• Title/Summary/Keyword: $Bi_O_3$

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Extending Bibliographic Information Using Linked Data (링크드 데이터 방식을 통한 서지 정보의 확장에 관한 연구)

  • Park, Zi-Young
    • Journal of the Korean Society for information Management
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    • v.29 no.1
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    • pp.231-251
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    • 2012
  • In this study, Linked Data was used for extending bibliographic data, because Linked Data provides shareable identifiers, data structures, and link information. Linked Data is especially efficient in expanding bibliographic data integrated with bibliographic ontology. Therefore, Linked Data and bibliographic ontologies were analyzed and available Linked Data was suggested. By linking between meta-data schemes, bibliographic data, and authority data, issues for the effective Linked Data sharing were suggested: 1) selecting proper Linked Data for each bibliographic organization, 2) linking between different Linked Data, and 3) developing their own Linked Data for each bibliographic organization.

A Striping Policy for Extension of a Parallel VOD Server (병렬 VOD 서버의 확장을 위한 스트라이핑 기법)

  • Choi, Sook-Young;Yoo, Kwan-Joung
    • Journal of KIISE:Information Networking
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    • v.28 no.3
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    • pp.426-434
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    • 2001
  • Striping is a scheme that partitions data into blocks and distributes the blocks on different servers in a well defined order and thus could improve system capacity through load balance. In this paper, we propose a parallel VOD server and striping policies for load balancing when extra storage nodes are attached to a parallel VOD server for insufficient disk space in that VOD server. When new video data is stored on the attached storage node, the node may be overloaded. Since it decreases the system bandwidth, appropriate striping policies are required. We therefore present three striping policies that move some block of data o existing nodes into the new node and distribute the new data across all the storage nodes including the new node. Our experiment result shows that FSM bi-direction is the most effective technique.

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Ferroelectric and leakage current characteristics of Pt/SBT/Pt capacitors with post annealing process (후속 열처리에 따른 Pt/SBT/Pt 캐패시터의 강유전 특성과 누설전류 특성)

  • 권용욱;박주동;연대중;오태성
    • Journal of the Korean Vacuum Society
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    • v.8 no.3A
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    • pp.238-244
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    • 1999
  • Pt/SBT/Pt capacitors were fabricated using the MOD-derived $SrBi_{2x}Ta_2O_9$ (SBT) films and their ferroelectic and leakage current characteristics were investigated with post annealing at 400~$800^{\circ}C$. Although the MOD-derived SBT film exhibited the hysteresis loop typical for the leaky film, the well-saturated ferroelectric hysteresis loop could be obtained by post annealing the Pt/SBT/Pt capacitors at $550^{\circ}C$~$800^{\circ}C$. The remanent polarization $2P_r$ of the SBT film exhibited a maximum value of 9.72$\mu\textrm{cm}^2$ with post annealing at $600^{\circ}C$, and then decreased with increasing the post annealing temperature above $600^{\circ}C$. The MOD-derived SBT films exhibited the high leakage current density of ~$10^{-3} \textrm{A/cm}^2$ at 75kV/cm. With post annealing the Pt/SBT/Pt capacitor at 600~$800^{\circ}C$, however, the leakage current density decreased remarkably to less than $10^{-6}\textrm{A/cm}^2$ at 75kV/cm.

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A Study of Cooking Method of 7 Kinds of Wild Grasses for the Utility as an Edible Vegetables (7종 야생초의 식용화를 위한 조리방법에 관한 연구-관능검사를 중심으로-)

  • Lee, Hei-Jeung;Lee, Kyung-Hee;Koo, Sung-Ja
    • Korean journal of food and cookery science
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    • v.10 no.3
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    • pp.260-266
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    • 1994
  • The object of this study was investigation of the appreciable cooking condition in seven wild grasses, an evening primerose(Oenothera lamarckiana Seringe, S$_1$), a spiderwort(Commelina Communis L. S$_2$), the flower of a convolvulus(Calystegia Ja-ponica form Vulgaris gaea, S$_3$), So Ru Jaeng Yi(Portulaca Oleracea, S$_4$), Shoe Bi Rum(Portulacae Oleracea L, S$_5$), O Yi Pul(Sanguisorb aOfficinalis, S$_6$), Jip Sin Na Mul(Agrimonia poisa var. Japonica Nakai, S$_7$), in order to find out the importance as an useful vegetables. In this work 7 wild grasses with different soaking solutions and boiling conditions were examined to investigation the preference factors by sensory evaluation. Results of sensory evaluation for samples showed a significant difference at 1% and 5% level There were high significant differents in samples boiled for different time about astringent taste, bitter taste, perfume, green color and grassy smell at 1% and 5% level. In cooking methods of 7 samples, Namul was liked best and Guk, Salad and Fritter were followed. The condiments which were used for seasoning Namul were Gochujang. Soy Paste, Salt. Gochujang was most preferred.

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Analysis of Impact Forces Acting on a Flat Faced Body Entering Water (평면 두부형상을 갖는 물체의 입수시 충격력 해석)

  • Chang-Gu Kang
    • Journal of the Society of Naval Architects of Korea
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    • v.31 no.2
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    • pp.78-85
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    • 1994
  • Impact forces are acting on the fore part of a body entering water and those are function o the shape of the fore part and entrance angle. In this paper, impact forces are computed for the flat faced body with arbitrary entrance angle The geometric characteristics of the wetted surface of the body are complicated. The surface is divided into several smooth parts and each of them is represented by a bi-cubic B-spline. The free surface condition, $\phi=0$, is applied at the undisturbed free surface and he boundary value problem is analized by using Green's function.

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Self Assembly and Formation of Bi-continuous Cubic Liquid Crystalline Phase (바이컨티니어스 큐빅상 액정의 생성과 자기조직화)

  • Kim, In-Young;Choi, Hwa-Sook;Lee, So-Ra;Choi, Seong-Ho
    • Journal of the Korean Applied Science and Technology
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    • v.31 no.3
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    • pp.478-485
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    • 2014
  • This study is to form the self assembly of cubic crystalline phase to penetrate into the skin epidermis. The various performance synthesized diglyceryl phytylacetate (DGPA) having hydroxyl group (-OH) and 4 methyl chains with phytyl group was carried out as an amphoteric lipid such as emulsifying power, self assembly. Emulsifying activity of DGPA was very stabilized on only 1% of small content, it could make a W/O emulsion containing high internal phase incorporated with water. Cubic liquid crystal structure with DGPA on three-phase diagram was formed, when mixed DGPA, dimethicone (2CS), and water. Through three-phase diagram forming the cubic liquid crystal area, hexagonal structure zone, and mixing water phase and hexagonal structure area, reversed micelle area were respectively certified. Its structure was proved by the SAXS (small angled x-ray scattering) analysis. As an application, formation of cubosome containing 10% of magnesium ascorbylphosphate and 5% of pyridoxine tris-hexyldecanoate was encapsulated. Occlusive effect of cubosome had above 1.7 times better than reversed micelle. From using poloxamer of dispersing agent, phase structure recovered from W/O emulsion to cubic liquid crystal phase when storage in $33^{\circ}C$ incubator. Therefore, our this study is expected to be as epidermal-dermal skin absorbers in skin care cosmetics and pharmaceuticals industries as raw materials to form a cubic crystal phase through a more in-depth research to DGPA having amphoteric lipid property.

The bibliographical study on Pyu-Juk (肺積), Pyu-Ong(肺癰), Pyu-Ju(肺疽), Pyu-Am(肺癌) (폐적(肺積) 폐옹(肺癰) 폐저(肺疽) 폐암(肺癌)에 관(關)한 문헌적(文獻的) 고찰(考察))

  • Han, Jae-Soo;Oh, Tae-Hwan;Jung, Sung-Gi;Rhee, Hyung-Koo
    • The Journal of Internal Korean Medicine
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    • v.12 no.2
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    • pp.113-128
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    • 1991
  • This study has been carried out to investigate Pyu-Juk ( 肺積 ), Pyu-Ong ( 肺癰 ), Pyu-Ju ( 肺疽 ), Pyu-Am ( 肺癌 ) by referring to 56 literatures. The results were obtained as follows; 1. The treatllent-method of Pyu-Juk ( 肺積 ) are Ik Ki ( 益氣 ), SuI Yem Wha ( 洩陰火 ), So Juk ( 消積 ), Wha Juk ( 化積 ), Son Juk ( 損積 ), Ma Juk ( 摩積 ) Jo Chil Gi ( 調七氣 ), and herbs are Sik Bun Tang ( 息賁湯 ), Sik Bun Hwan ( 息賁丸 ), O Juk Hwan ( 五積丸 ), Ban ha Tang ( 半夏湯 ), Gil Gyung Tang ( 桔梗湯 ), Dae Chil Gi Tang ( 大七氣湯 ), Chil Gi Hwan ( 七氣湯 ) , Ga Gam Sik BlDl Hwan ( 加減息賁丸 ), Bil Rang San ( 檳郞散 ). 2. The treatment-method of Pyu-Ong ( 肺癰 ) Yang pyu ( 養肺 ), Yang Hyul ( 養血 ), Yang Gi ( 陽氣 ), Chung Geam Youn Pye ( 淸金潤肺 ), Hal Dam Bae Nong ( 豁痰排膿 ), Saeng Gi ( 生肌 ), herbs are Gil Gyung Tang ( 桔梗湯 ), Jung Ryuk Dae Jo Sa Pyu Tang ( ??大棗瀉肺湯 ), Chung Geom Wy Gyung Tang ( 千金 葦莖湯 ) Hwang Gi tang ( 黃嗜湯 ), Hyun Sam Chung Pyu Eum ( 玄蔘淸肺飮 ), Sip Mi Hwan ( 十味丸 ), Gil Gyung Baek San ( 桔梗白散 ), So Hong Eum ( 消膿飮 ), Sam Gi Bo Pyu Tang ( 蔘嗜補肺湯 ), sam Chul Gun Bi Tang ( 蔘朮健脾湯 ), Chung Pyu Gil Gyung Tang ( 淸肺桔梗湯 ), Yu Sung Hwan ( 如聖丸 ). 3. The treatment-method of Pyu-Ju ( 肺疽 ) are Be Bi ( 補脾 ), Bo Pyu ( 補肺 ), herbs are Hwang Gi Gum Jung Tang( 黃嗜補裨湯 ), lnSamBoPyuSan (人蔘補肺散) 4. The treatment-method of Pyu-Am ( 肺癌 ) are Bal Han ( 發汗 ), Chung Yul Hae Dok ( 淸熱解毒 ), Gang Hwa Do Dam ( 降火導痰 ), Hwa Rak Hwa a ( 和絡化瘀 ) Ik Pyu ( 益肺 ), Gun Bi ( 健脾 ), Ja Eum Yun Pyu ( 滋陰潤肺 ), Gi Hu Yang Bo ( 氣虛兩補 ), herbs are Gyul Yua Hae Dok Tang ( 莖熱解毒湯 ), Gang Hwa Jae ( 降火劑 ), Chil Yul Do Dam Tang ( 治熱導痰湯 ), Chong Ho Byul Gap Tang ( 靑蒿鱉甲湯 ), Ga gam Gil Gyung Tang ( 加減桔梗湯 ), Sang Mak San ( 生脈散), Yuk Mi Ji Hwang Tang ( 六味地黃湯 ), Baek Hap Go Geum Tang ( 百合固金湯 ), Dae Be Won Jun ( 大補元煎 ), Ga Mi Jae Che Bo Pyu Tang ( 加味載體補肺湯 ).

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The Factors Influencing Latent Fingermark Development on Adhesive Side of Iron Oxide Powder-based Small Particle Reagent (사삼산화철 기반의 소립자시약(Small Particle Reagent)의 접착면 잠재지문 현출 효과에 영향을 미치는 요인)

  • Kim, Sun-Min;Go, Gang-Seok;Lee, Seul-Bi;Yu, Je-Seol
    • The Journal of the Korea Contents Association
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    • v.16 no.8
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    • pp.209-216
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    • 2016
  • Latent fingerprint left on the adhesive sides of tapes can be easily found at a crime scene. Small Particle Reagents(SPR) based on iron oxide($Fe_3O_4$) is a technique for the detection of a latent fingerprint adhesive surface. In this study, found out that the causes affecting the quality of the fingerprints developed when used SPR based on iron oxide. To a suspension of 0.5g of iron oxide in 100ml of distilled water, 0.5ml or more surfactant were added can be developed latent fingerprints of good quality. In addition, using surfactants HLB(hydrophile-lipophile balance) value of 11~18 showed good contrast to the background and latent fingerprint.

Comparison of Characteristics of Gamma-Ray Imager Based on Coded Aperture by Varying the Thickness of the BGO Scintillator

  • Seoryeong Park;Mark D. Hammig;Manhee Jeong
    • Journal of Radiation Protection and Research
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    • v.47 no.4
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    • pp.214-225
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    • 2022
  • Background: The conventional cerium-doped Gd2Al2Ga3O12 (GAGG(Ce)) scintillator-based gamma-ray imager has a bulky detector, which can lead to incorrect positioning of the gammaray source if the shielding against background radiation is not appropriately designed. In addition, portability is important in complex environments such as inside nuclear power plants, yet existing gamma-ray imager based on a tungsten mask tends to be weighty and therefore difficult to handle. Motivated by the need to develop a system that is not sensitive to background radiation and is portable, we changed the material of the scintillator and the coded aperture. Materials and Methods: The existing GAGG(Ce) was replaced with Bi4Ge3O12 (BGO), a scintillator with high gamma-ray detection efficiency but low energy resolution, and replaced the tungsten (W) used in the existing coded aperture with lead (Pb). Each BGO scintillator is pixelated with 144 elements (12 × 12), and each pixel has an area of 4 mm × 4 mm and the scintillator thickness ranges from 5 to 20 mm (5, 10, and 20 mm). A coded aperture consisting of Pb with a thickness of 20 mm was applied to the BGO scintillators of all thicknesses. Results and Discussion: Spectroscopic characterization, imaging performance, and image quality evaluation revealed the 10 mm-thick BGO scintillators enabled the portable gamma-ray imager to deliver optimal performance. Although its performance is slightly inferior to that of existing GAGG(Ce)-based gamma-ray imager, the results confirmed that the manufacturing cost and the system's overall weight can be reduced. Conclusion: Despite the spectral characteristics, imaging system performance, and image quality is slightly lower than that of GAGG(Ce), the results show that BGO scintillators are preferable for gamma-ray imaging systems in terms of cost and ease of deployment, and the proposed design is well worth applying to systems intended for use in areas that do not require high precision.

Characteristics of TiN Barrier Metal Prepared by High Density Plasma CVD Method (고밀도 플라즈마 CVD 방법에 의한 TiN barrier metal 형성과 특성)

  • Choe, Chi-Gyu;Gang, Min-Seong;O, Gyeong-Suk;Lee, Yu-Seong;O, Dae-Hyeon;Hwang, Chan-Yong;Son, Jong-Won;Lee, Jeong-Yong;Kim, Geon-Ho
    • Korean Journal of Materials Research
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    • v.9 no.11
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    • pp.1129-1136
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    • 1999
  • TIN films were prepared on Si(100) substrate by ICP-CVD(inductive1y coupled plasma enhanced chemical vapor deposition) using TEMAT(tetrakis ethylmethamido titanium : Ti$[\textrm{N}\textrm{(CH)}_{3}\textrm{C}_{2}\textrm{H}_{5}]_{4}$) precursor at various deposition conditions. Phase, microstructure, and the electrical properties of TIN films were characterized by x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HRTEM) and electrical measurements. Polycrystalline TiN films with B1 structure were grown at temperatures over $200^{\circ}C$. Preferentially oriented along TiN(111) films were obtained at temperatures over $300^{\circ}C$ with the flow rates of 10, 5, and 5 sccm for TEMAT, $\textrm{N}_{2}$ and Ar gas. The TiN/Si(100) interface was flat and no chemical reaction between TIN and $\textrm{SiO}_2$ was found. The resistivity, carrier concentration and the carrier mobility for the TiN sample prepared at $500^{\circ}C$ are 21 $\mu\Omega$cm, 9.5$\times\textrm{10}^{18}\textrm{cm}^{-3}$ and $462.6\textrm{cm}^{2}$/Vs, respectively.

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