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주요 스프레이 국화 품종의 형태적 특성과 변이계수, 유전율 및 유전자 전이율
심성임(Sung-Im Shim),임기병(Ki-Byung Lim),김창길(Chang-Kil Kim),정미영(Mi-Young Chung),김경민(Kyung-Min Kim),정재동(Jae-Dong Chung) 한국원예학회 2016 원예과학기술지 Vol.34 No.2
The statistical analyses of coefficient of variation, heritability, and genetic advance were carried out to identify differences in morphological characteristics, such as the stem and inflorescence length, of 10 major commercial cultivars of spray chrysanthemum (Chrysanthemum morifolium). For morphological characteristics, stem lengths ranged from 46.4 ㎝ to 54.9 ㎝, the maximum diameter of stem was 5.6 to 8.5 ㎜, the hardness of the stem was 0.17 to 0.70 ㎏·m<SUP>-2</SUP>, the fresh weight of stem was 7.5 to 17.5 g, the dry weight of the stem was 1.6 to 3.3 g, the ratio of dry weight/fresh weight of stem was 15.9% to 23.1%. Also, the number of leaves on the stem was 8.4 to 12.2, the stem leaf area was 17.8 to 37.8 ㎡, the fresh weight stem leaves was 5.3 to 18.6 g, the dry weight was 0.5 to 1.4 g and the ratio of dry weight /fresh weight of stem leaves was 7.6% to 11.5%. The inflorescence length ranged from 10.1 to 18.6 ㎝, the fresh weight of inflorescence was 7.3 to 26.7 g, the dry weight of inflorescence was 1.2 to 2.8 g, the ratio of dry weight /fresh weight of inflorescence was 10.4% to 17.1%. For flower, the diameter of the flower center was 8.2 to 13.3 ㎜, the petal width was 5.7 to 14.0 ㎜, the petal length was 12.9 to 33.1㎜, and the petal thickness was 157.8 to 354.4㎛. The mean values of each character in each cultivar were very different, and DMRT and LSD values based on morphological characteristics among 10 cultivars were highly significant. For variability and genetic parameters, the lowest CV (coefficient of variation), PCV (phenotypic coefficient of variation), and GCV (genotypic coefficient of variation) were 4.79% to 5.15% in stem length, and the highest variations were 62.97% to 65.21% in leaf area. ECV (error or environmental coefficient of variation) was the lowest for leaf area (1.71%) and it was the highest for leaf dry weight (19.30%). Heritability also significantly differed among the characteristics, ranging from 68.69% to 99.67%, the lowest value was shown in ratio of dry weight /fresh weight of stem and the highest value was for leaf area of stem. The value for genetic advance was the lowest in hardness of stem at 0.30 and the highest in leaf thickness at 156.65. The lowest genetic advance as percentage of mean of stem hardness was 9.17%, while the highest percentage of stem length was 134.27%. Thus the characters which had the highest values indicated above show the influence of additive gene action and may provide useful resources for selection programs for agronomic improvement.
전이암으로 오인된 다원성(multifocal) 결핵 1예
조인정 ( In Jeong Cho ),임소연 ( So Yeon Im ),천은미 ( Eun Mi Chun ),류연주 ( Yon Ju Ryu ),이진화 ( Jin Hwa Lee ),심윤수 ( Yun Su Sim ),장중현 ( Jung Hyun Jang ),심성신 ( Sung Shin Shim ),배정호 ( Jung Ho Bae ) 대한결핵 및 호흡기학회 2007 Tuberculosis and Respiratory Diseases Vol.63 No.2
저자들은 FDG-PET과 전산화 단층 촬영에서 인두, 복부, 흉부에 악성 종양이 의심되는 소견이 보여 점막 표피모양 암종으로 오인된 복강내 결핵, 인두 결핵, 기관지 결핵이 동반된 환자를 조직 검사를 통하여 결핵으로 진단하였고, 이 환자에게 항 결핵제 투여의 치료를 통하여 추적 전산화 단층 촬영에서 호전 경과를 보인 1예를 경험하였기에 이를 보고하는 바이다. Tuberculosis remains as a major public health problem worldwide. In addition to classic pulmonary tuberculosis, tuberculosis may sometimes present atypically. In the case of atypical tuberculosis, the unusual sites and properties that mimic other diseases can lead to a misdiagnosis and therapeutic delay. Abdominal and pharyngeal tuberculosis are uncommon extrapulmonary manifestations of tuberculosis. To the best of our knowledge, a combination of abdominal and pharyngeal tuberculosis with endobronchial tuberculosis has not been reported. We report a case of concurrent abdominal and pharyngeal tuberculosis in a patient with chronic endobronchial tuberculosis mimicking a metastatic malignancy on computed tomography and FDG-PET. (Tuberc Respir Dis 2007; 63: 173-177)
Mg 첨가에 따른 A356 합금의 열처리 및 기계적 특성 변화
조재찬 ( Jae-chan Jo ),김광삼 ( Kwang-sam Kim ),임인택 ( In-taek Im ),김대환 ( Dae-hwan Kim ),심성용 ( Sung-yong Shim ),임수근 ( Su-gun Lim ) 한국주조공학회 2016 한국주조공학회지 Vol.36 No.6
The effects of Mg addition on heat treatment and mechanical properties of A356 alloy were investigated. With increased amounts of Mg addition to A356 alloy, the grain size decreased and eutectic Si was refined. And, this process can improve the mechanical properties. Solid solution heat treatment causes the spheroidizing of eutectic Si. In this study, although eutectic Si was refined with Mg addition, solid solution time increased from 2 hours to 6 hours with Mg addition, and aging time also increased, from 4 hours to 8 hours. After heat treatment, Mg2Si remained in a formation of Chinese script. And, Chinese script Mg2Si formed with Mg addition caused a reduction of the elongation of the alloys according to the stress concentration.