쌍곡선 모형에 의한 삼천포 항내 정온도 분석

함계운,박준일,장대정 경상대학교 생산기술연구소 2003 工學硏究院論文集 Vol.19 No.-

The calmness inside a harbor plays an important role in the appropriate disposition of harbor structures. However, it is not easy to get the accurate computational results because it is affected by many factors concerning with the wave transformation. Recently, numerical model tests which are more economic and rapid than hydraulic model experiments, are carried out for the purpose of analyzing wave height distribution in harbors. This paper presents the numerical model which is able to calculate wave height inside a harbor. It is based upon the time-dependent mild slope equation involving wave refraction, diffraction, shoaling effect and reflection. In particular, the arbitrary reflectivity is used at the boundary in order to simulate the real harbor reflection condition. The proposed numerical model is applied to Samcheon port in order to investigated harbor calmness.

캡슐화된 잠열 미립자 슬러리를 열 매체로 하는 축열식 냉방시스템

최준규,이재구,양현수,주태운,김필수 한국공업화학회 2003 응용화학 Vol.7 No.1

Microcapsules containing tetradecane as the phase change material (PCM) and ashell of meolamine-formalin resin were prepared by in situ polymerization. Tooptimize the encapsulation process, experiments were performed under various reaction conditions. Microcapsules with a high uniformity could be prepared, and the ratio of breakage of the microcapsules was less than 6% over 10,000 cycles using by a circulation pump. The cooling system, which has adopted MPCM slurry as a media for transporting cold thermal energy, is designed to investigate the performance of newly developed coolant. The discharging times of cold energy in circulating 20 wt% MPCM slurry are lasted to 260 minutes as long as the sensible cooling system. According, it was demonstrated that the microcapsules prepared in the current research are suitable for potential application as hat transporting media.

자동차차체 및 부품제조업 산업장의 작업환경실태에 관한 조사 연구

서준호,문덕환,김정호,이채관,황용식,손병철,김대환,이창희,김휘동,이채언 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5

Objectives: For the purpose of preparing the fundamental data and control the working environment and assessing the status of working environmental in manufacturing industry of bodies for motor car and of parts. Methods and Materials: Accessories for motor car and its engines the auther measured the noise level, concentration of dust, heavymetals, organic solvents, chemicals to 99 industries(24 working processes) form Feb. 2000 to Oec. 2000. Results: The results were as follows : 1. Mean noise level cutting, grinding, pressing, foundries and shot-blast was exceeded to threshold limit value(TLV) of noise. 2. Mean concentration of total dust was not exceeded to TLV. 3. Mean concentration of Mn in welding process and Pb in drying, welding, fabricating, rolling was exceeded to TLV. 4. Mean concentration for chemicals and organic solvents were not exceeded to TLV. 5. Mean concentration of dust and heavymetals were statistical significant difference between with local ventilation system and without local ventilation system. Conclusion: Above results, author suggest to prepare more passively control to working environment where exceeded the TLV.

경남지역 강우량의 분포특성

박준일,함계운,김경훈,장영태 경상대학교 생산기술연구소 2003 工學硏究院論文集 Vol.19 No.-

A rainfall distribution is very complicate owing to topographic influence in Korea. Hence, the variations in the distribution of monthly rainfall are required precise analysis in order to predict a flood control and to secure a sufficient capacity of water. In this study, time series of 32 rain gage stations over Gyeongnam area are examined for a 36-year secular period(1963-2000) and the extent and nature of changes, such as fluctuations, trend and persistence, are investigated. The trend analysis of regional rainfall practised a tendency towards annual rainfall and seasonal rainfall totals in all regions divided into two climatologically homogeneous regions by cluster analysis for annual rainfall series ; namely, Region Ⅰ(gyeongnam's inland area), Region Ⅱ(western mountain & southern coastal area), the periodicity is examined by the power spectrum analysis.

진주남강개발을 위한 고무댐(RUBBER dam)설치에 따른 수위변동 예측

박준일,김기홍,함계운 慶尙大學校生産技術硏究所 1994 生産技術硏究所論文集 Vol.10 No.-

The analysis of water level which is changed because of the construction of bridges, flood river reservation and structures etc is important factor, researching for flood plain in urbanland. In this study, the construction of flood river reservation as multiple-purpose space is planned and water level is predicted for designed discharge in the region. Also, for Nam-river Dam discharge at drier, the rating curves of water level-discharge in upstream-sections of rubber dam are prediced due to the discharge and the optimum height of rubber dam is determinated.

피부과적 시술 시 플라스틱 실린더를 이용한 지혈

김성준,이운하,이용석,전덕규 대한피부과학회 2003 大韓皮膚科學會誌 Vol.41 No.4

Dermatologists frequently perform a number of procedures without the aid of an assistant and have sometimes difficulty to obtain hemostasis during the biopsy or other minor surgery. A flat plastic cylinder made of a disposable syringe effectively stops bleeding and procedures are easily carried out with a clean surgical field. It is believed to be inexpensive, durable and easy to be sterilized. (Korean J Dermatol 2003;41(4) : 499~501)

원형 파일의 파압분포특성에 관한 실험적 연구

함계운,박준일,장대정 경상대학교 생산기술연구소 2003 工學硏究院論文集 Vol.19 No.-

The computation of the water wave forces on offshore structures is one of the primary tasks in the design of the structures. It is also one of the most difficult tasks since it involves the complexity of the interaction of waves with the structures. The Morison equation assumes the wave force to be composed of inertia and drag forces linearly added together. The purpose of this paper is to investigate the wave forces acting on the cylinderical piles. Author set up a cylinderical piles model into 2 dimensional regular wave tank with vaned wave height, water depth, and wave period, and observed wave forced. In practice the wave forces depending on wave height, water depth, and wave period were predicted through the experimental model test. It is presented a good tool to predict qualitatively the wave forces acting on the cyinderical piles.

GIS를 위한 홍수유출해석에 관한 연구

박준일,함계운,성오경,장영태,김경훈 경상대학교 생산기술연구소 2003 工學硏究院論文集 Vol.19 No.-

In the rainfall-runoff simulation, it is crucial problem to extract the hydrologic topographical factors that are used as the model input parameters. Those factors are drawn out from DEM(Digit a1 Elevation Model) along with GIS(Geographic Information System) techniques represent a wide range of topographical informations. GIS is employed to estimate the parameters and examine application. Also, the results from different GIS data and analysis methods are examined. In the study, spatial data are calculated using WMS(Watershed Modeling System) v.6.1, which is hydrologic analysis software coupled with GIS, and flood analysis is accomplished by HEC-1 included in WMS, and applied to Dukchon River basin. To calculate the effective rainfall CN values of NRCS are used. Clark, Snyder and NRCS methods are selected to derive unit hydrograph respectively. In addition, the characteristics of runoff responses according to the selection of GIS spatial data for NRCS CN, TIN or Grid used to extract hydrologic topographical informations. and the number of partitioning sub-basin are investigated.

부신 결핵에 의한 Addison씨병 1예

송치운,구본정,안봉수,전준식,안미애,이진홍,송민호,김영건,노흥규 충남대학교 의과대학 지역사회의학연구소 1995 충남의대잡지 Vol.22 No.2

Addison's disease is a rare primary adrenal insufficient disorder resulting from chronic deficiency of adrenal cortical hormones. Clinical manefestations are generalized weakenss, weight loss, hyperpigmentation (especially sun exposed area and mucous membrane), hypotension, hyponatremia, hyperkalemia, gastrointestinal symptoms (involving anorexia, nausea, vomiting, abdominal pain). A 34-year-old woman has experienced slowly progressive generalized weakenss and skin pigmentation, anorexia, nausea, vomiting with ascites and diffuse abdominal pain. On the time of admission, her main clinical manifestations were anorexia, nausea, vomiting, fatigue, generalized weakness, amenorrhea, hair loss, diffuse abdominal pain revealed as Addison's disease due to bilateral adrenal tuberculosis. Her adrenal insufficient symptoms were recovered with the replacement of adrenocortical hormones and antituberculous medications. After treatment, Her skin pigmentation was decreased and menstruation was reappeared. Here we experienced one cases of Addison's disease with tuberculous peritonitis.

2次元-表層密度流場의 解析에 있어서 境界層近似 適合性 檢討 : K-ε모델의 경우 with k-ε Model

金基興,咸契運,朴浚一 慶尙大學校生産技術硏究所 1995 生産技術硏究所論文集 Vol.11 No.-

Solving buoyant surface jet, the most important problem is the expression of turbulent transport. In this study, the compatibility of boundary layer approximation of k-ε model which has been applying to predict the turbulent transport in buoyant surface jet are considered. The results which has been comparing the computations of boundary layer approximation equations and full equation with experiments showed. As the result of this study, the hypothesis of boundary layer approximation does not express the transport by mean buoyancy in buoyant surface jet exactly, the hypothesis of boundary layer approximation is not valid for simulation of buoyant surface jet with k-ε model.