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해외연수 - 2010 조경수협회 오키나와 연수를 돌아보며..
김은익,Kim, Eun-Ik 한국조경수협회 2010 造景樹 Vol.114 No.-
2010년 1월 20일부터 24일까지 4박 5일간의 짧지 않은 해외연수를 무사히 마치고 돌아오며 므흣한 기분으로 고향행 버스를 탔다. 아마 최연소 협회원이 아닐까 하는 생각을 했다. 올해 31살이 되는 나로써는 이번 연수 참여 여부 때부터 고민이 많았었다. 모두 부모님 뻘 되는 어르신들과 5일간의 여정을 같이 한다는 게 걱정이 이만 저만이 아니었기 때문이었다. 아무리 좋은 동기와 의지가 있다지만 겉도는 연수는 좋은 성과를 거두지 못할 것 같았기 때문이다. 하지만 그런 우려는 오래 가지 못했다. 회장님을 비롯해 모든 회원 분들께서 자식같이 따뜻하게 대해주시고 기특하게 봐주셔서 기대 이상으로 편안하고 보람된 연수를 보냈다. 물론 아버지(김태곤 이사)를 배경에 업고 연수에 나선 터라 나 자신을 어필하기 쉬웠고 쉬이 관심을 끌 수가 있었고 여러 가지 면에서 아버지 혜택을 많이 봤지만, 또한 젊은 청년이 조경수를 접하고 열심히 일하고 활동하려는 모습이 기특해서 점수를 따지 않았나 싶기도 하다. 더욱이 이렇게 여행후기를 적게 되는 영광(?)을 갖게 되어 므흣하기 짝이 없다.
제올라이트와 구리 분말을 혼입한 모르타르의 기초 물성 평가
김일순 ( Kim¸ Il-sun ),이재욱 ( Lee¸ Jae-wok ),김우현 ( Kim¸ Woo-hyun ),최소영 ( Choi¸ So-yeong ),양은익 ( Yang¸ Eun-ik ) 한국구조물진단유지관리공학회 2023 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.27 No.2
본 연구에서는 제올라이트와 구리 분말이 동시에 혼입된 모르타르의 플로, 휨 강도, 압축 강도 및 염화물 침투 저항성을 평가하였다. 실험결과, 모르타르의 플로 값은 모든 배합에서 기준 배합보다 약 9% 이내로 감소하는 경향을 나타내었다. 모르타르의 휨 및 압축 강도는 재령 91일에 기준 배합보다 증가하는 경향을 나타내었다. 염화물 침투 저항성은 기준 배합보다 확산계수가 감소하는 경향을 나타냈다. 제올라이트의 포졸란 반응과 유효 물-결합재비 감소가 강도와 염화물 침투 저항성에 영향을 준 것으로 판단된다.
김일만,이창영,손은익,김동원,임만빈,김상표,Kim, Il-Man,Lee, Chang Young,Son, Eun Ik,Kim, Dong Won,Yim, Man Bin,Kim, Sang Pyo 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.3
Objective : We have currently changed treatment strategies to methotrexate(MTX)-based preirradiation chemotherapy with subsequent planned radiation for the initial therapy of primary central nervous system lymphoma (PCNSL). The aim of this study was to evaluate the results of treating PCNSL with chemotherapy plus radiotherapy (CRT) or radiotherapy(RT) alone. Method and Material : This study involved 10 females and 3 males patients with a mean age of 54.2 years. All patients underwent surgery, open(8 cases) or stereotactic biopsy(5 cases) for histological diagnosis. Eleven tumors were diffuse large B-cell lymphomas. Tumor volume change in the follow-up images and survival time were evaluated in patients treated with CRT and RT alone. In the beginning, two patients received ProMACE-Cytabom chemotherapeutic regimen, but did not complete the course and died of progressive tumor 8 and 9 months after diagnosis, respectively. One patient died at 6 months before chemotherapy. These three were excluded from the survival analysis. Five patients(RT group) completed full courses of cranial irradiation with or without boost. For the current combined modality treatment, high-dose MTXbased chemotherapy(systemic and intrathecal MTX, IV vincristine, and oral procarbazine) followed by whole brain irrdiation to 45Gy to tumor was introduced in 5 patients of CRT group. Result : A complete response was achieved in three of five who received RT only and in all of five who received CRT. All patients in CRT groups are in disease free status at a mean 23 months following therapy. The RT group patients refused any additional salvage therapy at tumor relapse and survived at mean 20 months from diagnosis. The Karnofsky performance status improved in eight of ten patients with treatment. The treatment toxicity included leukoencephalopathy in RT group and severe leukopenia, transient hepatitis, avascular necrosis of femoral head, hearing loss, and amenorrhea in CRT group, respectively. Conclusion : The combined modality therapy of MTX-based chemotherapy plus radiotherapy for PCNSL may enhance tumor response and improve patient survival. The patients who received CRT should be carefully followed up because of the higher risk of treatment-induced late neurotoxicity.
김일만,임만빈,김상표,이장철,손은익,김동원,김인홍 대한신경외과학회 1995 Journal of Korean neurosurgical society Vol.24 No.11
In order to obtain more accurate pathological diagnosis of the angiographically occult vascular malformations(AOVM) of the brain in the future and to examine the clinical, and radiological characteristics and management outcome of the AOVM, the authors retrospectively reviewed the 30 cases of AOVM in which patients were treated at our instituition during the past 11-year period. The pathological specimens were reexamined, and the lesions were reclassified according to the strict histopathological criteria. The clinical characteristics, radiological features, the difference between the clinical and pathological diagnosis and the management results were studied. There were 15 males and 15 females. The mean age at the time of diagnosis was 31 years, ranging from 3 months to 74 years. The clinical diagnosis were arteriovenous malfmation(AVM) in 18 cases, cavernous angioma in 11 and mixed lesion in 1. The pathologic diagnosis was AVM in 14 cases, cavernous angioma in 2, and unclassified lesion in 12. The common presenting symptoms were hemorrhage(53.3%), seizure(20.0%) and mass lesion(20.0%). Twenty four lesions were located at the supratentorial region,4 at cerebellum and 2 at pons. Most of the lesions were revealed as high density masses with minimal or no contrast enhancement on CT and a core of mixed signal intensity with a peripheral low signal intensity rim on T₂-weight MRI. Preoperative clinically significant recurrent hemorrhages were noted in 8 cases and one of them showed marked deterioration of the neurological functions a result of recurrent hemorrhage. Twenty-eight patients underwent surgery and all except one improved neurologically. Six patients initially presented with seizure showed improvement in seizure frequency after operation. One patient who had the lesion at the pons was managed by a radiosurgery and one patient who refused surgery was managed by a conservative method. The conservatively managed patient and another patient who was not found AVM at the hematoma cavity during initial operation rebled about 2 years later following diagnois and surgery. These findings suggest that the complete microsurgical excision, which prevents rebleeding and suppresses seizure act, represents the treatment of choice for patients with clinically symptomatic AOVM. Avoiding the injury of the vascular mass, obtaining sufficient biopsy specimen during surgery, together with careful histopathological observation of operative specimens through complete clinical-radiological-pathological context are necessary to obtain more accurate pathological diagnosis.
전자폐기물을 잔골재로 적용한 콘크리트의 역학적 특성에 관한 연구
김용무,최소영,김일순,양은익 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 논문집 Vol.22 No.2
The quantities of electronic waste have been increased rapidly, and was caused variety problems such as environmental pollution or dissipation of resource. So, it needed to development of recycling technology about heavy metal in the electronic waste. Meanwhile, filler material (concrete or mortar) was used for shielding radioactive waste, however, it did not used materials that it is proved radiation shielding performance. So, there is a lack of confidence in the shielding performance. Therefore, in this paper, mechanical properties of concrete was evaluated for the applicability using electronic waste as fine aggregate of filler material. From the test results, compressive and flexural strength and elasticity modulus and the micro pore in the 1μm range was significantly affected by substitution of electronic waste, however, it could be improved the performance by using mineral admixture as binder. So, it is shown that the electronic waste could be applicable as fine aggregate of filler material. 전자폐기물의 발생량이 급증하고 있고, 전자폐기물로 인한 환경오염 혹은 자원낭비등과 같은 문제를 야기하고 있다. 따라서 전자폐기물 안에 포함된 중금속을 재활용할 수 있는 기술 개발이 필요하다. 한편, 채움재(콘크리트 혹은 모르타르)는 방사성폐기물의 차폐를 위해 사용되나, 방사성 차폐 성능을 확보한 재료를 적용하고 있지 않다. 따라서 채움재는 차폐성능에 관한 신뢰가 부족한 상황이다. 그러므로 본 연구에서는, 전자폐기물을 채움재의 잔골재로 적용하기 위하여 콘크리트의 역학적 특성을 평가하였다. 실험결과, 압축강도, 휨강도, 탄성계수 및 1μm 영역의 공극이 상당히 영향을 받는 것으로 나타났으나, 광물질 혼화재를 결합재로 사용하면 성능이 개선되었다. 따라서 전자폐기물은 채움재의 잔골재로써 적용이 가능할 것으로 판단된다.
구리 분말과 피톤치드를 혼입한 모르타르의 기초 물성 평가
김일순 ( Kim¸ Il-sun ),김우현 ( Kim¸ Woo-hyun ),이재욱 ( Lee¸ Jae-wok ),최소영 ( Choi¸ So-yeong ),양은익 ( Yang¸ Eun-ik ) 한국구조물진단유지관리공학회 2023 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.27 No.2
본 연구에서는 구리 분말과 피톤치드가 동시에 혼입된 모르타르의 플로, 휨 강도, 압축 강도 및 염화물 침투 저항성을 평가하였다. 실험결과, 플로 값은 기준 배합 대비 약 2% 내외로 감소하거나 증가하는 경향을 나타내었다. 모르타르의 휨 및 압축 강도는 기준 배합과 유사한 경향을 나타내었다. 염화물 침투 저항성에서는 확산계수가 기준 배합보다 감소하는 경향을 나타내었고, 구리 분말의 혼입율이 증가할수록 확산계수가 증가하는 경향을 나타내었다. 중금속인 구리 분말이 전도체 역할을 하여 염화물 침투 저항성에 영향을 준 것으로 판단된다.