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황정우 ( Jung-woo Hwang ),오승원 ( Seung-won Oh ) 한국목재공학회 2017 목재공학 Vol.45 No.3
This study was carried out to explore a new application of the by-products sawdust, formed during sawing and mandarin peels which are agricultural by-products. The boards were manufactured by mixing the sawdust and mandarin peels at different mixing ratio and density. The boards were then converted to ceramics by various percentage of resin impregnation and at different carbonization temperatures. As the percentage of resin impregnation increased, the weight loss was decreased; on the other hand, density, linear shrinkage and thickness shrinkage increased. As the carbonization temperature increased, the weight loss was increased and linear thickness shrinkage increased to 1000℃ and the subsequent increase was insufficient. As the percentage of mandarin peels addition increased, the weight loss, linear shrinkage and thickness shrinkage was decreased.
소라페닙 치료 실패 후 소라페닙과 Tegafur 병용요법을 통해 간세포암의 완전관해를 유도한 증례 1예
황상연 ( Sang Youn Hwang ),이선미 ( Seon-mi Lee ),임정우 ( Jung Woo Im ),전기정 ( Ki Jeong Jeon ),안상부 ( Sang Bu Ahn ),박진영 ( Jin-young Park ),최철원 ( Cheol-won Choi ),양광모 ( Kwang-mo Yang ) 대한간암학회 2017 대한간암학회지 Vol.17 No.1
Sorafenib is the only approved targeted agent as the first line systemic therapy for treatment of advanced hepatocellular carcinoma (HCC). However, the improvement of survival duration under 3 months is far from clinical satisfactory and most patients experience disease progression within 6 months after sorafenib therapy. Unfortunately, second line systemic therapy after treatment failure of sorafenib was not established and there were no clear guidelines for salvage treatment modalities. Recently, studies suggests that combination of sorafenib and single cytotoxic agent can be relatively effective and safe strategy that achieves promising rates of local and systemic control in advanced HCC patients. Based on above suggestions, we herein offer our experience of a case achieved complete remission by combination therapy of sorafenib and tegafur in the patient with progressed disease after sorafenib therapy. (J Liver Cancer 2017;17:88-93)
다발성 전이를 동반한 고령의 간세포암 환자에서 경동맥방사선색전술과 반복적 경동맥화학색전술로 간내암과 다발성 전이의 부분관해를 이룬 증례
황상연 ( Sang Youn Hwang ),이선미 ( Seon-mi Lee ),임정우 ( Jung Woo Im ),전기정 ( Ki Jeong Jeon ),안상부 ( Sang Bu Ahn ),박진영 ( Jin-young Park ) 대한간암학회 2018 대한간암학회지 Vol.18 No.2
The number of older adults with hepatocelluar carcinoma (HCC) has been increasing with longer life expectancy and earlier diagnosis and treatment. However, older patients have lesser function reserve of multiple organ systems, more disability rate. Therefore, the treatment of elderly HCC patients remains a challenge worldwide. Recently, studies suggests that the survival outcome of older patients may be comparable to that of younger patients and active treatment may achieve promising rates of local and systemic control in selected patients. Based on above suggestions, we herein offer our experience of a case achieved partial remission by sequential therapy of transarterial chemoembolization after transarterial radioemoblization in elderly HCC patient with multiple metastasis. Further study, maybe regarding a combination of locoregional and systemic treatment, is necessary on how to manage HCC in elderly patients. (J Liver Cancer 2018;18:151-156)
동거 및 독거노인의 우울이 자살사고에 미치는 영향과 대인관계의 조절효과
황정우(Hwang, Jung Woo),이강욱(Lee, Kang Uk),김정유(Kim, Jung Yoo),이동하(Lee, Dong Ha),김두명(Kim, Doo Myung) 한국정신건강사회복지학회 2017 정신보건과 사회사업 Vol.45 No.1
본 연구는 동거 및 독거노인 각각의 자살사고에 영향을 미치는 요인은 무엇이며, 특히 대인관계의 조절효과는 어떠한지 알아보기 위하여 15,246명의 강원도 내 거주 노인으로부터 수집된 자료를 분석하였다. 연구의 주요 결과는 첫째, 독거노인의 자살사고가 동거노인보다 높은 것으로 나타났다. 둘째, 독거노인에서 남성의 자살사고가 여성보다 높았다. 셋째, 노인의 자살사고에 우울과 자살시도 경험이 가장 큰 영향력을 가지고 있었다. 넷째, 노인의 자살사고에 신체적 건강과 나이가 영향을 미치고 있었다. 다섯째, 동거노인은 경제적 상태가 이들의 자살사고에 영향을 미치고 있었던 반면에 독거노인은 문제음주가 영향을 미치고 있었다. 여섯째, 독거노인의 우울이 자살사고에 미치는 영향에서 이웃과의 연락 빈도가 조절효과를 가지고 있었다. 이러한 결과를 근거로 인간적 접촉을 강화하는 노인자살 예방방안들을 제언하였다. 본 연구는 국내에서 자살률이 가장 높은 강원도를 대단위 표집으로 연구한 의미가 있으나 이러한 연구지역 범위를 고려하여 연구결과를 일반화해야 한다. The aim of this study is to examine what factors affect on suicidal ideation of the elderly living together and the elderly living alone, especially how the personal relation has the moderating effects. Data from 15,246 elder living in Gangwon province were analysed. The main findings were as follows. First, the suicidal ideation of the elderly living alone was higher than the elderly living together. Second, the suicidal ideation of men were higher than women in the group of the elderly living alone. Third, the suicidal ideation of the elderly was most strongly affected by depression and suicidal attempt. Fourth, physical health and age affected on suicidal ideation of the elderly. Fifth, the suicidal ideation of the elderly living together was affected by financial condition, but the elderly living alone was affected by problem drinking. Sixth, the frequency of contacts with neighborhood had moderating effects in the affection of depression on suicidal ideation of the elderly living alone. Finally, strategies of improving human contacts for suicide prevention of the elderly are suggested. This study has regional significance because it was conducted with large sampling in Gangwon province that has the highest ratio of suicide. But we need to generalize the results with caution considering regional limits.
주문맥침범과 임파절 전이를 동반한 Child 등급 B인 간세포암 환자에서 방사선치료와 sorafenib 병합으로 종양의 부분관해를 경험한
황상연 ( Sang Youn Hwang ),이선미 ( Seon Mi Lee ),임정우 ( Jung Woo Im ),김준석 ( Joon Suk Kim ),안상부 ( Sang Bu Ahn ),지은경 ( Eun Kyeong Ji ),강현철 ( Hyun Cheol Kang ),최철원 ( Cheol Won Choi ),양광모 ( Gwang Mo Yang ) 대한간암학회 2014 대한간암학회지 Vol.14 No.2
Reserved liver function is one of the most important determinants of survivial in advanced hepatocellular carcinoma (HCC). Especially in cirrhotic patient with decompensated liver function, sorafenib for HCC with main portal vein invasion have limited efficacy and survival benefit. Therefore many clinicians or centers still try locoregional therapy (LRT) such as transarterial chemoembolization (TACE), radiation therapy (RT), or combination with LRT and sorafenib in this situation. However this multidisciplinary approach may increase treatment related toxicity such as liver failure, etc. Recently, studies for combination of RT and sorafenib for HCC with portal vein invasion have been tried and reported not only bettertherapeutic efficacy, but also more hepatic toxicity.Based on above suggestions, we herein offer our experience of a patient that although achieved survival gain via partial remission of intrahepatic tumor and main portal vein thrombosis and metastatic lymph node by combination therapy of RT and sorafenib, finally expired due to hepatictoxicity. Further study, maybe regarding a combination of locoregional and systemic therapy, is necessary on how to manage decompenstated cirrhotic patients with HCC with main portal vein invasion. (J Liver Cancer 2014;14:120-126)
황정우 ( Jung-woo Hwang ),오승원 ( Seung-won Oh ) 한국목재공학회 2017 목재공학 Vol.45 No.1
This study was investigated on the properties of board made from carbonized rice husk differed in density of board, resin addition ratio and sawdust addition ratio. Water absorption is showed the lowest value to 80.09% when the resin addition ratio of 25%, as the density increased and sawdust addition ratio decreased, the water absorption was decreased. The measured thickness swelling satisfied with the quality standards of KS F 3104, so the feasibility of building interior has been confirmed in the dimensional stability. In case of resin addition ratio of 25%, the internal bond strength was satisfied quality standards of KS F 3104 to 0.244 N/mm<sup>2</sup>. With increasing the density, resin and sawdust addition ratio, brinell hardness increased.
동정맥 단락을 동반한 4.8 cm의 침윤성 간세포암에서 정위체부방사선치료와 경동맥화학색전술로 종양의 완전관해를 경험한 1예
황상연 ( Sang Youn Hwang ),이선미 ( Seon Mi Lee ),임정우 ( Jung Woo Im ),김준석 ( Joon Suk Kim ),전기정 ( Ki Jeong Jeon ),안상부 ( Sang Bu Ahn ),지은경 ( Eun Kyeong Ji ),강현철 ( Hyun Cheol Kang ),최철원 ( Cheol Won Choi ),양광모 대한간암학회 2015 대한간암학회지 Vol.15 No.1
Infiltrative hepatocellular carcinoma (HCC) patients have a poor prognosis because most patients present with advanced disease. Although tumor size is small, ablation therapy is difficult because it is difficult to delineate tumor boundary and tumor often combined vascular invasion. Therefore many clinicians still try locoregional therapy (LRT) such as transarterial chemoembolization (TACE), radiation therapy (RT), or combination with LRT and sorafenib in this situation. Stereotactic body radiation therapy (SBRT) is new technology providing very highly conformal ablative radiation dose and is expected to salvage modality for HCC showed incomplete response of TACE due to combined arteriovenous (AV) shunts. Based on above suggestions, we herein offer our experience of a complete remission of tumor by combination of SBRT and TACE in a patient with infiltrative HCC. Further study, maybe regarding a combination of locoregional and systemic therapy is necessary on how to manage infiltrative HCC with AV shunts. (Journal of Liver Cancer 2015;15:64-69)
부신, 폐전이를 동반한 거대 간세포암 환자에서 경동맥 화학색전술, 방사선 치료, sorafenib을 병합하여 간내암과 부신전이의 완전관해를 경험한 1예
황상연 ( Sang Youn Hwang ),이선미 ( Seon-mi Lee ),임정우 ( Jung Woo Im ),김준석 ( Joon Suk Kim ),안상부 ( Sang Bu Ahn,),지은경 ( Eun Kyeong Ji ),최철원 ( Chul Won Choi ),양광모 ( Gwang-mo Yang ) 대한간암학회 2013 대한간암학회지 Vol.13 No.1
Extrahepatic metastasis (EHM) associated with hepatocellular carcinoma (HCC) has been increasing due to prolonged survival with recent advances in therapeutic approaches including locoregional therapy such as transarterial chemoemoblization (TACE), radiofrequency ablation and radiation therapy (RT). Though many guidelines recommended systemic therapy such as sorafenib in this situation, some clinicians or centers still select locoregional therapy because the survival improvement of 2 or 3 months by sorafenib is far from optimal. Moreover, some studies showed that complete and partial response of intrahepatic tumors can result in significant improvement of patient survival even in situation of EHM. Based on above suggestions, we herein offer our experience of a patient with complete remission of intrahepatic tumor and adrenal gland metastasis treated with combination therapy of TACE and RT and sorafenib. Further study, maybe regarding a combination of locoregional and systemic therapy (so called multidisciplinary approach), is necessary on how to manage HCC patients with EHM.
담관 침범을 동반한 저혈관성 간세포암종에서 경동맥화학색전술, 정위 체부 방사선 치료, sorafenib을 병합하여 부분관해를 경험한 1예
황상연 ( Sang Youn Hwang ),이선미 ( Seon Mi Lee ),임정우 ( Jung Woo Im ),김준석 ( Joon Suk Kim ),안상부 ( Sang Bu Ahn ),지은경 ( Eun Kyeong Ji ),최철원 ( Chul Won Choi ),양광모 ( Gwang Mo Yang ) 대한간암학회 2013 대한간암학회지 Vol.13 No.2
Hepatocellular carcinoma (HCC) patients with bile duct invasion have a poor prognosis because many do not receive effective treatment. Surgical resection is thought to be only option of curative treatment, increasing chance of survival, but it is possible to minor group of patients because of poor reserved liver function associated with underlying liver disease and obstructive jaundice. Therefore many clinicians or centers still select locoregional therapy such as transarterial chemoembolization (TACE), radiation therapy (RT) etc. Stereotactic body radiation therapy (SBRT) is new technology providing very highly conformal ablative radiation dose for a small numbers (1-5 fractions) of large fraction size and is expected to salvage modality for HCC showed incomplete response of TACE due to vascularity or accessibility of feeding artery. Based on above suggestions, we herein offer our experience of a patient with partial remission of tumor by combination therapy of TACE, SBRT and sorafenib. Further study, maybe regarding a combination of locoregional and systemic therapy (so called multidisciplinary approach), is necessary on how to manage HCC patients with bile duct invasion or sparse vascularity.