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김건희,김효식,양순철,이상용,국명호,이선규,김윤중,홍권희 한국공작기계학회 2007 한국공작기계학회 추계학술대회논문집 Vol.2007 No.-
This paper describes development of low cost precision machine that has combined the Build-in Motor with a vacuum chuck. This study mainly aims to find out a cutting condition for maintaining optimum surface condition and to examine cutting characteristics of the precision machine that is equipped by diamond bites. The cutting materials is Al alloy. Several experiments were carried out to find out the main factors that affect the surface roughness such as principal axis RPM(rotation per minute), feeding speed, and cutting depth. As a result, we obtain The optimum cutting condition of the developed precision machine.
김태민,김효식 제주한라대학 1998 論文集 Vol.22 No.-
It is about time to have overall change and new direction in the area of the National Examination for the First Level Emergency Medical Technicians 1st. E.M.T. since all the health care related examinations including emergency service area are newly in charge of the National Health Personal Licensing Department. Furthermore the great change is expected on the National Examination for the 1st. E.M.T, because of the fact that the ministry of health and social welfare announced a matter of revision in legislation related to the administration of laws and regulations in emergency service, and claimed to have overall reform in the area of the National Examination for 1st. E.M.T. from January 2000. The National Examination for the 1st. E.M.T. should be revised to be a reliable tool to measure abilities, knowledge, skills, attitudes of the 1st. E.M.T. To solve general problems in the matter of subject selection, the degree of difficulty of the test, the style and the number of the test items, revision and management of the items, proper time and place selection for the national examination, and the test for the practicum and physical strength, following suggestions need to be accomplished. (1) Title and relative importance of the subjects of the test should be adjusted to parallel with the tasks of the emergency medical technicians. (2) The test should be based on the text books which are written according to the goals and objectives of the subjects. (3) Overall test item numbers and ratio of the test style need to be balanced considering other healthcarerelated national examinations. (4) The degree of the difficultly and validity of the test need to be evaluated, and test items should be revised, added, and secured. (5) Consideration should be given to the students from the local areas, shortening the period of the test or changing the test place to the local areas. (6) The validity of the tests for the practicum and physical strength needs to be evaluated, and evaluation tool should be revised as well.
김원택,김승범,정세호,강효식 濟州大學校 師範大學 科學敎育硏究所 1995 科學敎育 Vol.12 No.1
Community organization of the drosophilid flies was investigated with respect to the seasonal variation in species abundance and vertical microdistribution on the basis of the trapped collections in the two natural forests on Cheju-do from May to October 1994. The dominant species were Drosophila bizonata. D. curviceps. D. lutescens. D. angularis. D. pengi. and D. immigrans in the annual collections. The pattern in seasonal changes of the dominant species was similar at the two survey sites. Seasonal fluctuation in the species diversity was more affected by evenness than by species richness (number of species). The seasonal variation of abundance showed an unimodal pattern in all of the dominant species. The seasonal patterns of vertical microdistribution revealed difference in some of the dominant species between the two survey sites. These results suggest that the predominant species in the forest avoid niche overlap by means of seasonal separation of breedings and that the vertical microdistribution is strongly affected by factors associated with season and vertical site in the deep wooded forests.
악골에 발생한 중심성 골종(Central Osteoma)의 치험례
김일규,김효정,최진호,장금수,오남식 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.1
Two cases are described of Endosteal Osteoma which developed in the Jaw bone and were painful. The tumors were radiographically characterized by dense radiopaque lesion. The surface was smooth and overlying mucosa was normal in color. Tentative diagnosis was OSteoma. The tumors were treated surgically. Postoperatively the patients made uneventful recovery and the wound healed satisfactory. Postoperative radiograph showed that radiopaque mass had been completely removed. Histologically, biopsy was reported as Central Osteoma. Subsequent follow-up examinations show no recurrence of the lesion or the pain.
金敬植,崔勝寬,寓昔珍,申一卿,朴勝浩,李東熙,李東建,張孝善 호서대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.19 No.-
In this paper, features and efficiencies of the 3D engine are described which has been developed through the research of 3D real time rendering techniques. And an on-line shooting game "3D Fortress" which has been developed using this 3D engine with server technologies is introduced for the techniques and methodology applied in the process of development of the game as well as the features and discussions of its implementation.
베효준,조연상,김동호,서영백,박흥식 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.2
The wear particles is released from the moving surfaces in gear systems of transmission and its morphology is directly related to the damage and failure to gear systems from which the particles originated. It is the effective method to diagnosis damage process of gear systems of automobile transmission to observe wear particle in gear oil. We tested with new transmission and took out gear oil according to drive distance. To be applied to damage diagnosis of gear system in transmission of automobile, 4 shape parameters of wear particles in gear oil were calculated and wear volume were presumed with the image processing system.
노후된 잔교식의 항만구조물의 신뢰성에 기초한 안전성 및 내하력평가
조효남,김성훈,노홍식,임종권,이우근 한양대학교 공학기술연구소 1995 공학기술논문집 Vol.4 No.1
This study is intended to propose a reliability based approach to safety assessment and berth-capacity rating of aged wharf structures based on measured data acquired from an extensive dynamic field load testing against berth impact of real ships. The study comprises the essential part of a project for assessing actual berth-capacity of deteriorated and damaged dolphin structures at the Onsan oil refinery wharf currently operated for the berth of oil refinery ships of 20,000 DWT.
토끼에서 enrofloxacin과 enrofloxacin acetate의 比較藥物動態學
윤효인,박승춘,김창식,김민규,최기섭,신광순,박종일,조준형,조명행 충남대학교 수의과대학 동물의과학연구소 1996 動物醫科學硏究誌 Vol.4 No.-
This study was designed to examine the in vitro antibacterial activities and pharmacokinetics of enrofloxacin acetate (ENFXA) and enrofloxacin (ENFX). Two enrofloxacins had wide spectrum antibacterial activities against Gram positive and negative bacteria, and mycoplasma, showing potent antibacterial activities with low MICs (0.05-3.33 ㎍/㎖ for Gram positives, 0.002 ㎍/㎖ for Gram negatives and 0.02 ㎍/㎖ for mycoplasma). In order to investigate the profiles of two formulations of enrofloxacin we studied comparative pharmacokinetics of them in rabbits. Five rabbits were given 5 ㎎/㎏ body weight of each enrofloxacin formulation intravenously (i.v.) and orally (p.o.) in a cross-over study. Pharmacokinetic parameters of both formulations were calculated by the use of PCNONLIN, a computer program. Their bioavailibility in rabbits, the means of the area under the curve (AUC). After oral administration of each formulation in rabbits, the mean elimination half-lives (t_1/2,ke) were 3.25h (ENFX) and 4.32 h (ENFXA), and mean AUC 4.27 ㎍·h/㎖ (ENFX) and 6.21 ㎍·h/㎖ (ENFXA). Both enrofloxacin formulations seemed to have good tissue distribution and penetration as indicated by large volume of distribution: 4.76 1/㎏ for ENFX and 7.23 1/㎏ for ENFXA. With the results obtained in this study, ENFXA could be used in place of ENFX in rabbits.
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.