태양열 건조 시스템에 관한 실험적 연구(Ⅱ) - 벼의 태양열 건조 특성 -

고학균(Koh Hak-Kyun),김용현(Kim Yong-Hyeon),송대빈(Song Dae-Bin),박재복(Park Jae-Bok) 한국태양에너지학회 1991 한국태양에너지학회 논문집 Vol.11 No.3

곡물 bin을 이용한 벼의 건조실험을 수행하여 상온통풍건조 시스템과 태양열 건조 시스템의 건조 특성을 비교하여 분석하였다. 태양열 건조의 시뮬레이션 모형에 대한 컴퓨터 프로그램을 개발하였으며 시뮬레이션 모형에 의한 함수율의 예측치는 실측치와 전체적으로 일치하였다.<br/> 또한, inverter를 사용하여 벼의 건조 상태에 따라 송풍량을 적절하게 제어하는 송풍량 제어 시스템을 개발하였으며, 개발된 송풍량 제어 시스템을 통하여 에너지 절약 효과를 얻을 수 있었다. In-bin grain drying experiments were performed to investigate the drying characteristics between natural air and solar heated-air drying system of rough rice. A computer simulation model for solar drying system of rough rice resulted in a good agreement between the experimental and predicted moisture content.<br/> In order to save the electric energy consumption of fan, airflow rates control system using inverter was developed and resulted in the effect of energy saving.

기화혼합장치를 사용한 메탄올 스파크 점화기관의 기화 특성 및 출력성능에 관한 연구

이성열,한성빈,문성수 成均館大學校 科學技術硏究所 1989 論文集 Vol.40 No.1

Methanol have been considered for use as automotive fuels since two times energy crisis in the 1970's, but it have a defect that the great latent heat of vaporization. So the authors made the fuel vapoizing device in order to heat the mixture and eliminate the fuel film flow. Therefore this paper presents a study on the characteristics of vaporization and engine power output using the fuel vaporizing device according to the change of heating water temperature.

색상 측정 기기를 이용한 복합레진 적층 수복과 단일 수복의 색상 비교 분석

송영상,김자현,이빈나,장지현,장훈상,황윤찬,오원만,황인남 大韓齒科保存學會 2012 Restorative Dentistry & Endodontics Vol.37 No.2

Objectives: This study analyzed the difference in color caused by different thickness in enamel layer of composite resins when applied with single and layering placement technique, and evaluated if the results agreed with the shade guide from the manufacturers to verify reliability of the color matching process of the manufacturers. Materials and Methods: For single composite resin samples, 6 mm diameter and 4 mm thickness cylindrical samples were fabricated using Ceram-X mono (DENTSPLY DeTrey) and CIE L*a*b* values were measured with spectrophotometer. Same process was done for layering compositie resin samples, making 3 dentinal shade samples, 4 mm thickness, for each shade using Ceram-X duo (DENTSPLY DeTrey) and enamel shade resins were layered in 2 mm thickness and CIE L*a*b* values were measured. These samples were ground to 0.2 mm thickness each time, and CIE L*a*b* values were measured to 1 mm thickness of enamel shade resin. Results: Color difference (△E*) between single and layering composite resin was 1.37 minimum and 10.53 maximum when layering thicknesses were between 1 mm and 2 mm and 6 out of 10 same shade groups suggested by manufacturer showed remarkable color difference at anythickness (△E* > 3.3). Conclusion: When using Ceram-X mono and duo for composite resin restoration, following the manufacturer's instructions for chossing the shade is not appropriate, and more accurate information for Ceram-X duo is needed on the variation and expression of the shades depending on the thickness of the enamel. (Restor Dent Endod 2012;37(2):84-89)

가변 실린더 수에 의한 자동차 연료 소비율의 개선

한성빈,이성열 成均館大學校 科學技術硏究所 1986 論文集 Vol.37 No.2

This paper presents an effective way of improving fuel consumption for a variable displacement engine. The improvement of fuel consumption can be accomplished by means of deactivating inlet and exhaust valves, reducing the number of effective cylinders, which is four-cylinder gasoline engine that mounted on a domestic compact automobile. In case of having 2 effective cylinders, a maximum improvement of fuel consumption (about 30%) can be obtained at the running speed of 50km/h or less and under low load condition. And also at idle, improvement of fuel consumption is about 30%. Also it may be possible to reduce the speed of idling. In case that the number of effective cylinders is 3, the improvement of fuel consumption is below 10%, but the extent of operation is broadened.

장애인 태권도 선수의 스포츠 열정이 경기수행능력에 미치는 영향

송지빈(Ji Bin Song),고무송(Moo-Song Ko),송채훈(Chae-Hoon Song) 한국발육발달학회 2017 한국발육발달학회지 Vol.25 No.3

The objective of the study is to analyze the impact of disabled taekwondo players’ sports passion on their match performance ability. For the research, a total of 146 male and female disabled taekwondo players for competitions and stance matches who are registered to Korea Taekwondo Association for the Disabled in 2015 and 2016 was used for the final analysis. The data were analyzed through frequency analysis, EFA (Exploratory Factor Analysis), reliability coefficient, independent t-test, one-way ANOVA and multiple regression analysis, and the results are as follows: First, as a result of the analysis on the differences in sports passion according to disabled taekwondo players’ sociodemographic characteristics, sports passion in relation to both sports types and disability types showed statistical differences in obsessive passion. Also, sports passion according to award experience had statistical differences in obsessive passion. Second, as a result of the analysis on the differences in match performance ability according to disabled taekwondo players’ sociodemographic characteristics, match performance ability showed statistical differences in psychological maturity according to gender. Match performance ability in relation to match types showed statistical differences in match performance success, match performance maturity and psychological maturity, and that according to award experience in match performance success. Third, the analysis on the impact of disabled taekwondo players’ sports passion on match performance success and psychological maturity revealed that a sub-factor of sports passion, obsessive passion, had statistically significant influence. Also, disabled taekwondo players’ sports passion had impact on match performance maturity; sub-factors of sports passion including obsessive passion and harmonious passion showed statistically significant impact. Finally, as for the result of analysis on the impact of disabled taekwondo players’ sports confidence on psychological maturity, the predictive analysis on a sub-factor of match performance ability, psychological maturity, revealed that there was impact on physical and psychological preparedness, social support and proof of ability, while no influence on coaches’ leadership.

DYNAMIC CAVITY CONTROL IN A SHORT PULSE FREE-ELECTRON LASER OSCILLATOR

SONG,SU-BIN,HAHN,SANG JUNE 中央大學校 基礎科學硏究所 1999 基礎科學硏究所 論文集 Vol.13 No.-

It is well known that the cavity detuning length is one of the most important parameters in free-electron laser oscillators, especially for operating with short electron pulses. Using one dimensional Maxwell-Lorentz coupled particle simulation, we demonstrate the control of short-pulse FEL oscillator characteristics by changing dynamically the effective cavity detuning length. The results are in good agreement with previous experiment by FELIX group, and suggest the way to control and improve FEL dynamic characteristics more effectively.

Lysine 2,3-aminomutase : Purification and Characterization

Song, Kyung Bin 한국생화학분자생물학회 1991 생화학분자생물학회 소식 Vol.11 No.2

Effect of Gamma-Irradiation on the Molecular Properties of Blood Plasma Proteins

Song, Kyung-Bin,Lee, Seunghwan,Lee, Seunghyun The Korean Society of Food Science and Nutrition 2002 Preventive Nutrition and Food Science Vol.7 No.2

Blood products from slaughterhouses that are not hygienically prepared for disposal or food consumption pose a human health hazard. Gamma irradiation is an effective method for sterilization of blood products, but may introduce changes in the molecular characteristics of proteins. This study evaluated the effects of irradiation on animal plasma proteins. Bovine and porcine blood was obtained from a slaughterhouse and the plasma proteins purified and lyophilized. The secondary structure and molecular weight distribution of the plasma protein solutions and powders were examined after ${\gamma}$-irradiation at 1, 5, 7 and 10 kGy. Gamma-irradiation affected the molecular properties of the protein solutions, but not the protein powders. Circular dichroism and sodium dodecyl sulfate-polyacrylamide gel electrophoresis studies showed that increased doses of ${\gamma}$-irradiation decrease the ordered structure of plasma proteins in solution, and cause initial fragmentation of the polypeptide chains and subsequent aggregation.

QCSE Tuning Characteristics of Quaternary InGaAsP MQW

Song, Ju Bin 경희대학교 자연과학종합연구원 2003 자연과학논문집 Vol.9 No.2

This paper describes quantum confined Stark effect(QCSE) tuning characteristics of InGaAsP multiple quantum well(MQW). The result of QCSE static tuning was 125%/V and the speed of wavelength conversion, which is one of dynamic tuning characteristics, due to QCSE was faster than 1 nS. The results show a possible 1550nm multiple channel source using quaternary/quaternary MQW InGaAsP/InP QCSE tuning for dense wavelength division multiplex(DWDM) systems and 140 GHz channel spacing and 32 nm channel selection bandwidth

Measurement of Absorption Coefficient for Quantum Confined Stark Effect In GaAsP/In P MQW Na Refractive Index Change

Song, Ju-Bin,Killey, R. Optical Society of Korea 2001 Current Optics and Photonics Vol.5 No.4

In this paper, we report measurement of absorption coefficient for various InGaAs MQW QCSE device structures. The absorption spectra over a range of QCSE were obtained from measured photocurrent spectra. The refractive index changes with applied electric field were calculated from the absorption spectra.