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.

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.

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.

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.

近代建築에 있어서 形態의 對稱性에 關한 硏究

崔武革,權寧煥,金正在,李郁 경북대학교 공과대학 1985 工大硏究誌 Vol.14 No.-

The symmetry has been denied in modern architecture. But the meaning of symmetry in modern architecture should not able to be interpreted by the static symmetry of the past, because the form in modern architecture, based in the zeitgeist, were the pursuit of free formal construction appearing through the use of new material, the priority of function, the need of new style and the concept of time-space. So the purpose of this study is to find out the symmetrical tendency in modern architecture by six kinds of the symmetry in new arithmetic conception:reflection, cyclic, translation, enlargement, spiral, glide symmetry. As a result of analysis, the architectural form of the grand masters in modern architecture is not simply free form but geometrical form of the more complex dynamic symmetry.

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.

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.

一部 鍍金作業者의 淋巴球 姉妹染色分體交換 出現에 關한 硏究

崔榮珠,金永煥,車喆煥 고려대학교 의과대학 1987 고려대 의대 잡지 Vol.24 No.1

Since the sister chromatid exchange(SCE) technique was developed by Taylor in 1958, it has been modified and utilized in the fields of mutagenicity, teratogenicity and carcinogenicity evaluation not only for academic purpose but also occupational medicine. In Korea, however, very rare approaches to mutagenicity of toxic agents were performed. And no research on SCE in human lymphocytes was reported in relation to occupational working environment up to date in Korea. Therefore this study was designed to know the possibility of utilizing the SCE as an index which could evaluate the effect of toxic chemicals on the health of industrial workers. A total of 32 metal plating workers using chromium which was proved having mutagenicity and carcinogenicity were selected as an experimental group for this studies. The SCE in peripheral lymphocytes of the workers was studied including the amount of chromium excretion in urine, the smoking amount and working years. The results were as follows; 1. The average number of SCE per lymphocyte was significantly higher in plating workers than nonexposure group showing the rate of 1.6 (5.7 v/s 3.6). 2. The difference in SCE status by smoking habit was not statistically significant both in exposure and unexposure groups. There was no difference in SCE status by career of exposed workers. 3. The higher the concentration of chromium in working environment, the higher the number of SCE per lymphocyte in exposed workers was showed, which revealed a clear dose-response relationship. 4. The correlation between number of SCE per cell and amount of chromium in urine was statistically significant with the coefficient of 0.661 showing Y= 0.23X + 3.0 (P<0.01), in which Y indicates number of SCE per cell and X indicates chromium concentration in urine by ㎍/1.

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.

도시 공간구조의 보행자 움직임에 관한 연구

최윤경,권영환 대한건축학회 2003 대한건축학회논문집 Vol.19 No.1

The study intends to understand the pedestrian movement in urban space engendered by the relationship between spatial structure and actual usage by people. For the purpose three urban districts of Insa-dong, Myung-dong and Apkujung-dong are analyzed by Space Syntax method and surveyed for the data of spatial movement of pedestrian and distribution of shops. It is to understand how the people's movement in urban space are influenced by its spatial configuration and by the spatial distribution of shops. The analysis shows that whereas people move around according to the spatial properties of urban structure in In-sa dong and Myung-dong, people move according to the spatial distribution of shops in Apkujung-dong. It is presupposed that Apkujung-dong has a 'transpatial' urban structure while the other two have 'spatial' urban structure. The spatial urban structure is supposed to open to visitors and strangers as well as inhabitants. By contrast, the transpatial urban structure is apt to include only inhabitants excluding visitors and strangers. This exclusiveness is due not to a physical boundary but to a culturally inscribed demarcation which opens itself to the ones who understand the cultural presuppositions imbedded in the area. Understanding the cultural properties of urban space is important for it is directly related to what kind of urban culture we want to generate for the future.