• Proceedings of the KIEE Conference
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• 2001.11b
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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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• v.27 no.2
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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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• v.29 no.5
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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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• v.36 no.3
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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.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.21 no.5
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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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• v.27 no.5
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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.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.21 no.7
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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.

• Journal of Digital Convergence
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• v.12 no.4
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• pp.461-466
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• 2014

With the popularity of Japan's "Three Kingdoms" series of games, the Three Kingdoms became popular and gave birth to the Three Kingdoms game for the traditional cultural resources and cultural industries. At the same time generate economic benefits and promote the traditional culture of double effect. With Liu Bei, Guan Yu and other roles in the development of cultural industries in each particular historical figure internationalization appearance design to get attention in the digital arts industry. In this thesis, three kingdoms cultures and three kingdoms generals were analyzed based on classic novel Three Kingdoms (三国演义). Guan Yu, China and South Korea in appearing common in the game as the center. Take example of the role of Guan Yu's generals styling, clothing, weapons, color comparison, attempts to explore the international trend of historical figures game character.

• The Korean Journal of Cytopathology
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• v.11 no.2
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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.

• The Journal of the Convergence on Culture Technology
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• v.4 no.3
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• pp.27-32
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• 2018

The study chose two people, KimSamuidang(1769~1823) and GangJeongildang(1772~1832), as concrete examples representing the common female writers in the late of the Joseon Dynasty. And study the recognition on reality and consciousness of orientation in the poetic literature. KimSamuidang is commit to the revival of his family to pass the test. And exchange with husband through active study literature and practice wife law. She left the largest number of works as a female writer during the Joseon Dynasty. GangJeongildang is a Confucian scholar and poet of the late Joseon Dynasty. She also spent her whole life sewing and suffering from disease, trying to create a dying family. Teaching her husband's education, she established self-recognition, encouraged and supported learning. They had a equality sense of marriage couple as academic friends, encouraging each other to study, and by passing the test, they tried to raise their families. Also, although poor in rural life, the mind was the Independent women who pursued comfortable life.