도시공원 열환경 실측과 근린주민 의식조사에 따른 체감열 특성 평가

박선영(Park, Sun-Young),주진희(Ju, Jin-Hee),윤용한(Yoon, Young-Han) 한국도시설계학회 2009 도시설계 : 한국도시설계학회지 Vol.10 No.4

본 연구는 청주시에 위치한 도시공원을 대상으로 기온·습도ㆍ풍향ㆍ풍속 및 산소 등 여름철 도시공원이 내포하고 있는 열섬저감효과를 실측하고, 근린주민을 대상으로 설문을 실시하여 체감열에 대한 의식조사를 수행하였다. 이에 열환경 실측과 근린주민 의식조사의 결과를 비교·검토하여 근린주민의 체감의식까지 수용된 실측결과를 바탕으로 실제 공원의 배치 및 식재설계 등 계획에 입안할 수있는 기초자료를 제공함을 목적으로 한다. 연구결과는 다음과 같다. 공원 주변의 기온저감효과와 영향범위, 공원의 쾌적감, 냉량감 및 청정감 등의 항목에서 기온의 실측데이터와 주민의식조사를 비교한 결과, 풍향을 중심으로 풍상측과 풍하측을 구분한 실측 및 의식조사의 결과를 제외하고 공원의 규모가 클수록, 공원으로의 거리가 가까워질수록 거주하는 근린주민은 쾌적감을 느낀다고 응답하였다. 따라서, 도시공원에 대한 열섬현상 완화를 고려해 같은 규모의 공원일 경우, 분산 배치하는 것이 좋으나 공원규모가 클수록 풍하측 기온저감의 영향범위가 넓어지는 경향을 나타내 공원 규모의 확대가 중요함을 보여주고 있다. This study has investigated the air temperature, humidity, wind direction, wind velocity and oxygen in urban parks in Cheong-ju. Heat-island temperature decrease effect in urban parks during summer was measured, and the sensible consciousness of neighborhood residents was investigated through a questionnaire survey. Based on the actual results after comparatively analyzing the measurement of thermal environment and sensible consciousness of neighborhood residents, basic data are presented to elaborate on the urban development plans such as for park placement and planting design. The study result showed that neighborhood residents felt greater comfort sensation when they are closely located to a larger park. When actual temperature data and sensible consciousness of neighborhood residents were compared in terms of temperature decrease effect and extent, comfort sensation, coldness sensation, and cleanliness sensation, similar results were observed in almost all categories except for wind direction which was divided into windward and leeward. Therefore, the significance of this paper is that its results can be used to elaborate realistic and practical park development and management plans in green network and resident’s use of parks.

국립공원 주요 아고산대 상록침엽수(구상나무, 분비나무) 고사현황 조사 : 설악, 덕유, 지리산국립공원을 대상으로

김진원(Jin-Won Kim),전자영(Ja-Young Jeon),박홍철(Hong-Chul Park) 국립공원연구원 2021 국립공원연구지 Vol.12 No.2

우리나라 구상나무 및 분비나무군락은 한라산을 제외하면 백두대간 마루금을 중심으로 국립공원 고지대에 대부분 분포하고 있으며, 구상나무는 지리산과 덕유산국립공원, 분비나무는 설악산국립공원에 비교적 넓은 면적이 분포한다. 따라서 두 수종에 대한 생육상태를 파악하고 모니터링하는 것은 국립공원 자연자원의 보전 측면에서 중요하다. 본 연구에서는 지리산, 덕유산, 설악산국립공원 내 서식 중인 구상나무와 분비나무군락에 대한 수년간의 고사실태를 파악하고자 하였으며, 이를 바탕으로 국립공원 아고산생태계의 과학적 보전 및 관리를 위한 토대를 마련하고자 하였다. 2009년부터 2020년까지 상록침엽수 고사현황을 조사한 결과, 지리산국립공원과 덕유산국립공원의 구상나무 고사 및 쇠퇴현상은 매년 나타나고 있으며, 2014년과 2015년에 상대적으로 높은 고사율을 나타냈다. 설악산국립공원의 분비나무 역시 편차는 있지만 구상나무와 마찬가지로 고사현상이 확인되고 있으며, 특히 관모능선과 설악폭포 지역의 고사현상이 지속되고 있다. 설악산 또한 2012년와 2014년에 상대적으로 사율이 높게 나타났지만 전반적으로 큰 차이는 없는 것으로 판단된다. 특정 연도에 고사율이 상대적으로 높게 나타난 요인으로는 태풍, 가뭄, 홍수, 강풍 등과 같은 기상이벤트에 의한 영향이 작용한 것으로 판단된다. 따라서 본 연구의 결과를 바탕으로 기상이벤트와의 관계성을 파악하는 후속연구가 필요한 것으로 판단되며, 이를 객관적으로 규명하기 위해서는 더욱 장기적인 모니터링 자료가 뒷받침되어야 한다. Excluding Hallasan National Park, Abies koreana and Abies nephrolepis communities are mostly distributed in the high elevation of the National Park on Baekdudaegan mountain. Abies koreana is distributed in Jirisan and Deogyusan National Park, and Abies nephrolepis is distributed in Seoraksan National Park. Therefore, grasping and monitoring the growth status of both species is important in terms of conservation of natural resources in Korea National Parks. In this study, we attempted to find out the mortality of Abies koreana and Abies nephrolepis inhabitant. The mortality and decay of Abies koreana in Jirisan National Park and Deogyusan National Park occur every year, with relatively high mortality rates in 2014 and 2015. Abies nephrolepis in Seoraksan National Park are also different, but the death phenomenon has been confirmed like Abies koreana. In particular, the death phenomena in the Gwanmo Ridge and Seorak Falls continue to occur. In addition, although the mortality rate was relatively high in 2012 and 2014, there is no significant difference overall. As a factor in which the mortality rate was relatively high in a specific year, it is assumed that the influence of meteorological events such as typhoons, droughts, floods, and strong winds. Therefore, based on the results of this study, it is recommended that a follow-up study is needed to grasp the relationship with the meteorological event, and longer-term monitoring data should be supported in order to objectively investigate this assumption.

Carbon reduction and planning strategies for urban parks in Seoul

Jo, Hyun-Kil,Kim, Jin-Young,Park, Hye-Mi Elsevier 2019 Urban forestry & urban greening Vol.41 No.-

<P><B>Abstract</B></P> <P>This study quantified carbon storage and uptake for urban parks in Seoul, the capital of the Republic of Korea. A total of 38 study parks were selected using a systematic random sampling method and all the trees in the parks were field-inventoried. Carbon storage and uptake by the park trees were estimated applying a quantitative model for urban open-grown trees of each species. Mean carbon storage per unit of park area, basal area, and crown cover by the trees was 38.5 ± 3.0 t/ha, 27.3 ± 0.8 kg/100 cm<SUP>2</SUP>, and 7.4 ± 0.4 kg/m<SUP>2</SUP>, respectively. Annual carbon uptake per unit area and cover by the trees averaged 3.5 ± 0.2 t/ha/yr, 2.5 ± 0.1 kg/100 cm<SUP>2</SUP>/yr, and 0.7 ± 0.0 kg/m<SUP>2</SUP>/yr, respectively. The major determinants of the levels of carbon storage and uptake were species, density, sizes, and layering structures of the planted trees. The trees across all urban parks in Seoul were estimated to store 222.3 kt of carbon and to annually sequester 20.2 kt of carbon. The trees in these parks played an important role in annually offsetting carbon emissions from gasoline consumption by approximately 2.3% of the total population of the city. The economic value of the annual carbon uptake, which was $7.1million/yr, equaled 15.1% of the annual maintenance budget of the parks in the city. However, the role of study parks as a source of carbon uptake was limited due to the distribution of large grass and impervious areas, the single-layered structures, and the dominance of small trees. Planning strategies were explored to enhance carbon reduction effects of the parks. They included the expansion of tree planting spaces through the minimization of unnecessary grass and paving areas, the active tree planting in the potential planting spaces, the multi-layered planting grouped with larger trees, and the planting of tree species having satisfactory growth rates. This study puts an emphasis on finding out the present carbon offset levels of urban parks on which information is limited and suggesting a future direction of park planning based on a detailed actual survey.</P>

A Case of Urethral Stent for Recurrent Urethral Stricture and Penile Prosthesis for Erectile Dysfunction

Jung, Gyung-Woo,Song, Young-Jin,Park, Young-Ho,Kwon, Heon-Young,Yoon, Jin-Han 동아대학교의과대학 1992 동아의대학술지 Vol.4 No.1

AN IN-SITU YOUNG’S MODULUS MEASUREMENT TECHNIQUE FOR NUCLEAR POWER PLANTS USING TIME-FREQUENCY ANALYSIS

YOUNG-CHUL CHOI,DOO-BYUNG YOON,JIN-HO PARK,권휴상 한국원자력학회 2009 Nuclear Engineering and Technology Vol.41 No.3

Elastic wave is one of the most useful tools for non-destructive tests in nuclear power plants. Since the elastic properties are indispensable for analyzing the behaviors of elastic waves, they should be predetermined within an acceptable accuracy. Nuclear power plants are exposed to harsh environmental conditions and hence the structures are degraded. It means that the Young’s modulus becomes unreliable and in-situ measurement of Young’s modulus is required from an engineering point of view. Young’s modulus is estimated from the group velocity of propagating waves. Because the flexural wave of a plate is inherently dispersive, the group velocity is not clearly evaluated in temporal signal analysis. In order to overcome such ambiguity in estimation of group velocity, Wigner-Ville distribution as the time-frequency analysis technique was proposed and utilized. To verify the proposed method, experiments for steel and acryl plates were performed with accelerometers. The results show good estimation of the Young’s modulus of two plates.

圓光醫大 附屬 第2病院 神經精神科 患者에 對한 統計的 考察(Ⅱ)

박민철,장광철,김상원,김한주,유미경,김훈,유용진,김현정,박남진,오상우,이귀행,노승호,백영석 圓光大學校 醫科大學 神經精神科學敎室 1992 圓光精神醫學 Vol.8 No.1

본 연구는 1986년 7월 11일부터 1991년 7월 10일까지 원광의대 부속 제2병원 신경정신과에서 의래 및 입원치료를 받았던 6,072명의 환자를 대상으로 병원 역학조사를 실시하고 그 결과를 1차조사 (박민철 등1986)와 비교했다. 1.전체 환자 중 남자가 54.4%로 여자보다 많았고, 이리와 이리 인접지역이 84.0%로 대부분의 지역을 나타났다. 의료보장상태는 보험환자가 57.1%, 의료보호환자21.8%, 일반환자 21.1%였으며 연령별로는 20대 24.6%, 30대 22.8%로 20대 30대가 절반정도를 차지했다. 2.외래환자에서는 신경중성장애가 46.0%로 가장 많고 정동장애, 경련성장애 순이며, 입원환자에서는 정신분열증이 30.5%로 가장 많고 기질성정신장애, 정동장애의 순이었다. 3.남자는 신경증성쟝애(23.4%), 정신분열증, 기질성정신장애 순이고 여자는 신경증성장애(39.9%), 정동장애, 정신분열증의 순이었다. 남자가 여자보다 많은 진단은 알코올정신장애(94.6%), 기질성정신장애, 소아정신장애 순이고, 여자가 남자보다 많은 진단은 정동장애(64.5%), 신경증성장애였다. 4.진단별 연령분포에서 신경증성장에는 30대(25.3%), 20대, 40대 순이고, 정신분열증은 20대(40.5%), 30대, 40대 순이며, 정동장애는 20대, 30대, 50대 순이나 비교적 비슷한 융이었다. 5.진단별 발병연령에서 신경증성장에는 20대, 30대가 절반이고,정신분열증은 20대(51.3%), 10대, 30대 순이며 정동장애는 20대(30.7%), 30대, 50대 순이었다. 진단별 평균 발병연령은 신경증성장애 32.7세, 정동장애 36.1세, 정신분열증 23.6세였다. 6.진단별 이병기간은 2년이상이 신경증성장에 28.3%, 정신분열증 68.5% 정동장애 43.9%인데 전체적으로 41.0%였다. 진단별 평균 이병기간은 정신분열증 73.2개월, 정동장애 45.5개월, 신경증성장애 29.5개월이었다. We examined epidemiologic study of 6,072 patients who visited Wonkwang Neuropsychiatric hospital since July 11 of 1986 until July 10 of 1991 and compared this results with previous study(Park et al 1986). The study revealed as follows:1. Of total patients males visited this hosptial more than females as 57.1%, Most of them(84.0%) resided Iri and neighbouring Iri. In the point of insurance, insured patients, medicaid patients and uninsured patients were 57.1%, 21.8% and 21.1% respectively. On the distribution of age, the twenties, the thirties were 24.6%, 22.8% respectively and twenties and thirties were about half of total patients. 2. Of outpatients neurotic disorder was the most as 46.0%, secondly mood disorder and thirdly convulsive disorder, but of inpatients schizophrenia was the most as 30.5%, secondly organic mental disorder and thirdly mood disorder. 3. Of males neurotic disorder was the most as 23.4%, secondly schizophrenia, and thirdly organic mental disorder, but of females neurotic disorder was the most as 39.9%, secondly mood disorder and thirdly schizophrenia. alcoholic mental disorder(94.6%), organic mental disorder, child mental disorder were mostly found in males,but mood disorder(64.5%) and neurotic disorder were mostly found in females. 4. On the distribution of age neurotic disorder was found the most in the thirties(25.3%), next in the twenties and in the forties, and schizophrenia was found the most in the twenties(40.5%), next in the thirties and in the forties, but mood disorder was found the most in the twenties, next in the thirties and in the forties but revealed similar rates relatively. 5. On the distribution of age of onset neurotic disorder developed nearly half during the twrnties and the thirties, schizophrenia developed mostly during the twenties (51.3%), secondly the teens and thirdly the thirties, but mood disorder developed firstly the twenties(30.7%), secondly the thirties and thirdly the fifties. on the average age of onset of illness neurotic disorder, mood disorder and schizophrenia were 32.7 years, 36.1 years and 23.6 years respectively. 6. On the duration of illness more than two years was 28.3% in neurotic disorder, 68.5% in schizophrenia and 3.9% in mood disorder and on the average duration of illness schizophrenia, mood disorder and neurotic disorder were 73.2 months, 45.5 months and 29.5 months respectively.

Analysis of Genetic Diversity of Korean Wheat Cultivars Using Microsatellite DNA Polymorphisms

Park,Yong-Jin,Cho,Gyu-Taek,Ma,Kyung-Ho,Lee,Sok-Young,Lee,Jung-Ro,Kim,Young-Chang,Cho,Eun-Gi,Kim Chang-Yung,Nam,Jung-Hyun,Rao,V,Ramanatha,Kang,Hee-Kyoung 한국자원식물학회 2004 Plant Resources Vol.7 No.2

Genetic background and phylogenetic relationships among 20 Korean wheat cultivars were assessed using microsatellites after amplifying with 13 SSR primer pairs. Average allele number per primer pair was 3.36. Genetic similarities for every pair of cultivars ranged from 0.42 to 0.97, with 0.69 of overall average. Korean cultivars were divided into two major groups based on microsatellite DNA polymorphisms. Group I consisted of relatively old cultivars developed until 1970s, and group II contained the recent cultivars developed during 1980s and 1990s. Amongst old elite cultivars/lines, ‘Yukseung 3’, ‘Norin 12’ and ‘Norin 72’ contributed most to the genetic background of cultivars belonging to group I, and ‘Norin 4’, ‘Norin 12’, ‘Norin 43’ and ‘Norin 72’ to group II, respectively. The phylogenetic relationship of Korean wheat cultivars was in accordance with the genealogical data of each cultivar. The genetic background of each cultivar was assessed from the point of breeding and germplasm management such as variety identification and duplicated accessions for assisting in developing a system for the registration of new variety based on the molecular characterization in future.

방사선사진의 인덱스-순서 분석을 통한 치아경조직의 탈염화 검출

박동현,박영호,김경숙,박정훈,이기자,최삼진,최용석,황의환,박헌국 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.2

Purpose : The purpose of this study was to develop the radiographic technique for detecting the demineralization which is known as indication of dental caries. Materials and Methods : This technique was based on the comparing of multiple radiographs which was irradiated by multiple X-ray spectra. For the meaningful comparing, the multiple radiographs were reconstructed to the dosimetrically consistent images using a standard material. The difference of resulting images of same target with multiple spectra represents the difference of response of material as regards the spectra. Results : We have found about 10% of demineralization of dental hard tissues particularly in the proximal region through the analyzing of differences. Conclusion : Most intriguing thing in this investigation was that the method to analyze difference shows us to an anatomic structure of dental hard tissues even if absolute values of optical density were excluded during the procedures.

" The Korean Journal of Chemical Engineering " 게재 논문 요약 : Processabilities & Mechanical Properties of the Biodegradable LDPE / Modified Starch Blends

Young Jin Kim,Yong Man Lee,Hyang Mok Lee,O Ok Park 한국화학공학회 1994 NICE Vol.12 No.5

N/A An investigation of the biodegradable polymers based on starch has been accomplished. Starch needs to be modified before blending with low density polyethylene(LDPE) because of its hydrophilicity. Three kinds of modification methods were applied to obtain the compatibility to starch-LDPE blends. The first one was the esterification of the hydroxyl group of starch with acetic anhydride. The second was the copolymerization of actylonitrile and styrene onto starch. The last was the esterification reaction of the hydroxyl group of starch with three kinds of ionomers. The tensile strength, % elongation, Young`s modulus, and shear viscosities of blends of the modified starch and LDPE were examined. Ionomer-treated starch showed better compatibility with LDPE to give better performances than other blends.

Effect of Ionizing Radiation on Rat Tissue: Proteomic and Biochemical Analysis

Park*, Eui‐,Chul,Yoon, Jong‐,Bok,Seong*, Jin‐,Sil,Choi, Kyoung‐,Soo,Kong, Eung‐,Sik,Kim, Yun‐,Jeong,Park, Young‐,Mee,Park, Eun‐,Mi Taylor Francis 2006 Preparative biochemistry & biotechnology Vol.36 No.1

<P>Reactive oxygen species (ROS), generated by ionizing radiation, has been implicated in its effect on living tissues. We confirmed the changes in the oxidative stress markers upon irradiation. We characterized the changes in the proteome profile in rat liver after administering irradiation, and the affected proteins were identified by MALDI-TOF-MS and ESI-MS/MS. The identified proteins represent diverse sets of proteins participating in the cellular metabolism. Our results demonstrated that proteomics analysis is a useful method for characterization of a global proteome change caused by ionizing radiation to unravel the molecular mechanisms involved in the cellular responses to ionizing radiation.</P>