二面交配分析에 依한 短日下에서의 水稻出穗期 遺傳에 關한 硏究

曹在星,李仁燮 충남대학교 농업과학연구소 1978 農業技術硏究報告 Vol.5 No.2

To information on the inheriance of heading date of rice under the short-day condition, the F_2 seeds obtained from all possible combinations of the diallel crosses between five leading rice varieties: Nongbaek, Tongil, Palgueng, Mangyeong and Gimmaze were grown under the short-day condition and natural condition. The days to heading were investigated and analysed for genetic components. The results obtained are summarized as follows. 1. Under the natural condition, the durations to heading of all combinations excluding Nongbaek x Palgueng and Nongbaek x Mangyeong were longer than those of their parents. mean. Whereas, under the short-day condition, the duration to heading of Mangyeong x Gimmaze combination was equal to that of their parents mean, and those of all other combinations were significantly shorter than those of their parents mean. 2. Under the natural condition, the non-allelic gene interactions were significant in days to heading, but under the short-day condition, the non-allelic gene interactions were not significant, and inheritance of days to heading revealed partial dominace in which additive effects were greater than dominant effects. 3. Tongil and Gimmaze were located on dominant zone under the natural day-length, and Nongbaek and Mangyeong were under the short-day condition. 4. Under the natual condition, dominant effects were greater than additive effects, and both heritabilities of the broad and the narrow senses were significantly low. Under the short-day condition, additive effects were significantly higher than dominant effects, and both heritabilities of the broad and the narrow senses were high.

저장용액의 온도에 따른 치주인대세포의 생존율

조재현,김성오,최형준,이제호,손흥규,최병재 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.1

외상성 손상 후 치아 탈구 시 치아를 저장하는 저장용액의 종류와 온도가 치주인대세포의 생존율에 어떠한 영향을 미치는지 연구하기 위하여 치주인대세포를 10% fetus bovine serum(FBD) 함유 α-minimal essential medium(α-MEM)에서 37℃ 5% CO_(2) 공기 혼합 배양기에서 배양하고 4.25, 37℃의 Hank's balanced sa1t solution(HBSS)과 α-MEM, 우유(S회사, P회사), tap water에 저장하고 60분이 지난 후 각 군에 대해 치주인대세포의 생존율을 측정하기 위하여 MTT assay를 시행하여 다음과 같은 결과를 얻었다. 1. 4℃ 저장용액의 치주인대세포의 생존율은 α-MEM과 P회사우유에서 가장 높았고 HBSS, S회사우유, tap water 순으로 낮았다. 2. 25℃ 저장용액의 치주인대세포의 생존율은 α-MEM에서 가장 높았고 P회사우유, HBSS, S회사우유, tap water 순으로 낮았다. 3. 37℃ 저장용액의 치주인대세포의 생존율은 α-MEM과 P회사우유, HDSS, S회사우유에서 높았고 tap water에서 가장 낮았다. 4. α-MEM의 치주인대세포의 생존율은 4℃에서 가장 높았고 25℃와 37℃ 순으로 낮았으며 HBSS에서는 4℃에서 높았고 25℃와 37℃에서 낮았다. 5. S회사와 P회사우유에서 치주인대세포의 생존율은 4℃와 25℃에서 높았고 37℃에서 낮았다. 이상의 결과를 종합해볼 때 외상으로 인해 치아가 탈구되었을 때 탈구된 치아의 저장용액으로 HBSS 용액이 추천되고 있으나 이 연구에서 4℃와 25℃ 우유에서 치주인대세포의 생존율이 높았으므로 사고 현장에서 쉽게 구할 수 있고 치주인대세포의 생활력 보존에도 유리한 낮은 온도의 우유에 탈구된 치아를 보존하는 방법도 좋을 것으로 생각된다. To compare the survival rate of periodontal ligament cells preserved in storage media with good availability at the time of an avulsion injury, periodontal ligament cells were incubated in α-MEM culture medium containing 10% FBS in condition of 37℃, 5% CO_(2). These cells were then cultured in HBSS, α-MEM, milk(S. co., P. co.) and tap water at the temperature of 4, 25, 37℃ each in 60 min. The groups were measured by MTT assay. The results were as follows : 1. Among the storage media at 4℃, α-MEM and P-milk had the highest preserving ability of periodontal ligament cells, while that of HBSS, S-milk and tap was low in order. 2. Among the storage media at 25℃, α-MEM had the highest preserving ability of periodontal ligament cells, while that of P-milk, HBSS, S-milk, tap water was low in order. 3. Among the storage media at 37℃, the preserving ability of periodontal ligament cells was very high in α-MEM, P-milk, HBSS and S-milk. it' s lowest in tap water. 4. The preserving ability of periodontal ligament cells in α-MEM was high at 4℃ and it’s low in order of 25℃, 37℃, but in HBSS was high at 4℃ and it's low at 25℃, 37℃. 5. The preserving ability of periodontal ligament cells in S-milk and P-milk was high at 4℃, 25℃ and it’s low at 37℃. In conclusion, HBSS is the storage medium of choice in an avulsion, but in this study it is preferable to choose milk at 4℃ for tooth since it is easy to get and affect cell viability.

김치류 및 절임류의 표준화에 관한 조사연구(2)

조재선,황성연 경희대학교 부설 식량자원개발연구소 1988 硏究論文集 Vol.9 No.-

There are 186 kinds of Kimchi and related products in Korea based on the data published in the period of 11 years from 1976 to 1987. Among which, the varieties of Kimchi which are prepared by Chinese cabbage and other leafy vegetables are 106. And that of Kagdugi and Tongchimi which are prepared by raddish are 26. The products based on chinese cabbage such as Tong bae chu kim chi. Possam kimchi and Paek kimchi are prepared by Chinese cabbage, salt, red pepper, garlic, ginger, welsh onion and water cress as main ingredient and other subsidiary ingredients. Other products based on raddish such as Kagdugi and Tongchimi are prepared by the same ingredients as Chinese Cabbage kimci but the kinds of subsidiary ingredients are smaller than that of Chinese Cabbage Kimchi. Other products such as Yulmu kimchi and Oisobaki were, also, discussed.

선박의장 배치 설계의 검도를 위한 컴퓨터 지원 시스템의 개발 사례

노재정,조형석,전진영,성낙운 경성대학교 공학기술연구소 1999 공학기술연구지 Vol.6 No.-

The purpose of this study is to develop a computer support system for the inspection of the outfitting arrangement of a ship design, which will increase the accuracy and the effectiveness of the inspection process. This system is integrated with a ORACLE database for transferring and storing 3D CAD data into the inspection system, and a dVISE virtual reality system for displaying the attributes of entities and the inspection results.

저압 MOCVD법에 의한 (100)-GaAs 기판 위의 Ga_xIn(1-x)P 성장과 특성

전성란,손성진,조금재,박순규,김영기 全北大學校 基礎科學硏究所 1994 基礎科學 Vol.17 No.-

x??0.51인 Ga_xIn_(1-x)P 에피층을 저압 MOCVD 성장법으로 TEGa(triethylgallium), TMIn(trimethylindium) 등의 MO(metalorganic) 원료와 PH_3(phosphine)를 사용하여 GaAs(100) 기판 위에 성장하였다. 성장조건에 의한 표면 morphology, 결정결함, 성분비, PL spectra, 운반자 농도와 이동도 및 DLTS spectra와 같은 성장층의 특성을 관찰하였다. 650℃의 성장온도와 V/Ⅲ 비, 즉 TEGa와 TMIn 두 원료의 유량에 대한 PH_3의 유량비가 160∼220일 때 가장 좋은 성장표면을 나타내었다. 성장률은 PH_3의 유량변화에 아무런 영향을 받지 않음을 알 수 있었다. Ga_0.51In_0.49P 에피층과 기판의 격자상수 차에 의한 격자 부정합 Δa_⊥/a_0은 약 (3.7∼8.9)×10 exp (-4)이었으며 실온과 5K에서 에피층의 PL 피크 에너지는 각각 1.85 eV와 1.9 eV였다. 성장층의 운반자 농도와 이동도는 V/Ⅲ 비에 따라 달라지는데 그 비가 120에서 220으로 증가함에 따라 농도는 1.8×10 exp (16) ㎝^-3에서 8.2×10 exp (16) ㎝^-3로 증가하였고 이동도는 1010 ㎝/V·sec에서 366 ㎝/V·sec로 감소하였다. Epitaxial layers of Ga_xIn_(1-x)P with x??0.51 were grown on the GaAs substrates oriented 2℃ off (100) toward <110> by low pressure MOCVD growth technique using triethylgallium (TEGa), trimethylindium (TMIn) and phosphine (PH_3). Surface morphology, crystal defects, composition, photoluminescence spectra, carrier concentration and DLTS spectra of the grown layers were investigated. Good quality epilayers with featureless surface were obtained at growth temperature of 650℃ and V/Ⅲ ratio, i.e., PH_3 flow rate divided by the sum of TEGa and TMIn flow rates, of 160 to 220. The growth rate turned out to have no dependence on phosphine flow rate. The lattice mismatchs Δa_⊥/a_0 between grown Ga_0.51In_0.49P epilayer and GaAs substrate were (3.7∼8.9)×10 exp (-4) and the PL peak energies of the epitaxial layer at room temperature and 5K were 1.85 eV and 1.9 eV, respectively. With increasing V/Ⅲ ratio i.e., phosphine flow rate, from 120 to 220, the carrier density and mobility of undoped epitaxial layers increased from 1.8×10 exp (16) to 8.2×10 exp (16) ㎝^-3 and decreased from 1010 to 366 ㎝/V·sec, respectively.

神闕의 穴位 특징과 鍼灸治療에 대한 문헌 고찰

안성훈,조명수,송재수,도진우,김종성,손인철 한국전통의학연구소 2002 한국전통의학지 Vol.12 No.1

This study was designed to investigate the location of Sin-Guel(CV_(8), 神闕) through literature research. We extracted the part about the location of Sin-Guel(CV_(8), 神闕) from ancient and modern oriental medical literature which were used commonly in clinic. The results were summarized as follows; 1. The location of Sin-Guel(CV_(8), 神闕) were generally recorded DangJeJung. 2. Sin-Guel(CV_(8), 神闕) placed in middle of linea alba. 3. Treatment effect of moxibustion on Sin-Guel(CV_(8), 神闕) were recorded as diarrhea, dropsy, prolapse of the anus, stomachache, paralysis etc.. 4. Acupuncture therapy on Sin-Guel(CV_(8), 神闕) is dangerous because of inflammation, it is suggested that acupuncture therapy may be possible if acupuncture therapy do not induce inflammation on Sin-Guel(CV_(8), 神闕).

강관지주의 구조성능 평가에 관한 연구 : Field Surveys on the Use of Temporary Pipe Supports 강관지주의 운용에 관한 현장조사를 중심으로

이재연,안용선,김성수,윤승조,윤현도 牧園大學校 建築·都市硏究센터 1997 建築·都市環境硏究 Vol.5 No.-

This paper describes the procedures and results of field surveys on the use of temporary pipe supports as a preliminary research on the estimation of structural performance of the supports. Question surveys and measuring surveys for the supports were performed in 25 construction fields. From the field survey results, the problems and improvement methods in the use of the supports were presented, and the experiment data for the estimation of structural performance of the supports were accumulated.

좌심방 석회화와 관련된 반복된 좌심방 혈전 1예

김성훈,우성용,오유경,정우백,임철현,신재원,박철수,윤호중,정욱성,홍순조 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.3

알코올에 의해 유발된 진정 및 수행 장애에 대한 카페인의 반전 효과

유남재,김정란,조정혜,왕성근 대한생물치료정신의학회 2004 생물치료정신의학 Vol.10 No.1

연구목적 : 저자들은 알코올의 진정 작용과 수행 붕괴 효과에 대한 카페인의 영향을 확인하기 위해 이 연구를 시행하였다. 방 법 : 건강한 19세에서 25세 사이의 대학생 지원자 14명을 대상으로 Epsworth Slippiness Scale(ESS), Stand-ford Sleepiness Scale(SSS), Visual Analogue Sclae(VAS), Vienna test, Multiple Sleep Latency Test(MSLT) and Breath Ethanol Concentration(BrEC)을 측정하였다. 결 과 : 알코올(1.0g/㎏)은 투여 후 5시간까지 입면잠복기를 단축시키며, 카페인(300mg)은 이러한 단축을 현저히 개선시키는 반전 효과가 있었다. 알코올(1.0g/㎏)은 투여 후 3~5시간 동안 주간 졸음과 피로감을 유발하며, 카페인(150~300mg)은 졸음과 피로감을 개선시키는 효과가 있었다. 경계력은 알코올(0.5~1.0g/㎏) 투여 1시간 후 유의하게 저하되었고 카페인(150~300mg) 투여 3시간 후부터 개선되었으며, 집중력은 알코올(1.0g/㎏) 투여 후 변화가 없었으나 카페인 투여 3시간 후부터 유의하게 향상되었고, 단기 기억은 알코올과 카페인 투여에 유의한 변화가 나타나지 않았다. 기준일, 알코올 투여일, 알코올 및 카페인 투여일에서 각 변량(SSS, MSLT, 졸음, 피로감, 기분, 집중력, 경계력, 단기 기억력)간에는 일관성 있는 유의한 관계가 나타나지 않았다. 정상인에서 알코올은 입면잠복기를 단축시키고 주간 졸음과 피로감을 유발하며, 카페인은 알코올에 의해 유발된 입면잠복기의 단축을 연장시키고 주간 졸음과 피로감 및 경계력과 주의 집중력을 개선시키는 효과가 있었다. 결 론 : 카페인은 알코올의 진정 및 수행 붕괴 효과를 반전시키는 효과가 있음을 알 수 있었다. Objectives : The authors performed this study to identify the effects of caffeine on the alcohoi's sedative and performance disruptive effects. Methods : Epsworth Sleeppiness Scale(ESS), Stanford Sleepiness Scale(SSS), Visual Analogue Scale WAS), Vienna test, Multiple Sleep Latency Test(MSLT) and Breath Ethanol Concentration(BrEc) were checked for the 74 young and healthy college student volunteers aging from 19 to 25 years. Results : Alcohol(1.0g/kg) freduced sleep latency until 5 hours after administration and caffeine(300mg) reversed this effect significantly. Alcohol(1.0g/kg) induced daytime sieepiness and fatigue 3-5 hours after administration and caffeine(l50-300mg) improved sleepiness and fatigue. Vigilance was decreased significantly 1 hour after alcohol administration(0.5-1.0g/kg) and improved 3 hours after caffeine administration(l50-300mg) and attention was not changed after alcohol administration(1.0g/kg) but improved significantly 3 hours after caffeine administration and short-term memory was not changed significantly after alcohol and caffeine administration. On the baseline, the day of alcohol administration only, and alcohol and caffeine administration day, between each vanable(SSS, MSLT, sleepiness, fatigue, mood, vigilance. concentration, and short-term memory) did not show significant consistent correlation. Conclusion : Alcohol decreases sleep latency and induces daytime sleepiness and fatigue, and caffeine prolonges sleep latency and improves daytime sleepiness, fatigue, vigilance and attention in normal subjects. These results showed caffeine reverses alcohol's sedative and performance-disruptive effects.

食品의 알칼리度 測定方法에 關한 硏究

池成圭,黃聖淵,曺載銑 경희대학교 부설 식량자원개발연구소 1987 硏究論文集 Vol.8 No.-

In order to investigate the analytical methods of alkalinity, the alkalinity values of several foods and reference reagents, determined by titration and calculation, were compared values of same food determined by both methods were almost same values Alkalinity It is, therefore, convenient to use calculation method for alkalinity of foods if mineral content of foods were known previously