http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 정경영 ( Kyoung Young Jung ) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
전기방사법을 이용한 Heparin-VEGF 함유 소구경 Elastin/PLGA/PCL 혈관지지체의 제조 및 In Vivo 평가
최정연 ( Jeong Yeon Choi ),정경영 ( Kyoung Young Jung ),이지선 ( Ji Seon Lee ),조석기 ( Suk Ki Cho ),전상훈 ( Sang Hoon Jheon ),임정옥 ( Jeong Ok Lim ) 한국조직공학과 재생의학회 2010 조직공학과 재생의학 Vol.7 No.2
Vascular scaffolds made of synthetic materials have been successfully used for many years for the revascularization of blood vessels with inner diameters ≥6 mm. However, small diameter vascular substitutes (<5 mm) have shown poor patency rates because of the occurrence of thrombosis. In this study, we investigated small diameter (~3 mm) vascular grafts composed of elastin, poly (lactic-co-glycolic acid : PLGA) and polycaprolactone (PCL) fabricated by electrospinning techniques. In addition, heparin and vascular endothelial growth factor (VEGF) were added to the scaffolds to prevent thrombosis on the target incision and promote endothelial cell growth on the surface of scaffolds. The arterial grafts of electrospun elastin/PLGA/PCL vascular prostheses in Sprague-Dawley rats were found to improve the recovery of the incised blood vessel function by promoting migration, attachment and proliferation of endothelial cells onto the vascular scaffolds, thus exploring the potential of electrospun polymer scaffold in vascular graft engineering.
-
전석준 ( Seok Jun Jeon ),현경학 ( Kyoung Hak Hyun ),정경영 ( Gyoung Young Jung ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.6
The purpose of this study was to develop an alternative coagulant supply device to replace a conventional chemical dosing system used in the chemical precipitation process for phosphorus removal, Bench-scale multi-stage anaerobic fixed bed reactors were packed with iron nuts and domestic wastewater was fed continuously to enhance microbially induced corrosion under anaerobic condition. Total iron concentrations in the effluent varied between 7.8mg/L- 13.0mg/L over the 90days of testing period ensuring sustained corrosion of iron in the reactors. The corrosion of iron in the anaerobic reactor was greatly influenced by sulfate reducing bacteria(SRB) as sulfate concentration was inversely proportional to total iron concentration from the first to the last reactor effluents, Besides the merits of iron as coagulants supply, favourable characteristics such as alkalinity production and minimal organic loss for sustained biological denitrification were identified, In case of introducing the anaerobic fixed bed reactor prior to secondary treatment system, it is required to operate the anaerobic reactor at the HRT of 67.5 minute or above in order to remove phosphorus from domestic wastewater.
-
원발성폐암 환자에서 말초혈액과 국소림프절 단핵구의 NK 및 LAK 활성도에 관한 연구
이이형(Yi Hyeong Lee),김세규(Se Kyu Kim),김형일(Hyung Il Kim),정경영(Kyoung Young Chung),장준(Joon Chang),김성규(Sung Kyu Kim),이원영(Won Young Lee),한명호(Myung Ho Hahn),윤정구(Jung Ku Youn) 대한내과학회 1998 대한내과학회지 Vol.54 No.3
N/A Background: Several lymphocytic populations, such as natural killer(NK) cells and lymphokine-activated killer(LAK) cells, are involved in immunosurveillance against tumors. Whereas the biological significance of the regional lymph node as a tumor barrier remains unclear, the clinical prognostic relevance of the neoplastic infiltration of these nodes is accepted. It appears that lymph node metastasis are more frequent in lung cancer than in other cancers because of impaired defensive mechanisms in the regional lymph nodes. However little is known about the immunologic function of regional lymph node lymphocytes in patients with lung cancer. Although there is general agreement that the NK and LAK activities of peripheral blood mononuclear cells(PBMC) decreases in patients with various solid and leukemic tumors, this decrease remains unclear with regard to the NK and LAK activities of their regional lymph node mononuclear cells(LNMC). We performed this study to determine the NK and LAK activities of regional lymph node, and to compare with those of peripheral blood in patients with lung cancer. Methods: We measured the NK and LAK activities of PBMC and LNMC that were extirpated at lung cancer operations in 17 patients with lung cancer by 4 hour 51Cr-release assay using K562, Raji cell and allogenous lung cancer cell line(NCIH1092) as a target cell. BT ratio were 12.5:1, 25:1, and 50:l. Results: 1. Recombinant interleukin-2 induced strong cytotoxic activities against various target cells in PBMC and LNMC. 2. In patients with lung cancer, NK and LAK activities against K562 and allogenous lung cancer cell line(NCIH 1092) were lower than those of PBMC. 3. Against Raji cell, NK activities were not significantly different between PBMC and LNMC, but LAK activities were significantly lower than those of PRMC. 4. NK activities against K562, Raji, and NCIH1092 cell were not significantly different between in patients with early stage and advanced stage lung cancer. 5. LAK activities of PBMC and LNMC against K562, Raji, and NCIH1(62 cell were significantly lower in patients with advanced stage than those in patients with early stage lung cancer. Conclusion: NK and LAK activities of LNMC in patients with lung cancer were lower than those of PBMC, but the cytotoxicity was markedly increased after culture with rIL-2.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
