나사용 한계게이지의 CAD화에 관한 연구

이동주,이광길 한국공작기계학회 1998 한국생산제조학회지 Vol.7 No.5

The CAD system which enables to design and draw the screw thread gauges was developed and constructed. This system was proposed based on Visual C++ Version 5.0. Even beginners can get drawings as well as concerned data for the manufacturing of screw thread limit gauges by selecting the input data. This system was constructed from relevant standards and regulations and was developed based on the Korean Standard and referred to ISO, JIS, handbooks and textbooks. This system shall provide more powerful and user friendly tool for design and drawing for screw thread gauges such as metric fine and coarse threads, unified fine and threads, parallel and taper pipe threads. The results of this system are proved to be in good agreement with concerned standards and regulations.

Bowen양 구진증의 조직학적 소견과 랑게르한스 세포수의 변화에 관한 연구

이광길,최순임 대한병리학회 1990 Journal of Pathology and Translational Medicine Vol.24 No.3

웹 환경에서 중학교 체육교과 보조학습 시스템 개발 및 평가

이영길,김광백,노영욱 한국컴퓨터교육학회 2003 컴퓨터교육학회 논문지 Vol.6 No.3

정보통신기술을 학교 교육에 도입함으로써 전통적인 교육방법과 교육내용 등에 획기적인 변화가 일어나고 있다. 이러한 변화에 따라 제7차 교육과정에서는 모든 교과 수업의 10%이상을 ICT를 활용하여 수업하도록 유도하고 있다. 본 연구에서는 제7차 교육과정의 체육교과 수업에서 ICT를 효율적으로 활용하기 위한 방법을 찾고자 체육교과에 적합한 코스웨어 설계 기본 방향을 설정하였다. 그리고 중학교 육상 단거리 달리기, 전력 달리기 동작 등을 대상으로 웹, 플래시와 데이터베이스 등을 이용하여 원격학습 프로그램을 개발하고 중학생 4개 학급의 140명 학생들을 대상으로 수업한 후에 효율성을 평가하였다. 설문과 시험을 통한 평가 결과에 따르면 학생들은 ICT 활용교육은 수업내용의 이해에 효과적이고, 수업 집중이 잘되고, 학생들이 능동적으로 수업에 참여하는 것으로 나타났다. There are making epoch changes of a teaching method and educational contents as information communication technology(ICT) introduced to school education. The 7th curriculum induces that teaching hours should be assigned to education using ICT more than 10% of all classroom work hours. In this study. we established basic course of' courseware design for applying ICT to physical education effectively in the 7th curriculum. We developed distance-learning program for motion of short-distance race and the entire his power race in middle school using Web. Flash and Database. And w+e evaluated efficiency by students that are 4 classrooms(140 persons) after teaching using the WBI. According to results of questions and a test. the students expressed that education using ICT make understanding of instruction substance effectively, concentrating their attention on leaching and concerning in teaching actively.

규칙적인 신체활동이 청소년의 생활 스트레스에 미치는 영향

길태오,구광수,이강헌 창원대학교 체육과학연구소 2004 경남 체육연구 Vol.9 No.1

본 연구는 규칙적인 신체활동이 청소년의 생활 스트레스에 미치는 영향을 규명하여, 청소년의 생활 스트레스 관리에 규칙적인 신체활동의 긍정적인 효과를 인식시키려는 목적으로 실시하였다. 연구대상은 유층집락 무선표집방법(stratified cluster random sampling method)을 이용하여 운동참여 집단(중학생 120명, 고등학생 93명) 213명과 비참여 집단(중학생 139명, 고등학생 95명) 234명, 총 447명을 표집하였다. 청소년의 생활 스트레스를 측정하기 위한 검사지로는 최해림(1986)의 생활 스트레스 척도를 이용하였고, 생활 스트레스의 영역은 학교생활, 가정생활, 대인관계의 3가지 영역으로 구분하였다. 수집된 자료는 신체활동 참여여부와 학교급별로 평균과 표준편차를 산출한 후 도표화하고, 평균차 검증을 위하여 이원변량분석과 상호작용효과 검증을 실시하여 분석해 본 결과 다음과 같은 결론을 얻었다. 첫째, 규칙적으로 신체활동에 참여하는 학생들은 신체활동을 실시하지 않는 학생들보다 생활 스트레스의 전 영역(학교생활, 가정생활, 대인관계 스트레스)에서 더 긍정적인 반응을 나타내었다. 둘째, 규칙적으로 신체활동에 참여하지 않는 학생들의 경우 가정생활 스트레스는 중학생이 고등학생보다 더 높은 수준이었고, 반면에 대인관계 스트레스는 고등학생이 중학생보다 더 높은 수준이었다.

복숭아의 재배 및 저장기간 중 Procymidone, Chlorpyrifos 및 Cypermethrin의 잔류량 변화

이용재,고광용,원동준,길근환,이규승 한국환경농학회 2003 한국환경농학회지 Vol.22 No.3

복숭아의 생산단계에서 잔류허용 기준과 최종 소비단계에서의 잔류양상 평가자료로 활용하기 위하여 복숭아에서의 procymidone, chlorpyrifos 및 cypermethrin의 포장상태에서와 실온(20°C) 및 저온(4°C) 저장시 잔류양상을 알아보았다. Procymidone의 포장상태에서의 반감기는 표준량 3.1, 배량 3.4일로 나타났고, chlorpyrifos는 포장상태에서 포준량 7.2, 배량 5.8일로 나타났으며, cypermethrin은 표준 10.1, 배량 14.4일로 나타났다. 약제 살포 후 초기 부착량이 MRL 이하로 내려갈 때까지의 시간을 계산해 본 결과 배량으로 살포 할 경우 procymidone과 chlorpyrifos는 안전사용기준 보다 시간이 오래 걸렸지만, 표준량으로 사용할 경우 별다른 문제가 없는 것으로 나타났다. 저장기간 중의 procymidone, chlorpyrifos, cypermethrin의 반감일수는 20°C에서 4.6, 10.2, 12.9일 이며, 4°C에서는 16.1, 14.3, 13.1일로 저온에서의 반감기가 실온에서보다 더 긴 것을 알 수 있었다. 한편 세척방법에 의한 잔류농약의 제거율은 수돗물에서는 최고 procymidone 82.9%, chlorpyrifos 27.0%, cypermethrin 24.0%로 나타났고, 세제를 사용 할 경우 procymidone 88.8%, chlorpyrifos 59.0%, cypermethrin 59.4%의 제거율을 보였다. The residue patterns of procymidone, chlorpyrifos and cypermethrin in peaches were examined. The pesticides were sprayed at 15 days before harvest and then were determined the residue at 0, 1, 2, 3, 5, 7, 10 and 15 days after pesticide application and calculated their DT_(50). Also, the degradation patterns at 4℃ and 20℃ during storage period were compared. Biological half-lives of procymidone, chlorpyrifos and cypermethrin in peaches during the cultivation period were 3.1, 7.2 and 10.4 days, respectively. The biological half-life of procymidone was shorter than the others. During the storage period, half-lives of procymidone, chlorpyrifos and cypermethrin were 16.0, 14.3 and 13.1 days at 4 C and 4.6, 10.2 and 12.9 days at 20℃, resp ectively. The degradation rates of these three pesticides in storage period were slower than them in cultivation period. Removal rates were 22.2--82.9% by tap water, and 12.5∼88.8% by detergent solution.

ISI 프로토콜에서의 인증에 관한 연구

최길림,이재동,정광민 慶南專門大學 2000 論文集 Vol.28 No.1

원형관로내 층류 맥동유동의 속도와 압력 분포에 관한 연구

박길문,유영태,위광환,이충주,정지철 조선대학교 생산기술연구소 1996 生産技術硏究 Vol.18 No.2

In this study basic equations for the pulsatile laminar flow in a circular rigid pipe containing a slightly compressible fluid are derived and analytical solutions for the distributions of wave propagation factor K, cross-sectional mean velocity u_(m) and pressure P are schematically developed and confirmed experimentally. The pulsatile flow with 0 ≤ f ≤ 48Hz and 0 ≤ Re ≤ 2500 generated by summing the oscillatory flow made by ball valve into steady one. The wave form of pulsatile flow is described as a longitudinal wave and particle velocities measured experimentally are group velocities of the wave packet which are always smaller than phase velocities which are approximate to the sonic velocity C when the radial dispersion and wall friction are negligible. Therefore wave number is approximated to k = ω/c for high angular velocity region. The axial pressures and centerline velocities were measured by strain-gage type pressure transducers and Pito-static tubes, respectively. The cross-sectional mean velocities calculated from centerline velocities with the parabolic distributions of the laminar flow and confirmed by using the ultrasonic flowmeter. We knew that axial distributions of oscillatory velocity and pressure coincide with thoeretical and depend on the Reynolds number and angular velocity.

GO에 의해 유도된 培養 脊髓感覺神經細胞 독성에 대한 鎭肝熄風湯의 방어효과

박광수,이호승,김인수,강길성,김인규,김인섭,류도곤 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

To evaluate the effect of Jingansikpungtang water extract on cultured mouse spinal sensory neuron which was inhibited by glucose oxidase(GO)-induced cytotoxicity, NR assay and TBARS assay for lipid peroxidation were carried out after the cultured mouse spinal sensory neuron were pre-incubated with various concentrations of Jingansikpungtang water extract for 3 hours prior to exposure of GO. GO, a oxygen radical, decreased the survival rate of the cultured mouse spinal sensory neuron cells on NR assay. Jingansikpungtang water extract have efficacy of decreasing lipid peroxidation increasing by GO in cultured mouse spinal sensory neuron. From above the results, it is concluded that Jingansikpungtang has marked efficacy as a treatment for the damages caused in the GO-mediated oxidative process.

韓國寺刹의 空間構造와 信仰形態에 關한 硏究

최창길,신상화,이용대,이광명 대구대학교 과학기술연구소 2000 科學技術硏究 Vol.7 No.2

This research takes up YONG-YOUN(龍淵) temple and NAM-JI-JOUNG(南地藏) temple which makes clear the space structure and the belief form of those Buddhist temples. The above-mention temples have been already investigate in other research's. However Now day, ne temples are a lot of changes so it is necessary to clarify the current situation Moreover Each Buddhist temples was not investigated detaily. So this research's aim is current temple's situation investigation and each temple's detailed reserch 1 ) The construction of all temples goes back even to the Silla Dynasty . However, the arrangement structure of then Buddhist temple was completion of the arrangement structure with the courtyard clearly now in a Chosun Dynasty. Especially, the construction time of the grand gate which the component of such an arrangement structure to be assumed the 17th century of which the middle of a Chosun Dynasty. 2) Moreover, it is a building where it was built to be paid attention most in the space structure of the investigated Buddhist temple for folk beliefs. Belief objects is deified to these buildings are 山神(SAN SIN) , 獨聖(DOK SUNG), and 七星(CHIL SUNG). Especially being paid attention is 山神(SANSIN) belief. There was a belief to 山神(SAN SIN) from ancient times . However, coming to be deified in the temple is from a furnace in the 17th century. By the way, it was able to be confirmed to have come to be built in the temple which had been investigated by this research in the 20th century in the latter half of the 19th century.

유산망아지에서 말herpesvirus 의 면역조직학적 및 immunogold 기법에 의한 전자현미경적 진단

신태균,이두식,진재광,임윤규,조길재 濟州大學校 農科大學 動物科學硏究所 1997 動物科學論叢 Vol.12 No.1

To investgate the causative Virus in aborbon of horse in Cheju, we examined the spleen of affected foal by immunohtochemistq and immunogold electron microscopy using EHV - specific antisera. Immunohistochemical staining revealed that a large number of EHV immunoreadive cells were deteded in the red pulp as well as in the sinudoidal cells in the affected spleen. By the immunogold electron microxopy(EM) of crude preparation of EHV culture, electron dense gold paricles were labelled along the envelope of amorphous virus parhcles with vanng sizes of 50-200nm. We suppose that immunohistochemical method is good for the diagnosis of tissues in EHV infections, and immunogold EM is recommended for the study of virus dia gnosis of fluid specimen as well as the ultrastustural study.