Polyamines 처리가 상추의 senescence에 미치는 영향 : 1.Senescence 중의 polyamines 함량에 따른 상추 잎의 단백질과 엽록소 손실의 억제에 대하여 1.Inhibition of Protein and Chlorophyll Loss of Lettuce Leaves as Related to Polyamine Content During Senescence

韓光洙,吳春錫,金栽喆 又石大學校 1993 論文集 Vol.15 No.-

본 실험은 상추(Lactuca sativa L.) 잎이 senescence되는 동안 방생하는 단백질과 엽록소의 손실을 억제하기 위해 처리한 polyamines의 효과를 알아보기 위하여 시행하였다. 절단되어 암상태로 배양된 잎은 senescence를 시작했으며, 단백질과 엽록소의 함량은 배양 후 24시간에서 48시간에 현저히 손실되었다. 그러나 이들 senescence 과정은 polyamines을 외부적으로 첨가함으로써 억제되었다. 특히 putrescine 0.1mM과 10mM, spermidine 0.1mM과 1mM과 10mM, 그리고 spermine 0.1mM 과 1mM은, senescence 동안의 단백질과 엽록소 손실을 억제하는데 효과가 있었으며, 그 중 1mM spermidine의 효과가 가장 컸다. These experiments were conducted to investigate the effect of polyamines which were applied to prevent the loss of protein and chlloropyll content of lettuce (Lactuca sativa L.) leaves during senescence. Excision and dark incubation of leaves started senescence, which was accompanied by a marked loss of endogenous protein and chlorophyll content, which started at 24-48h of incubation. But both these senescence processes were inhibited by exogeneous polyamines. Especially, 1mM and 10mM putrescine, 0.1mM and 1mM and 10mM spermidine, and 0.1mM and 1mM spermine were significantly effective in preventing protein and chlorophyll loss during senescence, and 1mM spermidine was significantly effective of all.

MATLAB을 이용한 자동차 정속주행 시뮬레이션

한창훈,김승철,박종오,박재현,임영도 東亞大學校 附設 情報通信硏究所 1997 情報通信硏究所論文誌 Vol.5 No.1

An advanced Fuzzy Controller to cruise on the longitudinal road intelligently is proposed in this paper. Typically the vehicle model is represented by velocity, due to its dynamic property and non-linearity. Linear acceleration controller described as the first Fuzzy Controller of most effective control method is applied mainly and the second one based on linguistic description for riding sensitivity is linked with the first and applied. A designed controller is evaluated under MATLAB SIMULINK simulation after it being adapted for virtual vehicle model.

비지에 대한 인식 및 이용실태에 관한 연구

오옥희,한재숙 대한가정학회 2004 Family and Environment Research Vol.42 No.3

Thii study was conducted to investigate the perception and usage of B i through a survey. The subjects of this study consisted of 49.5% males and 50.5% females in the Daegu area The main results are as follows. about 85% of the participants preferred Bi owing to good taste but others didn't like it awing to bad taste. The older generation have liked and eaten it rather than the young Responses to the 13 questions about Bizi were measured on a 5 point Likert scale. The item 'Bi is traditional food' was received the highest point but 'Bizi is delicious' earned the lowest. Furthermore, there were certain significant differences according to the age of the consumer. Dishes using B i as the main ingredient were listed accoding to perception as follows. Bizi-Chigae, Big-Bidaeduck, Bi-Jun, and so on. About one half of the subjects knew how to make Bi and 40.4% of them inherited the recipes from their mothers. Prospects for Bizi consumption showed differences according to the type of generation. About 50.oOh said the plan should be 'suggested cooking methods' and 'made of good quality domestic soybean' for the purpose of better improvement and exlention of consumption

ESO기법을 이용한 신뢰성 기반 형상 최적설계

오영규,박재용,황승민,임민규,박재용,한석영 한국공작기계학회 2009 한국공작기계학회 춘계학술대회논문집 Vol.2009 No.-

This paper presents a reliability-based shape optimization (RBSO) using the evolutionary structural optimization (ESO). An actual design involves uncertain conditions such as material property, operational load and dimensional variation. The deterministic optimization (DO) is obtained without considering uncertainties related to uncertainty parameters. However, the RBSO can consider the uncertainty variables because it has the probabilistic constraints. In order to determine whether the probabilistic constraint is satisfied or not, simulation techniques and approximation methods are developed. In this paper, the reliability-based shape design optimization method is proposed by utilizing the reliability index approach (RIA), performance measure approach (PMA), single-loop single-vector (SLSV), adaptive-loop (AOL) are adopted to evaluate the probabilistic constraint. In order to apply the ESO method to the RBSO, a sensitivity number is defined as the change in the displacement. Numerical examples are presented to compare the DO with the RBSO. The results of design example show that the RBSO model more reliable than deterministic shape optimization.

광촉매 산화반응에서 촉매의 비표면적과 기공 크기가 활성에 미치는 영향

오송택,최재석,이한수,이호인 한국공업화학회 2003 응용화학 Vol.7 No.2

Mesoporous TiO₂was prepared using esterification between poly ethylene glycol(PEG) and acetic acid, and was applied to the photocatalystic decomposition of 2-isopropyl-6-methyl-4-pyrimidinol (IMP), cyanide ion, and rhodamine B (RB) in order to study the effect of surface area and pore size on the activity. When catalysts had similar specific surface areas, the activity of photocatalytic decomposition of IMP was proportional to the pore size due to more facile diffusion into the pore. However, in case of cyanide which size is much smaller than the pore size of TiO₂the activity was proportional to the specific surface area, while a very large size molecule of RB caused low activity due to difficulty in diffusion into the pore.

營業停止 處分을 받은 衛生業主들의 意識行態

오서경,박재용,한창현,차병준 경산대학교 보건복지연구소 2000 保健福祉硏究 Vol.5 No.-

A survey was conducted to 252 owners of restaurants and taverns who, during the period of from Jan, 1 1998 to Sept.15 1998, were ordered by the authorities concerned to suspend their businesses due to the violations of relevant laws an regulations. Out of 252 questioned 195(77.4%) were those who completed the required orientation course for owners of the above businesses. It is found that the rate of completion of the course are higher among those who had been running the business for a longer period of time, and alwo among those who had bigger facilities. Asked how they found the current laws and regulations relevant to their businesses, 68.7% of the surveyed replied that the existing laws and regulations should be abided by while 26.6% wanted flexible application of the laws and regulations. Those who demanded complete revision of the laws and regulations were only 4.8% of the questioned. Restaurant owners marked the high rate of 71.3% in the support of the existing laws and regulations, while tavern owners' supporting figure was around 60%. Analyzing the owners of restaurants and taverns who were ordered to suspend their businesses due to their violations of the relevant laws and regulations, it was found that female owners, owners with higher ages, less educated owners and owners of taverns were more likely to violate regulations than the others. And the older establishments, the smaller in size of establishment, and establishments with lesser number of employees were also found to be more likely to make violations. The reasons for the suspension of businesses were as follows in its order of percentage; violation of business hours(37.7%), selling of alcohol to minors(13.9%), abnormal business activities(12.7%), indecent entertainment(10.3%), employment of under-aged waitresses(8.3%). Public prosecutor's office, police, municipal office and district office of a city are empowered to enforce the relevant laws and regulations on restaurants and taverns and to suspend businesses, 43.3% of all the suspension of businesses were made by district offices and 42.5% of them by police, 48.8% of the respondents showed their preference for district office to other law enforcing agencies. Next came municipal office with 29.4% followed by public prosecutor's office(25.0%) and police(21.8%). 77.0% of the questioned answered that they would rather have paid fine than having been suspended of businesses. And most of the owner of the suspended businesses replied that the duration of suspension of businesses must be shortened. Most of the owners of restaurants and taverns who had experienced suspension of businesses(94.0%) replied that they would close their businesses for good if their businesses were suspended again. Asked to make any proposal or suggestion, 67.1% of the surveyed wanted that when any violation were found by the law-enforcing agencies the owners of the businesses were given a chance to correct it before being booked for violation.

폴리에틸렌 글리콜과 아세트산의 에스테르화 반응을 통한 메조포러스 TiO_2의 제조 및 광촉매 산화반응에의 적용

오송택,최재석,이한수,이호인 한국공업화학회 2003 응용화학 Vol.7 No.1

TiO_2 was prepared through esterification between polyethlene glycol(PEG)and actic acid, and was applied to the photocatalytic decomposition of 2-isopropy1-6-nrthy1-4-pyrimidinol. Photocatalytic activity was increased with the increase of pore size which was produced by prmoving PEG diring calcination When excess amout of H_2O was added the catalytic removing PEG during calcination When excess amout of H_2O was added, the catalytic activtiy and pore size dercased as a result of direct hydrolsis vetween titanium precursor and water added. When the amount of PEG increased, esterification occurred more but the activity and the surface area of TiO_2 were derased, esterification because of agglomeration among PEG molecules.

水石景觀에 基礎한 華陰洞 精舍의 空間特性

한재오,윤영활 강원대학교 조형예술연구소 2005 조형예술논문집 Vol.6 No.-

Jeongsa is a kind of building which is a learning place under the control of teacher for confucianism students, and it's often located at the Gok(曲) landscape which is a scene with appearance in a geographical landscape. The scholars established the Jeongsa to enjoy the beautiful mountain and water. For the purpose of avoiding social confusion neo-confucianists tended to seek the place for a secluded life. This schlor's behavior in Chosun imitated a habit such as the life style of Chu-Tzu(朱子) in Song dynasty, China. This Hwaeumdong Jeongsa as a place of seclusion and self-discipline was built by Soo-Jeung Kim(1624-1701) who was a neo-confucianist and a literary man in Chosun dynasty. He tried to embody confucian's outlook on the universe in his Jeongsa space, which adopted a factor of geographical landscape such as rock and stream. Hwaeumdong Jeongsa seems found to be the meaningful garden with symbolim, which could not easily in discovered the others in Chosun dynasty.

수종보익제가 면역세포의 조절 및 Apoptosis에 미치는 영향

한종현,강성용,정현우,오찬호,권진,은재순 대한본초학회 1997 大韓本草學會誌 Vol.12 No.1

The effects of several tonifying prescriptions on the apoptosis of transplanted L1210 cells and the regulation of immune cells in L1210-transplanted mice were studied. Sa-Mul-Tang(SMT), Sa-Kunja-Tang(SKT), Sipjeon-Daebo-Tang(SDT) accelerated the apoptosis of transplanted L1210 cells, and SMT and SKT reduced the mitochondrial transmembrane potential of transplanted L1210 cells. SMT promoted the proliferation of thymocytes and splenocytes in L1210-transplanted mice. Whereas SMT increased CD8+ T_c/T_S cell, Bojung-Ikki-Tang(BIT) decreased CD4+ T_H cell population in the thymocytes of L1210-transplanted mice. SMT and SKT increased the lucigenin chemiluminescence from peritoneal macrophage of L1210-transplanted mice. These results indicate that SMT and SKT have an inductive action of apoptosis of transplanted L1210 cells and peritoneal macrophage activation.

鷄胚의 十二指腸 粘液細胞에 미치는 4 Nitroquinoline 1-Oxide의 影響

吳鎭泰,韓春培,河在淸 부산교육대학교 과학교육연구소 1982 科學敎育硏究 Vol.7 No.-

This experiment was performed to observe the histochemical properties of the mucosubstances in the duodenum of chick embryos and the effect of 4NQO 5x10^-6M and 4NQO 5x10^-7M on the goblet cells of the chick embryo's duodenum. The chick embryos, which was used for this experiment, was seperated into five stages in the process of their developing; 16 day-embryos, 18 day-embryos, 20 day-embryos, 21 day-embryos and 9 day hatched chick. The mucosubstances were stained with Alcian blue pH2.5-PAS, Periodic Acid Schiff(PAS) and Alcian blue pH2.5-Azure. The obtained results were as follows; 1. The histochemical compositions and amounts of mucosubstances in the goblet cells of Chick embryo's duodenum were observed to consist of acid and neutral mucins. 2. The acid neutral mucin's cells were observed to increase in number more in the others long-day chick embryo than 16 day chick embryo in the process of their developing. 3. The histochemical compositions and amounts of mucosubstances in the goblet cells were didn't have the portion differences, but were showed less in the crypt goblet cells. 4. Though 4NQO 5x10^-6M and 4NQO 5x10^-7M had been injected into chick embryo, the histochemical compositions and amounts of mucosubstances in the goblet cells, and their structure of villi were not varied in particular.