염기성세균의 생화학적 동정을 위한 Thiogly collade broth의 개량

김상렬 忠北大學 1979 論文集 - 忠北大學校 Vol.17 No.-

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산소농도 변화에 따른 입상활성탄의 자연발화에 관한 연구

김상렬,목연수,최재욱,류동현,최일곤 한국산업안전학회 1995 한국안전학회지 Vol.10 No.2

The characteristics of critical spontaneous ignition of granulated activated carbon were investigated in atmospheres of differing oxygen concentration. At the same concentration the larger vessels yielded the lower critical spontaneous ignition temperature. At the same vessel, as the concentration of oxygen was reduced, ignition occurred later and at higher ambient temperature, and critical spontaneous ignition temperature increased. The apparent activation energy calculated from the Frank-Kamenetskii's ignition theory appeared to be the slight different value respectively and the mean apparent activation energy was 19850㎈/㏖.

활성탄의 자연발화에 있어서 발화유도시간과 온도분포에 관한 연구

김상렬,이상록,최재욱,최광재 한국산업안전학회 1993 한국안전학회지 Vol.8 No.3

The spontaneous ignition induction time and temperature distribution were observed by performing experiments for granulated activated carbon. As the results of the experiments at the same amplitude, the critical spontaneous ignition temperature was decreased with increase of the time period, while, the ignition induction time was increased with the increase of the time period. The critiral spontaneous ignition temperature was decreased with the increase of the amplitude for the shorter period. The temperature distribution of the sample showed the highest around ignition-point at center of the vessel and after ignition the highest temperature was moved toward surface of the vessel.

패키지 반도체소자의 ESD 손상에 대한 실험적 연구

김상렬,김두현,강동규 한국산업안전학회 2002 한국안전학회지 Vol.17 No.4

As the use of automatic handling equipment for sensitive semiconductor devices is rapidly increased, manufacturers of electronic components and equipments need to be more alert to the problem of electrostatic discharges(ESD). In order to analyze damage characteristics of semiconductor device damaged by ESD, this study adopts a new charged-device model(CDM), field-induced charged model(FCDM) simulator that is suitable for rapid, routine testing of semiconductor devices and provides a fast and inexpensive test that faithfully represents ESD hazards in plants. High voltage applied to the device under test is raised by the field of non-contacting electrodes in the FCDM simulator, which avoids premature device stressing and permits a faster test cycle. Discharge current and time are measured and calculated. The characteristics of electrostatic attenuation of domestic semiconductor devices are investigated to evaluate the ESD phenomena in the semiconductors. Also, the field charging mechanism, the device thresholds and failure modes are investigated and analyzed. The damaged devices obtained in the simulator are analyzed and evaluated by SEM. The results obtained in this paper can be used to prevent semiconductor devices from ESD hazards and be a foundation of research area and industry relevant to ESD phenomena.

의식하 진정에 사용된 약물에 관한 임상적 연구

김상렬,김수관,여환호 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.4

The purpose of this retrospective study is to investigate the effects of conscious sedation in an outpatient setting. Data from 292 patients (154 males, 138 females), sedated for minor oral surgery, were studied using various parameters including age and sex distribution, as well as according to procedures and each drug group. Results show that this intravenous conscious sedation technique is a safe and effective method of controlling behaviour, but one has to be prepared to deal with any emergencies or complications. The specific results are as follows : 1.Most procedures (265/292) were used to Valium mixed with Demerol and Midazolam mixed with Demerol. 2.Valium revealed a high incidence of pain upon injection and symptoms limited to daily activity and thrombophlebitis. 3.Nausea and vomiting manifested in the procedure using Demerol. 4.The patient manifested comfort similar in response to the same drugs used in another treatment.

기포탑에서 점성수용액의 가스전달에 관한 연구

김상렬,최일곤 한국산업안전학회 1994 한국안전학회지 Vol.9 No.3

The gas holdup and volumeteric liquid phase mass transfer coefficient with the variation of the concentration of CMC aqueous solution, gas velocity, diameter and area of the draught tube were investigated. As the results of the experiments, the gas holdup and volumetric liquid phase mass transfer coefficient decreased with decreasing the concentration of CMC aqueous solution, increased with increasing the gas velocity and increased with increasing the circulated area ratio of the draught tube.

유해위험작업의 안전작업을 위한 조사 연구(Ⅰ) : 프레스 , 크레인 , 공기압축기 중심으로 Press , Cran , Air Compressor

김상렬,이윤호,김정동 한국산업안전학회 1993 한국안전학회지 Vol.8 No.4

This study is conducted for both examination of a possiblity of danger and investigation of operational condition of selected 120 companies, to establish the safety standard of workplace hazards.

HVAC용 룸 유니트 (Room Unit)의 소음저감성능해석

김상렬,김현실,이성현,김봉기,김재승 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5

In this paper, acoustic performance of the large-sized room units for ship HVAC system is studied. The room unit consists of a rectangular chamber of which inside partitions are covered by absorptive material with fabric skin. The room unit has one inlet and three outlets. At the inlet, a plane damper is installed to control the flow rate. The acoustic performance of a prototype room unit is measured using a HVAC mock-up. It is shown that insertion loss is comparable with that of a commercial room unit, although the prototype generates more flow noise than the commercial product. The major source of flow noise is analyzed by NADS-R, the noise analysis program for room unit. In order to reduce the flow noise, cone-shaped dampers are inserted into the room unit. It is shown that the cone-shaped damper decreases flow noise remarkably.

Effects of Environmental and Biological Conditions on the Recruitment and Growth of the Manila Clam Ruditapes philippinarum on the West Coast of Korea

김상렬,권순현,이형곤,유옥환 한국해양과학기술원 2017 Ocean science journal Vol.52 No.1

The distribution of the Manila clam Ruditapes philippinarum, which is often dominant in intertidal zones, is influenced by both environmental and biological conditions. However, there have been few comprehensive studies on the interactive effects of these two groups of factors. The present study examined the environmental and biological parameters determining the population dynamics of the clams that is a dominant component of the intertidal communities of Euhangri and Padori on the west coast of Korean peninsula. We collected R. philippinarum and other members of the macrobenthos (> 1 mm long) monthly from 0.25 m2 quadrats deployed in the intertidal zones at Euhangri, Taean, and Padori during the period from August 2013 to January 2015. Physicochemical parameters of the water and sediment were measured at the same time. Water temperature and salinity is high and low in the summer to winter, respectively. While mean grain size of the sediment was higher at Euhangri than at Padori, total mean density of R. philippinarum was higher at Euhangri (325 ind./ 0.25 m2 at Padori vs. 194 ind./0.25 m2 at Euhangri). Settled spat (< 10 mm in length) density was much higher at Euhangri than at Padori (132 vs. 12 individuals/0.25m2, respectively). R. philippinarum spats settled down on the sediment at Euhangri in October and grew continually until the following May, when they reached adult size. Spats that settled down at Padori between March and April were not able to reach the adult stage. As the density of the adult population increased, the condition index of individual clams decreased, but as the population density of the spat increased the body condition index increased. The chlorophyll a content of the sediments at Padori exceeded that at Euhangri and decreased as the population of R. philippinarum increased. The shapes of R. philippinarum shells at Euhangri were more prolate than those at Padori, and the condition index at Euhangri exceeded that at Padori, indicating better growth conditions at Euhangri. The condition index and density of R. philippinarum were affected by the amount of chlorophyll a in the water column and in the sediment. The recruitment success of spats was negatively influenced by spat density. We suggest that regulation of habitat conditions for R. philippinarum, including the food supply, will optimize production of these commercial clams.

건조 공정 중 요소 수지 성형재료의 경화 특성에대한 물질전다 효과

김상렬,최일곤,김병철 한국화학공학회 2002 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.40 No.6

산업 현장에서 이론적인 건조방법이 실제와는 차이가 많고 또한 배기가스의 재순환이 폐열을 이용하는 목적으로 열원의 절감에는 경제적이지만 이들 파라미터에 따른 요소수지 성형화에 미치는 영향을 연구한바가 없다. 따라서 요소 수지 성형재료의 경화 특성을 건조와 성형 공정 중의 건조온도와 시간, 배기가스 재 순환률 및 성형온도에 따라 실험하여 다음과 같은 결과를 얻었다. 성형재료의 수분함량은 건조 시간과 건조 온도가 증가함에 감소하고, 건조속도는 배기가스 재 순환률이 증가하면 감소한다. 특히 경화유동도는 배기가스의 재 순환량, 건조온도 및 성형온도가 증가하면 감소한다. 또한 건조온도, 건조시간, 배기가스의 재 순환량 및 성형온도에 따라 수분함량과 경화유동도에 대한 상관식을 구하여 재현성있는 최적의 조건을 구명하였다. In the industrial field, the theory of drying process is different from the practical application, and it is effective to reduce energy by recirculation of the heat of exhausting gas. But the study of this field may not be performed still. The cure properties of the urea resin moulding compounds was investigated according to drying temperature, drying time, recycle rate of exhausting gas and moulding temperature in the process of drying and moulding. We obtained the following results; water content of material decreases with increasing drying time and drying temperature, and the rate of drying also decreases with increasing recycle rate of exhausting gas. Specially, The cure fluidity of the urea resin moulding compounds decreases, with increasing drying temperature, recycle rate of exhausting gas and moulding temperature. And the correlation equations on water content and cure fluidity of the urea resin moulding material were obtained through a regression analysis of experimental data.