토양에 폐기시킨 배추의 분해중 미생물 군집의 변화

한홍의,우석종,하영걸 ( Hong Ui Han,Suck Jong Woo,Yong Keol Ha ) 한국환경생물학회 1991 환경생물 : 환경생물학회지 Vol.9 No.1

Attempts were made to study microbial community dynamics in the biodegradation of waste cabbage recovered from Kimchi preparations on the soil-bed and waste filtrates obtained from the degraded cabbages. On the soil-bed, Gram positive and Gram negative bacterial communities developed and transformed pH to 4.5, and the concurrent putrefaction of waste cabbages were observed for 6 days. In waste filtrates, pH reached 8.5 by the continuous growth of bacterial communities and thereafter algae started the growth. In bacterial communities, dominant species were Erwinia cypripedii, Lactobadllus farciminis and L. fructosus in the soil-bed, and Erwinia salis, Bacillus coagulans, B. cereus and B. subtilis in the aerated waste filtrates. Dominant algae was identified as Scenedesmus dimorphus. The optimal culture conditions of algae were that illumination density, pH and amount of aeration were 16 Lux, 9, and 4 litre per minute, respectively. Through the algal growth in aerated waste filtrates, phosphorus and nitrogen were removed by about 81% and 60%, respectively.

김치의 유산균 생태

한홍의 한국미생물학회 1991 微生物과 産業 Vol.17 No.3

김치란 상품의 가치를 유지하기 위하여서는 지금까지 시도된 물리, 화학적 방법만으로는 성공적이 될 수 없다. 그 중요한 이유 중의 하나는 고유한 우리 김치의 풍미를 만들어내는 주된 유산균은 어떤 종이며 그 특성이 무엇인가가 밝혀지지 않았기 때문이다. 시행착오적인 물리, 화학적 처리 방법의 도입으로 인하여 고유의 윤산균이 증식하지 못한다면 김치의 고유성을 상실할 수 있기 때문이다. 결국 김치의 산패와 연부는 시간이 경과됨에 따라서 군집제어적으로 일어나며 그 고유성과 풍미를 유지하기 위하여 새로운 도태압의 개념이 도입되어야 할 것이다. 김치의 미생물생태에 대한 연구가 거의 없으므로 본 절에서는 필자의 연구실에서 진행되고 있는 배추김치의 미생물에 대한 연구내용을 요약하여 소개하고자 한다.

수종의 세균공존에 의한 Furfural의 분해

한홍의,홍순우,하영칠 한국미생물학회 1979 미생물학회지 Vol.17 No.4

Pseudomonas sp. 세균주와 Zoogloea sp. 한 균주를 토양에서 분리하였으며 이들 균주는 furfural로부터 전환된 2-furoic acid와 primary amine group을 포함한 어떤 물질을 매개체로 이용함으로서 상호간에 procooperation과 Synergism을 보여 주었다. 이에 의하여 furfural이 완전히 산화됨과 동시에 탈색이 되는데 그 효과는 단일균주보다 혼합배양이 보다 효고적이었다. Three Pseudomonas spp. and one Zoogloea sp. which could docompose the furfural were isolated from the enriched undefined cultures of soil. In the decompositioin of furfural thyey demonstrated protocooperation and synergism, utilizing 2-furoic acid a certain sudstance fural was subject to complete oxidation, which resulted in decolorization by mutural interactions. The decomposition was more efficient in mixed cultures than in a single culture.

한국산 맥주성분에 관한 연구 (제 1 ) "Total carbohydrates, amino acids 및 peptides 의 정 에 관하여"

한홍의,김종협 한국미생물학회 1968 미생물학회지 Vol.6 No.2

Total carbohydrates, amino acids and peptide-like substances in two kinds of Korean lager beers have been analyzed by the calorimetric method of Dreywood's anthrone reagent and Fowden's ninhydrin reagent. The samples were fractionated with column of ion-exchange resin. The experimental results are as follows; 1. Amounts of non-hydrolyzed carbohydrates in the part of column processed is 1. 82% and 1. 96 % (the value was measured by Bertrand's method). But the amounts of those measured by Dreywood's anthrone method are 5.57% and 4.25%, this values are much more than those of Bertrand's method. 2. It can be estimated the amounts of gum and dextrin are 3.75% and 3.30% in both two beers, by comparison of samples with the above mentioned two method. 3. The amounts of carbohydrates by anthrone reagent in acid-hydrolyzed beers are much increased than those of non-hydrolyzed, so it is suggested the presence of polymer carbohydrates which couldn't be detected by Bertrand's method. 4. Total amounts of amino acids are 0.015% and 0.025% (as glycine) in non-hydrolyzed beers measured by ninhydrine color reaction method, on the other hand the amount of amino acids in acid hydrolyzed beers are 0.06% and 0.056%, this is much more than those of nonhydrolysis. The different amounts means that of peptide-like substances. 5. It is necessary to determine the constituent of amino acid for the better taste of beer, and also it is desirable to check the role of carbohydrates in the course of fermentation, mashing and on lager beer for effective utilization of carbohydrate materials to eliminate the losses.

서울시 광화물 지역의 대기질 변동 특성의 추계학적 분석

한홍,김영식,Han, Hong,Kim, Young-Sik 한국환경보건학회 1991 한국환경보건학회지 Vol.17 No.2

The stochastic variance and structures of time series data on air quality were examined by employing the techniques of autocorrelation function, variance spectrum, fourier series, ARIMA model. Among the air quality properties of atmosphere, SO$_{2}$ is one of the most siginificant and widely measured parameters. In the study, the air quality data were included hourly observations on SO$_{2}$ TSP and O$_{3}$. The data were measured by automatic recording instrument installed in Kwanghwamoon during February and March in 1991. The results of study were as follows 1. Hourly air quality series varied with the domiant 24 hour periodicity and the 12 hour periodic variation was also observed. 2. The correlation coefficients between SO$_{2}$ and O$_{3}$ is -0.4735. 3. In simulating or forecasting variation in SO$_{2}$ ARIMA models are on a useful tools. The multiplicative seasonal ARIMA (1, 1, 0) (0, 2, 1)$_{24}$ model provided satisfactory results for hourly SO$_{2}$ time series.

쉬지 말고 배우고 실천하라 : 잭 웰치로부터 배운다(4)

한홍 두란노 2004 목회와 신학 Vol.- No.185

한국교회는 그 동안 전무후무한 양적 성장에 도취해서, 급변하는 시대의 변화를 전혀 읽지 못하고 이제 와서야 허둥대는 비대한 거인은 아닌가? 당장 우리의 차세대 교육만 해도 그렇다. 옛날에는 여름성경학교를 한다 하면 교회 안 다니는 애들도 다 몰려올 만큼, 교회 문화가 최고의 문화이벤트였는데, 인터넷과 '플레이스테이션'과 휴대폰과 각종 엔터테인먼트가 범람하는 요즘 우리의 어린이들과 청소년, 청년들은 썰물처럼 교회에 등을 돌리고 있다. 물론, 교회가 같은 방식으로 그 "경쟁상대" 들과 맞붙을 순 없다. 그러나 적어도 그 유혹들의 실체는 정확하게 파악하여 그 이상의 감동과 비전을 주는 사역을 준비하고 실행하는 꾸준한 노력을 해야 하지 않을까? 복음의 에센스는 목숨을 걸고 보존하자. 그러나 그 복음을 이 급변하는 세상에 전하기 위한 방법은 모든 것을 동원하자. 보트에 끌려가는 수상스키처럼 간신히 세상의 변화를 좇아가는 데 그쳐선 안 되겠다. 우리가 세상 문화 최선봉을 앞서가는 보트가 돼야 한다. 사이버 스페이스도, 블로그도, 채팅방도 하나님의 사람들이 먼저 뛰어들어가 있어야 한다. 심방도 성도들이 일하고 있는 직장 현장으로 뛰어들어가라. 가서 설교만 하려 들지 말고, 그들의 전문분야에 대해 열심히 배우라. 보험업자들의 끈기, 기계공의 장인정신, 광고인들의 창조성, 스포츠 선수들의 자기 절제를 한 번 다 흡수하여 목회 리더십에 더할 수만 있다면...아! 생각만 해도 흥분의 된다. 끊임없이 모든 사람들로부터 배우고, 배운 것을 실천하자. 우리의 목회는 한 차원 높게 비상할 것이다.

모두의 능력을 극대화하라 : 잭 웰치로부터 배운다(3)

한홍 두란노 2004 목회와 신학 Vol.- No.184

잭웰치는 CEO의 사명중 가장 중요한 것 중의 하나는 “모든 직원들의 지식을 한데 모아 중요한 일에 집중시키는 것”이라고 했다. GEO는 스펀지처럼 모든 사람들의 좋은 아이디어들을 흡수하고 그것을 연구하기 위해 노력해야만 한다는 것이다.

부드러운 서번트 리더십

한홍 숙명여자대학교 숙명리더십개발원 2005 숙명리더십연구 Vol.1 No.-

拔齒 및 非拔齒 治療症例에서의 治療前後 齒列弓形態의 變化에 關한 硏究

韓泓,車敬石 단국대학교 치의학연구소 1990 논문집 Vol.2 No.-

This study was carried out in order to findout the amount of tooth movement, the cahanges arch size and the changes in arch morphology following orthodontic treatment and to provide a guideline for to predict post-treatment arch morphology. The sample group for this study consists of 15 males and 22 females, totalling in 37 persons, who received orthodontic treatment at Orthodontic Department of DanKook Univ. Dental Hospital. They are classified into Extraction Class Ⅰ treatment group (EⅠ), Non-extraction Calss Ⅰ treatment group (NⅠ), and Non-extraction ClassⅢ treatment group (N Ⅲ), according to their pre-treatment malocclusion state and methods of treatment. Following conclusions and averaged dental arch form for each group were obtained by cephalometric linear measurements and dental arch measurements using pre- and post-treatment lateral cephalograms and plaster study models. 1. Intercanine width were reduced in max. of both EⅠ and NⅠ during the period of treatment. 2. Intermolar width were reduced in max. of EⅠ and increased in max. of NⅠ. Therefore although there was no difference between these two groups before the treatment, intermolar width of the max. of NⅠ was wider than that of EⅠ after the treatment. 3. PMV-incisor distance and PMV-canine distance were decreased in both max. and mand. of EⅠ and that of NⅠ, during the period of treatment. PMV-molar distance was decreased in both max. and mand. of NⅠ and in mand. of NⅢ. 4. Items that showed stability during the treatment were: max. & mind. PMV-molar distance, mand. intercanine and intermolar width in EⅠ; mand. intercanine and intermolar width in NⅠ; mand. & max. PMV-incisor distance, PMV-canine distance, max. PMV-molar distance and max. & mand. intercanine and intermolar width in NⅢ. 5. The differences in averaged canine and molar variances to post-treatment dental arch form were present only in EⅠ and in NⅠ. There was no variance between maxilla and mandible in each group.

예측전류제어기를 이용한 3상 PWM 컨버터

한홍일,함년근,성낙규,이승환,이훈구,오봉환,한경희 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

PWM converter has better power factor and low harmonic components than conventional diode rectifiers and phase controlled rectifier. Also the DC link voltage can be regulated fast and stable against the variation in the load. In order to regulate for DC link voltage, rapid current control is need for source current control. This paper focuses on the improvement of quickness of current controller to know the transient state characteristics of regulated DC link voltage against the variation in the load. To do this, it is adopted to three phase voltage type PWM converter with space vector pulse width modulation(SVPWM) method and synchronously rotating d, q axis current. Each d, q axis current is controlled independently. To control d, q axis current, Current control methods to be applied in system are PI current control and Predictive current control respectively. As a result, Transient response characteristic of Predictive current controller is superior to PI current controller.