관동맥질환에서 저밀도 지단백 입자 크기의 분포

임효영,김인숙,승기배,강동헌,전두수,장기육,박준철,이수영,홍순조,최규보 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.8

바이오에너지 영향 측정을 위한 뇌자기 공명 영상검사의 유용성

김창규 ; 나수경 김천대학교 2007 김천대학교 논문집 Vol.28 No.-

MRI (Magnetic Resonance Image) is the image that devices from the character-istic frequencies of gyroscopic pression of nuclei in magnetic field. To evaluate the imaging quality of an 3.0 Tesla for magnetic resonance image. This paper analyzed the image quality value by magnet field size in pineal gland magnetic resonanceimages. As a result of this measurement, it has been found out through the quantitative assessment that the signal to noise from the 0.3Tesla acquisition MR images were deteriorated for the quality image comparing to those from the 3.0Tesla acquisition images. The 3.0Tesla provides magnetic resonance images with excellent inherent physical image quality. Also this study can be obtainęd the quality image from using magnetic field size in bio-energy effect magnetic resonance images

경안천의 애반딧불이 서식지 오염부하량 및 생태특성

김수복,고정문,홍순상,주덕현,홍윤기,김진성,김영규 용인대학교 자연과학연구소 2011 自然科學硏究所論文誌 Vol.16 No.1

The aim of this study was to research water quality, eco-nature and firefly habitant Keung An Stream from June to July. To conserve ecosystem of firefly habitant, We must manage to have a diverse aspect of ecology and water quality. This study was to research water quality, eco-nature and firefly habitant Keung We find 11 firefly habitat in Keung An Stream. To conserve ecosystem of firefly habitant, We must manage to have a diverse aspect of ecology and water quality.

水 海洋係 專門大學 通信科 敎育課程 開發 硏究

金永煜,金秀植,高南泳,梁義藏,金圭煥,文建,鄭東洙 군산대학교 1984 群山水産專門大學 硏究報告 Vol.18 No.1

We have studied on the curriculum to develop the communication department of the inter-related fisheries and marine junior college groups and abridged them as follows. (1) A vessel communication has the special characteristics compared with general communication field and also it has an aim to protect the lives and the property from dangerous navigation. For these reasons we must educate many competent graduates who are versed in business and accustom themselves to necessary knowledge of communication and can be adapted them selves to the advanced communication method, techniques and international information on the communication. (2) Training goal and way of thinking of students were rearranged and the occupational cluster in the electronic-communication field was fractionated to develop the curriculum. Especially regarding operator's duty served the above purpose as a occupational cluster, we analyzed their job in accordance with it. (3) International convention on standards of training certification and watchkeeping for seafarers, 1978 was reflected, also international telecommunication convention was referred so that it might be satisfied with the condition to be observed. (4) Developing the curriculum, we responed and analyzed the questions from scientific world, industrial organizations and graduates and provide their advice and suggestions form consultive committee and reflected them to develop the curriculum

염분이 함유된 폐수의 생물학적 처리시 염분농도가 오염물질의 제거에 미치는 영향

김상수,문병현,이택순,서규태,공남식 7개 국립대학교 환경연구논문집 공동발행 위원회 2005 공업기술연구 Vol.5 No.-

Effects of salt concentration and C/N ratio on pollutants removal efficiencies were investigated in treatment of seafood wastewater by sequence batch reactor(SBR). The synthetic seafood wastewater containing salinity from 3,000 to 10,000 mg/L NaCI and C/N ratio of 2 and 4 was treated by SBR. Removal efficiencies of COD_(Mn), T-N, and T-P decreased with increasing salt concentration, but eventually reached a pollutants removal a platrau. As systems adapted in salts until salts concentration of 8,000mg/L, the time required to reach the pollutants removal efficiencies at steady state was reduced. However, the removal efficiencies of pollutants sharply decreased and the time require to reach steady state was increased as salt concentration rose to 10,000mg/L, Removal efficiencies of COD_(Mn) were higher for C/N ratio of 4 than for 2. Effects of salt on the nitrogen removal were not faster than the organic removal but the time required to the nitrogen removal at steady state was ncreased. The removal efficiencies of phosphorus also were redueed as salt concentration increased, which inhibited the release of phosphorus than the uptake.

MRAC를 이용한 로보트 매니퓰레이터의 制御性能 向上에 관한 硏究 : Model Reference Adaptive Controller

김병수,김규로,선양래 慶熙大學校 大學院 1995 高凰論集 Vol.16 No.-

This paper is study on trajectory property of 6 DOF robot manipulator. This paper used to adaptive control and p-d(proportional-derivated) control for control methods, Simulation robot is stanford 6-dof robot manipulatr of stanford university. Main results obtained through this paper are summarized as followings. At each links, adaptive control has more excellant control than p-d control. At 1-st link, adaptive control and p-d control has a little error at 3.0 second. At 2 nd link, adaptive control and p-d control has a little error than other links without 3-rd link, At 3-rd link, two control methods has a superiority control results than other links with two control methods. At 5-st link, p-d control error is a most great than other links. Therefore, the adaptive control applications for 6-dof robot manipulator has a very excellant capability than applying classical p-d control.

톱밥탄의 성분과 흡착성능

김영규,김수복,장성환 龍仁大學校 自然科學硏究所 1999 自然科學硏究所論文誌 Vol.4 No.2

The removal organic materials are important in the drinking water. Activated carbon was used in water for purification of non-biodegradable compounds and was proved to be an effective process for removing many VOCs. And so, the major objectives of this study are to evaluate an sawdust carbon for the removal of non-biodegradable compounds. Adsorption equilibrium data was generated using conventional bottle-point techniques for determining the Freundlich isotherm equation. Sawdust carbon was effective to remove TCE than coconut carbon. So, Sawdust carbon had the value to make activated carbon to remove TCE.

현대무용의 Leap 동작에서 숙련자와 비숙련자간의 운동학적 변인 비교 연구

김복영,배성제,정철수,이정은,임규찬 師範大學 體育硏究所 1992 서울大學校 體育硏究所論集 Vol.13 No.1

The purpose of this study was to compare kinematics of the skilled group with the corresponding of the unskilled group during the leap of the mordern dance and to investigate the effective movement patterns of the leap. The kinematic and temporal variables examined using the DLT(Direct Linear Transformation) method of three-dimensional cinematography were leap time, leap distance, leap height and body segment angles at the instants of take off, peak height and touch down. Four skilled and four unskilled groups were selected as the subjects. Two 16mm high speed cameras were used to monitor the subjects’movement patterns. T-test was used to determine if there is any significant (p<0.05) differences on kinematic variables between the skilled and unskilled groups. The conclusions obtained from the analyzed data were as follows; (1) There were not any significant differences between two groups for the angles of body segment at the instant of take off and leap distance. (2) At the instant of peak height, the leap angle and the left ankle angle for the skilled groups were larger than for unskilled groups. (3) At the instant of touch down, the trunk angle in the sagittal plane for the skilled groups were larger than for unskilled groups. (4) The flight time and height for the skilled groups were longer and higher than for the unskilled groups.

연약 점토지반 성토시 Geotextile 효과의 실험적 연구

김수일,배규진 연세대학교 산업기술연구소 1982 논문집 Vol.14 No.1

Geotextile effects for embankments on weak clays are studied through the laboratory model experiments. The experiments are carried out in four stages; no geotextiles between clay-crushed stone boundary, geotextiles with no pretensioning, and two different geotextile pretensionings. The experimental model has dimensions of 32cm x 330cm in plan. The height for the clay container is 60cm. The 47cm height of crushed stones are laid on top of the 50cm clay layer. When geotextiles are employed, the geotextiles are laid between clay-crushed stone boundary. The time dependent deformations are measured utilizing the LED indicating lamp matrix inserted in the crushed stones and the dial gages put on top of the clay layer where the crushed stones are not laid. The measurements are carried out for 15days which is approximately equivalent to the 50% consolidation level. From the experiments, it is found that the geotextiles are more effective in horizontal displacement reduction than in vertical displacement reduction, especially when the geotextiles are pretensioned before embankments. It is also found that the time dependent settlement behavior is almost identical whether geotextiles are applied or not, and that the vertical displacements when geotextiles are employed are linearly decreased with increasing tensile stresses developed in the geotextiles.

Bulk 용접공정에서 분말 용가재의 성분에 따라 만들어진 하드페이싱부의 화학분석, 미세조직 및 경도

김광수,이규도 순천향대학교 부설 산업기술연구소 2001 순천향 산업기술연구소논문집 Vol.7 No.1

This research was carried out to synthesize the powder type filler materials for bulk welding process. The powder type filler materials were synthesized with raw materials such as high/low carbon ferro-Cr and also high/low carbon ferro-Mn powders. Three types of powder type filler materials were prepared. And also, three different combinations of wire and filler powders were selected such as 1.5:1, 1.9:1 and 2.3:1 for the ratio of filler powder:wire. The evaluations were performed by chemical analysis, microstructural investigation and microhardness measurements. The results indicated that the characteistics of synthesized powder displayed same as that of the commercial powder. The microhardness value was higher than that of commercial powder. Further, the M_(7)C_(3) carbide providing higher hardness for hardfacing was dominant in the synthesized powder. The best combination of the powder and wire was the ratio 2.3 : 1.