대장직장종양에 있어서 Hand-Assisted Laparoscopic Surgery (HALS)의 초기 경험

조호영,최선근,구지회,허윤석,이건영,김세중,조영업,안승익,홍기천,신석환,김경래,우제홍 대한내시경복강경외과학회 2003 대한내시경복강경외과학회지 Vol.6 No.-

크론병에 대한 CoPPLX의 방어효과에 대한 연구

이호학,김유림,문창기,이재일,양병윤,김종수,이정민,정재혁,안석진,박상준,김윤권,김소연,김영중,조민구,최영자,장성조 圓光大學校 醫科學硏究所 2005 圓光醫科學 Vol.20 No.1

암석 슬러지를 이용한 건자재 개발

이필호,이구연,전철수,연규석,이윤수,인교진 강원대학교 부설 석재복합신소재 제품연구센터 2000 석재연 논문집 Vol.5 No.-

본 연구는 1993년부터 춘천시 신동면 형돌리 산 62번지 내에서 흑운모 화강암 및 편마암 암석을 원자재로 사용하여 건설기초재료인 쇄설골재 및 인공모래를 생산하는 업체로부터 제품 생산 후 발생하는 토양 스러치 케익이 연간 약 10만 입방정도 발생한다는 사실에 기초하여 석산에서 채취된 페잔토(석분)의 화학적, 물리적, 역학적 특성을 조사하여 석분의 이용 가능성을 확인하기 위한 실험으로 단위 시멘트량을 400kg, 잔골재율을 45% 그리고 물-시멘트비를 65%로 고정하고 잔골재 중 석분을ㄹ 0%, 10%, 20%, 30%, 40%, 50% 및 60%로 치환하여 제조된 콘크리트의 기초적 성질을ㄹ 시험하였다. 그 결과 석분의 치환율이 높을 수록 공기량은 증가하고 슬럼프값이 감소하였는데 이는 미세한 입자인 석분을 잔골재의 일부로 치환함으로써 비표면적이 증가하였기 때문인 것으로 사료된다. 압축강도와 휨강도는 모두 석분의 치환율이 증가할수록 압축강도와 휨강도는 다소 감소하는 경향을 나타냈으나 큰 성능차이는 보이지 않는 다는 것을 알 수 있었다. 이상의 실험을 통해 석분을 시멘트 콘크리트에 사용했을 경우 약간의 성능저하는 있지만 잔골재로의 활용이 가능하다는 것을 알 수 있었다. 그러므로 앞으로 건조수축, 균열, 크리이프 특성 및 내구성에 과한 연구가 더욱 심도있게 이루어져야 폐자원인 석분의 이용이 가능하리라 판단된다. This study aims to make cement concrete using crushed stone fines which are produced at Chuncheon city, Hyuldongri and find it's applications. According to the experimental results, when ratio of crushed stone fines was increased, air contents were increased and slump values were decreased. Also, the compressive strength and flexural strength were decreased when ration of crushed stone fines was increased. Although these strengths are decreased, the crushed stone fines can be used to construction materials because the decreased amounts are not so much.

폴리머 시멘트 콘크리트의 동결융해 저항 특성 연구

이필호,이구연,전철수,연규석 강원대학교 부설 석재복합신소재 제품연구센터 2000 석재연 논문집 Vol.5 No.-

본 연구에서는 폐재자원인 광미를 잔골재의 일부로 사용하여 폴리머 시멘트 콘크리트를 제작하고 강도 특성 및 동결융해저항 특성을 실험적으로 구명하였다. 압축강도는 광미 혼입유물에 따라 262.5kg/㎠에서 422.9kg/㎠, 250kg/㎠에서 386.4kg/㎠로 증가하였으며, 휨강도는 44kg/㎠에서 107kg/㎠, 41kg/㎠에서 104kg/㎠로 증가하는 경향을 보였다. 이 결과 폴리머-시멘트비가 증가할수록 항도가 증대됨을 알 수 있으며, 광미를 사용할 경우 광미의 첨가로 내부 공극의 감소됨으로써 약간 증가된 것으로 판단된다. 폴리머 시멘트비가 0%일 경우 흡수율은 광미 무혼입의 경우 6.1%보다 광미 혼입의 경우 5.61%로 다소 낮은 값을 얻었으며, 폴리머 시멘트비가 20%일 경우에도 광미 무혼입의 경우 0.82%보다 광미 혼입의 경우 0.58%로 낮은 값을 얻을 수 있었다. 이 결과 폴리머 시멘트비가 증가할수록 흡수율이 작아졌으며, 폴리머를 혼입한 경우 흡수율이 48시간 동안 지속으로 증가함을 알 수 있었다. 폴리머 시멘트비가 5%에서 광미 무혼입의 경우 100.8%, 광미 혼입의 경우 106.6%로 가장 높은 상대 동탄성 계수를 얻어 폴리머의 혼입으로 인해 내구성이 향상되었음을 알 수 있었으며, 광미를 혼입함으로써 높은 상대 동탄성 계수를 얻을 수 있음을 알 수 있다. 폴리머 시멘트비가 5%에서 내구성 지수가 광미 무혼입의 경우 100.8%, 광미 혼입의 경우 106.6%로 크게 증가하였음을 알 수 있었고, 폴리머를 첨가한 경우에 있어서 내구성 지수가 상당히 높은 값을 나타냄을 알 수 있었다. Metal-mine tailing was added as a source of fine aggregate for polymer cement concrete(MTPCC) which was investigated with respect to the properties of strength and the resistance of freezing and thawing. Strength of MTPCC was improved over olymer cement concrete(PCC). It was believed that the addition of metal-mine tailing decreased the porosity of the fine aggregates to improve strength of the polymer cement concrete. It was found that the resistance to freezing and thawing of MTPCC was improved over PCC.

가교화 쌀 전분의 이화학적 특성

최현욱,정구민,김정호,문태화,박천석,백무열 경희대학교식량자원개발연구소 2007 硏究論文集 Vol.26 No.1

급성 A형 간염에 병발한 급성신부전 2 례

홍수민;박경식;박일권;손형래;구호석;고행일 인제대학교 2011 仁濟醫學 Vol.32 No.-

Hepatitis A is a mild, self-limiting disease of the liver, critical complications of which, such as acute kidney injury, are rare. Two cases of patients with acute hepatitis A who had an acute renal failure complication are reported herein. The first case is that of a 30-year-old man who showed up at the author’s hospital complaining of fever and myalgia. His laboratory tests upon his admission showed 9,520 lU/L of aspartate transaminase, 5,600 lU/L of alanine transaminase, 31.9 mg/dL of blood urea nitrogen, and 5.5 mg/dL of creatinine, and he was positive for the Anti-HAV IgM antibody. Upon his admission, supportive treatment was started, which included fluid therapy. The laboratory tests on the next day showed 53 mg/dL of blood urea nitrogen, 9.9 mg/dL of creatinine, and lower urine output per day. Renal replacement therapy was performed only once. A renal biopsy was performed and the result was Acute Tubular Necrosis (ATN). The patient recovered from acute renal failure without sequela. In the second case, a 35-year-old man complained of fever and abdominal pain. His laboratory tests upon his admission showed 8,570 lU/L of aspartate transaminase, 4,510 lU/L of alanine transaminase, 16 mg/dL of blood urea nitrogen, and 1.19 mg/dL of creatinine, and he was positive for the Anti-HAV IgM antibody. He experienced acute renal failure and recovered after two-time renal replacement therapy. The result of the renal biopsy was Acute Tubular Necrosis and C1q nephropathy.

육안적 혈뇨로 내원한 환자에서 발견된 방광 유전분증 : 증례보고

김은진;성 현;홍수민;정성연;박경식;손형래;박일권;구호석;고행일 인제대학교 백병원 2011 仁濟醫學 Vol.32 No.-

Amyloidosis is a disease resulting in deposition of amyloid in the body. The disease can be either primary or secondary. The amyloidosis of urinary bladder is more usually affected by primary amyloidosis and also very rare. The patient with primary amyloidosis of the bladder usually presents with gross hematuria. The amyloidosis resembles bladder cancer in cystoscopy. It can be confirmed by biopsy. The treatment consists of medication (e.g., steroid, antitumor agent, cholchicine, DMSO) and/or transurethral resection. The standard treatment is mephalan and prednisolone. A 49-year-old man complained of recently developed gross hematuria without abdominal pain. We examined urinary bladder cystoscope for gross hematuria. It revealed small bulging mass on trigone are a of bladder. Therefore we did bladder biopsy. Finally, it revealed bladder amyloidosis. The patient was improved by medication (mephalan 2mg and prednisolone 1 mg/kg po daily). We report an unusual case of amyloidosis involving bladder.

Management of Contralateral N0 Neck in Pyriform Sinus Carcinoma

Koo, Bon-Seok,Lim, Young-Chang,Lee, Jin-Seok,Kim, Young-Ho,Kim, Se-Hoon,Choi, Eun-Chang 충남대학교 암연구소 2007 암연구소 업적집 Vol.6 No.-

Objective: The hypopharynx has a rich lymphatic network that places patients with tumors of the hypopharynx at high risk for early dissemination of the disease into the cervical lymphatics. Therefore, ipsilateral elective neck dissection of clinically N0 neck in lateralized lesions of hypopharyngeal squamous cell carcinomas (SCCs) is widely accepted as a standard treatment. However, the management of the contralateral N0 neck is still controversial. The aim of this study was to evaluate the incidence and predictive factors of contralateral occult lymph node metastasis in pyriform sinus SCC. Materials and Methods: We performed a retrospective analysis of 43 patients with N0 to 3 pyrifonn sinus SCC with contralateral clinically node-negative necks who had also received contralateral elective neck dissections from 1994 to 2003. Surgical treatment was followed by postoperative radiotherapy in 41 patients. The follow-up period ranged from 4 to 135 months (mean, 40 months). The Kaplan-Meier method and log-rank test were used to calculate the disease-specific survival rates and prognostic significance of contralateral occult lymph node metastasis. Results: Contralateral occult lymph node metastases occurred in 16% (seven of 43) of the subjects. Twenty-six percent of the 27 subjects with clinically node-positive ipsilateral neck developed contralateral occult lymph node metastases, whereas 0% of the 16 subjects with NO ipsilateral necks (P = .035) developed the disease. Moreover, in cases with primary site extension across the midline, the rate of contralateral occult neck metastasis was significantly higher (P = .010). However, there were no statistically significant differences in age, sex, early versus advanced T stage, number of ipsilateral positive nodes, lymph nodes with extracapsular spread, primary subsite of medial versus lateral pyrifonn sinus, pyrifonn sinus apex involvement, and growth type. Patients with no evidence of contralateral nodal cancer had significantly improved disease-specific survival over patients with any pathologically positive nodes (15-year disease-specific survival rate, 66% vs. 33%, P < .05). Conclusion: The patients with pyrifonn sinus SCC with clinically ipsilateral N+ neck and/or extension across the midline are at greater risk for contralateral occult neck metastases. Furthermore, patients who present with a contralateral metastatic neck have a worse prognosis than those staged as N0. Therefore, we advocate bilateral neck treatment in patients with pyriform sinus SCC with clinically ipsilateral node metastases and/or extension across the midline. Key Words: Pyriform sinus, squamous cell carcinoma, lymphatic metastasis, neck dissection. Laryngoscope, 116:1268-1272, 2006

Should the patients with small airway disease by spirometry have the preoperative consultations by pulmonologist? (초)

( Koo Ho Seok ),( Lee Seung Heon ),( Lee Young Min ),( Lee Hyuk Pyo ),( Yum Ho Kee ),( Choi Soo Jeon ),( Park I Nae ),( Jung Hoon ),( Choi Sang Bong ),( Hur Jin Won ),( Kim Hyun Kook ),( Lee Hyun Kyun 대한내과학회 2008 대한내과학회 추계학술대회 Vol.2008 No.-

Introduction of Power Plant Engineering

Seok-Koo Kim,Suk-Jae Jung,Yeong-Seok Lee,Cheol-Ho Yang 한국강구조학회 2013 Steel Construction Vol.- No.5