• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 추계학술대회 논문집 전력기술부문
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• pp.106-108
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• 2001

As 3V cathode material, a new doping spinel material, LiMn1.6Se0.4O4 powder with a phase-pure polycrystalline was synthesized by a sol-gel method. In spite of Jahn-teller distortion in 3V region($2.4{\sim}3.5V$), the LiMn1.6Se0.4O4 electrode shows no capacity loss. The material in the 3V region initially delivers a discharge capacity of 100mAh/g which increase with cycling to reach 105mAh/g after 90cycles. And 5V cathode material LiNi0.5-xMxMn1.5O4(M=Cr, V, Fe) compounds have been synthesized by sol-gel method. a series of electroactive spinel compounds, LiNi0.5-xMxMn1.5O4(M=Cr, V, Fe) has been studied by crystallographic and electrochemical methods. The material presents only one plateau at around 4.5 V vs. Li/Li+ with a large discharge capacity of 152mAh/g and fairly good cyclability.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제27권2호
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• pp.110-122
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• 2005

Adenoid cystic carcinoma (ACC) of salivary glands has a protracted clinical course with perineural invasion, delayed onset of hematogenous metastasis, and poor responses to classical cytotoxic chemotherapic agents. Most deaths from salivary ACC are caused by lung metastases that are resistant to conventional therapy. Therefore, knowledge of cellular properties and tumor-host interactions that influence the dissemination of metastatic cells is important for the design of more effective therapy of salivary cancer. I determined in vitro expression of epidermal growth factor receptor (EGFR) and its downstream effectors and vascular endothelial growth factor receptor (VEGFR)-2 on a human salivary ACC cell line (ACC2). I also evaluated the expression of EGF and VEGF signaling molecules and metastasis-related proteins on human salivary ACC cells orthotopically growing in nude mice. In Western blot and immunohistochemical analyses, EGFR and VEGFR-2 were presented and phosphorylated in ACC2 cells. In human parotid cancer xenografts in nude mice, EGF and VEGF signaling molecules, IL-8, and MMP-9 were expressed at markedly higher levels than in normal parotid tissues. Moreover, tumor-associated endothelial cells of this orthotopic parotid tumor expressed phosphorylated VEGFR-2 and phosphorylated Akt, which is a cell-survival protein. These data show that those biomarkers can be molecular targets for therapy of salivary ACC, which has a propensity for delayed lung metastasis.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제29권5호
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• pp.451-455
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• 2007

The glandular odontogenic cyst is an uncommon odontogenic cyst as a distinct entity. We reviewed a series of 7 glandular odontogenic cysts of the jaws experienced between 2003 and 2006 at the department of Oral and Maxillofacial surgery, Chosun university. The study group consisted of 3 females (42.9%) and 4 males (57.1%), with an age range of 31 to 75 years and mean age was 58.6 years. The maxilla was involved in 5 cases (71.4%) and the mandible in 2 cases (28.6%). Three cases involved impacted tooth. Clinically 6 cases showed swelling and tenderness. All the lesion presented well-defined unilocular radiolucent lesion radiographically. Provisional clinical diagnosis was varied, incisional biopsy was done in 1 case. Histopathologically, those were lined by non-keratinized stratified epithelium and thickened epithelial segments (plaques) are seen within the lining epithelium. And epithelial lining contains eosinophilic cuboidal type cells, mucous cells and mucin pools in microcystic areas are identified. All cysts were treated by enucleation. All cases are not recurred during follow up period.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제36권3호
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• pp.211-213
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• 2010

Glandular odontogenic cyst (GOC) is an intraoral cyst originated from serre remnants which has incidence of rare frequency. Only 111 cases have been reported since Gardener first introduced it in 1987. The clinical features are the following components: cortical bone thinning, locally aggressive root resorption, non-painful swelling. The following recurrences rate are 64.3% in conservative treatment, and 0% in wide excision for instance, segmental or marginal mandibulectomy. So, its prognosis is similar to that of odontogenic keratocyst and ameloblastoma. Therefore, periodic recall follow ups are essential to detect disease recurrence. Here, we will report the first case of GOC diagnosed in our department considering with references. And we share this treatment experience because these aggessive lesions may be misjudged for simple dental cyst.

• 한국전기전자재료학회논문지
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• 제21권5호
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• pp.447-452
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• 2008

We synthesized nano-sized $La_{1-x}Sr_xCoO_3$ ($x=0.1{\sim}0.4$) cathode catalyst for the zinc air secondary batteries by citrate method, And we measured the cathode's electrochemical characteristics according to content of strontium compose the cathode catalyst. We controlled the pH of precursor solution by 10 in the process of manufacturing the precursor, We heat treated the prepared precursor at various calcination temperature ($500{\sim}900^{\circ}C$), and examined the optimum calcinations temperature by XRD analysis and electrochemical evaluation. We examined the ORR (oxygen reduction reaction) and OER (oxygen evolution reaction) performance of the prepared $La_{1-x}Sr_xCoO_3$ catalyst powder. When we consider ORR and OER performance simultaneously, $La_{0.7}Sr_{0.3}CoO_3$ catalyst has shown the best performance because of its lowest voltage deference between charge and discharge.

• Journal of Chest Surgery
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• 제27권5호
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• pp.413-417
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• 1994

Adenoid cystic carcinoma usually grows in the trachea or near its bifurcation and causes obstruction of the air way. We recently experienced a 33 year-old male patient who had adenoid cystic carcinoma in the left main bronchus with the chief complaint of productive cough. On the bronchoscopy, the mass obstructed the left main bronchus completely and had nodularity and increased vascularity.The trachea was shifted to the left side and the lower lobe of the left lung was atelectatic on chest X-ray and computed axial tomogram.He underwent left tracheal sleeve pneumonectomy and lymph node dissection through bilateral thoracotomy. At first,we attempted left tracheal sleeve pneumonectomy through the left thoracotomy,however, it was very difficult to perform carinoplastic procedure after sleeve resection of 2.5cm of distal trachea and 1cm of proximal right main bronchus including whole left lung because of poor operative field and difficulty in the anastomosis of the right main bronchus to the distal end of the trachea without tension.Therefore after radical resection of the left lung we made right thoracotomy,through which we could anastomosed the distal trachea and right main bronchus with 4-0 PDS interrupted suture after mobilization of the right hilum without difficulty. The tumor was confirmed to be adenoid cystic carcinoma with metastasis to subcarinal lymph node histopathologically. Postoperative course was uneventful but he needed two bronchoscopic procedure to clear distal airway of the retained bronchial secretion. He was discharged at 14 days after operation with complete recovery.

• 한국소음진동공학회논문집
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• 제21권7호
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• pp.657-664
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• 2011

This paper shows a whole noise quality checking system for the new developed 6th speed automatic transmission manufactured in USA. Due to demand for manufacturing of the high NVH quality transmissions in the mass product line, some special checking system called EOL NVH is adapted. This EOL system is using vibration sensor and analysis technologies. Through adapting vibration analysis technologies and functions likewise RMS, crest factor, harmonics, peak, band and order tracking, various noise problems caused by wear, nick and deformations could be successfully detected and predicted. Therefore, automatic transmissions manufactured in the USA could get high NVH quality. The developing process described in this paper and results on EOL system will offer good guides to the engineers who built the next transmission factory.

• 디지털융복합연구
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• 제12권4호
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• pp.461-466
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• 2014

일본시리즈게임<삼국지>가 부각되면서 아시아게임시장에서는 삼국지의 유행이 불기 시작하였고 삼국지의 전통문화자원이 게임문화산업의 유형으로 탄생되었다. 이와 더불어 전통문화를 선양함과 동시에 경제적 효과의 이중효과를 나타냈다. 유비(刘备), 관우(关羽) 등 캐릭터가 여러 문화산업분야에서 개발됨에 따라 특정된 역사인물의 국제화외형디자인이 디지털아트분야로 주목받게 되었다. 본 논문은 삼국문화와 삼국무장에 대해 분석하고 고전소설 삼국지:(중국<삼국연의三国演义>)등에 의거하여 한국과 중국에서 개발된 삼국지 게임에서 관우(关羽)를 중심으로 무장캐릭터 실제 예를 들어 관우(关羽)의 조형, 복장, 무기, 색채 등을 비교분석하여 역사인물 게임캐릭터의 국제화추세를 탐구하려고 한다.

• 대한세포병리학회지
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• 제11권2호
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• pp.89-92
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• 2000

Adenoid cystic carcinoma constitutes 4 percent of ail benign and malignant epithelial salivary gland tumors and is a highly malignant tumor of the salivary glands. The cytologic presentation in aspirates is usually characteristic with spherical clusters(balls) of small tumor cells filled with hyaline material. But in case of the poorly differentiated variety(solid type), it is difficult to differentiate from other tumors because sheets of small, fairly monotonous malignant cells, with somewhat larger and more conspicuous nuclei are only seen. The cytologic findings of fine needle aspiration of solid type adenoid cystic carcinoma of buccal mucosa in a 51-year-old man are presented. On cytologic findings, solid sheets of monotonous tumor cells with focal necrosis was noted on a hemorrhagic background and the characteristic cytologic features of adenoid cystic carcinoma was absent.

• 문화기술의 융합
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• 제4권3호
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• pp.27-32
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• 2018

본 연구는 조선 후기 몰락한 양반가의 서민 여성작가를 대표하는 구체적인 예로써 김삼의당(金三宜堂)(1769~1823)과 강정일당(姜靜一堂)(1772~1832) 등 2인을 설정하여 이들의 시문(詩文)에 담긴 현실인식과 지향의식이라는 공통적 감성을 탐구하였다. 삼의당(三宜堂)은 가문의 부흥을 위해 남편의 과거 등과 뒷바라지에 헌신하면서 남편과 활발한 시문 교류를 통한 부덕(婦德)을 실현하였으며, 조선 시대 여류작가로는 가장 많은 작품을 남겼다. 정일당(靜一堂)은 조선 후기의 여성 성리학자(性理學者)이자 시인이다. 그녀 역시 평생을 삯바느질과 병마에 시달리면서도 기울어가는 가문을 일으키기 위해 남편의 훈육자(訓育者)로서의 자기 인식을 확고히 하고 학문을 독려하며 적극 지원하였다. 이들은 권면적(勸勉的) 지우(知友)로서의 부부평등 의식을 갖고 입신양명(立身揚名)을 통한 가문 선양을 지향하였다. 또한 전원적(田園的) 안빈낙도(安貧樂道)를 추구한 주체적 여성들이었다.