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Experimental Study of the Phase Equilibria for $CO_2$ in Liquified Natural Gas Components at 77-219K

  • Yun, Sang-Kook
    • International Journal of Air-Conditioning and Refrigeration
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    • v.11 no.2
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    • pp.61-66
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    • 2003
  • In order to prevent roll-over and a rapid boil-off of LNG in tanks, the phase equilibria of carbon dioxide in liquefied natural gas components as binary mixtures at cryogenic temperatures have been experimentally measured using Fourier transform infrared spectroscopy in conjunction with a specially designed variable pressure/temperature cryostat cell (pathlength 2 mm; pressures up to 30 bar). Solid carbon dioxide has been found to be comparatively soluble in liquid nitrogen (3.25$\times$${10}^{-6}$ mole fraction), liquid methane (1.04$\times$${10}^{-4}$ mole fraction), liquid ethane (3.1$\times$${10}^{-2}$ mole fraction) and liquid propane (6.11$\times$${10}^{-2}$ mole fraction) at their normal boiling temperatures. The solubilities of carbon dioxide in various cryogens, which increased with increasing temperature, are much lower than those obtained by others using gas chromatography. The differences are attributed to infrared spectroscopy selectively measuring dissolved solute in situ whereas gas chromatography measures microscopic particulate solid in addition to dissolved solute.

A Study on Utilization Plans of Regional trunk rail route -Focused on the Daegu.janghang Line- (지방간선노선의 철도이용과 활성화 방안 -대구.장항선을 중심으로-)

  • Yang, Jun-Gyu
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.496-504
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    • 2011
  • The region trunk line railroad route undergoes an influence on a large scale in train operation systematic reorganization. This keynote of the train operation not being to the consumer and not to be is because being to the supplier. The trunk line route user of region supply change of the supplier sensitively, accepts but, the demand unit will be able to change the supply massive demanders does not become and like that to accept this back is not the railroad the mean of transportation which grudge is different a mean of transportation mainly makes use. This hits to neither the gist of GLORY promotions of the railroad public corporation which pursues the railroad use which is ordinary even in the basis of governmental policy of stock of coal small green growth and not to be is arranged. For the railroad use activation of the region trunk line route consequently and to excavate the demand hindrance element and a demand lure element the inside and the outside defines and to observe the fluctuation of use importing in existing train operation systematic fluctuation, with the user tries analyzes the instance of the overseas railroad enterprise about the process which reflects the opinion of the area and improvement under preparing boil.

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A study on The Role of Communication at Disaster Managing in Modern Societies (재난 발생시 국가 통합통신망 구축에 관한 연구)

  • Shin, Hyun-Shik
    • The Journal of the Korea institute of electronic communication sciences
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    • v.3 no.1
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    • pp.31-38
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    • 2008
  • Tanker oil outflow accident and nitric acid 2000 ton of our country T'aean offing fire etc. vessel sinking and the national treasure 1 good-natured person swunglyey bites to tell the truth the many misfortune occurred in recent times and the numerous casualty occurred. Consequently the righteousness where the preparation and misfortune will occur became the VIP where the preparation and misfortune will occur became the VIP where the information transmission which is quick is important about disaster. Consequently establishes the information transmission system which is quick in the area where the effect of misfortune is worried from observation perceives a disaster construction system development the merger of state radio network with under contributing which minimizes the loss of property and life of the citizen who is caused by with disaster damage boil.

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An Analysis of the Archetypical Symbols of Children's Performance with Water During Sandplay Therapy (아동의 모래놀이치료에서 물(水)을 통한 연행의 상징 분석)

  • Goh, Eun-Kyoung;Chung, Kai-Sook
    • Korean Journal of Child Studies
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    • v.32 no.3
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    • pp.185-202
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    • 2011
  • The purpose of this study was to understand the archetypical symbols present when conducting sandplay therapy with water from a hermeneutic point of view. The research participants were 6 children aged 8~9 who experienced problems in parent-children relationships. The result were as follows : The nature of archetypical symbols of present when working with water can be structured along two themes, vertical movements and horizontal movements. In vertical movements with three sub-themes, the meaning of 'to put in and boil out' is interpreted as 'mother's feeding baby', the meaning of 'to sink and bring out of water' is interpreted as 'resource acquisition', 'to swamp and float on the water' represents 'death and rebirth'. In horizontal movements consisted of two sub- themes, the meaning of 'to be swept away' is interpreted as 'initiation and conversion', the meaning of 'to wave and fix' is interpreted as 'to overcome the difficulties and create stability'.

The effect of retention grooves in Acrylic resin tooth denture base bond (합성수지 인공치와 열중합의치상 Resin의 결합시 인공치에 형성하는 유지공의 효과에 관한 연구)

  • Kim, Bu-Sob
    • Journal of Technologic Dentistry
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    • v.9 no.1
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    • pp.51-55
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    • 1987
  • One of the primary advantages of acrylic resin teeth is their ability to bond chemically to the denture base resins. Fracture od acrylic resin teeth from a maxillary denture, however, is not uncommon. Bonding failures have been attributed to faulty boil-out procedures that fail to eliminate all traces of wax from the ridge lap surfaces of the teeth and to contamination of the ridge lap surface by careless application of tinfoil substitute. Attempts to increase the strength of the bond between acrylic resin teeth and heat-cured denture base resin include grinding the glossy ridge lap surface (in fluid system), painting the ridgelap surface of the teeth with monomer-polymer solution, and cutting retention grooves in the ridge lap surface of the teeth. This latter method has been tested by applying a tensile force in a labial direction to the incisal part of the lingual surface of the acrylic resin teeth. A progressive shear compressive load was applied at an angle to the lingual surface of acrylic resin teeth bonded to denture base acrylic resin. No statistically singificant advantage was derived by preparing retention grooves of different shapes in the ridgelap surface of the denture teeth.

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A semispherical SQUID magnetometer system using high sensitivity double relaxation oscillation SQUIDs for magnetoencephalographic measurements

  • Lee, Yong-Ho;Hyukchan Kwon;Kim, Jin-Mok;Kim, Kwoong;Park, Yong-Ki
    • Progress in Superconductivity and Cryogenics
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    • v.5 no.1
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    • pp.21-26
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    • 2003
  • We designed and constructed a multichannel superconducting quantum interference device (SQUID) magnetometer system to measure magnetic fields from the human brain. We used a new type of SQUID, the double relaxation oscillation SQUID (DROS). With high flux-to-voltage transfers of the DROS, about 10 times larger than the dc SQUIDs, simple flux-locked loop circuits could be used for SQUID operation. Also the large modulation voltage of the DROS, typically being 100 $mutextrm{V}$, enabled stable flux-locked loop operation against the thermal offset voltage drift of the preamplifier. The magnetometers were fabricated using the Nb/AlOx/Nb junction technology. The SQUID system consists of 37 signal magnetometers, distributed on a semispherical surface, and 11 reference channels were installed to pickup background noises. External feedback was used to eliminate the magnetic coupling with the adjacent channels. The liquid helium dewar has a capacity of 29 L and boil-off rate of about 4 L/d with the total 48 channel insert. The magnetometer system has an average noise level of 3 fT/√Hz at 100 Hz, inside a shielded loon, and was applied to measure auditory-evoked fields.

The Study for Understanding the Disabled Body Figure and Individual Body Development of Universal Design (유니버설디자인을 위한 장애자의 체형 파악과 개인누드바디 연구)

  • Kim, Gum-Hwa;Song, Myoung-Kyun
    • The Korean Journal of Community Living Science
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    • v.19 no.3
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    • pp.445-457
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    • 2008
  • Recently as the population of the disabled increased, interest and understanding toward them have deepened and the importance of universal design has risen. The purpose of this study is to understand the 3-dimensional body figure of the disabled by collecting a plaster figure using plaster dressing method and developing an individual nude body using FRP, with one female wheelchair user as the subject. The results of this study are as follows: First, 3-dimensional shape grasp about the figure of the obstacle person as is. Second, developing of individual nude body. Third, the presentation of the practical use idea of individual nude body. Last is the security of the basic document about the universal design. Uses the individual nude body in future and under producing boil a basic pattern and disabled person clothing. This work was supported by the Korea Research Foundation Grant funded by the Korea Government (MOEHRD, Basic Research Promotion Fund) (KRF-2005-B00022)."

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A Literary Study on Bezoar Bovis (우황에 대한 문헌적 고찰)

  • Park, Seong-Kyu;Park, Jae-Seuk;Baik, Seong-Il;Kwon, Ki-Rok
    • Journal of Pharmacopuncture
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    • v.8 no.3
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    • pp.51-55
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    • 2005
  • Objectives: Literary investigation of existing data was conducted to verify effects of Bezoar Bovis and its herbal acupuncture, and determine quality management through component analysis. Results: Following results were obtained through literary investigation. 1. Bezoar Bovis is dried cystic stone from a cattle. Its characteristics are cool, no toxicity, and bitter taste. Known actions are: quells heat and detoxifies Fire Poison, extinguishes internal movement of Liver Wind and stops convulsion, vaporizes phlegm, and opens orifice. It is mainly used for treating tremor, stroke, delirium, sore throat, oral furuncle, boil, and others. 2. Bezoar Bovis is effective for eliminating liver toxicity, protecting against brain damage, and has anti-microbial activities. 3. Bezoar Bovis is mixed with bear gall bladder and deer musk to be used as herbal acupuncture, and this mixture is effective is invigorating liver functions as well as treating arthritis, headache, and etc. 4. Principal components of Bezoar Bovis are bilirubin-type pigments and cholic acids. The amount of bilirubin can be used as a standard to determine the quality of Bezoar Bovis.

Study of Boil Characteristics on Productivity of Flue- cured Tobacco (Nicotiana tabacum L.) III. Influence of Morphological Characteristics of Soils on Productivity of Flue-cured Tobacco (황색종 담배의 생산성에 관여하는 토양특성 제3보. 토양의 형태적 특성이 황색종 담배의 생산성에 미치는 영향)

  • 김용연
    • Journal of the Korean Society of Tobacco Science
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    • v.9 no.2
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    • pp.49-57
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    • 1987
  • This study had been conducted to determine morphological characteristics of soil in the major districts cultivating flue-cured tobacco plant. Also native soil productivities were measured by means of bioassay planting tobacco plant without fertilizer at 87 selected soils through field experiment. Morphological characteristics of troll affecting the dry weight of tobacco leaves cultivated in the field were investigated Among soil morphological characteristics, topograpy, slope, topsoil depth, soil depth, and soil texture had influenced with high significant on the dry weight of tobacco leaves. For prediction of dry weight (productivity) of tobacco leaves without fertilizer , multiple regression analysis were introduced using soul morphological characteristics. A combination of topography, slope, topsoil depth, and soil texture was very reliable for prediction of productivity. The regression equation was y = -16.88 -14, 34$X_1$ +20.43$X_2$ +50.21$X_3$ -7.54$X_4$ +13.45$X_5$ R = $0.670^{**}$ Where $X_1$ : Topography $X_2$ : Slope $X_3$ : Topsoil Depth $X_4$ : Soil Depth $X_5$ : Soil Texture

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A Study on visual digitalization in Oriental black ink blur effect Using Processing (Processing 을 사용한 먹 번짐 현상 시각적 디지털화에 대한 연구)

  • Ryu, Mi-Ohk;Park, Kyoung-Ju
    • 한국HCI학회:학술대회논문집
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    • 2009.02a
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    • pp.1176-1179
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    • 2009
  • Currently the time when we are living the large majority is harmonizing with digital medium together. From the calligraphy which is traditional in the example is reconstituted with digital and with the element which is one design is being born again. This about one being time is not a fun in rediscovery and as the design where the traditional form which seems hardly is modern is mixed in digital medium and is going. In this paper when digitalizing the expressive technique of calligraphy from the work which is analog time knows the important element of the actual conditions which appear and the report person does. The ink which appears from joke from actual work or calligraphy technique analyzes the actual condition spreading and this digitalization at the time of height boil time.

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