동일한 환자에서 조혈모세포이식 전후의 호중구감소 기간 중 감염양상에 대한 비교연구 : 중심정맥관 관련 패혈증을 중심으로 Based on Central Venous Catheter Related Septicemia

류재호,노규태,이영석,이영호,권혁찬,김재석,김효진,이영민,박혜원,박근희 대한조혈모세포이식학회 2002 대한조혈모세포이식학회지 Vol.7 No.1

연구배경: 동일한 환자를 대상으로 조혈모세포이식 전 일반 병실에서의 관해유도 항암제치료 및 강화요법으로 인한 호중구감소 기간의 감염양상과 고용량 항암제치료 후 무균실에서의 조혈모세포이식 시 호중구감소 기간의 감염양상을 중심정맥관 관련 패혈증을 중심으로 비교 연구함으로써 효율적인 감염관리지침을 마련하고자 하였다. 대상 및 방법: 1999년 1월부터 2001년 7월까지 2년 7개월간 동아대학교병원 일반병실에서 악성혈액질환으로 항암제 치료를 받다가 조혈모세포이식을 시행받았던 22명을 대상으로 중심정맥관 관련 패혈증의 형태를 비교분석하였다. 결과: 대상 환자들의 일반병실과 무균실에서의 입원기간은 각각 32±13일, 33±19일, 호중구 감소기간은 15±12일, 17±18일, 호중구 감소기간의 발열 횟수는 14회, 14회로서 입원병실의 종류에 따른 차이는 없었다. 환자들의 중심정맥관 사용일수는 일반병실에서 29일(7~545일), 무균실에서 100.5일(25~606일)이었으며, 총 사용일수는 각각 1,515일, 3,250일로서 무균실에서의 중심정맥관 사용일수가 의미 있게 길었다(P=0.001). 중심정맥관 사용 일수에 대한 감염률은 각각 5.28/1,000일, 3.08/1,000일로서 일반병실에서 그 빈도가 높았으나 통계적 유의성은 보이지 않았다(P=0.141). 결론: 중심정맥관 삽입 후 일반병실에서 항암제 치료를 받던 환자가 조혈모세포이식을 위하여 무균실에 입원하는 경우, 중심정맥관을 교체하는 것이 감염관리를 위하여 바람직할 것으로 생각된다. Background: We compared the incidence of central venous catheter (CVC) related septicemia during neutropenic period in the same patient, which developed following chemotherapy for remission induction and consolidation, or hematopoietic stem cell transplantation (HSCT). Methods: We retrospectively reviewed the medical records and laboratory data of 22 patients with hematologic malignancies who received anticancer chemotherapy followed by HSCT at Dong-A University Hospital between January, 1999 and July, 2001. We investigated the duration of hospitalization, duration of neutropenic period, duration of catheterization, microbiologically documented organisms and incidence of CVC related septicemia. Results: The data in general ward (before HSCT) and laminar air flow room (after HSCT) were as follows: duration of hospitalization was 32±13 days and 33±19 days, duration of neutropenic period was 15±12 days and 17±18 days, median duration of catheterization was 29 days (7~545 days) and 100.5 days (25~606 days) (P=0.001), and incidence of CVC related septicemia was 5.28/1000 days and 3.08/1000 days, respectively. In the CVC related septicemia, the most common etiologic organism was coagulase negative staphylococcus. Conclusion: We suggest that the exchange of CVC before admission to laminar air flow room could decrease the incidence of CVC related septicemia in HSCT recipients.

킬레이트막을 이용한 안티몬의 흡착특성

권영석,김민 한국공업화학회 2004 응용화학 Vol.8 No.2

Along with fast swelling of industrial facilities problem for heavy metals that increase day by day is risen by serious social problem now. Heavy metals of included vast quantity are accelerating damage of water area ecosystem because is flowed in more than self-cleansing power in rivers or lake in wastewater of this. According as discharge test for wastewater is solidified, interest about a technology that remove perfectly a little heavy metals of very small amount is increasing. Made ion exchange membrane and chelate forming group that use radiation graft polymerization method to remove Sb that is poisonous heavy metals among this. In this study, could know that wave and chelate forming group that compare adsorption special quality of Sb to use made ion exchange membrane and chelate forming group are effective to heavy metals removal.

Study on Aging Effect of Adhesion Strength Between Polyimide Film and Copper Layer

Seok‑Bon Koo,Chang‑Myeon Lee,Sang‑Jun Kwon,Jun‑Mi Jeon,Jin‑young Hur,Hong‑Kee Lee 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.1

This paper experimentally confirmed that the adhesion strength of the copper layer formed on the surface of the polyimidefilm by wet plating greatly changes with the aging time. The adhesion strength of the copper layer showed a rapid increasefrom 4 to 10 h after aging had begun and then converged to a value without a significant change. The adhesion enhancementbetween polyimide film and copper layer by aging is due to the interlocking effect caused by the volume expansion of copperoxide (CuO) formed in the polyimide, the increased mobility of copper particles enlarged by the decrease of impuritiesin the copper layer grain boundaries, and the consequent change of the crystal structure of the copper layer leading to theinternal stress reduction. Such adhesion improvement can be confirmed by the progress of the cohesive failure indicatingthe breakdown of the polyimide film.

法人稅平準化 測定에 관한 硏究

權義晩,韓永熙,鄭柔錫 군산대학교 산업개발연구소 1997 産業開發硏究 Vol.16 No.-

This paper investigates the problems in the measurement regarding corporate income tax smoothing. Past studies generalyy based conclusions on the degree or frequency of apparent tax smoothing behavior identified among sample firms. This investigated two problems in the past studies. The first problem is that much of what appears as tax smoothing may occur "naturally" i.e., without any conscious intent by management to regulate fluctuations in its exemption codes. The second problem lies in the measurement ration of tax smoothing, which may overestimate the fluctuations is corporate income tax. In sum, this study proposed a general methods which taked the possibilities naturally tax smoothing by management and provided the method exactly to measure the smoothness.

한국인 관상동맥의 변화양상에 대한 형태학적 연구

권태정,이상용,이한영,고영창,권기석,조재홍,김태공,김유훈,조갑래,서중석,이원태 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

전기 기계적 해리로부터 회복된 쯔쯔가무시병에서의 급성 전격성 심근염

정영학,이민주,이경화,이지훈,김석형,이병권 이화여자대학교 의과학연구소 2016 EMJ (Ewha medical journal) Vol.39 No.1

Scrub typhus, caused by Orientia tsutsugamushi , is an acute febrile illness. Characteristics of tsutsugamushi disease are fever, rash and eschar. However, severe complications might rarely occur, such as acute fulminant myocarditis caused by scrub typhus. Thus, there are few reports of recovery from seriously complicated cases. We report on an adult male with scrub typhus complicated with acute fulminant myocarditis with no previous comorbid illness who recovered successfully with proper treatment including antibiotics, ventilator support, percutaneous cardiopulmonary support, and continuous renal replacement therapy.

이동 로봇을 위한 초음파 센서 기반의 주면 환경 지도 작성에 관한 연구

권석근,서남일,노영식 울산대학교 2000 공학연구논문집 Vol.31 No.1

본 논문에서는 미지의 환경에서 작업하는 이동 로봇의 경로 계획과 위치 인식에 필요한 주변 환경에 대한 지도작성 방법에 대하여 다루었다. 주변환경에 대한 정보를 보다 간략하게 나타내기 위하여, 이동로봇의 실내주행 중에 초음파 센서로부터 얻어진 일반적인 격자지도를 호프 변환을 이용하여 몇개의 직선 선분으로 단순화시키는 방법을 제안하였다. 여기서 기본이 되는 실내 환경에 대한 격자 지도 표현은 이동 로봇 상부에 장착한 15개의 초음파 센서를 이용하여 실시간으로 얻었고, 생성된 격자 지도 정보를 Off-Line상에서 호프 변환을 사용하여 간단한 직선 선분으로 변환한 후, 직선 선분을 합성하여 주변 환경 정보 표현의 간략화를 구현하였다. 실제 실험한 결과, 이동 로봇의 주변 환경을 간략하게 표현할 수 있는, 적은 수의 직선 성분으로 구성된 지도를 얻을 수 있다. In this paper, we presents how to simply build a grid map, which forms with line segments through in indoor environment. The description of the grid map for indoor environment is acquired in real time from 15 Ultrasonic sensors on a upper frame of mobile robot. To transform the grid map intothe line segment map, the Hough transformation method is applied. In result, we could obtain the line segment map which will be able to describe a indoor environment with a small number of line segments.

원료콩의 증자조건을 달리한 검정콩 간장의 유리당, 유기산 및 지방산의 변화

권선화,최재훈,고영란,손미예,박석규 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2003 한국식품저장유통학회지 Vol.10 No.3

콩의 증자조건에 따른 검정콩 전통간장의 숙성 후 유리당, 유기산, 지방산조성을 조사하였다. pH 값은 5.04~5.32로 시험구간의 큰 차이를 나타내지 않았고, 원료 콩을 상압증자한 검정콩 간장이 가압이나 스팀보다는 약간 높은 수치를 나타내었다. 적정산도는 4.26~7.73mL로 나타났으며, 가압증자한 검정콩 간장(4.26~5.61mL)이 가장 높았으며, 다음으로 상압(7.32mL), 스팀(5.99~6.96mL)의 순으로 나타났다. 환원당은 25.18~194.81㎎%로 나타났고, 상압이 25.18㎎%로 가장 낮았으며, 가압이나 스팀증자한 검정콩 간장의 경우 상호간에는 큰 차이가 없지만, 상압한 것보다는 7~8배 높은 함량을 나타내었다. 주요 유리당은 glucose, fructose, xylose였으며, 스팀증자한 검정콩 간장이 상압이나 가압보다 각각의 유리당 모두가 많았고, 상압증자는 유리당이 극히 미량으로 검출되었다. 주요 유기산은 succinic acid, oxalicaicd, tartaric aic, malic acid, citric acid였고, 총 유기산은 스팀증자 (40.38~76.96 ㎎%)한 검정콩 간장이 상압(55.85㎎%)이나 가압(27.78~34.21)한 것보다 많았다. 증자 처리시간이 길수로 가압과 스팀으로 처리하여 제도된 검정콩 간장은 약간씩 감소되는 경향을 나타내었다. 주요 지방산은 palmitic acid(33.28~43.51%), stearic a창(14.15~19.16%), myristic acid(5.03~19.14%)였으며, 전체 지방산 중에 55.97~72.85% 비율을 차지하였고, 원료 콩에 존재하지 myristic acid가 상당히 많이 존재하였다. pH values in all samples were in the range of 5.04 to 5.32. pH of kanjang prepared with normal pressure(HPK) was higher than that of kanjang prepared with high pressure(HPK) and kanjang prepared with steam(SPK). Titratable acidity(TA) in all samples were found to be 4.26∼7.72 mL. TA in HPK(5.99∼6.96 mL) was lower than that in SPK(4.26∼5.61 mL) and NPK(7.32 mL). Reducing sugar(RS) contents in all samples were in the range of 25.48 to 194.81 ㎎%. Rs contents of HPK and SPK were a similar pattern and were higher than that of NPK. Major free sugars(FS) were glucose, fructose and xylose. In total FS, SPK was higher than that of NPK and HPK. Major organic acids(OA) were succinic acid, oxalic acid, tartaric acid, malic acid citric acid. OA contents in HPK and SPK were decreased slightly according to the heating time of whole black bean. The highest percentage of fatty acid(FA) in all samples was palmitic acid(33.28∼43.51% as area % of GC chromatogram), followed in a decreasing order by stearic acid(14.15∼19.16%) and myristic acid(5.93∼19.14%). The composition ratios of three FA to total FA ranged from 55.97 to 72.85%. In all samples, there was myristic acid that was not contained in raw soybean.

뇌동맥류 파열 환자에서 증후성 뇌혈관연축의 발생 및 회복에 영향을 미치는 인자들

최석민,석종식,권정택,민병국,황성남,김영백,홍현종 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.10

To determine the factors affecting development and recovery of symptomatic vasospasm. the author analysed the results of patients with ruptured intracranial aneurysms treated by nimodipine and prophylactic “triple0H” therapy. From January 1991 to December 1995. 199 patients underwent surgery for ruptured intracerebral aneurysms. Combined hypervolemic hemodilution was initiated at the time of admission. Induced hypertension was added immediately after surgery(aneurysmal neck clipping). All patients received nimodipine intravenously or orally until the 14th day of SAH Sixty patients underwent surgery on Day 0 through 2 after attacks of subarachnoid hemorrhage(Goup A) 105 patients on Day 3 through 14(Group B). and 35 patients after Day 14(Group C). Of 199 patients. 76(38%) patients suffered from symtomatic vasospasm. Symptomatic vasospasm occured in 34% of Group A patients. 33% of Group B patients. and 5% of Group C patients. Symtomatic vasospasm occured more frequently in the older age group. the Fisher group 3 and Hunt & Hess grades 3, 4 and 5 groups. Of 76 patients who suffered from symptomatic vasospasm. 47(62%) patients recovered completely. The author analysed the relationship between recovery rate and sex, age. Hunt & Hess agrde and Fisher group among these 76 patients. Recovery rates between these groups were not significantly different. Based on this experience the author believes that Hunt-Hess grade. Fisher group and age are important factors affecting symptomatic vasospasm development.

불안 증상을 동반한 신체화 환자의 인지적 특성

나영석,정한용,권영준,이소영,박준호 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.6

Objectives : Assuming that somatization closely interacts with anxiety symptoms, one might speculate that anxiety symptoms will produce the significant differences in development, course and treatment of somatization and the cause of these differences will be elucidated in the cognitive aspect. This study was performed to examine the cognitive characteristics in terms of the somatosensory amplification and the symptom interaction in patients with somatization accompanied by anxiety symptoms. Methods : The following measures were administered to subjects who had a T-score of >60 on somatization subscale of Symptom Checklist-90-Revision (SCL-90-R) : 1) Minnessota Multiphasic Personality Inventory-Korean Version (MMPI-K), 2) Somato-sensory Amplification Scale (SSAS), 3) Symptom Interpretation Questionnaire (SIQ). There was a comparison of differences in the somatosensory amplification and the symptom interpretation between the anxiety group and the non-anxiety group divided by T-score of >60 on the psychasthenia subscale of MMSE-K. Multiple regression analysis was performed to determine the effect of the differences in the somatosensory amplification and the symptom interpretation on age, sex, marital status and level of education between those two groups. Results : There was a greater amplification of sensation in the anxiety group than the non-anxiety group. The former showed a higher level of physical, psychological and catastrophic interpretation than non-anxiety group except with regard to environ-mental interpretation. Somatization was affected by somatosensory amplification and physical interpretation in both groups, as well as psychological interpretation in the anxiety group. Conelusion : Regarding the cognitive aspect, the somatosensory amplification and symptom interpretation were more severely distorted in patients accompanied by anxiety symptoms. These results suggest that a therapeutic approach based on the cognitive charactehstics is essential for the effective management of somatizer.