간세포암의 고주파 열치료 후 천자침 경로를 통한 전이 1례

조영완,박석주,진한영,김준영,이재익,강명주,박정하,윤정희,박성재,지삼룡,이연재,이상혁,설상영 인제대학교 2006 仁濟醫學 Vol.27 No.-

Radiofrequency ablation(RFA), as a form of minimally invasive therapy for hepatocellular carcinoma, has become an important treatment modality. Because of limitation of surgery, RFA has become standard therapy for hepatocellular carcinoma in some situations. But there are some complications of RFA such as bleeding, infection, hematoma, adjacent organ thermal damage including intestinal perforation, needle track seeding, and so on. There are few reports in the literature that systematically evaluate the incidence of needle tract seeding and its associated risk factors. And only 2 cases of needle tract seeding of hepatocellular carcinoma after RFA were reported in Korea. We report a case of needle tract seeding of hepatocellular carcinoma after RFA.

Distribution of the Fairy Pitta (Pitta nympha) in the South Korea: A focus on protected areas

Gil-Pyo Hong(홍길표),Jae-Hoon Kim(김재훈),Seul-Gi Seo(서슬기),So-Yeon Cho(조소연),Bo-Yeon Hwang(황보연),Jong-Hyun Park(박종현),Seung-Yeon Lee(이승연),Ga-Young Kim(김가영),Wan-Hee Nam(남완희),Ha-Cheol Sung(성하철) 한국조류학회 2021 한국조류학회지 Vol.28 No.2

국내 팔색조(Pitta nympha) 분포 현황을 알아보고자 전국 국립공원 등 보호지역 중심으로 총 19개 지역을 조사하였고, 전문가 네트워크를 통해 자료를 보강하였다. 전국 19개 지역을 조사한 결과 북한산, 지리산 등 내륙지역 7개 국립공원에서는 팔색조가 확인되지 않았고, 경남 거제, 남해, 해남, 장흥 고흥 등 남해안과 인접한 12개 지역에서 팔색조 서식이 확인되었다. 또한 전문가 네트워크를 통해 수집한 팔색조 출현 위치 정보 82건을 분석한 결과, 전국 8개 광역지자체 모두 팔색조 서식이 확인되었고, 내륙지역(26.8%)보다 해안지역(73.2%)에서 더 많이 출현하였다. 연구 결과를 종합해보면, 우리나라의 팔색조는 주로 제주도와 남해안 지역을 중심으로 많이 분포하며, 그 보다 적은 개체수가 내륙 지역에 넓게 분포하고 있는 것으로 나타났다. The present study investigated the current distribution of Fairy Pitta (Pitta nympha) in South Korea. A total of 19 study areas, including protected areas such as national and provincial parks in South Korea were surveyed, and additional data obtained from an expert network. According to the results, Fairy Pitta was absent in seven inland national parks, including Mt. Bukhan and Chiri parks. Fairy Pitta inhabited 12 areas near the southern coast of South Korea, including Geoje, Namhae, Haenam, Jangheung, Goheung, and Gyeongnam Province. The analysis results of 82 datasets obtained from experts with regard to the locations where Fairy Pitta have been spotted showed that the bird inhabits all the eight metropolitan regions in South Korea, and is more frequently spotted in coastal areas (73.2%) than in inland areas (26.8%). The findings demonstrate that Fairy Pitta is mainly distributed in Jeju Island and the southern coast of South Korea, and is distributed in inland areas at relatively lower numbers.

바터 팽대부에 생긴 유암종 1예

강명주,지삼룡,박석주,이재익,조영완,김준영,박성재,박은택,이연재,이상혁,설상영,배상균 인제대학교 2006 仁濟醫學 Vol.27 No.-

Carcinoid tumors have been reported in a wide range of organs but most commonly involve the lungs, bronchi and gastrointestinal tract. Within the gastrointestinal tract, appendix is the most common location for carcinoid, followed by the distal small intestine, the rectum, and the stomach. Among these, primary involvement of the ampulla of Vater is extremely rare. We report a case of carcinoid tumor of ampulla of Vater. A 62-year-old man presented with epigastric soreness. Gastroduodenal endoscopy showed hyperemic bulging mass on ampulla of Vater and diagnosed as carcinoid tumor by histologic finding, with immunohistochemical study. In ^(111)In-octreoscan, tumor had regional lymph node metastasis, but no evidence of distant metastasis. Pancreatoduodenectomy with lymph node dissection was performed.

TiO₂의 첨가가 SnO₂후막형 가스센서의 특성에 미치는 영향

박정은,정완영,이재현,이덕동 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1

SnO_(2)-TiO_(2)(Sb, Pt), as raw material for hydrocarbon gas sensors, was prepared by coprecipitation method. The suspension precipitated was dried at 110℃ in oven or by freeze-drying method. Conductive sensing material was synthesized by SbCl_(5) addition to precipitation solution. Drying method of suspension precipitated and added titanium dioxide plays a important role in characteristics of the thick films. Titanium dioxide was transformed from anatase or glass to rutile structure and this transformation affected the gas sensing characteristics of the thick film. Platinum added to the raw material at coprecipitation( as chloroplatinic acid VI hydrate ) improved the gas sensitivity to hydrocarbon gases.

하악골 전돌증 환자에서 양악 수술과 하악 단독 수술의술 후 안정성에 관한 연구

박재완,이은택,민승기,이동근 大韓顎顔面成形再建外科學會 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.5

Le-Fort I Osteotomy is considered by many surgeons to be a safe and predictable method for correcting various dentofacial deformities. However, there are controversial options concerning the stability of two-jaw surgery (Le-Fort I osteotomy and sagittal split ramus osteotomy) compared to single mandibular surgery (sagittal split ramus osteotomy). The purpose of this study was to evaluate the post-operative stability of mandible in two-jaw surgery and single mandibular surgery, to help the establishment of accurate treatment planning in patients with a skeletal class Ⅲ malocclusion. There were 15 patients who had been undergone two-jaw surgery and 20 patients who had been undergone single mandibular surgery. Lateral cephalograms of these 2groups ; Preoperation and immediate post-operation, postoperatively 1month, postoperatively 3months, at the latest follow up(>6months) ; were analyzed by linear measurement to evaluate changes in position (hard tissue B, Pogonion point) and compare repapse both group. The results obtained were as follows ; In view of B-point, the horizontal repapse rate of single mandibular surgery was 10.17% at post-op 1month, 12.52% at post-op 3months, 13.01% at post-op 6months and two-jaw surgery was 10.23% at post-op 1month, 11.84% at post-op 3months, 12.97% at post-op 1month, 11.33% at post-op 3months, 12.01% at post-op 6months in two-jaw surgery. In terms of vertical relapse rate, rates of B point were 22.96% at post-op 1month, 28.30% at post-op 3months, 29.56% at post-op 6months in single mandibular surgery and 21.14% at post-op 1month, 25.45% at post-op 3months, 28.86% at post-op 6months in two-jaw surgery. Those of Pogonion point were 26.63% at post-op 1month, 28.40% at post-op 3months, 29.29% at post-op 6months in single mandibular surgery and 20.20% at post-op 1month, 25.44% at post-op 3months, 27.68% at post-op 6months in two-jaw surgery. There were no statistical difference between single mandibular surgery and two-jaw surgery in mandibular stability.

PLT 절연층을 이용한 ZnS:Mn TFEL소자의 제조 및 특성

박욱동,박경빈,박재현,김영진,최병진,김기완 경북대학교 센서기술연구소 1995 센서技術學術大會論文集 Vol.6 No.1

Thin film electroluminescent(TFEL) device has been fabricated using ZnS:Mn phosphor and PLT insulator. The ZnS:Mn and PLT thin film for TFEL device was deposited by vacuum evaporation method and RF magnetron sputtering method, respectively. The TFEL device using ZnS:Mn(6000 Å) and PLT(1000 Å) thin films showed the threshold voltage of 50 Vrms at the driving frequency of 3 kHz. The brightness of TFEL device was 250 μW/cm^(2) at the applied voltage of 74 Vrms. Also the output current of TFEL device was linearly increased with applied voltage.

복합 병렬 전단벽 접합부의 전단강도

박완신,한병찬,황선경,윤현도,이재연,이원호 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

An theoretical study of the strength of hybrid coupled shear wall connections is achieved. The bearing stress at failure in the concrete below the steel coupling beam section is related to the concrete compressive strength and the ratio of the width of the steel coupling beam section to the width of the hybrid coupled shear wall. Also experimental studies are achieved to revise shear transfer strength across connections between coupled shear walls and steel coupling beam. The main test variables were auxiliary details of stud bolts. In this studies. these proposed equations are shown to be in good agreement with the test results reported in the paper and with other test data in the literature.

고정화된 TiO_2 광촉매를 이용한 암모니아 제거반응

박용완,김영철,신재순,박남국 全南大學校 觸媒硏究所 2002 觸媒硏究 論文集 Vol.23 No.-

Physical properties of TiO_2 photocatalyst prepared by sol-gel process and photodegradation behaviors of NH_3 gas over TiO_2 immobilized on glass bead were studied. The surface area and average pore size of photocatalyst C were 148.3m^2/g and 138.3A˚, respectively. The XRD patterns of TiO_2 photocatalyst prepared by sol-gel method which were calcinated 400℃ showed that the catalyst had almost an anatase structure. Optimum thickness of TiO_2 layer was 5㎛ and immobilization frequence was four times. TiO_2 glass bead immobilized by powder coating method was a little better effective than it prepared by sol-gel method, but restriction of supports and economy were less than it immobilized by sol-gel method. The highest treatment efficiency was obtained when the wavelenght of UV lamp was 254nm. The photodegradation efficiency compared with some commercial TiO_2 photocatalyts, TiO_2 photocatalyst prepared by sol-gel method in laboratory is better.

용접순서와 자중이 용접변형에 미치는 영향에 관한 연구

박정웅,강재완 朝鮮大學校 建設技術硏究所 2005 建設技術硏究 Vol.25 No.1

Welding deformations are affected by various factors. This research investigates effects of welding sequence and self-weight on welding deformation. According to the results by equivalence load method, magnitude of welding deformation with self-weight is about twice one without self-weight on parallel weld path component. But welding deformation with the components used in this research are not affected by welding sequence

고광택 모르타르 개발에 관한 연구

박승완,정재동 대구대학교 산업기술연구소 2008 産業技術硏究 Vol.19 No.-

The objective of this study is to investigate the degree of surface-glossing of cement mortar with kinds of compounds, contents and forms. According to the test results, degree of surface-glossing of cement mortar using High-effectiveness water-reducing agent is higher that no add High-effectiveness water-reducing agent. In mixing proportions, cement mortar made by mix proportion of 1:1(cement : sand) has the highest degree of surface-glossing. In case of surface-with the kind of the form made of acryl has the best performance among the form kinds tested in this experiment. Also, surface glossing-glossing get worse with the elapse of age.