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吸氣管 內에 空氣噴射가 터보過給디젤機關의 過渡性能改善에 미치는 影響
용호택,전봉준,최낙정 서울産業大學校 産業大學院 1995 大學院論文集 Vol.3 No.-
This study investigates the characteristics of transient response in a turbocharged diesel engine by using the computer simulation with experiments. Experimental study on the engine system is carried out to examine the validity of numerical analysis, and the predicted results are compared with experimental data at various conditions. Further, experiment for improving the low speed torque and acceleration performance is also performed by means of injecting air in the inlet manifold. The effects of air injection on the response performance are investigated at various conditions such as injection pressure, injection period, accelerating time, accelerating rate, load and engine speed.
JEON, YOUNG-JOO,BANG, WOONG,SHIN, JAE-CHEON,PARK, SEON-MIN,CHO, JUNG-JAE,CHOI, YUNG HYUN,SEO, KANG SEOK,CHOI, NAG-JIN,SHIM, JUNG-HYUN,CHAE, JUNG-IL Spandidos Publications 2015 International journal of oncology Vol.46 No.6
<P>β-lapachone (β-lap) is a naturally occurring quinone obtained from the bark of lapacho tree (Tabebuia avellanedae) with anti-proliferative properties against various cancers. The present study investigated the cell proliferation and apoptosis effect of β-lap on two oral squamous cell carcinoma lines (OSCCs). We carried out a series of 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl-2H-tetrazolium (MTS) assays, 4',6-diamidino-2-phenylindole (DAPI) staining, cell cycle analysis, and western blot analysis to characterize β-lap and its underlying signaling pathway. We demonstrated that β-lap-treated cells significantly reduced cell proliferation but increased DNA condensation and increased sub-G1 population in OSCCs. Particularly, β-lap suppresses activation of transcription factor specificity protein 1 (Sp1) followed by apoptosis in a concentration-dependent manner in OSCCs. Furthermore, β-lap modulated protein expression levels of cell cycle regulatory proteins and apoptosis-related proteins that are known as Sp1 target genes, resulting in apoptosis. Our results collectively indicated that β-lap was able to modulate Sp1 transactivation and induce apoptosis through the regulation of cell cycle and apoptosis-related proteins. Therefore, β-lap may be used in cancer prevention and therapies to improve clinical outcome as an anticancer drug candidate.</P>
Jung-Pil Suh,Sang-Nag Ahn,Young-Chan Cho,Kyong-Ho Kang,Im-Soo Choi,Yeon-Gyu Kim,Hak-Soo Suh,Hung-Goo Hwang 한국육종학회 2005 한국육종학회지 Vol.37 No.5
An interspecific BC3F2 population (Milyang 23/O. glaberrima/3*Milyang 23) consisting of 141 lines was evaluated for8 traits associated with yield. Oryza glaberrima (IRGC #103544) was phenotypically inferior to all of the traits examined in thisicle and grain yield. A genetic linkage map generated for this population consisted of 124 SSR markers with an average intervallength of 13.1 cM. The percentage of O. glaberrima genome, which was calculated on the number of the exotic gene introgres-sions contained in the 141 BC3F2 lines, ranged from 3.9 to 25.4% with a mean of 12.8%. Of the 37 QTLs associated with yield andyield components, 24 alleles from O. glaberrima were favorable. However, eight QTLs were significantly associated with yieldand five alleles of O. glaberrimafrom 1.5 to 2.2 tons/ha. Exploitation of the genetic potential of exotic species using molecular markers might provide a new oppor-tunity to improve yield and quantitative traits in rice breeding program.
Identification of QTLs for Cold Tolerance at Seedling Stage in Korean Weedy Rice (Oryza sativa L.)
Jung Pil Suh,Sang Nag Ahn,Im Soo Choi,Young Chan Cho,Hung Goo Hwang,Hak Soo Suh 한국육종학회 2003 한국육종학회지 Vol.35 No.2
Molecular markers were used to map and characterize quantitative trait loci (QTLs) for traits related to cold tolerance in an intrasubspecif ic backcross population of r ice. The parents of the cross were a cold susceptible Tongil-type cultivar 'Milyang23
SSR Analysis of Heterosis for Cold Tolerance in Rice
Jung Pil Suh,Young Chan Cho,Eung Gi Jeong,Im Soo Choi,Yong Hwan Choi,Man Kee Baek,Jong Doo Yea,Sang Nag Ahn,Yeon Gyu Kim,Hung Goo Hwang 한국육종학회 2004 한국육종학회지 Vol.36 No.3
The genetic basis underlying heterosis for agronomic traits of rice under cold water irrigated field condition was investigated in the 143 RILs and 286 BC1F1 lines from the cross between a cold-susceptible variety, Milyang23 and a co