Competition Responses of Populus alba Clone ‘Bolleana’ to red:far-red light

Bae,Han-hong,Kang,Ho-duck,Richard B,Hall 한국자원식물학회 2004 Plant Resources Vol.7 No.1

The reduced ratio of red:far-red (R:FR) light acts as a measure of the proximity of competitors and plants can detect the potentially competing neighbor plants by perceiving reflected R:FR signals and initiate the response of “shade avoidance” before actual shading occurs. The phytochrome system is responsible for monitoring the changes in the R:FR and initiating the shade avoidance response. The response to low R:FR ratio was studied in a white aspen Populus alba clone ‘Bolleana’ using two filter systems: a clear plastic filter system that allows a R:FR ratio less than 1.0 to pass from adjacent border plant reflection; and a special commercial plastic that blocks FR light and creates a R:FR ratio above 3.0. The reduced R:FR signals enhanced the stem elongation in response to competition at the expense of relative stem diameter growth. Trees grown inside clear chambers were 27 % taller than trees grown inside the FR-blocking filter chambers. Stem taper of clear chamber trees was 16% less than the FR-blocking filter trees. Low R:FR also induced 22% more stem dry weight and 13% greater petiole length per leaf compared to the FR-blocking filter trees. There were no statistically significant differences in leaf area, leaf number increment, and total dry weight between the two light filter treatments.

김치에서 분리한 Lactobacillus sp. JC-7과 Lactobacillus acidophilus 88간의 Electrofusion 최적조건 설정

조영배,최현정,백형석,전홍기 부산대학교 유전공학연구소 1997 분자생물학 연구보 Vol.13 No.-

김치 발효 숙성기간을 연장하고 신선도를 오랫동안 유지 할 수 있는 김치발효 starter의 개발을 목적으로 최적숙성기에 있는 김치로부터 bacteriocin생성능이 없는 유산균을 분리하여 동정하였으며, bacteriocin생성능이 우수한 L.acidophilus 88을 융합시키기 위해 electrofusion에 대한 최적 조건을 검토하였다. 분리균주는 Lactobacillus속으로 동정되어 Lactobacillus sp. JC-7이라 명명하였다. Electrofusion에 의해 생성된 융합주를 식별하기 위해 streptomycin(2.5㎎/ml)에 내성을 나타내는 Lactobacillus sp. JC-7변이주와 kanamycin(600㎍/ml)에 내성을 나타내는 L.acidophilus 88변이주를 분리하였다. Electrofusion을 100V/㎝, 120msec(72ohms,1670 capacitance) 에서 수행했을 때 융합효율이 가장 양호하였으며 전기장의 세기와 시간이 중가할수록 융합 효율이 현저히 감소하였다. 2가 양이온은 농도가 중가할수록 대체적으로 융합효율을 감소시키는 경향을 나타내었으나 1mM MGCl_2에서는 대조군에 비해 융합효율이 약간 증가하였다. PEG매개에 의한 융합법의 융합효율을 비교한 결과, 융합효율은 chemical fusion<electrofusion<electrofusion+20% PEG순을 나타내었다. Evaluation of Optimum Conditions for the Electrofusion between Lactobacillus sp. JC-7 Isolated from Kimchi and Lactobacillus acidophilus 88. Young-Bae Jo, Hyun-Jung Choi, Hyung-Suk Baik and Hong-Ki Jun*. Department of Microbiology, Pusan National University, Pusan 609-735,Korea-A lactic acid bacterium was isolated from kimchi. The isolated strain was identified as the genus Lactobacillus thrugh its morphological characteristics and named as Lactobacillus sp. JC-7. The optimum conditions for the electrofusion between streptomycin(2.5㎎/ml)resistant mutant of Lactobacillus acidophilus 88 and kanamycin(600㎍/ml) resistant mutant Lactobacillus sp. JC-7 were evaluated. The highest number of fusants were obtained at a capacitance value of 120msec(1670㎌), a field strength of 100V/㎝,and a pulse controller setting of 72Ω. The potimum pH of elecroporation buffer was 7.5 and the concentration of divalent cation was 1mM MG^2+. Electrofusants were efficiently obtained by addition 20% polyethylene glycol to electroporation buffer. The yield of fusion was better than that of using polyethylene glycol mediated chemical induction.

Economy Conditions in the Minimalist Theory : Local or Global

Lee, Hong Bae 대한언어학회 1997 언어학 Vol.5 No.1

Lee, Hong-Rae. 1997. Economy Conditions in the Minimalist Theory: Local Or Global. Linguistics, 5-1, 255-279. The paper discusses the problems related to the "global" nature of economy conditions in the Minimalist Program developed by Chomsky (1993 & 1995), and the advantages of reformulating "global" economy conditions into "local" ones. I suggest the Maximality Condition that requires that the operation with maximal effects be chosen to apply, to supplement Collins' (1997) Minimality Condition. (Seokang University)

수출입 컨테이너 장치장 배정을 위한 소프트웨어의 개발

김갑환,김홍배,홍봉희,김기영,배종욱,최진오,김두열,이영기,박영만,박강태,손행대 한국경영과학회 1995 經營 科學 Vol.12 No.3

The Pusan Container Terminal faces a rapid increase in berthing time of container ships as well as in waiting time of external trucks, which is due to an absolute lack of yard space. This research is focused on the development of a decision support system for the planning of the container terminal yard assignment so that the yard space would be utilized most effectively. Efforts should be given to the reasonable assignment of the yard storage and the dynamic adaptation to the ever changing environment. The software introduced here is based o the know-how of the field exports and its framework takes the approach of the hierarchical decision making.

Human Rotavirus 위장관염에 대한 임상적 고찰

배현,이홍준,서우철,양은석,문경래,박영봉 조선대학교 1994 The Medical Journal of Chosun University Vol.19 No.2

We observed clinical features of 161 patients of acute gastroenteritis who were adimitted to the Department of Pediatrics in the Chosun University Hospital from January 1. 1989 to December 31. 1993. The stool specimen on admission was tested for rotavirus Ag by ELISA(Rotazyme Ⅱ^R)method. The results are as follows : 1) HRV antigen was detected in 97 patients (58.4%) among 161 patients with gastroenteritis. 2) In monthly distribution. 77.7% of cases developed between October and December 3) The majority if patients were under 24month of age with the peak incidnce being between 6-12 month of age. 4) Mean frequency of diarrhea per day were 5.3±2.6 days in HRV antigen rhinorrhea(48.5%), cough(44.7%). Dehydration was noted 87.2% of cases and 93.9% Was isotonic dehydration. 6) The mean duration of hospitalization was 5.3±2.6 days. 7) AST and AIT elevation in HRV group were 91.5%, 42.6% respectively. AST and ALT elevation in Non-HRV group were 73.1%, 26.9% respectively. AST elevation between two group was not correlated statistically. but ALT concentration was significantly increased in HRV group above normal than Non-HRV group (p<0.05%).

한국의 대ASEAN 정보통신산업에 관한 연구

배홍균 한국산학경영학회 2002 산학경영연구 Vol.15 No.-

ASEAN지역의 IT 산업은 우리에게도 지역내 IT 시장에서의 새로운 기회를 가져다 줄 것으로 기대된다. 이에 따라 우리는 새로운 기회를 새로운 도약으로 이어갈 수 있도록 우리나라 IT 산업의 경쟁력을 제고하여야 한다. 이를 위해 우리는 우리나라 IT 산업을 지역내 국가들에게 효과적으로 홍보하고, ASEAN IT 산업의 표준을 선도하고, 지역내 국가들과의 IT 산업관련 R & D 및 생산에서의 협력을 강화함은 물론 후발국가들의 도전을 슬기롭게 극복할 수 있어야 하겠다. 이에 본고에서는, 한국에 있어 ASEAN 시장의 중요성을 인식하고 한 ·일 ·미와 ASEAN간 정보통신산업에 있어서의 시장흐름과 무역간의 결합도를 알아보고, 주요 정보통신산업의 새로운 투자유망지역으로 떠오르고 있는 ASEAN 지역의 투자현황을 살펴보고 양지역간의 경제적 협력을 제시해 보는데에 목적을 두고자 한다. In Korea's point of view the ASEAN is geographically located near to Korea's peninsula and can supply Korea with IT products safely, it is also a significant market that we can effectively export IT products. This study analyzes ASEAN as a strategic market, by enlarging thee IT export and import, Korea's IT market excessively leaning upon the United States and Japan's market, so ASEAN is the proper market to which we can drive multilateral trade of IT market and multikinded trade of goods. In order to enhance exports of various IT products, we have to retain a good reputation and to remove revolting factors. Also, the marketing of Korea's IT export against ASEAN have to reinforce and to activate the direct investment, plant exports, and loan credit. Therefore, this study reviews Korea's IT Industry analysis to ASEAN, and finally we suggest the way to solve the main problems.

일반외과 영역에서 염증성 질환에 대한 Carumonam sodium의 임상효과 및 안전성 평가

배진선,신홍식 최신의학사 1993 最新醫學 Vol.36 No.4

통신서비스시장의 변화와 M&A 방안에 관한 연구

배홍균 尙志大學校産業經營硏究所 2003 産業經營硏究 Vol.13 No.-

Telecommunication industry considered as the core one in the 21st century has been shaking after dot-com's collapse and global economy's worse. The rapidly growing mobile operators and tools manufactures show thousands of hundred millions' decline in the Under this situation Each Government and Company is struggling with alternatives which overcome the crisis and its level strategically in the telecommunication industry. In order to prevent mobile phone and wireless high speed Internet services from being in saturation soon, new provision is to needed in the existing telecommunication industry in Korea, and the government should do their best for policy making to maximize customer's profit and operator's competitive power against the criticism on policy misrule and competition for competition principle occurring in advanced countries recently. Merger and acquisition(M&A) was popular over all the world not only in telecommunication industry but also among inter industries while telecommunication business was booming mainly in internet and mobile sector until 1999, but there have been some sings that the telecommunication industry has been heading for a downturn in US and Europe when Internet bubble has bursts since 2000. In 2001 telecommunication depression was expedited universally and this caused to reduce tool operators due to rapid curtailment of facility investment and shrink of solid domestic call operators. The numbers of M&A increased a lot in 2001 compared in 1999, especially in IT. M&A has been increasing in telecommunication service market recently. Therefore, this study is to analyze characteristics of telecommunication service operators in the market in US, Japan and Korea, and research into crisis situation in main telecommunication operators abroad and implication M&A occurring in the telecommunication service market, and find political implication which affects domestic telecommunication industry through cause and direction of solution for this crisis situation.

불안정한 지지면에서의 평형 훈련이 편마비 환자의 균형 능력에 미치는 영향

배수찬,김근조,윤홍일 대한정형물리치료학회 2001 대한정형도수물리치료학회지 Vol.7 No.2

The purpose of this study was to investigate the balancing training effect on weight bearing ratio and postural sway on the unstable surface for the CVA patients with balance disability. The inclusion criteria were walking independently 20m distances. Eighteen subjects, 4 with right and 14 with left hemiplegic patients were participated in this study. The range of age was from 35 to 75 and the duration from onset time was from 1 to 38 months. The intervention program including balancing training that they were introduced for 10 minutes every other day during 12 weeks to experimental group, and general therapeutic exercise to control group. The result of this study were as following: 1. The balancing training on the unstable surface showed that the postural sway of left/right distribution would appear more effective on sitting with eyes opened. 2. The balancing training on the unstable surface showed that the postural sway of forward/rear distribution, left/right distribution and distance would appear more effective on standing with eyes opened. 3. The balancing training on unstable surface would increase more effective on the weight-bearing ratio of left/right difference and frequency. 4. The balancing training on unstable surface was statistical significant on the postural sway of left/right distribution and area in experimental group, and it was statistical significant on the postural sway of forward/rear distribution, left/right distribution and distance in control group, too.

일체형 촉매변환기의 비정상 열적 거동해석을 위한 수치해석 방법

배상수,강동진,임홍식 嶺南大學校 工業技術硏究所 1995 工業技術硏究所論文集 Vol.23 No.2

A numerical procedure for the analysis of transient behavior of a monolithic catalytic converter is presented. The thermal behavior of a monolithic catalytic converter is fully coupled with mass transfer and exothermic reaction between exhaust gases and the catalytic converter. In the present study, all these processes are solved simultaneously. The heat transfer process is also simply modelled by using combinging one dimensional convention and conduction and the chemical reaction is also simply modelled by using the concepts of reaction rate and reaction heat. All the partial differential equations for the heat transfer, mass transfer and chemical reactions are approximated by using finite volume method. Resulting algebraic equations are solved using the Newton's method. To see the workability of present numerical method, two well known problems, step increase and step decrease in the gas inlet temperature, have been calculated. Present numerical method shows a good convergence behavior for two test cases : converged solution were obtained with 8 iteration (for tolerance of ??)at most through out the whole calculation domain of space and time. Comparison of present solutions with previous solutions shows a good agreement.