• The Journal of Korean Medicine
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• v.39 no.1
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• pp.55-62
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• 2018

Objectives: This study aims to investigate on the nomenclature of acupoints for the Healthcare Terminology Standard. Methods: We investigated the name of acupoints in "Standard Acupuncture Nomenclature (Second Edition)" of WHO, "WHO Standard Acupuncture Point Locations in The Western Pacific Region", "Principles of Meridians & Acupoints", "Details of Meridians & Acupoints" and "Acupuncture Medicine". Results: In books, we found that the name of acupoints was used differently in LI19, TE22, HT3, SI8, ST16, SI16, GB16 and BL8 acupoints. Conclusions: 口禾髎(LI19), 耳和髎(TE22), 少海(HT3), 小海(SI8), 膺窗(ST16), 天窗(SI16), 目窗(GB16), 絡卻(BL8) and 淵腋(GB22) in confused acupoints have been established as the terms of acupoints for the Healthcare Terminology Standard.

• 한국신재생에너지학회:학술대회논문집
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• 2010.06a
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• pp.96.2-96.2
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• 2010

The surface morphology and structural properties of polycrystalline silicon (poly-Si) films made in-situ aluminum induced crystallization at various substrate temperature (300~600) was investigated. Silicon films were deposited by hot-wire chemical vapor deposition (HWCVD), as the catalytic or pyrolytic decomposition of precursor gases SiH4 occurs only on the surface of the heated wire. Aluminum films were deposited by DC magnetron sputtering at room temperature. continuous poly-Si films were achieved at low temperature. from cross-section TEM analyses, It was confirmed that poly-Si above $450^{\circ}C$ was successfully grown on and poly-Si films had (111) preferred orientation. As substrate temperature increases, Si(111)/Si(220) ratio was decreased. The electrical properties of poly-Si film were investigated by Hall effect measurement. Poly-Si film was p-type by Al and resistivity and hall effect mobility was affected by substrate temperature.

• Journal of Korea Foundry Society
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• v.15 no.4
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• pp.360-367
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• 1995

Effects of metal coating treatment on SiC particle on wetting behavior and interfacial strength were studied. Experimental variables are included types of coated metallic films such as Cu and Ni-P, and temperatures of heat-treatment under vacuum. The experimental results concerning wetting phenomena of liquid Al on SiC, showed that coating treatment of metallic film on SiC particles remarkably improves the wetting behavior of liquid Al on SiC, especially in the case of Ni-P coating. The interfacial strength of Al/SiC composites made of coated SiC plate was higher than that of the composite with non-coated SiC plate although the coating treatment was not perfect.

• Proceedings of the Korean Society For Composite Materials Conference
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• 2005.04a
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• pp.102-105
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• 2005

The mechanical properties of $SiC_f/SiC$ composites reinforced with continuous SiC fiber have been investigated in conjunction with the detailed analysis of their microstructures. Especially, the effect of test temperature on the characterization of $SiC_f/SiC$ composites was examined. In this composite system, a braiding Hi-Nicalon SiC fibric was selected as a reinforcement. $SiC_f/SiC$ composites have been fabricated by the reaction sintering process, using the complex matrix slurry with a constant composition ratio of SiC and C particles. The characterization of $RS-SiC_f/SiC$ composites was investigated by means of SEM, EDS and three point bending test. Based on the mechanical property-microstructure correlation, the high temperature applicability of $RS-SiC_f/SiC$ composites was discussed.

• 한국신재생에너지학회:학술대회논문집
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• 2010.06a
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• pp.100.1-100.1
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• 2010

고효율 실리콘 양자점 태양전지를 제작하기 위해 Si과 C target을 co-sputtering 방식으로 제조한 SiC matrix를 열처리하여 박막 내에 Si nanocrystal들을 생성하였다. Si nanocrystal의 특성은 다양한 요인에 영향을 받는 데 barrier 물질인 SiC matrix가 가장 큰 영향을 준다. SiC는 900도 이상에서 열처리하는 동안 Si과 C과 SiC으로 재배열 혹은 재결합하는 데 이 때 가장 작은 carbon이 빠르게 diffusion하는 현상에 의해 Si nanocrystal의 성장과 특성에 영향을 주게 된다. 이 현상을 연구하기 위해 stoichiometric SiC/Si-rich SiC/stoichiometric SiC의 3층 구조로 시료를 제작하여 이를 SIMS의 depth profiling을 통하여 열처리 전보다 열처리 후에 Si-rich SiC layer내에 carbon이 약 2~3%정도 증가한 것으로 carbon이 diffusion된 것을 확인하였다. 이 시료를 UV-VIS-NIR spectroscopy, Raman, GIXRD 등의 다양한 측정을 통하여 carbon diffusion에 의한 Si nanocrystal의 특성변화를 연구하였다.

• Journal of Information Display
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• v.6 no.1
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• pp.12-16
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• 2005

Gate and data drivers are essential for driving active matrix display. In this study, we integrate drivers with a-Si:H to develop a compact, better reliability and cost effective display. We design and fabricate drivers with conventional a-Si:H thin film transistors (TFTs). The output voltages are investigated according to the input voltage, temperature and operation time. Based on these studies, we propose here a new driver to prevent gate line from the floated state. For the external coupled voltage fluctuation, the proposed driver shows better stability.

• Proceedings of the KIEE Conference
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• 1988.07a
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• pp.324-327
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• 1988

The photovoltaic performances of a-si : H$n^{+}-p-p^{+}$ solar cells have been investigated. The optimum substrate temperature for the deposition of a-Si : H $n^{+}-p-p^{+}$ cell decreases with increasing doping concentration of the p-layer, and is less than 200$^{\circ}C$ when the gas phase doping concentration is higher than 10 ppm. The results can be explained as the dependences of substrate temperature for the relaxation of silicon atoms and for the bonded hydrogen concentration in the p-layer.

• Molecules and Cells
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• v.43 no.12
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• pp.975-988
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• 2020

Hypoxia plays important roles in cancer progression by inducing angiogenesis, metastasis, and drug resistance. However, the effects of hypoxia on long noncoding RNA (lncRNA) expression have not been clarified. Herein, we evaluated alterations in lncRNA expression in lung cancer cells under hypoxic conditions using lncRNA microarray analyses. Among 40,173 lncRNAs, 211 and 113 lncRNAs were up- and downregulated, respectively, in both A549 and NCI-H460 cells. Uroplakin 1A (UPK1A) and UPK1A-antisense RNA 1 (AS1), which showed the highest upregulation under hypoxic conditions, were selected to investigate the effects of UPK1A-AS1 on the expression of UPK1A and the mechanisms of hypoxia-inducible expression. Following transfection of cells with small interfering RNA (siRNA) targeting hypoxia-inducible factor 1α (HIF-1α), the hypoxia-induced expression of UPK1A and UPK1A-AS1 was significantly reduced, indicating that HIF-1α played important roles in the hypoxia-induced expression of these targets. After transfection of cells with UPK1A siRNA, UPK1A and UPK1A-AS1 levels were reduced. Moreover, transfection of cells with UPK1A-AS1 siRNA downregulated both UPK1A-AS1 and UPK1A. RNase protection assays demonstrated that UPK1A and UPK1A-AS1 formed a duplex; thus, transfection with UPK1A-AS1 siRNA decreased the RNA stability of UPK1A. Overall, these results indicated that UPK1A and UPK1A-AS1 expression increased under hypoxic conditions in a HIF-1α-dependent manner and that formation of a UPK1A/UPK1A-AS1 duplex affected RNA stability, enabling each molecule to regulate the expression of the other.

• 한국신재생에너지학회:학술대회논문집
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• 2006.06a
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• pp.228-231
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• 2006

This paper briefly introduces silicon based thin film solar cells: amorphous (a-Si:H), microcrystalline ${\mu}c-Si:H$ single junction and $a-Si:H/{\mu}c-Si:H$ tandem solar cells. The major difference of a-Si:H and ${\mu}c-Si:H$ cells comes from electro-optical properties of intrinsic Si-films (active layer) that absorb incident photon and generate electron-hole pairs. The a-Si:H film has energy band-gap (Eg) of 1.7-1.8eV and solar cells incorporating this wide Eg a-Si:H material as active layer commonly give high voltage and low current, when illuminated, compared to ${\mu}c-Si:H$ solar cells that employ low Eg (1.1eV) material. This Eg difference of two materials make possible tandem configuration in order to effectively use incident photon energy. The $a-Si:H/{\mu}c-Si:H$ tandem solar cells, therefore, have a great potential for low cost photovoltaic device by its various advantages such as low material cost by thin-film structure on low cost substrate instead of expensive c-Si wafer and high conversion efficiency by tandem structure. In this paper, the structure, process and operation properties of Si-based thin-film solar cells are discussed.

• The Korean Journal of Physiology and Pharmacology
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• v.12 no.4
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• pp.143-148
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• 2008

Caveolin-1 (CAV1) is an integral membrane protein that may function as a scaffold for plasma membrane proteins and acts as a tumor suppressor protein. One causative factor of chemotherapy-resistant cancers is P-plycoprotein (P-gp), the product of the multidrug resistance-1 gene (MDR1), which is localized in the caveolar structure. Currently, the interactive roles of CAV1 and MDR1 expression in the death of cancer cells remain controversial. In this study, we investigated the effects of indomethacin on the cell viability and the expression levels of MDR1 mRNA and protein in a CAV1-siRNA-mediated gene knockdown hepatoma cell line (SK-Hep1). Cell viability was significantly decreased in CAV1-siRNA-transfected cells compared with that of control-siRNA-transfected cells. Furthermore, the viability of cells pretreated with CAV1 siRNA was markedly decreased by treatment with indomethacin (400${\mu}$M for 24 h). However, the protein and mRNA levels of MDR1 were unchanged in CAV1-siRNA-transfected cells. These results suggest that CAV1 plays an important role as a major survival enzyme in cancer cells, and indomethacin can sensitively induce cell death under conditions of reduced CAV1 expression, independent of MDR1 expression.