국내 인증 공기청정기 시험결과의 통계적 분석

김명운 한국냄새환경학회 2020 실내환경 및 냄새 학회지 Vol.19 No.2

Statistical analysis for the 703 air purifiers certified by Korea Air Cleaning Association from 2003 to 2019 was performed. Sixty-one percent of the products had an area coverage of 15 m2~30 m2 and the median value of the total products was 37.6 m2. The number of certified products by the top five manufacturers was 325, which corresponds to 46.2% of the total products. The median value of the clean air delivery rate (CADR) of the 703 products was 4.8 m3/min but the number of air purifiers over the value increased to 62.5%~66.3% since 2018. The odor removal ratio showed a median of 86.0% which was higher than the certification criteria but had large differences in efficacy in the five test compounds. Removal efficiencies of each compound in terms of the median and ratio to the average value showed acetate > formaldehyde > toluene > ammonia > acetaldehyde in descending order with large variances. The median noise level average value from five positions of air purifiers was 47.7 dB(A). However the medians of the top position and the front, where purified air was vented out, were relatively higher in 49.8 dB(A) and 48.2 dB(A), respectively. Noise level ratio to noise criteria had a median value of 96.4%, which showed that most of the noise levels were distributed near the criteria limit. The probability of the noise level at 100% of the criteria was calculated ton 0.232, which indicated excess noise levels.

韓國産 Zeolite에 관한 硏究 : 化學組成과 X-線 回折 Chemical Composition and X-Ray Diffraction

金明運 建國大學校附設 農業資源開發硏究所 1976 論文集 Vol.2 No.-

韓國産 Zeolite(九龍浦産)의 化學的 組成 및 X-線紛末回折分析法에 의한 Zeolite의 分類에 關해서 다음과 같이 要約한다. 1) 化學組成 으로 볼 때 高 siilica 型의 Zeolite임을 알 수 있다. 2) X-線紛末回折로 區分하면 clinoptilolite群의 Zeolite 로서 比較的 純度가 높다. The chemical composition and the classification by X-Ray diffraction analysis of Korean zeolite are summarize as follows. 1) It is zeolite of high silica type as the chemical composition level. 2) It is high purity and belong to clinoptilolite group by X-Ray diffraction analysis.

Emission Characteristics of a Spiral-shaped Microcavity Laser with a Waveguide

김명운,이창환,김칠민 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.60 No.5

We investigate the emission characteristics of whispering-gallery-type modes (WGTMs) in a spiral-shaped InGaAsP semiconductor microcavity laser with a waveguide, connected to the notch. When the boundary of the cavity is selectively pumped by using cw current injection, WGTMs are launched to the waveguide and then are emitted in two directions from the waveguide in a far-field pattern. By observing the far-field pattern and the emission spectra, we identify the characteristics of the WGTMs launched to the waveguide. The emission spectra show that the two directions are caused by different WGTMs.

임진강 수계에서 소규모 저수지가 본류의 수질에 미치는 영향

김명운 대진대학교 2000 大眞論叢 Vol.8 No.-

Water quality of Imjin River was low as a raw water for drinking which should be at least 2nd grade. The reasons for low quality were polluted water from upstream Hantan River and high organic input from tributary. Self-purification process by the rapid and large quantity of river flow did not play an effective role. The main pollutant of tributary seemed to be non-point source from agricultural soil or forest rather than point source of anthropogenic or livestock wastewater. Small and middle sizes of reservoirs seemed to act as mitigation pond. The over-polluted reservoirs, however, act as a source of pollutant, especially at summer season. Heavy raining during the summer helps large input of suspended solids and recalcitrant from nearby soil or forest rather than dilution effect. It was needed that synthesized design for watershed area and continuous and extended administration.

UASB 반응조에 의한 석유화학폐수의 혐기성 처리

김명운 대진대학교 1996 大眞論叢 Vol.4 No.-

The removal efficiencies of petrochemical wastewater by upflow anaerobic sludge blanket reactor were average 74.6% and maximum 85.7%. pH was maintained between 6.7-7.4 which showed stable reactor conditions. Net production rate of metane and proportion of methane were 3.57L/m³·day and 77.7%, respectively. Other parameters about chemical state of reactor also confirmed stable activity of methanogenic bacteria. This result showed that anaerobic treatment of petrochemical wastewater and obtaining of methane gas from waste are possible. Futher studies about development of pretrement process, unit process, and methanogenic bacteria were required.

農藥의 殘留毒性

金明運 건국대학교 농과대학 연합학회 1967 건농 Vol.- No.1

단수수 條斑細菌病에 대한 品種間 抵抗性 差異와 羅病菌의 窒素 및 糖 含量과의 關係

金明運,白壽鳳,閔庚燦 건국대학교 1969 學術誌 Vol.10 No.1

This experiment was undertaken with the purpose of obtaining the basical data on the culturing techniques, breeding and plant protection in the cultivating of Sweet sorghum in Korea. The Sweet Sorghum 11 U.S. varieties, 2 Japanese and 2 Koreans were cultivated unders the natural condition in infecting of disease. The investigation was performed on the varietal difference in the resist trance to bacterial strip disease and the nitrogen and sugar contents in diseased leaves, and correlation between the diseased ratio and several agronomic characteristics. The results obtained are as follows. 1) It was no found that the variety exempted from disease, White collier, Missouri groytop, Rex, Rurier Var-1 and Atlas were more resisted in certain degree, Sorip-zong (Small grain var.) Tracy, Chinese, Zeuk-Jaelaizong and Honey-I were resited in medium degree and Early sumac, Sugar drip, Red amber, Ames amber and Rex orange were weaker in resistant to disease. 2) In the Correlation between the heading data and degree in resistant disease, generally, medium maturing varites were relatively strong resistant, laste varieties were weakest with exception of very few varieties. 3) In the correlation and regression between the several agronomic characteristics and diseased ratio, the curium lenth and weight of curium had no significant differences, heading date had r= -0,591*, y=90,822-0.354x and brix degree had r= -0.68**, y=19,992-0,246x. 4) The leaves of resistance varieties were more contained the nitrogen, sugar and increased C/N ratio than those of susceptibles.

소양호 수중 생태계에서의 세균 생체물질량의 분포

김명운,강찬수,김상종 한국미생물학회 1989 미생물학회지 Vol.27 No.2

소양호에서 측정된 세균 체적, 세균 생물량 및 세균 생산량 등의 미생물학적인 요인의 변화에 미치는 물리화학적 환경요인의 영향을 통계학적 방법으로 분석을 하였다. 상관관계 분석과 중회귀 분석 결과 수온은 대부분의 미생물학적 요인에 폭넓은 영향을 미침을 알 수 있었다. 총 세균수, 세균 체적, 세균 생물 량 및 saprophyte 수외 변화는 엽록소 a와 pheophytin a의 존재와 높은 상관관계를, $^{3}H$-thymidine incorporation rate에 의해 측정된 세균 생산량은 seston의 농도에 큰 영향을 받는 것으로 분석되었다. 소양호 수중생태계에서의 세균 체적 및 세균 생물량의 미생물학적 요인은 미생물 군집에게 탄소와 에너지원으로 작용하는 유기물질의 제공원인 식물성 플랑크톤의 분포와 seston의 농도에 의해 조절되고 있음을 시사하여 준다. Microbiological parameters such as bacterial biovolume and biomass in Soyang Reservoir was statistically analyzed with the physico-chemical enviromental factors. Analysis of correlation and multiple regression showed that temperature affects most of microbiological parameters. Variations of total bacterial number, total bacterial biovolume and saprophyte number were highly correlatd with the concentrations of chlorophyll a and pheophytin a. Bacterial production by the $^{3}H$-thymidine incorporation rate was largely affected by Seston. It suggests that microbiological factors such as bacterial biovolume and bacterial biomass were controled by the concentration of seston and distribution of phytoplankton which acts as carbon and energy source for the bacterial community in the water column of Soyang Reservoir.

全鰒殼을 利用한 活性酸化칼슘 製造에 關한 硏究

金明運 건국대학교 1981 學術誌 Vol.25 No.1

It determined ignition loss, solubility pH and toxicity from haliotis shell powder treated by temperature. The results were as follows. 1.It producted active calcium oxide from haliotis shell powder by means of high temperature treatment (700-1000℃). Especially increased its yield at 900℃. 2.The solubility increased due to temperature rising. 3.It's water solution is pH 10 and less at 500℃ under but is pH 12 and more at 600℃ over. 4.The rate of survival is 100 percentage in 5g an less and toxicity is none.

O-Methoxy-phenol 誘導體의 合成 및 그 分析化學的 硏究

金明運 건국대학교 1970 學術誌 Vol.11 No.1

The synthetic method of 2-methoxy-5-mitrophenol with mixed acid was reported on Tapan patent (1965) and Korea patent (l964) The author experimented nitration of o-methoxy phenol with cone-nitric acid only, using for solvent with acetic acid. The results were shown in 〈Table 1,2〉 and 〈Fig 1,2〉. ① The author's experiment was more excellent than nitration with mixed acid in process, yield and purity. ② And, it was possible to synthesize various derivatives by substition of atom or atomic group. ③ Through the appearance, the distirction of 2-methoxy-5-nitophenylacetate and 2-methoxy-5-nitrophenol was possible. The said, both substance were identified by means of IR spectra element analysis and Melting Point determination.