응급의학과 의사가 시행한 상복부 초음파의 정확성

하영록,김훈,유승,정성필,김승환,유인술 대한응급의학회 2002 대한응급의학회지 Vol.13 No.4

Purpose: The purpose of this study is to determine for upper abdominal pain, the accuracy of emergency abdominal ultrasonography (EAU) performed by emergency physicians with limited training. Methods: Two PGY-3 emergency physicians, who had received 2 hours of hands-on training, including the normal anatomy of a biliary system, liver, kindney, spleen, and pancreas, and who had studied the pathologic findings for another month were the subjects of this study. They used a Sonosite 180? to perform EAU on patients with upper abdominal pain within 2 months after training. We determined the agreement between the radiologist’s abdominal ultrasonography(RAU) and EAU by using Kappa statistics. Results: A total of 59 patients were enrolled. The agreement between the EAU and the RAU findings was 0.97, 0.88, 0.79, 0.73, 0.62, and 0.57 for gall bladder (GB) distension, cholelithiasis, GB wall thickening, duct dilatation, choledocholithiasis, and pericholecystic fluid, respectively (p<0.05). Conclusion: The results of EAU, performed by emergency physician with limited training on patients suffering from upper abdominal pain had a significant agreement with the RAU. However, more educations and cautions are warranted for diagnosing pericholecystic fluid and choledocholithiasis.

급성 심근경색증에 동반된 승모판 폐쇄부전증의 임상적 특징

정상만,조영일,조화상,유광하,송기호,인행환 건국대학교 의과학연구소 1997 건국의과학학술지 Vol.- No.7

인체 혈장에서 염산시프로플록사신(시프로플록사신으로서 250㎎) 정량을 위한 HPLC 분석법의 유효성검토

하용화,조성희,천성국,서성훈,류재환,최영욱,이경태 한국약제학회 2004 Journal of Pharmaceutical Investigation Vol.34 No.4

A simple HPLC method with ultraviolet detection of ciprofloxacin in human plasma was developed and validated. After protein precipitation with trichloroacetic acid, chromatographic separation of ciprofloxacin in plasma was achieved at 50℃ with a C_18 column and methanol-phosphate mixture (pH 2.5), as mobile phase. Quantitative determination was performed by ultraviolet detection at 278 nm. The method was specific and validated with a limit of quantification of 100 ng/ml. The infra- and inter-day coefficients of variation were between 1.67% and 10.55% and accuracy between 92.01% and 106.09%. The method has been successfully applied in a bioavailability study of 250 ㎎ ciprofloxacin hydrochloride tablet.

두경부 악성종양 절제술 후 유리피판을 이용한 재건술 40예의 고찰

백정환,손영익,김성민,추광철,하범준,심영목 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.7

부신적출 토끼신의 Li^(+)처리에 미치는 코티존의 영향

하혜경,장환일,성호경,한홍우 경희대학교 1989 慶熙醫學 Vol.5 No.3

분말사출성형을 통해 제조된 17-4 PH STS의 인장특성에 미치는 초기 충진율과 열린 기공의 영향

하태권,성환진 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

Powder injection molding (PIM) makes use of the shaping advantage of injection molding and is applicable to metals and ceramics. PIM delivers structural materials in a shaping technology, previously restricted to polymers. In this study, the 17-4 PH stainless steel powders with average diameters of 6-14 μm were injection-molded into flat tensile specimens. Sintering of the compacts was carried out at the various temperatures ranging from 1350oC for Ih. In the case of the compacts made with 10-μm powder, sintering temperature was taken from 200-1350oC to investigate the effect of relative density on the tensile properties.

우리 나라 보건관리대행서비스 평가 연구

하은희,조수헌,김선민,주영수,한상환,하미나,권호장,홍윤철,김창엽 大韓産業醫學會 1998 대한직업환경의학회지 Vol.10 No.1

Group occupational health service programme started in 1990 is one of the measures to cope with limited human and financial resources in occupational health. The programme has expanded rapidly to include 52 institutions, private as well as public, all over the country. In spite of its potential impact on health of employees and practice of occupational health in small and medium sized industries, comprehensive evaluation in terms of quality has not been tried. This study has aims to develop the criteria to assess the quality of newly developed group occupational health service programme, and to investigate the quality of institutions, and finally to develop policies for the quality improvement. 1) Criteria development : By defining occupational health services, in particular for small and medium sized industries, as one of the primary health care, followings are included as core elements of qualitative occupational health programme; accessibility, continuity, comprehensiveness, technical quality, intersectoral collaboration, emphasis on preventive services, community participation, and adequacy. Again each element is divided into five major components of national health system infrastructure developed by the World Health Organization; development of health resources, organized arrangement of resources, delivery of health care, economic support, and management. In turn, each component is categorized into three aspects of quality assessment, structure, process and outcome. Expert panel selected several criteria for each category to evaluate the programme. Criteria were modified according to each group of interviewees, to produce two sets of questionnaire, one for chief operating officer and another for nurses in the institutions, and the chief operating officer and workers in the workplace. 2) Subject : Of all 52 institutions, 25 voluntarily participated in the survey. At individual institution, chief operating officer and practicing nurses were interviewed in depth. After intensive education for interviewees, every interviewees, every interview was performed with standardized guideline and questionnaire. The quality of the 'Group occupational health service programme' was found to be lower than expected. Especially in continuity, comprehensiveness, technical quality, community participation and adequacy, lower quality in structural aspect was commonly identified throughout all the institutions,. Quality in terms of accessibility and continuity highly varied among institutions., To improve quality of the programme, more comprehensive and systematic programme such as accreditation has to be introduced. In addition, human resources, governmental fund and information systems for individual workers are to be developed. As a long range plan, integration of occupational health services into the national health systems and pooling of financial resources and planned allocation should be considered.

Fault Detection System for Front–wheel Steering Passenger Cars

Hwan?Seong KIM,Sam?Sang YOU,Jin?Ho KIM,Ju?Sik HA 제어로봇시스템학회 2001 제어로봇시스템학회 국제학술대회 논문집 Vol.2001 No.10

유전자 재조합 사람 IFN-beta인 제네베타와 베네세린의 생물학적 활성의 비교

하종천,이협준,박봉환,김진숙,유대근,남상윤 전주대학교 자연과학종합연구소 2003 전주대학교 자연과학연구소 학술논문집 Vol.15 No.1

Background: Recombinant IFN-beta products have been approved for the treatment of several diseases. Recently, Inbionet, Co. has successfully developed rhIFN-beta product, Genebeta. This study was performed in a purpose of confirming the biological activity of Genebeta by comparison with another recombinant IFN-beta, Beneserin which was already approved. Methods: In vitro antiporliferative activity, regulation of MHC class I expression, antiviral activity, regulation of natural killer cell cytotoxicity were studied for functional comparison of these two rhIFN-beta products. Results: Proliferation assay data showed that two recombinant IFN-beta inhibited T cell and Daudi cell proliferation to a similar extent. When antiviral activity was compared, there was no significant difference between them. The treatment of these two rhIFN-beta also resulted in a similar level of upregulation of class I expression on the surface of A549 cells. Cytotoxicity experiment against tumor cells revealed that both of rhIFN-beta could enhance NK cell cytotoxicity to comparable level. Conclusion: All comparison data indicated that rhIFN-beta products, Genebeta and Beneserin have comparable potentials as a biological response modifier.

土壤硬度測定器具 開發에 關한 硏究

金容煥,河浩成,李昇揆,金成泰,羅又禎,閔泳鳳 慶尙大學校 1980 論文集 Vol.19 No.1

An instrument for measuring cone penetration using the strain gage system was devised. The soil hardness of given soils under different conditions can be measured and compared by using this instrument. The soil hardness is a very useful index for making decisions in various aspects of the field and laboratory use; the workability of the agricultural machinery on the given field, and the uniformity of soil hardness of the stuffed soil in the soil bin which is tilled repeatedly. The performance of this newly devised cone penetrometer was compared with the conventional one through the field test. The summarized results are as follows; 1. In case of KM-1 type cone penetrometer, the newly devised one, the relation between the cone index and the strain indicated are as follows, Ci=0.026642ε₁-0.4173 when base area is 3.23㎠ Ci=0.013342ε₂ when base area is 6.45㎠ 2. The KM-1 type cone penetrometer is more convenient than conventional one in view of its accuracy and its adaptability of the self recording system. 3. Cone index increases gradually as penetrating depth into the soil is increased. Its maximum value appeared at the depth of about 20cm and then the cone index decreases until the cone reaches the depth of 40cm. It is assumed that such increase of cone index is caused by the existence of plow pan in paddy fields. 4. When cone penetrometers are manually penetrated into the soil deeper than 20cm from ground surface, its found to be difficult to carry out measuring operations due to high soil resistance to penetration. So, in order to use cone penetrometers below the depth more than 20cm, some equipment is necessary to maintain uniform penetrating speed of the cone. 5. Under the same soil conditions, the relation between Cik and Cic, cone indexes derived KM-1 type from conventional cone penetrometers respectively, was as follow;??