1-MCP처리가 '신고'배의 저장에 미치는 영향

한현희,강충길,이정명 경희대학교식량자원개발연구소 2005 硏究論文集 Vol.24 No.-

1-MCP 처리가 '신고' 배품종의 상온저장시의 품질에 미치는 영향을 알아보고자 실험을 실시하였다. 수확된 '신고' 배를 1-MCP 1 ppm의 농도로 수확당일, 수확후 1일, 수확후 2일에 각각 처리하고 이후에는 20±2℃의 실온에서 포장 저장하면서 품질관현 요인을 검정하였다. 초기 조사일의 과중에 대한 중간 조사일의 과중감소율에서는 5주차에 수확 1일후 1-MCP 처리구가 가장 감소율이 적었다. 당도에서는 처리간에 차이가 없었다. 경도와 부패과에서는 처리 5주차에서 1-MCP 처리구들이 무처리에 비해 뚜렷하게 경도와 부패과가 적게 발생하였다. 산도에서는 실험 5주차에 무처리가 다른 1-MCP 처리구보다 높았다. 결론적으로 수확직후의 1-MCP처리는 '신고' 배의 저장기간 연장에 효과적이었다. This study was carried out to find out the effects of 1-MCP treatment on the fruit quality of 'Niitaka' pear under room temperature storage conditions. With 1-MCP treatment one day after harvest, the lowest percentage of decrease in the fruit fresh weight was obtained at 5 weeks after the treatment. Soluble solids contents of MCP-treated fruit did not show significant differences among treatments. In comparison with the control, all of 1-MCP treatments showed a slow decrease in fruit firmness and low percentages in rotten fruit rate at 5 weeks after the treatment. At 5 weeks after the treatment, the fruit juice acidity of the control was higher than those from other 1-MCP treatments.

CAS 세멘트 제조에 관한 기초연구

황용길,윤한중 東亞大學校 1998 東亞論叢 Vol.35 No.-

The experimental results of synthesized expansive sttringites with aqueous solution of aluminumsulphate and milk of lime are as follows. 1) The synthesized reactions are progressed toward exothermic reaction rapidly. 2) Compared to crystallizing H₂O content of the synthesized 3Cao·Al₂O₃·3CaSO₄·xH₂O, diluted aqueous solutions is less than conc aqueous solution. 3) The crystal forms of synthetic ettringite are observed to spherical and column forms by SEM. 4) By the results of XRD analysis, ettringites contained below 6 mols CaO appeared to CaSO₄ but in the 7 and 8 mols CaO contained ettringites obtained CaSO₄and free CaO. 5) The expansibility and water absorption rate of 6 and 7 mols CaO contained ettringites are excellent.

통영시와 양산시의 건기시 합류식 하수관거 월류수(CSOs)에 관한 비교연구

김한석,정병길,성낙창 東亞大學校建設技術硏究所 2004 硏究論文集 Vol.28 No.1

Two analysis sites were set up each for this study in the city of Tongyoung, which has the characteristics of a coastal area, and in the city of Yangsan, which has the characteristics of an inland area, water quantity, and water quality and analysis of initial rainfall pollution level on Combined Sewer Overflows(CSOs) were performed. Based on the findings of these analyses. comparing and predicting the characteristics of effluent considering rainfall intensity using SWMM modeling is the purpose of this study. Following the compilation and analysis of data. the selection of analysis sites for preliminary samples, and the confirmation and examination of the sites for the field study, two sites for the analysis of CSOs were chosen each in the city of Tongyoung, a coastal area, and in the city of Yangsan, an inland area. The analysis of water quantity on CSOs was conducted with Flo-Tote(Ⅱ). For analysis parameters. BOD_(5), COD_(Cr), TSS, T-P, and T-N were analyzed 12 times a day. The results of SWMM modeling based on the amount of rainfall of Tongyoung and Yangsan revealed a little difference between measured value and predicted values, but the difference was modest in terms of volume. However, continuous studies on major coefficients and variables considering the amount of rainfall and local characteristics are required for more exact conclusion.

궤도 차량의 기동성능 예측 프로그램 개발

서정길,김종수,김용태,이경식,한성현 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

In this paper, we developed a Windows XP version off-line programming system which can simulate a track vehicle model in 3D graphics space. The track vehicle was adopted as an objective model. The interface between users and the off-line program system in the Windows XP's graphic user interface environment was also studied. The developing language is Microsoft Visual C++. Graphic libraries, OpenGL, by Silicon Graphics, Inc. were utilized for 3D Graphics.

DNA 증거의 집단유전학적 분석을 위한 SAS시스템

이효정,이혜승,한길로,이재원,황적준 大韓法醫學會 2000 대한법의학회지 Vol.24 No.1

DNA analysis has become one of the most powerful tools in forensic inference for human identification and is now used worldwide. It is used to be statistical technique for the individual identification of a civil and criminal action. The purpose of this article is computerization of the statistical technique for the population study and DNA evidence analysis. The system using SAS/AF and SAS/SCL is the graphic user interface and the correspondence of the changed experimental circumstances

모바일 로봇의 견실제어를 위한 제네틱 알고리즘 개발

김홍래,배길호,정경규,한성현 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

This paper proposed trajectory tracking control of mobile robot. Trajectory tracking control scheme are real coding genetic-algorithm and back-propergation algorithm. Control scheme ability experience proposed simulation. Stable tracking control problem of mobile robots have been studied in recent years. These studies have guaranteed stability of controller, but the performance of transient state has not been guaranteed. In some situations, constant gain controller shows overshoots and oscillations. So we introduce better control scheme using Real coding Genetic Algorithm(RCGA) and neural network. Using RCGA, we can find proper gains in several situations and these gains are generalized by neural network. The generalization power of neural network will give proper gain in untrained situation. Performance of proposed controller will verify numerical simulations and the results show better performance than constant gain controller.

비강비호즈킨 림프종의 전산화단층촬영 소견 : CT Features

노태연,백호길,원종부,박성호,박오봉,백승국,신미정,김봉기,최한용 침례병원 1998 浸禮病院學術誌 Vol.14 No.-

자동차용 시로코팬의 유동특성에 관한 연구

이행남,박길문,이덕구,정한별,김건일,설재림 朝鮮大學校 機械技術硏究所 2005 機械技術硏究 Vol.8 No.1

The sirocco fan is used to get low noise, and it has been applied to a lot of industry field like the heat engine, the fluid instrument power plant, the food industry, environment industry etc... because there are not problems even it is mixed with a any kind of liquid, gas, and solid. The flow characteristics in sirocco fan are investigated by PIV. The experiment using PIV measurement for Test section's flow characteristics acquired velocity distribution, Condition : when sirocco fan in automobile air controller maximum 1450RPM, and a revolution is a variation (l)950RPM, (2)l100RPM, (3) 1250RPM. The agreement a experiment shows the validity of this study and the results of this study would be useful to the engineers who design for the flow systems

동일한 시료에 대한 국내 기관간의 STR 분석결과 비교 : STR 유전자좌 분석법의 표준화 설정을 위하여

박종태,신경진,양윤석,우광만,이숭덕,이승환,이정빈,정연보,조승희,한길로,한면수,홍승범 大韓法醫學會 2001 대한법의학회지 Vol.25 No.1

This paper described a collaborative exercise intended to see what kinds of short tandem repeat (STR) loci are used in different DNA typing laboratories in Korea and to compare their results for the demonstration whether uniformity of DNA profiling results from different laboratory could be achieved in Korea Laboratories were asked to test five tissue DNAs using methods routinely used in each laboratory and to report the results to the coordinating laboratory. The exercise demonstrated that each laboratory was using different STR loci for the typing with different STR numbers,2 VNTRS,36 STRs and amelogenin in total, and the direct comparison of the results from all the laboratory for the 18 loci could not be done as only one laboratory submitted typing results. Among 21 loci for which several laboratories submitted typing results, results for 14 loci were the same and results for the other 7 loci were different depending on the participating laboratory. D1S80, F13A01, D16S539, D21S11, D18S51, D3S1744 were the loci with different typing results. Even in the cases where commercial kits were used, the results were not the same depending on the machines used, that is the capillary electrophoresis or the gel based electrophoresis. The reason for the different results, points about the standardization of the methods arid the profiling data were described.

Effects of HA released calcium ion on osteoblast differentiation

Jung, Gil-Yong,Park, Yoon-Jeong,Han, Jung-Suk Springer-Verlag 2010 Journal of materials science, Materials in medicin Vol.21 No.5