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닥섬유사 흡수량과 염색 불균일의 상관관계에 관한 통계적 평가
장영상,최경은,정우영,손희정,길명섭,Jang, Young-Sang,Choi, Kyung-Eun,Jung, Woo-Young,Son, Heui-Jeong,Khil, Myung-Seob 한국섬유공학회 2014 한국섬유공학회지 Vol.51 No.2
In this study, the correlation between the uneven dyeing and absorption of mulberry fibers was investigated by an effective vertical strip test. The purpose of this study was to determine the effect of uneven dyeing on the difference between the absorption of mulberry fibers. The samples, tape yarns with a width of 1.5 mm, were subjected to the vertical strip test; subsequently, they were subjected to statistical analysis to estimate the evaluation of the test method. The morphology and chemical composition of the samples were analyzed by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The statistical results confirmed that a strong correlation existed between the absorption and uneven dyeing of mulberry fibers ($F_o=1.849$, P=0.0012).
장은혜(Jang, Eun-Hye),김미경(Kim, Mi-Kyung) 한국실내디자인학회 2012 한국실내디자인학회 학술대회논문집 Vol.14 No.3
Today, owing to technological advancement in medical science and economic development, the Average Life Expectancy in our society continue to increase. However, unlike the past, current elderly people are required a high quality of life. Consequently, there has recently been a increasingly faster development of the welfare housing for the aged. Especially, since the elderly residents of elderly selfare housing are at an age range in which they experience decrease in social activities, there is a need for public spaces to support their health and everyday lives. Therefore this study aims to find out the planning characteristics of space organization of the public spaces in urban elderly welfare housing as to provide the basic materials for planning spaces for the elders.
학술 논문 : 수은에 대한 물질흐름분석 및 인체 위해성평가
장은실 ( Eun Sil Jang ),김경환 ( Kyung Hwan Kim ),황윤형 ( Yoon Yung Hwang ),허탁 ( Tak Hur ) 한국전과정평가학회 2011 한국전과정평가학회지 Vol.12 No.1
Concerned about the harmful effects of mercury on human, the flows of mercury need to be analyzed to trace where it is used and decide how to manage it. In the study the substance flows of mercury are identified through the SFA (Substance Flow Analysis) and the effects of mercury on human are examined using HRA (Human Risk Assessment). The MFA study shows that the total consumption of mercury in 2009 is reduced by 42%, compared to 2000. It is used mainly in lighting appliances such as HID (High-Intensity Discharge) lamp, fluorescent lamp, and cold cathode fluorescent lamp. It is mainly input to construction and electronic & electricity industry and waste mercury is recovered from descarded lighting appliances. At present, however, the collected mercury from the discarded products is disposed because of technical and economical difficulties. In the past the domestic demand of mercury was much larger than now and thus, the environmental emission of mercury is mainly from the manufacturing` stage. On the other hand, at present proper management of waste mercury becomes critical, since recently the demand of mercury decreases significantly and at the same time the increased amounts of mercury containing products are discarded. The HRA is carried out to examine the probability and likely-hood of hazardous impact of mercury to human for each region. The disposal plant of mercury-containing products shows much higher potential risks on human than more populated place with high consumption of mercury-containing products. It is due to that the amounts of discarded products with contain mercury increase, while the amounts of new mercury-containing products decrease because of international regulations. Thus, the management of waste mercury is critical in order to reduce the risks of mercury to human. In addition, the amounts of mercury emission are analyzed for 16 cities/provinces in Korea using the factors which consider the characteristics of different mercury containing products. Human exposure assessment is performed considering the amount of mercury exposed by air inhaled and water intake. The results of risk characterization show that the most harmful place for human risk is different from the place with the largest amount of mercury emission.
주거시설의 화재 안전관리를 위한 소방시설 설치 규제의 문제점 및 개선방안 연구
장경은(Jang, Kyung-Eun),정유미(Jung, Uemee),손동욱(Sohn, Dong-Wook) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.2
Fires are one of the disasters that occur as social disasters when they occur in the city center, leading to casualties and spread of damage to surrounding areas. Seoul is the most densely populated area, and there is a risk of increasing range of fire as the proportion of residential facilities among building types is high. Among the number of fires in Seoul over the past 10 years (2009-2018), apartment houses have a higher incidence than single-family houses, and the fire risk of apartment houses is also higher than that of single-family houses. In order to reduce the risk of fire, it is necessary to respond appropriately to the initial firefighting activities, install and manage firefighting facilities. Houses with 4 stories or less are excluded from the specific firefighting targets specified in the current laws. It was analyzed that the use of fire extinguishers was lower in apartment houses and multi-family houses than in apartments, and the initial firefighting activities were also analyzed to be placed in a safety blind spot where buckets and sand were frequently used. Based on this, it appears that the expansion of specific firefighting targets and mandatory regulations stipulated in the current laws and regulations are necessary.
식품 및 환경, 기타 Single-cathode와 Dual-cathode 미생물연료전지의 탄소원과 질산성질소의 전류발생 특성
장재경 ( Jae Kyung Jang ),이은영 ( Eun Young Lee ),유영선 ( Young Sun Ryou ),이성현 ( Sung Hyoun Lee ),황지환 ( Ji Hwan Hwang ),이형모 ( Hyung Mo Lee ),김종구 ( Jong Goo Kim ),강연구 ( Youn Koo Kang ),김영화 ( Young Hwa Kim ) 한국미생물생명공학회 2011 한국미생물·생명공학회지 Vol.39 No.4
Microbial fuel cells (MFC), devices that use bacteria as a catalyst to generate electricity, can utilize a variety of organic wastes as electron donors. The current generated may differ depending on the organic matter concentrations used, when other conditions, such as oxidant supply, proton transfer, internal resistance and so on, are not limiting factors. In these studies, a single-cathode type MFC (SCMFC) and dual-cathode type MFC (DCMFC) were used to ascertain the current`s improvement through an increase in the contact area between the anode and the cathode compartments, because the cathode reaction is one of the most serious limiting factors in an MFC. Also an MFC was conducted to explore whether an improvement in electricity generation resulted from oxidizing the carbon sources and nitrates. About 250 mg L-1 sodium acetate was fed to an anode compartment with a flow rate of 0.326 mL min-1 by continuous mode. The current generated from the DCMFC was higher than the value produced from MFC with a single cathode. COD removal of dual-cathode MFC was also higher than that of single-cathode MFC. The nitrate didn`t affect current generation at 2 mM, but when 4 and 8 mM nitrate was supplied, the current in the single-cathode and dual-cathode MFC was decreased by 98% from 5.97±0.13 to 0.23±0.03 mA and 8.40±0.23 to 0.20±0.01 mA, respectively. These results demonstrate that increasing of contact area of the anode and cathode can raise current generation by an improvement in the cathode reaction.