• Title/Summary/Keyword: Cold climate

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Study for the characteristic symptoms of Dampness in Donguibogam(東醫寶鑑) (동의보감(東醫寶鑑)에 나타난 습사(濕邪)의 특징 증상에 대한 고찰(考察))

  • Jung, Hyun-Jong
    • The Journal of the Society of Korean Medicine Diagnostics
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    • v.17 no.2
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    • pp.90-111
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    • 2013
  • Objectives Migratory pathogenic factor(六淫) occupies an important position in the etiology of Korean Medicine. This paper shows how Dampness, one of Migratory pathogenic factor(六淫), is explained in Donguibogam(東醫寶鑑). And, based on this, we will figure out how to make a judgement of Dampness through diagnosis. Method 1. Collect parts of Dampness mentioned in Donguibogam(東醫寶鑑). 2. From the collection, extract contents about mechanism and symptom of Dampness, which is considered necessary for diagnosis. 3. Put all the extraction together, suggest the diagnosis element which can be criteria of judgement of Dampness through diagnosis. Result & Conclusions The occurrence of Dampness come from a wet climate and environment externally, and overeating of greasy food and digestive disorder internally. There are many different kinds of symptoms throughout the body cause of poor circulation. Dampness is classed as Cold-dampness, Damp-heat, and Dampness-phlegm depending on characteristic symptoms, and mainly shows musculoskeletal disease and digestive troubles. Typical symptoms are pitting edema, distention and fullness, moderate and thready pulse, volume of perspiration increase, loose feces, urine volume decrease, pain of joint and muscle, restriction of movement, etc.

Effect of Heat Input on Girth welds properties of High strain steel pipe (입열량이 고변형률 강관 원주 용접부 특성에 미치는 영향)

  • Lee, Jin-Woo;Song, Woo-Hyun;Seo, Dong-Han;Lee, Jong-Sub
    • Proceedings of the KWS Conference
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    • 2010.05a
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    • pp.71-71
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    • 2010
  • SBD (Strain-based design) of pipe lines have gained world-wide attention in recent years. The present research aims to evaluate the fracture characteristics of API (America Petroleum Institute) SBD X100 girth weldment that typically applied for cold climate and deep water offshore, with the focus on the influence of heat input changing with 6kJ/cm and 10kJ/cm from GMAW (Gas Metal Arc Welding). At a low heat input at 6kJ/cm, the weld metal had Multi-phase matrix (Acicular ferrite + Banite + Martensite) that could fill up both fracture toughness and strength as reported previously. Also, the weld metal exhibited 859MPa YS (Yield strength), 108J impact toughness at $-40^{\circ}C$ and 0.52mm CTOD (Crack Tip Open Displacement) at $-10^{\circ}C$. These results can be satisfied with the requirement of API SBD X100 girth weldment and Alaska pipe line project.

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A Study on the Cultural Characteristic and Folk Costume of AINU (아이누人의 문화적 특성과 복식에 관한 연구)

  • 강순제
    • Journal of the Korean Society of Costume
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    • v.51 no.8
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    • pp.141-157
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    • 2001
  • It has been since 15 century when Ainu realized themselves as a race. Their folk culture had been formed with the effect of East-northern Asia and cultural exchange with Japanese through the northern trade during 17 -18 centuries. It can be ascertained from the typical festival food and clothing. clothing style and the ornaments of Ainu people. The basics of Ainu people are composed of an unfolding clothes which men and women had wort in one-piece style even though they had lived in the northernmost cold climate. Atousi is their typical clothing which had been made of the grass fiber. Ainu people had imported the old cotton clothes from the trading with the mainland roughly in the late E-do (late 18 century). Ainu's clothing is divided broadly into Aiusi and Moreu pattern. Ainu people had decorated their back, shoulder, collar, burial clothes, waist and hem by changing and mixing them. These are the expression of their desire to prevent themselves from the wicked plot or the devil. There is no similar Ainu patterns or skill in Kimono, while it is known to be rather related to the area of Amur River, Sakhalin, and the distant Mongolia. Therefore, the traditional pattern of Ainu should be the continental conception which had been skilfully shaped through the trading with the north adding the series of Ainu People.

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COMPUTATIONAL PREDICTION OF ICING EFFECTS ON AERODYNAMIC CHARACTERISTICS OF A WIND TURBINE BLADE (풍력 블레이드의 결빙에 의한 공력 영향성 전산 예측)

  • Park, J.H.;Jung, K.Y.;Myong, R.S.
    • Journal of computational fluids engineering
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    • v.18 no.3
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    • pp.51-59
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    • 2013
  • A significant change in aerodynamic characteristics of wind turbine blade can occur by ice formed on the surface of the blade operated in cold climate. The ice accretion can result in performance loss, overloading due to delayed stall, and excessive vibration associated with mass imbalance. In this study, the impact of ice accretion on the aerodynamic characteristics of NREL 5MW wind turbine blade sections is examined by a CFD-based method. It is shown that the thickness of ice accretion increases from the root to the tip and the effects of icing conditions such as relative wind velocity play a significant role in the shape of ice accretion. In addition, the computational results are used to assess the degradation in the lift and drag coefficients of the blade sections.

Estimation of Non Working Day Corresponding to Statistical Data of Korea Meteorological Administration - Focused on Cheonju - (기상청 통계자료기반 기후요소에 의한 작업불능일 산정 - 청주지역을 중심으로 -)

  • Baek, Dae-Hyun;Joung, Woung-Sun;Park, In-Beom;Song, Seung-Heon;Baek, Byung-Hoon;Han, Min-Cheol
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2008.05a
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    • pp.141-145
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    • 2008
  • In this paper, non working day for the construction project in Cheongju region considering weather condition for 30 years from 1971 to 2000 and 10 years from 1991 to 2000 as statistical periods was estimated. In Cheongju region, there was no remarkable difference between them because non working day for outside and half outside work was 157days and for interior work 144days at statistics for 30 years., and utside and half outside work was 159days and for interior work 142days at statistics for 10 years.. However, non working day due to high temperature is slightly increased, and non working day due to cold weather is slightly decreased in the case that the recent statistical data was used caused by global warming. Non working day due to rainfall was 23 days at statistics for 30 years, and it was 28 days at statistics for 10 years.

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Studies on the production and marketing of apple of Kyungpook region and strategies of its improvement (경북지역의 사과생산 및 유통에 관한 연구)

  • 류진춘
    • Food Science and Preservation
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    • v.3 no.1
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    • pp.61-75
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    • 1996
  • Apple is most favorable fruit in Korea, and apple farmland has been increased before and after the agreements of Uruguay Round and apple is considered as one of strategic agricultural products. Especially expansion of apple farmland is concentrated in Kyungpook region because of the suitable climate and its market share is about 70 percents in 1992. The marketing channels of apples of Kyungpook region are widely classified by merchant, agricultural or horticultural co-op and large scale farmer's. Among them market share of merchant's occupy over 65 percent. In marketing margins, commercial profit is higher than cost in total marketing margins and, assembler and retailer's margin is not less than wholesaler's. The fluctuation of the price of apple is high in year. The marketing problems of apples are several, first, complex marketing channels, secondly, the high percentage of market share by growing district assembler, thirdly, low rate of package and quality standardization, finally, concentration of shipment of apple because of the shortage of apple processing, storage and marketing facilities, of newly produced apples. In conclusion, to increase apple grower's income with the stabilization of supply and quality upgrade, the improvement measures of marketing system are as follows, first, government level's support in marketing facilities and mechanism, secondly, the increment of supply by grower's cooperatives, thirdly, the establishment of a serious of marketing system to increase the efficiency, fourthly, the establishment of cold-chain system and quality standardization of apple, finally, production of various kinds of apple processing goods.

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Experimental Study on Thermoelectric Generator Performance for Waste Heat Recovery in Vehicles (자동차 배기폐열 회수용 열전발전 시스템의 성능에 관한 연구)

  • Lee, Dae-Woong
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.26 no.6
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    • pp.287-293
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    • 2014
  • Internal combustion engines release 30~40% of the energy from fossil fuels into the atmosphere in the form of exhaust gases. By utilizing this waste heat, plenty of energy can be conserved in the auto industry. Thermoelectric generation is one way of transforming the energy from engine's exhaust gases into electricity in a vehicle. The thermoelectric generators located on the exhaust pipe have been developed for vehicle applications. Different experiments with thermoelectric generators have been conducted under various test conditions as following examples: hot gas temperature, hot gas mass flow rate, coolant temperature, and coolant mass flow rate. The experimental results have shown that the generated electrical power increases significantly with the temperature difference between the hot and the cold side of the thermoelectric generator and the gas flow rate of the hot-side heat exchanger. In addition, the gas temperature of the hot-side heat exchanger decreases with the length of the thermoelectric generator, especially at a low gas flow rate.

Effect of Heat Input on Girth Welds Properties of High Strain Steel Pipe (입열량이 고변형률 강관 원주 용접부 특성에 미치는 영향)

  • Lee, Jin-Woo;Song, Woo-Hyun;Seo, Dong-Han;Lee, Jong-Sub
    • Journal of Welding and Joining
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    • v.27 no.6
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    • pp.25-30
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    • 2009
  • SBD (Strain-based design) of pipe lines have gained world-wide attention in recent years. The present research aims to evaluate the fracture characteristics of API (America Petroleum Institute) SBD X100 girth weldment that typically applied for cold climate and deep water offshore, with the focus on the influence of heat input changing with 6kJ/cm and 10kJ/cm from GMAW (Gas Metal Arc Welding). At a low heat input at 6kJ/cm, the weld metal had Multi-phase matrix (Acicular ferrite + Banite + Martensite) that could fill up both fracture toughness and strength as reported previously. Also, the weld metal exhibited 859MPa YS (Yield strength), 108J impact toughness at $-40^{\circ}C$ and 0.52mm CTOD (Crack Tip Open Displacement) at $-10^{\circ}C$. These results can be satisfied with the requirement of API SBD X100 girth weldment and Alaska pipe line project.

A Review of Winterization Trend for Vessels Operating in Ice-covered Waters (극지운항용 선박에 적용되는 방한기술 동향 분석)

  • Jeong, Seong-Yeob;Kang, Kuk-Jin;Jang, Jinho
    • Journal of the Society of Naval Architects of Korea
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    • v.56 no.2
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    • pp.135-142
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    • 2019
  • Ice accretions on the ship equipment and areas are the most common issues for vessels operating in cold climate and ice-covered waters and it has effect on the vessel safety and operability of equipment and systems, thus ship machineries and structures exposed to low temperature environments should satisfy the winterization requirements specified in ice class rules. The main objective of this study is to review the state-of-the-art of winterization trend for vessels navigating in ice-covered waters. The hazard of icing and how ice accretions affect operations and safety are investigated firstly, and then winterized notations for each classification are summarized. In addition, winterization methods currently used in vessels operating in ice-covered waters are investigated for a better understanding of effective approach and its application. This information will provide a framework for future winterization issues to mitigate the ice accretion phenomena.

A Study on the Conceptual Origin of Pathogenic Qi in the Mawangdui Yishu (마왕퇴의서 속 사기(邪氣)의 시원적(始原的) 개념 고찰)

  • Lee, Kyung
    • Journal of Korean Medical classics
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    • v.35 no.1
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    • pp.81-92
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    • 2022
  • Objectives : This paper aims to analyze the origins of the pathogenic qi[邪氣] concept through analysis of related character shapes and examples within the Mawangdui Yishu, where we can grasp the state of medicine pre-Huangdineijing. Methods : Etymology was determined through ancient character analysis, while examples of its usage and original texts were compared to extract their implications. For usage analysis, medical texts of later periods that contained similar verses or contents with the Mawangdui text were compared, through which similarities and changes in meaning of the word or verse were examined. Conclusions : While the term 'xieqi(邪氣, pathogenic qi)' had not yet been mentioned in the Mawangdui text, 'eqi(惡氣)' was used similarly. Wind[風], cold[寒], dampness[濕] were not only understood as terms referring to weather or climate but possible causes for disease. Meanwhile, there was lingering belief from the Shang(商) period that saw disease as God's punishment, which could be seen as transition phenomenon from superstition to rational thought. Through diseases 'wind disease[風病]' and 'bi(痹)', we could determine that medicine at the time was limited to the Yin-yang theory, having not yet integrated the Five phases perspective. Moreover, the possibility of other pathogenic qi elements, 'heat[暑]', 'dryness[燥]', and 'fire[火]' could be assumed to have been embedded in 'wenbing(溫病)'.