재생굵은골재를 사용한 콘크리트의 동결융해 특성

성찬용,윤준노,김영익,임상혁,정덕현 충남대학교 농업과학연구소 2003 농업과학연구 Vol.30 No.2

이 연구는 플라이 애시를 결합재 중량의 20%, 재생굵은골재를 천연쇄석굵은 골재의 0%, 25%, 50%, 75%, 100%를 치환하여 압축강도와 동결융해 특성을 구명하였으며, 이 연구를 통해 얻어진 결과를 요약하면 다음과 같다. 1. 재령 28일의 압축강도는 모든 배합비와 W/B 35%에서 400㎏f/㎠이상으로 나타나 고강도콘크리트에 이용될 수 있을 것으로 생각된다. 2. 중량감소율은 동결융해 300사이클에서 1%미만으로 나타났고, 표면박리와 같은 현상은 나타나지 않았으며, 재생골재의 대체율이 증가할수록 감소율은 증가하였다. 3. 초음파진동속도는 동결융해 300사이클에서 19~24%정도의 감소율을 나타내었으며, 재생골재의 대체율이 증가할수록 감소율은 증가하는 경향을 나타내었다. 4. 상대동탄성계슈는 재생골재의 대체율에 따라 60~72%의 범위로 나타내었으며, 재생골재 대체율이 증가할수록 감소하는 경향을 나타내었다. 5. 내구성지수는 모든 배합에서 60이상을 나타내었으나, 재생골재 대체율이 100%일때는 급격히 떨어지는 경향을 나타내었다. 6. 재생굵은골재를 사용한 콘크리트의 압축강도, 중량감소율, 초음파진동속도, 상대동탄성계수, 내구성지수 시험결과를 볼 때, 시험에 사용한 재생굵은 골재는 고강도콘크리트에 사용이 가능할 것으로 판단된다. This study was performed to examine the freezing and thawing properties of the high strength concrete using recycled coarse aggregate. The recycled coarse aggregate was replaced by 0%, 25%, 50%, 75% and 100% of natural crushed aggregate. The compressive strength of the concrete used recycled coarse aggregate was shown in more than 400kgf/㎤ at the curing age 28 days. The weight loss ratio by freezing and thawing was shown in less than 1% at all mix type. The pulse velocity and relative dynamic modulus were decreased with increasing the freezing and thawing cycles. Also, durability factor for the freezing and thawing were decreased with increasing the content of recycled coarse aggregate. But, recycled concrete replaced with recycled coarse aggregate 100% was shown in more than 60 by durability factor in freezing and thawing of 300cycles Accordingly, these recycled coarse aggregate can be used for high strength concrete.

전국 응급의학과 수련병원의 응급실 병력지에 대한 분석

임태호,임훈,이종호,강형구,장문준,조광현,장석준,김승호,정상원 대한응급의학회 2000 대한응급의학회지 Vol.11 No.4

Background: This study was designed to analyze the current emergency department(ED) medical records of teaching hospitals in Korea. Methods: The five-item questionnaires were mailed to the EDs of 40 hospitals. Among them, 27 questionnaires and 35 ED medical records were returned for reply rates of 67.5% and 87.5%, respectively. Results: 1) The actual number of data elements in the ED medical records used by each hospital varies widely. It ranges from 1 to 15 data elements with an average of 7.5 data elements. 2) Thirteen data elements, signature of nurse, checklist style in review of systems, checklist style in physical examination, neurologic examination, figure of face, Glasgow coma scale, trauma scale, treatment plan, mode of transfer, condition on transfer, documents sent with patient, condition on discharge or discharge instruction, use of pediatric chart and vaccination history are used by less than 50% of the medical records examined. 3) There was no difference in the total number of data elements or in redesign and computerization of ED medical record based on the location of the hospital, the type of hospital administration, or the number of years since the start of EM residency program. 4) There was a statistically increased number of data elements in redesigned medical records. 5) In the survey, 89% of the residents replied that medical records needed to be redesigned. With respect to uniformity, 58% of the residents disagreed. A well-designed checklist chart rather than a descriptive chart was preferred by 89% of the residents. Conclusion: The currently used ED medical records have much room for improvement. The age of the ED had little impact on the quality of ED medical records. More attention and effort in this field are needed. In addition, The Korean Society of Emergency Medicine should provide guidelines for ED medical records.

Rocuronium 애벌투여시 근이완 발현시간 정도의 관찰

엄효상;김현식;최영균 인제대학교 2011 仁濟醫學 Vol.32 No.-

Methods: A total of 100 patients with ASA physical status I-II scheduled for elective surgery were enrolled. After induction with propofol (1.5mg/kg), one hundred patients were randomly allocated to two groups (Group A: T1 height depression (T1%)≥90%, Group B:T1 height depression (T1%) < 90%). Three minutes after priming with rocuronium (0.06 mg/kg), Group A received 0.54 mg/kg rocuronium, Group B received sensitivity-adjusted dose of rocuronium, respectively. Intubation was performed when T1 height depression (T1%) = 0% (onset time). Neuromuscular function was assessed using Evoked Eletromyography (Datex Relaxo graph NMT. Datex. Helsinki. Finland). Results: Three minutes after priming (0.06 mg/kg), T1 height depression (T1%) in Group B (71.0 ± 8.8%) were significantly lower than Group A (98.4 ± 2.4%) (P < 0.05). The onset times in Group B (195 ± 29s) were significantly shorter (P < 0.05) than Group A (248 ± 34 s). Conclusions: Sensitivity-adjusted dose of rocuronium by priming decreased the onset times and total rocuronium dose.

붕어(Carassius auratus)에 있어서 benzocaine, clove oil 및 tricaine methanesulfonate(MS-222)의 마취에 따른 혈장 cortisol 농도의 변화

임현정, 정태성, 조성준, 허강준 충북대학교 동물의학연구소 2007 Journal of Biomedical and Translational Research Vol.8 No.1

본문참고

유방암과 섬유선종의 방사선학적 소견 : 유방 단순촬영술과 유방 초음파검사 소견의 비교 연구 Studies on mammographic and ultrasonographic findings evaluation

임한혁,최득린,고은석,이혜경,임철완,이상진,홍현숙,최교창,김영화,박재성 순천향의학연구소 1997 Journal of Soonchunhyang Medical Science Vol.3 No.2

Purpose : To evaluate the utility of mammography and ultrasonography in study of morphologic differential diagnosis between malignant and benign mass. Materials and Methods : Average age of patients with breast cancer was 48.4 year-old, and that of fibroadenoma was 29.4 year-old. The equipments used for examination were MF-159 high frequency mammography(Bennet Co.) and Acoustic image 5200S. We evaluated mammographic findings about breast parenchymal pattern, calcification, margin and size of the mass associated tumor nature, and ultrasonographic findings about shape, height and width, internal homogenicity and echo pattern, wall contour, boundary echo, and posterior shadow in breast mass. Thirty-seven of mammographic findings and 34 cases of ultrasonogreaphic findings in pathologically proven breast cancer and 34 case of mammographic findings and 71 cases of ultrasonographic findings in breast fibroadenoma were reviewed retrospectively. Results : In mammographic study, the parenchymal patterns of breast cancer according to Wolfe classification were NI(16.2%), PI(24.3%), P@(37.8%), and DY(21.6%) and those in fibroadenoma were NI(3.1%), Pl(11.7%), P2(35.2%),and DY(50%). Mammographic findings about presence of calcification were as follows; only calcification(16.2%), only mass(51.3%), and mass with calcification(32.5%) in breast cancer, and only mass(91.2%), mass with calcification(8.8%) in fibroadenoma. The features of mass margins were classified as ill-defined margin(45.9%), well-defined(5.4%), and well-defined with partial spiculation(48.6%) in breast cancer and ill-defined(20.5%), well-defined(73.5%), and well-defined with partial spiculation(5.8%) in fibroadenoma. The mass were grouped by size; 1-2cm(37.8%), 2-4cm(45.9%), and 4-6cm(16.3%) in breast cancer and 1-2cm(79.4%), 2-4cm(17.6%), and 4-6cm (3.0%) in fibroadenoma. On ultrasonographic study, the shape of masses in breast cancer were lobulated(82.3%),oval(14.7%), and round(3.0%),and those in fibroadenoma were lobulated(14.0%), oval(57.7%), and round(18.3%). The cases that the height was longer than width were 32.3% in breast cancer and 0% in fibroadenoma. The findings about homogenecity and echo patterns were as follows; hypoechoic(52.9%) and mixed(47.1%) in breast cancer and hypoechoic(2.8%), hypoechoic(63.4%), and mixed(33.8%) in fibroadenoma. The margin of masses were smooth in 85.9% of fibroadenoma, and irregular in 73.6% of breast cancer. The boundary echoes of masses and decreased posterior echo shadow were seen only in 61.8% and 55.9% of breast cancer, respectively. Conclusion: The margin and calcifications are more clearly delineated on mammography but breast cancer and fibroadenoma, both are more commonly developed in dense parenchymal pattern(P2+DY),and there findings are easily obscured in mammography. So ultrasoography is very useful in these masses evaluation, especially amoung young patients.

상부소환관협착에 대한 Savary-Gilliard Dilatation의 치료효과와 안전성에 관한 관찰

정현용,육은주,임의혁,김병호,성자원,이기천,허승식,이헌영,김영건 충남대학교 의과대학 지역사회의학연구소 1992 충남의대잡지 Vol.19 No.2

For the patient with stenosis of upper digestive tract caused by either benign or malignant process, esophageal dilatation is an important therapeutic modality. We reviewed retrospectively 39 cases treated by Savary-Gilliard dilatation for upper digestive tract stenosis, and results were follows : (1) Dysphagia was improved in 95% of the patients. (2) Eight patients(20%) sufferd perforation, five of them were managed with conservative medical measures, others were managed operatively. (3) In the cases with benign stenosis dysphagia was not noticed for 8.8 months, but with malignant stenosis dysphagia was reappeared after 2.8 months despite concomitant chemoradiotherapy. In conclusion, Savary-Gilliard dilatation was an effective measure for symptome due to upper digestive tract stenosis, but more careful attention for perforation should be necessitated. Also another therapeutic modality for treatment of malignant stenosis was inevitable.

레거시 시스템 이해 도구를 위한 효율적인 코볼 코드 분석기 설계 및 구현

주상현,임동기,정민수 慶南大學校 附設 工業技術硏究所 2003 硏究論文集 Vol.21 No.2

최근 컴퓨팅 환경이 변화함에 따라 현재 운용되고 있는 레거시 시스템을 새로운 환경에서도 운용할 수 있도록 시스템을 현대화하는 연구가 활발히 진행되고 있다. 특히 소프트웨어 재사용 기술과 함께 컴포넌트 기술이 개발, 보급됨에 따라 기존 시스템을 컴포넌트로 변환하거나 연계하는 방법들이 연구되고 있다. 그러나, 레거시 시스템은 중요성과 안정성으로 인해서 쉽게 새로운 시스템으로 전환하기가 쉽지가 않다. 그래서, 레거시 시스템의 현대화를 위해서 재개발, 변환, 래핑 등의 다양한 방법을 사용해서 새로운 시스템 환경에서 사용 가능하게 한다. 이 방법을 사용함으로써 신뢰성과 안정성을 향상시킬 수 있게 된다. 본 논문에서 추출정보, 플로우 그래프, 프로그램 콜 그래프, 패러그래프 플로우 그래프 등에서 사용될 핵심변수와 패턴 식별을 위한 레거시 시스템과 릴레이션 방지 기술을 가진 효율적인 코볼 코드 분석기를 소개한다. Computing environment is changing much recently Legacy system should be executed in new environment. Modernization research of system is progressing so that can be executed in these environment. According to the development and supply of the component technology and software reuse technology. We are studied and interested in conversion and connection of component methods. But the importance of legacy system, it is hard to convert by easily new system. Make use of legacy system just as it is using methods of redevelopment, transformation, wrapping etc. It is available in new system environment and improve trustability and stability. In this paper, we introduce a legacy system and design a efficient cobol code analyzer which has a redundant relation preventing technology to create core variable and pattern discernment that is used to abstraction information and flow graph, program call graph, paragraph flowing graph etc.

관로 내의 염소농도 변화특성의 모의를 위한 수질모형의 개발과 비교

조임영,김상현,이현동 대한상하수도학회 2003 상하수도학회지 Vol.17 No.2

Considering the dynamic conditions in the pipe network, the inverse chlorine models have been integrated to the hydraulic transient model on the platform of the method of characteristics. EPANET2 is compared with the developed models to express the advantages of the unsteady model to the steady state approach. The developed models show realistic prediction of chlorine concentration with the impact of friction loss. However, the stability of numerical scheme need further research to overcome the numerical errors in the rapidly varied flow condition.

실험적 진폐증에서 투여약제에 따른 면역학적 병리학적 조직변화

윤임중,임현우,노영만,오상용,정장영,임영,김경아 가톨릭 대학 산업의학 쎈타 산업의학연구소 1993 韓國의 産業醫學 Vol.32 No.2

To access the effects of some drugs such as piperazine phosphare, azathioprine and allopurinol in the experimental pneumoconiosis, 263 rats weighted 240-320 gm was divided into the control and eight experimental groups. To each group, the turbid solution mixed free silica, talc and natural coal dust of 50 mg in 0.8 ml saline were instilled intratracheally. At the begining and 5th week of experiment, piperazine phosphate(8mg/week orally), aspirin(1.5mg/day intramuscularly), azathioprine(25mg/day orally) and allopurinol(1.5mg/day orally) were administered simultaneously, while the dust turbid solution was only given to the control group. For each group the change of body weight. dry right lung weight, cellularity including total cell, macrophage, lymphocyte and neurtrophil in bronchoalveolar lavage fluid, superoxide ion, hydroxyproline, leukotriene B₄, tumor necrotsis factor, prostaglandin E₂were examined, and observed the pathological chages in lung tissue. The results were as follow : 1. The larger amount of their instilled dust and the longer observation period, the severer pathological findings were found in the lung tissue of each experimental group. 2. The body and dry right lung wight was not significantly changed in the experimental groups compared with the control group. 3. The number of total cell in bronchoalveolar lavage fluid was markedly less in the experimental group than the control one, while no significant difference was found in the percent alveolar macrophages and lymphocytes in both groups. However, the percent of neutrophiles was usually lower than in the control group. 4. The amount of superoxide ion was frequently less in the experimental group compared with the control one. 5. The amount of hydroxyproline was significantly lower in the experimental group than in the control one. 6. The amount of leukotriene B₄was usually less in the drug administered group than in the control one. 7. The amount of tumor necrotic factor was also frequently lower in each experimental group than in the control one. 8. The amount of prostaglandin E₂was usually higher in each experimental group than in the control one.

자궁선근증의 고찰

조환성,이해혁,정성윤,김성욱,이순곤,남계현,이임순,이권해 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1

Objective: This study was designed to estimate the frequency and risk factor for edenomyosis Methods: The clinical records of 623 women undergoing hysterectomy were retrieved in the Department of Obstetrics and Gynecology, Soonchunhyang University Hospital, during 5 years, from Jan. 1995 to Dec. 1999. Results: The following result were obtained. 1. Adenomyosis was found in 247 of 623 patients(39.6%) 2. The highest incidence was 40-49 years of age group, an incidence of 46.6% and mean age was 44.7 years. 3. Adenomyosis was more frequently observed in parous women than non-parous women, such as 93.1% and 6.9%, respectively. 4. Dysmenorrhea, metrorrhagia, pelvic pain and vaginal bleeding were common symptom of adenomyosis, an incidence of 28.7%, 19.0%, 18.2% and 16.2%, respectively. 5. Myoma was the most combined disease in adenomyosis, showing the incidence of 54.7%. 6. Grossly, the size of uterus was enlarged more than 10 weeks gestational size in adenomyosis, an incidence of 61.9%. 7. Preoperative diagnostic accuracy of adenomyosis was 6.9%. Conclusion: The results show that deeply understanding of the common symptoms and epidemiology of adenomyosis improve the preoperative diagnostic accuracy.