새열기형의 임상적 고찰

김장묵,김대식,백승혁,한동렬,김희중,백병준,오천환 순천향의학연구소 2000 Journal of Soonchunhyang Medical Science Vol.6 No.2

Background and Objectives : Branchial cleft anomalies are encountered rarely in clinical practice. We reviewed medical records of branchial cleft anomalies according to age and sex distribution, site distribution, characteristics of mass on physical examination, location of mass, preoperative diagnosis, type of branchial cleft cyst and report our experience with 25 cases of branchial cleft anomalies. Materials and Methods : A review of medical records was performed on 25 cases of branchial cleft anomalies diagnosed in pathologic report from January, 1990 to March, 2000. Result : Sex distribution was 11 male and 14 female, age distribution was most common in third decade which was 8 cases(32%). Site distribution was predominant in left side(13 cases), and in physical examination, the characteristics of the mass was nontender(76%), mobile(60%), soft(80%). The lesion site was submandibular area in 2 cases, upper 1/3 portion of sternocleidomastoid muscle(SCM) in 2 cases, middle 1/3 portion of SCM in 20 cases and parotid area in 1 case. The preoperative diagnosis was branchial cleft cyst in 16 cases, cervical lymphadenitis in 3 cases, tuberculous lymphadenitis in 3 cases, branchial cleft fistula in 1 case, dermoid cyst in 1 case and parotid mass in 1 case. Among 25 cases, first branchial cleft cyst was seen in 4 cases, second branchial cleft cyst in 20 cases and second branchial cleft fistula in 1 case. Conclusion : The clinical history of recurrent neck inflammatory episodes in young patients and nontender, mobile, soft neck mass should raise the suspicion of this entity. Investigation using CT scanning in combination with aspiration is useful. Treatment of all branchial cleft anomalies is complete surgical excision because there is lack of spontaneous regression, a high rate of recurrent infection, the possibility of other diagnosis, and rare malignant degeneration. Complete removal without complications depends on a good understanding of regional embryogenesis, a knowledge of the surrounding structure, and awareness of the different anatomical presentation.

중국 및 중국인에 대한 사회인식 : 한국인과 중국조선족의 가치비교 A Comparison of Korean and Chinese-Korean's value

손장권,김응렬,유지열 고려대학교 한국학연구소 1994 한국학연구 Vol.6 No.-

지금부터 1세기를 전후하여 이주한 한국민족들은 중국사회에서 새로운 생활터전을 마련해왔다. 최근 중국과의 교류확대에 따른 중국인 및 중국사회에 대한 관심증대는 중국에 거주하는 우리민족의 존재를 새롭게 확인시켜주고 있다. 중국조선족들에 대한 관심은 공동운명체로서 민족통합에 대한 열망 뿐 아니라 새로운 관계설정을 모색하는 중국과 의 교류에서도 중요하게 인식되고 있다. 본 연구에서 볼 때 한국인과 중국조선족들의 가치인식은 유사한 경향이 지배적이지만 차이점들도 제법 존재한다. 중국조선족들은 비록 중국사회에서 거주하지만 한국민족으로서의 특징을 유지하며, 민족적 자부심을 견지하고 있다. 한국인들도 중국조선족에 대해서 동일민족으로서 강한 민족적 정체감을 갖고 있다. 비록 장시간의 교류부재로 인한 상호이해부족과 사회적 거리감이 존재하지만 크게 우려할 수준은 아니다. 중국사회 및 중국인들에 대해 한국인들과 조선족들 사이에 차이가 확인되었다. 한국인들은 중국사회에 대해 부정적인 반면 조선족들이 긍정적인 견해가 지배적이다. 중국인들에 대해서도 중국조선족들이 한국인에 비해 긍정적인 태도를 보여주고 있다. 또한 한국인이나 중국조선족 모두 한중관계의 한중간의 선린우호관계의 확대와, 이 과정에서 조선족의 역할을 긍정적으로 기대한다. 특히 조선족들의 경우는 매우 강한 희망을 표출하여 한국인들과 대조를 이룬다. 본 연구는 중국조선족과 한국인의 민족적 통합은 희망적임을 암시한다. 또한 한국인들의 중국과의 관계설정시 중국사회에 대한 보다세심한 주의를 요구한다. 그리고 한중간의 관계중대시 중국조선족이 큰 역할을 할 것으로 여겨진다. 그리고 이러한 과제들의 달성을 위해서는 상호간의 교류확대와 이해증진이 필수적인 것으로 확인되었다. Because of Newly emerging relationship between Korea and China, we are interested in China and Chinese-Korean. Although their immegration history on Chinese land isn't long, Chinese-Korean are successfuly settled as a minority group. According to survey, Chinese-Korean identify themselves with Korean very strongly, and so do Korean. But, Korean and Chinese-Korean have different views of Chinese Society and Chinese. Chinese-Korean have more positive attitudes of Chinese society and Chinese than Korean. Chinese-Korean and Korean are expecting more close relationships between Korea and China. Also, they hope for much roles of Chines-Korean for the development of Korea and China. Chinese-Korean want to be identified as a Korean and expect themself to do some roles for Korea. However there is a social distance in the relations between Korean and Chinese-Korean because of different social experiences for the past 50 years. It is necessary to narrow e gap between them in terms of social distance. This Survey have some implications. First, national reunion of Korean and Chinese-Korean isn't very difficult until now. So we are required of more real steps in order to achieve national integration and development. Second, We don't know Chinese society and Chinese in detail. So making a new relationship with China, we need more careful examination and provision.

Wetting에 의한 필댐 상류측 shell의 거동특성

임희대,백장열,이영섭 충남대학교 산업기술연구소 1999 산업기술연구논문집 Vol.14 No.2

The primary objective of this paper is to see the behavior characteristics of rockfill dam due to wetting. There are many factors which affect the dam failure. One of them is the influence of reservoir filling. Differential movements in dam and foundation develop during reservoir filling, they induced cracking and consequent erosion, and sometimes caused dam failure. One of the major factors contributing to the development of differential movements during reservoir filling is the compression due to wetting which occurs in a wide variety of different types of soils including rockfill. To perform the numerical analysis of dam behavior adequately, the large-scaled triaxial test is needed to consider the effect of wetting on dry and wet rockfill material. But, As the large-scaled triaxial test is high capital cost and not available apparatus for a number of other experiment, it is not applied many case in the country. In this paper, the data of Oroville dam which performed the large-scaled triaxial test is referenced to find out stress-strain curve and hyperbolic parameters on wetting for modeled dam which is not performed the large-scaled triaxial test. So, effect of wetting on modeled dam can be considered for numerical analysis of dam behavior. As a result of numerical analysis, they estimate that horizontal and vertical displacement are increased with the rate of increasing wetting, and shear stress too. Because compression and shear strength is decreased with proceeding wetting. And results of analysis show that load transfer is not affect significantly by the wetting.

천안백석매립장을 중심으로 한 메탄가스 발생량에 관한 연구

정진도,김장우,정인권,배찬열 한국환경과학회 2004 한국환경과학회지 Vol.13 No.7

Most of methane gas result from waste matter in landfill, therefore the persons concerned take an increasing interest in management of gases in landfill. Infrared Gas Analyzer was used to measure components of gases, CH₄,CO₂, O₂, through gas exhausted pipe. To measure amount of the gas flow meter(Portable Hot-Line Current Meter) was used and it was set at right angles with direction of the flow. In this research the total amount of methane gas produced in Beck-Suk Landfill was calculated through FOD method suggested by IPCC. This research found that in Chon-An Beck-Suk Landfill anaerobic resolution was made actively and the amount of methane gas produced there was 54.14%, which is higher than common figure, 50%, in other researches. The components of reclaimed waste matter, especially, organic waste matter can have a great effect of the amount of the greenhouse gases produced in landfill. We can expect that the amount of greenhouse gas will decrease from 2005, when it will be prohibited from carrying kitchen refuse and sludge into landfill.

배관내에서 자유수면 와동에 관한 연구

김상녕,이종원,오율권,장완호 慶熙大學校 1991 論文集 Vol.20 No.-

During mid­loop operation of nuclear power to prevent the residual heat removal system from failure due to air entrainment of free surface vortex in the piping system a set of simulating experiments was performed. Through these experiments, a relation between the non­dimensionalized numbers, such as submergence H/d. Froude number, Reynolds number, was found. However, the effect of the Reynolds number is not so dominant as that of the Froude number. It was also found that the boundary conditions of the free surface, that is, the perturbation of the free surface due to opening of closing pump and valves have significant effects on the free surface vortex. Futhermore a modified inlet device which reducer type with vortex breaker has strongly been recommended for the prevention of air entrainment.

열형광 CaSO₄ : Dy 소자의 최적 제조조건에 관한 연구

양정선,장시영,김장렬,김두영,남영미,박재우 濟州大學校 産業技術硏究所 2000 산업기술연구소논문집 Vol.11 No.1

An experimental investigation has been performed to determine optimal conditions for preparing the thermoluminescent CaSO_(4):Dy pellets which have been widely used as personal radiation dosimeter material. Our investigation has shown that an optimal weight concentration of the dopant Dy in the bulk CaS0_(4):Dy is 0.1 mol%. and an optimal temperature of adding Dy in the preparing process is 320℃. An optimal time and temperature for sintering the CaSO_(4):Dy crystal produced from the chemical process are found to be 2 hours and 800℃. respectively. The maximum thermoluminescent sensitivity was observed when the CaSO_(4):Dy crystal was pulverized to grain sizes of 63 - 200 m in diameter before being fabricated into pellets. The commercial Teflon was selected as an adhesive for the fabrication of the CaSO_(4):Dy pellets with an optimal mixing ratio of the Teflon and CaSO_(4):Dy being 70 to 30 in weight.

열형광 CaSO₄:Dy 소자의 최적 제조조건에 관한 연구

김장렬,남영미,장시영,김두영,양정선,박재우 제주대학교 산업기술연구소 2000 尖端技術硏究所論文集 Vol.11 No.1

An experimental investigation has been performed to determine optimal conditions for preparing the thermoluminescent CaSO4:Dy pellets which have been widely used as personal radiation dosimeter material. Our investigation has shown that an optimal weight concentration of the dopant Dy in the bulk CaSO4:Dy is 0.1 mol%, and an optimal temperature of adding Dy in the preparing process is 320 ℃. An optimal time and temperature for sintering the CaSO4:Dy crystal produced from the chemical process are found to be 2 hours and 800 ℃, respectively. The maximum thermoluminescent sensitivity was observed when the CaSO4:Dy crystal was pulverized to grain sizes of 63 - 200 ㎛ in diameter before being fabricated into pellets. The commercial Teflon was selected as an adhesive for the fabrication of the CaSO4:Dy pellets with an optimal mixing ratio of the Teflon and CaSO4:Dy being 70 to 30 in weight.

Agricultural Materials as Natural Bioactivators Stimulating Beneficial Indigenous Microbial Activity in soil

Jang-Sun Suh(서장선),Jang-Sik Kwon(권장식),Kap-Yul Jang(장갑열),Hyung-Jun Noh(노형준) 한국토양비료학회 2008 한국토양비료학회 학술발표회 초록집 Vol.2008 No.9

Frequency of Nasal Septal Perforation at the Suture Fixation Site of a Silastic Sheet Inserted during Nasal Surgery

Jang Yul Byun,Young Joo Park,Jae Yong Lee 순천향대학교 순천향의학연구소 2011 Journal of Soonchunhyang Medical Science Vol.17 No.2

Objective: This study was performed to evaluate the frequency of nasal septal perforation at the suture fixation site of a silastic sheet inserted during nasal surgery. Methods: Seven hundred and twenty-one patients with silastic sheet insertion during common nasal surgeries were examined. The frequency of perforations and subjective symptoms of the patients were evaluated. Results: Nasal septal perforation at the suture fixation site occurred in seven patients (0.97%). In three patients, perforations occurred immediately after removal of the sheet, while four patients developed perforations 2 to 4 weeks later. In most cases, perforations were small and did not exceed 2 to 3 mm in diameter. No patient complained of nasal symptoms related to the septal perforation postoperatively. Conclusion: The frequency of the septal perforation at the suture fixation site of a silastic sheet was very low and subjective symptoms were absent.

Biochemical and Genetic Characterization of Arazyme, an Extracellular Metalloprotease Produced from Serratia proteamaculans HY-3

( Jang Yul Kwak ),( Ki Eun Lee ),( Dong Ha Shin ),( Jin Soo Maeng ),( Doo Sang Park ),( Hyun Woo Oh ),( Kwang Hee Son ),( Kyung Sook Bae ),( Ho Yong Park ) 한국미생물생명공학회 2007 Journal of microbiology and biotechnology Vol.17 No.5