• 한국연소학회:학술대회논문집
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• 한국연소학회 1998년도 제17회 KOSCI SYMPOSIUM 논문집
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• pp.79-84
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• 1998

In this paper we show design and operation of 1MWth pulverized coal combustion test facility. The test facility is consists of coal feeding system, furnace and flue gas treatment system. The furnace is equipped with a top-fired burner in order to avoid influence of gravity on the coal particles. There are two part of vertical(VP) and horizontal pass(HP) at furnace. We can measure temperature and species of coal flames in vertical pass. Also, there is horizontally arranged section where investigation regarding corrosion and deposit formation will be carried out. The burner of combustor was externally air staging burner(EASB) type made by IFRF. The pulverized high bituminous(Blair athol) coal from Australia was used as fuel, and the particle size less than 80 ${\mu}m$ was 83.4%. Overall excess air ratio was 1.2.

• Journal of Korean Neurosurgical Society
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• 제62권2호
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• pp.136-143
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• 2019

Moyamoya disease (MMD) is a progressive cerebrovascular disease with unknown etiology, characterized by bilateral steno-occlusive changes at the terminal portion of the internal carotid artery and an abnormal vascular network formation at the base of the brain. MMD has an intrinsic nature to convert the vascular supply for the brain from internal carotid (IC) system to the external carotid (EC) system, as indicated by Suzuki's angiographic staging. Insufficiency of this 'IC-EC conversion system' could result not only in cerebral ischemia, but also in intracranial hemorrhage from inadequate collateral anastomosis, both of which represent the clinical manifestation of MMD. Surgical revascularization prevents cerebral ischemic attack by improving cerebral blood flow, and recent evidence further suggests that extracranial-intracranial bypass could powerfully reduce the risk of re-bleeding in MMD patients with posterior hemorrhage, who were known to have extremely high re-bleeding risk. Although the exact mechanism underlying the hemorrhagic presentation in MMD is undetermined, most recent angiographic analysis revealed the characteristic angio-architecture related to high re-bleeding risk, such as the extension and dilatation of choroidal collaterals and posterior cerebral artery involvement. We sought to update the current management strategy for hemorrhagic MMD, including the outcome of surgical revascularization for hemorrhagic MMD in our institute. Further investigations will clarify the optimal surgical strategy to prevent hemorrhagic manifestation in patients with MMD.

• 한국패류학회지
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• 제25권1호
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• pp.29-33
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• 2009

This study devised and tested a histological staging system for gonadal development in the trumpet shell, Charonia sauliae, which was collected along the south coast of Jeju Island, South Korea. This paper details for the first time the gonadal development characteristics of C. sauliae. Ovary and testis development in C. sauliae can be roughly divided into five stages: growing, mature, spent, degenerative, and resting. The trumpet shelll has multiple fecundation and fertilization during the spawning season for out-of-step gonadal development in high-temperature and low-salinity environments. Female trumpet shell tended to have larger shells and were more abundant than males (64.26% of all animals collected were female).

• 혜화의학회지
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• 제14권2호
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• pp.189-195
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• 2005

Purpose: The purpose of this case study is to report the effect of just oriental treatments to the breast cancer. Methods: A 37-year-old woman had breast cancer of stage II according AJCC staging system, but she dosen't want be operated for a tumor. So, she was treated with herbal medicine, acuputure, moxa, patch made from herb medicine and depletion for four weeks. In herbal theraphy sihosogansan and saengmaksan. The patch made from herb medicine is put on the skin of the cancer. Depletion is done on the breast cancer, too. In acuputure theraphy, Sojangjeonggyeok(小腸正格) was used. In Moxa theraphy Chungwan, Kwanwon were used. Results: After oriental medicine for 27 days, she was on the mend about the size, complexion, solidity and pain of the breast cancer. Conclusion: This study shows that breast cancer is improved if only oriental treatments. But after this, further approach and studys on the breast cancer.

• 대한치과의사협회지
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• 제57권12호
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• pp.758-767
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• 2019

The classification of periodontal disease in 1999 has been widely used for determining a diagnosis, establishing a treatment plan, and evaluating the prognosis of the patient with periodontal disease. However, scientific evidence from many studies indicates the need for a new classification system for periodontal and peri-implant disease. Summary at 2017 world workshop as follows: 1) Periodontal health and peri-implant health was defined; 2) Chronic periodontitis and aggressive periodontitis were unified as periodontitis; 3) Periodontitis was further classified by staging and grading to reflect disease severity and management complexity, rate of disease progression, respectively; 4) Periodontal disease as manifestation of systemic disease is based on the International Statistical Classification of Diseases and Related Health Problems-10 (ICD-10) code; 5) Periodontal biotype and biologic width was replaced to periodontal phenotype and supracrestal tissue attachment, respectively; 6) The excessive occlusal force was replaced by a traumatic occlusal force; 7) ≥3 mm of radiographic bone loss, ≥6 mm of pocket probing depth and bleeding on probing indicates peri-implantitis in the absence of radiograph at final prosthesis delivery.

• Journal of Digestive Cancer Research
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• 제1권2호
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• pp.73-77
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• 2013

Gastrointestinal (GI) cancers are top priorities for cancer control in Korea. In terms of epidemiological, population-health and economic burden, GI cancers such as stomach, liver and colorectal cancers have been top four cancers in the nation during the past decade and this trend is likely to continue in the near future. In order to reduce the great burden of GI cancer in Korea, the nation might need the following strategies: (1) to put more focus on primary prevention on infection/diet and related research; (2) to improve screening rates for colorectal and stomach cancers, and conduct more cost-effectiveness analysis of these screening programs, e.g., Fecal Occult Blood Test vs. colonoscopy; (3) to establish a more consistent and integrative cost-effectiveness analysis system for new cancer treatments and anticancer drugs; and (4) to place more emphasis on hospice and other palliative care of GI cancer, as well as on the etiology, staging and treatment of pancreas cancer with its poor survival rate.

• Korean Journal of Radiology
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• 제23권6호
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• pp.625-637
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• 2022

With regard to the indolent clinical characteristics of prostate cancer (PCa), the more selective detection of clinically significant PCa (CSC) has been emphasized in its diagnosis and management. Magnetic resonance imaging (MRI) has advanced technically, and recent international cooperation has provided a standardized imaging and reporting system for prostate MRI. Accordingly, prostate MRI has recently been investigated and utilized as a triage tool before biopsy to guide tissue sampling to increase the detection rate of CSC beyond the staging tool for patients in whom PCa was already confirmed on conventional systematic biopsy. Radiologists must understand the current paradigm shift for better PCa diagnosis and management. This article reviewed the recent literature, demonstrating the diagnostic value of pre-biopsy prostate MRI with targeted biopsy and discussed unsolved issues regarding the paradigm shift in the diagnosis of PCa.

• Asian Pacific Journal of Cancer Prevention
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• 제15권21호
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• pp.9487-9494
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• 2014

Background: The size of a hepatic neoplasm is critical for staging, prognosis and selection of appropriate treatment. Our study aimed to compare the radiological size of solid hepatocellular carcinoma (HCC) masses on magnetic resonance imaging (MRI) with the pathological size in a Chinese population, and to elucidate discrepancies. Materials and Methods: A total of 178 consecutive patients diagnosed with HCC who underwent curative hepatic resection after enhanced MRI between July 2010 and October 2013 were retrospectively identified and analyzed. Pathological data of the whole removed tumors wereassessed and differences between radiological and pathological tumor size were identified. All patients were restaged using a modified Tumor-Node-Metastasis (TNM) staging system postoperatively according to the maximum diameter alteration. The lesions were classified as hypo-staged, iso-staged or hyper-staged for qualitative assessment. In the quantitative analysis, the relative pre and postoperative tumor size contrast ratio ($%{\Delta}size$) was also computed according to size intervals. In addition, the relationship between radiological and pathological tumor diameter variation and histologic grade was analyzed. Results: Pathological examination showed 85 (47.8%) patients were overestimated, 82 (46.1%) patients underestimated, while accurate measurement by MRI was found in 11 (6.2%) patients. Among the total subjects, 14 (7.9%) patients were hypo-staged and 15 (8.4%) were hyper-staged post-operatively. Accuracy of MRI for calculation and characterized staging was related to the lesion size, ranging from 83.1% to 87.4% (<2cm to ${\geq}5cm$, p=0.328) and from 62.5% to 89.1% (cT1 to cT4, p=0.006), respectively. Overall, MRI misjudged pathological size by 6.0 mm (p=0.588 ), and the greatest difference was observed in tumors <2cm (3.6 mm, $%{\Delta}size=16.9%$, p=0.028). No statistically significant difference was observed for moderately differentiated HCC (5.5mm, p=0.781). However, for well differentiated and poorly differentiated cases, radiographic tumor maximum diameter was significantly larger than the pathological maximum diameter by 3.15 mm and underestimated by 4.51 mm, respectively (p=0.034 and 0.020). Conclusions: A preoperative HCC tumor size measurement using MRI can provide relatively acceptable accuracy but may give rise to discrepancy in tumors in a certain size range or histologic grade. In pathological well differentiated subjects, the pathological tumor size was significantly overestimated, but underestimated in poorly differentiated HCC. The difference between radiological and pathological tumor size was greatest for tumors <2 cm. For some HCC patients, the size difference may have implications for the decision of resection, transplantation, ablation, or arterially directed therapy, and should be considered in staging or selecting the appropriate treatment tactics.

• 한국임상수의학회지
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• 제22권3호
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• pp.264-267
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• 2005

구토와 식용부진을 3일전부터 나타내고, 2년전부터 좌측 후지 상부에 종괴를 갖고 있는 12년령, 8.0kg, 난소 제거 잡종 암캐 1두가 충남대학교 부속동물병원에 내원하였다. 환자는 fine-needle aspiration (FNA) 세포진단학 검사에 의하여 mast cell tumor로 진단하였다. Mast cell tumor 진단을 위한 WHO clinical staging system에 의하여 stage IIIa로 분류하였다. 환자는 adjuvant corticosteroid 요법에 의하여 투약되었으며, 축주의 요구에 의하여 완전 외과 절제는 실시하지 아니 하였다. 초기에 adjuvant corticosteroid 단독 요법에 의하여 종괴의 크기가 점차 감소하였으며, 환자의 전신상태는 호전되었다. 그러나 그 후에는 더 이상 glucocorticoid에 반응을 하지 아니 하였으며, 종괴의 크기가 증가하였고, 2개월 후에 간헐적 구토와 심한 호흡곤란 때문에 안락사 하였다. 비장 종괴, 십이지장 궤양, 간 종괴와 후지 상부 근육부위에 침윤된 mast cell tumor가 부검 시에 발견되었다. Mast cell tumor는 grade I 또는 II에서 그리고 .조직학적으로 well-differentiated된 상태에서 외과적 완전절제, 방사선요법, adjuvant corticosteroid 요법, 화학요법을 병용 하여야 양호한 예후를 나타낼 것으로 기대된다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2008년도 정기학술발표대회 논문집
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• pp.197-201
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• 2008

국내 도로건설사업은 평균 단가 기준으로 개략공사비를 산정한다. 도로의 기초자료를 갱신함으로써 평균 단가를 수정하고 있으나 공사 특성을 전부 반영하기에는 미흡한 실정이다. 설계 진행단계에서 설계 대안을 평가하는데 활용할 수 있는 공사비 예측모델의 필요성이 제기되는 가운데 대표공정을 통해 표준물량을 산출하고 개략공사비 산정모델개발을 통해 실질적인 공사비 예측이 가능한 모델을 개발하고자 한다. 본 연구에서는 Prestressed Concrete Box Girder Bridge의 상부공사를 중심으로 연구를 수행하며 $2000{\sim}2007$년 사이에 수행되었던 구조물공 41건에 대한 기초자료를 수집하고 토목공사 수량산출기준에 의한 내역서를 기반으로 Grouping을 실시하여 대표적 특수교량인 ILM(Incremental Launching Method), MSS(Movable Scaffolding System), FSM(Full Staging Method), 그리고 FCM(Free Cantilever Method)등 교량 형식별로 총공사비에서 공사비 비중 및 해당 공종에서의 중요도가 높은 항목을 중심으로 설계 초기단계에서 가용한 정보 수준을 고려하여 대표공종 선정한다. 교량 형식별 선정된 대표공종을 살펴보면 P.S.C 강재설치 및 긴장작업/P.S.C BOX/자재대 및 자재운반비/철근가공 및 조립/증기양생/콘크리트 타설/거푸집/교면 방수/동바리 등 교량형식별 특수성을 제외하면 대표공종들이 순공사비에서 차지하는 비중이 비슷함을 알 수 있다. 공종들이 총공사비에서 차지하는 비율은 ILM(99.47%)/ MSS(99.22%)/ FSM(98.18%)/ FCM(98.12%)로 나타났다.