저온 플라즈마 기술을 이용한 황화수소 저감 방안 연구

유지예,박찬진 한국시뮬레이션학회 2017 한국시뮬레이션학회 학술대회집 Vol.2017 No.-

효율적인 관리를 위한 사업장 복합악취 배출허용기준 비교 연구

유지예,박찬진 한국냄새환경학회 2020 실내환경 및 냄새 학회지 Vol.19 No.3

In Korea, odor emission control is carried out at the boundary between the discharge port and the site based on the height of the discharge port, but in Japan and the U.K. a range of characteristics are considered in odor management, including the height, size, and amount of exhaust gas, when managing the acceptance criteria of the discharge port that conforms to the odor concentration standards based on the site boundary. In this study, the permitted concentration of odor in the outlet was studied considering the design conditions of the outlet, in order to manage it based on the distance between the outlet and the residential area. To improve the effectiveness of odor management, Korean odor management measures were reviewed by applying the methods used to calculate odor concentration in Japan and the U.K. Guidelines on effective odor reduction were provided by calculating the permissible odor concentration for each condition based on the flow rate and height of the final outlet to comply with the permissible concentration at regular intervals at the outlet of the factory.

국내외 바이오 플라스틱 규제현황, 인증마크 및 식별 표시 동향

유지예,이소영,유영선 한국포장학회 2018 한국포장학회지 Vol.24 No.3

As global environmental problems become more serious, bio plastic suppliers in developed countries are expected to drive demand for eco friendly packaging materials due to recycling regulations and consumer’s attention. To catch up with this demand, various types of bio plastics have been introduced using plants such as corn and domestic companies are increasingly interested in this. Industrial interest in bio plastics is increasing to solve the recent environmental problems. The critical disadvantages of the weak mechanical strength and expensive product cost were gradually solved by extensive researches. In order to promote the active use of bio plastics, countries around the world are operation certification marks and standard systems. In this article, we have summarized recent trends in domestic and overseas bio plastics regulations, certification marks and identification labels.

저온 플라즈마 기술을 이용한 황화수소 저감 방안 연구

유지예,박찬진 대한산업공학회 2017 대한산업공학회 춘계학술대회논문집 Vol.2017 No.4

저온 플라즈마 기술을 이용한 황화수소 저감 방안 연구

유지예,박찬진 한국경영과학회 2017 한국경영과학회 학술대회논문집 Vol.2017 No.4

악취관리지역 인접 생활권에서의 악취 저감 대책에 대한 연구

박현정,최진용,함정아,정민영,유지예,박찬진 한국냄새환경학회 2014 실내환경 및 냄새 학회지 Vol.13 No.4

The study of odor generation conditions in urban areas which were outside odor controlled(or management) areas were investigated using the air dilution olfactory method and instrumental analysis in Incheon city. From the study the generation of odor from residential sources and industrial sources was different from region to region. Odor intensity was high in industrial regions in the afternoon, but was low in school regions in urban areas. From the analysis, more effective regional policy suggestions to address different kinds of odor problems in urban areas are proposed.

초음파 영상을 이용한 만성 콩팥병의 진단

안유지,예수영 한국방사선학회 2017 한국방사선학회 논문지 Vol.11 No.3

Chronic kidney disease can be treated if it is detected early, but as the disease progresses, it becomes impossible to recover. Finally, renal replacement therapy such as transplantation or dialysis should be used. Ultrasonography is used to diagnose kidney cancer, inflammatory disease, nodular disease, and chronic kidney disease. It is used to identify information about degree of inflammation using information such as kidney size, internal echo characteristics. Currently, the degree of disease in the clinic uses the value of glomerular filtration rate. However, even in ultrasound, changes in the degree of inflammation and disease can be observed. In this study, we used ultrasound images to quantify the changes in brightness, size, cortex, and subclinical changes of the kidney with progression of the disease, and compared them with the glomerular filtration rate used in clinical practice . In 105 cases, we performed 35 cases of normal kidney, 35 cases of early kidney disease, and 35 cases of terminal kidney. The brightness of the cortex of the image was obtained and the difference in brightness between the cortex and the proximal portion was obtained by the slope. The graph of the portion which was not smooth due to the ultrasonic characteristics was used as the function regrass. The size reduction was obtained from the original data. The results were as follows: It was proportional to the glomerular filtration rate. It is considered that the algorithm can be applied to the disease if the algorithm study continues. 만성 콩팥질환은 조기에 발견할 경우 치료가 가능하지만 질병이 진행될수록 회복이 불가능해지며 결국 이식이나 투석 등 신대체요법을 사용하여야 한다. 초음파 검사는 콩팥암, 염증성질환, 결절성 질환, 만성콩팥질환 등을 진단하는 검사 방법으로 콩팥의 크기, 내부 에코의 특성 등의 정보를 이용하여 염증의 정도에 대한 정보를 확인하기 위해서 사용된다. 현재 임상에서 질병의 정도는 사구체 여과율의 수치를 사용한다. 하지만 초음파에서도 염증과 질병의 정도 변화는 관찰이 가능하다. 본 연구에서는 초음파 영상을 컴퓨터 알고리즘을 이용하여 콩팥의 질병이 진행됨에 따라 변화하는 명도와 크기, 겉질과 속질의 불분명해지는 것을 수치로 정량화하여 임상에서 사용되고 있는 사구체여과율과 비교하여 영상이 일치하는지 실험하였다. 전체 영상 105증례에서 정상 콩팥 영상 35증례, 초기 콩팥질환 영상 35증례, 말기 콩팥질환 영상 35증례로 실험하였다. 영상의 겉질의 명도를 구하고 겉질과 신동 부분의 명도차이를 기울기로 구했고, 초음파 특성상 매끄럽지 못한 부분의 그래프는 함수 regrass를 이용하였다. 크기감소는 원본 데이터의 값으로 구하였다. 분석한 결과 영상은 영상의학과 판독과 일치하였고, 사구체 여과율과 비례하였다. 이는 향후 알고리즘 연구가 계속 진행된다면 초음파 영상의 질병에 대한 적용이 가능할 것으로 사료된다.

도시환경 개선을 위한 민원유형별 악취관리 방안 연구

박찬진,유지예 한국냄새환경학회 2020 실내환경 및 냄새 학회지 Vol.19 No.2

The number of complaints of odor in urban area has been increased due to mixed industrial areas of odor-related factories and municipal waste treatment odor-producing facilities located in adjacent residential regions. In this study, the characteristics of odor were reviewed according to two types of complaint from regions in Incheon area. In this study, the characteristics of odor were reviewed in two patterns of odor complaints in Incheon area such as the complaints are maintained high continuously and are increased in recent period. International city with largescale residential areas with the environmental facilities and redevelopment of residential regions with the adjacent industrial complexes and other odor emission sources were analyzed. Based on these characteristics, the odor management measures of major odor generating sources in order to improve urban environment were discussed with reducing odor complaints effectively.

식품, 신선편이 농산물용 저장기간 연장 포장 소재 특성 및 평가

이진규,유지예,김미경,유영선 한국포장학회 2016 한국포장학회지 Vol.22 No.3

Fresh-cut agricultural products provide convenience to consumers. However, quality changes or microbial growth can easily occur due to physical changes such as cutting and peeling etc. during processing. Therefore, efforts have been made to develop a functional packaging for extension of shelf life of fresh-cut agricultural products, food etc., and researches on prolongation of storage period have been actively developed. The shelf life is extended by antimicrobial, far infrared rays, air permeability, anti-fogging, weak current, ethylene gas adsorption or decomposition, gas composition changes such as MA (Modified Atmosphere) or CA (Controlled Atmosphere). The method of extending the shelf life by various complex factors. This paper based on the published literature to extend the shelf life of fresh-cut agricultural products, food etc., The paper has summarized the storage period extension packing method, packaging material for shelf life extension and comprehensive evaluation method.

사과나무에서 가지검은마름병 억제를 위한 효율적 가지치기

한규석,유지강,이한별,오창식,예미지,이종호,박덕환 한국식물병리학회 2016 식물병연구 Vol.22 No.4

Black shoot blight disease caused by Erwinia pyrifoliae have damaged economic loss to apple and pear growers until now since it was firstly reported in 1995 in Korea. This study was performed to reduce economic loss by mandatory eradication of all infected trees in case of more 10% disease incidence per orchard as official control. It also aims to set up effective management protocol for this disease by examining how far bacterial pathogen is present from the border of symptomatic and asymptomatic regions in infected apple twigs. Colony-PCR using isolated bacterial cells instead of genomic DNA was used to identify bacterial pathogen, EpSPF/EpSPR primer designed in enterobacterial repetitive intergenic consensus (ERIC) region was selected as specific for E. pyrifoliae. As results of monitoring of this disease during April to October in 2014–2015 by colony-PCR, occurrence of this disease was frequent from mid-May to early-July, when daily average temperature was around 25oC. Moreover, bacterial cells were continuously detected only in symptomatic regions and also asymptomatic regions of less than 20 cm from symptomatic regions. Therefore, we concluded that pruning of infected twigs at the region of more than 20 cm from symptomatic regions might be effective to manage black shoot blight disease in apple trees.