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김병삼,Kim, Byeong-Sam 한국과학기술단체총연합회 1996 과학과 기술 Vol.29 No.6
지난 3월 미 캘리포니아서 열린 제35회 미국독성학회는 30여개국서 5천여명의 독성학자들이 참석해 1천8백여편의 논문이 발표되었다. 이 학술대회에 참석하고 돌아온 울산대 김병삼교수의 참관기를 싣는다.
김병삼,임경호,나양기,김희곤,김월수 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-
This study was carried out to investigate the effects of root pruning methods for tree vigor stability and flower bud differentiation of 'Sunaga Wase' peach. The treatment was one side 10㎝, 20㎝ and both sides 10㎝, 20㎝ depth under canopy in after summer pruning. Among the treatment, canopy volume was 0.26㎥ lower than non-treatment and flower bud differentiation and Fruit yield increased 18.8%, 9% on both sides root pruning 20㎝ depth, therefore suitability root pruning method of density peach tree was both sides root pruning 20㎝ depth.
불규칙 이동분포하중을 받는 타이어의 구조 진동 소음 제어를 위한 음향방사 해석
김병삼,이성철 한국소음진동공학회 1995 소음 진동 Vol.5 No.2
A theoretical model has been studied to describe the sound radiation analysis for structural vibration noise control of tire under the action of random moving line forces. When a tire is analyzed, it has been modeled as a curved beam with distributed springs and dash-pots which represent the radial, tangential stiffness and damping of tire, respectively. The reaction due to fluid loading on the vibratory response of the curved beam is taken into account. The curved beam is assumed to occupy the plane y = 0 and to be axially infinite. The material of curved beam and elastic foundation are assumed to be lossless, and governed by the law of Bernoulli-Euler beam theory. The expression for sound power is integrated numerically and its results examined as a function of Mach number(M), wavenumber ratio(.gamma.) and stiffness factor(.PSI.). The experimental investigation for structural vibration noise of tire under the action of random moving line forces has been made. Based on the STSF(Spatial Transformation of Sound Field) techniques, the sound power and sound radiation are measured. The experimental results show that operating condition, material properties and design factors of the tire have a great effect on the sound power and sound radiation characteristics.
김병삼,홍동표 한국소음진동공학회 1994 소음 진동 Vol.4 No.4
자동차는 생활수준이 향상됨에 따라 급속히 보급되어 필수품이 되고 있다. 어느 교통 수단보다 대중적인 자리에 있는 자동차는 성능면에 있어 크게 발달하여 지역산업의 성장을 촉진하고 지역간 격차를 해소하는데 크게 기여하였다. 또한, 쾌적한 생활환경을 추구하고자 하는 개개인의 욕망에 의해 단순히 교통수단이라는 인식에서 벗어나 안락함이 요구되고 있고, 환경소음 규제의 강화로 인해 환경보호 의 차원에서 고려되고 있다. 타이어는 고속으로 주행하는 자동차의 주소음원으로 인식되고 있는바 안락하고 조용한 자동차 개발에 있어 우선적으로 고려되는 대항 으로 자동차 소음규제의 강화와 더불어 활발한 연구가 요구된다.
김병삼,이태근,홍동표 한국소음진동공학회 1993 소음 진동 Vol.3 No.3
The problem of sound radiation from infinite elastic beams under the action on harmonic moving line forces is studies. The reaction due to fluid loading on the vibratory response of the beam is taken into account. The beam is assumed to occupy the plane z=0 and to be axially infinite. The beam material and elastic foundation are assumed to be lossless and Bernoulli-Euler beam theory including a tension force (T), damping coefficient (C) and stiffness of foundation $(\kappa_s)$ will be employed. The non-dimensional sound power is derived through integration of the surface intensity distribution over the entire beam. The expression for sound power is integrated numerically and the results examined as a function of Mach number (M), wavenumber ratio$(\gamma{)}$ and stiffness factor $(\Psi{)}$. Here, our purpose is to explain the response of sound power over a number of non-dimensional parameters describing tension, stiffness, damping and foundation stiffness.
가진에 의한 승용차 타이어의 음향방사특성에 관한 실험적 연구
김병삼,이태근,홍동표 대한기계학회 1993 대한기계학회논문집 Vol.17 No.10
Vibration characteristics of a tire play an important role to judge a ride conformability and sound quality for a passenger car. In this study, the experimental investigation for the sound radiation of a radial tire has been examined. Based on the sound intensity techniques, the sound pressure field and the sound radiation are measured. It turns out that air pressure in tire, tread patterns, and aspect ratio of the tire govern the sound radiation characteristics. Then a numerical analysis for the tire element is conducted. During analysis, the tire element is modelled as an elastic ring. The comparison shows that the numerical output correlates to the experimental data.
Ketamine 전투여가 목표농도조절주입을 이용한 Propofol 마취유도 및 각성에 미치는 영향
김병삼,김창성,김은성,유건희 대한마취과학회 2000 Korean Journal of Anesthesiology Vol.38 No.4
Background: Profol is increasingly being used as an anesthetic since the introduction of the TCI(taget controlled infusion) technique, but previous reports have demonstrated that thpotension and injection pain occur especially during fast infusion of propofil. We therefore studied the effect of ketamine preadministration on induction and recovery when using profol TCI. Methods: Thirty-four patients undergoing elective surgery withen 2 hours were rendomly assigned to one of two groups according to induction methods Group P(profol TCI, 6 ㎍/ml,flash mode), Group KP(ketamine 0.25 mg/kg followed by profol TCI, 4.5 ㎍/ml,flash mode). Anesthesia was maintained with fentanyl,N_2O, and propofol TCI. Outcome measures were induction time, injection pain, hemodynamic responses during induction period, profol doses, emergence time and postoperative side effects. Results : Incidence of injection pain and induction dose of propofol were significantly reduced in Group KP but there was no significant difference in induction time, emergence time or postoperative side effects between two groups. Heart rates showed no differences between the two groups, but the changes of mean arterial perssures from base line at 30 sec after intubation were significantly greater in Group P compared to Group KP. Conclusions : During fast induction with the flash mode of propofol TCI,small amounts of ketamine preadministration could significant reduce the target concentration for hypnosis, injection pain and hemodynamic changes without a delay of emergence and an increase of postoperative side effects. (Korean J Anesthesiol 2000; 38: 584-590)