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Optimum Structural Design of D/H Tankers by using Pareto Optimal based Multi-objective function Method (Pareto 최적점 기반 다목적함수 기법에 의한 이중선각유조선의 최적 구조설계)

  • Na, Seung-Soo;Yum, Jae-Seon;Han, Sang-Min
    • Journal of the Society of Naval Architects of Korea
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    • v.42 no.3
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    • pp.284-289
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    • 2005
  • A structural design system is developed for the optimum design of double hull tankers based on the multi-objective function method. As a multi-objective function method, Pareto optimal based random search method is adopted to find the minimum structural weight and fabrication cost. The fabrication cost model is developed by considering the welding technique, welding poses and assembly stages to manage the fabrication man-hour and process. In this study, a new structural design is investigated due to the rapidly increased material cost. Several optimum structural designs on the basis of high material cost are carried out based on the Pareto optimal set obtained by the random search method. The design results are compared with existing ship, which is designed under low material cost.

A basic study on the Design of Institutional Household for Infants (영아전담공공가정 설계를 위한 기초연구)

  • Doo Kyung Ja
    • Journal of the Korean Home Economics Association
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    • v.42 no.9
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    • pp.213-235
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    • 2004
  • This study investigated the Infant Institutional Household (IIH) for the care of infants. The purpose was to provide basic information needed to raise Korea's birth rate and to design higher level nursing facilities which can satisfy working mothers who are presently offered few facilities. To achieve this purpose. IIM was divided into 7 sub-functional stations : planning-management, marketing, materials-management, business-management, man power-management, financial-management and control etc. The results are as follows : 1. Kind of facilities : Infants'(full responsibility) Institutional Household. 2. Number of infants : total 19 babies. 3. Ratio of infants to teachers : one to one (Contained assistance teachers) 4. Installing region : convenient traffic place - in Seoul. 5. Building site and kind : the first floor space of 60pyung (198㎡) in the Apartment complex which . contained many apartments of small size. 6. Nursing time : 24-hour day care in weekdays Age of object : age from 1month to 24months old babies(after his/her birth). 7. Kind of services and Cost : mother-like care, cost includes nursing-fee, a deposit and admission-fee. 8. Economic Condition and managing direction : pursuit limited profits with nursing-fee, admission-fee, a loan and national (or self -government of direct) supplementary funds.

Development of an Energy MonItorIng System for Gas Scrubber (반도체 공정장비 Gas Scrubber의 에너지 모니터링 시스템개발)

  • Kim, Sun-Man;Im, Ik-Tea;Ahn, Kang-Ho
    • Journal of the Semiconductor & Display Technology
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    • v.10 no.2
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    • pp.13-17
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    • 2011
  • We have developed a new energy-consuming monitoring system that has made it possible to measure the energy consumption of a gas scrubber, one of semiconductor processing equipments, and installed this system to the gas scrubber under operating at a manufacture site. Using this system, we have measured consumptions of electric power and processing gas consumed at standby to operating mode. In case of the gas scrubber, processing gas flows continuously into it at standby and operating mode. Therefore, if the electric power has been supplied, the processing gas can flows into the device for 24 hours. Moreover, at operating of gas scrubber, the amount of electricity consumption is 5 kWh. At Standby of gas scrubber, it spends 3kwh. It is certain that the energy consumption is greater at operating mode than at standby mode. The carbon emission rates from 24 hour gas scrubber operation are 236 $kgCO_2$/day of $N_2$, 57 $kgCO_2$/day of electric power and 0.001 $kgCO_2$/day of cooling water. Most of carbon is emitted from $N_2$ gas and electric power consumption.

Anti-allergic and Anti-inflammatory Actions of Cimicifuga heracleifolia: Partial Purification of Active Components

  • Kim, Young-Ran;Park, Soo-Hyung;Kim, Kyeong-Man
    • Biomolecules & Therapeutics
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    • v.2 no.2
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    • pp.149-154
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    • 1994
  • Anti-allergic and anti-inflammatory actions of the water extract from Cimicifuga heracleifolia were evaluated in mice and rats. Several criteria were employed to assess the anti-allergic and anti-inflammatory actions of Cimicifuga heracleifolia, such as hyaluronidase activity, mediators-induced vascular permeability changes, 48 hour homologous passive cutaneous anaphylaxis (PCA) histamine release from mast cells, and the carrageenan-induced rat paw edema. To further characterize the active components, the water extract was either extracted with organic solvent or fractionated according to molecular weight, and each fraction was tested for some of anti-allergic parameters. Hyaluronidase activities, both in activating and in activated states, were significantly inhibited by the water extract of Cimicifuga heracleifolia and by some of its subfractions, molecular weight less than 1,000. The water extracts (50~400 mg/kg) significantly inhibited 48 hr homologous PCA and vascular permeability changes induced by chemical mediators (histamine, serotonin, and leukotriene $C_4$) in mice. In the case of histamine-induced vascular permeability changes, more extensive studies were conducted; water extract was either fractionated according to molecular weight or extracted with butanol. Anti-histamine actions were observed only from the water layer, and these active components were of the molecular weight less than 1,000. These anti-allergic actions were observed mainly from mice than from rats. On the other hand, anti-inflammatory actions of the water extract from Cimicifuga heracleifolia were significant in rats.

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Analysis of the effect in the city due to the bridges incidents in Songdo International City (송도국제도시 연결도로의 유고상황 발생에 따른 신도시 내부 영향 분석)

  • Hong, Ki-Man;Kim, Tea-gyun
    • Journal of Urban Science
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    • v.10 no.1
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    • pp.49-60
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    • 2021
  • The purpose of this study is to analysis the impact on the inside of the new city when an incidents occurs on the Songdo International City connecting road, which has a limited access. The analysis data used KTDB's O/D and network data of the Seoul metropolitan area. In addition, the scenario composition applied a method of reducing the number of lanes on the road according to the situation of incidents, targeting bridges advancing from Songdo International City to the outside in the morning peak hours. The analysis method analyzed the traffic volume, total travel time, total travel kilometer, and route change in the new city based on the results of the traffic allocation model. As a result of the analysis, the range of influence was shown to two types. First, of the seven bridges, Aam 3, Aam 2, and Aam 1 were analyzed to have an impact only in some areas of the northwestern part of the new city. On the other hand, the remaining bridges were analyzed to affect the new city as a whole. The analysis results of this study are expected to be used as basic data to establish the scope of internal road network management when similar cases occur in the future.

Trying to Place Beckett's View on Death in Western Thanatology (서구 죽음학에서 베케트 죽음관 자리매기기)

  • Hwang, Hoon-Sung
    • Journal of English Language & Literature
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    • v.58 no.4
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    • pp.611-632
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    • 2012
  • Beckett's life-long struggling with death may be illuminated in terms of the Western tradition of thanatology as well as Philippe Ariès's anthropological classification of death. Among the Western tradition, Beckett's oeuvre incarnates memento mori, timor mori, nihilism, theatrum mundi, life as afterlife, and the transsubstantiation of the self. Among the five views of death Ariès suggests, Beckett appears to foreground the death of the self and the invisible dirty death. In a world devoid of transcendental Signified, Beckett's resident is "a poor player/That struts and frets his hour upon the stage." Our contemporary vision of death is dominated by the dirty death and timor mori resurrected from the cultural icon of danse macabre in the late Mediaeval age as vividly dramatized in W;t by Margaret Edson. Beckett stands in no man's land: Lucky complains of divine aphathia as well as scopes at the possibility of God's existence like Hamm. Beckett's way of getting out of the dilemma is laughing a mirthless and dianoetic laugher. To bourgeois class who shudder at the sight of Grim Death after forgettable years of indulgence and addiction to capitalist consumption, Beckett seems to preach, your life is a death-in-life, you are not born yet until you are baptized with existential awakening as Gregor Samsa in Kafka's Verwandlung, or Tolstoy in Confession.

A Case Report of Prolonged Hemorrhage Following Traditional Phlebotomy (Fasd)

  • Sajjad Sadeghi
    • Journal of Pharmacopuncture
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    • v.27 no.1
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    • pp.47-52
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    • 2024
  • Phlebotomy, a therapeutic method of bloodletting typically performed using a needle, has a traditional technique known as "Fasd." In this method, blood is extracted by creating a longitudinal incision on a vein (3-5 mm) with a surgical scalpel blade, usually blade No. 11. Due to the incision in the vessel wall, establishing hemostasis is more challenging compared to conventional methods. Hemostasis is usually achieved within minutes after Fasd. We present a case highlighting an uncommon yet significant complication of traditional phlebotomy. A 55-year-old man with no prior medical conditions underwent traditional phlebotomy at an academic traditional medicine clinic. Senior MD-PhD students in Iranian Traditional Medicine, under professor supervision, performed Fasd. A sterile scalpel blade No. 11 was used to create a longitudinal incision of approximately 4 mm on the patient's median basilic vein in the right hand. After removing 400 cc of blood, a pressure dressing was applied to the incision site. Despite attempts such as hand elevation, ice pack application, prolonged direct pressure, and tight elastic bandaging, bleeding from the incision persisted. After an hour of supportive therapy, hemostasis was eventually achieved within a few minutes using burnt cotton dressing (a traditional method for blood hemostasis). Following intravenous hydration, the patient was discharged in stable condition and reported no issues during the one-month follow-up. The traditional phlebotomy (Fasd) carries the risk of serious complications, including uncontrolled and prolonged bleeding. Further research on the efficacy and safety of burnt cotton dressing for controlling hemostasis is recommended.

Effect of Packaging Methods on Enoki Mushroom Qualities (포장방법에 따른 팽이버섯의 선도유지 효과)

  • Shin, Se-Hee;Jung, Joo-Yeoun;Choi, Jeong-Hee;Kim, Dong-Man;Jeong, Moon-Cheol
    • Food Science and Preservation
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    • v.16 no.2
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    • pp.179-185
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    • 2009
  • To develop an Enoki mushroom packaging method, mushrooms were stored at $1^{\circ}C$ for 12 days after passive MAP packaging(PM), vacuum packaging(VM), and gas flushing packaging(AM), after investigation of film thickness influences on respiration rates and gas compositions(LDPE films 20, 40, and 60 m in thickness were tested). Enoki mushrooms had respiration rates of 26.4 mL $CO_2/kg/hour$ at $0^{\circ}C$, 80.0 mL $CO_2/kg/hour$ at $10^{\circ}C$, 130.9 mL $CO_2/kg/hour$ at $20^{\circ}C$, and 130.9 mL $CO_2/kg/hour$ at $30^{\circ}C$. A film thickness of 20 m was chosen for further tests to maintain the oxygen concentration above the minimum growth level; the thinnest film offered a higher gas transmittance rate than did the thicker films. No anaerobic respiration was evident over 12 days of storage using any packaging method, with the exception of VM. AM, using a high concentration of $CO_2$, restricted respiration rate. Mushrooms packaged using the VM method showed the greatest weight loss and extent of discoloration among the packaging methods tested, followed by AM mushrooms using 50% $CO_2/10%\;O_2/40%\;N_2$. Mushrooms packaged by the VM and PM methods developed a serious off-flavor after 2 days of storage, and a high stipe elongation rate after 5 days of storage, respectively. However, AM using 50% $CO_2/10%\;O_2/40%\;N_2$ of various gas ratios tested, allowed Enoki mushrooms to be maintained for up to 12 days without development of off-flavor, discoloration, or moldiness.

Effect on the Production of Toxin Protein of Bacillus thuringiesis by Culture Conditions (배양 조건이 Bacillus thuringiesis 독소단백질의 생산에 미치는 영향)

  • Kim, Tae Wan;Kim, Tae Hwan;Yu, Yong Man
    • The Korean Journal of Pesticide Science
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    • v.18 no.4
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    • pp.358-363
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    • 2014
  • We was investigated parasporal inclusion proteins change to use industrial medium of new strain Bacillus thuringiensis CAB 565, CAB 566. To confirm medium's oxygen efficient consist of glucose and yeast extract, we was conducted oxygen transfer coefficients (KLa) of medium's concentration and impeller in 20 l-Jar fermentor. When to increase air flow rate and medium concentration, KLa rate is rise. Also it is effective on agitation rate 200 rpm, but KLa rate is decrease when to rise agitation rate. To hold dissolved oxygen rate (upper 50%), Air flow rate is steadily increase on culture to use microsparger. When 16 hour of culture stage, B.t. CAB 565 and B.t. CAB 566 harvested respectively $2.3{\times}10^{10}$, $1.8{\times}10^{10}$ viable cell/ml. When 54 hour, B.t. CAB565, 566 harvested respectively $1.9{\times}10^{10}$, $1.4{\times}10^{10}spore/ml$. To resulting carbon's concentration, It is the most effective that glucose concentration is contained 5% in medium.

The Characteristics of Monoterpene and Air Quality in Ambient Air at Forested Road in Jeollanam-do (전남지역 숲길의 모노테르펜류 농도와 공기질 특성)

  • Oh, Gil-Young;Seo, Yun-Gyu;Park, Gui-Hwan;Kim, Ik-San;Bae, Ju-Soon;Park, Hye-Young;Yang, Soo-In;Jeon, Jun-Min;Jeong, Man-Ho;Seo, Yun-Seob;Lee, Wan-Jin
    • Journal of Korean Society of Forest Science
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    • v.101 no.2
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    • pp.195-202
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    • 2012
  • Three-season field study was conducted to investigate the distribution of monoterpene(10) and air anion in ambient air at five forests. ${\alpha}$-Pinene, camphene, sabinene, ${\beta}$-pinene, myrcene, terpinolene, limonene, 1,8-cineol, linalool, and camphor were quantified in the samples collected. The highest 4-hour mean concentration of total monoterpene were ${\beta}$-pinene+myrcene as 958 pptv at Juknokwon dominated by bamboo and ${\alpha}$-pinene (524 pptv), limonene (445 pptv) at Wood Land and Suncheon Bay, respectively. The seasonal means were observed to peak during spring with their maximum at Wood Land and Seonam Temple and during summer at Juknokwon and Suncheon Bay. The 24 hour concentration mean of atmosphere standards were found with much lower values than those by law. The highest concentrations of air anion were measured $400{\sim}3,000ea{\cdot}mL^{-1}$ through the sites. There is no significant correlation between the concentration of monoterpene and air anion.