플라즈마 이온주입기에서의 시변환 쉬스 연구

김곤호,김건우,김영우,최영도,김종식,김상진,한승희,홍문표 漢陽大學校 工學技術硏究所 1998 工學技術論文集 Vol.7 No.1

Abstract- In a plasma source ion implantation, the target is successively biased by negative voltage pulses with an intrinsic finite rise time, resulting in the time-dependent sheath formation around the target. Measurement of time-dependent sheath during the pulse rise show the ion matrix sheath development which is in proportion to square root of time and pulse rise rate over plasma density but independent of the ion mass.

배달 미니 게임 개발:"최고의 웨이터를 꿈꾸며"

김정훈,정한교,김영옥,김중곤,박정윤,윤진성,김경식 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-

본 미니 게임은 웨이터라는 직업을 모티브로 하여서 남녀노소 누구나 재미를 느낌과 동시에 기억력 향상시켜 주는 게임제작이라는 목적아래 제작되었다.본 논문에서는 이 게임의 제작과정을 기술하고자 한다.이 게임은 제3회 AGC(한국 아마추어 게임제작 공모전)에서 우수 작으로 선정되었다.

향기요법이 통증을 주소증으로 입원한 환자의 수면장애에 미치는 영향

박수곤 ( Soo Gon Park ),양미성 ( Mi Sung Yang ),김오영 ( Oh Young Kim ),조희근 ( Hee Guen Jo ),최진봉 ( Jin Bong Choi ),김선종 ( Sun Jong Kim ),설재욱 ( Jae Uk Sul ) 한방재활의학과학회 2010 한방재활의학과학회지 Vol.20 No.4

Objectives :The purpose of this study is to investigate the effects of aroma therapy on sleep disorder patients with musculoskeletal pain. Methods :The 44 patients were divided into 2 groups: Experimental group(Exp. group) was treated with aroma therapy and control group was treated except aroma therapy. To evaluate the efficiency of aroma therapy, the Korean sleep scale A(Jin-Joo Oh, Mi-Soon Song, Sin-Mi Kim. 1998) and visual analogue scale(VAS) were applied before treatment and after 5 days treatment. Results :1. The Experimental group has improved statistical significance in sleep disorder score as compare to the control group. 2. The improvement of sleep disorder score of Exp.group has difference according to impression. 3. The improvement of sleep disorder has an effect on pain decrease. Conclusions :Aroma therapy has effects of improvement on sleep disorder with musculoskeletal pain.

복합레진 인레이의 내면처리와 합착용 시멘트의 종류에 따른 인장접합강도에 관한 연구

김진철,조영곤,황호길 大韓齒科保存學會 1993 Restorative Dentistry & Endodontics Vol.18 No.1

格技種目 選手들의 心拍數 回復에 關한 硏究

金義榮,金振杓,鄭渭坤 龍仁大學校 1992 용인대학교 논문집 Vol.8 No.-

University Students Haue Been Chssen 25 Peoples among Hapkido, Boxer, Ssireum playens Luy measuring the amount of heath that was Pioduced using a Piocess Called sitting sttitude, lying down, standing, and the saliyect breathes aften 100m Running that was estimate throuth each others Type of body measwring the amount of circuit Sgstems. According to the study allewed these conclusions. ① Aftes 100m running that the bseardown of enengg resalted in heat and that estimate the Hapkido playes 160.4±1.3times/min sate, Boxing Playes 160.6±3.7times/min sate, Ssireum playes 160.8±7.1time/min sate, Hapkido playes could be estimated much mone highly lug measuring the amount of 160.8±7.1times /min sate. ② A.Breath of nestfal prion to the test that Hapkido peages was estimatde 68.4±52times/min, Boxes 68.3±6.1 time /min, Ssireum playes 76.1±6.2time/min, Ssireum peayes could be estimated mach mone lowgy buy measuning, ③ A body of neetbul prion to the test that estimated the hasten buy the bmeardown of Rest standing than bying down. ④ Aften 100m Running that estimated the fasten bying down mose standing. ⑤ The bneardown of heat abtes 100m running that Boxing playes the most bastest and ssireum lowest. The result abtained bon the analysio of the association between Hapkldo's beuel of breathing attitude, Boxing and Ssireum playes wese mose exescise the highes Hapkido than anothes exercise.

2차원 해석을 이용한 지하복합구조물 설계의 문제점 : 지하철 정거장을 중심으로

김형곤,조현영,정진환 釜山大學校生産技術硏究所 1997 生産技術硏究所論文集 Vol.52 No.-

본 연구에서는, 3차원 지하구조물이 2차원 뼈대조구조해석에 의해서 설계될 때의 문제점 들, 즉 갑작스런 단면의 변화, 개구부, 길이방향으로의 지반상태의 변화들이 검토 되어진다. 구조물들 3차원 해석에서 실제구조물과 가능한한 가장 근사하게 FEM에 의해 이상화되어진다. 본 연구로부터, 다음과 같은 두가지 결론을 내릴수 있다. 첫째, 개구부가 존재하는 곳에서는 보다 정확한 휨 모멘트분포를 얻기 위해 3차원이나 판이론에 의한 세부적인 해석이 수행되어져야 한다. 둘째, 건조수축, 수화열 그리고 힘의 분배에 대한 길이방향 보강을 결정하기 위해서는 더 세심한 검토가 필요하다. In this study, the problems when 3-D underground structures were designed by using 2-D plane frame structure analyses, such as sudden changes of sections, openings, and the variations of the ground conditions in the longitudinal directions, were investigated. The structures were idealized by FEM as close as possible to the real structures in 3-D. From this study, the authors conclude following two results. First, 3-D or detailed analysis with plate theory where openings exist must be carried out to obtain more accurate bending moment distribution. Second, a more refined investigation is needed to determine the longitudinal reinforcement due to shrinkage, the heat of hydration and the distribution of forces.

거푸집-동바리 시스템의 붕괴현황조사 및 원인분석

김곤묵,김호수,정성진,곽순섭 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

This study analyzes the defect causes under the investigation of collapse situation in form-shore system through the analysis of design criteria, loading and work conditions. Specifically, these defect causes can be classified as the three cases from the results of the investigation. Those are the external, design and construction defects which are closely related. So, one defect can induce another defect and this can lead to the collapse accident of form-shore system. Therefore, this study presents the improvement method to solve the problems relating to the design process and the actual construction application according to the defect causes.

SECKEL 증후군 환자의 증례보고

김추성,김재곤,백병주,양연미,정진우 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.1

Seckel 증후군은 상염색체 열성 유전질환으로 태내에서의 성장지연에 따른 출생 후의 소인증, 심한 소두증을 나타내며, 큰눈과 돌출된 코, 후퇴된 하악을 동반한 새 모양의 안모가 특징적이다. 다른 임상증상으로는 관절의 결함, 내반족, 드문드문 난 모발, 비뇨생식기의 이형성, 정신지체, 혈액학적 이상 등이 나타날 수 있다. Seckel 증후군의 구강 내 소견으로는 부정교합, 법랑질 저형성증, 일부 치아의 선천적 결손, 우상치 등이 나타날 수 있다. 본 증례는 Seckel 증후군을 보이는 두 증례에서 발육부전, 새 모양의 안모, 비뇨기과적 기형, 치아의 저형성과 부정교합 등 다양한 전신증상과 구강 내 증상들을 보였기에 이를 보고하는 바이다. Seckel syndrome is an autosomal recessive disorder characterized by intrauterine growth retardation and post-natally by dwarfism, severe microcephaly, bird-headed profile with receding chin, prominent nose, joint defects, clubfoot, sparse hair, malformation of genitourinary tract and rectum, mental retardation and hematological disorders. There is also a reduction in the number of blood cells. Dental anomalies of Seckel syndrome are crowded teeth with malocclusion, enamel hypoplasia, absence of some teeth and taurodontism. This report described the oral and maxillofacial manifestations of children associated with Seckel syndrome. Children with Seckel syndrome have several dental and skeletal irregularities. The purpose of this study was to report the dental and medical characteristics of the patient and review the literatures of Seckel syndrome.

약한 외부자장에 의한 유도결합형 플라즈마에서의 Helicon wave발생에 관한 연구

김상진,노태협,김곤호 한양대학교 이학기술연구소 2001 이학기술연구지 Vol.3 No.-

본 연구에서는 대면적 금속반응기에 I3.56MHz RF 전력을 인가하여 ICP(Inductively Coupled Plasma)를 발생하고, 외부에 약한 자기장(B<70G)을 인가하였을 때 플라즈마 내부에서 helicon wave의 전파현상을 관찰하였다. 기존의 ICP에 사용되는 안테나와 달리 직경이 서로 다른 두 개의 1turn 안테나를 직렬연결하여 안테나의 내부와 외부에 흐르는 전류의 방향을 반대가 되도록 하였다. 안테나에 의해 유도되는 자기장의 시간에 따른 변화량( ∂B/ ∂t)을 자기탐침을 이용하여 측정하였으며 유도되는 자기장의 θ방향성분을 측정하여 비대칭성을 갖는 m =1 mode임을 확인하였다. 발생된 플라즈마의 밀도는 Langmuir탐침을 이용하여 측정하였고, 측정된 밀도는 2.4 X 10^(10)cm^(-3) ~ 2.25 X 10^(11)cm^(-3) 이었다. 측정한 밀도와 외부에 주어진 자기장을 dispersion relation에 대입하여 계산된 wave number와 자기탐침을 이용하여 측정한 wave number를 비교하여 전파된 wave가 helicon wave 와 일치함을 확인하였다. This study was on the helicon wave propagation in an ICP(Inductively Coupled Plasma), which was generated by I3.56MHz RF power in a large area metal chamber with low external B-field(B<70G). Unlike a usual antenna for ICP, two different diameter I-turn antenna was connected in serial to opposing a current flowing the inner and the outer antenna. Time dependent B-Field( ∂B/ ∂t ), induced by the antenna was measured by a magnetic probe. It was confirmed m=I mode wave propagation by measuring θ component of the induced B-field. Plasma density was measured by Langmuir probe. It was 2.4 X 10^(10)cm^(-3) ~ 2.25 X 10^(11)cm^(-3)? By comparing a wavenumber which is calculated from the measured density and external B-field to a wavenumber measured by the magnetic probe, the helicon wave propagation has been confirmed.

기니픽에서 Magnesium의 혈관 이완과 혈압 하강 효과

김정곤,강형섭,김진상 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.2

The present study evaluated the effects of various agents on magnesium sulfate (Mg^(2+))-induced relaxation in aorta and blood pressure lowering in anesthetized guinea pigs. Mg^(2+) inhibited phenylephrine (PE)- or 40 mM KC1-induced sustained contraction of endothelium-intact (+E) guinea pig aortic rings in concentration-dependent manner. In preparations preconstricted with PE or KC1, Mg^(2+)-induced concentration-dependent relaxations. In preparations preconstricted with PE or KCl, Mg^(2+)-induced relaxations were not affected by the removal of endothelium (-E) and by the pretreatment of aortic rings with NO synthase (NOS) inhibitors (L-NAME and LNNA), guanylate cyclase inhibitors (methylene blue and ODQ, adenylate cyclase inhibitor (MDL), K^(+) channel blockers (glibenclamide and tetrabutylammonium), nifedipine or ryanodine. However, Mg^(2+)-induced relaxations were inhibited by Na^(+)-Mg^(2+) exchange inhibitor (imipramine) or removal (or attenuation) of extracellular Ca^(2+) in +E aortic rings. PE-induced contraction was not inhibited by nifedipine. In addition, Mg^(2+)-induced relaxations were inhibited by phospholipase C inhibitor (NCDC) or inositol monophosphatase inhibitor (lithium), but not by protein kinase C inhibitor (staurosporine). In vi패 infusion of Mg^(2+), directly into the femoral veins of guinea pigs, elicited sustained decrease in arterial blood pressure. The Mg^(2+)-lowered blood pressure was attenuated by intravenous administration of imipramine or lithium, but not by methylene blue, indomethacin, tetrabutylammonium nifedipine, LNNA, L-NAME or saponin (as an endothelium removal agent). These results suggest that endothelium independent vasorelaxant effect of Mg^(2+) on aortic ring appear to play important roles on the antihypertensive action in guinea pig, most likely via the inhibitory action of Mg^(2+) on the intracellular C^(2+) involve in PLC-IP pathway and influx (through the Na^(+)-Mg^(2+) exchanger) into the cell in guinea pig aorta.