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LPCD법에 의한 Tin박막의 전계 에미터 어레이 제작
조경제,이상윤,류정탁,김연보,이진호 大邱大學校 科學技術硏究所 2001 科學技術硏究 Vol.8 No.2
Using low pressure chemical vapor deposition (LPCVD), TiN thin films as field emitter array were fabricated. In this Work, a method was transfered to a substrate and the wet-etching of the silicon substrate instead of fabricated method of mold shape was using in generally but we have fabricated gated field emitter tips as using mold shape of the new method that using a side wall space structure. Following sequences such as LPCVD method of a gate electrod and gate oxide on a silicon substrate and defesited BPSG thin film as a high temperature was flowed by the mold shape of a sharpen, the TiN as a materials of emitter tips was deposited after was bounded by anodic bonding and the wet-etching of the silicon substrate by using KOII solution, the last have fabricated a gated field emitter arrays of a sharpen. These emitters were estmated by scanning electron microscopy and X-ray diffraction.
Ryu, Jung-Hwa,Park, Minhwa,Kim, Bo-Kyung,Kim, Yu-Hee,Woo, So-Youn,Ryu, Kyung-Ha D.A. Spandidos 2016 MOLECULAR MEDICINE REPORTS Vol. No.
<P>Mesenchymal stromal cells (MSCs) have therapeutic potential for repairing tissue damage and are involved in immune regulation. MSCs are predominantly isolated from bone marrow (BM), adipose tissue or placental tissue. Further to these well-known sources, the isolation of MSCs from human tonsils was previously reported. The aim of the present study was to investigate a potential role for tonsil-derived MSCs (T-MSCs) in BM reconstitution and application towards supplementing hematopoiesis in a mouse model of BM transplantation (BMT). Eight-week-old BALB/c female mice received 80 mg/kg busulfan (Bu)/200 mg/kg cyclophosphamide (Cy) conditioning chemotherapy for BM ablation. Subsequently, human T-MSCs were injected into the Bu/Cy-treated mice with or without BM cells (BMCs) obtained from allogeneic C57BL/6 male mice. After 3 weeks, peripheral blood and BM was collected for analysis. The red blood cell count in the group that received BMCs had almost returned to normal, whereas mononuclear cell counts and BM cellularity were most improved in the T-MSCs + BMCs group. These results indicate that the T-MSCs enhanced myelopoiesis in the allogeneic BMT mouse model, as evidenced by the restoration of BM with hematopoietic cells, as well as increased myeloid colony formation <I>in vitro</I>. Therefore, T-MSCs may provide a source of MSCs to facilitate myelopoiesis and megakaryocytosis following BMT.</P>
류경수(Kyung-Soo Ryu),박경환(Kyung-whan Park),송보원(Bo-wan Song) 한국생약학회 1981 생약학회지 Vol.12 No.1
The root-bark of the mulberry tree has been used as a medicine with antitussive, antiphlogistic, diuretic etc. in Korea. Among many kinds of mulberry trees, Morus Lhou has been widlly cultivated in our country. In this experiment, thee substances were obtained from the root-bark of Morus Lhou removed its cork layer by column chromatography of methanol extract. One of the substances was supposed as α-amyrin acetate, another was alyceride, the other was confirmed as β-sistosterol by chemical and physical methods.
Ryu, Jinhyun,Ku, Bo Mi,Lee, Yeon Kyung,Jeong, Joo Yeon,Kang, Seokmin,Choi, Jungil,Yang, Yeongae,Lee, Dong Hoon,Roh, Gu Seob,Kim, Hyun Joon,Cho, Gyeong Jae,Choi, Wan Sung,Kim, Nayoung,Kang, Sang Soo Potamitis Press 2011 Anticancer research Vol.31 No.12
<P>High invasiveness of glioma cells is one of the reasons that patients with malignant glioma have a poor prognosis. Resveratrol, a plant compound abundant in the peel of grapes, has been suggested as a potential cancer chemopreventive agent. Therefore, we investigated the effect of resveratrol on glioma cell invasion.</P>
유승곤,고경렬,채주승,정종헌,이보성 한국화학공학회 1993 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.31 No.1
석유 핏치로부터 hollow 탄소섬유를 만들고 이를 스팀으로 활성화하여 비표면적이 800-2100 ㎡/g인 새로운 타입의 흡착제, 중공활성탄소섬유(HACF)를 제조하였다. 이들의 등온흡착곡선은 모두 Type I을 보였다. 약 70%의 burn-off에서도 외부표면적은 전체표면적의 약 1.5% 미만이었고, 이것은 내부 세공부피가 대단히 큼을 보여주고 있다. HACF는 ACF와 마찬가지로 요오드 흡착이나 메틸렌블루 탈색 등 액상흡착에서 뛰어난 흡착능력을 보여 주었다. 특히 hollow ACF는 분자체와 마찬가지로 혼합물의 분리 등에 효과적으로 사용될 수 있을 것으로 전망된다. Hollow carbon fiber was prepared from petroleum pitch and activated by steam for the production of new type adsorbent. The hollow activated carbon fibers (HACF) showed 800-2100 ㎡/g of specific surface area. All the adsorption isotherms of HACFs were Type I. The external surface area of 70% burn-off HACF was only about 1.5% of total surface area, which means that the micropore volume is very large. HACFs have excellent iodine adsorption and methylene blue decolorization capacities like an ordinary activated carbon fibers in solution. Especially, it is expected that HACF can be used for the separation of various mixtures as molecular sieves.
Bo Kyung Kim,Jung Won Chun,Sang Hyub Lee,Ji Kon Ryu,Yong-Tae Kim,Woo Hyun Paik 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.4
A lumen-apposing metal stent (LAMS) is a saddle-shaped stent with large flanges at both ends, thereby preventing stent migration andhelping with approximation of the adjacent structures. We report the case of a 25-year-old female with remnant choledochal cyst whichwas successfully treated with LAMS after initial treatment failure with a plastic stent. Although complete excision of the cyst is the definitetreatment of choledochal cysts, endoscopic ultrasonography-guided cystoduodenostomy can be considered in cases wherein surgeryis not feasible and dysplasia is not present. LAMS may be preferred to plastic stents for effective resolution of remnant choledochalcyst and prevention of ascending infection.