 골이식재로서 Calcium Polyphosphate(CPP)를 평가하는 것이다. 이번 실험에 사용된 CPP는 무수 $Ca(H_2PO_4)$를 condensation하여 무결정의 $Ca(PO_3)_2$를 얻고 이를 용융하고 냉각시킨후 분쇄하여 얻은 것으로 키토산이나 $Na_2O$를 첨가한 후 3세된 비글견에 이식하여 관찰하였다. 양성 대조군으로 동결탈회건조골을 이용하였다. 조직학적으로 3개월 소견과 같이 섬유조직의 게재없이 신생골의 형성이 관찰되었다. 12개월 후의 신생골의 형성은 3개월 결과에 비해서 동결탈회건조골이나 키토산, $Na_2O$를 넣은 CPP 과립에서 더 많은 비율로 나타났다. 음성 대조군과 이식재를 넣은 군간에는 유의성이 있는 것으로 나타났고(p<0.05), 또한 키토산을 첨가한 CPP 과립과 $Na_2O$를 첨가한 CPP 과립 사이에는 신생골의 형성에 유의성이 없었다. 이식한 CPP 과립의 경우 흡수소견이 3개월 결과에 비해 크게 증가하지 않았다. 이번 실험에서는 첨가물에 상관없이 CPP 과립은 골유도성과 생체적합성을 보였다. 그러나 흡수속도가 매우 느려 신생골로 대체되는 여부를 알 수 없었다. 향후 연구에서는 흡수속도를 증가시킬 수 있는 적당한 CPP 형태와 첨가물을 밝혀내어야 할 것이다.

• Journal of the Korean Electrochemical Society
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• v.19 no.3
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• pp.95-100
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• 2016

A method for electrochemical degradation of the perchlorate anion ($ClO_4{^-}$) using mercury film electrode has been studied. Electrochemical method has relatively simple pre-treatment. However, electrochemical method should avoid interference from hydrogen evolution at the applied potential to degradation of perchlorate ion, and thus applied electrode should have large hydrogen overvoltage which suppressed the hydrogen evolution at the working reduction potential to prevent hydrogen evolution. In this study, we used mercury film electrode as a working electrode which has a large overvoltage. Ag / AgCl (sat. NaCl) was used as a reference electrode, and platinum was used as a counter electrode. Mercury film electrode was made by cyclic voltammetry (CV) method. The deposition time was decided as 10 minute, and the stability of the mercury electrode in perchlorate solution was confirmed by CV. The reduction potential of perchlorate was checked by using CV method, and decomposition of perchlorate was performed by using chronoamperometric (CA) method. Also, ion chromatography (IC) was used to confirm the degradation rates of perchlorate.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.7 no.1
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• pp.24-30
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• 2004

Purpose: Acute diarrhea in young children is a major problem in pediatric hospitals worldwide. We evaluated the clinical efficacy of orally administered Lactobacillus acidophilus in the treatment of acute diarrhea in children. Methods: From September 2002 to July 2003 at National Police Hospital 41 children aged 3 months to 5 years with acute diarrhea were enrolled in this study. The patients were randomized to one of two groups to receive either $0.5{\times}10^8$ colony forming unit (CFU) of L. acidophilus or matching placebo on admission and every 8 hours during hospitalization. Results: The mean duration of diarrhea in all 41 children was decreased (p=0.001) in the L. acidophilus (40.5 hours) group compared to the placebo (56.6 hours) group. Stool frequency was also reduced (p=0.01) on the 3rd day in the L. acidophilus group. Rotavirus was identified in 58% of the patients. The decrease of duration of diarrhea was more significant in rotavirus-negative patients (p=0.002) compared to the rotavirus-positive patients (p=0.027). Conclusion: L. acidophilus shows to be an effective therapeutic agent in acute diarrhea in children. Further studies are needed to confirm the present findings.

• Development and Reproduction
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• v.5 no.2
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• pp.123-129
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• 2001

When mammalian oocytes undergo maturation, cumulus cells surrounding the oocyte exhibit remodeling of their structure known as cumulus expansion. Many molecules including hyaluronic acid participate in this remodeling. The present study aimed to investigate a possible existence of matrix metalloproteinases(MMPs) in the extracellular matrix(ECM) of human oocyte-cumulus complex. ECM was extracted from the human oocyte-cumulus complex. Gelatin gel zymogram of ECM exhibited 7 gelatinases having molecular weight of 300kDa, 240kDa, 200kDa, 180kDa, 116kDa, 97kDa, and 84kDa. This gelatinase profile was very different from that of ovarian mural granulosa cell extract or white blood cell extract, indicating that the oocyte-cumulus complex donating ECM was free from other than cumulus cells. When ethylenediaminetetraacetic acid or 1', 10'-phenanthroline was added to the reaction buffer during zymographic development, almost gelatinase activities were abolished, suggesting that they were MMPs. Following incubation of ECM in the presence of aminophenylmercuric acetate, an activator of proMMPs, 4 gelatinases of 240kDa, 180kDa, 97kDa, and 84kDa disappeared with the concomitant appearance of 80kDa, 65kDa, and 60kDa gelatinases. Based upon these observation, it is suggested that ECM of the human oocyte-cumulus complex consists of gelatinases, presumed to be MMP-2 and MMP-9 isoforms.

• The Korean Journal of Nuclear Medicine Technology
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• v.21 no.2
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• pp.13-27
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• 2017

Purpose In the procedure of domestic medical radioactive self-disposal, there are many requests of supplementation and difficulties on the screening process. In this regard, presentation of basic guideline will improve the work processing efficiency of medical institution radioactive waste. From 2015 to 2016, We reviewed and compared a supplementary requests of domestic fifteen medical institution radioactive self-disposal Plan & Procedure manual. In connection with this, we derive the details of the radioactive waste document based on the relative regulation of nuclear safety Act. The representative supplementary requests of Korea Institute of Nuclear Safety are disposal method of non-flammability radioactive waste, storage method of scheduled self-disposal waste, the legitimacy of self-disposal and pre-treatment of self-disposal, reference radioactivity of disused filter and output of storage period, attachment the evidential matter of measurement efficiency when using a gamma counter. Through establishing a medical radioactive waste guideline, we can clearly suggest a classification standard of radioactive nuclide and the type of occurrence. As a result, we can confirm the reduction of examination processing period while preparing a self-disposal document and there is no spending expenses for business agency. Also, the storage efficiency of facility will better and reduce the economic expenses. On the basis of this guideline, we will expect a contribution to the improvement of work efficiency for officials who has a working-level difficulty of radioactive waste self-disposal.

• Weed & Turfgrass Science
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• v.2 no.4
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• pp.341-347
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• 2013

The survey of weed occurrence was conducted to identify problematic weed species on the paddy field. Total 524 sites of the 17 regions in Chungnam Province in Korea were investigated from June to August, 2013. In the whole region, 23 weed species were identified including 19 annuals and 4 perennials. The most dominant weed species in Chungnam paddy fields were Echinochloa crus-galli (25.3%), followed by Monochoria vaginalis (11.9%), Eleocharis kuroguwai (10.3%), Bidens tripartite (9.3%) and Aneilema japonicum (8.5%). The 95.2% of the investigation sites was determined under dominance value 1 (range of cover <10: numerous individuals) by Braun-Branquet indicating proper weed control in the paddy fields. This information could be useful for estimation of future weed occurrence, weed population dynamics and establishment of weed control methods in Chungnam Province in Korea.