분얼형 옥수수의 식물학적 특성과 RAPD 분석에 의한 근연관계

金哲民,李喜鳳,崔現求,鄭載永,金基薰 충남대학교 농업과학연구소 2001 농업과학연구 Vol.28 No.1

분얼형 옥수수 자석계통의 식물학적 특징, 유전적 거리를 조사하여 새로운 교잡종 육성을 위한 기초자료를 얻고자 실험 한 결과를 요약하면 다음과 같다. 1. 개화기에 있어서 조사된 20계통 중 K15가 가장 빨랐고 K07이 가장 늦은 개화소요일수를 보였다. 2. 간장과 착수고는 비슷한 경향으로 보며 K04가 가장 컸고, K15가 가장 작은 것으로 나타났다. 3. 상관 분석 결과 분열수는 개화기 및 출사기와 고도의 정의 상관을 보였으며, 100립중은 개화기, 이삭높이와 고도의 부의 상관을 가지고 있다. 4. RAPD 분석결과 17개의 BAND가 나타났고 이중 1개만이 monomolpic band를 보였으며, primer 당 평균 4개의 loci를 보였다. 5. 유전적 거리와 식물학적 특성간에는 개화기, 분얼수, 엽장과 100립중에서 관련이 있었다. This study was carried out to obtain a basic information for the development of a new corn hybrid with tillers. Materials used in this study were 20 lines having three to four tillers per plant including the PI213749 U S line with non-tillers. These 20 lines were compared for the botanical characteristics and genetic distances were measured using RAPD analysis. Flowering date of the K15 was very earlier. while the K07 was very late in flowering date. Stem height and ear height were similar except for KO4 and the K15. K06, K13 and K19 lines were appeared to be resistant to lodging due to decreased ear height. Number of tillers per plant of lines used were shown three to five on average. KO9 showed the highest kernel yield, while the K08 was low. Among characteristics measured tiller per plant and flowering dates, and silking dates showed a positive correlation, while 100 kernels weight, flowering date and ear height were shown a negative with tillers per plant. A total of 17 bands by RAPD analysis using four per primer were appeared and these lines were classified into three groups, especially the third group could be classified into of four sub-groups.

RF통신을 이용한 전광판 시스템의 구현

권철우,최성일,정구일,황희융 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-

최근 많은 분야에서 사용되고 있는 RF(Radio Frequency)를 이용하여 원거리에서 무선으로 소형전광판에 문자 데이터를 보낼 수 있도록 하여 손쉽게 문구를 바꿀 수 있는 광고용 전광판을 구현하였다.구현된 전광판은 소프트웨어 부분과 하드웨어 부분으로 나누어서 살펴보면, 사용자로부터 전광판에 표시하려는 문장을 IBM PC에 입력받아서 전광판으로 송신하도록 하는 윈도우용 프로그램과 전광판에 표시될 데이터를 무선으로 수신 받아서 전광판에 표시하도록 해주는 프로그램이 전광판에 사용되는 소프트웨어가 되겠다.IBM PC에서 전광판으로 데이터를 보내고 전광판에서 그 데이터를 받기 위해서 RF모듈을 사용하였고, 전광판에 수신된 데이터를 전광판에 표시하기 위해서 마이크로컨트롤러를 사용하였다.구현된 전광판은 16×16크기의 도트 매트릭스를 각각 12개씩 사용하여 문자열 2줄을 표시할 수 있도록 제작하였다 한 문자를 표현하는데 한 개의 도트매트릭스가 사용되므로 표시될 문자는 16×16도트에 맞는 문자 폰트를 가지며, 문자 폰트를 나타내는 방법은 완성형과 조합형이 있으나 프로그램을 간단히 하기 위해서 완성형을 사용하였다.

GOOSE 메시지를 이용한 거리계전 IED의 성능 향상

高哲鎭,姜相熙 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-

IEC 61850 is the worldwide protocol for the substation automation system. IEG 61850 transports the information which consists of a different format what the information is. If the Information needs real time transmission, GOOSE will be used. And, if the remote current information can transport from a local differential IED to a local distance IED using GOOSE, the distance IED can eliminate the reactance effect. This method improve reliability of the transmission line protection.

자기건강 인식에 따른 건강증진 생활양식 차이 분석

이석인,주희철 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2

This study targets students in four colleges and examines their lifestyles in view of health. It is designed to provide a basic educational material for the healthy lifestyle of college students. The study target was 472 students who took classes related to Health and PE as for their cultural subjects in four different colleges. The surveyed materials were analyzed with SPSSWIN10.0. The results of the study are as follows. 1. The level of practice regarding the students lifestyle of promoting health was obtained by each factor with average or mean (M) and standard deviation (SD). 2. To verity the difference of lifestyles according to the awareness of ones health, one-way ANOVA was conducted. 3. To verify the difference of lifestyles between the students who have a high level of the awareness of ones health and the students who have a low level of the awareness of ones health, t-test was conducted. The results of the study through the study method and procedure are as follows. 1. The lifestyle of unhealthy students turns out to be better than that of healthy students. It is concluded that the awareness of ones health affects ones lifestyle. 2. It shows that most students regardless of their awareness of health have high interests in health management. In particular, as a result of research, students show very high interest in professional health management alone, resulting in total mean 3.50 (SD = .56) out of the lifestyle areas of the total. 3. It is examined that students lifestyle is low in overall. Seen from the results, in the overall lifestyles, the arithmetic average 2.50 and its surroundings are most common. And there are some factors that are far beyond the average. However, the single factor of more than 3.50, which is the upper 30% level, is the professional health management (SD = 0.56). It shows that students overall lifestyle is inappropriate. 4. As part of the efforts to promote public health, it is necessary for college students to make their lifestyles or habits sound and healthy from the beginning. Especially, there is a movement that tries to change the term adult disease into habit disease. It acknowledges that the disease coming from adulthood comes mainly from wrong lifestyles or bad habits of life. 5. Along with the social efforts to manage and maintain public health, it is believed to be necessary for colleges to develop a curriculum and operate it in consideration of embracing this measure into their school policy.

韓國 輸出企業의 인터넷을 이용한 사이버貿易 具現 및 成果에 관한 연구

심상렬,문희철 한국통상정보학회 2000 통상정보연구 Vol.2 No.2

인터넷의 급속한 보급 및 확산은 국제무역에 있어 일대 혁신을 초래하고 있으며, 특히 해외시장조사, 해외홍보 및 마케팅, 거래선 발굴, 신용조사, 거래협상 등 계약 체결 이전까지의 거대경로에 있어 시간과 공간의 제약이 없이 저렴하고 신속하게 글로벌 비즈니스를 수행할 수 있게 하고 있다. 본 연구에서는 한국 수출기업들이 어떠한 업무에 어느 정도나 인터넷을 활용하고 있는지, 실제로 어떠한 활용성과를 거두고 있는지 등을 설문조사에 의한 실증분석을 살펴 봄으로써 국내 수출기업들의 인터넷을 활용한 전자상거래, 즉 사이버무역 내지 전자무역의 활성화 및 국제경쟁력 제고 방안을 모색하고 있다.

윈드서핑선수 체력 트레이닝을 위한 프로그램개발에 관한 연구

이석인,주희철,손재윤 중앙대학교 스포츠과학연구소 2002 體育硏究 Vol.- No.16

The purpose of this research is to investigate training methods and physiological responses according to the indensity through analyzing researches in this area and develope program models for physical training in order to find an effective training method for windsurfing players. 1. Training for Muscular Strength Muscular strength is an important component for windsurfing player to move fast with less fatigue. Weight training is commely used to imporve muscular strength. It is proper for beginners to use loads in the range of 60% to 70% of one repetition maximum, and for athletes in the range of 80% to 100% of 1RM. It is required to do 1 rep at 12-15 RM for 1-2 seconds, and 1 rep at 5-10RM for 2-3 seconds. Moreover, it is adequate for beginners to do 3-5 sets, and for athletes to do 5-7 sets. Handling heavy weights in the pursuit of strength will require a recovery of 3-5 minutes between sets. As 48 hours should elapse between sessions, it is necessary to exercise at least three times a week. Finally, it is important to increase repetitions before increasing the load. The load should be increased by 3-5% of one repetiton maximum after 4 weeks. 2. Training for Muscular Endurance When these ways of training are conducted in good order, it has a good effect on windsurfing players: Chin→up→Hanging-out →Bar →Climbing the rope →Jumping in a crouch →Hanging the rope →Jump over the bench →lifting a sandbag on the top side of the foot →Throwing the ball in the position of lying down 3. Whole body endurance Whole body endurance is usually regarded as cardiovascular endurance or stamina. To improve the whole body endurance, players are trained by the methods such as long-distance run, Country cross, rope jumping, and swimming. Long-distance running is an essential item for windsurfing players to build up their physical strength, especially cardiovascular function. It is effective to run 4-5km at 150-170 heart rates. For rope jumping, exercise 3-5 rounds and do 3 minutes for one round. The significant components of physical strength for windsurfing players are muscular strength, muscular endurance, and whole body strength. The training for these factors would have an important influence on windsurfing players.

튜브시트 영역에서의 확관 검사를 위한 보빈 와전류신호 예측 및 해석

신영길,송성철,정희성 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

Steam generator(SG) tubes are expanded inside tubesheet holes by using explosive or hydraulic methods to be fixed in the tubesheet. In the tube expansion process, it is important to minimize the crevice gap between tubesheet and the transiton region of tube diameter. In this paper, absolute and differential bobbin probe signals are predicted by a numerical method for several different locations of tube expansion inside and outside the tubesheet and signal variations due to tubesheet, tube expansion and operating frequency are high frequency is good for sizing of expanded tube diameter as well as the detection of transition region. Also learned is that the absolute signal is good for the measurement of expanded tube diameter and the differential signal is good for locating the top of tubesheet and both edges of transition region.

단백질 보충제와 크레아틴 보충제

이석인,주희철 중앙대학교 스포츠과학연구소 2000 體育硏究 Vol.- No.13

Based on available literature, this study has found the results as follows. 1. Protein Supplementation For bodybuilders to increase their weight and muscle volume, it is effective to take suitable amount of anabolic amino acids, BCAA(branced chain amino acids, GH(growth hormone) amino acid, and glutamine amino acid. 2. Creatin Supplementation Based on availbable literature, short-term creatine supplementation enhances sprint performance as well as maximal strength and power during maximal effort muscle contractions. Moreover, long-term supplementation of creatine has been reported to promote significantly greater gains in strength, sprint performance, and fat free mass during training in comparison to matched-paired placebo group(Becque, B. et al, 1997). The only side effect of creatine supplementation during exercise performance is safe and effective. Therefore it is recommended that bodybuilders take protein supplementation and creatine supplementation during training to improve muscle development and enhance strength.

인삼사포닌의 마우스 비장 임파구에 대한 면역활성

정경수,이대우,양희정,이순철,김길현 충남대학교 약학대학 의약품개발연구소 1994 藥學論文集 Vol.10 No.-

To ellucidate immunologic activities of ginseng saponin, the splenic leukocytes of BALB/c mice were incubated in RPMI medium for 48hr with or without ginseng total saponin(GTS), and then analyzed flow cytometrically. Upto the concentration of 100㎍/㎖, GTS exherted stimulatory effect on the immune cells most prominently on B cells: the percentage of the surface Immunoglobulin (sIg) -positive cells (B cells) of the control was 47.l%, while that of GTS treated was 58.9%. The percentages of monoclonal antibody(mAb) J1j-reactive cells (T cells) were 28.8% and 3l.3%, those of mAb Gkl.5-reactive cells (CD4' T cells) were l8.5% and l9.l%, and those of mAb M1/70-reactive cells (mostly macrophages) were 4.4 and 5.0% at the concentration of 0 and 100㎍/㎖, respectively. However, at the concentration of 300㎍/㎖ or higher, GTS was found to be toxic to the immune cells especially to B cells in that the flow rate of the cells (gated viable cells) significantly decreased and the percentage of B cells droped from 58.9% to 31.2% and 25.4% at l00, 300, and 1000㎍/㎖, respectivelly. These data strongly suggests that GTS would exhert B-cell mitogen-like activity at physiological concentrations of 100㎍/㎖ or lower.

자성체 가스관에서 복수의 결함에 의한 원격장와전류 신호특성 조사

신영길,이윤태,송성철,정희성 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

Remote field eddy current testing signals have unique signal characteristics such as the equal sensitivity to ID and OD defects and the linear relationship between defect depth and phase signal strength. In this paper, those and new signal characteristics are studied by carefully prepared experiments with gas pipes. Many kinds of defects are designed and fabricated, such as ID and OD defects, axial and circumferential defects, and multiple defects on the same circumference. Multiple defects on the indirect paths and very long defects reveal the linear relationship between defect depth and phase signal strength. Equal sensitivity to ID and OD defects is also demonstrated. It is found that the phase signal is more sensitive to axial defects and the phase signals from circumferential defects tend to underestimate the total defect length.