크론병에 대한 CoPPLX의 방어효과에 대한 연구

이호학,김유림,문창기,이재일,양병윤,김종수,이정민,정재혁,안석진,박상준,김윤권,김소연,김영중,조민구,최영자,장성조 圓光大學校 醫科學硏究所 2005 圓光醫科學 Vol.20 No.1

정신분열병 환자에서 얼굴 영상의 작동기억 장애 : 기능자기공명영상연구

이창욱,김태석,주라형,박주미,박여진,김종진,전신수,배치운,김정진,이수정,이철,백인호 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.2

Objectives : Impaired processing of facial information is one of the broad ranges of cognitive deficits seen in patients with Schi-zophrenia. We aimed to elucidate the differences in brain activities involved in the process of facial working memory between schizophrenic patients and healthy comparison subjects. Methods : Twelve patients with schizophrenia were recruited along with twelve demographically matched healthy volunteers as a comparison group. Functional magnetic resonance imaging (fMRI) was used to assess cortical activities during the Perfor-mance of a 2-back working memory paradigm using images of neutral faces as mnemonic content. Rcsults : The patient group performed the tasks with reduced accuracy. Group analysis revealed that the left fusiform gyrus, the right superior frontal gyrus, the bilateral middle frontal gyri/insula, the left middle temporal gyrus, the precuneus, the quadrangular lobules and the vermis of cerebellum showed decreased cortical activities in the patient group. On the other hand, an increased level of activation in the lateral prefrontal cortex and the pahetal lobule was observed from the patient group, all in the right hemisphere. Conulusion : A decreased level of activity in the left fusiform gyrus among the patient group implicates inefficient processing of facial information. An increased level of activation in prefrontal and parietal neural networks from the patient group confirms earlier findings on the impaired working memory of patients with schizophrenia.

골분을 이용한 구리 흡착 첨착

김은정,박정훈,김정섭,유현철,이봉섭,곽명화,우성훈,박승조 東亞大學校 環境問題硏究所 2005 硏究報告 Vol.27 No.1

Spent pig bone was consist of hydroxyapatite. And then we thought that it have a possibility as a adsorbent. The preparation of bone char prepared from spent pig bone in this study. We study on the recycling possibility as a adsorbent is able to adsorb copper ion from their single aqueous solutions. The results are summarized as follows. Bone char that prepared from spent pig bone at 105, 400, 700℃. The adsorption removal efficiency of copper ion onto bone char as adsorbent was above 90% for 15 hours. Increase in the initial pH of the copper ion solution result in an increase in the copper ion uptake per unit weight of the adsorbent. Freundlich isotherm model was found to be applicable for the experiment data of copper ion. The results showed that spent pig bone can be used for the absorption of the copper ion.

동종 조혈모세포이식 후 발생한 치명적 홍역 폐렴 1예

백창렬,이동건,최정현,정현화,조유경,박훈준,이승훈,박윤희,이교영,민우성,김춘추,신완식 대한감염학회 2001 감염 Vol.33 No.4

As a result of the enlarging pool of unvaccinated children and young adults, there has been an increase in measles in our countries. In these situation, it has been reported that measles associated pneumoinia is easily complicated with fatal respiratory failure, espycially in immunocompromised patients. Herein we report the case of lethal measles pneumonia after allogenic hematopoietic stem cell transplantation in adults proven by autopsy. Recently, one case of measles was encountered in 39-year-old female patients after allogenic bone marrow transplanted case (chronic myelogenous leukemia), who progressed into interstitial pneumonia pattern, despite treatment including antibiotics, immunoglobulin. The patient died of giant cell pneumonia compatible with that of measles which was comfirmed in the section of necropsy lung specimen. (Korean J Infect Dis 33:301∼309, 2001)

농산물중의 잔류농약 실태에 관한 연구(Ⅰ) : 고체상 추출에 의한 농산물중 잔류농약 분석에 관한 연구 Analysis of Residual Pesticides in Agricultural Products by Solid-Phase Extraction

허옥순,이재관,이정성,서정혁,주인선,허수정,김세은,김정근,신영희,유미자,김지연,심규창,김성환 식품의약품안전청 1998 식품의약품안전청 연보 Vol.2 No.-

신속 · 정밀하고 효율적인 짠류농약 검출을 위하여 극싱칼럼 (Extrelut-3')을 사옹한 SPE법을 시도하였다. 시료는 채소류체 사용하는 농약중 잔류성이 있고 식품공전상 시험 전처리가 각각 다른 Chlorothalonil등 6종의 농약을 선정하고 그들 표준액에 대한 PPIR수준의 농도로추출용라의 종류 및 용매량 등의 추출조건을 달리하여 회수율 등을 측정한 결과 최적의 분석조건을 얻었다. 1) 추출 용매량은 증가할수록 추출 수율이 높았고,용매 종류에 대한 추출수율은 각 농약별로 다소 차이는 있었으나 극성 정도가 비교적 높은 Ethyl acetate애서 평균 추출수율이 가장 높았다 2) 최대 평균회수율은 Ethyl acetate 60mL를 사웅할 경우로서 93.6%였다. 3)표준액을 시료에 첨가한 시험에서도 역시 Ethyl ace늘to가 푼출수율이 가장 높았으며 불순물 분리제거 효과도 LLE법 보다 월등히 우수하였다. 4) 각 농약별 검출한계는 치소 0.001ppin으로 농산물 중 미량 잔류하는 농약을 검출할 수 있을 것으로 사료된파. 그러므로 SPE법은 LLE법보다 경제적인 방법으로 판명되었으며, 앞으로 농산물 중 잔류농약 분석에서 LEE법을 대치할 쑤 있을 것으로 기대된다. Solid-phase extraction by polar column(Extrelut-3') was attempted to develope the fast and efficient method of detecting pesticide of farm product.5·ix kinds of pesticide used in farming fieldfrequently and different in pretreatment, were chosen from Korea Food Cord. Optfmal analysis condi-tions were determiBed from t31e recovery rate of standard pesticides according to extraction solvent andextraction volurae. Extraction yietd was increased as solvent polarity and extraction volume. Maximumrecovery rate was acquired at 93.6% when 60mL of ethyl acetate was used as eluent. Tllis method wasmore effective than liquid-liquid partition extract·ion method to eliminated the impurity and had 0.001ppm of detection limit. Therefore. solid-phase eEl=raction was expected to be economical substitute fortraditional liquid-liquid extT·action method.

Predicting postoperative total calcium requirements after parathyroidectomy in secondary hyperparathyroidism

( Byung Heon Kang ),( Soon Young Hwang ),( Jeong Yeop Kim ),( Yu Ah Hong ),( Mi Yeon Jung ),( Eun Ah Lee ),( Ji Eun Lee3 ),( Jae Bok Lee ),( Gang Jee Ko ),( Heui Jung Pyo ),( Young Joo Kwon ) 대한내과학회 2015 The Korean Journal of Internal Medicine Vol.30 No.6

Background/Aims: To prevent hypocalcemia after parathyroidectomy (PTX), parenteral calcium is required in addition to oral calcitriol and calcium. After switching to oral calcium, patients can be discharged from the hospital. The aim of this study was to analyze the clinical characteristics and outcomes of PTX performed at a single Korean center and to investigate the associated laboratory factors used to analyze the total amount of postoperative calcium required. Methods: We enrolled 91 hemodialysis patients undergoing PTX from November 2003 to December 2011. We collected clinical and laboratory data preoperatively, 12 and 48 hours postoperatively, at discharge, and 3 and 6 months postoperatively. Results: In total, 59 patients underwent PTX with autotransplantation (AT), 6 underwent total PTX without AT, 11 underwent subtotal PTX, and 15 underwent limited PTX. Total PTX without AT showed the lowest recurrence rate. At all postoperative time points, the mean levels of serum calcium, phosphorus, and intact parathyroid hormone (iPTH) decreased significantly, compared with preoperative levels; however, alkaline phosphatase (ALP) increased significantly from 48 hours postoperatively to discharge (p < 0.001). On multiple linear regression analysis, the total amount of injected calcium during hospitalization showed a significant correlation with preoperative ALP (p < 0.001), preoperative iPTH (p = 0.037), and Δphosphorus at 48 hours (p < 0.001). We developed an equation for estimating the total calcium requirement after PTX. Conclusions: Preoperative ALP, preoperative iPTH, and Δphosphorus at 48 hours may be significant factors in estimating the postoperative calcium requirement. The formula for postoperative calcium requirement after PTX may help to predict the duration of postoperative hospitalization.

나노크기 은촉매를 이용한 에틸렌 산화반응

이상량,정유성,신재순,김영철,박남국 한국공업화학회 2002 응용화학 Vol.6 No.2

Partial oxidation of ethylene to ethylene oxide was studied using silver caralystsiadeposited on a low surface area support, such as d-alum(< 1 m^2/g). Theselectivity to ethylene oxide has been reported to be related to the surface area ofactive silver species. Thus the activity of silver catalysts was studied in view of theparticle size of Ag.The catalyst prepared by water-alcihol method showed higheractivity. The addition of Cs as a promoter at higher temperature was observed toincrease catalytic activity of silver catalysts, presumably by increasing the surfaceares of active silver.

심전도에서 조기재분극을 보인 특발성 심실세동

이정은,함효주,이관용,노지웅,유진석,정우백 이화여자대학교 의과학연구소 2014 EMJ (Ewha medical journal) Vol.37 No.2

Early repolarization is a common electrocardiographic (ECG) feature found in young adults, men and athletes, and has been considered to be a benign feature for the last several decades. But recent studies suggest that early repolarization may be related to idiopathic ventricular fibrillation and sudden cardiac death. We report a young man, 35 years old, who had life threatening ventricular fibrillation and sudden cardiac arrest. He was evaluated for cardiac causes of ventricular fibrillation. There was no explanation other than that his ECG showed an early repolarization pattern so we treated him with implantable cardioverter defibrillator. Thus, we suggest that early repolarization may be related with life threatening ventricular arrhythmia.

부산광역시 일부하천의 계절적·년도별 수질특성 비교분석

정유진,문종익,성낙창,김부길,이영형 동아대학교 환경문제연구소 1999 硏究報告 Vol.22 No.1

This study is carried out to investigate the water quality change trends in Pusan Metropolitan streams. The temperature of the streams are moderate except in winter period and this can be explained by the Korean meterological characteristics. The pH does not vary by the time but some points are a little low. BOD_(5) and COD_(Mn), the index of water contaminants, be shown as characteristic domestic waste water patterns. The nutrient matters, such as total nitrogen and total phosphate, are appeared to be low. The chronic water quality, as BOD_(5) and COD_(Mn), shows that the loading rates in 1998 are smaller than the past(1983, 1992). Some points show a little high loading in autumn, but this needs more investigation to make clear the cause(s).

Acylthiocholine의 합성

정두희,이지현,박유미,정대일,곽문정,신영주 東亞大學校附設基礎科學硏究所 1998 基礎科學硏究論文集 Vol.15 No.2

Choline esters that are used with substrate of EE-AChE-catalyzed hydrolyses were synthesized by two methods. 2-Chloroethyl thiohexanoate 4a, 2-chloroethyl thioheptanoate 4c, and 2-chloroethyl thiooctanoate 4b were synthesized by treatment of hexanoyl chloride 3a, heptanoyl chloride 3c, and octanoyl chloride 3b with ethylene sulfide 2. Hexanoylthiocholine 6a and octanoylthiocholine 6b were synthesized by using 4a and 4b with trimethylamine 5. Secondly after reaction ethylene sulfide 2 with dimethyl amine 7 and acylation by acid anhydride 8, heptanoylthiocholine 6c, decanoylthiocholine 6d were synthesized by treatment of methyl iodide.