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전기방사를 이용한 titanium oxide/polyvinyl alcohol 습도센서 제조 및 성능에 관한 연구
정유경,최세진,김한성,Jeong, Yu Kyung,Choi, Sejin,Kim, Han Seong 한국섬유공학회 2017 한국섬유공학회지 Vol.54 No.1
In this study, titanium oxide($TiO_2$)/polyvinyl alcohol(PVA) electrospun composite nanofibers were used as a humidity sensing layer. The electrospinning behavior was observed to investigate the influence of different concentrations of $TiO_2$. In order to secure the structural stability of the sensing layer, which was dissolved under conditions of high humidity, the PVA-based sensing layer was crystallized at $180^{\circ}C$. The humidity sensing properties, including the impedance versus relative humidity and response-recovery time, were found to improve because of the structural advantage of the fiber-shaped sensing layer and the hydrophillic inorganic particles. Furthermore, The humidity sensing mechanism could be elucidated via the complex impedance plots and corresponding equivalent circuit.
Ki-1 양성 역형성 대세포 림프종의 체액 세포학적 소견 - 1예 보고 -
이미숙,이미자,정유경,임성철,기근홍,전호종,Lee, Mi-Sook,Lee, Mi-Ja,Jeong, Yu-Kyung,Lim, Sung-Chul,Kee, Keun-Hong,Jeon, Ho-Jong 대한세포병리학회 1995 대한세포병리학회지 Vol.6 No.2
Ki-1 positive anaplastic large cell lymphoma is a newly described high-grade lymphoma and is defined by histopathological and immunologic criteria. We experienced a case of systemically involving Ki-1 positive anaplastic large cell lymphoma in a 44 year-old female which initially manifested as pleural effusion. Abdominopelvic CT scan showed the evidence of marked lymphadenopathy in retroperitoneal and both external and inguinal lymph nodes. On cytologic examination of pleural fluid, tumor cells revealed pleomorphic large isolated cells with prominent nucleoli and abundant cytoplasms. The nuclei were large with irregular profiles including some deep invaginations. Also, occasional multilobed/multinucleated and binucleated nuclei were seen. Immunohistochemical examination was performed to differentiate from the undifferentiated adenocarcinoma, Hodgkin's disease, non-Hodgkin's lymphoma and malignant histiocytosis. The neoplastic cells were positive for leukocyte common antigen, CD3, CD30(Ki-1) but negative for cytokeratin, epithelial membrane antigen, and CD15. A histologic diagnosis of Ki-1 positive anaplastic lymphoma was made by biopsies of the inguinal lymph node, polypoid lesions of the stomach and cecum.
Pop-up Satellite Archival Tag (PSAT) 체외 부착방법에 따른 방어(Seriola quinqueradiata)의 혈액성상 및 PSAT 부착효율
오승용 ( Sung-yong Oh ),정유경 ( Yu-kyung Jeong ) 한국수산과학회(구 한국수산학회) 2021 한국수산과학회지 Vol.54 No.1
This study aimed to determine the effect of the pop-up satellite archival tag (PSAT) tagging method on the blood indices and PSAT attachment efficiency of yellowtail Seriola quinqueradiata (mean body weight 10.2 kg). Based on tagging method, the fishes were divided in four different groups: untagged (control), single anchor (SA), dual anchor (DA), and silicon tube (ST). The blood indices and PSAT attachment efficiency were investigated on days 1, 14, and 28 after tagging PSAT on the muscle below the dorsal fin for each tagging method in triplicates. After 28 days of tagging with PSAT, a significant increase was observed in plasma glucose level in the ST group and in total protein level in the DA and ST groups. The levels of glucose, total protein, and total cholesterol in the SA group after 28 days of tagging were significantly lower than in the control group. The efficiencies of PSAT attachment were 0% in the SA and DA groups on 14 days post-tagging, and 66.7% in the ST group on 28 days post-tagging. The study results indicate that the proper PSAT tagging method is the ST type. The information obtained in this study presents valuable data that provide the required PSAT operational tool for industrial development and ecological monitoring of yellowtail.
전호종,이미자,이미숙,정유경,이영미,최형호,Jeon, Ho-Jong,Lee, Mi-Ja,Lee, Mi-Sook,Jeong, Yu-Kyung,Lee, Young-Mi,Choi, Hyung-Ho 대한세포병리학회 1995 대한세포병리학회지 Vol.6 No.2
Reactive humsn mesothelial cells were examined by immunocytochemical stain with intermediate filaments (cytokeratin [CK1, CK7, CK8, CK18, CD19), vimentin, desmin, actin), epithelial membrane antigen, carcinoembryonic antigen (CEA), MHC class II antigen (HLA-DR), LeuM-1 (CD15), $\alpha1-antitrypsin$(ACT), $\alpha1-antichymotrypsin$ (ACHT), CD68(KP-1) and FcyRIII(CD16). The mesothelial cells were isolated from patients with liver cirrhosis and pleural effusion, and short-term cultured in RPMI 1640 media containing 10% heat inactivated fetal calf serum and 1% identical supernatant fluid of the patients' transudates. The results obtained are as follows 1. The cultured-reactive mesothelial cells were positive for the protein of cytoskeleton such as cytokeratin and vimentin, but negative for desmin and actin. The resting mesothelial cells showed positive reactions for cylokeratin, but negative for vimentin, desmin and actin. 2. The primary antibodies to the cytokeratin were strongly reactive for CK1, CK8 and CK18 but negative for CK7 and CK19 in both reactive and resting mesothelial cells. 3. Resting mesothelial cells showed negative reactions for CEA, but strong positive reactions in cultured-reactive mesothelial cells. 4. The markers for the monocytes/histiocytes(CD11b, CD14, CD16, CD68, Iysozyme and $\alpha1-antitrypsin$ and $\alpha1-antichymotrypsin$) were nonreactive in resting mesothelial cells, but lysozyme and $\alpha1-antitrypsin$ were weakly reactive in reactive and proliferative mesothelial cells. 5. MHC Class II molecule(HLA-DR antigen) was negative in both resting and reactive mesothelial cells. These results suggest that the short-term cultured, reactive mesothelial cells show a newly aberrant expression of the vimentin and calcine-embryonic antigen. The reason of the aberrant expression of the intermediate filament and oncofetal antigen in reactive and proliferative mesothelial cells should be further evaluated.