다중시기 위성자료 기반 낙동강 하구 지역 갯벌 면적 분석을 통한 블루카본 저장량 변화 평가

김민주,박정우,현창욱,Minju Kim,Jeongwoo Park,Chang-Uk Hyun 대한원격탐사학회 2024 大韓遠隔探査學會誌 Vol.40 No.2

Global warming is causing abnormal climates worldwide due to the increase in greenhouse gas concentrations in the atmosphere, negatively affecting ecosystems and humanity. In response, various countries are attempting to reduce greenhouse gas emissions in numerous ways, and interest in blue carbon, carbon absorbed by coastal ecosystems, is increasing. Known to absorb carbon up to 50 times faster than green carbon, blue carbon plays a vital role in responding to climate change. Particularly, the tidal flats of South Korea, one of the world's five largest tidal flats, are valued for their rich biodiversity and exceptional carbon absorption capabilities. While previous studies on blue carbon have focused on the carbon storage and annual carbon absorption rates of tidal flats, there is a lack of research linking tidal flat area changes detected using satellite data to carbon storage. This study applied the direct difference water index to high-resolution satellite data from PlanetScope and RapidEye to analyze the area and changes of the Nakdong River estuary tidal flats over six periods between 2013 and 2023, estimating the carbon storage for each period. The analysis showed that excluding the period in 2013 with a different tidal condition, the tidal flat area changed by up to approximately 5.4% annually, ranging from about 9.38 km² (in 2022) to about 9.89 km² (in 2021), with carbon storage estimated between approximately 30,230.0 Mg C and 31,893.7 Mg C.

Chunghyul-Dan(Qingxie-Dan) Improves Arterial Stiffness in Patients with Increased baPWV

Park, Seong Uk,June, Woo Sang,Moon, Sang Kwan,Ko, Chang Nam,Cho, Ki Ho,Kim, Young Suk,Bae, Hyung Sup 경희대학교 동서의학연구소 2006 東西醫學硏究所 論文集 Vol.2006 No.-

Arterial stiffness is an important, independent determinant of cardiovascular risk. Pulse wave velocity (PWV) has been used as a valuable index of arterial stiffness and as a surrogate marker for atherosclerosis. Chunghyul-dan (CHD) has anti-hyperlipidemic activity, anti-inflammatory activity and anti-atherogenic effects. To determine its clinical effect on increased arterial stiffness, we examined whether CHD improves arterial stiffness in patients with increased brachial-ankle PWV (baPWV). Thirty-five subjects with increased baPWV (> 1400 cm/sec) were recruited and randomized to a treatment group (20 subjects) or a control group (15 subjects). The treatment group was administered CHD at a dose of 600 mg three times a day for 8 weeks, and the control group received no medication (observation only). baPWV was assessed using a pulse pressure analyzer at baseline and after 8 weeks. Blood pressure and serum lipid profile were monitored in the treatment group. Our results indicate that baPWV was lowered significantly in the treatment group after 8 weeks of medication (p < 0.05), but not in the control group. Moreover, there were no significant changes in blood pressure and serum lipids profile except triglyceride level suggesting that the effect is largely independent of CHD's lipid-lowering effect or a blood pressure change. In conclusion, CHD appears to improve arterial stiffness in patients with increased PWV.

논문(論文) : 철응(鐵凝) 소설 ≪분화(花)≫에 대한 신역사주의적 접근

박창욱 ( Chang Uk Park ) 중국어문연구회 2015 中國語文論叢 Vol.0 No.67

This thesis aimed at searching for narrative characteristics and significance of Tie Ning’s Novel Thickheaded Flower. In this paper, Chinese contemporary writer Tie Ning (1957-) novel Thickheaded Flower was investigated. Critics have mainly from the aspect of ‘feminism’ to explore fiction Tie Ning. But since 2005 when the Tie Ning’s Thickheaded Flower came out, this situation has changed. Thickheaded Flower narrative is involving not only the ordinary people during the Republic of China People’s family history, but also the history of female characters growth. And it is attempting to explore the ‘Dehistoricization’ and so meaningful. Therefore, by analyzing the Thickheaded Flower, we can examine the Tie Ning’s historical consciousness. I believe it is worthy work to study the Thickheaded Flower narrative for the exploring in the context of new historicism in contemporary Chinese literature.

출산에 따른 그레이브스병의 재발 및 관련이자

임창훈,최현아,한승석,김해성,이창욱,정호연,한기옥,장학철,박원근,윤현구,한인권 대한내분비학회 2002 Endocrinology and metabolism Vol.17 No.2

Background: Pregnancy affects the course of Graves' Disease (GD), and patients who initially maintain euthyroid function into their middle trimester with minimum doses of antithyroid drugs become exacerbated after delivery. Even patients who are completely cured, requiring no treatment during pregnancy, can relapse after delivery. In this study, we examined the postpartum changes in the thyroid functions of patients with GD, and attempted to determine the factors contributing to these changes. Methods: The study subjects were recruited from pregnant women visiting our outpatient clinic for routine prenatal evaluations. 45 women previously diagnosed with GD, who had been treated and cured with hyperthyroidism, and were no longer taking any thyroid medications, were evaluated for 1 year post delivery. Results: Among 45 patients, 20 (44.4%) developed thyroid disorders following delivery. Postpartum thyroiditis (PPT) developed in 8 patients (17.8%), and GD developed in 12 (26.0%). The onset of the PPT disease 3.1 ± 1.4 months following delivery, which was significantly earlier than the 6.7 ± 2.7 months required for the post delivery onset of GD (p=0.003). The TBII values, measured during the thyrotoxic state in each womaen, were negative in women with PPT and positive in 71.4% of women with GD (p=0.030). The duration of treatment for hyperthyroidism prior or pregnancy, the number of recurrences, and the time interval without treatment, were not associated with the development of postpartum thyroid disorders. Whereas, the mean number of past pregnancies for women who developed PPT was 3.9 ± 2.1, and was significantly higher than the 2.2 ± 1.7 for women developing no thyroid dysfunctions (p=0.044). In 13 women their initial onset of GD occurred within one year postpartum, 7 (53.8%) having had a recurrence, which was significantly higher than in women whose disease onset occurred unrelated to delivery (5 of 32 women: 15.6%). Conclusion: Women with GD developed postpartum thyroid dysfunctions in 44.4% of cases. Women whose initial disease onset occurred within one year postpartum had higher recurrences of GD, and women who developed PPT had a history of higher gravidity compared to the euthyroid women postpartum. Therefore, if women with GD develop postpartum thyroid dysfunctions, the diagnosis should be made, and a treatment modality planned, following careful considerations of the patients' past obstetric history, changes in clinical manifestations and the TBII values

30% 과산화수소를 함유한 전문가 미백제의 효용성 평가

김신영,박재억,김창현,양성은 大韓齒科保存學會 2010 Restorative Dentistry & Endodontics Vol.35 No.1

30% 과산화수소를 함유한 전문가 미백제인 레메화이트(Remewhite, Remedent Inc., Deurle, Belgium)를 시험군 피험자 31명, 시험용 미백제에서 과산화수소를 제외한 동일한 제재를 대조약으로 대조군 피험자 31명에게 1일 3회씩, 2차례에 걸쳐서 시행하였다. 미백의 임상적 효용성은 Colorimeter, Vitapan classical shade guide를 이용하여 전체 색변화량(□E*)을 측정하였다. 14주 후와 26주 후의 색변화량을 측정하여 군 간 색변화량을 비교하였고, 각 군 내에서의 색변화량도 비교하여 다음과 같은 결론을 얻었다. 1. Colohmeter를 이용한 평가시에 시험군에서 전체 색변화량(□E*)은 대조군에 비해 통계적으로 유의한 차이를 보였고, Vitapan classical shade guide를 이용한 평가시에는 통계적으로 유의한 차이를 나타내지 않았다(p < 0.05). 2. 시간이 지남에 따라 색 복원 현상이 나타남에도 불구하고 미백 시행 14주 후와 26주 후에도 미백의 효과가 유지된다고 할수 있다. 3. Colohmeter를 이용한 평가시에 Vitapan classical shade guide를 이용한 평가시보다 작은 색변화량을 더 정확하게 측정할 수 있다. This study evaluated the efficacy of an office bleaching gel (RemeWhite, Remedent Inc., Deurle, Belgium) containing 30% hydrogen peroxide. 31 volunteers were recieved office bleaching with the RemeWhite for 3 times at one visit, total 2 visits. As control group, the same gel in which hydrogen peroxide was not included was applied to 31 volunteers with the same protocol. The shade change (□E*, color difference) of 12 anterior teeth was measured using Colorimerter and Vitapan classical shade guide. The shade change of overall teeth in the experimental group was significantly greater than that in the control group which was measured using Colorimeter. There was also a significant difference between baseline and 14 weeks or 26 weeks though color rebounding phenomenon occurred as time went by. Small shade change difference can be measured accurately using Colorimeter than using Vitapan classical shade guide.

Gene profile of fibroblasts identify relation of CCL8 with idiopathic pulmonary fibrosis

Lee, Jong-Uk,Cheong, Hyun Sub,Shim, Eun-Young,Bae, Da-Jeong,Chang, Hun Soo,Uh, Soo-Taek,Kim, Young Hoon,Park, Jong-Sook,Lee, Bora,Shin, Hyoung Doo,Park, Choon-Sik BioMed Central 2017 Respiratory research Vol.18 No.-

<P><B>Background</B></P><P>Idiopathic pulmonary fibrosis (IPF) is characterized by the complex interaction of cells involved in chronic inflammation and fibrosis. Global gene expression of a homogenous cell population will identify novel candidate genes.</P><P><B>Methods</B></P><P>Gene expression of fibroblasts derived from lung tissues (8 IPF and 4 controls) was profiled, and ontology and functional pathway were analyzed in the genes exhibiting >2 absolute fold changes with <I>p</I>-values < 0.05. <I>CCL8</I> mRNA and protein levels were quantified using real-time PCR and ELISA. <I>CCL8</I> localization was evaluated by immunofluorescence staining.</P><P><B>Results</B></P><P>One hundred seventy eight genes differentially expressed and 15 genes exhibited >10-fold change. Among them, 13 were novel in relation with IPF. <I>CCL8</I> expression was 22.8-fold higher in IPF fibroblasts. The levels of <I>CCL8</I> mRNA and protein were 3 and 9-fold higher in 14 IPF fibroblasts than those in 10 control fibroblasts by real-time PCR and ELISA (<I>p</I> = 0.022 and <I>p</I> = 0.026, respectively). The <I>CCL8</I> concentrations in BAL fluid was significantly higher in 86 patients with IPF than those in 41 controls, and other interstitial lung diseases including non-specific interstitial pneumonia (<I>n</I> = 22), hypersensitivity pneumonitis (<I>n</I> = 20) and sarcoidosis (<I>n</I> = 19) (<I>p</I> < 0.005, respectively). Cut-off values of 2.29 pg/mL and 0.43 pg/mL possessed 80.2 and 70.7% accuracy for the discrimination of IPF from NC and the other lung diseases, respectively. IPF subjects with <I>CCL8</I> levels >28.61 pg/mL showed shorter survival compared to those with lower levels (<I>p</I> = 0.012). <I>CCL8</I> was expressed by α-SMA-positive cells in the interstitium of IPF.</P><P><B>Conclusions</B></P><P>Transcriptome analysis identified several novel IPF-related genes. Among them, <I>CCL8</I> is a candidate molecule for the differential diagnosis and prediction of survival.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (doi:10.1186/s12931-016-0493-6) contains supplementary material, which is available to authorized users.</P>

만성 췌장염에 의한 십이지장 협착 1예

서백종,장기육,박용근,채현석,한석원,이창돈,정인식,차상복,박두호 대한내과학회 1997 대한내과학회지 Vol.53 No.3S

저자들은 만성췌장염환자에서 지속적인 오심과 구토를 주소로 내원하여 십이지장협착으로 진단된 1예를 경험하였기에 보고하는 바이다. Duodenal stenosis resulting from fibroinflammatory process is a rare complication of chronic pancreatitis. The mechanism of duodenal stenosis seems to be related to ischemia and edema caused by persistent inflammation, which results in irreversible change of duodenal wall structure. We experienced a chronic alcoholic male patient with duodenal stenosis who had a history of choledochojejunostomy to relieve distal bile duct stenosis several years ago. He had suffered persistent postprandial nausea and vomiting for several months. Barium study of upper gastrointestinal tract and repeated endoscopy show narrowing lumen of duodenum with coarse nodular surface due to reactive inflammatory change.

최고경영자의 교체가 기업의 사업구조 집중화에 미치는 영향

박종철(Jong Chull Park),정창욱(Chang Wook Jung),이호욱(Ho Uk Lee) 한국전략경영학회 2008 전략경영연구 Vol.11 No.3

승계 유형으로 볼 때 기업 내부에서 승진한 경우와 외부에서 영입한 인사는 해당 기업의 변화여부에 대한 인식의 차이가 있다. 또한 전임 최고경영자(CEO)의 교체사유가 임기만료와 같은 정상상황인가 혹은 성과에 대한 문책성 교체인가에 따라 신임 최고경영자는 전임자의 전략 기조를 유지하거나 혹은 변화를 가할 수 있다. 본 연구는 이와 같은 선행 연구의 바탕에서 기업의 전략변화에 대해 구조조정(Restructuring)중에서 기업의 적극적인 의사결정에 따라 수행되는 측면이 강한 사업 분야의 구조조정인 사업구조 집중화(Refocusing)에 신임 최고경영자가 선임되었을 때 승계 유형과 전임 최고경영자의 교체사유, 그리고 기업의 이전성과가 맞물려 어떠한 영향을 미치는가를 다루었다. 최고경영자 교체 이벤트(Event)에 대한 승계유형, 전임자 교체사유, 이전 기업성과에 대한 자료를 수집 후 실증 분석 결과 다음과 같은 결론을 도출할 수 있었다. 첫째, 외부 영입된 신임 최고경영자가 전략적 변화에 보다 주도적이라는 사실을 증명하였다. 둘째, 전임 최고경영자의 해임은 외부에서 영입된 신임 최고경영자 보다 기업의 사업구조를 집중화를 이루도록 하는 조절효과가 입증되었다. 승계유형 단독효과 보다는 승계유형과 교체사유가 상호작용 되었을 때 기업의 사업구조 집중화정도는 커졌다. 셋째, 이전 기업성과가 갖는 조절효과는 지지되었는데, 이는 최고경영자 교체직전의 기업성과가 나쁠수록 외부에서 영입한 최고경영자는 기업의 사업구조 집중화에 매진함을 보여준다. 따라서 본 논문은 조직이 지닌 전략적 혹은 구조적 관성을 극복할 수 있는 수단으로 최고경영자 교체를 고려할 경우, 안정이 필요한 조직인가 아니면 전략 변화가 필요한 조직인가 하는 등의 해당기업 최고경영자로서 보다 적합한 승계자 조건에 대한 근거를 제공했다는데 의의를 찾을 수 있겠다. There is a different recognition about strategic change of corresponding firm depends on the chief executive officer wether he is promoted from inside or outside of the firm. In this paper, we find out that the CEOs who were from outside of the firms are more willing to strategic change. And when the predecessor in office was dismissed, it has more effect to refocusing than the CEOs exchange from the outside of the firm. Last, If the firm has a bad earning, the CEOs who were from outside of the firms tend to more choose to refocusing.

腦硬塞患者의 血壓·脈搏 및 腦血流에 대하여 水溝-承漿穴 電鍼刺戟이 미치는 影響

박성욱,문상관,고창남,조기호,김영석,배형섭,이경섭 경희대학교 1997 慶熙醫學 Vol.13 No.4

GPS/INS를 활용한 항공 정사영상 제작에 관한 연구

박병욱,이창재,서상일 한경대학교 2008 論文集 Vol.40 No.-

In this study we took the aerial photos scaled 1:5,000 with aircraft equipped GPS/INS. DEM was generated by automatic image matching method using the exterior orientation parameters obtained by GPS/INS, and the ortho-images were produced by differential rectification based on that. As the result of measurement of RMSE based on digital map for ortho-images produced with GPS/INS data, the horizontal position error was 61cm that was good enough to satisfy the precision demand of 1:1,000 ortho-image map. There were no big differences in precision of ortho-images between GPS/INS and aerial triangulation process. It seems that the producing method of ortho-image using GPS/INS data can be speedier and more efficient method than traditional method using aerial triangulation