• Title/Summary/Keyword: chungnam

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Malignant Mesothelioma Diagnosed by Bronchoscopic Biopsy

  • Park, Yeon-Hee;Choi, Jae-Woo;Jung, Sang-Ok;Cho, Min-Ji;Kang, Da-Hyun;Chung, Chae-Uk;Park, Dong-Il;Moon, Jae-Young;Park, Hee-Sun;Jung, Sung-Soo;Kim, Ju-Ock;Kim, Sun-Young;Lee, Jeong-Eun
    • Tuberculosis and Respiratory Diseases
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    • v.78 no.3
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    • pp.297-301
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    • 2015
  • Malignant mesothelioma is a rare malignant neoplasm that arises from mesothelial surfaces of the pleural cavity, peritoneal cavity, tunica vaginalis, or pericardium. Typically, pleural fluid cytology or closed pleural biopsy, surgical intervention (video thoracoscopic biopsy or open thoracotomy) is conducted to obtain pleural tissue specimens. However, endobronchial lesions are rarely seen and cases diagnosed from bronchoscopic biopsy are also rarely reported. We reported the case of a 77-year-old male who was diagnosed as malignant mesothelioma on bronchoscopic biopsy from obstructing masses of the endobronchial lesion.

Does the direction of J-tip of the guide-wire influence the misplacement of subclavian catheterization?

  • Kang, Changshin;Cho, Sunguk;Ahn, Hongjoon;Min, Jinhong;Jeong, Wonjoon;Ryu, Seung;Oh, Segwang;Kim, Seunghwan;You, Yeonho;Park, Jungsoo;Lee, Jinwoong;Yoo, Insool;Cho, Yongchul
    • Journal of The Korean Society of Emergency Medicine
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    • v.29 no.6
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    • pp.636-640
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    • 2018
  • Objective: Central venous catheter (CVC) misplacement can result in incorrect readings of the central venous pressure, vascular erosion, and intravascular thrombosis. Several studies have examined the correlation between the guidewire J-tip direction and misplacement rate. This study examined whether the guidewire J-tip direction (cephalad vs. caudad) affects the misplacement rate in right subclavian venous catheterization. Methods: This prospective randomized controlled study was conducted between February 2016 and February 2017. The subjects were divided into two groups (cephalad group vs. caudad group) and the misplacement rate was compared according to guidewire J-tip direction in each group. Results: Of 100 patients, the cephalad and caudad groups contained 50 patients each. The age, sex, and operator experience were similar in the two groups. In the cephalad group, misplacement of CVC insertion into the ipsilateral internal jugular vein occurred in two cases. In the caudad group, misplacement of CVC insertion into the contralateral subclavian vein occurred in one case, with loop formation in the brachiocephalic trunk in one case. Guidewire J-tip direction showed no significant correlation with CVC misplacement. Conclusion: The guidewire J-tip direction does not influence the rate of misplacement.

A Case of Feline Lymphocytic-Plasmacytic Enteritis (고양이 림프구-형질세포성 장염 1례)

  • Lee, Charn-Jin;Jun, Hyung-Kyou;Choi, Ho-Jung;Jeong, Seong-Mok;Lee, Young-Won;Park, Seong-Jun;Cho, Jong-Ki;Cho, Sung-Whan;Song, Kun-Ho
    • Journal of Veterinary Clinics
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    • v.25 no.4
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    • pp.286-288
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    • 2008
  • A 8-year-old intact female Siamese cat with chronic vomiting was referred to the Veterinary Teaching Hospital of Chungnam National University. The cat was diagnosed as lymphocytic-plasmacytic enteritis by complete blood count, blood chemistry, radiography, ultrasonography and histopathologic examination following small intestine biopsy. The cat show good prognosis to date after continuous hypoallergenic diet providing and low-dose prednisolone therapy.

Decrease of Parasitic Capacitance for Improvement of RF Performance of Multi-finger MOSFETs in 90-nm CMOS Technology

  • Jang, Seong-Yong;Kwon, Sung-Kyu;Shin, Jong-Kwan;Yu, Jae-Nam;Oh, Sun-Ho;Jeong, Jin-Woong;Song, Hyeong-Sub;Kim, Choul-Young;Lee, Ga-Won;Lee, Hi-Deok
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.15 no.2
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    • pp.312-317
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    • 2015
  • In this paper, the RF characteristics of multi-finger MOSFETs were improved by decreasing the parasitic capacitance in spite of increased gate resistance in a 90-nm CMOS technology. Two types of device structures were designed to compare the parasitic capacitance in the gate-to-source ($C_{gs}$) and gate-to-drain ($C_{gd}$) configurations. The radio frequency (RF) performance of multi-finger MOSFETs, such as cut-off frequency ($f_T$) and maximum-oscillation frequency ($f_{max}$) improved by approximately 10% by reducing the parasitic capacitance about 8.2% while maintaining the DC performance.