RCP 8.5 기후변화 시나리오에 따른 소나무림과 굴참나무림의 산림 탄소 동태 변화 추정 연구

이종열 ( Jong Yeol Lee ),한승현 ( Seung Hyun Han ),김성준 ( Seong Jun Kim ),장한나 ( Han Na Chang ),이명종 ( Myong Jong Yi ),박관수 ( Gwan Soo Park ),김춘식 ( Choon Sig Kim ),손영모 ( Yeong Mo Son ),김래현 ( Rae Hyun Kim ),손요환 한국농림기상학회 2015 한국농림기상학회지 Vol.17 No.1

산림은 많은 양의 탄소를 저장하고 있으며, 산림 탄소 동태는 기후변화에 따라 변화할 것으로 예상된다. 본 연구는 우리나라 산림에서 가장 우점하는 침엽수종과 활엽수종인 소나무림과 참나무림을 대상으로 최근 개발 및 개선된 한국형산림토양탄소모델(Korean ForestSoil Carbon model; KFSC model)을 이용하여 두 가지 기후변화 시나리오(2012년 기온이 2100년까지 유지되는 시나리오(CT), Representative Concentration Pathway(RCP) 8.5 시나리오) 하에서의 산림 탄소 동태를 예측하였다. 5차 국가산림자원조사 자료로부터 소나무림과 굴참나무림 조사구들을 추출한 뒤, 이를 행정구역(9개 도, 7개 특별·광역시) 및 영급(1-5영급, 6영급이상)별로 분류하여 탄소 동태 모의 단위를 설정하였다. 탄소 저장고는 2012년을 기준으로 초기화하였으며, 모의 기간인 2012년부터 2100년까지 모든 교란은 고려하지 않았다. 모의 결과 산림 탄소 저장량은 시간이 경과함에 따라 전반적으로 증가하지만, CT 시나리오에 비하여 RCP 8.5 시나리오 하에서 산림 탄소 저장량이 낮게 나타났다. 소나무림의 탄소 저장량(Tg C)은 2012년에 260.4에서 2100년에는 각각 395.3(CT 시나리오) 및 384.1(RCP 8.5 시나리오)로 증가하였다. 굴 참나무림의 탄소 저장량(Tg C)은 2012년에 124.4에서 2100년에는 219.5(CT 시나리오) 및 204.7(RCP 8.5 시나리오)로 각각 증가하였다. 5차 국가산림자원조사 자료와 비교한 결과, 고사유기물 탄소 저장량의 초기값은 타당한 것으로 나타났다. 모의 기간 동안 소나무림과 굴참나무림의 연간 탄소 흡수율(g C m-2 yr-1)은 CT 시나리오 하에서 각각 71.1과 193.5, RCP8.5 시나리오 하에서 각각 65.8과 164.2로 추정된다. 따라서 우리나라 소나무림과 굴참나무림의 탄소 흡수잠재력은 지구 온난화에 의하여 감소할 것으로 예상된다. 비록 모델의 구조와 파라미터로부터 불확실성이 존재하지만 본 연구는 미래 산림 탄소 동태 파악에 기여할 것으로 기대된다. Forests contain a huge amount of carbon (C) and climate change could affect forest C dynamics. This study was conducted to predict the C dynamics of Pinus densiflora and Quercus variabilis forests, which are the most dominant needleleaf and broadleaf forests in Korea, using the Korean Forest Soil Carbon (KFSC) model under the two climate change scenarios (2012-2100; Constant Temperature (CT) scenario and Representative Concentration Pathway (RCP) 8.5 scenario). To construct simulation unit, the forest land areas for those two species in the 5th National Forest Inventory (NFI) data were sorted by administrative district and stand age class. The C pools were initialized at 2012, and any disturbance was not considered during the simulation period. Although the forest C stocks of two species generally increased over time, the forest C stocks under the RCP 8.5 scenario were less than those stocks under the CT scenario. The C stocks of P. densiflora forests increased from 260.4 Tg C in 2012 to 395.3 (CT scenario) or 384.1 Tg C (RCP 8.5 scenario) in 2100. For Q. variabilis forests, the C stocks increased from 124.4 Tg C in 2012 to 219.5 (CT scenario) or 204.7 (RCP 8.5 scenario) Tg C in 2100. Compared to 5th NFI data, the initial value of C stocks in dead organic matter C pools seemed valid. Accordingly, the annual C sequestration rates of the two species over the simulation period under the RCP 8.5 scenario (65.8 and 164.2 g C m-2 yr-1 for P. densiflora and Q. variabilis) were lower than those values under the CT scenario (71.1 and 193.5 g C m-2 yr-1 for P. densiflora and Q. variabilis). We concluded that the C sequestration potential of P. densiflora and Q. variabilis forests could be decreased by climate change. Although there were uncertainties from parameters and model structure, this study could contribute to elucidating the C dynamics of South Korean forests in future.

물-에너지-식량-탄소 넥서스를 이용한 통합물관리 모델 평가 연구 - 영산강 수계를 중심으로 -

나라 ( Na Ra ),박진현 ( Park Jin-hyeon ),주동혁 ( Joo Donghyuk ),김하영 ( Kim Hayoung ),유승환 ( Yoo Seung-hwan ),오창조 ( Oh Chang-jo ),이상현 ( Lee Sang-hyun ),오부영 ( Oh Bu-yeong ),허승오 ( Hur Seung-oh ) 한국농촌계획학회 2023 농촌계획 Vol.29 No.1

Active attention and effort are needed to develop an integrated water management system in response to climate change. In this study, it proposed models for cross-use of agricultural water and river maintenance water using sewage treatment water as an integrated water management system for the Yeongsan River. The impact of the integrated water management models was assessed by applying the concept of Nexus, which is being presented worldwide for sustainable resource management. The target year was set for 2030 and quantitatively analyzed water, energy, land use and carbon emissions and resource availability index by integrated water management models was calculated by applying maximum usable amount by resource. An integrated water management system evaluation model using the Nexus concept developed in this study can play a role that can be viewed in a variety of ways: security and environmental impact assessment of other resources. The results of this research will be used as a foundation for the field of in the establishment of a policy decision support system to evaluate various security policies, as we analyzed changes in other factors according to changes in individual components, taking into account the associations between water, energy, food, and carbon resources. In future studies, additional sub-models need to be built that can be applied flexibly to changes in the future timing of the inter-resource relationship components. 1)

신생아 제대혈에 있어서 Alphafetoprotein 치와 Bilirubin 치에 관한 연구

박영봉,나창수 朝鮮大學校 附設 醫學硏究所 1989 The Medical Journal of Chosun University Vol.14 No.1

Alpha-fetoprotein(AFP) is a major plasma protein synthesized by the fetal liver, york sac, and gastrointestinal tract. There were many reports that elevated AFP levels in maternal serum and amniotic fluid have been associated with fetal distress and intrauterine fetal death, and recent studies demonstrates a high association between elevated AFP levels in maternal serum and umbilical cord blood and subsequent neonatal jaundice in normal healthy fullterm infants. To investigates the relationship between serum AFP and bilirubin levels of the newborn infants, the authors determind maternal serum and umbilical cord blood AFP concentration in 26 cases of normal healthy fullterm infants and their mothers, The serum AFP levels were measured by the method of enzyme immunoassay(AFP-EIA kit, USA) The results observed are summerized as follows: 1. The mean serum AFP levels of the newborn infants and their mothers were 27227.285ng/㎖ and 161.09ng/㎖, respectively and there was significant correlation between serum AFP levels of the newborn infants and their mothers, (Y= 14.598x+25646.955, r=0.1627, P<0.1627, p<0.005) 2. The mean serum AFP levels of the mothers and mean serum bilinibin levels of the newborn infants were 161.09ng/㎖ and 1.19ng/㎖, respectively and there was significant correlation between serum APP levels of the mothers and serum bilirubin levels of the newborn infants (Y=0.000032x+0.2831, r=0. 272491, P<0.005)

Pulmonary Inflammatory Pseudotumor with Solitary Plasmacytoma of Bone Mimicking Advanced Lung Cancer

( Chang Hoon Kim ),( Jae Seok Jeong ),( Yong Chul Lee ),( So Ri Kim ),( Yeong Hun Choe ),( Seung Yong Park ) 대한결핵 및 호흡기학회 2020 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.128 No.-

Lung cancer has been the most commonly diagnosed type of cancer and the leading cause of cancer related mortality in Korea and worldwide. Although it is fatal, most of the lung cancer patient are asymptomatic at the time of diagnosis. Therefore, radiologic screening by chest low-dose computerized tomography (LDCT) has been recommended by lung cancer specialists for early detection and improving survival. However, clinical suspicion of lung cancer by radiologic screening is quite challenging because of its high false positive rate. A wide range of benign pulmonary diseases could be misinterpreted as lung malignancy on LDCT, including infection, benign mass-forming lesion, and inflammatory changes. Therefore, physician should consider the possibility of the benign disease entities when radiologic features suggest lung malignancy. Herein, we report a case of a 50-year-old man presenting a 4.5-cm lung mass in the right upper lobe with solitary osteolytic lesion of the right 8th rib. Under the suspicion of metastatic lung cancer, the lung mass and the right 8th rib were surgically resected for the diagnostic and curative purpose. After the tissue biopsy, unexpectedly, the lung mass was diagnosed as inflammatory pseudotumor. Furthermore, histopathology of the resected rib showed solitary plasmacytoma of the bone. Our experience highlights the importance of clinical suspicion that in patients with radiologic features compatible to advanced lung cancer could be caused by coexistence of unrelated two uncommon disease entities, which can be completely treatable with surgical resection.

부산시 지역별 인구고령화 양상과 그 특성에 관한 연구

박영호,김수남,최창환 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.28 No.2

The purpose of this study is to investigate the trend of aging of population within Busan. For this study, 2 population structure indexes and 3 aging indexes of each Dong were analysed and cluster analysis were used for finding out the regional trend and distribution characteristics of aging of population. Also they were analyzed by considering relationship of location with both the period of urbanization and topography. Some of the findings are summarized as follows. (1) the trend of aging of population in area being closer to CBD is more serious than other areas. (2) Aging of population of 5 groups has been serious or going to be rise sharply. Especially, Dongrae in northern CBD axis is expected even rapid depopulation (3) Areas, which are close by mountainous districts are immediately needed to bring regional improvement for aged population

Delayed bilateral facet dislocation at L4-5 : A case report

Park, Hyung-Youl,Ha, Kee-Yong,Kim, Young-Hoon,Kim, Sang-Il,Min, Hyung-Ki,Oh, In-Soo,Seo, Jun-Yeong,Chang, Dong-Gune,Alhazmi, Mohammed Ali,Cho, Joon-Hyung Williams & Wilkins Co 2018 Medicine Vol.97 No.38

<P><B>Abstract</B></P><P><B>Rationale:</B></P><P>Traumatic bilateral facet dislocation in the lumbar (L) spine has rarely been reported. All reported cases were presented with acute facet dislocation. However, we present the first case of delayed bilateral facet dislocation at L4-5.</P><P><B>Patient concerns:</B></P><P>A 34-year-old woman presented with back pain after a head-on collision. The patient was treated conservatively for 3 months with rigid orthosis and activity restriction. Even after this conservative treatment, she continued to suffer from persistent back pain that radiated down her left leg and a progressively kyphotic posture.</P><P><B>Diagnoses:</B></P><P>Initial imaging studies revealed a fracture of the left L5 superior articular process with a posterior ligament complex (PLC) injury. Subsequent radiographs showed the locked facet dislocation with kyphotic changes.</P><P><B>Interventions:</B></P><P>The patient underwent surgical reduction and fusion, and the operative findings revealed the L4-5 bilateral facet dislocation and rupture of the PLC at the index level.</P><P><B>Outcomes:</B></P><P>After surgical reduction and fusion at L4-5 by posterior interbody fusion, we achieved a satisfactory clinical outcome.</P><P><B>Lessons:</B></P><P>Injury of the PLC in the lower lumbar region deserves careful attention for the development of sequelae. The anatomic transition from lordosis to kyphosis, in the lumbosacral region may be related to this type of injury.</P>

변색 실활치에 대한 carbamide peroxide gel의 표백효과

박선아,김선호,황윤찬,오병주,윤창,박영준,정선와,황인남,오원만 大韓齒科保存學會 2002 Restorative Dentistry & Endodontics Vol.27 No.4

The bleaching of discolored nonvital teeth is conservative treatement that satisfy the cosmetic desire. The most common method for this treatement, walking bleaching, is using 30% hydrogen peroxide and sodium perborate. Many alternatives are suggested for preventing the external cervical root resorption that is the common complication of the nonvital teeth bleaching with 30% hydrogen peroxide. The same extent of oxidation reactions as that resulted by the bleaching with the application of 30% hydrogen peroxide and sodium perborate can also be acquired more safely by materials that contain 10% carbamide peroxide, used primarily for the bleaching of vital teeth. Therefore, this study was performed to evaluate the efficacy of 10% and 15% carbamide peroxide bleaching gel in nonvatal teeth bleaching. The internal bleaching of intentionally discolored teeth was performed in vitro with 10% carbamide peroxide (Group 1), 15% carbamide peroxide (Group 2), mixture of distilled water and sodium perborate (Group 3), and mixture of 30% hydrogen peroxide and sodium perborate (Group 4). The bleaching materials were refreshed following 3, 6, 9 and 12 days. To evaluate the bleaching effect, the color change of the crowns was measured at 1, 2, 3, 4, 7 and 15 days of bleaching using the colorimeter. The results were as follows : 1. L^* and ΔE^* values were increased with time in all bleaching agents(p<0.01). 2. There was no significant difference in L^* and ΔE^* value among bleaching agents. 3. Δ^* value higher than 3 was shown after 3 days of bleaching with 10% carbamide peroxide gel, 1 day with 15% carbamide peroxide gel, 4 days with mixture sodium perborate and distilled water and 4 days with mixture sodium perborate and 30% hydrogen peroxide, respectively. These results revealed that the use of 10% and 15% carbamide peroxide bleaching gel in non-vital teeth bleaching is as effective as mixture of distilled water and sodium perborate and mixture of 30% hydrogen peroxide and sodium perborate. Accordingly, carbamide peroxide could be used clinically to bleach discolored non-vital teeth.

무기 이소시안화 및 티오시안화 전이금속 화합물의 구조에 관한 연구

박윤창,지광용,이미녕,이영희 성균관대학교 기초과학연구소 1989 論文集 Vol.40 No.1

IR, UV 그리고 EPR 분석을 통해 〔R_4N〕_2 〔M(NCX)_4〕 (이 때, R=CH_3^+, C_2H_5^+; M=Cd Cu, Zn, X=O, S) 화합물의 착이온에서 중심 금속이 N과 결합하고 있는지 아니면 O, S와 결합하고 있는지를 연구했다. 위의 모든 화합물은 금속이 N과 결합된 것으로 규명되었다. Cd(Ⅱ)과 Cu(Ⅱ) 화합물은 일그러진 정사면체 구조에 의해 C-N, C-S 신축진동수의 분리를 보였다. IR 스펙트럼에서 〔(C_2H_5)_4N〕_2 〔Cu(NCS)_4〕는 단일선의 C-N 신축진동수를 보인 반면, 〔(CH_3)_4N〕_2 〔Cu(NCS)_4〕는 일그러진 정사면체 구조에 기인한 이중선을 보였다. 〔(C_2H_5)_4N〕_2 〔(Cu(NCS)_4〕는 d-d 전이로 판단되는 넓은 전자흡수띠가 438nm 근처에서 관찰된 반면, 〔(CH_3)_4N〕_2 〔Cu(NCS)_4〕는 d-d전이에 의한 흡수띠가 관찰되지 않았다. 5% Cu(Ⅱ)이 혼입된 〔(C_2H_5)_4N〕_2 〔Cd(NCS)_4〕의 EPR 스펙트럼은 비등방성 구조를 지녔으나, 〔(CH_3)_4N〕_2 〔Cd(NCS)_4〕는 비등방성 뿐만 아니라 정규적인 정사면체 구조의 증거인 등방성을 상온에까지 지녔다. IR, UV and EPR spectra of the compounds whose formulas are 〔R_4N〕_2 〔M(NCX)_4〕, where R=CH_3^+, C_2H_5^+ and M=Cd, Cu, Zn;X=O, S have been studied in order to investigate whether the isocyanato, thiocyanato group is bonded to the central metal through the nitrogen atop or through the sulfur, oxygen atom in those complex ions. All above complexes showed that the metal is linked through the nitrogen atom. It was turned out to be that. the splitting in C-N and C-S stretching frequencies of Cd(Ⅱ) and Cu(Ⅱ) compounds is due to the distorted tetrahedral structure of those compounds. While IR spectrum of 〔(C_2H_5)_4N〕_2 〔Cu(NCS)_4〕 showed singlet C-N stretching frequency, 〔(CH_3)_4N〕_2 〔Cu(NCS)_4〕 showed doublet which indicates that the compound has a distorted tetrahedral structure. 〔(C_2H_5)_4N〕_2 〔Cu(NCS)_4〕 was observed to have a broad electronic absorption band near 438 nm which originates from d-d transition. On the other hand, 〔(CH_3)_4N〕_2 〔Cu(NCS)_4〕 did not show an absorption band due to d-d transition. EPR. spectrum of Cu(Ⅱ) doped 〔(C_2H_5)_4N〕_2 〔Cd(NCS)_4〕 showed anisotropic structure and 〔(CH_3)_4N〕_2 〔Cd(NCS)_4〕 showed both anisotropic and isotropic structure even at room temperature which is an evidence of regular tetrahedral structure.

저유량 마취를 위한 전자제어식 기화기 개발

오영택,박재훈,장인배 江原大學校 産業技術硏究所 2009 産業技術硏究 Vol.29 No.B

For the environmental safety of the operating room and patient healthcare, the closed type rebreathing system is widely adopted. In order to reduce the anesthesia gas during surgery, the mixing ratio of anesthesia gas with breathing air should be precisely controlled. Generally, the breathing air passes through the vaporizer to mix the anesthesia gas, but there is a difficulty in controlling the mixing ratio precisely. In this paper, the stand-alone style vaporizer is designed and the operating characteristics are investigated. The vaporizer measures the temperature and pressure in the vaporizing chamber and chamber temperature is precisely controlled by proportional controlled heater. Exact quantity of anesthesia media is feeded by PID controlled peristaltic pump and vaporized gas is mixed with breathing air flow by PWM controlled solenoid valve. The experimental result shows that the vaporizer has an excellent command following performances that it can be applied to the low flow anesthesia system.

Poster Session:PS 1203 ; Cardiology : Predictive Factors of Reversibility in Patients with Severe Tricuspid Regurgitation

( Jae Yeong Cho ),( Kye Hun Kim ),( Kyung Jin Lee ),( Yi Rang Yim ),( Sung Soo Kim ),( Hae Chang Jeong ),( Ki Hong Lee ),( Keun Ho Park ),( Doo Sun Sim ),( Hyun Ju Yoon ),( Nam Sik Yun ),( Young Joon 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background:Since severe tricuspid regurgitation (TR) is an uncommon fi nding which develops in various conditions, the present study aimed to investigate etiology, clinical characteristics, and predictors of reversibility in patients with severe TR. Methods:A total of 232 patients (67. 4±14. 1 years, 80 males) who were diagnosed with severe TR by echocardiography were enrolled. Severe TR was defi ned as vena contracta width greater than 0. 7 cm and systolic fi ow reversal in hepatic veins according to the current guideline of American Society of Echocardiography (ASE). Improvement of TR to moderate or less degree on follow up echocardiography was considered as reversible TR in the present study. Primary end points were adverse events at long-term follow-up. Adverse events were defi ned as all-cause death and operation due to severe TR. Results: Reversible TR was observed in 35 out of 153 patients (23. 0%). Sixty-one patients showed clinical improvement, but the degree of TR was not changed. Forty-nine patients (32%) who did not show clinical improvement despite of medical therapy eventually underwent surgical correction of TR, and 7 patients died. In addition, 17 patients died without operation, so 24 deaths (16%) were observed in total. finally, total adverse events developed in 66 patients (41%) during 2 years of follow-up period. Logistic regression analysis revealed prosthetic mitral valve was the only independent predictors of future adverse events (OR 2. 47, 95%CI 1. 05-5. 77, p=0. 038). Independent predictors of improved TR turned out to be the use of RAAS blockade (HR 3. 02, 95%CI 1. 12-8. 17, p=0. 030) and the use of spironolactone (HR 3. 39, 95%CI 1. 05-10. 90, p=0. 041). Low ejection fraction (LVEF <50%) also had a trend toward the reversibility (HR 2. 82, 95%CI 0. 94-8. 40). Conclusions:Considering results above, reversible severe TR mainly associated with left heart failure and medical treatment should be given before considering surgery for severe TR.