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.

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

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>

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.

미백보조광 조사가 치아미백의 효과에 미치는 영향

박종현,신혜진,박덕영,박세희,김진우,조경모 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.2

The aim of this study was to evaluate the influence of light energy on the tooth whitening effect of bleaching agent in vitro. Extracted human mandibular molars were sectioned to 2 fragments(mesial distal) and lingual portions of crown were used in this study. All specimens were stained using a red wine for 24 hours and immersed in artificial saliva. Specimens divided into four groups, group 1 and 2 light-activated by LumaCool (LED, LumaLite. Inc. Spring Valley, USA) group 3 and 4 light-activated by FlipoWhite2 (Plasma acr lamp, Lokki Australia) Group 1 and 3 bleached with LumaWhite(LumaLite, Inc.. Spring Valley USA), group 2 and 4 bleached with Polaoffice(SDI, Victoria, Australia). Bleaching treatment Performed during 10 minutes every 24 hours and repeated 6 times. During bleaching treatment, distal fragments was light-activated(L) but mesial fragments was not(NL). Shade assessment employed before and after bleaching treatment using spectrophotemeter. The results of the change in shade was compared and analysed between NL and L by using paired-sample T test with 95 % level of confidence. There were no significant differences between NL and L with a few exceptions. In group 2, a^(*) value more change in L, in group 3, b^(*) value more change in L in gioup 4, a(*) value less change in L. After bleaching L^(*) value and ΔE increased in all groups and the value of a^(*) and b^(*) decreased in all groups. Within the limitation of this test conditions, the results of this study indicate that the light energy has no obvious improving impact on the tooth whitening effect of a bleaching agent. 이 연구의 목적은 미백제의 치아미백효과에 미백보조광의 빛에너지의 영향을 평가하는 것이다. 발거된 하악 대구치 치관의 설면을 실험에 사용하였고, 하나의 대구치에서 근심과 원심으로 구분되는 2개의 치아 절편을 얻었다. 모든 시편을 24시간동안 적포도주에 보관하여 착색을 유도하고, 인공타액에 보관하였다. 시편들은 미백광조사기와 미백 powder의 종류에 따라 4개의 실험군으로 나뉘었으며, 실험군은 다음과 같다. Group 1: LumaCool로 광조사를 시행, LumaWhite를 사용 Group 2: LumaCool로 광조사를 시행, Polaoffice를 사용 Group 3: FlipoWhite 2로 광조사를 시행, LumaWhite를 사용 Group 4: FlipoWhite 2로 광조사를 시행, Polaoffice를 사용 미백처치는 10분간 매 24시간마다 총 6회 시행하였고, 미백처치시 동일한 치아에서 얻어진 두 개의 시편 중 원심시편에는 미백광조사를 시행한 반면, 근심시편에는 미백광조사를 시행하지 않았다. 색조의 평가는 spectrophotometer를 사용하여 매 미백처지 전과 후에 시행하였고, 근심측과 원심측에서 얻어진 색조 변화 차이를 paired-sample T test를 이용하여 95%의 신뢰수준으로 비교하였다. 미백처치 후 모든 실험군에서 L^(*) value와 ΔE의 증가와 a^(*) value와 b^(*) value의 감소가 관찰되었다. Group 2 원심절편의 a^(*) value와 group 3 원심절편의 b^(*) value에서의 더 큰 변화와 group 4의 원심절편에서의 a^(*) value가 좀 더 적은 변화를 제외하고, 모든 실험군에서 근심절편과 원심절편사이에서 색조변화의 차이는 통계적 유의성을 보이지 않았다. 이상의 연구 결과에서 미백보조광의 빛에너지는 미백제의 치아미백 효과를 증가시키는 것에 명백한 영향을 주지 않는 것으로 평가되었다.

내시경적 조임근절개술후에 발생한 췌십이지장 가성동맥류 1예

박수영,김윤정,박진한,전현수,박시형,이영진,이은지,김지현 仁濟大學校 白病院 2010 仁濟醫學 Vol.31 No.-

We reported a case of pancreatic pseudoaneurysm, involving pancreaticoduodenal artery, developed after endoscopic retrograde cholangiopancreatography(ERCP) with endoscopic sphinterotomy. A 54 year old woman was transferred to our hospital due to sustained hematochezia and hypovolemia. A week before admission, she underwent ERCP with endoscopic sphinterotomy for acute cholangitis in local clinics. She developed abdominal pain and hematochezia at 12 hours after the procedures. A post procedure contrast enhanced computed tomography of abdomen demonstrated a pseudoaneurysm in inferior portion of pancreatic head. This was not present on the pre procedure contrast enhanced computed tomography of abdomen and was thought to arise from the pancreaticoduodenal artery as a complication of the pre sphincterotomy. She was brought to our emergency room in a state of hypovolemia. A upper endoscopy showed active bleeding from ampula of vater. An celiac angiography demonstrated pancreatic pseudoaneurysm involving inferior pancreaticoduodenal artery and selective coil embolization of was performed.

모체 Thyroxine 투여가 태아알코올효과를 가진 흰쥐 대뇌겉질 및 해마에서 NPY함유 신경세포의 생후 발달에 미치는 영향

김복,박상기,박영란,김종중,문정석,김주수,문영민,현영식,천관영,정윤영 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.2

Background and Objectives: Maternal alcohol abuse is considered to be one of the most prominent cause of neurobiological malformations in the postnatal and adult life of the offspring. In this study, we investigated the effects of maternal alcohol drinking on the postnatal development of NPY-containing neuron, and, the influence of thyroxine treatment on the cerebral cortex and hippocampus of pups of alcohol abused mother. Materials and Method: Time-pregnant rats were divided into three groups. Alcohol-fed group A received 35 calories of liquid alcohol diet daily from gestation day 6; control pair-fed group B was fed a liquid diet in dextrin replaced alcohol isocalorically: alcohol + T4 group C received 35 calories liquid alcohol diet and exogenous thyroxine subcutaneously. Results: Group C showed prominent NPY immunoreactivity in the cerebral cortex compared to group A and B at P7. In group C, NPY-containing neurons were widely distributed in the all layers of cerebral cortex after P14. Besides, numerical decrease of NPY-containing neuron as age increases was not found in group C. However, the decrease of NPY-containing neuron was clearly observed in group A compared to group C after P14. In hippocampus, group Band C were appeared similar patterns after P7. Additionally, in group C, NPY immunoreactivity was prominently appeared in CA2 and CA3 at P14 as compared to group B. Conclusions: The present results showed the increase of intensity and number of NPY-containing neurons in cerebral cortex and hippocampus of pups of exogenous T₄ supplemented alcohol-exposed dams as compared to control pair-fed and alcohol-exposed pups at P7. It presumably suggest that NPY-containing neurons might be regulated by the early postnatal growth stimulatory effect of the exogenously supplemented T₄. Therefore, the increase of NPY synthesis caused by maternal administration of exogenous thyroxine may ameliorate fetal alcohol effect, one of the ill effects as a result of the dysthyroid state following maternal alcohol abuse.

복합레진의 지연충전이 미세인장 결합강도에 미치는 영향

박현식,조영곤,박병철,김종욱,최희영,김종진,진철희,유상훈,기영재 大韓齒科保存學會 2004 Restorative Dentistry & Endodontics Vol.29 No.3

The purpose of this study was to evaluate the effect of immediate or delayed composite resin filling on dentinal microtensile bond strength (μTBS) after applied the adhesive. The coronal dentin of human third molars was exposed. Single-Bond or One-Step was applied on the dentin surfaces, and composite resin were constructed immediately (group 1) or 5 min., 10 min., 15 min., 20 min. and 30 min. (groups 2-6) after an adhesive was applied. The specimens were sectioned and made bar-shaped. Each surface area of them was about l ㎟. The RBS test was performed by EZ test. The results were analysed by One-way ANOVA and Tukey's test at 95 % significance level. The results suggested that the μTBS of Single-Bond to dentin was decreased when the composite resin was constructed 20 min. and 30 min. after Single-Bond was applied. But the μTBS of One-Step was not affected by delayed composite resin filling.

이면성 및 도플러 심초음파도를 이용하여 진단한 선천성 거대 좌회선지-좌심실 관동맥루

진승원,박준철,이영중,유병현,박현옥,김용주,윤호중,김재형,홍순조,최규보,권종범,원용순,박건 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.4