암처리 엽수와 기간이 들깨의 생육 및 개화에 미치는 영향

최영훈,최영환,이영근,김용균,손병구,강점순,김근기 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1

The lower leaves shading in upper leaves is unknown to be reduced significantly due to the early differentiation of flower-bud by dark treatment of leaves when growing perilla for harvesting the leaves in the greenhouse during the winter. This study analyzed the effect of dark treatment of leaves on the growth and regulation of flowering, which are closely related with differentiation of flower and amount of leaves. One leaf and 3 leaves per plant were dark treated for 0, 5, 10 days. Plant hight was reduced in 3 leaves treatment, but there was no difference in 1 leaf treatment. Stem diameter was reduced in both 1 leaf and 3 leaves treatments, which was more significant in 3 leaves treatment. Leaf area was reduced when 1 leaf was treated for 10 days, but there was no difference when 1 leaf was treated for 5 days. When 3 leaves were treated, leaf area was no difference between treatments. However, leaf area which 3 leaves were treated was reduced more significantly than that 1 leaf was treated. Seed weight was remarkably decreased when 1 leaf was treated for 10 days, and it was decreased when 3 leaves were treated for more than 5 days.

기내배양시 GA₃처리에 의한 들깨의 생육 및 개화조절

최영환,최영훈,강점순,손병구,이영근,주우홍 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1

This study was conducted to estimate growth of leaf and shoot and flowering as affected by GA3 treatment in vitro. Plant height was longer as the concentration of GA3 was higher up to 2.0mg/l. Stem diameter was thick up to the concentration of GA3 was 0.1mg/l , but become thinner as the concentration of GA3 was higher. Root weight and root length were well developed in GA3 concentration was 0.5∼2.0mg/l. Number of roots was more in GA3 concentration was 0.5 and 1.0mg/l . The first flowering occurred in 40 days after 0.5 mg/l GA3 treatment. As the concentration of GA3 was higher, flowering was delayed. Number of flowering was significantly increased in GA3 concentration was 0.1 and 0.5mg/l. However, it was gradually decreased after 60 days. Percentage of flowering per plant was highest in GA3 concentration was 0.5mg/l , but it was lower as the concentration of GA3 was increased.

단일 처리기간에 의한 들깨의 생육 및 개화조절

최영환,최영훈,강점순,손병구,김용철,최인수,주우홍 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1

It's not uncommon for the amount of leaves to be reduced significantly due to the early differentiation of flower-bud by short-day condition when growing perilla for harvesting the leaves in the greenhouse during the winter. This study analyzed the effect of day-length on the growth and regulation of flowering, which are closely related with differentiation of flower and amount of leaves. Development of new leaf was inhibited by short-day treatment for more than 5 days. As the period of short-day was longer, the effect on the development of new leaf inhibition was more evident. Number of leaves was reduced in both 40 days and 110 days short-day treatments as period of short-day length was longer. Short-day treatment for less than 3 days did not induce flowering, but short-day treatment for more than 5 days induced flowering. As the period of short-day treatment was shorter, percentage of flowering was lower and days to flowering was longer. That is, when treated for 20 days, flowering began in 20 days. Seed weight was reduced as the length of short-day treatment was longer.

들깨종자의 Priming 처리가 불량조건에서 발아증진에 미치는 영향

강정순,최영환,손병구 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1

The purpose of this research was to search for optimized priming conditions for improving perilla(Perilla ocymoides L.) seed performance, and effect of seed priming on germination under adverse environmental conditions such osmotic, salt, and ABA stress. Among the nine different chemicals, at two concentrations each, Ca(NO3)2 at 200 mM resulted in the shortest days to 50% of the final germination percentage (T50). Seeds primed at 20℃ for 3 days germinated most rapidly at 25℃ temperature tested. Air-drying for 3h at 30℃ and room temperature after priming maintained all the advantages achieved during priming treatment. However dried at 50℃ significantly reduced germination and beneficial effect were lost gained by priming. Priming has improved the rate and uniformity of seed germination in perilla, especially under adverse environmental such osmotic, salt, and ABA stress. Germinability was decreased under the increased stress from osmotic, salt, and ABA. Under these increased stress, the germinability of primed seeds was higher and earlier than those of nonprimed seeds.

담배속에서 原形質體 融合과 植物體 再分化

崔奎煥,蔡永岩 서울大學校 農科大學 1988 서울대농학연구지 Vol.13 No.1

This experiment was carried out to determine the proper condition for protoplast isolation and fusion in Nicotiana sylvestris and N. plumbaginifolia, and plant regeneration from fused cells. Enzyme mix of 2.0% cellulase R10 0.5% macerozyme R10 was proper for protoplast isolation from leaf mesophyll cells. Optimum fusin frequency was observed in solution(pH5.8) of PEG(6000) 35% and 9mM CaCl₂Callus was induced 20 days after plating on culture medium. Shoots were formed 6 weeks after plating on shooting medium and rooted on MS basal medium thereafter. Three out of 20 regenerated plants were identfied as somatic hybrids by peroxidase isozyme analysis.

소비전력 모니터링이 가능한 마이크로프로세서 기반 DC/AC 인버터 설계

최영환,김윤호 목원대학교 멀티미디어신기술연구소 2001 멀티미디어신기술연구소논문집 Vol.1 No.1

본 논문에서는 마이크로 프로세서를 이용하여 소비전력 모니터링이 가능한 100[W]급 직류입력/교류출력변환 인버터의 설계방법을 제안하였다. 입출력 제어와 소비전력정보 모니터링을 위하여 장착되어진 마이콤은 OTP형 PIC16C711를 사용하였고 어셈블리언어로 프로그램 하였다. 제작된 시스템을 이용하여 효율실험 및 부하실험을 수행하였고 오차는 3% 이내 임을 확인하였다. Design and implementation method of the 100[W] DC/AC invertor using PIC16C711 processor is described in this paper. Especially, this approach is available for power consumption monitoring. Input/output control ar power consumption monitoring is controlled based on OTP type PIC16C711 processor. Such experimental as function, efficiency, motoring are performed and experimental results showed that monitoring error is less than 3% and widely used in the area of industrial fields.

소형환편기 자동화기술개발에 관한 연구

최세환,장승호,허유,박준희,권영하 경희대학교 산학협력기술연구원 1995 산학협력기술연구논문집 Vol.1 No.-

소형환편기의 자동화기술을 위해 편환을 이동시킬 수 있는 편침과 cam을 편환이송용 장치를 고안하였다. 위편기의 편환이송 mechanism을 해석하고 소형환편기의 물리적 모사를 통해 편침과 cam의 형상을 최적화하였다. 편환이송장치를 사용하여 편물에 다양한 조직을 편성할 수 있는 편기의 개발이 가능하도록 하였다. The latch needle and cam are newly designed and manufactured to transfer the loop for automation of small circular knitting machine. The loop transfer mechanism is analized by the simulation of needle motion on the V-bed flat knitting machine to which optimum designed cam is attached. This loop transfer mechanism can be applied to small circular knitting machine for automation and variable knitted structure.

농장 사육되는 타조에서 나타난 다리 기형의 증례 보고

최종윤,손화영,전무형,조성환,김혜성,류시윤,박배근,이영원,윤원기 충남대학교 수의과대학 동물의과학연구소 2001 動物醫科學硏究誌 Vol.9 No.-

Two farmed young ostrich chicks were applied to pathology laboratory at Chungnam National University. Grossly, one ostrich showed rotated tibiotarsus, the other showed rolled toes. Case 1 ostrich was hypertrophy of fibualis longus and tibial cranialis tendon and gastrocnemius tendon in crus, inflammation of flexor digitorum longus. In histopathological views, myocytes of fiburalis longus were showed hypertrophy and hyperplasia. It is not found any specific feature in X-ray of the case 2 ostrich. Limb deformities were detected frequently in farmed ostrich chicks in 2- to 3 weeks old. Limb deformities were an important cause of mortality in farmed ostrich chicks during the first 10weeks after hatch. Cause of limb deformities were considered a nutrition problem.

인천 인현동 호프집 화재 피해자 분석

최정태,안무업,안희철,최영미,정재봉,서정열,유기철,이삼우,박석현,조준휘,김성환,김아진,송근정 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Purpose : This study was conducted to develop field triage, transportation, distribution, and prehospital care at a fire disaster by analyzing the victims of the fore that broke out at a bar in Incheon. Method : We analyzed the cases of the victims of a fire in Incheon in Oct. 1999. We determined the primary care hospital, the arrival time, the burn size, the outcome, and the injury type from the medical records, the concerned organ records, and interviews with concerned persons. Result : The total number of victims was 137: 56 prehospital deaths, 1 hospital death, and 80 survivals. The Pearson correlation coefficient between the burn size and the severity was -0.175. There were 121(89.6%) cases of inhalation injury, 59 (43.7%) cases of flame burns, 66 (48.9%) cases of hypoxic brain damage, and 16 (11.9%) cases involving other types of injury. Conclusion : The causes of death of the fire victims were inhalation injury and hypoxic brain damage due to CO poisoning and other toxic inhalants. We propose the use of a simple triage and rapid treatment(START) system and a reassessment the delayed category in fire disasters.

STS 304 鋼의 摩滅의 대하여 溫度 및 濃度의 影響에 관한 硏究

崔榮煥,金元鎰 경남대학교 신소재연구소 1993 論文集 Vol.3 No.-

부식환경 중에서의 ??磨滅特性을 明確하게 하기 위하여 오스테나이트스테인레스綱(STS 304)을 사용하여 蒸溜水 및 NaCl水溶液中에서 NaCl濃度, 雰園氣溫度 및 미끄럼距離에 따른 腐?磨滅量을 측정하였다. 또한 이들 雰園氣變化에 의한 摩擦表面層, 接觸 表面層下部의 變質層組織 및 龜裝發生과 傳심擧動을 조사하기 위하여 실험을 하였다. NaCl의 低濃度域에서의 臨界 미끄럼距離는 一定溫度이상에서 급격히 증가하며 이 臨界溫度는 高農度일수록 低溫으로 되고, 輕磨滅에서 比腐?磨滅率 Wsc는 NaCl농도 0.1%에서 最大値를 가진다. 扶植生成感은 潤滑作用 및 表面硏磨效果가 있고 接觸表面에서의 生成物의 生成率과 용액중으로의 批除率이 臨界미끄럼距離에 영향을 주며, 생성율이 높고 批除率이 낮은 조건에서는 輕磨滅狀態가 된다. The present study was undertaken to investigate the corrosive wear characteristics of the austenitic stainless steel(STS 304). The carried out wnder different experimental conditions using the wear test device, which was made in laboratory, and in which the annular surfaces of wear testing specimens were rubbing in NaCl aqueous solution by varying the temperature, NaCl concentration and sliding distance etc. The critical sliding distance in the lower concentration domain of NaCl rapidiy increased above constant temerature and the critical temerature became low with increasing NaCl concentration. It was found that the specific wear rate reach a maximum at about 0.l %, wt.% NaCl concentration. The corrosion product Fe(OH)₃contributed lubrication and polishing effect. The generated rate of corrosive producth and the eliminated rate to the solution from specimen on the surface was found to exert a significant effect on the oritical sliding distance and that the mild wear state still continues under the condition of high generated rate and low eliminated rate of the corrosion product.