하수처리장 적용을 위한Semi-카플란 수차가 장착된 마이크로수력발전 시스템

채규정(Kyu Jung Chae),김동수(Dong Soo Kim),천경호(Kyung Ho Cheon),김원경(Won Kyoung Kim),김정연(Jung Yeon Kim),이철형(Chul Hyung Lee),박완순(Wan Soon Park) 大韓環境工學會 2013 대한환경공학회지 Vol.35 No.5

소수력발전은 하수처리장 에너지 자립을 위한 효과적인 대안이다. 본 연구는 유량변동이 크고 유효낙차가 낮은 중소형하수처리장(기흥레스피아) 적용을 위해 피치조절형 세미카플란(semi-kaplan) 마이크로수력발전의 적용 타당성을 평가하였다. 가변피치 semi-kaplan 수차는 유량조절을 위한 가이드베인은 생략하고 피치조절형 런너를 장착하여 기계적 결함은 줄이면서 유량변동이 큰 처리장에 특화된 기술이다. 마이크로수력발전 시스템은 설계조건(유량 0.35 m3/s, 유효낙차 4.7 m)에서 90.2%의 수차효율 달성이 가능하였고 발전용량은 13.4 kW로 산정되었다. 설비가동률 74%로 가동 시 연간 약 86.8 MWh 에너지 생산을 통해 2.1%의 에너지 자립이 가능하고 이는 연간 49톤의 CO₂ 감축효과와 맞먹는다. 경제성 평가결과 초기 건설공사비가 200,000,000원 이하인 경우에는 내부수익률은 6.1%, 순현가는 15,539,000원, 편익-비용률은 1.08, 투자회수년은 15.5년으로 경제성이 충분한 것으로 나타났다. Small scale hydropower is one of most attractive and cost-effective energy technologies for installation within sewage treatment plants. This study was conducted to evaluate the potential of a semi-kaplan micro-hydropower (MHP) system for application to sewage treatment plants with high flow fluctuations and a low head. The semi-kaplan MHP is equipped with an adjustable runner blade, and is without a guide vane, so as to reduce the incidence of mechanical problems. A MHP rating 13.4 kWp with a semi-kaplan turbine has been considered for Kiheung Respia sewage treatment plant, and this installation is estimated to generate 86.8 MWh of electricity annually, which is enough to supply electricity to over 25 households, and equivalent to an annual reduction of 49 ton CO₂. The semi-kaplan turbine showed a 90.2% energy conversion efficiency at the design flow rate of 0.35 m3/s and net head of 4.7 m, and was adaptable to a wide range of flow fluctuations. Through the MHP operation, approximately 2.1% of total electricity demand of Kiheung Respia sewage treatment plant will be achievable. Based on financial analysis, an exploiting MHP is considered economically acceptable with an internal rate of return of 6.1%, net present value of 15,539,000 Korean Won, benefit- cost ratio of 1.08, and payback year of 15.5, respectively, if initial investment cost is 200,000,000 Korean Won.

Identification and characterization of Metarhizium majus isolated from the edible insect Protaetia brevitarsis in Korea

Kwak Kyu‐Won,Aktaruzzaman Md.,Kim Eunsun,Kim Sun Young,Hong Seung‐Beom,Park Ji Yeong,Park Kwanho,Koo Bonwoo,Kim Yong‐Soon 한국곤충학회 2021 Entomological Research Vol.51 No.12

Edible insects are considered novel protein sources, and the edible insect breeding industry is growing rapidly. However, fungal pathogens are a major threat to this industry, and appropriate identification of causative agents is important for the development of antifungal agents. In 2019, strains of the fungal pathogen Metarhizium were isolated from infected second and third instar larvae of the economically important edible insect Protaetia brevitarsis, which were collected from separate farms in Gimhae-si, Gyeongsangnam-do, Korea. Based on morphological characteristics and multilocus phylogenetic analysis of the internal transcribed spacer region, and 50-region of gene encoding the 1-α elongation factor, the fungal strains were identified as Metarhizium majus. Here, we report the detailed phylogenetic characteristics and morphological description of this species, which is prevalent in Korea. Identification of the principal disease-causing agent can help develop disease prevention and antifungal strategies for application in edible insect-rearing farms.

경관형용사 분석법을 활용한 국립공원 마을 유형별 경관 선호도에 관한 연구

심규원(Sim, Kyu-Won),박헌춘(Park, Heon-Choon),남승민(Nam, Seung-Min) 한국산림휴양복지학회 2021 한국산림휴양학회지 Vol.25 No.2

본 연구의 목적은 경관형용사 분석법을 활용하여 국립공원 내에 있는 마을의 유형별로 경관 선호도에 영향을 주는 경관 이미지를 규명하고자 하였다. 분석 결과, 경관 선호도에 영향을 주는 경관 요인은 마을 유형별로 차이가 있으며, 마을 경관 디자인 가이드라인 수립 시 고려해야할 경관 이미지는 아래와 같다. 첫째, 농촌형 마을의 전원성에만 국한된 형용사는 ‘자연스러운’, ‘풍요로운’, ‘전통적인’, ‘정적인’으로 산촌형 및 어촌형 마을보다는 가장 일반적이고 전통적인 이미지의 고정관념을 지니고 있다고 볼 수 있다. 둘째, 어촌형 마을의 전원성 중 가장 큰 차이를 보이는 부분은 어촌형 마을에만 도출된 형용사 ‘자유로운’이다. 셋째, 산촌형 마을의 형용사적 차이를 보이는 항목은 일반적으로 산의 특성을 반영하는 ‘울창한’, ‘깊은’ 두 단어이다. 도출된 결과를 바탕으로 국립공원 내 존치되어 있는 마을의 정주여건 개선과 공원자원으로서 활용성 제고하고, 공원 내 주민의 삶의 질 향상과 공원 내 마을 이미지를 개선하는데 활용할 수 있을 것이다. The purpose of this study was to identify landscape images that affect landscape preferences by type of village in the national park by using the landscape adjective analysis. As a result of the analysis, the landscape factors that affect landscape preferences vary by village type, and the landscape image to consider when establishing the village landscape design guidelines is as follows. First, adjectives limited to the rural village’s rural originality are ‘natural’, ‘rich’, ‘traditional’ and ‘static’, which have the most common and traditional image stereotypes rather than mountain and seaside villages. Second, the biggest difference among the rural characteristics of seaside villages is the adjective‘free’derived only from this village. Third, the two words that generally reflect the characteristics of the mountain village are ‘dense’ and ‘deep’. Based on the results, it will be able to improve the residential conditions of villages in the national park and improve their utilization as park resources, the quality of life in the park, and the village image in the park.

백서와 기니픽의 대뇌피질에서 Opioid Kappa 수용체의 특성에 관한 연구

김기원(Kee-Won Kim),노혜원(Hye-Won Rho),김형일(Hyoung-Il Kim),은재순(Jae-Soon Eun),소수미(Soo-Mi Soh),조규박(Kyu-Park Cho) 대한약리학회 1994 대한약리학잡지 Vol.30 No.2

In this study, we tested the influences of several κ opioid ligands on the [³H]diprenorphine binding in rat and guinea pig cortex membrane preparations. Using paradigm to block μ and δ opioid receptors with DAMGO(1μM) and DPDPE(1μM), [³H]diprenorphine labeled κ sites. Competition analysis in both rat and guinea pig cortex has shown a single population of [³H]diprenorphine binding site with different Kd values, respectively. There is a significant difference in Ki values of (-) WIN44441 and (+)WIN44441 in both rat and guinea pig cortex. Bremazocine, (-)ethylketocyclazocine, (-)cyclazocine, nor-binaltorphimine effectively inhibited the [³H]diprenorphine binding with different Ki values in rat and guinea pig cortex. U-69,593, U-50,488H and dynorphine-A (1-8) did not inhibit the [³H]diprenorphine binding in rat but in guinea pig cortex. Nor-binaltorphimine was a ligand discriminate the κ₁, and κ₂ receptor most effectively. We, also, examined the influence of Na ion and GTPγS, a nonhydrolyzable guanine nucleotide analog, on the inhibition of [³H]diprenorphine binding by diprenorphine, (-)ethyl-ketocyclazocine, U-69,593 and bremazocine. By the replacement of NaCl with N-methy-D-glucamine or addition of GTPγS, Ki values of diprenorpnine were not changed and that of ethylketocyclazocine were changed significantly in both rat and guinea pig cortex. The Ki value of bremazocine was decreased by removal of Na ion, and increased by GTPγS, however, was not changed by any one of either. These results suggest that there are 2 kinds of subtypes of κ opioid receptor, κ₁, and κ₂, showing different Ki values for various κ opioid ligands, also, bremazocine possess the antagonistic property at κ₂ site which is dominant subtype of K receptor in rat cortex.

심장혈관용 약물코팅풍선카테터의 개발 동향

박정훈 ( Junghun Park ),조원일 ( Won-il Jo ),변대흥 ( Dae-heung Byeon ),강소영 ( So Young Kang ),남충현 ( Choong-hyun Nam ),서경우 ( Kyoung-woo Seo ),박준규 ( Jun-kyu Park ) 한국공업화학회 2022 공업화학 Vol.33 No.5

급격한 고령화 사회로의 진입과 서구화된 식습관에 의해 협심증, 심근경색증, 고혈압 등에 의한 심장질환자의 수가 5년간 10만명 이상 증가했다. 심장질환은 지난 8년간 꾸준히 국내 사망원인 2위를 기록 중이며, 이로 인해 연간 소모되는 의료비는 6조원에 달한다. 증가한 환자와 함께 다양한 치료법이 제시되고 있는 가운데, 현재 보편화 된 관상동맥 중재시술 중 스텐트 삽입술의 단점인 재협착이나 장기간 이중항혈소판제 복용으로 인한 출혈의 위험 증가 등의 문제점을 보완하기 위해 약물코팅풍선카테터가 개발되어 점차 상용화되고 있는데, 국내에선 2010년 ‘SeQuent Please^Ⓡ (비브라운코리아)’라는 제품이 처음 출시되면서 약물코팅풍선카테터를 사용한 시술이 시작되었고, 이후 2012년 보험급여가 적용되면서 그 사용량이 본격적으로 늘어났다. 약물코팅풍선치료는 국내뿐만 아니라 전 세계적으로 사용이 증가하고 있는데, 특히 일본을 포함한 아시아태평양 지역에서 그 사용량이 급격히 증가하고 있다. 현재까지 국산 제품의 수요가 증가하고 있는 상황이며 향후, 동물시험 및 임상시험에서의 성능이 입증된다면 위험성이 높은 스텐트 삽입술에 비해 효과적인 시술이 될 것이라 예상한다. As a result of the rapid entry into an aging society and westernized eating habits, the number of heart disease patients caused by angina pectoris, myocardial infarction, and high blood pressure has increased by more than 100,000 over five years. Heart disease has consistently ranked second in the cause of death in Korea over the past eight years, and medical expenses consumed annually reach 6 trillion won. While various treatments are being proposed for more patients, drug-coated balloon catheters have been developed and gradually commercialized to solve the disadvantages of stent implantation such as restenosis and increased risk of bleeding due to long-term double antiplatelet medication. In Korea, it began to use a drug-coated balloon catheter with the first release of it called “SeQuent Please^Ⓡ (Bibrown Korea)” in 2010. Its demand increased gradually as insurance benefits were applied in 2012. Drug-coated balloon angioplasty is increasing in use not only in Korea but also around the world, especially in the Asia-Pacific region, including Japan. Until now, the demand for domestic products is increasing, and if the efficiency in vivo and clinical trials is proven in the future, it is expected to be an effective procedure compared to high-risk stent implantation.

Antiadhesive effect and safety of oxidized regenerated cellulose after thyroidectomy

Kyoung Sik Park,Kyu Eun Lee,Do Hoon Ku,Su-Jin Kim,Won Seo Park2,Hoon Yub Kim3,,Mi Ra Kwon1,Yeo-Kyu Youn1 대한외과학회 2013 Annals of Surgical Treatment and Research(ASRT) Vol.84 No.6

Purpose: To evaluate the antiadhesive effects and safety of an oxidized regenerated cellulose (Interceed) after thyroidectomy. Methods: Seventy-six thyroidectomized patients were prospectively randomized into two groups with regard to the use of Interceed. We evaluated each group for their adhesive symptoms using four subjective and four objective items at the 2nd week, 3rd and 6th month after thyroidectomy. All patients were examined for vocal cord motility by indirect laryngoscope at each period. Results: Total adhesion scores at each postoperative follow-up period decreased with time, but were not significantly different in each group. The median score for swallowing discomfort for liquid was significantly lower in the Interceed group than in the control group 2 weeks after surgery. In addition, the severity of skin adhesion to the trachea was reduced in the Interceed group compared with the control group 6 months after surgery. During the study, there were no adverse effects or significant differences in postoperative complications between the groups. Conclusion: Interceed appeared to be safe and effective in improving neck discomfort at early postoperative periods and preventing skin adhesion to the trachea 6 months after thyroidectomy.

Notes on bird species newly recorded in Korea

Kim, Hwa-Jung,Kim, Dong-Won,Hur, Wee-Haeng,Jang, Byoungsoon,Lee, Yun-Kyung,Kwon, In-Ki,Park, Jong-Hyun,Park, Jong-Gil,Kang, Chang-Wan,Kim, Eun-Mi,Choi, Soon-Kyoo,Kim, Han-Kyu The National Institute of Biological Resources 2020 Journal of species research Vol.9 No.4

A total of 527 species of birds have been recorded in Korea. We summarize the records of three genera and six species that have been newly reported in Korea, discovered through the avian monitoring programs carried out by The National Institute of Biological Resources from 2013 to 2016. These six newly recorded species are; Ring-necked Duck (Aythya collaris), Lesser Scaup (Aythya affinis), Bufflehead (Bucephala albeola), Black-winged Kite (Elanus caeruleus), Mongolian Lark (Melanocorypha mongolica) and Crested Myna (Acridotheres cristatellus). One Ring-necked Duck was observed on March 23, 2014 in Jungrangcheon Stream. One male Lesser Scaup was recorded on February 24, 2014 in Gyeongpoho Lagoon. A male bufflehead was first seen in Yeongrangho Lagoon on January 26, 2013. The Black-winged Kite was first observed on January 23, 2013 at the Gangseo Wetland Ecological Park. One Mongolian Lark was also recorded on May 11, 2016 and May 12, 2017 in Marado Island. The Crested Myna was first observed on April 20, 2016 in Seomando, Island.

여름철 계룡산국립공원 탐방로의 열쾌적성 및 어메니티 관리 연구

안시옥(Siok An),송도윤(Doyun Song),정다워(Dawou Joung),박범진(Bum-Jin Park),심규원(Kyu-Won Sim),박준효(Jun-Hyo Park) 국립공원연구원 2022 국립공원연구지 Vol.13 No.2

본 연구는 산악환경의 기상 특징과 계룡산국립공원 탐방로의 열쾌적성을 파악하고 열쾌적성이 높은 활동 시간 정보, 활동 공간 정보, 활동량 정보를 제공하기 위해 시행되었다. 탐방로의 열쾌적성 분석을 위해 여름철 도심 기온, 국립공원 방재기상관측장비(AWS, Automatic Weather System), 탐방로인 숲길의 평균 기온을 비교하였다. 또한, 계룡산 국립공원의 주요 탐방로 4개 구간의 미기후 요소와 수관울폐도 측정을 위해 총 240개 지점을 조사 후 열쾌적성을 파악 하였다. 도심과 국립공원AWS, 탐방로의 평균 기온을 비교하였을 때, 도심, 갑사AWS, 동학사AWS, 갑사 탐방로, 동학사 탐방로 순으로 평균 기온이 높게 나타났다. 이 결과, 탐방객이 직접 체감하는 탐방로의 열쾌적성을 고려해야 함을 의미한다. 주요 탐방로 4개 구간 조사 결과, 평균 수관울폐도는 동학사~남매탑 구간, 동학사~관음봉 구간, 갑사~연천봉 구간, 갑사~금잔디고개 구간 순으로 높았다. PMV(예상평균온열감)는 활동량이 2.8MET 일 때, 갑사~금잔디고개 구간, 갑사~연천봉 구간, 동학사~남매탑, 동학사~관음봉구간 순으로 높았다. 조사를 통하여, 열쾌적성이 높은 시간 정보, 공간 정보, 활동량 정보를 제시할 수 있었다. 탐방로의 열쾌적성 특성을 파악하여, 탐방로의 어메니티를 높일 수 있는 숲길 관리 방안의 기초를 마련하고자 한다. This study was conducted to understand the weather characteristics of the mountain environment and the thermal comfort of Gyeryongsan National Park trail and to provide information on activity time, activity space, and activity amount. For the analysis of the thermal comfort of the trail, the temperature of the city center in summer, the average temperature of the National Park Disaster Prevention Weather System (AWS), and the trail. Also, Microclimate elements and canopy closure were also measured in four major trails in Gyeryongsan National Park. After investigating a total of 240 points, thermal comfort was identified. When comparing the average temperature of the city center, National Park AWS, and trail, the average temperature was higher in the order of the city center, Gabsa AWS, Donghaksa AWS, Gabsa Trail, and Donghaksa Trail. As a result, it means that the thermal pleasure experienced by visitors should be considered. According to a survey of four major trails, the average canopy closure is Donghaksa~nammaetop route was high in the order of Donghaksa~Gwaneumbong route, Gabsa~Yeoncheonbong route and Gabsa~Geumjandigogae route. When PMV(Predicted Mean Vote) is 2.8MET, The PMV was highter in the order of Gabsa~Geumjandigogae route, Gabsa~ Yeoncheonbong route, Donghaksa~nammaetop route, Donghaksa~Gwaneumbong route. Through the survey, time information, spatial information, and activity information with high thermal comfort could be presented. By grasping the thermal comfort characteristics of the trail, we intend to lay the foundation for forest trail management measures that can increase the amenity of the trail.

국립공원 내 공중화장실에 대한 탐방객 인식에 관한 연구 : 지리산국립공원을 중심으로

이호(Ho Lee),이승록(Seung-Rok Lee),박기현(Ki-Hyun Park),박은희(Eun-Hee Park),차진열(Jin-Yeol Cha),심규원(Kyu-Won Sim),강동원(Dong-Won Gang) 국립공원연구원 2011 국립공원연구지 Vol.2 No.1

본 연구는 공원 내 공중화장실에 대한 탐방객의 인식이 만족도에 미치는 영향을 규명하고자 수행하였다. 현지 설문조사는 지리산국립공원의 성삼재와 중산리 일원을 방문한 탐방객 292명을 대상으로 이루어졌다. 분석결과, 공중화장실의 관리상태, 외관, 디자인 요인 모두 탐방객의 공중화장실 이용 만족에 영향을 주는 것으로 분석되었으며, 그 중 관리상태가 가장 큰 영향을 주는 것으로 나타났다. 따라서 탐방객의 인식과 만족을 향상시키기 위해서는 공중화장실의 청결한 관리 및 유지, 악취 방지, 소모품의 원활한 공급 등에 우선순위를 두어 집중적으로 관리할 필요가 있는 것으로 나타났다. This study conducts to investigate the relationship between visitors’ perception and satisfaction. Data of 292 visitors were collected from Seongsamjae and Jungsanri in Jirisan National Park. The results showed that maintenance, outlook and design of public toilet are positively related to visitors’ satisfaction. One of the major research findings is that the maintenance of public toilet most affects visitors’ satisfaction. Therefore, the park managers need to put great emphasis on the cleanliness and maintenance, preventing stinks, consumable supplies of public toilet in order to enhance visitors’ perception and satisfaction.

우리나라 노인여성의 골다공증성 척추골절로 인한 경제적 부담 추계

강혜영,강대룡,장영화,박성은,최원정,문성환,양규현,Kang, Hye-Young,Kang, Dae-Ryong,Jang, Young-Hwa,Park, Sung-Eun,Choi, Won-Jung,Moon, Seong-Hwan,Yang, Kyu-Hyun 대한예방의학회 2008 예방의학회지 Vol.41 No.5

Objectives : To estimate the economic burden of osteoporotic vertebral fracture (VF) from a societal perspective. Methods : From 2002 to 2004, we identified all National Health Insurance claims records for women ${\geq}50$ years old with a diagnosis of VF. The first 6-months was defined as a "clearance period," such that patients were considered as incident cases if their first claim of fracture was recorded after June 30, 2002. We only included patients with ${\geq}$ one claim of a diagnosis of, or prescription for, osteoporosis over 3 years. For each patient, we cumulated the claims amount for the first visit and for the follow-up treatments for 1 year. The hospital charge data from 4 hospitals were investigated to measure the proportion of the non-covered services. Face-to-face interviews were conducted with 106 patients from the 4 study sites to measure the out-of-pocket spending outside of hospitals. Results : During 2.5 years, 131,453 VF patients were identified. The patients had an average of 3.38 visits, 0.40 admissions and 6.36 inpatient days. The per capita cost was 1,909,690 Won: 71.5% for direct medical costs, 20.6% for direct non-medical costs and 7.9% for indirect costs. The per capita cost increased with increasing age: 1,848,078 Won for those aged 50-64, 2,084,846 Won for 65-74, 2,129,530 Won for 75-84and 2,121,492 Won for those above 84. Conclusions : Exploring the economic burden of osteoporotic VF is expected to motivate to adopt effective treatment options for osteoporosis in order to prevent the incidence of fracture and the consequent costs.