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Lee, Dong-Mok,Lee, Ki-Ho,Choi, Jin Ho,Hyun, Jin Hee,Lee, Eun Ju,Bajracharya, Prati,Lee, Yong Seok,Chang, Jongsoo,Chung, Chung Soo,Choi, Inho Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.8
In an attempt to understand the biochemical mechanism for the synthesis of the anabolic steroid, 19-nortestosterone, produced by prepubertal boar testes and its physiological role, normalized complementary DNA (cDNA) from boar testes was generated. DNA sequencing of 2,016 randomly selected clones yielded 794,116 base pairs of high quality nucleotide sequence. Computer-assisted assembly of the nucleotide sequence of each clone resulted in 423 contigs and 403 singletons including several genes for steroidogenic enzymes and molecules related to steroid metabolism. Analysis of gene expression pattern by use of the presently-fabricated cDNA microarray identified a number of genes that were differentially expressed during the postnatal development period in boar testes. Two genes of unknown function were identified to be highly expressed in the testis of 2-weeks-old neonatal boar. In addition, the sequencing of open reading frames of these genes revealed their homology with human alpha hemoglobin and Homo sapiens hypothetical LOC643669, transcript variant 1. Moreover, the transcripts of these genes were also detected in porcine muscle and adipocytes, in addition to Leydig cells of pigs.
NOx 및 SOOT 저감분석을 위한 역전파 신경망을 이용한 디젤 엔진 배기시스템의 근사 모델링
이승주(Seung Joo Lee),박재인(Jae In Park),이수홍(Soo Hong Lee),이준규(Joon Kyu Lee),이종수(Jongsoo Lee) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Recently, the research for reducing harmful automotive emissions have been recognized seriously. Particularly, the improvement for reducing harmful automotive emissions depends on diesel engine combustion characteristics such as EGR rate, Swirl ratio, Start of Injection and etc. In this paper, the examination and simulation data are extracted from the diesel engine combustion characteristics. Based on these results, the amount of emissions such as NOx, SOOT, and etc are anticipated by performing approximations on back-progagation neural networks which have benefit nonlinear characteristic prediction. Consequently, the possibility of predicted approximation based on the characteristic condition of diesel engine combustion is examined.