http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정수장 슬러지 소결물을 이용한 암모늄 이온의 제거 연구
李辰河 동남보건대학 2002 論文集-東南保健大學 Vol.20 No.1
In this paper, as a method for recycling sludge from water purification plant, it was studied whether the removal of ammonium ion in waste water with sintered material which is made of sludge from water treatment plant was possible or not. In order to do this, the sludge sintered with 800℃ was put into the waste contained ammonium ion and then the changed concentrations of ammonium ion were measured by using ion-selective electrode. In the results, it was found that the removal efficiency of ammonium ion was not remarkably changed according to the sintering time and the removed amount of ammonium ion according to the input amount of the sintered material was increased at a fixed rate. But additional studies for a completely commercial use is demanded.
이진하,Eunsuk Ahn 한국치위생과학회 2019 치위생과학회지 Vol.19 No.1
Background: The health of the economically active population contributes to increased corporate productivity by reducing the productivity loss caused by disease and increasing job efficiency, which in turn is a national benefit. Since the economically active population is a concept encompassing workers and a source of economic development for a country, that population’s health should be treated with importance not only from a personal standpoint but also at a national level.Methods: In this study, data of 11,007 adults aged 20 years and older who participate in economic activities were analyzed in the five-year Korea Health Panel Study from 2010 to 2014 including the number of dental visits and dental medical expenses. Results: Factors related to “gender,” “education level,” “age,” “duty category,” “income level,” “employment type,” “national health insurance,” and “chronic disease status” of the economically active population are affected in relation to the number of visits and dental medical expenses. The number of dental visits increased with higher education levels (p<0.001), and the number of visits to the dentist increased with older age (p<0.001). Dental medical expenses were 91,806 Korean won (KRW) more for “white-collar workers” than for “blue-collar workers” (p<0.03), and 127,674 KRW more for “regular workers” than for “atypical workers” (p<0.02).Conclusion: When it is necessary to improve policies to enhance the efficiency of the distribution of health and medical resources in the overall balance of the dental health sector, we should try to identify various factors of oral health disorder due to income inequality among the classes according to the country’s employment type in order to find ways to reduce the health gap among the social classes.
이진하,조양환,조봉연,라문진,김선영,강일준,한경찬,이옥환 한국식품위생안전성학회 2016 한국식품위생안전성학회지 Vol.31 No.4
This study was assessed stability of ethanolic extract from Cirsium setidens Nakai that will be applied for development of functional foods and ingredients. We evaluated pectolinarin content, total phenol content and antioxidant activity (DPPH radical scavenging activity and FRAP assay) of ethanolic extract from C. setidens Nakai against various temperature(4, 25 and 50℃) and pH(4.0, 7.0 and 10.0). Our results show that the pectolinarin and total phenol contents in ethanolic extract from Cirsium setidens Nakai slightly reduced during the storage periods. Moreover, the DPPH radical scavenging activity at 4℃ was higher than those of other temperature. Pectolinarin content, total phenol content and DPPH radical scavenging activity of ethanolic extract from Cirsium setidens Nakai at acidic (pH 4.0) and neutral (pH 7.0) pH ranges were higher than at alkaline pH ranges. These results indicate that the optimum storage condition of C. setidens Nakai ethanol extract are temperature 4℃ and pH 4.0-7.0 ranges.
이진하,황경철,최재구,조기철,여현구 동남보건대학 2004 論文集-東南保健大學 Vol.22 No.2
We polled the consciousness and the public opinion in the citizens of Suwon about environmental preservation in order to make an alternative plan for effective environmental matter solution and apply a reference for establishment of environmental policy course of Suwon city. The results show that there are many people who think it necessary to solve the problems of air and water pollution and solid wastes. They also think that a local autonomous entity hasn't made every to improve environmental protection and to control the facilities emitting pollutants.
이진하,황경철,조기철 東南保健大學 2005 論文集-東南保健大學 Vol.23 No.2
There has recently become one of the major concerns which expressed the general public and regulation agencies concerning health risks associated with indoor air pollution in Korea.